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

From: Jakub Kicinski <[email-masked]>
Date: Tue, 19 Jul 2022 17:49:15 -0700

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.