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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> |
5d76fc21 | 20 | #include <linux/export.h> |
1b2b03f8 KK |
21 | #include "core.h" |
22 | ||
dfa96ec1 | 23 | static u_int *debug; |
1b2b03f8 KK |
24 | |
25 | static struct proto mISDN_proto = { | |
26 | .name = "misdn", | |
27 | .owner = THIS_MODULE, | |
28 | .obj_size = sizeof(struct mISDN_sock) | |
29 | }; | |
30 | ||
31 | #define _pms(sk) ((struct mISDN_sock *)sk) | |
32 | ||
33 | static struct mISDN_sock_list data_sockets = { | |
34 | .lock = __RW_LOCK_UNLOCKED(data_sockets.lock) | |
35 | }; | |
36 | ||
37 | static struct mISDN_sock_list base_sockets = { | |
38 | .lock = __RW_LOCK_UNLOCKED(base_sockets.lock) | |
39 | }; | |
40 | ||
41 | #define L2_HEADER_LEN 4 | |
42 | ||
43 | static inline struct sk_buff * | |
44 | _l2_alloc_skb(unsigned int len, gfp_t gfp_mask) | |
45 | { | |
46 | struct sk_buff *skb; | |
47 | ||
48 | skb = alloc_skb(len + L2_HEADER_LEN, gfp_mask); | |
49 | if (likely(skb)) | |
50 | skb_reserve(skb, L2_HEADER_LEN); | |
51 | return skb; | |
52 | } | |
53 | ||
54 | static void | |
55 | mISDN_sock_link(struct mISDN_sock_list *l, struct sock *sk) | |
56 | { | |
57 | write_lock_bh(&l->lock); | |
58 | sk_add_node(sk, &l->head); | |
59 | write_unlock_bh(&l->lock); | |
60 | } | |
61 | ||
62 | static void mISDN_sock_unlink(struct mISDN_sock_list *l, struct sock *sk) | |
63 | { | |
64 | write_lock_bh(&l->lock); | |
65 | sk_del_node_init(sk); | |
66 | write_unlock_bh(&l->lock); | |
67 | } | |
68 | ||
69 | static int | |
70 | mISDN_send(struct mISDNchannel *ch, struct sk_buff *skb) | |
71 | { | |
72 | struct mISDN_sock *msk; | |
73 | int err; | |
74 | ||
75 | msk = container_of(ch, struct mISDN_sock, ch); | |
76 | if (*debug & DEBUG_SOCKET) | |
77 | printk(KERN_DEBUG "%s len %d %p\n", __func__, skb->len, skb); | |
78 | if (msk->sk.sk_state == MISDN_CLOSED) | |
79 | return -EUNATCH; | |
80 | __net_timestamp(skb); | |
81 | err = sock_queue_rcv_skb(&msk->sk, skb); | |
82 | if (err) | |
83 | printk(KERN_WARNING "%s: error %d\n", __func__, err); | |
84 | return err; | |
85 | } | |
86 | ||
87 | static int | |
88 | mISDN_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg) | |
89 | { | |
90 | struct mISDN_sock *msk; | |
91 | ||
92 | msk = container_of(ch, struct mISDN_sock, ch); | |
93 | if (*debug & DEBUG_SOCKET) | |
94 | printk(KERN_DEBUG "%s(%p, %x, %p)\n", __func__, ch, cmd, arg); | |
95 | switch (cmd) { | |
96 | case CLOSE_CHANNEL: | |
97 | msk->sk.sk_state = MISDN_CLOSED; | |
98 | break; | |
99 | } | |
100 | return 0; | |
101 | } | |
102 | ||
103 | static inline void | |
104 | mISDN_sock_cmsg(struct sock *sk, struct msghdr *msg, struct sk_buff *skb) | |
105 | { | |
106 | struct timeval tv; | |
107 | ||
108 | if (_pms(sk)->cmask & MISDN_TIME_STAMP) { | |
109 | skb_get_timestamp(skb, &tv); | |
110 | put_cmsg(msg, SOL_MISDN, MISDN_TIME_STAMP, sizeof(tv), &tv); | |
111 | } | |
112 | } | |
113 | ||
114 | static int | |
115 | mISDN_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
475be4d8 | 116 | struct msghdr *msg, size_t len, int flags) |
1b2b03f8 KK |
117 | { |
118 | struct sk_buff *skb; | |
119 | struct sock *sk = sock->sk; | |
120 | struct sockaddr_mISDN *maddr; | |
121 | ||
122 | int copied, err; | |
123 | ||
124 | if (*debug & DEBUG_SOCKET) | |
125 | printk(KERN_DEBUG "%s: len %d, flags %x ch.nr %d, proto %x\n", | |
475be4d8 JP |
126 | __func__, (int)len, flags, _pms(sk)->ch.nr, |
127 | sk->sk_protocol); | |
1b2b03f8 KK |
128 | if (flags & (MSG_OOB)) |
129 | return -EOPNOTSUPP; | |
130 | ||
131 | if (sk->sk_state == MISDN_CLOSED) | |
132 | return 0; | |
133 | ||
134 | skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &err); | |
135 | if (!skb) | |
136 | return err; | |
137 | ||
138 | if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) { | |
139 | msg->msg_namelen = sizeof(struct sockaddr_mISDN); | |
140 | maddr = (struct sockaddr_mISDN *)msg->msg_name; | |
141 | maddr->family = AF_ISDN; | |
142 | maddr->dev = _pms(sk)->dev->id; | |
143 | if ((sk->sk_protocol == ISDN_P_LAPD_TE) || | |
144 | (sk->sk_protocol == ISDN_P_LAPD_NT)) { | |
145 | maddr->channel = (mISDN_HEAD_ID(skb) >> 16) & 0xff; | |
146 | maddr->tei = (mISDN_HEAD_ID(skb) >> 8) & 0xff; | |
147 | maddr->sapi = mISDN_HEAD_ID(skb) & 0xff; | |
148 | } else { | |
149 | maddr->channel = _pms(sk)->ch.nr; | |
150 | maddr->sapi = _pms(sk)->ch.addr & 0xFF; | |
151 | maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xFF; | |
152 | } | |
153 | } else { | |
154 | if (msg->msg_namelen) | |
155 | printk(KERN_WARNING "%s: too small namelen %d\n", | |
475be4d8 | 156 | __func__, msg->msg_namelen); |
1b2b03f8 KK |
157 | msg->msg_namelen = 0; |
158 | } | |
159 | ||
160 | copied = skb->len + MISDN_HEADER_LEN; | |
161 | if (len < copied) { | |
162 | if (flags & MSG_PEEK) | |
163 | atomic_dec(&skb->users); | |
164 | else | |
165 | skb_queue_head(&sk->sk_receive_queue, skb); | |
166 | return -ENOSPC; | |
167 | } | |
168 | memcpy(skb_push(skb, MISDN_HEADER_LEN), mISDN_HEAD_P(skb), | |
475be4d8 | 169 | MISDN_HEADER_LEN); |
1b2b03f8 KK |
170 | |
171 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); | |
172 | ||
173 | mISDN_sock_cmsg(sk, msg, skb); | |
174 | ||
175 | skb_free_datagram(sk, skb); | |
176 | ||
177 | return err ? : copied; | |
178 | } | |
179 | ||
180 | static int | |
181 | mISDN_sock_sendmsg(struct kiocb *iocb, struct socket *sock, | |
475be4d8 | 182 | struct msghdr *msg, size_t len) |
1b2b03f8 KK |
183 | { |
184 | struct sock *sk = sock->sk; | |
185 | struct sk_buff *skb; | |
186 | int err = -ENOMEM; | |
187 | struct sockaddr_mISDN *maddr; | |
188 | ||
189 | if (*debug & DEBUG_SOCKET) | |
190 | printk(KERN_DEBUG "%s: len %d flags %x ch %d proto %x\n", | |
475be4d8 JP |
191 | __func__, (int)len, msg->msg_flags, _pms(sk)->ch.nr, |
192 | sk->sk_protocol); | |
1b2b03f8 KK |
193 | |
194 | if (msg->msg_flags & MSG_OOB) | |
195 | return -EOPNOTSUPP; | |
196 | ||
475be4d8 | 197 | if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_NOSIGNAL | MSG_ERRQUEUE)) |
1b2b03f8 KK |
198 | return -EINVAL; |
199 | ||
200 | if (len < MISDN_HEADER_LEN) | |
201 | return -EINVAL; | |
202 | ||
203 | if (sk->sk_state != MISDN_BOUND) | |
204 | return -EBADFD; | |
205 | ||
206 | lock_sock(sk); | |
207 | ||
208 | skb = _l2_alloc_skb(len, GFP_KERNEL); | |
209 | if (!skb) | |
210 | goto done; | |
211 | ||
212 | if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { | |
213 | err = -EFAULT; | |
5df3b8bc | 214 | goto done; |
1b2b03f8 KK |
215 | } |
216 | ||
217 | memcpy(mISDN_HEAD_P(skb), skb->data, MISDN_HEADER_LEN); | |
218 | skb_pull(skb, MISDN_HEADER_LEN); | |
219 | ||
220 | if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) { | |
221 | /* if we have a address, we use it */ | |
222 | maddr = (struct sockaddr_mISDN *)msg->msg_name; | |
223 | mISDN_HEAD_ID(skb) = maddr->channel; | |
224 | } else { /* use default for L2 messages */ | |
225 | if ((sk->sk_protocol == ISDN_P_LAPD_TE) || | |
226 | (sk->sk_protocol == ISDN_P_LAPD_NT)) | |
eac74af9 | 227 | mISDN_HEAD_ID(skb) = _pms(sk)->ch.nr; |
1b2b03f8 KK |
228 | } |
229 | ||
230 | if (*debug & DEBUG_SOCKET) | |
231 | printk(KERN_DEBUG "%s: ID:%x\n", | |
475be4d8 | 232 | __func__, mISDN_HEAD_ID(skb)); |
1b2b03f8 KK |
233 | |
234 | err = -ENODEV; | |
5df3b8bc KK |
235 | if (!_pms(sk)->ch.peer) |
236 | goto done; | |
237 | err = _pms(sk)->ch.recv(_pms(sk)->ch.peer, skb); | |
238 | if (err) | |
239 | goto done; | |
240 | else { | |
241 | skb = NULL; | |
242 | err = len; | |
243 | } | |
1b2b03f8 KK |
244 | |
245 | done: | |
5df3b8bc KK |
246 | if (skb) |
247 | kfree_skb(skb); | |
1b2b03f8 KK |
248 | release_sock(sk); |
249 | return err; | |
1b2b03f8 KK |
250 | } |
251 | ||
252 | static int | |
253 | data_sock_release(struct socket *sock) | |
254 | { | |
255 | struct sock *sk = sock->sk; | |
256 | ||
257 | if (*debug & DEBUG_SOCKET) | |
258 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
259 | if (!sk) | |
260 | return 0; | |
261 | switch (sk->sk_protocol) { | |
262 | case ISDN_P_TE_S0: | |
263 | case ISDN_P_NT_S0: | |
264 | case ISDN_P_TE_E1: | |
265 | case ISDN_P_NT_E1: | |
266 | if (sk->sk_state == MISDN_BOUND) | |
267 | delete_channel(&_pms(sk)->ch); | |
268 | else | |
269 | mISDN_sock_unlink(&data_sockets, sk); | |
270 | break; | |
271 | case ISDN_P_LAPD_TE: | |
272 | case ISDN_P_LAPD_NT: | |
273 | case ISDN_P_B_RAW: | |
274 | case ISDN_P_B_HDLC: | |
275 | case ISDN_P_B_X75SLP: | |
276 | case ISDN_P_B_L2DTMF: | |
277 | case ISDN_P_B_L2DSP: | |
278 | case ISDN_P_B_L2DSPHDLC: | |
279 | delete_channel(&_pms(sk)->ch); | |
280 | mISDN_sock_unlink(&data_sockets, sk); | |
281 | break; | |
282 | } | |
283 | ||
284 | lock_sock(sk); | |
285 | ||
286 | sock_orphan(sk); | |
287 | skb_queue_purge(&sk->sk_receive_queue); | |
288 | ||
289 | release_sock(sk); | |
290 | sock_put(sk); | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
295 | static int | |
296 | data_sock_ioctl_bound(struct sock *sk, unsigned int cmd, void __user *p) | |
297 | { | |
298 | struct mISDN_ctrl_req cq; | |
e73f6b22 | 299 | int err = -EINVAL, val[2]; |
1b2b03f8 KK |
300 | struct mISDNchannel *bchan, *next; |
301 | ||
302 | lock_sock(sk); | |
303 | if (!_pms(sk)->dev) { | |
304 | err = -ENODEV; | |
305 | goto done; | |
306 | } | |
307 | switch (cmd) { | |
308 | case IMCTRLREQ: | |
309 | if (copy_from_user(&cq, p, sizeof(cq))) { | |
310 | err = -EFAULT; | |
311 | break; | |
312 | } | |
313 | if ((sk->sk_protocol & ~ISDN_P_B_MASK) == ISDN_P_B_START) { | |
314 | list_for_each_entry_safe(bchan, next, | |
475be4d8 | 315 | &_pms(sk)->dev->bchannels, list) { |
1b2b03f8 KK |
316 | if (bchan->nr == cq.channel) { |
317 | err = bchan->ctrl(bchan, | |
475be4d8 | 318 | CONTROL_CHANNEL, &cq); |
1b2b03f8 KK |
319 | break; |
320 | } | |
321 | } | |
322 | } else | |
323 | err = _pms(sk)->dev->D.ctrl(&_pms(sk)->dev->D, | |
475be4d8 | 324 | CONTROL_CHANNEL, &cq); |
1b2b03f8 KK |
325 | if (err) |
326 | break; | |
327 | if (copy_to_user(p, &cq, sizeof(cq))) | |
328 | err = -EFAULT; | |
329 | break; | |
330 | case IMCLEAR_L2: | |
331 | if (sk->sk_protocol != ISDN_P_LAPD_NT) { | |
332 | err = -EINVAL; | |
333 | break; | |
334 | } | |
e73f6b22 AE |
335 | val[0] = cmd; |
336 | if (get_user(val[1], (int __user *)p)) { | |
1b2b03f8 KK |
337 | err = -EFAULT; |
338 | break; | |
339 | } | |
340 | err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, | |
475be4d8 | 341 | CONTROL_CHANNEL, val); |
e73f6b22 AE |
342 | break; |
343 | case IMHOLD_L1: | |
344 | if (sk->sk_protocol != ISDN_P_LAPD_NT | |
475be4d8 | 345 | && sk->sk_protocol != ISDN_P_LAPD_TE) { |
e73f6b22 AE |
346 | err = -EINVAL; |
347 | break; | |
348 | } | |
349 | val[0] = cmd; | |
350 | if (get_user(val[1], (int __user *)p)) { | |
351 | err = -EFAULT; | |
352 | break; | |
353 | } | |
354 | err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, | |
475be4d8 | 355 | CONTROL_CHANNEL, val); |
1b2b03f8 KK |
356 | break; |
357 | default: | |
358 | err = -EINVAL; | |
359 | break; | |
360 | } | |
361 | done: | |
362 | release_sock(sk); | |
363 | return err; | |
364 | } | |
365 | ||
366 | static int | |
367 | data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
368 | { | |
475be4d8 | 369 | int err = 0, id; |
1b2b03f8 KK |
370 | struct sock *sk = sock->sk; |
371 | struct mISDNdevice *dev; | |
372 | struct mISDNversion ver; | |
373 | ||
374 | switch (cmd) { | |
375 | case IMGETVERSION: | |
376 | ver.major = MISDN_MAJOR_VERSION; | |
377 | ver.minor = MISDN_MINOR_VERSION; | |
378 | ver.release = MISDN_RELEASE; | |
379 | if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) | |
380 | err = -EFAULT; | |
381 | break; | |
382 | case IMGETCOUNT: | |
383 | id = get_mdevice_count(); | |
384 | if (put_user(id, (int __user *)arg)) | |
385 | err = -EFAULT; | |
386 | break; | |
387 | case IMGETDEVINFO: | |
388 | if (get_user(id, (int __user *)arg)) { | |
389 | err = -EFAULT; | |
390 | break; | |
391 | } | |
392 | dev = get_mdevice(id); | |
393 | if (dev) { | |
394 | struct mISDN_devinfo di; | |
395 | ||
ce384d91 | 396 | memset(&di, 0, sizeof(di)); |
1b2b03f8 KK |
397 | di.id = dev->id; |
398 | di.Dprotocols = dev->Dprotocols; | |
399 | di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); | |
400 | di.protocol = dev->D.protocol; | |
401 | memcpy(di.channelmap, dev->channelmap, | |
475be4d8 | 402 | sizeof(di.channelmap)); |
1b2b03f8 | 403 | di.nrbchan = dev->nrbchan; |
837468d1 | 404 | strcpy(di.name, dev_name(&dev->dev)); |
1b2b03f8 KK |
405 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
406 | err = -EFAULT; | |
407 | } else | |
408 | err = -ENODEV; | |
409 | break; | |
410 | default: | |
411 | if (sk->sk_state == MISDN_BOUND) | |
412 | err = data_sock_ioctl_bound(sk, cmd, | |
475be4d8 | 413 | (void __user *)arg); |
1b2b03f8 KK |
414 | else |
415 | err = -ENOTCONN; | |
416 | } | |
417 | return err; | |
418 | } | |
419 | ||
420 | static int data_sock_setsockopt(struct socket *sock, int level, int optname, | |
475be4d8 | 421 | char __user *optval, unsigned int len) |
1b2b03f8 KK |
422 | { |
423 | struct sock *sk = sock->sk; | |
424 | int err = 0, opt = 0; | |
425 | ||
426 | if (*debug & DEBUG_SOCKET) | |
427 | printk(KERN_DEBUG "%s(%p, %d, %x, %p, %d)\n", __func__, sock, | |
475be4d8 | 428 | level, optname, optval, len); |
1b2b03f8 KK |
429 | |
430 | lock_sock(sk); | |
431 | ||
432 | switch (optname) { | |
433 | case MISDN_TIME_STAMP: | |
434 | if (get_user(opt, (int __user *)optval)) { | |
435 | err = -EFAULT; | |
436 | break; | |
437 | } | |
438 | ||
439 | if (opt) | |
440 | _pms(sk)->cmask |= MISDN_TIME_STAMP; | |
441 | else | |
442 | _pms(sk)->cmask &= ~MISDN_TIME_STAMP; | |
443 | break; | |
444 | default: | |
445 | err = -ENOPROTOOPT; | |
446 | break; | |
447 | } | |
448 | release_sock(sk); | |
449 | return err; | |
450 | } | |
451 | ||
452 | static int data_sock_getsockopt(struct socket *sock, int level, int optname, | |
475be4d8 | 453 | char __user *optval, int __user *optlen) |
1b2b03f8 KK |
454 | { |
455 | struct sock *sk = sock->sk; | |
456 | int len, opt; | |
457 | ||
458 | if (get_user(len, optlen)) | |
459 | return -EFAULT; | |
460 | ||
81b424d9 DM |
461 | if (len != sizeof(char)) |
462 | return -EINVAL; | |
463 | ||
1b2b03f8 KK |
464 | switch (optname) { |
465 | case MISDN_TIME_STAMP: | |
466 | if (_pms(sk)->cmask & MISDN_TIME_STAMP) | |
467 | opt = 1; | |
468 | else | |
469 | opt = 0; | |
470 | ||
471 | if (put_user(opt, optval)) | |
472 | return -EFAULT; | |
473 | break; | |
474 | default: | |
475 | return -ENOPROTOOPT; | |
476 | } | |
477 | ||
478 | return 0; | |
479 | } | |
480 | ||
481 | static int | |
482 | data_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
483 | { | |
484 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; | |
485 | struct sock *sk = sock->sk; | |
1b4d3312 AE |
486 | struct hlist_node *node; |
487 | struct sock *csk; | |
1b2b03f8 KK |
488 | int err = 0; |
489 | ||
490 | if (*debug & DEBUG_SOCKET) | |
491 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
492 | if (addr_len != sizeof(struct sockaddr_mISDN)) | |
493 | return -EINVAL; | |
494 | if (!maddr || maddr->family != AF_ISDN) | |
495 | return -EINVAL; | |
496 | ||
497 | lock_sock(sk); | |
498 | ||
499 | if (_pms(sk)->dev) { | |
500 | err = -EALREADY; | |
501 | goto done; | |
502 | } | |
503 | _pms(sk)->dev = get_mdevice(maddr->dev); | |
504 | if (!_pms(sk)->dev) { | |
505 | err = -ENODEV; | |
506 | goto done; | |
507 | } | |
1b4d3312 | 508 | |
9a812553 AE |
509 | if (sk->sk_protocol < ISDN_P_B_START) { |
510 | read_lock_bh(&data_sockets.lock); | |
511 | sk_for_each(csk, node, &data_sockets.head) { | |
512 | if (sk == csk) | |
513 | continue; | |
514 | if (_pms(csk)->dev != _pms(sk)->dev) | |
515 | continue; | |
516 | if (csk->sk_protocol >= ISDN_P_B_START) | |
517 | continue; | |
518 | if (IS_ISDN_P_TE(csk->sk_protocol) | |
475be4d8 | 519 | == IS_ISDN_P_TE(sk->sk_protocol)) |
9a812553 AE |
520 | continue; |
521 | read_unlock_bh(&data_sockets.lock); | |
522 | err = -EBUSY; | |
523 | goto done; | |
524 | } | |
1b4d3312 | 525 | read_unlock_bh(&data_sockets.lock); |
1b4d3312 | 526 | } |
1b4d3312 | 527 | |
1b2b03f8 KK |
528 | _pms(sk)->ch.send = mISDN_send; |
529 | _pms(sk)->ch.ctrl = mISDN_ctrl; | |
530 | ||
531 | switch (sk->sk_protocol) { | |
532 | case ISDN_P_TE_S0: | |
533 | case ISDN_P_NT_S0: | |
534 | case ISDN_P_TE_E1: | |
535 | case ISDN_P_NT_E1: | |
536 | mISDN_sock_unlink(&data_sockets, sk); | |
537 | err = connect_layer1(_pms(sk)->dev, &_pms(sk)->ch, | |
475be4d8 | 538 | sk->sk_protocol, maddr); |
1b2b03f8 KK |
539 | if (err) |
540 | mISDN_sock_link(&data_sockets, sk); | |
541 | break; | |
542 | case ISDN_P_LAPD_TE: | |
543 | case ISDN_P_LAPD_NT: | |
544 | err = create_l2entity(_pms(sk)->dev, &_pms(sk)->ch, | |
475be4d8 | 545 | sk->sk_protocol, maddr); |
1b2b03f8 KK |
546 | break; |
547 | case ISDN_P_B_RAW: | |
548 | case ISDN_P_B_HDLC: | |
549 | case ISDN_P_B_X75SLP: | |
550 | case ISDN_P_B_L2DTMF: | |
551 | case ISDN_P_B_L2DSP: | |
552 | case ISDN_P_B_L2DSPHDLC: | |
553 | err = connect_Bstack(_pms(sk)->dev, &_pms(sk)->ch, | |
475be4d8 | 554 | sk->sk_protocol, maddr); |
1b2b03f8 KK |
555 | break; |
556 | default: | |
557 | err = -EPROTONOSUPPORT; | |
558 | } | |
559 | if (err) | |
560 | goto done; | |
561 | sk->sk_state = MISDN_BOUND; | |
562 | _pms(sk)->ch.protocol = sk->sk_protocol; | |
563 | ||
564 | done: | |
565 | release_sock(sk); | |
566 | return err; | |
567 | } | |
568 | ||
569 | static int | |
570 | data_sock_getname(struct socket *sock, struct sockaddr *addr, | |
475be4d8 | 571 | int *addr_len, int peer) |
1b2b03f8 | 572 | { |
475be4d8 | 573 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; |
1b2b03f8 KK |
574 | struct sock *sk = sock->sk; |
575 | ||
576 | if (!_pms(sk)->dev) | |
577 | return -EBADFD; | |
578 | ||
579 | lock_sock(sk); | |
580 | ||
581 | *addr_len = sizeof(*maddr); | |
582 | maddr->dev = _pms(sk)->dev->id; | |
583 | maddr->channel = _pms(sk)->ch.nr; | |
584 | maddr->sapi = _pms(sk)->ch.addr & 0xff; | |
585 | maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xff; | |
586 | release_sock(sk); | |
587 | return 0; | |
588 | } | |
589 | ||
590 | static const struct proto_ops data_sock_ops = { | |
591 | .family = PF_ISDN, | |
592 | .owner = THIS_MODULE, | |
593 | .release = data_sock_release, | |
594 | .ioctl = data_sock_ioctl, | |
595 | .bind = data_sock_bind, | |
596 | .getname = data_sock_getname, | |
597 | .sendmsg = mISDN_sock_sendmsg, | |
598 | .recvmsg = mISDN_sock_recvmsg, | |
599 | .poll = datagram_poll, | |
600 | .listen = sock_no_listen, | |
601 | .shutdown = sock_no_shutdown, | |
602 | .setsockopt = data_sock_setsockopt, | |
603 | .getsockopt = data_sock_getsockopt, | |
604 | .connect = sock_no_connect, | |
605 | .socketpair = sock_no_socketpair, | |
606 | .accept = sock_no_accept, | |
607 | .mmap = sock_no_mmap | |
608 | }; | |
609 | ||
610 | static int | |
611 | data_sock_create(struct net *net, struct socket *sock, int protocol) | |
612 | { | |
613 | struct sock *sk; | |
614 | ||
615 | if (sock->type != SOCK_DGRAM) | |
616 | return -ESOCKTNOSUPPORT; | |
617 | ||
618 | sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto); | |
619 | if (!sk) | |
620 | return -ENOMEM; | |
621 | ||
622 | sock_init_data(sock, sk); | |
623 | ||
624 | sock->ops = &data_sock_ops; | |
625 | sock->state = SS_UNCONNECTED; | |
626 | sock_reset_flag(sk, SOCK_ZAPPED); | |
627 | ||
628 | sk->sk_protocol = protocol; | |
629 | sk->sk_state = MISDN_OPEN; | |
630 | mISDN_sock_link(&data_sockets, sk); | |
631 | ||
632 | return 0; | |
633 | } | |
634 | ||
635 | static int | |
636 | base_sock_release(struct socket *sock) | |
637 | { | |
638 | struct sock *sk = sock->sk; | |
639 | ||
640 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
641 | if (!sk) | |
642 | return 0; | |
643 | ||
644 | mISDN_sock_unlink(&base_sockets, sk); | |
645 | sock_orphan(sk); | |
646 | sock_put(sk); | |
647 | ||
648 | return 0; | |
649 | } | |
650 | ||
651 | static int | |
652 | base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
653 | { | |
475be4d8 | 654 | int err = 0, id; |
1b2b03f8 KK |
655 | struct mISDNdevice *dev; |
656 | struct mISDNversion ver; | |
657 | ||
658 | switch (cmd) { | |
659 | case IMGETVERSION: | |
660 | ver.major = MISDN_MAJOR_VERSION; | |
661 | ver.minor = MISDN_MINOR_VERSION; | |
662 | ver.release = MISDN_RELEASE; | |
663 | if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) | |
664 | err = -EFAULT; | |
665 | break; | |
666 | case IMGETCOUNT: | |
667 | id = get_mdevice_count(); | |
668 | if (put_user(id, (int __user *)arg)) | |
669 | err = -EFAULT; | |
670 | break; | |
671 | case IMGETDEVINFO: | |
672 | if (get_user(id, (int __user *)arg)) { | |
673 | err = -EFAULT; | |
674 | break; | |
675 | } | |
676 | dev = get_mdevice(id); | |
677 | if (dev) { | |
678 | struct mISDN_devinfo di; | |
679 | ||
ce384d91 | 680 | memset(&di, 0, sizeof(di)); |
1b2b03f8 KK |
681 | di.id = dev->id; |
682 | di.Dprotocols = dev->Dprotocols; | |
683 | di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); | |
684 | di.protocol = dev->D.protocol; | |
685 | memcpy(di.channelmap, dev->channelmap, | |
475be4d8 | 686 | sizeof(di.channelmap)); |
1b2b03f8 | 687 | di.nrbchan = dev->nrbchan; |
837468d1 | 688 | strcpy(di.name, dev_name(&dev->dev)); |
1b2b03f8 KK |
689 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
690 | err = -EFAULT; | |
691 | } else | |
692 | err = -ENODEV; | |
693 | break; | |
8b6015f7 | 694 | case IMSETDEVNAME: |
475be4d8 JP |
695 | { |
696 | struct mISDN_devrename dn; | |
697 | if (copy_from_user(&dn, (void __user *)arg, | |
698 | sizeof(dn))) { | |
699 | err = -EFAULT; | |
700 | break; | |
8b6015f7 | 701 | } |
475be4d8 JP |
702 | dev = get_mdevice(dn.id); |
703 | if (dev) | |
704 | err = device_rename(&dev->dev, dn.name); | |
705 | else | |
706 | err = -ENODEV; | |
707 | } | |
708 | break; | |
1b2b03f8 KK |
709 | default: |
710 | err = -EINVAL; | |
711 | } | |
712 | return err; | |
713 | } | |
714 | ||
715 | static int | |
716 | base_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
717 | { | |
718 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; | |
719 | struct sock *sk = sock->sk; | |
720 | int err = 0; | |
721 | ||
722 | if (!maddr || maddr->family != AF_ISDN) | |
723 | return -EINVAL; | |
724 | ||
725 | lock_sock(sk); | |
726 | ||
727 | if (_pms(sk)->dev) { | |
728 | err = -EALREADY; | |
729 | goto done; | |
730 | } | |
731 | ||
732 | _pms(sk)->dev = get_mdevice(maddr->dev); | |
733 | if (!_pms(sk)->dev) { | |
734 | err = -ENODEV; | |
735 | goto done; | |
736 | } | |
737 | sk->sk_state = MISDN_BOUND; | |
738 | ||
739 | done: | |
740 | release_sock(sk); | |
741 | return err; | |
742 | } | |
743 | ||
744 | static const struct proto_ops base_sock_ops = { | |
745 | .family = PF_ISDN, | |
746 | .owner = THIS_MODULE, | |
747 | .release = base_sock_release, | |
748 | .ioctl = base_sock_ioctl, | |
749 | .bind = base_sock_bind, | |
750 | .getname = sock_no_getname, | |
751 | .sendmsg = sock_no_sendmsg, | |
752 | .recvmsg = sock_no_recvmsg, | |
753 | .poll = sock_no_poll, | |
754 | .listen = sock_no_listen, | |
755 | .shutdown = sock_no_shutdown, | |
756 | .setsockopt = sock_no_setsockopt, | |
757 | .getsockopt = sock_no_getsockopt, | |
758 | .connect = sock_no_connect, | |
759 | .socketpair = sock_no_socketpair, | |
760 | .accept = sock_no_accept, | |
761 | .mmap = sock_no_mmap | |
762 | }; | |
763 | ||
764 | ||
765 | static int | |
766 | base_sock_create(struct net *net, struct socket *sock, int protocol) | |
767 | { | |
768 | struct sock *sk; | |
769 | ||
770 | if (sock->type != SOCK_RAW) | |
771 | return -ESOCKTNOSUPPORT; | |
772 | ||
773 | sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto); | |
774 | if (!sk) | |
775 | return -ENOMEM; | |
776 | ||
777 | sock_init_data(sock, sk); | |
778 | sock->ops = &base_sock_ops; | |
779 | sock->state = SS_UNCONNECTED; | |
780 | sock_reset_flag(sk, SOCK_ZAPPED); | |
781 | sk->sk_protocol = protocol; | |
782 | sk->sk_state = MISDN_OPEN; | |
783 | mISDN_sock_link(&base_sockets, sk); | |
784 | ||
785 | return 0; | |
786 | } | |
787 | ||
788 | static int | |
3f378b68 | 789 | mISDN_sock_create(struct net *net, struct socket *sock, int proto, int kern) |
1b2b03f8 KK |
790 | { |
791 | int err = -EPROTONOSUPPORT; | |
792 | ||
475be4d8 | 793 | switch (proto) { |
1b2b03f8 KK |
794 | case ISDN_P_BASE: |
795 | err = base_sock_create(net, sock, proto); | |
796 | break; | |
797 | case ISDN_P_TE_S0: | |
798 | case ISDN_P_NT_S0: | |
799 | case ISDN_P_TE_E1: | |
800 | case ISDN_P_NT_E1: | |
801 | case ISDN_P_LAPD_TE: | |
802 | case ISDN_P_LAPD_NT: | |
803 | case ISDN_P_B_RAW: | |
804 | case ISDN_P_B_HDLC: | |
805 | case ISDN_P_B_X75SLP: | |
806 | case ISDN_P_B_L2DTMF: | |
807 | case ISDN_P_B_L2DSP: | |
808 | case ISDN_P_B_L2DSPHDLC: | |
809 | err = data_sock_create(net, sock, proto); | |
810 | break; | |
811 | default: | |
812 | return err; | |
813 | } | |
814 | ||
815 | return err; | |
816 | } | |
817 | ||
ec1b4cf7 | 818 | static const struct net_proto_family mISDN_sock_family_ops = { |
1b2b03f8 KK |
819 | .owner = THIS_MODULE, |
820 | .family = PF_ISDN, | |
821 | .create = mISDN_sock_create, | |
822 | }; | |
823 | ||
824 | int | |
825 | misdn_sock_init(u_int *deb) | |
826 | { | |
827 | int err; | |
828 | ||
829 | debug = deb; | |
830 | err = sock_register(&mISDN_sock_family_ops); | |
831 | if (err) | |
832 | printk(KERN_ERR "%s: error(%d)\n", __func__, err); | |
833 | return err; | |
834 | } | |
835 | ||
836 | void | |
837 | misdn_sock_cleanup(void) | |
838 | { | |
839 | sock_unregister(PF_ISDN); | |
840 | } |