From f086edef71be7174a16c1ed67ac65a085cda28b1 Mon Sep 17 00:00:00 2001 From: Kevin Yang Date: Mon, 3 Jun 2024 21:30:54 +0000 Subject: tcp: add sysctl_tcp_rto_min_us Adding a sysctl knob to allow user to specify a default rto_min at socket init time, other than using the hard coded 200ms default rto_min. Note that the rto_min route option has the highest precedence for configuring this setting, followed by the TCP_BPF_RTO_MIN socket option, followed by the tcp_rto_min_us sysctl. Signed-off-by: Kevin Yang Reviewed-by: Neal Cardwell Reviewed-by: Yuchung Cheng Reviewed-by: Eric Dumazet Reviewed-by: Tony Lu Reviewed-by: Jakub Kicinski Signed-off-by: David S. Miller --- net/ipv4/tcp_ipv4.c | 1 + 1 file changed, 1 insertion(+) (limited to 'net/ipv4/tcp_ipv4.c') diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 3ef4b274c24b..3613e08ca794 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -3502,6 +3502,7 @@ static int __net_init tcp_sk_init(struct net *net) net->ipv4.sysctl_tcp_shrink_window = 0; net->ipv4.sysctl_tcp_pingpong_thresh = 1; + net->ipv4.sysctl_tcp_rto_min_us = jiffies_to_usecs(TCP_RTO_MIN); return 0; } -- cgit v1.2.3