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scsi: lpfc: Decrement ndlp kref after FDISC retries exhausted

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The kref for Fabric_DID ndlps is not decremented after repeated FDISC
failures and exhausting maximum allowed retries.  This can leave the
ndlp lingering unnecessarily.  Add a test and set bit operation for the
NLP_DROPPED flag. If not previously set, then a kref is decremented. The
ndlp is freed when the remaining reference for the completing ELS is
put.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Message-ID: <20250915180811.137530-6-justintee8345@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Justin Tee 2025-09-15 11:08:02 -07:00 committed by Martin K. Petersen
parent a4809b98eb
commit b5bf6d681f
1 changed files with 5 additions and 0 deletions
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5
drivers/scsi/lpfc/lpfc_els.c
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@ -11259,6 +11259,11 @@ lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
"0126 FDISC cmpl status: x%x/x%x)\n",
ulp_status, ulp_word4);
/* drop initial reference */
if (!test_and_set_bit(NLP_DROPPED, &ndlp->nlp_flag))
lpfc_nlp_put(ndlp);
goto fdisc_failed;
}