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> | |
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; | |
1b2b03f8 KK |
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", | |
475be4d8 JP |
125 | __func__, (int)len, flags, _pms(sk)->ch.nr, |
126 | sk->sk_protocol); | |
1b2b03f8 KK |
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 | ||
f3d33426 | 137 | if (msg->msg_name) { |
342dfc30 | 138 | DECLARE_SOCKADDR(struct sockaddr_mISDN *, maddr, msg->msg_name); |
f3d33426 | 139 | |
1b2b03f8 KK |
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 | } | |
f3d33426 | 152 | msg->msg_namelen = sizeof(*maddr); |
1b2b03f8 KK |
153 | } |
154 | ||
155 | copied = skb->len + MISDN_HEADER_LEN; | |
156 | if (len < copied) { | |
157 | if (flags & MSG_PEEK) | |
158 | atomic_dec(&skb->users); | |
159 | else | |
160 | skb_queue_head(&sk->sk_receive_queue, skb); | |
161 | return -ENOSPC; | |
162 | } | |
163 | memcpy(skb_push(skb, MISDN_HEADER_LEN), mISDN_HEAD_P(skb), | |
475be4d8 | 164 | MISDN_HEADER_LEN); |
1b2b03f8 | 165 | |
51f3d02b | 166 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
1b2b03f8 KK |
167 | |
168 | mISDN_sock_cmsg(sk, msg, skb); | |
169 | ||
170 | skb_free_datagram(sk, skb); | |
171 | ||
172 | return err ? : copied; | |
173 | } | |
174 | ||
175 | static int | |
176 | mISDN_sock_sendmsg(struct kiocb *iocb, struct socket *sock, | |
475be4d8 | 177 | struct msghdr *msg, size_t len) |
1b2b03f8 KK |
178 | { |
179 | struct sock *sk = sock->sk; | |
180 | struct sk_buff *skb; | |
181 | int err = -ENOMEM; | |
1b2b03f8 KK |
182 | |
183 | if (*debug & DEBUG_SOCKET) | |
184 | printk(KERN_DEBUG "%s: len %d flags %x ch %d proto %x\n", | |
475be4d8 JP |
185 | __func__, (int)len, msg->msg_flags, _pms(sk)->ch.nr, |
186 | sk->sk_protocol); | |
1b2b03f8 KK |
187 | |
188 | if (msg->msg_flags & MSG_OOB) | |
189 | return -EOPNOTSUPP; | |
190 | ||
475be4d8 | 191 | if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_NOSIGNAL | MSG_ERRQUEUE)) |
1b2b03f8 KK |
192 | return -EINVAL; |
193 | ||
194 | if (len < MISDN_HEADER_LEN) | |
195 | return -EINVAL; | |
196 | ||
197 | if (sk->sk_state != MISDN_BOUND) | |
198 | return -EBADFD; | |
199 | ||
200 | lock_sock(sk); | |
201 | ||
202 | skb = _l2_alloc_skb(len, GFP_KERNEL); | |
203 | if (!skb) | |
204 | goto done; | |
205 | ||
206 | if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { | |
207 | err = -EFAULT; | |
5df3b8bc | 208 | goto done; |
1b2b03f8 KK |
209 | } |
210 | ||
211 | memcpy(mISDN_HEAD_P(skb), skb->data, MISDN_HEADER_LEN); | |
212 | skb_pull(skb, MISDN_HEADER_LEN); | |
213 | ||
214 | if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) { | |
215 | /* if we have a address, we use it */ | |
342dfc30 | 216 | DECLARE_SOCKADDR(struct sockaddr_mISDN *, maddr, msg->msg_name); |
1b2b03f8 KK |
217 | mISDN_HEAD_ID(skb) = maddr->channel; |
218 | } else { /* use default for L2 messages */ | |
219 | if ((sk->sk_protocol == ISDN_P_LAPD_TE) || | |
220 | (sk->sk_protocol == ISDN_P_LAPD_NT)) | |
eac74af9 | 221 | mISDN_HEAD_ID(skb) = _pms(sk)->ch.nr; |
1b2b03f8 KK |
222 | } |
223 | ||
224 | if (*debug & DEBUG_SOCKET) | |
225 | printk(KERN_DEBUG "%s: ID:%x\n", | |
475be4d8 | 226 | __func__, mISDN_HEAD_ID(skb)); |
1b2b03f8 KK |
227 | |
228 | err = -ENODEV; | |
5df3b8bc KK |
229 | if (!_pms(sk)->ch.peer) |
230 | goto done; | |
231 | err = _pms(sk)->ch.recv(_pms(sk)->ch.peer, skb); | |
232 | if (err) | |
233 | goto done; | |
234 | else { | |
235 | skb = NULL; | |
236 | err = len; | |
237 | } | |
1b2b03f8 KK |
238 | |
239 | done: | |
5df3b8bc KK |
240 | if (skb) |
241 | kfree_skb(skb); | |
1b2b03f8 KK |
242 | release_sock(sk); |
243 | return err; | |
1b2b03f8 KK |
244 | } |
245 | ||
246 | static int | |
247 | data_sock_release(struct socket *sock) | |
248 | { | |
249 | struct sock *sk = sock->sk; | |
250 | ||
251 | if (*debug & DEBUG_SOCKET) | |
252 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
253 | if (!sk) | |
254 | return 0; | |
255 | switch (sk->sk_protocol) { | |
256 | case ISDN_P_TE_S0: | |
257 | case ISDN_P_NT_S0: | |
258 | case ISDN_P_TE_E1: | |
259 | case ISDN_P_NT_E1: | |
260 | if (sk->sk_state == MISDN_BOUND) | |
261 | delete_channel(&_pms(sk)->ch); | |
262 | else | |
263 | mISDN_sock_unlink(&data_sockets, sk); | |
264 | break; | |
265 | case ISDN_P_LAPD_TE: | |
266 | case ISDN_P_LAPD_NT: | |
267 | case ISDN_P_B_RAW: | |
268 | case ISDN_P_B_HDLC: | |
269 | case ISDN_P_B_X75SLP: | |
270 | case ISDN_P_B_L2DTMF: | |
271 | case ISDN_P_B_L2DSP: | |
272 | case ISDN_P_B_L2DSPHDLC: | |
273 | delete_channel(&_pms(sk)->ch); | |
274 | mISDN_sock_unlink(&data_sockets, sk); | |
275 | break; | |
276 | } | |
277 | ||
278 | lock_sock(sk); | |
279 | ||
280 | sock_orphan(sk); | |
281 | skb_queue_purge(&sk->sk_receive_queue); | |
282 | ||
283 | release_sock(sk); | |
284 | sock_put(sk); | |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
289 | static int | |
290 | data_sock_ioctl_bound(struct sock *sk, unsigned int cmd, void __user *p) | |
291 | { | |
292 | struct mISDN_ctrl_req cq; | |
e73f6b22 | 293 | int err = -EINVAL, val[2]; |
1b2b03f8 KK |
294 | struct mISDNchannel *bchan, *next; |
295 | ||
296 | lock_sock(sk); | |
297 | if (!_pms(sk)->dev) { | |
298 | err = -ENODEV; | |
299 | goto done; | |
300 | } | |
301 | switch (cmd) { | |
302 | case IMCTRLREQ: | |
303 | if (copy_from_user(&cq, p, sizeof(cq))) { | |
304 | err = -EFAULT; | |
305 | break; | |
306 | } | |
307 | if ((sk->sk_protocol & ~ISDN_P_B_MASK) == ISDN_P_B_START) { | |
308 | list_for_each_entry_safe(bchan, next, | |
475be4d8 | 309 | &_pms(sk)->dev->bchannels, list) { |
1b2b03f8 KK |
310 | if (bchan->nr == cq.channel) { |
311 | err = bchan->ctrl(bchan, | |
475be4d8 | 312 | CONTROL_CHANNEL, &cq); |
1b2b03f8 KK |
313 | break; |
314 | } | |
315 | } | |
316 | } else | |
317 | err = _pms(sk)->dev->D.ctrl(&_pms(sk)->dev->D, | |
475be4d8 | 318 | CONTROL_CHANNEL, &cq); |
1b2b03f8 KK |
319 | if (err) |
320 | break; | |
321 | if (copy_to_user(p, &cq, sizeof(cq))) | |
322 | err = -EFAULT; | |
323 | break; | |
324 | case IMCLEAR_L2: | |
325 | if (sk->sk_protocol != ISDN_P_LAPD_NT) { | |
326 | err = -EINVAL; | |
327 | break; | |
328 | } | |
e73f6b22 AE |
329 | val[0] = cmd; |
330 | if (get_user(val[1], (int __user *)p)) { | |
1b2b03f8 KK |
331 | err = -EFAULT; |
332 | break; | |
333 | } | |
334 | err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, | |
475be4d8 | 335 | CONTROL_CHANNEL, val); |
e73f6b22 AE |
336 | break; |
337 | case IMHOLD_L1: | |
338 | if (sk->sk_protocol != ISDN_P_LAPD_NT | |
475be4d8 | 339 | && sk->sk_protocol != ISDN_P_LAPD_TE) { |
e73f6b22 AE |
340 | err = -EINVAL; |
341 | break; | |
342 | } | |
343 | val[0] = cmd; | |
344 | if (get_user(val[1], (int __user *)p)) { | |
345 | err = -EFAULT; | |
346 | break; | |
347 | } | |
348 | err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, | |
475be4d8 | 349 | CONTROL_CHANNEL, val); |
1b2b03f8 KK |
350 | break; |
351 | default: | |
352 | err = -EINVAL; | |
353 | break; | |
354 | } | |
355 | done: | |
356 | release_sock(sk); | |
357 | return err; | |
358 | } | |
359 | ||
360 | static int | |
361 | data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
362 | { | |
475be4d8 | 363 | int err = 0, id; |
1b2b03f8 KK |
364 | struct sock *sk = sock->sk; |
365 | struct mISDNdevice *dev; | |
366 | struct mISDNversion ver; | |
367 | ||
368 | switch (cmd) { | |
369 | case IMGETVERSION: | |
370 | ver.major = MISDN_MAJOR_VERSION; | |
371 | ver.minor = MISDN_MINOR_VERSION; | |
372 | ver.release = MISDN_RELEASE; | |
373 | if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) | |
374 | err = -EFAULT; | |
375 | break; | |
376 | case IMGETCOUNT: | |
377 | id = get_mdevice_count(); | |
378 | if (put_user(id, (int __user *)arg)) | |
379 | err = -EFAULT; | |
380 | break; | |
381 | case IMGETDEVINFO: | |
382 | if (get_user(id, (int __user *)arg)) { | |
383 | err = -EFAULT; | |
384 | break; | |
385 | } | |
386 | dev = get_mdevice(id); | |
387 | if (dev) { | |
388 | struct mISDN_devinfo di; | |
389 | ||
ce384d91 | 390 | memset(&di, 0, sizeof(di)); |
1b2b03f8 KK |
391 | di.id = dev->id; |
392 | di.Dprotocols = dev->Dprotocols; | |
393 | di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); | |
394 | di.protocol = dev->D.protocol; | |
395 | memcpy(di.channelmap, dev->channelmap, | |
475be4d8 | 396 | sizeof(di.channelmap)); |
1b2b03f8 | 397 | di.nrbchan = dev->nrbchan; |
837468d1 | 398 | strcpy(di.name, dev_name(&dev->dev)); |
1b2b03f8 KK |
399 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
400 | err = -EFAULT; | |
401 | } else | |
402 | err = -ENODEV; | |
403 | break; | |
404 | default: | |
405 | if (sk->sk_state == MISDN_BOUND) | |
406 | err = data_sock_ioctl_bound(sk, cmd, | |
475be4d8 | 407 | (void __user *)arg); |
1b2b03f8 KK |
408 | else |
409 | err = -ENOTCONN; | |
410 | } | |
411 | return err; | |
412 | } | |
413 | ||
414 | static int data_sock_setsockopt(struct socket *sock, int level, int optname, | |
475be4d8 | 415 | char __user *optval, unsigned int len) |
1b2b03f8 KK |
416 | { |
417 | struct sock *sk = sock->sk; | |
418 | int err = 0, opt = 0; | |
419 | ||
420 | if (*debug & DEBUG_SOCKET) | |
421 | printk(KERN_DEBUG "%s(%p, %d, %x, %p, %d)\n", __func__, sock, | |
475be4d8 | 422 | level, optname, optval, len); |
1b2b03f8 KK |
423 | |
424 | lock_sock(sk); | |
425 | ||
426 | switch (optname) { | |
427 | case MISDN_TIME_STAMP: | |
428 | if (get_user(opt, (int __user *)optval)) { | |
429 | err = -EFAULT; | |
430 | break; | |
431 | } | |
432 | ||
433 | if (opt) | |
434 | _pms(sk)->cmask |= MISDN_TIME_STAMP; | |
435 | else | |
436 | _pms(sk)->cmask &= ~MISDN_TIME_STAMP; | |
437 | break; | |
438 | default: | |
439 | err = -ENOPROTOOPT; | |
440 | break; | |
441 | } | |
442 | release_sock(sk); | |
443 | return err; | |
444 | } | |
445 | ||
446 | static int data_sock_getsockopt(struct socket *sock, int level, int optname, | |
475be4d8 | 447 | char __user *optval, int __user *optlen) |
1b2b03f8 KK |
448 | { |
449 | struct sock *sk = sock->sk; | |
450 | int len, opt; | |
451 | ||
452 | if (get_user(len, optlen)) | |
453 | return -EFAULT; | |
454 | ||
81b424d9 DM |
455 | if (len != sizeof(char)) |
456 | return -EINVAL; | |
457 | ||
1b2b03f8 KK |
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 | 480 | struct sock *csk; |
1b2b03f8 KK |
481 | int err = 0; |
482 | ||
483 | if (*debug & DEBUG_SOCKET) | |
484 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
485 | if (addr_len != sizeof(struct sockaddr_mISDN)) | |
486 | return -EINVAL; | |
487 | if (!maddr || maddr->family != AF_ISDN) | |
488 | return -EINVAL; | |
489 | ||
490 | lock_sock(sk); | |
491 | ||
492 | if (_pms(sk)->dev) { | |
493 | err = -EALREADY; | |
494 | goto done; | |
495 | } | |
496 | _pms(sk)->dev = get_mdevice(maddr->dev); | |
497 | if (!_pms(sk)->dev) { | |
498 | err = -ENODEV; | |
499 | goto done; | |
500 | } | |
1b4d3312 | 501 | |
9a812553 AE |
502 | if (sk->sk_protocol < ISDN_P_B_START) { |
503 | read_lock_bh(&data_sockets.lock); | |
b67bfe0d | 504 | sk_for_each(csk, &data_sockets.head) { |
9a812553 AE |
505 | if (sk == csk) |
506 | continue; | |
507 | if (_pms(csk)->dev != _pms(sk)->dev) | |
508 | continue; | |
509 | if (csk->sk_protocol >= ISDN_P_B_START) | |
510 | continue; | |
511 | if (IS_ISDN_P_TE(csk->sk_protocol) | |
475be4d8 | 512 | == IS_ISDN_P_TE(sk->sk_protocol)) |
9a812553 AE |
513 | continue; |
514 | read_unlock_bh(&data_sockets.lock); | |
515 | err = -EBUSY; | |
516 | goto done; | |
517 | } | |
1b4d3312 | 518 | read_unlock_bh(&data_sockets.lock); |
1b4d3312 | 519 | } |
1b4d3312 | 520 | |
1b2b03f8 KK |
521 | _pms(sk)->ch.send = mISDN_send; |
522 | _pms(sk)->ch.ctrl = mISDN_ctrl; | |
523 | ||
524 | switch (sk->sk_protocol) { | |
525 | case ISDN_P_TE_S0: | |
526 | case ISDN_P_NT_S0: | |
527 | case ISDN_P_TE_E1: | |
528 | case ISDN_P_NT_E1: | |
529 | mISDN_sock_unlink(&data_sockets, sk); | |
530 | err = connect_layer1(_pms(sk)->dev, &_pms(sk)->ch, | |
475be4d8 | 531 | sk->sk_protocol, maddr); |
1b2b03f8 KK |
532 | if (err) |
533 | mISDN_sock_link(&data_sockets, sk); | |
534 | break; | |
535 | case ISDN_P_LAPD_TE: | |
536 | case ISDN_P_LAPD_NT: | |
537 | err = create_l2entity(_pms(sk)->dev, &_pms(sk)->ch, | |
475be4d8 | 538 | sk->sk_protocol, maddr); |
1b2b03f8 KK |
539 | break; |
540 | case ISDN_P_B_RAW: | |
541 | case ISDN_P_B_HDLC: | |
542 | case ISDN_P_B_X75SLP: | |
543 | case ISDN_P_B_L2DTMF: | |
544 | case ISDN_P_B_L2DSP: | |
545 | case ISDN_P_B_L2DSPHDLC: | |
546 | err = connect_Bstack(_pms(sk)->dev, &_pms(sk)->ch, | |
475be4d8 | 547 | sk->sk_protocol, maddr); |
1b2b03f8 KK |
548 | break; |
549 | default: | |
550 | err = -EPROTONOSUPPORT; | |
551 | } | |
552 | if (err) | |
553 | goto done; | |
554 | sk->sk_state = MISDN_BOUND; | |
555 | _pms(sk)->ch.protocol = sk->sk_protocol; | |
556 | ||
557 | done: | |
558 | release_sock(sk); | |
559 | return err; | |
560 | } | |
561 | ||
562 | static int | |
563 | data_sock_getname(struct socket *sock, struct sockaddr *addr, | |
475be4d8 | 564 | int *addr_len, int peer) |
1b2b03f8 | 565 | { |
475be4d8 | 566 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; |
1b2b03f8 KK |
567 | struct sock *sk = sock->sk; |
568 | ||
569 | if (!_pms(sk)->dev) | |
570 | return -EBADFD; | |
571 | ||
572 | lock_sock(sk); | |
573 | ||
574 | *addr_len = sizeof(*maddr); | |
d9152097 | 575 | maddr->family = AF_ISDN; |
1b2b03f8 KK |
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 | { | |
475be4d8 | 648 | int err = 0, id; |
1b2b03f8 KK |
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 | ||
ce384d91 | 674 | memset(&di, 0, sizeof(di)); |
1b2b03f8 KK |
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, | |
475be4d8 | 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 | 688 | case IMSETDEVNAME: |
475be4d8 JP |
689 | { |
690 | struct mISDN_devrename dn; | |
691 | if (copy_from_user(&dn, (void __user *)arg, | |
692 | sizeof(dn))) { | |
693 | err = -EFAULT; | |
694 | break; | |
8b6015f7 | 695 | } |
475be4d8 JP |
696 | dev = get_mdevice(dn.id); |
697 | if (dev) | |
698 | err = device_rename(&dev->dev, dn.name); | |
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 | ||
475be4d8 | 787 | switch (proto) { |
1b2b03f8 KK |
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 | } |