[NETNS][IPV6] af_inet6 - allow socket creation per namespace

Allow creation of IPv6 raw and datagram sockets in network namespaces
other than init_net.

Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 6 deletions

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index af5b30787662..430bbd2139c1 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -92,9 +92,6 @@ static int inet6_create(struct net *net, struct socket *sock, int protocol)
         int try_loading_module = 0;
         int err;
 
-        if (net != &init_net)
-                return -EAFNOSUPPORT;
-
         if (sock->type != SOCK_RAW &&
             sock->type != SOCK_DGRAM &&
             !inet_ehash_secret)
@@ -248,6 +245,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
         struct sock *sk = sock->sk;
         struct inet_sock *inet = inet_sk(sk);
         struct ipv6_pinfo *np = inet6_sk(sk);
+        struct net *net = sk->sk_net;
         __be32 v4addr = 0;
         unsigned short snum;
         int addr_type = 0;
@@ -278,7 +276,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
         /* 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(&init_net, v4addr) != RTN_LOCAL) {
+                if (inet_addr_type(net, v4addr) != RTN_LOCAL) {
                         err = -EADDRNOTAVAIL;
                         goto out;
                 }
@@ -300,7 +298,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
                                         err = -EINVAL;
                                         goto out;
                                 }
-                                dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if);
+                                dev = dev_get_by_index(net, sk->sk_bound_dev_if);
                                 if (!dev) {
                                         err = -ENODEV;
                                         goto out;
@@ -312,7 +310,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
                          */
                         v4addr = LOOPBACK4_IPV6;
                         if (!(addr_type & IPV6_ADDR_MULTICAST)) {
-                                if (!ipv6_chk_addr(&init_net, &addr->sin6_addr,
+                                if (!ipv6_chk_addr(net, &addr->sin6_addr,
                                                    dev, 0)) {
                                         if (dev)
                                                 dev_put(dev);