netdev - Re: [PATCH net] sctp: update hb timer immediately after users change hb

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Message-ID: <ZRv3PgGCa5v0woGh@kernel.org>
Date: Tue, 3 Oct 2023 13:13:02 +0200
From: Simon Horman <horms@...nel.org>
To: Xin Long <lucien.xin@...il.com>
Cc: network dev <netdev@...r.kernel.org>, linux-sctp@...r.kernel.org,
	davem@...emloft.net, kuba@...nel.org,
	Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>,
	Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
	Xufeng Zhang <xufeng.zhang@...driver.com>
Subject: Re: [PATCH net] sctp: update hb timer immediately after users change
 hb_interval

On Sun, Oct 01, 2023 at 11:04:20AM -0400, Xin Long wrote:
> Currently, when hb_interval is changed by users, it won't take effect
> until the next expiry of hb timer. As the default value is 30s, users
> have to wait up to 30s to wait its hb_interval update to work.
> 
> This becomes pretty bad in containers where a much smaller value is
> usually set on hb_interval. This patch improves it by resetting the
> hb timer immediately once the value of hb_interval is updated by users.
> 
> Note that we don't address the already existing 'problem' when sending
> a heartbeat 'on demand' if one hb has just been sent(from the timer)
> mentioned in:
> 
>   https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg590224.html

Hi Xin Long,

I wonder if this warrants a fixes tag, and if so, perhaps:

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")

> Signed-off-by: Xin Long <lucien.xin@...il.com>

Reviewed-by: Simon Horman <horms@...nel.org>