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tcp: remove dead code from tcp_collapse_retrans()

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TCP sendmsg() no longer puts payload in skb->head,
remove some dead code from tcp_collapse_retrans().

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2021-10-27 13:19:19 -07:00 committed by David S. Miller
parent 27728ba80f
commit bd44631471
1 changed files with 3 additions and 7 deletions
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10
net/ipv4/tcp_output.c
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@ -3045,13 +3045,9 @@ static bool tcp_collapse_retrans(struct sock *sk, struct sk_buff *skb)
BUG_ON(tcp_skb_pcount(skb) != 1 || tcp_skb_pcount(next_skb) != 1);
if (next_skb_size) {
if (next_skb_size <= skb_availroom(skb))
skb_copy_bits(next_skb, 0, skb_put(skb, next_skb_size),
next_skb_size);
else if (!tcp_skb_shift(skb, next_skb, 1, next_skb_size))
return false;
}
if (next_skb_size && !tcp_skb_shift(skb, next_skb, 1, next_skb_size))
return false;
tcp_highest_sack_replace(sk, next_skb, skb);
/* Update sequence range on original skb. */