Re: Do you know about skb_header_pointer() ?

[Harald Welte <laforge@netfilter.org>]

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On Thu, Aug 19, 2004 at 07:17:50AM -0700, David S. Miller wrote:
> On Thu, 19 Aug 2004 11:44:01 +0200
> Harald Welte <laforge@netfilter.org> wrote:
> 
> > http://lists.netfilter.org/pipermail/netfilter-devel/2004-August/016277.html
> 
> I totally disagree with this change.

Ok, that's fine with me.   Let's stay with the skb_header_pointer(),
which by the way [as expected] is not visible on my profile runs.

Still, I am curious to know if anyone on one of the Cc'ed mailinglists
can imagine a case where parts of the header up and including the tcp
options could be non-linear.

And no, I do not want to know this in order to say that
skb_heder_pointer() is bad.  I just want to know, because then we might
still need some magic for those cases in order to avoid a case where we
end up with per-rule copies or similar stuff again.

Thanks!

-- 
- Harald Welte <laforge@netfilter.org>             http://www.netfilter.org/
============================================================================
  "Fragmentation is like classful addressing -- an interesting early
   architectural error that shows how much experimentation was going
   on while IP was being designed."                    -- Paul Vixie

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