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Commit | Line | Data |
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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 | ||
18 | #include <linux/mISDNif.h> | |
19 | #include "core.h" | |
20 | ||
dfa96ec1 | 21 | static u_int *debug; |
1b2b03f8 KK |
22 | |
23 | static struct proto mISDN_proto = { | |
24 | .name = "misdn", | |
25 | .owner = THIS_MODULE, | |
26 | .obj_size = sizeof(struct mISDN_sock) | |
27 | }; | |
28 | ||
29 | #define _pms(sk) ((struct mISDN_sock *)sk) | |
30 | ||
31 | static struct mISDN_sock_list data_sockets = { | |
32 | .lock = __RW_LOCK_UNLOCKED(data_sockets.lock) | |
33 | }; | |
34 | ||
35 | static struct mISDN_sock_list base_sockets = { | |
36 | .lock = __RW_LOCK_UNLOCKED(base_sockets.lock) | |
37 | }; | |
38 | ||
39 | #define L2_HEADER_LEN 4 | |
40 | ||
41 | static inline struct sk_buff * | |
42 | _l2_alloc_skb(unsigned int len, gfp_t gfp_mask) | |
43 | { | |
44 | struct sk_buff *skb; | |
45 | ||
46 | skb = alloc_skb(len + L2_HEADER_LEN, gfp_mask); | |
47 | if (likely(skb)) | |
48 | skb_reserve(skb, L2_HEADER_LEN); | |
49 | return skb; | |
50 | } | |
51 | ||
52 | static void | |
53 | mISDN_sock_link(struct mISDN_sock_list *l, struct sock *sk) | |
54 | { | |
55 | write_lock_bh(&l->lock); | |
56 | sk_add_node(sk, &l->head); | |
57 | write_unlock_bh(&l->lock); | |
58 | } | |
59 | ||
60 | static void mISDN_sock_unlink(struct mISDN_sock_list *l, struct sock *sk) | |
61 | { | |
62 | write_lock_bh(&l->lock); | |
63 | sk_del_node_init(sk); | |
64 | write_unlock_bh(&l->lock); | |
65 | } | |
66 | ||
67 | static int | |
68 | mISDN_send(struct mISDNchannel *ch, struct sk_buff *skb) | |
69 | { | |
70 | struct mISDN_sock *msk; | |
71 | int err; | |
72 | ||
73 | msk = container_of(ch, struct mISDN_sock, ch); | |
74 | if (*debug & DEBUG_SOCKET) | |
75 | printk(KERN_DEBUG "%s len %d %p\n", __func__, skb->len, skb); | |
76 | if (msk->sk.sk_state == MISDN_CLOSED) | |
77 | return -EUNATCH; | |
78 | __net_timestamp(skb); | |
79 | err = sock_queue_rcv_skb(&msk->sk, skb); | |
80 | if (err) | |
81 | printk(KERN_WARNING "%s: error %d\n", __func__, err); | |
82 | return err; | |
83 | } | |
84 | ||
85 | static int | |
86 | mISDN_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg) | |
87 | { | |
88 | struct mISDN_sock *msk; | |
89 | ||
90 | msk = container_of(ch, struct mISDN_sock, ch); | |
91 | if (*debug & DEBUG_SOCKET) | |
92 | printk(KERN_DEBUG "%s(%p, %x, %p)\n", __func__, ch, cmd, arg); | |
93 | switch (cmd) { | |
94 | case CLOSE_CHANNEL: | |
95 | msk->sk.sk_state = MISDN_CLOSED; | |
96 | break; | |
97 | } | |
98 | return 0; | |
99 | } | |
100 | ||
101 | static inline void | |
102 | mISDN_sock_cmsg(struct sock *sk, struct msghdr *msg, struct sk_buff *skb) | |
103 | { | |
104 | struct timeval tv; | |
105 | ||
106 | if (_pms(sk)->cmask & MISDN_TIME_STAMP) { | |
107 | skb_get_timestamp(skb, &tv); | |
108 | put_cmsg(msg, SOL_MISDN, MISDN_TIME_STAMP, sizeof(tv), &tv); | |
109 | } | |
110 | } | |
111 | ||
112 | static int | |
113 | mISDN_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
114 | struct msghdr *msg, size_t len, int flags) | |
115 | { | |
116 | struct sk_buff *skb; | |
117 | struct sock *sk = sock->sk; | |
118 | struct sockaddr_mISDN *maddr; | |
119 | ||
120 | int copied, err; | |
121 | ||
122 | if (*debug & DEBUG_SOCKET) | |
123 | printk(KERN_DEBUG "%s: len %d, flags %x ch.nr %d, proto %x\n", | |
124 | __func__, (int)len, flags, _pms(sk)->ch.nr, | |
125 | sk->sk_protocol); | |
126 | if (flags & (MSG_OOB)) | |
127 | return -EOPNOTSUPP; | |
128 | ||
129 | if (sk->sk_state == MISDN_CLOSED) | |
130 | return 0; | |
131 | ||
132 | skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &err); | |
133 | if (!skb) | |
134 | return err; | |
135 | ||
136 | if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) { | |
137 | msg->msg_namelen = sizeof(struct sockaddr_mISDN); | |
138 | maddr = (struct sockaddr_mISDN *)msg->msg_name; | |
139 | maddr->family = AF_ISDN; | |
140 | maddr->dev = _pms(sk)->dev->id; | |
141 | if ((sk->sk_protocol == ISDN_P_LAPD_TE) || | |
142 | (sk->sk_protocol == ISDN_P_LAPD_NT)) { | |
143 | maddr->channel = (mISDN_HEAD_ID(skb) >> 16) & 0xff; | |
144 | maddr->tei = (mISDN_HEAD_ID(skb) >> 8) & 0xff; | |
145 | maddr->sapi = mISDN_HEAD_ID(skb) & 0xff; | |
146 | } else { | |
147 | maddr->channel = _pms(sk)->ch.nr; | |
148 | maddr->sapi = _pms(sk)->ch.addr & 0xFF; | |
149 | maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xFF; | |
150 | } | |
151 | } else { | |
152 | if (msg->msg_namelen) | |
153 | printk(KERN_WARNING "%s: too small namelen %d\n", | |
154 | __func__, msg->msg_namelen); | |
155 | msg->msg_namelen = 0; | |
156 | } | |
157 | ||
158 | copied = skb->len + MISDN_HEADER_LEN; | |
159 | if (len < copied) { | |
160 | if (flags & MSG_PEEK) | |
161 | atomic_dec(&skb->users); | |
162 | else | |
163 | skb_queue_head(&sk->sk_receive_queue, skb); | |
164 | return -ENOSPC; | |
165 | } | |
166 | memcpy(skb_push(skb, MISDN_HEADER_LEN), mISDN_HEAD_P(skb), | |
167 | MISDN_HEADER_LEN); | |
168 | ||
169 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); | |
170 | ||
171 | mISDN_sock_cmsg(sk, msg, skb); | |
172 | ||
173 | skb_free_datagram(sk, skb); | |
174 | ||
175 | return err ? : copied; | |
176 | } | |
177 | ||
178 | static int | |
179 | mISDN_sock_sendmsg(struct kiocb *iocb, struct socket *sock, | |
180 | struct msghdr *msg, size_t len) | |
181 | { | |
182 | struct sock *sk = sock->sk; | |
183 | struct sk_buff *skb; | |
184 | int err = -ENOMEM; | |
185 | struct sockaddr_mISDN *maddr; | |
186 | ||
187 | if (*debug & DEBUG_SOCKET) | |
188 | printk(KERN_DEBUG "%s: len %d flags %x ch %d proto %x\n", | |
189 | __func__, (int)len, msg->msg_flags, _pms(sk)->ch.nr, | |
190 | sk->sk_protocol); | |
191 | ||
192 | if (msg->msg_flags & MSG_OOB) | |
193 | return -EOPNOTSUPP; | |
194 | ||
195 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) | |
196 | return -EINVAL; | |
197 | ||
198 | if (len < MISDN_HEADER_LEN) | |
199 | return -EINVAL; | |
200 | ||
201 | if (sk->sk_state != MISDN_BOUND) | |
202 | return -EBADFD; | |
203 | ||
204 | lock_sock(sk); | |
205 | ||
206 | skb = _l2_alloc_skb(len, GFP_KERNEL); | |
207 | if (!skb) | |
208 | goto done; | |
209 | ||
210 | if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { | |
211 | err = -EFAULT; | |
212 | goto drop; | |
213 | } | |
214 | ||
215 | memcpy(mISDN_HEAD_P(skb), skb->data, MISDN_HEADER_LEN); | |
216 | skb_pull(skb, MISDN_HEADER_LEN); | |
217 | ||
218 | if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) { | |
219 | /* if we have a address, we use it */ | |
220 | maddr = (struct sockaddr_mISDN *)msg->msg_name; | |
221 | mISDN_HEAD_ID(skb) = maddr->channel; | |
222 | } else { /* use default for L2 messages */ | |
223 | if ((sk->sk_protocol == ISDN_P_LAPD_TE) || | |
224 | (sk->sk_protocol == ISDN_P_LAPD_NT)) | |
225 | mISDN_HEAD_ID(skb) = _pms(sk)->ch.nr; | |
226 | } | |
227 | ||
228 | if (*debug & DEBUG_SOCKET) | |
229 | printk(KERN_DEBUG "%s: ID:%x\n", | |
230 | __func__, mISDN_HEAD_ID(skb)); | |
231 | ||
232 | err = -ENODEV; | |
233 | if (!_pms(sk)->ch.peer || | |
234 | (err = _pms(sk)->ch.recv(_pms(sk)->ch.peer, skb))) | |
235 | goto drop; | |
236 | ||
237 | err = len; | |
238 | ||
239 | done: | |
240 | release_sock(sk); | |
241 | return err; | |
242 | ||
243 | drop: | |
244 | kfree_skb(skb); | |
245 | goto done; | |
246 | } | |
247 | ||
248 | static int | |
249 | data_sock_release(struct socket *sock) | |
250 | { | |
251 | struct sock *sk = sock->sk; | |
252 | ||
253 | if (*debug & DEBUG_SOCKET) | |
254 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
255 | if (!sk) | |
256 | return 0; | |
257 | switch (sk->sk_protocol) { | |
258 | case ISDN_P_TE_S0: | |
259 | case ISDN_P_NT_S0: | |
260 | case ISDN_P_TE_E1: | |
261 | case ISDN_P_NT_E1: | |
262 | if (sk->sk_state == MISDN_BOUND) | |
263 | delete_channel(&_pms(sk)->ch); | |
264 | else | |
265 | mISDN_sock_unlink(&data_sockets, sk); | |
266 | break; | |
267 | case ISDN_P_LAPD_TE: | |
268 | case ISDN_P_LAPD_NT: | |
269 | case ISDN_P_B_RAW: | |
270 | case ISDN_P_B_HDLC: | |
271 | case ISDN_P_B_X75SLP: | |
272 | case ISDN_P_B_L2DTMF: | |
273 | case ISDN_P_B_L2DSP: | |
274 | case ISDN_P_B_L2DSPHDLC: | |
275 | delete_channel(&_pms(sk)->ch); | |
276 | mISDN_sock_unlink(&data_sockets, sk); | |
277 | break; | |
278 | } | |
279 | ||
280 | lock_sock(sk); | |
281 | ||
282 | sock_orphan(sk); | |
283 | skb_queue_purge(&sk->sk_receive_queue); | |
284 | ||
285 | release_sock(sk); | |
286 | sock_put(sk); | |
287 | ||
288 | return 0; | |
289 | } | |
290 | ||
291 | static int | |
292 | data_sock_ioctl_bound(struct sock *sk, unsigned int cmd, void __user *p) | |
293 | { | |
294 | struct mISDN_ctrl_req cq; | |
295 | int err = -EINVAL, val; | |
296 | struct mISDNchannel *bchan, *next; | |
297 | ||
298 | lock_sock(sk); | |
299 | if (!_pms(sk)->dev) { | |
300 | err = -ENODEV; | |
301 | goto done; | |
302 | } | |
303 | switch (cmd) { | |
304 | case IMCTRLREQ: | |
305 | if (copy_from_user(&cq, p, sizeof(cq))) { | |
306 | err = -EFAULT; | |
307 | break; | |
308 | } | |
309 | if ((sk->sk_protocol & ~ISDN_P_B_MASK) == ISDN_P_B_START) { | |
310 | list_for_each_entry_safe(bchan, next, | |
311 | &_pms(sk)->dev->bchannels, list) { | |
312 | if (bchan->nr == cq.channel) { | |
313 | err = bchan->ctrl(bchan, | |
314 | CONTROL_CHANNEL, &cq); | |
315 | break; | |
316 | } | |
317 | } | |
318 | } else | |
319 | err = _pms(sk)->dev->D.ctrl(&_pms(sk)->dev->D, | |
320 | CONTROL_CHANNEL, &cq); | |
321 | if (err) | |
322 | break; | |
323 | if (copy_to_user(p, &cq, sizeof(cq))) | |
324 | err = -EFAULT; | |
325 | break; | |
326 | case IMCLEAR_L2: | |
327 | if (sk->sk_protocol != ISDN_P_LAPD_NT) { | |
328 | err = -EINVAL; | |
329 | break; | |
330 | } | |
331 | if (get_user(val, (int __user *)p)) { | |
332 | err = -EFAULT; | |
333 | break; | |
334 | } | |
335 | err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, | |
336 | CONTROL_CHANNEL, &val); | |
337 | break; | |
338 | default: | |
339 | err = -EINVAL; | |
340 | break; | |
341 | } | |
342 | done: | |
343 | release_sock(sk); | |
344 | return err; | |
345 | } | |
346 | ||
347 | static int | |
348 | data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
349 | { | |
350 | int err = 0, id; | |
351 | struct sock *sk = sock->sk; | |
352 | struct mISDNdevice *dev; | |
353 | struct mISDNversion ver; | |
354 | ||
355 | switch (cmd) { | |
356 | case IMGETVERSION: | |
357 | ver.major = MISDN_MAJOR_VERSION; | |
358 | ver.minor = MISDN_MINOR_VERSION; | |
359 | ver.release = MISDN_RELEASE; | |
360 | if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) | |
361 | err = -EFAULT; | |
362 | break; | |
363 | case IMGETCOUNT: | |
364 | id = get_mdevice_count(); | |
365 | if (put_user(id, (int __user *)arg)) | |
366 | err = -EFAULT; | |
367 | break; | |
368 | case IMGETDEVINFO: | |
369 | if (get_user(id, (int __user *)arg)) { | |
370 | err = -EFAULT; | |
371 | break; | |
372 | } | |
373 | dev = get_mdevice(id); | |
374 | if (dev) { | |
375 | struct mISDN_devinfo di; | |
376 | ||
377 | di.id = dev->id; | |
378 | di.Dprotocols = dev->Dprotocols; | |
379 | di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); | |
380 | di.protocol = dev->D.protocol; | |
381 | memcpy(di.channelmap, dev->channelmap, | |
ff4cc1de | 382 | sizeof(di.channelmap)); |
1b2b03f8 | 383 | di.nrbchan = dev->nrbchan; |
837468d1 | 384 | strcpy(di.name, dev_name(&dev->dev)); |
1b2b03f8 KK |
385 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
386 | err = -EFAULT; | |
387 | } else | |
388 | err = -ENODEV; | |
389 | break; | |
390 | default: | |
391 | if (sk->sk_state == MISDN_BOUND) | |
392 | err = data_sock_ioctl_bound(sk, cmd, | |
393 | (void __user *)arg); | |
394 | else | |
395 | err = -ENOTCONN; | |
396 | } | |
397 | return err; | |
398 | } | |
399 | ||
400 | static int data_sock_setsockopt(struct socket *sock, int level, int optname, | |
401 | char __user *optval, int len) | |
402 | { | |
403 | struct sock *sk = sock->sk; | |
404 | int err = 0, opt = 0; | |
405 | ||
406 | if (*debug & DEBUG_SOCKET) | |
407 | printk(KERN_DEBUG "%s(%p, %d, %x, %p, %d)\n", __func__, sock, | |
408 | level, optname, optval, len); | |
409 | ||
410 | lock_sock(sk); | |
411 | ||
412 | switch (optname) { | |
413 | case MISDN_TIME_STAMP: | |
414 | if (get_user(opt, (int __user *)optval)) { | |
415 | err = -EFAULT; | |
416 | break; | |
417 | } | |
418 | ||
419 | if (opt) | |
420 | _pms(sk)->cmask |= MISDN_TIME_STAMP; | |
421 | else | |
422 | _pms(sk)->cmask &= ~MISDN_TIME_STAMP; | |
423 | break; | |
424 | default: | |
425 | err = -ENOPROTOOPT; | |
426 | break; | |
427 | } | |
428 | release_sock(sk); | |
429 | return err; | |
430 | } | |
431 | ||
432 | static int data_sock_getsockopt(struct socket *sock, int level, int optname, | |
433 | char __user *optval, int __user *optlen) | |
434 | { | |
435 | struct sock *sk = sock->sk; | |
436 | int len, opt; | |
437 | ||
438 | if (get_user(len, optlen)) | |
439 | return -EFAULT; | |
440 | ||
441 | switch (optname) { | |
442 | case MISDN_TIME_STAMP: | |
443 | if (_pms(sk)->cmask & MISDN_TIME_STAMP) | |
444 | opt = 1; | |
445 | else | |
446 | opt = 0; | |
447 | ||
448 | if (put_user(opt, optval)) | |
449 | return -EFAULT; | |
450 | break; | |
451 | default: | |
452 | return -ENOPROTOOPT; | |
453 | } | |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
458 | static int | |
459 | data_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
460 | { | |
461 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; | |
462 | struct sock *sk = sock->sk; | |
1b4d3312 AE |
463 | struct hlist_node *node; |
464 | struct sock *csk; | |
1b2b03f8 KK |
465 | int err = 0; |
466 | ||
467 | if (*debug & DEBUG_SOCKET) | |
468 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
469 | if (addr_len != sizeof(struct sockaddr_mISDN)) | |
470 | return -EINVAL; | |
471 | if (!maddr || maddr->family != AF_ISDN) | |
472 | return -EINVAL; | |
473 | ||
474 | lock_sock(sk); | |
475 | ||
476 | if (_pms(sk)->dev) { | |
477 | err = -EALREADY; | |
478 | goto done; | |
479 | } | |
480 | _pms(sk)->dev = get_mdevice(maddr->dev); | |
481 | if (!_pms(sk)->dev) { | |
482 | err = -ENODEV; | |
483 | goto done; | |
484 | } | |
1b4d3312 AE |
485 | |
486 | read_lock_bh(&data_sockets.lock); | |
487 | sk_for_each(csk, node, &data_sockets.head) { | |
488 | if (sk == csk) | |
489 | continue; | |
490 | if (_pms(csk)->dev != _pms(sk)->dev) | |
491 | continue; | |
492 | if (csk->sk_protocol >= ISDN_P_B_START) | |
493 | continue; | |
494 | if (IS_ISDN_P_TE(csk->sk_protocol) | |
495 | == IS_ISDN_P_TE(sk->sk_protocol)) | |
496 | continue; | |
497 | read_unlock_bh(&data_sockets.lock); | |
498 | err = -EBUSY; | |
499 | goto done; | |
500 | } | |
501 | read_unlock_bh(&data_sockets.lock); | |
502 | ||
1b2b03f8 KK |
503 | _pms(sk)->ch.send = mISDN_send; |
504 | _pms(sk)->ch.ctrl = mISDN_ctrl; | |
505 | ||
506 | switch (sk->sk_protocol) { | |
507 | case ISDN_P_TE_S0: | |
508 | case ISDN_P_NT_S0: | |
509 | case ISDN_P_TE_E1: | |
510 | case ISDN_P_NT_E1: | |
511 | mISDN_sock_unlink(&data_sockets, sk); | |
512 | err = connect_layer1(_pms(sk)->dev, &_pms(sk)->ch, | |
513 | sk->sk_protocol, maddr); | |
514 | if (err) | |
515 | mISDN_sock_link(&data_sockets, sk); | |
516 | break; | |
517 | case ISDN_P_LAPD_TE: | |
518 | case ISDN_P_LAPD_NT: | |
519 | err = create_l2entity(_pms(sk)->dev, &_pms(sk)->ch, | |
520 | sk->sk_protocol, maddr); | |
521 | break; | |
522 | case ISDN_P_B_RAW: | |
523 | case ISDN_P_B_HDLC: | |
524 | case ISDN_P_B_X75SLP: | |
525 | case ISDN_P_B_L2DTMF: | |
526 | case ISDN_P_B_L2DSP: | |
527 | case ISDN_P_B_L2DSPHDLC: | |
528 | err = connect_Bstack(_pms(sk)->dev, &_pms(sk)->ch, | |
529 | sk->sk_protocol, maddr); | |
530 | break; | |
531 | default: | |
532 | err = -EPROTONOSUPPORT; | |
533 | } | |
534 | if (err) | |
535 | goto done; | |
536 | sk->sk_state = MISDN_BOUND; | |
537 | _pms(sk)->ch.protocol = sk->sk_protocol; | |
538 | ||
539 | done: | |
540 | release_sock(sk); | |
541 | return err; | |
542 | } | |
543 | ||
544 | static int | |
545 | data_sock_getname(struct socket *sock, struct sockaddr *addr, | |
546 | int *addr_len, int peer) | |
547 | { | |
548 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; | |
549 | struct sock *sk = sock->sk; | |
550 | ||
551 | if (!_pms(sk)->dev) | |
552 | return -EBADFD; | |
553 | ||
554 | lock_sock(sk); | |
555 | ||
556 | *addr_len = sizeof(*maddr); | |
557 | maddr->dev = _pms(sk)->dev->id; | |
558 | maddr->channel = _pms(sk)->ch.nr; | |
559 | maddr->sapi = _pms(sk)->ch.addr & 0xff; | |
560 | maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xff; | |
561 | release_sock(sk); | |
562 | return 0; | |
563 | } | |
564 | ||
565 | static const struct proto_ops data_sock_ops = { | |
566 | .family = PF_ISDN, | |
567 | .owner = THIS_MODULE, | |
568 | .release = data_sock_release, | |
569 | .ioctl = data_sock_ioctl, | |
570 | .bind = data_sock_bind, | |
571 | .getname = data_sock_getname, | |
572 | .sendmsg = mISDN_sock_sendmsg, | |
573 | .recvmsg = mISDN_sock_recvmsg, | |
574 | .poll = datagram_poll, | |
575 | .listen = sock_no_listen, | |
576 | .shutdown = sock_no_shutdown, | |
577 | .setsockopt = data_sock_setsockopt, | |
578 | .getsockopt = data_sock_getsockopt, | |
579 | .connect = sock_no_connect, | |
580 | .socketpair = sock_no_socketpair, | |
581 | .accept = sock_no_accept, | |
582 | .mmap = sock_no_mmap | |
583 | }; | |
584 | ||
585 | static int | |
586 | data_sock_create(struct net *net, struct socket *sock, int protocol) | |
587 | { | |
588 | struct sock *sk; | |
589 | ||
590 | if (sock->type != SOCK_DGRAM) | |
591 | return -ESOCKTNOSUPPORT; | |
592 | ||
593 | sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto); | |
594 | if (!sk) | |
595 | return -ENOMEM; | |
596 | ||
597 | sock_init_data(sock, sk); | |
598 | ||
599 | sock->ops = &data_sock_ops; | |
600 | sock->state = SS_UNCONNECTED; | |
601 | sock_reset_flag(sk, SOCK_ZAPPED); | |
602 | ||
603 | sk->sk_protocol = protocol; | |
604 | sk->sk_state = MISDN_OPEN; | |
605 | mISDN_sock_link(&data_sockets, sk); | |
606 | ||
607 | return 0; | |
608 | } | |
609 | ||
610 | static int | |
611 | base_sock_release(struct socket *sock) | |
612 | { | |
613 | struct sock *sk = sock->sk; | |
614 | ||
615 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
616 | if (!sk) | |
617 | return 0; | |
618 | ||
619 | mISDN_sock_unlink(&base_sockets, sk); | |
620 | sock_orphan(sk); | |
621 | sock_put(sk); | |
622 | ||
623 | return 0; | |
624 | } | |
625 | ||
626 | static int | |
627 | base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
628 | { | |
629 | int err = 0, id; | |
630 | struct mISDNdevice *dev; | |
631 | struct mISDNversion ver; | |
632 | ||
633 | switch (cmd) { | |
634 | case IMGETVERSION: | |
635 | ver.major = MISDN_MAJOR_VERSION; | |
636 | ver.minor = MISDN_MINOR_VERSION; | |
637 | ver.release = MISDN_RELEASE; | |
638 | if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) | |
639 | err = -EFAULT; | |
640 | break; | |
641 | case IMGETCOUNT: | |
642 | id = get_mdevice_count(); | |
643 | if (put_user(id, (int __user *)arg)) | |
644 | err = -EFAULT; | |
645 | break; | |
646 | case IMGETDEVINFO: | |
647 | if (get_user(id, (int __user *)arg)) { | |
648 | err = -EFAULT; | |
649 | break; | |
650 | } | |
651 | dev = get_mdevice(id); | |
652 | if (dev) { | |
653 | struct mISDN_devinfo di; | |
654 | ||
655 | di.id = dev->id; | |
656 | di.Dprotocols = dev->Dprotocols; | |
657 | di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); | |
658 | di.protocol = dev->D.protocol; | |
659 | memcpy(di.channelmap, dev->channelmap, | |
ff4cc1de | 660 | sizeof(di.channelmap)); |
1b2b03f8 | 661 | di.nrbchan = dev->nrbchan; |
837468d1 | 662 | strcpy(di.name, dev_name(&dev->dev)); |
1b2b03f8 KK |
663 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
664 | err = -EFAULT; | |
665 | } else | |
666 | err = -ENODEV; | |
667 | break; | |
8b6015f7 MU |
668 | case IMSETDEVNAME: |
669 | { | |
670 | struct mISDN_devrename dn; | |
671 | if (copy_from_user(&dn, (void __user *)arg, | |
672 | sizeof(dn))) { | |
673 | err = -EFAULT; | |
674 | break; | |
675 | } | |
676 | dev = get_mdevice(dn.id); | |
677 | if (dev) | |
837468d1 | 678 | err = device_rename(&dev->dev, dn.name); |
8b6015f7 MU |
679 | else |
680 | err = -ENODEV; | |
681 | } | |
682 | break; | |
1b2b03f8 KK |
683 | default: |
684 | err = -EINVAL; | |
685 | } | |
686 | return err; | |
687 | } | |
688 | ||
689 | static int | |
690 | base_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
691 | { | |
692 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; | |
693 | struct sock *sk = sock->sk; | |
694 | int err = 0; | |
695 | ||
696 | if (!maddr || maddr->family != AF_ISDN) | |
697 | return -EINVAL; | |
698 | ||
699 | lock_sock(sk); | |
700 | ||
701 | if (_pms(sk)->dev) { | |
702 | err = -EALREADY; | |
703 | goto done; | |
704 | } | |
705 | ||
706 | _pms(sk)->dev = get_mdevice(maddr->dev); | |
707 | if (!_pms(sk)->dev) { | |
708 | err = -ENODEV; | |
709 | goto done; | |
710 | } | |
711 | sk->sk_state = MISDN_BOUND; | |
712 | ||
713 | done: | |
714 | release_sock(sk); | |
715 | return err; | |
716 | } | |
717 | ||
718 | static const struct proto_ops base_sock_ops = { | |
719 | .family = PF_ISDN, | |
720 | .owner = THIS_MODULE, | |
721 | .release = base_sock_release, | |
722 | .ioctl = base_sock_ioctl, | |
723 | .bind = base_sock_bind, | |
724 | .getname = sock_no_getname, | |
725 | .sendmsg = sock_no_sendmsg, | |
726 | .recvmsg = sock_no_recvmsg, | |
727 | .poll = sock_no_poll, | |
728 | .listen = sock_no_listen, | |
729 | .shutdown = sock_no_shutdown, | |
730 | .setsockopt = sock_no_setsockopt, | |
731 | .getsockopt = sock_no_getsockopt, | |
732 | .connect = sock_no_connect, | |
733 | .socketpair = sock_no_socketpair, | |
734 | .accept = sock_no_accept, | |
735 | .mmap = sock_no_mmap | |
736 | }; | |
737 | ||
738 | ||
739 | static int | |
740 | base_sock_create(struct net *net, struct socket *sock, int protocol) | |
741 | { | |
742 | struct sock *sk; | |
743 | ||
744 | if (sock->type != SOCK_RAW) | |
745 | return -ESOCKTNOSUPPORT; | |
746 | ||
747 | sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto); | |
748 | if (!sk) | |
749 | return -ENOMEM; | |
750 | ||
751 | sock_init_data(sock, sk); | |
752 | sock->ops = &base_sock_ops; | |
753 | sock->state = SS_UNCONNECTED; | |
754 | sock_reset_flag(sk, SOCK_ZAPPED); | |
755 | sk->sk_protocol = protocol; | |
756 | sk->sk_state = MISDN_OPEN; | |
757 | mISDN_sock_link(&base_sockets, sk); | |
758 | ||
759 | return 0; | |
760 | } | |
761 | ||
762 | static int | |
763 | mISDN_sock_create(struct net *net, struct socket *sock, int proto) | |
764 | { | |
765 | int err = -EPROTONOSUPPORT; | |
766 | ||
767 | switch (proto) { | |
768 | case ISDN_P_BASE: | |
769 | err = base_sock_create(net, sock, proto); | |
770 | break; | |
771 | case ISDN_P_TE_S0: | |
772 | case ISDN_P_NT_S0: | |
773 | case ISDN_P_TE_E1: | |
774 | case ISDN_P_NT_E1: | |
775 | case ISDN_P_LAPD_TE: | |
776 | case ISDN_P_LAPD_NT: | |
777 | case ISDN_P_B_RAW: | |
778 | case ISDN_P_B_HDLC: | |
779 | case ISDN_P_B_X75SLP: | |
780 | case ISDN_P_B_L2DTMF: | |
781 | case ISDN_P_B_L2DSP: | |
782 | case ISDN_P_B_L2DSPHDLC: | |
783 | err = data_sock_create(net, sock, proto); | |
784 | break; | |
785 | default: | |
786 | return err; | |
787 | } | |
788 | ||
789 | return err; | |
790 | } | |
791 | ||
792 | static struct | |
793 | net_proto_family mISDN_sock_family_ops = { | |
794 | .owner = THIS_MODULE, | |
795 | .family = PF_ISDN, | |
796 | .create = mISDN_sock_create, | |
797 | }; | |
798 | ||
799 | int | |
800 | misdn_sock_init(u_int *deb) | |
801 | { | |
802 | int err; | |
803 | ||
804 | debug = deb; | |
805 | err = sock_register(&mISDN_sock_family_ops); | |
806 | if (err) | |
807 | printk(KERN_ERR "%s: error(%d)\n", __func__, err); | |
808 | return err; | |
809 | } | |
810 | ||
811 | void | |
812 | misdn_sock_cleanup(void) | |
813 | { | |
814 | sock_unregister(PF_ISDN); | |
815 | } | |
816 |