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| author |   James Smart <jsmart2021@gmail.com> | 2017-04-21 16:05:01 -0700 |
|---|---|---|
| committer |   Christoph Hellwig <hch@lst.de> | 2017-04-24 09:25:49 +0200 |
| commit | 4d4c4a4ac756e7a0198259a49eeaf0d4a0e9a4fb (patch) | |
| tree | b82435fd8cf61fb069c8b9971a171064c059624e /drivers/scsi/lpfc/lpfc.h | |
| parent | Fix crash after issuing lip reset (diff) | |
| download | linux-dev-4d4c4a4ac756e7a0198259a49eeaf0d4a0e9a4fb.tar.xz linux-dev-4d4c4a4ac756e7a0198259a49eeaf0d4a0e9a4fb.zip | |
Fix max_sgl_segments settings for NVME / NVMET
Cannot set NVME segment counts to a large number
The existing module parameter lpfc_sg_seg_cnt is used for both
SCSI and NVME.
Limit the module parameter lpfc_sg_seg_cnt to 128 with the
default being 64 for both NVME and NVMET, assuming NVME is enabled in the
driver for that port. The driver will set max_sgl_segments in the
NVME/NVMET template to lpfc_sg_seg_cnt + 1.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index 257bbdd0f0b8..0fc145092e9b 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -56,7 +56,7 @@ struct lpfc_sli2_slim; #define LPFC_MAX_SG_SEG_CNT 4096 /* sg element count per scsi cmnd */ #define LPFC_MAX_SGL_SEG_CNT 512 /* SGL element count per scsi cmnd */ #define LPFC_MAX_BPL_SEG_CNT 4096 /* BPL element count per scsi cmnd */ -#define LPFC_MIN_NVME_SEG_CNT 254 +#define LPFC_MAX_NVME_SEG_CNT 128 /* max SGL element cnt per NVME cmnd */ #define LPFC_MAX_SGE_SIZE 0x80000000 /* Maximum data allowed in a SGE */ #define LPFC_IOCB_LIST_CNT 2250 /* list of IOCBs for fast-path usage. */ @@ -781,6 +781,7 @@ struct lpfc_hba { uint32_t cfg_nvmet_fb_size; uint32_t cfg_total_seg_cnt; uint32_t cfg_sg_seg_cnt; + uint32_t cfg_nvme_seg_cnt; uint32_t cfg_sg_dma_buf_size; uint64_t cfg_soft_wwnn; uint64_t cfg_soft_wwpn; |