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