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Re: af_packet & CHECKSUM_HW

To: Petr Vandrovec <vandrove@xxxxxxxxxx>
Subject: Re: af_packet & CHECKSUM_HW
From: "David S. Miller" <davem@xxxxxxxxxx>
Date: Mon, 17 Nov 2003 12:30:47 -0800
Cc: herbert@xxxxxxxxxxxxxxxxxxx, jmorris@xxxxxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <20031117194452.GB18448@xxxxxxxxxxxxxxx>
References: <20031115024434.GA12276@xxxxxxxxxxxxxxxxxxx> <Xine.LNX.4.44.0311160841500.31201-100000@xxxxxxxxxxxxxxxxxxxxxxxx> <20031116205146.GA8477@xxxxxxxxxxxxxxxxxxx> <20031117194452.GB18448@xxxxxxxxxxxxxxx>
Sender: netdev-bounce@xxxxxxxxxxx
On Mon, 17 Nov 2003 20:44:52 +0100
Petr Vandrovec <vandrove@xxxxxxxxxx> wrote:

> It would be nice if at least kernel did not stomp on skb2->h.raw so
> ptype callback could cope with situation and report to userspace where
> to put checksum. I already discussed it here two or so months ago, and
> only solution I was able to find is that VMware's vmnet have to parse
> itself network headers to find where to put checksum. Nothing for IPv6
> users...

Remind me again why the vmnet driver can't just run skb_checksum()
on packets that have CHECKSUM_HW set?

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