From mboxrd@z Thu Jan 1 00:00:00 1970 From: Holger Eitzenberger Subject: [PATCH v2 1/3] NFQUEUE: introduce CPU fanout Date: Sat, 23 Mar 2013 21:04:03 +0100 Message-ID: <20130323200607.689360263@eitzenberger.org> References: <20130323200402.209591997@eitzenberger.org> To: netfilter-devel@vger.kernel.org Return-path: Received: from moutng.kundenserver.de ([212.227.126.186]:52671 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751866Ab3CWUGK (ORCPT ); Sat, 23 Mar 2013 16:06:10 -0400 Received: from holger by kruemel.eitzenberger.org with local (Exim 4.76) (envelope-from ) id 1UJUhc-000495-0S for netfilter-devel@vger.kernel.org; Sat, 23 Mar 2013 21:06:08 +0100 Content-Disposition: inline; filename=net-next/NFQUEUE-cpu-fanout.diff Sender: netfilter-devel-owner@vger.kernel.org List-ID: The 'flags' are folded into _v2 'bypass'. Signed-off-by: Holger Eitzenberger Index: net-next/include/uapi/linux/netfilter/xt_NFQUEUE.h =================================================================== --- net-next.orig/include/uapi/linux/netfilter/xt_NFQUEUE.h 2013-03-23 18:08:11.000000000 +0100 +++ net-next/include/uapi/linux/netfilter/xt_NFQUEUE.h 2013-03-23 19:00:54.000000000 +0100 @@ -26,4 +26,13 @@ __u16 bypass; }; +struct xt_NFQ_info_v3 { + __u16 queuenum; + __u16 queues_total; + __u16 flags; +#define NFQ_FLAG_BYPASS 0x01 /* for compatibility with v2 */ +#define NFQ_FLAG_CPU_FANOUT 0x02 /* use current CPU (no hashing) */ +#define NFQ_FLAG_MASK 0x03 +}; + #endif /* _XT_NFQ_TARGET_H */ Index: net-next/net/netfilter/xt_NFQUEUE.c =================================================================== --- net-next.orig/net/netfilter/xt_NFQUEUE.c 2013-03-23 18:08:11.000000000 +0100 +++ net-next/net/netfilter/xt_NFQUEUE.c 2013-03-23 19:01:11.000000000 +0100 @@ -108,7 +108,7 @@ static int nfqueue_tg_check(const struct xt_tgchk_param *par) { - const struct xt_NFQ_info_v2 *info = par->targinfo; + const struct xt_NFQ_info_v3 *info = par->targinfo; u32 maxid; if (unlikely(!rnd_inited)) { @@ -125,11 +125,39 @@ info->queues_total, maxid); return -ERANGE; } - if (par->target->revision == 2 && info->bypass > 1) + if (par->target->revision == 2 && info->flags > 1) return -EINVAL; + if (par->target->revision == 3 && info->flags & ~NFQ_FLAG_MASK) + return -EINVAL; + return 0; } +static unsigned int +nfqueue_tg_v3(struct sk_buff *skb, const struct xt_action_param *par) +{ + const struct xt_NFQ_info_v3 *info = par->targinfo; + u32 queue = info->queuenum; + + if (info->queues_total > 1) { + if (info->flags & NFQ_FLAG_CPU_FANOUT) { + int cpu = smp_processor_id(); + + queue = info->queuenum + cpu % info->queues_total; + } else { + if (par->family == NFPROTO_IPV4) + queue = (((u64) hash_v4(skb) * info->queues_total) >> + 32) + queue; +#if IS_ENABLED(CONFIG_IP6_NF_IPTABLES) + else if (par->family == NFPROTO_IPV6) + queue = (((u64) hash_v6(skb) * info->queues_total) >> + 32) + queue; +#endif + } + } + return NF_QUEUE_NR(queue); +} + static struct xt_target nfqueue_tg_reg[] __read_mostly = { { .name = "NFQUEUE", @@ -156,6 +184,15 @@ .targetsize = sizeof(struct xt_NFQ_info_v2), .me = THIS_MODULE, }, + { + .name = "NFQUEUE", + .revision = 3, + .family = NFPROTO_UNSPEC, + .checkentry = nfqueue_tg_check, + .target = nfqueue_tg_v3, + .targetsize = sizeof(struct xt_NFQ_info_v3), + .me = THIS_MODULE, + }, }; static int __init nfqueue_tg_init(void)