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authorJames Smart <jsmart2021@gmail.com>2022-06-03 19:43:28 +0200
committerMartin K. Petersen <martin.petersen@oracle.com>2022-06-08 03:38:18 +0200
commit2e7e9c0c1ec05f18d320ecc8a31eec59d2af1af9 (patch)
treebd9cd9de740cc62acd827ea4c81996dbcb8b72f7 /drivers
parentscsi: lpfc: Add more logging of cmd and cqe information for aborted NVMe cmds (diff)
downloadlinux-2e7e9c0c1ec05f18d320ecc8a31eec59d2af1af9.tar.xz
linux-2e7e9c0c1ec05f18d320ecc8a31eec59d2af1af9.zip
scsi: lpfc: Allow reduced polling rate for nvme_admin_async_event cmd completion
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/scsi/lpfc/lpfc_hw4.h3
-rw-r--r--drivers/scsi/lpfc/lpfc_nvme.c11
2 files changed, 12 insertions, 2 deletions
diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h
index 8511369d2cf8..f024415731ac 100644
--- a/drivers/scsi/lpfc/lpfc_hw4.h
+++ b/drivers/scsi/lpfc/lpfc_hw4.h
@@ -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
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c
index 9cc22cefcb37..cd10ee6482fc 100644
--- a/drivers/scsi/lpfc/lpfc_nvme.c
+++ b/drivers/scsi/lpfc/lpfc_nvme.c
@@ -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