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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

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
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html