Subject: [PATCH] fix limited slow start bug

From: John Heffner <[email-masked]>
Date: Thu, 22 Feb 2007 13:56:22 -0500

Fix arithmetic order bug in limited slow start.  The subtraction needs to be
done before snd_cwnd is incremented.

Signed-off-by: John Heffner <[email-masked]>

---
commit 244e7411d99443df7b7ae849ba6ebbec4c2342bc
tree e6d5985a22448f59f8bef393542e1d5497ee5684
parent 97033fa201705e6cfc68ce66f34ede3277c3d645
author John Heffner <[email-masked]> Thu, 22 Feb 2007 13:54:01 -0500
committer John Heffner <[email-masked]> Thu, 22 Feb 2007 13:54:01 -0500

 net/ipv4/tcp_cong.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c
index 7fd2910..a0c894f 100644
--- a/net/ipv4/tcp_cong.c
+++ b/net/ipv4/tcp_cong.c
@@ -303,9 +303,9 @@ void tcp_slow_start(struct tcp_sock *tp)
 	
 	tp->snd_cwnd_cnt += cnt;
 	while (tp->snd_cwnd_cnt >= tp->snd_cwnd) {
+		tp->snd_cwnd_cnt -= tp->snd_cwnd;
 		if (tp->snd_cwnd < tp->snd_cwnd_clamp)
 			tp->snd_cwnd++;
-		tp->snd_cwnd_cnt -= tp->snd_cwnd;
 	}
 }
 EXPORT_SYMBOL_GPL(tcp_slow_start);