[SCTP]: Replace socket with sock for SCTP control socket.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sctp/protocol.c

@@ -74,7 +74,7 @@ DEFINE_SPINLOCK(sctp_assocs_id_lock);
  * the Out-of-the-blue (OOTB) packets.  A control sock will be created
  * for this socket at the initialization time.
  */
-static struct socket *sctp_ctl_socket;
+static struct sock *sctp_ctl_sock;
 
 static struct sctp_pf *sctp_pf_inet6_specific;
 static struct sctp_pf *sctp_pf_inet_specific;
@@ -91,7 +91,7 @@ int sysctl_sctp_wmem[3];
 /* Return the address of the control sock. */
 struct sock *sctp_get_ctl_sock(void)
 {
-	return sctp_ctl_socket->sk;
+	return sctp_ctl_sock;
 }
 
 /* Set up the proc fs entry for the SCTP protocol. */
@@ -674,19 +674,21 @@ static int sctp_ctl_sock_init(void)
 {
 	int err;
 	sa_family_t family;
+	struct socket *socket;
 
 	if (sctp_get_pf_specific(PF_INET6))
 		family = PF_INET6;
 	else
 		family = PF_INET;
 
-	err = inet_ctl_sock_create(&sctp_ctl_socket, family,
+	err = inet_ctl_sock_create(&socket, family,
 				   SOCK_SEQPACKET, IPPROTO_SCTP);
 	if (err < 0) {
 		printk(KERN_ERR
 		       "SCTP: Failed to create the SCTP control socket.\n");
 		return err;
 	}
+	sctp_ctl_sock = socket->sk;
 	return 0;
 }
 
@@ -1284,7 +1286,7 @@ SCTP_STATIC __init int sctp_init(void)
 	sctp_v6_del_protocol();
 err_add_protocol:
 	sctp_v4_del_protocol();
-	sock_release(sctp_ctl_socket);
+	sock_release(sctp_ctl_sock->sk_socket);
 err_ctl_sock_init:
 	sctp_v6_protosw_exit();
 err_v6_protosw_init:
@@ -1328,7 +1330,7 @@ SCTP_STATIC __exit void sctp_exit(void)
 	sctp_v4_del_protocol();
 
 	/* Free the control endpoint.  */
-	sock_release(sctp_ctl_socket);
+	sock_release(sctp_ctl_sock->sk_socket);
 
 	/* Free protosw registrations */
 	sctp_v6_protosw_exit();