[SCSI] libiscsi: Do not fail commands immediately during logout

If the target requests a logout, then we do not want
to fail commands to scsi-ml right away. This patch just
fails in pending commands for a requeue immediately, and then lets
iscsid handle running commands like normal recovery.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 6 insertions, 8 deletions

diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 96883614ba08..b17081bed128 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -917,7 +917,7 @@ check_mgmt:
                 conn->ctask = list_entry(conn->xmitqueue.next,
                                          struct iscsi_cmd_task, running);
                 if (conn->session->state == ISCSI_STATE_LOGGING_OUT) {
-                        fail_command(conn, conn->ctask, DID_NO_CONNECT << 16);
+                        fail_command(conn, conn->ctask, DID_IMM_RETRY << 16);
                         continue;
                 }
                 if (iscsi_prep_scsi_cmd_pdu(conn->ctask)) {
@@ -1024,21 +1024,19 @@ int iscsi_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
                  * be entering our queuecommand while a block is starting
                  * up because the block code is not locked)
                  */
-                if (session->state == ISCSI_STATE_IN_RECOVERY) {
+                switch (session->state) {
+                case ISCSI_STATE_IN_RECOVERY:
                         reason = FAILURE_SESSION_IN_RECOVERY;
                         goto reject;
-                }
-
-                switch (session->state) {
+                case ISCSI_STATE_LOGGING_OUT:
+                        reason = FAILURE_SESSION_LOGGING_OUT;
+                        goto reject;
                 case ISCSI_STATE_RECOVERY_FAILED:
                         reason = FAILURE_SESSION_RECOVERY_TIMEOUT;
                         break;
                 case ISCSI_STATE_TERMINATE:
                         reason = FAILURE_SESSION_TERMINATE;
                         break;
-                case ISCSI_STATE_LOGGING_OUT:
-                        reason = FAILURE_SESSION_LOGGING_OUT;
-                        break;
                 default:
                         reason = FAILURE_SESSION_FREED;
                 }