1 /* $Id: isdn_common.c,v 1.1.2.3 2004/02/10 01:07:13 keil Exp $
3 * Linux ISDN subsystem, common used functions (linklevel).
5 * Copyright 1994-1999 by Fritz Elfert (fritz@isdn4linux.de)
6 * Copyright 1995,96 Thinking Objects Software GmbH Wuerzburg
7 * Copyright 1995,96 by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de)
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
14 #include <linux/module.h>
15 #include <linux/init.h>
16 #include <linux/poll.h>
17 #include <linux/vmalloc.h>
18 #include <linux/isdn.h>
19 #include <linux/smp_lock.h>
20 #include "isdn_common.h"
24 #ifdef CONFIG_ISDN_AUDIO
25 #include "isdn_audio.h"
27 #ifdef CONFIG_ISDN_DIVERSION_MODULE
28 #define CONFIG_ISDN_DIVERSION
30 #ifdef CONFIG_ISDN_DIVERSION
31 #include <linux/isdn_divertif.h>
32 #endif /* CONFIG_ISDN_DIVERSION */
33 #include "isdn_v110.h"
36 #undef ISDN_DEBUG_STATCALLB
38 MODULE_DESCRIPTION("ISDN4Linux: link layer");
39 MODULE_AUTHOR("Fritz Elfert");
40 MODULE_LICENSE("GPL");
44 static char *isdn_revision = "$Revision: 1.1.2.3 $";
46 extern char *isdn_net_revision;
47 extern char *isdn_tty_revision;
48 #ifdef CONFIG_ISDN_PPP
49 extern char *isdn_ppp_revision;
51 static char *isdn_ppp_revision = ": none $";
53 #ifdef CONFIG_ISDN_AUDIO
54 extern char *isdn_audio_revision;
56 static char *isdn_audio_revision = ": none $";
58 extern char *isdn_v110_revision;
60 #ifdef CONFIG_ISDN_DIVERSION
61 static isdn_divert_if *divert_if; /* = NULL */
62 #endif /* CONFIG_ISDN_DIVERSION */
65 static int isdn_writebuf_stub(int, int, const u_char __user *, int);
66 static void set_global_features(void);
67 static int isdn_wildmat(char *s, char *p);
68 static int isdn_add_channels(isdn_driver_t *d, int drvidx, int n, int adding);
71 isdn_lock_driver(isdn_driver_t *drv)
73 try_module_get(drv->interface->owner);
78 isdn_lock_drivers(void)
82 for (i = 0; i < ISDN_MAX_DRIVERS; i++) {
85 isdn_lock_driver(dev->drv[i]);
90 isdn_unlock_driver(isdn_driver_t *drv)
94 module_put(drv->interface->owner);
99 isdn_unlock_drivers(void)
103 for (i = 0; i < ISDN_MAX_DRIVERS; i++) {
106 isdn_unlock_driver(dev->drv[i]);
110 #if defined(ISDN_DEBUG_NET_DUMP) || defined(ISDN_DEBUG_MODEM_DUMP)
112 isdn_dumppkt(char *s, u_char * p, int len, int dumplen)
116 printk(KERN_DEBUG "%s(%d) ", s, len);
117 for (dumpc = 0; (dumpc < dumplen) && (len); len--, dumpc++)
118 printk(" %02x", *p++);
124 * I picked the pattern-matching-functions from an old GNU-tar version (1.10)
125 * It was originally written and put to PD by rs@mirror.TMC.COM (Rich Salz)
128 isdn_star(char *s, char *p)
130 while (isdn_wildmat(s, p)) {
138 * Shell-type Pattern-matching for incoming caller-Ids
139 * This function gets a string in s and checks, if it matches the pattern
145 * 2 = no match. Would eventually match, if s would be longer.
149 * '?' matches one character
150 * '*' matches zero or more characters
151 * [xyz] matches the set of characters in brackets.
152 * [^xyz] matches any single character not in the set of characters
156 isdn_wildmat(char *s, char *p)
159 register int matched;
160 register int reverse;
161 register int nostar = 1;
169 * Literal match with following character,
175 return (*s == '\0')?2:1;
178 /* Match anything. */
184 /* Trailing star matches everything. */
185 return (*++p ? isdn_star(s, p) : 0);
187 /* [^....] means inverse character class. */
188 if ((reverse = (p[1] == '^')))
190 for (last = 0, matched = 0; *++p && (*p != ']'); last = *p)
191 /* This next line requires a good C compiler. */
192 if (*p == '-' ? *s <= *++p && *s >= last : *s == *p)
194 if (matched == reverse)
198 return (*s == '\0')?0:nostar;
201 int isdn_msncmp( const char * msn1, const char * msn2 )
203 char TmpMsn1[ ISDN_MSNLEN ];
204 char TmpMsn2[ ISDN_MSNLEN ];
207 for ( p = TmpMsn1; *msn1 && *msn1 != ':'; ) // Strip off a SPID
211 for ( p = TmpMsn2; *msn2 && *msn2 != ':'; ) // Strip off a SPID
215 return isdn_wildmat( TmpMsn1, TmpMsn2 );
219 isdn_dc2minor(int di, int ch)
222 for (i = 0; i < ISDN_MAX_CHANNELS; i++)
223 if (dev->chanmap[i] == ch && dev->drvmap[i] == di)
228 static int isdn_timer_cnt1 = 0;
229 static int isdn_timer_cnt2 = 0;
230 static int isdn_timer_cnt3 = 0;
233 isdn_timer_funct(ulong dummy)
235 int tf = dev->tflags;
236 if (tf & ISDN_TIMER_FAST) {
237 if (tf & ISDN_TIMER_MODEMREAD)
238 isdn_tty_readmodem();
239 if (tf & ISDN_TIMER_MODEMPLUS)
240 isdn_tty_modem_escape();
241 if (tf & ISDN_TIMER_MODEMXMIT)
242 isdn_tty_modem_xmit();
244 if (tf & ISDN_TIMER_SLOW) {
245 if (++isdn_timer_cnt1 >= ISDN_TIMER_02SEC) {
247 if (tf & ISDN_TIMER_NETDIAL)
250 if (++isdn_timer_cnt2 >= ISDN_TIMER_1SEC) {
252 if (tf & ISDN_TIMER_NETHANGUP)
254 if (++isdn_timer_cnt3 >= ISDN_TIMER_RINGING) {
256 if (tf & ISDN_TIMER_MODEMRING)
257 isdn_tty_modem_ring();
259 if (tf & ISDN_TIMER_CARRIER)
260 isdn_tty_carrier_timeout();
264 mod_timer(&dev->timer, jiffies+ISDN_TIMER_RES);
268 isdn_timer_ctrl(int tf, int onoff)
273 spin_lock_irqsave(&dev->timerlock, flags);
274 if ((tf & ISDN_TIMER_SLOW) && (!(dev->tflags & ISDN_TIMER_SLOW))) {
275 /* If the slow-timer wasn't activated until now */
279 old_tflags = dev->tflags;
284 if (dev->tflags && !old_tflags)
285 mod_timer(&dev->timer, jiffies+ISDN_TIMER_RES);
286 spin_unlock_irqrestore(&dev->timerlock, flags);
290 * Receive a packet from B-Channel. (Called from low-level-module)
293 isdn_receive_skb_callback(int di, int channel, struct sk_buff *skb)
297 if ((i = isdn_dc2minor(di, channel)) == -1) {
301 /* Update statistics */
302 dev->ibytes[i] += skb->len;
304 /* First, try to deliver data to network-device */
305 if (isdn_net_rcv_skb(i, skb))
309 * makes sense for async streams only, so it is
310 * called after possible net-device delivery.
313 atomic_inc(&dev->v110use[i]);
314 skb = isdn_v110_decode(dev->v110[i], skb);
315 atomic_dec(&dev->v110use[i]);
320 /* No network-device found, deliver to tty or raw-channel */
322 if (isdn_tty_rcv_skb(i, di, channel, skb))
324 wake_up_interruptible(&dev->drv[di]->rcv_waitq[channel]);
330 * Intercept command from Linklevel to Lowlevel.
331 * If layer 2 protocol is V.110 and this is not supported by current
332 * lowlevel-driver, use driver's transparent mode and handle V.110 in
336 isdn_command(isdn_ctrl *cmd)
338 if (cmd->driver == -1) {
339 printk(KERN_WARNING "isdn_command command(%x) driver -1\n", cmd->command);
342 if (!dev->drv[cmd->driver]) {
343 printk(KERN_WARNING "isdn_command command(%x) dev->drv[%d] NULL\n",
344 cmd->command, cmd->driver);
347 if (!dev->drv[cmd->driver]->interface) {
348 printk(KERN_WARNING "isdn_command command(%x) dev->drv[%d]->interface NULL\n",
349 cmd->command, cmd->driver);
352 if (cmd->command == ISDN_CMD_SETL2) {
353 int idx = isdn_dc2minor(cmd->driver, cmd->arg & 255);
354 unsigned long l2prot = (cmd->arg >> 8) & 255;
355 unsigned long features = (dev->drv[cmd->driver]->interface->features
356 >> ISDN_FEATURE_L2_SHIFT) &
357 ISDN_FEATURE_L2_MASK;
358 unsigned long l2_feature = (1 << l2prot);
361 case ISDN_PROTO_L2_V11096:
362 case ISDN_PROTO_L2_V11019:
363 case ISDN_PROTO_L2_V11038:
364 /* If V.110 requested, but not supported by
365 * HL-driver, set emulator-flag and change
366 * Layer-2 to transparent
368 if (!(features & l2_feature)) {
369 dev->v110emu[idx] = l2prot;
370 cmd->arg = (cmd->arg & 255) |
371 (ISDN_PROTO_L2_TRANS << 8);
373 dev->v110emu[idx] = 0;
376 return dev->drv[cmd->driver]->interface->command(cmd);
380 isdn_all_eaz(int di, int ch)
388 cmd.command = ISDN_CMD_SETEAZ;
389 cmd.parm.num[0] = '\0';
394 * Begin of a CAPI like LL<->HL interface, currently used only for
395 * supplementary service (CAPI 2.0 part III)
397 #include <linux/isdn/capicmd.h>
400 isdn_capi_rec_hl_msg(capi_msg *cm) {
405 di = (cm->adr.Controller & 0x7f) -1;
406 ch = isdn_dc2minor(di, (cm->adr.Controller>>8)& 0x7f);
407 switch(cm->Command) {
409 /* in the moment only handled in tty */
410 return(isdn_tty_capi_facility(cm));
417 isdn_status_callback(isdn_ctrl * c)
428 i = isdn_dc2minor(di, c->arg);
429 switch (c->command) {
430 case ISDN_STAT_BSENT:
433 if (dev->global_flags & ISDN_GLOBAL_STOPPED)
435 if (isdn_net_stat_callback(i, c))
437 if (isdn_v110_stat_callback(i, c))
439 if (isdn_tty_stat_callback(i, c))
441 wake_up_interruptible(&dev->drv[di]->snd_waitq[c->arg]);
443 case ISDN_STAT_STAVAIL:
444 dev->drv[di]->stavail += c->arg;
445 wake_up_interruptible(&dev->drv[di]->st_waitq);
448 dev->drv[di]->flags |= DRV_FLAG_RUNNING;
449 for (i = 0; i < ISDN_MAX_CHANNELS; i++)
450 if (dev->drvmap[i] == di)
451 isdn_all_eaz(di, dev->chanmap[i]);
452 set_global_features();
455 dev->drv[di]->flags &= ~DRV_FLAG_RUNNING;
457 case ISDN_STAT_ICALL:
460 #ifdef ISDN_DEBUG_STATCALLB
461 printk(KERN_DEBUG "ICALL (net): %d %ld %s\n", di, c->arg, c->parm.num);
463 if (dev->global_flags & ISDN_GLOBAL_STOPPED) {
466 cmd.command = ISDN_CMD_HANGUP;
470 /* Try to find a network-interface which will accept incoming call */
471 r = ((c->command == ISDN_STAT_ICALLW) ? 0 : isdn_net_find_icall(di, c->arg, i, &c->parm.setup));
474 /* No network-device replies.
476 * These return 0 on no match, 1 on match and
477 * 3 on eventually match, if CID is longer.
479 if (c->command == ISDN_STAT_ICALL)
480 if ((retval = isdn_tty_find_icall(di, c->arg, &c->parm.setup))) return(retval);
481 #ifdef CONFIG_ISDN_DIVERSION
483 if ((retval = divert_if->stat_callback(c)))
484 return(retval); /* processed */
485 #endif /* CONFIG_ISDN_DIVERSION */
486 if ((!retval) && (dev->drv[di]->flags & DRV_FLAG_REJBUS)) {
487 /* No tty responding */
490 cmd.command = ISDN_CMD_HANGUP;
496 /* Schedule connection-setup */
500 cmd.command = ISDN_CMD_ACCEPTD;
501 for ( p = dev->netdev; p; p = p->next )
502 if ( p->local->isdn_channel == cmd.arg )
504 strcpy( cmd.parm.setup.eazmsn, p->local->msn );
511 case 2: /* For calling back, first reject incoming call ... */
512 case 3: /* Interface found, but down, reject call actively */
514 printk(KERN_INFO "isdn: Rejecting Call\n");
517 cmd.command = ISDN_CMD_HANGUP;
523 /* ... then start callback. */
527 /* Number would eventually match, if longer */
531 #ifdef ISDN_DEBUG_STATCALLB
532 printk(KERN_DEBUG "ICALL: ret=%d\n", retval);
539 #ifdef ISDN_DEBUG_STATCALLB
540 printk(KERN_DEBUG "CINF: %ld %s\n", c->arg, c->parm.num);
542 if (dev->global_flags & ISDN_GLOBAL_STOPPED)
544 if (strcmp(c->parm.num, "0"))
545 isdn_net_stat_callback(i, c);
546 isdn_tty_stat_callback(i, c);
548 case ISDN_STAT_CAUSE:
549 #ifdef ISDN_DEBUG_STATCALLB
550 printk(KERN_DEBUG "CAUSE: %ld %s\n", c->arg, c->parm.num);
552 printk(KERN_INFO "isdn: %s,ch%ld cause: %s\n",
553 dev->drvid[di], c->arg, c->parm.num);
554 isdn_tty_stat_callback(i, c);
555 #ifdef CONFIG_ISDN_DIVERSION
557 divert_if->stat_callback(c);
558 #endif /* CONFIG_ISDN_DIVERSION */
560 case ISDN_STAT_DISPLAY:
561 #ifdef ISDN_DEBUG_STATCALLB
562 printk(KERN_DEBUG "DISPLAY: %ld %s\n", c->arg, c->parm.display);
564 isdn_tty_stat_callback(i, c);
565 #ifdef CONFIG_ISDN_DIVERSION
567 divert_if->stat_callback(c);
568 #endif /* CONFIG_ISDN_DIVERSION */
570 case ISDN_STAT_DCONN:
573 #ifdef ISDN_DEBUG_STATCALLB
574 printk(KERN_DEBUG "DCONN: %ld\n", c->arg);
576 if (dev->global_flags & ISDN_GLOBAL_STOPPED)
578 /* Find any net-device, waiting for D-channel setup */
579 if (isdn_net_stat_callback(i, c))
581 isdn_v110_stat_callback(i, c);
582 /* Find any ttyI, waiting for D-channel setup */
583 if (isdn_tty_stat_callback(i, c)) {
586 cmd.command = ISDN_CMD_ACCEPTB;
594 #ifdef ISDN_DEBUG_STATCALLB
595 printk(KERN_DEBUG "DHUP: %ld\n", c->arg);
597 if (dev->global_flags & ISDN_GLOBAL_STOPPED)
599 dev->drv[di]->online &= ~(1 << (c->arg));
601 /* Signal hangup to network-devices */
602 if (isdn_net_stat_callback(i, c))
604 isdn_v110_stat_callback(i, c);
605 if (isdn_tty_stat_callback(i, c))
607 #ifdef CONFIG_ISDN_DIVERSION
609 divert_if->stat_callback(c);
610 #endif /* CONFIG_ISDN_DIVERSION */
613 case ISDN_STAT_BCONN:
616 #ifdef ISDN_DEBUG_STATCALLB
617 printk(KERN_DEBUG "BCONN: %ld\n", c->arg);
619 /* Signal B-channel-connect to network-devices */
620 if (dev->global_flags & ISDN_GLOBAL_STOPPED)
622 dev->drv[di]->online |= (1 << (c->arg));
624 if (isdn_net_stat_callback(i, c))
626 isdn_v110_stat_callback(i, c);
627 if (isdn_tty_stat_callback(i, c))
633 #ifdef ISDN_DEBUG_STATCALLB
634 printk(KERN_DEBUG "BHUP: %ld\n", c->arg);
636 if (dev->global_flags & ISDN_GLOBAL_STOPPED)
638 dev->drv[di]->online &= ~(1 << (c->arg));
640 #ifdef CONFIG_ISDN_X25
641 /* Signal hangup to network-devices */
642 if (isdn_net_stat_callback(i, c))
645 isdn_v110_stat_callback(i, c);
646 if (isdn_tty_stat_callback(i, c))
649 case ISDN_STAT_NODCH:
652 #ifdef ISDN_DEBUG_STATCALLB
653 printk(KERN_DEBUG "NODCH: %ld\n", c->arg);
655 if (dev->global_flags & ISDN_GLOBAL_STOPPED)
657 if (isdn_net_stat_callback(i, c))
659 if (isdn_tty_stat_callback(i, c))
662 case ISDN_STAT_ADDCH:
663 spin_lock_irqsave(&dev->lock, flags);
664 if (isdn_add_channels(dev->drv[di], di, c->arg, 1)) {
665 spin_unlock_irqrestore(&dev->lock, flags);
668 spin_unlock_irqrestore(&dev->lock, flags);
671 case ISDN_STAT_DISCH:
672 spin_lock_irqsave(&dev->lock, flags);
673 for (i = 0; i < ISDN_MAX_CHANNELS; i++)
674 if ((dev->drvmap[i] == di) &&
675 (dev->chanmap[i] == c->arg)) {
677 dev->usage[i] &= ~ISDN_USAGE_DISABLED;
679 if (USG_NONE(dev->usage[i])) {
680 dev->usage[i] |= ISDN_USAGE_DISABLED;
686 spin_unlock_irqrestore(&dev->lock, flags);
689 case ISDN_STAT_UNLOAD:
690 while (dev->drv[di]->locks > 0) {
691 isdn_unlock_driver(dev->drv[di]);
693 spin_lock_irqsave(&dev->lock, flags);
694 isdn_tty_stat_callback(i, c);
695 for (i = 0; i < ISDN_MAX_CHANNELS; i++)
696 if (dev->drvmap[i] == di) {
698 dev->chanmap[i] = -1;
699 dev->usage[i] &= ~ISDN_USAGE_DISABLED;
702 dev->channels -= dev->drv[di]->channels;
703 kfree(dev->drv[di]->rcverr);
704 kfree(dev->drv[di]->rcvcount);
705 for (i = 0; i < dev->drv[di]->channels; i++)
706 skb_queue_purge(&dev->drv[di]->rpqueue[i]);
707 kfree(dev->drv[di]->rpqueue);
708 kfree(dev->drv[di]->rcv_waitq);
711 dev->drvid[di][0] = '\0';
713 set_global_features();
714 spin_unlock_irqrestore(&dev->lock, flags);
716 case ISDN_STAT_L1ERR:
718 case CAPI_PUT_MESSAGE:
719 return(isdn_capi_rec_hl_msg(&c->parm.cmsg));
720 #ifdef CONFIG_ISDN_TTY_FAX
721 case ISDN_STAT_FAXIND:
722 isdn_tty_stat_callback(i, c);
725 #ifdef CONFIG_ISDN_AUDIO
726 case ISDN_STAT_AUDIO:
727 isdn_tty_stat_callback(i, c);
730 #ifdef CONFIG_ISDN_DIVERSION
732 case ISDN_STAT_REDIR:
734 return(divert_if->stat_callback(c));
735 #endif /* CONFIG_ISDN_DIVERSION */
743 * Get integer from char-pointer, set pointer to end of number
746 isdn_getnum(char **p)
750 while (*p[0] >= '0' && *p[0] <= '9')
751 v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p[0]++) - '0');
758 * isdn_readbchan() tries to get data from the read-queue.
759 * It MUST be called with interrupts off.
761 * Be aware that this is not an atomic operation when sleep != 0, even though
762 * interrupts are turned off! Well, like that we are currently only called
763 * on behalf of a read system call on raw device files (which are documented
764 * to be dangerous and for for debugging purpose only). The inode semaphore
765 * takes care that this is not called for the same minor device number while
766 * we are sleeping, but access is not serialized against simultaneous read()
767 * from the corresponding ttyI device. Can other ugly events, like changes
768 * of the mapping (di,ch)<->minor, happen during the sleep? --he
771 isdn_readbchan(int di, int channel, u_char * buf, u_char * fp, int len, wait_queue_head_t *sleep)
782 if (skb_queue_empty(&dev->drv[di]->rpqueue[channel])) {
784 interruptible_sleep_on(sleep);
788 if (len > dev->drv[di]->rcvcount[channel])
789 len = dev->drv[di]->rcvcount[channel];
793 if (!(skb = skb_peek(&dev->drv[di]->rpqueue[channel])))
795 #ifdef CONFIG_ISDN_AUDIO
796 if (ISDN_AUDIO_SKB_LOCK(skb))
798 ISDN_AUDIO_SKB_LOCK(skb) = 1;
799 if ((ISDN_AUDIO_SKB_DLECOUNT(skb)) || (dev->drv[di]->DLEflag & (1 << channel))) {
801 unsigned long DLEmask = (1 << channel);
804 count_pull = count_put = 0;
805 while ((count_pull < skb->len) && (len > 0)) {
807 if (dev->drv[di]->DLEflag & DLEmask) {
809 dev->drv[di]->DLEflag &= ~DLEmask;
813 dev->drv[di]->DLEflag |= DLEmask;
814 (ISDN_AUDIO_SKB_DLECOUNT(skb))--;
821 if (count_pull >= skb->len)
825 /* No DLE's in buff, so simply copy it */
827 if ((count_pull = skb->len) > len) {
831 count_put = count_pull;
832 skb_copy_from_linear_data(skb, cp, count_put);
835 #ifdef CONFIG_ISDN_AUDIO
840 memset(fp, 0, count_put);
844 /* We got all the data in this buff.
845 * Now we can dequeue it.
849 #ifdef CONFIG_ISDN_AUDIO
850 ISDN_AUDIO_SKB_LOCK(skb) = 0;
852 skb = skb_dequeue(&dev->drv[di]->rpqueue[channel]);
855 /* Not yet emptied this buff, so it
856 * must stay in the queue, for further calls
857 * but we pull off the data we got until now.
859 skb_pull(skb, count_pull);
860 #ifdef CONFIG_ISDN_AUDIO
861 ISDN_AUDIO_SKB_LOCK(skb) = 0;
864 dev->drv[di]->rcvcount[channel] -= count_put;
870 * isdn_readbchan_tty() tries to get data from the read-queue.
871 * It MUST be called with interrupts off.
873 * Be aware that this is not an atomic operation when sleep != 0, even though
874 * interrupts are turned off! Well, like that we are currently only called
875 * on behalf of a read system call on raw device files (which are documented
876 * to be dangerous and for for debugging purpose only). The inode semaphore
877 * takes care that this is not called for the same minor device number while
878 * we are sleeping, but access is not serialized against simultaneous read()
879 * from the corresponding ttyI device. Can other ugly events, like changes
880 * of the mapping (di,ch)<->minor, happen during the sleep? --he
883 isdn_readbchan_tty(int di, int channel, struct tty_struct *tty, int cisco_hack)
895 if (skb_queue_empty(&dev->drv[di]->rpqueue[channel]))
898 len = tty_buffer_request_room(tty, dev->drv[di]->rcvcount[channel]);
904 if (!(skb = skb_peek(&dev->drv[di]->rpqueue[channel])))
906 #ifdef CONFIG_ISDN_AUDIO
907 if (ISDN_AUDIO_SKB_LOCK(skb))
909 ISDN_AUDIO_SKB_LOCK(skb) = 1;
910 if ((ISDN_AUDIO_SKB_DLECOUNT(skb)) || (dev->drv[di]->DLEflag & (1 << channel))) {
912 unsigned long DLEmask = (1 << channel);
915 count_pull = count_put = 0;
916 while ((count_pull < skb->len) && (len > 0)) {
918 if (dev->drv[di]->DLEflag & DLEmask) {
920 dev->drv[di]->DLEflag &= ~DLEmask;
924 dev->drv[di]->DLEflag |= DLEmask;
925 (ISDN_AUDIO_SKB_DLECOUNT(skb))--;
932 if (count_pull >= skb->len)
936 /* No DLE's in buff, so simply copy it */
938 if ((count_pull = skb->len) > len) {
942 count_put = count_pull;
944 tty_insert_flip_string(tty, skb->data, count_put - 1);
945 last = skb->data[count_put - 1];
947 #ifdef CONFIG_ISDN_AUDIO
952 /* We got all the data in this buff.
953 * Now we can dequeue it.
956 tty_insert_flip_char(tty, last, 0xFF);
958 tty_insert_flip_char(tty, last, TTY_NORMAL);
959 #ifdef CONFIG_ISDN_AUDIO
960 ISDN_AUDIO_SKB_LOCK(skb) = 0;
962 skb = skb_dequeue(&dev->drv[di]->rpqueue[channel]);
965 tty_insert_flip_char(tty, last, TTY_NORMAL);
966 /* Not yet emptied this buff, so it
967 * must stay in the queue, for further calls
968 * but we pull off the data we got until now.
970 skb_pull(skb, count_pull);
971 #ifdef CONFIG_ISDN_AUDIO
972 ISDN_AUDIO_SKB_LOCK(skb) = 0;
975 dev->drv[di]->rcvcount[channel] -= count_put;
982 isdn_minor2drv(int minor)
984 return (dev->drvmap[minor]);
988 isdn_minor2chan(int minor)
990 return (dev->chanmap[minor]);
996 static char istatbuf[2048];
1000 sprintf(istatbuf, "idmap:\t");
1001 p = istatbuf + strlen(istatbuf);
1002 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1003 sprintf(p, "%s ", (dev->drvmap[i] < 0) ? "-" : dev->drvid[dev->drvmap[i]]);
1004 p = istatbuf + strlen(istatbuf);
1006 sprintf(p, "\nchmap:\t");
1007 p = istatbuf + strlen(istatbuf);
1008 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1009 sprintf(p, "%d ", dev->chanmap[i]);
1010 p = istatbuf + strlen(istatbuf);
1012 sprintf(p, "\ndrmap:\t");
1013 p = istatbuf + strlen(istatbuf);
1014 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1015 sprintf(p, "%d ", dev->drvmap[i]);
1016 p = istatbuf + strlen(istatbuf);
1018 sprintf(p, "\nusage:\t");
1019 p = istatbuf + strlen(istatbuf);
1020 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1021 sprintf(p, "%d ", dev->usage[i]);
1022 p = istatbuf + strlen(istatbuf);
1024 sprintf(p, "\nflags:\t");
1025 p = istatbuf + strlen(istatbuf);
1026 for (i = 0; i < ISDN_MAX_DRIVERS; i++) {
1028 sprintf(p, "%ld ", dev->drv[i]->online);
1029 p = istatbuf + strlen(istatbuf);
1032 p = istatbuf + strlen(istatbuf);
1035 sprintf(p, "\nphone:\t");
1036 p = istatbuf + strlen(istatbuf);
1037 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1038 sprintf(p, "%s ", dev->num[i]);
1039 p = istatbuf + strlen(istatbuf);
1045 /* Module interface-code */
1048 isdn_info_update(void)
1050 infostruct *p = dev->infochain;
1054 p = (infostruct *) p->next;
1056 wake_up_interruptible(&(dev->info_waitq));
1060 isdn_read(struct file *file, char __user *buf, size_t count, loff_t * off)
1062 uint minor = iminor(file->f_path.dentry->d_inode);
1070 if (minor == ISDN_MINOR_STATUS) {
1071 if (!file->private_data) {
1072 if (file->f_flags & O_NONBLOCK) {
1076 interruptible_sleep_on(&(dev->info_waitq));
1079 file->private_data = NULL;
1080 if ((len = strlen(p)) <= count) {
1081 if (copy_to_user(buf, p, len)) {
1092 if (!dev->drivers) {
1096 if (minor <= ISDN_MINOR_BMAX) {
1097 printk(KERN_WARNING "isdn_read minor %d obsolete!\n", minor);
1098 drvidx = isdn_minor2drv(minor);
1103 if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING)) {
1107 chidx = isdn_minor2chan(minor);
1108 if (!(p = kmalloc(count, GFP_KERNEL))) {
1112 len = isdn_readbchan(drvidx, chidx, p, NULL, count,
1113 &dev->drv[drvidx]->rcv_waitq[chidx]);
1115 if (copy_to_user(buf,p,len))
1121 if (minor <= ISDN_MINOR_CTRLMAX) {
1122 drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
1127 if (!dev->drv[drvidx]->stavail) {
1128 if (file->f_flags & O_NONBLOCK) {
1132 interruptible_sleep_on(&(dev->drv[drvidx]->st_waitq));
1134 if (dev->drv[drvidx]->interface->readstat) {
1135 if (count > dev->drv[drvidx]->stavail)
1136 count = dev->drv[drvidx]->stavail;
1137 len = dev->drv[drvidx]->interface->readstat(buf, count,
1138 drvidx, isdn_minor2chan(minor - ISDN_MINOR_CTRL));
1147 dev->drv[drvidx]->stavail -= len;
1149 dev->drv[drvidx]->stavail = 0;
1154 #ifdef CONFIG_ISDN_PPP
1155 if (minor <= ISDN_MINOR_PPPMAX) {
1156 retval = isdn_ppp_read(minor - ISDN_MINOR_PPP, file, buf, count);
1167 isdn_write(struct file *file, const char __user *buf, size_t count, loff_t * off)
1169 uint minor = iminor(file->f_path.dentry->d_inode);
1174 if (minor == ISDN_MINOR_STATUS)
1180 if (minor <= ISDN_MINOR_BMAX) {
1181 printk(KERN_WARNING "isdn_write minor %d obsolete!\n", minor);
1182 drvidx = isdn_minor2drv(minor);
1187 if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING)) {
1191 chidx = isdn_minor2chan(minor);
1192 while ((retval = isdn_writebuf_stub(drvidx, chidx, buf, count)) == 0)
1193 interruptible_sleep_on(&dev->drv[drvidx]->snd_waitq[chidx]);
1196 if (minor <= ISDN_MINOR_CTRLMAX) {
1197 drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
1203 * We want to use the isdnctrl device to load the firmware
1205 if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING))
1208 if (dev->drv[drvidx]->interface->writecmd)
1209 retval = dev->drv[drvidx]->interface->
1210 writecmd(buf, count, drvidx,
1211 isdn_minor2chan(minor - ISDN_MINOR_CTRL));
1216 #ifdef CONFIG_ISDN_PPP
1217 if (minor <= ISDN_MINOR_PPPMAX) {
1218 retval = isdn_ppp_write(minor - ISDN_MINOR_PPP, file, buf, count);
1229 isdn_poll(struct file *file, poll_table * wait)
1231 unsigned int mask = 0;
1232 unsigned int minor = iminor(file->f_path.dentry->d_inode);
1233 int drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
1236 if (minor == ISDN_MINOR_STATUS) {
1237 poll_wait(file, &(dev->info_waitq), wait);
1238 /* mask = POLLOUT | POLLWRNORM; */
1239 if (file->private_data) {
1240 mask |= POLLIN | POLLRDNORM;
1244 if (minor >= ISDN_MINOR_CTRL && minor <= ISDN_MINOR_CTRLMAX) {
1246 /* driver deregistered while file open */
1250 poll_wait(file, &(dev->drv[drvidx]->st_waitq), wait);
1251 mask = POLLOUT | POLLWRNORM;
1252 if (dev->drv[drvidx]->stavail) {
1253 mask |= POLLIN | POLLRDNORM;
1257 #ifdef CONFIG_ISDN_PPP
1258 if (minor <= ISDN_MINOR_PPPMAX) {
1259 mask = isdn_ppp_poll(file, wait);
1271 isdn_ioctl(struct inode *inode, struct file *file, uint cmd, ulong arg)
1273 uint minor = iminor(inode);
1284 isdn_ioctl_struct iocts;
1285 isdn_net_ioctl_phone phone;
1286 isdn_net_ioctl_cfg cfg;
1288 void __user *argp = (void __user *)arg;
1290 #define name iocpar.name
1291 #define bname iocpar.bname
1292 #define iocts iocpar.iocts
1293 #define phone iocpar.phone
1294 #define cfg iocpar.cfg
1296 if (minor == ISDN_MINOR_STATUS) {
1304 ulong __user *p = argp;
1306 if (!access_ok(VERIFY_WRITE, p,
1307 sizeof(ulong) * ISDN_MAX_CHANNELS * 2))
1309 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1310 put_user(dev->ibytes[i], p++);
1311 put_user(dev->obytes[i], p++);
1317 #ifdef CONFIG_NETDEVICES
1319 /* Get peer phone number of a connected
1320 * isdn network interface */
1322 if (copy_from_user(&phone, argp, sizeof(phone)))
1324 return isdn_net_getpeer(&phone, argp);
1334 if (minor <= ISDN_MINOR_BMAX) {
1335 drvidx = isdn_minor2drv(minor);
1338 chidx = isdn_minor2chan(minor);
1339 if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING))
1343 if (minor <= ISDN_MINOR_CTRLMAX) {
1345 * isdn net devices manage lots of configuration variables as linked lists.
1346 * Those lists must only be manipulated from user space. Some of the ioctl's
1347 * service routines access user space and are not atomic. Therefor, ioctl's
1348 * manipulating the lists and ioctl's sleeping while accessing the lists
1349 * are serialized by means of a semaphore.
1353 printk(KERN_INFO "INFO: ISDN_DW_ABC_EXTENSION not enabled\n");
1356 printk(KERN_INFO "INFO: ISDN_ABC_LCR_SUPPORT not enabled\n");
1358 #ifdef CONFIG_NETDEVICES
1360 /* Add a network-interface */
1362 if (copy_from_user(name, argp, sizeof(name)))
1368 ret = mutex_lock_interruptible(&dev->mtx);
1369 if( ret ) return ret;
1370 if ((s = isdn_net_new(s, NULL))) {
1371 if (copy_to_user(argp, s, strlen(s) + 1)){
1378 mutex_unlock(&dev->mtx);
1381 /* Add a slave to a network-interface */
1383 if (copy_from_user(bname, argp, sizeof(bname) - 1))
1387 ret = mutex_lock_interruptible(&dev->mtx);
1388 if( ret ) return ret;
1389 if ((s = isdn_net_newslave(bname))) {
1390 if (copy_to_user(argp, s, strlen(s) + 1)){
1397 mutex_unlock(&dev->mtx);
1400 /* Delete a network-interface */
1402 if (copy_from_user(name, argp, sizeof(name)))
1404 ret = mutex_lock_interruptible(&dev->mtx);
1405 if( ret ) return ret;
1406 ret = isdn_net_rm(name);
1407 mutex_unlock(&dev->mtx);
1412 /* Set configurable parameters of a network-interface */
1414 if (copy_from_user(&cfg, argp, sizeof(cfg)))
1416 return isdn_net_setcfg(&cfg);
1420 /* Get configurable parameters of a network-interface */
1422 if (copy_from_user(&cfg, argp, sizeof(cfg)))
1424 if (!(ret = isdn_net_getcfg(&cfg))) {
1425 if (copy_to_user(argp, &cfg, sizeof(cfg)))
1432 /* Add a phone-number to a network-interface */
1434 if (copy_from_user(&phone, argp, sizeof(phone)))
1436 ret = mutex_lock_interruptible(&dev->mtx);
1437 if( ret ) return ret;
1438 ret = isdn_net_addphone(&phone);
1439 mutex_unlock(&dev->mtx);
1444 /* Get list of phone-numbers of a network-interface */
1446 if (copy_from_user(&phone, argp, sizeof(phone)))
1448 ret = mutex_lock_interruptible(&dev->mtx);
1449 if( ret ) return ret;
1450 ret = isdn_net_getphones(&phone, argp);
1451 mutex_unlock(&dev->mtx);
1456 /* Delete a phone-number of a network-interface */
1458 if (copy_from_user(&phone, argp, sizeof(phone)))
1460 ret = mutex_lock_interruptible(&dev->mtx);
1461 if( ret ) return ret;
1462 ret = isdn_net_delphone(&phone);
1463 mutex_unlock(&dev->mtx);
1468 /* Force dialing of a network-interface */
1470 if (copy_from_user(name, argp, sizeof(name)))
1472 return isdn_net_force_dial(name);
1475 #ifdef CONFIG_ISDN_PPP
1479 if (copy_from_user(name, argp, sizeof(name)))
1481 return isdn_ppp_dial_slave(name);
1485 if (copy_from_user(name, argp, sizeof(name)))
1487 return isdn_ppp_hangup_slave(name);
1490 /* Force hangup of a network-interface */
1493 if (copy_from_user(name, argp, sizeof(name)))
1495 return isdn_net_force_hangup(name);
1497 #endif /* CONFIG_NETDEVICES */
1499 dev->net_verbose = arg;
1500 printk(KERN_INFO "isdn: Verbose-Level is %d\n", dev->net_verbose);
1504 dev->global_flags |= ISDN_GLOBAL_STOPPED;
1506 dev->global_flags &= ~ISDN_GLOBAL_STOPPED;
1507 printk(KERN_INFO "isdn: Global Mode %s\n",
1508 (dev->global_flags & ISDN_GLOBAL_STOPPED) ? "stopped" : "running");
1515 if (copy_from_user(&iocts, argp,
1516 sizeof(isdn_ioctl_struct)))
1518 iocts.drvid[sizeof(iocts.drvid)-1] = 0;
1519 if (strlen(iocts.drvid)) {
1520 if ((p = strchr(iocts.drvid, ',')))
1523 for (i = 0; i < ISDN_MAX_DRIVERS; i++)
1524 if (!(strcmp(dev->drvid[i], iocts.drvid))) {
1533 dev->drv[drvidx]->flags |= DRV_FLAG_REJBUS;
1535 dev->drv[drvidx]->flags &= ~DRV_FLAG_REJBUS;
1538 dev->profd = current;
1542 /* Get all Modem-Profiles */
1544 char __user *p = argp;
1547 if (!access_ok(VERIFY_WRITE, argp,
1548 (ISDN_MODEM_NUMREG + ISDN_MSNLEN + ISDN_LMSNLEN)
1549 * ISDN_MAX_CHANNELS))
1552 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1553 if (copy_to_user(p, dev->mdm.info[i].emu.profile,
1556 p += ISDN_MODEM_NUMREG;
1557 if (copy_to_user(p, dev->mdm.info[i].emu.pmsn, ISDN_MSNLEN))
1560 if (copy_to_user(p, dev->mdm.info[i].emu.plmsn, ISDN_LMSNLEN))
1564 return (ISDN_MODEM_NUMREG + ISDN_MSNLEN + ISDN_LMSNLEN) * ISDN_MAX_CHANNELS;
1569 /* Set all Modem-Profiles */
1571 char __user *p = argp;
1574 if (!access_ok(VERIFY_READ, argp,
1575 (ISDN_MODEM_NUMREG + ISDN_MSNLEN + ISDN_LMSNLEN)
1576 * ISDN_MAX_CHANNELS))
1579 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
1580 if (copy_from_user(dev->mdm.info[i].emu.profile, p,
1583 p += ISDN_MODEM_NUMREG;
1584 if (copy_from_user(dev->mdm.info[i].emu.plmsn, p, ISDN_LMSNLEN))
1587 if (copy_from_user(dev->mdm.info[i].emu.pmsn, p, ISDN_MSNLEN))
1597 /* Set/Get MSN->EAZ-Mapping for a driver */
1600 if (copy_from_user(&iocts, argp,
1601 sizeof(isdn_ioctl_struct)))
1603 iocts.drvid[sizeof(iocts.drvid)-1] = 0;
1604 if (strlen(iocts.drvid)) {
1606 for (i = 0; i < ISDN_MAX_DRIVERS; i++)
1607 if (!(strcmp(dev->drvid[i], iocts.drvid))) {
1615 if (cmd == IIOCSETMAP) {
1618 p = (char __user *) iocts.arg;
1624 if (!access_ok(VERIFY_READ, p, 1))
1626 get_user(bname[j], p++);
1633 strcpy(dev->drv[drvidx]->msn2eaz[i], bname);
1639 if (j >= ISDN_MSNLEN)
1646 p = (char __user *) iocts.arg;
1647 for (i = 0; i < 10; i++) {
1648 snprintf(bname, sizeof(bname), "%s%s",
1649 strlen(dev->drv[drvidx]->msn2eaz[i]) ?
1650 dev->drv[drvidx]->msn2eaz[i] : "_",
1651 (i < 9) ? "," : "\0");
1652 if (copy_to_user(p, bname, strlen(bname) + 1))
1662 if (copy_to_user(argp, &dev, sizeof(ulong)))
1669 if ((cmd & IIOCDRVCTL) == IIOCDRVCTL)
1670 cmd = ((cmd >> _IOC_NRSHIFT) & _IOC_NRMASK) & ISDN_DRVIOCTL_MASK;
1676 if (copy_from_user(&iocts, argp, sizeof(isdn_ioctl_struct)))
1678 iocts.drvid[sizeof(iocts.drvid)-1] = 0;
1679 if (strlen(iocts.drvid)) {
1680 if ((p = strchr(iocts.drvid, ',')))
1683 for (i = 0; i < ISDN_MAX_DRIVERS; i++)
1684 if (!(strcmp(dev->drvid[i], iocts.drvid))) {
1692 if (!access_ok(VERIFY_WRITE, argp,
1693 sizeof(isdn_ioctl_struct)))
1696 c.command = ISDN_CMD_IOCTL;
1698 memcpy(c.parm.num, &iocts.arg, sizeof(ulong));
1699 ret = isdn_command(&c);
1700 memcpy(&iocts.arg, c.parm.num, sizeof(ulong));
1701 if (copy_to_user(argp, &iocts, sizeof(isdn_ioctl_struct)))
1708 #ifdef CONFIG_ISDN_PPP
1709 if (minor <= ISDN_MINOR_PPPMAX)
1710 return (isdn_ppp_ioctl(minor - ISDN_MINOR_PPP, file, cmd, arg));
1722 * Open the device code.
1725 isdn_open(struct inode *ino, struct file *filep)
1727 uint minor = iminor(ino);
1730 int retval = -ENODEV;
1733 if (minor == ISDN_MINOR_STATUS) {
1736 if ((p = kmalloc(sizeof(infostruct), GFP_KERNEL))) {
1737 p->next = (char *) dev->infochain;
1738 p->private = (char *) &(filep->private_data);
1740 /* At opening we allow a single update */
1741 filep->private_data = (char *) 1;
1751 if (minor <= ISDN_MINOR_BMAX) {
1752 printk(KERN_WARNING "isdn_open minor %d obsolete!\n", minor);
1753 drvidx = isdn_minor2drv(minor);
1756 chidx = isdn_minor2chan(minor);
1757 if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING))
1759 if (!(dev->drv[drvidx]->online & (1 << chidx)))
1761 isdn_lock_drivers();
1765 if (minor <= ISDN_MINOR_CTRLMAX) {
1766 drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
1769 isdn_lock_drivers();
1773 #ifdef CONFIG_ISDN_PPP
1774 if (minor <= ISDN_MINOR_PPPMAX) {
1775 retval = isdn_ppp_open(minor - ISDN_MINOR_PPP, filep);
1777 isdn_lock_drivers();
1782 nonseekable_open(ino, filep);
1787 isdn_close(struct inode *ino, struct file *filep)
1789 uint minor = iminor(ino);
1792 if (minor == ISDN_MINOR_STATUS) {
1793 infostruct *p = dev->infochain;
1794 infostruct *q = NULL;
1797 if (p->private == (char *) &(filep->private_data)) {
1801 dev->infochain = (infostruct *) (p->next);
1806 p = (infostruct *) (p->next);
1808 printk(KERN_WARNING "isdn: No private data while closing isdnctrl\n");
1811 isdn_unlock_drivers();
1812 if (minor <= ISDN_MINOR_BMAX)
1814 if (minor <= ISDN_MINOR_CTRLMAX) {
1815 if (dev->profd == current)
1819 #ifdef CONFIG_ISDN_PPP
1820 if (minor <= ISDN_MINOR_PPPMAX)
1821 isdn_ppp_release(minor - ISDN_MINOR_PPP, filep);
1829 static const struct file_operations isdn_fops =
1831 .owner = THIS_MODULE,
1832 .llseek = no_llseek,
1834 .write = isdn_write,
1836 .ioctl = isdn_ioctl,
1838 .release = isdn_close,
1842 isdn_map_eaz2msn(char *msn, int di)
1844 isdn_driver_t *this = dev->drv[di];
1847 if (strlen(msn) == 1) {
1849 if ((i >= 0) && (i <= 9))
1850 if (strlen(this->msn2eaz[i]))
1851 return (this->msn2eaz[i]);
1857 * Find an unused ISDN-channel, whose feature-flags match the
1858 * given L2- and L3-protocols.
1860 #define L2V (~(ISDN_FEATURE_L2_V11096|ISDN_FEATURE_L2_V11019|ISDN_FEATURE_L2_V11038))
1863 * This function must be called with holding the dev->lock.
1866 isdn_get_free_channel(int usage, int l2_proto, int l3_proto, int pre_dev
1867 ,int pre_chan, char *msn)
1873 features = ((1 << l2_proto) | (0x10000 << l3_proto));
1874 vfeatures = (((1 << l2_proto) | (0x10000 << l3_proto)) &
1875 ~(ISDN_FEATURE_L2_V11096|ISDN_FEATURE_L2_V11019|ISDN_FEATURE_L2_V11038));
1876 /* If Layer-2 protocol is V.110, accept drivers with
1877 * transparent feature even if these don't support V.110
1878 * because we can emulate this in linklevel.
1880 for (i = 0; i < ISDN_MAX_CHANNELS; i++)
1881 if (USG_NONE(dev->usage[i]) &&
1882 (dev->drvmap[i] != -1)) {
1883 int d = dev->drvmap[i];
1884 if ((dev->usage[i] & ISDN_USAGE_EXCLUSIVE) &&
1885 ((pre_dev != d) || (pre_chan != dev->chanmap[i])))
1887 if (!strcmp(isdn_map_eaz2msn(msn, d), "-"))
1889 if (dev->usage[i] & ISDN_USAGE_DISABLED)
1890 continue; /* usage not allowed */
1891 if (dev->drv[d]->flags & DRV_FLAG_RUNNING) {
1892 if (((dev->drv[d]->interface->features & features) == features) ||
1893 (((dev->drv[d]->interface->features & vfeatures) == vfeatures) &&
1894 (dev->drv[d]->interface->features & ISDN_FEATURE_L2_TRANS))) {
1895 if ((pre_dev < 0) || (pre_chan < 0)) {
1896 dev->usage[i] &= ISDN_USAGE_EXCLUSIVE;
1897 dev->usage[i] |= usage;
1901 if ((pre_dev == d) && (pre_chan == dev->chanmap[i])) {
1902 dev->usage[i] &= ISDN_USAGE_EXCLUSIVE;
1903 dev->usage[i] |= usage;
1915 * Set state of ISDN-channel to 'unused'
1918 isdn_free_channel(int di, int ch, int usage)
1922 if ((di < 0) || (ch < 0)) {
1923 printk(KERN_WARNING "%s: called with invalid drv(%d) or channel(%d)\n",
1924 __FUNCTION__, di, ch);
1927 for (i = 0; i < ISDN_MAX_CHANNELS; i++)
1928 if (((!usage) || ((dev->usage[i] & ISDN_USAGE_MASK) == usage)) &&
1929 (dev->drvmap[i] == di) &&
1930 (dev->chanmap[i] == ch)) {
1931 dev->usage[i] &= (ISDN_USAGE_NONE | ISDN_USAGE_EXCLUSIVE);
1932 strcpy(dev->num[i], "???");
1935 // 20.10.99 JIM, try to reinitialize v110 !
1936 dev->v110emu[i] = 0;
1937 atomic_set(&(dev->v110use[i]), 0);
1938 isdn_v110_close(dev->v110[i]);
1939 dev->v110[i] = NULL;
1940 // 20.10.99 JIM, try to reinitialize v110 !
1943 skb_queue_purge(&dev->drv[di]->rpqueue[ch]);
1948 * Cancel Exclusive-Flag for ISDN-channel
1951 isdn_unexclusive_channel(int di, int ch)
1955 for (i = 0; i < ISDN_MAX_CHANNELS; i++)
1956 if ((dev->drvmap[i] == di) &&
1957 (dev->chanmap[i] == ch)) {
1958 dev->usage[i] &= ~ISDN_USAGE_EXCLUSIVE;
1965 * writebuf replacement for SKB_ABLE drivers
1968 isdn_writebuf_stub(int drvidx, int chan, const u_char __user * buf, int len)
1971 int hl = dev->drv[drvidx]->interface->hl_hdrlen;
1972 struct sk_buff *skb = alloc_skb(hl + len, GFP_ATOMIC);
1976 skb_reserve(skb, hl);
1977 if (copy_from_user(skb_put(skb, len), buf, len))
1979 ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, 1, skb);
1983 dev->obytes[isdn_dc2minor(drvidx, chan)] += ret;
1988 * Return: length of data on success, -ERRcode on failure.
1991 isdn_writebuf_skb_stub(int drvidx, int chan, int ack, struct sk_buff *skb)
1994 struct sk_buff *nskb = NULL;
1995 int v110_ret = skb->len;
1996 int idx = isdn_dc2minor(drvidx, chan);
1998 if (dev->v110[idx]) {
1999 atomic_inc(&dev->v110use[idx]);
2000 nskb = isdn_v110_encode(dev->v110[idx], skb);
2001 atomic_dec(&dev->v110use[idx]);
2004 v110_ret = *((int *)nskb->data);
2005 skb_pull(nskb, sizeof(int));
2007 dev_kfree_skb(nskb);
2010 /* V.110 must always be acknowledged */
2012 ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, ack, nskb);
2014 int hl = dev->drv[drvidx]->interface->hl_hdrlen;
2016 if( skb_headroom(skb) < hl ){
2018 * This should only occur when new HL driver with
2019 * increased hl_hdrlen was loaded after netdevice
2020 * was created and connected to the new driver.
2022 * The V.110 branch (re-allocates on its own) does
2025 struct sk_buff * skb_tmp;
2027 skb_tmp = skb_realloc_headroom(skb, hl);
2028 printk(KERN_DEBUG "isdn_writebuf_skb_stub: reallocating headroom%s\n", skb_tmp ? "" : " failed");
2029 if (!skb_tmp) return -ENOMEM; /* 0 better? */
2030 ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, ack, skb_tmp);
2034 dev_kfree_skb(skb_tmp);
2037 ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, ack, skb);
2041 dev->obytes[idx] += ret;
2042 if (dev->v110[idx]) {
2043 atomic_inc(&dev->v110use[idx]);
2044 dev->v110[idx]->skbuser++;
2045 atomic_dec(&dev->v110use[idx]);
2046 /* For V.110 return unencoded data length */
2048 /* if the complete frame was send we free the skb;
2049 if not upper function will requeue the skb */
2050 if (ret == skb->len)
2055 dev_kfree_skb(nskb);
2060 isdn_add_channels(isdn_driver_t *d, int drvidx, int n, int adding)
2064 init_waitqueue_head(&d->st_waitq);
2065 if (d->flags & DRV_FLAG_RUNNING)
2067 if (n < 1) return 0;
2069 m = (adding) ? d->channels + n : n;
2071 if (dev->channels + n > ISDN_MAX_CHANNELS) {
2072 printk(KERN_WARNING "register_isdn: Max. %d channels supported\n",
2077 if ((adding) && (d->rcverr))
2079 if (!(d->rcverr = kzalloc(sizeof(int) * m, GFP_ATOMIC))) {
2080 printk(KERN_WARNING "register_isdn: Could not alloc rcverr\n");
2084 if ((adding) && (d->rcvcount))
2086 if (!(d->rcvcount = kzalloc(sizeof(int) * m, GFP_ATOMIC))) {
2087 printk(KERN_WARNING "register_isdn: Could not alloc rcvcount\n");
2093 if ((adding) && (d->rpqueue)) {
2094 for (j = 0; j < d->channels; j++)
2095 skb_queue_purge(&d->rpqueue[j]);
2098 if (!(d->rpqueue = kmalloc(sizeof(struct sk_buff_head) * m, GFP_ATOMIC))) {
2099 printk(KERN_WARNING "register_isdn: Could not alloc rpqueue\n");
2106 for (j = 0; j < m; j++) {
2107 skb_queue_head_init(&d->rpqueue[j]);
2110 if ((adding) && (d->rcv_waitq))
2111 kfree(d->rcv_waitq);
2112 d->rcv_waitq = kmalloc(sizeof(wait_queue_head_t) * 2 * m, GFP_ATOMIC);
2113 if (!d->rcv_waitq) {
2114 printk(KERN_WARNING "register_isdn: Could not alloc rcv_waitq\n");
2122 d->snd_waitq = d->rcv_waitq + m;
2123 for (j = 0; j < m; j++) {
2124 init_waitqueue_head(&d->rcv_waitq[j]);
2125 init_waitqueue_head(&d->snd_waitq[j]);
2129 for (j = d->channels; j < m; j++)
2130 for (k = 0; k < ISDN_MAX_CHANNELS; k++)
2131 if (dev->chanmap[k] < 0) {
2132 dev->chanmap[k] = j;
2133 dev->drvmap[k] = drvidx;
2141 * Low-level-driver registration
2145 set_global_features(void)
2149 dev->global_features = 0;
2150 for (drvidx = 0; drvidx < ISDN_MAX_DRIVERS; drvidx++) {
2151 if (!dev->drv[drvidx])
2153 if (dev->drv[drvidx]->interface)
2154 dev->global_features |= dev->drv[drvidx]->interface->features;
2158 #ifdef CONFIG_ISDN_DIVERSION
2160 static char *map_drvname(int di)
2162 if ((di < 0) || (di >= ISDN_MAX_DRIVERS))
2164 return(dev->drvid[di]); /* driver name */
2167 static int map_namedrv(char *id)
2170 for (i = 0; i < ISDN_MAX_DRIVERS; i++)
2171 { if (!strcmp(dev->drvid[i],id))
2177 int DIVERT_REG_NAME(isdn_divert_if *i_div)
2179 if (i_div->if_magic != DIVERT_IF_MAGIC)
2180 return(DIVERT_VER_ERR);
2183 case DIVERT_CMD_REL:
2184 if (divert_if != i_div)
2185 return(DIVERT_REL_ERR);
2186 divert_if = NULL; /* free interface */
2187 return(DIVERT_NO_ERR);
2189 case DIVERT_CMD_REG:
2191 return(DIVERT_REG_ERR);
2192 i_div->ll_cmd = isdn_command; /* set command function */
2193 i_div->drv_to_name = map_drvname;
2194 i_div->name_to_drv = map_namedrv;
2195 divert_if = i_div; /* remember interface */
2196 return(DIVERT_NO_ERR);
2199 return(DIVERT_CMD_ERR);
2201 } /* DIVERT_REG_NAME */
2203 EXPORT_SYMBOL(DIVERT_REG_NAME);
2205 #endif /* CONFIG_ISDN_DIVERSION */
2208 EXPORT_SYMBOL(register_isdn);
2209 #ifdef CONFIG_ISDN_PPP
2210 EXPORT_SYMBOL(isdn_ppp_register_compressor);
2211 EXPORT_SYMBOL(isdn_ppp_unregister_compressor);
2215 register_isdn(isdn_if * i)
2222 if (dev->drivers >= ISDN_MAX_DRIVERS) {
2223 printk(KERN_WARNING "register_isdn: Max. %d drivers supported\n",
2227 if (!i->writebuf_skb) {
2228 printk(KERN_WARNING "register_isdn: No write routine given.\n");
2231 if (!(d = kzalloc(sizeof(isdn_driver_t), GFP_KERNEL))) {
2232 printk(KERN_WARNING "register_isdn: Could not alloc driver-struct\n");
2236 d->maxbufsize = i->maxbufsize;
2239 d->flags = DRV_FLAG_LOADED;
2243 spin_lock_irqsave(&dev->lock, flags);
2244 for (drvidx = 0; drvidx < ISDN_MAX_DRIVERS; drvidx++)
2245 if (!dev->drv[drvidx])
2247 if (isdn_add_channels(d, drvidx, i->channels, 0)) {
2248 spin_unlock_irqrestore(&dev->lock, flags);
2252 i->channels = drvidx;
2253 i->rcvcallb_skb = isdn_receive_skb_callback;
2254 i->statcallb = isdn_status_callback;
2256 sprintf(i->id, "line%d", drvidx);
2257 for (j = 0; j < drvidx; j++)
2258 if (!strcmp(i->id, dev->drvid[j]))
2259 sprintf(i->id, "line%d", drvidx);
2260 dev->drv[drvidx] = d;
2261 strcpy(dev->drvid[drvidx], i->id);
2264 set_global_features();
2265 spin_unlock_irqrestore(&dev->lock, flags);
2270 *****************************************************************************
2271 * And now the modules code.
2272 *****************************************************************************
2276 isdn_getrev(const char *revision)
2281 if ((p = strchr(revision, ':'))) {
2283 p = strchr(rev, '$');
2291 * Allocate and initialize all data, register modem-devices
2293 static int __init isdn_init(void)
2298 if (!(dev = vmalloc(sizeof(isdn_dev)))) {
2299 printk(KERN_WARNING "isdn: Could not allocate device-struct.\n");
2302 memset((char *) dev, 0, sizeof(isdn_dev));
2303 init_timer(&dev->timer);
2304 dev->timer.function = isdn_timer_funct;
2305 spin_lock_init(&dev->lock);
2306 spin_lock_init(&dev->timerlock);
2308 dev->owner = THIS_MODULE;
2310 mutex_init(&dev->mtx);
2311 init_waitqueue_head(&dev->info_waitq);
2312 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
2313 dev->drvmap[i] = -1;
2314 dev->chanmap[i] = -1;
2316 strcpy(dev->num[i], "???");
2317 init_waitqueue_head(&dev->mdm.info[i].open_wait);
2318 init_waitqueue_head(&dev->mdm.info[i].close_wait);
2320 if (register_chrdev(ISDN_MAJOR, "isdn", &isdn_fops)) {
2321 printk(KERN_WARNING "isdn: Could not register control devices\n");
2325 if ((isdn_tty_modem_init()) < 0) {
2326 printk(KERN_WARNING "isdn: Could not register tty devices\n");
2328 unregister_chrdev(ISDN_MAJOR, "isdn");
2331 #ifdef CONFIG_ISDN_PPP
2332 if (isdn_ppp_init() < 0) {
2333 printk(KERN_WARNING "isdn: Could not create PPP-device-structs\n");
2335 unregister_chrdev(ISDN_MAJOR, "isdn");
2339 #endif /* CONFIG_ISDN_PPP */
2341 strcpy(tmprev, isdn_revision);
2342 printk(KERN_NOTICE "ISDN subsystem Rev: %s/", isdn_getrev(tmprev));
2343 strcpy(tmprev, isdn_tty_revision);
2344 printk("%s/", isdn_getrev(tmprev));
2345 strcpy(tmprev, isdn_net_revision);
2346 printk("%s/", isdn_getrev(tmprev));
2347 strcpy(tmprev, isdn_ppp_revision);
2348 printk("%s/", isdn_getrev(tmprev));
2349 strcpy(tmprev, isdn_audio_revision);
2350 printk("%s/", isdn_getrev(tmprev));
2351 strcpy(tmprev, isdn_v110_revision);
2352 printk("%s", isdn_getrev(tmprev));
2355 printk(" loaded\n");
2366 static void __exit isdn_exit(void)
2368 #ifdef CONFIG_ISDN_PPP
2371 if (isdn_net_rmall() < 0) {
2372 printk(KERN_WARNING "isdn: net-device busy, remove cancelled\n");
2376 unregister_chrdev(ISDN_MAJOR, "isdn");
2377 del_timer(&dev->timer);
2378 /* call vfree with interrupts enabled, else it will hang */
2380 printk(KERN_NOTICE "ISDN-subsystem unloaded\n");
2383 module_init(isdn_init);
2384 module_exit(isdn_exit);