[SCTP]: Set ports in every address returned by sctp_getladdrs()

Thomas Dreibholz has reported that port numbers are not filled
in the results of sctp_getladdrs() when the socket was bound
to an ephemeral port.  This is only true, if the address was
not specified either.  So, fill in the port number correctly.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 894c278c8cdc..d47d5787e2e5 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -4315,6 +4315,9 @@ static int sctp_copy_laddrs_old(struct sock *sk, __u16 port,
                     (AF_INET6 == addr->a.sa.sa_family))
                         continue;
                 memcpy(&temp, &addr->a, sizeof(temp));
+                if (!temp.v4.sin_port)
+                        temp.v4.sin_port = htons(port);
+
                 sctp_get_pf_specific(sk->sk_family)->addr_v4map(sctp_sk(sk),
                                                                 &temp);
                 addrlen = sctp_get_af_specific(temp.sa.sa_family)->sockaddr_len;
@@ -4347,6 +4350,9 @@ static int sctp_copy_laddrs(struct sock *sk, __u16 port, void *to,
                     (AF_INET6 == addr->a.sa.sa_family))
                         continue;
                 memcpy(&temp, &addr->a, sizeof(temp));
+                if (!temp.v4.sin_port)
+                        temp.v4.sin_port = htons(port);
+
                 sctp_get_pf_specific(sk->sk_family)->addr_v4map(sctp_sk(sk),
                                                                 &temp);
                 addrlen = sctp_get_af_specific(temp.sa.sa_family)->sockaddr_len;