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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
3df92b31 | 29 | #include <linux/idr.h> |
8c520a59 | 30 | #include <linux/rfkill.h> |
baf27f6e | 31 | #include <linux/debugfs.h> |
47219839 | 32 | #include <asm/unaligned.h> |
1da177e4 LT |
33 | |
34 | #include <net/bluetooth/bluetooth.h> | |
35 | #include <net/bluetooth/hci_core.h> | |
36 | ||
b78752cc | 37 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 38 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 39 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 40 | |
1da177e4 LT |
41 | /* HCI device list */ |
42 | LIST_HEAD(hci_dev_list); | |
43 | DEFINE_RWLOCK(hci_dev_list_lock); | |
44 | ||
45 | /* HCI callback list */ | |
46 | LIST_HEAD(hci_cb_list); | |
47 | DEFINE_RWLOCK(hci_cb_list_lock); | |
48 | ||
3df92b31 SL |
49 | /* HCI ID Numbering */ |
50 | static DEFINE_IDA(hci_index_ida); | |
51 | ||
1da177e4 LT |
52 | /* ---- HCI notifications ---- */ |
53 | ||
6516455d | 54 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 55 | { |
040030ef | 56 | hci_sock_dev_event(hdev, event); |
1da177e4 LT |
57 | } |
58 | ||
baf27f6e MH |
59 | /* ---- HCI debugfs entries ---- */ |
60 | ||
70afe0b8 MH |
61 | static int blacklist_show(struct seq_file *f, void *p) |
62 | { | |
63 | struct hci_dev *hdev = f->private; | |
64 | struct bdaddr_list *b; | |
65 | ||
66 | hci_dev_lock(hdev); | |
67 | list_for_each_entry(b, &hdev->blacklist, list) | |
68 | seq_printf(f, "%pMR\n", &b->bdaddr); | |
69 | hci_dev_unlock(hdev); | |
70 | ||
71 | return 0; | |
72 | } | |
73 | ||
74 | static int blacklist_open(struct inode *inode, struct file *file) | |
75 | { | |
76 | return single_open(file, blacklist_show, inode->i_private); | |
77 | } | |
78 | ||
79 | static const struct file_operations blacklist_fops = { | |
80 | .open = blacklist_open, | |
81 | .read = seq_read, | |
82 | .llseek = seq_lseek, | |
83 | .release = single_release, | |
84 | }; | |
85 | ||
47219839 MH |
86 | static int uuids_show(struct seq_file *f, void *p) |
87 | { | |
88 | struct hci_dev *hdev = f->private; | |
89 | struct bt_uuid *uuid; | |
90 | ||
91 | hci_dev_lock(hdev); | |
92 | list_for_each_entry(uuid, &hdev->uuids, list) { | |
93 | u32 data0, data5; | |
94 | u16 data1, data2, data3, data4; | |
95 | ||
96 | data5 = get_unaligned_le32(uuid); | |
97 | data4 = get_unaligned_le16(uuid + 4); | |
98 | data3 = get_unaligned_le16(uuid + 6); | |
99 | data2 = get_unaligned_le16(uuid + 8); | |
100 | data1 = get_unaligned_le16(uuid + 10); | |
101 | data0 = get_unaligned_le32(uuid + 12); | |
102 | ||
103 | seq_printf(f, "%.8x-%.4x-%.4x-%.4x-%.4x%.8x\n", | |
104 | data0, data1, data2, data3, data4, data5); | |
105 | } | |
106 | hci_dev_unlock(hdev); | |
107 | ||
108 | return 0; | |
109 | } | |
110 | ||
111 | static int uuids_open(struct inode *inode, struct file *file) | |
112 | { | |
113 | return single_open(file, uuids_show, inode->i_private); | |
114 | } | |
115 | ||
116 | static const struct file_operations uuids_fops = { | |
117 | .open = uuids_open, | |
118 | .read = seq_read, | |
119 | .llseek = seq_lseek, | |
120 | .release = single_release, | |
121 | }; | |
122 | ||
baf27f6e MH |
123 | static int inquiry_cache_show(struct seq_file *f, void *p) |
124 | { | |
125 | struct hci_dev *hdev = f->private; | |
126 | struct discovery_state *cache = &hdev->discovery; | |
127 | struct inquiry_entry *e; | |
128 | ||
129 | hci_dev_lock(hdev); | |
130 | ||
131 | list_for_each_entry(e, &cache->all, all) { | |
132 | struct inquiry_data *data = &e->data; | |
133 | seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", | |
134 | &data->bdaddr, | |
135 | data->pscan_rep_mode, data->pscan_period_mode, | |
136 | data->pscan_mode, data->dev_class[2], | |
137 | data->dev_class[1], data->dev_class[0], | |
138 | __le16_to_cpu(data->clock_offset), | |
139 | data->rssi, data->ssp_mode, e->timestamp); | |
140 | } | |
141 | ||
142 | hci_dev_unlock(hdev); | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
147 | static int inquiry_cache_open(struct inode *inode, struct file *file) | |
148 | { | |
149 | return single_open(file, inquiry_cache_show, inode->i_private); | |
150 | } | |
151 | ||
152 | static const struct file_operations inquiry_cache_fops = { | |
153 | .open = inquiry_cache_open, | |
154 | .read = seq_read, | |
155 | .llseek = seq_lseek, | |
156 | .release = single_release, | |
157 | }; | |
158 | ||
041000b9 MH |
159 | static int voice_setting_get(void *data, u64 *val) |
160 | { | |
161 | struct hci_dev *hdev = data; | |
162 | ||
163 | hci_dev_lock(hdev); | |
164 | *val = hdev->voice_setting; | |
165 | hci_dev_unlock(hdev); | |
166 | ||
167 | return 0; | |
168 | } | |
169 | ||
170 | DEFINE_SIMPLE_ATTRIBUTE(voice_setting_fops, voice_setting_get, | |
171 | NULL, "0x%4.4llx\n"); | |
172 | ||
ebd1e33b MH |
173 | static int auto_accept_delay_set(void *data, u64 val) |
174 | { | |
175 | struct hci_dev *hdev = data; | |
176 | ||
177 | hci_dev_lock(hdev); | |
178 | hdev->auto_accept_delay = val; | |
179 | hci_dev_unlock(hdev); | |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
184 | static int auto_accept_delay_get(void *data, u64 *val) | |
185 | { | |
186 | struct hci_dev *hdev = data; | |
187 | ||
188 | hci_dev_lock(hdev); | |
189 | *val = hdev->auto_accept_delay; | |
190 | hci_dev_unlock(hdev); | |
191 | ||
192 | return 0; | |
193 | } | |
194 | ||
195 | DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get, | |
196 | auto_accept_delay_set, "%llu\n"); | |
197 | ||
e7b8fc92 MH |
198 | static int static_address_show(struct seq_file *f, void *p) |
199 | { | |
200 | struct hci_dev *hdev = f->private; | |
201 | ||
202 | hci_dev_lock(hdev); | |
203 | seq_printf(f, "%pMR\n", &hdev->static_addr); | |
204 | hci_dev_unlock(hdev); | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
209 | static int static_address_open(struct inode *inode, struct file *file) | |
210 | { | |
211 | return single_open(file, static_address_show, inode->i_private); | |
212 | } | |
213 | ||
214 | static const struct file_operations static_address_fops = { | |
215 | .open = static_address_open, | |
216 | .read = seq_read, | |
217 | .llseek = seq_lseek, | |
218 | .release = single_release, | |
219 | }; | |
220 | ||
1da177e4 LT |
221 | /* ---- HCI requests ---- */ |
222 | ||
42c6b129 | 223 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result) |
1da177e4 | 224 | { |
42c6b129 | 225 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
1da177e4 LT |
226 | |
227 | if (hdev->req_status == HCI_REQ_PEND) { | |
228 | hdev->req_result = result; | |
229 | hdev->req_status = HCI_REQ_DONE; | |
230 | wake_up_interruptible(&hdev->req_wait_q); | |
231 | } | |
232 | } | |
233 | ||
234 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
235 | { | |
236 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
237 | ||
238 | if (hdev->req_status == HCI_REQ_PEND) { | |
239 | hdev->req_result = err; | |
240 | hdev->req_status = HCI_REQ_CANCELED; | |
241 | wake_up_interruptible(&hdev->req_wait_q); | |
242 | } | |
243 | } | |
244 | ||
77a63e0a FW |
245 | static struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, |
246 | u8 event) | |
75e84b7c JH |
247 | { |
248 | struct hci_ev_cmd_complete *ev; | |
249 | struct hci_event_hdr *hdr; | |
250 | struct sk_buff *skb; | |
251 | ||
252 | hci_dev_lock(hdev); | |
253 | ||
254 | skb = hdev->recv_evt; | |
255 | hdev->recv_evt = NULL; | |
256 | ||
257 | hci_dev_unlock(hdev); | |
258 | ||
259 | if (!skb) | |
260 | return ERR_PTR(-ENODATA); | |
261 | ||
262 | if (skb->len < sizeof(*hdr)) { | |
263 | BT_ERR("Too short HCI event"); | |
264 | goto failed; | |
265 | } | |
266 | ||
267 | hdr = (void *) skb->data; | |
268 | skb_pull(skb, HCI_EVENT_HDR_SIZE); | |
269 | ||
7b1abbbe JH |
270 | if (event) { |
271 | if (hdr->evt != event) | |
272 | goto failed; | |
273 | return skb; | |
274 | } | |
275 | ||
75e84b7c JH |
276 | if (hdr->evt != HCI_EV_CMD_COMPLETE) { |
277 | BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt); | |
278 | goto failed; | |
279 | } | |
280 | ||
281 | if (skb->len < sizeof(*ev)) { | |
282 | BT_ERR("Too short cmd_complete event"); | |
283 | goto failed; | |
284 | } | |
285 | ||
286 | ev = (void *) skb->data; | |
287 | skb_pull(skb, sizeof(*ev)); | |
288 | ||
289 | if (opcode == __le16_to_cpu(ev->opcode)) | |
290 | return skb; | |
291 | ||
292 | BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, | |
293 | __le16_to_cpu(ev->opcode)); | |
294 | ||
295 | failed: | |
296 | kfree_skb(skb); | |
297 | return ERR_PTR(-ENODATA); | |
298 | } | |
299 | ||
7b1abbbe | 300 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
07dc93dd | 301 | const void *param, u8 event, u32 timeout) |
75e84b7c JH |
302 | { |
303 | DECLARE_WAITQUEUE(wait, current); | |
304 | struct hci_request req; | |
305 | int err = 0; | |
306 | ||
307 | BT_DBG("%s", hdev->name); | |
308 | ||
309 | hci_req_init(&req, hdev); | |
310 | ||
7b1abbbe | 311 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
312 | |
313 | hdev->req_status = HCI_REQ_PEND; | |
314 | ||
315 | err = hci_req_run(&req, hci_req_sync_complete); | |
316 | if (err < 0) | |
317 | return ERR_PTR(err); | |
318 | ||
319 | add_wait_queue(&hdev->req_wait_q, &wait); | |
320 | set_current_state(TASK_INTERRUPTIBLE); | |
321 | ||
322 | schedule_timeout(timeout); | |
323 | ||
324 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
325 | ||
326 | if (signal_pending(current)) | |
327 | return ERR_PTR(-EINTR); | |
328 | ||
329 | switch (hdev->req_status) { | |
330 | case HCI_REQ_DONE: | |
331 | err = -bt_to_errno(hdev->req_result); | |
332 | break; | |
333 | ||
334 | case HCI_REQ_CANCELED: | |
335 | err = -hdev->req_result; | |
336 | break; | |
337 | ||
338 | default: | |
339 | err = -ETIMEDOUT; | |
340 | break; | |
341 | } | |
342 | ||
343 | hdev->req_status = hdev->req_result = 0; | |
344 | ||
345 | BT_DBG("%s end: err %d", hdev->name, err); | |
346 | ||
347 | if (err < 0) | |
348 | return ERR_PTR(err); | |
349 | ||
7b1abbbe JH |
350 | return hci_get_cmd_complete(hdev, opcode, event); |
351 | } | |
352 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
353 | ||
354 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
07dc93dd | 355 | const void *param, u32 timeout) |
7b1abbbe JH |
356 | { |
357 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
358 | } |
359 | EXPORT_SYMBOL(__hci_cmd_sync); | |
360 | ||
1da177e4 | 361 | /* Execute request and wait for completion. */ |
01178cd4 | 362 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
363 | void (*func)(struct hci_request *req, |
364 | unsigned long opt), | |
01178cd4 | 365 | unsigned long opt, __u32 timeout) |
1da177e4 | 366 | { |
42c6b129 | 367 | struct hci_request req; |
1da177e4 LT |
368 | DECLARE_WAITQUEUE(wait, current); |
369 | int err = 0; | |
370 | ||
371 | BT_DBG("%s start", hdev->name); | |
372 | ||
42c6b129 JH |
373 | hci_req_init(&req, hdev); |
374 | ||
1da177e4 LT |
375 | hdev->req_status = HCI_REQ_PEND; |
376 | ||
42c6b129 | 377 | func(&req, opt); |
53cce22d | 378 | |
42c6b129 JH |
379 | err = hci_req_run(&req, hci_req_sync_complete); |
380 | if (err < 0) { | |
53cce22d | 381 | hdev->req_status = 0; |
920c8300 AG |
382 | |
383 | /* ENODATA means the HCI request command queue is empty. | |
384 | * This can happen when a request with conditionals doesn't | |
385 | * trigger any commands to be sent. This is normal behavior | |
386 | * and should not trigger an error return. | |
42c6b129 | 387 | */ |
920c8300 AG |
388 | if (err == -ENODATA) |
389 | return 0; | |
390 | ||
391 | return err; | |
53cce22d JH |
392 | } |
393 | ||
bc4445c7 AG |
394 | add_wait_queue(&hdev->req_wait_q, &wait); |
395 | set_current_state(TASK_INTERRUPTIBLE); | |
396 | ||
1da177e4 LT |
397 | schedule_timeout(timeout); |
398 | ||
399 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
400 | ||
401 | if (signal_pending(current)) | |
402 | return -EINTR; | |
403 | ||
404 | switch (hdev->req_status) { | |
405 | case HCI_REQ_DONE: | |
e175072f | 406 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
407 | break; |
408 | ||
409 | case HCI_REQ_CANCELED: | |
410 | err = -hdev->req_result; | |
411 | break; | |
412 | ||
413 | default: | |
414 | err = -ETIMEDOUT; | |
415 | break; | |
3ff50b79 | 416 | } |
1da177e4 | 417 | |
a5040efa | 418 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
419 | |
420 | BT_DBG("%s end: err %d", hdev->name, err); | |
421 | ||
422 | return err; | |
423 | } | |
424 | ||
01178cd4 | 425 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
426 | void (*req)(struct hci_request *req, |
427 | unsigned long opt), | |
01178cd4 | 428 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
429 | { |
430 | int ret; | |
431 | ||
7c6a329e MH |
432 | if (!test_bit(HCI_UP, &hdev->flags)) |
433 | return -ENETDOWN; | |
434 | ||
1da177e4 LT |
435 | /* Serialize all requests */ |
436 | hci_req_lock(hdev); | |
01178cd4 | 437 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
438 | hci_req_unlock(hdev); |
439 | ||
440 | return ret; | |
441 | } | |
442 | ||
42c6b129 | 443 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 444 | { |
42c6b129 | 445 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
446 | |
447 | /* Reset device */ | |
42c6b129 JH |
448 | set_bit(HCI_RESET, &req->hdev->flags); |
449 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
450 | } |
451 | ||
42c6b129 | 452 | static void bredr_init(struct hci_request *req) |
1da177e4 | 453 | { |
42c6b129 | 454 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 455 | |
1da177e4 | 456 | /* Read Local Supported Features */ |
42c6b129 | 457 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 458 | |
1143e5a6 | 459 | /* Read Local Version */ |
42c6b129 | 460 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
461 | |
462 | /* Read BD Address */ | |
42c6b129 | 463 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
464 | } |
465 | ||
42c6b129 | 466 | static void amp_init(struct hci_request *req) |
e61ef499 | 467 | { |
42c6b129 | 468 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 469 | |
e61ef499 | 470 | /* Read Local Version */ |
42c6b129 | 471 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 472 | |
f6996cfe MH |
473 | /* Read Local Supported Commands */ |
474 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
475 | ||
476 | /* Read Local Supported Features */ | |
477 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
478 | ||
6bcbc489 | 479 | /* Read Local AMP Info */ |
42c6b129 | 480 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
481 | |
482 | /* Read Data Blk size */ | |
42c6b129 | 483 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 484 | |
f38ba941 MH |
485 | /* Read Flow Control Mode */ |
486 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
487 | ||
7528ca1c MH |
488 | /* Read Location Data */ |
489 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
490 | } |
491 | ||
42c6b129 | 492 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 493 | { |
42c6b129 | 494 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
495 | |
496 | BT_DBG("%s %ld", hdev->name, opt); | |
497 | ||
11778716 AE |
498 | /* Reset */ |
499 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 500 | hci_reset_req(req, 0); |
11778716 | 501 | |
e61ef499 AE |
502 | switch (hdev->dev_type) { |
503 | case HCI_BREDR: | |
42c6b129 | 504 | bredr_init(req); |
e61ef499 AE |
505 | break; |
506 | ||
507 | case HCI_AMP: | |
42c6b129 | 508 | amp_init(req); |
e61ef499 AE |
509 | break; |
510 | ||
511 | default: | |
512 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
513 | break; | |
514 | } | |
e61ef499 AE |
515 | } |
516 | ||
42c6b129 | 517 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 518 | { |
4ca048e3 MH |
519 | struct hci_dev *hdev = req->hdev; |
520 | ||
2177bab5 JH |
521 | __le16 param; |
522 | __u8 flt_type; | |
523 | ||
524 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 525 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
526 | |
527 | /* Read Class of Device */ | |
42c6b129 | 528 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
529 | |
530 | /* Read Local Name */ | |
42c6b129 | 531 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
532 | |
533 | /* Read Voice Setting */ | |
42c6b129 | 534 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 535 | |
b4cb9fb2 MH |
536 | /* Read Number of Supported IAC */ |
537 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
538 | ||
4b836f39 MH |
539 | /* Read Current IAC LAP */ |
540 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
541 | ||
2177bab5 JH |
542 | /* Clear Event Filters */ |
543 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 544 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
545 | |
546 | /* Connection accept timeout ~20 secs */ | |
547 | param = __constant_cpu_to_le16(0x7d00); | |
42c6b129 | 548 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 | 549 | |
4ca048e3 MH |
550 | /* AVM Berlin (31), aka "BlueFRITZ!", reports version 1.2, |
551 | * but it does not support page scan related HCI commands. | |
552 | */ | |
553 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) { | |
f332ec66 JH |
554 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); |
555 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
556 | } | |
2177bab5 JH |
557 | } |
558 | ||
42c6b129 | 559 | static void le_setup(struct hci_request *req) |
2177bab5 | 560 | { |
c73eee91 JH |
561 | struct hci_dev *hdev = req->hdev; |
562 | ||
2177bab5 | 563 | /* Read LE Buffer Size */ |
42c6b129 | 564 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
565 | |
566 | /* Read LE Local Supported Features */ | |
42c6b129 | 567 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 JH |
568 | |
569 | /* Read LE Advertising Channel TX Power */ | |
42c6b129 | 570 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); |
2177bab5 JH |
571 | |
572 | /* Read LE White List Size */ | |
42c6b129 | 573 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 JH |
574 | |
575 | /* Read LE Supported States */ | |
42c6b129 | 576 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); |
c73eee91 JH |
577 | |
578 | /* LE-only controllers have LE implicitly enabled */ | |
579 | if (!lmp_bredr_capable(hdev)) | |
580 | set_bit(HCI_LE_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
581 | } |
582 | ||
583 | static u8 hci_get_inquiry_mode(struct hci_dev *hdev) | |
584 | { | |
585 | if (lmp_ext_inq_capable(hdev)) | |
586 | return 0x02; | |
587 | ||
588 | if (lmp_inq_rssi_capable(hdev)) | |
589 | return 0x01; | |
590 | ||
591 | if (hdev->manufacturer == 11 && hdev->hci_rev == 0x00 && | |
592 | hdev->lmp_subver == 0x0757) | |
593 | return 0x01; | |
594 | ||
595 | if (hdev->manufacturer == 15) { | |
596 | if (hdev->hci_rev == 0x03 && hdev->lmp_subver == 0x6963) | |
597 | return 0x01; | |
598 | if (hdev->hci_rev == 0x09 && hdev->lmp_subver == 0x6963) | |
599 | return 0x01; | |
600 | if (hdev->hci_rev == 0x00 && hdev->lmp_subver == 0x6965) | |
601 | return 0x01; | |
602 | } | |
603 | ||
604 | if (hdev->manufacturer == 31 && hdev->hci_rev == 0x2005 && | |
605 | hdev->lmp_subver == 0x1805) | |
606 | return 0x01; | |
607 | ||
608 | return 0x00; | |
609 | } | |
610 | ||
42c6b129 | 611 | static void hci_setup_inquiry_mode(struct hci_request *req) |
2177bab5 JH |
612 | { |
613 | u8 mode; | |
614 | ||
42c6b129 | 615 | mode = hci_get_inquiry_mode(req->hdev); |
2177bab5 | 616 | |
42c6b129 | 617 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); |
2177bab5 JH |
618 | } |
619 | ||
42c6b129 | 620 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 621 | { |
42c6b129 JH |
622 | struct hci_dev *hdev = req->hdev; |
623 | ||
2177bab5 JH |
624 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
625 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
626 | * command otherwise. | |
627 | */ | |
628 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
629 | ||
630 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
631 | * any event mask for pre 1.2 devices. | |
632 | */ | |
633 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
634 | return; | |
635 | ||
636 | if (lmp_bredr_capable(hdev)) { | |
637 | events[4] |= 0x01; /* Flow Specification Complete */ | |
638 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
639 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
640 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
641 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
642 | } else { |
643 | /* Use a different default for LE-only devices */ | |
644 | memset(events, 0, sizeof(events)); | |
645 | events[0] |= 0x10; /* Disconnection Complete */ | |
646 | events[0] |= 0x80; /* Encryption Change */ | |
647 | events[1] |= 0x08; /* Read Remote Version Information Complete */ | |
648 | events[1] |= 0x20; /* Command Complete */ | |
649 | events[1] |= 0x40; /* Command Status */ | |
650 | events[1] |= 0x80; /* Hardware Error */ | |
651 | events[2] |= 0x04; /* Number of Completed Packets */ | |
652 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
653 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
2177bab5 JH |
654 | } |
655 | ||
656 | if (lmp_inq_rssi_capable(hdev)) | |
657 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
658 | ||
659 | if (lmp_sniffsubr_capable(hdev)) | |
660 | events[5] |= 0x20; /* Sniff Subrating */ | |
661 | ||
662 | if (lmp_pause_enc_capable(hdev)) | |
663 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
664 | ||
665 | if (lmp_ext_inq_capable(hdev)) | |
666 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
667 | ||
668 | if (lmp_no_flush_capable(hdev)) | |
669 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
670 | ||
671 | if (lmp_lsto_capable(hdev)) | |
672 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
673 | ||
674 | if (lmp_ssp_capable(hdev)) { | |
675 | events[6] |= 0x01; /* IO Capability Request */ | |
676 | events[6] |= 0x02; /* IO Capability Response */ | |
677 | events[6] |= 0x04; /* User Confirmation Request */ | |
678 | events[6] |= 0x08; /* User Passkey Request */ | |
679 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
680 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
681 | events[7] |= 0x04; /* User Passkey Notification */ | |
682 | events[7] |= 0x08; /* Keypress Notification */ | |
683 | events[7] |= 0x10; /* Remote Host Supported | |
684 | * Features Notification | |
685 | */ | |
686 | } | |
687 | ||
688 | if (lmp_le_capable(hdev)) | |
689 | events[7] |= 0x20; /* LE Meta-Event */ | |
690 | ||
42c6b129 | 691 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
692 | |
693 | if (lmp_le_capable(hdev)) { | |
694 | memset(events, 0, sizeof(events)); | |
695 | events[0] = 0x1f; | |
42c6b129 JH |
696 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, |
697 | sizeof(events), events); | |
2177bab5 JH |
698 | } |
699 | } | |
700 | ||
42c6b129 | 701 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 702 | { |
42c6b129 JH |
703 | struct hci_dev *hdev = req->hdev; |
704 | ||
2177bab5 | 705 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 706 | bredr_setup(req); |
56f87901 JH |
707 | else |
708 | clear_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
709 | |
710 | if (lmp_le_capable(hdev)) | |
42c6b129 | 711 | le_setup(req); |
2177bab5 | 712 | |
42c6b129 | 713 | hci_setup_event_mask(req); |
2177bab5 | 714 | |
3f8e2d75 JH |
715 | /* AVM Berlin (31), aka "BlueFRITZ!", doesn't support the read |
716 | * local supported commands HCI command. | |
717 | */ | |
718 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) | |
42c6b129 | 719 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
720 | |
721 | if (lmp_ssp_capable(hdev)) { | |
722 | if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) { | |
723 | u8 mode = 0x01; | |
42c6b129 JH |
724 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
725 | sizeof(mode), &mode); | |
2177bab5 JH |
726 | } else { |
727 | struct hci_cp_write_eir cp; | |
728 | ||
729 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
730 | memset(&cp, 0, sizeof(cp)); | |
731 | ||
42c6b129 | 732 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
733 | } |
734 | } | |
735 | ||
736 | if (lmp_inq_rssi_capable(hdev)) | |
42c6b129 | 737 | hci_setup_inquiry_mode(req); |
2177bab5 JH |
738 | |
739 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 740 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
741 | |
742 | if (lmp_ext_feat_capable(hdev)) { | |
743 | struct hci_cp_read_local_ext_features cp; | |
744 | ||
745 | cp.page = 0x01; | |
42c6b129 JH |
746 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
747 | sizeof(cp), &cp); | |
2177bab5 JH |
748 | } |
749 | ||
750 | if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) { | |
751 | u8 enable = 1; | |
42c6b129 JH |
752 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
753 | &enable); | |
2177bab5 JH |
754 | } |
755 | } | |
756 | ||
42c6b129 | 757 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 758 | { |
42c6b129 | 759 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
760 | struct hci_cp_write_def_link_policy cp; |
761 | u16 link_policy = 0; | |
762 | ||
763 | if (lmp_rswitch_capable(hdev)) | |
764 | link_policy |= HCI_LP_RSWITCH; | |
765 | if (lmp_hold_capable(hdev)) | |
766 | link_policy |= HCI_LP_HOLD; | |
767 | if (lmp_sniff_capable(hdev)) | |
768 | link_policy |= HCI_LP_SNIFF; | |
769 | if (lmp_park_capable(hdev)) | |
770 | link_policy |= HCI_LP_PARK; | |
771 | ||
772 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 773 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
774 | } |
775 | ||
42c6b129 | 776 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 777 | { |
42c6b129 | 778 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
779 | struct hci_cp_write_le_host_supported cp; |
780 | ||
c73eee91 JH |
781 | /* LE-only devices do not support explicit enablement */ |
782 | if (!lmp_bredr_capable(hdev)) | |
783 | return; | |
784 | ||
2177bab5 JH |
785 | memset(&cp, 0, sizeof(cp)); |
786 | ||
787 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { | |
788 | cp.le = 0x01; | |
789 | cp.simul = lmp_le_br_capable(hdev); | |
790 | } | |
791 | ||
792 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
793 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
794 | &cp); | |
2177bab5 JH |
795 | } |
796 | ||
d62e6d67 JH |
797 | static void hci_set_event_mask_page_2(struct hci_request *req) |
798 | { | |
799 | struct hci_dev *hdev = req->hdev; | |
800 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
801 | ||
802 | /* If Connectionless Slave Broadcast master role is supported | |
803 | * enable all necessary events for it. | |
804 | */ | |
805 | if (hdev->features[2][0] & 0x01) { | |
806 | events[1] |= 0x40; /* Triggered Clock Capture */ | |
807 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
808 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
809 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
810 | } | |
811 | ||
812 | /* If Connectionless Slave Broadcast slave role is supported | |
813 | * enable all necessary events for it. | |
814 | */ | |
815 | if (hdev->features[2][0] & 0x02) { | |
816 | events[2] |= 0x01; /* Synchronization Train Received */ | |
817 | events[2] |= 0x02; /* CSB Receive */ | |
818 | events[2] |= 0x04; /* CSB Timeout */ | |
819 | events[2] |= 0x08; /* Truncated Page Complete */ | |
820 | } | |
821 | ||
822 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); | |
823 | } | |
824 | ||
42c6b129 | 825 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 826 | { |
42c6b129 | 827 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 828 | u8 p; |
42c6b129 | 829 | |
b8f4e068 GP |
830 | /* Some Broadcom based Bluetooth controllers do not support the |
831 | * Delete Stored Link Key command. They are clearly indicating its | |
832 | * absence in the bit mask of supported commands. | |
833 | * | |
834 | * Check the supported commands and only if the the command is marked | |
835 | * as supported send it. If not supported assume that the controller | |
836 | * does not have actual support for stored link keys which makes this | |
837 | * command redundant anyway. | |
637b4cae | 838 | */ |
59f45d57 JH |
839 | if (hdev->commands[6] & 0x80) { |
840 | struct hci_cp_delete_stored_link_key cp; | |
841 | ||
842 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
843 | cp.delete_all = 0x01; | |
844 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
845 | sizeof(cp), &cp); | |
846 | } | |
847 | ||
2177bab5 | 848 | if (hdev->commands[5] & 0x10) |
42c6b129 | 849 | hci_setup_link_policy(req); |
2177bab5 | 850 | |
441ad2d0 | 851 | if (lmp_le_capable(hdev)) |
42c6b129 | 852 | hci_set_le_support(req); |
d2c5d77f JH |
853 | |
854 | /* Read features beyond page 1 if available */ | |
855 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
856 | struct hci_cp_read_local_ext_features cp; | |
857 | ||
858 | cp.page = p; | |
859 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
860 | sizeof(cp), &cp); | |
861 | } | |
2177bab5 JH |
862 | } |
863 | ||
5d4e7e8d JH |
864 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
865 | { | |
866 | struct hci_dev *hdev = req->hdev; | |
867 | ||
d62e6d67 JH |
868 | /* Set event mask page 2 if the HCI command for it is supported */ |
869 | if (hdev->commands[22] & 0x04) | |
870 | hci_set_event_mask_page_2(req); | |
871 | ||
5d4e7e8d JH |
872 | /* Check for Synchronization Train support */ |
873 | if (hdev->features[2][0] & 0x04) | |
874 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); | |
875 | } | |
876 | ||
2177bab5 JH |
877 | static int __hci_init(struct hci_dev *hdev) |
878 | { | |
879 | int err; | |
880 | ||
881 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
882 | if (err < 0) | |
883 | return err; | |
884 | ||
885 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode | |
886 | * BR/EDR/LE type controllers. AMP controllers only need the | |
887 | * first stage init. | |
888 | */ | |
889 | if (hdev->dev_type != HCI_BREDR) | |
890 | return 0; | |
891 | ||
892 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); | |
893 | if (err < 0) | |
894 | return err; | |
895 | ||
5d4e7e8d JH |
896 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
897 | if (err < 0) | |
898 | return err; | |
899 | ||
baf27f6e MH |
900 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); |
901 | if (err < 0) | |
902 | return err; | |
903 | ||
904 | /* Only create debugfs entries during the initial setup | |
905 | * phase and not every time the controller gets powered on. | |
906 | */ | |
907 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) | |
908 | return 0; | |
909 | ||
70afe0b8 MH |
910 | debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev, |
911 | &blacklist_fops); | |
912 | ||
47219839 MH |
913 | debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops); |
914 | ||
baf27f6e MH |
915 | if (lmp_bredr_capable(hdev)) { |
916 | debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, | |
917 | hdev, &inquiry_cache_fops); | |
041000b9 MH |
918 | debugfs_create_file("voice_setting", 0444, hdev->debugfs, |
919 | hdev, &voice_setting_fops); | |
baf27f6e MH |
920 | } |
921 | ||
ebd1e33b MH |
922 | if (lmp_ssp_capable(hdev)) |
923 | debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs, | |
924 | hdev, &auto_accept_delay_fops); | |
925 | ||
e7b8fc92 MH |
926 | if (lmp_le_capable(hdev)) |
927 | debugfs_create_file("static_address", 0444, hdev->debugfs, | |
928 | hdev, &static_address_fops); | |
929 | ||
baf27f6e | 930 | return 0; |
2177bab5 JH |
931 | } |
932 | ||
42c6b129 | 933 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
934 | { |
935 | __u8 scan = opt; | |
936 | ||
42c6b129 | 937 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
938 | |
939 | /* Inquiry and Page scans */ | |
42c6b129 | 940 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
941 | } |
942 | ||
42c6b129 | 943 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
944 | { |
945 | __u8 auth = opt; | |
946 | ||
42c6b129 | 947 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
948 | |
949 | /* Authentication */ | |
42c6b129 | 950 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
951 | } |
952 | ||
42c6b129 | 953 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
954 | { |
955 | __u8 encrypt = opt; | |
956 | ||
42c6b129 | 957 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 958 | |
e4e8e37c | 959 | /* Encryption */ |
42c6b129 | 960 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
961 | } |
962 | ||
42c6b129 | 963 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
964 | { |
965 | __le16 policy = cpu_to_le16(opt); | |
966 | ||
42c6b129 | 967 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
968 | |
969 | /* Default link policy */ | |
42c6b129 | 970 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
971 | } |
972 | ||
8e87d142 | 973 | /* Get HCI device by index. |
1da177e4 LT |
974 | * Device is held on return. */ |
975 | struct hci_dev *hci_dev_get(int index) | |
976 | { | |
8035ded4 | 977 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
978 | |
979 | BT_DBG("%d", index); | |
980 | ||
981 | if (index < 0) | |
982 | return NULL; | |
983 | ||
984 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 985 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
986 | if (d->id == index) { |
987 | hdev = hci_dev_hold(d); | |
988 | break; | |
989 | } | |
990 | } | |
991 | read_unlock(&hci_dev_list_lock); | |
992 | return hdev; | |
993 | } | |
1da177e4 LT |
994 | |
995 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 996 | |
30dc78e1 JH |
997 | bool hci_discovery_active(struct hci_dev *hdev) |
998 | { | |
999 | struct discovery_state *discov = &hdev->discovery; | |
1000 | ||
6fbe195d | 1001 | switch (discov->state) { |
343f935b | 1002 | case DISCOVERY_FINDING: |
6fbe195d | 1003 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
1004 | return true; |
1005 | ||
6fbe195d AG |
1006 | default: |
1007 | return false; | |
1008 | } | |
30dc78e1 JH |
1009 | } |
1010 | ||
ff9ef578 JH |
1011 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
1012 | { | |
1013 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); | |
1014 | ||
1015 | if (hdev->discovery.state == state) | |
1016 | return; | |
1017 | ||
1018 | switch (state) { | |
1019 | case DISCOVERY_STOPPED: | |
7b99b659 AG |
1020 | if (hdev->discovery.state != DISCOVERY_STARTING) |
1021 | mgmt_discovering(hdev, 0); | |
ff9ef578 JH |
1022 | break; |
1023 | case DISCOVERY_STARTING: | |
1024 | break; | |
343f935b | 1025 | case DISCOVERY_FINDING: |
ff9ef578 JH |
1026 | mgmt_discovering(hdev, 1); |
1027 | break; | |
30dc78e1 JH |
1028 | case DISCOVERY_RESOLVING: |
1029 | break; | |
ff9ef578 JH |
1030 | case DISCOVERY_STOPPING: |
1031 | break; | |
1032 | } | |
1033 | ||
1034 | hdev->discovery.state = state; | |
1035 | } | |
1036 | ||
1f9b9a5d | 1037 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 1038 | { |
30883512 | 1039 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 1040 | struct inquiry_entry *p, *n; |
1da177e4 | 1041 | |
561aafbc JH |
1042 | list_for_each_entry_safe(p, n, &cache->all, all) { |
1043 | list_del(&p->all); | |
b57c1a56 | 1044 | kfree(p); |
1da177e4 | 1045 | } |
561aafbc JH |
1046 | |
1047 | INIT_LIST_HEAD(&cache->unknown); | |
1048 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
1049 | } |
1050 | ||
a8c5fb1a GP |
1051 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
1052 | bdaddr_t *bdaddr) | |
1da177e4 | 1053 | { |
30883512 | 1054 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1055 | struct inquiry_entry *e; |
1056 | ||
6ed93dc6 | 1057 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1058 | |
561aafbc JH |
1059 | list_for_each_entry(e, &cache->all, all) { |
1060 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1061 | return e; | |
1062 | } | |
1063 | ||
1064 | return NULL; | |
1065 | } | |
1066 | ||
1067 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 1068 | bdaddr_t *bdaddr) |
561aafbc | 1069 | { |
30883512 | 1070 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
1071 | struct inquiry_entry *e; |
1072 | ||
6ed93dc6 | 1073 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
1074 | |
1075 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 1076 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
1077 | return e; |
1078 | } | |
1079 | ||
1080 | return NULL; | |
1da177e4 LT |
1081 | } |
1082 | ||
30dc78e1 | 1083 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
1084 | bdaddr_t *bdaddr, |
1085 | int state) | |
30dc78e1 JH |
1086 | { |
1087 | struct discovery_state *cache = &hdev->discovery; | |
1088 | struct inquiry_entry *e; | |
1089 | ||
6ed93dc6 | 1090 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
1091 | |
1092 | list_for_each_entry(e, &cache->resolve, list) { | |
1093 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
1094 | return e; | |
1095 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1096 | return e; | |
1097 | } | |
1098 | ||
1099 | return NULL; | |
1100 | } | |
1101 | ||
a3d4e20a | 1102 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 1103 | struct inquiry_entry *ie) |
a3d4e20a JH |
1104 | { |
1105 | struct discovery_state *cache = &hdev->discovery; | |
1106 | struct list_head *pos = &cache->resolve; | |
1107 | struct inquiry_entry *p; | |
1108 | ||
1109 | list_del(&ie->list); | |
1110 | ||
1111 | list_for_each_entry(p, &cache->resolve, list) { | |
1112 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 1113 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
1114 | break; |
1115 | pos = &p->list; | |
1116 | } | |
1117 | ||
1118 | list_add(&ie->list, pos); | |
1119 | } | |
1120 | ||
3175405b | 1121 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
04124681 | 1122 | bool name_known, bool *ssp) |
1da177e4 | 1123 | { |
30883512 | 1124 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 1125 | struct inquiry_entry *ie; |
1da177e4 | 1126 | |
6ed93dc6 | 1127 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 1128 | |
2b2fec4d SJ |
1129 | hci_remove_remote_oob_data(hdev, &data->bdaddr); |
1130 | ||
388fc8fa JH |
1131 | if (ssp) |
1132 | *ssp = data->ssp_mode; | |
1133 | ||
70f23020 | 1134 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 1135 | if (ie) { |
388fc8fa JH |
1136 | if (ie->data.ssp_mode && ssp) |
1137 | *ssp = true; | |
1138 | ||
a3d4e20a | 1139 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 1140 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
1141 | ie->data.rssi = data->rssi; |
1142 | hci_inquiry_cache_update_resolve(hdev, ie); | |
1143 | } | |
1144 | ||
561aafbc | 1145 | goto update; |
a3d4e20a | 1146 | } |
561aafbc JH |
1147 | |
1148 | /* Entry not in the cache. Add new one. */ | |
1149 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
1150 | if (!ie) | |
3175405b | 1151 | return false; |
561aafbc JH |
1152 | |
1153 | list_add(&ie->all, &cache->all); | |
1154 | ||
1155 | if (name_known) { | |
1156 | ie->name_state = NAME_KNOWN; | |
1157 | } else { | |
1158 | ie->name_state = NAME_NOT_KNOWN; | |
1159 | list_add(&ie->list, &cache->unknown); | |
1160 | } | |
70f23020 | 1161 | |
561aafbc JH |
1162 | update: |
1163 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 1164 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
1165 | ie->name_state = NAME_KNOWN; |
1166 | list_del(&ie->list); | |
1da177e4 LT |
1167 | } |
1168 | ||
70f23020 AE |
1169 | memcpy(&ie->data, data, sizeof(*data)); |
1170 | ie->timestamp = jiffies; | |
1da177e4 | 1171 | cache->timestamp = jiffies; |
3175405b JH |
1172 | |
1173 | if (ie->name_state == NAME_NOT_KNOWN) | |
1174 | return false; | |
1175 | ||
1176 | return true; | |
1da177e4 LT |
1177 | } |
1178 | ||
1179 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
1180 | { | |
30883512 | 1181 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1182 | struct inquiry_info *info = (struct inquiry_info *) buf; |
1183 | struct inquiry_entry *e; | |
1184 | int copied = 0; | |
1185 | ||
561aafbc | 1186 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 1187 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
1188 | |
1189 | if (copied >= num) | |
1190 | break; | |
1191 | ||
1da177e4 LT |
1192 | bacpy(&info->bdaddr, &data->bdaddr); |
1193 | info->pscan_rep_mode = data->pscan_rep_mode; | |
1194 | info->pscan_period_mode = data->pscan_period_mode; | |
1195 | info->pscan_mode = data->pscan_mode; | |
1196 | memcpy(info->dev_class, data->dev_class, 3); | |
1197 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 1198 | |
1da177e4 | 1199 | info++; |
b57c1a56 | 1200 | copied++; |
1da177e4 LT |
1201 | } |
1202 | ||
1203 | BT_DBG("cache %p, copied %d", cache, copied); | |
1204 | return copied; | |
1205 | } | |
1206 | ||
42c6b129 | 1207 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1208 | { |
1209 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1210 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1211 | struct hci_cp_inquiry cp; |
1212 | ||
1213 | BT_DBG("%s", hdev->name); | |
1214 | ||
1215 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
1216 | return; | |
1217 | ||
1218 | /* Start Inquiry */ | |
1219 | memcpy(&cp.lap, &ir->lap, 3); | |
1220 | cp.length = ir->length; | |
1221 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1222 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
1223 | } |
1224 | ||
3e13fa1e AG |
1225 | static int wait_inquiry(void *word) |
1226 | { | |
1227 | schedule(); | |
1228 | return signal_pending(current); | |
1229 | } | |
1230 | ||
1da177e4 LT |
1231 | int hci_inquiry(void __user *arg) |
1232 | { | |
1233 | __u8 __user *ptr = arg; | |
1234 | struct hci_inquiry_req ir; | |
1235 | struct hci_dev *hdev; | |
1236 | int err = 0, do_inquiry = 0, max_rsp; | |
1237 | long timeo; | |
1238 | __u8 *buf; | |
1239 | ||
1240 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1241 | return -EFAULT; | |
1242 | ||
5a08ecce AE |
1243 | hdev = hci_dev_get(ir.dev_id); |
1244 | if (!hdev) | |
1da177e4 LT |
1245 | return -ENODEV; |
1246 | ||
0736cfa8 MH |
1247 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1248 | err = -EBUSY; | |
1249 | goto done; | |
1250 | } | |
1251 | ||
5b69bef5 MH |
1252 | if (hdev->dev_type != HCI_BREDR) { |
1253 | err = -EOPNOTSUPP; | |
1254 | goto done; | |
1255 | } | |
1256 | ||
56f87901 JH |
1257 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
1258 | err = -EOPNOTSUPP; | |
1259 | goto done; | |
1260 | } | |
1261 | ||
09fd0de5 | 1262 | hci_dev_lock(hdev); |
8e87d142 | 1263 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1264 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1265 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1266 | do_inquiry = 1; |
1267 | } | |
09fd0de5 | 1268 | hci_dev_unlock(hdev); |
1da177e4 | 1269 | |
04837f64 | 1270 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1271 | |
1272 | if (do_inquiry) { | |
01178cd4 JH |
1273 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
1274 | timeo); | |
70f23020 AE |
1275 | if (err < 0) |
1276 | goto done; | |
3e13fa1e AG |
1277 | |
1278 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1279 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1280 | */ | |
1281 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, wait_inquiry, | |
1282 | TASK_INTERRUPTIBLE)) | |
1283 | return -EINTR; | |
70f23020 | 1284 | } |
1da177e4 | 1285 | |
8fc9ced3 GP |
1286 | /* for unlimited number of responses we will use buffer with |
1287 | * 255 entries | |
1288 | */ | |
1da177e4 LT |
1289 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1290 | ||
1291 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1292 | * copy it to the user space. | |
1293 | */ | |
01df8c31 | 1294 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 1295 | if (!buf) { |
1da177e4 LT |
1296 | err = -ENOMEM; |
1297 | goto done; | |
1298 | } | |
1299 | ||
09fd0de5 | 1300 | hci_dev_lock(hdev); |
1da177e4 | 1301 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1302 | hci_dev_unlock(hdev); |
1da177e4 LT |
1303 | |
1304 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1305 | ||
1306 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1307 | ptr += sizeof(ir); | |
1308 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1309 | ir.num_rsp)) |
1da177e4 | 1310 | err = -EFAULT; |
8e87d142 | 1311 | } else |
1da177e4 LT |
1312 | err = -EFAULT; |
1313 | ||
1314 | kfree(buf); | |
1315 | ||
1316 | done: | |
1317 | hci_dev_put(hdev); | |
1318 | return err; | |
1319 | } | |
1320 | ||
cbed0ca1 | 1321 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1322 | { |
1da177e4 LT |
1323 | int ret = 0; |
1324 | ||
1da177e4 LT |
1325 | BT_DBG("%s %p", hdev->name, hdev); |
1326 | ||
1327 | hci_req_lock(hdev); | |
1328 | ||
94324962 JH |
1329 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
1330 | ret = -ENODEV; | |
1331 | goto done; | |
1332 | } | |
1333 | ||
a5c8f270 MH |
1334 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) { |
1335 | /* Check for rfkill but allow the HCI setup stage to | |
1336 | * proceed (which in itself doesn't cause any RF activity). | |
1337 | */ | |
1338 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags)) { | |
1339 | ret = -ERFKILL; | |
1340 | goto done; | |
1341 | } | |
1342 | ||
1343 | /* Check for valid public address or a configured static | |
1344 | * random adddress, but let the HCI setup proceed to | |
1345 | * be able to determine if there is a public address | |
1346 | * or not. | |
1347 | * | |
1348 | * This check is only valid for BR/EDR controllers | |
1349 | * since AMP controllers do not have an address. | |
1350 | */ | |
1351 | if (hdev->dev_type == HCI_BREDR && | |
1352 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
1353 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1354 | ret = -EADDRNOTAVAIL; | |
1355 | goto done; | |
1356 | } | |
611b30f7 MH |
1357 | } |
1358 | ||
1da177e4 LT |
1359 | if (test_bit(HCI_UP, &hdev->flags)) { |
1360 | ret = -EALREADY; | |
1361 | goto done; | |
1362 | } | |
1363 | ||
1da177e4 LT |
1364 | if (hdev->open(hdev)) { |
1365 | ret = -EIO; | |
1366 | goto done; | |
1367 | } | |
1368 | ||
f41c70c4 MH |
1369 | atomic_set(&hdev->cmd_cnt, 1); |
1370 | set_bit(HCI_INIT, &hdev->flags); | |
1371 | ||
1372 | if (hdev->setup && test_bit(HCI_SETUP, &hdev->dev_flags)) | |
1373 | ret = hdev->setup(hdev); | |
1374 | ||
1375 | if (!ret) { | |
f41c70c4 MH |
1376 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
1377 | set_bit(HCI_RAW, &hdev->flags); | |
1378 | ||
0736cfa8 MH |
1379 | if (!test_bit(HCI_RAW, &hdev->flags) && |
1380 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) | |
f41c70c4 | 1381 | ret = __hci_init(hdev); |
1da177e4 LT |
1382 | } |
1383 | ||
f41c70c4 MH |
1384 | clear_bit(HCI_INIT, &hdev->flags); |
1385 | ||
1da177e4 LT |
1386 | if (!ret) { |
1387 | hci_dev_hold(hdev); | |
1388 | set_bit(HCI_UP, &hdev->flags); | |
1389 | hci_notify(hdev, HCI_DEV_UP); | |
bb4b2a9a | 1390 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
0736cfa8 | 1391 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
1514b892 | 1392 | hdev->dev_type == HCI_BREDR) { |
09fd0de5 | 1393 | hci_dev_lock(hdev); |
744cf19e | 1394 | mgmt_powered(hdev, 1); |
09fd0de5 | 1395 | hci_dev_unlock(hdev); |
56e5cb86 | 1396 | } |
8e87d142 | 1397 | } else { |
1da177e4 | 1398 | /* Init failed, cleanup */ |
3eff45ea | 1399 | flush_work(&hdev->tx_work); |
c347b765 | 1400 | flush_work(&hdev->cmd_work); |
b78752cc | 1401 | flush_work(&hdev->rx_work); |
1da177e4 LT |
1402 | |
1403 | skb_queue_purge(&hdev->cmd_q); | |
1404 | skb_queue_purge(&hdev->rx_q); | |
1405 | ||
1406 | if (hdev->flush) | |
1407 | hdev->flush(hdev); | |
1408 | ||
1409 | if (hdev->sent_cmd) { | |
1410 | kfree_skb(hdev->sent_cmd); | |
1411 | hdev->sent_cmd = NULL; | |
1412 | } | |
1413 | ||
1414 | hdev->close(hdev); | |
1415 | hdev->flags = 0; | |
1416 | } | |
1417 | ||
1418 | done: | |
1419 | hci_req_unlock(hdev); | |
1da177e4 LT |
1420 | return ret; |
1421 | } | |
1422 | ||
cbed0ca1 JH |
1423 | /* ---- HCI ioctl helpers ---- */ |
1424 | ||
1425 | int hci_dev_open(__u16 dev) | |
1426 | { | |
1427 | struct hci_dev *hdev; | |
1428 | int err; | |
1429 | ||
1430 | hdev = hci_dev_get(dev); | |
1431 | if (!hdev) | |
1432 | return -ENODEV; | |
1433 | ||
e1d08f40 JH |
1434 | /* We need to ensure that no other power on/off work is pending |
1435 | * before proceeding to call hci_dev_do_open. This is | |
1436 | * particularly important if the setup procedure has not yet | |
1437 | * completed. | |
1438 | */ | |
1439 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
1440 | cancel_delayed_work(&hdev->power_off); | |
1441 | ||
a5c8f270 MH |
1442 | /* After this call it is guaranteed that the setup procedure |
1443 | * has finished. This means that error conditions like RFKILL | |
1444 | * or no valid public or static random address apply. | |
1445 | */ | |
e1d08f40 JH |
1446 | flush_workqueue(hdev->req_workqueue); |
1447 | ||
cbed0ca1 JH |
1448 | err = hci_dev_do_open(hdev); |
1449 | ||
1450 | hci_dev_put(hdev); | |
1451 | ||
1452 | return err; | |
1453 | } | |
1454 | ||
1da177e4 LT |
1455 | static int hci_dev_do_close(struct hci_dev *hdev) |
1456 | { | |
1457 | BT_DBG("%s %p", hdev->name, hdev); | |
1458 | ||
78c04c0b VCG |
1459 | cancel_delayed_work(&hdev->power_off); |
1460 | ||
1da177e4 LT |
1461 | hci_req_cancel(hdev, ENODEV); |
1462 | hci_req_lock(hdev); | |
1463 | ||
1464 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 1465 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
1466 | hci_req_unlock(hdev); |
1467 | return 0; | |
1468 | } | |
1469 | ||
3eff45ea GP |
1470 | /* Flush RX and TX works */ |
1471 | flush_work(&hdev->tx_work); | |
b78752cc | 1472 | flush_work(&hdev->rx_work); |
1da177e4 | 1473 | |
16ab91ab | 1474 | if (hdev->discov_timeout > 0) { |
e0f9309f | 1475 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 1476 | hdev->discov_timeout = 0; |
5e5282bb | 1477 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
310a3d48 | 1478 | clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
1479 | } |
1480 | ||
a8b2d5c2 | 1481 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
1482 | cancel_delayed_work(&hdev->service_cache); |
1483 | ||
7ba8b4be AG |
1484 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
1485 | ||
09fd0de5 | 1486 | hci_dev_lock(hdev); |
1f9b9a5d | 1487 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1488 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1489 | hci_dev_unlock(hdev); |
1da177e4 LT |
1490 | |
1491 | hci_notify(hdev, HCI_DEV_DOWN); | |
1492 | ||
1493 | if (hdev->flush) | |
1494 | hdev->flush(hdev); | |
1495 | ||
1496 | /* Reset device */ | |
1497 | skb_queue_purge(&hdev->cmd_q); | |
1498 | atomic_set(&hdev->cmd_cnt, 1); | |
8af59467 | 1499 | if (!test_bit(HCI_RAW, &hdev->flags) && |
3a6afbd2 | 1500 | !test_bit(HCI_AUTO_OFF, &hdev->dev_flags) && |
a6c511c6 | 1501 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 1502 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 1503 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
1504 | clear_bit(HCI_INIT, &hdev->flags); |
1505 | } | |
1506 | ||
c347b765 GP |
1507 | /* flush cmd work */ |
1508 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
1509 | |
1510 | /* Drop queues */ | |
1511 | skb_queue_purge(&hdev->rx_q); | |
1512 | skb_queue_purge(&hdev->cmd_q); | |
1513 | skb_queue_purge(&hdev->raw_q); | |
1514 | ||
1515 | /* Drop last sent command */ | |
1516 | if (hdev->sent_cmd) { | |
b79f44c1 | 1517 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
1518 | kfree_skb(hdev->sent_cmd); |
1519 | hdev->sent_cmd = NULL; | |
1520 | } | |
1521 | ||
b6ddb638 JH |
1522 | kfree_skb(hdev->recv_evt); |
1523 | hdev->recv_evt = NULL; | |
1524 | ||
1da177e4 LT |
1525 | /* After this point our queues are empty |
1526 | * and no tasks are scheduled. */ | |
1527 | hdev->close(hdev); | |
1528 | ||
35b973c9 JH |
1529 | /* Clear flags */ |
1530 | hdev->flags = 0; | |
1531 | hdev->dev_flags &= ~HCI_PERSISTENT_MASK; | |
1532 | ||
93c311a0 MH |
1533 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { |
1534 | if (hdev->dev_type == HCI_BREDR) { | |
1535 | hci_dev_lock(hdev); | |
1536 | mgmt_powered(hdev, 0); | |
1537 | hci_dev_unlock(hdev); | |
1538 | } | |
8ee56540 | 1539 | } |
5add6af8 | 1540 | |
ced5c338 | 1541 | /* Controller radio is available but is currently powered down */ |
536619e8 | 1542 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 1543 | |
e59fda8d | 1544 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 1545 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
e59fda8d | 1546 | |
1da177e4 LT |
1547 | hci_req_unlock(hdev); |
1548 | ||
1549 | hci_dev_put(hdev); | |
1550 | return 0; | |
1551 | } | |
1552 | ||
1553 | int hci_dev_close(__u16 dev) | |
1554 | { | |
1555 | struct hci_dev *hdev; | |
1556 | int err; | |
1557 | ||
70f23020 AE |
1558 | hdev = hci_dev_get(dev); |
1559 | if (!hdev) | |
1da177e4 | 1560 | return -ENODEV; |
8ee56540 | 1561 | |
0736cfa8 MH |
1562 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1563 | err = -EBUSY; | |
1564 | goto done; | |
1565 | } | |
1566 | ||
8ee56540 MH |
1567 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
1568 | cancel_delayed_work(&hdev->power_off); | |
1569 | ||
1da177e4 | 1570 | err = hci_dev_do_close(hdev); |
8ee56540 | 1571 | |
0736cfa8 | 1572 | done: |
1da177e4 LT |
1573 | hci_dev_put(hdev); |
1574 | return err; | |
1575 | } | |
1576 | ||
1577 | int hci_dev_reset(__u16 dev) | |
1578 | { | |
1579 | struct hci_dev *hdev; | |
1580 | int ret = 0; | |
1581 | ||
70f23020 AE |
1582 | hdev = hci_dev_get(dev); |
1583 | if (!hdev) | |
1da177e4 LT |
1584 | return -ENODEV; |
1585 | ||
1586 | hci_req_lock(hdev); | |
1da177e4 | 1587 | |
808a049e MH |
1588 | if (!test_bit(HCI_UP, &hdev->flags)) { |
1589 | ret = -ENETDOWN; | |
1da177e4 | 1590 | goto done; |
808a049e | 1591 | } |
1da177e4 | 1592 | |
0736cfa8 MH |
1593 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1594 | ret = -EBUSY; | |
1595 | goto done; | |
1596 | } | |
1597 | ||
1da177e4 LT |
1598 | /* Drop queues */ |
1599 | skb_queue_purge(&hdev->rx_q); | |
1600 | skb_queue_purge(&hdev->cmd_q); | |
1601 | ||
09fd0de5 | 1602 | hci_dev_lock(hdev); |
1f9b9a5d | 1603 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 1604 | hci_conn_hash_flush(hdev); |
09fd0de5 | 1605 | hci_dev_unlock(hdev); |
1da177e4 LT |
1606 | |
1607 | if (hdev->flush) | |
1608 | hdev->flush(hdev); | |
1609 | ||
8e87d142 | 1610 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 1611 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
1612 | |
1613 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
01178cd4 | 1614 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
1615 | |
1616 | done: | |
1da177e4 LT |
1617 | hci_req_unlock(hdev); |
1618 | hci_dev_put(hdev); | |
1619 | return ret; | |
1620 | } | |
1621 | ||
1622 | int hci_dev_reset_stat(__u16 dev) | |
1623 | { | |
1624 | struct hci_dev *hdev; | |
1625 | int ret = 0; | |
1626 | ||
70f23020 AE |
1627 | hdev = hci_dev_get(dev); |
1628 | if (!hdev) | |
1da177e4 LT |
1629 | return -ENODEV; |
1630 | ||
0736cfa8 MH |
1631 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1632 | ret = -EBUSY; | |
1633 | goto done; | |
1634 | } | |
1635 | ||
1da177e4 LT |
1636 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
1637 | ||
0736cfa8 | 1638 | done: |
1da177e4 | 1639 | hci_dev_put(hdev); |
1da177e4 LT |
1640 | return ret; |
1641 | } | |
1642 | ||
1643 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
1644 | { | |
1645 | struct hci_dev *hdev; | |
1646 | struct hci_dev_req dr; | |
1647 | int err = 0; | |
1648 | ||
1649 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
1650 | return -EFAULT; | |
1651 | ||
70f23020 AE |
1652 | hdev = hci_dev_get(dr.dev_id); |
1653 | if (!hdev) | |
1da177e4 LT |
1654 | return -ENODEV; |
1655 | ||
0736cfa8 MH |
1656 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1657 | err = -EBUSY; | |
1658 | goto done; | |
1659 | } | |
1660 | ||
5b69bef5 MH |
1661 | if (hdev->dev_type != HCI_BREDR) { |
1662 | err = -EOPNOTSUPP; | |
1663 | goto done; | |
1664 | } | |
1665 | ||
56f87901 JH |
1666 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
1667 | err = -EOPNOTSUPP; | |
1668 | goto done; | |
1669 | } | |
1670 | ||
1da177e4 LT |
1671 | switch (cmd) { |
1672 | case HCISETAUTH: | |
01178cd4 JH |
1673 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1674 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1675 | break; |
1676 | ||
1677 | case HCISETENCRYPT: | |
1678 | if (!lmp_encrypt_capable(hdev)) { | |
1679 | err = -EOPNOTSUPP; | |
1680 | break; | |
1681 | } | |
1682 | ||
1683 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
1684 | /* Auth must be enabled first */ | |
01178cd4 JH |
1685 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
1686 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1687 | if (err) |
1688 | break; | |
1689 | } | |
1690 | ||
01178cd4 JH |
1691 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
1692 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1693 | break; |
1694 | ||
1695 | case HCISETSCAN: | |
01178cd4 JH |
1696 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
1697 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1698 | break; |
1699 | ||
1da177e4 | 1700 | case HCISETLINKPOL: |
01178cd4 JH |
1701 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
1702 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
1703 | break; |
1704 | ||
1705 | case HCISETLINKMODE: | |
e4e8e37c MH |
1706 | hdev->link_mode = ((__u16) dr.dev_opt) & |
1707 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
1708 | break; | |
1709 | ||
1710 | case HCISETPTYPE: | |
1711 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
1712 | break; |
1713 | ||
1714 | case HCISETACLMTU: | |
e4e8e37c MH |
1715 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
1716 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1717 | break; |
1718 | ||
1719 | case HCISETSCOMTU: | |
e4e8e37c MH |
1720 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
1721 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
1722 | break; |
1723 | ||
1724 | default: | |
1725 | err = -EINVAL; | |
1726 | break; | |
1727 | } | |
e4e8e37c | 1728 | |
0736cfa8 | 1729 | done: |
1da177e4 LT |
1730 | hci_dev_put(hdev); |
1731 | return err; | |
1732 | } | |
1733 | ||
1734 | int hci_get_dev_list(void __user *arg) | |
1735 | { | |
8035ded4 | 1736 | struct hci_dev *hdev; |
1da177e4 LT |
1737 | struct hci_dev_list_req *dl; |
1738 | struct hci_dev_req *dr; | |
1da177e4 LT |
1739 | int n = 0, size, err; |
1740 | __u16 dev_num; | |
1741 | ||
1742 | if (get_user(dev_num, (__u16 __user *) arg)) | |
1743 | return -EFAULT; | |
1744 | ||
1745 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
1746 | return -EINVAL; | |
1747 | ||
1748 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
1749 | ||
70f23020 AE |
1750 | dl = kzalloc(size, GFP_KERNEL); |
1751 | if (!dl) | |
1da177e4 LT |
1752 | return -ENOMEM; |
1753 | ||
1754 | dr = dl->dev_req; | |
1755 | ||
f20d09d5 | 1756 | read_lock(&hci_dev_list_lock); |
8035ded4 | 1757 | list_for_each_entry(hdev, &hci_dev_list, list) { |
a8b2d5c2 | 1758 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 1759 | cancel_delayed_work(&hdev->power_off); |
c542a06c | 1760 | |
a8b2d5c2 JH |
1761 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1762 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1763 | |
1da177e4 LT |
1764 | (dr + n)->dev_id = hdev->id; |
1765 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 1766 | |
1da177e4 LT |
1767 | if (++n >= dev_num) |
1768 | break; | |
1769 | } | |
f20d09d5 | 1770 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1771 | |
1772 | dl->dev_num = n; | |
1773 | size = sizeof(*dl) + n * sizeof(*dr); | |
1774 | ||
1775 | err = copy_to_user(arg, dl, size); | |
1776 | kfree(dl); | |
1777 | ||
1778 | return err ? -EFAULT : 0; | |
1779 | } | |
1780 | ||
1781 | int hci_get_dev_info(void __user *arg) | |
1782 | { | |
1783 | struct hci_dev *hdev; | |
1784 | struct hci_dev_info di; | |
1785 | int err = 0; | |
1786 | ||
1787 | if (copy_from_user(&di, arg, sizeof(di))) | |
1788 | return -EFAULT; | |
1789 | ||
70f23020 AE |
1790 | hdev = hci_dev_get(di.dev_id); |
1791 | if (!hdev) | |
1da177e4 LT |
1792 | return -ENODEV; |
1793 | ||
a8b2d5c2 | 1794 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
3243553f | 1795 | cancel_delayed_work_sync(&hdev->power_off); |
ab81cbf9 | 1796 | |
a8b2d5c2 JH |
1797 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
1798 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 1799 | |
1da177e4 LT |
1800 | strcpy(di.name, hdev->name); |
1801 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 1802 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
1da177e4 LT |
1803 | di.flags = hdev->flags; |
1804 | di.pkt_type = hdev->pkt_type; | |
572c7f84 JH |
1805 | if (lmp_bredr_capable(hdev)) { |
1806 | di.acl_mtu = hdev->acl_mtu; | |
1807 | di.acl_pkts = hdev->acl_pkts; | |
1808 | di.sco_mtu = hdev->sco_mtu; | |
1809 | di.sco_pkts = hdev->sco_pkts; | |
1810 | } else { | |
1811 | di.acl_mtu = hdev->le_mtu; | |
1812 | di.acl_pkts = hdev->le_pkts; | |
1813 | di.sco_mtu = 0; | |
1814 | di.sco_pkts = 0; | |
1815 | } | |
1da177e4 LT |
1816 | di.link_policy = hdev->link_policy; |
1817 | di.link_mode = hdev->link_mode; | |
1818 | ||
1819 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
1820 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
1821 | ||
1822 | if (copy_to_user(arg, &di, sizeof(di))) | |
1823 | err = -EFAULT; | |
1824 | ||
1825 | hci_dev_put(hdev); | |
1826 | ||
1827 | return err; | |
1828 | } | |
1829 | ||
1830 | /* ---- Interface to HCI drivers ---- */ | |
1831 | ||
611b30f7 MH |
1832 | static int hci_rfkill_set_block(void *data, bool blocked) |
1833 | { | |
1834 | struct hci_dev *hdev = data; | |
1835 | ||
1836 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
1837 | ||
0736cfa8 MH |
1838 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
1839 | return -EBUSY; | |
1840 | ||
5e130367 JH |
1841 | if (blocked) { |
1842 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
bf543036 JH |
1843 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) |
1844 | hci_dev_do_close(hdev); | |
5e130367 JH |
1845 | } else { |
1846 | clear_bit(HCI_RFKILLED, &hdev->dev_flags); | |
1025c04c | 1847 | } |
611b30f7 MH |
1848 | |
1849 | return 0; | |
1850 | } | |
1851 | ||
1852 | static const struct rfkill_ops hci_rfkill_ops = { | |
1853 | .set_block = hci_rfkill_set_block, | |
1854 | }; | |
1855 | ||
ab81cbf9 JH |
1856 | static void hci_power_on(struct work_struct *work) |
1857 | { | |
1858 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 1859 | int err; |
ab81cbf9 JH |
1860 | |
1861 | BT_DBG("%s", hdev->name); | |
1862 | ||
cbed0ca1 | 1863 | err = hci_dev_do_open(hdev); |
96570ffc JH |
1864 | if (err < 0) { |
1865 | mgmt_set_powered_failed(hdev, err); | |
ab81cbf9 | 1866 | return; |
96570ffc | 1867 | } |
ab81cbf9 | 1868 | |
a5c8f270 MH |
1869 | /* During the HCI setup phase, a few error conditions are |
1870 | * ignored and they need to be checked now. If they are still | |
1871 | * valid, it is important to turn the device back off. | |
1872 | */ | |
1873 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags) || | |
1874 | (hdev->dev_type == HCI_BREDR && | |
1875 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
1876 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
bf543036 JH |
1877 | clear_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
1878 | hci_dev_do_close(hdev); | |
1879 | } else if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { | |
19202573 JH |
1880 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
1881 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 1882 | } |
ab81cbf9 | 1883 | |
a8b2d5c2 | 1884 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
744cf19e | 1885 | mgmt_index_added(hdev); |
ab81cbf9 JH |
1886 | } |
1887 | ||
1888 | static void hci_power_off(struct work_struct *work) | |
1889 | { | |
3243553f | 1890 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 1891 | power_off.work); |
ab81cbf9 JH |
1892 | |
1893 | BT_DBG("%s", hdev->name); | |
1894 | ||
8ee56540 | 1895 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
1896 | } |
1897 | ||
16ab91ab JH |
1898 | static void hci_discov_off(struct work_struct *work) |
1899 | { | |
1900 | struct hci_dev *hdev; | |
16ab91ab JH |
1901 | |
1902 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
1903 | ||
1904 | BT_DBG("%s", hdev->name); | |
1905 | ||
d1967ff8 | 1906 | mgmt_discoverable_timeout(hdev); |
16ab91ab JH |
1907 | } |
1908 | ||
2aeb9a1a JH |
1909 | int hci_uuids_clear(struct hci_dev *hdev) |
1910 | { | |
4821002c | 1911 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 1912 | |
4821002c JH |
1913 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
1914 | list_del(&uuid->list); | |
2aeb9a1a JH |
1915 | kfree(uuid); |
1916 | } | |
1917 | ||
1918 | return 0; | |
1919 | } | |
1920 | ||
55ed8ca1 JH |
1921 | int hci_link_keys_clear(struct hci_dev *hdev) |
1922 | { | |
1923 | struct list_head *p, *n; | |
1924 | ||
1925 | list_for_each_safe(p, n, &hdev->link_keys) { | |
1926 | struct link_key *key; | |
1927 | ||
1928 | key = list_entry(p, struct link_key, list); | |
1929 | ||
1930 | list_del(p); | |
1931 | kfree(key); | |
1932 | } | |
1933 | ||
1934 | return 0; | |
1935 | } | |
1936 | ||
b899efaf VCG |
1937 | int hci_smp_ltks_clear(struct hci_dev *hdev) |
1938 | { | |
1939 | struct smp_ltk *k, *tmp; | |
1940 | ||
1941 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
1942 | list_del(&k->list); | |
1943 | kfree(k); | |
1944 | } | |
1945 | ||
1946 | return 0; | |
1947 | } | |
1948 | ||
55ed8ca1 JH |
1949 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
1950 | { | |
8035ded4 | 1951 | struct link_key *k; |
55ed8ca1 | 1952 | |
8035ded4 | 1953 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
1954 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
1955 | return k; | |
55ed8ca1 JH |
1956 | |
1957 | return NULL; | |
1958 | } | |
1959 | ||
745c0ce3 | 1960 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 1961 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
1962 | { |
1963 | /* Legacy key */ | |
1964 | if (key_type < 0x03) | |
745c0ce3 | 1965 | return true; |
d25e28ab JH |
1966 | |
1967 | /* Debug keys are insecure so don't store them persistently */ | |
1968 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 1969 | return false; |
d25e28ab JH |
1970 | |
1971 | /* Changed combination key and there's no previous one */ | |
1972 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 1973 | return false; |
d25e28ab JH |
1974 | |
1975 | /* Security mode 3 case */ | |
1976 | if (!conn) | |
745c0ce3 | 1977 | return true; |
d25e28ab JH |
1978 | |
1979 | /* Neither local nor remote side had no-bonding as requirement */ | |
1980 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 1981 | return true; |
d25e28ab JH |
1982 | |
1983 | /* Local side had dedicated bonding as requirement */ | |
1984 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 1985 | return true; |
d25e28ab JH |
1986 | |
1987 | /* Remote side had dedicated bonding as requirement */ | |
1988 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 1989 | return true; |
d25e28ab JH |
1990 | |
1991 | /* If none of the above criteria match, then don't store the key | |
1992 | * persistently */ | |
745c0ce3 | 1993 | return false; |
d25e28ab JH |
1994 | } |
1995 | ||
c9839a11 | 1996 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) |
75d262c2 | 1997 | { |
c9839a11 | 1998 | struct smp_ltk *k; |
75d262c2 | 1999 | |
c9839a11 VCG |
2000 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
2001 | if (k->ediv != ediv || | |
a8c5fb1a | 2002 | memcmp(rand, k->rand, sizeof(k->rand))) |
75d262c2 VCG |
2003 | continue; |
2004 | ||
c9839a11 | 2005 | return k; |
75d262c2 VCG |
2006 | } |
2007 | ||
2008 | return NULL; | |
2009 | } | |
75d262c2 | 2010 | |
c9839a11 | 2011 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
04124681 | 2012 | u8 addr_type) |
75d262c2 | 2013 | { |
c9839a11 | 2014 | struct smp_ltk *k; |
75d262c2 | 2015 | |
c9839a11 VCG |
2016 | list_for_each_entry(k, &hdev->long_term_keys, list) |
2017 | if (addr_type == k->bdaddr_type && | |
a8c5fb1a | 2018 | bacmp(bdaddr, &k->bdaddr) == 0) |
75d262c2 VCG |
2019 | return k; |
2020 | ||
2021 | return NULL; | |
2022 | } | |
75d262c2 | 2023 | |
d25e28ab | 2024 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
04124681 | 2025 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
55ed8ca1 JH |
2026 | { |
2027 | struct link_key *key, *old_key; | |
745c0ce3 VA |
2028 | u8 old_key_type; |
2029 | bool persistent; | |
55ed8ca1 JH |
2030 | |
2031 | old_key = hci_find_link_key(hdev, bdaddr); | |
2032 | if (old_key) { | |
2033 | old_key_type = old_key->type; | |
2034 | key = old_key; | |
2035 | } else { | |
12adcf3a | 2036 | old_key_type = conn ? conn->key_type : 0xff; |
55ed8ca1 JH |
2037 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
2038 | if (!key) | |
2039 | return -ENOMEM; | |
2040 | list_add(&key->list, &hdev->link_keys); | |
2041 | } | |
2042 | ||
6ed93dc6 | 2043 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 2044 | |
d25e28ab JH |
2045 | /* Some buggy controller combinations generate a changed |
2046 | * combination key for legacy pairing even when there's no | |
2047 | * previous key */ | |
2048 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 2049 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 2050 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
2051 | if (conn) |
2052 | conn->key_type = type; | |
2053 | } | |
d25e28ab | 2054 | |
55ed8ca1 | 2055 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 2056 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
2057 | key->pin_len = pin_len; |
2058 | ||
b6020ba0 | 2059 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 2060 | key->type = old_key_type; |
4748fed2 JH |
2061 | else |
2062 | key->type = type; | |
2063 | ||
4df378a1 JH |
2064 | if (!new_key) |
2065 | return 0; | |
2066 | ||
2067 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
2068 | ||
744cf19e | 2069 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 | 2070 | |
6ec5bcad VA |
2071 | if (conn) |
2072 | conn->flush_key = !persistent; | |
55ed8ca1 JH |
2073 | |
2074 | return 0; | |
2075 | } | |
2076 | ||
c9839a11 | 2077 | int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, |
9a006657 | 2078 | int new_key, u8 authenticated, u8 tk[16], u8 enc_size, __le16 |
04124681 | 2079 | ediv, u8 rand[8]) |
75d262c2 | 2080 | { |
c9839a11 | 2081 | struct smp_ltk *key, *old_key; |
75d262c2 | 2082 | |
c9839a11 VCG |
2083 | if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) |
2084 | return 0; | |
75d262c2 | 2085 | |
c9839a11 VCG |
2086 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); |
2087 | if (old_key) | |
75d262c2 | 2088 | key = old_key; |
c9839a11 VCG |
2089 | else { |
2090 | key = kzalloc(sizeof(*key), GFP_ATOMIC); | |
75d262c2 VCG |
2091 | if (!key) |
2092 | return -ENOMEM; | |
c9839a11 | 2093 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
2094 | } |
2095 | ||
75d262c2 | 2096 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
2097 | key->bdaddr_type = addr_type; |
2098 | memcpy(key->val, tk, sizeof(key->val)); | |
2099 | key->authenticated = authenticated; | |
2100 | key->ediv = ediv; | |
2101 | key->enc_size = enc_size; | |
2102 | key->type = type; | |
2103 | memcpy(key->rand, rand, sizeof(key->rand)); | |
75d262c2 | 2104 | |
c9839a11 VCG |
2105 | if (!new_key) |
2106 | return 0; | |
75d262c2 | 2107 | |
261cc5aa VCG |
2108 | if (type & HCI_SMP_LTK) |
2109 | mgmt_new_ltk(hdev, key, 1); | |
2110 | ||
75d262c2 VCG |
2111 | return 0; |
2112 | } | |
2113 | ||
55ed8ca1 JH |
2114 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2115 | { | |
2116 | struct link_key *key; | |
2117 | ||
2118 | key = hci_find_link_key(hdev, bdaddr); | |
2119 | if (!key) | |
2120 | return -ENOENT; | |
2121 | ||
6ed93dc6 | 2122 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 JH |
2123 | |
2124 | list_del(&key->list); | |
2125 | kfree(key); | |
2126 | ||
2127 | return 0; | |
2128 | } | |
2129 | ||
b899efaf VCG |
2130 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2131 | { | |
2132 | struct smp_ltk *k, *tmp; | |
2133 | ||
2134 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
2135 | if (bacmp(bdaddr, &k->bdaddr)) | |
2136 | continue; | |
2137 | ||
6ed93dc6 | 2138 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf VCG |
2139 | |
2140 | list_del(&k->list); | |
2141 | kfree(k); | |
2142 | } | |
2143 | ||
2144 | return 0; | |
2145 | } | |
2146 | ||
6bd32326 | 2147 | /* HCI command timer function */ |
bda4f23a | 2148 | static void hci_cmd_timeout(unsigned long arg) |
6bd32326 VT |
2149 | { |
2150 | struct hci_dev *hdev = (void *) arg; | |
2151 | ||
bda4f23a AE |
2152 | if (hdev->sent_cmd) { |
2153 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
2154 | u16 opcode = __le16_to_cpu(sent->opcode); | |
2155 | ||
2156 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
2157 | } else { | |
2158 | BT_ERR("%s command tx timeout", hdev->name); | |
2159 | } | |
2160 | ||
6bd32326 | 2161 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 2162 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
2163 | } |
2164 | ||
2763eda6 | 2165 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 2166 | bdaddr_t *bdaddr) |
2763eda6 SJ |
2167 | { |
2168 | struct oob_data *data; | |
2169 | ||
2170 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
2171 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
2172 | return data; | |
2173 | ||
2174 | return NULL; | |
2175 | } | |
2176 | ||
2177 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
2178 | { | |
2179 | struct oob_data *data; | |
2180 | ||
2181 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
2182 | if (!data) | |
2183 | return -ENOENT; | |
2184 | ||
6ed93dc6 | 2185 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2186 | |
2187 | list_del(&data->list); | |
2188 | kfree(data); | |
2189 | ||
2190 | return 0; | |
2191 | } | |
2192 | ||
2193 | int hci_remote_oob_data_clear(struct hci_dev *hdev) | |
2194 | { | |
2195 | struct oob_data *data, *n; | |
2196 | ||
2197 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2198 | list_del(&data->list); | |
2199 | kfree(data); | |
2200 | } | |
2201 | ||
2202 | return 0; | |
2203 | } | |
2204 | ||
2205 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, | |
04124681 | 2206 | u8 *randomizer) |
2763eda6 SJ |
2207 | { |
2208 | struct oob_data *data; | |
2209 | ||
2210 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
2211 | ||
2212 | if (!data) { | |
2213 | data = kmalloc(sizeof(*data), GFP_ATOMIC); | |
2214 | if (!data) | |
2215 | return -ENOMEM; | |
2216 | ||
2217 | bacpy(&data->bdaddr, bdaddr); | |
2218 | list_add(&data->list, &hdev->remote_oob_data); | |
2219 | } | |
2220 | ||
2221 | memcpy(data->hash, hash, sizeof(data->hash)); | |
2222 | memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); | |
2223 | ||
6ed93dc6 | 2224 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2225 | |
2226 | return 0; | |
2227 | } | |
2228 | ||
b9ee0a78 MH |
2229 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, |
2230 | bdaddr_t *bdaddr, u8 type) | |
b2a66aad | 2231 | { |
8035ded4 | 2232 | struct bdaddr_list *b; |
b2a66aad | 2233 | |
b9ee0a78 MH |
2234 | list_for_each_entry(b, &hdev->blacklist, list) { |
2235 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) | |
b2a66aad | 2236 | return b; |
b9ee0a78 | 2237 | } |
b2a66aad AJ |
2238 | |
2239 | return NULL; | |
2240 | } | |
2241 | ||
2242 | int hci_blacklist_clear(struct hci_dev *hdev) | |
2243 | { | |
2244 | struct list_head *p, *n; | |
2245 | ||
2246 | list_for_each_safe(p, n, &hdev->blacklist) { | |
b9ee0a78 | 2247 | struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list); |
b2a66aad AJ |
2248 | |
2249 | list_del(p); | |
2250 | kfree(b); | |
2251 | } | |
2252 | ||
2253 | return 0; | |
2254 | } | |
2255 | ||
88c1fe4b | 2256 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2257 | { |
2258 | struct bdaddr_list *entry; | |
b2a66aad | 2259 | |
b9ee0a78 | 2260 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2261 | return -EBADF; |
2262 | ||
b9ee0a78 | 2263 | if (hci_blacklist_lookup(hdev, bdaddr, type)) |
5e762444 | 2264 | return -EEXIST; |
b2a66aad AJ |
2265 | |
2266 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
2267 | if (!entry) |
2268 | return -ENOMEM; | |
b2a66aad AJ |
2269 | |
2270 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2271 | entry->bdaddr_type = type; |
b2a66aad AJ |
2272 | |
2273 | list_add(&entry->list, &hdev->blacklist); | |
2274 | ||
88c1fe4b | 2275 | return mgmt_device_blocked(hdev, bdaddr, type); |
b2a66aad AJ |
2276 | } |
2277 | ||
88c1fe4b | 2278 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2279 | { |
2280 | struct bdaddr_list *entry; | |
b2a66aad | 2281 | |
b9ee0a78 | 2282 | if (!bacmp(bdaddr, BDADDR_ANY)) |
5e762444 | 2283 | return hci_blacklist_clear(hdev); |
b2a66aad | 2284 | |
b9ee0a78 | 2285 | entry = hci_blacklist_lookup(hdev, bdaddr, type); |
1ec918ce | 2286 | if (!entry) |
5e762444 | 2287 | return -ENOENT; |
b2a66aad AJ |
2288 | |
2289 | list_del(&entry->list); | |
2290 | kfree(entry); | |
2291 | ||
88c1fe4b | 2292 | return mgmt_device_unblocked(hdev, bdaddr, type); |
b2a66aad AJ |
2293 | } |
2294 | ||
4c87eaab | 2295 | static void inquiry_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 2296 | { |
4c87eaab AG |
2297 | if (status) { |
2298 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 2299 | |
4c87eaab AG |
2300 | hci_dev_lock(hdev); |
2301 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2302 | hci_dev_unlock(hdev); | |
2303 | return; | |
2304 | } | |
7ba8b4be AG |
2305 | } |
2306 | ||
4c87eaab | 2307 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 2308 | { |
4c87eaab AG |
2309 | /* General inquiry access code (GIAC) */ |
2310 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
2311 | struct hci_request req; | |
2312 | struct hci_cp_inquiry cp; | |
7ba8b4be AG |
2313 | int err; |
2314 | ||
4c87eaab AG |
2315 | if (status) { |
2316 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
2317 | return; | |
2318 | } | |
7ba8b4be | 2319 | |
4c87eaab AG |
2320 | switch (hdev->discovery.type) { |
2321 | case DISCOV_TYPE_LE: | |
2322 | hci_dev_lock(hdev); | |
2323 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2324 | hci_dev_unlock(hdev); | |
2325 | break; | |
7ba8b4be | 2326 | |
4c87eaab AG |
2327 | case DISCOV_TYPE_INTERLEAVED: |
2328 | hci_req_init(&req, hdev); | |
7ba8b4be | 2329 | |
4c87eaab AG |
2330 | memset(&cp, 0, sizeof(cp)); |
2331 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
2332 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
2333 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
7ba8b4be | 2334 | |
4c87eaab | 2335 | hci_dev_lock(hdev); |
7dbfac1d | 2336 | |
4c87eaab | 2337 | hci_inquiry_cache_flush(hdev); |
7dbfac1d | 2338 | |
4c87eaab AG |
2339 | err = hci_req_run(&req, inquiry_complete); |
2340 | if (err) { | |
2341 | BT_ERR("Inquiry request failed: err %d", err); | |
2342 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
2343 | } | |
7dbfac1d | 2344 | |
4c87eaab AG |
2345 | hci_dev_unlock(hdev); |
2346 | break; | |
7dbfac1d | 2347 | } |
7dbfac1d AG |
2348 | } |
2349 | ||
7ba8b4be AG |
2350 | static void le_scan_disable_work(struct work_struct *work) |
2351 | { | |
2352 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 2353 | le_scan_disable.work); |
7ba8b4be | 2354 | struct hci_cp_le_set_scan_enable cp; |
4c87eaab AG |
2355 | struct hci_request req; |
2356 | int err; | |
7ba8b4be AG |
2357 | |
2358 | BT_DBG("%s", hdev->name); | |
2359 | ||
4c87eaab | 2360 | hci_req_init(&req, hdev); |
28b75a89 | 2361 | |
7ba8b4be | 2362 | memset(&cp, 0, sizeof(cp)); |
4c87eaab AG |
2363 | cp.enable = LE_SCAN_DISABLE; |
2364 | hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
28b75a89 | 2365 | |
4c87eaab AG |
2366 | err = hci_req_run(&req, le_scan_disable_work_complete); |
2367 | if (err) | |
2368 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
2369 | } |
2370 | ||
9be0dab7 DH |
2371 | /* Alloc HCI device */ |
2372 | struct hci_dev *hci_alloc_dev(void) | |
2373 | { | |
2374 | struct hci_dev *hdev; | |
2375 | ||
2376 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); | |
2377 | if (!hdev) | |
2378 | return NULL; | |
2379 | ||
b1b813d4 DH |
2380 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
2381 | hdev->esco_type = (ESCO_HV1); | |
2382 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
2383 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
2384 | hdev->io_capability = 0x03; /* No Input No Output */ | |
bbaf444a JH |
2385 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
2386 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 2387 | |
b1b813d4 DH |
2388 | hdev->sniff_max_interval = 800; |
2389 | hdev->sniff_min_interval = 80; | |
2390 | ||
bef64738 MH |
2391 | hdev->le_scan_interval = 0x0060; |
2392 | hdev->le_scan_window = 0x0030; | |
2393 | ||
b1b813d4 DH |
2394 | mutex_init(&hdev->lock); |
2395 | mutex_init(&hdev->req_lock); | |
2396 | ||
2397 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
2398 | INIT_LIST_HEAD(&hdev->blacklist); | |
2399 | INIT_LIST_HEAD(&hdev->uuids); | |
2400 | INIT_LIST_HEAD(&hdev->link_keys); | |
2401 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
2402 | INIT_LIST_HEAD(&hdev->remote_oob_data); | |
6b536b5e | 2403 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
2404 | |
2405 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
2406 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
2407 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
2408 | INIT_WORK(&hdev->power_on, hci_power_on); | |
b1b813d4 | 2409 | |
b1b813d4 DH |
2410 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
2411 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
2412 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
2413 | ||
b1b813d4 DH |
2414 | skb_queue_head_init(&hdev->rx_q); |
2415 | skb_queue_head_init(&hdev->cmd_q); | |
2416 | skb_queue_head_init(&hdev->raw_q); | |
2417 | ||
2418 | init_waitqueue_head(&hdev->req_wait_q); | |
2419 | ||
bda4f23a | 2420 | setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev); |
b1b813d4 | 2421 | |
b1b813d4 DH |
2422 | hci_init_sysfs(hdev); |
2423 | discovery_init(hdev); | |
9be0dab7 DH |
2424 | |
2425 | return hdev; | |
2426 | } | |
2427 | EXPORT_SYMBOL(hci_alloc_dev); | |
2428 | ||
2429 | /* Free HCI device */ | |
2430 | void hci_free_dev(struct hci_dev *hdev) | |
2431 | { | |
9be0dab7 DH |
2432 | /* will free via device release */ |
2433 | put_device(&hdev->dev); | |
2434 | } | |
2435 | EXPORT_SYMBOL(hci_free_dev); | |
2436 | ||
1da177e4 LT |
2437 | /* Register HCI device */ |
2438 | int hci_register_dev(struct hci_dev *hdev) | |
2439 | { | |
b1b813d4 | 2440 | int id, error; |
1da177e4 | 2441 | |
010666a1 | 2442 | if (!hdev->open || !hdev->close) |
1da177e4 LT |
2443 | return -EINVAL; |
2444 | ||
08add513 MM |
2445 | /* Do not allow HCI_AMP devices to register at index 0, |
2446 | * so the index can be used as the AMP controller ID. | |
2447 | */ | |
3df92b31 SL |
2448 | switch (hdev->dev_type) { |
2449 | case HCI_BREDR: | |
2450 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
2451 | break; | |
2452 | case HCI_AMP: | |
2453 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
2454 | break; | |
2455 | default: | |
2456 | return -EINVAL; | |
1da177e4 | 2457 | } |
8e87d142 | 2458 | |
3df92b31 SL |
2459 | if (id < 0) |
2460 | return id; | |
2461 | ||
1da177e4 LT |
2462 | sprintf(hdev->name, "hci%d", id); |
2463 | hdev->id = id; | |
2d8b3a11 AE |
2464 | |
2465 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
2466 | ||
d8537548 KC |
2467 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
2468 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
2469 | if (!hdev->workqueue) { |
2470 | error = -ENOMEM; | |
2471 | goto err; | |
2472 | } | |
f48fd9c8 | 2473 | |
d8537548 KC |
2474 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
2475 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
2476 | if (!hdev->req_workqueue) { |
2477 | destroy_workqueue(hdev->workqueue); | |
2478 | error = -ENOMEM; | |
2479 | goto err; | |
2480 | } | |
2481 | ||
33ca954d DH |
2482 | error = hci_add_sysfs(hdev); |
2483 | if (error < 0) | |
2484 | goto err_wqueue; | |
1da177e4 | 2485 | |
611b30f7 | 2486 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
2487 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
2488 | hdev); | |
611b30f7 MH |
2489 | if (hdev->rfkill) { |
2490 | if (rfkill_register(hdev->rfkill) < 0) { | |
2491 | rfkill_destroy(hdev->rfkill); | |
2492 | hdev->rfkill = NULL; | |
2493 | } | |
2494 | } | |
2495 | ||
5e130367 JH |
2496 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
2497 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
2498 | ||
a8b2d5c2 | 2499 | set_bit(HCI_SETUP, &hdev->dev_flags); |
004b0258 | 2500 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
ce2be9ac | 2501 | |
01cd3404 | 2502 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
2503 | /* Assume BR/EDR support until proven otherwise (such as |
2504 | * through reading supported features during init. | |
2505 | */ | |
2506 | set_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
2507 | } | |
ce2be9ac | 2508 | |
fcee3377 GP |
2509 | write_lock(&hci_dev_list_lock); |
2510 | list_add(&hdev->list, &hci_dev_list); | |
2511 | write_unlock(&hci_dev_list_lock); | |
2512 | ||
1da177e4 | 2513 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 2514 | hci_dev_hold(hdev); |
1da177e4 | 2515 | |
19202573 | 2516 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 2517 | |
1da177e4 | 2518 | return id; |
f48fd9c8 | 2519 | |
33ca954d DH |
2520 | err_wqueue: |
2521 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 2522 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 2523 | err: |
3df92b31 | 2524 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 2525 | |
33ca954d | 2526 | return error; |
1da177e4 LT |
2527 | } |
2528 | EXPORT_SYMBOL(hci_register_dev); | |
2529 | ||
2530 | /* Unregister HCI device */ | |
59735631 | 2531 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 2532 | { |
3df92b31 | 2533 | int i, id; |
ef222013 | 2534 | |
c13854ce | 2535 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 2536 | |
94324962 JH |
2537 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
2538 | ||
3df92b31 SL |
2539 | id = hdev->id; |
2540 | ||
f20d09d5 | 2541 | write_lock(&hci_dev_list_lock); |
1da177e4 | 2542 | list_del(&hdev->list); |
f20d09d5 | 2543 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2544 | |
2545 | hci_dev_do_close(hdev); | |
2546 | ||
cd4c5391 | 2547 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
2548 | kfree_skb(hdev->reassembly[i]); |
2549 | ||
b9b5ef18 GP |
2550 | cancel_work_sync(&hdev->power_on); |
2551 | ||
ab81cbf9 | 2552 | if (!test_bit(HCI_INIT, &hdev->flags) && |
a8c5fb1a | 2553 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 2554 | hci_dev_lock(hdev); |
744cf19e | 2555 | mgmt_index_removed(hdev); |
09fd0de5 | 2556 | hci_dev_unlock(hdev); |
56e5cb86 | 2557 | } |
ab81cbf9 | 2558 | |
2e58ef3e JH |
2559 | /* mgmt_index_removed should take care of emptying the |
2560 | * pending list */ | |
2561 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
2562 | ||
1da177e4 LT |
2563 | hci_notify(hdev, HCI_DEV_UNREG); |
2564 | ||
611b30f7 MH |
2565 | if (hdev->rfkill) { |
2566 | rfkill_unregister(hdev->rfkill); | |
2567 | rfkill_destroy(hdev->rfkill); | |
2568 | } | |
2569 | ||
ce242970 | 2570 | hci_del_sysfs(hdev); |
147e2d59 | 2571 | |
f48fd9c8 | 2572 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 2573 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 2574 | |
09fd0de5 | 2575 | hci_dev_lock(hdev); |
e2e0cacb | 2576 | hci_blacklist_clear(hdev); |
2aeb9a1a | 2577 | hci_uuids_clear(hdev); |
55ed8ca1 | 2578 | hci_link_keys_clear(hdev); |
b899efaf | 2579 | hci_smp_ltks_clear(hdev); |
2763eda6 | 2580 | hci_remote_oob_data_clear(hdev); |
09fd0de5 | 2581 | hci_dev_unlock(hdev); |
e2e0cacb | 2582 | |
dc946bd8 | 2583 | hci_dev_put(hdev); |
3df92b31 SL |
2584 | |
2585 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
2586 | } |
2587 | EXPORT_SYMBOL(hci_unregister_dev); | |
2588 | ||
2589 | /* Suspend HCI device */ | |
2590 | int hci_suspend_dev(struct hci_dev *hdev) | |
2591 | { | |
2592 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
2593 | return 0; | |
2594 | } | |
2595 | EXPORT_SYMBOL(hci_suspend_dev); | |
2596 | ||
2597 | /* Resume HCI device */ | |
2598 | int hci_resume_dev(struct hci_dev *hdev) | |
2599 | { | |
2600 | hci_notify(hdev, HCI_DEV_RESUME); | |
2601 | return 0; | |
2602 | } | |
2603 | EXPORT_SYMBOL(hci_resume_dev); | |
2604 | ||
76bca880 | 2605 | /* Receive frame from HCI drivers */ |
e1a26170 | 2606 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 2607 | { |
76bca880 | 2608 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 2609 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
2610 | kfree_skb(skb); |
2611 | return -ENXIO; | |
2612 | } | |
2613 | ||
d82603c6 | 2614 | /* Incoming skb */ |
76bca880 MH |
2615 | bt_cb(skb)->incoming = 1; |
2616 | ||
2617 | /* Time stamp */ | |
2618 | __net_timestamp(skb); | |
2619 | ||
76bca880 | 2620 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 2621 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 2622 | |
76bca880 MH |
2623 | return 0; |
2624 | } | |
2625 | EXPORT_SYMBOL(hci_recv_frame); | |
2626 | ||
33e882a5 | 2627 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 2628 | int count, __u8 index) |
33e882a5 SS |
2629 | { |
2630 | int len = 0; | |
2631 | int hlen = 0; | |
2632 | int remain = count; | |
2633 | struct sk_buff *skb; | |
2634 | struct bt_skb_cb *scb; | |
2635 | ||
2636 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 2637 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
2638 | return -EILSEQ; |
2639 | ||
2640 | skb = hdev->reassembly[index]; | |
2641 | ||
2642 | if (!skb) { | |
2643 | switch (type) { | |
2644 | case HCI_ACLDATA_PKT: | |
2645 | len = HCI_MAX_FRAME_SIZE; | |
2646 | hlen = HCI_ACL_HDR_SIZE; | |
2647 | break; | |
2648 | case HCI_EVENT_PKT: | |
2649 | len = HCI_MAX_EVENT_SIZE; | |
2650 | hlen = HCI_EVENT_HDR_SIZE; | |
2651 | break; | |
2652 | case HCI_SCODATA_PKT: | |
2653 | len = HCI_MAX_SCO_SIZE; | |
2654 | hlen = HCI_SCO_HDR_SIZE; | |
2655 | break; | |
2656 | } | |
2657 | ||
1e429f38 | 2658 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
2659 | if (!skb) |
2660 | return -ENOMEM; | |
2661 | ||
2662 | scb = (void *) skb->cb; | |
2663 | scb->expect = hlen; | |
2664 | scb->pkt_type = type; | |
2665 | ||
33e882a5 SS |
2666 | hdev->reassembly[index] = skb; |
2667 | } | |
2668 | ||
2669 | while (count) { | |
2670 | scb = (void *) skb->cb; | |
89bb46d0 | 2671 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
2672 | |
2673 | memcpy(skb_put(skb, len), data, len); | |
2674 | ||
2675 | count -= len; | |
2676 | data += len; | |
2677 | scb->expect -= len; | |
2678 | remain = count; | |
2679 | ||
2680 | switch (type) { | |
2681 | case HCI_EVENT_PKT: | |
2682 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
2683 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
2684 | scb->expect = h->plen; | |
2685 | ||
2686 | if (skb_tailroom(skb) < scb->expect) { | |
2687 | kfree_skb(skb); | |
2688 | hdev->reassembly[index] = NULL; | |
2689 | return -ENOMEM; | |
2690 | } | |
2691 | } | |
2692 | break; | |
2693 | ||
2694 | case HCI_ACLDATA_PKT: | |
2695 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
2696 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
2697 | scb->expect = __le16_to_cpu(h->dlen); | |
2698 | ||
2699 | if (skb_tailroom(skb) < scb->expect) { | |
2700 | kfree_skb(skb); | |
2701 | hdev->reassembly[index] = NULL; | |
2702 | return -ENOMEM; | |
2703 | } | |
2704 | } | |
2705 | break; | |
2706 | ||
2707 | case HCI_SCODATA_PKT: | |
2708 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
2709 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
2710 | scb->expect = h->dlen; | |
2711 | ||
2712 | if (skb_tailroom(skb) < scb->expect) { | |
2713 | kfree_skb(skb); | |
2714 | hdev->reassembly[index] = NULL; | |
2715 | return -ENOMEM; | |
2716 | } | |
2717 | } | |
2718 | break; | |
2719 | } | |
2720 | ||
2721 | if (scb->expect == 0) { | |
2722 | /* Complete frame */ | |
2723 | ||
2724 | bt_cb(skb)->pkt_type = type; | |
e1a26170 | 2725 | hci_recv_frame(hdev, skb); |
33e882a5 SS |
2726 | |
2727 | hdev->reassembly[index] = NULL; | |
2728 | return remain; | |
2729 | } | |
2730 | } | |
2731 | ||
2732 | return remain; | |
2733 | } | |
2734 | ||
ef222013 MH |
2735 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
2736 | { | |
f39a3c06 SS |
2737 | int rem = 0; |
2738 | ||
ef222013 MH |
2739 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
2740 | return -EILSEQ; | |
2741 | ||
da5f6c37 | 2742 | while (count) { |
1e429f38 | 2743 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
2744 | if (rem < 0) |
2745 | return rem; | |
ef222013 | 2746 | |
f39a3c06 SS |
2747 | data += (count - rem); |
2748 | count = rem; | |
f81c6224 | 2749 | } |
ef222013 | 2750 | |
f39a3c06 | 2751 | return rem; |
ef222013 MH |
2752 | } |
2753 | EXPORT_SYMBOL(hci_recv_fragment); | |
2754 | ||
99811510 SS |
2755 | #define STREAM_REASSEMBLY 0 |
2756 | ||
2757 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
2758 | { | |
2759 | int type; | |
2760 | int rem = 0; | |
2761 | ||
da5f6c37 | 2762 | while (count) { |
99811510 SS |
2763 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
2764 | ||
2765 | if (!skb) { | |
2766 | struct { char type; } *pkt; | |
2767 | ||
2768 | /* Start of the frame */ | |
2769 | pkt = data; | |
2770 | type = pkt->type; | |
2771 | ||
2772 | data++; | |
2773 | count--; | |
2774 | } else | |
2775 | type = bt_cb(skb)->pkt_type; | |
2776 | ||
1e429f38 | 2777 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 2778 | STREAM_REASSEMBLY); |
99811510 SS |
2779 | if (rem < 0) |
2780 | return rem; | |
2781 | ||
2782 | data += (count - rem); | |
2783 | count = rem; | |
f81c6224 | 2784 | } |
99811510 SS |
2785 | |
2786 | return rem; | |
2787 | } | |
2788 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
2789 | ||
1da177e4 LT |
2790 | /* ---- Interface to upper protocols ---- */ |
2791 | ||
1da177e4 LT |
2792 | int hci_register_cb(struct hci_cb *cb) |
2793 | { | |
2794 | BT_DBG("%p name %s", cb, cb->name); | |
2795 | ||
f20d09d5 | 2796 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2797 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 2798 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2799 | |
2800 | return 0; | |
2801 | } | |
2802 | EXPORT_SYMBOL(hci_register_cb); | |
2803 | ||
2804 | int hci_unregister_cb(struct hci_cb *cb) | |
2805 | { | |
2806 | BT_DBG("%p name %s", cb, cb->name); | |
2807 | ||
f20d09d5 | 2808 | write_lock(&hci_cb_list_lock); |
1da177e4 | 2809 | list_del(&cb->list); |
f20d09d5 | 2810 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
2811 | |
2812 | return 0; | |
2813 | } | |
2814 | EXPORT_SYMBOL(hci_unregister_cb); | |
2815 | ||
51086991 | 2816 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 2817 | { |
0d48d939 | 2818 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 2819 | |
cd82e61c MH |
2820 | /* Time stamp */ |
2821 | __net_timestamp(skb); | |
1da177e4 | 2822 | |
cd82e61c MH |
2823 | /* Send copy to monitor */ |
2824 | hci_send_to_monitor(hdev, skb); | |
2825 | ||
2826 | if (atomic_read(&hdev->promisc)) { | |
2827 | /* Send copy to the sockets */ | |
470fe1b5 | 2828 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
2829 | } |
2830 | ||
2831 | /* Get rid of skb owner, prior to sending to the driver. */ | |
2832 | skb_orphan(skb); | |
2833 | ||
7bd8f09f | 2834 | if (hdev->send(hdev, skb) < 0) |
51086991 | 2835 | BT_ERR("%s sending frame failed", hdev->name); |
1da177e4 LT |
2836 | } |
2837 | ||
3119ae95 JH |
2838 | void hci_req_init(struct hci_request *req, struct hci_dev *hdev) |
2839 | { | |
2840 | skb_queue_head_init(&req->cmd_q); | |
2841 | req->hdev = hdev; | |
5d73e034 | 2842 | req->err = 0; |
3119ae95 JH |
2843 | } |
2844 | ||
2845 | int hci_req_run(struct hci_request *req, hci_req_complete_t complete) | |
2846 | { | |
2847 | struct hci_dev *hdev = req->hdev; | |
2848 | struct sk_buff *skb; | |
2849 | unsigned long flags; | |
2850 | ||
2851 | BT_DBG("length %u", skb_queue_len(&req->cmd_q)); | |
2852 | ||
5d73e034 AG |
2853 | /* If an error occured during request building, remove all HCI |
2854 | * commands queued on the HCI request queue. | |
2855 | */ | |
2856 | if (req->err) { | |
2857 | skb_queue_purge(&req->cmd_q); | |
2858 | return req->err; | |
2859 | } | |
2860 | ||
3119ae95 JH |
2861 | /* Do not allow empty requests */ |
2862 | if (skb_queue_empty(&req->cmd_q)) | |
382b0c39 | 2863 | return -ENODATA; |
3119ae95 JH |
2864 | |
2865 | skb = skb_peek_tail(&req->cmd_q); | |
2866 | bt_cb(skb)->req.complete = complete; | |
2867 | ||
2868 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
2869 | skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q); | |
2870 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
2871 | ||
2872 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
2873 | ||
2874 | return 0; | |
2875 | } | |
2876 | ||
1ca3a9d0 | 2877 | static struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, |
07dc93dd | 2878 | u32 plen, const void *param) |
1da177e4 LT |
2879 | { |
2880 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
2881 | struct hci_command_hdr *hdr; | |
2882 | struct sk_buff *skb; | |
2883 | ||
1da177e4 | 2884 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
1ca3a9d0 JH |
2885 | if (!skb) |
2886 | return NULL; | |
1da177e4 LT |
2887 | |
2888 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 2889 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
2890 | hdr->plen = plen; |
2891 | ||
2892 | if (plen) | |
2893 | memcpy(skb_put(skb, plen), param, plen); | |
2894 | ||
2895 | BT_DBG("skb len %d", skb->len); | |
2896 | ||
0d48d939 | 2897 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
c78ae283 | 2898 | |
1ca3a9d0 JH |
2899 | return skb; |
2900 | } | |
2901 | ||
2902 | /* Send HCI command */ | |
07dc93dd JH |
2903 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
2904 | const void *param) | |
1ca3a9d0 JH |
2905 | { |
2906 | struct sk_buff *skb; | |
2907 | ||
2908 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
2909 | ||
2910 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
2911 | if (!skb) { | |
2912 | BT_ERR("%s no memory for command", hdev->name); | |
2913 | return -ENOMEM; | |
2914 | } | |
2915 | ||
11714b3d JH |
2916 | /* Stand-alone HCI commands must be flaged as |
2917 | * single-command requests. | |
2918 | */ | |
2919 | bt_cb(skb)->req.start = true; | |
2920 | ||
1da177e4 | 2921 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 2922 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
2923 | |
2924 | return 0; | |
2925 | } | |
1da177e4 | 2926 | |
71c76a17 | 2927 | /* Queue a command to an asynchronous HCI request */ |
07dc93dd JH |
2928 | void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, |
2929 | const void *param, u8 event) | |
71c76a17 JH |
2930 | { |
2931 | struct hci_dev *hdev = req->hdev; | |
2932 | struct sk_buff *skb; | |
2933 | ||
2934 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
2935 | ||
34739c1e AG |
2936 | /* If an error occured during request building, there is no point in |
2937 | * queueing the HCI command. We can simply return. | |
2938 | */ | |
2939 | if (req->err) | |
2940 | return; | |
2941 | ||
71c76a17 JH |
2942 | skb = hci_prepare_cmd(hdev, opcode, plen, param); |
2943 | if (!skb) { | |
5d73e034 AG |
2944 | BT_ERR("%s no memory for command (opcode 0x%4.4x)", |
2945 | hdev->name, opcode); | |
2946 | req->err = -ENOMEM; | |
e348fe6b | 2947 | return; |
71c76a17 JH |
2948 | } |
2949 | ||
2950 | if (skb_queue_empty(&req->cmd_q)) | |
2951 | bt_cb(skb)->req.start = true; | |
2952 | ||
02350a72 JH |
2953 | bt_cb(skb)->req.event = event; |
2954 | ||
71c76a17 | 2955 | skb_queue_tail(&req->cmd_q, skb); |
71c76a17 JH |
2956 | } |
2957 | ||
07dc93dd JH |
2958 | void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, |
2959 | const void *param) | |
02350a72 JH |
2960 | { |
2961 | hci_req_add_ev(req, opcode, plen, param, 0); | |
2962 | } | |
2963 | ||
1da177e4 | 2964 | /* Get data from the previously sent command */ |
a9de9248 | 2965 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
2966 | { |
2967 | struct hci_command_hdr *hdr; | |
2968 | ||
2969 | if (!hdev->sent_cmd) | |
2970 | return NULL; | |
2971 | ||
2972 | hdr = (void *) hdev->sent_cmd->data; | |
2973 | ||
a9de9248 | 2974 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
2975 | return NULL; |
2976 | ||
f0e09510 | 2977 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
2978 | |
2979 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
2980 | } | |
2981 | ||
2982 | /* Send ACL data */ | |
2983 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
2984 | { | |
2985 | struct hci_acl_hdr *hdr; | |
2986 | int len = skb->len; | |
2987 | ||
badff6d0 ACM |
2988 | skb_push(skb, HCI_ACL_HDR_SIZE); |
2989 | skb_reset_transport_header(skb); | |
9c70220b | 2990 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
2991 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
2992 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
2993 | } |
2994 | ||
ee22be7e | 2995 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 2996 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 2997 | { |
ee22be7e | 2998 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
2999 | struct hci_dev *hdev = conn->hdev; |
3000 | struct sk_buff *list; | |
3001 | ||
087bfd99 GP |
3002 | skb->len = skb_headlen(skb); |
3003 | skb->data_len = 0; | |
3004 | ||
3005 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
3006 | |
3007 | switch (hdev->dev_type) { | |
3008 | case HCI_BREDR: | |
3009 | hci_add_acl_hdr(skb, conn->handle, flags); | |
3010 | break; | |
3011 | case HCI_AMP: | |
3012 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3013 | break; | |
3014 | default: | |
3015 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
3016 | return; | |
3017 | } | |
087bfd99 | 3018 | |
70f23020 AE |
3019 | list = skb_shinfo(skb)->frag_list; |
3020 | if (!list) { | |
1da177e4 LT |
3021 | /* Non fragmented */ |
3022 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3023 | ||
73d80deb | 3024 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3025 | } else { |
3026 | /* Fragmented */ | |
3027 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3028 | ||
3029 | skb_shinfo(skb)->frag_list = NULL; | |
3030 | ||
3031 | /* Queue all fragments atomically */ | |
af3e6359 | 3032 | spin_lock(&queue->lock); |
1da177e4 | 3033 | |
73d80deb | 3034 | __skb_queue_tail(queue, skb); |
e702112f AE |
3035 | |
3036 | flags &= ~ACL_START; | |
3037 | flags |= ACL_CONT; | |
1da177e4 LT |
3038 | do { |
3039 | skb = list; list = list->next; | |
8e87d142 | 3040 | |
0d48d939 | 3041 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 3042 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3043 | |
3044 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3045 | ||
73d80deb | 3046 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3047 | } while (list); |
3048 | ||
af3e6359 | 3049 | spin_unlock(&queue->lock); |
1da177e4 | 3050 | } |
73d80deb LAD |
3051 | } |
3052 | ||
3053 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3054 | { | |
ee22be7e | 3055 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3056 | |
f0e09510 | 3057 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3058 | |
ee22be7e | 3059 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3060 | |
3eff45ea | 3061 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3062 | } |
1da177e4 LT |
3063 | |
3064 | /* Send SCO data */ | |
0d861d8b | 3065 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3066 | { |
3067 | struct hci_dev *hdev = conn->hdev; | |
3068 | struct hci_sco_hdr hdr; | |
3069 | ||
3070 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3071 | ||
aca3192c | 3072 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3073 | hdr.dlen = skb->len; |
3074 | ||
badff6d0 ACM |
3075 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3076 | skb_reset_transport_header(skb); | |
9c70220b | 3077 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3078 | |
0d48d939 | 3079 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 3080 | |
1da177e4 | 3081 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3082 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3083 | } |
1da177e4 LT |
3084 | |
3085 | /* ---- HCI TX task (outgoing data) ---- */ | |
3086 | ||
3087 | /* HCI Connection scheduler */ | |
6039aa73 GP |
3088 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3089 | int *quote) | |
1da177e4 LT |
3090 | { |
3091 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3092 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3093 | unsigned int num = 0, min = ~0; |
1da177e4 | 3094 | |
8e87d142 | 3095 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3096 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3097 | |
3098 | rcu_read_lock(); | |
3099 | ||
3100 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3101 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3102 | continue; |
769be974 MH |
3103 | |
3104 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3105 | continue; | |
3106 | ||
1da177e4 LT |
3107 | num++; |
3108 | ||
3109 | if (c->sent < min) { | |
3110 | min = c->sent; | |
3111 | conn = c; | |
3112 | } | |
52087a79 LAD |
3113 | |
3114 | if (hci_conn_num(hdev, type) == num) | |
3115 | break; | |
1da177e4 LT |
3116 | } |
3117 | ||
bf4c6325 GP |
3118 | rcu_read_unlock(); |
3119 | ||
1da177e4 | 3120 | if (conn) { |
6ed58ec5 VT |
3121 | int cnt, q; |
3122 | ||
3123 | switch (conn->type) { | |
3124 | case ACL_LINK: | |
3125 | cnt = hdev->acl_cnt; | |
3126 | break; | |
3127 | case SCO_LINK: | |
3128 | case ESCO_LINK: | |
3129 | cnt = hdev->sco_cnt; | |
3130 | break; | |
3131 | case LE_LINK: | |
3132 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3133 | break; | |
3134 | default: | |
3135 | cnt = 0; | |
3136 | BT_ERR("Unknown link type"); | |
3137 | } | |
3138 | ||
3139 | q = cnt / num; | |
1da177e4 LT |
3140 | *quote = q ? q : 1; |
3141 | } else | |
3142 | *quote = 0; | |
3143 | ||
3144 | BT_DBG("conn %p quote %d", conn, *quote); | |
3145 | return conn; | |
3146 | } | |
3147 | ||
6039aa73 | 3148 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3149 | { |
3150 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3151 | struct hci_conn *c; |
1da177e4 | 3152 | |
bae1f5d9 | 3153 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 3154 | |
bf4c6325 GP |
3155 | rcu_read_lock(); |
3156 | ||
1da177e4 | 3157 | /* Kill stalled connections */ |
bf4c6325 | 3158 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3159 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
3160 | BT_ERR("%s killing stalled connection %pMR", |
3161 | hdev->name, &c->dst); | |
bed71748 | 3162 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3163 | } |
3164 | } | |
bf4c6325 GP |
3165 | |
3166 | rcu_read_unlock(); | |
1da177e4 LT |
3167 | } |
3168 | ||
6039aa73 GP |
3169 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3170 | int *quote) | |
1da177e4 | 3171 | { |
73d80deb LAD |
3172 | struct hci_conn_hash *h = &hdev->conn_hash; |
3173 | struct hci_chan *chan = NULL; | |
abc5de8f | 3174 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3175 | struct hci_conn *conn; |
73d80deb LAD |
3176 | int cnt, q, conn_num = 0; |
3177 | ||
3178 | BT_DBG("%s", hdev->name); | |
3179 | ||
bf4c6325 GP |
3180 | rcu_read_lock(); |
3181 | ||
3182 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3183 | struct hci_chan *tmp; |
3184 | ||
3185 | if (conn->type != type) | |
3186 | continue; | |
3187 | ||
3188 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3189 | continue; | |
3190 | ||
3191 | conn_num++; | |
3192 | ||
8192edef | 3193 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
3194 | struct sk_buff *skb; |
3195 | ||
3196 | if (skb_queue_empty(&tmp->data_q)) | |
3197 | continue; | |
3198 | ||
3199 | skb = skb_peek(&tmp->data_q); | |
3200 | if (skb->priority < cur_prio) | |
3201 | continue; | |
3202 | ||
3203 | if (skb->priority > cur_prio) { | |
3204 | num = 0; | |
3205 | min = ~0; | |
3206 | cur_prio = skb->priority; | |
3207 | } | |
3208 | ||
3209 | num++; | |
3210 | ||
3211 | if (conn->sent < min) { | |
3212 | min = conn->sent; | |
3213 | chan = tmp; | |
3214 | } | |
3215 | } | |
3216 | ||
3217 | if (hci_conn_num(hdev, type) == conn_num) | |
3218 | break; | |
3219 | } | |
3220 | ||
bf4c6325 GP |
3221 | rcu_read_unlock(); |
3222 | ||
73d80deb LAD |
3223 | if (!chan) |
3224 | return NULL; | |
3225 | ||
3226 | switch (chan->conn->type) { | |
3227 | case ACL_LINK: | |
3228 | cnt = hdev->acl_cnt; | |
3229 | break; | |
bd1eb66b AE |
3230 | case AMP_LINK: |
3231 | cnt = hdev->block_cnt; | |
3232 | break; | |
73d80deb LAD |
3233 | case SCO_LINK: |
3234 | case ESCO_LINK: | |
3235 | cnt = hdev->sco_cnt; | |
3236 | break; | |
3237 | case LE_LINK: | |
3238 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3239 | break; | |
3240 | default: | |
3241 | cnt = 0; | |
3242 | BT_ERR("Unknown link type"); | |
3243 | } | |
3244 | ||
3245 | q = cnt / num; | |
3246 | *quote = q ? q : 1; | |
3247 | BT_DBG("chan %p quote %d", chan, *quote); | |
3248 | return chan; | |
3249 | } | |
3250 | ||
02b20f0b LAD |
3251 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
3252 | { | |
3253 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3254 | struct hci_conn *conn; | |
3255 | int num = 0; | |
3256 | ||
3257 | BT_DBG("%s", hdev->name); | |
3258 | ||
bf4c6325 GP |
3259 | rcu_read_lock(); |
3260 | ||
3261 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
3262 | struct hci_chan *chan; |
3263 | ||
3264 | if (conn->type != type) | |
3265 | continue; | |
3266 | ||
3267 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3268 | continue; | |
3269 | ||
3270 | num++; | |
3271 | ||
8192edef | 3272 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
3273 | struct sk_buff *skb; |
3274 | ||
3275 | if (chan->sent) { | |
3276 | chan->sent = 0; | |
3277 | continue; | |
3278 | } | |
3279 | ||
3280 | if (skb_queue_empty(&chan->data_q)) | |
3281 | continue; | |
3282 | ||
3283 | skb = skb_peek(&chan->data_q); | |
3284 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
3285 | continue; | |
3286 | ||
3287 | skb->priority = HCI_PRIO_MAX - 1; | |
3288 | ||
3289 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 3290 | skb->priority); |
02b20f0b LAD |
3291 | } |
3292 | ||
3293 | if (hci_conn_num(hdev, type) == num) | |
3294 | break; | |
3295 | } | |
bf4c6325 GP |
3296 | |
3297 | rcu_read_unlock(); | |
3298 | ||
02b20f0b LAD |
3299 | } |
3300 | ||
b71d385a AE |
3301 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
3302 | { | |
3303 | /* Calculate count of blocks used by this packet */ | |
3304 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
3305 | } | |
3306 | ||
6039aa73 | 3307 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 3308 | { |
1da177e4 LT |
3309 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
3310 | /* ACL tx timeout must be longer than maximum | |
3311 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 3312 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 3313 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 3314 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 3315 | } |
63d2bc1b | 3316 | } |
1da177e4 | 3317 | |
6039aa73 | 3318 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
3319 | { |
3320 | unsigned int cnt = hdev->acl_cnt; | |
3321 | struct hci_chan *chan; | |
3322 | struct sk_buff *skb; | |
3323 | int quote; | |
3324 | ||
3325 | __check_timeout(hdev, cnt); | |
04837f64 | 3326 | |
73d80deb | 3327 | while (hdev->acl_cnt && |
a8c5fb1a | 3328 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
3329 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3330 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3331 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3332 | skb->len, skb->priority); |
73d80deb | 3333 | |
ec1cce24 LAD |
3334 | /* Stop if priority has changed */ |
3335 | if (skb->priority < priority) | |
3336 | break; | |
3337 | ||
3338 | skb = skb_dequeue(&chan->data_q); | |
3339 | ||
73d80deb | 3340 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 3341 | bt_cb(skb)->force_active); |
04837f64 | 3342 | |
57d17d70 | 3343 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3344 | hdev->acl_last_tx = jiffies; |
3345 | ||
3346 | hdev->acl_cnt--; | |
73d80deb LAD |
3347 | chan->sent++; |
3348 | chan->conn->sent++; | |
1da177e4 LT |
3349 | } |
3350 | } | |
02b20f0b LAD |
3351 | |
3352 | if (cnt != hdev->acl_cnt) | |
3353 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
3354 | } |
3355 | ||
6039aa73 | 3356 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 3357 | { |
63d2bc1b | 3358 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
3359 | struct hci_chan *chan; |
3360 | struct sk_buff *skb; | |
3361 | int quote; | |
bd1eb66b | 3362 | u8 type; |
b71d385a | 3363 | |
63d2bc1b | 3364 | __check_timeout(hdev, cnt); |
b71d385a | 3365 | |
bd1eb66b AE |
3366 | BT_DBG("%s", hdev->name); |
3367 | ||
3368 | if (hdev->dev_type == HCI_AMP) | |
3369 | type = AMP_LINK; | |
3370 | else | |
3371 | type = ACL_LINK; | |
3372 | ||
b71d385a | 3373 | while (hdev->block_cnt > 0 && |
bd1eb66b | 3374 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
3375 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3376 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
3377 | int blocks; | |
3378 | ||
3379 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 3380 | skb->len, skb->priority); |
b71d385a AE |
3381 | |
3382 | /* Stop if priority has changed */ | |
3383 | if (skb->priority < priority) | |
3384 | break; | |
3385 | ||
3386 | skb = skb_dequeue(&chan->data_q); | |
3387 | ||
3388 | blocks = __get_blocks(hdev, skb); | |
3389 | if (blocks > hdev->block_cnt) | |
3390 | return; | |
3391 | ||
3392 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 3393 | bt_cb(skb)->force_active); |
b71d385a | 3394 | |
57d17d70 | 3395 | hci_send_frame(hdev, skb); |
b71d385a AE |
3396 | hdev->acl_last_tx = jiffies; |
3397 | ||
3398 | hdev->block_cnt -= blocks; | |
3399 | quote -= blocks; | |
3400 | ||
3401 | chan->sent += blocks; | |
3402 | chan->conn->sent += blocks; | |
3403 | } | |
3404 | } | |
3405 | ||
3406 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 3407 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
3408 | } |
3409 | ||
6039aa73 | 3410 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
3411 | { |
3412 | BT_DBG("%s", hdev->name); | |
3413 | ||
bd1eb66b AE |
3414 | /* No ACL link over BR/EDR controller */ |
3415 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
3416 | return; | |
3417 | ||
3418 | /* No AMP link over AMP controller */ | |
3419 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
3420 | return; |
3421 | ||
3422 | switch (hdev->flow_ctl_mode) { | |
3423 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
3424 | hci_sched_acl_pkt(hdev); | |
3425 | break; | |
3426 | ||
3427 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
3428 | hci_sched_acl_blk(hdev); | |
3429 | break; | |
3430 | } | |
3431 | } | |
3432 | ||
1da177e4 | 3433 | /* Schedule SCO */ |
6039aa73 | 3434 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
3435 | { |
3436 | struct hci_conn *conn; | |
3437 | struct sk_buff *skb; | |
3438 | int quote; | |
3439 | ||
3440 | BT_DBG("%s", hdev->name); | |
3441 | ||
52087a79 LAD |
3442 | if (!hci_conn_num(hdev, SCO_LINK)) |
3443 | return; | |
3444 | ||
1da177e4 LT |
3445 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
3446 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
3447 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3448 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3449 | |
3450 | conn->sent++; | |
3451 | if (conn->sent == ~0) | |
3452 | conn->sent = 0; | |
3453 | } | |
3454 | } | |
3455 | } | |
3456 | ||
6039aa73 | 3457 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
3458 | { |
3459 | struct hci_conn *conn; | |
3460 | struct sk_buff *skb; | |
3461 | int quote; | |
3462 | ||
3463 | BT_DBG("%s", hdev->name); | |
3464 | ||
52087a79 LAD |
3465 | if (!hci_conn_num(hdev, ESCO_LINK)) |
3466 | return; | |
3467 | ||
8fc9ced3 GP |
3468 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
3469 | "e))) { | |
b6a0dc82 MH |
3470 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
3471 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 3472 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
3473 | |
3474 | conn->sent++; | |
3475 | if (conn->sent == ~0) | |
3476 | conn->sent = 0; | |
3477 | } | |
3478 | } | |
3479 | } | |
3480 | ||
6039aa73 | 3481 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 3482 | { |
73d80deb | 3483 | struct hci_chan *chan; |
6ed58ec5 | 3484 | struct sk_buff *skb; |
02b20f0b | 3485 | int quote, cnt, tmp; |
6ed58ec5 VT |
3486 | |
3487 | BT_DBG("%s", hdev->name); | |
3488 | ||
52087a79 LAD |
3489 | if (!hci_conn_num(hdev, LE_LINK)) |
3490 | return; | |
3491 | ||
6ed58ec5 VT |
3492 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
3493 | /* LE tx timeout must be longer than maximum | |
3494 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 3495 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 3496 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 3497 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
3498 | } |
3499 | ||
3500 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 3501 | tmp = cnt; |
73d80deb | 3502 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
3503 | u32 priority = (skb_peek(&chan->data_q))->priority; |
3504 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 3505 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 3506 | skb->len, skb->priority); |
6ed58ec5 | 3507 | |
ec1cce24 LAD |
3508 | /* Stop if priority has changed */ |
3509 | if (skb->priority < priority) | |
3510 | break; | |
3511 | ||
3512 | skb = skb_dequeue(&chan->data_q); | |
3513 | ||
57d17d70 | 3514 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
3515 | hdev->le_last_tx = jiffies; |
3516 | ||
3517 | cnt--; | |
73d80deb LAD |
3518 | chan->sent++; |
3519 | chan->conn->sent++; | |
6ed58ec5 VT |
3520 | } |
3521 | } | |
73d80deb | 3522 | |
6ed58ec5 VT |
3523 | if (hdev->le_pkts) |
3524 | hdev->le_cnt = cnt; | |
3525 | else | |
3526 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
3527 | |
3528 | if (cnt != tmp) | |
3529 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
3530 | } |
3531 | ||
3eff45ea | 3532 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 3533 | { |
3eff45ea | 3534 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
3535 | struct sk_buff *skb; |
3536 | ||
6ed58ec5 | 3537 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 3538 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 3539 | |
52de599e MH |
3540 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
3541 | /* Schedule queues and send stuff to HCI driver */ | |
3542 | hci_sched_acl(hdev); | |
3543 | hci_sched_sco(hdev); | |
3544 | hci_sched_esco(hdev); | |
3545 | hci_sched_le(hdev); | |
3546 | } | |
6ed58ec5 | 3547 | |
1da177e4 LT |
3548 | /* Send next queued raw (unknown type) packet */ |
3549 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 3550 | hci_send_frame(hdev, skb); |
1da177e4 LT |
3551 | } |
3552 | ||
25985edc | 3553 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
3554 | |
3555 | /* ACL data packet */ | |
6039aa73 | 3556 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3557 | { |
3558 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
3559 | struct hci_conn *conn; | |
3560 | __u16 handle, flags; | |
3561 | ||
3562 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
3563 | ||
3564 | handle = __le16_to_cpu(hdr->handle); | |
3565 | flags = hci_flags(handle); | |
3566 | handle = hci_handle(handle); | |
3567 | ||
f0e09510 | 3568 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 3569 | handle, flags); |
1da177e4 LT |
3570 | |
3571 | hdev->stat.acl_rx++; | |
3572 | ||
3573 | hci_dev_lock(hdev); | |
3574 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3575 | hci_dev_unlock(hdev); | |
8e87d142 | 3576 | |
1da177e4 | 3577 | if (conn) { |
65983fc7 | 3578 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 3579 | |
1da177e4 | 3580 | /* Send to upper protocol */ |
686ebf28 UF |
3581 | l2cap_recv_acldata(conn, skb, flags); |
3582 | return; | |
1da177e4 | 3583 | } else { |
8e87d142 | 3584 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 3585 | hdev->name, handle); |
1da177e4 LT |
3586 | } |
3587 | ||
3588 | kfree_skb(skb); | |
3589 | } | |
3590 | ||
3591 | /* SCO data packet */ | |
6039aa73 | 3592 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
3593 | { |
3594 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
3595 | struct hci_conn *conn; | |
3596 | __u16 handle; | |
3597 | ||
3598 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
3599 | ||
3600 | handle = __le16_to_cpu(hdr->handle); | |
3601 | ||
f0e09510 | 3602 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
3603 | |
3604 | hdev->stat.sco_rx++; | |
3605 | ||
3606 | hci_dev_lock(hdev); | |
3607 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
3608 | hci_dev_unlock(hdev); | |
3609 | ||
3610 | if (conn) { | |
1da177e4 | 3611 | /* Send to upper protocol */ |
686ebf28 UF |
3612 | sco_recv_scodata(conn, skb); |
3613 | return; | |
1da177e4 | 3614 | } else { |
8e87d142 | 3615 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 3616 | hdev->name, handle); |
1da177e4 LT |
3617 | } |
3618 | ||
3619 | kfree_skb(skb); | |
3620 | } | |
3621 | ||
9238f36a JH |
3622 | static bool hci_req_is_complete(struct hci_dev *hdev) |
3623 | { | |
3624 | struct sk_buff *skb; | |
3625 | ||
3626 | skb = skb_peek(&hdev->cmd_q); | |
3627 | if (!skb) | |
3628 | return true; | |
3629 | ||
3630 | return bt_cb(skb)->req.start; | |
3631 | } | |
3632 | ||
42c6b129 JH |
3633 | static void hci_resend_last(struct hci_dev *hdev) |
3634 | { | |
3635 | struct hci_command_hdr *sent; | |
3636 | struct sk_buff *skb; | |
3637 | u16 opcode; | |
3638 | ||
3639 | if (!hdev->sent_cmd) | |
3640 | return; | |
3641 | ||
3642 | sent = (void *) hdev->sent_cmd->data; | |
3643 | opcode = __le16_to_cpu(sent->opcode); | |
3644 | if (opcode == HCI_OP_RESET) | |
3645 | return; | |
3646 | ||
3647 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
3648 | if (!skb) | |
3649 | return; | |
3650 | ||
3651 | skb_queue_head(&hdev->cmd_q, skb); | |
3652 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
3653 | } | |
3654 | ||
9238f36a JH |
3655 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status) |
3656 | { | |
3657 | hci_req_complete_t req_complete = NULL; | |
3658 | struct sk_buff *skb; | |
3659 | unsigned long flags; | |
3660 | ||
3661 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
3662 | ||
42c6b129 JH |
3663 | /* If the completed command doesn't match the last one that was |
3664 | * sent we need to do special handling of it. | |
9238f36a | 3665 | */ |
42c6b129 JH |
3666 | if (!hci_sent_cmd_data(hdev, opcode)) { |
3667 | /* Some CSR based controllers generate a spontaneous | |
3668 | * reset complete event during init and any pending | |
3669 | * command will never be completed. In such a case we | |
3670 | * need to resend whatever was the last sent | |
3671 | * command. | |
3672 | */ | |
3673 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
3674 | hci_resend_last(hdev); | |
3675 | ||
9238f36a | 3676 | return; |
42c6b129 | 3677 | } |
9238f36a JH |
3678 | |
3679 | /* If the command succeeded and there's still more commands in | |
3680 | * this request the request is not yet complete. | |
3681 | */ | |
3682 | if (!status && !hci_req_is_complete(hdev)) | |
3683 | return; | |
3684 | ||
3685 | /* If this was the last command in a request the complete | |
3686 | * callback would be found in hdev->sent_cmd instead of the | |
3687 | * command queue (hdev->cmd_q). | |
3688 | */ | |
3689 | if (hdev->sent_cmd) { | |
3690 | req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
53e21fbc JH |
3691 | |
3692 | if (req_complete) { | |
3693 | /* We must set the complete callback to NULL to | |
3694 | * avoid calling the callback more than once if | |
3695 | * this function gets called again. | |
3696 | */ | |
3697 | bt_cb(hdev->sent_cmd)->req.complete = NULL; | |
3698 | ||
9238f36a | 3699 | goto call_complete; |
53e21fbc | 3700 | } |
9238f36a JH |
3701 | } |
3702 | ||
3703 | /* Remove all pending commands belonging to this request */ | |
3704 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
3705 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
3706 | if (bt_cb(skb)->req.start) { | |
3707 | __skb_queue_head(&hdev->cmd_q, skb); | |
3708 | break; | |
3709 | } | |
3710 | ||
3711 | req_complete = bt_cb(skb)->req.complete; | |
3712 | kfree_skb(skb); | |
3713 | } | |
3714 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
3715 | ||
3716 | call_complete: | |
3717 | if (req_complete) | |
3718 | req_complete(hdev, status); | |
3719 | } | |
3720 | ||
b78752cc | 3721 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 3722 | { |
b78752cc | 3723 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
3724 | struct sk_buff *skb; |
3725 | ||
3726 | BT_DBG("%s", hdev->name); | |
3727 | ||
1da177e4 | 3728 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
3729 | /* Send copy to monitor */ |
3730 | hci_send_to_monitor(hdev, skb); | |
3731 | ||
1da177e4 LT |
3732 | if (atomic_read(&hdev->promisc)) { |
3733 | /* Send copy to the sockets */ | |
470fe1b5 | 3734 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3735 | } |
3736 | ||
0736cfa8 MH |
3737 | if (test_bit(HCI_RAW, &hdev->flags) || |
3738 | test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { | |
1da177e4 LT |
3739 | kfree_skb(skb); |
3740 | continue; | |
3741 | } | |
3742 | ||
3743 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
3744 | /* Don't process data packets in this states. */ | |
0d48d939 | 3745 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
3746 | case HCI_ACLDATA_PKT: |
3747 | case HCI_SCODATA_PKT: | |
3748 | kfree_skb(skb); | |
3749 | continue; | |
3ff50b79 | 3750 | } |
1da177e4 LT |
3751 | } |
3752 | ||
3753 | /* Process frame */ | |
0d48d939 | 3754 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 3755 | case HCI_EVENT_PKT: |
b78752cc | 3756 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
3757 | hci_event_packet(hdev, skb); |
3758 | break; | |
3759 | ||
3760 | case HCI_ACLDATA_PKT: | |
3761 | BT_DBG("%s ACL data packet", hdev->name); | |
3762 | hci_acldata_packet(hdev, skb); | |
3763 | break; | |
3764 | ||
3765 | case HCI_SCODATA_PKT: | |
3766 | BT_DBG("%s SCO data packet", hdev->name); | |
3767 | hci_scodata_packet(hdev, skb); | |
3768 | break; | |
3769 | ||
3770 | default: | |
3771 | kfree_skb(skb); | |
3772 | break; | |
3773 | } | |
3774 | } | |
1da177e4 LT |
3775 | } |
3776 | ||
c347b765 | 3777 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 3778 | { |
c347b765 | 3779 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
3780 | struct sk_buff *skb; |
3781 | ||
2104786b AE |
3782 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
3783 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 3784 | |
1da177e4 | 3785 | /* Send queued commands */ |
5a08ecce AE |
3786 | if (atomic_read(&hdev->cmd_cnt)) { |
3787 | skb = skb_dequeue(&hdev->cmd_q); | |
3788 | if (!skb) | |
3789 | return; | |
3790 | ||
7585b97a | 3791 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 3792 | |
a675d7f1 | 3793 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 3794 | if (hdev->sent_cmd) { |
1da177e4 | 3795 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 3796 | hci_send_frame(hdev, skb); |
7bdb8a5c SJ |
3797 | if (test_bit(HCI_RESET, &hdev->flags)) |
3798 | del_timer(&hdev->cmd_timer); | |
3799 | else | |
3800 | mod_timer(&hdev->cmd_timer, | |
5f246e89 | 3801 | jiffies + HCI_CMD_TIMEOUT); |
1da177e4 LT |
3802 | } else { |
3803 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 3804 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3805 | } |
3806 | } | |
3807 | } |