Commit af22f0c7 authored Nov 25, 2019 by Roman Bolshakov Committed by Martin K. Petersen Dec 09, 2019

scsi: qla2xxx: Ignore PORT UPDATE after N2N PLOGI

PORT UPDATE asynchronous event is generated on the host that issues PLOGI
ELS (in the case of higher WWPN). In that case, the event shouldn't be
handled as it sets unwanted DPC flags (i.e. LOOP_RESYNC_NEEDED) that
trigger link flap.

Ignore the event if the host has higher WWPN, but handle otherwise.

Cc: Quinn Tran <qutran@marvell.com>
Link: https://lore.kernel.org/r/20191125165702.1013-13-r.bolshakov@yadro.com


Acked-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Tested-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

parent dabc5ec9

drivers/scsi/qla2xxx/qla_mbx.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -3921,6 +3921,7 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
		vha->d_id.b24 = 0;
		vha->d_id.b.al_pa = 1;
		ha->flags.n2n_bigger = 1;
		ha->flags.n2n_ae = 0;

		id.b.al_pa = 2;
		ql_dbg(ql_dbg_async, vha, 0x5075,
		@@ -3931,6 +3932,7 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
		"Format 1: Remote login - Waiting for WWPN %8phC.\n",
		rptid_entry->u.f1.port_name);
		ha->flags.n2n_bigger = 0;
		ha->flags.n2n_ae = 1;
		}
		qla24xx_post_newsess_work(vha, &id,
		rptid_entry->u.f1.port_name,
		@@ -3942,7 +3944,6 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
		/* if our portname is higher then initiate N2N login */

		set_bit(N2N_LOGIN_NEEDED, &vha->dpc_flags);
		ha->flags.n2n_ae = 1;
		return;
		break;
		case TOPO_FL:

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