[PATCH net-next 01/12] net: hns3: Fix ets validate issue
From: Salil Mehta <hidden>
Date: 2018-09-21 15:43:00
Also in:
lkml
Subsystem:
hisilicon network subsystem 3 driver (hns3), hisilicon network subsystem driver, networking drivers, the rest · Maintainers:
Jian Shen, Jijie Shao, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Jian Shen <shenjian15@huawei.com>
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: cacde272dd00 ("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 <redacted>
Signed-off-by: Salil Mehta <redacted>
---
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
index f08ebb7..92f1938 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c@@ -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;
--
2.7.4