Commit | Line | Data |
---|---|---|
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> |
99780a7b | 32 | #include <linux/crypto.h> |
47219839 | 33 | #include <asm/unaligned.h> |
1da177e4 LT |
34 | |
35 | #include <net/bluetooth/bluetooth.h> | |
36 | #include <net/bluetooth/hci_core.h> | |
4bc58f51 | 37 | #include <net/bluetooth/l2cap.h> |
af58925c | 38 | #include <net/bluetooth/mgmt.h> |
1da177e4 | 39 | |
970c4e46 JH |
40 | #include "smp.h" |
41 | ||
b78752cc | 42 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 43 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 44 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 45 | |
1da177e4 LT |
46 | /* HCI device list */ |
47 | LIST_HEAD(hci_dev_list); | |
48 | DEFINE_RWLOCK(hci_dev_list_lock); | |
49 | ||
50 | /* HCI callback list */ | |
51 | LIST_HEAD(hci_cb_list); | |
52 | DEFINE_RWLOCK(hci_cb_list_lock); | |
53 | ||
3df92b31 SL |
54 | /* HCI ID Numbering */ |
55 | static DEFINE_IDA(hci_index_ida); | |
56 | ||
899de765 MH |
57 | /* ----- HCI requests ----- */ |
58 | ||
59 | #define HCI_REQ_DONE 0 | |
60 | #define HCI_REQ_PEND 1 | |
61 | #define HCI_REQ_CANCELED 2 | |
62 | ||
63 | #define hci_req_lock(d) mutex_lock(&d->req_lock) | |
64 | #define hci_req_unlock(d) mutex_unlock(&d->req_lock) | |
65 | ||
1da177e4 LT |
66 | /* ---- HCI notifications ---- */ |
67 | ||
6516455d | 68 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 69 | { |
040030ef | 70 | hci_sock_dev_event(hdev, event); |
1da177e4 LT |
71 | } |
72 | ||
baf27f6e MH |
73 | /* ---- HCI debugfs entries ---- */ |
74 | ||
4b4148e9 MH |
75 | static ssize_t dut_mode_read(struct file *file, char __user *user_buf, |
76 | size_t count, loff_t *ppos) | |
77 | { | |
78 | struct hci_dev *hdev = file->private_data; | |
79 | char buf[3]; | |
80 | ||
111902f7 | 81 | buf[0] = test_bit(HCI_DUT_MODE, &hdev->dbg_flags) ? 'Y': 'N'; |
4b4148e9 MH |
82 | buf[1] = '\n'; |
83 | buf[2] = '\0'; | |
84 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
85 | } | |
86 | ||
87 | static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, | |
88 | size_t count, loff_t *ppos) | |
89 | { | |
90 | struct hci_dev *hdev = file->private_data; | |
91 | struct sk_buff *skb; | |
92 | char buf[32]; | |
93 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
94 | bool enable; | |
95 | int err; | |
96 | ||
97 | if (!test_bit(HCI_UP, &hdev->flags)) | |
98 | return -ENETDOWN; | |
99 | ||
100 | if (copy_from_user(buf, user_buf, buf_size)) | |
101 | return -EFAULT; | |
102 | ||
103 | buf[buf_size] = '\0'; | |
104 | if (strtobool(buf, &enable)) | |
105 | return -EINVAL; | |
106 | ||
111902f7 | 107 | if (enable == test_bit(HCI_DUT_MODE, &hdev->dbg_flags)) |
4b4148e9 MH |
108 | return -EALREADY; |
109 | ||
110 | hci_req_lock(hdev); | |
111 | if (enable) | |
112 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, | |
113 | HCI_CMD_TIMEOUT); | |
114 | else | |
115 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, | |
116 | HCI_CMD_TIMEOUT); | |
117 | hci_req_unlock(hdev); | |
118 | ||
119 | if (IS_ERR(skb)) | |
120 | return PTR_ERR(skb); | |
121 | ||
122 | err = -bt_to_errno(skb->data[0]); | |
123 | kfree_skb(skb); | |
124 | ||
125 | if (err < 0) | |
126 | return err; | |
127 | ||
111902f7 | 128 | change_bit(HCI_DUT_MODE, &hdev->dbg_flags); |
4b4148e9 MH |
129 | |
130 | return count; | |
131 | } | |
132 | ||
133 | static const struct file_operations dut_mode_fops = { | |
134 | .open = simple_open, | |
135 | .read = dut_mode_read, | |
136 | .write = dut_mode_write, | |
137 | .llseek = default_llseek, | |
138 | }; | |
139 | ||
dfb826a8 MH |
140 | static int features_show(struct seq_file *f, void *ptr) |
141 | { | |
142 | struct hci_dev *hdev = f->private; | |
143 | u8 p; | |
144 | ||
145 | hci_dev_lock(hdev); | |
146 | for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
cfbb2b5b | 147 | seq_printf(f, "%2u: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x " |
dfb826a8 MH |
148 | "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n", p, |
149 | hdev->features[p][0], hdev->features[p][1], | |
150 | hdev->features[p][2], hdev->features[p][3], | |
151 | hdev->features[p][4], hdev->features[p][5], | |
152 | hdev->features[p][6], hdev->features[p][7]); | |
153 | } | |
cfbb2b5b MH |
154 | if (lmp_le_capable(hdev)) |
155 | seq_printf(f, "LE: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x " | |
156 | "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n", | |
157 | hdev->le_features[0], hdev->le_features[1], | |
158 | hdev->le_features[2], hdev->le_features[3], | |
159 | hdev->le_features[4], hdev->le_features[5], | |
160 | hdev->le_features[6], hdev->le_features[7]); | |
dfb826a8 MH |
161 | hci_dev_unlock(hdev); |
162 | ||
163 | return 0; | |
164 | } | |
165 | ||
166 | static int features_open(struct inode *inode, struct file *file) | |
167 | { | |
168 | return single_open(file, features_show, inode->i_private); | |
169 | } | |
170 | ||
171 | static const struct file_operations features_fops = { | |
172 | .open = features_open, | |
173 | .read = seq_read, | |
174 | .llseek = seq_lseek, | |
175 | .release = single_release, | |
176 | }; | |
177 | ||
70afe0b8 MH |
178 | static int blacklist_show(struct seq_file *f, void *p) |
179 | { | |
180 | struct hci_dev *hdev = f->private; | |
181 | struct bdaddr_list *b; | |
182 | ||
183 | hci_dev_lock(hdev); | |
184 | list_for_each_entry(b, &hdev->blacklist, list) | |
b25f0785 | 185 | seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type); |
70afe0b8 MH |
186 | hci_dev_unlock(hdev); |
187 | ||
188 | return 0; | |
189 | } | |
190 | ||
191 | static int blacklist_open(struct inode *inode, struct file *file) | |
192 | { | |
193 | return single_open(file, blacklist_show, inode->i_private); | |
194 | } | |
195 | ||
196 | static const struct file_operations blacklist_fops = { | |
197 | .open = blacklist_open, | |
198 | .read = seq_read, | |
199 | .llseek = seq_lseek, | |
200 | .release = single_release, | |
201 | }; | |
202 | ||
6659358e JH |
203 | static int whitelist_show(struct seq_file *f, void *p) |
204 | { | |
205 | struct hci_dev *hdev = f->private; | |
206 | struct bdaddr_list *b; | |
207 | ||
208 | hci_dev_lock(hdev); | |
209 | list_for_each_entry(b, &hdev->whitelist, list) | |
210 | seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type); | |
211 | hci_dev_unlock(hdev); | |
212 | ||
213 | return 0; | |
214 | } | |
215 | ||
216 | static int whitelist_open(struct inode *inode, struct file *file) | |
217 | { | |
218 | return single_open(file, whitelist_show, inode->i_private); | |
219 | } | |
220 | ||
221 | static const struct file_operations whitelist_fops = { | |
222 | .open = whitelist_open, | |
223 | .read = seq_read, | |
224 | .llseek = seq_lseek, | |
225 | .release = single_release, | |
226 | }; | |
227 | ||
47219839 MH |
228 | static int uuids_show(struct seq_file *f, void *p) |
229 | { | |
230 | struct hci_dev *hdev = f->private; | |
231 | struct bt_uuid *uuid; | |
232 | ||
233 | hci_dev_lock(hdev); | |
234 | list_for_each_entry(uuid, &hdev->uuids, list) { | |
58f01aa9 MH |
235 | u8 i, val[16]; |
236 | ||
237 | /* The Bluetooth UUID values are stored in big endian, | |
238 | * but with reversed byte order. So convert them into | |
239 | * the right order for the %pUb modifier. | |
240 | */ | |
241 | for (i = 0; i < 16; i++) | |
242 | val[i] = uuid->uuid[15 - i]; | |
243 | ||
244 | seq_printf(f, "%pUb\n", val); | |
47219839 MH |
245 | } |
246 | hci_dev_unlock(hdev); | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
251 | static int uuids_open(struct inode *inode, struct file *file) | |
252 | { | |
253 | return single_open(file, uuids_show, inode->i_private); | |
254 | } | |
255 | ||
256 | static const struct file_operations uuids_fops = { | |
257 | .open = uuids_open, | |
258 | .read = seq_read, | |
259 | .llseek = seq_lseek, | |
260 | .release = single_release, | |
261 | }; | |
262 | ||
baf27f6e MH |
263 | static int inquiry_cache_show(struct seq_file *f, void *p) |
264 | { | |
265 | struct hci_dev *hdev = f->private; | |
266 | struct discovery_state *cache = &hdev->discovery; | |
267 | struct inquiry_entry *e; | |
268 | ||
269 | hci_dev_lock(hdev); | |
270 | ||
271 | list_for_each_entry(e, &cache->all, all) { | |
272 | struct inquiry_data *data = &e->data; | |
273 | seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", | |
274 | &data->bdaddr, | |
275 | data->pscan_rep_mode, data->pscan_period_mode, | |
276 | data->pscan_mode, data->dev_class[2], | |
277 | data->dev_class[1], data->dev_class[0], | |
278 | __le16_to_cpu(data->clock_offset), | |
279 | data->rssi, data->ssp_mode, e->timestamp); | |
280 | } | |
281 | ||
282 | hci_dev_unlock(hdev); | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
287 | static int inquiry_cache_open(struct inode *inode, struct file *file) | |
288 | { | |
289 | return single_open(file, inquiry_cache_show, inode->i_private); | |
290 | } | |
291 | ||
292 | static const struct file_operations inquiry_cache_fops = { | |
293 | .open = inquiry_cache_open, | |
294 | .read = seq_read, | |
295 | .llseek = seq_lseek, | |
296 | .release = single_release, | |
297 | }; | |
298 | ||
02d08d15 MH |
299 | static int link_keys_show(struct seq_file *f, void *ptr) |
300 | { | |
301 | struct hci_dev *hdev = f->private; | |
302 | struct list_head *p, *n; | |
303 | ||
304 | hci_dev_lock(hdev); | |
305 | list_for_each_safe(p, n, &hdev->link_keys) { | |
306 | struct link_key *key = list_entry(p, struct link_key, list); | |
307 | seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type, | |
308 | HCI_LINK_KEY_SIZE, key->val, key->pin_len); | |
309 | } | |
310 | hci_dev_unlock(hdev); | |
311 | ||
312 | return 0; | |
313 | } | |
314 | ||
315 | static int link_keys_open(struct inode *inode, struct file *file) | |
316 | { | |
317 | return single_open(file, link_keys_show, inode->i_private); | |
318 | } | |
319 | ||
320 | static const struct file_operations link_keys_fops = { | |
321 | .open = link_keys_open, | |
322 | .read = seq_read, | |
323 | .llseek = seq_lseek, | |
324 | .release = single_release, | |
325 | }; | |
326 | ||
babdbb3c MH |
327 | static int dev_class_show(struct seq_file *f, void *ptr) |
328 | { | |
329 | struct hci_dev *hdev = f->private; | |
330 | ||
331 | hci_dev_lock(hdev); | |
332 | seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2], | |
333 | hdev->dev_class[1], hdev->dev_class[0]); | |
334 | hci_dev_unlock(hdev); | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
339 | static int dev_class_open(struct inode *inode, struct file *file) | |
340 | { | |
341 | return single_open(file, dev_class_show, inode->i_private); | |
342 | } | |
343 | ||
344 | static const struct file_operations dev_class_fops = { | |
345 | .open = dev_class_open, | |
346 | .read = seq_read, | |
347 | .llseek = seq_lseek, | |
348 | .release = single_release, | |
349 | }; | |
350 | ||
041000b9 MH |
351 | static int voice_setting_get(void *data, u64 *val) |
352 | { | |
353 | struct hci_dev *hdev = data; | |
354 | ||
355 | hci_dev_lock(hdev); | |
356 | *val = hdev->voice_setting; | |
357 | hci_dev_unlock(hdev); | |
358 | ||
359 | return 0; | |
360 | } | |
361 | ||
362 | DEFINE_SIMPLE_ATTRIBUTE(voice_setting_fops, voice_setting_get, | |
363 | NULL, "0x%4.4llx\n"); | |
364 | ||
ebd1e33b MH |
365 | static int auto_accept_delay_set(void *data, u64 val) |
366 | { | |
367 | struct hci_dev *hdev = data; | |
368 | ||
369 | hci_dev_lock(hdev); | |
370 | hdev->auto_accept_delay = val; | |
371 | hci_dev_unlock(hdev); | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | static int auto_accept_delay_get(void *data, u64 *val) | |
377 | { | |
378 | struct hci_dev *hdev = data; | |
379 | ||
380 | hci_dev_lock(hdev); | |
381 | *val = hdev->auto_accept_delay; | |
382 | hci_dev_unlock(hdev); | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
387 | DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get, | |
388 | auto_accept_delay_set, "%llu\n"); | |
389 | ||
5afeac14 MH |
390 | static ssize_t force_sc_support_read(struct file *file, char __user *user_buf, |
391 | size_t count, loff_t *ppos) | |
392 | { | |
393 | struct hci_dev *hdev = file->private_data; | |
394 | char buf[3]; | |
395 | ||
111902f7 | 396 | buf[0] = test_bit(HCI_FORCE_SC, &hdev->dbg_flags) ? 'Y': 'N'; |
5afeac14 MH |
397 | buf[1] = '\n'; |
398 | buf[2] = '\0'; | |
399 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
400 | } | |
401 | ||
402 | static ssize_t force_sc_support_write(struct file *file, | |
403 | const char __user *user_buf, | |
404 | size_t count, loff_t *ppos) | |
405 | { | |
406 | struct hci_dev *hdev = file->private_data; | |
407 | char buf[32]; | |
408 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
409 | bool enable; | |
410 | ||
411 | if (test_bit(HCI_UP, &hdev->flags)) | |
412 | return -EBUSY; | |
413 | ||
414 | if (copy_from_user(buf, user_buf, buf_size)) | |
415 | return -EFAULT; | |
416 | ||
417 | buf[buf_size] = '\0'; | |
418 | if (strtobool(buf, &enable)) | |
419 | return -EINVAL; | |
420 | ||
111902f7 | 421 | if (enable == test_bit(HCI_FORCE_SC, &hdev->dbg_flags)) |
5afeac14 MH |
422 | return -EALREADY; |
423 | ||
111902f7 | 424 | change_bit(HCI_FORCE_SC, &hdev->dbg_flags); |
5afeac14 MH |
425 | |
426 | return count; | |
427 | } | |
428 | ||
429 | static const struct file_operations force_sc_support_fops = { | |
430 | .open = simple_open, | |
431 | .read = force_sc_support_read, | |
432 | .write = force_sc_support_write, | |
433 | .llseek = default_llseek, | |
434 | }; | |
435 | ||
134c2a89 MH |
436 | static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf, |
437 | size_t count, loff_t *ppos) | |
438 | { | |
439 | struct hci_dev *hdev = file->private_data; | |
440 | char buf[3]; | |
441 | ||
442 | buf[0] = test_bit(HCI_SC_ONLY, &hdev->dev_flags) ? 'Y': 'N'; | |
443 | buf[1] = '\n'; | |
444 | buf[2] = '\0'; | |
445 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
446 | } | |
447 | ||
448 | static const struct file_operations sc_only_mode_fops = { | |
449 | .open = simple_open, | |
450 | .read = sc_only_mode_read, | |
451 | .llseek = default_llseek, | |
452 | }; | |
453 | ||
2bfa3531 MH |
454 | static int idle_timeout_set(void *data, u64 val) |
455 | { | |
456 | struct hci_dev *hdev = data; | |
457 | ||
458 | if (val != 0 && (val < 500 || val > 3600000)) | |
459 | return -EINVAL; | |
460 | ||
461 | hci_dev_lock(hdev); | |
2be48b65 | 462 | hdev->idle_timeout = val; |
2bfa3531 MH |
463 | hci_dev_unlock(hdev); |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
468 | static int idle_timeout_get(void *data, u64 *val) | |
469 | { | |
470 | struct hci_dev *hdev = data; | |
471 | ||
472 | hci_dev_lock(hdev); | |
473 | *val = hdev->idle_timeout; | |
474 | hci_dev_unlock(hdev); | |
475 | ||
476 | return 0; | |
477 | } | |
478 | ||
479 | DEFINE_SIMPLE_ATTRIBUTE(idle_timeout_fops, idle_timeout_get, | |
480 | idle_timeout_set, "%llu\n"); | |
481 | ||
c982b2ea JH |
482 | static int rpa_timeout_set(void *data, u64 val) |
483 | { | |
484 | struct hci_dev *hdev = data; | |
485 | ||
486 | /* Require the RPA timeout to be at least 30 seconds and at most | |
487 | * 24 hours. | |
488 | */ | |
489 | if (val < 30 || val > (60 * 60 * 24)) | |
490 | return -EINVAL; | |
491 | ||
492 | hci_dev_lock(hdev); | |
493 | hdev->rpa_timeout = val; | |
494 | hci_dev_unlock(hdev); | |
495 | ||
496 | return 0; | |
497 | } | |
498 | ||
499 | static int rpa_timeout_get(void *data, u64 *val) | |
500 | { | |
501 | struct hci_dev *hdev = data; | |
502 | ||
503 | hci_dev_lock(hdev); | |
504 | *val = hdev->rpa_timeout; | |
505 | hci_dev_unlock(hdev); | |
506 | ||
507 | return 0; | |
508 | } | |
509 | ||
510 | DEFINE_SIMPLE_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get, | |
511 | rpa_timeout_set, "%llu\n"); | |
512 | ||
2bfa3531 MH |
513 | static int sniff_min_interval_set(void *data, u64 val) |
514 | { | |
515 | struct hci_dev *hdev = data; | |
516 | ||
517 | if (val == 0 || val % 2 || val > hdev->sniff_max_interval) | |
518 | return -EINVAL; | |
519 | ||
520 | hci_dev_lock(hdev); | |
2be48b65 | 521 | hdev->sniff_min_interval = val; |
2bfa3531 MH |
522 | hci_dev_unlock(hdev); |
523 | ||
524 | return 0; | |
525 | } | |
526 | ||
527 | static int sniff_min_interval_get(void *data, u64 *val) | |
528 | { | |
529 | struct hci_dev *hdev = data; | |
530 | ||
531 | hci_dev_lock(hdev); | |
532 | *val = hdev->sniff_min_interval; | |
533 | hci_dev_unlock(hdev); | |
534 | ||
535 | return 0; | |
536 | } | |
537 | ||
538 | DEFINE_SIMPLE_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get, | |
539 | sniff_min_interval_set, "%llu\n"); | |
540 | ||
541 | static int sniff_max_interval_set(void *data, u64 val) | |
542 | { | |
543 | struct hci_dev *hdev = data; | |
544 | ||
545 | if (val == 0 || val % 2 || val < hdev->sniff_min_interval) | |
546 | return -EINVAL; | |
547 | ||
548 | hci_dev_lock(hdev); | |
2be48b65 | 549 | hdev->sniff_max_interval = val; |
2bfa3531 MH |
550 | hci_dev_unlock(hdev); |
551 | ||
552 | return 0; | |
553 | } | |
554 | ||
555 | static int sniff_max_interval_get(void *data, u64 *val) | |
556 | { | |
557 | struct hci_dev *hdev = data; | |
558 | ||
559 | hci_dev_lock(hdev); | |
560 | *val = hdev->sniff_max_interval; | |
561 | hci_dev_unlock(hdev); | |
562 | ||
563 | return 0; | |
564 | } | |
565 | ||
566 | DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get, | |
567 | sniff_max_interval_set, "%llu\n"); | |
568 | ||
31ad1691 AK |
569 | static int conn_info_min_age_set(void *data, u64 val) |
570 | { | |
571 | struct hci_dev *hdev = data; | |
572 | ||
573 | if (val == 0 || val > hdev->conn_info_max_age) | |
574 | return -EINVAL; | |
575 | ||
576 | hci_dev_lock(hdev); | |
577 | hdev->conn_info_min_age = val; | |
578 | hci_dev_unlock(hdev); | |
579 | ||
580 | return 0; | |
581 | } | |
582 | ||
583 | static int conn_info_min_age_get(void *data, u64 *val) | |
584 | { | |
585 | struct hci_dev *hdev = data; | |
586 | ||
587 | hci_dev_lock(hdev); | |
588 | *val = hdev->conn_info_min_age; | |
589 | hci_dev_unlock(hdev); | |
590 | ||
591 | return 0; | |
592 | } | |
593 | ||
594 | DEFINE_SIMPLE_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get, | |
595 | conn_info_min_age_set, "%llu\n"); | |
596 | ||
597 | static int conn_info_max_age_set(void *data, u64 val) | |
598 | { | |
599 | struct hci_dev *hdev = data; | |
600 | ||
601 | if (val == 0 || val < hdev->conn_info_min_age) | |
602 | return -EINVAL; | |
603 | ||
604 | hci_dev_lock(hdev); | |
605 | hdev->conn_info_max_age = val; | |
606 | hci_dev_unlock(hdev); | |
607 | ||
608 | return 0; | |
609 | } | |
610 | ||
611 | static int conn_info_max_age_get(void *data, u64 *val) | |
612 | { | |
613 | struct hci_dev *hdev = data; | |
614 | ||
615 | hci_dev_lock(hdev); | |
616 | *val = hdev->conn_info_max_age; | |
617 | hci_dev_unlock(hdev); | |
618 | ||
619 | return 0; | |
620 | } | |
621 | ||
622 | DEFINE_SIMPLE_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get, | |
623 | conn_info_max_age_set, "%llu\n"); | |
624 | ||
ac345813 MH |
625 | static int identity_show(struct seq_file *f, void *p) |
626 | { | |
627 | struct hci_dev *hdev = f->private; | |
a1f4c318 | 628 | bdaddr_t addr; |
ac345813 MH |
629 | u8 addr_type; |
630 | ||
631 | hci_dev_lock(hdev); | |
632 | ||
a1f4c318 | 633 | hci_copy_identity_address(hdev, &addr, &addr_type); |
ac345813 | 634 | |
a1f4c318 | 635 | seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type, |
473deef2 | 636 | 16, hdev->irk, &hdev->rpa); |
ac345813 MH |
637 | |
638 | hci_dev_unlock(hdev); | |
639 | ||
640 | return 0; | |
641 | } | |
642 | ||
643 | static int identity_open(struct inode *inode, struct file *file) | |
644 | { | |
645 | return single_open(file, identity_show, inode->i_private); | |
646 | } | |
647 | ||
648 | static const struct file_operations identity_fops = { | |
649 | .open = identity_open, | |
650 | .read = seq_read, | |
651 | .llseek = seq_lseek, | |
652 | .release = single_release, | |
653 | }; | |
654 | ||
7a4cd51d MH |
655 | static int random_address_show(struct seq_file *f, void *p) |
656 | { | |
657 | struct hci_dev *hdev = f->private; | |
658 | ||
659 | hci_dev_lock(hdev); | |
660 | seq_printf(f, "%pMR\n", &hdev->random_addr); | |
661 | hci_dev_unlock(hdev); | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
666 | static int random_address_open(struct inode *inode, struct file *file) | |
667 | { | |
668 | return single_open(file, random_address_show, inode->i_private); | |
669 | } | |
670 | ||
671 | static const struct file_operations random_address_fops = { | |
672 | .open = random_address_open, | |
673 | .read = seq_read, | |
674 | .llseek = seq_lseek, | |
675 | .release = single_release, | |
676 | }; | |
677 | ||
e7b8fc92 MH |
678 | static int static_address_show(struct seq_file *f, void *p) |
679 | { | |
680 | struct hci_dev *hdev = f->private; | |
681 | ||
682 | hci_dev_lock(hdev); | |
683 | seq_printf(f, "%pMR\n", &hdev->static_addr); | |
684 | hci_dev_unlock(hdev); | |
685 | ||
686 | return 0; | |
687 | } | |
688 | ||
689 | static int static_address_open(struct inode *inode, struct file *file) | |
690 | { | |
691 | return single_open(file, static_address_show, inode->i_private); | |
692 | } | |
693 | ||
694 | static const struct file_operations static_address_fops = { | |
695 | .open = static_address_open, | |
696 | .read = seq_read, | |
697 | .llseek = seq_lseek, | |
698 | .release = single_release, | |
699 | }; | |
700 | ||
b32bba6c MH |
701 | static ssize_t force_static_address_read(struct file *file, |
702 | char __user *user_buf, | |
703 | size_t count, loff_t *ppos) | |
92202185 | 704 | { |
b32bba6c MH |
705 | struct hci_dev *hdev = file->private_data; |
706 | char buf[3]; | |
92202185 | 707 | |
111902f7 | 708 | buf[0] = test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dbg_flags) ? 'Y': 'N'; |
b32bba6c MH |
709 | buf[1] = '\n'; |
710 | buf[2] = '\0'; | |
711 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
92202185 MH |
712 | } |
713 | ||
b32bba6c MH |
714 | static ssize_t force_static_address_write(struct file *file, |
715 | const char __user *user_buf, | |
716 | size_t count, loff_t *ppos) | |
92202185 | 717 | { |
b32bba6c MH |
718 | struct hci_dev *hdev = file->private_data; |
719 | char buf[32]; | |
720 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
721 | bool enable; | |
92202185 | 722 | |
b32bba6c MH |
723 | if (test_bit(HCI_UP, &hdev->flags)) |
724 | return -EBUSY; | |
92202185 | 725 | |
b32bba6c MH |
726 | if (copy_from_user(buf, user_buf, buf_size)) |
727 | return -EFAULT; | |
728 | ||
729 | buf[buf_size] = '\0'; | |
730 | if (strtobool(buf, &enable)) | |
731 | return -EINVAL; | |
732 | ||
111902f7 | 733 | if (enable == test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dbg_flags)) |
b32bba6c MH |
734 | return -EALREADY; |
735 | ||
111902f7 | 736 | change_bit(HCI_FORCE_STATIC_ADDR, &hdev->dbg_flags); |
b32bba6c MH |
737 | |
738 | return count; | |
92202185 MH |
739 | } |
740 | ||
b32bba6c MH |
741 | static const struct file_operations force_static_address_fops = { |
742 | .open = simple_open, | |
743 | .read = force_static_address_read, | |
744 | .write = force_static_address_write, | |
745 | .llseek = default_llseek, | |
746 | }; | |
92202185 | 747 | |
d2ab0ac1 MH |
748 | static int white_list_show(struct seq_file *f, void *ptr) |
749 | { | |
750 | struct hci_dev *hdev = f->private; | |
751 | struct bdaddr_list *b; | |
752 | ||
753 | hci_dev_lock(hdev); | |
754 | list_for_each_entry(b, &hdev->le_white_list, list) | |
755 | seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type); | |
756 | hci_dev_unlock(hdev); | |
757 | ||
758 | return 0; | |
759 | } | |
760 | ||
761 | static int white_list_open(struct inode *inode, struct file *file) | |
762 | { | |
763 | return single_open(file, white_list_show, inode->i_private); | |
764 | } | |
765 | ||
766 | static const struct file_operations white_list_fops = { | |
767 | .open = white_list_open, | |
768 | .read = seq_read, | |
769 | .llseek = seq_lseek, | |
770 | .release = single_release, | |
771 | }; | |
772 | ||
3698d704 MH |
773 | static int identity_resolving_keys_show(struct seq_file *f, void *ptr) |
774 | { | |
775 | struct hci_dev *hdev = f->private; | |
776 | struct list_head *p, *n; | |
777 | ||
778 | hci_dev_lock(hdev); | |
779 | list_for_each_safe(p, n, &hdev->identity_resolving_keys) { | |
780 | struct smp_irk *irk = list_entry(p, struct smp_irk, list); | |
781 | seq_printf(f, "%pMR (type %u) %*phN %pMR\n", | |
782 | &irk->bdaddr, irk->addr_type, | |
783 | 16, irk->val, &irk->rpa); | |
784 | } | |
785 | hci_dev_unlock(hdev); | |
786 | ||
787 | return 0; | |
788 | } | |
789 | ||
790 | static int identity_resolving_keys_open(struct inode *inode, struct file *file) | |
791 | { | |
792 | return single_open(file, identity_resolving_keys_show, | |
793 | inode->i_private); | |
794 | } | |
795 | ||
796 | static const struct file_operations identity_resolving_keys_fops = { | |
797 | .open = identity_resolving_keys_open, | |
798 | .read = seq_read, | |
799 | .llseek = seq_lseek, | |
800 | .release = single_release, | |
801 | }; | |
802 | ||
8f8625cd MH |
803 | static int long_term_keys_show(struct seq_file *f, void *ptr) |
804 | { | |
805 | struct hci_dev *hdev = f->private; | |
806 | struct list_head *p, *n; | |
807 | ||
808 | hci_dev_lock(hdev); | |
f813f1be | 809 | list_for_each_safe(p, n, &hdev->long_term_keys) { |
8f8625cd | 810 | struct smp_ltk *ltk = list_entry(p, struct smp_ltk, list); |
fe39c7b2 | 811 | seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n", |
8f8625cd MH |
812 | <k->bdaddr, ltk->bdaddr_type, ltk->authenticated, |
813 | ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv), | |
fe39c7b2 | 814 | __le64_to_cpu(ltk->rand), 16, ltk->val); |
8f8625cd MH |
815 | } |
816 | hci_dev_unlock(hdev); | |
817 | ||
818 | return 0; | |
819 | } | |
820 | ||
821 | static int long_term_keys_open(struct inode *inode, struct file *file) | |
822 | { | |
823 | return single_open(file, long_term_keys_show, inode->i_private); | |
824 | } | |
825 | ||
826 | static const struct file_operations long_term_keys_fops = { | |
827 | .open = long_term_keys_open, | |
828 | .read = seq_read, | |
829 | .llseek = seq_lseek, | |
830 | .release = single_release, | |
831 | }; | |
832 | ||
4e70c7e7 MH |
833 | static int conn_min_interval_set(void *data, u64 val) |
834 | { | |
835 | struct hci_dev *hdev = data; | |
836 | ||
837 | if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval) | |
838 | return -EINVAL; | |
839 | ||
840 | hci_dev_lock(hdev); | |
2be48b65 | 841 | hdev->le_conn_min_interval = val; |
4e70c7e7 MH |
842 | hci_dev_unlock(hdev); |
843 | ||
844 | return 0; | |
845 | } | |
846 | ||
847 | static int conn_min_interval_get(void *data, u64 *val) | |
848 | { | |
849 | struct hci_dev *hdev = data; | |
850 | ||
851 | hci_dev_lock(hdev); | |
852 | *val = hdev->le_conn_min_interval; | |
853 | hci_dev_unlock(hdev); | |
854 | ||
855 | return 0; | |
856 | } | |
857 | ||
858 | DEFINE_SIMPLE_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get, | |
859 | conn_min_interval_set, "%llu\n"); | |
860 | ||
861 | static int conn_max_interval_set(void *data, u64 val) | |
862 | { | |
863 | struct hci_dev *hdev = data; | |
864 | ||
865 | if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval) | |
866 | return -EINVAL; | |
867 | ||
868 | hci_dev_lock(hdev); | |
2be48b65 | 869 | hdev->le_conn_max_interval = val; |
4e70c7e7 MH |
870 | hci_dev_unlock(hdev); |
871 | ||
872 | return 0; | |
873 | } | |
874 | ||
875 | static int conn_max_interval_get(void *data, u64 *val) | |
876 | { | |
877 | struct hci_dev *hdev = data; | |
878 | ||
879 | hci_dev_lock(hdev); | |
880 | *val = hdev->le_conn_max_interval; | |
881 | hci_dev_unlock(hdev); | |
882 | ||
883 | return 0; | |
884 | } | |
885 | ||
886 | DEFINE_SIMPLE_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get, | |
887 | conn_max_interval_set, "%llu\n"); | |
888 | ||
816a93d1 MH |
889 | static int conn_latency_set(void *data, u64 val) |
890 | { | |
891 | struct hci_dev *hdev = data; | |
892 | ||
893 | if (val > 0x01f3) | |
894 | return -EINVAL; | |
895 | ||
896 | hci_dev_lock(hdev); | |
897 | hdev->le_conn_latency = val; | |
898 | hci_dev_unlock(hdev); | |
899 | ||
900 | return 0; | |
901 | } | |
902 | ||
903 | static int conn_latency_get(void *data, u64 *val) | |
904 | { | |
905 | struct hci_dev *hdev = data; | |
906 | ||
907 | hci_dev_lock(hdev); | |
908 | *val = hdev->le_conn_latency; | |
909 | hci_dev_unlock(hdev); | |
910 | ||
911 | return 0; | |
912 | } | |
913 | ||
914 | DEFINE_SIMPLE_ATTRIBUTE(conn_latency_fops, conn_latency_get, | |
915 | conn_latency_set, "%llu\n"); | |
916 | ||
f1649577 MH |
917 | static int supervision_timeout_set(void *data, u64 val) |
918 | { | |
919 | struct hci_dev *hdev = data; | |
920 | ||
921 | if (val < 0x000a || val > 0x0c80) | |
922 | return -EINVAL; | |
923 | ||
924 | hci_dev_lock(hdev); | |
925 | hdev->le_supv_timeout = val; | |
926 | hci_dev_unlock(hdev); | |
927 | ||
928 | return 0; | |
929 | } | |
930 | ||
931 | static int supervision_timeout_get(void *data, u64 *val) | |
932 | { | |
933 | struct hci_dev *hdev = data; | |
934 | ||
935 | hci_dev_lock(hdev); | |
936 | *val = hdev->le_supv_timeout; | |
937 | hci_dev_unlock(hdev); | |
938 | ||
939 | return 0; | |
940 | } | |
941 | ||
942 | DEFINE_SIMPLE_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get, | |
943 | supervision_timeout_set, "%llu\n"); | |
944 | ||
3f959d46 MH |
945 | static int adv_channel_map_set(void *data, u64 val) |
946 | { | |
947 | struct hci_dev *hdev = data; | |
948 | ||
949 | if (val < 0x01 || val > 0x07) | |
950 | return -EINVAL; | |
951 | ||
952 | hci_dev_lock(hdev); | |
953 | hdev->le_adv_channel_map = val; | |
954 | hci_dev_unlock(hdev); | |
955 | ||
956 | return 0; | |
957 | } | |
958 | ||
959 | static int adv_channel_map_get(void *data, u64 *val) | |
960 | { | |
961 | struct hci_dev *hdev = data; | |
962 | ||
963 | hci_dev_lock(hdev); | |
964 | *val = hdev->le_adv_channel_map; | |
965 | hci_dev_unlock(hdev); | |
966 | ||
967 | return 0; | |
968 | } | |
969 | ||
970 | DEFINE_SIMPLE_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get, | |
971 | adv_channel_map_set, "%llu\n"); | |
972 | ||
0b3c7d37 | 973 | static int device_list_show(struct seq_file *f, void *ptr) |
7d474e06 | 974 | { |
0b3c7d37 | 975 | struct hci_dev *hdev = f->private; |
7d474e06 AG |
976 | struct hci_conn_params *p; |
977 | ||
978 | hci_dev_lock(hdev); | |
7d474e06 | 979 | list_for_each_entry(p, &hdev->le_conn_params, list) { |
0b3c7d37 | 980 | seq_printf(f, "%pMR %u %u\n", &p->addr, p->addr_type, |
7d474e06 AG |
981 | p->auto_connect); |
982 | } | |
7d474e06 AG |
983 | hci_dev_unlock(hdev); |
984 | ||
985 | return 0; | |
986 | } | |
987 | ||
0b3c7d37 | 988 | static int device_list_open(struct inode *inode, struct file *file) |
7d474e06 | 989 | { |
0b3c7d37 | 990 | return single_open(file, device_list_show, inode->i_private); |
7d474e06 AG |
991 | } |
992 | ||
0b3c7d37 MH |
993 | static const struct file_operations device_list_fops = { |
994 | .open = device_list_open, | |
7d474e06 | 995 | .read = seq_read, |
7d474e06 AG |
996 | .llseek = seq_lseek, |
997 | .release = single_release, | |
998 | }; | |
999 | ||
1da177e4 LT |
1000 | /* ---- HCI requests ---- */ |
1001 | ||
42c6b129 | 1002 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result) |
1da177e4 | 1003 | { |
42c6b129 | 1004 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
1da177e4 LT |
1005 | |
1006 | if (hdev->req_status == HCI_REQ_PEND) { | |
1007 | hdev->req_result = result; | |
1008 | hdev->req_status = HCI_REQ_DONE; | |
1009 | wake_up_interruptible(&hdev->req_wait_q); | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
1014 | { | |
1015 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
1016 | ||
1017 | if (hdev->req_status == HCI_REQ_PEND) { | |
1018 | hdev->req_result = err; | |
1019 | hdev->req_status = HCI_REQ_CANCELED; | |
1020 | wake_up_interruptible(&hdev->req_wait_q); | |
1021 | } | |
1022 | } | |
1023 | ||
77a63e0a FW |
1024 | static struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, |
1025 | u8 event) | |
75e84b7c JH |
1026 | { |
1027 | struct hci_ev_cmd_complete *ev; | |
1028 | struct hci_event_hdr *hdr; | |
1029 | struct sk_buff *skb; | |
1030 | ||
1031 | hci_dev_lock(hdev); | |
1032 | ||
1033 | skb = hdev->recv_evt; | |
1034 | hdev->recv_evt = NULL; | |
1035 | ||
1036 | hci_dev_unlock(hdev); | |
1037 | ||
1038 | if (!skb) | |
1039 | return ERR_PTR(-ENODATA); | |
1040 | ||
1041 | if (skb->len < sizeof(*hdr)) { | |
1042 | BT_ERR("Too short HCI event"); | |
1043 | goto failed; | |
1044 | } | |
1045 | ||
1046 | hdr = (void *) skb->data; | |
1047 | skb_pull(skb, HCI_EVENT_HDR_SIZE); | |
1048 | ||
7b1abbbe JH |
1049 | if (event) { |
1050 | if (hdr->evt != event) | |
1051 | goto failed; | |
1052 | return skb; | |
1053 | } | |
1054 | ||
75e84b7c JH |
1055 | if (hdr->evt != HCI_EV_CMD_COMPLETE) { |
1056 | BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt); | |
1057 | goto failed; | |
1058 | } | |
1059 | ||
1060 | if (skb->len < sizeof(*ev)) { | |
1061 | BT_ERR("Too short cmd_complete event"); | |
1062 | goto failed; | |
1063 | } | |
1064 | ||
1065 | ev = (void *) skb->data; | |
1066 | skb_pull(skb, sizeof(*ev)); | |
1067 | ||
1068 | if (opcode == __le16_to_cpu(ev->opcode)) | |
1069 | return skb; | |
1070 | ||
1071 | BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, | |
1072 | __le16_to_cpu(ev->opcode)); | |
1073 | ||
1074 | failed: | |
1075 | kfree_skb(skb); | |
1076 | return ERR_PTR(-ENODATA); | |
1077 | } | |
1078 | ||
7b1abbbe | 1079 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
07dc93dd | 1080 | const void *param, u8 event, u32 timeout) |
75e84b7c JH |
1081 | { |
1082 | DECLARE_WAITQUEUE(wait, current); | |
1083 | struct hci_request req; | |
1084 | int err = 0; | |
1085 | ||
1086 | BT_DBG("%s", hdev->name); | |
1087 | ||
1088 | hci_req_init(&req, hdev); | |
1089 | ||
7b1abbbe | 1090 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
1091 | |
1092 | hdev->req_status = HCI_REQ_PEND; | |
1093 | ||
1094 | err = hci_req_run(&req, hci_req_sync_complete); | |
1095 | if (err < 0) | |
1096 | return ERR_PTR(err); | |
1097 | ||
1098 | add_wait_queue(&hdev->req_wait_q, &wait); | |
1099 | set_current_state(TASK_INTERRUPTIBLE); | |
1100 | ||
1101 | schedule_timeout(timeout); | |
1102 | ||
1103 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
1104 | ||
1105 | if (signal_pending(current)) | |
1106 | return ERR_PTR(-EINTR); | |
1107 | ||
1108 | switch (hdev->req_status) { | |
1109 | case HCI_REQ_DONE: | |
1110 | err = -bt_to_errno(hdev->req_result); | |
1111 | break; | |
1112 | ||
1113 | case HCI_REQ_CANCELED: | |
1114 | err = -hdev->req_result; | |
1115 | break; | |
1116 | ||
1117 | default: | |
1118 | err = -ETIMEDOUT; | |
1119 | break; | |
1120 | } | |
1121 | ||
1122 | hdev->req_status = hdev->req_result = 0; | |
1123 | ||
1124 | BT_DBG("%s end: err %d", hdev->name, err); | |
1125 | ||
1126 | if (err < 0) | |
1127 | return ERR_PTR(err); | |
1128 | ||
7b1abbbe JH |
1129 | return hci_get_cmd_complete(hdev, opcode, event); |
1130 | } | |
1131 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
1132 | ||
1133 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
07dc93dd | 1134 | const void *param, u32 timeout) |
7b1abbbe JH |
1135 | { |
1136 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
1137 | } |
1138 | EXPORT_SYMBOL(__hci_cmd_sync); | |
1139 | ||
1da177e4 | 1140 | /* Execute request and wait for completion. */ |
01178cd4 | 1141 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
1142 | void (*func)(struct hci_request *req, |
1143 | unsigned long opt), | |
01178cd4 | 1144 | unsigned long opt, __u32 timeout) |
1da177e4 | 1145 | { |
42c6b129 | 1146 | struct hci_request req; |
1da177e4 LT |
1147 | DECLARE_WAITQUEUE(wait, current); |
1148 | int err = 0; | |
1149 | ||
1150 | BT_DBG("%s start", hdev->name); | |
1151 | ||
42c6b129 JH |
1152 | hci_req_init(&req, hdev); |
1153 | ||
1da177e4 LT |
1154 | hdev->req_status = HCI_REQ_PEND; |
1155 | ||
42c6b129 | 1156 | func(&req, opt); |
53cce22d | 1157 | |
42c6b129 JH |
1158 | err = hci_req_run(&req, hci_req_sync_complete); |
1159 | if (err < 0) { | |
53cce22d | 1160 | hdev->req_status = 0; |
920c8300 AG |
1161 | |
1162 | /* ENODATA means the HCI request command queue is empty. | |
1163 | * This can happen when a request with conditionals doesn't | |
1164 | * trigger any commands to be sent. This is normal behavior | |
1165 | * and should not trigger an error return. | |
42c6b129 | 1166 | */ |
920c8300 AG |
1167 | if (err == -ENODATA) |
1168 | return 0; | |
1169 | ||
1170 | return err; | |
53cce22d JH |
1171 | } |
1172 | ||
bc4445c7 AG |
1173 | add_wait_queue(&hdev->req_wait_q, &wait); |
1174 | set_current_state(TASK_INTERRUPTIBLE); | |
1175 | ||
1da177e4 LT |
1176 | schedule_timeout(timeout); |
1177 | ||
1178 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
1179 | ||
1180 | if (signal_pending(current)) | |
1181 | return -EINTR; | |
1182 | ||
1183 | switch (hdev->req_status) { | |
1184 | case HCI_REQ_DONE: | |
e175072f | 1185 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
1186 | break; |
1187 | ||
1188 | case HCI_REQ_CANCELED: | |
1189 | err = -hdev->req_result; | |
1190 | break; | |
1191 | ||
1192 | default: | |
1193 | err = -ETIMEDOUT; | |
1194 | break; | |
3ff50b79 | 1195 | } |
1da177e4 | 1196 | |
a5040efa | 1197 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
1198 | |
1199 | BT_DBG("%s end: err %d", hdev->name, err); | |
1200 | ||
1201 | return err; | |
1202 | } | |
1203 | ||
01178cd4 | 1204 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
1205 | void (*req)(struct hci_request *req, |
1206 | unsigned long opt), | |
01178cd4 | 1207 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
1208 | { |
1209 | int ret; | |
1210 | ||
7c6a329e MH |
1211 | if (!test_bit(HCI_UP, &hdev->flags)) |
1212 | return -ENETDOWN; | |
1213 | ||
1da177e4 LT |
1214 | /* Serialize all requests */ |
1215 | hci_req_lock(hdev); | |
01178cd4 | 1216 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
1217 | hci_req_unlock(hdev); |
1218 | ||
1219 | return ret; | |
1220 | } | |
1221 | ||
42c6b129 | 1222 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 1223 | { |
42c6b129 | 1224 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
1225 | |
1226 | /* Reset device */ | |
42c6b129 JH |
1227 | set_bit(HCI_RESET, &req->hdev->flags); |
1228 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
1229 | } |
1230 | ||
42c6b129 | 1231 | static void bredr_init(struct hci_request *req) |
1da177e4 | 1232 | { |
42c6b129 | 1233 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 1234 | |
1da177e4 | 1235 | /* Read Local Supported Features */ |
42c6b129 | 1236 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 1237 | |
1143e5a6 | 1238 | /* Read Local Version */ |
42c6b129 | 1239 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
1240 | |
1241 | /* Read BD Address */ | |
42c6b129 | 1242 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
1243 | } |
1244 | ||
42c6b129 | 1245 | static void amp_init(struct hci_request *req) |
e61ef499 | 1246 | { |
42c6b129 | 1247 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 1248 | |
e61ef499 | 1249 | /* Read Local Version */ |
42c6b129 | 1250 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 1251 | |
f6996cfe MH |
1252 | /* Read Local Supported Commands */ |
1253 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
1254 | ||
1255 | /* Read Local Supported Features */ | |
1256 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
1257 | ||
6bcbc489 | 1258 | /* Read Local AMP Info */ |
42c6b129 | 1259 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
1260 | |
1261 | /* Read Data Blk size */ | |
42c6b129 | 1262 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 1263 | |
f38ba941 MH |
1264 | /* Read Flow Control Mode */ |
1265 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
1266 | ||
7528ca1c MH |
1267 | /* Read Location Data */ |
1268 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
1269 | } |
1270 | ||
42c6b129 | 1271 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 1272 | { |
42c6b129 | 1273 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
1274 | |
1275 | BT_DBG("%s %ld", hdev->name, opt); | |
1276 | ||
11778716 AE |
1277 | /* Reset */ |
1278 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 1279 | hci_reset_req(req, 0); |
11778716 | 1280 | |
e61ef499 AE |
1281 | switch (hdev->dev_type) { |
1282 | case HCI_BREDR: | |
42c6b129 | 1283 | bredr_init(req); |
e61ef499 AE |
1284 | break; |
1285 | ||
1286 | case HCI_AMP: | |
42c6b129 | 1287 | amp_init(req); |
e61ef499 AE |
1288 | break; |
1289 | ||
1290 | default: | |
1291 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
1292 | break; | |
1293 | } | |
e61ef499 AE |
1294 | } |
1295 | ||
42c6b129 | 1296 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 1297 | { |
4ca048e3 MH |
1298 | struct hci_dev *hdev = req->hdev; |
1299 | ||
2177bab5 JH |
1300 | __le16 param; |
1301 | __u8 flt_type; | |
1302 | ||
1303 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 1304 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
1305 | |
1306 | /* Read Class of Device */ | |
42c6b129 | 1307 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
1308 | |
1309 | /* Read Local Name */ | |
42c6b129 | 1310 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
1311 | |
1312 | /* Read Voice Setting */ | |
42c6b129 | 1313 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 1314 | |
b4cb9fb2 MH |
1315 | /* Read Number of Supported IAC */ |
1316 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
1317 | ||
4b836f39 MH |
1318 | /* Read Current IAC LAP */ |
1319 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
1320 | ||
2177bab5 JH |
1321 | /* Clear Event Filters */ |
1322 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 1323 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
1324 | |
1325 | /* Connection accept timeout ~20 secs */ | |
dcf4adbf | 1326 | param = cpu_to_le16(0x7d00); |
42c6b129 | 1327 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 | 1328 | |
4ca048e3 MH |
1329 | /* AVM Berlin (31), aka "BlueFRITZ!", reports version 1.2, |
1330 | * but it does not support page scan related HCI commands. | |
1331 | */ | |
1332 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) { | |
f332ec66 JH |
1333 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); |
1334 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
1335 | } | |
2177bab5 JH |
1336 | } |
1337 | ||
42c6b129 | 1338 | static void le_setup(struct hci_request *req) |
2177bab5 | 1339 | { |
c73eee91 JH |
1340 | struct hci_dev *hdev = req->hdev; |
1341 | ||
2177bab5 | 1342 | /* Read LE Buffer Size */ |
42c6b129 | 1343 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
1344 | |
1345 | /* Read LE Local Supported Features */ | |
42c6b129 | 1346 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 | 1347 | |
747d3f03 MH |
1348 | /* Read LE Supported States */ |
1349 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); | |
1350 | ||
2177bab5 | 1351 | /* Read LE White List Size */ |
42c6b129 | 1352 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 | 1353 | |
747d3f03 MH |
1354 | /* Clear LE White List */ |
1355 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); | |
c73eee91 JH |
1356 | |
1357 | /* LE-only controllers have LE implicitly enabled */ | |
1358 | if (!lmp_bredr_capable(hdev)) | |
1359 | set_bit(HCI_LE_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
1360 | } |
1361 | ||
1362 | static u8 hci_get_inquiry_mode(struct hci_dev *hdev) | |
1363 | { | |
1364 | if (lmp_ext_inq_capable(hdev)) | |
1365 | return 0x02; | |
1366 | ||
1367 | if (lmp_inq_rssi_capable(hdev)) | |
1368 | return 0x01; | |
1369 | ||
1370 | if (hdev->manufacturer == 11 && hdev->hci_rev == 0x00 && | |
1371 | hdev->lmp_subver == 0x0757) | |
1372 | return 0x01; | |
1373 | ||
1374 | if (hdev->manufacturer == 15) { | |
1375 | if (hdev->hci_rev == 0x03 && hdev->lmp_subver == 0x6963) | |
1376 | return 0x01; | |
1377 | if (hdev->hci_rev == 0x09 && hdev->lmp_subver == 0x6963) | |
1378 | return 0x01; | |
1379 | if (hdev->hci_rev == 0x00 && hdev->lmp_subver == 0x6965) | |
1380 | return 0x01; | |
1381 | } | |
1382 | ||
1383 | if (hdev->manufacturer == 31 && hdev->hci_rev == 0x2005 && | |
1384 | hdev->lmp_subver == 0x1805) | |
1385 | return 0x01; | |
1386 | ||
1387 | return 0x00; | |
1388 | } | |
1389 | ||
42c6b129 | 1390 | static void hci_setup_inquiry_mode(struct hci_request *req) |
2177bab5 JH |
1391 | { |
1392 | u8 mode; | |
1393 | ||
42c6b129 | 1394 | mode = hci_get_inquiry_mode(req->hdev); |
2177bab5 | 1395 | |
42c6b129 | 1396 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); |
2177bab5 JH |
1397 | } |
1398 | ||
42c6b129 | 1399 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 1400 | { |
42c6b129 JH |
1401 | struct hci_dev *hdev = req->hdev; |
1402 | ||
2177bab5 JH |
1403 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
1404 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
1405 | * command otherwise. | |
1406 | */ | |
1407 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
1408 | ||
1409 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
1410 | * any event mask for pre 1.2 devices. | |
1411 | */ | |
1412 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
1413 | return; | |
1414 | ||
1415 | if (lmp_bredr_capable(hdev)) { | |
1416 | events[4] |= 0x01; /* Flow Specification Complete */ | |
1417 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
1418 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
1419 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
1420 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
1421 | } else { |
1422 | /* Use a different default for LE-only devices */ | |
1423 | memset(events, 0, sizeof(events)); | |
1424 | events[0] |= 0x10; /* Disconnection Complete */ | |
c7882cbd MH |
1425 | events[1] |= 0x08; /* Read Remote Version Information Complete */ |
1426 | events[1] |= 0x20; /* Command Complete */ | |
1427 | events[1] |= 0x40; /* Command Status */ | |
1428 | events[1] |= 0x80; /* Hardware Error */ | |
1429 | events[2] |= 0x04; /* Number of Completed Packets */ | |
1430 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
0da71f1b MH |
1431 | |
1432 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { | |
1433 | events[0] |= 0x80; /* Encryption Change */ | |
1434 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
1435 | } | |
2177bab5 JH |
1436 | } |
1437 | ||
1438 | if (lmp_inq_rssi_capable(hdev)) | |
1439 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
1440 | ||
1441 | if (lmp_sniffsubr_capable(hdev)) | |
1442 | events[5] |= 0x20; /* Sniff Subrating */ | |
1443 | ||
1444 | if (lmp_pause_enc_capable(hdev)) | |
1445 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
1446 | ||
1447 | if (lmp_ext_inq_capable(hdev)) | |
1448 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
1449 | ||
1450 | if (lmp_no_flush_capable(hdev)) | |
1451 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
1452 | ||
1453 | if (lmp_lsto_capable(hdev)) | |
1454 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
1455 | ||
1456 | if (lmp_ssp_capable(hdev)) { | |
1457 | events[6] |= 0x01; /* IO Capability Request */ | |
1458 | events[6] |= 0x02; /* IO Capability Response */ | |
1459 | events[6] |= 0x04; /* User Confirmation Request */ | |
1460 | events[6] |= 0x08; /* User Passkey Request */ | |
1461 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
1462 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
1463 | events[7] |= 0x04; /* User Passkey Notification */ | |
1464 | events[7] |= 0x08; /* Keypress Notification */ | |
1465 | events[7] |= 0x10; /* Remote Host Supported | |
1466 | * Features Notification | |
1467 | */ | |
1468 | } | |
1469 | ||
1470 | if (lmp_le_capable(hdev)) | |
1471 | events[7] |= 0x20; /* LE Meta-Event */ | |
1472 | ||
42c6b129 | 1473 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
1474 | } |
1475 | ||
42c6b129 | 1476 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 1477 | { |
42c6b129 JH |
1478 | struct hci_dev *hdev = req->hdev; |
1479 | ||
2177bab5 | 1480 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 1481 | bredr_setup(req); |
56f87901 JH |
1482 | else |
1483 | clear_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
1484 | |
1485 | if (lmp_le_capable(hdev)) | |
42c6b129 | 1486 | le_setup(req); |
2177bab5 | 1487 | |
3f8e2d75 JH |
1488 | /* AVM Berlin (31), aka "BlueFRITZ!", doesn't support the read |
1489 | * local supported commands HCI command. | |
1490 | */ | |
1491 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) | |
42c6b129 | 1492 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
1493 | |
1494 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
1495 | /* When SSP is available, then the host features page |
1496 | * should also be available as well. However some | |
1497 | * controllers list the max_page as 0 as long as SSP | |
1498 | * has not been enabled. To achieve proper debugging | |
1499 | * output, force the minimum max_page to 1 at least. | |
1500 | */ | |
1501 | hdev->max_page = 0x01; | |
1502 | ||
2177bab5 JH |
1503 | if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) { |
1504 | u8 mode = 0x01; | |
42c6b129 JH |
1505 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
1506 | sizeof(mode), &mode); | |
2177bab5 JH |
1507 | } else { |
1508 | struct hci_cp_write_eir cp; | |
1509 | ||
1510 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
1511 | memset(&cp, 0, sizeof(cp)); | |
1512 | ||
42c6b129 | 1513 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
1514 | } |
1515 | } | |
1516 | ||
1517 | if (lmp_inq_rssi_capable(hdev)) | |
42c6b129 | 1518 | hci_setup_inquiry_mode(req); |
2177bab5 JH |
1519 | |
1520 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 1521 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
1522 | |
1523 | if (lmp_ext_feat_capable(hdev)) { | |
1524 | struct hci_cp_read_local_ext_features cp; | |
1525 | ||
1526 | cp.page = 0x01; | |
42c6b129 JH |
1527 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
1528 | sizeof(cp), &cp); | |
2177bab5 JH |
1529 | } |
1530 | ||
1531 | if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) { | |
1532 | u8 enable = 1; | |
42c6b129 JH |
1533 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
1534 | &enable); | |
2177bab5 JH |
1535 | } |
1536 | } | |
1537 | ||
42c6b129 | 1538 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 1539 | { |
42c6b129 | 1540 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
1541 | struct hci_cp_write_def_link_policy cp; |
1542 | u16 link_policy = 0; | |
1543 | ||
1544 | if (lmp_rswitch_capable(hdev)) | |
1545 | link_policy |= HCI_LP_RSWITCH; | |
1546 | if (lmp_hold_capable(hdev)) | |
1547 | link_policy |= HCI_LP_HOLD; | |
1548 | if (lmp_sniff_capable(hdev)) | |
1549 | link_policy |= HCI_LP_SNIFF; | |
1550 | if (lmp_park_capable(hdev)) | |
1551 | link_policy |= HCI_LP_PARK; | |
1552 | ||
1553 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 1554 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
1555 | } |
1556 | ||
42c6b129 | 1557 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 1558 | { |
42c6b129 | 1559 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
1560 | struct hci_cp_write_le_host_supported cp; |
1561 | ||
c73eee91 JH |
1562 | /* LE-only devices do not support explicit enablement */ |
1563 | if (!lmp_bredr_capable(hdev)) | |
1564 | return; | |
1565 | ||
2177bab5 JH |
1566 | memset(&cp, 0, sizeof(cp)); |
1567 | ||
1568 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { | |
1569 | cp.le = 0x01; | |
1570 | cp.simul = lmp_le_br_capable(hdev); | |
1571 | } | |
1572 | ||
1573 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
1574 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
1575 | &cp); | |
2177bab5 JH |
1576 | } |
1577 | ||
d62e6d67 JH |
1578 | static void hci_set_event_mask_page_2(struct hci_request *req) |
1579 | { | |
1580 | struct hci_dev *hdev = req->hdev; | |
1581 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
1582 | ||
1583 | /* If Connectionless Slave Broadcast master role is supported | |
1584 | * enable all necessary events for it. | |
1585 | */ | |
53b834d2 | 1586 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
1587 | events[1] |= 0x40; /* Triggered Clock Capture */ |
1588 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
1589 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
1590 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
1591 | } | |
1592 | ||
1593 | /* If Connectionless Slave Broadcast slave role is supported | |
1594 | * enable all necessary events for it. | |
1595 | */ | |
53b834d2 | 1596 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
1597 | events[2] |= 0x01; /* Synchronization Train Received */ |
1598 | events[2] |= 0x02; /* CSB Receive */ | |
1599 | events[2] |= 0x04; /* CSB Timeout */ | |
1600 | events[2] |= 0x08; /* Truncated Page Complete */ | |
1601 | } | |
1602 | ||
40c59fcb | 1603 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
cd7ca0ec | 1604 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) |
40c59fcb MH |
1605 | events[2] |= 0x80; |
1606 | ||
d62e6d67 JH |
1607 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
1608 | } | |
1609 | ||
42c6b129 | 1610 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 1611 | { |
42c6b129 | 1612 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 1613 | u8 p; |
42c6b129 | 1614 | |
0da71f1b MH |
1615 | hci_setup_event_mask(req); |
1616 | ||
b8f4e068 GP |
1617 | /* Some Broadcom based Bluetooth controllers do not support the |
1618 | * Delete Stored Link Key command. They are clearly indicating its | |
1619 | * absence in the bit mask of supported commands. | |
1620 | * | |
1621 | * Check the supported commands and only if the the command is marked | |
1622 | * as supported send it. If not supported assume that the controller | |
1623 | * does not have actual support for stored link keys which makes this | |
1624 | * command redundant anyway. | |
f9f462fa MH |
1625 | * |
1626 | * Some controllers indicate that they support handling deleting | |
1627 | * stored link keys, but they don't. The quirk lets a driver | |
1628 | * just disable this command. | |
637b4cae | 1629 | */ |
f9f462fa MH |
1630 | if (hdev->commands[6] & 0x80 && |
1631 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
59f45d57 JH |
1632 | struct hci_cp_delete_stored_link_key cp; |
1633 | ||
1634 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
1635 | cp.delete_all = 0x01; | |
1636 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
1637 | sizeof(cp), &cp); | |
1638 | } | |
1639 | ||
2177bab5 | 1640 | if (hdev->commands[5] & 0x10) |
42c6b129 | 1641 | hci_setup_link_policy(req); |
2177bab5 | 1642 | |
9193c6e8 AG |
1643 | if (lmp_le_capable(hdev)) { |
1644 | u8 events[8]; | |
1645 | ||
1646 | memset(events, 0, sizeof(events)); | |
4d6c705b MH |
1647 | events[0] = 0x0f; |
1648 | ||
1649 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) | |
1650 | events[0] |= 0x10; /* LE Long Term Key Request */ | |
662bc2e6 AG |
1651 | |
1652 | /* If controller supports the Connection Parameters Request | |
1653 | * Link Layer Procedure, enable the corresponding event. | |
1654 | */ | |
1655 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) | |
1656 | events[0] |= 0x20; /* LE Remote Connection | |
1657 | * Parameter Request | |
1658 | */ | |
1659 | ||
9193c6e8 AG |
1660 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), |
1661 | events); | |
1662 | ||
15a49cca MH |
1663 | if (hdev->commands[25] & 0x40) { |
1664 | /* Read LE Advertising Channel TX Power */ | |
1665 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); | |
1666 | } | |
1667 | ||
42c6b129 | 1668 | hci_set_le_support(req); |
9193c6e8 | 1669 | } |
d2c5d77f JH |
1670 | |
1671 | /* Read features beyond page 1 if available */ | |
1672 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
1673 | struct hci_cp_read_local_ext_features cp; | |
1674 | ||
1675 | cp.page = p; | |
1676 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
1677 | sizeof(cp), &cp); | |
1678 | } | |
2177bab5 JH |
1679 | } |
1680 | ||
5d4e7e8d JH |
1681 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
1682 | { | |
1683 | struct hci_dev *hdev = req->hdev; | |
1684 | ||
d62e6d67 JH |
1685 | /* Set event mask page 2 if the HCI command for it is supported */ |
1686 | if (hdev->commands[22] & 0x04) | |
1687 | hci_set_event_mask_page_2(req); | |
1688 | ||
5d4e7e8d | 1689 | /* Check for Synchronization Train support */ |
53b834d2 | 1690 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 1691 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
1692 | |
1693 | /* Enable Secure Connections if supported and configured */ | |
5afeac14 | 1694 | if ((lmp_sc_capable(hdev) || |
111902f7 | 1695 | test_bit(HCI_FORCE_SC, &hdev->dbg_flags)) && |
a6d0d690 MH |
1696 | test_bit(HCI_SC_ENABLED, &hdev->dev_flags)) { |
1697 | u8 support = 0x01; | |
1698 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, | |
1699 | sizeof(support), &support); | |
1700 | } | |
5d4e7e8d JH |
1701 | } |
1702 | ||
2177bab5 JH |
1703 | static int __hci_init(struct hci_dev *hdev) |
1704 | { | |
1705 | int err; | |
1706 | ||
1707 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
1708 | if (err < 0) | |
1709 | return err; | |
1710 | ||
4b4148e9 MH |
1711 | /* The Device Under Test (DUT) mode is special and available for |
1712 | * all controller types. So just create it early on. | |
1713 | */ | |
1714 | if (test_bit(HCI_SETUP, &hdev->dev_flags)) { | |
1715 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, | |
1716 | &dut_mode_fops); | |
1717 | } | |
1718 | ||
2177bab5 JH |
1719 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode |
1720 | * BR/EDR/LE type controllers. AMP controllers only need the | |
1721 | * first stage init. | |
1722 | */ | |
1723 | if (hdev->dev_type != HCI_BREDR) | |
1724 | return 0; | |
1725 | ||
1726 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); | |
1727 | if (err < 0) | |
1728 | return err; | |
1729 | ||
5d4e7e8d JH |
1730 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
1731 | if (err < 0) | |
1732 | return err; | |
1733 | ||
baf27f6e MH |
1734 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); |
1735 | if (err < 0) | |
1736 | return err; | |
1737 | ||
1738 | /* Only create debugfs entries during the initial setup | |
1739 | * phase and not every time the controller gets powered on. | |
1740 | */ | |
1741 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) | |
1742 | return 0; | |
1743 | ||
dfb826a8 MH |
1744 | debugfs_create_file("features", 0444, hdev->debugfs, hdev, |
1745 | &features_fops); | |
ceeb3bc0 MH |
1746 | debugfs_create_u16("manufacturer", 0444, hdev->debugfs, |
1747 | &hdev->manufacturer); | |
1748 | debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver); | |
1749 | debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev); | |
70afe0b8 MH |
1750 | debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev, |
1751 | &blacklist_fops); | |
6659358e JH |
1752 | debugfs_create_file("whitelist", 0444, hdev->debugfs, hdev, |
1753 | &whitelist_fops); | |
47219839 MH |
1754 | debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops); |
1755 | ||
31ad1691 AK |
1756 | debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev, |
1757 | &conn_info_min_age_fops); | |
1758 | debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev, | |
1759 | &conn_info_max_age_fops); | |
1760 | ||
baf27f6e MH |
1761 | if (lmp_bredr_capable(hdev)) { |
1762 | debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, | |
1763 | hdev, &inquiry_cache_fops); | |
02d08d15 MH |
1764 | debugfs_create_file("link_keys", 0400, hdev->debugfs, |
1765 | hdev, &link_keys_fops); | |
babdbb3c MH |
1766 | debugfs_create_file("dev_class", 0444, hdev->debugfs, |
1767 | hdev, &dev_class_fops); | |
041000b9 MH |
1768 | debugfs_create_file("voice_setting", 0444, hdev->debugfs, |
1769 | hdev, &voice_setting_fops); | |
baf27f6e MH |
1770 | } |
1771 | ||
06f5b778 | 1772 | if (lmp_ssp_capable(hdev)) { |
ebd1e33b MH |
1773 | debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs, |
1774 | hdev, &auto_accept_delay_fops); | |
5afeac14 MH |
1775 | debugfs_create_file("force_sc_support", 0644, hdev->debugfs, |
1776 | hdev, &force_sc_support_fops); | |
134c2a89 MH |
1777 | debugfs_create_file("sc_only_mode", 0444, hdev->debugfs, |
1778 | hdev, &sc_only_mode_fops); | |
06f5b778 | 1779 | } |
ebd1e33b | 1780 | |
2bfa3531 MH |
1781 | if (lmp_sniff_capable(hdev)) { |
1782 | debugfs_create_file("idle_timeout", 0644, hdev->debugfs, | |
1783 | hdev, &idle_timeout_fops); | |
1784 | debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs, | |
1785 | hdev, &sniff_min_interval_fops); | |
1786 | debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs, | |
1787 | hdev, &sniff_max_interval_fops); | |
1788 | } | |
1789 | ||
d0f729b8 | 1790 | if (lmp_le_capable(hdev)) { |
ac345813 MH |
1791 | debugfs_create_file("identity", 0400, hdev->debugfs, |
1792 | hdev, &identity_fops); | |
1793 | debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, | |
1794 | hdev, &rpa_timeout_fops); | |
7a4cd51d MH |
1795 | debugfs_create_file("random_address", 0444, hdev->debugfs, |
1796 | hdev, &random_address_fops); | |
b32bba6c MH |
1797 | debugfs_create_file("static_address", 0444, hdev->debugfs, |
1798 | hdev, &static_address_fops); | |
1799 | ||
1800 | /* For controllers with a public address, provide a debug | |
1801 | * option to force the usage of the configured static | |
1802 | * address. By default the public address is used. | |
1803 | */ | |
1804 | if (bacmp(&hdev->bdaddr, BDADDR_ANY)) | |
1805 | debugfs_create_file("force_static_address", 0644, | |
1806 | hdev->debugfs, hdev, | |
1807 | &force_static_address_fops); | |
1808 | ||
d0f729b8 MH |
1809 | debugfs_create_u8("white_list_size", 0444, hdev->debugfs, |
1810 | &hdev->le_white_list_size); | |
d2ab0ac1 MH |
1811 | debugfs_create_file("white_list", 0444, hdev->debugfs, hdev, |
1812 | &white_list_fops); | |
3698d704 MH |
1813 | debugfs_create_file("identity_resolving_keys", 0400, |
1814 | hdev->debugfs, hdev, | |
1815 | &identity_resolving_keys_fops); | |
8f8625cd MH |
1816 | debugfs_create_file("long_term_keys", 0400, hdev->debugfs, |
1817 | hdev, &long_term_keys_fops); | |
4e70c7e7 MH |
1818 | debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, |
1819 | hdev, &conn_min_interval_fops); | |
1820 | debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, | |
1821 | hdev, &conn_max_interval_fops); | |
816a93d1 MH |
1822 | debugfs_create_file("conn_latency", 0644, hdev->debugfs, |
1823 | hdev, &conn_latency_fops); | |
f1649577 MH |
1824 | debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, |
1825 | hdev, &supervision_timeout_fops); | |
3f959d46 MH |
1826 | debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, |
1827 | hdev, &adv_channel_map_fops); | |
0b3c7d37 MH |
1828 | debugfs_create_file("device_list", 0444, hdev->debugfs, hdev, |
1829 | &device_list_fops); | |
b9a7a61e LR |
1830 | debugfs_create_u16("discov_interleaved_timeout", 0644, |
1831 | hdev->debugfs, | |
1832 | &hdev->discov_interleaved_timeout); | |
d0f729b8 | 1833 | } |
e7b8fc92 | 1834 | |
baf27f6e | 1835 | return 0; |
2177bab5 JH |
1836 | } |
1837 | ||
0ebca7d6 MH |
1838 | static void hci_init0_req(struct hci_request *req, unsigned long opt) |
1839 | { | |
1840 | struct hci_dev *hdev = req->hdev; | |
1841 | ||
1842 | BT_DBG("%s %ld", hdev->name, opt); | |
1843 | ||
1844 | /* Reset */ | |
1845 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
1846 | hci_reset_req(req, 0); | |
1847 | ||
1848 | /* Read Local Version */ | |
1849 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
1850 | ||
1851 | /* Read BD Address */ | |
1852 | if (hdev->set_bdaddr) | |
1853 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); | |
1854 | } | |
1855 | ||
1856 | static int __hci_unconf_init(struct hci_dev *hdev) | |
1857 | { | |
1858 | int err; | |
1859 | ||
cc78b44b MH |
1860 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
1861 | return 0; | |
1862 | ||
0ebca7d6 MH |
1863 | err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT); |
1864 | if (err < 0) | |
1865 | return err; | |
1866 | ||
1867 | return 0; | |
1868 | } | |
1869 | ||
42c6b129 | 1870 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1871 | { |
1872 | __u8 scan = opt; | |
1873 | ||
42c6b129 | 1874 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
1875 | |
1876 | /* Inquiry and Page scans */ | |
42c6b129 | 1877 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
1878 | } |
1879 | ||
42c6b129 | 1880 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1881 | { |
1882 | __u8 auth = opt; | |
1883 | ||
42c6b129 | 1884 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
1885 | |
1886 | /* Authentication */ | |
42c6b129 | 1887 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
1888 | } |
1889 | ||
42c6b129 | 1890 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1891 | { |
1892 | __u8 encrypt = opt; | |
1893 | ||
42c6b129 | 1894 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 1895 | |
e4e8e37c | 1896 | /* Encryption */ |
42c6b129 | 1897 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
1898 | } |
1899 | ||
42c6b129 | 1900 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
1901 | { |
1902 | __le16 policy = cpu_to_le16(opt); | |
1903 | ||
42c6b129 | 1904 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
1905 | |
1906 | /* Default link policy */ | |
42c6b129 | 1907 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
1908 | } |
1909 | ||
8e87d142 | 1910 | /* Get HCI device by index. |
1da177e4 LT |
1911 | * Device is held on return. */ |
1912 | struct hci_dev *hci_dev_get(int index) | |
1913 | { | |
8035ded4 | 1914 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
1915 | |
1916 | BT_DBG("%d", index); | |
1917 | ||
1918 | if (index < 0) | |
1919 | return NULL; | |
1920 | ||
1921 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 1922 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
1923 | if (d->id == index) { |
1924 | hdev = hci_dev_hold(d); | |
1925 | break; | |
1926 | } | |
1927 | } | |
1928 | read_unlock(&hci_dev_list_lock); | |
1929 | return hdev; | |
1930 | } | |
1da177e4 LT |
1931 | |
1932 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 1933 | |
30dc78e1 JH |
1934 | bool hci_discovery_active(struct hci_dev *hdev) |
1935 | { | |
1936 | struct discovery_state *discov = &hdev->discovery; | |
1937 | ||
6fbe195d | 1938 | switch (discov->state) { |
343f935b | 1939 | case DISCOVERY_FINDING: |
6fbe195d | 1940 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
1941 | return true; |
1942 | ||
6fbe195d AG |
1943 | default: |
1944 | return false; | |
1945 | } | |
30dc78e1 JH |
1946 | } |
1947 | ||
ff9ef578 JH |
1948 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
1949 | { | |
bb3e0a33 JH |
1950 | int old_state = hdev->discovery.state; |
1951 | ||
ff9ef578 JH |
1952 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
1953 | ||
bb3e0a33 | 1954 | if (old_state == state) |
ff9ef578 JH |
1955 | return; |
1956 | ||
bb3e0a33 JH |
1957 | hdev->discovery.state = state; |
1958 | ||
ff9ef578 JH |
1959 | switch (state) { |
1960 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
1961 | hci_update_background_scan(hdev); |
1962 | ||
bb3e0a33 | 1963 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 1964 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
1965 | break; |
1966 | case DISCOVERY_STARTING: | |
1967 | break; | |
343f935b | 1968 | case DISCOVERY_FINDING: |
ff9ef578 JH |
1969 | mgmt_discovering(hdev, 1); |
1970 | break; | |
30dc78e1 JH |
1971 | case DISCOVERY_RESOLVING: |
1972 | break; | |
ff9ef578 JH |
1973 | case DISCOVERY_STOPPING: |
1974 | break; | |
1975 | } | |
ff9ef578 JH |
1976 | } |
1977 | ||
1f9b9a5d | 1978 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 1979 | { |
30883512 | 1980 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 1981 | struct inquiry_entry *p, *n; |
1da177e4 | 1982 | |
561aafbc JH |
1983 | list_for_each_entry_safe(p, n, &cache->all, all) { |
1984 | list_del(&p->all); | |
b57c1a56 | 1985 | kfree(p); |
1da177e4 | 1986 | } |
561aafbc JH |
1987 | |
1988 | INIT_LIST_HEAD(&cache->unknown); | |
1989 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
1990 | } |
1991 | ||
a8c5fb1a GP |
1992 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
1993 | bdaddr_t *bdaddr) | |
1da177e4 | 1994 | { |
30883512 | 1995 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1996 | struct inquiry_entry *e; |
1997 | ||
6ed93dc6 | 1998 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1999 | |
561aafbc JH |
2000 | list_for_each_entry(e, &cache->all, all) { |
2001 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
2002 | return e; | |
2003 | } | |
2004 | ||
2005 | return NULL; | |
2006 | } | |
2007 | ||
2008 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 2009 | bdaddr_t *bdaddr) |
561aafbc | 2010 | { |
30883512 | 2011 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
2012 | struct inquiry_entry *e; |
2013 | ||
6ed93dc6 | 2014 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
2015 | |
2016 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 2017 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
2018 | return e; |
2019 | } | |
2020 | ||
2021 | return NULL; | |
1da177e4 LT |
2022 | } |
2023 | ||
30dc78e1 | 2024 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
2025 | bdaddr_t *bdaddr, |
2026 | int state) | |
30dc78e1 JH |
2027 | { |
2028 | struct discovery_state *cache = &hdev->discovery; | |
2029 | struct inquiry_entry *e; | |
2030 | ||
6ed93dc6 | 2031 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
2032 | |
2033 | list_for_each_entry(e, &cache->resolve, list) { | |
2034 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
2035 | return e; | |
2036 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
2037 | return e; | |
2038 | } | |
2039 | ||
2040 | return NULL; | |
2041 | } | |
2042 | ||
a3d4e20a | 2043 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 2044 | struct inquiry_entry *ie) |
a3d4e20a JH |
2045 | { |
2046 | struct discovery_state *cache = &hdev->discovery; | |
2047 | struct list_head *pos = &cache->resolve; | |
2048 | struct inquiry_entry *p; | |
2049 | ||
2050 | list_del(&ie->list); | |
2051 | ||
2052 | list_for_each_entry(p, &cache->resolve, list) { | |
2053 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 2054 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
2055 | break; |
2056 | pos = &p->list; | |
2057 | } | |
2058 | ||
2059 | list_add(&ie->list, pos); | |
2060 | } | |
2061 | ||
af58925c MH |
2062 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
2063 | bool name_known) | |
1da177e4 | 2064 | { |
30883512 | 2065 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 2066 | struct inquiry_entry *ie; |
af58925c | 2067 | u32 flags = 0; |
1da177e4 | 2068 | |
6ed93dc6 | 2069 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 2070 | |
2b2fec4d SJ |
2071 | hci_remove_remote_oob_data(hdev, &data->bdaddr); |
2072 | ||
af58925c MH |
2073 | if (!data->ssp_mode) |
2074 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 2075 | |
70f23020 | 2076 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 2077 | if (ie) { |
af58925c MH |
2078 | if (!ie->data.ssp_mode) |
2079 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 2080 | |
a3d4e20a | 2081 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 2082 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
2083 | ie->data.rssi = data->rssi; |
2084 | hci_inquiry_cache_update_resolve(hdev, ie); | |
2085 | } | |
2086 | ||
561aafbc | 2087 | goto update; |
a3d4e20a | 2088 | } |
561aafbc JH |
2089 | |
2090 | /* Entry not in the cache. Add new one. */ | |
395365ea | 2091 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_KERNEL); |
af58925c MH |
2092 | if (!ie) { |
2093 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
2094 | goto done; | |
2095 | } | |
561aafbc JH |
2096 | |
2097 | list_add(&ie->all, &cache->all); | |
2098 | ||
2099 | if (name_known) { | |
2100 | ie->name_state = NAME_KNOWN; | |
2101 | } else { | |
2102 | ie->name_state = NAME_NOT_KNOWN; | |
2103 | list_add(&ie->list, &cache->unknown); | |
2104 | } | |
70f23020 | 2105 | |
561aafbc JH |
2106 | update: |
2107 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 2108 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
2109 | ie->name_state = NAME_KNOWN; |
2110 | list_del(&ie->list); | |
1da177e4 LT |
2111 | } |
2112 | ||
70f23020 AE |
2113 | memcpy(&ie->data, data, sizeof(*data)); |
2114 | ie->timestamp = jiffies; | |
1da177e4 | 2115 | cache->timestamp = jiffies; |
3175405b JH |
2116 | |
2117 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 2118 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 2119 | |
af58925c MH |
2120 | done: |
2121 | return flags; | |
1da177e4 LT |
2122 | } |
2123 | ||
2124 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
2125 | { | |
30883512 | 2126 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
2127 | struct inquiry_info *info = (struct inquiry_info *) buf; |
2128 | struct inquiry_entry *e; | |
2129 | int copied = 0; | |
2130 | ||
561aafbc | 2131 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 2132 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
2133 | |
2134 | if (copied >= num) | |
2135 | break; | |
2136 | ||
1da177e4 LT |
2137 | bacpy(&info->bdaddr, &data->bdaddr); |
2138 | info->pscan_rep_mode = data->pscan_rep_mode; | |
2139 | info->pscan_period_mode = data->pscan_period_mode; | |
2140 | info->pscan_mode = data->pscan_mode; | |
2141 | memcpy(info->dev_class, data->dev_class, 3); | |
2142 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 2143 | |
1da177e4 | 2144 | info++; |
b57c1a56 | 2145 | copied++; |
1da177e4 LT |
2146 | } |
2147 | ||
2148 | BT_DBG("cache %p, copied %d", cache, copied); | |
2149 | return copied; | |
2150 | } | |
2151 | ||
42c6b129 | 2152 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
2153 | { |
2154 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 2155 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
2156 | struct hci_cp_inquiry cp; |
2157 | ||
2158 | BT_DBG("%s", hdev->name); | |
2159 | ||
2160 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
2161 | return; | |
2162 | ||
2163 | /* Start Inquiry */ | |
2164 | memcpy(&cp.lap, &ir->lap, 3); | |
2165 | cp.length = ir->length; | |
2166 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 2167 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
2168 | } |
2169 | ||
3e13fa1e AG |
2170 | static int wait_inquiry(void *word) |
2171 | { | |
2172 | schedule(); | |
2173 | return signal_pending(current); | |
2174 | } | |
2175 | ||
1da177e4 LT |
2176 | int hci_inquiry(void __user *arg) |
2177 | { | |
2178 | __u8 __user *ptr = arg; | |
2179 | struct hci_inquiry_req ir; | |
2180 | struct hci_dev *hdev; | |
2181 | int err = 0, do_inquiry = 0, max_rsp; | |
2182 | long timeo; | |
2183 | __u8 *buf; | |
2184 | ||
2185 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
2186 | return -EFAULT; | |
2187 | ||
5a08ecce AE |
2188 | hdev = hci_dev_get(ir.dev_id); |
2189 | if (!hdev) | |
1da177e4 LT |
2190 | return -ENODEV; |
2191 | ||
0736cfa8 MH |
2192 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2193 | err = -EBUSY; | |
2194 | goto done; | |
2195 | } | |
2196 | ||
4a964404 | 2197 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
fee746b0 MH |
2198 | err = -EOPNOTSUPP; |
2199 | goto done; | |
2200 | } | |
2201 | ||
5b69bef5 MH |
2202 | if (hdev->dev_type != HCI_BREDR) { |
2203 | err = -EOPNOTSUPP; | |
2204 | goto done; | |
2205 | } | |
2206 | ||
56f87901 JH |
2207 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
2208 | err = -EOPNOTSUPP; | |
2209 | goto done; | |
2210 | } | |
2211 | ||
09fd0de5 | 2212 | hci_dev_lock(hdev); |
8e87d142 | 2213 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 2214 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 2215 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
2216 | do_inquiry = 1; |
2217 | } | |
09fd0de5 | 2218 | hci_dev_unlock(hdev); |
1da177e4 | 2219 | |
04837f64 | 2220 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
2221 | |
2222 | if (do_inquiry) { | |
01178cd4 JH |
2223 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
2224 | timeo); | |
70f23020 AE |
2225 | if (err < 0) |
2226 | goto done; | |
3e13fa1e AG |
2227 | |
2228 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
2229 | * cleared). If it is interrupted by a signal, return -EINTR. | |
2230 | */ | |
2231 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, wait_inquiry, | |
2232 | TASK_INTERRUPTIBLE)) | |
2233 | return -EINTR; | |
70f23020 | 2234 | } |
1da177e4 | 2235 | |
8fc9ced3 GP |
2236 | /* for unlimited number of responses we will use buffer with |
2237 | * 255 entries | |
2238 | */ | |
1da177e4 LT |
2239 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
2240 | ||
2241 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
2242 | * copy it to the user space. | |
2243 | */ | |
01df8c31 | 2244 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 2245 | if (!buf) { |
1da177e4 LT |
2246 | err = -ENOMEM; |
2247 | goto done; | |
2248 | } | |
2249 | ||
09fd0de5 | 2250 | hci_dev_lock(hdev); |
1da177e4 | 2251 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 2252 | hci_dev_unlock(hdev); |
1da177e4 LT |
2253 | |
2254 | BT_DBG("num_rsp %d", ir.num_rsp); | |
2255 | ||
2256 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
2257 | ptr += sizeof(ir); | |
2258 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 2259 | ir.num_rsp)) |
1da177e4 | 2260 | err = -EFAULT; |
8e87d142 | 2261 | } else |
1da177e4 LT |
2262 | err = -EFAULT; |
2263 | ||
2264 | kfree(buf); | |
2265 | ||
2266 | done: | |
2267 | hci_dev_put(hdev); | |
2268 | return err; | |
2269 | } | |
2270 | ||
cbed0ca1 | 2271 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 2272 | { |
1da177e4 LT |
2273 | int ret = 0; |
2274 | ||
1da177e4 LT |
2275 | BT_DBG("%s %p", hdev->name, hdev); |
2276 | ||
2277 | hci_req_lock(hdev); | |
2278 | ||
94324962 JH |
2279 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
2280 | ret = -ENODEV; | |
2281 | goto done; | |
2282 | } | |
2283 | ||
d603b76b MH |
2284 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
2285 | !test_bit(HCI_CONFIG, &hdev->dev_flags)) { | |
a5c8f270 MH |
2286 | /* Check for rfkill but allow the HCI setup stage to |
2287 | * proceed (which in itself doesn't cause any RF activity). | |
2288 | */ | |
2289 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags)) { | |
2290 | ret = -ERFKILL; | |
2291 | goto done; | |
2292 | } | |
2293 | ||
2294 | /* Check for valid public address or a configured static | |
2295 | * random adddress, but let the HCI setup proceed to | |
2296 | * be able to determine if there is a public address | |
2297 | * or not. | |
2298 | * | |
c6beca0e MH |
2299 | * In case of user channel usage, it is not important |
2300 | * if a public address or static random address is | |
2301 | * available. | |
2302 | * | |
a5c8f270 MH |
2303 | * This check is only valid for BR/EDR controllers |
2304 | * since AMP controllers do not have an address. | |
2305 | */ | |
c6beca0e MH |
2306 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
2307 | hdev->dev_type == HCI_BREDR && | |
a5c8f270 MH |
2308 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
2309 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
2310 | ret = -EADDRNOTAVAIL; | |
2311 | goto done; | |
2312 | } | |
611b30f7 MH |
2313 | } |
2314 | ||
1da177e4 LT |
2315 | if (test_bit(HCI_UP, &hdev->flags)) { |
2316 | ret = -EALREADY; | |
2317 | goto done; | |
2318 | } | |
2319 | ||
1da177e4 LT |
2320 | if (hdev->open(hdev)) { |
2321 | ret = -EIO; | |
2322 | goto done; | |
2323 | } | |
2324 | ||
f41c70c4 MH |
2325 | atomic_set(&hdev->cmd_cnt, 1); |
2326 | set_bit(HCI_INIT, &hdev->flags); | |
2327 | ||
af202f84 MH |
2328 | if (test_bit(HCI_SETUP, &hdev->dev_flags)) { |
2329 | if (hdev->setup) | |
2330 | ret = hdev->setup(hdev); | |
f41c70c4 | 2331 | |
af202f84 MH |
2332 | /* The transport driver can set these quirks before |
2333 | * creating the HCI device or in its setup callback. | |
2334 | * | |
2335 | * In case any of them is set, the controller has to | |
2336 | * start up as unconfigured. | |
2337 | */ | |
eb1904f4 MH |
2338 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || |
2339 | test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks)) | |
89bc22d2 | 2340 | set_bit(HCI_UNCONFIGURED, &hdev->dev_flags); |
0ebca7d6 MH |
2341 | |
2342 | /* For an unconfigured controller it is required to | |
2343 | * read at least the version information provided by | |
2344 | * the Read Local Version Information command. | |
2345 | * | |
2346 | * If the set_bdaddr driver callback is provided, then | |
2347 | * also the original Bluetooth public device address | |
2348 | * will be read using the Read BD Address command. | |
2349 | */ | |
2350 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) | |
2351 | ret = __hci_unconf_init(hdev); | |
89bc22d2 MH |
2352 | } |
2353 | ||
9713c17b MH |
2354 | if (test_bit(HCI_CONFIG, &hdev->dev_flags)) { |
2355 | /* If public address change is configured, ensure that | |
2356 | * the address gets programmed. If the driver does not | |
2357 | * support changing the public address, fail the power | |
2358 | * on procedure. | |
2359 | */ | |
2360 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
2361 | hdev->set_bdaddr) | |
24c457e2 MH |
2362 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); |
2363 | else | |
2364 | ret = -EADDRNOTAVAIL; | |
2365 | } | |
2366 | ||
f41c70c4 | 2367 | if (!ret) { |
4a964404 | 2368 | if (!test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) && |
0736cfa8 | 2369 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
f41c70c4 | 2370 | ret = __hci_init(hdev); |
1da177e4 LT |
2371 | } |
2372 | ||
f41c70c4 MH |
2373 | clear_bit(HCI_INIT, &hdev->flags); |
2374 | ||
1da177e4 LT |
2375 | if (!ret) { |
2376 | hci_dev_hold(hdev); | |
d6bfd59c | 2377 | set_bit(HCI_RPA_EXPIRED, &hdev->dev_flags); |
1da177e4 LT |
2378 | set_bit(HCI_UP, &hdev->flags); |
2379 | hci_notify(hdev, HCI_DEV_UP); | |
bb4b2a9a | 2380 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
d603b76b | 2381 | !test_bit(HCI_CONFIG, &hdev->dev_flags) && |
4a964404 | 2382 | !test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) && |
0736cfa8 | 2383 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
1514b892 | 2384 | hdev->dev_type == HCI_BREDR) { |
09fd0de5 | 2385 | hci_dev_lock(hdev); |
744cf19e | 2386 | mgmt_powered(hdev, 1); |
09fd0de5 | 2387 | hci_dev_unlock(hdev); |
56e5cb86 | 2388 | } |
8e87d142 | 2389 | } else { |
1da177e4 | 2390 | /* Init failed, cleanup */ |
3eff45ea | 2391 | flush_work(&hdev->tx_work); |
c347b765 | 2392 | flush_work(&hdev->cmd_work); |
b78752cc | 2393 | flush_work(&hdev->rx_work); |
1da177e4 LT |
2394 | |
2395 | skb_queue_purge(&hdev->cmd_q); | |
2396 | skb_queue_purge(&hdev->rx_q); | |
2397 | ||
2398 | if (hdev->flush) | |
2399 | hdev->flush(hdev); | |
2400 | ||
2401 | if (hdev->sent_cmd) { | |
2402 | kfree_skb(hdev->sent_cmd); | |
2403 | hdev->sent_cmd = NULL; | |
2404 | } | |
2405 | ||
2406 | hdev->close(hdev); | |
fee746b0 | 2407 | hdev->flags &= BIT(HCI_RAW); |
1da177e4 LT |
2408 | } |
2409 | ||
2410 | done: | |
2411 | hci_req_unlock(hdev); | |
1da177e4 LT |
2412 | return ret; |
2413 | } | |
2414 | ||
cbed0ca1 JH |
2415 | /* ---- HCI ioctl helpers ---- */ |
2416 | ||
2417 | int hci_dev_open(__u16 dev) | |
2418 | { | |
2419 | struct hci_dev *hdev; | |
2420 | int err; | |
2421 | ||
2422 | hdev = hci_dev_get(dev); | |
2423 | if (!hdev) | |
2424 | return -ENODEV; | |
2425 | ||
4a964404 | 2426 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
2427 | * up as user channel. Trying to bring them up as normal devices |
2428 | * will result into a failure. Only user channel operation is | |
2429 | * possible. | |
2430 | * | |
2431 | * When this function is called for a user channel, the flag | |
2432 | * HCI_USER_CHANNEL will be set first before attempting to | |
2433 | * open the device. | |
2434 | */ | |
4a964404 | 2435 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) && |
fee746b0 MH |
2436 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2437 | err = -EOPNOTSUPP; | |
2438 | goto done; | |
2439 | } | |
2440 | ||
e1d08f40 JH |
2441 | /* We need to ensure that no other power on/off work is pending |
2442 | * before proceeding to call hci_dev_do_open. This is | |
2443 | * particularly important if the setup procedure has not yet | |
2444 | * completed. | |
2445 | */ | |
2446 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
2447 | cancel_delayed_work(&hdev->power_off); | |
2448 | ||
a5c8f270 MH |
2449 | /* After this call it is guaranteed that the setup procedure |
2450 | * has finished. This means that error conditions like RFKILL | |
2451 | * or no valid public or static random address apply. | |
2452 | */ | |
e1d08f40 JH |
2453 | flush_workqueue(hdev->req_workqueue); |
2454 | ||
12aa4f0a MH |
2455 | /* For controllers not using the management interface and that |
2456 | * are brought up using legacy ioctl, set the HCI_PAIRABLE bit | |
2457 | * so that pairing works for them. Once the management interface | |
2458 | * is in use this bit will be cleared again and userspace has | |
2459 | * to explicitly enable it. | |
2460 | */ | |
2461 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && | |
2462 | !test_bit(HCI_MGMT, &hdev->dev_flags)) | |
2463 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
2464 | ||
cbed0ca1 JH |
2465 | err = hci_dev_do_open(hdev); |
2466 | ||
fee746b0 | 2467 | done: |
cbed0ca1 | 2468 | hci_dev_put(hdev); |
cbed0ca1 JH |
2469 | return err; |
2470 | } | |
2471 | ||
d7347f3c JH |
2472 | /* This function requires the caller holds hdev->lock */ |
2473 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) | |
2474 | { | |
2475 | struct hci_conn_params *p; | |
2476 | ||
2477 | list_for_each_entry(p, &hdev->le_conn_params, list) | |
2478 | list_del_init(&p->action); | |
2479 | ||
2480 | BT_DBG("All LE pending actions cleared"); | |
2481 | } | |
2482 | ||
1da177e4 LT |
2483 | static int hci_dev_do_close(struct hci_dev *hdev) |
2484 | { | |
2485 | BT_DBG("%s %p", hdev->name, hdev); | |
2486 | ||
78c04c0b VCG |
2487 | cancel_delayed_work(&hdev->power_off); |
2488 | ||
1da177e4 LT |
2489 | hci_req_cancel(hdev, ENODEV); |
2490 | hci_req_lock(hdev); | |
2491 | ||
2492 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
65cc2b49 | 2493 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
2494 | hci_req_unlock(hdev); |
2495 | return 0; | |
2496 | } | |
2497 | ||
3eff45ea GP |
2498 | /* Flush RX and TX works */ |
2499 | flush_work(&hdev->tx_work); | |
b78752cc | 2500 | flush_work(&hdev->rx_work); |
1da177e4 | 2501 | |
16ab91ab | 2502 | if (hdev->discov_timeout > 0) { |
e0f9309f | 2503 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 2504 | hdev->discov_timeout = 0; |
5e5282bb | 2505 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
310a3d48 | 2506 | clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
2507 | } |
2508 | ||
a8b2d5c2 | 2509 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
2510 | cancel_delayed_work(&hdev->service_cache); |
2511 | ||
7ba8b4be | 2512 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
4518bb0f JH |
2513 | |
2514 | if (test_bit(HCI_MGMT, &hdev->dev_flags)) | |
2515 | cancel_delayed_work_sync(&hdev->rpa_expired); | |
7ba8b4be | 2516 | |
09fd0de5 | 2517 | hci_dev_lock(hdev); |
1f9b9a5d | 2518 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 2519 | hci_conn_hash_flush(hdev); |
d7347f3c | 2520 | hci_pend_le_actions_clear(hdev); |
09fd0de5 | 2521 | hci_dev_unlock(hdev); |
1da177e4 LT |
2522 | |
2523 | hci_notify(hdev, HCI_DEV_DOWN); | |
2524 | ||
2525 | if (hdev->flush) | |
2526 | hdev->flush(hdev); | |
2527 | ||
2528 | /* Reset device */ | |
2529 | skb_queue_purge(&hdev->cmd_q); | |
2530 | atomic_set(&hdev->cmd_cnt, 1); | |
4a964404 MH |
2531 | if (!test_bit(HCI_AUTO_OFF, &hdev->dev_flags) && |
2532 | !test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) && | |
a6c511c6 | 2533 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 2534 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 2535 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
2536 | clear_bit(HCI_INIT, &hdev->flags); |
2537 | } | |
2538 | ||
c347b765 GP |
2539 | /* flush cmd work */ |
2540 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
2541 | |
2542 | /* Drop queues */ | |
2543 | skb_queue_purge(&hdev->rx_q); | |
2544 | skb_queue_purge(&hdev->cmd_q); | |
2545 | skb_queue_purge(&hdev->raw_q); | |
2546 | ||
2547 | /* Drop last sent command */ | |
2548 | if (hdev->sent_cmd) { | |
65cc2b49 | 2549 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
2550 | kfree_skb(hdev->sent_cmd); |
2551 | hdev->sent_cmd = NULL; | |
2552 | } | |
2553 | ||
b6ddb638 JH |
2554 | kfree_skb(hdev->recv_evt); |
2555 | hdev->recv_evt = NULL; | |
2556 | ||
1da177e4 LT |
2557 | /* After this point our queues are empty |
2558 | * and no tasks are scheduled. */ | |
2559 | hdev->close(hdev); | |
2560 | ||
35b973c9 | 2561 | /* Clear flags */ |
fee746b0 | 2562 | hdev->flags &= BIT(HCI_RAW); |
35b973c9 JH |
2563 | hdev->dev_flags &= ~HCI_PERSISTENT_MASK; |
2564 | ||
93c311a0 MH |
2565 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { |
2566 | if (hdev->dev_type == HCI_BREDR) { | |
2567 | hci_dev_lock(hdev); | |
2568 | mgmt_powered(hdev, 0); | |
2569 | hci_dev_unlock(hdev); | |
2570 | } | |
8ee56540 | 2571 | } |
5add6af8 | 2572 | |
ced5c338 | 2573 | /* Controller radio is available but is currently powered down */ |
536619e8 | 2574 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 2575 | |
e59fda8d | 2576 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 2577 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 2578 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 2579 | |
1da177e4 LT |
2580 | hci_req_unlock(hdev); |
2581 | ||
2582 | hci_dev_put(hdev); | |
2583 | return 0; | |
2584 | } | |
2585 | ||
2586 | int hci_dev_close(__u16 dev) | |
2587 | { | |
2588 | struct hci_dev *hdev; | |
2589 | int err; | |
2590 | ||
70f23020 AE |
2591 | hdev = hci_dev_get(dev); |
2592 | if (!hdev) | |
1da177e4 | 2593 | return -ENODEV; |
8ee56540 | 2594 | |
0736cfa8 MH |
2595 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2596 | err = -EBUSY; | |
2597 | goto done; | |
2598 | } | |
2599 | ||
8ee56540 MH |
2600 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
2601 | cancel_delayed_work(&hdev->power_off); | |
2602 | ||
1da177e4 | 2603 | err = hci_dev_do_close(hdev); |
8ee56540 | 2604 | |
0736cfa8 | 2605 | done: |
1da177e4 LT |
2606 | hci_dev_put(hdev); |
2607 | return err; | |
2608 | } | |
2609 | ||
2610 | int hci_dev_reset(__u16 dev) | |
2611 | { | |
2612 | struct hci_dev *hdev; | |
2613 | int ret = 0; | |
2614 | ||
70f23020 AE |
2615 | hdev = hci_dev_get(dev); |
2616 | if (!hdev) | |
1da177e4 LT |
2617 | return -ENODEV; |
2618 | ||
2619 | hci_req_lock(hdev); | |
1da177e4 | 2620 | |
808a049e MH |
2621 | if (!test_bit(HCI_UP, &hdev->flags)) { |
2622 | ret = -ENETDOWN; | |
1da177e4 | 2623 | goto done; |
808a049e | 2624 | } |
1da177e4 | 2625 | |
0736cfa8 MH |
2626 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2627 | ret = -EBUSY; | |
2628 | goto done; | |
2629 | } | |
2630 | ||
4a964404 | 2631 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
fee746b0 MH |
2632 | ret = -EOPNOTSUPP; |
2633 | goto done; | |
2634 | } | |
2635 | ||
1da177e4 LT |
2636 | /* Drop queues */ |
2637 | skb_queue_purge(&hdev->rx_q); | |
2638 | skb_queue_purge(&hdev->cmd_q); | |
2639 | ||
09fd0de5 | 2640 | hci_dev_lock(hdev); |
1f9b9a5d | 2641 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 2642 | hci_conn_hash_flush(hdev); |
09fd0de5 | 2643 | hci_dev_unlock(hdev); |
1da177e4 LT |
2644 | |
2645 | if (hdev->flush) | |
2646 | hdev->flush(hdev); | |
2647 | ||
8e87d142 | 2648 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 2649 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 | 2650 | |
fee746b0 | 2651 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
2652 | |
2653 | done: | |
1da177e4 LT |
2654 | hci_req_unlock(hdev); |
2655 | hci_dev_put(hdev); | |
2656 | return ret; | |
2657 | } | |
2658 | ||
2659 | int hci_dev_reset_stat(__u16 dev) | |
2660 | { | |
2661 | struct hci_dev *hdev; | |
2662 | int ret = 0; | |
2663 | ||
70f23020 AE |
2664 | hdev = hci_dev_get(dev); |
2665 | if (!hdev) | |
1da177e4 LT |
2666 | return -ENODEV; |
2667 | ||
0736cfa8 MH |
2668 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2669 | ret = -EBUSY; | |
2670 | goto done; | |
2671 | } | |
2672 | ||
4a964404 | 2673 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
fee746b0 MH |
2674 | ret = -EOPNOTSUPP; |
2675 | goto done; | |
2676 | } | |
2677 | ||
1da177e4 LT |
2678 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
2679 | ||
0736cfa8 | 2680 | done: |
1da177e4 | 2681 | hci_dev_put(hdev); |
1da177e4 LT |
2682 | return ret; |
2683 | } | |
2684 | ||
123abc08 JH |
2685 | static void hci_update_scan_state(struct hci_dev *hdev, u8 scan) |
2686 | { | |
bc6d2d04 | 2687 | bool conn_changed, discov_changed; |
123abc08 JH |
2688 | |
2689 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
2690 | ||
2691 | if ((scan & SCAN_PAGE)) | |
2692 | conn_changed = !test_and_set_bit(HCI_CONNECTABLE, | |
2693 | &hdev->dev_flags); | |
2694 | else | |
2695 | conn_changed = test_and_clear_bit(HCI_CONNECTABLE, | |
2696 | &hdev->dev_flags); | |
2697 | ||
bc6d2d04 JH |
2698 | if ((scan & SCAN_INQUIRY)) { |
2699 | discov_changed = !test_and_set_bit(HCI_DISCOVERABLE, | |
2700 | &hdev->dev_flags); | |
2701 | } else { | |
2702 | clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags); | |
2703 | discov_changed = test_and_clear_bit(HCI_DISCOVERABLE, | |
2704 | &hdev->dev_flags); | |
2705 | } | |
2706 | ||
123abc08 JH |
2707 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
2708 | return; | |
2709 | ||
bc6d2d04 JH |
2710 | if (conn_changed || discov_changed) { |
2711 | /* In case this was disabled through mgmt */ | |
2712 | set_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
2713 | ||
2714 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) | |
2715 | mgmt_update_adv_data(hdev); | |
2716 | ||
123abc08 | 2717 | mgmt_new_settings(hdev); |
bc6d2d04 | 2718 | } |
123abc08 JH |
2719 | } |
2720 | ||
1da177e4 LT |
2721 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
2722 | { | |
2723 | struct hci_dev *hdev; | |
2724 | struct hci_dev_req dr; | |
2725 | int err = 0; | |
2726 | ||
2727 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
2728 | return -EFAULT; | |
2729 | ||
70f23020 AE |
2730 | hdev = hci_dev_get(dr.dev_id); |
2731 | if (!hdev) | |
1da177e4 LT |
2732 | return -ENODEV; |
2733 | ||
0736cfa8 MH |
2734 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2735 | err = -EBUSY; | |
2736 | goto done; | |
2737 | } | |
2738 | ||
4a964404 | 2739 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
fee746b0 MH |
2740 | err = -EOPNOTSUPP; |
2741 | goto done; | |
2742 | } | |
2743 | ||
5b69bef5 MH |
2744 | if (hdev->dev_type != HCI_BREDR) { |
2745 | err = -EOPNOTSUPP; | |
2746 | goto done; | |
2747 | } | |
2748 | ||
56f87901 JH |
2749 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
2750 | err = -EOPNOTSUPP; | |
2751 | goto done; | |
2752 | } | |
2753 | ||
1da177e4 LT |
2754 | switch (cmd) { |
2755 | case HCISETAUTH: | |
01178cd4 JH |
2756 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
2757 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2758 | break; |
2759 | ||
2760 | case HCISETENCRYPT: | |
2761 | if (!lmp_encrypt_capable(hdev)) { | |
2762 | err = -EOPNOTSUPP; | |
2763 | break; | |
2764 | } | |
2765 | ||
2766 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
2767 | /* Auth must be enabled first */ | |
01178cd4 JH |
2768 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
2769 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2770 | if (err) |
2771 | break; | |
2772 | } | |
2773 | ||
01178cd4 JH |
2774 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
2775 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2776 | break; |
2777 | ||
2778 | case HCISETSCAN: | |
01178cd4 JH |
2779 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
2780 | HCI_INIT_TIMEOUT); | |
91a668b0 | 2781 | |
bc6d2d04 JH |
2782 | /* Ensure that the connectable and discoverable states |
2783 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 2784 | */ |
123abc08 JH |
2785 | if (!err) |
2786 | hci_update_scan_state(hdev, dr.dev_opt); | |
1da177e4 LT |
2787 | break; |
2788 | ||
1da177e4 | 2789 | case HCISETLINKPOL: |
01178cd4 JH |
2790 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
2791 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2792 | break; |
2793 | ||
2794 | case HCISETLINKMODE: | |
e4e8e37c MH |
2795 | hdev->link_mode = ((__u16) dr.dev_opt) & |
2796 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
2797 | break; | |
2798 | ||
2799 | case HCISETPTYPE: | |
2800 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
2801 | break; |
2802 | ||
2803 | case HCISETACLMTU: | |
e4e8e37c MH |
2804 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
2805 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
2806 | break; |
2807 | ||
2808 | case HCISETSCOMTU: | |
e4e8e37c MH |
2809 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
2810 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
2811 | break; |
2812 | ||
2813 | default: | |
2814 | err = -EINVAL; | |
2815 | break; | |
2816 | } | |
e4e8e37c | 2817 | |
0736cfa8 | 2818 | done: |
1da177e4 LT |
2819 | hci_dev_put(hdev); |
2820 | return err; | |
2821 | } | |
2822 | ||
2823 | int hci_get_dev_list(void __user *arg) | |
2824 | { | |
8035ded4 | 2825 | struct hci_dev *hdev; |
1da177e4 LT |
2826 | struct hci_dev_list_req *dl; |
2827 | struct hci_dev_req *dr; | |
1da177e4 LT |
2828 | int n = 0, size, err; |
2829 | __u16 dev_num; | |
2830 | ||
2831 | if (get_user(dev_num, (__u16 __user *) arg)) | |
2832 | return -EFAULT; | |
2833 | ||
2834 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
2835 | return -EINVAL; | |
2836 | ||
2837 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
2838 | ||
70f23020 AE |
2839 | dl = kzalloc(size, GFP_KERNEL); |
2840 | if (!dl) | |
1da177e4 LT |
2841 | return -ENOMEM; |
2842 | ||
2843 | dr = dl->dev_req; | |
2844 | ||
f20d09d5 | 2845 | read_lock(&hci_dev_list_lock); |
8035ded4 | 2846 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db MH |
2847 | unsigned long flags = hdev->flags; |
2848 | ||
2849 | /* When the auto-off is configured it means the transport | |
2850 | * is running, but in that case still indicate that the | |
2851 | * device is actually down. | |
2852 | */ | |
2853 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
2854 | flags &= ~BIT(HCI_UP); | |
c542a06c | 2855 | |
1da177e4 | 2856 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 2857 | (dr + n)->dev_opt = flags; |
c542a06c | 2858 | |
1da177e4 LT |
2859 | if (++n >= dev_num) |
2860 | break; | |
2861 | } | |
f20d09d5 | 2862 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2863 | |
2864 | dl->dev_num = n; | |
2865 | size = sizeof(*dl) + n * sizeof(*dr); | |
2866 | ||
2867 | err = copy_to_user(arg, dl, size); | |
2868 | kfree(dl); | |
2869 | ||
2870 | return err ? -EFAULT : 0; | |
2871 | } | |
2872 | ||
2873 | int hci_get_dev_info(void __user *arg) | |
2874 | { | |
2875 | struct hci_dev *hdev; | |
2876 | struct hci_dev_info di; | |
2e84d8db | 2877 | unsigned long flags; |
1da177e4 LT |
2878 | int err = 0; |
2879 | ||
2880 | if (copy_from_user(&di, arg, sizeof(di))) | |
2881 | return -EFAULT; | |
2882 | ||
70f23020 AE |
2883 | hdev = hci_dev_get(di.dev_id); |
2884 | if (!hdev) | |
1da177e4 LT |
2885 | return -ENODEV; |
2886 | ||
2e84d8db MH |
2887 | /* When the auto-off is configured it means the transport |
2888 | * is running, but in that case still indicate that the | |
2889 | * device is actually down. | |
2890 | */ | |
2891 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
2892 | flags = hdev->flags & ~BIT(HCI_UP); | |
2893 | else | |
2894 | flags = hdev->flags; | |
ab81cbf9 | 2895 | |
1da177e4 LT |
2896 | strcpy(di.name, hdev->name); |
2897 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 2898 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 2899 | di.flags = flags; |
1da177e4 | 2900 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
2901 | if (lmp_bredr_capable(hdev)) { |
2902 | di.acl_mtu = hdev->acl_mtu; | |
2903 | di.acl_pkts = hdev->acl_pkts; | |
2904 | di.sco_mtu = hdev->sco_mtu; | |
2905 | di.sco_pkts = hdev->sco_pkts; | |
2906 | } else { | |
2907 | di.acl_mtu = hdev->le_mtu; | |
2908 | di.acl_pkts = hdev->le_pkts; | |
2909 | di.sco_mtu = 0; | |
2910 | di.sco_pkts = 0; | |
2911 | } | |
1da177e4 LT |
2912 | di.link_policy = hdev->link_policy; |
2913 | di.link_mode = hdev->link_mode; | |
2914 | ||
2915 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
2916 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
2917 | ||
2918 | if (copy_to_user(arg, &di, sizeof(di))) | |
2919 | err = -EFAULT; | |
2920 | ||
2921 | hci_dev_put(hdev); | |
2922 | ||
2923 | return err; | |
2924 | } | |
2925 | ||
2926 | /* ---- Interface to HCI drivers ---- */ | |
2927 | ||
611b30f7 MH |
2928 | static int hci_rfkill_set_block(void *data, bool blocked) |
2929 | { | |
2930 | struct hci_dev *hdev = data; | |
2931 | ||
2932 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
2933 | ||
0736cfa8 MH |
2934 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
2935 | return -EBUSY; | |
2936 | ||
5e130367 JH |
2937 | if (blocked) { |
2938 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
d603b76b MH |
2939 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
2940 | !test_bit(HCI_CONFIG, &hdev->dev_flags)) | |
bf543036 | 2941 | hci_dev_do_close(hdev); |
5e130367 JH |
2942 | } else { |
2943 | clear_bit(HCI_RFKILLED, &hdev->dev_flags); | |
1025c04c | 2944 | } |
611b30f7 MH |
2945 | |
2946 | return 0; | |
2947 | } | |
2948 | ||
2949 | static const struct rfkill_ops hci_rfkill_ops = { | |
2950 | .set_block = hci_rfkill_set_block, | |
2951 | }; | |
2952 | ||
ab81cbf9 JH |
2953 | static void hci_power_on(struct work_struct *work) |
2954 | { | |
2955 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2956 | int err; |
ab81cbf9 JH |
2957 | |
2958 | BT_DBG("%s", hdev->name); | |
2959 | ||
cbed0ca1 | 2960 | err = hci_dev_do_open(hdev); |
96570ffc JH |
2961 | if (err < 0) { |
2962 | mgmt_set_powered_failed(hdev, err); | |
ab81cbf9 | 2963 | return; |
96570ffc | 2964 | } |
ab81cbf9 | 2965 | |
a5c8f270 MH |
2966 | /* During the HCI setup phase, a few error conditions are |
2967 | * ignored and they need to be checked now. If they are still | |
2968 | * valid, it is important to turn the device back off. | |
2969 | */ | |
2970 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags) || | |
4a964404 | 2971 | test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) || |
a5c8f270 MH |
2972 | (hdev->dev_type == HCI_BREDR && |
2973 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
2974 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
bf543036 JH |
2975 | clear_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
2976 | hci_dev_do_close(hdev); | |
2977 | } else if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { | |
19202573 JH |
2978 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2979 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2980 | } |
ab81cbf9 | 2981 | |
fee746b0 | 2982 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) { |
4a964404 MH |
2983 | /* For unconfigured devices, set the HCI_RAW flag |
2984 | * so that userspace can easily identify them. | |
4a964404 MH |
2985 | */ |
2986 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) | |
2987 | set_bit(HCI_RAW, &hdev->flags); | |
0602a8ad MH |
2988 | |
2989 | /* For fully configured devices, this will send | |
2990 | * the Index Added event. For unconfigured devices, | |
2991 | * it will send Unconfigued Index Added event. | |
2992 | * | |
2993 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
2994 | * and no event will be send. | |
2995 | */ | |
2996 | mgmt_index_added(hdev); | |
d603b76b | 2997 | } else if (test_and_clear_bit(HCI_CONFIG, &hdev->dev_flags)) { |
5ea234d3 MH |
2998 | /* When the controller is now configured, then it |
2999 | * is important to clear the HCI_RAW flag. | |
3000 | */ | |
3001 | if (!test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) | |
3002 | clear_bit(HCI_RAW, &hdev->flags); | |
3003 | ||
d603b76b MH |
3004 | /* Powering on the controller with HCI_CONFIG set only |
3005 | * happens with the transition from unconfigured to | |
3006 | * configured. This will send the Index Added event. | |
3007 | */ | |
3008 | mgmt_index_added(hdev); | |
fee746b0 | 3009 | } |
ab81cbf9 JH |
3010 | } |
3011 | ||
3012 | static void hci_power_off(struct work_struct *work) | |
3013 | { | |
3243553f | 3014 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 3015 | power_off.work); |
ab81cbf9 JH |
3016 | |
3017 | BT_DBG("%s", hdev->name); | |
3018 | ||
8ee56540 | 3019 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
3020 | } |
3021 | ||
16ab91ab JH |
3022 | static void hci_discov_off(struct work_struct *work) |
3023 | { | |
3024 | struct hci_dev *hdev; | |
16ab91ab JH |
3025 | |
3026 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
3027 | ||
3028 | BT_DBG("%s", hdev->name); | |
3029 | ||
d1967ff8 | 3030 | mgmt_discoverable_timeout(hdev); |
16ab91ab JH |
3031 | } |
3032 | ||
35f7498a | 3033 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 3034 | { |
4821002c | 3035 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 3036 | |
4821002c JH |
3037 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
3038 | list_del(&uuid->list); | |
2aeb9a1a JH |
3039 | kfree(uuid); |
3040 | } | |
2aeb9a1a JH |
3041 | } |
3042 | ||
35f7498a | 3043 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 JH |
3044 | { |
3045 | struct list_head *p, *n; | |
3046 | ||
3047 | list_for_each_safe(p, n, &hdev->link_keys) { | |
3048 | struct link_key *key; | |
3049 | ||
3050 | key = list_entry(p, struct link_key, list); | |
3051 | ||
3052 | list_del(p); | |
3053 | kfree(key); | |
3054 | } | |
55ed8ca1 JH |
3055 | } |
3056 | ||
35f7498a | 3057 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf VCG |
3058 | { |
3059 | struct smp_ltk *k, *tmp; | |
3060 | ||
3061 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
3062 | list_del(&k->list); | |
3063 | kfree(k); | |
3064 | } | |
b899efaf VCG |
3065 | } |
3066 | ||
970c4e46 JH |
3067 | void hci_smp_irks_clear(struct hci_dev *hdev) |
3068 | { | |
3069 | struct smp_irk *k, *tmp; | |
3070 | ||
3071 | list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) { | |
3072 | list_del(&k->list); | |
3073 | kfree(k); | |
3074 | } | |
3075 | } | |
3076 | ||
55ed8ca1 JH |
3077 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
3078 | { | |
8035ded4 | 3079 | struct link_key *k; |
55ed8ca1 | 3080 | |
8035ded4 | 3081 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
3082 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
3083 | return k; | |
55ed8ca1 JH |
3084 | |
3085 | return NULL; | |
3086 | } | |
3087 | ||
745c0ce3 | 3088 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 3089 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
3090 | { |
3091 | /* Legacy key */ | |
3092 | if (key_type < 0x03) | |
745c0ce3 | 3093 | return true; |
d25e28ab JH |
3094 | |
3095 | /* Debug keys are insecure so don't store them persistently */ | |
3096 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 3097 | return false; |
d25e28ab JH |
3098 | |
3099 | /* Changed combination key and there's no previous one */ | |
3100 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 3101 | return false; |
d25e28ab JH |
3102 | |
3103 | /* Security mode 3 case */ | |
3104 | if (!conn) | |
745c0ce3 | 3105 | return true; |
d25e28ab JH |
3106 | |
3107 | /* Neither local nor remote side had no-bonding as requirement */ | |
3108 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 3109 | return true; |
d25e28ab JH |
3110 | |
3111 | /* Local side had dedicated bonding as requirement */ | |
3112 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 3113 | return true; |
d25e28ab JH |
3114 | |
3115 | /* Remote side had dedicated bonding as requirement */ | |
3116 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 3117 | return true; |
d25e28ab JH |
3118 | |
3119 | /* If none of the above criteria match, then don't store the key | |
3120 | * persistently */ | |
745c0ce3 | 3121 | return false; |
d25e28ab JH |
3122 | } |
3123 | ||
98a0b845 JH |
3124 | static bool ltk_type_master(u8 type) |
3125 | { | |
d97c9fb0 | 3126 | return (type == SMP_LTK); |
98a0b845 JH |
3127 | } |
3128 | ||
fe39c7b2 | 3129 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, __le64 rand, |
98a0b845 | 3130 | bool master) |
75d262c2 | 3131 | { |
c9839a11 | 3132 | struct smp_ltk *k; |
75d262c2 | 3133 | |
c9839a11 | 3134 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
fe39c7b2 | 3135 | if (k->ediv != ediv || k->rand != rand) |
75d262c2 VCG |
3136 | continue; |
3137 | ||
98a0b845 JH |
3138 | if (ltk_type_master(k->type) != master) |
3139 | continue; | |
3140 | ||
c9839a11 | 3141 | return k; |
75d262c2 VCG |
3142 | } |
3143 | ||
3144 | return NULL; | |
3145 | } | |
75d262c2 | 3146 | |
c9839a11 | 3147 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
98a0b845 | 3148 | u8 addr_type, bool master) |
75d262c2 | 3149 | { |
c9839a11 | 3150 | struct smp_ltk *k; |
75d262c2 | 3151 | |
c9839a11 VCG |
3152 | list_for_each_entry(k, &hdev->long_term_keys, list) |
3153 | if (addr_type == k->bdaddr_type && | |
98a0b845 JH |
3154 | bacmp(bdaddr, &k->bdaddr) == 0 && |
3155 | ltk_type_master(k->type) == master) | |
75d262c2 VCG |
3156 | return k; |
3157 | ||
3158 | return NULL; | |
3159 | } | |
75d262c2 | 3160 | |
970c4e46 JH |
3161 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
3162 | { | |
3163 | struct smp_irk *irk; | |
3164 | ||
3165 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { | |
3166 | if (!bacmp(&irk->rpa, rpa)) | |
3167 | return irk; | |
3168 | } | |
3169 | ||
3170 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { | |
3171 | if (smp_irk_matches(hdev->tfm_aes, irk->val, rpa)) { | |
3172 | bacpy(&irk->rpa, rpa); | |
3173 | return irk; | |
3174 | } | |
3175 | } | |
3176 | ||
3177 | return NULL; | |
3178 | } | |
3179 | ||
3180 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3181 | u8 addr_type) | |
3182 | { | |
3183 | struct smp_irk *irk; | |
3184 | ||
6cfc9988 JH |
3185 | /* Identity Address must be public or static random */ |
3186 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
3187 | return NULL; | |
3188 | ||
970c4e46 JH |
3189 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { |
3190 | if (addr_type == irk->addr_type && | |
3191 | bacmp(bdaddr, &irk->bdaddr) == 0) | |
3192 | return irk; | |
3193 | } | |
3194 | ||
3195 | return NULL; | |
3196 | } | |
3197 | ||
567fa2aa | 3198 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
3199 | bdaddr_t *bdaddr, u8 *val, u8 type, |
3200 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
3201 | { |
3202 | struct link_key *key, *old_key; | |
745c0ce3 | 3203 | u8 old_key_type; |
55ed8ca1 JH |
3204 | |
3205 | old_key = hci_find_link_key(hdev, bdaddr); | |
3206 | if (old_key) { | |
3207 | old_key_type = old_key->type; | |
3208 | key = old_key; | |
3209 | } else { | |
12adcf3a | 3210 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 3211 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 3212 | if (!key) |
567fa2aa | 3213 | return NULL; |
55ed8ca1 JH |
3214 | list_add(&key->list, &hdev->link_keys); |
3215 | } | |
3216 | ||
6ed93dc6 | 3217 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 3218 | |
d25e28ab JH |
3219 | /* Some buggy controller combinations generate a changed |
3220 | * combination key for legacy pairing even when there's no | |
3221 | * previous key */ | |
3222 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 3223 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 3224 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
3225 | if (conn) |
3226 | conn->key_type = type; | |
3227 | } | |
d25e28ab | 3228 | |
55ed8ca1 | 3229 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 3230 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
3231 | key->pin_len = pin_len; |
3232 | ||
b6020ba0 | 3233 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 3234 | key->type = old_key_type; |
4748fed2 JH |
3235 | else |
3236 | key->type = type; | |
3237 | ||
7652ff6a JH |
3238 | if (persistent) |
3239 | *persistent = hci_persistent_key(hdev, conn, type, | |
3240 | old_key_type); | |
55ed8ca1 | 3241 | |
567fa2aa | 3242 | return key; |
55ed8ca1 JH |
3243 | } |
3244 | ||
ca9142b8 | 3245 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 3246 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 3247 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 3248 | { |
c9839a11 | 3249 | struct smp_ltk *key, *old_key; |
98a0b845 | 3250 | bool master = ltk_type_master(type); |
75d262c2 | 3251 | |
98a0b845 | 3252 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type, master); |
c9839a11 | 3253 | if (old_key) |
75d262c2 | 3254 | key = old_key; |
c9839a11 | 3255 | else { |
0a14ab41 | 3256 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 3257 | if (!key) |
ca9142b8 | 3258 | return NULL; |
c9839a11 | 3259 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
3260 | } |
3261 | ||
75d262c2 | 3262 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
3263 | key->bdaddr_type = addr_type; |
3264 | memcpy(key->val, tk, sizeof(key->val)); | |
3265 | key->authenticated = authenticated; | |
3266 | key->ediv = ediv; | |
fe39c7b2 | 3267 | key->rand = rand; |
c9839a11 VCG |
3268 | key->enc_size = enc_size; |
3269 | key->type = type; | |
75d262c2 | 3270 | |
ca9142b8 | 3271 | return key; |
75d262c2 VCG |
3272 | } |
3273 | ||
ca9142b8 JH |
3274 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
3275 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
3276 | { |
3277 | struct smp_irk *irk; | |
3278 | ||
3279 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
3280 | if (!irk) { | |
3281 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
3282 | if (!irk) | |
ca9142b8 | 3283 | return NULL; |
970c4e46 JH |
3284 | |
3285 | bacpy(&irk->bdaddr, bdaddr); | |
3286 | irk->addr_type = addr_type; | |
3287 | ||
3288 | list_add(&irk->list, &hdev->identity_resolving_keys); | |
3289 | } | |
3290 | ||
3291 | memcpy(irk->val, val, 16); | |
3292 | bacpy(&irk->rpa, rpa); | |
3293 | ||
ca9142b8 | 3294 | return irk; |
970c4e46 JH |
3295 | } |
3296 | ||
55ed8ca1 JH |
3297 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
3298 | { | |
3299 | struct link_key *key; | |
3300 | ||
3301 | key = hci_find_link_key(hdev, bdaddr); | |
3302 | if (!key) | |
3303 | return -ENOENT; | |
3304 | ||
6ed93dc6 | 3305 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 JH |
3306 | |
3307 | list_del(&key->list); | |
3308 | kfree(key); | |
3309 | ||
3310 | return 0; | |
3311 | } | |
3312 | ||
e0b2b27e | 3313 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf VCG |
3314 | { |
3315 | struct smp_ltk *k, *tmp; | |
c51ffa0b | 3316 | int removed = 0; |
b899efaf VCG |
3317 | |
3318 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
e0b2b27e | 3319 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
3320 | continue; |
3321 | ||
6ed93dc6 | 3322 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf VCG |
3323 | |
3324 | list_del(&k->list); | |
3325 | kfree(k); | |
c51ffa0b | 3326 | removed++; |
b899efaf VCG |
3327 | } |
3328 | ||
c51ffa0b | 3329 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
3330 | } |
3331 | ||
a7ec7338 JH |
3332 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
3333 | { | |
3334 | struct smp_irk *k, *tmp; | |
3335 | ||
668b7b19 | 3336 | list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
3337 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
3338 | continue; | |
3339 | ||
3340 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
3341 | ||
3342 | list_del(&k->list); | |
3343 | kfree(k); | |
3344 | } | |
3345 | } | |
3346 | ||
6bd32326 | 3347 | /* HCI command timer function */ |
65cc2b49 | 3348 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 3349 | { |
65cc2b49 MH |
3350 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
3351 | cmd_timer.work); | |
6bd32326 | 3352 | |
bda4f23a AE |
3353 | if (hdev->sent_cmd) { |
3354 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
3355 | u16 opcode = __le16_to_cpu(sent->opcode); | |
3356 | ||
3357 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
3358 | } else { | |
3359 | BT_ERR("%s command tx timeout", hdev->name); | |
3360 | } | |
3361 | ||
6bd32326 | 3362 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 3363 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
3364 | } |
3365 | ||
2763eda6 | 3366 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 3367 | bdaddr_t *bdaddr) |
2763eda6 SJ |
3368 | { |
3369 | struct oob_data *data; | |
3370 | ||
3371 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
3372 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
3373 | return data; | |
3374 | ||
3375 | return NULL; | |
3376 | } | |
3377 | ||
3378 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
3379 | { | |
3380 | struct oob_data *data; | |
3381 | ||
3382 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
3383 | if (!data) | |
3384 | return -ENOENT; | |
3385 | ||
6ed93dc6 | 3386 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
3387 | |
3388 | list_del(&data->list); | |
3389 | kfree(data); | |
3390 | ||
3391 | return 0; | |
3392 | } | |
3393 | ||
35f7498a | 3394 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
3395 | { |
3396 | struct oob_data *data, *n; | |
3397 | ||
3398 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
3399 | list_del(&data->list); | |
3400 | kfree(data); | |
3401 | } | |
2763eda6 SJ |
3402 | } |
3403 | ||
0798872e MH |
3404 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
3405 | u8 *hash, u8 *randomizer) | |
2763eda6 SJ |
3406 | { |
3407 | struct oob_data *data; | |
3408 | ||
3409 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
2763eda6 | 3410 | if (!data) { |
0a14ab41 | 3411 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
3412 | if (!data) |
3413 | return -ENOMEM; | |
3414 | ||
3415 | bacpy(&data->bdaddr, bdaddr); | |
3416 | list_add(&data->list, &hdev->remote_oob_data); | |
3417 | } | |
3418 | ||
519ca9d0 MH |
3419 | memcpy(data->hash192, hash, sizeof(data->hash192)); |
3420 | memcpy(data->randomizer192, randomizer, sizeof(data->randomizer192)); | |
2763eda6 | 3421 | |
0798872e MH |
3422 | memset(data->hash256, 0, sizeof(data->hash256)); |
3423 | memset(data->randomizer256, 0, sizeof(data->randomizer256)); | |
3424 | ||
3425 | BT_DBG("%s for %pMR", hdev->name, bdaddr); | |
3426 | ||
3427 | return 0; | |
3428 | } | |
3429 | ||
3430 | int hci_add_remote_oob_ext_data(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3431 | u8 *hash192, u8 *randomizer192, | |
3432 | u8 *hash256, u8 *randomizer256) | |
3433 | { | |
3434 | struct oob_data *data; | |
3435 | ||
3436 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
3437 | if (!data) { | |
0a14ab41 | 3438 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
0798872e MH |
3439 | if (!data) |
3440 | return -ENOMEM; | |
3441 | ||
3442 | bacpy(&data->bdaddr, bdaddr); | |
3443 | list_add(&data->list, &hdev->remote_oob_data); | |
3444 | } | |
3445 | ||
3446 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
3447 | memcpy(data->randomizer192, randomizer192, sizeof(data->randomizer192)); | |
3448 | ||
3449 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
3450 | memcpy(data->randomizer256, randomizer256, sizeof(data->randomizer256)); | |
3451 | ||
6ed93dc6 | 3452 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
3453 | |
3454 | return 0; | |
3455 | } | |
3456 | ||
dcc36c16 | 3457 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 3458 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 3459 | { |
8035ded4 | 3460 | struct bdaddr_list *b; |
b2a66aad | 3461 | |
dcc36c16 | 3462 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 3463 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 3464 | return b; |
b9ee0a78 | 3465 | } |
b2a66aad AJ |
3466 | |
3467 | return NULL; | |
3468 | } | |
3469 | ||
dcc36c16 | 3470 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad AJ |
3471 | { |
3472 | struct list_head *p, *n; | |
3473 | ||
dcc36c16 | 3474 | list_for_each_safe(p, n, bdaddr_list) { |
b9ee0a78 | 3475 | struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list); |
b2a66aad AJ |
3476 | |
3477 | list_del(p); | |
3478 | kfree(b); | |
3479 | } | |
b2a66aad AJ |
3480 | } |
3481 | ||
dcc36c16 | 3482 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
3483 | { |
3484 | struct bdaddr_list *entry; | |
b2a66aad | 3485 | |
b9ee0a78 | 3486 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
3487 | return -EBADF; |
3488 | ||
dcc36c16 | 3489 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 3490 | return -EEXIST; |
b2a66aad AJ |
3491 | |
3492 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
3493 | if (!entry) |
3494 | return -ENOMEM; | |
b2a66aad AJ |
3495 | |
3496 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 3497 | entry->bdaddr_type = type; |
b2a66aad | 3498 | |
dcc36c16 | 3499 | list_add(&entry->list, list); |
b2a66aad | 3500 | |
2a8357f2 | 3501 | return 0; |
b2a66aad AJ |
3502 | } |
3503 | ||
dcc36c16 | 3504 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
3505 | { |
3506 | struct bdaddr_list *entry; | |
b2a66aad | 3507 | |
35f7498a | 3508 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 3509 | hci_bdaddr_list_clear(list); |
35f7498a JH |
3510 | return 0; |
3511 | } | |
b2a66aad | 3512 | |
dcc36c16 | 3513 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
3514 | if (!entry) |
3515 | return -ENOENT; | |
3516 | ||
3517 | list_del(&entry->list); | |
3518 | kfree(entry); | |
3519 | ||
3520 | return 0; | |
3521 | } | |
3522 | ||
15819a70 AG |
3523 | /* This function requires the caller holds hdev->lock */ |
3524 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
3525 | bdaddr_t *addr, u8 addr_type) | |
3526 | { | |
3527 | struct hci_conn_params *params; | |
3528 | ||
738f6185 JH |
3529 | /* The conn params list only contains identity addresses */ |
3530 | if (!hci_is_identity_address(addr, addr_type)) | |
3531 | return NULL; | |
3532 | ||
15819a70 AG |
3533 | list_for_each_entry(params, &hdev->le_conn_params, list) { |
3534 | if (bacmp(¶ms->addr, addr) == 0 && | |
3535 | params->addr_type == addr_type) { | |
3536 | return params; | |
3537 | } | |
3538 | } | |
3539 | ||
3540 | return NULL; | |
3541 | } | |
3542 | ||
cef952ce AG |
3543 | static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type) |
3544 | { | |
3545 | struct hci_conn *conn; | |
3546 | ||
3547 | conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr); | |
3548 | if (!conn) | |
3549 | return false; | |
3550 | ||
3551 | if (conn->dst_type != type) | |
3552 | return false; | |
3553 | ||
3554 | if (conn->state != BT_CONNECTED) | |
3555 | return false; | |
3556 | ||
3557 | return true; | |
3558 | } | |
3559 | ||
4b10966f | 3560 | /* This function requires the caller holds hdev->lock */ |
501f8827 JH |
3561 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
3562 | bdaddr_t *addr, u8 addr_type) | |
4b10966f | 3563 | { |
912b42ef | 3564 | struct hci_conn_params *param; |
4b10966f | 3565 | |
738f6185 JH |
3566 | /* The list only contains identity addresses */ |
3567 | if (!hci_is_identity_address(addr, addr_type)) | |
3568 | return NULL; | |
3569 | ||
501f8827 | 3570 | list_for_each_entry(param, list, action) { |
912b42ef JH |
3571 | if (bacmp(¶m->addr, addr) == 0 && |
3572 | param->addr_type == addr_type) | |
3573 | return param; | |
4b10966f MH |
3574 | } |
3575 | ||
3576 | return NULL; | |
3577 | } | |
3578 | ||
3579 | /* This function requires the caller holds hdev->lock */ | |
51d167c0 MH |
3580 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
3581 | bdaddr_t *addr, u8 addr_type) | |
bf5b3c8b MH |
3582 | { |
3583 | struct hci_conn_params *params; | |
3584 | ||
c46245b3 | 3585 | if (!hci_is_identity_address(addr, addr_type)) |
51d167c0 | 3586 | return NULL; |
bf5b3c8b MH |
3587 | |
3588 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
3589 | if (params) | |
51d167c0 | 3590 | return params; |
bf5b3c8b MH |
3591 | |
3592 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
3593 | if (!params) { | |
3594 | BT_ERR("Out of memory"); | |
51d167c0 | 3595 | return NULL; |
bf5b3c8b MH |
3596 | } |
3597 | ||
3598 | bacpy(¶ms->addr, addr); | |
3599 | params->addr_type = addr_type; | |
3600 | ||
3601 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 3602 | INIT_LIST_HEAD(¶ms->action); |
bf5b3c8b MH |
3603 | |
3604 | params->conn_min_interval = hdev->le_conn_min_interval; | |
3605 | params->conn_max_interval = hdev->le_conn_max_interval; | |
3606 | params->conn_latency = hdev->le_conn_latency; | |
3607 | params->supervision_timeout = hdev->le_supv_timeout; | |
3608 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
3609 | ||
3610 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
3611 | ||
51d167c0 | 3612 | return params; |
bf5b3c8b MH |
3613 | } |
3614 | ||
3615 | /* This function requires the caller holds hdev->lock */ | |
3616 | int hci_conn_params_set(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type, | |
d06b50ce | 3617 | u8 auto_connect) |
15819a70 AG |
3618 | { |
3619 | struct hci_conn_params *params; | |
3620 | ||
8c87aae1 MH |
3621 | params = hci_conn_params_add(hdev, addr, addr_type); |
3622 | if (!params) | |
3623 | return -EIO; | |
cef952ce | 3624 | |
42ce26de JH |
3625 | if (params->auto_connect == auto_connect) |
3626 | return 0; | |
3627 | ||
95305baa | 3628 | list_del_init(¶ms->action); |
15819a70 | 3629 | |
cef952ce AG |
3630 | switch (auto_connect) { |
3631 | case HCI_AUTO_CONN_DISABLED: | |
3632 | case HCI_AUTO_CONN_LINK_LOSS: | |
95305baa | 3633 | hci_update_background_scan(hdev); |
cef952ce | 3634 | break; |
851efca8 | 3635 | case HCI_AUTO_CONN_REPORT: |
95305baa JH |
3636 | list_add(¶ms->action, &hdev->pend_le_reports); |
3637 | hci_update_background_scan(hdev); | |
851efca8 | 3638 | break; |
cef952ce | 3639 | case HCI_AUTO_CONN_ALWAYS: |
95305baa JH |
3640 | if (!is_connected(hdev, addr, addr_type)) { |
3641 | list_add(¶ms->action, &hdev->pend_le_conns); | |
3642 | hci_update_background_scan(hdev); | |
3643 | } | |
cef952ce AG |
3644 | break; |
3645 | } | |
15819a70 | 3646 | |
851efca8 JH |
3647 | params->auto_connect = auto_connect; |
3648 | ||
d06b50ce MH |
3649 | BT_DBG("addr %pMR (type %u) auto_connect %u", addr, addr_type, |
3650 | auto_connect); | |
a9b0a04c AG |
3651 | |
3652 | return 0; | |
15819a70 AG |
3653 | } |
3654 | ||
3655 | /* This function requires the caller holds hdev->lock */ | |
3656 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
3657 | { | |
3658 | struct hci_conn_params *params; | |
3659 | ||
3660 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
3661 | if (!params) | |
3662 | return; | |
3663 | ||
95305baa | 3664 | list_del(¶ms->action); |
15819a70 AG |
3665 | list_del(¶ms->list); |
3666 | kfree(params); | |
3667 | ||
95305baa JH |
3668 | hci_update_background_scan(hdev); |
3669 | ||
15819a70 AG |
3670 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
3671 | } | |
3672 | ||
55af49a8 JH |
3673 | /* This function requires the caller holds hdev->lock */ |
3674 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) | |
3675 | { | |
3676 | struct hci_conn_params *params, *tmp; | |
3677 | ||
3678 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
3679 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) | |
3680 | continue; | |
3681 | list_del(¶ms->list); | |
3682 | kfree(params); | |
3683 | } | |
3684 | ||
3685 | BT_DBG("All LE disabled connection parameters were removed"); | |
3686 | } | |
3687 | ||
15819a70 | 3688 | /* This function requires the caller holds hdev->lock */ |
373110c5 | 3689 | void hci_conn_params_clear_all(struct hci_dev *hdev) |
15819a70 AG |
3690 | { |
3691 | struct hci_conn_params *params, *tmp; | |
3692 | ||
3693 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
a2f41a8f | 3694 | list_del(¶ms->action); |
15819a70 AG |
3695 | list_del(¶ms->list); |
3696 | kfree(params); | |
3697 | } | |
3698 | ||
a2f41a8f | 3699 | hci_update_background_scan(hdev); |
1089b67d | 3700 | |
15819a70 AG |
3701 | BT_DBG("All LE connection parameters were removed"); |
3702 | } | |
3703 | ||
4c87eaab | 3704 | static void inquiry_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 3705 | { |
4c87eaab AG |
3706 | if (status) { |
3707 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 3708 | |
4c87eaab AG |
3709 | hci_dev_lock(hdev); |
3710 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3711 | hci_dev_unlock(hdev); | |
3712 | return; | |
3713 | } | |
7ba8b4be AG |
3714 | } |
3715 | ||
4c87eaab | 3716 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 3717 | { |
4c87eaab AG |
3718 | /* General inquiry access code (GIAC) */ |
3719 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
3720 | struct hci_request req; | |
3721 | struct hci_cp_inquiry cp; | |
7ba8b4be AG |
3722 | int err; |
3723 | ||
4c87eaab AG |
3724 | if (status) { |
3725 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
3726 | return; | |
3727 | } | |
7ba8b4be | 3728 | |
4c87eaab AG |
3729 | switch (hdev->discovery.type) { |
3730 | case DISCOV_TYPE_LE: | |
3731 | hci_dev_lock(hdev); | |
3732 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3733 | hci_dev_unlock(hdev); | |
3734 | break; | |
7ba8b4be | 3735 | |
4c87eaab AG |
3736 | case DISCOV_TYPE_INTERLEAVED: |
3737 | hci_req_init(&req, hdev); | |
7ba8b4be | 3738 | |
4c87eaab AG |
3739 | memset(&cp, 0, sizeof(cp)); |
3740 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
3741 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
3742 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
7ba8b4be | 3743 | |
4c87eaab | 3744 | hci_dev_lock(hdev); |
7dbfac1d | 3745 | |
4c87eaab | 3746 | hci_inquiry_cache_flush(hdev); |
7dbfac1d | 3747 | |
4c87eaab AG |
3748 | err = hci_req_run(&req, inquiry_complete); |
3749 | if (err) { | |
3750 | BT_ERR("Inquiry request failed: err %d", err); | |
3751 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3752 | } | |
7dbfac1d | 3753 | |
4c87eaab AG |
3754 | hci_dev_unlock(hdev); |
3755 | break; | |
7dbfac1d | 3756 | } |
7dbfac1d AG |
3757 | } |
3758 | ||
7ba8b4be AG |
3759 | static void le_scan_disable_work(struct work_struct *work) |
3760 | { | |
3761 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 3762 | le_scan_disable.work); |
4c87eaab AG |
3763 | struct hci_request req; |
3764 | int err; | |
7ba8b4be AG |
3765 | |
3766 | BT_DBG("%s", hdev->name); | |
3767 | ||
4c87eaab | 3768 | hci_req_init(&req, hdev); |
28b75a89 | 3769 | |
b1efcc28 | 3770 | hci_req_add_le_scan_disable(&req); |
28b75a89 | 3771 | |
4c87eaab AG |
3772 | err = hci_req_run(&req, le_scan_disable_work_complete); |
3773 | if (err) | |
3774 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
3775 | } |
3776 | ||
8d97250e JH |
3777 | static void set_random_addr(struct hci_request *req, bdaddr_t *rpa) |
3778 | { | |
3779 | struct hci_dev *hdev = req->hdev; | |
3780 | ||
3781 | /* If we're advertising or initiating an LE connection we can't | |
3782 | * go ahead and change the random address at this time. This is | |
3783 | * because the eventual initiator address used for the | |
3784 | * subsequently created connection will be undefined (some | |
3785 | * controllers use the new address and others the one we had | |
3786 | * when the operation started). | |
3787 | * | |
3788 | * In this kind of scenario skip the update and let the random | |
3789 | * address be updated at the next cycle. | |
3790 | */ | |
5ce194c4 | 3791 | if (test_bit(HCI_LE_ADV, &hdev->dev_flags) || |
8d97250e JH |
3792 | hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT)) { |
3793 | BT_DBG("Deferring random address update"); | |
3794 | return; | |
3795 | } | |
3796 | ||
3797 | hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, rpa); | |
3798 | } | |
3799 | ||
94b1fc92 MH |
3800 | int hci_update_random_address(struct hci_request *req, bool require_privacy, |
3801 | u8 *own_addr_type) | |
ebd3a747 JH |
3802 | { |
3803 | struct hci_dev *hdev = req->hdev; | |
3804 | int err; | |
3805 | ||
3806 | /* If privacy is enabled use a resolvable private address. If | |
2b5224dc MH |
3807 | * current RPA has expired or there is something else than |
3808 | * the current RPA in use, then generate a new one. | |
ebd3a747 JH |
3809 | */ |
3810 | if (test_bit(HCI_PRIVACY, &hdev->dev_flags)) { | |
ebd3a747 JH |
3811 | int to; |
3812 | ||
3813 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
3814 | ||
3815 | if (!test_and_clear_bit(HCI_RPA_EXPIRED, &hdev->dev_flags) && | |
2b5224dc | 3816 | !bacmp(&hdev->random_addr, &hdev->rpa)) |
ebd3a747 JH |
3817 | return 0; |
3818 | ||
2b5224dc | 3819 | err = smp_generate_rpa(hdev->tfm_aes, hdev->irk, &hdev->rpa); |
ebd3a747 JH |
3820 | if (err < 0) { |
3821 | BT_ERR("%s failed to generate new RPA", hdev->name); | |
3822 | return err; | |
3823 | } | |
3824 | ||
8d97250e | 3825 | set_random_addr(req, &hdev->rpa); |
ebd3a747 JH |
3826 | |
3827 | to = msecs_to_jiffies(hdev->rpa_timeout * 1000); | |
3828 | queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, to); | |
3829 | ||
3830 | return 0; | |
94b1fc92 MH |
3831 | } |
3832 | ||
3833 | /* In case of required privacy without resolvable private address, | |
3834 | * use an unresolvable private address. This is useful for active | |
3835 | * scanning and non-connectable advertising. | |
3836 | */ | |
3837 | if (require_privacy) { | |
3838 | bdaddr_t urpa; | |
3839 | ||
3840 | get_random_bytes(&urpa, 6); | |
3841 | urpa.b[5] &= 0x3f; /* Clear two most significant bits */ | |
3842 | ||
3843 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
8d97250e | 3844 | set_random_addr(req, &urpa); |
94b1fc92 | 3845 | return 0; |
ebd3a747 JH |
3846 | } |
3847 | ||
3848 | /* If forcing static address is in use or there is no public | |
3849 | * address use the static address as random address (but skip | |
3850 | * the HCI command if the current random address is already the | |
3851 | * static one. | |
3852 | */ | |
111902f7 | 3853 | if (test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dbg_flags) || |
ebd3a747 JH |
3854 | !bacmp(&hdev->bdaddr, BDADDR_ANY)) { |
3855 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
3856 | if (bacmp(&hdev->static_addr, &hdev->random_addr)) | |
3857 | hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, | |
3858 | &hdev->static_addr); | |
3859 | return 0; | |
3860 | } | |
3861 | ||
3862 | /* Neither privacy nor static address is being used so use a | |
3863 | * public address. | |
3864 | */ | |
3865 | *own_addr_type = ADDR_LE_DEV_PUBLIC; | |
3866 | ||
3867 | return 0; | |
3868 | } | |
3869 | ||
a1f4c318 JH |
3870 | /* Copy the Identity Address of the controller. |
3871 | * | |
3872 | * If the controller has a public BD_ADDR, then by default use that one. | |
3873 | * If this is a LE only controller without a public address, default to | |
3874 | * the static random address. | |
3875 | * | |
3876 | * For debugging purposes it is possible to force controllers with a | |
3877 | * public address to use the static random address instead. | |
3878 | */ | |
3879 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3880 | u8 *bdaddr_type) | |
3881 | { | |
111902f7 | 3882 | if (test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dbg_flags) || |
a1f4c318 JH |
3883 | !bacmp(&hdev->bdaddr, BDADDR_ANY)) { |
3884 | bacpy(bdaddr, &hdev->static_addr); | |
3885 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
3886 | } else { | |
3887 | bacpy(bdaddr, &hdev->bdaddr); | |
3888 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
3889 | } | |
3890 | } | |
3891 | ||
9be0dab7 DH |
3892 | /* Alloc HCI device */ |
3893 | struct hci_dev *hci_alloc_dev(void) | |
3894 | { | |
3895 | struct hci_dev *hdev; | |
3896 | ||
3897 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); | |
3898 | if (!hdev) | |
3899 | return NULL; | |
3900 | ||
b1b813d4 DH |
3901 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
3902 | hdev->esco_type = (ESCO_HV1); | |
3903 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
3904 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
3905 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 3906 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
3907 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
3908 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 3909 | |
b1b813d4 DH |
3910 | hdev->sniff_max_interval = 800; |
3911 | hdev->sniff_min_interval = 80; | |
3912 | ||
3f959d46 | 3913 | hdev->le_adv_channel_map = 0x07; |
bef64738 MH |
3914 | hdev->le_scan_interval = 0x0060; |
3915 | hdev->le_scan_window = 0x0030; | |
4e70c7e7 MH |
3916 | hdev->le_conn_min_interval = 0x0028; |
3917 | hdev->le_conn_max_interval = 0x0038; | |
04fb7d90 MH |
3918 | hdev->le_conn_latency = 0x0000; |
3919 | hdev->le_supv_timeout = 0x002a; | |
bef64738 | 3920 | |
d6bfd59c | 3921 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 3922 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
3923 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
3924 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
d6bfd59c | 3925 | |
b1b813d4 DH |
3926 | mutex_init(&hdev->lock); |
3927 | mutex_init(&hdev->req_lock); | |
3928 | ||
3929 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
3930 | INIT_LIST_HEAD(&hdev->blacklist); | |
6659358e | 3931 | INIT_LIST_HEAD(&hdev->whitelist); |
b1b813d4 DH |
3932 | INIT_LIST_HEAD(&hdev->uuids); |
3933 | INIT_LIST_HEAD(&hdev->link_keys); | |
3934 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 3935 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 3936 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
d2ab0ac1 | 3937 | INIT_LIST_HEAD(&hdev->le_white_list); |
15819a70 | 3938 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 3939 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 3940 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 3941 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
3942 | |
3943 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
3944 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
3945 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
3946 | INIT_WORK(&hdev->power_on, hci_power_on); | |
b1b813d4 | 3947 | |
b1b813d4 DH |
3948 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
3949 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
3950 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
3951 | ||
b1b813d4 DH |
3952 | skb_queue_head_init(&hdev->rx_q); |
3953 | skb_queue_head_init(&hdev->cmd_q); | |
3954 | skb_queue_head_init(&hdev->raw_q); | |
3955 | ||
3956 | init_waitqueue_head(&hdev->req_wait_q); | |
3957 | ||
65cc2b49 | 3958 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
b1b813d4 | 3959 | |
b1b813d4 DH |
3960 | hci_init_sysfs(hdev); |
3961 | discovery_init(hdev); | |
9be0dab7 DH |
3962 | |
3963 | return hdev; | |
3964 | } | |
3965 | EXPORT_SYMBOL(hci_alloc_dev); | |
3966 | ||
3967 | /* Free HCI device */ | |
3968 | void hci_free_dev(struct hci_dev *hdev) | |
3969 | { | |
9be0dab7 DH |
3970 | /* will free via device release */ |
3971 | put_device(&hdev->dev); | |
3972 | } | |
3973 | EXPORT_SYMBOL(hci_free_dev); | |
3974 | ||
1da177e4 LT |
3975 | /* Register HCI device */ |
3976 | int hci_register_dev(struct hci_dev *hdev) | |
3977 | { | |
b1b813d4 | 3978 | int id, error; |
1da177e4 | 3979 | |
74292d5a | 3980 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
3981 | return -EINVAL; |
3982 | ||
08add513 MM |
3983 | /* Do not allow HCI_AMP devices to register at index 0, |
3984 | * so the index can be used as the AMP controller ID. | |
3985 | */ | |
3df92b31 SL |
3986 | switch (hdev->dev_type) { |
3987 | case HCI_BREDR: | |
3988 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
3989 | break; | |
3990 | case HCI_AMP: | |
3991 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3992 | break; | |
3993 | default: | |
3994 | return -EINVAL; | |
1da177e4 | 3995 | } |
8e87d142 | 3996 | |
3df92b31 SL |
3997 | if (id < 0) |
3998 | return id; | |
3999 | ||
1da177e4 LT |
4000 | sprintf(hdev->name, "hci%d", id); |
4001 | hdev->id = id; | |
2d8b3a11 AE |
4002 | |
4003 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
4004 | ||
d8537548 KC |
4005 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
4006 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
4007 | if (!hdev->workqueue) { |
4008 | error = -ENOMEM; | |
4009 | goto err; | |
4010 | } | |
f48fd9c8 | 4011 | |
d8537548 KC |
4012 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
4013 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
4014 | if (!hdev->req_workqueue) { |
4015 | destroy_workqueue(hdev->workqueue); | |
4016 | error = -ENOMEM; | |
4017 | goto err; | |
4018 | } | |
4019 | ||
0153e2ec MH |
4020 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
4021 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
4022 | ||
bdc3e0f1 MH |
4023 | dev_set_name(&hdev->dev, "%s", hdev->name); |
4024 | ||
99780a7b JH |
4025 | hdev->tfm_aes = crypto_alloc_blkcipher("ecb(aes)", 0, |
4026 | CRYPTO_ALG_ASYNC); | |
4027 | if (IS_ERR(hdev->tfm_aes)) { | |
4028 | BT_ERR("Unable to create crypto context"); | |
4029 | error = PTR_ERR(hdev->tfm_aes); | |
4030 | hdev->tfm_aes = NULL; | |
4031 | goto err_wqueue; | |
4032 | } | |
4033 | ||
bdc3e0f1 | 4034 | error = device_add(&hdev->dev); |
33ca954d | 4035 | if (error < 0) |
99780a7b | 4036 | goto err_tfm; |
1da177e4 | 4037 | |
611b30f7 | 4038 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
4039 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
4040 | hdev); | |
611b30f7 MH |
4041 | if (hdev->rfkill) { |
4042 | if (rfkill_register(hdev->rfkill) < 0) { | |
4043 | rfkill_destroy(hdev->rfkill); | |
4044 | hdev->rfkill = NULL; | |
4045 | } | |
4046 | } | |
4047 | ||
5e130367 JH |
4048 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
4049 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
4050 | ||
a8b2d5c2 | 4051 | set_bit(HCI_SETUP, &hdev->dev_flags); |
004b0258 | 4052 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
ce2be9ac | 4053 | |
01cd3404 | 4054 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
4055 | /* Assume BR/EDR support until proven otherwise (such as |
4056 | * through reading supported features during init. | |
4057 | */ | |
4058 | set_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
4059 | } | |
ce2be9ac | 4060 | |
fcee3377 GP |
4061 | write_lock(&hci_dev_list_lock); |
4062 | list_add(&hdev->list, &hci_dev_list); | |
4063 | write_unlock(&hci_dev_list_lock); | |
4064 | ||
4a964404 MH |
4065 | /* Devices that are marked for raw-only usage are unconfigured |
4066 | * and should not be included in normal operation. | |
fee746b0 MH |
4067 | */ |
4068 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
4a964404 | 4069 | set_bit(HCI_UNCONFIGURED, &hdev->dev_flags); |
fee746b0 | 4070 | |
1da177e4 | 4071 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 4072 | hci_dev_hold(hdev); |
1da177e4 | 4073 | |
19202573 | 4074 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 4075 | |
1da177e4 | 4076 | return id; |
f48fd9c8 | 4077 | |
99780a7b JH |
4078 | err_tfm: |
4079 | crypto_free_blkcipher(hdev->tfm_aes); | |
33ca954d DH |
4080 | err_wqueue: |
4081 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 4082 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 4083 | err: |
3df92b31 | 4084 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 4085 | |
33ca954d | 4086 | return error; |
1da177e4 LT |
4087 | } |
4088 | EXPORT_SYMBOL(hci_register_dev); | |
4089 | ||
4090 | /* Unregister HCI device */ | |
59735631 | 4091 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 4092 | { |
3df92b31 | 4093 | int i, id; |
ef222013 | 4094 | |
c13854ce | 4095 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 4096 | |
94324962 JH |
4097 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
4098 | ||
3df92b31 SL |
4099 | id = hdev->id; |
4100 | ||
f20d09d5 | 4101 | write_lock(&hci_dev_list_lock); |
1da177e4 | 4102 | list_del(&hdev->list); |
f20d09d5 | 4103 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
4104 | |
4105 | hci_dev_do_close(hdev); | |
4106 | ||
cd4c5391 | 4107 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
4108 | kfree_skb(hdev->reassembly[i]); |
4109 | ||
b9b5ef18 GP |
4110 | cancel_work_sync(&hdev->power_on); |
4111 | ||
ab81cbf9 | 4112 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d603b76b MH |
4113 | !test_bit(HCI_SETUP, &hdev->dev_flags) && |
4114 | !test_bit(HCI_CONFIG, &hdev->dev_flags)) { | |
09fd0de5 | 4115 | hci_dev_lock(hdev); |
744cf19e | 4116 | mgmt_index_removed(hdev); |
09fd0de5 | 4117 | hci_dev_unlock(hdev); |
56e5cb86 | 4118 | } |
ab81cbf9 | 4119 | |
2e58ef3e JH |
4120 | /* mgmt_index_removed should take care of emptying the |
4121 | * pending list */ | |
4122 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
4123 | ||
1da177e4 LT |
4124 | hci_notify(hdev, HCI_DEV_UNREG); |
4125 | ||
611b30f7 MH |
4126 | if (hdev->rfkill) { |
4127 | rfkill_unregister(hdev->rfkill); | |
4128 | rfkill_destroy(hdev->rfkill); | |
4129 | } | |
4130 | ||
99780a7b JH |
4131 | if (hdev->tfm_aes) |
4132 | crypto_free_blkcipher(hdev->tfm_aes); | |
4133 | ||
bdc3e0f1 | 4134 | device_del(&hdev->dev); |
147e2d59 | 4135 | |
0153e2ec MH |
4136 | debugfs_remove_recursive(hdev->debugfs); |
4137 | ||
f48fd9c8 | 4138 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 4139 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 4140 | |
09fd0de5 | 4141 | hci_dev_lock(hdev); |
dcc36c16 | 4142 | hci_bdaddr_list_clear(&hdev->blacklist); |
6659358e | 4143 | hci_bdaddr_list_clear(&hdev->whitelist); |
2aeb9a1a | 4144 | hci_uuids_clear(hdev); |
55ed8ca1 | 4145 | hci_link_keys_clear(hdev); |
b899efaf | 4146 | hci_smp_ltks_clear(hdev); |
970c4e46 | 4147 | hci_smp_irks_clear(hdev); |
2763eda6 | 4148 | hci_remote_oob_data_clear(hdev); |
dcc36c16 | 4149 | hci_bdaddr_list_clear(&hdev->le_white_list); |
373110c5 | 4150 | hci_conn_params_clear_all(hdev); |
09fd0de5 | 4151 | hci_dev_unlock(hdev); |
e2e0cacb | 4152 | |
dc946bd8 | 4153 | hci_dev_put(hdev); |
3df92b31 SL |
4154 | |
4155 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
4156 | } |
4157 | EXPORT_SYMBOL(hci_unregister_dev); | |
4158 | ||
4159 | /* Suspend HCI device */ | |
4160 | int hci_suspend_dev(struct hci_dev *hdev) | |
4161 | { | |
4162 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
4163 | return 0; | |
4164 | } | |
4165 | EXPORT_SYMBOL(hci_suspend_dev); | |
4166 | ||
4167 | /* Resume HCI device */ | |
4168 | int hci_resume_dev(struct hci_dev *hdev) | |
4169 | { | |
4170 | hci_notify(hdev, HCI_DEV_RESUME); | |
4171 | return 0; | |
4172 | } | |
4173 | EXPORT_SYMBOL(hci_resume_dev); | |
4174 | ||
76bca880 | 4175 | /* Receive frame from HCI drivers */ |
e1a26170 | 4176 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 4177 | { |
76bca880 | 4178 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 4179 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
4180 | kfree_skb(skb); |
4181 | return -ENXIO; | |
4182 | } | |
4183 | ||
d82603c6 | 4184 | /* Incoming skb */ |
76bca880 MH |
4185 | bt_cb(skb)->incoming = 1; |
4186 | ||
4187 | /* Time stamp */ | |
4188 | __net_timestamp(skb); | |
4189 | ||
76bca880 | 4190 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 4191 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 4192 | |
76bca880 MH |
4193 | return 0; |
4194 | } | |
4195 | EXPORT_SYMBOL(hci_recv_frame); | |
4196 | ||
33e882a5 | 4197 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 4198 | int count, __u8 index) |
33e882a5 SS |
4199 | { |
4200 | int len = 0; | |
4201 | int hlen = 0; | |
4202 | int remain = count; | |
4203 | struct sk_buff *skb; | |
4204 | struct bt_skb_cb *scb; | |
4205 | ||
4206 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 4207 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
4208 | return -EILSEQ; |
4209 | ||
4210 | skb = hdev->reassembly[index]; | |
4211 | ||
4212 | if (!skb) { | |
4213 | switch (type) { | |
4214 | case HCI_ACLDATA_PKT: | |
4215 | len = HCI_MAX_FRAME_SIZE; | |
4216 | hlen = HCI_ACL_HDR_SIZE; | |
4217 | break; | |
4218 | case HCI_EVENT_PKT: | |
4219 | len = HCI_MAX_EVENT_SIZE; | |
4220 | hlen = HCI_EVENT_HDR_SIZE; | |
4221 | break; | |
4222 | case HCI_SCODATA_PKT: | |
4223 | len = HCI_MAX_SCO_SIZE; | |
4224 | hlen = HCI_SCO_HDR_SIZE; | |
4225 | break; | |
4226 | } | |
4227 | ||
1e429f38 | 4228 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
4229 | if (!skb) |
4230 | return -ENOMEM; | |
4231 | ||
4232 | scb = (void *) skb->cb; | |
4233 | scb->expect = hlen; | |
4234 | scb->pkt_type = type; | |
4235 | ||
33e882a5 SS |
4236 | hdev->reassembly[index] = skb; |
4237 | } | |
4238 | ||
4239 | while (count) { | |
4240 | scb = (void *) skb->cb; | |
89bb46d0 | 4241 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
4242 | |
4243 | memcpy(skb_put(skb, len), data, len); | |
4244 | ||
4245 | count -= len; | |
4246 | data += len; | |
4247 | scb->expect -= len; | |
4248 | remain = count; | |
4249 | ||
4250 | switch (type) { | |
4251 | case HCI_EVENT_PKT: | |
4252 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
4253 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
4254 | scb->expect = h->plen; | |
4255 | ||
4256 | if (skb_tailroom(skb) < scb->expect) { | |
4257 | kfree_skb(skb); | |
4258 | hdev->reassembly[index] = NULL; | |
4259 | return -ENOMEM; | |
4260 | } | |
4261 | } | |
4262 | break; | |
4263 | ||
4264 | case HCI_ACLDATA_PKT: | |
4265 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
4266 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
4267 | scb->expect = __le16_to_cpu(h->dlen); | |
4268 | ||
4269 | if (skb_tailroom(skb) < scb->expect) { | |
4270 | kfree_skb(skb); | |
4271 | hdev->reassembly[index] = NULL; | |
4272 | return -ENOMEM; | |
4273 | } | |
4274 | } | |
4275 | break; | |
4276 | ||
4277 | case HCI_SCODATA_PKT: | |
4278 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
4279 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
4280 | scb->expect = h->dlen; | |
4281 | ||
4282 | if (skb_tailroom(skb) < scb->expect) { | |
4283 | kfree_skb(skb); | |
4284 | hdev->reassembly[index] = NULL; | |
4285 | return -ENOMEM; | |
4286 | } | |
4287 | } | |
4288 | break; | |
4289 | } | |
4290 | ||
4291 | if (scb->expect == 0) { | |
4292 | /* Complete frame */ | |
4293 | ||
4294 | bt_cb(skb)->pkt_type = type; | |
e1a26170 | 4295 | hci_recv_frame(hdev, skb); |
33e882a5 SS |
4296 | |
4297 | hdev->reassembly[index] = NULL; | |
4298 | return remain; | |
4299 | } | |
4300 | } | |
4301 | ||
4302 | return remain; | |
4303 | } | |
4304 | ||
ef222013 MH |
4305 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
4306 | { | |
f39a3c06 SS |
4307 | int rem = 0; |
4308 | ||
ef222013 MH |
4309 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
4310 | return -EILSEQ; | |
4311 | ||
da5f6c37 | 4312 | while (count) { |
1e429f38 | 4313 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
4314 | if (rem < 0) |
4315 | return rem; | |
ef222013 | 4316 | |
f39a3c06 SS |
4317 | data += (count - rem); |
4318 | count = rem; | |
f81c6224 | 4319 | } |
ef222013 | 4320 | |
f39a3c06 | 4321 | return rem; |
ef222013 MH |
4322 | } |
4323 | EXPORT_SYMBOL(hci_recv_fragment); | |
4324 | ||
99811510 SS |
4325 | #define STREAM_REASSEMBLY 0 |
4326 | ||
4327 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
4328 | { | |
4329 | int type; | |
4330 | int rem = 0; | |
4331 | ||
da5f6c37 | 4332 | while (count) { |
99811510 SS |
4333 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
4334 | ||
4335 | if (!skb) { | |
4336 | struct { char type; } *pkt; | |
4337 | ||
4338 | /* Start of the frame */ | |
4339 | pkt = data; | |
4340 | type = pkt->type; | |
4341 | ||
4342 | data++; | |
4343 | count--; | |
4344 | } else | |
4345 | type = bt_cb(skb)->pkt_type; | |
4346 | ||
1e429f38 | 4347 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 4348 | STREAM_REASSEMBLY); |
99811510 SS |
4349 | if (rem < 0) |
4350 | return rem; | |
4351 | ||
4352 | data += (count - rem); | |
4353 | count = rem; | |
f81c6224 | 4354 | } |
99811510 SS |
4355 | |
4356 | return rem; | |
4357 | } | |
4358 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
4359 | ||
1da177e4 LT |
4360 | /* ---- Interface to upper protocols ---- */ |
4361 | ||
1da177e4 LT |
4362 | int hci_register_cb(struct hci_cb *cb) |
4363 | { | |
4364 | BT_DBG("%p name %s", cb, cb->name); | |
4365 | ||
f20d09d5 | 4366 | write_lock(&hci_cb_list_lock); |
1da177e4 | 4367 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 4368 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
4369 | |
4370 | return 0; | |
4371 | } | |
4372 | EXPORT_SYMBOL(hci_register_cb); | |
4373 | ||
4374 | int hci_unregister_cb(struct hci_cb *cb) | |
4375 | { | |
4376 | BT_DBG("%p name %s", cb, cb->name); | |
4377 | ||
f20d09d5 | 4378 | write_lock(&hci_cb_list_lock); |
1da177e4 | 4379 | list_del(&cb->list); |
f20d09d5 | 4380 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
4381 | |
4382 | return 0; | |
4383 | } | |
4384 | EXPORT_SYMBOL(hci_unregister_cb); | |
4385 | ||
51086991 | 4386 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 4387 | { |
cdc52faa MH |
4388 | int err; |
4389 | ||
0d48d939 | 4390 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 4391 | |
cd82e61c MH |
4392 | /* Time stamp */ |
4393 | __net_timestamp(skb); | |
1da177e4 | 4394 | |
cd82e61c MH |
4395 | /* Send copy to monitor */ |
4396 | hci_send_to_monitor(hdev, skb); | |
4397 | ||
4398 | if (atomic_read(&hdev->promisc)) { | |
4399 | /* Send copy to the sockets */ | |
470fe1b5 | 4400 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4401 | } |
4402 | ||
4403 | /* Get rid of skb owner, prior to sending to the driver. */ | |
4404 | skb_orphan(skb); | |
4405 | ||
cdc52faa MH |
4406 | err = hdev->send(hdev, skb); |
4407 | if (err < 0) { | |
4408 | BT_ERR("%s sending frame failed (%d)", hdev->name, err); | |
4409 | kfree_skb(skb); | |
4410 | } | |
1da177e4 LT |
4411 | } |
4412 | ||
3119ae95 JH |
4413 | void hci_req_init(struct hci_request *req, struct hci_dev *hdev) |
4414 | { | |
4415 | skb_queue_head_init(&req->cmd_q); | |
4416 | req->hdev = hdev; | |
5d73e034 | 4417 | req->err = 0; |
3119ae95 JH |
4418 | } |
4419 | ||
4420 | int hci_req_run(struct hci_request *req, hci_req_complete_t complete) | |
4421 | { | |
4422 | struct hci_dev *hdev = req->hdev; | |
4423 | struct sk_buff *skb; | |
4424 | unsigned long flags; | |
4425 | ||
4426 | BT_DBG("length %u", skb_queue_len(&req->cmd_q)); | |
4427 | ||
5d73e034 AG |
4428 | /* If an error occured during request building, remove all HCI |
4429 | * commands queued on the HCI request queue. | |
4430 | */ | |
4431 | if (req->err) { | |
4432 | skb_queue_purge(&req->cmd_q); | |
4433 | return req->err; | |
4434 | } | |
4435 | ||
3119ae95 JH |
4436 | /* Do not allow empty requests */ |
4437 | if (skb_queue_empty(&req->cmd_q)) | |
382b0c39 | 4438 | return -ENODATA; |
3119ae95 JH |
4439 | |
4440 | skb = skb_peek_tail(&req->cmd_q); | |
4441 | bt_cb(skb)->req.complete = complete; | |
4442 | ||
4443 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4444 | skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q); | |
4445 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
4446 | ||
4447 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4448 | ||
4449 | return 0; | |
4450 | } | |
4451 | ||
899de765 MH |
4452 | bool hci_req_pending(struct hci_dev *hdev) |
4453 | { | |
4454 | return (hdev->req_status == HCI_REQ_PEND); | |
4455 | } | |
4456 | ||
1ca3a9d0 | 4457 | static struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, |
07dc93dd | 4458 | u32 plen, const void *param) |
1da177e4 LT |
4459 | { |
4460 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
4461 | struct hci_command_hdr *hdr; | |
4462 | struct sk_buff *skb; | |
4463 | ||
1da177e4 | 4464 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
1ca3a9d0 JH |
4465 | if (!skb) |
4466 | return NULL; | |
1da177e4 LT |
4467 | |
4468 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 4469 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
4470 | hdr->plen = plen; |
4471 | ||
4472 | if (plen) | |
4473 | memcpy(skb_put(skb, plen), param, plen); | |
4474 | ||
4475 | BT_DBG("skb len %d", skb->len); | |
4476 | ||
0d48d939 | 4477 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
c78ae283 | 4478 | |
1ca3a9d0 JH |
4479 | return skb; |
4480 | } | |
4481 | ||
4482 | /* Send HCI command */ | |
07dc93dd JH |
4483 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
4484 | const void *param) | |
1ca3a9d0 JH |
4485 | { |
4486 | struct sk_buff *skb; | |
4487 | ||
4488 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
4489 | ||
4490 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
4491 | if (!skb) { | |
4492 | BT_ERR("%s no memory for command", hdev->name); | |
4493 | return -ENOMEM; | |
4494 | } | |
4495 | ||
11714b3d JH |
4496 | /* Stand-alone HCI commands must be flaged as |
4497 | * single-command requests. | |
4498 | */ | |
4499 | bt_cb(skb)->req.start = true; | |
4500 | ||
1da177e4 | 4501 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 4502 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4503 | |
4504 | return 0; | |
4505 | } | |
1da177e4 | 4506 | |
71c76a17 | 4507 | /* Queue a command to an asynchronous HCI request */ |
07dc93dd JH |
4508 | void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, |
4509 | const void *param, u8 event) | |
71c76a17 JH |
4510 | { |
4511 | struct hci_dev *hdev = req->hdev; | |
4512 | struct sk_buff *skb; | |
4513 | ||
4514 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
4515 | ||
34739c1e AG |
4516 | /* If an error occured during request building, there is no point in |
4517 | * queueing the HCI command. We can simply return. | |
4518 | */ | |
4519 | if (req->err) | |
4520 | return; | |
4521 | ||
71c76a17 JH |
4522 | skb = hci_prepare_cmd(hdev, opcode, plen, param); |
4523 | if (!skb) { | |
5d73e034 AG |
4524 | BT_ERR("%s no memory for command (opcode 0x%4.4x)", |
4525 | hdev->name, opcode); | |
4526 | req->err = -ENOMEM; | |
e348fe6b | 4527 | return; |
71c76a17 JH |
4528 | } |
4529 | ||
4530 | if (skb_queue_empty(&req->cmd_q)) | |
4531 | bt_cb(skb)->req.start = true; | |
4532 | ||
02350a72 JH |
4533 | bt_cb(skb)->req.event = event; |
4534 | ||
71c76a17 | 4535 | skb_queue_tail(&req->cmd_q, skb); |
71c76a17 JH |
4536 | } |
4537 | ||
07dc93dd JH |
4538 | void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, |
4539 | const void *param) | |
02350a72 JH |
4540 | { |
4541 | hci_req_add_ev(req, opcode, plen, param, 0); | |
4542 | } | |
4543 | ||
1da177e4 | 4544 | /* Get data from the previously sent command */ |
a9de9248 | 4545 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
4546 | { |
4547 | struct hci_command_hdr *hdr; | |
4548 | ||
4549 | if (!hdev->sent_cmd) | |
4550 | return NULL; | |
4551 | ||
4552 | hdr = (void *) hdev->sent_cmd->data; | |
4553 | ||
a9de9248 | 4554 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
4555 | return NULL; |
4556 | ||
f0e09510 | 4557 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
4558 | |
4559 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
4560 | } | |
4561 | ||
4562 | /* Send ACL data */ | |
4563 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
4564 | { | |
4565 | struct hci_acl_hdr *hdr; | |
4566 | int len = skb->len; | |
4567 | ||
badff6d0 ACM |
4568 | skb_push(skb, HCI_ACL_HDR_SIZE); |
4569 | skb_reset_transport_header(skb); | |
9c70220b | 4570 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
4571 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
4572 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
4573 | } |
4574 | ||
ee22be7e | 4575 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 4576 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 4577 | { |
ee22be7e | 4578 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
4579 | struct hci_dev *hdev = conn->hdev; |
4580 | struct sk_buff *list; | |
4581 | ||
087bfd99 GP |
4582 | skb->len = skb_headlen(skb); |
4583 | skb->data_len = 0; | |
4584 | ||
4585 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
4586 | |
4587 | switch (hdev->dev_type) { | |
4588 | case HCI_BREDR: | |
4589 | hci_add_acl_hdr(skb, conn->handle, flags); | |
4590 | break; | |
4591 | case HCI_AMP: | |
4592 | hci_add_acl_hdr(skb, chan->handle, flags); | |
4593 | break; | |
4594 | default: | |
4595 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
4596 | return; | |
4597 | } | |
087bfd99 | 4598 | |
70f23020 AE |
4599 | list = skb_shinfo(skb)->frag_list; |
4600 | if (!list) { | |
1da177e4 LT |
4601 | /* Non fragmented */ |
4602 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
4603 | ||
73d80deb | 4604 | skb_queue_tail(queue, skb); |
1da177e4 LT |
4605 | } else { |
4606 | /* Fragmented */ | |
4607 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
4608 | ||
4609 | skb_shinfo(skb)->frag_list = NULL; | |
4610 | ||
4611 | /* Queue all fragments atomically */ | |
af3e6359 | 4612 | spin_lock(&queue->lock); |
1da177e4 | 4613 | |
73d80deb | 4614 | __skb_queue_tail(queue, skb); |
e702112f AE |
4615 | |
4616 | flags &= ~ACL_START; | |
4617 | flags |= ACL_CONT; | |
1da177e4 LT |
4618 | do { |
4619 | skb = list; list = list->next; | |
8e87d142 | 4620 | |
0d48d939 | 4621 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 4622 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
4623 | |
4624 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
4625 | ||
73d80deb | 4626 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
4627 | } while (list); |
4628 | ||
af3e6359 | 4629 | spin_unlock(&queue->lock); |
1da177e4 | 4630 | } |
73d80deb LAD |
4631 | } |
4632 | ||
4633 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
4634 | { | |
ee22be7e | 4635 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 4636 | |
f0e09510 | 4637 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 4638 | |
ee22be7e | 4639 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 4640 | |
3eff45ea | 4641 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 4642 | } |
1da177e4 LT |
4643 | |
4644 | /* Send SCO data */ | |
0d861d8b | 4645 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
4646 | { |
4647 | struct hci_dev *hdev = conn->hdev; | |
4648 | struct hci_sco_hdr hdr; | |
4649 | ||
4650 | BT_DBG("%s len %d", hdev->name, skb->len); | |
4651 | ||
aca3192c | 4652 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
4653 | hdr.dlen = skb->len; |
4654 | ||
badff6d0 ACM |
4655 | skb_push(skb, HCI_SCO_HDR_SIZE); |
4656 | skb_reset_transport_header(skb); | |
9c70220b | 4657 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 4658 | |
0d48d939 | 4659 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 4660 | |
1da177e4 | 4661 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 4662 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 4663 | } |
1da177e4 LT |
4664 | |
4665 | /* ---- HCI TX task (outgoing data) ---- */ | |
4666 | ||
4667 | /* HCI Connection scheduler */ | |
6039aa73 GP |
4668 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
4669 | int *quote) | |
1da177e4 LT |
4670 | { |
4671 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 4672 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 4673 | unsigned int num = 0, min = ~0; |
1da177e4 | 4674 | |
8e87d142 | 4675 | /* We don't have to lock device here. Connections are always |
1da177e4 | 4676 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
4677 | |
4678 | rcu_read_lock(); | |
4679 | ||
4680 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 4681 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 4682 | continue; |
769be974 MH |
4683 | |
4684 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
4685 | continue; | |
4686 | ||
1da177e4 LT |
4687 | num++; |
4688 | ||
4689 | if (c->sent < min) { | |
4690 | min = c->sent; | |
4691 | conn = c; | |
4692 | } | |
52087a79 LAD |
4693 | |
4694 | if (hci_conn_num(hdev, type) == num) | |
4695 | break; | |
1da177e4 LT |
4696 | } |
4697 | ||
bf4c6325 GP |
4698 | rcu_read_unlock(); |
4699 | ||
1da177e4 | 4700 | if (conn) { |
6ed58ec5 VT |
4701 | int cnt, q; |
4702 | ||
4703 | switch (conn->type) { | |
4704 | case ACL_LINK: | |
4705 | cnt = hdev->acl_cnt; | |
4706 | break; | |
4707 | case SCO_LINK: | |
4708 | case ESCO_LINK: | |
4709 | cnt = hdev->sco_cnt; | |
4710 | break; | |
4711 | case LE_LINK: | |
4712 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
4713 | break; | |
4714 | default: | |
4715 | cnt = 0; | |
4716 | BT_ERR("Unknown link type"); | |
4717 | } | |
4718 | ||
4719 | q = cnt / num; | |
1da177e4 LT |
4720 | *quote = q ? q : 1; |
4721 | } else | |
4722 | *quote = 0; | |
4723 | ||
4724 | BT_DBG("conn %p quote %d", conn, *quote); | |
4725 | return conn; | |
4726 | } | |
4727 | ||
6039aa73 | 4728 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
4729 | { |
4730 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 4731 | struct hci_conn *c; |
1da177e4 | 4732 | |
bae1f5d9 | 4733 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 4734 | |
bf4c6325 GP |
4735 | rcu_read_lock(); |
4736 | ||
1da177e4 | 4737 | /* Kill stalled connections */ |
bf4c6325 | 4738 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 4739 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
4740 | BT_ERR("%s killing stalled connection %pMR", |
4741 | hdev->name, &c->dst); | |
bed71748 | 4742 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
4743 | } |
4744 | } | |
bf4c6325 GP |
4745 | |
4746 | rcu_read_unlock(); | |
1da177e4 LT |
4747 | } |
4748 | ||
6039aa73 GP |
4749 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
4750 | int *quote) | |
1da177e4 | 4751 | { |
73d80deb LAD |
4752 | struct hci_conn_hash *h = &hdev->conn_hash; |
4753 | struct hci_chan *chan = NULL; | |
abc5de8f | 4754 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 4755 | struct hci_conn *conn; |
73d80deb LAD |
4756 | int cnt, q, conn_num = 0; |
4757 | ||
4758 | BT_DBG("%s", hdev->name); | |
4759 | ||
bf4c6325 GP |
4760 | rcu_read_lock(); |
4761 | ||
4762 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
4763 | struct hci_chan *tmp; |
4764 | ||
4765 | if (conn->type != type) | |
4766 | continue; | |
4767 | ||
4768 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
4769 | continue; | |
4770 | ||
4771 | conn_num++; | |
4772 | ||
8192edef | 4773 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
4774 | struct sk_buff *skb; |
4775 | ||
4776 | if (skb_queue_empty(&tmp->data_q)) | |
4777 | continue; | |
4778 | ||
4779 | skb = skb_peek(&tmp->data_q); | |
4780 | if (skb->priority < cur_prio) | |
4781 | continue; | |
4782 | ||
4783 | if (skb->priority > cur_prio) { | |
4784 | num = 0; | |
4785 | min = ~0; | |
4786 | cur_prio = skb->priority; | |
4787 | } | |
4788 | ||
4789 | num++; | |
4790 | ||
4791 | if (conn->sent < min) { | |
4792 | min = conn->sent; | |
4793 | chan = tmp; | |
4794 | } | |
4795 | } | |
4796 | ||
4797 | if (hci_conn_num(hdev, type) == conn_num) | |
4798 | break; | |
4799 | } | |
4800 | ||
bf4c6325 GP |
4801 | rcu_read_unlock(); |
4802 | ||
73d80deb LAD |
4803 | if (!chan) |
4804 | return NULL; | |
4805 | ||
4806 | switch (chan->conn->type) { | |
4807 | case ACL_LINK: | |
4808 | cnt = hdev->acl_cnt; | |
4809 | break; | |
bd1eb66b AE |
4810 | case AMP_LINK: |
4811 | cnt = hdev->block_cnt; | |
4812 | break; | |
73d80deb LAD |
4813 | case SCO_LINK: |
4814 | case ESCO_LINK: | |
4815 | cnt = hdev->sco_cnt; | |
4816 | break; | |
4817 | case LE_LINK: | |
4818 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
4819 | break; | |
4820 | default: | |
4821 | cnt = 0; | |
4822 | BT_ERR("Unknown link type"); | |
4823 | } | |
4824 | ||
4825 | q = cnt / num; | |
4826 | *quote = q ? q : 1; | |
4827 | BT_DBG("chan %p quote %d", chan, *quote); | |
4828 | return chan; | |
4829 | } | |
4830 | ||
02b20f0b LAD |
4831 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
4832 | { | |
4833 | struct hci_conn_hash *h = &hdev->conn_hash; | |
4834 | struct hci_conn *conn; | |
4835 | int num = 0; | |
4836 | ||
4837 | BT_DBG("%s", hdev->name); | |
4838 | ||
bf4c6325 GP |
4839 | rcu_read_lock(); |
4840 | ||
4841 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
4842 | struct hci_chan *chan; |
4843 | ||
4844 | if (conn->type != type) | |
4845 | continue; | |
4846 | ||
4847 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
4848 | continue; | |
4849 | ||
4850 | num++; | |
4851 | ||
8192edef | 4852 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
4853 | struct sk_buff *skb; |
4854 | ||
4855 | if (chan->sent) { | |
4856 | chan->sent = 0; | |
4857 | continue; | |
4858 | } | |
4859 | ||
4860 | if (skb_queue_empty(&chan->data_q)) | |
4861 | continue; | |
4862 | ||
4863 | skb = skb_peek(&chan->data_q); | |
4864 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
4865 | continue; | |
4866 | ||
4867 | skb->priority = HCI_PRIO_MAX - 1; | |
4868 | ||
4869 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 4870 | skb->priority); |
02b20f0b LAD |
4871 | } |
4872 | ||
4873 | if (hci_conn_num(hdev, type) == num) | |
4874 | break; | |
4875 | } | |
bf4c6325 GP |
4876 | |
4877 | rcu_read_unlock(); | |
4878 | ||
02b20f0b LAD |
4879 | } |
4880 | ||
b71d385a AE |
4881 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
4882 | { | |
4883 | /* Calculate count of blocks used by this packet */ | |
4884 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
4885 | } | |
4886 | ||
6039aa73 | 4887 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 4888 | { |
4a964404 | 4889 | if (!test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
1da177e4 LT |
4890 | /* ACL tx timeout must be longer than maximum |
4891 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 4892 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 4893 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 4894 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 4895 | } |
63d2bc1b | 4896 | } |
1da177e4 | 4897 | |
6039aa73 | 4898 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
4899 | { |
4900 | unsigned int cnt = hdev->acl_cnt; | |
4901 | struct hci_chan *chan; | |
4902 | struct sk_buff *skb; | |
4903 | int quote; | |
4904 | ||
4905 | __check_timeout(hdev, cnt); | |
04837f64 | 4906 | |
73d80deb | 4907 | while (hdev->acl_cnt && |
a8c5fb1a | 4908 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
4909 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4910 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4911 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4912 | skb->len, skb->priority); |
73d80deb | 4913 | |
ec1cce24 LAD |
4914 | /* Stop if priority has changed */ |
4915 | if (skb->priority < priority) | |
4916 | break; | |
4917 | ||
4918 | skb = skb_dequeue(&chan->data_q); | |
4919 | ||
73d80deb | 4920 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 4921 | bt_cb(skb)->force_active); |
04837f64 | 4922 | |
57d17d70 | 4923 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4924 | hdev->acl_last_tx = jiffies; |
4925 | ||
4926 | hdev->acl_cnt--; | |
73d80deb LAD |
4927 | chan->sent++; |
4928 | chan->conn->sent++; | |
1da177e4 LT |
4929 | } |
4930 | } | |
02b20f0b LAD |
4931 | |
4932 | if (cnt != hdev->acl_cnt) | |
4933 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
4934 | } |
4935 | ||
6039aa73 | 4936 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 4937 | { |
63d2bc1b | 4938 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
4939 | struct hci_chan *chan; |
4940 | struct sk_buff *skb; | |
4941 | int quote; | |
bd1eb66b | 4942 | u8 type; |
b71d385a | 4943 | |
63d2bc1b | 4944 | __check_timeout(hdev, cnt); |
b71d385a | 4945 | |
bd1eb66b AE |
4946 | BT_DBG("%s", hdev->name); |
4947 | ||
4948 | if (hdev->dev_type == HCI_AMP) | |
4949 | type = AMP_LINK; | |
4950 | else | |
4951 | type = ACL_LINK; | |
4952 | ||
b71d385a | 4953 | while (hdev->block_cnt > 0 && |
bd1eb66b | 4954 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
4955 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4956 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
4957 | int blocks; | |
4958 | ||
4959 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 4960 | skb->len, skb->priority); |
b71d385a AE |
4961 | |
4962 | /* Stop if priority has changed */ | |
4963 | if (skb->priority < priority) | |
4964 | break; | |
4965 | ||
4966 | skb = skb_dequeue(&chan->data_q); | |
4967 | ||
4968 | blocks = __get_blocks(hdev, skb); | |
4969 | if (blocks > hdev->block_cnt) | |
4970 | return; | |
4971 | ||
4972 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 4973 | bt_cb(skb)->force_active); |
b71d385a | 4974 | |
57d17d70 | 4975 | hci_send_frame(hdev, skb); |
b71d385a AE |
4976 | hdev->acl_last_tx = jiffies; |
4977 | ||
4978 | hdev->block_cnt -= blocks; | |
4979 | quote -= blocks; | |
4980 | ||
4981 | chan->sent += blocks; | |
4982 | chan->conn->sent += blocks; | |
4983 | } | |
4984 | } | |
4985 | ||
4986 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 4987 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
4988 | } |
4989 | ||
6039aa73 | 4990 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
4991 | { |
4992 | BT_DBG("%s", hdev->name); | |
4993 | ||
bd1eb66b AE |
4994 | /* No ACL link over BR/EDR controller */ |
4995 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
4996 | return; | |
4997 | ||
4998 | /* No AMP link over AMP controller */ | |
4999 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
5000 | return; |
5001 | ||
5002 | switch (hdev->flow_ctl_mode) { | |
5003 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
5004 | hci_sched_acl_pkt(hdev); | |
5005 | break; | |
5006 | ||
5007 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
5008 | hci_sched_acl_blk(hdev); | |
5009 | break; | |
5010 | } | |
5011 | } | |
5012 | ||
1da177e4 | 5013 | /* Schedule SCO */ |
6039aa73 | 5014 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
5015 | { |
5016 | struct hci_conn *conn; | |
5017 | struct sk_buff *skb; | |
5018 | int quote; | |
5019 | ||
5020 | BT_DBG("%s", hdev->name); | |
5021 | ||
52087a79 LAD |
5022 | if (!hci_conn_num(hdev, SCO_LINK)) |
5023 | return; | |
5024 | ||
1da177e4 LT |
5025 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
5026 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
5027 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 5028 | hci_send_frame(hdev, skb); |
1da177e4 LT |
5029 | |
5030 | conn->sent++; | |
5031 | if (conn->sent == ~0) | |
5032 | conn->sent = 0; | |
5033 | } | |
5034 | } | |
5035 | } | |
5036 | ||
6039aa73 | 5037 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
5038 | { |
5039 | struct hci_conn *conn; | |
5040 | struct sk_buff *skb; | |
5041 | int quote; | |
5042 | ||
5043 | BT_DBG("%s", hdev->name); | |
5044 | ||
52087a79 LAD |
5045 | if (!hci_conn_num(hdev, ESCO_LINK)) |
5046 | return; | |
5047 | ||
8fc9ced3 GP |
5048 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
5049 | "e))) { | |
b6a0dc82 MH |
5050 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
5051 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 5052 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
5053 | |
5054 | conn->sent++; | |
5055 | if (conn->sent == ~0) | |
5056 | conn->sent = 0; | |
5057 | } | |
5058 | } | |
5059 | } | |
5060 | ||
6039aa73 | 5061 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 5062 | { |
73d80deb | 5063 | struct hci_chan *chan; |
6ed58ec5 | 5064 | struct sk_buff *skb; |
02b20f0b | 5065 | int quote, cnt, tmp; |
6ed58ec5 VT |
5066 | |
5067 | BT_DBG("%s", hdev->name); | |
5068 | ||
52087a79 LAD |
5069 | if (!hci_conn_num(hdev, LE_LINK)) |
5070 | return; | |
5071 | ||
4a964404 | 5072 | if (!test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
6ed58ec5 VT |
5073 | /* LE tx timeout must be longer than maximum |
5074 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 5075 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 5076 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 5077 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
5078 | } |
5079 | ||
5080 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 5081 | tmp = cnt; |
73d80deb | 5082 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
5083 | u32 priority = (skb_peek(&chan->data_q))->priority; |
5084 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 5085 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 5086 | skb->len, skb->priority); |
6ed58ec5 | 5087 | |
ec1cce24 LAD |
5088 | /* Stop if priority has changed */ |
5089 | if (skb->priority < priority) | |
5090 | break; | |
5091 | ||
5092 | skb = skb_dequeue(&chan->data_q); | |
5093 | ||
57d17d70 | 5094 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
5095 | hdev->le_last_tx = jiffies; |
5096 | ||
5097 | cnt--; | |
73d80deb LAD |
5098 | chan->sent++; |
5099 | chan->conn->sent++; | |
6ed58ec5 VT |
5100 | } |
5101 | } | |
73d80deb | 5102 | |
6ed58ec5 VT |
5103 | if (hdev->le_pkts) |
5104 | hdev->le_cnt = cnt; | |
5105 | else | |
5106 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
5107 | |
5108 | if (cnt != tmp) | |
5109 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
5110 | } |
5111 | ||
3eff45ea | 5112 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 5113 | { |
3eff45ea | 5114 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
5115 | struct sk_buff *skb; |
5116 | ||
6ed58ec5 | 5117 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 5118 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 5119 | |
52de599e MH |
5120 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
5121 | /* Schedule queues and send stuff to HCI driver */ | |
5122 | hci_sched_acl(hdev); | |
5123 | hci_sched_sco(hdev); | |
5124 | hci_sched_esco(hdev); | |
5125 | hci_sched_le(hdev); | |
5126 | } | |
6ed58ec5 | 5127 | |
1da177e4 LT |
5128 | /* Send next queued raw (unknown type) packet */ |
5129 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 5130 | hci_send_frame(hdev, skb); |
1da177e4 LT |
5131 | } |
5132 | ||
25985edc | 5133 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
5134 | |
5135 | /* ACL data packet */ | |
6039aa73 | 5136 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
5137 | { |
5138 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
5139 | struct hci_conn *conn; | |
5140 | __u16 handle, flags; | |
5141 | ||
5142 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
5143 | ||
5144 | handle = __le16_to_cpu(hdr->handle); | |
5145 | flags = hci_flags(handle); | |
5146 | handle = hci_handle(handle); | |
5147 | ||
f0e09510 | 5148 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 5149 | handle, flags); |
1da177e4 LT |
5150 | |
5151 | hdev->stat.acl_rx++; | |
5152 | ||
5153 | hci_dev_lock(hdev); | |
5154 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
5155 | hci_dev_unlock(hdev); | |
8e87d142 | 5156 | |
1da177e4 | 5157 | if (conn) { |
65983fc7 | 5158 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 5159 | |
1da177e4 | 5160 | /* Send to upper protocol */ |
686ebf28 UF |
5161 | l2cap_recv_acldata(conn, skb, flags); |
5162 | return; | |
1da177e4 | 5163 | } else { |
8e87d142 | 5164 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 5165 | hdev->name, handle); |
1da177e4 LT |
5166 | } |
5167 | ||
5168 | kfree_skb(skb); | |
5169 | } | |
5170 | ||
5171 | /* SCO data packet */ | |
6039aa73 | 5172 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
5173 | { |
5174 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
5175 | struct hci_conn *conn; | |
5176 | __u16 handle; | |
5177 | ||
5178 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
5179 | ||
5180 | handle = __le16_to_cpu(hdr->handle); | |
5181 | ||
f0e09510 | 5182 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
5183 | |
5184 | hdev->stat.sco_rx++; | |
5185 | ||
5186 | hci_dev_lock(hdev); | |
5187 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
5188 | hci_dev_unlock(hdev); | |
5189 | ||
5190 | if (conn) { | |
1da177e4 | 5191 | /* Send to upper protocol */ |
686ebf28 UF |
5192 | sco_recv_scodata(conn, skb); |
5193 | return; | |
1da177e4 | 5194 | } else { |
8e87d142 | 5195 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 5196 | hdev->name, handle); |
1da177e4 LT |
5197 | } |
5198 | ||
5199 | kfree_skb(skb); | |
5200 | } | |
5201 | ||
9238f36a JH |
5202 | static bool hci_req_is_complete(struct hci_dev *hdev) |
5203 | { | |
5204 | struct sk_buff *skb; | |
5205 | ||
5206 | skb = skb_peek(&hdev->cmd_q); | |
5207 | if (!skb) | |
5208 | return true; | |
5209 | ||
5210 | return bt_cb(skb)->req.start; | |
5211 | } | |
5212 | ||
42c6b129 JH |
5213 | static void hci_resend_last(struct hci_dev *hdev) |
5214 | { | |
5215 | struct hci_command_hdr *sent; | |
5216 | struct sk_buff *skb; | |
5217 | u16 opcode; | |
5218 | ||
5219 | if (!hdev->sent_cmd) | |
5220 | return; | |
5221 | ||
5222 | sent = (void *) hdev->sent_cmd->data; | |
5223 | opcode = __le16_to_cpu(sent->opcode); | |
5224 | if (opcode == HCI_OP_RESET) | |
5225 | return; | |
5226 | ||
5227 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
5228 | if (!skb) | |
5229 | return; | |
5230 | ||
5231 | skb_queue_head(&hdev->cmd_q, skb); | |
5232 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
5233 | } | |
5234 | ||
9238f36a JH |
5235 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status) |
5236 | { | |
5237 | hci_req_complete_t req_complete = NULL; | |
5238 | struct sk_buff *skb; | |
5239 | unsigned long flags; | |
5240 | ||
5241 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
5242 | ||
42c6b129 JH |
5243 | /* If the completed command doesn't match the last one that was |
5244 | * sent we need to do special handling of it. | |
9238f36a | 5245 | */ |
42c6b129 JH |
5246 | if (!hci_sent_cmd_data(hdev, opcode)) { |
5247 | /* Some CSR based controllers generate a spontaneous | |
5248 | * reset complete event during init and any pending | |
5249 | * command will never be completed. In such a case we | |
5250 | * need to resend whatever was the last sent | |
5251 | * command. | |
5252 | */ | |
5253 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
5254 | hci_resend_last(hdev); | |
5255 | ||
9238f36a | 5256 | return; |
42c6b129 | 5257 | } |
9238f36a JH |
5258 | |
5259 | /* If the command succeeded and there's still more commands in | |
5260 | * this request the request is not yet complete. | |
5261 | */ | |
5262 | if (!status && !hci_req_is_complete(hdev)) | |
5263 | return; | |
5264 | ||
5265 | /* If this was the last command in a request the complete | |
5266 | * callback would be found in hdev->sent_cmd instead of the | |
5267 | * command queue (hdev->cmd_q). | |
5268 | */ | |
5269 | if (hdev->sent_cmd) { | |
5270 | req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
53e21fbc JH |
5271 | |
5272 | if (req_complete) { | |
5273 | /* We must set the complete callback to NULL to | |
5274 | * avoid calling the callback more than once if | |
5275 | * this function gets called again. | |
5276 | */ | |
5277 | bt_cb(hdev->sent_cmd)->req.complete = NULL; | |
5278 | ||
9238f36a | 5279 | goto call_complete; |
53e21fbc | 5280 | } |
9238f36a JH |
5281 | } |
5282 | ||
5283 | /* Remove all pending commands belonging to this request */ | |
5284 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
5285 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
5286 | if (bt_cb(skb)->req.start) { | |
5287 | __skb_queue_head(&hdev->cmd_q, skb); | |
5288 | break; | |
5289 | } | |
5290 | ||
5291 | req_complete = bt_cb(skb)->req.complete; | |
5292 | kfree_skb(skb); | |
5293 | } | |
5294 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
5295 | ||
5296 | call_complete: | |
5297 | if (req_complete) | |
5298 | req_complete(hdev, status); | |
5299 | } | |
5300 | ||
b78752cc | 5301 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 5302 | { |
b78752cc | 5303 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
5304 | struct sk_buff *skb; |
5305 | ||
5306 | BT_DBG("%s", hdev->name); | |
5307 | ||
1da177e4 | 5308 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
5309 | /* Send copy to monitor */ |
5310 | hci_send_to_monitor(hdev, skb); | |
5311 | ||
1da177e4 LT |
5312 | if (atomic_read(&hdev->promisc)) { |
5313 | /* Send copy to the sockets */ | |
470fe1b5 | 5314 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
5315 | } |
5316 | ||
fee746b0 | 5317 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1da177e4 LT |
5318 | kfree_skb(skb); |
5319 | continue; | |
5320 | } | |
5321 | ||
5322 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
5323 | /* Don't process data packets in this states. */ | |
0d48d939 | 5324 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
5325 | case HCI_ACLDATA_PKT: |
5326 | case HCI_SCODATA_PKT: | |
5327 | kfree_skb(skb); | |
5328 | continue; | |
3ff50b79 | 5329 | } |
1da177e4 LT |
5330 | } |
5331 | ||
5332 | /* Process frame */ | |
0d48d939 | 5333 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 5334 | case HCI_EVENT_PKT: |
b78752cc | 5335 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
5336 | hci_event_packet(hdev, skb); |
5337 | break; | |
5338 | ||
5339 | case HCI_ACLDATA_PKT: | |
5340 | BT_DBG("%s ACL data packet", hdev->name); | |
5341 | hci_acldata_packet(hdev, skb); | |
5342 | break; | |
5343 | ||
5344 | case HCI_SCODATA_PKT: | |
5345 | BT_DBG("%s SCO data packet", hdev->name); | |
5346 | hci_scodata_packet(hdev, skb); | |
5347 | break; | |
5348 | ||
5349 | default: | |
5350 | kfree_skb(skb); | |
5351 | break; | |
5352 | } | |
5353 | } | |
1da177e4 LT |
5354 | } |
5355 | ||
c347b765 | 5356 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 5357 | { |
c347b765 | 5358 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
5359 | struct sk_buff *skb; |
5360 | ||
2104786b AE |
5361 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
5362 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 5363 | |
1da177e4 | 5364 | /* Send queued commands */ |
5a08ecce AE |
5365 | if (atomic_read(&hdev->cmd_cnt)) { |
5366 | skb = skb_dequeue(&hdev->cmd_q); | |
5367 | if (!skb) | |
5368 | return; | |
5369 | ||
7585b97a | 5370 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 5371 | |
a675d7f1 | 5372 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 5373 | if (hdev->sent_cmd) { |
1da177e4 | 5374 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 5375 | hci_send_frame(hdev, skb); |
7bdb8a5c | 5376 | if (test_bit(HCI_RESET, &hdev->flags)) |
65cc2b49 | 5377 | cancel_delayed_work(&hdev->cmd_timer); |
7bdb8a5c | 5378 | else |
65cc2b49 MH |
5379 | schedule_delayed_work(&hdev->cmd_timer, |
5380 | HCI_CMD_TIMEOUT); | |
1da177e4 LT |
5381 | } else { |
5382 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 5383 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
5384 | } |
5385 | } | |
5386 | } | |
b1efcc28 AG |
5387 | |
5388 | void hci_req_add_le_scan_disable(struct hci_request *req) | |
5389 | { | |
5390 | struct hci_cp_le_set_scan_enable cp; | |
5391 | ||
5392 | memset(&cp, 0, sizeof(cp)); | |
5393 | cp.enable = LE_SCAN_DISABLE; | |
5394 | hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
5395 | } | |
a4790dbd | 5396 | |
8ef30fd3 AG |
5397 | void hci_req_add_le_passive_scan(struct hci_request *req) |
5398 | { | |
5399 | struct hci_cp_le_set_scan_param param_cp; | |
5400 | struct hci_cp_le_set_scan_enable enable_cp; | |
5401 | struct hci_dev *hdev = req->hdev; | |
5402 | u8 own_addr_type; | |
5403 | ||
6ab535a7 MH |
5404 | /* Set require_privacy to false since no SCAN_REQ are send |
5405 | * during passive scanning. Not using an unresolvable address | |
5406 | * here is important so that peer devices using direct | |
5407 | * advertising with our address will be correctly reported | |
5408 | * by the controller. | |
8ef30fd3 | 5409 | */ |
6ab535a7 | 5410 | if (hci_update_random_address(req, false, &own_addr_type)) |
8ef30fd3 AG |
5411 | return; |
5412 | ||
5413 | memset(¶m_cp, 0, sizeof(param_cp)); | |
5414 | param_cp.type = LE_SCAN_PASSIVE; | |
5415 | param_cp.interval = cpu_to_le16(hdev->le_scan_interval); | |
5416 | param_cp.window = cpu_to_le16(hdev->le_scan_window); | |
5417 | param_cp.own_address_type = own_addr_type; | |
5418 | hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp), | |
5419 | ¶m_cp); | |
5420 | ||
5421 | memset(&enable_cp, 0, sizeof(enable_cp)); | |
5422 | enable_cp.enable = LE_SCAN_ENABLE; | |
4340a124 | 5423 | enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; |
8ef30fd3 AG |
5424 | hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp), |
5425 | &enable_cp); | |
5426 | } | |
5427 | ||
a4790dbd AG |
5428 | static void update_background_scan_complete(struct hci_dev *hdev, u8 status) |
5429 | { | |
5430 | if (status) | |
5431 | BT_DBG("HCI request failed to update background scanning: " | |
5432 | "status 0x%2.2x", status); | |
5433 | } | |
5434 | ||
5435 | /* This function controls the background scanning based on hdev->pend_le_conns | |
5436 | * list. If there are pending LE connection we start the background scanning, | |
5437 | * otherwise we stop it. | |
5438 | * | |
5439 | * This function requires the caller holds hdev->lock. | |
5440 | */ | |
5441 | void hci_update_background_scan(struct hci_dev *hdev) | |
5442 | { | |
a4790dbd AG |
5443 | struct hci_request req; |
5444 | struct hci_conn *conn; | |
5445 | int err; | |
5446 | ||
c20c02d5 MH |
5447 | if (!test_bit(HCI_UP, &hdev->flags) || |
5448 | test_bit(HCI_INIT, &hdev->flags) || | |
5449 | test_bit(HCI_SETUP, &hdev->dev_flags) || | |
d603b76b | 5450 | test_bit(HCI_CONFIG, &hdev->dev_flags) || |
b8221770 | 5451 | test_bit(HCI_AUTO_OFF, &hdev->dev_flags) || |
c20c02d5 | 5452 | test_bit(HCI_UNREGISTER, &hdev->dev_flags)) |
1c1697c0 MH |
5453 | return; |
5454 | ||
a70f4b5f JH |
5455 | /* No point in doing scanning if LE support hasn't been enabled */ |
5456 | if (!test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) | |
5457 | return; | |
5458 | ||
ae23ada4 JH |
5459 | /* If discovery is active don't interfere with it */ |
5460 | if (hdev->discovery.state != DISCOVERY_STOPPED) | |
5461 | return; | |
5462 | ||
a4790dbd AG |
5463 | hci_req_init(&req, hdev); |
5464 | ||
2b7be33e JH |
5465 | if (!test_bit(HCI_CONNECTABLE, &hdev->dev_flags) && |
5466 | list_empty(&hdev->pend_le_conns) && | |
66f8455a | 5467 | list_empty(&hdev->pend_le_reports)) { |
0d2bf134 JH |
5468 | /* If there is no pending LE connections or devices |
5469 | * to be scanned for, we should stop the background | |
5470 | * scanning. | |
a4790dbd AG |
5471 | */ |
5472 | ||
5473 | /* If controller is not scanning we are done. */ | |
5474 | if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
5475 | return; | |
5476 | ||
5477 | hci_req_add_le_scan_disable(&req); | |
5478 | ||
5479 | BT_DBG("%s stopping background scanning", hdev->name); | |
5480 | } else { | |
a4790dbd AG |
5481 | /* If there is at least one pending LE connection, we should |
5482 | * keep the background scan running. | |
5483 | */ | |
5484 | ||
a4790dbd AG |
5485 | /* If controller is connecting, we should not start scanning |
5486 | * since some controllers are not able to scan and connect at | |
5487 | * the same time. | |
5488 | */ | |
5489 | conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT); | |
5490 | if (conn) | |
5491 | return; | |
5492 | ||
4340a124 AG |
5493 | /* If controller is currently scanning, we stop it to ensure we |
5494 | * don't miss any advertising (due to duplicates filter). | |
5495 | */ | |
5496 | if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
5497 | hci_req_add_le_scan_disable(&req); | |
5498 | ||
8ef30fd3 | 5499 | hci_req_add_le_passive_scan(&req); |
a4790dbd AG |
5500 | |
5501 | BT_DBG("%s starting background scanning", hdev->name); | |
5502 | } | |
5503 | ||
5504 | err = hci_req_run(&req, update_background_scan_complete); | |
5505 | if (err) | |
5506 | BT_ERR("Failed to run HCI request: err %d", err); | |
5507 | } |