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; | |
5df3b8bc | 212 | goto done; |
1b2b03f8 KK |
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)) | |
eac74af9 | 225 | mISDN_HEAD_ID(skb) = _pms(sk)->ch.nr; |
1b2b03f8 KK |
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; | |
5df3b8bc KK |
233 | if (!_pms(sk)->ch.peer) |
234 | goto done; | |
235 | err = _pms(sk)->ch.recv(_pms(sk)->ch.peer, skb); | |
236 | if (err) | |
237 | goto done; | |
238 | else { | |
239 | skb = NULL; | |
240 | err = len; | |
241 | } | |
1b2b03f8 KK |
242 | |
243 | done: | |
5df3b8bc KK |
244 | if (skb) |
245 | kfree_skb(skb); | |
1b2b03f8 KK |
246 | release_sock(sk); |
247 | return err; | |
1b2b03f8 KK |
248 | } |
249 | ||
250 | static int | |
251 | data_sock_release(struct socket *sock) | |
252 | { | |
253 | struct sock *sk = sock->sk; | |
254 | ||
255 | if (*debug & DEBUG_SOCKET) | |
256 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
257 | if (!sk) | |
258 | return 0; | |
259 | switch (sk->sk_protocol) { | |
260 | case ISDN_P_TE_S0: | |
261 | case ISDN_P_NT_S0: | |
262 | case ISDN_P_TE_E1: | |
263 | case ISDN_P_NT_E1: | |
264 | if (sk->sk_state == MISDN_BOUND) | |
265 | delete_channel(&_pms(sk)->ch); | |
266 | else | |
267 | mISDN_sock_unlink(&data_sockets, sk); | |
268 | break; | |
269 | case ISDN_P_LAPD_TE: | |
270 | case ISDN_P_LAPD_NT: | |
271 | case ISDN_P_B_RAW: | |
272 | case ISDN_P_B_HDLC: | |
273 | case ISDN_P_B_X75SLP: | |
274 | case ISDN_P_B_L2DTMF: | |
275 | case ISDN_P_B_L2DSP: | |
276 | case ISDN_P_B_L2DSPHDLC: | |
277 | delete_channel(&_pms(sk)->ch); | |
278 | mISDN_sock_unlink(&data_sockets, sk); | |
279 | break; | |
280 | } | |
281 | ||
282 | lock_sock(sk); | |
283 | ||
284 | sock_orphan(sk); | |
285 | skb_queue_purge(&sk->sk_receive_queue); | |
286 | ||
287 | release_sock(sk); | |
288 | sock_put(sk); | |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
293 | static int | |
294 | data_sock_ioctl_bound(struct sock *sk, unsigned int cmd, void __user *p) | |
295 | { | |
296 | struct mISDN_ctrl_req cq; | |
e73f6b22 | 297 | int err = -EINVAL, val[2]; |
1b2b03f8 KK |
298 | struct mISDNchannel *bchan, *next; |
299 | ||
300 | lock_sock(sk); | |
301 | if (!_pms(sk)->dev) { | |
302 | err = -ENODEV; | |
303 | goto done; | |
304 | } | |
305 | switch (cmd) { | |
306 | case IMCTRLREQ: | |
307 | if (copy_from_user(&cq, p, sizeof(cq))) { | |
308 | err = -EFAULT; | |
309 | break; | |
310 | } | |
311 | if ((sk->sk_protocol & ~ISDN_P_B_MASK) == ISDN_P_B_START) { | |
312 | list_for_each_entry_safe(bchan, next, | |
313 | &_pms(sk)->dev->bchannels, list) { | |
314 | if (bchan->nr == cq.channel) { | |
315 | err = bchan->ctrl(bchan, | |
316 | CONTROL_CHANNEL, &cq); | |
317 | break; | |
318 | } | |
319 | } | |
320 | } else | |
321 | err = _pms(sk)->dev->D.ctrl(&_pms(sk)->dev->D, | |
322 | CONTROL_CHANNEL, &cq); | |
323 | if (err) | |
324 | break; | |
325 | if (copy_to_user(p, &cq, sizeof(cq))) | |
326 | err = -EFAULT; | |
327 | break; | |
328 | case IMCLEAR_L2: | |
329 | if (sk->sk_protocol != ISDN_P_LAPD_NT) { | |
330 | err = -EINVAL; | |
331 | break; | |
332 | } | |
e73f6b22 AE |
333 | val[0] = cmd; |
334 | if (get_user(val[1], (int __user *)p)) { | |
1b2b03f8 KK |
335 | err = -EFAULT; |
336 | break; | |
337 | } | |
338 | err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, | |
e73f6b22 AE |
339 | CONTROL_CHANNEL, val); |
340 | break; | |
341 | case IMHOLD_L1: | |
342 | if (sk->sk_protocol != ISDN_P_LAPD_NT | |
343 | && sk->sk_protocol != ISDN_P_LAPD_TE) { | |
344 | err = -EINVAL; | |
345 | break; | |
346 | } | |
347 | val[0] = cmd; | |
348 | if (get_user(val[1], (int __user *)p)) { | |
349 | err = -EFAULT; | |
350 | break; | |
351 | } | |
352 | err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, | |
353 | CONTROL_CHANNEL, val); | |
1b2b03f8 KK |
354 | break; |
355 | default: | |
356 | err = -EINVAL; | |
357 | break; | |
358 | } | |
359 | done: | |
360 | release_sock(sk); | |
361 | return err; | |
362 | } | |
363 | ||
364 | static int | |
365 | data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
366 | { | |
367 | int err = 0, id; | |
368 | struct sock *sk = sock->sk; | |
369 | struct mISDNdevice *dev; | |
370 | struct mISDNversion ver; | |
371 | ||
372 | switch (cmd) { | |
373 | case IMGETVERSION: | |
374 | ver.major = MISDN_MAJOR_VERSION; | |
375 | ver.minor = MISDN_MINOR_VERSION; | |
376 | ver.release = MISDN_RELEASE; | |
377 | if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) | |
378 | err = -EFAULT; | |
379 | break; | |
380 | case IMGETCOUNT: | |
381 | id = get_mdevice_count(); | |
382 | if (put_user(id, (int __user *)arg)) | |
383 | err = -EFAULT; | |
384 | break; | |
385 | case IMGETDEVINFO: | |
386 | if (get_user(id, (int __user *)arg)) { | |
387 | err = -EFAULT; | |
388 | break; | |
389 | } | |
390 | dev = get_mdevice(id); | |
391 | if (dev) { | |
392 | struct mISDN_devinfo di; | |
393 | ||
394 | di.id = dev->id; | |
395 | di.Dprotocols = dev->Dprotocols; | |
396 | di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); | |
397 | di.protocol = dev->D.protocol; | |
398 | memcpy(di.channelmap, dev->channelmap, | |
ff4cc1de | 399 | sizeof(di.channelmap)); |
1b2b03f8 | 400 | di.nrbchan = dev->nrbchan; |
837468d1 | 401 | strcpy(di.name, dev_name(&dev->dev)); |
1b2b03f8 KK |
402 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
403 | err = -EFAULT; | |
404 | } else | |
405 | err = -ENODEV; | |
406 | break; | |
407 | default: | |
408 | if (sk->sk_state == MISDN_BOUND) | |
409 | err = data_sock_ioctl_bound(sk, cmd, | |
410 | (void __user *)arg); | |
411 | else | |
412 | err = -ENOTCONN; | |
413 | } | |
414 | return err; | |
415 | } | |
416 | ||
417 | static int data_sock_setsockopt(struct socket *sock, int level, int optname, | |
b7058842 | 418 | char __user *optval, unsigned int len) |
1b2b03f8 KK |
419 | { |
420 | struct sock *sk = sock->sk; | |
421 | int err = 0, opt = 0; | |
422 | ||
423 | if (*debug & DEBUG_SOCKET) | |
424 | printk(KERN_DEBUG "%s(%p, %d, %x, %p, %d)\n", __func__, sock, | |
425 | level, optname, optval, len); | |
426 | ||
427 | lock_sock(sk); | |
428 | ||
429 | switch (optname) { | |
430 | case MISDN_TIME_STAMP: | |
431 | if (get_user(opt, (int __user *)optval)) { | |
432 | err = -EFAULT; | |
433 | break; | |
434 | } | |
435 | ||
436 | if (opt) | |
437 | _pms(sk)->cmask |= MISDN_TIME_STAMP; | |
438 | else | |
439 | _pms(sk)->cmask &= ~MISDN_TIME_STAMP; | |
440 | break; | |
441 | default: | |
442 | err = -ENOPROTOOPT; | |
443 | break; | |
444 | } | |
445 | release_sock(sk); | |
446 | return err; | |
447 | } | |
448 | ||
449 | static int data_sock_getsockopt(struct socket *sock, int level, int optname, | |
450 | char __user *optval, int __user *optlen) | |
451 | { | |
452 | struct sock *sk = sock->sk; | |
453 | int len, opt; | |
454 | ||
455 | if (get_user(len, optlen)) | |
456 | return -EFAULT; | |
457 | ||
458 | switch (optname) { | |
459 | case MISDN_TIME_STAMP: | |
460 | if (_pms(sk)->cmask & MISDN_TIME_STAMP) | |
461 | opt = 1; | |
462 | else | |
463 | opt = 0; | |
464 | ||
465 | if (put_user(opt, optval)) | |
466 | return -EFAULT; | |
467 | break; | |
468 | default: | |
469 | return -ENOPROTOOPT; | |
470 | } | |
471 | ||
472 | return 0; | |
473 | } | |
474 | ||
475 | static int | |
476 | data_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
477 | { | |
478 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; | |
479 | struct sock *sk = sock->sk; | |
1b4d3312 AE |
480 | struct hlist_node *node; |
481 | struct sock *csk; | |
1b2b03f8 KK |
482 | int err = 0; |
483 | ||
484 | if (*debug & DEBUG_SOCKET) | |
485 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
486 | if (addr_len != sizeof(struct sockaddr_mISDN)) | |
487 | return -EINVAL; | |
488 | if (!maddr || maddr->family != AF_ISDN) | |
489 | return -EINVAL; | |
490 | ||
491 | lock_sock(sk); | |
492 | ||
493 | if (_pms(sk)->dev) { | |
494 | err = -EALREADY; | |
495 | goto done; | |
496 | } | |
497 | _pms(sk)->dev = get_mdevice(maddr->dev); | |
498 | if (!_pms(sk)->dev) { | |
499 | err = -ENODEV; | |
500 | goto done; | |
501 | } | |
1b4d3312 | 502 | |
9a812553 AE |
503 | if (sk->sk_protocol < ISDN_P_B_START) { |
504 | read_lock_bh(&data_sockets.lock); | |
505 | sk_for_each(csk, node, &data_sockets.head) { | |
506 | if (sk == csk) | |
507 | continue; | |
508 | if (_pms(csk)->dev != _pms(sk)->dev) | |
509 | continue; | |
510 | if (csk->sk_protocol >= ISDN_P_B_START) | |
511 | continue; | |
512 | if (IS_ISDN_P_TE(csk->sk_protocol) | |
513 | == IS_ISDN_P_TE(sk->sk_protocol)) | |
514 | continue; | |
515 | read_unlock_bh(&data_sockets.lock); | |
516 | err = -EBUSY; | |
517 | goto done; | |
518 | } | |
1b4d3312 | 519 | read_unlock_bh(&data_sockets.lock); |
1b4d3312 | 520 | } |
1b4d3312 | 521 | |
1b2b03f8 KK |
522 | _pms(sk)->ch.send = mISDN_send; |
523 | _pms(sk)->ch.ctrl = mISDN_ctrl; | |
524 | ||
525 | switch (sk->sk_protocol) { | |
526 | case ISDN_P_TE_S0: | |
527 | case ISDN_P_NT_S0: | |
528 | case ISDN_P_TE_E1: | |
529 | case ISDN_P_NT_E1: | |
530 | mISDN_sock_unlink(&data_sockets, sk); | |
531 | err = connect_layer1(_pms(sk)->dev, &_pms(sk)->ch, | |
532 | sk->sk_protocol, maddr); | |
533 | if (err) | |
534 | mISDN_sock_link(&data_sockets, sk); | |
535 | break; | |
536 | case ISDN_P_LAPD_TE: | |
537 | case ISDN_P_LAPD_NT: | |
538 | err = create_l2entity(_pms(sk)->dev, &_pms(sk)->ch, | |
539 | sk->sk_protocol, maddr); | |
540 | break; | |
541 | case ISDN_P_B_RAW: | |
542 | case ISDN_P_B_HDLC: | |
543 | case ISDN_P_B_X75SLP: | |
544 | case ISDN_P_B_L2DTMF: | |
545 | case ISDN_P_B_L2DSP: | |
546 | case ISDN_P_B_L2DSPHDLC: | |
547 | err = connect_Bstack(_pms(sk)->dev, &_pms(sk)->ch, | |
548 | sk->sk_protocol, maddr); | |
549 | break; | |
550 | default: | |
551 | err = -EPROTONOSUPPORT; | |
552 | } | |
553 | if (err) | |
554 | goto done; | |
555 | sk->sk_state = MISDN_BOUND; | |
556 | _pms(sk)->ch.protocol = sk->sk_protocol; | |
557 | ||
558 | done: | |
559 | release_sock(sk); | |
560 | return err; | |
561 | } | |
562 | ||
563 | static int | |
564 | data_sock_getname(struct socket *sock, struct sockaddr *addr, | |
565 | int *addr_len, int peer) | |
566 | { | |
567 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; | |
568 | struct sock *sk = sock->sk; | |
569 | ||
570 | if (!_pms(sk)->dev) | |
571 | return -EBADFD; | |
572 | ||
573 | lock_sock(sk); | |
574 | ||
575 | *addr_len = sizeof(*maddr); | |
576 | maddr->dev = _pms(sk)->dev->id; | |
577 | maddr->channel = _pms(sk)->ch.nr; | |
578 | maddr->sapi = _pms(sk)->ch.addr & 0xff; | |
579 | maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xff; | |
580 | release_sock(sk); | |
581 | return 0; | |
582 | } | |
583 | ||
584 | static const struct proto_ops data_sock_ops = { | |
585 | .family = PF_ISDN, | |
586 | .owner = THIS_MODULE, | |
587 | .release = data_sock_release, | |
588 | .ioctl = data_sock_ioctl, | |
589 | .bind = data_sock_bind, | |
590 | .getname = data_sock_getname, | |
591 | .sendmsg = mISDN_sock_sendmsg, | |
592 | .recvmsg = mISDN_sock_recvmsg, | |
593 | .poll = datagram_poll, | |
594 | .listen = sock_no_listen, | |
595 | .shutdown = sock_no_shutdown, | |
596 | .setsockopt = data_sock_setsockopt, | |
597 | .getsockopt = data_sock_getsockopt, | |
598 | .connect = sock_no_connect, | |
599 | .socketpair = sock_no_socketpair, | |
600 | .accept = sock_no_accept, | |
601 | .mmap = sock_no_mmap | |
602 | }; | |
603 | ||
604 | static int | |
605 | data_sock_create(struct net *net, struct socket *sock, int protocol) | |
606 | { | |
607 | struct sock *sk; | |
608 | ||
609 | if (sock->type != SOCK_DGRAM) | |
610 | return -ESOCKTNOSUPPORT; | |
611 | ||
612 | sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto); | |
613 | if (!sk) | |
614 | return -ENOMEM; | |
615 | ||
616 | sock_init_data(sock, sk); | |
617 | ||
618 | sock->ops = &data_sock_ops; | |
619 | sock->state = SS_UNCONNECTED; | |
620 | sock_reset_flag(sk, SOCK_ZAPPED); | |
621 | ||
622 | sk->sk_protocol = protocol; | |
623 | sk->sk_state = MISDN_OPEN; | |
624 | mISDN_sock_link(&data_sockets, sk); | |
625 | ||
626 | return 0; | |
627 | } | |
628 | ||
629 | static int | |
630 | base_sock_release(struct socket *sock) | |
631 | { | |
632 | struct sock *sk = sock->sk; | |
633 | ||
634 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
635 | if (!sk) | |
636 | return 0; | |
637 | ||
638 | mISDN_sock_unlink(&base_sockets, sk); | |
639 | sock_orphan(sk); | |
640 | sock_put(sk); | |
641 | ||
642 | return 0; | |
643 | } | |
644 | ||
645 | static int | |
646 | base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
647 | { | |
648 | int err = 0, id; | |
649 | struct mISDNdevice *dev; | |
650 | struct mISDNversion ver; | |
651 | ||
652 | switch (cmd) { | |
653 | case IMGETVERSION: | |
654 | ver.major = MISDN_MAJOR_VERSION; | |
655 | ver.minor = MISDN_MINOR_VERSION; | |
656 | ver.release = MISDN_RELEASE; | |
657 | if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) | |
658 | err = -EFAULT; | |
659 | break; | |
660 | case IMGETCOUNT: | |
661 | id = get_mdevice_count(); | |
662 | if (put_user(id, (int __user *)arg)) | |
663 | err = -EFAULT; | |
664 | break; | |
665 | case IMGETDEVINFO: | |
666 | if (get_user(id, (int __user *)arg)) { | |
667 | err = -EFAULT; | |
668 | break; | |
669 | } | |
670 | dev = get_mdevice(id); | |
671 | if (dev) { | |
672 | struct mISDN_devinfo di; | |
673 | ||
674 | di.id = dev->id; | |
675 | di.Dprotocols = dev->Dprotocols; | |
676 | di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); | |
677 | di.protocol = dev->D.protocol; | |
678 | memcpy(di.channelmap, dev->channelmap, | |
ff4cc1de | 679 | sizeof(di.channelmap)); |
1b2b03f8 | 680 | di.nrbchan = dev->nrbchan; |
837468d1 | 681 | strcpy(di.name, dev_name(&dev->dev)); |
1b2b03f8 KK |
682 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
683 | err = -EFAULT; | |
684 | } else | |
685 | err = -ENODEV; | |
686 | break; | |
8b6015f7 MU |
687 | case IMSETDEVNAME: |
688 | { | |
689 | struct mISDN_devrename dn; | |
690 | if (copy_from_user(&dn, (void __user *)arg, | |
691 | sizeof(dn))) { | |
692 | err = -EFAULT; | |
693 | break; | |
694 | } | |
695 | dev = get_mdevice(dn.id); | |
696 | if (dev) | |
837468d1 | 697 | err = device_rename(&dev->dev, dn.name); |
8b6015f7 MU |
698 | else |
699 | err = -ENODEV; | |
700 | } | |
701 | break; | |
1b2b03f8 KK |
702 | default: |
703 | err = -EINVAL; | |
704 | } | |
705 | return err; | |
706 | } | |
707 | ||
708 | static int | |
709 | base_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
710 | { | |
711 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; | |
712 | struct sock *sk = sock->sk; | |
713 | int err = 0; | |
714 | ||
715 | if (!maddr || maddr->family != AF_ISDN) | |
716 | return -EINVAL; | |
717 | ||
718 | lock_sock(sk); | |
719 | ||
720 | if (_pms(sk)->dev) { | |
721 | err = -EALREADY; | |
722 | goto done; | |
723 | } | |
724 | ||
725 | _pms(sk)->dev = get_mdevice(maddr->dev); | |
726 | if (!_pms(sk)->dev) { | |
727 | err = -ENODEV; | |
728 | goto done; | |
729 | } | |
730 | sk->sk_state = MISDN_BOUND; | |
731 | ||
732 | done: | |
733 | release_sock(sk); | |
734 | return err; | |
735 | } | |
736 | ||
737 | static const struct proto_ops base_sock_ops = { | |
738 | .family = PF_ISDN, | |
739 | .owner = THIS_MODULE, | |
740 | .release = base_sock_release, | |
741 | .ioctl = base_sock_ioctl, | |
742 | .bind = base_sock_bind, | |
743 | .getname = sock_no_getname, | |
744 | .sendmsg = sock_no_sendmsg, | |
745 | .recvmsg = sock_no_recvmsg, | |
746 | .poll = sock_no_poll, | |
747 | .listen = sock_no_listen, | |
748 | .shutdown = sock_no_shutdown, | |
749 | .setsockopt = sock_no_setsockopt, | |
750 | .getsockopt = sock_no_getsockopt, | |
751 | .connect = sock_no_connect, | |
752 | .socketpair = sock_no_socketpair, | |
753 | .accept = sock_no_accept, | |
754 | .mmap = sock_no_mmap | |
755 | }; | |
756 | ||
757 | ||
758 | static int | |
759 | base_sock_create(struct net *net, struct socket *sock, int protocol) | |
760 | { | |
761 | struct sock *sk; | |
762 | ||
763 | if (sock->type != SOCK_RAW) | |
764 | return -ESOCKTNOSUPPORT; | |
765 | ||
766 | sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto); | |
767 | if (!sk) | |
768 | return -ENOMEM; | |
769 | ||
770 | sock_init_data(sock, sk); | |
771 | sock->ops = &base_sock_ops; | |
772 | sock->state = SS_UNCONNECTED; | |
773 | sock_reset_flag(sk, SOCK_ZAPPED); | |
774 | sk->sk_protocol = protocol; | |
775 | sk->sk_state = MISDN_OPEN; | |
776 | mISDN_sock_link(&base_sockets, sk); | |
777 | ||
778 | return 0; | |
779 | } | |
780 | ||
781 | static int | |
782 | mISDN_sock_create(struct net *net, struct socket *sock, int proto) | |
783 | { | |
784 | int err = -EPROTONOSUPPORT; | |
785 | ||
786 | switch (proto) { | |
787 | case ISDN_P_BASE: | |
788 | err = base_sock_create(net, sock, proto); | |
789 | break; | |
790 | case ISDN_P_TE_S0: | |
791 | case ISDN_P_NT_S0: | |
792 | case ISDN_P_TE_E1: | |
793 | case ISDN_P_NT_E1: | |
794 | case ISDN_P_LAPD_TE: | |
795 | case ISDN_P_LAPD_NT: | |
796 | case ISDN_P_B_RAW: | |
797 | case ISDN_P_B_HDLC: | |
798 | case ISDN_P_B_X75SLP: | |
799 | case ISDN_P_B_L2DTMF: | |
800 | case ISDN_P_B_L2DSP: | |
801 | case ISDN_P_B_L2DSPHDLC: | |
802 | err = data_sock_create(net, sock, proto); | |
803 | break; | |
804 | default: | |
805 | return err; | |
806 | } | |
807 | ||
808 | return err; | |
809 | } | |
810 | ||
ec1b4cf7 | 811 | static const struct net_proto_family mISDN_sock_family_ops = { |
1b2b03f8 KK |
812 | .owner = THIS_MODULE, |
813 | .family = PF_ISDN, | |
814 | .create = mISDN_sock_create, | |
815 | }; | |
816 | ||
817 | int | |
818 | misdn_sock_init(u_int *deb) | |
819 | { | |
820 | int err; | |
821 | ||
822 | debug = deb; | |
823 | err = sock_register(&mISDN_sock_family_ops); | |
824 | if (err) | |
825 | printk(KERN_ERR "%s: error(%d)\n", __func__, err); | |
826 | return err; | |
827 | } | |
828 | ||
829 | void | |
830 | misdn_sock_cleanup(void) | |
831 | { | |
832 | sock_unregister(PF_ISDN); | |
833 | } | |
834 |