File-copy from v4.4.100

This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Please refer to that tree for all history prior to this point.

Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/include/uapi/linux/isdnif.h b/include/uapi/linux/isdnif.h
new file mode 100644
index 0000000..246138c
--- /dev/null
+++ b/include/uapi/linux/isdnif.h
@@ -0,0 +1,56 @@
+/* $Id: isdnif.h,v 1.43.2.2 2004/01/12 23:08:35 keil Exp $
+ *
+ * Linux ISDN subsystem
+ * Definition of the interface between the subsystem and its low-level drivers.
+ *
+ * Copyright 1994,95,96 by Fritz Elfert (fritz@isdn4linux.de)
+ * Copyright 1995,96    Thinking Objects Software GmbH Wuerzburg
+ * 
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#ifndef _UAPI__ISDNIF_H__
+#define _UAPI__ISDNIF_H__
+
+
+/*
+ * Values for general protocol-selection
+ */
+#define ISDN_PTYPE_UNKNOWN   0   /* Protocol undefined   */
+#define ISDN_PTYPE_1TR6      1   /* german 1TR6-protocol */
+#define ISDN_PTYPE_EURO      2   /* EDSS1-protocol       */
+#define ISDN_PTYPE_LEASED    3   /* for leased lines     */
+#define ISDN_PTYPE_NI1       4   /* US NI-1 protocol     */
+#define ISDN_PTYPE_MAX       7   /* Max. 8 Protocols     */
+
+/*
+ * Values for Layer-2-protocol-selection
+ */
+#define ISDN_PROTO_L2_X75I   0   /* X75/LAPB with I-Frames            */
+#define ISDN_PROTO_L2_X75UI  1   /* X75/LAPB with UI-Frames           */
+#define ISDN_PROTO_L2_X75BUI 2   /* X75/LAPB with UI-Frames           */
+#define ISDN_PROTO_L2_HDLC   3   /* HDLC                              */
+#define ISDN_PROTO_L2_TRANS  4   /* Transparent (Voice)               */
+#define ISDN_PROTO_L2_X25DTE 5   /* X25/LAPB DTE mode                 */
+#define ISDN_PROTO_L2_X25DCE 6   /* X25/LAPB DCE mode                 */
+#define ISDN_PROTO_L2_V11096 7   /* V.110 bitrate adaption 9600 Baud  */
+#define ISDN_PROTO_L2_V11019 8   /* V.110 bitrate adaption 19200 Baud */
+#define ISDN_PROTO_L2_V11038 9   /* V.110 bitrate adaption 38400 Baud */
+#define ISDN_PROTO_L2_MODEM  10  /* Analog Modem on Board */
+#define ISDN_PROTO_L2_FAX    11  /* Fax Group 2/3         */
+#define ISDN_PROTO_L2_HDLC_56K 12   /* HDLC 56k                          */
+#define ISDN_PROTO_L2_MAX    15  /* Max. 16 Protocols                 */
+
+/*
+ * Values for Layer-3-protocol-selection
+ */
+#define ISDN_PROTO_L3_TRANS	0	/* Transparent */
+#define ISDN_PROTO_L3_TRANSDSP	1	/* Transparent with DSP */
+#define ISDN_PROTO_L3_FCLASS2	2	/* Fax Group 2/3 CLASS 2 */
+#define ISDN_PROTO_L3_FCLASS1	3	/* Fax Group 2/3 CLASS 1 */
+#define ISDN_PROTO_L3_MAX	7	/* Max. 8 Protocols */
+
+
+#endif /* _UAPI__ISDNIF_H__ */