Re: [RFC PATCH net-next (V2, RESENT)] ipv6: Queue fragments per interface for multicast/link-local addresses.

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On Sun, Feb 17, 2013 at 01:44:38AM +0900, YOSHIFUJI Hideaki wrote:
> We should queue fragments for the same link-local address on
> different interfaces (e.g. fe80::1%eth0 and fe80::1%eth1) to the
> different queue, because of nature of addressing architecture.
> 
> Similarly, we should queue fragments for multicast on different
> interface to the different queue.  This is okay because
> application joins group on speicific interface, and multicast
> traffic is expected only on that interface.
> 
> CC: Ben Greear <greearb@xxxxxxxxxxxxxxx>
> CC: Vlad Yasevich <vyasevic@xxxxxxxxxx>
> CC: Eric Dumazet <eric.dumazet@xxxxxxxxx>
> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@xxxxxxxxxxxxxx>

I just found this patch while cleaning up my tree. I don't know its state
(netdev patchworks says RFC and netfilter patchworks still lists it as
new). However, I also do think that the per interface matching would be
the right thing to do for multicast|linklocal fragments. Perhaps this patch
should be resend?

Yoshifuji, do you think we should also implement RFC 3168 5.3 ECN
fragmentation protection in reassembly.c? I think it should be
straightforward because it is already implemented for ipv4 and the
relevant bits just need to be moved to inet_fragment.c and become a bit
more generalized.

Thanks,

  Hannes

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