From: Kuniyuki Iwashima <kuniyu@amazon.com>
To: <edumazet@google.com>
Cc: <davem@davemloft.net>, <eric.dumazet@gmail.com>,
<horms@kernel.org>, <kernelxing@tencent.com>, <kuba@kernel.org>,
<kuniyu@amazon.com>, <ncardwell@google.com>,
<netdev@vger.kernel.org>, <pabeni@redhat.com>
Subject: Re: [PATCH net-next 4/5] tcp: add the ability to control max RTO
Date: Mon, 10 Feb 2025 09:43:46 +0900 [thread overview]
Message-ID: <20250210004346.50931-1-kuniyu@amazon.com> (raw)
In-Reply-To: <20250207152830.2527578-5-edumazet@google.com>
From: Eric Dumazet <edumazet@google.com>
Date: Fri, 7 Feb 2025 15:28:29 +0000
> Currently, TCP stack uses a constant (120 seconds)
> to limit the RTO value exponential growth.
>
> Some applications want to set a lower value.
>
> Add TCP_RTO_MAX_MS socket option to set a value (in ms)
> between 1 and 120 seconds.
>
> It is discouraged to change the socket rto max on a live
> socket, as it might lead to unexpected disconnects.
>
> Following patch is adding a netns sysctl to control the
> default value at socket creation time.
>
> Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
next prev parent reply other threads:[~2025-02-10 0:44 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-07 15:28 [PATCH net-next 0/5] tcp: allow to reduce max RTO Eric Dumazet
2025-02-07 15:28 ` [PATCH net-next 1/5] tcp: remove tcp_reset_xmit_timer() @max_when argument Eric Dumazet
2025-02-08 5:29 ` Jason Xing
2025-02-08 23:46 ` Neal Cardwell
2025-02-10 0:30 ` Kuniyuki Iwashima
2025-02-07 15:28 ` [PATCH net-next 2/5] tcp: add a @pace_delay parameter to tcp_reset_xmit_timer() Eric Dumazet
2025-02-08 5:31 ` Jason Xing
2025-02-08 23:46 ` Neal Cardwell
2025-02-10 0:32 ` Kuniyuki Iwashima
2025-02-07 15:28 ` [PATCH net-next 3/5] tcp: use tcp_reset_xmit_timer() Eric Dumazet
2025-02-08 5:32 ` Jason Xing
2025-02-08 23:47 ` Neal Cardwell
2025-02-10 0:36 ` Kuniyuki Iwashima
2025-02-07 15:28 ` [PATCH net-next 4/5] tcp: add the ability to control max RTO Eric Dumazet
2025-02-08 5:36 ` Jason Xing
2025-02-08 23:47 ` Neal Cardwell
2025-02-10 8:18 ` Eric Dumazet
2025-02-10 8:28 ` Jason Xing
2025-02-10 0:43 ` Kuniyuki Iwashima [this message]
2025-02-07 15:28 ` [PATCH net-next 5/5] tcp: add tcp_rto_max_ms sysctl Eric Dumazet
2025-02-08 5:45 ` Jason Xing
2025-02-08 23:48 ` Neal Cardwell
2025-02-10 0:46 ` Kuniyuki Iwashima
2025-02-11 12:30 ` [PATCH net-next 0/5] tcp: allow to reduce max RTO patchwork-bot+netdevbpf
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