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net: hns3: Fix ets validate issue 

There is a defect in hclge_ets_validate(). If each member of tc_tsa is
not IEEE_8021QAZ_TSA_ETS, the variable total_ets_bw won't be updated.
In this case, the check for value of total_ets_bw will fail. This patch
fixes it by checking total_ets_bw only after it has been updated.

Fixes: cacde272dd ("net: hns3: Add hclge_dcb module for the support of DCB feature")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@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:
Jian Shen 2018-09-21 16:41:37 +01:00 committed by David S. Miller
parent b1589924c0
commit adefc0a2ff
1 changed files with 4 additions and 2 deletions
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6
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
View File

@ -73,6 +73,7 @@ static int hclge_ieee_getets(struct hnae3_handle *h, struct ieee_ets *ets)
static int hclge_ets_validate(struct hclge_dev *hdev, struct ieee_ets *ets,
u8 *tc, bool *changed)
{
bool has_ets_tc = false;
u32 total_ets_bw = 0;
u8 max_tc = 0;
u8 i;
@ -100,13 +101,14 @@ static int hclge_ets_validate(struct hclge_dev *hdev, struct ieee_ets *ets,
*changed = true;
total_ets_bw += ets->tc_tx_bw[i];
break;
has_ets_tc = true;
break;
default:
return -EINVAL;
}
}
if (total_ets_bw != BW_PERCENT)
if (has_ets_tc && total_ets_bw != BW_PERCENT)
return -EINVAL;
*tc = max_tc + 1;