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ipv6: optimize inet6_hash_frag() 

Use ipv6_addr_hash() and a single jhash invocation.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2013-02-15 18:14:48 +00:00 committed by David S. Miller
parent c8c5b28715
commit 279e9f2ff7
1 changed files with 1 additions and 14 deletions
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15
net/ipv6/reassembly.c
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@ -79,20 +79,7 @@ unsigned int inet6_hash_frag(__be32 id, const struct in6_addr *saddr,
{
u32 c;
c = jhash_3words((__force u32)saddr->s6_addr32[0],
(__force u32)saddr->s6_addr32[1],
(__force u32)saddr->s6_addr32[2],
rnd);
c = jhash_3words((__force u32)saddr->s6_addr32[3],
(__force u32)daddr->s6_addr32[0],
(__force u32)daddr->s6_addr32[1],
c);
c = jhash_3words((__force u32)daddr->s6_addr32[2],
(__force u32)daddr->s6_addr32[3],
(__force u32)id,
c);
c = jhash_3words(ipv6_addr_hash(saddr), ipv6_addr_hash(daddr), id, rnd);
return c & (INETFRAGS_HASHSZ - 1);
}