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net: hns: Adjust the SBM module buffer threshold 

HNS needs SMB Buffers to store at least two packets after sending
pause frame because of the link delay. The MTU of HNS is 9728. As
the processor user manual described, the SBM buffer threshold should
be modified.

Reported-by: Ping Zhang <zhangping5@huawei.com>
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Reviewed-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kejian Yan 2017-04-01 12:03:46 +01:00 committed by David S. Miller
parent a2185587ad
commit 76b588bc52
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
View File

@ -510,10 +510,10 @@ static void hns_dsafv2_sbm_bp_wl_cfg(struct dsaf_device *dsaf_dev)
o_sbm_bp_cfg = dsaf_read_dev(dsaf_dev, reg); o_sbm_bp_cfg = dsaf_read_dev(dsaf_dev, reg);
dsaf_set_field(o_sbm_bp_cfg, dsaf_set_field(o_sbm_bp_cfg,
DSAFV2_SBM_CFG3_SET_BUF_NUM_NO_PFC_M, DSAFV2_SBM_CFG3_SET_BUF_NUM_NO_PFC_M,
DSAFV2_SBM_CFG3_SET_BUF_NUM_NO_PFC_S, 48); DSAFV2_SBM_CFG3_SET_BUF_NUM_NO_PFC_S, 55);
dsaf_set_field(o_sbm_bp_cfg, dsaf_set_field(o_sbm_bp_cfg,
DSAFV2_SBM_CFG3_RESET_BUF_NUM_NO_PFC_M, DSAFV2_SBM_CFG3_RESET_BUF_NUM_NO_PFC_M,
DSAFV2_SBM_CFG3_RESET_BUF_NUM_NO_PFC_S, 80); DSAFV2_SBM_CFG3_RESET_BUF_NUM_NO_PFC_S, 110);
dsaf_write_dev(dsaf_dev, reg, o_sbm_bp_cfg); dsaf_write_dev(dsaf_dev, reg, o_sbm_bp_cfg);
/* for no enable pfc mode */ /* for no enable pfc mode */
@ -521,10 +521,10 @@ static void hns_dsafv2_sbm_bp_wl_cfg(struct dsaf_device *dsaf_dev)
o_sbm_bp_cfg = dsaf_read_dev(dsaf_dev, reg); o_sbm_bp_cfg = dsaf_read_dev(dsaf_dev, reg);
dsaf_set_field(o_sbm_bp_cfg, dsaf_set_field(o_sbm_bp_cfg,
DSAFV2_SBM_CFG4_SET_BUF_NUM_NO_PFC_M, DSAFV2_SBM_CFG4_SET_BUF_NUM_NO_PFC_M,
DSAFV2_SBM_CFG4_SET_BUF_NUM_NO_PFC_S, 192); DSAFV2_SBM_CFG4_SET_BUF_NUM_NO_PFC_S, 128);
dsaf_set_field(o_sbm_bp_cfg, dsaf_set_field(o_sbm_bp_cfg,
DSAFV2_SBM_CFG4_RESET_BUF_NUM_NO_PFC_M, DSAFV2_SBM_CFG4_RESET_BUF_NUM_NO_PFC_M,
DSAFV2_SBM_CFG4_RESET_BUF_NUM_NO_PFC_S, 240); DSAFV2_SBM_CFG4_RESET_BUF_NUM_NO_PFC_S, 192);
dsaf_write_dev(dsaf_dev, reg, o_sbm_bp_cfg); dsaf_write_dev(dsaf_dev, reg, o_sbm_bp_cfg);
} }