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Commit 06a59ecb authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

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: default avatarEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent fddf86fc

net/ipv4/tcp_input.c

+3 −5
Original line number Diff line number Diff line
@@ -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)