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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> | |
5a0e3ad6 | 19 | #include <linux/slab.h> |
1b2b03f8 KK |
20 | #include "core.h" |
21 | ||
dfa96ec1 | 22 | static u_int *debug; |
1b2b03f8 KK |
23 | |
24 | static struct proto mISDN_proto = { | |
25 | .name = "misdn", | |
26 | .owner = THIS_MODULE, | |
27 | .obj_size = sizeof(struct mISDN_sock) | |
28 | }; | |
29 | ||
30 | #define _pms(sk) ((struct mISDN_sock *)sk) | |
31 | ||
32 | static struct mISDN_sock_list data_sockets = { | |
33 | .lock = __RW_LOCK_UNLOCKED(data_sockets.lock) | |
34 | }; | |
35 | ||
36 | static struct mISDN_sock_list base_sockets = { | |
37 | .lock = __RW_LOCK_UNLOCKED(base_sockets.lock) | |
38 | }; | |
39 | ||
40 | #define L2_HEADER_LEN 4 | |
41 | ||
42 | static inline struct sk_buff * | |
43 | _l2_alloc_skb(unsigned int len, gfp_t gfp_mask) | |
44 | { | |
45 | struct sk_buff *skb; | |
46 | ||
47 | skb = alloc_skb(len + L2_HEADER_LEN, gfp_mask); | |
48 | if (likely(skb)) | |
49 | skb_reserve(skb, L2_HEADER_LEN); | |
50 | return skb; | |
51 | } | |
52 | ||
53 | static void | |
54 | mISDN_sock_link(struct mISDN_sock_list *l, struct sock *sk) | |
55 | { | |
56 | write_lock_bh(&l->lock); | |
57 | sk_add_node(sk, &l->head); | |
58 | write_unlock_bh(&l->lock); | |
59 | } | |
60 | ||
61 | static void mISDN_sock_unlink(struct mISDN_sock_list *l, struct sock *sk) | |
62 | { | |
63 | write_lock_bh(&l->lock); | |
64 | sk_del_node_init(sk); | |
65 | write_unlock_bh(&l->lock); | |
66 | } | |
67 | ||
68 | static int | |
69 | mISDN_send(struct mISDNchannel *ch, struct sk_buff *skb) | |
70 | { | |
71 | struct mISDN_sock *msk; | |
72 | int err; | |
73 | ||
74 | msk = container_of(ch, struct mISDN_sock, ch); | |
75 | if (*debug & DEBUG_SOCKET) | |
76 | printk(KERN_DEBUG "%s len %d %p\n", __func__, skb->len, skb); | |
77 | if (msk->sk.sk_state == MISDN_CLOSED) | |
78 | return -EUNATCH; | |
79 | __net_timestamp(skb); | |
80 | err = sock_queue_rcv_skb(&msk->sk, skb); | |
81 | if (err) | |
82 | printk(KERN_WARNING "%s: error %d\n", __func__, err); | |
83 | return err; | |
84 | } | |
85 | ||
86 | static int | |
87 | mISDN_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg) | |
88 | { | |
89 | struct mISDN_sock *msk; | |
90 | ||
91 | msk = container_of(ch, struct mISDN_sock, ch); | |
92 | if (*debug & DEBUG_SOCKET) | |
93 | printk(KERN_DEBUG "%s(%p, %x, %p)\n", __func__, ch, cmd, arg); | |
94 | switch (cmd) { | |
95 | case CLOSE_CHANNEL: | |
96 | msk->sk.sk_state = MISDN_CLOSED; | |
97 | break; | |
98 | } | |
99 | return 0; | |
100 | } | |
101 | ||
102 | static inline void | |
103 | mISDN_sock_cmsg(struct sock *sk, struct msghdr *msg, struct sk_buff *skb) | |
104 | { | |
105 | struct timeval tv; | |
106 | ||
107 | if (_pms(sk)->cmask & MISDN_TIME_STAMP) { | |
108 | skb_get_timestamp(skb, &tv); | |
109 | put_cmsg(msg, SOL_MISDN, MISDN_TIME_STAMP, sizeof(tv), &tv); | |
110 | } | |
111 | } | |
112 | ||
113 | static int | |
114 | mISDN_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
115 | struct msghdr *msg, size_t len, int flags) | |
116 | { | |
117 | struct sk_buff *skb; | |
118 | struct sock *sk = sock->sk; | |
119 | struct sockaddr_mISDN *maddr; | |
120 | ||
121 | int copied, err; | |
122 | ||
123 | if (*debug & DEBUG_SOCKET) | |
124 | printk(KERN_DEBUG "%s: len %d, flags %x ch.nr %d, proto %x\n", | |
125 | __func__, (int)len, flags, _pms(sk)->ch.nr, | |
126 | sk->sk_protocol); | |
127 | if (flags & (MSG_OOB)) | |
128 | return -EOPNOTSUPP; | |
129 | ||
130 | if (sk->sk_state == MISDN_CLOSED) | |
131 | return 0; | |
132 | ||
133 | skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &err); | |
134 | if (!skb) | |
135 | return err; | |
136 | ||
137 | if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) { | |
138 | msg->msg_namelen = sizeof(struct sockaddr_mISDN); | |
139 | maddr = (struct sockaddr_mISDN *)msg->msg_name; | |
140 | maddr->family = AF_ISDN; | |
141 | maddr->dev = _pms(sk)->dev->id; | |
142 | if ((sk->sk_protocol == ISDN_P_LAPD_TE) || | |
143 | (sk->sk_protocol == ISDN_P_LAPD_NT)) { | |
144 | maddr->channel = (mISDN_HEAD_ID(skb) >> 16) & 0xff; | |
145 | maddr->tei = (mISDN_HEAD_ID(skb) >> 8) & 0xff; | |
146 | maddr->sapi = mISDN_HEAD_ID(skb) & 0xff; | |
147 | } else { | |
148 | maddr->channel = _pms(sk)->ch.nr; | |
149 | maddr->sapi = _pms(sk)->ch.addr & 0xFF; | |
150 | maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xFF; | |
151 | } | |
152 | } else { | |
153 | if (msg->msg_namelen) | |
154 | printk(KERN_WARNING "%s: too small namelen %d\n", | |
155 | __func__, msg->msg_namelen); | |
156 | msg->msg_namelen = 0; | |
157 | } | |
158 | ||
159 | copied = skb->len + MISDN_HEADER_LEN; | |
160 | if (len < copied) { | |
161 | if (flags & MSG_PEEK) | |
162 | atomic_dec(&skb->users); | |
163 | else | |
164 | skb_queue_head(&sk->sk_receive_queue, skb); | |
165 | return -ENOSPC; | |
166 | } | |
167 | memcpy(skb_push(skb, MISDN_HEADER_LEN), mISDN_HEAD_P(skb), | |
168 | MISDN_HEADER_LEN); | |
169 | ||
170 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); | |
171 | ||
172 | mISDN_sock_cmsg(sk, msg, skb); | |
173 | ||
174 | skb_free_datagram(sk, skb); | |
175 | ||
176 | return err ? : copied; | |
177 | } | |
178 | ||
179 | static int | |
180 | mISDN_sock_sendmsg(struct kiocb *iocb, struct socket *sock, | |
181 | struct msghdr *msg, size_t len) | |
182 | { | |
183 | struct sock *sk = sock->sk; | |
184 | struct sk_buff *skb; | |
185 | int err = -ENOMEM; | |
186 | struct sockaddr_mISDN *maddr; | |
187 | ||
188 | if (*debug & DEBUG_SOCKET) | |
189 | printk(KERN_DEBUG "%s: len %d flags %x ch %d proto %x\n", | |
190 | __func__, (int)len, msg->msg_flags, _pms(sk)->ch.nr, | |
191 | sk->sk_protocol); | |
192 | ||
193 | if (msg->msg_flags & MSG_OOB) | |
194 | return -EOPNOTSUPP; | |
195 | ||
196 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) | |
197 | return -EINVAL; | |
198 | ||
199 | if (len < MISDN_HEADER_LEN) | |
200 | return -EINVAL; | |
201 | ||
202 | if (sk->sk_state != MISDN_BOUND) | |
203 | return -EBADFD; | |
204 | ||
205 | lock_sock(sk); | |
206 | ||
207 | skb = _l2_alloc_skb(len, GFP_KERNEL); | |
208 | if (!skb) | |
209 | goto done; | |
210 | ||
211 | if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { | |
212 | err = -EFAULT; | |
5df3b8bc | 213 | goto done; |
1b2b03f8 KK |
214 | } |
215 | ||
216 | memcpy(mISDN_HEAD_P(skb), skb->data, MISDN_HEADER_LEN); | |
217 | skb_pull(skb, MISDN_HEADER_LEN); | |
218 | ||
219 | if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) { | |
220 | /* if we have a address, we use it */ | |
221 | maddr = (struct sockaddr_mISDN *)msg->msg_name; | |
222 | mISDN_HEAD_ID(skb) = maddr->channel; | |
223 | } else { /* use default for L2 messages */ | |
224 | if ((sk->sk_protocol == ISDN_P_LAPD_TE) || | |
225 | (sk->sk_protocol == ISDN_P_LAPD_NT)) | |
eac74af9 | 226 | mISDN_HEAD_ID(skb) = _pms(sk)->ch.nr; |
1b2b03f8 KK |
227 | } |
228 | ||
229 | if (*debug & DEBUG_SOCKET) | |
230 | printk(KERN_DEBUG "%s: ID:%x\n", | |
231 | __func__, mISDN_HEAD_ID(skb)); | |
232 | ||
233 | err = -ENODEV; | |
5df3b8bc KK |
234 | if (!_pms(sk)->ch.peer) |
235 | goto done; | |
236 | err = _pms(sk)->ch.recv(_pms(sk)->ch.peer, skb); | |
237 | if (err) | |
238 | goto done; | |
239 | else { | |
240 | skb = NULL; | |
241 | err = len; | |
242 | } | |
1b2b03f8 KK |
243 | |
244 | done: | |
5df3b8bc KK |
245 | if (skb) |
246 | kfree_skb(skb); | |
1b2b03f8 KK |
247 | release_sock(sk); |
248 | return err; | |
1b2b03f8 KK |
249 | } |
250 | ||
251 | static int | |
252 | data_sock_release(struct socket *sock) | |
253 | { | |
254 | struct sock *sk = sock->sk; | |
255 | ||
256 | if (*debug & DEBUG_SOCKET) | |
257 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
258 | if (!sk) | |
259 | return 0; | |
260 | switch (sk->sk_protocol) { | |
261 | case ISDN_P_TE_S0: | |
262 | case ISDN_P_NT_S0: | |
263 | case ISDN_P_TE_E1: | |
264 | case ISDN_P_NT_E1: | |
265 | if (sk->sk_state == MISDN_BOUND) | |
266 | delete_channel(&_pms(sk)->ch); | |
267 | else | |
268 | mISDN_sock_unlink(&data_sockets, sk); | |
269 | break; | |
270 | case ISDN_P_LAPD_TE: | |
271 | case ISDN_P_LAPD_NT: | |
272 | case ISDN_P_B_RAW: | |
273 | case ISDN_P_B_HDLC: | |
274 | case ISDN_P_B_X75SLP: | |
275 | case ISDN_P_B_L2DTMF: | |
276 | case ISDN_P_B_L2DSP: | |
277 | case ISDN_P_B_L2DSPHDLC: | |
278 | delete_channel(&_pms(sk)->ch); | |
279 | mISDN_sock_unlink(&data_sockets, sk); | |
280 | break; | |
281 | } | |
282 | ||
283 | lock_sock(sk); | |
284 | ||
285 | sock_orphan(sk); | |
286 | skb_queue_purge(&sk->sk_receive_queue); | |
287 | ||
288 | release_sock(sk); | |
289 | sock_put(sk); | |
290 | ||
291 | return 0; | |
292 | } | |
293 | ||
294 | static int | |
295 | data_sock_ioctl_bound(struct sock *sk, unsigned int cmd, void __user *p) | |
296 | { | |
297 | struct mISDN_ctrl_req cq; | |
e73f6b22 | 298 | int err = -EINVAL, val[2]; |
1b2b03f8 KK |
299 | struct mISDNchannel *bchan, *next; |
300 | ||
301 | lock_sock(sk); | |
302 | if (!_pms(sk)->dev) { | |
303 | err = -ENODEV; | |
304 | goto done; | |
305 | } | |
306 | switch (cmd) { | |
307 | case IMCTRLREQ: | |
308 | if (copy_from_user(&cq, p, sizeof(cq))) { | |
309 | err = -EFAULT; | |
310 | break; | |
311 | } | |
312 | if ((sk->sk_protocol & ~ISDN_P_B_MASK) == ISDN_P_B_START) { | |
313 | list_for_each_entry_safe(bchan, next, | |
314 | &_pms(sk)->dev->bchannels, list) { | |
315 | if (bchan->nr == cq.channel) { | |
316 | err = bchan->ctrl(bchan, | |
317 | CONTROL_CHANNEL, &cq); | |
318 | break; | |
319 | } | |
320 | } | |
321 | } else | |
322 | err = _pms(sk)->dev->D.ctrl(&_pms(sk)->dev->D, | |
323 | CONTROL_CHANNEL, &cq); | |
324 | if (err) | |
325 | break; | |
326 | if (copy_to_user(p, &cq, sizeof(cq))) | |
327 | err = -EFAULT; | |
328 | break; | |
329 | case IMCLEAR_L2: | |
330 | if (sk->sk_protocol != ISDN_P_LAPD_NT) { | |
331 | err = -EINVAL; | |
332 | break; | |
333 | } | |
e73f6b22 AE |
334 | val[0] = cmd; |
335 | if (get_user(val[1], (int __user *)p)) { | |
1b2b03f8 KK |
336 | err = -EFAULT; |
337 | break; | |
338 | } | |
339 | err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, | |
e73f6b22 AE |
340 | CONTROL_CHANNEL, val); |
341 | break; | |
342 | case IMHOLD_L1: | |
343 | if (sk->sk_protocol != ISDN_P_LAPD_NT | |
344 | && sk->sk_protocol != ISDN_P_LAPD_TE) { | |
345 | err = -EINVAL; | |
346 | break; | |
347 | } | |
348 | val[0] = cmd; | |
349 | if (get_user(val[1], (int __user *)p)) { | |
350 | err = -EFAULT; | |
351 | break; | |
352 | } | |
353 | err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, | |
354 | CONTROL_CHANNEL, val); | |
1b2b03f8 KK |
355 | break; |
356 | default: | |
357 | err = -EINVAL; | |
358 | break; | |
359 | } | |
360 | done: | |
361 | release_sock(sk); | |
362 | return err; | |
363 | } | |
364 | ||
365 | static int | |
366 | data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
367 | { | |
368 | int err = 0, id; | |
369 | struct sock *sk = sock->sk; | |
370 | struct mISDNdevice *dev; | |
371 | struct mISDNversion ver; | |
372 | ||
373 | switch (cmd) { | |
374 | case IMGETVERSION: | |
375 | ver.major = MISDN_MAJOR_VERSION; | |
376 | ver.minor = MISDN_MINOR_VERSION; | |
377 | ver.release = MISDN_RELEASE; | |
378 | if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) | |
379 | err = -EFAULT; | |
380 | break; | |
381 | case IMGETCOUNT: | |
382 | id = get_mdevice_count(); | |
383 | if (put_user(id, (int __user *)arg)) | |
384 | err = -EFAULT; | |
385 | break; | |
386 | case IMGETDEVINFO: | |
387 | if (get_user(id, (int __user *)arg)) { | |
388 | err = -EFAULT; | |
389 | break; | |
390 | } | |
391 | dev = get_mdevice(id); | |
392 | if (dev) { | |
393 | struct mISDN_devinfo di; | |
394 | ||
395 | di.id = dev->id; | |
396 | di.Dprotocols = dev->Dprotocols; | |
397 | di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); | |
398 | di.protocol = dev->D.protocol; | |
399 | memcpy(di.channelmap, dev->channelmap, | |
ff4cc1de | 400 | sizeof(di.channelmap)); |
1b2b03f8 | 401 | di.nrbchan = dev->nrbchan; |
837468d1 | 402 | strcpy(di.name, dev_name(&dev->dev)); |
1b2b03f8 KK |
403 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
404 | err = -EFAULT; | |
405 | } else | |
406 | err = -ENODEV; | |
407 | break; | |
408 | default: | |
409 | if (sk->sk_state == MISDN_BOUND) | |
410 | err = data_sock_ioctl_bound(sk, cmd, | |
411 | (void __user *)arg); | |
412 | else | |
413 | err = -ENOTCONN; | |
414 | } | |
415 | return err; | |
416 | } | |
417 | ||
418 | static int data_sock_setsockopt(struct socket *sock, int level, int optname, | |
b7058842 | 419 | char __user *optval, unsigned int len) |
1b2b03f8 KK |
420 | { |
421 | struct sock *sk = sock->sk; | |
422 | int err = 0, opt = 0; | |
423 | ||
424 | if (*debug & DEBUG_SOCKET) | |
425 | printk(KERN_DEBUG "%s(%p, %d, %x, %p, %d)\n", __func__, sock, | |
426 | level, optname, optval, len); | |
427 | ||
428 | lock_sock(sk); | |
429 | ||
430 | switch (optname) { | |
431 | case MISDN_TIME_STAMP: | |
432 | if (get_user(opt, (int __user *)optval)) { | |
433 | err = -EFAULT; | |
434 | break; | |
435 | } | |
436 | ||
437 | if (opt) | |
438 | _pms(sk)->cmask |= MISDN_TIME_STAMP; | |
439 | else | |
440 | _pms(sk)->cmask &= ~MISDN_TIME_STAMP; | |
441 | break; | |
442 | default: | |
443 | err = -ENOPROTOOPT; | |
444 | break; | |
445 | } | |
446 | release_sock(sk); | |
447 | return err; | |
448 | } | |
449 | ||
450 | static int data_sock_getsockopt(struct socket *sock, int level, int optname, | |
451 | char __user *optval, int __user *optlen) | |
452 | { | |
453 | struct sock *sk = sock->sk; | |
454 | int len, opt; | |
455 | ||
456 | if (get_user(len, optlen)) | |
457 | return -EFAULT; | |
458 | ||
459 | switch (optname) { | |
460 | case MISDN_TIME_STAMP: | |
461 | if (_pms(sk)->cmask & MISDN_TIME_STAMP) | |
462 | opt = 1; | |
463 | else | |
464 | opt = 0; | |
465 | ||
466 | if (put_user(opt, optval)) | |
467 | return -EFAULT; | |
468 | break; | |
469 | default: | |
470 | return -ENOPROTOOPT; | |
471 | } | |
472 | ||
473 | return 0; | |
474 | } | |
475 | ||
476 | static int | |
477 | data_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
478 | { | |
479 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; | |
480 | struct sock *sk = sock->sk; | |
1b4d3312 AE |
481 | struct hlist_node *node; |
482 | struct sock *csk; | |
1b2b03f8 KK |
483 | int err = 0; |
484 | ||
485 | if (*debug & DEBUG_SOCKET) | |
486 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
487 | if (addr_len != sizeof(struct sockaddr_mISDN)) | |
488 | return -EINVAL; | |
489 | if (!maddr || maddr->family != AF_ISDN) | |
490 | return -EINVAL; | |
491 | ||
492 | lock_sock(sk); | |
493 | ||
494 | if (_pms(sk)->dev) { | |
495 | err = -EALREADY; | |
496 | goto done; | |
497 | } | |
498 | _pms(sk)->dev = get_mdevice(maddr->dev); | |
499 | if (!_pms(sk)->dev) { | |
500 | err = -ENODEV; | |
501 | goto done; | |
502 | } | |
1b4d3312 | 503 | |
9a812553 AE |
504 | if (sk->sk_protocol < ISDN_P_B_START) { |
505 | read_lock_bh(&data_sockets.lock); | |
506 | sk_for_each(csk, node, &data_sockets.head) { | |
507 | if (sk == csk) | |
508 | continue; | |
509 | if (_pms(csk)->dev != _pms(sk)->dev) | |
510 | continue; | |
511 | if (csk->sk_protocol >= ISDN_P_B_START) | |
512 | continue; | |
513 | if (IS_ISDN_P_TE(csk->sk_protocol) | |
514 | == IS_ISDN_P_TE(sk->sk_protocol)) | |
515 | continue; | |
516 | read_unlock_bh(&data_sockets.lock); | |
517 | err = -EBUSY; | |
518 | goto done; | |
519 | } | |
1b4d3312 | 520 | read_unlock_bh(&data_sockets.lock); |
1b4d3312 | 521 | } |
1b4d3312 | 522 | |
1b2b03f8 KK |
523 | _pms(sk)->ch.send = mISDN_send; |
524 | _pms(sk)->ch.ctrl = mISDN_ctrl; | |
525 | ||
526 | switch (sk->sk_protocol) { | |
527 | case ISDN_P_TE_S0: | |
528 | case ISDN_P_NT_S0: | |
529 | case ISDN_P_TE_E1: | |
530 | case ISDN_P_NT_E1: | |
531 | mISDN_sock_unlink(&data_sockets, sk); | |
532 | err = connect_layer1(_pms(sk)->dev, &_pms(sk)->ch, | |
533 | sk->sk_protocol, maddr); | |
534 | if (err) | |
535 | mISDN_sock_link(&data_sockets, sk); | |
536 | break; | |
537 | case ISDN_P_LAPD_TE: | |
538 | case ISDN_P_LAPD_NT: | |
539 | err = create_l2entity(_pms(sk)->dev, &_pms(sk)->ch, | |
540 | sk->sk_protocol, maddr); | |
541 | break; | |
542 | case ISDN_P_B_RAW: | |
543 | case ISDN_P_B_HDLC: | |
544 | case ISDN_P_B_X75SLP: | |
545 | case ISDN_P_B_L2DTMF: | |
546 | case ISDN_P_B_L2DSP: | |
547 | case ISDN_P_B_L2DSPHDLC: | |
548 | err = connect_Bstack(_pms(sk)->dev, &_pms(sk)->ch, | |
549 | sk->sk_protocol, maddr); | |
550 | break; | |
551 | default: | |
552 | err = -EPROTONOSUPPORT; | |
553 | } | |
554 | if (err) | |
555 | goto done; | |
556 | sk->sk_state = MISDN_BOUND; | |
557 | _pms(sk)->ch.protocol = sk->sk_protocol; | |
558 | ||
559 | done: | |
560 | release_sock(sk); | |
561 | return err; | |
562 | } | |
563 | ||
564 | static int | |
565 | data_sock_getname(struct socket *sock, struct sockaddr *addr, | |
566 | int *addr_len, int peer) | |
567 | { | |
568 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; | |
569 | struct sock *sk = sock->sk; | |
570 | ||
571 | if (!_pms(sk)->dev) | |
572 | return -EBADFD; | |
573 | ||
574 | lock_sock(sk); | |
575 | ||
576 | *addr_len = sizeof(*maddr); | |
577 | maddr->dev = _pms(sk)->dev->id; | |
578 | maddr->channel = _pms(sk)->ch.nr; | |
579 | maddr->sapi = _pms(sk)->ch.addr & 0xff; | |
580 | maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xff; | |
581 | release_sock(sk); | |
582 | return 0; | |
583 | } | |
584 | ||
585 | static const struct proto_ops data_sock_ops = { | |
586 | .family = PF_ISDN, | |
587 | .owner = THIS_MODULE, | |
588 | .release = data_sock_release, | |
589 | .ioctl = data_sock_ioctl, | |
590 | .bind = data_sock_bind, | |
591 | .getname = data_sock_getname, | |
592 | .sendmsg = mISDN_sock_sendmsg, | |
593 | .recvmsg = mISDN_sock_recvmsg, | |
594 | .poll = datagram_poll, | |
595 | .listen = sock_no_listen, | |
596 | .shutdown = sock_no_shutdown, | |
597 | .setsockopt = data_sock_setsockopt, | |
598 | .getsockopt = data_sock_getsockopt, | |
599 | .connect = sock_no_connect, | |
600 | .socketpair = sock_no_socketpair, | |
601 | .accept = sock_no_accept, | |
602 | .mmap = sock_no_mmap | |
603 | }; | |
604 | ||
605 | static int | |
606 | data_sock_create(struct net *net, struct socket *sock, int protocol) | |
607 | { | |
608 | struct sock *sk; | |
609 | ||
610 | if (sock->type != SOCK_DGRAM) | |
611 | return -ESOCKTNOSUPPORT; | |
612 | ||
613 | sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto); | |
614 | if (!sk) | |
615 | return -ENOMEM; | |
616 | ||
617 | sock_init_data(sock, sk); | |
618 | ||
619 | sock->ops = &data_sock_ops; | |
620 | sock->state = SS_UNCONNECTED; | |
621 | sock_reset_flag(sk, SOCK_ZAPPED); | |
622 | ||
623 | sk->sk_protocol = protocol; | |
624 | sk->sk_state = MISDN_OPEN; | |
625 | mISDN_sock_link(&data_sockets, sk); | |
626 | ||
627 | return 0; | |
628 | } | |
629 | ||
630 | static int | |
631 | base_sock_release(struct socket *sock) | |
632 | { | |
633 | struct sock *sk = sock->sk; | |
634 | ||
635 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
636 | if (!sk) | |
637 | return 0; | |
638 | ||
639 | mISDN_sock_unlink(&base_sockets, sk); | |
640 | sock_orphan(sk); | |
641 | sock_put(sk); | |
642 | ||
643 | return 0; | |
644 | } | |
645 | ||
646 | static int | |
647 | base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
648 | { | |
649 | int err = 0, id; | |
650 | struct mISDNdevice *dev; | |
651 | struct mISDNversion ver; | |
652 | ||
653 | switch (cmd) { | |
654 | case IMGETVERSION: | |
655 | ver.major = MISDN_MAJOR_VERSION; | |
656 | ver.minor = MISDN_MINOR_VERSION; | |
657 | ver.release = MISDN_RELEASE; | |
658 | if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) | |
659 | err = -EFAULT; | |
660 | break; | |
661 | case IMGETCOUNT: | |
662 | id = get_mdevice_count(); | |
663 | if (put_user(id, (int __user *)arg)) | |
664 | err = -EFAULT; | |
665 | break; | |
666 | case IMGETDEVINFO: | |
667 | if (get_user(id, (int __user *)arg)) { | |
668 | err = -EFAULT; | |
669 | break; | |
670 | } | |
671 | dev = get_mdevice(id); | |
672 | if (dev) { | |
673 | struct mISDN_devinfo di; | |
674 | ||
675 | di.id = dev->id; | |
676 | di.Dprotocols = dev->Dprotocols; | |
677 | di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); | |
678 | di.protocol = dev->D.protocol; | |
679 | memcpy(di.channelmap, dev->channelmap, | |
ff4cc1de | 680 | sizeof(di.channelmap)); |
1b2b03f8 | 681 | di.nrbchan = dev->nrbchan; |
837468d1 | 682 | strcpy(di.name, dev_name(&dev->dev)); |
1b2b03f8 KK |
683 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
684 | err = -EFAULT; | |
685 | } else | |
686 | err = -ENODEV; | |
687 | break; | |
8b6015f7 MU |
688 | case IMSETDEVNAME: |
689 | { | |
690 | struct mISDN_devrename dn; | |
691 | if (copy_from_user(&dn, (void __user *)arg, | |
692 | sizeof(dn))) { | |
693 | err = -EFAULT; | |
694 | break; | |
695 | } | |
696 | dev = get_mdevice(dn.id); | |
697 | if (dev) | |
837468d1 | 698 | err = device_rename(&dev->dev, dn.name); |
8b6015f7 MU |
699 | else |
700 | err = -ENODEV; | |
701 | } | |
702 | break; | |
1b2b03f8 KK |
703 | default: |
704 | err = -EINVAL; | |
705 | } | |
706 | return err; | |
707 | } | |
708 | ||
709 | static int | |
710 | base_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
711 | { | |
712 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; | |
713 | struct sock *sk = sock->sk; | |
714 | int err = 0; | |
715 | ||
716 | if (!maddr || maddr->family != AF_ISDN) | |
717 | return -EINVAL; | |
718 | ||
719 | lock_sock(sk); | |
720 | ||
721 | if (_pms(sk)->dev) { | |
722 | err = -EALREADY; | |
723 | goto done; | |
724 | } | |
725 | ||
726 | _pms(sk)->dev = get_mdevice(maddr->dev); | |
727 | if (!_pms(sk)->dev) { | |
728 | err = -ENODEV; | |
729 | goto done; | |
730 | } | |
731 | sk->sk_state = MISDN_BOUND; | |
732 | ||
733 | done: | |
734 | release_sock(sk); | |
735 | return err; | |
736 | } | |
737 | ||
738 | static const struct proto_ops base_sock_ops = { | |
739 | .family = PF_ISDN, | |
740 | .owner = THIS_MODULE, | |
741 | .release = base_sock_release, | |
742 | .ioctl = base_sock_ioctl, | |
743 | .bind = base_sock_bind, | |
744 | .getname = sock_no_getname, | |
745 | .sendmsg = sock_no_sendmsg, | |
746 | .recvmsg = sock_no_recvmsg, | |
747 | .poll = sock_no_poll, | |
748 | .listen = sock_no_listen, | |
749 | .shutdown = sock_no_shutdown, | |
750 | .setsockopt = sock_no_setsockopt, | |
751 | .getsockopt = sock_no_getsockopt, | |
752 | .connect = sock_no_connect, | |
753 | .socketpair = sock_no_socketpair, | |
754 | .accept = sock_no_accept, | |
755 | .mmap = sock_no_mmap | |
756 | }; | |
757 | ||
758 | ||
759 | static int | |
760 | base_sock_create(struct net *net, struct socket *sock, int protocol) | |
761 | { | |
762 | struct sock *sk; | |
763 | ||
764 | if (sock->type != SOCK_RAW) | |
765 | return -ESOCKTNOSUPPORT; | |
766 | ||
767 | sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto); | |
768 | if (!sk) | |
769 | return -ENOMEM; | |
770 | ||
771 | sock_init_data(sock, sk); | |
772 | sock->ops = &base_sock_ops; | |
773 | sock->state = SS_UNCONNECTED; | |
774 | sock_reset_flag(sk, SOCK_ZAPPED); | |
775 | sk->sk_protocol = protocol; | |
776 | sk->sk_state = MISDN_OPEN; | |
777 | mISDN_sock_link(&base_sockets, sk); | |
778 | ||
779 | return 0; | |
780 | } | |
781 | ||
782 | static int | |
3f378b68 | 783 | mISDN_sock_create(struct net *net, struct socket *sock, int proto, int kern) |
1b2b03f8 KK |
784 | { |
785 | int err = -EPROTONOSUPPORT; | |
786 | ||
787 | switch (proto) { | |
788 | case ISDN_P_BASE: | |
789 | err = base_sock_create(net, sock, proto); | |
790 | break; | |
791 | case ISDN_P_TE_S0: | |
792 | case ISDN_P_NT_S0: | |
793 | case ISDN_P_TE_E1: | |
794 | case ISDN_P_NT_E1: | |
795 | case ISDN_P_LAPD_TE: | |
796 | case ISDN_P_LAPD_NT: | |
797 | case ISDN_P_B_RAW: | |
798 | case ISDN_P_B_HDLC: | |
799 | case ISDN_P_B_X75SLP: | |
800 | case ISDN_P_B_L2DTMF: | |
801 | case ISDN_P_B_L2DSP: | |
802 | case ISDN_P_B_L2DSPHDLC: | |
803 | err = data_sock_create(net, sock, proto); | |
804 | break; | |
805 | default: | |
806 | return err; | |
807 | } | |
808 | ||
809 | return err; | |
810 | } | |
811 | ||
ec1b4cf7 | 812 | static const struct net_proto_family mISDN_sock_family_ops = { |
1b2b03f8 KK |
813 | .owner = THIS_MODULE, |
814 | .family = PF_ISDN, | |
815 | .create = mISDN_sock_create, | |
816 | }; | |
817 | ||
818 | int | |
819 | misdn_sock_init(u_int *deb) | |
820 | { | |
821 | int err; | |
822 | ||
823 | debug = deb; | |
824 | err = sock_register(&mISDN_sock_family_ops); | |
825 | if (err) | |
826 | printk(KERN_ERR "%s: error(%d)\n", __func__, err); | |
827 | return err; | |
828 | } | |
829 | ||
830 | void | |
831 | misdn_sock_cleanup(void) | |
832 | { | |
833 | sock_unregister(PF_ISDN); | |
834 | } | |
835 |