From: Stephen Hemminger <shemminger@vyatta.com>
Date: Thu, 10 Apr 2008 11:00:28 +0000 (-0700)
Subject: IPV4: use xor rather than multiple ands for route compare
X-Git-Tag: v2.6.26-rc1~1138^2~131
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c0b8c32b1c96afc9b32b717927330025cc1c501e;p=pandora-kernel.git

IPV4: use xor rather than multiple ands for route compare

The comparison in ip_route_input is a hot path, by recoding the C
"and" as bit operations, fewer conditional branches get generated
so the code should be faster. Maybe someday Gcc will be smart
enough to do this?

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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