isdn: remove isdn4linux

With all isdn4linux hardware drivers gone, this is only a wrapper around
CAPI to support old user space. However, from looking at the mailing
list, it seems that the last time anyone asked about it was in 2014,
when the upgrade from a linux-2.4 installation failed, and mISDN was
suggested as a replacement.

The largest public ISDN network (Deutsche Telekom) was supposed to be
shut down 2018, which must have drastically reduced the number of legacy
installations.

When we last discussed removing i4l in 2016, Karsten Keil suggested
revisiting this in 2018. I guess this is overdue.

Link: http://listserv.isdn4linux.de/pipermail/isdn4linux/2014-October/006165.html
Link: https://patchwork.kernel.org/patch/8484861/#17900371
Link: https://listserv.isdn4linux.de/pipermail/isdn4linux/2019-April/thread.html
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 144 deletions

diff --git a/include/uapi/linux/isdn.h b/include/uapi/linux/isdn.h
deleted file mode 100644
index f371fd52ed75..000000000000
--- a/include/uapi/linux/isdn.h
+++ /dev/null
@@ -1,144 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/* $Id: isdn.h,v 1.125.2.3 2004/02/10 01:07:14 keil Exp $
- *
- * Main header for the Linux ISDN subsystem (linklevel).
- *
- * Copyright 1994,95,96 by Fritz Elfert (fritz@isdn4linux.de)
- * Copyright 1995,96    by Thinking Objects Software GmbH Wuerzburg
- * Copyright 1995,96    by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de)
- * 
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- */
-
-#ifndef _UAPI__ISDN_H__
-#define _UAPI__ISDN_H__
-
-#include <linux/ioctl.h>
-#include <linux/tty.h>
-
-#define ISDN_MAX_DRIVERS    32
-#define ISDN_MAX_CHANNELS   64
-
-/* New ioctl-codes */
-#define IIOCNETAIF  _IO('I',1)
-#define IIOCNETDIF  _IO('I',2)
-#define IIOCNETSCF  _IO('I',3)
-#define IIOCNETGCF  _IO('I',4)
-#define IIOCNETANM  _IO('I',5)
-#define IIOCNETDNM  _IO('I',6)
-#define IIOCNETGNM  _IO('I',7)
-#define IIOCGETSET  _IO('I',8) /* no longer supported */
-#define IIOCSETSET  _IO('I',9) /* no longer supported */
-#define IIOCSETVER  _IO('I',10)
-#define IIOCNETHUP  _IO('I',11)
-#define IIOCSETGST  _IO('I',12)
-#define IIOCSETBRJ  _IO('I',13)
-#define IIOCSIGPRF  _IO('I',14)
-#define IIOCGETPRF  _IO('I',15)
-#define IIOCSETPRF  _IO('I',16)
-#define IIOCGETMAP  _IO('I',17)
-#define IIOCSETMAP  _IO('I',18)
-#define IIOCNETASL  _IO('I',19)
-#define IIOCNETDIL  _IO('I',20)
-#define IIOCGETCPS  _IO('I',21)
-#define IIOCGETDVR  _IO('I',22)
-#define IIOCNETLCR  _IO('I',23) /* dwabc ioctl for LCR from isdnlog */
-#define IIOCNETDWRSET  _IO('I',24) /* dwabc ioctl to reset abc-values to default on a net-interface */
-
-#define IIOCNETALN  _IO('I',32)
-#define IIOCNETDLN  _IO('I',33)
-
-#define IIOCNETGPN  _IO('I',34)
-
-#define IIOCDBGVAR  _IO('I',127)
-
-#define IIOCDRVCTL  _IO('I',128)
-
-/* cisco hdlck device private ioctls */
-#define SIOCGKEEPPERIOD	(SIOCDEVPRIVATE + 0)
-#define SIOCSKEEPPERIOD	(SIOCDEVPRIVATE + 1)
-#define SIOCGDEBSERINT	(SIOCDEVPRIVATE + 2)
-#define SIOCSDEBSERINT	(SIOCDEVPRIVATE + 3)
-
-/* Packet encapsulations for net-interfaces */
-#define ISDN_NET_ENCAP_ETHER      0
-#define ISDN_NET_ENCAP_RAWIP      1
-#define ISDN_NET_ENCAP_IPTYP      2
-#define ISDN_NET_ENCAP_CISCOHDLC  3 /* Without SLARP and keepalive */
-#define ISDN_NET_ENCAP_SYNCPPP    4
-#define ISDN_NET_ENCAP_UIHDLC     5
-#define ISDN_NET_ENCAP_CISCOHDLCK 6 /* With SLARP and keepalive    */
-#define ISDN_NET_ENCAP_X25IFACE   7 /* Documentation/networking/x25-iface.txt */
-#define ISDN_NET_ENCAP_MAX_ENCAP  ISDN_NET_ENCAP_X25IFACE
-
-/* Facility which currently uses an ISDN-channel */
-#define ISDN_USAGE_NONE       0
-#define ISDN_USAGE_RAW        1
-#define ISDN_USAGE_MODEM      2
-#define ISDN_USAGE_NET        3
-#define ISDN_USAGE_VOICE      4
-#define ISDN_USAGE_FAX        5
-#define ISDN_USAGE_MASK       7 /* Mask to get plain usage */
-#define ISDN_USAGE_DISABLED  32 /* This bit is set, if channel is disabled */
-#define ISDN_USAGE_EXCLUSIVE 64 /* This bit is set, if channel is exclusive */
-#define ISDN_USAGE_OUTGOING 128 /* This bit is set, if channel is outgoing  */
-
-#define ISDN_MODEM_NUMREG    24        /* Number of Modem-Registers        */
-#define ISDN_LMSNLEN         255 /* Length of tty's Listen-MSN string */
-#define ISDN_CMSGLEN	     50	 /* Length of CONNECT-Message to add for Modem */
-
-#define ISDN_MSNLEN          32
-#define NET_DV 0x06  /* Data version for isdn_net_ioctl_cfg   */
-#define TTY_DV 0x06  /* Data version for iprofd etc.          */
-
-#define INF_DV 0x01  /* Data version for /dev/isdninfo        */
-
-typedef struct {
-  char drvid[25];
-  unsigned long arg;
-} isdn_ioctl_struct;
-
-typedef struct {
-  char name[10];
-  char phone[ISDN_MSNLEN];
-  int  outgoing;
-} isdn_net_ioctl_phone;
-
-typedef struct {
-  char name[10];     /* Name of interface                     */
-  char master[10];   /* Name of Master for Bundling           */
-  char slave[10];    /* Name of Slave for Bundling            */
-  char eaz[256];     /* EAZ/MSN                               */
-  char drvid[25];    /* DriverId for Bindings                 */
-  int  onhtime;      /* Hangup-Timeout                        */
-  int  charge;       /* Charge-Units                          */
-  int  l2_proto;     /* Layer-2 protocol                      */
-  int  l3_proto;     /* Layer-3 protocol                      */
-  int  p_encap;      /* Encapsulation                         */
-  int  exclusive;    /* Channel, if bound exclusive           */
-  int  dialmax;      /* Dial Retry-Counter                    */
-  int  slavedelay;   /* Delay until slave starts up           */
-  int  cbdelay;      /* Delay before Callback                 */
-  int  chargehup;    /* Flag: Charge-Hangup                   */
-  int  ihup;         /* Flag: Hangup-Timeout on incoming line */
-  int  secure;       /* Flag: Secure                          */
-  int  callback;     /* Flag: Callback                        */
-  int  cbhup;        /* Flag: Reject Call before Callback     */
-  int  pppbind;      /* ippp device for bindings              */
-  int  chargeint;    /* Use fixed charge interval length      */
-  int  triggercps;   /* BogoCPS needed for triggering slave   */
-  int  dialtimeout;  /* Dial-Timeout                          */
-  int  dialwait;     /* Time to wait after failed dial        */
-  int  dialmode;     /* Flag: off / on / auto                 */
-} isdn_net_ioctl_cfg;
-
-#define ISDN_NET_DIALMODE_MASK  0xC0    /* bits for status                */
-#define ISDN_NET_DM_OFF	        0x00    /* this interface is stopped      */
-#define ISDN_NET_DM_MANUAL	0x40    /* this interface is on (manual)  */
-#define ISDN_NET_DM_AUTO	0x80    /* this interface is autodial     */
-#define ISDN_NET_DIALMODE(x) ((&(x))->flags & ISDN_NET_DIALMODE_MASK)
-
-
-#endif /* _UAPI__ISDN_H__ */