[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>

12 files changed, 30 insertions, 28 deletions

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 @@ int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 	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 @@ static int arp_constructor(struct neighbour *neigh)
 	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 @@ static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb)
 	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 @@ int arp_find(unsigned char *haddr, struct sk_buff *skb)
 
 	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 @@ static int arp_process(struct sk_buff *skb)
 	/* 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 @@ static int arp_process(struct sk_buff *skb)
 		 */
 		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 @@ out:
  * 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 @@ static inline unsigned __inet_dev_addr_type(const struct net_device *dev,
 	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 @@ static inline unsigned __inet_dev_addr_type(const struct net_device *dev,
 	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 @@ 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(&init_net, addr) == RTN_UNICAST)
 			cfg->fc_scope = RT_SCOPE_UNIVERSE;
 	}
 
@@ -782,7 +784,7 @@ 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(&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..c1263e23 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -531,7 +531,7 @@ static int fib_check_nh(struct fib_config *cfg, struct fib_info *fi,
 
 			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 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
 	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 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
 		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 @@ static void icmp_unreach(struct sk_buff *skb)
 	 */
 
 	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 @@ int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb)
 						__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 @@ int ip_options_compile(struct ip_options * opt, struct sk_buff * skb)
 					{
 						__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 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
 	   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 @@ __ip_vs_update_dest(struct ip_vs_service *svc,
 	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 @@ ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user *udest,
 
 	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 @@ int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type)
 	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 @@ MODULE_DESCRIPTION("iptables addrtype match");
 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 @@ static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 
 	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 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
 		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;
 	}