Import of Linux 2.2.12 subset (ipv4 stack and related)

1 files changed, 901 insertions, 0 deletions

diff --git a/pfinet/linux-src/include/linux/isdn.h b/pfinet/linux-src/include/linux/isdn.h
new file mode 100644
index 00000000..853f236f
--- /dev/null
+++ b/pfinet/linux-src/include/linux/isdn.h
@@ -0,0 +1,901 @@
+/* $Id: isdn.h,v 1.70 1999/07/31 12:59:58 armin Exp $
+ *
+ * Main header for the Linux ISDN subsystem (linklevel).
+ *
+ * Copyright 1994,95,96 by Fritz Elfert (fritz@wuemaus.franken.de)
+ * Copyright 1995,96    by Thinking Objects Software GmbH Wuerzburg
+ * Copyright 1995,96    by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de)
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
+ *
+ * $Log: isdn.h,v $
+ * Revision 1.70  1999/07/31 12:59:58  armin
+ * Added tty fax capabilities.
+ *
+ * Revision 1.69  1999/07/13 20:47:53  werner
+ * added channel bit ISDN_USAGE_DISABLED for limiting b-channel access.
+ *
+ * Revision 1.68  1999/07/11 17:07:37  armin
+ * Added tty modem register S23.
+ * Added new layer 2 and 3 protocols for Fax and DSP functions.
+ *
+ * Revision 1.67  1999/07/07 10:17:24  detabc
+ * remove unused messages
+ *
+ * Revision 1.66  1999/07/01 08:35:37  keil
+ * compatibility to 2.3
+ *
+ * Revision 1.65  1999/06/10 11:51:27  paul
+ * fixed comment for NET_DV
+ *
+ * Revision 1.64  1999/04/18 14:57:14  fritz
+ * Removed TIMRU stuff
+ *
+ * Revision 1.63  1999/04/18 14:07:18  fritz
+ * Removed TIMRU stuff.
+ *
+ * Revision 1.62  1999/04/12 13:16:54  fritz
+ * Changes from 2.0 tree.
+ *
+ * Revision 1.61  1999/03/02 11:43:21  armin
+ * Added variable to store connect-message of Modem.
+ * Added Timer-define for RegS7 (Wait for Carrier).
+ *
+ * Revision 1.60  1998/10/25 14:50:29  fritz
+ * Backported from MIPS (Cobalt).
+ *
+ * Revision 1.59  1998/10/23 10:18:55  paul
+ * Implementation of "dialmode" (successor of "status")
+ * You also need current isdnctrl for this!
+ *
+ * Revision 1.58  1998/10/23 10:10:06  fritz
+ * Test-Checkin
+ *
+ * Revision 1.57  1998/08/31 21:10:01  he
+ * new ioctl IIOCNETGPN for /dev/isdninfo (get network interface'
+ *     peer phone number)
+ *
+ * Revision 1.56  1998/07/26 18:46:52  armin
+ * Added silence detection in voice receive mode.
+ *
+ * Revision 1.55  1998/06/26 15:13:17  fritz
+ * Added handling of STAT_ICALL with incomplete CPN.
+ * Added AT&L for ttyI emulator.
+ * Added more locking stuff in tty_write.
+ *
+ * Revision 1.54  1998/06/18 23:32:01  fritz
+ * Replaced cli()/restore_flags() in isdn_tty_write() by locking.
+ * Removed direct-senddown feature in isdn_tty_write because it will
+ * never succeed with locking and is useless anyway.
+ *
+ * Revision 1.53  1998/06/17 19:51:51  he
+ * merged with 2.1.10[34] (cosmetics and udelay() -> mdelay())
+ * brute force fix to avoid Ugh's in isdn_tty_write()
+ * cleaned up some dead code
+ *
+ * Revision 1.46  1998/04/14 16:28:59  he
+ * Fixed user space access with interrupts off and remaining
+ * copy_{to,from}_user() -> -EFAULT return codes
+ *
+ * Revision 1.45  1998/03/24 16:33:12  hipp
+ * More CCP changes. BSD compression now "works" on a local loopback link.
+ * Moved some isdn_ppp stuff from isdn.h to isdn_ppp.h
+ *
+ * Revision 1.44  1998/03/22 18:50:56  hipp
+ * Added BSD Compression for syncPPP .. UNTESTED at the moment
+ *
+ * Revision 1.43  1998/03/09 17:46:44  he
+ * merged in 2.1.89 changes
+ *
+ *
+ * Revision 1.40  1998/03/08 01:08:29  fritz
+ * Increased NET_DV because of TIMRU
+ *
+ * Revision 1.39  1998/03/07 22:42:49  fritz
+ * Starting generic module support (Nothing usable yet).
+ *
+ * Revision 1.38  1998/03/07 18:21:29  cal
+ * Dynamic Timeout-Rule-Handling vs. 971110 included
+ *
+ * Revision 1.37  1998/02/22 19:45:24  fritz
+ * Some changes regarding V.110
+ *
+ * Revision 1.36  1998/02/20 17:35:55  fritz
+ * Added V.110 stuff.
+ *
+ * Revision 1.35  1998/01/31 22:14:14  keil
+ * changes for 2.1.82
+ *
+ * Revision 1.34  1997/10/09 21:28:11  fritz
+ * New HL<->LL interface:
+ *   New BSENT callback with nr. of bytes included.
+ *   Sending without ACK.
+ *   New L1 error status (not yet in use).
+ *   Cleaned up obsolete structures.
+ * Implemented Cisco-SLARP.
+ * Changed local net-interface data to be dynamically allocated.
+ * Removed old 2.0 compatibility stuff.
+ *
+ * Revision 1.33  1997/08/21 14:44:22  fritz
+ * Moved triggercps to end of struct for backwards-compatibility.
+ *
+ * Revision 1.32  1997/08/21 09:49:46  fritz
+ * Increased NET_DV
+ *
+ * Revision 1.31  1997/06/22 11:57:07  fritz
+ * Added ability to adjust slave triggerlevel.
+ *
+ * Revision 1.30  1997/06/17 13:07:23  hipp
+ * compression changes , MP changes
+ *
+ * Revision 1.29  1997/05/27 15:18:02  fritz
+ * Added changes for recent 2.1.x kernels:
+ *   changed return type of isdn_close
+ *   queue_task_* -> queue_task
+ *   clear/set_bit -> test_and_... where apropriate.
+ *   changed type of hard_header_cache parameter.
+ *
+ * Revision 1.28  1997/03/07 01:33:01  fritz
+ * Added proper ifdef's for CONFIG_ISDN_AUDIO
+ *
+ * Revision 1.27  1997/03/05 21:11:49  fritz
+ * Minor fixes.
+ *
+ * Revision 1.26  1997/02/28 02:37:53  fritz
+ * Added some comments.
+ *
+ * Revision 1.25  1997/02/23 16:54:23  hipp
+ * some initial changes for future PPP compresion
+ *
+ * Revision 1.24  1997/02/18 09:42:45  fritz
+ * Bugfix: Increased ISDN_MODEM_ANZREG.
+ * Increased TTY_DV.
+ *
+ * Revision 1.23  1997/02/10 22:07:13  fritz
+ * Added 2 modem registers for numbering plan and screening info.
+ *
+ * Revision 1.22  1997/02/03 23:42:08  fritz
+ * Added ISDN_TIMER_RINGING
+ * Misc. changes for Kernel 2.1.X compatibility
+ *
+ * Revision 1.21  1997/01/17 01:19:10  fritz
+ * Applied chargeint patch.
+ *
+ * Revision 1.20  1997/01/17 00:41:19  fritz
+ * Increased TTY_DV.
+ *
+ * Revision 1.19  1997/01/14 01:41:07  fritz
+ * Added ATI2 related variables.
+ * Added variables for audio support in skbuffs.
+ *
+ * Revision 1.18  1996/11/06 17:37:50  keil
+ * more changes for 2.1.X
+ *
+ * Revision 1.17  1996/09/07 12:53:57  hipp
+ * moved a few isdn_ppp.c specific defines to drives/isdn/isdn_ppp.h
+ *
+ * Revision 1.16  1996/08/12 16:20:56  hipp
+ * renamed ppp_minor to ppp_slot
+ *
+ * Revision 1.15  1996/06/15 14:56:57  fritz
+ * Added version signatures for data structures used
+ * by userlevel programs.
+ *
+ * Revision 1.14  1996/06/06 21:24:23  fritz
+ * Started adding support for suspend/resume.
+ *
+ * Revision 1.13  1996/06/05 02:18:20  fritz
+ * Added DTMF decoding stuff.
+ *
+ * Revision 1.12  1996/06/03 19:55:08  fritz
+ * Fixed typos.
+ *
+ * Revision 1.11  1996/05/31 01:37:47  fritz
+ * Minor changes, due to changes in isdn_tty.c
+ *
+ * Revision 1.10  1996/05/18 01:37:18  fritz
+ * Added spelling corrections and some minor changes
+ * to stay in sync with kernel.
+ *
+ * Revision 1.9  1996/05/17 03:58:20  fritz
+ * Added flags for DLE handling.
+ *
+ * Revision 1.8  1996/05/11 21:49:55  fritz
+ * Removed queue management variables.
+ * Changed queue management to use sk_buffs.
+ *
+ * Revision 1.7  1996/05/07 09:10:06  fritz
+ * Reorganized tty-related structs.
+ *
+ * Revision 1.6  1996/05/06 11:38:27  hipp
+ * minor change in ippp struct
+ *
+ * Revision 1.5  1996/04/30 11:03:16  fritz
+ * Added Michael's ippp-bind patch.
+ *
+ * Revision 1.4  1996/04/29 23:00:02  fritz
+ * Added variables for voice-support.
+ *
+ * Revision 1.3  1996/04/20 16:54:58  fritz
+ * Increased maximum number of channels.
+ * Added some flags for isdn_net to handle callback more reliable.
+ * Fixed delay-definitions to be more accurate.
+ * Misc. typos
+ *
+ * Revision 1.2  1996/02/11 02:10:02  fritz
+ * Changed IOCTL-names
+ * Added rx_netdev, st_netdev, first_skb, org_hcb, and org_hcu to
+ * Netdevice-local struct.
+ *
+ * Revision 1.1  1996/01/10 20:55:07  fritz
+ * Initial revision
+ *
+ */
+
+#ifndef isdn_h
+#define isdn_h
+
+#include <linux/isdn_compat.h>
+#include <linux/config.h>
+#include <linux/ioctl.h>
+
+#define ISDN_TTY_MAJOR    43
+#define ISDN_TTYAUX_MAJOR 44
+#define ISDN_MAJOR        45
+
+/* The minor-devicenumbers for Channel 0 and 1 are used as arguments for
+ * physical Channel-Mapping, so they MUST NOT be changed without changing
+ * the correspondent code in isdn.c
+ */
+
+#ifdef CONFIG_COBALT_MICRO_SERVER
+/* Save memory */
+#define ISDN_MAX_DRIVERS    2
+#define ISDN_MAX_CHANNELS   8
+#else
+#define ISDN_MAX_DRIVERS    32
+#define ISDN_MAX_CHANNELS   64
+#endif
+#define ISDN_MINOR_B        0
+#define ISDN_MINOR_BMAX     (ISDN_MAX_CHANNELS-1)
+#define ISDN_MINOR_CTRL     64
+#define ISDN_MINOR_CTRLMAX  (64 + (ISDN_MAX_CHANNELS-1))
+#define ISDN_MINOR_PPP      128
+#define ISDN_MINOR_PPPMAX   (128 + (ISDN_MAX_CHANNELS-1))
+#define ISDN_MINOR_STATUS   255
+
+/* 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 IIOCNETALN  _IO('I',32)
+#define IIOCNETDLN  _IO('I',33)
+
+#define IIOCNETGPN  _IO('I',34)
+
+#define IIOCDBGVAR  _IO('I',127)
+
+#define IIOCDRVCTL  _IO('I',128)
+
+/* 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_ANZREG    24        /* Number of Modem-Registers        */
+#define ISDN_MSNLEN          20
+#define ISDN_LMSNLEN         255 /* Length of tty's Listen-MSN string */
+#define ISDN_CMSGLEN	     50	 /* Length of CONNECT-Message to add for Modem */
+
+typedef struct {
+  char drvid[25];
+  unsigned long arg;
+} isdn_ioctl_struct;
+
+typedef struct {
+  unsigned long isdndev;
+  unsigned long atmodem[ISDN_MAX_CHANNELS];
+  unsigned long info[ISDN_MAX_CHANNELS];
+} debugvar_addr;
+
+typedef struct {
+  char name[10];
+  char phone[ISDN_MSNLEN];
+  int  outgoing;
+} isdn_net_ioctl_phone;
+
+#define NET_DV 0x05  /* Data version for isdn_net_ioctl_cfg   */
+#define TTY_DV 0x05  /* Data version for iprofd etc.          */
+#define INF_DV 0x01  /* Data version for /dev/isdninfo        */
+
+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)
+
+#ifdef __KERNEL__
+
+#ifndef STANDALONE
+#include <linux/config.h>
+#endif
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/major.h>
+#include <asm/segment.h>
+#include <asm/io.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/malloc.h>
+#include <linux/timer.h>
+#include <linux/wait.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial_reg.h>
+#include <linux/fcntl.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/ip.h>
+#include <linux/in.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/tcp.h>
+
+#ifdef CONFIG_ISDN_PPP
+
+#ifdef CONFIG_ISDN_PPP_VJ
+#  include <net/slhc_vj.h>
+#endif
+
+#include <linux/ppp_defs.h>
+#include <linux/if_ppp.h>
+#include <linux/if_pppvar.h>
+
+#include <linux/isdn_ppp.h>
+#endif
+
+#ifdef CONFIG_ISDN_X25
+#  include <linux/concap.h>
+#endif
+
+#include <linux/isdnif.h>
+
+
+#define ISDN_DRVIOCTL_MASK       0x7f  /* Mask for Device-ioctl */
+
+/* Until now unused */
+#define ISDN_SERVICE_VOICE 1
+#define ISDN_SERVICE_AB    1<<1 
+#define ISDN_SERVICE_X21   1<<2
+#define ISDN_SERVICE_G4    1<<3
+#define ISDN_SERVICE_BTX   1<<4
+#define ISDN_SERVICE_DFUE  1<<5
+#define ISDN_SERVICE_X25   1<<6
+#define ISDN_SERVICE_TTX   1<<7
+#define ISDN_SERVICE_MIXED 1<<8
+#define ISDN_SERVICE_FW    1<<9
+#define ISDN_SERVICE_GTEL  1<<10
+#define ISDN_SERVICE_BTXN  1<<11
+#define ISDN_SERVICE_BTEL  1<<12
+
+/* Macros checking plain usage */
+#define USG_NONE(x)         ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NONE)
+#define USG_RAW(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_RAW)
+#define USG_MODEM(x)        ((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM)
+#define USG_VOICE(x)        ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)
+#define USG_NET(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NET)
+#define USG_FAX(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_FAX)
+#define USG_OUTGOING(x)     ((x & ISDN_USAGE_OUTGOING)==ISDN_USAGE_OUTGOING)
+#define USG_MODEMORVOICE(x) (((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM) || \
+                             ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)     )
+
+/* Timer-delays and scheduling-flags */
+#define ISDN_TIMER_RES         3                         /* Main Timer-Resolution   */
+#define ISDN_TIMER_02SEC       (HZ/(ISDN_TIMER_RES+1)/5) /* Slow-Timer1 .2 sec      */
+#define ISDN_TIMER_1SEC        (HZ/(ISDN_TIMER_RES+1))   /* Slow-Timer2 1 sec       */
+#define ISDN_TIMER_RINGING     5 /* tty RINGs = ISDN_TIMER_1SEC * this factor       */
+#define ISDN_TIMER_KEEPINT    10 /* Cisco-Keepalive = ISDN_TIMER_1SEC * this factor */
+#define ISDN_TIMER_MODEMREAD   1
+#define ISDN_TIMER_MODEMPLUS   2
+#define ISDN_TIMER_MODEMRING   4
+#define ISDN_TIMER_MODEMXMIT   8
+#define ISDN_TIMER_NETDIAL    16 
+#define ISDN_TIMER_NETHANGUP  32
+#define ISDN_TIMER_IPPP       64 
+#define ISDN_TIMER_KEEPALIVE 128 /* Cisco-Keepalive */
+#define ISDN_TIMER_CARRIER   256 /* Wait for Carrier */
+#define ISDN_TIMER_FAST      (ISDN_TIMER_MODEMREAD | ISDN_TIMER_MODEMPLUS | \
+                              ISDN_TIMER_MODEMXMIT)
+#define ISDN_TIMER_SLOW      (ISDN_TIMER_MODEMRING | ISDN_TIMER_NETHANGUP | \
+                              ISDN_TIMER_NETDIAL | ISDN_TIMER_KEEPALIVE | \
+                              ISDN_TIMER_CARRIER)
+
+/* Timeout-Values for isdn_net_dial() */
+#define ISDN_TIMER_DTIMEOUT10 (10*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
+#define ISDN_TIMER_DTIMEOUT15 (15*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
+#define ISDN_TIMER_DTIMEOUT60 (60*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
+
+/* GLOBAL_FLAGS */
+#define ISDN_GLOBAL_STOPPED 1
+
+/*=================== Start of ip-over-ISDN stuff =========================*/
+
+/* Feature- and status-flags for a net-interface */
+#define ISDN_NET_CONNECTED  0x01       /* Bound to ISDN-Channel             */
+#define ISDN_NET_SECURE     0x02       /* Accept calls from phonelist only  */
+#define ISDN_NET_CALLBACK   0x04       /* activate callback                 */
+#define ISDN_NET_CBHUP      0x08       /* hangup before callback            */
+#define ISDN_NET_CBOUT      0x10       /* remote machine does callback      */
+#if 0
+/* Unused??? */
+#define ISDN_NET_CLONE      0x08       /* clone a tmp interface when called */
+#define ISDN_NET_TMP        0x10       /* tmp interface until getting an IP */
+#define ISDN_NET_DYNAMIC    0x20       /* this link is dynamically allocated */
+#endif
+
+#define ISDN_NET_MAGIC      0x49344C02 /* for paranoia-checking             */
+
+/* Phone-list-element */
+typedef struct {
+  void *next;
+  char num[ISDN_MSNLEN];
+} isdn_net_phone;
+
+/*
+   Principles when extending structures for generic encapsulation protocol
+   ("concap") support:
+   - Stuff which is hardware specific (here i4l-specific) goes in 
+     the netdev -> local structure (here: isdn_net_local)
+   - Stuff which is encapsulation protocol specific goes in the structure
+     which holds the linux device structure (here: isdn_net_device)
+*/
+
+/* Local interface-data */
+typedef struct isdn_net_local_s {
+  ulong                  magic;
+  char                   name[10];     /* Name of device                   */
+  struct enet_statistics stats;        /* Ethernet Statistics              */
+  int                    isdn_device;  /* Index to isdn-device             */
+  int                    isdn_channel; /* Index to isdn-channel            */
+  int			 ppp_slot;     /* PPPD device slot number          */
+  int                    pre_device;   /* Preselected isdn-device          */
+  int                    pre_channel;  /* Preselected isdn-channel         */
+  int                    exclusive;    /* If non-zero idx to reserved chan.*/
+  int                    flags;        /* Connection-flags                 */
+  int                    dialretry;    /* Counter for Dialout-retries      */
+  int                    dialmax;      /* Max. Number of Dial-retries      */
+  int                    cbdelay;      /* Delay before Callback starts     */
+  int                    dtimer;       /* Timeout-counter for dialing      */
+  char                   msn[ISDN_MSNLEN]; /* MSNs/EAZs for this interface */
+  u_char                 cbhup;        /* Flag: Reject Call before Callback*/
+  u_char                 dialstate;    /* State for dialing                */
+  u_char                 p_encap;      /* Packet encapsulation             */
+                                       /*   0 = Ethernet over ISDN         */
+				       /*   1 = RAW-IP                     */
+                                       /*   2 = IP with type field         */
+  u_char                 l2_proto;     /* Layer-2-protocol                 */
+				       /* See ISDN_PROTO_L2..-constants in */
+                                       /* isdnif.h                         */
+                                       /*   0 = X75/LAPB with I-Frames     */
+				       /*   1 = X75/LAPB with UI-Frames    */
+				       /*   2 = X75/LAPB with BUI-Frames   */
+				       /*   3 = HDLC                       */
+  u_char                 l3_proto;     /* Layer-3-protocol                 */
+				       /* See ISDN_PROTO_L3..-constants in */
+                                       /* isdnif.h                         */
+                                       /*   0 = Transparent                */
+  int                    huptimer;     /* Timeout-counter for auto-hangup  */
+  int                    charge;       /* Counter for charging units       */
+  int                    chargetime;   /* Timer for Charging info          */
+  int                    hupflags;     /* Flags for charge-unit-hangup:    */
+				       /* bit0: chargeint is invalid       */
+				       /* bit1: Getting charge-interval    */
+                                       /* bit2: Do charge-unit-hangup      */
+                                       /* bit3: Do hangup even on incoming */
+  int                    outgoing;     /* Flag: outgoing call              */
+  int                    onhtime;      /* Time to keep link up             */
+  int                    chargeint;    /* Interval between charge-infos    */
+  int                    onum;         /* Flag: at least 1 outgoing number */
+  int                    cps;          /* current speed of this interface  */
+  int                    transcount;   /* byte-counter for cps-calculation */
+  int                    sqfull;       /* Flag: netdev-queue overloaded    */
+  ulong                  sqfull_stamp; /* Start-Time of overload           */
+  ulong                  slavedelay;   /* Dynamic bundling delaytime       */
+  int                    triggercps;   /* BogoCPS needed for trigger slave */
+  struct device          *srobin;      /* Ptr to Master device for slaves  */
+  isdn_net_phone         *phone[2];    /* List of remote-phonenumbers      */
+				       /* phone[0] = Incoming Numbers      */
+				       /* phone[1] = Outgoing Numbers      */
+  isdn_net_phone         *dial;        /* Pointer to dialed number         */
+  struct device          *master;      /* Ptr to Master device for slaves  */
+  struct device          *slave;       /* Ptr to Slave device for masters  */
+  struct isdn_net_local_s *next;       /* Ptr to next link in bundle       */
+  struct isdn_net_local_s *last;       /* Ptr to last link in bundle       */
+  struct isdn_net_dev_s  *netdev;      /* Ptr to netdev                    */
+  struct sk_buff         *first_skb;   /* Ptr to skb that triggers dialing */
+  struct sk_buff         *sav_skb;     /* Ptr to skb, rejected by LL-driver*/
+                                       /* Ptr to orig. hard_header_cache   */
+  int                    (*org_hhc)(
+				    struct neighbour *neigh,
+				    struct hh_cache *hh);
+                                       /* Ptr to orig. header_cache_update */
+  void                   (*org_hcu)(struct hh_cache *,
+				    struct device *,
+                                    unsigned char *);
+  int  pppbind;                        /* ippp device for bindings         */
+  int					dialtimeout;	/* How long shall we try on dialing? (jiffies) */
+  int					dialwait;		/* How long shall we wait after failed attempt? (jiffies) */
+  ulong					dialstarted;	/* jiffies of first dialing-attempt */
+  ulong					dialwait_timer;	/* jiffies of earliest next dialing-attempt */
+  int					huptimeout;		/* How long will the connection be up? (seconds) */
+#ifdef CONFIG_ISDN_X25
+  struct concap_device_ops *dops;      /* callbacks used by encapsulator   */
+#endif
+  int  cisco_loop;                     /* Loop counter for Cisco-SLARP     */
+  ulong cisco_myseq;                   /* Local keepalive seq. for Cisco   */
+  ulong cisco_yourseq;                 /* Remote keepalive seq. for Cisco  */
+} isdn_net_local;
+
+/* the interface itself */
+typedef struct isdn_net_dev_s {
+  isdn_net_local *local;
+  isdn_net_local *queue;
+  void           *next;                /* Pointer to next isdn-interface   */
+  struct device   dev;	       /* interface to upper levels        */
+#ifdef CONFIG_ISDN_PPP
+  struct mpqueue *mp_last; 
+  struct ippp_bundle ib;
+#endif
+#ifdef CONFIG_ISDN_X25
+  struct concap_proto  *cprot; /* connection oriented encapsulation protocol */
+#endif
+
+} isdn_net_dev;
+
+/*===================== End of ip-over-ISDN stuff ===========================*/
+
+/*======================= Start of ISDN-tty stuff ===========================*/
+
+#define ISDN_ASYNC_MAGIC          0x49344C01 /* for paranoia-checking        */
+#define ISDN_ASYNC_INITIALIZED	  0x80000000 /* port was initialized         */
+#define ISDN_ASYNC_CALLOUT_ACTIVE 0x40000000 /* Call out device active       */
+#define ISDN_ASYNC_NORMAL_ACTIVE  0x20000000 /* Normal device active         */
+#define ISDN_ASYNC_CLOSING	  0x08000000 /* Serial port is closing       */
+#define ISDN_ASYNC_CTS_FLOW	  0x04000000 /* Do CTS flow control          */
+#define ISDN_ASYNC_CHECK_CD	  0x02000000 /* i.e., CLOCAL                 */
+#define ISDN_ASYNC_HUP_NOTIFY         0x0001 /* Notify tty on hangups/closes */
+#define ISDN_ASYNC_SESSION_LOCKOUT    0x0100 /* Lock cua opens on session    */
+#define ISDN_ASYNC_PGRP_LOCKOUT       0x0200 /* Lock cua opens on pgrp       */
+#define ISDN_ASYNC_CALLOUT_NOHUP      0x0400 /* No hangup for cui            */
+#define ISDN_ASYNC_SPLIT_TERMIOS      0x0008 /* Sep. termios for dialin/out  */
+#define ISDN_SERIAL_XMIT_SIZE           1024 /* Default bufsize for write    */
+#define ISDN_SERIAL_XMIT_MAX            4000 /* Maximum bufsize for write    */
+#define ISDN_SERIAL_TYPE_NORMAL            1
+#define ISDN_SERIAL_TYPE_CALLOUT           2
+
+#ifdef CONFIG_ISDN_AUDIO
+/* For using sk_buffs with audio we need some private variables
+ * within each sk_buff. For this purpose, we declare a struct here,
+ * and put it always at skb->head. A few macros help accessing the
+ * variables. Of course, we need to check skb_headroom prior to
+ * any access.
+ */
+typedef struct isdn_audio_skb {
+  unsigned short dle_count;
+  unsigned char  lock;
+} isdn_audio_skb;
+
+#define ISDN_AUDIO_SKB_DLECOUNT(skb) (((isdn_audio_skb*)skb->head)->dle_count)
+#define ISDN_AUDIO_SKB_LOCK(skb) (((isdn_audio_skb*)skb->head)->lock)
+#endif
+
+/* Private data of AT-command-interpreter */
+typedef struct atemu {
+	u_char       profile[ISDN_MODEM_ANZREG]; /* Modem-Regs. Profile 0              */
+	u_char       mdmreg[ISDN_MODEM_ANZREG];  /* Modem-Registers                    */
+	char         pmsn[ISDN_MSNLEN];          /* EAZ/MSNs Profile 0                 */
+	char         msn[ISDN_MSNLEN];           /* EAZ/MSN                            */
+	char         plmsn[ISDN_LMSNLEN];        /* Listening MSNs Profile 0           */
+	char         lmsn[ISDN_LMSNLEN];         /* Listening MSNs                     */
+	char         cpn[ISDN_MSNLEN];           /* CalledPartyNumber on incoming call */
+	char         connmsg[ISDN_CMSGLEN];	 /* CONNECT-Msg from HL-Driver	       */
+#ifdef CONFIG_ISDN_AUDIO
+	u_char       vpar[10];                   /* Voice-parameters                   */
+	int          lastDLE;                    /* Flag for voice-coding: DLE seen    */
+#endif
+	int          mdmcmdl;                    /* Length of Modem-Commandbuffer      */
+	int          pluscount;                  /* Counter for +++ sequence           */
+	int          lastplus;                   /* Timestamp of last +                */
+	int	     carrierwait;                /* Seconds of carrier waiting         */
+	char         mdmcmd[255];                /* Modem-Commandbuffer                */
+	unsigned int charge;                     /* Charge units of current connection */
+} atemu;
+
+/* Private data (similar to async_struct in <linux/serial.h>) */
+typedef struct modem_info {
+  int			magic;
+  int			flags;		 /* defined in tty.h               */
+  int			x_char;		 /* xon/xoff character             */
+  int			mcr;		 /* Modem control register         */
+  int                   msr;             /* Modem status register          */
+  int                   lsr;             /* Line status register           */
+  int			line;
+  int			count;		 /* # of fd on device              */
+  int			blocked_open;	 /* # of blocked opens             */
+  long			session;	 /* Session of opening process     */
+  long			pgrp;		 /* pgrp of opening process        */
+  int                   online;          /* 1 = B-Channel is up, drop data */
+					 /* 2 = B-Channel is up, deliver d.*/
+  int                   dialing;         /* Dial in progress or ATA        */
+  int                   rcvsched;        /* Receive needs schedule         */
+  int                   isdn_driver;	 /* Index to isdn-driver           */
+  int                   isdn_channel;    /* Index to isdn-channel          */
+  int                   drv_index;       /* Index to dev->usage            */
+  int                   ncarrier;        /* Flag: schedule NO CARRIER      */
+  unsigned char         last_cause[8];   /* Last cause message             */
+  unsigned char         last_num[ISDN_MSNLEN];
+	                                 /* Last phone-number              */
+  unsigned char         last_l2;         /* Last layer-2 protocol          */
+  unsigned char         last_si;         /* Last service                   */
+  unsigned char         last_lhup;       /* Last hangup local?             */
+  unsigned char         last_dir;        /* Last direction (in or out)     */
+  struct timer_list     nc_timer;        /* Timer for delayed NO CARRIER   */
+  int                   send_outstanding;/* # of outstanding send-requests */
+  int                   xmit_size;       /* max. # of chars in xmit_buf    */
+  int                   xmit_count;      /* # of chars in xmit_buf         */
+  unsigned char         *xmit_buf;       /* transmit buffer                */
+  struct sk_buff_head   xmit_queue;      /* transmit queue                 */
+  atomic_t              xmit_lock;       /* Semaphore for isdn_tty_write   */
+#ifdef CONFIG_ISDN_AUDIO
+  int                   vonline;         /* Voice-channel status           */
+					 /* Bit 0 = recording              */
+					 /* Bit 1 = playback               */
+					 /* Bit 2 = playback, DLE-ETX seen */
+  struct sk_buff_head   dtmf_queue;      /* queue for dtmf results         */
+  void                  *adpcms;         /* state for adpcm decompression  */
+  void                  *adpcmr;         /* state for adpcm compression    */
+  void                  *dtmf_state;     /* state for dtmf decoder         */
+  void                  *silence_state;  /* state for silence detection    */
+#endif
+#ifdef CONFIG_ISDN_TTY_FAX
+  struct T30_s		*fax;		 /* T30 Fax Group 3 data/interface */
+  int			faxonline;	 /* Fax-channel status             */
+#endif
+  struct tty_struct 	*tty;            /* Pointer to corresponding tty   */
+  atemu                 emu;             /* AT-emulator data               */
+  struct termios	normal_termios;  /* For saving termios structs     */
+  struct termios	callout_termios;
+#ifdef COMPAT_HAS_NEW_WAITQ
+  wait_queue_head_t	open_wait, close_wait;
+#else
+  struct wait_queue	*open_wait;
+  struct wait_queue	*close_wait;
+#endif
+  struct semaphore      write_sem;
+} modem_info;
+
+#define ISDN_MODEM_WINSIZE 8
+
+/* Description of one ISDN-tty */
+typedef struct {
+  int                refcount;			   /* Number of opens        */
+  struct tty_driver  tty_modem;			   /* tty-device             */
+  struct tty_driver  cua_modem;			   /* cua-device             */
+  struct tty_struct  *modem_table[ISDN_MAX_CHANNELS]; /* ?? copied from Orig */
+  struct termios     *modem_termios[ISDN_MAX_CHANNELS];
+  struct termios     *modem_termios_locked[ISDN_MAX_CHANNELS];
+  modem_info         info[ISDN_MAX_CHANNELS];	   /* Private data           */
+} modem;
+
+/*======================= End of ISDN-tty stuff ============================*/
+
+/*======================== Start of V.110 stuff ============================*/
+#define V110_BUFSIZE 1024
+
+typedef struct {
+	int nbytes;                    /* 1 Matrixbyte -> nbytes in stream     */
+	int nbits;                     /* Number of used bits in streambyte    */
+	unsigned char key;             /* Bitmask in stream eg. 11 (nbits=2)   */
+	int decodelen;                 /* Amount of data in decodebuf          */
+	int SyncInit;                  /* Number of sync frames to send        */
+	unsigned char *OnlineFrame;    /* Precalculated V110 idle frame        */
+	unsigned char *OfflineFrame;   /* Precalculated V110 sync Frame        */
+	int framelen;                  /* Length of frames                     */
+	int skbuser;                   /* Number of unacked userdata skbs      */
+	int skbidle;                   /* Number of unacked idle/sync skbs     */
+	int introducer;                /* Local vars for decoder               */
+	int dbit;
+	unsigned char b;
+	int skbres;                    /* space to reserve in outgoing skb     */
+	int maxsize;                   /* maxbufsize of lowlevel driver        */
+	unsigned char *encodebuf;      /* temporary buffer for encoding        */
+	unsigned char decodebuf[V110_BUFSIZE]; /* incomplete V110 matrices     */
+} isdn_v110_stream;
+
+/*========================= End of V.110 stuff =============================*/
+
+/*======================= Start of general stuff ===========================*/
+
+typedef struct {
+	char *next;
+	char *private;
+} infostruct;
+
+typedef struct isdn_module {
+	struct isdn_module *prev;
+	struct isdn_module *next;
+	char *name;
+	int (*get_free_channel)(int, int, int, int, int);
+	int (*free_channel)(int, int, int);
+	int (*status_callback)(isdn_ctrl *);
+	int (*command)(isdn_ctrl *);
+	int (*receive_callback)(int, int, struct sk_buff *);
+	int (*writebuf_skb)(int, int, int, struct sk_buff *);
+	int (*net_start_xmit)(struct sk_buff *, struct device *);
+	int (*net_receive)(struct device *, struct sk_buff *);
+	int (*net_open)(struct device *);
+	int (*net_close)(struct device *);
+	int priority;
+} isdn_module;
+
+#define DRV_FLAG_RUNNING 1
+#define DRV_FLAG_REJBUS  2
+#define DRV_FLAG_LOADED  4
+
+/* Description of hardware-level-driver */
+typedef struct {
+	ulong               online;           /* Channel-Online flags             */
+	ulong               flags;            /* Misc driver Flags                */
+	int                 locks;            /* Number of locks for this driver  */
+	int                 channels;         /* Number of channels               */
+#ifdef COMPAT_HAS_NEW_WAITQ
+	wait_queue_head_t   st_waitq;         /* Wait-Queue for status-read's     */
+#else
+	struct wait_queue  *st_waitq;         /* Wait-Queue for status-read's     */
+#endif
+	int                 maxbufsize;       /* Maximum Buffersize supported     */
+	unsigned long       pktcount;         /* Until now: unused                */
+	int                 stavail;          /* Chars avail on Status-device     */
+	isdn_if            *interface;        /* Interface to driver              */
+	int                *rcverr;           /* Error-counters for B-Ch.-receive */
+	int                *rcvcount;         /* Byte-counters for B-Ch.-receive  */
+#ifdef CONFIG_ISDN_AUDIO
+	unsigned long      DLEflag;           /* Flags: Insert DLE at next read   */
+#endif
+	struct sk_buff_head *rpqueue;         /* Pointers to start of Rcv-Queue   */
+#ifdef COMPAT_HAS_NEW_WAITQ
+	wait_queue_head_t  *rcv_waitq;       /* Wait-Queues for B-Channel-Reads  */
+	wait_queue_head_t  *snd_waitq;       /* Wait-Queue for B-Channel-Send's  */
+#else
+	struct wait_queue  **rcv_waitq;       /* Wait-Queues for B-Channel-Reads  */
+	struct wait_queue  **snd_waitq;       /* Wait-Queue for B-Channel-Send's  */
+#endif
+	char               msn2eaz[10][ISDN_MSNLEN];  /* Mapping-Table MSN->EAZ   */
+} driver;
+
+/* Main driver-data */
+typedef struct isdn_devt {
+	unsigned short    flags;		       /* Bitmapped Flags:           */
+	/*                            */
+	int               drivers;		       /* Current number of drivers  */
+	int               channels;		       /* Current number of channels */
+	int               net_verbose;               /* Verbose-Flag               */
+	int               modempoll;		       /* Flag: tty-read active      */
+	int               tflags;                    /* Timer-Flags:               */
+	/*  see ISDN_TIMER_..defines  */
+	int               global_flags;
+	infostruct        *infochain;                /* List of open info-devs.    */
+#ifdef COMPAT_HAS_NEW_WAITQ
+	wait_queue_head_t info_waitq;               /* Wait-Queue for isdninfo    */
+#else
+	struct wait_queue *info_waitq;               /* Wait-Queue for isdninfo    */
+#endif
+	struct timer_list timer;		       /* Misc.-function Timer       */
+	int               chanmap[ISDN_MAX_CHANNELS];/* Map minor->device-channel  */
+	int               drvmap[ISDN_MAX_CHANNELS]; /* Map minor->driver-index    */
+	int               usage[ISDN_MAX_CHANNELS];  /* Used by tty/ip/voice       */
+	char              num[ISDN_MAX_CHANNELS][ISDN_MSNLEN];
+	/* Remote number of active ch.*/
+	int               m_idx[ISDN_MAX_CHANNELS];  /* Index for mdm....          */
+	driver            *drv[ISDN_MAX_DRIVERS];    /* Array of drivers           */
+	isdn_net_dev      *netdev;		       /* Linked list of net-if's    */
+	char              drvid[ISDN_MAX_DRIVERS][20];/* Driver-ID                 */
+	struct task_struct *profd;                   /* For iprofd                 */
+	modem             mdm;		       /* tty-driver-data            */
+	isdn_net_dev      *rx_netdev[ISDN_MAX_CHANNELS]; /* rx netdev-pointers     */
+	isdn_net_dev      *st_netdev[ISDN_MAX_CHANNELS]; /* stat netdev-pointers   */
+	ulong             ibytes[ISDN_MAX_CHANNELS]; /* Statistics incoming bytes  */
+	ulong             obytes[ISDN_MAX_CHANNELS]; /* Statistics outgoing bytes  */
+	int               v110emu[ISDN_MAX_CHANNELS];/* V.110 emulator-mode 0=none */
+	atomic_t          v110use[ISDN_MAX_CHANNELS];/* Usage-Semaphore for stream */
+	isdn_v110_stream  *v110[ISDN_MAX_CHANNELS];  /* V.110 private data         */
+	struct semaphore  sem;                       /* serialize list access*/
+	isdn_module       *modules;
+} isdn_dev;
+
+extern isdn_dev *dev;
+
+
+/* Utility-Macros */
+#define MIN(a,b) ((a<b)?a:b)
+#define MAX(a,b) ((a>b)?a:b)
+#endif /* __KERNEL__ */
+#endif /* isdn_h */