Commit 70b7ff13 authored Jul 10, 2018 by Stefan Baranoff Committed by David S. Miller Jul 12, 2018

tcp: allow user to create repair socket without window probes



Under rare conditions where repair code may be used it is possible that
window probes are either unnecessary or undesired. If the user knows that
window probes are not wanted or needed this change allows them to skip
sending them when a socket comes out of repair.

Signed-off-by: Stefan Baranoff <sbaranoff@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 21684dc4

net/ipv4/tcp.c

+5 −3

Original line number	Diff line number	Diff line
		@@ -2823,13 +2823,15 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
		case TCP_REPAIR:
		if (!tcp_can_repair_sock(sk))
		err = -EPERM;
		else if (val == 1) {
		tp->repair = 1;
		/* 1 for normal repair, 2 for no window probes */
		else if (val == 1 \|\| val == 2) {
		tp->repair = val;
		sk->sk_reuse = SK_FORCE_REUSE;
		tp->repair_queue = TCP_NO_QUEUE;
		} else if (val == 0) {
		tp->repair = 0;
		sk->sk_reuse = SK_NO_REUSE;
		if (tp->repair == 1)
		tcp_send_window_probe(sk);
		} else
		err = -EINVAL;