Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6

Conflicts:

	net/netfilter/nf_conntrack_netlink.c

include/linux/netfilter_bridge/ebtables.h

@@ -300,7 +300,8 @@ struct ebt_table
 
 #define EBT_ALIGN(s) (((s) + (__alignof__(struct ebt_replace)-1)) & \
 		     ~(__alignof__(struct ebt_replace)-1))
-extern int ebt_register_table(struct ebt_table *table);
+extern struct ebt_table *ebt_register_table(struct net *net,
+					    struct ebt_table *table);
 extern void ebt_unregister_table(struct ebt_table *table);
 extern unsigned int ebt_do_table(unsigned int hook, struct sk_buff *skb,
    const struct net_device *in, const struct net_device *out,

include/linux/netfilter_ipv4/ipt_policy.h

 #ifndef _IPT_POLICY_H
 #define _IPT_POLICY_H
 
+#include <linux/netfilter/xt_policy.h>
+
 #define IPT_POLICY_MAX_ELEM		XT_POLICY_MAX_ELEM
 
 /* ipt_policy_flags */

include/linux/netfilter_ipv6/ip6t_policy.h

 #ifndef _IP6T_POLICY_H
 #define _IP6T_POLICY_H
 
+#include <linux/netfilter/xt_policy.h>
+
 #define IP6T_POLICY_MAX_ELEM		XT_POLICY_MAX_ELEM
 
 /* ip6t_policy_flags */

include/net/netfilter/nf_conntrack.h

@@ -199,7 +199,7 @@ __nf_conntrack_find(struct net *net, const struct nf_conntrack_tuple *tuple);
 
 extern void nf_conntrack_hash_insert(struct nf_conn *ct);
 
-extern void nf_conntrack_flush(struct net *net);
+extern void nf_conntrack_flush(struct net *net, u32 pid, int report);
 
 extern bool nf_ct_get_tuplepr(const struct sk_buff *skb,
 			      unsigned int nhoff, u_int16_t l3num,
@@ -298,5 +298,8 @@ do {							\
 	local_bh_enable();				\
 } while (0)
 
+#define MODULE_ALIAS_NFCT_HELPER(helper) \
+        MODULE_ALIAS("nfct-helper-" helper)
+
 #endif /* __KERNEL__ */
 #endif /* _NF_CONNTRACK_H */

include/net/netfilter/nf_conntrack_ecache.h

@@ -17,6 +17,13 @@ struct nf_conntrack_ecache {
 	unsigned int events;
 };
 
+/* This structure is passed to event handler */
+struct nf_ct_event {
+	struct nf_conn *ct;
+	u32 pid;
+	int report;
+};
+
 extern struct atomic_notifier_head nf_conntrack_chain;
 extern int nf_conntrack_register_notifier(struct notifier_block *nb);
 extern int nf_conntrack_unregister_notifier(struct notifier_block *nb);
@@ -39,22 +46,56 @@ nf_conntrack_event_cache(enum ip_conntrack_events event, struct nf_conn *ct)
 	local_bh_enable();
 }
 
-static inline void nf_conntrack_event(enum ip_conntrack_events event,
-				      struct nf_conn *ct)
+static inline void
+nf_conntrack_event_report(enum ip_conntrack_events event,
+			  struct nf_conn *ct,
+			  u32 pid,
+			  int report)
 {
+	struct nf_ct_event item = {
+		.ct 	= ct,
+		.pid	= pid,
+		.report = report
+	};
 	if (nf_ct_is_confirmed(ct) && !nf_ct_is_dying(ct))
-		atomic_notifier_call_chain(&nf_conntrack_chain, event, ct);
+		atomic_notifier_call_chain(&nf_conntrack_chain, event, &item);
 }
 
+static inline void
+nf_conntrack_event(enum ip_conntrack_events event, struct nf_conn *ct)
+{
+	nf_conntrack_event_report(event, ct, 0, 0);
+}
+
+struct nf_exp_event {
+	struct nf_conntrack_expect *exp;
+	u32 pid;
+	int report;
+};
+
 extern struct atomic_notifier_head nf_ct_expect_chain;
 extern int nf_ct_expect_register_notifier(struct notifier_block *nb);
 extern int nf_ct_expect_unregister_notifier(struct notifier_block *nb);
 
+static inline void
+nf_ct_expect_event_report(enum ip_conntrack_expect_events event,
+			  struct nf_conntrack_expect *exp,
+			  u32 pid,
+			  int report)
+{
+	struct nf_exp_event item = {
+		.exp	= exp,
+		.pid	= pid,
+		.report = report
+	};
+	atomic_notifier_call_chain(&nf_ct_expect_chain, event, &item);
+}
+
 static inline void
 nf_ct_expect_event(enum ip_conntrack_expect_events event,
 		   struct nf_conntrack_expect *exp)
 {
-	atomic_notifier_call_chain(&nf_ct_expect_chain, event, exp);
+	nf_ct_expect_event_report(event, exp, 0, 0);
 }
 
 extern int nf_conntrack_ecache_init(struct net *net);
@@ -66,9 +107,17 @@ static inline void nf_conntrack_event_cache(enum ip_conntrack_events event,
 					    struct nf_conn *ct) {}
 static inline void nf_conntrack_event(enum ip_conntrack_events event,
 				      struct nf_conn *ct) {}
+static inline void nf_conntrack_event_report(enum ip_conntrack_events event,
+					     struct nf_conn *ct,
+					     u32 pid,
+					     int report) {}
 static inline void nf_ct_deliver_cached_events(const struct nf_conn *ct) {}
 static inline void nf_ct_expect_event(enum ip_conntrack_expect_events event,
 				      struct nf_conntrack_expect *exp) {}
+static inline void nf_ct_expect_event_report(enum ip_conntrack_expect_events e,
+					     struct nf_conntrack_expect *exp,
+ 					     u32 pid,
+ 					     int report) {}
 static inline void nf_ct_event_cache_flush(struct net *net) {}
 
 static inline int nf_conntrack_ecache_init(struct net *net)

include/net/netfilter/nf_conntrack_expect.h

@@ -100,6 +100,8 @@ void nf_ct_expect_init(struct nf_conntrack_expect *, unsigned int, u_int8_t,
 		       u_int8_t, const __be16 *, const __be16 *);
 void nf_ct_expect_put(struct nf_conntrack_expect *exp);
 int nf_ct_expect_related(struct nf_conntrack_expect *expect);
+int nf_ct_expect_related_report(struct nf_conntrack_expect *expect, 
+				u32 pid, int report);
 
 #endif /*_NF_CONNTRACK_EXPECT_H*/
 

include/net/netfilter/nf_conntrack_helper.h

@@ -38,9 +38,6 @@ struct nf_conntrack_helper
 	unsigned int expect_class_max;
 };
 
-extern struct nf_conntrack_helper *
-__nf_ct_helper_find(const struct nf_conntrack_tuple *tuple);
-
 extern struct nf_conntrack_helper *
 __nf_conntrack_helper_find_byname(const char *name);
 
@@ -49,6 +46,8 @@ extern void nf_conntrack_helper_unregister(struct nf_conntrack_helper *);
 
 extern struct nf_conn_help *nf_ct_helper_ext_add(struct nf_conn *ct, gfp_t gfp);
 
+extern int __nf_ct_try_assign_helper(struct nf_conn *ct, gfp_t flags);
+
 static inline struct nf_conn_help *nfct_help(const struct nf_conn *ct)
 {
 	return nf_ct_ext_find(ct, NF_CT_EXT_HELPER);

include/net/netfilter/nf_conntrack_l4proto.h

@@ -129,7 +129,7 @@ extern const struct nla_policy nf_ct_port_nla_policy[];
 	 && net_ratelimit())
 #endif
 #else
-#define LOG_INVALID(net, proto) 0
+static inline int LOG_INVALID(struct net *net, int proto) { return 0; }
 #endif /* CONFIG_SYSCTL */
 
 #endif /*_NF_CONNTRACK_PROTOCOL_H*/

include/net/netfilter/nfnetlink_log.h

+#ifndef _KER_NFNETLINK_LOG_H
+#define _KER_NFNETLINK_LOG_H
+
+void
+nfulnl_log_packet(u_int8_t pf,
+		  unsigned int hooknum,
+		  const struct sk_buff *skb,
+		  const struct net_device *in,
+		  const struct net_device *out,
+		  const struct nf_loginfo *li_user,
+		  const char *prefix);
+
+#endif /* _KER_NFNETLINK_LOG_H */
+

include/net/netns/x_tables.h

@@ -4,7 +4,12 @@
 #include <linux/list.h>
 #include <linux/netfilter.h>
 
+struct ebt_table;
+
 struct netns_xt {
 	struct list_head tables[NFPROTO_NUMPROTO];
+	struct ebt_table *broute_table;
+	struct ebt_table *frame_filter;
+	struct ebt_table *frame_nat;
 };
 #endif

net/bridge/br_netfilter.c

@@ -369,7 +369,7 @@ static int br_nf_pre_routing_finish(struct sk_buff *skb)
 			if (err != -EHOSTUNREACH || !in_dev || IN_DEV_FORWARD(in_dev))
 				goto free_skb;
 
-			if (!ip_route_output_key(&init_net, &rt, &fl)) {
+			if (!ip_route_output_key(dev_net(dev), &rt, &fl)) {
 				/* - Bridged-and-DNAT'ed traffic doesn't
 				 *   require ip_forwarding. */
 				if (((struct dst_entry *)rt)->dev == dev) {

net/bridge/netfilter/ebtable_broute.c

@@ -56,29 +56,47 @@ static int ebt_broute(struct sk_buff *skb)
 	int ret;
 
 	ret = ebt_do_table(NF_BR_BROUTING, skb, skb->dev, NULL,
-	   &broute_table);
+			   dev_net(skb->dev)->xt.broute_table);
 	if (ret == NF_DROP)
 		return 1; /* route it */
 	return 0; /* bridge it */
 }
 
+static int __net_init broute_net_init(struct net *net)
+{
+	net->xt.broute_table = ebt_register_table(net, &broute_table);
+	if (IS_ERR(net->xt.broute_table))
+		return PTR_ERR(net->xt.broute_table);
+	return 0;
+}
+
+static void __net_exit broute_net_exit(struct net *net)
+{
+	ebt_unregister_table(net->xt.broute_table);
+}
+
+static struct pernet_operations broute_net_ops = {
+	.init = broute_net_init,
+	.exit = broute_net_exit,
+};
+
 static int __init ebtable_broute_init(void)
 {
 	int ret;
 
-	ret = ebt_register_table(&broute_table);
+	ret = register_pernet_subsys(&broute_net_ops);
 	if (ret < 0)
 		return ret;
 	/* see br_input.c */
 	rcu_assign_pointer(br_should_route_hook, ebt_broute);
-	return ret;
+	return 0;
 }
 
 static void __exit ebtable_broute_fini(void)
 {
 	rcu_assign_pointer(br_should_route_hook, NULL);
 	synchronize_net();
-	ebt_unregister_table(&broute_table);
+	unregister_pernet_subsys(&broute_net_ops);
 }
 
 module_init(ebtable_broute_init);

net/bridge/netfilter/ebtable_filter.c

@@ -61,29 +61,36 @@ static struct ebt_table frame_filter =
 };
 
 static unsigned int
-ebt_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in,
+ebt_in_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in,
    const struct net_device *out, int (*okfn)(struct sk_buff *))
 {
-	return ebt_do_table(hook, skb, in, out, &frame_filter);
+	return ebt_do_table(hook, skb, in, out, dev_net(in)->xt.frame_filter);
+}
+
+static unsigned int
+ebt_out_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in,
+   const struct net_device *out, int (*okfn)(struct sk_buff *))
+{
+	return ebt_do_table(hook, skb, in, out, dev_net(out)->xt.frame_filter);
 }
 
 static struct nf_hook_ops ebt_ops_filter[] __read_mostly = {
 	{
-		.hook		= ebt_hook,
+		.hook		= ebt_in_hook,
 		.owner		= THIS_MODULE,
 		.pf		= PF_BRIDGE,
 		.hooknum	= NF_BR_LOCAL_IN,
 		.priority	= NF_BR_PRI_FILTER_BRIDGED,
 	},
 	{
-		.hook		= ebt_hook,
+		.hook		= ebt_in_hook,
 		.owner		= THIS_MODULE,
 		.pf		= PF_BRIDGE,
 		.hooknum	= NF_BR_FORWARD,
 		.priority	= NF_BR_PRI_FILTER_BRIDGED,
 	},
 	{
-		.hook		= ebt_hook,
+		.hook		= ebt_out_hook,
 		.owner		= THIS_MODULE,
 		.pf		= PF_BRIDGE,
 		.hooknum	= NF_BR_LOCAL_OUT,
@@ -91,23 +98,41 @@ static struct nf_hook_ops ebt_ops_filter[] __read_mostly = {
 	},
 };
 
+static int __net_init frame_filter_net_init(struct net *net)
+{
+	net->xt.frame_filter = ebt_register_table(net, &frame_filter);
+	if (IS_ERR(net->xt.frame_filter))
+		return PTR_ERR(net->xt.frame_filter);
+	return 0;
+}
+
+static void __net_exit frame_filter_net_exit(struct net *net)
+{
+	ebt_unregister_table(net->xt.frame_filter);
+}
+
+static struct pernet_operations frame_filter_net_ops = {
+	.init = frame_filter_net_init,
+	.exit = frame_filter_net_exit,
+};
+
 static int __init ebtable_filter_init(void)
 {
 	int ret;
 
-	ret = ebt_register_table(&frame_filter);
+	ret = register_pernet_subsys(&frame_filter_net_ops);
 	if (ret < 0)
 		return ret;
 	ret = nf_register_hooks(ebt_ops_filter, ARRAY_SIZE(ebt_ops_filter));
 	if (ret < 0)
-		ebt_unregister_table(&frame_filter);
+		unregister_pernet_subsys(&frame_filter_net_ops);
 	return ret;
 }
 
 static void __exit ebtable_filter_fini(void)
 {
 	nf_unregister_hooks(ebt_ops_filter, ARRAY_SIZE(ebt_ops_filter));
-	ebt_unregister_table(&frame_filter);
+	unregister_pernet_subsys(&frame_filter_net_ops);
 }
 
 module_init(ebtable_filter_init);

net/bridge/netfilter/ebtable_nat.c

@@ -61,36 +61,36 @@ static struct ebt_table frame_nat =
 };
 
 static unsigned int
-ebt_nat_dst(unsigned int hook, struct sk_buff *skb, const struct net_device *in
+ebt_nat_in(unsigned int hook, struct sk_buff *skb, const struct net_device *in
    , const struct net_device *out, int (*okfn)(struct sk_buff *))
 {
-	return ebt_do_table(hook, skb, in, out, &frame_nat);
+	return ebt_do_table(hook, skb, in, out, dev_net(in)->xt.frame_nat);
 }
 
 static unsigned int
-ebt_nat_src(unsigned int hook, struct sk_buff *skb, const struct net_device *in
+ebt_nat_out(unsigned int hook, struct sk_buff *skb, const struct net_device *in
    , const struct net_device *out, int (*okfn)(struct sk_buff *))
 {
-	return ebt_do_table(hook, skb, in, out, &frame_nat);
+	return ebt_do_table(hook, skb, in, out, dev_net(out)->xt.frame_nat);
 }
 
 static struct nf_hook_ops ebt_ops_nat[] __read_mostly = {
 	{
-		.hook		= ebt_nat_dst,
+		.hook		= ebt_nat_out,
 		.owner		= THIS_MODULE,
 		.pf		= PF_BRIDGE,
 		.hooknum	= NF_BR_LOCAL_OUT,
 		.priority	= NF_BR_PRI_NAT_DST_OTHER,
 	},
 	{
-		.hook		= ebt_nat_src,
+		.hook		= ebt_nat_out,
 		.owner		= THIS_MODULE,
 		.pf		= PF_BRIDGE,
 		.hooknum	= NF_BR_POST_ROUTING,
 		.priority	= NF_BR_PRI_NAT_SRC,
 	},
 	{
-		.hook		= ebt_nat_dst,
+		.hook		= ebt_nat_in,
 		.owner		= THIS_MODULE,
 		.pf		= PF_BRIDGE,
 		.hooknum	= NF_BR_PRE_ROUTING,
@@ -98,23 +98,41 @@ static struct nf_hook_ops ebt_ops_nat[] __read_mostly = {
 	},
 };
 
+static int __net_init frame_nat_net_init(struct net *net)
+{
+	net->xt.frame_nat = ebt_register_table(net, &frame_nat);
+	if (IS_ERR(net->xt.frame_nat))
+		return PTR_ERR(net->xt.frame_nat);
+	return 0;
+}
+
+static void __net_exit frame_nat_net_exit(struct net *net)
+{
+	ebt_unregister_table(net->xt.frame_nat);
+}
+
+static struct pernet_operations frame_nat_net_ops = {
+	.init = frame_nat_net_init,
+	.exit = frame_nat_net_exit,
+};
+
 static int __init ebtable_nat_init(void)
 {
 	int ret;
 
-	ret = ebt_register_table(&frame_nat);
+	ret = register_pernet_subsys(&frame_nat_net_ops);
 	if (ret < 0)
 		return ret;
 	ret = nf_register_hooks(ebt_ops_nat, ARRAY_SIZE(ebt_ops_nat));
 	if (ret < 0)
-		ebt_unregister_table(&frame_nat);
+		unregister_pernet_subsys(&frame_nat_net_ops);
 	return ret;
 }
 
 static void __exit ebtable_nat_fini(void)
 {
 	nf_unregister_hooks(ebt_ops_nat, ARRAY_SIZE(ebt_ops_nat));
-	ebt_unregister_table(&frame_nat);
+	unregister_pernet_subsys(&frame_nat_net_ops);
 }
 
 module_init(ebtable_nat_init);

net/bridge/netfilter/ebtables.c

@@ -55,7 +55,6 @@
 
 
 static DEFINE_MUTEX(ebt_mutex);
-static LIST_HEAD(ebt_tables);
 
 static struct xt_target ebt_standard_target = {
 	.name       = "standard",
@@ -315,9 +314,11 @@ find_inlist_lock(struct list_head *head, const char *name, const char *prefix,
 }
 
 static inline struct ebt_table *
-find_table_lock(const char *name, int *error, struct mutex *mutex)
+find_table_lock(struct net *net, const char *name, int *error,
+		struct mutex *mutex)
 {
-	return find_inlist_lock(&ebt_tables, name, "ebtable_", error, mutex);
+	return find_inlist_lock(&net->xt.tables[NFPROTO_BRIDGE], name,
+				"ebtable_", error, mutex);
 }
 
 static inline int
@@ -944,7 +945,7 @@ static void get_counters(struct ebt_counter *oldcounters,
 }
 
 /* replace the table */
-static int do_replace(void __user *user, unsigned int len)
+static int do_replace(struct net *net, void __user *user, unsigned int len)
 {
 	int ret, i, countersize;
 	struct ebt_table_info *newinfo;
@@ -1016,7 +1017,7 @@ static int do_replace(void __user *user, unsigned int len)
 	if (ret != 0)
 		goto free_counterstmp;
 
-	t = find_table_lock(tmp.name, &ret, &ebt_mutex);
+	t = find_table_lock(net, tmp.name, &ret, &ebt_mutex);
 	if (!t) {
 		ret = -ENOENT;
 		goto free_iterate;
@@ -1097,7 +1098,7 @@ static int do_replace(void __user *user, unsigned int len)
 	return ret;
 }
 
-int ebt_register_table(struct ebt_table *table)
+struct ebt_table *ebt_register_table(struct net *net, struct ebt_table *table)
 {
 	struct ebt_table_info *newinfo;
 	struct ebt_table *t;
@@ -1109,14 +1110,21 @@ int ebt_register_table(struct ebt_table *table)
 	    repl->entries_size == 0 ||
 	    repl->counters || table->private) {
 		BUGPRINT("Bad table data for ebt_register_table!!!\n");
-		return -EINVAL;
+		return ERR_PTR(-EINVAL);
+	}
+
+	/* Don't add one table to multiple lists. */
+	table = kmemdup(table, sizeof(struct ebt_table), GFP_KERNEL);
+	if (!table) {
+		ret = -ENOMEM;
+		goto out;
 	}
 
 	countersize = COUNTER_OFFSET(repl->nentries) * nr_cpu_ids;
 	newinfo = vmalloc(sizeof(*newinfo) + countersize);
 	ret = -ENOMEM;
 	if (!newinfo)
-		return -ENOMEM;
+		goto free_table;
 
 	p = vmalloc(repl->entries_size);
 	if (!p)
@@ -1148,7 +1156,7 @@ int ebt_register_table(struct ebt_table *table)
 
 	if (table->check && table->check(newinfo, table->valid_hooks)) {
 		BUGPRINT("The table doesn't like its own initial data, lol\n");
-		return -EINVAL;
+		return ERR_PTR(-EINVAL);
 	}
 
 	table->private = newinfo;
@@ -1157,7 +1165,7 @@ int ebt_register_table(struct ebt_table *table)
 	if (ret != 0)
 		goto free_chainstack;
 
-	list_for_each_entry(t, &ebt_tables, list) {
+	list_for_each_entry(t, &net->xt.tables[NFPROTO_BRIDGE], list) {
 		if (strcmp(t->name, table->name) == 0) {
 			ret = -EEXIST;
 			BUGPRINT("Table name already exists\n");
@@ -1170,9 +1178,9 @@ int ebt_register_table(struct ebt_table *table)
 		ret = -ENOENT;
 		goto free_unlock;
 	}
-	list_add(&table->list, &ebt_tables);
+	list_add(&table->list, &net->xt.tables[NFPROTO_BRIDGE]);
 	mutex_unlock(&ebt_mutex);
-	return 0;
+	return table;
 free_unlock:
 	mutex_unlock(&ebt_mutex);
 free_chainstack:
@@ -1184,7 +1192,10 @@ int ebt_register_table(struct ebt_table *table)
 	vfree(newinfo->entries);
 free_newinfo:
 	vfree(newinfo);
-	return ret;
+free_table:
+	kfree(table);
+out:
+	return ERR_PTR(ret);
 }
 
 void ebt_unregister_table(struct ebt_table *table)
@@ -1198,6 +1209,10 @@ void ebt_unregister_table(struct ebt_table *table)
 	mutex_lock(&ebt_mutex);
 	list_del(&table->list);
 	mutex_unlock(&ebt_mutex);
+	EBT_ENTRY_ITERATE(table->private->entries, table->private->entries_size,
+			  ebt_cleanup_entry, NULL);
+	if (table->private->nentries)
+		module_put(table->me);
 	vfree(table->private->entries);
 	if (table->private->chainstack) {
 		for_each_possible_cpu(i)
@@ -1205,10 +1220,11 @@ void ebt_unregister_table(struct ebt_table *table)
 		vfree(table->private->chainstack);
 	}
 	vfree(table->private);
+	kfree(table);
 }
 
 /* userspace just supplied us with counters */
-static int update_counters(void __user *user, unsigned int len)
+static int update_counters(struct net *net, void __user *user, unsigned int len)
 {
 	int i, ret;
 	struct ebt_counter *tmp;
@@ -1228,7 +1244,7 @@ static int update_counters(void __user *user, unsigned int len)
 		return -ENOMEM;
 	}
 
-	t = find_table_lock(hlp.name, &ret, &ebt_mutex);
+	t = find_table_lock(net, hlp.name, &ret, &ebt_mutex);
 	if (!t)
 		goto free_tmp;
 
@@ -1386,10 +1402,10 @@ static int do_ebt_set_ctl(struct sock *sk,
 
 	switch(cmd) {
 	case EBT_SO_SET_ENTRIES:
-		ret = do_replace(user, len);
+		ret = do_replace(sock_net(sk), user, len);
 		break;
 	case EBT_SO_SET_COUNTERS:
-		ret = update_counters(user, len);
+		ret = update_counters(sock_net(sk), user, len);
 		break;
 	default:
 		ret = -EINVAL;
@@ -1406,7 +1422,7 @@ static int do_ebt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
 	if (copy_from_user(&tmp, user, sizeof(tmp)))
 		return -EFAULT;
 
-	t = find_table_lock(tmp.name, &ret, &ebt_mutex);
+	t = find_table_lock(sock_net(sk), tmp.name, &ret, &ebt_mutex);
 	if (!t)
 		return ret;
 

net/ipv4/netfilter.c

@@ -125,6 +125,7 @@ struct ip_rt_info {
 	__be32 daddr;
 	__be32 saddr;
 	u_int8_t tos;
+	u_int32_t mark;
 };
 
 static void nf_ip_saveroute(const struct sk_buff *skb,
@@ -138,6 +139,7 @@ static void nf_ip_saveroute(const struct sk_buff *skb,
 		rt_info->tos = iph->tos;
 		rt_info->daddr = iph->daddr;
 		rt_info->saddr = iph->saddr;
+		rt_info->mark = skb->mark;
 	}
 }
 
@@ -150,6 +152,7 @@ static int nf_ip_reroute(struct sk_buff *skb,
 		const struct iphdr *iph = ip_hdr(skb);
 
 		if (!(iph->tos == rt_info->tos
+		      && skb->mark == rt_info->mark
 		      && iph->daddr == rt_info->daddr
 		      && iph->saddr == rt_info->saddr))
 			return ip_route_me_harder(skb, RTN_UNSPEC);

net/ipv4/netfilter/arptable_filter.c

@@ -75,16 +75,6 @@ static unsigned int arpt_out_hook(unsigned int hook,
 			     dev_net(out)->ipv4.arptable_filter);
 }
 
-static unsigned int arpt_forward_hook(unsigned int hook,
-				      struct sk_buff *skb,
-				      const struct net_device *in,
-				      const struct net_device *out,
-				      int (*okfn)(struct sk_buff *))
-{
-	return arpt_do_table(skb, hook, in, out,
-			     dev_net(in)->ipv4.arptable_filter);
-}
-
 static struct nf_hook_ops arpt_ops[] __read_mostly = {
 	{
 		.hook		= arpt_in_hook,
@@ -101,7 +91,7 @@ static struct nf_hook_ops arpt_ops[] __read_mostly = {
 		.priority	= NF_IP_PRI_FILTER,
 	},
 	{
-		.hook		= arpt_forward_hook,
+		.hook		= arpt_in_hook,
 		.owner		= THIS_MODULE,
 		.pf		= NFPROTO_ARP,
 		.hooknum	= NF_ARP_FORWARD,

net/ipv4/netfilter/ipt_addrtype.c

@@ -23,24 +23,25 @@ MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
 MODULE_DESCRIPTION("Xtables: address type match for IPv4");
 
-static inline bool match_type(const struct net_device *dev, __be32 addr,
-			      u_int16_t mask)
+static inline bool match_type(struct net *net, const struct net_device *dev,
+			      __be32 addr, u_int16_t mask)
 {
-	return !!(mask & (1 << inet_dev_addr_type(&init_net, dev, addr)));
+	return !!(mask & (1 << inet_dev_addr_type(net, dev, addr)));
 }
 
 static bool
 addrtype_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par)
 {
+	struct net *net = dev_net(par->in ? par->in : par->out);
 	const struct ipt_addrtype_info *info = par->matchinfo;
 	const struct iphdr *iph = ip_hdr(skb);
 	bool ret = true;
 
 	if (info->source)
-		ret &= match_type(NULL, iph->saddr, info->source) ^
+		ret &= match_type(net, NULL, iph->saddr, info->source) ^
 		       info->invert_source;
 	if (info->dest)
-		ret &= match_type(NULL, iph->daddr, info->dest) ^
+		ret &= match_type(net, NULL, iph->daddr, info->dest) ^
 		       info->invert_dest;
 
 	return ret;
@@ -49,6 +50,7 @@ addrtype_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par)
 static bool
 addrtype_mt_v1(const struct sk_buff *skb, const struct xt_match_param *par)
 {
+	struct net *net = dev_net(par->in ? par->in : par->out);
 	const struct ipt_addrtype_info_v1 *info = par->matchinfo;
 	const struct iphdr *iph = ip_hdr(skb);
 	const struct net_device *dev = NULL;
@@ -60,10 +62,10 @@ addrtype_mt_v1(const struct sk_buff *skb, const struct xt_match_param *par)
 		dev = par->out;
 
 	if (info->source)
-		ret &= match_type(dev, iph->saddr, info->source) ^
+		ret &= match_type(net, dev, iph->saddr, info->source) ^
 		       (info->flags & IPT_ADDRTYPE_INVERT_SOURCE);
 	if (ret && info->dest)
-		ret &= match_type(dev, iph->daddr, info->dest) ^
+		ret &= match_type(net, dev, iph->daddr, info->dest) ^
 		       !!(info->flags & IPT_ADDRTYPE_INVERT_DEST);
 	return ret;
 }

net/ipv4/netfilter/nf_nat_rule.c

@@ -86,24 +86,6 @@ ipt_snat_target(struct sk_buff *skb, const struct xt_target_param *par)
 	return nf_nat_setup_info(ct, &mr->range[0], IP_NAT_MANIP_SRC);
 }
 
-/* Before 2.6.11 we did implicit source NAT if required. Warn about change. */
-static void warn_if_extra_mangle(struct net *net, __be32 dstip, __be32 srcip)
-{
-	static int warned = 0;
-	struct flowi fl = { .nl_u = { .ip4_u = { .daddr = dstip } } };
-	struct rtable *rt;
-
-	if (ip_route_output_key(net, &rt, &fl) != 0)
-		return;
-
-	if (rt->rt_src != srcip && !warned) {
-		printk("NAT: no longer support implicit source local NAT\n");
-		printk("NAT: packet src %pI4 -> dst %pI4\n", &srcip, &dstip);
-		warned = 1;
-	}
-	ip_rt_put(rt);
-}
-
 static unsigned int
 ipt_dnat_target(struct sk_buff *skb, const struct xt_target_param *par)
 {
@@ -119,11 +101,6 @@ ipt_dnat_target(struct sk_buff *skb, const struct xt_target_param *par)
 	/* Connection must be valid and new. */
 	NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED));
 
-	if (par->hooknum == NF_INET_LOCAL_OUT &&
-	    mr->range[0].flags & IP_NAT_RANGE_MAP_IPS)
-		warn_if_extra_mangle(dev_net(par->out), ip_hdr(skb)->daddr,
-				     mr->range[0].min_ip);
-
 	return nf_nat_setup_info(ct, &mr->range[0], IP_NAT_MANIP_DST);
 }
 

net/ipv6/netfilter.c

@@ -56,6 +56,7 @@ EXPORT_SYMBOL(ip6_route_me_harder);
 struct ip6_rt_info {
 	struct in6_addr daddr;
 	struct in6_addr saddr;
+	u_int32_t mark;
 };
 
 static void nf_ip6_saveroute(const struct sk_buff *skb,
@@ -68,6 +69,7 @@ static void nf_ip6_saveroute(const struct sk_buff *skb,
 
 		rt_info->daddr = iph->daddr;
 		rt_info->saddr = iph->saddr;
+		rt_info->mark = skb->mark;
 	}
 }
 
@@ -79,7 +81,8 @@ static int nf_ip6_reroute(struct sk_buff *skb,
 	if (entry->hook == NF_INET_LOCAL_OUT) {
 		struct ipv6hdr *iph = ipv6_hdr(skb);
 		if (!ipv6_addr_equal(&iph->daddr, &rt_info->daddr) ||
-		    !ipv6_addr_equal(&iph->saddr, &rt_info->saddr))
+		    !ipv6_addr_equal(&iph->saddr, &rt_info->saddr) ||
+		    skb->mark != rt_info->mark)
 			return ip6_route_me_harder(skb);
 	}
 	return 0;

net/ipv6/netfilter/ip6table_filter.c

@@ -61,7 +61,7 @@ static struct xt_table packet_filter = {
 
 /* The work comes in here from netfilter.c. */
 static unsigned int
-ip6t_local_in_hook(unsigned int hook,
+ip6t_in_hook(unsigned int hook,
 		   struct sk_buff *skb,
 		   const struct net_device *in,
 		   const struct net_device *out,
@@ -71,17 +71,6 @@ ip6t_local_in_hook(unsigned int hook,
 			     dev_net(in)->ipv6.ip6table_filter);
 }
 
-static unsigned int
-ip6t_forward_hook(unsigned int hook,
-		  struct sk_buff *skb,
-		  const struct net_device *in,
-		  const struct net_device *out,
-		  int (*okfn)(struct sk_buff *))
-{
-	return ip6t_do_table(skb, hook, in, out,
-			     dev_net(in)->ipv6.ip6table_filter);
-}
-
 static unsigned int
 ip6t_local_out_hook(unsigned int hook,
 		   struct sk_buff *skb,
@@ -105,14 +94,14 @@ ip6t_local_out_hook(unsigned int hook,
 
 static struct nf_hook_ops ip6t_ops[] __read_mostly = {
 	{
-		.hook		= ip6t_local_in_hook,
+		.hook		= ip6t_in_hook,
 		.owner		= THIS_MODULE,
 		.pf		= PF_INET6,
 		.hooknum	= NF_INET_LOCAL_IN,
 		.priority	= NF_IP6_PRI_FILTER,
 	},
 	{
-		.hook		= ip6t_forward_hook,
+		.hook		= ip6t_in_hook,
 		.owner		= THIS_MODULE,
 		.pf		= PF_INET6,
 		.hooknum	= NF_INET_FORWARD,

net/netfilter/nf_conntrack_amanda.c

@@ -30,6 +30,7 @@ MODULE_AUTHOR("Brian J. Murrell <netfilter@interlinx.bc.ca>");
 MODULE_DESCRIPTION("Amanda connection tracking module");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("ip_conntrack_amanda");
+MODULE_ALIAS_NFCT_HELPER("amanda");
 
 module_param(master_timeout, uint, 0600);
 MODULE_PARM_DESC(master_timeout, "timeout for the master connection");

net/netfilter/nf_conntrack_core.c

@@ -39,13 +39,13 @@
 #include <net/netfilter/nf_conntrack_extend.h>
 #include <net/netfilter/nf_conntrack_acct.h>
 #include <net/netfilter/nf_nat.h>
+#include <net/netfilter/nf_nat_core.h>
 
 #define NF_CONNTRACK_VERSION	"0.5.0"
 
-unsigned int
-(*nfnetlink_parse_nat_setup_hook)(struct nf_conn *ct,
-				  enum nf_nat_manip_type manip,
-				  struct nlattr *attr) __read_mostly;
+int (*nfnetlink_parse_nat_setup_hook)(struct nf_conn *ct,
+				      enum nf_nat_manip_type manip,
+				      struct nlattr *attr) __read_mostly;
 EXPORT_SYMBOL_GPL(nfnetlink_parse_nat_setup_hook);
 
 DEFINE_SPINLOCK(nf_conntrack_lock);
@@ -181,7 +181,8 @@ destroy_conntrack(struct nf_conntrack *nfct)
 	NF_CT_ASSERT(atomic_read(&nfct->use) == 0);
 	NF_CT_ASSERT(!timer_pending(&ct->timeout));
 
-	nf_conntrack_event(IPCT_DESTROY, ct);
+	if (!test_bit(IPS_DYING_BIT, &ct->status))
+		nf_conntrack_event(IPCT_DESTROY, ct);
 	set_bit(IPS_DYING_BIT, &ct->status);
 
 	/* To make sure we don't get any weird locking issues here:
@@ -586,14 +587,7 @@ init_conntrack(struct net *net,
 		nf_conntrack_get(&ct->master->ct_general);
 		NF_CT_STAT_INC(net, expect_new);
 	} else {
-		struct nf_conntrack_helper *helper;
-
-		helper = __nf_ct_helper_find(&repl_tuple);
-		if (helper) {
-			help = nf_ct_helper_ext_add(ct, GFP_ATOMIC);
-			if (help)
-				rcu_assign_pointer(help->helper, helper);
-		}
+		__nf_ct_try_assign_helper(ct, GFP_ATOMIC);
 		NF_CT_STAT_INC(net, new);
 	}
 
@@ -770,7 +764,6 @@ void nf_conntrack_alter_reply(struct nf_conn *ct,
 			      const struct nf_conntrack_tuple *newreply)
 {
 	struct nf_conn_help *help = nfct_help(ct);
-	struct nf_conntrack_helper *helper;
 
 	/* Should be unconfirmed, so not in hash table yet */
 	NF_CT_ASSERT(!nf_ct_is_confirmed(ct));
@@ -783,23 +776,7 @@ void nf_conntrack_alter_reply(struct nf_conn *ct,
 		return;
 
 	rcu_read_lock();
-	helper = __nf_ct_helper_find(newreply);
-	if (helper == NULL) {
-		if (help)
-			rcu_assign_pointer(help->helper, NULL);
-		goto out;
-	}
-
-	if (help == NULL) {
-		help = nf_ct_helper_ext_add(ct, GFP_ATOMIC);
-		if (help == NULL)
-			goto out;
-	} else {
-		memset(&help->help, 0, sizeof(help->help));
-	}
-
-	rcu_assign_pointer(help->helper, helper);
-out:
+	__nf_ct_try_assign_helper(ct, GFP_ATOMIC);
 	rcu_read_unlock();
 }
 EXPORT_SYMBOL_GPL(nf_conntrack_alter_reply);
@@ -994,8 +971,20 @@ void nf_ct_iterate_cleanup(struct net *net,
 }
 EXPORT_SYMBOL_GPL(nf_ct_iterate_cleanup);
 
+struct __nf_ct_flush_report {
+	u32 pid;
+	int report;
+};
+
 static int kill_all(struct nf_conn *i, void *data)
 {
+	struct __nf_ct_flush_report *fr = (struct __nf_ct_flush_report *)data;
+
+	/* get_next_corpse sets the dying bit for us */
+	nf_conntrack_event_report(IPCT_DESTROY,
+				  i,
+				  fr->pid,
+				  fr->report);
 	return 1;
 }
 
@@ -1009,9 +998,13 @@ void nf_ct_free_hashtable(struct hlist_head *hash, int vmalloced, unsigned int s
 }
 EXPORT_SYMBOL_GPL(nf_ct_free_hashtable);
 
-void nf_conntrack_flush(struct net *net)
+void nf_conntrack_flush(struct net *net, u32 pid, int report)
 {
-	nf_ct_iterate_cleanup(net, kill_all, NULL);
+	struct __nf_ct_flush_report fr = {
+		.pid 	= pid,
+		.report = report,
+	};
+	nf_ct_iterate_cleanup(net, kill_all, &fr);
 }
 EXPORT_SYMBOL_GPL(nf_conntrack_flush);
 
@@ -1027,7 +1020,7 @@ static void nf_conntrack_cleanup_net(struct net *net)
 	nf_ct_event_cache_flush(net);
 	nf_conntrack_ecache_fini(net);
  i_see_dead_people:
-	nf_conntrack_flush(net);
+	nf_conntrack_flush(net, 0, 0);
 	if (atomic_read(&net->ct.count) != 0) {
 		schedule();
 		goto i_see_dead_people;

net/netfilter/nf_conntrack_ecache.c

@@ -35,9 +35,17 @@ static inline void
 __nf_ct_deliver_cached_events(struct nf_conntrack_ecache *ecache)
 {
 	if (nf_ct_is_confirmed(ecache->ct) && !nf_ct_is_dying(ecache->ct)
-	    && ecache->events)
-		atomic_notifier_call_chain(&nf_conntrack_chain, ecache->events,
-				    ecache->ct);
+	    && ecache->events) {
+		struct nf_ct_event item = {
+			.ct 	= ecache->ct,
+			.pid	= 0,
+			.report	= 0
+		};
+
+		atomic_notifier_call_chain(&nf_conntrack_chain,
+					   ecache->events,
+					   &item);
+	}
 
 	ecache->events = 0;
 	nf_ct_put(ecache->ct);

net/netfilter/nf_conntrack_expect.c

@@ -362,7 +362,7 @@ static inline int refresh_timer(struct nf_conntrack_expect *i)
 	return 1;
 }
 
-int nf_ct_expect_related(struct nf_conntrack_expect *expect)
+static inline int __nf_ct_expect_check(struct nf_conntrack_expect *expect)
 {
 	const struct nf_conntrack_expect_policy *p;
 	struct nf_conntrack_expect *i;
@@ -371,11 +371,8 @@ int nf_ct_expect_related(struct nf_conntrack_expect *expect)
 	struct net *net = nf_ct_exp_net(expect);
 	struct hlist_node *n;
 	unsigned int h;
-	int ret;
-
-	NF_CT_ASSERT(master_help);
+	int ret = 0;
 
-	spin_lock_bh(&nf_conntrack_lock);
 	if (!master_help->helper) {
 		ret = -ESHUTDOWN;
 		goto out;
@@ -409,18 +406,50 @@ int nf_ct_expect_related(struct nf_conntrack_expect *expect)
 			printk(KERN_WARNING
 			       "nf_conntrack: expectation table full\n");
 		ret = -EMFILE;
-		goto out;
 	}
+out:
+	return ret;
+}
+
+int nf_ct_expect_related(struct nf_conntrack_expect *expect)
+{
+	int ret;
+
+	spin_lock_bh(&nf_conntrack_lock);
+	ret = __nf_ct_expect_check(expect);
+	if (ret < 0)
+		goto out;
 
 	nf_ct_expect_insert(expect);
+	atomic_inc(&expect->use);
+	spin_unlock_bh(&nf_conntrack_lock);
 	nf_ct_expect_event(IPEXP_NEW, expect);
-	ret = 0;
+	nf_ct_expect_put(expect);
+	return ret;
 out:
 	spin_unlock_bh(&nf_conntrack_lock);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(nf_ct_expect_related);
 
+int nf_ct_expect_related_report(struct nf_conntrack_expect *expect, 
+				u32 pid, int report)
+{
+	int ret;
+
+	spin_lock_bh(&nf_conntrack_lock);
+	ret = __nf_ct_expect_check(expect);
+	if (ret < 0)
+		goto out;
+	nf_ct_expect_insert(expect);
+out:
+	spin_unlock_bh(&nf_conntrack_lock);
+	if (ret == 0)
+		nf_ct_expect_event_report(IPEXP_NEW, expect, pid, report);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(nf_ct_expect_related_report);
+
 #ifdef CONFIG_PROC_FS
 struct ct_expect_iter_state {
 	struct seq_net_private p;

net/netfilter/nf_conntrack_ftp.c

@@ -29,6 +29,7 @@ MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Rusty Russell <rusty@rustcorp.com.au>");
 MODULE_DESCRIPTION("ftp connection tracking helper");
 MODULE_ALIAS("ip_conntrack_ftp");
+MODULE_ALIAS_NFCT_HELPER("ftp");
 
 /* This is slow, but it's simple. --RR */
 static char *ftp_buffer;
@@ -357,7 +358,7 @@ static int help(struct sk_buff *skb,
 	int ret;
 	u32 seq;
 	int dir = CTINFO2DIR(ctinfo);
-	unsigned int matchlen, matchoff;
+	unsigned int uninitialized_var(matchlen), uninitialized_var(matchoff);
 	struct nf_ct_ftp_master *ct_ftp_info = &nfct_help(ct)->help.ct_ftp_info;
 	struct nf_conntrack_expect *exp;
 	union nf_inet_addr *daddr;
@@ -427,10 +428,8 @@ static int help(struct sk_buff *skb,
 		   connection tracking, not packet filtering.
 		   However, it is necessary for accurate tracking in
 		   this case. */
-		if (net_ratelimit())
-			printk("conntrack_ftp: partial %s %u+%u\n",
-			       search[dir][i].pattern,
-			       ntohl(th->seq), datalen);
+		pr_debug("conntrack_ftp: partial %s %u+%u\n",
+			 search[dir][i].pattern,  ntohl(th->seq), datalen);
 		ret = NF_DROP;
 		goto out;
 	} else if (found == 0) { /* No match */

net/netfilter/nf_conntrack_h323_main.c

@@ -1827,3 +1827,4 @@ MODULE_AUTHOR("Jing Min Zhao <zhaojingmin@users.sourceforge.net>");
 MODULE_DESCRIPTION("H.323 connection tracking helper");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("ip_conntrack_h323");
+MODULE_ALIAS_NFCT_HELPER("h323");

net/netfilter/nf_conntrack_helper.c

@@ -45,7 +45,7 @@ static unsigned int helper_hash(const struct nf_conntrack_tuple *tuple)
 		(__force __u16)tuple->src.u.all) % nf_ct_helper_hsize;
 }
 
-struct nf_conntrack_helper *
+static struct nf_conntrack_helper *
 __nf_ct_helper_find(const struct nf_conntrack_tuple *tuple)
 {
 	struct nf_conntrack_helper *helper;
@@ -63,7 +63,6 @@ __nf_ct_helper_find(const struct nf_conntrack_tuple *tuple)
 	}
 	return NULL;
 }
-EXPORT_SYMBOL_GPL(__nf_ct_helper_find);
 
 struct nf_conntrack_helper *
 __nf_conntrack_helper_find_byname(const char *name)
@@ -95,6 +94,35 @@ struct nf_conn_help *nf_ct_helper_ext_add(struct nf_conn *ct, gfp_t gfp)
 }
 EXPORT_SYMBOL_GPL(nf_ct_helper_ext_add);
 
+int __nf_ct_try_assign_helper(struct nf_conn *ct, gfp_t flags)
+{
+	int ret = 0;
+	struct nf_conntrack_helper *helper;
+	struct nf_conn_help *help = nfct_help(ct);
+
+	helper = __nf_ct_helper_find(&ct->tuplehash[IP_CT_DIR_REPLY].tuple);
+	if (helper == NULL) {
+		if (help)
+			rcu_assign_pointer(help->helper, NULL);
+		goto out;
+	}
+
+	if (help == NULL) {
+		help = nf_ct_helper_ext_add(ct, flags);
+		if (help == NULL) {
+			ret = -ENOMEM;
+			goto out;
+		}
+	} else {
+		memset(&help->help, 0, sizeof(help->help));
+	}
+
+	rcu_assign_pointer(help->helper, helper);
+out:
+	return ret;
+}
+EXPORT_SYMBOL_GPL(__nf_ct_try_assign_helper);
+
 static inline int unhelp(struct nf_conntrack_tuple_hash *i,
 			 const struct nf_conntrack_helper *me)
 {

net/netfilter/nf_conntrack_irc.c

@@ -41,6 +41,7 @@ MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
 MODULE_DESCRIPTION("IRC (DCC) connection tracking helper");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("ip_conntrack_irc");
+MODULE_ALIAS_NFCT_HELPER("irc");
 
 module_param_array(ports, ushort, &ports_c, 0400);
 MODULE_PARM_DESC(ports, "port numbers of IRC servers");

net/netfilter/nf_conntrack_netbios_ns.c

@@ -37,6 +37,7 @@ MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
 MODULE_DESCRIPTION("NetBIOS name service broadcast connection tracking helper");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("ip_conntrack_netbios_ns");
+MODULE_ALIAS_NFCT_HELPER("netbios_ns");
 
 static unsigned int timeout __read_mostly = 3;
 module_param(timeout, uint, 0400);

net/netfilter/nf_conntrack_netlink.c

@@ -105,16 +105,14 @@ ctnetlink_dump_tuples(struct sk_buff *skb,
 	struct nf_conntrack_l3proto *l3proto;
 	struct nf_conntrack_l4proto *l4proto;
 
-	l3proto = nf_ct_l3proto_find_get(tuple->src.l3num);
+	l3proto = __nf_ct_l3proto_find(tuple->src.l3num);
 	ret = ctnetlink_dump_tuples_ip(skb, tuple, l3proto);
-	nf_ct_l3proto_put(l3proto);
 
 	if (unlikely(ret < 0))
 		return ret;
 
-	l4proto = nf_ct_l4proto_find_get(tuple->src.l3num, tuple->dst.protonum);
+	l4proto = __nf_ct_l4proto_find(tuple->src.l3num, tuple->dst.protonum);
 	ret = ctnetlink_dump_tuples_proto(skb, tuple, l4proto);
-	nf_ct_l4proto_put(l4proto);
 
 	return ret;
 }
@@ -151,11 +149,9 @@ ctnetlink_dump_protoinfo(struct sk_buff *skb, const struct nf_conn *ct)
 	struct nlattr *nest_proto;
 	int ret;
 
-	l4proto = nf_ct_l4proto_find_get(nf_ct_l3num(ct), nf_ct_protonum(ct));
-	if (!l4proto->to_nlattr) {
-		nf_ct_l4proto_put(l4proto);
+	l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct));
+	if (!l4proto->to_nlattr)
 		return 0;
-	}
 
 	nest_proto = nla_nest_start(skb, CTA_PROTOINFO | NLA_F_NESTED);
 	if (!nest_proto)
@@ -163,14 +159,11 @@ ctnetlink_dump_protoinfo(struct sk_buff *skb, const struct nf_conn *ct)
 
 	ret = l4proto->to_nlattr(skb, nest_proto, ct);
 
-	nf_ct_l4proto_put(l4proto);
-
 	nla_nest_end(skb, nest_proto);
 
 	return ret;
 
 nla_put_failure:
-	nf_ct_l4proto_put(l4proto);
 	return -1;
 }
 
@@ -184,7 +177,6 @@ ctnetlink_dump_helpinfo(struct sk_buff *skb, const struct nf_conn *ct)
 	if (!help)
 		return 0;
 
-	rcu_read_lock();
 	helper = rcu_dereference(help->helper);
 	if (!helper)
 		goto out;
@@ -199,11 +191,9 @@ ctnetlink_dump_helpinfo(struct sk_buff *skb, const struct nf_conn *ct)
 
 	nla_nest_end(skb, nest_helper);
 out:
-	rcu_read_unlock();
 	return 0;
 
 nla_put_failure:
-	rcu_read_unlock();
 	return -1;
 }
 
@@ -420,7 +410,8 @@ static int ctnetlink_conntrack_event(struct notifier_block *this,
 	struct nlmsghdr *nlh;
 	struct nfgenmsg *nfmsg;
 	struct nlattr *nest_parms;
-	struct nf_conn *ct = (struct nf_conn *)ptr;
+	struct nf_ct_event *item = (struct nf_ct_event *)ptr;
+	struct nf_conn *ct = item->ct;
 	struct sk_buff *skb;
 	unsigned int type;
 	sk_buff_data_t b;
@@ -453,7 +444,7 @@ static int ctnetlink_conntrack_event(struct notifier_block *this,
 	b = skb->tail;
 
 	type |= NFNL_SUBSYS_CTNETLINK << 8;
-	nlh   = NLMSG_PUT(skb, 0, 0, type, sizeof(struct nfgenmsg));
+	nlh   = NLMSG_PUT(skb, item->pid, 0, type, sizeof(struct nfgenmsg));
 	nfmsg = NLMSG_DATA(nlh);
 
 	nlh->nlmsg_flags    = flags;
@@ -461,6 +452,7 @@ static int ctnetlink_conntrack_event(struct notifier_block *this,
 	nfmsg->version	= NFNETLINK_V0;
 	nfmsg->res_id	= 0;
 
+	rcu_read_lock();
 	nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED);
 	if (!nest_parms)
 		goto nla_put_failure;
@@ -517,13 +509,15 @@ static int ctnetlink_conntrack_event(struct notifier_block *this,
 	    && ctnetlink_dump_mark(skb, ct) < 0)
 		goto nla_put_failure;
 #endif
+	rcu_read_unlock();
 
 	nlh->nlmsg_len = skb->tail - b;
-	nfnetlink_send(skb, 0, group, 0);
+	nfnetlink_send(skb, item->pid, group, item->report);
 	return NOTIFY_DONE;
 
-nlmsg_failure:
 nla_put_failure:
+	rcu_read_unlock();
+nlmsg_failure:
 	kfree_skb(skb);
 	return NOTIFY_DONE;
 }
@@ -729,7 +723,9 @@ ctnetlink_del_conntrack(struct sock *ctnl, struct sk_buff *skb,
 		err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_REPLY, u3);
 	else {
 		/* Flush the whole table */
-		nf_conntrack_flush(&init_net);
+		nf_conntrack_flush(&init_net, 
+				   NETLINK_CB(skb).pid, 
+				   nlmsg_report(nlh));
 		return 0;
 	}
 
@@ -750,6 +746,14 @@ ctnetlink_del_conntrack(struct sock *ctnl, struct sk_buff *skb,
 		}
 	}
 
+	nf_conntrack_event_report(IPCT_DESTROY,
+				  ct,
+				  NETLINK_CB(skb).pid,
+				  nlmsg_report(nlh));
+
+	/* death_by_timeout would report the event again */
+	set_bit(IPS_DYING_BIT, &ct->status);
+
 	nf_ct_kill(ct);
 	nf_ct_put(ct);
 
@@ -795,8 +799,10 @@ ctnetlink_get_conntrack(struct sock *ctnl, struct sk_buff *skb,
 		return -ENOMEM;
 	}
 
+	rcu_read_lock();
 	err = ctnetlink_fill_info(skb2, NETLINK_CB(skb).pid, nlh->nlmsg_seq,
 				  IPCTNL_MSG_CT_NEW, 1, ct);
+	rcu_read_unlock();
 	nf_ct_put(ct);
 	if (err <= 0)
 		goto free;
@@ -922,8 +928,22 @@ ctnetlink_change_helper(struct nf_conn *ct, struct nlattr *cda[])
 	}
 
 	helper = __nf_conntrack_helper_find_byname(helpname);
-	if (helper == NULL)
+	if (helper == NULL) {
+#ifdef CONFIG_MODULES
+		spin_unlock_bh(&nf_conntrack_lock);
+
+		if (request_module("nfct-helper-%s", helpname) < 0) {
+			spin_lock_bh(&nf_conntrack_lock);
+			return -EOPNOTSUPP;
+		}
+
+		spin_lock_bh(&nf_conntrack_lock);
+		helper = __nf_conntrack_helper_find_byname(helpname);
+		if (helper)
+			return -EAGAIN;
+#endif
 		return -EOPNOTSUPP;
+	}
 
 	if (help) {
 		if (help->helper == helper)
@@ -1079,15 +1099,38 @@ ctnetlink_change_conntrack(struct nf_conn *ct, struct nlattr *cda[])
 	return 0;
 }
 
+static inline void
+ctnetlink_event_report(struct nf_conn *ct, u32 pid, int report)
+{
+	unsigned int events = 0;
+
+	if (test_bit(IPS_EXPECTED_BIT, &ct->status))
+		events |= IPCT_RELATED;
+	else
+		events |= IPCT_NEW;
+
+	nf_conntrack_event_report(IPCT_STATUS |
+				  IPCT_HELPER |
+				  IPCT_REFRESH |
+				  IPCT_PROTOINFO |
+				  IPCT_NATSEQADJ |
+				  IPCT_MARK |
+				  events,
+				  ct,
+				  pid,
+				  report);
+}
+
 static int
 ctnetlink_create_conntrack(struct nlattr *cda[],
 			   struct nf_conntrack_tuple *otuple,
 			   struct nf_conntrack_tuple *rtuple,
-			   struct nf_conn *master_ct)
+			   struct nf_conn *master_ct,
+			   u32 pid,
+			   int report)
 {
 	struct nf_conn *ct;
 	int err = -EINVAL;
-	struct nf_conn_help *help;
 	struct nf_conntrack_helper *helper;
 
 	ct = nf_conntrack_alloc(&init_net, otuple, rtuple, GFP_ATOMIC);
@@ -1102,16 +1145,55 @@ ctnetlink_create_conntrack(struct nlattr *cda[],
 	ct->status |= IPS_CONFIRMED;
 
 	rcu_read_lock();
-	helper = __nf_ct_helper_find(rtuple);
-	if (helper) {
-		help = nf_ct_helper_ext_add(ct, GFP_ATOMIC);
-		if (help == NULL) {
+ 	if (cda[CTA_HELP]) {
+ 		char *helpname;
+ 
+ 		err = ctnetlink_parse_help(cda[CTA_HELP], &helpname);
+ 		if (err < 0) {
+			rcu_read_unlock();
+			goto err;
+		}
+
+		helper = __nf_conntrack_helper_find_byname(helpname);
+		if (helper == NULL) {
+			rcu_read_unlock();
+#ifdef CONFIG_MODULES
+			if (request_module("nfct-helper-%s", helpname) < 0) {
+				err = -EOPNOTSUPP;
+				goto err;
+			}
+
+			rcu_read_lock();
+			helper = __nf_conntrack_helper_find_byname(helpname);
+			if (helper) {
+				rcu_read_unlock();
+				err = -EAGAIN;
+				goto err;
+			}
+			rcu_read_unlock();
+#endif
+			err = -EOPNOTSUPP;
+			goto err;
+		} else {
+			struct nf_conn_help *help;
+
+			help = nf_ct_helper_ext_add(ct, GFP_ATOMIC);
+			if (help == NULL) {
+				rcu_read_unlock();
+				err = -ENOMEM;
+				goto err;
+			}
+
+			/* not in hash table yet so not strictly necessary */
+			rcu_assign_pointer(help->helper, helper);
+		}
+	} else {
+		/* try an implicit helper assignation */
+		err = __nf_ct_try_assign_helper(ct, GFP_ATOMIC);
+		if (err < 0) {
 			rcu_read_unlock();
-			err = -ENOMEM;
 			goto err;
 		}
-		/* not in hash table yet so not strictly necessary */
-		rcu_assign_pointer(help->helper, helper);
 	}
 
 	if (cda[CTA_STATUS]) {
@@ -1151,9 +1233,12 @@ ctnetlink_create_conntrack(struct nlattr *cda[],
 		ct->master = master_ct;
 	}
 
+	nf_conntrack_get(&ct->ct_general);
 	add_timer(&ct->timeout);
 	nf_conntrack_hash_insert(ct);
 	rcu_read_unlock();
+	ctnetlink_event_report(ct, pid, report);
+	nf_ct_put(ct);
 
 	return 0;
 
@@ -1209,7 +1294,7 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb,
 				goto out_unlock;
 			}
 			master_ct = nf_ct_tuplehash_to_ctrack(master_h);
-			atomic_inc(&master_ct->ct_general.use);
+			nf_conntrack_get(&master_ct->ct_general);
 		}
 
 		err = -ENOENT;
@@ -1217,9 +1302,10 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb,
 			err = ctnetlink_create_conntrack(cda,
 							 &otuple,
 							 &rtuple,
-							 master_ct);
+							 master_ct,
+							 NETLINK_CB(skb).pid,
+							 nlmsg_report(nlh));
 		spin_unlock_bh(&nf_conntrack_lock);
-
 		if (err < 0 && master_ct)
 			nf_ct_put(master_ct);
 
@@ -1231,6 +1317,8 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb,
 	 * so there's no need to increase the refcount */
 	err = -EEXIST;
 	if (!(nlh->nlmsg_flags & NLM_F_EXCL)) {
+		struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(h);
+
 		/* we only allow nat config for new conntracks */
 		if (cda[CTA_NAT_SRC] || cda[CTA_NAT_DST]) {
 			err = -EOPNOTSUPP;
@@ -1241,8 +1329,19 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb,
 			err = -EOPNOTSUPP;
 			goto out_unlock;
 		}
-		err = ctnetlink_change_conntrack(nf_ct_tuplehash_to_ctrack(h),
-						 cda);
+
+		err = ctnetlink_change_conntrack(ct, cda);
+		if (err == 0) {
+			nf_conntrack_get(&ct->ct_general);
+			spin_unlock_bh(&nf_conntrack_lock);
+			ctnetlink_event_report(ct,
+					       NETLINK_CB(skb).pid,
+					       nlmsg_report(nlh));
+			nf_ct_put(ct);
+		} else
+			spin_unlock_bh(&nf_conntrack_lock);
+
+		return err;
 	}
 
 out_unlock:
@@ -1293,16 +1392,14 @@ ctnetlink_exp_dump_mask(struct sk_buff *skb,
 	if (!nest_parms)
 		goto nla_put_failure;
 
-	l3proto = nf_ct_l3proto_find_get(tuple->src.l3num);
+	l3proto = __nf_ct_l3proto_find(tuple->src.l3num);
 	ret = ctnetlink_dump_tuples_ip(skb, &m, l3proto);
-	nf_ct_l3proto_put(l3proto);
 
 	if (unlikely(ret < 0))
 		goto nla_put_failure;
 
-	l4proto = nf_ct_l4proto_find_get(tuple->src.l3num, tuple->dst.protonum);
+	l4proto = __nf_ct_l4proto_find(tuple->src.l3num, tuple->dst.protonum);
 	ret = ctnetlink_dump_tuples_proto(skb, &m, l4proto);
-	nf_ct_l4proto_put(l4proto);
 	if (unlikely(ret < 0))
 		goto nla_put_failure;
 
@@ -1379,7 +1476,8 @@ static int ctnetlink_expect_event(struct notifier_block *this,
 {
 	struct nlmsghdr *nlh;
 	struct nfgenmsg *nfmsg;
-	struct nf_conntrack_expect *exp = (struct nf_conntrack_expect *)ptr;
+	struct nf_exp_event *item = (struct nf_exp_event *)ptr;
+	struct nf_conntrack_expect *exp = item->exp;
 	struct sk_buff *skb;
 	unsigned int type;
 	sk_buff_data_t b;
@@ -1401,7 +1499,7 @@ static int ctnetlink_expect_event(struct notifier_block *this,
 	b = skb->tail;
 
 	type |= NFNL_SUBSYS_CTNETLINK_EXP << 8;
-	nlh   = NLMSG_PUT(skb, 0, 0, type, sizeof(struct nfgenmsg));
+	nlh   = NLMSG_PUT(skb, item->pid, 0, type, sizeof(struct nfgenmsg));
 	nfmsg = NLMSG_DATA(nlh);
 
 	nlh->nlmsg_flags    = flags;
@@ -1409,15 +1507,18 @@ static int ctnetlink_expect_event(struct notifier_block *this,
 	nfmsg->version	    = NFNETLINK_V0;
 	nfmsg->res_id	    = 0;
 
+	rcu_read_lock();
 	if (ctnetlink_exp_dump_expect(skb, exp) < 0)
 		goto nla_put_failure;
+	rcu_read_unlock();
 
 	nlh->nlmsg_len = skb->tail - b;
-	nfnetlink_send(skb, 0, NFNLGRP_CONNTRACK_EXP_NEW, 0);
+	nfnetlink_send(skb, item->pid, NFNLGRP_CONNTRACK_EXP_NEW, item->report);
 	return NOTIFY_DONE;
 
-nlmsg_failure:
 nla_put_failure:
+	rcu_read_unlock();
+nlmsg_failure:
 	kfree_skb(skb);
 	return NOTIFY_DONE;
 }
@@ -1521,9 +1622,11 @@ ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb,
 	if (!skb2)
 		goto out;
 
+	rcu_read_lock();
 	err = ctnetlink_exp_fill_info(skb2, NETLINK_CB(skb).pid,
 				      nlh->nlmsg_seq, IPCTNL_MSG_EXP_NEW,
 				      1, exp);
+	rcu_read_unlock();
 	if (err <= 0)
 		goto free;
 
@@ -1624,7 +1727,7 @@ ctnetlink_change_expect(struct nf_conntrack_expect *x, struct nlattr *cda[])
 }
 
 static int
-ctnetlink_create_expect(struct nlattr *cda[], u_int8_t u3)
+ctnetlink_create_expect(struct nlattr *cda[], u_int8_t u3, u32 pid, int report)
 {
 	struct nf_conntrack_tuple tuple, mask, master_tuple;
 	struct nf_conntrack_tuple_hash *h = NULL;
@@ -1653,7 +1756,7 @@ ctnetlink_create_expect(struct nlattr *cda[], u_int8_t u3)
 
 	if (!help || !help->helper) {
 		/* such conntrack hasn't got any helper, abort */
-		err = -EINVAL;
+		err = -EOPNOTSUPP;
 		goto out;
 	}
 
@@ -1671,7 +1774,7 @@ ctnetlink_create_expect(struct nlattr *cda[], u_int8_t u3)
 	memcpy(&exp->mask.src.u3, &mask.src.u3, sizeof(exp->mask.src.u3));
 	exp->mask.src.u.all = mask.src.u.all;
 
-	err = nf_ct_expect_related(exp);
+	err = nf_ct_expect_related_report(exp, pid, report);
 	nf_ct_expect_put(exp);
 
 out:
@@ -1704,8 +1807,12 @@ ctnetlink_new_expect(struct sock *ctnl, struct sk_buff *skb,
 	if (!exp) {
 		spin_unlock_bh(&nf_conntrack_lock);
 		err = -ENOENT;
-		if (nlh->nlmsg_flags & NLM_F_CREATE)
-			err = ctnetlink_create_expect(cda, u3);
+		if (nlh->nlmsg_flags & NLM_F_CREATE) {
+			err = ctnetlink_create_expect(cda,
+						      u3,
+						      NETLINK_CB(skb).pid,
+						      nlmsg_report(nlh));
+		}
 		return err;
 	}
 

net/netfilter/nf_conntrack_pptp.c

@@ -37,6 +37,7 @@ MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
 MODULE_DESCRIPTION("Netfilter connection tracking helper module for PPTP");
 MODULE_ALIAS("ip_conntrack_pptp");
+MODULE_ALIAS_NFCT_HELPER("pptp");
 
 static DEFINE_SPINLOCK(nf_pptp_lock);
 

net/netfilter/nf_conntrack_proto_gre.c

@@ -341,7 +341,7 @@ static int __init nf_ct_proto_gre_init(void)
 	return rv;
 }
 
-static void nf_ct_proto_gre_fini(void)
+static void __exit nf_ct_proto_gre_fini(void)
 {
 	nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_gre4);
 	unregister_pernet_gen_subsys(proto_gre_net_id, &proto_gre_net_ops);

net/netfilter/nf_conntrack_proto_sctp.c

@@ -317,7 +317,7 @@ static int sctp_packet(struct nf_conn *ct,
 		goto out;
 	}
 
-	old_state = new_state = SCTP_CONNTRACK_MAX;
+	old_state = new_state = SCTP_CONNTRACK_NONE;
 	write_lock_bh(&sctp_lock);
 	for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) {
 		/* Special cases of Verification tag check (Sec 8.5.1) */

net/netfilter/nf_conntrack_sane.c

@@ -30,6 +30,7 @@
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Michal Schmidt <mschmidt@redhat.com>");
 MODULE_DESCRIPTION("SANE connection tracking helper");
+MODULE_ALIAS_NFCT_HELPER("sane");
 
 static char *sane_buffer;
 

net/netfilter/nf_conntrack_sip.c

@@ -28,6 +28,7 @@ MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Christian Hentschel <chentschel@arnet.com.ar>");
 MODULE_DESCRIPTION("SIP connection tracking helper");
 MODULE_ALIAS("ip_conntrack_sip");
+MODULE_ALIAS_NFCT_HELPER("sip");
 
 #define MAX_PORTS	8
 static unsigned short ports[MAX_PORTS];

net/netfilter/nf_conntrack_tftp.c

@@ -22,6 +22,7 @@ MODULE_AUTHOR("Magnus Boden <mb@ozaba.mine.nu>");
 MODULE_DESCRIPTION("TFTP connection tracking helper");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("ip_conntrack_tftp");
+MODULE_ALIAS_NFCT_HELPER("tftp");
 
 #define MAX_PORTS 8
 static unsigned short ports[MAX_PORTS];

net/netfilter/nfnetlink_log.c

@@ -30,6 +30,7 @@
 #include <linux/random.h>
 #include <net/sock.h>
 #include <net/netfilter/nf_log.h>
+#include <net/netfilter/nfnetlink_log.h>
 
 #include <asm/atomic.h>
 
@@ -533,7 +534,7 @@ static struct nf_loginfo default_loginfo = {
 };
 
 /* log handler for internal netfilter logging api */
-static void
+void
 nfulnl_log_packet(u_int8_t pf,
 		  unsigned int hooknum,
 		  const struct sk_buff *skb,
@@ -648,6 +649,7 @@ nfulnl_log_packet(u_int8_t pf,
 	/* FIXME: statistics */
 	goto unlock_and_release;
 }
+EXPORT_SYMBOL_GPL(nfulnl_log_packet);
 
 static int
 nfulnl_rcv_nl_event(struct notifier_block *this,

net/netfilter/xt_NFLOG.c

@@ -13,6 +13,7 @@
 #include <linux/netfilter/x_tables.h>
 #include <linux/netfilter/xt_NFLOG.h>
 #include <net/netfilter/nf_log.h>
+#include <net/netfilter/nfnetlink_log.h>
 
 MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
 MODULE_DESCRIPTION("Xtables: packet logging to netlink using NFLOG");
@@ -31,8 +32,8 @@ nflog_tg(struct sk_buff *skb, const struct xt_target_param *par)
 	li.u.ulog.group	     = info->group;
 	li.u.ulog.qthreshold = info->threshold;
 
-	nf_log_packet(par->family, par->hooknum, skb, par->in,
-	              par->out, &li, "%s", info->prefix);
+	nfulnl_log_packet(par->family, par->hooknum, skb, par->in,
+			  par->out, &li, info->prefix);
 	return XT_CONTINUE;
 }
 

net/netfilter/xt_recent.c

@@ -72,9 +72,6 @@ struct recent_entry {
 struct recent_table {
 	struct list_head	list;
 	char			name[XT_RECENT_NAME_LEN];
-#ifdef CONFIG_PROC_FS
-	struct proc_dir_entry	*proc_old, *proc;
-#endif
 	unsigned int		refcnt;
 	unsigned int		entries;
 	struct list_head	lru_list;
@@ -284,6 +281,9 @@ static bool recent_mt_check(const struct xt_mtchk_param *par)
 {
 	const struct xt_recent_mtinfo *info = par->matchinfo;
 	struct recent_table *t;
+#ifdef CONFIG_PROC_FS
+	struct proc_dir_entry *pde;
+#endif
 	unsigned i;
 	bool ret = false;
 
@@ -318,25 +318,25 @@ static bool recent_mt_check(const struct xt_mtchk_param *par)
 	for (i = 0; i < ip_list_hash_size; i++)
 		INIT_LIST_HEAD(&t->iphash[i]);
 #ifdef CONFIG_PROC_FS
-	t->proc = proc_create_data(t->name, ip_list_perms, recent_proc_dir,
+	pde = proc_create_data(t->name, ip_list_perms, recent_proc_dir,
 		  &recent_mt_fops, t);
-	if (t->proc == NULL) {
+	if (pde == NULL) {
 		kfree(t);
 		goto out;
 	}
+	pde->uid = ip_list_uid;
+	pde->gid = ip_list_gid;
 #ifdef CONFIG_NETFILTER_XT_MATCH_RECENT_PROC_COMPAT
-	t->proc_old = proc_create_data(t->name, ip_list_perms, proc_old_dir,
+	pde = proc_create_data(t->name, ip_list_perms, proc_old_dir,
 		      &recent_old_fops, t);
-	if (t->proc_old == NULL) {
+	if (pde == NULL) {
 		remove_proc_entry(t->name, proc_old_dir);
 		kfree(t);
 		goto out;
 	}
-	t->proc_old->uid   = ip_list_uid;
-	t->proc_old->gid   = ip_list_gid;
+	pde->uid = ip_list_uid;
+	pde->gid = ip_list_gid;
 #endif
-	t->proc->uid       = ip_list_uid;
-	t->proc->gid       = ip_list_gid;
 #endif
 	spin_lock_bh(&recent_lock);
 	list_add_tail(&t->list, &tables);