netdev - [PATCH 0/2] Add ipv4 if addr hash.

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Date:	Thu, 17 Feb 2011 20:46:35 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	netdev@...r.kernel.org
Subject: [PATCH 0/2] Add ipv4 if addr hash.

These changes are based upon something I brought up the other day,
namely that we do a full FIB lookup just to find whether a particular
unicast ipv4 address is attached to an interface.

Like ipv6, I added an RCU/RTNL protected hash table and reimplemented
__ip_dev_find() in terms of it.

These patches apply both with and without the route cache deletion
patch applied, but with the route cache removal applied the udpflood
test gets faster by ~13 seconds:

real	2m57.500s
user	0m10.640s
sys	2m46.910s

We can probably use this new table for other things as well.
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