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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> | |
21 | #include "core.h" | |
22 | ||
23 | static u_int *debug; | |
24 | ||
25 | static inline void | |
26 | _queue_message(struct mISDNstack *st, struct sk_buff *skb) | |
27 | { | |
28 | struct mISDNhead *hh = mISDN_HEAD_P(skb); | |
29 | ||
30 | if (*debug & DEBUG_QUEUE_FUNC) | |
31 | printk(KERN_DEBUG "%s prim(%x) id(%x) %p\n", | |
475be4d8 | 32 | __func__, hh->prim, hh->id, skb); |
1b2b03f8 KK |
33 | skb_queue_tail(&st->msgq, skb); |
34 | if (likely(!test_bit(mISDN_STACK_STOPPED, &st->status))) { | |
35 | test_and_set_bit(mISDN_STACK_WORK, &st->status); | |
36 | wake_up_interruptible(&st->workq); | |
37 | } | |
38 | } | |
39 | ||
5b834354 | 40 | static int |
1b2b03f8 KK |
41 | mISDN_queue_message(struct mISDNchannel *ch, struct sk_buff *skb) |
42 | { | |
43 | _queue_message(ch->st, skb); | |
44 | return 0; | |
45 | } | |
46 | ||
47 | static struct mISDNchannel * | |
48 | get_channel4id(struct mISDNstack *st, u_int id) | |
49 | { | |
50 | struct mISDNchannel *ch; | |
51 | ||
52 | mutex_lock(&st->lmutex); | |
53 | list_for_each_entry(ch, &st->layer2, list) { | |
54 | if (id == ch->nr) | |
55 | goto unlock; | |
56 | } | |
57 | ch = NULL; | |
58 | unlock: | |
59 | mutex_unlock(&st->lmutex); | |
60 | return ch; | |
61 | } | |
62 | ||
63 | static void | |
64 | send_socklist(struct mISDN_sock_list *sl, struct sk_buff *skb) | |
65 | { | |
66 | struct hlist_node *node; | |
67 | struct sock *sk; | |
68 | struct sk_buff *cskb = NULL; | |
69 | ||
70 | read_lock(&sl->lock); | |
71 | sk_for_each(sk, node, &sl->head) { | |
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; | |
205 | int err = 0; | |
206 | ||
1b2b03f8 | 207 | sigfillset(¤t->blocked); |
1b2b03f8 | 208 | if (*debug & DEBUG_MSG_THREAD) |
837468d1 | 209 | printk(KERN_DEBUG "mISDNStackd %s started\n", |
475be4d8 | 210 | dev_name(&st->dev->dev)); |
1b2b03f8 KK |
211 | |
212 | if (st->notify != NULL) { | |
213 | complete(st->notify); | |
214 | st->notify = NULL; | |
215 | } | |
216 | ||
217 | for (;;) { | |
218 | struct sk_buff *skb; | |
219 | ||
220 | if (unlikely(test_bit(mISDN_STACK_STOPPED, &st->status))) { | |
221 | test_and_clear_bit(mISDN_STACK_WORK, &st->status); | |
222 | test_and_clear_bit(mISDN_STACK_RUNNING, &st->status); | |
223 | } else | |
224 | test_and_set_bit(mISDN_STACK_RUNNING, &st->status); | |
225 | while (test_bit(mISDN_STACK_WORK, &st->status)) { | |
226 | skb = skb_dequeue(&st->msgq); | |
227 | if (!skb) { | |
228 | test_and_clear_bit(mISDN_STACK_WORK, | |
475be4d8 | 229 | &st->status); |
1b2b03f8 KK |
230 | /* test if a race happens */ |
231 | skb = skb_dequeue(&st->msgq); | |
232 | if (!skb) | |
233 | continue; | |
234 | test_and_set_bit(mISDN_STACK_WORK, | |
475be4d8 | 235 | &st->status); |
1b2b03f8 KK |
236 | } |
237 | #ifdef MISDN_MSG_STATS | |
238 | st->msg_cnt++; | |
239 | #endif | |
240 | err = send_msg_to_layer(st, skb); | |
241 | if (unlikely(err)) { | |
242 | if (*debug & DEBUG_SEND_ERR) | |
243 | printk(KERN_DEBUG | |
475be4d8 JP |
244 | "%s: %s prim(%x) id(%x) " |
245 | "send call(%d)\n", | |
246 | __func__, dev_name(&st->dev->dev), | |
247 | mISDN_HEAD_PRIM(skb), | |
248 | mISDN_HEAD_ID(skb), err); | |
1b2b03f8 KK |
249 | dev_kfree_skb(skb); |
250 | continue; | |
251 | } | |
252 | if (unlikely(test_bit(mISDN_STACK_STOPPED, | |
475be4d8 | 253 | &st->status))) { |
1b2b03f8 | 254 | test_and_clear_bit(mISDN_STACK_WORK, |
475be4d8 | 255 | &st->status); |
1b2b03f8 | 256 | test_and_clear_bit(mISDN_STACK_RUNNING, |
475be4d8 | 257 | &st->status); |
1b2b03f8 KK |
258 | break; |
259 | } | |
260 | } | |
261 | if (test_bit(mISDN_STACK_CLEARING, &st->status)) { | |
262 | test_and_set_bit(mISDN_STACK_STOPPED, &st->status); | |
263 | test_and_clear_bit(mISDN_STACK_RUNNING, &st->status); | |
264 | do_clear_stack(st); | |
265 | test_and_clear_bit(mISDN_STACK_CLEARING, &st->status); | |
266 | test_and_set_bit(mISDN_STACK_RESTART, &st->status); | |
267 | } | |
268 | if (test_and_clear_bit(mISDN_STACK_RESTART, &st->status)) { | |
269 | test_and_clear_bit(mISDN_STACK_STOPPED, &st->status); | |
270 | test_and_set_bit(mISDN_STACK_RUNNING, &st->status); | |
271 | if (!skb_queue_empty(&st->msgq)) | |
272 | test_and_set_bit(mISDN_STACK_WORK, | |
475be4d8 | 273 | &st->status); |
1b2b03f8 KK |
274 | } |
275 | if (test_bit(mISDN_STACK_ABORT, &st->status)) | |
276 | break; | |
277 | if (st->notify != NULL) { | |
278 | complete(st->notify); | |
279 | st->notify = NULL; | |
280 | } | |
281 | #ifdef MISDN_MSG_STATS | |
282 | st->sleep_cnt++; | |
283 | #endif | |
284 | test_and_clear_bit(mISDN_STACK_ACTIVE, &st->status); | |
285 | wait_event_interruptible(st->workq, (st->status & | |
475be4d8 | 286 | mISDN_STACK_ACTION_MASK)); |
1b2b03f8 KK |
287 | if (*debug & DEBUG_MSG_THREAD) |
288 | printk(KERN_DEBUG "%s: %s wake status %08lx\n", | |
475be4d8 | 289 | __func__, dev_name(&st->dev->dev), st->status); |
1b2b03f8 KK |
290 | test_and_set_bit(mISDN_STACK_ACTIVE, &st->status); |
291 | ||
292 | test_and_clear_bit(mISDN_STACK_WAKEUP, &st->status); | |
293 | ||
294 | if (test_bit(mISDN_STACK_STOPPED, &st->status)) { | |
295 | test_and_clear_bit(mISDN_STACK_RUNNING, &st->status); | |
296 | #ifdef MISDN_MSG_STATS | |
297 | st->stopped_cnt++; | |
298 | #endif | |
299 | } | |
300 | } | |
301 | #ifdef MISDN_MSG_STATS | |
302 | printk(KERN_DEBUG "mISDNStackd daemon for %s proceed %d " | |
475be4d8 JP |
303 | "msg %d sleep %d stopped\n", |
304 | dev_name(&st->dev->dev), st->msg_cnt, st->sleep_cnt, | |
305 | st->stopped_cnt); | |
1b2b03f8 | 306 | printk(KERN_DEBUG |
475be4d8 JP |
307 | "mISDNStackd daemon for %s utime(%ld) stime(%ld)\n", |
308 | dev_name(&st->dev->dev), st->thread->utime, st->thread->stime); | |
1b2b03f8 | 309 | printk(KERN_DEBUG |
475be4d8 JP |
310 | "mISDNStackd daemon for %s nvcsw(%ld) nivcsw(%ld)\n", |
311 | dev_name(&st->dev->dev), st->thread->nvcsw, st->thread->nivcsw); | |
1b2b03f8 | 312 | printk(KERN_DEBUG "mISDNStackd daemon for %s killed now\n", |
475be4d8 | 313 | dev_name(&st->dev->dev)); |
1b2b03f8 KK |
314 | #endif |
315 | test_and_set_bit(mISDN_STACK_KILLED, &st->status); | |
316 | test_and_clear_bit(mISDN_STACK_RUNNING, &st->status); | |
317 | test_and_clear_bit(mISDN_STACK_ACTIVE, &st->status); | |
318 | test_and_clear_bit(mISDN_STACK_ABORT, &st->status); | |
319 | skb_queue_purge(&st->msgq); | |
320 | st->thread = NULL; | |
321 | if (st->notify != NULL) { | |
322 | complete(st->notify); | |
323 | st->notify = NULL; | |
324 | } | |
325 | return 0; | |
326 | } | |
327 | ||
328 | static int | |
329 | l1_receive(struct mISDNchannel *ch, struct sk_buff *skb) | |
330 | { | |
331 | if (!ch->st) | |
332 | return -ENODEV; | |
333 | __net_timestamp(skb); | |
334 | _queue_message(ch->st, skb); | |
335 | return 0; | |
336 | } | |
337 | ||
338 | void | |
339 | set_channel_address(struct mISDNchannel *ch, u_int sapi, u_int tei) | |
340 | { | |
341 | ch->addr = sapi | (tei << 8); | |
342 | } | |
343 | ||
344 | void | |
345 | __add_layer2(struct mISDNchannel *ch, struct mISDNstack *st) | |
346 | { | |
347 | list_add_tail(&ch->list, &st->layer2); | |
348 | } | |
349 | ||
350 | void | |
351 | add_layer2(struct mISDNchannel *ch, struct mISDNstack *st) | |
352 | { | |
353 | mutex_lock(&st->lmutex); | |
354 | __add_layer2(ch, st); | |
355 | mutex_unlock(&st->lmutex); | |
356 | } | |
357 | ||
358 | static int | |
359 | st_own_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg) | |
360 | { | |
08cb3f60 | 361 | if (!ch->st || !ch->st->layer1) |
1b2b03f8 KK |
362 | return -EINVAL; |
363 | return ch->st->layer1->ctrl(ch->st->layer1, cmd, arg); | |
364 | } | |
365 | ||
366 | int | |
367 | create_stack(struct mISDNdevice *dev) | |
368 | { | |
369 | struct mISDNstack *newst; | |
370 | int err; | |
371 | DECLARE_COMPLETION_ONSTACK(done); | |
372 | ||
373 | newst = kzalloc(sizeof(struct mISDNstack), GFP_KERNEL); | |
374 | if (!newst) { | |
375 | printk(KERN_ERR "kmalloc mISDN_stack failed\n"); | |
376 | return -ENOMEM; | |
377 | } | |
378 | newst->dev = dev; | |
379 | INIT_LIST_HEAD(&newst->layer2); | |
380 | INIT_HLIST_HEAD(&newst->l1sock.head); | |
381 | rwlock_init(&newst->l1sock.lock); | |
382 | init_waitqueue_head(&newst->workq); | |
383 | skb_queue_head_init(&newst->msgq); | |
384 | mutex_init(&newst->lmutex); | |
385 | dev->D.st = newst; | |
386 | err = create_teimanager(dev); | |
387 | if (err) { | |
388 | printk(KERN_ERR "kmalloc teimanager failed\n"); | |
389 | kfree(newst); | |
390 | return err; | |
391 | } | |
392 | dev->teimgr->peer = &newst->own; | |
393 | dev->teimgr->recv = mISDN_queue_message; | |
394 | dev->teimgr->st = newst; | |
395 | newst->layer1 = &dev->D; | |
396 | dev->D.recv = l1_receive; | |
397 | dev->D.peer = &newst->own; | |
398 | newst->own.st = newst; | |
399 | newst->own.ctrl = st_own_ctrl; | |
400 | newst->own.send = mISDN_queue_message; | |
401 | newst->own.recv = mISDN_queue_message; | |
402 | if (*debug & DEBUG_CORE_FUNC) | |
837468d1 | 403 | printk(KERN_DEBUG "%s: st(%s)\n", __func__, |
475be4d8 | 404 | dev_name(&newst->dev->dev)); |
1b2b03f8 KK |
405 | newst->notify = &done; |
406 | newst->thread = kthread_run(mISDNStackd, (void *)newst, "mISDN_%s", | |
475be4d8 | 407 | dev_name(&newst->dev->dev)); |
1b2b03f8 KK |
408 | if (IS_ERR(newst->thread)) { |
409 | err = PTR_ERR(newst->thread); | |
410 | printk(KERN_ERR | |
475be4d8 JP |
411 | "mISDN:cannot create kernel thread for %s (%d)\n", |
412 | dev_name(&newst->dev->dev), err); | |
1b2b03f8 KK |
413 | delete_teimanager(dev->teimgr); |
414 | kfree(newst); | |
415 | } else | |
416 | wait_for_completion(&done); | |
417 | return err; | |
418 | } | |
419 | ||
420 | int | |
421 | connect_layer1(struct mISDNdevice *dev, struct mISDNchannel *ch, | |
475be4d8 | 422 | u_int protocol, struct sockaddr_mISDN *adr) |
1b2b03f8 KK |
423 | { |
424 | struct mISDN_sock *msk = container_of(ch, struct mISDN_sock, ch); | |
425 | struct channel_req rq; | |
426 | int err; | |
427 | ||
428 | ||
429 | if (*debug & DEBUG_CORE_FUNC) | |
430 | printk(KERN_DEBUG "%s: %s proto(%x) adr(%d %d %d %d)\n", | |
475be4d8 JP |
431 | __func__, dev_name(&dev->dev), protocol, adr->dev, |
432 | adr->channel, adr->sapi, adr->tei); | |
1b2b03f8 KK |
433 | switch (protocol) { |
434 | case ISDN_P_NT_S0: | |
435 | case ISDN_P_NT_E1: | |
436 | case ISDN_P_TE_S0: | |
437 | case ISDN_P_TE_E1: | |
1b2b03f8 KK |
438 | ch->recv = mISDN_queue_message; |
439 | ch->peer = &dev->D.st->own; | |
440 | ch->st = dev->D.st; | |
441 | rq.protocol = protocol; | |
1f28fa19 | 442 | rq.adr.channel = adr->channel; |
1b2b03f8 | 443 | err = dev->D.ctrl(&dev->D, OPEN_CHANNEL, &rq); |
9a812553 | 444 | printk(KERN_DEBUG "%s: ret %d (dev %d)\n", __func__, err, |
475be4d8 | 445 | dev->id); |
1b2b03f8 KK |
446 | if (err) |
447 | return err; | |
448 | write_lock_bh(&dev->D.st->l1sock.lock); | |
449 | sk_add_node(&msk->sk, &dev->D.st->l1sock.head); | |
450 | write_unlock_bh(&dev->D.st->l1sock.lock); | |
451 | break; | |
452 | default: | |
453 | return -ENOPROTOOPT; | |
454 | } | |
455 | return 0; | |
456 | } | |
457 | ||
458 | int | |
459 | connect_Bstack(struct mISDNdevice *dev, struct mISDNchannel *ch, | |
475be4d8 | 460 | u_int protocol, struct sockaddr_mISDN *adr) |
1b2b03f8 KK |
461 | { |
462 | struct channel_req rq, rq2; | |
463 | int pmask, err; | |
464 | struct Bprotocol *bp; | |
465 | ||
466 | if (*debug & DEBUG_CORE_FUNC) | |
467 | printk(KERN_DEBUG "%s: %s proto(%x) adr(%d %d %d %d)\n", | |
475be4d8 JP |
468 | __func__, dev_name(&dev->dev), protocol, |
469 | adr->dev, adr->channel, adr->sapi, | |
470 | adr->tei); | |
1b2b03f8 KK |
471 | ch->st = dev->D.st; |
472 | pmask = 1 << (protocol & ISDN_P_B_MASK); | |
473 | if (pmask & dev->Bprotocols) { | |
474 | rq.protocol = protocol; | |
475 | rq.adr = *adr; | |
476 | err = dev->D.ctrl(&dev->D, OPEN_CHANNEL, &rq); | |
477 | if (err) | |
478 | return err; | |
479 | ch->recv = rq.ch->send; | |
480 | ch->peer = rq.ch; | |
481 | rq.ch->recv = ch->send; | |
482 | rq.ch->peer = ch; | |
483 | rq.ch->st = dev->D.st; | |
484 | } else { | |
485 | bp = get_Bprotocol4mask(pmask); | |
486 | if (!bp) | |
487 | return -ENOPROTOOPT; | |
488 | rq2.protocol = protocol; | |
489 | rq2.adr = *adr; | |
490 | rq2.ch = ch; | |
491 | err = bp->create(&rq2); | |
492 | if (err) | |
493 | return err; | |
494 | ch->recv = rq2.ch->send; | |
495 | ch->peer = rq2.ch; | |
496 | rq2.ch->st = dev->D.st; | |
497 | rq.protocol = rq2.protocol; | |
498 | rq.adr = *adr; | |
499 | err = dev->D.ctrl(&dev->D, OPEN_CHANNEL, &rq); | |
500 | if (err) { | |
501 | rq2.ch->ctrl(rq2.ch, CLOSE_CHANNEL, NULL); | |
502 | return err; | |
503 | } | |
504 | rq2.ch->recv = rq.ch->send; | |
505 | rq2.ch->peer = rq.ch; | |
506 | rq.ch->recv = rq2.ch->send; | |
507 | rq.ch->peer = rq2.ch; | |
508 | rq.ch->st = dev->D.st; | |
509 | } | |
510 | ch->protocol = protocol; | |
511 | ch->nr = rq.ch->nr; | |
512 | return 0; | |
513 | } | |
514 | ||
515 | int | |
516 | create_l2entity(struct mISDNdevice *dev, struct mISDNchannel *ch, | |
475be4d8 | 517 | u_int protocol, struct sockaddr_mISDN *adr) |
1b2b03f8 KK |
518 | { |
519 | struct channel_req rq; | |
520 | int err; | |
521 | ||
522 | if (*debug & DEBUG_CORE_FUNC) | |
523 | printk(KERN_DEBUG "%s: %s proto(%x) adr(%d %d %d %d)\n", | |
475be4d8 JP |
524 | __func__, dev_name(&dev->dev), protocol, |
525 | adr->dev, adr->channel, adr->sapi, | |
526 | adr->tei); | |
1b2b03f8 KK |
527 | rq.protocol = ISDN_P_TE_S0; |
528 | if (dev->Dprotocols & (1 << ISDN_P_TE_E1)) | |
529 | rq.protocol = ISDN_P_TE_E1; | |
530 | switch (protocol) { | |
531 | case ISDN_P_LAPD_NT: | |
532 | rq.protocol = ISDN_P_NT_S0; | |
533 | if (dev->Dprotocols & (1 << ISDN_P_NT_E1)) | |
534 | rq.protocol = ISDN_P_NT_E1; | |
535 | case ISDN_P_LAPD_TE: | |
1b2b03f8 KK |
536 | ch->recv = mISDN_queue_message; |
537 | ch->peer = &dev->D.st->own; | |
538 | ch->st = dev->D.st; | |
539 | rq.adr.channel = 0; | |
540 | err = dev->D.ctrl(&dev->D, OPEN_CHANNEL, &rq); | |
541 | printk(KERN_DEBUG "%s: ret 1 %d\n", __func__, err); | |
542 | if (err) | |
543 | break; | |
544 | rq.protocol = protocol; | |
545 | rq.adr = *adr; | |
546 | rq.ch = ch; | |
547 | err = dev->teimgr->ctrl(dev->teimgr, OPEN_CHANNEL, &rq); | |
548 | printk(KERN_DEBUG "%s: ret 2 %d\n", __func__, err); | |
549 | if (!err) { | |
550 | if ((protocol == ISDN_P_LAPD_NT) && !rq.ch) | |
551 | break; | |
552 | add_layer2(rq.ch, dev->D.st); | |
553 | rq.ch->recv = mISDN_queue_message; | |
554 | rq.ch->peer = &dev->D.st->own; | |
555 | rq.ch->ctrl(rq.ch, OPEN_CHANNEL, NULL); /* can't fail */ | |
556 | } | |
557 | break; | |
558 | default: | |
559 | err = -EPROTONOSUPPORT; | |
560 | } | |
561 | return err; | |
562 | } | |
563 | ||
564 | void | |
565 | delete_channel(struct mISDNchannel *ch) | |
566 | { | |
567 | struct mISDN_sock *msk = container_of(ch, struct mISDN_sock, ch); | |
568 | struct mISDNchannel *pch; | |
569 | ||
570 | if (!ch->st) { | |
571 | printk(KERN_WARNING "%s: no stack\n", __func__); | |
572 | return; | |
573 | } | |
574 | if (*debug & DEBUG_CORE_FUNC) | |
575 | printk(KERN_DEBUG "%s: st(%s) protocol(%x)\n", __func__, | |
475be4d8 | 576 | dev_name(&ch->st->dev->dev), ch->protocol); |
1b2b03f8 KK |
577 | if (ch->protocol >= ISDN_P_B_START) { |
578 | if (ch->peer) { | |
579 | ch->peer->ctrl(ch->peer, CLOSE_CHANNEL, NULL); | |
580 | ch->peer = NULL; | |
581 | } | |
582 | return; | |
583 | } | |
584 | switch (ch->protocol) { | |
585 | case ISDN_P_NT_S0: | |
586 | case ISDN_P_TE_S0: | |
587 | case ISDN_P_NT_E1: | |
588 | case ISDN_P_TE_E1: | |
589 | write_lock_bh(&ch->st->l1sock.lock); | |
590 | sk_del_node_init(&msk->sk); | |
591 | write_unlock_bh(&ch->st->l1sock.lock); | |
592 | ch->st->dev->D.ctrl(&ch->st->dev->D, CLOSE_CHANNEL, NULL); | |
593 | break; | |
594 | case ISDN_P_LAPD_TE: | |
595 | pch = get_channel4id(ch->st, ch->nr); | |
596 | if (pch) { | |
597 | mutex_lock(&ch->st->lmutex); | |
598 | list_del(&pch->list); | |
599 | mutex_unlock(&ch->st->lmutex); | |
600 | pch->ctrl(pch, CLOSE_CHANNEL, NULL); | |
601 | pch = ch->st->dev->teimgr; | |
602 | pch->ctrl(pch, CLOSE_CHANNEL, NULL); | |
603 | } else | |
604 | printk(KERN_WARNING "%s: no l2 channel\n", | |
475be4d8 | 605 | __func__); |
1b2b03f8 KK |
606 | break; |
607 | case ISDN_P_LAPD_NT: | |
608 | pch = ch->st->dev->teimgr; | |
609 | if (pch) { | |
610 | pch->ctrl(pch, CLOSE_CHANNEL, NULL); | |
611 | } else | |
612 | printk(KERN_WARNING "%s: no l2 channel\n", | |
475be4d8 | 613 | __func__); |
1b2b03f8 KK |
614 | break; |
615 | default: | |
616 | break; | |
617 | } | |
618 | return; | |
619 | } | |
620 | ||
621 | void | |
622 | delete_stack(struct mISDNdevice *dev) | |
623 | { | |
624 | struct mISDNstack *st = dev->D.st; | |
625 | DECLARE_COMPLETION_ONSTACK(done); | |
626 | ||
627 | if (*debug & DEBUG_CORE_FUNC) | |
628 | printk(KERN_DEBUG "%s: st(%s)\n", __func__, | |
475be4d8 | 629 | dev_name(&st->dev->dev)); |
1b2b03f8 KK |
630 | if (dev->teimgr) |
631 | delete_teimanager(dev->teimgr); | |
632 | if (st->thread) { | |
633 | if (st->notify) { | |
634 | printk(KERN_WARNING "%s: notifier in use\n", | |
475be4d8 JP |
635 | __func__); |
636 | complete(st->notify); | |
1b2b03f8 KK |
637 | } |
638 | st->notify = &done; | |
639 | test_and_set_bit(mISDN_STACK_ABORT, &st->status); | |
640 | test_and_set_bit(mISDN_STACK_WAKEUP, &st->status); | |
641 | wake_up_interruptible(&st->workq); | |
642 | wait_for_completion(&done); | |
643 | } | |
644 | if (!list_empty(&st->layer2)) | |
645 | printk(KERN_WARNING "%s: layer2 list not empty\n", | |
475be4d8 | 646 | __func__); |
1b2b03f8 KK |
647 | if (!hlist_empty(&st->l1sock.head)) |
648 | printk(KERN_WARNING "%s: layer1 list not empty\n", | |
475be4d8 | 649 | __func__); |
1b2b03f8 KK |
650 | kfree(st); |
651 | } | |
652 | ||
653 | void | |
654 | mISDN_initstack(u_int *dp) | |
655 | { | |
656 | debug = dp; | |
657 | } |