netdev - Re: [PATCH net-next] net: Return user_mss for TCP

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Date: Tue, 23 May 2023 12:28:30 +0200
From: Paolo Abeni <pabeni@...hat.com>
To: Cambda Zhu <cambda@...ux.alibaba.com>, netdev@...r.kernel.org
Cc: Eric Dumazet <edumazet@...gle.com>, Xuan Zhuo
 <xuanzhuo@...ux.alibaba.com>,  Dust Li <dust.li@...ux.alibaba.com>, Tony Lu
 <tonylu@...ux.alibaba.com>, Jack Yang <mingliang@...ux.alibaba.com>
Subject: Re: [PATCH net-next] net: Return user_mss for TCP_MAXSEG in
 CLOSE/LISTEN state

On Fri, 2023-05-19 at 16:01 +0800, Cambda Zhu wrote:
> > This patch removes the tp->mss_cache check in getting TCP_MAXSEG of
> > CLOSE/LISTEN sock. Checking if tp->mss_cache is zero is probably a bug,
> > since tp->mss_cache is initialized with TCP_MSS_DEFAULT. Getting
> > TCP_MAXSEG of sock in other state will still return tp->mss_cache.
> > 
> > Signed-off-by: Cambda Zhu <cambda@...ux.alibaba.com>
> > Reported-by: Jack Yang <mingliang@...ux.alibaba.com>

It's a bit strange not seeing Eric being mentioned above:

https://lore.kernel.org/netdev/CANn89i+3kL9pYtkxkwxwNMzvC_w3LNUum_2=3u+UyLBmGmifHA@mail.gmail.com/#t

Paolo