[NETNS]: Add netns parameter to inetdev_by_index.

Signed-off-by: NDenis V. Lunev <den@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/inetdevice.h

@@ -133,7 +133,7 @@ extern struct net_device 	*ip_dev_find(__be32 addr);
 extern int		inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b);
 extern int		devinet_ioctl(unsigned int cmd, void __user *);
 extern void		devinet_init(void);
-extern struct in_device	*inetdev_by_index(int);
+extern struct in_device	*inetdev_by_index(struct net *, int);
 extern __be32		inet_select_addr(const struct net_device *dev, __be32 dst, int scope);
 extern __be32		inet_confirm_addr(struct in_device *in_dev, __be32 dst, __be32 local, int scope);
 extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix, __be32 mask);

net/ipv4/devinet.c

@@ -409,12 +409,12 @@ static int inet_set_ifa(struct net_device *dev, struct in_ifaddr *ifa)
 	return inet_insert_ifa(ifa);
 }
 
-struct in_device *inetdev_by_index(int ifindex)
+struct in_device *inetdev_by_index(struct net *net, int ifindex)
 {
 	struct net_device *dev;
 	struct in_device *in_dev = NULL;
 	read_lock(&dev_base_lock);
-	dev = __dev_get_by_index(&init_net, ifindex);
+	dev = __dev_get_by_index(net, ifindex);
 	if (dev)
 		in_dev = in_dev_get(dev);
 	read_unlock(&dev_base_lock);
@@ -454,7 +454,7 @@ static int inet_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg
 		goto errout;
 
 	ifm = nlmsg_data(nlh);
-	in_dev = inetdev_by_index(ifm->ifa_index);
+	in_dev = inetdev_by_index(net, ifm->ifa_index);
 	if (in_dev == NULL) {
 		err = -ENODEV;
 		goto errout;

net/ipv4/fib_semantics.c

@@ -583,7 +583,7 @@ static int fib_check_nh(struct fib_config *cfg, struct fib_info *fi,
 		if (nh->nh_flags&(RTNH_F_PERVASIVE|RTNH_F_ONLINK))
 			return -EINVAL;
 
-		in_dev = inetdev_by_index(nh->nh_oif);
+		in_dev = inetdev_by_index(&init_net, nh->nh_oif);
 		if (in_dev == NULL)
 			return -ENODEV;
 		if (!(in_dev->dev->flags&IFF_UP)) {

net/ipv4/igmp.c

@@ -1389,7 +1389,7 @@ static struct in_device * ip_mc_find_dev(struct ip_mreqn *imr)
 	struct in_device *idev = NULL;
 
 	if (imr->imr_ifindex) {
-		idev = inetdev_by_index(imr->imr_ifindex);
+		idev = inetdev_by_index(&init_net, imr->imr_ifindex);
 		if (idev)
 			__in_dev_put(idev);
 		return idev;
@@ -2222,7 +2222,7 @@ void ip_mc_drop_socket(struct sock *sk)
 		struct in_device *in_dev;
 		inet->mc_list = iml->next;
 
-		in_dev = inetdev_by_index(iml->multi.imr_ifindex);
+		in_dev = inetdev_by_index(&init_net, iml->multi.imr_ifindex);
 		(void) ip_mc_leave_src(sk, iml, in_dev);
 		if (in_dev != NULL) {
 			ip_mc_dec_group(in_dev, iml->multi.imr_multiaddr.s_addr);

net/ipv4/ip_gre.c

@@ -1193,7 +1193,8 @@ static int ipgre_close(struct net_device *dev)
 {
 	struct ip_tunnel *t = netdev_priv(dev);
 	if (ipv4_is_multicast(t->parms.iph.daddr) && t->mlink) {
-		struct in_device *in_dev = inetdev_by_index(t->mlink);
+		struct in_device *in_dev;
+		in_dev = inetdev_by_index(dev->nd_net, t->mlink);
 		if (in_dev) {
 			ip_mc_dec_group(in_dev, t->parms.iph.daddr);
 			in_dev_put(in_dev);