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1b2b03f8 KK |
1 | /* |
2 | * | |
3 | * Author Karsten Keil <kkeil@novell.com> | |
4 | * | |
5 | * Copyright 2008 by Karsten Keil <kkeil@novell.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | */ | |
17 | ||
5a0e3ad6 | 18 | #include <linux/slab.h> |
1b2b03f8 KK |
19 | #include <linux/mISDNif.h> |
20 | #include <linux/kthread.h> | |
6fac4829 | 21 | #include <linux/sched.h> |
1b2b03f8 KK |
22 | #include "core.h" |
23 | ||
24 | static u_int *debug; | |
25 | ||
26 | static inline void | |
27 | _queue_message(struct mISDNstack *st, struct sk_buff *skb) | |
28 | { | |
29 | struct mISDNhead *hh = mISDN_HEAD_P(skb); | |
30 | ||
31 | if (*debug & DEBUG_QUEUE_FUNC) | |
32 | printk(KERN_DEBUG "%s prim(%x) id(%x) %p\n", | |
475be4d8 | 33 | __func__, hh->prim, hh->id, skb); |
1b2b03f8 KK |
34 | skb_queue_tail(&st->msgq, skb); |
35 | if (likely(!test_bit(mISDN_STACK_STOPPED, &st->status))) { | |
36 | test_and_set_bit(mISDN_STACK_WORK, &st->status); | |
37 | wake_up_interruptible(&st->workq); | |
38 | } | |
39 | } | |
40 | ||
5b834354 | 41 | static int |
1b2b03f8 KK |
42 | mISDN_queue_message(struct mISDNchannel *ch, struct sk_buff *skb) |
43 | { | |
44 | _queue_message(ch->st, skb); | |
45 | return 0; | |
46 | } | |
47 | ||
48 | static struct mISDNchannel * | |
49 | get_channel4id(struct mISDNstack *st, u_int id) | |
50 | { | |
51 | struct mISDNchannel *ch; | |
52 | ||
53 | mutex_lock(&st->lmutex); | |
54 | list_for_each_entry(ch, &st->layer2, list) { | |
55 | if (id == ch->nr) | |
56 | goto unlock; | |
57 | } | |
58 | ch = NULL; | |
59 | unlock: | |
60 | mutex_unlock(&st->lmutex); | |
61 | return ch; | |
62 | } | |
63 | ||
64 | static void | |
65 | send_socklist(struct mISDN_sock_list *sl, struct sk_buff *skb) | |
66 | { | |
1b2b03f8 KK |
67 | struct sock *sk; |
68 | struct sk_buff *cskb = NULL; | |
69 | ||
70 | read_lock(&sl->lock); | |
b67bfe0d | 71 | sk_for_each(sk, &sl->head) { |
1b2b03f8 KK |
72 | if (sk->sk_state != MISDN_BOUND) |
73 | continue; | |
74 | if (!cskb) | |
75 | cskb = skb_copy(skb, GFP_KERNEL); | |
76 | if (!cskb) { | |
77 | printk(KERN_WARNING "%s no skb\n", __func__); | |
78 | break; | |
79 | } | |
80 | if (!sock_queue_rcv_skb(sk, cskb)) | |
81 | cskb = NULL; | |
82 | } | |
83 | read_unlock(&sl->lock); | |
84 | if (cskb) | |
85 | dev_kfree_skb(cskb); | |
86 | } | |
87 | ||
88 | static void | |
89 | send_layer2(struct mISDNstack *st, struct sk_buff *skb) | |
90 | { | |
91 | struct sk_buff *cskb; | |
92 | struct mISDNhead *hh = mISDN_HEAD_P(skb); | |
93 | struct mISDNchannel *ch; | |
94 | int ret; | |
95 | ||
96 | if (!st) | |
97 | return; | |
98 | mutex_lock(&st->lmutex); | |
99 | if ((hh->id & MISDN_ID_ADDR_MASK) == MISDN_ID_ANY) { /* L2 for all */ | |
100 | list_for_each_entry(ch, &st->layer2, list) { | |
101 | if (list_is_last(&ch->list, &st->layer2)) { | |
102 | cskb = skb; | |
103 | skb = NULL; | |
104 | } else { | |
105 | cskb = skb_copy(skb, GFP_KERNEL); | |
106 | } | |
107 | if (cskb) { | |
108 | ret = ch->send(ch, cskb); | |
109 | if (ret) { | |
110 | if (*debug & DEBUG_SEND_ERR) | |
111 | printk(KERN_DEBUG | |
475be4d8 JP |
112 | "%s ch%d prim(%x) addr(%x)" |
113 | " err %d\n", | |
114 | __func__, ch->nr, | |
115 | hh->prim, ch->addr, ret); | |
1b2b03f8 KK |
116 | dev_kfree_skb(cskb); |
117 | } | |
118 | } else { | |
119 | printk(KERN_WARNING "%s ch%d addr %x no mem\n", | |
475be4d8 | 120 | __func__, ch->nr, ch->addr); |
1b2b03f8 KK |
121 | goto out; |
122 | } | |
123 | } | |
124 | } else { | |
125 | list_for_each_entry(ch, &st->layer2, list) { | |
126 | if ((hh->id & MISDN_ID_ADDR_MASK) == ch->addr) { | |
127 | ret = ch->send(ch, skb); | |
128 | if (!ret) | |
129 | skb = NULL; | |
130 | goto out; | |
131 | } | |
132 | } | |
133 | ret = st->dev->teimgr->ctrl(st->dev->teimgr, CHECK_DATA, skb); | |
134 | if (!ret) | |
135 | skb = NULL; | |
136 | else if (*debug & DEBUG_SEND_ERR) | |
137 | printk(KERN_DEBUG | |
1b9faf5e JL |
138 | "%s mgr prim(%x) err %d\n", |
139 | __func__, hh->prim, ret); | |
1b2b03f8 KK |
140 | } |
141 | out: | |
142 | mutex_unlock(&st->lmutex); | |
143 | if (skb) | |
144 | dev_kfree_skb(skb); | |
145 | } | |
146 | ||
147 | static inline int | |
148 | send_msg_to_layer(struct mISDNstack *st, struct sk_buff *skb) | |
149 | { | |
150 | struct mISDNhead *hh = mISDN_HEAD_P(skb); | |
151 | struct mISDNchannel *ch; | |
152 | int lm; | |
153 | ||
154 | lm = hh->prim & MISDN_LAYERMASK; | |
155 | if (*debug & DEBUG_QUEUE_FUNC) | |
156 | printk(KERN_DEBUG "%s prim(%x) id(%x) %p\n", | |
475be4d8 | 157 | __func__, hh->prim, hh->id, skb); |
1b2b03f8 KK |
158 | if (lm == 0x1) { |
159 | if (!hlist_empty(&st->l1sock.head)) { | |
160 | __net_timestamp(skb); | |
161 | send_socklist(&st->l1sock, skb); | |
162 | } | |
163 | return st->layer1->send(st->layer1, skb); | |
164 | } else if (lm == 0x2) { | |
165 | if (!hlist_empty(&st->l1sock.head)) | |
166 | send_socklist(&st->l1sock, skb); | |
167 | send_layer2(st, skb); | |
168 | return 0; | |
169 | } else if (lm == 0x4) { | |
170 | ch = get_channel4id(st, hh->id); | |
171 | if (ch) | |
172 | return ch->send(ch, skb); | |
173 | else | |
174 | printk(KERN_WARNING | |
475be4d8 JP |
175 | "%s: dev(%s) prim(%x) id(%x) no channel\n", |
176 | __func__, dev_name(&st->dev->dev), hh->prim, | |
177 | hh->id); | |
1b2b03f8 KK |
178 | } else if (lm == 0x8) { |
179 | WARN_ON(lm == 0x8); | |
180 | ch = get_channel4id(st, hh->id); | |
181 | if (ch) | |
182 | return ch->send(ch, skb); | |
183 | else | |
184 | printk(KERN_WARNING | |
475be4d8 JP |
185 | "%s: dev(%s) prim(%x) id(%x) no channel\n", |
186 | __func__, dev_name(&st->dev->dev), hh->prim, | |
187 | hh->id); | |
1b2b03f8 KK |
188 | } else { |
189 | /* broadcast not handled yet */ | |
190 | printk(KERN_WARNING "%s: dev(%s) prim %x not delivered\n", | |
475be4d8 | 191 | __func__, dev_name(&st->dev->dev), hh->prim); |
1b2b03f8 KK |
192 | } |
193 | return -ESRCH; | |
194 | } | |
195 | ||
196 | static void | |
197 | do_clear_stack(struct mISDNstack *st) | |
198 | { | |
199 | } | |
200 | ||
201 | static int | |
202 | mISDNStackd(void *data) | |
203 | { | |
204 | struct mISDNstack *st = data; | |
6fac4829 FW |
205 | #ifdef MISDN_MSG_STATS |
206 | cputime_t utime, stime; | |
207 | #endif | |
1b2b03f8 KK |
208 | int err = 0; |
209 | ||
1b2b03f8 | 210 | sigfillset(¤t->blocked); |
1b2b03f8 | 211 | if (*debug & DEBUG_MSG_THREAD) |
837468d1 | 212 | printk(KERN_DEBUG "mISDNStackd %s started\n", |
475be4d8 | 213 | dev_name(&st->dev->dev)); |
1b2b03f8 KK |
214 | |
215 | if (st->notify != NULL) { | |
216 | complete(st->notify); | |
217 | st->notify = NULL; | |
218 | } | |
219 | ||
220 | for (;;) { | |
221 | struct sk_buff *skb; | |
222 | ||
223 | if (unlikely(test_bit(mISDN_STACK_STOPPED, &st->status))) { | |
224 | test_and_clear_bit(mISDN_STACK_WORK, &st->status); | |
225 | test_and_clear_bit(mISDN_STACK_RUNNING, &st->status); | |
226 | } else | |
227 | test_and_set_bit(mISDN_STACK_RUNNING, &st->status); | |
228 | while (test_bit(mISDN_STACK_WORK, &st->status)) { | |
229 | skb = skb_dequeue(&st->msgq); | |
230 | if (!skb) { | |
231 | test_and_clear_bit(mISDN_STACK_WORK, | |
475be4d8 | 232 | &st->status); |
1b2b03f8 KK |
233 | /* test if a race happens */ |
234 | skb = skb_dequeue(&st->msgq); | |
235 | if (!skb) | |
236 | continue; | |
237 | test_and_set_bit(mISDN_STACK_WORK, | |
475be4d8 | 238 | &st->status); |
1b2b03f8 KK |
239 | } |
240 | #ifdef MISDN_MSG_STATS | |
241 | st->msg_cnt++; | |
242 | #endif | |
243 | err = send_msg_to_layer(st, skb); | |
244 | if (unlikely(err)) { | |
245 | if (*debug & DEBUG_SEND_ERR) | |
246 | printk(KERN_DEBUG | |
475be4d8 JP |
247 | "%s: %s prim(%x) id(%x) " |
248 | "send call(%d)\n", | |
249 | __func__, dev_name(&st->dev->dev), | |
250 | mISDN_HEAD_PRIM(skb), | |
251 | mISDN_HEAD_ID(skb), err); | |
1b2b03f8 KK |
252 | dev_kfree_skb(skb); |
253 | continue; | |
254 | } | |
255 | if (unlikely(test_bit(mISDN_STACK_STOPPED, | |
475be4d8 | 256 | &st->status))) { |
1b2b03f8 | 257 | test_and_clear_bit(mISDN_STACK_WORK, |
475be4d8 | 258 | &st->status); |
1b2b03f8 | 259 | test_and_clear_bit(mISDN_STACK_RUNNING, |
475be4d8 | 260 | &st->status); |
1b2b03f8 KK |
261 | break; |
262 | } | |
263 | } | |
264 | if (test_bit(mISDN_STACK_CLEARING, &st->status)) { | |
265 | test_and_set_bit(mISDN_STACK_STOPPED, &st->status); | |
266 | test_and_clear_bit(mISDN_STACK_RUNNING, &st->status); | |
267 | do_clear_stack(st); | |
268 | test_and_clear_bit(mISDN_STACK_CLEARING, &st->status); | |
269 | test_and_set_bit(mISDN_STACK_RESTART, &st->status); | |
270 | } | |
271 | if (test_and_clear_bit(mISDN_STACK_RESTART, &st->status)) { | |
272 | test_and_clear_bit(mISDN_STACK_STOPPED, &st->status); | |
273 | test_and_set_bit(mISDN_STACK_RUNNING, &st->status); | |
274 | if (!skb_queue_empty(&st->msgq)) | |
275 | test_and_set_bit(mISDN_STACK_WORK, | |
475be4d8 | 276 | &st->status); |
1b2b03f8 KK |
277 | } |
278 | if (test_bit(mISDN_STACK_ABORT, &st->status)) | |
279 | break; | |
280 | if (st->notify != NULL) { | |
281 | complete(st->notify); | |
282 | st->notify = NULL; | |
283 | } | |
284 | #ifdef MISDN_MSG_STATS | |
285 | st->sleep_cnt++; | |
286 | #endif | |
287 | test_and_clear_bit(mISDN_STACK_ACTIVE, &st->status); | |
288 | wait_event_interruptible(st->workq, (st->status & | |
475be4d8 | 289 | mISDN_STACK_ACTION_MASK)); |
1b2b03f8 KK |
290 | if (*debug & DEBUG_MSG_THREAD) |
291 | printk(KERN_DEBUG "%s: %s wake status %08lx\n", | |
475be4d8 | 292 | __func__, dev_name(&st->dev->dev), st->status); |
1b2b03f8 KK |
293 | test_and_set_bit(mISDN_STACK_ACTIVE, &st->status); |
294 | ||
295 | test_and_clear_bit(mISDN_STACK_WAKEUP, &st->status); | |
296 | ||
297 | if (test_bit(mISDN_STACK_STOPPED, &st->status)) { | |
298 | test_and_clear_bit(mISDN_STACK_RUNNING, &st->status); | |
299 | #ifdef MISDN_MSG_STATS | |
300 | st->stopped_cnt++; | |
301 | #endif | |
302 | } | |
303 | } | |
304 | #ifdef MISDN_MSG_STATS | |
305 | printk(KERN_DEBUG "mISDNStackd daemon for %s proceed %d " | |
475be4d8 JP |
306 | "msg %d sleep %d stopped\n", |
307 | dev_name(&st->dev->dev), st->msg_cnt, st->sleep_cnt, | |
308 | st->stopped_cnt); | |
6fac4829 | 309 | task_cputime(st->thread, &utime, &stime); |
1b2b03f8 | 310 | printk(KERN_DEBUG |
475be4d8 | 311 | "mISDNStackd daemon for %s utime(%ld) stime(%ld)\n", |
6fac4829 | 312 | dev_name(&st->dev->dev), utime, stime); |
1b2b03f8 | 313 | printk(KERN_DEBUG |
475be4d8 JP |
314 | "mISDNStackd daemon for %s nvcsw(%ld) nivcsw(%ld)\n", |
315 | dev_name(&st->dev->dev), st->thread->nvcsw, st->thread->nivcsw); | |
1b2b03f8 | 316 | printk(KERN_DEBUG "mISDNStackd daemon for %s killed now\n", |
475be4d8 | 317 | dev_name(&st->dev->dev)); |
1b2b03f8 KK |
318 | #endif |
319 | test_and_set_bit(mISDN_STACK_KILLED, &st->status); | |
320 | test_and_clear_bit(mISDN_STACK_RUNNING, &st->status); | |
321 | test_and_clear_bit(mISDN_STACK_ACTIVE, &st->status); | |
322 | test_and_clear_bit(mISDN_STACK_ABORT, &st->status); | |
323 | skb_queue_purge(&st->msgq); | |
324 | st->thread = NULL; | |
325 | if (st->notify != NULL) { | |
326 | complete(st->notify); | |
327 | st->notify = NULL; | |
328 | } | |
329 | return 0; | |
330 | } | |
331 | ||
332 | static int | |
333 | l1_receive(struct mISDNchannel *ch, struct sk_buff *skb) | |
334 | { | |
335 | if (!ch->st) | |
336 | return -ENODEV; | |
337 | __net_timestamp(skb); | |
338 | _queue_message(ch->st, skb); | |
339 | return 0; | |
340 | } | |
341 | ||
342 | void | |
343 | set_channel_address(struct mISDNchannel *ch, u_int sapi, u_int tei) | |
344 | { | |
345 | ch->addr = sapi | (tei << 8); | |
346 | } | |
347 | ||
348 | void | |
349 | __add_layer2(struct mISDNchannel *ch, struct mISDNstack *st) | |
350 | { | |
351 | list_add_tail(&ch->list, &st->layer2); | |
352 | } | |
353 | ||
354 | void | |
355 | add_layer2(struct mISDNchannel *ch, struct mISDNstack *st) | |
356 | { | |
357 | mutex_lock(&st->lmutex); | |
358 | __add_layer2(ch, st); | |
359 | mutex_unlock(&st->lmutex); | |
360 | } | |
361 | ||
362 | static int | |
363 | st_own_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg) | |
364 | { | |
08cb3f60 | 365 | if (!ch->st || !ch->st->layer1) |
1b2b03f8 KK |
366 | return -EINVAL; |
367 | return ch->st->layer1->ctrl(ch->st->layer1, cmd, arg); | |
368 | } | |
369 | ||
370 | int | |
371 | create_stack(struct mISDNdevice *dev) | |
372 | { | |
373 | struct mISDNstack *newst; | |
374 | int err; | |
375 | DECLARE_COMPLETION_ONSTACK(done); | |
376 | ||
377 | newst = kzalloc(sizeof(struct mISDNstack), GFP_KERNEL); | |
378 | if (!newst) { | |
379 | printk(KERN_ERR "kmalloc mISDN_stack failed\n"); | |
380 | return -ENOMEM; | |
381 | } | |
382 | newst->dev = dev; | |
383 | INIT_LIST_HEAD(&newst->layer2); | |
384 | INIT_HLIST_HEAD(&newst->l1sock.head); | |
385 | rwlock_init(&newst->l1sock.lock); | |
386 | init_waitqueue_head(&newst->workq); | |
387 | skb_queue_head_init(&newst->msgq); | |
388 | mutex_init(&newst->lmutex); | |
389 | dev->D.st = newst; | |
390 | err = create_teimanager(dev); | |
391 | if (err) { | |
392 | printk(KERN_ERR "kmalloc teimanager failed\n"); | |
393 | kfree(newst); | |
394 | return err; | |
395 | } | |
396 | dev->teimgr->peer = &newst->own; | |
397 | dev->teimgr->recv = mISDN_queue_message; | |
398 | dev->teimgr->st = newst; | |
399 | newst->layer1 = &dev->D; | |
400 | dev->D.recv = l1_receive; | |
401 | dev->D.peer = &newst->own; | |
402 | newst->own.st = newst; | |
403 | newst->own.ctrl = st_own_ctrl; | |
404 | newst->own.send = mISDN_queue_message; | |
405 | newst->own.recv = mISDN_queue_message; | |
406 | if (*debug & DEBUG_CORE_FUNC) | |
837468d1 | 407 | printk(KERN_DEBUG "%s: st(%s)\n", __func__, |
475be4d8 | 408 | dev_name(&newst->dev->dev)); |
1b2b03f8 KK |
409 | newst->notify = &done; |
410 | newst->thread = kthread_run(mISDNStackd, (void *)newst, "mISDN_%s", | |
475be4d8 | 411 | dev_name(&newst->dev->dev)); |
1b2b03f8 KK |
412 | if (IS_ERR(newst->thread)) { |
413 | err = PTR_ERR(newst->thread); | |
414 | printk(KERN_ERR | |
475be4d8 JP |
415 | "mISDN:cannot create kernel thread for %s (%d)\n", |
416 | dev_name(&newst->dev->dev), err); | |
1b2b03f8 KK |
417 | delete_teimanager(dev->teimgr); |
418 | kfree(newst); | |
419 | } else | |
420 | wait_for_completion(&done); | |
421 | return err; | |
422 | } | |
423 | ||
424 | int | |
425 | connect_layer1(struct mISDNdevice *dev, struct mISDNchannel *ch, | |
475be4d8 | 426 | u_int protocol, struct sockaddr_mISDN *adr) |
1b2b03f8 KK |
427 | { |
428 | struct mISDN_sock *msk = container_of(ch, struct mISDN_sock, ch); | |
429 | struct channel_req rq; | |
430 | int err; | |
431 | ||
432 | ||
433 | if (*debug & DEBUG_CORE_FUNC) | |
434 | printk(KERN_DEBUG "%s: %s proto(%x) adr(%d %d %d %d)\n", | |
475be4d8 JP |
435 | __func__, dev_name(&dev->dev), protocol, adr->dev, |
436 | adr->channel, adr->sapi, adr->tei); | |
1b2b03f8 KK |
437 | switch (protocol) { |
438 | case ISDN_P_NT_S0: | |
439 | case ISDN_P_NT_E1: | |
440 | case ISDN_P_TE_S0: | |
441 | case ISDN_P_TE_E1: | |
1b2b03f8 KK |
442 | ch->recv = mISDN_queue_message; |
443 | ch->peer = &dev->D.st->own; | |
444 | ch->st = dev->D.st; | |
445 | rq.protocol = protocol; | |
1f28fa19 | 446 | rq.adr.channel = adr->channel; |
1b2b03f8 | 447 | err = dev->D.ctrl(&dev->D, OPEN_CHANNEL, &rq); |
9a812553 | 448 | printk(KERN_DEBUG "%s: ret %d (dev %d)\n", __func__, err, |
475be4d8 | 449 | dev->id); |
1b2b03f8 KK |
450 | if (err) |
451 | return err; | |
452 | write_lock_bh(&dev->D.st->l1sock.lock); | |
453 | sk_add_node(&msk->sk, &dev->D.st->l1sock.head); | |
454 | write_unlock_bh(&dev->D.st->l1sock.lock); | |
455 | break; | |
456 | default: | |
457 | return -ENOPROTOOPT; | |
458 | } | |
459 | return 0; | |
460 | } | |
461 | ||
462 | int | |
463 | connect_Bstack(struct mISDNdevice *dev, struct mISDNchannel *ch, | |
475be4d8 | 464 | u_int protocol, struct sockaddr_mISDN *adr) |
1b2b03f8 KK |
465 | { |
466 | struct channel_req rq, rq2; | |
467 | int pmask, err; | |
468 | struct Bprotocol *bp; | |
469 | ||
470 | if (*debug & DEBUG_CORE_FUNC) | |
471 | printk(KERN_DEBUG "%s: %s proto(%x) adr(%d %d %d %d)\n", | |
475be4d8 JP |
472 | __func__, dev_name(&dev->dev), protocol, |
473 | adr->dev, adr->channel, adr->sapi, | |
474 | adr->tei); | |
1b2b03f8 KK |
475 | ch->st = dev->D.st; |
476 | pmask = 1 << (protocol & ISDN_P_B_MASK); | |
477 | if (pmask & dev->Bprotocols) { | |
478 | rq.protocol = protocol; | |
479 | rq.adr = *adr; | |
480 | err = dev->D.ctrl(&dev->D, OPEN_CHANNEL, &rq); | |
481 | if (err) | |
482 | return err; | |
483 | ch->recv = rq.ch->send; | |
484 | ch->peer = rq.ch; | |
485 | rq.ch->recv = ch->send; | |
486 | rq.ch->peer = ch; | |
487 | rq.ch->st = dev->D.st; | |
488 | } else { | |
489 | bp = get_Bprotocol4mask(pmask); | |
490 | if (!bp) | |
491 | return -ENOPROTOOPT; | |
492 | rq2.protocol = protocol; | |
493 | rq2.adr = *adr; | |
494 | rq2.ch = ch; | |
495 | err = bp->create(&rq2); | |
496 | if (err) | |
497 | return err; | |
498 | ch->recv = rq2.ch->send; | |
499 | ch->peer = rq2.ch; | |
500 | rq2.ch->st = dev->D.st; | |
501 | rq.protocol = rq2.protocol; | |
502 | rq.adr = *adr; | |
503 | err = dev->D.ctrl(&dev->D, OPEN_CHANNEL, &rq); | |
504 | if (err) { | |
505 | rq2.ch->ctrl(rq2.ch, CLOSE_CHANNEL, NULL); | |
506 | return err; | |
507 | } | |
508 | rq2.ch->recv = rq.ch->send; | |
509 | rq2.ch->peer = rq.ch; | |
510 | rq.ch->recv = rq2.ch->send; | |
511 | rq.ch->peer = rq2.ch; | |
512 | rq.ch->st = dev->D.st; | |
513 | } | |
514 | ch->protocol = protocol; | |
515 | ch->nr = rq.ch->nr; | |
516 | return 0; | |
517 | } | |
518 | ||
519 | int | |
520 | create_l2entity(struct mISDNdevice *dev, struct mISDNchannel *ch, | |
475be4d8 | 521 | u_int protocol, struct sockaddr_mISDN *adr) |
1b2b03f8 KK |
522 | { |
523 | struct channel_req rq; | |
524 | int err; | |
525 | ||
526 | if (*debug & DEBUG_CORE_FUNC) | |
527 | printk(KERN_DEBUG "%s: %s proto(%x) adr(%d %d %d %d)\n", | |
475be4d8 JP |
528 | __func__, dev_name(&dev->dev), protocol, |
529 | adr->dev, adr->channel, adr->sapi, | |
530 | adr->tei); | |
1b2b03f8 KK |
531 | rq.protocol = ISDN_P_TE_S0; |
532 | if (dev->Dprotocols & (1 << ISDN_P_TE_E1)) | |
533 | rq.protocol = ISDN_P_TE_E1; | |
534 | switch (protocol) { | |
535 | case ISDN_P_LAPD_NT: | |
536 | rq.protocol = ISDN_P_NT_S0; | |
537 | if (dev->Dprotocols & (1 << ISDN_P_NT_E1)) | |
538 | rq.protocol = ISDN_P_NT_E1; | |
539 | case ISDN_P_LAPD_TE: | |
1b2b03f8 KK |
540 | ch->recv = mISDN_queue_message; |
541 | ch->peer = &dev->D.st->own; | |
542 | ch->st = dev->D.st; | |
543 | rq.adr.channel = 0; | |
544 | err = dev->D.ctrl(&dev->D, OPEN_CHANNEL, &rq); | |
545 | printk(KERN_DEBUG "%s: ret 1 %d\n", __func__, err); | |
546 | if (err) | |
547 | break; | |
548 | rq.protocol = protocol; | |
549 | rq.adr = *adr; | |
550 | rq.ch = ch; | |
551 | err = dev->teimgr->ctrl(dev->teimgr, OPEN_CHANNEL, &rq); | |
552 | printk(KERN_DEBUG "%s: ret 2 %d\n", __func__, err); | |
553 | if (!err) { | |
554 | if ((protocol == ISDN_P_LAPD_NT) && !rq.ch) | |
555 | break; | |
556 | add_layer2(rq.ch, dev->D.st); | |
557 | rq.ch->recv = mISDN_queue_message; | |
558 | rq.ch->peer = &dev->D.st->own; | |
559 | rq.ch->ctrl(rq.ch, OPEN_CHANNEL, NULL); /* can't fail */ | |
560 | } | |
561 | break; | |
562 | default: | |
563 | err = -EPROTONOSUPPORT; | |
564 | } | |
565 | return err; | |
566 | } | |
567 | ||
568 | void | |
569 | delete_channel(struct mISDNchannel *ch) | |
570 | { | |
571 | struct mISDN_sock *msk = container_of(ch, struct mISDN_sock, ch); | |
572 | struct mISDNchannel *pch; | |
573 | ||
574 | if (!ch->st) { | |
575 | printk(KERN_WARNING "%s: no stack\n", __func__); | |
576 | return; | |
577 | } | |
578 | if (*debug & DEBUG_CORE_FUNC) | |
579 | printk(KERN_DEBUG "%s: st(%s) protocol(%x)\n", __func__, | |
475be4d8 | 580 | dev_name(&ch->st->dev->dev), ch->protocol); |
1b2b03f8 KK |
581 | if (ch->protocol >= ISDN_P_B_START) { |
582 | if (ch->peer) { | |
583 | ch->peer->ctrl(ch->peer, CLOSE_CHANNEL, NULL); | |
584 | ch->peer = NULL; | |
585 | } | |
586 | return; | |
587 | } | |
588 | switch (ch->protocol) { | |
589 | case ISDN_P_NT_S0: | |
590 | case ISDN_P_TE_S0: | |
591 | case ISDN_P_NT_E1: | |
592 | case ISDN_P_TE_E1: | |
593 | write_lock_bh(&ch->st->l1sock.lock); | |
594 | sk_del_node_init(&msk->sk); | |
595 | write_unlock_bh(&ch->st->l1sock.lock); | |
596 | ch->st->dev->D.ctrl(&ch->st->dev->D, CLOSE_CHANNEL, NULL); | |
597 | break; | |
598 | case ISDN_P_LAPD_TE: | |
599 | pch = get_channel4id(ch->st, ch->nr); | |
600 | if (pch) { | |
601 | mutex_lock(&ch->st->lmutex); | |
602 | list_del(&pch->list); | |
603 | mutex_unlock(&ch->st->lmutex); | |
604 | pch->ctrl(pch, CLOSE_CHANNEL, NULL); | |
605 | pch = ch->st->dev->teimgr; | |
606 | pch->ctrl(pch, CLOSE_CHANNEL, NULL); | |
607 | } else | |
608 | printk(KERN_WARNING "%s: no l2 channel\n", | |
475be4d8 | 609 | __func__); |
1b2b03f8 KK |
610 | break; |
611 | case ISDN_P_LAPD_NT: | |
612 | pch = ch->st->dev->teimgr; | |
613 | if (pch) { | |
614 | pch->ctrl(pch, CLOSE_CHANNEL, NULL); | |
615 | } else | |
616 | printk(KERN_WARNING "%s: no l2 channel\n", | |
475be4d8 | 617 | __func__); |
1b2b03f8 KK |
618 | break; |
619 | default: | |
620 | break; | |
621 | } | |
622 | return; | |
623 | } | |
624 | ||
625 | void | |
626 | delete_stack(struct mISDNdevice *dev) | |
627 | { | |
628 | struct mISDNstack *st = dev->D.st; | |
629 | DECLARE_COMPLETION_ONSTACK(done); | |
630 | ||
631 | if (*debug & DEBUG_CORE_FUNC) | |
632 | printk(KERN_DEBUG "%s: st(%s)\n", __func__, | |
475be4d8 | 633 | dev_name(&st->dev->dev)); |
1b2b03f8 KK |
634 | if (dev->teimgr) |
635 | delete_teimanager(dev->teimgr); | |
636 | if (st->thread) { | |
637 | if (st->notify) { | |
638 | printk(KERN_WARNING "%s: notifier in use\n", | |
475be4d8 JP |
639 | __func__); |
640 | complete(st->notify); | |
1b2b03f8 KK |
641 | } |
642 | st->notify = &done; | |
643 | test_and_set_bit(mISDN_STACK_ABORT, &st->status); | |
644 | test_and_set_bit(mISDN_STACK_WAKEUP, &st->status); | |
645 | wake_up_interruptible(&st->workq); | |
646 | wait_for_completion(&done); | |
647 | } | |
648 | if (!list_empty(&st->layer2)) | |
649 | printk(KERN_WARNING "%s: layer2 list not empty\n", | |
475be4d8 | 650 | __func__); |
1b2b03f8 KK |
651 | if (!hlist_empty(&st->l1sock.head)) |
652 | printk(KERN_WARNING "%s: layer1 list not empty\n", | |
475be4d8 | 653 | __func__); |
1b2b03f8 KK |
654 | kfree(st); |
655 | } | |
656 | ||
657 | void | |
658 | mISDN_initstack(u_int *dp) | |
659 | { | |
660 | debug = dp; | |
661 | } |