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| author |   James Smart <jsmart2021@gmail.com> | 2018-04-09 14:24:24 -0700 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2018-04-18 19:34:02 -0400 |
| commit | 2448e484259debb1cb8f00a06a8a0a2c6edd9d80 (patch) | |
| tree | 9dc2a741309943f5a5f85352c319d09ea673dac0 /drivers/scsi/lpfc/lpfc_attr.c | |
| parent | scsi: lpfc: Add per io channel NVME IO statistics (diff) | |
| download | linux-dev-2448e484259debb1cb8f00a06a8a0a2c6edd9d80.tar.xz linux-dev-2448e484259debb1cb8f00a06a8a0a2c6edd9d80.zip | |
scsi: lpfc: Enlarge nvmet asynchronous receive buffer counts
Under large io load, the current sizing of asynchronous buffer counts
could be exceeded, indicated by a 2885 log message:
2885 Port Status Event: port status reg 0x81800000, port smphr
reg 0xc000, error 1=0x52004a01, error 2=0x0
Enlarge the async receive queue size. Allow for a configurable number
of buffers to be posted to each RQ, using the new attribute
lpfc_nvmet_mrq_post.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_attr.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_attr.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index 3a6b1be18886..15f921d8ea56 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -3424,6 +3424,15 @@ LPFC_ATTR_R(nvmet_mrq, "Specify number of RQ pairs for processing NVMET cmds"); /* + * lpfc_nvmet_mrq_post: Specify number of RQ buffer to initially post + * to each NVMET RQ. Range 64 to 2048, default is 512. + */ +LPFC_ATTR_R(nvmet_mrq_post, + LPFC_NVMET_RQE_DEF_POST, LPFC_NVMET_RQE_MIN_POST, + LPFC_NVMET_RQE_DEF_COUNT, + "Specify number of RQ buffers to initially post"); + +/* * lpfc_enable_fc4_type: Defines what FC4 types are supported. * Supported Values: 1 - register just FCP * 3 - register both FCP and NVME @@ -5353,6 +5362,7 @@ struct device_attribute *lpfc_hba_attrs[] = { &dev_attr_lpfc_suppress_rsp, &dev_attr_lpfc_nvme_io_channel, &dev_attr_lpfc_nvmet_mrq, + &dev_attr_lpfc_nvmet_mrq_post, &dev_attr_lpfc_nvme_enable_fb, &dev_attr_lpfc_nvmet_fb_size, &dev_attr_lpfc_enable_bg, @@ -6403,6 +6413,7 @@ lpfc_get_cfgparam(struct lpfc_hba *phba) lpfc_enable_fc4_type_init(phba, lpfc_enable_fc4_type); lpfc_nvmet_mrq_init(phba, lpfc_nvmet_mrq); + lpfc_nvmet_mrq_post_init(phba, lpfc_nvmet_mrq_post); /* Initialize first burst. Target vs Initiator are different. */ lpfc_nvme_enable_fb_init(phba, lpfc_nvme_enable_fb); |