From 15986e1aadbbf40a331cddd0470bb434d156431d Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 25 May 2006 16:11:14 -0700 Subject: [PATCH] [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: David S. Miller --- net/ipv4/tcp_input.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index c6d62f0a99..6d167889a4 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -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. */ -- 2.39.5