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Commit | Line | Data |
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1da177e4 LT |
1 | /* $Id: capi.c,v 1.1.2.7 2004/04/28 09:48:59 armin Exp $ |
2 | * | |
3 | * CAPI 2.0 Interface for Linux | |
4 | * | |
5 | * Copyright 1996 by Carsten Paeth <calle@calle.de> | |
6 | * | |
7 | * This software may be used and distributed according to the terms | |
8 | * of the GNU General Public License, incorporated herein by reference. | |
9 | * | |
10 | */ | |
11 | ||
1da177e4 LT |
12 | #include <linux/module.h> |
13 | #include <linux/errno.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/major.h> | |
16 | #include <linux/sched.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/fcntl.h> | |
19 | #include <linux/fs.h> | |
20 | #include <linux/signal.h> | |
9ea6e5d8 | 21 | #include <linux/mutex.h> |
1da177e4 | 22 | #include <linux/mm.h> |
a237f3bb | 23 | #include <linux/smp_lock.h> |
1da177e4 LT |
24 | #include <linux/timer.h> |
25 | #include <linux/wait.h> | |
1da177e4 | 26 | #include <linux/tty.h> |
1da177e4 LT |
27 | #include <linux/netdevice.h> |
28 | #include <linux/ppp_defs.h> | |
29 | #include <linux/if_ppp.h> | |
1da177e4 LT |
30 | #include <linux/skbuff.h> |
31 | #include <linux/proc_fs.h> | |
9a58a80a | 32 | #include <linux/seq_file.h> |
1da177e4 LT |
33 | #include <linux/poll.h> |
34 | #include <linux/capi.h> | |
35 | #include <linux/kernelcapi.h> | |
36 | #include <linux/init.h> | |
37 | #include <linux/device.h> | |
38 | #include <linux/moduleparam.h> | |
1da177e4 LT |
39 | #include <linux/isdn/capiutil.h> |
40 | #include <linux/isdn/capicmd.h> | |
90926f0e | 41 | |
1da177e4 | 42 | #include "capifs.h" |
1da177e4 | 43 | |
1da177e4 LT |
44 | MODULE_DESCRIPTION("CAPI4Linux: Userspace /dev/capi20 interface"); |
45 | MODULE_AUTHOR("Carsten Paeth"); | |
46 | MODULE_LICENSE("GPL"); | |
47 | ||
48 | #undef _DEBUG_REFCOUNT /* alloc/free and open/close debug */ | |
49 | #undef _DEBUG_TTYFUNCS /* call to tty_driver */ | |
50 | #undef _DEBUG_DATAFLOW /* data flow */ | |
51 | ||
52 | /* -------- driver information -------------------------------------- */ | |
53 | ||
56b22935 | 54 | static struct class *capi_class; |
408b664a | 55 | static int capi_major = 68; /* allocated */ |
501c87a9 JK |
56 | |
57 | module_param_named(major, capi_major, uint, 0); | |
58 | ||
1da177e4 | 59 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
501c87a9 | 60 | #define CAPINC_NR_PORTS 32 |
1da177e4 | 61 | #define CAPINC_MAX_PORTS 256 |
501c87a9 | 62 | |
408b664a AB |
63 | static int capi_ttymajor = 191; |
64 | static int capi_ttyminors = CAPINC_NR_PORTS; | |
1da177e4 | 65 | |
1da177e4 LT |
66 | module_param_named(ttymajor, capi_ttymajor, uint, 0); |
67 | module_param_named(ttyminors, capi_ttyminors, uint, 0); | |
68 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
69 | ||
70 | /* -------- defines ------------------------------------------------- */ | |
71 | ||
72 | #define CAPINC_MAX_RECVQUEUE 10 | |
73 | #define CAPINC_MAX_SENDQUEUE 10 | |
74 | #define CAPI_MAX_BLKSIZE 2048 | |
75 | ||
76 | /* -------- data structures ----------------------------------------- */ | |
77 | ||
78 | struct capidev; | |
79 | struct capincci; | |
1da177e4 LT |
80 | struct capiminor; |
81 | ||
6aa65472 MB |
82 | struct datahandle_queue { |
83 | struct list_head list; | |
84 | u16 datahandle; | |
85 | }; | |
86 | ||
1da177e4 LT |
87 | struct capiminor { |
88 | struct list_head list; | |
89 | struct capincci *nccip; | |
90 | unsigned int minor; | |
90926f0e | 91 | struct dentry *capifs_dentry; |
1da177e4 LT |
92 | |
93 | struct capi20_appl *ap; | |
94 | u32 ncci; | |
95 | u16 datahandle; | |
96 | u16 msgid; | |
97 | ||
98 | struct tty_struct *tty; | |
99 | int ttyinstop; | |
100 | int ttyoutstop; | |
101 | struct sk_buff *ttyskb; | |
102 | atomic_t ttyopencount; | |
103 | ||
104 | struct sk_buff_head inqueue; | |
105 | int inbytes; | |
106 | struct sk_buff_head outqueue; | |
107 | int outbytes; | |
108 | ||
109 | /* transmit path */ | |
6aa65472 | 110 | struct list_head ackqueue; |
1da177e4 | 111 | int nack; |
6aa65472 | 112 | spinlock_t ackqlock; |
1da177e4 | 113 | }; |
1da177e4 | 114 | |
053b47ff MB |
115 | /* FIXME: The following lock is a sledgehammer-workaround to a |
116 | * locking issue with the capiminor (and maybe other) data structure(s). | |
117 | * Access to this data is done in a racy way and crashes the machine with | |
118 | * a FritzCard DSL driver; sooner or later. This is a workaround | |
119 | * which trades scalability vs stability, so it doesn't crash the kernel anymore. | |
120 | * The correct (and scalable) fix for the issue seems to require | |
121 | * an API change to the drivers... . */ | |
122 | static DEFINE_SPINLOCK(workaround_lock); | |
123 | ||
1da177e4 LT |
124 | struct capincci { |
125 | struct capincci *next; | |
126 | u32 ncci; | |
127 | struct capidev *cdev; | |
128 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
129 | struct capiminor *minorp; | |
130 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
131 | }; | |
132 | ||
133 | struct capidev { | |
134 | struct list_head list; | |
135 | struct capi20_appl ap; | |
136 | u16 errcode; | |
137 | unsigned userflags; | |
138 | ||
139 | struct sk_buff_head recvqueue; | |
140 | wait_queue_head_t recvwait; | |
141 | ||
142 | struct capincci *nccis; | |
143 | ||
9ea6e5d8 | 144 | struct mutex ncci_list_mtx; |
1da177e4 LT |
145 | }; |
146 | ||
147 | /* -------- global variables ---------------------------------------- */ | |
148 | ||
b8f433dc | 149 | static DEFINE_MUTEX(capidev_list_lock); |
1da177e4 LT |
150 | static LIST_HEAD(capidev_list); |
151 | ||
152 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
501c87a9 | 153 | |
1da177e4 LT |
154 | static DEFINE_RWLOCK(capiminor_list_lock); |
155 | static LIST_HEAD(capiminor_list); | |
1da177e4 | 156 | |
1da177e4 LT |
157 | /* -------- datahandles --------------------------------------------- */ |
158 | ||
501c87a9 | 159 | static int capiminor_add_ack(struct capiminor *mp, u16 datahandle) |
1da177e4 | 160 | { |
6aa65472 MB |
161 | struct datahandle_queue *n; |
162 | unsigned long flags; | |
1da177e4 LT |
163 | |
164 | n = kmalloc(sizeof(*n), GFP_ATOMIC); | |
6aa65472 MB |
165 | if (unlikely(!n)) { |
166 | printk(KERN_ERR "capi: alloc datahandle failed\n"); | |
167 | return -1; | |
1da177e4 | 168 | } |
1da177e4 | 169 | n->datahandle = datahandle; |
6aa65472 MB |
170 | INIT_LIST_HEAD(&n->list); |
171 | spin_lock_irqsave(&mp->ackqlock, flags); | |
172 | list_add_tail(&n->list, &mp->ackqueue); | |
1da177e4 | 173 | mp->nack++; |
6aa65472 | 174 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
175 | return 0; |
176 | } | |
177 | ||
178 | static int capiminor_del_ack(struct capiminor *mp, u16 datahandle) | |
179 | { | |
6aa65472 MB |
180 | struct datahandle_queue *p, *tmp; |
181 | unsigned long flags; | |
1da177e4 | 182 | |
6aa65472 MB |
183 | spin_lock_irqsave(&mp->ackqlock, flags); |
184 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { | |
185 | if (p->datahandle == datahandle) { | |
186 | list_del(&p->list); | |
1da177e4 LT |
187 | kfree(p); |
188 | mp->nack--; | |
6aa65472 | 189 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
190 | return 0; |
191 | } | |
192 | } | |
6aa65472 | 193 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
194 | return -1; |
195 | } | |
196 | ||
197 | static void capiminor_del_all_ack(struct capiminor *mp) | |
198 | { | |
6aa65472 MB |
199 | struct datahandle_queue *p, *tmp; |
200 | unsigned long flags; | |
1da177e4 | 201 | |
6aa65472 MB |
202 | spin_lock_irqsave(&mp->ackqlock, flags); |
203 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { | |
204 | list_del(&p->list); | |
1da177e4 LT |
205 | kfree(p); |
206 | mp->nack--; | |
207 | } | |
6aa65472 | 208 | spin_unlock_irqrestore(&mp->ackqlock, flags); |
1da177e4 LT |
209 | } |
210 | ||
211 | ||
212 | /* -------- struct capiminor ---------------------------------------- */ | |
213 | ||
214 | static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci) | |
215 | { | |
216 | struct capiminor *mp, *p; | |
217 | unsigned int minor = 0; | |
218 | unsigned long flags; | |
219 | ||
41f96935 | 220 | mp = kzalloc(sizeof(*mp), GFP_ATOMIC); |
1da177e4 LT |
221 | if (!mp) { |
222 | printk(KERN_ERR "capi: can't alloc capiminor\n"); | |
223 | return NULL; | |
224 | } | |
225 | ||
1da177e4 LT |
226 | mp->ap = ap; |
227 | mp->ncci = ncci; | |
228 | mp->msgid = 0; | |
229 | atomic_set(&mp->ttyopencount,0); | |
6aa65472 MB |
230 | INIT_LIST_HEAD(&mp->ackqueue); |
231 | spin_lock_init(&mp->ackqlock); | |
1da177e4 LT |
232 | |
233 | skb_queue_head_init(&mp->inqueue); | |
234 | skb_queue_head_init(&mp->outqueue); | |
235 | ||
236 | /* Allocate the least unused minor number. | |
237 | */ | |
238 | write_lock_irqsave(&capiminor_list_lock, flags); | |
239 | if (list_empty(&capiminor_list)) | |
240 | list_add(&mp->list, &capiminor_list); | |
241 | else { | |
242 | list_for_each_entry(p, &capiminor_list, list) { | |
243 | if (p->minor > minor) | |
244 | break; | |
245 | minor++; | |
246 | } | |
247 | ||
248 | if (minor < capi_ttyminors) { | |
249 | mp->minor = minor; | |
250 | list_add(&mp->list, p->list.prev); | |
251 | } | |
252 | } | |
253 | write_unlock_irqrestore(&capiminor_list_lock, flags); | |
254 | ||
255 | if (!(minor < capi_ttyminors)) { | |
256 | printk(KERN_NOTICE "capi: out of minors\n"); | |
257 | kfree(mp); | |
258 | return NULL; | |
259 | } | |
260 | ||
261 | return mp; | |
262 | } | |
263 | ||
264 | static void capiminor_free(struct capiminor *mp) | |
265 | { | |
266 | unsigned long flags; | |
267 | ||
268 | write_lock_irqsave(&capiminor_list_lock, flags); | |
269 | list_del(&mp->list); | |
270 | write_unlock_irqrestore(&capiminor_list_lock, flags); | |
271 | ||
d46604e1 | 272 | kfree_skb(mp->ttyskb); |
1da177e4 LT |
273 | mp->ttyskb = NULL; |
274 | skb_queue_purge(&mp->inqueue); | |
275 | skb_queue_purge(&mp->outqueue); | |
276 | capiminor_del_all_ack(mp); | |
277 | kfree(mp); | |
278 | } | |
279 | ||
408b664a | 280 | static struct capiminor *capiminor_find(unsigned int minor) |
1da177e4 LT |
281 | { |
282 | struct list_head *l; | |
283 | struct capiminor *p = NULL; | |
284 | ||
285 | read_lock(&capiminor_list_lock); | |
286 | list_for_each(l, &capiminor_list) { | |
287 | p = list_entry(l, struct capiminor, list); | |
288 | if (p->minor == minor) | |
289 | break; | |
290 | } | |
291 | read_unlock(&capiminor_list_lock); | |
292 | if (l == &capiminor_list) | |
293 | return NULL; | |
294 | ||
295 | return p; | |
296 | } | |
1da177e4 LT |
297 | |
298 | /* -------- struct capincci ----------------------------------------- */ | |
299 | ||
501c87a9 | 300 | static void capincci_alloc_minor(struct capidev *cdev, struct capincci *np) |
1da177e4 | 301 | { |
501c87a9 | 302 | struct capiminor *mp; |
1da177e4 | 303 | |
501c87a9 JK |
304 | if (!(cdev->userflags & CAPIFLAG_HIGHJACKING)) |
305 | return; | |
306 | ||
307 | mp = np->minorp = capiminor_alloc(&cdev->ap, np->ncci); | |
1da177e4 LT |
308 | if (mp) { |
309 | mp->nccip = np; | |
310 | #ifdef _DEBUG_REFCOUNT | |
311 | printk(KERN_DEBUG "set mp->nccip\n"); | |
312 | #endif | |
90926f0e JK |
313 | mp->capifs_dentry = |
314 | capifs_new_ncci(mp->minor, | |
315 | MKDEV(capi_ttymajor, mp->minor)); | |
1da177e4 | 316 | } |
501c87a9 JK |
317 | } |
318 | ||
319 | static void capincci_free_minor(struct capincci *np) | |
320 | { | |
321 | struct capiminor *mp = np->minorp; | |
322 | ||
323 | if (mp) { | |
324 | capifs_free_ncci(mp->capifs_dentry); | |
325 | if (mp->tty) { | |
326 | mp->nccip = NULL; | |
327 | #ifdef _DEBUG_REFCOUNT | |
328 | printk(KERN_DEBUG "reset mp->nccip\n"); | |
329 | #endif | |
330 | tty_hangup(mp->tty); | |
331 | } else { | |
332 | capiminor_free(mp); | |
333 | } | |
334 | } | |
335 | } | |
336 | ||
337 | static inline unsigned int capincci_minor_opencount(struct capincci *np) | |
338 | { | |
339 | struct capiminor *mp = np->minorp; | |
340 | ||
341 | return mp ? atomic_read(&mp->ttyopencount) : 0; | |
342 | } | |
343 | ||
344 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
345 | ||
346 | static inline void | |
347 | capincci_alloc_minor(struct capidev *cdev, struct capincci *np) { } | |
348 | static inline void capincci_free_minor(struct capincci *np) { } | |
349 | ||
350 | static inline unsigned int capincci_minor_opencount(struct capincci *np) | |
351 | { | |
352 | return 0; | |
353 | } | |
354 | ||
355 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
356 | ||
357 | static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci) | |
358 | { | |
359 | struct capincci *np, **pp; | |
360 | ||
361 | np = kzalloc(sizeof(*np), GFP_ATOMIC); | |
362 | if (!np) | |
363 | return NULL; | |
364 | np->ncci = ncci; | |
365 | np->cdev = cdev; | |
366 | ||
367 | capincci_alloc_minor(cdev, np); | |
368 | ||
1da177e4 LT |
369 | for (pp=&cdev->nccis; *pp; pp = &(*pp)->next) |
370 | ; | |
371 | *pp = np; | |
372 | return np; | |
373 | } | |
374 | ||
375 | static void capincci_free(struct capidev *cdev, u32 ncci) | |
376 | { | |
377 | struct capincci *np, **pp; | |
1da177e4 LT |
378 | |
379 | pp=&cdev->nccis; | |
380 | while (*pp) { | |
381 | np = *pp; | |
382 | if (ncci == 0xffffffff || np->ncci == ncci) { | |
383 | *pp = (*pp)->next; | |
501c87a9 | 384 | capincci_free_minor(np); |
1da177e4 | 385 | kfree(np); |
2f9e9b6d | 386 | if (*pp == NULL) return; |
1da177e4 LT |
387 | } else { |
388 | pp = &(*pp)->next; | |
389 | } | |
390 | } | |
391 | } | |
392 | ||
393 | static struct capincci *capincci_find(struct capidev *cdev, u32 ncci) | |
394 | { | |
395 | struct capincci *p; | |
396 | ||
397 | for (p=cdev->nccis; p ; p = p->next) { | |
398 | if (p->ncci == ncci) | |
399 | break; | |
400 | } | |
401 | return p; | |
402 | } | |
403 | ||
404 | /* -------- struct capidev ------------------------------------------ */ | |
405 | ||
406 | static struct capidev *capidev_alloc(void) | |
407 | { | |
408 | struct capidev *cdev; | |
1da177e4 | 409 | |
41f96935 | 410 | cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); |
1da177e4 LT |
411 | if (!cdev) |
412 | return NULL; | |
1da177e4 | 413 | |
9ea6e5d8 | 414 | mutex_init(&cdev->ncci_list_mtx); |
1da177e4 LT |
415 | skb_queue_head_init(&cdev->recvqueue); |
416 | init_waitqueue_head(&cdev->recvwait); | |
b8f433dc JK |
417 | |
418 | mutex_lock(&capidev_list_lock); | |
1da177e4 | 419 | list_add_tail(&cdev->list, &capidev_list); |
b8f433dc JK |
420 | mutex_unlock(&capidev_list_lock); |
421 | ||
1da177e4 LT |
422 | return cdev; |
423 | } | |
424 | ||
425 | static void capidev_free(struct capidev *cdev) | |
426 | { | |
b8f433dc JK |
427 | mutex_lock(&capidev_list_lock); |
428 | list_del(&cdev->list); | |
429 | mutex_unlock(&capidev_list_lock); | |
1da177e4 LT |
430 | |
431 | if (cdev->ap.applid) { | |
432 | capi20_release(&cdev->ap); | |
433 | cdev->ap.applid = 0; | |
434 | } | |
435 | skb_queue_purge(&cdev->recvqueue); | |
436 | ||
9ea6e5d8 | 437 | mutex_lock(&cdev->ncci_list_mtx); |
1da177e4 | 438 | capincci_free(cdev, 0xffffffff); |
9ea6e5d8 | 439 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 | 440 | |
1da177e4 LT |
441 | kfree(cdev); |
442 | } | |
443 | ||
444 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
445 | /* -------- handle data queue --------------------------------------- */ | |
446 | ||
447 | static struct sk_buff * | |
448 | gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb) | |
449 | { | |
450 | struct sk_buff *nskb; | |
451 | nskb = alloc_skb(CAPI_DATA_B3_RESP_LEN, GFP_ATOMIC); | |
452 | if (nskb) { | |
453 | u16 datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4+4+2); | |
454 | unsigned char *s = skb_put(nskb, CAPI_DATA_B3_RESP_LEN); | |
455 | capimsg_setu16(s, 0, CAPI_DATA_B3_RESP_LEN); | |
456 | capimsg_setu16(s, 2, mp->ap->applid); | |
457 | capimsg_setu8 (s, 4, CAPI_DATA_B3); | |
458 | capimsg_setu8 (s, 5, CAPI_RESP); | |
459 | capimsg_setu16(s, 6, mp->msgid++); | |
460 | capimsg_setu32(s, 8, mp->ncci); | |
461 | capimsg_setu16(s, 12, datahandle); | |
462 | } | |
463 | return nskb; | |
464 | } | |
465 | ||
466 | static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb) | |
467 | { | |
468 | struct sk_buff *nskb; | |
469 | int datalen; | |
470 | u16 errcode, datahandle; | |
471 | struct tty_ldisc *ld; | |
472 | ||
473 | datalen = skb->len - CAPIMSG_LEN(skb->data); | |
474 | if (mp->tty == NULL) | |
475 | { | |
476 | #ifdef _DEBUG_DATAFLOW | |
477 | printk(KERN_DEBUG "capi: currently no receiver\n"); | |
478 | #endif | |
479 | return -1; | |
480 | } | |
481 | ||
482 | ld = tty_ldisc_ref(mp->tty); | |
483 | if (ld == NULL) | |
484 | return -1; | |
a352def2 | 485 | if (ld->ops->receive_buf == NULL) { |
1da177e4 LT |
486 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
487 | printk(KERN_DEBUG "capi: ldisc has no receive_buf function\n"); | |
488 | #endif | |
489 | goto bad; | |
490 | } | |
491 | if (mp->ttyinstop) { | |
492 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) | |
493 | printk(KERN_DEBUG "capi: recv tty throttled\n"); | |
494 | #endif | |
495 | goto bad; | |
496 | } | |
33f0f88f | 497 | if (mp->tty->receive_room < datalen) { |
1da177e4 LT |
498 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) |
499 | printk(KERN_DEBUG "capi: no room in tty\n"); | |
500 | #endif | |
501 | goto bad; | |
502 | } | |
2f9e9b6d | 503 | if ((nskb = gen_data_b3_resp_for(mp, skb)) == NULL) { |
1da177e4 LT |
504 | printk(KERN_ERR "capi: gen_data_b3_resp failed\n"); |
505 | goto bad; | |
506 | } | |
507 | datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4); | |
508 | errcode = capi20_put_message(mp->ap, nskb); | |
509 | if (errcode != CAPI_NOERROR) { | |
510 | printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n", | |
511 | errcode); | |
512 | kfree_skb(nskb); | |
513 | goto bad; | |
514 | } | |
515 | (void)skb_pull(skb, CAPIMSG_LEN(skb->data)); | |
516 | #ifdef _DEBUG_DATAFLOW | |
517 | printk(KERN_DEBUG "capi: DATA_B3_RESP %u len=%d => ldisc\n", | |
518 | datahandle, skb->len); | |
519 | #endif | |
a352def2 | 520 | ld->ops->receive_buf(mp->tty, skb->data, NULL, skb->len); |
1da177e4 LT |
521 | kfree_skb(skb); |
522 | tty_ldisc_deref(ld); | |
523 | return 0; | |
524 | bad: | |
525 | tty_ldisc_deref(ld); | |
526 | return -1; | |
527 | } | |
528 | ||
529 | static void handle_minor_recv(struct capiminor *mp) | |
530 | { | |
531 | struct sk_buff *skb; | |
2f9e9b6d | 532 | while ((skb = skb_dequeue(&mp->inqueue)) != NULL) { |
1da177e4 LT |
533 | unsigned int len = skb->len; |
534 | mp->inbytes -= len; | |
535 | if (handle_recv_skb(mp, skb) < 0) { | |
536 | skb_queue_head(&mp->inqueue, skb); | |
537 | mp->inbytes += len; | |
538 | return; | |
539 | } | |
540 | } | |
541 | } | |
542 | ||
543 | static int handle_minor_send(struct capiminor *mp) | |
544 | { | |
545 | struct sk_buff *skb; | |
546 | u16 len; | |
547 | int count = 0; | |
548 | u16 errcode; | |
549 | u16 datahandle; | |
550 | ||
551 | if (mp->tty && mp->ttyoutstop) { | |
552 | #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) | |
553 | printk(KERN_DEBUG "capi: send: tty stopped\n"); | |
554 | #endif | |
555 | return 0; | |
556 | } | |
557 | ||
2f9e9b6d | 558 | while ((skb = skb_dequeue(&mp->outqueue)) != NULL) { |
1da177e4 LT |
559 | datahandle = mp->datahandle; |
560 | len = (u16)skb->len; | |
561 | skb_push(skb, CAPI_DATA_B3_REQ_LEN); | |
562 | memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN); | |
563 | capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN); | |
564 | capimsg_setu16(skb->data, 2, mp->ap->applid); | |
565 | capimsg_setu8 (skb->data, 4, CAPI_DATA_B3); | |
566 | capimsg_setu8 (skb->data, 5, CAPI_REQ); | |
567 | capimsg_setu16(skb->data, 6, mp->msgid++); | |
568 | capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */ | |
5e6c20a9 | 569 | capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */ |
1da177e4 LT |
570 | capimsg_setu16(skb->data, 16, len); /* Data length */ |
571 | capimsg_setu16(skb->data, 18, datahandle); | |
572 | capimsg_setu16(skb->data, 20, 0); /* Flags */ | |
573 | ||
501c87a9 | 574 | if (capiminor_add_ack(mp, datahandle) < 0) { |
1da177e4 LT |
575 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); |
576 | skb_queue_head(&mp->outqueue, skb); | |
577 | return count; | |
578 | } | |
579 | errcode = capi20_put_message(mp->ap, skb); | |
580 | if (errcode == CAPI_NOERROR) { | |
581 | mp->datahandle++; | |
582 | count++; | |
583 | mp->outbytes -= len; | |
584 | #ifdef _DEBUG_DATAFLOW | |
585 | printk(KERN_DEBUG "capi: DATA_B3_REQ %u len=%u\n", | |
586 | datahandle, len); | |
587 | #endif | |
588 | continue; | |
589 | } | |
590 | capiminor_del_ack(mp, datahandle); | |
591 | ||
592 | if (errcode == CAPI_SENDQUEUEFULL) { | |
593 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); | |
594 | skb_queue_head(&mp->outqueue, skb); | |
595 | break; | |
596 | } | |
597 | ||
598 | /* ups, drop packet */ | |
599 | printk(KERN_ERR "capi: put_message = %x\n", errcode); | |
600 | mp->outbytes -= len; | |
601 | kfree_skb(skb); | |
602 | } | |
603 | return count; | |
604 | } | |
605 | ||
606 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
607 | /* -------- function called by lower level -------------------------- */ | |
608 | ||
609 | static void capi_recv_message(struct capi20_appl *ap, struct sk_buff *skb) | |
610 | { | |
611 | struct capidev *cdev = ap->private; | |
612 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
613 | struct capiminor *mp; | |
614 | u16 datahandle; | |
615 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
616 | struct capincci *np; | |
617 | u32 ncci; | |
053b47ff | 618 | unsigned long flags; |
1da177e4 LT |
619 | |
620 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_CONF) { | |
621 | u16 info = CAPIMSG_U16(skb->data, 12); // Info field | |
812d7347 | 622 | if ((info & 0xff00) == 0) { |
9ea6e5d8 | 623 | mutex_lock(&cdev->ncci_list_mtx); |
1da177e4 | 624 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
9ea6e5d8 | 625 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 LT |
626 | } |
627 | } | |
628 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_IND) { | |
9ea6e5d8 | 629 | mutex_lock(&cdev->ncci_list_mtx); |
1da177e4 | 630 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
9ea6e5d8 | 631 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 | 632 | } |
053b47ff | 633 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
634 | if (CAPIMSG_COMMAND(skb->data) != CAPI_DATA_B3) { |
635 | skb_queue_tail(&cdev->recvqueue, skb); | |
636 | wake_up_interruptible(&cdev->recvwait); | |
053b47ff | 637 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
638 | return; |
639 | } | |
640 | ncci = CAPIMSG_CONTROL(skb->data); | |
641 | for (np = cdev->nccis; np && np->ncci != ncci; np = np->next) | |
642 | ; | |
643 | if (!np) { | |
644 | printk(KERN_ERR "BUG: capi_signal: ncci not found\n"); | |
645 | skb_queue_tail(&cdev->recvqueue, skb); | |
646 | wake_up_interruptible(&cdev->recvwait); | |
053b47ff | 647 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
648 | return; |
649 | } | |
501c87a9 | 650 | |
1da177e4 LT |
651 | #ifndef CONFIG_ISDN_CAPI_MIDDLEWARE |
652 | skb_queue_tail(&cdev->recvqueue, skb); | |
653 | wake_up_interruptible(&cdev->recvwait); | |
501c87a9 | 654 | |
1da177e4 | 655 | #else /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
501c87a9 | 656 | |
1da177e4 LT |
657 | mp = np->minorp; |
658 | if (!mp) { | |
659 | skb_queue_tail(&cdev->recvqueue, skb); | |
660 | wake_up_interruptible(&cdev->recvwait); | |
053b47ff | 661 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
662 | return; |
663 | } | |
1da177e4 | 664 | if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) { |
1da177e4 LT |
665 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+4+2); |
666 | #ifdef _DEBUG_DATAFLOW | |
667 | printk(KERN_DEBUG "capi_signal: DATA_B3_IND %u len=%d\n", | |
668 | datahandle, skb->len-CAPIMSG_LEN(skb->data)); | |
669 | #endif | |
670 | skb_queue_tail(&mp->inqueue, skb); | |
671 | mp->inbytes += skb->len; | |
672 | handle_minor_recv(mp); | |
673 | ||
674 | } else if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF) { | |
675 | ||
676 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4); | |
677 | #ifdef _DEBUG_DATAFLOW | |
678 | printk(KERN_DEBUG "capi_signal: DATA_B3_CONF %u 0x%x\n", | |
679 | datahandle, | |
680 | CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+2)); | |
681 | #endif | |
682 | kfree_skb(skb); | |
683 | (void)capiminor_del_ack(mp, datahandle); | |
684 | if (mp->tty) | |
685 | tty_wakeup(mp->tty); | |
686 | (void)handle_minor_send(mp); | |
687 | ||
688 | } else { | |
689 | /* ups, let capi application handle it :-) */ | |
690 | skb_queue_tail(&cdev->recvqueue, skb); | |
691 | wake_up_interruptible(&cdev->recvwait); | |
692 | } | |
693 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
501c87a9 | 694 | |
053b47ff | 695 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
696 | } |
697 | ||
698 | /* -------- file_operations for capidev ----------------------------- */ | |
699 | ||
700 | static ssize_t | |
701 | capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) | |
702 | { | |
703 | struct capidev *cdev = (struct capidev *)file->private_data; | |
704 | struct sk_buff *skb; | |
705 | size_t copied; | |
706 | ||
707 | if (!cdev->ap.applid) | |
708 | return -ENODEV; | |
709 | ||
2f9e9b6d | 710 | if ((skb = skb_dequeue(&cdev->recvqueue)) == NULL) { |
1da177e4 LT |
711 | |
712 | if (file->f_flags & O_NONBLOCK) | |
713 | return -EAGAIN; | |
714 | ||
715 | for (;;) { | |
716 | interruptible_sleep_on(&cdev->recvwait); | |
2f9e9b6d | 717 | if ((skb = skb_dequeue(&cdev->recvqueue)) != NULL) |
1da177e4 LT |
718 | break; |
719 | if (signal_pending(current)) | |
720 | break; | |
721 | } | |
2f9e9b6d | 722 | if (skb == NULL) |
1da177e4 LT |
723 | return -ERESTARTNOHAND; |
724 | } | |
725 | if (skb->len > count) { | |
726 | skb_queue_head(&cdev->recvqueue, skb); | |
727 | return -EMSGSIZE; | |
728 | } | |
729 | if (copy_to_user(buf, skb->data, skb->len)) { | |
730 | skb_queue_head(&cdev->recvqueue, skb); | |
731 | return -EFAULT; | |
732 | } | |
733 | copied = skb->len; | |
734 | ||
735 | kfree_skb(skb); | |
736 | ||
737 | return copied; | |
738 | } | |
739 | ||
740 | static ssize_t | |
741 | capi_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) | |
742 | { | |
743 | struct capidev *cdev = (struct capidev *)file->private_data; | |
744 | struct sk_buff *skb; | |
745 | u16 mlen; | |
746 | ||
747 | if (!cdev->ap.applid) | |
748 | return -ENODEV; | |
749 | ||
750 | skb = alloc_skb(count, GFP_USER); | |
751 | if (!skb) | |
752 | return -ENOMEM; | |
753 | ||
754 | if (copy_from_user(skb_put(skb, count), buf, count)) { | |
755 | kfree_skb(skb); | |
756 | return -EFAULT; | |
757 | } | |
758 | mlen = CAPIMSG_LEN(skb->data); | |
759 | if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) { | |
760 | if ((size_t)(mlen + CAPIMSG_DATALEN(skb->data)) != count) { | |
761 | kfree_skb(skb); | |
762 | return -EINVAL; | |
763 | } | |
764 | } else { | |
765 | if (mlen != count) { | |
766 | kfree_skb(skb); | |
767 | return -EINVAL; | |
768 | } | |
769 | } | |
770 | CAPIMSG_SETAPPID(skb->data, cdev->ap.applid); | |
771 | ||
772 | if (CAPIMSG_CMD(skb->data) == CAPI_DISCONNECT_B3_RESP) { | |
9ea6e5d8 | 773 | mutex_lock(&cdev->ncci_list_mtx); |
1da177e4 | 774 | capincci_free(cdev, CAPIMSG_NCCI(skb->data)); |
9ea6e5d8 | 775 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 LT |
776 | } |
777 | ||
778 | cdev->errcode = capi20_put_message(&cdev->ap, skb); | |
779 | ||
780 | if (cdev->errcode) { | |
781 | kfree_skb(skb); | |
782 | return -EIO; | |
783 | } | |
784 | return count; | |
785 | } | |
786 | ||
787 | static unsigned int | |
788 | capi_poll(struct file *file, poll_table * wait) | |
789 | { | |
790 | struct capidev *cdev = (struct capidev *)file->private_data; | |
791 | unsigned int mask = 0; | |
792 | ||
793 | if (!cdev->ap.applid) | |
794 | return POLLERR; | |
795 | ||
796 | poll_wait(file, &(cdev->recvwait), wait); | |
797 | mask = POLLOUT | POLLWRNORM; | |
798 | if (!skb_queue_empty(&cdev->recvqueue)) | |
799 | mask |= POLLIN | POLLRDNORM; | |
800 | return mask; | |
801 | } | |
802 | ||
803 | static int | |
804 | capi_ioctl(struct inode *inode, struct file *file, | |
805 | unsigned int cmd, unsigned long arg) | |
806 | { | |
807 | struct capidev *cdev = file->private_data; | |
808 | struct capi20_appl *ap = &cdev->ap; | |
809 | capi_ioctl_struct data; | |
810 | int retval = -EINVAL; | |
811 | void __user *argp = (void __user *)arg; | |
812 | ||
813 | switch (cmd) { | |
814 | case CAPI_REGISTER: | |
815 | { | |
816 | if (ap->applid) | |
817 | return -EEXIST; | |
818 | ||
819 | if (copy_from_user(&cdev->ap.rparam, argp, | |
820 | sizeof(struct capi_register_params))) | |
821 | return -EFAULT; | |
822 | ||
823 | cdev->ap.private = cdev; | |
824 | cdev->ap.recv_message = capi_recv_message; | |
825 | cdev->errcode = capi20_register(ap); | |
826 | if (cdev->errcode) { | |
827 | ap->applid = 0; | |
828 | return -EIO; | |
829 | } | |
830 | } | |
831 | return (int)ap->applid; | |
832 | ||
833 | case CAPI_GET_VERSION: | |
834 | { | |
835 | if (copy_from_user(&data.contr, argp, | |
836 | sizeof(data.contr))) | |
837 | return -EFAULT; | |
838 | cdev->errcode = capi20_get_version(data.contr, &data.version); | |
839 | if (cdev->errcode) | |
840 | return -EIO; | |
841 | if (copy_to_user(argp, &data.version, | |
842 | sizeof(data.version))) | |
843 | return -EFAULT; | |
844 | } | |
845 | return 0; | |
846 | ||
847 | case CAPI_GET_SERIAL: | |
848 | { | |
849 | if (copy_from_user(&data.contr, argp, | |
850 | sizeof(data.contr))) | |
851 | return -EFAULT; | |
852 | cdev->errcode = capi20_get_serial (data.contr, data.serial); | |
853 | if (cdev->errcode) | |
854 | return -EIO; | |
855 | if (copy_to_user(argp, data.serial, | |
856 | sizeof(data.serial))) | |
857 | return -EFAULT; | |
858 | } | |
859 | return 0; | |
860 | case CAPI_GET_PROFILE: | |
861 | { | |
862 | if (copy_from_user(&data.contr, argp, | |
863 | sizeof(data.contr))) | |
864 | return -EFAULT; | |
865 | ||
866 | if (data.contr == 0) { | |
867 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); | |
868 | if (cdev->errcode) | |
869 | return -EIO; | |
870 | ||
871 | retval = copy_to_user(argp, | |
872 | &data.profile.ncontroller, | |
873 | sizeof(data.profile.ncontroller)); | |
874 | ||
875 | } else { | |
876 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); | |
877 | if (cdev->errcode) | |
878 | return -EIO; | |
879 | ||
880 | retval = copy_to_user(argp, &data.profile, | |
881 | sizeof(data.profile)); | |
882 | } | |
883 | if (retval) | |
884 | return -EFAULT; | |
885 | } | |
886 | return 0; | |
887 | ||
888 | case CAPI_GET_MANUFACTURER: | |
889 | { | |
890 | if (copy_from_user(&data.contr, argp, | |
891 | sizeof(data.contr))) | |
892 | return -EFAULT; | |
893 | cdev->errcode = capi20_get_manufacturer(data.contr, data.manufacturer); | |
894 | if (cdev->errcode) | |
895 | return -EIO; | |
896 | ||
897 | if (copy_to_user(argp, data.manufacturer, | |
898 | sizeof(data.manufacturer))) | |
899 | return -EFAULT; | |
900 | ||
901 | } | |
902 | return 0; | |
903 | case CAPI_GET_ERRCODE: | |
904 | data.errcode = cdev->errcode; | |
905 | cdev->errcode = CAPI_NOERROR; | |
906 | if (arg) { | |
907 | if (copy_to_user(argp, &data.errcode, | |
908 | sizeof(data.errcode))) | |
909 | return -EFAULT; | |
910 | } | |
911 | return data.errcode; | |
912 | ||
913 | case CAPI_INSTALLED: | |
914 | if (capi20_isinstalled() == CAPI_NOERROR) | |
915 | return 0; | |
916 | return -ENXIO; | |
917 | ||
918 | case CAPI_MANUFACTURER_CMD: | |
919 | { | |
920 | struct capi_manufacturer_cmd mcmd; | |
921 | if (!capable(CAP_SYS_ADMIN)) | |
922 | return -EPERM; | |
923 | if (copy_from_user(&mcmd, argp, sizeof(mcmd))) | |
924 | return -EFAULT; | |
925 | return capi20_manufacturer(mcmd.cmd, mcmd.data); | |
926 | } | |
927 | return 0; | |
928 | ||
929 | case CAPI_SET_FLAGS: | |
930 | case CAPI_CLR_FLAGS: | |
931 | { | |
932 | unsigned userflags; | |
933 | if (copy_from_user(&userflags, argp, | |
934 | sizeof(userflags))) | |
935 | return -EFAULT; | |
936 | if (cmd == CAPI_SET_FLAGS) | |
937 | cdev->userflags |= userflags; | |
938 | else | |
939 | cdev->userflags &= ~userflags; | |
940 | } | |
941 | return 0; | |
942 | ||
943 | case CAPI_GET_FLAGS: | |
944 | if (copy_to_user(argp, &cdev->userflags, | |
945 | sizeof(cdev->userflags))) | |
946 | return -EFAULT; | |
947 | return 0; | |
948 | ||
949 | case CAPI_NCCI_OPENCOUNT: | |
950 | { | |
951 | struct capincci *nccip; | |
1da177e4 LT |
952 | unsigned ncci; |
953 | int count = 0; | |
954 | if (copy_from_user(&ncci, argp, sizeof(ncci))) | |
955 | return -EFAULT; | |
956 | ||
9ea6e5d8 | 957 | mutex_lock(&cdev->ncci_list_mtx); |
2f9e9b6d | 958 | if ((nccip = capincci_find(cdev, (u32) ncci)) == NULL) { |
9ea6e5d8 | 959 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 LT |
960 | return 0; |
961 | } | |
501c87a9 | 962 | count += capincci_minor_opencount(nccip); |
9ea6e5d8 | 963 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 LT |
964 | return count; |
965 | } | |
966 | return 0; | |
967 | ||
968 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
969 | case CAPI_NCCI_GETUNIT: | |
970 | { | |
971 | struct capincci *nccip; | |
972 | struct capiminor *mp; | |
973 | unsigned ncci; | |
974 | int unit = 0; | |
975 | if (copy_from_user(&ncci, argp, | |
976 | sizeof(ncci))) | |
977 | return -EFAULT; | |
9ea6e5d8 | 978 | mutex_lock(&cdev->ncci_list_mtx); |
1da177e4 | 979 | nccip = capincci_find(cdev, (u32) ncci); |
2f9e9b6d | 980 | if (!nccip || (mp = nccip->minorp) == NULL) { |
9ea6e5d8 | 981 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 LT |
982 | return -ESRCH; |
983 | } | |
984 | unit = mp->minor; | |
9ea6e5d8 | 985 | mutex_unlock(&cdev->ncci_list_mtx); |
1da177e4 LT |
986 | return unit; |
987 | } | |
988 | return 0; | |
989 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
990 | } | |
991 | return -EINVAL; | |
992 | } | |
993 | ||
994 | static int | |
995 | capi_open(struct inode *inode, struct file *file) | |
996 | { | |
a237f3bb JC |
997 | int ret; |
998 | ||
999 | lock_kernel(); | |
1da177e4 | 1000 | if (file->private_data) |
a237f3bb JC |
1001 | ret = -EEXIST; |
1002 | else if ((file->private_data = capidev_alloc()) == NULL) | |
1003 | ret = -ENOMEM; | |
1004 | else | |
1005 | ret = nonseekable_open(inode, file); | |
1006 | unlock_kernel(); | |
1007 | return ret; | |
1da177e4 LT |
1008 | } |
1009 | ||
1010 | static int | |
1011 | capi_release(struct inode *inode, struct file *file) | |
1012 | { | |
1013 | struct capidev *cdev = (struct capidev *)file->private_data; | |
1014 | ||
1015 | capidev_free(cdev); | |
1016 | file->private_data = NULL; | |
1017 | ||
1018 | return 0; | |
1019 | } | |
1020 | ||
2b8693c0 | 1021 | static const struct file_operations capi_fops = |
1da177e4 LT |
1022 | { |
1023 | .owner = THIS_MODULE, | |
1024 | .llseek = no_llseek, | |
1025 | .read = capi_read, | |
1026 | .write = capi_write, | |
1027 | .poll = capi_poll, | |
1028 | .ioctl = capi_ioctl, | |
1029 | .open = capi_open, | |
1030 | .release = capi_release, | |
1031 | }; | |
1032 | ||
1033 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE | |
1034 | /* -------- tty_operations for capincci ----------------------------- */ | |
1035 | ||
1036 | static int capinc_tty_open(struct tty_struct * tty, struct file * file) | |
1037 | { | |
1038 | struct capiminor *mp; | |
053b47ff | 1039 | unsigned long flags; |
1da177e4 | 1040 | |
2f9e9b6d | 1041 | if ((mp = capiminor_find(iminor(file->f_path.dentry->d_inode))) == NULL) |
1da177e4 | 1042 | return -ENXIO; |
2f9e9b6d | 1043 | if (mp->nccip == NULL) |
1da177e4 LT |
1044 | return -ENXIO; |
1045 | ||
1046 | tty->driver_data = (void *)mp; | |
1047 | ||
053b47ff | 1048 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1049 | if (atomic_read(&mp->ttyopencount) == 0) |
1050 | mp->tty = tty; | |
1051 | atomic_inc(&mp->ttyopencount); | |
1052 | #ifdef _DEBUG_REFCOUNT | |
1053 | printk(KERN_DEBUG "capinc_tty_open ocount=%d\n", atomic_read(&mp->ttyopencount)); | |
1054 | #endif | |
1055 | handle_minor_recv(mp); | |
053b47ff | 1056 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1057 | return 0; |
1058 | } | |
1059 | ||
1060 | static void capinc_tty_close(struct tty_struct * tty, struct file * file) | |
1061 | { | |
1062 | struct capiminor *mp; | |
1063 | ||
1064 | mp = (struct capiminor *)tty->driver_data; | |
1065 | if (mp) { | |
1066 | if (atomic_dec_and_test(&mp->ttyopencount)) { | |
1067 | #ifdef _DEBUG_REFCOUNT | |
1068 | printk(KERN_DEBUG "capinc_tty_close lastclose\n"); | |
1069 | #endif | |
1070 | tty->driver_data = NULL; | |
1071 | mp->tty = NULL; | |
1072 | } | |
1073 | #ifdef _DEBUG_REFCOUNT | |
1074 | printk(KERN_DEBUG "capinc_tty_close ocount=%d\n", atomic_read(&mp->ttyopencount)); | |
1075 | #endif | |
2f9e9b6d | 1076 | if (mp->nccip == NULL) |
1da177e4 LT |
1077 | capiminor_free(mp); |
1078 | } | |
1079 | ||
1080 | #ifdef _DEBUG_REFCOUNT | |
1081 | printk(KERN_DEBUG "capinc_tty_close\n"); | |
1082 | #endif | |
1083 | } | |
1084 | ||
1085 | static int capinc_tty_write(struct tty_struct * tty, | |
1086 | const unsigned char *buf, int count) | |
1087 | { | |
1088 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1089 | struct sk_buff *skb; | |
053b47ff | 1090 | unsigned long flags; |
1da177e4 LT |
1091 | |
1092 | #ifdef _DEBUG_TTYFUNCS | |
1093 | printk(KERN_DEBUG "capinc_tty_write(count=%d)\n", count); | |
1094 | #endif | |
1095 | ||
1096 | if (!mp || !mp->nccip) { | |
1097 | #ifdef _DEBUG_TTYFUNCS | |
1098 | printk(KERN_DEBUG "capinc_tty_write: mp or mp->ncci NULL\n"); | |
1099 | #endif | |
1100 | return 0; | |
1101 | } | |
1102 | ||
053b47ff | 1103 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1104 | skb = mp->ttyskb; |
1105 | if (skb) { | |
1106 | mp->ttyskb = NULL; | |
1107 | skb_queue_tail(&mp->outqueue, skb); | |
1108 | mp->outbytes += skb->len; | |
1109 | } | |
1110 | ||
1111 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+count, GFP_ATOMIC); | |
1112 | if (!skb) { | |
1113 | printk(KERN_ERR "capinc_tty_write: alloc_skb failed\n"); | |
053b47ff | 1114 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1115 | return -ENOMEM; |
1116 | } | |
1117 | ||
1118 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); | |
1119 | memcpy(skb_put(skb, count), buf, count); | |
1120 | ||
1121 | skb_queue_tail(&mp->outqueue, skb); | |
1122 | mp->outbytes += skb->len; | |
1123 | (void)handle_minor_send(mp); | |
1124 | (void)handle_minor_recv(mp); | |
053b47ff | 1125 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1126 | return count; |
1127 | } | |
1128 | ||
f2545a75 | 1129 | static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 LT |
1130 | { |
1131 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1132 | struct sk_buff *skb; | |
053b47ff | 1133 | unsigned long flags; |
f2545a75 | 1134 | int ret = 1; |
1da177e4 LT |
1135 | |
1136 | #ifdef _DEBUG_TTYFUNCS | |
1137 | printk(KERN_DEBUG "capinc_put_char(%u)\n", ch); | |
1138 | #endif | |
1139 | ||
1140 | if (!mp || !mp->nccip) { | |
1141 | #ifdef _DEBUG_TTYFUNCS | |
1142 | printk(KERN_DEBUG "capinc_tty_put_char: mp or mp->ncci NULL\n"); | |
1143 | #endif | |
f2545a75 | 1144 | return 0; |
1da177e4 LT |
1145 | } |
1146 | ||
053b47ff | 1147 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1148 | skb = mp->ttyskb; |
1149 | if (skb) { | |
1150 | if (skb_tailroom(skb) > 0) { | |
1151 | *(skb_put(skb, 1)) = ch; | |
053b47ff | 1152 | spin_unlock_irqrestore(&workaround_lock, flags); |
f2545a75 | 1153 | return 1; |
1da177e4 LT |
1154 | } |
1155 | mp->ttyskb = NULL; | |
1156 | skb_queue_tail(&mp->outqueue, skb); | |
1157 | mp->outbytes += skb->len; | |
1158 | (void)handle_minor_send(mp); | |
1159 | } | |
1160 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+CAPI_MAX_BLKSIZE, GFP_ATOMIC); | |
1161 | if (skb) { | |
1162 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); | |
1163 | *(skb_put(skb, 1)) = ch; | |
1164 | mp->ttyskb = skb; | |
1165 | } else { | |
1166 | printk(KERN_ERR "capinc_put_char: char %u lost\n", ch); | |
f2545a75 | 1167 | ret = 0; |
1da177e4 | 1168 | } |
053b47ff | 1169 | spin_unlock_irqrestore(&workaround_lock, flags); |
f2545a75 | 1170 | return ret; |
1da177e4 LT |
1171 | } |
1172 | ||
1173 | static void capinc_tty_flush_chars(struct tty_struct *tty) | |
1174 | { | |
1175 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1176 | struct sk_buff *skb; | |
053b47ff | 1177 | unsigned long flags; |
1da177e4 LT |
1178 | |
1179 | #ifdef _DEBUG_TTYFUNCS | |
1180 | printk(KERN_DEBUG "capinc_tty_flush_chars\n"); | |
1181 | #endif | |
1182 | ||
1183 | if (!mp || !mp->nccip) { | |
1184 | #ifdef _DEBUG_TTYFUNCS | |
1185 | printk(KERN_DEBUG "capinc_tty_flush_chars: mp or mp->ncci NULL\n"); | |
1186 | #endif | |
1187 | return; | |
1188 | } | |
1189 | ||
053b47ff | 1190 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1191 | skb = mp->ttyskb; |
1192 | if (skb) { | |
1193 | mp->ttyskb = NULL; | |
1194 | skb_queue_tail(&mp->outqueue, skb); | |
1195 | mp->outbytes += skb->len; | |
1196 | (void)handle_minor_send(mp); | |
1197 | } | |
1198 | (void)handle_minor_recv(mp); | |
053b47ff | 1199 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1200 | } |
1201 | ||
1202 | static int capinc_tty_write_room(struct tty_struct *tty) | |
1203 | { | |
1204 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1205 | int room; | |
1206 | if (!mp || !mp->nccip) { | |
1207 | #ifdef _DEBUG_TTYFUNCS | |
1208 | printk(KERN_DEBUG "capinc_tty_write_room: mp or mp->ncci NULL\n"); | |
1209 | #endif | |
1210 | return 0; | |
1211 | } | |
1212 | room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue); | |
1213 | room *= CAPI_MAX_BLKSIZE; | |
1214 | #ifdef _DEBUG_TTYFUNCS | |
1215 | printk(KERN_DEBUG "capinc_tty_write_room = %d\n", room); | |
1216 | #endif | |
1217 | return room; | |
1218 | } | |
1219 | ||
408b664a | 1220 | static int capinc_tty_chars_in_buffer(struct tty_struct *tty) |
1da177e4 LT |
1221 | { |
1222 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1223 | if (!mp || !mp->nccip) { | |
1224 | #ifdef _DEBUG_TTYFUNCS | |
1225 | printk(KERN_DEBUG "capinc_tty_chars_in_buffer: mp or mp->ncci NULL\n"); | |
1226 | #endif | |
1227 | return 0; | |
1228 | } | |
1229 | #ifdef _DEBUG_TTYFUNCS | |
1230 | printk(KERN_DEBUG "capinc_tty_chars_in_buffer = %d nack=%d sq=%d rq=%d\n", | |
1231 | mp->outbytes, mp->nack, | |
1232 | skb_queue_len(&mp->outqueue), | |
1233 | skb_queue_len(&mp->inqueue)); | |
1234 | #endif | |
1235 | return mp->outbytes; | |
1236 | } | |
1237 | ||
1238 | static int capinc_tty_ioctl(struct tty_struct *tty, struct file * file, | |
1239 | unsigned int cmd, unsigned long arg) | |
1240 | { | |
1241 | int error = 0; | |
1242 | switch (cmd) { | |
1243 | default: | |
53e86317 | 1244 | error = n_tty_ioctl_helper(tty, file, cmd, arg); |
1da177e4 LT |
1245 | break; |
1246 | } | |
1247 | return error; | |
1248 | } | |
1249 | ||
606d099c | 1250 | static void capinc_tty_set_termios(struct tty_struct *tty, struct ktermios * old) |
1da177e4 LT |
1251 | { |
1252 | #ifdef _DEBUG_TTYFUNCS | |
1253 | printk(KERN_DEBUG "capinc_tty_set_termios\n"); | |
1254 | #endif | |
1255 | } | |
1256 | ||
1257 | static void capinc_tty_throttle(struct tty_struct * tty) | |
1258 | { | |
1259 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1260 | #ifdef _DEBUG_TTYFUNCS | |
1261 | printk(KERN_DEBUG "capinc_tty_throttle\n"); | |
1262 | #endif | |
1263 | if (mp) | |
1264 | mp->ttyinstop = 1; | |
1265 | } | |
1266 | ||
1267 | static void capinc_tty_unthrottle(struct tty_struct * tty) | |
1268 | { | |
1269 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
053b47ff | 1270 | unsigned long flags; |
1da177e4 LT |
1271 | #ifdef _DEBUG_TTYFUNCS |
1272 | printk(KERN_DEBUG "capinc_tty_unthrottle\n"); | |
1273 | #endif | |
1274 | if (mp) { | |
053b47ff | 1275 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1276 | mp->ttyinstop = 0; |
1277 | handle_minor_recv(mp); | |
053b47ff | 1278 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1279 | } |
1280 | } | |
1281 | ||
1282 | static void capinc_tty_stop(struct tty_struct *tty) | |
1283 | { | |
1284 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
1285 | #ifdef _DEBUG_TTYFUNCS | |
1286 | printk(KERN_DEBUG "capinc_tty_stop\n"); | |
1287 | #endif | |
1288 | if (mp) { | |
1289 | mp->ttyoutstop = 1; | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | static void capinc_tty_start(struct tty_struct *tty) | |
1294 | { | |
1295 | struct capiminor *mp = (struct capiminor *)tty->driver_data; | |
053b47ff | 1296 | unsigned long flags; |
1da177e4 LT |
1297 | #ifdef _DEBUG_TTYFUNCS |
1298 | printk(KERN_DEBUG "capinc_tty_start\n"); | |
1299 | #endif | |
1300 | if (mp) { | |
053b47ff | 1301 | spin_lock_irqsave(&workaround_lock, flags); |
1da177e4 LT |
1302 | mp->ttyoutstop = 0; |
1303 | (void)handle_minor_send(mp); | |
053b47ff | 1304 | spin_unlock_irqrestore(&workaround_lock, flags); |
1da177e4 LT |
1305 | } |
1306 | } | |
1307 | ||
1308 | static void capinc_tty_hangup(struct tty_struct *tty) | |
1309 | { | |
1310 | #ifdef _DEBUG_TTYFUNCS | |
1311 | printk(KERN_DEBUG "capinc_tty_hangup\n"); | |
1312 | #endif | |
1313 | } | |
1314 | ||
9e98966c | 1315 | static int capinc_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
1316 | { |
1317 | #ifdef _DEBUG_TTYFUNCS | |
1318 | printk(KERN_DEBUG "capinc_tty_break_ctl(%d)\n", state); | |
1319 | #endif | |
9e98966c | 1320 | return 0; |
1da177e4 LT |
1321 | } |
1322 | ||
1323 | static void capinc_tty_flush_buffer(struct tty_struct *tty) | |
1324 | { | |
1325 | #ifdef _DEBUG_TTYFUNCS | |
1326 | printk(KERN_DEBUG "capinc_tty_flush_buffer\n"); | |
1327 | #endif | |
1328 | } | |
1329 | ||
1330 | static void capinc_tty_set_ldisc(struct tty_struct *tty) | |
1331 | { | |
1332 | #ifdef _DEBUG_TTYFUNCS | |
1333 | printk(KERN_DEBUG "capinc_tty_set_ldisc\n"); | |
1334 | #endif | |
1335 | } | |
1336 | ||
1337 | static void capinc_tty_send_xchar(struct tty_struct *tty, char ch) | |
1338 | { | |
1339 | #ifdef _DEBUG_TTYFUNCS | |
1340 | printk(KERN_DEBUG "capinc_tty_send_xchar(%d)\n", ch); | |
1341 | #endif | |
1342 | } | |
1343 | ||
1da177e4 LT |
1344 | static struct tty_driver *capinc_tty_driver; |
1345 | ||
b68e31d0 | 1346 | static const struct tty_operations capinc_ops = { |
1da177e4 LT |
1347 | .open = capinc_tty_open, |
1348 | .close = capinc_tty_close, | |
1349 | .write = capinc_tty_write, | |
1350 | .put_char = capinc_tty_put_char, | |
1351 | .flush_chars = capinc_tty_flush_chars, | |
1352 | .write_room = capinc_tty_write_room, | |
1353 | .chars_in_buffer = capinc_tty_chars_in_buffer, | |
1354 | .ioctl = capinc_tty_ioctl, | |
1355 | .set_termios = capinc_tty_set_termios, | |
1356 | .throttle = capinc_tty_throttle, | |
1357 | .unthrottle = capinc_tty_unthrottle, | |
1358 | .stop = capinc_tty_stop, | |
1359 | .start = capinc_tty_start, | |
1360 | .hangup = capinc_tty_hangup, | |
1361 | .break_ctl = capinc_tty_break_ctl, | |
1362 | .flush_buffer = capinc_tty_flush_buffer, | |
1363 | .set_ldisc = capinc_tty_set_ldisc, | |
1364 | .send_xchar = capinc_tty_send_xchar, | |
1da177e4 LT |
1365 | }; |
1366 | ||
1367 | static int capinc_tty_init(void) | |
1368 | { | |
1369 | struct tty_driver *drv; | |
1370 | ||
1371 | if (capi_ttyminors > CAPINC_MAX_PORTS) | |
1372 | capi_ttyminors = CAPINC_MAX_PORTS; | |
1373 | if (capi_ttyminors <= 0) | |
1374 | capi_ttyminors = CAPINC_NR_PORTS; | |
1375 | ||
1376 | drv = alloc_tty_driver(capi_ttyminors); | |
1377 | if (!drv) | |
1378 | return -ENOMEM; | |
1379 | ||
1380 | drv->owner = THIS_MODULE; | |
1381 | drv->driver_name = "capi_nc"; | |
1da177e4 LT |
1382 | drv->name = "capi"; |
1383 | drv->major = capi_ttymajor; | |
1384 | drv->minor_start = 0; | |
1385 | drv->type = TTY_DRIVER_TYPE_SERIAL; | |
1386 | drv->subtype = SERIAL_TYPE_NORMAL; | |
1387 | drv->init_termios = tty_std_termios; | |
1388 | drv->init_termios.c_iflag = ICRNL; | |
1389 | drv->init_termios.c_oflag = OPOST | ONLCR; | |
1390 | drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
1391 | drv->init_termios.c_lflag = 0; | |
1392 | drv->flags = TTY_DRIVER_REAL_RAW|TTY_DRIVER_RESET_TERMIOS; | |
1393 | tty_set_operations(drv, &capinc_ops); | |
1394 | if (tty_register_driver(drv)) { | |
1395 | put_tty_driver(drv); | |
1396 | printk(KERN_ERR "Couldn't register capi_nc driver\n"); | |
1397 | return -1; | |
1398 | } | |
1399 | capinc_tty_driver = drv; | |
1400 | return 0; | |
1401 | } | |
1402 | ||
1403 | static void capinc_tty_exit(void) | |
1404 | { | |
1405 | struct tty_driver *drv = capinc_tty_driver; | |
1406 | int retval; | |
1407 | if ((retval = tty_unregister_driver(drv))) | |
1408 | printk(KERN_ERR "capi: failed to unregister capi_nc driver (%d)\n", retval); | |
1409 | put_tty_driver(drv); | |
1410 | } | |
1411 | ||
501c87a9 JK |
1412 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ |
1413 | ||
1414 | static inline int capinc_tty_init(void) | |
1415 | { | |
1416 | return 0; | |
1417 | } | |
1418 | ||
1419 | static inline void capinc_tty_exit(void) { } | |
1420 | ||
1421 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ | |
1da177e4 LT |
1422 | |
1423 | /* -------- /proc functions ----------------------------------------- */ | |
1424 | ||
1425 | /* | |
1426 | * /proc/capi/capi20: | |
1427 | * minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt | |
1428 | */ | |
9a58a80a | 1429 | static int capi20_proc_show(struct seq_file *m, void *v) |
1da177e4 LT |
1430 | { |
1431 | struct capidev *cdev; | |
1432 | struct list_head *l; | |
1da177e4 | 1433 | |
b8f433dc | 1434 | mutex_lock(&capidev_list_lock); |
1da177e4 LT |
1435 | list_for_each(l, &capidev_list) { |
1436 | cdev = list_entry(l, struct capidev, list); | |
9a58a80a | 1437 | seq_printf(m, "0 %d %lu %lu %lu %lu\n", |
1da177e4 LT |
1438 | cdev->ap.applid, |
1439 | cdev->ap.nrecvctlpkt, | |
1440 | cdev->ap.nrecvdatapkt, | |
1441 | cdev->ap.nsentctlpkt, | |
1442 | cdev->ap.nsentdatapkt); | |
1da177e4 | 1443 | } |
b8f433dc | 1444 | mutex_unlock(&capidev_list_lock); |
9a58a80a | 1445 | return 0; |
1da177e4 LT |
1446 | } |
1447 | ||
9a58a80a AD |
1448 | static int capi20_proc_open(struct inode *inode, struct file *file) |
1449 | { | |
1450 | return single_open(file, capi20_proc_show, NULL); | |
1451 | } | |
1452 | ||
1453 | static const struct file_operations capi20_proc_fops = { | |
1454 | .owner = THIS_MODULE, | |
1455 | .open = capi20_proc_open, | |
1456 | .read = seq_read, | |
1457 | .llseek = seq_lseek, | |
1458 | .release = single_release, | |
1459 | }; | |
1460 | ||
1da177e4 LT |
1461 | /* |
1462 | * /proc/capi/capi20ncci: | |
1463 | * applid ncci | |
1464 | */ | |
9a58a80a | 1465 | static int capi20ncci_proc_show(struct seq_file *m, void *v) |
1da177e4 LT |
1466 | { |
1467 | struct capidev *cdev; | |
1468 | struct capincci *np; | |
1469 | struct list_head *l; | |
1da177e4 | 1470 | |
b8f433dc | 1471 | mutex_lock(&capidev_list_lock); |
1da177e4 LT |
1472 | list_for_each(l, &capidev_list) { |
1473 | cdev = list_entry(l, struct capidev, list); | |
1474 | for (np=cdev->nccis; np; np = np->next) { | |
9a58a80a | 1475 | seq_printf(m, "%d 0x%x\n", |
1da177e4 LT |
1476 | cdev->ap.applid, |
1477 | np->ncci); | |
1da177e4 LT |
1478 | } |
1479 | } | |
b8f433dc | 1480 | mutex_unlock(&capidev_list_lock); |
9a58a80a | 1481 | return 0; |
1da177e4 LT |
1482 | } |
1483 | ||
9a58a80a AD |
1484 | static int capi20ncci_proc_open(struct inode *inode, struct file *file) |
1485 | { | |
1486 | return single_open(file, capi20ncci_proc_show, NULL); | |
1487 | } | |
1488 | ||
1489 | static const struct file_operations capi20ncci_proc_fops = { | |
1490 | .owner = THIS_MODULE, | |
1491 | .open = capi20ncci_proc_open, | |
1492 | .read = seq_read, | |
1493 | .llseek = seq_lseek, | |
1494 | .release = single_release, | |
1da177e4 LT |
1495 | }; |
1496 | ||
1497 | static void __init proc_init(void) | |
1498 | { | |
9a58a80a AD |
1499 | proc_create("capi/capi20", 0, NULL, &capi20_proc_fops); |
1500 | proc_create("capi/capi20ncci", 0, NULL, &capi20ncci_proc_fops); | |
1da177e4 LT |
1501 | } |
1502 | ||
1503 | static void __exit proc_exit(void) | |
1504 | { | |
9a58a80a AD |
1505 | remove_proc_entry("capi/capi20", NULL); |
1506 | remove_proc_entry("capi/capi20ncci", NULL); | |
1da177e4 LT |
1507 | } |
1508 | ||
1509 | /* -------- init function and module interface ---------------------- */ | |
1510 | ||
1511 | ||
1da177e4 LT |
1512 | static int __init capi_init(void) |
1513 | { | |
88549d6b | 1514 | const char *compileinfo; |
6d9eac34 | 1515 | int major_ret; |
1da177e4 | 1516 | |
6d9eac34 AM |
1517 | major_ret = register_chrdev(capi_major, "capi20", &capi_fops); |
1518 | if (major_ret < 0) { | |
1da177e4 | 1519 | printk(KERN_ERR "capi20: unable to get major %d\n", capi_major); |
6d9eac34 | 1520 | return major_ret; |
1da177e4 | 1521 | } |
56b22935 | 1522 | capi_class = class_create(THIS_MODULE, "capi"); |
1da177e4 LT |
1523 | if (IS_ERR(capi_class)) { |
1524 | unregister_chrdev(capi_major, "capi20"); | |
1525 | return PTR_ERR(capi_class); | |
1526 | } | |
1527 | ||
a9b12619 | 1528 | device_create(capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi"); |
1da177e4 | 1529 | |
1da177e4 | 1530 | if (capinc_tty_init() < 0) { |
d78b0368 | 1531 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
56b22935 | 1532 | class_destroy(capi_class); |
1da177e4 LT |
1533 | unregister_chrdev(capi_major, "capi20"); |
1534 | return -ENOMEM; | |
1535 | } | |
1da177e4 LT |
1536 | |
1537 | proc_init(); | |
1538 | ||
1da177e4 LT |
1539 | #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE) |
1540 | compileinfo = " (middleware+capifs)"; | |
501c87a9 | 1541 | #elif defined(CONFIG_ISDN_CAPI_MIDDLEWARE) |
1da177e4 | 1542 | compileinfo = " (no capifs)"; |
1da177e4 LT |
1543 | #else |
1544 | compileinfo = " (no middleware)"; | |
1545 | #endif | |
88549d6b JK |
1546 | printk(KERN_NOTICE "CAPI 2.0 started up with major %d%s\n", |
1547 | capi_major, compileinfo); | |
1da177e4 LT |
1548 | |
1549 | return 0; | |
1550 | } | |
1551 | ||
1552 | static void __exit capi_exit(void) | |
1553 | { | |
1554 | proc_exit(); | |
1555 | ||
d78b0368 | 1556 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
56b22935 | 1557 | class_destroy(capi_class); |
1da177e4 | 1558 | unregister_chrdev(capi_major, "capi20"); |
1da177e4 | 1559 | |
1da177e4 | 1560 | capinc_tty_exit(); |
1da177e4 LT |
1561 | } |
1562 | ||
1563 | module_init(capi_init); | |
1564 | module_exit(capi_exit); |