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scsi: lpfc: Fix pt2pt connection does not recover after LOGO 

On a pt2pt setup, between 2 initiators, if one side issues a a LOGO, there
is no relogin attempt. The FC specs are grey in this area on which port
(higher wwn or not) is to re-login.

As there is no spec guidance, unconditionally re-PLOGI after the logout to
ensure a login is re-established.

Link: https://lore.kernel.org/r/20210301171821.3427-8-jsmart2021@gmail.com
Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Dick Kennedy <dick.kennedy@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 2021-03-01 09:18:06 -08:00 committed by Martin K. Petersen
parent 6b6eaf8a53
commit bd4f510042
1 changed files with 7 additions and 2 deletions
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9
drivers/scsi/lpfc/lpfc_nportdisc.c
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@ -913,9 +913,14 @@ lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
}
} else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
((ndlp->nlp_type & NLP_FCP_TARGET) ||
!(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
(ndlp->nlp_type & NLP_NVME_TARGET) ||
(vport->fc_flag & FC_PT2PT))) ||
(ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
/* Only try to re-login if this is NOT a Fabric Node */
/* Only try to re-login if this is NOT a Fabric Node
* AND the remote NPORT is a FCP/NVME Target or we
* are in pt2pt mode. NLP_STE_ADISC_ISSUE is a special
* case for LOGO as a response to ADISC behavior.
*/
mod_timer(&ndlp->nlp_delayfunc,
jiffies + msecs_to_jiffies(1000 * 1));
spin_lock_irq(&ndlp->lock);