[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>

parent a5647696

net/ipv4/tcp_input.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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;