1 /* $Id: isdn_divert.c,v 1.6.6.3 2001/09/23 22:24:36 kai Exp $
3 * DSS1 main diversion supplementary handling for i4l.
5 * Copyright 1999 by Werner Cornelius (werner@isdn4linux.de)
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
12 #include <linux/proc_fs.h>
13 #include <linux/slab.h>
14 #include <linux/timer.h>
15 #include <linux/jiffies.h>
17 #include "isdn_divert.h"
19 /**********************************/
20 /* structure keeping calling info */
21 /**********************************/
23 isdn_ctrl ics
; /* delivered setup + driver parameters */
24 ulong divert_id
; /* Id delivered to user */
25 unsigned char akt_state
; /* actual state */
26 char deflect_dest
[35]; /* deflection destination */
27 struct timer_list timer
; /* timer control structure */
28 char info
[90]; /* device info output */
29 struct call_struc
*next
; /* pointer to next entry */
30 struct call_struc
*prev
;
34 /********************************************/
35 /* structure keeping deflection table entry */
36 /********************************************/
37 struct deflect_struc
{
38 struct deflect_struc
*next
, *prev
;
39 divert_rule rule
; /* used rule */
43 /*****************************************/
44 /* variables for main diversion services */
45 /*****************************************/
46 /* diversion/deflection processes */
47 static struct call_struc
*divert_head
= NULL
; /* head of remembered entrys */
48 static ulong next_id
= 1; /* next info id */
49 static struct deflect_struc
*table_head
= NULL
;
50 static struct deflect_struc
*table_tail
= NULL
;
51 static unsigned char extern_wait_max
= 4; /* maximum wait in s for external process */
53 DEFINE_SPINLOCK(divert_lock
);
55 /***************************/
56 /* timer callback function */
57 /***************************/
58 static void deflect_timer_expire(ulong arg
)
61 struct call_struc
*cs
= (struct call_struc
*) arg
;
63 spin_lock_irqsave(&divert_lock
, flags
);
64 del_timer(&cs
->timer
); /* delete active timer */
65 spin_unlock_irqrestore(&divert_lock
, flags
);
67 switch (cs
->akt_state
) {
69 cs
->ics
.command
= ISDN_CMD_HANGUP
; /* cancel action */
70 divert_if
.ll_cmd(&cs
->ics
);
71 spin_lock_irqsave(&divert_lock
, flags
);
72 cs
->akt_state
= DEFLECT_AUTODEL
; /* delete after timeout */
73 cs
->timer
.expires
= jiffies
+ (HZ
* AUTODEL_TIME
);
74 add_timer(&cs
->timer
);
75 spin_unlock_irqrestore(&divert_lock
, flags
);
79 cs
->ics
.command
= ISDN_CMD_REDIR
; /* protocol */
80 strlcpy(cs
->ics
.parm
.setup
.phone
, cs
->deflect_dest
, sizeof(cs
->ics
.parm
.setup
.phone
));
81 strcpy(cs
->ics
.parm
.setup
.eazmsn
, "Testtext delayed");
82 divert_if
.ll_cmd(&cs
->ics
);
83 spin_lock_irqsave(&divert_lock
, flags
);
84 cs
->akt_state
= DEFLECT_AUTODEL
; /* delete after timeout */
85 cs
->timer
.expires
= jiffies
+ (HZ
* AUTODEL_TIME
);
86 add_timer(&cs
->timer
);
87 spin_unlock_irqrestore(&divert_lock
, flags
);
92 spin_lock_irqsave(&divert_lock
, flags
);
94 cs
->prev
->next
= cs
->next
; /* forward link */
96 divert_head
= cs
->next
;
98 cs
->next
->prev
= cs
->prev
; /* back link */
99 spin_unlock_irqrestore(&divert_lock
, flags
);
104 } /* deflect_timer_func */
107 /*****************************************/
108 /* handle call forwarding de/activations */
109 /* 0 = deact, 1 = act, 2 = interrogate */
110 /*****************************************/
111 int cf_command(int drvid
, int mode
,
112 u_char proc
, char *msn
,
113 u_char service
, char *fwd_nr
, ulong
*procid
)
118 char *p
, *ielenp
, tmp
[60];
119 struct call_struc
*cs
;
121 if (strchr(msn
, '.')) return (-EINVAL
); /* subaddress not allowed in msn */
122 if ((proc
& 0x7F) > 2) return (-EINVAL
);
125 *p
++ = 0x30; /* enumeration */
126 ielenp
= p
++; /* remember total length position */
127 *p
++ = 0xa; /* proc tag */
128 *p
++ = 1; /* length */
129 *p
++ = proc
& 0x7F; /* procedure to de/activate/interrogate */
130 *p
++ = 0xa; /* service tag */
131 *p
++ = 1; /* length */
132 *p
++ = service
; /* service to handle */
135 if (!*fwd_nr
) return (-EINVAL
); /* destination missing */
136 if (strchr(fwd_nr
, '.')) return (-EINVAL
); /* subaddress not allowed */
137 fwd_len
= strlen(fwd_nr
);
138 *p
++ = 0x30; /* number enumeration */
139 *p
++ = fwd_len
+ 2; /* complete forward to len */
140 *p
++ = 0x80; /* fwd to nr */
141 *p
++ = fwd_len
; /* length of number */
142 strcpy(p
, fwd_nr
); /* copy number */
143 p
+= fwd_len
; /* pointer beyond fwd */
146 msnlen
= strlen(msn
);
147 *p
++ = 0x80; /* msn number */
149 *p
++ = msnlen
; /* length */
155 *ielenp
= p
- ielenp
- 1; /* set total IE length */
157 /* allocate mem for information struct */
158 if (!(cs
= kmalloc(sizeof(struct call_struc
), GFP_ATOMIC
)))
159 return (-ENOMEM
); /* no memory */
160 init_timer(&cs
->timer
);
162 cs
->timer
.function
= deflect_timer_expire
;
163 cs
->timer
.data
= (ulong
) cs
; /* pointer to own structure */
164 cs
->ics
.driver
= drvid
;
165 cs
->ics
.command
= ISDN_CMD_PROT_IO
; /* protocol specific io */
166 cs
->ics
.arg
= DSS1_CMD_INVOKE
; /* invoke supplementary service */
167 cs
->ics
.parm
.dss1_io
.proc
= (mode
== 1) ? 7 : (mode
== 2) ? 11 : 8; /* operation */
168 cs
->ics
.parm
.dss1_io
.timeout
= 4000; /* from ETS 300 207-1 */
169 cs
->ics
.parm
.dss1_io
.datalen
= p
- tmp
; /* total len */
170 cs
->ics
.parm
.dss1_io
.data
= tmp
; /* start of buffer */
172 spin_lock_irqsave(&divert_lock
, flags
);
173 cs
->ics
.parm
.dss1_io
.ll_id
= next_id
++; /* id for callback */
174 spin_unlock_irqrestore(&divert_lock
, flags
);
175 *procid
= cs
->ics
.parm
.dss1_io
.ll_id
;
177 sprintf(cs
->info
, "%d 0x%lx %s%s 0 %s %02x %d%s%s\n",
178 (!mode
) ? DIVERT_DEACTIVATE
: (mode
== 1) ? DIVERT_ACTIVATE
: DIVERT_REPORT
,
179 cs
->ics
.parm
.dss1_io
.ll_id
,
180 (mode
!= 2) ? "" : "0 ",
181 divert_if
.drv_to_name(cs
->ics
.driver
),
185 (mode
!= 1) ? "" : " 0 ",
186 (mode
!= 1) ? "" : fwd_nr
);
188 retval
= divert_if
.ll_cmd(&cs
->ics
); /* execute command */
192 spin_lock_irqsave(&divert_lock
, flags
);
193 cs
->next
= divert_head
;
195 spin_unlock_irqrestore(&divert_lock
, flags
);
202 /****************************************/
203 /* handle a external deflection command */
204 /****************************************/
205 int deflect_extern_action(u_char cmd
, ulong callid
, char *to_nr
)
207 struct call_struc
*cs
;
212 if ((cmd
& 0x7F) > 2) return (-EINVAL
); /* invalid command */
213 cs
= divert_head
; /* start of parameter list */
215 if (cs
->divert_id
== callid
) break; /* found */
218 if (!cs
) return (-EINVAL
); /* invalid callid */
220 ic
.driver
= cs
->ics
.driver
;
221 ic
.arg
= cs
->ics
.arg
;
223 if (cs
->akt_state
== DEFLECT_AUTODEL
) return (i
); /* no valid call */
224 switch (cmd
& 0x7F) {
226 del_timer(&cs
->timer
);
227 ic
.command
= ISDN_CMD_HANGUP
;
228 i
= divert_if
.ll_cmd(&ic
);
229 spin_lock_irqsave(&divert_lock
, flags
);
230 cs
->akt_state
= DEFLECT_AUTODEL
; /* delete after timeout */
231 cs
->timer
.expires
= jiffies
+ (HZ
* AUTODEL_TIME
);
232 add_timer(&cs
->timer
);
233 spin_unlock_irqrestore(&divert_lock
, flags
);
237 if (cs
->akt_state
== DEFLECT_ALERT
) return (0);
238 cmd
&= 0x7F; /* never wait */
239 del_timer(&cs
->timer
);
240 ic
.command
= ISDN_CMD_ALERT
;
241 if ((i
= divert_if
.ll_cmd(&ic
))) {
242 spin_lock_irqsave(&divert_lock
, flags
);
243 cs
->akt_state
= DEFLECT_AUTODEL
; /* delete after timeout */
244 cs
->timer
.expires
= jiffies
+ (HZ
* AUTODEL_TIME
);
245 add_timer(&cs
->timer
);
246 spin_unlock_irqrestore(&divert_lock
, flags
);
248 cs
->akt_state
= DEFLECT_ALERT
;
252 del_timer(&cs
->timer
);
253 strlcpy(cs
->ics
.parm
.setup
.phone
, to_nr
, sizeof(cs
->ics
.parm
.setup
.phone
));
254 strcpy(cs
->ics
.parm
.setup
.eazmsn
, "Testtext manual");
255 ic
.command
= ISDN_CMD_REDIR
;
256 if ((i
= divert_if
.ll_cmd(&ic
))) {
257 spin_lock_irqsave(&divert_lock
, flags
);
258 cs
->akt_state
= DEFLECT_AUTODEL
; /* delete after timeout */
259 cs
->timer
.expires
= jiffies
+ (HZ
* AUTODEL_TIME
);
260 add_timer(&cs
->timer
);
261 spin_unlock_irqrestore(&divert_lock
, flags
);
263 cs
->akt_state
= DEFLECT_ALERT
;
268 } /* deflect_extern_action */
270 /********************************/
271 /* insert a new rule before idx */
272 /********************************/
273 int insertrule(int idx
, divert_rule
*newrule
)
275 struct deflect_struc
*ds
, *ds1
= NULL
;
278 if (!(ds
= kmalloc(sizeof(struct deflect_struc
), GFP_KERNEL
)))
279 return (-ENOMEM
); /* no memory */
281 ds
->rule
= *newrule
; /* set rule */
283 spin_lock_irqsave(&divert_lock
, flags
);
287 while ((ds1
) && (idx
> 0))
295 ds
->prev
= table_tail
; /* previous entry */
296 ds
->next
= NULL
; /* end of chain */
298 ds
->prev
->next
= ds
; /* last forward */
300 table_head
= ds
; /* is first entry */
301 table_tail
= ds
; /* end of queue */
303 ds
->next
= ds1
; /* next entry */
304 ds
->prev
= ds1
->prev
; /* prev entry */
305 ds1
->prev
= ds
; /* backward chain old element */
307 table_head
= ds
; /* first element */
310 spin_unlock_irqrestore(&divert_lock
, flags
);
314 /***********************************/
315 /* delete the rule at position idx */
316 /***********************************/
317 int deleterule(int idx
)
319 struct deflect_struc
*ds
, *ds1
;
323 spin_lock_irqsave(&divert_lock
, flags
);
327 spin_unlock_irqrestore(&divert_lock
, flags
);
336 spin_lock_irqsave(&divert_lock
, flags
);
339 while ((ds
) && (idx
> 0)) {
345 spin_unlock_irqrestore(&divert_lock
, flags
);
350 ds
->next
->prev
= ds
->prev
; /* backward chain */
352 table_tail
= ds
->prev
; /* end of chain */
355 ds
->prev
->next
= ds
->next
; /* forward chain */
357 table_head
= ds
->next
; /* start of chain */
359 spin_unlock_irqrestore(&divert_lock
, flags
);
364 /*******************************************/
365 /* get a pointer to a specific rule number */
366 /*******************************************/
367 divert_rule
*getruleptr(int idx
)
369 struct deflect_struc
*ds
= table_head
;
371 if (idx
< 0) return (NULL
);
372 while ((ds
) && (idx
>= 0)) {
382 /*************************************************/
383 /* called from common module on an incoming call */
384 /*************************************************/
385 static int isdn_divert_icall(isdn_ctrl
*ic
)
389 struct call_struc
*cs
= NULL
;
390 struct deflect_struc
*dv
;
394 /* first check the internal deflection table */
395 for (dv
= table_head
; dv
; dv
= dv
->next
) {
397 if (((dv
->rule
.callopt
== 1) && (ic
->command
== ISDN_STAT_ICALLW
)) ||
398 ((dv
->rule
.callopt
== 2) && (ic
->command
== ISDN_STAT_ICALL
)))
399 continue; /* call option check */
400 if (!(dv
->rule
.drvid
& (1L << ic
->driver
)))
401 continue; /* driver not matching */
402 if ((dv
->rule
.si1
) && (dv
->rule
.si1
!= ic
->parm
.setup
.si1
))
403 continue; /* si1 not matching */
404 if ((dv
->rule
.si2
) && (dv
->rule
.si2
!= ic
->parm
.setup
.si2
))
405 continue; /* si2 not matching */
408 p1
= ic
->parm
.setup
.eazmsn
;
411 /* complete compare */
413 accept
= 1; /* call accepted */
417 break; /* not accepted */
420 } /* complete compare */
421 if (!accept
) continue; /* not accepted */
423 if ((strcmp(dv
->rule
.caller
, "0")) ||
424 (ic
->parm
.setup
.phone
[0])) {
426 p1
= ic
->parm
.setup
.phone
;
429 /* complete compare */
431 accept
= 1; /* call accepted */
435 break; /* not accepted */
438 } /* complete compare */
439 if (!accept
) continue; /* not accepted */
442 switch (dv
->rule
.action
) {
448 case DEFLECT_PROCEED
:
451 if (dv
->rule
.action
== DEFLECT_PROCEED
)
452 if ((!if_used
) || ((!extern_wait_max
) && (!dv
->rule
.waittime
)))
453 return (0); /* no external deflection needed */
454 if (!(cs
= kmalloc(sizeof(struct call_struc
), GFP_ATOMIC
)))
455 return (0); /* no memory */
456 init_timer(&cs
->timer
);
458 cs
->timer
.function
= deflect_timer_expire
;
459 cs
->timer
.data
= (ulong
) cs
; /* pointer to own structure */
461 cs
->ics
= *ic
; /* copy incoming data */
462 if (!cs
->ics
.parm
.setup
.phone
[0]) strcpy(cs
->ics
.parm
.setup
.phone
, "0");
463 if (!cs
->ics
.parm
.setup
.eazmsn
[0]) strcpy(cs
->ics
.parm
.setup
.eazmsn
, "0");
464 cs
->ics
.parm
.setup
.screen
= dv
->rule
.screen
;
465 if (dv
->rule
.waittime
)
466 cs
->timer
.expires
= jiffies
+ (HZ
* dv
->rule
.waittime
);
467 else if (dv
->rule
.action
== DEFLECT_PROCEED
)
468 cs
->timer
.expires
= jiffies
+ (HZ
* extern_wait_max
);
470 cs
->timer
.expires
= 0;
471 cs
->akt_state
= dv
->rule
.action
;
472 spin_lock_irqsave(&divert_lock
, flags
);
473 cs
->divert_id
= next_id
++; /* new sequence number */
474 spin_unlock_irqrestore(&divert_lock
, flags
);
476 if (cs
->akt_state
== DEFLECT_ALERT
) {
477 strcpy(cs
->deflect_dest
, dv
->rule
.to_nr
);
478 if (!cs
->timer
.expires
) {
479 strcpy(ic
->parm
.setup
.eazmsn
,
481 ic
->parm
.setup
.screen
= dv
->rule
.screen
;
482 strlcpy(ic
->parm
.setup
.phone
, dv
->rule
.to_nr
, sizeof(ic
->parm
.setup
.phone
));
483 cs
->akt_state
= DEFLECT_AUTODEL
; /* delete after timeout */
484 cs
->timer
.expires
= jiffies
+ (HZ
* AUTODEL_TIME
);
487 retval
= 1; /* alerting */
489 cs
->deflect_dest
[0] = '\0';
490 retval
= 4; /* only proceed */
492 sprintf(cs
->info
, "%d 0x%lx %s %s %s %s 0x%x 0x%x %d %d %s\n",
495 divert_if
.drv_to_name(cs
->ics
.driver
),
496 (ic
->command
== ISDN_STAT_ICALLW
) ? "1" : "0",
497 cs
->ics
.parm
.setup
.phone
,
498 cs
->ics
.parm
.setup
.eazmsn
,
499 cs
->ics
.parm
.setup
.si1
,
500 cs
->ics
.parm
.setup
.si2
,
501 cs
->ics
.parm
.setup
.screen
,
504 if ((dv
->rule
.action
== DEFLECT_REPORT
) ||
505 (dv
->rule
.action
== DEFLECT_REJECT
)) {
506 put_info_buffer(cs
->info
);
507 kfree(cs
); /* remove */
508 return ((dv
->rule
.action
== DEFLECT_REPORT
) ? 0 : 2); /* nothing to do */
513 return (0); /* ignore call */
515 } /* switch action */
521 spin_lock_irqsave(&divert_lock
, flags
);
522 cs
->next
= divert_head
;
524 if (cs
->timer
.expires
) add_timer(&cs
->timer
);
525 spin_unlock_irqrestore(&divert_lock
, flags
);
527 put_info_buffer(cs
->info
);
531 } /* isdn_divert_icall */
534 void deleteprocs(void)
536 struct call_struc
*cs
, *cs1
;
539 spin_lock_irqsave(&divert_lock
, flags
);
543 del_timer(&cs
->timer
);
548 spin_unlock_irqrestore(&divert_lock
, flags
);
551 /****************************************************/
552 /* put a address including address type into buffer */
553 /****************************************************/
554 static int put_address(char *st
, u_char
*p
, int len
)
557 u_char adr_typ
= 0; /* network standard */
559 if (len
< 2) return (retval
);
561 retval
= *(++p
) + 2; /* total length */
562 if (retval
> len
) return (0); /* too short */
563 len
= retval
- 2; /* remaining length */
564 if (len
< 3) return (0);
565 if ((*(++p
) != 0x0A) || (*(++p
) != 1)) return (0);
569 if (len
< 2) return (0);
570 if (*p
++ != 0x12) return (0);
571 if (*p
> len
) return (0); /* check number length */
573 } else if (*p
== 0x80) {
574 retval
= *(++p
) + 2; /* total length */
575 if (retval
> len
) return (0);
579 return (0); /* invalid address information */
581 sprintf(st
, "%d ", adr_typ
);
592 /*************************************/
593 /* report a successful interrogation */
594 /*************************************/
595 static int interrogate_success(isdn_ctrl
*ic
, struct call_struc
*cs
)
597 char *src
= ic
->parm
.dss1_io
.data
;
598 int restlen
= ic
->parm
.dss1_io
.datalen
;
601 char st
[90], *p
, *stp
;
603 if (restlen
< 2) return (-100); /* frame too short */
604 if (*src
++ != 0x30) return (-101);
605 if ((n
= *src
++) > 0x81) return (-102); /* invalid length field */
606 restlen
-= 2; /* remaining bytes */
608 if (restlen
< 2) return (-103);
609 if ((*(src
+ restlen
- 1)) || (*(src
+ restlen
- 2))) return (-104);
611 } else if (n
== 0x81) {
614 if (n
> restlen
) return (-105);
616 } else if (n
> restlen
)
619 restlen
= n
; /* standard format */
620 if (restlen
< 3) return (-107); /* no procedure */
621 if ((*src
++ != 2) || (*src
++ != 1) || (*src
++ != 0x0B)) return (-108);
623 if (restlen
< 2) return (-109); /* list missing */
626 if ((n
= *src
++) > 0x81) return (-110); /* invalid length field */
627 restlen
-= 2; /* remaining bytes */
629 if (restlen
< 2) return (-111);
630 if ((*(src
+ restlen
- 1)) || (*(src
+ restlen
- 2))) return (-112);
632 } else if (n
== 0x81) {
635 if (n
> restlen
) return (-113);
637 } else if (n
> restlen
)
640 restlen
= n
; /* standard format */
641 } /* result list header */
643 while (restlen
>= 2) {
645 sprintf(stp
, "%d 0x%lx %d %s ", DIVERT_REPORT
, ic
->parm
.dss1_io
.ll_id
,
646 cnt
++, divert_if
.drv_to_name(ic
->driver
));
648 if (*src
++ != 0x30) return (-115); /* invalid enum */
651 if (n
> restlen
) return (-116); /* enum length wrong */
653 p
= src
; /* one entry */
655 if (!(n1
= put_address(stp
, p
, n
& 0xFF))) continue;
659 if (n
< 6) continue; /* no service and proc */
660 if ((*p
++ != 0x0A) || (*p
++ != 1)) continue;
661 sprintf(stp
, " 0x%02x ", (*p
++) & 0xFF);
663 if ((*p
++ != 0x0A) || (*p
++ != 1)) continue;
664 sprintf(stp
, "%d ", (*p
++) & 0xFF);
668 if (*p
++ != 0x30) continue;
669 if (*p
> (n
- 2)) continue;
671 if (!(n1
= put_address(stp
, p
, n
& 0xFF))) continue;
676 } /* while restlen */
677 if (restlen
) return (-117);
679 } /* interrogate_success */
681 /*********************************************/
682 /* callback for protocol specific extensions */
683 /*********************************************/
684 static int prot_stat_callback(isdn_ctrl
*ic
)
686 struct call_struc
*cs
, *cs1
;
690 cs
= divert_head
; /* start of list */
693 if (ic
->driver
== cs
->ics
.driver
) {
694 switch (cs
->ics
.arg
) {
695 case DSS1_CMD_INVOKE
:
696 if ((cs
->ics
.parm
.dss1_io
.ll_id
== ic
->parm
.dss1_io
.ll_id
) &&
697 (cs
->ics
.parm
.dss1_io
.hl_id
== ic
->parm
.dss1_io
.hl_id
)) {
699 case DSS1_STAT_INVOKE_ERR
:
700 sprintf(cs
->info
, "128 0x%lx 0x%x\n",
701 ic
->parm
.dss1_io
.ll_id
,
702 ic
->parm
.dss1_io
.timeout
);
703 put_info_buffer(cs
->info
);
706 case DSS1_STAT_INVOKE_RES
:
707 switch (cs
->ics
.parm
.dss1_io
.proc
) {
710 put_info_buffer(cs
->info
);
714 i
= interrogate_success(ic
, cs
);
716 sprintf(cs
->info
, "%d 0x%lx %d\n", DIVERT_REPORT
,
717 ic
->parm
.dss1_io
.ll_id
, i
);
718 put_info_buffer(cs
->info
);
722 printk(KERN_WARNING
"dss1_divert: unknown proc %d\n", cs
->ics
.parm
.dss1_io
.proc
);
729 printk(KERN_WARNING
"dss1_divert unknown invoke answer %lx\n", ic
->arg
);
732 cs1
= cs
; /* remember structure */
734 continue; /* abort search */
738 case DSS1_CMD_INVOKE_ABORT
:
739 printk(KERN_WARNING
"dss1_divert unhandled invoke abort\n");
743 printk(KERN_WARNING
"dss1_divert unknown cmd 0x%lx\n", cs
->ics
.arg
);
745 } /* switch ics.arg */
751 printk(KERN_WARNING
"dss1_divert unhandled process\n");
755 if (cs1
->ics
.driver
== -1) {
756 spin_lock_irqsave(&divert_lock
, flags
);
757 del_timer(&cs1
->timer
);
759 cs1
->prev
->next
= cs1
->next
; /* forward link */
761 divert_head
= cs1
->next
;
763 cs1
->next
->prev
= cs1
->prev
; /* back link */
764 spin_unlock_irqrestore(&divert_lock
, flags
);
769 } /* prot_stat_callback */
772 /***************************/
773 /* status callback from HL */
774 /***************************/
775 static int isdn_divert_stat_callback(isdn_ctrl
*ic
)
777 struct call_struc
*cs
, *cs1
;
782 cs
= divert_head
; /* start of list */
784 if ((ic
->driver
== cs
->ics
.driver
) &&
785 (ic
->arg
== cs
->ics
.arg
)) {
786 switch (ic
->command
) {
788 sprintf(cs
->info
, "129 0x%lx\n", cs
->divert_id
);
789 del_timer(&cs
->timer
);
793 case ISDN_STAT_CAUSE
:
794 sprintf(cs
->info
, "130 0x%lx %s\n", cs
->divert_id
, ic
->parm
.num
);
797 case ISDN_STAT_REDIR
:
798 sprintf(cs
->info
, "131 0x%lx\n", cs
->divert_id
);
799 del_timer(&cs
->timer
);
804 sprintf(cs
->info
, "999 0x%lx 0x%x\n", cs
->divert_id
, (int)(ic
->command
));
807 put_info_buffer(cs
->info
);
812 if (cs1
->ics
.driver
== -1) {
813 spin_lock_irqsave(&divert_lock
, flags
);
815 cs1
->prev
->next
= cs1
->next
; /* forward link */
817 divert_head
= cs1
->next
;
819 cs1
->next
->prev
= cs1
->prev
; /* back link */
820 spin_unlock_irqrestore(&divert_lock
, flags
);
824 return (retval
); /* not found */
825 } /* isdn_divert_stat_callback */
828 /********************/
829 /* callback from ll */
830 /********************/
831 int ll_callback(isdn_ctrl
*ic
)
833 switch (ic
->command
) {
834 case ISDN_STAT_ICALL
:
835 case ISDN_STAT_ICALLW
:
836 return (isdn_divert_icall(ic
));
840 if ((ic
->arg
& 0xFF) == ISDN_PTYPE_EURO
) {
841 if (ic
->arg
!= DSS1_STAT_INVOKE_BRD
)
842 return (prot_stat_callback(ic
));
844 return (0); /* DSS1 invoke broadcast */
846 return (-1); /* protocol not euro */
849 return (isdn_divert_stat_callback(ic
));
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