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tcp: use TCP_INIT_CWND in tcp_fixup_sndbuf()

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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>
This commit is contained in:
Eric Dumazet 2011-10-13 18:24:42 +00:00 committed by David S. Miller
parent fddf86fc46
commit 06a59ecb92
1 changed files with 3 additions and 5 deletions
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8
net/ipv4/tcp_input.c
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@ -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); int sndmem = SKB_TRUESIZE(tcp_sk(sk)->rx_opt.mss_clamp + MAX_TCP_HEADER);
if (sk->sk_sndbuf < 3 * sndmem) { sndmem *= TCP_INIT_CWND;
sk->sk_sndbuf = 3 * sndmem; if (sk->sk_sndbuf < sndmem)
if (sk->sk_sndbuf > sysctl_tcp_wmem[2]) sk->sk_sndbuf = min(sndmem, sysctl_tcp_wmem[2]);
sk->sk_sndbuf = sysctl_tcp_wmem[2];
}
} }
/* 2. Tuning advertised window (window_clamp, rcv_ssthresh) /* 2. Tuning advertised window (window_clamp, rcv_ssthresh)