be2iscsi: Fix updating the boot enteries in sysfs

During port async event driver should check if there is any boot target
configured on the adapter. Update sysfs enteries with the boot target
parameters.

Signed-off-by: Minh Tran <[e-mail]>
Signed-off-by: John Soni Jose <[e-mail]>
Signed-off-by: Jayamohan Kallickal <[e-mail]>
Reviewed-by: Mike Christie <[e-mail]>
Signed-off-by: Christoph Hellwig <[e-mail]>

drivers/scsi/be2iscsi/be_cmds.c

···
 		  ASYNC_EVENT_CODE_LINK_STATE);
 }
 
+static bool is_iscsi_evt(u32 trailer)
+{
+	return ((trailer >> ASYNC_TRAILER_EVENT_CODE_SHIFT) &
+		  ASYNC_TRAILER_EVENT_CODE_MASK) ==
+		  ASYNC_EVENT_CODE_ISCSI;
+}
+
+static int iscsi_evt_type(u32 trailer)
+{
+	return (trailer >> ASYNC_TRAILER_EVENT_TYPE_SHIFT) &
+		 ASYNC_TRAILER_EVENT_TYPE_MASK;
+}
+
 static inline bool be_mcc_compl_is_new(struct be_mcc_compl *compl)
 {
 	if (compl->flags != 0) {
···
 	} else if ((evt->port_link_status & ASYNC_EVENT_LINK_UP) ||
 		    ((evt->port_link_status & ASYNC_EVENT_LOGICAL) &&
 		     (evt->port_fault == BEISCSI_PHY_LINK_FAULT_NONE))) {
-		phba->state = BE_ADAPTER_LINK_UP;
+		phba->state = BE_ADAPTER_LINK_UP | BE_ADAPTER_CHECK_BOOT;
 
 		beiscsi_log(phba, KERN_ERR,
 			    BEISCSI_LOG_CONFIG | BEISCSI_LOG_INIT,
···
 				/* Interpret compl as a async link evt */
 				beiscsi_async_link_state_process(phba,
 				   (struct be_async_event_link_state *) compl);
-			else
+			else if (is_iscsi_evt(compl->flags)) {
+				switch (iscsi_evt_type(compl->flags)) {
+				case ASYNC_EVENT_NEW_ISCSI_TGT_DISC:
+				case ASYNC_EVENT_NEW_ISCSI_CONN:
+				case ASYNC_EVENT_NEW_TCP_CONN:
+					phba->state |= BE_ADAPTER_CHECK_BOOT;
+					beiscsi_log(phba, KERN_ERR,
+						    BEISCSI_LOG_CONFIG |
+						    BEISCSI_LOG_MBOX,
+						    "BC_%d : Async iscsi Event,"
+						    " flags handled = 0x%08x\n",
+						    compl->flags);
+					break;
+				default:
+					beiscsi_log(phba, KERN_ERR,
+						    BEISCSI_LOG_CONFIG |
+						    BEISCSI_LOG_MBOX,
+						    "BC_%d : Unsupported Async"
+						    " Event, flags = 0x%08x\n",
+						    compl->flags);
+				}
+			} else
 				beiscsi_log(phba, KERN_ERR,
 					    BEISCSI_LOG_CONFIG |
 					    BEISCSI_LOG_MBOX,

drivers/scsi/be2iscsi/be_cmds.h

···
 #define ASYNC_TRAILER_EVENT_CODE_SHIFT	8	/* bits 8 - 15 */
 #define ASYNC_TRAILER_EVENT_CODE_MASK	0xFF
 #define ASYNC_EVENT_CODE_LINK_STATE	0x1
+#define ASYNC_EVENT_CODE_ISCSI		0x4
+
+#define ASYNC_TRAILER_EVENT_TYPE_SHIFT	16	/* bits 16 - 23 */
+#define ASYNC_TRAILER_EVENT_TYPE_MASK	0xF
+#define ASYNC_EVENT_NEW_ISCSI_TGT_DISC	0x4
+#define ASYNC_EVENT_NEW_ISCSI_CONN	0x5
+#define ASYNC_EVENT_NEW_TCP_CONN	0x7
+
 struct be_async_event_trailer {
 	u32 code;
 };

drivers/scsi/be2iscsi/be_main.c

···
 {
 	struct iscsi_boot_kobj *boot_kobj;
 
+	/* it has been created previously */
+	if (phba->boot_kset)
+		return 0;
+
 	/* get boot info using mgmt cmd */
 	if (beiscsi_get_boot_info(phba))
 		/* Try to see if we can carry on without this */
···
 	}
 }
 
+static void be_check_boot_session(struct beiscsi_hba *phba)
+{
+	if (beiscsi_setup_boot_info(phba))
+		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
+			    "BM_%d : Could not set up "
+			    "iSCSI boot info on async event.\n");
+}
+
 /*
  * beiscsi_hw_health_check()- Check adapter health
  * @work: work item to check HW health
···
 			     beiscsi_hw_check_task.work);
 
 	be_eqd_update(phba);
+
+	if (phba->state & BE_ADAPTER_CHECK_BOOT) {
+		phba->state &= ~BE_ADAPTER_CHECK_BOOT;
+		be_check_boot_session(phba);
+	}
 
 	beiscsi_ue_detect(phba);
 

drivers/scsi/be2iscsi/be_main.h

···
 #define BE_ADAPTER_LINK_DOWN	0x002
 #define BE_ADAPTER_PCI_ERR	0x004
 #define BE_ADAPTER_STATE_SHUTDOWN	0x008
+#define BE_ADAPTER_CHECK_BOOT	0x010
 
 
 #define BEISCSI_CLEAN_UNLOAD	0x01