diff options
| author | James Smart <jsmart2021@gmail.com> | 2019-08-14 16:57:10 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-08-19 22:41:12 -0400 |
| commit | 0d8af096430ed810aacade5f564e5b98347137d4 (patch) | |
| tree | 67867467394d4e4d794ace20ba7d822f9d61f8f9 /drivers/scsi/lpfc/lpfc_nvme.c | |
| parent | d79c9e9d4b3d9330ee38f392a7c98e0fc494f7f8 (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 'drivers/scsi/lpfc/lpfc_nvme.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_nvme.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c index 5e48318eb7a9..f66859d928ac 100644 --- a/drivers/scsi/lpfc/lpfc_nvme.c +++ b/drivers/scsi/lpfc/lpfc_nvme.c @@ -1255,6 +1255,9 @@ lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport, sizeof(uint32_t) * 8); cstat->control_requests++; } + + if (pnode->nlp_nvme_info & NLP_NVME_NSLER) + bf_set(wqe_erp, &wqe->generic.wqe_com, 1); /* * Finish initializing those WQE fields that are independent * of the nvme_cmnd request_buffer |