[NETNS][IPV6]: inet6_addr - check ipv6 address per namespace

When a new address is added, we must check if the new address does not
already exists.  This patch makes this check to be aware of a network
namespace, so the check will look if the address already exists for
the specified network namespace. While the addresses are browsed, the
addresses which do not belong to the namespace are discarded.

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

1 files changed, 3 insertions, 2 deletions

diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index bd04aed673cb..74f106a7a7e9 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -556,7 +556,7 @@ static int sctp_v6_available(union sctp_addr *addr, struct sctp_sock *sp)
         if (!(type & IPV6_ADDR_UNICAST))
                 return 0;
 
-        return ipv6_chk_addr(in6, NULL, 0);
+        return ipv6_chk_addr(&init_net, in6, NULL, 0);
 }
 
 /* This function checks if the address is a valid address to be used for
@@ -858,7 +858,8 @@ static int sctp_inet6_bind_verify(struct sctp_sock *opt, union sctp_addr *addr)
                         dev = dev_get_by_index(&init_net, addr->v6.sin6_scope_id);
                         if (!dev)
                                 return 0;
-                        if (!ipv6_chk_addr(&addr->v6.sin6_addr, dev, 0)) {
+                        if (!ipv6_chk_addr(&init_net, &addr->v6.sin6_addr,
+                                           dev, 0)) {
                                 dev_put(dev);
                                 return 0;
                         }