scsi: qla2xxx: Relogin to target port on a cable swap
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: 726b854870
("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>
This commit is contained in:
parent
3be63b1e18
commit
5ef696aa9f
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@ -3171,43 +3171,136 @@ void qla24xx_async_gpnid_done(scsi_qla_host_t *vha, srb_t *sp)
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void qla24xx_handle_gpnid_event(scsi_qla_host_t *vha, struct event_arg *ea)
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{
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fc_port_t *fcport;
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unsigned long flags;
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fc_port_t *fcport, *conflict, *t;
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spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
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fcport = qla2x00_find_fcport_by_wwpn(vha, ea->port_name, 1);
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spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
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ql_dbg(ql_dbg_disc, vha, 0xffff,
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"%s %d port_id: %06x\n",
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__func__, __LINE__, ea->id.b24);
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if (fcport) {
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/* cable moved. just plugged in */
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fcport->rscn_gen++;
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fcport->d_id = ea->id;
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fcport->scan_state = QLA_FCPORT_FOUND;
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fcport->flags |= FCF_FABRIC_DEVICE;
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switch (fcport->disc_state) {
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case DSC_DELETED:
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ql_dbg(ql_dbg_disc, vha, 0x210d,
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"%s %d %8phC login\n", __func__, __LINE__,
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fcport->port_name);
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qla24xx_fcport_handle_login(vha, fcport);
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break;
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case DSC_DELETE_PEND:
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break;
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default:
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ql_dbg(ql_dbg_disc, vha, 0x2064,
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"%s %d %8phC post del sess\n",
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__func__, __LINE__, fcport->port_name);
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qlt_schedule_sess_for_deletion_lock(fcport);
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break;
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if (ea->rc) {
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/* cable is disconnected */
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list_for_each_entry_safe(fcport, t, &vha->vp_fcports, list) {
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if (fcport->d_id.b24 == ea->id.b24) {
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ql_dbg(ql_dbg_disc, vha, 0xffff,
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"%s %d %8phC DS %d\n",
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__func__, __LINE__,
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fcport->port_name,
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fcport->disc_state);
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fcport->scan_state = QLA_FCPORT_SCAN;
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switch (fcport->disc_state) {
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case DSC_DELETED:
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case DSC_DELETE_PEND:
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break;
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default:
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ql_dbg(ql_dbg_disc, vha, 0xffff,
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"%s %d %8phC post del sess\n",
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__func__, __LINE__,
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fcport->port_name);
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qlt_schedule_sess_for_deletion_lock
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(fcport);
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break;
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}
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}
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}
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} else {
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/* create new fcport */
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ql_dbg(ql_dbg_disc, vha, 0x2065,
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"%s %d %8phC post new sess\n",
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__func__, __LINE__, ea->port_name);
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/* cable is connected */
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fcport = qla2x00_find_fcport_by_wwpn(vha, ea->port_name, 1);
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if (fcport) {
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list_for_each_entry_safe(conflict, t, &vha->vp_fcports,
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list) {
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if ((conflict->d_id.b24 == ea->id.b24) &&
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(fcport != conflict)) {
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/* 2 fcports with conflict Nport ID or
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* an existing fcport is having nport ID
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* conflict with new fcport.
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*/
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qla24xx_post_newsess_work(vha, &ea->id, ea->port_name, NULL);
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ql_dbg(ql_dbg_disc, vha, 0xffff,
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"%s %d %8phC DS %d\n",
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__func__, __LINE__,
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conflict->port_name,
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conflict->disc_state);
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conflict->scan_state = QLA_FCPORT_SCAN;
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switch (conflict->disc_state) {
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case DSC_DELETED:
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case DSC_DELETE_PEND:
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break;
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default:
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ql_dbg(ql_dbg_disc, vha, 0xffff,
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"%s %d %8phC post del sess\n",
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__func__, __LINE__,
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conflict->port_name);
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qlt_schedule_sess_for_deletion_lock
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(conflict);
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break;
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}
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}
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}
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fcport->rscn_gen++;
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fcport->scan_state = QLA_FCPORT_FOUND;
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fcport->flags |= FCF_FABRIC_DEVICE;
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switch (fcport->disc_state) {
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case DSC_LOGIN_COMPLETE:
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/* recheck session is still intact. */
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ql_dbg(ql_dbg_disc, vha, 0x210d,
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"%s %d %8phC revalidate session with ADISC\n",
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__func__, __LINE__, fcport->port_name);
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qla24xx_post_gpdb_work(vha, fcport,
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PDO_FORCE_ADISC);
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break;
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case DSC_DELETED:
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ql_dbg(ql_dbg_disc, vha, 0x210d,
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"%s %d %8phC login\n", __func__, __LINE__,
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fcport->port_name);
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fcport->d_id = ea->id;
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qla24xx_fcport_handle_login(vha, fcport);
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break;
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case DSC_DELETE_PEND:
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fcport->d_id = ea->id;
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break;
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default:
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fcport->d_id = ea->id;
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break;
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}
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} else {
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list_for_each_entry_safe(conflict, t, &vha->vp_fcports,
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list) {
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if (conflict->d_id.b24 == ea->id.b24) {
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/* 2 fcports with conflict Nport ID or
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* an existing fcport is having nport ID
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* conflict with new fcport.
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*/
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ql_dbg(ql_dbg_disc, vha, 0xffff,
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"%s %d %8phC DS %d\n",
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__func__, __LINE__,
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conflict->port_name,
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conflict->disc_state);
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conflict->scan_state = QLA_FCPORT_SCAN;
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switch (conflict->disc_state) {
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case DSC_DELETED:
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case DSC_DELETE_PEND:
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break;
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default:
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ql_dbg(ql_dbg_disc, vha, 0xffff,
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"%s %d %8phC post del sess\n",
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__func__, __LINE__,
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conflict->port_name);
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qlt_schedule_sess_for_deletion_lock
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(conflict);
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break;
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}
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}
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}
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/* create new fcport */
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ql_dbg(ql_dbg_disc, vha, 0x2065,
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"%s %d %8phC post new sess\n",
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__func__, __LINE__, ea->port_name);
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qla24xx_post_newsess_work(vha, &ea->id,
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ea->port_name, NULL);
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}
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}
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}
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@ -3248,12 +3341,13 @@ static void qla2x00_async_gpnid_sp_done(void *s, int res)
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spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
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if (res) {
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if (res == QLA_FUNCTION_TIMEOUT)
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if (res == QLA_FUNCTION_TIMEOUT) {
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qla24xx_post_gpnid_work(sp->vha, &ea.id);
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sp->free(sp);
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return;
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sp->free(sp);
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return;
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}
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} else if (sp->gen1) {
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/* There was anoter RSNC for this Nport ID */
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/* There was another RSCN for this Nport ID */
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qla24xx_post_gpnid_work(sp->vha, &ea.id);
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sp->free(sp);
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return;
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@ -925,6 +925,9 @@ void qla24xx_handle_gpdb_event(scsi_qla_host_t *vha, struct event_arg *ea)
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* must have triggered the session to be re-validate.
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* session is still valid.
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*/
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ql_dbg(ql_dbg_disc, vha, 0x20d6,
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"%s %d %8phC session revalidate success\n",
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__func__, __LINE__, fcport->port_name);
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fcport->disc_state = DSC_LOGIN_COMPLETE;
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}
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spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
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@ -1049,9 +1052,8 @@ void qla24xx_handle_rscn_event(fc_port_t *fcport, struct event_arg *ea)
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switch (fcport->disc_state) {
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case DSC_DELETED:
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case DSC_LOGIN_COMPLETE:
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qla24xx_post_gidpn_work(fcport->vha, fcport);
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qla24xx_post_gpnid_work(fcport->vha, &ea->id);
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break;
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default:
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break;
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}
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@ -4760,10 +4760,39 @@ void qla24xx_create_new_sess(struct scsi_qla_host *vha, struct qla_work_evt *e)
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spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
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if (fcport) {
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if (pla)
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if (pla) {
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qlt_plogi_ack_unref(vha, pla);
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else
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qla24xx_async_gffid(vha, fcport);
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} else {
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spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
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tfcp = qla2x00_find_fcport_by_nportid(vha,
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&e->u.new_sess.id, 1);
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if (tfcp && (tfcp != fcport)) {
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/*
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* We have a conflict fcport with same NportID.
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*/
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ql_dbg(ql_dbg_disc, vha, 0xffff,
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"%s %8phC found conflict b4 add. DS %d LS %d\n",
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__func__, tfcp->port_name, tfcp->disc_state,
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tfcp->fw_login_state);
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switch (tfcp->disc_state) {
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case DSC_DELETED:
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break;
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case DSC_DELETE_PEND:
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fcport->login_pause = 1;
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tfcp->conflict = fcport;
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break;
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default:
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fcport->login_pause = 1;
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tfcp->conflict = fcport;
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qlt_schedule_sess_for_deletion_lock
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(tfcp);
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break;
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}
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}
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spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
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qla24xx_async_gnl(vha, fcport);
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}
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}
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if (free_fcport) {
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@ -890,6 +890,17 @@ qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla,
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iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0],
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pla->ref_count, pla, link);
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if (link == QLT_PLOGI_LINK_CONFLICT) {
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switch (sess->disc_state) {
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case DSC_DELETED:
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case DSC_DELETE_PEND:
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pla->ref_count--;
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return;
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default:
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break;
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}
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}
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if (sess->plogi_link[link])
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qlt_plogi_ack_unref(vha, sess->plogi_link[link]);
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@ -4737,6 +4748,10 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
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sess->d_id = port_id;
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sess->login_gen++;
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ql_dbg(ql_dbg_disc, vha, 0x20f9,
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"%s %d %8phC DS %d\n",
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__func__, __LINE__, sess->port_name, sess->disc_state);
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switch (sess->disc_state) {
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case DSC_DELETED:
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qlt_plogi_ack_unref(vha, pla);
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@ -4786,12 +4801,20 @@ static int qlt_24xx_handle_els(struct scsi_qla_host *vha,
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}
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if (conflict_sess) {
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
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"PRLI with conflicting sess %p port %8phC\n",
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conflict_sess, conflict_sess->port_name);
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qlt_send_term_imm_notif(vha, iocb, 1);
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res = 0;
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break;
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switch (conflict_sess->disc_state) {
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case DSC_DELETED:
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case DSC_DELETE_PEND:
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break;
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default:
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b,
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"PRLI with conflicting sess %p port %8phC\n",
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conflict_sess, conflict_sess->port_name);
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conflict_sess->fw_login_state =
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DSC_LS_PORT_UNAVAIL;
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qlt_send_term_imm_notif(vha, iocb, 1);
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res = 0;
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break;
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}
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}
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if (sess != NULL) {
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