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scsi: lpfc: Allow PLOGI retry if previous PLOGI was aborted 

A remote nport can stop responding to PLOGI beyond the ELS I/O timeout
under some fault conditions.  When this happens, the non-response triggers
a dev_loss_tmo event from the transport which causes the driver to abort
the PLOGI and stop any retries. This was due to a policy in the ELS
completion handler whenever an ELS was terminated due to driver request.

Revise the ELS completion path to detect PLOGIs that were aborted and
allow retries.

Link: https://lore.kernel.org/r/20211020211417.88754-6-jsmart2021@gmail.com
Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2021-10-20 14:14:14 -07:00 committed by Martin K. Petersen
parent 79b20becce
commit 15af02d8a5
1 changed files with 13 additions and 0 deletions
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13
drivers/scsi/lpfc/lpfc_els.c
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@ -4577,6 +4577,19 @@ lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
retry = 1;
delay = 100;
break;
case IOERR_SLI_ABORTED:
/* Retry ELS PLOGI command?
* Possibly the rport just wasn't ready.
*/
if (cmd == ELS_CMD_PLOGI) {
/* No retry if state change */
if (ndlp &&
ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
goto out_retry;
retry = 1;
maxretry = 2;
}
break;
}
break;