netdev - Re: [PATCH net-2.6.22-rc7] xfrm beet interfamily support

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Date:	Tue, 31 Jul 2007 14:08:15 +0300
From:	Joakim Koskela <joakim.koskela@...t.fi>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	netdev@...r.kernel.org, David Miller <davem@...emloft.net>
Subject: Re: [PATCH net-2.6.22-rc7] xfrm beet interfamily support

On Tuesday 31 July 2007 13:51:42 Patrick McHardy wrote:
> Joakim Koskela wrote:
> > I'm not sure I really got this. IPv6/IPv4 means IPv6 inner, IPv4 outer,
> > right? Isn't that called from xfrm4_output_one and subsequently passed
> > through the right filters as well (as it has a ipv4 header by then)?
>
> I think you're right, it uses xfrm4_output. But there's a mismatch
> in either case, in both cases (IPv4 and IPv6) we first call the
> POSTROUTING hook for this family, than do the transform (changing
> the family), then call the OUTPUT hook for the same family. So
> either the POSTROUTING or the OUTPUT hook is called for the wrong
> family.

Ok, so changing int xfrm[46]_output(struct sk_buff*) to use the right PF & 
hook based on the skb's [current] family should put things through the right 
hoops, right?

br, j
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