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scsi: lpfc: Allow reduced polling rate for nvme_admin_async_event cmd completion

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NVMe Asynchronous Event Request commands have no command timeout value per
specifications.

Set WQE option to allow a reduced FLUSH polling rate for I/O error
detection specifically for nvme_admin_async_event commands.

Link: https://lore.kernel.org/r/20220603174329.63777-9-jsmart2021@gmail.com
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>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2022-06-03 10:43:28 -07:00 committed by Martin K. Petersen
parent ea7bd1f393
commit 2e7e9c0c1e
2 changed files with 12 additions and 2 deletions
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3
drivers/scsi/lpfc/lpfc_hw4.h
View File

@ -4487,6 +4487,9 @@ struct wqe_common {
#define wqe_sup_SHIFT 6
#define wqe_sup_MASK 0x00000001
#define wqe_sup_WORD word11
#define wqe_ffrq_SHIFT 6
#define wqe_ffrq_MASK 0x00000001
#define wqe_ffrq_WORD word11
#define wqe_wqec_SHIFT 7
#define wqe_wqec_MASK 0x00000001
#define wqe_wqec_WORD word11

11
drivers/scsi/lpfc/lpfc_nvme.c
View File

@ -1207,7 +1207,8 @@ lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport,
{
struct lpfc_hba *phba = vport->phba;
struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd;
struct lpfc_iocbq *pwqeq = &(lpfc_ncmd->cur_iocbq);
struct nvme_common_command *sqe;
struct lpfc_iocbq *pwqeq = &lpfc_ncmd->cur_iocbq;
union lpfc_wqe128 *wqe = &pwqeq->wqe;
uint32_t req_len;
@ -1264,8 +1265,14 @@ lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport,
cstat->control_requests++;
}
if (pnode->nlp_nvme_info & NLP_NVME_NSLER)
if (pnode->nlp_nvme_info & NLP_NVME_NSLER) {
bf_set(wqe_erp, &wqe->generic.wqe_com, 1);
sqe = &((struct nvme_fc_cmd_iu *)
nCmd->cmdaddr)->sqe.common;
if (sqe->opcode == nvme_admin_async_event)
bf_set(wqe_ffrq, &wqe->generic.wqe_com, 1);
}
/*
* Finish initializing those WQE fields that are independent
* of the nvme_cmnd request_buffer