MODULE_ALIAS("arpt_NFQUEUE");
static u32 jhash_initval __read_mostly;
+static bool rnd_inited __read_mostly;
static unsigned int
-nfqueue_tg(struct sk_buff *skb, const struct xt_target_param *par)
+nfqueue_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct xt_NFQ_info *tinfo = par->targinfo;
static u32 hash_v4(const struct sk_buff *skb)
{
const struct iphdr *iph = ip_hdr(skb);
- u32 ipaddr;
+ __be32 ipaddr;
/* packets in either direction go into same queue */
ipaddr = iph->saddr ^ iph->daddr;
- return jhash_2words(ipaddr, iph->protocol, jhash_initval);
-}
-
-static unsigned int
-nfqueue_tg4_v1(struct sk_buff *skb, const struct xt_target_param *par)
-{
- const struct xt_NFQ_info_v1 *info = par->targinfo;
- u32 queue = info->queuenum;
-
- if (info->queues_total > 1)
- queue = hash_v4(skb) % info->queues_total + queue;
- return NF_QUEUE_NR(queue);
+ return jhash_2words((__force u32)ipaddr, iph->protocol, jhash_initval);
}
#if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE)
static u32 hash_v6(const struct sk_buff *skb)
{
const struct ipv6hdr *ip6h = ipv6_hdr(skb);
- u32 addr[4];
+ __be32 addr[4];
addr[0] = ip6h->saddr.s6_addr32[0] ^ ip6h->daddr.s6_addr32[0];
addr[1] = ip6h->saddr.s6_addr32[1] ^ ip6h->daddr.s6_addr32[1];
addr[2] = ip6h->saddr.s6_addr32[2] ^ ip6h->daddr.s6_addr32[2];
addr[3] = ip6h->saddr.s6_addr32[3] ^ ip6h->daddr.s6_addr32[3];
- return jhash2(addr, ARRAY_SIZE(addr), jhash_initval);
+ return jhash2((__force u32 *)addr, ARRAY_SIZE(addr), jhash_initval);
}
+#endif
static unsigned int
-nfqueue_tg6_v1(struct sk_buff *skb, const struct xt_target_param *par)
+nfqueue_tg_v1(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct xt_NFQ_info_v1 *info = par->targinfo;
u32 queue = info->queuenum;
- if (info->queues_total > 1)
- queue = hash_v6(skb) % info->queues_total + queue;
+ if (info->queues_total > 1) {
+ if (par->family == NFPROTO_IPV4)
+ queue = hash_v4(skb) % info->queues_total + queue;
+#if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE)
+ else if (par->family == NFPROTO_IPV6)
+ queue = hash_v6(skb) % info->queues_total + queue;
+#endif
+ }
return NF_QUEUE_NR(queue);
}
-#endif
-static bool nfqueue_tg_v1_check(const struct xt_tgchk_param *par)
+static int nfqueue_tg_v1_check(const struct xt_tgchk_param *par)
{
const struct xt_NFQ_info_v1 *info = par->targinfo;
u32 maxid;
+ if (unlikely(!rnd_inited)) {
+ get_random_bytes(&jhash_initval, sizeof(jhash_initval));
+ rnd_inited = true;
+ }
if (info->queues_total == 0) {
pr_err("NFQUEUE: number of total queues is 0\n");
- return false;
+ return -EINVAL;
}
maxid = info->queues_total - 1 + info->queuenum;
if (maxid > 0xffff) {
pr_err("NFQUEUE: number of queues (%u) out of range (got %u)\n",
info->queues_total, maxid);
- return false;
+ return -ERANGE;
}
- return true;
+ return 0;
}
static struct xt_target nfqueue_tg_reg[] __read_mostly = {
{
.name = "NFQUEUE",
.revision = 1,
- .family = NFPROTO_IPV4,
- .checkentry = nfqueue_tg_v1_check,
- .target = nfqueue_tg4_v1,
- .targetsize = sizeof(struct xt_NFQ_info_v1),
- .me = THIS_MODULE,
- },
-#if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE)
- {
- .name = "NFQUEUE",
- .revision = 1,
- .family = NFPROTO_IPV6,
+ .family = NFPROTO_UNSPEC,
.checkentry = nfqueue_tg_v1_check,
- .target = nfqueue_tg6_v1,
+ .target = nfqueue_tg_v1,
.targetsize = sizeof(struct xt_NFQ_info_v1),
.me = THIS_MODULE,
},
-#endif
};
static int __init nfqueue_tg_init(void)
{
- get_random_bytes(&jhash_initval, sizeof(jhash_initval));
return xt_register_targets(nfqueue_tg_reg, ARRAY_SIZE(nfqueue_tg_reg));
}