include/linux/isdn.h

   1 /* $Id: isdn.h,v 1.111 2000/11/25 17:01:02 kai 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  */
  24
  25 #ifndef isdn_h
  26 #define isdn_h
  27
  28 #include <linux/config.h>
  29 #include <linux/ioctl.h>
  30
  31 #define ISDN_TTY_MAJOR    43
  32 #define ISDN_TTYAUX_MAJOR 44
  33 #define ISDN_MAJOR        45
  34
  35 /* The minor-devicenumbers for Channel 0 and 1 are used as arguments for
  36  * physical Channel-Mapping, so they MUST NOT be changed without changing
  37  * the correspondent code in isdn.c
  38  */
  39
  40 #ifdef CONFIG_COBALT_MICRO_SERVER
  41 /* Save memory */
  42 #define ISDN_MAX_DRIVERS    2
  43 #define ISDN_MAX_CHANNELS   8
  44 #else
  45 #define ISDN_MAX_DRIVERS    32
  46 #define ISDN_MAX_CHANNELS   64
  47 #endif
  48 #define ISDN_MINOR_B        0
  49 #define ISDN_MINOR_BMAX     (ISDN_MAX_CHANNELS-1)
  50 #define ISDN_MINOR_CTRL     64
  51 #define ISDN_MINOR_CTRLMAX  (64 + (ISDN_MAX_CHANNELS-1))
  52 #define ISDN_MINOR_PPP      128
  53 #define ISDN_MINOR_PPPMAX   (128 + (ISDN_MAX_CHANNELS-1))
  54 #define ISDN_MINOR_STATUS   255
  55
  56 #undef CONFIG_ISDN_WITH_ABC_CALLB
  57 #undef CONFIG_ISDN_WITH_ABC_UDP_CHECK
  58 #undef CONFIG_ISDN_WITH_ABC_UDP_CHECK_HANGUP
  59 #undef CONFIG_ISDN_WITH_ABC_UDP_CHECK_DIAL
  60 #undef CONFIG_ISDN_WITH_ABC_OUTGOING_EAZ
  61 #undef CONFIG_ISDN_WITH_ABC_LCR_SUPPORT
  62 #undef CONFIG_ISDN_WITH_ABC_IPV4_TCP_KEEPALIVE
  63 #undef CONFIG_ISDN_WITH_ABC_IPV4_DYNADDR
  64 #undef CONFIG_ISDN_WITH_ABC_RCV_NO_HUPTIMER
  65 #undef CONFIG_ISDN_WITH_ABC_ICALL_BIND
  66 #undef CONFIG_ISDN_WITH_ABC_CH_EXTINUSE
  67 #undef CONFIG_ISDN_WITH_ABC_CONN_ERROR
  68 #undef CONFIG_ISDN_WITH_ABC_RAWIPCOMPRESS
  69 #undef CONFIG_ISDN_WITH_ABC_IPTABLES_NETFILTER
  70
  71
  72 /* New ioctl-codes */
  73 #define IIOCNETAIF  _IO('I',1)
  74 #define IIOCNETDIF  _IO('I',2)
  75 #define IIOCNETSCF  _IO('I',3)
  76 #define IIOCNETGCF  _IO('I',4)
  77 #define IIOCNETANM  _IO('I',5)
  78 #define IIOCNETDNM  _IO('I',6)
  79 #define IIOCNETGNM  _IO('I',7)
  80 #define IIOCGETSET  _IO('I',8) /* no longer supported */
  81 #define IIOCSETSET  _IO('I',9) /* no longer supported */
  82 #define IIOCSETVER  _IO('I',10)
  83 #define IIOCNETHUP  _IO('I',11)
  84 #define IIOCSETGST  _IO('I',12)
  85 #define IIOCSETBRJ  _IO('I',13)
  86 #define IIOCSIGPRF  _IO('I',14)
  87 #define IIOCGETPRF  _IO('I',15)
  88 #define IIOCSETPRF  _IO('I',16)
  89 #define IIOCGETMAP  _IO('I',17)
  90 #define IIOCSETMAP  _IO('I',18)
  91 #define IIOCNETASL  _IO('I',19)
  92 #define IIOCNETDIL  _IO('I',20)
  93 #define IIOCGETCPS  _IO('I',21)
  94 #define IIOCGETDVR  _IO('I',22)
  95 #define IIOCNETLCR  _IO('I',23) /* dwabc ioctl for LCR from isdnlog */
  96 #define IIOCNETDWRSET  _IO('I',24) /* dwabc ioctl to reset abc-values to default on a net-interface */
  97
  98 #define IIOCNETALN  _IO('I',32)
  99 #define IIOCNETDLN  _IO('I',33)
 100
 101 #define IIOCNETGPN  _IO('I',34)
 102
 103 #define IIOCDBGVAR  _IO('I',127)
 104
 105 #define IIOCDRVCTL  _IO('I',128)
 106
 107 /* Packet encapsulations for net-interfaces */
 108 #define ISDN_NET_ENCAP_ETHER      0
 109 #define ISDN_NET_ENCAP_RAWIP      1
 110 #define ISDN_NET_ENCAP_IPTYP      2
 111 #define ISDN_NET_ENCAP_CISCOHDLC  3 /* Without SLARP and keepalive */
 112 #define ISDN_NET_ENCAP_SYNCPPP    4
 113 #define ISDN_NET_ENCAP_UIHDLC     5
 114 #define ISDN_NET_ENCAP_CISCOHDLCK 6 /* With SLARP and keepalive    */
 115 #define ISDN_NET_ENCAP_X25IFACE   7 /* Documentation/networking/x25-iface.txt*/
 116 #define ISDN_NET_ENCAP_MAX_ENCAP  ISDN_NET_ENCAP_X25IFACE
 117 /* Facility which currently uses an ISDN-channel */
 118 #define ISDN_USAGE_NONE       0
 119 #define ISDN_USAGE_RAW        1
 120 #define ISDN_USAGE_MODEM      2
 121 #define ISDN_USAGE_NET        3
 122 #define ISDN_USAGE_VOICE      4
 123 #define ISDN_USAGE_FAX        5
 124 #define ISDN_USAGE_MASK       7 /* Mask to get plain usage */
 125 #define ISDN_USAGE_DISABLED  32 /* This bit is set, if channel is disabled */
 126 #define ISDN_USAGE_EXCLUSIVE 64 /* This bit is set, if channel is exclusive */
 127 #define ISDN_USAGE_OUTGOING 128 /* This bit is set, if channel is outgoing  */
 128
 129 #define ISDN_MODEM_NUMREG    24        /* Number of Modem-Registers        */
 130 #define ISDN_LMSNLEN         255 /* Length of tty's Listen-MSN string */
 131 #define ISDN_CMSGLEN         50  /* Length of CONNECT-Message to add for Modem */
 132
 133 #define ISDN_MSNLEN          32
 134 #define NET_DV 0x06  /* Data version for isdn_net_ioctl_cfg   */
 135 #define TTY_DV 0x06  /* Data version for iprofd etc.          */
 136
 137 #define INF_DV 0x01  /* Data version for /dev/isdninfo        */
 138
 139 typedef struct {
 140   char drvid[25];
 141   unsigned long arg;
 142 } isdn_ioctl_struct;
 143
 144 typedef struct {
 145   unsigned long isdndev;
 146   unsigned long atmodem[ISDN_MAX_CHANNELS];
 147   unsigned long info[ISDN_MAX_CHANNELS];
 148 } debugvar_addr;
 149
 150 typedef struct {
 151   char name[10];
 152   char phone[ISDN_MSNLEN];
 153   int  outgoing;
 154 } isdn_net_ioctl_phone;
 155
 156 typedef struct {
 157   char name[10];     /* Name of interface                     */
 158   char master[10];   /* Name of Master for Bundling           */
 159   char slave[10];    /* Name of Slave for Bundling            */
 160   char eaz[256];     /* EAZ/MSN                               */
 161   char drvid[25];    /* DriverId for Bindings                 */
 162   int  onhtime;      /* Hangup-Timeout                        */
 163   int  charge;       /* Charge-Units                          */
 164   int  l2_proto;     /* Layer-2 protocol                      */
 165   int  l3_proto;     /* Layer-3 protocol                      */
 166   int  p_encap;      /* Encapsulation                         */
 167   int  exclusive;    /* Channel, if bound exclusive           */
 168   int  dialmax;      /* Dial Retry-Counter                    */
 169   int  slavedelay;   /* Delay until slave starts up           */
 170   int  cbdelay;      /* Delay before Callback                 */
 171   int  chargehup;    /* Flag: Charge-Hangup                   */
 172   int  ihup;         /* Flag: Hangup-Timeout on incoming line */
 173   int  secure;       /* Flag: Secure                          */
 174   int  callback;     /* Flag: Callback                        */
 175   int  cbhup;        /* Flag: Reject Call before Callback     */
 176   int  pppbind;      /* ippp device for bindings              */
 177   int  chargeint;    /* Use fixed charge interval length      */
 178   int  triggercps;   /* BogoCPS needed for triggering slave   */
 179   int  dialtimeout;  /* Dial-Timeout                          */
 180   int  dialwait;     /* Time to wait after failed dial        */
 181   int  dialmode;     /* Flag: off / on / auto                 */
 182 } isdn_net_ioctl_cfg;
 183
 184 #define ISDN_NET_DIALMODE_MASK 0xC0  /* bits for status                   */
 185 #define  ISDN_NET_DM_OFF        0x00    /* this interface is stopped      */
 186 #define  ISDN_NET_DM_MANUAL     0x40    /* this interface is on (manual)  */
 187 #define  ISDN_NET_DM_AUTO       0x80    /* this interface is autodial     */
 188 #define ISDN_NET_DIALMODE(x) ((&(x))->flags & ISDN_NET_DIALMODE_MASK)
 189
 190 #ifdef __KERNEL__
 191
 192 #include <linux/errno.h>
 193 #include <linux/fs.h>
 194 #include <linux/major.h>
 195 #include <asm/segment.h>
 196 #include <asm/io.h>
 197 #include <linux/kernel.h>
 198 #include <linux/signal.h>
 199 #include <linux/malloc.h>
 200 #include <linux/timer.h>
 201 #include <linux/wait.h>
 202 #include <linux/tty.h>
 203 #include <linux/tty_flip.h>
 204 #include <linux/serial_reg.h>
 205 #include <linux/fcntl.h>
 206 #include <linux/types.h>
 207 #include <linux/interrupt.h>
 208 #include <linux/ip.h>
 209 #include <linux/in.h>
 210 #include <linux/netdevice.h>
 211 #include <linux/etherdevice.h>
 212 #include <linux/skbuff.h>
 213 #include <linux/tcp.h>
 214
 215 #ifdef CONFIG_ISDN_PPP
 216
 217 #ifdef CONFIG_ISDN_PPP_VJ
 218 #  include <net/slhc_vj.h>
 219 #endif
 220
 221 #include <linux/ppp_defs.h>
 222 #include <linux/if_ppp.h>
 223 #include <linux/if_pppvar.h>
 224
 225 #include <linux/isdn_ppp.h>
 226 #endif
 227
 228 #ifdef CONFIG_ISDN_X25
 229 #  include <linux/concap.h>
 230 #endif
 231
 232 #ifdef CONFIG_DEVFS_FS
 233 #  include <linux/devfs_fs_kernel.h>
 234 #endif
 235
 236 #include <linux/isdnif.h>
 237
 238 #define ISDN_DRVIOCTL_MASK       0x7f  /* Mask for Device-ioctl */
 239
 240 /* Until now unused */
 241 #define ISDN_SERVICE_VOICE 1
 242 #define ISDN_SERVICE_AB    1<<1
 243 #define ISDN_SERVICE_X21   1<<2
 244 #define ISDN_SERVICE_G4    1<<3
 245 #define ISDN_SERVICE_BTX   1<<4
 246 #define ISDN_SERVICE_DFUE  1<<5
 247 #define ISDN_SERVICE_X25   1<<6
 248 #define ISDN_SERVICE_TTX   1<<7
 249 #define ISDN_SERVICE_MIXED 1<<8
 250 #define ISDN_SERVICE_FW    1<<9
 251 #define ISDN_SERVICE_GTEL  1<<10
 252 #define ISDN_SERVICE_BTXN  1<<11
 253 #define ISDN_SERVICE_BTEL  1<<12
 254
 255 /* Macros checking plain usage */
 256 #define USG_NONE(x)         ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NONE)
 257 #define USG_RAW(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_RAW)
 258 #define USG_MODEM(x)        ((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM)
 259 #define USG_VOICE(x)        ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)
 260 #define USG_NET(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NET)
 261 #define USG_FAX(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_FAX)
 262 #define USG_OUTGOING(x)     ((x & ISDN_USAGE_OUTGOING)==ISDN_USAGE_OUTGOING)
 263 #define USG_MODEMORVOICE(x) (((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM) || \
 264                              ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)     )
 265
 266 /* Timer-delays and scheduling-flags */
 267 #define ISDN_TIMER_RES         3                         /* Main Timer-Resolution   */
 268 #define ISDN_TIMER_02SEC       (HZ/(ISDN_TIMER_RES+1)/5) /* Slow-Timer1 .2 sec      */
 269 #define ISDN_TIMER_1SEC        (HZ/(ISDN_TIMER_RES+1))   /* Slow-Timer2 1 sec       */
 270 #define ISDN_TIMER_RINGING     5 /* tty RINGs = ISDN_TIMER_1SEC * this factor       */
 271 #define ISDN_TIMER_KEEPINT    10 /* Cisco-Keepalive = ISDN_TIMER_1SEC * this factor */
 272 #define ISDN_TIMER_MODEMREAD   1
 273 #define ISDN_TIMER_MODEMPLUS   2
 274 #define ISDN_TIMER_MODEMRING   4
 275 #define ISDN_TIMER_MODEMXMIT   8
 276 #define ISDN_TIMER_NETDIAL    16
 277 #define ISDN_TIMER_NETHANGUP  32
 278 #define ISDN_TIMER_KEEPALIVE 128 /* Cisco-Keepalive */
 279 #define ISDN_TIMER_CARRIER   256 /* Wait for Carrier */
 280 #define ISDN_TIMER_FAST      (ISDN_TIMER_MODEMREAD | ISDN_TIMER_MODEMPLUS | \
 281                               ISDN_TIMER_MODEMXMIT)
 282 #define ISDN_TIMER_SLOW      (ISDN_TIMER_MODEMRING | ISDN_TIMER_NETHANGUP | \
 283                               ISDN_TIMER_NETDIAL | ISDN_TIMER_KEEPALIVE | \
 284                               ISDN_TIMER_CARRIER)
 285
 286 /* Timeout-Values for isdn_net_dial() */
 287 #define ISDN_TIMER_DTIMEOUT10 (10*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
 288 #define ISDN_TIMER_DTIMEOUT15 (15*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
 289 #define ISDN_TIMER_DTIMEOUT60 (60*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
 290
 291 /* GLOBAL_FLAGS */
 292 #define ISDN_GLOBAL_STOPPED 1
 293
 294 /*=================== Start of ip-over-ISDN stuff =========================*/
 295
 296 /* Feature- and status-flags for a net-interface */
 297 #define ISDN_NET_CONNECTED  0x01       /* Bound to ISDN-Channel             */
 298 #define ISDN_NET_SECURE     0x02       /* Accept calls from phonelist only  */
 299 #define ISDN_NET_CALLBACK   0x04       /* activate callback                 */
 300 #define ISDN_NET_CBHUP      0x08       /* hangup before callback            */
 301 #define ISDN_NET_CBOUT      0x10       /* remote machine does callback      */
 302
 303 #define ISDN_NET_MAGIC      0x49344C02 /* for paranoia-checking             */
 304
 305 /* Phone-list-element */
 306 typedef struct {
 307   void *next;
 308   char num[ISDN_MSNLEN];
 309 } isdn_net_phone;
 310
 311 /*
 312    Principles when extending structures for generic encapsulation protocol
 313    ("concap") support:
 314    - Stuff which is hardware specific (here i4l-specific) goes in
 315      the netdev -> local structure (here: isdn_net_local)
 316    - Stuff which is encapsulation protocol specific goes in the structure
 317      which holds the linux device structure (here: isdn_net_device)
 318 */
 319
 320 /* Local interface-data */
 321 typedef struct isdn_net_local_s {
 322   ulong                  magic;
 323   char                   name[10];     /* Name of device                   */
 324   struct net_device_stats stats;       /* Ethernet Statistics              */
 325   int                    isdn_device;  /* Index to isdn-device             */
 326   int                    isdn_channel; /* Index to isdn-channel            */
 327   int                    ppp_slot;     /* PPPD device slot number          */
 328   int                    pre_device;   /* Preselected isdn-device          */
 329   int                    pre_channel;  /* Preselected isdn-channel         */
 330   int                    exclusive;    /* If non-zero idx to reserved chan.*/
 331   int                    flags;        /* Connection-flags                 */
 332   int                    dialretry;    /* Counter for Dialout-retries      */
 333   int                    dialmax;      /* Max. Number of Dial-retries      */
 334   int                    cbdelay;      /* Delay before Callback starts     */
 335   int                    dtimer;       /* Timeout-counter for dialing      */
 336   char                   msn[ISDN_MSNLEN]; /* MSNs/EAZs for this interface */
 337   u_char                 cbhup;        /* Flag: Reject Call before Callback*/
 338   u_char                 dialstate;    /* State for dialing                */
 339   u_char                 p_encap;      /* Packet encapsulation             */
 340                                        /*   0 = Ethernet over ISDN         */
 341                                        /*   1 = RAW-IP                     */
 342                                        /*   2 = IP with type field         */
 343   u_char                 l2_proto;     /* Layer-2-protocol                 */
 344                                        /* See ISDN_PROTO_L2..-constants in */
 345                                        /* isdnif.h                         */
 346                                        /*   0 = X75/LAPB with I-Frames     */
 347                                        /*   1 = X75/LAPB with UI-Frames    */
 348                                        /*   2 = X75/LAPB with BUI-Frames   */
 349                                        /*   3 = HDLC                       */
 350   u_char                 l3_proto;     /* Layer-3-protocol                 */
 351                                        /* See ISDN_PROTO_L3..-constants in */
 352                                        /* isdnif.h                         */
 353                                        /*   0 = Transparent                */
 354   int                    huptimer;     /* Timeout-counter for auto-hangup  */
 355   int                    charge;       /* Counter for charging units       */
 356   ulong                  chargetime;   /* Timer for Charging info          */
 357   int                    hupflags;     /* Flags for charge-unit-hangup:    */
 358                                        /* bit0: chargeint is invalid       */
 359                                        /* bit1: Getting charge-interval    */
 360                                        /* bit2: Do charge-unit-hangup      */
 361                                        /* bit3: Do hangup even on incoming */
 362   int                    outgoing;     /* Flag: outgoing call              */
 363   int                    onhtime;      /* Time to keep link up             */
 364   int                    chargeint;    /* Interval between charge-infos    */
 365   int                    onum;         /* Flag: at least 1 outgoing number */
 366   int                    cps;          /* current speed of this interface  */
 367   int                    transcount;   /* byte-counter for cps-calculation */
 368   int                    sqfull;       /* Flag: netdev-queue overloaded    */
 369   ulong                  sqfull_stamp; /* Start-Time of overload           */
 370   ulong                  slavedelay;   /* Dynamic bundling delaytime       */
 371   int                    triggercps;   /* BogoCPS needed for trigger slave */
 372   isdn_net_phone         *phone[2];    /* List of remote-phonenumbers      */
 373                                        /* phone[0] = Incoming Numbers      */
 374                                        /* phone[1] = Outgoing Numbers      */
 375   isdn_net_phone         *dial;        /* Pointer to dialed number         */
 376   struct net_device      *master;      /* Ptr to Master device for slaves  */
 377   struct net_device      *slave;       /* Ptr to Slave device for masters  */
 378   struct isdn_net_local_s *next;       /* Ptr to next link in bundle       */
 379   struct isdn_net_local_s *last;       /* Ptr to last link in bundle       */
 380   struct isdn_net_dev_s  *netdev;      /* Ptr to netdev                    */
 381   struct sk_buff_head    super_tx_queue; /* List of supervisory frames to  */
 382                                        /* be transmitted asap              */
 383   atomic_t frame_cnt;                  /* number of frames currently       */
 384                                        /* queued in HL driver              */
 385                                        /* Ptr to orig. hard_header_cache   */
 386   spinlock_t             xmit_lock;    /* used to protect the xmit path of */
 387                                        /* a particular channel (including  */
 388                                        /* the frame_cnt                    */
 389
 390   int                    (*org_hhc)(
 391                                     struct neighbour *neigh,
 392                                     struct hh_cache *hh);
 393                                        /* Ptr to orig. header_cache_update */
 394   void                   (*org_hcu)(struct hh_cache *,
 395                                     struct net_device *,
 396                                     unsigned char *);
 397   int  pppbind;                        /* ippp device for bindings         */
 398   int                                   dialtimeout;    /* How long shall we try on dialing? (jiffies) */
 399   int                                   dialwait;               /* How long shall we wait after failed attempt? (jiffies) */
 400   ulong                                 dialstarted;    /* jiffies of first dialing-attempt */
 401   ulong                                 dialwait_timer; /* jiffies of earliest next dialing-attempt */
 402   int                                   huptimeout;             /* How long will the connection be up? (seconds) */
 403 #ifdef CONFIG_ISDN_X25
 404   struct concap_device_ops *dops;      /* callbacks used by encapsulator   */
 405 #endif
 406   int  cisco_loop;                     /* Loop counter for Cisco-SLARP     */
 407   ulong cisco_myseq;                   /* Local keepalive seq. for Cisco   */
 408   ulong cisco_yourseq;                 /* Remote keepalive seq. for Cisco  */
 409   struct tq_struct tqueue;
 410 } isdn_net_local;
 411
 412 /* the interface itself */
 413 typedef struct isdn_net_dev_s {
 414   isdn_net_local *local;
 415   isdn_net_local *queue;               /* circular list of all bundled
 416                                           channels, which are currently
 417                                           online                           */
 418   spinlock_t queue_lock;               /* lock to protect queue            */
 419   void *next;                          /* Pointer to next isdn-interface   */
 420   struct net_device dev;               /* interface to upper levels        */
 421 #ifdef CONFIG_ISDN_PPP
 422   ippp_bundle * pb;             /* pointer to the common bundle structure
 423                                  * with the the per-bundle data */
 424 #endif
 425 #ifdef CONFIG_ISDN_X25
 426   struct concap_proto  *cprot; /* connection oriented encapsulation protocol */
 427 #endif
 428
 429 } isdn_net_dev;
 430
 431 /*===================== End of ip-over-ISDN stuff ===========================*/
 432
 433 /*======================= Start of ISDN-tty stuff ===========================*/
 434
 435 #define ISDN_ASYNC_MAGIC          0x49344C01 /* for paranoia-checking        */
 436 #define ISDN_ASYNC_INITIALIZED    0x80000000 /* port was initialized         */
 437 #define ISDN_ASYNC_CALLOUT_ACTIVE 0x40000000 /* Call out device active       */
 438 #define ISDN_ASYNC_NORMAL_ACTIVE  0x20000000 /* Normal device active         */
 439 #define ISDN_ASYNC_CLOSING        0x08000000 /* Serial port is closing       */
 440 #define ISDN_ASYNC_CTS_FLOW       0x04000000 /* Do CTS flow control          */
 441 #define ISDN_ASYNC_CHECK_CD       0x02000000 /* i.e., CLOCAL                 */
 442 #define ISDN_ASYNC_HUP_NOTIFY         0x0001 /* Notify tty on hangups/closes */
 443 #define ISDN_ASYNC_SESSION_LOCKOUT    0x0100 /* Lock cua opens on session    */
 444 #define ISDN_ASYNC_PGRP_LOCKOUT       0x0200 /* Lock cua opens on pgrp       */
 445 #define ISDN_ASYNC_CALLOUT_NOHUP      0x0400 /* No hangup for cui            */
 446 #define ISDN_ASYNC_SPLIT_TERMIOS      0x0008 /* Sep. termios for dialin/out  */
 447 #define ISDN_SERIAL_XMIT_SIZE           1024 /* Default bufsize for write    */
 448 #define ISDN_SERIAL_XMIT_MAX            4000 /* Maximum bufsize for write    */
 449 #define ISDN_SERIAL_TYPE_NORMAL            1
 450 #define ISDN_SERIAL_TYPE_CALLOUT           2
 451
 452 #ifdef CONFIG_ISDN_AUDIO
 453 /* For using sk_buffs with audio we need some private variables
 454  * within each sk_buff. For this purpose, we declare a struct here,
 455  * and put it always at skb->head. A few macros help accessing the
 456  * variables. Of course, we need to check skb_headroom prior to
 457  * any access.
 458  */
 459 typedef struct isdn_audio_skb {
 460   unsigned short dle_count;
 461   unsigned char  lock;
 462 } isdn_audio_skb;
 463
 464 #define ISDN_AUDIO_SKB_DLECOUNT(skb) (((isdn_audio_skb*)skb->head)->dle_count)
 465 #define ISDN_AUDIO_SKB_LOCK(skb) (((isdn_audio_skb*)skb->head)->lock)
 466 #endif
 467
 468 /* Private data of AT-command-interpreter */
 469 typedef struct atemu {
 470         u_char       profile[ISDN_MODEM_NUMREG]; /* Modem-Regs. Profile 0              */
 471         u_char       mdmreg[ISDN_MODEM_NUMREG];  /* Modem-Registers                    */
 472         char         pmsn[ISDN_MSNLEN];          /* EAZ/MSNs Profile 0                 */
 473         char         msn[ISDN_MSNLEN];           /* EAZ/MSN                            */
 474         char         plmsn[ISDN_LMSNLEN];        /* Listening MSNs Profile 0           */
 475         char         lmsn[ISDN_LMSNLEN];         /* Listening MSNs                     */
 476         char         cpn[ISDN_MSNLEN];           /* CalledPartyNumber on incoming call */
 477         char         connmsg[ISDN_CMSGLEN];      /* CONNECT-Msg from HL-Driver         */
 478 #ifdef CONFIG_ISDN_AUDIO
 479         u_char       vpar[10];                   /* Voice-parameters                   */
 480         int          lastDLE;                    /* Flag for voice-coding: DLE seen    */
 481 #endif
 482         int          mdmcmdl;                    /* Length of Modem-Commandbuffer      */
 483         int          pluscount;                  /* Counter for +++ sequence           */
 484         int          lastplus;                   /* Timestamp of last +                */
 485         int          carrierwait;                /* Seconds of carrier waiting         */
 486         char         mdmcmd[255];                /* Modem-Commandbuffer                */
 487         unsigned int charge;                     /* Charge units of current connection */
 488 } atemu;
 489
 490 /* Private data (similar to async_struct in <linux/serial.h>) */
 491 typedef struct modem_info {
 492   int                   magic;
 493   int                   flags;           /* defined in tty.h               */
 494   int                   x_char;          /* xon/xoff character             */
 495   int                   mcr;             /* Modem control register         */
 496   int                   msr;             /* Modem status register          */
 497   int                   lsr;             /* Line status register           */
 498   int                   line;
 499   int                   count;           /* # of fd on device              */
 500   int                   blocked_open;    /* # of blocked opens             */
 501   long                  session;         /* Session of opening process     */
 502   long                  pgrp;            /* pgrp of opening process        */
 503   int                   online;          /* 1 = B-Channel is up, drop data */
 504                                          /* 2 = B-Channel is up, deliver d.*/
 505   int                   dialing;         /* Dial in progress or ATA        */
 506   int                   rcvsched;        /* Receive needs schedule         */
 507   int                   isdn_driver;     /* Index to isdn-driver           */
 508   int                   isdn_channel;    /* Index to isdn-channel          */
 509   int                   drv_index;       /* Index to dev->usage            */
 510   int                   ncarrier;        /* Flag: schedule NO CARRIER      */
 511   unsigned char         last_cause[8];   /* Last cause message             */
 512   unsigned char         last_num[ISDN_MSNLEN];
 513                                          /* Last phone-number              */
 514   unsigned char         last_l2;         /* Last layer-2 protocol          */
 515   unsigned char         last_si;         /* Last service                   */
 516   unsigned char         last_lhup;       /* Last hangup local?             */
 517   unsigned char         last_dir;        /* Last direction (in or out)     */
 518   struct timer_list     nc_timer;        /* Timer for delayed NO CARRIER   */
 519   int                   send_outstanding;/* # of outstanding send-requests */
 520   int                   xmit_size;       /* max. # of chars in xmit_buf    */
 521   int                   xmit_count;      /* # of chars in xmit_buf         */
 522   unsigned char         *xmit_buf;       /* transmit buffer                */
 523   struct sk_buff_head   xmit_queue;      /* transmit queue                 */
 524   atomic_t              xmit_lock;       /* Semaphore for isdn_tty_write   */
 525 #ifdef CONFIG_ISDN_AUDIO
 526   int                   vonline;         /* Voice-channel status           */
 527                                          /* Bit 0 = recording              */
 528                                          /* Bit 1 = playback               */
 529                                          /* Bit 2 = playback, DLE-ETX seen */
 530   struct sk_buff_head   dtmf_queue;      /* queue for dtmf results         */
 531   void                  *adpcms;         /* state for adpcm decompression  */
 532   void                  *adpcmr;         /* state for adpcm compression    */
 533   void                  *dtmf_state;     /* state for dtmf decoder         */
 534   void                  *silence_state;  /* state for silence detection    */
 535 #endif
 536 #ifdef CONFIG_ISDN_TTY_FAX
 537   struct T30_s          *fax;            /* T30 Fax Group 3 data/interface */
 538   int                   faxonline;       /* Fax-channel status             */
 539 #endif
 540   struct tty_struct     *tty;            /* Pointer to corresponding tty   */
 541   atemu                 emu;             /* AT-emulator data               */
 542   struct termios        normal_termios;  /* For saving termios structs     */
 543   struct termios        callout_termios;
 544   wait_queue_head_t     open_wait, close_wait;
 545   struct semaphore      write_sem;
 546 } modem_info;
 547
 548 #define ISDN_MODEM_WINSIZE 8
 549
 550 /* Description of one ISDN-tty */
 551 typedef struct {
 552   int                refcount;                     /* Number of opens        */
 553   struct tty_driver  tty_modem;                    /* tty-device             */
 554   struct tty_driver  cua_modem;                    /* cua-device             */
 555   struct tty_struct  *modem_table[ISDN_MAX_CHANNELS]; /* ?? copied from Orig */
 556   struct termios     *modem_termios[ISDN_MAX_CHANNELS];
 557   struct termios     *modem_termios_locked[ISDN_MAX_CHANNELS];
 558   modem_info         info[ISDN_MAX_CHANNELS];      /* Private data           */
 559 } modem;
 560
 561 /*======================= End of ISDN-tty stuff ============================*/
 562
 563 /*======================== Start of V.110 stuff ============================*/
 564 #define V110_BUFSIZE 1024
 565
 566 typedef struct {
 567         int nbytes;                    /* 1 Matrixbyte -> nbytes in stream     */
 568         int nbits;                     /* Number of used bits in streambyte    */
 569         unsigned char key;             /* Bitmask in stream eg. 11 (nbits=2)   */
 570         int decodelen;                 /* Amount of data in decodebuf          */
 571         int SyncInit;                  /* Number of sync frames to send        */
 572         unsigned char *OnlineFrame;    /* Precalculated V110 idle frame        */
 573         unsigned char *OfflineFrame;   /* Precalculated V110 sync Frame        */
 574         int framelen;                  /* Length of frames                     */
 575         int skbuser;                   /* Number of unacked userdata skbs      */
 576         int skbidle;                   /* Number of unacked idle/sync skbs     */
 577         int introducer;                /* Local vars for decoder               */
 578         int dbit;
 579         unsigned char b;
 580         int skbres;                    /* space to reserve in outgoing skb     */
 581         int maxsize;                   /* maxbufsize of lowlevel driver        */
 582         unsigned char *encodebuf;      /* temporary buffer for encoding        */
 583         unsigned char decodebuf[V110_BUFSIZE]; /* incomplete V110 matrices     */
 584 } isdn_v110_stream;
 585
 586 /*========================= End of V.110 stuff =============================*/
 587
 588 /*======================= Start of general stuff ===========================*/
 589
 590 typedef struct {
 591         char *next;
 592         char *private;
 593 } infostruct;
 594
 595 typedef struct isdn_module {
 596         struct isdn_module *prev;
 597         struct isdn_module *next;
 598         char *name;
 599         int (*get_free_channel)(int, int, int, int, int);
 600         int (*free_channel)(int, int, int);
 601         int (*status_callback)(isdn_ctrl *);
 602         int (*command)(isdn_ctrl *);
 603         int (*receive_callback)(int, int, struct sk_buff *);
 604         int (*writebuf_skb)(int, int, int, struct sk_buff *);
 605         int (*net_start_xmit)(struct sk_buff *, struct net_device *);
 606         int (*net_receive)(struct net_device *, struct sk_buff *);
 607         int (*net_open)(struct net_device *);
 608         int (*net_close)(struct net_device *);
 609         int priority;
 610 } isdn_module;
 611
 612 #define DRV_FLAG_RUNNING 1
 613 #define DRV_FLAG_REJBUS  2
 614 #define DRV_FLAG_LOADED  4
 615
 616 /* Description of hardware-level-driver */
 617 typedef struct {
 618         ulong               online;           /* Channel-Online flags             */
 619         ulong               flags;            /* Misc driver Flags                */
 620         int                 locks;            /* Number of locks for this driver  */
 621         int                 channels;         /* Number of channels               */
 622         wait_queue_head_t   st_waitq;         /* Wait-Queue for status-read's     */
 623         int                 maxbufsize;       /* Maximum Buffersize supported     */
 624         unsigned long       pktcount;         /* Until now: unused                */
 625         int                 stavail;          /* Chars avail on Status-device     */
 626         isdn_if            *interface;        /* Interface to driver              */
 627         int                *rcverr;           /* Error-counters for B-Ch.-receive */
 628         int                *rcvcount;         /* Byte-counters for B-Ch.-receive  */
 629 #ifdef CONFIG_ISDN_AUDIO
 630         unsigned long      DLEflag;           /* Flags: Insert DLE at next read   */
 631 #endif
 632         struct sk_buff_head *rpqueue;         /* Pointers to start of Rcv-Queue   */
 633         wait_queue_head_t  *rcv_waitq;       /* Wait-Queues for B-Channel-Reads  */
 634         wait_queue_head_t  *snd_waitq;       /* Wait-Queue for B-Channel-Send's  */
 635         char               msn2eaz[10][ISDN_MSNLEN];  /* Mapping-Table MSN->EAZ   */
 636 } driver;
 637
 638 /* Main driver-data */
 639 typedef struct isdn_devt {
 640         unsigned short    flags;                       /* Bitmapped Flags:           */
 641         /*                            */
 642         int               drivers;                     /* Current number of drivers  */
 643         int               channels;                    /* Current number of channels */
 644         int               net_verbose;               /* Verbose-Flag               */
 645         int               modempoll;                   /* Flag: tty-read active      */
 646         int               tflags;                    /* Timer-Flags:               */
 647         /*  see ISDN_TIMER_..defines  */
 648         int               global_flags;
 649         infostruct        *infochain;                /* List of open info-devs.    */
 650         wait_queue_head_t info_waitq;               /* Wait-Queue for isdninfo    */
 651         struct timer_list timer;                       /* Misc.-function Timer       */
 652         int               chanmap[ISDN_MAX_CHANNELS];/* Map minor->device-channel  */
 653         int               drvmap[ISDN_MAX_CHANNELS]; /* Map minor->driver-index    */
 654         int               usage[ISDN_MAX_CHANNELS];  /* Used by tty/ip/voice       */
 655         char              num[ISDN_MAX_CHANNELS][ISDN_MSNLEN];
 656         /* Remote number of active ch.*/
 657         int               m_idx[ISDN_MAX_CHANNELS];  /* Index for mdm....          */
 658         driver            *drv[ISDN_MAX_DRIVERS];    /* Array of drivers           */
 659         isdn_net_dev      *netdev;                     /* Linked list of net-if's    */
 660         char              drvid[ISDN_MAX_DRIVERS][20];/* Driver-ID                 */
 661         struct task_struct *profd;                   /* For iprofd                 */
 662         modem             mdm;                 /* tty-driver-data            */
 663         isdn_net_dev      *rx_netdev[ISDN_MAX_CHANNELS]; /* rx netdev-pointers     */
 664         isdn_net_dev      *st_netdev[ISDN_MAX_CHANNELS]; /* stat netdev-pointers   */
 665         ulong             ibytes[ISDN_MAX_CHANNELS]; /* Statistics incoming bytes  */
 666         ulong             obytes[ISDN_MAX_CHANNELS]; /* Statistics outgoing bytes  */
 667         int               v110emu[ISDN_MAX_CHANNELS];/* V.110 emulator-mode 0=none */
 668         atomic_t          v110use[ISDN_MAX_CHANNELS];/* Usage-Semaphore for stream */
 669         isdn_v110_stream  *v110[ISDN_MAX_CHANNELS];  /* V.110 private data         */
 670         struct semaphore  sem;                       /* serialize list access*/
 671         isdn_module       *modules;
 672         unsigned long     global_features;
 673 #ifdef CONFIG_DEVFS_FS
 674         devfs_handle_t devfs_handle_isdninfo;
 675         devfs_handle_t devfs_handle_isdnctrl;
 676         devfs_handle_t devfs_handle_isdnX[ISDN_MAX_CHANNELS];
 677         devfs_handle_t devfs_handle_isdnctrlX[ISDN_MAX_CHANNELS];
 678 #ifdef CONFIG_ISDN_PPP
 679         devfs_handle_t devfs_handle_ipppX[ISDN_MAX_CHANNELS];
 680 #endif
 681 #endif /* CONFIG_DEVFS_FS */
 682 } isdn_dev;
 683
 684 extern isdn_dev *dev;
 685
 686
 687 /* Utility-Macros */
 688 #define MIN(a,b) ((a<b)?a:b)
 689 #define MAX(a,b) ((a>b)?a:b)
 690 #endif /* __KERNEL__ */
 691 #endif /* isdn_h */