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 | 889 | static int conn_latency_set(void *data, u64 val) |
3f959d46 MH |
890 | { |
891 | struct hci_dev *hdev = data; | |
892 | ||
816a93d1 | 893 | if (val > 0x01f3) |
3f959d46 MH |
894 | return -EINVAL; |
895 | ||
896 | hci_dev_lock(hdev); | |
816a93d1 | 897 | hdev->le_conn_latency = val; |
3f959d46 MH |
898 | hci_dev_unlock(hdev); |
899 | ||
900 | return 0; | |
901 | } | |
902 | ||
816a93d1 | 903 | static int conn_latency_get(void *data, u64 *val) |
3f959d46 MH |
904 | { |
905 | struct hci_dev *hdev = data; | |
906 | ||
907 | hci_dev_lock(hdev); | |
816a93d1 | 908 | *val = hdev->le_conn_latency; |
3f959d46 MH |
909 | hci_dev_unlock(hdev); |
910 | ||
911 | return 0; | |
912 | } | |
913 | ||
816a93d1 MH |
914 | DEFINE_SIMPLE_ATTRIBUTE(conn_latency_fops, conn_latency_get, |
915 | conn_latency_set, "%llu\n"); | |
3f959d46 | 916 | |
f1649577 | 917 | static int supervision_timeout_set(void *data, u64 val) |
89863109 | 918 | { |
f1649577 | 919 | struct hci_dev *hdev = data; |
89863109 | 920 | |
f1649577 MH |
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; | |
89863109 JR |
929 | } |
930 | ||
f1649577 | 931 | static int supervision_timeout_get(void *data, u64 *val) |
89863109 | 932 | { |
f1649577 | 933 | struct hci_dev *hdev = data; |
89863109 | 934 | |
f1649577 MH |
935 | hci_dev_lock(hdev); |
936 | *val = hdev->le_supv_timeout; | |
937 | hci_dev_unlock(hdev); | |
89863109 | 938 | |
f1649577 MH |
939 | return 0; |
940 | } | |
89863109 | 941 | |
f1649577 MH |
942 | DEFINE_SIMPLE_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get, |
943 | supervision_timeout_set, "%llu\n"); | |
89863109 | 944 | |
3f959d46 MH |
945 | static int adv_channel_map_set(void *data, u64 val) |
946 | { | |
947 | struct hci_dev *hdev = data; | |
89863109 | 948 | |
3f959d46 MH |
949 | if (val < 0x01 || val > 0x07) |
950 | return -EINVAL; | |
89863109 | 951 | |
3f959d46 MH |
952 | hci_dev_lock(hdev); |
953 | hdev->le_adv_channel_map = val; | |
954 | hci_dev_unlock(hdev); | |
89863109 | 955 | |
3f959d46 MH |
956 | return 0; |
957 | } | |
89863109 | 958 | |
3f959d46 | 959 | static int adv_channel_map_get(void *data, u64 *val) |
7d474e06 | 960 | { |
3f959d46 | 961 | struct hci_dev *hdev = data; |
7d474e06 AG |
962 | |
963 | hci_dev_lock(hdev); | |
3f959d46 MH |
964 | *val = hdev->le_adv_channel_map; |
965 | hci_dev_unlock(hdev); | |
7d474e06 | 966 | |
3f959d46 MH |
967 | return 0; |
968 | } | |
969 | ||
970 | DEFINE_SIMPLE_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get, | |
971 | adv_channel_map_set, "%llu\n"); | |
7d474e06 | 972 | |
729a1051 GL |
973 | static int adv_min_interval_set(void *data, u64 val) |
974 | { | |
975 | struct hci_dev *hdev = data; | |
976 | ||
977 | if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval) | |
978 | return -EINVAL; | |
979 | ||
980 | hci_dev_lock(hdev); | |
981 | hdev->le_adv_min_interval = val; | |
7d474e06 AG |
982 | hci_dev_unlock(hdev); |
983 | ||
984 | return 0; | |
985 | } | |
986 | ||
729a1051 | 987 | static int adv_min_interval_get(void *data, u64 *val) |
7d474e06 | 988 | { |
729a1051 GL |
989 | struct hci_dev *hdev = data; |
990 | ||
991 | hci_dev_lock(hdev); | |
992 | *val = hdev->le_adv_min_interval; | |
993 | hci_dev_unlock(hdev); | |
994 | ||
995 | return 0; | |
7d474e06 AG |
996 | } |
997 | ||
729a1051 GL |
998 | DEFINE_SIMPLE_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get, |
999 | adv_min_interval_set, "%llu\n"); | |
1000 | ||
1001 | static int adv_max_interval_set(void *data, u64 val) | |
7d474e06 | 1002 | { |
729a1051 | 1003 | struct hci_dev *hdev = data; |
7d474e06 | 1004 | |
729a1051 | 1005 | if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval) |
7d474e06 AG |
1006 | return -EINVAL; |
1007 | ||
729a1051 GL |
1008 | hci_dev_lock(hdev); |
1009 | hdev->le_adv_max_interval = val; | |
1010 | hci_dev_unlock(hdev); | |
7d474e06 | 1011 | |
729a1051 GL |
1012 | return 0; |
1013 | } | |
7d474e06 | 1014 | |
729a1051 GL |
1015 | static int adv_max_interval_get(void *data, u64 *val) |
1016 | { | |
1017 | struct hci_dev *hdev = data; | |
7d474e06 | 1018 | |
729a1051 GL |
1019 | hci_dev_lock(hdev); |
1020 | *val = hdev->le_adv_max_interval; | |
1021 | hci_dev_unlock(hdev); | |
7d474e06 | 1022 | |
729a1051 GL |
1023 | return 0; |
1024 | } | |
7d474e06 | 1025 | |
729a1051 GL |
1026 | DEFINE_SIMPLE_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get, |
1027 | adv_max_interval_set, "%llu\n"); | |
7d474e06 | 1028 | |
0b3c7d37 | 1029 | static int device_list_show(struct seq_file *f, void *ptr) |
7d474e06 | 1030 | { |
0b3c7d37 | 1031 | struct hci_dev *hdev = f->private; |
7d474e06 | 1032 | struct hci_conn_params *p; |
7d474e06 | 1033 | |
7d474e06 | 1034 | hci_dev_lock(hdev); |
7d474e06 | 1035 | list_for_each_entry(p, &hdev->le_conn_params, list) { |
0b3c7d37 | 1036 | seq_printf(f, "%pMR %u %u\n", &p->addr, p->addr_type, |
7d474e06 | 1037 | p->auto_connect); |
7d474e06 | 1038 | } |
7d474e06 | 1039 | hci_dev_unlock(hdev); |
7d474e06 | 1040 | |
7d474e06 AG |
1041 | return 0; |
1042 | } | |
7d474e06 | 1043 | |
0b3c7d37 | 1044 | static int device_list_open(struct inode *inode, struct file *file) |
7d474e06 | 1045 | { |
0b3c7d37 | 1046 | return single_open(file, device_list_show, inode->i_private); |
7d474e06 AG |
1047 | } |
1048 | ||
0b3c7d37 MH |
1049 | static const struct file_operations device_list_fops = { |
1050 | .open = device_list_open, | |
7d474e06 | 1051 | .read = seq_read, |
7d474e06 AG |
1052 | .llseek = seq_lseek, |
1053 | .release = single_release, | |
1054 | }; | |
1055 | ||
1da177e4 LT |
1056 | /* ---- HCI requests ---- */ |
1057 | ||
42c6b129 | 1058 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result) |
1da177e4 | 1059 | { |
42c6b129 | 1060 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
1da177e4 LT |
1061 | |
1062 | if (hdev->req_status == HCI_REQ_PEND) { | |
1063 | hdev->req_result = result; | |
1064 | hdev->req_status = HCI_REQ_DONE; | |
1065 | wake_up_interruptible(&hdev->req_wait_q); | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
1070 | { | |
1071 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
1072 | ||
1073 | if (hdev->req_status == HCI_REQ_PEND) { | |
1074 | hdev->req_result = err; | |
1075 | hdev->req_status = HCI_REQ_CANCELED; | |
1076 | wake_up_interruptible(&hdev->req_wait_q); | |
1077 | } | |
1078 | } | |
1079 | ||
77a63e0a FW |
1080 | static struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, |
1081 | u8 event) | |
75e84b7c JH |
1082 | { |
1083 | struct hci_ev_cmd_complete *ev; | |
1084 | struct hci_event_hdr *hdr; | |
1085 | struct sk_buff *skb; | |
1086 | ||
1087 | hci_dev_lock(hdev); | |
1088 | ||
1089 | skb = hdev->recv_evt; | |
1090 | hdev->recv_evt = NULL; | |
1091 | ||
1092 | hci_dev_unlock(hdev); | |
1093 | ||
1094 | if (!skb) | |
1095 | return ERR_PTR(-ENODATA); | |
1096 | ||
1097 | if (skb->len < sizeof(*hdr)) { | |
1098 | BT_ERR("Too short HCI event"); | |
1099 | goto failed; | |
1100 | } | |
1101 | ||
1102 | hdr = (void *) skb->data; | |
1103 | skb_pull(skb, HCI_EVENT_HDR_SIZE); | |
1104 | ||
7b1abbbe JH |
1105 | if (event) { |
1106 | if (hdr->evt != event) | |
1107 | goto failed; | |
1108 | return skb; | |
1109 | } | |
1110 | ||
75e84b7c JH |
1111 | if (hdr->evt != HCI_EV_CMD_COMPLETE) { |
1112 | BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt); | |
1113 | goto failed; | |
1114 | } | |
1115 | ||
1116 | if (skb->len < sizeof(*ev)) { | |
1117 | BT_ERR("Too short cmd_complete event"); | |
1118 | goto failed; | |
1119 | } | |
1120 | ||
1121 | ev = (void *) skb->data; | |
1122 | skb_pull(skb, sizeof(*ev)); | |
1123 | ||
1124 | if (opcode == __le16_to_cpu(ev->opcode)) | |
1125 | return skb; | |
1126 | ||
1127 | BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, | |
1128 | __le16_to_cpu(ev->opcode)); | |
1129 | ||
1130 | failed: | |
1131 | kfree_skb(skb); | |
1132 | return ERR_PTR(-ENODATA); | |
1133 | } | |
1134 | ||
7b1abbbe | 1135 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
07dc93dd | 1136 | const void *param, u8 event, u32 timeout) |
75e84b7c JH |
1137 | { |
1138 | DECLARE_WAITQUEUE(wait, current); | |
1139 | struct hci_request req; | |
1140 | int err = 0; | |
1141 | ||
1142 | BT_DBG("%s", hdev->name); | |
1143 | ||
1144 | hci_req_init(&req, hdev); | |
1145 | ||
7b1abbbe | 1146 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
1147 | |
1148 | hdev->req_status = HCI_REQ_PEND; | |
1149 | ||
1150 | err = hci_req_run(&req, hci_req_sync_complete); | |
1151 | if (err < 0) | |
1152 | return ERR_PTR(err); | |
1153 | ||
1154 | add_wait_queue(&hdev->req_wait_q, &wait); | |
1155 | set_current_state(TASK_INTERRUPTIBLE); | |
1156 | ||
1157 | schedule_timeout(timeout); | |
1158 | ||
1159 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
1160 | ||
1161 | if (signal_pending(current)) | |
1162 | return ERR_PTR(-EINTR); | |
1163 | ||
1164 | switch (hdev->req_status) { | |
1165 | case HCI_REQ_DONE: | |
1166 | err = -bt_to_errno(hdev->req_result); | |
1167 | break; | |
1168 | ||
1169 | case HCI_REQ_CANCELED: | |
1170 | err = -hdev->req_result; | |
1171 | break; | |
1172 | ||
1173 | default: | |
1174 | err = -ETIMEDOUT; | |
1175 | break; | |
1176 | } | |
1177 | ||
1178 | hdev->req_status = hdev->req_result = 0; | |
1179 | ||
1180 | BT_DBG("%s end: err %d", hdev->name, err); | |
1181 | ||
1182 | if (err < 0) | |
1183 | return ERR_PTR(err); | |
1184 | ||
7b1abbbe JH |
1185 | return hci_get_cmd_complete(hdev, opcode, event); |
1186 | } | |
1187 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
1188 | ||
1189 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
07dc93dd | 1190 | const void *param, u32 timeout) |
7b1abbbe JH |
1191 | { |
1192 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
1193 | } |
1194 | EXPORT_SYMBOL(__hci_cmd_sync); | |
1195 | ||
1da177e4 | 1196 | /* Execute request and wait for completion. */ |
01178cd4 | 1197 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
1198 | void (*func)(struct hci_request *req, |
1199 | unsigned long opt), | |
01178cd4 | 1200 | unsigned long opt, __u32 timeout) |
1da177e4 | 1201 | { |
42c6b129 | 1202 | struct hci_request req; |
1da177e4 LT |
1203 | DECLARE_WAITQUEUE(wait, current); |
1204 | int err = 0; | |
1205 | ||
1206 | BT_DBG("%s start", hdev->name); | |
1207 | ||
42c6b129 JH |
1208 | hci_req_init(&req, hdev); |
1209 | ||
1da177e4 LT |
1210 | hdev->req_status = HCI_REQ_PEND; |
1211 | ||
42c6b129 | 1212 | func(&req, opt); |
53cce22d | 1213 | |
42c6b129 JH |
1214 | err = hci_req_run(&req, hci_req_sync_complete); |
1215 | if (err < 0) { | |
53cce22d | 1216 | hdev->req_status = 0; |
920c8300 AG |
1217 | |
1218 | /* ENODATA means the HCI request command queue is empty. | |
1219 | * This can happen when a request with conditionals doesn't | |
1220 | * trigger any commands to be sent. This is normal behavior | |
1221 | * and should not trigger an error return. | |
42c6b129 | 1222 | */ |
920c8300 AG |
1223 | if (err == -ENODATA) |
1224 | return 0; | |
1225 | ||
1226 | return err; | |
53cce22d JH |
1227 | } |
1228 | ||
bc4445c7 AG |
1229 | add_wait_queue(&hdev->req_wait_q, &wait); |
1230 | set_current_state(TASK_INTERRUPTIBLE); | |
1231 | ||
1da177e4 LT |
1232 | schedule_timeout(timeout); |
1233 | ||
1234 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
1235 | ||
1236 | if (signal_pending(current)) | |
1237 | return -EINTR; | |
1238 | ||
1239 | switch (hdev->req_status) { | |
1240 | case HCI_REQ_DONE: | |
e175072f | 1241 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
1242 | break; |
1243 | ||
1244 | case HCI_REQ_CANCELED: | |
1245 | err = -hdev->req_result; | |
1246 | break; | |
1247 | ||
1248 | default: | |
1249 | err = -ETIMEDOUT; | |
1250 | break; | |
3ff50b79 | 1251 | } |
1da177e4 | 1252 | |
a5040efa | 1253 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
1254 | |
1255 | BT_DBG("%s end: err %d", hdev->name, err); | |
1256 | ||
1257 | return err; | |
1258 | } | |
1259 | ||
01178cd4 | 1260 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
1261 | void (*req)(struct hci_request *req, |
1262 | unsigned long opt), | |
01178cd4 | 1263 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
1264 | { |
1265 | int ret; | |
1266 | ||
7c6a329e MH |
1267 | if (!test_bit(HCI_UP, &hdev->flags)) |
1268 | return -ENETDOWN; | |
1269 | ||
1da177e4 LT |
1270 | /* Serialize all requests */ |
1271 | hci_req_lock(hdev); | |
01178cd4 | 1272 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
1273 | hci_req_unlock(hdev); |
1274 | ||
1275 | return ret; | |
1276 | } | |
1277 | ||
42c6b129 | 1278 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 1279 | { |
42c6b129 | 1280 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
1281 | |
1282 | /* Reset device */ | |
42c6b129 JH |
1283 | set_bit(HCI_RESET, &req->hdev->flags); |
1284 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
1285 | } |
1286 | ||
42c6b129 | 1287 | static void bredr_init(struct hci_request *req) |
1da177e4 | 1288 | { |
42c6b129 | 1289 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 1290 | |
1da177e4 | 1291 | /* Read Local Supported Features */ |
42c6b129 | 1292 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 1293 | |
1143e5a6 | 1294 | /* Read Local Version */ |
42c6b129 | 1295 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
1296 | |
1297 | /* Read BD Address */ | |
42c6b129 | 1298 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
1299 | } |
1300 | ||
42c6b129 | 1301 | static void amp_init(struct hci_request *req) |
e61ef499 | 1302 | { |
42c6b129 | 1303 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 1304 | |
e61ef499 | 1305 | /* Read Local Version */ |
42c6b129 | 1306 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 1307 | |
f6996cfe MH |
1308 | /* Read Local Supported Commands */ |
1309 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
1310 | ||
1311 | /* Read Local Supported Features */ | |
1312 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
1313 | ||
6bcbc489 | 1314 | /* Read Local AMP Info */ |
42c6b129 | 1315 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
1316 | |
1317 | /* Read Data Blk size */ | |
42c6b129 | 1318 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 1319 | |
f38ba941 MH |
1320 | /* Read Flow Control Mode */ |
1321 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
1322 | ||
7528ca1c MH |
1323 | /* Read Location Data */ |
1324 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
1325 | } |
1326 | ||
42c6b129 | 1327 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 1328 | { |
42c6b129 | 1329 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
1330 | |
1331 | BT_DBG("%s %ld", hdev->name, opt); | |
1332 | ||
11778716 AE |
1333 | /* Reset */ |
1334 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 1335 | hci_reset_req(req, 0); |
11778716 | 1336 | |
e61ef499 AE |
1337 | switch (hdev->dev_type) { |
1338 | case HCI_BREDR: | |
42c6b129 | 1339 | bredr_init(req); |
e61ef499 AE |
1340 | break; |
1341 | ||
1342 | case HCI_AMP: | |
42c6b129 | 1343 | amp_init(req); |
e61ef499 AE |
1344 | break; |
1345 | ||
1346 | default: | |
1347 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
1348 | break; | |
1349 | } | |
e61ef499 AE |
1350 | } |
1351 | ||
42c6b129 | 1352 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 1353 | { |
4ca048e3 MH |
1354 | struct hci_dev *hdev = req->hdev; |
1355 | ||
2177bab5 JH |
1356 | __le16 param; |
1357 | __u8 flt_type; | |
1358 | ||
1359 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 1360 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
1361 | |
1362 | /* Read Class of Device */ | |
42c6b129 | 1363 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
1364 | |
1365 | /* Read Local Name */ | |
42c6b129 | 1366 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
1367 | |
1368 | /* Read Voice Setting */ | |
42c6b129 | 1369 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 1370 | |
b4cb9fb2 MH |
1371 | /* Read Number of Supported IAC */ |
1372 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
1373 | ||
4b836f39 MH |
1374 | /* Read Current IAC LAP */ |
1375 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
1376 | ||
2177bab5 JH |
1377 | /* Clear Event Filters */ |
1378 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 1379 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
1380 | |
1381 | /* Connection accept timeout ~20 secs */ | |
dcf4adbf | 1382 | param = cpu_to_le16(0x7d00); |
42c6b129 | 1383 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 | 1384 | |
4ca048e3 MH |
1385 | /* AVM Berlin (31), aka "BlueFRITZ!", reports version 1.2, |
1386 | * but it does not support page scan related HCI commands. | |
1387 | */ | |
1388 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) { | |
f332ec66 JH |
1389 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); |
1390 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
1391 | } | |
2177bab5 JH |
1392 | } |
1393 | ||
42c6b129 | 1394 | static void le_setup(struct hci_request *req) |
2177bab5 | 1395 | { |
c73eee91 JH |
1396 | struct hci_dev *hdev = req->hdev; |
1397 | ||
2177bab5 | 1398 | /* Read LE Buffer Size */ |
42c6b129 | 1399 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
1400 | |
1401 | /* Read LE Local Supported Features */ | |
42c6b129 | 1402 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 | 1403 | |
747d3f03 MH |
1404 | /* Read LE Supported States */ |
1405 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); | |
1406 | ||
2177bab5 | 1407 | /* Read LE White List Size */ |
42c6b129 | 1408 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 | 1409 | |
747d3f03 MH |
1410 | /* Clear LE White List */ |
1411 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); | |
c73eee91 JH |
1412 | |
1413 | /* LE-only controllers have LE implicitly enabled */ | |
1414 | if (!lmp_bredr_capable(hdev)) | |
1415 | set_bit(HCI_LE_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
1416 | } |
1417 | ||
1418 | static u8 hci_get_inquiry_mode(struct hci_dev *hdev) | |
1419 | { | |
1420 | if (lmp_ext_inq_capable(hdev)) | |
1421 | return 0x02; | |
1422 | ||
1423 | if (lmp_inq_rssi_capable(hdev)) | |
1424 | return 0x01; | |
1425 | ||
1426 | if (hdev->manufacturer == 11 && hdev->hci_rev == 0x00 && | |
1427 | hdev->lmp_subver == 0x0757) | |
1428 | return 0x01; | |
1429 | ||
1430 | if (hdev->manufacturer == 15) { | |
1431 | if (hdev->hci_rev == 0x03 && hdev->lmp_subver == 0x6963) | |
1432 | return 0x01; | |
1433 | if (hdev->hci_rev == 0x09 && hdev->lmp_subver == 0x6963) | |
1434 | return 0x01; | |
1435 | if (hdev->hci_rev == 0x00 && hdev->lmp_subver == 0x6965) | |
1436 | return 0x01; | |
1437 | } | |
1438 | ||
1439 | if (hdev->manufacturer == 31 && hdev->hci_rev == 0x2005 && | |
1440 | hdev->lmp_subver == 0x1805) | |
1441 | return 0x01; | |
1442 | ||
1443 | return 0x00; | |
1444 | } | |
1445 | ||
42c6b129 | 1446 | static void hci_setup_inquiry_mode(struct hci_request *req) |
2177bab5 JH |
1447 | { |
1448 | u8 mode; | |
1449 | ||
42c6b129 | 1450 | mode = hci_get_inquiry_mode(req->hdev); |
2177bab5 | 1451 | |
42c6b129 | 1452 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); |
2177bab5 JH |
1453 | } |
1454 | ||
42c6b129 | 1455 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 1456 | { |
42c6b129 JH |
1457 | struct hci_dev *hdev = req->hdev; |
1458 | ||
2177bab5 JH |
1459 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
1460 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
1461 | * command otherwise. | |
1462 | */ | |
1463 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
1464 | ||
1465 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
1466 | * any event mask for pre 1.2 devices. | |
1467 | */ | |
1468 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
1469 | return; | |
1470 | ||
1471 | if (lmp_bredr_capable(hdev)) { | |
1472 | events[4] |= 0x01; /* Flow Specification Complete */ | |
1473 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
1474 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
1475 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
1476 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
1477 | } else { |
1478 | /* Use a different default for LE-only devices */ | |
1479 | memset(events, 0, sizeof(events)); | |
1480 | events[0] |= 0x10; /* Disconnection Complete */ | |
c7882cbd MH |
1481 | events[1] |= 0x08; /* Read Remote Version Information Complete */ |
1482 | events[1] |= 0x20; /* Command Complete */ | |
1483 | events[1] |= 0x40; /* Command Status */ | |
1484 | events[1] |= 0x80; /* Hardware Error */ | |
1485 | events[2] |= 0x04; /* Number of Completed Packets */ | |
1486 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
0da71f1b MH |
1487 | |
1488 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { | |
1489 | events[0] |= 0x80; /* Encryption Change */ | |
1490 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
1491 | } | |
2177bab5 JH |
1492 | } |
1493 | ||
1494 | if (lmp_inq_rssi_capable(hdev)) | |
1495 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
1496 | ||
1497 | if (lmp_sniffsubr_capable(hdev)) | |
1498 | events[5] |= 0x20; /* Sniff Subrating */ | |
1499 | ||
1500 | if (lmp_pause_enc_capable(hdev)) | |
1501 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
1502 | ||
1503 | if (lmp_ext_inq_capable(hdev)) | |
1504 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
1505 | ||
1506 | if (lmp_no_flush_capable(hdev)) | |
1507 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
1508 | ||
1509 | if (lmp_lsto_capable(hdev)) | |
1510 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
1511 | ||
1512 | if (lmp_ssp_capable(hdev)) { | |
1513 | events[6] |= 0x01; /* IO Capability Request */ | |
1514 | events[6] |= 0x02; /* IO Capability Response */ | |
1515 | events[6] |= 0x04; /* User Confirmation Request */ | |
1516 | events[6] |= 0x08; /* User Passkey Request */ | |
1517 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
1518 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
1519 | events[7] |= 0x04; /* User Passkey Notification */ | |
1520 | events[7] |= 0x08; /* Keypress Notification */ | |
1521 | events[7] |= 0x10; /* Remote Host Supported | |
1522 | * Features Notification | |
1523 | */ | |
1524 | } | |
1525 | ||
1526 | if (lmp_le_capable(hdev)) | |
1527 | events[7] |= 0x20; /* LE Meta-Event */ | |
1528 | ||
42c6b129 | 1529 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
1530 | } |
1531 | ||
42c6b129 | 1532 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 1533 | { |
42c6b129 JH |
1534 | struct hci_dev *hdev = req->hdev; |
1535 | ||
2177bab5 | 1536 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 1537 | bredr_setup(req); |
56f87901 JH |
1538 | else |
1539 | clear_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
1540 | |
1541 | if (lmp_le_capable(hdev)) | |
42c6b129 | 1542 | le_setup(req); |
2177bab5 | 1543 | |
3f8e2d75 JH |
1544 | /* AVM Berlin (31), aka "BlueFRITZ!", doesn't support the read |
1545 | * local supported commands HCI command. | |
1546 | */ | |
1547 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) | |
42c6b129 | 1548 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
1549 | |
1550 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
1551 | /* When SSP is available, then the host features page |
1552 | * should also be available as well. However some | |
1553 | * controllers list the max_page as 0 as long as SSP | |
1554 | * has not been enabled. To achieve proper debugging | |
1555 | * output, force the minimum max_page to 1 at least. | |
1556 | */ | |
1557 | hdev->max_page = 0x01; | |
1558 | ||
2177bab5 JH |
1559 | if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) { |
1560 | u8 mode = 0x01; | |
42c6b129 JH |
1561 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
1562 | sizeof(mode), &mode); | |
2177bab5 JH |
1563 | } else { |
1564 | struct hci_cp_write_eir cp; | |
1565 | ||
1566 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
1567 | memset(&cp, 0, sizeof(cp)); | |
1568 | ||
42c6b129 | 1569 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
1570 | } |
1571 | } | |
1572 | ||
1573 | if (lmp_inq_rssi_capable(hdev)) | |
42c6b129 | 1574 | hci_setup_inquiry_mode(req); |
2177bab5 JH |
1575 | |
1576 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 1577 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
1578 | |
1579 | if (lmp_ext_feat_capable(hdev)) { | |
1580 | struct hci_cp_read_local_ext_features cp; | |
1581 | ||
1582 | cp.page = 0x01; | |
42c6b129 JH |
1583 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
1584 | sizeof(cp), &cp); | |
2177bab5 JH |
1585 | } |
1586 | ||
1587 | if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) { | |
1588 | u8 enable = 1; | |
42c6b129 JH |
1589 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
1590 | &enable); | |
2177bab5 JH |
1591 | } |
1592 | } | |
1593 | ||
42c6b129 | 1594 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 1595 | { |
42c6b129 | 1596 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
1597 | struct hci_cp_write_def_link_policy cp; |
1598 | u16 link_policy = 0; | |
1599 | ||
1600 | if (lmp_rswitch_capable(hdev)) | |
1601 | link_policy |= HCI_LP_RSWITCH; | |
1602 | if (lmp_hold_capable(hdev)) | |
1603 | link_policy |= HCI_LP_HOLD; | |
1604 | if (lmp_sniff_capable(hdev)) | |
1605 | link_policy |= HCI_LP_SNIFF; | |
1606 | if (lmp_park_capable(hdev)) | |
1607 | link_policy |= HCI_LP_PARK; | |
1608 | ||
1609 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 1610 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
1611 | } |
1612 | ||
42c6b129 | 1613 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 1614 | { |
42c6b129 | 1615 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
1616 | struct hci_cp_write_le_host_supported cp; |
1617 | ||
c73eee91 JH |
1618 | /* LE-only devices do not support explicit enablement */ |
1619 | if (!lmp_bredr_capable(hdev)) | |
1620 | return; | |
1621 | ||
2177bab5 JH |
1622 | memset(&cp, 0, sizeof(cp)); |
1623 | ||
1624 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { | |
1625 | cp.le = 0x01; | |
32226e4f | 1626 | cp.simul = 0x00; |
2177bab5 JH |
1627 | } |
1628 | ||
1629 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
1630 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
1631 | &cp); | |
2177bab5 JH |
1632 | } |
1633 | ||
d62e6d67 JH |
1634 | static void hci_set_event_mask_page_2(struct hci_request *req) |
1635 | { | |
1636 | struct hci_dev *hdev = req->hdev; | |
1637 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
1638 | ||
1639 | /* If Connectionless Slave Broadcast master role is supported | |
1640 | * enable all necessary events for it. | |
1641 | */ | |
53b834d2 | 1642 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
1643 | events[1] |= 0x40; /* Triggered Clock Capture */ |
1644 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
1645 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
1646 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
1647 | } | |
1648 | ||
1649 | /* If Connectionless Slave Broadcast slave role is supported | |
1650 | * enable all necessary events for it. | |
1651 | */ | |
53b834d2 | 1652 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
1653 | events[2] |= 0x01; /* Synchronization Train Received */ |
1654 | events[2] |= 0x02; /* CSB Receive */ | |
1655 | events[2] |= 0x04; /* CSB Timeout */ | |
1656 | events[2] |= 0x08; /* Truncated Page Complete */ | |
1657 | } | |
1658 | ||
40c59fcb | 1659 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
cd7ca0ec | 1660 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) |
40c59fcb MH |
1661 | events[2] |= 0x80; |
1662 | ||
d62e6d67 JH |
1663 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
1664 | } | |
1665 | ||
42c6b129 | 1666 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 1667 | { |
42c6b129 | 1668 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 1669 | u8 p; |
42c6b129 | 1670 | |
0da71f1b MH |
1671 | hci_setup_event_mask(req); |
1672 | ||
b8f4e068 GP |
1673 | /* Some Broadcom based Bluetooth controllers do not support the |
1674 | * Delete Stored Link Key command. They are clearly indicating its | |
1675 | * absence in the bit mask of supported commands. | |
1676 | * | |
1677 | * Check the supported commands and only if the the command is marked | |
1678 | * as supported send it. If not supported assume that the controller | |
1679 | * does not have actual support for stored link keys which makes this | |
1680 | * command redundant anyway. | |
f9f462fa MH |
1681 | * |
1682 | * Some controllers indicate that they support handling deleting | |
1683 | * stored link keys, but they don't. The quirk lets a driver | |
1684 | * just disable this command. | |
637b4cae | 1685 | */ |
f9f462fa MH |
1686 | if (hdev->commands[6] & 0x80 && |
1687 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
59f45d57 JH |
1688 | struct hci_cp_delete_stored_link_key cp; |
1689 | ||
1690 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
1691 | cp.delete_all = 0x01; | |
1692 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
1693 | sizeof(cp), &cp); | |
1694 | } | |
1695 | ||
2177bab5 | 1696 | if (hdev->commands[5] & 0x10) |
42c6b129 | 1697 | hci_setup_link_policy(req); |
2177bab5 | 1698 | |
9193c6e8 AG |
1699 | if (lmp_le_capable(hdev)) { |
1700 | u8 events[8]; | |
1701 | ||
1702 | memset(events, 0, sizeof(events)); | |
4d6c705b MH |
1703 | events[0] = 0x0f; |
1704 | ||
1705 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) | |
1706 | events[0] |= 0x10; /* LE Long Term Key Request */ | |
662bc2e6 AG |
1707 | |
1708 | /* If controller supports the Connection Parameters Request | |
1709 | * Link Layer Procedure, enable the corresponding event. | |
1710 | */ | |
1711 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) | |
1712 | events[0] |= 0x20; /* LE Remote Connection | |
1713 | * Parameter Request | |
1714 | */ | |
1715 | ||
9193c6e8 AG |
1716 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), |
1717 | events); | |
1718 | ||
15a49cca MH |
1719 | if (hdev->commands[25] & 0x40) { |
1720 | /* Read LE Advertising Channel TX Power */ | |
1721 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); | |
1722 | } | |
1723 | ||
42c6b129 | 1724 | hci_set_le_support(req); |
9193c6e8 | 1725 | } |
d2c5d77f JH |
1726 | |
1727 | /* Read features beyond page 1 if available */ | |
1728 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
1729 | struct hci_cp_read_local_ext_features cp; | |
1730 | ||
1731 | cp.page = p; | |
1732 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
1733 | sizeof(cp), &cp); | |
1734 | } | |
2177bab5 JH |
1735 | } |
1736 | ||
5d4e7e8d JH |
1737 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
1738 | { | |
1739 | struct hci_dev *hdev = req->hdev; | |
1740 | ||
d62e6d67 JH |
1741 | /* Set event mask page 2 if the HCI command for it is supported */ |
1742 | if (hdev->commands[22] & 0x04) | |
1743 | hci_set_event_mask_page_2(req); | |
1744 | ||
109e3191 MH |
1745 | /* Read local codec list if the HCI command is supported */ |
1746 | if (hdev->commands[29] & 0x20) | |
1747 | hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL); | |
1748 | ||
f4fe73ed MH |
1749 | /* Get MWS transport configuration if the HCI command is supported */ |
1750 | if (hdev->commands[30] & 0x08) | |
1751 | hci_req_add(req, HCI_OP_GET_MWS_TRANSPORT_CONFIG, 0, NULL); | |
1752 | ||
5d4e7e8d | 1753 | /* Check for Synchronization Train support */ |
53b834d2 | 1754 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 1755 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
1756 | |
1757 | /* Enable Secure Connections if supported and configured */ | |
5afeac14 | 1758 | if ((lmp_sc_capable(hdev) || |
111902f7 | 1759 | test_bit(HCI_FORCE_SC, &hdev->dbg_flags)) && |
a6d0d690 MH |
1760 | test_bit(HCI_SC_ENABLED, &hdev->dev_flags)) { |
1761 | u8 support = 0x01; | |
1762 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, | |
1763 | sizeof(support), &support); | |
1764 | } | |
5d4e7e8d JH |
1765 | } |
1766 | ||
2177bab5 JH |
1767 | static int __hci_init(struct hci_dev *hdev) |
1768 | { | |
1769 | int err; | |
1770 | ||
1771 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
1772 | if (err < 0) | |
1773 | return err; | |
1774 | ||
4b4148e9 MH |
1775 | /* The Device Under Test (DUT) mode is special and available for |
1776 | * all controller types. So just create it early on. | |
1777 | */ | |
1778 | if (test_bit(HCI_SETUP, &hdev->dev_flags)) { | |
1779 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, | |
1780 | &dut_mode_fops); | |
1781 | } | |
1782 | ||
2177bab5 JH |
1783 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode |
1784 | * BR/EDR/LE type controllers. AMP controllers only need the | |
1785 | * first stage init. | |
1786 | */ | |
1787 | if (hdev->dev_type != HCI_BREDR) | |
1788 | return 0; | |
1789 | ||
1790 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); | |
1791 | if (err < 0) | |
1792 | return err; | |
1793 | ||
5d4e7e8d JH |
1794 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
1795 | if (err < 0) | |
1796 | return err; | |
1797 | ||
baf27f6e MH |
1798 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); |
1799 | if (err < 0) | |
1800 | return err; | |
1801 | ||
1802 | /* Only create debugfs entries during the initial setup | |
1803 | * phase and not every time the controller gets powered on. | |
1804 | */ | |
1805 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) | |
1806 | return 0; | |
1807 | ||
dfb826a8 MH |
1808 | debugfs_create_file("features", 0444, hdev->debugfs, hdev, |
1809 | &features_fops); | |
ceeb3bc0 MH |
1810 | debugfs_create_u16("manufacturer", 0444, hdev->debugfs, |
1811 | &hdev->manufacturer); | |
1812 | debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver); | |
1813 | debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev); | |
70afe0b8 MH |
1814 | debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev, |
1815 | &blacklist_fops); | |
6659358e JH |
1816 | debugfs_create_file("whitelist", 0444, hdev->debugfs, hdev, |
1817 | &whitelist_fops); | |
47219839 MH |
1818 | debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops); |
1819 | ||
31ad1691 AK |
1820 | debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev, |
1821 | &conn_info_min_age_fops); | |
1822 | debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev, | |
1823 | &conn_info_max_age_fops); | |
1824 | ||
baf27f6e MH |
1825 | if (lmp_bredr_capable(hdev)) { |
1826 | debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, | |
1827 | hdev, &inquiry_cache_fops); | |
02d08d15 MH |
1828 | debugfs_create_file("link_keys", 0400, hdev->debugfs, |
1829 | hdev, &link_keys_fops); | |
babdbb3c MH |
1830 | debugfs_create_file("dev_class", 0444, hdev->debugfs, |
1831 | hdev, &dev_class_fops); | |
041000b9 MH |
1832 | debugfs_create_file("voice_setting", 0444, hdev->debugfs, |
1833 | hdev, &voice_setting_fops); | |
baf27f6e MH |
1834 | } |
1835 | ||
06f5b778 | 1836 | if (lmp_ssp_capable(hdev)) { |
ebd1e33b MH |
1837 | debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs, |
1838 | hdev, &auto_accept_delay_fops); | |
5afeac14 MH |
1839 | debugfs_create_file("force_sc_support", 0644, hdev->debugfs, |
1840 | hdev, &force_sc_support_fops); | |
134c2a89 MH |
1841 | debugfs_create_file("sc_only_mode", 0444, hdev->debugfs, |
1842 | hdev, &sc_only_mode_fops); | |
06f5b778 | 1843 | } |
ebd1e33b | 1844 | |
2bfa3531 MH |
1845 | if (lmp_sniff_capable(hdev)) { |
1846 | debugfs_create_file("idle_timeout", 0644, hdev->debugfs, | |
1847 | hdev, &idle_timeout_fops); | |
1848 | debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs, | |
1849 | hdev, &sniff_min_interval_fops); | |
1850 | debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs, | |
1851 | hdev, &sniff_max_interval_fops); | |
1852 | } | |
1853 | ||
d0f729b8 | 1854 | if (lmp_le_capable(hdev)) { |
ac345813 MH |
1855 | debugfs_create_file("identity", 0400, hdev->debugfs, |
1856 | hdev, &identity_fops); | |
1857 | debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, | |
1858 | hdev, &rpa_timeout_fops); | |
7a4cd51d MH |
1859 | debugfs_create_file("random_address", 0444, hdev->debugfs, |
1860 | hdev, &random_address_fops); | |
b32bba6c MH |
1861 | debugfs_create_file("static_address", 0444, hdev->debugfs, |
1862 | hdev, &static_address_fops); | |
1863 | ||
1864 | /* For controllers with a public address, provide a debug | |
1865 | * option to force the usage of the configured static | |
1866 | * address. By default the public address is used. | |
1867 | */ | |
1868 | if (bacmp(&hdev->bdaddr, BDADDR_ANY)) | |
1869 | debugfs_create_file("force_static_address", 0644, | |
1870 | hdev->debugfs, hdev, | |
1871 | &force_static_address_fops); | |
1872 | ||
d0f729b8 MH |
1873 | debugfs_create_u8("white_list_size", 0444, hdev->debugfs, |
1874 | &hdev->le_white_list_size); | |
d2ab0ac1 MH |
1875 | debugfs_create_file("white_list", 0444, hdev->debugfs, hdev, |
1876 | &white_list_fops); | |
3698d704 MH |
1877 | debugfs_create_file("identity_resolving_keys", 0400, |
1878 | hdev->debugfs, hdev, | |
1879 | &identity_resolving_keys_fops); | |
8f8625cd MH |
1880 | debugfs_create_file("long_term_keys", 0400, hdev->debugfs, |
1881 | hdev, &long_term_keys_fops); | |
4e70c7e7 MH |
1882 | debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, |
1883 | hdev, &conn_min_interval_fops); | |
1884 | debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, | |
1885 | hdev, &conn_max_interval_fops); | |
816a93d1 MH |
1886 | debugfs_create_file("conn_latency", 0644, hdev->debugfs, |
1887 | hdev, &conn_latency_fops); | |
f1649577 MH |
1888 | debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, |
1889 | hdev, &supervision_timeout_fops); | |
3f959d46 MH |
1890 | debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, |
1891 | hdev, &adv_channel_map_fops); | |
729a1051 GL |
1892 | debugfs_create_file("adv_min_interval", 0644, hdev->debugfs, |
1893 | hdev, &adv_min_interval_fops); | |
1894 | debugfs_create_file("adv_max_interval", 0644, hdev->debugfs, | |
1895 | hdev, &adv_max_interval_fops); | |
0b3c7d37 MH |
1896 | debugfs_create_file("device_list", 0444, hdev->debugfs, hdev, |
1897 | &device_list_fops); | |
b9a7a61e LR |
1898 | debugfs_create_u16("discov_interleaved_timeout", 0644, |
1899 | hdev->debugfs, | |
1900 | &hdev->discov_interleaved_timeout); | |
54506918 | 1901 | |
711eafe3 | 1902 | smp_register(hdev); |
d0f729b8 | 1903 | } |
e7b8fc92 | 1904 | |
baf27f6e | 1905 | return 0; |
2177bab5 JH |
1906 | } |
1907 | ||
0ebca7d6 MH |
1908 | static void hci_init0_req(struct hci_request *req, unsigned long opt) |
1909 | { | |
1910 | struct hci_dev *hdev = req->hdev; | |
1911 | ||
1912 | BT_DBG("%s %ld", hdev->name, opt); | |
1913 | ||
1914 | /* Reset */ | |
1915 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
1916 | hci_reset_req(req, 0); | |
1917 | ||
1918 | /* Read Local Version */ | |
1919 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); | |
1920 | ||
1921 | /* Read BD Address */ | |
1922 | if (hdev->set_bdaddr) | |
1923 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); | |
1924 | } | |
1925 | ||
1926 | static int __hci_unconf_init(struct hci_dev *hdev) | |
1927 | { | |
1928 | int err; | |
1929 | ||
cc78b44b MH |
1930 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
1931 | return 0; | |
1932 | ||
0ebca7d6 MH |
1933 | err = __hci_req_sync(hdev, hci_init0_req, 0, HCI_INIT_TIMEOUT); |
1934 | if (err < 0) | |
1935 | return err; | |
1936 | ||
1937 | return 0; | |
1938 | } | |
1939 | ||
42c6b129 | 1940 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1941 | { |
1942 | __u8 scan = opt; | |
1943 | ||
42c6b129 | 1944 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
1945 | |
1946 | /* Inquiry and Page scans */ | |
42c6b129 | 1947 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
1948 | } |
1949 | ||
42c6b129 | 1950 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1951 | { |
1952 | __u8 auth = opt; | |
1953 | ||
42c6b129 | 1954 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
1955 | |
1956 | /* Authentication */ | |
42c6b129 | 1957 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
1958 | } |
1959 | ||
42c6b129 | 1960 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1961 | { |
1962 | __u8 encrypt = opt; | |
1963 | ||
42c6b129 | 1964 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 1965 | |
e4e8e37c | 1966 | /* Encryption */ |
42c6b129 | 1967 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
1968 | } |
1969 | ||
42c6b129 | 1970 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
1971 | { |
1972 | __le16 policy = cpu_to_le16(opt); | |
1973 | ||
42c6b129 | 1974 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
1975 | |
1976 | /* Default link policy */ | |
42c6b129 | 1977 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
1978 | } |
1979 | ||
8e87d142 | 1980 | /* Get HCI device by index. |
1da177e4 LT |
1981 | * Device is held on return. */ |
1982 | struct hci_dev *hci_dev_get(int index) | |
1983 | { | |
8035ded4 | 1984 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
1985 | |
1986 | BT_DBG("%d", index); | |
1987 | ||
1988 | if (index < 0) | |
1989 | return NULL; | |
1990 | ||
1991 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 1992 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
1993 | if (d->id == index) { |
1994 | hdev = hci_dev_hold(d); | |
1995 | break; | |
1996 | } | |
1997 | } | |
1998 | read_unlock(&hci_dev_list_lock); | |
1999 | return hdev; | |
2000 | } | |
1da177e4 LT |
2001 | |
2002 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 2003 | |
30dc78e1 JH |
2004 | bool hci_discovery_active(struct hci_dev *hdev) |
2005 | { | |
2006 | struct discovery_state *discov = &hdev->discovery; | |
2007 | ||
6fbe195d | 2008 | switch (discov->state) { |
343f935b | 2009 | case DISCOVERY_FINDING: |
6fbe195d | 2010 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
2011 | return true; |
2012 | ||
6fbe195d AG |
2013 | default: |
2014 | return false; | |
2015 | } | |
30dc78e1 JH |
2016 | } |
2017 | ||
ff9ef578 JH |
2018 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
2019 | { | |
bb3e0a33 JH |
2020 | int old_state = hdev->discovery.state; |
2021 | ||
ff9ef578 JH |
2022 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); |
2023 | ||
bb3e0a33 | 2024 | if (old_state == state) |
ff9ef578 JH |
2025 | return; |
2026 | ||
bb3e0a33 JH |
2027 | hdev->discovery.state = state; |
2028 | ||
ff9ef578 JH |
2029 | switch (state) { |
2030 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
2031 | hci_update_background_scan(hdev); |
2032 | ||
bb3e0a33 | 2033 | if (old_state != DISCOVERY_STARTING) |
7b99b659 | 2034 | mgmt_discovering(hdev, 0); |
ff9ef578 JH |
2035 | break; |
2036 | case DISCOVERY_STARTING: | |
2037 | break; | |
343f935b | 2038 | case DISCOVERY_FINDING: |
ff9ef578 JH |
2039 | mgmt_discovering(hdev, 1); |
2040 | break; | |
30dc78e1 JH |
2041 | case DISCOVERY_RESOLVING: |
2042 | break; | |
ff9ef578 JH |
2043 | case DISCOVERY_STOPPING: |
2044 | break; | |
2045 | } | |
ff9ef578 JH |
2046 | } |
2047 | ||
1f9b9a5d | 2048 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 2049 | { |
30883512 | 2050 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 2051 | struct inquiry_entry *p, *n; |
1da177e4 | 2052 | |
561aafbc JH |
2053 | list_for_each_entry_safe(p, n, &cache->all, all) { |
2054 | list_del(&p->all); | |
b57c1a56 | 2055 | kfree(p); |
1da177e4 | 2056 | } |
561aafbc JH |
2057 | |
2058 | INIT_LIST_HEAD(&cache->unknown); | |
2059 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
2060 | } |
2061 | ||
a8c5fb1a GP |
2062 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
2063 | bdaddr_t *bdaddr) | |
1da177e4 | 2064 | { |
30883512 | 2065 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
2066 | struct inquiry_entry *e; |
2067 | ||
6ed93dc6 | 2068 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 2069 | |
561aafbc JH |
2070 | list_for_each_entry(e, &cache->all, all) { |
2071 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
2072 | return e; | |
2073 | } | |
2074 | ||
2075 | return NULL; | |
2076 | } | |
2077 | ||
2078 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 2079 | bdaddr_t *bdaddr) |
561aafbc | 2080 | { |
30883512 | 2081 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
2082 | struct inquiry_entry *e; |
2083 | ||
6ed93dc6 | 2084 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
2085 | |
2086 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 2087 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
2088 | return e; |
2089 | } | |
2090 | ||
2091 | return NULL; | |
1da177e4 LT |
2092 | } |
2093 | ||
30dc78e1 | 2094 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
2095 | bdaddr_t *bdaddr, |
2096 | int state) | |
30dc78e1 JH |
2097 | { |
2098 | struct discovery_state *cache = &hdev->discovery; | |
2099 | struct inquiry_entry *e; | |
2100 | ||
6ed93dc6 | 2101 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
2102 | |
2103 | list_for_each_entry(e, &cache->resolve, list) { | |
2104 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
2105 | return e; | |
2106 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
2107 | return e; | |
2108 | } | |
2109 | ||
2110 | return NULL; | |
2111 | } | |
2112 | ||
a3d4e20a | 2113 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 2114 | struct inquiry_entry *ie) |
a3d4e20a JH |
2115 | { |
2116 | struct discovery_state *cache = &hdev->discovery; | |
2117 | struct list_head *pos = &cache->resolve; | |
2118 | struct inquiry_entry *p; | |
2119 | ||
2120 | list_del(&ie->list); | |
2121 | ||
2122 | list_for_each_entry(p, &cache->resolve, list) { | |
2123 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 2124 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
2125 | break; |
2126 | pos = &p->list; | |
2127 | } | |
2128 | ||
2129 | list_add(&ie->list, pos); | |
2130 | } | |
2131 | ||
af58925c MH |
2132 | u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
2133 | bool name_known) | |
1da177e4 | 2134 | { |
30883512 | 2135 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 2136 | struct inquiry_entry *ie; |
af58925c | 2137 | u32 flags = 0; |
1da177e4 | 2138 | |
6ed93dc6 | 2139 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 2140 | |
2b2fec4d SJ |
2141 | hci_remove_remote_oob_data(hdev, &data->bdaddr); |
2142 | ||
af58925c MH |
2143 | if (!data->ssp_mode) |
2144 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 2145 | |
70f23020 | 2146 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 2147 | if (ie) { |
af58925c MH |
2148 | if (!ie->data.ssp_mode) |
2149 | flags |= MGMT_DEV_FOUND_LEGACY_PAIRING; | |
388fc8fa | 2150 | |
a3d4e20a | 2151 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 2152 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
2153 | ie->data.rssi = data->rssi; |
2154 | hci_inquiry_cache_update_resolve(hdev, ie); | |
2155 | } | |
2156 | ||
561aafbc | 2157 | goto update; |
a3d4e20a | 2158 | } |
561aafbc JH |
2159 | |
2160 | /* Entry not in the cache. Add new one. */ | |
27f70f3e | 2161 | ie = kzalloc(sizeof(*ie), GFP_KERNEL); |
af58925c MH |
2162 | if (!ie) { |
2163 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; | |
2164 | goto done; | |
2165 | } | |
561aafbc JH |
2166 | |
2167 | list_add(&ie->all, &cache->all); | |
2168 | ||
2169 | if (name_known) { | |
2170 | ie->name_state = NAME_KNOWN; | |
2171 | } else { | |
2172 | ie->name_state = NAME_NOT_KNOWN; | |
2173 | list_add(&ie->list, &cache->unknown); | |
2174 | } | |
70f23020 | 2175 | |
561aafbc JH |
2176 | update: |
2177 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 2178 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
2179 | ie->name_state = NAME_KNOWN; |
2180 | list_del(&ie->list); | |
1da177e4 LT |
2181 | } |
2182 | ||
70f23020 AE |
2183 | memcpy(&ie->data, data, sizeof(*data)); |
2184 | ie->timestamp = jiffies; | |
1da177e4 | 2185 | cache->timestamp = jiffies; |
3175405b JH |
2186 | |
2187 | if (ie->name_state == NAME_NOT_KNOWN) | |
af58925c | 2188 | flags |= MGMT_DEV_FOUND_CONFIRM_NAME; |
3175405b | 2189 | |
af58925c MH |
2190 | done: |
2191 | return flags; | |
1da177e4 LT |
2192 | } |
2193 | ||
2194 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
2195 | { | |
30883512 | 2196 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
2197 | struct inquiry_info *info = (struct inquiry_info *) buf; |
2198 | struct inquiry_entry *e; | |
2199 | int copied = 0; | |
2200 | ||
561aafbc | 2201 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 2202 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
2203 | |
2204 | if (copied >= num) | |
2205 | break; | |
2206 | ||
1da177e4 LT |
2207 | bacpy(&info->bdaddr, &data->bdaddr); |
2208 | info->pscan_rep_mode = data->pscan_rep_mode; | |
2209 | info->pscan_period_mode = data->pscan_period_mode; | |
2210 | info->pscan_mode = data->pscan_mode; | |
2211 | memcpy(info->dev_class, data->dev_class, 3); | |
2212 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 2213 | |
1da177e4 | 2214 | info++; |
b57c1a56 | 2215 | copied++; |
1da177e4 LT |
2216 | } |
2217 | ||
2218 | BT_DBG("cache %p, copied %d", cache, copied); | |
2219 | return copied; | |
2220 | } | |
2221 | ||
42c6b129 | 2222 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
2223 | { |
2224 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 2225 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
2226 | struct hci_cp_inquiry cp; |
2227 | ||
2228 | BT_DBG("%s", hdev->name); | |
2229 | ||
2230 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
2231 | return; | |
2232 | ||
2233 | /* Start Inquiry */ | |
2234 | memcpy(&cp.lap, &ir->lap, 3); | |
2235 | cp.length = ir->length; | |
2236 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 2237 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
2238 | } |
2239 | ||
2240 | int hci_inquiry(void __user *arg) | |
2241 | { | |
2242 | __u8 __user *ptr = arg; | |
2243 | struct hci_inquiry_req ir; | |
2244 | struct hci_dev *hdev; | |
2245 | int err = 0, do_inquiry = 0, max_rsp; | |
2246 | long timeo; | |
2247 | __u8 *buf; | |
2248 | ||
2249 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
2250 | return -EFAULT; | |
2251 | ||
5a08ecce AE |
2252 | hdev = hci_dev_get(ir.dev_id); |
2253 | if (!hdev) | |
1da177e4 LT |
2254 | return -ENODEV; |
2255 | ||
0736cfa8 MH |
2256 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2257 | err = -EBUSY; | |
2258 | goto done; | |
2259 | } | |
2260 | ||
4a964404 | 2261 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
fee746b0 MH |
2262 | err = -EOPNOTSUPP; |
2263 | goto done; | |
2264 | } | |
2265 | ||
5b69bef5 MH |
2266 | if (hdev->dev_type != HCI_BREDR) { |
2267 | err = -EOPNOTSUPP; | |
2268 | goto done; | |
2269 | } | |
2270 | ||
56f87901 JH |
2271 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
2272 | err = -EOPNOTSUPP; | |
2273 | goto done; | |
2274 | } | |
2275 | ||
09fd0de5 | 2276 | hci_dev_lock(hdev); |
8e87d142 | 2277 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 2278 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 2279 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
2280 | do_inquiry = 1; |
2281 | } | |
09fd0de5 | 2282 | hci_dev_unlock(hdev); |
1da177e4 | 2283 | |
04837f64 | 2284 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
2285 | |
2286 | if (do_inquiry) { | |
01178cd4 JH |
2287 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
2288 | timeo); | |
70f23020 AE |
2289 | if (err < 0) |
2290 | goto done; | |
3e13fa1e AG |
2291 | |
2292 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
2293 | * cleared). If it is interrupted by a signal, return -EINTR. | |
2294 | */ | |
74316201 | 2295 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, |
3e13fa1e AG |
2296 | TASK_INTERRUPTIBLE)) |
2297 | return -EINTR; | |
70f23020 | 2298 | } |
1da177e4 | 2299 | |
8fc9ced3 GP |
2300 | /* for unlimited number of responses we will use buffer with |
2301 | * 255 entries | |
2302 | */ | |
1da177e4 LT |
2303 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
2304 | ||
2305 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
2306 | * copy it to the user space. | |
2307 | */ | |
01df8c31 | 2308 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 2309 | if (!buf) { |
1da177e4 LT |
2310 | err = -ENOMEM; |
2311 | goto done; | |
2312 | } | |
2313 | ||
09fd0de5 | 2314 | hci_dev_lock(hdev); |
1da177e4 | 2315 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 2316 | hci_dev_unlock(hdev); |
1da177e4 LT |
2317 | |
2318 | BT_DBG("num_rsp %d", ir.num_rsp); | |
2319 | ||
2320 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
2321 | ptr += sizeof(ir); | |
2322 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 2323 | ir.num_rsp)) |
1da177e4 | 2324 | err = -EFAULT; |
8e87d142 | 2325 | } else |
1da177e4 LT |
2326 | err = -EFAULT; |
2327 | ||
2328 | kfree(buf); | |
2329 | ||
2330 | done: | |
2331 | hci_dev_put(hdev); | |
2332 | return err; | |
2333 | } | |
2334 | ||
cbed0ca1 | 2335 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 2336 | { |
1da177e4 LT |
2337 | int ret = 0; |
2338 | ||
1da177e4 LT |
2339 | BT_DBG("%s %p", hdev->name, hdev); |
2340 | ||
2341 | hci_req_lock(hdev); | |
2342 | ||
94324962 JH |
2343 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
2344 | ret = -ENODEV; | |
2345 | goto done; | |
2346 | } | |
2347 | ||
d603b76b MH |
2348 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
2349 | !test_bit(HCI_CONFIG, &hdev->dev_flags)) { | |
a5c8f270 MH |
2350 | /* Check for rfkill but allow the HCI setup stage to |
2351 | * proceed (which in itself doesn't cause any RF activity). | |
2352 | */ | |
2353 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags)) { | |
2354 | ret = -ERFKILL; | |
2355 | goto done; | |
2356 | } | |
2357 | ||
2358 | /* Check for valid public address or a configured static | |
2359 | * random adddress, but let the HCI setup proceed to | |
2360 | * be able to determine if there is a public address | |
2361 | * or not. | |
2362 | * | |
c6beca0e MH |
2363 | * In case of user channel usage, it is not important |
2364 | * if a public address or static random address is | |
2365 | * available. | |
2366 | * | |
a5c8f270 MH |
2367 | * This check is only valid for BR/EDR controllers |
2368 | * since AMP controllers do not have an address. | |
2369 | */ | |
c6beca0e MH |
2370 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
2371 | hdev->dev_type == HCI_BREDR && | |
a5c8f270 MH |
2372 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
2373 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
2374 | ret = -EADDRNOTAVAIL; | |
2375 | goto done; | |
2376 | } | |
611b30f7 MH |
2377 | } |
2378 | ||
1da177e4 LT |
2379 | if (test_bit(HCI_UP, &hdev->flags)) { |
2380 | ret = -EALREADY; | |
2381 | goto done; | |
2382 | } | |
2383 | ||
1da177e4 LT |
2384 | if (hdev->open(hdev)) { |
2385 | ret = -EIO; | |
2386 | goto done; | |
2387 | } | |
2388 | ||
f41c70c4 MH |
2389 | atomic_set(&hdev->cmd_cnt, 1); |
2390 | set_bit(HCI_INIT, &hdev->flags); | |
2391 | ||
af202f84 MH |
2392 | if (test_bit(HCI_SETUP, &hdev->dev_flags)) { |
2393 | if (hdev->setup) | |
2394 | ret = hdev->setup(hdev); | |
f41c70c4 | 2395 | |
af202f84 MH |
2396 | /* The transport driver can set these quirks before |
2397 | * creating the HCI device or in its setup callback. | |
2398 | * | |
2399 | * In case any of them is set, the controller has to | |
2400 | * start up as unconfigured. | |
2401 | */ | |
eb1904f4 MH |
2402 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || |
2403 | test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks)) | |
89bc22d2 | 2404 | set_bit(HCI_UNCONFIGURED, &hdev->dev_flags); |
f41c70c4 | 2405 | |
0ebca7d6 MH |
2406 | /* For an unconfigured controller it is required to |
2407 | * read at least the version information provided by | |
2408 | * the Read Local Version Information command. | |
2409 | * | |
2410 | * If the set_bdaddr driver callback is provided, then | |
2411 | * also the original Bluetooth public device address | |
2412 | * will be read using the Read BD Address command. | |
2413 | */ | |
2414 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) | |
2415 | ret = __hci_unconf_init(hdev); | |
89bc22d2 MH |
2416 | } |
2417 | ||
9713c17b MH |
2418 | if (test_bit(HCI_CONFIG, &hdev->dev_flags)) { |
2419 | /* If public address change is configured, ensure that | |
2420 | * the address gets programmed. If the driver does not | |
2421 | * support changing the public address, fail the power | |
2422 | * on procedure. | |
2423 | */ | |
2424 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
2425 | hdev->set_bdaddr) | |
24c457e2 MH |
2426 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); |
2427 | else | |
2428 | ret = -EADDRNOTAVAIL; | |
2429 | } | |
2430 | ||
f41c70c4 | 2431 | if (!ret) { |
4a964404 | 2432 | if (!test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) && |
0736cfa8 | 2433 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
f41c70c4 | 2434 | ret = __hci_init(hdev); |
1da177e4 LT |
2435 | } |
2436 | ||
f41c70c4 MH |
2437 | clear_bit(HCI_INIT, &hdev->flags); |
2438 | ||
1da177e4 LT |
2439 | if (!ret) { |
2440 | hci_dev_hold(hdev); | |
d6bfd59c | 2441 | set_bit(HCI_RPA_EXPIRED, &hdev->dev_flags); |
1da177e4 LT |
2442 | set_bit(HCI_UP, &hdev->flags); |
2443 | hci_notify(hdev, HCI_DEV_UP); | |
bb4b2a9a | 2444 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
d603b76b | 2445 | !test_bit(HCI_CONFIG, &hdev->dev_flags) && |
4a964404 | 2446 | !test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) && |
0736cfa8 | 2447 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
1514b892 | 2448 | hdev->dev_type == HCI_BREDR) { |
09fd0de5 | 2449 | hci_dev_lock(hdev); |
744cf19e | 2450 | mgmt_powered(hdev, 1); |
09fd0de5 | 2451 | hci_dev_unlock(hdev); |
56e5cb86 | 2452 | } |
8e87d142 | 2453 | } else { |
1da177e4 | 2454 | /* Init failed, cleanup */ |
3eff45ea | 2455 | flush_work(&hdev->tx_work); |
c347b765 | 2456 | flush_work(&hdev->cmd_work); |
b78752cc | 2457 | flush_work(&hdev->rx_work); |
1da177e4 LT |
2458 | |
2459 | skb_queue_purge(&hdev->cmd_q); | |
2460 | skb_queue_purge(&hdev->rx_q); | |
2461 | ||
2462 | if (hdev->flush) | |
2463 | hdev->flush(hdev); | |
2464 | ||
2465 | if (hdev->sent_cmd) { | |
2466 | kfree_skb(hdev->sent_cmd); | |
2467 | hdev->sent_cmd = NULL; | |
2468 | } | |
2469 | ||
2470 | hdev->close(hdev); | |
fee746b0 | 2471 | hdev->flags &= BIT(HCI_RAW); |
1da177e4 LT |
2472 | } |
2473 | ||
2474 | done: | |
2475 | hci_req_unlock(hdev); | |
1da177e4 LT |
2476 | return ret; |
2477 | } | |
2478 | ||
cbed0ca1 JH |
2479 | /* ---- HCI ioctl helpers ---- */ |
2480 | ||
2481 | int hci_dev_open(__u16 dev) | |
2482 | { | |
2483 | struct hci_dev *hdev; | |
2484 | int err; | |
2485 | ||
2486 | hdev = hci_dev_get(dev); | |
2487 | if (!hdev) | |
2488 | return -ENODEV; | |
2489 | ||
4a964404 | 2490 | /* Devices that are marked as unconfigured can only be powered |
fee746b0 MH |
2491 | * up as user channel. Trying to bring them up as normal devices |
2492 | * will result into a failure. Only user channel operation is | |
2493 | * possible. | |
2494 | * | |
2495 | * When this function is called for a user channel, the flag | |
2496 | * HCI_USER_CHANNEL will be set first before attempting to | |
2497 | * open the device. | |
2498 | */ | |
4a964404 | 2499 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) && |
fee746b0 MH |
2500 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2501 | err = -EOPNOTSUPP; | |
2502 | goto done; | |
2503 | } | |
2504 | ||
e1d08f40 JH |
2505 | /* We need to ensure that no other power on/off work is pending |
2506 | * before proceeding to call hci_dev_do_open. This is | |
2507 | * particularly important if the setup procedure has not yet | |
2508 | * completed. | |
2509 | */ | |
2510 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
2511 | cancel_delayed_work(&hdev->power_off); | |
2512 | ||
a5c8f270 MH |
2513 | /* After this call it is guaranteed that the setup procedure |
2514 | * has finished. This means that error conditions like RFKILL | |
2515 | * or no valid public or static random address apply. | |
2516 | */ | |
e1d08f40 JH |
2517 | flush_workqueue(hdev->req_workqueue); |
2518 | ||
12aa4f0a | 2519 | /* For controllers not using the management interface and that |
b6ae8457 | 2520 | * are brought up using legacy ioctl, set the HCI_BONDABLE bit |
12aa4f0a MH |
2521 | * so that pairing works for them. Once the management interface |
2522 | * is in use this bit will be cleared again and userspace has | |
2523 | * to explicitly enable it. | |
2524 | */ | |
2525 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && | |
2526 | !test_bit(HCI_MGMT, &hdev->dev_flags)) | |
b6ae8457 | 2527 | set_bit(HCI_BONDABLE, &hdev->dev_flags); |
12aa4f0a | 2528 | |
cbed0ca1 JH |
2529 | err = hci_dev_do_open(hdev); |
2530 | ||
fee746b0 | 2531 | done: |
cbed0ca1 | 2532 | hci_dev_put(hdev); |
cbed0ca1 JH |
2533 | return err; |
2534 | } | |
2535 | ||
d7347f3c JH |
2536 | /* This function requires the caller holds hdev->lock */ |
2537 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) | |
2538 | { | |
2539 | struct hci_conn_params *p; | |
2540 | ||
2541 | list_for_each_entry(p, &hdev->le_conn_params, list) | |
2542 | list_del_init(&p->action); | |
2543 | ||
2544 | BT_DBG("All LE pending actions cleared"); | |
2545 | } | |
2546 | ||
1da177e4 LT |
2547 | static int hci_dev_do_close(struct hci_dev *hdev) |
2548 | { | |
2549 | BT_DBG("%s %p", hdev->name, hdev); | |
2550 | ||
78c04c0b VCG |
2551 | cancel_delayed_work(&hdev->power_off); |
2552 | ||
1da177e4 LT |
2553 | hci_req_cancel(hdev, ENODEV); |
2554 | hci_req_lock(hdev); | |
2555 | ||
2556 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
65cc2b49 | 2557 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
2558 | hci_req_unlock(hdev); |
2559 | return 0; | |
2560 | } | |
2561 | ||
3eff45ea GP |
2562 | /* Flush RX and TX works */ |
2563 | flush_work(&hdev->tx_work); | |
b78752cc | 2564 | flush_work(&hdev->rx_work); |
1da177e4 | 2565 | |
16ab91ab | 2566 | if (hdev->discov_timeout > 0) { |
e0f9309f | 2567 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 2568 | hdev->discov_timeout = 0; |
5e5282bb | 2569 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
310a3d48 | 2570 | clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
2571 | } |
2572 | ||
a8b2d5c2 | 2573 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
2574 | cancel_delayed_work(&hdev->service_cache); |
2575 | ||
7ba8b4be | 2576 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
4518bb0f JH |
2577 | |
2578 | if (test_bit(HCI_MGMT, &hdev->dev_flags)) | |
2579 | cancel_delayed_work_sync(&hdev->rpa_expired); | |
7ba8b4be | 2580 | |
09fd0de5 | 2581 | hci_dev_lock(hdev); |
1f9b9a5d | 2582 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 2583 | hci_conn_hash_flush(hdev); |
d7347f3c | 2584 | hci_pend_le_actions_clear(hdev); |
09fd0de5 | 2585 | hci_dev_unlock(hdev); |
1da177e4 LT |
2586 | |
2587 | hci_notify(hdev, HCI_DEV_DOWN); | |
2588 | ||
2589 | if (hdev->flush) | |
2590 | hdev->flush(hdev); | |
2591 | ||
2592 | /* Reset device */ | |
2593 | skb_queue_purge(&hdev->cmd_q); | |
2594 | atomic_set(&hdev->cmd_cnt, 1); | |
4a964404 MH |
2595 | if (!test_bit(HCI_AUTO_OFF, &hdev->dev_flags) && |
2596 | !test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) && | |
a6c511c6 | 2597 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 2598 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 2599 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
2600 | clear_bit(HCI_INIT, &hdev->flags); |
2601 | } | |
2602 | ||
c347b765 GP |
2603 | /* flush cmd work */ |
2604 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
2605 | |
2606 | /* Drop queues */ | |
2607 | skb_queue_purge(&hdev->rx_q); | |
2608 | skb_queue_purge(&hdev->cmd_q); | |
2609 | skb_queue_purge(&hdev->raw_q); | |
2610 | ||
2611 | /* Drop last sent command */ | |
2612 | if (hdev->sent_cmd) { | |
65cc2b49 | 2613 | cancel_delayed_work_sync(&hdev->cmd_timer); |
1da177e4 LT |
2614 | kfree_skb(hdev->sent_cmd); |
2615 | hdev->sent_cmd = NULL; | |
2616 | } | |
2617 | ||
b6ddb638 JH |
2618 | kfree_skb(hdev->recv_evt); |
2619 | hdev->recv_evt = NULL; | |
2620 | ||
1da177e4 LT |
2621 | /* After this point our queues are empty |
2622 | * and no tasks are scheduled. */ | |
2623 | hdev->close(hdev); | |
2624 | ||
35b973c9 | 2625 | /* Clear flags */ |
fee746b0 | 2626 | hdev->flags &= BIT(HCI_RAW); |
35b973c9 JH |
2627 | hdev->dev_flags &= ~HCI_PERSISTENT_MASK; |
2628 | ||
93c311a0 MH |
2629 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { |
2630 | if (hdev->dev_type == HCI_BREDR) { | |
2631 | hci_dev_lock(hdev); | |
2632 | mgmt_powered(hdev, 0); | |
2633 | hci_dev_unlock(hdev); | |
2634 | } | |
8ee56540 | 2635 | } |
5add6af8 | 2636 | |
ced5c338 | 2637 | /* Controller radio is available but is currently powered down */ |
536619e8 | 2638 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 2639 | |
e59fda8d | 2640 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 2641 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 2642 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 2643 | |
1da177e4 LT |
2644 | hci_req_unlock(hdev); |
2645 | ||
2646 | hci_dev_put(hdev); | |
2647 | return 0; | |
2648 | } | |
2649 | ||
2650 | int hci_dev_close(__u16 dev) | |
2651 | { | |
2652 | struct hci_dev *hdev; | |
2653 | int err; | |
2654 | ||
70f23020 AE |
2655 | hdev = hci_dev_get(dev); |
2656 | if (!hdev) | |
1da177e4 | 2657 | return -ENODEV; |
8ee56540 | 2658 | |
0736cfa8 MH |
2659 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2660 | err = -EBUSY; | |
2661 | goto done; | |
2662 | } | |
2663 | ||
8ee56540 MH |
2664 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
2665 | cancel_delayed_work(&hdev->power_off); | |
2666 | ||
1da177e4 | 2667 | err = hci_dev_do_close(hdev); |
8ee56540 | 2668 | |
0736cfa8 | 2669 | done: |
1da177e4 LT |
2670 | hci_dev_put(hdev); |
2671 | return err; | |
2672 | } | |
2673 | ||
2674 | int hci_dev_reset(__u16 dev) | |
2675 | { | |
2676 | struct hci_dev *hdev; | |
2677 | int ret = 0; | |
2678 | ||
70f23020 AE |
2679 | hdev = hci_dev_get(dev); |
2680 | if (!hdev) | |
1da177e4 LT |
2681 | return -ENODEV; |
2682 | ||
2683 | hci_req_lock(hdev); | |
1da177e4 | 2684 | |
808a049e MH |
2685 | if (!test_bit(HCI_UP, &hdev->flags)) { |
2686 | ret = -ENETDOWN; | |
1da177e4 | 2687 | goto done; |
808a049e | 2688 | } |
1da177e4 | 2689 | |
0736cfa8 MH |
2690 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2691 | ret = -EBUSY; | |
2692 | goto done; | |
2693 | } | |
2694 | ||
4a964404 | 2695 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
fee746b0 MH |
2696 | ret = -EOPNOTSUPP; |
2697 | goto done; | |
2698 | } | |
2699 | ||
1da177e4 LT |
2700 | /* Drop queues */ |
2701 | skb_queue_purge(&hdev->rx_q); | |
2702 | skb_queue_purge(&hdev->cmd_q); | |
2703 | ||
09fd0de5 | 2704 | hci_dev_lock(hdev); |
1f9b9a5d | 2705 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 2706 | hci_conn_hash_flush(hdev); |
09fd0de5 | 2707 | hci_dev_unlock(hdev); |
1da177e4 LT |
2708 | |
2709 | if (hdev->flush) | |
2710 | hdev->flush(hdev); | |
2711 | ||
8e87d142 | 2712 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 2713 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 | 2714 | |
fee746b0 | 2715 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
2716 | |
2717 | done: | |
1da177e4 LT |
2718 | hci_req_unlock(hdev); |
2719 | hci_dev_put(hdev); | |
2720 | return ret; | |
2721 | } | |
2722 | ||
2723 | int hci_dev_reset_stat(__u16 dev) | |
2724 | { | |
2725 | struct hci_dev *hdev; | |
2726 | int ret = 0; | |
2727 | ||
70f23020 AE |
2728 | hdev = hci_dev_get(dev); |
2729 | if (!hdev) | |
1da177e4 LT |
2730 | return -ENODEV; |
2731 | ||
0736cfa8 MH |
2732 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2733 | ret = -EBUSY; | |
2734 | goto done; | |
2735 | } | |
2736 | ||
4a964404 | 2737 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
fee746b0 MH |
2738 | ret = -EOPNOTSUPP; |
2739 | goto done; | |
2740 | } | |
2741 | ||
1da177e4 LT |
2742 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
2743 | ||
0736cfa8 | 2744 | done: |
1da177e4 | 2745 | hci_dev_put(hdev); |
1da177e4 LT |
2746 | return ret; |
2747 | } | |
2748 | ||
123abc08 JH |
2749 | static void hci_update_scan_state(struct hci_dev *hdev, u8 scan) |
2750 | { | |
bc6d2d04 | 2751 | bool conn_changed, discov_changed; |
123abc08 JH |
2752 | |
2753 | BT_DBG("%s scan 0x%02x", hdev->name, scan); | |
2754 | ||
2755 | if ((scan & SCAN_PAGE)) | |
2756 | conn_changed = !test_and_set_bit(HCI_CONNECTABLE, | |
2757 | &hdev->dev_flags); | |
2758 | else | |
2759 | conn_changed = test_and_clear_bit(HCI_CONNECTABLE, | |
2760 | &hdev->dev_flags); | |
2761 | ||
bc6d2d04 JH |
2762 | if ((scan & SCAN_INQUIRY)) { |
2763 | discov_changed = !test_and_set_bit(HCI_DISCOVERABLE, | |
2764 | &hdev->dev_flags); | |
2765 | } else { | |
2766 | clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags); | |
2767 | discov_changed = test_and_clear_bit(HCI_DISCOVERABLE, | |
2768 | &hdev->dev_flags); | |
2769 | } | |
2770 | ||
123abc08 JH |
2771 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
2772 | return; | |
2773 | ||
bc6d2d04 JH |
2774 | if (conn_changed || discov_changed) { |
2775 | /* In case this was disabled through mgmt */ | |
2776 | set_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
2777 | ||
2778 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) | |
2779 | mgmt_update_adv_data(hdev); | |
2780 | ||
123abc08 | 2781 | mgmt_new_settings(hdev); |
bc6d2d04 | 2782 | } |
123abc08 JH |
2783 | } |
2784 | ||
1da177e4 LT |
2785 | int hci_dev_cmd(unsigned int cmd, void __user *arg) |
2786 | { | |
2787 | struct hci_dev *hdev; | |
2788 | struct hci_dev_req dr; | |
2789 | int err = 0; | |
2790 | ||
2791 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
2792 | return -EFAULT; | |
2793 | ||
70f23020 AE |
2794 | hdev = hci_dev_get(dr.dev_id); |
2795 | if (!hdev) | |
1da177e4 LT |
2796 | return -ENODEV; |
2797 | ||
0736cfa8 MH |
2798 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2799 | err = -EBUSY; | |
2800 | goto done; | |
2801 | } | |
2802 | ||
4a964404 | 2803 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
fee746b0 MH |
2804 | err = -EOPNOTSUPP; |
2805 | goto done; | |
2806 | } | |
2807 | ||
5b69bef5 MH |
2808 | if (hdev->dev_type != HCI_BREDR) { |
2809 | err = -EOPNOTSUPP; | |
2810 | goto done; | |
2811 | } | |
2812 | ||
56f87901 JH |
2813 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
2814 | err = -EOPNOTSUPP; | |
2815 | goto done; | |
2816 | } | |
2817 | ||
1da177e4 LT |
2818 | switch (cmd) { |
2819 | case HCISETAUTH: | |
01178cd4 JH |
2820 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
2821 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2822 | break; |
2823 | ||
2824 | case HCISETENCRYPT: | |
2825 | if (!lmp_encrypt_capable(hdev)) { | |
2826 | err = -EOPNOTSUPP; | |
2827 | break; | |
2828 | } | |
2829 | ||
2830 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
2831 | /* Auth must be enabled first */ | |
01178cd4 JH |
2832 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
2833 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2834 | if (err) |
2835 | break; | |
2836 | } | |
2837 | ||
01178cd4 JH |
2838 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
2839 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2840 | break; |
2841 | ||
2842 | case HCISETSCAN: | |
01178cd4 JH |
2843 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
2844 | HCI_INIT_TIMEOUT); | |
91a668b0 | 2845 | |
bc6d2d04 JH |
2846 | /* Ensure that the connectable and discoverable states |
2847 | * get correctly modified as this was a non-mgmt change. | |
91a668b0 | 2848 | */ |
123abc08 JH |
2849 | if (!err) |
2850 | hci_update_scan_state(hdev, dr.dev_opt); | |
1da177e4 LT |
2851 | break; |
2852 | ||
1da177e4 | 2853 | case HCISETLINKPOL: |
01178cd4 JH |
2854 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
2855 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2856 | break; |
2857 | ||
2858 | case HCISETLINKMODE: | |
e4e8e37c MH |
2859 | hdev->link_mode = ((__u16) dr.dev_opt) & |
2860 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
2861 | break; | |
2862 | ||
2863 | case HCISETPTYPE: | |
2864 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
2865 | break; |
2866 | ||
2867 | case HCISETACLMTU: | |
e4e8e37c MH |
2868 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
2869 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
2870 | break; |
2871 | ||
2872 | case HCISETSCOMTU: | |
e4e8e37c MH |
2873 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
2874 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
2875 | break; |
2876 | ||
2877 | default: | |
2878 | err = -EINVAL; | |
2879 | break; | |
2880 | } | |
e4e8e37c | 2881 | |
0736cfa8 | 2882 | done: |
1da177e4 LT |
2883 | hci_dev_put(hdev); |
2884 | return err; | |
2885 | } | |
2886 | ||
2887 | int hci_get_dev_list(void __user *arg) | |
2888 | { | |
8035ded4 | 2889 | struct hci_dev *hdev; |
1da177e4 LT |
2890 | struct hci_dev_list_req *dl; |
2891 | struct hci_dev_req *dr; | |
1da177e4 LT |
2892 | int n = 0, size, err; |
2893 | __u16 dev_num; | |
2894 | ||
2895 | if (get_user(dev_num, (__u16 __user *) arg)) | |
2896 | return -EFAULT; | |
2897 | ||
2898 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
2899 | return -EINVAL; | |
2900 | ||
2901 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
2902 | ||
70f23020 AE |
2903 | dl = kzalloc(size, GFP_KERNEL); |
2904 | if (!dl) | |
1da177e4 LT |
2905 | return -ENOMEM; |
2906 | ||
2907 | dr = dl->dev_req; | |
2908 | ||
f20d09d5 | 2909 | read_lock(&hci_dev_list_lock); |
8035ded4 | 2910 | list_for_each_entry(hdev, &hci_dev_list, list) { |
2e84d8db | 2911 | unsigned long flags = hdev->flags; |
c542a06c | 2912 | |
2e84d8db MH |
2913 | /* When the auto-off is configured it means the transport |
2914 | * is running, but in that case still indicate that the | |
2915 | * device is actually down. | |
2916 | */ | |
2917 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
2918 | flags &= ~BIT(HCI_UP); | |
c542a06c | 2919 | |
1da177e4 | 2920 | (dr + n)->dev_id = hdev->id; |
2e84d8db | 2921 | (dr + n)->dev_opt = flags; |
c542a06c | 2922 | |
1da177e4 LT |
2923 | if (++n >= dev_num) |
2924 | break; | |
2925 | } | |
f20d09d5 | 2926 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2927 | |
2928 | dl->dev_num = n; | |
2929 | size = sizeof(*dl) + n * sizeof(*dr); | |
2930 | ||
2931 | err = copy_to_user(arg, dl, size); | |
2932 | kfree(dl); | |
2933 | ||
2934 | return err ? -EFAULT : 0; | |
2935 | } | |
2936 | ||
2937 | int hci_get_dev_info(void __user *arg) | |
2938 | { | |
2939 | struct hci_dev *hdev; | |
2940 | struct hci_dev_info di; | |
2e84d8db | 2941 | unsigned long flags; |
1da177e4 LT |
2942 | int err = 0; |
2943 | ||
2944 | if (copy_from_user(&di, arg, sizeof(di))) | |
2945 | return -EFAULT; | |
2946 | ||
70f23020 AE |
2947 | hdev = hci_dev_get(di.dev_id); |
2948 | if (!hdev) | |
1da177e4 LT |
2949 | return -ENODEV; |
2950 | ||
2e84d8db MH |
2951 | /* When the auto-off is configured it means the transport |
2952 | * is running, but in that case still indicate that the | |
2953 | * device is actually down. | |
2954 | */ | |
2955 | if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
2956 | flags = hdev->flags & ~BIT(HCI_UP); | |
2957 | else | |
2958 | flags = hdev->flags; | |
c542a06c | 2959 | |
1da177e4 LT |
2960 | strcpy(di.name, hdev->name); |
2961 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 2962 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
2e84d8db | 2963 | di.flags = flags; |
1da177e4 | 2964 | di.pkt_type = hdev->pkt_type; |
572c7f84 JH |
2965 | if (lmp_bredr_capable(hdev)) { |
2966 | di.acl_mtu = hdev->acl_mtu; | |
2967 | di.acl_pkts = hdev->acl_pkts; | |
2968 | di.sco_mtu = hdev->sco_mtu; | |
2969 | di.sco_pkts = hdev->sco_pkts; | |
2970 | } else { | |
2971 | di.acl_mtu = hdev->le_mtu; | |
2972 | di.acl_pkts = hdev->le_pkts; | |
2973 | di.sco_mtu = 0; | |
2974 | di.sco_pkts = 0; | |
2975 | } | |
1da177e4 LT |
2976 | di.link_policy = hdev->link_policy; |
2977 | di.link_mode = hdev->link_mode; | |
2978 | ||
2979 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
2980 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
2981 | ||
2982 | if (copy_to_user(arg, &di, sizeof(di))) | |
2983 | err = -EFAULT; | |
2984 | ||
2985 | hci_dev_put(hdev); | |
2986 | ||
2987 | return err; | |
2988 | } | |
2989 | ||
2990 | /* ---- Interface to HCI drivers ---- */ | |
2991 | ||
611b30f7 MH |
2992 | static int hci_rfkill_set_block(void *data, bool blocked) |
2993 | { | |
2994 | struct hci_dev *hdev = data; | |
2995 | ||
2996 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
2997 | ||
0736cfa8 MH |
2998 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
2999 | return -EBUSY; | |
3000 | ||
5e130367 JH |
3001 | if (blocked) { |
3002 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
d603b76b MH |
3003 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
3004 | !test_bit(HCI_CONFIG, &hdev->dev_flags)) | |
bf543036 | 3005 | hci_dev_do_close(hdev); |
5e130367 JH |
3006 | } else { |
3007 | clear_bit(HCI_RFKILLED, &hdev->dev_flags); | |
1025c04c | 3008 | } |
611b30f7 MH |
3009 | |
3010 | return 0; | |
3011 | } | |
3012 | ||
3013 | static const struct rfkill_ops hci_rfkill_ops = { | |
3014 | .set_block = hci_rfkill_set_block, | |
3015 | }; | |
3016 | ||
ab81cbf9 JH |
3017 | static void hci_power_on(struct work_struct *work) |
3018 | { | |
3019 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 3020 | int err; |
ab81cbf9 JH |
3021 | |
3022 | BT_DBG("%s", hdev->name); | |
3023 | ||
cbed0ca1 | 3024 | err = hci_dev_do_open(hdev); |
96570ffc JH |
3025 | if (err < 0) { |
3026 | mgmt_set_powered_failed(hdev, err); | |
ab81cbf9 | 3027 | return; |
96570ffc | 3028 | } |
ab81cbf9 | 3029 | |
a5c8f270 MH |
3030 | /* During the HCI setup phase, a few error conditions are |
3031 | * ignored and they need to be checked now. If they are still | |
3032 | * valid, it is important to turn the device back off. | |
3033 | */ | |
3034 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags) || | |
4a964404 | 3035 | test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) || |
a5c8f270 MH |
3036 | (hdev->dev_type == HCI_BREDR && |
3037 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
3038 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
bf543036 JH |
3039 | clear_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
3040 | hci_dev_do_close(hdev); | |
3041 | } else if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { | |
19202573 JH |
3042 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
3043 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 3044 | } |
ab81cbf9 | 3045 | |
fee746b0 | 3046 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) { |
4a964404 MH |
3047 | /* For unconfigured devices, set the HCI_RAW flag |
3048 | * so that userspace can easily identify them. | |
4a964404 MH |
3049 | */ |
3050 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) | |
3051 | set_bit(HCI_RAW, &hdev->flags); | |
0602a8ad MH |
3052 | |
3053 | /* For fully configured devices, this will send | |
3054 | * the Index Added event. For unconfigured devices, | |
3055 | * it will send Unconfigued Index Added event. | |
3056 | * | |
3057 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
3058 | * and no event will be send. | |
3059 | */ | |
3060 | mgmt_index_added(hdev); | |
d603b76b | 3061 | } else if (test_and_clear_bit(HCI_CONFIG, &hdev->dev_flags)) { |
5ea234d3 MH |
3062 | /* When the controller is now configured, then it |
3063 | * is important to clear the HCI_RAW flag. | |
3064 | */ | |
3065 | if (!test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) | |
3066 | clear_bit(HCI_RAW, &hdev->flags); | |
3067 | ||
d603b76b MH |
3068 | /* Powering on the controller with HCI_CONFIG set only |
3069 | * happens with the transition from unconfigured to | |
3070 | * configured. This will send the Index Added event. | |
3071 | */ | |
744cf19e | 3072 | mgmt_index_added(hdev); |
fee746b0 | 3073 | } |
ab81cbf9 JH |
3074 | } |
3075 | ||
3076 | static void hci_power_off(struct work_struct *work) | |
3077 | { | |
3243553f | 3078 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 3079 | power_off.work); |
ab81cbf9 JH |
3080 | |
3081 | BT_DBG("%s", hdev->name); | |
3082 | ||
8ee56540 | 3083 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
3084 | } |
3085 | ||
16ab91ab JH |
3086 | static void hci_discov_off(struct work_struct *work) |
3087 | { | |
3088 | struct hci_dev *hdev; | |
16ab91ab JH |
3089 | |
3090 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
3091 | ||
3092 | BT_DBG("%s", hdev->name); | |
3093 | ||
d1967ff8 | 3094 | mgmt_discoverable_timeout(hdev); |
16ab91ab JH |
3095 | } |
3096 | ||
35f7498a | 3097 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 3098 | { |
4821002c | 3099 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 3100 | |
4821002c JH |
3101 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
3102 | list_del(&uuid->list); | |
2aeb9a1a JH |
3103 | kfree(uuid); |
3104 | } | |
2aeb9a1a JH |
3105 | } |
3106 | ||
35f7498a | 3107 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 JH |
3108 | { |
3109 | struct list_head *p, *n; | |
3110 | ||
3111 | list_for_each_safe(p, n, &hdev->link_keys) { | |
3112 | struct link_key *key; | |
3113 | ||
3114 | key = list_entry(p, struct link_key, list); | |
3115 | ||
3116 | list_del(p); | |
3117 | kfree(key); | |
3118 | } | |
55ed8ca1 JH |
3119 | } |
3120 | ||
35f7498a | 3121 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf VCG |
3122 | { |
3123 | struct smp_ltk *k, *tmp; | |
3124 | ||
3125 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
3126 | list_del(&k->list); | |
3127 | kfree(k); | |
3128 | } | |
b899efaf VCG |
3129 | } |
3130 | ||
970c4e46 JH |
3131 | void hci_smp_irks_clear(struct hci_dev *hdev) |
3132 | { | |
3133 | struct smp_irk *k, *tmp; | |
3134 | ||
3135 | list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) { | |
3136 | list_del(&k->list); | |
3137 | kfree(k); | |
3138 | } | |
3139 | } | |
3140 | ||
55ed8ca1 JH |
3141 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
3142 | { | |
8035ded4 | 3143 | struct link_key *k; |
55ed8ca1 | 3144 | |
8035ded4 | 3145 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
3146 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
3147 | return k; | |
55ed8ca1 JH |
3148 | |
3149 | return NULL; | |
3150 | } | |
3151 | ||
745c0ce3 | 3152 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 3153 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
3154 | { |
3155 | /* Legacy key */ | |
3156 | if (key_type < 0x03) | |
745c0ce3 | 3157 | return true; |
d25e28ab JH |
3158 | |
3159 | /* Debug keys are insecure so don't store them persistently */ | |
3160 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 3161 | return false; |
d25e28ab JH |
3162 | |
3163 | /* Changed combination key and there's no previous one */ | |
3164 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 3165 | return false; |
d25e28ab JH |
3166 | |
3167 | /* Security mode 3 case */ | |
3168 | if (!conn) | |
745c0ce3 | 3169 | return true; |
d25e28ab JH |
3170 | |
3171 | /* Neither local nor remote side had no-bonding as requirement */ | |
3172 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 3173 | return true; |
d25e28ab JH |
3174 | |
3175 | /* Local side had dedicated bonding as requirement */ | |
3176 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 3177 | return true; |
d25e28ab JH |
3178 | |
3179 | /* Remote side had dedicated bonding as requirement */ | |
3180 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 3181 | return true; |
d25e28ab JH |
3182 | |
3183 | /* If none of the above criteria match, then don't store the key | |
3184 | * persistently */ | |
745c0ce3 | 3185 | return false; |
d25e28ab JH |
3186 | } |
3187 | ||
e804d25d | 3188 | static u8 ltk_role(u8 type) |
98a0b845 | 3189 | { |
e804d25d JH |
3190 | if (type == SMP_LTK) |
3191 | return HCI_ROLE_MASTER; | |
98a0b845 | 3192 | |
e804d25d | 3193 | return HCI_ROLE_SLAVE; |
98a0b845 JH |
3194 | } |
3195 | ||
fe39c7b2 | 3196 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, __le64 rand, |
e804d25d | 3197 | u8 role) |
75d262c2 | 3198 | { |
c9839a11 | 3199 | struct smp_ltk *k; |
75d262c2 | 3200 | |
c9839a11 | 3201 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
fe39c7b2 | 3202 | if (k->ediv != ediv || k->rand != rand) |
75d262c2 VCG |
3203 | continue; |
3204 | ||
e804d25d | 3205 | if (ltk_role(k->type) != role) |
98a0b845 JH |
3206 | continue; |
3207 | ||
c9839a11 | 3208 | return k; |
75d262c2 VCG |
3209 | } |
3210 | ||
3211 | return NULL; | |
3212 | } | |
75d262c2 | 3213 | |
c9839a11 | 3214 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
e804d25d | 3215 | u8 addr_type, u8 role) |
75d262c2 | 3216 | { |
c9839a11 | 3217 | struct smp_ltk *k; |
75d262c2 | 3218 | |
c9839a11 VCG |
3219 | list_for_each_entry(k, &hdev->long_term_keys, list) |
3220 | if (addr_type == k->bdaddr_type && | |
98a0b845 | 3221 | bacmp(bdaddr, &k->bdaddr) == 0 && |
e804d25d | 3222 | ltk_role(k->type) == role) |
75d262c2 VCG |
3223 | return k; |
3224 | ||
3225 | return NULL; | |
3226 | } | |
75d262c2 | 3227 | |
970c4e46 JH |
3228 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
3229 | { | |
3230 | struct smp_irk *irk; | |
3231 | ||
3232 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { | |
3233 | if (!bacmp(&irk->rpa, rpa)) | |
3234 | return irk; | |
3235 | } | |
3236 | ||
3237 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { | |
defce9e8 | 3238 | if (smp_irk_matches(hdev, irk->val, rpa)) { |
970c4e46 JH |
3239 | bacpy(&irk->rpa, rpa); |
3240 | return irk; | |
3241 | } | |
3242 | } | |
3243 | ||
3244 | return NULL; | |
3245 | } | |
3246 | ||
3247 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3248 | u8 addr_type) | |
3249 | { | |
3250 | struct smp_irk *irk; | |
3251 | ||
6cfc9988 JH |
3252 | /* Identity Address must be public or static random */ |
3253 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
3254 | return NULL; | |
3255 | ||
970c4e46 JH |
3256 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { |
3257 | if (addr_type == irk->addr_type && | |
3258 | bacmp(bdaddr, &irk->bdaddr) == 0) | |
3259 | return irk; | |
3260 | } | |
3261 | ||
3262 | return NULL; | |
3263 | } | |
3264 | ||
567fa2aa | 3265 | struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, |
7652ff6a JH |
3266 | bdaddr_t *bdaddr, u8 *val, u8 type, |
3267 | u8 pin_len, bool *persistent) | |
55ed8ca1 JH |
3268 | { |
3269 | struct link_key *key, *old_key; | |
745c0ce3 | 3270 | u8 old_key_type; |
55ed8ca1 JH |
3271 | |
3272 | old_key = hci_find_link_key(hdev, bdaddr); | |
3273 | if (old_key) { | |
3274 | old_key_type = old_key->type; | |
3275 | key = old_key; | |
3276 | } else { | |
12adcf3a | 3277 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 3278 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 | 3279 | if (!key) |
567fa2aa | 3280 | return NULL; |
55ed8ca1 JH |
3281 | list_add(&key->list, &hdev->link_keys); |
3282 | } | |
3283 | ||
6ed93dc6 | 3284 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 3285 | |
d25e28ab JH |
3286 | /* Some buggy controller combinations generate a changed |
3287 | * combination key for legacy pairing even when there's no | |
3288 | * previous key */ | |
3289 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 3290 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 3291 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
3292 | if (conn) |
3293 | conn->key_type = type; | |
3294 | } | |
d25e28ab | 3295 | |
55ed8ca1 | 3296 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 3297 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
3298 | key->pin_len = pin_len; |
3299 | ||
b6020ba0 | 3300 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 3301 | key->type = old_key_type; |
4748fed2 JH |
3302 | else |
3303 | key->type = type; | |
3304 | ||
7652ff6a JH |
3305 | if (persistent) |
3306 | *persistent = hci_persistent_key(hdev, conn, type, | |
3307 | old_key_type); | |
4df378a1 | 3308 | |
567fa2aa | 3309 | return key; |
55ed8ca1 JH |
3310 | } |
3311 | ||
ca9142b8 | 3312 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 3313 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 3314 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 3315 | { |
c9839a11 | 3316 | struct smp_ltk *key, *old_key; |
e804d25d | 3317 | u8 role = ltk_role(type); |
75d262c2 | 3318 | |
e804d25d | 3319 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type, role); |
c9839a11 | 3320 | if (old_key) |
75d262c2 | 3321 | key = old_key; |
c9839a11 | 3322 | else { |
0a14ab41 | 3323 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 3324 | if (!key) |
ca9142b8 | 3325 | return NULL; |
c9839a11 | 3326 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
3327 | } |
3328 | ||
75d262c2 | 3329 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
3330 | key->bdaddr_type = addr_type; |
3331 | memcpy(key->val, tk, sizeof(key->val)); | |
3332 | key->authenticated = authenticated; | |
3333 | key->ediv = ediv; | |
fe39c7b2 | 3334 | key->rand = rand; |
c9839a11 VCG |
3335 | key->enc_size = enc_size; |
3336 | key->type = type; | |
75d262c2 | 3337 | |
ca9142b8 | 3338 | return key; |
75d262c2 VCG |
3339 | } |
3340 | ||
ca9142b8 JH |
3341 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
3342 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
3343 | { |
3344 | struct smp_irk *irk; | |
3345 | ||
3346 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
3347 | if (!irk) { | |
3348 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
3349 | if (!irk) | |
ca9142b8 | 3350 | return NULL; |
970c4e46 JH |
3351 | |
3352 | bacpy(&irk->bdaddr, bdaddr); | |
3353 | irk->addr_type = addr_type; | |
3354 | ||
3355 | list_add(&irk->list, &hdev->identity_resolving_keys); | |
3356 | } | |
3357 | ||
3358 | memcpy(irk->val, val, 16); | |
3359 | bacpy(&irk->rpa, rpa); | |
3360 | ||
ca9142b8 | 3361 | return irk; |
970c4e46 JH |
3362 | } |
3363 | ||
55ed8ca1 JH |
3364 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
3365 | { | |
3366 | struct link_key *key; | |
3367 | ||
3368 | key = hci_find_link_key(hdev, bdaddr); | |
3369 | if (!key) | |
3370 | return -ENOENT; | |
3371 | ||
6ed93dc6 | 3372 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 JH |
3373 | |
3374 | list_del(&key->list); | |
3375 | kfree(key); | |
3376 | ||
3377 | return 0; | |
3378 | } | |
3379 | ||
e0b2b27e | 3380 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf VCG |
3381 | { |
3382 | struct smp_ltk *k, *tmp; | |
c51ffa0b | 3383 | int removed = 0; |
b899efaf VCG |
3384 | |
3385 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
e0b2b27e | 3386 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
3387 | continue; |
3388 | ||
6ed93dc6 | 3389 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf VCG |
3390 | |
3391 | list_del(&k->list); | |
3392 | kfree(k); | |
c51ffa0b | 3393 | removed++; |
b899efaf VCG |
3394 | } |
3395 | ||
c51ffa0b | 3396 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
3397 | } |
3398 | ||
a7ec7338 JH |
3399 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
3400 | { | |
3401 | struct smp_irk *k, *tmp; | |
3402 | ||
668b7b19 | 3403 | list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
3404 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
3405 | continue; | |
3406 | ||
3407 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
3408 | ||
3409 | list_del(&k->list); | |
3410 | kfree(k); | |
3411 | } | |
3412 | } | |
3413 | ||
6bd32326 | 3414 | /* HCI command timer function */ |
65cc2b49 | 3415 | static void hci_cmd_timeout(struct work_struct *work) |
6bd32326 | 3416 | { |
65cc2b49 MH |
3417 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
3418 | cmd_timer.work); | |
6bd32326 | 3419 | |
bda4f23a AE |
3420 | if (hdev->sent_cmd) { |
3421 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
3422 | u16 opcode = __le16_to_cpu(sent->opcode); | |
3423 | ||
3424 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
3425 | } else { | |
3426 | BT_ERR("%s command tx timeout", hdev->name); | |
3427 | } | |
3428 | ||
6bd32326 | 3429 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 3430 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
3431 | } |
3432 | ||
2763eda6 | 3433 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 3434 | bdaddr_t *bdaddr) |
2763eda6 SJ |
3435 | { |
3436 | struct oob_data *data; | |
3437 | ||
3438 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
3439 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
3440 | return data; | |
3441 | ||
3442 | return NULL; | |
3443 | } | |
3444 | ||
3445 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
3446 | { | |
3447 | struct oob_data *data; | |
3448 | ||
3449 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
3450 | if (!data) | |
3451 | return -ENOENT; | |
3452 | ||
6ed93dc6 | 3453 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
3454 | |
3455 | list_del(&data->list); | |
3456 | kfree(data); | |
3457 | ||
3458 | return 0; | |
3459 | } | |
3460 | ||
35f7498a | 3461 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
3462 | { |
3463 | struct oob_data *data, *n; | |
3464 | ||
3465 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
3466 | list_del(&data->list); | |
3467 | kfree(data); | |
3468 | } | |
2763eda6 SJ |
3469 | } |
3470 | ||
0798872e MH |
3471 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
3472 | u8 *hash, u8 *randomizer) | |
2763eda6 SJ |
3473 | { |
3474 | struct oob_data *data; | |
3475 | ||
3476 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
2763eda6 | 3477 | if (!data) { |
0a14ab41 | 3478 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
3479 | if (!data) |
3480 | return -ENOMEM; | |
3481 | ||
3482 | bacpy(&data->bdaddr, bdaddr); | |
3483 | list_add(&data->list, &hdev->remote_oob_data); | |
3484 | } | |
3485 | ||
519ca9d0 MH |
3486 | memcpy(data->hash192, hash, sizeof(data->hash192)); |
3487 | memcpy(data->randomizer192, randomizer, sizeof(data->randomizer192)); | |
2763eda6 | 3488 | |
0798872e MH |
3489 | memset(data->hash256, 0, sizeof(data->hash256)); |
3490 | memset(data->randomizer256, 0, sizeof(data->randomizer256)); | |
3491 | ||
3492 | BT_DBG("%s for %pMR", hdev->name, bdaddr); | |
3493 | ||
3494 | return 0; | |
3495 | } | |
3496 | ||
3497 | int hci_add_remote_oob_ext_data(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3498 | u8 *hash192, u8 *randomizer192, | |
3499 | u8 *hash256, u8 *randomizer256) | |
3500 | { | |
3501 | struct oob_data *data; | |
3502 | ||
3503 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
3504 | if (!data) { | |
0a14ab41 | 3505 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
0798872e MH |
3506 | if (!data) |
3507 | return -ENOMEM; | |
3508 | ||
3509 | bacpy(&data->bdaddr, bdaddr); | |
3510 | list_add(&data->list, &hdev->remote_oob_data); | |
3511 | } | |
3512 | ||
3513 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
3514 | memcpy(data->randomizer192, randomizer192, sizeof(data->randomizer192)); | |
3515 | ||
3516 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
3517 | memcpy(data->randomizer256, randomizer256, sizeof(data->randomizer256)); | |
3518 | ||
6ed93dc6 | 3519 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
3520 | |
3521 | return 0; | |
3522 | } | |
3523 | ||
dcc36c16 | 3524 | struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *bdaddr_list, |
b9ee0a78 | 3525 | bdaddr_t *bdaddr, u8 type) |
b2a66aad | 3526 | { |
8035ded4 | 3527 | struct bdaddr_list *b; |
b2a66aad | 3528 | |
dcc36c16 | 3529 | list_for_each_entry(b, bdaddr_list, list) { |
b9ee0a78 | 3530 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) |
b2a66aad | 3531 | return b; |
b9ee0a78 | 3532 | } |
b2a66aad AJ |
3533 | |
3534 | return NULL; | |
3535 | } | |
3536 | ||
dcc36c16 | 3537 | void hci_bdaddr_list_clear(struct list_head *bdaddr_list) |
b2a66aad AJ |
3538 | { |
3539 | struct list_head *p, *n; | |
3540 | ||
dcc36c16 | 3541 | list_for_each_safe(p, n, bdaddr_list) { |
b9ee0a78 | 3542 | struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list); |
b2a66aad AJ |
3543 | |
3544 | list_del(p); | |
3545 | kfree(b); | |
3546 | } | |
b2a66aad AJ |
3547 | } |
3548 | ||
dcc36c16 | 3549 | int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
3550 | { |
3551 | struct bdaddr_list *entry; | |
b2a66aad | 3552 | |
b9ee0a78 | 3553 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
3554 | return -EBADF; |
3555 | ||
dcc36c16 | 3556 | if (hci_bdaddr_list_lookup(list, bdaddr, type)) |
5e762444 | 3557 | return -EEXIST; |
b2a66aad | 3558 | |
27f70f3e | 3559 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
5e762444 AJ |
3560 | if (!entry) |
3561 | return -ENOMEM; | |
b2a66aad AJ |
3562 | |
3563 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 3564 | entry->bdaddr_type = type; |
b2a66aad | 3565 | |
dcc36c16 | 3566 | list_add(&entry->list, list); |
b2a66aad | 3567 | |
2a8357f2 | 3568 | return 0; |
b2a66aad AJ |
3569 | } |
3570 | ||
dcc36c16 | 3571 | int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
3572 | { |
3573 | struct bdaddr_list *entry; | |
b2a66aad | 3574 | |
35f7498a | 3575 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
dcc36c16 | 3576 | hci_bdaddr_list_clear(list); |
35f7498a JH |
3577 | return 0; |
3578 | } | |
b2a66aad | 3579 | |
dcc36c16 | 3580 | entry = hci_bdaddr_list_lookup(list, bdaddr, type); |
d2ab0ac1 MH |
3581 | if (!entry) |
3582 | return -ENOENT; | |
3583 | ||
3584 | list_del(&entry->list); | |
3585 | kfree(entry); | |
3586 | ||
3587 | return 0; | |
3588 | } | |
3589 | ||
15819a70 AG |
3590 | /* This function requires the caller holds hdev->lock */ |
3591 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
3592 | bdaddr_t *addr, u8 addr_type) | |
3593 | { | |
3594 | struct hci_conn_params *params; | |
3595 | ||
738f6185 JH |
3596 | /* The conn params list only contains identity addresses */ |
3597 | if (!hci_is_identity_address(addr, addr_type)) | |
3598 | return NULL; | |
3599 | ||
15819a70 AG |
3600 | list_for_each_entry(params, &hdev->le_conn_params, list) { |
3601 | if (bacmp(¶ms->addr, addr) == 0 && | |
3602 | params->addr_type == addr_type) { | |
3603 | return params; | |
3604 | } | |
3605 | } | |
3606 | ||
3607 | return NULL; | |
3608 | } | |
3609 | ||
cef952ce AG |
3610 | static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type) |
3611 | { | |
3612 | struct hci_conn *conn; | |
3613 | ||
3614 | conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr); | |
3615 | if (!conn) | |
3616 | return false; | |
3617 | ||
3618 | if (conn->dst_type != type) | |
3619 | return false; | |
3620 | ||
3621 | if (conn->state != BT_CONNECTED) | |
3622 | return false; | |
3623 | ||
3624 | return true; | |
3625 | } | |
3626 | ||
4b10966f | 3627 | /* This function requires the caller holds hdev->lock */ |
501f8827 JH |
3628 | struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, |
3629 | bdaddr_t *addr, u8 addr_type) | |
a9b0a04c | 3630 | { |
912b42ef | 3631 | struct hci_conn_params *param; |
a9b0a04c | 3632 | |
738f6185 JH |
3633 | /* The list only contains identity addresses */ |
3634 | if (!hci_is_identity_address(addr, addr_type)) | |
3635 | return NULL; | |
a9b0a04c | 3636 | |
501f8827 | 3637 | list_for_each_entry(param, list, action) { |
912b42ef JH |
3638 | if (bacmp(¶m->addr, addr) == 0 && |
3639 | param->addr_type == addr_type) | |
3640 | return param; | |
4b10966f MH |
3641 | } |
3642 | ||
3643 | return NULL; | |
a9b0a04c AG |
3644 | } |
3645 | ||
15819a70 | 3646 | /* This function requires the caller holds hdev->lock */ |
51d167c0 MH |
3647 | struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, |
3648 | bdaddr_t *addr, u8 addr_type) | |
15819a70 AG |
3649 | { |
3650 | struct hci_conn_params *params; | |
3651 | ||
c46245b3 | 3652 | if (!hci_is_identity_address(addr, addr_type)) |
51d167c0 | 3653 | return NULL; |
a9b0a04c | 3654 | |
15819a70 | 3655 | params = hci_conn_params_lookup(hdev, addr, addr_type); |
cef952ce | 3656 | if (params) |
51d167c0 | 3657 | return params; |
15819a70 AG |
3658 | |
3659 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
3660 | if (!params) { | |
3661 | BT_ERR("Out of memory"); | |
51d167c0 | 3662 | return NULL; |
15819a70 AG |
3663 | } |
3664 | ||
3665 | bacpy(¶ms->addr, addr); | |
3666 | params->addr_type = addr_type; | |
cef952ce AG |
3667 | |
3668 | list_add(¶ms->list, &hdev->le_conn_params); | |
93450c75 | 3669 | INIT_LIST_HEAD(¶ms->action); |
cef952ce | 3670 | |
bf5b3c8b MH |
3671 | params->conn_min_interval = hdev->le_conn_min_interval; |
3672 | params->conn_max_interval = hdev->le_conn_max_interval; | |
3673 | params->conn_latency = hdev->le_conn_latency; | |
3674 | params->supervision_timeout = hdev->le_supv_timeout; | |
3675 | params->auto_connect = HCI_AUTO_CONN_DISABLED; | |
3676 | ||
3677 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
3678 | ||
51d167c0 | 3679 | return params; |
bf5b3c8b MH |
3680 | } |
3681 | ||
3682 | /* This function requires the caller holds hdev->lock */ | |
3683 | int hci_conn_params_set(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type, | |
d06b50ce | 3684 | u8 auto_connect) |
15819a70 AG |
3685 | { |
3686 | struct hci_conn_params *params; | |
3687 | ||
8c87aae1 MH |
3688 | params = hci_conn_params_add(hdev, addr, addr_type); |
3689 | if (!params) | |
3690 | return -EIO; | |
cef952ce | 3691 | |
42ce26de JH |
3692 | if (params->auto_connect == auto_connect) |
3693 | return 0; | |
3694 | ||
95305baa | 3695 | list_del_init(¶ms->action); |
15819a70 | 3696 | |
cef952ce AG |
3697 | switch (auto_connect) { |
3698 | case HCI_AUTO_CONN_DISABLED: | |
3699 | case HCI_AUTO_CONN_LINK_LOSS: | |
95305baa | 3700 | hci_update_background_scan(hdev); |
cef952ce | 3701 | break; |
851efca8 | 3702 | case HCI_AUTO_CONN_REPORT: |
95305baa JH |
3703 | list_add(¶ms->action, &hdev->pend_le_reports); |
3704 | hci_update_background_scan(hdev); | |
cef952ce | 3705 | break; |
4b9e7e75 | 3706 | case HCI_AUTO_CONN_DIRECT: |
cef952ce | 3707 | case HCI_AUTO_CONN_ALWAYS: |
95305baa JH |
3708 | if (!is_connected(hdev, addr, addr_type)) { |
3709 | list_add(¶ms->action, &hdev->pend_le_conns); | |
3710 | hci_update_background_scan(hdev); | |
3711 | } | |
cef952ce AG |
3712 | break; |
3713 | } | |
15819a70 | 3714 | |
851efca8 JH |
3715 | params->auto_connect = auto_connect; |
3716 | ||
d06b50ce MH |
3717 | BT_DBG("addr %pMR (type %u) auto_connect %u", addr, addr_type, |
3718 | auto_connect); | |
a9b0a04c AG |
3719 | |
3720 | return 0; | |
15819a70 AG |
3721 | } |
3722 | ||
3723 | /* This function requires the caller holds hdev->lock */ | |
3724 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
3725 | { | |
3726 | struct hci_conn_params *params; | |
3727 | ||
3728 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
3729 | if (!params) | |
3730 | return; | |
3731 | ||
95305baa | 3732 | list_del(¶ms->action); |
15819a70 AG |
3733 | list_del(¶ms->list); |
3734 | kfree(params); | |
3735 | ||
95305baa JH |
3736 | hci_update_background_scan(hdev); |
3737 | ||
15819a70 AG |
3738 | BT_DBG("addr %pMR (type %u)", addr, addr_type); |
3739 | } | |
3740 | ||
3741 | /* This function requires the caller holds hdev->lock */ | |
55af49a8 | 3742 | void hci_conn_params_clear_disabled(struct hci_dev *hdev) |
15819a70 AG |
3743 | { |
3744 | struct hci_conn_params *params, *tmp; | |
3745 | ||
3746 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
55af49a8 JH |
3747 | if (params->auto_connect != HCI_AUTO_CONN_DISABLED) |
3748 | continue; | |
15819a70 AG |
3749 | list_del(¶ms->list); |
3750 | kfree(params); | |
3751 | } | |
3752 | ||
55af49a8 | 3753 | BT_DBG("All LE disabled connection parameters were removed"); |
77a77a30 AG |
3754 | } |
3755 | ||
3756 | /* This function requires the caller holds hdev->lock */ | |
373110c5 | 3757 | void hci_conn_params_clear_all(struct hci_dev *hdev) |
77a77a30 | 3758 | { |
15819a70 | 3759 | struct hci_conn_params *params, *tmp; |
77a77a30 | 3760 | |
15819a70 | 3761 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { |
a2f41a8f | 3762 | list_del(¶ms->action); |
15819a70 AG |
3763 | list_del(¶ms->list); |
3764 | kfree(params); | |
77a77a30 AG |
3765 | } |
3766 | ||
a4790dbd | 3767 | hci_update_background_scan(hdev); |
77a77a30 | 3768 | |
15819a70 | 3769 | BT_DBG("All LE connection parameters were removed"); |
77a77a30 AG |
3770 | } |
3771 | ||
4c87eaab | 3772 | static void inquiry_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 3773 | { |
4c87eaab AG |
3774 | if (status) { |
3775 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 3776 | |
4c87eaab AG |
3777 | hci_dev_lock(hdev); |
3778 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3779 | hci_dev_unlock(hdev); | |
3780 | return; | |
3781 | } | |
7ba8b4be AG |
3782 | } |
3783 | ||
4c87eaab | 3784 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 3785 | { |
4c87eaab AG |
3786 | /* General inquiry access code (GIAC) */ |
3787 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
3788 | struct hci_request req; | |
3789 | struct hci_cp_inquiry cp; | |
7ba8b4be AG |
3790 | int err; |
3791 | ||
4c87eaab AG |
3792 | if (status) { |
3793 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
3794 | return; | |
3795 | } | |
7ba8b4be | 3796 | |
4c87eaab AG |
3797 | switch (hdev->discovery.type) { |
3798 | case DISCOV_TYPE_LE: | |
3799 | hci_dev_lock(hdev); | |
3800 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3801 | hci_dev_unlock(hdev); | |
3802 | break; | |
7ba8b4be | 3803 | |
4c87eaab AG |
3804 | case DISCOV_TYPE_INTERLEAVED: |
3805 | hci_req_init(&req, hdev); | |
7ba8b4be | 3806 | |
4c87eaab AG |
3807 | memset(&cp, 0, sizeof(cp)); |
3808 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
3809 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
3810 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
7ba8b4be | 3811 | |
4c87eaab | 3812 | hci_dev_lock(hdev); |
7dbfac1d | 3813 | |
4c87eaab | 3814 | hci_inquiry_cache_flush(hdev); |
7dbfac1d | 3815 | |
4c87eaab AG |
3816 | err = hci_req_run(&req, inquiry_complete); |
3817 | if (err) { | |
3818 | BT_ERR("Inquiry request failed: err %d", err); | |
3819 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3820 | } | |
7dbfac1d | 3821 | |
4c87eaab AG |
3822 | hci_dev_unlock(hdev); |
3823 | break; | |
7dbfac1d | 3824 | } |
7dbfac1d AG |
3825 | } |
3826 | ||
7ba8b4be AG |
3827 | static void le_scan_disable_work(struct work_struct *work) |
3828 | { | |
3829 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 3830 | le_scan_disable.work); |
4c87eaab AG |
3831 | struct hci_request req; |
3832 | int err; | |
7ba8b4be AG |
3833 | |
3834 | BT_DBG("%s", hdev->name); | |
3835 | ||
4c87eaab | 3836 | hci_req_init(&req, hdev); |
28b75a89 | 3837 | |
b1efcc28 | 3838 | hci_req_add_le_scan_disable(&req); |
28b75a89 | 3839 | |
4c87eaab AG |
3840 | err = hci_req_run(&req, le_scan_disable_work_complete); |
3841 | if (err) | |
3842 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
3843 | } |
3844 | ||
8d97250e JH |
3845 | static void set_random_addr(struct hci_request *req, bdaddr_t *rpa) |
3846 | { | |
3847 | struct hci_dev *hdev = req->hdev; | |
3848 | ||
3849 | /* If we're advertising or initiating an LE connection we can't | |
3850 | * go ahead and change the random address at this time. This is | |
3851 | * because the eventual initiator address used for the | |
3852 | * subsequently created connection will be undefined (some | |
3853 | * controllers use the new address and others the one we had | |
3854 | * when the operation started). | |
3855 | * | |
3856 | * In this kind of scenario skip the update and let the random | |
3857 | * address be updated at the next cycle. | |
3858 | */ | |
5ce194c4 | 3859 | if (test_bit(HCI_LE_ADV, &hdev->dev_flags) || |
8d97250e JH |
3860 | hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT)) { |
3861 | BT_DBG("Deferring random address update"); | |
3862 | return; | |
3863 | } | |
3864 | ||
3865 | hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, rpa); | |
3866 | } | |
3867 | ||
94b1fc92 MH |
3868 | int hci_update_random_address(struct hci_request *req, bool require_privacy, |
3869 | u8 *own_addr_type) | |
ebd3a747 JH |
3870 | { |
3871 | struct hci_dev *hdev = req->hdev; | |
3872 | int err; | |
3873 | ||
3874 | /* If privacy is enabled use a resolvable private address. If | |
2b5224dc MH |
3875 | * current RPA has expired or there is something else than |
3876 | * the current RPA in use, then generate a new one. | |
ebd3a747 JH |
3877 | */ |
3878 | if (test_bit(HCI_PRIVACY, &hdev->dev_flags)) { | |
ebd3a747 JH |
3879 | int to; |
3880 | ||
3881 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
3882 | ||
3883 | if (!test_and_clear_bit(HCI_RPA_EXPIRED, &hdev->dev_flags) && | |
2b5224dc | 3884 | !bacmp(&hdev->random_addr, &hdev->rpa)) |
ebd3a747 JH |
3885 | return 0; |
3886 | ||
defce9e8 | 3887 | err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa); |
ebd3a747 JH |
3888 | if (err < 0) { |
3889 | BT_ERR("%s failed to generate new RPA", hdev->name); | |
3890 | return err; | |
3891 | } | |
3892 | ||
8d97250e | 3893 | set_random_addr(req, &hdev->rpa); |
ebd3a747 JH |
3894 | |
3895 | to = msecs_to_jiffies(hdev->rpa_timeout * 1000); | |
3896 | queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, to); | |
3897 | ||
3898 | return 0; | |
94b1fc92 MH |
3899 | } |
3900 | ||
3901 | /* In case of required privacy without resolvable private address, | |
3902 | * use an unresolvable private address. This is useful for active | |
3903 | * scanning and non-connectable advertising. | |
3904 | */ | |
3905 | if (require_privacy) { | |
3906 | bdaddr_t urpa; | |
3907 | ||
3908 | get_random_bytes(&urpa, 6); | |
3909 | urpa.b[5] &= 0x3f; /* Clear two most significant bits */ | |
3910 | ||
3911 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
8d97250e | 3912 | set_random_addr(req, &urpa); |
94b1fc92 | 3913 | return 0; |
ebd3a747 JH |
3914 | } |
3915 | ||
3916 | /* If forcing static address is in use or there is no public | |
3917 | * address use the static address as random address (but skip | |
3918 | * the HCI command if the current random address is already the | |
3919 | * static one. | |
3920 | */ | |
111902f7 | 3921 | if (test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dbg_flags) || |
ebd3a747 JH |
3922 | !bacmp(&hdev->bdaddr, BDADDR_ANY)) { |
3923 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
3924 | if (bacmp(&hdev->static_addr, &hdev->random_addr)) | |
3925 | hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, | |
3926 | &hdev->static_addr); | |
3927 | return 0; | |
3928 | } | |
3929 | ||
3930 | /* Neither privacy nor static address is being used so use a | |
3931 | * public address. | |
3932 | */ | |
3933 | *own_addr_type = ADDR_LE_DEV_PUBLIC; | |
3934 | ||
3935 | return 0; | |
3936 | } | |
3937 | ||
a1f4c318 JH |
3938 | /* Copy the Identity Address of the controller. |
3939 | * | |
3940 | * If the controller has a public BD_ADDR, then by default use that one. | |
3941 | * If this is a LE only controller without a public address, default to | |
3942 | * the static random address. | |
3943 | * | |
3944 | * For debugging purposes it is possible to force controllers with a | |
3945 | * public address to use the static random address instead. | |
3946 | */ | |
3947 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3948 | u8 *bdaddr_type) | |
3949 | { | |
111902f7 | 3950 | if (test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dbg_flags) || |
a1f4c318 JH |
3951 | !bacmp(&hdev->bdaddr, BDADDR_ANY)) { |
3952 | bacpy(bdaddr, &hdev->static_addr); | |
3953 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
3954 | } else { | |
3955 | bacpy(bdaddr, &hdev->bdaddr); | |
3956 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
3957 | } | |
3958 | } | |
3959 | ||
9be0dab7 DH |
3960 | /* Alloc HCI device */ |
3961 | struct hci_dev *hci_alloc_dev(void) | |
3962 | { | |
3963 | struct hci_dev *hdev; | |
3964 | ||
27f70f3e | 3965 | hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); |
9be0dab7 DH |
3966 | if (!hdev) |
3967 | return NULL; | |
3968 | ||
b1b813d4 DH |
3969 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
3970 | hdev->esco_type = (ESCO_HV1); | |
3971 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
3972 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
3973 | hdev->io_capability = 0x03; /* No Input No Output */ | |
96c2103a | 3974 | hdev->manufacturer = 0xffff; /* Default to internal use */ |
bbaf444a JH |
3975 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
3976 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 3977 | |
b1b813d4 DH |
3978 | hdev->sniff_max_interval = 800; |
3979 | hdev->sniff_min_interval = 80; | |
3980 | ||
3f959d46 | 3981 | hdev->le_adv_channel_map = 0x07; |
628531c9 GL |
3982 | hdev->le_adv_min_interval = 0x0800; |
3983 | hdev->le_adv_max_interval = 0x0800; | |
bef64738 MH |
3984 | hdev->le_scan_interval = 0x0060; |
3985 | hdev->le_scan_window = 0x0030; | |
4e70c7e7 MH |
3986 | hdev->le_conn_min_interval = 0x0028; |
3987 | hdev->le_conn_max_interval = 0x0038; | |
04fb7d90 MH |
3988 | hdev->le_conn_latency = 0x0000; |
3989 | hdev->le_supv_timeout = 0x002a; | |
bef64738 | 3990 | |
d6bfd59c | 3991 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 3992 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
3993 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
3994 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
d6bfd59c | 3995 | |
b1b813d4 DH |
3996 | mutex_init(&hdev->lock); |
3997 | mutex_init(&hdev->req_lock); | |
3998 | ||
3999 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
4000 | INIT_LIST_HEAD(&hdev->blacklist); | |
6659358e | 4001 | INIT_LIST_HEAD(&hdev->whitelist); |
b1b813d4 DH |
4002 | INIT_LIST_HEAD(&hdev->uuids); |
4003 | INIT_LIST_HEAD(&hdev->link_keys); | |
4004 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 4005 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 4006 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
d2ab0ac1 | 4007 | INIT_LIST_HEAD(&hdev->le_white_list); |
15819a70 | 4008 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 4009 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
66f8455a | 4010 | INIT_LIST_HEAD(&hdev->pend_le_reports); |
6b536b5e | 4011 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
4012 | |
4013 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
4014 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
4015 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
4016 | INIT_WORK(&hdev->power_on, hci_power_on); | |
b1b813d4 | 4017 | |
b1b813d4 DH |
4018 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
4019 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
4020 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
4021 | ||
b1b813d4 DH |
4022 | skb_queue_head_init(&hdev->rx_q); |
4023 | skb_queue_head_init(&hdev->cmd_q); | |
4024 | skb_queue_head_init(&hdev->raw_q); | |
4025 | ||
4026 | init_waitqueue_head(&hdev->req_wait_q); | |
4027 | ||
65cc2b49 | 4028 | INIT_DELAYED_WORK(&hdev->cmd_timer, hci_cmd_timeout); |
b1b813d4 | 4029 | |
b1b813d4 DH |
4030 | hci_init_sysfs(hdev); |
4031 | discovery_init(hdev); | |
9be0dab7 DH |
4032 | |
4033 | return hdev; | |
4034 | } | |
4035 | EXPORT_SYMBOL(hci_alloc_dev); | |
4036 | ||
4037 | /* Free HCI device */ | |
4038 | void hci_free_dev(struct hci_dev *hdev) | |
4039 | { | |
9be0dab7 DH |
4040 | /* will free via device release */ |
4041 | put_device(&hdev->dev); | |
4042 | } | |
4043 | EXPORT_SYMBOL(hci_free_dev); | |
4044 | ||
1da177e4 LT |
4045 | /* Register HCI device */ |
4046 | int hci_register_dev(struct hci_dev *hdev) | |
4047 | { | |
b1b813d4 | 4048 | int id, error; |
1da177e4 | 4049 | |
74292d5a | 4050 | if (!hdev->open || !hdev->close || !hdev->send) |
1da177e4 LT |
4051 | return -EINVAL; |
4052 | ||
08add513 MM |
4053 | /* Do not allow HCI_AMP devices to register at index 0, |
4054 | * so the index can be used as the AMP controller ID. | |
4055 | */ | |
3df92b31 SL |
4056 | switch (hdev->dev_type) { |
4057 | case HCI_BREDR: | |
4058 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
4059 | break; | |
4060 | case HCI_AMP: | |
4061 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
4062 | break; | |
4063 | default: | |
4064 | return -EINVAL; | |
1da177e4 | 4065 | } |
8e87d142 | 4066 | |
3df92b31 SL |
4067 | if (id < 0) |
4068 | return id; | |
4069 | ||
1da177e4 LT |
4070 | sprintf(hdev->name, "hci%d", id); |
4071 | hdev->id = id; | |
2d8b3a11 AE |
4072 | |
4073 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
4074 | ||
d8537548 KC |
4075 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
4076 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
4077 | if (!hdev->workqueue) { |
4078 | error = -ENOMEM; | |
4079 | goto err; | |
4080 | } | |
f48fd9c8 | 4081 | |
d8537548 KC |
4082 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
4083 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
4084 | if (!hdev->req_workqueue) { |
4085 | destroy_workqueue(hdev->workqueue); | |
4086 | error = -ENOMEM; | |
4087 | goto err; | |
4088 | } | |
4089 | ||
0153e2ec MH |
4090 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
4091 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
4092 | ||
bdc3e0f1 MH |
4093 | dev_set_name(&hdev->dev, "%s", hdev->name); |
4094 | ||
4095 | error = device_add(&hdev->dev); | |
33ca954d | 4096 | if (error < 0) |
54506918 | 4097 | goto err_wqueue; |
1da177e4 | 4098 | |
611b30f7 | 4099 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
4100 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
4101 | hdev); | |
611b30f7 MH |
4102 | if (hdev->rfkill) { |
4103 | if (rfkill_register(hdev->rfkill) < 0) { | |
4104 | rfkill_destroy(hdev->rfkill); | |
4105 | hdev->rfkill = NULL; | |
4106 | } | |
4107 | } | |
4108 | ||
5e130367 JH |
4109 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
4110 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
4111 | ||
a8b2d5c2 | 4112 | set_bit(HCI_SETUP, &hdev->dev_flags); |
004b0258 | 4113 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
ce2be9ac | 4114 | |
01cd3404 | 4115 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
4116 | /* Assume BR/EDR support until proven otherwise (such as |
4117 | * through reading supported features during init. | |
4118 | */ | |
4119 | set_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
4120 | } | |
ce2be9ac | 4121 | |
fcee3377 GP |
4122 | write_lock(&hci_dev_list_lock); |
4123 | list_add(&hdev->list, &hci_dev_list); | |
4124 | write_unlock(&hci_dev_list_lock); | |
4125 | ||
4a964404 MH |
4126 | /* Devices that are marked for raw-only usage are unconfigured |
4127 | * and should not be included in normal operation. | |
fee746b0 MH |
4128 | */ |
4129 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
4a964404 | 4130 | set_bit(HCI_UNCONFIGURED, &hdev->dev_flags); |
fee746b0 | 4131 | |
1da177e4 | 4132 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 4133 | hci_dev_hold(hdev); |
1da177e4 | 4134 | |
19202573 | 4135 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 4136 | |
1da177e4 | 4137 | return id; |
f48fd9c8 | 4138 | |
33ca954d DH |
4139 | err_wqueue: |
4140 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 4141 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 4142 | err: |
3df92b31 | 4143 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 4144 | |
33ca954d | 4145 | return error; |
1da177e4 LT |
4146 | } |
4147 | EXPORT_SYMBOL(hci_register_dev); | |
4148 | ||
4149 | /* Unregister HCI device */ | |
59735631 | 4150 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 4151 | { |
3df92b31 | 4152 | int i, id; |
ef222013 | 4153 | |
c13854ce | 4154 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 4155 | |
94324962 JH |
4156 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
4157 | ||
3df92b31 SL |
4158 | id = hdev->id; |
4159 | ||
f20d09d5 | 4160 | write_lock(&hci_dev_list_lock); |
1da177e4 | 4161 | list_del(&hdev->list); |
f20d09d5 | 4162 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
4163 | |
4164 | hci_dev_do_close(hdev); | |
4165 | ||
cd4c5391 | 4166 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
4167 | kfree_skb(hdev->reassembly[i]); |
4168 | ||
b9b5ef18 GP |
4169 | cancel_work_sync(&hdev->power_on); |
4170 | ||
ab81cbf9 | 4171 | if (!test_bit(HCI_INIT, &hdev->flags) && |
d603b76b MH |
4172 | !test_bit(HCI_SETUP, &hdev->dev_flags) && |
4173 | !test_bit(HCI_CONFIG, &hdev->dev_flags)) { | |
09fd0de5 | 4174 | hci_dev_lock(hdev); |
744cf19e | 4175 | mgmt_index_removed(hdev); |
09fd0de5 | 4176 | hci_dev_unlock(hdev); |
56e5cb86 | 4177 | } |
ab81cbf9 | 4178 | |
2e58ef3e JH |
4179 | /* mgmt_index_removed should take care of emptying the |
4180 | * pending list */ | |
4181 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
4182 | ||
1da177e4 LT |
4183 | hci_notify(hdev, HCI_DEV_UNREG); |
4184 | ||
611b30f7 MH |
4185 | if (hdev->rfkill) { |
4186 | rfkill_unregister(hdev->rfkill); | |
4187 | rfkill_destroy(hdev->rfkill); | |
4188 | } | |
4189 | ||
711eafe3 | 4190 | smp_unregister(hdev); |
99780a7b | 4191 | |
bdc3e0f1 | 4192 | device_del(&hdev->dev); |
147e2d59 | 4193 | |
0153e2ec MH |
4194 | debugfs_remove_recursive(hdev->debugfs); |
4195 | ||
f48fd9c8 | 4196 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 4197 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 4198 | |
09fd0de5 | 4199 | hci_dev_lock(hdev); |
dcc36c16 | 4200 | hci_bdaddr_list_clear(&hdev->blacklist); |
6659358e | 4201 | hci_bdaddr_list_clear(&hdev->whitelist); |
2aeb9a1a | 4202 | hci_uuids_clear(hdev); |
55ed8ca1 | 4203 | hci_link_keys_clear(hdev); |
b899efaf | 4204 | hci_smp_ltks_clear(hdev); |
970c4e46 | 4205 | hci_smp_irks_clear(hdev); |
2763eda6 | 4206 | hci_remote_oob_data_clear(hdev); |
dcc36c16 | 4207 | hci_bdaddr_list_clear(&hdev->le_white_list); |
373110c5 | 4208 | hci_conn_params_clear_all(hdev); |
09fd0de5 | 4209 | hci_dev_unlock(hdev); |
e2e0cacb | 4210 | |
dc946bd8 | 4211 | hci_dev_put(hdev); |
3df92b31 SL |
4212 | |
4213 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
4214 | } |
4215 | EXPORT_SYMBOL(hci_unregister_dev); | |
4216 | ||
4217 | /* Suspend HCI device */ | |
4218 | int hci_suspend_dev(struct hci_dev *hdev) | |
4219 | { | |
4220 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
4221 | return 0; | |
4222 | } | |
4223 | EXPORT_SYMBOL(hci_suspend_dev); | |
4224 | ||
4225 | /* Resume HCI device */ | |
4226 | int hci_resume_dev(struct hci_dev *hdev) | |
4227 | { | |
4228 | hci_notify(hdev, HCI_DEV_RESUME); | |
4229 | return 0; | |
4230 | } | |
4231 | EXPORT_SYMBOL(hci_resume_dev); | |
4232 | ||
76bca880 | 4233 | /* Receive frame from HCI drivers */ |
e1a26170 | 4234 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 4235 | { |
76bca880 | 4236 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 4237 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
4238 | kfree_skb(skb); |
4239 | return -ENXIO; | |
4240 | } | |
4241 | ||
d82603c6 | 4242 | /* Incoming skb */ |
76bca880 MH |
4243 | bt_cb(skb)->incoming = 1; |
4244 | ||
4245 | /* Time stamp */ | |
4246 | __net_timestamp(skb); | |
4247 | ||
76bca880 | 4248 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 4249 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 4250 | |
76bca880 MH |
4251 | return 0; |
4252 | } | |
4253 | EXPORT_SYMBOL(hci_recv_frame); | |
4254 | ||
33e882a5 | 4255 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 4256 | int count, __u8 index) |
33e882a5 SS |
4257 | { |
4258 | int len = 0; | |
4259 | int hlen = 0; | |
4260 | int remain = count; | |
4261 | struct sk_buff *skb; | |
4262 | struct bt_skb_cb *scb; | |
4263 | ||
4264 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 4265 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
4266 | return -EILSEQ; |
4267 | ||
4268 | skb = hdev->reassembly[index]; | |
4269 | ||
4270 | if (!skb) { | |
4271 | switch (type) { | |
4272 | case HCI_ACLDATA_PKT: | |
4273 | len = HCI_MAX_FRAME_SIZE; | |
4274 | hlen = HCI_ACL_HDR_SIZE; | |
4275 | break; | |
4276 | case HCI_EVENT_PKT: | |
4277 | len = HCI_MAX_EVENT_SIZE; | |
4278 | hlen = HCI_EVENT_HDR_SIZE; | |
4279 | break; | |
4280 | case HCI_SCODATA_PKT: | |
4281 | len = HCI_MAX_SCO_SIZE; | |
4282 | hlen = HCI_SCO_HDR_SIZE; | |
4283 | break; | |
4284 | } | |
4285 | ||
1e429f38 | 4286 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
4287 | if (!skb) |
4288 | return -ENOMEM; | |
4289 | ||
4290 | scb = (void *) skb->cb; | |
4291 | scb->expect = hlen; | |
4292 | scb->pkt_type = type; | |
4293 | ||
33e882a5 SS |
4294 | hdev->reassembly[index] = skb; |
4295 | } | |
4296 | ||
4297 | while (count) { | |
4298 | scb = (void *) skb->cb; | |
89bb46d0 | 4299 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
4300 | |
4301 | memcpy(skb_put(skb, len), data, len); | |
4302 | ||
4303 | count -= len; | |
4304 | data += len; | |
4305 | scb->expect -= len; | |
4306 | remain = count; | |
4307 | ||
4308 | switch (type) { | |
4309 | case HCI_EVENT_PKT: | |
4310 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
4311 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
4312 | scb->expect = h->plen; | |
4313 | ||
4314 | if (skb_tailroom(skb) < scb->expect) { | |
4315 | kfree_skb(skb); | |
4316 | hdev->reassembly[index] = NULL; | |
4317 | return -ENOMEM; | |
4318 | } | |
4319 | } | |
4320 | break; | |
4321 | ||
4322 | case HCI_ACLDATA_PKT: | |
4323 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
4324 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
4325 | scb->expect = __le16_to_cpu(h->dlen); | |
4326 | ||
4327 | if (skb_tailroom(skb) < scb->expect) { | |
4328 | kfree_skb(skb); | |
4329 | hdev->reassembly[index] = NULL; | |
4330 | return -ENOMEM; | |
4331 | } | |
4332 | } | |
4333 | break; | |
4334 | ||
4335 | case HCI_SCODATA_PKT: | |
4336 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
4337 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
4338 | scb->expect = h->dlen; | |
4339 | ||
4340 | if (skb_tailroom(skb) < scb->expect) { | |
4341 | kfree_skb(skb); | |
4342 | hdev->reassembly[index] = NULL; | |
4343 | return -ENOMEM; | |
4344 | } | |
4345 | } | |
4346 | break; | |
4347 | } | |
4348 | ||
4349 | if (scb->expect == 0) { | |
4350 | /* Complete frame */ | |
4351 | ||
4352 | bt_cb(skb)->pkt_type = type; | |
e1a26170 | 4353 | hci_recv_frame(hdev, skb); |
33e882a5 SS |
4354 | |
4355 | hdev->reassembly[index] = NULL; | |
4356 | return remain; | |
4357 | } | |
4358 | } | |
4359 | ||
4360 | return remain; | |
4361 | } | |
4362 | ||
ef222013 MH |
4363 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
4364 | { | |
f39a3c06 SS |
4365 | int rem = 0; |
4366 | ||
ef222013 MH |
4367 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
4368 | return -EILSEQ; | |
4369 | ||
da5f6c37 | 4370 | while (count) { |
1e429f38 | 4371 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
4372 | if (rem < 0) |
4373 | return rem; | |
ef222013 | 4374 | |
f39a3c06 SS |
4375 | data += (count - rem); |
4376 | count = rem; | |
f81c6224 | 4377 | } |
ef222013 | 4378 | |
f39a3c06 | 4379 | return rem; |
ef222013 MH |
4380 | } |
4381 | EXPORT_SYMBOL(hci_recv_fragment); | |
4382 | ||
99811510 SS |
4383 | #define STREAM_REASSEMBLY 0 |
4384 | ||
4385 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
4386 | { | |
4387 | int type; | |
4388 | int rem = 0; | |
4389 | ||
da5f6c37 | 4390 | while (count) { |
99811510 SS |
4391 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
4392 | ||
4393 | if (!skb) { | |
4394 | struct { char type; } *pkt; | |
4395 | ||
4396 | /* Start of the frame */ | |
4397 | pkt = data; | |
4398 | type = pkt->type; | |
4399 | ||
4400 | data++; | |
4401 | count--; | |
4402 | } else | |
4403 | type = bt_cb(skb)->pkt_type; | |
4404 | ||
1e429f38 | 4405 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 4406 | STREAM_REASSEMBLY); |
99811510 SS |
4407 | if (rem < 0) |
4408 | return rem; | |
4409 | ||
4410 | data += (count - rem); | |
4411 | count = rem; | |
f81c6224 | 4412 | } |
99811510 SS |
4413 | |
4414 | return rem; | |
4415 | } | |
4416 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
4417 | ||
1da177e4 LT |
4418 | /* ---- Interface to upper protocols ---- */ |
4419 | ||
1da177e4 LT |
4420 | int hci_register_cb(struct hci_cb *cb) |
4421 | { | |
4422 | BT_DBG("%p name %s", cb, cb->name); | |
4423 | ||
f20d09d5 | 4424 | write_lock(&hci_cb_list_lock); |
1da177e4 | 4425 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 4426 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
4427 | |
4428 | return 0; | |
4429 | } | |
4430 | EXPORT_SYMBOL(hci_register_cb); | |
4431 | ||
4432 | int hci_unregister_cb(struct hci_cb *cb) | |
4433 | { | |
4434 | BT_DBG("%p name %s", cb, cb->name); | |
4435 | ||
f20d09d5 | 4436 | write_lock(&hci_cb_list_lock); |
1da177e4 | 4437 | list_del(&cb->list); |
f20d09d5 | 4438 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
4439 | |
4440 | return 0; | |
4441 | } | |
4442 | EXPORT_SYMBOL(hci_unregister_cb); | |
4443 | ||
51086991 | 4444 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 4445 | { |
cdc52faa MH |
4446 | int err; |
4447 | ||
0d48d939 | 4448 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 4449 | |
cd82e61c MH |
4450 | /* Time stamp */ |
4451 | __net_timestamp(skb); | |
1da177e4 | 4452 | |
cd82e61c MH |
4453 | /* Send copy to monitor */ |
4454 | hci_send_to_monitor(hdev, skb); | |
4455 | ||
4456 | if (atomic_read(&hdev->promisc)) { | |
4457 | /* Send copy to the sockets */ | |
470fe1b5 | 4458 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4459 | } |
4460 | ||
4461 | /* Get rid of skb owner, prior to sending to the driver. */ | |
4462 | skb_orphan(skb); | |
4463 | ||
cdc52faa MH |
4464 | err = hdev->send(hdev, skb); |
4465 | if (err < 0) { | |
4466 | BT_ERR("%s sending frame failed (%d)", hdev->name, err); | |
4467 | kfree_skb(skb); | |
4468 | } | |
1da177e4 LT |
4469 | } |
4470 | ||
3119ae95 JH |
4471 | void hci_req_init(struct hci_request *req, struct hci_dev *hdev) |
4472 | { | |
4473 | skb_queue_head_init(&req->cmd_q); | |
4474 | req->hdev = hdev; | |
5d73e034 | 4475 | req->err = 0; |
3119ae95 JH |
4476 | } |
4477 | ||
4478 | int hci_req_run(struct hci_request *req, hci_req_complete_t complete) | |
4479 | { | |
4480 | struct hci_dev *hdev = req->hdev; | |
4481 | struct sk_buff *skb; | |
4482 | unsigned long flags; | |
4483 | ||
4484 | BT_DBG("length %u", skb_queue_len(&req->cmd_q)); | |
4485 | ||
5d73e034 AG |
4486 | /* If an error occured during request building, remove all HCI |
4487 | * commands queued on the HCI request queue. | |
4488 | */ | |
4489 | if (req->err) { | |
4490 | skb_queue_purge(&req->cmd_q); | |
4491 | return req->err; | |
4492 | } | |
4493 | ||
3119ae95 JH |
4494 | /* Do not allow empty requests */ |
4495 | if (skb_queue_empty(&req->cmd_q)) | |
382b0c39 | 4496 | return -ENODATA; |
3119ae95 JH |
4497 | |
4498 | skb = skb_peek_tail(&req->cmd_q); | |
4499 | bt_cb(skb)->req.complete = complete; | |
4500 | ||
4501 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4502 | skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q); | |
4503 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
4504 | ||
4505 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4506 | ||
4507 | return 0; | |
4508 | } | |
4509 | ||
899de765 MH |
4510 | bool hci_req_pending(struct hci_dev *hdev) |
4511 | { | |
4512 | return (hdev->req_status == HCI_REQ_PEND); | |
4513 | } | |
4514 | ||
1ca3a9d0 | 4515 | static struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, |
07dc93dd | 4516 | u32 plen, const void *param) |
1da177e4 LT |
4517 | { |
4518 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
4519 | struct hci_command_hdr *hdr; | |
4520 | struct sk_buff *skb; | |
4521 | ||
1da177e4 | 4522 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
1ca3a9d0 JH |
4523 | if (!skb) |
4524 | return NULL; | |
1da177e4 LT |
4525 | |
4526 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 4527 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
4528 | hdr->plen = plen; |
4529 | ||
4530 | if (plen) | |
4531 | memcpy(skb_put(skb, plen), param, plen); | |
4532 | ||
4533 | BT_DBG("skb len %d", skb->len); | |
4534 | ||
0d48d939 | 4535 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
c78ae283 | 4536 | |
1ca3a9d0 JH |
4537 | return skb; |
4538 | } | |
4539 | ||
4540 | /* Send HCI command */ | |
07dc93dd JH |
4541 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
4542 | const void *param) | |
1ca3a9d0 JH |
4543 | { |
4544 | struct sk_buff *skb; | |
4545 | ||
4546 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
4547 | ||
4548 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
4549 | if (!skb) { | |
4550 | BT_ERR("%s no memory for command", hdev->name); | |
4551 | return -ENOMEM; | |
4552 | } | |
4553 | ||
11714b3d JH |
4554 | /* Stand-alone HCI commands must be flaged as |
4555 | * single-command requests. | |
4556 | */ | |
4557 | bt_cb(skb)->req.start = true; | |
4558 | ||
1da177e4 | 4559 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 4560 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4561 | |
4562 | return 0; | |
4563 | } | |
1da177e4 | 4564 | |
71c76a17 | 4565 | /* Queue a command to an asynchronous HCI request */ |
07dc93dd JH |
4566 | void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, |
4567 | const void *param, u8 event) | |
71c76a17 JH |
4568 | { |
4569 | struct hci_dev *hdev = req->hdev; | |
4570 | struct sk_buff *skb; | |
4571 | ||
4572 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
4573 | ||
34739c1e AG |
4574 | /* If an error occured during request building, there is no point in |
4575 | * queueing the HCI command. We can simply return. | |
4576 | */ | |
4577 | if (req->err) | |
4578 | return; | |
4579 | ||
71c76a17 JH |
4580 | skb = hci_prepare_cmd(hdev, opcode, plen, param); |
4581 | if (!skb) { | |
5d73e034 AG |
4582 | BT_ERR("%s no memory for command (opcode 0x%4.4x)", |
4583 | hdev->name, opcode); | |
4584 | req->err = -ENOMEM; | |
e348fe6b | 4585 | return; |
71c76a17 JH |
4586 | } |
4587 | ||
4588 | if (skb_queue_empty(&req->cmd_q)) | |
4589 | bt_cb(skb)->req.start = true; | |
4590 | ||
02350a72 JH |
4591 | bt_cb(skb)->req.event = event; |
4592 | ||
71c76a17 | 4593 | skb_queue_tail(&req->cmd_q, skb); |
71c76a17 JH |
4594 | } |
4595 | ||
07dc93dd JH |
4596 | void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, |
4597 | const void *param) | |
02350a72 JH |
4598 | { |
4599 | hci_req_add_ev(req, opcode, plen, param, 0); | |
4600 | } | |
4601 | ||
1da177e4 | 4602 | /* Get data from the previously sent command */ |
a9de9248 | 4603 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
4604 | { |
4605 | struct hci_command_hdr *hdr; | |
4606 | ||
4607 | if (!hdev->sent_cmd) | |
4608 | return NULL; | |
4609 | ||
4610 | hdr = (void *) hdev->sent_cmd->data; | |
4611 | ||
a9de9248 | 4612 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
4613 | return NULL; |
4614 | ||
f0e09510 | 4615 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
4616 | |
4617 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
4618 | } | |
4619 | ||
4620 | /* Send ACL data */ | |
4621 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
4622 | { | |
4623 | struct hci_acl_hdr *hdr; | |
4624 | int len = skb->len; | |
4625 | ||
badff6d0 ACM |
4626 | skb_push(skb, HCI_ACL_HDR_SIZE); |
4627 | skb_reset_transport_header(skb); | |
9c70220b | 4628 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
4629 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
4630 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
4631 | } |
4632 | ||
ee22be7e | 4633 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 4634 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 4635 | { |
ee22be7e | 4636 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
4637 | struct hci_dev *hdev = conn->hdev; |
4638 | struct sk_buff *list; | |
4639 | ||
087bfd99 GP |
4640 | skb->len = skb_headlen(skb); |
4641 | skb->data_len = 0; | |
4642 | ||
4643 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
4644 | |
4645 | switch (hdev->dev_type) { | |
4646 | case HCI_BREDR: | |
4647 | hci_add_acl_hdr(skb, conn->handle, flags); | |
4648 | break; | |
4649 | case HCI_AMP: | |
4650 | hci_add_acl_hdr(skb, chan->handle, flags); | |
4651 | break; | |
4652 | default: | |
4653 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
4654 | return; | |
4655 | } | |
087bfd99 | 4656 | |
70f23020 AE |
4657 | list = skb_shinfo(skb)->frag_list; |
4658 | if (!list) { | |
1da177e4 LT |
4659 | /* Non fragmented */ |
4660 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
4661 | ||
73d80deb | 4662 | skb_queue_tail(queue, skb); |
1da177e4 LT |
4663 | } else { |
4664 | /* Fragmented */ | |
4665 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
4666 | ||
4667 | skb_shinfo(skb)->frag_list = NULL; | |
4668 | ||
4669 | /* Queue all fragments atomically */ | |
af3e6359 | 4670 | spin_lock(&queue->lock); |
1da177e4 | 4671 | |
73d80deb | 4672 | __skb_queue_tail(queue, skb); |
e702112f AE |
4673 | |
4674 | flags &= ~ACL_START; | |
4675 | flags |= ACL_CONT; | |
1da177e4 LT |
4676 | do { |
4677 | skb = list; list = list->next; | |
8e87d142 | 4678 | |
0d48d939 | 4679 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 4680 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
4681 | |
4682 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
4683 | ||
73d80deb | 4684 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
4685 | } while (list); |
4686 | ||
af3e6359 | 4687 | spin_unlock(&queue->lock); |
1da177e4 | 4688 | } |
73d80deb LAD |
4689 | } |
4690 | ||
4691 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
4692 | { | |
ee22be7e | 4693 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 4694 | |
f0e09510 | 4695 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 4696 | |
ee22be7e | 4697 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 4698 | |
3eff45ea | 4699 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 4700 | } |
1da177e4 LT |
4701 | |
4702 | /* Send SCO data */ | |
0d861d8b | 4703 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
4704 | { |
4705 | struct hci_dev *hdev = conn->hdev; | |
4706 | struct hci_sco_hdr hdr; | |
4707 | ||
4708 | BT_DBG("%s len %d", hdev->name, skb->len); | |
4709 | ||
aca3192c | 4710 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
4711 | hdr.dlen = skb->len; |
4712 | ||
badff6d0 ACM |
4713 | skb_push(skb, HCI_SCO_HDR_SIZE); |
4714 | skb_reset_transport_header(skb); | |
9c70220b | 4715 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 4716 | |
0d48d939 | 4717 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 4718 | |
1da177e4 | 4719 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 4720 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 4721 | } |
1da177e4 LT |
4722 | |
4723 | /* ---- HCI TX task (outgoing data) ---- */ | |
4724 | ||
4725 | /* HCI Connection scheduler */ | |
6039aa73 GP |
4726 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
4727 | int *quote) | |
1da177e4 LT |
4728 | { |
4729 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 4730 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 4731 | unsigned int num = 0, min = ~0; |
1da177e4 | 4732 | |
8e87d142 | 4733 | /* We don't have to lock device here. Connections are always |
1da177e4 | 4734 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
4735 | |
4736 | rcu_read_lock(); | |
4737 | ||
4738 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 4739 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 4740 | continue; |
769be974 MH |
4741 | |
4742 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
4743 | continue; | |
4744 | ||
1da177e4 LT |
4745 | num++; |
4746 | ||
4747 | if (c->sent < min) { | |
4748 | min = c->sent; | |
4749 | conn = c; | |
4750 | } | |
52087a79 LAD |
4751 | |
4752 | if (hci_conn_num(hdev, type) == num) | |
4753 | break; | |
1da177e4 LT |
4754 | } |
4755 | ||
bf4c6325 GP |
4756 | rcu_read_unlock(); |
4757 | ||
1da177e4 | 4758 | if (conn) { |
6ed58ec5 VT |
4759 | int cnt, q; |
4760 | ||
4761 | switch (conn->type) { | |
4762 | case ACL_LINK: | |
4763 | cnt = hdev->acl_cnt; | |
4764 | break; | |
4765 | case SCO_LINK: | |
4766 | case ESCO_LINK: | |
4767 | cnt = hdev->sco_cnt; | |
4768 | break; | |
4769 | case LE_LINK: | |
4770 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
4771 | break; | |
4772 | default: | |
4773 | cnt = 0; | |
4774 | BT_ERR("Unknown link type"); | |
4775 | } | |
4776 | ||
4777 | q = cnt / num; | |
1da177e4 LT |
4778 | *quote = q ? q : 1; |
4779 | } else | |
4780 | *quote = 0; | |
4781 | ||
4782 | BT_DBG("conn %p quote %d", conn, *quote); | |
4783 | return conn; | |
4784 | } | |
4785 | ||
6039aa73 | 4786 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
4787 | { |
4788 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 4789 | struct hci_conn *c; |
1da177e4 | 4790 | |
bae1f5d9 | 4791 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 4792 | |
bf4c6325 GP |
4793 | rcu_read_lock(); |
4794 | ||
1da177e4 | 4795 | /* Kill stalled connections */ |
bf4c6325 | 4796 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 4797 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
4798 | BT_ERR("%s killing stalled connection %pMR", |
4799 | hdev->name, &c->dst); | |
bed71748 | 4800 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
4801 | } |
4802 | } | |
bf4c6325 GP |
4803 | |
4804 | rcu_read_unlock(); | |
1da177e4 LT |
4805 | } |
4806 | ||
6039aa73 GP |
4807 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
4808 | int *quote) | |
1da177e4 | 4809 | { |
73d80deb LAD |
4810 | struct hci_conn_hash *h = &hdev->conn_hash; |
4811 | struct hci_chan *chan = NULL; | |
abc5de8f | 4812 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 4813 | struct hci_conn *conn; |
73d80deb LAD |
4814 | int cnt, q, conn_num = 0; |
4815 | ||
4816 | BT_DBG("%s", hdev->name); | |
4817 | ||
bf4c6325 GP |
4818 | rcu_read_lock(); |
4819 | ||
4820 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
4821 | struct hci_chan *tmp; |
4822 | ||
4823 | if (conn->type != type) | |
4824 | continue; | |
4825 | ||
4826 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
4827 | continue; | |
4828 | ||
4829 | conn_num++; | |
4830 | ||
8192edef | 4831 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
4832 | struct sk_buff *skb; |
4833 | ||
4834 | if (skb_queue_empty(&tmp->data_q)) | |
4835 | continue; | |
4836 | ||
4837 | skb = skb_peek(&tmp->data_q); | |
4838 | if (skb->priority < cur_prio) | |
4839 | continue; | |
4840 | ||
4841 | if (skb->priority > cur_prio) { | |
4842 | num = 0; | |
4843 | min = ~0; | |
4844 | cur_prio = skb->priority; | |
4845 | } | |
4846 | ||
4847 | num++; | |
4848 | ||
4849 | if (conn->sent < min) { | |
4850 | min = conn->sent; | |
4851 | chan = tmp; | |
4852 | } | |
4853 | } | |
4854 | ||
4855 | if (hci_conn_num(hdev, type) == conn_num) | |
4856 | break; | |
4857 | } | |
4858 | ||
bf4c6325 GP |
4859 | rcu_read_unlock(); |
4860 | ||
73d80deb LAD |
4861 | if (!chan) |
4862 | return NULL; | |
4863 | ||
4864 | switch (chan->conn->type) { | |
4865 | case ACL_LINK: | |
4866 | cnt = hdev->acl_cnt; | |
4867 | break; | |
bd1eb66b AE |
4868 | case AMP_LINK: |
4869 | cnt = hdev->block_cnt; | |
4870 | break; | |
73d80deb LAD |
4871 | case SCO_LINK: |
4872 | case ESCO_LINK: | |
4873 | cnt = hdev->sco_cnt; | |
4874 | break; | |
4875 | case LE_LINK: | |
4876 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
4877 | break; | |
4878 | default: | |
4879 | cnt = 0; | |
4880 | BT_ERR("Unknown link type"); | |
4881 | } | |
4882 | ||
4883 | q = cnt / num; | |
4884 | *quote = q ? q : 1; | |
4885 | BT_DBG("chan %p quote %d", chan, *quote); | |
4886 | return chan; | |
4887 | } | |
4888 | ||
02b20f0b LAD |
4889 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
4890 | { | |
4891 | struct hci_conn_hash *h = &hdev->conn_hash; | |
4892 | struct hci_conn *conn; | |
4893 | int num = 0; | |
4894 | ||
4895 | BT_DBG("%s", hdev->name); | |
4896 | ||
bf4c6325 GP |
4897 | rcu_read_lock(); |
4898 | ||
4899 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
4900 | struct hci_chan *chan; |
4901 | ||
4902 | if (conn->type != type) | |
4903 | continue; | |
4904 | ||
4905 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
4906 | continue; | |
4907 | ||
4908 | num++; | |
4909 | ||
8192edef | 4910 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
4911 | struct sk_buff *skb; |
4912 | ||
4913 | if (chan->sent) { | |
4914 | chan->sent = 0; | |
4915 | continue; | |
4916 | } | |
4917 | ||
4918 | if (skb_queue_empty(&chan->data_q)) | |
4919 | continue; | |
4920 | ||
4921 | skb = skb_peek(&chan->data_q); | |
4922 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
4923 | continue; | |
4924 | ||
4925 | skb->priority = HCI_PRIO_MAX - 1; | |
4926 | ||
4927 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 4928 | skb->priority); |
02b20f0b LAD |
4929 | } |
4930 | ||
4931 | if (hci_conn_num(hdev, type) == num) | |
4932 | break; | |
4933 | } | |
bf4c6325 GP |
4934 | |
4935 | rcu_read_unlock(); | |
4936 | ||
02b20f0b LAD |
4937 | } |
4938 | ||
b71d385a AE |
4939 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
4940 | { | |
4941 | /* Calculate count of blocks used by this packet */ | |
4942 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
4943 | } | |
4944 | ||
6039aa73 | 4945 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 4946 | { |
4a964404 | 4947 | if (!test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
1da177e4 LT |
4948 | /* ACL tx timeout must be longer than maximum |
4949 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 4950 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 4951 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 4952 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 4953 | } |
63d2bc1b | 4954 | } |
1da177e4 | 4955 | |
6039aa73 | 4956 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
4957 | { |
4958 | unsigned int cnt = hdev->acl_cnt; | |
4959 | struct hci_chan *chan; | |
4960 | struct sk_buff *skb; | |
4961 | int quote; | |
4962 | ||
4963 | __check_timeout(hdev, cnt); | |
04837f64 | 4964 | |
73d80deb | 4965 | while (hdev->acl_cnt && |
a8c5fb1a | 4966 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
4967 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4968 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4969 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4970 | skb->len, skb->priority); |
73d80deb | 4971 | |
ec1cce24 LAD |
4972 | /* Stop if priority has changed */ |
4973 | if (skb->priority < priority) | |
4974 | break; | |
4975 | ||
4976 | skb = skb_dequeue(&chan->data_q); | |
4977 | ||
73d80deb | 4978 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 4979 | bt_cb(skb)->force_active); |
04837f64 | 4980 | |
57d17d70 | 4981 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4982 | hdev->acl_last_tx = jiffies; |
4983 | ||
4984 | hdev->acl_cnt--; | |
73d80deb LAD |
4985 | chan->sent++; |
4986 | chan->conn->sent++; | |
1da177e4 LT |
4987 | } |
4988 | } | |
02b20f0b LAD |
4989 | |
4990 | if (cnt != hdev->acl_cnt) | |
4991 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
4992 | } |
4993 | ||
6039aa73 | 4994 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 4995 | { |
63d2bc1b | 4996 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
4997 | struct hci_chan *chan; |
4998 | struct sk_buff *skb; | |
4999 | int quote; | |
bd1eb66b | 5000 | u8 type; |
b71d385a | 5001 | |
63d2bc1b | 5002 | __check_timeout(hdev, cnt); |
b71d385a | 5003 | |
bd1eb66b AE |
5004 | BT_DBG("%s", hdev->name); |
5005 | ||
5006 | if (hdev->dev_type == HCI_AMP) | |
5007 | type = AMP_LINK; | |
5008 | else | |
5009 | type = ACL_LINK; | |
5010 | ||
b71d385a | 5011 | while (hdev->block_cnt > 0 && |
bd1eb66b | 5012 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
5013 | u32 priority = (skb_peek(&chan->data_q))->priority; |
5014 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
5015 | int blocks; | |
5016 | ||
5017 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 5018 | skb->len, skb->priority); |
b71d385a AE |
5019 | |
5020 | /* Stop if priority has changed */ | |
5021 | if (skb->priority < priority) | |
5022 | break; | |
5023 | ||
5024 | skb = skb_dequeue(&chan->data_q); | |
5025 | ||
5026 | blocks = __get_blocks(hdev, skb); | |
5027 | if (blocks > hdev->block_cnt) | |
5028 | return; | |
5029 | ||
5030 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 5031 | bt_cb(skb)->force_active); |
b71d385a | 5032 | |
57d17d70 | 5033 | hci_send_frame(hdev, skb); |
b71d385a AE |
5034 | hdev->acl_last_tx = jiffies; |
5035 | ||
5036 | hdev->block_cnt -= blocks; | |
5037 | quote -= blocks; | |
5038 | ||
5039 | chan->sent += blocks; | |
5040 | chan->conn->sent += blocks; | |
5041 | } | |
5042 | } | |
5043 | ||
5044 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 5045 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
5046 | } |
5047 | ||
6039aa73 | 5048 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
5049 | { |
5050 | BT_DBG("%s", hdev->name); | |
5051 | ||
bd1eb66b AE |
5052 | /* No ACL link over BR/EDR controller */ |
5053 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
5054 | return; | |
5055 | ||
5056 | /* No AMP link over AMP controller */ | |
5057 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
5058 | return; |
5059 | ||
5060 | switch (hdev->flow_ctl_mode) { | |
5061 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
5062 | hci_sched_acl_pkt(hdev); | |
5063 | break; | |
5064 | ||
5065 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
5066 | hci_sched_acl_blk(hdev); | |
5067 | break; | |
5068 | } | |
5069 | } | |
5070 | ||
1da177e4 | 5071 | /* Schedule SCO */ |
6039aa73 | 5072 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
5073 | { |
5074 | struct hci_conn *conn; | |
5075 | struct sk_buff *skb; | |
5076 | int quote; | |
5077 | ||
5078 | BT_DBG("%s", hdev->name); | |
5079 | ||
52087a79 LAD |
5080 | if (!hci_conn_num(hdev, SCO_LINK)) |
5081 | return; | |
5082 | ||
1da177e4 LT |
5083 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
5084 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
5085 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 5086 | hci_send_frame(hdev, skb); |
1da177e4 LT |
5087 | |
5088 | conn->sent++; | |
5089 | if (conn->sent == ~0) | |
5090 | conn->sent = 0; | |
5091 | } | |
5092 | } | |
5093 | } | |
5094 | ||
6039aa73 | 5095 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
5096 | { |
5097 | struct hci_conn *conn; | |
5098 | struct sk_buff *skb; | |
5099 | int quote; | |
5100 | ||
5101 | BT_DBG("%s", hdev->name); | |
5102 | ||
52087a79 LAD |
5103 | if (!hci_conn_num(hdev, ESCO_LINK)) |
5104 | return; | |
5105 | ||
8fc9ced3 GP |
5106 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
5107 | "e))) { | |
b6a0dc82 MH |
5108 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
5109 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 5110 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
5111 | |
5112 | conn->sent++; | |
5113 | if (conn->sent == ~0) | |
5114 | conn->sent = 0; | |
5115 | } | |
5116 | } | |
5117 | } | |
5118 | ||
6039aa73 | 5119 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 5120 | { |
73d80deb | 5121 | struct hci_chan *chan; |
6ed58ec5 | 5122 | struct sk_buff *skb; |
02b20f0b | 5123 | int quote, cnt, tmp; |
6ed58ec5 VT |
5124 | |
5125 | BT_DBG("%s", hdev->name); | |
5126 | ||
52087a79 LAD |
5127 | if (!hci_conn_num(hdev, LE_LINK)) |
5128 | return; | |
5129 | ||
4a964404 | 5130 | if (!test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) { |
6ed58ec5 VT |
5131 | /* LE tx timeout must be longer than maximum |
5132 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 5133 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 5134 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 5135 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
5136 | } |
5137 | ||
5138 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 5139 | tmp = cnt; |
73d80deb | 5140 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
5141 | u32 priority = (skb_peek(&chan->data_q))->priority; |
5142 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 5143 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 5144 | skb->len, skb->priority); |
6ed58ec5 | 5145 | |
ec1cce24 LAD |
5146 | /* Stop if priority has changed */ |
5147 | if (skb->priority < priority) | |
5148 | break; | |
5149 | ||
5150 | skb = skb_dequeue(&chan->data_q); | |
5151 | ||
57d17d70 | 5152 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
5153 | hdev->le_last_tx = jiffies; |
5154 | ||
5155 | cnt--; | |
73d80deb LAD |
5156 | chan->sent++; |
5157 | chan->conn->sent++; | |
6ed58ec5 VT |
5158 | } |
5159 | } | |
73d80deb | 5160 | |
6ed58ec5 VT |
5161 | if (hdev->le_pkts) |
5162 | hdev->le_cnt = cnt; | |
5163 | else | |
5164 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
5165 | |
5166 | if (cnt != tmp) | |
5167 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
5168 | } |
5169 | ||
3eff45ea | 5170 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 5171 | { |
3eff45ea | 5172 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
5173 | struct sk_buff *skb; |
5174 | ||
6ed58ec5 | 5175 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 5176 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 5177 | |
52de599e MH |
5178 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
5179 | /* Schedule queues and send stuff to HCI driver */ | |
5180 | hci_sched_acl(hdev); | |
5181 | hci_sched_sco(hdev); | |
5182 | hci_sched_esco(hdev); | |
5183 | hci_sched_le(hdev); | |
5184 | } | |
6ed58ec5 | 5185 | |
1da177e4 LT |
5186 | /* Send next queued raw (unknown type) packet */ |
5187 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 5188 | hci_send_frame(hdev, skb); |
1da177e4 LT |
5189 | } |
5190 | ||
25985edc | 5191 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
5192 | |
5193 | /* ACL data packet */ | |
6039aa73 | 5194 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
5195 | { |
5196 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
5197 | struct hci_conn *conn; | |
5198 | __u16 handle, flags; | |
5199 | ||
5200 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
5201 | ||
5202 | handle = __le16_to_cpu(hdr->handle); | |
5203 | flags = hci_flags(handle); | |
5204 | handle = hci_handle(handle); | |
5205 | ||
f0e09510 | 5206 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 5207 | handle, flags); |
1da177e4 LT |
5208 | |
5209 | hdev->stat.acl_rx++; | |
5210 | ||
5211 | hci_dev_lock(hdev); | |
5212 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
5213 | hci_dev_unlock(hdev); | |
8e87d142 | 5214 | |
1da177e4 | 5215 | if (conn) { |
65983fc7 | 5216 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 5217 | |
1da177e4 | 5218 | /* Send to upper protocol */ |
686ebf28 UF |
5219 | l2cap_recv_acldata(conn, skb, flags); |
5220 | return; | |
1da177e4 | 5221 | } else { |
8e87d142 | 5222 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 5223 | hdev->name, handle); |
1da177e4 LT |
5224 | } |
5225 | ||
5226 | kfree_skb(skb); | |
5227 | } | |
5228 | ||
5229 | /* SCO data packet */ | |
6039aa73 | 5230 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
5231 | { |
5232 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
5233 | struct hci_conn *conn; | |
5234 | __u16 handle; | |
5235 | ||
5236 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
5237 | ||
5238 | handle = __le16_to_cpu(hdr->handle); | |
5239 | ||
f0e09510 | 5240 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
5241 | |
5242 | hdev->stat.sco_rx++; | |
5243 | ||
5244 | hci_dev_lock(hdev); | |
5245 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
5246 | hci_dev_unlock(hdev); | |
5247 | ||
5248 | if (conn) { | |
1da177e4 | 5249 | /* Send to upper protocol */ |
686ebf28 UF |
5250 | sco_recv_scodata(conn, skb); |
5251 | return; | |
1da177e4 | 5252 | } else { |
8e87d142 | 5253 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 5254 | hdev->name, handle); |
1da177e4 LT |
5255 | } |
5256 | ||
5257 | kfree_skb(skb); | |
5258 | } | |
5259 | ||
9238f36a JH |
5260 | static bool hci_req_is_complete(struct hci_dev *hdev) |
5261 | { | |
5262 | struct sk_buff *skb; | |
5263 | ||
5264 | skb = skb_peek(&hdev->cmd_q); | |
5265 | if (!skb) | |
5266 | return true; | |
5267 | ||
5268 | return bt_cb(skb)->req.start; | |
5269 | } | |
5270 | ||
42c6b129 JH |
5271 | static void hci_resend_last(struct hci_dev *hdev) |
5272 | { | |
5273 | struct hci_command_hdr *sent; | |
5274 | struct sk_buff *skb; | |
5275 | u16 opcode; | |
5276 | ||
5277 | if (!hdev->sent_cmd) | |
5278 | return; | |
5279 | ||
5280 | sent = (void *) hdev->sent_cmd->data; | |
5281 | opcode = __le16_to_cpu(sent->opcode); | |
5282 | if (opcode == HCI_OP_RESET) | |
5283 | return; | |
5284 | ||
5285 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
5286 | if (!skb) | |
5287 | return; | |
5288 | ||
5289 | skb_queue_head(&hdev->cmd_q, skb); | |
5290 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
5291 | } | |
5292 | ||
9238f36a JH |
5293 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status) |
5294 | { | |
5295 | hci_req_complete_t req_complete = NULL; | |
5296 | struct sk_buff *skb; | |
5297 | unsigned long flags; | |
5298 | ||
5299 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
5300 | ||
42c6b129 JH |
5301 | /* If the completed command doesn't match the last one that was |
5302 | * sent we need to do special handling of it. | |
9238f36a | 5303 | */ |
42c6b129 JH |
5304 | if (!hci_sent_cmd_data(hdev, opcode)) { |
5305 | /* Some CSR based controllers generate a spontaneous | |
5306 | * reset complete event during init and any pending | |
5307 | * command will never be completed. In such a case we | |
5308 | * need to resend whatever was the last sent | |
5309 | * command. | |
5310 | */ | |
5311 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
5312 | hci_resend_last(hdev); | |
5313 | ||
9238f36a | 5314 | return; |
42c6b129 | 5315 | } |
9238f36a JH |
5316 | |
5317 | /* If the command succeeded and there's still more commands in | |
5318 | * this request the request is not yet complete. | |
5319 | */ | |
5320 | if (!status && !hci_req_is_complete(hdev)) | |
5321 | return; | |
5322 | ||
5323 | /* If this was the last command in a request the complete | |
5324 | * callback would be found in hdev->sent_cmd instead of the | |
5325 | * command queue (hdev->cmd_q). | |
5326 | */ | |
5327 | if (hdev->sent_cmd) { | |
5328 | req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
53e21fbc JH |
5329 | |
5330 | if (req_complete) { | |
5331 | /* We must set the complete callback to NULL to | |
5332 | * avoid calling the callback more than once if | |
5333 | * this function gets called again. | |
5334 | */ | |
5335 | bt_cb(hdev->sent_cmd)->req.complete = NULL; | |
5336 | ||
9238f36a | 5337 | goto call_complete; |
53e21fbc | 5338 | } |
9238f36a JH |
5339 | } |
5340 | ||
5341 | /* Remove all pending commands belonging to this request */ | |
5342 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
5343 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
5344 | if (bt_cb(skb)->req.start) { | |
5345 | __skb_queue_head(&hdev->cmd_q, skb); | |
5346 | break; | |
5347 | } | |
5348 | ||
5349 | req_complete = bt_cb(skb)->req.complete; | |
5350 | kfree_skb(skb); | |
5351 | } | |
5352 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
5353 | ||
5354 | call_complete: | |
5355 | if (req_complete) | |
5356 | req_complete(hdev, status); | |
5357 | } | |
5358 | ||
b78752cc | 5359 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 5360 | { |
b78752cc | 5361 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
5362 | struct sk_buff *skb; |
5363 | ||
5364 | BT_DBG("%s", hdev->name); | |
5365 | ||
1da177e4 | 5366 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
5367 | /* Send copy to monitor */ |
5368 | hci_send_to_monitor(hdev, skb); | |
5369 | ||
1da177e4 LT |
5370 | if (atomic_read(&hdev->promisc)) { |
5371 | /* Send copy to the sockets */ | |
470fe1b5 | 5372 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
5373 | } |
5374 | ||
fee746b0 | 5375 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1da177e4 LT |
5376 | kfree_skb(skb); |
5377 | continue; | |
5378 | } | |
5379 | ||
5380 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
5381 | /* Don't process data packets in this states. */ | |
0d48d939 | 5382 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
5383 | case HCI_ACLDATA_PKT: |
5384 | case HCI_SCODATA_PKT: | |
5385 | kfree_skb(skb); | |
5386 | continue; | |
3ff50b79 | 5387 | } |
1da177e4 LT |
5388 | } |
5389 | ||
5390 | /* Process frame */ | |
0d48d939 | 5391 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 5392 | case HCI_EVENT_PKT: |
b78752cc | 5393 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
5394 | hci_event_packet(hdev, skb); |
5395 | break; | |
5396 | ||
5397 | case HCI_ACLDATA_PKT: | |
5398 | BT_DBG("%s ACL data packet", hdev->name); | |
5399 | hci_acldata_packet(hdev, skb); | |
5400 | break; | |
5401 | ||
5402 | case HCI_SCODATA_PKT: | |
5403 | BT_DBG("%s SCO data packet", hdev->name); | |
5404 | hci_scodata_packet(hdev, skb); | |
5405 | break; | |
5406 | ||
5407 | default: | |
5408 | kfree_skb(skb); | |
5409 | break; | |
5410 | } | |
5411 | } | |
1da177e4 LT |
5412 | } |
5413 | ||
c347b765 | 5414 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 5415 | { |
c347b765 | 5416 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
5417 | struct sk_buff *skb; |
5418 | ||
2104786b AE |
5419 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
5420 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 5421 | |
1da177e4 | 5422 | /* Send queued commands */ |
5a08ecce AE |
5423 | if (atomic_read(&hdev->cmd_cnt)) { |
5424 | skb = skb_dequeue(&hdev->cmd_q); | |
5425 | if (!skb) | |
5426 | return; | |
5427 | ||
7585b97a | 5428 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 5429 | |
a675d7f1 | 5430 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 5431 | if (hdev->sent_cmd) { |
1da177e4 | 5432 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 5433 | hci_send_frame(hdev, skb); |
7bdb8a5c | 5434 | if (test_bit(HCI_RESET, &hdev->flags)) |
65cc2b49 | 5435 | cancel_delayed_work(&hdev->cmd_timer); |
7bdb8a5c | 5436 | else |
65cc2b49 MH |
5437 | schedule_delayed_work(&hdev->cmd_timer, |
5438 | HCI_CMD_TIMEOUT); | |
1da177e4 LT |
5439 | } else { |
5440 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 5441 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
5442 | } |
5443 | } | |
5444 | } | |
b1efcc28 AG |
5445 | |
5446 | void hci_req_add_le_scan_disable(struct hci_request *req) | |
5447 | { | |
5448 | struct hci_cp_le_set_scan_enable cp; | |
5449 | ||
5450 | memset(&cp, 0, sizeof(cp)); | |
5451 | cp.enable = LE_SCAN_DISABLE; | |
5452 | hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
5453 | } | |
a4790dbd | 5454 | |
8540f6c0 MH |
5455 | static void add_to_white_list(struct hci_request *req, |
5456 | struct hci_conn_params *params) | |
5457 | { | |
5458 | struct hci_cp_le_add_to_white_list cp; | |
5459 | ||
5460 | cp.bdaddr_type = params->addr_type; | |
5461 | bacpy(&cp.bdaddr, ¶ms->addr); | |
5462 | ||
5463 | hci_req_add(req, HCI_OP_LE_ADD_TO_WHITE_LIST, sizeof(cp), &cp); | |
5464 | } | |
5465 | ||
5466 | static u8 update_white_list(struct hci_request *req) | |
5467 | { | |
5468 | struct hci_dev *hdev = req->hdev; | |
5469 | struct hci_conn_params *params; | |
5470 | struct bdaddr_list *b; | |
5471 | uint8_t white_list_entries = 0; | |
5472 | ||
5473 | /* Go through the current white list programmed into the | |
5474 | * controller one by one and check if that address is still | |
5475 | * in the list of pending connections or list of devices to | |
5476 | * report. If not present in either list, then queue the | |
5477 | * command to remove it from the controller. | |
5478 | */ | |
5479 | list_for_each_entry(b, &hdev->le_white_list, list) { | |
5480 | struct hci_cp_le_del_from_white_list cp; | |
5481 | ||
5482 | if (hci_pend_le_action_lookup(&hdev->pend_le_conns, | |
5483 | &b->bdaddr, b->bdaddr_type) || | |
5484 | hci_pend_le_action_lookup(&hdev->pend_le_reports, | |
5485 | &b->bdaddr, b->bdaddr_type)) { | |
5486 | white_list_entries++; | |
5487 | continue; | |
5488 | } | |
5489 | ||
5490 | cp.bdaddr_type = b->bdaddr_type; | |
5491 | bacpy(&cp.bdaddr, &b->bdaddr); | |
5492 | ||
5493 | hci_req_add(req, HCI_OP_LE_DEL_FROM_WHITE_LIST, | |
5494 | sizeof(cp), &cp); | |
5495 | } | |
5496 | ||
5497 | /* Since all no longer valid white list entries have been | |
5498 | * removed, walk through the list of pending connections | |
5499 | * and ensure that any new device gets programmed into | |
5500 | * the controller. | |
5501 | * | |
5502 | * If the list of the devices is larger than the list of | |
5503 | * available white list entries in the controller, then | |
5504 | * just abort and return filer policy value to not use the | |
5505 | * white list. | |
5506 | */ | |
5507 | list_for_each_entry(params, &hdev->pend_le_conns, action) { | |
5508 | if (hci_bdaddr_list_lookup(&hdev->le_white_list, | |
5509 | ¶ms->addr, params->addr_type)) | |
5510 | continue; | |
5511 | ||
5512 | if (white_list_entries >= hdev->le_white_list_size) { | |
5513 | /* Select filter policy to accept all advertising */ | |
5514 | return 0x00; | |
5515 | } | |
5516 | ||
66d8e837 MH |
5517 | if (hci_find_irk_by_addr(hdev, ¶ms->addr, |
5518 | params->addr_type)) { | |
5519 | /* White list can not be used with RPAs */ | |
5520 | return 0x00; | |
5521 | } | |
5522 | ||
8540f6c0 MH |
5523 | white_list_entries++; |
5524 | add_to_white_list(req, params); | |
5525 | } | |
5526 | ||
5527 | /* After adding all new pending connections, walk through | |
5528 | * the list of pending reports and also add these to the | |
5529 | * white list if there is still space. | |
5530 | */ | |
5531 | list_for_each_entry(params, &hdev->pend_le_reports, action) { | |
5532 | if (hci_bdaddr_list_lookup(&hdev->le_white_list, | |
5533 | ¶ms->addr, params->addr_type)) | |
5534 | continue; | |
5535 | ||
5536 | if (white_list_entries >= hdev->le_white_list_size) { | |
5537 | /* Select filter policy to accept all advertising */ | |
5538 | return 0x00; | |
5539 | } | |
5540 | ||
66d8e837 MH |
5541 | if (hci_find_irk_by_addr(hdev, ¶ms->addr, |
5542 | params->addr_type)) { | |
5543 | /* White list can not be used with RPAs */ | |
5544 | return 0x00; | |
5545 | } | |
5546 | ||
8540f6c0 MH |
5547 | white_list_entries++; |
5548 | add_to_white_list(req, params); | |
5549 | } | |
5550 | ||
5551 | /* Select filter policy to use white list */ | |
5552 | return 0x01; | |
5553 | } | |
5554 | ||
8ef30fd3 AG |
5555 | void hci_req_add_le_passive_scan(struct hci_request *req) |
5556 | { | |
5557 | struct hci_cp_le_set_scan_param param_cp; | |
5558 | struct hci_cp_le_set_scan_enable enable_cp; | |
5559 | struct hci_dev *hdev = req->hdev; | |
5560 | u8 own_addr_type; | |
8540f6c0 | 5561 | u8 filter_policy; |
8ef30fd3 | 5562 | |
6ab535a7 MH |
5563 | /* Set require_privacy to false since no SCAN_REQ are send |
5564 | * during passive scanning. Not using an unresolvable address | |
5565 | * here is important so that peer devices using direct | |
5566 | * advertising with our address will be correctly reported | |
5567 | * by the controller. | |
8ef30fd3 | 5568 | */ |
6ab535a7 | 5569 | if (hci_update_random_address(req, false, &own_addr_type)) |
8ef30fd3 AG |
5570 | return; |
5571 | ||
8540f6c0 MH |
5572 | /* Adding or removing entries from the white list must |
5573 | * happen before enabling scanning. The controller does | |
5574 | * not allow white list modification while scanning. | |
5575 | */ | |
5576 | filter_policy = update_white_list(req); | |
5577 | ||
8ef30fd3 AG |
5578 | memset(¶m_cp, 0, sizeof(param_cp)); |
5579 | param_cp.type = LE_SCAN_PASSIVE; | |
5580 | param_cp.interval = cpu_to_le16(hdev->le_scan_interval); | |
5581 | param_cp.window = cpu_to_le16(hdev->le_scan_window); | |
5582 | param_cp.own_address_type = own_addr_type; | |
8540f6c0 | 5583 | param_cp.filter_policy = filter_policy; |
8ef30fd3 AG |
5584 | hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp), |
5585 | ¶m_cp); | |
5586 | ||
5587 | memset(&enable_cp, 0, sizeof(enable_cp)); | |
5588 | enable_cp.enable = LE_SCAN_ENABLE; | |
4340a124 | 5589 | enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; |
8ef30fd3 AG |
5590 | hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp), |
5591 | &enable_cp); | |
5592 | } | |
5593 | ||
a4790dbd AG |
5594 | static void update_background_scan_complete(struct hci_dev *hdev, u8 status) |
5595 | { | |
5596 | if (status) | |
5597 | BT_DBG("HCI request failed to update background scanning: " | |
5598 | "status 0x%2.2x", status); | |
5599 | } | |
5600 | ||
5601 | /* This function controls the background scanning based on hdev->pend_le_conns | |
5602 | * list. If there are pending LE connection we start the background scanning, | |
5603 | * otherwise we stop it. | |
5604 | * | |
5605 | * This function requires the caller holds hdev->lock. | |
5606 | */ | |
5607 | void hci_update_background_scan(struct hci_dev *hdev) | |
5608 | { | |
a4790dbd AG |
5609 | struct hci_request req; |
5610 | struct hci_conn *conn; | |
5611 | int err; | |
5612 | ||
c20c02d5 MH |
5613 | if (!test_bit(HCI_UP, &hdev->flags) || |
5614 | test_bit(HCI_INIT, &hdev->flags) || | |
5615 | test_bit(HCI_SETUP, &hdev->dev_flags) || | |
d603b76b | 5616 | test_bit(HCI_CONFIG, &hdev->dev_flags) || |
b8221770 | 5617 | test_bit(HCI_AUTO_OFF, &hdev->dev_flags) || |
c20c02d5 | 5618 | test_bit(HCI_UNREGISTER, &hdev->dev_flags)) |
1c1697c0 MH |
5619 | return; |
5620 | ||
a70f4b5f JH |
5621 | /* No point in doing scanning if LE support hasn't been enabled */ |
5622 | if (!test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) | |
5623 | return; | |
5624 | ||
ae23ada4 JH |
5625 | /* If discovery is active don't interfere with it */ |
5626 | if (hdev->discovery.state != DISCOVERY_STOPPED) | |
5627 | return; | |
5628 | ||
a4790dbd AG |
5629 | hci_req_init(&req, hdev); |
5630 | ||
d1d588c1 | 5631 | if (list_empty(&hdev->pend_le_conns) && |
66f8455a | 5632 | list_empty(&hdev->pend_le_reports)) { |
0d2bf134 JH |
5633 | /* If there is no pending LE connections or devices |
5634 | * to be scanned for, we should stop the background | |
5635 | * scanning. | |
a4790dbd AG |
5636 | */ |
5637 | ||
5638 | /* If controller is not scanning we are done. */ | |
5639 | if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
5640 | return; | |
5641 | ||
5642 | hci_req_add_le_scan_disable(&req); | |
5643 | ||
5644 | BT_DBG("%s stopping background scanning", hdev->name); | |
5645 | } else { | |
a4790dbd AG |
5646 | /* If there is at least one pending LE connection, we should |
5647 | * keep the background scan running. | |
5648 | */ | |
5649 | ||
a4790dbd AG |
5650 | /* If controller is connecting, we should not start scanning |
5651 | * since some controllers are not able to scan and connect at | |
5652 | * the same time. | |
5653 | */ | |
5654 | conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT); | |
5655 | if (conn) | |
5656 | return; | |
5657 | ||
4340a124 AG |
5658 | /* If controller is currently scanning, we stop it to ensure we |
5659 | * don't miss any advertising (due to duplicates filter). | |
5660 | */ | |
5661 | if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
5662 | hci_req_add_le_scan_disable(&req); | |
5663 | ||
8ef30fd3 | 5664 | hci_req_add_le_passive_scan(&req); |
a4790dbd AG |
5665 | |
5666 | BT_DBG("%s starting background scanning", hdev->name); | |
5667 | } | |
5668 | ||
5669 | err = hci_req_run(&req, update_background_scan_complete); | |
5670 | if (err) | |
5671 | BT_ERR("Failed to run HCI request: err %d", err); | |
5672 | } | |
432df05e | 5673 | |
22f433dc JH |
5674 | static bool disconnected_whitelist_entries(struct hci_dev *hdev) |
5675 | { | |
5676 | struct bdaddr_list *b; | |
5677 | ||
5678 | list_for_each_entry(b, &hdev->whitelist, list) { | |
5679 | struct hci_conn *conn; | |
5680 | ||
5681 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &b->bdaddr); | |
5682 | if (!conn) | |
5683 | return true; | |
5684 | ||
5685 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
5686 | return true; | |
5687 | } | |
5688 | ||
5689 | return false; | |
5690 | } | |
5691 | ||
432df05e JH |
5692 | void hci_update_page_scan(struct hci_dev *hdev, struct hci_request *req) |
5693 | { | |
5694 | u8 scan; | |
5695 | ||
5696 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) | |
5697 | return; | |
5698 | ||
5699 | if (!hdev_is_powered(hdev)) | |
5700 | return; | |
5701 | ||
5702 | if (mgmt_powering_down(hdev)) | |
5703 | return; | |
5704 | ||
5705 | if (test_bit(HCI_CONNECTABLE, &hdev->dev_flags) || | |
22f433dc | 5706 | disconnected_whitelist_entries(hdev)) |
432df05e JH |
5707 | scan = SCAN_PAGE; |
5708 | else | |
5709 | scan = SCAN_DISABLED; | |
5710 | ||
5711 | if (test_bit(HCI_PSCAN, &hdev->flags) == !!(scan & SCAN_PAGE)) | |
5712 | return; | |
5713 | ||
5714 | if (test_bit(HCI_DISCOVERABLE, &hdev->dev_flags)) | |
5715 | scan |= SCAN_INQUIRY; | |
5716 | ||
5717 | if (req) | |
5718 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); | |
5719 | else | |
5720 | hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); | |
5721 | } |