[SCTP]: Fix bug in restart of peeled-off associations.

Signed-off-by: Vladislav Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 0 deletions

diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 0b338eca6dc0..2a3c0e08a090 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -4686,6 +4686,7 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
         struct sctp_endpoint *newep = newsp->ep;
         struct sk_buff *skb, *tmp;
         struct sctp_ulpevent *event;
+        int flags = 0;
 
         /* Migrate socket buffer sizes and all the socket level options to the
          * new socket.
@@ -4707,6 +4708,17 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
         sctp_sk(newsk)->bind_hash = pp;
         inet_sk(newsk)->num = inet_sk(oldsk)->num;
 
+        /* Copy the bind_addr list from the original endpoint to the new
+         * endpoint so that we can handle restarts properly
+         */
+        if (assoc->peer.ipv4_address)
+                flags |= SCTP_ADDR4_PEERSUPP;
+        if (assoc->peer.ipv6_address)
+                flags |= SCTP_ADDR6_PEERSUPP;
+        sctp_bind_addr_copy(&newsp->ep->base.bind_addr,
+                             &oldsp->ep->base.bind_addr,
+                             SCTP_SCOPE_GLOBAL, GFP_KERNEL, flags);
+
         /* Move any messages in the old socket's receive queue that are for the
          * peeled off association to the new socket's receive queue.
          */