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scsi: lpfc: Fix port relogin failure due to GID_FT interaction 

In cases of remote-port-side cable pull/replug, there happens to be a
target that upon replug will send the port a PLOGI, a PRLI, and a LOGO.
When this sequence is received by the driver, the PLOGI accepted and a
GFT_ID is issued to find the protocol support for the remote port. While
the GFT_ID is outstanding, a LOGO is received. The driver logs the remote
port out and unregisters the RPI and schedules a new PLOGI transmission.
However, the GFT_ID was not terminated. When it completed, the driver
attempted to transition the remote port to PRLI transmission, which cancels
the PLOGI scheduling. The PRLI transmit attempt is rejected by the adapter
as the remote port is not logged in. No retry is attempted as it's expected
the logout is noted and the supposedly scheduled PLOGI should address the
state. As there is no PLOGI, the remote port does not get re-discovered.

Fix by aborting the outstanding GFT_ID if the related remote port is logged
out.

Ensure a PRLI transmit attempt only occurs if the remote port is logging
in. This avoids the incorrect attempt while logged out.

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 2019-08-14 16:56:37 -07:00 committed by Martin K. Petersen
parent 296012285c
commit 57178b9275
2 changed files with 18 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/scsi/lpfc/lpfc_ct.c
View File

@ -1210,13 +1210,18 @@ lpfc_cmpl_ct_cmd_gft_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
ndlp->nlp_fc4_type |= NLP_FC4_NVME;
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"3064 Setting ndlp %p, DID x%06x with "
"FC4 x%08x, Data: x%08x x%08x\n",
"FC4 x%08x, Data: x%08x x%08x %d\n",
ndlp, did, ndlp->nlp_fc4_type,
FC_TYPE_FCP, FC_TYPE_NVME);
ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
FC_TYPE_FCP, FC_TYPE_NVME,
ndlp->nlp_state);
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
lpfc_issue_els_prli(vport, ndlp, 0);
if (ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) {
ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
lpfc_nlp_set_state(vport, ndlp,
NLP_STE_PRLI_ISSUE);
lpfc_issue_els_prli(vport, ndlp, 0);
}
}
} else
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,

8
drivers/scsi/lpfc/lpfc_nportdisc.c
View File

@ -1661,6 +1661,7 @@ lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
LPFC_MBOXQ_t *mb;
LPFC_MBOXQ_t *nextmb;
struct lpfc_dmabuf *mp;
struct lpfc_nodelist *ns_ndlp;
cmdiocb = (struct lpfc_iocbq *) arg;
@ -1693,6 +1694,13 @@ lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
}
spin_unlock_irq(&phba->hbalock);
/* software abort if any GID_FT is outstanding */
if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
if (ns_ndlp && NLP_CHK_NODE_ACT(ns_ndlp))
lpfc_els_abort(phba, ns_ndlp);
}
lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
return ndlp->nlp_state;
}