1 files changed, 48 insertions, 7 deletions

diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index ff0a8f88de04..dea864f5de54 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -3939,7 +3939,6 @@ SCTP_STATIC int sctp_do_peeloff(struct sctp_association *asoc,
 {
         struct sock *sk = asoc->base.sk;
         struct socket *sock;
-        struct inet_sock *inetsk;
         struct sctp_af *af;
         int err = 0;
 
@@ -3954,18 +3953,18 @@ SCTP_STATIC int sctp_do_peeloff(struct sctp_association *asoc,
         if (err < 0)
                 return err;
 
-        /* Populate the fields of the newsk from the oldsk and migrate the
-         * asoc to the newsk.
-         */
-        sctp_sock_migrate(sk, sock->sk, asoc, SCTP_SOCKET_UDP_HIGH_BANDWIDTH);
+        sctp_copy_sock(sock->sk, sk, asoc);
 
         /* Make peeled-off sockets more like 1-1 accepted sockets.
          * Set the daddr and initialize id to something more random
          */
         af = sctp_get_af_specific(asoc->peer.primary_addr.sa.sa_family);
         af->to_sk_daddr(&asoc->peer.primary_addr, sk);
-        inetsk = inet_sk(sock->sk);
-        inetsk->id = asoc->next_tsn ^ jiffies;
+
+        /* Populate the fields of the newsk from the oldsk and migrate the
+         * asoc to the newsk.
+         */
+        sctp_sock_migrate(sk, sock->sk, asoc, SCTP_SOCKET_UDP_HIGH_BANDWIDTH);
 
         *sockp = sock;
 
@@ -6700,6 +6699,48 @@ done:
         sctp_skb_set_owner_r(skb, sk);
 }
 
+void sctp_copy_sock(struct sock *newsk, struct sock *sk,
+                    struct sctp_association *asoc)
+{
+        struct inet_sock *inet = inet_sk(sk);
+        struct inet_sock *newinet = inet_sk(newsk);
+
+        newsk->sk_type = sk->sk_type;
+        newsk->sk_bound_dev_if = sk->sk_bound_dev_if;
+        newsk->sk_flags = sk->sk_flags;
+        newsk->sk_no_check = sk->sk_no_check;
+        newsk->sk_reuse = sk->sk_reuse;
+
+        newsk->sk_shutdown = sk->sk_shutdown;
+        newsk->sk_destruct = inet_sock_destruct;
+        newsk->sk_family = sk->sk_family;
+        newsk->sk_protocol = IPPROTO_SCTP;
+        newsk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
+        newsk->sk_sndbuf = sk->sk_sndbuf;
+        newsk->sk_rcvbuf = sk->sk_rcvbuf;
+        newsk->sk_lingertime = sk->sk_lingertime;
+        newsk->sk_rcvtimeo = sk->sk_rcvtimeo;
+        newsk->sk_sndtimeo = sk->sk_sndtimeo;
+
+        newinet = inet_sk(newsk);
+
+        /* Initialize sk's sport, dport, rcv_saddr and daddr for
+         * getsockname() and getpeername()
+         */
+        newinet->sport = inet->sport;
+        newinet->saddr = inet->saddr;
+        newinet->rcv_saddr = inet->rcv_saddr;
+        newinet->dport = htons(asoc->peer.port);
+        newinet->pmtudisc = inet->pmtudisc;
+        newinet->id = asoc->next_tsn ^ jiffies;
+
+        newinet->uc_ttl = inet->uc_ttl;
+        newinet->mc_loop = 1;
+        newinet->mc_ttl = 1;
+        newinet->mc_index = 0;
+        newinet->mc_list = NULL;
+}
+
 /* Populate the fields of the newsk from the oldsk and migrate the assoc
  * and its messages to the newsk.
  */