masquerading failure for at least icmp and tcp+sack on amd64

[David S. Miller]

From: Patrick McHardy <kaber at trash.net>
Date: Wed, 14 Sep 2005 03:13:39 +0200

> David S. Miller wrote:
> > I personally think netfilter should do so.
> 
> I agree. One thing I've planned for some silent moment is
> to clean up the entire netfilter checksumming code (there's
> lots of small duplicated chunks). Probably at least some
> of it will also be applicable for the remaining stack.

There is another thing I thought about today, and that is
to automatically handle this CHECKSUM_HW stuff when the
skb->data area is COW'd via pskb_expand_head() or similar.

I don't know how well that would work, but if it did then
we could consolidate all of this stuff into one spot which
is always nice.