X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=net%2Fipv4%2Ffib_frontend.c;h=86ff2711fc957977f179da841a0ffc3b698e75ac;hb=7524d7d6de5d5d3f081de8cf5479819fad339661;hp=97abf934d1852931d36a18f8027d1597fa66e135;hpb=5b825ed22b02691e39774e8b2a077d1807969ec7;p=linux-2.6

diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 97abf934d1..86ff2711fc 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -47,59 +47,65 @@
 #include <net/ip_fib.h>
 #include <net/rtnetlink.h>
 
-#define FFprint(a...) printk(KERN_DEBUG a)
+#ifndef CONFIG_IP_MULTIPLE_TABLES
 
-static struct sock *fibnl;
+static int __net_init fib4_rules_init(struct net *net)
+{
+	struct fib_table *local_table, *main_table;
 
-#ifndef CONFIG_IP_MULTIPLE_TABLES
+	local_table = fib_hash_table(RT_TABLE_LOCAL);
+	if (local_table == NULL)
+		return -ENOMEM;
 
-struct fib_table *ip_fib_local_table;
-struct fib_table *ip_fib_main_table;
+	main_table  = fib_hash_table(RT_TABLE_MAIN);
+	if (main_table == NULL)
+		goto fail;
 
-#define FIB_TABLE_HASHSZ 1
-static struct hlist_head fib_table_hash[FIB_TABLE_HASHSZ];
+	hlist_add_head_rcu(&local_table->tb_hlist,
+				&net->ipv4.fib_table_hash[TABLE_LOCAL_INDEX]);
+	hlist_add_head_rcu(&main_table->tb_hlist,
+				&net->ipv4.fib_table_hash[TABLE_MAIN_INDEX]);
+	return 0;
 
-static void __init fib4_rules_init(void)
-{
-	ip_fib_local_table = fib_hash_init(RT_TABLE_LOCAL);
-	hlist_add_head_rcu(&ip_fib_local_table->tb_hlist, &fib_table_hash[0]);
-	ip_fib_main_table  = fib_hash_init(RT_TABLE_MAIN);
-	hlist_add_head_rcu(&ip_fib_main_table->tb_hlist, &fib_table_hash[0]);
+fail:
+	kfree(local_table);
+	return -ENOMEM;
 }
 #else
 
-#define FIB_TABLE_HASHSZ 256
-static struct hlist_head fib_table_hash[FIB_TABLE_HASHSZ];
-
-struct fib_table *fib_new_table(u32 id)
+struct fib_table *fib_new_table(struct net *net, u32 id)
 {
 	struct fib_table *tb;
 	unsigned int h;
 
 	if (id == 0)
 		id = RT_TABLE_MAIN;
-	tb = fib_get_table(id);
+	tb = fib_get_table(net, id);
 	if (tb)
 		return tb;
-	tb = fib_hash_init(id);
+
+	tb = fib_hash_table(id);
 	if (!tb)
 		return NULL;
 	h = id & (FIB_TABLE_HASHSZ - 1);
-	hlist_add_head_rcu(&tb->tb_hlist, &fib_table_hash[h]);
+	hlist_add_head_rcu(&tb->tb_hlist, &net->ipv4.fib_table_hash[h]);
 	return tb;
 }
 
-struct fib_table *fib_get_table(u32 id)
+struct fib_table *fib_get_table(struct net *net, u32 id)
 {
 	struct fib_table *tb;
 	struct hlist_node *node;
+	struct hlist_head *head;
 	unsigned int h;
 
 	if (id == 0)
 		id = RT_TABLE_MAIN;
 	h = id & (FIB_TABLE_HASHSZ - 1);
+
 	rcu_read_lock();
-	hlist_for_each_entry_rcu(tb, node, &fib_table_hash[h], tb_hlist) {
+	head = &net->ipv4.fib_table_hash[h];
+	hlist_for_each_entry_rcu(tb, node, head, tb_hlist) {
 		if (tb->tb_id == id) {
 			rcu_read_unlock();
 			return tb;
@@ -110,15 +116,32 @@ struct fib_table *fib_get_table(u32 id)
 }
 #endif /* CONFIG_IP_MULTIPLE_TABLES */
 
-static void fib_flush(void)
+void fib_select_default(struct net *net,
+			const struct flowi *flp, struct fib_result *res)
+{
+	struct fib_table *tb;
+	int table = RT_TABLE_MAIN;
+#ifdef CONFIG_IP_MULTIPLE_TABLES
+	if (res->r == NULL || res->r->action != FR_ACT_TO_TBL)
+		return;
+	table = res->r->table;
+#endif
+	tb = fib_get_table(net, table);
+	if (FIB_RES_GW(*res) && FIB_RES_NH(*res).nh_scope == RT_SCOPE_LINK)
+		tb->tb_select_default(tb, flp, res);
+}
+
+static void fib_flush(struct net *net)
 {
 	int flushed = 0;
 	struct fib_table *tb;
 	struct hlist_node *node;
+	struct hlist_head *head;
 	unsigned int h;
 
 	for (h = 0; h < FIB_TABLE_HASHSZ; h++) {
-		hlist_for_each_entry(tb, node, &fib_table_hash[h], tb_hlist)
+		head = &net->ipv4.fib_table_hash[h];
+		hlist_for_each_entry(tb, node, head, tb_hlist)
 			flushed += tb->tb_flush(tb);
 	}
 
@@ -130,7 +153,7 @@ static void fib_flush(void)
  *	Find the first device with a given source address.
  */
 
-struct net_device * ip_dev_find(__be32 addr)
+struct net_device * ip_dev_find(struct net *net, __be32 addr)
 {
 	struct flowi fl = { .nl_u = { .ip4_u = { .daddr = addr } } };
 	struct fib_result res;
@@ -141,7 +164,7 @@ struct net_device * ip_dev_find(__be32 addr)
 	res.r = NULL;
 #endif
 
-	local_table = fib_get_table(RT_TABLE_LOCAL);
+	local_table = fib_get_table(net, RT_TABLE_LOCAL);
 	if (!local_table || local_table->tb_lookup(local_table, &fl, &res))
 		return NULL;
 	if (res.type != RTN_LOCAL)
@@ -155,33 +178,51 @@ out:
 	return dev;
 }
 
-unsigned inet_addr_type(__be32 addr)
+/*
+ * Find address type as if only "dev" was present in the system. If
+ * on_dev is NULL then all interfaces are taken into consideration.
+ */
+static inline unsigned __inet_dev_addr_type(struct net *net,
+					    const struct net_device *dev,
+					    __be32 addr)
 {
 	struct flowi		fl = { .nl_u = { .ip4_u = { .daddr = addr } } };
 	struct fib_result	res;
 	unsigned ret = RTN_BROADCAST;
 	struct fib_table *local_table;
 
-	if (ZERONET(addr) || BADCLASS(addr))
+	if (ipv4_is_zeronet(addr) || ipv4_is_lbcast(addr))
 		return RTN_BROADCAST;
-	if (MULTICAST(addr))
+	if (ipv4_is_multicast(addr))
 		return RTN_MULTICAST;
 
 #ifdef CONFIG_IP_MULTIPLE_TABLES
 	res.r = NULL;
 #endif
 
-	local_table = fib_get_table(RT_TABLE_LOCAL);
+	local_table = fib_get_table(net, RT_TABLE_LOCAL);
 	if (local_table) {
 		ret = RTN_UNICAST;
 		if (!local_table->tb_lookup(local_table, &fl, &res)) {
-			ret = res.type;
+			if (!dev || dev == res.fi->fib_dev)
+				ret = res.type;
 			fib_res_put(&res);
 		}
 	}
 	return ret;
 }
 
+unsigned int inet_addr_type(struct net *net, __be32 addr)
+{
+	return __inet_dev_addr_type(net, NULL, addr);
+}
+
+unsigned int inet_dev_addr_type(struct net *net, const struct net_device *dev,
+				__be32 addr)
+{
+       return __inet_dev_addr_type(net, dev, addr);
+}
+
 /* Given (packet source, input interface) and optional (dst, oif, tos):
    - (main) check, that source is valid i.e. not broadcast or our local
      address.
@@ -202,6 +243,7 @@ int fib_validate_source(__be32 src, __be32 dst, u8 tos, int oif,
 	struct fib_result res;
 	int no_addr, rpf;
 	int ret;
+	struct net *net;
 
 	no_addr = rpf = 0;
 	rcu_read_lock();
@@ -215,7 +257,8 @@ int fib_validate_source(__be32 src, __be32 dst, u8 tos, int oif,
 	if (in_dev == NULL)
 		goto e_inval;
 
-	if (fib_lookup(&fl, &res))
+	net = dev->nd_net;
+	if (fib_lookup(net, &fl, &res))
 		goto last_resort;
 	if (res.type != RTN_UNICAST)
 		goto e_inval_res;
@@ -239,7 +282,7 @@ int fib_validate_source(__be32 src, __be32 dst, u8 tos, int oif,
 	fl.oif = dev->ifindex;
 
 	ret = 0;
-	if (fib_lookup(&fl, &res) == 0) {
+	if (fib_lookup(net, &fl, &res) == 0) {
 		if (res.type == RTN_UNICAST) {
 			*spec_dst = FIB_RES_PREFSRC(res);
 			ret = FIB_RES_NH(res).nh_scope >= RT_SCOPE_HOST;
@@ -278,13 +321,14 @@ static int put_rtax(struct nlattr *mx, int len, int type, u32 value)
 	return len + nla_total_size(4);
 }
 
-static int rtentry_to_fib_config(int cmd, struct rtentry *rt,
+static int rtentry_to_fib_config(struct net *net, int cmd, struct rtentry *rt,
 				 struct fib_config *cfg)
 {
 	__be32 addr;
 	int plen;
 
 	memset(cfg, 0, sizeof(*cfg));
+	cfg->fc_nlinfo.nl_net = net;
 
 	if (rt->rt_dst.sa_family != AF_INET)
 		return -EAFNOSUPPORT;
@@ -345,7 +389,7 @@ static int rtentry_to_fib_config(int cmd, struct rtentry *rt,
 		colon = strchr(devname, ':');
 		if (colon)
 			*colon = 0;
-		dev = __dev_get_by_name(&init_net, devname);
+		dev = __dev_get_by_name(net, devname);
 		if (!dev)
 			return -ENODEV;
 		cfg->fc_oif = dev->ifindex;
@@ -368,7 +412,7 @@ static int rtentry_to_fib_config(int cmd, struct rtentry *rt,
 	if (rt->rt_gateway.sa_family == AF_INET && addr) {
 		cfg->fc_gw = addr;
 		if (rt->rt_flags & RTF_GATEWAY &&
-		    inet_addr_type(addr) == RTN_UNICAST)
+		    inet_addr_type(net, addr) == RTN_UNICAST)
 			cfg->fc_scope = RT_SCOPE_UNIVERSE;
 	}
 
@@ -409,7 +453,7 @@ static int rtentry_to_fib_config(int cmd, struct rtentry *rt,
  *	Handle IP routing ioctl calls. These are used to manipulate the routing tables
  */
 
-int ip_rt_ioctl(unsigned int cmd, void __user *arg)
+int ip_rt_ioctl(struct net *net, unsigned int cmd, void __user *arg)
 {
 	struct fib_config cfg;
 	struct rtentry rt;
@@ -425,18 +469,18 @@ int ip_rt_ioctl(unsigned int cmd, void __user *arg)
 			return -EFAULT;
 
 		rtnl_lock();
-		err = rtentry_to_fib_config(cmd, &rt, &cfg);
+		err = rtentry_to_fib_config(net, cmd, &rt, &cfg);
 		if (err == 0) {
 			struct fib_table *tb;
 
 			if (cmd == SIOCDELRT) {
-				tb = fib_get_table(cfg.fc_table);
+				tb = fib_get_table(net, cfg.fc_table);
 				if (tb)
 					err = tb->tb_delete(tb, &cfg);
 				else
 					err = -ESRCH;
 			} else {
-				tb = fib_new_table(cfg.fc_table);
+				tb = fib_new_table(net, cfg.fc_table);
 				if (tb)
 					err = tb->tb_insert(tb, &cfg);
 				else
@@ -466,8 +510,8 @@ const struct nla_policy rtm_ipv4_policy[RTA_MAX+1] = {
 	[RTA_FLOW]		= { .type = NLA_U32 },
 };
 
-static int rtm_to_fib_config(struct sk_buff *skb, struct nlmsghdr *nlh,
-			     struct fib_config *cfg)
+static int rtm_to_fib_config(struct net *net, struct sk_buff *skb,
+			    struct nlmsghdr *nlh, struct fib_config *cfg)
 {
 	struct nlattr *attr;
 	int err, remaining;
@@ -491,6 +535,7 @@ static int rtm_to_fib_config(struct sk_buff *skb, struct nlmsghdr *nlh,
 
 	cfg->fc_nlinfo.pid = NETLINK_CB(skb).pid;
 	cfg->fc_nlinfo.nlh = nlh;
+	cfg->fc_nlinfo.nl_net = net;
 
 	if (cfg->fc_type > RTN_MAX) {
 		err = -EINVAL;
@@ -538,15 +583,16 @@ errout:
 
 static int inet_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 {
+	struct net *net = skb->sk->sk_net;
 	struct fib_config cfg;
 	struct fib_table *tb;
 	int err;
 
-	err = rtm_to_fib_config(skb, nlh, &cfg);
+	err = rtm_to_fib_config(net, skb, nlh, &cfg);
 	if (err < 0)
 		goto errout;
 
-	tb = fib_get_table(cfg.fc_table);
+	tb = fib_get_table(net, cfg.fc_table);
 	if (tb == NULL) {
 		err = -ESRCH;
 		goto errout;
@@ -559,15 +605,16 @@ errout:
 
 static int inet_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 {
+	struct net *net = skb->sk->sk_net;
 	struct fib_config cfg;
 	struct fib_table *tb;
 	int err;
 
-	err = rtm_to_fib_config(skb, nlh, &cfg);
+	err = rtm_to_fib_config(net, skb, nlh, &cfg);
 	if (err < 0)
 		goto errout;
 
-	tb = fib_new_table(cfg.fc_table);
+	tb = fib_new_table(net, cfg.fc_table);
 	if (tb == NULL) {
 		err = -ENOBUFS;
 		goto errout;
@@ -580,10 +627,12 @@ errout:
 
 static int inet_dump_fib(struct sk_buff *skb, struct netlink_callback *cb)
 {
+	struct net *net = skb->sk->sk_net;
 	unsigned int h, s_h;
 	unsigned int e = 0, s_e;
 	struct fib_table *tb;
 	struct hlist_node *node;
+	struct hlist_head *head;
 	int dumped = 0;
 
 	if (nlmsg_len(cb->nlh) >= sizeof(struct rtmsg) &&
@@ -595,7 +644,8 @@ static int inet_dump_fib(struct sk_buff *skb, struct netlink_callback *cb)
 
 	for (h = s_h; h < FIB_TABLE_HASHSZ; h++, s_e = 0) {
 		e = 0;
-		hlist_for_each_entry(tb, node, &fib_table_hash[h], tb_hlist) {
+		head = &net->ipv4.fib_table_hash[h];
+		hlist_for_each_entry(tb, node, head, tb_hlist) {
 			if (e < s_e)
 				goto next;
 			if (dumped)
@@ -624,6 +674,7 @@ out:
 
 static void fib_magic(int cmd, int type, __be32 dst, int dst_len, struct in_ifaddr *ifa)
 {
+	struct net *net = ifa->ifa_dev->dev->nd_net;
 	struct fib_table *tb;
 	struct fib_config cfg = {
 		.fc_protocol = RTPROT_KERNEL,
@@ -633,12 +684,15 @@ static void fib_magic(int cmd, int type, __be32 dst, int dst_len, struct in_ifad
 		.fc_prefsrc = ifa->ifa_local,
 		.fc_oif = ifa->ifa_dev->dev->ifindex,
 		.fc_nlflags = NLM_F_CREATE | NLM_F_APPEND,
+		.fc_nlinfo = {
+			.nl_net = net,
+		},
 	};
 
 	if (type == RTN_UNICAST)
-		tb = fib_new_table(RT_TABLE_MAIN);
+		tb = fib_new_table(net, RT_TABLE_MAIN);
 	else
-		tb = fib_new_table(RT_TABLE_LOCAL);
+		tb = fib_new_table(net, RT_TABLE_LOCAL);
 
 	if (tb == NULL)
 		return;
@@ -668,7 +722,7 @@ void fib_add_ifaddr(struct in_ifaddr *ifa)
 	if (ifa->ifa_flags&IFA_F_SECONDARY) {
 		prim = inet_ifa_byprefix(in_dev, prefix, mask);
 		if (prim == NULL) {
-			printk(KERN_DEBUG "fib_add_ifaddr: bug: prim == NULL\n");
+			printk(KERN_WARNING "fib_add_ifaddr: bug: prim == NULL\n");
 			return;
 		}
 	}
@@ -682,7 +736,7 @@ void fib_add_ifaddr(struct in_ifaddr *ifa)
 	if (ifa->ifa_broadcast && ifa->ifa_broadcast != htonl(0xFFFFFFFF))
 		fib_magic(RTM_NEWROUTE, RTN_BROADCAST, ifa->ifa_broadcast, 32, prim);
 
-	if (!ZERONET(prefix) && !(ifa->ifa_flags&IFA_F_SECONDARY) &&
+	if (!ipv4_is_zeronet(prefix) && !(ifa->ifa_flags&IFA_F_SECONDARY) &&
 	    (prefix != addr || ifa->ifa_prefixlen < 32)) {
 		fib_magic(RTM_NEWROUTE, dev->flags&IFF_LOOPBACK ? RTN_LOCAL :
 			  RTN_UNICAST, prefix, ifa->ifa_prefixlen, prim);
@@ -715,7 +769,7 @@ static void fib_del_ifaddr(struct in_ifaddr *ifa)
 	else {
 		prim = inet_ifa_byprefix(in_dev, any, ifa->ifa_mask);
 		if (prim == NULL) {
-			printk(KERN_DEBUG "fib_del_ifaddr: bug: prim == NULL\n");
+			printk(KERN_WARNING "fib_del_ifaddr: bug: prim == NULL\n");
 			return;
 		}
 	}
@@ -747,15 +801,15 @@ static void fib_del_ifaddr(struct in_ifaddr *ifa)
 		fib_magic(RTM_DELROUTE, RTN_LOCAL, ifa->ifa_local, 32, prim);
 
 		/* Check, that this local address finally disappeared. */
-		if (inet_addr_type(ifa->ifa_local) != RTN_LOCAL) {
+		if (inet_addr_type(dev->nd_net, ifa->ifa_local) != RTN_LOCAL) {
 			/* And the last, but not the least thing.
 			   We must flush stray FIB entries.
 
 			   First of all, we scan fib_info list searching
 			   for stray nexthop entries, then ignite fib_flush.
 			*/
-			if (fib_sync_down(ifa->ifa_local, NULL, 0))
-				fib_flush();
+			if (fib_sync_down_addr(dev->nd_net, ifa->ifa_local))
+				fib_flush(dev->nd_net);
 		}
 	}
 #undef LOCAL_OK
@@ -797,11 +851,13 @@ static void nl_fib_lookup(struct fib_result_nl *frn, struct fib_table *tb )
 
 static void nl_fib_input(struct sk_buff *skb)
 {
+	struct net *net;
 	struct fib_result_nl *frn;
 	struct nlmsghdr *nlh;
 	struct fib_table *tb;
 	u32 pid;
 
+	net = skb->sk->sk_net;
 	nlh = nlmsg_hdr(skb);
 	if (skb->len < NLMSG_SPACE(0) || skb->len < nlh->nlmsg_len ||
 	    nlh->nlmsg_len < NLMSG_LENGTH(sizeof(*frn)))
@@ -813,26 +869,37 @@ static void nl_fib_input(struct sk_buff *skb)
 	nlh = nlmsg_hdr(skb);
 
 	frn = (struct fib_result_nl *) NLMSG_DATA(nlh);
-	tb = fib_get_table(frn->tb_id_in);
+	tb = fib_get_table(net, frn->tb_id_in);
 
 	nl_fib_lookup(frn, tb);
 
 	pid = NETLINK_CB(skb).pid;       /* pid of sending process */
 	NETLINK_CB(skb).pid = 0;         /* from kernel */
 	NETLINK_CB(skb).dst_group = 0;  /* unicast */
-	netlink_unicast(fibnl, skb, pid, MSG_DONTWAIT);
+	netlink_unicast(net->ipv4.fibnl, skb, pid, MSG_DONTWAIT);
 }
 
-static void nl_fib_lookup_init(void)
+static int nl_fib_lookup_init(struct net *net)
 {
-	fibnl = netlink_kernel_create(&init_net, NETLINK_FIB_LOOKUP, 0,
-				      nl_fib_input, NULL, THIS_MODULE);
+	struct sock *sk;
+	sk = netlink_kernel_create(net, NETLINK_FIB_LOOKUP, 0,
+				   nl_fib_input, NULL, THIS_MODULE);
+	if (sk == NULL)
+		return -EAFNOSUPPORT;
+	net->ipv4.fibnl = sk;
+	return 0;
+}
+
+static void nl_fib_lookup_exit(struct net *net)
+{
+	netlink_kernel_release(net->ipv4.fibnl);
+	net->ipv4.fibnl = NULL;
 }
 
 static void fib_disable_ip(struct net_device *dev, int force)
 {
-	if (fib_sync_down(0, dev, force))
-		fib_flush();
+	if (fib_sync_down_dev(dev, force))
+		fib_flush(dev->nd_net);
 	rt_cache_flush(0);
 	arp_ifdown(dev);
 }
@@ -869,9 +936,6 @@ static int fib_netdev_event(struct notifier_block *this, unsigned long event, vo
 	struct net_device *dev = ptr;
 	struct in_device *in_dev = __in_dev_get_rtnl(dev);
 
-	if (dev->nd_net != &init_net)
-		return NOTIFY_DONE;
-
 	if (event == NETDEV_UNREGISTER) {
 		fib_disable_ip(dev, 2);
 		return NOTIFY_DONE;
@@ -909,23 +973,100 @@ static struct notifier_block fib_netdev_notifier = {
 	.notifier_call =fib_netdev_event,
 };
 
-void __init ip_fib_init(void)
+static int __net_init ip_fib_net_init(struct net *net)
 {
+	int err;
 	unsigned int i;
 
+	net->ipv4.fib_table_hash = kzalloc(
+			sizeof(struct hlist_head)*FIB_TABLE_HASHSZ, GFP_KERNEL);
+	if (net->ipv4.fib_table_hash == NULL)
+		return -ENOMEM;
+
 	for (i = 0; i < FIB_TABLE_HASHSZ; i++)
-		INIT_HLIST_HEAD(&fib_table_hash[i]);
+		INIT_HLIST_HEAD(&net->ipv4.fib_table_hash[i]);
+
+	err = fib4_rules_init(net);
+	if (err < 0)
+		goto fail;
+	return 0;
 
-	fib4_rules_init();
+fail:
+	kfree(net->ipv4.fib_table_hash);
+	return err;
+}
 
-	register_netdevice_notifier(&fib_netdev_notifier);
-	register_inetaddr_notifier(&fib_inetaddr_notifier);
-	nl_fib_lookup_init();
+static void __net_exit ip_fib_net_exit(struct net *net)
+{
+	unsigned int i;
+
+#ifdef CONFIG_IP_MULTIPLE_TABLES
+	fib4_rules_exit(net);
+#endif
+
+	for (i = 0; i < FIB_TABLE_HASHSZ; i++) {
+		struct fib_table *tb;
+		struct hlist_head *head;
+		struct hlist_node *node, *tmp;
+
+		head = &net->ipv4.fib_table_hash[i];
+		hlist_for_each_entry_safe(tb, node, tmp, head, tb_hlist) {
+			hlist_del(node);
+			tb->tb_flush(tb);
+			kfree(tb);
+		}
+	}
+	kfree(net->ipv4.fib_table_hash);
+}
+
+static int __net_init fib_net_init(struct net *net)
+{
+	int error;
+
+	error = ip_fib_net_init(net);
+	if (error < 0)
+		goto out;
+	error = nl_fib_lookup_init(net);
+	if (error < 0)
+		goto out_nlfl;
+	error = fib_proc_init(net);
+	if (error < 0)
+		goto out_proc;
+out:
+	return error;
+
+out_proc:
+	nl_fib_lookup_exit(net);
+out_nlfl:
+	ip_fib_net_exit(net);
+	goto out;
+}
+
+static void __net_exit fib_net_exit(struct net *net)
+{
+	fib_proc_exit(net);
+	nl_fib_lookup_exit(net);
+	ip_fib_net_exit(net);
+}
 
+static struct pernet_operations fib_net_ops = {
+	.init = fib_net_init,
+	.exit = fib_net_exit,
+};
+
+void __init ip_fib_init(void)
+{
 	rtnl_register(PF_INET, RTM_NEWROUTE, inet_rtm_newroute, NULL);
 	rtnl_register(PF_INET, RTM_DELROUTE, inet_rtm_delroute, NULL);
 	rtnl_register(PF_INET, RTM_GETROUTE, NULL, inet_dump_fib);
+
+	register_pernet_subsys(&fib_net_ops);
+	register_netdevice_notifier(&fib_netdev_notifier);
+	register_inetaddr_notifier(&fib_inetaddr_notifier);
+
+	fib_hash_init();
 }
 
 EXPORT_SYMBOL(inet_addr_type);
+EXPORT_SYMBOL(inet_dev_addr_type);
 EXPORT_SYMBOL(ip_dev_find);