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

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Message-ID: <20130218131901.GA24346@eerihug-hybrid.ki.sw.ericsson.se>
Date:	Mon, 18 Feb 2013 14:19:01 +0100
From:	Erik Hugne <erik.hugne@...csson.com>
To:	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
CC:	netdev <netdev@...r.kernel.org>, netfilter-devel@...r.kernel.org
Subject: Re: [RFC PATCH net-next (V2, RESENT)] ipv6: Queue fragments per
 interface for multicast/link-local addresses.

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.
>

Your patch does solve the reassembly problem when macvlans are defined, thanks!

A tad unrelated, but i think there's still some ipv6 multicast filtering 
work to be done in the macvlan driver. If you for example join an all scope 
mcast address, ff09::1 on macvlan 0 it will implicitly be 'joined' on all 
other macvlans aswell..

I can buy that linklocal multicast packets are cloned out to all macvlan devices,
but if a specific prefix is joined on one of them, i dont think it's correct that
all sibling devices should receive that traffic, unless they asked for it.

//E
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