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net: hns3: fix for skb leak when doing selftest 

If hns3_nic_net_xmit does not return NETDEV_TX_BUSY when doing
a loopback selftest, the skb is not freed in hns3_clean_tx_ring
or hns3_nic_net_xmit, which causes skb not freed problem.

This patch fixes it by freeing skb when hns3_nic_net_xmit does
not return NETDEV_TX_OK.

Fixes: c39c4d98dc ("net: hns3: Add mac loopback selftest support in hns3 driver")

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yunsheng Lin 2019-06-13 17:12:30 +08:00 committed by David S. Miller
parent 757188005f
commit 8f9eed1a87
1 changed files with 4 additions and 2 deletions
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6
drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
View File

@ -250,11 +250,13 @@ static int hns3_lp_run_test(struct net_device *ndev, enum hnae3_loop mode)
skb_get(skb);
tx_ret = hns3_nic_net_xmit(skb, ndev);
if (tx_ret == NETDEV_TX_OK)
if (tx_ret == NETDEV_TX_OK) {
good_cnt++;
else
} else {
kfree_skb(skb);
netdev_err(ndev, "hns3_lb_run_test xmit failed: %d\n",
tx_ret);
}
}
if (good_cnt != HNS3_NIC_LB_TEST_PKT_NUM) {
ret_val = HNS3_NIC_LB_TEST_TX_CNT_ERR;