path: root/drivers/scsi/lpfc/lpfc_init.c
diff options
authorJames Smart <jsmart2021@gmail.com>2019-08-14 16:57:10 -0700
committerMartin K. Petersen <martin.petersen@oracle.com>2019-08-19 22:41:12 -0400
commit0d8af096430ed810aacade5f564e5b98347137d4 (patch)
tree67867467394d4e4d794ace20ba7d822f9d61f8f9 /drivers/scsi/lpfc/lpfc_init.c
parentscsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware. (diff)
scsi: lpfc: Add NVMe sequence level error recovery support
FC-NVMe-2 added support for sequence level error recovery in the FC-NVME protocol. This allows for the detection of errors and lost frames and immediate retransmission of data to avoid exchange termination, which escalates into NVMeoFC connection and association failures. A significant RAS improvement. The driver is modified to indicate support for SLER in the NVMe PRLI is issues and to check for support in the PRLI response. When both sides support it, the driver will set a bit in the WQE to enable the recovery behavior on the exchange. The adapter will take care of all detection and retransmission. 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>
Diffstat (limited to '')
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index fa3741f12089..d71f1b066e30 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -11846,6 +11846,14 @@ fcponly:
phba->mds_diags_support = 0;
+ /*
+ * Check if the SLI port supports NSLER
+ */
+ if (bf_get(cfg_nsler, mbx_sli4_parameters))
+ phba->nsler = 1;
+ else
+ phba->nsler = 0;
return 0;