netdev - Re: [PATCH 06/15] batman-adv: Distributed ARP Table - add snooping functions for ARP messages

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Message-Id: <20120430.130555.48557916635285475.davem@davemloft.net>
Date:	Mon, 30 Apr 2012 13:05:55 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	ordex@...istici.org
Cc:	netdev@...r.kernel.org, b.a.t.m.a.n@...ts.open-mesh.org
Subject: Re: [PATCH 06/15] batman-adv: Distributed ARP Table - add snooping
 functions for ARP messages

From: Antonio Quartulli <ordex@...istici.org>
Date: Sun, 29 Apr 2012 10:57:38 +0200

> In case of an ARP message going in or out the soft_iface, it is intercepted and
> a special action is performed. In particular the DHT helper functions previously
> implemented are used to store all the ARP entries belonging to the network in
> order to provide a fast and unicast lookup instead of the classic broadcast
> flooding mechanism.
> Each node stores the entries it is responsible for (following the DHT rules) in
> its soft_iface ARP table. This makes it possible to reuse the kernel data
> structures and functions for ARP management.
> 
> Signed-off-by: Antonio Quartulli <ordex@...istici.org>

Sorry, I'm not letting subsystems outside of net/ipv4/arp.c and related
code make changes to the ARP table.

I plan to make major surgery to the way neighbour table entries are
handled and therefore the less people who get their grubby paws
directly in there, the better.

Find a way to propagate the ARP packet into the properl ARP receive
path to cause the state update to occur, I'm not letting you trigger
it by hand in the batman-adv code.

Sorry.
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