[SCSI] zfcp: Move FC code to new file
Move all Fibre Channel related code to new file and cleanup the code
while doing so.
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index d05b370..ee19be1 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -23,9 +23,6 @@
#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,
@@ -292,189 +289,6 @@
return retval;
}
-
-/**
- * zfcp_erp_adisc - send ADISC ELS command
- * @port: port structure
- */
-static int
-zfcp_erp_adisc(struct zfcp_port *port)
-{
- 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;
- }
-
- 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);
- }
- out:
- return retval;
-}
-
-
-/**
- * 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.
- */
-static void
-zfcp_erp_adisc_handler(unsigned long data)
-{
- 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);
- }
-
- out:
- zfcp_port_put(port);
- __free_pages(sg_page(send_els->req), 0);
- kfree(send_els->req);
- kfree(send_els->resp);
- kfree(send_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.
- */
-int
-zfcp_test_link(struct zfcp_port *port)
-{
- 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;
-}
-
-
/*
* function:
*
@@ -2564,7 +2378,7 @@
{
int retval;
- retval = zfcp_ns_gid_pn_request(erp_action);
+ retval = zfcp_fc_ns_gid_pn_request(erp_action);
if (retval == -ENOMEM) {
retval = ZFCP_ERP_NOMEM;
goto out;