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1/* $Id: isdn.h,v 1.125.2.3 2004/02/10 01:07:14 keil 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 software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
11 *
12 */
13
14#ifndef __ISDN_H__
15#define __ISDN_H__
16
17#include <linux/ioctl.h>
18#include <linux/tty.h>
19
20#define ISDN_MAX_DRIVERS 32
21#define ISDN_MAX_CHANNELS 64
22
23/* New ioctl-codes */
24#define IIOCNETAIF _IO('I',1)
25#define IIOCNETDIF _IO('I',2)
26#define IIOCNETSCF _IO('I',3)
27#define IIOCNETGCF _IO('I',4)
28#define IIOCNETANM _IO('I',5)
29#define IIOCNETDNM _IO('I',6)
30#define IIOCNETGNM _IO('I',7)
31#define IIOCGETSET _IO('I',8) /* no longer supported */
32#define IIOCSETSET _IO('I',9) /* no longer supported */
33#define IIOCSETVER _IO('I',10)
34#define IIOCNETHUP _IO('I',11)
35#define IIOCSETGST _IO('I',12)
36#define IIOCSETBRJ _IO('I',13)
37#define IIOCSIGPRF _IO('I',14)
38#define IIOCGETPRF _IO('I',15)
39#define IIOCSETPRF _IO('I',16)
40#define IIOCGETMAP _IO('I',17)
41#define IIOCSETMAP _IO('I',18)
42#define IIOCNETASL _IO('I',19)
43#define IIOCNETDIL _IO('I',20)
44#define IIOCGETCPS _IO('I',21)
45#define IIOCGETDVR _IO('I',22)
46#define IIOCNETLCR _IO('I',23) /* dwabc ioctl for LCR from isdnlog */
47#define IIOCNETDWRSET _IO('I',24) /* dwabc ioctl to reset abc-values to default on a net-interface */
48
49#define IIOCNETALN _IO('I',32)
50#define IIOCNETDLN _IO('I',33)
51
52#define IIOCNETGPN _IO('I',34)
53
54#define IIOCDBGVAR _IO('I',127)
55
56#define IIOCDRVCTL _IO('I',128)
57
58/* cisco hdlck device private ioctls */
59#define SIOCGKEEPPERIOD (SIOCDEVPRIVATE + 0)
60#define SIOCSKEEPPERIOD (SIOCDEVPRIVATE + 1)
61#define SIOCGDEBSERINT (SIOCDEVPRIVATE + 2)
62#define SIOCSDEBSERINT (SIOCDEVPRIVATE + 3)
63
64/* Packet encapsulations for net-interfaces */
65#define ISDN_NET_ENCAP_ETHER 0
66#define ISDN_NET_ENCAP_RAWIP 1
67#define ISDN_NET_ENCAP_IPTYP 2
68#define ISDN_NET_ENCAP_CISCOHDLC 3 /* Without SLARP and keepalive */
69#define ISDN_NET_ENCAP_SYNCPPP 4
70#define ISDN_NET_ENCAP_UIHDLC 5
71#define ISDN_NET_ENCAP_CISCOHDLCK 6 /* With SLARP and keepalive */
72#define ISDN_NET_ENCAP_X25IFACE 7 /* Documentation/networking/x25-iface.txt */
73#define ISDN_NET_ENCAP_MAX_ENCAP ISDN_NET_ENCAP_X25IFACE
74
75/* Facility which currently uses an ISDN-channel */
76#define ISDN_USAGE_NONE 0
77#define ISDN_USAGE_RAW 1
78#define ISDN_USAGE_MODEM 2
79#define ISDN_USAGE_NET 3
80#define ISDN_USAGE_VOICE 4
81#define ISDN_USAGE_FAX 5
82#define ISDN_USAGE_MASK 7 /* Mask to get plain usage */
83#define ISDN_USAGE_DISABLED 32 /* This bit is set, if channel is disabled */
84#define ISDN_USAGE_EXCLUSIVE 64 /* This bit is set, if channel is exclusive */
85#define ISDN_USAGE_OUTGOING 128 /* This bit is set, if channel is outgoing */
86
87#define ISDN_MODEM_NUMREG 24 /* Number of Modem-Registers */
88#define ISDN_LMSNLEN 255 /* Length of tty's Listen-MSN string */
89#define ISDN_CMSGLEN 50 /* Length of CONNECT-Message to add for Modem */
90
91#define ISDN_MSNLEN 32
92#define NET_DV 0x06 /* Data version for isdn_net_ioctl_cfg */
93#define TTY_DV 0x06 /* Data version for iprofd etc. */
94
95#define INF_DV 0x01 /* Data version for /dev/isdninfo */
96
97typedef struct {
98 char drvid[25];
99 unsigned long arg;
100} isdn_ioctl_struct;
101
102typedef struct {
103 char name[10];
104 char phone[ISDN_MSNLEN];
105 int outgoing;
106} isdn_net_ioctl_phone;
107
108typedef struct {
109 char name[10]; /* Name of interface */
110 char master[10]; /* Name of Master for Bundling */
111 char slave[10]; /* Name of Slave for Bundling */
112 char eaz[256]; /* EAZ/MSN */
113 char drvid[25]; /* DriverId for Bindings */
114 int onhtime; /* Hangup-Timeout */
115 int charge; /* Charge-Units */
116 int l2_proto; /* Layer-2 protocol */
117 int l3_proto; /* Layer-3 protocol */
118 int p_encap; /* Encapsulation */
119 int exclusive; /* Channel, if bound exclusive */
120 int dialmax; /* Dial Retry-Counter */
121 int slavedelay; /* Delay until slave starts up */
122 int cbdelay; /* Delay before Callback */
123 int chargehup; /* Flag: Charge-Hangup */
124 int ihup; /* Flag: Hangup-Timeout on incoming line */
125 int secure; /* Flag: Secure */
126 int callback; /* Flag: Callback */
127 int cbhup; /* Flag: Reject Call before Callback */
128 int pppbind; /* ippp device for bindings */
129 int chargeint; /* Use fixed charge interval length */
130 int triggercps; /* BogoCPS needed for triggering slave */
131 int dialtimeout; /* Dial-Timeout */
132 int dialwait; /* Time to wait after failed dial */
133 int dialmode; /* Flag: off / on / auto */
134} isdn_net_ioctl_cfg;
135
136#define ISDN_NET_DIALMODE_MASK 0xC0 /* bits for status */
137#define ISDN_NET_DM_OFF 0x00 /* this interface is stopped */
138#define ISDN_NET_DM_MANUAL 0x40 /* this interface is on (manual) */
139#define ISDN_NET_DM_AUTO 0x80 /* this interface is autodial */
140#define ISDN_NET_DIALMODE(x) ((&(x))->flags & ISDN_NET_DIALMODE_MASK)
141
142#ifdef __KERNEL__
143
144#include <linux/errno.h>
145#include <linux/fs.h>
146#include <linux/major.h>
147#include <asm/io.h>
148#include <linux/kernel.h>
149#include <linux/signal.h>
150#include <linux/slab.h>
151#include <linux/timer.h>
152#include <linux/wait.h>
153#include <linux/tty.h>
154#include <linux/tty_flip.h>
155#include <linux/serial_reg.h>
156#include <linux/fcntl.h>
157#include <linux/types.h>
158#include <linux/interrupt.h>
159#include <linux/ip.h>
160#include <linux/in.h>
161#include <linux/netdevice.h>
162#include <linux/etherdevice.h>
163#include <linux/skbuff.h>
164#include <linux/tcp.h>
165#include <linux/mutex.h>
166
167#define ISDN_TTY_MAJOR 43
168#define ISDN_TTYAUX_MAJOR 44
169#define ISDN_MAJOR 45
170
171/* The minor-devicenumbers for Channel 0 and 1 are used as arguments for
172 * physical Channel-Mapping, so they MUST NOT be changed without changing
173 * the correspondent code in isdn.c
174 */
175
176#define ISDN_MINOR_B 0
177#define ISDN_MINOR_BMAX (ISDN_MAX_CHANNELS-1)
178#define ISDN_MINOR_CTRL 64
179#define ISDN_MINOR_CTRLMAX (64 + (ISDN_MAX_CHANNELS-1))
180#define ISDN_MINOR_PPP 128
181#define ISDN_MINOR_PPPMAX (128 + (ISDN_MAX_CHANNELS-1))
182#define ISDN_MINOR_STATUS 255
183
184#ifdef CONFIG_ISDN_PPP
185
186#ifdef CONFIG_ISDN_PPP_VJ
187# include <net/slhc_vj.h>
188#endif
189
190#include <linux/ppp_defs.h>
191#include <linux/ppp-ioctl.h>
192
193#include <linux/isdn_ppp.h>
194#endif
195
196#ifdef CONFIG_ISDN_X25
197# include <linux/concap.h>
198#endif
199
200#include <linux/isdnif.h>
201
202#define ISDN_DRVIOCTL_MASK 0x7f /* Mask for Device-ioctl */
203
204/* Until now unused */
205#define ISDN_SERVICE_VOICE 1
206#define ISDN_SERVICE_AB 1<<1
207#define ISDN_SERVICE_X21 1<<2
208#define ISDN_SERVICE_G4 1<<3
209#define ISDN_SERVICE_BTX 1<<4
210#define ISDN_SERVICE_DFUE 1<<5
211#define ISDN_SERVICE_X25 1<<6
212#define ISDN_SERVICE_TTX 1<<7
213#define ISDN_SERVICE_MIXED 1<<8
214#define ISDN_SERVICE_FW 1<<9
215#define ISDN_SERVICE_GTEL 1<<10
216#define ISDN_SERVICE_BTXN 1<<11
217#define ISDN_SERVICE_BTEL 1<<12
218
219/* Macros checking plain usage */
220#define USG_NONE(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NONE)
221#define USG_RAW(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_RAW)
222#define USG_MODEM(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM)
223#define USG_VOICE(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)
224#define USG_NET(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NET)
225#define USG_FAX(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_FAX)
226#define USG_OUTGOING(x) ((x & ISDN_USAGE_OUTGOING)==ISDN_USAGE_OUTGOING)
227#define USG_MODEMORVOICE(x) (((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM) || \
228 ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE) )
229
230/* Timer-delays and scheduling-flags */
231#define ISDN_TIMER_RES 4 /* Main Timer-Resolution */
232#define ISDN_TIMER_02SEC (HZ/ISDN_TIMER_RES/5) /* Slow-Timer1 .2 sec */
233#define ISDN_TIMER_1SEC (HZ/ISDN_TIMER_RES) /* Slow-Timer2 1 sec */
234#define ISDN_TIMER_RINGING 5 /* tty RINGs = ISDN_TIMER_1SEC * this factor */
235#define ISDN_TIMER_KEEPINT 10 /* Cisco-Keepalive = ISDN_TIMER_1SEC * this factor */
236#define ISDN_TIMER_MODEMREAD 1
237#define ISDN_TIMER_MODEMPLUS 2
238#define ISDN_TIMER_MODEMRING 4
239#define ISDN_TIMER_MODEMXMIT 8
240#define ISDN_TIMER_NETDIAL 16
241#define ISDN_TIMER_NETHANGUP 32
242#define ISDN_TIMER_CARRIER 256 /* Wait for Carrier */
243#define ISDN_TIMER_FAST (ISDN_TIMER_MODEMREAD | ISDN_TIMER_MODEMPLUS | \
244 ISDN_TIMER_MODEMXMIT)
245#define ISDN_TIMER_SLOW (ISDN_TIMER_MODEMRING | ISDN_TIMER_NETHANGUP | \
246 ISDN_TIMER_NETDIAL | ISDN_TIMER_CARRIER)
247
248/* Timeout-Values for isdn_net_dial() */
249#define ISDN_TIMER_DTIMEOUT10 (10*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
250#define ISDN_TIMER_DTIMEOUT15 (15*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
251#define ISDN_TIMER_DTIMEOUT60 (60*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
252
253/* GLOBAL_FLAGS */
254#define ISDN_GLOBAL_STOPPED 1
255
256/*=================== Start of ip-over-ISDN stuff =========================*/
257
258/* Feature- and status-flags for a net-interface */
259#define ISDN_NET_CONNECTED 0x01 /* Bound to ISDN-Channel */
260#define ISDN_NET_SECURE 0x02 /* Accept calls from phonelist only */
261#define ISDN_NET_CALLBACK 0x04 /* activate callback */
262#define ISDN_NET_CBHUP 0x08 /* hangup before callback */
263#define ISDN_NET_CBOUT 0x10 /* remote machine does callback */
264
265#define ISDN_NET_MAGIC 0x49344C02 /* for paranoia-checking */
266
267/* Phone-list-element */
268typedef struct {
269 void *next;
270 char num[ISDN_MSNLEN];
271} isdn_net_phone;
272
273/*
274 Principles when extending structures for generic encapsulation protocol
275 ("concap") support:
276 - Stuff which is hardware specific (here i4l-specific) goes in
277 the netdev -> local structure (here: isdn_net_local)
278 - Stuff which is encapsulation protocol specific goes in the structure
279 which holds the linux device structure (here: isdn_net_device)
280*/
281
282/* Local interface-data */
283typedef struct isdn_net_local_s {
284 ulong magic;
285 struct net_device_stats stats; /* Ethernet Statistics */
286 int isdn_device; /* Index to isdn-device */
287 int isdn_channel; /* Index to isdn-channel */
288 int ppp_slot; /* PPPD device slot number */
289 int pre_device; /* Preselected isdn-device */
290 int pre_channel; /* Preselected isdn-channel */
291 int exclusive; /* If non-zero idx to reserved chan.*/
292 int flags; /* Connection-flags */
293 int dialretry; /* Counter for Dialout-retries */
294 int dialmax; /* Max. Number of Dial-retries */
295 int cbdelay; /* Delay before Callback starts */
296 int dtimer; /* Timeout-counter for dialing */
297 char msn[ISDN_MSNLEN]; /* MSNs/EAZs for this interface */
298 u_char cbhup; /* Flag: Reject Call before Callback*/
299 u_char dialstate; /* State for dialing */
300 u_char p_encap; /* Packet encapsulation */
301 /* 0 = Ethernet over ISDN */
302 /* 1 = RAW-IP */
303 /* 2 = IP with type field */
304 u_char l2_proto; /* Layer-2-protocol */
305 /* See ISDN_PROTO_L2..-constants in */
306 /* isdnif.h */
307 /* 0 = X75/LAPB with I-Frames */
308 /* 1 = X75/LAPB with UI-Frames */
309 /* 2 = X75/LAPB with BUI-Frames */
310 /* 3 = HDLC */
311 u_char l3_proto; /* Layer-3-protocol */
312 /* See ISDN_PROTO_L3..-constants in */
313 /* isdnif.h */
314 /* 0 = Transparent */
315 int huptimer; /* Timeout-counter for auto-hangup */
316 int charge; /* Counter for charging units */
317 ulong chargetime; /* Timer for Charging info */
318 int hupflags; /* Flags for charge-unit-hangup: */
319 /* bit0: chargeint is invalid */
320 /* bit1: Getting charge-interval */
321 /* bit2: Do charge-unit-hangup */
322 /* bit3: Do hangup even on incoming */
323 int outgoing; /* Flag: outgoing call */
324 int onhtime; /* Time to keep link up */
325 int chargeint; /* Interval between charge-infos */
326 int onum; /* Flag: at least 1 outgoing number */
327 int cps; /* current speed of this interface */
328 int transcount; /* byte-counter for cps-calculation */
329 int sqfull; /* Flag: netdev-queue overloaded */
330 ulong sqfull_stamp; /* Start-Time of overload */
331 ulong slavedelay; /* Dynamic bundling delaytime */
332 int triggercps; /* BogoCPS needed for trigger slave */
333 isdn_net_phone *phone[2]; /* List of remote-phonenumbers */
334 /* phone[0] = Incoming Numbers */
335 /* phone[1] = Outgoing Numbers */
336 isdn_net_phone *dial; /* Pointer to dialed number */
337 struct net_device *master; /* Ptr to Master device for slaves */
338 struct net_device *slave; /* Ptr to Slave device for masters */
339 struct isdn_net_local_s *next; /* Ptr to next link in bundle */
340 struct isdn_net_local_s *last; /* Ptr to last link in bundle */
341 struct isdn_net_dev_s *netdev; /* Ptr to netdev */
342 struct sk_buff_head super_tx_queue; /* List of supervisory frames to */
343 /* be transmitted asap */
344 atomic_t frame_cnt; /* number of frames currently */
345 /* queued in HL driver */
346 /* Ptr to orig. hard_header_cache */
347 spinlock_t xmit_lock; /* used to protect the xmit path of */
348 /* a particular channel (including */
349 /* the frame_cnt */
350
351 int pppbind; /* ippp device for bindings */
352 int dialtimeout; /* How long shall we try on dialing? (jiffies) */
353 int dialwait; /* How long shall we wait after failed attempt? (jiffies) */
354 ulong dialstarted; /* jiffies of first dialing-attempt */
355 ulong dialwait_timer; /* jiffies of earliest next dialing-attempt */
356 int huptimeout; /* How long will the connection be up? (seconds) */
357#ifdef CONFIG_ISDN_X25
358 struct concap_device_ops *dops; /* callbacks used by encapsulator */
359#endif
360 /* use an own struct for that in later versions */
361 ulong cisco_myseq; /* Local keepalive seq. for Cisco */
362 ulong cisco_mineseen; /* returned keepalive seq. from remote */
363 ulong cisco_yourseq; /* Remote keepalive seq. for Cisco */
364 int cisco_keepalive_period; /* keepalive period */
365 ulong cisco_last_slarp_in; /* jiffie of last keepalive packet we received */
366 char cisco_line_state; /* state of line according to keepalive packets */
367 char cisco_debserint; /* debugging flag of cisco hdlc with slarp */
368 struct timer_list cisco_timer;
369 struct work_struct tqueue;
370} isdn_net_local;
371
372/* the interface itself */
373typedef struct isdn_net_dev_s {
374 isdn_net_local *local;
375 isdn_net_local *queue; /* circular list of all bundled
376 channels, which are currently
377 online */
378 spinlock_t queue_lock; /* lock to protect queue */
379 void *next; /* Pointer to next isdn-interface */
380 struct net_device *dev; /* interface to upper levels */
381#ifdef CONFIG_ISDN_PPP
382 ippp_bundle * pb; /* pointer to the common bundle structure
383 * with the per-bundle data */
384#endif
385#ifdef CONFIG_ISDN_X25
386 struct concap_proto *cprot; /* connection oriented encapsulation protocol */
387#endif
388
389} isdn_net_dev;
390
391/*===================== End of ip-over-ISDN stuff ===========================*/
392
393/*======================= Start of ISDN-tty stuff ===========================*/
394
395#define ISDN_ASYNC_MAGIC 0x49344C01 /* for paranoia-checking */
396#define ISDN_SERIAL_XMIT_SIZE 1024 /* Default bufsize for write */
397#define ISDN_SERIAL_XMIT_MAX 4000 /* Maximum bufsize for write */
398
399#ifdef CONFIG_ISDN_AUDIO
400/* For using sk_buffs with audio we need some private variables
401 * within each sk_buff. For this purpose, we declare a struct here,
402 * and put it always at the private skb->cb data array. A few macros help
403 * accessing the variables.
404 */
405typedef struct _isdn_audio_data {
406 unsigned short dle_count;
407 unsigned char lock;
408} isdn_audio_data_t;
409
410#define ISDN_AUDIO_SKB_DLECOUNT(skb) (((isdn_audio_data_t *)&skb->cb[0])->dle_count)
411#define ISDN_AUDIO_SKB_LOCK(skb) (((isdn_audio_data_t *)&skb->cb[0])->lock)
412#endif
413
414/* Private data of AT-command-interpreter */
415typedef struct atemu {
416 u_char profile[ISDN_MODEM_NUMREG]; /* Modem-Regs. Profile 0 */
417 u_char mdmreg[ISDN_MODEM_NUMREG]; /* Modem-Registers */
418 char pmsn[ISDN_MSNLEN]; /* EAZ/MSNs Profile 0 */
419 char msn[ISDN_MSNLEN]; /* EAZ/MSN */
420 char plmsn[ISDN_LMSNLEN]; /* Listening MSNs Profile 0 */
421 char lmsn[ISDN_LMSNLEN]; /* Listening MSNs */
422 char cpn[ISDN_MSNLEN]; /* CalledPartyNumber on incoming call */
423 char connmsg[ISDN_CMSGLEN]; /* CONNECT-Msg from HL-Driver */
424#ifdef CONFIG_ISDN_AUDIO
425 u_char vpar[10]; /* Voice-parameters */
426 int lastDLE; /* Flag for voice-coding: DLE seen */
427#endif
428 int mdmcmdl; /* Length of Modem-Commandbuffer */
429 int pluscount; /* Counter for +++ sequence */
430 u_long lastplus; /* Timestamp of last + */
431 int carrierwait; /* Seconds of carrier waiting */
432 char mdmcmd[255]; /* Modem-Commandbuffer */
433 unsigned int charge; /* Charge units of current connection */
434} atemu;
435
436/* Private data (similar to async_struct in <linux/serial.h>) */
437typedef struct modem_info {
438 int magic;
439 struct tty_port port;
440 int x_char; /* xon/xoff character */
441 int mcr; /* Modem control register */
442 int msr; /* Modem status register */
443 int lsr; /* Line status register */
444 int line;
445 int online; /* 1 = B-Channel is up, drop data */
446 /* 2 = B-Channel is up, deliver d.*/
447 int dialing; /* Dial in progress or ATA */
448 int rcvsched; /* Receive needs schedule */
449 int isdn_driver; /* Index to isdn-driver */
450 int isdn_channel; /* Index to isdn-channel */
451 int drv_index; /* Index to dev->usage */
452 int ncarrier; /* Flag: schedule NO CARRIER */
453 unsigned char last_cause[8]; /* Last cause message */
454 unsigned char last_num[ISDN_MSNLEN];
455 /* Last phone-number */
456 unsigned char last_l2; /* Last layer-2 protocol */
457 unsigned char last_si; /* Last service */
458 unsigned char last_lhup; /* Last hangup local? */
459 unsigned char last_dir; /* Last direction (in or out) */
460 struct timer_list nc_timer; /* Timer for delayed NO CARRIER */
461 int send_outstanding;/* # of outstanding send-requests */
462 int xmit_size; /* max. # of chars in xmit_buf */
463 int xmit_count; /* # of chars in xmit_buf */
464 struct sk_buff_head xmit_queue; /* transmit queue */
465 atomic_t xmit_lock; /* Semaphore for isdn_tty_write */
466#ifdef CONFIG_ISDN_AUDIO
467 int vonline; /* Voice-channel status */
468 /* Bit 0 = recording */
469 /* Bit 1 = playback */
470 /* Bit 2 = playback, DLE-ETX seen */
471 struct sk_buff_head dtmf_queue; /* queue for dtmf results */
472 void *adpcms; /* state for adpcm decompression */
473 void *adpcmr; /* state for adpcm compression */
474 void *dtmf_state; /* state for dtmf decoder */
475 void *silence_state; /* state for silence detection */
476#endif
477#ifdef CONFIG_ISDN_TTY_FAX
478 struct T30_s *fax; /* T30 Fax Group 3 data/interface */
479 int faxonline; /* Fax-channel status */
480#endif
481 atemu emu; /* AT-emulator data */
482 spinlock_t readlock;
483} modem_info;
484
485#define ISDN_MODEM_WINSIZE 8
486
487/* Description of one ISDN-tty */
488typedef struct _isdn_modem {
489 int refcount; /* Number of opens */
490 struct tty_driver *tty_modem; /* tty-device */
491 struct tty_struct *modem_table[ISDN_MAX_CHANNELS]; /* ?? copied from Orig */
492 struct ktermios *modem_termios[ISDN_MAX_CHANNELS];
493 struct ktermios *modem_termios_locked[ISDN_MAX_CHANNELS];
494 modem_info info[ISDN_MAX_CHANNELS]; /* Private data */
495} isdn_modem_t;
496
497/*======================= End of ISDN-tty stuff ============================*/
498
499/*======================== Start of V.110 stuff ============================*/
500#define V110_BUFSIZE 1024
501
502typedef struct {
503 int nbytes; /* 1 Matrixbyte -> nbytes in stream */
504 int nbits; /* Number of used bits in streambyte */
505 unsigned char key; /* Bitmask in stream eg. 11 (nbits=2) */
506 int decodelen; /* Amount of data in decodebuf */
507 int SyncInit; /* Number of sync frames to send */
508 unsigned char *OnlineFrame; /* Precalculated V110 idle frame */
509 unsigned char *OfflineFrame; /* Precalculated V110 sync Frame */
510 int framelen; /* Length of frames */
511 int skbuser; /* Number of unacked userdata skbs */
512 int skbidle; /* Number of unacked idle/sync skbs */
513 int introducer; /* Local vars for decoder */
514 int dbit;
515 unsigned char b;
516 int skbres; /* space to reserve in outgoing skb */
517 int maxsize; /* maxbufsize of lowlevel driver */
518 unsigned char *encodebuf; /* temporary buffer for encoding */
519 unsigned char decodebuf[V110_BUFSIZE]; /* incomplete V110 matrices */
520} isdn_v110_stream;
521
522/*========================= End of V.110 stuff =============================*/
523
524/*======================= Start of general stuff ===========================*/
525
526typedef struct {
527 char *next;
528 char *private;
529} infostruct;
530
531#define DRV_FLAG_RUNNING 1
532#define DRV_FLAG_REJBUS 2
533#define DRV_FLAG_LOADED 4
534
535/* Description of hardware-level-driver */
536typedef struct _isdn_driver {
537 ulong online; /* Channel-Online flags */
538 ulong flags; /* Misc driver Flags */
539 int locks; /* Number of locks for this driver */
540 int channels; /* Number of channels */
541 wait_queue_head_t st_waitq; /* Wait-Queue for status-read's */
542 int maxbufsize; /* Maximum Buffersize supported */
543 unsigned long pktcount; /* Until now: unused */
544 int stavail; /* Chars avail on Status-device */
545 isdn_if *interface; /* Interface to driver */
546 int *rcverr; /* Error-counters for B-Ch.-receive */
547 int *rcvcount; /* Byte-counters for B-Ch.-receive */
548#ifdef CONFIG_ISDN_AUDIO
549 unsigned long DLEflag; /* Flags: Insert DLE at next read */
550#endif
551 struct sk_buff_head *rpqueue; /* Pointers to start of Rcv-Queue */
552 wait_queue_head_t *rcv_waitq; /* Wait-Queues for B-Channel-Reads */
553 wait_queue_head_t *snd_waitq; /* Wait-Queue for B-Channel-Send's */
554 char msn2eaz[10][ISDN_MSNLEN]; /* Mapping-Table MSN->EAZ */
555} isdn_driver_t;
556
557/* Main driver-data */
558typedef struct isdn_devt {
559 struct module *owner;
560 spinlock_t lock;
561 unsigned short flags; /* Bitmapped Flags: */
562 int drivers; /* Current number of drivers */
563 int channels; /* Current number of channels */
564 int net_verbose; /* Verbose-Flag */
565 int modempoll; /* Flag: tty-read active */
566 spinlock_t timerlock;
567 int tflags; /* Timer-Flags: */
568 /* see ISDN_TIMER_..defines */
569 int global_flags;
570 infostruct *infochain; /* List of open info-devs. */
571 wait_queue_head_t info_waitq; /* Wait-Queue for isdninfo */
572 struct timer_list timer; /* Misc.-function Timer */
573 int chanmap[ISDN_MAX_CHANNELS]; /* Map minor->device-channel */
574 int drvmap[ISDN_MAX_CHANNELS]; /* Map minor->driver-index */
575 int usage[ISDN_MAX_CHANNELS]; /* Used by tty/ip/voice */
576 char num[ISDN_MAX_CHANNELS][ISDN_MSNLEN];
577 /* Remote number of active ch.*/
578 int m_idx[ISDN_MAX_CHANNELS]; /* Index for mdm.... */
579 isdn_driver_t *drv[ISDN_MAX_DRIVERS]; /* Array of drivers */
580 isdn_net_dev *netdev; /* Linked list of net-if's */
581 char drvid[ISDN_MAX_DRIVERS][20];/* Driver-ID */
582 struct task_struct *profd; /* For iprofd */
583 isdn_modem_t mdm; /* tty-driver-data */
584 isdn_net_dev *rx_netdev[ISDN_MAX_CHANNELS]; /* rx netdev-pointers */
585 isdn_net_dev *st_netdev[ISDN_MAX_CHANNELS]; /* stat netdev-pointers */
586 ulong ibytes[ISDN_MAX_CHANNELS]; /* Statistics incoming bytes */
587 ulong obytes[ISDN_MAX_CHANNELS]; /* Statistics outgoing bytes */
588 int v110emu[ISDN_MAX_CHANNELS]; /* V.110 emulator-mode 0=none */
589 atomic_t v110use[ISDN_MAX_CHANNELS]; /* Usage-Semaphore for stream */
590 isdn_v110_stream *v110[ISDN_MAX_CHANNELS]; /* V.110 private data */
591 struct mutex mtx; /* serialize list access*/
592 unsigned long global_features;
593} isdn_dev;
594
595extern isdn_dev *dev;
596
597
598#endif /* __KERNEL__ */
599
600#endif /* __ISDN_H__ */