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tcp: extract code to compute SYNACK RTT

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In preparation for adding another spot where we compute the SYNACK
RTT, extract this code so that it can be shared.

Signed-off-by: Neal Cardwell <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Neal Cardwell 2012-09-22 04:18:54 +00:00 • committed by David S. Miller
commit 623df484a7
3 changed files with 11 additions and 6 deletions
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4
net/ipv4/tcp_ipv4.c
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@ -1733,9 +1733,7 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
newtp->advmss = tcp_sk(sk)->rx_opt.user_mss;
tcp_initialize_rcv_mss(newsk);
if (tcp_rsk(req)->snt_synack)
tcp_valid_rtt_meas(newsk,
tcp_time_stamp - tcp_rsk(req)->snt_synack);
tcp_synack_rtt_meas(newsk, req);
newtp->total_retrans = req->retrans;
#ifdef CONFIG_TCP_MD5SIG