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[TCP]: Do not call tcp_tso_acked() if no work to do. 

In tcp_clean_rtx_queue(), if the TSO packet is not even partially
acked, do not waste time calling tcp_tso_acked().

Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
David S. Miller 2005-07-05 15:20:55 -07:00
parent a56476962e
commit cb83199a29
1 changed files with 2 additions and 1 deletions
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3
net/ipv4/tcp_input.c
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@ -2038,7 +2038,8 @@ static int tcp_clean_rtx_queue(struct sock *sk, __s32 *seq_rtt_p, s32 *seq_usrtt
* the other end.
*/
if (after(scb->end_seq, tp->snd_una)) {
if (tcp_skb_pcount(skb) > 1)
if (tcp_skb_pcount(skb) > 1 &&
after(tp->snd_una, scb->seq))
acked |= tcp_tso_acked(sk, skb,
now, &seq_rtt);
break;