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From: James Smart <jsmart2021@gmail.com>
To: linux-scsi@vger.kernel.org
Cc: James Smart <jsmart2021@gmail.com>,
	Dick Kennedy <dick.kennedy@broadcom.com>
Subject: [PATCH 3/9] lpfc: Remove re-binding of nvme rport during registration
Date: Fri,  1 May 2020 14:43:04 -0700	[thread overview]
Message-ID: <20200501214310.91713-4-jsmart2021@gmail.com> (raw)
In-Reply-To: <20200501214310.91713-1-jsmart2021@gmail.com>

The lldd rebinds the ndlp with rport during a nvme rport registration
(va nvme_fc_register_remoteport). If rport & ndlp pointers are same as
the previous one, the lldd will re-use the ndlp and rport association
without re-iniitalization. This assumption is incorrect. The lldd should
be ignorant of whether the returned rport pointer is new or not, and
should always assume it is new.

Remove the re-binding code, always assumes that rport pointer received
from transport is a new pointer.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
---
 drivers/scsi/lpfc/lpfc_nvme.c | 32 --------------------------------
 1 file changed, 32 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c
index 43df08aeecf1..3121cf37a572 100644
--- a/drivers/scsi/lpfc/lpfc_nvme.c
+++ b/drivers/scsi/lpfc/lpfc_nvme.c
@@ -2322,38 +2322,6 @@ lpfc_nvme_register_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 		spin_unlock_irq(&vport->phba->hbalock);
 		rport = remote_port->private;
 		if (oldrport) {
-			/* New remoteport record does not guarantee valid
-			 * host private memory area.
-			 */
-			if (oldrport == remote_port->private) {
-				/* Same remoteport - ndlp should match.
-				 * Just reuse.
-				 */
-				lpfc_printf_vlog(ndlp->vport, KERN_INFO,
-						 LOG_NVME_DISC,
-						 "6014 Rebind lport to current "
-						 "remoteport x%px wwpn 0x%llx, "
-						 "Data: x%x x%x x%px x%px x%x "
-						 " x%06x\n",
-						 remote_port,
-						 remote_port->port_name,
-						 remote_port->port_id,
-						 remote_port->port_role,
-						 oldrport->ndlp,
-						 ndlp,
-						 ndlp->nlp_type,
-						 ndlp->nlp_DID);
-
-				/* It's a complete rebind only if the driver
-				 * is registering with the same ndlp. Otherwise
-				 * the driver likely executed a node swap
-				 * prior to this registration and the ndlp to
-				 * remoteport binding needs to be redone.
-				 */
-				if (prev_ndlp == ndlp)
-					return 0;
-
-			}
 
 			/* Sever the ndlp<->rport association
 			 * before dropping the ndlp ref from
-- 
2.26.1


  parent reply	other threads:[~2020-05-01 21:43 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-01 21:43 [PATCH 0/9] lpfc: Update lpfc to revision 12.8.0.1 James Smart
2020-05-01 21:43 ` [PATCH 1/9] lpfc: Synchronize NVME transport and lpfc driver devloss_tmo James Smart
2020-05-03 14:42   ` James Smart
2020-05-07  9:11   ` Hannes Reinecke
2020-05-01 21:43 ` [PATCH 2/9] lpfc: Maintain atomic consistency of queue_claimed flag James Smart
2020-05-07  9:12   ` Hannes Reinecke
2020-05-01 21:43 ` James Smart [this message]
2020-05-07  9:13   ` [PATCH 3/9] lpfc: Remove re-binding of nvme rport during registration Hannes Reinecke
2020-05-01 21:43 ` [PATCH 4/9] lpfc: Fix negation of else clause in lpfc_prep_node_fc4type James Smart
2020-05-07  9:14   ` Hannes Reinecke
2020-05-01 21:43 ` [PATCH 5/9] lpfc: Change default queue allocation for reduced memory consumption James Smart
2020-05-07  9:49   ` Hannes Reinecke
2020-05-01 21:43 ` [PATCH 6/9] lpfc: Remove unnecessary lockdep_assert_held calls James Smart
2020-05-07  9:50   ` Hannes Reinecke
2020-05-01 21:43 ` [PATCH 7/9] lpfc: Fix noderef and address space warnings James Smart
2020-05-07  9:50   ` Hannes Reinecke
2020-05-01 21:43 ` [PATCH 8/9] lpfc: Fix MDS Diagnostic Enablement definition James Smart
2020-05-07  9:50   ` Hannes Reinecke
2020-05-01 21:43 ` [PATCH 9/9] lpfc: Update lpfc version to 12.8.0.1 James Smart
2020-05-07  9:51   ` Hannes Reinecke
2020-05-08  2:54 ` [PATCH 0/9] lpfc: Update lpfc to revision 12.8.0.1 Martin K. Petersen

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