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-rw-r--r--Documentation/scsi/aacraid.txt24
-rw-r--r--block/bsg.c9
-rw-r--r--drivers/infiniband/ulp/iser/iscsi_iser.c356
-rw-r--r--drivers/infiniband/ulp/iser/iscsi_iser.h44
-rw-r--r--drivers/infiniband/ulp/iser/iser_initiator.c209
-rw-r--r--drivers/infiniband/ulp/iser/iser_memory.c77
-rw-r--r--drivers/infiniband/ulp/iser/iser_verbs.c28
-rw-r--r--drivers/md/Kconfig23
-rw-r--r--drivers/md/Makefile7
-rw-r--r--drivers/md/dm-emc.c345
-rw-r--r--drivers/md/dm-hw-handler.c213
-rw-r--r--drivers/md/dm-hw-handler.h63
-rw-r--r--drivers/md/dm-mpath-hp-sw.c247
-rw-r--r--drivers/md/dm-mpath-rdac.c700
-rw-r--r--drivers/md/dm-mpath.c163
-rw-r--r--drivers/md/dm-mpath.h1
-rw-r--r--drivers/message/fusion/lsi/mpi.h2
-rw-r--r--drivers/message/fusion/lsi/mpi_cnfg.h2
-rw-r--r--drivers/message/fusion/mptbase.c91
-rw-r--r--drivers/message/fusion/mptbase.h17
-rw-r--r--drivers/message/fusion/mptctl.c4
-rw-r--r--drivers/message/fusion/mptctl.h2
-rw-r--r--drivers/message/fusion/mptdebug.h2
-rw-r--r--drivers/message/fusion/mptfc.c2
-rw-r--r--drivers/message/fusion/mptlan.c2
-rw-r--r--drivers/message/fusion/mptlan.h2
-rw-r--r--drivers/message/fusion/mptsas.c2
-rw-r--r--drivers/message/fusion/mptsas.h2
-rw-r--r--drivers/message/fusion/mptscsih.c2
-rw-r--r--drivers/message/fusion/mptscsih.h2
-rw-r--r--drivers/message/fusion/mptspi.c3
-rw-r--r--drivers/s390/scsi/Makefile3
-rw-r--r--drivers/s390/scsi/zfcp_aux.c1689
-rw-r--r--drivers/s390/scsi/zfcp_ccw.c152
-rw-r--r--drivers/s390/scsi/zfcp_cfdc.c259
-rw-r--r--drivers/s390/scsi/zfcp_dbf.c90
-rw-r--r--drivers/s390/scsi/zfcp_dbf.h12
-rw-r--r--drivers/s390/scsi/zfcp_def.h341
-rw-r--r--drivers/s390/scsi/zfcp_erp.c3824
-rw-r--r--drivers/s390/scsi/zfcp_ext.h301
-rw-r--r--drivers/s390/scsi/zfcp_fc.c567
-rw-r--r--drivers/s390/scsi/zfcp_fsf.c5573
-rw-r--r--drivers/s390/scsi/zfcp_fsf.h70
-rw-r--r--drivers/s390/scsi/zfcp_qdio.c811
-rw-r--r--drivers/s390/scsi/zfcp_scsi.c784
-rw-r--r--drivers/s390/scsi/zfcp_sysfs.c496
-rw-r--r--drivers/s390/scsi/zfcp_sysfs_adapter.c270
-rw-r--r--drivers/s390/scsi/zfcp_sysfs_driver.c106
-rw-r--r--drivers/s390/scsi/zfcp_sysfs_port.c295
-rw-r--r--drivers/s390/scsi/zfcp_sysfs_unit.c167
-rw-r--r--drivers/scsi/Kconfig27
-rw-r--r--drivers/scsi/Makefile2
-rw-r--r--drivers/scsi/aacraid/commctrl.c33
-rw-r--r--drivers/scsi/aacraid/linit.c2
-rw-r--r--drivers/scsi/device_handler/Kconfig32
-rw-r--r--drivers/scsi/device_handler/Makefile7
-rw-r--r--drivers/scsi/device_handler/scsi_dh.c162
-rw-r--r--drivers/scsi/device_handler/scsi_dh_emc.c499
-rw-r--r--drivers/scsi/device_handler/scsi_dh_hp_sw.c202
-rw-r--r--drivers/scsi/device_handler/scsi_dh_rdac.c691
-rw-r--r--drivers/scsi/esp_scsi.c24
-rw-r--r--drivers/scsi/hosts.c2
-rw-r--r--drivers/scsi/ibmvscsi/Makefile1
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.c3910
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.h682
-rw-r--r--drivers/scsi/iscsi_tcp.c514
-rw-r--r--drivers/scsi/iscsi_tcp.h7
-rw-r--r--drivers/scsi/libiscsi.c1359
-rw-r--r--drivers/scsi/lpfc/lpfc.h21
-rw-r--r--drivers/scsi/lpfc/lpfc_attr.c3
-rw-r--r--drivers/scsi/lpfc/lpfc_crtn.h3
-rw-r--r--drivers/scsi/lpfc/lpfc_ct.c22
-rw-r--r--drivers/scsi/lpfc/lpfc_els.c181
-rw-r--r--drivers/scsi/lpfc/lpfc_hbadisc.c120
-rw-r--r--drivers/scsi/lpfc/lpfc_init.c34
-rw-r--r--drivers/scsi/lpfc/lpfc_nportdisc.c145
-rw-r--r--drivers/scsi/lpfc/lpfc_scsi.c232
-rw-r--r--drivers/scsi/lpfc/lpfc_sli.c49
-rw-r--r--drivers/scsi/lpfc/lpfc_version.h2
-rw-r--r--drivers/scsi/lpfc/lpfc_vport.c16
-rw-r--r--drivers/scsi/mesh.c8
-rw-r--r--drivers/scsi/qla4xxx/ql4_os.c8
-rw-r--r--drivers/scsi/scsi.c9
-rw-r--r--drivers/scsi/scsi_debug.c110
-rw-r--r--drivers/scsi/scsi_error.c11
-rw-r--r--drivers/scsi/scsi_lib.c35
-rw-r--r--drivers/scsi/scsi_scan.c2
-rw-r--r--drivers/scsi/scsi_sysfs.c1
-rw-r--r--drivers/scsi/scsi_transport_iscsi.c395
-rw-r--r--drivers/scsi/sd.c7
-rw-r--r--drivers/scsi/sd.h (renamed from include/scsi/sd.h)5
-rw-r--r--drivers/scsi/sg.c3
-rw-r--r--drivers/scsi/sym53c8xx_2/sym_misc.h4
-rw-r--r--include/linux/crc-t10dif.h8
-rw-r--r--include/scsi/iscsi_if.h93
-rw-r--r--include/scsi/iscsi_proto.h3
-rw-r--r--include/scsi/libiscsi.h107
-rw-r--r--include/scsi/scsi.h18
-rw-r--r--include/scsi/scsi_cmnd.h1
-rw-r--r--include/scsi/scsi_device.h22
-rw-r--r--include/scsi/scsi_dh.h69
-rw-r--r--include/scsi/scsi_transport_iscsi.h91
-rw-r--r--include/scsi/sg.h1
-rw-r--r--lib/Kconfig7
-rw-r--r--lib/Makefile1
-rw-r--r--lib/crc-t10dif.c67
106 files changed, 14368 insertions, 14158 deletions
diff --git a/Documentation/scsi/aacraid.txt b/Documentation/scsi/aacraid.txt
index d16011a8618..709ca991a45 100644
--- a/Documentation/scsi/aacraid.txt
+++ b/Documentation/scsi/aacraid.txt
@@ -56,19 +56,33 @@ Supported Cards/Chipsets
9005:0285:9005:02d1 Adaptec 5405 (Voodoo40)
9005:0285:15d9:02d2 SMC AOC-USAS-S8i-LP
9005:0285:15d9:02d3 SMC AOC-USAS-S8iR-LP
- 9005:0285:9005:02d4 Adaptec 2045 (Voodoo04 Lite)
- 9005:0285:9005:02d5 Adaptec 2405 (Voodoo40 Lite)
- 9005:0285:9005:02d6 Adaptec 2445 (Voodoo44 Lite)
- 9005:0285:9005:02d7 Adaptec 2805 (Voodoo80 Lite)
+ 9005:0285:9005:02d4 Adaptec ASR-2045 (Voodoo04 Lite)
+ 9005:0285:9005:02d5 Adaptec ASR-2405 (Voodoo40 Lite)
+ 9005:0285:9005:02d6 Adaptec ASR-2445 (Voodoo44 Lite)
+ 9005:0285:9005:02d7 Adaptec ASR-2805 (Voodoo80 Lite)
+ 9005:0285:9005:02d8 Adaptec 5405G (Voodoo40 PM)
+ 9005:0285:9005:02d9 Adaptec 5445G (Voodoo44 PM)
+ 9005:0285:9005:02da Adaptec 5805G (Voodoo80 PM)
+ 9005:0285:9005:02db Adaptec 5085G (Voodoo08 PM)
+ 9005:0285:9005:02dc Adaptec 51245G (Voodoo124 PM)
+ 9005:0285:9005:02dd Adaptec 51645G (Voodoo164 PM)
+ 9005:0285:9005:02de Adaptec 52445G (Voodoo244 PM)
+ 9005:0285:9005:02df Adaptec ASR-2045G (Voodoo04 Lite PM)
+ 9005:0285:9005:02e0 Adaptec ASR-2405G (Voodoo40 Lite PM)
+ 9005:0285:9005:02e1 Adaptec ASR-2445G (Voodoo44 Lite PM)
+ 9005:0285:9005:02e2 Adaptec ASR-2805G (Voodoo80 Lite PM)
1011:0046:9005:0364 Adaptec 5400S (Mustang)
+ 1011:0046:9005:0365 Adaptec 5400S (Mustang)
9005:0287:9005:0800 Adaptec Themisto (Jupiter)
9005:0200:9005:0200 Adaptec Themisto (Jupiter)
9005:0286:9005:0800 Adaptec Callisto (Jupiter)
1011:0046:9005:1364 Dell PERC 2/QC (Quad Channel, Mustang)
+ 1011:0046:9005:1365 Dell PERC 2/QC (Quad Channel, Mustang)
1028:0001:1028:0001 Dell PERC 2/Si (Iguana)
1028:0003:1028:0003 Dell PERC 3/Si (SlimFast)
1028:0002:1028:0002 Dell PERC 3/Di (Opal)
- 1028:0004:1028:0004 Dell PERC 3/DiF (Iguana)
+ 1028:0004:1028:0004 Dell PERC 3/SiF (Iguana)
+ 1028:0004:1028:00d0 Dell PERC 3/DiF (Iguana)
1028:0002:1028:00d1 Dell PERC 3/DiV (Viper)
1028:0002:1028:00d9 Dell PERC 3/DiL (Lexus)
1028:000a:1028:0106 Dell PERC 3/DiJ (Jaguar)
diff --git a/block/bsg.c b/block/bsg.c
index 0b3b282f038..5fb9b0bdbe8 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -740,8 +740,13 @@ static int bsg_put_device(struct bsg_device *bd)
mutex_lock(&bsg_mutex);
do_free = atomic_dec_and_test(&bd->ref_count);
- if (!do_free)
+ if (!do_free) {
+ mutex_unlock(&bsg_mutex);
goto out;
+ }
+
+ hlist_del(&bd->dev_list);
+ mutex_unlock(&bsg_mutex);
dprintk("%s: tearing down\n", bd->name);
@@ -757,10 +762,8 @@ static int bsg_put_device(struct bsg_device *bd)
*/
ret = bsg_complete_all_commands(bd);
- hlist_del(&bd->dev_list);
kfree(bd);
out:
- mutex_unlock(&bsg_mutex);
kref_put(&q->bsg_dev.ref, bsg_kref_release_function);
if (do_free)
blk_put_queue(q);
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c
index 356fac6d105..5a1cf2580e1 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.c
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.c
@@ -71,6 +71,10 @@
#include "iscsi_iser.h"
+static struct scsi_host_template iscsi_iser_sht;
+static struct iscsi_transport iscsi_iser_transport;
+static struct scsi_transport_template *iscsi_iser_scsi_transport;
+
static unsigned int iscsi_max_lun = 512;
module_param_named(max_lun, iscsi_max_lun, uint, S_IRUGO);
@@ -91,7 +95,6 @@ iscsi_iser_recv(struct iscsi_conn *conn,
struct iscsi_hdr *hdr, char *rx_data, int rx_data_len)
{
int rc = 0;
- uint32_t ret_itt;
int datalen;
int ahslen;
@@ -107,12 +110,7 @@ iscsi_iser_recv(struct iscsi_conn *conn,
/* read AHS */
ahslen = hdr->hlength * 4;
- /* verify itt (itt encoding: age+cid+itt) */
- rc = iscsi_verify_itt(conn, hdr, &ret_itt);
-
- if (!rc)
- rc = iscsi_complete_pdu(conn, hdr, rx_data, rx_data_len);
-
+ rc = iscsi_complete_pdu(conn, hdr, rx_data, rx_data_len);
if (rc && rc != ISCSI_ERR_NO_SCSI_CMD)
goto error;
@@ -123,25 +121,33 @@ error:
/**
- * iscsi_iser_cmd_init - Initialize iSCSI SCSI_READ or SCSI_WRITE commands
+ * iscsi_iser_task_init - Initialize task
+ * @task: iscsi task
*
- **/
+ * Initialize the task for the scsi command or mgmt command.
+ */
static int
-iscsi_iser_cmd_init(struct iscsi_cmd_task *ctask)
+iscsi_iser_task_init(struct iscsi_task *task)
{
- struct iscsi_iser_conn *iser_conn = ctask->conn->dd_data;
- struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
+ struct iscsi_iser_conn *iser_conn = task->conn->dd_data;
+ struct iscsi_iser_task *iser_task = task->dd_data;
+
+ /* mgmt task */
+ if (!task->sc) {
+ iser_task->desc.data = task->data;
+ return 0;
+ }
- iser_ctask->command_sent = 0;
- iser_ctask->iser_conn = iser_conn;
- iser_ctask_rdma_init(iser_ctask);
+ iser_task->command_sent = 0;
+ iser_task->iser_conn = iser_conn;
+ iser_task_rdma_init(iser_task);
return 0;
}
/**
- * iscsi_mtask_xmit - xmit management(immediate) task
+ * iscsi_iser_mtask_xmit - xmit management(immediate) task
* @conn: iscsi connection
- * @mtask: task management task
+ * @task: task management task
*
* Notes:
* The function can return -EAGAIN in which case caller must
@@ -150,20 +156,19 @@ iscsi_iser_cmd_init(struct iscsi_cmd_task *ctask)
*
**/
static int
-iscsi_iser_mtask_xmit(struct iscsi_conn *conn,
- struct iscsi_mgmt_task *mtask)
+iscsi_iser_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task)
{
int error = 0;
- debug_scsi("mtask deq [cid %d itt 0x%x]\n", conn->id, mtask->itt);
+ debug_scsi("task deq [cid %d itt 0x%x]\n", conn->id, task->itt);
- error = iser_send_control(conn, mtask);
+ error = iser_send_control(conn, task);
- /* since iser xmits control with zero copy, mtasks can not be recycled
+ /* since iser xmits control with zero copy, tasks can not be recycled
* right after sending them.
* The recycling scheme is based on whether a response is expected
- * - if yes, the mtask is recycled at iscsi_complete_pdu
- * - if no, the mtask is recycled at iser_snd_completion
+ * - if yes, the task is recycled at iscsi_complete_pdu
+ * - if no, the task is recycled at iser_snd_completion
*/
if (error && error != -ENOBUFS)
iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
@@ -172,97 +177,86 @@ iscsi_iser_mtask_xmit(struct iscsi_conn *conn,
}
static int
-iscsi_iser_ctask_xmit_unsol_data(struct iscsi_conn *conn,
- struct iscsi_cmd_task *ctask)
+iscsi_iser_task_xmit_unsol_data(struct iscsi_conn *conn,
+ struct iscsi_task *task)
{
struct iscsi_data hdr;
int error = 0;
/* Send data-out PDUs while there's still unsolicited data to send */
- while (ctask->unsol_count > 0) {
- iscsi_prep_unsolicit_data_pdu(ctask, &hdr);
+ while (task->unsol_count > 0) {
+ iscsi_prep_unsolicit_data_pdu(task, &hdr);
debug_scsi("Sending data-out: itt 0x%x, data count %d\n",
- hdr.itt, ctask->data_count);
+ hdr.itt, task->data_count);
/* the buffer description has been passed with the command */
/* Send the command */
- error = iser_send_data_out(conn, ctask, &hdr);
+ error = iser_send_data_out(conn, task, &hdr);
if (error) {
- ctask->unsol_datasn--;
- goto iscsi_iser_ctask_xmit_unsol_data_exit;
+ task->unsol_datasn--;
+ goto iscsi_iser_task_xmit_unsol_data_exit;
}
- ctask->unsol_count -= ctask->data_count;
+ task->unsol_count -= task->data_count;
debug_scsi("Need to send %d more as data-out PDUs\n",
- ctask->unsol_count);
+ task->unsol_count);
}
-iscsi_iser_ctask_xmit_unsol_data_exit:
+iscsi_iser_task_xmit_unsol_data_exit:
return error;
}
static int
-iscsi_iser_ctask_xmit(struct iscsi_conn *conn,
- struct iscsi_cmd_task *ctask)
+iscsi_iser_task_xmit(struct iscsi_task *task)
{
- struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
+ struct iscsi_conn *conn = task->conn;
+ struct iscsi_iser_task *iser_task = task->dd_data;
int error = 0;
- if (ctask->sc->sc_data_direction == DMA_TO_DEVICE) {
- BUG_ON(scsi_bufflen(ctask->sc) == 0);
+ if (!task->sc)
+ return iscsi_iser_mtask_xmit(conn, task);
+
+ if (task->sc->sc_data_direction == DMA_TO_DEVICE) {
+ BUG_ON(scsi_bufflen(task->sc) == 0);
debug_scsi("cmd [itt %x total %d imm %d unsol_data %d\n",
- ctask->itt, scsi_bufflen(ctask->sc),
- ctask->imm_count, ctask->unsol_count);
+ task->itt, scsi_bufflen(task->sc),
+ task->imm_count, task->unsol_count);
}
- debug_scsi("ctask deq [cid %d itt 0x%x]\n",
- conn->id, ctask->itt);
+ debug_scsi("task deq [cid %d itt 0x%x]\n",
+ conn->id, task->itt);
/* Send the cmd PDU */
- if (!iser_ctask->command_sent) {
- error = iser_send_command(conn, ctask);
+ if (!iser_task->command_sent) {
+ error = iser_send_command(conn, task);
if (error)
- goto iscsi_iser_ctask_xmit_exit;
- iser_ctask->command_sent = 1;
+ goto iscsi_iser_task_xmit_exit;
+ iser_task->command_sent = 1;
}
/* Send unsolicited data-out PDU(s) if necessary */
- if (ctask->unsol_count)
- error = iscsi_iser_ctask_xmit_unsol_data(conn, ctask);
+ if (task->unsol_count)
+ error = iscsi_iser_task_xmit_unsol_data(conn, task);
- iscsi_iser_ctask_xmit_exit:
+ iscsi_iser_task_xmit_exit:
if (error && error != -ENOBUFS)
iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
return error;
}
static void
-iscsi_iser_cleanup_ctask(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
+iscsi_iser_cleanup_task(struct iscsi_conn *conn, struct iscsi_task *task)
{
- struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
+ struct iscsi_iser_task *iser_task = task->dd_data;
- if (iser_ctask->status == ISER_TASK_STATUS_STARTED) {
- iser_ctask->status = ISER_TASK_STATUS_COMPLETED;
- iser_ctask_rdma_finalize(iser_ctask);
- }
-}
-
-static struct iser_conn *
-iscsi_iser_ib_conn_lookup(__u64 ep_handle)
-{
- struct iser_conn *ib_conn;
- struct iser_conn *uib_conn = (struct iser_conn *)(unsigned long)ep_handle;
+ /* mgmt tasks do not need special cleanup */
+ if (!task->sc)
+ return;
- mutex_lock(&ig.connlist_mutex);
- list_for_each_entry(ib_conn, &ig.connlist, conn_list) {
- if (ib_conn == uib_conn) {
- mutex_unlock(&ig.connlist_mutex);
- return ib_conn;
- }
+ if (iser_task->status == ISER_TASK_STATUS_STARTED) {
+ iser_task->status = ISER_TASK_STATUS_COMPLETED;
+ iser_task_rdma_finalize(iser_task);
}
- mutex_unlock(&ig.connlist_mutex);
- iser_err("no conn exists for eph %llx\n",(unsigned long long)ep_handle);
- return NULL;
}
static struct iscsi_cls_conn *
@@ -272,7 +266,7 @@ iscsi_iser_conn_create(struct iscsi_cls_session *cls_session, uint32_t conn_idx)
struct iscsi_cls_conn *cls_conn;
struct iscsi_iser_conn *iser_conn;
- cls_conn = iscsi_conn_setup(cls_session, conn_idx);
+ cls_conn = iscsi_conn_setup(cls_session, sizeof(*iser_conn), conn_idx);
if (!cls_conn)
return NULL;
conn = cls_conn->dd_data;
@@ -283,21 +277,11 @@ iscsi_iser_conn_create(struct iscsi_cls_session *cls_session, uint32_t conn_idx)
*/
conn->max_recv_dlength = 128;
- iser_conn = kzalloc(sizeof(*iser_conn), GFP_KERNEL);
- if (!iser_conn)
- goto conn_alloc_fail;
-
- /* currently this is the only field which need to be initiated */
- rwlock_init(&iser_conn->lock);
-
+ iser_conn = conn->dd_data;
conn->dd_data = iser_conn;
iser_conn->iscsi_conn = conn;
return cls_conn;
-
-conn_alloc_fail:
- iscsi_conn_teardown(cls_conn);
- return NULL;
}
static void
@@ -305,11 +289,18 @@ iscsi_iser_conn_destroy(struct iscsi_cls_conn *cls_conn)
{
struct iscsi_conn *conn = cls_conn->dd_data;
struct iscsi_iser_conn *iser_conn = conn->dd_data;
+ struct iser_conn *ib_conn = iser_conn->ib_conn;
iscsi_conn_teardown(cls_conn);
- if (iser_conn->ib_conn)
- iser_conn->ib_conn->iser_conn = NULL;
- kfree(iser_conn);
+ /*
+ * Userspace will normally call the stop callback and
+ * already have freed the ib_conn, but if it goofed up then
+ * we free it here.
+ */
+ if (ib_conn) {
+ ib_conn->iser_conn = NULL;
+ iser_conn_put(ib_conn);
+ }
}
static int
@@ -320,6 +311,7 @@ iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session,
struct iscsi_conn *conn = cls_conn->dd_data;
struct iscsi_iser_conn *iser_conn;
struct iser_conn *ib_conn;
+ struct iscsi_endpoint *ep;
int error;
error = iscsi_conn_bind(cls_session, cls_conn, is_leading);
@@ -328,12 +320,14 @@ iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session,
/* the transport ep handle comes from user space so it must be
* verified against the global ib connections list */
- ib_conn = iscsi_iser_ib_conn_lookup(transport_eph);
- if (!ib_conn) {
+ ep = iscsi_lookup_endpoint(transport_eph);
+ if (!ep) {
iser_err("can't bind eph %llx\n",
(unsigned long long)transport_eph);
return -EINVAL;
}
+ ib_conn = ep->dd_data;
+
/* binds the iSER connection retrieved from the previously
* connected ep_handle to the iSCSI layer connection. exchanges
* connection pointers */
@@ -341,10 +335,30 @@ iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session,
iser_conn = conn->dd_data;
ib_conn->iser_conn = iser_conn;
iser_conn->ib_conn = ib_conn;
+ iser_conn_get(ib_conn);
+ return 0;
+}
- conn->recv_lock = &iser_conn->lock;
+static void
+iscsi_iser_conn_stop(struct iscsi_cls_conn *cls_conn, int flag)
+{
+ struct iscsi_conn *conn = cls_conn->dd_data;
+ struct iscsi_iser_conn *iser_conn = conn->dd_data;
+ struct iser_conn *ib_conn = iser_conn->ib_conn;
- return 0;
+ /*
+ * Userspace may have goofed up and not bound the connection or
+ * might have only partially setup the connection.
+ */
+ if (ib_conn) {
+ iscsi_conn_stop(cls_conn, flag);
+ /*
+ * There is no unbind event so the stop callback
+ * must release the ref from the bind.
+ */
+ iser_conn_put(ib_conn);
+ }
+ iser_conn->ib_conn = NULL;
}
static int
@@ -360,55 +374,75 @@ iscsi_iser_conn_start(struct iscsi_cls_conn *cls_conn)
return iscsi_conn_start(cls_conn);
}
-static struct iscsi_transport iscsi_iser_transport;
+static void iscsi_iser_session_destroy(struct iscsi_cls_session *cls_session)
+{
+ struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
+
+ iscsi_host_remove(shost);
+ iscsi_host_free(shost);
+}
static struct iscsi_cls_session *
-iscsi_iser_session_create(struct iscsi_transport *iscsit,
- struct scsi_transport_template *scsit,
- uint16_t cmds_max, uint16_t qdepth,
- uint32_t initial_cmdsn, uint32_t *hostno)
+iscsi_iser_session_create(struct iscsi_endpoint *ep,
+ uint16_t cmds_max, uint16_t qdepth,
+ uint32_t initial_cmdsn, uint32_t *hostno)
{
struct iscsi_cls_session *cls_session;
struct iscsi_session *session;
+ struct Scsi_Host *shost;
int i;
- uint32_t hn;
- struct iscsi_cmd_task *ctask;
- struct iscsi_mgmt_task *mtask;
- struct iscsi_iser_cmd_task *iser_ctask;
- struct iser_desc *desc;
+ struct iscsi_task *task;
+ struct iscsi_iser_task *iser_task;
+ struct iser_conn *ib_conn;
+
+ shost = iscsi_host_alloc(&iscsi_iser_sht, 0, ISCSI_MAX_CMD_PER_LUN);
+ if (!shost)
+ return NULL;
+ shost->transportt = iscsi_iser_scsi_transport;
+ shost->max_lun = iscsi_max_lun;
+ shost->max_id = 0;
+ shost->max_channel = 0;
+ shost->max_cmd_len = 16;
+
+ /*
+ * older userspace tools (before 2.0-870) did not pass us
+ * the leading conn's ep so this will be NULL;
+ */
+ if (ep)
+ ib_conn = ep->dd_data;
+
+ if (iscsi_host_add(shost,
+ ep ? ib_conn->device->ib_device->dma_device : NULL))
+ goto free_host;
+ *hostno = shost->host_no;
/*
* we do not support setting can_queue cmd_per_lun from userspace yet
* because we preallocate so many resources
*/
- cls_session = iscsi_session_setup(iscsit, scsit,
+ cls_session = iscsi_session_setup(&iscsi_iser_transport, shost,
ISCSI_DEF_XMIT_CMDS_MAX,
- ISCSI_MAX_CMD_PER_LUN,
- sizeof(struct iscsi_iser_cmd_task),
- sizeof(struct iser_desc),
- initial_cmdsn, &hn);
+ sizeof(struct iscsi_iser_task),
+ initial_cmdsn, 0);
if (!cls_session)
- return NULL;
-
- *hostno = hn;
- session = class_to_transport_session(cls_session);
+ goto remove_host;
+ session = cls_session->dd_data;
+ shost->can_queue = session->scsi_cmds_max;
/* libiscsi setup itts, data and pool so just set desc fields */
for (i = 0; i < session->cmds_max; i++) {
- ctask = session->cmds[i];
- iser_ctask = ctask->dd_data;
- ctask->hdr = (struct iscsi_cmd *)&iser_ctask->desc.iscsi_header;
- ctask->hdr_max = sizeof(iser_ctask->desc.iscsi_header);
- }
-
- for (i = 0; i < session->mgmtpool_max; i++) {
- mtask = session->mgmt_cmds[i];
- desc = mtask->dd_data;
- mtask->hdr = &desc->iscsi_header;
- desc->data = mtask->data;
+ task = session->cmds[i];
+ iser_task = task->dd_data;
+ task->hdr = (struct iscsi_cmd *)&iser_task->desc.iscsi_header;
+ task->hdr_max = sizeof(iser_task->desc.iscsi_header);
}
-
return cls_session;
+
+remove_host:
+ iscsi_host_remove(shost);
+free_host:
+ iscsi_host_free(shost);
+ return NULL;
}
static int
@@ -481,34 +515,37 @@ iscsi_iser_conn_get_stats(struct iscsi_cls_conn *cls_conn, struct iscsi_stats *s
stats->custom[3].value = conn->fmr_unalign_cnt;
}
-static int
-iscsi_iser_ep_connect(struct sockaddr *dst_addr, int non_blocking,
- __u64 *ep_handle)
+static struct iscsi_endpoint *
+iscsi_iser_ep_connect(struct sockaddr *dst_addr, int non_blocking)
{
int err;
struct iser_conn *ib_conn;
+ struct iscsi_endpoint *ep;
- err = iser_conn_init(&ib_conn);
- if (err)
- goto out;
+ ep = iscsi_create_endpoint(sizeof(*ib_conn));
+ if (!ep)
+ return ERR_PTR(-ENOMEM);
- err = iser_connect(ib_conn, NULL, (struct sockaddr_in *)dst_addr, non_blocking);
- if (!err)
- *ep_handle = (__u64)(unsigned long)ib_conn;
+ ib_conn = ep->dd_data;
+ ib_conn->ep = ep;
+ iser_conn_init(ib_conn);
-out:
- return err;
+ err = iser_connect(ib_conn, NULL, (struct sockaddr_in *)dst_addr,
+ non_blocking);
+ if (err) {
+ iscsi_destroy_endpoint(ep);
+ return ERR_PTR(err);
+ }
+ return ep;
}
static int
-iscsi_iser_ep_poll(__u64 ep_handle, int timeout_ms)
+iscsi_iser_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
{
- struct iser_conn *ib_conn = iscsi_iser_ib_conn_lookup(ep_handle);
+ struct iser_conn *ib_conn;
int rc;
- if (!ib_conn)
- return -EINVAL;
-
+ ib_conn = ep->dd_data;
rc = wait_event_interruptible_timeout(ib_conn->wait,
ib_conn->state == ISER_CONN_UP,
msecs_to_jiffies(timeout_ms));
@@ -530,13 +567,21 @@ iscsi_iser_ep_poll(__u64 ep_handle, int timeout_ms)
}
static void
-iscsi_iser_ep_disconnect(__u64 ep_handle)
+iscsi_iser_ep_disconnect(struct iscsi_endpoint *ep)
{
struct iser_conn *ib_conn;
- ib_conn = iscsi_iser_ib_conn_lookup(ep_handle);
- if (!ib_conn)
- return;
+ ib_conn = ep->dd_data;
+ if (ib_conn->iser_conn)
+ /*
+ * Must suspend xmit path if the ep is bound to the
+ * iscsi_conn, so we know we are not accessing the ib_conn
+ * when we free it.
+ *
+ * This may not be bound if the ep poll failed.
+ */
+ iscsi_suspend_tx(ib_conn->iser_conn->iscsi_conn);
+
iser_err("ib conn %p state %d\n",ib_conn, ib_conn->state);
iser_conn_terminate(ib_conn);
@@ -547,7 +592,6 @@ static struct scsi_host_template iscsi_iser_sht = {
.name = "iSCSI Initiator over iSER, v." DRV_VER,
.queuecommand = iscsi_queuecommand,
.change_queue_depth = iscsi_change_queue_depth,
- .can_queue = ISCSI_DEF_XMIT_CMDS_MAX - 1,
.sg_tablesize = ISCSI_ISER_SG_TABLESIZE,
.max_sectors = 1024,
.cmd_per_lun = ISCSI_MAX_CMD_PER_LUN,
@@ -581,17 +625,14 @@ static struct iscsi_transport iscsi_iser_transport = {
ISCSI_USERNAME | ISCSI_PASSWORD |
ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN |
ISCSI_FAST_ABORT | ISCSI_ABORT_TMO |
- ISCSI_PING_TMO | ISCSI_RECV_TMO,
+ ISCSI_PING_TMO | ISCSI_RECV_TMO |
+ ISCSI_IFACE_NAME | ISCSI_INITIATOR_NAME,
.host_param_mask = ISCSI_HOST_HWADDRESS |
ISCSI_HOST_NETDEV_NAME |
ISCSI_HOST_INITIATOR_NAME,
- .host_template = &iscsi_iser_sht,
- .conndata_size = sizeof(struct iscsi_conn),
- .max_lun = ISCSI_ISER_MAX_LUN,
- .max_cmd_len = ISCSI_ISER_MAX_CMD_LEN,
/* session management */
.create_session = iscsi_iser_session_create,
- .destroy_session = iscsi_session_teardown,
+ .destroy_session = iscsi_iser_session_destroy,
/* connection management */
.create_conn = iscsi_iser_conn_create,
.bind_conn = iscsi_iser_conn_bind,
@@ -600,17 +641,16 @@ static struct iscsi_transport iscsi_iser_transport = {
.get_conn_param = iscsi_conn_get_param,
.get_session_param = iscsi_session_get_param,
.start_conn = iscsi_iser_conn_start,
- .stop_conn = iscsi_conn_stop,
+ .stop_conn = iscsi_iser_conn_stop,
/* iscsi host params */
.get_host_param = iscsi_host_get_param,
.set_host_param = iscsi_host_set_param,
/* IO */
.send_pdu = iscsi_conn_send_pdu,
.get_stats = iscsi_iser_conn_get_stats,
- .init_cmd_task = iscsi_iser_cmd_init,
- .xmit_cmd_task = iscsi_iser_ctask_xmit,
- .xmit_mgmt_task = iscsi_iser_mtask_xmit,
- .cleanup_cmd_task = iscsi_iser_cleanup_ctask,
+ .init_task = iscsi_iser_task_init,
+ .xmit_task = iscsi_iser_task_xmit,
+ .cleanup_task = iscsi_iser_cleanup_task,
/* recovery */
.session_recovery_timedout = iscsi_session_recovery_timedout,
@@ -630,8 +670,6 @@ static int __init iser_init(void)
return -EINVAL;
}
- iscsi_iser_transport.max_lun = iscsi_max_lun;
-
memset(&ig, 0, sizeof(struct iser_global));
ig.desc_cache = kmem_cache_create("iser_descriptors",
@@ -647,7 +685,9 @@ static int __init iser_init(void)
mutex_init(&ig.connlist_mutex);
INIT_LIST_HEAD(&ig.connlist);
- if (!iscsi_register_transport(&iscsi_iser_transport)) {
+ iscsi_iser_scsi_transport = iscsi_register_transport(
+ &iscsi_iser_transport);
+ if (!iscsi_iser_scsi_transport) {
iser_err("iscsi_register_transport failed\n");
err = -EINVAL;
goto register_transport_failure;
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h
index 0e10703cf59..81a82628a5f 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.h
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.h
@@ -94,7 +94,6 @@
/* support upto 512KB in one RDMA */
#define ISCSI_ISER_SG_TABLESIZE (0x80000 >> SHIFT_4K)
#define ISCSI_ISER_MAX_LUN 256
-#define ISCSI_ISER_MAX_CMD_LEN 16
/* QP settings */
/* Maximal bounds on received asynchronous PDUs */
@@ -172,7 +171,8 @@ struct iser_data_buf {
/* fwd declarations */
struct iser_device;
struct iscsi_iser_conn;
-struct iscsi_iser_cmd_task;
+struct iscsi_iser_task;
+struct iscsi_endpoint;
struct iser_mem_reg {
u32 lkey;
@@ -196,7 +196,7 @@ struct iser_regd_buf {
#define MAX_REGD_BUF_VECTOR_LEN 2
struct iser_dto {
- struct iscsi_iser_cmd_task *ctask;
+ struct iscsi_iser_task *task;
struct iser_conn *ib_conn;
int notify_enable;
@@ -240,7 +240,9 @@ struct iser_device {
struct iser_conn {
struct iscsi_iser_conn *iser_conn; /* iser conn for upcalls */
+ struct iscsi_endpoint *ep;
enum iser_ib_conn_state state; /* rdma connection state */
+ atomic_t refcount;
spinlock_t lock; /* used for state changes */
struct iser_device *device; /* device context */
struct rdma_cm_id *cma_id; /* CMA ID */
@@ -259,11 +261,9 @@ struct iser_conn {
struct iscsi_iser_conn {
struct iscsi_conn *iscsi_conn;/* ptr to iscsi conn */
struct iser_conn *ib_conn; /* iSER IB conn */
-
- rwlock_t lock;
};
-struct iscsi_iser_cmd_task {
+struct iscsi_iser_task {
struct iser_desc desc;
struct iscsi_iser_conn *iser_conn;
enum iser_task_status status;
@@ -296,22 +296,26 @@ extern int iser_debug_level;
/* allocate connection resources needed for rdma functionality */
int iser_conn_set_full_featured_mode(struct iscsi_conn *conn);
-int iser_send_control(struct iscsi_conn *conn,
- struct iscsi_mgmt_task *mtask);
+int iser_send_control(struct iscsi_conn *conn,
+ struct iscsi_task *task);
-int iser_send_command(struct iscsi_conn *conn,
- struct iscsi_cmd_task *ctask);
+int iser_send_command(struct iscsi_conn *conn,
+ struct iscsi_task *task);
-int iser_send_data_out(struct iscsi_conn *conn,
- struct iscsi_cmd_task *ctask,
- struct iscsi_data *hdr);
+int iser_send_data_out(struct iscsi_conn *conn,
+ struct iscsi_task *task,
+ struct iscsi_data *hdr);
void iscsi_iser_recv(struct iscsi_conn *conn,
struct iscsi_hdr *hdr,
char *rx_data,
int rx_data_len);
-int iser_conn_init(struct iser_conn **ib_conn);
+void iser_conn_init(struct iser_conn *ib_conn);
+
+void iser_conn_get(struct iser_conn *ib_conn);
+
+void iser_conn_put(struct iser_conn *ib_conn);
void iser_conn_terminate(struct iser_conn *ib_conn);
@@ -320,9 +324,9 @@ void iser_rcv_completion(struct iser_desc *desc,
void iser_snd_completion(struct iser_desc *desc);
-void iser_ctask_rdma_init(struct iscsi_iser_cmd_task *ctask);
+void iser_task_rdma_init(struct iscsi_iser_task *task);
-void iser_ctask_rdma_finalize(struct iscsi_iser_cmd_task *ctask);
+void iser_task_rdma_finalize(struct iscsi_iser_task *task);
void iser_dto_buffs_release(struct iser_dto *dto);
@@ -332,10 +336,10 @@ void iser_reg_single(struct iser_device *device,
struct iser_regd_buf *regd_buf,
enum dma_data_direction direction);
-void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_cmd_task *ctask,
+void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_task *task,
enum iser_data_dir cmd_dir);
-int iser_reg_rdma_mem(struct iscsi_iser_cmd_task *ctask,
+int iser_reg_rdma_mem(struct iscsi_iser_task *task,
enum iser_data_dir cmd_dir);
int iser_connect(struct iser_conn *ib_conn,
@@ -355,10 +359,10 @@ int iser_post_send(struct iser_desc *tx_desc);
int iser_conn_state_comp(struct iser_conn *ib_conn,
enum iser_ib_conn_state comp);
-int iser_dma_map_task_data(struct iscsi_iser_cmd_task *iser_ctask,
+int iser_dma_map_task_data(struct iscsi_iser_task *iser_task,
struct iser_data_buf *data,
enum iser_data_dir iser_dir,
enum dma_data_direction dma_dir);
-void iser_dma_unmap_task_data(struct iscsi_iser_cmd_task *iser_ctask);
+void iser_dma_unmap_task_data(struct iscsi_iser_task *iser_task);
#endif
diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c
index 31ad498bdc5..cdd28318904 100644
--- a/drivers/infiniband/ulp/iser/iser_initiator.c
+++ b/drivers/infiniband/ulp/iser/iser_initiator.c
@@ -64,46 +64,46 @@ static void iser_dto_add_regd_buff(struct iser_dto *dto,
/* Register user buffer memory and initialize passive rdma
* dto descriptor. Total data size is stored in
- * iser_ctask->data[ISER_DIR_IN].data_len
+ * iser_task->data[ISER_DIR_IN].data_len
*/
-static int iser_prepare_read_cmd(struct iscsi_cmd_task *ctask,
+static int iser_prepare_read_cmd(struct iscsi_task *task,
unsigned int edtl)
{
- struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
+ struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_regd_buf *regd_buf;
int err;
- struct iser_hdr *hdr = &iser_ctask->desc.iser_header;
- struct iser_data_buf *buf_in = &iser_ctask->data[ISER_DIR_IN];
+ struct iser_hdr *hdr = &iser_task->desc.iser_header;
+ struct iser_data_buf *buf_in = &iser_task->data[ISER_DIR_IN];
- err = iser_dma_map_task_data(iser_ctask,
+ err = iser_dma_map_task_data(iser_task,
buf_in,
ISER_DIR_IN,
DMA_FROM_DEVICE);
if (err)
return err;
- if (edtl > iser_ctask->data[ISER_DIR_IN].data_len) {
+ if (edtl > iser_task->data[ISER_DIR_IN].data_len) {
iser_err("Total data length: %ld, less than EDTL: "
"%d, in READ cmd BHS itt: %d, conn: 0x%p\n",
- iser_ctask->data[ISER_DIR_IN].data_len, edtl,
- ctask->itt, iser_ctask->iser_conn);
+ iser_task->data[ISER_DIR_IN].data_len, edtl,
+ task->itt, iser_task->iser_conn);
return -EINVAL;
}
- err = iser_reg_rdma_mem(iser_ctask,ISER_DIR_IN);
+ err = iser_reg_rdma_mem(iser_task,ISER_DIR_IN);
if (err) {
iser_err("Failed to set up Data-IN RDMA\n");
return err;
}
- regd_buf = &iser_ctask->rdma_regd[ISER_DIR_IN];
+ regd_buf = &iser_task->rdma_regd[ISER_DIR_IN];
hdr->flags |= ISER_RSV;
hdr->read_stag = cpu_to_be32(regd_buf->reg.rkey);
hdr->read_va = cpu_to_be64(regd_buf->reg.va);
iser_dbg("Cmd itt:%d READ tags RKEY:%#.4X VA:%#llX\n",
- ctask->itt, regd_buf->reg.rkey,
+ task->itt, regd_buf->reg.rkey,
(unsigned long long)regd_buf->reg.va);
return 0;
@@ -111,43 +111,43 @@ static int iser_prepare_read_cmd(struct iscsi_cmd_task *ctask,
/* Register user buffer memory and initialize passive rdma
* dto descriptor. Total data size is stored in
- * ctask->data[ISER_DIR_OUT].data_len
+ * task->data[ISER_DIR_OUT].data_len
*/
static int
-iser_prepare_write_cmd(struct iscsi_cmd_task *ctask,
+iser_prepare_write_cmd(struct iscsi_task *task,
unsigned int imm_sz,
unsigned int unsol_sz,
unsigned int edtl)
{
- struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
+ struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_regd_buf *regd_buf;
int err;
- struct iser_dto *send_dto = &iser_ctask->desc.dto;
- struct iser_hdr *hdr = &iser_ctask->desc.iser_header;
- struct iser_data_buf *buf_out = &iser_ctask->data[ISER_DIR_OUT];
+ struct iser_dto *send_dto = &iser_task->desc.dto;
+ struct iser_hdr *hdr = &iser_task->desc.iser_header;
+ struct iser_data_buf *buf_out = &iser_task->data[ISER_DIR_OUT];
- err = iser_dma_map_task_data(iser_ctask,
+ err = iser_dma_map_task_data(iser_task,
buf_out,
ISER_DIR_OUT,
DMA_TO_DEVICE);
if (err)
return err;
- if (edtl > iser_ctask->data[ISER_DIR_OUT].data_len) {
+ if (edtl > iser_task->data[ISER_DIR_OUT].data_len) {
iser_err("Total data length: %ld, less than EDTL: %d, "
"in WRITE cmd BHS itt: %d, conn: 0x%p\n",
- iser_ctask->data[ISER_DIR_OUT].data_len,
- edtl, ctask->itt, ctask->conn);
+ iser_task->data[ISER_DIR_OUT].data_len,
+ edtl, task->itt, task->conn);
return -EINVAL;
}
- err = iser_reg_rdma_mem(iser_ctask,ISER_DIR_OUT);
+ err = iser_reg_rdma_mem(iser_task,ISER_DIR_OUT);
if (err != 0) {
iser_err("Failed to register write cmd RDMA mem\n");
return err;
}
- regd_buf = &iser_ctask->rdma_regd[ISER_DIR_OUT];
+ regd_buf = &iser_task->rdma_regd[ISER_DIR_OUT];
if (unsol_sz < edtl) {
hdr->flags |= ISER_WSV;
@@ -156,13 +156,13 @@ iser_prepare_write_cmd(struct iscsi_cmd_task *ctask,
iser_dbg("Cmd itt:%d, WRITE tags, RKEY:%#.4X "
"VA:%#llX + unsol:%d\n",
- ctask->itt, regd_buf->reg.rkey,
+ task->itt, regd_buf->reg.rkey,
(unsigned long long)regd_buf->reg.va, unsol_sz);
}
if (imm_sz > 0) {
iser_dbg("Cmd itt:%d, WRITE, adding imm.data sz: %d\n",
- ctask->itt, imm_sz);
+ task->itt, imm_sz);
iser_dto_add_regd_buff(send_dto,
regd_buf,
0,
@@ -314,38 +314,38 @@ iser_check_xmit(struct iscsi_conn *conn, void *task)
/**
* iser_send_command - send command PDU
*/
-int iser_send_command(struct iscsi_conn *conn,
- struct iscsi_cmd_task *ctask)
+int iser_send_command(struct iscsi_conn *conn,
+ struct iscsi_task *task)
{
struct iscsi_iser_conn *iser_conn = conn->dd_data;
- struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
+ struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_dto *send_dto = NULL;
unsigned long edtl;
int err = 0;
struct iser_data_buf *data_buf;
- struct iscsi_cmd *hdr = ctask->hdr;
- struct scsi_cmnd *sc = ctask->sc;
+ struct iscsi_cmd *hdr = task->hdr;
+ struct scsi_cmnd *sc = task->sc;
if (!iser_conn_state_comp(iser_conn->ib_conn, ISER_CONN_UP)) {
iser_err("Failed to send, conn: 0x%p is not up\n", iser_conn->ib_conn);
return -EPERM;
}
- if (iser_check_xmit(conn, ctask))
+ if (iser_check_xmit(conn, task))
return -ENOBUFS;
edtl = ntohl(hdr->data_length);
/* build the tx desc regd header and add it to the tx desc dto */
- iser_ctask->desc.type = ISCSI_TX_SCSI_COMMAND;
- send_dto = &iser_ctask->desc.dto;
- send_dto->ctask = iser_ctask;
- iser_create_send_desc(iser_conn, &iser_ctask->desc);
+ iser_task->desc.type = ISCSI_TX_SCSI_COMMAND;
+ send_dto = &iser_task->desc.dto;
+ send_dto->task = iser_task;
+ iser_create_send_desc(iser_conn, &iser_task->desc);
if (hdr->flags & ISCSI_FLAG_CMD_READ)
- data_buf = &iser_ctask->data[ISER_DIR_IN];
+ data_buf = &iser_task->data[ISER_DIR_IN];
else
- data_buf = &iser_ctask->data[ISER_DIR_OUT];
+ data_buf = &iser_task->data[ISER_DIR_OUT];
if (scsi_sg_count(sc)) { /* using a scatter list */
data_buf->buf = scsi_sglist(sc);
@@ -355,15 +355,15 @@ int iser_send_command(struct iscsi_conn *conn,
data_buf->data_len = scsi_bufflen(sc);
if (hdr->flags & ISCSI_FLAG_CMD_READ) {
- err = iser_prepare_read_cmd(ctask, edtl);
+ err = iser_prepare_read_cmd(task, edtl);
if (err)
goto send_command_error;
}
if (hdr->flags & ISCSI_FLAG_CMD_WRITE) {
- err = iser_prepare_write_cmd(ctask,
- ctask->imm_count,
- ctask->imm_count +
- ctask->unsol_count,
+ err = iser_prepare_write_cmd(task,
+ task->imm_count,
+ task->imm_count +
+ task->unsol_count,
edtl);
if (err)
goto send_command_error;
@@ -378,27 +378,27 @@ int iser_send_command(struct iscsi_conn *conn,
goto send_command_error;
}
- iser_ctask->status = ISER_TASK_STATUS_STARTED;
+ iser_task->status = ISER_TASK_STATUS_STARTED;
- err = iser_post_send(&iser_ctask->desc);
+ err = iser_post_send(&iser_task->desc);
if (!err)
return 0;
send_command_error:
iser_dto_buffs_release(send_dto);
- iser_err("conn %p failed ctask->itt %d err %d\n",conn, ctask->itt, err);
+ iser_err("conn %p failed task->itt %d err %d\n",conn, task->itt, err);
return err;
}
/**
* iser_send_data_out - send data out PDU
*/
-int iser_send_data_out(struct iscsi_conn *conn,
- struct iscsi_cmd_task *ctask,
+int iser_send_data_out(struct iscsi_conn *conn,
+ struct iscsi_task *task,
struct iscsi_data *hdr)
{
struct iscsi_iser_conn *iser_conn = conn->dd_data;
- struct iscsi_iser_cmd_task *iser_ctask = ctask->dd_data;
+ struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_desc *tx_desc = NULL;
struct iser_dto *send_dto = NULL;
unsigned long buf_offset;
@@ -411,7 +411,7 @@ int iser_send_data_out(struct iscsi_conn *conn,
return -EPERM;
}
- if (iser_check_xmit(conn, ctask))
+ if (iser_check_xmit(conn, task))
return -ENOBUFS;
itt = (__force uint32_t)hdr->itt;
@@ -432,7 +432,7 @@ int iser_send_data_out(struct iscsi_conn *conn,
/* build the tx desc regd header and add it to the tx desc dto */
send_dto = &tx_desc->dto;
- send_dto->ctask = iser_ctask;
+ send_dto->task = iser_task;
iser_create_send_desc(iser_conn, tx_desc);
iser_reg_single(iser_conn->ib_conn->device,
@@ -440,15 +440,15 @@ int iser_send_data_out(struct iscsi_conn *conn,
/* all data was registered for RDMA, we can use the lkey */
iser_dto_add_regd_buff(send_dto,
- &iser_ctask->rdma_regd[ISER_DIR_OUT],
+ &iser_task->rdma_regd[ISER_DIR_OUT],
buf_offset,
data_seg_len);
- if (buf_offset + data_seg_len > iser_ctask->data[ISER_DIR_OUT].data_len) {
+ if (buf_offset + data_seg_len > iser_task->data[ISER_DIR_OUT].data_len) {
iser_err("Offset:%ld & DSL:%ld in Data-Out "
"inconsistent with total len:%ld, itt:%d\n",
buf_offset, data_seg_len,
- iser_ctask->data[ISER_DIR_OUT].data_len, itt);
+ iser_task->data[ISER_DIR_OUT].data_len, itt);
err = -EINVAL;
goto send_data_out_error;
}
@@ -468,10 +468,11 @@ send_data_out_error:
}
int iser_send_control(struct iscsi_conn *conn,
- struct iscsi_mgmt_task *mtask)
+ struct iscsi_task *task)
{
struct iscsi_iser_conn *iser_conn = conn->dd_data;
- struct iser_desc *mdesc = mtask->dd_data;
+ struct iscsi_iser_task *iser_task = task->dd_data;
+ struct iser_desc *mdesc = &iser_task->desc;
struct iser_dto *send_dto = NULL;
unsigned long data_seg_len;
int err = 0;
@@ -483,27 +484,27 @@ int iser_send_control(struct iscsi_conn *conn,
return -EPERM;
}
- if (iser_check_xmit(conn,mtask))
+ if (iser_check_xmit(conn, task))
return -ENOBUFS;
/* build the tx desc regd header and add it to the tx desc dto */
mdesc->type = ISCSI_TX_CONTROL;
send_dto = &mdesc->dto;
- send_dto->ctask = NULL;
+ send_dto->task = NULL;
iser_create_send_desc(iser_conn, mdesc);
device = iser_conn->ib_conn->device;
iser_reg_single(device, send_dto->regd[0], DMA_TO_DEVICE);
- data_seg_len = ntoh24(mtask->hdr->dlength);
+ data_seg_len = ntoh24(task->hdr->dlength);
if (data_seg_len > 0) {
regd_buf = &mdesc->data_regd_buf;
memset(regd_buf, 0, sizeof(struct iser_regd_buf));
regd_buf->device = device;
- regd_buf->virt_addr = mtask->data;
- regd_buf->data_size = mtask->data_count;
+ regd_buf->virt_addr = task->data;
+ regd_buf->data_size = task->data_count;
iser_reg_single(device, regd_buf,
DMA_TO_DEVICE);
iser_dto_add_regd_buff(send_dto, regd_buf,
@@ -533,15 +534,13 @@ send_control_error:
void iser_rcv_completion(struct iser_desc *rx_desc,
unsigned long dto_xfer_len)
{
- struct iser_dto *dto = &rx_desc->dto;
+ struct iser_dto *dto = &rx_desc->dto;
struct iscsi_iser_conn *conn = dto->ib_conn->iser_conn;
- struct iscsi_session *session = conn->iscsi_conn->session;
- struct iscsi_cmd_task *ctask;
- struct iscsi_iser_cmd_task *iser_ctask;
+ struct iscsi_task *task;
+ struct iscsi_iser_task *iser_task;
struct iscsi_hdr *hdr;
char *rx_data = NULL;
int rx_data_len = 0;
- unsigned int itt;
unsigned char opcode;
hdr = &rx_desc->iscsi_header;
@@ -557,19 +556,24 @@ void iser_rcv_completion(struct iser_desc *rx_desc,
opcode = hdr->opcode & ISCSI_OPCODE_MASK;
if (opcode == ISCSI_OP_SCSI_CMD_RSP) {
- itt = get_itt(hdr->itt); /* mask out cid and age bits */
- if (!(itt < session->cmds_max))
+ spin_lock(&conn->iscsi_conn->session->lock);
+ task = iscsi_itt_to_ctask(conn->iscsi_conn, hdr->itt);
+ if (task)
+ __iscsi_get_task(task);
+ spin_unlock(&conn->iscsi_conn->session->lock);
+
+ if (!task)
iser_err("itt can't be matched to task!!! "
- "conn %p opcode %d cmds_max %d itt %d\n",
- conn->iscsi_conn,opcode,session->cmds_max,itt);
- /* use the mapping given with the cmds array indexed by itt */
- ctask = (struct iscsi_cmd_task *)session->cmds[itt];
- iser_ctask = ctask->dd_data;
- iser_dbg("itt %d ctask %p\n",itt,ctask);
- iser_ctask->status = ISER_TASK_STATUS_COMPLETED;
- iser_ctask_rdma_finalize(iser_ctask);
+ "conn %p opcode %d itt %d\n",
+ conn->iscsi_conn, opcode, hdr->itt);
+ else {
+ iser_task = task->dd_data;
+ iser_dbg("itt %d task %p\n",hdr->itt, task);
+ iser_task->status = ISER_TASK_STATUS_COMPLETED;
+ iser_task_rdma_finalize(iser_task);
+ iscsi_put_task(task);
+ }
}
-
iser_dto_buffs_release(dto);
iscsi_iser_recv(conn->iscsi_conn, hdr, rx_data, rx_data_len);
@@ -590,7 +594,7 @@ void iser_snd_completion(struct iser_desc *tx_desc)
struct iser_conn *ib_conn = dto->ib_conn;
struct iscsi_iser_conn *iser_conn = ib_conn->iser_conn;
struct iscsi_conn *conn = iser_conn->iscsi_conn;
- struct iscsi_mgmt_task *mtask;
+ struct iscsi_task *task;
int resume_tx = 0;
iser_dbg("Initiator, Data sent dto=0x%p\n", dto);
@@ -613,36 +617,31 @@ void iser_snd_completion(struct iser_desc *tx_desc)
if (tx_desc->type == ISCSI_TX_CONTROL) {
/* this arithmetic is legal by libiscsi dd_data allocation */
- mtask = (void *) ((long)(void *)tx_desc -
- sizeof(struct iscsi_mgmt_task));
- if (mtask->hdr->itt == RESERVED_ITT) {
- struct iscsi_session *session = conn->session;
-
- spin_lock(&conn->session->lock);
- iscsi_free_mgmt_task(conn, mtask);
- spin_unlock(&session->lock);
- }
+ task = (void *) ((long)(void *)tx_desc -
+ sizeof(struct iscsi_task));
+ if (task->hdr->itt == RESERVED_ITT)
+ iscsi_put_task(task);
}
}
-void iser_ctask_rdma_init(struct iscsi_iser_cmd_task *iser_ctask)
+void iser_task_rdma_init(struct iscsi_iser_task *iser_task)
{
- iser_ctask->status = ISER_TASK_STATUS_INIT;
+ iser_task->status = ISER_TASK_STATUS_INIT;
- iser_ctask->dir[ISER_DIR_IN] = 0;
- iser_ctask->dir[ISER_DIR_OUT] = 0;
+ iser_task->dir[ISER_DIR_IN] = 0;
+ iser_task->dir[ISER_DIR_OUT] = 0;
- iser_ctask->data[ISER_DIR_IN].data_len = 0;
- iser_ctask->data[ISER_DIR_OUT].data_len = 0;
+ iser_task->data[ISER_DIR_IN].data_len = 0;
+ iser_task->data[ISER_DIR_OUT].data_len = 0;
- memset(&iser_ctask->rdma_regd[ISER_DIR_IN], 0,
+ memset(&iser_task->rdma_regd[ISER_DIR_IN], 0,
sizeof(struct iser_regd_buf));
- memset(&iser_ctask->rdma_regd[ISER_DIR_OUT], 0,
+ memset(&iser_task->rdma_regd[ISER_DIR_OUT], 0,
sizeof(struct iser_regd_buf));
}
-void iser_ctask_rdma_finalize(struct iscsi_iser_cmd_task *iser_ctask)
+void iser_task_rdma_finalize(struct iscsi_iser_task *iser_task)
{
int deferred;
int is_rdma_aligned = 1;
@@ -651,17 +650,17 @@ void iser_ctask_rdma_finalize(struct iscsi_iser_cmd_task *iser_ctask)
/* if we were reading, copy back to unaligned sglist,
* anyway dma_unmap and free the copy
*/
- if (iser_ctask->data_copy[ISER_DIR_IN].copy_buf != NULL) {
+ if (iser_task->data_copy[ISER_DIR_IN].copy_buf != NULL) {
is_rdma_aligned = 0;
- iser_finalize_rdma_unaligned_sg(iser_ctask, ISER_DIR_IN);
+ iser_finalize_rdma_unaligned_sg(iser_task, ISER_DIR_IN);
}
- if (iser_ctask->data_copy[ISER_DIR_OUT].copy_buf != NULL) {
+ if (iser_task->data_copy[ISER_DIR_OUT].copy_buf != NULL) {
is_rdma_aligned = 0;
- iser_finalize_rdma_unaligned_sg(iser_ctask, ISER_DIR_OUT);
+ iser_finalize_rdma_unaligned_sg(iser_task, ISER_DIR_OUT);
}
- if (iser_ctask->dir[ISER_DIR_IN]) {
- regd = &iser_ctask->rdma_regd[ISER_DIR_IN];
+ if (iser_task->dir[ISER_DIR_IN]) {
+ regd = &iser_task->rdma_regd[ISER_DIR_IN];
deferred = iser_regd_buff_release(regd);
if (deferred) {
iser_err("%d references remain for BUF-IN rdma reg\n",
@@ -669,8 +668,8 @@ void iser_ctask_rdma_finalize(struct iscsi_iser_cmd_task *iser_ctask)
}
}
- if (iser_ctask->dir[ISER_DIR_OUT]) {
- regd = &iser_ctask->rdma_regd[ISER_DIR_OUT];
+ if (iser_task->dir[ISER_DIR_OUT]) {
+ regd = &iser_task->rdma_regd[ISER_DIR_OUT];
deferred = iser_regd_buff_release(regd);
if (deferred) {
iser_err("%d references remain for BUF-OUT rdma reg\n",
@@ -680,7 +679,7 @@ void iser_ctask_rdma_finalize(struct iscsi_iser_cmd_task *iser_ctask)
/* if the data was unaligned, it was already unmapped and then copied */
if (is_rdma_aligned)
- iser_dma_unmap_task_data(iser_ctask);
+ iser_dma_unmap_task_data(iser_task);
}
void iser_dto_buffs_release(struct iser_dto *dto)
diff --git a/drivers/infiniband/ulp/iser/iser_memory.c b/drivers/infiniband/ulp/iser/iser_memory.c
index 81e49cb10ed..b9453d068e9 100644
--- a/drivers/infiniband/ulp/iser/iser_memory.c
+++ b/drivers/infiniband/ulp/iser/iser_memory.c
@@ -99,13 +99,13 @@ void iser_reg_single(struct iser_device *device,
/**
* iser_start_rdma_unaligned_sg
*/
-static int iser_start_rdma_unaligned_sg(struct iscsi_iser_cmd_task *iser_ctask,
+static int iser_start_rdma_unaligned_sg(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir)
{
int dma_nents;
struct ib_device *dev;
char *mem = NULL;
- struct iser_data_buf *data = &iser_ctask->data[cmd_dir];
+ struct iser_data_buf *data = &iser_task->data[cmd_dir];
unsigned long cmd_data_len = data->data_len;
if (cmd_data_len > ISER_KMALLOC_THRESHOLD)
@@ -138,37 +138,37 @@ static int iser_start_rdma_unaligned_sg(struct iscsi_iser_cmd_task *iser_ctask,
}
}
- sg_init_one(&iser_ctask->data_copy[cmd_dir].sg_single, mem, cmd_data_len);
- iser_ctask->data_copy[cmd_dir].buf =
- &iser_ctask->data_copy[cmd_dir].sg_single;
- iser_ctask->data_copy[cmd_dir].size = 1;
+ sg_init_one(&iser_task->data_copy[cmd_dir].sg_single, mem, cmd_data_len);
+ iser_task->data_copy[cmd_dir].buf =
+ &iser_task->data_copy[cmd_dir].sg_single;
+ iser_task->data_copy[cmd_dir].size = 1;
- iser_ctask->data_copy[cmd_dir].copy_buf = mem;
+ iser_task->data_copy[cmd_dir].copy_buf = mem;
- dev = iser_ctask->iser_conn->ib_conn->device->ib_device;
+ dev = iser_task->iser_conn->ib_conn->device->ib_device;
dma_nents = ib_dma_map_sg(dev,
- &iser_ctask->data_copy[cmd_dir].sg_single,
+ &iser_task->data_copy[cmd_dir].sg_single,
1,
(cmd_dir == ISER_DIR_OUT) ?
DMA_TO_DEVICE : DMA_FROM_DEVICE);
BUG_ON(dma_nents == 0);
- iser_ctask->data_copy[cmd_dir].dma_nents = dma_nents;
+ iser_task->data_copy[cmd_dir].dma_nents = dma_nents;
return 0;
}
/**
* iser_finalize_rdma_unaligned_sg
*/
-void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_cmd_task *iser_ctask,
+void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir)
{
struct ib_device *dev;
struct iser_data_buf *mem_copy;
unsigned long cmd_data_len;
- dev = iser_ctask->iser_conn->ib_conn->device->ib_device;
- mem_copy = &iser_ctask->data_copy[cmd_dir];
+ dev = iser_task->iser_conn->ib_conn->device->ib_device;
+ mem_copy = &iser_task->data_copy[cmd_dir];
ib_dma_unmap_sg(dev, &mem_copy->sg_single, 1,
(cmd_dir == ISER_DIR_OUT) ?
@@ -184,8 +184,8 @@ void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_cmd_task *iser_ctask,
/* copy back read RDMA to unaligned sg */
mem = mem_copy->copy_buf;
- sgl = (struct scatterlist *)iser_ctask->data[ISER_DIR_IN].buf;
- sg_size = iser_ctask->data[ISER_DIR_IN].size;
+ sgl = (struct scatterlist *)iser_task->data[ISER_DIR_IN].buf;
+ sg_size = iser_task->data[ISER_DIR_IN].size;
p = mem;
for_each_sg(sgl, sg, sg_size, i) {
@@ -198,7 +198,7 @@ void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_cmd_task *iser_ctask,
}
}
- cmd_data_len = iser_ctask->data[cmd_dir].data_len;
+ cmd_data_len = iser_task->data[cmd_dir].data_len;
if (cmd_data_len > ISER_KMALLOC_THRESHOLD)
free_pages((unsigned long)mem_copy->copy_buf,
@@ -376,15 +376,15 @@ static void iser_page_vec_build(struct iser_data_buf *data,
}
}
-int iser_dma_map_task_data(struct iscsi_iser_cmd_task *iser_ctask,
- struct iser_data_buf *data,
- enum iser_data_dir iser_dir,
- enum dma_data_direction dma_dir)
+int iser_dma_map_task_data(struct iscsi_iser_task *iser_task,
+ struct iser_data_buf *data,
+ enum iser_data_dir iser_dir,
+ enum dma_data_direction dma_dir)
{
struct ib_device *dev;
- iser_ctask->dir[iser_dir] = 1;
- dev = iser_ctask->iser_conn->ib_conn->device->ib_device;
+ iser_task->dir[iser_dir] = 1;
+ dev = iser_task->iser_conn->ib_conn->device->ib_device;
data->dma_nents = ib_dma_map_sg(dev, data->buf, data->size, dma_dir);
if (data->dma_nents == 0) {
@@ -394,20 +394,20 @@ int iser_dma_map_task_data(struct iscsi_iser_cmd_task *iser_ctask,
return 0;
}
-void iser_dma_unmap_task_data(struct iscsi_iser_cmd_task *iser_ctask)
+void iser_dma_unmap_task_data(struct iscsi_iser_task *iser_task)
{
struct ib_device *dev;
struct iser_data_buf *data;
- dev = iser_ctask->iser_conn->ib_conn->device->ib_device;
+ dev = iser_task->iser_conn->ib_conn->device->ib_device;
- if (iser_ctask->dir[ISER_DIR_IN]) {
- data = &iser_ctask->data[ISER_DIR_IN];
+ if (iser_task->dir[ISER_DIR_IN]) {
+ data = &iser_task->data[ISER_DIR_IN];
ib_dma_unmap_sg(dev, data->buf, data->size, DMA_FROM_DEVICE);
}
- if (iser_ctask->dir[ISER_DIR_OUT]) {
- data = &iser_ctask->data[ISER_DIR_OUT];
+ if (iser_task->dir[ISER_DIR_OUT]) {
+ data = &iser_task->data[ISER_DIR_OUT];
ib_dma_unmap_sg(dev, data->buf, data->size, DMA_TO_DEVICE);
}
}
@@ -418,21 +418,21 @@ void iser_dma_unmap_task_data(struct iscsi_iser_cmd_task *iser_ctask)
*
* returns 0 on success, errno code on failure
*/
-int iser_reg_rdma_mem(struct iscsi_iser_cmd_task *iser_ctask,
+int iser_reg_rdma_mem(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir)
{
- struct iscsi_conn *iscsi_conn = iser_ctask->iser_conn->iscsi_conn;
- struct iser_conn *ib_conn = iser_ctask->iser_conn->ib_conn;
+ struct iscsi_conn *iscsi_conn = iser_task->iser_conn->iscsi_conn;
+ struct iser_conn *ib_conn = iser_task->iser_conn->ib_conn;
struct iser_device *device = ib_conn->device;
struct ib_device *ibdev = device->ib_device;
- struct iser_data_buf *mem = &iser_ctask->data[cmd_dir];
+ struct iser_data_buf *mem = &iser_task->data[cmd_dir];
struct iser_regd_buf *regd_buf;
int aligned_len;
int err;
int i;
struct scatterlist *sg;
- regd_buf = &iser_ctask->rdma_regd[cmd_dir];
+ regd_buf = &iser_task->rdma_regd[cmd_dir];
aligned_len = iser_data_buf_aligned_len(mem, ibdev);
if (aligned_len != mem->dma_nents) {
@@ -442,13 +442,13 @@ int iser_reg_rdma_mem(struct iscsi_iser_cmd_task *iser_ctask,
iser_data_buf_dump(mem, ibdev);
/* unmap the command data before accessing it */
- iser_dma_unmap_task_data(iser_ctask);
+ iser_dma_unmap_task_data(iser_task);
/* allocate copy buf, if we are writing, copy the */
/* unaligned scatterlist, dma map the copy */
- if (iser_start_rdma_unaligned_sg(iser_ctask, cmd_dir) != 0)
+ if (iser_start_rdma_unaligned_sg(iser_task, cmd_dir) != 0)
return -ENOMEM;
- mem = &iser_ctask->data_copy[cmd_dir];
+ mem = &iser_task->data_copy[cmd_dir];
}
/* if there a single dma entry, FMR is not needed */
@@ -472,8 +472,9 @@ int iser_reg_rdma_mem(struct iscsi_iser_cmd_task *iser_ctask,
err = iser_reg_page_vec(ib_conn, ib_conn->page_vec, &regd_buf->reg);
if (err) {
iser_data_buf_dump(mem, ibdev);
- iser_err("mem->dma_nents = %d (dlength = 0x%x)\n", mem->dma_nents,
- ntoh24(iser_ctask->desc.iscsi_header.dlength));
+ iser_err("mem->dma_nents = %d (dlength = 0x%x)\n",
+ mem->dma_nents,
+ ntoh24(iser_task->desc.iscsi_header.dlength));
iser_err("page_vec: data_size = 0x%x, length = %d, offset = 0x%x\n",
ib_conn->page_vec->data_size, ib_conn->page_vec->length,
ib_conn->page_vec->offset);
diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c
index 77cabee7cc0..3a917c1f796 100644
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -323,7 +323,18 @@ static void iser_conn_release(struct iser_conn *ib_conn)
iser_device_try_release(device);
if (ib_conn->iser_conn)
ib_conn->iser_conn->ib_conn = NULL;
- kfree(ib_conn);
+ iscsi_destroy_endpoint(ib_conn->ep);
+}
+
+void iser_conn_get(struct iser_conn *ib_conn)
+{
+ atomic_inc(&ib_conn->refcount);
+}
+
+void iser_conn_put(struct iser_conn *ib_conn)
+{
+ if (atomic_dec_and_test(&ib_conn->refcount))
+ iser_conn_release(ib_conn);
}
/**
@@ -347,7 +358,7 @@ void iser_conn_terminate(struct iser_conn *ib_conn)
wait_event_interruptible(ib_conn->wait,
ib_conn->state == ISER_CONN_DOWN);
- iser_conn_release(ib_conn);
+ iser_conn_put(ib_conn);
}
static void iser_connect_error(struct rdma_cm_id *cma_id)
@@ -481,24 +492,15 @@ static int iser_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *eve
return ret;
}
-int iser_conn_init(struct iser_conn **ibconn)
+void iser_conn_init(struct iser_conn *ib_conn)
{
- struct iser_conn *ib_conn;
-
- ib_conn = kzalloc(sizeof *ib_conn, GFP_KERNEL);
- if (!ib_conn) {
- iser_err("can't alloc memory for struct iser_conn\n");
- return -ENOMEM;
- }
ib_conn->state = ISER_CONN_INIT;
init_waitqueue_head(&ib_conn->wait);
atomic_set(&ib_conn->post_recv_buf_count, 0);
atomic_set(&ib_conn->post_send_buf_count, 0);
+ atomic_set(&ib_conn->refcount, 1);
INIT_LIST_HEAD(&ib_conn->conn_list);
spin_lock_init(&ib_conn->lock);
-
- *ibconn = ib_conn;
- return 0;
}
/**
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
index 610af916891..07d92c11b5d 100644
--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig
@@ -252,27 +252,14 @@ config DM_ZERO
config DM_MULTIPATH
tristate "Multipath target"
depends on BLK_DEV_DM
+ # nasty syntax but means make DM_MULTIPATH independent
+ # of SCSI_DH if the latter isn't defined but if
+ # it is, DM_MULTIPATH must depend on it. We get a build
+ # error if SCSI_DH=m and DM_MULTIPATH=y
+ depends on SCSI_DH || !SCSI_DH
---help---
Allow volume managers to support multipath hardware.
-config DM_MULTIPATH_EMC
- tristate "EMC CX/AX multipath support"
- depends on DM_MULTIPATH && BLK_DEV_DM
- ---help---
- Multipath support for EMC CX/AX series hardware.
-
-config DM_MULTIPATH_RDAC
- tristate "LSI/Engenio RDAC multipath support (EXPERIMENTAL)"
- depends on DM_MULTIPATH && BLK_DEV_DM && SCSI && EXPERIMENTAL
- ---help---
- Multipath support for LSI/Engenio RDAC.
-
-config DM_MULTIPATH_HP
- tristate "HP MSA multipath support (EXPERIMENTAL)"
- depends on DM_MULTIPATH && BLK_DEV_DM && SCSI && EXPERIMENTAL
- ---help---
- Multipath support for HP MSA (Active/Passive) series hardware.
-
config DM_DELAY
tristate "I/O delaying target (EXPERIMENTAL)"
depends on BLK_DEV_DM && EXPERIMENTAL
diff --git a/drivers/md/Makefile b/drivers/md/Makefile
index 7be09eeea29..f1ef33dfd8c 100644
--- a/drivers/md/Makefile
+++ b/drivers/md/Makefile
@@ -4,11 +4,9 @@
dm-mod-objs := dm.o dm-table.o dm-target.o dm-linear.o dm-stripe.o \
dm-ioctl.o dm-io.o dm-kcopyd.o
-dm-multipath-objs := dm-hw-handler.o dm-path-selector.o dm-mpath.o
+dm-multipath-objs := dm-path-selector.o dm-mpath.o
dm-snapshot-objs := dm-snap.o dm-exception-store.o
dm-mirror-objs := dm-raid1.o
-dm-rdac-objs := dm-mpath-rdac.o
-dm-hp-sw-objs := dm-mpath-hp-sw.o
md-mod-objs := md.o bitmap.o
raid456-objs := raid5.o raid6algos.o raid6recov.o raid6tables.o \
raid6int1.o raid6int2.o raid6int4.o \
@@ -35,9 +33,6 @@ obj-$(CONFIG_BLK_DEV_DM) += dm-mod.o
obj-$(CONFIG_DM_CRYPT) += dm-crypt.o
obj-$(CONFIG_DM_DELAY) += dm-delay.o
obj-$(CONFIG_DM_MULTIPATH) += dm-multipath.o dm-round-robin.o
-obj-$(CONFIG_DM_MULTIPATH_EMC) += dm-emc.o
-obj-$(CONFIG_DM_MULTIPATH_HP) += dm-hp-sw.o
-obj-$(CONFIG_DM_MULTIPATH_RDAC) += dm-rdac.o
obj-$(CONFIG_DM_SNAPSHOT) += dm-snapshot.o
obj-$(CONFIG_DM_MIRROR) += dm-mirror.o dm-log.o
obj-$(CONFIG_DM_ZERO) += dm-zero.o
diff --git a/drivers/md/dm-emc.c b/drivers/md/dm-emc.c
deleted file mode 100644
index 3ea5ad4b780..00000000000
--- a/drivers/md/dm-emc.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/*
- * Copyright (C) 2004 SUSE LINUX Products GmbH. All rights reserved.
- * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
- *
- * This file is released under the GPL.
- *
- * Multipath support for EMC CLARiiON AX/CX-series hardware.
- */
-
-#include "dm.h"
-#include "dm-hw-handler.h"
-#include <scsi/scsi.h>
-#include <scsi/scsi_cmnd.h>
-
-#define DM_MSG_PREFIX "multipath emc"
-
-struct emc_handler {
- spinlock_t lock;
-
- /* Whether we should send the short trespass command (FC-series)
- * or the long version (default for AX/CX CLARiiON arrays). */
- unsigned short_trespass;
- /* Whether or not to honor SCSI reservations when initiating a
- * switch-over. Default: Don't. */
- unsigned hr;
-
- unsigned char sense[SCSI_SENSE_BUFFERSIZE];
-};
-
-#define TRESPASS_PAGE 0x22
-#define EMC_FAILOVER_TIMEOUT (60 * HZ)
-
-/* Code borrowed from dm-lsi-rdac by Mike Christie */
-
-static inline void free_bio(struct bio *bio)
-{
- __free_page(bio->bi_io_vec[0].bv_page);
- bio_put(bio);
-}
-
-static void emc_endio(struct bio *bio, int error)
-{
- struct dm_path *path = bio->bi_private;
-
- /* We also need to look at the sense keys here whether or not to
- * switch to the next PG etc.
- *
- * For now simple logic: either it works or it doesn't.
- */
- if (error)
- dm_pg_init_complete(path, MP_FAIL_PATH);
- else
- dm_pg_init_complete(path, 0);
-
- /* request is freed in block layer */
- free_bio(bio);
-}
-
-static struct bio *get_failover_bio(struct dm_path *path, unsigned data_size)
-{
- struct bio *bio;
- struct page *page;
-
- bio = bio_alloc(GFP_ATOMIC, 1);
- if (!bio) {
- DMERR("get_failover_bio: bio_alloc() failed.");
- return NULL;
- }
-
- bio->bi_rw |= (1 << BIO_RW);
- bio->bi_bdev = path->dev->bdev;
- bio->bi_sector = 0;
- bio->bi_private = path;
- bio->bi_end_io = emc_endio;
-
- page = alloc_page(GFP_ATOMIC);
- if (!page) {
- DMERR("get_failover_bio: alloc_page() failed.");
- bio_put(bio);
- return NULL;
- }
-
- if (bio_add_page(bio, page, data_size, 0) != data_size) {
- DMERR("get_failover_bio: bio_add_page() failed.");
- __free_page(page);
- bio_put(bio);
- return NULL;
- }
-
- return bio;
-}
-
-static struct request *get_failover_req(struct emc_handler *h,
- struct bio *bio, struct dm_path *path)
-{
- struct request *rq;
- struct block_device *bdev = bio->bi_bdev;
- struct request_queue *q = bdev_get_queue(bdev);
-
- /* FIXME: Figure out why it fails with GFP_ATOMIC. */
- rq = blk_get_request(q, WRITE, __GFP_WAIT);
- if (!rq) {
- DMERR("get_failover_req: blk_get_request failed");
- return NULL;
- }
-
- blk_rq_append_bio(q, rq, bio);
-
- rq->sense = h->sense;
- memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE);
- rq->sense_len = 0;
-
- rq->timeout = EMC_FAILOVER_TIMEOUT;
- rq->cmd_type = REQ_TYPE_BLOCK_PC;
- rq->cmd_flags |= REQ_FAILFAST | REQ_NOMERGE;
-
- return rq;
-}
-
-static struct request *emc_trespass_get(struct emc_handler *h,
- struct dm_path *path)
-{
- struct bio *bio;
- struct request *rq;
- unsigned char *page22;
- unsigned char long_trespass_pg[] = {
- 0, 0, 0, 0,
- TRESPASS_PAGE, /* Page code */
- 0x09, /* Page length - 2 */
- h->hr ? 0x01 : 0x81, /* Trespass code + Honor reservation bit */
- 0xff, 0xff, /* Trespass target */
- 0, 0, 0, 0, 0, 0 /* Reserved bytes / unknown */
- };
- unsigned char short_trespass_pg[] = {
- 0, 0, 0, 0,
- TRESPASS_PAGE, /* Page code */
- 0x02, /* Page length - 2 */
- h->hr ? 0x01 : 0x81, /* Trespass code + Honor reservation bit */
- 0xff, /* Trespass target */
- };
- unsigned data_size = h->short_trespass ? sizeof(short_trespass_pg) :
- sizeof(long_trespass_pg);
-
- /* get bio backing */
- if (data_size > PAGE_SIZE)
- /* this should never happen */
- return NULL;
-
- bio = get_failover_bio(path, data_size);
- if (!bio) {
- DMERR("emc_trespass_get: no bio");
- return NULL;
- }
-
- page22 = (unsigned char *)bio_data(bio);
- memset(page22, 0, data_size);
-
- memcpy(page22, h->short_trespass ?
- short_trespass_pg : long_trespass_pg, data_size);
-
- /* get request for block layer packet command */
- rq = get_failover_req(h, bio, path);
- if (!rq) {
- DMERR("emc_trespass_get: no rq");
- free_bio(bio);
- return NULL;
- }
-
- /* Prepare the command. */
- rq->cmd[0] = MODE_SELECT;
- rq->cmd[1] = 0x10;
- rq->cmd[4] = data_size;
- rq->cmd_len = COMMAND_SIZE(rq->cmd[0]);
-
- return rq;
-}
-
-static void emc_pg_init(struct hw_handler *hwh, unsigned bypassed,
- struct dm_path *path)
-{
- struct request *rq;
- struct request_queue *q = bdev_get_queue(path->dev->bdev);
-
- /*
- * We can either blindly init the pg (then look at the sense),
- * or we can send some commands to get the state here (then
- * possibly send the fo cmnd), or we can also have the
- * initial state passed into us and then get an update here.
- */
- if (!q) {
- DMINFO("emc_pg_init: no queue");
- goto fail_path;
- }
-
- /* FIXME: The request should be pre-allocated. */
- rq = emc_trespass_get(hwh->context, path);
- if (!rq) {
- DMERR("emc_pg_init: no rq");
- goto fail_path;
- }
-
- DMINFO("emc_pg_init: sending switch-over command");
- elv_add_request(q, rq, ELEVATOR_INSERT_FRONT, 1);
- return;
-
-fail_path:
- dm_pg_init_complete(path, MP_FAIL_PATH);
-}
-
-static struct emc_handler *alloc_emc_handler(void)
-{
- struct emc_handler *h = kzalloc(sizeof(*h), GFP_KERNEL);
-
- if (h)
- spin_lock_init(&h->lock);
-
- return h;
-}
-
-static int emc_create(struct hw_handler *hwh, unsigned argc, char **argv)
-{
- struct emc_handler *h;
- unsigned hr, short_trespass;
-
- if (argc == 0) {
- /* No arguments: use defaults */
- hr = 0;
- short_trespass = 0;
- } else if (argc != 2) {
- DMWARN("incorrect number of arguments");
- return -EINVAL;
- } else {
- if ((sscanf(argv[0], "%u", &short_trespass) != 1)
- || (short_trespass > 1)) {
- DMWARN("invalid trespass mode selected");
- return -EINVAL;
- }
-
- if ((sscanf(argv[1], "%u", &hr) != 1)
- || (hr > 1)) {
- DMWARN("invalid honor reservation flag selected");
- return -EINVAL;
- }
- }
-
- h = alloc_emc_handler();
- if (!h)
- return -ENOMEM;
-
- hwh->context = h;
-
- if ((h->short_trespass = short_trespass))
- DMWARN("short trespass command will be send");
- else
- DMWARN("long trespass command will be send");
-
- if ((h->hr = hr))
- DMWARN("honor reservation bit will be set");
- else
- DMWARN("honor reservation bit will not be set (default)");
-
- return 0;
-}
-
-static void emc_destroy(struct hw_handler *hwh)
-{
- struct emc_handler *h = (struct emc_handler *) hwh->context;
-
- kfree(h);
- hwh->context = NULL;
-}
-
-static unsigned emc_error(struct hw_handler *hwh, struct bio *bio)
-{
- /* FIXME: Patch from axboe still missing */
-#if 0
- int sense;
-
- if (bio->bi_error & BIO_SENSE) {
- sense = bio->bi_error & 0xffffff; /* sense key / asc / ascq */
-
- if (sense == 0x020403) {
- /* LUN Not Ready - Manual Intervention Required
- * indicates this is a passive path.
- *
- * FIXME: However, if this is seen and EVPD C0
- * indicates that this is due to a NDU in
- * progress, we should set FAIL_PATH too.
- * This indicates we might have to do a SCSI
- * inquiry in the end_io path. Ugh. */
- return MP_BYPASS_PG | MP_RETRY_IO;
- } else if (sense == 0x052501) {
- /* An array based copy is in progress. Do not
- * fail the path, do not bypass to another PG,
- * do not retry. Fail the IO immediately.
- * (Actually this is the same conclusion as in
- * the default handler, but lets make sure.) */
- return 0;
- } else if (sense == 0x062900) {
- /* Unit Attention Code. This is the first IO
- * to the new path, so just retry. */
- return MP_RETRY_IO;
- }
- }
-#endif
-
- /* Try default handler */
- return dm_scsi_err_handler(hwh, bio);
-}
-
-static struct hw_handler_type emc_hwh = {
- .name = "emc",
- .module = THIS_MODULE,
- .create = emc_create,
- .destroy = emc_destroy,
- .pg_init = emc_pg_init,
- .error = emc_error,
-};
-
-static int __init dm_emc_init(void)
-{
- int r = dm_register_hw_handler(&emc_hwh);
-
- if (r < 0)
- DMERR("register failed %d", r);
-
- DMINFO("version 0.0.3 loaded");
-
- return r;
-}
-
-static void __exit dm_emc_exit(void)
-{
- int r = dm_unregister_hw_handler(&emc_hwh);
-
- if (r < 0)
- DMERR("unregister failed %d", r);
-}
-
-module_init(dm_emc_init);
-module_exit(dm_emc_exit);
-
-MODULE_DESCRIPTION(DM_NAME " EMC CX/AX/FC-family multipath");
-MODULE_AUTHOR("Lars Marowsky-Bree <lmb@suse.de>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/md/dm-hw-handler.c b/drivers/md/dm-hw-handler.c
deleted file mode 100644
index 2ee84d8aa0b..00000000000
--- a/drivers/md/dm-hw-handler.c
+++ /dev/null
@@ -1,213 +0,0 @@
-/*
- * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
- *
- * This file is released under the GPL.
- *
- * Multipath hardware handler registration.
- */
-
-#include "dm.h"
-#include "dm-hw-handler.h"
-
-#include <linux/slab.h>
-
-struct hwh_internal {
- struct hw_handler_type hwht;
-
- struct list_head list;
- long use;
-};
-
-#define hwht_to_hwhi(__hwht) container_of((__hwht), struct hwh_internal, hwht)
-
-static LIST_HEAD(_hw_handlers);
-static DECLARE_RWSEM(_hwh_lock);
-
-static struct hwh_internal *__find_hw_handler_type(const char *name)
-{
- struct hwh_internal *hwhi;
-
- list_for_each_entry(hwhi, &_hw_handlers, list) {
- if (!strcmp(name, hwhi->hwht.name))
- return hwhi;
- }
-
- return NULL;
-}
-
-static struct hwh_internal *get_hw_handler(const char *name)
-{
- struct hwh_internal *hwhi;
-
- down_read(&_hwh_lock);
- hwhi = __find_hw_handler_type(name);
- if (hwhi) {
- if ((hwhi->use == 0) && !try_module_get(hwhi->hwht.module))
- hwhi = NULL;
- else
- hwhi->use++;
- }
- up_read(&_hwh_lock);
-
- return hwhi;
-}
-
-struct hw_handler_type *dm_get_hw_handler(const char *name)
-{
- struct hwh_internal *hwhi;
-
- if (!name)
- return NULL;
-
- hwhi = get_hw_handler(name);
- if (!hwhi) {
- request_module("dm-%s", name);
- hwhi = get_hw_handler(name);
- }
-
- return hwhi ? &hwhi->hwht : NULL;
-}
-
-void dm_put_hw_handler(struct hw_handler_type *hwht)
-{
- struct hwh_internal *hwhi;
-
- if (!hwht)
- return;
-
- down_read(&_hwh_lock);
- hwhi = __find_hw_handler_type(hwht->name);
- if (!hwhi)
- goto out;
-
- if (--hwhi->use == 0)
- module_put(hwhi->hwht.module);
-
- BUG_ON(hwhi->use < 0);
-
- out:
- up_read(&_hwh_lock);
-}
-
-static struct hwh_internal *_alloc_hw_handler(struct hw_handler_type *hwht)
-{
- struct hwh_internal *hwhi = kzalloc(sizeof(*hwhi), GFP_KERNEL);
-
- if (hwhi)
- hwhi->hwht = *hwht;
-
- return hwhi;
-}
-
-int dm_register_hw_handler(struct hw_handler_type *hwht)
-{
- int r = 0;
- struct hwh_internal *hwhi = _alloc_hw_handler(hwht);
-
- if (!hwhi)
- return -ENOMEM;
-
- down_write(&_hwh_lock);
-
- if (__find_hw_handler_type(hwht->name)) {
- kfree(hwhi);
- r = -EEXIST;
- } else
- list_add(&hwhi->list, &_hw_handlers);
-
- up_write(&_hwh_lock);
-
- return r;
-}
-
-int dm_unregister_hw_handler(struct hw_handler_type *hwht)
-{
- struct hwh_internal *hwhi;
-
- down_write(&_hwh_lock);
-
- hwhi = __find_hw_handler_type(hwht->name);
- if (!hwhi) {
- up_write(&_hwh_lock);
- return -EINVAL;
- }
-
- if (hwhi->use) {
- up_write(&_hwh_lock);
- return -ETXTBSY;
- }
-
- list_del(&hwhi->list);
-
- up_write(&_hwh_lock);
-
- kfree(hwhi);
-
- return 0;
-}
-
-unsigned dm_scsi_err_handler(struct hw_handler *hwh, struct bio *bio)
-{
-#if 0
- int sense_key, asc, ascq;
-
- if (bio->bi_error & BIO_SENSE) {
- /* FIXME: This is just an initial guess. */
- /* key / asc / ascq */
- sense_key = (bio->bi_error >> 16) & 0xff;
- asc = (bio->bi_error >> 8) & 0xff;
- ascq = bio->bi_error & 0xff;
-
- switch (sense_key) {
- /* This block as a whole comes from the device.
- * So no point retrying on another path. */
- case 0x03: /* Medium error */
- case 0x05: /* Illegal request */
- case 0x07: /* Data protect */
- case 0x08: /* Blank check */
- case 0x0a: /* copy aborted */
- case 0x0c: /* obsolete - no clue ;-) */
- case 0x0d: /* volume overflow */
- case 0x0e: /* data miscompare */
- case 0x0f: /* reserved - no idea either. */
- return MP_ERROR_IO;
-
- /* For these errors it's unclear whether they
- * come from the device or the controller.
- * So just lets try a different path, and if
- * it eventually succeeds, user-space will clear
- * the paths again... */
- case 0x02: /* Not ready */
- case 0x04: /* Hardware error */
- case 0x09: /* vendor specific */
- case 0x0b: /* Aborted command */
- return MP_FAIL_PATH;
-
- case 0x06: /* Unit attention - might want to decode */
- if (asc == 0x04 && ascq == 0x01)
- /* "Unit in the process of
- * becoming ready" */
- return 0;
- return MP_FAIL_PATH;
-
- /* FIXME: For Unit Not Ready we may want
- * to have a generic pg activation
- * feature (START_UNIT). */
-
- /* Should these two ever end up in the
- * error path? I don't think so. */
- case 0x00: /* No sense */
- case 0x01: /* Recovered error */
- return 0;
- }
- }
-#endif
-
- /* We got no idea how to decode the other kinds of errors ->
- * assume generic error condition. */
- return MP_FAIL_PATH;
-}
-
-EXPORT_SYMBOL_GPL(dm_register_hw_handler);
-EXPORT_SYMBOL_GPL(dm_unregister_hw_handler);
-EXPORT_SYMBOL_GPL(dm_scsi_err_handler);
diff --git a/drivers/md/dm-hw-handler.h b/drivers/md/dm-hw-handler.h
deleted file mode 100644
index 46809dcb121..00000000000
--- a/drivers/md/dm-hw-handler.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
- *
- * This file is released under the GPL.
- *
- * Multipath hardware handler registration.
- */
-
-#ifndef DM_HW_HANDLER_H
-#define DM_HW_HANDLER_H
-
-#include <linux/device-mapper.h>
-
-#include "dm-mpath.h"
-
-struct hw_handler_type;
-struct hw_handler {
- struct hw_handler_type *type;
- struct mapped_device *md;
- void *context;
-};
-
-/*
- * Constructs a hardware handler object, takes custom arguments
- */
-/* Information about a hardware handler type */
-struct hw_handler_type {
- char *name;
- struct module *module;
-
- int (*create) (struct hw_handler *handler, unsigned int argc,
- char **argv);
- void (*destroy) (struct hw_handler *hwh);
-
- void (*pg_init) (struct hw_handler *hwh, unsigned bypassed,
- struct dm_path *path);
- unsigned (*error) (struct hw_handler *hwh, struct bio *bio);
- int (*status) (struct hw_handler *hwh, status_type_t type,
- char *result, unsigned int maxlen);
-};
-
-/* Register a hardware handler */
-int dm_register_hw_handler(struct hw_handler_type *type);
-
-/* Unregister a hardware handler */
-int dm_unregister_hw_handler(struct hw_handler_type *type);
-
-/* Returns a registered hardware handler type */
-struct hw_handler_type *dm_get_hw_handler(const char *name);
-
-/* Releases a hardware handler */
-void dm_put_hw_handler(struct hw_handler_type *hwht);
-
-/* Default err function */
-unsigned dm_scsi_err_handler(struct hw_handler *hwh, struct bio *bio);
-
-/* Error flags for err and dm_pg_init_complete */
-#define MP_FAIL_PATH 1
-#define MP_BYPASS_PG 2
-#define MP_ERROR_IO 4 /* Don't retry this I/O */
-#define MP_RETRY 8
-
-#endif
diff --git a/drivers/md/dm-mpath-hp-sw.c b/drivers/md/dm-mpath-hp-sw.c
deleted file mode 100644
index b63a0ab37c5..00000000000
--- a/drivers/md/dm-mpath-hp-sw.c
+++ /dev/null
@@ -1,247 +0,0 @@
-/*
- * Copyright (C) 2005 Mike Christie, All rights reserved.
- * Copyright (C) 2007 Red Hat, Inc. All rights reserved.
- * Authors: Mike Christie
- * Dave Wysochanski
- *
- * This file is released under the GPL.
- *
- * This module implements the specific path activation code for
- * HP StorageWorks and FSC FibreCat Asymmetric (Active/Passive)
- * storage arrays.
- * These storage arrays have controller-based failover, not
- * LUN-based failover. However, LUN-based failover is the design
- * of dm-multipath. Thus, this module is written for LUN-based failover.
- */
-#include <linux/blkdev.h>
-#include <linux/list.h>
-#include <linux/types.h>
-#include <scsi/scsi.h>
-#include <scsi/scsi_cmnd.h>
-#include <scsi/scsi_dbg.h>
-
-#include "dm.h"
-#include "dm-hw-handler.h"
-
-#define DM_MSG_PREFIX "multipath hp-sw"
-#define DM_HP_HWH_NAME "hp-sw"
-#define DM_HP_HWH_VER "1.0.0"
-
-struct hp_sw_context {
- unsigned char sense[SCSI_SENSE_BUFFERSIZE];
-};
-
-/*
- * hp_sw_error_is_retryable - Is an HP-specific check condition retryable?
- * @req: path activation request
- *
- * Examine error codes of request and determine whether the error is retryable.
- * Some error codes are already retried by scsi-ml (see
- * scsi_decide_disposition), but some HP specific codes are not.
- * The intent of this routine is to supply the logic for the HP specific
- * check conditions.
- *
- * Returns:
- * 1 - command completed with retryable error
- * 0 - command completed with non-retryable error
- *
- * Possible optimizations
- * 1. More hardware-specific error codes
- */
-static int hp_sw_error_is_retryable(struct request *req)
-{
- /*
- * NOT_READY is known to be retryable
- * For now we just dump out the sense data and call it retryable
- */
- if (status_byte(req->errors) == CHECK_CONDITION)
- __scsi_print_sense(DM_HP_HWH_NAME, req->sense, req->sense_len);
-
- /*
- * At this point we don't have complete information about all the error
- * codes from this hardware, so we are just conservative and retry
- * when in doubt.
- */
- return 1;
-}
-
-/*
- * hp_sw_end_io - Completion handler for HP path activation.
- * @req: path activation request
- * @error: scsi-ml error
- *
- * Check sense data, free request structure, and notify dm that
- * pg initialization has completed.
- *
- * Context: scsi-ml softirq
- *
- */
-static void hp_sw_end_io(struct request *req, int error)
-{
- struct dm_path *path = req->end_io_data;
- unsigned err_flags = 0;
-
- if (!error) {
- DMDEBUG("%s path activation command - success",
- path->dev->name);
- goto out;
- }
-
- if (hp_sw_error_is_retryable(req)) {
- DMDEBUG("%s path activation command - retry",
- path->dev->name);
- err_flags = MP_RETRY;
- goto out;
- }
-
- DMWARN("%s path activation fail - error=0x%x",
- path->dev->name, error);
- err_flags = MP_FAIL_PATH;
-
-out:
- req->end_io_data = NULL;
- __blk_put_request(req->q, req);
- dm_pg_init_complete(path, err_flags);
-}
-
-/*
- * hp_sw_get_request - Allocate an HP specific path activation request
- * @path: path on which request will be sent (needed for request queue)
- *
- * The START command is used for path activation request.
- * These arrays are controller-based failover, not LUN based.
- * One START command issued to a single path will fail over all
- * LUNs for the same controller.
- *
- * Possible optimizations
- * 1. Make timeout configurable
- * 2. Preallocate request
- */
-static struct request *hp_sw_get_request(struct dm_path *path)
-{
- struct request *req;
- struct block_device *bdev = path->dev->bdev;
- struct request_queue *q = bdev_get_queue(bdev);
- struct hp_sw_context *h = path->hwhcontext;
-
- req = blk_get_request(q, WRITE, GFP_NOIO);
- if (!req)
- goto out;
-
- req->timeout = 60 * HZ;
-
- req->errors = 0;
- req->cmd_type = REQ_TYPE_BLOCK_PC;
- req->cmd_flags |= REQ_FAILFAST | REQ_NOMERGE;
- req->end_io_data = path;
- req->sense = h->sense;
- memset(req->sense, 0, SCSI_SENSE_BUFFERSIZE);
-
- req->cmd[0] = START_STOP;
- req->cmd[4] = 1;
- req->cmd_len = COMMAND_SIZE(req->cmd[0]);
-
-out:
- return req;
-}
-
-/*
- * hp_sw_pg_init - HP path activation implementation.
- * @hwh: hardware handler specific data
- * @bypassed: unused; is the path group bypassed? (see dm-mpath.c)
- * @path: path to send initialization command
- *
- * Send an HP-specific path activation command on 'path'.
- * Do not try to optimize in any way, just send the activation command.
- * More than one path activation command may be sent to the same controller.
- * This seems to work fine for basic failover support.
- *
- * Possible optimizations
- * 1. Detect an in-progress activation request and avoid submitting another one
- * 2. Model the controller and only send a single activation request at a time
- * 3. Determine the state of a path before sending an activation request
- *
- * Context: kmpathd (see process_queued_ios() in dm-mpath.c)
- */
-static void hp_sw_pg_init(struct hw_handler *hwh, unsigned bypassed,
- struct dm_path *path)
-{
- struct request *req;
- struct hp_sw_context *h;
-
- path->hwhcontext = hwh->context;
- h = hwh->context;
-
- req = hp_sw_get_request(path);
- if (!req) {
- DMERR("%s path activation command - allocation fail",
- path->dev->name);
- goto retry;
- }
-
- DMDEBUG("%s path activation command - sent", path->dev->name);
-
- blk_execute_rq_nowait(req->q, NULL, req, 1, hp_sw_end_io);
- return;
-
-retry:
- dm_pg_init_complete(path, MP_RETRY);
-}
-
-static int hp_sw_create(struct hw_handler *hwh, unsigned argc, char **argv)
-{
- struct hp_sw_context *h;
-
- h = kmalloc(sizeof(*h), GFP_KERNEL);
- if (!h)
- return -ENOMEM;
-
- hwh->context = h;
-
- return 0;
-}
-
-static void hp_sw_destroy(struct hw_handler *hwh)
-{
- struct hp_sw_context *h = hwh->context;
-
- kfree(h);
-}
-
-static struct hw_handler_type hp_sw_hwh = {
- .name = DM_HP_HWH_NAME,
- .module = THIS_MODULE,
- .create = hp_sw_create,
- .destroy = hp_sw_destroy,
- .pg_init = hp_sw_pg_init,
-};
-
-static int __init hp_sw_init(void)
-{
- int r;
-
- r = dm_register_hw_handler(&hp_sw_hwh);
- if (r < 0)
- DMERR("register failed %d", r);
- else
- DMINFO("version " DM_HP_HWH_VER " loaded");
-
- return r;
-}
-
-static void __exit hp_sw_exit(void)
-{
- int r;
-
- r = dm_unregister_hw_handler(&hp_sw_hwh);
- if (r < 0)
- DMERR("unregister failed %d", r);
-}
-
-module_init(hp_sw_init);
-module_exit(hp_sw_exit);
-
-MODULE_DESCRIPTION("DM Multipath HP StorageWorks / FSC FibreCat (A/P) support");
-MODULE_AUTHOR("Mike Christie, Dave Wysochanski <dm-devel@redhat.com>");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(DM_HP_HWH_VER);
diff --git a/drivers/md/dm-mpath-rdac.c b/drivers/md/dm-mpath-rdac.c
deleted file mode 100644
index 95e77734880..00000000000
--- a/drivers/md/dm-mpath-rdac.c
+++ /dev/null
@@ -1,700 +0,0 @@
-/*
- * Engenio/LSI RDAC DM HW handler
- *
- * Copyright (C) 2005 Mike Christie. All rights reserved.
- * Copyright (C) Chandra Seetharaman, IBM Corp. 2007
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- */
-#include <scsi/scsi.h>
-#include <scsi/scsi_cmnd.h>
-#include <scsi/scsi_eh.h>
-
-#define DM_MSG_PREFIX "multipath rdac"
-
-#include "dm.h"
-#include "dm-hw-handler.h"
-
-#define RDAC_DM_HWH_NAME "rdac"
-#define RDAC_DM_HWH_VER "0.4"
-
-/*
- * LSI mode page stuff
- *
- * These struct definitions and the forming of the
- * mode page were taken from the LSI RDAC 2.4 GPL'd
- * driver, and then converted to Linux conventions.
- */
-#define RDAC_QUIESCENCE_TIME 20;
-/*
- * Page Codes
- */
-#define RDAC_PAGE_CODE_REDUNDANT_CONTROLLER 0x2c
-
-/*
- * Controller modes definitions
- */
-#define RDAC_MODE_TRANSFER_ALL_LUNS 0x01
-#define RDAC_MODE_TRANSFER_SPECIFIED_LUNS 0x02
-
-/*
- * RDAC Options field
- */
-#define RDAC_FORCED_QUIESENCE 0x02
-
-#define RDAC_FAILOVER_TIMEOUT (60 * HZ)
-
-struct rdac_mode_6_hdr {
- u8 data_len;
- u8 medium_type;
- u8 device_params;
- u8 block_desc_len;
-};
-
-struct rdac_mode_10_hdr {
- u16 data_len;
- u8 medium_type;
- u8 device_params;
- u16 reserved;
- u16 block_desc_len;
-};
-
-struct rdac_mode_common {
- u8 controller_serial[16];
- u8 alt_controller_serial[16];
- u8 rdac_mode[2];
- u8 alt_rdac_mode[2];
- u8 quiescence_timeout;
- u8 rdac_options;
-};
-
-struct rdac_pg_legacy {
- struct rdac_mode_6_hdr hdr;
- u8 page_code;
- u8 page_len;
- struct rdac_mode_common common;
-#define MODE6_MAX_LUN 32
- u8 lun_table[MODE6_MAX_LUN];
- u8 reserved2[32];
- u8 reserved3;
- u8 reserved4;
-};
-
-struct rdac_pg_expanded {
- struct rdac_mode_10_hdr hdr;
- u8 page_code;
- u8 subpage_code;
- u8 page_len[2];
- struct rdac_mode_common common;
- u8 lun_table[256];
- u8 reserved3;
- u8 reserved4;
-};
-
-struct c9_inquiry {
- u8 peripheral_info;
- u8 page_code; /* 0xC9 */
- u8 reserved1;
- u8 page_len;
- u8 page_id[4]; /* "vace" */
- u8 avte_cvp;
- u8 path_prio;
- u8 reserved2[38];
-};
-
-#define SUBSYS_ID_LEN 16
-#define SLOT_ID_LEN 2
-
-struct c4_inquiry {
- u8 peripheral_info;
- u8 page_code; /* 0xC4 */
- u8 reserved1;
- u8 page_len;
- u8 page_id[4]; /* "subs" */
- u8 subsys_id[SUBSYS_ID_LEN];
- u8 revision[4];
- u8 slot_id[SLOT_ID_LEN];
- u8 reserved[2];
-};
-
-struct rdac_controller {
- u8 subsys_id[SUBSYS_ID_LEN];
- u8 slot_id[SLOT_ID_LEN];
- int use_10_ms;
- struct kref kref;
- struct list_head node; /* list of all controllers */
- spinlock_t lock;
- int submitted;
- struct list_head cmd_list; /* list of commands to be submitted */
- union {
- struct rdac_pg_legacy legacy;
- struct rdac_pg_expanded expanded;
- } mode_select;
-};
-struct c8_inquiry {
- u8 peripheral_info;
- u8 page_code; /* 0xC8 */
- u8 reserved1;
- u8 page_len;
- u8 page_id[4]; /* "edid" */
- u8 reserved2[3];
- u8 vol_uniq_id_len;
- u8 vol_uniq_id[16];
- u8 vol_user_label_len;
- u8 vol_user_label[60];
- u8 array_uniq_id_len;
- u8 array_unique_id[16];
- u8 array_user_label_len;
- u8 array_user_label[60];
- u8 lun[8];
-};
-
-struct c2_inquiry {
- u8 peripheral_info;
- u8 page_code; /* 0xC2 */
- u8 reserved1;
- u8 page_len;
- u8 page_id[4]; /* "swr4" */
- u8 sw_version[3];
- u8 sw_date[3];
- u8 features_enabled;
- u8 max_lun_supported;
- u8 partitions[239]; /* Total allocation length should be 0xFF */
-};
-
-struct rdac_handler {
- struct list_head entry; /* list waiting to submit MODE SELECT */
- unsigned timeout;
- struct rdac_controller *ctlr;
-#define UNINITIALIZED_LUN (1 << 8)
- unsigned lun;
- unsigned char sense[SCSI_SENSE_BUFFERSIZE];
- struct dm_path *path;
- struct work_struct work;
-#define SEND_C2_INQUIRY 1
-#define SEND_C4_INQUIRY 2
-#define SEND_C8_INQUIRY 3
-#define SEND_C9_INQUIRY 4
-#define SEND_MODE_SELECT 5
- int cmd_to_send;
- union {
- struct c2_inquiry c2;
- struct c4_inquiry c4;
- struct c8_inquiry c8;
- struct c9_inquiry c9;
- } inq;
-};
-
-static LIST_HEAD(ctlr_list);
-static DEFINE_SPINLOCK(list_lock);
-static struct workqueue_struct *rdac_wkqd;
-
-static inline int had_failures(struct request *req, int error)
-{
- return (error || host_byte(req->errors) != DID_OK ||
- msg_byte(req->errors) != COMMAND_COMPLETE);
-}
-
-static void rdac_resubmit_all(struct rdac_handler *h)
-{
- struct rdac_controller *ctlr = h->ctlr;
- struct rdac_handler *tmp, *h1;
-
- spin_lock(&ctlr->lock);
- list_for_each_entry_safe(h1, tmp, &ctlr->cmd_list, entry) {
- h1->cmd_to_send = SEND_C9_INQUIRY;
- queue_work(rdac_wkqd, &h1->work);
- list_del(&h1->entry);
- }
- ctlr->submitted = 0;
- spin_unlock(&ctlr->lock);
-}
-
-static void mode_select_endio(struct request *req, int error)
-{
- struct rdac_handler *h = req->end_io_data;
- struct scsi_sense_hdr sense_hdr;
- int sense = 0, fail = 0;
-
- if (had_failures(req, error)) {
- fail = 1;
- goto failed;
- }
-
- if (status_byte(req->errors) == CHECK_CONDITION) {
- scsi_normalize_sense(req->sense, SCSI_SENSE_BUFFERSIZE,
- &sense_hdr);
- sense = (sense_hdr.sense_key << 16) | (sense_hdr.asc << 8) |
- sense_hdr.ascq;
- /* If it is retryable failure, submit the c9 inquiry again */
- if (sense == 0x59136 || sense == 0x68b02 || sense == 0xb8b02 ||
- sense == 0x62900) {
- /* 0x59136 - Command lock contention
- * 0x[6b]8b02 - Quiesense in progress or achieved
- * 0x62900 - Power On, Reset, or Bus Device Reset
- */
- h->cmd_to_send = SEND_C9_INQUIRY;
- queue_work(rdac_wkqd, &h->work);
- goto done;
- }
- if (sense)
- DMINFO("MODE_SELECT failed on %s with sense 0x%x",
- h->path->dev->name, sense);
- }
-failed:
- if (fail || sense)
- dm_pg_init_complete(h->path, MP_FAIL_PATH);
- else
- dm_pg_init_complete(h->path, 0);
-
-done:
- rdac_resubmit_all(h);
- __blk_put_request(req->q, req);
-}
-
-static struct request *get_rdac_req(struct rdac_handler *h,
- void *buffer, unsigned buflen, int rw)
-{
- struct request *rq;
- struct request_queue *q = bdev_get_queue(h->path->dev->bdev);
-
- rq = blk_get_request(q, rw, GFP_KERNEL);
-
- if (!rq) {
- DMINFO("get_rdac_req: blk_get_request failed");
- return NULL;
- }
-
- if (buflen && blk_rq_map_kern(q, rq, buffer, buflen, GFP_KERNEL)) {
- blk_put_request(rq);
- DMINFO("get_rdac_req: blk_rq_map_kern failed");
- return NULL;
- }
-
- rq->sense = h->sense;
- memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE);
- rq->sense_len = 0;
-
- rq->end_io_data = h;
- rq->timeout = h->timeout;
- rq->cmd_type = REQ_TYPE_BLOCK_PC;
- rq->cmd_flags |= REQ_FAILFAST | REQ_NOMERGE;
- return rq;
-}
-
-static struct request *rdac_failover_get(struct rdac_handler *h)
-{
- struct request *rq;
- struct rdac_mode_common *common;
- unsigned data_size;
-
- if (h->ctlr->use_10_ms) {
- struct rdac_pg_expanded *rdac_pg;
-
- data_size = sizeof(struct rdac_pg_expanded);
- rdac_pg = &h->ctlr->mode_select.expanded;
- memset(rdac_pg, 0, data_size);
- common = &rdac_pg->common;
- rdac_pg->page_code = RDAC_PAGE_CODE_REDUNDANT_CONTROLLER + 0x40;
- rdac_pg->subpage_code = 0x1;
- rdac_pg->page_len[0] = 0x01;
- rdac_pg->page_len[1] = 0x28;
- rdac_pg->lun_table[h->lun] = 0x81;
- } else {
- struct rdac_pg_legacy *rdac_pg;
-
- data_size = sizeof(struct rdac_pg_legacy);
- rdac_pg = &h->ctlr->mode_select.legacy;
- memset(rdac_pg, 0, data_size);
- common = &rdac_pg->common;
- rdac_pg->page_code = RDAC_PAGE_CODE_REDUNDANT_CONTROLLER;
- rdac_pg->page_len = 0x68;
- rdac_pg->lun_table[h->lun] = 0x81;
- }
- common->rdac_mode[1] = RDAC_MODE_TRANSFER_SPECIFIED_LUNS;
- common->quiescence_timeout = RDAC_QUIESCENCE_TIME;
- common->rdac_options = RDAC_FORCED_QUIESENCE;
-
- /* get request for block layer packet command */
- rq = get_rdac_req(h, &h->ctlr->mode_select, data_size, WRITE);
- if (!rq) {
- DMERR("rdac_failover_get: no rq");
- return NULL;
- }
-
- /* Prepare the command. */
- if (h->ctlr->use_10_ms) {
- rq->cmd[0] = MODE_SELECT_10;
- rq->cmd[7] = data_size >> 8;
- rq->cmd[8] = data_size & 0xff;
- } else {
- rq->cmd[0] = MODE_SELECT;
- rq->cmd[4] = data_size;
- }
- rq->cmd_len = COMMAND_SIZE(rq->cmd[0]);
-
- return rq;
-}
-
-/* Acquires h->ctlr->lock */
-static void submit_mode_select(struct rdac_handler *h)
-{
- struct request *rq;
- struct request_queue *q = bdev_get_queue(h->path->dev->bdev);
-
- spin_lock(&h->ctlr->lock);
- if (h->ctlr->submitted) {
- list_add(&h->entry, &h->ctlr->cmd_list);
- goto drop_lock;
- }
-
- if (!q) {
- DMINFO("submit_mode_select: no queue");
- goto fail_path;
- }
-
- rq = rdac_failover_get(h);
- if (!rq) {
- DMERR("submit_mode_select: no rq");
- goto fail_path;
- }
-
- DMINFO("queueing MODE_SELECT command on %s", h->path->dev->name);
-
- blk_execute_rq_nowait(q, NULL, rq, 1, mode_select_endio);
- h->ctlr->submitted = 1;
- goto drop_lock;
-fail_path:
- dm_pg_init_complete(h->path, MP_FAIL_PATH);
-drop_lock:
- spin_unlock(&h->ctlr->lock);
-}
-
-static void release_ctlr(struct kref *kref)
-{
- struct rdac_controller *ctlr;
- ctlr = container_of(kref, struct rdac_controller, kref);
-
- spin_lock(&list_lock);
- list_del(&ctlr->node);
- spin_unlock(&list_lock);
- kfree(ctlr);
-}
-
-static struct rdac_controller *get_controller(u8 *subsys_id, u8 *slot_id)
-{
- struct rdac_controller *ctlr, *tmp;
-
- spin_lock(&list_lock);
-
- list_for_each_entry(tmp, &ctlr_list, node) {
- if ((memcmp(tmp->subsys_id, subsys_id, SUBSYS_ID_LEN) == 0) &&
- (memcmp(tmp->slot_id, slot_id, SLOT_ID_LEN) == 0)) {
- kref_get(&tmp->kref);
- spin_unlock(&list_lock);
- return tmp;
- }
- }
- ctlr = kmalloc(sizeof(*ctlr), GFP_ATOMIC);
- if (!ctlr)
- goto done;
-
- /* initialize fields of controller */
- memcpy(ctlr->subsys_id, subsys_id, SUBSYS_ID_LEN);
- memcpy(ctlr->slot_id, slot_id, SLOT_ID_LEN);
- kref_init(&ctlr->kref);
- spin_lock_init(&ctlr->lock);
- ctlr->submitted = 0;
- ctlr->use_10_ms = -1;
- INIT_LIST_HEAD(&ctlr->cmd_list);
- list_add(&ctlr->node, &ctlr_list);
-done:
- spin_unlock(&list_lock);
- return ctlr;
-}
-
-static void c4_endio(struct request *req, int error)
-{
- struct rdac_handler *h = req->end_io_data;
- struct c4_inquiry *sp;
-
- if (had_failures(req, error)) {
- dm_pg_init_complete(h->path, MP_FAIL_PATH);
- goto done;
- }
-
- sp = &h->inq.c4;
-
- h->ctlr = get_controller(sp->subsys_id, sp->slot_id);
-
- if (h->ctlr) {
- h->cmd_to_send = SEND_C9_INQUIRY;
- queue_work(rdac_wkqd, &h->work);
- } else
- dm_pg_init_complete(h->path, MP_FAIL_PATH);
-done:
- __blk_put_request(req->q, req);
-}
-
-static void c2_endio(struct request *req, int error)
-{
- struct rdac_handler *h = req->end_io_data;
- struct c2_inquiry *sp;
-
- if (had_failures(req, error)) {
- dm_pg_init_complete(h->path, MP_FAIL_PATH);
- goto done;
- }
-
- sp = &h->inq.c2;
-
- /* If more than MODE6_MAX_LUN luns are supported, use mode select 10 */
- if (sp->max_lun_supported >= MODE6_MAX_LUN)
- h->ctlr->use_10_ms = 1;
- else
- h->ctlr->use_10_ms = 0;
-
- h->cmd_to_send = SEND_MODE_SELECT;
- queue_work(rdac_wkqd, &h->work);
-done:
- __blk_put_request(req->q, req);
-}
-
-static void c9_endio(struct request *req, int error)
-{
- struct rdac_handler *h = req->end_io_data;
- struct c9_inquiry *sp;
-
- if (had_failures(req, error)) {
- dm_pg_init_complete(h->path, MP_FAIL_PATH);
- goto done;
- }
-
- /* We need to look at the sense keys here to take clear action.
- * For now simple logic: If the host is in AVT mode or if controller
- * owns the lun, return dm_pg_init_complete(), otherwise submit
- * MODE SELECT.
- */
- sp = &h->inq.c9;
-
- /* If in AVT mode, return success */
- if ((sp->avte_cvp >> 7) == 0x1) {
- dm_pg_init_complete(h->path, 0);
- goto done;
- }
-
- /* If the controller on this path owns the LUN, return success */
- if (sp->avte_cvp & 0x1) {
- dm_pg_init_complete(h->path, 0);
- goto done;
- }
-
- if (h->ctlr) {
- if (h->ctlr->use_10_ms == -1)
- h->cmd_to_send = SEND_C2_INQUIRY;
- else
- h->cmd_to_send = SEND_MODE_SELECT;
- } else
- h->cmd_to_send = SEND_C4_INQUIRY;
- queue_work(rdac_wkqd, &h->work);
-done:
- __blk_put_request(req->q, req);
-}
-
-static void c8_endio(struct request *req, int error)
-{
- struct rdac_handler *h = req->end_io_data;
- struct c8_inquiry *sp;
-
- if (had_failures(req, error)) {
- dm_pg_init_complete(h->path, MP_FAIL_PATH);
- goto done;
- }
-
- /* We need to look at the sense keys here to take clear action.
- * For now simple logic: Get the lun from the inquiry page.
- */
- sp = &h->inq.c8;
- h->lun = sp->lun[7]; /* currently it uses only one byte */
- h->cmd_to_send = SEND_C9_INQUIRY;
- queue_work(rdac_wkqd, &h->work);
-done:
- __blk_put_request(req->q, req);
-}
-
-static void submit_inquiry(struct rdac_handler *h, int page_code,
- unsigned int len, rq_end_io_fn endio)
-{
- struct request *rq;
- struct request_queue *q = bdev_get_queue(h->path->dev->bdev);
-
- if (!q)
- goto fail_path;
-
- rq = get_rdac_req(h, &h->inq, len, READ);
- if (!rq)
- goto fail_path;
-
- /* Prepare the command. */
- rq->cmd[0] = INQUIRY;
- rq->cmd[1] = 1;
- rq->cmd[2] = page_code;
- rq->cmd[4] = len;
- rq->cmd_len = COMMAND_SIZE(INQUIRY);
- blk_execute_rq_nowait(q, NULL, rq, 1, endio);
- return;
-
-fail_path:
- dm_pg_init_complete(h->path, MP_FAIL_PATH);
-}
-
-static void service_wkq(struct work_struct *work)
-{
- struct rdac_handler *h = container_of(work, struct rdac_handler, work);
-
- switch (h->cmd_to_send) {
- case SEND_C2_INQUIRY:
- submit_inquiry(h, 0xC2, sizeof(struct c2_inquiry), c2_endio);
- break;
- case SEND_C4_INQUIRY:
- submit_inquiry(h, 0xC4, sizeof(struct c4_inquiry), c4_endio);
- break;
- case SEND_C8_INQUIRY:
- submit_inquiry(h, 0xC8, sizeof(struct c8_inquiry), c8_endio);
- break;
- case SEND_C9_INQUIRY:
- submit_inquiry(h, 0xC9, sizeof(struct c9_inquiry), c9_endio);
- break;
- case SEND_MODE_SELECT:
- submit_mode_select(h);
- break;
- default:
- BUG();
- }
-}
-/*
- * only support subpage2c until we confirm that this is just a matter of
- * of updating firmware or not, and RDAC (basic AVT works already) for now
- * but we can add these in in when we get time and testers
- */
-static int rdac_create(struct hw_handler *hwh, unsigned argc, char **argv)
-{
- struct rdac_handler *h;
- unsigned timeout;
-
- if (argc == 0) {
- /* No arguments: use defaults */
- timeout = RDAC_FAILOVER_TIMEOUT;
- } else if (argc != 1) {
- DMWARN("incorrect number of arguments");
- return -EINVAL;
- } else {
- if (sscanf(argv[1], "%u", &timeout) != 1) {
- DMWARN("invalid timeout value");
- return -EINVAL;
- }
- }
-
- h = kzalloc(sizeof(*h), GFP_KERNEL);
- if (!h)
- return -ENOMEM;
-
- hwh->context = h;
- h->timeout = timeout;
- h->lun = UNINITIALIZED_LUN;
- INIT_WORK(&h->work, service_wkq);
- DMWARN("using RDAC command with timeout %u", h->timeout);
-
- return 0;
-}
-
-static void rdac_destroy(struct hw_handler *hwh)
-{
- struct rdac_handler *h = hwh->context;
-
- if (h->ctlr)
- kref_put(&h->ctlr->kref, release_ctlr);
- kfree(h);
- hwh->context = NULL;
-}
-
-static unsigned rdac_error(struct hw_handler *hwh, struct bio *bio)
-{
- /* Try default handler */
- return dm_scsi_err_handler(hwh, bio);
-}
-
-static void rdac_pg_init(struct hw_handler *hwh, unsigned bypassed,
- struct dm_path *path)
-{
- struct rdac_handler *h = hwh->context;
-
- h->path = path;
- switch (h->lun) {
- case UNINITIALIZED_LUN:
- submit_inquiry(h, 0xC8, sizeof(struct c8_inquiry), c8_endio);
- break;
- default:
- submit_inquiry(h, 0xC9, sizeof(struct c9_inquiry), c9_endio);
- }
-}
-
-static struct hw_handler_type rdac_handler = {
- .name = RDAC_DM_HWH_NAME,
- .module = THIS_MODULE,
- .create = rdac_create,
- .destroy = rdac_destroy,
- .pg_init = rdac_pg_init,
- .error = rdac_error,
-};
-
-static int __init rdac_init(void)
-{
- int r;
-
- rdac_wkqd = create_singlethread_workqueue("rdac_wkqd");
- if (!rdac_wkqd) {
- DMERR("Failed to create workqueue rdac_wkqd.");
- return -ENOMEM;
- }
-
- r = dm_register_hw_handler(&rdac_handler);
- if (r < 0) {
- DMERR("%s: register failed %d", RDAC_DM_HWH_NAME, r);
- destroy_workqueue(rdac_wkqd);
- return r;
- }
-
- DMINFO("%s: version %s loaded", RDAC_DM_HWH_NAME, RDAC_DM_HWH_VER);
- return 0;
-}
-
-static void __exit rdac_exit(void)
-{
- int r = dm_unregister_hw_handler(&rdac_handler);
-
- destroy_workqueue(rdac_wkqd);
- if (r < 0)
- DMERR("%s: unregister failed %d", RDAC_DM_HWH_NAME, r);
-}
-
-module_init(rdac_init);
-module_exit(rdac_exit);
-
-MODULE_DESCRIPTION("DM Multipath LSI/Engenio RDAC support");
-MODULE_AUTHOR("Mike Christie, Chandra Seetharaman");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(RDAC_DM_HWH_VER);
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index e7ee59e655d..9f7302d4878 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -7,7 +7,6 @@
#include "dm.h"
#include "dm-path-selector.h"
-#include "dm-hw-handler.h"
#include "dm-bio-list.h"
#include "dm-bio-record.h"
#include "dm-uevent.h"
@@ -20,6 +19,7 @@
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/workqueue.h>
+#include <scsi/scsi_dh.h>
#include <asm/atomic.h>
#define DM_MSG_PREFIX "multipath"
@@ -61,7 +61,8 @@ struct multipath {
spinlock_t lock;
- struct hw_handler hw_handler;
+ const char *hw_handler_name;
+ struct work_struct activate_path;
unsigned nr_priority_groups;
struct list_head priority_groups;
unsigned pg_init_required; /* pg_init needs calling? */
@@ -106,9 +107,10 @@ typedef int (*action_fn) (struct pgpath *pgpath);
static struct kmem_cache *_mpio_cache;
-static struct workqueue_struct *kmultipathd;
+static struct workqueue_struct *kmultipathd, *kmpath_handlerd;
static void process_queued_ios(struct work_struct *work);
static void trigger_event(struct work_struct *work);
+static void activate_path(struct work_struct *work);
/*-----------------------------------------------
@@ -178,6 +180,7 @@ static struct multipath *alloc_multipath(struct dm_target *ti)
m->queue_io = 1;
INIT_WORK(&m->process_queued_ios, process_queued_ios);
INIT_WORK(&m->trigger_event, trigger_event);
+ INIT_WORK(&m->activate_path, activate_path);
m->mpio_pool = mempool_create_slab_pool(MIN_IOS, _mpio_cache);
if (!m->mpio_pool) {
kfree(m);
@@ -193,18 +196,13 @@ static struct multipath *alloc_multipath(struct dm_target *ti)
static void free_multipath(struct multipath *m)
{
struct priority_group *pg, *tmp;
- struct hw_handler *hwh = &m->hw_handler;
list_for_each_entry_safe(pg, tmp, &m->priority_groups, list) {
list_del(&pg->list);
free_priority_group(pg, m->ti);
}
- if (hwh->type) {
- hwh->type->destroy(hwh);
- dm_put_hw_handler(hwh->type);
- }
-
+ kfree(m->hw_handler_name);
mempool_destroy(m->mpio_pool);
kfree(m);
}
@@ -216,12 +214,10 @@ static void free_multipath(struct multipath *m)
static void __switch_pg(struct multipath *m, struct pgpath *pgpath)
{
- struct hw_handler *hwh = &m->hw_handler;
-
m->current_pg = pgpath->pg;
/* Must we initialise the PG first, and queue I/O till it's ready? */
- if (hwh->type && hwh->type->pg_init) {
+ if (m->hw_handler_name) {
m->pg_init_required = 1;
m->queue_io = 1;
} else {
@@ -409,7 +405,6 @@ static void process_queued_ios(struct work_struct *work)
{
struct multipath *m =
container_of(work, struct multipath, process_queued_ios);
- struct hw_handler *hwh = &m->hw_handler;
struct pgpath *pgpath = NULL;
unsigned init_required = 0, must_queue = 1;
unsigned long flags;
@@ -439,7 +434,7 @@ out:
spin_unlock_irqrestore(&m->lock, flags);
if (init_required)
- hwh->type->pg_init(hwh, pgpath->pg->bypassed, &pgpath->path);
+ queue_work(kmpath_handlerd, &m->activate_path);
if (!must_queue)
dispatch_queued_ios(m);
@@ -652,8 +647,6 @@ static struct priority_group *parse_priority_group(struct arg_set *as,
static int parse_hw_handler(struct arg_set *as, struct multipath *m)
{
- int r;
- struct hw_handler_type *hwht;
unsigned hw_argc;
struct dm_target *ti = m->ti;
@@ -661,30 +654,20 @@ static int parse_hw_handler(struct arg_set *as, struct multipath *m)
{0, 1024, "invalid number of hardware handler args"},
};
- r = read_param(_params, shift(as), &hw_argc, &ti->error);
- if (r)
+ if (read_param(_params, shift(as), &hw_argc, &ti->error))
return -EINVAL;
if (!hw_argc)
return 0;
- hwht = dm_get_hw_handler(shift(as));
- if (!hwht) {
+ m->hw_handler_name = kstrdup(shift(as), GFP_KERNEL);
+ request_module("scsi_dh_%s", m->hw_handler_name);
+ if (scsi_dh_handler_exist(m->hw_handler_name) == 0) {
ti->error = "unknown hardware handler type";
+ kfree(m->hw_handler_name);
+ m->hw_handler_name = NULL;
return -EINVAL;
}
-
- m->hw_handler.md = dm_table_get_md(ti->table);
- dm_put(m->hw_handler.md);
-
- r = hwht->create(&m->hw_handler, hw_argc - 1, as->argv);
- if (r) {
- dm_put_hw_handler(hwht);
- ti->error = "hardware handler constructor failed";
- return r;
- }
-
- m->hw_handler.type = hwht;
consume(as, hw_argc - 1);
return 0;
@@ -808,6 +791,7 @@ static void multipath_dtr(struct dm_target *ti)
{
struct multipath *m = (struct multipath *) ti->private;
+ flush_workqueue(kmpath_handlerd);
flush_workqueue(kmultipathd);
free_multipath(m);
}
@@ -1025,52 +1009,85 @@ static int pg_init_limit_reached(struct multipath *m, struct pgpath *pgpath)
return limit_reached;
}
-/*
- * pg_init must call this when it has completed its initialisation
- */
-void dm_pg_init_complete(struct dm_path *path, unsigned err_flags)
+static void pg_init_done(struct dm_path *path, int errors)
{
struct pgpath *pgpath = path_to_pgpath(path);
struct priority_group *pg = pgpath->pg;
struct multipath *m = pg->m;
unsigned long flags;
- /*
- * If requested, retry pg_init until maximum number of retries exceeded.
- * If retry not requested and PG already bypassed, always fail the path.
- */
- if (err_flags & MP_RETRY) {
- if (pg_init_limit_reached(m, pgpath))
- err_flags |= MP_FAIL_PATH;
- } else if (err_flags && pg->bypassed)
- err_flags |= MP_FAIL_PATH;
-
- if (err_flags & MP_FAIL_PATH)
+ /* device or driver problems */
+ switch (errors) {
+ case SCSI_DH_OK:
+ break;
+ case SCSI_DH_NOSYS:
+ if (!m->hw_handler_name) {
+ errors = 0;
+ break;
+ }
+ DMERR("Cannot failover device because scsi_dh_%s was not "
+ "loaded.", m->hw_handler_name);
+ /*
+ * Fail path for now, so we do not ping pong
+ */
fail_path(pgpath);
-
- if (err_flags & MP_BYPASS_PG)
+ break;
+ case SCSI_DH_DEV_TEMP_BUSY:
+ /*
+ * Probably doing something like FW upgrade on the
+ * controller so try the other pg.
+ */
bypass_pg(m, pg, 1);
+ break;
+ /* TODO: For SCSI_DH_RETRY we should wait a couple seconds */
+ case SCSI_DH_RETRY:
+ case SCSI_DH_IMM_RETRY:
+ case SCSI_DH_RES_TEMP_UNAVAIL:
+ if (pg_init_limit_reached(m, pgpath))
+ fail_path(pgpath);
+ errors = 0;
+ break;
+ default:
+ /*
+ * We probably do not want to fail the path for a device
+ * error, but this is what the old dm did. In future
+ * patches we can do more advanced handling.
+ */
+ fail_path(pgpath);
+ }
spin_lock_irqsave(&m->lock, flags);
- if (err_flags & ~MP_RETRY) {
+ if (errors) {
+ DMERR("Could not failover device. Error %d.", errors);
m->current_pgpath = NULL;
m->current_pg = NULL;
- } else if (!m->pg_init_required)
+ } else if (!m->pg_init_required) {
m->queue_io = 0;
+ pg->bypassed = 0;
+ }
m->pg_init_in_progress = 0;
queue_work(kmultipathd, &m->process_queued_ios);
spin_unlock_irqrestore(&m->lock, flags);
}
+static void activate_path(struct work_struct *work)
+{
+ int ret;
+ struct multipath *m =
+ container_of(work, struct multipath, activate_path);
+ struct dm_path *path = &m->current_pgpath->path;
+
+ ret = scsi_dh_activate(bdev_get_queue(path->dev->bdev));
+ pg_init_done(path, ret);
+}
+
/*
* end_io handling
*/
static int do_end_io(struct multipath *m, struct bio *bio,
int error, struct dm_mpath_io *mpio)
{
- struct hw_handler *hwh = &m->hw_handler;
- unsigned err_flags = MP_FAIL_PATH; /* Default behavior */
unsigned long flags;
if (!error)
@@ -1097,19 +1114,8 @@ static int do_end_io(struct multipath *m, struct bio *bio,
}
spin_unlock_irqrestore(&m->lock, flags);
- if (hwh->type && hwh->type->error)
- err_flags = hwh->type->error(hwh, bio);
-
- if (mpio->pgpath) {
- if (err_flags & MP_FAIL_PATH)
- fail_path(mpio->pgpath);
-
- if (err_flags & MP_BYPASS_PG)
- bypass_pg(m, mpio->pgpath->pg, 1);
- }
-
- if (err_flags & MP_ERROR_IO)
- return -EIO;
+ if (mpio->pgpath)
+ fail_path(mpio->pgpath);
requeue:
dm_bio_restore(&mpio->details, bio);
@@ -1194,7 +1200,6 @@ static int multipath_status(struct dm_target *ti, status_type_t type,
int sz = 0;
unsigned long flags;
struct multipath *m = (struct multipath *) ti->private;
- struct hw_handler *hwh = &m->hw_handler;
struct priority_group *pg;
struct pgpath *p;
unsigned pg_num;
@@ -1214,12 +1219,10 @@ static int multipath_status(struct dm_target *ti, status_type_t type,
DMEMIT("pg_init_retries %u ", m->pg_init_retries);
}
- if (hwh->type && hwh->type->status)
- sz += hwh->type->status(hwh, type, result + sz, maxlen - sz);
- else if (!hwh->type || type == STATUSTYPE_INFO)
+ if (!m->hw_handler_name || type == STATUSTYPE_INFO)
DMEMIT("0 ");
else
- DMEMIT("1 %s ", hwh->type->name);
+ DMEMIT("1 %s ", m->hw_handler_name);
DMEMIT("%u ", m->nr_priority_groups);
@@ -1422,6 +1425,21 @@ static int __init dm_multipath_init(void)
return -ENOMEM;
}
+ /*
+ * A separate workqueue is used to handle the device handlers
+ * to avoid overloading existing workqueue. Overloading the
+ * old workqueue would also create a bottleneck in the
+ * path of the storage hardware device activation.
+ */
+ kmpath_handlerd = create_singlethread_workqueue("kmpath_handlerd");
+ if (!kmpath_handlerd) {
+ DMERR("failed to create workqueue kmpath_handlerd");
+ destroy_workqueue(kmultipathd);
+ dm_unregister_target(&multipath_target);
+ kmem_cache_destroy(_mpio_cache);
+ return -ENOMEM;
+ }
+
DMINFO("version %u.%u.%u loaded",
multipath_target.version[0], multipath_target.version[1],
multipath_target.version[2]);
@@ -1433,6 +1451,7 @@ static void __exit dm_multipath_exit(void)
{
int r;
+ destroy_workqueue(kmpath_handlerd);
destroy_workqueue(kmultipathd);
r = dm_unregister_target(&multipath_target);
@@ -1441,8 +1460,6 @@ static void __exit dm_multipath_exit(void)
kmem_cache_destroy(_mpio_cache);
}
-EXPORT_SYMBOL_GPL(dm_pg_init_complete);
-
module_init(dm_multipath_init);
module_exit(dm_multipath_exit);
diff --git a/drivers/md/dm-mpath.h b/drivers/md/dm-mpath.h
index b9cdcbb3ed5..c198b856a45 100644
--- a/drivers/md/dm-mpath.h
+++ b/drivers/md/dm-mpath.h
@@ -16,7 +16,6 @@ struct dm_path {
unsigned is_active; /* Read-only */
void *pscontext; /* For path-selector use */
- void *hwhcontext; /* For hw-handler use */
};
/* Callback for hwh_pg_init_fn to use when complete */
diff --git a/drivers/message/fusion/lsi/mpi.h b/drivers/message/fusion/lsi/mpi.h
index 1acbdd61b67..10b6ef75872 100644
--- a/drivers/message/fusion/lsi/mpi.h
+++ b/drivers/message/fusion/lsi/mpi.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2000-2007 LSI Corporation.
+ * Copyright (c) 2000-2008 LSI Corporation.
*
*
* Name: mpi.h
diff --git a/drivers/message/fusion/lsi/mpi_cnfg.h b/drivers/message/fusion/lsi/mpi_cnfg.h
index 2bd8adae0f0..b2db3330c59 100644
--- a/drivers/message/fusion/lsi/mpi_cnfg.h
+++ b/drivers/message/fusion/lsi/mpi_cnfg.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2000-2007 LSI Corporation.
+ * Copyright (c) 2000-2008 LSI Corporation.
*
*
* Name: mpi_cnfg.h
diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index d40d6d15ae2..75e599b85b6 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -5,7 +5,7 @@
* For use with LSI PCI chip/adapter(s)
* running LSI Fusion MPT (Message Passing Technology) firmware.
*
- * Copyright (c) 1999-2007 LSI Corporation
+ * Copyright (c) 1999-2008 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
*/
@@ -103,7 +103,7 @@ static int mfcounter = 0;
* Public data...
*/
-struct proc_dir_entry *mpt_proc_root_dir;
+static struct proc_dir_entry *mpt_proc_root_dir;
#define WHOINIT_UNKNOWN 0xAA
@@ -253,6 +253,55 @@ mpt_get_cb_idx(MPT_DRIVER_CLASS dclass)
return 0;
}
+/**
+ * mpt_fault_reset_work - work performed on workq after ioc fault
+ * @work: input argument, used to derive ioc
+ *
+**/
+static void
+mpt_fault_reset_work(struct work_struct *work)
+{
+ MPT_ADAPTER *ioc =
+ container_of(work, MPT_ADAPTER, fault_reset_work.work);
+ u32 ioc_raw_state;
+ int rc;
+ unsigned long flags;
+
+ if (ioc->diagPending || !ioc->active)
+ goto out;
+
+ ioc_raw_state = mpt_GetIocState(ioc, 0);
+ if ((ioc_raw_state & MPI_IOC_STATE_MASK) == MPI_IOC_STATE_FAULT) {
+ printk(MYIOC_s_WARN_FMT "IOC is in FAULT state (%04xh)!!!\n",
+ ioc->name, ioc_raw_state & MPI_DOORBELL_DATA_MASK);
+ printk(MYIOC_s_WARN_FMT "Issuing HardReset from %s!!\n",
+ ioc->name, __FUNCTION__);
+ rc = mpt_HardResetHandler(ioc, CAN_SLEEP);
+ printk(MYIOC_s_WARN_FMT "%s: HardReset: %s\n", ioc->name,
+ __FUNCTION__, (rc == 0) ? "success" : "failed");
+ ioc_raw_state = mpt_GetIocState(ioc, 0);
+ if ((ioc_raw_state & MPI_IOC_STATE_MASK) == MPI_IOC_STATE_FAULT)
+ printk(MYIOC_s_WARN_FMT "IOC is in FAULT state after "
+ "reset (%04xh)\n", ioc->name, ioc_raw_state &
+ MPI_DOORBELL_DATA_MASK);
+ }
+
+ out:
+ /*
+ * Take turns polling alternate controller
+ */
+ if (ioc->alt_ioc)
+ ioc = ioc->alt_ioc;
+
+ /* rearm the timer */
+ spin_lock_irqsave(&ioc->fault_reset_work_lock, flags);
+ if (ioc->reset_work_q)
+ queue_delayed_work(ioc->reset_work_q, &ioc->fault_reset_work,
+ msecs_to_jiffies(MPT_POLLING_INTERVAL));
+ spin_unlock_irqrestore(&ioc->fault_reset_work_lock, flags);
+}
+
+
/*
* Process turbo (context) reply...
*/
@@ -1616,6 +1665,22 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
/* Find lookup slot. */
INIT_LIST_HEAD(&ioc->list);
+
+ /* Initialize workqueue */
+ INIT_DELAYED_WORK(&ioc->fault_reset_work, mpt_fault_reset_work);
+ spin_lock_init(&ioc->fault_reset_work_lock);
+
+ snprintf(ioc->reset_work_q_name, KOBJ_NAME_LEN, "mpt_poll_%d", ioc->id);
+ ioc->reset_work_q =
+ create_singlethread_workqueue(ioc->reset_work_q_name);
+ if (!ioc->reset_work_q) {
+ printk(MYIOC_s_ERR_FMT "Insufficient memory to add adapter!\n",
+ ioc->name);
+ pci_release_selected_regions(pdev, ioc->bars);
+ kfree(ioc);
+ return -ENOMEM;
+ }
+
dinitprintk(ioc, printk(MYIOC_s_INFO_FMT "facts @ %p, pfacts[0] @ %p\n",
ioc->name, &ioc->facts, &ioc->pfacts[0]));
@@ -1727,6 +1792,10 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
iounmap(ioc->memmap);
if (r != -5)
pci_release_selected_regions(pdev, ioc->bars);
+
+ destroy_workqueue(ioc->reset_work_q);
+ ioc->reset_work_q = NULL;
+
kfree(ioc);
pci_set_drvdata(pdev, NULL);
return r;
@@ -1759,6 +1828,10 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
}
#endif
+ if (!ioc->alt_ioc)
+ queue_delayed_work(ioc->reset_work_q, &ioc->fault_reset_work,
+ msecs_to_jiffies(MPT_POLLING_INTERVAL));
+
return 0;
}
@@ -1774,6 +1847,19 @@ mpt_detach(struct pci_dev *pdev)
MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
char pname[32];
u8 cb_idx;
+ unsigned long flags;
+ struct workqueue_struct *wq;
+
+ /*
+ * Stop polling ioc for fault condition
+ */
+ spin_lock_irqsave(&ioc->fault_reset_work_lock, flags);
+ wq = ioc->reset_work_q;
+ ioc->reset_work_q = NULL;
+ spin_unlock_irqrestore(&ioc->fault_reset_work_lock, flags);
+ cancel_delayed_work(&ioc->fault_reset_work);
+ destroy_workqueue(wq);
+
sprintf(pname, MPT_PROCFS_MPTBASEDIR "/%s/summary", ioc->name);
remove_proc_entry(pname, NULL);
@@ -7456,7 +7542,6 @@ EXPORT_SYMBOL(mpt_resume);
EXPORT_SYMBOL(mpt_suspend);
#endif
EXPORT_SYMBOL(ioc_list);
-EXPORT_SYMBOL(mpt_proc_root_dir);
EXPORT_SYMBOL(mpt_register);
EXPORT_SYMBOL(mpt_deregister);
EXPORT_SYMBOL(mpt_event_register);
diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index a8f617447d2..6adab648dbb 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -5,7 +5,7 @@
* LSIFC9xx/LSI409xx Fibre Channel
* running LSI Fusion MPT (Message Passing Technology) firmware.
*
- * Copyright (c) 1999-2007 LSI Corporation
+ * Copyright (c) 1999-2008 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
*/
@@ -73,11 +73,11 @@
#endif
#ifndef COPYRIGHT
-#define COPYRIGHT "Copyright (c) 1999-2007 " MODULEAUTHOR
+#define COPYRIGHT "Copyright (c) 1999-2008 " MODULEAUTHOR
#endif
-#define MPT_LINUX_VERSION_COMMON "3.04.06"
-#define MPT_LINUX_PACKAGE_NAME "@(#)mptlinux-3.04.06"
+#define MPT_LINUX_VERSION_COMMON "3.04.07"
+#define MPT_LINUX_PACKAGE_NAME "@(#)mptlinux-3.04.07"
#define WHAT_MAGIC_STRING "@" "(" "#" ")"
#define show_mptmod_ver(s,ver) \
@@ -176,6 +176,8 @@
/* debug print string length used for events and iocstatus */
# define EVENT_DESCR_STR_SZ 100
+#define MPT_POLLING_INTERVAL 1000 /* in milliseconds */
+
#ifdef __KERNEL__ /* { */
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
@@ -709,6 +711,12 @@ typedef struct _MPT_ADAPTER
struct workqueue_struct *fc_rescan_work_q;
struct scsi_cmnd **ScsiLookup;
spinlock_t scsi_lookup_lock;
+
+ char reset_work_q_name[KOBJ_NAME_LEN];
+ struct workqueue_struct *reset_work_q;
+ struct delayed_work fault_reset_work;
+ spinlock_t fault_reset_work_lock;
+
} MPT_ADAPTER;
/*
@@ -919,7 +927,6 @@ extern int mpt_raid_phys_disk_pg0(MPT_ADAPTER *ioc, u8 phys_disk_num, pRaidPhys
* Public data decl's...
*/
extern struct list_head ioc_list;
-extern struct proc_dir_entry *mpt_proc_root_dir;
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
#endif /* } __KERNEL__ */
diff --git a/drivers/message/fusion/mptctl.c b/drivers/message/fusion/mptctl.c
index c5946560c4e..a5920423e2b 100644
--- a/drivers/message/fusion/mptctl.c
+++ b/drivers/message/fusion/mptctl.c
@@ -4,7 +4,7 @@
* For use with LSI PCI chip/adapters
* running LSI Fusion MPT (Message Passing Technology) firmware.
*
- * Copyright (c) 1999-2007 LSI Corporation
+ * Copyright (c) 1999-2008 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
*/
@@ -66,7 +66,7 @@
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
-#define COPYRIGHT "Copyright (c) 1999-2007 LSI Corporation"
+#define COPYRIGHT "Copyright (c) 1999-2008 LSI Corporation"
#define MODULEAUTHOR "LSI Corporation"
#include "mptbase.h"
#include "mptctl.h"
diff --git a/drivers/message/fusion/mptctl.h b/drivers/message/fusion/mptctl.h
index 2c1890127e1..d564cc9ada6 100644
--- a/drivers/message/fusion/mptctl.h
+++ b/drivers/message/fusion/mptctl.h
@@ -5,7 +5,7 @@
* LSIFC9xx/LSI409xx Fibre Channel
* running LSI Fusion MPT (Message Passing Technology) firmware.
*
- * Copyright (c) 1999-2007 LSI Corporation
+ * Copyright (c) 1999-2008 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
*/
diff --git a/drivers/message/fusion/mptdebug.h b/drivers/message/fusion/mptdebug.h
index ffdb0a6191b..510b9f49209 100644
--- a/drivers/message/fusion/mptdebug.h
+++ b/drivers/message/fusion/mptdebug.h
@@ -3,7 +3,7 @@
* For use with LSI PCI chip/adapter(s)
* running LSI Fusion MPT (Message Passing Technology) firmware.
*
- * Copyright (c) 1999-2007 LSI Corporation
+ * Copyright (c) 1999-2008 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
*/
diff --git a/drivers/message/fusion/mptfc.c b/drivers/message/fusion/mptfc.c
index 1e24ab4ac38..fc31ca6829d 100644
--- a/drivers/message/fusion/mptfc.c
+++ b/drivers/message/fusion/mptfc.c
@@ -3,7 +3,7 @@
* For use with LSI PCI chip/adapter(s)
* running LSI Fusion MPT (Message Passing Technology) firmware.
*
- * Copyright (c) 1999-2007 LSI Corporation
+ * Copyright (c) 1999-2008 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
*/
diff --git a/drivers/message/fusion/mptlan.c b/drivers/message/fusion/mptlan.c
index 7950fc678ed..d709d92b7b3 100644
--- a/drivers/message/fusion/mptlan.c
+++ b/drivers/message/fusion/mptlan.c
@@ -4,7 +4,7 @@
* For use with LSI Fibre Channel PCI chip/adapters
* running LSI Fusion MPT (Message Passing Technology) firmware.
*
- * Copyright (c) 2000-2007 LSI Corporation
+ * Copyright (c) 2000-2008 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
*/
diff --git a/drivers/message/fusion/mptlan.h b/drivers/message/fusion/mptlan.h
index bafb67fc818..33927ee7dc3 100644
--- a/drivers/message/fusion/mptlan.h
+++ b/drivers/message/fusion/mptlan.h
@@ -4,7 +4,7 @@
* For use with LSI Fibre Channel PCI chip/adapters
* running LSI Fusion MPT (Message Passing Technology) firmware.
*
- * Copyright (c) 2000-2007 LSI Corporation
+ * Copyright (c) 2000-2008 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
*/
diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 4d492ba232b..b1147aa7afd 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -3,7 +3,7 @@
* For use with LSI PCI chip/adapter(s)
* running LSI Fusion MPT (Message Passing Technology) firmware.
*
- * Copyright (c) 1999-2007 LSI Corporation
+ * Copyright (c) 1999-2008 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
diff --git a/drivers/message/fusion/mptsas.h b/drivers/message/fusion/mptsas.h
index 7c150f50629..2b544e0877e 100644
--- a/drivers/message/fusion/mptsas.h
+++ b/drivers/message/fusion/mptsas.h
@@ -5,7 +5,7 @@
* LSIFC9xx/LSI409xx Fibre Channel
* running LSI MPT (Message Passing Technology) firmware.
*
- * Copyright (c) 1999-2007 LSI Corporation
+ * Copyright (c) 1999-2008 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
*/
diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c
index c68ef00c2f9..d142b6b4b97 100644
--- a/drivers/message/fusion/mptscsih.c
+++ b/drivers/message/fusion/mptscsih.c
@@ -3,7 +3,7 @@
* For use with LSI PCI chip/adapter(s)
* running LSI Fusion MPT (Message Passing Technology) firmware.
*
- * Copyright (c) 1999-2007 LSI Corporation
+ * Copyright (c) 1999-2008 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
*/
diff --git a/drivers/message/fusion/mptscsih.h b/drivers/message/fusion/mptscsih.h
index 7ea7da0e090..319aa303337 100644
--- a/drivers/message/fusion/mptscsih.h
+++ b/drivers/message/fusion/mptscsih.h
@@ -5,7 +5,7 @@
* LSIFC9xx/LSI409xx Fibre Channel
* running LSI Fusion MPT (Message Passing Technology) firmware.
*
- * Copyright (c) 1999-2007 LSI Corporation
+ * Copyright (c) 1999-2008 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
*/
diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c
index 1effca4e40e..61620144e49 100644
--- a/drivers/message/fusion/mptspi.c
+++ b/drivers/message/fusion/mptspi.c
@@ -3,7 +3,7 @@
* For use with LSI PCI chip/adapter(s)
* running LSI Fusion MPT (Message Passing Technology) firmware.
*
- * Copyright (c) 1999-2007 LSI Corporation
+ * Copyright (c) 1999-2008 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
*/
@@ -447,6 +447,7 @@ static int mptspi_target_alloc(struct scsi_target *starget)
spi_max_offset(starget) = ioc->spi_data.maxSyncOffset;
spi_offset(starget) = 0;
+ spi_period(starget) = 0xFF;
mptspi_write_width(starget, 0);
return 0;
diff --git a/drivers/s390/scsi/Makefile b/drivers/s390/scsi/Makefile
index d6a78f1a2f1..cb301cc6178 100644
--- a/drivers/s390/scsi/Makefile
+++ b/drivers/s390/scsi/Makefile
@@ -3,7 +3,6 @@
#
zfcp-objs := zfcp_aux.o zfcp_ccw.o zfcp_scsi.o zfcp_erp.o zfcp_qdio.o \
- zfcp_fsf.o zfcp_dbf.o zfcp_sysfs_adapter.o zfcp_sysfs_port.o \
- zfcp_sysfs_unit.o zfcp_sysfs_driver.o
+ zfcp_fsf.o zfcp_dbf.o zfcp_sysfs.o zfcp_fc.o zfcp_cfdc.o
obj-$(CONFIG_ZFCP) += zfcp.o
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 8c7e2b778ef..90abfd06ed5 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -1,22 +1,9 @@
/*
- * This file is part of the zfcp device driver for
- * FCP adapters for IBM System z9 and zSeries.
+ * zfcp device driver
*
- * (C) Copyright IBM Corp. 2002, 2006
+ * Module interface and handling of zfcp data structures.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Copyright IBM Corporation 2002, 2008
*/
/*
@@ -31,93 +18,25 @@
* Maxim Shchetynin
* Volker Sameske
* Ralph Wuerthner
+ * Michael Loehr
+ * Swen Schillig
+ * Christof Schmitt
+ * Martin Petermann
+ * Sven Schuetz
*/
+#include <linux/miscdevice.h>
#include "zfcp_ext.h"
-/* accumulated log level (module parameter) */
-static u32 loglevel = ZFCP_LOG_LEVEL_DEFAULTS;
static char *device;
-/*********************** FUNCTION PROTOTYPES *********************************/
-
-/* written against the module interface */
-static int __init zfcp_module_init(void);
-
-/* FCP related */
-static void zfcp_ns_gid_pn_handler(unsigned long);
-
-/* miscellaneous */
-static int zfcp_sg_list_alloc(struct zfcp_sg_list *, size_t);
-static void zfcp_sg_list_free(struct zfcp_sg_list *);
-static int zfcp_sg_list_copy_from_user(struct zfcp_sg_list *,
- void __user *, size_t);
-static int zfcp_sg_list_copy_to_user(void __user *,
- struct zfcp_sg_list *, size_t);
-static long zfcp_cfdc_dev_ioctl(struct file *, unsigned int, unsigned long);
-
-#define ZFCP_CFDC_IOC_MAGIC 0xDD
-#define ZFCP_CFDC_IOC \
- _IOWR(ZFCP_CFDC_IOC_MAGIC, 0, struct zfcp_cfdc_sense_data)
-
-
-static const struct file_operations zfcp_cfdc_fops = {
- .unlocked_ioctl = zfcp_cfdc_dev_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = zfcp_cfdc_dev_ioctl
-#endif
-};
-
-static struct miscdevice zfcp_cfdc_misc = {
- .minor = ZFCP_CFDC_DEV_MINOR,
- .name = ZFCP_CFDC_DEV_NAME,
- .fops = &zfcp_cfdc_fops
-};
-
-/*********************** KERNEL/MODULE PARAMETERS ***************************/
-
-/* declare driver module init/cleanup functions */
-module_init(zfcp_module_init);
MODULE_AUTHOR("IBM Deutschland Entwicklung GmbH - linux390@de.ibm.com");
-MODULE_DESCRIPTION
- ("FCP (SCSI over Fibre Channel) HBA driver for IBM System z9 and zSeries");
+MODULE_DESCRIPTION("FCP HBA driver");
MODULE_LICENSE("GPL");
module_param(device, charp, 0400);
MODULE_PARM_DESC(device, "specify initial device");
-module_param(loglevel, uint, 0400);
-MODULE_PARM_DESC(loglevel,
- "log levels, 8 nibbles: "
- "FC ERP QDIO CIO Config FSF SCSI Other, "
- "levels: 0=none 1=normal 2=devel 3=trace");
-
-/****************************************************************/
-/************** Functions without logging ***********************/
-/****************************************************************/
-
-void
-_zfcp_hex_dump(char *addr, int count)
-{
- int i;
- for (i = 0; i < count; i++) {
- printk("%02x", addr[i]);
- if ((i % 4) == 3)
- printk(" ");
- if ((i % 32) == 31)
- printk("\n");
- }
- if (((i-1) % 32) != 31)
- printk("\n");
-}
-
-
-/****************************************************************/
-/****** Functions to handle the request ID hash table ********/
-/****************************************************************/
-
-#define ZFCP_LOG_AREA ZFCP_LOG_AREA_FSF
-
static int zfcp_reqlist_alloc(struct zfcp_adapter *adapter)
{
int idx;
@@ -132,11 +51,12 @@ static int zfcp_reqlist_alloc(struct zfcp_adapter *adapter)
return 0;
}
-static void zfcp_reqlist_free(struct zfcp_adapter *adapter)
-{
- kfree(adapter->req_list);
-}
-
+/**
+ * zfcp_reqlist_isempty - is the request list empty
+ * @adapter: pointer to struct zfcp_adapter
+ *
+ * Returns: true if list is empty, false otherwise
+ */
int zfcp_reqlist_isempty(struct zfcp_adapter *adapter)
{
unsigned int idx;
@@ -147,62 +67,58 @@ int zfcp_reqlist_isempty(struct zfcp_adapter *adapter)
return 1;
}
-#undef ZFCP_LOG_AREA
-
-/****************************************************************/
-/************** Uncategorised Functions *************************/
-/****************************************************************/
-
-#define ZFCP_LOG_AREA ZFCP_LOG_AREA_OTHER
-
-/**
- * zfcp_device_setup - setup function
- * @str: pointer to parameter string
- *
- * Parse "device=..." parameter string.
- */
-static int __init
-zfcp_device_setup(char *devstr)
+static int __init zfcp_device_setup(char *devstr)
{
- char *tmp, *str;
- size_t len;
+ char *token;
+ char *str;
if (!devstr)
return 0;
- len = strlen(devstr) + 1;
- str = kmalloc(len, GFP_KERNEL);
+ /* duplicate devstr and keep the original for sysfs presentation*/
+ str = kmalloc(strlen(devstr) + 1, GFP_KERNEL);
if (!str)
- goto err_out;
- memcpy(str, devstr, len);
+ return 0;
- tmp = strchr(str, ',');
- if (!tmp)
- goto err_out;
- *tmp++ = '\0';
- strncpy(zfcp_data.init_busid, str, BUS_ID_SIZE);
- zfcp_data.init_busid[BUS_ID_SIZE-1] = '\0';
+ strcpy(str, devstr);
- zfcp_data.init_wwpn = simple_strtoull(tmp, &tmp, 0);
- if (*tmp++ != ',')
+ token = strsep(&str, ",");
+ if (!token || strlen(token) >= BUS_ID_SIZE)
goto err_out;
- if (*tmp == '\0')
+ strncpy(zfcp_data.init_busid, token, BUS_ID_SIZE);
+
+ token = strsep(&str, ",");
+ if (!token || strict_strtoull(token, 0, &zfcp_data.init_wwpn))
goto err_out;
- zfcp_data.init_fcp_lun = simple_strtoull(tmp, &tmp, 0);
- if (*tmp != '\0')
+ token = strsep(&str, ",");
+ if (!token || strict_strtoull(token, 0, &zfcp_data.init_fcp_lun))
goto err_out;
+
kfree(str);
return 1;
err_out:
- ZFCP_LOG_NORMAL("Parse error for device parameter string %s\n", str);
kfree(str);
+ pr_err("zfcp: Parse error for device parameter string %s, "
+ "device not attached.\n", devstr);
return 0;
}
-static void __init
-zfcp_init_device_configure(void)
+static struct zfcp_adapter *zfcp_get_adapter_by_busid(char *bus_id)
+{
+ struct zfcp_adapter *adapter;
+
+ list_for_each_entry(adapter, &zfcp_data.adapter_list_head, list)
+ if ((strncmp(bus_id, adapter->ccw_device->dev.bus_id,
+ BUS_ID_SIZE) == 0) &&
+ !(atomic_read(&adapter->status) &
+ ZFCP_STATUS_COMMON_REMOVE))
+ return adapter;
+ return NULL;
+}
+
+static void __init zfcp_init_device_configure(void)
{
struct zfcp_adapter *adapter;
struct zfcp_port *port;
@@ -215,101 +131,75 @@ zfcp_init_device_configure(void)
zfcp_adapter_get(adapter);
read_unlock_irq(&zfcp_data.config_lock);
- if (adapter == NULL)
+ if (!adapter)
goto out_adapter;
port = zfcp_port_enqueue(adapter, zfcp_data.init_wwpn, 0, 0);
- if (!port)
+ if (IS_ERR(port))
goto out_port;
unit = zfcp_unit_enqueue(port, zfcp_data.init_fcp_lun);
- if (!unit)
+ if (IS_ERR(unit))
goto out_unit;
up(&zfcp_data.config_sema);
ccw_device_set_online(adapter->ccw_device);
zfcp_erp_wait(adapter);
down(&zfcp_data.config_sema);
zfcp_unit_put(unit);
- out_unit:
+out_unit:
zfcp_port_put(port);
- out_port:
+out_port:
zfcp_adapter_put(adapter);
- out_adapter:
+out_adapter:
up(&zfcp_data.config_sema);
return;
}
-static int calc_alignment(int size)
+static struct kmem_cache *zfcp_cache_create(int size, char *name)
{
int align = 1;
-
- if (!size)
- return 0;
-
while ((size - align) > 0)
align <<= 1;
-
- return align;
+ return kmem_cache_create(name , size, align, 0, NULL);
}
-static int __init
-zfcp_module_init(void)
+static int __init zfcp_module_init(void)
{
int retval = -ENOMEM;
- int size, align;
- size = sizeof(struct zfcp_fsf_req_qtcb);
- align = calc_alignment(size);
- zfcp_data.fsf_req_qtcb_cache =
- kmem_cache_create("zfcp_fsf", size, align, 0, NULL);
+ zfcp_data.fsf_req_qtcb_cache = zfcp_cache_create(
+ sizeof(struct zfcp_fsf_req_qtcb), "zfcp_fsf");
if (!zfcp_data.fsf_req_qtcb_cache)
goto out;
- size = sizeof(struct fsf_status_read_buffer);
- align = calc_alignment(size);
- zfcp_data.sr_buffer_cache =
- kmem_cache_create("zfcp_sr", size, align, 0, NULL);
+ zfcp_data.sr_buffer_cache = zfcp_cache_create(
+ sizeof(struct fsf_status_read_buffer), "zfcp_sr");
if (!zfcp_data.sr_buffer_cache)
goto out_sr_cache;
- size = sizeof(struct zfcp_gid_pn_data);
- align = calc_alignment(size);
- zfcp_data.gid_pn_cache =
- kmem_cache_create("zfcp_gid", size, align, 0, NULL);
+ zfcp_data.gid_pn_cache = zfcp_cache_create(
+ sizeof(struct zfcp_gid_pn_data), "zfcp_gid");
if (!zfcp_data.gid_pn_cache)
goto out_gid_cache;
- atomic_set(&zfcp_data.loglevel, loglevel);
-
- /* initialize adapter list */
INIT_LIST_HEAD(&zfcp_data.adapter_list_head);
-
- /* initialize adapters to be removed list head */
INIT_LIST_HEAD(&zfcp_data.adapter_remove_lh);
+ sema_init(&zfcp_data.config_sema, 1);
+ rwlock_init(&zfcp_data.config_lock);
+
zfcp_data.scsi_transport_template =
fc_attach_transport(&zfcp_transport_functions);
if (!zfcp_data.scsi_transport_template)
goto out_transport;
retval = misc_register(&zfcp_cfdc_misc);
- if (retval != 0) {
- ZFCP_LOG_INFO("registration of misc device "
- "zfcp_cfdc failed\n");
+ if (retval) {
+ pr_err("zfcp: registration of misc device zfcp_cfdc failed\n");
goto out_misc;
}
- ZFCP_LOG_TRACE("major/minor for zfcp_cfdc: %d/%d\n",
- ZFCP_CFDC_DEV_MAJOR, zfcp_cfdc_misc.minor);
-
- /* Initialise proc semaphores */
- sema_init(&zfcp_data.config_sema, 1);
-
- /* initialise configuration rw lock */
- rwlock_init(&zfcp_data.config_lock);
-
- /* setup dynamic I/O */
retval = zfcp_ccw_register();
if (retval) {
- ZFCP_LOG_NORMAL("registration with common I/O layer failed\n");
+ pr_err("zfcp: Registration with common I/O layer failed.\n");
goto out_ccw_register;
}
@@ -318,527 +208,88 @@ zfcp_module_init(void)
goto out;
- out_ccw_register:
+out_ccw_register:
misc_deregister(&zfcp_cfdc_misc);
- out_misc:
+out_misc:
fc_release_transport(zfcp_data.scsi_transport_template);
- out_transport:
+out_transport:
kmem_cache_destroy(zfcp_data.gid_pn_cache);
- out_gid_cache:
+out_gid_cache:
kmem_cache_destroy(zfcp_data.sr_buffer_cache);
- out_sr_cache:
+out_sr_cache:
kmem_cache_destroy(zfcp_data.fsf_req_qtcb_cache);
- out:
+out:
return retval;
}
-/*
- * function: zfcp_cfdc_dev_ioctl
- *
- * purpose: Handle control file upload/download transaction via IOCTL
- * interface
- *
- * returns: 0 - Operation completed successfuly
- * -ENOTTY - Unknown IOCTL command
- * -EINVAL - Invalid sense data record
- * -ENXIO - The FCP adapter is not available
- * -EOPNOTSUPP - The FCP adapter does not have CFDC support
- * -ENOMEM - Insufficient memory
- * -EFAULT - User space memory I/O operation fault
- * -EPERM - Cannot create or queue FSF request or create SBALs
- * -ERESTARTSYS- Received signal (is mapped to EAGAIN by VFS)
- */
-static long
-zfcp_cfdc_dev_ioctl(struct file *file, unsigned int command,
- unsigned long buffer)
-{
- struct zfcp_cfdc_sense_data *sense_data, __user *sense_data_user;
- struct zfcp_adapter *adapter = NULL;
- struct zfcp_fsf_req *fsf_req = NULL;
- struct zfcp_sg_list *sg_list = NULL;
- u32 fsf_command, option;
- char *bus_id = NULL;
- int retval = 0;
-
- sense_data = kmalloc(sizeof(struct zfcp_cfdc_sense_data), GFP_KERNEL);
- if (sense_data == NULL) {
- retval = -ENOMEM;
- goto out;
- }
-
- sg_list = kzalloc(sizeof(struct zfcp_sg_list), GFP_KERNEL);
- if (sg_list == NULL) {
- retval = -ENOMEM;
- goto out;
- }
-
- if (command != ZFCP_CFDC_IOC) {
- ZFCP_LOG_INFO("IOC request code 0x%x invalid\n", command);
- retval = -ENOTTY;
- goto out;
- }
-
- if ((sense_data_user = (void __user *) buffer) == NULL) {
- ZFCP_LOG_INFO("sense data record is required\n");
- retval = -EINVAL;
- goto out;
- }
-
- retval = copy_from_user(sense_data, sense_data_user,
- sizeof(struct zfcp_cfdc_sense_data));
- if (retval) {
- retval = -EFAULT;
- goto out;
- }
-
- if (sense_data->signature != ZFCP_CFDC_SIGNATURE) {
- ZFCP_LOG_INFO("invalid sense data request signature 0x%08x\n",
- ZFCP_CFDC_SIGNATURE);
- retval = -EINVAL;
- goto out;
- }
-
- switch (sense_data->command) {
-
- case ZFCP_CFDC_CMND_DOWNLOAD_NORMAL:
- fsf_command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
- option = FSF_CFDC_OPTION_NORMAL_MODE;
- break;
-
- case ZFCP_CFDC_CMND_DOWNLOAD_FORCE:
- fsf_command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
- option = FSF_CFDC_OPTION_FORCE;
- break;
-
- case ZFCP_CFDC_CMND_FULL_ACCESS:
- fsf_command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
- option = FSF_CFDC_OPTION_FULL_ACCESS;
- break;
-
- case ZFCP_CFDC_CMND_RESTRICTED_ACCESS:
- fsf_command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
- option = FSF_CFDC_OPTION_RESTRICTED_ACCESS;
- break;
-
- case ZFCP_CFDC_CMND_UPLOAD:
- fsf_command = FSF_QTCB_UPLOAD_CONTROL_FILE;
- option = 0;
- break;
-
- default:
- ZFCP_LOG_INFO("invalid command code 0x%08x\n",
- sense_data->command);
- retval = -EINVAL;
- goto out;
- }
-
- bus_id = kmalloc(BUS_ID_SIZE, GFP_KERNEL);
- if (bus_id == NULL) {
- retval = -ENOMEM;
- goto out;
- }
- snprintf(bus_id, BUS_ID_SIZE, "%d.%d.%04x",
- (sense_data->devno >> 24),
- (sense_data->devno >> 16) & 0xFF,
- (sense_data->devno & 0xFFFF));
-
- read_lock_irq(&zfcp_data.config_lock);
- adapter = zfcp_get_adapter_by_busid(bus_id);
- if (adapter)
- zfcp_adapter_get(adapter);
- read_unlock_irq(&zfcp_data.config_lock);
-
- kfree(bus_id);
-
- if (adapter == NULL) {
- ZFCP_LOG_INFO("invalid adapter\n");
- retval = -ENXIO;
- goto out;
- }
-
- if (sense_data->command & ZFCP_CFDC_WITH_CONTROL_FILE) {
- retval = zfcp_sg_list_alloc(sg_list,
- ZFCP_CFDC_MAX_CONTROL_FILE_SIZE);
- if (retval) {
- retval = -ENOMEM;
- goto out;
- }
- }
-
- if ((sense_data->command & ZFCP_CFDC_DOWNLOAD) &&
- (sense_data->command & ZFCP_CFDC_WITH_CONTROL_FILE)) {
- retval = zfcp_sg_list_copy_from_user(
- sg_list, &sense_data_user->control_file,
- ZFCP_CFDC_MAX_CONTROL_FILE_SIZE);
- if (retval) {
- retval = -EFAULT;
- goto out;
- }
- }
-
- retval = zfcp_fsf_control_file(adapter, &fsf_req, fsf_command,
- option, sg_list);
- if (retval)
- goto out;
-
- if ((fsf_req->qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
- (fsf_req->qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
- retval = -ENXIO;
- goto out;
- }
-
- sense_data->fsf_status = fsf_req->qtcb->header.fsf_status;
- memcpy(&sense_data->fsf_status_qual,
- &fsf_req->qtcb->header.fsf_status_qual,
- sizeof(union fsf_status_qual));
- memcpy(&sense_data->payloads, &fsf_req->qtcb->bottom.support.els, 256);
-
- retval = copy_to_user(sense_data_user, sense_data,
- sizeof(struct zfcp_cfdc_sense_data));
- if (retval) {
- retval = -EFAULT;
- goto out;
- }
-
- if (sense_data->command & ZFCP_CFDC_UPLOAD) {
- retval = zfcp_sg_list_copy_to_user(
- &sense_data_user->control_file, sg_list,
- ZFCP_CFDC_MAX_CONTROL_FILE_SIZE);
- if (retval) {
- retval = -EFAULT;
- goto out;
- }
- }
-
- out:
- if (fsf_req != NULL)
- zfcp_fsf_req_free(fsf_req);
-
- if ((adapter != NULL) && (retval != -ENXIO))
- zfcp_adapter_put(adapter);
-
- if (sg_list != NULL) {
- zfcp_sg_list_free(sg_list);
- kfree(sg_list);
- }
-
- kfree(sense_data);
-
- return retval;
-}
-
-
-/**
- * zfcp_sg_list_alloc - create a scatter-gather list of the specified size
- * @sg_list: structure describing a scatter gather list
- * @size: size of scatter-gather list
- * Return: 0 on success, else -ENOMEM
- *
- * In sg_list->sg a pointer to the created scatter-gather list is returned,
- * or NULL if we run out of memory. sg_list->count specifies the number of
- * elements of the scatter-gather list. The maximum size of a single element
- * in the scatter-gather list is PAGE_SIZE.
- */
-static int
-zfcp_sg_list_alloc(struct zfcp_sg_list *sg_list, size_t size)
-{
- struct scatterlist *sg;
- unsigned int i;
- int retval = 0;
- void *address;
-
- BUG_ON(sg_list == NULL);
-
- sg_list->count = size >> PAGE_SHIFT;
- if (size & ~PAGE_MASK)
- sg_list->count++;
- sg_list->sg = kcalloc(sg_list->count, sizeof(struct scatterlist),
- GFP_KERNEL);
- if (sg_list->sg == NULL) {
- sg_list->count = 0;
- retval = -ENOMEM;
- goto out;
- }
- sg_init_table(sg_list->sg, sg_list->count);
-
- for (i = 0, sg = sg_list->sg; i < sg_list->count; i++, sg++) {
- address = (void *) get_zeroed_page(GFP_KERNEL);
- if (address == NULL) {
- sg_list->count = i;
- zfcp_sg_list_free(sg_list);
- retval = -ENOMEM;
- goto out;
- }
- zfcp_address_to_sg(address, sg, min(size, PAGE_SIZE));
- size -= sg->length;
- }
-
- out:
- return retval;
-}
-
-
-/**
- * zfcp_sg_list_free - free memory of a scatter-gather list
- * @sg_list: structure describing a scatter-gather list
- *
- * Memory for each element in the scatter-gather list is freed.
- * Finally sg_list->sg is freed itself and sg_list->count is reset.
- */
-static void
-zfcp_sg_list_free(struct zfcp_sg_list *sg_list)
-{
- struct scatterlist *sg;
- unsigned int i;
-
- BUG_ON(sg_list == NULL);
-
- for (i = 0, sg = sg_list->sg; i < sg_list->count; i++, sg++)
- free_page((unsigned long) zfcp_sg_to_address(sg));
-
- sg_list->count = 0;
- kfree(sg_list->sg);
-}
-
-/**
- * zfcp_sg_size - determine size of a scatter-gather list
- * @sg: array of (struct scatterlist)
- * @sg_count: elements in array
- * Return: size of entire scatter-gather list
- */
-static size_t zfcp_sg_size(struct scatterlist *sg, unsigned int sg_count)
-{
- unsigned int i;
- struct scatterlist *p;
- size_t size;
-
- size = 0;
- for (i = 0, p = sg; i < sg_count; i++, p++) {
- BUG_ON(p == NULL);
- size += p->length;
- }
-
- return size;
-}
-
-
-/**
- * zfcp_sg_list_copy_from_user -copy data from user space to scatter-gather list
- * @sg_list: structure describing a scatter-gather list
- * @user_buffer: pointer to buffer in user space
- * @size: number of bytes to be copied
- * Return: 0 on success, -EFAULT if copy_from_user fails.
- */
-static int
-zfcp_sg_list_copy_from_user(struct zfcp_sg_list *sg_list,
- void __user *user_buffer,
- size_t size)
-{
- struct scatterlist *sg;
- unsigned int length;
- void *zfcp_buffer;
- int retval = 0;
-
- BUG_ON(sg_list == NULL);
-
- if (zfcp_sg_size(sg_list->sg, sg_list->count) < size)
- return -EFAULT;
-
- for (sg = sg_list->sg; size > 0; sg++) {
- length = min((unsigned int)size, sg->length);
- zfcp_buffer = zfcp_sg_to_address(sg);
- if (copy_from_user(zfcp_buffer, user_buffer, length)) {
- retval = -EFAULT;
- goto out;
- }
- user_buffer += length;
- size -= length;
- }
-
- out:
- return retval;
-}
-
-
-/**
- * zfcp_sg_list_copy_to_user - copy data from scatter-gather list to user space
- * @user_buffer: pointer to buffer in user space
- * @sg_list: structure describing a scatter-gather list
- * @size: number of bytes to be copied
- * Return: 0 on success, -EFAULT if copy_to_user fails
- */
-static int
-zfcp_sg_list_copy_to_user(void __user *user_buffer,
- struct zfcp_sg_list *sg_list,
- size_t size)
-{
- struct scatterlist *sg;
- unsigned int length;
- void *zfcp_buffer;
- int retval = 0;
-
- BUG_ON(sg_list == NULL);
-
- if (zfcp_sg_size(sg_list->sg, sg_list->count) < size)
- return -EFAULT;
-
- for (sg = sg_list->sg; size > 0; sg++) {
- length = min((unsigned int) size, sg->length);
- zfcp_buffer = zfcp_sg_to_address(sg);
- if (copy_to_user(user_buffer, zfcp_buffer, length)) {
- retval = -EFAULT;
- goto out;
- }
- user_buffer += length;
- size -= length;
- }
-
- out:
- return retval;
-}
-
-
-#undef ZFCP_LOG_AREA
-
-/****************************************************************/
-/****** Functions for configuration/set-up of structures ********/
-/****************************************************************/
-
-#define ZFCP_LOG_AREA ZFCP_LOG_AREA_CONFIG
+module_init(zfcp_module_init);
/**
* zfcp_get_unit_by_lun - find unit in unit list of port by FCP LUN
* @port: pointer to port to search for unit
* @fcp_lun: FCP LUN to search for
- * Traverse list of all units of a port and return pointer to a unit
- * with the given FCP LUN.
+ *
+ * Returns: pointer to zfcp_unit or NULL
*/
-struct zfcp_unit *
-zfcp_get_unit_by_lun(struct zfcp_port *port, fcp_lun_t fcp_lun)
+struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *port,
+ fcp_lun_t fcp_lun)
{
struct zfcp_unit *unit;
- int found = 0;
- list_for_each_entry(unit, &port->unit_list_head, list) {
+ list_for_each_entry(unit, &port->unit_list_head, list)
if ((unit->fcp_lun == fcp_lun) &&
- !atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status))
- {
- found = 1;
- break;
- }
- }
- return found ? unit : NULL;
+ !(atomic_read(&unit->status) & ZFCP_STATUS_COMMON_REMOVE))
+ return unit;
+ return NULL;
}
/**
* zfcp_get_port_by_wwpn - find port in port list of adapter by wwpn
* @adapter: pointer to adapter to search for port
* @wwpn: wwpn to search for
- * Traverse list of all ports of an adapter and return pointer to a port
- * with the given wwpn.
- */
-struct zfcp_port *
-zfcp_get_port_by_wwpn(struct zfcp_adapter *adapter, wwn_t wwpn)
-{
- struct zfcp_port *port;
- int found = 0;
-
- list_for_each_entry(port, &adapter->port_list_head, list) {
- if ((port->wwpn == wwpn) &&
- !(atomic_read(&port->status) &
- (ZFCP_STATUS_PORT_NO_WWPN | ZFCP_STATUS_COMMON_REMOVE))) {
- found = 1;
- break;
- }
- }
- return found ? port : NULL;
-}
-
-/**
- * zfcp_get_port_by_did - find port in port list of adapter by d_id
- * @adapter: pointer to adapter to search for port
- * @d_id: d_id to search for
- * Traverse list of all ports of an adapter and return pointer to a port
- * with the given d_id.
+ *
+ * Returns: pointer to zfcp_port or NULL
*/
-struct zfcp_port *
-zfcp_get_port_by_did(struct zfcp_adapter *adapter, u32 d_id)
+struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *adapter,
+ wwn_t wwpn)
{
struct zfcp_port *port;
- int found = 0;
- list_for_each_entry(port, &adapter->port_list_head, list) {
- if ((port->d_id == d_id) &&
- !atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status))
- {
- found = 1;
- break;
- }
- }
- return found ? port : NULL;
+ list_for_each_entry(port, &adapter->port_list_head, list)
+ if ((port->wwpn == wwpn) && !(atomic_read(&port->status) &
+ (ZFCP_STATUS_PORT_NO_WWPN | ZFCP_STATUS_COMMON_REMOVE)))
+ return port;
+ return NULL;
}
-/**
- * zfcp_get_adapter_by_busid - find adpater in adapter list by bus_id
- * @bus_id: bus_id to search for
- * Traverse list of all adapters and return pointer to an adapter
- * with the given bus_id.
- */
-struct zfcp_adapter *
-zfcp_get_adapter_by_busid(char *bus_id)
+static void zfcp_sysfs_unit_release(struct device *dev)
{
- struct zfcp_adapter *adapter;
- int found = 0;
-
- list_for_each_entry(adapter, &zfcp_data.adapter_list_head, list) {
- if ((strncmp(bus_id, zfcp_get_busid_by_adapter(adapter),
- BUS_ID_SIZE) == 0) &&
- !atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE,
- &adapter->status)){
- found = 1;
- break;
- }
- }
- return found ? adapter : NULL;
+ kfree(container_of(dev, struct zfcp_unit, sysfs_device));
}
/**
* zfcp_unit_enqueue - enqueue unit to unit list of a port.
* @port: pointer to port where unit is added
* @fcp_lun: FCP LUN of unit to be enqueued
- * Return: pointer to enqueued unit on success, NULL on error
+ * Returns: pointer to enqueued unit on success, ERR_PTR on error
* Locks: config_sema must be held to serialize changes to the unit list
*
* Sets up some unit internal structures and creates sysfs entry.
*/
-struct zfcp_unit *
-zfcp_unit_enqueue(struct zfcp_port *port, fcp_lun_t fcp_lun)
+struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, fcp_lun_t fcp_lun)
{
struct zfcp_unit *unit;
- /*
- * check that there is no unit with this FCP_LUN already in list
- * and enqueue it.
- * Note: Unlike for the adapter and the port, this is an error
- */
- read_lock_irq(&zfcp_data.config_lock);
- unit = zfcp_get_unit_by_lun(port, fcp_lun);
- read_unlock_irq(&zfcp_data.config_lock);
- if (unit)
- return NULL;
-
- unit = kzalloc(sizeof (struct zfcp_unit), GFP_KERNEL);
+ unit = kzalloc(sizeof(struct zfcp_unit), GFP_KERNEL);
if (!unit)
- return NULL;
+ return ERR_PTR(-ENOMEM);
- /* initialise reference count stuff */
atomic_set(&unit->refcount, 0);
init_waitqueue_head(&unit->remove_wq);
unit->port = port;
unit->fcp_lun = fcp_lun;
- /* setup for sysfs registration */
snprintf(unit->sysfs_device.bus_id, BUS_ID_SIZE, "0x%016llx", fcp_lun);
unit->sysfs_device.parent = &port->sysfs_device;
unit->sysfs_device.release = zfcp_sysfs_unit_release;
@@ -847,14 +298,28 @@ zfcp_unit_enqueue(struct zfcp_port *port, fcp_lun_t fcp_lun)
/* mark unit unusable as long as sysfs registration is not complete */
atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status);
- if (device_register(&unit->sysfs_device)) {
- kfree(unit);
- return NULL;
+ spin_lock_init(&unit->latencies.lock);
+ unit->latencies.write.channel.min = 0xFFFFFFFF;
+ unit->latencies.write.fabric.min = 0xFFFFFFFF;
+ unit->latencies.read.channel.min = 0xFFFFFFFF;
+ unit->latencies.read.fabric.min = 0xFFFFFFFF;
+ unit->latencies.cmd.channel.min = 0xFFFFFFFF;
+ unit->latencies.cmd.fabric.min = 0xFFFFFFFF;
+
+ read_lock_irq(&zfcp_data.config_lock);
+ if (zfcp_get_unit_by_lun(port, fcp_lun)) {
+ read_unlock_irq(&zfcp_data.config_lock);
+ goto err_out_free;
}
+ read_unlock_irq(&zfcp_data.config_lock);
- if (zfcp_sysfs_unit_create_files(&unit->sysfs_device)) {
+ if (device_register(&unit->sysfs_device))
+ goto err_out_free;
+
+ if (sysfs_create_group(&unit->sysfs_device.kobj,
+ &zfcp_sysfs_unit_attrs)) {
device_unregister(&unit->sysfs_device);
- return NULL;
+ return ERR_PTR(-EIO);
}
zfcp_unit_get(unit);
@@ -864,16 +329,27 @@ zfcp_unit_enqueue(struct zfcp_port *port, fcp_lun_t fcp_lun)
list_add_tail(&unit->list, &port->unit_list_head);
atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status);
atomic_set_mask(ZFCP_STATUS_COMMON_RUNNING, &unit->status);
+
write_unlock_irq(&zfcp_data.config_lock);
port->units++;
zfcp_port_get(port);
return unit;
+
+err_out_free:
+ kfree(unit);
+ return ERR_PTR(-EINVAL);
}
-void
-zfcp_unit_dequeue(struct zfcp_unit *unit)
+/**
+ * zfcp_unit_dequeue - dequeue unit
+ * @unit: pointer to zfcp_unit
+ *
+ * waits until all work is done on unit and removes it then from the unit->list
+ * of the associated port.
+ */
+void zfcp_unit_dequeue(struct zfcp_unit *unit)
{
zfcp_unit_wait(unit);
write_lock_irq(&zfcp_data.config_lock);
@@ -881,68 +357,51 @@ zfcp_unit_dequeue(struct zfcp_unit *unit)
write_unlock_irq(&zfcp_data.config_lock);
unit->port->units--;
zfcp_port_put(unit->port);
- zfcp_sysfs_unit_remove_files(&unit->sysfs_device);
+ sysfs_remove_group(&unit->sysfs_device.kobj, &zfcp_sysfs_unit_attrs);
device_unregister(&unit->sysfs_device);
}
-/*
- * Allocates a combined QTCB/fsf_req buffer for erp actions and fcp/SCSI
- * commands.
- * It also genrates fcp-nameserver request/response buffer and unsolicited
- * status read fsf_req buffers.
- *
- * locks: must only be called with zfcp_data.config_sema taken
- */
-static int
-zfcp_allocate_low_mem_buffers(struct zfcp_adapter *adapter)
+static int zfcp_allocate_low_mem_buffers(struct zfcp_adapter *adapter)
{
+ /* must only be called with zfcp_data.config_sema taken */
adapter->pool.fsf_req_erp =
- mempool_create_slab_pool(ZFCP_POOL_FSF_REQ_ERP_NR,
- zfcp_data.fsf_req_qtcb_cache);
+ mempool_create_slab_pool(1, zfcp_data.fsf_req_qtcb_cache);
if (!adapter->pool.fsf_req_erp)
return -ENOMEM;
adapter->pool.fsf_req_scsi =
- mempool_create_slab_pool(ZFCP_POOL_FSF_REQ_SCSI_NR,
- zfcp_data.fsf_req_qtcb_cache);
+ mempool_create_slab_pool(1, zfcp_data.fsf_req_qtcb_cache);
if (!adapter->pool.fsf_req_scsi)
return -ENOMEM;
adapter->pool.fsf_req_abort =
- mempool_create_slab_pool(ZFCP_POOL_FSF_REQ_ABORT_NR,
- zfcp_data.fsf_req_qtcb_cache);
+ mempool_create_slab_pool(1, zfcp_data.fsf_req_qtcb_cache);
if (!adapter->pool.fsf_req_abort)
return -ENOMEM;
adapter->pool.fsf_req_status_read =
- mempool_create_kmalloc_pool(ZFCP_POOL_STATUS_READ_NR,
+ mempool_create_kmalloc_pool(FSF_STATUS_READS_RECOM,
sizeof(struct zfcp_fsf_req));
if (!adapter->pool.fsf_req_status_read)
return -ENOMEM;
adapter->pool.data_status_read =
- mempool_create_slab_pool(ZFCP_POOL_STATUS_READ_NR,
+ mempool_create_slab_pool(FSF_STATUS_READS_RECOM,
zfcp_data.sr_buffer_cache);
if (!adapter->pool.data_status_read)
return -ENOMEM;
adapter->pool.data_gid_pn =
- mempool_create_slab_pool(ZFCP_POOL_DATA_GID_PN_NR,
- zfcp_data.gid_pn_cache);
+ mempool_create_slab_pool(1, zfcp_data.gid_pn_cache);
if (!adapter->pool.data_gid_pn)
return -ENOMEM;
return 0;
}
-/**
- * zfcp_free_low_mem_buffers - free memory pools of an adapter
- * @adapter: pointer to zfcp_adapter for which memory pools should be freed
- * locking: zfcp_data.config_sema must be held
- */
-static void
-zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter)
+static void zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter)
{
+ /* zfcp_data.config_sema must be held */
if (adapter->pool.fsf_req_erp)
mempool_destroy(adapter->pool.fsf_req_erp);
if (adapter->pool.fsf_req_scsi)
@@ -962,20 +421,61 @@ static void zfcp_dummy_release(struct device *dev)
return;
}
-/*
+/**
+ * zfcp_status_read_refill - refill the long running status_read_requests
+ * @adapter: ptr to struct zfcp_adapter for which the buffers should be refilled
+ *
+ * Returns: 0 on success, 1 otherwise
+ *
+ * if there are 16 or more status_read requests missing an adapter_reopen
+ * is triggered
+ */
+int zfcp_status_read_refill(struct zfcp_adapter *adapter)
+{
+ while (atomic_read(&adapter->stat_miss) > 0)
+ if (zfcp_fsf_status_read(adapter)) {
+ if (atomic_read(&adapter->stat_miss) >= 16) {
+ zfcp_erp_adapter_reopen(adapter, 0, 103, NULL);
+ return 1;
+ }
+ break;
+ } else
+ atomic_dec(&adapter->stat_miss);
+ return 0;
+}
+
+static void _zfcp_status_read_scheduler(struct work_struct *work)
+{
+ zfcp_status_read_refill(container_of(work, struct zfcp_adapter,
+ stat_work));
+}
+
+static int zfcp_nameserver_enqueue(struct zfcp_adapter *adapter)
+{
+ struct zfcp_port *port;
+
+ port = zfcp_port_enqueue(adapter, 0, ZFCP_STATUS_PORT_WKA,
+ ZFCP_DID_DIRECTORY_SERVICE);
+ if (IS_ERR(port))
+ return PTR_ERR(port);
+ zfcp_port_put(port);
+
+ return 0;
+}
+
+/**
+ * zfcp_adapter_enqueue - enqueue a new adapter to the list
+ * @ccw_device: pointer to the struct cc_device
+ *
+ * Returns: 0 if a new adapter was successfully enqueued
+ * -ENOMEM if alloc failed
* Enqueues an adapter at the end of the adapter list in the driver data.
* All adapter internal structures are set up.
* Proc-fs entries are also created.
- *
- * returns: 0 if a new adapter was successfully enqueued
- * ZFCP_KNOWN if an adapter with this devno was already present
- * -ENOMEM if alloc failed
* locks: config_sema must be held to serialise changes to the adapter list
*/
-struct zfcp_adapter *
-zfcp_adapter_enqueue(struct ccw_device *ccw_device)
+int zfcp_adapter_enqueue(struct ccw_device *ccw_device)
{
- int retval = 0;
struct zfcp_adapter *adapter;
/*
@@ -983,85 +483,58 @@ zfcp_adapter_enqueue(struct ccw_device *ccw_device)
* are protected by the config_sema, which must be held to get here
*/
- /* try to allocate new adapter data structure (zeroed) */
- adapter = kzalloc(sizeof (struct zfcp_adapter), GFP_KERNEL);
- if (!adapter) {
- ZFCP_LOG_INFO("error: allocation of base adapter "
- "structure failed\n");
- goto out;
- }
+ adapter = kzalloc(sizeof(struct zfcp_adapter), GFP_KERNEL);
+ if (!adapter)
+ return -ENOMEM;
ccw_device->handler = NULL;
-
- /* save ccw_device pointer */
adapter->ccw_device = ccw_device;
+ atomic_set(&adapter->refcount, 0);
- retval = zfcp_qdio_allocate_queues(adapter);
- if (retval)
- goto queues_alloc_failed;
-
- retval = zfcp_qdio_allocate(adapter);
- if (retval)
+ if (zfcp_qdio_allocate(adapter))
goto qdio_allocate_failed;
- retval = zfcp_allocate_low_mem_buffers(adapter);
- if (retval) {
- ZFCP_LOG_INFO("error: pool allocation failed\n");
+ if (zfcp_allocate_low_mem_buffers(adapter))
goto failed_low_mem_buffers;
- }
- /* initialise reference count stuff */
- atomic_set(&adapter->refcount, 0);
+ if (zfcp_reqlist_alloc(adapter))
+ goto failed_low_mem_buffers;
+
+ if (zfcp_adapter_debug_register(adapter))
+ goto debug_register_failed;
+
init_waitqueue_head(&adapter->remove_wq);
+ init_waitqueue_head(&adapter->erp_thread_wqh);
+ init_waitqueue_head(&adapter->erp_done_wqh);
- /* initialise list of ports */
INIT_LIST_HEAD(&adapter->port_list_head);
-
- /* initialise list of ports to be removed */
INIT_LIST_HEAD(&adapter->port_remove_lh);
+ INIT_LIST_HEAD(&adapter->erp_ready_head);
+ INIT_LIST_HEAD(&adapter->erp_running_head);
- /* initialize list of fsf requests */
spin_lock_init(&adapter->req_list_lock);
- retval = zfcp_reqlist_alloc(adapter);
- if (retval) {
- ZFCP_LOG_INFO("request list initialization failed\n");
- goto failed_low_mem_buffers;
- }
-
- /* initialize debug locks */
spin_lock_init(&adapter->hba_dbf_lock);
spin_lock_init(&adapter->san_dbf_lock);
spin_lock_init(&adapter->scsi_dbf_lock);
spin_lock_init(&adapter->rec_dbf_lock);
-
- retval = zfcp_adapter_debug_register(adapter);
- if (retval)
- goto debug_register_failed;
-
- /* initialize error recovery stuff */
+ spin_lock_init(&adapter->req_q.lock);
rwlock_init(&adapter->erp_lock);
- sema_init(&adapter->erp_ready_sem, 0);
- INIT_LIST_HEAD(&adapter->erp_ready_head);
- INIT_LIST_HEAD(&adapter->erp_running_head);
-
- /* initialize abort lock */
rwlock_init(&adapter->abort_lock);
- /* initialise some erp stuff */
- init_waitqueue_head(&adapter->erp_thread_wqh);
- init_waitqueue_head(&adapter->erp_done_wqh);
+ sema_init(&adapter->erp_ready_sem, 0);
- /* initialize lock of associated request queue */
- rwlock_init(&adapter->request_queue.queue_lock);
+ INIT_WORK(&adapter->stat_work, _zfcp_status_read_scheduler);
+ INIT_WORK(&adapter->scan_work, _zfcp_scan_ports_later);
/* mark adapter unusable as long as sysfs registration is not complete */
atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status);
dev_set_drvdata(&ccw_device->dev, adapter);
- if (zfcp_sysfs_adapter_create_files(&ccw_device->dev))
+ if (sysfs_create_group(&ccw_device->dev.kobj,
+ &zfcp_sysfs_adapter_attrs))
goto sysfs_failed;
adapter->generic_services.parent = &adapter->ccw_device->dev;
@@ -1072,7 +545,6 @@ zfcp_adapter_enqueue(struct ccw_device *ccw_device)
if (device_register(&adapter->generic_services))
goto generic_services_failed;
- /* put allocated adapter at list tail */
write_lock_irq(&zfcp_data.config_lock);
atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status);
list_add_tail(&adapter->list, &zfcp_data.adapter_list_head);
@@ -1080,57 +552,49 @@ zfcp_adapter_enqueue(struct ccw_device *ccw_device)
zfcp_data.adapters++;
- goto out;
+ zfcp_nameserver_enqueue(adapter);
+
+ return 0;
- generic_services_failed:
- zfcp_sysfs_adapter_remove_files(&adapter->ccw_device->dev);
- sysfs_failed:
+generic_services_failed:
+ sysfs_remove_group(&ccw_device->dev.kobj,
+ &zfcp_sysfs_adapter_attrs);
+sysfs_failed:
zfcp_adapter_debug_unregister(adapter);
- debug_register_failed:
+debug_register_failed:
dev_set_drvdata(&ccw_device->dev, NULL);
- zfcp_reqlist_free(adapter);
- failed_low_mem_buffers:
+ kfree(adapter->req_list);
+failed_low_mem_buffers:
zfcp_free_low_mem_buffers(adapter);
- if (qdio_free(ccw_device) != 0)
- ZFCP_LOG_NORMAL("bug: qdio_free for adapter %s failed\n",
- zfcp_get_busid_by_adapter(adapter));
- qdio_allocate_failed:
- zfcp_qdio_free_queues(adapter);
- queues_alloc_failed:
+qdio_allocate_failed:
+ zfcp_qdio_free(adapter);
kfree(adapter);
- adapter = NULL;
- out:
- return adapter;
+ return -ENOMEM;
}
-/*
- * returns: 0 - struct zfcp_adapter data structure successfully removed
- * !0 - struct zfcp_adapter data structure could not be removed
- * (e.g. still used)
+/**
+ * zfcp_adapter_dequeue - remove the adapter from the resource list
+ * @adapter: pointer to struct zfcp_adapter which should be removed
* locks: adapter list write lock is assumed to be held by caller
*/
-void
-zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
+void zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
{
int retval = 0;
unsigned long flags;
+ cancel_work_sync(&adapter->scan_work);
+ cancel_work_sync(&adapter->stat_work);
zfcp_adapter_scsi_unregister(adapter);
device_unregister(&adapter->generic_services);
- zfcp_sysfs_adapter_remove_files(&adapter->ccw_device->dev);
+ sysfs_remove_group(&adapter->ccw_device->dev.kobj,
+ &zfcp_sysfs_adapter_attrs);
dev_set_drvdata(&adapter->ccw_device->dev, NULL);
/* sanity check: no pending FSF requests */
spin_lock_irqsave(&adapter->req_list_lock, flags);
retval = zfcp_reqlist_isempty(adapter);
spin_unlock_irqrestore(&adapter->req_list_lock, flags);
- if (!retval) {
- ZFCP_LOG_NORMAL("bug: adapter %s (%p) still in use, "
- "%i requests outstanding\n",
- zfcp_get_busid_by_adapter(adapter), adapter,
- atomic_read(&adapter->reqs_active));
- retval = -EBUSY;
- goto out;
- }
+ if (!retval)
+ return;
zfcp_adapter_debug_unregister(adapter);
@@ -1142,26 +606,18 @@ zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
/* decrease number of adapters in list */
zfcp_data.adapters--;
- ZFCP_LOG_TRACE("adapter %s (%p) removed from list, "
- "%i adapters still in list\n",
- zfcp_get_busid_by_adapter(adapter),
- adapter, zfcp_data.adapters);
-
- retval = qdio_free(adapter->ccw_device);
- if (retval)
- ZFCP_LOG_NORMAL("bug: qdio_free for adapter %s failed\n",
- zfcp_get_busid_by_adapter(adapter));
+ zfcp_qdio_free(adapter);
zfcp_free_low_mem_buffers(adapter);
- /* free memory of adapter data structure and queues */
- zfcp_qdio_free_queues(adapter);
- zfcp_reqlist_free(adapter);
+ kfree(adapter->req_list);
kfree(adapter->fc_stats);
kfree(adapter->stats_reset_data);
- ZFCP_LOG_TRACE("freeing adapter structure\n");
kfree(adapter);
- out:
- return;
+}
+
+static void zfcp_sysfs_port_release(struct device *dev)
+{
+ kfree(container_of(dev, struct zfcp_port, sysfs_device));
}
/**
@@ -1170,98 +626,90 @@ zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
* @wwpn: WWPN of the remote port to be enqueued
* @status: initial status for the port
* @d_id: destination id of the remote port to be enqueued
- * Return: pointer to enqueued port on success, NULL on error
+ * Returns: pointer to enqueued port on success, ERR_PTR on error
* Locks: config_sema must be held to serialize changes to the port list
*
* All port internal structures are set up and the sysfs entry is generated.
* d_id is used to enqueue ports with a well known address like the Directory
* Service for nameserver lookup.
*/
-struct zfcp_port *
-zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, u32 status,
- u32 d_id)
+struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn,
+ u32 status, u32 d_id)
{
struct zfcp_port *port;
- int check_wwpn;
-
- check_wwpn = !(status & ZFCP_STATUS_PORT_NO_WWPN);
- /*
- * check that there is no port with this WWPN already in list
- */
- if (check_wwpn) {
- read_lock_irq(&zfcp_data.config_lock);
- port = zfcp_get_port_by_wwpn(adapter, wwpn);
- read_unlock_irq(&zfcp_data.config_lock);
- if (port)
- return NULL;
- }
+ int retval;
+ char *bus_id;
- port = kzalloc(sizeof (struct zfcp_port), GFP_KERNEL);
+ port = kzalloc(sizeof(struct zfcp_port), GFP_KERNEL);
if (!port)
- return NULL;
+ return ERR_PTR(-ENOMEM);
- /* initialise reference count stuff */
- atomic_set(&port->refcount, 0);
init_waitqueue_head(&port->remove_wq);
INIT_LIST_HEAD(&port->unit_list_head);
INIT_LIST_HEAD(&port->unit_remove_lh);
port->adapter = adapter;
+ port->d_id = d_id;
+ port->wwpn = wwpn;
- if (check_wwpn)
- port->wwpn = wwpn;
-
- atomic_set_mask(status, &port->status);
+ /* mark port unusable as long as sysfs registration is not complete */
+ atomic_set_mask(status | ZFCP_STATUS_COMMON_REMOVE, &port->status);
+ atomic_set(&port->refcount, 0);
- /* setup for sysfs registration */
if (status & ZFCP_STATUS_PORT_WKA) {
switch (d_id) {
case ZFCP_DID_DIRECTORY_SERVICE:
- snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE,
- "directory");
+ bus_id = "directory";
break;
case ZFCP_DID_MANAGEMENT_SERVICE:
- snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE,
- "management");
+ bus_id = "management";
break;
case ZFCP_DID_KEY_DISTRIBUTION_SERVICE:
- snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE,
- "key_distribution");
+ bus_id = "key_distribution";
break;
case ZFCP_DID_ALIAS_SERVICE:
- snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE,
- "alias");
+ bus_id = "alias";
break;
case ZFCP_DID_TIME_SERVICE:
- snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE,
- "time");
+ bus_id = "time";
break;
default:
kfree(port);
- return NULL;
+ return ERR_PTR(-EINVAL);
}
- port->d_id = d_id;
+ snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE, "%s", bus_id);
port->sysfs_device.parent = &adapter->generic_services;
} else {
snprintf(port->sysfs_device.bus_id,
BUS_ID_SIZE, "0x%016llx", wwpn);
port->sysfs_device.parent = &adapter->ccw_device->dev;
}
+
port->sysfs_device.release = zfcp_sysfs_port_release;
dev_set_drvdata(&port->sysfs_device, port);
- /* mark port unusable as long as sysfs registration is not complete */
- atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
+ read_lock_irq(&zfcp_data.config_lock);
+ if (!(status & ZFCP_STATUS_PORT_NO_WWPN))
+ if (zfcp_get_port_by_wwpn(adapter, wwpn)) {
+ read_unlock_irq(&zfcp_data.config_lock);
+ goto err_out_free;
+ }
+ read_unlock_irq(&zfcp_data.config_lock);
- if (device_register(&port->sysfs_device)) {
- kfree(port);
- return NULL;
- }
+ if (device_register(&port->sysfs_device))
+ goto err_out_free;
+
+ if (status & ZFCP_STATUS_PORT_WKA)
+ retval = sysfs_create_group(&port->sysfs_device.kobj,
+ &zfcp_sysfs_ns_port_attrs);
+ else
+ retval = sysfs_create_group(&port->sysfs_device.kobj,
+ &zfcp_sysfs_port_attrs);
- if (zfcp_sysfs_port_create_files(&port->sysfs_device, status)) {
+ if (retval) {
device_unregister(&port->sysfs_device);
- return NULL;
+ goto err_out;
}
zfcp_port_get(port);
@@ -1274,15 +722,23 @@ zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, u32 status,
if (!adapter->nameserver_port)
adapter->nameserver_port = port;
adapter->ports++;
+
write_unlock_irq(&zfcp_data.config_lock);
zfcp_adapter_get(adapter);
-
return port;
+
+err_out_free:
+ kfree(port);
+err_out:
+ return ERR_PTR(-EINVAL);
}
-void
-zfcp_port_dequeue(struct zfcp_port *port)
+/**
+ * zfcp_port_dequeue - dequeues a port from the port list of the adapter
+ * @port: pointer to struct zfcp_port which should be removed
+ */
+void zfcp_port_dequeue(struct zfcp_port *port)
{
zfcp_port_wait(port);
write_lock_irq(&zfcp_data.config_lock);
@@ -1293,546 +749,53 @@ zfcp_port_dequeue(struct zfcp_port *port)
fc_remote_port_delete(port->rport);
port->rport = NULL;
zfcp_adapter_put(port->adapter);
- zfcp_sysfs_port_remove_files(&port->sysfs_device,
- atomic_read(&port->status));
- device_unregister(&port->sysfs_device);
-}
-
-/* Enqueues a nameserver port */
-int
-zfcp_nameserver_enqueue(struct zfcp_adapter *adapter)
-{
- struct zfcp_port *port;
-
- port = zfcp_port_enqueue(adapter, 0, ZFCP_STATUS_PORT_WKA,
- ZFCP_DID_DIRECTORY_SERVICE);
- if (!port) {
- ZFCP_LOG_INFO("error: enqueue of nameserver port for "
- "adapter %s failed\n",
- zfcp_get_busid_by_adapter(adapter));
- return -ENXIO;
- }
- zfcp_port_put(port);
-
- return 0;
-}
-
-#undef ZFCP_LOG_AREA
-
-/****************************************************************/
-/******* Fibre Channel Standard related Functions **************/
-/****************************************************************/
-
-#define ZFCP_LOG_AREA ZFCP_LOG_AREA_FC
-
-static void zfcp_fsf_incoming_els_rscn(struct zfcp_fsf_req *fsf_req)
-{
- struct fsf_status_read_buffer *status_buffer = (void*)fsf_req->data;
- struct zfcp_adapter *adapter = fsf_req->adapter;
- struct fcp_rscn_head *fcp_rscn_head;
- struct fcp_rscn_element *fcp_rscn_element;
- struct zfcp_port *port;
- u16 i;
- u16 no_entries;
- u32 range_mask;
- unsigned long flags;
-
- fcp_rscn_head = (struct fcp_rscn_head *) status_buffer->payload;
- fcp_rscn_element = (struct fcp_rscn_element *) status_buffer->payload;
-
- /* see FC-FS */
- no_entries = (fcp_rscn_head->payload_len / 4);
-
- for (i = 1; i < no_entries; i++) {
- /* skip head and start with 1st element */
- fcp_rscn_element++;
- switch (fcp_rscn_element->addr_format) {
- case ZFCP_PORT_ADDRESS:
- range_mask = ZFCP_PORTS_RANGE_PORT;
- break;
- case ZFCP_AREA_ADDRESS:
- range_mask = ZFCP_PORTS_RANGE_AREA;
- break;
- case ZFCP_DOMAIN_ADDRESS:
- range_mask = ZFCP_PORTS_RANGE_DOMAIN;
- break;
- case ZFCP_FABRIC_ADDRESS:
- range_mask = ZFCP_PORTS_RANGE_FABRIC;
- break;
- default:
- ZFCP_LOG_INFO("incoming RSCN with unknown "
- "address format\n");
- continue;
- }
- read_lock_irqsave(&zfcp_data.config_lock, flags);
- list_for_each_entry(port, &adapter->port_list_head, list) {
- if (atomic_test_mask
- (ZFCP_STATUS_PORT_WKA, &port->status))
- continue;
- /* Do we know this port? If not skip it. */
- if (!atomic_test_mask
- (ZFCP_STATUS_PORT_DID_DID, &port->status)) {
- ZFCP_LOG_INFO("incoming RSCN, trying to open "
- "port 0x%016Lx\n", port->wwpn);
- zfcp_erp_port_reopen(port,
- ZFCP_STATUS_COMMON_ERP_FAILED,
- 82, fsf_req);
- continue;
- }
-
- /*
- * FIXME: race: d_id might being invalidated
- * (...DID_DID reset)
- */
- if ((port->d_id & range_mask)
- == (fcp_rscn_element->nport_did & range_mask)) {
- ZFCP_LOG_TRACE("reopen did 0x%08x\n",
- fcp_rscn_element->nport_did);
- /*
- * Unfortunately, an RSCN does not specify the
- * type of change a target underwent. We assume
- * that it makes sense to reopen the link.
- * FIXME: Shall we try to find out more about
- * the target and link state before closing it?
- * How to accomplish this? (nameserver?)
- * Where would such code be put in?
- * (inside or outside erp)
- */
- ZFCP_LOG_INFO("incoming RSCN, trying to open "
- "port 0x%016Lx\n", port->wwpn);
- zfcp_test_link(port);
- }
- }
- read_unlock_irqrestore(&zfcp_data.config_lock, flags);
- }
-}
-
-static void zfcp_fsf_incoming_els_plogi(struct zfcp_fsf_req *fsf_req)
-{
- struct fsf_status_read_buffer *status_buffer = (void*)fsf_req->data;
- struct zfcp_adapter *adapter = fsf_req->adapter;
- struct fsf_plogi *els_plogi;
- struct zfcp_port *port;
- unsigned long flags;
-
- els_plogi = (struct fsf_plogi *) status_buffer->payload;
- read_lock_irqsave(&zfcp_data.config_lock, flags);
- list_for_each_entry(port, &adapter->port_list_head, list) {
- if (port->wwpn == (*(wwn_t *) &els_plogi->serv_param.wwpn))
- break;
- }
- read_unlock_irqrestore(&zfcp_data.config_lock, flags);
-
- if (!port || (port->wwpn != (*(wwn_t *) &els_plogi->serv_param.wwpn))) {
- ZFCP_LOG_DEBUG("ignored incoming PLOGI for nonexisting port "
- "with d_id 0x%06x on adapter %s\n",
- status_buffer->d_id,
- zfcp_get_busid_by_adapter(adapter));
- } else {
- zfcp_erp_port_forced_reopen(port, 0, 83, fsf_req);
- }
-}
-
-static void zfcp_fsf_incoming_els_logo(struct zfcp_fsf_req *fsf_req)
-{
- struct fsf_status_read_buffer *status_buffer = (void*)fsf_req->data;
- struct zfcp_adapter *adapter = fsf_req->adapter;
- struct fcp_logo *els_logo = (struct fcp_logo *) status_buffer->payload;
- struct zfcp_port *port;
- unsigned long flags;
-
- read_lock_irqsave(&zfcp_data.config_lock, flags);
- list_for_each_entry(port, &adapter->port_list_head, list) {
- if (port->wwpn == els_logo->nport_wwpn)
- break;
- }
- read_unlock_irqrestore(&zfcp_data.config_lock, flags);
-
- if (!port || (port->wwpn != els_logo->nport_wwpn)) {
- ZFCP_LOG_DEBUG("ignored incoming LOGO for nonexisting port "
- "with d_id 0x%06x on adapter %s\n",
- status_buffer->d_id,
- zfcp_get_busid_by_adapter(adapter));
- } else {
- zfcp_erp_port_forced_reopen(port, 0, 84, fsf_req);
- }
-}
-
-static void
-zfcp_fsf_incoming_els_unknown(struct zfcp_adapter *adapter,
- struct fsf_status_read_buffer *status_buffer)
-{
- ZFCP_LOG_NORMAL("warning: unknown incoming ELS 0x%08x "
- "for adapter %s\n", *(u32 *) (status_buffer->payload),
- zfcp_get_busid_by_adapter(adapter));
-
-}
-
-void
-zfcp_fsf_incoming_els(struct zfcp_fsf_req *fsf_req)
-{
- struct fsf_status_read_buffer *status_buffer;
- u32 els_type;
- struct zfcp_adapter *adapter;
-
- status_buffer = (struct fsf_status_read_buffer *) fsf_req->data;
- els_type = *(u32 *) (status_buffer->payload);
- adapter = fsf_req->adapter;
-
- zfcp_san_dbf_event_incoming_els(fsf_req);
- if (els_type == LS_PLOGI)
- zfcp_fsf_incoming_els_plogi(fsf_req);
- else if (els_type == LS_LOGO)
- zfcp_fsf_incoming_els_logo(fsf_req);
- else if ((els_type & 0xffff0000) == LS_RSCN)
- /* we are only concerned with the command, not the length */
- zfcp_fsf_incoming_els_rscn(fsf_req);
- else
- zfcp_fsf_incoming_els_unknown(adapter, status_buffer);
-}
-
-
-/**
- * zfcp_gid_pn_buffers_alloc - allocate buffers for GID_PN nameserver request
- * @gid_pn: pointer to return pointer to struct zfcp_gid_pn_data
- * @pool: pointer to mempool_t if non-null memory pool is used for allocation
- */
-static int
-zfcp_gid_pn_buffers_alloc(struct zfcp_gid_pn_data **gid_pn, mempool_t *pool)
-{
- struct zfcp_gid_pn_data *data;
-
- if (pool != NULL) {
- data = mempool_alloc(pool, GFP_ATOMIC);
- if (likely(data != NULL)) {
- data->ct.pool = pool;
- }
- } else {
- data = kmem_cache_alloc(zfcp_data.gid_pn_cache, GFP_ATOMIC);
- }
-
- if (NULL == data)
- return -ENOMEM;
-
- memset(data, 0, sizeof(*data));
- sg_init_table(&data->req , 1);
- sg_init_table(&data->resp , 1);
- data->ct.req = &data->req;
- data->ct.resp = &data->resp;
- data->ct.req_count = data->ct.resp_count = 1;
- zfcp_address_to_sg(&data->ct_iu_req, &data->req, sizeof(struct ct_iu_gid_pn_req));
- zfcp_address_to_sg(&data->ct_iu_resp, &data->resp, sizeof(struct ct_iu_gid_pn_resp));
-
- *gid_pn = data;
- return 0;
-}
-
-/**
- * zfcp_gid_pn_buffers_free - free buffers for GID_PN nameserver request
- * @gid_pn: pointer to struct zfcp_gid_pn_data which has to be freed
- */
-static void zfcp_gid_pn_buffers_free(struct zfcp_gid_pn_data *gid_pn)
-{
- if (gid_pn->ct.pool)
- mempool_free(gid_pn, gid_pn->ct.pool);
+ if (atomic_read(&port->status) & ZFCP_STATUS_PORT_WKA)
+ sysfs_remove_group(&port->sysfs_device.kobj,
+ &zfcp_sysfs_ns_port_attrs);
else
- kmem_cache_free(zfcp_data.gid_pn_cache, gid_pn);
-}
-
-/**
- * zfcp_ns_gid_pn_request - initiate GID_PN nameserver request
- * @erp_action: pointer to zfcp_erp_action where GID_PN request is needed
- */
-int
-zfcp_ns_gid_pn_request(struct zfcp_erp_action *erp_action)
-{
- int ret;
- struct ct_iu_gid_pn_req *ct_iu_req;
- struct zfcp_gid_pn_data *gid_pn;
- struct zfcp_adapter *adapter = erp_action->adapter;
-
- ret = zfcp_gid_pn_buffers_alloc(&gid_pn, adapter->pool.data_gid_pn);
- if (ret < 0) {
- ZFCP_LOG_INFO("error: buffer allocation for gid_pn nameserver "
- "request failed for adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- goto out;
- }
-
- /* setup nameserver request */
- ct_iu_req = zfcp_sg_to_address(gid_pn->ct.req);
- ct_iu_req->header.revision = ZFCP_CT_REVISION;
- ct_iu_req->header.gs_type = ZFCP_CT_DIRECTORY_SERVICE;
- ct_iu_req->header.gs_subtype = ZFCP_CT_NAME_SERVER;
- ct_iu_req->header.options = ZFCP_CT_SYNCHRONOUS;
- ct_iu_req->header.cmd_rsp_code = ZFCP_CT_GID_PN;
- ct_iu_req->header.max_res_size = ZFCP_CT_MAX_SIZE;
- ct_iu_req->wwpn = erp_action->port->wwpn;
-
- /* setup parameters for send generic command */
- gid_pn->ct.port = adapter->nameserver_port;
- gid_pn->ct.handler = zfcp_ns_gid_pn_handler;
- gid_pn->ct.handler_data = (unsigned long) gid_pn;
- gid_pn->ct.timeout = ZFCP_NS_GID_PN_TIMEOUT;
- gid_pn->port = erp_action->port;
-
- ret = zfcp_fsf_send_ct(&gid_pn->ct, adapter->pool.fsf_req_erp,
- erp_action);
- if (ret) {
- ZFCP_LOG_INFO("error: initiation of gid_pn nameserver request "
- "failed for adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
-
- zfcp_gid_pn_buffers_free(gid_pn);
- }
-
- out:
- return ret;
-}
-
-/**
- * zfcp_ns_gid_pn_handler - handler for GID_PN nameserver request
- * @data: unsigned long, contains pointer to struct zfcp_gid_pn_data
- */
-static void zfcp_ns_gid_pn_handler(unsigned long data)
-{
- struct zfcp_port *port;
- struct zfcp_send_ct *ct;
- struct ct_iu_gid_pn_req *ct_iu_req;
- struct ct_iu_gid_pn_resp *ct_iu_resp;
- struct zfcp_gid_pn_data *gid_pn;
-
-
- gid_pn = (struct zfcp_gid_pn_data *) data;
- port = gid_pn->port;
- ct = &gid_pn->ct;
- ct_iu_req = zfcp_sg_to_address(ct->req);
- ct_iu_resp = zfcp_sg_to_address(ct->resp);
-
- if (ct->status != 0)
- goto failed;
-
- if (zfcp_check_ct_response(&ct_iu_resp->header)) {
- /* FIXME: do we need some specific erp entry points */
- atomic_set_mask(ZFCP_STATUS_PORT_INVALID_WWPN, &port->status);
- goto failed;
- }
- /* paranoia */
- if (ct_iu_req->wwpn != port->wwpn) {
- ZFCP_LOG_NORMAL("bug: wwpn 0x%016Lx returned by nameserver "
- "lookup does not match expected wwpn 0x%016Lx "
- "for adapter %s\n", ct_iu_req->wwpn, port->wwpn,
- zfcp_get_busid_by_port(port));
- goto mismatch;
- }
-
- /* looks like a valid d_id */
- port->d_id = ct_iu_resp->d_id & ZFCP_DID_MASK;
- atomic_set_mask(ZFCP_STATUS_PORT_DID_DID, &port->status);
- ZFCP_LOG_DEBUG("adapter %s: wwpn=0x%016Lx ---> d_id=0x%06x\n",
- zfcp_get_busid_by_port(port), port->wwpn, port->d_id);
- goto out;
-
- mismatch:
- ZFCP_LOG_DEBUG("CT IUs do not match:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, (char *) ct_iu_req,
- sizeof(struct ct_iu_gid_pn_req));
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, (char *) ct_iu_resp,
- sizeof(struct ct_iu_gid_pn_resp));
-
- failed:
- ZFCP_LOG_NORMAL("warning: failed gid_pn nameserver request for wwpn "
- "0x%016Lx for adapter %s\n",
- port->wwpn, zfcp_get_busid_by_port(port));
- out:
- zfcp_gid_pn_buffers_free(gid_pn);
- return;
+ sysfs_remove_group(&port->sysfs_device.kobj,
+ &zfcp_sysfs_port_attrs);
+ device_unregister(&port->sysfs_device);
}
-/* reject CT_IU reason codes acc. to FC-GS-4 */
-static const struct zfcp_rc_entry zfcp_ct_rc[] = {
- {0x01, "invalid command code"},
- {0x02, "invalid version level"},
- {0x03, "logical error"},
- {0x04, "invalid CT_IU size"},
- {0x05, "logical busy"},
- {0x07, "protocol error"},
- {0x09, "unable to perform command request"},
- {0x0b, "command not supported"},
- {0x0d, "server not available"},
- {0x0e, "session could not be established"},
- {0xff, "vendor specific error"},
- {0, NULL},
-};
-
-/* LS_RJT reason codes acc. to FC-FS */
-static const struct zfcp_rc_entry zfcp_ls_rjt_rc[] = {
- {0x01, "invalid LS_Command code"},
- {0x03, "logical error"},
- {0x05, "logical busy"},
- {0x07, "protocol error"},
- {0x09, "unable to perform command request"},
- {0x0b, "command not supported"},
- {0x0e, "command already in progress"},
- {0xff, "vendor specific error"},
- {0, NULL},
-};
-
-/* reject reason codes according to FC-PH/FC-FS */
-static const struct zfcp_rc_entry zfcp_p_rjt_rc[] = {
- {0x01, "invalid D_ID"},
- {0x02, "invalid S_ID"},
- {0x03, "Nx_Port not available, temporary"},
- {0x04, "Nx_Port not available, permament"},
- {0x05, "class not supported"},
- {0x06, "delimiter usage error"},
- {0x07, "TYPE not supported"},
- {0x08, "invalid Link_Control"},
- {0x09, "invalid R_CTL field"},
- {0x0a, "invalid F_CTL field"},
- {0x0b, "invalid OX_ID"},
- {0x0c, "invalid RX_ID"},
- {0x0d, "invalid SEQ_ID"},
- {0x0e, "invalid DF_CTL"},
- {0x0f, "invalid SEQ_CNT"},
- {0x10, "invalid parameter field"},
- {0x11, "exchange error"},
- {0x12, "protocol error"},
- {0x13, "incorrect length"},
- {0x14, "unsupported ACK"},
- {0x15, "class of service not supported by entity at FFFFFE"},
- {0x16, "login required"},
- {0x17, "excessive sequences attempted"},
- {0x18, "unable to establish exchange"},
- {0x1a, "fabric path not available"},
- {0x1b, "invalid VC_ID (class 4)"},
- {0x1c, "invalid CS_CTL field"},
- {0x1d, "insufficient resources for VC (class 4)"},
- {0x1f, "invalid class of service"},
- {0x20, "preemption request rejected"},
- {0x21, "preemption not enabled"},
- {0x22, "multicast error"},
- {0x23, "multicast error terminate"},
- {0x24, "process login required"},
- {0xff, "vendor specific reject"},
- {0, NULL},
-};
-
/**
- * zfcp_rc_description - return description for given reaon code
- * @code: reason code
- * @rc_table: table of reason codes and descriptions
+ * zfcp_sg_free_table - free memory used by scatterlists
+ * @sg: pointer to scatterlist
+ * @count: number of scatterlist which are to be free'ed
+ * the scatterlist are expected to reference pages always
*/
-static const char *
-zfcp_rc_description(u8 code, const struct zfcp_rc_entry *rc_table)
+void zfcp_sg_free_table(struct scatterlist *sg, int count)
{
- const char *descr = "unknown reason code";
+ int i;
- do {
- if (code == rc_table->code) {
- descr = rc_table->description;
+ for (i = 0; i < count; i++, sg++)
+ if (sg)
+ free_page((unsigned long) sg_virt(sg));
+ else
break;
- }
- rc_table++;
- } while (rc_table->code && rc_table->description);
-
- return descr;
}
/**
- * zfcp_check_ct_response - evaluate reason code for CT_IU
- * @rjt: response payload to an CT_IU request
- * Return: 0 for accept CT_IU, 1 for reject CT_IU or invlid response code
+ * zfcp_sg_setup_table - init scatterlist and allocate, assign buffers
+ * @sg: pointer to struct scatterlist
+ * @count: number of scatterlists which should be assigned with buffers
+ * of size page
+ *
+ * Returns: 0 on success, -ENOMEM otherwise
*/
-int
-zfcp_check_ct_response(struct ct_hdr *rjt)
+int zfcp_sg_setup_table(struct scatterlist *sg, int count)
{
- if (rjt->cmd_rsp_code == ZFCP_CT_ACCEPT)
- return 0;
+ void *addr;
+ int i;
- if (rjt->cmd_rsp_code != ZFCP_CT_REJECT) {
- ZFCP_LOG_NORMAL("error: invalid Generic Service command/"
- "response code (0x%04hx)\n",
- rjt->cmd_rsp_code);
- return 1;
+ sg_init_table(sg, count);
+ for (i = 0; i < count; i++, sg++) {
+ addr = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!addr) {
+ zfcp_sg_free_table(sg, i);
+ return -ENOMEM;
+ }
+ sg_set_buf(sg, addr, PAGE_SIZE);
}
-
- ZFCP_LOG_INFO("Generic Service command rejected\n");
- ZFCP_LOG_INFO("%s (0x%02x, 0x%02x, 0x%02x)\n",
- zfcp_rc_description(rjt->reason_code, zfcp_ct_rc),
- (u32) rjt->reason_code, (u32) rjt->reason_code_expl,
- (u32) rjt->vendor_unique);
-
- return 1;
-}
-
-/**
- * zfcp_print_els_rjt - print reject parameter and description for ELS reject
- * @rjt_par: reject parameter acc. to FC-PH/FC-FS
- * @rc_table: table of reason codes and descriptions
- */
-static void
-zfcp_print_els_rjt(struct zfcp_ls_rjt_par *rjt_par,
- const struct zfcp_rc_entry *rc_table)
-{
- ZFCP_LOG_INFO("%s (%02x %02x %02x %02x)\n",
- zfcp_rc_description(rjt_par->reason_code, rc_table),
- (u32) rjt_par->action, (u32) rjt_par->reason_code,
- (u32) rjt_par->reason_expl, (u32) rjt_par->vendor_unique);
-}
-
-/**
- * zfcp_fsf_handle_els_rjt - evaluate status qualifier/reason code on ELS reject
- * @sq: status qualifier word
- * @rjt_par: reject parameter as described in FC-PH and FC-FS
- * Return: -EROMTEIO for LS_RJT, -EREMCHG for invalid D_ID, -EIO else
- */
-int
-zfcp_handle_els_rjt(u32 sq, struct zfcp_ls_rjt_par *rjt_par)
-{
- int ret = -EIO;
-
- if (sq == FSF_IOSTAT_NPORT_RJT) {
- ZFCP_LOG_INFO("ELS rejected (P_RJT)\n");
- zfcp_print_els_rjt(rjt_par, zfcp_p_rjt_rc);
- /* invalid d_id */
- if (rjt_par->reason_code == 0x01)
- ret = -EREMCHG;
- } else if (sq == FSF_IOSTAT_FABRIC_RJT) {
- ZFCP_LOG_INFO("ELS rejected (F_RJT)\n");
- zfcp_print_els_rjt(rjt_par, zfcp_p_rjt_rc);
- /* invalid d_id */
- if (rjt_par->reason_code == 0x01)
- ret = -EREMCHG;
- } else if (sq == FSF_IOSTAT_LS_RJT) {
- ZFCP_LOG_INFO("ELS rejected (LS_RJT)\n");
- zfcp_print_els_rjt(rjt_par, zfcp_ls_rjt_rc);
- ret = -EREMOTEIO;
- } else
- ZFCP_LOG_INFO("unexpected SQ: 0x%02x\n", sq);
-
- return ret;
-}
-
-/**
- * zfcp_plogi_evaluate - evaluate PLOGI playload and copy important fields
- * into zfcp_port structure
- * @port: zfcp_port structure
- * @plogi: plogi payload
- */
-void
-zfcp_plogi_evaluate(struct zfcp_port *port, struct fsf_plogi *plogi)
-{
- port->maxframe_size = plogi->serv_param.common_serv_param[7] |
- ((plogi->serv_param.common_serv_param[6] & 0x0F) << 8);
- if (plogi->serv_param.class1_serv_param[0] & 0x80)
- port->supported_classes |= FC_COS_CLASS1;
- if (plogi->serv_param.class2_serv_param[0] & 0x80)
- port->supported_classes |= FC_COS_CLASS2;
- if (plogi->serv_param.class3_serv_param[0] & 0x80)
- port->supported_classes |= FC_COS_CLASS3;
- if (plogi->serv_param.class4_serv_param[0] & 0x80)
- port->supported_classes |= FC_COS_CLASS4;
+ return 0;
}
-
-#undef ZFCP_LOG_AREA
diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c
index 66d3b88844b..391dd29749f 100644
--- a/drivers/s390/scsi/zfcp_ccw.c
+++ b/drivers/s390/scsi/zfcp_ccw.c
@@ -1,64 +1,13 @@
/*
- * This file is part of the zfcp device driver for
- * FCP adapters for IBM System z9 and zSeries.
+ * zfcp device driver
*
- * (C) Copyright IBM Corp. 2002, 2006
+ * Registration and callback for the s390 common I/O layer.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Copyright IBM Corporation 2002, 2008
*/
#include "zfcp_ext.h"
-#define ZFCP_LOG_AREA ZFCP_LOG_AREA_CONFIG
-
-static int zfcp_ccw_probe(struct ccw_device *);
-static void zfcp_ccw_remove(struct ccw_device *);
-static int zfcp_ccw_set_online(struct ccw_device *);
-static int zfcp_ccw_set_offline(struct ccw_device *);
-static int zfcp_ccw_notify(struct ccw_device *, int);
-static void zfcp_ccw_shutdown(struct ccw_device *);
-
-static struct ccw_device_id zfcp_ccw_device_id[] = {
- {CCW_DEVICE_DEVTYPE(ZFCP_CONTROL_UNIT_TYPE,
- ZFCP_CONTROL_UNIT_MODEL,
- ZFCP_DEVICE_TYPE,
- ZFCP_DEVICE_MODEL)},
- {CCW_DEVICE_DEVTYPE(ZFCP_CONTROL_UNIT_TYPE,
- ZFCP_CONTROL_UNIT_MODEL,
- ZFCP_DEVICE_TYPE,
- ZFCP_DEVICE_MODEL_PRIV)},
- {},
-};
-
-static struct ccw_driver zfcp_ccw_driver = {
- .owner = THIS_MODULE,
- .name = ZFCP_NAME,
- .ids = zfcp_ccw_device_id,
- .probe = zfcp_ccw_probe,
- .remove = zfcp_ccw_remove,
- .set_online = zfcp_ccw_set_online,
- .set_offline = zfcp_ccw_set_offline,
- .notify = zfcp_ccw_notify,
- .shutdown = zfcp_ccw_shutdown,
- .driver = {
- .groups = zfcp_driver_attr_groups,
- },
-};
-
-MODULE_DEVICE_TABLE(ccw, zfcp_ccw_device_id);
-
/**
* zfcp_ccw_probe - probe function of zfcp driver
* @ccw_device: pointer to belonging ccw device
@@ -69,19 +18,16 @@ MODULE_DEVICE_TABLE(ccw, zfcp_ccw_device_id);
* In addition the nameserver port will be added to the ports of the adapter
* and its sysfs representation will be created too.
*/
-static int
-zfcp_ccw_probe(struct ccw_device *ccw_device)
+static int zfcp_ccw_probe(struct ccw_device *ccw_device)
{
- struct zfcp_adapter *adapter;
int retval = 0;
down(&zfcp_data.config_sema);
- adapter = zfcp_adapter_enqueue(ccw_device);
- if (!adapter)
+ if (zfcp_adapter_enqueue(ccw_device)) {
+ dev_err(&ccw_device->dev,
+ "Setup of data structures failed.\n");
retval = -EINVAL;
- else
- ZFCP_LOG_DEBUG("Probed adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
+ }
up(&zfcp_data.config_sema);
return retval;
}
@@ -95,8 +41,7 @@ zfcp_ccw_probe(struct ccw_device *ccw_device)
* ports that belong to this adapter. And in addition all resources of this
* adapter will be freed too.
*/
-static void
-zfcp_ccw_remove(struct ccw_device *ccw_device)
+static void zfcp_ccw_remove(struct ccw_device *ccw_device)
{
struct zfcp_adapter *adapter;
struct zfcp_port *port, *p;
@@ -106,8 +51,6 @@ zfcp_ccw_remove(struct ccw_device *ccw_device)
down(&zfcp_data.config_sema);
adapter = dev_get_drvdata(&ccw_device->dev);
- ZFCP_LOG_DEBUG("Removing adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
write_lock_irq(&zfcp_data.config_lock);
list_for_each_entry_safe(port, p, &adapter->port_list_head, list) {
list_for_each_entry_safe(unit, u, &port->unit_list_head, list) {
@@ -145,8 +88,7 @@ zfcp_ccw_remove(struct ccw_device *ccw_device)
* registered with the SCSI stack, that the QDIO queues will be set up
* and that the adapter will be opened (asynchronously).
*/
-static int
-zfcp_ccw_set_online(struct ccw_device *ccw_device)
+static int zfcp_ccw_set_online(struct ccw_device *ccw_device)
{
struct zfcp_adapter *adapter;
int retval;
@@ -155,12 +97,8 @@ zfcp_ccw_set_online(struct ccw_device *ccw_device)
adapter = dev_get_drvdata(&ccw_device->dev);
retval = zfcp_erp_thread_setup(adapter);
- if (retval) {
- ZFCP_LOG_INFO("error: start of error recovery thread for "
- "adapter %s failed\n",
- zfcp_get_busid_by_adapter(adapter));
+ if (retval)
goto out;
- }
retval = zfcp_adapter_scsi_register(adapter);
if (retval)
@@ -191,8 +129,7 @@ zfcp_ccw_set_online(struct ccw_device *ccw_device)
* This function gets called by the common i/o layer and sets an adapter
* into state offline.
*/
-static int
-zfcp_ccw_set_offline(struct ccw_device *ccw_device)
+static int zfcp_ccw_set_offline(struct ccw_device *ccw_device)
{
struct zfcp_adapter *adapter;
@@ -206,15 +143,14 @@ zfcp_ccw_set_offline(struct ccw_device *ccw_device)
}
/**
- * zfcp_ccw_notify
+ * zfcp_ccw_notify - ccw notify function
* @ccw_device: pointer to belonging ccw device
* @event: indicates if adapter was detached or attached
*
* This function gets called by the common i/o layer if an adapter has gone
* or reappeared.
*/
-static int
-zfcp_ccw_notify(struct ccw_device *ccw_device, int event)
+static int zfcp_ccw_notify(struct ccw_device *ccw_device, int event)
{
struct zfcp_adapter *adapter;
@@ -222,18 +158,15 @@ zfcp_ccw_notify(struct ccw_device *ccw_device, int event)
adapter = dev_get_drvdata(&ccw_device->dev);
switch (event) {
case CIO_GONE:
- ZFCP_LOG_NORMAL("adapter %s: device gone\n",
- zfcp_get_busid_by_adapter(adapter));
+ dev_warn(&adapter->ccw_device->dev, "device gone\n");
zfcp_erp_adapter_shutdown(adapter, 0, 87, NULL);
break;
case CIO_NO_PATH:
- ZFCP_LOG_NORMAL("adapter %s: no path\n",
- zfcp_get_busid_by_adapter(adapter));
+ dev_warn(&adapter->ccw_device->dev, "no path\n");
zfcp_erp_adapter_shutdown(adapter, 0, 88, NULL);
break;
case CIO_OPER:
- ZFCP_LOG_NORMAL("adapter %s: operational again\n",
- zfcp_get_busid_by_adapter(adapter));
+ dev_info(&adapter->ccw_device->dev, "operational again\n");
zfcp_erp_modify_adapter_status(adapter, 11, NULL,
ZFCP_STATUS_COMMON_RUNNING,
ZFCP_SET);
@@ -247,24 +180,10 @@ zfcp_ccw_notify(struct ccw_device *ccw_device, int event)
}
/**
- * zfcp_ccw_register - ccw register function
- *
- * Registers the driver at the common i/o layer. This function will be called
- * at module load time/system start.
- */
-int __init
-zfcp_ccw_register(void)
-{
- return ccw_driver_register(&zfcp_ccw_driver);
-}
-
-/**
- * zfcp_ccw_shutdown - gets called on reboot/shutdown
- *
- * Makes sure that QDIO queues are down when the system gets stopped.
+ * zfcp_ccw_shutdown - handle shutdown from cio
+ * @cdev: device for adapter to shutdown.
*/
-static void
-zfcp_ccw_shutdown(struct ccw_device *cdev)
+static void zfcp_ccw_shutdown(struct ccw_device *cdev)
{
struct zfcp_adapter *adapter;
@@ -275,4 +194,33 @@ zfcp_ccw_shutdown(struct ccw_device *cdev)
up(&zfcp_data.config_sema);
}
-#undef ZFCP_LOG_AREA
+static struct ccw_device_id zfcp_ccw_device_id[] = {
+ { CCW_DEVICE_DEVTYPE(0x1731, 0x3, 0x1732, 0x3) },
+ { CCW_DEVICE_DEVTYPE(0x1731, 0x3, 0x1732, 0x4) }, /* priv. */
+ {},
+};
+
+MODULE_DEVICE_TABLE(ccw, zfcp_ccw_device_id);
+
+static struct ccw_driver zfcp_ccw_driver = {
+ .owner = THIS_MODULE,
+ .name = "zfcp",
+ .ids = zfcp_ccw_device_id,
+ .probe = zfcp_ccw_probe,
+ .remove = zfcp_ccw_remove,
+ .set_online = zfcp_ccw_set_online,
+ .set_offline = zfcp_ccw_set_offline,
+ .notify = zfcp_ccw_notify,
+ .shutdown = zfcp_ccw_shutdown,
+};
+
+/**
+ * zfcp_ccw_register - ccw register function
+ *
+ * Registers the driver at the common i/o layer. This function will be called
+ * at module load time/system start.
+ */
+int __init zfcp_ccw_register(void)
+{
+ return ccw_driver_register(&zfcp_ccw_driver);
+}
diff --git a/drivers/s390/scsi/zfcp_cfdc.c b/drivers/s390/scsi/zfcp_cfdc.c
new file mode 100644
index 00000000000..ec2abceca6d
--- /dev/null
+++ b/drivers/s390/scsi/zfcp_cfdc.c
@@ -0,0 +1,259 @@
+/*
+ * zfcp device driver
+ *
+ * Userspace interface for accessing the
+ * Access Control Lists / Control File Data Channel
+ *
+ * Copyright IBM Corporation 2008
+ */
+
+#include <linux/types.h>
+#include <linux/miscdevice.h>
+#include <asm/ccwdev.h>
+#include "zfcp_def.h"
+#include "zfcp_ext.h"
+#include "zfcp_fsf.h"
+
+#define ZFCP_CFDC_CMND_DOWNLOAD_NORMAL 0x00010001
+#define ZFCP_CFDC_CMND_DOWNLOAD_FORCE 0x00010101
+#define ZFCP_CFDC_CMND_FULL_ACCESS 0x00000201
+#define ZFCP_CFDC_CMND_RESTRICTED_ACCESS 0x00000401
+#define ZFCP_CFDC_CMND_UPLOAD 0x00010002
+
+#define ZFCP_CFDC_DOWNLOAD 0x00000001
+#define ZFCP_CFDC_UPLOAD 0x00000002
+#define ZFCP_CFDC_WITH_CONTROL_FILE 0x00010000
+
+#define ZFCP_CFDC_IOC_MAGIC 0xDD
+#define ZFCP_CFDC_IOC \
+ _IOWR(ZFCP_CFDC_IOC_MAGIC, 0, struct zfcp_cfdc_data)
+
+/**
+ * struct zfcp_cfdc_data - data for ioctl cfdc interface
+ * @signature: request signature
+ * @devno: FCP adapter device number
+ * @command: command code
+ * @fsf_status: returns status of FSF command to userspace
+ * @fsf_status_qual: returned to userspace
+ * @payloads: access conflicts list
+ * @control_file: access control table
+ */
+struct zfcp_cfdc_data {
+ u32 signature;
+ u32 devno;
+ u32 command;
+ u32 fsf_status;
+ u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE];
+ u8 payloads[256];
+ u8 control_file[0];
+};
+
+static int zfcp_cfdc_copy_from_user(struct scatterlist *sg,
+ void __user *user_buffer)
+{
+ unsigned int length;
+ unsigned int size = ZFCP_CFDC_MAX_SIZE;
+
+ while (size) {
+ length = min((unsigned int)size, sg->length);
+ if (copy_from_user(sg_virt(sg++), user_buffer, length))
+ return -EFAULT;
+ user_buffer += length;
+ size -= length;
+ }
+ return 0;
+}
+
+static int zfcp_cfdc_copy_to_user(void __user *user_buffer,
+ struct scatterlist *sg)
+{
+ unsigned int length;
+ unsigned int size = ZFCP_CFDC_MAX_SIZE;
+
+ while (size) {
+ length = min((unsigned int) size, sg->length);
+ if (copy_to_user(user_buffer, sg_virt(sg++), length))
+ return -EFAULT;
+ user_buffer += length;
+ size -= length;
+ }
+ return 0;
+}
+
+static struct zfcp_adapter *zfcp_cfdc_get_adapter(u32 devno)
+{
+ struct zfcp_adapter *adapter = NULL, *cur_adapter;
+ struct ccw_dev_id dev_id;
+
+ read_lock_irq(&zfcp_data.config_lock);
+ list_for_each_entry(cur_adapter, &zfcp_data.adapter_list_head, list) {
+ ccw_device_get_id(cur_adapter->ccw_device, &dev_id);
+ if (dev_id.devno == devno) {
+ adapter = cur_adapter;
+ zfcp_adapter_get(adapter);
+ break;
+ }
+ }
+ read_unlock_irq(&zfcp_data.config_lock);
+ return adapter;
+}
+
+static int zfcp_cfdc_set_fsf(struct zfcp_fsf_cfdc *fsf_cfdc, int command)
+{
+ switch (command) {
+ case ZFCP_CFDC_CMND_DOWNLOAD_NORMAL:
+ fsf_cfdc->command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
+ fsf_cfdc->option = FSF_CFDC_OPTION_NORMAL_MODE;
+ break;
+ case ZFCP_CFDC_CMND_DOWNLOAD_FORCE:
+ fsf_cfdc->command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
+ fsf_cfdc->option = FSF_CFDC_OPTION_FORCE;
+ break;
+ case ZFCP_CFDC_CMND_FULL_ACCESS:
+ fsf_cfdc->command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
+ fsf_cfdc->option = FSF_CFDC_OPTION_FULL_ACCESS;
+ break;
+ case ZFCP_CFDC_CMND_RESTRICTED_ACCESS:
+ fsf_cfdc->command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
+ fsf_cfdc->option = FSF_CFDC_OPTION_RESTRICTED_ACCESS;
+ break;
+ case ZFCP_CFDC_CMND_UPLOAD:
+ fsf_cfdc->command = FSF_QTCB_UPLOAD_CONTROL_FILE;
+ fsf_cfdc->option = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int zfcp_cfdc_sg_setup(int command, struct scatterlist *sg,
+ u8 __user *control_file)
+{
+ int retval;
+ retval = zfcp_sg_setup_table(sg, ZFCP_CFDC_PAGES);
+ if (retval)
+ return retval;
+
+ sg[ZFCP_CFDC_PAGES - 1].length = ZFCP_CFDC_MAX_SIZE % PAGE_SIZE;
+
+ if (command & ZFCP_CFDC_WITH_CONTROL_FILE &&
+ command & ZFCP_CFDC_DOWNLOAD) {
+ retval = zfcp_cfdc_copy_from_user(sg, control_file);
+ if (retval) {
+ zfcp_sg_free_table(sg, ZFCP_CFDC_PAGES);
+ return -EFAULT;
+ }
+ }
+
+ return 0;
+}
+
+static void zfcp_cfdc_req_to_sense(struct zfcp_cfdc_data *data,
+ struct zfcp_fsf_req *req)
+{
+ data->fsf_status = req->qtcb->header.fsf_status;
+ memcpy(&data->fsf_status_qual, &req->qtcb->header.fsf_status_qual,
+ sizeof(union fsf_status_qual));
+ memcpy(&data->payloads, &req->qtcb->bottom.support.els,
+ sizeof(req->qtcb->bottom.support.els));
+}
+
+static long zfcp_cfdc_dev_ioctl(struct file *file, unsigned int command,
+ unsigned long buffer)
+{
+ struct zfcp_cfdc_data *data;
+ struct zfcp_cfdc_data __user *data_user;
+ struct zfcp_adapter *adapter;
+ struct zfcp_fsf_req *req;
+ struct zfcp_fsf_cfdc *fsf_cfdc;
+ int retval;
+
+ if (command != ZFCP_CFDC_IOC)
+ return -ENOTTY;
+
+ data_user = (void __user *) buffer;
+ if (!data_user)
+ return -EINVAL;
+
+ fsf_cfdc = kmalloc(sizeof(struct zfcp_fsf_cfdc), GFP_KERNEL);
+ if (!fsf_cfdc)
+ return -ENOMEM;
+
+ data = kmalloc(sizeof(struct zfcp_cfdc_data), GFP_KERNEL);
+ if (!data) {
+ retval = -ENOMEM;
+ goto no_mem_sense;
+ }
+
+ retval = copy_from_user(data, data_user, sizeof(*data));
+ if (retval) {
+ retval = -EFAULT;
+ goto free_buffer;
+ }
+
+ if (data->signature != 0xCFDCACDF) {
+ retval = -EINVAL;
+ goto free_buffer;
+ }
+
+ retval = zfcp_cfdc_set_fsf(fsf_cfdc, data->command);
+
+ adapter = zfcp_cfdc_get_adapter(data->devno);
+ if (!adapter) {
+ retval = -ENXIO;
+ goto free_buffer;
+ }
+
+ retval = zfcp_cfdc_sg_setup(data->command, fsf_cfdc->sg,
+ data_user->control_file);
+ if (retval)
+ goto adapter_put;
+ req = zfcp_fsf_control_file(adapter, fsf_cfdc);
+ if (IS_ERR(req)) {
+ retval = PTR_ERR(req);
+ goto free_sg;
+ }
+
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
+ retval = -ENXIO;
+ goto free_fsf;
+ }
+
+ zfcp_cfdc_req_to_sense(data, req);
+ retval = copy_to_user(data_user, data, sizeof(*data_user));
+ if (retval) {
+ retval = -EFAULT;
+ goto free_fsf;
+ }
+
+ if (data->command & ZFCP_CFDC_UPLOAD)
+ retval = zfcp_cfdc_copy_to_user(&data_user->control_file,
+ fsf_cfdc->sg);
+
+ free_fsf:
+ zfcp_fsf_req_free(req);
+ free_sg:
+ zfcp_sg_free_table(fsf_cfdc->sg, ZFCP_CFDC_PAGES);
+ adapter_put:
+ zfcp_adapter_put(adapter);
+ free_buffer:
+ kfree(data);
+ no_mem_sense:
+ kfree(fsf_cfdc);
+ return retval;
+}
+
+static const struct file_operations zfcp_cfdc_fops = {
+ .unlocked_ioctl = zfcp_cfdc_dev_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = zfcp_cfdc_dev_ioctl
+#endif
+};
+
+struct miscdevice zfcp_cfdc_misc = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "zfcp_cfdc",
+ .fops = &zfcp_cfdc_fops,
+};
diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c
index c8bad675dbd..36169c6944f 100644
--- a/drivers/s390/scsi/zfcp_dbf.c
+++ b/drivers/s390/scsi/zfcp_dbf.c
@@ -1,22 +1,9 @@
/*
- * This file is part of the zfcp device driver for
- * FCP adapters for IBM System z9 and zSeries.
+ * zfcp device driver
*
- * (C) Copyright IBM Corp. 2002, 2006
+ * Debug traces for zfcp.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Copyright IBM Corporation 2002, 2008
*/
#include <linux/ctype.h>
@@ -29,8 +16,6 @@ module_param(dbfsize, uint, 0400);
MODULE_PARM_DESC(dbfsize,
"number of pages for each debug feature area (default 4)");
-#define ZFCP_LOG_AREA ZFCP_LOG_AREA_OTHER
-
static void zfcp_dbf_hexdump(debug_info_t *dbf, void *to, int to_len,
int level, char *from, int from_len)
{
@@ -186,8 +171,8 @@ void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE);
response->fsf_req_status = fsf_req->status;
response->sbal_first = fsf_req->sbal_first;
- response->sbal_curr = fsf_req->sbal_curr;
response->sbal_last = fsf_req->sbal_last;
+ response->sbal_response = fsf_req->sbal_response;
response->pool = fsf_req->pool != NULL;
response->erp_action = (unsigned long)fsf_req->erp_action;
@@ -268,7 +253,7 @@ void zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE);
strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE);
- rec->u.status.failed = adapter->status_read_failed;
+ rec->u.status.failed = atomic_read(&adapter->stat_miss);
if (status_buffer != NULL) {
rec->u.status.status_type = status_buffer->status_type;
rec->u.status.status_subtype = status_buffer->status_subtype;
@@ -355,8 +340,8 @@ static void zfcp_hba_dbf_view_response(char **p,
FSF_STATUS_QUALIFIER_SIZE, 0, FSF_STATUS_QUALIFIER_SIZE);
zfcp_dbf_out(p, "fsf_req_status", "0x%08x", r->fsf_req_status);
zfcp_dbf_out(p, "sbal_first", "0x%02x", r->sbal_first);
- zfcp_dbf_out(p, "sbal_curr", "0x%02x", r->sbal_curr);
zfcp_dbf_out(p, "sbal_last", "0x%02x", r->sbal_last);
+ zfcp_dbf_out(p, "sbal_response", "0x%02x", r->sbal_response);
zfcp_dbf_out(p, "pool", "0x%02x", r->pool);
switch (r->fsf_command) {
@@ -515,13 +500,13 @@ static const char *zfcp_rec_dbf_ids[] = {
[52] = "port boxed close unit",
[53] = "port boxed fcp",
[54] = "unit boxed fcp",
- [55] = "port access denied ct",
- [56] = "port access denied els",
- [57] = "port access denied open port",
- [58] = "port access denied close physical",
- [59] = "unit access denied open unit",
+ [55] = "port access denied",
+ [56] = "",
+ [57] = "",
+ [58] = "",
+ [59] = "unit access denied",
[60] = "shared unit access denied open unit",
- [61] = "unit access denied fcp",
+ [61] = "",
[62] = "request timeout",
[63] = "adisc link test reject or timeout",
[64] = "adisc link test d_id changed",
@@ -546,8 +531,8 @@ static const char *zfcp_rec_dbf_ids[] = {
[80] = "exclusive read-only unit access unsupported",
[81] = "shared read-write unit access unsupported",
[82] = "incoming rscn",
- [83] = "incoming plogi",
- [84] = "incoming logo",
+ [83] = "incoming wwpn",
+ [84] = "",
[85] = "online",
[86] = "offline",
[87] = "ccw device gone",
@@ -586,8 +571,8 @@ static const char *zfcp_rec_dbf_ids[] = {
[120] = "unknown fsf command",
[121] = "no recommendation for status qualifier",
[122] = "status read physical port closed in error",
- [123] = "fc service class not supported ct",
- [124] = "fc service class not supported els",
+ [123] = "fc service class not supported",
+ [124] = "",
[125] = "need newer zfcp",
[126] = "need newer microcode",
[127] = "arbitrated loop not supported",
@@ -595,7 +580,7 @@ static const char *zfcp_rec_dbf_ids[] = {
[129] = "qtcb size mismatch",
[130] = "unknown fsf status ecd",
[131] = "fcp request too big",
- [132] = "fc service class not supported fcp",
+ [132] = "",
[133] = "data direction not valid fcp",
[134] = "command length not valid fcp",
[135] = "status read act update",
@@ -603,13 +588,18 @@ static const char *zfcp_rec_dbf_ids[] = {
[137] = "hbaapi port open",
[138] = "hbaapi unit open",
[139] = "hbaapi unit shutdown",
- [140] = "qdio error",
+ [140] = "qdio error outbound",
[141] = "scsi host reset",
[142] = "dismissing fsf request for recovery action",
[143] = "recovery action timed out",
[144] = "recovery action gone",
[145] = "recovery action being processed",
[146] = "recovery action ready for next step",
+ [147] = "qdio error inbound",
+ [148] = "nameserver needed for port scan",
+ [149] = "port scan",
+ [150] = "ptp attach",
+ [151] = "port validation failed",
};
static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view,
@@ -670,24 +660,20 @@ static struct debug_view zfcp_rec_dbf_view = {
* zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
* @id2: identifier for event
* @adapter: adapter
- * @lock: non-zero value indicates that erp_lock has not yet been acquired
+ * This function assumes that the caller is holding erp_lock.
*/
-void zfcp_rec_dbf_event_thread(u8 id2, struct zfcp_adapter *adapter, int lock)
+void zfcp_rec_dbf_event_thread(u8 id2, struct zfcp_adapter *adapter)
{
struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
unsigned long flags = 0;
struct list_head *entry;
unsigned ready = 0, running = 0, total;
- if (lock)
- read_lock_irqsave(&adapter->erp_lock, flags);
list_for_each(entry, &adapter->erp_ready_head)
ready++;
list_for_each(entry, &adapter->erp_running_head)
running++;
total = adapter->erp_total_count;
- if (lock)
- read_unlock_irqrestore(&adapter->erp_lock, flags);
spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
memset(r, 0, sizeof(*r));
@@ -696,10 +682,25 @@ void zfcp_rec_dbf_event_thread(u8 id2, struct zfcp_adapter *adapter, int lock)
r->u.thread.total = total;
r->u.thread.ready = ready;
r->u.thread.running = running;
- debug_event(adapter->rec_dbf, 5, r, sizeof(*r));
+ debug_event(adapter->rec_dbf, 6, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
}
+/**
+ * zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
+ * @id2: identifier for event
+ * @adapter: adapter
+ * This function assumes that the caller does not hold erp_lock.
+ */
+void zfcp_rec_dbf_event_thread_lock(u8 id2, struct zfcp_adapter *adapter)
+{
+ unsigned long flags;
+
+ read_lock_irqsave(&adapter->erp_lock, flags);
+ zfcp_rec_dbf_event_thread(id2, adapter);
+ read_unlock_irqrestore(&adapter->erp_lock, flags);
+}
+
static void zfcp_rec_dbf_event_target(u8 id2, void *ref,
struct zfcp_adapter *adapter,
atomic_t *status, atomic_t *erp_count,
@@ -823,7 +824,7 @@ void zfcp_rec_dbf_event_action(u8 id2, struct zfcp_erp_action *erp_action)
r->u.action.status = erp_action->status;
r->u.action.step = erp_action->step;
r->u.action.fsf_req = (unsigned long)erp_action->fsf_req;
- debug_event(adapter->rec_dbf, 4, r, sizeof(*r));
+ debug_event(adapter->rec_dbf, 5, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
}
@@ -960,7 +961,7 @@ void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req)
zfcp_san_dbf_event_els("iels", 1, fsf_req, buf->d_id,
fc_host_port_id(adapter->scsi_host),
- *(u8 *)buf->payload, (void *)buf->payload,
+ buf->payload.data[0], (void *)buf->payload.data,
length);
}
@@ -1064,8 +1065,7 @@ static void zfcp_scsi_dbf_event(const char *tag, const char *tag2, int level,
if (fsf_req != NULL) {
fcp_rsp = (struct fcp_rsp_iu *)
&(fsf_req->qtcb->bottom.io.fcp_rsp);
- fcp_rsp_info =
- zfcp_get_fcp_rsp_info_ptr(fcp_rsp);
+ fcp_rsp_info = (unsigned char *) &fcp_rsp[1];
fcp_sns_info =
zfcp_get_fcp_sns_info_ptr(fcp_rsp);
@@ -1279,5 +1279,3 @@ void zfcp_adapter_debug_unregister(struct zfcp_adapter *adapter)
adapter->hba_dbf = NULL;
adapter->rec_dbf = NULL;
}
-
-#undef ZFCP_LOG_AREA
diff --git a/drivers/s390/scsi/zfcp_dbf.h b/drivers/s390/scsi/zfcp_dbf.h
index 54c34e48345..d04aea60497 100644
--- a/drivers/s390/scsi/zfcp_dbf.h
+++ b/drivers/s390/scsi/zfcp_dbf.h
@@ -38,7 +38,7 @@ struct zfcp_rec_dbf_record_thread {
u32 total;
u32 ready;
u32 running;
-} __attribute__ ((packed));
+};
struct zfcp_rec_dbf_record_target {
u64 ref;
@@ -47,7 +47,7 @@ struct zfcp_rec_dbf_record_target {
u64 wwpn;
u64 fcp_lun;
u32 erp_count;
-} __attribute__ ((packed));
+};
struct zfcp_rec_dbf_record_trigger {
u8 want;
@@ -59,14 +59,14 @@ struct zfcp_rec_dbf_record_trigger {
u64 action;
u64 wwpn;
u64 fcp_lun;
-} __attribute__ ((packed));
+};
struct zfcp_rec_dbf_record_action {
u32 status;
u32 step;
u64 action;
u64 fsf_req;
-} __attribute__ ((packed));
+};
struct zfcp_rec_dbf_record {
u8 id;
@@ -77,7 +77,7 @@ struct zfcp_rec_dbf_record {
struct zfcp_rec_dbf_record_target target;
struct zfcp_rec_dbf_record_trigger trigger;
} u;
-} __attribute__ ((packed));
+};
enum {
ZFCP_REC_DBF_ID_ACTION,
@@ -97,8 +97,8 @@ struct zfcp_hba_dbf_record_response {
u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE];
u32 fsf_req_status;
u8 sbal_first;
- u8 sbal_curr;
u8 sbal_last;
+ u8 sbal_response;
u8 pool;
u64 erp_action;
union {
diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index bda8c77b22d..67f45fc62f5 100644
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -1,22 +1,9 @@
/*
- * This file is part of the zfcp device driver for
- * FCP adapters for IBM System z9 and zSeries.
+ * zfcp device driver
*
- * (C) Copyright IBM Corp. 2002, 2006
+ * Global definitions for the zfcp device driver.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Copyright IBM Corporation 2002, 2008
*/
#ifndef ZFCP_DEF_H
@@ -26,7 +13,6 @@
#include <linux/init.h>
#include <linux/moduleparam.h>
-#include <linux/miscdevice.h>
#include <linux/major.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
@@ -53,9 +39,6 @@
/********************* GENERAL DEFINES *********************************/
-/* zfcp version number, it consists of major, minor, and patch-level number */
-#define ZFCP_VERSION "4.8.0"
-
/**
* zfcp_sg_to_address - determine kernel address from struct scatterlist
* @list: struct scatterlist
@@ -93,11 +76,6 @@ zfcp_address_to_sg(void *address, struct scatterlist *list, unsigned int size)
#define ZFCP_DEVICE_MODEL 0x03
#define ZFCP_DEVICE_MODEL_PRIV 0x04
-/* allow as many chained SBALs as are supported by hardware */
-#define ZFCP_MAX_SBALS_PER_REQ FSF_MAX_SBALS_PER_REQ
-#define ZFCP_MAX_SBALS_PER_CT_REQ FSF_MAX_SBALS_PER_REQ
-#define ZFCP_MAX_SBALS_PER_ELS_REQ FSF_MAX_SBALS_PER_ELS_REQ
-
/* DMQ bug workaround: don't use last SBALE */
#define ZFCP_MAX_SBALES_PER_SBAL (QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
@@ -106,42 +84,17 @@ zfcp_address_to_sg(void *address, struct scatterlist *list, unsigned int size)
/* max. number of (data buffer) SBALEs in largest SBAL chain */
#define ZFCP_MAX_SBALES_PER_REQ \
- (ZFCP_MAX_SBALS_PER_REQ * ZFCP_MAX_SBALES_PER_SBAL - 2)
+ (FSF_MAX_SBALS_PER_REQ * ZFCP_MAX_SBALES_PER_SBAL - 2)
/* request ID + QTCB in SBALE 0 + 1 of first SBAL in chain */
#define ZFCP_MAX_SECTORS (ZFCP_MAX_SBALES_PER_REQ * 8)
/* max. number of (data buffer) SBALEs in largest SBAL chain
multiplied with number of sectors per 4k block */
-/* FIXME(tune): free space should be one max. SBAL chain plus what? */
-#define ZFCP_QDIO_PCI_INTERVAL (QDIO_MAX_BUFFERS_PER_Q \
- - (ZFCP_MAX_SBALS_PER_REQ + 4))
-
-#define ZFCP_SBAL_TIMEOUT (5*HZ)
-
-#define ZFCP_TYPE2_RECOVERY_TIME 8 /* seconds */
-
-/* queue polling (values in microseconds) */
-#define ZFCP_MAX_INPUT_THRESHOLD 5000 /* FIXME: tune */
-#define ZFCP_MAX_OUTPUT_THRESHOLD 1000 /* FIXME: tune */
-#define ZFCP_MIN_INPUT_THRESHOLD 1 /* ignored by QDIO layer */
-#define ZFCP_MIN_OUTPUT_THRESHOLD 1 /* ignored by QDIO layer */
-
-#define QDIO_SCSI_QFMT 1 /* 1 for FSF */
-#define QBUFF_PER_PAGE (PAGE_SIZE / sizeof(struct qdio_buffer))
-
/********************* FSF SPECIFIC DEFINES *********************************/
-#define ZFCP_ULP_INFO_VERSION 26
-#define ZFCP_QTCB_VERSION FSF_QTCB_CURRENT_VERSION
/* ATTENTION: value must not be used by hardware */
#define FSF_QTCB_UNSOLICITED_STATUS 0x6305
-#define ZFCP_STATUS_READ_FAILED_THRESHOLD 3
-#define ZFCP_STATUS_READS_RECOM FSF_STATUS_READS_RECOM
-
-/* Do 1st retry in 1 second, then double the timeout for each following retry */
-#define ZFCP_EXCHANGE_CONFIG_DATA_FIRST_SLEEP 1
-#define ZFCP_EXCHANGE_CONFIG_DATA_RETRIES 7
/* timeout value for "default timer" for fsf requests */
#define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ)
@@ -153,17 +106,9 @@ typedef unsigned long long fcp_lun_t;
/* data length field may be at variable position in FCP-2 FCP_CMND IU */
typedef unsigned int fcp_dl_t;
-#define ZFCP_FC_SERVICE_CLASS_DEFAULT FSF_CLASS_3
-
/* timeout for name-server lookup (in seconds) */
#define ZFCP_NS_GID_PN_TIMEOUT 10
-/* largest SCSI command we can process */
-/* FCP-2 (FCP_CMND IU) allows up to (255-3+16) */
-#define ZFCP_MAX_SCSI_CMND_LENGTH 255
-/* maximum number of commands in LUN queue (tagged queueing) */
-#define ZFCP_CMND_PER_LUN 32
-
/* task attribute values in FCP-2 FCP_CMND IU */
#define SIMPLE_Q 0
#define HEAD_OF_Q 1
@@ -224,9 +169,9 @@ struct fcp_rsp_iu {
#define RSP_CODE_TASKMAN_FAILED 5
/* see fc-fs */
-#define LS_RSCN 0x61040000
-#define LS_LOGO 0x05000000
-#define LS_PLOGI 0x03000000
+#define LS_RSCN 0x61
+#define LS_LOGO 0x05
+#define LS_PLOGI 0x03
struct fcp_rscn_head {
u8 command;
@@ -266,7 +211,6 @@ struct fcp_logo {
* FC-FS stuff
*/
#define R_A_TOV 10 /* seconds */
-#define ZFCP_ELS_TIMEOUT (2 * R_A_TOV)
#define ZFCP_LS_RLS 0x0f
#define ZFCP_LS_ADISC 0x52
@@ -311,7 +255,10 @@ struct zfcp_rc_entry {
#define ZFCP_CT_DIRECTORY_SERVICE 0xFC
#define ZFCP_CT_NAME_SERVER 0x02
#define ZFCP_CT_SYNCHRONOUS 0x00
+#define ZFCP_CT_SCSI_FCP 0x08
+#define ZFCP_CT_UNABLE_TO_PERFORM_CMD 0x09
#define ZFCP_CT_GID_PN 0x0121
+#define ZFCP_CT_GPN_FT 0x0172
#define ZFCP_CT_MAX_SIZE 0x1020
#define ZFCP_CT_ACCEPT 0x8002
#define ZFCP_CT_REJECT 0x8001
@@ -321,107 +268,6 @@ struct zfcp_rc_entry {
*/
#define ZFCP_CT_TIMEOUT (3 * R_A_TOV)
-/******************** LOGGING MACROS AND DEFINES *****************************/
-
-/*
- * Logging may be applied on certain kinds of driver operations
- * independently. Additionally, different log-levels are supported for
- * each of these areas.
- */
-
-#define ZFCP_NAME "zfcp"
-
-/* independent log areas */
-#define ZFCP_LOG_AREA_OTHER 0
-#define ZFCP_LOG_AREA_SCSI 1
-#define ZFCP_LOG_AREA_FSF 2
-#define ZFCP_LOG_AREA_CONFIG 3
-#define ZFCP_LOG_AREA_CIO 4
-#define ZFCP_LOG_AREA_QDIO 5
-#define ZFCP_LOG_AREA_ERP 6
-#define ZFCP_LOG_AREA_FC 7
-
-/* log level values*/
-#define ZFCP_LOG_LEVEL_NORMAL 0
-#define ZFCP_LOG_LEVEL_INFO 1
-#define ZFCP_LOG_LEVEL_DEBUG 2
-#define ZFCP_LOG_LEVEL_TRACE 3
-
-/*
- * this allows removal of logging code by the preprocessor
- * (the most detailed log level still to be compiled in is specified,
- * higher log levels are removed)
- */
-#define ZFCP_LOG_LEVEL_LIMIT ZFCP_LOG_LEVEL_TRACE
-
-/* get "loglevel" nibble assignment */
-#define ZFCP_GET_LOG_VALUE(zfcp_lognibble) \
- ((atomic_read(&zfcp_data.loglevel) >> (zfcp_lognibble<<2)) & 0xF)
-
-/* set "loglevel" nibble */
-#define ZFCP_SET_LOG_NIBBLE(value, zfcp_lognibble) \
- (value << (zfcp_lognibble << 2))
-
-/* all log-level defaults are combined to generate initial log-level */
-#define ZFCP_LOG_LEVEL_DEFAULTS \
- (ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_OTHER) | \
- ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_SCSI) | \
- ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_FSF) | \
- ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_CONFIG) | \
- ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_CIO) | \
- ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_QDIO) | \
- ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_ERP) | \
- ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_FC))
-
-/* check whether we have the right level for logging */
-#define ZFCP_LOG_CHECK(level) \
- ((ZFCP_GET_LOG_VALUE(ZFCP_LOG_AREA)) >= level)
-
-/* logging routine for zfcp */
-#define _ZFCP_LOG(fmt, args...) \
- printk(KERN_ERR ZFCP_NAME": %s(%d): " fmt, __func__, \
- __LINE__ , ##args)
-
-#define ZFCP_LOG(level, fmt, args...) \
-do { \
- if (ZFCP_LOG_CHECK(level)) \
- _ZFCP_LOG(fmt, ##args); \
-} while (0)
-
-#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_NORMAL
-# define ZFCP_LOG_NORMAL(fmt, args...) do { } while (0)
-#else
-# define ZFCP_LOG_NORMAL(fmt, args...) \
-do { \
- if (ZFCP_LOG_CHECK(ZFCP_LOG_LEVEL_NORMAL)) \
- printk(KERN_ERR ZFCP_NAME": " fmt, ##args); \
-} while (0)
-#endif
-
-#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_INFO
-# define ZFCP_LOG_INFO(fmt, args...) do { } while (0)
-#else
-# define ZFCP_LOG_INFO(fmt, args...) \
-do { \
- if (ZFCP_LOG_CHECK(ZFCP_LOG_LEVEL_INFO)) \
- printk(KERN_ERR ZFCP_NAME": " fmt, ##args); \
-} while (0)
-#endif
-
-#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_DEBUG
-# define ZFCP_LOG_DEBUG(fmt, args...) do { } while (0)
-#else
-# define ZFCP_LOG_DEBUG(fmt, args...) \
- ZFCP_LOG(ZFCP_LOG_LEVEL_DEBUG, fmt , ##args)
-#endif
-
-#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_TRACE
-# define ZFCP_LOG_TRACE(fmt, args...) do { } while (0)
-#else
-# define ZFCP_LOG_TRACE(fmt, args...) \
- ZFCP_LOG(ZFCP_LOG_LEVEL_TRACE, fmt , ##args)
-#endif
-
/*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/
/*
@@ -441,6 +287,7 @@ do { \
#define ZFCP_STATUS_COMMON_ERP_INUSE 0x01000000
#define ZFCP_STATUS_COMMON_ACCESS_DENIED 0x00800000
#define ZFCP_STATUS_COMMON_ACCESS_BOXED 0x00400000
+#define ZFCP_STATUS_COMMON_NOESC 0x00200000
/* adapter status */
#define ZFCP_STATUS_ADAPTER_QDIOUP 0x00000002
@@ -496,77 +343,6 @@ do { \
#define ZFCP_STATUS_FSFREQ_RETRY 0x00000800
#define ZFCP_STATUS_FSFREQ_DISMISSED 0x00001000
-/*********************** ERROR RECOVERY PROCEDURE DEFINES ********************/
-
-#define ZFCP_MAX_ERPS 3
-
-#define ZFCP_ERP_FSFREQ_TIMEOUT (30 * HZ)
-#define ZFCP_ERP_MEMWAIT_TIMEOUT HZ
-
-#define ZFCP_STATUS_ERP_TIMEDOUT 0x10000000
-#define ZFCP_STATUS_ERP_CLOSE_ONLY 0x01000000
-#define ZFCP_STATUS_ERP_DISMISSING 0x00100000
-#define ZFCP_STATUS_ERP_DISMISSED 0x00200000
-#define ZFCP_STATUS_ERP_LOWMEM 0x00400000
-
-#define ZFCP_ERP_STEP_UNINITIALIZED 0x00000000
-#define ZFCP_ERP_STEP_FSF_XCONFIG 0x00000001
-#define ZFCP_ERP_STEP_PHYS_PORT_CLOSING 0x00000010
-#define ZFCP_ERP_STEP_PORT_CLOSING 0x00000100
-#define ZFCP_ERP_STEP_NAMESERVER_OPEN 0x00000200
-#define ZFCP_ERP_STEP_NAMESERVER_LOOKUP 0x00000400
-#define ZFCP_ERP_STEP_PORT_OPENING 0x00000800
-#define ZFCP_ERP_STEP_UNIT_CLOSING 0x00001000
-#define ZFCP_ERP_STEP_UNIT_OPENING 0x00002000
-
-/* Ordered by escalation level (necessary for proper erp-code operation) */
-#define ZFCP_ERP_ACTION_REOPEN_ADAPTER 0x4
-#define ZFCP_ERP_ACTION_REOPEN_PORT_FORCED 0x3
-#define ZFCP_ERP_ACTION_REOPEN_PORT 0x2
-#define ZFCP_ERP_ACTION_REOPEN_UNIT 0x1
-
-#define ZFCP_ERP_ACTION_RUNNING 0x1
-#define ZFCP_ERP_ACTION_READY 0x2
-
-#define ZFCP_ERP_SUCCEEDED 0x0
-#define ZFCP_ERP_FAILED 0x1
-#define ZFCP_ERP_CONTINUES 0x2
-#define ZFCP_ERP_EXIT 0x3
-#define ZFCP_ERP_DISMISSED 0x4
-#define ZFCP_ERP_NOMEM 0x5
-
-
-/******************** CFDC SPECIFIC STUFF *****************************/
-
-/* Firewall data channel sense data record */
-struct zfcp_cfdc_sense_data {
- u32 signature; /* Request signature */
- u32 devno; /* FCP adapter device number */
- u32 command; /* Command code */
- u32 fsf_status; /* FSF request status and status qualifier */
- u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE];
- u8 payloads[256]; /* Access conflicts list */
- u8 control_file[0]; /* Access control table */
-};
-
-#define ZFCP_CFDC_SIGNATURE 0xCFDCACDF
-
-#define ZFCP_CFDC_CMND_DOWNLOAD_NORMAL 0x00010001
-#define ZFCP_CFDC_CMND_DOWNLOAD_FORCE 0x00010101
-#define ZFCP_CFDC_CMND_FULL_ACCESS 0x00000201
-#define ZFCP_CFDC_CMND_RESTRICTED_ACCESS 0x00000401
-#define ZFCP_CFDC_CMND_UPLOAD 0x00010002
-
-#define ZFCP_CFDC_DOWNLOAD 0x00000001
-#define ZFCP_CFDC_UPLOAD 0x00000002
-#define ZFCP_CFDC_WITH_CONTROL_FILE 0x00010000
-
-#define ZFCP_CFDC_DEV_NAME "zfcp_cfdc"
-#define ZFCP_CFDC_DEV_MAJOR MISC_MAJOR
-#define ZFCP_CFDC_DEV_MINOR MISC_DYNAMIC_MINOR
-
-#define ZFCP_CFDC_MAX_CONTROL_FILE_SIZE 127 * 1024
-
/************************* STRUCTURE DEFINITIONS *****************************/
struct zfcp_fsf_req;
@@ -623,7 +399,6 @@ typedef void (*zfcp_send_ct_handler_t)(unsigned long);
* @resp_count: number of elements in response scatter-gather list
* @handler: handler function (called for response to the request)
* @handler_data: data passed to handler function
- * @pool: pointer to memory pool for ct request structure
* @timeout: FSF timeout for this request
* @completion: completion for synchronization purposes
* @status: used to pass error status to calling function
@@ -636,7 +411,6 @@ struct zfcp_send_ct {
unsigned int resp_count;
zfcp_send_ct_handler_t handler;
unsigned long handler_data;
- mempool_t *pool;
int timeout;
struct completion *completion;
int status;
@@ -685,13 +459,13 @@ struct zfcp_send_els {
};
struct zfcp_qdio_queue {
- struct qdio_buffer *buffer[QDIO_MAX_BUFFERS_PER_Q]; /* SBALs */
- u8 free_index; /* index of next free bfr
+ struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q]; /* SBALs */
+ u8 first; /* index of next free bfr
in queue (free_count>0) */
- atomic_t free_count; /* number of free buffers
+ atomic_t count; /* number of free buffers
in queue */
- rwlock_t queue_lock; /* lock for operations on queue */
- int distance_from_int; /* SBALs used since PCI indication
+ spinlock_t lock; /* lock for operations on queue */
+ int pci_batch; /* SBALs since PCI indication
was last set */
};
@@ -708,6 +482,24 @@ struct zfcp_erp_action {
struct timer_list timer;
};
+struct fsf_latency_record {
+ u32 min;
+ u32 max;
+ u64 sum;
+};
+
+struct latency_cont {
+ struct fsf_latency_record channel;
+ struct fsf_latency_record fabric;
+ u64 counter;
+};
+
+struct zfcp_latencies {
+ struct latency_cont read;
+ struct latency_cont write;
+ struct latency_cont cmd;
+ spinlock_t lock;
+};
struct zfcp_adapter {
struct list_head list; /* list of adapters */
@@ -723,24 +515,25 @@ struct zfcp_adapter {
u32 adapter_features; /* FCP channel features */
u32 connection_features; /* host connection features */
u32 hardware_version; /* of FCP channel */
+ u16 timer_ticks; /* time int for a tick */
struct Scsi_Host *scsi_host; /* Pointer to mid-layer */
struct list_head port_list_head; /* remote port list */
struct list_head port_remove_lh; /* head of ports to be
removed */
u32 ports; /* number of remote ports */
- atomic_t reqs_active; /* # active FSF reqs */
unsigned long req_no; /* unique FSF req number */
struct list_head *req_list; /* list of pending reqs */
spinlock_t req_list_lock; /* request list lock */
- struct zfcp_qdio_queue request_queue; /* request queue */
+ struct zfcp_qdio_queue req_q; /* request queue */
u32 fsf_req_seq_no; /* FSF cmnd seq number */
wait_queue_head_t request_wq; /* can be used to wait for
more avaliable SBALs */
- struct zfcp_qdio_queue response_queue; /* response queue */
+ struct zfcp_qdio_queue resp_q; /* response queue */
rwlock_t abort_lock; /* Protects against SCSI
stack abort/command
completion races */
- u16 status_read_failed; /* # failed status reads */
+ atomic_t stat_miss; /* # missing status reads*/
+ struct work_struct stat_work;
atomic_t status; /* status of this adapter */
struct list_head erp_ready_head; /* error recovery for this
adapter/devices */
@@ -774,13 +567,9 @@ struct zfcp_adapter {
struct fc_host_statistics *fc_stats;
struct fsf_qtcb_bottom_port *stats_reset_data;
unsigned long stats_reset;
+ struct work_struct scan_work;
};
-/*
- * the struct device sysfs_device must be at the beginning of this structure.
- * pointer to struct device is used to free port structure in release function
- * of the device. don't change!
- */
struct zfcp_port {
struct device sysfs_device; /* sysfs device */
struct fc_rport *rport; /* rport of fc transport class */
@@ -804,10 +593,6 @@ struct zfcp_port {
u32 supported_classes;
};
-/* the struct device sysfs_device must be at the beginning of this structure.
- * pointer to struct device is used to free unit structure in release function
- * of the device. don't change!
- */
struct zfcp_unit {
struct device sysfs_device; /* sysfs device */
struct list_head list; /* list of logical units */
@@ -822,6 +607,7 @@ struct zfcp_unit {
struct scsi_device *device; /* scsi device struct pointer */
struct zfcp_erp_action erp_action; /* pending error recovery */
atomic_t erp_counter;
+ struct zfcp_latencies latencies;
};
/* FSF request */
@@ -831,19 +617,19 @@ struct zfcp_fsf_req {
struct zfcp_adapter *adapter; /* adapter request belongs to */
u8 sbal_number; /* nr of SBALs free for use */
u8 sbal_first; /* first SBAL for this request */
- u8 sbal_last; /* last possible SBAL for
+ u8 sbal_last; /* last SBAL for this request */
+ u8 sbal_limit; /* last possible SBAL for
this reuest */
- u8 sbal_curr; /* current SBAL during creation
- of request */
u8 sbale_curr; /* current SBALE during creation
of request */
+ u8 sbal_response; /* SBAL used in interrupt */
wait_queue_head_t completion_wq; /* can be used by a routine
to wait for completion */
volatile u32 status; /* status of this request */
u32 fsf_command; /* FSF Command copy */
struct fsf_qtcb *qtcb; /* address of associated QTCB */
u32 seq_no; /* Sequence number of request */
- unsigned long data; /* private data of request */
+ void *data; /* private data of request */
struct timer_list timer; /* used for erp or scsi er */
struct zfcp_erp_action *erp_action; /* used if this request is
issued on behalf of erp */
@@ -851,10 +637,9 @@ struct zfcp_fsf_req {
from emergency pool */
unsigned long long issued; /* request sent time (STCK) */
struct zfcp_unit *unit;
+ void (*handler)(struct zfcp_fsf_req *);
};
-typedef void zfcp_fsf_req_handler_t(struct zfcp_fsf_req*);
-
/* driver data */
struct zfcp_data {
struct scsi_host_template scsi_host_template;
@@ -873,29 +658,11 @@ struct zfcp_data {
char init_busid[BUS_ID_SIZE];
wwn_t init_wwpn;
fcp_lun_t init_fcp_lun;
- char *driver_version;
struct kmem_cache *fsf_req_qtcb_cache;
struct kmem_cache *sr_buffer_cache;
struct kmem_cache *gid_pn_cache;
};
-/**
- * struct zfcp_sg_list - struct describing a scatter-gather list
- * @sg: pointer to array of (struct scatterlist)
- * @count: number of elements in scatter-gather list
- */
-struct zfcp_sg_list {
- struct scatterlist *sg;
- unsigned int count;
-};
-
-/* number of elements for various memory pools */
-#define ZFCP_POOL_FSF_REQ_ERP_NR 1
-#define ZFCP_POOL_FSF_REQ_SCSI_NR 1
-#define ZFCP_POOL_FSF_REQ_ABORT_NR 1
-#define ZFCP_POOL_STATUS_READ_NR ZFCP_STATUS_READS_RECOM
-#define ZFCP_POOL_DATA_GID_PN_NR 1
-
/* struct used by memory pools for fsf_requests */
struct zfcp_fsf_req_qtcb {
struct zfcp_fsf_req fsf_req;
@@ -905,7 +672,6 @@ struct zfcp_fsf_req_qtcb {
/********************** ZFCP SPECIFIC DEFINES ********************************/
#define ZFCP_REQ_AUTO_CLEANUP 0x00000002
-#define ZFCP_WAIT_FOR_SBAL 0x00000004
#define ZFCP_REQ_NO_QTCB 0x00000008
#define ZFCP_SET 0x00000100
@@ -916,12 +682,6 @@ struct zfcp_fsf_req_qtcb {
((atomic_read(target) & mask) == mask)
#endif
-extern void _zfcp_hex_dump(char *, int);
-#define ZFCP_HEX_DUMP(level, addr, count) \
- if (ZFCP_LOG_CHECK(level)) { \
- _zfcp_hex_dump(addr, count); \
- }
-
#define zfcp_get_busid_by_adapter(adapter) (adapter->ccw_device->dev.bus_id)
#define zfcp_get_busid_by_port(port) (zfcp_get_busid_by_adapter(port->adapter))
#define zfcp_get_busid_by_unit(unit) (zfcp_get_busid_by_port(unit->port))
@@ -934,15 +694,6 @@ static inline int zfcp_reqlist_hash(unsigned long req_id)
return req_id % REQUEST_LIST_SIZE;
}
-static inline void zfcp_reqlist_add(struct zfcp_adapter *adapter,
- struct zfcp_fsf_req *fsf_req)
-{
- unsigned int idx;
-
- idx = zfcp_reqlist_hash(fsf_req->req_id);
- list_add_tail(&fsf_req->list, &adapter->req_list[idx]);
-}
-
static inline void zfcp_reqlist_remove(struct zfcp_adapter *adapter,
struct zfcp_fsf_req *fsf_req)
{
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index 805484658dd..643ac4bba5b 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -1,641 +1,406 @@
/*
- * This file is part of the zfcp device driver for
- * FCP adapters for IBM System z9 and zSeries.
+ * zfcp device driver
*
- * (C) Copyright IBM Corp. 2002, 2006
+ * Error Recovery Procedures (ERP).
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Copyright IBM Corporation 2002, 2008
*/
-#define ZFCP_LOG_AREA ZFCP_LOG_AREA_ERP
-
#include "zfcp_ext.h"
-static int zfcp_erp_adisc(struct zfcp_port *);
-static void zfcp_erp_adisc_handler(unsigned long);
-
-static int zfcp_erp_adapter_reopen_internal(struct zfcp_adapter *, int, u8,
- void *);
-static int zfcp_erp_port_forced_reopen_internal(struct zfcp_port *, int, u8,
- void *);
-static int zfcp_erp_port_reopen_internal(struct zfcp_port *, int, u8, void *);
-static int zfcp_erp_unit_reopen_internal(struct zfcp_unit *, int, u8, void *);
-
-static int zfcp_erp_port_reopen_all_internal(struct zfcp_adapter *, int, u8,
- void *);
-static int zfcp_erp_unit_reopen_all_internal(struct zfcp_port *, int, u8,
- void *);
-
-static void zfcp_erp_adapter_block(struct zfcp_adapter *, int);
-static void zfcp_erp_adapter_unblock(struct zfcp_adapter *);
-static void zfcp_erp_port_block(struct zfcp_port *, int);
-static void zfcp_erp_port_unblock(struct zfcp_port *);
-static void zfcp_erp_unit_block(struct zfcp_unit *, int);
-static void zfcp_erp_unit_unblock(struct zfcp_unit *);
-
-static int zfcp_erp_thread(void *);
-
-static int zfcp_erp_strategy(struct zfcp_erp_action *);
-
-static int zfcp_erp_strategy_do_action(struct zfcp_erp_action *);
-static int zfcp_erp_strategy_memwait(struct zfcp_erp_action *);
-static int zfcp_erp_strategy_check_target(struct zfcp_erp_action *, int);
-static int zfcp_erp_strategy_check_unit(struct zfcp_unit *, int);
-static int zfcp_erp_strategy_check_port(struct zfcp_port *, int);
-static int zfcp_erp_strategy_check_adapter(struct zfcp_adapter *, int);
-static int zfcp_erp_strategy_statechange(int, u32, struct zfcp_adapter *,
- struct zfcp_port *,
- struct zfcp_unit *, int);
-static int zfcp_erp_strategy_statechange_detected(atomic_t *, u32);
-static int zfcp_erp_strategy_followup_actions(int, struct zfcp_adapter *,
- struct zfcp_port *,
- struct zfcp_unit *, int);
-static int zfcp_erp_strategy_check_queues(struct zfcp_adapter *);
-static int zfcp_erp_strategy_check_action(struct zfcp_erp_action *, int);
-
-static int zfcp_erp_adapter_strategy(struct zfcp_erp_action *);
-static int zfcp_erp_adapter_strategy_generic(struct zfcp_erp_action *, int);
-static int zfcp_erp_adapter_strategy_close(struct zfcp_erp_action *);
-static int zfcp_erp_adapter_strategy_open(struct zfcp_erp_action *);
-static int zfcp_erp_adapter_strategy_open_qdio(struct zfcp_erp_action *);
-static int zfcp_erp_adapter_strategy_open_fsf(struct zfcp_erp_action *);
-static int zfcp_erp_adapter_strategy_open_fsf_xconfig(struct zfcp_erp_action *);
-static int zfcp_erp_adapter_strategy_open_fsf_xport(struct zfcp_erp_action *);
-static int zfcp_erp_adapter_strategy_open_fsf_statusread(
- struct zfcp_erp_action *);
-
-static int zfcp_erp_port_forced_strategy(struct zfcp_erp_action *);
-static int zfcp_erp_port_forced_strategy_close(struct zfcp_erp_action *);
-
-static int zfcp_erp_port_strategy(struct zfcp_erp_action *);
-static int zfcp_erp_port_strategy_clearstati(struct zfcp_port *);
-static int zfcp_erp_port_strategy_close(struct zfcp_erp_action *);
-static int zfcp_erp_port_strategy_open(struct zfcp_erp_action *);
-static int zfcp_erp_port_strategy_open_nameserver(struct zfcp_erp_action *);
-static int zfcp_erp_port_strategy_open_nameserver_wakeup(
- struct zfcp_erp_action *);
-static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *);
-static int zfcp_erp_port_strategy_open_common_lookup(struct zfcp_erp_action *);
-static int zfcp_erp_port_strategy_open_port(struct zfcp_erp_action *);
-
-static int zfcp_erp_unit_strategy(struct zfcp_erp_action *);
-static int zfcp_erp_unit_strategy_clearstati(struct zfcp_unit *);
-static int zfcp_erp_unit_strategy_close(struct zfcp_erp_action *);
-static int zfcp_erp_unit_strategy_open(struct zfcp_erp_action *);
-
-static void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *);
-static void zfcp_erp_action_dismiss_port(struct zfcp_port *);
-static void zfcp_erp_action_dismiss_unit(struct zfcp_unit *);
-static void zfcp_erp_action_dismiss(struct zfcp_erp_action *);
-
-static int zfcp_erp_action_enqueue(int, struct zfcp_adapter *,
- struct zfcp_port *, struct zfcp_unit *,
- u8 id, void *ref);
-static int zfcp_erp_action_dequeue(struct zfcp_erp_action *);
-static void zfcp_erp_action_cleanup(int, struct zfcp_adapter *,
- struct zfcp_port *, struct zfcp_unit *,
- int);
-
-static void zfcp_erp_action_ready(struct zfcp_erp_action *);
-static int zfcp_erp_action_exists(struct zfcp_erp_action *);
-
-static void zfcp_erp_action_to_ready(struct zfcp_erp_action *);
-static void zfcp_erp_action_to_running(struct zfcp_erp_action *);
-
-static void zfcp_erp_memwait_handler(unsigned long);
+#define ZFCP_MAX_ERPS 3
-/**
- * zfcp_close_qdio - close qdio queues for an adapter
- */
-static void zfcp_close_qdio(struct zfcp_adapter *adapter)
-{
- struct zfcp_qdio_queue *req_queue;
- int first, count;
+enum zfcp_erp_act_flags {
+ ZFCP_STATUS_ERP_TIMEDOUT = 0x10000000,
+ ZFCP_STATUS_ERP_CLOSE_ONLY = 0x01000000,
+ ZFCP_STATUS_ERP_DISMISSING = 0x00100000,
+ ZFCP_STATUS_ERP_DISMISSED = 0x00200000,
+ ZFCP_STATUS_ERP_LOWMEM = 0x00400000,
+};
- if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status))
- return;
+enum zfcp_erp_steps {
+ ZFCP_ERP_STEP_UNINITIALIZED = 0x0000,
+ ZFCP_ERP_STEP_FSF_XCONFIG = 0x0001,
+ ZFCP_ERP_STEP_PHYS_PORT_CLOSING = 0x0010,
+ ZFCP_ERP_STEP_PORT_CLOSING = 0x0100,
+ ZFCP_ERP_STEP_NAMESERVER_OPEN = 0x0200,
+ ZFCP_ERP_STEP_NAMESERVER_LOOKUP = 0x0400,
+ ZFCP_ERP_STEP_PORT_OPENING = 0x0800,
+ ZFCP_ERP_STEP_UNIT_CLOSING = 0x1000,
+ ZFCP_ERP_STEP_UNIT_OPENING = 0x2000,
+};
- /* clear QDIOUP flag, thus do_QDIO is not called during qdio_shutdown */
- req_queue = &adapter->request_queue;
- write_lock_irq(&req_queue->queue_lock);
- atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status);
- write_unlock_irq(&req_queue->queue_lock);
-
- while (qdio_shutdown(adapter->ccw_device,
- QDIO_FLAG_CLEANUP_USING_CLEAR) == -EINPROGRESS)
- ssleep(1);
-
- /* cleanup used outbound sbals */
- count = atomic_read(&req_queue->free_count);
- if (count < QDIO_MAX_BUFFERS_PER_Q) {
- first = (req_queue->free_index+count) % QDIO_MAX_BUFFERS_PER_Q;
- count = QDIO_MAX_BUFFERS_PER_Q - count;
- zfcp_qdio_zero_sbals(req_queue->buffer, first, count);
- }
- req_queue->free_index = 0;
- atomic_set(&req_queue->free_count, 0);
- req_queue->distance_from_int = 0;
- adapter->response_queue.free_index = 0;
- atomic_set(&adapter->response_queue.free_count, 0);
+enum zfcp_erp_act_type {
+ ZFCP_ERP_ACTION_REOPEN_UNIT = 1,
+ ZFCP_ERP_ACTION_REOPEN_PORT = 2,
+ ZFCP_ERP_ACTION_REOPEN_PORT_FORCED = 3,
+ ZFCP_ERP_ACTION_REOPEN_ADAPTER = 4,
+};
+
+enum zfcp_erp_act_state {
+ ZFCP_ERP_ACTION_RUNNING = 1,
+ ZFCP_ERP_ACTION_READY = 2,
+};
+
+enum zfcp_erp_act_result {
+ ZFCP_ERP_SUCCEEDED = 0,
+ ZFCP_ERP_FAILED = 1,
+ ZFCP_ERP_CONTINUES = 2,
+ ZFCP_ERP_EXIT = 3,
+ ZFCP_ERP_DISMISSED = 4,
+ ZFCP_ERP_NOMEM = 5,
+};
+
+static void zfcp_erp_adapter_block(struct zfcp_adapter *adapter, int mask)
+{
+ zfcp_erp_modify_adapter_status(adapter, 15, NULL,
+ ZFCP_STATUS_COMMON_UNBLOCKED | mask,
+ ZFCP_CLEAR);
}
-/**
- * zfcp_close_fsf - stop FSF operations for an adapter
- *
- * Dismiss and cleanup all pending fsf_reqs (this wakes up all initiators of
- * requests waiting for completion; especially this returns SCSI commands
- * with error state).
- */
-static void zfcp_close_fsf(struct zfcp_adapter *adapter)
+static int zfcp_erp_action_exists(struct zfcp_erp_action *act)
{
- /* close queues to ensure that buffers are not accessed by adapter */
- zfcp_close_qdio(adapter);
- zfcp_fsf_req_dismiss_all(adapter);
- /* reset FSF request sequence number */
- adapter->fsf_req_seq_no = 0;
- /* all ports and units are closed */
- zfcp_erp_modify_adapter_status(adapter, 24, NULL,
- ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR);
+ struct zfcp_erp_action *curr_act;
+
+ list_for_each_entry(curr_act, &act->adapter->erp_running_head, list)
+ if (act == curr_act)
+ return ZFCP_ERP_ACTION_RUNNING;
+ return 0;
}
-/**
- * zfcp_fsf_request_timeout_handler - called if a request timed out
- * @data: pointer to adapter for handler function
- *
- * This function needs to be called if requests (ELS, Generic Service,
- * or SCSI commands) exceed a certain time limit. The assumption is
- * that after the time limit the adapter get stuck. So we trigger a reopen of
- * the adapter.
- */
-static void zfcp_fsf_request_timeout_handler(unsigned long data)
+static void zfcp_erp_action_ready(struct zfcp_erp_action *act)
{
- struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
- zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 62,
- NULL);
+ struct zfcp_adapter *adapter = act->adapter;
+
+ list_move(&act->list, &act->adapter->erp_ready_head);
+ zfcp_rec_dbf_event_action(146, act);
+ up(&adapter->erp_ready_sem);
+ zfcp_rec_dbf_event_thread(2, adapter);
}
-void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, unsigned long timeout)
+static void zfcp_erp_action_dismiss(struct zfcp_erp_action *act)
{
- fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
- fsf_req->timer.data = (unsigned long) fsf_req->adapter;
- fsf_req->timer.expires = jiffies + timeout;
- add_timer(&fsf_req->timer);
+ act->status |= ZFCP_STATUS_ERP_DISMISSED;
+ if (zfcp_erp_action_exists(act) == ZFCP_ERP_ACTION_RUNNING)
+ zfcp_erp_action_ready(act);
}
-/*
- * function:
- *
- * purpose: called if an adapter failed,
- * initiates adapter recovery which is done
- * asynchronously
- *
- * returns: 0 - initiated action successfully
- * <0 - failed to initiate action
- */
-static int zfcp_erp_adapter_reopen_internal(struct zfcp_adapter *adapter,
- int clear_mask, u8 id, void *ref)
+static void zfcp_erp_action_dismiss_unit(struct zfcp_unit *unit)
{
- int retval;
+ if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_ERP_INUSE)
+ zfcp_erp_action_dismiss(&unit->erp_action);
+}
- ZFCP_LOG_DEBUG("reopen adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
+static void zfcp_erp_action_dismiss_port(struct zfcp_port *port)
+{
+ struct zfcp_unit *unit;
- zfcp_erp_adapter_block(adapter, clear_mask);
+ if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_INUSE)
+ zfcp_erp_action_dismiss(&port->erp_action);
+ else
+ list_for_each_entry(unit, &port->unit_list_head, list)
+ zfcp_erp_action_dismiss_unit(unit);
+}
- if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &adapter->status)) {
- ZFCP_LOG_DEBUG("skipped reopen of failed adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- /* ensure propagation of failed status to new devices */
- zfcp_erp_adapter_failed(adapter, 13, NULL);
- retval = -EIO;
- goto out;
- }
- retval = zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_ADAPTER,
- adapter, NULL, NULL, id, ref);
+static void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *adapter)
+{
+ struct zfcp_port *port;
- out:
- return retval;
+ if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_INUSE)
+ zfcp_erp_action_dismiss(&adapter->erp_action);
+ else
+ list_for_each_entry(port, &adapter->port_list_head, list)
+ zfcp_erp_action_dismiss_port(port);
}
-/*
- * function:
- *
- * purpose: Wrappper for zfcp_erp_adapter_reopen_internal
- * used to ensure the correct locking
- *
- * returns: 0 - initiated action successfully
- * <0 - failed to initiate action
- */
-int zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear_mask,
- u8 id, void *ref)
+static int zfcp_erp_required_act(int want, struct zfcp_adapter *adapter,
+ struct zfcp_port *port,
+ struct zfcp_unit *unit)
{
- int retval;
- unsigned long flags;
+ int need = want;
+ int u_status, p_status, a_status;
- read_lock_irqsave(&zfcp_data.config_lock, flags);
- write_lock(&adapter->erp_lock);
- retval = zfcp_erp_adapter_reopen_internal(adapter, clear_mask, id, ref);
- write_unlock(&adapter->erp_lock);
- read_unlock_irqrestore(&zfcp_data.config_lock, flags);
+ switch (want) {
+ case ZFCP_ERP_ACTION_REOPEN_UNIT:
+ u_status = atomic_read(&unit->status);
+ if (u_status & ZFCP_STATUS_COMMON_ERP_INUSE)
+ return 0;
+ p_status = atomic_read(&port->status);
+ if (!(p_status & ZFCP_STATUS_COMMON_RUNNING) ||
+ p_status & ZFCP_STATUS_COMMON_ERP_FAILED)
+ return 0;
+ if (!(p_status & ZFCP_STATUS_COMMON_UNBLOCKED))
+ need = ZFCP_ERP_ACTION_REOPEN_PORT;
+ /* fall through */
+ case ZFCP_ERP_ACTION_REOPEN_PORT:
+ case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
+ p_status = atomic_read(&port->status);
+ if (p_status & ZFCP_STATUS_COMMON_ERP_INUSE)
+ return 0;
+ a_status = atomic_read(&adapter->status);
+ if (!(a_status & ZFCP_STATUS_COMMON_RUNNING) ||
+ a_status & ZFCP_STATUS_COMMON_ERP_FAILED)
+ return 0;
+ if (!(a_status & ZFCP_STATUS_COMMON_UNBLOCKED))
+ need = ZFCP_ERP_ACTION_REOPEN_ADAPTER;
+ /* fall through */
+ case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
+ a_status = atomic_read(&adapter->status);
+ if (a_status & ZFCP_STATUS_COMMON_ERP_INUSE)
+ return 0;
+ }
- return retval;
+ return need;
}
-int zfcp_erp_adapter_shutdown(struct zfcp_adapter *adapter, int clear_mask,
- u8 id, void *ref)
+static struct zfcp_erp_action *zfcp_erp_setup_act(int need,
+ struct zfcp_adapter *adapter,
+ struct zfcp_port *port,
+ struct zfcp_unit *unit)
{
- int retval;
+ struct zfcp_erp_action *erp_action;
+ u32 status = 0;
- retval = zfcp_erp_adapter_reopen(adapter,
- ZFCP_STATUS_COMMON_RUNNING |
- ZFCP_STATUS_COMMON_ERP_FAILED |
- clear_mask, id, ref);
+ switch (need) {
+ case ZFCP_ERP_ACTION_REOPEN_UNIT:
+ zfcp_unit_get(unit);
+ atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &unit->status);
+ erp_action = &unit->erp_action;
+ if (!(atomic_read(&unit->status) & ZFCP_STATUS_COMMON_RUNNING))
+ status = ZFCP_STATUS_ERP_CLOSE_ONLY;
+ break;
- return retval;
-}
+ case ZFCP_ERP_ACTION_REOPEN_PORT:
+ case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
+ zfcp_port_get(port);
+ zfcp_erp_action_dismiss_port(port);
+ atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &port->status);
+ erp_action = &port->erp_action;
+ if (!(atomic_read(&port->status) & ZFCP_STATUS_COMMON_RUNNING))
+ status = ZFCP_STATUS_ERP_CLOSE_ONLY;
+ break;
-int zfcp_erp_port_shutdown(struct zfcp_port *port, int clear_mask, u8 id,
- void *ref)
-{
- int retval;
+ case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
+ zfcp_adapter_get(adapter);
+ zfcp_erp_action_dismiss_adapter(adapter);
+ atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status);
+ erp_action = &adapter->erp_action;
+ if (!(atomic_read(&adapter->status) &
+ ZFCP_STATUS_COMMON_RUNNING))
+ status = ZFCP_STATUS_ERP_CLOSE_ONLY;
+ break;
- retval = zfcp_erp_port_reopen(port,
- ZFCP_STATUS_COMMON_RUNNING |
- ZFCP_STATUS_COMMON_ERP_FAILED |
- clear_mask, id, ref);
+ default:
+ return NULL;
+ }
- return retval;
+ memset(erp_action, 0, sizeof(struct zfcp_erp_action));
+ erp_action->adapter = adapter;
+ erp_action->port = port;
+ erp_action->unit = unit;
+ erp_action->action = need;
+ erp_action->status = status;
+
+ return erp_action;
}
-int zfcp_erp_unit_shutdown(struct zfcp_unit *unit, int clear_mask, u8 id,
- void *ref)
+static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter,
+ struct zfcp_port *port,
+ struct zfcp_unit *unit, u8 id, void *ref)
{
- int retval;
+ int retval = 1, need;
+ struct zfcp_erp_action *act = NULL;
+
+ if (!(atomic_read(&adapter->status) &
+ ZFCP_STATUS_ADAPTER_ERP_THREAD_UP))
+ return -EIO;
- retval = zfcp_erp_unit_reopen(unit,
- ZFCP_STATUS_COMMON_RUNNING |
- ZFCP_STATUS_COMMON_ERP_FAILED |
- clear_mask, id, ref);
+ need = zfcp_erp_required_act(want, adapter, port, unit);
+ if (!need)
+ goto out;
+ atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_PENDING, &adapter->status);
+ act = zfcp_erp_setup_act(need, adapter, port, unit);
+ if (!act)
+ goto out;
+ ++adapter->erp_total_count;
+ list_add_tail(&act->list, &adapter->erp_ready_head);
+ up(&adapter->erp_ready_sem);
+ zfcp_rec_dbf_event_thread(1, adapter);
+ retval = 0;
+ out:
+ zfcp_rec_dbf_event_trigger(id, ref, want, need, act,
+ adapter, port, unit);
return retval;
}
-
-/**
- * zfcp_erp_adisc - send ADISC ELS command
- * @port: port structure
- */
-static int
-zfcp_erp_adisc(struct zfcp_port *port)
+static int _zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter,
+ int clear_mask, u8 id, void *ref)
{
- struct zfcp_adapter *adapter = port->adapter;
- struct zfcp_send_els *send_els;
- struct zfcp_ls_adisc *adisc;
- void *address = NULL;
- int retval = 0;
-
- send_els = kzalloc(sizeof(struct zfcp_send_els), GFP_ATOMIC);
- if (send_els == NULL)
- goto nomem;
-
- send_els->req = kmalloc(sizeof(struct scatterlist), GFP_ATOMIC);
- if (send_els->req == NULL)
- goto nomem;
- sg_init_table(send_els->req, 1);
-
- send_els->resp = kmalloc(sizeof(struct scatterlist), GFP_ATOMIC);
- if (send_els->resp == NULL)
- goto nomem;
- sg_init_table(send_els->resp, 1);
-
- address = (void *) get_zeroed_page(GFP_ATOMIC);
- if (address == NULL)
- goto nomem;
-
- zfcp_address_to_sg(address, send_els->req, sizeof(struct zfcp_ls_adisc));
- address += PAGE_SIZE >> 1;
- zfcp_address_to_sg(address, send_els->resp, sizeof(struct zfcp_ls_adisc_acc));
- send_els->req_count = send_els->resp_count = 1;
-
- send_els->adapter = adapter;
- send_els->port = port;
- send_els->d_id = port->d_id;
- send_els->handler = zfcp_erp_adisc_handler;
- send_els->handler_data = (unsigned long) send_els;
-
- adisc = zfcp_sg_to_address(send_els->req);
- send_els->ls_code = adisc->code = ZFCP_LS_ADISC;
-
- /* acc. to FC-FS, hard_nport_id in ADISC should not be set for ports
- without FC-AL-2 capability, so we don't set it */
- adisc->wwpn = fc_host_port_name(adapter->scsi_host);
- adisc->wwnn = fc_host_node_name(adapter->scsi_host);
- adisc->nport_id = fc_host_port_id(adapter->scsi_host);
- ZFCP_LOG_INFO("ADISC request from s_id 0x%06x to d_id 0x%06x "
- "(wwpn=0x%016Lx, wwnn=0x%016Lx, "
- "hard_nport_id=0x%06x, nport_id=0x%06x)\n",
- adisc->nport_id, send_els->d_id, (wwn_t) adisc->wwpn,
- (wwn_t) adisc->wwnn, adisc->hard_nport_id,
- adisc->nport_id);
-
- retval = zfcp_fsf_send_els(send_els);
- if (retval != 0) {
- ZFCP_LOG_NORMAL("error: initiation of Send ELS failed for port "
- "0x%06x on adapter %s\n", send_els->d_id,
- zfcp_get_busid_by_adapter(adapter));
- goto freemem;
- }
+ zfcp_erp_adapter_block(adapter, clear_mask);
- goto out;
-
- nomem:
- retval = -ENOMEM;
- freemem:
- if (address != NULL)
- __free_pages(sg_page(send_els->req), 0);
- if (send_els != NULL) {
- kfree(send_els->req);
- kfree(send_els->resp);
- kfree(send_els);
+ /* ensure propagation of failed status to new devices */
+ if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
+ zfcp_erp_adapter_failed(adapter, 13, NULL);
+ return -EIO;
}
- out:
- return retval;
+ return zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_ADAPTER,
+ adapter, NULL, NULL, id, ref);
}
-
/**
- * zfcp_erp_adisc_handler - handler for ADISC ELS command
- * @data: pointer to struct zfcp_send_els
- *
- * If ADISC failed (LS_RJT or timed out) forced reopen of the port is triggered.
+ * zfcp_erp_adapter_reopen - Reopen adapter.
+ * @adapter: Adapter to reopen.
+ * @clear: Status flags to clear.
+ * @id: Id for debug trace event.
+ * @ref: Reference for debug trace event.
*/
-static void
-zfcp_erp_adisc_handler(unsigned long data)
+void zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear,
+ u8 id, void *ref)
{
- struct zfcp_send_els *send_els;
- struct zfcp_port *port;
- struct zfcp_adapter *adapter;
- u32 d_id;
- struct zfcp_ls_adisc_acc *adisc;
-
- send_els = (struct zfcp_send_els *) data;
- adapter = send_els->adapter;
- port = send_els->port;
- d_id = send_els->d_id;
-
- /* request rejected or timed out */
- if (send_els->status != 0) {
- ZFCP_LOG_NORMAL("ELS request rejected/timed out, "
- "force physical port reopen "
- "(adapter %s, port d_id=0x%06x)\n",
- zfcp_get_busid_by_adapter(adapter), d_id);
- if (zfcp_erp_port_forced_reopen(port, 0, 63, NULL))
- ZFCP_LOG_NORMAL("failed reopen of port "
- "(adapter %s, wwpn=0x%016Lx)\n",
- zfcp_get_busid_by_port(port),
- port->wwpn);
- goto out;
- }
-
- adisc = zfcp_sg_to_address(send_els->resp);
-
- ZFCP_LOG_INFO("ADISC response from d_id 0x%06x to s_id "
- "0x%06x (wwpn=0x%016Lx, wwnn=0x%016Lx, "
- "hard_nport_id=0x%06x, nport_id=0x%06x)\n",
- d_id, fc_host_port_id(adapter->scsi_host),
- (wwn_t) adisc->wwpn, (wwn_t) adisc->wwnn,
- adisc->hard_nport_id, adisc->nport_id);
-
- /* set wwnn for port */
- if (port->wwnn == 0)
- port->wwnn = adisc->wwnn;
-
- if (port->wwpn != adisc->wwpn) {
- ZFCP_LOG_NORMAL("d_id assignment changed, reopening "
- "port (adapter %s, wwpn=0x%016Lx, "
- "adisc_resp_wwpn=0x%016Lx)\n",
- zfcp_get_busid_by_port(port),
- port->wwpn, (wwn_t) adisc->wwpn);
- if (zfcp_erp_port_reopen(port, 0, 64, NULL))
- ZFCP_LOG_NORMAL("failed reopen of port "
- "(adapter %s, wwpn=0x%016Lx)\n",
- zfcp_get_busid_by_port(port),
- port->wwpn);
- }
+ unsigned long flags;
- out:
- zfcp_port_put(port);
- __free_pages(sg_page(send_els->req), 0);
- kfree(send_els->req);
- kfree(send_els->resp);
- kfree(send_els);
+ read_lock_irqsave(&zfcp_data.config_lock, flags);
+ write_lock(&adapter->erp_lock);
+ _zfcp_erp_adapter_reopen(adapter, clear, id, ref);
+ write_unlock(&adapter->erp_lock);
+ read_unlock_irqrestore(&zfcp_data.config_lock, flags);
}
-
/**
- * zfcp_test_link - lightweight link test procedure
- * @port: port to be tested
- *
- * Test status of a link to a remote port using the ELS command ADISC.
+ * zfcp_erp_adapter_shutdown - Shutdown adapter.
+ * @adapter: Adapter to shut down.
+ * @clear: Status flags to clear.
+ * @id: Id for debug trace event.
+ * @ref: Reference for debug trace event.
*/
-int
-zfcp_test_link(struct zfcp_port *port)
+void zfcp_erp_adapter_shutdown(struct zfcp_adapter *adapter, int clear,
+ u8 id, void *ref)
{
- int retval;
-
- zfcp_port_get(port);
- retval = zfcp_erp_adisc(port);
- if (retval != 0 && retval != -EBUSY) {
- zfcp_port_put(port);
- ZFCP_LOG_NORMAL("reopen needed for port 0x%016Lx "
- "on adapter %s\n ", port->wwpn,
- zfcp_get_busid_by_port(port));
- retval = zfcp_erp_port_forced_reopen(port, 0, 65, NULL);
- if (retval != 0) {
- ZFCP_LOG_NORMAL("reopen of remote port 0x%016Lx "
- "on adapter %s failed\n", port->wwpn,
- zfcp_get_busid_by_port(port));
- retval = -EPERM;
- }
- }
-
- return retval;
+ int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
+ zfcp_erp_adapter_reopen(adapter, clear | flags, id, ref);
}
-
-/*
- * function:
- *
- * purpose: called if a port failed to be opened normally
- * initiates Forced Reopen recovery which is done
- * asynchronously
- *
- * returns: 0 - initiated action successfully
- * <0 - failed to initiate action
+/**
+ * zfcp_erp_port_shutdown - Shutdown port
+ * @port: Port to shut down.
+ * @clear: Status flags to clear.
+ * @id: Id for debug trace event.
+ * @ref: Reference for debug trace event.
*/
-static int zfcp_erp_port_forced_reopen_internal(struct zfcp_port *port,
- int clear_mask, u8 id,
- void *ref)
+void zfcp_erp_port_shutdown(struct zfcp_port *port, int clear, u8 id, void *ref)
{
- int retval;
+ int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
+ zfcp_erp_port_reopen(port, clear | flags, id, ref);
+}
- ZFCP_LOG_DEBUG("forced reopen of port 0x%016Lx on adapter %s\n",
- port->wwpn, zfcp_get_busid_by_port(port));
+/**
+ * zfcp_erp_unit_shutdown - Shutdown unit
+ * @unit: Unit to shut down.
+ * @clear: Status flags to clear.
+ * @id: Id for debug trace event.
+ * @ref: Reference for debug trace event.
+ */
+void zfcp_erp_unit_shutdown(struct zfcp_unit *unit, int clear, u8 id, void *ref)
+{
+ int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
+ zfcp_erp_unit_reopen(unit, clear | flags, id, ref);
+}
- zfcp_erp_port_block(port, clear_mask);
+static void zfcp_erp_port_block(struct zfcp_port *port, int clear)
+{
+ zfcp_erp_modify_port_status(port, 17, NULL,
+ ZFCP_STATUS_COMMON_UNBLOCKED | clear,
+ ZFCP_CLEAR);
+}
- if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &port->status)) {
- ZFCP_LOG_DEBUG("skipped forced reopen of failed port 0x%016Lx "
- "on adapter %s\n", port->wwpn,
- zfcp_get_busid_by_port(port));
- retval = -EIO;
- goto out;
- }
+static void _zfcp_erp_port_forced_reopen(struct zfcp_port *port,
+ int clear, u8 id, void *ref)
+{
+ zfcp_erp_port_block(port, clear);
- retval = zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_PORT_FORCED,
- port->adapter, port, NULL, id, ref);
+ if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
+ return;
- out:
- return retval;
+ zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_PORT_FORCED,
+ port->adapter, port, NULL, id, ref);
}
-/*
- * function:
- *
- * purpose: Wrappper for zfcp_erp_port_forced_reopen_internal
- * used to ensure the correct locking
- *
- * returns: 0 - initiated action successfully
- * <0 - failed to initiate action
+/**
+ * zfcp_erp_port_forced_reopen - Forced close of port and open again
+ * @port: Port to force close and to reopen.
+ * @id: Id for debug trace event.
+ * @ref: Reference for debug trace event.
*/
-int zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear_mask, u8 id,
- void *ref)
+void zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear, u8 id,
+ void *ref)
{
- int retval;
unsigned long flags;
- struct zfcp_adapter *adapter;
+ struct zfcp_adapter *adapter = port->adapter;
- adapter = port->adapter;
read_lock_irqsave(&zfcp_data.config_lock, flags);
write_lock(&adapter->erp_lock);
- retval = zfcp_erp_port_forced_reopen_internal(port, clear_mask, id,
- ref);
+ _zfcp_erp_port_forced_reopen(port, clear, id, ref);
write_unlock(&adapter->erp_lock);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
-
- return retval;
}
-/*
- * function:
- *
- * purpose: called if a port is to be opened
- * initiates Reopen recovery which is done
- * asynchronously
- *
- * returns: 0 - initiated action successfully
- * <0 - failed to initiate action
- */
-static int zfcp_erp_port_reopen_internal(struct zfcp_port *port, int clear_mask,
- u8 id, void *ref)
+static int _zfcp_erp_port_reopen(struct zfcp_port *port, int clear, u8 id,
+ void *ref)
{
- int retval;
-
- ZFCP_LOG_DEBUG("reopen of port 0x%016Lx on adapter %s\n",
- port->wwpn, zfcp_get_busid_by_port(port));
+ zfcp_erp_port_block(port, clear);
- zfcp_erp_port_block(port, clear_mask);
-
- if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &port->status)) {
- ZFCP_LOG_DEBUG("skipped reopen of failed port 0x%016Lx "
- "on adapter %s\n", port->wwpn,
- zfcp_get_busid_by_port(port));
+ if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
/* ensure propagation of failed status to new devices */
zfcp_erp_port_failed(port, 14, NULL);
- retval = -EIO;
- goto out;
+ return -EIO;
}
- retval = zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_PORT,
- port->adapter, port, NULL, id, ref);
-
- out:
- return retval;
+ return zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_PORT,
+ port->adapter, port, NULL, id, ref);
}
/**
- * zfcp_erp_port_reopen - initiate reopen of a remote port
- * @port: port to be reopened
- * @clear_mask: specifies flags in port status to be cleared
- * Return: 0 on success, < 0 on error
+ * zfcp_erp_port_reopen - trigger remote port recovery
+ * @port: port to recover
+ * @clear_mask: flags in port status to be cleared
*
- * This is a wrappper function for zfcp_erp_port_reopen_internal. It ensures
- * correct locking. An error recovery task is initiated to do the reopen.
- * To wait for the completion of the reopen zfcp_erp_wait should be used.
+ * Returns 0 if recovery has been triggered, < 0 if not.
*/
-int zfcp_erp_port_reopen(struct zfcp_port *port, int clear_mask, u8 id,
- void *ref)
+int zfcp_erp_port_reopen(struct zfcp_port *port, int clear, u8 id, void *ref)
{
- int retval;
unsigned long flags;
+ int retval;
struct zfcp_adapter *adapter = port->adapter;
read_lock_irqsave(&zfcp_data.config_lock, flags);
write_lock(&adapter->erp_lock);
- retval = zfcp_erp_port_reopen_internal(port, clear_mask, id, ref);
+ retval = _zfcp_erp_port_reopen(port, clear, id, ref);
write_unlock(&adapter->erp_lock);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
return retval;
}
-/*
- * function:
- *
- * purpose: called if a unit is to be opened
- * initiates Reopen recovery which is done
- * asynchronously
- *
- * returns: 0 - initiated action successfully
- * <0 - failed to initiate action
- */
-static int zfcp_erp_unit_reopen_internal(struct zfcp_unit *unit, int clear_mask,
- u8 id, void *ref)
+static void zfcp_erp_unit_block(struct zfcp_unit *unit, int clear_mask)
{
- int retval;
- struct zfcp_adapter *adapter = unit->port->adapter;
+ zfcp_erp_modify_unit_status(unit, 19, NULL,
+ ZFCP_STATUS_COMMON_UNBLOCKED | clear_mask,
+ ZFCP_CLEAR);
+}
- ZFCP_LOG_DEBUG("reopen of unit 0x%016Lx on port 0x%016Lx "
- "on adapter %s\n", unit->fcp_lun,
- unit->port->wwpn, zfcp_get_busid_by_unit(unit));
+static void _zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear, u8 id,
+ void *ref)
+{
+ struct zfcp_adapter *adapter = unit->port->adapter;
- zfcp_erp_unit_block(unit, clear_mask);
+ zfcp_erp_unit_block(unit, clear);
- if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &unit->status)) {
- ZFCP_LOG_DEBUG("skipped reopen of failed unit 0x%016Lx "
- "on port 0x%016Lx on adapter %s\n",
- unit->fcp_lun, unit->port->wwpn,
- zfcp_get_busid_by_unit(unit));
- retval = -EIO;
- goto out;
- }
+ if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
+ return;
- retval = zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_UNIT,
- adapter, unit->port, unit, id, ref);
- out:
- return retval;
+ zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_UNIT,
+ adapter, unit->port, unit, id, ref);
}
/**
@@ -643,987 +408,182 @@ static int zfcp_erp_unit_reopen_internal(struct zfcp_unit *unit, int clear_mask,
* @unit: unit to be reopened
* @clear_mask: specifies flags in unit status to be cleared
* Return: 0 on success, < 0 on error
- *
- * This is a wrappper for zfcp_erp_unit_reopen_internal. It ensures correct
- * locking. An error recovery task is initiated to do the reopen.
- * To wait for the completion of the reopen zfcp_erp_wait should be used.
*/
-int zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear_mask, u8 id,
- void *ref)
+void zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear, u8 id, void *ref)
{
- int retval;
unsigned long flags;
- struct zfcp_adapter *adapter;
- struct zfcp_port *port;
-
- port = unit->port;
- adapter = port->adapter;
+ struct zfcp_port *port = unit->port;
+ struct zfcp_adapter *adapter = port->adapter;
read_lock_irqsave(&zfcp_data.config_lock, flags);
write_lock(&adapter->erp_lock);
- retval = zfcp_erp_unit_reopen_internal(unit, clear_mask, id, ref);
+ _zfcp_erp_unit_reopen(unit, clear, id, ref);
write_unlock(&adapter->erp_lock);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
-
- return retval;
}
-/**
- * zfcp_erp_adapter_block - mark adapter as blocked, block scsi requests
- */
-static void zfcp_erp_adapter_block(struct zfcp_adapter *adapter, int clear_mask)
-{
- zfcp_erp_modify_adapter_status(adapter, 15, NULL,
- ZFCP_STATUS_COMMON_UNBLOCKED |
- clear_mask, ZFCP_CLEAR);
-}
-
-/* FIXME: isn't really atomic */
-/*
- * returns the mask which has not been set so far, i.e.
- * 0 if no bit has been changed, !0 if some bit has been changed
- */
-static int atomic_test_and_set_mask(unsigned long mask, atomic_t *v)
+static int status_change_set(unsigned long mask, atomic_t *status)
{
- int changed_bits = (atomic_read(v) /*XOR*/^ mask) & mask;
- atomic_set_mask(mask, v);
- return changed_bits;
+ return (atomic_read(status) ^ mask) & mask;
}
-/* FIXME: isn't really atomic */
-/*
- * returns the mask which has not been cleared so far, i.e.
- * 0 if no bit has been changed, !0 if some bit has been changed
- */
-static int atomic_test_and_clear_mask(unsigned long mask, atomic_t *v)
+static int status_change_clear(unsigned long mask, atomic_t *status)
{
- int changed_bits = atomic_read(v) & mask;
- atomic_clear_mask(mask, v);
- return changed_bits;
+ return atomic_read(status) & mask;
}
-/**
- * zfcp_erp_adapter_unblock - mark adapter as unblocked, allow scsi requests
- */
static void zfcp_erp_adapter_unblock(struct zfcp_adapter *adapter)
{
- if (atomic_test_and_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
- &adapter->status))
+ if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status))
zfcp_rec_dbf_event_adapter(16, NULL, adapter);
+ atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status);
}
-/*
- * function:
- *
- * purpose: disable I/O,
- * return any open requests and clean them up,
- * aim: no pending and incoming I/O
- *
- * returns:
- */
-static void
-zfcp_erp_port_block(struct zfcp_port *port, int clear_mask)
-{
- zfcp_erp_modify_port_status(port, 17, NULL,
- ZFCP_STATUS_COMMON_UNBLOCKED | clear_mask,
- ZFCP_CLEAR);
-}
-
-/*
- * function:
- *
- * purpose: enable I/O
- *
- * returns:
- */
-static void
-zfcp_erp_port_unblock(struct zfcp_port *port)
+static void zfcp_erp_port_unblock(struct zfcp_port *port)
{
- if (atomic_test_and_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
- &port->status))
+ if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &port->status))
zfcp_rec_dbf_event_port(18, NULL, port);
+ atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &port->status);
}
-/*
- * function:
- *
- * purpose: disable I/O,
- * return any open requests and clean them up,
- * aim: no pending and incoming I/O
- *
- * returns:
- */
-static void
-zfcp_erp_unit_block(struct zfcp_unit *unit, int clear_mask)
-{
- zfcp_erp_modify_unit_status(unit, 19, NULL,
- ZFCP_STATUS_COMMON_UNBLOCKED | clear_mask,
- ZFCP_CLEAR);
-}
-
-/*
- * function:
- *
- * purpose: enable I/O
- *
- * returns:
- */
-static void
-zfcp_erp_unit_unblock(struct zfcp_unit *unit)
+static void zfcp_erp_unit_unblock(struct zfcp_unit *unit)
{
- if (atomic_test_and_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
- &unit->status))
+ if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &unit->status))
zfcp_rec_dbf_event_unit(20, NULL, unit);
+ atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &unit->status);
}
-static void
-zfcp_erp_action_ready(struct zfcp_erp_action *erp_action)
+static void zfcp_erp_action_to_running(struct zfcp_erp_action *erp_action)
{
- struct zfcp_adapter *adapter = erp_action->adapter;
-
- zfcp_erp_action_to_ready(erp_action);
- up(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread(2, adapter, 0);
+ list_move(&erp_action->list, &erp_action->adapter->erp_running_head);
+ zfcp_rec_dbf_event_action(145, erp_action);
}
-/*
- * function:
- *
- * purpose:
- *
- * returns: <0 erp_action not found in any list
- * ZFCP_ERP_ACTION_READY erp_action is in ready list
- * ZFCP_ERP_ACTION_RUNNING erp_action is in running list
- *
- * locks: erp_lock must be held
- */
-static int
-zfcp_erp_action_exists(struct zfcp_erp_action *erp_action)
+static void zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *act)
{
- int retval = -EINVAL;
- struct list_head *entry;
- struct zfcp_erp_action *entry_erp_action;
- struct zfcp_adapter *adapter = erp_action->adapter;
-
- /* search in running list */
- list_for_each(entry, &adapter->erp_running_head) {
- entry_erp_action =
- list_entry(entry, struct zfcp_erp_action, list);
- if (entry_erp_action == erp_action) {
- retval = ZFCP_ERP_ACTION_RUNNING;
- goto out;
- }
- }
- /* search in ready list */
- list_for_each(entry, &adapter->erp_ready_head) {
- entry_erp_action =
- list_entry(entry, struct zfcp_erp_action, list);
- if (entry_erp_action == erp_action) {
- retval = ZFCP_ERP_ACTION_READY;
- goto out;
- }
- }
+ struct zfcp_adapter *adapter = act->adapter;
- out:
- return retval;
-}
-
-/*
- * purpose: checks current status of action (timed out, dismissed, ...)
- * and does appropriate preparations (dismiss fsf request, ...)
- *
- * locks: called under erp_lock (disabled interrupts)
- */
-static void
-zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *erp_action)
-{
- struct zfcp_adapter *adapter = erp_action->adapter;
+ if (!act->fsf_req)
+ return;
- if (erp_action->fsf_req) {
- /* take lock to ensure that request is not deleted meanwhile */
- spin_lock(&adapter->req_list_lock);
- if (zfcp_reqlist_find_safe(adapter, erp_action->fsf_req) &&
- erp_action->fsf_req->erp_action == erp_action) {
- /* fsf_req still exists */
- /* dismiss fsf_req of timed out/dismissed erp_action */
- if (erp_action->status & (ZFCP_STATUS_ERP_DISMISSED |
- ZFCP_STATUS_ERP_TIMEDOUT)) {
- erp_action->fsf_req->status |=
- ZFCP_STATUS_FSFREQ_DISMISSED;
- zfcp_rec_dbf_event_action(142, erp_action);
- }
- if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT) {
- zfcp_rec_dbf_event_action(143, erp_action);
- ZFCP_LOG_NORMAL("error: erp step timed out "
- "(action=%d, fsf_req=%p)\n ",
- erp_action->action,
- erp_action->fsf_req);
- }
- /*
- * If fsf_req is neither dismissed nor completed
- * then keep it running asynchronously and don't mess
- * with the association of erp_action and fsf_req.
- */
- if (erp_action->fsf_req->status &
- (ZFCP_STATUS_FSFREQ_COMPLETED |
- ZFCP_STATUS_FSFREQ_DISMISSED)) {
- /* forget about association between fsf_req
- and erp_action */
- erp_action->fsf_req = NULL;
- }
- } else {
- /*
- * even if this fsf_req has gone, forget about
- * association between erp_action and fsf_req
- */
- erp_action->fsf_req = NULL;
+ spin_lock(&adapter->req_list_lock);
+ if (zfcp_reqlist_find_safe(adapter, act->fsf_req) &&
+ act->fsf_req->erp_action == act) {
+ if (act->status & (ZFCP_STATUS_ERP_DISMISSED |
+ ZFCP_STATUS_ERP_TIMEDOUT)) {
+ act->fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
+ zfcp_rec_dbf_event_action(142, act);
}
- spin_unlock(&adapter->req_list_lock);
- }
+ if (act->status & ZFCP_STATUS_ERP_TIMEDOUT)
+ zfcp_rec_dbf_event_action(143, act);
+ if (act->fsf_req->status & (ZFCP_STATUS_FSFREQ_COMPLETED |
+ ZFCP_STATUS_FSFREQ_DISMISSED))
+ act->fsf_req = NULL;
+ } else
+ act->fsf_req = NULL;
+ spin_unlock(&adapter->req_list_lock);
}
/**
- * zfcp_erp_async_handler_nolock - complete erp_action
- *
- * Used for normal completion, time-out, dismissal and failure after
- * low memory condition.
+ * zfcp_erp_notify - Trigger ERP action.
+ * @erp_action: ERP action to continue.
+ * @set_mask: ERP action status flags to set.
*/
-static void zfcp_erp_async_handler_nolock(struct zfcp_erp_action *erp_action,
- unsigned long set_mask)
-{
- if (zfcp_erp_action_exists(erp_action) == ZFCP_ERP_ACTION_RUNNING) {
- erp_action->status |= set_mask;
- zfcp_erp_action_ready(erp_action);
- } else {
- /* action is ready or gone - nothing to do */
- }
-}
-
-/**
- * zfcp_erp_async_handler - wrapper for erp_async_handler_nolock w/ locking
- */
-void zfcp_erp_async_handler(struct zfcp_erp_action *erp_action,
- unsigned long set_mask)
+void zfcp_erp_notify(struct zfcp_erp_action *erp_action, unsigned long set_mask)
{
struct zfcp_adapter *adapter = erp_action->adapter;
unsigned long flags;
write_lock_irqsave(&adapter->erp_lock, flags);
- zfcp_erp_async_handler_nolock(erp_action, set_mask);
- write_unlock_irqrestore(&adapter->erp_lock, flags);
-}
-
-/*
- * purpose: is called for erp_action which was slept waiting for
- * memory becoming avaliable,
- * will trigger that this action will be continued
- */
-static void
-zfcp_erp_memwait_handler(unsigned long data)
-{
- struct zfcp_erp_action *erp_action = (struct zfcp_erp_action *) data;
-
- zfcp_erp_async_handler(erp_action, 0);
-}
-
-/*
- * purpose: is called if an asynchronous erp step timed out,
- * action gets an appropriate flag and will be processed
- * accordingly
- */
-static void zfcp_erp_timeout_handler(unsigned long data)
-{
- struct zfcp_erp_action *erp_action = (struct zfcp_erp_action *) data;
-
- zfcp_erp_async_handler(erp_action, ZFCP_STATUS_ERP_TIMEDOUT);
-}
-
-/**
- * zfcp_erp_action_dismiss - dismiss an erp_action
- *
- * adapter->erp_lock must be held
- *
- * Dismissal of an erp_action is usually required if an erp_action of
- * higher priority is generated.
- */
-static void zfcp_erp_action_dismiss(struct zfcp_erp_action *erp_action)
-{
- erp_action->status |= ZFCP_STATUS_ERP_DISMISSED;
- if (zfcp_erp_action_exists(erp_action) == ZFCP_ERP_ACTION_RUNNING)
+ if (zfcp_erp_action_exists(erp_action) == ZFCP_ERP_ACTION_RUNNING) {
+ erp_action->status |= set_mask;
zfcp_erp_action_ready(erp_action);
-}
-
-int
-zfcp_erp_thread_setup(struct zfcp_adapter *adapter)
-{
- int retval = 0;
-
- atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);
-
- retval = kernel_thread(zfcp_erp_thread, adapter, SIGCHLD);
- if (retval < 0) {
- ZFCP_LOG_NORMAL("error: creation of erp thread failed for "
- "adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- } else {
- wait_event(adapter->erp_thread_wqh,
- atomic_test_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP,
- &adapter->status));
}
-
- return (retval < 0);
-}
-
-/*
- * function:
- *
- * purpose:
- *
- * returns:
- *
- * context: process (i.e. proc-fs or rmmod/insmod)
- *
- * note: The caller of this routine ensures that the specified
- * adapter has been shut down and that this operation
- * has been completed. Thus, there are no pending erp_actions
- * which would need to be handled here.
- */
-int
-zfcp_erp_thread_kill(struct zfcp_adapter *adapter)
-{
- int retval = 0;
-
- atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL, &adapter->status);
- up(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread(2, adapter, 1);
-
- wait_event(adapter->erp_thread_wqh,
- !atomic_test_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP,
- &adapter->status));
-
- atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL,
- &adapter->status);
-
- return retval;
-}
-
-/*
- * purpose: is run as a kernel thread,
- * goes through list of error recovery actions of associated adapter
- * and delegates single action to execution
- *
- * returns: 0
- */
-static int
-zfcp_erp_thread(void *data)
-{
- struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
- struct list_head *next;
- struct zfcp_erp_action *erp_action;
- unsigned long flags;
-
- daemonize("zfcperp%s", zfcp_get_busid_by_adapter(adapter));
- /* Block all signals */
- siginitsetinv(&current->blocked, 0);
- atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);
- wake_up(&adapter->erp_thread_wqh);
-
- while (!atomic_test_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL,
- &adapter->status)) {
-
- write_lock_irqsave(&adapter->erp_lock, flags);
- next = adapter->erp_ready_head.next;
- write_unlock_irqrestore(&adapter->erp_lock, flags);
-
- if (next != &adapter->erp_ready_head) {
- erp_action =
- list_entry(next, struct zfcp_erp_action, list);
- /*
- * process action (incl. [re]moving it
- * from 'ready' queue)
- */
- zfcp_erp_strategy(erp_action);
- }
-
- /*
- * sleep as long as there is nothing to do, i.e.
- * no action in 'ready' queue to be processed and
- * thread is not to be killed
- */
- zfcp_rec_dbf_event_thread(4, adapter, 1);
- down_interruptible(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread(5, adapter, 1);
- }
-
- atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);
- wake_up(&adapter->erp_thread_wqh);
-
- return 0;
-}
-
-/*
- * function:
- *
- * purpose: drives single error recovery action and schedules higher and
- * subordinate actions, if necessary
- *
- * returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
- * ZFCP_ERP_SUCCEEDED - action finished successfully (deqd)
- * ZFCP_ERP_FAILED - action finished unsuccessfully (deqd)
- * ZFCP_ERP_EXIT - action finished (dequeued), offline
- * ZFCP_ERP_DISMISSED - action canceled (dequeued)
- */
-static int
-zfcp_erp_strategy(struct zfcp_erp_action *erp_action)
-{
- int retval = 0;
- struct zfcp_adapter *adapter = erp_action->adapter;
- struct zfcp_port *port = erp_action->port;
- struct zfcp_unit *unit = erp_action->unit;
- int action = erp_action->action;
- u32 status = erp_action->status;
- unsigned long flags;
-
- /* serialise dismissing, timing out, moving, enqueueing */
- read_lock_irqsave(&zfcp_data.config_lock, flags);
- write_lock(&adapter->erp_lock);
-
- /* dequeue dismissed action and leave, if required */
- retval = zfcp_erp_strategy_check_action(erp_action, retval);
- if (retval == ZFCP_ERP_DISMISSED) {
- goto unlock;
- }
-
- /*
- * move action to 'running' queue before processing it
- * (to avoid a race condition regarding moving the
- * action to the 'running' queue and back)
- */
- zfcp_erp_action_to_running(erp_action);
-
- /*
- * try to process action as far as possible,
- * no lock to allow for blocking operations (kmalloc, qdio, ...),
- * afterwards the lock is required again for the following reasons:
- * - dequeueing of finished action and enqueueing of
- * follow-up actions must be atomic so that any other
- * reopen-routine does not believe there is nothing to do
- * and that it is safe to enqueue something else,
- * - we want to force any control thread which is dismissing
- * actions to finish this before we decide about
- * necessary steps to be taken here further
- */
- write_unlock(&adapter->erp_lock);
- read_unlock_irqrestore(&zfcp_data.config_lock, flags);
- retval = zfcp_erp_strategy_do_action(erp_action);
- read_lock_irqsave(&zfcp_data.config_lock, flags);
- write_lock(&adapter->erp_lock);
-
- /*
- * check for dismissed status again to avoid follow-up actions,
- * failing of targets and so on for dismissed actions,
- * we go through down() here because there has been an up()
- */
- if (erp_action->status & ZFCP_STATUS_ERP_DISMISSED)
- retval = ZFCP_ERP_CONTINUES;
-
- switch (retval) {
- case ZFCP_ERP_NOMEM:
- /* no memory to continue immediately, let it sleep */
- if (!(erp_action->status & ZFCP_STATUS_ERP_LOWMEM)) {
- ++adapter->erp_low_mem_count;
- erp_action->status |= ZFCP_STATUS_ERP_LOWMEM;
- }
- /* This condition is true if there is no memory available
- for any erp_action on this adapter. This implies that there
- are no elements in the memory pool(s) left for erp_actions.
- This might happen if an erp_action that used a memory pool
- element was timed out.
- */
- if (adapter->erp_total_count == adapter->erp_low_mem_count) {
- ZFCP_LOG_NORMAL("error: no mempool elements available, "
- "restarting I/O on adapter %s "
- "to free mempool\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_erp_adapter_reopen_internal(adapter, 0, 66, NULL);
- } else {
- retval = zfcp_erp_strategy_memwait(erp_action);
- }
- goto unlock;
- case ZFCP_ERP_CONTINUES:
- /* leave since this action runs asynchronously */
- if (erp_action->status & ZFCP_STATUS_ERP_LOWMEM) {
- --adapter->erp_low_mem_count;
- erp_action->status &= ~ZFCP_STATUS_ERP_LOWMEM;
- }
- goto unlock;
- }
- /* ok, finished action (whatever its result is) */
-
- /* check for unrecoverable targets */
- retval = zfcp_erp_strategy_check_target(erp_action, retval);
-
- /* action must be dequeued (here to allow for further ones) */
- zfcp_erp_action_dequeue(erp_action);
-
- /*
- * put this target through the erp mill again if someone has
- * requested to change the status of a target being online
- * to offline or the other way around
- * (old retval is preserved if nothing has to be done here)
- */
- retval = zfcp_erp_strategy_statechange(action, status, adapter,
- port, unit, retval);
-
- /*
- * leave if target is in permanent error state or if
- * action is repeated in order to process state change
- */
- if (retval == ZFCP_ERP_EXIT) {
- goto unlock;
- }
-
- /* trigger follow up actions */
- zfcp_erp_strategy_followup_actions(action, adapter, port, unit, retval);
-
- unlock:
- write_unlock(&adapter->erp_lock);
- read_unlock_irqrestore(&zfcp_data.config_lock, flags);
-
- if (retval != ZFCP_ERP_CONTINUES)
- zfcp_erp_action_cleanup(action, adapter, port, unit, retval);
-
- /*
- * a few tasks remain when the erp queues are empty
- * (don't do that if the last action evaluated was dismissed
- * since this clearly indicates that there is more to come) :
- * - close the name server port if it is open yet
- * (enqueues another [probably] final action)
- * - otherwise, wake up whoever wants to be woken when we are
- * done with erp
- */
- if (retval != ZFCP_ERP_DISMISSED)
- zfcp_erp_strategy_check_queues(adapter);
-
- return retval;
+ write_unlock_irqrestore(&adapter->erp_lock, flags);
}
-/*
- * function:
- *
- * purpose:
- *
- * returns: ZFCP_ERP_DISMISSED - if action has been dismissed
- * retval - otherwise
+/**
+ * zfcp_erp_timeout_handler - Trigger ERP action from timed out ERP request
+ * @data: ERP action (from timer data)
*/
-static int
-zfcp_erp_strategy_check_action(struct zfcp_erp_action *erp_action, int retval)
+void zfcp_erp_timeout_handler(unsigned long data)
{
- zfcp_erp_strategy_check_fsfreq(erp_action);
-
- if (erp_action->status & ZFCP_STATUS_ERP_DISMISSED) {
- zfcp_erp_action_dequeue(erp_action);
- retval = ZFCP_ERP_DISMISSED;
- }
-
- return retval;
+ struct zfcp_erp_action *act = (struct zfcp_erp_action *) data;
+ zfcp_erp_notify(act, ZFCP_STATUS_ERP_TIMEDOUT);
}
-static int
-zfcp_erp_strategy_do_action(struct zfcp_erp_action *erp_action)
+static void zfcp_erp_memwait_handler(unsigned long data)
{
- int retval = ZFCP_ERP_FAILED;
-
- /*
- * try to execute/continue action as far as possible,
- * note: no lock in subsequent strategy routines
- * (this allows these routine to call schedule, e.g.
- * kmalloc with such flags or qdio_initialize & friends)
- * Note: in case of timeout, the separate strategies will fail
- * anyhow. No need for a special action. Even worse, a nameserver
- * failure would not wake up waiting ports without the call.
- */
- switch (erp_action->action) {
-
- case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
- retval = zfcp_erp_adapter_strategy(erp_action);
- break;
-
- case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
- retval = zfcp_erp_port_forced_strategy(erp_action);
- break;
-
- case ZFCP_ERP_ACTION_REOPEN_PORT:
- retval = zfcp_erp_port_strategy(erp_action);
- break;
-
- case ZFCP_ERP_ACTION_REOPEN_UNIT:
- retval = zfcp_erp_unit_strategy(erp_action);
- break;
-
- default:
- ZFCP_LOG_NORMAL("bug: unknown erp action requested on "
- "adapter %s (action=%d)\n",
- zfcp_get_busid_by_adapter(erp_action->adapter),
- erp_action->action);
- }
-
- return retval;
+ zfcp_erp_notify((struct zfcp_erp_action *)data, 0);
}
-/*
- * function:
- *
- * purpose: triggers retry of this action after a certain amount of time
- * by means of timer provided by erp_action
- *
- * returns: ZFCP_ERP_CONTINUES - erp_action sleeps in erp running queue
- */
-static int
-zfcp_erp_strategy_memwait(struct zfcp_erp_action *erp_action)
+static void zfcp_erp_strategy_memwait(struct zfcp_erp_action *erp_action)
{
- int retval = ZFCP_ERP_CONTINUES;
-
init_timer(&erp_action->timer);
erp_action->timer.function = zfcp_erp_memwait_handler;
erp_action->timer.data = (unsigned long) erp_action;
- erp_action->timer.expires = jiffies + ZFCP_ERP_MEMWAIT_TIMEOUT;
+ erp_action->timer.expires = jiffies + HZ;
add_timer(&erp_action->timer);
-
- return retval;
}
-/*
- * function: zfcp_erp_adapter_failed
- *
- * purpose: sets the adapter and all underlying devices to ERP_FAILED
- *
- */
-void
-zfcp_erp_adapter_failed(struct zfcp_adapter *adapter, u8 id, void *ref)
-{
- zfcp_erp_modify_adapter_status(adapter, id, ref,
- ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
- ZFCP_LOG_NORMAL("adapter erp failed on adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
-}
-
-/*
- * function: zfcp_erp_port_failed
- *
- * purpose: sets the port and all underlying devices to ERP_FAILED
- *
- */
-void
-zfcp_erp_port_failed(struct zfcp_port *port, u8 id, void *ref)
-{
- zfcp_erp_modify_port_status(port, id, ref,
- ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
-
- if (atomic_test_mask(ZFCP_STATUS_PORT_WKA, &port->status))
- ZFCP_LOG_NORMAL("port erp failed (adapter %s, "
- "port d_id=0x%06x)\n",
- zfcp_get_busid_by_port(port), port->d_id);
- else
- ZFCP_LOG_NORMAL("port erp failed (adapter %s, wwpn=0x%016Lx)\n",
- zfcp_get_busid_by_port(port), port->wwpn);
-}
-
-/*
- * function: zfcp_erp_unit_failed
- *
- * purpose: sets the unit to ERP_FAILED
- *
- */
-void
-zfcp_erp_unit_failed(struct zfcp_unit *unit, u8 id, void *ref)
-{
- zfcp_erp_modify_unit_status(unit, id, ref,
- ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
-
- ZFCP_LOG_NORMAL("unit erp failed on unit 0x%016Lx on port 0x%016Lx "
- " on adapter %s\n", unit->fcp_lun,
- unit->port->wwpn, zfcp_get_busid_by_unit(unit));
-}
-
-/*
- * function: zfcp_erp_strategy_check_target
- *
- * purpose: increments the erp action count on the device currently in
- * recovery if the action failed or resets the count in case of
- * success. If a maximum count is exceeded the device is marked
- * as ERP_FAILED.
- * The 'blocked' state of a target which has been recovered
- * successfully is reset.
- *
- * returns: ZFCP_ERP_CONTINUES - action continues (not considered)
- * ZFCP_ERP_SUCCEEDED - action finished successfully
- * ZFCP_ERP_EXIT - action failed and will not continue
- */
-static int
-zfcp_erp_strategy_check_target(struct zfcp_erp_action *erp_action, int result)
-{
- struct zfcp_adapter *adapter = erp_action->adapter;
- struct zfcp_port *port = erp_action->port;
- struct zfcp_unit *unit = erp_action->unit;
-
- switch (erp_action->action) {
-
- case ZFCP_ERP_ACTION_REOPEN_UNIT:
- result = zfcp_erp_strategy_check_unit(unit, result);
- break;
-
- case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
- case ZFCP_ERP_ACTION_REOPEN_PORT:
- result = zfcp_erp_strategy_check_port(port, result);
- break;
-
- case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
- result = zfcp_erp_strategy_check_adapter(adapter, result);
- break;
- }
-
- return result;
-}
-
-static int
-zfcp_erp_strategy_statechange(int action,
- u32 status,
- struct zfcp_adapter *adapter,
- struct zfcp_port *port,
- struct zfcp_unit *unit, int retval)
-{
- switch (action) {
-
- case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
- if (zfcp_erp_strategy_statechange_detected(&adapter->status,
- status)) {
- zfcp_erp_adapter_reopen_internal(adapter,
- ZFCP_STATUS_COMMON_ERP_FAILED,
- 67, NULL);
- retval = ZFCP_ERP_EXIT;
- }
- break;
-
- case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
- case ZFCP_ERP_ACTION_REOPEN_PORT:
- if (zfcp_erp_strategy_statechange_detected(&port->status,
- status)) {
- zfcp_erp_port_reopen_internal(port,
- ZFCP_STATUS_COMMON_ERP_FAILED,
- 68, NULL);
- retval = ZFCP_ERP_EXIT;
- }
- break;
-
- case ZFCP_ERP_ACTION_REOPEN_UNIT:
- if (zfcp_erp_strategy_statechange_detected(&unit->status,
- status)) {
- zfcp_erp_unit_reopen_internal(unit,
- ZFCP_STATUS_COMMON_ERP_FAILED,
- 69, NULL);
- retval = ZFCP_ERP_EXIT;
- }
- break;
- }
-
- return retval;
-}
-
-static int
-zfcp_erp_strategy_statechange_detected(atomic_t * target_status, u32 erp_status)
+static void _zfcp_erp_port_reopen_all(struct zfcp_adapter *adapter,
+ int clear, u8 id, void *ref)
{
- return
- /* take it online */
- (atomic_test_mask(ZFCP_STATUS_COMMON_RUNNING, target_status) &&
- (ZFCP_STATUS_ERP_CLOSE_ONLY & erp_status)) ||
- /* take it offline */
- (!atomic_test_mask(ZFCP_STATUS_COMMON_RUNNING, target_status) &&
- !(ZFCP_STATUS_ERP_CLOSE_ONLY & erp_status));
-}
-
-static int
-zfcp_erp_strategy_check_unit(struct zfcp_unit *unit, int result)
-{
- switch (result) {
- case ZFCP_ERP_SUCCEEDED :
- atomic_set(&unit->erp_counter, 0);
- zfcp_erp_unit_unblock(unit);
- break;
- case ZFCP_ERP_FAILED :
- atomic_inc(&unit->erp_counter);
- if (atomic_read(&unit->erp_counter) > ZFCP_MAX_ERPS)
- zfcp_erp_unit_failed(unit, 21, NULL);
- break;
- case ZFCP_ERP_EXIT :
- /* nothing */
- break;
- }
-
- if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &unit->status)) {
- zfcp_erp_unit_block(unit, 0); /* for ZFCP_ERP_SUCCEEDED */
- result = ZFCP_ERP_EXIT;
- }
-
- return result;
-}
-
-static int
-zfcp_erp_strategy_check_port(struct zfcp_port *port, int result)
-{
- switch (result) {
- case ZFCP_ERP_SUCCEEDED :
- atomic_set(&port->erp_counter, 0);
- zfcp_erp_port_unblock(port);
- break;
- case ZFCP_ERP_FAILED :
- atomic_inc(&port->erp_counter);
- if (atomic_read(&port->erp_counter) > ZFCP_MAX_ERPS)
- zfcp_erp_port_failed(port, 22, NULL);
- break;
- case ZFCP_ERP_EXIT :
- /* nothing */
- break;
- }
-
- if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &port->status)) {
- zfcp_erp_port_block(port, 0); /* for ZFCP_ERP_SUCCEEDED */
- result = ZFCP_ERP_EXIT;
- }
+ struct zfcp_port *port;
- return result;
+ list_for_each_entry(port, &adapter->port_list_head, list)
+ if (!(atomic_read(&port->status) & ZFCP_STATUS_PORT_WKA))
+ _zfcp_erp_port_reopen(port, clear, id, ref);
}
-static int
-zfcp_erp_strategy_check_adapter(struct zfcp_adapter *adapter, int result)
+static void _zfcp_erp_unit_reopen_all(struct zfcp_port *port, int clear, u8 id,
+ void *ref)
{
- switch (result) {
- case ZFCP_ERP_SUCCEEDED :
- atomic_set(&adapter->erp_counter, 0);
- zfcp_erp_adapter_unblock(adapter);
- break;
- case ZFCP_ERP_FAILED :
- atomic_inc(&adapter->erp_counter);
- if (atomic_read(&adapter->erp_counter) > ZFCP_MAX_ERPS)
- zfcp_erp_adapter_failed(adapter, 23, NULL);
- break;
- case ZFCP_ERP_EXIT :
- /* nothing */
- break;
- }
-
- if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &adapter->status)) {
- zfcp_erp_adapter_block(adapter, 0); /* for ZFCP_ERP_SUCCEEDED */
- result = ZFCP_ERP_EXIT;
- }
-
- return result;
-}
-
-struct zfcp_erp_add_work {
- struct zfcp_unit *unit;
- struct work_struct work;
-};
+ struct zfcp_unit *unit;
-/**
- * zfcp_erp_scsi_scan
- * @data: pointer to a struct zfcp_erp_add_work
- *
- * Registers a logical unit with the SCSI stack.
- */
-static void zfcp_erp_scsi_scan(struct work_struct *work)
-{
- struct zfcp_erp_add_work *p =
- container_of(work, struct zfcp_erp_add_work, work);
- struct zfcp_unit *unit = p->unit;
- struct fc_rport *rport = unit->port->rport;
- scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
- unit->scsi_lun, 0);
- atomic_clear_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status);
- zfcp_unit_put(unit);
- kfree(p);
+ list_for_each_entry(unit, &port->unit_list_head, list)
+ _zfcp_erp_unit_reopen(unit, clear, id, ref);
}
-/**
- * zfcp_erp_schedule_work
- * @unit: pointer to unit which should be registered with SCSI stack
- *
- * Schedules work which registers a unit with the SCSI stack
- */
-static void
-zfcp_erp_schedule_work(struct zfcp_unit *unit)
+static void zfcp_erp_strategy_followup_actions(struct zfcp_erp_action *act)
{
- struct zfcp_erp_add_work *p;
+ struct zfcp_adapter *adapter = act->adapter;
+ struct zfcp_port *port = act->port;
+ struct zfcp_unit *unit = act->unit;
+ u32 status = act->status;
- p = kzalloc(sizeof(*p), GFP_KERNEL);
- if (!p) {
- ZFCP_LOG_NORMAL("error: Out of resources. Could not register "
- "the FCP-LUN 0x%Lx connected to "
- "the port with WWPN 0x%Lx connected to "
- "the adapter %s with the SCSI stack.\n",
- unit->fcp_lun,
- unit->port->wwpn,
- zfcp_get_busid_by_unit(unit));
- return;
- }
-
- zfcp_unit_get(unit);
- atomic_set_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status);
- INIT_WORK(&p->work, zfcp_erp_scsi_scan);
- p->unit = unit;
- schedule_work(&p->work);
-}
-
-/*
- * function:
- *
- * purpose: remaining things in good cases,
- * escalation in bad cases
- *
- * returns:
- */
-static int
-zfcp_erp_strategy_followup_actions(int action,
- struct zfcp_adapter *adapter,
- struct zfcp_port *port,
- struct zfcp_unit *unit, int status)
-{
/* initiate follow-up actions depending on success of finished action */
- switch (action) {
+ switch (act->action) {
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
if (status == ZFCP_ERP_SUCCEEDED)
- zfcp_erp_port_reopen_all_internal(adapter, 0, 70, NULL);
+ _zfcp_erp_port_reopen_all(adapter, 0, 70, NULL);
else
- zfcp_erp_adapter_reopen_internal(adapter, 0, 71, NULL);
+ _zfcp_erp_adapter_reopen(adapter, 0, 71, NULL);
break;
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
if (status == ZFCP_ERP_SUCCEEDED)
- zfcp_erp_port_reopen_internal(port, 0, 72, NULL);
+ _zfcp_erp_port_reopen(port, 0, 72, NULL);
else
- zfcp_erp_adapter_reopen_internal(adapter, 0, 73, NULL);
+ _zfcp_erp_adapter_reopen(adapter, 0, 73, NULL);
break;
case ZFCP_ERP_ACTION_REOPEN_PORT:
if (status == ZFCP_ERP_SUCCEEDED)
- zfcp_erp_unit_reopen_all_internal(port, 0, 74, NULL);
+ _zfcp_erp_unit_reopen_all(port, 0, 74, NULL);
else
- zfcp_erp_port_forced_reopen_internal(port, 0, 75, NULL);
+ _zfcp_erp_port_forced_reopen(port, 0, 75, NULL);
break;
case ZFCP_ERP_ACTION_REOPEN_UNIT:
- /* Nothing to do if status == ZFCP_ERP_SUCCEEDED */
if (status != ZFCP_ERP_SUCCEEDED)
- zfcp_erp_port_reopen_internal(unit->port, 0, 76, NULL);
+ _zfcp_erp_port_reopen(unit->port, 0, 76, NULL);
break;
}
-
- return 0;
}
-static int
-zfcp_erp_strategy_check_queues(struct zfcp_adapter *adapter)
+static void zfcp_erp_wakeup(struct zfcp_adapter *adapter)
{
unsigned long flags;
@@ -1637,1277 +597,622 @@ zfcp_erp_strategy_check_queues(struct zfcp_adapter *adapter)
}
read_unlock(&adapter->erp_lock);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
-
- return 0;
}
-/**
- * zfcp_erp_wait - wait for completion of error recovery on an adapter
- * @adapter: adapter for which to wait for completion of its error recovery
- * Return: 0
- */
-int
-zfcp_erp_wait(struct zfcp_adapter *adapter)
+static int zfcp_erp_adapter_strategy_open_qdio(struct zfcp_erp_action *act)
{
- int retval = 0;
-
- wait_event(adapter->erp_done_wqh,
- !atomic_test_mask(ZFCP_STATUS_ADAPTER_ERP_PENDING,
- &adapter->status));
-
- return retval;
+ if (zfcp_qdio_open(act->adapter))
+ return ZFCP_ERP_FAILED;
+ init_waitqueue_head(&act->adapter->request_wq);
+ atomic_set_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &act->adapter->status);
+ return ZFCP_ERP_SUCCEEDED;
}
-void zfcp_erp_modify_adapter_status(struct zfcp_adapter *adapter, u8 id,
- void *ref, u32 mask, int set_or_clear)
+static void zfcp_erp_enqueue_ptp_port(struct zfcp_adapter *adapter)
{
struct zfcp_port *port;
- u32 changed, common_mask = mask & ZFCP_COMMON_FLAGS;
-
- if (set_or_clear == ZFCP_SET) {
- changed = atomic_test_and_set_mask(mask, &adapter->status);
- } else {
- changed = atomic_test_and_clear_mask(mask, &adapter->status);
- if (mask & ZFCP_STATUS_COMMON_ERP_FAILED)
- atomic_set(&adapter->erp_counter, 0);
- }
- if (changed)
- zfcp_rec_dbf_event_adapter(id, ref, adapter);
-
- /* Deal with all underlying devices, only pass common_mask */
- if (common_mask)
- list_for_each_entry(port, &adapter->port_list_head, list)
- zfcp_erp_modify_port_status(port, id, ref, common_mask,
- set_or_clear);
+ port = zfcp_port_enqueue(adapter, adapter->peer_wwpn, 0,
+ adapter->peer_d_id);
+ if (IS_ERR(port)) /* error or port already attached */
+ return;
+ _zfcp_erp_port_reopen(port, 0, 150, NULL);
}
-/*
- * function: zfcp_erp_modify_port_status
- *
- * purpose: sets the port and all underlying devices to ERP_FAILED
- *
- */
-void zfcp_erp_modify_port_status(struct zfcp_port *port, u8 id, void *ref,
- u32 mask, int set_or_clear)
+static int zfcp_erp_adapter_strat_fsf_xconf(struct zfcp_erp_action *erp_action)
{
- struct zfcp_unit *unit;
- u32 changed, common_mask = mask & ZFCP_COMMON_FLAGS;
-
- if (set_or_clear == ZFCP_SET) {
- changed = atomic_test_and_set_mask(mask, &port->status);
- } else {
- changed = atomic_test_and_clear_mask(mask, &port->status);
- if (mask & ZFCP_STATUS_COMMON_ERP_FAILED)
- atomic_set(&port->erp_counter, 0);
- }
- if (changed)
- zfcp_rec_dbf_event_port(id, ref, port);
-
- /* Modify status of all underlying devices, only pass common mask */
- if (common_mask)
- list_for_each_entry(unit, &port->unit_list_head, list)
- zfcp_erp_modify_unit_status(unit, id, ref, common_mask,
- set_or_clear);
-}
+ int retries;
+ int sleep = 1;
+ struct zfcp_adapter *adapter = erp_action->adapter;
-/*
- * function: zfcp_erp_modify_unit_status
- *
- * purpose: sets the unit to ERP_FAILED
- *
- */
-void zfcp_erp_modify_unit_status(struct zfcp_unit *unit, u8 id, void *ref,
- u32 mask, int set_or_clear)
-{
- u32 changed;
+ atomic_clear_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, &adapter->status);
- if (set_or_clear == ZFCP_SET) {
- changed = atomic_test_and_set_mask(mask, &unit->status);
- } else {
- changed = atomic_test_and_clear_mask(mask, &unit->status);
- if (mask & ZFCP_STATUS_COMMON_ERP_FAILED) {
- atomic_set(&unit->erp_counter, 0);
+ for (retries = 7; retries; retries--) {
+ atomic_clear_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
+ &adapter->status);
+ write_lock_irq(&adapter->erp_lock);
+ zfcp_erp_action_to_running(erp_action);
+ write_unlock_irq(&adapter->erp_lock);
+ if (zfcp_fsf_exchange_config_data(erp_action)) {
+ atomic_clear_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
+ &adapter->status);
+ return ZFCP_ERP_FAILED;
}
- }
- if (changed)
- zfcp_rec_dbf_event_unit(id, ref, unit);
-}
-/*
- * function:
- *
- * purpose: Wrappper for zfcp_erp_port_reopen_all_internal
- * used to ensure the correct locking
- *
- * returns: 0 - initiated action successfully
- * <0 - failed to initiate action
- */
-int zfcp_erp_port_reopen_all(struct zfcp_adapter *adapter, int clear_mask,
- u8 id, void *ref)
-{
- int retval;
- unsigned long flags;
-
- read_lock_irqsave(&zfcp_data.config_lock, flags);
- write_lock(&adapter->erp_lock);
- retval = zfcp_erp_port_reopen_all_internal(adapter, clear_mask, id,
- ref);
- write_unlock(&adapter->erp_lock);
- read_unlock_irqrestore(&zfcp_data.config_lock, flags);
-
- return retval;
-}
+ zfcp_rec_dbf_event_thread_lock(6, adapter);
+ down(&adapter->erp_ready_sem);
+ zfcp_rec_dbf_event_thread_lock(7, adapter);
+ if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT)
+ break;
-static int zfcp_erp_port_reopen_all_internal(struct zfcp_adapter *adapter,
- int clear_mask, u8 id, void *ref)
-{
- int retval = 0;
- struct zfcp_port *port;
+ if (!(atomic_read(&adapter->status) &
+ ZFCP_STATUS_ADAPTER_HOST_CON_INIT))
+ break;
- list_for_each_entry(port, &adapter->port_list_head, list)
- if (!atomic_test_mask(ZFCP_STATUS_PORT_WKA, &port->status))
- zfcp_erp_port_reopen_internal(port, clear_mask, id,
- ref);
+ ssleep(sleep);
+ sleep *= 2;
+ }
- return retval;
-}
+ atomic_clear_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
+ &adapter->status);
-/*
- * function:
- *
- * purpose:
- *
- * returns: FIXME
- */
-static int zfcp_erp_unit_reopen_all_internal(struct zfcp_port *port,
- int clear_mask, u8 id, void *ref)
-{
- int retval = 0;
- struct zfcp_unit *unit;
+ if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_XCONFIG_OK))
+ return ZFCP_ERP_FAILED;
- list_for_each_entry(unit, &port->unit_list_head, list)
- zfcp_erp_unit_reopen_internal(unit, clear_mask, id, ref);
+ if (fc_host_port_type(adapter->scsi_host) == FC_PORTTYPE_PTP)
+ zfcp_erp_enqueue_ptp_port(adapter);
- return retval;
+ return ZFCP_ERP_SUCCEEDED;
}
-/*
- * function:
- *
- * purpose: this routine executes the 'Reopen Adapter' action
- * (the entire action is processed synchronously, since
- * there are no actions which might be run concurrently
- * per definition)
- *
- * returns: ZFCP_ERP_SUCCEEDED - action finished successfully
- * ZFCP_ERP_FAILED - action finished unsuccessfully
- */
-static int
-zfcp_erp_adapter_strategy(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_adapter_strategy_open_fsf_xport(struct zfcp_erp_action *act)
{
- int retval;
- struct zfcp_adapter *adapter = erp_action->adapter;
-
- retval = zfcp_erp_adapter_strategy_close(erp_action);
- if (erp_action->status & ZFCP_STATUS_ERP_CLOSE_ONLY)
- retval = ZFCP_ERP_EXIT;
- else
- retval = zfcp_erp_adapter_strategy_open(erp_action);
+ int ret;
+ struct zfcp_adapter *adapter = act->adapter;
- if (retval == ZFCP_ERP_FAILED) {
- ZFCP_LOG_INFO("Waiting to allow the adapter %s "
- "to recover itself\n",
- zfcp_get_busid_by_adapter(adapter));
- ssleep(ZFCP_TYPE2_RECOVERY_TIME);
- }
+ atomic_clear_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
- return retval;
-}
+ write_lock_irq(&adapter->erp_lock);
+ zfcp_erp_action_to_running(act);
+ write_unlock_irq(&adapter->erp_lock);
-/*
- * function:
- *
- * purpose:
- *
- * returns: ZFCP_ERP_SUCCEEDED - action finished successfully
- * ZFCP_ERP_FAILED - action finished unsuccessfully
- */
-static int
-zfcp_erp_adapter_strategy_close(struct zfcp_erp_action *erp_action)
-{
- int retval;
+ ret = zfcp_fsf_exchange_port_data(act);
+ if (ret == -EOPNOTSUPP)
+ return ZFCP_ERP_SUCCEEDED;
+ if (ret)
+ return ZFCP_ERP_FAILED;
- atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING,
- &erp_action->adapter->status);
- retval = zfcp_erp_adapter_strategy_generic(erp_action, 1);
- atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING,
- &erp_action->adapter->status);
+ zfcp_rec_dbf_event_thread_lock(8, adapter);
+ down(&adapter->erp_ready_sem);
+ zfcp_rec_dbf_event_thread_lock(9, adapter);
+ if (act->status & ZFCP_STATUS_ERP_TIMEDOUT)
+ return ZFCP_ERP_FAILED;
- return retval;
+ return ZFCP_ERP_SUCCEEDED;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns: ZFCP_ERP_SUCCEEDED - action finished successfully
- * ZFCP_ERP_FAILED - action finished unsuccessfully
- */
-static int
-zfcp_erp_adapter_strategy_open(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_adapter_strategy_open_fsf(struct zfcp_erp_action *act)
{
- int retval;
+ if (zfcp_erp_adapter_strat_fsf_xconf(act) == ZFCP_ERP_FAILED)
+ return ZFCP_ERP_FAILED;
- atomic_set_mask(ZFCP_STATUS_COMMON_OPENING,
- &erp_action->adapter->status);
- retval = zfcp_erp_adapter_strategy_generic(erp_action, 0);
- atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING,
- &erp_action->adapter->status);
+ if (zfcp_erp_adapter_strategy_open_fsf_xport(act) == ZFCP_ERP_FAILED)
+ return ZFCP_ERP_FAILED;
- return retval;
+ atomic_set(&act->adapter->stat_miss, 16);
+ if (zfcp_status_read_refill(act->adapter))
+ return ZFCP_ERP_FAILED;
+
+ return ZFCP_ERP_SUCCEEDED;
}
-/*
- * function: zfcp_register_adapter
- *
- * purpose: allocate the irq associated with this devno and register
- * the FSF adapter with the SCSI stack
- *
- * returns:
- */
-static int
-zfcp_erp_adapter_strategy_generic(struct zfcp_erp_action *erp_action, int close)
+static int zfcp_erp_adapter_strategy_generic(struct zfcp_erp_action *act,
+ int close)
{
int retval = ZFCP_ERP_SUCCEEDED;
+ struct zfcp_adapter *adapter = act->adapter;
if (close)
goto close_only;
- retval = zfcp_erp_adapter_strategy_open_qdio(erp_action);
+ retval = zfcp_erp_adapter_strategy_open_qdio(act);
if (retval != ZFCP_ERP_SUCCEEDED)
goto failed_qdio;
- retval = zfcp_erp_adapter_strategy_open_fsf(erp_action);
+ retval = zfcp_erp_adapter_strategy_open_fsf(act);
if (retval != ZFCP_ERP_SUCCEEDED)
goto failed_openfcp;
- atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &erp_action->adapter->status);
- goto out;
+ atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &act->adapter->status);
+ schedule_work(&act->adapter->scan_work);
+
+ return ZFCP_ERP_SUCCEEDED;
close_only:
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
- &erp_action->adapter->status);
+ &act->adapter->status);
failed_openfcp:
- zfcp_close_fsf(erp_action->adapter);
+ /* close queues to ensure that buffers are not accessed by adapter */
+ zfcp_qdio_close(adapter);
+ zfcp_fsf_req_dismiss_all(adapter);
+ adapter->fsf_req_seq_no = 0;
+ /* all ports and units are closed */
+ zfcp_erp_modify_adapter_status(adapter, 24, NULL,
+ ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR);
failed_qdio:
atomic_clear_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK |
ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
ZFCP_STATUS_ADAPTER_XPORT_OK,
- &erp_action->adapter->status);
- out:
+ &act->adapter->status);
return retval;
}
-/*
- * function: zfcp_qdio_init
- *
- * purpose: setup QDIO operation for specified adapter
- *
- * returns: 0 - successful setup
- * !0 - failed setup
- */
-static int
-zfcp_erp_adapter_strategy_open_qdio(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_adapter_strategy(struct zfcp_erp_action *act)
{
int retval;
- int i;
- volatile struct qdio_buffer_element *sbale;
- struct zfcp_adapter *adapter = erp_action->adapter;
-
- if (atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) {
- ZFCP_LOG_NORMAL("bug: second attempt to set up QDIO on "
- "adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- goto failed_sanity;
- }
-
- if (qdio_establish(&adapter->qdio_init_data) != 0) {
- ZFCP_LOG_INFO("error: establishment of QDIO queues failed "
- "on adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- goto failed_qdio_establish;
- }
-
- if (qdio_activate(adapter->ccw_device, 0) != 0) {
- ZFCP_LOG_INFO("error: activation of QDIO queues failed "
- "on adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- goto failed_qdio_activate;
- }
-
- /*
- * put buffers into response queue,
- */
- for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
- sbale = &(adapter->response_queue.buffer[i]->element[0]);
- sbale->length = 0;
- sbale->flags = SBAL_FLAGS_LAST_ENTRY;
- sbale->addr = NULL;
- }
-
- ZFCP_LOG_TRACE("calling do_QDIO on adapter %s (flags=0x%x, "
- "queue_no=%i, index_in_queue=%i, count=%i)\n",
- zfcp_get_busid_by_adapter(adapter),
- QDIO_FLAG_SYNC_INPUT, 0, 0, QDIO_MAX_BUFFERS_PER_Q);
-
- retval = do_QDIO(adapter->ccw_device,
- QDIO_FLAG_SYNC_INPUT,
- 0, 0, QDIO_MAX_BUFFERS_PER_Q, NULL);
-
- if (retval) {
- ZFCP_LOG_NORMAL("bug: setup of QDIO failed (retval=%d)\n",
- retval);
- goto failed_do_qdio;
- } else {
- adapter->response_queue.free_index = 0;
- atomic_set(&adapter->response_queue.free_count, 0);
- ZFCP_LOG_DEBUG("%i buffers successfully enqueued to "
- "response queue\n", QDIO_MAX_BUFFERS_PER_Q);
- }
- /* set index of first avalable SBALS / number of available SBALS */
- adapter->request_queue.free_index = 0;
- atomic_set(&adapter->request_queue.free_count, QDIO_MAX_BUFFERS_PER_Q);
- adapter->request_queue.distance_from_int = 0;
-
- /* initialize waitqueue used to wait for free SBALs in requests queue */
- init_waitqueue_head(&adapter->request_wq);
- /* ok, we did it - skip all cleanups for different failures */
- atomic_set_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status);
- retval = ZFCP_ERP_SUCCEEDED;
- goto out;
+ atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &act->adapter->status);
+ zfcp_erp_adapter_strategy_generic(act, 1); /* close */
+ atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &act->adapter->status);
+ if (act->status & ZFCP_STATUS_ERP_CLOSE_ONLY)
+ return ZFCP_ERP_EXIT;
- failed_do_qdio:
- /* NOP */
+ atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &act->adapter->status);
+ retval = zfcp_erp_adapter_strategy_generic(act, 0); /* open */
+ atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &act->adapter->status);
- failed_qdio_activate:
- while (qdio_shutdown(adapter->ccw_device,
- QDIO_FLAG_CLEANUP_USING_CLEAR) == -EINPROGRESS)
- ssleep(1);
-
- failed_qdio_establish:
- failed_sanity:
- retval = ZFCP_ERP_FAILED;
+ if (retval == ZFCP_ERP_FAILED)
+ ssleep(8);
- out:
return retval;
}
-
-static int
-zfcp_erp_adapter_strategy_open_fsf(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_port_forced_strategy_close(struct zfcp_erp_action *act)
{
int retval;
- retval = zfcp_erp_adapter_strategy_open_fsf_xconfig(erp_action);
- if (retval == ZFCP_ERP_FAILED)
+ retval = zfcp_fsf_close_physical_port(act);
+ if (retval == -ENOMEM)
+ return ZFCP_ERP_NOMEM;
+ act->step = ZFCP_ERP_STEP_PHYS_PORT_CLOSING;
+ if (retval)
return ZFCP_ERP_FAILED;
- retval = zfcp_erp_adapter_strategy_open_fsf_xport(erp_action);
- if (retval == ZFCP_ERP_FAILED)
- return ZFCP_ERP_FAILED;
-
- return zfcp_erp_adapter_strategy_open_fsf_statusread(erp_action);
+ return ZFCP_ERP_CONTINUES;
}
-static int
-zfcp_erp_adapter_strategy_open_fsf_xconfig(struct zfcp_erp_action *erp_action)
+static void zfcp_erp_port_strategy_clearstati(struct zfcp_port *port)
{
- int retval = ZFCP_ERP_SUCCEEDED;
- int retries;
- int sleep = ZFCP_EXCHANGE_CONFIG_DATA_FIRST_SLEEP;
- struct zfcp_adapter *adapter = erp_action->adapter;
-
- atomic_clear_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, &adapter->status);
-
- for (retries = ZFCP_EXCHANGE_CONFIG_DATA_RETRIES; retries; retries--) {
- atomic_clear_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
- &adapter->status);
- ZFCP_LOG_DEBUG("Doing exchange config data\n");
- write_lock_irq(&adapter->erp_lock);
- zfcp_erp_action_to_running(erp_action);
- write_unlock_irq(&adapter->erp_lock);
- if (zfcp_fsf_exchange_config_data(erp_action)) {
- retval = ZFCP_ERP_FAILED;
- ZFCP_LOG_INFO("error: initiation of exchange of "
- "configuration data failed for "
- "adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- break;
- }
- ZFCP_LOG_DEBUG("Xchange underway\n");
-
- /*
- * Why this works:
- * Both the normal completion handler as well as the timeout
- * handler will do an 'up' when the 'exchange config data'
- * request completes or times out. Thus, the signal to go on
- * won't be lost utilizing this semaphore.
- * Furthermore, this 'adapter_reopen' action is
- * guaranteed to be the only action being there (highest action
- * which prevents other actions from being created).
- * Resulting from that, the wake signal recognized here
- * _must_ be the one belonging to the 'exchange config
- * data' request.
- */
- zfcp_rec_dbf_event_thread(6, adapter, 1);
- down(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread(7, adapter, 1);
- if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT) {
- ZFCP_LOG_INFO("error: exchange of configuration data "
- "for adapter %s timed out\n",
- zfcp_get_busid_by_adapter(adapter));
- break;
- }
-
- if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
- &adapter->status))
- break;
+ atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING |
+ ZFCP_STATUS_COMMON_CLOSING |
+ ZFCP_STATUS_COMMON_ACCESS_DENIED |
+ ZFCP_STATUS_PORT_DID_DID |
+ ZFCP_STATUS_PORT_PHYS_CLOSING |
+ ZFCP_STATUS_PORT_INVALID_WWPN,
+ &port->status);
+}
- ZFCP_LOG_DEBUG("host connection still initialising... "
- "waiting and retrying...\n");
- /* sleep a little bit before retry */
- ssleep(sleep);
- sleep *= 2;
- }
+static int zfcp_erp_port_forced_strategy(struct zfcp_erp_action *erp_action)
+{
+ struct zfcp_port *port = erp_action->port;
+ int status = atomic_read(&port->status);
- atomic_clear_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
- &adapter->status);
+ switch (erp_action->step) {
+ case ZFCP_ERP_STEP_UNINITIALIZED:
+ zfcp_erp_port_strategy_clearstati(port);
+ if ((status & ZFCP_STATUS_PORT_PHYS_OPEN) &&
+ (status & ZFCP_STATUS_COMMON_OPEN))
+ return zfcp_erp_port_forced_strategy_close(erp_action);
+ else
+ return ZFCP_ERP_FAILED;
- if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
- &adapter->status)) {
- ZFCP_LOG_INFO("error: exchange of configuration data for "
- "adapter %s failed\n",
- zfcp_get_busid_by_adapter(adapter));
- retval = ZFCP_ERP_FAILED;
+ case ZFCP_ERP_STEP_PHYS_PORT_CLOSING:
+ if (status & ZFCP_STATUS_PORT_PHYS_OPEN)
+ return ZFCP_ERP_SUCCEEDED;
}
-
- return retval;
+ return ZFCP_ERP_FAILED;
}
-static int
-zfcp_erp_adapter_strategy_open_fsf_xport(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_port_strategy_close(struct zfcp_erp_action *erp_action)
{
- int ret;
- struct zfcp_adapter *adapter;
-
- adapter = erp_action->adapter;
- atomic_clear_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
-
- write_lock_irq(&adapter->erp_lock);
- zfcp_erp_action_to_running(erp_action);
- write_unlock_irq(&adapter->erp_lock);
+ int retval;
- ret = zfcp_fsf_exchange_port_data(erp_action);
- if (ret == -EOPNOTSUPP) {
- return ZFCP_ERP_SUCCEEDED;
- } else if (ret) {
+ retval = zfcp_fsf_close_port(erp_action);
+ if (retval == -ENOMEM)
+ return ZFCP_ERP_NOMEM;
+ erp_action->step = ZFCP_ERP_STEP_PORT_CLOSING;
+ if (retval)
return ZFCP_ERP_FAILED;
- }
-
- ret = ZFCP_ERP_SUCCEEDED;
- zfcp_rec_dbf_event_thread(8, adapter, 1);
- down(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread(9, adapter, 1);
- if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT) {
- ZFCP_LOG_INFO("error: exchange port data timed out (adapter "
- "%s)\n", zfcp_get_busid_by_adapter(adapter));
- ret = ZFCP_ERP_FAILED;
- }
-
- /* don't treat as error for the sake of compatibility */
- if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status))
- ZFCP_LOG_INFO("warning: exchange port data failed (adapter "
- "%s\n", zfcp_get_busid_by_adapter(adapter));
-
- return ret;
+ return ZFCP_ERP_CONTINUES;
}
-static int
-zfcp_erp_adapter_strategy_open_fsf_statusread(struct zfcp_erp_action
- *erp_action)
+static int zfcp_erp_port_strategy_open_port(struct zfcp_erp_action *erp_action)
{
- int retval = ZFCP_ERP_SUCCEEDED;
- int temp_ret;
- struct zfcp_adapter *adapter = erp_action->adapter;
- int i;
-
- adapter->status_read_failed = 0;
- for (i = 0; i < ZFCP_STATUS_READS_RECOM; i++) {
- temp_ret = zfcp_fsf_status_read(adapter, ZFCP_WAIT_FOR_SBAL);
- if (temp_ret < 0) {
- ZFCP_LOG_INFO("error: set-up of unsolicited status "
- "notification failed on adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- retval = ZFCP_ERP_FAILED;
- i--;
- break;
- }
- }
+ int retval;
- return retval;
+ retval = zfcp_fsf_open_port(erp_action);
+ if (retval == -ENOMEM)
+ return ZFCP_ERP_NOMEM;
+ erp_action->step = ZFCP_ERP_STEP_PORT_OPENING;
+ if (retval)
+ return ZFCP_ERP_FAILED;
+ return ZFCP_ERP_CONTINUES;
}
-/*
- * function:
- *
- * purpose: this routine executes the 'Reopen Physical Port' action
- *
- * returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
- * ZFCP_ERP_SUCCEEDED - action finished successfully
- * ZFCP_ERP_FAILED - action finished unsuccessfully
- */
-static int
-zfcp_erp_port_forced_strategy(struct zfcp_erp_action *erp_action)
+static void zfcp_erp_port_strategy_open_ns_wake(struct zfcp_erp_action *ns_act)
{
- int retval = ZFCP_ERP_FAILED;
- struct zfcp_port *port = erp_action->port;
-
- switch (erp_action->step) {
-
- /*
- * FIXME:
- * the ULP spec. begs for waiting for oustanding commands
- */
- case ZFCP_ERP_STEP_UNINITIALIZED:
- zfcp_erp_port_strategy_clearstati(port);
- /*
- * it would be sufficient to test only the normal open flag
- * since the phys. open flag cannot be set if the normal
- * open flag is unset - however, this is for readabilty ...
- */
- if (atomic_test_mask((ZFCP_STATUS_PORT_PHYS_OPEN |
- ZFCP_STATUS_COMMON_OPEN),
- &port->status)) {
- ZFCP_LOG_DEBUG("port 0x%016Lx is open -> trying "
- "close physical\n", port->wwpn);
- retval =
- zfcp_erp_port_forced_strategy_close(erp_action);
- } else
- retval = ZFCP_ERP_FAILED;
- break;
+ unsigned long flags;
+ struct zfcp_adapter *adapter = ns_act->adapter;
+ struct zfcp_erp_action *act, *tmp;
+ int status;
- case ZFCP_ERP_STEP_PHYS_PORT_CLOSING:
- if (atomic_test_mask(ZFCP_STATUS_PORT_PHYS_OPEN,
- &port->status)) {
- ZFCP_LOG_DEBUG("close physical failed for port "
- "0x%016Lx\n", port->wwpn);
- retval = ZFCP_ERP_FAILED;
- } else
- retval = ZFCP_ERP_SUCCEEDED;
- break;
+ read_lock_irqsave(&adapter->erp_lock, flags);
+ list_for_each_entry_safe(act, tmp, &adapter->erp_running_head, list) {
+ if (act->step == ZFCP_ERP_STEP_NAMESERVER_OPEN) {
+ status = atomic_read(&adapter->nameserver_port->status);
+ if (status & ZFCP_STATUS_COMMON_ERP_FAILED)
+ zfcp_erp_port_failed(act->port, 27, NULL);
+ zfcp_erp_action_ready(act);
+ }
}
-
- return retval;
+ read_unlock_irqrestore(&adapter->erp_lock, flags);
}
-/*
- * function:
- *
- * purpose: this routine executes the 'Reopen Port' action
- *
- * returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
- * ZFCP_ERP_SUCCEEDED - action finished successfully
- * ZFCP_ERP_FAILED - action finished unsuccessfully
- */
-static int
-zfcp_erp_port_strategy(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_port_strategy_open_nameserver(struct zfcp_erp_action *act)
{
- int retval = ZFCP_ERP_FAILED;
- struct zfcp_port *port = erp_action->port;
-
- switch (erp_action->step) {
+ int retval;
- /*
- * FIXME:
- * the ULP spec. begs for waiting for oustanding commands
- */
+ switch (act->step) {
case ZFCP_ERP_STEP_UNINITIALIZED:
- zfcp_erp_port_strategy_clearstati(port);
- if (atomic_test_mask(ZFCP_STATUS_COMMON_OPEN, &port->status)) {
- ZFCP_LOG_DEBUG("port 0x%016Lx is open -> trying "
- "close\n", port->wwpn);
- retval = zfcp_erp_port_strategy_close(erp_action);
- goto out;
- } /* else it's already closed, open it */
- break;
-
+ case ZFCP_ERP_STEP_PHYS_PORT_CLOSING:
case ZFCP_ERP_STEP_PORT_CLOSING:
- if (atomic_test_mask(ZFCP_STATUS_COMMON_OPEN, &port->status)) {
- ZFCP_LOG_DEBUG("close failed for port 0x%016Lx\n",
- port->wwpn);
+ return zfcp_erp_port_strategy_open_port(act);
+
+ case ZFCP_ERP_STEP_PORT_OPENING:
+ if (atomic_read(&act->port->status) & ZFCP_STATUS_COMMON_OPEN)
+ retval = ZFCP_ERP_SUCCEEDED;
+ else
retval = ZFCP_ERP_FAILED;
- goto out;
- } /* else it's closed now, open it */
- break;
- }
- if (erp_action->status & ZFCP_STATUS_ERP_CLOSE_ONLY)
- retval = ZFCP_ERP_EXIT;
- else
- retval = zfcp_erp_port_strategy_open(erp_action);
+ /* this is needed anyway */
+ zfcp_erp_port_strategy_open_ns_wake(act);
+ return retval;
- out:
- return retval;
+ default:
+ return ZFCP_ERP_FAILED;
+ }
}
-static int
-zfcp_erp_port_strategy_open(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_port_strategy_open_lookup(struct zfcp_erp_action *act)
{
int retval;
- if (atomic_test_mask(ZFCP_STATUS_PORT_WKA,
- &erp_action->port->status))
- retval = zfcp_erp_port_strategy_open_nameserver(erp_action);
- else
- retval = zfcp_erp_port_strategy_open_common(erp_action);
-
- return retval;
+ retval = zfcp_fc_ns_gid_pn_request(act);
+ if (retval == -ENOMEM)
+ return ZFCP_ERP_NOMEM;
+ act->step = ZFCP_ERP_STEP_NAMESERVER_LOOKUP;
+ if (retval)
+ return ZFCP_ERP_FAILED;
+ return ZFCP_ERP_CONTINUES;
}
-static int
-zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_open_ptp_port(struct zfcp_erp_action *act)
{
- int retval = 0;
- struct zfcp_adapter *adapter = erp_action->adapter;
- struct zfcp_port *port = erp_action->port;
+ struct zfcp_adapter *adapter = act->adapter;
+ struct zfcp_port *port = act->port;
- switch (erp_action->step) {
+ if (port->wwpn != adapter->peer_wwpn) {
+ dev_err(&adapter->ccw_device->dev,
+ "Failed to open port 0x%016Lx, "
+ "Peer WWPN 0x%016Lx does not "
+ "match.\n", port->wwpn,
+ adapter->peer_wwpn);
+ zfcp_erp_port_failed(port, 25, NULL);
+ return ZFCP_ERP_FAILED;
+ }
+ port->d_id = adapter->peer_d_id;
+ atomic_set_mask(ZFCP_STATUS_PORT_DID_DID, &port->status);
+ return zfcp_erp_port_strategy_open_port(act);
+}
+
+static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act)
+{
+ struct zfcp_adapter *adapter = act->adapter;
+ struct zfcp_port *port = act->port;
+ struct zfcp_port *ns_port = adapter->nameserver_port;
+ int p_status = atomic_read(&port->status);
+ switch (act->step) {
case ZFCP_ERP_STEP_UNINITIALIZED:
case ZFCP_ERP_STEP_PHYS_PORT_CLOSING:
case ZFCP_ERP_STEP_PORT_CLOSING:
- if (fc_host_port_type(adapter->scsi_host) == FC_PORTTYPE_PTP) {
- if (port->wwpn != adapter->peer_wwpn) {
- ZFCP_LOG_NORMAL("Failed to open port 0x%016Lx "
- "on adapter %s.\nPeer WWPN "
- "0x%016Lx does not match\n",
- port->wwpn,
- zfcp_get_busid_by_adapter(adapter),
- adapter->peer_wwpn);
- zfcp_erp_port_failed(port, 25, NULL);
- retval = ZFCP_ERP_FAILED;
- break;
- }
- port->d_id = adapter->peer_d_id;
- atomic_set_mask(ZFCP_STATUS_PORT_DID_DID, &port->status);
- retval = zfcp_erp_port_strategy_open_port(erp_action);
- break;
+ if (fc_host_port_type(adapter->scsi_host) == FC_PORTTYPE_PTP)
+ return zfcp_erp_open_ptp_port(act);
+ if (!ns_port) {
+ dev_err(&adapter->ccw_device->dev,
+ "Nameserver port unavailable.\n");
+ return ZFCP_ERP_FAILED;
}
- if (!(adapter->nameserver_port)) {
- retval = zfcp_nameserver_enqueue(adapter);
- if (retval != 0) {
- ZFCP_LOG_NORMAL("error: nameserver port "
- "unavailable for adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- retval = ZFCP_ERP_FAILED;
- break;
- }
- }
- if (!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
- &adapter->nameserver_port->status)) {
- ZFCP_LOG_DEBUG("nameserver port is not open -> open "
- "nameserver port\n");
+ if (!(atomic_read(&ns_port->status) &
+ ZFCP_STATUS_COMMON_UNBLOCKED)) {
/* nameserver port may live again */
atomic_set_mask(ZFCP_STATUS_COMMON_RUNNING,
- &adapter->nameserver_port->status);
- if (zfcp_erp_port_reopen(adapter->nameserver_port, 0,
- 77, erp_action) >= 0) {
- erp_action->step =
- ZFCP_ERP_STEP_NAMESERVER_OPEN;
- retval = ZFCP_ERP_CONTINUES;
- } else
- retval = ZFCP_ERP_FAILED;
- break;
+ &ns_port->status);
+ if (zfcp_erp_port_reopen(ns_port, 0, 77, act) >= 0) {
+ act->step = ZFCP_ERP_STEP_NAMESERVER_OPEN;
+ return ZFCP_ERP_CONTINUES;
+ }
+ return ZFCP_ERP_FAILED;
}
/* else nameserver port is already open, fall through */
case ZFCP_ERP_STEP_NAMESERVER_OPEN:
- if (!atomic_test_mask(ZFCP_STATUS_COMMON_OPEN,
- &adapter->nameserver_port->status)) {
- ZFCP_LOG_DEBUG("open failed for nameserver port\n");
- retval = ZFCP_ERP_FAILED;
- } else {
- ZFCP_LOG_DEBUG("nameserver port is open -> "
- "nameserver look-up for port 0x%016Lx\n",
- port->wwpn);
- retval = zfcp_erp_port_strategy_open_common_lookup
- (erp_action);
- }
- break;
+ if (!(atomic_read(&ns_port->status) & ZFCP_STATUS_COMMON_OPEN))
+ return ZFCP_ERP_FAILED;
+ return zfcp_erp_port_strategy_open_lookup(act);
case ZFCP_ERP_STEP_NAMESERVER_LOOKUP:
- if (!atomic_test_mask(ZFCP_STATUS_PORT_DID_DID, &port->status)) {
- if (atomic_test_mask
- (ZFCP_STATUS_PORT_INVALID_WWPN, &port->status)) {
- ZFCP_LOG_DEBUG("nameserver look-up failed "
- "for port 0x%016Lx "
- "(misconfigured WWPN?)\n",
- port->wwpn);
+ if (!(p_status & ZFCP_STATUS_PORT_DID_DID)) {
+ if (p_status & (ZFCP_STATUS_PORT_INVALID_WWPN)) {
zfcp_erp_port_failed(port, 26, NULL);
- retval = ZFCP_ERP_EXIT;
- } else {
- ZFCP_LOG_DEBUG("nameserver look-up failed for "
- "port 0x%016Lx\n", port->wwpn);
- retval = ZFCP_ERP_FAILED;
+ return ZFCP_ERP_EXIT;
}
- } else {
- ZFCP_LOG_DEBUG("port 0x%016Lx has d_id=0x%06x -> "
- "trying open\n", port->wwpn, port->d_id);
- retval = zfcp_erp_port_strategy_open_port(erp_action);
+ return ZFCP_ERP_FAILED;
}
- break;
+ return zfcp_erp_port_strategy_open_port(act);
case ZFCP_ERP_STEP_PORT_OPENING:
/* D_ID might have changed during open */
- if (atomic_test_mask((ZFCP_STATUS_COMMON_OPEN |
- ZFCP_STATUS_PORT_DID_DID),
- &port->status)) {
- ZFCP_LOG_DEBUG("port 0x%016Lx is open\n", port->wwpn);
- retval = ZFCP_ERP_SUCCEEDED;
- } else {
- ZFCP_LOG_DEBUG("open failed for port 0x%016Lx\n",
- port->wwpn);
- retval = ZFCP_ERP_FAILED;
- }
- break;
-
- default:
- ZFCP_LOG_NORMAL("bug: unknown erp step 0x%08x\n",
- erp_action->step);
- retval = ZFCP_ERP_FAILED;
+ if ((p_status & ZFCP_STATUS_COMMON_OPEN) &&
+ (p_status & ZFCP_STATUS_PORT_DID_DID))
+ return ZFCP_ERP_SUCCEEDED;
+ /* fall through otherwise */
}
+ return ZFCP_ERP_FAILED;
+}
- return retval;
+static int zfcp_erp_port_strategy_open(struct zfcp_erp_action *act)
+{
+ if (atomic_read(&act->port->status) & (ZFCP_STATUS_PORT_WKA))
+ return zfcp_erp_port_strategy_open_nameserver(act);
+ return zfcp_erp_port_strategy_open_common(act);
}
-static int
-zfcp_erp_port_strategy_open_nameserver(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_port_strategy(struct zfcp_erp_action *erp_action)
{
- int retval;
struct zfcp_port *port = erp_action->port;
switch (erp_action->step) {
-
case ZFCP_ERP_STEP_UNINITIALIZED:
- case ZFCP_ERP_STEP_PHYS_PORT_CLOSING:
- case ZFCP_ERP_STEP_PORT_CLOSING:
- ZFCP_LOG_DEBUG("port 0x%016Lx has d_id=0x%06x -> trying open\n",
- port->wwpn, port->d_id);
- retval = zfcp_erp_port_strategy_open_port(erp_action);
+ zfcp_erp_port_strategy_clearstati(port);
+ if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_OPEN)
+ return zfcp_erp_port_strategy_close(erp_action);
break;
- case ZFCP_ERP_STEP_PORT_OPENING:
- if (atomic_test_mask(ZFCP_STATUS_COMMON_OPEN, &port->status)) {
- ZFCP_LOG_DEBUG("WKA port is open\n");
- retval = ZFCP_ERP_SUCCEEDED;
- } else {
- ZFCP_LOG_DEBUG("open failed for WKA port\n");
- retval = ZFCP_ERP_FAILED;
- }
- /* this is needed anyway (dont care for retval of wakeup) */
- ZFCP_LOG_DEBUG("continue other open port operations\n");
- zfcp_erp_port_strategy_open_nameserver_wakeup(erp_action);
+ case ZFCP_ERP_STEP_PORT_CLOSING:
+ if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_OPEN)
+ return ZFCP_ERP_FAILED;
break;
-
- default:
- ZFCP_LOG_NORMAL("bug: unknown erp step 0x%08x\n",
- erp_action->step);
- retval = ZFCP_ERP_FAILED;
}
+ if (erp_action->status & ZFCP_STATUS_ERP_CLOSE_ONLY)
+ return ZFCP_ERP_EXIT;
+ else
+ return zfcp_erp_port_strategy_open(erp_action);
- return retval;
-}
-
-/*
- * function:
- *
- * purpose: makes the erp thread continue with reopen (physical) port
- * actions which have been paused until the name server port
- * is opened (or failed)
- *
- * returns: 0 (a kind of void retval, its not used)
- */
-static int
-zfcp_erp_port_strategy_open_nameserver_wakeup(struct zfcp_erp_action
- *ns_erp_action)
-{
- int retval = 0;
- unsigned long flags;
- struct zfcp_adapter *adapter = ns_erp_action->adapter;
- struct zfcp_erp_action *erp_action, *tmp;
-
- read_lock_irqsave(&adapter->erp_lock, flags);
- list_for_each_entry_safe(erp_action, tmp, &adapter->erp_running_head,
- list) {
- if (erp_action->step == ZFCP_ERP_STEP_NAMESERVER_OPEN) {
- if (atomic_test_mask(
- ZFCP_STATUS_COMMON_ERP_FAILED,
- &adapter->nameserver_port->status))
- zfcp_erp_port_failed(erp_action->port, 27,
- NULL);
- zfcp_erp_action_ready(erp_action);
- }
- }
- read_unlock_irqrestore(&adapter->erp_lock, flags);
-
- return retval;
-}
-
-/*
- * function:
- *
- * purpose:
- *
- * returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
- * ZFCP_ERP_FAILED - action finished unsuccessfully
- */
-static int
-zfcp_erp_port_forced_strategy_close(struct zfcp_erp_action *erp_action)
-{
- int retval;
-
- retval = zfcp_fsf_close_physical_port(erp_action);
- if (retval == -ENOMEM) {
- retval = ZFCP_ERP_NOMEM;
- goto out;
- }
- erp_action->step = ZFCP_ERP_STEP_PHYS_PORT_CLOSING;
- if (retval != 0) {
- /* could not send 'open', fail */
- retval = ZFCP_ERP_FAILED;
- goto out;
- }
- retval = ZFCP_ERP_CONTINUES;
- out:
- return retval;
+ return ZFCP_ERP_FAILED;
}
-static int
-zfcp_erp_port_strategy_clearstati(struct zfcp_port *port)
+static void zfcp_erp_unit_strategy_clearstati(struct zfcp_unit *unit)
{
- int retval = 0;
-
atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING |
ZFCP_STATUS_COMMON_CLOSING |
ZFCP_STATUS_COMMON_ACCESS_DENIED |
- ZFCP_STATUS_PORT_DID_DID |
- ZFCP_STATUS_PORT_PHYS_CLOSING |
- ZFCP_STATUS_PORT_INVALID_WWPN,
- &port->status);
- return retval;
-}
-
-/*
- * function:
- *
- * purpose:
- *
- * returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
- * ZFCP_ERP_FAILED - action finished unsuccessfully
- */
-static int
-zfcp_erp_port_strategy_close(struct zfcp_erp_action *erp_action)
-{
- int retval;
-
- retval = zfcp_fsf_close_port(erp_action);
- if (retval == -ENOMEM) {
- retval = ZFCP_ERP_NOMEM;
- goto out;
- }
- erp_action->step = ZFCP_ERP_STEP_PORT_CLOSING;
- if (retval != 0) {
- /* could not send 'close', fail */
- retval = ZFCP_ERP_FAILED;
- goto out;
- }
- retval = ZFCP_ERP_CONTINUES;
- out:
- return retval;
+ ZFCP_STATUS_UNIT_SHARED |
+ ZFCP_STATUS_UNIT_READONLY,
+ &unit->status);
}
-/*
- * function:
- *
- * purpose:
- *
- * returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
- * ZFCP_ERP_FAILED - action finished unsuccessfully
- */
-static int
-zfcp_erp_port_strategy_open_port(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_unit_strategy_close(struct zfcp_erp_action *erp_action)
{
- int retval;
-
- retval = zfcp_fsf_open_port(erp_action);
- if (retval == -ENOMEM) {
- retval = ZFCP_ERP_NOMEM;
- goto out;
- }
- erp_action->step = ZFCP_ERP_STEP_PORT_OPENING;
- if (retval != 0) {
- /* could not send 'open', fail */
- retval = ZFCP_ERP_FAILED;
- goto out;
- }
- retval = ZFCP_ERP_CONTINUES;
- out:
- return retval;
+ int retval = zfcp_fsf_close_unit(erp_action);
+ if (retval == -ENOMEM)
+ return ZFCP_ERP_NOMEM;
+ erp_action->step = ZFCP_ERP_STEP_UNIT_CLOSING;
+ if (retval)
+ return ZFCP_ERP_FAILED;
+ return ZFCP_ERP_CONTINUES;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
- * ZFCP_ERP_FAILED - action finished unsuccessfully
- */
-static int
-zfcp_erp_port_strategy_open_common_lookup(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_unit_strategy_open(struct zfcp_erp_action *erp_action)
{
- int retval;
-
- retval = zfcp_ns_gid_pn_request(erp_action);
- if (retval == -ENOMEM) {
- retval = ZFCP_ERP_NOMEM;
- goto out;
- }
- erp_action->step = ZFCP_ERP_STEP_NAMESERVER_LOOKUP;
- if (retval != 0) {
- /* could not send nameserver request, fail */
- retval = ZFCP_ERP_FAILED;
- goto out;
- }
- retval = ZFCP_ERP_CONTINUES;
- out:
- return retval;
+ int retval = zfcp_fsf_open_unit(erp_action);
+ if (retval == -ENOMEM)
+ return ZFCP_ERP_NOMEM;
+ erp_action->step = ZFCP_ERP_STEP_UNIT_OPENING;
+ if (retval)
+ return ZFCP_ERP_FAILED;
+ return ZFCP_ERP_CONTINUES;
}
-/*
- * function:
- *
- * purpose: this routine executes the 'Reopen Unit' action
- * currently no retries
- *
- * returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
- * ZFCP_ERP_SUCCEEDED - action finished successfully
- * ZFCP_ERP_FAILED - action finished unsuccessfully
- */
-static int
-zfcp_erp_unit_strategy(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_unit_strategy(struct zfcp_erp_action *erp_action)
{
- int retval = ZFCP_ERP_FAILED;
struct zfcp_unit *unit = erp_action->unit;
switch (erp_action->step) {
-
- /*
- * FIXME:
- * the ULP spec. begs for waiting for oustanding commands
- */
case ZFCP_ERP_STEP_UNINITIALIZED:
zfcp_erp_unit_strategy_clearstati(unit);
- if (atomic_test_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status)) {
- ZFCP_LOG_DEBUG("unit 0x%016Lx is open -> "
- "trying close\n", unit->fcp_lun);
- retval = zfcp_erp_unit_strategy_close(erp_action);
- break;
- }
- /* else it's already closed, fall through */
+ if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_OPEN)
+ return zfcp_erp_unit_strategy_close(erp_action);
+ /* already closed, fall through */
case ZFCP_ERP_STEP_UNIT_CLOSING:
- if (atomic_test_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status)) {
- ZFCP_LOG_DEBUG("close failed for unit 0x%016Lx\n",
- unit->fcp_lun);
- retval = ZFCP_ERP_FAILED;
- } else {
- if (erp_action->status & ZFCP_STATUS_ERP_CLOSE_ONLY)
- retval = ZFCP_ERP_EXIT;
- else {
- ZFCP_LOG_DEBUG("unit 0x%016Lx is not open -> "
- "trying open\n", unit->fcp_lun);
- retval =
- zfcp_erp_unit_strategy_open(erp_action);
- }
- }
- break;
+ if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_OPEN)
+ return ZFCP_ERP_FAILED;
+ if (erp_action->status & ZFCP_STATUS_ERP_CLOSE_ONLY)
+ return ZFCP_ERP_EXIT;
+ return zfcp_erp_unit_strategy_open(erp_action);
case ZFCP_ERP_STEP_UNIT_OPENING:
- if (atomic_test_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status)) {
- ZFCP_LOG_DEBUG("unit 0x%016Lx is open\n",
- unit->fcp_lun);
- retval = ZFCP_ERP_SUCCEEDED;
- } else {
- ZFCP_LOG_DEBUG("open failed for unit 0x%016Lx\n",
- unit->fcp_lun);
- retval = ZFCP_ERP_FAILED;
- }
- break;
+ if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_OPEN)
+ return ZFCP_ERP_SUCCEEDED;
}
-
- return retval;
+ return ZFCP_ERP_FAILED;
}
-static int
-zfcp_erp_unit_strategy_clearstati(struct zfcp_unit *unit)
+static int zfcp_erp_strategy_check_unit(struct zfcp_unit *unit, int result)
{
- int retval = 0;
-
- atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING |
- ZFCP_STATUS_COMMON_CLOSING |
- ZFCP_STATUS_COMMON_ACCESS_DENIED |
- ZFCP_STATUS_UNIT_SHARED |
- ZFCP_STATUS_UNIT_READONLY,
- &unit->status);
+ switch (result) {
+ case ZFCP_ERP_SUCCEEDED :
+ atomic_set(&unit->erp_counter, 0);
+ zfcp_erp_unit_unblock(unit);
+ break;
+ case ZFCP_ERP_FAILED :
+ atomic_inc(&unit->erp_counter);
+ if (atomic_read(&unit->erp_counter) > ZFCP_MAX_ERPS)
+ zfcp_erp_unit_failed(unit, 21, NULL);
+ break;
+ }
- return retval;
+ if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
+ zfcp_erp_unit_block(unit, 0);
+ result = ZFCP_ERP_EXIT;
+ }
+ return result;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
- * ZFCP_ERP_FAILED - action finished unsuccessfully
- */
-static int
-zfcp_erp_unit_strategy_close(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_strategy_check_port(struct zfcp_port *port, int result)
{
- int retval;
+ switch (result) {
+ case ZFCP_ERP_SUCCEEDED :
+ atomic_set(&port->erp_counter, 0);
+ zfcp_erp_port_unblock(port);
+ break;
- retval = zfcp_fsf_close_unit(erp_action);
- if (retval == -ENOMEM) {
- retval = ZFCP_ERP_NOMEM;
- goto out;
- }
- erp_action->step = ZFCP_ERP_STEP_UNIT_CLOSING;
- if (retval != 0) {
- /* could not send 'close', fail */
- retval = ZFCP_ERP_FAILED;
- goto out;
+ case ZFCP_ERP_FAILED :
+ if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_NOESC) {
+ zfcp_erp_port_block(port, 0);
+ result = ZFCP_ERP_EXIT;
+ }
+ atomic_inc(&port->erp_counter);
+ if (atomic_read(&port->erp_counter) > ZFCP_MAX_ERPS)
+ zfcp_erp_port_failed(port, 22, NULL);
+ break;
}
- retval = ZFCP_ERP_CONTINUES;
- out:
- return retval;
+ if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
+ zfcp_erp_port_block(port, 0);
+ result = ZFCP_ERP_EXIT;
+ }
+ return result;
}
-/*
- * function:
- *
- * purpose:
- *
- * returns: ZFCP_ERP_CONTINUES - action continues (asynchronously)
- * ZFCP_ERP_FAILED - action finished unsuccessfully
- */
-static int
-zfcp_erp_unit_strategy_open(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_strategy_check_adapter(struct zfcp_adapter *adapter,
+ int result)
{
- int retval;
+ switch (result) {
+ case ZFCP_ERP_SUCCEEDED :
+ atomic_set(&adapter->erp_counter, 0);
+ zfcp_erp_adapter_unblock(adapter);
+ break;
- retval = zfcp_fsf_open_unit(erp_action);
- if (retval == -ENOMEM) {
- retval = ZFCP_ERP_NOMEM;
- goto out;
- }
- erp_action->step = ZFCP_ERP_STEP_UNIT_OPENING;
- if (retval != 0) {
- /* could not send 'open', fail */
- retval = ZFCP_ERP_FAILED;
- goto out;
+ case ZFCP_ERP_FAILED :
+ atomic_inc(&adapter->erp_counter);
+ if (atomic_read(&adapter->erp_counter) > ZFCP_MAX_ERPS)
+ zfcp_erp_adapter_failed(adapter, 23, NULL);
+ break;
}
- retval = ZFCP_ERP_CONTINUES;
- out:
- return retval;
-}
-void zfcp_erp_start_timer(struct zfcp_fsf_req *fsf_req)
-{
- BUG_ON(!fsf_req->erp_action);
- fsf_req->timer.function = zfcp_erp_timeout_handler;
- fsf_req->timer.data = (unsigned long) fsf_req->erp_action;
- fsf_req->timer.expires = jiffies + ZFCP_ERP_FSFREQ_TIMEOUT;
- add_timer(&fsf_req->timer);
+ if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
+ zfcp_erp_adapter_block(adapter, 0);
+ result = ZFCP_ERP_EXIT;
+ }
+ return result;
}
-/*
- * function:
- *
- * purpose: enqueue the specified error recovery action, if needed
- *
- * returns:
- */
-static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter,
- struct zfcp_port *port,
- struct zfcp_unit *unit, u8 id, void *ref)
+static int zfcp_erp_strategy_check_target(struct zfcp_erp_action *erp_action,
+ int result)
{
- int retval = 1, need = want;
- struct zfcp_erp_action *erp_action = NULL;
- u32 status = 0;
+ struct zfcp_adapter *adapter = erp_action->adapter;
+ struct zfcp_port *port = erp_action->port;
+ struct zfcp_unit *unit = erp_action->unit;
- /*
- * We need some rules here which check whether we really need
- * this action or whether we should just drop it.
- * E.g. if there is a unfinished 'Reopen Port' request then we drop a
- * 'Reopen Unit' request for an associated unit since we can't
- * satisfy this request now. A 'Reopen Port' action will trigger
- * 'Reopen Unit' actions when it completes.
- * Thus, there are only actions in the queue which can immediately be
- * executed. This makes the processing of the action queue more
- * efficient.
- */
-
- if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP,
- &adapter->status))
- return -EIO;
+ switch (erp_action->action) {
- /* check whether we really need this */
- switch (want) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
- if (atomic_test_mask
- (ZFCP_STATUS_COMMON_ERP_INUSE, &unit->status)) {
- goto out;
- }
- if (!atomic_test_mask
- (ZFCP_STATUS_COMMON_RUNNING, &port->status) ||
- atomic_test_mask
- (ZFCP_STATUS_COMMON_ERP_FAILED, &port->status)) {
- goto out;
- }
- if (!atomic_test_mask
- (ZFCP_STATUS_COMMON_UNBLOCKED, &port->status))
- need = ZFCP_ERP_ACTION_REOPEN_PORT;
- /* fall through !!! */
-
- case ZFCP_ERP_ACTION_REOPEN_PORT:
- if (atomic_test_mask
- (ZFCP_STATUS_COMMON_ERP_INUSE, &port->status)) {
- goto out;
- }
- /* fall through !!! */
+ result = zfcp_erp_strategy_check_unit(unit, result);
+ break;
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
- if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
- &port->status)) {
- if (port->erp_action.action !=
- ZFCP_ERP_ACTION_REOPEN_PORT_FORCED) {
- ZFCP_LOG_INFO("dropped erp action %i (port "
- "0x%016Lx, action in use: %i)\n",
- want, port->wwpn,
- port->erp_action.action);
- }
- goto out;
- }
- if (!atomic_test_mask
- (ZFCP_STATUS_COMMON_RUNNING, &adapter->status) ||
- atomic_test_mask
- (ZFCP_STATUS_COMMON_ERP_FAILED, &adapter->status)) {
- goto out;
- }
- if (!atomic_test_mask
- (ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status))
- need = ZFCP_ERP_ACTION_REOPEN_ADAPTER;
- /* fall through !!! */
+ case ZFCP_ERP_ACTION_REOPEN_PORT:
+ result = zfcp_erp_strategy_check_port(port, result);
+ break;
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
- if (atomic_test_mask
- (ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status)) {
- goto out;
- }
+ result = zfcp_erp_strategy_check_adapter(adapter, result);
break;
-
- default:
- ZFCP_LOG_NORMAL("bug: unknown erp action requested "
- "on adapter %s (action=%d)\n",
- zfcp_get_busid_by_adapter(adapter), want);
- goto out;
}
+ return result;
+}
- /* check whether we need something stronger first */
- if (need) {
- ZFCP_LOG_DEBUG("stronger erp action %d needed before "
- "erp action %d on adapter %s\n",
- need, want, zfcp_get_busid_by_adapter(adapter));
- }
+static int zfcp_erp_strat_change_det(atomic_t *target_status, u32 erp_status)
+{
+ int status = atomic_read(target_status);
- /* mark adapter to have some error recovery pending */
- atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_PENDING, &adapter->status);
+ if ((status & ZFCP_STATUS_COMMON_RUNNING) &&
+ (erp_status & ZFCP_STATUS_ERP_CLOSE_ONLY))
+ return 1; /* take it online */
- /* setup error recovery action */
- switch (need) {
+ if (!(status & ZFCP_STATUS_COMMON_RUNNING) &&
+ !(erp_status & ZFCP_STATUS_ERP_CLOSE_ONLY))
+ return 1; /* take it offline */
- case ZFCP_ERP_ACTION_REOPEN_UNIT:
- zfcp_unit_get(unit);
- atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &unit->status);
- erp_action = &unit->erp_action;
- if (!atomic_test_mask
- (ZFCP_STATUS_COMMON_RUNNING, &unit->status))
- status = ZFCP_STATUS_ERP_CLOSE_ONLY;
+ return 0;
+}
+
+static int zfcp_erp_strategy_statechange(struct zfcp_erp_action *act, int ret)
+{
+ int action = act->action;
+ struct zfcp_adapter *adapter = act->adapter;
+ struct zfcp_port *port = act->port;
+ struct zfcp_unit *unit = act->unit;
+ u32 erp_status = act->status;
+
+ switch (action) {
+ case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
+ if (zfcp_erp_strat_change_det(&adapter->status, erp_status)) {
+ _zfcp_erp_adapter_reopen(adapter,
+ ZFCP_STATUS_COMMON_ERP_FAILED,
+ 67, NULL);
+ return ZFCP_ERP_EXIT;
+ }
break;
- case ZFCP_ERP_ACTION_REOPEN_PORT:
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
- zfcp_port_get(port);
- zfcp_erp_action_dismiss_port(port);
- atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &port->status);
- erp_action = &port->erp_action;
- if (!atomic_test_mask
- (ZFCP_STATUS_COMMON_RUNNING, &port->status))
- status = ZFCP_STATUS_ERP_CLOSE_ONLY;
+ case ZFCP_ERP_ACTION_REOPEN_PORT:
+ if (zfcp_erp_strat_change_det(&port->status, erp_status)) {
+ _zfcp_erp_port_reopen(port,
+ ZFCP_STATUS_COMMON_ERP_FAILED,
+ 68, NULL);
+ return ZFCP_ERP_EXIT;
+ }
break;
- case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
- zfcp_adapter_get(adapter);
- zfcp_erp_action_dismiss_adapter(adapter);
- atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status);
- erp_action = &adapter->erp_action;
- if (!atomic_test_mask
- (ZFCP_STATUS_COMMON_RUNNING, &adapter->status))
- status = ZFCP_STATUS_ERP_CLOSE_ONLY;
+ case ZFCP_ERP_ACTION_REOPEN_UNIT:
+ if (zfcp_erp_strat_change_det(&unit->status, erp_status)) {
+ _zfcp_erp_unit_reopen(unit,
+ ZFCP_STATUS_COMMON_ERP_FAILED,
+ 69, NULL);
+ return ZFCP_ERP_EXIT;
+ }
break;
}
-
- memset(erp_action, 0, sizeof (struct zfcp_erp_action));
- erp_action->adapter = adapter;
- erp_action->port = port;
- erp_action->unit = unit;
- erp_action->action = need;
- erp_action->status = status;
-
- ++adapter->erp_total_count;
-
- /* finally put it into 'ready' queue and kick erp thread */
- list_add_tail(&erp_action->list, &adapter->erp_ready_head);
- up(&adapter->erp_ready_sem);
- zfcp_rec_dbf_event_thread(1, adapter, 0);
- retval = 0;
- out:
- zfcp_rec_dbf_event_trigger(id, ref, want, need, erp_action,
- adapter, port, unit);
- return retval;
+ return ret;
}
-static int
-zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action)
+static void zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action)
{
- int retval = 0;
struct zfcp_adapter *adapter = erp_action->adapter;
- --adapter->erp_total_count;
+ adapter->erp_total_count--;
if (erp_action->status & ZFCP_STATUS_ERP_LOWMEM) {
- --adapter->erp_low_mem_count;
+ adapter->erp_low_mem_count--;
erp_action->status &= ~ZFCP_STATUS_ERP_LOWMEM;
}
@@ -2919,141 +1224,458 @@ zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action)
atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
&erp_action->unit->status);
break;
+
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
case ZFCP_ERP_ACTION_REOPEN_PORT:
atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
&erp_action->port->status);
break;
+
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
&erp_action->adapter->status);
break;
- default:
- /* bug */
- break;
}
- return retval;
}
-/**
- * zfcp_erp_action_cleanup
- *
- * Register unit with scsi stack if appropriate and fix reference counts.
- * Note: Temporary units are not registered with scsi stack.
- */
-static void
-zfcp_erp_action_cleanup(int action, struct zfcp_adapter *adapter,
- struct zfcp_port *port, struct zfcp_unit *unit,
- int result)
+struct zfcp_erp_add_work {
+ struct zfcp_unit *unit;
+ struct work_struct work;
+};
+
+static void zfcp_erp_scsi_scan(struct work_struct *work)
{
- switch (action) {
+ struct zfcp_erp_add_work *p =
+ container_of(work, struct zfcp_erp_add_work, work);
+ struct zfcp_unit *unit = p->unit;
+ struct fc_rport *rport = unit->port->rport;
+ scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
+ unit->scsi_lun, 0);
+ atomic_clear_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status);
+ zfcp_unit_put(unit);
+ kfree(p);
+}
+
+static void zfcp_erp_schedule_work(struct zfcp_unit *unit)
+{
+ struct zfcp_erp_add_work *p;
+
+ p = kzalloc(sizeof(*p), GFP_KERNEL);
+ if (!p) {
+ dev_err(&unit->port->adapter->ccw_device->dev,
+ "Out of resources. Could not register unit "
+ "0x%016Lx on port 0x%016Lx with SCSI stack.\n",
+ unit->fcp_lun, unit->port->wwpn);
+ return;
+ }
+
+ zfcp_unit_get(unit);
+ atomic_set_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status);
+ INIT_WORK(&p->work, zfcp_erp_scsi_scan);
+ p->unit = unit;
+ schedule_work(&p->work);
+}
+
+static void zfcp_erp_rport_register(struct zfcp_port *port)
+{
+ struct fc_rport_identifiers ids;
+ ids.node_name = port->wwnn;
+ ids.port_name = port->wwpn;
+ ids.port_id = port->d_id;
+ ids.roles = FC_RPORT_ROLE_FCP_TARGET;
+ port->rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids);
+ if (!port->rport) {
+ dev_err(&port->adapter->ccw_device->dev,
+ "Failed registration of rport "
+ "0x%016Lx.\n", port->wwpn);
+ return;
+ }
+
+ scsi_target_unblock(&port->rport->dev);
+ port->rport->maxframe_size = port->maxframe_size;
+ port->rport->supported_classes = port->supported_classes;
+}
+
+static void zfcp_erp_rports_del(struct zfcp_adapter *adapter)
+{
+ struct zfcp_port *port;
+ list_for_each_entry(port, &adapter->port_list_head, list)
+ if (port->rport && !(atomic_read(&port->status) &
+ ZFCP_STATUS_PORT_WKA)) {
+ fc_remote_port_delete(port->rport);
+ port->rport = NULL;
+ }
+}
+
+static void zfcp_erp_action_cleanup(struct zfcp_erp_action *act, int result)
+{
+ struct zfcp_adapter *adapter = act->adapter;
+ struct zfcp_port *port = act->port;
+ struct zfcp_unit *unit = act->unit;
+
+ switch (act->action) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
- if ((result == ZFCP_ERP_SUCCEEDED)
- && (!atomic_test_mask(ZFCP_STATUS_UNIT_TEMPORARY,
- &unit->status))
- && !unit->device
- && port->rport) {
+ if ((result == ZFCP_ERP_SUCCEEDED) &&
+ !unit->device && port->rport) {
atomic_set_mask(ZFCP_STATUS_UNIT_REGISTERED,
&unit->status);
- if (atomic_test_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING,
- &unit->status) == 0)
+ if (!(atomic_read(&unit->status) &
+ ZFCP_STATUS_UNIT_SCSI_WORK_PENDING))
zfcp_erp_schedule_work(unit);
}
zfcp_unit_put(unit);
break;
+
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
case ZFCP_ERP_ACTION_REOPEN_PORT:
- if (atomic_test_mask(ZFCP_STATUS_PORT_NO_WWPN,
- &port->status)) {
+ if (atomic_read(&port->status) & ZFCP_STATUS_PORT_NO_WWPN) {
zfcp_port_put(port);
- break;
- }
-
- if ((result == ZFCP_ERP_SUCCEEDED)
- && !port->rport) {
- struct fc_rport_identifiers ids;
- ids.node_name = port->wwnn;
- ids.port_name = port->wwpn;
- ids.port_id = port->d_id;
- ids.roles = FC_RPORT_ROLE_FCP_TARGET;
- port->rport =
- fc_remote_port_add(adapter->scsi_host, 0, &ids);
- if (!port->rport)
- ZFCP_LOG_NORMAL("failed registration of rport"
- "(adapter %s, wwpn=0x%016Lx)\n",
- zfcp_get_busid_by_port(port),
- port->wwpn);
- else {
- scsi_target_unblock(&port->rport->dev);
- port->rport->maxframe_size = port->maxframe_size;
- port->rport->supported_classes =
- port->supported_classes;
- }
+ return;
}
+ if ((result == ZFCP_ERP_SUCCEEDED) && !port->rport)
+ zfcp_erp_rport_register(port);
if ((result != ZFCP_ERP_SUCCEEDED) && port->rport) {
fc_remote_port_delete(port->rport);
port->rport = NULL;
}
zfcp_port_put(port);
break;
+
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
- if (result != ZFCP_ERP_SUCCEEDED) {
- list_for_each_entry(port, &adapter->port_list_head, list)
- if (port->rport &&
- !atomic_test_mask(ZFCP_STATUS_PORT_WKA,
- &port->status)) {
- fc_remote_port_delete(port->rport);
- port->rport = NULL;
- }
- }
+ if (result != ZFCP_ERP_SUCCEEDED)
+ zfcp_erp_rports_del(adapter);
zfcp_adapter_put(adapter);
break;
- default:
- break;
}
}
+static int zfcp_erp_strategy_do_action(struct zfcp_erp_action *erp_action)
+{
+ switch (erp_action->action) {
+ case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
+ return zfcp_erp_adapter_strategy(erp_action);
+ case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
+ return zfcp_erp_port_forced_strategy(erp_action);
+ case ZFCP_ERP_ACTION_REOPEN_PORT:
+ return zfcp_erp_port_strategy(erp_action);
+ case ZFCP_ERP_ACTION_REOPEN_UNIT:
+ return zfcp_erp_unit_strategy(erp_action);
+ }
+ return ZFCP_ERP_FAILED;
+}
-static void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *adapter)
+static int zfcp_erp_strategy(struct zfcp_erp_action *erp_action)
{
- struct zfcp_port *port;
+ int retval;
+ struct zfcp_adapter *adapter = erp_action->adapter;
+ unsigned long flags;
- if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status))
- zfcp_erp_action_dismiss(&adapter->erp_action);
- else
- list_for_each_entry(port, &adapter->port_list_head, list)
- zfcp_erp_action_dismiss_port(port);
+ read_lock_irqsave(&zfcp_data.config_lock, flags);
+ write_lock(&adapter->erp_lock);
+
+ zfcp_erp_strategy_check_fsfreq(erp_action);
+
+ if (erp_action->status & ZFCP_STATUS_ERP_DISMISSED) {
+ zfcp_erp_action_dequeue(erp_action);
+ retval = ZFCP_ERP_DISMISSED;
+ goto unlock;
+ }
+
+ zfcp_erp_action_to_running(erp_action);
+
+ /* no lock to allow for blocking operations */
+ write_unlock(&adapter->erp_lock);
+ read_unlock_irqrestore(&zfcp_data.config_lock, flags);
+ retval = zfcp_erp_strategy_do_action(erp_action);
+ read_lock_irqsave(&zfcp_data.config_lock, flags);
+ write_lock(&adapter->erp_lock);
+
+ if (erp_action->status & ZFCP_STATUS_ERP_DISMISSED)
+ retval = ZFCP_ERP_CONTINUES;
+
+ switch (retval) {
+ case ZFCP_ERP_NOMEM:
+ if (!(erp_action->status & ZFCP_STATUS_ERP_LOWMEM)) {
+ ++adapter->erp_low_mem_count;
+ erp_action->status |= ZFCP_STATUS_ERP_LOWMEM;
+ }
+ if (adapter->erp_total_count == adapter->erp_low_mem_count)
+ _zfcp_erp_adapter_reopen(adapter, 0, 66, NULL);
+ else {
+ zfcp_erp_strategy_memwait(erp_action);
+ retval = ZFCP_ERP_CONTINUES;
+ }
+ goto unlock;
+
+ case ZFCP_ERP_CONTINUES:
+ if (erp_action->status & ZFCP_STATUS_ERP_LOWMEM) {
+ --adapter->erp_low_mem_count;
+ erp_action->status &= ~ZFCP_STATUS_ERP_LOWMEM;
+ }
+ goto unlock;
+ }
+
+ retval = zfcp_erp_strategy_check_target(erp_action, retval);
+ zfcp_erp_action_dequeue(erp_action);
+ retval = zfcp_erp_strategy_statechange(erp_action, retval);
+ if (retval == ZFCP_ERP_EXIT)
+ goto unlock;
+ zfcp_erp_strategy_followup_actions(erp_action);
+
+ unlock:
+ write_unlock(&adapter->erp_lock);
+ read_unlock_irqrestore(&zfcp_data.config_lock, flags);
+
+ if (retval != ZFCP_ERP_CONTINUES)
+ zfcp_erp_action_cleanup(erp_action, retval);
+
+ return retval;
}
-static void zfcp_erp_action_dismiss_port(struct zfcp_port *port)
+static int zfcp_erp_thread(void *data)
{
- struct zfcp_unit *unit;
+ struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
+ struct list_head *next;
+ struct zfcp_erp_action *act;
+ unsigned long flags;
- if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &port->status))
- zfcp_erp_action_dismiss(&port->erp_action);
+ daemonize("zfcperp%s", adapter->ccw_device->dev.bus_id);
+ /* Block all signals */
+ siginitsetinv(&current->blocked, 0);
+ atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);
+ wake_up(&adapter->erp_thread_wqh);
+
+ while (!(atomic_read(&adapter->status) &
+ ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL)) {
+ write_lock_irqsave(&adapter->erp_lock, flags);
+ next = adapter->erp_ready_head.next;
+ write_unlock_irqrestore(&adapter->erp_lock, flags);
+
+ if (next != &adapter->erp_ready_head) {
+ act = list_entry(next, struct zfcp_erp_action, list);
+
+ /* there is more to come after dismission, no notify */
+ if (zfcp_erp_strategy(act) != ZFCP_ERP_DISMISSED)
+ zfcp_erp_wakeup(adapter);
+ }
+
+ zfcp_rec_dbf_event_thread(4, adapter);
+ down_interruptible(&adapter->erp_ready_sem);
+ zfcp_rec_dbf_event_thread(5, adapter);
+ }
+
+ atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);
+ wake_up(&adapter->erp_thread_wqh);
+
+ return 0;
+}
+
+/**
+ * zfcp_erp_thread_setup - Start ERP thread for adapter
+ * @adapter: Adapter to start the ERP thread for
+ *
+ * Returns 0 on success or error code from kernel_thread()
+ */
+int zfcp_erp_thread_setup(struct zfcp_adapter *adapter)
+{
+ int retval;
+
+ atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);
+ retval = kernel_thread(zfcp_erp_thread, adapter, SIGCHLD);
+ if (retval < 0) {
+ dev_err(&adapter->ccw_device->dev,
+ "Creation of ERP thread failed.\n");
+ return retval;
+ }
+ wait_event(adapter->erp_thread_wqh,
+ atomic_read(&adapter->status) &
+ ZFCP_STATUS_ADAPTER_ERP_THREAD_UP);
+ return 0;
+}
+
+/**
+ * zfcp_erp_thread_kill - Stop ERP thread.
+ * @adapter: Adapter where the ERP thread should be stopped.
+ *
+ * The caller of this routine ensures that the specified adapter has
+ * been shut down and that this operation has been completed. Thus,
+ * there are no pending erp_actions which would need to be handled
+ * here.
+ */
+void zfcp_erp_thread_kill(struct zfcp_adapter *adapter)
+{
+ atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL, &adapter->status);
+ up(&adapter->erp_ready_sem);
+ zfcp_rec_dbf_event_thread_lock(2, adapter);
+
+ wait_event(adapter->erp_thread_wqh,
+ !(atomic_read(&adapter->status) &
+ ZFCP_STATUS_ADAPTER_ERP_THREAD_UP));
+
+ atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL,
+ &adapter->status);
+}
+
+/**
+ * zfcp_erp_adapter_failed - Set adapter status to failed.
+ * @adapter: Failed adapter.
+ * @id: Event id for debug trace.
+ * @ref: Reference for debug trace.
+ */
+void zfcp_erp_adapter_failed(struct zfcp_adapter *adapter, u8 id, void *ref)
+{
+ zfcp_erp_modify_adapter_status(adapter, id, ref,
+ ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
+ dev_err(&adapter->ccw_device->dev, "Adapter ERP failed.\n");
+}
+
+/**
+ * zfcp_erp_port_failed - Set port status to failed.
+ * @port: Failed port.
+ * @id: Event id for debug trace.
+ * @ref: Reference for debug trace.
+ */
+void zfcp_erp_port_failed(struct zfcp_port *port, u8 id, void *ref)
+{
+ zfcp_erp_modify_port_status(port, id, ref,
+ ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
+
+ if (atomic_read(&port->status) & ZFCP_STATUS_PORT_WKA)
+ dev_err(&port->adapter->ccw_device->dev,
+ "Port ERP failed for WKA port d_id=0x%06x.\n",
+ port->d_id);
else
- list_for_each_entry(unit, &port->unit_list_head, list)
- zfcp_erp_action_dismiss_unit(unit);
+ dev_err(&port->adapter->ccw_device->dev,
+ "Port ERP failed for port wwpn=0x%016Lx.\n",
+ port->wwpn);
}
-static void zfcp_erp_action_dismiss_unit(struct zfcp_unit *unit)
+/**
+ * zfcp_erp_unit_failed - Set unit status to failed.
+ * @unit: Failed unit.
+ * @id: Event id for debug trace.
+ * @ref: Reference for debug trace.
+ */
+void zfcp_erp_unit_failed(struct zfcp_unit *unit, u8 id, void *ref)
{
- if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &unit->status))
- zfcp_erp_action_dismiss(&unit->erp_action);
+ zfcp_erp_modify_unit_status(unit, id, ref,
+ ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
+
+ dev_err(&unit->port->adapter->ccw_device->dev,
+ "Unit ERP failed for unit 0x%016Lx on port 0x%016Lx.\n",
+ unit->fcp_lun, unit->port->wwpn);
}
-static void zfcp_erp_action_to_running(struct zfcp_erp_action *erp_action)
+/**
+ * zfcp_erp_wait - wait for completion of error recovery on an adapter
+ * @adapter: adapter for which to wait for completion of its error recovery
+ */
+void zfcp_erp_wait(struct zfcp_adapter *adapter)
{
- list_move(&erp_action->list, &erp_action->adapter->erp_running_head);
- zfcp_rec_dbf_event_action(145, erp_action);
+ wait_event(adapter->erp_done_wqh,
+ !(atomic_read(&adapter->status) &
+ ZFCP_STATUS_ADAPTER_ERP_PENDING));
+}
+
+/**
+ * zfcp_erp_modify_adapter_status - change adapter status bits
+ * @adapter: adapter to change the status
+ * @id: id for the debug trace
+ * @ref: reference for the debug trace
+ * @mask: status bits to change
+ * @set_or_clear: ZFCP_SET or ZFCP_CLEAR
+ *
+ * Changes in common status bits are propagated to attached ports and units.
+ */
+void zfcp_erp_modify_adapter_status(struct zfcp_adapter *adapter, u8 id,
+ void *ref, u32 mask, int set_or_clear)
+{
+ struct zfcp_port *port;
+ u32 common_mask = mask & ZFCP_COMMON_FLAGS;
+
+ if (set_or_clear == ZFCP_SET) {
+ if (status_change_set(mask, &adapter->status))
+ zfcp_rec_dbf_event_adapter(id, ref, adapter);
+ atomic_set_mask(mask, &adapter->status);
+ } else {
+ if (status_change_clear(mask, &adapter->status))
+ zfcp_rec_dbf_event_adapter(id, ref, adapter);
+ atomic_clear_mask(mask, &adapter->status);
+ if (mask & ZFCP_STATUS_COMMON_ERP_FAILED)
+ atomic_set(&adapter->erp_counter, 0);
+ }
+
+ if (common_mask)
+ list_for_each_entry(port, &adapter->port_list_head, list)
+ zfcp_erp_modify_port_status(port, id, ref, common_mask,
+ set_or_clear);
}
-static void zfcp_erp_action_to_ready(struct zfcp_erp_action *erp_action)
+/**
+ * zfcp_erp_modify_port_status - change port status bits
+ * @port: port to change the status bits
+ * @id: id for the debug trace
+ * @ref: reference for the debug trace
+ * @mask: status bits to change
+ * @set_or_clear: ZFCP_SET or ZFCP_CLEAR
+ *
+ * Changes in common status bits are propagated to attached units.
+ */
+void zfcp_erp_modify_port_status(struct zfcp_port *port, u8 id, void *ref,
+ u32 mask, int set_or_clear)
{
- list_move(&erp_action->list, &erp_action->adapter->erp_ready_head);
- zfcp_rec_dbf_event_action(146, erp_action);
+ struct zfcp_unit *unit;
+ u32 common_mask = mask & ZFCP_COMMON_FLAGS;
+
+ if (set_or_clear == ZFCP_SET) {
+ if (status_change_set(mask, &port->status))
+ zfcp_rec_dbf_event_port(id, ref, port);
+ atomic_set_mask(mask, &port->status);
+ } else {
+ if (status_change_clear(mask, &port->status))
+ zfcp_rec_dbf_event_port(id, ref, port);
+ atomic_clear_mask(mask, &port->status);
+ if (mask & ZFCP_STATUS_COMMON_ERP_FAILED)
+ atomic_set(&port->erp_counter, 0);
+ }
+
+ if (common_mask)
+ list_for_each_entry(unit, &port->unit_list_head, list)
+ zfcp_erp_modify_unit_status(unit, id, ref, common_mask,
+ set_or_clear);
}
+/**
+ * zfcp_erp_modify_unit_status - change unit status bits
+ * @unit: unit to change the status bits
+ * @id: id for the debug trace
+ * @ref: reference for the debug trace
+ * @mask: status bits to change
+ * @set_or_clear: ZFCP_SET or ZFCP_CLEAR
+ */
+void zfcp_erp_modify_unit_status(struct zfcp_unit *unit, u8 id, void *ref,
+ u32 mask, int set_or_clear)
+{
+ if (set_or_clear == ZFCP_SET) {
+ if (status_change_set(mask, &unit->status))
+ zfcp_rec_dbf_event_unit(id, ref, unit);
+ atomic_set_mask(mask, &unit->status);
+ } else {
+ if (status_change_clear(mask, &unit->status))
+ zfcp_rec_dbf_event_unit(id, ref, unit);
+ atomic_clear_mask(mask, &unit->status);
+ if (mask & ZFCP_STATUS_COMMON_ERP_FAILED) {
+ atomic_set(&unit->erp_counter, 0);
+ }
+ }
+}
+
+/**
+ * zfcp_erp_port_boxed - Mark port as "boxed" and start ERP
+ * @port: The "boxed" port.
+ * @id: The debug trace id.
+ * @id: Reference for the debug trace.
+ */
void zfcp_erp_port_boxed(struct zfcp_port *port, u8 id, void *ref)
{
unsigned long flags;
@@ -3065,6 +1687,12 @@ void zfcp_erp_port_boxed(struct zfcp_port *port, u8 id, void *ref)
zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
}
+/**
+ * zfcp_erp_unit_boxed - Mark unit as "boxed" and start ERP
+ * @port: The "boxed" unit.
+ * @id: The debug trace id.
+ * @id: Reference for the debug trace.
+ */
void zfcp_erp_unit_boxed(struct zfcp_unit *unit, u8 id, void *ref)
{
zfcp_erp_modify_unit_status(unit, id, ref,
@@ -3072,6 +1700,15 @@ void zfcp_erp_unit_boxed(struct zfcp_unit *unit, u8 id, void *ref)
zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
}
+/**
+ * zfcp_erp_port_access_denied - Adapter denied access to port.
+ * @port: port where access has been denied
+ * @id: id for debug trace
+ * @ref: reference for debug trace
+ *
+ * Since the adapter has denied access, stop using the port and the
+ * attached units.
+ */
void zfcp_erp_port_access_denied(struct zfcp_port *port, u8 id, void *ref)
{
unsigned long flags;
@@ -3083,6 +1720,14 @@ void zfcp_erp_port_access_denied(struct zfcp_port *port, u8 id, void *ref)
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
}
+/**
+ * zfcp_erp_unit_access_denied - Adapter denied access to unit.
+ * @unit: unit where access has been denied
+ * @id: id for debug trace
+ * @ref: reference for debug trace
+ *
+ * Since the adapter has denied access, stop using the unit.
+ */
void zfcp_erp_unit_access_denied(struct zfcp_unit *unit, u8 id, void *ref)
{
zfcp_erp_modify_unit_status(unit, id, ref,
@@ -3090,67 +1735,54 @@ void zfcp_erp_unit_access_denied(struct zfcp_unit *unit, u8 id, void *ref)
ZFCP_STATUS_COMMON_ACCESS_DENIED, ZFCP_SET);
}
-void zfcp_erp_adapter_access_changed(struct zfcp_adapter *adapter, u8 id,
- void *ref)
+static void zfcp_erp_unit_access_changed(struct zfcp_unit *unit, u8 id,
+ void *ref)
{
- struct zfcp_port *port;
- unsigned long flags;
-
- if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
+ int status = atomic_read(&unit->status);
+ if (!(status & (ZFCP_STATUS_COMMON_ACCESS_DENIED |
+ ZFCP_STATUS_COMMON_ACCESS_BOXED)))
return;
- read_lock_irqsave(&zfcp_data.config_lock, flags);
- if (adapter->nameserver_port)
- zfcp_erp_port_access_changed(adapter->nameserver_port, id, ref);
- list_for_each_entry(port, &adapter->port_list_head, list)
- if (port != adapter->nameserver_port)
- zfcp_erp_port_access_changed(port, id, ref);
- read_unlock_irqrestore(&zfcp_data.config_lock, flags);
+ zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
}
-void zfcp_erp_port_access_changed(struct zfcp_port *port, u8 id, void *ref)
+static void zfcp_erp_port_access_changed(struct zfcp_port *port, u8 id,
+ void *ref)
{
- struct zfcp_adapter *adapter = port->adapter;
struct zfcp_unit *unit;
+ int status = atomic_read(&port->status);
- if (!atomic_test_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED,
- &port->status) &&
- !atomic_test_mask(ZFCP_STATUS_COMMON_ACCESS_BOXED,
- &port->status)) {
- if (!atomic_test_mask(ZFCP_STATUS_PORT_WKA, &port->status))
+ if (!(status & (ZFCP_STATUS_COMMON_ACCESS_DENIED |
+ ZFCP_STATUS_COMMON_ACCESS_BOXED))) {
+ if (!(status & ZFCP_STATUS_PORT_WKA))
list_for_each_entry(unit, &port->unit_list_head, list)
zfcp_erp_unit_access_changed(unit, id, ref);
return;
}
- ZFCP_LOG_NORMAL("reopen of port 0x%016Lx on adapter %s "
- "(due to ACT update)\n",
- port->wwpn, zfcp_get_busid_by_adapter(adapter));
- if (zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref))
- ZFCP_LOG_NORMAL("failed reopen of port"
- "(adapter %s, wwpn=0x%016Lx)\n",
- zfcp_get_busid_by_adapter(adapter), port->wwpn);
+ zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
}
-void zfcp_erp_unit_access_changed(struct zfcp_unit *unit, u8 id, void *ref)
+/**
+ * zfcp_erp_adapter_access_changed - Process change in adapter ACT
+ * @adapter: Adapter where the Access Control Table (ACT) changed
+ * @id: Id for debug trace
+ * @ref: Reference for debug trace
+ */
+void zfcp_erp_adapter_access_changed(struct zfcp_adapter *adapter, u8 id,
+ void *ref)
{
- struct zfcp_adapter *adapter = unit->port->adapter;
+ struct zfcp_port *port;
+ unsigned long flags;
- if (!atomic_test_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED,
- &unit->status) &&
- !atomic_test_mask(ZFCP_STATUS_COMMON_ACCESS_BOXED,
- &unit->status))
+ if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
return;
- ZFCP_LOG_NORMAL("reopen of unit 0x%016Lx on port 0x%016Lx "
- " on adapter %s (due to ACT update)\n",
- unit->fcp_lun, unit->port->wwpn,
- zfcp_get_busid_by_adapter(adapter));
- if (zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref))
- ZFCP_LOG_NORMAL("failed reopen of unit (adapter %s, "
- "wwpn=0x%016Lx, fcp_lun=0x%016Lx)\n",
- zfcp_get_busid_by_adapter(adapter),
- unit->port->wwpn, unit->fcp_lun);
+ read_lock_irqsave(&zfcp_data.config_lock, flags);
+ if (adapter->nameserver_port)
+ zfcp_erp_port_access_changed(adapter->nameserver_port, id, ref);
+ list_for_each_entry(port, &adapter->port_list_head, list)
+ if (port != adapter->nameserver_port)
+ zfcp_erp_port_access_changed(port, id, ref);
+ read_unlock_irqrestore(&zfcp_data.config_lock, flags);
}
-
-#undef ZFCP_LOG_AREA
diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index 6abf178fda5..8065b2b224b 100644
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -1,22 +1,9 @@
/*
- * This file is part of the zfcp device driver for
- * FCP adapters for IBM System z9 and zSeries.
+ * zfcp device driver
*
- * (C) Copyright IBM Corp. 2002, 2006
+ * External function declarations.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Copyright IBM Corporation 2002, 2008
*/
#ifndef ZFCP_EXT_H
@@ -24,172 +11,51 @@
#include "zfcp_def.h"
-extern struct zfcp_data zfcp_data;
-
-/******************************** SYSFS *************************************/
-extern struct attribute_group *zfcp_driver_attr_groups[];
-extern int zfcp_sysfs_adapter_create_files(struct device *);
-extern void zfcp_sysfs_adapter_remove_files(struct device *);
-extern int zfcp_sysfs_port_create_files(struct device *, u32);
-extern void zfcp_sysfs_port_remove_files(struct device *, u32);
-extern int zfcp_sysfs_unit_create_files(struct device *);
-extern void zfcp_sysfs_unit_remove_files(struct device *);
-extern void zfcp_sysfs_port_release(struct device *);
-extern void zfcp_sysfs_unit_release(struct device *);
-
-/**************************** CONFIGURATION *********************************/
-extern struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *, fcp_lun_t);
-extern struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *, wwn_t);
-extern struct zfcp_port *zfcp_get_port_by_did(struct zfcp_adapter *, u32);
-struct zfcp_adapter *zfcp_get_adapter_by_busid(char *);
-extern struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *);
-extern int zfcp_adapter_debug_register(struct zfcp_adapter *);
-extern void zfcp_adapter_dequeue(struct zfcp_adapter *);
-extern void zfcp_adapter_debug_unregister(struct zfcp_adapter *);
-extern struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *, wwn_t,
- u32, u32);
-extern void zfcp_port_dequeue(struct zfcp_port *);
+/* zfcp_aux.c */
+extern struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *,
+ fcp_lun_t);
+extern struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *,
+ wwn_t);
+extern int zfcp_adapter_enqueue(struct ccw_device *);
+extern void zfcp_adapter_dequeue(struct zfcp_adapter *);
+extern struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *, wwn_t, u32,
+ u32);
+extern void zfcp_port_dequeue(struct zfcp_port *);
extern struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *, fcp_lun_t);
-extern void zfcp_unit_dequeue(struct zfcp_unit *);
-
-/******************************* S/390 IO ************************************/
-extern int zfcp_ccw_register(void);
-
-extern void zfcp_qdio_zero_sbals(struct qdio_buffer **, int, int);
-extern int zfcp_qdio_allocate(struct zfcp_adapter *);
-extern int zfcp_qdio_allocate_queues(struct zfcp_adapter *);
-extern void zfcp_qdio_free_queues(struct zfcp_adapter *);
-extern int zfcp_qdio_determine_pci(struct zfcp_qdio_queue *,
- struct zfcp_fsf_req *);
-
-extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_req
- (struct zfcp_fsf_req *, int, int);
-extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_curr
- (struct zfcp_fsf_req *);
-extern int zfcp_qdio_sbals_from_sg
- (struct zfcp_fsf_req *, unsigned long, struct scatterlist *, int, int);
-extern int zfcp_qdio_sbals_from_scsicmnd
- (struct zfcp_fsf_req *, unsigned long, struct scsi_cmnd *);
-
-
-/******************************** FSF ****************************************/
-extern int zfcp_fsf_open_port(struct zfcp_erp_action *);
-extern int zfcp_fsf_close_port(struct zfcp_erp_action *);
-extern int zfcp_fsf_close_physical_port(struct zfcp_erp_action *);
-
-extern int zfcp_fsf_open_unit(struct zfcp_erp_action *);
-extern int zfcp_fsf_close_unit(struct zfcp_erp_action *);
-
-extern int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *);
-extern int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *,
- struct fsf_qtcb_bottom_config *);
-extern int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *);
-extern int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *,
- struct fsf_qtcb_bottom_port *);
-extern int zfcp_fsf_control_file(struct zfcp_adapter *, struct zfcp_fsf_req **,
- u32, u32, struct zfcp_sg_list *);
-extern void zfcp_fsf_start_timer(struct zfcp_fsf_req *, unsigned long);
-extern void zfcp_erp_start_timer(struct zfcp_fsf_req *);
-extern void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *);
-extern int zfcp_fsf_status_read(struct zfcp_adapter *, int);
-extern int zfcp_fsf_req_create(struct zfcp_adapter *, u32, int, mempool_t *,
- unsigned long *, struct zfcp_fsf_req **);
-extern int zfcp_fsf_send_ct(struct zfcp_send_ct *, mempool_t *,
- struct zfcp_erp_action *);
-extern int zfcp_fsf_send_els(struct zfcp_send_els *);
-extern int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *,
- struct zfcp_unit *,
- struct scsi_cmnd *, int, int);
-extern int zfcp_fsf_req_complete(struct zfcp_fsf_req *);
-extern void zfcp_fsf_incoming_els(struct zfcp_fsf_req *);
-extern void zfcp_fsf_req_free(struct zfcp_fsf_req *);
-extern struct zfcp_fsf_req *zfcp_fsf_send_fcp_command_task_management(
- struct zfcp_adapter *, struct zfcp_unit *, u8, int);
-extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(
- unsigned long, struct zfcp_adapter *, struct zfcp_unit *, int);
-
-/******************************* FC/FCP **************************************/
-extern int zfcp_nameserver_enqueue(struct zfcp_adapter *);
-extern int zfcp_ns_gid_pn_request(struct zfcp_erp_action *);
-extern int zfcp_check_ct_response(struct ct_hdr *);
-extern int zfcp_handle_els_rjt(u32, struct zfcp_ls_rjt_par *);
-extern void zfcp_plogi_evaluate(struct zfcp_port *, struct fsf_plogi *);
-
-/******************************* SCSI ****************************************/
-extern int zfcp_adapter_scsi_register(struct zfcp_adapter *);
-extern void zfcp_adapter_scsi_unregister(struct zfcp_adapter *);
-extern void zfcp_set_fcp_dl(struct fcp_cmnd_iu *, fcp_dl_t);
-extern char *zfcp_get_fcp_rsp_info_ptr(struct fcp_rsp_iu *);
-extern void set_host_byte(int *, char);
-extern void set_driver_byte(int *, char);
-extern char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *);
-extern fcp_dl_t zfcp_get_fcp_dl(struct fcp_cmnd_iu *);
-
-extern int zfcp_scsi_command_async(struct zfcp_adapter *,struct zfcp_unit *,
- struct scsi_cmnd *, int);
-extern int zfcp_scsi_command_sync(struct zfcp_unit *, struct scsi_cmnd *, int);
-extern struct fc_function_template zfcp_transport_functions;
-
-/******************************** ERP ****************************************/
-extern void zfcp_erp_modify_adapter_status(struct zfcp_adapter *, u8, void *,
- u32, int);
-extern int zfcp_erp_adapter_reopen(struct zfcp_adapter *, int, u8, void *);
-extern int zfcp_erp_adapter_shutdown(struct zfcp_adapter *, int, u8, void *);
-extern void zfcp_erp_adapter_failed(struct zfcp_adapter *, u8, void *);
-
-extern void zfcp_erp_modify_port_status(struct zfcp_port *, u8, void *, u32,
- int);
-extern int zfcp_erp_port_reopen(struct zfcp_port *, int, u8, void *);
-extern int zfcp_erp_port_shutdown(struct zfcp_port *, int, u8, void *);
-extern int zfcp_erp_port_forced_reopen(struct zfcp_port *, int, u8, void *);
-extern void zfcp_erp_port_failed(struct zfcp_port *, u8, void *);
-extern int zfcp_erp_port_reopen_all(struct zfcp_adapter *, int, u8, void *);
-
-extern void zfcp_erp_modify_unit_status(struct zfcp_unit *, u8, void *, u32,
- int);
-extern int zfcp_erp_unit_reopen(struct zfcp_unit *, int, u8, void *);
-extern int zfcp_erp_unit_shutdown(struct zfcp_unit *, int, u8, void *);
-extern void zfcp_erp_unit_failed(struct zfcp_unit *, u8, void *);
-
-extern int zfcp_erp_thread_setup(struct zfcp_adapter *);
-extern int zfcp_erp_thread_kill(struct zfcp_adapter *);
-extern int zfcp_erp_wait(struct zfcp_adapter *);
-extern void zfcp_erp_async_handler(struct zfcp_erp_action *, unsigned long);
-
-extern int zfcp_test_link(struct zfcp_port *);
-
-extern void zfcp_erp_port_boxed(struct zfcp_port *, u8 id, void *ref);
-extern void zfcp_erp_unit_boxed(struct zfcp_unit *, u8 id, void *ref);
-extern void zfcp_erp_port_access_denied(struct zfcp_port *, u8 id, void *ref);
-extern void zfcp_erp_unit_access_denied(struct zfcp_unit *, u8 id, void *ref);
-extern void zfcp_erp_adapter_access_changed(struct zfcp_adapter *, u8, void *);
-extern void zfcp_erp_port_access_changed(struct zfcp_port *, u8, void *);
-extern void zfcp_erp_unit_access_changed(struct zfcp_unit *, u8, void *);
-
-/******************************** AUX ****************************************/
-extern void zfcp_rec_dbf_event_thread(u8 id, struct zfcp_adapter *adapter,
- int lock);
-extern void zfcp_rec_dbf_event_adapter(u8 id, void *ref, struct zfcp_adapter *);
-extern void zfcp_rec_dbf_event_port(u8 id, void *ref, struct zfcp_port *port);
-extern void zfcp_rec_dbf_event_unit(u8 id, void *ref, struct zfcp_unit *unit);
-extern void zfcp_rec_dbf_event_trigger(u8 id, void *ref, u8 want, u8 need,
- void *action, struct zfcp_adapter *,
+extern void zfcp_unit_dequeue(struct zfcp_unit *);
+extern int zfcp_reqlist_isempty(struct zfcp_adapter *);
+extern void zfcp_sg_free_table(struct scatterlist *, int);
+extern int zfcp_sg_setup_table(struct scatterlist *, int);
+
+/* zfcp_ccw.c */
+extern int zfcp_ccw_register(void);
+
+/* zfcp_cfdc.c */
+extern struct miscdevice zfcp_cfdc_misc;
+
+/* zfcp_dbf.c */
+extern int zfcp_adapter_debug_register(struct zfcp_adapter *);
+extern void zfcp_adapter_debug_unregister(struct zfcp_adapter *);
+extern void zfcp_rec_dbf_event_thread(u8, struct zfcp_adapter *);
+extern void zfcp_rec_dbf_event_thread_lock(u8, struct zfcp_adapter *);
+extern void zfcp_rec_dbf_event_adapter(u8, void *, struct zfcp_adapter *);
+extern void zfcp_rec_dbf_event_port(u8, void *, struct zfcp_port *);
+extern void zfcp_rec_dbf_event_unit(u8, void *, struct zfcp_unit *);
+extern void zfcp_rec_dbf_event_trigger(u8, void *, u8, u8, void *,
+ struct zfcp_adapter *,
struct zfcp_port *, struct zfcp_unit *);
-extern void zfcp_rec_dbf_event_action(u8 id, struct zfcp_erp_action *);
-
+extern void zfcp_rec_dbf_event_action(u8, struct zfcp_erp_action *);
extern void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *);
extern void zfcp_hba_dbf_event_fsf_unsol(const char *, struct zfcp_adapter *,
struct fsf_status_read_buffer *);
extern void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *,
unsigned int, unsigned int, unsigned int,
int, int);
-
extern void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *);
extern void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *);
extern void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *);
extern void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *);
extern void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *);
-
extern void zfcp_scsi_dbf_event_result(const char *, int, struct zfcp_adapter *,
struct scsi_cmnd *,
struct zfcp_fsf_req *);
@@ -198,6 +64,101 @@ extern void zfcp_scsi_dbf_event_abort(const char *, struct zfcp_adapter *,
unsigned long);
extern void zfcp_scsi_dbf_event_devreset(const char *, u8, struct zfcp_unit *,
struct scsi_cmnd *);
-extern int zfcp_reqlist_isempty(struct zfcp_adapter *);
+
+/* zfcp_erp.c */
+extern void zfcp_erp_modify_adapter_status(struct zfcp_adapter *, u8, void *,
+ u32, int);
+extern void zfcp_erp_adapter_reopen(struct zfcp_adapter *, int, u8, void *);
+extern void zfcp_erp_adapter_shutdown(struct zfcp_adapter *, int, u8, void *);
+extern void zfcp_erp_adapter_failed(struct zfcp_adapter *, u8, void *);
+extern void zfcp_erp_modify_port_status(struct zfcp_port *, u8, void *, u32,
+ int);
+extern int zfcp_erp_port_reopen(struct zfcp_port *, int, u8, void *);
+extern void zfcp_erp_port_shutdown(struct zfcp_port *, int, u8, void *);
+extern void zfcp_erp_port_forced_reopen(struct zfcp_port *, int, u8, void *);
+extern void zfcp_erp_port_failed(struct zfcp_port *, u8, void *);
+extern void zfcp_erp_modify_unit_status(struct zfcp_unit *, u8, void *, u32,
+ int);
+extern void zfcp_erp_unit_reopen(struct zfcp_unit *, int, u8, void *);
+extern void zfcp_erp_unit_shutdown(struct zfcp_unit *, int, u8, void *);
+extern void zfcp_erp_unit_failed(struct zfcp_unit *, u8, void *);
+extern int zfcp_erp_thread_setup(struct zfcp_adapter *);
+extern void zfcp_erp_thread_kill(struct zfcp_adapter *);
+extern void zfcp_erp_wait(struct zfcp_adapter *);
+extern void zfcp_erp_notify(struct zfcp_erp_action *, unsigned long);
+extern void zfcp_erp_port_boxed(struct zfcp_port *, u8, void *);
+extern void zfcp_erp_unit_boxed(struct zfcp_unit *, u8, void *);
+extern void zfcp_erp_port_access_denied(struct zfcp_port *, u8, void *);
+extern void zfcp_erp_unit_access_denied(struct zfcp_unit *, u8, void *);
+extern void zfcp_erp_adapter_access_changed(struct zfcp_adapter *, u8, void *);
+extern void zfcp_erp_timeout_handler(unsigned long);
+
+/* zfcp_fc.c */
+extern int zfcp_scan_ports(struct zfcp_adapter *);
+extern void _zfcp_scan_ports_later(struct work_struct *);
+extern void zfcp_fc_incoming_els(struct zfcp_fsf_req *);
+extern int zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *);
+extern void zfcp_fc_plogi_evaluate(struct zfcp_port *, struct fsf_plogi *);
+extern void zfcp_test_link(struct zfcp_port *);
+
+/* zfcp_fsf.c */
+extern int zfcp_fsf_open_port(struct zfcp_erp_action *);
+extern int zfcp_fsf_close_port(struct zfcp_erp_action *);
+extern int zfcp_fsf_close_physical_port(struct zfcp_erp_action *);
+extern int zfcp_fsf_open_unit(struct zfcp_erp_action *);
+extern int zfcp_fsf_close_unit(struct zfcp_erp_action *);
+extern int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *);
+extern int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *,
+ struct fsf_qtcb_bottom_config *);
+extern int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *);
+extern int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *,
+ struct fsf_qtcb_bottom_port *);
+extern struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *,
+ struct zfcp_fsf_cfdc *);
+extern void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *);
+extern int zfcp_fsf_status_read(struct zfcp_adapter *);
+extern int zfcp_status_read_refill(struct zfcp_adapter *adapter);
+extern int zfcp_fsf_send_ct(struct zfcp_send_ct *, mempool_t *,
+ struct zfcp_erp_action *);
+extern int zfcp_fsf_send_els(struct zfcp_send_els *);
+extern int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *,
+ struct zfcp_unit *,
+ struct scsi_cmnd *, int, int);
+extern void zfcp_fsf_req_complete(struct zfcp_fsf_req *);
+extern void zfcp_fsf_req_free(struct zfcp_fsf_req *);
+extern struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *,
+ struct zfcp_unit *, u8, int);
+extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long,
+ struct zfcp_adapter *,
+ struct zfcp_unit *, int);
+
+/* zfcp_qdio.c */
+extern int zfcp_qdio_allocate(struct zfcp_adapter *);
+extern void zfcp_qdio_free(struct zfcp_adapter *);
+extern int zfcp_qdio_send(struct zfcp_fsf_req *);
+extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_req(
+ struct zfcp_fsf_req *);
+extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_curr(
+ struct zfcp_fsf_req *);
+extern int zfcp_qdio_sbals_from_sg(struct zfcp_fsf_req *, unsigned long,
+ struct scatterlist *, int);
+extern int zfcp_qdio_open(struct zfcp_adapter *);
+extern void zfcp_qdio_close(struct zfcp_adapter *);
+
+/* zfcp_scsi.c */
+extern struct zfcp_data zfcp_data;
+extern int zfcp_adapter_scsi_register(struct zfcp_adapter *);
+extern void zfcp_adapter_scsi_unregister(struct zfcp_adapter *);
+extern void zfcp_set_fcp_dl(struct fcp_cmnd_iu *, fcp_dl_t);
+extern char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *);
+extern struct fc_function_template zfcp_transport_functions;
+
+/* zfcp_sysfs.c */
+extern struct attribute_group zfcp_sysfs_unit_attrs;
+extern struct attribute_group zfcp_sysfs_adapter_attrs;
+extern struct attribute_group zfcp_sysfs_ns_port_attrs;
+extern struct attribute_group zfcp_sysfs_port_attrs;
+extern struct device_attribute *zfcp_sysfs_sdev_attrs[];
+extern struct device_attribute *zfcp_sysfs_shost_attrs[];
#endif /* ZFCP_EXT_H */
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c
new file mode 100644
index 00000000000..e984469bb98
--- /dev/null
+++ b/drivers/s390/scsi/zfcp_fc.c
@@ -0,0 +1,567 @@
+/*
+ * zfcp device driver
+ *
+ * Fibre Channel related functions for the zfcp device driver.
+ *
+ * Copyright IBM Corporation 2008
+ */
+
+#include "zfcp_ext.h"
+
+struct ct_iu_gpn_ft_req {
+ struct ct_hdr header;
+ u8 flags;
+ u8 domain_id_scope;
+ u8 area_id_scope;
+ u8 fc4_type;
+} __attribute__ ((packed));
+
+struct gpn_ft_resp_acc {
+ u8 control;
+ u8 port_id[3];
+ u8 reserved[4];
+ u64 wwpn;
+} __attribute__ ((packed));
+
+#define ZFCP_GPN_FT_ENTRIES ((PAGE_SIZE - sizeof(struct ct_hdr)) \
+ / sizeof(struct gpn_ft_resp_acc))
+#define ZFCP_GPN_FT_BUFFERS 4
+#define ZFCP_GPN_FT_MAX_ENTRIES ZFCP_GPN_FT_BUFFERS * (ZFCP_GPN_FT_ENTRIES + 1)
+
+struct ct_iu_gpn_ft_resp {
+ struct ct_hdr header;
+ struct gpn_ft_resp_acc accept[ZFCP_GPN_FT_ENTRIES];
+} __attribute__ ((packed));
+
+struct zfcp_gpn_ft {
+ struct zfcp_send_ct ct;
+ struct scatterlist sg_req;
+ struct scatterlist sg_resp[ZFCP_GPN_FT_BUFFERS];
+};
+
+static struct zfcp_port *zfcp_get_port_by_did(struct zfcp_adapter *adapter,
+ u32 d_id)
+{
+ struct zfcp_port *port;
+
+ list_for_each_entry(port, &adapter->port_list_head, list)
+ if ((port->d_id == d_id) &&
+ !atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status))
+ return port;
+ return NULL;
+}
+
+static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range,
+ struct fcp_rscn_element *elem)
+{
+ unsigned long flags;
+ struct zfcp_port *port;
+
+ read_lock_irqsave(&zfcp_data.config_lock, flags);
+ list_for_each_entry(port, &fsf_req->adapter->port_list_head, list) {
+ if (atomic_test_mask(ZFCP_STATUS_PORT_WKA, &port->status))
+ continue;
+ /* FIXME: ZFCP_STATUS_PORT_DID_DID check is racy */
+ if (!atomic_test_mask(ZFCP_STATUS_PORT_DID_DID, &port->status))
+ /* Try to connect to unused ports anyway. */
+ zfcp_erp_port_reopen(port,
+ ZFCP_STATUS_COMMON_ERP_FAILED,
+ 82, fsf_req);
+ else if ((port->d_id & range) == (elem->nport_did & range))
+ /* Check connection status for connected ports */
+ zfcp_test_link(port);
+ }
+ read_unlock_irqrestore(&zfcp_data.config_lock, flags);
+}
+
+static void zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req)
+{
+ struct fsf_status_read_buffer *status_buffer = (void *)fsf_req->data;
+ struct fcp_rscn_head *fcp_rscn_head;
+ struct fcp_rscn_element *fcp_rscn_element;
+ u16 i;
+ u16 no_entries;
+ u32 range_mask;
+
+ fcp_rscn_head = (struct fcp_rscn_head *) status_buffer->payload.data;
+ fcp_rscn_element = (struct fcp_rscn_element *) fcp_rscn_head;
+
+ /* see FC-FS */
+ no_entries = fcp_rscn_head->payload_len /
+ sizeof(struct fcp_rscn_element);
+
+ for (i = 1; i < no_entries; i++) {
+ /* skip head and start with 1st element */
+ fcp_rscn_element++;
+ switch (fcp_rscn_element->addr_format) {
+ case ZFCP_PORT_ADDRESS:
+ range_mask = ZFCP_PORTS_RANGE_PORT;
+ break;
+ case ZFCP_AREA_ADDRESS:
+ range_mask = ZFCP_PORTS_RANGE_AREA;
+ break;
+ case ZFCP_DOMAIN_ADDRESS:
+ range_mask = ZFCP_PORTS_RANGE_DOMAIN;
+ break;
+ case ZFCP_FABRIC_ADDRESS:
+ range_mask = ZFCP_PORTS_RANGE_FABRIC;
+ break;
+ default:
+ continue;
+ }
+ _zfcp_fc_incoming_rscn(fsf_req, range_mask, fcp_rscn_element);
+ }
+ schedule_work(&fsf_req->adapter->scan_work);
+}
+
+static void zfcp_fc_incoming_wwpn(struct zfcp_fsf_req *req, wwn_t wwpn)
+{
+ struct zfcp_adapter *adapter = req->adapter;
+ struct zfcp_port *port;
+ unsigned long flags;
+
+ read_lock_irqsave(&zfcp_data.config_lock, flags);
+ list_for_each_entry(port, &adapter->port_list_head, list)
+ if (port->wwpn == wwpn)
+ break;
+ read_unlock_irqrestore(&zfcp_data.config_lock, flags);
+
+ if (port && (port->wwpn == wwpn))
+ zfcp_erp_port_forced_reopen(port, 0, 83, req);
+}
+
+static void zfcp_fc_incoming_plogi(struct zfcp_fsf_req *req)
+{
+ struct fsf_status_read_buffer *status_buffer =
+ (struct fsf_status_read_buffer *)req->data;
+ struct fsf_plogi *els_plogi =
+ (struct fsf_plogi *) status_buffer->payload.data;
+
+ zfcp_fc_incoming_wwpn(req, els_plogi->serv_param.wwpn);
+}
+
+static void zfcp_fc_incoming_logo(struct zfcp_fsf_req *req)
+{
+ struct fsf_status_read_buffer *status_buffer =
+ (struct fsf_status_read_buffer *)req->data;
+ struct fcp_logo *els_logo =
+ (struct fcp_logo *) status_buffer->payload.data;
+
+ zfcp_fc_incoming_wwpn(req, els_logo->nport_wwpn);
+}
+
+/**
+ * zfcp_fc_incoming_els - handle incoming ELS
+ * @fsf_req - request which contains incoming ELS
+ */
+void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req)
+{
+ struct fsf_status_read_buffer *status_buffer =
+ (struct fsf_status_read_buffer *) fsf_req->data;
+ unsigned int els_type = status_buffer->payload.data[0];
+
+ zfcp_san_dbf_event_incoming_els(fsf_req);
+ if (els_type == LS_PLOGI)
+ zfcp_fc_incoming_plogi(fsf_req);
+ else if (els_type == LS_LOGO)
+ zfcp_fc_incoming_logo(fsf_req);
+ else if (els_type == LS_RSCN)
+ zfcp_fc_incoming_rscn(fsf_req);
+}
+
+static void zfcp_ns_gid_pn_handler(unsigned long data)
+{
+ struct zfcp_gid_pn_data *gid_pn = (struct zfcp_gid_pn_data *) data;
+ struct zfcp_send_ct *ct = &gid_pn->ct;
+ struct ct_iu_gid_pn_req *ct_iu_req = sg_virt(ct->req);
+ struct ct_iu_gid_pn_resp *ct_iu_resp = sg_virt(ct->resp);
+ struct zfcp_port *port = gid_pn->port;
+
+ if (ct->status)
+ goto out;
+ if (ct_iu_resp->header.cmd_rsp_code != ZFCP_CT_ACCEPT) {
+ atomic_set_mask(ZFCP_STATUS_PORT_INVALID_WWPN, &port->status);
+ goto out;
+ }
+ /* paranoia */
+ if (ct_iu_req->wwpn != port->wwpn)
+ goto out;
+ /* looks like a valid d_id */
+ port->d_id = ct_iu_resp->d_id & ZFCP_DID_MASK;
+ atomic_set_mask(ZFCP_STATUS_PORT_DID_DID, &port->status);
+out:
+ mempool_free(gid_pn, port->adapter->pool.data_gid_pn);
+}
+
+/**
+ * zfcp_fc_ns_gid_pn_request - initiate GID_PN nameserver request
+ * @erp_action: pointer to zfcp_erp_action where GID_PN request is needed
+ * return: -ENOMEM on error, 0 otherwise
+ */
+int zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *erp_action)
+{
+ int ret;
+ struct zfcp_gid_pn_data *gid_pn;
+ struct zfcp_adapter *adapter = erp_action->adapter;
+
+ gid_pn = mempool_alloc(adapter->pool.data_gid_pn, GFP_ATOMIC);
+ if (!gid_pn)
+ return -ENOMEM;
+
+ memset(gid_pn, 0, sizeof(*gid_pn));
+
+ /* setup parameters for send generic command */
+ gid_pn->port = erp_action->port;
+ gid_pn->ct.port = adapter->nameserver_port;
+ gid_pn->ct.handler = zfcp_ns_gid_pn_handler;
+ gid_pn->ct.handler_data = (unsigned long) gid_pn;
+ gid_pn->ct.timeout = ZFCP_NS_GID_PN_TIMEOUT;
+ gid_pn->ct.req = &gid_pn->req;
+ gid_pn->ct.resp = &gid_pn->resp;
+ gid_pn->ct.req_count = 1;
+ gid_pn->ct.resp_count = 1;
+ sg_init_one(&gid_pn->req, &gid_pn->ct_iu_req,
+ sizeof(struct ct_iu_gid_pn_req));
+ sg_init_one(&gid_pn->resp, &gid_pn->ct_iu_resp,
+ sizeof(struct ct_iu_gid_pn_resp));
+
+ /* setup nameserver request */
+ gid_pn->ct_iu_req.header.revision = ZFCP_CT_REVISION;
+ gid_pn->ct_iu_req.header.gs_type = ZFCP_CT_DIRECTORY_SERVICE;
+ gid_pn->ct_iu_req.header.gs_subtype = ZFCP_CT_NAME_SERVER;
+ gid_pn->ct_iu_req.header.options = ZFCP_CT_SYNCHRONOUS;
+ gid_pn->ct_iu_req.header.cmd_rsp_code = ZFCP_CT_GID_PN;
+ gid_pn->ct_iu_req.header.max_res_size = ZFCP_CT_MAX_SIZE;
+ gid_pn->ct_iu_req.wwpn = erp_action->port->wwpn;
+
+ ret = zfcp_fsf_send_ct(&gid_pn->ct, adapter->pool.fsf_req_erp,
+ erp_action);
+ if (ret)
+ mempool_free(gid_pn, adapter->pool.data_gid_pn);
+ return ret;
+}
+
+/**
+ * zfcp_fc_plogi_evaluate - evaluate PLOGI playload
+ * @port: zfcp_port structure
+ * @plogi: plogi payload
+ *
+ * Evaluate PLOGI playload and copy important fields into zfcp_port structure
+ */
+void zfcp_fc_plogi_evaluate(struct zfcp_port *port, struct fsf_plogi *plogi)
+{
+ port->maxframe_size = plogi->serv_param.common_serv_param[7] |
+ ((plogi->serv_param.common_serv_param[6] & 0x0F) << 8);
+ if (plogi->serv_param.class1_serv_param[0] & 0x80)
+ port->supported_classes |= FC_COS_CLASS1;
+ if (plogi->serv_param.class2_serv_param[0] & 0x80)
+ port->supported_classes |= FC_COS_CLASS2;
+ if (plogi->serv_param.class3_serv_param[0] & 0x80)
+ port->supported_classes |= FC_COS_CLASS3;
+ if (plogi->serv_param.class4_serv_param[0] & 0x80)
+ port->supported_classes |= FC_COS_CLASS4;
+}
+
+struct zfcp_els_adisc {
+ struct zfcp_send_els els;
+ struct scatterlist req;
+ struct scatterlist resp;
+ struct zfcp_ls_adisc ls_adisc;
+ struct zfcp_ls_adisc_acc ls_adisc_acc;
+};
+
+static void zfcp_fc_adisc_handler(unsigned long data)
+{
+ struct zfcp_els_adisc *adisc = (struct zfcp_els_adisc *) data;
+ struct zfcp_port *port = adisc->els.port;
+ struct zfcp_ls_adisc_acc *ls_adisc = &adisc->ls_adisc_acc;
+
+ if (adisc->els.status) {
+ /* request rejected or timed out */
+ zfcp_erp_port_forced_reopen(port, 0, 63, NULL);
+ goto out;
+ }
+
+ if (!port->wwnn)
+ port->wwnn = ls_adisc->wwnn;
+
+ if (port->wwpn != ls_adisc->wwpn)
+ zfcp_erp_port_reopen(port, 0, 64, NULL);
+
+ out:
+ zfcp_port_put(port);
+ kfree(adisc);
+}
+
+static int zfcp_fc_adisc(struct zfcp_port *port)
+{
+ struct zfcp_els_adisc *adisc;
+ struct zfcp_adapter *adapter = port->adapter;
+
+ adisc = kzalloc(sizeof(struct zfcp_els_adisc), GFP_ATOMIC);
+ if (!adisc)
+ return -ENOMEM;
+
+ adisc->els.req = &adisc->req;
+ adisc->els.resp = &adisc->resp;
+ sg_init_one(adisc->els.req, &adisc->ls_adisc,
+ sizeof(struct zfcp_ls_adisc));
+ sg_init_one(adisc->els.resp, &adisc->ls_adisc_acc,
+ sizeof(struct zfcp_ls_adisc_acc));
+
+ adisc->els.req_count = 1;
+ adisc->els.resp_count = 1;
+ adisc->els.adapter = adapter;
+ adisc->els.port = port;
+ adisc->els.d_id = port->d_id;
+ adisc->els.handler = zfcp_fc_adisc_handler;
+ adisc->els.handler_data = (unsigned long) adisc;
+ adisc->els.ls_code = adisc->ls_adisc.code = ZFCP_LS_ADISC;
+
+ /* acc. to FC-FS, hard_nport_id in ADISC should not be set for ports
+ without FC-AL-2 capability, so we don't set it */
+ adisc->ls_adisc.wwpn = fc_host_port_name(adapter->scsi_host);
+ adisc->ls_adisc.wwnn = fc_host_node_name(adapter->scsi_host);
+ adisc->ls_adisc.nport_id = fc_host_port_id(adapter->scsi_host);
+
+ return zfcp_fsf_send_els(&adisc->els);
+}
+
+/**
+ * zfcp_test_link - lightweight link test procedure
+ * @port: port to be tested
+ *
+ * Test status of a link to a remote port using the ELS command ADISC.
+ * If there is a problem with the remote port, error recovery steps
+ * will be triggered.
+ */
+void zfcp_test_link(struct zfcp_port *port)
+{
+ int retval;
+
+ zfcp_port_get(port);
+ retval = zfcp_fc_adisc(port);
+ if (retval == 0 || retval == -EBUSY)
+ return;
+
+ /* send of ADISC was not possible */
+ zfcp_port_put(port);
+ zfcp_erp_port_forced_reopen(port, 0, 65, NULL);
+}
+
+static int zfcp_scan_get_nameserver(struct zfcp_adapter *adapter)
+{
+ int ret;
+
+ if (!adapter->nameserver_port)
+ return -EINTR;
+
+ if (!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
+ &adapter->nameserver_port->status)) {
+ ret = zfcp_erp_port_reopen(adapter->nameserver_port, 0, 148,
+ NULL);
+ if (ret)
+ return ret;
+ zfcp_erp_wait(adapter);
+ zfcp_port_put(adapter->nameserver_port);
+ }
+ return !atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
+ &adapter->nameserver_port->status);
+}
+
+static void zfcp_gpn_ft_handler(unsigned long _done)
+{
+ complete((struct completion *)_done);
+}
+
+static void zfcp_free_sg_env(struct zfcp_gpn_ft *gpn_ft)
+{
+ struct scatterlist *sg = &gpn_ft->sg_req;
+
+ kfree(sg_virt(sg)); /* free request buffer */
+ zfcp_sg_free_table(gpn_ft->sg_resp, ZFCP_GPN_FT_BUFFERS);
+
+ kfree(gpn_ft);
+}
+
+static struct zfcp_gpn_ft *zfcp_alloc_sg_env(void)
+{
+ struct zfcp_gpn_ft *gpn_ft;
+ struct ct_iu_gpn_ft_req *req;
+
+ gpn_ft = kzalloc(sizeof(*gpn_ft), GFP_KERNEL);
+ if (!gpn_ft)
+ return NULL;
+
+ req = kzalloc(sizeof(struct ct_iu_gpn_ft_req), GFP_KERNEL);
+ if (!req) {
+ kfree(gpn_ft);
+ gpn_ft = NULL;
+ goto out;
+ }
+ sg_init_one(&gpn_ft->sg_req, req, sizeof(*req));
+
+ if (zfcp_sg_setup_table(gpn_ft->sg_resp, ZFCP_GPN_FT_BUFFERS)) {
+ zfcp_free_sg_env(gpn_ft);
+ gpn_ft = NULL;
+ }
+out:
+ return gpn_ft;
+}
+
+
+static int zfcp_scan_issue_gpn_ft(struct zfcp_gpn_ft *gpn_ft,
+ struct zfcp_adapter *adapter)
+{
+ struct zfcp_send_ct *ct = &gpn_ft->ct;
+ struct ct_iu_gpn_ft_req *req = sg_virt(&gpn_ft->sg_req);
+ struct completion done;
+ int ret;
+
+ /* prepare CT IU for GPN_FT */
+ req->header.revision = ZFCP_CT_REVISION;
+ req->header.gs_type = ZFCP_CT_DIRECTORY_SERVICE;
+ req->header.gs_subtype = ZFCP_CT_NAME_SERVER;
+ req->header.options = ZFCP_CT_SYNCHRONOUS;
+ req->header.cmd_rsp_code = ZFCP_CT_GPN_FT;
+ req->header.max_res_size = (sizeof(struct gpn_ft_resp_acc) *
+ (ZFCP_GPN_FT_MAX_ENTRIES - 1)) >> 2;
+ req->flags = 0;
+ req->domain_id_scope = 0;
+ req->area_id_scope = 0;
+ req->fc4_type = ZFCP_CT_SCSI_FCP;
+
+ /* prepare zfcp_send_ct */
+ ct->port = adapter->nameserver_port;
+ ct->handler = zfcp_gpn_ft_handler;
+ ct->handler_data = (unsigned long)&done;
+ ct->timeout = 10;
+ ct->req = &gpn_ft->sg_req;
+ ct->resp = gpn_ft->sg_resp;
+ ct->req_count = 1;
+ ct->resp_count = ZFCP_GPN_FT_BUFFERS;
+
+ init_completion(&done);
+ ret = zfcp_fsf_send_ct(ct, NULL, NULL);
+ if (!ret)
+ wait_for_completion(&done);
+ return ret;
+}
+
+static void zfcp_validate_port(struct zfcp_port *port)
+{
+ struct zfcp_adapter *adapter = port->adapter;
+
+ atomic_clear_mask(ZFCP_STATUS_COMMON_NOESC, &port->status);
+
+ if (port == adapter->nameserver_port)
+ return;
+ if ((port->supported_classes != 0) || (port->units != 0)) {
+ zfcp_port_put(port);
+ return;
+ }
+ zfcp_erp_port_shutdown(port, 0, 151, NULL);
+ zfcp_erp_wait(adapter);
+ zfcp_port_put(port);
+ zfcp_port_dequeue(port);
+}
+
+static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft)
+{
+ struct zfcp_send_ct *ct = &gpn_ft->ct;
+ struct scatterlist *sg = gpn_ft->sg_resp;
+ struct ct_hdr *hdr = sg_virt(sg);
+ struct gpn_ft_resp_acc *acc = sg_virt(sg);
+ struct zfcp_adapter *adapter = ct->port->adapter;
+ struct zfcp_port *port, *tmp;
+ u32 d_id;
+ int ret = 0, x;
+
+ if (ct->status)
+ return -EIO;
+
+ if (hdr->cmd_rsp_code != ZFCP_CT_ACCEPT) {
+ if (hdr->reason_code == ZFCP_CT_UNABLE_TO_PERFORM_CMD)
+ return -EAGAIN; /* might be a temporary condition */
+ return -EIO;
+ }
+
+ if (hdr->max_res_size)
+ return -E2BIG;
+
+ down(&zfcp_data.config_sema);
+
+ /* first entry is the header */
+ for (x = 1; x < ZFCP_GPN_FT_MAX_ENTRIES; x++) {
+ if (x % (ZFCP_GPN_FT_ENTRIES + 1))
+ acc++;
+ else
+ acc = sg_virt(++sg);
+
+ d_id = acc->port_id[0] << 16 | acc->port_id[1] << 8 |
+ acc->port_id[2];
+
+ /* skip the adapter's port and known remote ports */
+ if (acc->wwpn == fc_host_port_name(adapter->scsi_host) ||
+ zfcp_get_port_by_did(adapter, d_id))
+ continue;
+
+ port = zfcp_port_enqueue(adapter, acc->wwpn,
+ ZFCP_STATUS_PORT_DID_DID |
+ ZFCP_STATUS_COMMON_NOESC, d_id);
+ if (IS_ERR(port))
+ ret = PTR_ERR(port);
+ else
+ zfcp_erp_port_reopen(port, 0, 149, NULL);
+ if (acc->control & 0x80) /* last entry */
+ break;
+ }
+
+ zfcp_erp_wait(adapter);
+ list_for_each_entry_safe(port, tmp, &adapter->port_list_head, list)
+ zfcp_validate_port(port);
+ up(&zfcp_data.config_sema);
+ return ret;
+}
+
+/**
+ * zfcp_scan_ports - scan remote ports and attach new ports
+ * @adapter: pointer to struct zfcp_adapter
+ */
+int zfcp_scan_ports(struct zfcp_adapter *adapter)
+{
+ int ret, i;
+ struct zfcp_gpn_ft *gpn_ft;
+
+ zfcp_erp_wait(adapter); /* wait until adapter is finished with ERP */
+ if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT)
+ return 0;
+
+ ret = zfcp_scan_get_nameserver(adapter);
+ if (ret)
+ return ret;
+
+ gpn_ft = zfcp_alloc_sg_env();
+ if (!gpn_ft)
+ return -ENOMEM;
+
+ for (i = 0; i < 3; i++) {
+ ret = zfcp_scan_issue_gpn_ft(gpn_ft, adapter);
+ if (!ret) {
+ ret = zfcp_scan_eval_gpn_ft(gpn_ft);
+ if (ret == -EAGAIN)
+ ssleep(1);
+ else
+ break;
+ }
+ }
+ zfcp_free_sg_env(gpn_ft);
+
+ return ret;
+}
+
+
+void _zfcp_scan_ports_later(struct work_struct *work)
+{
+ zfcp_scan_ports(container_of(work, struct zfcp_adapter, scan_work));
+}
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index b2ea4ea051f..19c1ca91387 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -1,54 +1,37 @@
/*
- * This file is part of the zfcp device driver for
- * FCP adapters for IBM System z9 and zSeries.
+ * zfcp device driver
*
- * (C) Copyright IBM Corp. 2002, 2006
+ * Implementation of FSF commands.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Copyright IBM Corporation 2002, 2008
*/
#include "zfcp_ext.h"
-static int zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *);
-static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_open_port_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_close_port_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_send_fcp_command_task_management_handler(
- struct zfcp_fsf_req *);
-static int zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_status_read_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_control_file_handler(struct zfcp_fsf_req *);
-static inline int zfcp_fsf_req_sbal_check(
- unsigned long *, struct zfcp_qdio_queue *, int);
-static inline int zfcp_use_one_sbal(
- struct scatterlist *, int, struct scatterlist *, int);
-static struct zfcp_fsf_req *zfcp_fsf_req_alloc(mempool_t *, int);
-static int zfcp_fsf_req_send(struct zfcp_fsf_req *);
-static int zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *);
-static int zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *);
-static int zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *);
-static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *, u8,
- struct fsf_link_down_info *);
-static int zfcp_fsf_req_dispatch(struct zfcp_fsf_req *);
+static void zfcp_fsf_request_timeout_handler(unsigned long data)
+{
+ struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
+ zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 62,
+ NULL);
+}
+
+static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req,
+ unsigned long timeout)
+{
+ fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
+ fsf_req->timer.data = (unsigned long) fsf_req->adapter;
+ fsf_req->timer.expires = jiffies + timeout;
+ add_timer(&fsf_req->timer);
+}
+
+static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req)
+{
+ BUG_ON(!fsf_req->erp_action);
+ fsf_req->timer.function = zfcp_erp_timeout_handler;
+ fsf_req->timer.data = (unsigned long) fsf_req->erp_action;
+ fsf_req->timer.expires = jiffies + 30 * HZ;
+ add_timer(&fsf_req->timer);
+}
/* association between FSF command and FSF QTCB type */
static u32 fsf_qtcb_type[] = {
@@ -67,96 +50,77 @@ static u32 fsf_qtcb_type[] = {
[FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
};
-static const char zfcp_act_subtable_type[5][8] = {
+static const char *zfcp_act_subtable_type[] = {
"unknown", "OS", "WWPN", "DID", "LUN"
};
-/****************************************************************/
-/*************** FSF related Functions *************************/
-/****************************************************************/
-
-#define ZFCP_LOG_AREA ZFCP_LOG_AREA_FSF
-
-/*
- * function: zfcp_fsf_req_alloc
- *
- * purpose: Obtains an fsf_req and potentially a qtcb (for all but
- * unsolicited requests) via helper functions
- * Does some initial fsf request set-up.
- *
- * returns: pointer to allocated fsf_req if successfull
- * NULL otherwise
- *
- * locks: none
- *
- */
-static struct zfcp_fsf_req *
-zfcp_fsf_req_alloc(mempool_t *pool, int req_flags)
+static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table)
{
- size_t size;
- void *ptr;
- struct zfcp_fsf_req *fsf_req = NULL;
+ u16 subtable = table >> 16;
+ u16 rule = table & 0xffff;
- if (req_flags & ZFCP_REQ_NO_QTCB)
- size = sizeof(struct zfcp_fsf_req);
- else
- size = sizeof(struct zfcp_fsf_req_qtcb);
-
- if (likely(pool))
- ptr = mempool_alloc(pool, GFP_ATOMIC);
- else {
- if (req_flags & ZFCP_REQ_NO_QTCB)
- ptr = kmalloc(size, GFP_ATOMIC);
- else
- ptr = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache,
- GFP_ATOMIC);
- }
-
- if (unlikely(!ptr))
- goto out;
-
- memset(ptr, 0, size);
+ if (subtable && subtable < ARRAY_SIZE(zfcp_act_subtable_type))
+ dev_warn(&adapter->ccw_device->dev,
+ "Access denied in subtable %s, rule %d.\n",
+ zfcp_act_subtable_type[subtable], rule);
+}
- if (req_flags & ZFCP_REQ_NO_QTCB) {
- fsf_req = (struct zfcp_fsf_req *) ptr;
- } else {
- fsf_req = &((struct zfcp_fsf_req_qtcb *) ptr)->fsf_req;
- fsf_req->qtcb = &((struct zfcp_fsf_req_qtcb *) ptr)->qtcb;
- }
+static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req,
+ struct zfcp_port *port)
+{
+ struct fsf_qtcb_header *header = &req->qtcb->header;
+ dev_warn(&req->adapter->ccw_device->dev,
+ "Access denied, cannot send command to port 0x%016Lx.\n",
+ port->wwpn);
+ zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]);
+ zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]);
+ zfcp_erp_port_access_denied(port, 55, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+}
- fsf_req->pool = pool;
+static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req,
+ struct zfcp_unit *unit)
+{
+ struct fsf_qtcb_header *header = &req->qtcb->header;
+ dev_warn(&req->adapter->ccw_device->dev,
+ "Access denied for unit 0x%016Lx on port 0x%016Lx.\n",
+ unit->fcp_lun, unit->port->wwpn);
+ zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]);
+ zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]);
+ zfcp_erp_unit_access_denied(unit, 59, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+}
- out:
- return fsf_req;
+static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
+{
+ dev_err(&req->adapter->ccw_device->dev,
+ "Required FC class not supported by adapter, "
+ "shutting down adapter.\n");
+ zfcp_erp_adapter_shutdown(req->adapter, 0, 123, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
-/*
- * function: zfcp_fsf_req_free
- *
- * purpose: Frees the memory of an fsf_req (and potentially a qtcb) or
- * returns it into the pool via helper functions.
- *
- * returns: sod all
- *
- * locks: none
+/**
+ * zfcp_fsf_req_free - free memory used by fsf request
+ * @fsf_req: pointer to struct zfcp_fsf_req
*/
-void
-zfcp_fsf_req_free(struct zfcp_fsf_req *fsf_req)
+void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
{
- if (likely(fsf_req->pool)) {
- mempool_free(fsf_req, fsf_req->pool);
+ if (likely(req->pool)) {
+ mempool_free(req, req->pool);
return;
}
- if (fsf_req->qtcb) {
- kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, fsf_req);
+ if (req->qtcb) {
+ kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, req);
return;
}
-
- kfree(fsf_req);
}
-/*
+/**
+ * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
+ * @adapter: pointer to struct zfcp_adapter
+ *
* Never ever call this without shutting down the adapter first.
* Otherwise the adapter would continue using and corrupting s390 storage.
* Included BUG_ON() call to ensure this is done.
@@ -164,2353 +128,1359 @@ zfcp_fsf_req_free(struct zfcp_fsf_req *fsf_req)
*/
void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
{
- struct zfcp_fsf_req *fsf_req, *tmp;
+ struct zfcp_fsf_req *req, *tmp;
unsigned long flags;
LIST_HEAD(remove_queue);
unsigned int i;
- BUG_ON(atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status));
+ BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
spin_lock_irqsave(&adapter->req_list_lock, flags);
- atomic_set(&adapter->reqs_active, 0);
for (i = 0; i < REQUEST_LIST_SIZE; i++)
list_splice_init(&adapter->req_list[i], &remove_queue);
spin_unlock_irqrestore(&adapter->req_list_lock, flags);
- list_for_each_entry_safe(fsf_req, tmp, &remove_queue, list) {
- list_del(&fsf_req->list);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
- zfcp_fsf_req_complete(fsf_req);
+ list_for_each_entry_safe(req, tmp, &remove_queue, list) {
+ list_del(&req->list);
+ req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
+ zfcp_fsf_req_complete(req);
}
}
-/*
- * function: zfcp_fsf_req_complete
- *
- * purpose: Updates active counts and timers for openfcp-reqs
- * May cleanup request after req_eval returns
- *
- * returns: 0 - success
- * !0 - failure
- *
- * context:
- */
-int
-zfcp_fsf_req_complete(struct zfcp_fsf_req *fsf_req)
+static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
{
- int retval = 0;
- int cleanup;
-
- if (unlikely(fsf_req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
- ZFCP_LOG_DEBUG("Status read response received\n");
- /*
- * Note: all cleanup handling is done in the callchain of
- * the function call-chain below.
- */
- zfcp_fsf_status_read_handler(fsf_req);
- goto out;
- } else {
- del_timer(&fsf_req->timer);
- zfcp_fsf_protstatus_eval(fsf_req);
- }
-
- /*
- * fsf_req may be deleted due to waking up functions, so
- * cleanup is saved here and used later
- */
- if (likely(fsf_req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
- cleanup = 1;
- else
- cleanup = 0;
-
- fsf_req->status |= ZFCP_STATUS_FSFREQ_COMPLETED;
+ struct fsf_status_read_buffer *sr_buf = req->data;
+ struct zfcp_adapter *adapter = req->adapter;
+ struct zfcp_port *port;
+ int d_id = sr_buf->d_id & ZFCP_DID_MASK;
+ unsigned long flags;
- /* cleanup request if requested by initiator */
- if (likely(cleanup)) {
- ZFCP_LOG_TRACE("removing FSF request %p\n", fsf_req);
- /*
- * lock must not be held here since it will be
- * grabed by the called routine, too
- */
- zfcp_fsf_req_free(fsf_req);
- } else {
- /* notify initiator waiting for the requests completion */
- ZFCP_LOG_TRACE("waking initiator of FSF request %p\n",fsf_req);
- /*
- * FIXME: Race! We must not access fsf_req here as it might have been
- * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED
- * flag. It's an improbable case. But, we have the same paranoia for
- * the cleanup flag already.
- * Might better be handled using complete()?
- * (setting the flag and doing wakeup ought to be atomic
- * with regard to checking the flag as long as waitqueue is
- * part of the to be released structure)
- */
- wake_up(&fsf_req->completion_wq);
- }
+ read_lock_irqsave(&zfcp_data.config_lock, flags);
+ list_for_each_entry(port, &adapter->port_list_head, list)
+ if (port->d_id == d_id) {
+ read_unlock_irqrestore(&zfcp_data.config_lock, flags);
+ switch (sr_buf->status_subtype) {
+ case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT:
+ zfcp_erp_port_reopen(port, 0, 101, req);
+ break;
+ case FSF_STATUS_READ_SUB_ERROR_PORT:
+ zfcp_erp_port_shutdown(port, 0, 122, req);
+ break;
+ }
+ return;
+ }
+ read_unlock_irqrestore(&zfcp_data.config_lock, flags);
+}
- out:
- return retval;
+static void zfcp_fsf_bit_error_threshold(struct zfcp_fsf_req *req)
+{
+ struct zfcp_adapter *adapter = req->adapter;
+ struct fsf_status_read_buffer *sr_buf = req->data;
+ struct fsf_bit_error_payload *err = &sr_buf->payload.bit_error;
+
+ dev_warn(&adapter->ccw_device->dev,
+ "Warning: bit error threshold data "
+ "received for the adapter: "
+ "link failures = %i, loss of sync errors = %i, "
+ "loss of signal errors = %i, "
+ "primitive sequence errors = %i, "
+ "invalid transmission word errors = %i, "
+ "CRC errors = %i).\n",
+ err->link_failure_error_count,
+ err->loss_of_sync_error_count,
+ err->loss_of_signal_error_count,
+ err->primitive_sequence_error_count,
+ err->invalid_transmission_word_error_count,
+ err->crc_error_count);
+ dev_warn(&adapter->ccw_device->dev,
+ "Additional bit error threshold data of the adapter: "
+ "primitive sequence event time-outs = %i, "
+ "elastic buffer overrun errors = %i, "
+ "advertised receive buffer-to-buffer credit = %i, "
+ "current receice buffer-to-buffer credit = %i, "
+ "advertised transmit buffer-to-buffer credit = %i, "
+ "current transmit buffer-to-buffer credit = %i).\n",
+ err->primitive_sequence_event_timeout_count,
+ err->elastic_buffer_overrun_error_count,
+ err->advertised_receive_b2b_credit,
+ err->current_receive_b2b_credit,
+ err->advertised_transmit_b2b_credit,
+ err->current_transmit_b2b_credit);
}
-/*
- * function: zfcp_fsf_protstatus_eval
- *
- * purpose: evaluates the QTCB of the finished FSF request
- * and initiates appropriate actions
- * (usually calling FSF command specific handlers)
- *
- * returns:
- *
- * context:
- *
- * locks:
- */
-static int
-zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *fsf_req)
+static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, u8 id,
+ struct fsf_link_down_info *link_down)
{
- int retval = 0;
- struct zfcp_adapter *adapter = fsf_req->adapter;
- struct fsf_qtcb *qtcb = fsf_req->qtcb;
- union fsf_prot_status_qual *prot_status_qual =
- &qtcb->prefix.prot_status_qual;
-
- zfcp_hba_dbf_event_fsf_response(fsf_req);
-
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
- ZFCP_LOG_DEBUG("fsf_req 0x%lx has been dismissed\n",
- (unsigned long) fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
- ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */
- goto skip_protstatus;
- }
+ struct zfcp_adapter *adapter = req->adapter;
- /* evaluate FSF Protocol Status */
- switch (qtcb->prefix.prot_status) {
+ if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
+ return;
- case FSF_PROT_GOOD:
- case FSF_PROT_FSF_STATUS_PRESENTED:
- break;
+ atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
- case FSF_PROT_QTCB_VERSION_ERROR:
- ZFCP_LOG_NORMAL("error: The adapter %s contains "
- "microcode of version 0x%x, the device driver "
- "only supports 0x%x. Aborting.\n",
- zfcp_get_busid_by_adapter(adapter),
- prot_status_qual->version_error.fsf_version,
- ZFCP_QTCB_VERSION);
- zfcp_erp_adapter_shutdown(adapter, 0, 117, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
+ if (!link_down)
+ goto out;
- case FSF_PROT_SEQ_NUMB_ERROR:
- ZFCP_LOG_NORMAL("bug: Sequence number mismatch between "
- "driver (0x%x) and adapter %s (0x%x). "
- "Restarting all operations on this adapter.\n",
- qtcb->prefix.req_seq_no,
- zfcp_get_busid_by_adapter(adapter),
- prot_status_qual->sequence_error.exp_req_seq_no);
- zfcp_erp_adapter_reopen(adapter, 0, 98, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY;
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ switch (link_down->error_code) {
+ case FSF_PSQ_LINK_NO_LIGHT:
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The local link is down: no light detected.\n");
break;
-
- case FSF_PROT_UNSUPP_QTCB_TYPE:
- ZFCP_LOG_NORMAL("error: Packet header type used by the "
- "device driver is incompatible with "
- "that used on adapter %s. "
- "Stopping all operations on this adapter.\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_erp_adapter_shutdown(adapter, 0, 118, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ case FSF_PSQ_LINK_WRAP_PLUG:
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The local link is down: wrap plug detected.\n");
break;
-
- case FSF_PROT_HOST_CONNECTION_INITIALIZING:
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
- &(adapter->status));
+ case FSF_PSQ_LINK_NO_FCP:
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The local link is down: "
+ "adjacent node on link does not support FCP.\n");
break;
-
- case FSF_PROT_DUPLICATE_REQUEST_ID:
- ZFCP_LOG_NORMAL("bug: The request identifier 0x%Lx "
- "to the adapter %s is ambiguous. "
- "Stopping all operations on this adapter.\n",
- *(unsigned long long*)
- (&qtcb->bottom.support.req_handle),
- zfcp_get_busid_by_adapter(adapter));
- zfcp_erp_adapter_shutdown(adapter, 0, 78, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ case FSF_PSQ_LINK_FIRMWARE_UPDATE:
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The local link is down: "
+ "firmware update in progress.\n");
break;
-
- case FSF_PROT_LINK_DOWN:
- zfcp_fsf_link_down_info_eval(fsf_req, 37,
- &prot_status_qual->link_down_info);
- /* FIXME: reopening adapter now? better wait for link up */
- zfcp_erp_adapter_reopen(adapter, 0, 79, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ case FSF_PSQ_LINK_INVALID_WWPN:
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The local link is down: "
+ "duplicate or invalid WWPN detected.\n");
break;
-
- case FSF_PROT_REEST_QUEUE:
- ZFCP_LOG_NORMAL("The local link to adapter with "
- "%s was re-plugged. "
- "Re-starting operations on this adapter.\n",
- zfcp_get_busid_by_adapter(adapter));
- /* All ports should be marked as ready to run again */
- zfcp_erp_modify_adapter_status(adapter, 28, NULL,
- ZFCP_STATUS_COMMON_RUNNING,
- ZFCP_SET);
- zfcp_erp_adapter_reopen(adapter,
- ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
- | ZFCP_STATUS_COMMON_ERP_FAILED,
- 99, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The local link is down: "
+ "no support for NPIV by Fabric.\n");
break;
-
- case FSF_PROT_ERROR_STATE:
- ZFCP_LOG_NORMAL("error: The adapter %s "
- "has entered the error state. "
- "Restarting all operations on this "
- "adapter.\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_erp_adapter_reopen(adapter, 0, 100, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY;
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ case FSF_PSQ_LINK_NO_FCP_RESOURCES:
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The local link is down: "
+ "out of resource in FCP daughtercard.\n");
+ break;
+ case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The local link is down: "
+ "out of resource in Fabric.\n");
+ break;
+ case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The local link is down: "
+ "unable to login to Fabric.\n");
+ break;
+ case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
+ dev_warn(&req->adapter->ccw_device->dev,
+ "WWPN assignment file corrupted on adapter.\n");
+ break;
+ case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
+ dev_warn(&req->adapter->ccw_device->dev,
+ "Mode table corrupted on adapter.\n");
+ break;
+ case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
+ dev_warn(&req->adapter->ccw_device->dev,
+ "No WWPN for assignment table on adapter.\n");
break;
-
default:
- ZFCP_LOG_NORMAL("bug: Transfer protocol status information "
- "provided by the adapter %s "
- "is not compatible with the device driver. "
- "Stopping all operations on this adapter. "
- "(debug info 0x%x).\n",
- zfcp_get_busid_by_adapter(adapter),
- qtcb->prefix.prot_status);
- zfcp_erp_adapter_shutdown(adapter, 0, 119, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The local link to adapter is down.\n");
}
+out:
+ zfcp_erp_adapter_failed(adapter, id, req);
+}
- skip_protstatus:
- /*
- * always call specific handlers to give them a chance to do
- * something meaningful even in error cases
- */
- zfcp_fsf_fsfstatus_eval(fsf_req);
- return retval;
+static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
+{
+ struct zfcp_adapter *adapter = req->adapter;
+ struct fsf_status_read_buffer *sr_buf = req->data;
+ struct fsf_link_down_info *ldi =
+ (struct fsf_link_down_info *) &sr_buf->payload;
+
+ switch (sr_buf->status_subtype) {
+ case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
+ dev_warn(&adapter->ccw_device->dev,
+ "Physical link is down.\n");
+ zfcp_fsf_link_down_info_eval(req, 38, ldi);
+ break;
+ case FSF_STATUS_READ_SUB_FDISC_FAILED:
+ dev_warn(&adapter->ccw_device->dev,
+ "Local link is down "
+ "due to failed FDISC login.\n");
+ zfcp_fsf_link_down_info_eval(req, 39, ldi);
+ break;
+ case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
+ dev_warn(&adapter->ccw_device->dev,
+ "Local link is down "
+ "due to firmware update on adapter.\n");
+ zfcp_fsf_link_down_info_eval(req, 40, NULL);
+ };
}
-/*
- * function: zfcp_fsf_fsfstatus_eval
- *
- * purpose: evaluates FSF status of completed FSF request
- * and acts accordingly
- *
- * returns:
- */
-static int
-zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *fsf_req)
+static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
{
- int retval = 0;
+ struct zfcp_adapter *adapter = req->adapter;
+ struct fsf_status_read_buffer *sr_buf = req->data;
- if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
- goto skip_fsfstatus;
+ if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
+ zfcp_hba_dbf_event_fsf_unsol("dism", adapter, sr_buf);
+ mempool_free(sr_buf, adapter->pool.data_status_read);
+ zfcp_fsf_req_free(req);
+ return;
}
- /* evaluate FSF Status */
- switch (fsf_req->qtcb->header.fsf_status) {
- case FSF_UNKNOWN_COMMAND:
- ZFCP_LOG_NORMAL("bug: Command issued by the device driver is "
- "not known by the adapter %s "
- "Stopping all operations on this adapter. "
- "(debug info 0x%x).\n",
- zfcp_get_busid_by_adapter(fsf_req->adapter),
- fsf_req->qtcb->header.fsf_command);
- zfcp_erp_adapter_shutdown(fsf_req->adapter, 0, 120, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
+ zfcp_hba_dbf_event_fsf_unsol("read", adapter, sr_buf);
- case FSF_FCP_RSP_AVAILABLE:
- ZFCP_LOG_DEBUG("FCP Sense data will be presented to the "
- "SCSI stack.\n");
+ switch (sr_buf->status_type) {
+ case FSF_STATUS_READ_PORT_CLOSED:
+ zfcp_fsf_status_read_port_closed(req);
break;
-
- case FSF_ADAPTER_STATUS_AVAILABLE:
- zfcp_fsf_fsfstatus_qual_eval(fsf_req);
+ case FSF_STATUS_READ_INCOMING_ELS:
+ zfcp_fc_incoming_els(req);
+ break;
+ case FSF_STATUS_READ_SENSE_DATA_AVAIL:
+ break;
+ case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
+ zfcp_fsf_bit_error_threshold(req);
+ break;
+ case FSF_STATUS_READ_LINK_DOWN:
+ zfcp_fsf_status_read_link_down(req);
+ break;
+ case FSF_STATUS_READ_LINK_UP:
+ dev_info(&adapter->ccw_device->dev,
+ "Local link was replugged.\n");
+ /* All ports should be marked as ready to run again */
+ zfcp_erp_modify_adapter_status(adapter, 30, NULL,
+ ZFCP_STATUS_COMMON_RUNNING,
+ ZFCP_SET);
+ zfcp_erp_adapter_reopen(adapter,
+ ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
+ ZFCP_STATUS_COMMON_ERP_FAILED,
+ 102, req);
+ break;
+ case FSF_STATUS_READ_NOTIFICATION_LOST:
+ if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
+ zfcp_erp_adapter_access_changed(adapter, 135, req);
+ if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
+ schedule_work(&adapter->scan_work);
+ break;
+ case FSF_STATUS_READ_CFDC_UPDATED:
+ zfcp_erp_adapter_access_changed(adapter, 136, req);
+ break;
+ case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
+ adapter->adapter_features = sr_buf->payload.word[0];
break;
}
- skip_fsfstatus:
- /*
- * always call specific handlers to give them a chance to do
- * something meaningful even in error cases
- */
- zfcp_fsf_req_dispatch(fsf_req);
+ mempool_free(sr_buf, adapter->pool.data_status_read);
+ zfcp_fsf_req_free(req);
- return retval;
+ atomic_inc(&adapter->stat_miss);
+ schedule_work(&adapter->stat_work);
}
-/*
- * function: zfcp_fsf_fsfstatus_qual_eval
- *
- * purpose: evaluates FSF status-qualifier of completed FSF request
- * and acts accordingly
- *
- * returns:
- */
-static int
-zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *fsf_req)
+static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
{
- int retval = 0;
-
- switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) {
+ switch (req->qtcb->header.fsf_status_qual.word[0]) {
case FSF_SQ_FCP_RSP_AVAILABLE:
- break;
- case FSF_SQ_RETRY_IF_POSSIBLE:
- /* The SCSI-stack may now issue retries or escalate */
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
- case FSF_SQ_COMMAND_ABORTED:
- /* Carry the aborted state on to upper layer */
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTED;
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
- case FSF_SQ_NO_RECOM:
- ZFCP_LOG_NORMAL("bug: No recommendation could be given for a "
- "problem on the adapter %s "
- "Stopping all operations on this adapter. ",
- zfcp_get_busid_by_adapter(fsf_req->adapter));
- zfcp_erp_adapter_shutdown(fsf_req->adapter, 0, 121, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
- case FSF_SQ_ULP_PROGRAMMING_ERROR:
- ZFCP_LOG_NORMAL("error: not enough SBALs for data transfer "
- "(adapter %s)\n",
- zfcp_get_busid_by_adapter(fsf_req->adapter));
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
case FSF_SQ_NO_RETRY_POSSIBLE:
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
- /* dealt with in the respective functions */
+ return;
+ case FSF_SQ_COMMAND_ABORTED:
+ req->status |= ZFCP_STATUS_FSFREQ_ABORTED;
break;
- default:
- ZFCP_LOG_NORMAL("bug: Additional status info could "
- "not be interpreted properly.\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL,
- (char *) &fsf_req->qtcb->header.fsf_status_qual,
- sizeof (union fsf_status_qual));
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ case FSF_SQ_NO_RECOM:
+ dev_err(&req->adapter->ccw_device->dev,
+ "No recommendation could be given for a "
+ "problem on the adapter.\n");
+ zfcp_erp_adapter_shutdown(req->adapter, 0, 121, req);
break;
}
-
- return retval;
+ /* all non-return stats set FSFREQ_ERROR*/
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
-/**
- * zfcp_fsf_link_down_info_eval - evaluate link down information block
- */
-static void
-zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *fsf_req, u8 id,
- struct fsf_link_down_info *link_down)
+static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
{
- struct zfcp_adapter *adapter = fsf_req->adapter;
-
- if (atomic_test_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED,
- &adapter->status))
+ if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
return;
- atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
-
- if (link_down == NULL)
- goto out;
-
- switch (link_down->error_code) {
- case FSF_PSQ_LINK_NO_LIGHT:
- ZFCP_LOG_NORMAL("The local link to adapter %s is down "
- "(no light detected)\n",
- zfcp_get_busid_by_adapter(adapter));
- break;
- case FSF_PSQ_LINK_WRAP_PLUG:
- ZFCP_LOG_NORMAL("The local link to adapter %s is down "
- "(wrap plug detected)\n",
- zfcp_get_busid_by_adapter(adapter));
- break;
- case FSF_PSQ_LINK_NO_FCP:
- ZFCP_LOG_NORMAL("The local link to adapter %s is down "
- "(adjacent node on link does not support FCP)\n",
- zfcp_get_busid_by_adapter(adapter));
+ switch (req->qtcb->header.fsf_status) {
+ case FSF_UNKNOWN_COMMAND:
+ dev_err(&req->adapter->ccw_device->dev,
+ "Command issued by the device driver (0x%x) is "
+ "not known by the adapter.\n",
+ req->qtcb->header.fsf_command);
+ zfcp_erp_adapter_shutdown(req->adapter, 0, 120, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
- case FSF_PSQ_LINK_FIRMWARE_UPDATE:
- ZFCP_LOG_NORMAL("The local link to adapter %s is down "
- "(firmware update in progress)\n",
- zfcp_get_busid_by_adapter(adapter));
- break;
- case FSF_PSQ_LINK_INVALID_WWPN:
- ZFCP_LOG_NORMAL("The local link to adapter %s is down "
- "(duplicate or invalid WWPN detected)\n",
- zfcp_get_busid_by_adapter(adapter));
+ case FSF_ADAPTER_STATUS_AVAILABLE:
+ zfcp_fsf_fsfstatus_qual_eval(req);
break;
- case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
- ZFCP_LOG_NORMAL("The local link to adapter %s is down "
- "(no support for NPIV by Fabric)\n",
- zfcp_get_busid_by_adapter(adapter));
+ }
+}
+
+static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
+{
+ struct zfcp_adapter *adapter = req->adapter;
+ struct fsf_qtcb *qtcb = req->qtcb;
+ union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
+
+ zfcp_hba_dbf_event_fsf_response(req);
+
+ if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR |
+ ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */
+ return;
+ }
+
+ switch (qtcb->prefix.prot_status) {
+ case FSF_PROT_GOOD:
+ case FSF_PROT_FSF_STATUS_PRESENTED:
+ return;
+ case FSF_PROT_QTCB_VERSION_ERROR:
+ dev_err(&adapter->ccw_device->dev,
+ "The QTCB version requested by zfcp (0x%x) is not "
+ "supported by the FCP adapter (lowest supported "
+ "0x%x, highest supported 0x%x).\n",
+ FSF_QTCB_CURRENT_VERSION, psq->word[0],
+ psq->word[1]);
+ zfcp_erp_adapter_shutdown(adapter, 0, 117, req);
break;
- case FSF_PSQ_LINK_NO_FCP_RESOURCES:
- ZFCP_LOG_NORMAL("The local link to adapter %s is down "
- "(out of resource in FCP daughtercard)\n",
- zfcp_get_busid_by_adapter(adapter));
+ case FSF_PROT_ERROR_STATE:
+ case FSF_PROT_SEQ_NUMB_ERROR:
+ zfcp_erp_adapter_reopen(adapter, 0, 98, req);
+ req->status |= ZFCP_STATUS_FSFREQ_RETRY;
break;
- case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
- ZFCP_LOG_NORMAL("The local link to adapter %s is down "
- "(out of resource in Fabric)\n",
- zfcp_get_busid_by_adapter(adapter));
+ case FSF_PROT_UNSUPP_QTCB_TYPE:
+ dev_err(&adapter->ccw_device->dev,
+ "Packet header type used by the device driver is "
+ "incompatible with that used on the adapter.\n");
+ zfcp_erp_adapter_shutdown(adapter, 0, 118, req);
break;
- case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
- ZFCP_LOG_NORMAL("The local link to adapter %s is down "
- "(unable to Fabric login)\n",
- zfcp_get_busid_by_adapter(adapter));
+ case FSF_PROT_HOST_CONNECTION_INITIALIZING:
+ atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
+ &adapter->status);
break;
- case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
- ZFCP_LOG_NORMAL("WWPN assignment file corrupted on adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
+ case FSF_PROT_DUPLICATE_REQUEST_ID:
+ dev_err(&adapter->ccw_device->dev,
+ "The request identifier 0x%Lx is ambiguous.\n",
+ (unsigned long long)qtcb->bottom.support.req_handle);
+ zfcp_erp_adapter_shutdown(adapter, 0, 78, req);
break;
- case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
- ZFCP_LOG_NORMAL("Mode table corrupted on adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
+ case FSF_PROT_LINK_DOWN:
+ zfcp_fsf_link_down_info_eval(req, 37, &psq->link_down_info);
+ /* FIXME: reopening adapter now? better wait for link up */
+ zfcp_erp_adapter_reopen(adapter, 0, 79, req);
break;
- case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
- ZFCP_LOG_NORMAL("No WWPN for assignment table on adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
+ case FSF_PROT_REEST_QUEUE:
+ /* All ports should be marked as ready to run again */
+ zfcp_erp_modify_adapter_status(adapter, 28, NULL,
+ ZFCP_STATUS_COMMON_RUNNING,
+ ZFCP_SET);
+ zfcp_erp_adapter_reopen(adapter,
+ ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
+ ZFCP_STATUS_COMMON_ERP_FAILED, 99, req);
break;
default:
- ZFCP_LOG_NORMAL("The local link to adapter %s is down "
- "(warning: unknown reason code %d)\n",
- zfcp_get_busid_by_adapter(adapter),
- link_down->error_code);
- }
-
- if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
- ZFCP_LOG_DEBUG("Debug information to link down: "
- "primary_status=0x%02x "
- "ioerr_code=0x%02x "
- "action_code=0x%02x "
- "reason_code=0x%02x "
- "explanation_code=0x%02x "
- "vendor_specific_code=0x%02x\n",
- link_down->primary_status,
- link_down->ioerr_code,
- link_down->action_code,
- link_down->reason_code,
- link_down->explanation_code,
- link_down->vendor_specific_code);
-
- out:
- zfcp_erp_adapter_failed(adapter, id, fsf_req);
+ dev_err(&adapter->ccw_device->dev,
+ "Transfer protocol status information"
+ "provided by the adapter (0x%x) "
+ "is not compatible with the device driver.\n",
+ qtcb->prefix.prot_status);
+ zfcp_erp_adapter_shutdown(adapter, 0, 119, req);
+ }
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
-/*
- * function: zfcp_fsf_req_dispatch
- *
- * purpose: calls the appropriate command specific handler
+/**
+ * zfcp_fsf_req_complete - process completion of a FSF request
+ * @fsf_req: The FSF request that has been completed.
*
- * returns:
+ * When a request has been completed either from the FCP adapter,
+ * or it has been dismissed due to a queue shutdown, this function
+ * is called to process the completion status and trigger further
+ * events related to the FSF request.
*/
-static int
-zfcp_fsf_req_dispatch(struct zfcp_fsf_req *fsf_req)
+void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
{
- struct zfcp_erp_action *erp_action = fsf_req->erp_action;
- struct zfcp_adapter *adapter = fsf_req->adapter;
- int retval = 0;
+ if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
+ zfcp_fsf_status_read_handler(req);
+ return;
+ }
+ del_timer(&req->timer);
+ zfcp_fsf_protstatus_eval(req);
+ zfcp_fsf_fsfstatus_eval(req);
+ req->handler(req);
- switch (fsf_req->fsf_command) {
+ if (req->erp_action)
+ zfcp_erp_notify(req->erp_action, 0);
+ req->status |= ZFCP_STATUS_FSFREQ_COMPLETED;
- case FSF_QTCB_FCP_CMND:
- zfcp_fsf_send_fcp_command_handler(fsf_req);
- break;
+ if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
+ zfcp_fsf_req_free(req);
+ else
+ /* notify initiator waiting for the requests completion */
+ /*
+ * FIXME: Race! We must not access fsf_req here as it might have been
+ * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED
+ * flag. It's an improbable case. But, we have the same paranoia for
+ * the cleanup flag already.
+ * Might better be handled using complete()?
+ * (setting the flag and doing wakeup ought to be atomic
+ * with regard to checking the flag as long as waitqueue is
+ * part of the to be released structure)
+ */
+ wake_up(&req->completion_wq);
+}
- case FSF_QTCB_ABORT_FCP_CMND:
- zfcp_fsf_abort_fcp_command_handler(fsf_req);
- break;
+static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
+{
+ struct fsf_qtcb_bottom_config *bottom;
+ struct zfcp_adapter *adapter = req->adapter;
+ struct Scsi_Host *shost = adapter->scsi_host;
- case FSF_QTCB_SEND_GENERIC:
- zfcp_fsf_send_ct_handler(fsf_req);
- break;
+ bottom = &req->qtcb->bottom.config;
- case FSF_QTCB_OPEN_PORT_WITH_DID:
- zfcp_fsf_open_port_handler(fsf_req);
- break;
+ if (req->data)
+ memcpy(req->data, bottom, sizeof(*bottom));
- case FSF_QTCB_OPEN_LUN:
- zfcp_fsf_open_unit_handler(fsf_req);
- break;
+ fc_host_node_name(shost) = bottom->nport_serv_param.wwnn;
+ fc_host_port_name(shost) = bottom->nport_serv_param.wwpn;
+ fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK;
+ fc_host_speed(shost) = bottom->fc_link_speed;
+ fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
- case FSF_QTCB_CLOSE_LUN:
- zfcp_fsf_close_unit_handler(fsf_req);
- break;
+ adapter->hydra_version = bottom->adapter_type;
+ adapter->timer_ticks = bottom->timer_interval;
- case FSF_QTCB_CLOSE_PORT:
- zfcp_fsf_close_port_handler(fsf_req);
- break;
+ if (fc_host_permanent_port_name(shost) == -1)
+ fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
- case FSF_QTCB_CLOSE_PHYSICAL_PORT:
- zfcp_fsf_close_physical_port_handler(fsf_req);
- break;
+ switch (bottom->fc_topology) {
+ case FSF_TOPO_P2P:
+ adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK;
+ adapter->peer_wwpn = bottom->plogi_payload.wwpn;
+ adapter->peer_wwnn = bottom->plogi_payload.wwnn;
+ fc_host_port_type(shost) = FC_PORTTYPE_PTP;
+ if (req->erp_action)
+ dev_info(&adapter->ccw_device->dev,
+ "Point-to-Point fibrechannel "
+ "configuration detected.\n");
+ break;
+ case FSF_TOPO_FABRIC:
+ fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
+ if (req->erp_action)
+ dev_info(&adapter->ccw_device->dev,
+ "Switched fabric fibrechannel "
+ "network detected.\n");
+ break;
+ case FSF_TOPO_AL:
+ fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
+ dev_err(&adapter->ccw_device->dev,
+ "Unsupported arbitrated loop fibrechannel "
+ "topology detected, shutting down "
+ "adapter.\n");
+ zfcp_erp_adapter_shutdown(adapter, 0, 127, req);
+ return -EIO;
+ default:
+ fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
+ dev_err(&adapter->ccw_device->dev,
+ "The fibrechannel topology reported by the"
+ " adapter is not known by the zfcp driver,"
+ " shutting down adapter.\n");
+ zfcp_erp_adapter_shutdown(adapter, 0, 128, req);
+ return -EIO;
+ }
- case FSF_QTCB_EXCHANGE_CONFIG_DATA:
- zfcp_fsf_exchange_config_data_handler(fsf_req);
- break;
+ return 0;
+}
- case FSF_QTCB_EXCHANGE_PORT_DATA:
- zfcp_fsf_exchange_port_data_handler(fsf_req);
- break;
+static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
+{
+ struct zfcp_adapter *adapter = req->adapter;
+ struct fsf_qtcb *qtcb = req->qtcb;
+ struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
+ struct Scsi_Host *shost = adapter->scsi_host;
- case FSF_QTCB_SEND_ELS:
- zfcp_fsf_send_els_handler(fsf_req);
- break;
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ return;
- case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
- zfcp_fsf_control_file_handler(fsf_req);
- break;
+ adapter->fsf_lic_version = bottom->lic_version;
+ adapter->adapter_features = bottom->adapter_features;
+ adapter->connection_features = bottom->connection_features;
+ adapter->peer_wwpn = 0;
+ adapter->peer_wwnn = 0;
+ adapter->peer_d_id = 0;
- case FSF_QTCB_UPLOAD_CONTROL_FILE:
- zfcp_fsf_control_file_handler(fsf_req);
+ switch (qtcb->header.fsf_status) {
+ case FSF_GOOD:
+ if (zfcp_fsf_exchange_config_evaluate(req))
+ return;
+
+ if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
+ dev_err(&adapter->ccw_device->dev,
+ "Maximum QTCB size (%d bytes) allowed by "
+ "the adapter is lower than the minimum "
+ "required by the driver (%ld bytes).\n",
+ bottom->max_qtcb_size,
+ sizeof(struct fsf_qtcb));
+ zfcp_erp_adapter_shutdown(adapter, 0, 129, req);
+ return;
+ }
+ atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
+ &adapter->status);
break;
+ case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
+ fc_host_node_name(shost) = 0;
+ fc_host_port_name(shost) = 0;
+ fc_host_port_id(shost) = 0;
+ fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
+ fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
+ adapter->hydra_version = 0;
+ atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
+ &adapter->status);
+
+ zfcp_fsf_link_down_info_eval(req, 42,
+ &qtcb->header.fsf_status_qual.link_down_info);
+ break;
default:
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- ZFCP_LOG_NORMAL("bug: Command issued by the device driver is "
- "not supported by the adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- if (fsf_req->fsf_command != fsf_req->qtcb->header.fsf_command)
- ZFCP_LOG_NORMAL
- ("bug: Command issued by the device driver differs "
- "from the command returned by the adapter %s "
- "(debug info 0x%x, 0x%x).\n",
- zfcp_get_busid_by_adapter(adapter),
- fsf_req->fsf_command,
- fsf_req->qtcb->header.fsf_command);
+ zfcp_erp_adapter_shutdown(adapter, 0, 130, req);
+ return;
}
- if (!erp_action)
- return retval;
-
- zfcp_erp_async_handler(erp_action, 0);
+ if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
+ adapter->hardware_version = bottom->hardware_version;
+ memcpy(fc_host_serial_number(shost), bottom->serial_number,
+ min(FC_SERIAL_NUMBER_SIZE, 17));
+ EBCASC(fc_host_serial_number(shost),
+ min(FC_SERIAL_NUMBER_SIZE, 17));
+ }
- return retval;
+ if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
+ dev_err(&adapter->ccw_device->dev,
+ "The adapter only supports newer control block "
+ "versions, try updated device driver.\n");
+ zfcp_erp_adapter_shutdown(adapter, 0, 125, req);
+ return;
+ }
+ if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
+ dev_err(&adapter->ccw_device->dev,
+ "The adapter only supports older control block "
+ "versions, consider a microcode upgrade.\n");
+ zfcp_erp_adapter_shutdown(adapter, 0, 126, req);
+ }
}
-/*
- * function: zfcp_fsf_status_read
- *
- * purpose: initiates a Status Read command at the specified adapter
- *
- * returns:
- */
-int
-zfcp_fsf_status_read(struct zfcp_adapter *adapter, int req_flags)
+static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
{
- struct zfcp_fsf_req *fsf_req;
- struct fsf_status_read_buffer *status_buffer;
- unsigned long lock_flags;
- volatile struct qdio_buffer_element *sbale;
- int retval = 0;
-
- /* setup new FSF request */
- retval = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS,
- req_flags | ZFCP_REQ_NO_QTCB,
- adapter->pool.fsf_req_status_read,
- &lock_flags, &fsf_req);
- if (retval < 0) {
- ZFCP_LOG_INFO("error: Could not create unsolicited status "
- "buffer for adapter %s.\n",
- zfcp_get_busid_by_adapter(adapter));
- goto failed_req_create;
- }
-
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
- sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS;
- sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY;
- fsf_req->sbale_curr = 2;
+ struct zfcp_adapter *adapter = req->adapter;
+ struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
+ struct Scsi_Host *shost = adapter->scsi_host;
- status_buffer =
- mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC);
- if (!status_buffer) {
- ZFCP_LOG_NORMAL("bug: could not get some buffer\n");
- goto failed_buf;
- }
- memset(status_buffer, 0, sizeof (struct fsf_status_read_buffer));
- fsf_req->data = (unsigned long) status_buffer;
+ if (req->data)
+ memcpy(req->data, bottom, sizeof(*bottom));
- /* insert pointer to respective buffer */
- sbale = zfcp_qdio_sbale_curr(fsf_req);
- sbale->addr = (void *) status_buffer;
- sbale->length = sizeof(struct fsf_status_read_buffer);
+ if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
+ fc_host_permanent_port_name(shost) = bottom->wwpn;
+ else
+ fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
+ fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
+ fc_host_supported_speeds(shost) = bottom->supported_speed;
+}
- retval = zfcp_fsf_req_send(fsf_req);
- if (retval) {
- ZFCP_LOG_DEBUG("error: Could not set-up unsolicited status "
- "environment.\n");
- goto failed_req_send;
- }
+static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
+{
+ struct zfcp_adapter *adapter = req->adapter;
+ struct fsf_qtcb *qtcb = req->qtcb;
- ZFCP_LOG_TRACE("Status Read request initiated (adapter%s)\n",
- zfcp_get_busid_by_adapter(adapter));
- goto out;
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ return;
- failed_req_send:
- mempool_free(status_buffer, adapter->pool.data_status_read);
+ switch (qtcb->header.fsf_status) {
+ case FSF_GOOD:
+ zfcp_fsf_exchange_port_evaluate(req);
+ atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
+ break;
+ case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
+ zfcp_fsf_exchange_port_evaluate(req);
+ atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
+ zfcp_fsf_link_down_info_eval(req, 43,
+ &qtcb->header.fsf_status_qual.link_down_info);
+ break;
+ }
+}
- failed_buf:
- zfcp_fsf_req_free(fsf_req);
- failed_req_create:
- zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL);
- out:
- write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
- return retval;
+static int zfcp_fsf_sbal_check(struct zfcp_qdio_queue *queue)
+{
+ spin_lock(&queue->lock);
+ if (atomic_read(&queue->count))
+ return 1;
+ spin_unlock(&queue->lock);
+ return 0;
}
-static int
-zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *fsf_req)
+static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter)
{
- struct fsf_status_read_buffer *status_buffer;
- struct zfcp_adapter *adapter;
- struct zfcp_port *port;
- unsigned long flags;
+ long ret;
+ struct zfcp_qdio_queue *req_q = &adapter->req_q;
- status_buffer = (struct fsf_status_read_buffer *) fsf_req->data;
- adapter = fsf_req->adapter;
+ spin_unlock(&req_q->lock);
+ ret = wait_event_interruptible_timeout(adapter->request_wq,
+ zfcp_fsf_sbal_check(req_q), 5 * HZ);
+ if (ret > 0)
+ return 0;
- read_lock_irqsave(&zfcp_data.config_lock, flags);
- list_for_each_entry(port, &adapter->port_list_head, list)
- if (port->d_id == (status_buffer->d_id & ZFCP_DID_MASK))
- break;
- read_unlock_irqrestore(&zfcp_data.config_lock, flags);
+ spin_lock(&req_q->lock);
+ return -EIO;
+}
- if (!port || (port->d_id != (status_buffer->d_id & ZFCP_DID_MASK))) {
- ZFCP_LOG_NORMAL("bug: Reopen port indication received for "
- "nonexisting port with d_id 0x%06x on "
- "adapter %s. Ignored.\n",
- status_buffer->d_id & ZFCP_DID_MASK,
- zfcp_get_busid_by_adapter(adapter));
- goto out;
- }
+static struct zfcp_fsf_req *zfcp_fsf_alloc_noqtcb(mempool_t *pool)
+{
+ struct zfcp_fsf_req *req;
+ req = mempool_alloc(pool, GFP_ATOMIC);
+ if (!req)
+ return NULL;
+ memset(req, 0, sizeof(*req));
+ return req;
+}
- switch (status_buffer->status_subtype) {
+static struct zfcp_fsf_req *zfcp_fsf_alloc_qtcb(mempool_t *pool)
+{
+ struct zfcp_fsf_req_qtcb *qtcb;
- case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT:
- zfcp_erp_port_reopen(port, 0, 101, fsf_req);
- break;
+ if (likely(pool))
+ qtcb = mempool_alloc(pool, GFP_ATOMIC);
+ else
+ qtcb = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache,
+ GFP_ATOMIC);
+ if (unlikely(!qtcb))
+ return NULL;
- case FSF_STATUS_READ_SUB_ERROR_PORT:
- zfcp_erp_port_shutdown(port, 0, 122, fsf_req);
- break;
+ memset(qtcb, 0, sizeof(*qtcb));
+ qtcb->fsf_req.qtcb = &qtcb->qtcb;
+ qtcb->fsf_req.pool = pool;
- default:
- ZFCP_LOG_NORMAL("bug: Undefined status subtype received "
- "for a reopen indication on port with "
- "d_id 0x%06x on the adapter %s. "
- "Ignored. (debug info 0x%x)\n",
- status_buffer->d_id,
- zfcp_get_busid_by_adapter(adapter),
- status_buffer->status_subtype);
- }
- out:
- return 0;
+ return &qtcb->fsf_req;
}
-/*
- * function: zfcp_fsf_status_read_handler
- *
- * purpose: is called for finished Open Port command
- *
- * returns:
- */
-static int
-zfcp_fsf_status_read_handler(struct zfcp_fsf_req *fsf_req)
+static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter,
+ u32 fsf_cmd, int req_flags,
+ mempool_t *pool)
{
- int retval = 0;
- struct zfcp_adapter *adapter = fsf_req->adapter;
- struct fsf_status_read_buffer *status_buffer =
- (struct fsf_status_read_buffer *) fsf_req->data;
- struct fsf_bit_error_payload *fsf_bit_error;
-
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
- zfcp_hba_dbf_event_fsf_unsol("dism", adapter, status_buffer);
- mempool_free(status_buffer, adapter->pool.data_status_read);
- zfcp_fsf_req_free(fsf_req);
- goto out;
- }
+ volatile struct qdio_buffer_element *sbale;
- zfcp_hba_dbf_event_fsf_unsol("read", adapter, status_buffer);
+ struct zfcp_fsf_req *req;
+ struct zfcp_qdio_queue *req_q = &adapter->req_q;
- switch (status_buffer->status_type) {
+ if (req_flags & ZFCP_REQ_NO_QTCB)
+ req = zfcp_fsf_alloc_noqtcb(pool);
+ else
+ req = zfcp_fsf_alloc_qtcb(pool);
- case FSF_STATUS_READ_PORT_CLOSED:
- zfcp_fsf_status_read_port_closed(fsf_req);
- break;
+ if (unlikely(!req))
+ return ERR_PTR(-EIO);
- case FSF_STATUS_READ_INCOMING_ELS:
- zfcp_fsf_incoming_els(fsf_req);
- break;
+ if (adapter->req_no == 0)
+ adapter->req_no++;
- case FSF_STATUS_READ_SENSE_DATA_AVAIL:
- ZFCP_LOG_INFO("unsolicited sense data received (adapter %s)\n",
- zfcp_get_busid_by_adapter(adapter));
- break;
+ INIT_LIST_HEAD(&req->list);
+ init_timer(&req->timer);
+ init_waitqueue_head(&req->completion_wq);
- case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
- fsf_bit_error = (struct fsf_bit_error_payload *)
- status_buffer->payload;
- ZFCP_LOG_NORMAL("Warning: bit error threshold data "
- "received (adapter %s, "
- "link failures = %i, loss of sync errors = %i, "
- "loss of signal errors = %i, "
- "primitive sequence errors = %i, "
- "invalid transmission word errors = %i, "
- "CRC errors = %i)\n",
- zfcp_get_busid_by_adapter(adapter),
- fsf_bit_error->link_failure_error_count,
- fsf_bit_error->loss_of_sync_error_count,
- fsf_bit_error->loss_of_signal_error_count,
- fsf_bit_error->primitive_sequence_error_count,
- fsf_bit_error->invalid_transmission_word_error_count,
- fsf_bit_error->crc_error_count);
- ZFCP_LOG_INFO("Additional bit error threshold data "
- "(adapter %s, "
- "primitive sequence event time-outs = %i, "
- "elastic buffer overrun errors = %i, "
- "advertised receive buffer-to-buffer credit = %i, "
- "current receice buffer-to-buffer credit = %i, "
- "advertised transmit buffer-to-buffer credit = %i, "
- "current transmit buffer-to-buffer credit = %i)\n",
- zfcp_get_busid_by_adapter(adapter),
- fsf_bit_error->primitive_sequence_event_timeout_count,
- fsf_bit_error->elastic_buffer_overrun_error_count,
- fsf_bit_error->advertised_receive_b2b_credit,
- fsf_bit_error->current_receive_b2b_credit,
- fsf_bit_error->advertised_transmit_b2b_credit,
- fsf_bit_error->current_transmit_b2b_credit);
- break;
+ req->adapter = adapter;
+ req->fsf_command = fsf_cmd;
+ req->req_id = adapter->req_no++;
+ req->sbal_number = 1;
+ req->sbal_first = req_q->first;
+ req->sbal_last = req_q->first;
+ req->sbale_curr = 1;
- case FSF_STATUS_READ_LINK_DOWN:
- switch (status_buffer->status_subtype) {
- case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
- ZFCP_LOG_INFO("Physical link to adapter %s is down\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_fsf_link_down_info_eval(fsf_req, 38,
- (struct fsf_link_down_info *)
- &status_buffer->payload);
- break;
- case FSF_STATUS_READ_SUB_FDISC_FAILED:
- ZFCP_LOG_INFO("Local link to adapter %s is down "
- "due to failed FDISC login\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_fsf_link_down_info_eval(fsf_req, 39,
- (struct fsf_link_down_info *)
- &status_buffer->payload);
- break;
- case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
- ZFCP_LOG_INFO("Local link to adapter %s is down "
- "due to firmware update on adapter\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_fsf_link_down_info_eval(fsf_req, 40, NULL);
- break;
- default:
- ZFCP_LOG_INFO("Local link to adapter %s is down "
- "due to unknown reason\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_fsf_link_down_info_eval(fsf_req, 41, NULL);
- };
- break;
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].addr = (void *) req->req_id;
+ sbale[0].flags |= SBAL_FLAGS0_COMMAND;
- case FSF_STATUS_READ_LINK_UP:
- ZFCP_LOG_NORMAL("Local link to adapter %s was replugged. "
- "Restarting operations on this adapter\n",
- zfcp_get_busid_by_adapter(adapter));
- /* All ports should be marked as ready to run again */
- zfcp_erp_modify_adapter_status(adapter, 30, NULL,
- ZFCP_STATUS_COMMON_RUNNING,
- ZFCP_SET);
- zfcp_erp_adapter_reopen(adapter,
- ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
- | ZFCP_STATUS_COMMON_ERP_FAILED,
- 102, fsf_req);
- break;
+ if (likely(req->qtcb)) {
+ req->qtcb->prefix.req_seq_no = req->adapter->fsf_req_seq_no;
+ req->qtcb->prefix.req_id = req->req_id;
+ req->qtcb->prefix.ulp_info = 26;
+ req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
+ req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
+ req->qtcb->header.req_handle = req->req_id;
+ req->qtcb->header.fsf_command = req->fsf_command;
+ req->seq_no = adapter->fsf_req_seq_no;
+ req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
+ sbale[1].addr = (void *) req->qtcb;
+ sbale[1].length = sizeof(struct fsf_qtcb);
+ }
- case FSF_STATUS_READ_NOTIFICATION_LOST:
- ZFCP_LOG_NORMAL("Unsolicited status notification(s) lost: "
- "adapter %s%s%s%s%s%s%s%s%s\n",
- zfcp_get_busid_by_adapter(adapter),
- (status_buffer->status_subtype &
- FSF_STATUS_READ_SUB_INCOMING_ELS) ?
- ", incoming ELS" : "",
- (status_buffer->status_subtype &
- FSF_STATUS_READ_SUB_SENSE_DATA) ?
- ", sense data" : "",
- (status_buffer->status_subtype &
- FSF_STATUS_READ_SUB_LINK_STATUS) ?
- ", link status change" : "",
- (status_buffer->status_subtype &
- FSF_STATUS_READ_SUB_PORT_CLOSED) ?
- ", port close" : "",
- (status_buffer->status_subtype &
- FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD) ?
- ", bit error exception" : "",
- (status_buffer->status_subtype &
- FSF_STATUS_READ_SUB_ACT_UPDATED) ?
- ", ACT update" : "",
- (status_buffer->status_subtype &
- FSF_STATUS_READ_SUB_ACT_HARDENED) ?
- ", ACT hardening" : "",
- (status_buffer->status_subtype &
- FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT) ?
- ", adapter feature change" : "");
-
- if (status_buffer->status_subtype &
- FSF_STATUS_READ_SUB_ACT_UPDATED)
- zfcp_erp_adapter_access_changed(adapter, 135, fsf_req);
- break;
+ if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) {
+ zfcp_fsf_req_free(req);
+ return ERR_PTR(-EIO);
+ }
- case FSF_STATUS_READ_CFDC_UPDATED:
- ZFCP_LOG_NORMAL("CFDC has been updated on the adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_erp_adapter_access_changed(adapter, 136, fsf_req);
- break;
+ if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP))
+ req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- case FSF_STATUS_READ_CFDC_HARDENED:
- switch (status_buffer->status_subtype) {
- case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE:
- ZFCP_LOG_NORMAL("CFDC of adapter %s saved on SE\n",
- zfcp_get_busid_by_adapter(adapter));
- break;
- case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2:
- ZFCP_LOG_NORMAL("CFDC of adapter %s has been copied "
- "to the secondary SE\n",
- zfcp_get_busid_by_adapter(adapter));
- break;
- default:
- ZFCP_LOG_NORMAL("CFDC of adapter %s has been hardened\n",
- zfcp_get_busid_by_adapter(adapter));
- }
- break;
+ return req;
+}
- case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
- ZFCP_LOG_INFO("List of supported features on adapter %s has "
- "been changed from 0x%08X to 0x%08X\n",
- zfcp_get_busid_by_adapter(adapter),
- *(u32*) (status_buffer->payload + 4),
- *(u32*) (status_buffer->payload));
- adapter->adapter_features = *(u32*) status_buffer->payload;
- break;
+static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
+{
+ struct zfcp_adapter *adapter = req->adapter;
+ struct zfcp_qdio_queue *req_q = &adapter->req_q;
+ int idx;
- default:
- ZFCP_LOG_NORMAL("warning: An unsolicited status packet of unknown "
- "type was received (debug info 0x%x)\n",
- status_buffer->status_type);
- ZFCP_LOG_DEBUG("Dump of status_read_buffer %p:\n",
- status_buffer);
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
- (char *) status_buffer,
- sizeof (struct fsf_status_read_buffer));
- break;
- }
- mempool_free(status_buffer, adapter->pool.data_status_read);
- zfcp_fsf_req_free(fsf_req);
- /*
- * recycle buffer and start new request repeat until outbound
- * queue is empty or adapter shutdown is requested
- */
- /*
- * FIXME(qdio):
- * we may wait in the req_create for 5s during shutdown, so
- * qdio_cleanup will have to wait at least that long before returning
- * with failure to allow us a proper cleanup under all circumstances
- */
- /*
- * FIXME:
- * allocation failure possible? (Is this code needed?)
- */
- retval = zfcp_fsf_status_read(adapter, 0);
- if (retval < 0) {
- ZFCP_LOG_INFO("Failed to create unsolicited status read "
- "request for the adapter %s.\n",
- zfcp_get_busid_by_adapter(adapter));
- /* temporary fix to avoid status read buffer shortage */
- adapter->status_read_failed++;
- if ((ZFCP_STATUS_READS_RECOM - adapter->status_read_failed)
- < ZFCP_STATUS_READ_FAILED_THRESHOLD) {
- ZFCP_LOG_INFO("restart adapter %s due to status read "
- "buffer shortage\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_erp_adapter_reopen(adapter, 0, 103, fsf_req);
- }
+ /* put allocated FSF request into hash table */
+ spin_lock(&adapter->req_list_lock);
+ idx = zfcp_reqlist_hash(req->req_id);
+ list_add_tail(&req->list, &adapter->req_list[idx]);
+ spin_unlock(&adapter->req_list_lock);
+
+ req->issued = get_clock();
+ if (zfcp_qdio_send(req)) {
+ /* Queues are down..... */
+ del_timer(&req->timer);
+ spin_lock(&adapter->req_list_lock);
+ zfcp_reqlist_remove(adapter, req);
+ spin_unlock(&adapter->req_list_lock);
+ /* undo changes in request queue made for this request */
+ atomic_add(req->sbal_number, &req_q->count);
+ req_q->first -= req->sbal_number;
+ req_q->first += QDIO_MAX_BUFFERS_PER_Q;
+ req_q->first %= QDIO_MAX_BUFFERS_PER_Q; /* wrap */
+ zfcp_erp_adapter_reopen(adapter, 0, 116, req);
+ return -EIO;
}
- out:
- return retval;
+
+ /* Don't increase for unsolicited status */
+ if (req->qtcb)
+ adapter->fsf_req_seq_no++;
+
+ return 0;
}
-/*
- * function: zfcp_fsf_abort_fcp_command
- *
- * purpose: tells FSF to abort a running SCSI command
- *
- * returns: address of initiated FSF request
- * NULL - request could not be initiated
- *
- * FIXME(design): should be watched by a timeout !!!
- * FIXME(design) shouldn't this be modified to return an int
- * also...don't know how though
+/**
+ * zfcp_fsf_status_read - send status read request
+ * @adapter: pointer to struct zfcp_adapter
+ * @req_flags: request flags
+ * Returns: 0 on success, ERROR otherwise
*/
-struct zfcp_fsf_req *
-zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
- struct zfcp_adapter *adapter,
- struct zfcp_unit *unit, int req_flags)
+int zfcp_fsf_status_read(struct zfcp_adapter *adapter)
{
+ struct zfcp_fsf_req *req;
+ struct fsf_status_read_buffer *sr_buf;
volatile struct qdio_buffer_element *sbale;
- struct zfcp_fsf_req *fsf_req = NULL;
- unsigned long lock_flags;
- int retval = 0;
-
- /* setup new FSF request */
- retval = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND,
- req_flags, adapter->pool.fsf_req_abort,
- &lock_flags, &fsf_req);
- if (retval < 0) {
- ZFCP_LOG_INFO("error: Failed to create an abort command "
- "request for lun 0x%016Lx on port 0x%016Lx "
- "on adapter %s.\n",
- unit->fcp_lun,
- unit->port->wwpn,
- zfcp_get_busid_by_adapter(adapter));
- goto out;
- }
-
- if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
- &unit->status)))
- goto unit_blocked;
+ int retval = -EIO;
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
- sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
- sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
+ spin_lock(&adapter->req_q.lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
- fsf_req->data = (unsigned long) unit;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS,
+ ZFCP_REQ_NO_QTCB,
+ adapter->pool.fsf_req_status_read);
+ if (unlikely(IS_ERR(req))) {
+ retval = PTR_ERR(req);
+ goto out;
+ }
- /* set handles of unit and its parent port in QTCB */
- fsf_req->qtcb->header.lun_handle = unit->handle;
- fsf_req->qtcb->header.port_handle = unit->port->handle;
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS;
+ sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY;
+ req->sbale_curr = 2;
- /* set handle of request which should be aborted */
- fsf_req->qtcb->bottom.support.req_handle = (u64) old_req_id;
+ sr_buf = mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC);
+ if (!sr_buf) {
+ retval = -ENOMEM;
+ goto failed_buf;
+ }
+ memset(sr_buf, 0, sizeof(*sr_buf));
+ req->data = sr_buf;
+ sbale = zfcp_qdio_sbale_curr(req);
+ sbale->addr = (void *) sr_buf;
+ sbale->length = sizeof(*sr_buf);
- zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT);
- retval = zfcp_fsf_req_send(fsf_req);
- if (!retval)
- goto out;
+ retval = zfcp_fsf_req_send(req);
+ if (retval)
+ goto failed_req_send;
- unit_blocked:
- zfcp_fsf_req_free(fsf_req);
- fsf_req = NULL;
+ goto out;
- out:
- write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
- return fsf_req;
+failed_req_send:
+ mempool_free(sr_buf, adapter->pool.data_status_read);
+failed_buf:
+ zfcp_fsf_req_free(req);
+ zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL);
+out:
+ spin_unlock(&adapter->req_q.lock);
+ return retval;
}
-/*
- * function: zfcp_fsf_abort_fcp_command_handler
- *
- * purpose: is called for finished Abort FCP Command request
- *
- * returns:
- */
-static int
-zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *new_fsf_req)
+static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
{
- int retval = -EINVAL;
- struct zfcp_unit *unit;
- union fsf_status_qual *fsf_stat_qual =
- &new_fsf_req->qtcb->header.fsf_status_qual;
-
- if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
- /* do not set ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED */
- goto skip_fsfstatus;
- }
-
- unit = (struct zfcp_unit *) new_fsf_req->data;
+ struct zfcp_unit *unit = req->data;
+ union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
- /* evaluate FSF status in QTCB */
- switch (new_fsf_req->qtcb->header.fsf_status) {
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ return;
+ switch (req->qtcb->header.fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID:
- if (fsf_stat_qual->word[0] != fsf_stat_qual->word[1]) {
- /*
- * In this case a command that was sent prior to a port
- * reopen was aborted (handles are different). This is
- * fine.
- */
- } else {
- ZFCP_LOG_INFO("Temporary port identifier 0x%x for "
- "port 0x%016Lx on adapter %s invalid. "
- "This may happen occasionally.\n",
- unit->port->handle,
- unit->port->wwpn,
- zfcp_get_busid_by_unit(unit));
- ZFCP_LOG_INFO("status qualifier:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO,
- (char *) &new_fsf_req->qtcb->header.
- fsf_status_qual,
- sizeof (union fsf_status_qual));
- /* Let's hope this sorts out the mess */
+ if (fsq->word[0] == fsq->word[1]) {
zfcp_erp_adapter_reopen(unit->port->adapter, 0, 104,
- new_fsf_req);
- new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
break;
-
case FSF_LUN_HANDLE_NOT_VALID:
- if (fsf_stat_qual->word[0] != fsf_stat_qual->word[1]) {
- /*
- * In this case a command that was sent prior to a unit
- * reopen was aborted (handles are different).
- * This is fine.
- */
- } else {
- ZFCP_LOG_INFO
- ("Warning: Temporary LUN identifier 0x%x of LUN "
- "0x%016Lx on port 0x%016Lx on adapter %s is "
- "invalid. This may happen in rare cases. "
- "Trying to re-establish link.\n",
- unit->handle,
- unit->fcp_lun,
- unit->port->wwpn,
- zfcp_get_busid_by_unit(unit));
- ZFCP_LOG_DEBUG("Status qualifier data:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
- (char *) &new_fsf_req->qtcb->header.
- fsf_status_qual,
- sizeof (union fsf_status_qual));
- /* Let's hope this sorts out the mess */
- zfcp_erp_port_reopen(unit->port, 0, 105, new_fsf_req);
- new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ if (fsq->word[0] == fsq->word[1]) {
+ zfcp_erp_port_reopen(unit->port, 0, 105, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
break;
-
case FSF_FCP_COMMAND_DOES_NOT_EXIST:
- retval = 0;
- new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
+ req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
break;
-
case FSF_PORT_BOXED:
- ZFCP_LOG_INFO("Remote port 0x%016Lx on adapter %s needs to "
- "be reopened\n", unit->port->wwpn,
- zfcp_get_busid_by_unit(unit));
- zfcp_erp_port_boxed(unit->port, 47, new_fsf_req);
- new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR
- | ZFCP_STATUS_FSFREQ_RETRY;
+ zfcp_erp_port_boxed(unit->port, 47, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR |
+ ZFCP_STATUS_FSFREQ_RETRY;
break;
-
case FSF_LUN_BOXED:
- ZFCP_LOG_INFO(
- "unit 0x%016Lx on port 0x%016Lx on adapter %s needs "
- "to be reopened\n",
- unit->fcp_lun, unit->port->wwpn,
- zfcp_get_busid_by_unit(unit));
- zfcp_erp_unit_boxed(unit, 48, new_fsf_req);
- new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR
- | ZFCP_STATUS_FSFREQ_RETRY;
+ zfcp_erp_unit_boxed(unit, 48, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR |
+ ZFCP_STATUS_FSFREQ_RETRY;
break;
-
case FSF_ADAPTER_STATUS_AVAILABLE:
- switch (new_fsf_req->qtcb->header.fsf_status_qual.word[0]) {
+ switch (fsq->word[0]) {
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
zfcp_test_link(unit->port);
- new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
- /* SCSI stack will escalate */
- new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
- default:
- ZFCP_LOG_NORMAL
- ("bug: Wrong status qualifier 0x%x arrived.\n",
- new_fsf_req->qtcb->header.fsf_status_qual.word[0]);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
}
break;
-
case FSF_GOOD:
- retval = 0;
- new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
- break;
-
- default:
- ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
- "(debug info 0x%x)\n",
- new_fsf_req->qtcb->header.fsf_status);
+ req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
break;
}
- skip_fsfstatus:
- return retval;
}
/**
- * zfcp_use_one_sbal - checks whether req buffer and resp bother each fit into
- * one SBALE
- * Two scatter-gather lists are passed, one for the reqeust and one for the
- * response.
+ * zfcp_fsf_abort_fcp_command - abort running SCSI command
+ * @old_req_id: unsigned long
+ * @adapter: pointer to struct zfcp_adapter
+ * @unit: pointer to struct zfcp_unit
+ * @req_flags: integer specifying the request flags
+ * Returns: pointer to struct zfcp_fsf_req
+ *
+ * FIXME(design): should be watched by a timeout !!!
*/
-static inline int
-zfcp_use_one_sbal(struct scatterlist *req, int req_count,
- struct scatterlist *resp, int resp_count)
-{
- return ((req_count == 1) &&
- (resp_count == 1) &&
- (((unsigned long) zfcp_sg_to_address(&req[0]) &
- PAGE_MASK) ==
- ((unsigned long) (zfcp_sg_to_address(&req[0]) +
- req[0].length - 1) & PAGE_MASK)) &&
- (((unsigned long) zfcp_sg_to_address(&resp[0]) &
- PAGE_MASK) ==
- ((unsigned long) (zfcp_sg_to_address(&resp[0]) +
- resp[0].length - 1) & PAGE_MASK)));
-}
-/**
- * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
- * @ct: pointer to struct zfcp_send_ct which conatins all needed data for
- * the request
- * @pool: pointer to memory pool, if non-null this pool is used to allocate
- * a struct zfcp_fsf_req
- * @erp_action: pointer to erp_action, if non-null the Generic Service request
- * is sent within error recovery
- */
-int
-zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool,
- struct zfcp_erp_action *erp_action)
+struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
+ struct zfcp_adapter *adapter,
+ struct zfcp_unit *unit,
+ int req_flags)
{
volatile struct qdio_buffer_element *sbale;
- struct zfcp_port *port;
- struct zfcp_adapter *adapter;
- struct zfcp_fsf_req *fsf_req;
- unsigned long lock_flags;
- int bytes;
- int ret = 0;
-
- port = ct->port;
- adapter = port->adapter;
-
- ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC,
- ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
- pool, &lock_flags, &fsf_req);
- if (ret < 0) {
- ZFCP_LOG_INFO("error: Could not create CT request (FC-GS) for "
- "adapter: %s\n",
- zfcp_get_busid_by_adapter(adapter));
- goto failed_req;
- }
+ struct zfcp_fsf_req *req = NULL;
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
- if (zfcp_use_one_sbal(ct->req, ct->req_count,
- ct->resp, ct->resp_count)){
- /* both request buffer and response buffer
- fit into one sbale each */
- sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ;
- sbale[2].addr = zfcp_sg_to_address(&ct->req[0]);
- sbale[2].length = ct->req[0].length;
- sbale[3].addr = zfcp_sg_to_address(&ct->resp[0]);
- sbale[3].length = ct->resp[0].length;
- sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY;
- } else if (adapter->adapter_features &
- FSF_FEATURE_ELS_CT_CHAINED_SBALS) {
- /* try to use chained SBALs */
- bytes = zfcp_qdio_sbals_from_sg(fsf_req,
- SBAL_FLAGS0_TYPE_WRITE_READ,
- ct->req, ct->req_count,
- ZFCP_MAX_SBALS_PER_CT_REQ);
- if (bytes <= 0) {
- ZFCP_LOG_INFO("error: creation of CT request failed "
- "on adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- if (bytes == 0)
- ret = -ENOMEM;
- else
- ret = bytes;
-
- goto failed_send;
- }
- fsf_req->qtcb->bottom.support.req_buf_length = bytes;
- fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
- bytes = zfcp_qdio_sbals_from_sg(fsf_req,
- SBAL_FLAGS0_TYPE_WRITE_READ,
- ct->resp, ct->resp_count,
- ZFCP_MAX_SBALS_PER_CT_REQ);
- if (bytes <= 0) {
- ZFCP_LOG_INFO("error: creation of CT request failed "
- "on adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- if (bytes == 0)
- ret = -ENOMEM;
- else
- ret = bytes;
-
- goto failed_send;
- }
- fsf_req->qtcb->bottom.support.resp_buf_length = bytes;
- } else {
- /* reject send generic request */
- ZFCP_LOG_INFO(
- "error: microcode does not support chained SBALs,"
- "CT request too big (adapter %s)\n",
- zfcp_get_busid_by_adapter(adapter));
- ret = -EOPNOTSUPP;
- goto failed_send;
- }
-
- /* settings in QTCB */
- fsf_req->qtcb->header.port_handle = port->handle;
- fsf_req->qtcb->bottom.support.service_class =
- ZFCP_FC_SERVICE_CLASS_DEFAULT;
- fsf_req->qtcb->bottom.support.timeout = ct->timeout;
- fsf_req->data = (unsigned long) ct;
-
- zfcp_san_dbf_event_ct_request(fsf_req);
+ spin_lock(&adapter->req_q.lock);
+ if (!atomic_read(&adapter->req_q.count))
+ goto out;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND,
+ req_flags, adapter->pool.fsf_req_abort);
+ if (unlikely(IS_ERR(req)))
+ goto out;
- if (erp_action) {
- erp_action->fsf_req = fsf_req;
- fsf_req->erp_action = erp_action;
- zfcp_erp_start_timer(fsf_req);
- } else
- zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
+ if (unlikely(!(atomic_read(&unit->status) &
+ ZFCP_STATUS_COMMON_UNBLOCKED)))
+ goto out_error_free;
- ret = zfcp_fsf_req_send(fsf_req);
- if (ret) {
- ZFCP_LOG_DEBUG("error: initiation of CT request failed "
- "(adapter %s, port 0x%016Lx)\n",
- zfcp_get_busid_by_adapter(adapter), port->wwpn);
- goto failed_send;
- }
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
+ sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
- ZFCP_LOG_DEBUG("CT request initiated (adapter %s, port 0x%016Lx)\n",
- zfcp_get_busid_by_adapter(adapter), port->wwpn);
- goto out;
+ req->data = unit;
+ req->handler = zfcp_fsf_abort_fcp_command_handler;
+ req->qtcb->header.lun_handle = unit->handle;
+ req->qtcb->header.port_handle = unit->port->handle;
+ req->qtcb->bottom.support.req_handle = (u64) old_req_id;
- failed_send:
- zfcp_fsf_req_free(fsf_req);
- if (erp_action != NULL) {
- erp_action->fsf_req = NULL;
- }
- failed_req:
- out:
- write_unlock_irqrestore(&adapter->request_queue.queue_lock,
- lock_flags);
- return ret;
+ zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
+ if (!zfcp_fsf_req_send(req))
+ goto out;
+
+out_error_free:
+ zfcp_fsf_req_free(req);
+ req = NULL;
+out:
+ spin_unlock(&adapter->req_q.lock);
+ return req;
}
-/**
- * zfcp_fsf_send_ct_handler - handler for Generic Service requests
- * @fsf_req: pointer to struct zfcp_fsf_req
- *
- * Data specific for the Generic Service request is passed using
- * fsf_req->data. There we find the pointer to struct zfcp_send_ct.
- * Usually a specific handler for the CT request is called which is
- * found in this structure.
- */
-static int
-zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *fsf_req)
+static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
{
- struct zfcp_port *port;
- struct zfcp_adapter *adapter;
- struct zfcp_send_ct *send_ct;
- struct fsf_qtcb_header *header;
- struct fsf_qtcb_bottom_support *bottom;
- int retval = -EINVAL;
- u16 subtable, rule, counter;
+ struct zfcp_adapter *adapter = req->adapter;
+ struct zfcp_send_ct *send_ct = req->data;
+ struct zfcp_port *port = send_ct->port;
+ struct fsf_qtcb_header *header = &req->qtcb->header;
- adapter = fsf_req->adapter;
- send_ct = (struct zfcp_send_ct *) fsf_req->data;
- port = send_ct->port;
- header = &fsf_req->qtcb->header;
- bottom = &fsf_req->qtcb->bottom.support;
+ send_ct->status = -EINVAL;
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
goto skip_fsfstatus;
- /* evaluate FSF status in QTCB */
switch (header->fsf_status) {
-
case FSF_GOOD:
- zfcp_san_dbf_event_ct_response(fsf_req);
- retval = 0;
+ zfcp_san_dbf_event_ct_response(req);
+ send_ct->status = 0;
break;
-
case FSF_SERVICE_CLASS_NOT_SUPPORTED:
- ZFCP_LOG_INFO("error: adapter %s does not support fc "
- "class %d.\n",
- zfcp_get_busid_by_port(port),
- ZFCP_FC_SERVICE_CLASS_DEFAULT);
- /* stop operation for this adapter */
- zfcp_erp_adapter_shutdown(adapter, 0, 123, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_fsf_class_not_supp(req);
break;
-
case FSF_ADAPTER_STATUS_AVAILABLE:
switch (header->fsf_status_qual.word[0]){
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
- /* reopening link to port */
zfcp_test_link(port);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
- /* ERP strategy will escalate */
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
- default:
- ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x "
- "arrived.\n",
- header->fsf_status_qual.word[0]);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
}
break;
-
case FSF_ACCESS_DENIED:
- ZFCP_LOG_NORMAL("access denied, cannot send generic service "
- "command (adapter %s, port d_id=0x%06x)\n",
- zfcp_get_busid_by_port(port), port->d_id);
- for (counter = 0; counter < 2; counter++) {
- subtable = header->fsf_status_qual.halfword[counter * 2];
- rule = header->fsf_status_qual.halfword[counter * 2 + 1];
- switch (subtable) {
- case FSF_SQ_CFDC_SUBTABLE_OS:
- case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
- case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
- case FSF_SQ_CFDC_SUBTABLE_LUN:
- ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
- zfcp_act_subtable_type[subtable], rule);
- break;
- }
- }
- zfcp_erp_port_access_denied(port, 55, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_GENERIC_COMMAND_REJECTED:
- ZFCP_LOG_INFO("generic service command rejected "
- "(adapter %s, port d_id=0x%06x)\n",
- zfcp_get_busid_by_port(port), port->d_id);
- ZFCP_LOG_INFO("status qualifier:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO,
- (char *) &header->fsf_status_qual,
- sizeof (union fsf_status_qual));
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_PORT_HANDLE_NOT_VALID:
- ZFCP_LOG_DEBUG("Temporary port identifier 0x%x for port "
- "0x%016Lx on adapter %s invalid. This may "
- "happen occasionally.\n", port->handle,
- port->wwpn, zfcp_get_busid_by_port(port));
- ZFCP_LOG_INFO("status qualifier:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO,
- (char *) &header->fsf_status_qual,
- sizeof (union fsf_status_qual));
- zfcp_erp_adapter_reopen(adapter, 0, 106, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_fsf_access_denied_port(req, port);
break;
-
case FSF_PORT_BOXED:
- ZFCP_LOG_INFO("port needs to be reopened "
- "(adapter %s, port d_id=0x%06x)\n",
- zfcp_get_busid_by_port(port), port->d_id);
- zfcp_erp_port_boxed(port, 49, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR
- | ZFCP_STATUS_FSFREQ_RETRY;
+ zfcp_erp_port_boxed(port, 49, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR |
+ ZFCP_STATUS_FSFREQ_RETRY;
break;
-
- /* following states should never occure, all cases avoided
- in zfcp_fsf_send_ct - but who knows ... */
+ case FSF_PORT_HANDLE_NOT_VALID:
+ zfcp_erp_adapter_reopen(adapter, 0, 106, req);
+ case FSF_GENERIC_COMMAND_REJECTED:
case FSF_PAYLOAD_SIZE_MISMATCH:
- ZFCP_LOG_INFO("payload size mismatch (adapter: %s, "
- "req_buf_length=%d, resp_buf_length=%d)\n",
- zfcp_get_busid_by_adapter(adapter),
- bottom->req_buf_length, bottom->resp_buf_length);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
case FSF_REQUEST_SIZE_TOO_LARGE:
- ZFCP_LOG_INFO("request size too large (adapter: %s, "
- "req_buf_length=%d)\n",
- zfcp_get_busid_by_adapter(adapter),
- bottom->req_buf_length);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
case FSF_RESPONSE_SIZE_TOO_LARGE:
- ZFCP_LOG_INFO("response size too large (adapter: %s, "
- "resp_buf_length=%d)\n",
- zfcp_get_busid_by_adapter(adapter),
- bottom->resp_buf_length);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
case FSF_SBAL_MISMATCH:
- ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, "
- "resp_buf_length=%d)\n",
- zfcp_get_busid_by_adapter(adapter),
- bottom->req_buf_length, bottom->resp_buf_length);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- default:
- ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
- "(debug info 0x%x)\n", header->fsf_status);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
}
skip_fsfstatus:
- send_ct->status = retval;
-
- if (send_ct->handler != NULL)
+ if (send_ct->handler)
send_ct->handler(send_ct->handler_data);
+}
- return retval;
+static int zfcp_fsf_setup_sbals(struct zfcp_fsf_req *req,
+ struct scatterlist *sg_req,
+ struct scatterlist *sg_resp, int max_sbals)
+{
+ int bytes;
+
+ bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ,
+ sg_req, max_sbals);
+ if (bytes <= 0)
+ return -ENOMEM;
+ req->qtcb->bottom.support.req_buf_length = bytes;
+ req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
+
+ bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ,
+ sg_resp, max_sbals);
+ if (bytes <= 0)
+ return -ENOMEM;
+ req->qtcb->bottom.support.resp_buf_length = bytes;
+
+ return 0;
}
/**
- * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
- * @els: pointer to struct zfcp_send_els which contains all needed data for
- * the command.
+ * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
+ * @ct: pointer to struct zfcp_send_ct with data for request
+ * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
+ * @erp_action: if non-null the Generic Service request sent within ERP
*/
-int
-zfcp_fsf_send_els(struct zfcp_send_els *els)
+int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool,
+ struct zfcp_erp_action *erp_action)
{
- volatile struct qdio_buffer_element *sbale;
- struct zfcp_fsf_req *fsf_req;
- u32 d_id;
- struct zfcp_adapter *adapter;
- unsigned long lock_flags;
- int bytes;
- int ret = 0;
-
- d_id = els->d_id;
- adapter = els->adapter;
+ struct zfcp_port *port = ct->port;
+ struct zfcp_adapter *adapter = port->adapter;
+ struct zfcp_fsf_req *req;
+ int ret = -EIO;
- ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS,
- ZFCP_REQ_AUTO_CLEANUP,
- NULL, &lock_flags, &fsf_req);
- if (ret < 0) {
- ZFCP_LOG_INFO("error: creation of ELS request failed "
- "(adapter %s, port d_id: 0x%06x)\n",
- zfcp_get_busid_by_adapter(adapter), d_id);
- goto failed_req;
- }
+ spin_lock(&adapter->req_q.lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
- if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
- &els->port->status))) {
- ret = -EBUSY;
- goto port_blocked;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC,
+ ZFCP_REQ_AUTO_CLEANUP, pool);
+ if (unlikely(IS_ERR(req))) {
+ ret = PTR_ERR(req);
+ goto out;
}
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
- if (zfcp_use_one_sbal(els->req, els->req_count,
- els->resp, els->resp_count)){
- /* both request buffer and response buffer
- fit into one sbale each */
- sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ;
- sbale[2].addr = zfcp_sg_to_address(&els->req[0]);
- sbale[2].length = els->req[0].length;
- sbale[3].addr = zfcp_sg_to_address(&els->resp[0]);
- sbale[3].length = els->resp[0].length;
- sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY;
- } else if (adapter->adapter_features &
- FSF_FEATURE_ELS_CT_CHAINED_SBALS) {
- /* try to use chained SBALs */
- bytes = zfcp_qdio_sbals_from_sg(fsf_req,
- SBAL_FLAGS0_TYPE_WRITE_READ,
- els->req, els->req_count,
- ZFCP_MAX_SBALS_PER_ELS_REQ);
- if (bytes <= 0) {
- ZFCP_LOG_INFO("error: creation of ELS request failed "
- "(adapter %s, port d_id: 0x%06x)\n",
- zfcp_get_busid_by_adapter(adapter), d_id);
- if (bytes == 0) {
- ret = -ENOMEM;
- } else {
- ret = bytes;
- }
- goto failed_send;
- }
- fsf_req->qtcb->bottom.support.req_buf_length = bytes;
- fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
- bytes = zfcp_qdio_sbals_from_sg(fsf_req,
- SBAL_FLAGS0_TYPE_WRITE_READ,
- els->resp, els->resp_count,
- ZFCP_MAX_SBALS_PER_ELS_REQ);
- if (bytes <= 0) {
- ZFCP_LOG_INFO("error: creation of ELS request failed "
- "(adapter %s, port d_id: 0x%06x)\n",
- zfcp_get_busid_by_adapter(adapter), d_id);
- if (bytes == 0) {
- ret = -ENOMEM;
- } else {
- ret = bytes;
- }
- goto failed_send;
- }
- fsf_req->qtcb->bottom.support.resp_buf_length = bytes;
- } else {
- /* reject request */
- ZFCP_LOG_INFO("error: microcode does not support chained SBALs"
- ", ELS request too big (adapter %s, "
- "port d_id: 0x%06x)\n",
- zfcp_get_busid_by_adapter(adapter), d_id);
- ret = -EOPNOTSUPP;
- goto failed_send;
- }
-
- /* settings in QTCB */
- fsf_req->qtcb->bottom.support.d_id = d_id;
- fsf_req->qtcb->bottom.support.service_class =
- ZFCP_FC_SERVICE_CLASS_DEFAULT;
- fsf_req->qtcb->bottom.support.timeout = ZFCP_ELS_TIMEOUT;
- fsf_req->data = (unsigned long) els;
-
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
-
- zfcp_san_dbf_event_els_request(fsf_req);
-
- zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
- ret = zfcp_fsf_req_send(fsf_req);
- if (ret) {
- ZFCP_LOG_DEBUG("error: initiation of ELS request failed "
- "(adapter %s, port d_id: 0x%06x)\n",
- zfcp_get_busid_by_adapter(adapter), d_id);
+ ret = zfcp_fsf_setup_sbals(req, ct->req, ct->resp,
+ FSF_MAX_SBALS_PER_REQ);
+ if (ret)
goto failed_send;
- }
- ZFCP_LOG_DEBUG("ELS request initiated (adapter %s, port d_id: "
- "0x%06x)\n", zfcp_get_busid_by_adapter(adapter), d_id);
- goto out;
+ req->handler = zfcp_fsf_send_ct_handler;
+ req->qtcb->header.port_handle = port->handle;
+ req->qtcb->bottom.support.service_class = FSF_CLASS_3;
+ req->qtcb->bottom.support.timeout = ct->timeout;
+ req->data = ct;
- port_blocked:
- failed_send:
- zfcp_fsf_req_free(fsf_req);
+ zfcp_san_dbf_event_ct_request(req);
- failed_req:
- out:
- write_unlock_irqrestore(&adapter->request_queue.queue_lock,
- lock_flags);
+ if (erp_action) {
+ erp_action->fsf_req = req;
+ req->erp_action = erp_action;
+ zfcp_fsf_start_erp_timer(req);
+ } else
+ zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
+
+ ret = zfcp_fsf_req_send(req);
+ if (ret)
+ goto failed_send;
+
+ goto out;
- return ret;
+failed_send:
+ zfcp_fsf_req_free(req);
+ if (erp_action)
+ erp_action->fsf_req = NULL;
+out:
+ spin_unlock(&adapter->req_q.lock);
+ return ret;
}
-/**
- * zfcp_fsf_send_els_handler - handler for ELS commands
- * @fsf_req: pointer to struct zfcp_fsf_req
- *
- * Data specific for the ELS command is passed using
- * fsf_req->data. There we find the pointer to struct zfcp_send_els.
- * Usually a specific handler for the ELS command is called which is
- * found in this structure.
- */
-static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *fsf_req)
+static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
{
- struct zfcp_adapter *adapter;
- struct zfcp_port *port;
- u32 d_id;
- struct fsf_qtcb_header *header;
- struct fsf_qtcb_bottom_support *bottom;
- struct zfcp_send_els *send_els;
- int retval = -EINVAL;
- u16 subtable, rule, counter;
-
- send_els = (struct zfcp_send_els *) fsf_req->data;
- adapter = send_els->adapter;
- port = send_els->port;
- d_id = send_els->d_id;
- header = &fsf_req->qtcb->header;
- bottom = &fsf_req->qtcb->bottom.support;
-
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ struct zfcp_send_els *send_els = req->data;
+ struct zfcp_port *port = send_els->port;
+ struct fsf_qtcb_header *header = &req->qtcb->header;
+
+ send_els->status = -EINVAL;
+
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
goto skip_fsfstatus;
switch (header->fsf_status) {
-
case FSF_GOOD:
- zfcp_san_dbf_event_els_response(fsf_req);
- retval = 0;
+ zfcp_san_dbf_event_els_response(req);
+ send_els->status = 0;
break;
-
case FSF_SERVICE_CLASS_NOT_SUPPORTED:
- ZFCP_LOG_INFO("error: adapter %s does not support fc "
- "class %d.\n",
- zfcp_get_busid_by_adapter(adapter),
- ZFCP_FC_SERVICE_CLASS_DEFAULT);
- /* stop operation for this adapter */
- zfcp_erp_adapter_shutdown(adapter, 0, 124, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_fsf_class_not_supp(req);
break;
-
case FSF_ADAPTER_STATUS_AVAILABLE:
switch (header->fsf_status_qual.word[0]){
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
if (port && (send_els->ls_code != ZFCP_LS_ADISC))
zfcp_test_link(port);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
+ /*fall through */
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- retval =
- zfcp_handle_els_rjt(header->fsf_status_qual.word[1],
- (struct zfcp_ls_rjt_par *)
- &header->fsf_status_qual.word[2]);
- break;
case FSF_SQ_RETRY_IF_POSSIBLE:
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
- default:
- ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x\n",
- header->fsf_status_qual.word[0]);
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO,
- (char*)header->fsf_status_qual.word, 16);
}
break;
-
case FSF_ELS_COMMAND_REJECTED:
- ZFCP_LOG_INFO("ELS has been rejected because command filter "
- "prohibited sending "
- "(adapter: %s, port d_id: 0x%06x)\n",
- zfcp_get_busid_by_adapter(adapter), d_id);
-
- break;
-
case FSF_PAYLOAD_SIZE_MISMATCH:
- ZFCP_LOG_INFO(
- "ELS request size and ELS response size must be either "
- "both 0, or both greater than 0 "
- "(adapter: %s, req_buf_length=%d resp_buf_length=%d)\n",
- zfcp_get_busid_by_adapter(adapter),
- bottom->req_buf_length,
- bottom->resp_buf_length);
- break;
-
case FSF_REQUEST_SIZE_TOO_LARGE:
- ZFCP_LOG_INFO(
- "Length of the ELS request buffer, "
- "specified in QTCB bottom, "
- "exceeds the size of the buffers "
- "that have been allocated for ELS request data "
- "(adapter: %s, req_buf_length=%d)\n",
- zfcp_get_busid_by_adapter(adapter),
- bottom->req_buf_length);
- break;
-
case FSF_RESPONSE_SIZE_TOO_LARGE:
- ZFCP_LOG_INFO(
- "Length of the ELS response buffer, "
- "specified in QTCB bottom, "
- "exceeds the size of the buffers "
- "that have been allocated for ELS response data "
- "(adapter: %s, resp_buf_length=%d)\n",
- zfcp_get_busid_by_adapter(adapter),
- bottom->resp_buf_length);
- break;
-
- case FSF_SBAL_MISMATCH:
- /* should never occure, avoided in zfcp_fsf_send_els */
- ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, "
- "resp_buf_length=%d)\n",
- zfcp_get_busid_by_adapter(adapter),
- bottom->req_buf_length, bottom->resp_buf_length);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
-
case FSF_ACCESS_DENIED:
- ZFCP_LOG_NORMAL("access denied, cannot send ELS command "
- "(adapter %s, port d_id=0x%06x)\n",
- zfcp_get_busid_by_adapter(adapter), d_id);
- for (counter = 0; counter < 2; counter++) {
- subtable = header->fsf_status_qual.halfword[counter * 2];
- rule = header->fsf_status_qual.halfword[counter * 2 + 1];
- switch (subtable) {
- case FSF_SQ_CFDC_SUBTABLE_OS:
- case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
- case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
- case FSF_SQ_CFDC_SUBTABLE_LUN:
- ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
- zfcp_act_subtable_type[subtable], rule);
- break;
- }
- }
- if (port != NULL)
- zfcp_erp_port_access_denied(port, 56, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_fsf_access_denied_port(req, port);
break;
-
+ case FSF_SBAL_MISMATCH:
+ /* should never occure, avoided in zfcp_fsf_send_els */
+ /* fall through */
default:
- ZFCP_LOG_NORMAL(
- "bug: An unknown FSF Status was presented "
- "(adapter: %s, fsf_status=0x%08x)\n",
- zfcp_get_busid_by_adapter(adapter),
- header->fsf_status);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
}
-
skip_fsfstatus:
- send_els->status = retval;
-
if (send_els->handler)
send_els->handler(send_els->handler_data);
+}
- return retval;
+/**
+ * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
+ * @els: pointer to struct zfcp_send_els with data for the command
+ */
+int zfcp_fsf_send_els(struct zfcp_send_els *els)
+{
+ struct zfcp_fsf_req *req;
+ struct zfcp_adapter *adapter = els->adapter;
+ struct fsf_qtcb_bottom_support *bottom;
+ int ret = -EIO;
+
+ if (unlikely(!(atomic_read(&els->port->status) &
+ ZFCP_STATUS_COMMON_UNBLOCKED)))
+ return -EBUSY;
+
+ spin_lock(&adapter->req_q.lock);
+ if (!atomic_read(&adapter->req_q.count))
+ goto out;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS,
+ ZFCP_REQ_AUTO_CLEANUP, NULL);
+ if (unlikely(IS_ERR(req))) {
+ ret = PTR_ERR(req);
+ goto out;
+ }
+
+ ret = zfcp_fsf_setup_sbals(req, els->req, els->resp,
+ FSF_MAX_SBALS_PER_ELS_REQ);
+ if (ret)
+ goto failed_send;
+
+ bottom = &req->qtcb->bottom.support;
+ req->handler = zfcp_fsf_send_els_handler;
+ bottom->d_id = els->d_id;
+ bottom->service_class = FSF_CLASS_3;
+ bottom->timeout = 2 * R_A_TOV;
+ req->data = els;
+
+ zfcp_san_dbf_event_els_request(req);
+
+ zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
+ ret = zfcp_fsf_req_send(req);
+ if (ret)
+ goto failed_send;
+
+ goto out;
+
+failed_send:
+ zfcp_fsf_req_free(req);
+out:
+ spin_unlock(&adapter->req_q.lock);
+ return ret;
}
-int
-zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
+int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
{
volatile struct qdio_buffer_element *sbale;
- struct zfcp_fsf_req *fsf_req;
+ struct zfcp_fsf_req *req;
struct zfcp_adapter *adapter = erp_action->adapter;
- unsigned long lock_flags;
- int retval;
-
- /* setup new FSF request */
- retval = zfcp_fsf_req_create(adapter,
- FSF_QTCB_EXCHANGE_CONFIG_DATA,
- ZFCP_REQ_AUTO_CLEANUP,
- adapter->pool.fsf_req_erp,
- &lock_flags, &fsf_req);
- if (retval) {
- ZFCP_LOG_INFO("error: Could not create exchange configuration "
- "data request for adapter %s.\n",
- zfcp_get_busid_by_adapter(adapter));
- write_unlock_irqrestore(&adapter->request_queue.queue_lock,
- lock_flags);
- return retval;
+ int retval = -EIO;
+
+ spin_lock(&adapter->req_q.lock);
+ if (!atomic_read(&adapter->req_q.count))
+ goto out;
+ req = zfcp_fsf_req_create(adapter,
+ FSF_QTCB_EXCHANGE_CONFIG_DATA,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (unlikely(IS_ERR(req))) {
+ retval = PTR_ERR(req);
+ goto out;
}
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
+ sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
- fsf_req->qtcb->bottom.config.feature_selection =
+ req->qtcb->bottom.config.feature_selection =
FSF_FEATURE_CFDC |
FSF_FEATURE_LUN_SHARING |
FSF_FEATURE_NOTIFICATION_LOST |
FSF_FEATURE_UPDATE_ALERT;
- fsf_req->erp_action = erp_action;
- erp_action->fsf_req = fsf_req;
+ req->erp_action = erp_action;
+ req->handler = zfcp_fsf_exchange_config_data_handler;
+ erp_action->fsf_req = req;
- zfcp_erp_start_timer(fsf_req);
- retval = zfcp_fsf_req_send(fsf_req);
- write_unlock_irqrestore(&adapter->request_queue.queue_lock,
- lock_flags);
+ zfcp_fsf_start_erp_timer(req);
+ retval = zfcp_fsf_req_send(req);
if (retval) {
- ZFCP_LOG_INFO("error: Could not send exchange configuration "
- "data command on the adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_fsf_req_free(fsf_req);
+ zfcp_fsf_req_free(req);
erp_action->fsf_req = NULL;
}
- else
- ZFCP_LOG_DEBUG("exchange configuration data request initiated "
- "(adapter %s)\n",
- zfcp_get_busid_by_adapter(adapter));
-
+out:
+ spin_unlock(&adapter->req_q.lock);
return retval;
}
-int
-zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter,
- struct fsf_qtcb_bottom_config *data)
+int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter,
+ struct fsf_qtcb_bottom_config *data)
{
volatile struct qdio_buffer_element *sbale;
- struct zfcp_fsf_req *fsf_req;
- unsigned long lock_flags;
- int retval;
-
- /* setup new FSF request */
- retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA,
- ZFCP_WAIT_FOR_SBAL, NULL, &lock_flags,
- &fsf_req);
- if (retval) {
- ZFCP_LOG_INFO("error: Could not create exchange configuration "
- "data request for adapter %s.\n",
- zfcp_get_busid_by_adapter(adapter));
- write_unlock_irqrestore(&adapter->request_queue.queue_lock,
- lock_flags);
- return retval;
+ struct zfcp_fsf_req *req = NULL;
+ int retval = -EIO;
+
+ spin_lock(&adapter->req_q.lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
+
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA,
+ 0, NULL);
+ if (unlikely(IS_ERR(req))) {
+ retval = PTR_ERR(req);
+ goto out;
}
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
+ sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
+ req->handler = zfcp_fsf_exchange_config_data_handler;
- fsf_req->qtcb->bottom.config.feature_selection =
+ req->qtcb->bottom.config.feature_selection =
FSF_FEATURE_CFDC |
FSF_FEATURE_LUN_SHARING |
FSF_FEATURE_NOTIFICATION_LOST |
FSF_FEATURE_UPDATE_ALERT;
if (data)
- fsf_req->data = (unsigned long) data;
+ req->data = data;
- zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
- retval = zfcp_fsf_req_send(fsf_req);
- write_unlock_irqrestore(&adapter->request_queue.queue_lock,
- lock_flags);
- if (retval)
- ZFCP_LOG_INFO("error: Could not send exchange configuration "
- "data command on the adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- else
- wait_event(fsf_req->completion_wq,
- fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
+ zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
+ retval = zfcp_fsf_req_send(req);
+out:
+ spin_unlock(&adapter->req_q.lock);
+ if (!retval)
+ wait_event(req->completion_wq,
+ req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
- zfcp_fsf_req_free(fsf_req);
+ zfcp_fsf_req_free(req);
return retval;
}
/**
- * zfcp_fsf_exchange_config_evaluate
- * @fsf_req: fsf_req which belongs to xchg config data request
- * @xchg_ok: specifies if xchg config data was incomplete or complete (0/1)
- *
- * returns: -EIO on error, 0 otherwise
- */
-static int
-zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok)
-{
- struct fsf_qtcb_bottom_config *bottom;
- struct zfcp_adapter *adapter = fsf_req->adapter;
- struct Scsi_Host *shost = adapter->scsi_host;
-
- bottom = &fsf_req->qtcb->bottom.config;
- ZFCP_LOG_DEBUG("low/high QTCB version 0x%x/0x%x of FSF\n",
- bottom->low_qtcb_version, bottom->high_qtcb_version);
- adapter->fsf_lic_version = bottom->lic_version;
- adapter->adapter_features = bottom->adapter_features;
- adapter->connection_features = bottom->connection_features;
- adapter->peer_wwpn = 0;
- adapter->peer_wwnn = 0;
- adapter->peer_d_id = 0;
-
- if (xchg_ok) {
-
- if (fsf_req->data)
- memcpy((struct fsf_qtcb_bottom_config *) fsf_req->data,
- bottom, sizeof (struct fsf_qtcb_bottom_config));
-
- fc_host_node_name(shost) = bottom->nport_serv_param.wwnn;
- fc_host_port_name(shost) = bottom->nport_serv_param.wwpn;
- fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK;
- fc_host_speed(shost) = bottom->fc_link_speed;
- fc_host_supported_classes(shost) =
- FC_COS_CLASS2 | FC_COS_CLASS3;
- adapter->hydra_version = bottom->adapter_type;
- if (fc_host_permanent_port_name(shost) == -1)
- fc_host_permanent_port_name(shost) =
- fc_host_port_name(shost);
- if (bottom->fc_topology == FSF_TOPO_P2P) {
- adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK;
- adapter->peer_wwpn = bottom->plogi_payload.wwpn;
- adapter->peer_wwnn = bottom->plogi_payload.wwnn;
- fc_host_port_type(shost) = FC_PORTTYPE_PTP;
- } else if (bottom->fc_topology == FSF_TOPO_FABRIC)
- fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
- else if (bottom->fc_topology == FSF_TOPO_AL)
- fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
- else
- fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
- } else {
- fc_host_node_name(shost) = 0;
- fc_host_port_name(shost) = 0;
- fc_host_port_id(shost) = 0;
- fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
- fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
- adapter->hydra_version = 0;
- }
-
- if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
- adapter->hardware_version = bottom->hardware_version;
- memcpy(fc_host_serial_number(shost), bottom->serial_number,
- min(FC_SERIAL_NUMBER_SIZE, 17));
- EBCASC(fc_host_serial_number(shost),
- min(FC_SERIAL_NUMBER_SIZE, 17));
- }
-
- if (fsf_req->erp_action)
- ZFCP_LOG_NORMAL("The adapter %s reported the following "
- "characteristics:\n"
- "WWNN 0x%016Lx, WWPN 0x%016Lx, "
- "S_ID 0x%06x,\n"
- "adapter version 0x%x, "
- "LIC version 0x%x, "
- "FC link speed %d Gb/s\n",
- zfcp_get_busid_by_adapter(adapter),
- (wwn_t) fc_host_node_name(shost),
- (wwn_t) fc_host_port_name(shost),
- fc_host_port_id(shost),
- adapter->hydra_version,
- adapter->fsf_lic_version,
- fc_host_speed(shost));
- if (ZFCP_QTCB_VERSION < bottom->low_qtcb_version) {
- ZFCP_LOG_NORMAL("error: the adapter %s "
- "only supports newer control block "
- "versions in comparison to this device "
- "driver (try updated device driver)\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_erp_adapter_shutdown(adapter, 0, 125, fsf_req);
- return -EIO;
- }
- if (ZFCP_QTCB_VERSION > bottom->high_qtcb_version) {
- ZFCP_LOG_NORMAL("error: the adapter %s "
- "only supports older control block "
- "versions than this device driver uses"
- "(consider a microcode upgrade)\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_erp_adapter_shutdown(adapter, 0, 126, fsf_req);
- return -EIO;
- }
- return 0;
-}
-
-/**
- * function: zfcp_fsf_exchange_config_data_handler
- *
- * purpose: is called for finished Exchange Configuration Data command
- *
- * returns:
- */
-static int
-zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *fsf_req)
-{
- struct fsf_qtcb_bottom_config *bottom;
- struct zfcp_adapter *adapter = fsf_req->adapter;
- struct fsf_qtcb *qtcb = fsf_req->qtcb;
-
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
- return -EIO;
-
- switch (qtcb->header.fsf_status) {
-
- case FSF_GOOD:
- if (zfcp_fsf_exchange_config_evaluate(fsf_req, 1))
- return -EIO;
-
- switch (fc_host_port_type(adapter->scsi_host)) {
- case FC_PORTTYPE_PTP:
- ZFCP_LOG_NORMAL("Point-to-Point fibrechannel "
- "configuration detected at adapter %s\n"
- "Peer WWNN 0x%016llx, "
- "peer WWPN 0x%016llx, "
- "peer d_id 0x%06x\n",
- zfcp_get_busid_by_adapter(adapter),
- adapter->peer_wwnn,
- adapter->peer_wwpn,
- adapter->peer_d_id);
- break;
- case FC_PORTTYPE_NLPORT:
- ZFCP_LOG_NORMAL("error: Arbitrated loop fibrechannel "
- "topology detected at adapter %s "
- "unsupported, shutting down adapter\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_erp_adapter_shutdown(adapter, 0, 127, fsf_req);
- return -EIO;
- case FC_PORTTYPE_NPORT:
- if (fsf_req->erp_action)
- ZFCP_LOG_NORMAL("Switched fabric fibrechannel "
- "network detected at adapter "
- "%s.\n",
- zfcp_get_busid_by_adapter(adapter));
- break;
- default:
- ZFCP_LOG_NORMAL("bug: The fibrechannel topology "
- "reported by the exchange "
- "configuration command for "
- "the adapter %s is not "
- "of a type known to the zfcp "
- "driver, shutting down adapter\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_erp_adapter_shutdown(adapter, 0, 128, fsf_req);
- return -EIO;
- }
- bottom = &qtcb->bottom.config;
- if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
- ZFCP_LOG_NORMAL("bug: Maximum QTCB size (%d bytes) "
- "allowed by the adapter %s "
- "is lower than the minimum "
- "required by the driver (%ld bytes).\n",
- bottom->max_qtcb_size,
- zfcp_get_busid_by_adapter(adapter),
- sizeof(struct fsf_qtcb));
- zfcp_erp_adapter_shutdown(adapter, 0, 129, fsf_req);
- return -EIO;
- }
- atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
- &adapter->status);
- break;
- case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
- if (zfcp_fsf_exchange_config_evaluate(fsf_req, 0))
- return -EIO;
-
- atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
- &adapter->status);
-
- zfcp_fsf_link_down_info_eval(fsf_req, 42,
- &qtcb->header.fsf_status_qual.link_down_info);
- break;
- default:
- zfcp_erp_adapter_shutdown(adapter, 0, 130, fsf_req);
- return -EIO;
- }
- return 0;
-}
-
-/**
* zfcp_fsf_exchange_port_data - request information about local port
* @erp_action: ERP action for the adapter for which port data is requested
+ * Returns: 0 on success, error otherwise
*/
-int
-zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
+int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
{
volatile struct qdio_buffer_element *sbale;
- struct zfcp_fsf_req *fsf_req;
+ struct zfcp_fsf_req *req;
struct zfcp_adapter *adapter = erp_action->adapter;
- unsigned long lock_flags;
- int retval;
+ int retval = -EIO;
- if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) {
- ZFCP_LOG_INFO("error: exchange port data "
- "command not supported by adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
+ if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
return -EOPNOTSUPP;
- }
- /* setup new FSF request */
- retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA,
- ZFCP_REQ_AUTO_CLEANUP,
- adapter->pool.fsf_req_erp,
- &lock_flags, &fsf_req);
- if (retval) {
- ZFCP_LOG_INFO("error: Out of resources. Could not create an "
- "exchange port data request for "
- "the adapter %s.\n",
- zfcp_get_busid_by_adapter(adapter));
- write_unlock_irqrestore(&adapter->request_queue.queue_lock,
- lock_flags);
- return retval;
+ spin_lock(&adapter->req_q.lock);
+ if (!atomic_read(&adapter->req_q.count))
+ goto out;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (unlikely(IS_ERR(req))) {
+ retval = PTR_ERR(req);
+ goto out;
}
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
+ sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
- erp_action->fsf_req = fsf_req;
- fsf_req->erp_action = erp_action;
- zfcp_erp_start_timer(fsf_req);
-
- retval = zfcp_fsf_req_send(fsf_req);
- write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
+ req->handler = zfcp_fsf_exchange_port_data_handler;
+ req->erp_action = erp_action;
+ erp_action->fsf_req = req;
+ zfcp_fsf_start_erp_timer(req);
+ retval = zfcp_fsf_req_send(req);
if (retval) {
- ZFCP_LOG_INFO("error: Could not send an exchange port data "
- "command on the adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_fsf_req_free(fsf_req);
+ zfcp_fsf_req_free(req);
erp_action->fsf_req = NULL;
}
- else
- ZFCP_LOG_DEBUG("exchange port data request initiated "
- "(adapter %s)\n",
- zfcp_get_busid_by_adapter(adapter));
+out:
+ spin_unlock(&adapter->req_q.lock);
return retval;
}
-
/**
* zfcp_fsf_exchange_port_data_sync - request information about local port
- * and wait until information is ready
+ * @adapter: pointer to struct zfcp_adapter
+ * @data: pointer to struct fsf_qtcb_bottom_port
+ * Returns: 0 on success, error otherwise
*/
-int
-zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter,
- struct fsf_qtcb_bottom_port *data)
+int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter,
+ struct fsf_qtcb_bottom_port *data)
{
volatile struct qdio_buffer_element *sbale;
- struct zfcp_fsf_req *fsf_req;
- unsigned long lock_flags;
- int retval;
-
- if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) {
- ZFCP_LOG_INFO("error: exchange port data "
- "command not supported by adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
+ struct zfcp_fsf_req *req = NULL;
+ int retval = -EIO;
+
+ if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
return -EOPNOTSUPP;
- }
- /* setup new FSF request */
- retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA,
- 0, NULL, &lock_flags, &fsf_req);
- if (retval) {
- ZFCP_LOG_INFO("error: Out of resources. Could not create an "
- "exchange port data request for "
- "the adapter %s.\n",
- zfcp_get_busid_by_adapter(adapter));
- write_unlock_irqrestore(&adapter->request_queue.queue_lock,
- lock_flags);
- return retval;
+ spin_lock(&adapter->req_q.lock);
+ if (!atomic_read(&adapter->req_q.count))
+ goto out;
+
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0,
+ NULL);
+ if (unlikely(IS_ERR(req))) {
+ retval = PTR_ERR(req);
+ goto out;
}
if (data)
- fsf_req->data = (unsigned long) data;
+ req->data = data;
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
+ sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
- zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
- retval = zfcp_fsf_req_send(fsf_req);
- write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
-
- if (retval)
- ZFCP_LOG_INFO("error: Could not send an exchange port data "
- "command on the adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- else
- wait_event(fsf_req->completion_wq,
- fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
-
- zfcp_fsf_req_free(fsf_req);
-
- return retval;
-}
-
-/**
- * zfcp_fsf_exchange_port_evaluate
- * @fsf_req: fsf_req which belongs to xchg port data request
- * @xchg_ok: specifies if xchg port data was incomplete or complete (0/1)
- */
-static void
-zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok)
-{
- struct zfcp_adapter *adapter;
- struct fsf_qtcb_bottom_port *bottom;
- struct Scsi_Host *shost;
-
- adapter = fsf_req->adapter;
- bottom = &fsf_req->qtcb->bottom.port;
- shost = adapter->scsi_host;
-
- if (fsf_req->data)
- memcpy((struct fsf_qtcb_bottom_port*) fsf_req->data, bottom,
- sizeof(struct fsf_qtcb_bottom_port));
-
- if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
- fc_host_permanent_port_name(shost) = bottom->wwpn;
- else
- fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
- fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
- fc_host_supported_speeds(shost) = bottom->supported_speed;
-}
-
-/**
- * zfcp_fsf_exchange_port_data_handler - handler for exchange_port_data request
- * @fsf_req: pointer to struct zfcp_fsf_req
- */
-static void
-zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *fsf_req)
-{
- struct zfcp_adapter *adapter;
- struct fsf_qtcb *qtcb;
-
- adapter = fsf_req->adapter;
- qtcb = fsf_req->qtcb;
-
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
- return;
-
- switch (qtcb->header.fsf_status) {
- case FSF_GOOD:
- zfcp_fsf_exchange_port_evaluate(fsf_req, 1);
- atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
- break;
- case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
- zfcp_fsf_exchange_port_evaluate(fsf_req, 0);
- atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
- zfcp_fsf_link_down_info_eval(fsf_req, 43,
- &qtcb->header.fsf_status_qual.link_down_info);
- break;
- }
-}
-
-
-/*
- * function: zfcp_fsf_open_port
- *
- * purpose:
- *
- * returns: address of initiated FSF request
- * NULL - request could not be initiated
- */
-int
-zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
-{
- volatile struct qdio_buffer_element *sbale;
- struct zfcp_fsf_req *fsf_req;
- unsigned long lock_flags;
- int retval = 0;
-
- /* setup new FSF request */
- retval = zfcp_fsf_req_create(erp_action->adapter,
- FSF_QTCB_OPEN_PORT_WITH_DID,
- ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
- erp_action->adapter->pool.fsf_req_erp,
- &lock_flags, &fsf_req);
- if (retval < 0) {
- ZFCP_LOG_INFO("error: Could not create open port request "
- "for port 0x%016Lx on adapter %s.\n",
- erp_action->port->wwpn,
- zfcp_get_busid_by_adapter(erp_action->adapter));
- goto out;
- }
-
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
- sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
- sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
-
- fsf_req->qtcb->bottom.support.d_id = erp_action->port->d_id;
- atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status);
- fsf_req->data = (unsigned long) erp_action->port;
- fsf_req->erp_action = erp_action;
- erp_action->fsf_req = fsf_req;
-
- zfcp_erp_start_timer(fsf_req);
- retval = zfcp_fsf_req_send(fsf_req);
- if (retval) {
- ZFCP_LOG_INFO("error: Could not send open port request for "
- "port 0x%016Lx on adapter %s.\n",
- erp_action->port->wwpn,
- zfcp_get_busid_by_adapter(erp_action->adapter));
- zfcp_fsf_req_free(fsf_req);
- erp_action->fsf_req = NULL;
- goto out;
- }
+ req->handler = zfcp_fsf_exchange_port_data_handler;
+ zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
+ retval = zfcp_fsf_req_send(req);
+out:
+ spin_unlock(&adapter->req_q.lock);
+ if (!retval)
+ wait_event(req->completion_wq,
+ req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
+ zfcp_fsf_req_free(req);
- ZFCP_LOG_DEBUG("open port request initiated "
- "(adapter %s, port 0x%016Lx)\n",
- zfcp_get_busid_by_adapter(erp_action->adapter),
- erp_action->port->wwpn);
- out:
- write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
- lock_flags);
return retval;
}
-/*
- * function: zfcp_fsf_open_port_handler
- *
- * purpose: is called for finished Open Port command
- *
- * returns:
- */
-static int
-zfcp_fsf_open_port_handler(struct zfcp_fsf_req *fsf_req)
+static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
{
- int retval = -EINVAL;
- struct zfcp_port *port;
+ struct zfcp_port *port = req->data;
+ struct fsf_qtcb_header *header = &req->qtcb->header;
struct fsf_plogi *plogi;
- struct fsf_qtcb_header *header;
- u16 subtable, rule, counter;
- port = (struct zfcp_port *) fsf_req->data;
- header = &fsf_req->qtcb->header;
-
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
- /* don't change port status in our bookkeeping */
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
goto skip_fsfstatus;
- }
- /* evaluate FSF status in QTCB */
switch (header->fsf_status) {
-
case FSF_PORT_ALREADY_OPEN:
- ZFCP_LOG_NORMAL("bug: remote port 0x%016Lx on adapter %s "
- "is already open.\n",
- port->wwpn, zfcp_get_busid_by_port(port));
- /*
- * This is a bug, however operation should continue normally
- * if it is simply ignored
- */
break;
-
case FSF_ACCESS_DENIED:
- ZFCP_LOG_NORMAL("Access denied, cannot open port 0x%016Lx "
- "on adapter %s\n",
- port->wwpn, zfcp_get_busid_by_port(port));
- for (counter = 0; counter < 2; counter++) {
- subtable = header->fsf_status_qual.halfword[counter * 2];
- rule = header->fsf_status_qual.halfword[counter * 2 + 1];
- switch (subtable) {
- case FSF_SQ_CFDC_SUBTABLE_OS:
- case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
- case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
- case FSF_SQ_CFDC_SUBTABLE_LUN:
- ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
- zfcp_act_subtable_type[subtable], rule);
- break;
- }
- }
- zfcp_erp_port_access_denied(port, 57, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_fsf_access_denied_port(req, port);
break;
-
case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
- ZFCP_LOG_INFO("error: The FSF adapter is out of resources. "
- "The remote port 0x%016Lx on adapter %s "
- "could not be opened. Disabling it.\n",
- port->wwpn, zfcp_get_busid_by_port(port));
- zfcp_erp_port_failed(port, 31, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The adapter is out of resources. The remote port "
+ "0x%016Lx could not be opened, disabling it.\n",
+ port->wwpn);
+ zfcp_erp_port_failed(port, 31, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
-
case FSF_ADAPTER_STATUS_AVAILABLE:
switch (header->fsf_status_qual.word[0]) {
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
- /* ERP strategy will escalate */
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
- /* ERP strategy will escalate */
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SQ_NO_RETRY_POSSIBLE:
- ZFCP_LOG_NORMAL("The remote port 0x%016Lx on "
- "adapter %s could not be opened. "
- "Disabling it.\n",
- port->wwpn,
- zfcp_get_busid_by_port(port));
- zfcp_erp_port_failed(port, 32, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
- default:
- ZFCP_LOG_NORMAL
- ("bug: Wrong status qualifier 0x%x arrived.\n",
- header->fsf_status_qual.word[0]);
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The remote port 0x%016Lx could not be "
+ "opened. Disabling it.\n", port->wwpn);
+ zfcp_erp_port_failed(port, 32, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
}
break;
-
case FSF_GOOD:
- /* save port handle assigned by FSF */
port->handle = header->port_handle;
- ZFCP_LOG_INFO("The remote port 0x%016Lx via adapter %s "
- "was opened, it's port handle is 0x%x\n",
- port->wwpn, zfcp_get_busid_by_port(port),
- port->handle);
- /* mark port as open */
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
ZFCP_STATUS_COMMON_ACCESS_BOXED,
&port->status);
- retval = 0;
/* check whether D_ID has changed during open */
/*
* FIXME: This check is not airtight, as the FCP channel does
@@ -2526,320 +1496,168 @@ zfcp_fsf_open_port_handler(struct zfcp_fsf_req *fsf_req)
* another GID_PN straight after a port has been opened.
* Alternately, an ADISC/PDISC ELS should suffice, as well.
*/
- plogi = (struct fsf_plogi *) fsf_req->qtcb->bottom.support.els;
- if (!atomic_test_mask(ZFCP_STATUS_PORT_NO_WWPN, &port->status))
- {
- if (fsf_req->qtcb->bottom.support.els1_length <
- sizeof (struct fsf_plogi)) {
- ZFCP_LOG_INFO(
- "warning: insufficient length of "
- "PLOGI payload (%i)\n",
- fsf_req->qtcb->bottom.support.els1_length);
- /* skip sanity check and assume wwpn is ok */
- } else {
- if (plogi->serv_param.wwpn != port->wwpn) {
- ZFCP_LOG_INFO("warning: d_id of port "
- "0x%016Lx changed during "
- "open\n", port->wwpn);
- atomic_clear_mask(
- ZFCP_STATUS_PORT_DID_DID,
- &port->status);
- } else {
- port->wwnn = plogi->serv_param.wwnn;
- zfcp_plogi_evaluate(port, plogi);
- }
+ if (atomic_read(&port->status) & ZFCP_STATUS_PORT_NO_WWPN)
+ break;
+
+ plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els;
+ if (req->qtcb->bottom.support.els1_length >= sizeof(*plogi)) {
+ if (plogi->serv_param.wwpn != port->wwpn)
+ atomic_clear_mask(ZFCP_STATUS_PORT_DID_DID,
+ &port->status);
+ else {
+ port->wwnn = plogi->serv_param.wwnn;
+ zfcp_fc_plogi_evaluate(port, plogi);
}
}
break;
-
case FSF_UNKNOWN_OP_SUBTYPE:
- /* should never occure, subtype not set in zfcp_fsf_open_port */
- ZFCP_LOG_INFO("unknown operation subtype (adapter: %s, "
- "op_subtype=0x%x)\n",
- zfcp_get_busid_by_port(port),
- fsf_req->qtcb->bottom.support.operation_subtype);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- default:
- ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
- "(debug info 0x%x)\n",
- header->fsf_status);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
}
- skip_fsfstatus:
+skip_fsfstatus:
atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &port->status);
- return retval;
}
-/*
- * function: zfcp_fsf_close_port
- *
- * purpose: submit FSF command "close port"
- *
- * returns: address of initiated FSF request
- * NULL - request could not be initiated
+/**
+ * zfcp_fsf_open_port - create and send open port request
+ * @erp_action: pointer to struct zfcp_erp_action
+ * Returns: 0 on success, error otherwise
*/
-int
-zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
+int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
{
volatile struct qdio_buffer_element *sbale;
- struct zfcp_fsf_req *fsf_req;
- unsigned long lock_flags;
- int retval = 0;
-
- /* setup new FSF request */
- retval = zfcp_fsf_req_create(erp_action->adapter,
- FSF_QTCB_CLOSE_PORT,
- ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
- erp_action->adapter->pool.fsf_req_erp,
- &lock_flags, &fsf_req);
- if (retval < 0) {
- ZFCP_LOG_INFO("error: Could not create a close port request "
- "for port 0x%016Lx on adapter %s.\n",
- erp_action->port->wwpn,
- zfcp_get_busid_by_adapter(erp_action->adapter));
+ struct zfcp_adapter *adapter = erp_action->adapter;
+ struct zfcp_fsf_req *req;
+ int retval = -EIO;
+
+ spin_lock(&adapter->req_q.lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
+
+ req = zfcp_fsf_req_create(adapter,
+ FSF_QTCB_OPEN_PORT_WITH_DID,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (unlikely(IS_ERR(req))) {
+ retval = PTR_ERR(req);
goto out;
}
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
+ sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
- atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status);
- fsf_req->data = (unsigned long) erp_action->port;
- fsf_req->erp_action = erp_action;
- fsf_req->qtcb->header.port_handle = erp_action->port->handle;
- fsf_req->erp_action = erp_action;
- erp_action->fsf_req = fsf_req;
-
- zfcp_erp_start_timer(fsf_req);
- retval = zfcp_fsf_req_send(fsf_req);
+ req->handler = zfcp_fsf_open_port_handler;
+ req->qtcb->bottom.support.d_id = erp_action->port->d_id;
+ req->data = erp_action->port;
+ req->erp_action = erp_action;
+ erp_action->fsf_req = req;
+ atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status);
+
+ zfcp_fsf_start_erp_timer(req);
+ retval = zfcp_fsf_req_send(req);
if (retval) {
- ZFCP_LOG_INFO("error: Could not send a close port request for "
- "port 0x%016Lx on adapter %s.\n",
- erp_action->port->wwpn,
- zfcp_get_busid_by_adapter(erp_action->adapter));
- zfcp_fsf_req_free(fsf_req);
+ zfcp_fsf_req_free(req);
erp_action->fsf_req = NULL;
- goto out;
}
-
- ZFCP_LOG_TRACE("close port request initiated "
- "(adapter %s, port 0x%016Lx)\n",
- zfcp_get_busid_by_adapter(erp_action->adapter),
- erp_action->port->wwpn);
- out:
- write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
- lock_flags);
+out:
+ spin_unlock(&adapter->req_q.lock);
return retval;
}
-/*
- * function: zfcp_fsf_close_port_handler
- *
- * purpose: is called for finished Close Port FSF command
- *
- * returns:
- */
-static int
-zfcp_fsf_close_port_handler(struct zfcp_fsf_req *fsf_req)
+static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
{
- int retval = -EINVAL;
- struct zfcp_port *port;
+ struct zfcp_port *port = req->data;
- port = (struct zfcp_port *) fsf_req->data;
-
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
- /* don't change port status in our bookkeeping */
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
goto skip_fsfstatus;
- }
-
- /* evaluate FSF status in QTCB */
- switch (fsf_req->qtcb->header.fsf_status) {
+ switch (req->qtcb->header.fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID:
- ZFCP_LOG_INFO("Temporary port identifier 0x%x for port "
- "0x%016Lx on adapter %s invalid. This may happen "
- "occasionally.\n", port->handle,
- port->wwpn, zfcp_get_busid_by_port(port));
- ZFCP_LOG_DEBUG("status qualifier:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
- (char *) &fsf_req->qtcb->header.fsf_status_qual,
- sizeof (union fsf_status_qual));
- zfcp_erp_adapter_reopen(port->adapter, 0, 107, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_erp_adapter_reopen(port->adapter, 0, 107, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
-
case FSF_ADAPTER_STATUS_AVAILABLE:
- /* Note: FSF has actually closed the port in this case.
- * The status code is just daft. Fingers crossed for a change
- */
- retval = 0;
break;
-
case FSF_GOOD:
- ZFCP_LOG_TRACE("remote port 0x016%Lx on adapter %s closed, "
- "port handle 0x%x\n", port->wwpn,
- zfcp_get_busid_by_port(port), port->handle);
- zfcp_erp_modify_port_status(port, 33, fsf_req,
+ zfcp_erp_modify_port_status(port, 33, req,
ZFCP_STATUS_COMMON_OPEN,
ZFCP_CLEAR);
- retval = 0;
- break;
-
- default:
- ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
- "(debug info 0x%x)\n",
- fsf_req->qtcb->header.fsf_status);
break;
}
- skip_fsfstatus:
+skip_fsfstatus:
atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &port->status);
- return retval;
}
-/*
- * function: zfcp_fsf_close_physical_port
- *
- * purpose: submit FSF command "close physical port"
- *
- * returns: address of initiated FSF request
- * NULL - request could not be initiated
+/**
+ * zfcp_fsf_close_port - create and send close port request
+ * @erp_action: pointer to struct zfcp_erp_action
+ * Returns: 0 on success, error otherwise
*/
-int
-zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
+int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
{
volatile struct qdio_buffer_element *sbale;
- struct zfcp_fsf_req *fsf_req;
- unsigned long lock_flags;
- int retval = 0;
-
- /* setup new FSF request */
- retval = zfcp_fsf_req_create(erp_action->adapter,
- FSF_QTCB_CLOSE_PHYSICAL_PORT,
- ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
- erp_action->adapter->pool.fsf_req_erp,
- &lock_flags, &fsf_req);
- if (retval < 0) {
- ZFCP_LOG_INFO("error: Could not create close physical port "
- "request (adapter %s, port 0x%016Lx)\n",
- zfcp_get_busid_by_adapter(erp_action->adapter),
- erp_action->port->wwpn);
+ struct zfcp_adapter *adapter = erp_action->adapter;
+ struct zfcp_fsf_req *req;
+ int retval = -EIO;
+ spin_lock(&adapter->req_q.lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
+
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (unlikely(IS_ERR(req))) {
+ retval = PTR_ERR(req);
goto out;
}
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
+ sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
- /* mark port as being closed */
- atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING,
- &erp_action->port->status);
- /* save a pointer to this port */
- fsf_req->data = (unsigned long) erp_action->port;
- fsf_req->qtcb->header.port_handle = erp_action->port->handle;
- fsf_req->erp_action = erp_action;
- erp_action->fsf_req = fsf_req;
-
- zfcp_erp_start_timer(fsf_req);
- retval = zfcp_fsf_req_send(fsf_req);
+ req->handler = zfcp_fsf_close_port_handler;
+ req->data = erp_action->port;
+ req->erp_action = erp_action;
+ req->qtcb->header.port_handle = erp_action->port->handle;
+ erp_action->fsf_req = req;
+ atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status);
+
+ zfcp_fsf_start_erp_timer(req);
+ retval = zfcp_fsf_req_send(req);
if (retval) {
- ZFCP_LOG_INFO("error: Could not send close physical port "
- "request (adapter %s, port 0x%016Lx)\n",
- zfcp_get_busid_by_adapter(erp_action->adapter),
- erp_action->port->wwpn);
- zfcp_fsf_req_free(fsf_req);
+ zfcp_fsf_req_free(req);
erp_action->fsf_req = NULL;
- goto out;
}
-
- ZFCP_LOG_TRACE("close physical port request initiated "
- "(adapter %s, port 0x%016Lx)\n",
- zfcp_get_busid_by_adapter(erp_action->adapter),
- erp_action->port->wwpn);
- out:
- write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
- lock_flags);
+out:
+ spin_unlock(&adapter->req_q.lock);
return retval;
}
-/*
- * function: zfcp_fsf_close_physical_port_handler
- *
- * purpose: is called for finished Close Physical Port FSF command
- *
- * returns:
- */
-static int
-zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *fsf_req)
+static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
{
- int retval = -EINVAL;
- struct zfcp_port *port;
+ struct zfcp_port *port = req->data;
+ struct fsf_qtcb_header *header = &req->qtcb->header;
struct zfcp_unit *unit;
- struct fsf_qtcb_header *header;
- u16 subtable, rule, counter;
- port = (struct zfcp_port *) fsf_req->data;
- header = &fsf_req->qtcb->header;
-
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
- /* don't change port status in our bookkeeping */
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
goto skip_fsfstatus;
- }
- /* evaluate FSF status in QTCB */
switch (header->fsf_status) {
-
case FSF_PORT_HANDLE_NOT_VALID:
- ZFCP_LOG_INFO("Temporary port identifier 0x%x invalid"
- "(adapter %s, port 0x%016Lx). "
- "This may happen occasionally.\n",
- port->handle,
- zfcp_get_busid_by_port(port),
- port->wwpn);
- ZFCP_LOG_DEBUG("status qualifier:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
- (char *) &header->fsf_status_qual,
- sizeof (union fsf_status_qual));
- zfcp_erp_adapter_reopen(port->adapter, 0, 108, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_erp_adapter_reopen(port->adapter, 0, 108, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
-
case FSF_ACCESS_DENIED:
- ZFCP_LOG_NORMAL("Access denied, cannot close "
- "physical port 0x%016Lx on adapter %s\n",
- port->wwpn, zfcp_get_busid_by_port(port));
- for (counter = 0; counter < 2; counter++) {
- subtable = header->fsf_status_qual.halfword[counter * 2];
- rule = header->fsf_status_qual.halfword[counter * 2 + 1];
- switch (subtable) {
- case FSF_SQ_CFDC_SUBTABLE_OS:
- case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
- case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
- case FSF_SQ_CFDC_SUBTABLE_LUN:
- ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
- zfcp_act_subtable_type[subtable], rule);
- break;
- }
- }
- zfcp_erp_port_access_denied(port, 58, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_fsf_access_denied_port(req, port);
break;
-
case FSF_PORT_BOXED:
- ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter "
- "%s needs to be reopened but it was attempted "
- "to close it physically.\n",
- port->wwpn,
- zfcp_get_busid_by_port(port));
- zfcp_erp_port_boxed(port, 50, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
- ZFCP_STATUS_FSFREQ_RETRY;
-
+ zfcp_erp_port_boxed(port, 50, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR |
+ ZFCP_STATUS_FSFREQ_RETRY;
/* can't use generic zfcp_erp_modify_port_status because
* ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
@@ -2847,154 +1665,88 @@ zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *fsf_req)
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
&unit->status);
break;
-
case FSF_ADAPTER_STATUS_AVAILABLE:
switch (header->fsf_status_qual.word[0]) {
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
- /* This will now be escalated by ERP */
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
+ /* fall through */
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
- /* ERP strategy will escalate */
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
- default:
- ZFCP_LOG_NORMAL
- ("bug: Wrong status qualifier 0x%x arrived.\n",
- header->fsf_status_qual.word[0]);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
}
break;
-
case FSF_GOOD:
- ZFCP_LOG_DEBUG("Remote port 0x%016Lx via adapter %s "
- "physically closed, port handle 0x%x\n",
- port->wwpn,
- zfcp_get_busid_by_port(port), port->handle);
/* can't use generic zfcp_erp_modify_port_status because
* ZFCP_STATUS_COMMON_OPEN must not be reset for the port
*/
atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
list_for_each_entry(unit, &port->unit_list_head, list)
- atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
- retval = 0;
- break;
-
- default:
- ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
- "(debug info 0x%x)\n",
- header->fsf_status);
+ atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
+ &unit->status);
break;
}
-
- skip_fsfstatus:
+skip_fsfstatus:
atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status);
- return retval;
}
-/*
- * function: zfcp_fsf_open_unit
- *
- * purpose:
- *
- * returns:
- *
- * assumptions: This routine does not check whether the associated
- * remote port has already been opened. This should be
- * done by calling routines. Otherwise some status
- * may be presented by FSF
+/**
+ * zfcp_fsf_close_physical_port - close physical port
+ * @erp_action: pointer to struct zfcp_erp_action
+ * Returns: 0 on success
*/
-int
-zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
+int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
{
volatile struct qdio_buffer_element *sbale;
- struct zfcp_fsf_req *fsf_req;
- unsigned long lock_flags;
- int retval = 0;
-
- /* setup new FSF request */
- retval = zfcp_fsf_req_create(erp_action->adapter,
- FSF_QTCB_OPEN_LUN,
- ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
- erp_action->adapter->pool.fsf_req_erp,
- &lock_flags, &fsf_req);
- if (retval < 0) {
- ZFCP_LOG_INFO("error: Could not create open unit request for "
- "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n",
- erp_action->unit->fcp_lun,
- erp_action->unit->port->wwpn,
- zfcp_get_busid_by_adapter(erp_action->adapter));
+ struct zfcp_adapter *adapter = erp_action->adapter;
+ struct zfcp_fsf_req *req;
+ int retval = -EIO;
+
+ spin_lock(&adapter->req_q.lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
+
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (unlikely(IS_ERR(req))) {
+ retval = PTR_ERR(req);
goto out;
}
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
- sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
- sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
+ sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
- fsf_req->qtcb->header.port_handle = erp_action->port->handle;
- fsf_req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun;
- if (!(erp_action->adapter->connection_features & FSF_FEATURE_NPIV_MODE))
- fsf_req->qtcb->bottom.support.option =
- FSF_OPEN_LUN_SUPPRESS_BOXING;
- atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status);
- fsf_req->data = (unsigned long) erp_action->unit;
- fsf_req->erp_action = erp_action;
- erp_action->fsf_req = fsf_req;
+ req->data = erp_action->port;
+ req->qtcb->header.port_handle = erp_action->port->handle;
+ req->erp_action = erp_action;
+ req->handler = zfcp_fsf_close_physical_port_handler;
+ erp_action->fsf_req = req;
+ atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING,
+ &erp_action->port->status);
- zfcp_erp_start_timer(fsf_req);
- retval = zfcp_fsf_req_send(erp_action->fsf_req);
+ zfcp_fsf_start_erp_timer(req);
+ retval = zfcp_fsf_req_send(req);
if (retval) {
- ZFCP_LOG_INFO("error: Could not send an open unit request "
- "on the adapter %s, port 0x%016Lx for "
- "unit 0x%016Lx\n",
- zfcp_get_busid_by_adapter(erp_action->adapter),
- erp_action->port->wwpn,
- erp_action->unit->fcp_lun);
- zfcp_fsf_req_free(fsf_req);
+ zfcp_fsf_req_free(req);
erp_action->fsf_req = NULL;
- goto out;
}
-
- ZFCP_LOG_TRACE("Open LUN request initiated (adapter %s, "
- "port 0x%016Lx, unit 0x%016Lx)\n",
- zfcp_get_busid_by_adapter(erp_action->adapter),
- erp_action->port->wwpn, erp_action->unit->fcp_lun);
- out:
- write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
- lock_flags);
+out:
+ spin_unlock(&adapter->req_q.lock);
return retval;
}
-/*
- * function: zfcp_fsf_open_unit_handler
- *
- * purpose: is called for finished Open LUN command
- *
- * returns:
- */
-static int
-zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req)
+static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
{
- int retval = -EINVAL;
- struct zfcp_adapter *adapter;
- struct zfcp_unit *unit;
- struct fsf_qtcb_header *header;
- struct fsf_qtcb_bottom_support *bottom;
- struct fsf_queue_designator *queue_designator;
- u16 subtable, rule, counter;
+ struct zfcp_adapter *adapter = req->adapter;
+ struct zfcp_unit *unit = req->data;
+ struct fsf_qtcb_header *header = &req->qtcb->header;
+ struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
+ struct fsf_queue_designator *queue_designator =
+ &header->fsf_status_qual.fsf_queue_designator;
int exclusive, readwrite;
- unit = (struct zfcp_unit *) fsf_req->data;
-
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
- /* don't change unit status in our bookkeeping */
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
goto skip_fsfstatus;
- }
-
- adapter = fsf_req->adapter;
- header = &fsf_req->qtcb->header;
- bottom = &fsf_req->qtcb->bottom.support;
- queue_designator = &header->fsf_status_qual.fsf_queue_designator;
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
ZFCP_STATUS_COMMON_ACCESS_BOXED |
@@ -3002,155 +1754,65 @@ zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req)
ZFCP_STATUS_UNIT_READONLY,
&unit->status);
- /* evaluate FSF status in QTCB */
switch (header->fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID:
- ZFCP_LOG_INFO("Temporary port identifier 0x%x "
- "for port 0x%016Lx on adapter %s invalid "
- "This may happen occasionally\n",
- unit->port->handle,
- unit->port->wwpn, zfcp_get_busid_by_unit(unit));
- ZFCP_LOG_DEBUG("status qualifier:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
- (char *) &header->fsf_status_qual,
- sizeof (union fsf_status_qual));
- zfcp_erp_adapter_reopen(unit->port->adapter, 0, 109, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
+ zfcp_erp_adapter_reopen(unit->port->adapter, 0, 109, req);
+ /* fall through */
case FSF_LUN_ALREADY_OPEN:
- ZFCP_LOG_NORMAL("bug: Attempted to open unit 0x%016Lx on "
- "remote port 0x%016Lx on adapter %s twice.\n",
- unit->fcp_lun,
- unit->port->wwpn, zfcp_get_busid_by_unit(unit));
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
-
case FSF_ACCESS_DENIED:
- ZFCP_LOG_NORMAL("Access denied, cannot open unit 0x%016Lx on "
- "remote port 0x%016Lx on adapter %s\n",
- unit->fcp_lun, unit->port->wwpn,
- zfcp_get_busid_by_unit(unit));
- for (counter = 0; counter < 2; counter++) {
- subtable = header->fsf_status_qual.halfword[counter * 2];
- rule = header->fsf_status_qual.halfword[counter * 2 + 1];
- switch (subtable) {
- case FSF_SQ_CFDC_SUBTABLE_OS:
- case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
- case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
- case FSF_SQ_CFDC_SUBTABLE_LUN:
- ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
- zfcp_act_subtable_type[subtable], rule);
- break;
- }
- }
- zfcp_erp_unit_access_denied(unit, 59, fsf_req);
+ zfcp_fsf_access_denied_unit(req, unit);
atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
- atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
break;
-
case FSF_PORT_BOXED:
- ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s "
- "needs to be reopened\n",
- unit->port->wwpn, zfcp_get_busid_by_unit(unit));
- zfcp_erp_port_boxed(unit->port, 51, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
- ZFCP_STATUS_FSFREQ_RETRY;
+ zfcp_erp_port_boxed(unit->port, 51, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR |
+ ZFCP_STATUS_FSFREQ_RETRY;
break;
-
case FSF_LUN_SHARING_VIOLATION:
- if (header->fsf_status_qual.word[0] != 0) {
- ZFCP_LOG_NORMAL("FCP-LUN 0x%Lx at the remote port "
- "with WWPN 0x%Lx "
- "connected to the adapter %s "
- "is already in use in LPAR%d, CSS%d\n",
- unit->fcp_lun,
- unit->port->wwpn,
- zfcp_get_busid_by_unit(unit),
- queue_designator->hla,
- queue_designator->cssid);
- } else {
- subtable = header->fsf_status_qual.halfword[4];
- rule = header->fsf_status_qual.halfword[5];
- switch (subtable) {
- case FSF_SQ_CFDC_SUBTABLE_OS:
- case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
- case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
- case FSF_SQ_CFDC_SUBTABLE_LUN:
- ZFCP_LOG_NORMAL("Access to FCP-LUN 0x%Lx at the "
- "remote port with WWPN 0x%Lx "
- "connected to the adapter %s "
- "is denied (%s rule %d)\n",
- unit->fcp_lun,
- unit->port->wwpn,
- zfcp_get_busid_by_unit(unit),
- zfcp_act_subtable_type[subtable],
- rule);
- break;
- }
- }
- ZFCP_LOG_DEBUG("status qualifier:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
- (char *) &header->fsf_status_qual,
- sizeof (union fsf_status_qual));
- zfcp_erp_unit_access_denied(unit, 60, fsf_req);
+ if (header->fsf_status_qual.word[0])
+ dev_warn(&adapter->ccw_device->dev,
+ "FCP-LUN 0x%Lx at the remote port "
+ "with WWPN 0x%Lx "
+ "connected to the adapter "
+ "is already in use in LPAR%d, CSS%d.\n",
+ unit->fcp_lun,
+ unit->port->wwpn,
+ queue_designator->hla,
+ queue_designator->cssid);
+ else
+ zfcp_act_eval_err(adapter,
+ header->fsf_status_qual.word[2]);
+ zfcp_erp_unit_access_denied(unit, 60, req);
atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
-
case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
- ZFCP_LOG_INFO("error: The adapter ran out of resources. "
- "There is no handle (temporary port identifier) "
- "available for unit 0x%016Lx on port 0x%016Lx "
- "on adapter %s\n",
- unit->fcp_lun,
- unit->port->wwpn,
- zfcp_get_busid_by_unit(unit));
- zfcp_erp_unit_failed(unit, 34, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ dev_warn(&adapter->ccw_device->dev,
+ "The adapter ran out of resources. There is no "
+ "handle available for unit 0x%016Lx on port 0x%016Lx.",
+ unit->fcp_lun, unit->port->wwpn);
+ zfcp_erp_unit_failed(unit, 34, req);
+ /* fall through */
+ case FSF_INVALID_COMMAND_OPTION:
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
-
case FSF_ADAPTER_STATUS_AVAILABLE:
switch (header->fsf_status_qual.word[0]) {
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
- /* Re-establish link to port */
zfcp_test_link(unit->port);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
+ /* fall through */
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
- /* ERP strategy will escalate */
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
- default:
- ZFCP_LOG_NORMAL
- ("bug: Wrong status qualifier 0x%x arrived.\n",
- header->fsf_status_qual.word[0]);
}
break;
- case FSF_INVALID_COMMAND_OPTION:
- ZFCP_LOG_NORMAL(
- "Invalid option 0x%x has been specified "
- "in QTCB bottom sent to the adapter %s\n",
- bottom->option,
- zfcp_get_busid_by_adapter(adapter));
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- retval = -EINVAL;
- break;
-
case FSF_GOOD:
- /* save LUN handle assigned by FSF */
unit->handle = header->lun_handle;
- ZFCP_LOG_TRACE("unit 0x%016Lx on remote port 0x%016Lx on "
- "adapter %s opened, port handle 0x%x\n",
- unit->fcp_lun,
- unit->port->wwpn,
- zfcp_get_busid_by_unit(unit),
- unit->handle);
- /* mark unit as open */
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) &&
@@ -3168,1528 +1830,629 @@ zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req)
if (!readwrite) {
atomic_set_mask(ZFCP_STATUS_UNIT_READONLY,
&unit->status);
- ZFCP_LOG_NORMAL("read-only access for unit "
- "(adapter %s, wwpn=0x%016Lx, "
- "fcp_lun=0x%016Lx)\n",
- zfcp_get_busid_by_unit(unit),
- unit->port->wwpn,
- unit->fcp_lun);
+ dev_info(&adapter->ccw_device->dev,
+ "Read-only access for unit 0x%016Lx "
+ "on port 0x%016Lx.\n",
+ unit->fcp_lun, unit->port->wwpn);
}
if (exclusive && !readwrite) {
- ZFCP_LOG_NORMAL("exclusive access of read-only "
- "unit not supported\n");
- zfcp_erp_unit_failed(unit, 35, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- zfcp_erp_unit_shutdown(unit, 0, 80, fsf_req);
+ dev_err(&adapter->ccw_device->dev,
+ "Exclusive access of read-only unit "
+ "0x%016Lx on port 0x%016Lx not "
+ "supported, disabling unit.\n",
+ unit->fcp_lun, unit->port->wwpn);
+ zfcp_erp_unit_failed(unit, 35, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_erp_unit_shutdown(unit, 0, 80, req);
} else if (!exclusive && readwrite) {
- ZFCP_LOG_NORMAL("shared access of read-write "
- "unit not supported\n");
- zfcp_erp_unit_failed(unit, 36, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- zfcp_erp_unit_shutdown(unit, 0, 81, fsf_req);
+ dev_err(&adapter->ccw_device->dev,
+ "Shared access of read-write unit "
+ "0x%016Lx on port 0x%016Lx not "
+ "supported, disabling unit.\n",
+ unit->fcp_lun, unit->port->wwpn);
+ zfcp_erp_unit_failed(unit, 36, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_erp_unit_shutdown(unit, 0, 81, req);
}
}
-
- retval = 0;
- break;
-
- default:
- ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
- "(debug info 0x%x)\n",
- header->fsf_status);
break;
}
- skip_fsfstatus:
+skip_fsfstatus:
atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &unit->status);
- return retval;
}
-/*
- * function: zfcp_fsf_close_unit
- *
- * purpose:
- *
- * returns: address of fsf_req - request successfully initiated
- * NULL -
- *
- * assumptions: This routine does not check whether the associated
- * remote port/lun has already been opened. This should be
- * done by calling routines. Otherwise some status
- * may be presented by FSF
+/**
+ * zfcp_fsf_open_unit - open unit
+ * @erp_action: pointer to struct zfcp_erp_action
+ * Returns: 0 on success, error otherwise
*/
-int
-zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
+int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
{
volatile struct qdio_buffer_element *sbale;
- struct zfcp_fsf_req *fsf_req;
- unsigned long lock_flags;
- int retval = 0;
-
- /* setup new FSF request */
- retval = zfcp_fsf_req_create(erp_action->adapter,
- FSF_QTCB_CLOSE_LUN,
- ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
- erp_action->adapter->pool.fsf_req_erp,
- &lock_flags, &fsf_req);
- if (retval < 0) {
- ZFCP_LOG_INFO("error: Could not create close unit request for "
- "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n",
- erp_action->unit->fcp_lun,
- erp_action->port->wwpn,
- zfcp_get_busid_by_adapter(erp_action->adapter));
+ struct zfcp_adapter *adapter = erp_action->adapter;
+ struct zfcp_fsf_req *req;
+ int retval = -EIO;
+
+ spin_lock(&adapter->req_q.lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
+
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (unlikely(IS_ERR(req))) {
+ retval = PTR_ERR(req);
goto out;
}
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
+ sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
- fsf_req->qtcb->header.port_handle = erp_action->port->handle;
- fsf_req->qtcb->header.lun_handle = erp_action->unit->handle;
- atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status);
- fsf_req->data = (unsigned long) erp_action->unit;
- fsf_req->erp_action = erp_action;
- erp_action->fsf_req = fsf_req;
+ req->qtcb->header.port_handle = erp_action->port->handle;
+ req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun;
+ req->handler = zfcp_fsf_open_unit_handler;
+ req->data = erp_action->unit;
+ req->erp_action = erp_action;
+ erp_action->fsf_req = req;
- zfcp_erp_start_timer(fsf_req);
- retval = zfcp_fsf_req_send(erp_action->fsf_req);
+ if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
+ req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
+
+ atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status);
+
+ zfcp_fsf_start_erp_timer(req);
+ retval = zfcp_fsf_req_send(req);
if (retval) {
- ZFCP_LOG_INFO("error: Could not send a close unit request for "
- "unit 0x%016Lx on port 0x%016Lx onadapter %s.\n",
- erp_action->unit->fcp_lun,
- erp_action->port->wwpn,
- zfcp_get_busid_by_adapter(erp_action->adapter));
- zfcp_fsf_req_free(fsf_req);
+ zfcp_fsf_req_free(req);
erp_action->fsf_req = NULL;
- goto out;
}
-
- ZFCP_LOG_TRACE("Close LUN request initiated (adapter %s, "
- "port 0x%016Lx, unit 0x%016Lx)\n",
- zfcp_get_busid_by_adapter(erp_action->adapter),
- erp_action->port->wwpn, erp_action->unit->fcp_lun);
- out:
- write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
- lock_flags);
+out:
+ spin_unlock(&adapter->req_q.lock);
return retval;
}
-/*
- * function: zfcp_fsf_close_unit_handler
- *
- * purpose: is called for finished Close LUN FSF command
- *
- * returns:
- */
-static int
-zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *fsf_req)
+static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req)
{
- int retval = -EINVAL;
- struct zfcp_unit *unit;
-
- unit = (struct zfcp_unit *) fsf_req->data;
+ struct zfcp_unit *unit = req->data;
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
- /* don't change unit status in our bookkeeping */
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
goto skip_fsfstatus;
- }
-
- /* evaluate FSF status in QTCB */
- switch (fsf_req->qtcb->header.fsf_status) {
+ switch (req->qtcb->header.fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID:
- ZFCP_LOG_INFO("Temporary port identifier 0x%x for port "
- "0x%016Lx on adapter %s invalid. This may "
- "happen in rare circumstances\n",
- unit->port->handle,
- unit->port->wwpn,
- zfcp_get_busid_by_unit(unit));
- ZFCP_LOG_DEBUG("status qualifier:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
- (char *) &fsf_req->qtcb->header.fsf_status_qual,
- sizeof (union fsf_status_qual));
- zfcp_erp_adapter_reopen(unit->port->adapter, 0, 110, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_erp_adapter_reopen(unit->port->adapter, 0, 110, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
-
case FSF_LUN_HANDLE_NOT_VALID:
- ZFCP_LOG_INFO("Temporary LUN identifier 0x%x of unit "
- "0x%016Lx on port 0x%016Lx on adapter %s is "
- "invalid. This may happen occasionally.\n",
- unit->handle,
- unit->fcp_lun,
- unit->port->wwpn,
- zfcp_get_busid_by_unit(unit));
- ZFCP_LOG_DEBUG("Status qualifier data:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
- (char *) &fsf_req->qtcb->header.fsf_status_qual,
- sizeof (union fsf_status_qual));
- zfcp_erp_port_reopen(unit->port, 0, 111, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_erp_port_reopen(unit->port, 0, 111, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
-
case FSF_PORT_BOXED:
- ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s "
- "needs to be reopened\n",
- unit->port->wwpn,
- zfcp_get_busid_by_unit(unit));
- zfcp_erp_port_boxed(unit->port, 52, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
- ZFCP_STATUS_FSFREQ_RETRY;
+ zfcp_erp_port_boxed(unit->port, 52, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR |
+ ZFCP_STATUS_FSFREQ_RETRY;
break;
-
case FSF_ADAPTER_STATUS_AVAILABLE:
- switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) {
+ switch (req->qtcb->header.fsf_status_qual.word[0]) {
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
- /* re-establish link to port */
zfcp_test_link(unit->port);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
+ /* fall through */
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
- /* ERP strategy will escalate */
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
- default:
- ZFCP_LOG_NORMAL
- ("bug: Wrong status qualifier 0x%x arrived.\n",
- fsf_req->qtcb->header.fsf_status_qual.word[0]);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
}
break;
-
case FSF_GOOD:
- ZFCP_LOG_TRACE("unit 0x%016Lx on port 0x%016Lx on adapter %s "
- "closed, port handle 0x%x\n",
- unit->fcp_lun,
- unit->port->wwpn,
- zfcp_get_busid_by_unit(unit),
- unit->handle);
- /* mark unit as closed */
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
- retval = 0;
- break;
-
- default:
- ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
- "(debug info 0x%x)\n",
- fsf_req->qtcb->header.fsf_status);
break;
}
-
- skip_fsfstatus:
+skip_fsfstatus:
atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &unit->status);
- return retval;
}
/**
- * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
- * @adapter: adapter where scsi command is issued
- * @unit: unit where command is sent to
- * @scsi_cmnd: scsi command to be sent
- * @timer: timer to be started when request is initiated
- * @req_flags: flags for fsf_request
+ * zfcp_fsf_close_unit - close zfcp unit
+ * @erp_action: pointer to struct zfcp_unit
+ * Returns: 0 on success, error otherwise
*/
-int
-zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter,
- struct zfcp_unit *unit,
- struct scsi_cmnd * scsi_cmnd,
- int use_timer, int req_flags)
+int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
{
- struct zfcp_fsf_req *fsf_req = NULL;
- struct fcp_cmnd_iu *fcp_cmnd_iu;
- unsigned int sbtype;
- unsigned long lock_flags;
- int real_bytes = 0;
- int retval = 0;
- int mask;
-
- /* setup new FSF request */
- retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags,
- adapter->pool.fsf_req_scsi,
- &lock_flags, &fsf_req);
- if (unlikely(retval < 0)) {
- ZFCP_LOG_DEBUG("error: Could not create FCP command request "
- "for unit 0x%016Lx on port 0x%016Lx on "
- "adapter %s\n",
- unit->fcp_lun,
- unit->port->wwpn,
- zfcp_get_busid_by_adapter(adapter));
- goto failed_req_create;
- }
-
- if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
- &unit->status))) {
- retval = -EBUSY;
- goto unit_blocked;
- }
-
- zfcp_unit_get(unit);
- fsf_req->unit = unit;
-
- /* associate FSF request with SCSI request (for look up on abort) */
- scsi_cmnd->host_scribble = (unsigned char *) fsf_req->req_id;
-
- /* associate SCSI command with FSF request */
- fsf_req->data = (unsigned long) scsi_cmnd;
-
- /* set handles of unit and its parent port in QTCB */
- fsf_req->qtcb->header.lun_handle = unit->handle;
- fsf_req->qtcb->header.port_handle = unit->port->handle;
-
- /* FSF does not define the structure of the FCP_CMND IU */
- fcp_cmnd_iu = (struct fcp_cmnd_iu *)
- &(fsf_req->qtcb->bottom.io.fcp_cmnd);
-
- /*
- * set depending on data direction:
- * data direction bits in SBALE (SB Type)
- * data direction bits in QTCB
- * data direction bits in FCP_CMND IU
- */
- switch (scsi_cmnd->sc_data_direction) {
- case DMA_NONE:
- fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
- /*
- * FIXME(qdio):
- * what is the correct type for commands
- * without 'real' data buffers?
- */
- sbtype = SBAL_FLAGS0_TYPE_READ;
- break;
- case DMA_FROM_DEVICE:
- fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
- sbtype = SBAL_FLAGS0_TYPE_READ;
- fcp_cmnd_iu->rddata = 1;
- break;
- case DMA_TO_DEVICE:
- fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE;
- sbtype = SBAL_FLAGS0_TYPE_WRITE;
- fcp_cmnd_iu->wddata = 1;
- break;
- case DMA_BIDIRECTIONAL:
- default:
- /*
- * dummy, catch this condition earlier
- * in zfcp_scsi_queuecommand
- */
- goto failed_scsi_cmnd;
- }
-
- /* set FC service class in QTCB (3 per default) */
- fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT;
-
- /* set FCP_LUN in FCP_CMND IU in QTCB */
- fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
-
- mask = ZFCP_STATUS_UNIT_READONLY | ZFCP_STATUS_UNIT_SHARED;
-
- /* set task attributes in FCP_CMND IU in QTCB */
- if (likely((scsi_cmnd->device->simple_tags) ||
- (atomic_test_mask(mask, &unit->status))))
- fcp_cmnd_iu->task_attribute = SIMPLE_Q;
- else
- fcp_cmnd_iu->task_attribute = UNTAGGED;
-
- /* set additional length of FCP_CDB in FCP_CMND IU in QTCB, if needed */
- if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) {
- fcp_cmnd_iu->add_fcp_cdb_length
- = (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2;
- ZFCP_LOG_TRACE("SCSI CDB length is 0x%x, "
- "additional FCP_CDB length is 0x%x "
- "(shifted right 2 bits)\n",
- scsi_cmnd->cmd_len,
- fcp_cmnd_iu->add_fcp_cdb_length);
- }
- /*
- * copy SCSI CDB (including additional length, if any) to
- * FCP_CDB in FCP_CMND IU in QTCB
- */
- memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
-
- /* FCP CMND IU length in QTCB */
- fsf_req->qtcb->bottom.io.fcp_cmnd_length =
- sizeof (struct fcp_cmnd_iu) +
- fcp_cmnd_iu->add_fcp_cdb_length + sizeof (fcp_dl_t);
+ volatile struct qdio_buffer_element *sbale;
+ struct zfcp_adapter *adapter = erp_action->adapter;
+ struct zfcp_fsf_req *req;
+ int retval = -EIO;
- /* generate SBALEs from data buffer */
- real_bytes = zfcp_qdio_sbals_from_scsicmnd(fsf_req, sbtype, scsi_cmnd);
- if (unlikely(real_bytes < 0)) {
- if (fsf_req->sbal_number < ZFCP_MAX_SBALS_PER_REQ) {
- ZFCP_LOG_DEBUG(
- "Data did not fit into available buffer(s), "
- "waiting for more...\n");
- retval = -EIO;
- } else {
- ZFCP_LOG_NORMAL("error: No truncation implemented but "
- "required. Shutting down unit "
- "(adapter %s, port 0x%016Lx, "
- "unit 0x%016Lx)\n",
- zfcp_get_busid_by_unit(unit),
- unit->port->wwpn,
- unit->fcp_lun);
- zfcp_erp_unit_shutdown(unit, 0, 131, fsf_req);
- retval = -EINVAL;
- }
- goto no_fit;
+ spin_lock(&adapter->req_q.lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (unlikely(IS_ERR(req))) {
+ retval = PTR_ERR(req);
+ goto out;
}
- /* set length of FCP data length in FCP_CMND IU in QTCB */
- zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes);
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
+ sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
- ZFCP_LOG_DEBUG("Sending SCSI command:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
- (char *) scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
+ req->qtcb->header.port_handle = erp_action->port->handle;
+ req->qtcb->header.lun_handle = erp_action->unit->handle;
+ req->handler = zfcp_fsf_close_unit_handler;
+ req->data = erp_action->unit;
+ req->erp_action = erp_action;
+ erp_action->fsf_req = req;
+ atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status);
- if (use_timer)
- zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
-
- retval = zfcp_fsf_req_send(fsf_req);
- if (unlikely(retval < 0)) {
- ZFCP_LOG_INFO("error: Could not send FCP command request "
- "on adapter %s, port 0x%016Lx, unit 0x%016Lx\n",
- zfcp_get_busid_by_adapter(adapter),
- unit->port->wwpn,
- unit->fcp_lun);
- goto send_failed;
+ zfcp_fsf_start_erp_timer(req);
+ retval = zfcp_fsf_req_send(req);
+ if (retval) {
+ zfcp_fsf_req_free(req);
+ erp_action->fsf_req = NULL;
}
-
- ZFCP_LOG_TRACE("Send FCP Command initiated (adapter %s, "
- "port 0x%016Lx, unit 0x%016Lx)\n",
- zfcp_get_busid_by_adapter(adapter),
- unit->port->wwpn,
- unit->fcp_lun);
- goto success;
-
- send_failed:
- no_fit:
- failed_scsi_cmnd:
- zfcp_unit_put(unit);
- unit_blocked:
- zfcp_fsf_req_free(fsf_req);
- fsf_req = NULL;
- scsi_cmnd->host_scribble = NULL;
- success:
- failed_req_create:
- write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
+out:
+ spin_unlock(&adapter->req_q.lock);
return retval;
}
-struct zfcp_fsf_req *
-zfcp_fsf_send_fcp_command_task_management(struct zfcp_adapter *adapter,
- struct zfcp_unit *unit,
- u8 tm_flags, int req_flags)
+static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
{
- struct zfcp_fsf_req *fsf_req = NULL;
- int retval = 0;
- struct fcp_cmnd_iu *fcp_cmnd_iu;
- unsigned long lock_flags;
- volatile struct qdio_buffer_element *sbale;
-
- /* setup new FSF request */
- retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags,
- adapter->pool.fsf_req_scsi,
- &lock_flags, &fsf_req);
- if (retval < 0) {
- ZFCP_LOG_INFO("error: Could not create FCP command (task "
- "management) request for adapter %s, port "
- " 0x%016Lx, unit 0x%016Lx.\n",
- zfcp_get_busid_by_adapter(adapter),
- unit->port->wwpn, unit->fcp_lun);
- goto out;
- }
-
- if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
- &unit->status)))
- goto unit_blocked;
-
- /*
- * Used to decide on proper handler in the return path,
- * could be either zfcp_fsf_send_fcp_command_task_handler or
- * zfcp_fsf_send_fcp_command_task_management_handler */
-
- fsf_req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
-
- /*
- * hold a pointer to the unit being target of this
- * task management request
- */
- fsf_req->data = (unsigned long) unit;
-
- /* set FSF related fields in QTCB */
- fsf_req->qtcb->header.lun_handle = unit->handle;
- fsf_req->qtcb->header.port_handle = unit->port->handle;
- fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
- fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT;
- fsf_req->qtcb->bottom.io.fcp_cmnd_length =
- sizeof (struct fcp_cmnd_iu) + sizeof (fcp_dl_t);
-
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
- sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE;
- sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
-
- /* set FCP related fields in FCP_CMND IU in QTCB */
- fcp_cmnd_iu = (struct fcp_cmnd_iu *)
- &(fsf_req->qtcb->bottom.io.fcp_cmnd);
- fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
- fcp_cmnd_iu->task_management_flags = tm_flags;
-
- zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT);
- retval = zfcp_fsf_req_send(fsf_req);
- if (!retval)
- goto out;
-
- unit_blocked:
- zfcp_fsf_req_free(fsf_req);
- fsf_req = NULL;
-
- out:
- write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
- return fsf_req;
+ lat_rec->sum += lat;
+ lat_rec->min = min(lat_rec->min, lat);
+ lat_rec->max = max(lat_rec->max, lat);
}
-/*
- * function: zfcp_fsf_send_fcp_command_handler
- *
- * purpose: is called for finished Send FCP Command
- *
- * returns:
- */
-static int
-zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *fsf_req)
+static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req)
{
- int retval = -EINVAL;
- struct zfcp_unit *unit;
- struct fsf_qtcb_header *header;
- u16 subtable, rule, counter;
-
- header = &fsf_req->qtcb->header;
-
- if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT))
- unit = (struct zfcp_unit *) fsf_req->data;
- else
- unit = fsf_req->unit;
-
- if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
- /* go directly to calls of special handlers */
- goto skip_fsfstatus;
- }
-
- /* evaluate FSF status in QTCB */
- switch (header->fsf_status) {
-
- case FSF_PORT_HANDLE_NOT_VALID:
- ZFCP_LOG_INFO("Temporary port identifier 0x%x for port "
- "0x%016Lx on adapter %s invalid\n",
- unit->port->handle,
- unit->port->wwpn, zfcp_get_busid_by_unit(unit));
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
- (char *) &header->fsf_status_qual,
- sizeof (union fsf_status_qual));
- zfcp_erp_adapter_reopen(unit->port->adapter, 0, 112, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_LUN_HANDLE_NOT_VALID:
- ZFCP_LOG_INFO("Temporary LUN identifier 0x%x for unit "
- "0x%016Lx on port 0x%016Lx on adapter %s is "
- "invalid. This may happen occasionally.\n",
- unit->handle,
- unit->fcp_lun,
- unit->port->wwpn,
- zfcp_get_busid_by_unit(unit));
- ZFCP_LOG_NORMAL("Status qualifier data:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL,
- (char *) &header->fsf_status_qual,
- sizeof (union fsf_status_qual));
- zfcp_erp_port_reopen(unit->port, 0, 113, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_HANDLE_MISMATCH:
- ZFCP_LOG_NORMAL("bug: The port handle 0x%x has changed "
- "unexpectedly. (adapter %s, port 0x%016Lx, "
- "unit 0x%016Lx)\n",
- unit->port->handle,
- zfcp_get_busid_by_unit(unit),
- unit->port->wwpn,
- unit->fcp_lun);
- ZFCP_LOG_NORMAL("status qualifier:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL,
- (char *) &header->fsf_status_qual,
- sizeof (union fsf_status_qual));
- zfcp_erp_adapter_reopen(unit->port->adapter, 0, 114, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_SERVICE_CLASS_NOT_SUPPORTED:
- ZFCP_LOG_INFO("error: adapter %s does not support fc "
- "class %d.\n",
- zfcp_get_busid_by_unit(unit),
- ZFCP_FC_SERVICE_CLASS_DEFAULT);
- /* stop operation for this adapter */
- zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 132, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_FCPLUN_NOT_VALID:
- ZFCP_LOG_NORMAL("bug: unit 0x%016Lx on port 0x%016Lx on "
- "adapter %s does not have correct unit "
- "handle 0x%x\n",
- unit->fcp_lun,
- unit->port->wwpn,
- zfcp_get_busid_by_unit(unit),
- unit->handle);
- ZFCP_LOG_DEBUG("status qualifier:\n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
- (char *) &header->fsf_status_qual,
- sizeof (union fsf_status_qual));
- zfcp_erp_port_reopen(unit->port, 0, 115, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_ACCESS_DENIED:
- ZFCP_LOG_NORMAL("Access denied, cannot send FCP command to "
- "unit 0x%016Lx on port 0x%016Lx on "
- "adapter %s\n", unit->fcp_lun, unit->port->wwpn,
- zfcp_get_busid_by_unit(unit));
- for (counter = 0; counter < 2; counter++) {
- subtable = header->fsf_status_qual.halfword[counter * 2];
- rule = header->fsf_status_qual.halfword[counter * 2 + 1];
- switch (subtable) {
- case FSF_SQ_CFDC_SUBTABLE_OS:
- case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
- case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
- case FSF_SQ_CFDC_SUBTABLE_LUN:
- ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
- zfcp_act_subtable_type[subtable], rule);
- break;
- }
- }
- zfcp_erp_unit_access_denied(unit, 61, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_DIRECTION_INDICATOR_NOT_VALID:
- ZFCP_LOG_INFO("bug: Invalid data direction given for unit "
- "0x%016Lx on port 0x%016Lx on adapter %s "
- "(debug info %d)\n",
- unit->fcp_lun,
- unit->port->wwpn,
- zfcp_get_busid_by_unit(unit),
- fsf_req->qtcb->bottom.io.data_direction);
- /* stop operation for this adapter */
- zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_CMND_LENGTH_NOT_VALID:
- ZFCP_LOG_NORMAL
- ("bug: An invalid control-data-block length field "
- "was found in a command for unit 0x%016Lx on port "
- "0x%016Lx on adapter %s " "(debug info %d)\n",
- unit->fcp_lun, unit->port->wwpn,
- zfcp_get_busid_by_unit(unit),
- fsf_req->qtcb->bottom.io.fcp_cmnd_length);
- /* stop operation for this adapter */
- zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
+ struct fsf_qual_latency_info *lat_inf;
+ struct latency_cont *lat;
+ struct zfcp_unit *unit = req->unit;
+ unsigned long flags;
- case FSF_PORT_BOXED:
- ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s "
- "needs to be reopened\n",
- unit->port->wwpn, zfcp_get_busid_by_unit(unit));
- zfcp_erp_port_boxed(unit->port, 53, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
- ZFCP_STATUS_FSFREQ_RETRY;
- break;
+ lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info;
- case FSF_LUN_BOXED:
- ZFCP_LOG_NORMAL("unit needs to be reopened (adapter %s, "
- "wwpn=0x%016Lx, fcp_lun=0x%016Lx)\n",
- zfcp_get_busid_by_unit(unit),
- unit->port->wwpn, unit->fcp_lun);
- zfcp_erp_unit_boxed(unit, 54, fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR
- | ZFCP_STATUS_FSFREQ_RETRY;
- break;
-
- case FSF_ADAPTER_STATUS_AVAILABLE:
- switch (header->fsf_status_qual.word[0]) {
- case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
- /* re-establish link to port */
- zfcp_test_link(unit->port);
- break;
- case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
- /* FIXME(hw) need proper specs for proper action */
- /* let scsi stack deal with retries and escalation */
- break;
- default:
- ZFCP_LOG_NORMAL
- ("Unknown status qualifier 0x%x arrived.\n",
- header->fsf_status_qual.word[0]);
- break;
- }
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ switch (req->qtcb->bottom.io.data_direction) {
+ case FSF_DATADIR_READ:
+ lat = &unit->latencies.read;
break;
-
- case FSF_GOOD:
+ case FSF_DATADIR_WRITE:
+ lat = &unit->latencies.write;
break;
-
- case FSF_FCP_RSP_AVAILABLE:
+ case FSF_DATADIR_CMND:
+ lat = &unit->latencies.cmd;
break;
+ default:
+ return;
}
- skip_fsfstatus:
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) {
- retval =
- zfcp_fsf_send_fcp_command_task_management_handler(fsf_req);
- } else {
- retval = zfcp_fsf_send_fcp_command_task_handler(fsf_req);
- fsf_req->unit = NULL;
- zfcp_unit_put(unit);
- }
- return retval;
+ spin_lock_irqsave(&unit->latencies.lock, flags);
+ zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat);
+ zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat);
+ lat->counter++;
+ spin_unlock_irqrestore(&unit->latencies.lock, flags);
}
-/*
- * function: zfcp_fsf_send_fcp_command_task_handler
- *
- * purpose: evaluates FCP_RSP IU
- *
- * returns:
- */
-static int
-zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req)
+static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req)
{
- int retval = 0;
- struct scsi_cmnd *scpnt;
+ struct scsi_cmnd *scpnt = req->data;
struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *)
- &(fsf_req->qtcb->bottom.io.fcp_rsp);
- struct fcp_cmnd_iu *fcp_cmnd_iu = (struct fcp_cmnd_iu *)
- &(fsf_req->qtcb->bottom.io.fcp_cmnd);
+ &(req->qtcb->bottom.io.fcp_rsp);
u32 sns_len;
- char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu);
+ char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1];
unsigned long flags;
- struct zfcp_unit *unit = fsf_req->unit;
-
- read_lock_irqsave(&fsf_req->adapter->abort_lock, flags);
- scpnt = (struct scsi_cmnd *) fsf_req->data;
- if (unlikely(!scpnt)) {
- ZFCP_LOG_DEBUG
- ("Command with fsf_req %p is not associated to "
- "a scsi command anymore. Aborted?\n", fsf_req);
- goto out;
- }
- if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTED)) {
- /* FIXME: (design) mid-layer should handle DID_ABORT like
- * DID_SOFT_ERROR by retrying the request for devices
- * that allow retries.
- */
- ZFCP_LOG_DEBUG("Setting DID_SOFT_ERROR and SUGGEST_RETRY\n");
- set_host_byte(&scpnt->result, DID_SOFT_ERROR);
- set_driver_byte(&scpnt->result, SUGGEST_RETRY);
+
+ if (unlikely(!scpnt))
+ return;
+
+ read_lock_irqsave(&req->adapter->abort_lock, flags);
+
+ if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) {
+ set_host_byte(scpnt, DID_SOFT_ERROR);
+ set_driver_byte(scpnt, SUGGEST_RETRY);
goto skip_fsfstatus;
}
- if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
- ZFCP_LOG_DEBUG("Setting DID_ERROR\n");
- set_host_byte(&scpnt->result, DID_ERROR);