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[07/14] lpfc: Fix NVME I/O failover to non-optimized path

Message ID 20210910233159.115896-8-jsmart2021@gmail.com
State New
Headers show
Series lpfc: Update lpfc to revision 14.0.0.2 | expand

Commit Message

James Smart Sept. 10, 2021, 11:31 p.m. UTC 
Currently, we hold off unregistering with NVME transport layer until
GID_FT or ADISC completes upon receipt of RSCN. In the ADISC discovery
routine, for nodes not found in the GID_FT response, the nodes are
unregistered from the scsi transport but not UNREG_RPI'd. Meaning
outstanding WQEs continue to be outstanding and were not failed back to
the OS. If an NVMe device, this mean there wasn't initial termination of
the I/O's so they could be issued on a different NVME path.

Fix by unregistering the RPI so that I/O is cancelled.

Fixes: 0614568361b0 ("scsi: lpfc: Delay unregistering from transport until GIDFT or ADISC completes")
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>
---
 drivers/scsi/lpfc/lpfc_els.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index c6eae545aabf..40d166aeb466 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -6224,6 +6224,7 @@  lpfc_els_disc_adisc(struct lpfc_vport *vport)
 			 * from backend
 			 */
 			lpfc_nlp_unreg_node(vport, ndlp);
+			lpfc_unreg_rpi(vport, ndlp);
 			continue;
 		}