]>
Commit | Line | Data |
---|---|---|
8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
4 | ||
5 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.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 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
12 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
14 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
15 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
16 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
17 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
19 | ||
8e87d142 YH |
20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
22 | SOFTWARE IS DISCLAIMED. |
23 | */ | |
24 | ||
25 | /* Bluetooth HCI sockets. */ | |
26 | ||
8c520a59 | 27 | #include <linux/export.h> |
1da177e4 LT |
28 | #include <asm/unaligned.h> |
29 | ||
30 | #include <net/bluetooth/bluetooth.h> | |
31 | #include <net/bluetooth/hci_core.h> | |
cd82e61c | 32 | #include <net/bluetooth/hci_mon.h> |
1da177e4 | 33 | |
cd82e61c MH |
34 | static atomic_t monitor_promisc = ATOMIC_INIT(0); |
35 | ||
1da177e4 LT |
36 | /* ----- HCI socket interface ----- */ |
37 | ||
38 | static inline int hci_test_bit(int nr, void *addr) | |
39 | { | |
40 | return *((__u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31)); | |
41 | } | |
42 | ||
43 | /* Security filter */ | |
44 | static struct hci_sec_filter hci_sec_filter = { | |
45 | /* Packet types */ | |
46 | 0x10, | |
47 | /* Events */ | |
dd7f5527 | 48 | { 0x1000d9fe, 0x0000b00c }, |
1da177e4 LT |
49 | /* Commands */ |
50 | { | |
51 | { 0x0 }, | |
52 | /* OGF_LINK_CTL */ | |
7c631a67 | 53 | { 0xbe000006, 0x00000001, 0x00000000, 0x00 }, |
1da177e4 | 54 | /* OGF_LINK_POLICY */ |
7c631a67 | 55 | { 0x00005200, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 56 | /* OGF_HOST_CTL */ |
7c631a67 | 57 | { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 }, |
1da177e4 | 58 | /* OGF_INFO_PARAM */ |
7c631a67 | 59 | { 0x000002be, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 60 | /* OGF_STATUS_PARAM */ |
7c631a67 | 61 | { 0x000000ea, 0x00000000, 0x00000000, 0x00 } |
1da177e4 LT |
62 | } |
63 | }; | |
64 | ||
65 | static struct bt_sock_list hci_sk_list = { | |
d5fb2962 | 66 | .lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock) |
1da177e4 LT |
67 | }; |
68 | ||
69 | /* Send frame to RAW socket */ | |
470fe1b5 | 70 | void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
71 | { |
72 | struct sock *sk; | |
e0edf373 | 73 | struct sk_buff *skb_copy = NULL; |
1da177e4 LT |
74 | |
75 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
76 | ||
77 | read_lock(&hci_sk_list.lock); | |
470fe1b5 | 78 | |
b67bfe0d | 79 | sk_for_each(sk, &hci_sk_list.head) { |
1da177e4 LT |
80 | struct hci_filter *flt; |
81 | struct sk_buff *nskb; | |
82 | ||
83 | if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev) | |
84 | continue; | |
85 | ||
86 | /* Don't send frame to the socket it came from */ | |
87 | if (skb->sk == sk) | |
88 | continue; | |
89 | ||
470fe1b5 | 90 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) |
a40c406c JH |
91 | continue; |
92 | ||
1da177e4 LT |
93 | /* Apply filter */ |
94 | flt = &hci_pi(sk)->filter; | |
95 | ||
0d48d939 | 96 | if (!test_bit((bt_cb(skb)->pkt_type == HCI_VENDOR_PKT) ? |
3bb3c755 GP |
97 | 0 : (bt_cb(skb)->pkt_type & HCI_FLT_TYPE_BITS), |
98 | &flt->type_mask)) | |
1da177e4 LT |
99 | continue; |
100 | ||
0d48d939 | 101 | if (bt_cb(skb)->pkt_type == HCI_EVENT_PKT) { |
fc5fef61 | 102 | int evt = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); |
1da177e4 LT |
103 | |
104 | if (!hci_test_bit(evt, &flt->event_mask)) | |
105 | continue; | |
106 | ||
4498c80d DM |
107 | if (flt->opcode && |
108 | ((evt == HCI_EV_CMD_COMPLETE && | |
109 | flt->opcode != | |
905f3ed6 | 110 | get_unaligned((__le16 *)(skb->data + 3))) || |
4498c80d DM |
111 | (evt == HCI_EV_CMD_STATUS && |
112 | flt->opcode != | |
905f3ed6 | 113 | get_unaligned((__le16 *)(skb->data + 4))))) |
1da177e4 LT |
114 | continue; |
115 | } | |
116 | ||
e0edf373 MH |
117 | if (!skb_copy) { |
118 | /* Create a private copy with headroom */ | |
119 | skb_copy = __pskb_copy(skb, 1, GFP_ATOMIC); | |
120 | if (!skb_copy) | |
121 | continue; | |
122 | ||
123 | /* Put type byte before the data */ | |
124 | memcpy(skb_push(skb_copy, 1), &bt_cb(skb)->pkt_type, 1); | |
125 | } | |
126 | ||
127 | nskb = skb_clone(skb_copy, GFP_ATOMIC); | |
70f23020 | 128 | if (!nskb) |
1da177e4 LT |
129 | continue; |
130 | ||
470fe1b5 MH |
131 | if (sock_queue_rcv_skb(sk, nskb)) |
132 | kfree_skb(nskb); | |
133 | } | |
134 | ||
135 | read_unlock(&hci_sk_list.lock); | |
e0edf373 MH |
136 | |
137 | kfree_skb(skb_copy); | |
470fe1b5 MH |
138 | } |
139 | ||
140 | /* Send frame to control socket */ | |
141 | void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk) | |
142 | { | |
143 | struct sock *sk; | |
470fe1b5 MH |
144 | |
145 | BT_DBG("len %d", skb->len); | |
146 | ||
147 | read_lock(&hci_sk_list.lock); | |
148 | ||
b67bfe0d | 149 | sk_for_each(sk, &hci_sk_list.head) { |
470fe1b5 MH |
150 | struct sk_buff *nskb; |
151 | ||
152 | /* Skip the original socket */ | |
153 | if (sk == skip_sk) | |
154 | continue; | |
155 | ||
156 | if (sk->sk_state != BT_BOUND) | |
157 | continue; | |
158 | ||
159 | if (hci_pi(sk)->channel != HCI_CHANNEL_CONTROL) | |
160 | continue; | |
161 | ||
162 | nskb = skb_clone(skb, GFP_ATOMIC); | |
163 | if (!nskb) | |
164 | continue; | |
1da177e4 LT |
165 | |
166 | if (sock_queue_rcv_skb(sk, nskb)) | |
167 | kfree_skb(nskb); | |
168 | } | |
470fe1b5 | 169 | |
1da177e4 LT |
170 | read_unlock(&hci_sk_list.lock); |
171 | } | |
172 | ||
cd82e61c MH |
173 | /* Send frame to monitor socket */ |
174 | void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb) | |
175 | { | |
176 | struct sock *sk; | |
cd82e61c MH |
177 | struct sk_buff *skb_copy = NULL; |
178 | __le16 opcode; | |
179 | ||
180 | if (!atomic_read(&monitor_promisc)) | |
181 | return; | |
182 | ||
183 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
184 | ||
185 | switch (bt_cb(skb)->pkt_type) { | |
186 | case HCI_COMMAND_PKT: | |
187 | opcode = __constant_cpu_to_le16(HCI_MON_COMMAND_PKT); | |
188 | break; | |
189 | case HCI_EVENT_PKT: | |
190 | opcode = __constant_cpu_to_le16(HCI_MON_EVENT_PKT); | |
191 | break; | |
192 | case HCI_ACLDATA_PKT: | |
193 | if (bt_cb(skb)->incoming) | |
194 | opcode = __constant_cpu_to_le16(HCI_MON_ACL_RX_PKT); | |
195 | else | |
196 | opcode = __constant_cpu_to_le16(HCI_MON_ACL_TX_PKT); | |
197 | break; | |
198 | case HCI_SCODATA_PKT: | |
199 | if (bt_cb(skb)->incoming) | |
200 | opcode = __constant_cpu_to_le16(HCI_MON_SCO_RX_PKT); | |
201 | else | |
202 | opcode = __constant_cpu_to_le16(HCI_MON_SCO_TX_PKT); | |
203 | break; | |
204 | default: | |
205 | return; | |
206 | } | |
207 | ||
208 | read_lock(&hci_sk_list.lock); | |
209 | ||
b67bfe0d | 210 | sk_for_each(sk, &hci_sk_list.head) { |
cd82e61c MH |
211 | struct sk_buff *nskb; |
212 | ||
213 | if (sk->sk_state != BT_BOUND) | |
214 | continue; | |
215 | ||
216 | if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR) | |
217 | continue; | |
218 | ||
219 | if (!skb_copy) { | |
220 | struct hci_mon_hdr *hdr; | |
221 | ||
222 | /* Create a private copy with headroom */ | |
8fc9ced3 GP |
223 | skb_copy = __pskb_copy(skb, HCI_MON_HDR_SIZE, |
224 | GFP_ATOMIC); | |
cd82e61c MH |
225 | if (!skb_copy) |
226 | continue; | |
227 | ||
228 | /* Put header before the data */ | |
229 | hdr = (void *) skb_push(skb_copy, HCI_MON_HDR_SIZE); | |
230 | hdr->opcode = opcode; | |
231 | hdr->index = cpu_to_le16(hdev->id); | |
232 | hdr->len = cpu_to_le16(skb->len); | |
233 | } | |
234 | ||
235 | nskb = skb_clone(skb_copy, GFP_ATOMIC); | |
236 | if (!nskb) | |
237 | continue; | |
238 | ||
239 | if (sock_queue_rcv_skb(sk, nskb)) | |
240 | kfree_skb(nskb); | |
241 | } | |
242 | ||
243 | read_unlock(&hci_sk_list.lock); | |
244 | ||
245 | kfree_skb(skb_copy); | |
246 | } | |
247 | ||
248 | static void send_monitor_event(struct sk_buff *skb) | |
249 | { | |
250 | struct sock *sk; | |
cd82e61c MH |
251 | |
252 | BT_DBG("len %d", skb->len); | |
253 | ||
254 | read_lock(&hci_sk_list.lock); | |
255 | ||
b67bfe0d | 256 | sk_for_each(sk, &hci_sk_list.head) { |
cd82e61c MH |
257 | struct sk_buff *nskb; |
258 | ||
259 | if (sk->sk_state != BT_BOUND) | |
260 | continue; | |
261 | ||
262 | if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR) | |
263 | continue; | |
264 | ||
265 | nskb = skb_clone(skb, GFP_ATOMIC); | |
266 | if (!nskb) | |
267 | continue; | |
268 | ||
269 | if (sock_queue_rcv_skb(sk, nskb)) | |
270 | kfree_skb(nskb); | |
271 | } | |
272 | ||
273 | read_unlock(&hci_sk_list.lock); | |
274 | } | |
275 | ||
276 | static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event) | |
277 | { | |
278 | struct hci_mon_hdr *hdr; | |
279 | struct hci_mon_new_index *ni; | |
280 | struct sk_buff *skb; | |
281 | __le16 opcode; | |
282 | ||
283 | switch (event) { | |
284 | case HCI_DEV_REG: | |
285 | skb = bt_skb_alloc(HCI_MON_NEW_INDEX_SIZE, GFP_ATOMIC); | |
286 | if (!skb) | |
287 | return NULL; | |
288 | ||
289 | ni = (void *) skb_put(skb, HCI_MON_NEW_INDEX_SIZE); | |
290 | ni->type = hdev->dev_type; | |
291 | ni->bus = hdev->bus; | |
292 | bacpy(&ni->bdaddr, &hdev->bdaddr); | |
293 | memcpy(ni->name, hdev->name, 8); | |
294 | ||
295 | opcode = __constant_cpu_to_le16(HCI_MON_NEW_INDEX); | |
296 | break; | |
297 | ||
298 | case HCI_DEV_UNREG: | |
299 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
300 | if (!skb) | |
301 | return NULL; | |
302 | ||
303 | opcode = __constant_cpu_to_le16(HCI_MON_DEL_INDEX); | |
304 | break; | |
305 | ||
306 | default: | |
307 | return NULL; | |
308 | } | |
309 | ||
310 | __net_timestamp(skb); | |
311 | ||
312 | hdr = (void *) skb_push(skb, HCI_MON_HDR_SIZE); | |
313 | hdr->opcode = opcode; | |
314 | hdr->index = cpu_to_le16(hdev->id); | |
315 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
316 | ||
317 | return skb; | |
318 | } | |
319 | ||
320 | static void send_monitor_replay(struct sock *sk) | |
321 | { | |
322 | struct hci_dev *hdev; | |
323 | ||
324 | read_lock(&hci_dev_list_lock); | |
325 | ||
326 | list_for_each_entry(hdev, &hci_dev_list, list) { | |
327 | struct sk_buff *skb; | |
328 | ||
329 | skb = create_monitor_event(hdev, HCI_DEV_REG); | |
330 | if (!skb) | |
331 | continue; | |
332 | ||
333 | if (sock_queue_rcv_skb(sk, skb)) | |
334 | kfree_skb(skb); | |
335 | } | |
336 | ||
337 | read_unlock(&hci_dev_list_lock); | |
338 | } | |
339 | ||
040030ef MH |
340 | /* Generate internal stack event */ |
341 | static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data) | |
342 | { | |
343 | struct hci_event_hdr *hdr; | |
344 | struct hci_ev_stack_internal *ev; | |
345 | struct sk_buff *skb; | |
346 | ||
347 | skb = bt_skb_alloc(HCI_EVENT_HDR_SIZE + sizeof(*ev) + dlen, GFP_ATOMIC); | |
348 | if (!skb) | |
349 | return; | |
350 | ||
351 | hdr = (void *) skb_put(skb, HCI_EVENT_HDR_SIZE); | |
352 | hdr->evt = HCI_EV_STACK_INTERNAL; | |
353 | hdr->plen = sizeof(*ev) + dlen; | |
354 | ||
355 | ev = (void *) skb_put(skb, sizeof(*ev) + dlen); | |
356 | ev->type = type; | |
357 | memcpy(ev->data, data, dlen); | |
358 | ||
359 | bt_cb(skb)->incoming = 1; | |
360 | __net_timestamp(skb); | |
361 | ||
362 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; | |
363 | skb->dev = (void *) hdev; | |
364 | hci_send_to_sock(hdev, skb); | |
365 | kfree_skb(skb); | |
366 | } | |
367 | ||
368 | void hci_sock_dev_event(struct hci_dev *hdev, int event) | |
369 | { | |
370 | struct hci_ev_si_device ev; | |
371 | ||
372 | BT_DBG("hdev %s event %d", hdev->name, event); | |
373 | ||
cd82e61c MH |
374 | /* Send event to monitor */ |
375 | if (atomic_read(&monitor_promisc)) { | |
376 | struct sk_buff *skb; | |
377 | ||
378 | skb = create_monitor_event(hdev, event); | |
379 | if (skb) { | |
380 | send_monitor_event(skb); | |
381 | kfree_skb(skb); | |
382 | } | |
383 | } | |
384 | ||
040030ef MH |
385 | /* Send event to sockets */ |
386 | ev.event = event; | |
387 | ev.dev_id = hdev->id; | |
388 | hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev); | |
389 | ||
390 | if (event == HCI_DEV_UNREG) { | |
391 | struct sock *sk; | |
040030ef MH |
392 | |
393 | /* Detach sockets from device */ | |
394 | read_lock(&hci_sk_list.lock); | |
b67bfe0d | 395 | sk_for_each(sk, &hci_sk_list.head) { |
040030ef MH |
396 | bh_lock_sock_nested(sk); |
397 | if (hci_pi(sk)->hdev == hdev) { | |
398 | hci_pi(sk)->hdev = NULL; | |
399 | sk->sk_err = EPIPE; | |
400 | sk->sk_state = BT_OPEN; | |
401 | sk->sk_state_change(sk); | |
402 | ||
403 | hci_dev_put(hdev); | |
404 | } | |
405 | bh_unlock_sock(sk); | |
406 | } | |
407 | read_unlock(&hci_sk_list.lock); | |
408 | } | |
409 | } | |
410 | ||
1da177e4 LT |
411 | static int hci_sock_release(struct socket *sock) |
412 | { | |
413 | struct sock *sk = sock->sk; | |
7b005bd3 | 414 | struct hci_dev *hdev; |
1da177e4 LT |
415 | |
416 | BT_DBG("sock %p sk %p", sock, sk); | |
417 | ||
418 | if (!sk) | |
419 | return 0; | |
420 | ||
7b005bd3 MH |
421 | hdev = hci_pi(sk)->hdev; |
422 | ||
cd82e61c MH |
423 | if (hci_pi(sk)->channel == HCI_CHANNEL_MONITOR) |
424 | atomic_dec(&monitor_promisc); | |
425 | ||
1da177e4 LT |
426 | bt_sock_unlink(&hci_sk_list, sk); |
427 | ||
428 | if (hdev) { | |
429 | atomic_dec(&hdev->promisc); | |
430 | hci_dev_put(hdev); | |
431 | } | |
432 | ||
433 | sock_orphan(sk); | |
434 | ||
435 | skb_queue_purge(&sk->sk_receive_queue); | |
436 | skb_queue_purge(&sk->sk_write_queue); | |
437 | ||
438 | sock_put(sk); | |
439 | return 0; | |
440 | } | |
441 | ||
b2a66aad | 442 | static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
443 | { |
444 | bdaddr_t bdaddr; | |
5e762444 | 445 | int err; |
f0358568 JH |
446 | |
447 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
448 | return -EFAULT; | |
449 | ||
09fd0de5 | 450 | hci_dev_lock(hdev); |
5e762444 | 451 | |
88c1fe4b | 452 | err = hci_blacklist_add(hdev, &bdaddr, 0); |
5e762444 | 453 | |
09fd0de5 | 454 | hci_dev_unlock(hdev); |
5e762444 AJ |
455 | |
456 | return err; | |
f0358568 JH |
457 | } |
458 | ||
b2a66aad | 459 | static int hci_sock_blacklist_del(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
460 | { |
461 | bdaddr_t bdaddr; | |
5e762444 | 462 | int err; |
f0358568 JH |
463 | |
464 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
465 | return -EFAULT; | |
466 | ||
09fd0de5 | 467 | hci_dev_lock(hdev); |
5e762444 | 468 | |
88c1fe4b | 469 | err = hci_blacklist_del(hdev, &bdaddr, 0); |
5e762444 | 470 | |
09fd0de5 | 471 | hci_dev_unlock(hdev); |
5e762444 AJ |
472 | |
473 | return err; | |
f0358568 JH |
474 | } |
475 | ||
8e87d142 | 476 | /* Ioctls that require bound socket */ |
6039aa73 GP |
477 | static int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, |
478 | unsigned long arg) | |
1da177e4 LT |
479 | { |
480 | struct hci_dev *hdev = hci_pi(sk)->hdev; | |
481 | ||
482 | if (!hdev) | |
483 | return -EBADFD; | |
484 | ||
485 | switch (cmd) { | |
486 | case HCISETRAW: | |
487 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 488 | return -EPERM; |
1da177e4 LT |
489 | |
490 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
491 | return -EPERM; | |
492 | ||
493 | if (arg) | |
494 | set_bit(HCI_RAW, &hdev->flags); | |
495 | else | |
496 | clear_bit(HCI_RAW, &hdev->flags); | |
497 | ||
498 | return 0; | |
499 | ||
1da177e4 | 500 | case HCIGETCONNINFO: |
40be492f MH |
501 | return hci_get_conn_info(hdev, (void __user *) arg); |
502 | ||
503 | case HCIGETAUTHINFO: | |
504 | return hci_get_auth_info(hdev, (void __user *) arg); | |
1da177e4 | 505 | |
f0358568 JH |
506 | case HCIBLOCKADDR: |
507 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 508 | return -EPERM; |
b2a66aad | 509 | return hci_sock_blacklist_add(hdev, (void __user *) arg); |
f0358568 JH |
510 | |
511 | case HCIUNBLOCKADDR: | |
512 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 513 | return -EPERM; |
b2a66aad | 514 | return hci_sock_blacklist_del(hdev, (void __user *) arg); |
f0358568 | 515 | |
1da177e4 LT |
516 | default: |
517 | if (hdev->ioctl) | |
518 | return hdev->ioctl(hdev, cmd, arg); | |
519 | return -EINVAL; | |
520 | } | |
521 | } | |
522 | ||
8fc9ced3 GP |
523 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, |
524 | unsigned long arg) | |
1da177e4 LT |
525 | { |
526 | struct sock *sk = sock->sk; | |
40be492f | 527 | void __user *argp = (void __user *) arg; |
1da177e4 LT |
528 | int err; |
529 | ||
530 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
531 | ||
532 | switch (cmd) { | |
533 | case HCIGETDEVLIST: | |
534 | return hci_get_dev_list(argp); | |
535 | ||
536 | case HCIGETDEVINFO: | |
537 | return hci_get_dev_info(argp); | |
538 | ||
539 | case HCIGETCONNLIST: | |
540 | return hci_get_conn_list(argp); | |
541 | ||
542 | case HCIDEVUP: | |
543 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 544 | return -EPERM; |
1da177e4 LT |
545 | return hci_dev_open(arg); |
546 | ||
547 | case HCIDEVDOWN: | |
548 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 549 | return -EPERM; |
1da177e4 LT |
550 | return hci_dev_close(arg); |
551 | ||
552 | case HCIDEVRESET: | |
553 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 554 | return -EPERM; |
1da177e4 LT |
555 | return hci_dev_reset(arg); |
556 | ||
557 | case HCIDEVRESTAT: | |
558 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 559 | return -EPERM; |
1da177e4 LT |
560 | return hci_dev_reset_stat(arg); |
561 | ||
562 | case HCISETSCAN: | |
563 | case HCISETAUTH: | |
564 | case HCISETENCRYPT: | |
565 | case HCISETPTYPE: | |
566 | case HCISETLINKPOL: | |
567 | case HCISETLINKMODE: | |
568 | case HCISETACLMTU: | |
569 | case HCISETSCOMTU: | |
570 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 571 | return -EPERM; |
1da177e4 LT |
572 | return hci_dev_cmd(cmd, argp); |
573 | ||
574 | case HCIINQUIRY: | |
575 | return hci_inquiry(argp); | |
576 | ||
577 | default: | |
578 | lock_sock(sk); | |
579 | err = hci_sock_bound_ioctl(sk, cmd, arg); | |
580 | release_sock(sk); | |
581 | return err; | |
582 | } | |
583 | } | |
584 | ||
8fc9ced3 GP |
585 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, |
586 | int addr_len) | |
1da177e4 | 587 | { |
0381101f | 588 | struct sockaddr_hci haddr; |
1da177e4 LT |
589 | struct sock *sk = sock->sk; |
590 | struct hci_dev *hdev = NULL; | |
0381101f | 591 | int len, err = 0; |
1da177e4 LT |
592 | |
593 | BT_DBG("sock %p sk %p", sock, sk); | |
594 | ||
0381101f JH |
595 | if (!addr) |
596 | return -EINVAL; | |
597 | ||
598 | memset(&haddr, 0, sizeof(haddr)); | |
599 | len = min_t(unsigned int, sizeof(haddr), addr_len); | |
600 | memcpy(&haddr, addr, len); | |
601 | ||
602 | if (haddr.hci_family != AF_BLUETOOTH) | |
603 | return -EINVAL; | |
604 | ||
1da177e4 LT |
605 | lock_sock(sk); |
606 | ||
7cc2ade2 | 607 | if (sk->sk_state == BT_BOUND) { |
1da177e4 LT |
608 | err = -EALREADY; |
609 | goto done; | |
610 | } | |
611 | ||
7cc2ade2 MH |
612 | switch (haddr.hci_channel) { |
613 | case HCI_CHANNEL_RAW: | |
614 | if (hci_pi(sk)->hdev) { | |
615 | err = -EALREADY; | |
1da177e4 LT |
616 | goto done; |
617 | } | |
618 | ||
7cc2ade2 MH |
619 | if (haddr.hci_dev != HCI_DEV_NONE) { |
620 | hdev = hci_dev_get(haddr.hci_dev); | |
621 | if (!hdev) { | |
622 | err = -ENODEV; | |
623 | goto done; | |
624 | } | |
625 | ||
626 | atomic_inc(&hdev->promisc); | |
627 | } | |
628 | ||
629 | hci_pi(sk)->hdev = hdev; | |
630 | break; | |
631 | ||
632 | case HCI_CHANNEL_CONTROL: | |
4b95a24c | 633 | if (haddr.hci_dev != HCI_DEV_NONE) { |
7cc2ade2 MH |
634 | err = -EINVAL; |
635 | goto done; | |
636 | } | |
637 | ||
801f13bd MH |
638 | if (!capable(CAP_NET_ADMIN)) { |
639 | err = -EPERM; | |
640 | goto done; | |
641 | } | |
642 | ||
7cc2ade2 MH |
643 | break; |
644 | ||
cd82e61c MH |
645 | case HCI_CHANNEL_MONITOR: |
646 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
647 | err = -EINVAL; | |
648 | goto done; | |
649 | } | |
650 | ||
651 | if (!capable(CAP_NET_RAW)) { | |
652 | err = -EPERM; | |
653 | goto done; | |
654 | } | |
655 | ||
656 | send_monitor_replay(sk); | |
657 | ||
658 | atomic_inc(&monitor_promisc); | |
659 | break; | |
660 | ||
7cc2ade2 MH |
661 | default: |
662 | err = -EINVAL; | |
663 | goto done; | |
1da177e4 LT |
664 | } |
665 | ||
7cc2ade2 | 666 | |
0381101f | 667 | hci_pi(sk)->channel = haddr.hci_channel; |
1da177e4 LT |
668 | sk->sk_state = BT_BOUND; |
669 | ||
670 | done: | |
671 | release_sock(sk); | |
672 | return err; | |
673 | } | |
674 | ||
8fc9ced3 GP |
675 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, |
676 | int *addr_len, int peer) | |
1da177e4 LT |
677 | { |
678 | struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr; | |
679 | struct sock *sk = sock->sk; | |
7b005bd3 | 680 | struct hci_dev *hdev = hci_pi(sk)->hdev; |
1da177e4 LT |
681 | |
682 | BT_DBG("sock %p sk %p", sock, sk); | |
683 | ||
7b005bd3 MH |
684 | if (!hdev) |
685 | return -EBADFD; | |
686 | ||
1da177e4 LT |
687 | lock_sock(sk); |
688 | ||
689 | *addr_len = sizeof(*haddr); | |
690 | haddr->hci_family = AF_BLUETOOTH; | |
7b005bd3 | 691 | haddr->hci_dev = hdev->id; |
3f68ba07 | 692 | haddr->hci_channel= 0; |
1da177e4 LT |
693 | |
694 | release_sock(sk); | |
695 | return 0; | |
696 | } | |
697 | ||
6039aa73 GP |
698 | static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, |
699 | struct sk_buff *skb) | |
1da177e4 LT |
700 | { |
701 | __u32 mask = hci_pi(sk)->cmsg_mask; | |
702 | ||
0d48d939 MH |
703 | if (mask & HCI_CMSG_DIR) { |
704 | int incoming = bt_cb(skb)->incoming; | |
8fc9ced3 GP |
705 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), |
706 | &incoming); | |
0d48d939 | 707 | } |
1da177e4 | 708 | |
a61bbcf2 | 709 | if (mask & HCI_CMSG_TSTAMP) { |
f6e623a6 JFS |
710 | #ifdef CONFIG_COMPAT |
711 | struct compat_timeval ctv; | |
712 | #endif | |
a61bbcf2 | 713 | struct timeval tv; |
767c5eb5 MH |
714 | void *data; |
715 | int len; | |
a61bbcf2 PM |
716 | |
717 | skb_get_timestamp(skb, &tv); | |
767c5eb5 | 718 | |
1da97f83 DM |
719 | data = &tv; |
720 | len = sizeof(tv); | |
721 | #ifdef CONFIG_COMPAT | |
da88cea1 L |
722 | if (!COMPAT_USE_64BIT_TIME && |
723 | (msg->msg_flags & MSG_CMSG_COMPAT)) { | |
767c5eb5 MH |
724 | ctv.tv_sec = tv.tv_sec; |
725 | ctv.tv_usec = tv.tv_usec; | |
726 | data = &ctv; | |
727 | len = sizeof(ctv); | |
767c5eb5 | 728 | } |
1da97f83 | 729 | #endif |
767c5eb5 MH |
730 | |
731 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data); | |
a61bbcf2 | 732 | } |
1da177e4 | 733 | } |
8e87d142 YH |
734 | |
735 | static int hci_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
3bb3c755 | 736 | struct msghdr *msg, size_t len, int flags) |
1da177e4 LT |
737 | { |
738 | int noblock = flags & MSG_DONTWAIT; | |
739 | struct sock *sk = sock->sk; | |
740 | struct sk_buff *skb; | |
741 | int copied, err; | |
742 | ||
743 | BT_DBG("sock %p, sk %p", sock, sk); | |
744 | ||
745 | if (flags & (MSG_OOB)) | |
746 | return -EOPNOTSUPP; | |
747 | ||
748 | if (sk->sk_state == BT_CLOSED) | |
749 | return 0; | |
750 | ||
70f23020 AE |
751 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
752 | if (!skb) | |
1da177e4 LT |
753 | return err; |
754 | ||
755 | msg->msg_namelen = 0; | |
756 | ||
757 | copied = skb->len; | |
758 | if (len < copied) { | |
759 | msg->msg_flags |= MSG_TRUNC; | |
760 | copied = len; | |
761 | } | |
762 | ||
badff6d0 | 763 | skb_reset_transport_header(skb); |
1da177e4 LT |
764 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); |
765 | ||
3a208627 MH |
766 | switch (hci_pi(sk)->channel) { |
767 | case HCI_CHANNEL_RAW: | |
768 | hci_sock_cmsg(sk, msg, skb); | |
769 | break; | |
97e0bdeb | 770 | case HCI_CHANNEL_CONTROL: |
cd82e61c MH |
771 | case HCI_CHANNEL_MONITOR: |
772 | sock_recv_timestamp(msg, sk, skb); | |
773 | break; | |
3a208627 | 774 | } |
1da177e4 LT |
775 | |
776 | skb_free_datagram(sk, skb); | |
777 | ||
778 | return err ? : copied; | |
779 | } | |
780 | ||
8e87d142 | 781 | static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
1da177e4 LT |
782 | struct msghdr *msg, size_t len) |
783 | { | |
784 | struct sock *sk = sock->sk; | |
785 | struct hci_dev *hdev; | |
786 | struct sk_buff *skb; | |
787 | int err; | |
788 | ||
789 | BT_DBG("sock %p sk %p", sock, sk); | |
790 | ||
791 | if (msg->msg_flags & MSG_OOB) | |
792 | return -EOPNOTSUPP; | |
793 | ||
794 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) | |
795 | return -EINVAL; | |
796 | ||
797 | if (len < 4 || len > HCI_MAX_FRAME_SIZE) | |
798 | return -EINVAL; | |
799 | ||
800 | lock_sock(sk); | |
801 | ||
0381101f JH |
802 | switch (hci_pi(sk)->channel) { |
803 | case HCI_CHANNEL_RAW: | |
804 | break; | |
805 | case HCI_CHANNEL_CONTROL: | |
806 | err = mgmt_control(sk, msg, len); | |
807 | goto done; | |
cd82e61c MH |
808 | case HCI_CHANNEL_MONITOR: |
809 | err = -EOPNOTSUPP; | |
810 | goto done; | |
0381101f JH |
811 | default: |
812 | err = -EINVAL; | |
813 | goto done; | |
814 | } | |
815 | ||
70f23020 AE |
816 | hdev = hci_pi(sk)->hdev; |
817 | if (!hdev) { | |
1da177e4 LT |
818 | err = -EBADFD; |
819 | goto done; | |
820 | } | |
821 | ||
7e21addc MH |
822 | if (!test_bit(HCI_UP, &hdev->flags)) { |
823 | err = -ENETDOWN; | |
824 | goto done; | |
825 | } | |
826 | ||
70f23020 AE |
827 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
828 | if (!skb) | |
1da177e4 LT |
829 | goto done; |
830 | ||
831 | if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { | |
832 | err = -EFAULT; | |
833 | goto drop; | |
834 | } | |
835 | ||
0d48d939 | 836 | bt_cb(skb)->pkt_type = *((unsigned char *) skb->data); |
1da177e4 LT |
837 | skb_pull(skb, 1); |
838 | skb->dev = (void *) hdev; | |
839 | ||
0d48d939 | 840 | if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT) { |
83985319 | 841 | u16 opcode = get_unaligned_le16(skb->data); |
1da177e4 LT |
842 | u16 ogf = hci_opcode_ogf(opcode); |
843 | u16 ocf = hci_opcode_ocf(opcode); | |
844 | ||
845 | if (((ogf > HCI_SFLT_MAX_OGF) || | |
3bb3c755 GP |
846 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, |
847 | &hci_sec_filter.ocf_mask[ogf])) && | |
848 | !capable(CAP_NET_RAW)) { | |
1da177e4 LT |
849 | err = -EPERM; |
850 | goto drop; | |
851 | } | |
852 | ||
a9de9248 | 853 | if (test_bit(HCI_RAW, &hdev->flags) || (ogf == 0x3f)) { |
1da177e4 | 854 | skb_queue_tail(&hdev->raw_q, skb); |
3eff45ea | 855 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
856 | } else { |
857 | skb_queue_tail(&hdev->cmd_q, skb); | |
c347b765 | 858 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
859 | } |
860 | } else { | |
861 | if (!capable(CAP_NET_RAW)) { | |
862 | err = -EPERM; | |
863 | goto drop; | |
864 | } | |
865 | ||
866 | skb_queue_tail(&hdev->raw_q, skb); | |
3eff45ea | 867 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
868 | } |
869 | ||
870 | err = len; | |
871 | ||
872 | done: | |
873 | release_sock(sk); | |
874 | return err; | |
875 | ||
876 | drop: | |
877 | kfree_skb(skb); | |
878 | goto done; | |
879 | } | |
880 | ||
8fc9ced3 GP |
881 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, |
882 | char __user *optval, unsigned int len) | |
1da177e4 LT |
883 | { |
884 | struct hci_ufilter uf = { .opcode = 0 }; | |
885 | struct sock *sk = sock->sk; | |
886 | int err = 0, opt = 0; | |
887 | ||
888 | BT_DBG("sk %p, opt %d", sk, optname); | |
889 | ||
890 | lock_sock(sk); | |
891 | ||
2f39cdb7 MH |
892 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
893 | err = -EINVAL; | |
894 | goto done; | |
895 | } | |
896 | ||
1da177e4 LT |
897 | switch (optname) { |
898 | case HCI_DATA_DIR: | |
899 | if (get_user(opt, (int __user *)optval)) { | |
900 | err = -EFAULT; | |
901 | break; | |
902 | } | |
903 | ||
904 | if (opt) | |
905 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; | |
906 | else | |
907 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; | |
908 | break; | |
909 | ||
910 | case HCI_TIME_STAMP: | |
911 | if (get_user(opt, (int __user *)optval)) { | |
912 | err = -EFAULT; | |
913 | break; | |
914 | } | |
915 | ||
916 | if (opt) | |
917 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; | |
918 | else | |
919 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; | |
920 | break; | |
921 | ||
922 | case HCI_FILTER: | |
0878b666 MH |
923 | { |
924 | struct hci_filter *f = &hci_pi(sk)->filter; | |
925 | ||
926 | uf.type_mask = f->type_mask; | |
927 | uf.opcode = f->opcode; | |
928 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
929 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
930 | } | |
931 | ||
1da177e4 LT |
932 | len = min_t(unsigned int, len, sizeof(uf)); |
933 | if (copy_from_user(&uf, optval, len)) { | |
934 | err = -EFAULT; | |
935 | break; | |
936 | } | |
937 | ||
938 | if (!capable(CAP_NET_RAW)) { | |
939 | uf.type_mask &= hci_sec_filter.type_mask; | |
940 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); | |
941 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); | |
942 | } | |
943 | ||
944 | { | |
945 | struct hci_filter *f = &hci_pi(sk)->filter; | |
946 | ||
947 | f->type_mask = uf.type_mask; | |
948 | f->opcode = uf.opcode; | |
949 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; | |
950 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; | |
951 | } | |
8e87d142 | 952 | break; |
1da177e4 LT |
953 | |
954 | default: | |
955 | err = -ENOPROTOOPT; | |
956 | break; | |
957 | } | |
958 | ||
2f39cdb7 | 959 | done: |
1da177e4 LT |
960 | release_sock(sk); |
961 | return err; | |
962 | } | |
963 | ||
8fc9ced3 GP |
964 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, |
965 | char __user *optval, int __user *optlen) | |
1da177e4 LT |
966 | { |
967 | struct hci_ufilter uf; | |
968 | struct sock *sk = sock->sk; | |
cedc5469 MH |
969 | int len, opt, err = 0; |
970 | ||
971 | BT_DBG("sk %p, opt %d", sk, optname); | |
1da177e4 LT |
972 | |
973 | if (get_user(len, optlen)) | |
974 | return -EFAULT; | |
975 | ||
cedc5469 MH |
976 | lock_sock(sk); |
977 | ||
978 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
979 | err = -EINVAL; | |
980 | goto done; | |
981 | } | |
982 | ||
1da177e4 LT |
983 | switch (optname) { |
984 | case HCI_DATA_DIR: | |
985 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) | |
986 | opt = 1; | |
8e87d142 | 987 | else |
1da177e4 LT |
988 | opt = 0; |
989 | ||
990 | if (put_user(opt, optval)) | |
cedc5469 | 991 | err = -EFAULT; |
1da177e4 LT |
992 | break; |
993 | ||
994 | case HCI_TIME_STAMP: | |
995 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) | |
996 | opt = 1; | |
8e87d142 | 997 | else |
1da177e4 LT |
998 | opt = 0; |
999 | ||
1000 | if (put_user(opt, optval)) | |
cedc5469 | 1001 | err = -EFAULT; |
1da177e4 LT |
1002 | break; |
1003 | ||
1004 | case HCI_FILTER: | |
1005 | { | |
1006 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1007 | ||
e15ca9a0 | 1008 | memset(&uf, 0, sizeof(uf)); |
1da177e4 LT |
1009 | uf.type_mask = f->type_mask; |
1010 | uf.opcode = f->opcode; | |
1011 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1012 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1013 | } | |
1014 | ||
1015 | len = min_t(unsigned int, len, sizeof(uf)); | |
1016 | if (copy_to_user(optval, &uf, len)) | |
cedc5469 | 1017 | err = -EFAULT; |
1da177e4 LT |
1018 | break; |
1019 | ||
1020 | default: | |
cedc5469 | 1021 | err = -ENOPROTOOPT; |
1da177e4 LT |
1022 | break; |
1023 | } | |
1024 | ||
cedc5469 MH |
1025 | done: |
1026 | release_sock(sk); | |
1027 | return err; | |
1da177e4 LT |
1028 | } |
1029 | ||
90ddc4f0 | 1030 | static const struct proto_ops hci_sock_ops = { |
1da177e4 LT |
1031 | .family = PF_BLUETOOTH, |
1032 | .owner = THIS_MODULE, | |
1033 | .release = hci_sock_release, | |
1034 | .bind = hci_sock_bind, | |
1035 | .getname = hci_sock_getname, | |
1036 | .sendmsg = hci_sock_sendmsg, | |
1037 | .recvmsg = hci_sock_recvmsg, | |
1038 | .ioctl = hci_sock_ioctl, | |
1039 | .poll = datagram_poll, | |
1040 | .listen = sock_no_listen, | |
1041 | .shutdown = sock_no_shutdown, | |
1042 | .setsockopt = hci_sock_setsockopt, | |
1043 | .getsockopt = hci_sock_getsockopt, | |
1044 | .connect = sock_no_connect, | |
1045 | .socketpair = sock_no_socketpair, | |
1046 | .accept = sock_no_accept, | |
1047 | .mmap = sock_no_mmap | |
1048 | }; | |
1049 | ||
1050 | static struct proto hci_sk_proto = { | |
1051 | .name = "HCI", | |
1052 | .owner = THIS_MODULE, | |
1053 | .obj_size = sizeof(struct hci_pinfo) | |
1054 | }; | |
1055 | ||
3f378b68 EP |
1056 | static int hci_sock_create(struct net *net, struct socket *sock, int protocol, |
1057 | int kern) | |
1da177e4 LT |
1058 | { |
1059 | struct sock *sk; | |
1060 | ||
1061 | BT_DBG("sock %p", sock); | |
1062 | ||
1063 | if (sock->type != SOCK_RAW) | |
1064 | return -ESOCKTNOSUPPORT; | |
1065 | ||
1066 | sock->ops = &hci_sock_ops; | |
1067 | ||
6257ff21 | 1068 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto); |
1da177e4 LT |
1069 | if (!sk) |
1070 | return -ENOMEM; | |
1071 | ||
1072 | sock_init_data(sock, sk); | |
1073 | ||
1074 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1075 | ||
1076 | sk->sk_protocol = protocol; | |
1077 | ||
1078 | sock->state = SS_UNCONNECTED; | |
1079 | sk->sk_state = BT_OPEN; | |
1080 | ||
1081 | bt_sock_link(&hci_sk_list, sk); | |
1082 | return 0; | |
1083 | } | |
1084 | ||
ec1b4cf7 | 1085 | static const struct net_proto_family hci_sock_family_ops = { |
1da177e4 LT |
1086 | .family = PF_BLUETOOTH, |
1087 | .owner = THIS_MODULE, | |
1088 | .create = hci_sock_create, | |
1089 | }; | |
1090 | ||
1da177e4 LT |
1091 | int __init hci_sock_init(void) |
1092 | { | |
1093 | int err; | |
1094 | ||
1095 | err = proto_register(&hci_sk_proto, 0); | |
1096 | if (err < 0) | |
1097 | return err; | |
1098 | ||
1099 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); | |
f7c86637 MY |
1100 | if (err < 0) { |
1101 | BT_ERR("HCI socket registration failed"); | |
1da177e4 | 1102 | goto error; |
f7c86637 MY |
1103 | } |
1104 | ||
1105 | err = bt_procfs_init(THIS_MODULE, &init_net, "hci", &hci_sk_list, NULL); | |
1106 | if (err < 0) { | |
1107 | BT_ERR("Failed to create HCI proc file"); | |
1108 | bt_sock_unregister(BTPROTO_HCI); | |
1109 | goto error; | |
1110 | } | |
1da177e4 | 1111 | |
1da177e4 LT |
1112 | BT_INFO("HCI socket layer initialized"); |
1113 | ||
1114 | return 0; | |
1115 | ||
1116 | error: | |
1da177e4 LT |
1117 | proto_unregister(&hci_sk_proto); |
1118 | return err; | |
1119 | } | |
1120 | ||
b7440a14 | 1121 | void hci_sock_cleanup(void) |
1da177e4 | 1122 | { |
f7c86637 | 1123 | bt_procfs_cleanup(&init_net, "hci"); |
1da177e4 LT |
1124 | if (bt_sock_unregister(BTPROTO_HCI) < 0) |
1125 | BT_ERR("HCI socket unregistration failed"); | |
1126 | ||
1da177e4 | 1127 | proto_unregister(&hci_sk_proto); |
1da177e4 | 1128 | } |