diff options
| author | Eric Dumazet <edumazet@google.com> | 2025-02-07 15:28:30 +0000 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-02-11 13:08:00 +0100 |
| commit | 1280c26228bd7eb14bdecd67dedbdd871f8fdda5 (patch) | |
| tree | a30101f515f68abb751a449a79570c0458059f11 /net/ipv4/tcp_ipv4.c | |
| parent | 54a378f43425085d0684679d99735696b69165bc (diff) | |
tcp: add tcp_rto_max_ms sysctl
Previous patch added a TCP_RTO_MAX_MS socket option
to tune a TCP socket max RTO value.
Many setups prefer to change a per netns sysctl.
This patch adds /proc/sys/net/ipv4/tcp_rto_max_ms
Its initial value is 120000 (120 seconds).
Keep in mind that a decrease of tcp_rto_max_ms
means shorter overall timeouts, unless tcp_retries2
sysctl is increased.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 06fb0123d2d6..d1fd2128ac6c 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -3532,6 +3532,7 @@ static int __net_init tcp_sk_init(struct net *net) net->ipv4.sysctl_tcp_pingpong_thresh = 1; net->ipv4.sysctl_tcp_rto_min_us = jiffies_to_usecs(TCP_RTO_MIN); + net->ipv4.sysctl_tcp_rto_max_ms = TCP_RTO_MAX_SEC * MSEC_PER_SEC; return 0; } |