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net: hns3: Add unlikely for buf_num check

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This patch adds unlikely for buf_num check.

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:
Peng Li 2018-09-19 18:29:48 +01:00 committed by David S. Miller
parent 874bff0ba6
commit 932d1252ad
1 changed files with 1 additions and 1 deletions
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drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
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@ -1074,7 +1074,7 @@ static int hns3_nic_maybe_stop_tx(struct sk_buff **out_skb, int *bnum,
/* No. of segments (plus a header) */
buf_num = skb_shinfo(skb)->nr_frags + 1;
if (buf_num > ring_space(ring))
if (unlikely(ring_space(ring) < buf_num))
return -EBUSY;
*bnum = buf_num;