From: David S. Miller <davem@davemloft.net>
Date: Mon, 7 Mar 2011 22:27:38 +0000 (-0800)
Subject: ipv4: Validate route entry type at insert instead of every lookup.
X-Git-Tag: v2.6.39-rc1~468^2~149
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4c8237cd76a0510677dc2e3dd0f8866ec8e0b1e5;p=pandora-kernel.git

ipv4: Validate route entry type at insert instead of every lookup.

fib_semantic_match() requires that if the type doesn't signal an
automatic error, it must be of type RTN_UNICAST, RTN_LOCAL,
RTN_BROADCAST, RTN_ANYCAST, or RTN_MULTICAST.

Checking this every route lookup is pointless work.

Instead validate it during route insertion, via fib_create_info().

Also, there was nothing making sure the type value was less than
RTN_MAX, so add that missing check while we're here.

Signed-off-by: David S. Miller <davem@davemloft.net>
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