[SCSI] lpfc 8.3.4: Add bsg (SGIOv4) support for ELS/CT support

Add bsg (SGIOv4) support for sending and receiving ELS, CT commands

This patch adds a new file, lpfc_bsg.c.

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

drivers/scsi/lpfc/Makefile

@@ -28,4 +28,4 @@ obj-$(CONFIG_SCSI_LPFC) := lpfc.o
 
 lpfc-objs := lpfc_mem.o lpfc_sli.o lpfc_ct.o lpfc_els.o lpfc_hbadisc.o	\
 	lpfc_init.o lpfc_mbox.o lpfc_nportdisc.o lpfc_scsi.o lpfc_attr.o \
-	lpfc_vport.o lpfc_debugfs.o
+	lpfc_vport.o lpfc_debugfs.o lpfc_bsg.o

drivers/scsi/lpfc/lpfc.h

@@ -441,6 +441,12 @@ enum intr_type_t {
 	MSIX,
 };
 
+struct unsol_rcv_ct_ctx {
+	uint32_t ctxt_id;
+	uint32_t SID;
+	uint32_t oxid;
+};
+
 struct lpfc_hba {
 	/* SCSI interface function jump table entries */
 	int (*lpfc_new_scsi_buf)
@@ -776,6 +782,11 @@ struct lpfc_hba {
 	uint8_t valid_vlan;
 	uint16_t vlan_id;
 	struct list_head fcf_conn_rec_list;
+
+	struct mutex ct_event_mutex; /* synchronize access to ct_ev_waiters */
+	struct list_head ct_ev_waiters;
+	struct unsol_rcv_ct_ctx ct_ctx[64];
+	uint32_t ctx_idx;
 };
 
 static inline struct Scsi_Host *

drivers/scsi/lpfc/lpfc_attr.c

@@ -4132,6 +4132,9 @@ struct fc_function_template lpfc_transport_functions = {
 	.vport_disable = lpfc_vport_disable,
 
 	.set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
+
+	.bsg_request = lpfc_bsg_request,
+	.bsg_timeout = lpfc_bsg_timeout,
 };
 
 struct fc_function_template lpfc_vport_transport_functions = {