Commit f4d01666 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

tcp: remove unnecessary skb_reset_tail_pointer() 



__pskb_trim_head() does not need to reset skb tail pointer.

Also change the comments, __pskb_pull_head() does not exist.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 80b7d819

net/ipv4/tcp_output.c

+2 −4
Original line number Original line Diff line number Diff line
@@ -1328,9 +1328,8 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, 
	return 0;

	return 0;

}

}





/* This is similar to __pskb_pull_head() (it will go to core/skbuff.c

/* This is similar to __pskb_pull_tail(). The difference is that pulled

 * eventually). The difference is that pulled data not copied, but

 * data is not copied, but immediately discarded.

 * immediately discarded.

 */

 */

static int __pskb_trim_head(struct sk_buff *skb, int len)

static int __pskb_trim_head(struct sk_buff *skb, int len)

{

{
@@ -1365,7 +1364,6 @@ static int __pskb_trim_head(struct sk_buff *skb, int len) 
	}

	}

	shinfo->nr_frags = k;

	shinfo->nr_frags = k;





	skb_reset_tail_pointer(skb);

	skb->data_len -= len;

	skb->data_len -= len;

	skb->len = skb->data_len;

	skb->len = skb->data_len;

	return len;

	return len;