sctp: Support ipv6only AF_INET6 sockets.

[pandora-kernel.git] / net / sctp / socket.c

diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 6aba01b..a0e879b 100644 (file)
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -308,9 +308,16 @@ static struct sctp_af *sctp_sockaddr_af(struct sctp_sock *opt,
        if (len < sizeof (struct sockaddr))
                return NULL;
 
-       /* Does this PF support this AF? */
-       if (!opt->pf->af_supported(addr->sa.sa_family, opt))
-               return NULL;
+       /* V4 mapped address are really of AF_INET family */
+       if (addr->sa.sa_family == AF_INET6 &&
+           ipv6_addr_v4mapped(&addr->v6.sin6_addr)) {
+               if (!opt->pf->af_supported(AF_INET, opt))
+                       return NULL;
+       } else {
+               /* Does this PF support this AF? */
+               if (!opt->pf->af_supported(addr->sa.sa_family, opt))
+                       return NULL;
+       }
 
        /* If we get this far, af is valid. */
        af = sctp_get_af_specific(addr->sa.sa_family);
@@ -4395,6 +4402,11 @@ static int sctp_getsockopt_local_addrs_num_old(struct sock *sk, int len,
                                    (AF_INET6 == addr->a.sa.sa_family))
                                        continue;
 
+                               if ((PF_INET6 == sk->sk_family) &&
+                                   inet_v6_ipv6only(sk) &&
+                                   (AF_INET == addr->a.sa.sa_family))
+                                       continue;
+
                                cnt++;
                        }
                        rcu_read_unlock();
@@ -4435,6 +4447,10 @@ static int sctp_copy_laddrs_old(struct sock *sk, __u16 port,
                if ((PF_INET == sk->sk_family) &&
                    (AF_INET6 == addr->a.sa.sa_family))
                        continue;
+               if ((PF_INET6 == sk->sk_family) &&
+                   inet_v6_ipv6only(sk) &&
+                   (AF_INET == addr->a.sa.sa_family))
+                       continue;
                memcpy(&temp, &addr->a, sizeof(temp));
                if (!temp.v4.sin_port)
                        temp.v4.sin_port = htons(port);
@@ -4470,6 +4486,10 @@ static int sctp_copy_laddrs(struct sock *sk, __u16 port, void *to,
                if ((PF_INET == sk->sk_family) &&
                    (AF_INET6 == addr->a.sa.sa_family))
                        continue;
+               if ((PF_INET6 == sk->sk_family) &&
+                   inet_v6_ipv6only(sk) &&
+                   (AF_INET == addr->a.sa.sa_family))
+                       continue;
                memcpy(&temp, &addr->a, sizeof(temp));
                if (!temp.v4.sin_port)
                        temp.v4.sin_port = htons(port);
@@ -5568,8 +5588,8 @@ pp_found:
                            sk2->sk_state != SCTP_SS_LISTENING)
                                continue;
 
-                       if (sctp_bind_addr_match(&ep2->base.bind_addr, addr,
-                                                sctp_sk(sk))) {
+                       if (sctp_bind_addr_conflict(&ep2->base.bind_addr, addr,
+                                                sctp_sk(sk2), sctp_sk(sk))) {
                                ret = (long)sk2;
                                goto fail_unlock;
                        }