tree 34997f5e86aa375746ecbe4f2c8899b4fa774a5e
parent 996b1dbadcbcafb899f022303e01d46ab87920eb
author Stephen Hemminger <shemminger@vyatta.com> 1207825228 -0700
committer David S. Miller <davem@davemloft.net> 1207825228 -0700

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>