From 41834b7332a1ad3f7b6e8bbd83e6ce63586f0b07 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= <ilpo.jarvinen@helsinki.fi>
Date: Fri, 5 Dec 2008 22:43:26 -0800
Subject: tcp: share code through function, not through copy-paste. :-)
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Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 215e38c..99b7ecb 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -3052,6 +3052,13 @@ static void tcp_fastretrans_alert(struct sock *sk, int pkts_acked, int flag)
 	tcp_xmit_retransmit_queue(sk);
 }
 
+static void tcp_valid_rtt_meas(struct sock *sk, u32 seq_rtt)
+{
+	tcp_rtt_estimator(sk, seq_rtt);
+	tcp_set_rto(sk);
+	inet_csk(sk)->icsk_backoff = 0;
+}
+
 /* Read draft-ietf-tcplw-high-performance before mucking
  * with this code. (Supersedes RFC1323)
  */
@@ -3073,10 +3080,8 @@ static void tcp_ack_saw_tstamp(struct sock *sk, int flag)
 	 * in window is lost... Voila.	 			--ANK (010210)
 	 */
 	struct tcp_sock *tp = tcp_sk(sk);
-	const __u32 seq_rtt = tcp_time_stamp - tp->rx_opt.rcv_tsecr;
-	tcp_rtt_estimator(sk, seq_rtt);
-	tcp_set_rto(sk);
-	inet_csk(sk)->icsk_backoff = 0;
+
+	tcp_valid_rtt_meas(sk, tcp_time_stamp - tp->rx_opt.rcv_tsecr);
 }
 
 static void tcp_ack_no_tstamp(struct sock *sk, u32 seq_rtt, int flag)
@@ -3093,9 +3098,7 @@ static void tcp_ack_no_tstamp(struct sock *sk, u32 seq_rtt, int flag)
 	if (flag & FLAG_RETRANS_DATA_ACKED)
 		return;
 
-	tcp_rtt_estimator(sk, seq_rtt);
-	tcp_set_rto(sk);
-	inet_csk(sk)->icsk_backoff = 0;
+	tcp_valid_rtt_meas(sk, seq_rtt);
 }
 
 static inline void tcp_ack_update_rtt(struct sock *sk, const int flag,
-- 
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