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_hw4.h | |
| 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_hw4.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_hw4.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h index e198de8eda32..bd533475c86a 100644 --- a/drivers/scsi/lpfc/lpfc_hw4.h +++ b/drivers/scsi/lpfc/lpfc_hw4.h @@ -3480,6 +3480,10 @@ struct lpfc_sli4_parameters { #define cfg_bv1s_MASK 0x00000001 #define cfg_bv1s_WORD word19 +#define cfg_nsler_SHIFT 12 +#define cfg_nsler_MASK 0x00000001 +#define cfg_nsler_WORD word19 + uint32_t word20; #define cfg_max_tow_xri_SHIFT 0 #define cfg_max_tow_xri_MASK 0x0000ffff @@ -4621,6 +4625,7 @@ struct lpfc_nvme_prli { #define prli_type_code_WORD word1 uint32_t word_rsvd2; uint32_t word_rsvd3; + uint32_t word4; #define prli_fba_SHIFT 0 #define prli_fba_MASK 0x00000001 @@ -4637,6 +4642,9 @@ struct lpfc_nvme_prli { #define prli_conf_SHIFT 7 #define prli_conf_MASK 0x00000001 #define prli_conf_WORD word4 +#define prli_nsler_SHIFT 8 +#define prli_nsler_MASK 0x00000001 +#define prli_nsler_WORD word4 uint32_t word5; #define prli_fb_sz_SHIFT 0 #define prli_fb_sz_MASK 0x0000ffff |