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authorQuinn Tran <quinn.tran@cavium.com>2017-12-04 14:45:05 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-03-15 10:56:59 +0100
commit41929d9b23638a2591dd4ebd4f1c11e1fd331cc1 (patch)
treeae8e88048da8439d5264f2043f1be96bb9088001
parent3ab51d1da782b33cb86eba794c53c8379e4e12a5 (diff)
scsi: qla2xxx: Relogin to target port on a cable swap
commit 5ef696aa9f3ccf999552d924c4e21a348f2bbea9 upstream. If user swaps one target port for another target port for same switch port, the new target port is not being recognized by the driver. Current code assumes that old Target port has recovered from link down. The fix will ask switch what is the WWPN of a specific NportID (GPNID) rather than assuming it's the same Target port which has came back. Fixes: 726b85487067d ("qla2xxx: Add framework for async fabric discovery") Cc: <stable@vger.kernel.org> # 4.10+ Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/scsi/qla2xxx/qla_gs.c166
-rw-r--r--drivers/scsi/qla2xxx/qla_init.c6
-rw-r--r--drivers/scsi/qla2xxx/qla_os.c35
-rw-r--r--drivers/scsi/qla2xxx/qla_target.c35
4 files changed, 195 insertions, 47 deletions
diff --git a/drivers/scsi/qla2xxx/qla_gs.c b/drivers/scsi/qla2xxx/qla_gs.c
index 59ecc4eda6cd..7d715e58901f 100644
--- a/drivers/scsi/qla2xxx/qla_gs.c
+++ b/drivers/scsi/qla2xxx/qla_gs.c
@@ -3171,43 +3171,136 @@ void qla24xx_async_gpnid_done(scsi_qla_host_t *vha, srb_t *sp)
void qla24xx_handle_gpnid_event(scsi_qla_host_t *vha, struct event_arg *ea)
{
- fc_port_t *fcport;
- unsigned long flags;
+ fc_port_t *fcport, *conflict, *t;
- spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
- fcport = qla2x00_find_fcport_by_wwpn(vha, ea->port_name, 1);
- spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d port_id: %06x\n",
+ __func__, __LINE__, ea->id.b24);
- if (fcport) {
- /* cable moved. just plugged in */
- fcport->rscn_gen++;
- fcport->d_id = ea->id;
- fcport->scan_state = QLA_FCPORT_FOUND;
- fcport->flags |= FCF_FABRIC_DEVICE;
-
- switch (fcport->disc_state) {
- case DSC_DELETED:
- ql_dbg(ql_dbg_disc, vha, 0x210d,
- "%s %d %8phC login\n", __func__, __LINE__,
- fcport->port_name);
- qla24xx_fcport_handle_login(vha, fcport);
- break;
- case DSC_DELETE_PEND:
- break;
- default:
- ql_dbg(ql_dbg_disc, vha, 0x2064,
- "%s %d %8phC post del sess\n",
- __func__, __LINE__, fcport->port_name);
- qlt_schedule_sess_for_deletion_lock(fcport);
- break;
+ if (ea->rc) {
+ /* cable is disconnected */
+ list_for_each_entry_safe(fcport, t, &vha->vp_fcports, list) {
+ if (fcport->d_id.b24 == ea->id.b24) {
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d %8phC DS %d\n",
+ __func__, __LINE__,
+ fcport->port_name,
+ fcport->disc_state);
+ fcport->scan_state = QLA_FCPORT_SCAN;
+ switch (fcport->disc_state) {
+ case DSC_DELETED:
+ case DSC_DELETE_PEND:
+ break;
+ default:
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d %8phC post del sess\n",
+ __func__, __LINE__,
+ fcport->port_name);
+ qlt_schedule_sess_for_deletion_lock
+ (fcport);
+ break;
+ }
+ }
}
} else {
- /* create new fcport */
- ql_dbg(ql_dbg_disc, vha, 0x2065,
- "%s %d %8phC post new sess\n",
- __func__, __LINE__, ea->port_name);
+ /* cable is connected */
+ fcport = qla2x00_find_fcport_by_wwpn(vha, ea->port_name, 1);
+ if (fcport) {
+ list_for_each_entry_safe(conflict, t, &vha->vp_fcports,
+ list) {
+ if ((conflict->d_id.b24 == ea->id.b24) &&
+ (fcport != conflict)) {
+ /* 2 fcports with conflict Nport ID or
+ * an existing fcport is having nport ID
+ * conflict with new fcport.
+ */
+
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d %8phC DS %d\n",
+ __func__, __LINE__,
+ conflict->port_name,
+ conflict->disc_state);
+ conflict->scan_state = QLA_FCPORT_SCAN;
+ switch (conflict->disc_state) {
+ case DSC_DELETED:
+ case DSC_DELETE_PEND:
+ break;
+ default:
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d %8phC post del sess\n",
+ __func__, __LINE__,
+ conflict->port_name);
+ qlt_schedule_sess_for_deletion_lock
+ (conflict);
+ break;
+ }
+ }
+ }
- qla24xx_post_newsess_work(vha, &ea->id, ea->port_name, NULL);
+ fcport->rscn_gen++;
+ fcport->scan_state = QLA_FCPORT_FOUND;
+ fcport->flags |= FCF_FABRIC_DEVICE;
+ switch (fcport->disc_state) {
+ case DSC_LOGIN_COMPLETE:
+ /* recheck session is still intact. */
+ ql_dbg(ql_dbg_disc, vha, 0x210d,
+ "%s %d %8phC revalidate session with ADISC\n",
+ __func__, __LINE__, fcport->port_name);
+ qla24xx_post_gpdb_work(vha, fcport,
+ PDO_FORCE_ADISC);
+ break;
+ case DSC_DELETED:
+ ql_dbg(ql_dbg_disc, vha, 0x210d,
+ "%s %d %8phC login\n", __func__, __LINE__,
+ fcport->port_name);
+ fcport->d_id = ea->id;
+ qla24xx_fcport_handle_login(vha, fcport);
+ break;
+ case DSC_DELETE_PEND:
+ fcport->d_id = ea->id;
+ break;
+ default:
+ fcport->d_id = ea->id;
+ break;
+ }
+ } else {
+ list_for_each_entry_safe(conflict, t, &vha->vp_fcports,
+ list) {
+ if (conflict->d_id.b24 == ea->id.b24) {
+ /* 2 fcports with conflict Nport ID or
+ * an existing fcport is having nport ID
+ * conflict with new fcport.
+ */
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d %8phC DS %d\n",
+ __func__, __LINE__,
+ conflict->port_name,
+ conflict->disc_state);
+
+ conflict->scan_state = QLA_FCPORT_SCAN;
+ switch (conflict->disc_state) {
+ case DSC_DELETED:
+ case DSC_DELETE_PEND:
+ break;
+ default:
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %d %8phC post del sess\n",
+ __func__, __LINE__,
+ conflict->port_name);
+ qlt_schedule_sess_for_deletion_lock
+ (conflict);
+ break;
+ }
+ }
+ }
+
+ /* create new fcport */
+ ql_dbg(ql_dbg_disc, vha, 0x2065,
+ "%s %d %8phC post new sess\n",
+ __func__, __LINE__, ea->port_name);
+ qla24xx_post_newsess_work(vha, &ea->id,
+ ea->port_name, NULL);
+ }
}
}
@@ -3248,12 +3341,13 @@ static void qla2x00_async_gpnid_sp_done(void *s, int res)
spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
if (res) {
- if (res == QLA_FUNCTION_TIMEOUT)
+ if (res == QLA_FUNCTION_TIMEOUT) {
qla24xx_post_gpnid_work(sp->vha, &ea.id);
- sp->free(sp);
- return;
+ sp->free(sp);
+ return;
+ }
} else if (sp->gen1) {
- /* There was anoter RSNC for this Nport ID */
+ /* There was another RSCN for this Nport ID */
qla24xx_post_gpnid_work(sp->vha, &ea.id);
sp->free(sp);
return;
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index a28ab9af2669..39b08ea41ea6 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -925,6 +925,9 @@ void qla24xx_handle_gpdb_event(scsi_qla_host_t *vha, struct event_arg *ea)
* must have triggered the session to be re-validate.
* session is still valid.
*/
+ ql_dbg(ql_dbg_disc, vha, 0x20d6,
+ "%s %d %8phC session revalidate success\n",
+ __func__, __LINE__, fcport->port_name);
fcport->disc_state = DSC_LOGIN_COMPLETE;
}
spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
@@ -1049,9 +1052,8 @@ void qla24xx_handle_rscn_event(fc_port_t *fcport, struct event_arg *ea)
switch (fcport->disc_state) {
case DSC_DELETED:
case DSC_LOGIN_COMPLETE:
- qla24xx_post_gidpn_work(fcport->vha, fcport);
+ qla24xx_post_gpnid_work(fcport->vha, &ea->id);
break;
-
default:
break;
}
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 61b76ef187b8..78e9569dbe5a 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -4760,10 +4760,39 @@ void qla24xx_create_new_sess(struct scsi_qla_host *vha, struct qla_work_evt *e)
spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
if (fcport) {
- if (pla)
+ if (pla) {
qlt_plogi_ack_unref(vha, pla);
- else
- qla24xx_async_gffid(vha, fcport);
+ } else {
+ spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
+ tfcp = qla2x00_find_fcport_by_nportid(vha,
+ &e->u.new_sess.id, 1);
+ if (tfcp && (tfcp != fcport)) {
+ /*
+ * We have a conflict fcport with same NportID.
+ */
+ ql_dbg(ql_dbg_disc, vha, 0xffff,
+ "%s %8phC found conflict b4 add. DS %d LS %d\n",
+ __func__, tfcp->port_name, tfcp->disc_state,
+ tfcp->fw_login_state);
+
+ switch (tfcp->disc_state) {
+ case DSC_DELETED:
+ break;
+ case DSC_DELETE_PEND:
+ fcport->login_pause = 1;
+ tfcp->conflict = fcport;
+ break;
+ default:
+ fcport->login_pause = 1;
+ tfcp->conflict = fcport;
+ qlt_schedule_sess_for_deletion_lock
+ (tfcp);
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
+ qla24xx_async_gnl(vha, fcport);
+ }
}
if (free_fcport) {
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 8f894a32b8e0..612ab323104c 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -890,6 +890,17 @@ qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
pla->ref_count, pla, link);
+ if (link == QLT_PLOGI_LINK_CONFLICT) {
+ switch (sess->disc_state) {
+ case DSC_DELETED:
+ case DSC_DELETE_PEND:
+ pla->ref_count--;
+ return;
+ default:
+ break;
+ }
+ }
+
if (sess->plogi_link[link])
qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
@@ -4737,6 +4748,10 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
sess->d_id = port_id;
sess->login_gen++;
+ ql_dbg(ql_dbg_disc, vha, 0x20f9,
+ "%s %d %8phC DS %d\n",
+ __func__, __LINE__, sess->port_name, sess->disc_state);
+
switch (sess->disc_state) {
case DSC_DELETED:
qlt_plogi_ack_unref(vha, pla);
@@ -4786,12 +4801,20 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
}
if (conflict_sess) {
- ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
- "PRLI with conflicting sess %p port %8phC\n",
- conflict_sess, conflict_sess->port_name);
- qlt_send_term_imm_notif(vha, iocb, 1);
- res = 0;
- break;
+ switch (conflict_sess->disc_state) {
+ case DSC_DELETED:
+ case DSC_DELETE_PEND:
+ break;
+ default:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
+ "PRLI with conflicting sess %p port %8phC\n",
+ conflict_sess, conflict_sess->port_name);
+ conflict_sess->fw_login_state =
+ DSC_LS_PORT_UNAVAIL;
+ qlt_send_term_imm_notif(vha, iocb, 1);
+ res = 0;
+ break;
+ }
}
if (sess != NULL) {