Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
[TCP]: Fixes IW > 2 cases when TCP is application limited
Whenever a transfer is application limited, we are allowed at least
initial window worth of data per window unless cwnd is previously
less than that.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
authored by Ilpo Järvinen and committed by David S. Miller d254bcdb c4c0ce5c
+2
-1
net/ipv4/tcp_input.c
+2
-1
net/ipv4/tcp_input.c
···
3541
3541
if (inet_csk(sk)->icsk_ca_state == TCP_CA_Open &&
3542
3542
sk->sk_socket && !test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
3543
3543
/* Limited by application or receiver window. */
3544
-
u32 win_used = max(tp->snd_cwnd_used, 2U);
3544
+
u32 init_win = tcp_init_cwnd(tp, __sk_dst_get(sk));
3545
+
u32 win_used = max(tp->snd_cwnd_used, init_win);
3545
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if (win_used < tp->snd_cwnd) {
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tp->snd_ssthresh = tcp_current_ssthresh(sk);
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tp->snd_cwnd = (tp->snd_cwnd + win_used) >> 1;