From: James Smart <jsmart2021@gmail.com>
Date: Tue, 12 Mar 2019 16:30:10 -0700
Subject: [PATCH] scsi: lpfc: Fix lpfc_nvmet_mrq attribute handling when 0
References: bsc#1136217,jsc#SLE-4722
Git-commit: 982ab128dcf8b77bc18df74a83ffa70bcd59ccd3
Patch-mainline: v5.2-rc1
Currently, when lpfc_nvmet_mrq is 0 it could mean 2 different things
depending on when its looked at. If at module load time it specifies the
default number of hardware queues to allocate, with 0 meaning default to
the number of CPUs. But post module load, a value of zero means to disable
mrq use.
Changed the driver so that enablement of mrq is based on whether nvme
target mode is enabled or not. When enabled, mrq is enabled. Thus, the
cfg_nvemt_mrq field only specifies the number of mrq queues to enable, with
0 defaulting to the number of cpus.
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>
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/scsi/lpfc/lpfc_attr.c | 3 ++-
drivers/scsi/lpfc/lpfc_init.c | 8 ++++----
drivers/scsi/lpfc/lpfc_nvmet.h | 1 -
3 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 0468045e14be..1762135dc5e3 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -7026,6 +7026,7 @@ lpfc_get_cfgparam(struct lpfc_hba *phba)
if (phba->sli_rev != LPFC_SLI_REV4) {
/* NVME only supported on SLI4 */
phba->nvmet_support = 0;
+ phba->cfg_nvmet_mrq = 0;
phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
phba->cfg_enable_bbcr = 0;
phba->cfg_xri_rebalancing = 0;
@@ -7127,7 +7128,7 @@ lpfc_nvme_mod_param_dep(struct lpfc_hba *phba)
} else {
/* Not NVME Target mode. Turn off Target parameters. */
phba->nvmet_support = 0;
- phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_OFF;
+ phba->cfg_nvmet_mrq = 0;
phba->cfg_nvmet_fb_size = 0;
}
}
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 0f030b3c5563..9042938c4c4f 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -8605,9 +8605,9 @@ lpfc_sli4_queue_verify(struct lpfc_hba *phba)
if (phba->nvmet_support) {
if (phba->cfg_irq_chann < phba->cfg_nvmet_mrq)
phba->cfg_nvmet_mrq = phba->cfg_irq_chann;
+ if (phba->cfg_nvmet_mrq > LPFC_NVMET_MRQ_MAX)
+ phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_MAX;
}
- if (phba->cfg_nvmet_mrq > LPFC_NVMET_MRQ_MAX)
- phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_MAX;
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2574 IO channels: hdwQ %d IRQ %d MRQ: %d\n",
@@ -10742,7 +10742,7 @@ lpfc_sli4_enable_msix(struct lpfc_hba *phba)
phba->cfg_irq_chann, vectors);
if (phba->cfg_irq_chann > vectors)
phba->cfg_irq_chann = vectors;
- if (phba->cfg_nvmet_mrq > vectors)
+ if (phba->nvmet_support && (phba->cfg_nvmet_mrq > vectors))
phba->cfg_nvmet_mrq = vectors;
}
@@ -11299,7 +11299,7 @@ lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
!phba->nvme_support) {
phba->nvme_support = 0;
phba->nvmet_support = 0;
- phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_OFF;
+ phba->cfg_nvmet_mrq = 0;
lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_NVME,
"6101 Disabling NVME support: "
"Not supported by firmware: %d %d\n",
diff --git a/drivers/scsi/lpfc/lpfc_nvmet.h b/drivers/scsi/lpfc/lpfc_nvmet.h
index c3ca93d55856..c82212529368 100644
--- a/drivers/scsi/lpfc/lpfc_nvmet.h
+++ b/drivers/scsi/lpfc/lpfc_nvmet.h
@@ -27,7 +27,6 @@
#define LPFC_NVMET_RQE_DEF_COUNT 2048
#define LPFC_NVMET_SUCCESS_LEN 12
-#define LPFC_NVMET_MRQ_OFF 0xffff
#define LPFC_NVMET_MRQ_AUTO 0
#define LPFC_NVMET_MRQ_MAX 16
--
2.16.4