netdev - Re: reading the tcp headers within the write queue

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Message-id: <20071213190859.GW7409@nuim.ie>
Date:	Thu, 13 Dec 2007 19:08:59 +0000
From:	Gavin McCullagh <Gavin.McCullagh@...m.ie>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: Re: reading the tcp headers within the write queue

Hi,

thanks for the swift reply.

On Thu, 13 Dec 2007, David Miller wrote:

> > I'm trying to hack together something which will run through the
> > retransmit queue looking at the tcp headers.
> 
> The packets in the retransmit queue are headerless, the
> header only gets added to clones of the retransmit queue
> frames during the actual transmit.

Thought that might be it. I presume there isn't any other residue of the
tcp options elsewhere, that one could look at when the packet gets
acknowledged?  I'm particularly interested in the timestamp.

> And this question belongs on netdev not linux-net.

Oops, sorry.

Gavin

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