Bluetooth: Added /proc/net/rfcomm via bt_procfs_init()

Added /proc/net/rfcomm via bt_procfs_init().
Signed-off-by: NMasatake YAMATO <yamato@redhat.com>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

net/bluetooth/rfcomm/sock.c

@@ -1033,8 +1033,17 @@ int __init rfcomm_init_sockets(void)
 		return err;
 
 	err = bt_sock_register(BTPROTO_RFCOMM, &rfcomm_sock_family_ops);
-	if (err < 0)
+	if (err < 0) {
+		BT_ERR("RFCOMM socket layer registration failed");
+		goto error;
+	}
+
+	err = bt_procfs_init(THIS_MODULE, &init_net, "rfcomm", &rfcomm_sk_list, NULL);
+	if (err < 0) {
+		BT_ERR("Failed to create RFCOMM proc file");
+		bt_sock_unregister(BTPROTO_RFCOMM);
 		goto error;
+	}
 
 	if (bt_debugfs) {
 		rfcomm_sock_debugfs = debugfs_create_file("rfcomm", 0444,
@@ -1048,13 +1057,14 @@ int __init rfcomm_init_sockets(void)
 	return 0;
 
 error:
-	BT_ERR("RFCOMM socket layer registration failed");
 	proto_unregister(&rfcomm_proto);
 	return err;
 }
 
 void __exit rfcomm_cleanup_sockets(void)
 {
+	bt_procfs_cleanup(&init_net, "rfcomm");
+
 	debugfs_remove(rfcomm_sock_debugfs);
 
 	if (bt_sock_unregister(BTPROTO_RFCOMM) < 0)