linux-kernel - Re: [PATCH net-next] tcp: fix condition for increasing pingpong count

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Message-Id: <20220720064711.16037-1-hlm3280@163.com>
Date:   Wed, 20 Jul 2022 14:47:11 +0800
From:   LemmyHuang <hlm3280@....com>
To:     kuba@...nel.org
Cc:     davem@...emloft.net, dsahern@...nel.org, edumazet@...gle.com,
        hlm3280@....com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, pabeni@...hat.com
Subject: Re: [PATCH net-next] tcp: fix condition for increasing pingpong count

At 2022-07-20 08:49:15, "Jakub Kicinski" <kuba@...nel.org> wrote:
> On Tue, 19 Jul 2022 21:01:37 +0800 LemmyHuang wrote:
>> -	if (before(tp->lsndtime, icsk->icsk_ack.lrcvtime) &&
>> +	if ((tp->lsndtime <= icsk->icsk_ack.lrcvtime) &&
>
> Are you sure you don't need to take care of the values wrapping?
> before() does that. You may want !after() if you want to allow equal.

Yeap, I will switch to that in v2.
Thank you!