From d94ce42d94eb15d47edcbc048c4403202d2a6f49 Mon Sep 17 00:00:00 2001 From: Danny Lin Date: Tue, 26 May 2020 23:26:26 -0700 Subject: [PATCH] tcp: Enable ECN negotiation by default This is now the default for all connections in iOS 11+, and we have fallback to detect and disable ECN for broken flows. Signed-off-by: Danny Lin Signed-off-by: azrim --- net/ipv4/tcp_ipv4.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index bab5feae896f..e8b8fdb1863b 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -2488,7 +2488,7 @@ static int __net_init tcp_sk_init(struct net *net) *per_cpu_ptr(net->ipv4.tcp_sk, cpu) = sk; } - net->ipv4.sysctl_tcp_ecn = 2; + net->ipv4.sysctl_tcp_ecn = 1; net->ipv4.sysctl_tcp_ecn_fallback = 1; net->ipv4.sysctl_tcp_base_mss = TCP_BASE_MSS;