diff options
| -rw-r--r-- | drivers/scsi/fcoe/fcoe.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index e32a0ed266a..a39d370bccf 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -49,6 +49,12 @@ MODULE_AUTHOR("Open-FCoE.org"); MODULE_DESCRIPTION("FCoE"); MODULE_LICENSE("GPL v2"); +/* Performance tuning parameters for fcoe */ +static unsigned int fcoe_ddp_min; +module_param_named(ddp_min, fcoe_ddp_min, uint, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(ddp_min, "Minimum I/O size in bytes for " \ + "Direct Data Placement (DDP)."); + /* fcoe host list */ LIST_HEAD(fcoe_hostlist); DEFINE_RWLOCK(fcoe_hostlist_lock); @@ -414,7 +420,8 @@ static int fcoe_shost_config(struct fc_lport *lp, struct Scsi_Host *shost, */ bool fcoe_oem_match(struct fc_frame *fp) { - return fc_fcp_is_read(fr_fsp(fp)); + return fc_fcp_is_read(fr_fsp(fp)) && + (fr_fsp(fp)->data_len > fcoe_ddp_min); } /** |