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scsi: lpfc: fcoe: Fix link down issue after 1000+ link bounces

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On FCoE adapters, when running link bounce test in a loop, initiator
failed to login with switch switch and required driver reload to
recover. Switch reached a point where all subsequent FLOGIs would be
LS_RJT'd. Further testing showed the condition to be related to not
performing FCF discovery between FLOGI's.

Fix by monitoring FLOGI failures and once a repeated error is seen
repeat FCF discovery.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart
2018-10-23 13:41:06 -07:00
committed by Martin K. Petersen
parent 191e2f7493
commit 036cad1f1a
5 changed files with 26 additions and 10 deletions
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20
drivers/scsi/lpfc/lpfc_hbadisc.c
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@@ -1992,6 +1992,26 @@ int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
"failover and change port state:x%x/x%x\n",
phba->pport->port_state, LPFC_VPORT_UNKNOWN);
phba->pport->port_state = LPFC_VPORT_UNKNOWN;
if (!phba->fcf.fcf_redisc_attempted) {
lpfc_unregister_fcf(phba);
rc = lpfc_sli4_redisc_fcf_table(phba);
if (!rc) {
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"3195 Rediscover FCF table\n");
phba->fcf.fcf_redisc_attempted = 1;
lpfc_sli4_clear_fcf_rr_bmask(phba);
} else {
lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
"3196 Rediscover FCF table "
"failed. Status:x%x\n", rc);
}
} else {
lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
"3197 Already rediscover FCF table "
"attempted. No more retry\n");
}
goto stop_flogi_current_fcf;
} else {
lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,