diff options
author | Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> | 2010-11-25 03:15:07 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2010-11-28 19:26:21 (GMT) |
commit | 82a39eb6b3829a02e235656feddb4542517fcabc (patch) | |
tree | 51fee60823c57fd6110faa264a71b6403c1602f4 /net/ipv6/reassembly.c | |
parent | aa285b1740f5b13e5a2606a927f3129954583d78 (diff) | |
download | linux-82a39eb6b3829a02e235656feddb4542517fcabc.tar.xz |
ipv6: Prepare the tree for un-inlined jhash.
jhash is widely used in the kernel and because the functions
are inlined, the cost in size is significant. Also, the new jhash
functions are slightly larger than the previous ones so better un-inline.
As a preparation step, the calls to the internal macros are replaced
with the plain jhash function calls.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/reassembly.c')
-rw-r--r-- | net/ipv6/reassembly.c | 36 |
1 files changed, 16 insertions, 20 deletions
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c index 0f27664..07beeb0 100644 --- a/net/ipv6/reassembly.c +++ b/net/ipv6/reassembly.c @@ -104,26 +104,22 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev, unsigned int inet6_hash_frag(__be32 id, const struct in6_addr *saddr, const struct in6_addr *daddr, u32 rnd) { - u32 a, b, c; - - a = (__force u32)saddr->s6_addr32[0]; - b = (__force u32)saddr->s6_addr32[1]; - c = (__force u32)saddr->s6_addr32[2]; - - a += JHASH_GOLDEN_RATIO; - b += JHASH_GOLDEN_RATIO; - c += rnd; - __jhash_mix(a, b, c); - - a += (__force u32)saddr->s6_addr32[3]; - b += (__force u32)daddr->s6_addr32[0]; - c += (__force u32)daddr->s6_addr32[1]; - __jhash_mix(a, b, c); - - a += (__force u32)daddr->s6_addr32[2]; - b += (__force u32)daddr->s6_addr32[3]; - c += (__force u32)id; - __jhash_mix(a, b, c); + 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); return c & (INETFRAGS_HASHSZ - 1); } |