From 9b88790972498d235a2a4d2b66640c3c5b70bb7c Mon Sep 17 00:00:00 2001 From: Sami Farin Date: Wed, 14 Mar 2007 16:43:00 -0700 Subject: [PATCH] [NETFILTER]: nf_conntrack: use jhash2 in __hash_conntrack Now it uses jhash, but using jhash2 would be around 3-4 times faster (on P4). Signed-off-by: Sami Farin Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- net/netfilter/nf_conntrack_core.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index 9858bcb29aa0..2b0cc7a1771c 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -128,10 +128,11 @@ static u_int32_t __hash_conntrack(const struct nf_conntrack_tuple *tuple, unsigned int size, unsigned int rnd) { unsigned int a, b; - a = jhash((void *)tuple->src.u3.all, sizeof(tuple->src.u3.all), - ((tuple->src.l3num) << 16) | tuple->dst.protonum); - b = jhash((void *)tuple->dst.u3.all, sizeof(tuple->dst.u3.all), - (tuple->src.u.all << 16) | tuple->dst.u.all); + + a = jhash2(tuple->src.u3.all, ARRAY_SIZE(tuple->src.u3.all), + (tuple->src.l3num << 16) | tuple->dst.protonum); + b = jhash2(tuple->dst.u3.all, ARRAY_SIZE(tuple->dst.u3.all), + (tuple->src.u.all << 16) | tuple->dst.u.all); return jhash_2words(a, b, rnd) % size; } -- 2.30.2