From 06a59ecb921de1d44efcf2cdf543bc689fe2e0d8 Mon Sep 17 00:00:00 2001
From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 13 Oct 2011 18:24:42 +0000
Subject: [PATCH] tcp: use TCP_INIT_CWND in tcp_fixup_sndbuf()
Initial cwnd being 10 (TCP_INIT_CWND) instead of 3, change
tcp_fixup_sndbuf() to get more than 16384 bytes (sysctl_tcp_wmem[1]) in
initial sk_sndbuf
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/ipv4/tcp_input.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index c1653fe47255..1e848b26c2b9 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -267,11 +267,9 @@ static void tcp_fixup_sndbuf(struct sock *sk)
{
int sndmem = SKB_TRUESIZE(tcp_sk(sk)->rx_opt.mss_clamp + MAX_TCP_HEADER);
- if (sk->sk_sndbuf < 3 * sndmem) {
- sk->sk_sndbuf = 3 * sndmem;
- if (sk->sk_sndbuf > sysctl_tcp_wmem[2])
- sk->sk_sndbuf = sysctl_tcp_wmem[2];
- }
+ sndmem *= TCP_INIT_CWND;
+ if (sk->sk_sndbuf < sndmem)
+ sk->sk_sndbuf = min(sndmem, sysctl_tcp_wmem[2]);
}
/* 2. Tuning advertised window (window_clamp, rcv_ssthresh)
--
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