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net: eliminate meaningless memcpy to data in pskb_carve_inside_nonlinear()

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The frags of skb_shared_info of the data is assigned in following loop. It
is meaningless to do a memcpy of frags here.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Miaohe Lin
2020-08-15 04:48:53 -04:00
committed by David S. Miller
parent 46191546d0
commit e3ec1e8ca0
1 changed files with 1 additions and 2 deletions
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3
net/core/skbuff.c
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@@ -5953,8 +5953,7 @@ static int pskb_carve_inside_nonlinear(struct sk_buff *skb, const u32 off,
size = SKB_WITH_OVERHEAD(ksize(data)); size = SKB_WITH_OVERHEAD(ksize(data));
memcpy((struct skb_shared_info *)(data + size), memcpy((struct skb_shared_info *)(data + size),
skb_shinfo(skb), offsetof(struct skb_shared_info, skb_shinfo(skb), offsetof(struct skb_shared_info, frags[0]));
frags[skb_shinfo(skb)->nr_frags]));
if (skb_orphan_frags(skb, gfp_mask)) { if (skb_orphan_frags(skb, gfp_mask)) {
kfree(data); kfree(data);
return -ENOMEM; return -ENOMEM;