[NETNS]: Add netns parameter to inet_(dev_)add_type.

The patch extends the inet_addr_type and inet_dev_addr_type with the
network namespace pointer. That allows to access the different tables
relatively to the network namespace.

The modification of the signature function is reported in all the
callers of the inet_addr_type using the pointer to the well known
init_net.

Acked-by: Benjamin Thery <benjamin.thery@bull.net>
Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/s390/net/qeth_main.c b/drivers/s390/net/qeth_main.c
index ff999ff..f1866a2 100644
--- a/drivers/s390/net/qeth_main.c
+++ b/drivers/s390/net/qeth_main.c
@@ -8340,7 +8340,7 @@
 	neigh->parms = neigh_parms_clone(parms);
 	rcu_read_unlock();
 
-	neigh->type = inet_addr_type(*(__be32 *) neigh->primary_key);
+	neigh->type = inet_addr_type(&init_net, *(__be32 *) neigh->primary_key);
 	neigh->nud_state = NUD_NOARP;
 	neigh->ops = arp_direct_ops;
 	neigh->output = neigh->ops->queue_xmit;
diff --git a/include/net/route.h b/include/net/route.h
index 76b08c1..b777000 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -117,8 +117,8 @@
 extern unsigned short	ip_rt_frag_needed(struct iphdr *iph, unsigned short new_mtu);
 extern void		ip_rt_send_redirect(struct sk_buff *skb);
 
-extern unsigned		inet_addr_type(__be32 addr);
-extern unsigned		inet_dev_addr_type(const struct net_device *dev, __be32 addr);
+extern unsigned		inet_addr_type(struct net *net, __be32 addr);
+extern unsigned		inet_dev_addr_type(struct net *net, const struct net_device *dev, __be32 addr);
 extern void		ip_rt_multicast_event(struct in_device *);
 extern int		ip_rt_ioctl(unsigned int cmd, void __user *arg);
 extern void		ip_rt_get_source(u8 *src, struct rtable *rt);
diff --git a/net/atm/clip.c b/net/atm/clip.c
index 47fbdc0..df7d218 100644
--- a/net/atm/clip.c
+++ b/net/atm/clip.c
@@ -285,7 +285,7 @@
 	struct neigh_parms *parms;
 
 	pr_debug("clip_constructor (neigh %p, entry %p)\n", neigh, entry);
-	neigh->type = inet_addr_type(entry->ip);
+	neigh->type = inet_addr_type(&init_net, entry->ip);
 	if (neigh->type != RTN_UNICAST)
 		return -EINVAL;
 
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 40ecaae..d76f8d8 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -446,7 +446,7 @@
 	if (addr_len < sizeof(struct sockaddr_in))
 		goto out;
 
-	chk_addr_ret = inet_addr_type(addr->sin_addr.s_addr);
+	chk_addr_ret = inet_addr_type(&init_net, addr->sin_addr.s_addr);
 
 	/* Not specified by any standard per-se, however it breaks too
 	 * many applications when removed.  It is unfortunate since
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 46edf1c..3f0730ec 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -235,7 +235,7 @@
 	struct in_device *in_dev;
 	struct neigh_parms *parms;
 
-	neigh->type = inet_addr_type(addr);
+	neigh->type = inet_addr_type(&init_net, addr);
 
 	rcu_read_lock();
 	in_dev = __in_dev_get_rcu(dev);
@@ -341,14 +341,14 @@
 	switch (IN_DEV_ARP_ANNOUNCE(in_dev)) {
 	default:
 	case 0:		/* By default announce any local IP */
-		if (skb && inet_addr_type(ip_hdr(skb)->saddr) == RTN_LOCAL)
+		if (skb && inet_addr_type(&init_net, ip_hdr(skb)->saddr) == RTN_LOCAL)
 			saddr = ip_hdr(skb)->saddr;
 		break;
 	case 1:		/* Restrict announcements of saddr in same subnet */
 		if (!skb)
 			break;
 		saddr = ip_hdr(skb)->saddr;
-		if (inet_addr_type(saddr) == RTN_LOCAL) {
+		if (inet_addr_type(&init_net, saddr) == RTN_LOCAL) {
 			/* saddr should be known to target */
 			if (inet_addr_onlink(in_dev, target, saddr))
 				break;
@@ -479,7 +479,7 @@
 
 	paddr = ((struct rtable*)skb->dst)->rt_gateway;
 
-	if (arp_set_predefined(inet_addr_type(paddr), haddr, paddr, dev))
+	if (arp_set_predefined(inet_addr_type(&init_net, paddr), haddr, paddr, dev))
 		return 0;
 
 	n = __neigh_lookup(&arp_tbl, &paddr, dev, 1);
@@ -806,7 +806,7 @@
 	/* Special case: IPv4 duplicate address detection packet (RFC2131) */
 	if (sip == 0) {
 		if (arp->ar_op == htons(ARPOP_REQUEST) &&
-		    inet_addr_type(tip) == RTN_LOCAL &&
+		    inet_addr_type(&init_net, tip) == RTN_LOCAL &&
 		    !arp_ignore(in_dev,dev,sip,tip))
 			arp_send(ARPOP_REPLY, ETH_P_ARP, sip, dev, tip, sha,
 				 dev->dev_addr, sha);
@@ -866,7 +866,7 @@
 		 */
 		if (n == NULL &&
 		    arp->ar_op == htons(ARPOP_REPLY) &&
-		    inet_addr_type(sip) == RTN_UNICAST)
+		    inet_addr_type(&init_net, sip) == RTN_UNICAST)
 			n = __neigh_lookup(&arp_tbl, &sip, dev, 1);
 	}
 
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 7718823..d1a45cb 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -166,7 +166,8 @@
  * 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(const struct net_device *dev,
+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 } } };
@@ -183,7 +184,7 @@
 	res.r = NULL;
 #endif
 
-	local_table = fib_get_table(&init_net, 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)) {
@@ -195,14 +196,15 @@
 	return ret;
 }
 
-unsigned int inet_addr_type(__be32 addr)
+unsigned int inet_addr_type(struct net *net, __be32 addr)
 {
-	return __inet_dev_addr_type(NULL, addr);
+	return __inet_dev_addr_type(net, NULL, addr);
 }
 
-unsigned int inet_dev_addr_type(const struct net_device *dev, __be32 addr)
+unsigned int inet_dev_addr_type(struct net *net, const struct net_device *dev,
+				__be32 addr)
 {
-       return __inet_dev_addr_type(dev, addr);
+       return __inet_dev_addr_type(net, dev, addr);
 }
 
 /* Given (packet source, input interface) and optional (dst, oif, tos):
@@ -391,7 +393,7 @@
 	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(&init_net, addr) == RTN_UNICAST)
 			cfg->fc_scope = RT_SCOPE_UNIVERSE;
 	}
 
@@ -782,7 +784,7 @@
 		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(&init_net, ifa->ifa_local) != RTN_LOCAL) {
 			/* And the last, but not the least thing.
 			   We must flush stray FIB entries.
 
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index bbd4a24..c1263e2 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -531,7 +531,7 @@
 
 			if (cfg->fc_scope >= RT_SCOPE_LINK)
 				return -EINVAL;
-			if (inet_addr_type(nh->nh_gw) != RTN_UNICAST)
+			if (inet_addr_type(&init_net, nh->nh_gw) != RTN_UNICAST)
 				return -EINVAL;
 			if ((dev = __dev_get_by_index(&init_net, nh->nh_oif)) == NULL)
 				return -ENODEV;
@@ -809,7 +809,7 @@
 	if (fi->fib_prefsrc) {
 		if (cfg->fc_type != RTN_LOCAL || !cfg->fc_dst ||
 		    fi->fib_prefsrc != cfg->fc_dst)
-			if (inet_addr_type(fi->fib_prefsrc) != RTN_LOCAL)
+			if (inet_addr_type(&init_net, fi->fib_prefsrc) != RTN_LOCAL)
 				goto err_inval;
 	}
 
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 1a60249..e57f167 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -590,7 +590,7 @@
 		if (xfrm_decode_session_reverse(skb_in, &fl, AF_INET))
 			goto out_unlock;
 
-		if (inet_addr_type(fl.fl4_src) == RTN_LOCAL)
+		if (inet_addr_type(&init_net, fl.fl4_src) == RTN_LOCAL)
 			err = __ip_route_output_key(&rt2, &fl);
 		else {
 			struct flowi fl2 = {};
@@ -733,7 +733,7 @@
 	 */
 
 	if (!sysctl_icmp_ignore_bogus_error_responses &&
-	    inet_addr_type(iph->daddr) == RTN_BROADCAST) {
+	    inet_addr_type(&init_net, iph->daddr) == RTN_BROADCAST) {
 		if (net_ratelimit())
 			printk(KERN_WARNING "%u.%u.%u.%u sent an invalid ICMP "
 					    "type %u, code %u "
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index 2f14745..4d31515 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -151,7 +151,7 @@
 						__be32 addr;
 
 						memcpy(&addr, sptr+soffset-1, 4);
-						if (inet_addr_type(addr) != RTN_LOCAL) {
+						if (inet_addr_type(&init_net, addr) != RTN_LOCAL) {
 							dopt->ts_needtime = 1;
 							soffset += 8;
 						}
@@ -400,7 +400,7 @@
 					{
 						__be32 addr;
 						memcpy(&addr, &optptr[optptr[2]-1], 4);
-						if (inet_addr_type(addr) == RTN_UNICAST)
+						if (inet_addr_type(&init_net, addr) == RTN_UNICAST)
 							break;
 						if (skb)
 							timeptr = (__be32*)&optptr[optptr[2]+3];
diff --git a/net/ipv4/ipvs/ip_vs_core.c b/net/ipv4/ipvs/ip_vs_core.c
index 041f512..963981a 100644
--- a/net/ipv4/ipvs/ip_vs_core.c
+++ b/net/ipv4/ipvs/ip_vs_core.c
@@ -423,7 +423,7 @@
 	   and the destination is RTN_UNICAST (and not local), then create
 	   a cache_bypass connection entry */
 	if (sysctl_ip_vs_cache_bypass && svc->fwmark
-	    && (inet_addr_type(iph->daddr) == RTN_UNICAST)) {
+	    && (inet_addr_type(&init_net, iph->daddr) == RTN_UNICAST)) {
 		int ret, cs;
 		struct ip_vs_conn *cp;
 
diff --git a/net/ipv4/ipvs/ip_vs_ctl.c b/net/ipv4/ipvs/ip_vs_ctl.c
index 9fecfe7..94c5767 100644
--- a/net/ipv4/ipvs/ip_vs_ctl.c
+++ b/net/ipv4/ipvs/ip_vs_ctl.c
@@ -704,7 +704,7 @@
 	conn_flags = udest->conn_flags | IP_VS_CONN_F_INACTIVE;
 
 	/* check if local node and update the flags */
-	if (inet_addr_type(udest->addr) == RTN_LOCAL) {
+	if (inet_addr_type(&init_net, udest->addr) == RTN_LOCAL) {
 		conn_flags = (conn_flags & ~IP_VS_CONN_F_FWD_MASK)
 			| IP_VS_CONN_F_LOCALNODE;
 	}
@@ -756,7 +756,7 @@
 
 	EnterFunction(2);
 
-	atype = inet_addr_type(udest->addr);
+	atype = inet_addr_type(&init_net, udest->addr);
 	if (atype != RTN_LOCAL && atype != RTN_UNICAST)
 		return -EINVAL;
 
diff --git a/net/ipv4/netfilter.c b/net/ipv4/netfilter.c
index 4011f8f..0ed843e 100644
--- a/net/ipv4/netfilter.c
+++ b/net/ipv4/netfilter.c
@@ -19,7 +19,7 @@
 	unsigned int hh_len;
 	unsigned int type;
 
-	type = inet_addr_type(iph->saddr);
+	type = inet_addr_type(&init_net, iph->saddr);
 	if (addr_type == RTN_UNSPEC)
 		addr_type = type;
 
diff --git a/net/ipv4/netfilter/ipt_addrtype.c b/net/ipv4/netfilter/ipt_addrtype.c
index 14394c6..8763902 100644
--- a/net/ipv4/netfilter/ipt_addrtype.c
+++ b/net/ipv4/netfilter/ipt_addrtype.c
@@ -26,7 +26,7 @@
 static inline bool match_type(const struct net_device *dev, __be32 addr,
 			      u_int16_t mask)
 {
-	return !!(mask & (1 << inet_dev_addr_type(dev, addr)));
+	return !!(mask & (1 << inet_dev_addr_type(&init_net, dev, addr)));
 }
 
 static bool
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index e811034..747911a 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -620,7 +620,7 @@
 
 	if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in))
 		goto out;
-	chk_addr_ret = inet_addr_type(addr->sin_addr.s_addr);
+	chk_addr_ret = inet_addr_type(&init_net, addr->sin_addr.s_addr);
 	ret = -EADDRNOTAVAIL;
 	if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL &&
 	    chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 78c4ce4..1e59c0d 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1164,7 +1164,7 @@
 		if (IN_DEV_SEC_REDIRECTS(in_dev) && ip_fib_check_default(new_gw, dev))
 			goto reject_redirect;
 	} else {
-		if (inet_addr_type(new_gw) != RTN_UNICAST)
+		if (inet_addr_type(&init_net, new_gw) != RTN_UNICAST)
 			goto reject_redirect;
 	}
 
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 218b8b3..ac8772d 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -280,7 +280,7 @@
 	/* Check if the address belongs to the host. */
 	if (addr_type == IPV6_ADDR_MAPPED) {
 		v4addr = addr->sin6_addr.s6_addr32[3];
-		if (inet_addr_type(v4addr) != RTN_LOCAL) {
+		if (inet_addr_type(&init_net, v4addr) != RTN_LOCAL) {
 			err = -EADDRNOTAVAIL;
 			goto out;
 		}
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index b921964..3f7def2 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -372,7 +372,7 @@
 /* Should this be available for binding?   */
 static int sctp_v4_available(union sctp_addr *addr, struct sctp_sock *sp)
 {
-	int ret = inet_addr_type(addr->v4.sin_addr.s_addr);
+	int ret = inet_addr_type(&init_net, addr->v4.sin_addr.s_addr);
 
 
 	if (addr->v4.sin_addr.s_addr != INADDR_ANY &&