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Commit | Line | Data |
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1b2b03f8 KK |
1 | /* |
2 | * | |
3 | * Author Karsten Keil <kkeil@novell.com> | |
4 | * | |
5 | * Copyright 2008 by Karsten Keil <kkeil@novell.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | */ | |
17 | ||
18 | #include <linux/mISDNif.h> | |
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 | |
1b784140 YX |
115 | mISDN_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, |
116 | 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) | |
63354797 | 158 | refcount_dec(&skb->users); |
1b2b03f8 KK |
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 | |
1b784140 | 176 | mISDN_sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) |
1b2b03f8 KK |
177 | { |
178 | struct sock *sk = sock->sk; | |
179 | struct sk_buff *skb; | |
180 | int err = -ENOMEM; | |
1b2b03f8 KK |
181 | |
182 | if (*debug & DEBUG_SOCKET) | |
183 | printk(KERN_DEBUG "%s: len %d flags %x ch %d proto %x\n", | |
475be4d8 JP |
184 | __func__, (int)len, msg->msg_flags, _pms(sk)->ch.nr, |
185 | sk->sk_protocol); | |
1b2b03f8 KK |
186 | |
187 | if (msg->msg_flags & MSG_OOB) | |
188 | return -EOPNOTSUPP; | |
189 | ||
475be4d8 | 190 | if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_NOSIGNAL | MSG_ERRQUEUE)) |
1b2b03f8 KK |
191 | return -EINVAL; |
192 | ||
193 | if (len < MISDN_HEADER_LEN) | |
194 | return -EINVAL; | |
195 | ||
196 | if (sk->sk_state != MISDN_BOUND) | |
197 | return -EBADFD; | |
198 | ||
199 | lock_sock(sk); | |
200 | ||
201 | skb = _l2_alloc_skb(len, GFP_KERNEL); | |
202 | if (!skb) | |
203 | goto done; | |
204 | ||
6ce8e9ce | 205 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
1b2b03f8 | 206 | err = -EFAULT; |
5df3b8bc | 207 | goto done; |
1b2b03f8 KK |
208 | } |
209 | ||
210 | memcpy(mISDN_HEAD_P(skb), skb->data, MISDN_HEADER_LEN); | |
211 | skb_pull(skb, MISDN_HEADER_LEN); | |
212 | ||
213 | if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) { | |
214 | /* if we have a address, we use it */ | |
342dfc30 | 215 | DECLARE_SOCKADDR(struct sockaddr_mISDN *, maddr, msg->msg_name); |
1b2b03f8 KK |
216 | mISDN_HEAD_ID(skb) = maddr->channel; |
217 | } else { /* use default for L2 messages */ | |
218 | if ((sk->sk_protocol == ISDN_P_LAPD_TE) || | |
219 | (sk->sk_protocol == ISDN_P_LAPD_NT)) | |
eac74af9 | 220 | mISDN_HEAD_ID(skb) = _pms(sk)->ch.nr; |
1b2b03f8 KK |
221 | } |
222 | ||
223 | if (*debug & DEBUG_SOCKET) | |
224 | printk(KERN_DEBUG "%s: ID:%x\n", | |
475be4d8 | 225 | __func__, mISDN_HEAD_ID(skb)); |
1b2b03f8 KK |
226 | |
227 | err = -ENODEV; | |
5df3b8bc KK |
228 | if (!_pms(sk)->ch.peer) |
229 | goto done; | |
230 | err = _pms(sk)->ch.recv(_pms(sk)->ch.peer, skb); | |
231 | if (err) | |
232 | goto done; | |
233 | else { | |
234 | skb = NULL; | |
235 | err = len; | |
236 | } | |
1b2b03f8 KK |
237 | |
238 | done: | |
5df3b8bc KK |
239 | if (skb) |
240 | kfree_skb(skb); | |
1b2b03f8 KK |
241 | release_sock(sk); |
242 | return err; | |
1b2b03f8 KK |
243 | } |
244 | ||
245 | static int | |
246 | data_sock_release(struct socket *sock) | |
247 | { | |
248 | struct sock *sk = sock->sk; | |
249 | ||
250 | if (*debug & DEBUG_SOCKET) | |
251 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
252 | if (!sk) | |
253 | return 0; | |
254 | switch (sk->sk_protocol) { | |
255 | case ISDN_P_TE_S0: | |
256 | case ISDN_P_NT_S0: | |
257 | case ISDN_P_TE_E1: | |
258 | case ISDN_P_NT_E1: | |
259 | if (sk->sk_state == MISDN_BOUND) | |
260 | delete_channel(&_pms(sk)->ch); | |
261 | else | |
262 | mISDN_sock_unlink(&data_sockets, sk); | |
263 | break; | |
264 | case ISDN_P_LAPD_TE: | |
265 | case ISDN_P_LAPD_NT: | |
266 | case ISDN_P_B_RAW: | |
267 | case ISDN_P_B_HDLC: | |
268 | case ISDN_P_B_X75SLP: | |
269 | case ISDN_P_B_L2DTMF: | |
270 | case ISDN_P_B_L2DSP: | |
271 | case ISDN_P_B_L2DSPHDLC: | |
272 | delete_channel(&_pms(sk)->ch); | |
273 | mISDN_sock_unlink(&data_sockets, sk); | |
274 | break; | |
275 | } | |
276 | ||
277 | lock_sock(sk); | |
278 | ||
279 | sock_orphan(sk); | |
280 | skb_queue_purge(&sk->sk_receive_queue); | |
281 | ||
282 | release_sock(sk); | |
283 | sock_put(sk); | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
288 | static int | |
289 | data_sock_ioctl_bound(struct sock *sk, unsigned int cmd, void __user *p) | |
290 | { | |
291 | struct mISDN_ctrl_req cq; | |
e73f6b22 | 292 | int err = -EINVAL, val[2]; |
1b2b03f8 KK |
293 | struct mISDNchannel *bchan, *next; |
294 | ||
295 | lock_sock(sk); | |
296 | if (!_pms(sk)->dev) { | |
297 | err = -ENODEV; | |
298 | goto done; | |
299 | } | |
300 | switch (cmd) { | |
301 | case IMCTRLREQ: | |
302 | if (copy_from_user(&cq, p, sizeof(cq))) { | |
303 | err = -EFAULT; | |
304 | break; | |
305 | } | |
306 | if ((sk->sk_protocol & ~ISDN_P_B_MASK) == ISDN_P_B_START) { | |
307 | list_for_each_entry_safe(bchan, next, | |
475be4d8 | 308 | &_pms(sk)->dev->bchannels, list) { |
1b2b03f8 KK |
309 | if (bchan->nr == cq.channel) { |
310 | err = bchan->ctrl(bchan, | |
475be4d8 | 311 | CONTROL_CHANNEL, &cq); |
1b2b03f8 KK |
312 | break; |
313 | } | |
314 | } | |
315 | } else | |
316 | err = _pms(sk)->dev->D.ctrl(&_pms(sk)->dev->D, | |
475be4d8 | 317 | CONTROL_CHANNEL, &cq); |
1b2b03f8 KK |
318 | if (err) |
319 | break; | |
320 | if (copy_to_user(p, &cq, sizeof(cq))) | |
321 | err = -EFAULT; | |
322 | break; | |
323 | case IMCLEAR_L2: | |
324 | if (sk->sk_protocol != ISDN_P_LAPD_NT) { | |
325 | err = -EINVAL; | |
326 | break; | |
327 | } | |
e73f6b22 AE |
328 | val[0] = cmd; |
329 | if (get_user(val[1], (int __user *)p)) { | |
1b2b03f8 KK |
330 | err = -EFAULT; |
331 | break; | |
332 | } | |
333 | err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, | |
475be4d8 | 334 | CONTROL_CHANNEL, val); |
e73f6b22 AE |
335 | break; |
336 | case IMHOLD_L1: | |
337 | if (sk->sk_protocol != ISDN_P_LAPD_NT | |
475be4d8 | 338 | && sk->sk_protocol != ISDN_P_LAPD_TE) { |
e73f6b22 AE |
339 | err = -EINVAL; |
340 | break; | |
341 | } | |
342 | val[0] = cmd; | |
343 | if (get_user(val[1], (int __user *)p)) { | |
344 | err = -EFAULT; | |
345 | break; | |
346 | } | |
347 | err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, | |
475be4d8 | 348 | CONTROL_CHANNEL, val); |
1b2b03f8 KK |
349 | break; |
350 | default: | |
351 | err = -EINVAL; | |
352 | break; | |
353 | } | |
354 | done: | |
355 | release_sock(sk); | |
356 | return err; | |
357 | } | |
358 | ||
359 | static int | |
360 | data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
361 | { | |
475be4d8 | 362 | int err = 0, id; |
1b2b03f8 KK |
363 | struct sock *sk = sock->sk; |
364 | struct mISDNdevice *dev; | |
365 | struct mISDNversion ver; | |
366 | ||
367 | switch (cmd) { | |
368 | case IMGETVERSION: | |
369 | ver.major = MISDN_MAJOR_VERSION; | |
370 | ver.minor = MISDN_MINOR_VERSION; | |
371 | ver.release = MISDN_RELEASE; | |
372 | if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) | |
373 | err = -EFAULT; | |
374 | break; | |
375 | case IMGETCOUNT: | |
376 | id = get_mdevice_count(); | |
377 | if (put_user(id, (int __user *)arg)) | |
378 | err = -EFAULT; | |
379 | break; | |
380 | case IMGETDEVINFO: | |
381 | if (get_user(id, (int __user *)arg)) { | |
382 | err = -EFAULT; | |
383 | break; | |
384 | } | |
385 | dev = get_mdevice(id); | |
386 | if (dev) { | |
387 | struct mISDN_devinfo di; | |
388 | ||
ce384d91 | 389 | memset(&di, 0, sizeof(di)); |
1b2b03f8 KK |
390 | di.id = dev->id; |
391 | di.Dprotocols = dev->Dprotocols; | |
392 | di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); | |
393 | di.protocol = dev->D.protocol; | |
394 | memcpy(di.channelmap, dev->channelmap, | |
475be4d8 | 395 | sizeof(di.channelmap)); |
1b2b03f8 | 396 | di.nrbchan = dev->nrbchan; |
837468d1 | 397 | strcpy(di.name, dev_name(&dev->dev)); |
1b2b03f8 KK |
398 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
399 | err = -EFAULT; | |
400 | } else | |
401 | err = -ENODEV; | |
402 | break; | |
403 | default: | |
404 | if (sk->sk_state == MISDN_BOUND) | |
405 | err = data_sock_ioctl_bound(sk, cmd, | |
475be4d8 | 406 | (void __user *)arg); |
1b2b03f8 KK |
407 | else |
408 | err = -ENOTCONN; | |
409 | } | |
410 | return err; | |
411 | } | |
412 | ||
413 | static int data_sock_setsockopt(struct socket *sock, int level, int optname, | |
475be4d8 | 414 | char __user *optval, unsigned int len) |
1b2b03f8 KK |
415 | { |
416 | struct sock *sk = sock->sk; | |
417 | int err = 0, opt = 0; | |
418 | ||
419 | if (*debug & DEBUG_SOCKET) | |
420 | printk(KERN_DEBUG "%s(%p, %d, %x, %p, %d)\n", __func__, sock, | |
475be4d8 | 421 | level, optname, optval, len); |
1b2b03f8 KK |
422 | |
423 | lock_sock(sk); | |
424 | ||
425 | switch (optname) { | |
426 | case MISDN_TIME_STAMP: | |
427 | if (get_user(opt, (int __user *)optval)) { | |
428 | err = -EFAULT; | |
429 | break; | |
430 | } | |
431 | ||
432 | if (opt) | |
433 | _pms(sk)->cmask |= MISDN_TIME_STAMP; | |
434 | else | |
435 | _pms(sk)->cmask &= ~MISDN_TIME_STAMP; | |
436 | break; | |
437 | default: | |
438 | err = -ENOPROTOOPT; | |
439 | break; | |
440 | } | |
441 | release_sock(sk); | |
442 | return err; | |
443 | } | |
444 | ||
445 | static int data_sock_getsockopt(struct socket *sock, int level, int optname, | |
475be4d8 | 446 | char __user *optval, int __user *optlen) |
1b2b03f8 KK |
447 | { |
448 | struct sock *sk = sock->sk; | |
449 | int len, opt; | |
450 | ||
451 | if (get_user(len, optlen)) | |
452 | return -EFAULT; | |
453 | ||
81b424d9 DM |
454 | if (len != sizeof(char)) |
455 | return -EINVAL; | |
456 | ||
1b2b03f8 KK |
457 | switch (optname) { |
458 | case MISDN_TIME_STAMP: | |
459 | if (_pms(sk)->cmask & MISDN_TIME_STAMP) | |
460 | opt = 1; | |
461 | else | |
462 | opt = 0; | |
463 | ||
464 | if (put_user(opt, optval)) | |
465 | return -EFAULT; | |
466 | break; | |
467 | default: | |
468 | return -ENOPROTOOPT; | |
469 | } | |
470 | ||
471 | return 0; | |
472 | } | |
473 | ||
474 | static int | |
475 | data_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
476 | { | |
477 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; | |
478 | struct sock *sk = sock->sk; | |
1b4d3312 | 479 | struct sock *csk; |
1b2b03f8 KK |
480 | int err = 0; |
481 | ||
482 | if (*debug & DEBUG_SOCKET) | |
483 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
484 | if (addr_len != sizeof(struct sockaddr_mISDN)) | |
485 | return -EINVAL; | |
486 | if (!maddr || maddr->family != AF_ISDN) | |
487 | return -EINVAL; | |
488 | ||
489 | lock_sock(sk); | |
490 | ||
491 | if (_pms(sk)->dev) { | |
492 | err = -EALREADY; | |
493 | goto done; | |
494 | } | |
495 | _pms(sk)->dev = get_mdevice(maddr->dev); | |
496 | if (!_pms(sk)->dev) { | |
497 | err = -ENODEV; | |
498 | goto done; | |
499 | } | |
1b4d3312 | 500 | |
9a812553 AE |
501 | if (sk->sk_protocol < ISDN_P_B_START) { |
502 | read_lock_bh(&data_sockets.lock); | |
b67bfe0d | 503 | sk_for_each(csk, &data_sockets.head) { |
9a812553 AE |
504 | if (sk == csk) |
505 | continue; | |
506 | if (_pms(csk)->dev != _pms(sk)->dev) | |
507 | continue; | |
508 | if (csk->sk_protocol >= ISDN_P_B_START) | |
509 | continue; | |
510 | if (IS_ISDN_P_TE(csk->sk_protocol) | |
475be4d8 | 511 | == IS_ISDN_P_TE(sk->sk_protocol)) |
9a812553 AE |
512 | continue; |
513 | read_unlock_bh(&data_sockets.lock); | |
514 | err = -EBUSY; | |
515 | goto done; | |
516 | } | |
1b4d3312 | 517 | read_unlock_bh(&data_sockets.lock); |
1b4d3312 | 518 | } |
1b4d3312 | 519 | |
1b2b03f8 KK |
520 | _pms(sk)->ch.send = mISDN_send; |
521 | _pms(sk)->ch.ctrl = mISDN_ctrl; | |
522 | ||
523 | switch (sk->sk_protocol) { | |
524 | case ISDN_P_TE_S0: | |
525 | case ISDN_P_NT_S0: | |
526 | case ISDN_P_TE_E1: | |
527 | case ISDN_P_NT_E1: | |
528 | mISDN_sock_unlink(&data_sockets, sk); | |
529 | err = connect_layer1(_pms(sk)->dev, &_pms(sk)->ch, | |
475be4d8 | 530 | sk->sk_protocol, maddr); |
1b2b03f8 KK |
531 | if (err) |
532 | mISDN_sock_link(&data_sockets, sk); | |
533 | break; | |
534 | case ISDN_P_LAPD_TE: | |
535 | case ISDN_P_LAPD_NT: | |
536 | err = create_l2entity(_pms(sk)->dev, &_pms(sk)->ch, | |
475be4d8 | 537 | sk->sk_protocol, maddr); |
1b2b03f8 KK |
538 | break; |
539 | case ISDN_P_B_RAW: | |
540 | case ISDN_P_B_HDLC: | |
541 | case ISDN_P_B_X75SLP: | |
542 | case ISDN_P_B_L2DTMF: | |
543 | case ISDN_P_B_L2DSP: | |
544 | case ISDN_P_B_L2DSPHDLC: | |
545 | err = connect_Bstack(_pms(sk)->dev, &_pms(sk)->ch, | |
475be4d8 | 546 | sk->sk_protocol, maddr); |
1b2b03f8 KK |
547 | break; |
548 | default: | |
549 | err = -EPROTONOSUPPORT; | |
550 | } | |
551 | if (err) | |
552 | goto done; | |
553 | sk->sk_state = MISDN_BOUND; | |
554 | _pms(sk)->ch.protocol = sk->sk_protocol; | |
555 | ||
556 | done: | |
557 | release_sock(sk); | |
558 | return err; | |
559 | } | |
560 | ||
561 | static int | |
562 | data_sock_getname(struct socket *sock, struct sockaddr *addr, | |
475be4d8 | 563 | int *addr_len, int peer) |
1b2b03f8 | 564 | { |
475be4d8 | 565 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; |
1b2b03f8 KK |
566 | struct sock *sk = sock->sk; |
567 | ||
568 | if (!_pms(sk)->dev) | |
569 | return -EBADFD; | |
570 | ||
571 | lock_sock(sk); | |
572 | ||
573 | *addr_len = sizeof(*maddr); | |
d9152097 | 574 | maddr->family = AF_ISDN; |
1b2b03f8 KK |
575 | maddr->dev = _pms(sk)->dev->id; |
576 | maddr->channel = _pms(sk)->ch.nr; | |
577 | maddr->sapi = _pms(sk)->ch.addr & 0xff; | |
578 | maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xff; | |
579 | release_sock(sk); | |
580 | return 0; | |
581 | } | |
582 | ||
583 | static const struct proto_ops data_sock_ops = { | |
584 | .family = PF_ISDN, | |
585 | .owner = THIS_MODULE, | |
586 | .release = data_sock_release, | |
587 | .ioctl = data_sock_ioctl, | |
588 | .bind = data_sock_bind, | |
589 | .getname = data_sock_getname, | |
590 | .sendmsg = mISDN_sock_sendmsg, | |
591 | .recvmsg = mISDN_sock_recvmsg, | |
592 | .poll = datagram_poll, | |
593 | .listen = sock_no_listen, | |
594 | .shutdown = sock_no_shutdown, | |
595 | .setsockopt = data_sock_setsockopt, | |
596 | .getsockopt = data_sock_getsockopt, | |
597 | .connect = sock_no_connect, | |
598 | .socketpair = sock_no_socketpair, | |
599 | .accept = sock_no_accept, | |
600 | .mmap = sock_no_mmap | |
601 | }; | |
602 | ||
603 | static int | |
11aa9c28 | 604 | data_sock_create(struct net *net, struct socket *sock, int protocol, int kern) |
1b2b03f8 KK |
605 | { |
606 | struct sock *sk; | |
607 | ||
608 | if (sock->type != SOCK_DGRAM) | |
609 | return -ESOCKTNOSUPPORT; | |
610 | ||
11aa9c28 | 611 | sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto, kern); |
1b2b03f8 KK |
612 | if (!sk) |
613 | return -ENOMEM; | |
614 | ||
615 | sock_init_data(sock, sk); | |
616 | ||
617 | sock->ops = &data_sock_ops; | |
618 | sock->state = SS_UNCONNECTED; | |
619 | sock_reset_flag(sk, SOCK_ZAPPED); | |
620 | ||
621 | sk->sk_protocol = protocol; | |
622 | sk->sk_state = MISDN_OPEN; | |
623 | mISDN_sock_link(&data_sockets, sk); | |
624 | ||
625 | return 0; | |
626 | } | |
627 | ||
628 | static int | |
629 | base_sock_release(struct socket *sock) | |
630 | { | |
631 | struct sock *sk = sock->sk; | |
632 | ||
633 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); | |
634 | if (!sk) | |
635 | return 0; | |
636 | ||
637 | mISDN_sock_unlink(&base_sockets, sk); | |
638 | sock_orphan(sk); | |
639 | sock_put(sk); | |
640 | ||
641 | return 0; | |
642 | } | |
643 | ||
644 | static int | |
645 | base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
646 | { | |
475be4d8 | 647 | int err = 0, id; |
1b2b03f8 KK |
648 | struct mISDNdevice *dev; |
649 | struct mISDNversion ver; | |
650 | ||
651 | switch (cmd) { | |
652 | case IMGETVERSION: | |
653 | ver.major = MISDN_MAJOR_VERSION; | |
654 | ver.minor = MISDN_MINOR_VERSION; | |
655 | ver.release = MISDN_RELEASE; | |
656 | if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) | |
657 | err = -EFAULT; | |
658 | break; | |
659 | case IMGETCOUNT: | |
660 | id = get_mdevice_count(); | |
661 | if (put_user(id, (int __user *)arg)) | |
662 | err = -EFAULT; | |
663 | break; | |
664 | case IMGETDEVINFO: | |
665 | if (get_user(id, (int __user *)arg)) { | |
666 | err = -EFAULT; | |
667 | break; | |
668 | } | |
669 | dev = get_mdevice(id); | |
670 | if (dev) { | |
671 | struct mISDN_devinfo di; | |
672 | ||
ce384d91 | 673 | memset(&di, 0, sizeof(di)); |
1b2b03f8 KK |
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, | |
475be4d8 | 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 | 687 | case IMSETDEVNAME: |
475be4d8 JP |
688 | { |
689 | struct mISDN_devrename dn; | |
690 | if (copy_from_user(&dn, (void __user *)arg, | |
691 | sizeof(dn))) { | |
692 | err = -EFAULT; | |
693 | break; | |
8b6015f7 | 694 | } |
475be4d8 JP |
695 | dev = get_mdevice(dn.id); |
696 | if (dev) | |
697 | err = device_rename(&dev->dev, dn.name); | |
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 | ||
b8216468 ED |
718 | if (addr_len < sizeof(struct sockaddr_mISDN)) |
719 | return -EINVAL; | |
720 | ||
1b2b03f8 KK |
721 | lock_sock(sk); |
722 | ||
723 | if (_pms(sk)->dev) { | |
724 | err = -EALREADY; | |
725 | goto done; | |
726 | } | |
727 | ||
728 | _pms(sk)->dev = get_mdevice(maddr->dev); | |
729 | if (!_pms(sk)->dev) { | |
730 | err = -ENODEV; | |
731 | goto done; | |
732 | } | |
733 | sk->sk_state = MISDN_BOUND; | |
734 | ||
735 | done: | |
736 | release_sock(sk); | |
737 | return err; | |
738 | } | |
739 | ||
740 | static const struct proto_ops base_sock_ops = { | |
741 | .family = PF_ISDN, | |
742 | .owner = THIS_MODULE, | |
743 | .release = base_sock_release, | |
744 | .ioctl = base_sock_ioctl, | |
745 | .bind = base_sock_bind, | |
746 | .getname = sock_no_getname, | |
747 | .sendmsg = sock_no_sendmsg, | |
748 | .recvmsg = sock_no_recvmsg, | |
749 | .poll = sock_no_poll, | |
750 | .listen = sock_no_listen, | |
751 | .shutdown = sock_no_shutdown, | |
752 | .setsockopt = sock_no_setsockopt, | |
753 | .getsockopt = sock_no_getsockopt, | |
754 | .connect = sock_no_connect, | |
755 | .socketpair = sock_no_socketpair, | |
756 | .accept = sock_no_accept, | |
757 | .mmap = sock_no_mmap | |
758 | }; | |
759 | ||
760 | ||
761 | static int | |
11aa9c28 | 762 | base_sock_create(struct net *net, struct socket *sock, int protocol, int kern) |
1b2b03f8 KK |
763 | { |
764 | struct sock *sk; | |
765 | ||
766 | if (sock->type != SOCK_RAW) | |
767 | return -ESOCKTNOSUPPORT; | |
768 | ||
11aa9c28 | 769 | sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto, kern); |
1b2b03f8 KK |
770 | if (!sk) |
771 | return -ENOMEM; | |
772 | ||
773 | sock_init_data(sock, sk); | |
774 | sock->ops = &base_sock_ops; | |
775 | sock->state = SS_UNCONNECTED; | |
776 | sock_reset_flag(sk, SOCK_ZAPPED); | |
777 | sk->sk_protocol = protocol; | |
778 | sk->sk_state = MISDN_OPEN; | |
779 | mISDN_sock_link(&base_sockets, sk); | |
780 | ||
781 | return 0; | |
782 | } | |
783 | ||
784 | static int | |
3f378b68 | 785 | mISDN_sock_create(struct net *net, struct socket *sock, int proto, int kern) |
1b2b03f8 KK |
786 | { |
787 | int err = -EPROTONOSUPPORT; | |
788 | ||
475be4d8 | 789 | switch (proto) { |
1b2b03f8 | 790 | case ISDN_P_BASE: |
11aa9c28 | 791 | err = base_sock_create(net, sock, proto, kern); |
1b2b03f8 KK |
792 | break; |
793 | case ISDN_P_TE_S0: | |
794 | case ISDN_P_NT_S0: | |
795 | case ISDN_P_TE_E1: | |
796 | case ISDN_P_NT_E1: | |
797 | case ISDN_P_LAPD_TE: | |
798 | case ISDN_P_LAPD_NT: | |
799 | case ISDN_P_B_RAW: | |
800 | case ISDN_P_B_HDLC: | |
801 | case ISDN_P_B_X75SLP: | |
802 | case ISDN_P_B_L2DTMF: | |
803 | case ISDN_P_B_L2DSP: | |
804 | case ISDN_P_B_L2DSPHDLC: | |
11aa9c28 | 805 | err = data_sock_create(net, sock, proto, kern); |
1b2b03f8 KK |
806 | break; |
807 | default: | |
808 | return err; | |
809 | } | |
810 | ||
811 | return err; | |
812 | } | |
813 | ||
ec1b4cf7 | 814 | static const struct net_proto_family mISDN_sock_family_ops = { |
1b2b03f8 KK |
815 | .owner = THIS_MODULE, |
816 | .family = PF_ISDN, | |
817 | .create = mISDN_sock_create, | |
818 | }; | |
819 | ||
820 | int | |
821 | misdn_sock_init(u_int *deb) | |
822 | { | |
823 | int err; | |
824 | ||
825 | debug = deb; | |
826 | err = sock_register(&mISDN_sock_family_ops); | |
827 | if (err) | |
828 | printk(KERN_ERR "%s: error(%d)\n", __func__, err); | |
829 | return err; | |
830 | } | |
831 | ||
832 | void | |
833 | misdn_sock_cleanup(void) | |
834 | { | |
835 | sock_unregister(PF_ISDN); | |
836 | } |