include/linux/isdn.h

   1 /* $Id: isdn.h,v 1.37 1998/02/22 19:45:24 fritz Exp $
   2  *
   3  * Main header for the Linux ISDN subsystem (linklevel).
   4  *
   5  * Copyright 1994,95,96 by Fritz Elfert (fritz@wuemaus.franken.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  * Note: This file differs from the corresponding revision as present in the
  24  * isdn4linux CVS repository because some later bug fixes have been extracted
  25  * from the repository and merged into this file. -- Henner Eisen
  26  *
  27  * $Log: isdn.h,v $
  28  * Revision 1.37  1998/02/22 19:45:24  fritz
  29  * Some changes regarding V.110
  30  *
  31  * Revision 1.36  1998/02/20 17:35:55  fritz
  32  * Added V.110 stuff.
  33  *
  34  * Revision 1.35  1998/01/31 22:14:14  keil
  35  * changes for 2.1.82
  36  *
  37  * Revision 1.34  1997/10/09 21:28:11  fritz
  38  * New HL<->LL interface:
  39  *   New BSENT callback with nr. of bytes included.
  40  *   Sending without ACK.
  41  *   New L1 error status (not yet in use).
  42  *   Cleaned up obsolete structures.
  43  * Implemented Cisco-SLARP.
  44  * Changed local net-interface data to be dynamically allocated.
  45  * Removed old 2.0 compatibility stuff.
  46  *
  47  * Revision 1.33  1997/08/21 14:44:22  fritz
  48  * Moved triggercps to end of struct for backwards-compatibility.
  49  *
  50  * Revision 1.32  1997/08/21 09:49:46  fritz
  51  * Increased NET_DV
  52  *
  53  * Revision 1.31  1997/06/22 11:57:07  fritz
  54  * Added ability to adjust slave triggerlevel.
  55  *
  56  * Revision 1.30  1997/06/17 13:07:23  hipp
  57  * compression changes , MP changes
  58  *
  59  * Revision 1.29  1997/05/27 15:18:02  fritz
  60  * Added changes for recent 2.1.x kernels:
  61  *   changed return type of isdn_close
  62  *   queue_task_* -> queue_task
  63  *   clear/set_bit -> test_and_... where apropriate.
  64  *   changed type of hard_header_cache parameter.
  65  *
  66  * Revision 1.28  1997/03/07 01:33:01  fritz
  67  * Added proper ifdef's for CONFIG_ISDN_AUDIO
  68  *
  69  * Revision 1.27  1997/03/05 21:11:49  fritz
  70  * Minor fixes.
  71  *
  72  * Revision 1.26  1997/02/28 02:37:53  fritz
  73  * Added some comments.
  74  *
  75  * Revision 1.25  1997/02/23 16:54:23  hipp
  76  * some initial changes for future PPP compresion
  77  *
  78  * Revision 1.24  1997/02/18 09:42:45  fritz
  79  * Bugfix: Increased ISDN_MODEM_ANZREG.
  80  * Increased TTY_DV.
  81  *
  82  * Revision 1.23  1997/02/10 22:07:13  fritz
  83  * Added 2 modem registers for numbering plan and screening info.
  84  *
  85  * Revision 1.22  1997/02/03 23:42:08  fritz
  86  * Added ISDN_TIMER_RINGING
  87  * Misc. changes for Kernel 2.1.X compatibility
  88  *
  89  * Revision 1.21  1997/01/17 01:19:10  fritz
  90  * Applied chargeint patch.
  91  *
  92  * Revision 1.20  1997/01/17 00:41:19  fritz
  93  * Increased TTY_DV.
  94  *
  95  * Revision 1.19  1997/01/14 01:41:07  fritz
  96  * Added ATI2 related variables.
  97  * Added variables for audio support in skbuffs.
  98  *
  99  * Revision 1.18  1996/11/06 17:37:50  keil
 100  * more changes for 2.1.X
 101  *
 102  * Revision 1.17  1996/09/07 12:53:57  hipp
 103  * moved a few isdn_ppp.c specific defines to drives/isdn/isdn_ppp.h
 104  *
 105  * Revision 1.16  1996/08/12 16:20:56  hipp
 106  * renamed ppp_minor to ppp_slot
 107  *
 108  * Revision 1.15  1996/06/15 14:56:57  fritz
 109  * Added version signatures for data structures used
 110  * by userlevel programs.
 111  *
 112  * Revision 1.14  1996/06/06 21:24:23  fritz
 113  * Started adding support for suspend/resume.
 114  *
 115  * Revision 1.13  1996/06/05 02:18:20  fritz
 116  * Added DTMF decoding stuff.
 117  *
 118  * Revision 1.12  1996/06/03 19:55:08  fritz
 119  * Fixed typos.
 120  *
 121  * Revision 1.11  1996/05/31 01:37:47  fritz
 122  * Minor changes, due to changes in isdn_tty.c
 123  *
 124  * Revision 1.10  1996/05/18 01:37:18  fritz
 125  * Added spelling corrections and some minor changes
 126  * to stay in sync with kernel.
 127  *
 128  * Revision 1.9  1996/05/17 03:58:20  fritz
 129  * Added flags for DLE handling.
 130  *
 131  * Revision 1.8  1996/05/11 21:49:55  fritz
 132  * Removed queue management variables.
 133  * Changed queue management to use sk_buffs.
 134  *
 135  * Revision 1.7  1996/05/07 09:10:06  fritz
 136  * Reorganized tty-related structs.
 137  *
 138  * Revision 1.6  1996/05/06 11:38:27  hipp
 139  * minor change in ippp struct
 140  *
 141  * Revision 1.5  1996/04/30 11:03:16  fritz
 142  * Added Michael's ippp-bind patch.
 143  *
 144  * Revision 1.4  1996/04/29 23:00:02  fritz
 145  * Added variables for voice-support.
 146  *
 147  * Revision 1.3  1996/04/20 16:54:58  fritz
 148  * Increased maximum number of channels.
 149  * Added some flags for isdn_net to handle callback more reliable.
 150  * Fixed delay-definitions to be more accurate.
 151  * Misc. typos
 152  *
 153  * Revision 1.2  1996/02/11 02:10:02  fritz
 154  * Changed IOCTL-names
 155  * Added rx_netdev, st_netdev, first_skb, org_hcb, and org_hcu to
 156  * Netdevice-local struct.
 157  *
 158  * Revision 1.1  1996/01/10 20:55:07  fritz
 159  * Initial revision
 160  *
 161  */
 162
 163 #ifndef isdn_h
 164 #define isdn_h
 165
 166 #include <linux/ioctl.h>
 167
 168 #define ISDN_TTY_MAJOR    43
 169 #define ISDN_TTYAUX_MAJOR 44
 170 #define ISDN_MAJOR        45
 171
 172 /* The minor-devicenumbers for Channel 0 and 1 are used as arguments for
 173  * physical Channel-Mapping, so they MUST NOT be changed without changing
 174  * the correspondent code in isdn.c
 175  */
 176
 177 #define ISDN_MAX_DRIVERS    32
 178 #define ISDN_MAX_CHANNELS   64
 179 #define ISDN_MINOR_B        0
 180 #define ISDN_MINOR_BMAX     (ISDN_MAX_CHANNELS-1)
 181 #define ISDN_MINOR_CTRL     ISDN_MAX_CHANNELS
 182 #define ISDN_MINOR_CTRLMAX  (2*ISDN_MAX_CHANNELS-1)
 183 #define ISDN_MINOR_PPP      (2*ISDN_MAX_CHANNELS)
 184 #define ISDN_MINOR_PPPMAX   (3*ISDN_MAX_CHANNELS-1)
 185 #define ISDN_MINOR_STATUS   255
 186
 187 /* New ioctl-codes */
 188 #define IIOCNETAIF  _IO('I',1)
 189 #define IIOCNETDIF  _IO('I',2)
 190 #define IIOCNETSCF  _IO('I',3)
 191 #define IIOCNETGCF  _IO('I',4)
 192 #define IIOCNETANM  _IO('I',5)
 193 #define IIOCNETDNM  _IO('I',6)
 194 #define IIOCNETGNM  _IO('I',7)
 195 #define IIOCGETSET  _IO('I',8)
 196 #define IIOCSETSET  _IO('I',9)
 197 #define IIOCSETVER  _IO('I',10)
 198 #define IIOCNETHUP  _IO('I',11)
 199 #define IIOCSETGST  _IO('I',12)
 200 #define IIOCSETBRJ  _IO('I',13)
 201 #define IIOCSIGPRF  _IO('I',14)
 202 #define IIOCGETPRF  _IO('I',15)
 203 #define IIOCSETPRF  _IO('I',16)
 204 #define IIOCGETMAP  _IO('I',17)
 205 #define IIOCSETMAP  _IO('I',18)
 206 #define IIOCNETASL  _IO('I',19)
 207 #define IIOCNETDIL  _IO('I',20)
 208 #define IIOCGETCPS  _IO('I',21)
 209 #define IIOCGETDVR  _IO('I',22)
 210
 211 #define IIOCNETALN  _IO('I',32)
 212 #define IIOCNETDLN  _IO('I',33)
 213
 214 #define IIOCDBGVAR  _IO('I',127)
 215
 216 #define IIOCDRVCTL  _IO('I',128)
 217
 218 /* Packet encapsulations for net-interfaces */
 219 #define ISDN_NET_ENCAP_ETHER      0
 220 #define ISDN_NET_ENCAP_RAWIP      1
 221 #define ISDN_NET_ENCAP_IPTYP      2
 222 #define ISDN_NET_ENCAP_CISCOHDLC  3 /* Without SLARP and keepalive */
 223 #define ISDN_NET_ENCAP_SYNCPPP    4
 224 #define ISDN_NET_ENCAP_UIHDLC     5
 225 #define ISDN_NET_ENCAP_CISCOHDLCK 6 /* With SLARP and keepalive    */
 226 #define ISDN_NET_ENCAP_X25IFACE   7 /* Documentation/networking/x25-iface.txt*/
 227 #define ISDN_NET_ENCAP_MAX_ENCAP  ISDN_NET_ENCAP_X25IFACE
 228 /* Facility which currently uses an ISDN-channel */
 229 #define ISDN_USAGE_NONE       0
 230 #define ISDN_USAGE_RAW        1
 231 #define ISDN_USAGE_MODEM      2
 232 #define ISDN_USAGE_NET        3
 233 #define ISDN_USAGE_VOICE      4
 234 #define ISDN_USAGE_FAX        5
 235 #define ISDN_USAGE_MASK       7 /* Mask to get plain usage */
 236 #define ISDN_USAGE_EXCLUSIVE 64 /* This bit is set, if channel is exclusive */
 237 #define ISDN_USAGE_OUTGOING 128 /* This bit is set, if channel is outgoing  */
 238
 239 #define ISDN_MODEM_ANZREG    23        /* Number of Modem-Registers        */
 240 #define ISDN_MSNLEN          20
 241
 242 typedef struct {
 243   char drvid[25];
 244   unsigned long arg;
 245 } isdn_ioctl_struct;
 246
 247 typedef struct {
 248   unsigned long isdndev;
 249   unsigned long atmodem[ISDN_MAX_CHANNELS];
 250   unsigned long info[ISDN_MAX_CHANNELS];
 251 } debugvar_addr;
 252
 253 typedef struct {
 254   char name[10];
 255   char phone[ISDN_MSNLEN];
 256   int  outgoing;
 257 } isdn_net_ioctl_phone;
 258
 259 #define NET_DV 0x04 /* Data version for net_cfg     */
 260 #define TTY_DV 0x04 /* Data version for iprofd etc. */
 261
 262 typedef struct {
 263   char name[10];     /* Name of interface                     */
 264   char master[10];   /* Name of Master for Bundling           */
 265   char slave[10];    /* Name of Slave for Bundling            */
 266   char eaz[256];     /* EAZ/MSN                               */
 267   char drvid[25];    /* DriverId for Bindings                 */
 268   int  onhtime;      /* Hangup-Timeout                        */
 269   int  charge;       /* Charge-Units                          */
 270   int  l2_proto;     /* Layer-2 protocol                      */
 271   int  l3_proto;     /* Layer-3 protocol                      */
 272   int  p_encap;      /* Encapsulation                         */
 273   int  exclusive;    /* Channel, if bound exclusive           */
 274   int  dialmax;      /* Dial Retry-Counter                    */
 275   int  slavedelay;   /* Delay until slave starts up           */
 276   int  cbdelay;      /* Delay before Callback                 */
 277   int  chargehup;    /* Flag: Charge-Hangup                   */
 278   int  ihup;         /* Flag: Hangup-Timeout on incoming line */
 279   int  secure;       /* Flag: Secure                          */
 280   int  callback;     /* Flag: Callback                        */
 281   int  cbhup;        /* Flag: Reject Call before Callback     */
 282   int  pppbind;      /* ippp device for bindings              */
 283   int  chargeint;    /* Use fixed charge interval length      */
 284   int  triggercps;   /* BogoCPS needed for triggering slave   */
 285 } isdn_net_ioctl_cfg;
 286
 287 #ifdef __KERNEL__
 288
 289 #ifndef STANDALONE
 290 #include <linux/config.h>
 291 #endif
 292 #include <linux/errno.h>
 293 #include <linux/fs.h>
 294 #include <linux/major.h>
 295 #include <asm/segment.h>
 296 #include <asm/io.h>
 297 #include <linux/kernel.h>
 298 #include <linux/signal.h>
 299 #include <linux/malloc.h>
 300 #include <linux/timer.h>
 301 #include <linux/wait.h>
 302 #include <linux/tty.h>
 303 #include <linux/tty_flip.h>
 304 #include <linux/serial_reg.h>
 305 #include <linux/fcntl.h>
 306 #include <linux/types.h>
 307 #include <linux/interrupt.h>
 308 #include <linux/ip.h>
 309 #include <linux/in.h>
 310 #include <linux/netdevice.h>
 311 #include <linux/etherdevice.h>
 312 #include <linux/skbuff.h>
 313 #include <linux/tcp.h>
 314
 315 #ifdef CONFIG_ISDN_PPP
 316
 317 #ifdef CONFIG_ISDN_PPP_VJ
 318 #  include <net/slhc_vj.h>
 319 #endif
 320
 321 #include <linux/ppp_defs.h>
 322 #include <linux/if_ppp.h>
 323 #include <linux/if_pppvar.h>
 324
 325 #include <linux/isdn_ppp.h>
 326 #endif
 327
 328 #ifdef CONFIG_ISDN_X25
 329 #  include <linux/concap.h>
 330 #endif
 331
 332 #include <linux/isdnif.h>
 333
 334 #define ISDN_DRVIOCTL_MASK       0x7f  /* Mask for Device-ioctl */
 335
 336 /* Until now unused */
 337 #define ISDN_SERVICE_VOICE 1
 338 #define ISDN_SERVICE_AB    1<<1
 339 #define ISDN_SERVICE_X21   1<<2
 340 #define ISDN_SERVICE_G4    1<<3
 341 #define ISDN_SERVICE_BTX   1<<4
 342 #define ISDN_SERVICE_DFUE  1<<5
 343 #define ISDN_SERVICE_X25   1<<6
 344 #define ISDN_SERVICE_TTX   1<<7
 345 #define ISDN_SERVICE_MIXED 1<<8
 346 #define ISDN_SERVICE_FW    1<<9
 347 #define ISDN_SERVICE_GTEL  1<<10
 348 #define ISDN_SERVICE_BTXN  1<<11
 349 #define ISDN_SERVICE_BTEL  1<<12
 350
 351 /* Macros checking plain usage */
 352 #define USG_NONE(x)         ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NONE)
 353 #define USG_RAW(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_RAW)
 354 #define USG_MODEM(x)        ((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM)
 355 #define USG_VOICE(x)        ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)
 356 #define USG_NET(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NET)
 357 #define USG_OUTGOING(x)     ((x & ISDN_USAGE_OUTGOING)==ISDN_USAGE_OUTGOING)
 358 #define USG_MODEMORVOICE(x) (((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM) || \
 359                              ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)     )
 360
 361 /* Timer-delays and scheduling-flags */
 362 #define ISDN_TIMER_RES         3                         /* Main Timer-Resolution   */
 363 #define ISDN_TIMER_02SEC       (HZ/(ISDN_TIMER_RES+1)/5) /* Slow-Timer1 .2 sec      */
 364 #define ISDN_TIMER_1SEC        (HZ/(ISDN_TIMER_RES+1))   /* Slow-Timer2 1 sec       */
 365 #define ISDN_TIMER_RINGING     5 /* tty RINGs = ISDN_TIMER_1SEC * this factor       */
 366 #define ISDN_TIMER_KEEPINT    10 /* Cisco-Keepalive = ISDN_TIMER_1SEC * this factor */
 367 #define ISDN_TIMER_MODEMREAD   1
 368 #define ISDN_TIMER_MODEMPLUS   2
 369 #define ISDN_TIMER_MODEMRING   4
 370 #define ISDN_TIMER_MODEMXMIT   8
 371 #define ISDN_TIMER_NETDIAL    16
 372 #define ISDN_TIMER_NETHANGUP  32
 373 #define ISDN_TIMER_IPPP       64
 374 #define ISDN_TIMER_KEEPALIVE 128 /* Cisco-Keepalive */
 375 #define ISDN_TIMER_FAST      (ISDN_TIMER_MODEMREAD | ISDN_TIMER_MODEMPLUS | \
 376                               ISDN_TIMER_MODEMXMIT)
 377 #define ISDN_TIMER_SLOW      (ISDN_TIMER_MODEMRING | ISDN_TIMER_NETHANGUP | \
 378                               ISDN_TIMER_NETDIAL | ISDN_TIMER_KEEPALIVE)
 379
 380 /* Timeout-Values for isdn_net_dial() */
 381 #define ISDN_TIMER_DTIMEOUT10 (10*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
 382 #define ISDN_TIMER_DTIMEOUT15 (15*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
 383
 384 /* GLOBAL_FLAGS */
 385 #define ISDN_GLOBAL_STOPPED 1
 386
 387 /*=================== Start of ip-over-ISDN stuff =========================*/
 388
 389 /* Feature- and status-flags for a net-interface */
 390 #define ISDN_NET_CONNECTED  0x01       /* Bound to ISDN-Channel             */
 391 #define ISDN_NET_SECURE     0x02       /* Accept calls from phonelist only  */
 392 #define ISDN_NET_CALLBACK   0x04       /* activate callback                 */
 393 #define ISDN_NET_CBHUP      0x08       /* hangup before callback            */
 394 #define ISDN_NET_CBOUT      0x10       /* remote machine does callback      */
 395 #if 0
 396 /* Unused??? */
 397 #define ISDN_NET_CLONE      0x08       /* clone a tmp interface when called */
 398 #define ISDN_NET_TMP        0x10       /* tmp interface until getting an IP */
 399 #define ISDN_NET_DYNAMIC    0x20       /* this link is dynamically allocated */
 400 #endif
 401 #define ISDN_NET_MAGIC      0x49344C02 /* for paranoia-checking             */
 402
 403 /* Phone-list-element */
 404 typedef struct {
 405   void *next;
 406   char num[ISDN_MSNLEN];
 407 } isdn_net_phone;
 408
 409 /*
 410    Principles when extending structures for generic encapsulation protocol
 411    ("concap") support:
 412    - Stuff which is hardware specific (here i4l-specific) goes in
 413      the netdev -> local structure (here: isdn_net_local)
 414    - Stuff which is encapsulation protocol specific goes in the structure
 415      which holds the linux device structure (here: isdn_net_device)
 416 */
 417
 418 /* Local interface-data */
 419 typedef struct isdn_net_local_s {
 420   ulong                  magic;
 421   char                   name[10];     /* Name of device                   */
 422   struct enet_statistics stats;        /* Ethernet Statistics              */
 423   int                    isdn_device;  /* Index to isdn-device             */
 424   int                    isdn_channel; /* Index to isdn-channel            */
 425   int                    ppp_slot;     /* PPPD device slot number          */
 426   int                    pre_device;   /* Preselected isdn-device          */
 427   int                    pre_channel;  /* Preselected isdn-channel         */
 428   int                    exclusive;    /* If non-zero idx to reserved chan.*/
 429   int                    flags;        /* Connection-flags                 */
 430   int                    dialretry;    /* Counter for Dialout-retries      */
 431   int                    dialmax;      /* Max. Number of Dial-retries      */
 432   int                    cbdelay;      /* Delay before Callback starts     */
 433   int                    dtimer;       /* Timeout-counter for dialing      */
 434   char                   msn[ISDN_MSNLEN]; /* MSNs/EAZs for this interface */
 435   u_char                 cbhup;        /* Flag: Reject Call before Callback*/
 436   u_char                 dialstate;    /* State for dialing                */
 437   u_char                 p_encap;      /* Packet encapsulation             */
 438                                        /*   0 = Ethernet over ISDN         */
 439                                        /*   1 = RAW-IP                     */
 440                                        /*   2 = IP with type field         */
 441   u_char                 l2_proto;     /* Layer-2-protocol                 */
 442                                        /* See ISDN_PROTO_L2..-constants in */
 443                                        /* isdnif.h                         */
 444                                        /*   0 = X75/LAPB with I-Frames     */
 445                                        /*   1 = X75/LAPB with UI-Frames    */
 446                                        /*   2 = X75/LAPB with BUI-Frames   */
 447                                        /*   3 = HDLC                       */
 448   u_char                 l3_proto;     /* Layer-3-protocol                 */
 449                                        /* See ISDN_PROTO_L3..-constants in */
 450                                        /* isdnif.h                         */
 451                                        /*   0 = Transparent                */
 452   int                    huptimer;     /* Timeout-counter for auto-hangup  */
 453   int                    charge;       /* Counter for charging units       */
 454   int                    chargetime;   /* Timer for Charging info          */
 455   int                    hupflags;     /* Flags for charge-unit-hangup:    */
 456                                        /* bit0: chargeint is invalid       */
 457                                        /* bit1: Getting charge-interval    */
 458                                        /* bit2: Do charge-unit-hangup      */
 459                                        /* bit3: Do hangup even on incoming */
 460   int                    outgoing;     /* Flag: outgoing call              */
 461   int                    onhtime;      /* Time to keep link up             */
 462   int                    chargeint;    /* Interval between charge-infos    */
 463   int                    onum;         /* Flag: at least 1 outgoing number */
 464   int                    cps;          /* current speed of this interface  */
 465   int                    transcount;   /* byte-counter for cps-calculation */
 466   int                    sqfull;       /* Flag: netdev-queue overloaded    */
 467   ulong                  sqfull_stamp; /* Start-Time of overload           */
 468   ulong                  slavedelay;   /* Dynamic bundling delaytime       */
 469   int                    triggercps;   /* BogoCPS needed for trigger slave */
 470   struct device          *srobin;      /* Ptr to Master device for slaves  */
 471   isdn_net_phone         *phone[2];    /* List of remote-phonenumbers      */
 472                                        /* phone[0] = Incoming Numbers      */
 473                                        /* phone[1] = Outgoing Numbers      */
 474   isdn_net_phone         *dial;        /* Pointer to dialed number         */
 475   struct device          *master;      /* Ptr to Master device for slaves  */
 476   struct device          *slave;       /* Ptr to Slave device for masters  */
 477   struct isdn_net_local_s *next;       /* Ptr to next link in bundle       */
 478   struct isdn_net_local_s *last;       /* Ptr to last link in bundle       */
 479   struct isdn_net_dev_s  *netdev;      /* Ptr to netdev                    */
 480   struct sk_buff         *first_skb;   /* Ptr to skb that triggers dialing */
 481   struct sk_buff         *sav_skb;     /* Ptr to skb, rejected by LL-driver*/
 482                                        /* Ptr to orig. hard_header_cache   */
 483   int                    (*org_hhc)(
 484                                     struct neighbour *neigh,
 485                                     struct hh_cache *hh);
 486                                        /* Ptr to orig. header_cache_update */
 487   void                   (*org_hcu)(struct hh_cache *,
 488                                     struct device *,
 489                                     unsigned char *);
 490   int  pppbind;                        /* ippp device for bindings         */
 491 #ifdef CONFIG_ISDN_X25
 492   struct concap_device_ops *dops;      /* callbacks used by encapsulator   */
 493 #endif
 494   int  cisco_loop;                     /* Loop counter for Cisco-SLARP     */
 495   ulong cisco_myseq;                   /* Local keepalive seq. for Cisco   */
 496   ulong cisco_yourseq;                 /* Remote keepalive seq. for Cisco  */
 497 } isdn_net_local;
 498
 499 #ifdef CONFIG_ISDN_PPP
 500 struct ippp_bundle {
 501   int mp_mrru;                        /* unused                             */
 502   struct mpqueue *last;               /* currently defined in isdn_net_dev  */
 503   int min;                            /* currently calculated 'on the fly'  */
 504   long next_num;                      /* we wanna see this seq.-number next */
 505   struct sqqueue *sq;
 506   int modify:1;                       /* set to 1 while modifying sqqueue   */
 507   int bundled:1;                      /* bundle active ?                    */
 508 };
 509 #endif
 510
 511 /* the interface itself */
 512 typedef struct isdn_net_dev_s {
 513   isdn_net_local *local;
 514   isdn_net_local *queue;
 515   void           *next;                /* Pointer to next isdn-interface   */
 516   struct device   dev;         /* interface to upper levels        */
 517 #ifdef CONFIG_ISDN_PPP
 518   struct mpqueue *mp_last;
 519   struct ippp_bundle ib;
 520 #endif
 521 #ifdef CONFIG_ISDN_X25
 522   struct concap_proto  *cprot; /* connection oriented encapsulation protocol */
 523 #endif
 524
 525 } isdn_net_dev;
 526
 527 /*===================== End of ip-over-ISDN stuff ===========================*/
 528
 529 /*======================= Start of ISDN-tty stuff ===========================*/
 530
 531 #define ISDN_ASYNC_MAGIC          0x49344C01 /* for paranoia-checking        */
 532 #define ISDN_ASYNC_INITIALIZED    0x80000000 /* port was initialized         */
 533 #define ISDN_ASYNC_CALLOUT_ACTIVE 0x40000000 /* Call out device active       */
 534 #define ISDN_ASYNC_NORMAL_ACTIVE  0x20000000 /* Normal device active         */
 535 #define ISDN_ASYNC_CLOSING        0x08000000 /* Serial port is closing       */
 536 #define ISDN_ASYNC_CTS_FLOW       0x04000000 /* Do CTS flow control          */
 537 #define ISDN_ASYNC_CHECK_CD       0x02000000 /* i.e., CLOCAL                 */
 538 #define ISDN_ASYNC_HUP_NOTIFY         0x0001 /* Notify tty on hangups/closes */
 539 #define ISDN_ASYNC_SESSION_LOCKOUT    0x0100 /* Lock cua opens on session    */
 540 #define ISDN_ASYNC_PGRP_LOCKOUT       0x0200 /* Lock cua opens on pgrp       */
 541 #define ISDN_ASYNC_CALLOUT_NOHUP      0x0400 /* No hangup for cui            */
 542 #define ISDN_ASYNC_SPLIT_TERMIOS      0x0008 /* Sep. termios for dialin/out  */
 543 #define ISDN_SERIAL_XMIT_SIZE           1024 /* Default bufsize for write    */
 544 #define ISDN_SERIAL_XMIT_MAX            4000 /* Maximum bufsize for write    */
 545 #define ISDN_SERIAL_TYPE_NORMAL            1
 546 #define ISDN_SERIAL_TYPE_CALLOUT           2
 547
 548 #ifdef CONFIG_ISDN_AUDIO
 549 /* For using sk_buffs with audio we need some private variables
 550  * within each sk_buff. For this purpose, we declare a struct here,
 551  * and put it always at skb->head. A few macros help accessing the
 552  * variables. Of course, we need to check skb_headroom prior to
 553  * any access.
 554  */
 555 typedef struct isdn_audio_skb {
 556   unsigned short dle_count;
 557   unsigned char  lock;
 558 } isdn_audio_skb;
 559
 560 #define ISDN_AUDIO_SKB_DLECOUNT(skb) (((isdn_audio_skb*)skb->head)->dle_count)
 561 #define ISDN_AUDIO_SKB_LOCK(skb) (((isdn_audio_skb*)skb->head)->lock)
 562 #endif
 563
 564 /* Private data of AT-command-interpreter */
 565 typedef struct atemu {
 566         u_char       profile[ISDN_MODEM_ANZREG]; /* Modem-Regs. Profile 0              */
 567         u_char       mdmreg[ISDN_MODEM_ANZREG];  /* Modem-Registers                    */
 568         char         pmsn[ISDN_MSNLEN];          /* EAZ/MSNs Profile 0                 */
 569         char         msn[ISDN_MSNLEN];           /* EAZ/MSN                            */
 570 #ifdef CONFIG_ISDN_AUDIO
 571         u_char       vpar[10];                   /* Voice-parameters                   */
 572         int          lastDLE;                    /* Flag for voice-coding: DLE seen    */
 573 #endif
 574         int          mdmcmdl;                    /* Length of Modem-Commandbuffer      */
 575         int          pluscount;                  /* Counter for +++ sequence           */
 576         int          lastplus;                   /* Timestamp of last +                */
 577         char         mdmcmd[255];                /* Modem-Commandbuffer                */
 578         unsigned int charge;                     /* Charge units of current connection */
 579 } atemu;
 580
 581 /* Private data (similar to async_struct in <linux/serial.h>) */
 582 typedef struct modem_info {
 583   int                   magic;
 584   int                   flags;           /* defined in tty.h               */
 585   int                   x_char;          /* xon/xoff character             */
 586   int                   mcr;             /* Modem control register         */
 587   int                   msr;             /* Modem status register          */
 588   int                   lsr;             /* Line status register           */
 589   int                   line;
 590   int                   count;           /* # of fd on device              */
 591   int                   blocked_open;    /* # of blocked opens             */
 592   long                  session;         /* Session of opening process     */
 593   long                  pgrp;            /* pgrp of opening process        */
 594   int                   online;          /* 1 = B-Channel is up, drop data */
 595                                          /* 2 = B-Channel is up, deliver d.*/
 596   int                   dialing;         /* Dial in progress               */
 597   int                   rcvsched;        /* Receive needs schedule         */
 598   int                   isdn_driver;     /* Index to isdn-driver           */
 599   int                   isdn_channel;    /* Index to isdn-channel          */
 600   int                   drv_index;       /* Index to dev->usage            */
 601   int                   ncarrier;        /* Flag: schedule NO CARRIER      */
 602   unsigned char         last_cause[8];   /* Last cause message             */
 603   unsigned char         last_num[ISDN_MSNLEN];
 604                                          /* Last phone-number              */
 605   unsigned char         last_l2;         /* Last layer-2 protocol          */
 606   unsigned char         last_si;         /* Last service                   */
 607   unsigned char         last_lhup;       /* Last hangup local?             */
 608   unsigned char         last_dir;        /* Last direction (in or out)     */
 609   struct timer_list     nc_timer;        /* Timer for delayed NO CARRIER   */
 610   int                   send_outstanding;/* # of outstanding send-requests */
 611   int                   xmit_size;       /* max. # of chars in xmit_buf    */
 612   int                   xmit_count;      /* # of chars in xmit_buf         */
 613   unsigned char         *xmit_buf;       /* transmit buffer                */
 614   struct sk_buff_head   xmit_queue;      /* transmit queue                 */
 615 #ifdef CONFIG_ISDN_AUDIO
 616   int                   vonline;         /* Voice-channel status           */
 617                                          /* Bit 0 = recording              */
 618                                          /* Bit 1 = playback               */
 619                                          /* Bit 2 = playback, DLE-ETX seen */
 620   struct sk_buff_head   dtmf_queue;      /* queue for dtmf results         */
 621   void                  *adpcms;         /* state for adpcm decompression  */
 622   void                  *adpcmr;         /* state for adpcm compression    */
 623   void                  *dtmf_state;     /* state for dtmf decoder         */
 624 #endif
 625   struct tty_struct     *tty;            /* Pointer to corresponding tty   */
 626   atemu                 emu;             /* AT-emulator data               */
 627   struct termios        normal_termios;  /* For saving termios structs     */
 628   struct termios        callout_termios;
 629   struct wait_queue     *open_wait;
 630   struct wait_queue     *close_wait;
 631 } modem_info;
 632
 633 #define ISDN_MODEM_WINSIZE 8
 634
 635 /* Description of one ISDN-tty */
 636 typedef struct {
 637   int                refcount;                     /* Number of opens        */
 638   struct tty_driver  tty_modem;                    /* tty-device             */
 639   struct tty_driver  cua_modem;                    /* cua-device             */
 640   struct tty_struct  *modem_table[ISDN_MAX_CHANNELS]; /* ?? copied from Orig */
 641   struct termios     *modem_termios[ISDN_MAX_CHANNELS];
 642   struct termios     *modem_termios_locked[ISDN_MAX_CHANNELS];
 643   modem_info         info[ISDN_MAX_CHANNELS];      /* Private data           */
 644 } modem;
 645
 646 /*======================= End of ISDN-tty stuff ============================*/
 647
 648 /*======================= Start of sync-ppp stuff ==========================*/
 649
 650
 651 #define NUM_RCV_BUFFS     64
 652 #define PPP_HARD_HDR_LEN 4
 653
 654 #ifdef CONFIG_ISDN_PPP
 655
 656 struct sqqueue {
 657   struct sqqueue *next;
 658   long sqno_start;
 659   long sqno_end;
 660   struct sk_buff *skb;
 661   long timer;
 662 };
 663
 664 struct mpqueue {
 665   struct mpqueue *next;
 666   struct mpqueue *last;
 667   long sqno;
 668   struct sk_buff *skb;
 669   int BEbyte;
 670   unsigned long time;
 671 };
 672
 673 struct ippp_buf_queue {
 674   struct ippp_buf_queue *next;
 675   struct ippp_buf_queue *last;
 676   char *buf;                 /* NULL here indicates end of queue */
 677   int len;
 678 };
 679
 680 struct ippp_struct {
 681   struct ippp_struct *next_link;
 682   int state;
 683   struct ippp_buf_queue rq[NUM_RCV_BUFFS]; /* packet queue for isdn_ppp_read() */
 684   struct ippp_buf_queue *first;  /* pointer to (current) first packet */
 685   struct ippp_buf_queue *last;   /* pointer to (current) last used packet in queue */
 686   struct wait_queue *wq;
 687   struct wait_queue *wq1;
 688   struct task_struct *tk;
 689   unsigned int mpppcfg;
 690   unsigned int pppcfg;
 691   unsigned int mru;
 692   unsigned int mpmru;
 693   unsigned int mpmtu;
 694   unsigned int maxcid;
 695   isdn_net_local *lp;
 696   int unit;
 697   int minor;
 698   long last_link_seqno;
 699   long mp_seqno;
 700   long range;
 701 #ifdef CONFIG_ISDN_PPP_VJ
 702   unsigned char *cbuf;
 703   struct slcompress *slcomp;
 704 #endif
 705   unsigned long debug;
 706   struct isdn_ppp_compressor *compressor,*link_compressor;
 707   void *decomp_stat,*comp_stat,*link_decomp_stat,*link_comp_stat;
 708 };
 709
 710 #endif
 711
 712 /*======================== End of sync-ppp stuff ===========================*/
 713
 714 /*======================== Start of V.110 stuff ============================*/
 715 #define V110_BUFSIZE 1024
 716
 717 typedef struct {
 718         int nbytes;                    /* 1 Matrixbyte -> nbytes in stream     */
 719         int nbits;                     /* Number of used bits in streambyte    */
 720         unsigned char key;             /* Bitmask in stream eg. 11 (nbits=2)   */
 721         int decodelen;                 /* Amount of data in decodebuf          */
 722         int SyncInit;                  /* Number of sync frames to send        */
 723         unsigned char *OnlineFrame;    /* Precalculated V110 idle frame        */
 724         unsigned char *OfflineFrame;   /* Precalculated V110 sync Frame        */
 725         int framelen;                  /* Length of frames                     */
 726         int skbuser;                   /* Number of unacked userdata skbs      */
 727         int skbidle;                   /* Number of unacked idle/sync skbs     */
 728         int introducer;                /* Local vars for decoder               */
 729         int dbit;
 730         unsigned char b;
 731         int skbres;                    /* space to reserve in outgoing skb     */
 732         int maxsize;                   /* maxbufsize of lowlevel driver        */
 733         unsigned char *encodebuf;      /* temporary buffer for encoding        */
 734         unsigned char decodebuf[V110_BUFSIZE]; /* incomplete V110 matrices     */
 735 } isdn_v110_stream;
 736
 737 /*========================= End of V.110 stuff =============================*/
 738
 739 /*======================= Start of general stuff ===========================*/
 740
 741 typedef struct {
 742         char *next;
 743         char *private;
 744 } infostruct;
 745
 746 /* Description of hardware-level-driver */
 747 typedef struct {
 748   ulong               flags;            /* Flags                            */
 749   int                 channels;         /* Number of channels               */
 750   int                 reject_bus;       /* Flag: Reject rejected call on bus*/
 751   struct wait_queue  *st_waitq;         /* Wait-Queue for status-read's     */
 752   int                 maxbufsize;       /* Maximum Buffersize supported     */
 753   unsigned long       pktcount;         /* Until now: unused                */
 754   int                 running;          /* Flag: Protocolcode running       */
 755   int                 loaded;           /* Flag: Driver loaded              */
 756   int                 stavail;          /* Chars avail on Status-device     */
 757   isdn_if            *interface;        /* Interface to driver              */
 758   int                *rcverr;           /* Error-counters for B-Ch.-receive */
 759   int                *rcvcount;         /* Byte-counters for B-Ch.-receive  */
 760 #ifdef CONFIG_ISDN_AUDIO
 761   unsigned long      DLEflag;           /* Flags: Insert DLE at next read   */
 762 #endif
 763   struct sk_buff_head *rpqueue;         /* Pointers to start of Rcv-Queue   */
 764   struct wait_queue  **rcv_waitq;       /* Wait-Queues for B-Channel-Reads  */
 765   struct wait_queue  **snd_waitq;       /* Wait-Queue for B-Channel-Send's  */
 766   char               msn2eaz[10][ISDN_MSNLEN];  /* Mapping-Table MSN->EAZ   */
 767 } driver;
 768
 769 /* Main driver-data */
 770 typedef struct isdn_devt {
 771   unsigned short    flags;                     /* Bitmapped Flags:           */
 772                                                /*                            */
 773   int               drivers;                   /* Current number of drivers  */
 774   int               channels;                  /* Current number of channels */
 775   int               net_verbose;               /* Verbose-Flag               */
 776   int               modempoll;                 /* Flag: tty-read active      */
 777   int               tflags;                    /* Timer-Flags:               */
 778                                                /*  see ISDN_TIMER_..defines  */
 779   int               global_flags;
 780   infostruct        *infochain;                /* List of open info-devs.    */
 781   struct wait_queue *info_waitq;               /* Wait-Queue for isdninfo    */
 782   struct timer_list timer;                     /* Misc.-function Timer       */
 783   int               chanmap[ISDN_MAX_CHANNELS];/* Map minor->device-channel  */
 784   int               drvmap[ISDN_MAX_CHANNELS]; /* Map minor->driver-index    */
 785   int               usage[ISDN_MAX_CHANNELS];  /* Used by tty/ip/voice       */
 786   char              num[ISDN_MAX_CHANNELS][ISDN_MSNLEN];
 787                                                /* Remote number of active ch.*/
 788   int               m_idx[ISDN_MAX_CHANNELS];  /* Index for mdm....          */
 789   driver            *drv[ISDN_MAX_DRIVERS];    /* Array of drivers           */
 790   isdn_net_dev      *netdev;                   /* Linked list of net-if's    */
 791   char              drvid[ISDN_MAX_DRIVERS][20];/* Driver-ID                 */
 792   struct task_struct *profd;                   /* For iprofd                 */
 793   modem             mdm;                       /* tty-driver-data            */
 794   isdn_net_dev      *rx_netdev[ISDN_MAX_CHANNELS]; /* rx netdev-pointers     */
 795   isdn_net_dev      *st_netdev[ISDN_MAX_CHANNELS]; /* stat netdev-pointers   */
 796   ulong             ibytes[ISDN_MAX_CHANNELS]; /* Statistics incoming bytes  */
 797   ulong             obytes[ISDN_MAX_CHANNELS]; /* Statistics outgoing bytes  */
 798   int               v110emu[ISDN_MAX_CHANNELS];/* V.110 emulator-mode 0=none */
 799   atomic_t          v110use[ISDN_MAX_CHANNELS];/* Usage-Semaphore for stream */
 800   isdn_v110_stream  *v110[ISDN_MAX_CHANNELS];  /* V.110 private data         */
 801   struct semaphore  sem;                       /* serialize list access*/
 802 } isdn_dev;
 803
 804 extern isdn_dev *dev;
 805
 806 /* Utility-Macros */
 807 #define MIN(a,b) ((a<b)?a:b)
 808 #define MAX(a,b) ((a>b)?a:b)
 809
 810 #endif /* __KERNEL__ */
 811 #endif /* isdn_h */