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[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 <davem@davemloft.net>
wifi-calibration
David S. Miller 2006-05-25 16:11:14 -07:00 committed by David S. Miller
parent 11dc1f36a6
commit 15986e1aad
1 changed files with 0 additions and 2 deletions
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2
net/ipv4/tcp_input.c
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@ -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.
*/