sctp: Support ipv6only AF_INET6 sockets.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 1 deletions

diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index bbc7107c86cf..e8ca4e54981f 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -2364,8 +2364,13 @@ static int sctp_process_param(struct sctp_association *asoc,
         case SCTP_PARAM_IPV6_ADDRESS:
                 if (PF_INET6 != asoc->base.sk->sk_family)
                         break;
-                /* Fall through. */
+                goto do_addr_param;
+
         case SCTP_PARAM_IPV4_ADDRESS:
+                /* v4 addresses are not allowed on v6-only socket */
+                if (ipv6_only_sock(asoc->base.sk))
+                        break;
+do_addr_param:
                 af = sctp_get_af_specific(param_type2af(param.p->type));
                 af->from_addr_param(&addr, param.addr, htons(asoc->peer.port), 0);
                 scope = sctp_scope(peer_addr);