Commit 041a14d2 authored by Yuchung Cheng's avatar Yuchung Cheng Committed by David S. Miller

tcp: start receiver buffer autotuning sooner

Previously receiver buffer auto-tuning starts after receiving
one advertised window amount of data. After the initial receiver
buffer was raised by patch a337531b ("tcp: up initial rmem to
128KB and SYN rwin to around 64KB"), the reciver buffer may take
too long to start raising. To address this issue, this patch lowers
the initial bytes expected to receive roughly the expected sender's
initial window.

Fixes: a337531b ("tcp: up initial rmem to 128KB and SYN rwin to around 64KB")
Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
Signed-off-by: default avatarWei Wang <weiwan@google.com>
Signed-off-by: default avatarNeal Cardwell <ncardwell@google.com>
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Reviewed-by: default avatarSoheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d96112b2
...@@ -438,7 +438,7 @@ void tcp_init_buffer_space(struct sock *sk) ...@@ -438,7 +438,7 @@ void tcp_init_buffer_space(struct sock *sk)
if (!(sk->sk_userlocks & SOCK_SNDBUF_LOCK)) if (!(sk->sk_userlocks & SOCK_SNDBUF_LOCK))
tcp_sndbuf_expand(sk); tcp_sndbuf_expand(sk);
tp->rcvq_space.space = tp->rcv_wnd; tp->rcvq_space.space = min_t(u32, tp->rcv_wnd, TCP_INIT_CWND * tp->advmss);
tcp_mstamp_refresh(tp); tcp_mstamp_refresh(tp);
tp->rcvq_space.time = tp->tcp_mstamp; tp->rcvq_space.time = tp->tcp_mstamp;
tp->rcvq_space.seq = tp->copied_seq; tp->rcvq_space.seq = tp->copied_seq;
......
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