netdev - Re: [PATCH] Fix corrupt TCP packets when options space overflows with MD5SIG enabled (v2)

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Message-ID: <396556a20806181239q30024b8bv551f76a890befb0e@mail.gmail.com>
Date:	Wed, 18 Jun 2008 12:39:03 -0700
From:	"Adam Langley" <agl@...erialviolet.org>
To:	"David Miller" <davem@...emloft.net>
Cc:	billfink@...dspring.com, netdev@...r.kernel.org
Subject: Re: [PATCH] Fix corrupt TCP packets when options space overflows with MD5SIG enabled (v2)

On Wed, Jun 18, 2008 at 1:52 AM, David Miller <davem@...emloft.net> wrote:
> It's pretty easy, depending upon the timestamp resolution, to
> end up with the original transmit and the retransmit having
> the same timetsamp value.  So this suggestion in the RFC is
> I think not a complete solution.

I happen to have just (unintentionally) simulated this, i.e. a
situation where MD5 signed packets with SACKs were dropped by the
receiving host. The transmitting host keeps sending packets with SACKs
and they keep getting dropped: the connection stalled.

AGL

-- 
Adam Langley agl@...erialviolet.org http://www.imperialviolet.org
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