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Commit 15986e1a authored by David S. Miller's avatar David S. Miller Committed by David S. Miller
Browse files

[TCP]: tcp_rcv_rtt_measure_ts() call in pure-ACK path is superfluous 



We only want to take receive RTT mesaurements for data
bearing frames, here in the header prediction fast path
for a pure-sender, we know that we have a pure-ACK and
thus the checks in tcp_rcv_rtt_mesaure_ts() will not pass.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 11dc1f36

net/ipv4/tcp_input.c

+0 −2
Original line number Diff line number Diff line
@@ -3931,8 +3931,6 @@ int tcp_rcv_established(struct sock *sk, struct sk_buff *skb, 
				    tp->rcv_nxt == tp->rcv_wup)

					tcp_store_ts_recent(tp);



				tcp_rcv_rtt_measure_ts(sk, skb);



				/* We know that such packets are checksummed

				 * on entry.

				 */