diff options
Diffstat (limited to 'net/netfilter/nf_conntrack_core.c')
| -rw-r--r-- | net/netfilter/nf_conntrack_core.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index d119f1d4c2fc..992393102d5f 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -211,24 +211,18 @@ static u32 hash_conntrack_raw(const struct nf_conntrack_tuple *tuple, unsigned int zoneid, const struct net *net) { - u64 a, b, c, d; + siphash_key_t key; get_random_once(&nf_conntrack_hash_rnd, sizeof(nf_conntrack_hash_rnd)); - /* The direction must be ignored, handle usable tuplehash members manually */ - a = (u64)tuple->src.u3.all[0] << 32 | tuple->src.u3.all[3]; - b = (u64)tuple->dst.u3.all[0] << 32 | tuple->dst.u3.all[3]; + key = nf_conntrack_hash_rnd; - c = (__force u64)tuple->src.u.all << 32 | (__force u64)tuple->dst.u.all << 16; - c |= tuple->dst.protonum; + key.key[0] ^= zoneid; + key.key[1] ^= net_hash_mix(net); - d = (u64)zoneid << 32 | net_hash_mix(net); - - /* IPv4: u3.all[1,2,3] == 0 */ - c ^= (u64)tuple->src.u3.all[1] << 32 | tuple->src.u3.all[2]; - d += (u64)tuple->dst.u3.all[1] << 32 | tuple->dst.u3.all[2]; - - return (u32)siphash_4u64(a, b, c, d, &nf_conntrack_hash_rnd); + return siphash((void *)tuple, + offsetofend(struct nf_conntrack_tuple, dst.__nfct_hash_offsetend), + &key); } static u32 scale_hash(u32 hash) |