aboutsummaryrefslogtreecommitdiff
path: root/include/scsi
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-09 19:42:25 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-09 19:42:25 -0800
commit382f51fe2f2276344d8a21447656778cdf6583b6 (patch)
treec2836a2cca4126c9c026ce5aa2fdf9f1c8ccded6 /include/scsi
parent701791cc3c8fc6dd83f6ec8af7e2541b4a316606 (diff)
parent54987386ee3790f3900de4df2ed4deb0e18dfc9f (diff)
downloadlinux-linaro-android-382f51fe2f2276344d8a21447656778cdf6583b6.tar.gz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (222 commits) [SCSI] zfcp: Remove flag ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP [SCSI] zfcp: Activate fc4s attributes for zfcp in FC transport class [SCSI] zfcp: Block scsi_eh thread for rport state BLOCKED [SCSI] zfcp: Update FSF error reporting [SCSI] zfcp: Improve ELS ADISC handling [SCSI] zfcp: Simplify handling of ct and els requests [SCSI] zfcp: Remove ZFCP_DID_MASK [SCSI] zfcp: Move WKA port to zfcp FC code [SCSI] zfcp: Use common code definitions for FC CT structs [SCSI] zfcp: Use common code definitions for FC ELS structs [SCSI] zfcp: Update FCP protocol related code [SCSI] zfcp: Dont fail SCSI commands when transitioning to blocked fc_rport [SCSI] zfcp: Assign scheduled work to driver queue [SCSI] zfcp: Remove STATUS_COMMON_REMOVE flag as it is not required anymore [SCSI] zfcp: Implement module unloading [SCSI] zfcp: Merge trace code for fsf requests in one function [SCSI] zfcp: Access ports and units with container_of in sysfs code [SCSI] zfcp: Remove suspend callback [SCSI] zfcp: Remove global config_mutex [SCSI] zfcp: Replace local reference counting with common kref ...
Diffstat (limited to 'include/scsi')
-rw-r--r--include/scsi/Kbuild1
-rw-r--r--include/scsi/fc/Kbuild4
-rw-r--r--include/scsi/fc/fc_els.h6
-rw-r--r--include/scsi/fc/fc_fcoe.h12
-rw-r--r--include/scsi/fc/fc_fcp.h8
-rw-r--r--include/scsi/fc/fc_fip.h12
-rw-r--r--include/scsi/fc/fc_fs.h2
-rw-r--r--include/scsi/fc/fc_gs.h2
-rw-r--r--include/scsi/fc/fc_ns.h35
-rw-r--r--include/scsi/fc_encode.h68
-rw-r--r--include/scsi/fc_frame.h22
-rw-r--r--include/scsi/iscsi_if.h3
-rw-r--r--include/scsi/iscsi_proto.h2
-rw-r--r--include/scsi/libfc.h1158
-rw-r--r--include/scsi/libfcoe.h93
-rw-r--r--include/scsi/libiscsi.h4
-rw-r--r--include/scsi/libsas.h3
-rw-r--r--include/scsi/osd_initiator.h81
-rw-r--r--include/scsi/osd_protocol.h1
-rw-r--r--include/scsi/osd_sense.h3
-rw-r--r--include/scsi/scsi.h4
-rw-r--r--include/scsi/scsi_device.h12
-rw-r--r--include/scsi/scsi_dh.h6
-rw-r--r--include/scsi/scsi_host.h24
-rw-r--r--include/scsi/scsi_transport_fc.h1
25 files changed, 889 insertions, 678 deletions
diff --git a/include/scsi/Kbuild b/include/scsi/Kbuild
index 33b2750e928..b3a0ee6b2f1 100644
--- a/include/scsi/Kbuild
+++ b/include/scsi/Kbuild
@@ -2,3 +2,4 @@ header-y += scsi.h
header-y += scsi_netlink.h
header-y += scsi_netlink_fc.h
header-y += scsi_bsg_fc.h
+header-y += fc/
diff --git a/include/scsi/fc/Kbuild b/include/scsi/fc/Kbuild
new file mode 100644
index 00000000000..56603813c6c
--- /dev/null
+++ b/include/scsi/fc/Kbuild
@@ -0,0 +1,4 @@
+header-y += fc_els.h
+header-y += fc_fs.h
+header-y += fc_gs.h
+header-y += fc_ns.h
diff --git a/include/scsi/fc/fc_els.h b/include/scsi/fc/fc_els.h
index 195ca014d3c..f94328132a2 100644
--- a/include/scsi/fc/fc_els.h
+++ b/include/scsi/fc/fc_els.h
@@ -20,6 +20,8 @@
#ifndef _FC_ELS_H_
#define _FC_ELS_H_
+#include <linux/types.h>
+
/*
* Fibre Channel Switch - Enhanced Link Services definitions.
* From T11 FC-LS Rev 1.2 June 7, 2005.
@@ -248,10 +250,12 @@ struct fc_els_csp {
/*
* sp_features
*/
-#define FC_SP_FT_CIRO 0x8000 /* continuously increasing rel. off. */
+#define FC_SP_FT_NPIV 0x8000 /* multiple N_Port_ID support (FLOGI) */
+#define FC_SP_FT_CIRO 0x8000 /* continuously increasing rel off (PLOGI) */
#define FC_SP_FT_CLAD 0x8000 /* clean address (in FLOGI LS_ACC) */
#define FC_SP_FT_RAND 0x4000 /* random relative offset */
#define FC_SP_FT_VAL 0x2000 /* valid vendor version level */
+#define FC_SP_FT_NPIV_ACC 0x2000 /* NPIV assignment (FLOGI LS_ACC) */
#define FC_SP_FT_FPORT 0x1000 /* F port (1) vs. N port (0) */
#define FC_SP_FT_ABB 0x0800 /* alternate BB_credit management */
#define FC_SP_FT_EDTR 0x0400 /* E_D_TOV Resolution is nanoseconds */
diff --git a/include/scsi/fc/fc_fcoe.h b/include/scsi/fc/fc_fcoe.h
index ccb3dbe9046..e6ad3d2ae47 100644
--- a/include/scsi/fc/fc_fcoe.h
+++ b/include/scsi/fc/fc_fcoe.h
@@ -86,6 +86,18 @@ struct fcoe_crc_eof {
#define FCOE_MIN_FRAME 46
/*
+ * FCoE Link Error Status Block: T11 FC-BB-5 Rev2.0, Clause 7.10.
+ */
+struct fcoe_fc_els_lesb {
+ __be32 lesb_link_fail; /* link failure count */
+ __be32 lesb_vlink_fail; /* virtual link failure count */
+ __be32 lesb_miss_fka; /* missing FIP keep-alive count */
+ __be32 lesb_symb_err; /* symbol error during carrier count */
+ __be32 lesb_err_block; /* errored block count */
+ __be32 lesb_fcs_error; /* frame check sequence error count */
+};
+
+/*
* fc_fcoe_set_mac - Store OUI + DID into MAC address field.
* @mac: mac address to be set
* @did: fc dest id to use
diff --git a/include/scsi/fc/fc_fcp.h b/include/scsi/fc/fc_fcp.h
index 5d38f1989f3..747e2c7d88d 100644
--- a/include/scsi/fc/fc_fcp.h
+++ b/include/scsi/fc/fc_fcp.h
@@ -83,6 +83,8 @@ struct fcp_cmnd32 {
* fc_tm_flags - task management flags field.
*/
#define FCP_TMF_CLR_ACA 0x40 /* clear ACA condition */
+#define FCP_TMF_TGT_RESET 0x20 /* target reset task management,
+ deprecated as of FCP-3 */
#define FCP_TMF_LUN_RESET 0x10 /* logical unit reset task management */
#define FCP_TMF_CLR_TASK_SET 0x04 /* clear task set */
#define FCP_TMF_ABT_TASK_SET 0x02 /* abort task set */
@@ -196,4 +198,10 @@ struct fcp_srr {
__u8 srr_resvd2[3]; /* reserved */
};
+/*
+ * Feature bits in name server FC-4 Features object.
+ */
+#define FCP_FEAT_TARG (1 << 0) /* target function supported */
+#define FCP_FEAT_INIT (1 << 1) /* initiator function supported */
+
#endif /* _FC_FCP_H_ */
diff --git a/include/scsi/fc/fc_fip.h b/include/scsi/fc/fc_fip.h
index 3d138c1fcf8..17baa19380f 100644
--- a/include/scsi/fc/fc_fip.h
+++ b/include/scsi/fc/fc_fip.h
@@ -214,11 +214,21 @@ struct fip_vn_desc {
*/
struct fip_fka_desc {
struct fip_desc fd_desc;
- __u8 fd_resvd[2];
+ __u8 fd_resvd;
+ __u8 fd_flags; /* bit0 is fka disable flag */
__be32 fd_fka_period; /* adv./keep-alive period in mS */
} __attribute__((packed));
/*
+ * flags for fip_fka_desc.fd_flags
+ */
+enum fip_fka_flags {
+ FIP_FKA_ADV_D = 0x01, /* no need for FKA from ENode */
+};
+
+/* FIP_DT_FKA flags */
+
+/*
* FIP_DT_VENDOR descriptor.
*/
struct fip_vendor_desc {
diff --git a/include/scsi/fc/fc_fs.h b/include/scsi/fc/fc_fs.h
index ac4cd38c860..50f28b14345 100644
--- a/include/scsi/fc/fc_fs.h
+++ b/include/scsi/fc/fc_fs.h
@@ -20,6 +20,8 @@
#ifndef _FC_FS_H_
#define _FC_FS_H_
+#include <linux/types.h>
+
/*
* Fibre Channel Framing and Signalling definitions.
* From T11 FC-FS-2 Rev 0.90 - 9 August 2005.
diff --git a/include/scsi/fc/fc_gs.h b/include/scsi/fc/fc_gs.h
index 324dd0e3c62..a37346d47eb 100644
--- a/include/scsi/fc/fc_gs.h
+++ b/include/scsi/fc/fc_gs.h
@@ -20,6 +20,8 @@
#ifndef _FC_GS_H_
#define _FC_GS_H_
+#include <linux/types.h>
+
/*
* Fibre Channel Services - Common Transport.
* From T11.org FC-GS-2 Rev 5.3 November 1998.
diff --git a/include/scsi/fc/fc_ns.h b/include/scsi/fc/fc_ns.h
index 790d7b97d4b..e7d3ac497d7 100644
--- a/include/scsi/fc/fc_ns.h
+++ b/include/scsi/fc/fc_ns.h
@@ -20,6 +20,8 @@
#ifndef _FC_NS_H_
#define _FC_NS_H_
+#include <linux/types.h>
+
/*
* Fibre Channel Services - Name Service (dNS)
* From T11.org FC-GS-2 Rev 5.3 November 1998.
@@ -44,9 +46,12 @@ enum fc_ns_req {
FC_NS_GID_FT = 0x0171, /* get IDs by FC4 type */
FC_NS_GPN_FT = 0x0172, /* get port names by FC4 type */
FC_NS_GID_PT = 0x01a1, /* get IDs by port type */
- FC_NS_RFT_ID = 0x0217, /* reg FC4 type for ID */
FC_NS_RPN_ID = 0x0212, /* reg port name for ID */
FC_NS_RNN_ID = 0x0213, /* reg node name for ID */
+ FC_NS_RFT_ID = 0x0217, /* reg FC4 type for ID */
+ FC_NS_RSPN_ID = 0x0218, /* reg symbolic port name */
+ FC_NS_RFF_ID = 0x021f, /* reg FC4 Features for ID */
+ FC_NS_RSNN_NN = 0x0239, /* reg symbolic node name */
};
/*
@@ -156,4 +161,32 @@ struct fc_ns_rn_id {
__be64 fr_wwn; /* node name or port name */
} __attribute__((__packed__));
+/*
+ * RSNN_NN request - register symbolic node name
+ */
+struct fc_ns_rsnn {
+ __be64 fr_wwn; /* node name */
+ __u8 fr_name_len;
+ char fr_name[];
+} __attribute__((__packed__));
+
+/*
+ * RSPN_ID request - register symbolic port name
+ */
+struct fc_ns_rspn {
+ struct fc_ns_fid fr_fid; /* port ID object */
+ __u8 fr_name_len;
+ char fr_name[];
+} __attribute__((__packed__));
+
+/*
+ * RFF_ID request - register FC-4 Features for ID.
+ */
+struct fc_ns_rff_id {
+ struct fc_ns_fid fr_fid; /* port ID object */
+ __u8 fr_resvd[2];
+ __u8 fr_feat; /* FC-4 Feature bits */
+ __u8 fr_type; /* FC-4 type */
+} __attribute__((__packed__));
+
#endif /* _FC_NS_H_ */
diff --git a/include/scsi/fc_encode.h b/include/scsi/fc_encode.h
index 27dad703824..8eb0a0fc0a7 100644
--- a/include/scsi/fc_encode.h
+++ b/include/scsi/fc_encode.h
@@ -32,7 +32,10 @@ struct fc_ct_req {
struct fc_ns_gid_ft gid;
struct fc_ns_rn_id rn;
struct fc_ns_rft rft;
+ struct fc_ns_rff_id rff;
struct fc_ns_fid fid;
+ struct fc_ns_rsnn snn;
+ struct fc_ns_rspn spn;
} payload;
};
@@ -109,6 +112,7 @@ static inline int fc_ct_fill(struct fc_lport *lport,
enum fc_fh_type *fh_type)
{
struct fc_ct_req *ct;
+ size_t len;
switch (op) {
case FC_NS_GPN_FT:
@@ -128,12 +132,41 @@ static inline int fc_ct_fill(struct fc_lport *lport,
ct->payload.rft.fts = lport->fcts;
break;
- case FC_NS_RPN_ID:
+ case FC_NS_RFF_ID:
+ ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rff_id));
+ hton24(ct->payload.rff.fr_fid.fp_fid,
+ fc_host_port_id(lport->host));
+ ct->payload.rff.fr_type = FC_TYPE_FCP;
+ if (lport->service_params & FCP_SPPF_INIT_FCN)
+ ct->payload.rff.fr_feat = FCP_FEAT_INIT;
+ if (lport->service_params & FCP_SPPF_TARG_FCN)
+ ct->payload.rff.fr_feat |= FCP_FEAT_TARG;
+ break;
+
+ case FC_NS_RNN_ID:
ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rn_id));
hton24(ct->payload.rn.fr_fid.fp_fid,
fc_host_port_id(lport->host));
- ct->payload.rft.fts = lport->fcts;
- put_unaligned_be64(lport->wwpn, &ct->payload.rn.fr_wwn);
+ put_unaligned_be64(lport->wwnn, &ct->payload.rn.fr_wwn);
+ break;
+
+ case FC_NS_RSPN_ID:
+ len = strnlen(fc_host_symbolic_name(lport->host), 255);
+ ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn) + len);
+ hton24(ct->payload.spn.fr_fid.fp_fid,
+ fc_host_port_id(lport->host));
+ strncpy(ct->payload.spn.fr_name,
+ fc_host_symbolic_name(lport->host), len);
+ ct->payload.spn.fr_name_len = len;
+ break;
+
+ case FC_NS_RSNN_NN:
+ len = strnlen(fc_host_symbolic_name(lport->host), 255);
+ ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn) + len);
+ put_unaligned_be64(lport->wwnn, &ct->payload.snn.fr_wwn);
+ strncpy(ct->payload.snn.fr_name,
+ fc_host_symbolic_name(lport->host), len);
+ ct->payload.snn.fr_name_len = len;
break;
default:
@@ -198,6 +231,31 @@ static inline void fc_flogi_fill(struct fc_lport *lport, struct fc_frame *fp)
sp->sp_bb_data = htons((u16) lport->mfs);
cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */
cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
+ if (lport->does_npiv)
+ sp->sp_features = htons(FC_SP_FT_NPIV);
+}
+
+/**
+ * fc_fdisc_fill - Fill in a fdisc request frame.
+ */
+static inline void fc_fdisc_fill(struct fc_lport *lport, struct fc_frame *fp)
+{
+ struct fc_els_csp *sp;
+ struct fc_els_cssp *cp;
+ struct fc_els_flogi *fdisc;
+
+ fdisc = fc_frame_payload_get(fp, sizeof(*fdisc));
+ memset(fdisc, 0, sizeof(*fdisc));
+ fdisc->fl_cmd = (u8) ELS_FDISC;
+ put_unaligned_be64(lport->wwpn, &fdisc->fl_wwpn);
+ put_unaligned_be64(lport->wwnn, &fdisc->fl_wwnn);
+ sp = &fdisc->fl_csp;
+ sp->sp_hi_ver = 0x20;
+ sp->sp_lo_ver = 0x20;
+ sp->sp_bb_cred = htons(10); /* this gets set by gateway */
+ sp->sp_bb_data = htons((u16) lport->mfs);
+ cp = &fdisc->fl_cssp[3 - 1]; /* class 3 parameters */
+ cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
}
/**
@@ -296,6 +354,10 @@ static inline int fc_els_fill(struct fc_lport *lport,
fc_flogi_fill(lport, fp);
break;
+ case ELS_FDISC:
+ fc_fdisc_fill(lport, fp);
+ break;
+
case ELS_LOGO:
fc_logo_fill(lport, fp);
break;
diff --git a/include/scsi/fc_frame.h b/include/scsi/fc_frame.h
index c35d2383cc2..4d3e9c7b7c5 100644
--- a/include/scsi/fc_frame.h
+++ b/include/scsi/fc_frame.h
@@ -28,6 +28,8 @@
#include <scsi/fc/fc_fcp.h>
#include <scsi/fc/fc_encaps.h>
+#include <linux/if_ether.h>
+
/*
* The fc_frame interface is used to pass frame data between functions.
* The frame includes the data buffer, length, and SOF / EOF delimiter types.
@@ -37,6 +39,9 @@
#define FC_FRAME_HEADROOM 32 /* headroom for VLAN + FCoE headers */
#define FC_FRAME_TAILROOM 8 /* trailer space for FCoE */
+/* Max number of skb frags allowed, reserving one for fcoe_crc_eof page */
+#define FC_FRAME_SG_LEN (MAX_SKB_FRAGS - 1)
+
#define fp_skb(fp) (&((fp)->skb))
#define fr_hdr(fp) ((fp)->skb.data)
#define fr_len(fp) ((fp)->skb.len)
@@ -64,6 +69,7 @@ struct fcoe_rcv_info {
enum fc_sof fr_sof; /* start of frame delimiter */
enum fc_eof fr_eof; /* end of frame delimiter */
u8 fr_flags; /* flags - see below */
+ u8 granted_mac[ETH_ALEN]; /* FCoE MAC address */
};
@@ -94,17 +100,7 @@ static inline void fc_frame_init(struct fc_frame *fp)
}
struct fc_frame *fc_frame_alloc_fill(struct fc_lport *, size_t payload_len);
-
-struct fc_frame *__fc_frame_alloc(size_t payload_len);
-
-/*
- * Get frame for sending via port.
- */
-static inline struct fc_frame *_fc_frame_alloc(struct fc_lport *dev,
- size_t payload_len)
-{
- return __fc_frame_alloc(payload_len);
-}
+struct fc_frame *_fc_frame_alloc(size_t payload_len);
/*
* Allocate fc_frame structure and buffer. Set the initial length to
@@ -118,10 +114,10 @@ static inline struct fc_frame *fc_frame_alloc(struct fc_lport *dev, size_t len)
* Note: Since len will often be a constant multiple of 4,
* this check will usually be evaluated and eliminated at compile time.
*/
- if ((len % 4) != 0)
+ if (len && len % 4)
fp = fc_frame_alloc_fill(dev, len);
else
- fp = _fc_frame_alloc(dev, len);
+ fp = _fc_frame_alloc(len);
return fp;
}
diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index d67dda2b6aa..66d377b9c72 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -311,6 +311,8 @@ enum iscsi_param {
ISCSI_PARAM_IFACE_NAME,
ISCSI_PARAM_ISID,
ISCSI_PARAM_INITIATOR_NAME,
+
+ ISCSI_PARAM_TGT_RESET_TMO,
/* must always be last */
ISCSI_PARAM_MAX,
};
@@ -350,6 +352,7 @@ enum iscsi_param {
#define ISCSI_IFACE_NAME (1ULL << ISCSI_PARAM_IFACE_NAME)
#define ISCSI_ISID (1ULL << ISCSI_PARAM_ISID)
#define ISCSI_INITIATOR_NAME (1ULL << ISCSI_PARAM_INITIATOR_NAME)
+#define ISCSI_TGT_RESET_TMO (1ULL << ISCSI_PARAM_TGT_RESET_TMO)
/* iSCSI HBA params */
enum iscsi_host_param {
diff --git a/include/scsi/iscsi_proto.h b/include/scsi/iscsi_proto.h
index f2a2c116948..dd0a52cea95 100644
--- a/include/scsi/iscsi_proto.h
+++ b/include/scsi/iscsi_proto.h
@@ -279,6 +279,8 @@ struct iscsi_tm {
#define ISCSI_TM_FUNC_TARGET_COLD_RESET 7
#define ISCSI_TM_FUNC_TASK_REASSIGN 8
+#define ISCSI_TM_FUNC_VALUE(hdr) ((hdr)->flags & ISCSI_FLAG_TM_FUNC_MASK)
+
/* SCSI Task Management Response Header */
struct iscsi_tm_rsp {
uint8_t opcode;
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index 65dc9aacbf7..4b912eee33e 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -26,6 +26,7 @@
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_fc.h>
+#include <scsi/scsi_bsg_fc.h>
#include <scsi/fc/fc_fcp.h>
#include <scsi/fc/fc_ns.h>
@@ -34,67 +35,6 @@
#include <scsi/fc_frame.h>
-#define FC_LIBFC_LOGGING 0x01 /* General logging, not categorized */
-#define FC_LPORT_LOGGING 0x02 /* lport layer logging */
-#define FC_DISC_LOGGING 0x04 /* discovery layer logging */
-#define FC_RPORT_LOGGING 0x08 /* rport layer logging */
-#define FC_FCP_LOGGING 0x10 /* I/O path logging */
-#define FC_EM_LOGGING 0x20 /* Exchange Manager logging */
-#define FC_EXCH_LOGGING 0x40 /* Exchange/Sequence logging */
-#define FC_SCSI_LOGGING 0x80 /* SCSI logging (mostly error handling) */
-
-extern unsigned int fc_debug_logging;
-
-#define FC_CHECK_LOGGING(LEVEL, CMD) \
-do { \
- if (unlikely(fc_debug_logging & LEVEL)) \
- do { \
- CMD; \
- } while (0); \
-} while (0)
-
-#define FC_LIBFC_DBG(fmt, args...) \
- FC_CHECK_LOGGING(FC_LIBFC_LOGGING, \
- printk(KERN_INFO "libfc: " fmt, ##args))
-
-#define FC_LPORT_DBG(lport, fmt, args...) \
- FC_CHECK_LOGGING(FC_LPORT_LOGGING, \
- printk(KERN_INFO "host%u: lport %6x: " fmt, \
- (lport)->host->host_no, \
- fc_host_port_id((lport)->host), ##args))
-
-#define FC_DISC_DBG(disc, fmt, args...) \
- FC_CHECK_LOGGING(FC_DISC_LOGGING, \
- printk(KERN_INFO "host%u: disc: " fmt, \
- (disc)->lport->host->host_no, \
- ##args))
-
-#define FC_RPORT_ID_DBG(lport, port_id, fmt, args...) \
- FC_CHECK_LOGGING(FC_RPORT_LOGGING, \
- printk(KERN_INFO "host%u: rport %6x: " fmt, \
- (lport)->host->host_no, \
- (port_id), ##args))
-
-#define FC_RPORT_DBG(rdata, fmt, args...) \
- FC_RPORT_ID_DBG((rdata)->local_port, (rdata)->ids.port_id, fmt, ##args)
-
-#define FC_FCP_DBG(pkt, fmt, args...) \
- FC_CHECK_LOGGING(FC_FCP_LOGGING, \
- printk(KERN_INFO "host%u: fcp: %6x: " fmt, \
- (pkt)->lp->host->host_no, \
- pkt->rport->port_id, ##args))
-
-#define FC_EXCH_DBG(exch, fmt, args...) \
- FC_CHECK_LOGGING(FC_EXCH_LOGGING, \
- printk(KERN_INFO "host%u: xid %4x: " fmt, \
- (exch)->lp->host->host_no, \
- exch->xid, ##args))
-
-#define FC_SCSI_DBG(lport, fmt, args...) \
- FC_CHECK_LOGGING(FC_SCSI_LOGGING, \
- printk(KERN_INFO "host%u: scsi: " fmt, \
- (lport)->host->host_no, ##args))
-
/*
* libfc error codes
*/
@@ -115,15 +55,28 @@ do { \
p[2] = ((v) & 0xFF); \
} while (0)
-/*
- * FC HBA status
+/**
+ * enum fc_lport_state - Local port states
+ * @LPORT_ST_DISABLED: Disabled
+ * @LPORT_ST_FLOGI: Fabric login (FLOGI) sent
+ * @LPORT_ST_DNS: Waiting for name server remote port to become ready
+ * @LPORT_ST_RPN_ID: Register port name by ID (RPN_ID) sent
+ * @LPORT_ST_RFT_ID: Register Fibre Channel types by ID (RFT_ID) sent
+ * @LPORT_ST_RFF_ID: Register FC-4 Features by ID (RFF_ID) sent
+ * @LPORT_ST_SCR: State Change Register (SCR) sent
+ * @LPORT_ST_READY: Ready for use
+ * @LPORT_ST_LOGO: Local port logout (LOGO) sent
+ * @LPORT_ST_RESET: Local port reset
*/
enum fc_lport_state {
LPORT_ST_DISABLED = 0,
LPORT_ST_FLOGI,
LPORT_ST_DNS,
- LPORT_ST_RPN_ID,
+ LPORT_ST_RNN_ID,
+ LPORT_ST_RSNN_NN,
+ LPORT_ST_RSPN_ID,
LPORT_ST_RFT_ID,
+ LPORT_ST_RFF_ID,
LPORT_ST_SCR,
LPORT_ST_READY,
LPORT_ST_LOGO,
@@ -136,15 +89,28 @@ enum fc_disc_event {
DISC_EV_FAILED
};
+/**
+ * enum fc_rport_state - Remote port states
+ * @RPORT_ST_INIT: Initialized
+ * @RPORT_ST_PLOGI: Waiting for PLOGI completion
+ * @RPORT_ST_PRLI: Waiting for PRLI completion
+ * @RPORT_ST_RTV: Waiting for RTV completion
+ * @RPORT_ST_READY: Ready for use
+ * @RPORT_ST_LOGO: Remote port logout (LOGO) sent
+ * @RPORT_ST_ADISC: Discover Address sent
+ * @RPORT_ST_DELETE: Remote port being deleted
+ * @RPORT_ST_RESTART: Remote port being deleted and will restart
+*/
enum fc_rport_state {
- RPORT_ST_INIT, /* initialized */
- RPORT_ST_PLOGI, /* waiting for PLOGI completion */
- RPORT_ST_PRLI, /* waiting for PRLI completion */
- RPORT_ST_RTV, /* waiting for RTV completion */
- RPORT_ST_READY, /* ready for use */
- RPORT_ST_LOGO, /* port logout sent */
- RPORT_ST_ADISC, /* Discover Address sent */
- RPORT_ST_DELETE, /* port being deleted */
+ RPORT_ST_INIT,
+ RPORT_ST_PLOGI,
+ RPORT_ST_PRLI,
+ RPORT_ST_RTV,
+ RPORT_ST_READY,
+ RPORT_ST_LOGO,
+ RPORT_ST_ADISC,
+ RPORT_ST_DELETE,
+ RPORT_ST_RESTART,
};
/**
@@ -155,12 +121,20 @@ enum fc_rport_state {
* @port_id: Port ID of the discovered port
*/
struct fc_disc_port {
- struct fc_lport *lp;
- struct list_head peers;
- struct work_struct rport_work;
- u32 port_id;
+ struct fc_lport *lp;
+ struct list_head peers;
+ struct work_struct rport_work;
+ u32 port_id;
};
+/**
+ * enum fc_rport_event - Remote port events
+ * @RPORT_EV_NONE: No event
+ * @RPORT_EV_READY: Remote port is ready for use
+ * @RPORT_EV_FAILED: State machine failed, remote port is not ready
+ * @RPORT_EV_STOP: Remote port has been stopped
+ * @RPORT_EV_LOGO: Remote port logout (LOGO) sent
+ */
enum fc_rport_event {
RPORT_EV_NONE = 0,
RPORT_EV_READY,
@@ -171,6 +145,10 @@ enum fc_rport_event {
struct fc_rport_priv;
+/**
+ * struct fc_rport_operations - Operations for a remote port
+ * @event_callback: Function to be called for remote port events
+ */
struct fc_rport_operations {
void (*event_callback)(struct fc_lport *, struct fc_rport_priv *,
enum fc_rport_event);
@@ -178,11 +156,11 @@ struct fc_rport_operations {
/**
* struct fc_rport_libfc_priv - libfc internal information about a remote port
- * @local_port: Fibre Channel host port instance
- * @rp_state: indicates READY for I/O or DELETE when blocked.
- * @flags: REC and RETRY supported flags
- * @e_d_tov: error detect timeout value (in msec)
- * @r_a_tov: resource allocation timeout value (in msec)
+ * @local_port: The associated local port
+ * @rp_state: Indicates READY for I/O or DELETE when blocked
+ * @flags: REC and RETRY supported flags
+ * @e_d_tov: Error detect timeout value (in msec)
+ * @r_a_tov: Resource allocation timeout value (in msec)
*/
struct fc_rport_libfc_priv {
struct fc_lport *local_port;
@@ -195,47 +173,66 @@ struct fc_rport_libfc_priv {
};
/**
- * struct fc_rport_priv - libfc rport and discovery info about a remote port
- * @local_port: Fibre Channel host port instance
- * @rport: transport remote port
- * @kref: reference counter
- * @rp_state: state tracks progress of PLOGI, PRLI, and RTV exchanges
- * @ids: remote port identifiers and roles
- * @flags: REC and RETRY supported flags
- * @max_seq: maximum number of concurrent sequences
- * @disc_id: discovery identifier
- * @maxframe_size: maximum frame size
- * @retries: retry count in current state
- * @e_d_tov: error detect timeout value (in msec)
- * @r_a_tov: resource allocation timeout value (in msec)
- * @rp_mutex: mutex protects rport
- * @retry_work:
- * @event_callback: Callback for rport READY, FAILED or LOGO
+ * struct fc_rport_priv - libfc remote port and discovery info
+ * @local_port: The associated local port
+ * @rport: The FC transport remote port
+ * @kref: Reference counter
+ * @rp_state: Enumeration that tracks progress of PLOGI, PRLI,
+ * and RTV exchanges
+ * @ids: The remote port identifiers and roles
+ * @flags: REC and RETRY supported flags
+ * @max_seq: Maximum number of concurrent sequences
+ * @disc_id: The discovery identifier
+ * @maxframe_size: The maximum frame size
+ * @retries: The retry count for the current state
+ * @e_d_tov: Error detect timeout value (in msec)
+ * @r_a_tov: Resource allocation timeout value (in msec)
+ * @rp_mutex: The mutex that protects the remote port
+ * @retry_work: Handle for retries
+ * @event_callback: Callback when READY, FAILED or LOGO states complete
*/
struct fc_rport_priv {
- struct fc_lport *local_port;
- struct fc_rport *rport;
- struct kref kref;
- enum fc_rport_state rp_state;
+ struct fc_lport *local_port;
+ struct fc_rport *rport;
+ struct kref kref;
+ enum fc_rport_state rp_state;
struct fc_rport_identifiers ids;
- u16 flags;
- u16 max_seq;
- u16 disc_id;
- u16 maxframe_size;
- unsigned int retries;
- unsigned int e_d_tov;
- unsigned int r_a_tov;
- struct mutex rp_mutex;
- struct delayed_work retry_work;
- enum fc_rport_event event;
- struct fc_rport_operations *ops;
- struct list_head peers;
- struct work_struct event_work;
- u32 supported_classes;
+ u16 flags;
+ u16 max_seq;
+ u16 disc_id;
+ u16 maxframe_size;
+ unsigned int retries;
+ unsigned int e_d_tov;
+ unsigned int r_a_tov;
+ struct mutex rp_mutex;
+ struct delayed_work retry_work;
+ enum fc_rport_event event;
+ struct fc_rport_operations *ops;
+ struct list_head peers;
+ struct work_struct event_work;
+ u32 supported_classes;
};
-/*
- * fcoe stats structure
+/**
+ * struct fcoe_dev_stats - fcoe stats structure
+ * @SecondsSinceLastReset: Seconds since the last reset
+ * @TxFrames: Number of transmitted frames
+ * @TxWords: Number of transmitted words
+ * @RxFrames: Number of received frames
+ * @RxWords: Number of received words
+ * @ErrorFrames: Number of received error frames
+ * @DumpedFrames: Number of dumped frames
+ * @LinkFailureCount: Number of link failures
+ * @LossOfSignalCount: Number for signal losses
+ * @InvalidTxWordCount: Number of invalid transmitted words
+ * @InvalidCRCCount: Number of invalid CRCs
+ * @InputRequests: Number of input requests
+ * @OutputRequests: Number of output requests
+ * @ControlRequests: Number of control requests
+ * @InputMegabytes: Number of received megabytes
+ * @OutputMegabytes: Number of transmitted megabytes
+ * @VLinkFailureCount: Number of virtual link failures
+ * @MissDiscAdvCount: Number of missing FIP discovery advertisement
*/
struct fcoe_dev_stats {
u64 SecondsSinceLastReset;
@@ -254,12 +251,17 @@ struct fcoe_dev_stats {
u64 ControlRequests;
u64 InputMegabytes;
u64 OutputMegabytes;
+ u64 VLinkFailureCount;
+ u64 MissDiscAdvCount;
};
-/*
- * els data is used for passing ELS respone specific
- * data to send ELS response mainly using infomation
- * in exchange and sequence in EM layer.
+/**
+ * struct fc_seq_els_data - ELS data used for passing ELS specific responses
+ * @fp: The ELS frame
+ * @reason: The reason for rejection
+ * @explan: The explaination of the rejection
+ *
+ * Mainly used by the exchange manager layer.
*/
struct fc_seq_els_data {
struct fc_frame *fp;
@@ -267,77 +269,87 @@ struct fc_seq_els_data {
enum fc_els_rjt_explan explan;
};
-/*
- * FCP request structure, one for each scsi cmd request
+/**
+ * struct fc_fcp_pkt - FCP request structure (one for each scsi_cmnd request)
+ * @lp: The associated local port
+ * @state: The state of the I/O
+ * @tgt_flags: Target's flags
+ * @ref_cnt: Reference count
+ * @scsi_pkt_lock: Lock to protect the SCSI packet (must be taken before the
+ * host_lock if both are to be held at the same time)
+ * @cmd: The SCSI command (set and clear with the host_lock held)
+ * @list: Tracks queued commands (accessed with the host_lock held)
+ * @timer: The command timer
+ * @tm_done: Completion indicator
+ * @wait_for_comp: Indicator to wait for completion of the I/O (in jiffies)
+ * @start_time: Timestamp indicating the start of the I/O (in jiffies)
+ * @end_time: Timestamp indicating the end of the I/O (in jiffies)
+ * @last_pkt_time: Timestamp of the last frame received (in jiffies)
+ * @data_len: The length of the data
+ * @cdb_cmd: The CDB command
+ * @xfer_len: The transfer length
+ * @xfer_ddp: Indicates if this transfer used DDP (XID of the exchange
+ * will be set here if DDP was setup)
+ * @xfer_contig_end: The offset into the buffer if the buffer is contiguous
+ * (Tx and Rx)
+ * @max_payload: The maximum payload size (in bytes)
+ * @io_status: SCSI result (upper 24 bits)
+ * @cdb_status: CDB status
+ * @status_code: FCP I/O status
+ * @scsi_comp_flags: Completion flags (bit 3 Underrun bit 2: overrun)
+ * @req_flags: Request flags (bit 0: read bit:1 write)
+ * @scsi_resid: SCSI residule length
+ * @rport: The remote port that the SCSI command is targeted at
+ * @seq_ptr: The sequence that will carry the SCSI command
+ * @recov_retry: Number of recovery retries
+ * @recov_seq: The sequence for REC or SRR
*/
struct fc_fcp_pkt {
- /*
- * housekeeping stuff
- */
- struct fc_lport *lp; /* handle to hba struct */
- u16 state; /* scsi_pkt state state */
- u16 tgt_flags; /* target flags */
- atomic_t ref_cnt; /* fcp pkt ref count */
- spinlock_t scsi_pkt_lock; /* Must be taken before the host lock
- * if both are held at the same time */
- /*
- * SCSI I/O related stuff
- */
- struct scsi_cmnd *cmd; /* scsi command pointer. set/clear
- * under host lock */
- struct list_head list; /* tracks queued commands. access under
- * host lock */
- /*
- * timeout related stuff
- */
- struct timer_list timer; /* command timer */
+ /* Housekeeping information */
+ struct fc_lport *lp;
+ u16 state;
+ u16 tgt_flags;
+ atomic_t ref_cnt;
+ spinlock_t scsi_pkt_lock;
+
+ /* SCSI I/O related information */
+ struct scsi_cmnd *cmd;
+ struct list_head list;
+
+ /* Timeout related information */
+ struct timer_list timer;
struct completion tm_done;
- int wait_for_comp;
- unsigned long start_time; /* start jiffie */
- unsigned long end_time; /* end jiffie */
- unsigned long last_pkt_time; /* jiffies of last frame received */
-
- /*
- * scsi cmd and data transfer information
- */
- u32 data_len;
- /*
- * transport related veriables
- */
- struct fcp_cmnd cdb_cmd;
- size_t xfer_len;
- u16 xfer_ddp; /* this xfer is ddped */
- u32 xfer_contig_end; /* offset of end of contiguous xfer */
- u16 max_payload; /* max payload size in bytes */
-
- /*
- * scsi/fcp return status
- */
- u32 io_status; /* SCSI result upper 24 bits */
- u8 cdb_status;
- u8 status_code; /* FCP I/O status */
- /* bit 3 Underrun bit 2: overrun */
- u8 scsi_comp_flags;
- u32 req_flags; /* bit 0: read bit:1 write */
- u32 scsi_resid; /* residule length */
-
- struct fc_rport *rport; /* remote port pointer */
- struct fc_seq *seq_ptr; /* current sequence pointer */
- /*
- * Error Processing
- */
- u8 recov_retry; /* count of recovery retries */
- struct fc_seq *recov_seq; /* sequence for REC or SRR */
+ int wait_for_comp;
+ unsigned long start_time;
+ unsigned long end_time;
+ unsigned long last_pkt_time;
+
+ /* SCSI command and data transfer information */
+ u32 data_len;
+
+ /* Transport related veriables */
+ struct fcp_cmnd cdb_cmd;
+ size_t xfer_len;
+ u16 xfer_ddp;
+ u32 xfer_contig_end;
+ u16 max_payload;
+
+ /* SCSI/FCP return status */
+ u32 io_status;
+ u8 cdb_status;
+ u8 status_code;
+ u8 scsi_comp_flags;
+ u32 req_flags;
+ u32 scsi_resid;
+
+ /* Associated structures */
+ struct fc_rport *rport;
+ struct fc_seq *seq_ptr;
+
+ /* Error Processing information */
+ u8 recov_retry;
+ struct fc_seq *recov_seq;
};
-/*
- * FC_FCP HELPER FUNCTIONS
- *****************************/
-static inline bool fc_fcp_is_read(const struct fc_fcp_pkt *fsp)
-{
- if (fsp && fsp->cmd)
- return fsp->cmd->sc_data_direction == DMA_FROM_DEVICE;
- return false;
-}
/*
* Structure and function definitions for managing Fibre Channel Exchanges
@@ -350,23 +362,51 @@ static inline bool fc_fcp_is_read(const struct fc_fcp_pkt *fsp)
struct fc_exch_mgr;
struct fc_exch_mgr_anchor;
-extern u16 fc_cpu_mask; /* cpu mask for possible cpus */
+extern u16 fc_cpu_mask; /* cpu mask for possible cpus */
-/*
- * Sequence.
+/**
+ * struct fc_seq - FC sequence
+ * @id: The sequence ID
+ * @ssb_stat: Status flags for the sequence status block (SSB)
+ * @cnt: Number of frames sent so far
+ * @rec_data: FC-4 value for REC
*/
struct fc_seq {
- u8 id; /* seq ID */
- u16 ssb_stat; /* status flags for sequence status block */
- u16 cnt; /* frames sent so far on sequence */
- u32 rec_data; /* FC-4 value for REC */
+ u8 id;
+ u16 ssb_stat;
+ u16 cnt;
+ u32 rec_data;
};
#define FC_EX_DONE (1 << 0) /* ep is completed */
#define FC_EX_RST_CLEANUP (1 << 1) /* reset is forcing completion */
-/*
- * Exchange.
+/**
+ * struct fc_exch - Fibre Channel Exchange
+ * @em: Exchange manager
+ * @pool: Exchange pool
+ * @state: The exchange's state
+ * @xid: The exchange ID
+ * @ex_list: Handle used by the EM to track free exchanges
+ * @ex_lock: Lock that protects the exchange
+ * @ex_refcnt: Reference count
+ * @timeout_work: Handle for timeout handler
+ * @lp: The local port that this exchange is on
+ * @oxid: Originator's exchange ID
+ * @rxid: Responder's exchange ID
+ * @oid: Originator's FCID
+ * @sid: Source FCID
+ * @did: Destination FCID
+ * @esb_stat: ESB exchange status
+ * @r_a_tov: Resouce allocation time out value (in msecs)
+ * @seq_id: The next sequence ID to use
+ * @f_ctl: F_CTL flags for the sequence
+ * @fh_type: The frame type
+ * @class: The class of service
+ * @seq: The sequence in use on this exchange
+ * @resp: Callback for responses on this exchange
+ * @destructor: Called when destroying the exchange
+ * @arg: Passed as a void pointer to the resp() callback
*
* Locking notes: The ex_lock protects following items:
* state, esb_stat, f_ctl, seq.ssb_stat
@@ -374,76 +414,59 @@ struct fc_seq {
* sequence allocation
*/
struct fc_exch {
- struct fc_exch_mgr *em; /* exchange manager */
- struct fc_exch_pool *pool; /* per cpu exches pool */
- u32 state; /* internal driver state */
- u16 xid; /* our exchange ID */
- struct list_head ex_list; /* free or busy list linkage */
- spinlock_t ex_lock; /* lock covering exchange state */
- atomic_t ex_refcnt; /* reference counter */
- struct delayed_work timeout_work; /* timer for upper level protocols */
- struct fc_lport *lp; /* fc device instance */
- u16 oxid; /* originator's exchange ID */
- u16 rxid; /* responder's exchange ID */
- u32 oid; /* originator's FCID */
- u32 sid; /* source FCID */
- u32 did; /* destination FCID */
- u32 esb_stat; /* exchange status for ESB */
- u32 r_a_tov; /* r_a_tov from rport (msec) */
- u8 seq_id; /* next sequence ID to use */
- u32 f_ctl; /* F_CTL flags for sequences */
- u8 fh_type; /* frame type */
- enum fc_class class; /* class of service */
- struct fc_seq seq; /* single sequence */
- /*
- * Handler for responses to this current exchange.
- */
- void (*resp)(struct fc_seq *, struct fc_frame *, void *);
- void (*destructor)(struct fc_seq *, void *);
- /*
- * arg is passed as void pointer to exchange
- * resp and destructor handlers
- */
- void *arg;
+ struct fc_exch_mgr *em;
+ struct fc_exch_pool *pool;
+ u32 state;
+ u16 xid;
+ struct list_head ex_list;
+ spinlock_t ex_lock;
+ atomic_t ex_refcnt;
+ struct delayed_work timeout_work;
+ struct fc_lport *lp;
+ u16 oxid;
+ u16 rxid;
+ u32 oid;
+ u32 sid;
+ u32 did;
+ u32 esb_stat;
+ u32 r_a_tov;
+ u8 seq_id;
+ u32 f_ctl;
+ u8 fh_type;
+ enum fc_class class;
+ struct fc_seq seq;
+
+ void (*resp)(struct fc_seq *, struct fc_frame *, void *);
+ void *arg;
+
+ void (*destructor)(struct fc_seq *, void *);
+
};
#define fc_seq_exch(sp) container_of(sp, struct fc_exch, seq)
-struct libfc_function_template {
+struct libfc_function_template {
/*
* Interface to send a FC frame
*
* STATUS: REQUIRED
*/
- int (*frame_send)(struct fc_lport *lp, struct fc_frame *fp);
+ int (*frame_send)(struct fc_lport *, struct fc_frame *);
/*
* Interface to send ELS/CT frames
*
* STATUS: OPTIONAL
*/
- struct fc_seq *(*elsct_send)(struct fc_lport *lport,
- u32 did,
- struct fc_frame *fp,
- unsigned int op,
+ struct fc_seq *(*elsct_send)(struct fc_lport *, u32 did,
+ struct fc_frame *, unsigned int op,
void (*resp)(struct fc_seq *,
- struct fc_frame *fp,
- void *arg),
+ struct fc_frame *, void *arg),
void *arg, u32 timer_msec);
/*
* Send the FC frame payload using a new exchange and sequence.
*
- * The frame pointer with some of the header's fields must be
- * filled before calling exch_seq_send(), those fields are,
- *
- * - routing control
- * - FC port did
- * - FC port sid
- * - FC header type
- * - frame control
- * - parameter or relative offset
- *
* The exchange response handler is set in this routine to resp()
* function pointer. It can be called in two scenarios: if a timeout
* occurs or if a response frame is received for the exchange. The
@@ -464,14 +487,13 @@ struct libfc_function_template {
*
* STATUS: OPTIONAL
*/
- struct fc_seq *(*exch_seq_send)(struct fc_lport *lp,
- struct fc_frame *fp,
- void (*resp)(struct fc_seq *sp,
- struct fc_frame *fp,
- void *arg),
- void (*destructor)(struct fc_seq *sp,
- void *arg),
- void *arg, unsigned int timer_msec);
+ struct fc_seq *(*exch_seq_send)(struct fc_lport *, struct fc_frame *,
+ void (*resp)(struct fc_seq *,
+ struct fc_frame *,
+ void *),
+ void (*destructor)(struct fc_seq *,
+ void *),
+ void *, unsigned int timer_msec);
/*
* Sets up the DDP context for a given exchange id on the given
@@ -479,22 +501,28 @@ struct libfc_function_template {
*
* STATUS: OPTIONAL
*/
- int (*ddp_setup)(struct fc_lport *lp, u16 xid,
- struct scatterlist *sgl, unsigned int sgc);
+ int (*ddp_setup)(struct fc_lport *, u16, struct scatterlist *,
+ unsigned int);
/*
* Completes the DDP transfer and returns the length of data DDPed
* for the given exchange id.
*
* STATUS: OPTIONAL
*/
- int (*ddp_done)(struct fc_lport *lp, u16 xid);
+ int (*ddp_done)(struct fc_lport *, u16);
+ /*
+ * Allow LLD to fill its own Link Error Status Block
+ *
+ * STATUS: OPTIONAL
+ */
+ void (*get_lesb)(struct fc_lport *, struct fc_els_lesb *lesb);
/*
* Send a frame using an existing sequence and exchange.
*
* STATUS: OPTIONAL
*/
- int (*seq_send)(struct fc_lport *lp, struct fc_seq *sp,
- struct fc_frame *fp);
+ int (*seq_send)(struct fc_lport *, struct fc_seq *,
+ struct fc_frame *);
/*
* Send an ELS response using infomation from a previous
@@ -502,8 +530,8 @@ struct libfc_function_template {
*
* STATUS: OPTIONAL
*/
- void (*seq_els_rsp_send)(struct fc_seq *sp, enum fc_els_cmd els_cmd,
- struct fc_seq_els_data *els_data);
+ void (*seq_els_rsp_send)(struct fc_seq *, enum fc_els_cmd,
+ struct fc_seq_els_data *);
/*
* Abort an exchange and sequence. Generally called because of a
@@ -515,7 +543,7 @@ struct libfc_function_template {
*
* STATUS: OPTIONAL
*/
- int (*seq_exch_abort)(const struct fc_seq *req_sp,
+ int (*seq_exch_abort)(const struct fc_seq *,
unsigned int timer_msec);
/*
@@ -524,14 +552,14 @@ struct libfc_function_template {
*
* STATUS: OPTIONAL
*/
- void (*exch_done)(struct fc_seq *sp);
+ void (*exch_done)(struct fc_seq *);
/*
* Start a new sequence on the same exchange/sequence tuple.
*
* STATUS: OPTIONAL
*/
- struct fc_seq *(*seq_start_next)(struct fc_seq *sp);
+ struct fc_seq *(*seq_start_next)(struct fc_seq *);
/*
* Reset an exchange manager, completing all sequences and exchanges.
@@ -540,8 +568,7 @@ struct libfc_function_template {
*
* STATUS: OPTIONAL
*/
- void (*exch_mgr_reset)(struct fc_lport *,
- u32 s_id, u32 d_id);
+ void (*exch_mgr_reset)(struct fc_lport *, u32 s_id, u32 d_id);
/*
* Flush the rport work queue. Generally used before shutdown.
@@ -555,8 +582,8 @@ struct libfc_function_template {
*
* STATUS: OPTIONAL
*/
- void (*lport_recv)(struct fc_lport *lp, struct fc_seq *sp,
- struct fc_frame *fp);
+ void (*lport_recv)(struct fc_lport *, struct fc_seq *,
+ struct fc_frame *);
/*
* Reset the local port.
@@ -566,6 +593,26 @@ struct libfc_function_template {
int (*lport_reset)(struct fc_lport *);
/*
+ * Set the local port FC_ID.
+ *
+ * This may be provided by the LLD to allow it to be
+ * notified when the local port is assigned a FC-ID.
+ *
+ * The frame, if non-NULL, is the incoming frame with the
+ * FLOGI LS_ACC or FLOGI, and may contain the granted MAC
+ * address for the LLD. The frame pointer may be NULL if
+ * no MAC is associated with this assignment (LOGO or PLOGI).
+ *
+ * If FC_ID is non-zero, r_a_tov and e_d_tov must be valid.
+ *
+ * Note: this is called with the local port mutex held.
+ *
+ * STATUS: OPTIONAL
+ */
+ void (*lport_set_port_id)(struct fc_lport *, u32 port_id,
+ struct fc_frame *);
+
+ /*
* Create a remote port with a given port ID
*
* STATUS: OPTIONAL
@@ -622,31 +669,31 @@ struct libfc_function_template {
*
* STATUS: OPTIONAL
*/
- int (*fcp_cmd_send)(struct fc_lport *lp, struct fc_fcp_pkt *fsp,
- void (*resp)(struct fc_seq *, struct fc_frame *fp,
- void *arg));
+ int (*fcp_cmd_send)(struct fc_lport *, struct fc_fcp_pkt *,
+ void (*resp)(struct fc_seq *, struct fc_frame *,
+ void *));
/*
* Cleanup the FCP layer, used durring link down and reset
*
* STATUS: OPTIONAL
*/
- void (*fcp_cleanup)(struct fc_lport *lp);
+ void (*fcp_cleanup)(struct fc_lport *);
/*
* Abort all I/O on a local port
*
* STATUS: OPTIONAL
*/
- void (*fcp_abort_io)(struct fc_lport *lp);
+ void (*fcp_abort_io)(struct fc_lport *);
/*
* Receive a request for the discovery layer.
*
* STATUS: OPTIONAL
*/
- void (*disc_recv_req)(struct fc_seq *,
- struct fc_frame *, struct fc_lport *);
+ void (*disc_recv_req)(struct fc_seq *, struct fc_frame *,
+ struct fc_lport *);
/*
* Start discovery for a local port.
@@ -675,419 +722,340 @@ struct libfc_function_template {
void (*disc_stop_final) (struct fc_lport *);
};
-/* information used by the discovery layer */
+/**
+ * struct fc_disc - Discovery context
+ * @retry_count: Number of retries
+ * @pending: 1 if discovery is pending, 0 if not
+ * @requesting: 1 if discovery has been requested, 0 if not
+ * @seq_count: Number of sequences used for discovery
+ * @buf_len: Length of the discovery buffer
+ * @disc_id: Discovery ID
+ * @rports: List of discovered remote ports
+ * @lport: The local port that discovery is for
+ * @disc_mutex: Mutex that protects the discovery context
+ * @partial_buf: Partial name buffer (if names are returned
+ * in multiple frames)
+ * @disc_work: handle for delayed work context
+ * @disc_callback: Callback routine called when discovery completes
+ */
struct fc_disc {
- unsigned char retry_count;
- unsigned char pending;
- unsigned char requested;
- unsigned short seq_count;
- unsigned char buf_len;
- u16 disc_id;
+ unsigned char retry_count;
+ unsigned char pending;
+ unsigned char requested;
+ unsigned short seq_count;
+ unsigned char buf_len;
+ u16 disc_id;
+
+ struct list_head rports;
+ struct fc_lport *lport;
+ struct mutex disc_mutex;
+ struct fc_gpn_ft_resp partial_buf;
+ struct delayed_work disc_work;
void (*disc_callback)(struct fc_lport *,
enum fc_disc_event);
-
- struct list_head rports;
- struct fc_lport *lport;
- struct mutex disc_mutex;
- struct fc_gpn_ft_resp partial_buf; /* partial name buffer */
- struct delayed_work disc_work;
};
+/**
+ * struct fc_lport - Local port
+ * @host: The SCSI host associated with a local port
+ * @ema_list: Exchange manager anchor list
+ * @dns_rdata: The directory server remote port
+ * @ptp_rdata: Point to point remote port
+ * @scsi_priv: FCP layer internal data
+ * @disc: Discovery context
+ * @vports: Child vports if N_Port
+ * @vport: Parent vport if VN_Port
+ * @tt: Libfc function template
+ * @link_up: Link state (1 = link up, 0 = link down)
+ * @qfull: Queue state (1 queue is full, 0 queue is not full)
+ * @state: Identifies the state
+ * @boot_time: Timestamp indicating when the local port came online
+ * @host_stats: SCSI host statistics
+ * @dev_stats: FCoE device stats (TODO: libfc should not be
+ * FCoE aware)
+ * @retry_count: Number of retries in the current state
+ * @wwpn: World Wide Port Name
+ * @wwnn: World Wide Node Name
+ * @service_params: Common service parameters
+ * @e_d_tov: Error detection timeout value
+ * @r_a_tov: Resouce allocation timeout value
+ * @rnid_gen: RNID information
+ * @sg_supp: Indicates if scatter gather is supported
+ * @seq_offload: Indicates if sequence offload is supported
+ * @crc_offload: Indicates if CRC offload is supported
+ * @lro_enabled: Indicates if large receive offload is supported
+ * @does_npiv: Supports multiple vports
+ * @npiv_enabled: Switch/fabric allows NPIV
+ * @mfs: The maximum Fibre Channel payload size
+ * @max_retry_count: The maximum retry attempts
+ * @max_rport_retry_count: The maximum remote port retry attempts
+ * @lro_xid: The maximum XID for LRO
+ * @lso_max: The maximum large offload send size
+ * @fcts: FC-4 type mask
+ * @lp_mutex: Mutex to protect the local port
+ * @list: Handle for list of local ports
+ * @retry_work: Handle to local port for delayed retry context
+ */
struct fc_lport {
- struct list_head list;
-
/* Associations */
- struct Scsi_Host *host;
- struct list_head ema_list;
- struct fc_rport_priv *dns_rp;
- struct fc_rport_priv *ptp_rp;
- void *scsi_priv;
- struct fc_disc disc;
+ struct Scsi_Host *host;
+ struct list_head ema_list;
+ struct fc_rport_priv *dns_rdata;
+ struct fc_rport_priv *ptp_rdata;
+ void *scsi_priv;
+ struct fc_disc disc;
+
+ /* Virtual port information */
+ struct list_head vports;
+ struct fc_vport *vport;
/* Operational Information */
struct libfc_function_template tt;
- u8 link_up;
- u8 qfull;
- enum fc_lport_state state;
- unsigned long boot_time;
-
- struct fc_host_statistics host_stats;
- struct fcoe_dev_stats *dev_stats;
-
- u64 wwpn;
- u64 wwnn;
- u8 retry_count;
+ u8 link_up;
+ u8 qfull;
+ enum fc_lport_state state;
+ unsigned long boot_time;
+ struct fc_host_statistics host_stats;
+ struct fcoe_dev_stats *dev_stats;
+ u8 retry_count;
+
+ /* Fabric information */
+ u64 wwpn;
+ u64 wwnn;
+ unsigned int service_params;
+ unsigned int e_d_tov;
+ unsigned int r_a_tov;
+ struct fc_els_rnid_gen rnid_gen;
/* Capabilities */
- u32 sg_supp:1; /* scatter gather supported */
- u32 seq_offload:1; /* seq offload supported */
- u32 crc_offload:1; /* crc offload supported */
- u32 lro_enabled:1; /* large receive offload */
- u32 mfs; /* max FC payload size */
- unsigned int service_params;
- unsigned int e_d_tov;
- unsigned int r_a_tov;
- u8 max_retry_count;
- u8 max_rport_retry_count;
- u16 link_speed;
- u16 link_supported_speeds;
- u16 lro_xid; /* max xid for fcoe lro */
- unsigned int lso_max; /* max large send size */
- struct fc_ns_fts fcts; /* FC-4 type masks */
- struct fc_els_rnid_gen rnid_gen; /* RNID information */
-
- /* Semaphores */
- struct mutex lp_mutex;
+ u32 sg_supp:1;
+ u32 seq_offload:1;
+ u32 crc_offload:1;
+ u32 lro_enabled:1;
+ u32 does_npiv:1;
+ u32 npiv_enabled:1;
+ u32 mfs;
+ u8 max_retry_count;
+ u8 max_rport_retry_count;
+ u16 link_speed;
+ u16 link_supported_speeds;
+ u16 lro_xid;
+ unsigned int lso_max;
+ struct fc_ns_fts fcts;
/* Miscellaneous */
- struct delayed_work retry_work;
- struct delayed_work disc_work;
+ struct mutex lp_mutex;
+ struct list_head list;
+ struct delayed_work retry_work;
};
/*
* FC_LPORT HELPER FUNCTIONS
*****************************/
-static inline int fc_lport_test_ready(struct fc_lport *lp)
+
+/**
+ * fc_lport_test_ready() - Determine if a local port is in the READY state
+ * @lport: The local port to test
+ */
+static inline int fc_lport_test_ready(struct fc_lport *lport)
{
- return lp->state == LPORT_ST_READY;
+ return lport->state == LPORT_ST_READY;
}
-static inline void fc_set_wwnn(struct fc_lport *lp, u64 wwnn)
+/**
+ * fc_set_wwnn() - Set the World Wide Node Name of a local port
+ * @lport: The local port whose WWNN is to be set
+ * @wwnn: The new WWNN
+ */
+static inline void fc_set_wwnn(struct fc_lport *lport, u64 wwnn)
{
- lp->wwnn = wwnn;
+ lport->wwnn = wwnn;
}
-static inline void fc_set_wwpn(struct fc_lport *lp, u64 wwnn)
+/**
+ * fc_set_wwpn() - Set the World Wide Port Name of a local port
+ * @lport: The local port whose WWPN is to be set
+ * @wwnn: The new WWPN
+ */
+static inline void fc_set_wwpn(struct fc_lport *lport, u64 wwnn)
{
- lp->wwpn = wwnn;
+ lport->wwpn = wwnn;
}
-static inline void fc_lport_state_enter(struct fc_lport *lp,
+/**
+ * fc_lport_state_enter() - Change a local port's state
+ * @lport: The local port whose state is to change
+ * @state: The new state
+ */
+static inline void fc_lport_state_enter(struct fc_lport *lport,
enum fc_lport_state state)
{
- if (state != lp->state)
- lp->retry_count = 0;
- lp->state = state;
+ if (state != lport->state)
+ lport->retry_count = 0;
+ lport->state = state;
}
-static inline int fc_lport_init_stats(struct fc_lport *lp)
+/**
+ * fc_lport_init_stats() - Allocate per-CPU statistics for a local port
+ * @lport: The local port whose statistics are to be initialized
+ */
+static inline int fc_lport_init_stats(struct fc_lport *lport)
{
- /* allocate per cpu stats block */
- lp->dev_stats = alloc_percpu(struct fcoe_dev_stats);
- if (!lp->dev_stats)
+ lport->dev_stats = alloc_percpu(struct fcoe_dev_stats);
+ if (!lport->dev_stats)
return -ENOMEM;
return 0;
}
-static inline void fc_lport_free_stats(struct fc_lport *lp)
+/**
+ * fc_lport_free_stats() - Free memory for a local port's statistics
+ * @lport: The local port whose statistics are to be freed
+ */
+static inline void fc_lport_free_stats(struct fc_lport *lport)
{
- free_percpu(lp->dev_stats);
+ free_percpu(lport->dev_stats);
}
-static inline struct fcoe_dev_stats *fc_lport_get_stats(struct fc_lport *lp)
+/**
+ * fc_lport_get_stats() - Get a local port's statistics
+ * @lport: The local port whose statistics are to be retreived
+ */
+static inline struct fcoe_dev_stats *fc_lport_get_stats(struct fc_lport *lport)
{
- return per_cpu_ptr(lp->dev_stats, smp_processor_id());
+ return per_cpu_ptr(lport->dev_stats, smp_processor_id());
}
-static inline void *lport_priv(const struct fc_lport *lp)
+/**
+ * lport_priv() - Return the private data from a local port
+ * @lport: The local port whose private data is to be retreived
+ */
+static inline void *lport_priv(const struct fc_lport *lport)
{
- return (void *)(lp + 1);
+ return (void *)(lport + 1);
}
/**
- * libfc_host_alloc() - Allocate a Scsi_Host with room for the fc_lport
- * @sht: ptr to the scsi host templ
- * @priv_size: size of private data after fc_lport
+ * libfc_host_alloc() - Allocate a Scsi_Host with room for a local port and
+ * LLD private data
+ * @sht: The SCSI host template
+ * @priv_size: Size of private data
*
- * Returns: ptr to Scsi_Host
+ * Returns: libfc lport
*/
-static inline struct Scsi_Host *
+static inline struct fc_lport *
libfc_host_alloc(struct scsi_host_template *sht, int priv_size)
{
- return scsi_host_alloc(sht, sizeof(struct fc_lport) + priv_size);
+ struct fc_lport *lport;
+ struct Scsi_Host *shost;
+
+ shost = scsi_host_alloc(sht, sizeof(*lport) + priv_size);
+ if (!shost)
+ return NULL;
+ lport = shost_priv(shost);
+ lport->host = shost;
+ INIT_LIST_HEAD(&lport->ema_list);
+ INIT_LIST_HEAD(&lport->vports);
+ return lport;
}
/*
- * LOCAL PORT LAYER
+ * FC_FCP HELPER FUNCTIONS
*****************************/
-int fc_lport_init(struct fc_lport *lp);
-
-/*
- * Destroy the specified local port by finding and freeing all
- * fc_rports associated with it and then by freeing the fc_lport
- * itself.
- */
-int fc_lport_destroy(struct fc_lport *lp);
-
-/*
- * Logout the specified local port from the fabric
- */
-int fc_fabric_logoff(struct fc_lport *lp);
-
-/*
- * Initiate the LP state machine. This handler will use fc_host_attr
- * to store the FLOGI service parameters, so fc_host_attr must be
- * initialized before calling this handler.
- */
-int fc_fabric_login(struct fc_lport *lp);
+static inline bool fc_fcp_is_read(const struct fc_fcp_pkt *fsp)
+{
+ if (fsp && fsp->cmd)
+ return fsp->cmd->sc_data_direction == DMA_FROM_DEVICE;
+ return false;
+}
/*
- * The link is up for the given local port.
- */
+ * LOCAL PORT LAYER
+ *****************************/
+int fc_lport_init(struct fc_lport *);
+int fc_lport_destroy(struct fc_lport *);
+int fc_fabric_logoff(struct fc_lport *);
+int fc_fabric_login(struct fc_lport *);
+void __fc_linkup(struct fc_lport *);
void fc_linkup(struct fc_lport *);
-
-/*
- * Link is down for the given local port.
- */
+void __fc_linkdown(struct fc_lport *);
void fc_linkdown(struct fc_lport *);
-
-/*
- * Configure the local port.
- */
+void fc_vport_setlink(struct fc_lport *);
+void fc_vports_linkchange(struct fc_lport *);
int fc_lport_config(struct fc_lport *);
-
-/*
- * Reset the local port.
- */
int fc_lport_reset(struct fc_lport *);
-
-/*
- * Set the mfs or reset
- */
-int fc_set_mfs(struct fc_lport *lp, u32 mfs);
-
+int fc_set_mfs(struct fc_lport *, u32 mfs);
+struct fc_lport *libfc_vport_create(struct fc_vport *, int privsize);
+struct fc_lport *fc_vport_id_lookup(struct fc_lport *, u32 port_id);
+int fc_lport_bsg_request(struct fc_bsg_job *);
/*
* REMOTE PORT LAYER
*****************************/
-int fc_rport_init(struct fc_lport *lp);
-void fc_rport_terminate_io(struct fc_rport *rp);
+int fc_rport_init(struct fc_lport *);
+void fc_rport_terminate_io(struct fc_rport *);
/*
* DISCOVERY LAYER
*****************************/
-int fc_disc_init(struct fc_lport *lp);
-
+int fc_disc_init(struct fc_lport *);
/*
- * SCSI LAYER
+ * FCP LAYER
*****************************/
-/*
- * Initialize the SCSI block of libfc
- */
int fc_fcp_init(struct fc_lport *);
-
-/*
- * This section provides an API which allows direct interaction
- * with the SCSI-ml. Each of these functions satisfies a function
- * pointer defined in Scsi_Host and therefore is always called
- * directly from the SCSI-ml.
- */
-int fc_queuecommand(struct scsi_cmnd *sc_cmd,
- void (*done)(struct scsi_cmnd *));
-
-/*
- * complete processing of a fcp packet
- *
- * This function may sleep if a fsp timer is pending.
- * The host lock must not be held by caller.
- */
-void fc_fcp_complete(struct fc_fcp_pkt *fsp);
-
-/*
- * Send an ABTS frame to the target device. The sc_cmd argument
- * is a pointer to the SCSI command to be aborted.
- */
-int fc_eh_abort(struct scsi_cmnd *sc_cmd);
-
-/*
- * Reset a LUN by sending send the tm cmd to the target.
- */
-int fc_eh_device_reset(struct scsi_cmnd *sc_cmd);
-
-/*
- * Reset the host adapter.
- */
-int fc_eh_host_reset(struct scsi_cmnd *sc_cmd);
-
-/*
- * Check rport status.
- */
-int fc_slave_alloc(struct scsi_device *sdev);
-
-/*
- * Adjust the queue depth.
- */
-int fc_change_queue_depth(struct scsi_device *sdev, int qdepth);
-
-/*
- * Change the tag type.
- */
-int fc_change_queue_type(struct scsi_device *sdev, int tag_type);
-
-/*
- * Free memory pools used by the FCP layer.
- */
void fc_fcp_destroy(struct fc_lport *);
/*
- * Set up direct-data placement for this I/O request
- */
-void fc_fcp_ddp_setup(struct fc_fcp_pkt *fsp, u16 xid);
+ * SCSI INTERACTION LAYER
+ *****************************/
+int fc_queuecommand(struct scsi_cmnd *,
+ void (*done)(struct scsi_cmnd *));
+int fc_eh_abort(struct scsi_cmnd *);
+int fc_eh_device_reset(struct scsi_cmnd *);
+int fc_eh_host_reset(struct scsi_cmnd *);
+int fc_slave_alloc(struct scsi_device *);
+int fc_change_queue_depth(struct scsi_device *, int qdepth, int reason);
+int fc_change_queue_type(struct scsi_device *, int tag_type);
/*
* ELS/CT interface
*****************************/
-/*
- * Initializes ELS/CT interface
- */
-int fc_elsct_init(struct fc_lport *lp);
+int fc_elsct_init(struct fc_lport *);
+struct fc_seq *fc_elsct_send(struct fc_lport *, u32 did,
+ struct fc_frame *,
+ unsigned int op,
+ void (*resp)(struct fc_seq *,
+ struct fc_frame *,
+ void *arg),
+ void *arg, u32 timer_msec);
+void fc_lport_flogi_resp(struct fc_seq *, struct fc_frame *, void *);
+void fc_lport_logo_resp(struct fc_seq *, struct fc_frame *, void *);
/*
* EXCHANGE MANAGER LAYER
*****************************/
-/*
- * Initializes Exchange Manager related
- * function pointers in struct libfc_function_template.
- */
-int fc_exch_init(struct fc_lport *lp);
-
-/*
- * Adds Exchange Manager (EM) mp to lport.
- *
- * Adds specified mp to lport using struct fc_exch_mgr_anchor,
- * the struct fc_exch_mgr_anchor allows same EM sharing by
- * more than one lport with their specified match function,
- * the match function is used in allocating exchange from
- * added mp.
- */
-struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *lport,
- struct fc_exch_mgr *mp,
+int fc_exch_init(struct fc_lport *);
+struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *,
+ struct fc_exch_mgr *,
bool (*match)(struct fc_frame *));
-
-/*
- * Deletes Exchange Manager (EM) from lport by removing
- * its anchor ema from lport.
- *
- * If removed anchor ema was the last user of its associated EM
- * then also destroys associated EM.
- */
-void fc_exch_mgr_del(struct fc_exch_mgr_anchor *ema);
-
-/*
- * Allocates an Exchange Manager (EM).
- *
- * The EM manages exchanges for their allocation and
- * free, also allows exchange lookup for received
- * frame.
- *
- * The class is used for initializing FC class of
- * allocated exchange from EM.
- *
- * The min_xid and max_xid will limit new
- * exchange ID (XID) within this range for
- * a new exchange.
- * The LLD may choose to have multiple EMs,
- * e.g. one EM instance per CPU receive thread in LLD.
- *
- * Specified match function is used in allocating exchanges
- * from newly allocated EM.
- */
-struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *lp,
- enum fc_class class,
- u16 min_xid,
- u16 max_xid,
+void fc_exch_mgr_del(struct fc_exch_mgr_anchor *);
+int fc_exch_mgr_list_clone(struct fc_lport *src, struct fc_lport *dst);
+struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *, enum fc_class class,
+ u16 min_xid, u16 max_xid,
bool (*match)(struct fc_frame *));
-
-/*
- * Free all exchange managers of a lport.
- */
-void fc_exch_mgr_free(struct fc_lport *lport);
-
-/*
- * Receive a frame on specified local port and exchange manager.
- */
-void fc_exch_recv(struct fc_lport *lp, struct fc_frame *fp);
-
-/*
- * This function is for exch_seq_send function pointer in
- * struct libfc_function_template, see comment block on
- * exch_seq_send for description of this function.
- */
-struct fc_seq *fc_exch_seq_send(struct fc_lport *lp,
- struct fc_frame *fp,
- void (*resp)(struct fc_seq *sp,
- struct fc_frame *fp,
- void *arg),
- void (*destructor)(struct fc_seq *sp,
- void *arg),
- void *arg, u32 timer_msec);
-
-/*
- * send a frame using existing sequence and exchange.
- */
-int fc_seq_send(struct fc_lport *lp, struct fc_seq *sp, struct fc_frame *fp);
-
-/*
- * Send ELS response using mainly infomation
- * in exchange and sequence in EM layer.
- */
-void fc_seq_els_rsp_send(struct fc_seq *sp, enum fc_els_cmd els_cmd,
- struct fc_seq_els_data *els_data);
-
-/*
- * This function is for seq_exch_abort function pointer in
- * struct libfc_function_template, see comment block on
- * seq_exch_abort for description of this function.
- */
-int fc_seq_exch_abort(const struct fc_seq *req_sp, unsigned int timer_msec);
-
-/*
- * Indicate that an exchange/sequence tuple is complete and the memory
- * allocated for the related objects may be freed.
- */
-void fc_exch_done(struct fc_seq *sp);
-
-/*
- * Allocate a new exchange and sequence pair.
- */
-struct fc_exch *fc_exch_alloc(struct fc_lport *lport, struct fc_frame *fp);
-/*
- * Start a new sequence on the same exchange as the supplied sequence.
- */
-struct fc_seq *fc_seq_start_next(struct fc_seq *sp);
-
-
-/*
- * Reset all EMs of a lport, releasing its all sequences and
- * exchanges. If sid is non-zero, then reset only exchanges
- * we sourced from that FID. If did is non-zero, reset only
- * exchanges destined to that FID.
- */
+void fc_exch_mgr_free(struct fc_lport *);
+void fc_exch_recv(struct fc_lport *, struct fc_frame *);
void fc_exch_mgr_reset(struct fc_lport *, u32 s_id, u32 d_id);
/*
* Functions for fc_functions_template
*/
-void fc_get_host_speed(struct Scsi_Host *shost);
-void fc_get_host_port_type(struct Scsi_Host *shost);
-void fc_get_host_port_state(struct Scsi_Host *shost);
-void fc_set_rport_loss_tmo(struct fc_rport *rport, u32 timeout);
+void fc_get_host_speed(struct Scsi_Host *);
+void fc_get_host_port_type(struct Scsi_Host *);
+void fc_get_host_port_state(struct Scsi_Host *);
+void fc_set_rport_loss_tmo(struct fc_rport *, u32 timeout);
struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *);
-/*
- * module setup functions.
- */
-int fc_setup_exch_mgr(void);
-void fc_destroy_exch_mgr(void);
-int fc_setup_rport(void);
-void fc_destroy_rport(void);
-
-/*
- * Internal libfc functions.
- */
-const char *fc_els_resp_type(struct fc_frame *);
-
#endif /* _LIBFC_H_ */
diff --git a/include/scsi/libfcoe.h b/include/scsi/libfcoe.h
index b2410605b74..c603f4a7e7f 100644
--- a/include/scsi/libfcoe.h
+++ b/include/scsi/libfcoe.h
@@ -53,33 +53,36 @@ enum fip_state {
};
/**
- * struct fcoe_ctlr - FCoE Controller and FIP state.
- * @state: internal FIP state for network link and FIP or non-FIP mode.
- * @lp: &fc_lport: libfc local port.
- * @sel_fcf: currently selected FCF, or NULL.
- * @fcfs: list of discovered FCFs.
- * @fcf_count: number of discovered FCF entries.
- * @sol_time: time when a multicast solicitation was last sent.
- * @sel_time: time after which to select an FCF.
- * @port_ka_time: time of next port keep-alive.
- * @ctlr_ka_time: time of next controller keep-alive.
- * @timer: timer struct used for all delayed events.
- * @link_work: &work_struct for doing FCF selection.
- * @recv_work: &work_struct for receiving FIP frames.
+ * struct fcoe_ctlr - FCoE Controller and FIP state
+ * @state: internal FIP state for network link and FIP or non-FIP mode.
+ * @mode: LLD-selected mode.
+ * @lp: &fc_lport: libfc local port.
+ * @sel_fcf: currently selected FCF, or NULL.
+ * @fcfs: list of discovered FCFs.
+ * @fcf_count: number of discovered FCF entries.
+ * @sol_time: time when a multicast solicitation was last sent.
+ * @sel_time: time after which to select an FCF.
+ * @port_ka_time: time of next port keep-alive.
+ * @ctlr_ka_time: time of next controller keep-alive.
+ * @timer: timer struct used for all delayed events.
+ * @link_work: &work_struct for doing FCF selection.
+ * @recv_work: &work_struct for receiving FIP frames.
* @fip_recv_list: list of received FIP frames.
- * @user_mfs: configured maximum FC frame size, including FC header.
- * @flogi_oxid: exchange ID of most recent fabric login.
- * @flogi_count: number of FLOGI attempts in AUTO mode.
- * @link: current link status for libfc.
- * @last_link: last link state reported to libfc.
- * @map_dest: use the FC_MAP mode for destination MAC addresses.
- * @spma: supports SPMA server-provided MACs mode
- * @dest_addr: MAC address of the selected FC forwarder.
- * @ctl_src_addr: the native MAC address of our local port.
- * @data_src_addr: the assigned MAC address for the local port after FLOGI.
- * @send: LLD-supplied function to handle sending of FIP Ethernet frames.
- * @update_mac: LLD-supplied function to handle changes to MAC addresses.
- * @lock: lock protecting this structure.
+ * @user_mfs: configured maximum FC frame size, including FC header.
+ * @flogi_oxid: exchange ID of most recent fabric login.
+ * @flogi_count: number of FLOGI attempts in AUTO mode.
+ * @link: current link status for libfc.
+ * @last_link: last link state reported to libfc.
+ * @map_dest: use the FC_MAP mode for destination MAC addresses.
+ * @spma: supports SPMA server-provided MACs mode
+ * @send_ctlr_ka: need to send controller keep alive
+ * @send_port_ka: need to send port keep alives
+ * @dest_addr: MAC address of the selected FC forwarder.
+ * @ctl_src_addr: the native MAC address of our local port.
+ * @send: LLD-supplied function to handle sending FIP Ethernet frames
+ * @update_mac: LLD-supplied function to handle changes to MAC addresses.
+ * @get_src_addr: LLD-supplied function to supply a source MAC address.
+ * @lock: lock protecting this structure.
*
* This structure is used by all FCoE drivers. It contains information
* needed by all FCoE low-level drivers (LLDs) as well as internal state
@@ -87,6 +90,7 @@ enum fip_state {
*/
struct fcoe_ctlr {
enum fip_state state;
+ enum fip_state mode;
struct fc_lport *lp;
struct fcoe_fcf *sel_fcf;
struct list_head fcfs;
@@ -104,29 +108,32 @@ struct fcoe_ctlr {
u8 flogi_count;
u8 link;
u8 last_link;
+ u8 reset_req;
u8 map_dest;
u8 spma;
+ u8 send_ctlr_ka;
+ u8 send_port_ka;
u8 dest_addr[ETH_ALEN];
u8 ctl_src_addr[ETH_ALEN];
- u8 data_src_addr[ETH_ALEN];
void (*send)(struct fcoe_ctlr *, struct sk_buff *);
- void (*update_mac)(struct fcoe_ctlr *, u8 *old, u8 *new);
+ void (*update_mac)(struct fc_lport *, u8 *addr);
+ u8 * (*get_src_addr)(struct fc_lport *);
spinlock_t lock;
};
-/*
- * struct fcoe_fcf - Fibre-Channel Forwarder.
- * @list: list linkage.
- * @time: system time (jiffies) when an advertisement was last received.
- * @switch_name: WWN of switch from advertisement.
- * @fabric_name: WWN of fabric from advertisement.
- * @fc_map: FC_MAP value from advertisement.
- * @fcf_mac: Ethernet address of the FCF.
- * @vfid: virtual fabric ID.
- * @pri: seletion priority, smaller values are better.
- * @flags: flags received from advertisement.
- * @fka_period: keep-alive period, in jiffies.
+/**
+ * struct fcoe_fcf - Fibre-Channel Forwarder
+ * @list: list linkage
+ * @time: system time (jiffies) when an advertisement was last received
+ * @switch_name: WWN of switch from advertisement
+ * @fabric_name: WWN of fabric from advertisement
+ * @fc_map: FC_MAP value from advertisement
+ * @fcf_mac: Ethernet address of the FCF
+ * @vfid: virtual fabric ID
+ * @pri: selection priority, smaller values are better
+ * @flags: flags received from advertisement
+ * @fka_period: keep-alive period, in jiffies
*
* A Fibre-Channel Forwarder (FCF) is the entity on the Ethernet that
* passes FCoE frames on to an FC fabric. This structure represents
@@ -148,6 +155,7 @@ struct fcoe_fcf {
u8 pri;
u16 flags;
u32 fka_period;
+ u8 fd_flags:1;
};
/* FIP API functions */
@@ -155,9 +163,10 @@ void fcoe_ctlr_init(struct fcoe_ctlr *);
void fcoe_ctlr_destroy(struct fcoe_ctlr *);
void fcoe_ctlr_link_up(struct fcoe_ctlr *);
int fcoe_ctlr_link_down(struct fcoe_ctlr *);
-int fcoe_ctlr_els_send(struct fcoe_ctlr *, struct sk_buff *);
+int fcoe_ctlr_els_send(struct fcoe_ctlr *, struct fc_lport *, struct sk_buff *);
void fcoe_ctlr_recv(struct fcoe_ctlr *, struct sk_buff *);
-int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *, struct fc_frame *fp, u8 *sa);
+int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *, struct fc_lport *,
+ struct fc_frame *);
/* libfcoe funcs */
u64 fcoe_wwn_from_mac(unsigned char mac[], unsigned int, unsigned int);
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index a72edd4ecee..7394e3bc8f4 100644
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -267,6 +267,7 @@ struct iscsi_session {
/* configuration */
int abort_timeout;
int lu_reset_timeout;
+ int tgt_reset_timeout;
int initial_r2t_en;
unsigned max_r2t;
int imm_data_en;
@@ -333,7 +334,8 @@ struct iscsi_host {
/*
* scsi host template
*/
-extern int iscsi_change_queue_depth(struct scsi_device *sdev, int depth);
+extern int iscsi_change_queue_depth(struct scsi_device *sdev, int depth,
+ int reason);
extern int iscsi_eh_abort(struct scsi_cmnd *sc);
extern int iscsi_eh_target_reset(struct scsi_cmnd *sc);
extern int iscsi_eh_device_reset(struct scsi_cmnd *sc);
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index e78d3b62d8e..9eaa3f05f95 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -634,7 +634,8 @@ extern int sas_target_alloc(struct scsi_target *);
extern int sas_slave_alloc(struct scsi_device *);
extern int sas_slave_configure(struct scsi_device *);
extern void sas_slave_destroy(struct scsi_device *);
-extern int sas_change_queue_depth(struct scsi_device *, int new_depth);
+extern int sas_change_queue_depth(struct scsi_device *, int new_depth,
+ int reason);
extern int sas_change_queue_type(struct scsi_device *, int qt);
extern int sas_bios_param(struct scsi_device *,
struct block_device *,
diff --git a/include/scsi/osd_initiator.h b/include/scsi/osd_initiator.h
index 02bd9f71635..39d6d109715 100644
--- a/include/scsi/osd_initiator.h
+++ b/include/scsi/osd_initiator.h
@@ -48,7 +48,6 @@ enum osd_std_version {
*/
struct osd_dev {
struct scsi_device *scsi_device;
- struct file *file;
unsigned def_timeout;
#ifdef OSD_VER1_SUPPORT
@@ -56,10 +55,24 @@ struct osd_dev {
#endif
};
-/* Retrieve/return osd_dev(s) for use by Kernel clients */
-struct osd_dev *osduld_path_lookup(const char *dev_name); /*Use IS_ERR/ERR_PTR*/
+/* Unique Identification of an OSD device */
+struct osd_dev_info {
+ unsigned systemid_len;
+ u8 systemid[OSD_SYSTEMID_LEN];
+ unsigned osdname_len;
+ u8 *osdname;
+};
+
+/* Retrieve/return osd_dev(s) for use by Kernel clients
+ * Use IS_ERR/ERR_PTR on returned "osd_dev *".
+ */
+struct osd_dev *osduld_path_lookup(const char *dev_name);
+struct osd_dev *osduld_info_lookup(const struct osd_dev_info *odi);
void osduld_put_device(struct osd_dev *od);
+const struct osd_dev_info *osduld_device_info(struct osd_dev *od);
+bool osduld_device_same(struct osd_dev *od, const struct osd_dev_info *odi);
+
/* Add/remove test ioctls from external modules */
typedef int (do_test_fn)(struct osd_dev *od, unsigned cmd, unsigned long arg);
int osduld_register_test(unsigned ioctl, do_test_fn *do_test);
@@ -69,8 +82,24 @@ void osduld_unregister_test(unsigned ioctl);
void osd_dev_init(struct osd_dev *od, struct scsi_device *scsi_device);
void osd_dev_fini(struct osd_dev *od);
-/* some hi level device operations */
-int osd_auto_detect_ver(struct osd_dev *od, void *caps); /* GFP_KERNEL */
+/**
+ * osd_auto_detect_ver - Detect the OSD version, return Unique Identification
+ *
+ * @od: OSD target lun handle
+ * @caps: Capabilities authorizing OSD root read attributes access
+ * @odi: Retrieved information uniquely identifying the osd target lun
+ * Note: odi->osdname must be kfreed by caller.
+ *
+ * Auto detects the OSD version of the OSD target and sets the @od
+ * accordingly. Meanwhile also returns the "system id" and "osd name" root
+ * attributes which uniquely identify the OSD target. This member is usually
+ * called by the ULD. ULD users should call osduld_device_info().
+ * This rutine allocates osd requests and memory at GFP_KERNEL level and might
+ * sleep.
+ */
+int osd_auto_detect_ver(struct osd_dev *od,
+ void *caps, struct osd_dev_info *odi);
+
static inline struct request_queue *osd_request_queue(struct osd_dev *od)
{
return od->scsi_device->request_queue;
@@ -84,6 +113,15 @@ static inline void osd_dev_set_ver(struct osd_dev *od, enum osd_std_version v)
#endif
}
+static inline bool osd_dev_is_ver1(struct osd_dev *od)
+{
+#ifdef OSD_VER1_SUPPORT
+ return od->version == OSD_VER1;
+#else
+ return false;
+#endif
+}
+
struct osd_request;
typedef void (osd_req_done_fn)(struct osd_request *or, void *private);
@@ -120,14 +158,9 @@ struct osd_request {
int async_error;
};
-/* OSD Version control */
static inline bool osd_req_is_ver1(struct osd_request *or)
{
-#ifdef OSD_VER1_SUPPORT
- return or->osd_dev->version == OSD_VER1;
-#else
- return false;
-#endif
+ return osd_dev_is_ver1(or->osd_dev);
}
/*
@@ -234,7 +267,7 @@ int osd_execute_request_async(struct osd_request *or,
* @bad_attr_list - List of failing attributes (optional)
* @max_attr - Size of @bad_attr_list.
*
- * After execution, sense + return code can be analyzed using this function. The
+ * After execution, osd_request results are analyzed using this function. The
* return code is the final disposition on the error. So it is possible that a
* CHECK_CONDITION was returned from target but this will return NO_ERROR, for
* example on recovered errors. All parameters are optional if caller does
@@ -243,7 +276,31 @@ int osd_execute_request_async(struct osd_request *or,
* of the SCSI_OSD_DPRINT_SENSE Kconfig value. Set @silent if you know the
* command would routinely fail, to not spam the dmsg file.
*/
+
+/**
+ * osd_err_priority - osd categorized return codes in ascending severity.
+ *
+ * The categories are borrowed from the pnfs_osd_errno enum.
+ * See comments for translated Linux codes returned by osd_req_decode_sense.
+ */
+enum osd_err_priority {
+ OSD_ERR_PRI_NO_ERROR = 0,
+ /* Recoverable, caller should clear_highpage() all pages */
+ OSD_ERR_PRI_CLEAR_PAGES = 1, /* -EFAULT */
+ OSD_ERR_PRI_RESOURCE = 2, /* -ENOMEM */
+ OSD_ERR_PRI_BAD_CRED = 3, /* -EINVAL */
+ OSD_ERR_PRI_NO_ACCESS = 4, /* -EACCES */
+ OSD_ERR_PRI_UNREACHABLE = 5, /* any other */
+ OSD_ERR_PRI_NOT_FOUND = 6, /* -ENOENT */
+ OSD_ERR_PRI_NO_SPACE = 7, /* -ENOSPC */
+ OSD_ERR_PRI_EIO = 8, /* -EIO */
+};
+
struct osd_sense_info {
+ u64 out_resid; /* Zero on success otherwise out residual */
+ u64 in_resid; /* Zero on success otherwise in residual */
+ enum osd_err_priority osd_err_pri;
+
int key; /* one of enum scsi_sense_keys */
int additional_code ; /* enum osd_additional_sense_codes */
union { /* Sense specific information */
diff --git a/include/scsi/osd_protocol.h b/include/scsi/osd_protocol.h
index 2cc8e8b1cc1..68566128354 100644
--- a/include/scsi/osd_protocol.h
+++ b/include/scsi/osd_protocol.h
@@ -17,6 +17,7 @@
#define __OSD_PROTOCOL_H__
#include <linux/types.h>
+#include <linux/kernel.h>
#include <asm/unaligned.h>
#include <scsi/scsi.h>
diff --git a/include/scsi/osd_sense.h b/include/scsi/osd_sense.h
index ff9b33c773c..91db543a550 100644
--- a/include/scsi/osd_sense.h
+++ b/include/scsi/osd_sense.h
@@ -255,6 +255,9 @@ enum osdv2_cdb_field_offset {
OSD_CFO_STARTING_BYTE = OSD_CDB_OFFSET(v2.start_address),
OSD_CFO_PARTITION_ID = OSD_CDB_OFFSET(partition),
OSD_CFO_OBJECT_ID = OSD_CDB_OFFSET(object),
+ OSD_CFO_PERMISSIONS = sizeof(struct osd_cdb_head) +
+ offsetof(struct osd_capability_head,
+ permissions_bit_mask),
};
#endif /* ndef __OSD_SENSE_H__ */
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
index 34c46ab5c31..8b4deca996a 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -94,6 +94,7 @@ struct scsi_cmnd;
#define WRITE_LONG 0x3f
#define CHANGE_DEFINITION 0x40
#define WRITE_SAME 0x41
+#define UNMAP 0x42
#define READ_TOC 0x43
#define LOG_SELECT 0x4c
#define LOG_SENSE 0x4d
@@ -122,9 +123,11 @@ struct scsi_cmnd;
#define READ_16 0x88
#define WRITE_16 0x8a
#define VERIFY_16 0x8f
+#define WRITE_SAME_16 0x93
#define SERVICE_ACTION_IN 0x9e
/* values for service action in */
#define SAI_READ_CAPACITY_16 0x10
+#define SAI_GET_LBA_STATUS 0x12
/* values for maintenance in */
#define MI_REPORT_TARGET_PGS 0x0a
/* values for maintenance out */
@@ -132,6 +135,7 @@ struct scsi_cmnd;
/* values for variable length command */
#define READ_32 0x09
#define WRITE_32 0x0b
+#define WRITE_SAME_32 0x0d
/* Values for T10/04-262r7 */
#define ATA_16 0x85 /* 16-byte pass-thru */
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index f097ae340bc..7c4449900c2 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -81,11 +81,14 @@ struct scsi_device {
struct list_head starved_entry;
struct scsi_cmnd *current_cmnd; /* currently active command */
unsigned short queue_depth; /* How deep of a queue we want */
+ unsigned short max_queue_depth; /* max queue depth */
unsigned short last_queue_full_depth; /* These two are used by */
unsigned short last_queue_full_count; /* scsi_track_queue_full() */
- unsigned long last_queue_full_time;/* don't let QUEUE_FULLs on the same
- jiffie count on our counter, they
- could all be from the same event. */
+ unsigned long last_queue_full_time; /* last queue full time */
+ unsigned long queue_ramp_up_period; /* ramp up period in jiffies */
+#define SCSI_DEFAULT_RAMP_UP_PERIOD (120 * HZ)
+
+ unsigned long last_queue_ramp_up; /* last queue ramp up time */
unsigned int id, lun, channel;
@@ -175,6 +178,7 @@ struct scsi_dh_devlist {
char *model;
};
+typedef void (*activate_complete)(void *, int);
struct scsi_device_handler {
/* Used by the infrastructure */
struct list_head list; /* list of scsi_device_handlers */
@@ -186,7 +190,7 @@ struct scsi_device_handler {
int (*check_sense)(struct scsi_device *, struct scsi_sense_hdr *);
int (*attach)(struct scsi_device *);
void (*detach)(struct scsi_device *);
- int (*activate)(struct scsi_device *);
+ int (*activate)(struct scsi_device *, activate_complete, void *);
int (*prep_fn)(struct scsi_device *, struct request *);
int (*set_params)(struct scsi_device *, const char *);
};
diff --git a/include/scsi/scsi_dh.h b/include/scsi/scsi_dh.h
index ff2407405b4..e3f2db212dd 100644
--- a/include/scsi/scsi_dh.h
+++ b/include/scsi/scsi_dh.h
@@ -56,14 +56,16 @@ enum {
SCSI_DH_DRIVER_MAX,
};
#if defined(CONFIG_SCSI_DH) || defined(CONFIG_SCSI_DH_MODULE)
-extern int scsi_dh_activate(struct request_queue *);
+extern int scsi_dh_activate(struct request_queue *, activate_complete, void *);
extern int scsi_dh_handler_exist(const char *);
extern int scsi_dh_attach(struct request_queue *, const char *);
extern void scsi_dh_detach(struct request_queue *);
extern int scsi_dh_set_params(struct request_queue *, const char *);
#else
-static inline int scsi_dh_activate(struct request_queue *req)
+static inline int scsi_dh_activate(struct request_queue *req,
+ activate_complete fn, void *data)
{
+ fn(data, 0);
return 0;
}
static inline int scsi_dh_handler_exist(const char *name)
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 47941fc5aba..c50a97fc76f 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -43,6 +43,12 @@ struct blk_queue_tags;
#define DISABLE_CLUSTERING 0
#define ENABLE_CLUSTERING 1
+enum {
+ SCSI_QDEPTH_DEFAULT, /* default requested change, e.g. from sysfs */
+ SCSI_QDEPTH_QFULL, /* scsi-ml requested due to queue full */
+ SCSI_QDEPTH_RAMP_UP, /* scsi-ml requested due to threshhold event */
+};
+
struct scsi_host_template {
struct module *module;
const char *name;
@@ -294,7 +300,7 @@ struct scsi_host_template {
*
* Status: OPTIONAL
*/
- int (* change_queue_depth)(struct scsi_device *, int);
+ int (* change_queue_depth)(struct scsi_device *, int, int);
/*
* Fill in this function to allow the changing of tag types
@@ -677,6 +683,12 @@ struct Scsi_Host {
void *shost_data;
/*
+ * Points to the physical bus device we'd use to do DMA
+ * Needed just in case we have virtual hosts.
+ */
+ struct device *dma_dev;
+
+ /*
* We should ensure that this is aligned, both for better performance
* and also because some compilers (m68k) don't automatically force
* alignment to a long boundary.
@@ -720,7 +732,9 @@ extern int scsi_queue_work(struct Scsi_Host *, struct work_struct *);
extern void scsi_flush_work(struct Scsi_Host *);
extern struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *, int);
-extern int __must_check scsi_add_host(struct Scsi_Host *, struct device *);
+extern int __must_check scsi_add_host_with_dma(struct Scsi_Host *,
+ struct device *,
+ struct device *);
extern void scsi_scan_host(struct Scsi_Host *);
extern void scsi_rescan_device(struct device *);
extern void scsi_remove_host(struct Scsi_Host *);
@@ -731,6 +745,12 @@ extern const char *scsi_host_state_name(enum scsi_host_state);
extern u64 scsi_calculate_bounce_limit(struct Scsi_Host *);
+static inline int __must_check scsi_add_host(struct Scsi_Host *host,
+ struct device *dev)
+{
+ return scsi_add_host_with_dma(host, dev, dev);
+}
+
static inline struct device *scsi_get_device(struct Scsi_Host *shost)
{
return shost->shost_gendev.parent;
diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
index fc50bd64aa4..8e86a94faf0 100644
--- a/include/scsi/scsi_transport_fc.h
+++ b/include/scsi/scsi_transport_fc.h
@@ -807,5 +807,6 @@ void fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number,
struct fc_vport *fc_vport_create(struct Scsi_Host *shost, int channel,
struct fc_vport_identifiers *);
int fc_vport_terminate(struct fc_vport *vport);
+void fc_block_scsi_eh(struct scsi_cmnd *cmnd);
#endif /* SCSI_TRANSPORT_FC_H */