include/linux/isdn.h

   1 /* $Id: isdn.h,v 1.101 2000/03/20 22:37:47 detabc Exp $
   2  *
   3  * Main header for the Linux ISDN subsystem (linklevel).
   4  *
   5  * Copyright 1994,95,96 by Fritz Elfert (fritz@isdn4linux.de)
   6  * Copyright 1995,96    by Thinking Objects Software GmbH Wuerzburg
   7  * Copyright 1995,96    by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de)
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2, or (at your option)
  12  * any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  *
  23  * $Log: isdn.h,v $
  24  * Revision 1.101  2000/03/20 22:37:47  detabc
  25  * modify abc-extension to work together with the new LL.
  26  * remove abc frame-counter (is obsolete now).
  27  * use the new lp->super_tx_queue for internal queueing (bsd-rawip-compress).
  28  * modify isdn_net_xmit() and isdn_net_write_super().
  29  * -- Kai, please have a look to this two function's. Thank's.
  30  *
  31  * Revision 1.100  2000/03/19 15:27:53  kai
  32  * no known bugs left...
  33  *
  34  * Revision 1.99  2000/03/18 16:20:26  kai
  35  * cosmetics / renaming
  36  *
  37  * Revision 1.98  2000/03/17 18:20:47  kai
  38  * moved to frame_cnt based flow control
  39  * some races still need to be fixed
  40  *
  41  * Revision 1.97  2000/03/17 16:22:55  kai
  42  * we keep track of outstanding packets (given to HL, but not confirmed yet)
  43  * now, but we don't use it for flow control yet.
  44  *
  45  * Revision 1.96  2000/03/17 12:49:42  kai
  46  * calling statcallb with ISDN_STAT_BSENT in hard-IRQ context is now
  47  * officially allowed. writebuf_skb() will never be called in hard-IRQ context
  48  * anymore.
  49  *
  50  * Revision 1.95  2000/03/04 16:20:42  detabc
  51  * copy frames before rewriting frame's saddr
  52  *
  53  * Revision 1.94  2000/02/26 00:29:40  keil
  54  * more softnet changes
  55  *
  56  * Revision 1.93  2000/02/25 11:29:17  paul
  57  * changed chargetime to ulong from int (after about 20 days the "chargetime of
  58  * ipppX is now 1234" message displays a negative number on alpha).
  59  *
  60  * Revision 1.92  2000/02/17 13:15:56  keil
  61  * fix backward compatibility for 2.2
  62  *
  63  * Revision 1.91  2000/02/16 14:56:27  paul
  64  * translated ISDN_MODEM_ANZREG to ISDN_MODEM_NUMREG for english speakers
  65  *
  66  * Revision 1.90  2000/02/06 21:50:00  detabc
  67  * add rewriting of socket's and frame's saddr for udp-ipv4 dynip-connections.
  68  * Include checksum-recompute of ip- and udp-header's.
  69  *
  70  * Revision 1.89  2000/02/05 22:11:33  detabc
  71  * Add rewriting of socket's and frame's saddr adressfield for
  72  * dynip-connections.  Only for tcp/ipv4 and switchable per interface.
  73  * Include checksum-recompute of ip- and tcp-header's.
  74  *
  75  * Revision 1.88  2000/01/20 19:59:43  keil
  76  * Add FAX Class 1 support
  77  *
  78  * Revision 1.87  2000/01/09 20:43:15  detabc
  79  * exand logical bind-group's for both call's (in and out).
  80  * add first part of kernel-config-help for abc-extension.
  81  *
  82  * Revision 1.86  1999/12/05 16:06:09  detabc
  83  * add resethandling for rawip-compression.
  84  * at now all B2-Protocols are usable with rawip-compression
  85  *
  86  * Revision 1.85  1999/11/30 11:29:06  detabc
  87  * add a on the fly frame-counter and limit
  88  *
  89  * Revision 1.84  1999/11/28 14:49:08  detabc
  90  * In case of rawip-compress adjust dev[x]->ibytes/obytes to reflect the
  91  * uncompressed size.
  92  *
  93  * Revision 1.83  1999/11/26 15:54:59  detabc
  94  * added compression (isdn_bsdcompress) for rawip interfaces with x75i B2-protocol.
  95  *
  96  * Revision 1.82  1999/11/20 22:14:14  detabc
  97  * added channel dial-skip in case of external use
  98  * (isdn phone or another isdn device) on the same NTBA.
  99  * usefull with two or more card's connected the different NTBA's.
 100  * global switchable in kernel-config and also per netinterface.
 101  *
 102  * add auto disable of netinterface's in case of:
 103  *      to many connection's in short time.
 104  *      config mistakes (wrong encapsulation, B2-protokoll or so on) on local
 105  *      or remote side.
 106  *      wrong password's or something else to a ISP (syncppp).
 107  *
 108  * possible encapsulations for this future are:
 109  * ISDN_NET_ENCAP_SYNCPPP, ISDN_NET_ENCAP_UIHDLC, ISDN_NET_ENCAP_RAWIP,
 110  * and ISDN_NET_ENCAP_CISCOHDLCK.
 111  *
 112  * Revision 1.81  1999/10/27 21:21:18  detabc
 113  * Added support for building logically-bind-group's per interface.
 114  * usefull for outgoing call's with more then one isdn-card.
 115  *
 116  * Switchable support to dont reset the hangup-timeout for
 117  * receive frames. Most part's of the timru-rules for receiving frames
 118  * are now obsolete. If the input- or forwarding-firewall deny
 119  * the frame, the line will be not hold open.
 120  *
 121  * Revision 1.80  1999/10/26 21:09:29  armin
 122  * New bufferlen for phonenumber only with kernel 2.3.x
 123  *
 124  * Revision 1.79  1999/10/16 17:52:38  keil
 125  * Changing the MSN length need new data versions
 126  *
 127  * Revision 1.78  1999/10/08 18:59:33  armin
 128  * Bugfix of too small MSN buffer and checking phone number
 129  * in isdn_tty_getdial()
 130  *
 131  * Revision 1.77  1999/09/23 22:22:42  detabc
 132  * added tcp-keepalive-detect with local response (ipv4 only)
 133  * added host-only-interface support
 134  * (source ipaddr == interface ipaddr) (ipv4 only)
 135  * ok with kernel 2.3.18 and 2.2.12
 136  *
 137  * Revision 1.76  1999/09/14 10:16:21  keil
 138  * change ABC include
 139  *
 140  * Revision 1.75  1999/09/13 23:25:17  he
 141  * serialized xmitting frames from isdn_ppp and BSENT statcallb
 142  *
 143  * Revision 1.74  1999/09/12 16:19:39  detabc
 144  * added abc features
 145  * low cost routing for net-interfaces (only the HL side).
 146  * need more implementation in the isdnlog-utility
 147  * udp info support (first part).
 148  * different EAZ on outgoing call's.
 149  * more checks on D-Channel callbacks (double use of channels).
 150  * tested and running with kernel 2.3.17
 151  *
 152  * Revision 1.73  1999/09/06 07:29:36  fritz
 153  * Changed my mail-address.
 154  *
 155  * Revision 1.72  1999/09/04 22:20:19  detabc
 156  *
 157  * Revision 1.71  1999/08/23 15:54:22  keil
 158  * more backported changes from kernel 2.3.14
 159  *
 160  * Revision 1.70  1999/07/31 12:59:58  armin
 161  * Added tty fax capabilities.
 162  *
 163  * Revision 1.69  1999/07/13 20:47:53  werner
 164  * added channel bit ISDN_USAGE_DISABLED for limiting b-channel access.
 165  *
 166  * Revision 1.68  1999/07/11 17:07:37  armin
 167  * Added tty modem register S23.
 168  * Added new layer 2 and 3 protocols for Fax and DSP functions.
 169  *
 170  * Revision 1.67  1999/07/07 10:17:24  detabc
 171  * remove unused messages
 172  *
 173  * Revision 1.66  1999/07/01 08:35:37  keil
 174  * compatibility to 2.3
 175  *
 176  * Revision 1.65  1999/06/10 11:51:27  paul
 177  * fixed comment for NET_DV
 178  *
 179  * Revision 1.64  1999/04/18 14:57:14  fritz
 180  * Removed TIMRU stuff
 181  *
 182  * Revision 1.63  1999/04/18 14:07:18  fritz
 183  * Removed TIMRU stuff.
 184  *
 185  * Revision 1.62  1999/04/12 13:16:54  fritz
 186  * Changes from 2.0 tree.
 187  *
 188  * Revision 1.61  1999/03/02 11:43:21  armin
 189  * Added variable to store connect-message of Modem.
 190  * Added Timer-define for RegS7 (Wait for Carrier).
 191  *
 192  * Revision 1.60  1998/10/25 14:50:29  fritz
 193  * Backported from MIPS (Cobalt).
 194  *
 195  * Revision 1.59  1998/10/23 10:18:55  paul
 196  * Implementation of "dialmode" (successor of "status")
 197  * You also need current isdnctrl for this!
 198  *
 199  * Revision 1.58  1998/10/23 10:10:06  fritz
 200  * Test-Checkin
 201  *
 202  * Revision 1.57  1998/08/31 21:10:01  he
 203  * new ioctl IIOCNETGPN for /dev/isdninfo (get network interface'
 204  *     peer phone number)
 205  *
 206  * Revision 1.56  1998/07/26 18:46:52  armin
 207  * Added silence detection in voice receive mode.
 208  *
 209  * Revision 1.55  1998/06/26 15:13:17  fritz
 210  * Added handling of STAT_ICALL with incomplete CPN.
 211  * Added AT&L for ttyI emulator.
 212  * Added more locking stuff in tty_write.
 213  *
 214  * Revision 1.54  1998/06/18 23:32:01  fritz
 215  * Replaced cli()/restore_flags() in isdn_tty_write() by locking.
 216  * Removed direct-senddown feature in isdn_tty_write because it will
 217  * never succeed with locking and is useless anyway.
 218  *
 219  * Revision 1.53  1998/06/17 19:51:51  he
 220  * merged with 2.1.10[34] (cosmetics and udelay() -> mdelay())
 221  * brute force fix to avoid Ugh's in isdn_tty_write()
 222  * cleaned up some dead code
 223  *
 224  * Revision 1.46  1998/04/14 16:28:59  he
 225  * Fixed user space access with interrupts off and remaining
 226  * copy_{to,from}_user() -> -EFAULT return codes
 227  *
 228  * Revision 1.45  1998/03/24 16:33:12  hipp
 229  * More CCP changes. BSD compression now "works" on a local loopback link.
 230  * Moved some isdn_ppp stuff from isdn.h to isdn_ppp.h
 231  *
 232  * Revision 1.44  1998/03/22 18:50:56  hipp
 233  * Added BSD Compression for syncPPP .. UNTESTED at the moment
 234  *
 235  * Revision 1.43  1998/03/09 17:46:44  he
 236  * merged in 2.1.89 changes
 237  *
 238  *
 239  * Revision 1.40  1998/03/08 01:08:29  fritz
 240  * Increased NET_DV because of TIMRU
 241  *
 242  * Revision 1.39  1998/03/07 22:42:49  fritz
 243  * Starting generic module support (Nothing usable yet).
 244  *
 245  * Revision 1.38  1998/03/07 18:21:29  cal
 246  * Dynamic Timeout-Rule-Handling vs. 971110 included
 247  *
 248  * Revision 1.37  1998/02/22 19:45:24  fritz
 249  * Some changes regarding V.110
 250  *
 251  * Revision 1.36  1998/02/20 17:35:55  fritz
 252  * Added V.110 stuff.
 253  *
 254  * Revision 1.35  1998/01/31 22:14:14  keil
 255  * changes for 2.1.82
 256  *
 257  * Revision 1.34  1997/10/09 21:28:11  fritz
 258  * New HL<->LL interface:
 259  *   New BSENT callback with nr. of bytes included.
 260  *   Sending without ACK.
 261  *   New L1 error status (not yet in use).
 262  *   Cleaned up obsolete structures.
 263  * Implemented Cisco-SLARP.
 264  * Changed local net-interface data to be dynamically allocated.
 265  * Removed old 2.0 compatibility stuff.
 266  *
 267  * Revision 1.33  1997/08/21 14:44:22  fritz
 268  * Moved triggercps to end of struct for backwards-compatibility.
 269  *
 270  * Revision 1.32  1997/08/21 09:49:46  fritz
 271  * Increased NET_DV
 272  *
 273  * Revision 1.31  1997/06/22 11:57:07  fritz
 274  * Added ability to adjust slave triggerlevel.
 275  *
 276  * Revision 1.30  1997/06/17 13:07:23  hipp
 277  * compression changes , MP changes
 278  *
 279  * Revision 1.29  1997/05/27 15:18:02  fritz
 280  * Added changes for recent 2.1.x kernels:
 281  *   changed return type of isdn_close
 282  *   queue_task_* -> queue_task
 283  *   clear/set_bit -> test_and_... where apropriate.
 284  *   changed type of hard_header_cache parameter.
 285  *
 286  * Revision 1.28  1997/03/07 01:33:01  fritz
 287  * Added proper ifdef's for CONFIG_ISDN_AUDIO
 288  *
 289  * Revision 1.27  1997/03/05 21:11:49  fritz
 290  * Minor fixes.
 291  *
 292  * Revision 1.26  1997/02/28 02:37:53  fritz
 293  * Added some comments.
 294  *
 295  * Revision 1.25  1997/02/23 16:54:23  hipp
 296  * some initial changes for future PPP compresion
 297  *
 298  * Revision 1.24  1997/02/18 09:42:45  fritz
 299  * Bugfix: Increased ISDN_MODEM_ANZREG.
 300  * Increased TTY_DV.
 301  *
 302  * Revision 1.23  1997/02/10 22:07:13  fritz
 303  * Added 2 modem registers for numbering plan and screening info.
 304  *
 305  * Revision 1.22  1997/02/03 23:42:08  fritz
 306  * Added ISDN_TIMER_RINGING
 307  * Misc. changes for Kernel 2.1.X compatibility
 308  *
 309  * Revision 1.21  1997/01/17 01:19:10  fritz
 310  * Applied chargeint patch.
 311  *
 312  * Revision 1.20  1997/01/17 00:41:19  fritz
 313  * Increased TTY_DV.
 314  *
 315  * Revision 1.19  1997/01/14 01:41:07  fritz
 316  * Added ATI2 related variables.
 317  * Added variables for audio support in skbuffs.
 318  *
 319  * Revision 1.18  1996/11/06 17:37:50  keil
 320  * more changes for 2.1.X
 321  *
 322  * Revision 1.17  1996/09/07 12:53:57  hipp
 323  * moved a few isdn_ppp.c specific defines to drives/isdn/isdn_ppp.h
 324  *
 325  * Revision 1.16  1996/08/12 16:20:56  hipp
 326  * renamed ppp_minor to ppp_slot
 327  *
 328  * Revision 1.15  1996/06/15 14:56:57  fritz
 329  * Added version signatures for data structures used
 330  * by userlevel programs.
 331  *
 332  * Revision 1.14  1996/06/06 21:24:23  fritz
 333  * Started adding support for suspend/resume.
 334  *
 335  * Revision 1.13  1996/06/05 02:18:20  fritz
 336  * Added DTMF decoding stuff.
 337  *
 338  * Revision 1.12  1996/06/03 19:55:08  fritz
 339  * Fixed typos.
 340  *
 341  * Revision 1.11  1996/05/31 01:37:47  fritz
 342  * Minor changes, due to changes in isdn_tty.c
 343  *
 344  * Revision 1.10  1996/05/18 01:37:18  fritz
 345  * Added spelling corrections and some minor changes
 346  * to stay in sync with kernel.
 347  *
 348  * Revision 1.9  1996/05/17 03:58:20  fritz
 349  * Added flags for DLE handling.
 350  *
 351  * Revision 1.8  1996/05/11 21:49:55  fritz
 352  * Removed queue management variables.
 353  * Changed queue management to use sk_buffs.
 354  *
 355  * Revision 1.7  1996/05/07 09:10:06  fritz
 356  * Reorganized tty-related structs.
 357  *
 358  * Revision 1.6  1996/05/06 11:38:27  hipp
 359  * minor change in ippp struct
 360  *
 361  * Revision 1.5  1996/04/30 11:03:16  fritz
 362  * Added Michael's ippp-bind patch.
 363  *
 364  * Revision 1.4  1996/04/29 23:00:02  fritz
 365  * Added variables for voice-support.
 366  *
 367  * Revision 1.3  1996/04/20 16:54:58  fritz
 368  * Increased maximum number of channels.
 369  * Added some flags for isdn_net to handle callback more reliable.
 370  * Fixed delay-definitions to be more accurate.
 371  * Misc. typos
 372  *
 373  * Revision 1.2  1996/02/11 02:10:02  fritz
 374  * Changed IOCTL-names
 375  * Added rx_netdev, st_netdev, first_skb, org_hcb, and org_hcu to
 376  * Netdevice-local struct.
 377  *
 378  * Revision 1.1  1996/01/10 20:55:07  fritz
 379  * Initial revision
 380  *
 381  */
 382
 383 #ifndef isdn_h
 384 #define isdn_h
 385
 386 #include <linux/config.h>
 387 #include <linux/ioctl.h>
 388
 389 #define ISDN_TTY_MAJOR    43
 390 #define ISDN_TTYAUX_MAJOR 44
 391 #define ISDN_MAJOR        45
 392
 393 /* The minor-devicenumbers for Channel 0 and 1 are used as arguments for
 394  * physical Channel-Mapping, so they MUST NOT be changed without changing
 395  * the correspondent code in isdn.c
 396  */
 397
 398 #ifdef CONFIG_COBALT_MICRO_SERVER
 399 /* Save memory */
 400 #define ISDN_MAX_DRIVERS    2
 401 #define ISDN_MAX_CHANNELS   8
 402 #else
 403 #define ISDN_MAX_DRIVERS    32
 404 #define ISDN_MAX_CHANNELS   64
 405 #endif
 406 #define ISDN_MINOR_B        0
 407 #define ISDN_MINOR_BMAX     (ISDN_MAX_CHANNELS-1)
 408 #define ISDN_MINOR_CTRL     64
 409 #define ISDN_MINOR_CTRLMAX  (64 + (ISDN_MAX_CHANNELS-1))
 410 #define ISDN_MINOR_PPP      128
 411 #define ISDN_MINOR_PPPMAX   (128 + (ISDN_MAX_CHANNELS-1))
 412 #define ISDN_MINOR_STATUS   255
 413
 414 #undef CONFIG_ISDN_WITH_ABC_CALLB
 415 #undef CONFIG_ISDN_WITH_ABC_UDP_CHECK
 416 #undef CONFIG_ISDN_WITH_ABC_UDP_CHECK_HANGUP
 417 #undef CONFIG_ISDN_WITH_ABC_UDP_CHECK_DIAL
 418 #undef CONFIG_ISDN_WITH_ABC_OUTGOING_EAZ
 419 #undef CONFIG_ISDN_WITH_ABC_LCR_SUPPORT
 420 #undef CONFIG_ISDN_WITH_ABC_IPV4_TCP_KEEPALIVE
 421 #undef CONFIG_ISDN_WITH_ABC_IPV4_DYNADDR
 422 #undef CONFIG_ISDN_WITH_ABC_RCV_NO_HUPTIMER
 423 #undef CONFIG_ISDN_WITH_ABC_ICALL_BIND
 424 #undef CONFIG_ISDN_WITH_ABC_CH_EXTINUSE
 425 #undef CONFIG_ISDN_WITH_ABC_CONN_ERROR
 426 #undef CONFIG_ISDN_WITH_ABC_RAWIPCOMPRESS
 427 #undef CONFIG_ISDN_WITH_ABC_IPV4_RW_SOCKADDR
 428 #undef CONFIG_ISDN_WITH_ABC_IPV4_RWUDP_SOCKADDR
 429
 430
 431 /* New ioctl-codes */
 432 #define IIOCNETAIF  _IO('I',1)
 433 #define IIOCNETDIF  _IO('I',2)
 434 #define IIOCNETSCF  _IO('I',3)
 435 #define IIOCNETGCF  _IO('I',4)
 436 #define IIOCNETANM  _IO('I',5)
 437 #define IIOCNETDNM  _IO('I',6)
 438 #define IIOCNETGNM  _IO('I',7)
 439 #define IIOCGETSET  _IO('I',8) /* no longer supported */
 440 #define IIOCSETSET  _IO('I',9) /* no longer supported */
 441 #define IIOCSETVER  _IO('I',10)
 442 #define IIOCNETHUP  _IO('I',11)
 443 #define IIOCSETGST  _IO('I',12)
 444 #define IIOCSETBRJ  _IO('I',13)
 445 #define IIOCSIGPRF  _IO('I',14)
 446 #define IIOCGETPRF  _IO('I',15)
 447 #define IIOCSETPRF  _IO('I',16)
 448 #define IIOCGETMAP  _IO('I',17)
 449 #define IIOCSETMAP  _IO('I',18)
 450 #define IIOCNETASL  _IO('I',19)
 451 #define IIOCNETDIL  _IO('I',20)
 452 #define IIOCGETCPS  _IO('I',21)
 453 #define IIOCGETDVR  _IO('I',22)
 454 #define IIOCNETLCR  _IO('I',23) /* dwabc ioctl for LCR from isdnlog */
 455 #define IIOCNETDWRSET  _IO('I',24) /* dwabc ioctl to reset abc-values to default on a net-interface */
 456
 457 #define IIOCNETALN  _IO('I',32)
 458 #define IIOCNETDLN  _IO('I',33)
 459
 460 #define IIOCNETGPN  _IO('I',34)
 461
 462 #define IIOCDBGVAR  _IO('I',127)
 463
 464 #define IIOCDRVCTL  _IO('I',128)
 465
 466 /* Packet encapsulations for net-interfaces */
 467 #define ISDN_NET_ENCAP_ETHER      0
 468 #define ISDN_NET_ENCAP_RAWIP      1
 469 #define ISDN_NET_ENCAP_IPTYP      2
 470 #define ISDN_NET_ENCAP_CISCOHDLC  3 /* Without SLARP and keepalive */
 471 #define ISDN_NET_ENCAP_SYNCPPP    4
 472 #define ISDN_NET_ENCAP_UIHDLC     5
 473 #define ISDN_NET_ENCAP_CISCOHDLCK 6 /* With SLARP and keepalive    */
 474 #define ISDN_NET_ENCAP_X25IFACE   7 /* Documentation/networking/x25-iface.txt*/
 475 #define ISDN_NET_ENCAP_MAX_ENCAP  ISDN_NET_ENCAP_X25IFACE
 476 /* Facility which currently uses an ISDN-channel */
 477 #define ISDN_USAGE_NONE       0
 478 #define ISDN_USAGE_RAW        1
 479 #define ISDN_USAGE_MODEM      2
 480 #define ISDN_USAGE_NET        3
 481 #define ISDN_USAGE_VOICE      4
 482 #define ISDN_USAGE_FAX        5
 483 #define ISDN_USAGE_MASK       7 /* Mask to get plain usage */
 484 #define ISDN_USAGE_DISABLED  32 /* This bit is set, if channel is disabled */
 485 #define ISDN_USAGE_EXCLUSIVE 64 /* This bit is set, if channel is exclusive */
 486 #define ISDN_USAGE_OUTGOING 128 /* This bit is set, if channel is outgoing  */
 487
 488 #define ISDN_MODEM_NUMREG    24        /* Number of Modem-Registers        */
 489 #define ISDN_LMSNLEN         255 /* Length of tty's Listen-MSN string */
 490 #define ISDN_CMSGLEN         50  /* Length of CONNECT-Message to add for Modem */
 491
 492 #define ISDN_MSNLEN          32
 493 #define NET_DV 0x06  /* Data version for isdn_net_ioctl_cfg   */
 494 #define TTY_DV 0x06  /* Data version for iprofd etc.          */
 495
 496 #define INF_DV 0x01  /* Data version for /dev/isdninfo        */
 497
 498 typedef struct {
 499   char drvid[25];
 500   unsigned long arg;
 501 } isdn_ioctl_struct;
 502
 503 typedef struct {
 504   unsigned long isdndev;
 505   unsigned long atmodem[ISDN_MAX_CHANNELS];
 506   unsigned long info[ISDN_MAX_CHANNELS];
 507 } debugvar_addr;
 508
 509 typedef struct {
 510   char name[10];
 511   char phone[ISDN_MSNLEN];
 512   int  outgoing;
 513 } isdn_net_ioctl_phone;
 514
 515 typedef struct {
 516   char name[10];     /* Name of interface                     */
 517   char master[10];   /* Name of Master for Bundling           */
 518   char slave[10];    /* Name of Slave for Bundling            */
 519   char eaz[256];     /* EAZ/MSN                               */
 520   char drvid[25];    /* DriverId for Bindings                 */
 521   int  onhtime;      /* Hangup-Timeout                        */
 522   int  charge;       /* Charge-Units                          */
 523   int  l2_proto;     /* Layer-2 protocol                      */
 524   int  l3_proto;     /* Layer-3 protocol                      */
 525   int  p_encap;      /* Encapsulation                         */
 526   int  exclusive;    /* Channel, if bound exclusive           */
 527   int  dialmax;      /* Dial Retry-Counter                    */
 528   int  slavedelay;   /* Delay until slave starts up           */
 529   int  cbdelay;      /* Delay before Callback                 */
 530   int  chargehup;    /* Flag: Charge-Hangup                   */
 531   int  ihup;         /* Flag: Hangup-Timeout on incoming line */
 532   int  secure;       /* Flag: Secure                          */
 533   int  callback;     /* Flag: Callback                        */
 534   int  cbhup;        /* Flag: Reject Call before Callback     */
 535   int  pppbind;      /* ippp device for bindings              */
 536   int  chargeint;    /* Use fixed charge interval length      */
 537   int  triggercps;   /* BogoCPS needed for triggering slave   */
 538   int  dialtimeout;  /* Dial-Timeout                          */
 539   int  dialwait;     /* Time to wait after failed dial        */
 540   int  dialmode;     /* Flag: off / on / auto                 */
 541 } isdn_net_ioctl_cfg;
 542
 543 #define ISDN_NET_DIALMODE_MASK 0xC0  /* bits for status                   */
 544 #define  ISDN_NET_DM_OFF        0x00    /* this interface is stopped      */
 545 #define  ISDN_NET_DM_MANUAL     0x40    /* this interface is on (manual)  */
 546 #define  ISDN_NET_DM_AUTO       0x80    /* this interface is autodial     */
 547 #define ISDN_NET_DIALMODE(x) ((&(x))->flags & ISDN_NET_DIALMODE_MASK)
 548
 549 #ifdef __KERNEL__
 550
 551 #include <linux/errno.h>
 552 #include <linux/fs.h>
 553 #include <linux/major.h>
 554 #include <asm/segment.h>
 555 #include <asm/io.h>
 556 #include <linux/kernel.h>
 557 #include <linux/signal.h>
 558 #include <linux/malloc.h>
 559 #include <linux/timer.h>
 560 #include <linux/wait.h>
 561 #include <linux/tty.h>
 562 #include <linux/tty_flip.h>
 563 #include <linux/serial_reg.h>
 564 #include <linux/fcntl.h>
 565 #include <linux/types.h>
 566 #include <linux/interrupt.h>
 567 #include <linux/ip.h>
 568 #include <linux/in.h>
 569 #include <linux/netdevice.h>
 570 #include <linux/etherdevice.h>
 571 #include <linux/skbuff.h>
 572 #include <linux/tcp.h>
 573
 574 #ifdef CONFIG_ISDN_PPP
 575
 576 #ifdef CONFIG_ISDN_PPP_VJ
 577 #  include <net/slhc_vj.h>
 578 #endif
 579
 580 #include <linux/ppp_defs.h>
 581 #include <linux/if_ppp.h>
 582 #include <linux/if_pppvar.h>
 583
 584 #include <linux/isdn_ppp.h>
 585 #endif
 586
 587 #ifdef CONFIG_ISDN_X25
 588 #  include <linux/concap.h>
 589 #endif
 590
 591 #ifdef CONFIG_DEVFS_FS
 592 #  include <linux/devfs_fs_kernel.h>
 593 #endif
 594
 595 #include <linux/isdnif.h>
 596
 597 #define ISDN_DRVIOCTL_MASK       0x7f  /* Mask for Device-ioctl */
 598
 599 /* Until now unused */
 600 #define ISDN_SERVICE_VOICE 1
 601 #define ISDN_SERVICE_AB    1<<1
 602 #define ISDN_SERVICE_X21   1<<2
 603 #define ISDN_SERVICE_G4    1<<3
 604 #define ISDN_SERVICE_BTX   1<<4
 605 #define ISDN_SERVICE_DFUE  1<<5
 606 #define ISDN_SERVICE_X25   1<<6
 607 #define ISDN_SERVICE_TTX   1<<7
 608 #define ISDN_SERVICE_MIXED 1<<8
 609 #define ISDN_SERVICE_FW    1<<9
 610 #define ISDN_SERVICE_GTEL  1<<10
 611 #define ISDN_SERVICE_BTXN  1<<11
 612 #define ISDN_SERVICE_BTEL  1<<12
 613
 614 /* Macros checking plain usage */
 615 #define USG_NONE(x)         ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NONE)
 616 #define USG_RAW(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_RAW)
 617 #define USG_MODEM(x)        ((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM)
 618 #define USG_VOICE(x)        ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)
 619 #define USG_NET(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NET)
 620 #define USG_FAX(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_FAX)
 621 #define USG_OUTGOING(x)     ((x & ISDN_USAGE_OUTGOING)==ISDN_USAGE_OUTGOING)
 622 #define USG_MODEMORVOICE(x) (((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM) || \
 623                              ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)     )
 624
 625 /* Timer-delays and scheduling-flags */
 626 #define ISDN_TIMER_RES         3                         /* Main Timer-Resolution   */
 627 #define ISDN_TIMER_02SEC       (HZ/(ISDN_TIMER_RES+1)/5) /* Slow-Timer1 .2 sec      */
 628 #define ISDN_TIMER_1SEC        (HZ/(ISDN_TIMER_RES+1))   /* Slow-Timer2 1 sec       */
 629 #define ISDN_TIMER_RINGING     5 /* tty RINGs = ISDN_TIMER_1SEC * this factor       */
 630 #define ISDN_TIMER_KEEPINT    10 /* Cisco-Keepalive = ISDN_TIMER_1SEC * this factor */
 631 #define ISDN_TIMER_MODEMREAD   1
 632 #define ISDN_TIMER_MODEMPLUS   2
 633 #define ISDN_TIMER_MODEMRING   4
 634 #define ISDN_TIMER_MODEMXMIT   8
 635 #define ISDN_TIMER_NETDIAL    16
 636 #define ISDN_TIMER_NETHANGUP  32
 637 #define ISDN_TIMER_IPPP       64
 638 #define ISDN_TIMER_KEEPALIVE 128 /* Cisco-Keepalive */
 639 #define ISDN_TIMER_CARRIER   256 /* Wait for Carrier */
 640 #define ISDN_TIMER_FAST      (ISDN_TIMER_MODEMREAD | ISDN_TIMER_MODEMPLUS | \
 641                               ISDN_TIMER_MODEMXMIT)
 642 #define ISDN_TIMER_SLOW      (ISDN_TIMER_MODEMRING | ISDN_TIMER_NETHANGUP | \
 643                               ISDN_TIMER_NETDIAL | ISDN_TIMER_KEEPALIVE | \
 644                               ISDN_TIMER_CARRIER)
 645
 646 /* Timeout-Values for isdn_net_dial() */
 647 #define ISDN_TIMER_DTIMEOUT10 (10*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
 648 #define ISDN_TIMER_DTIMEOUT15 (15*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
 649 #define ISDN_TIMER_DTIMEOUT60 (60*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
 650
 651 /* GLOBAL_FLAGS */
 652 #define ISDN_GLOBAL_STOPPED 1
 653
 654 /*=================== Start of ip-over-ISDN stuff =========================*/
 655
 656 /* Feature- and status-flags for a net-interface */
 657 #define ISDN_NET_CONNECTED  0x01       /* Bound to ISDN-Channel             */
 658 #define ISDN_NET_SECURE     0x02       /* Accept calls from phonelist only  */
 659 #define ISDN_NET_CALLBACK   0x04       /* activate callback                 */
 660 #define ISDN_NET_CBHUP      0x08       /* hangup before callback            */
 661 #define ISDN_NET_CBOUT      0x10       /* remote machine does callback      */
 662
 663 #define ISDN_NET_MAGIC      0x49344C02 /* for paranoia-checking             */
 664
 665 /* Phone-list-element */
 666 typedef struct {
 667   void *next;
 668   char num[ISDN_MSNLEN];
 669 } isdn_net_phone;
 670
 671 /*
 672    Principles when extending structures for generic encapsulation protocol
 673    ("concap") support:
 674    - Stuff which is hardware specific (here i4l-specific) goes in
 675      the netdev -> local structure (here: isdn_net_local)
 676    - Stuff which is encapsulation protocol specific goes in the structure
 677      which holds the linux device structure (here: isdn_net_device)
 678 */
 679
 680 /* Local interface-data */
 681 typedef struct isdn_net_local_s {
 682   ulong                  magic;
 683   char                   name[10];     /* Name of device                   */
 684   struct enet_statistics stats;        /* Ethernet Statistics              */
 685   int                    isdn_device;  /* Index to isdn-device             */
 686   int                    isdn_channel; /* Index to isdn-channel            */
 687   int                    ppp_slot;     /* PPPD device slot number          */
 688   int                    pre_device;   /* Preselected isdn-device          */
 689   int                    pre_channel;  /* Preselected isdn-channel         */
 690   int                    exclusive;    /* If non-zero idx to reserved chan.*/
 691   int                    flags;        /* Connection-flags                 */
 692   int                    dialretry;    /* Counter for Dialout-retries      */
 693   int                    dialmax;      /* Max. Number of Dial-retries      */
 694   int                    cbdelay;      /* Delay before Callback starts     */
 695   int                    dtimer;       /* Timeout-counter for dialing      */
 696   char                   msn[ISDN_MSNLEN]; /* MSNs/EAZs for this interface */
 697   u_char                 cbhup;        /* Flag: Reject Call before Callback*/
 698   u_char                 dialstate;    /* State for dialing                */
 699   u_char                 p_encap;      /* Packet encapsulation             */
 700                                        /*   0 = Ethernet over ISDN         */
 701                                        /*   1 = RAW-IP                     */
 702                                        /*   2 = IP with type field         */
 703   u_char                 l2_proto;     /* Layer-2-protocol                 */
 704                                        /* See ISDN_PROTO_L2..-constants in */
 705                                        /* isdnif.h                         */
 706                                        /*   0 = X75/LAPB with I-Frames     */
 707                                        /*   1 = X75/LAPB with UI-Frames    */
 708                                        /*   2 = X75/LAPB with BUI-Frames   */
 709                                        /*   3 = HDLC                       */
 710   u_char                 l3_proto;     /* Layer-3-protocol                 */
 711                                        /* See ISDN_PROTO_L3..-constants in */
 712                                        /* isdnif.h                         */
 713                                        /*   0 = Transparent                */
 714   int                    huptimer;     /* Timeout-counter for auto-hangup  */
 715   int                    charge;       /* Counter for charging units       */
 716   ulong                  chargetime;   /* Timer for Charging info          */
 717   int                    hupflags;     /* Flags for charge-unit-hangup:    */
 718                                        /* bit0: chargeint is invalid       */
 719                                        /* bit1: Getting charge-interval    */
 720                                        /* bit2: Do charge-unit-hangup      */
 721                                        /* bit3: Do hangup even on incoming */
 722   int                    outgoing;     /* Flag: outgoing call              */
 723   int                    onhtime;      /* Time to keep link up             */
 724   int                    chargeint;    /* Interval between charge-infos    */
 725   int                    onum;         /* Flag: at least 1 outgoing number */
 726   int                    cps;          /* current speed of this interface  */
 727   int                    transcount;   /* byte-counter for cps-calculation */
 728   int                    sqfull;       /* Flag: netdev-queue overloaded    */
 729   ulong                  sqfull_stamp; /* Start-Time of overload           */
 730   ulong                  slavedelay;   /* Dynamic bundling delaytime       */
 731   int                    triggercps;   /* BogoCPS needed for trigger slave */
 732   isdn_net_phone         *phone[2];    /* List of remote-phonenumbers      */
 733                                        /* phone[0] = Incoming Numbers      */
 734                                        /* phone[1] = Outgoing Numbers      */
 735   isdn_net_phone         *dial;        /* Pointer to dialed number         */
 736   struct net_device      *master;      /* Ptr to Master device for slaves  */
 737   struct net_device      *slave;       /* Ptr to Slave device for masters  */
 738   struct isdn_net_local_s *next;       /* Ptr to next link in bundle       */
 739   struct isdn_net_local_s *last;       /* Ptr to last link in bundle       */
 740   struct isdn_net_dev_s  *netdev;      /* Ptr to netdev                    */
 741   struct sk_buff_head    super_tx_queue; /* List of supervisory frames to  */
 742                                        /* be transmitted asap              */
 743   atomic_t frame_cnt;                  /* number of frames currently       */
 744                                        /* queued in HL driver              */
 745                                        /* Ptr to orig. hard_header_cache   */
 746   spinlock_t             xmit_lock;    /* used to protect the xmit path of */
 747                                        /* a particular channel (including  */
 748                                        /* the frame_cnt                    */
 749
 750   int                    (*org_hhc)(
 751                                     struct neighbour *neigh,
 752                                     struct hh_cache *hh);
 753                                        /* Ptr to orig. header_cache_update */
 754   void                   (*org_hcu)(struct hh_cache *,
 755                                     struct net_device *,
 756                                     unsigned char *);
 757   int  pppbind;                        /* ippp device for bindings         */
 758   int                                   dialtimeout;    /* How long shall we try on dialing? (jiffies) */
 759   int                                   dialwait;               /* How long shall we wait after failed attempt? (jiffies) */
 760   ulong                                 dialstarted;    /* jiffies of first dialing-attempt */
 761   ulong                                 dialwait_timer; /* jiffies of earliest next dialing-attempt */
 762   int                                   huptimeout;             /* How long will the connection be up? (seconds) */
 763 #ifdef CONFIG_ISDN_X25
 764   struct concap_device_ops *dops;      /* callbacks used by encapsulator   */
 765 #endif
 766   int  cisco_loop;                     /* Loop counter for Cisco-SLARP     */
 767   ulong cisco_myseq;                   /* Local keepalive seq. for Cisco   */
 768   ulong cisco_yourseq;                 /* Remote keepalive seq. for Cisco  */
 769   struct tq_struct tqueue;
 770 } isdn_net_local;
 771
 772 /* the interface itself */
 773 typedef struct isdn_net_dev_s {
 774   isdn_net_local *local;
 775   isdn_net_local *queue;               /* circular list of all bundled
 776                                           channels, which are currently
 777                                           online                           */
 778   spinlock_t queue_lock;               /* lock to protect queue            */
 779   void *next;                          /* Pointer to next isdn-interface   */
 780   struct net_device dev;               /* interface to upper levels        */
 781 #ifdef CONFIG_ISDN_PPP
 782   struct mpqueue *mp_last;
 783   struct ippp_bundle ib;
 784 #endif
 785 #ifdef CONFIG_ISDN_X25
 786   struct concap_proto  *cprot; /* connection oriented encapsulation protocol */
 787 #endif
 788
 789 } isdn_net_dev;
 790
 791 /*===================== End of ip-over-ISDN stuff ===========================*/
 792
 793 /*======================= Start of ISDN-tty stuff ===========================*/
 794
 795 #define ISDN_ASYNC_MAGIC          0x49344C01 /* for paranoia-checking        */
 796 #define ISDN_ASYNC_INITIALIZED    0x80000000 /* port was initialized         */
 797 #define ISDN_ASYNC_CALLOUT_ACTIVE 0x40000000 /* Call out device active       */
 798 #define ISDN_ASYNC_NORMAL_ACTIVE  0x20000000 /* Normal device active         */
 799 #define ISDN_ASYNC_CLOSING        0x08000000 /* Serial port is closing       */
 800 #define ISDN_ASYNC_CTS_FLOW       0x04000000 /* Do CTS flow control          */
 801 #define ISDN_ASYNC_CHECK_CD       0x02000000 /* i.e., CLOCAL                 */
 802 #define ISDN_ASYNC_HUP_NOTIFY         0x0001 /* Notify tty on hangups/closes */
 803 #define ISDN_ASYNC_SESSION_LOCKOUT    0x0100 /* Lock cua opens on session    */
 804 #define ISDN_ASYNC_PGRP_LOCKOUT       0x0200 /* Lock cua opens on pgrp       */
 805 #define ISDN_ASYNC_CALLOUT_NOHUP      0x0400 /* No hangup for cui            */
 806 #define ISDN_ASYNC_SPLIT_TERMIOS      0x0008 /* Sep. termios for dialin/out  */
 807 #define ISDN_SERIAL_XMIT_SIZE           1024 /* Default bufsize for write    */
 808 #define ISDN_SERIAL_XMIT_MAX            4000 /* Maximum bufsize for write    */
 809 #define ISDN_SERIAL_TYPE_NORMAL            1
 810 #define ISDN_SERIAL_TYPE_CALLOUT           2
 811
 812 #ifdef CONFIG_ISDN_AUDIO
 813 /* For using sk_buffs with audio we need some private variables
 814  * within each sk_buff. For this purpose, we declare a struct here,
 815  * and put it always at skb->head. A few macros help accessing the
 816  * variables. Of course, we need to check skb_headroom prior to
 817  * any access.
 818  */
 819 typedef struct isdn_audio_skb {
 820   unsigned short dle_count;
 821   unsigned char  lock;
 822 } isdn_audio_skb;
 823
 824 #define ISDN_AUDIO_SKB_DLECOUNT(skb) (((isdn_audio_skb*)skb->head)->dle_count)
 825 #define ISDN_AUDIO_SKB_LOCK(skb) (((isdn_audio_skb*)skb->head)->lock)
 826 #endif
 827
 828 /* Private data of AT-command-interpreter */
 829 typedef struct atemu {
 830         u_char       profile[ISDN_MODEM_NUMREG]; /* Modem-Regs. Profile 0              */
 831         u_char       mdmreg[ISDN_MODEM_NUMREG];  /* Modem-Registers                    */
 832         char         pmsn[ISDN_MSNLEN];          /* EAZ/MSNs Profile 0                 */
 833         char         msn[ISDN_MSNLEN];           /* EAZ/MSN                            */
 834         char         plmsn[ISDN_LMSNLEN];        /* Listening MSNs Profile 0           */
 835         char         lmsn[ISDN_LMSNLEN];         /* Listening MSNs                     */
 836         char         cpn[ISDN_MSNLEN];           /* CalledPartyNumber on incoming call */
 837         char         connmsg[ISDN_CMSGLEN];      /* CONNECT-Msg from HL-Driver         */
 838 #ifdef CONFIG_ISDN_AUDIO
 839         u_char       vpar[10];                   /* Voice-parameters                   */
 840         int          lastDLE;                    /* Flag for voice-coding: DLE seen    */
 841 #endif
 842         int          mdmcmdl;                    /* Length of Modem-Commandbuffer      */
 843         int          pluscount;                  /* Counter for +++ sequence           */
 844         int          lastplus;                   /* Timestamp of last +                */
 845         int          carrierwait;                /* Seconds of carrier waiting         */
 846         char         mdmcmd[255];                /* Modem-Commandbuffer                */
 847         unsigned int charge;                     /* Charge units of current connection */
 848 } atemu;
 849
 850 /* Private data (similar to async_struct in <linux/serial.h>) */
 851 typedef struct modem_info {
 852   int                   magic;
 853   int                   flags;           /* defined in tty.h               */
 854   int                   x_char;          /* xon/xoff character             */
 855   int                   mcr;             /* Modem control register         */
 856   int                   msr;             /* Modem status register          */
 857   int                   lsr;             /* Line status register           */
 858   int                   line;
 859   int                   count;           /* # of fd on device              */
 860   int                   blocked_open;    /* # of blocked opens             */
 861   long                  session;         /* Session of opening process     */
 862   long                  pgrp;            /* pgrp of opening process        */
 863   int                   online;          /* 1 = B-Channel is up, drop data */
 864                                          /* 2 = B-Channel is up, deliver d.*/
 865   int                   dialing;         /* Dial in progress or ATA        */
 866   int                   rcvsched;        /* Receive needs schedule         */
 867   int                   isdn_driver;     /* Index to isdn-driver           */
 868   int                   isdn_channel;    /* Index to isdn-channel          */
 869   int                   drv_index;       /* Index to dev->usage            */
 870   int                   ncarrier;        /* Flag: schedule NO CARRIER      */
 871   unsigned char         last_cause[8];   /* Last cause message             */
 872   unsigned char         last_num[ISDN_MSNLEN];
 873                                          /* Last phone-number              */
 874   unsigned char         last_l2;         /* Last layer-2 protocol          */
 875   unsigned char         last_si;         /* Last service                   */
 876   unsigned char         last_lhup;       /* Last hangup local?             */
 877   unsigned char         last_dir;        /* Last direction (in or out)     */
 878   struct timer_list     nc_timer;        /* Timer for delayed NO CARRIER   */
 879   int                   send_outstanding;/* # of outstanding send-requests */
 880   int                   xmit_size;       /* max. # of chars in xmit_buf    */
 881   int                   xmit_count;      /* # of chars in xmit_buf         */
 882   unsigned char         *xmit_buf;       /* transmit buffer                */
 883   struct sk_buff_head   xmit_queue;      /* transmit queue                 */
 884   atomic_t              xmit_lock;       /* Semaphore for isdn_tty_write   */
 885 #ifdef CONFIG_ISDN_AUDIO
 886   int                   vonline;         /* Voice-channel status           */
 887                                          /* Bit 0 = recording              */
 888                                          /* Bit 1 = playback               */
 889                                          /* Bit 2 = playback, DLE-ETX seen */
 890   struct sk_buff_head   dtmf_queue;      /* queue for dtmf results         */
 891   void                  *adpcms;         /* state for adpcm decompression  */
 892   void                  *adpcmr;         /* state for adpcm compression    */
 893   void                  *dtmf_state;     /* state for dtmf decoder         */
 894   void                  *silence_state;  /* state for silence detection    */
 895 #endif
 896 #ifdef CONFIG_ISDN_TTY_FAX
 897   struct T30_s          *fax;            /* T30 Fax Group 3 data/interface */
 898   int                   faxonline;       /* Fax-channel status             */
 899 #endif
 900   struct tty_struct     *tty;            /* Pointer to corresponding tty   */
 901   atemu                 emu;             /* AT-emulator data               */
 902   struct termios        normal_termios;  /* For saving termios structs     */
 903   struct termios        callout_termios;
 904   wait_queue_head_t     open_wait, close_wait;
 905   struct semaphore      write_sem;
 906 } modem_info;
 907
 908 #define ISDN_MODEM_WINSIZE 8
 909
 910 /* Description of one ISDN-tty */
 911 typedef struct {
 912   int                refcount;                     /* Number of opens        */
 913   struct tty_driver  tty_modem;                    /* tty-device             */
 914   struct tty_driver  cua_modem;                    /* cua-device             */
 915   struct tty_struct  *modem_table[ISDN_MAX_CHANNELS]; /* ?? copied from Orig */
 916   struct termios     *modem_termios[ISDN_MAX_CHANNELS];
 917   struct termios     *modem_termios_locked[ISDN_MAX_CHANNELS];
 918   modem_info         info[ISDN_MAX_CHANNELS];      /* Private data           */
 919 } modem;
 920
 921 /*======================= End of ISDN-tty stuff ============================*/
 922
 923 /*======================== Start of V.110 stuff ============================*/
 924 #define V110_BUFSIZE 1024
 925
 926 typedef struct {
 927         int nbytes;                    /* 1 Matrixbyte -> nbytes in stream     */
 928         int nbits;                     /* Number of used bits in streambyte    */
 929         unsigned char key;             /* Bitmask in stream eg. 11 (nbits=2)   */
 930         int decodelen;                 /* Amount of data in decodebuf          */
 931         int SyncInit;                  /* Number of sync frames to send        */
 932         unsigned char *OnlineFrame;    /* Precalculated V110 idle frame        */
 933         unsigned char *OfflineFrame;   /* Precalculated V110 sync Frame        */
 934         int framelen;                  /* Length of frames                     */
 935         int skbuser;                   /* Number of unacked userdata skbs      */
 936         int skbidle;                   /* Number of unacked idle/sync skbs     */
 937         int introducer;                /* Local vars for decoder               */
 938         int dbit;
 939         unsigned char b;
 940         int skbres;                    /* space to reserve in outgoing skb     */
 941         int maxsize;                   /* maxbufsize of lowlevel driver        */
 942         unsigned char *encodebuf;      /* temporary buffer for encoding        */
 943         unsigned char decodebuf[V110_BUFSIZE]; /* incomplete V110 matrices     */
 944 } isdn_v110_stream;
 945
 946 /*========================= End of V.110 stuff =============================*/
 947
 948 /*======================= Start of general stuff ===========================*/
 949
 950 typedef struct {
 951         char *next;
 952         char *private;
 953 } infostruct;
 954
 955 typedef struct isdn_module {
 956         struct isdn_module *prev;
 957         struct isdn_module *next;
 958         char *name;
 959         int (*get_free_channel)(int, int, int, int, int);
 960         int (*free_channel)(int, int, int);
 961         int (*status_callback)(isdn_ctrl *);
 962         int (*command)(isdn_ctrl *);
 963         int (*receive_callback)(int, int, struct sk_buff *);
 964         int (*writebuf_skb)(int, int, int, struct sk_buff *);
 965         int (*net_start_xmit)(struct sk_buff *, struct net_device *);
 966         int (*net_receive)(struct net_device *, struct sk_buff *);
 967         int (*net_open)(struct net_device *);
 968         int (*net_close)(struct net_device *);
 969         int priority;
 970 } isdn_module;
 971
 972 #define DRV_FLAG_RUNNING 1
 973 #define DRV_FLAG_REJBUS  2
 974 #define DRV_FLAG_LOADED  4
 975
 976 /* Description of hardware-level-driver */
 977 typedef struct {
 978         ulong               online;           /* Channel-Online flags             */
 979         ulong               flags;            /* Misc driver Flags                */
 980         int                 locks;            /* Number of locks for this driver  */
 981         int                 channels;         /* Number of channels               */
 982         wait_queue_head_t   st_waitq;         /* Wait-Queue for status-read's     */
 983         int                 maxbufsize;       /* Maximum Buffersize supported     */
 984         unsigned long       pktcount;         /* Until now: unused                */
 985         int                 stavail;          /* Chars avail on Status-device     */
 986         isdn_if            *interface;        /* Interface to driver              */
 987         int                *rcverr;           /* Error-counters for B-Ch.-receive */
 988         int                *rcvcount;         /* Byte-counters for B-Ch.-receive  */
 989 #ifdef CONFIG_ISDN_AUDIO
 990         unsigned long      DLEflag;           /* Flags: Insert DLE at next read   */
 991 #endif
 992         struct sk_buff_head *rpqueue;         /* Pointers to start of Rcv-Queue   */
 993         wait_queue_head_t  *rcv_waitq;       /* Wait-Queues for B-Channel-Reads  */
 994         wait_queue_head_t  *snd_waitq;       /* Wait-Queue for B-Channel-Send's  */
 995         char               msn2eaz[10][ISDN_MSNLEN];  /* Mapping-Table MSN->EAZ   */
 996 } driver;
 997
 998 /* Main driver-data */
 999 typedef struct isdn_devt {
1000         unsigned short    flags;                       /* Bitmapped Flags:           */
1001         /*                            */
1002         int               drivers;                     /* Current number of drivers  */
1003         int               channels;                    /* Current number of channels */
1004         int               net_verbose;               /* Verbose-Flag               */
1005         int               modempoll;                   /* Flag: tty-read active      */
1006         int               tflags;                    /* Timer-Flags:               */
1007         /*  see ISDN_TIMER_..defines  */
1008         int               global_flags;
1009         infostruct        *infochain;                /* List of open info-devs.    */
1010         wait_queue_head_t info_waitq;               /* Wait-Queue for isdninfo    */
1011         struct timer_list timer;                       /* Misc.-function Timer       */
1012         int               chanmap[ISDN_MAX_CHANNELS];/* Map minor->device-channel  */
1013         int               drvmap[ISDN_MAX_CHANNELS]; /* Map minor->driver-index    */
1014         int               usage[ISDN_MAX_CHANNELS];  /* Used by tty/ip/voice       */
1015         char              num[ISDN_MAX_CHANNELS][ISDN_MSNLEN];
1016         /* Remote number of active ch.*/
1017         int               m_idx[ISDN_MAX_CHANNELS];  /* Index for mdm....          */
1018         driver            *drv[ISDN_MAX_DRIVERS];    /* Array of drivers           */
1019         isdn_net_dev      *netdev;                     /* Linked list of net-if's    */
1020         char              drvid[ISDN_MAX_DRIVERS][20];/* Driver-ID                 */
1021         struct task_struct *profd;                   /* For iprofd                 */
1022         modem             mdm;                 /* tty-driver-data            */
1023         isdn_net_dev      *rx_netdev[ISDN_MAX_CHANNELS]; /* rx netdev-pointers     */
1024         isdn_net_dev      *st_netdev[ISDN_MAX_CHANNELS]; /* stat netdev-pointers   */
1025         ulong             ibytes[ISDN_MAX_CHANNELS]; /* Statistics incoming bytes  */
1026         ulong             obytes[ISDN_MAX_CHANNELS]; /* Statistics outgoing bytes  */
1027         int               v110emu[ISDN_MAX_CHANNELS];/* V.110 emulator-mode 0=none */
1028         atomic_t          v110use[ISDN_MAX_CHANNELS];/* Usage-Semaphore for stream */
1029         isdn_v110_stream  *v110[ISDN_MAX_CHANNELS];  /* V.110 private data         */
1030         struct semaphore  sem;                       /* serialize list access*/
1031         isdn_module       *modules;
1032         unsigned long     global_features;
1033 #ifdef CONFIG_DEVFS_FS
1034         devfs_handle_t devfs_handle_isdninfo;
1035         devfs_handle_t devfs_handle_isdnctrl;
1036         devfs_handle_t devfs_handle_isdnX[ISDN_MAX_CHANNELS];
1037         devfs_handle_t devfs_handle_isdnctrlX[ISDN_MAX_CHANNELS];
1038 #ifdef CONFIG_ISDN_PPP
1039         devfs_handle_t devfs_handle_ipppX[ISDN_MAX_CHANNELS];
1040 #endif
1041 #endif /* CONFIG_DEVFS_FS */
1042 } isdn_dev;
1043
1044 extern isdn_dev *dev;
1045
1046
1047
1048 /* Utility-Macros */
1049 #define MIN(a,b) ((a<b)?a:b)
1050 #define MAX(a,b) ((a>b)?a:b)
1051 #endif /* __KERNEL__ */
1052 #endif /* isdn_h */