From mboxrd@z Thu Jan 1 00:00:00 1970 From: pablo@netfilter.org Subject: [PATCH 1/2] netfilter: nfnetlink_queue: use xor hash function to distribute instances Date: Thu, 14 Mar 2013 17:03:17 +0100 Message-ID: <1363276999-30144-1-git-send-email-pablo@netfilter.org> Cc: eric.dumazet@gmail.com To: netfilter-devel@vger.kernel.org Return-path: Received: from mail.us.es ([193.147.175.20]:48509 "EHLO mail.us.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932394Ab3CNQDb (ORCPT ); Thu, 14 Mar 2013 12:03:31 -0400 Sender: netfilter-devel-owner@vger.kernel.org List-ID: From: Pablo Neira Ayuso Thanks to Eric Dumazet for suggesting this during the NFWS. Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nfnetlink_queue_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netfilter/nfnetlink_queue_core.c b/net/netfilter/nfnetlink_queue_core.c index 3158d87..4512658 100644 --- a/net/netfilter/nfnetlink_queue_core.c +++ b/net/netfilter/nfnetlink_queue_core.c @@ -73,7 +73,7 @@ static struct hlist_head instance_table[INSTANCE_BUCKETS] __read_mostly; static inline u_int8_t instance_hashfn(u_int16_t queue_num) { - return ((queue_num >> 8) | queue_num) % INSTANCE_BUCKETS; + return ((queue_num >> 8) ^ queue_num) % INSTANCE_BUCKETS; } static struct nfqnl_instance * -- 1.7.10.4