netdev - Re: TCP always advertises zero window.

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Message-ID: <87tyka3zmh.fsf@basil.nowhere.org>
Date:	Mon, 25 Oct 2010 20:18:14 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Li Yu <raise.sail@...il.com>
Cc:	"netdev\@vger.kernel.org" <netdev@...r.kernel.org>
Subject: Re: TCP always advertises zero window.

Li Yu <raise.sail@...il.com> writes:
>
> 	According to source code, only MTU probing success and receive some non-zero length of L7 payload could grow tcp_sock->rcv_ssthresh. Because of we turn off MTU probing and TCP only received some zero-window probe from another end, so it seem that we have not any chance to update tcp_sock->rcv_ssthresh at all, so a dead loop come here.

The question is why are you turning off MTU probing?

-Andi
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