- Reduce the sg_tablesize to 255. - Reduce the MAX BDs firmware can handle to 255. - Return IO to ML if BD goes more then 255 after split. - Correct the size of each BD split to 0xffff.
Signed-off-by: Saurav Kashyap <[email protected]> --- drivers/scsi/bnx2fc/bnx2fc.h | 5 +++-- drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 3 ++- drivers/scsi/bnx2fc/bnx2fc_io.c | 11 +++++++++++ 3 files changed, 16 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/bnx2fc/bnx2fc.h b/drivers/scsi/bnx2fc/bnx2fc.h index 14cc692..170abe9 100644 --- a/drivers/scsi/bnx2fc/bnx2fc.h +++ b/drivers/scsi/bnx2fc/bnx2fc.h @@ -75,8 +75,9 @@ #define BNX2X_DOORBELL_PCI_BAR 2 #define BNX2FC_MAX_BD_LEN 0xffff -#define BNX2FC_BD_SPLIT_SZ 0x8000 -#define BNX2FC_MAX_BDS_PER_CMD 256 +#define BNX2FC_BD_SPLIT_SZ 0xffff +#define BNX2FC_MAX_BDS_PER_CMD 255 +#define BNX2FC_FW_MAX_BDS_PER_CMD 255 #define BNX2FC_SQ_WQES_MAX 256 diff --git a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c index a75e74a..7796799 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c +++ b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c @@ -2971,7 +2971,8 @@ static struct scsi_host_template bnx2fc_shost_template = { .this_id = -1, .cmd_per_lun = 3, .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, - .max_sectors = 1024, + .dma_boundary = 0x7fff, + .max_sectors = 0x3fbf, .track_queue_depth = 1, .slave_configure = bnx2fc_slave_configure, .shost_attrs = bnx2fc_host_attrs, diff --git a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c index d7eb5e1..ff0c696 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_io.c +++ b/drivers/scsi/bnx2fc/bnx2fc_io.c @@ -1660,6 +1660,7 @@ static int bnx2fc_map_sg(struct bnx2fc_cmd *io_req) u64 addr; int i; + WARN_ON(scsi_sg_count(sc) > BNX2FC_MAX_BDS_PER_CMD); /* * Use dma_map_sg directly to ensure we're using the correct * dev struct off of pcidev. @@ -1707,6 +1708,16 @@ static int bnx2fc_build_bd_list_from_sg(struct bnx2fc_cmd *io_req) } io_req->bd_tbl->bd_valid = bd_count; + /* + * Return the command to ML if BD count increase the max number + * that can be handled by FW. + */ + if (bd_count > BNX2FC_FW_MAX_BDS_PER_CMD) { + pr_err("bd_count = %d increased FW supported max BD(255), task_id = 0x%x\n", + bd_count, io_req->xid); + return -ENOMEM; + } + return 0; } -- 1.8.3.1
