[PATCH 09/16] qla2xxx: Fix stuck session in PLOGI state

[Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>]

From: Quinn Tran <quinn.tran@xxxxxxxxxx>

On PLOGI complete + RSCN received, driver tries
to handle RSCN but failed to reset the session back
to the beginning to restart the login process. Instead
the session was left in the Plogi complete without
moving forward.  This patch will push the session state
back to the delete state and restart the connection.

Signed-off-by: Quinn Tran <quinn.tran@xxxxxxxxxx>
Signed-off-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
---
 drivers/scsi/qla2xxx/qla_init.c   | 13 +++++++++----
 drivers/scsi/qla2xxx/qla_target.c |  4 ----
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 0575210aa8f1..bd1afa3063ee 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -414,6 +414,7 @@ void qla24xx_handle_adisc_event(scsi_qla_host_t *vha, struct event_arg *ea)
 		return;
 	} else if (ea->sp->gen1 != ea->fcport->rscn_gen) {
 		qla_rscn_replay(fcport);
+		qlt_schedule_sess_for_deletion(fcport);
 		return;
 	}
 
@@ -538,6 +539,7 @@ static void qla24xx_handle_gnl_done_event(scsi_qla_host_t *vha,
 
 	if (fcport->last_rscn_gen != fcport->rscn_gen) {
 		qla_rscn_replay(fcport);
+		qlt_schedule_sess_for_deletion(fcport);
 		return;
 	} else if (fcport->last_login_gen != fcport->login_gen) {
 		ql_dbg(ql_dbg_disc, vha, 0x20e0,
@@ -1229,6 +1231,7 @@ void qla24xx_handle_gpdb_event(scsi_qla_host_t *vha, struct event_arg *ea)
 		return;
 	} else if (ea->sp->gen1 != fcport->rscn_gen) {
 		qla_rscn_replay(fcport);
+		qlt_schedule_sess_for_deletion(fcport);
 		return;
 	}
 
@@ -1699,9 +1702,7 @@ void qla_rscn_replay(fc_port_t *fcport)
 #else
                qla24xx_post_gpnid_work(fcport->vha, &ea.id);
 #endif
-       } else {
-               qla24xx_post_gnl_work(fcport->vha, fcport);
-       }
+	}
 }
 
 static void
@@ -1938,7 +1939,7 @@ qla24xx_handle_plogi_done_event(struct scsi_qla_host *vha, struct event_arg *ea)
 	    "%s %8phC DS %d LS %d rc %d login %d|%d rscn %d|%d data %x|%x iop %x|%x\n",
 	    __func__, fcport->port_name, fcport->disc_state,
 	    fcport->fw_login_state, ea->rc, ea->sp->gen2, fcport->login_gen,
-	    ea->sp->gen2, fcport->rscn_gen|ea->sp->gen1,
+	    ea->sp->gen1, fcport->rscn_gen,
 	    ea->data[0], ea->data[1], ea->iop[0], ea->iop[1]);
 
 	if ((fcport->fw_login_state == DSC_LS_PLOGI_PEND) ||
@@ -1960,7 +1961,11 @@ qla24xx_handle_plogi_done_event(struct scsi_qla_host *vha, struct event_arg *ea)
 		set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
 		return;
 	} else if (ea->sp->gen1 != fcport->rscn_gen) {
+		ql_dbg(ql_dbg_disc, vha, 0x20d3,
+		    "%s %8phC RSCN generation changed\n",
+		    __func__, fcport->port_name);
 		qla_rscn_replay(fcport);
+		qlt_schedule_sess_for_deletion(fcport);
 		return;
 	}
 
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index c0b9e0d079c0..666146a86d10 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -1260,9 +1260,6 @@ void qlt_schedule_sess_for_deletion(struct fc_port *sess)
 		break;
 	}
 
-	if (sess->deleted == QLA_SESS_DELETED)
-		sess->logout_on_delete = 0;
-
 	spin_lock_irqsave(&sess->vha->work_lock, flags);
 	if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) {
 		spin_unlock_irqrestore(&sess->vha->work_lock, flags);
@@ -4080,7 +4077,6 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha,
 				 * Session is already logged out, but we need
 				 * to notify initiator, who's not aware of this
 				 */
-				cmd->sess->logout_on_delete = 0;
 				cmd->sess->send_els_logo = 1;
 				ql_dbg(ql_dbg_disc, vha, 0x20f8,
 				    "%s %d %8phC post del sess\n",
-- 
2.12.0