scsi/hifc:Fix the bug that the system may be oops during unintall hifc module.

driver inclusion
category: bug
bugzilla: NA

------------------------------------------------------------------

Resolved the issue that the system may be oops due to the resource was released after shutdown
and scsi layer continue send fcp cmd to hifc driver.
Signed-off-by: NChenguangli <chenguangli2@huawei.com>
Reviewed-by: NZengweiliang <zengweiliang.zengweiliang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/scsi/huawei/hifc/unf_common.h

@@ -13,7 +13,7 @@
 /* B version, B0XX Corresponding x.x */
 #define UNF_B_VERSION "5.0"
 /* Indicates the minor version number of the driver */
-#define UNF_DRIVER_VERSION "10"
+#define UNF_DRIVER_VERSION "11"
 /* version num */
 #define UNF_FC_VERSION UNF_MAJOR_VERSION "." UNF_B_VERSION "." UNF_DRIVER_VERSION
 extern unsigned int unf_dbg_level;

drivers/scsi/huawei/hifc/unf_scsi.c

@@ -845,6 +845,29 @@ static int unf_scsi_queue_cmd(struct Scsi_Host *shost,
 		return 0;
 	}
 
+	if (unlikely(!scsi_image_table->wwn_rport_info_table)) {
+		UNF_TRACE(UNF_EVTLOG_DRIVER_INFO, UNF_LOG_ABNORMAL, UNF_WARN,
+			  "[warn]Port(0x%x) WwnRportInfoTable NULL", lport->port_id);
+
+		cmd->result = DID_NO_CONNECT << 16;
+		cmd->scsi_done(cmd);
+		ret_value = DID_NO_CONNECT;
+		UNF_IO_RESULT_CNT(scsi_image_table, scsi_id, ret_value);
+		return 0;
+	}
+
+	if (unlikely(lport->b_port_removing == UNF_TRUE)) {
+		UNF_TRACE(UNF_EVTLOG_DRIVER_INFO, UNF_LOG_ABNORMAL, UNF_WARN,
+			  "[warn]Port(0x%x) scsi_id(0x%x) rport(0x%p) target_id(0x%x) cmd(0x%p) is removing",
+			  lport->port_id, scsi_id, p_rport, p_rport->scsi_target_id, cmd);
+
+		cmd->result = DID_NO_CONNECT << 16;
+		cmd->scsi_done(cmd);
+		ret_value = DID_NO_CONNECT;
+		UNF_IO_RESULT_CNT(scsi_image_table, scsi_id, ret_value);
+		return 0;
+	}
+
 	en_scsi_state = atomic_read(&scsi_image_table->wwn_rport_info_table[scsi_id].en_scsi_state);
 	if (unlikely(en_scsi_state != UNF_SCSI_ST_ONLINE)) {
 		if (en_scsi_state == UNF_SCSI_ST_OFFLINE) {