netdev - Re: [PATCH] tcp: call tcp_replace_ts_recent() from tcp

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Message-ID: <1366390919.16391.25.camel@edumazet-glaptop>
Date:	Fri, 19 Apr 2013 10:01:59 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Neal Cardwell <ncardwell@...gle.com>
Cc:	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Yuchung Cheng <ycheng@...gle.com>
Subject: Re: [PATCH] tcp: call tcp_replace_ts_recent() from tcp_ack()

On Fri, 2013-04-19 at 09:59 -0700, Eric Dumazet wrote:
> On Fri, 2013-04-19 at 12:33 -0400, Neal Cardwell wrote:
> 
> > This patch looks good. But AFAICT the other call site for
> > tcp_replace_ts_recent() has the same bug, which can be fixed in the
> > same way: tcp_rcv_state_process() seems to fall through the big switch
> > statement down to its call to tcp_replace_ts_recent() even in some
> > cases where tcp_ack() already decided the ACK was unacceptable.
> 
> I was not sure of the second call site, and was willing to discuss this
> with you and Yuchung.
> 
> Are you comfortable this is net material and not net-next ? (We are
> talking of states other than ESTABLISHED)

The other concern was about conflict with the prior net-next patch (tcp:
remove one indentation level in tcp_rcv_state_process())



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