Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
3df92b31 | 29 | #include <linux/idr.h> |
8c520a59 | 30 | #include <linux/rfkill.h> |
baf27f6e | 31 | #include <linux/debugfs.h> |
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> | |
37 | ||
970c4e46 JH |
38 | #include "smp.h" |
39 | ||
b78752cc | 40 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 41 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 42 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 43 | |
1da177e4 LT |
44 | /* HCI device list */ |
45 | LIST_HEAD(hci_dev_list); | |
46 | DEFINE_RWLOCK(hci_dev_list_lock); | |
47 | ||
48 | /* HCI callback list */ | |
49 | LIST_HEAD(hci_cb_list); | |
50 | DEFINE_RWLOCK(hci_cb_list_lock); | |
51 | ||
3df92b31 SL |
52 | /* HCI ID Numbering */ |
53 | static DEFINE_IDA(hci_index_ida); | |
54 | ||
1da177e4 LT |
55 | /* ---- HCI notifications ---- */ |
56 | ||
6516455d | 57 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 58 | { |
040030ef | 59 | hci_sock_dev_event(hdev, event); |
1da177e4 LT |
60 | } |
61 | ||
baf27f6e MH |
62 | /* ---- HCI debugfs entries ---- */ |
63 | ||
4b4148e9 MH |
64 | static ssize_t dut_mode_read(struct file *file, char __user *user_buf, |
65 | size_t count, loff_t *ppos) | |
66 | { | |
67 | struct hci_dev *hdev = file->private_data; | |
68 | char buf[3]; | |
69 | ||
70 | buf[0] = test_bit(HCI_DUT_MODE, &hdev->dev_flags) ? 'Y': 'N'; | |
71 | buf[1] = '\n'; | |
72 | buf[2] = '\0'; | |
73 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
74 | } | |
75 | ||
76 | static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, | |
77 | size_t count, loff_t *ppos) | |
78 | { | |
79 | struct hci_dev *hdev = file->private_data; | |
80 | struct sk_buff *skb; | |
81 | char buf[32]; | |
82 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
83 | bool enable; | |
84 | int err; | |
85 | ||
86 | if (!test_bit(HCI_UP, &hdev->flags)) | |
87 | return -ENETDOWN; | |
88 | ||
89 | if (copy_from_user(buf, user_buf, buf_size)) | |
90 | return -EFAULT; | |
91 | ||
92 | buf[buf_size] = '\0'; | |
93 | if (strtobool(buf, &enable)) | |
94 | return -EINVAL; | |
95 | ||
96 | if (enable == test_bit(HCI_DUT_MODE, &hdev->dev_flags)) | |
97 | return -EALREADY; | |
98 | ||
99 | hci_req_lock(hdev); | |
100 | if (enable) | |
101 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, | |
102 | HCI_CMD_TIMEOUT); | |
103 | else | |
104 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, | |
105 | HCI_CMD_TIMEOUT); | |
106 | hci_req_unlock(hdev); | |
107 | ||
108 | if (IS_ERR(skb)) | |
109 | return PTR_ERR(skb); | |
110 | ||
111 | err = -bt_to_errno(skb->data[0]); | |
112 | kfree_skb(skb); | |
113 | ||
114 | if (err < 0) | |
115 | return err; | |
116 | ||
117 | change_bit(HCI_DUT_MODE, &hdev->dev_flags); | |
118 | ||
119 | return count; | |
120 | } | |
121 | ||
122 | static const struct file_operations dut_mode_fops = { | |
123 | .open = simple_open, | |
124 | .read = dut_mode_read, | |
125 | .write = dut_mode_write, | |
126 | .llseek = default_llseek, | |
127 | }; | |
128 | ||
dfb826a8 MH |
129 | static int features_show(struct seq_file *f, void *ptr) |
130 | { | |
131 | struct hci_dev *hdev = f->private; | |
132 | u8 p; | |
133 | ||
134 | hci_dev_lock(hdev); | |
135 | for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
cfbb2b5b | 136 | seq_printf(f, "%2u: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x " |
dfb826a8 MH |
137 | "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n", p, |
138 | hdev->features[p][0], hdev->features[p][1], | |
139 | hdev->features[p][2], hdev->features[p][3], | |
140 | hdev->features[p][4], hdev->features[p][5], | |
141 | hdev->features[p][6], hdev->features[p][7]); | |
142 | } | |
cfbb2b5b MH |
143 | if (lmp_le_capable(hdev)) |
144 | seq_printf(f, "LE: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x " | |
145 | "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n", | |
146 | hdev->le_features[0], hdev->le_features[1], | |
147 | hdev->le_features[2], hdev->le_features[3], | |
148 | hdev->le_features[4], hdev->le_features[5], | |
149 | hdev->le_features[6], hdev->le_features[7]); | |
dfb826a8 MH |
150 | hci_dev_unlock(hdev); |
151 | ||
152 | return 0; | |
153 | } | |
154 | ||
155 | static int features_open(struct inode *inode, struct file *file) | |
156 | { | |
157 | return single_open(file, features_show, inode->i_private); | |
158 | } | |
159 | ||
160 | static const struct file_operations features_fops = { | |
161 | .open = features_open, | |
162 | .read = seq_read, | |
163 | .llseek = seq_lseek, | |
164 | .release = single_release, | |
165 | }; | |
166 | ||
70afe0b8 MH |
167 | static int blacklist_show(struct seq_file *f, void *p) |
168 | { | |
169 | struct hci_dev *hdev = f->private; | |
170 | struct bdaddr_list *b; | |
171 | ||
172 | hci_dev_lock(hdev); | |
173 | list_for_each_entry(b, &hdev->blacklist, list) | |
b25f0785 | 174 | seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type); |
70afe0b8 MH |
175 | hci_dev_unlock(hdev); |
176 | ||
177 | return 0; | |
178 | } | |
179 | ||
180 | static int blacklist_open(struct inode *inode, struct file *file) | |
181 | { | |
182 | return single_open(file, blacklist_show, inode->i_private); | |
183 | } | |
184 | ||
185 | static const struct file_operations blacklist_fops = { | |
186 | .open = blacklist_open, | |
187 | .read = seq_read, | |
188 | .llseek = seq_lseek, | |
189 | .release = single_release, | |
190 | }; | |
191 | ||
47219839 MH |
192 | static int uuids_show(struct seq_file *f, void *p) |
193 | { | |
194 | struct hci_dev *hdev = f->private; | |
195 | struct bt_uuid *uuid; | |
196 | ||
197 | hci_dev_lock(hdev); | |
198 | list_for_each_entry(uuid, &hdev->uuids, list) { | |
58f01aa9 MH |
199 | u8 i, val[16]; |
200 | ||
201 | /* The Bluetooth UUID values are stored in big endian, | |
202 | * but with reversed byte order. So convert them into | |
203 | * the right order for the %pUb modifier. | |
204 | */ | |
205 | for (i = 0; i < 16; i++) | |
206 | val[i] = uuid->uuid[15 - i]; | |
207 | ||
208 | seq_printf(f, "%pUb\n", val); | |
47219839 MH |
209 | } |
210 | hci_dev_unlock(hdev); | |
211 | ||
212 | return 0; | |
213 | } | |
214 | ||
215 | static int uuids_open(struct inode *inode, struct file *file) | |
216 | { | |
217 | return single_open(file, uuids_show, inode->i_private); | |
218 | } | |
219 | ||
220 | static const struct file_operations uuids_fops = { | |
221 | .open = uuids_open, | |
222 | .read = seq_read, | |
223 | .llseek = seq_lseek, | |
224 | .release = single_release, | |
225 | }; | |
226 | ||
baf27f6e MH |
227 | static int inquiry_cache_show(struct seq_file *f, void *p) |
228 | { | |
229 | struct hci_dev *hdev = f->private; | |
230 | struct discovery_state *cache = &hdev->discovery; | |
231 | struct inquiry_entry *e; | |
232 | ||
233 | hci_dev_lock(hdev); | |
234 | ||
235 | list_for_each_entry(e, &cache->all, all) { | |
236 | struct inquiry_data *data = &e->data; | |
237 | seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", | |
238 | &data->bdaddr, | |
239 | data->pscan_rep_mode, data->pscan_period_mode, | |
240 | data->pscan_mode, data->dev_class[2], | |
241 | data->dev_class[1], data->dev_class[0], | |
242 | __le16_to_cpu(data->clock_offset), | |
243 | data->rssi, data->ssp_mode, e->timestamp); | |
244 | } | |
245 | ||
246 | hci_dev_unlock(hdev); | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
251 | static int inquiry_cache_open(struct inode *inode, struct file *file) | |
252 | { | |
253 | return single_open(file, inquiry_cache_show, inode->i_private); | |
254 | } | |
255 | ||
256 | static const struct file_operations inquiry_cache_fops = { | |
257 | .open = inquiry_cache_open, | |
258 | .read = seq_read, | |
259 | .llseek = seq_lseek, | |
260 | .release = single_release, | |
261 | }; | |
262 | ||
02d08d15 MH |
263 | static int link_keys_show(struct seq_file *f, void *ptr) |
264 | { | |
265 | struct hci_dev *hdev = f->private; | |
266 | struct list_head *p, *n; | |
267 | ||
268 | hci_dev_lock(hdev); | |
269 | list_for_each_safe(p, n, &hdev->link_keys) { | |
270 | struct link_key *key = list_entry(p, struct link_key, list); | |
271 | seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type, | |
272 | HCI_LINK_KEY_SIZE, key->val, key->pin_len); | |
273 | } | |
274 | hci_dev_unlock(hdev); | |
275 | ||
276 | return 0; | |
277 | } | |
278 | ||
279 | static int link_keys_open(struct inode *inode, struct file *file) | |
280 | { | |
281 | return single_open(file, link_keys_show, inode->i_private); | |
282 | } | |
283 | ||
284 | static const struct file_operations link_keys_fops = { | |
285 | .open = link_keys_open, | |
286 | .read = seq_read, | |
287 | .llseek = seq_lseek, | |
288 | .release = single_release, | |
289 | }; | |
290 | ||
babdbb3c MH |
291 | static int dev_class_show(struct seq_file *f, void *ptr) |
292 | { | |
293 | struct hci_dev *hdev = f->private; | |
294 | ||
295 | hci_dev_lock(hdev); | |
296 | seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2], | |
297 | hdev->dev_class[1], hdev->dev_class[0]); | |
298 | hci_dev_unlock(hdev); | |
299 | ||
300 | return 0; | |
301 | } | |
302 | ||
303 | static int dev_class_open(struct inode *inode, struct file *file) | |
304 | { | |
305 | return single_open(file, dev_class_show, inode->i_private); | |
306 | } | |
307 | ||
308 | static const struct file_operations dev_class_fops = { | |
309 | .open = dev_class_open, | |
310 | .read = seq_read, | |
311 | .llseek = seq_lseek, | |
312 | .release = single_release, | |
313 | }; | |
314 | ||
041000b9 MH |
315 | static int voice_setting_get(void *data, u64 *val) |
316 | { | |
317 | struct hci_dev *hdev = data; | |
318 | ||
319 | hci_dev_lock(hdev); | |
320 | *val = hdev->voice_setting; | |
321 | hci_dev_unlock(hdev); | |
322 | ||
323 | return 0; | |
324 | } | |
325 | ||
326 | DEFINE_SIMPLE_ATTRIBUTE(voice_setting_fops, voice_setting_get, | |
327 | NULL, "0x%4.4llx\n"); | |
328 | ||
ebd1e33b MH |
329 | static int auto_accept_delay_set(void *data, u64 val) |
330 | { | |
331 | struct hci_dev *hdev = data; | |
332 | ||
333 | hci_dev_lock(hdev); | |
334 | hdev->auto_accept_delay = val; | |
335 | hci_dev_unlock(hdev); | |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
340 | static int auto_accept_delay_get(void *data, u64 *val) | |
341 | { | |
342 | struct hci_dev *hdev = data; | |
343 | ||
344 | hci_dev_lock(hdev); | |
345 | *val = hdev->auto_accept_delay; | |
346 | hci_dev_unlock(hdev); | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
351 | DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get, | |
352 | auto_accept_delay_set, "%llu\n"); | |
353 | ||
06f5b778 MH |
354 | static int ssp_debug_mode_set(void *data, u64 val) |
355 | { | |
356 | struct hci_dev *hdev = data; | |
357 | struct sk_buff *skb; | |
358 | __u8 mode; | |
359 | int err; | |
360 | ||
361 | if (val != 0 && val != 1) | |
362 | return -EINVAL; | |
363 | ||
364 | if (!test_bit(HCI_UP, &hdev->flags)) | |
365 | return -ENETDOWN; | |
366 | ||
367 | hci_req_lock(hdev); | |
368 | mode = val; | |
369 | skb = __hci_cmd_sync(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE, sizeof(mode), | |
370 | &mode, HCI_CMD_TIMEOUT); | |
371 | hci_req_unlock(hdev); | |
372 | ||
373 | if (IS_ERR(skb)) | |
374 | return PTR_ERR(skb); | |
375 | ||
376 | err = -bt_to_errno(skb->data[0]); | |
377 | kfree_skb(skb); | |
378 | ||
379 | if (err < 0) | |
380 | return err; | |
381 | ||
382 | hci_dev_lock(hdev); | |
383 | hdev->ssp_debug_mode = val; | |
384 | hci_dev_unlock(hdev); | |
385 | ||
386 | return 0; | |
387 | } | |
388 | ||
389 | static int ssp_debug_mode_get(void *data, u64 *val) | |
390 | { | |
391 | struct hci_dev *hdev = data; | |
392 | ||
393 | hci_dev_lock(hdev); | |
394 | *val = hdev->ssp_debug_mode; | |
395 | hci_dev_unlock(hdev); | |
396 | ||
397 | return 0; | |
398 | } | |
399 | ||
400 | DEFINE_SIMPLE_ATTRIBUTE(ssp_debug_mode_fops, ssp_debug_mode_get, | |
401 | ssp_debug_mode_set, "%llu\n"); | |
402 | ||
5afeac14 MH |
403 | static ssize_t force_sc_support_read(struct file *file, char __user *user_buf, |
404 | size_t count, loff_t *ppos) | |
405 | { | |
406 | struct hci_dev *hdev = file->private_data; | |
407 | char buf[3]; | |
408 | ||
409 | buf[0] = test_bit(HCI_FORCE_SC, &hdev->dev_flags) ? 'Y': 'N'; | |
410 | buf[1] = '\n'; | |
411 | buf[2] = '\0'; | |
412 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
413 | } | |
414 | ||
415 | static ssize_t force_sc_support_write(struct file *file, | |
416 | const char __user *user_buf, | |
417 | size_t count, loff_t *ppos) | |
418 | { | |
419 | struct hci_dev *hdev = file->private_data; | |
420 | char buf[32]; | |
421 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
422 | bool enable; | |
423 | ||
424 | if (test_bit(HCI_UP, &hdev->flags)) | |
425 | return -EBUSY; | |
426 | ||
427 | if (copy_from_user(buf, user_buf, buf_size)) | |
428 | return -EFAULT; | |
429 | ||
430 | buf[buf_size] = '\0'; | |
431 | if (strtobool(buf, &enable)) | |
432 | return -EINVAL; | |
433 | ||
434 | if (enable == test_bit(HCI_FORCE_SC, &hdev->dev_flags)) | |
435 | return -EALREADY; | |
436 | ||
437 | change_bit(HCI_FORCE_SC, &hdev->dev_flags); | |
438 | ||
439 | return count; | |
440 | } | |
441 | ||
442 | static const struct file_operations force_sc_support_fops = { | |
443 | .open = simple_open, | |
444 | .read = force_sc_support_read, | |
445 | .write = force_sc_support_write, | |
446 | .llseek = default_llseek, | |
447 | }; | |
448 | ||
134c2a89 MH |
449 | static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf, |
450 | size_t count, loff_t *ppos) | |
451 | { | |
452 | struct hci_dev *hdev = file->private_data; | |
453 | char buf[3]; | |
454 | ||
455 | buf[0] = test_bit(HCI_SC_ONLY, &hdev->dev_flags) ? 'Y': 'N'; | |
456 | buf[1] = '\n'; | |
457 | buf[2] = '\0'; | |
458 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
459 | } | |
460 | ||
461 | static const struct file_operations sc_only_mode_fops = { | |
462 | .open = simple_open, | |
463 | .read = sc_only_mode_read, | |
464 | .llseek = default_llseek, | |
465 | }; | |
466 | ||
2bfa3531 MH |
467 | static int idle_timeout_set(void *data, u64 val) |
468 | { | |
469 | struct hci_dev *hdev = data; | |
470 | ||
471 | if (val != 0 && (val < 500 || val > 3600000)) | |
472 | return -EINVAL; | |
473 | ||
474 | hci_dev_lock(hdev); | |
2be48b65 | 475 | hdev->idle_timeout = val; |
2bfa3531 MH |
476 | hci_dev_unlock(hdev); |
477 | ||
478 | return 0; | |
479 | } | |
480 | ||
481 | static int idle_timeout_get(void *data, u64 *val) | |
482 | { | |
483 | struct hci_dev *hdev = data; | |
484 | ||
485 | hci_dev_lock(hdev); | |
486 | *val = hdev->idle_timeout; | |
487 | hci_dev_unlock(hdev); | |
488 | ||
489 | return 0; | |
490 | } | |
491 | ||
492 | DEFINE_SIMPLE_ATTRIBUTE(idle_timeout_fops, idle_timeout_get, | |
493 | idle_timeout_set, "%llu\n"); | |
494 | ||
c982b2ea JH |
495 | static int rpa_timeout_set(void *data, u64 val) |
496 | { | |
497 | struct hci_dev *hdev = data; | |
498 | ||
499 | /* Require the RPA timeout to be at least 30 seconds and at most | |
500 | * 24 hours. | |
501 | */ | |
502 | if (val < 30 || val > (60 * 60 * 24)) | |
503 | return -EINVAL; | |
504 | ||
505 | hci_dev_lock(hdev); | |
506 | hdev->rpa_timeout = val; | |
507 | hci_dev_unlock(hdev); | |
508 | ||
509 | return 0; | |
510 | } | |
511 | ||
512 | static int rpa_timeout_get(void *data, u64 *val) | |
513 | { | |
514 | struct hci_dev *hdev = data; | |
515 | ||
516 | hci_dev_lock(hdev); | |
517 | *val = hdev->rpa_timeout; | |
518 | hci_dev_unlock(hdev); | |
519 | ||
520 | return 0; | |
521 | } | |
522 | ||
523 | DEFINE_SIMPLE_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get, | |
524 | rpa_timeout_set, "%llu\n"); | |
525 | ||
2bfa3531 MH |
526 | static int sniff_min_interval_set(void *data, u64 val) |
527 | { | |
528 | struct hci_dev *hdev = data; | |
529 | ||
530 | if (val == 0 || val % 2 || val > hdev->sniff_max_interval) | |
531 | return -EINVAL; | |
532 | ||
533 | hci_dev_lock(hdev); | |
2be48b65 | 534 | hdev->sniff_min_interval = val; |
2bfa3531 MH |
535 | hci_dev_unlock(hdev); |
536 | ||
537 | return 0; | |
538 | } | |
539 | ||
540 | static int sniff_min_interval_get(void *data, u64 *val) | |
541 | { | |
542 | struct hci_dev *hdev = data; | |
543 | ||
544 | hci_dev_lock(hdev); | |
545 | *val = hdev->sniff_min_interval; | |
546 | hci_dev_unlock(hdev); | |
547 | ||
548 | return 0; | |
549 | } | |
550 | ||
551 | DEFINE_SIMPLE_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get, | |
552 | sniff_min_interval_set, "%llu\n"); | |
553 | ||
554 | static int sniff_max_interval_set(void *data, u64 val) | |
555 | { | |
556 | struct hci_dev *hdev = data; | |
557 | ||
558 | if (val == 0 || val % 2 || val < hdev->sniff_min_interval) | |
559 | return -EINVAL; | |
560 | ||
561 | hci_dev_lock(hdev); | |
2be48b65 | 562 | hdev->sniff_max_interval = val; |
2bfa3531 MH |
563 | hci_dev_unlock(hdev); |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
568 | static int sniff_max_interval_get(void *data, u64 *val) | |
569 | { | |
570 | struct hci_dev *hdev = data; | |
571 | ||
572 | hci_dev_lock(hdev); | |
573 | *val = hdev->sniff_max_interval; | |
574 | hci_dev_unlock(hdev); | |
575 | ||
576 | return 0; | |
577 | } | |
578 | ||
579 | DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get, | |
580 | sniff_max_interval_set, "%llu\n"); | |
581 | ||
ac345813 MH |
582 | static int identity_show(struct seq_file *f, void *p) |
583 | { | |
584 | struct hci_dev *hdev = f->private; | |
585 | bdaddr_t *addr; | |
586 | u8 addr_type; | |
587 | ||
588 | hci_dev_lock(hdev); | |
589 | ||
590 | if (test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags) || | |
591 | !bacmp(&hdev->bdaddr, BDADDR_ANY)) { | |
592 | addr = &hdev->static_addr; | |
593 | addr_type = ADDR_LE_DEV_RANDOM; | |
594 | } else { | |
595 | addr = &hdev->bdaddr; | |
596 | addr_type = ADDR_LE_DEV_PUBLIC; | |
597 | } | |
598 | ||
473deef2 MH |
599 | seq_printf(f, "%pMR (type %u) %*phN %pMR\n", addr, addr_type, |
600 | 16, hdev->irk, &hdev->rpa); | |
ac345813 MH |
601 | |
602 | hci_dev_unlock(hdev); | |
603 | ||
604 | return 0; | |
605 | } | |
606 | ||
607 | static int identity_open(struct inode *inode, struct file *file) | |
608 | { | |
609 | return single_open(file, identity_show, inode->i_private); | |
610 | } | |
611 | ||
612 | static const struct file_operations identity_fops = { | |
613 | .open = identity_open, | |
614 | .read = seq_read, | |
615 | .llseek = seq_lseek, | |
616 | .release = single_release, | |
617 | }; | |
618 | ||
7a4cd51d MH |
619 | static int random_address_show(struct seq_file *f, void *p) |
620 | { | |
621 | struct hci_dev *hdev = f->private; | |
622 | ||
623 | hci_dev_lock(hdev); | |
624 | seq_printf(f, "%pMR\n", &hdev->random_addr); | |
625 | hci_dev_unlock(hdev); | |
626 | ||
627 | return 0; | |
628 | } | |
629 | ||
630 | static int random_address_open(struct inode *inode, struct file *file) | |
631 | { | |
632 | return single_open(file, random_address_show, inode->i_private); | |
633 | } | |
634 | ||
635 | static const struct file_operations random_address_fops = { | |
636 | .open = random_address_open, | |
637 | .read = seq_read, | |
638 | .llseek = seq_lseek, | |
639 | .release = single_release, | |
640 | }; | |
641 | ||
e7b8fc92 MH |
642 | static int static_address_show(struct seq_file *f, void *p) |
643 | { | |
644 | struct hci_dev *hdev = f->private; | |
645 | ||
646 | hci_dev_lock(hdev); | |
647 | seq_printf(f, "%pMR\n", &hdev->static_addr); | |
648 | hci_dev_unlock(hdev); | |
649 | ||
650 | return 0; | |
651 | } | |
652 | ||
653 | static int static_address_open(struct inode *inode, struct file *file) | |
654 | { | |
655 | return single_open(file, static_address_show, inode->i_private); | |
656 | } | |
657 | ||
658 | static const struct file_operations static_address_fops = { | |
659 | .open = static_address_open, | |
660 | .read = seq_read, | |
661 | .llseek = seq_lseek, | |
662 | .release = single_release, | |
663 | }; | |
664 | ||
b32bba6c MH |
665 | static ssize_t force_static_address_read(struct file *file, |
666 | char __user *user_buf, | |
667 | size_t count, loff_t *ppos) | |
92202185 | 668 | { |
b32bba6c MH |
669 | struct hci_dev *hdev = file->private_data; |
670 | char buf[3]; | |
92202185 | 671 | |
b32bba6c MH |
672 | buf[0] = test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags) ? 'Y': 'N'; |
673 | buf[1] = '\n'; | |
674 | buf[2] = '\0'; | |
675 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
92202185 MH |
676 | } |
677 | ||
b32bba6c MH |
678 | static ssize_t force_static_address_write(struct file *file, |
679 | const char __user *user_buf, | |
680 | size_t count, loff_t *ppos) | |
92202185 | 681 | { |
b32bba6c MH |
682 | struct hci_dev *hdev = file->private_data; |
683 | char buf[32]; | |
684 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
685 | bool enable; | |
92202185 | 686 | |
b32bba6c MH |
687 | if (test_bit(HCI_UP, &hdev->flags)) |
688 | return -EBUSY; | |
92202185 | 689 | |
b32bba6c MH |
690 | if (copy_from_user(buf, user_buf, buf_size)) |
691 | return -EFAULT; | |
692 | ||
693 | buf[buf_size] = '\0'; | |
694 | if (strtobool(buf, &enable)) | |
695 | return -EINVAL; | |
696 | ||
697 | if (enable == test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags)) | |
698 | return -EALREADY; | |
699 | ||
700 | change_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags); | |
701 | ||
702 | return count; | |
92202185 MH |
703 | } |
704 | ||
b32bba6c MH |
705 | static const struct file_operations force_static_address_fops = { |
706 | .open = simple_open, | |
707 | .read = force_static_address_read, | |
708 | .write = force_static_address_write, | |
709 | .llseek = default_llseek, | |
710 | }; | |
92202185 | 711 | |
3698d704 MH |
712 | static int identity_resolving_keys_show(struct seq_file *f, void *ptr) |
713 | { | |
714 | struct hci_dev *hdev = f->private; | |
715 | struct list_head *p, *n; | |
716 | ||
717 | hci_dev_lock(hdev); | |
718 | list_for_each_safe(p, n, &hdev->identity_resolving_keys) { | |
719 | struct smp_irk *irk = list_entry(p, struct smp_irk, list); | |
720 | seq_printf(f, "%pMR (type %u) %*phN %pMR\n", | |
721 | &irk->bdaddr, irk->addr_type, | |
722 | 16, irk->val, &irk->rpa); | |
723 | } | |
724 | hci_dev_unlock(hdev); | |
725 | ||
726 | return 0; | |
727 | } | |
728 | ||
729 | static int identity_resolving_keys_open(struct inode *inode, struct file *file) | |
730 | { | |
731 | return single_open(file, identity_resolving_keys_show, | |
732 | inode->i_private); | |
733 | } | |
734 | ||
735 | static const struct file_operations identity_resolving_keys_fops = { | |
736 | .open = identity_resolving_keys_open, | |
737 | .read = seq_read, | |
738 | .llseek = seq_lseek, | |
739 | .release = single_release, | |
740 | }; | |
741 | ||
8f8625cd MH |
742 | static int long_term_keys_show(struct seq_file *f, void *ptr) |
743 | { | |
744 | struct hci_dev *hdev = f->private; | |
745 | struct list_head *p, *n; | |
746 | ||
747 | hci_dev_lock(hdev); | |
f813f1be | 748 | list_for_each_safe(p, n, &hdev->long_term_keys) { |
8f8625cd | 749 | struct smp_ltk *ltk = list_entry(p, struct smp_ltk, list); |
f813f1be | 750 | seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %*phN %*phN\n", |
8f8625cd MH |
751 | <k->bdaddr, ltk->bdaddr_type, ltk->authenticated, |
752 | ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv), | |
753 | 8, ltk->rand, 16, ltk->val); | |
754 | } | |
755 | hci_dev_unlock(hdev); | |
756 | ||
757 | return 0; | |
758 | } | |
759 | ||
760 | static int long_term_keys_open(struct inode *inode, struct file *file) | |
761 | { | |
762 | return single_open(file, long_term_keys_show, inode->i_private); | |
763 | } | |
764 | ||
765 | static const struct file_operations long_term_keys_fops = { | |
766 | .open = long_term_keys_open, | |
767 | .read = seq_read, | |
768 | .llseek = seq_lseek, | |
769 | .release = single_release, | |
770 | }; | |
771 | ||
4e70c7e7 MH |
772 | static int conn_min_interval_set(void *data, u64 val) |
773 | { | |
774 | struct hci_dev *hdev = data; | |
775 | ||
776 | if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval) | |
777 | return -EINVAL; | |
778 | ||
779 | hci_dev_lock(hdev); | |
2be48b65 | 780 | hdev->le_conn_min_interval = val; |
4e70c7e7 MH |
781 | hci_dev_unlock(hdev); |
782 | ||
783 | return 0; | |
784 | } | |
785 | ||
786 | static int conn_min_interval_get(void *data, u64 *val) | |
787 | { | |
788 | struct hci_dev *hdev = data; | |
789 | ||
790 | hci_dev_lock(hdev); | |
791 | *val = hdev->le_conn_min_interval; | |
792 | hci_dev_unlock(hdev); | |
793 | ||
794 | return 0; | |
795 | } | |
796 | ||
797 | DEFINE_SIMPLE_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get, | |
798 | conn_min_interval_set, "%llu\n"); | |
799 | ||
800 | static int conn_max_interval_set(void *data, u64 val) | |
801 | { | |
802 | struct hci_dev *hdev = data; | |
803 | ||
804 | if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval) | |
805 | return -EINVAL; | |
806 | ||
807 | hci_dev_lock(hdev); | |
2be48b65 | 808 | hdev->le_conn_max_interval = val; |
4e70c7e7 MH |
809 | hci_dev_unlock(hdev); |
810 | ||
811 | return 0; | |
812 | } | |
813 | ||
814 | static int conn_max_interval_get(void *data, u64 *val) | |
815 | { | |
816 | struct hci_dev *hdev = data; | |
817 | ||
818 | hci_dev_lock(hdev); | |
819 | *val = hdev->le_conn_max_interval; | |
820 | hci_dev_unlock(hdev); | |
821 | ||
822 | return 0; | |
823 | } | |
824 | ||
825 | DEFINE_SIMPLE_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get, | |
826 | conn_max_interval_set, "%llu\n"); | |
827 | ||
3f959d46 MH |
828 | static int adv_channel_map_set(void *data, u64 val) |
829 | { | |
830 | struct hci_dev *hdev = data; | |
831 | ||
832 | if (val < 0x01 || val > 0x07) | |
833 | return -EINVAL; | |
834 | ||
835 | hci_dev_lock(hdev); | |
836 | hdev->le_adv_channel_map = val; | |
837 | hci_dev_unlock(hdev); | |
838 | ||
839 | return 0; | |
840 | } | |
841 | ||
842 | static int adv_channel_map_get(void *data, u64 *val) | |
843 | { | |
844 | struct hci_dev *hdev = data; | |
845 | ||
846 | hci_dev_lock(hdev); | |
847 | *val = hdev->le_adv_channel_map; | |
848 | hci_dev_unlock(hdev); | |
849 | ||
850 | return 0; | |
851 | } | |
852 | ||
853 | DEFINE_SIMPLE_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get, | |
854 | adv_channel_map_set, "%llu\n"); | |
855 | ||
89863109 JR |
856 | static ssize_t lowpan_read(struct file *file, char __user *user_buf, |
857 | size_t count, loff_t *ppos) | |
858 | { | |
859 | struct hci_dev *hdev = file->private_data; | |
860 | char buf[3]; | |
861 | ||
862 | buf[0] = test_bit(HCI_6LOWPAN_ENABLED, &hdev->dev_flags) ? 'Y' : 'N'; | |
863 | buf[1] = '\n'; | |
864 | buf[2] = '\0'; | |
865 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
866 | } | |
867 | ||
868 | static ssize_t lowpan_write(struct file *fp, const char __user *user_buffer, | |
869 | size_t count, loff_t *position) | |
870 | { | |
871 | struct hci_dev *hdev = fp->private_data; | |
872 | bool enable; | |
873 | char buf[32]; | |
874 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
875 | ||
876 | if (copy_from_user(buf, user_buffer, buf_size)) | |
877 | return -EFAULT; | |
878 | ||
879 | buf[buf_size] = '\0'; | |
880 | ||
881 | if (strtobool(buf, &enable) < 0) | |
882 | return -EINVAL; | |
883 | ||
884 | if (enable == test_bit(HCI_6LOWPAN_ENABLED, &hdev->dev_flags)) | |
885 | return -EALREADY; | |
886 | ||
887 | change_bit(HCI_6LOWPAN_ENABLED, &hdev->dev_flags); | |
888 | ||
889 | return count; | |
890 | } | |
891 | ||
892 | static const struct file_operations lowpan_debugfs_fops = { | |
893 | .open = simple_open, | |
894 | .read = lowpan_read, | |
895 | .write = lowpan_write, | |
896 | .llseek = default_llseek, | |
897 | }; | |
898 | ||
7d474e06 AG |
899 | static int le_auto_conn_show(struct seq_file *sf, void *ptr) |
900 | { | |
901 | struct hci_dev *hdev = sf->private; | |
902 | struct hci_conn_params *p; | |
903 | ||
904 | hci_dev_lock(hdev); | |
905 | ||
906 | list_for_each_entry(p, &hdev->le_conn_params, list) { | |
907 | seq_printf(sf, "%pMR %u %u\n", &p->addr, p->addr_type, | |
908 | p->auto_connect); | |
909 | } | |
910 | ||
911 | hci_dev_unlock(hdev); | |
912 | ||
913 | return 0; | |
914 | } | |
915 | ||
916 | static int le_auto_conn_open(struct inode *inode, struct file *file) | |
917 | { | |
918 | return single_open(file, le_auto_conn_show, inode->i_private); | |
919 | } | |
920 | ||
921 | static ssize_t le_auto_conn_write(struct file *file, const char __user *data, | |
922 | size_t count, loff_t *offset) | |
923 | { | |
924 | struct seq_file *sf = file->private_data; | |
925 | struct hci_dev *hdev = sf->private; | |
926 | u8 auto_connect = 0; | |
927 | bdaddr_t addr; | |
928 | u8 addr_type; | |
929 | char *buf; | |
930 | int err = 0; | |
931 | int n; | |
932 | ||
933 | /* Don't allow partial write */ | |
934 | if (*offset != 0) | |
935 | return -EINVAL; | |
936 | ||
937 | if (count < 3) | |
938 | return -EINVAL; | |
939 | ||
940 | buf = kzalloc(count, GFP_KERNEL); | |
941 | if (!buf) | |
942 | return -ENOMEM; | |
943 | ||
944 | if (copy_from_user(buf, data, count)) { | |
945 | err = -EFAULT; | |
946 | goto done; | |
947 | } | |
948 | ||
949 | if (memcmp(buf, "add", 3) == 0) { | |
950 | n = sscanf(&buf[4], "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx %hhu %hhu", | |
951 | &addr.b[5], &addr.b[4], &addr.b[3], &addr.b[2], | |
952 | &addr.b[1], &addr.b[0], &addr_type, | |
953 | &auto_connect); | |
954 | ||
955 | if (n < 7) { | |
956 | err = -EINVAL; | |
957 | goto done; | |
958 | } | |
959 | ||
960 | hci_dev_lock(hdev); | |
961 | err = hci_conn_params_add(hdev, &addr, addr_type, auto_connect, | |
962 | hdev->le_conn_min_interval, | |
963 | hdev->le_conn_max_interval); | |
964 | hci_dev_unlock(hdev); | |
965 | ||
966 | if (err) | |
967 | goto done; | |
968 | } else if (memcmp(buf, "del", 3) == 0) { | |
969 | n = sscanf(&buf[4], "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx %hhu", | |
970 | &addr.b[5], &addr.b[4], &addr.b[3], &addr.b[2], | |
971 | &addr.b[1], &addr.b[0], &addr_type); | |
972 | ||
973 | if (n < 7) { | |
974 | err = -EINVAL; | |
975 | goto done; | |
976 | } | |
977 | ||
978 | hci_dev_lock(hdev); | |
979 | hci_conn_params_del(hdev, &addr, addr_type); | |
980 | hci_dev_unlock(hdev); | |
981 | } else if (memcmp(buf, "clr", 3) == 0) { | |
982 | hci_dev_lock(hdev); | |
983 | hci_conn_params_clear(hdev); | |
984 | hci_pend_le_conns_clear(hdev); | |
985 | hci_update_background_scan(hdev); | |
986 | hci_dev_unlock(hdev); | |
987 | } else { | |
988 | err = -EINVAL; | |
989 | } | |
990 | ||
991 | done: | |
992 | kfree(buf); | |
993 | ||
994 | if (err) | |
995 | return err; | |
996 | else | |
997 | return count; | |
998 | } | |
999 | ||
1000 | static const struct file_operations le_auto_conn_fops = { | |
1001 | .open = le_auto_conn_open, | |
1002 | .read = seq_read, | |
1003 | .write = le_auto_conn_write, | |
1004 | .llseek = seq_lseek, | |
1005 | .release = single_release, | |
1006 | }; | |
1007 | ||
1da177e4 LT |
1008 | /* ---- HCI requests ---- */ |
1009 | ||
42c6b129 | 1010 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result) |
1da177e4 | 1011 | { |
42c6b129 | 1012 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
1da177e4 LT |
1013 | |
1014 | if (hdev->req_status == HCI_REQ_PEND) { | |
1015 | hdev->req_result = result; | |
1016 | hdev->req_status = HCI_REQ_DONE; | |
1017 | wake_up_interruptible(&hdev->req_wait_q); | |
1018 | } | |
1019 | } | |
1020 | ||
1021 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
1022 | { | |
1023 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
1024 | ||
1025 | if (hdev->req_status == HCI_REQ_PEND) { | |
1026 | hdev->req_result = err; | |
1027 | hdev->req_status = HCI_REQ_CANCELED; | |
1028 | wake_up_interruptible(&hdev->req_wait_q); | |
1029 | } | |
1030 | } | |
1031 | ||
77a63e0a FW |
1032 | static struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, |
1033 | u8 event) | |
75e84b7c JH |
1034 | { |
1035 | struct hci_ev_cmd_complete *ev; | |
1036 | struct hci_event_hdr *hdr; | |
1037 | struct sk_buff *skb; | |
1038 | ||
1039 | hci_dev_lock(hdev); | |
1040 | ||
1041 | skb = hdev->recv_evt; | |
1042 | hdev->recv_evt = NULL; | |
1043 | ||
1044 | hci_dev_unlock(hdev); | |
1045 | ||
1046 | if (!skb) | |
1047 | return ERR_PTR(-ENODATA); | |
1048 | ||
1049 | if (skb->len < sizeof(*hdr)) { | |
1050 | BT_ERR("Too short HCI event"); | |
1051 | goto failed; | |
1052 | } | |
1053 | ||
1054 | hdr = (void *) skb->data; | |
1055 | skb_pull(skb, HCI_EVENT_HDR_SIZE); | |
1056 | ||
7b1abbbe JH |
1057 | if (event) { |
1058 | if (hdr->evt != event) | |
1059 | goto failed; | |
1060 | return skb; | |
1061 | } | |
1062 | ||
75e84b7c JH |
1063 | if (hdr->evt != HCI_EV_CMD_COMPLETE) { |
1064 | BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt); | |
1065 | goto failed; | |
1066 | } | |
1067 | ||
1068 | if (skb->len < sizeof(*ev)) { | |
1069 | BT_ERR("Too short cmd_complete event"); | |
1070 | goto failed; | |
1071 | } | |
1072 | ||
1073 | ev = (void *) skb->data; | |
1074 | skb_pull(skb, sizeof(*ev)); | |
1075 | ||
1076 | if (opcode == __le16_to_cpu(ev->opcode)) | |
1077 | return skb; | |
1078 | ||
1079 | BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, | |
1080 | __le16_to_cpu(ev->opcode)); | |
1081 | ||
1082 | failed: | |
1083 | kfree_skb(skb); | |
1084 | return ERR_PTR(-ENODATA); | |
1085 | } | |
1086 | ||
7b1abbbe | 1087 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
07dc93dd | 1088 | const void *param, u8 event, u32 timeout) |
75e84b7c JH |
1089 | { |
1090 | DECLARE_WAITQUEUE(wait, current); | |
1091 | struct hci_request req; | |
1092 | int err = 0; | |
1093 | ||
1094 | BT_DBG("%s", hdev->name); | |
1095 | ||
1096 | hci_req_init(&req, hdev); | |
1097 | ||
7b1abbbe | 1098 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
1099 | |
1100 | hdev->req_status = HCI_REQ_PEND; | |
1101 | ||
1102 | err = hci_req_run(&req, hci_req_sync_complete); | |
1103 | if (err < 0) | |
1104 | return ERR_PTR(err); | |
1105 | ||
1106 | add_wait_queue(&hdev->req_wait_q, &wait); | |
1107 | set_current_state(TASK_INTERRUPTIBLE); | |
1108 | ||
1109 | schedule_timeout(timeout); | |
1110 | ||
1111 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
1112 | ||
1113 | if (signal_pending(current)) | |
1114 | return ERR_PTR(-EINTR); | |
1115 | ||
1116 | switch (hdev->req_status) { | |
1117 | case HCI_REQ_DONE: | |
1118 | err = -bt_to_errno(hdev->req_result); | |
1119 | break; | |
1120 | ||
1121 | case HCI_REQ_CANCELED: | |
1122 | err = -hdev->req_result; | |
1123 | break; | |
1124 | ||
1125 | default: | |
1126 | err = -ETIMEDOUT; | |
1127 | break; | |
1128 | } | |
1129 | ||
1130 | hdev->req_status = hdev->req_result = 0; | |
1131 | ||
1132 | BT_DBG("%s end: err %d", hdev->name, err); | |
1133 | ||
1134 | if (err < 0) | |
1135 | return ERR_PTR(err); | |
1136 | ||
7b1abbbe JH |
1137 | return hci_get_cmd_complete(hdev, opcode, event); |
1138 | } | |
1139 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
1140 | ||
1141 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
07dc93dd | 1142 | const void *param, u32 timeout) |
7b1abbbe JH |
1143 | { |
1144 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
1145 | } |
1146 | EXPORT_SYMBOL(__hci_cmd_sync); | |
1147 | ||
1da177e4 | 1148 | /* Execute request and wait for completion. */ |
01178cd4 | 1149 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
1150 | void (*func)(struct hci_request *req, |
1151 | unsigned long opt), | |
01178cd4 | 1152 | unsigned long opt, __u32 timeout) |
1da177e4 | 1153 | { |
42c6b129 | 1154 | struct hci_request req; |
1da177e4 LT |
1155 | DECLARE_WAITQUEUE(wait, current); |
1156 | int err = 0; | |
1157 | ||
1158 | BT_DBG("%s start", hdev->name); | |
1159 | ||
42c6b129 JH |
1160 | hci_req_init(&req, hdev); |
1161 | ||
1da177e4 LT |
1162 | hdev->req_status = HCI_REQ_PEND; |
1163 | ||
42c6b129 | 1164 | func(&req, opt); |
53cce22d | 1165 | |
42c6b129 JH |
1166 | err = hci_req_run(&req, hci_req_sync_complete); |
1167 | if (err < 0) { | |
53cce22d | 1168 | hdev->req_status = 0; |
920c8300 AG |
1169 | |
1170 | /* ENODATA means the HCI request command queue is empty. | |
1171 | * This can happen when a request with conditionals doesn't | |
1172 | * trigger any commands to be sent. This is normal behavior | |
1173 | * and should not trigger an error return. | |
42c6b129 | 1174 | */ |
920c8300 AG |
1175 | if (err == -ENODATA) |
1176 | return 0; | |
1177 | ||
1178 | return err; | |
53cce22d JH |
1179 | } |
1180 | ||
bc4445c7 AG |
1181 | add_wait_queue(&hdev->req_wait_q, &wait); |
1182 | set_current_state(TASK_INTERRUPTIBLE); | |
1183 | ||
1da177e4 LT |
1184 | schedule_timeout(timeout); |
1185 | ||
1186 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
1187 | ||
1188 | if (signal_pending(current)) | |
1189 | return -EINTR; | |
1190 | ||
1191 | switch (hdev->req_status) { | |
1192 | case HCI_REQ_DONE: | |
e175072f | 1193 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
1194 | break; |
1195 | ||
1196 | case HCI_REQ_CANCELED: | |
1197 | err = -hdev->req_result; | |
1198 | break; | |
1199 | ||
1200 | default: | |
1201 | err = -ETIMEDOUT; | |
1202 | break; | |
3ff50b79 | 1203 | } |
1da177e4 | 1204 | |
a5040efa | 1205 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
1206 | |
1207 | BT_DBG("%s end: err %d", hdev->name, err); | |
1208 | ||
1209 | return err; | |
1210 | } | |
1211 | ||
01178cd4 | 1212 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
1213 | void (*req)(struct hci_request *req, |
1214 | unsigned long opt), | |
01178cd4 | 1215 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
1216 | { |
1217 | int ret; | |
1218 | ||
7c6a329e MH |
1219 | if (!test_bit(HCI_UP, &hdev->flags)) |
1220 | return -ENETDOWN; | |
1221 | ||
1da177e4 LT |
1222 | /* Serialize all requests */ |
1223 | hci_req_lock(hdev); | |
01178cd4 | 1224 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
1225 | hci_req_unlock(hdev); |
1226 | ||
1227 | return ret; | |
1228 | } | |
1229 | ||
42c6b129 | 1230 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 1231 | { |
42c6b129 | 1232 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
1233 | |
1234 | /* Reset device */ | |
42c6b129 JH |
1235 | set_bit(HCI_RESET, &req->hdev->flags); |
1236 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
1237 | } |
1238 | ||
42c6b129 | 1239 | static void bredr_init(struct hci_request *req) |
1da177e4 | 1240 | { |
42c6b129 | 1241 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 1242 | |
1da177e4 | 1243 | /* Read Local Supported Features */ |
42c6b129 | 1244 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 1245 | |
1143e5a6 | 1246 | /* Read Local Version */ |
42c6b129 | 1247 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
1248 | |
1249 | /* Read BD Address */ | |
42c6b129 | 1250 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
1251 | } |
1252 | ||
42c6b129 | 1253 | static void amp_init(struct hci_request *req) |
e61ef499 | 1254 | { |
42c6b129 | 1255 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 1256 | |
e61ef499 | 1257 | /* Read Local Version */ |
42c6b129 | 1258 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 1259 | |
f6996cfe MH |
1260 | /* Read Local Supported Commands */ |
1261 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
1262 | ||
1263 | /* Read Local Supported Features */ | |
1264 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
1265 | ||
6bcbc489 | 1266 | /* Read Local AMP Info */ |
42c6b129 | 1267 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
1268 | |
1269 | /* Read Data Blk size */ | |
42c6b129 | 1270 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 1271 | |
f38ba941 MH |
1272 | /* Read Flow Control Mode */ |
1273 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
1274 | ||
7528ca1c MH |
1275 | /* Read Location Data */ |
1276 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
1277 | } |
1278 | ||
42c6b129 | 1279 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 1280 | { |
42c6b129 | 1281 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
1282 | |
1283 | BT_DBG("%s %ld", hdev->name, opt); | |
1284 | ||
11778716 AE |
1285 | /* Reset */ |
1286 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 1287 | hci_reset_req(req, 0); |
11778716 | 1288 | |
e61ef499 AE |
1289 | switch (hdev->dev_type) { |
1290 | case HCI_BREDR: | |
42c6b129 | 1291 | bredr_init(req); |
e61ef499 AE |
1292 | break; |
1293 | ||
1294 | case HCI_AMP: | |
42c6b129 | 1295 | amp_init(req); |
e61ef499 AE |
1296 | break; |
1297 | ||
1298 | default: | |
1299 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
1300 | break; | |
1301 | } | |
e61ef499 AE |
1302 | } |
1303 | ||
42c6b129 | 1304 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 1305 | { |
4ca048e3 MH |
1306 | struct hci_dev *hdev = req->hdev; |
1307 | ||
2177bab5 JH |
1308 | __le16 param; |
1309 | __u8 flt_type; | |
1310 | ||
1311 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 1312 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
1313 | |
1314 | /* Read Class of Device */ | |
42c6b129 | 1315 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
1316 | |
1317 | /* Read Local Name */ | |
42c6b129 | 1318 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
1319 | |
1320 | /* Read Voice Setting */ | |
42c6b129 | 1321 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 1322 | |
b4cb9fb2 MH |
1323 | /* Read Number of Supported IAC */ |
1324 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
1325 | ||
4b836f39 MH |
1326 | /* Read Current IAC LAP */ |
1327 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
1328 | ||
2177bab5 JH |
1329 | /* Clear Event Filters */ |
1330 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 1331 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
1332 | |
1333 | /* Connection accept timeout ~20 secs */ | |
1334 | param = __constant_cpu_to_le16(0x7d00); | |
42c6b129 | 1335 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 | 1336 | |
4ca048e3 MH |
1337 | /* AVM Berlin (31), aka "BlueFRITZ!", reports version 1.2, |
1338 | * but it does not support page scan related HCI commands. | |
1339 | */ | |
1340 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) { | |
f332ec66 JH |
1341 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); |
1342 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
1343 | } | |
2177bab5 JH |
1344 | } |
1345 | ||
42c6b129 | 1346 | static void le_setup(struct hci_request *req) |
2177bab5 | 1347 | { |
c73eee91 JH |
1348 | struct hci_dev *hdev = req->hdev; |
1349 | ||
2177bab5 | 1350 | /* Read LE Buffer Size */ |
42c6b129 | 1351 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
1352 | |
1353 | /* Read LE Local Supported Features */ | |
42c6b129 | 1354 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 JH |
1355 | |
1356 | /* Read LE Advertising Channel TX Power */ | |
42c6b129 | 1357 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); |
2177bab5 JH |
1358 | |
1359 | /* Read LE White List Size */ | |
42c6b129 | 1360 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 JH |
1361 | |
1362 | /* Read LE Supported States */ | |
42c6b129 | 1363 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); |
c73eee91 JH |
1364 | |
1365 | /* LE-only controllers have LE implicitly enabled */ | |
1366 | if (!lmp_bredr_capable(hdev)) | |
1367 | set_bit(HCI_LE_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
1368 | } |
1369 | ||
1370 | static u8 hci_get_inquiry_mode(struct hci_dev *hdev) | |
1371 | { | |
1372 | if (lmp_ext_inq_capable(hdev)) | |
1373 | return 0x02; | |
1374 | ||
1375 | if (lmp_inq_rssi_capable(hdev)) | |
1376 | return 0x01; | |
1377 | ||
1378 | if (hdev->manufacturer == 11 && hdev->hci_rev == 0x00 && | |
1379 | hdev->lmp_subver == 0x0757) | |
1380 | return 0x01; | |
1381 | ||
1382 | if (hdev->manufacturer == 15) { | |
1383 | if (hdev->hci_rev == 0x03 && hdev->lmp_subver == 0x6963) | |
1384 | return 0x01; | |
1385 | if (hdev->hci_rev == 0x09 && hdev->lmp_subver == 0x6963) | |
1386 | return 0x01; | |
1387 | if (hdev->hci_rev == 0x00 && hdev->lmp_subver == 0x6965) | |
1388 | return 0x01; | |
1389 | } | |
1390 | ||
1391 | if (hdev->manufacturer == 31 && hdev->hci_rev == 0x2005 && | |
1392 | hdev->lmp_subver == 0x1805) | |
1393 | return 0x01; | |
1394 | ||
1395 | return 0x00; | |
1396 | } | |
1397 | ||
42c6b129 | 1398 | static void hci_setup_inquiry_mode(struct hci_request *req) |
2177bab5 JH |
1399 | { |
1400 | u8 mode; | |
1401 | ||
42c6b129 | 1402 | mode = hci_get_inquiry_mode(req->hdev); |
2177bab5 | 1403 | |
42c6b129 | 1404 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); |
2177bab5 JH |
1405 | } |
1406 | ||
42c6b129 | 1407 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 1408 | { |
42c6b129 JH |
1409 | struct hci_dev *hdev = req->hdev; |
1410 | ||
2177bab5 JH |
1411 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
1412 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
1413 | * command otherwise. | |
1414 | */ | |
1415 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
1416 | ||
1417 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
1418 | * any event mask for pre 1.2 devices. | |
1419 | */ | |
1420 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
1421 | return; | |
1422 | ||
1423 | if (lmp_bredr_capable(hdev)) { | |
1424 | events[4] |= 0x01; /* Flow Specification Complete */ | |
1425 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
1426 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
1427 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
1428 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
1429 | } else { |
1430 | /* Use a different default for LE-only devices */ | |
1431 | memset(events, 0, sizeof(events)); | |
1432 | events[0] |= 0x10; /* Disconnection Complete */ | |
1433 | events[0] |= 0x80; /* Encryption Change */ | |
1434 | events[1] |= 0x08; /* Read Remote Version Information Complete */ | |
1435 | events[1] |= 0x20; /* Command Complete */ | |
1436 | events[1] |= 0x40; /* Command Status */ | |
1437 | events[1] |= 0x80; /* Hardware Error */ | |
1438 | events[2] |= 0x04; /* Number of Completed Packets */ | |
1439 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
1440 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
2177bab5 JH |
1441 | } |
1442 | ||
1443 | if (lmp_inq_rssi_capable(hdev)) | |
1444 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
1445 | ||
1446 | if (lmp_sniffsubr_capable(hdev)) | |
1447 | events[5] |= 0x20; /* Sniff Subrating */ | |
1448 | ||
1449 | if (lmp_pause_enc_capable(hdev)) | |
1450 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
1451 | ||
1452 | if (lmp_ext_inq_capable(hdev)) | |
1453 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
1454 | ||
1455 | if (lmp_no_flush_capable(hdev)) | |
1456 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
1457 | ||
1458 | if (lmp_lsto_capable(hdev)) | |
1459 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
1460 | ||
1461 | if (lmp_ssp_capable(hdev)) { | |
1462 | events[6] |= 0x01; /* IO Capability Request */ | |
1463 | events[6] |= 0x02; /* IO Capability Response */ | |
1464 | events[6] |= 0x04; /* User Confirmation Request */ | |
1465 | events[6] |= 0x08; /* User Passkey Request */ | |
1466 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
1467 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
1468 | events[7] |= 0x04; /* User Passkey Notification */ | |
1469 | events[7] |= 0x08; /* Keypress Notification */ | |
1470 | events[7] |= 0x10; /* Remote Host Supported | |
1471 | * Features Notification | |
1472 | */ | |
1473 | } | |
1474 | ||
1475 | if (lmp_le_capable(hdev)) | |
1476 | events[7] |= 0x20; /* LE Meta-Event */ | |
1477 | ||
42c6b129 | 1478 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
1479 | |
1480 | if (lmp_le_capable(hdev)) { | |
1481 | memset(events, 0, sizeof(events)); | |
1482 | events[0] = 0x1f; | |
42c6b129 JH |
1483 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, |
1484 | sizeof(events), events); | |
2177bab5 JH |
1485 | } |
1486 | } | |
1487 | ||
42c6b129 | 1488 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 1489 | { |
42c6b129 JH |
1490 | struct hci_dev *hdev = req->hdev; |
1491 | ||
2177bab5 | 1492 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 1493 | bredr_setup(req); |
56f87901 JH |
1494 | else |
1495 | clear_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
1496 | |
1497 | if (lmp_le_capable(hdev)) | |
42c6b129 | 1498 | le_setup(req); |
2177bab5 | 1499 | |
42c6b129 | 1500 | hci_setup_event_mask(req); |
2177bab5 | 1501 | |
3f8e2d75 JH |
1502 | /* AVM Berlin (31), aka "BlueFRITZ!", doesn't support the read |
1503 | * local supported commands HCI command. | |
1504 | */ | |
1505 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) | |
42c6b129 | 1506 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
1507 | |
1508 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
1509 | /* When SSP is available, then the host features page |
1510 | * should also be available as well. However some | |
1511 | * controllers list the max_page as 0 as long as SSP | |
1512 | * has not been enabled. To achieve proper debugging | |
1513 | * output, force the minimum max_page to 1 at least. | |
1514 | */ | |
1515 | hdev->max_page = 0x01; | |
1516 | ||
2177bab5 JH |
1517 | if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) { |
1518 | u8 mode = 0x01; | |
42c6b129 JH |
1519 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
1520 | sizeof(mode), &mode); | |
2177bab5 JH |
1521 | } else { |
1522 | struct hci_cp_write_eir cp; | |
1523 | ||
1524 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
1525 | memset(&cp, 0, sizeof(cp)); | |
1526 | ||
42c6b129 | 1527 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
1528 | } |
1529 | } | |
1530 | ||
1531 | if (lmp_inq_rssi_capable(hdev)) | |
42c6b129 | 1532 | hci_setup_inquiry_mode(req); |
2177bab5 JH |
1533 | |
1534 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 1535 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
1536 | |
1537 | if (lmp_ext_feat_capable(hdev)) { | |
1538 | struct hci_cp_read_local_ext_features cp; | |
1539 | ||
1540 | cp.page = 0x01; | |
42c6b129 JH |
1541 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
1542 | sizeof(cp), &cp); | |
2177bab5 JH |
1543 | } |
1544 | ||
1545 | if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) { | |
1546 | u8 enable = 1; | |
42c6b129 JH |
1547 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
1548 | &enable); | |
2177bab5 JH |
1549 | } |
1550 | } | |
1551 | ||
42c6b129 | 1552 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 1553 | { |
42c6b129 | 1554 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
1555 | struct hci_cp_write_def_link_policy cp; |
1556 | u16 link_policy = 0; | |
1557 | ||
1558 | if (lmp_rswitch_capable(hdev)) | |
1559 | link_policy |= HCI_LP_RSWITCH; | |
1560 | if (lmp_hold_capable(hdev)) | |
1561 | link_policy |= HCI_LP_HOLD; | |
1562 | if (lmp_sniff_capable(hdev)) | |
1563 | link_policy |= HCI_LP_SNIFF; | |
1564 | if (lmp_park_capable(hdev)) | |
1565 | link_policy |= HCI_LP_PARK; | |
1566 | ||
1567 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 1568 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
1569 | } |
1570 | ||
42c6b129 | 1571 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 1572 | { |
42c6b129 | 1573 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
1574 | struct hci_cp_write_le_host_supported cp; |
1575 | ||
c73eee91 JH |
1576 | /* LE-only devices do not support explicit enablement */ |
1577 | if (!lmp_bredr_capable(hdev)) | |
1578 | return; | |
1579 | ||
2177bab5 JH |
1580 | memset(&cp, 0, sizeof(cp)); |
1581 | ||
1582 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { | |
1583 | cp.le = 0x01; | |
1584 | cp.simul = lmp_le_br_capable(hdev); | |
1585 | } | |
1586 | ||
1587 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
1588 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
1589 | &cp); | |
2177bab5 JH |
1590 | } |
1591 | ||
d62e6d67 JH |
1592 | static void hci_set_event_mask_page_2(struct hci_request *req) |
1593 | { | |
1594 | struct hci_dev *hdev = req->hdev; | |
1595 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
1596 | ||
1597 | /* If Connectionless Slave Broadcast master role is supported | |
1598 | * enable all necessary events for it. | |
1599 | */ | |
53b834d2 | 1600 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
1601 | events[1] |= 0x40; /* Triggered Clock Capture */ |
1602 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
1603 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
1604 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
1605 | } | |
1606 | ||
1607 | /* If Connectionless Slave Broadcast slave role is supported | |
1608 | * enable all necessary events for it. | |
1609 | */ | |
53b834d2 | 1610 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
1611 | events[2] |= 0x01; /* Synchronization Train Received */ |
1612 | events[2] |= 0x02; /* CSB Receive */ | |
1613 | events[2] |= 0x04; /* CSB Timeout */ | |
1614 | events[2] |= 0x08; /* Truncated Page Complete */ | |
1615 | } | |
1616 | ||
40c59fcb MH |
1617 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
1618 | if (lmp_ping_capable(hdev)) | |
1619 | events[2] |= 0x80; | |
1620 | ||
d62e6d67 JH |
1621 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
1622 | } | |
1623 | ||
42c6b129 | 1624 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 1625 | { |
42c6b129 | 1626 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 1627 | u8 p; |
42c6b129 | 1628 | |
b8f4e068 GP |
1629 | /* Some Broadcom based Bluetooth controllers do not support the |
1630 | * Delete Stored Link Key command. They are clearly indicating its | |
1631 | * absence in the bit mask of supported commands. | |
1632 | * | |
1633 | * Check the supported commands and only if the the command is marked | |
1634 | * as supported send it. If not supported assume that the controller | |
1635 | * does not have actual support for stored link keys which makes this | |
1636 | * command redundant anyway. | |
f9f462fa MH |
1637 | * |
1638 | * Some controllers indicate that they support handling deleting | |
1639 | * stored link keys, but they don't. The quirk lets a driver | |
1640 | * just disable this command. | |
637b4cae | 1641 | */ |
f9f462fa MH |
1642 | if (hdev->commands[6] & 0x80 && |
1643 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
59f45d57 JH |
1644 | struct hci_cp_delete_stored_link_key cp; |
1645 | ||
1646 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
1647 | cp.delete_all = 0x01; | |
1648 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
1649 | sizeof(cp), &cp); | |
1650 | } | |
1651 | ||
2177bab5 | 1652 | if (hdev->commands[5] & 0x10) |
42c6b129 | 1653 | hci_setup_link_policy(req); |
2177bab5 | 1654 | |
7bf32048 | 1655 | if (lmp_le_capable(hdev)) |
42c6b129 | 1656 | hci_set_le_support(req); |
d2c5d77f JH |
1657 | |
1658 | /* Read features beyond page 1 if available */ | |
1659 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
1660 | struct hci_cp_read_local_ext_features cp; | |
1661 | ||
1662 | cp.page = p; | |
1663 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
1664 | sizeof(cp), &cp); | |
1665 | } | |
2177bab5 JH |
1666 | } |
1667 | ||
5d4e7e8d JH |
1668 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
1669 | { | |
1670 | struct hci_dev *hdev = req->hdev; | |
1671 | ||
d62e6d67 JH |
1672 | /* Set event mask page 2 if the HCI command for it is supported */ |
1673 | if (hdev->commands[22] & 0x04) | |
1674 | hci_set_event_mask_page_2(req); | |
1675 | ||
5d4e7e8d | 1676 | /* Check for Synchronization Train support */ |
53b834d2 | 1677 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 1678 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
1679 | |
1680 | /* Enable Secure Connections if supported and configured */ | |
5afeac14 MH |
1681 | if ((lmp_sc_capable(hdev) || |
1682 | test_bit(HCI_FORCE_SC, &hdev->dev_flags)) && | |
a6d0d690 MH |
1683 | test_bit(HCI_SC_ENABLED, &hdev->dev_flags)) { |
1684 | u8 support = 0x01; | |
1685 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, | |
1686 | sizeof(support), &support); | |
1687 | } | |
5d4e7e8d JH |
1688 | } |
1689 | ||
2177bab5 JH |
1690 | static int __hci_init(struct hci_dev *hdev) |
1691 | { | |
1692 | int err; | |
1693 | ||
1694 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
1695 | if (err < 0) | |
1696 | return err; | |
1697 | ||
4b4148e9 MH |
1698 | /* The Device Under Test (DUT) mode is special and available for |
1699 | * all controller types. So just create it early on. | |
1700 | */ | |
1701 | if (test_bit(HCI_SETUP, &hdev->dev_flags)) { | |
1702 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, | |
1703 | &dut_mode_fops); | |
1704 | } | |
1705 | ||
2177bab5 JH |
1706 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode |
1707 | * BR/EDR/LE type controllers. AMP controllers only need the | |
1708 | * first stage init. | |
1709 | */ | |
1710 | if (hdev->dev_type != HCI_BREDR) | |
1711 | return 0; | |
1712 | ||
1713 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); | |
1714 | if (err < 0) | |
1715 | return err; | |
1716 | ||
5d4e7e8d JH |
1717 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
1718 | if (err < 0) | |
1719 | return err; | |
1720 | ||
baf27f6e MH |
1721 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); |
1722 | if (err < 0) | |
1723 | return err; | |
1724 | ||
1725 | /* Only create debugfs entries during the initial setup | |
1726 | * phase and not every time the controller gets powered on. | |
1727 | */ | |
1728 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) | |
1729 | return 0; | |
1730 | ||
dfb826a8 MH |
1731 | debugfs_create_file("features", 0444, hdev->debugfs, hdev, |
1732 | &features_fops); | |
ceeb3bc0 MH |
1733 | debugfs_create_u16("manufacturer", 0444, hdev->debugfs, |
1734 | &hdev->manufacturer); | |
1735 | debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver); | |
1736 | debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev); | |
70afe0b8 MH |
1737 | debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev, |
1738 | &blacklist_fops); | |
47219839 MH |
1739 | debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops); |
1740 | ||
baf27f6e MH |
1741 | if (lmp_bredr_capable(hdev)) { |
1742 | debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, | |
1743 | hdev, &inquiry_cache_fops); | |
02d08d15 MH |
1744 | debugfs_create_file("link_keys", 0400, hdev->debugfs, |
1745 | hdev, &link_keys_fops); | |
babdbb3c MH |
1746 | debugfs_create_file("dev_class", 0444, hdev->debugfs, |
1747 | hdev, &dev_class_fops); | |
041000b9 MH |
1748 | debugfs_create_file("voice_setting", 0444, hdev->debugfs, |
1749 | hdev, &voice_setting_fops); | |
baf27f6e MH |
1750 | } |
1751 | ||
06f5b778 | 1752 | if (lmp_ssp_capable(hdev)) { |
ebd1e33b MH |
1753 | debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs, |
1754 | hdev, &auto_accept_delay_fops); | |
06f5b778 MH |
1755 | debugfs_create_file("ssp_debug_mode", 0644, hdev->debugfs, |
1756 | hdev, &ssp_debug_mode_fops); | |
5afeac14 MH |
1757 | debugfs_create_file("force_sc_support", 0644, hdev->debugfs, |
1758 | hdev, &force_sc_support_fops); | |
134c2a89 MH |
1759 | debugfs_create_file("sc_only_mode", 0444, hdev->debugfs, |
1760 | hdev, &sc_only_mode_fops); | |
06f5b778 | 1761 | } |
ebd1e33b | 1762 | |
2bfa3531 MH |
1763 | if (lmp_sniff_capable(hdev)) { |
1764 | debugfs_create_file("idle_timeout", 0644, hdev->debugfs, | |
1765 | hdev, &idle_timeout_fops); | |
1766 | debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs, | |
1767 | hdev, &sniff_min_interval_fops); | |
1768 | debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs, | |
1769 | hdev, &sniff_max_interval_fops); | |
1770 | } | |
1771 | ||
d0f729b8 | 1772 | if (lmp_le_capable(hdev)) { |
ac345813 MH |
1773 | debugfs_create_file("identity", 0400, hdev->debugfs, |
1774 | hdev, &identity_fops); | |
1775 | debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, | |
1776 | hdev, &rpa_timeout_fops); | |
7a4cd51d MH |
1777 | debugfs_create_file("random_address", 0444, hdev->debugfs, |
1778 | hdev, &random_address_fops); | |
b32bba6c MH |
1779 | debugfs_create_file("static_address", 0444, hdev->debugfs, |
1780 | hdev, &static_address_fops); | |
1781 | ||
1782 | /* For controllers with a public address, provide a debug | |
1783 | * option to force the usage of the configured static | |
1784 | * address. By default the public address is used. | |
1785 | */ | |
1786 | if (bacmp(&hdev->bdaddr, BDADDR_ANY)) | |
1787 | debugfs_create_file("force_static_address", 0644, | |
1788 | hdev->debugfs, hdev, | |
1789 | &force_static_address_fops); | |
1790 | ||
d0f729b8 MH |
1791 | debugfs_create_u8("white_list_size", 0444, hdev->debugfs, |
1792 | &hdev->le_white_list_size); | |
3698d704 MH |
1793 | debugfs_create_file("identity_resolving_keys", 0400, |
1794 | hdev->debugfs, hdev, | |
1795 | &identity_resolving_keys_fops); | |
8f8625cd MH |
1796 | debugfs_create_file("long_term_keys", 0400, hdev->debugfs, |
1797 | hdev, &long_term_keys_fops); | |
4e70c7e7 MH |
1798 | debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, |
1799 | hdev, &conn_min_interval_fops); | |
1800 | debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, | |
1801 | hdev, &conn_max_interval_fops); | |
3f959d46 MH |
1802 | debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, |
1803 | hdev, &adv_channel_map_fops); | |
89863109 JR |
1804 | debugfs_create_file("6lowpan", 0644, hdev->debugfs, hdev, |
1805 | &lowpan_debugfs_fops); | |
7d474e06 AG |
1806 | debugfs_create_file("le_auto_conn", 0644, hdev->debugfs, hdev, |
1807 | &le_auto_conn_fops); | |
d0f729b8 | 1808 | } |
e7b8fc92 | 1809 | |
baf27f6e | 1810 | return 0; |
2177bab5 JH |
1811 | } |
1812 | ||
42c6b129 | 1813 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1814 | { |
1815 | __u8 scan = opt; | |
1816 | ||
42c6b129 | 1817 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
1818 | |
1819 | /* Inquiry and Page scans */ | |
42c6b129 | 1820 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
1821 | } |
1822 | ||
42c6b129 | 1823 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1824 | { |
1825 | __u8 auth = opt; | |
1826 | ||
42c6b129 | 1827 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
1828 | |
1829 | /* Authentication */ | |
42c6b129 | 1830 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
1831 | } |
1832 | ||
42c6b129 | 1833 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1834 | { |
1835 | __u8 encrypt = opt; | |
1836 | ||
42c6b129 | 1837 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 1838 | |
e4e8e37c | 1839 | /* Encryption */ |
42c6b129 | 1840 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
1841 | } |
1842 | ||
42c6b129 | 1843 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
1844 | { |
1845 | __le16 policy = cpu_to_le16(opt); | |
1846 | ||
42c6b129 | 1847 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
1848 | |
1849 | /* Default link policy */ | |
42c6b129 | 1850 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
1851 | } |
1852 | ||
8e87d142 | 1853 | /* Get HCI device by index. |
1da177e4 LT |
1854 | * Device is held on return. */ |
1855 | struct hci_dev *hci_dev_get(int index) | |
1856 | { | |
8035ded4 | 1857 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
1858 | |
1859 | BT_DBG("%d", index); | |
1860 | ||
1861 | if (index < 0) | |
1862 | return NULL; | |
1863 | ||
1864 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 1865 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
1866 | if (d->id == index) { |
1867 | hdev = hci_dev_hold(d); | |
1868 | break; | |
1869 | } | |
1870 | } | |
1871 | read_unlock(&hci_dev_list_lock); | |
1872 | return hdev; | |
1873 | } | |
1da177e4 LT |
1874 | |
1875 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 1876 | |
30dc78e1 JH |
1877 | bool hci_discovery_active(struct hci_dev *hdev) |
1878 | { | |
1879 | struct discovery_state *discov = &hdev->discovery; | |
1880 | ||
6fbe195d | 1881 | switch (discov->state) { |
343f935b | 1882 | case DISCOVERY_FINDING: |
6fbe195d | 1883 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
1884 | return true; |
1885 | ||
6fbe195d AG |
1886 | default: |
1887 | return false; | |
1888 | } | |
30dc78e1 JH |
1889 | } |
1890 | ||
ff9ef578 JH |
1891 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
1892 | { | |
1893 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); | |
1894 | ||
1895 | if (hdev->discovery.state == state) | |
1896 | return; | |
1897 | ||
1898 | switch (state) { | |
1899 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
1900 | hci_update_background_scan(hdev); |
1901 | ||
7b99b659 AG |
1902 | if (hdev->discovery.state != DISCOVERY_STARTING) |
1903 | mgmt_discovering(hdev, 0); | |
ff9ef578 JH |
1904 | break; |
1905 | case DISCOVERY_STARTING: | |
1906 | break; | |
343f935b | 1907 | case DISCOVERY_FINDING: |
ff9ef578 JH |
1908 | mgmt_discovering(hdev, 1); |
1909 | break; | |
30dc78e1 JH |
1910 | case DISCOVERY_RESOLVING: |
1911 | break; | |
ff9ef578 JH |
1912 | case DISCOVERY_STOPPING: |
1913 | break; | |
1914 | } | |
1915 | ||
1916 | hdev->discovery.state = state; | |
1917 | } | |
1918 | ||
1f9b9a5d | 1919 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 1920 | { |
30883512 | 1921 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 1922 | struct inquiry_entry *p, *n; |
1da177e4 | 1923 | |
561aafbc JH |
1924 | list_for_each_entry_safe(p, n, &cache->all, all) { |
1925 | list_del(&p->all); | |
b57c1a56 | 1926 | kfree(p); |
1da177e4 | 1927 | } |
561aafbc JH |
1928 | |
1929 | INIT_LIST_HEAD(&cache->unknown); | |
1930 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
1931 | } |
1932 | ||
a8c5fb1a GP |
1933 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
1934 | bdaddr_t *bdaddr) | |
1da177e4 | 1935 | { |
30883512 | 1936 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1937 | struct inquiry_entry *e; |
1938 | ||
6ed93dc6 | 1939 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1940 | |
561aafbc JH |
1941 | list_for_each_entry(e, &cache->all, all) { |
1942 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1943 | return e; | |
1944 | } | |
1945 | ||
1946 | return NULL; | |
1947 | } | |
1948 | ||
1949 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 1950 | bdaddr_t *bdaddr) |
561aafbc | 1951 | { |
30883512 | 1952 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
1953 | struct inquiry_entry *e; |
1954 | ||
6ed93dc6 | 1955 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
1956 | |
1957 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 1958 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
1959 | return e; |
1960 | } | |
1961 | ||
1962 | return NULL; | |
1da177e4 LT |
1963 | } |
1964 | ||
30dc78e1 | 1965 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
1966 | bdaddr_t *bdaddr, |
1967 | int state) | |
30dc78e1 JH |
1968 | { |
1969 | struct discovery_state *cache = &hdev->discovery; | |
1970 | struct inquiry_entry *e; | |
1971 | ||
6ed93dc6 | 1972 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
1973 | |
1974 | list_for_each_entry(e, &cache->resolve, list) { | |
1975 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
1976 | return e; | |
1977 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1978 | return e; | |
1979 | } | |
1980 | ||
1981 | return NULL; | |
1982 | } | |
1983 | ||
a3d4e20a | 1984 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 1985 | struct inquiry_entry *ie) |
a3d4e20a JH |
1986 | { |
1987 | struct discovery_state *cache = &hdev->discovery; | |
1988 | struct list_head *pos = &cache->resolve; | |
1989 | struct inquiry_entry *p; | |
1990 | ||
1991 | list_del(&ie->list); | |
1992 | ||
1993 | list_for_each_entry(p, &cache->resolve, list) { | |
1994 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 1995 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
1996 | break; |
1997 | pos = &p->list; | |
1998 | } | |
1999 | ||
2000 | list_add(&ie->list, pos); | |
2001 | } | |
2002 | ||
3175405b | 2003 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
04124681 | 2004 | bool name_known, bool *ssp) |
1da177e4 | 2005 | { |
30883512 | 2006 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 2007 | struct inquiry_entry *ie; |
1da177e4 | 2008 | |
6ed93dc6 | 2009 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 2010 | |
2b2fec4d SJ |
2011 | hci_remove_remote_oob_data(hdev, &data->bdaddr); |
2012 | ||
388fc8fa JH |
2013 | if (ssp) |
2014 | *ssp = data->ssp_mode; | |
2015 | ||
70f23020 | 2016 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 2017 | if (ie) { |
388fc8fa JH |
2018 | if (ie->data.ssp_mode && ssp) |
2019 | *ssp = true; | |
2020 | ||
a3d4e20a | 2021 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 2022 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
2023 | ie->data.rssi = data->rssi; |
2024 | hci_inquiry_cache_update_resolve(hdev, ie); | |
2025 | } | |
2026 | ||
561aafbc | 2027 | goto update; |
a3d4e20a | 2028 | } |
561aafbc JH |
2029 | |
2030 | /* Entry not in the cache. Add new one. */ | |
2031 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
2032 | if (!ie) | |
3175405b | 2033 | return false; |
561aafbc JH |
2034 | |
2035 | list_add(&ie->all, &cache->all); | |
2036 | ||
2037 | if (name_known) { | |
2038 | ie->name_state = NAME_KNOWN; | |
2039 | } else { | |
2040 | ie->name_state = NAME_NOT_KNOWN; | |
2041 | list_add(&ie->list, &cache->unknown); | |
2042 | } | |
70f23020 | 2043 | |
561aafbc JH |
2044 | update: |
2045 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 2046 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
2047 | ie->name_state = NAME_KNOWN; |
2048 | list_del(&ie->list); | |
1da177e4 LT |
2049 | } |
2050 | ||
70f23020 AE |
2051 | memcpy(&ie->data, data, sizeof(*data)); |
2052 | ie->timestamp = jiffies; | |
1da177e4 | 2053 | cache->timestamp = jiffies; |
3175405b JH |
2054 | |
2055 | if (ie->name_state == NAME_NOT_KNOWN) | |
2056 | return false; | |
2057 | ||
2058 | return true; | |
1da177e4 LT |
2059 | } |
2060 | ||
2061 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
2062 | { | |
30883512 | 2063 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
2064 | struct inquiry_info *info = (struct inquiry_info *) buf; |
2065 | struct inquiry_entry *e; | |
2066 | int copied = 0; | |
2067 | ||
561aafbc | 2068 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 2069 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
2070 | |
2071 | if (copied >= num) | |
2072 | break; | |
2073 | ||
1da177e4 LT |
2074 | bacpy(&info->bdaddr, &data->bdaddr); |
2075 | info->pscan_rep_mode = data->pscan_rep_mode; | |
2076 | info->pscan_period_mode = data->pscan_period_mode; | |
2077 | info->pscan_mode = data->pscan_mode; | |
2078 | memcpy(info->dev_class, data->dev_class, 3); | |
2079 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 2080 | |
1da177e4 | 2081 | info++; |
b57c1a56 | 2082 | copied++; |
1da177e4 LT |
2083 | } |
2084 | ||
2085 | BT_DBG("cache %p, copied %d", cache, copied); | |
2086 | return copied; | |
2087 | } | |
2088 | ||
42c6b129 | 2089 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
2090 | { |
2091 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 2092 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
2093 | struct hci_cp_inquiry cp; |
2094 | ||
2095 | BT_DBG("%s", hdev->name); | |
2096 | ||
2097 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
2098 | return; | |
2099 | ||
2100 | /* Start Inquiry */ | |
2101 | memcpy(&cp.lap, &ir->lap, 3); | |
2102 | cp.length = ir->length; | |
2103 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 2104 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
2105 | } |
2106 | ||
3e13fa1e AG |
2107 | static int wait_inquiry(void *word) |
2108 | { | |
2109 | schedule(); | |
2110 | return signal_pending(current); | |
2111 | } | |
2112 | ||
1da177e4 LT |
2113 | int hci_inquiry(void __user *arg) |
2114 | { | |
2115 | __u8 __user *ptr = arg; | |
2116 | struct hci_inquiry_req ir; | |
2117 | struct hci_dev *hdev; | |
2118 | int err = 0, do_inquiry = 0, max_rsp; | |
2119 | long timeo; | |
2120 | __u8 *buf; | |
2121 | ||
2122 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
2123 | return -EFAULT; | |
2124 | ||
5a08ecce AE |
2125 | hdev = hci_dev_get(ir.dev_id); |
2126 | if (!hdev) | |
1da177e4 LT |
2127 | return -ENODEV; |
2128 | ||
0736cfa8 MH |
2129 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2130 | err = -EBUSY; | |
2131 | goto done; | |
2132 | } | |
2133 | ||
5b69bef5 MH |
2134 | if (hdev->dev_type != HCI_BREDR) { |
2135 | err = -EOPNOTSUPP; | |
2136 | goto done; | |
2137 | } | |
2138 | ||
56f87901 JH |
2139 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
2140 | err = -EOPNOTSUPP; | |
2141 | goto done; | |
2142 | } | |
2143 | ||
09fd0de5 | 2144 | hci_dev_lock(hdev); |
8e87d142 | 2145 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 2146 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 2147 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
2148 | do_inquiry = 1; |
2149 | } | |
09fd0de5 | 2150 | hci_dev_unlock(hdev); |
1da177e4 | 2151 | |
04837f64 | 2152 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
2153 | |
2154 | if (do_inquiry) { | |
01178cd4 JH |
2155 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
2156 | timeo); | |
70f23020 AE |
2157 | if (err < 0) |
2158 | goto done; | |
3e13fa1e AG |
2159 | |
2160 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
2161 | * cleared). If it is interrupted by a signal, return -EINTR. | |
2162 | */ | |
2163 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, wait_inquiry, | |
2164 | TASK_INTERRUPTIBLE)) | |
2165 | return -EINTR; | |
70f23020 | 2166 | } |
1da177e4 | 2167 | |
8fc9ced3 GP |
2168 | /* for unlimited number of responses we will use buffer with |
2169 | * 255 entries | |
2170 | */ | |
1da177e4 LT |
2171 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
2172 | ||
2173 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
2174 | * copy it to the user space. | |
2175 | */ | |
01df8c31 | 2176 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 2177 | if (!buf) { |
1da177e4 LT |
2178 | err = -ENOMEM; |
2179 | goto done; | |
2180 | } | |
2181 | ||
09fd0de5 | 2182 | hci_dev_lock(hdev); |
1da177e4 | 2183 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 2184 | hci_dev_unlock(hdev); |
1da177e4 LT |
2185 | |
2186 | BT_DBG("num_rsp %d", ir.num_rsp); | |
2187 | ||
2188 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
2189 | ptr += sizeof(ir); | |
2190 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 2191 | ir.num_rsp)) |
1da177e4 | 2192 | err = -EFAULT; |
8e87d142 | 2193 | } else |
1da177e4 LT |
2194 | err = -EFAULT; |
2195 | ||
2196 | kfree(buf); | |
2197 | ||
2198 | done: | |
2199 | hci_dev_put(hdev); | |
2200 | return err; | |
2201 | } | |
2202 | ||
cbed0ca1 | 2203 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 2204 | { |
1da177e4 LT |
2205 | int ret = 0; |
2206 | ||
1da177e4 LT |
2207 | BT_DBG("%s %p", hdev->name, hdev); |
2208 | ||
2209 | hci_req_lock(hdev); | |
2210 | ||
94324962 JH |
2211 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
2212 | ret = -ENODEV; | |
2213 | goto done; | |
2214 | } | |
2215 | ||
a5c8f270 MH |
2216 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) { |
2217 | /* Check for rfkill but allow the HCI setup stage to | |
2218 | * proceed (which in itself doesn't cause any RF activity). | |
2219 | */ | |
2220 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags)) { | |
2221 | ret = -ERFKILL; | |
2222 | goto done; | |
2223 | } | |
2224 | ||
2225 | /* Check for valid public address or a configured static | |
2226 | * random adddress, but let the HCI setup proceed to | |
2227 | * be able to determine if there is a public address | |
2228 | * or not. | |
2229 | * | |
c6beca0e MH |
2230 | * In case of user channel usage, it is not important |
2231 | * if a public address or static random address is | |
2232 | * available. | |
2233 | * | |
a5c8f270 MH |
2234 | * This check is only valid for BR/EDR controllers |
2235 | * since AMP controllers do not have an address. | |
2236 | */ | |
c6beca0e MH |
2237 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
2238 | hdev->dev_type == HCI_BREDR && | |
a5c8f270 MH |
2239 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
2240 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
2241 | ret = -EADDRNOTAVAIL; | |
2242 | goto done; | |
2243 | } | |
611b30f7 MH |
2244 | } |
2245 | ||
1da177e4 LT |
2246 | if (test_bit(HCI_UP, &hdev->flags)) { |
2247 | ret = -EALREADY; | |
2248 | goto done; | |
2249 | } | |
2250 | ||
1da177e4 LT |
2251 | if (hdev->open(hdev)) { |
2252 | ret = -EIO; | |
2253 | goto done; | |
2254 | } | |
2255 | ||
f41c70c4 MH |
2256 | atomic_set(&hdev->cmd_cnt, 1); |
2257 | set_bit(HCI_INIT, &hdev->flags); | |
2258 | ||
2259 | if (hdev->setup && test_bit(HCI_SETUP, &hdev->dev_flags)) | |
2260 | ret = hdev->setup(hdev); | |
2261 | ||
2262 | if (!ret) { | |
f41c70c4 MH |
2263 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
2264 | set_bit(HCI_RAW, &hdev->flags); | |
2265 | ||
0736cfa8 MH |
2266 | if (!test_bit(HCI_RAW, &hdev->flags) && |
2267 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) | |
f41c70c4 | 2268 | ret = __hci_init(hdev); |
1da177e4 LT |
2269 | } |
2270 | ||
f41c70c4 MH |
2271 | clear_bit(HCI_INIT, &hdev->flags); |
2272 | ||
1da177e4 LT |
2273 | if (!ret) { |
2274 | hci_dev_hold(hdev); | |
d6bfd59c | 2275 | set_bit(HCI_RPA_EXPIRED, &hdev->dev_flags); |
1da177e4 LT |
2276 | set_bit(HCI_UP, &hdev->flags); |
2277 | hci_notify(hdev, HCI_DEV_UP); | |
bb4b2a9a | 2278 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
0736cfa8 | 2279 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
1514b892 | 2280 | hdev->dev_type == HCI_BREDR) { |
09fd0de5 | 2281 | hci_dev_lock(hdev); |
744cf19e | 2282 | mgmt_powered(hdev, 1); |
09fd0de5 | 2283 | hci_dev_unlock(hdev); |
56e5cb86 | 2284 | } |
8e87d142 | 2285 | } else { |
1da177e4 | 2286 | /* Init failed, cleanup */ |
3eff45ea | 2287 | flush_work(&hdev->tx_work); |
c347b765 | 2288 | flush_work(&hdev->cmd_work); |
b78752cc | 2289 | flush_work(&hdev->rx_work); |
1da177e4 LT |
2290 | |
2291 | skb_queue_purge(&hdev->cmd_q); | |
2292 | skb_queue_purge(&hdev->rx_q); | |
2293 | ||
2294 | if (hdev->flush) | |
2295 | hdev->flush(hdev); | |
2296 | ||
2297 | if (hdev->sent_cmd) { | |
2298 | kfree_skb(hdev->sent_cmd); | |
2299 | hdev->sent_cmd = NULL; | |
2300 | } | |
2301 | ||
2302 | hdev->close(hdev); | |
2303 | hdev->flags = 0; | |
2304 | } | |
2305 | ||
2306 | done: | |
2307 | hci_req_unlock(hdev); | |
1da177e4 LT |
2308 | return ret; |
2309 | } | |
2310 | ||
cbed0ca1 JH |
2311 | /* ---- HCI ioctl helpers ---- */ |
2312 | ||
2313 | int hci_dev_open(__u16 dev) | |
2314 | { | |
2315 | struct hci_dev *hdev; | |
2316 | int err; | |
2317 | ||
2318 | hdev = hci_dev_get(dev); | |
2319 | if (!hdev) | |
2320 | return -ENODEV; | |
2321 | ||
e1d08f40 JH |
2322 | /* We need to ensure that no other power on/off work is pending |
2323 | * before proceeding to call hci_dev_do_open. This is | |
2324 | * particularly important if the setup procedure has not yet | |
2325 | * completed. | |
2326 | */ | |
2327 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
2328 | cancel_delayed_work(&hdev->power_off); | |
2329 | ||
a5c8f270 MH |
2330 | /* After this call it is guaranteed that the setup procedure |
2331 | * has finished. This means that error conditions like RFKILL | |
2332 | * or no valid public or static random address apply. | |
2333 | */ | |
e1d08f40 JH |
2334 | flush_workqueue(hdev->req_workqueue); |
2335 | ||
cbed0ca1 JH |
2336 | err = hci_dev_do_open(hdev); |
2337 | ||
2338 | hci_dev_put(hdev); | |
2339 | ||
2340 | return err; | |
2341 | } | |
2342 | ||
1da177e4 LT |
2343 | static int hci_dev_do_close(struct hci_dev *hdev) |
2344 | { | |
2345 | BT_DBG("%s %p", hdev->name, hdev); | |
2346 | ||
78c04c0b VCG |
2347 | cancel_delayed_work(&hdev->power_off); |
2348 | ||
1da177e4 LT |
2349 | hci_req_cancel(hdev, ENODEV); |
2350 | hci_req_lock(hdev); | |
2351 | ||
2352 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 2353 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
2354 | hci_req_unlock(hdev); |
2355 | return 0; | |
2356 | } | |
2357 | ||
3eff45ea GP |
2358 | /* Flush RX and TX works */ |
2359 | flush_work(&hdev->tx_work); | |
b78752cc | 2360 | flush_work(&hdev->rx_work); |
1da177e4 | 2361 | |
16ab91ab | 2362 | if (hdev->discov_timeout > 0) { |
e0f9309f | 2363 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 2364 | hdev->discov_timeout = 0; |
5e5282bb | 2365 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
310a3d48 | 2366 | clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
2367 | } |
2368 | ||
a8b2d5c2 | 2369 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
2370 | cancel_delayed_work(&hdev->service_cache); |
2371 | ||
7ba8b4be | 2372 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
4518bb0f JH |
2373 | |
2374 | if (test_bit(HCI_MGMT, &hdev->dev_flags)) | |
2375 | cancel_delayed_work_sync(&hdev->rpa_expired); | |
7ba8b4be | 2376 | |
09fd0de5 | 2377 | hci_dev_lock(hdev); |
1f9b9a5d | 2378 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 2379 | hci_conn_hash_flush(hdev); |
6046dc3e | 2380 | hci_pend_le_conns_clear(hdev); |
09fd0de5 | 2381 | hci_dev_unlock(hdev); |
1da177e4 LT |
2382 | |
2383 | hci_notify(hdev, HCI_DEV_DOWN); | |
2384 | ||
2385 | if (hdev->flush) | |
2386 | hdev->flush(hdev); | |
2387 | ||
2388 | /* Reset device */ | |
2389 | skb_queue_purge(&hdev->cmd_q); | |
2390 | atomic_set(&hdev->cmd_cnt, 1); | |
8af59467 | 2391 | if (!test_bit(HCI_RAW, &hdev->flags) && |
3a6afbd2 | 2392 | !test_bit(HCI_AUTO_OFF, &hdev->dev_flags) && |
a6c511c6 | 2393 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 2394 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 2395 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
2396 | clear_bit(HCI_INIT, &hdev->flags); |
2397 | } | |
2398 | ||
c347b765 GP |
2399 | /* flush cmd work */ |
2400 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
2401 | |
2402 | /* Drop queues */ | |
2403 | skb_queue_purge(&hdev->rx_q); | |
2404 | skb_queue_purge(&hdev->cmd_q); | |
2405 | skb_queue_purge(&hdev->raw_q); | |
2406 | ||
2407 | /* Drop last sent command */ | |
2408 | if (hdev->sent_cmd) { | |
b79f44c1 | 2409 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
2410 | kfree_skb(hdev->sent_cmd); |
2411 | hdev->sent_cmd = NULL; | |
2412 | } | |
2413 | ||
b6ddb638 JH |
2414 | kfree_skb(hdev->recv_evt); |
2415 | hdev->recv_evt = NULL; | |
2416 | ||
1da177e4 LT |
2417 | /* After this point our queues are empty |
2418 | * and no tasks are scheduled. */ | |
2419 | hdev->close(hdev); | |
2420 | ||
35b973c9 JH |
2421 | /* Clear flags */ |
2422 | hdev->flags = 0; | |
2423 | hdev->dev_flags &= ~HCI_PERSISTENT_MASK; | |
2424 | ||
93c311a0 MH |
2425 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { |
2426 | if (hdev->dev_type == HCI_BREDR) { | |
2427 | hci_dev_lock(hdev); | |
2428 | mgmt_powered(hdev, 0); | |
2429 | hci_dev_unlock(hdev); | |
2430 | } | |
8ee56540 | 2431 | } |
5add6af8 | 2432 | |
ced5c338 | 2433 | /* Controller radio is available but is currently powered down */ |
536619e8 | 2434 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 2435 | |
e59fda8d | 2436 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 2437 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 2438 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 2439 | |
1da177e4 LT |
2440 | hci_req_unlock(hdev); |
2441 | ||
2442 | hci_dev_put(hdev); | |
2443 | return 0; | |
2444 | } | |
2445 | ||
2446 | int hci_dev_close(__u16 dev) | |
2447 | { | |
2448 | struct hci_dev *hdev; | |
2449 | int err; | |
2450 | ||
70f23020 AE |
2451 | hdev = hci_dev_get(dev); |
2452 | if (!hdev) | |
1da177e4 | 2453 | return -ENODEV; |
8ee56540 | 2454 | |
0736cfa8 MH |
2455 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2456 | err = -EBUSY; | |
2457 | goto done; | |
2458 | } | |
2459 | ||
8ee56540 MH |
2460 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
2461 | cancel_delayed_work(&hdev->power_off); | |
2462 | ||
1da177e4 | 2463 | err = hci_dev_do_close(hdev); |
8ee56540 | 2464 | |
0736cfa8 | 2465 | done: |
1da177e4 LT |
2466 | hci_dev_put(hdev); |
2467 | return err; | |
2468 | } | |
2469 | ||
2470 | int hci_dev_reset(__u16 dev) | |
2471 | { | |
2472 | struct hci_dev *hdev; | |
2473 | int ret = 0; | |
2474 | ||
70f23020 AE |
2475 | hdev = hci_dev_get(dev); |
2476 | if (!hdev) | |
1da177e4 LT |
2477 | return -ENODEV; |
2478 | ||
2479 | hci_req_lock(hdev); | |
1da177e4 | 2480 | |
808a049e MH |
2481 | if (!test_bit(HCI_UP, &hdev->flags)) { |
2482 | ret = -ENETDOWN; | |
1da177e4 | 2483 | goto done; |
808a049e | 2484 | } |
1da177e4 | 2485 | |
0736cfa8 MH |
2486 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2487 | ret = -EBUSY; | |
2488 | goto done; | |
2489 | } | |
2490 | ||
1da177e4 LT |
2491 | /* Drop queues */ |
2492 | skb_queue_purge(&hdev->rx_q); | |
2493 | skb_queue_purge(&hdev->cmd_q); | |
2494 | ||
09fd0de5 | 2495 | hci_dev_lock(hdev); |
1f9b9a5d | 2496 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 2497 | hci_conn_hash_flush(hdev); |
09fd0de5 | 2498 | hci_dev_unlock(hdev); |
1da177e4 LT |
2499 | |
2500 | if (hdev->flush) | |
2501 | hdev->flush(hdev); | |
2502 | ||
8e87d142 | 2503 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 2504 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
2505 | |
2506 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
01178cd4 | 2507 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
2508 | |
2509 | done: | |
1da177e4 LT |
2510 | hci_req_unlock(hdev); |
2511 | hci_dev_put(hdev); | |
2512 | return ret; | |
2513 | } | |
2514 | ||
2515 | int hci_dev_reset_stat(__u16 dev) | |
2516 | { | |
2517 | struct hci_dev *hdev; | |
2518 | int ret = 0; | |
2519 | ||
70f23020 AE |
2520 | hdev = hci_dev_get(dev); |
2521 | if (!hdev) | |
1da177e4 LT |
2522 | return -ENODEV; |
2523 | ||
0736cfa8 MH |
2524 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2525 | ret = -EBUSY; | |
2526 | goto done; | |
2527 | } | |
2528 | ||
1da177e4 LT |
2529 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
2530 | ||
0736cfa8 | 2531 | done: |
1da177e4 | 2532 | hci_dev_put(hdev); |
1da177e4 LT |
2533 | return ret; |
2534 | } | |
2535 | ||
2536 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
2537 | { | |
2538 | struct hci_dev *hdev; | |
2539 | struct hci_dev_req dr; | |
2540 | int err = 0; | |
2541 | ||
2542 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
2543 | return -EFAULT; | |
2544 | ||
70f23020 AE |
2545 | hdev = hci_dev_get(dr.dev_id); |
2546 | if (!hdev) | |
1da177e4 LT |
2547 | return -ENODEV; |
2548 | ||
0736cfa8 MH |
2549 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2550 | err = -EBUSY; | |
2551 | goto done; | |
2552 | } | |
2553 | ||
5b69bef5 MH |
2554 | if (hdev->dev_type != HCI_BREDR) { |
2555 | err = -EOPNOTSUPP; | |
2556 | goto done; | |
2557 | } | |
2558 | ||
56f87901 JH |
2559 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
2560 | err = -EOPNOTSUPP; | |
2561 | goto done; | |
2562 | } | |
2563 | ||
1da177e4 LT |
2564 | switch (cmd) { |
2565 | case HCISETAUTH: | |
01178cd4 JH |
2566 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
2567 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2568 | break; |
2569 | ||
2570 | case HCISETENCRYPT: | |
2571 | if (!lmp_encrypt_capable(hdev)) { | |
2572 | err = -EOPNOTSUPP; | |
2573 | break; | |
2574 | } | |
2575 | ||
2576 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
2577 | /* Auth must be enabled first */ | |
01178cd4 JH |
2578 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
2579 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2580 | if (err) |
2581 | break; | |
2582 | } | |
2583 | ||
01178cd4 JH |
2584 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
2585 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2586 | break; |
2587 | ||
2588 | case HCISETSCAN: | |
01178cd4 JH |
2589 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
2590 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2591 | break; |
2592 | ||
1da177e4 | 2593 | case HCISETLINKPOL: |
01178cd4 JH |
2594 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
2595 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2596 | break; |
2597 | ||
2598 | case HCISETLINKMODE: | |
e4e8e37c MH |
2599 | hdev->link_mode = ((__u16) dr.dev_opt) & |
2600 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
2601 | break; | |
2602 | ||
2603 | case HCISETPTYPE: | |
2604 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
2605 | break; |
2606 | ||
2607 | case HCISETACLMTU: | |
e4e8e37c MH |
2608 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
2609 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
2610 | break; |
2611 | ||
2612 | case HCISETSCOMTU: | |
e4e8e37c MH |
2613 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
2614 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
2615 | break; |
2616 | ||
2617 | default: | |
2618 | err = -EINVAL; | |
2619 | break; | |
2620 | } | |
e4e8e37c | 2621 | |
0736cfa8 | 2622 | done: |
1da177e4 LT |
2623 | hci_dev_put(hdev); |
2624 | return err; | |
2625 | } | |
2626 | ||
2627 | int hci_get_dev_list(void __user *arg) | |
2628 | { | |
8035ded4 | 2629 | struct hci_dev *hdev; |
1da177e4 LT |
2630 | struct hci_dev_list_req *dl; |
2631 | struct hci_dev_req *dr; | |
1da177e4 LT |
2632 | int n = 0, size, err; |
2633 | __u16 dev_num; | |
2634 | ||
2635 | if (get_user(dev_num, (__u16 __user *) arg)) | |
2636 | return -EFAULT; | |
2637 | ||
2638 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
2639 | return -EINVAL; | |
2640 | ||
2641 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
2642 | ||
70f23020 AE |
2643 | dl = kzalloc(size, GFP_KERNEL); |
2644 | if (!dl) | |
1da177e4 LT |
2645 | return -ENOMEM; |
2646 | ||
2647 | dr = dl->dev_req; | |
2648 | ||
f20d09d5 | 2649 | read_lock(&hci_dev_list_lock); |
8035ded4 | 2650 | list_for_each_entry(hdev, &hci_dev_list, list) { |
a8b2d5c2 | 2651 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 2652 | cancel_delayed_work(&hdev->power_off); |
c542a06c | 2653 | |
a8b2d5c2 JH |
2654 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
2655 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 2656 | |
1da177e4 LT |
2657 | (dr + n)->dev_id = hdev->id; |
2658 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 2659 | |
1da177e4 LT |
2660 | if (++n >= dev_num) |
2661 | break; | |
2662 | } | |
f20d09d5 | 2663 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2664 | |
2665 | dl->dev_num = n; | |
2666 | size = sizeof(*dl) + n * sizeof(*dr); | |
2667 | ||
2668 | err = copy_to_user(arg, dl, size); | |
2669 | kfree(dl); | |
2670 | ||
2671 | return err ? -EFAULT : 0; | |
2672 | } | |
2673 | ||
2674 | int hci_get_dev_info(void __user *arg) | |
2675 | { | |
2676 | struct hci_dev *hdev; | |
2677 | struct hci_dev_info di; | |
2678 | int err = 0; | |
2679 | ||
2680 | if (copy_from_user(&di, arg, sizeof(di))) | |
2681 | return -EFAULT; | |
2682 | ||
70f23020 AE |
2683 | hdev = hci_dev_get(di.dev_id); |
2684 | if (!hdev) | |
1da177e4 LT |
2685 | return -ENODEV; |
2686 | ||
a8b2d5c2 | 2687 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
3243553f | 2688 | cancel_delayed_work_sync(&hdev->power_off); |
ab81cbf9 | 2689 | |
a8b2d5c2 JH |
2690 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
2691 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 2692 | |
1da177e4 LT |
2693 | strcpy(di.name, hdev->name); |
2694 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 2695 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
1da177e4 LT |
2696 | di.flags = hdev->flags; |
2697 | di.pkt_type = hdev->pkt_type; | |
572c7f84 JH |
2698 | if (lmp_bredr_capable(hdev)) { |
2699 | di.acl_mtu = hdev->acl_mtu; | |
2700 | di.acl_pkts = hdev->acl_pkts; | |
2701 | di.sco_mtu = hdev->sco_mtu; | |
2702 | di.sco_pkts = hdev->sco_pkts; | |
2703 | } else { | |
2704 | di.acl_mtu = hdev->le_mtu; | |
2705 | di.acl_pkts = hdev->le_pkts; | |
2706 | di.sco_mtu = 0; | |
2707 | di.sco_pkts = 0; | |
2708 | } | |
1da177e4 LT |
2709 | di.link_policy = hdev->link_policy; |
2710 | di.link_mode = hdev->link_mode; | |
2711 | ||
2712 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
2713 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
2714 | ||
2715 | if (copy_to_user(arg, &di, sizeof(di))) | |
2716 | err = -EFAULT; | |
2717 | ||
2718 | hci_dev_put(hdev); | |
2719 | ||
2720 | return err; | |
2721 | } | |
2722 | ||
2723 | /* ---- Interface to HCI drivers ---- */ | |
2724 | ||
611b30f7 MH |
2725 | static int hci_rfkill_set_block(void *data, bool blocked) |
2726 | { | |
2727 | struct hci_dev *hdev = data; | |
2728 | ||
2729 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
2730 | ||
0736cfa8 MH |
2731 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
2732 | return -EBUSY; | |
2733 | ||
5e130367 JH |
2734 | if (blocked) { |
2735 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
bf543036 JH |
2736 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) |
2737 | hci_dev_do_close(hdev); | |
5e130367 JH |
2738 | } else { |
2739 | clear_bit(HCI_RFKILLED, &hdev->dev_flags); | |
1025c04c | 2740 | } |
611b30f7 MH |
2741 | |
2742 | return 0; | |
2743 | } | |
2744 | ||
2745 | static const struct rfkill_ops hci_rfkill_ops = { | |
2746 | .set_block = hci_rfkill_set_block, | |
2747 | }; | |
2748 | ||
ab81cbf9 JH |
2749 | static void hci_power_on(struct work_struct *work) |
2750 | { | |
2751 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2752 | int err; |
ab81cbf9 JH |
2753 | |
2754 | BT_DBG("%s", hdev->name); | |
2755 | ||
cbed0ca1 | 2756 | err = hci_dev_do_open(hdev); |
96570ffc JH |
2757 | if (err < 0) { |
2758 | mgmt_set_powered_failed(hdev, err); | |
ab81cbf9 | 2759 | return; |
96570ffc | 2760 | } |
ab81cbf9 | 2761 | |
a5c8f270 MH |
2762 | /* During the HCI setup phase, a few error conditions are |
2763 | * ignored and they need to be checked now. If they are still | |
2764 | * valid, it is important to turn the device back off. | |
2765 | */ | |
2766 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags) || | |
2767 | (hdev->dev_type == HCI_BREDR && | |
2768 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
2769 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
bf543036 JH |
2770 | clear_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
2771 | hci_dev_do_close(hdev); | |
2772 | } else if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { | |
19202573 JH |
2773 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2774 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2775 | } |
ab81cbf9 | 2776 | |
a8b2d5c2 | 2777 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
744cf19e | 2778 | mgmt_index_added(hdev); |
ab81cbf9 JH |
2779 | } |
2780 | ||
2781 | static void hci_power_off(struct work_struct *work) | |
2782 | { | |
3243553f | 2783 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 2784 | power_off.work); |
ab81cbf9 JH |
2785 | |
2786 | BT_DBG("%s", hdev->name); | |
2787 | ||
8ee56540 | 2788 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
2789 | } |
2790 | ||
16ab91ab JH |
2791 | static void hci_discov_off(struct work_struct *work) |
2792 | { | |
2793 | struct hci_dev *hdev; | |
16ab91ab JH |
2794 | |
2795 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
2796 | ||
2797 | BT_DBG("%s", hdev->name); | |
2798 | ||
d1967ff8 | 2799 | mgmt_discoverable_timeout(hdev); |
16ab91ab JH |
2800 | } |
2801 | ||
35f7498a | 2802 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 2803 | { |
4821002c | 2804 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 2805 | |
4821002c JH |
2806 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
2807 | list_del(&uuid->list); | |
2aeb9a1a JH |
2808 | kfree(uuid); |
2809 | } | |
2aeb9a1a JH |
2810 | } |
2811 | ||
35f7498a | 2812 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 JH |
2813 | { |
2814 | struct list_head *p, *n; | |
2815 | ||
2816 | list_for_each_safe(p, n, &hdev->link_keys) { | |
2817 | struct link_key *key; | |
2818 | ||
2819 | key = list_entry(p, struct link_key, list); | |
2820 | ||
2821 | list_del(p); | |
2822 | kfree(key); | |
2823 | } | |
55ed8ca1 JH |
2824 | } |
2825 | ||
35f7498a | 2826 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf VCG |
2827 | { |
2828 | struct smp_ltk *k, *tmp; | |
2829 | ||
2830 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
2831 | list_del(&k->list); | |
2832 | kfree(k); | |
2833 | } | |
b899efaf VCG |
2834 | } |
2835 | ||
970c4e46 JH |
2836 | void hci_smp_irks_clear(struct hci_dev *hdev) |
2837 | { | |
2838 | struct smp_irk *k, *tmp; | |
2839 | ||
2840 | list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) { | |
2841 | list_del(&k->list); | |
2842 | kfree(k); | |
2843 | } | |
2844 | } | |
2845 | ||
55ed8ca1 JH |
2846 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2847 | { | |
8035ded4 | 2848 | struct link_key *k; |
55ed8ca1 | 2849 | |
8035ded4 | 2850 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
2851 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
2852 | return k; | |
55ed8ca1 JH |
2853 | |
2854 | return NULL; | |
2855 | } | |
2856 | ||
745c0ce3 | 2857 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 2858 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
2859 | { |
2860 | /* Legacy key */ | |
2861 | if (key_type < 0x03) | |
745c0ce3 | 2862 | return true; |
d25e28ab JH |
2863 | |
2864 | /* Debug keys are insecure so don't store them persistently */ | |
2865 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 2866 | return false; |
d25e28ab JH |
2867 | |
2868 | /* Changed combination key and there's no previous one */ | |
2869 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 2870 | return false; |
d25e28ab JH |
2871 | |
2872 | /* Security mode 3 case */ | |
2873 | if (!conn) | |
745c0ce3 | 2874 | return true; |
d25e28ab JH |
2875 | |
2876 | /* Neither local nor remote side had no-bonding as requirement */ | |
2877 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 2878 | return true; |
d25e28ab JH |
2879 | |
2880 | /* Local side had dedicated bonding as requirement */ | |
2881 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 2882 | return true; |
d25e28ab JH |
2883 | |
2884 | /* Remote side had dedicated bonding as requirement */ | |
2885 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 2886 | return true; |
d25e28ab JH |
2887 | |
2888 | /* If none of the above criteria match, then don't store the key | |
2889 | * persistently */ | |
745c0ce3 | 2890 | return false; |
d25e28ab JH |
2891 | } |
2892 | ||
98a0b845 JH |
2893 | static bool ltk_type_master(u8 type) |
2894 | { | |
2895 | if (type == HCI_SMP_STK || type == HCI_SMP_LTK) | |
2896 | return true; | |
2897 | ||
2898 | return false; | |
2899 | } | |
2900 | ||
2901 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8], | |
2902 | bool master) | |
75d262c2 | 2903 | { |
c9839a11 | 2904 | struct smp_ltk *k; |
75d262c2 | 2905 | |
c9839a11 VCG |
2906 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
2907 | if (k->ediv != ediv || | |
a8c5fb1a | 2908 | memcmp(rand, k->rand, sizeof(k->rand))) |
75d262c2 VCG |
2909 | continue; |
2910 | ||
98a0b845 JH |
2911 | if (ltk_type_master(k->type) != master) |
2912 | continue; | |
2913 | ||
c9839a11 | 2914 | return k; |
75d262c2 VCG |
2915 | } |
2916 | ||
2917 | return NULL; | |
2918 | } | |
75d262c2 | 2919 | |
c9839a11 | 2920 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
98a0b845 | 2921 | u8 addr_type, bool master) |
75d262c2 | 2922 | { |
c9839a11 | 2923 | struct smp_ltk *k; |
75d262c2 | 2924 | |
c9839a11 VCG |
2925 | list_for_each_entry(k, &hdev->long_term_keys, list) |
2926 | if (addr_type == k->bdaddr_type && | |
98a0b845 JH |
2927 | bacmp(bdaddr, &k->bdaddr) == 0 && |
2928 | ltk_type_master(k->type) == master) | |
75d262c2 VCG |
2929 | return k; |
2930 | ||
2931 | return NULL; | |
2932 | } | |
75d262c2 | 2933 | |
970c4e46 JH |
2934 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
2935 | { | |
2936 | struct smp_irk *irk; | |
2937 | ||
2938 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { | |
2939 | if (!bacmp(&irk->rpa, rpa)) | |
2940 | return irk; | |
2941 | } | |
2942 | ||
2943 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { | |
2944 | if (smp_irk_matches(hdev->tfm_aes, irk->val, rpa)) { | |
2945 | bacpy(&irk->rpa, rpa); | |
2946 | return irk; | |
2947 | } | |
2948 | } | |
2949 | ||
2950 | return NULL; | |
2951 | } | |
2952 | ||
2953 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2954 | u8 addr_type) | |
2955 | { | |
2956 | struct smp_irk *irk; | |
2957 | ||
6cfc9988 JH |
2958 | /* Identity Address must be public or static random */ |
2959 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
2960 | return NULL; | |
2961 | ||
970c4e46 JH |
2962 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { |
2963 | if (addr_type == irk->addr_type && | |
2964 | bacmp(bdaddr, &irk->bdaddr) == 0) | |
2965 | return irk; | |
2966 | } | |
2967 | ||
2968 | return NULL; | |
2969 | } | |
2970 | ||
d25e28ab | 2971 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
04124681 | 2972 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
55ed8ca1 JH |
2973 | { |
2974 | struct link_key *key, *old_key; | |
745c0ce3 VA |
2975 | u8 old_key_type; |
2976 | bool persistent; | |
55ed8ca1 JH |
2977 | |
2978 | old_key = hci_find_link_key(hdev, bdaddr); | |
2979 | if (old_key) { | |
2980 | old_key_type = old_key->type; | |
2981 | key = old_key; | |
2982 | } else { | |
12adcf3a | 2983 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 2984 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 JH |
2985 | if (!key) |
2986 | return -ENOMEM; | |
2987 | list_add(&key->list, &hdev->link_keys); | |
2988 | } | |
2989 | ||
6ed93dc6 | 2990 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 2991 | |
d25e28ab JH |
2992 | /* Some buggy controller combinations generate a changed |
2993 | * combination key for legacy pairing even when there's no | |
2994 | * previous key */ | |
2995 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 2996 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 2997 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
2998 | if (conn) |
2999 | conn->key_type = type; | |
3000 | } | |
d25e28ab | 3001 | |
55ed8ca1 | 3002 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 3003 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
3004 | key->pin_len = pin_len; |
3005 | ||
b6020ba0 | 3006 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 3007 | key->type = old_key_type; |
4748fed2 JH |
3008 | else |
3009 | key->type = type; | |
3010 | ||
4df378a1 JH |
3011 | if (!new_key) |
3012 | return 0; | |
3013 | ||
3014 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
3015 | ||
744cf19e | 3016 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 | 3017 | |
6ec5bcad VA |
3018 | if (conn) |
3019 | conn->flush_key = !persistent; | |
55ed8ca1 JH |
3020 | |
3021 | return 0; | |
3022 | } | |
3023 | ||
ca9142b8 | 3024 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 JH |
3025 | u8 addr_type, u8 type, u8 authenticated, |
3026 | u8 tk[16], u8 enc_size, __le16 ediv, u8 rand[8]) | |
75d262c2 | 3027 | { |
c9839a11 | 3028 | struct smp_ltk *key, *old_key; |
98a0b845 | 3029 | bool master = ltk_type_master(type); |
75d262c2 | 3030 | |
98a0b845 | 3031 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type, master); |
c9839a11 | 3032 | if (old_key) |
75d262c2 | 3033 | key = old_key; |
c9839a11 | 3034 | else { |
0a14ab41 | 3035 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 3036 | if (!key) |
ca9142b8 | 3037 | return NULL; |
c9839a11 | 3038 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
3039 | } |
3040 | ||
75d262c2 | 3041 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
3042 | key->bdaddr_type = addr_type; |
3043 | memcpy(key->val, tk, sizeof(key->val)); | |
3044 | key->authenticated = authenticated; | |
3045 | key->ediv = ediv; | |
3046 | key->enc_size = enc_size; | |
3047 | key->type = type; | |
3048 | memcpy(key->rand, rand, sizeof(key->rand)); | |
75d262c2 | 3049 | |
ca9142b8 | 3050 | return key; |
75d262c2 VCG |
3051 | } |
3052 | ||
ca9142b8 JH |
3053 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
3054 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
3055 | { |
3056 | struct smp_irk *irk; | |
3057 | ||
3058 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
3059 | if (!irk) { | |
3060 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
3061 | if (!irk) | |
ca9142b8 | 3062 | return NULL; |
970c4e46 JH |
3063 | |
3064 | bacpy(&irk->bdaddr, bdaddr); | |
3065 | irk->addr_type = addr_type; | |
3066 | ||
3067 | list_add(&irk->list, &hdev->identity_resolving_keys); | |
3068 | } | |
3069 | ||
3070 | memcpy(irk->val, val, 16); | |
3071 | bacpy(&irk->rpa, rpa); | |
3072 | ||
ca9142b8 | 3073 | return irk; |
970c4e46 JH |
3074 | } |
3075 | ||
55ed8ca1 JH |
3076 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
3077 | { | |
3078 | struct link_key *key; | |
3079 | ||
3080 | key = hci_find_link_key(hdev, bdaddr); | |
3081 | if (!key) | |
3082 | return -ENOENT; | |
3083 | ||
6ed93dc6 | 3084 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 JH |
3085 | |
3086 | list_del(&key->list); | |
3087 | kfree(key); | |
3088 | ||
3089 | return 0; | |
3090 | } | |
3091 | ||
e0b2b27e | 3092 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf VCG |
3093 | { |
3094 | struct smp_ltk *k, *tmp; | |
c51ffa0b | 3095 | int removed = 0; |
b899efaf VCG |
3096 | |
3097 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
e0b2b27e | 3098 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
3099 | continue; |
3100 | ||
6ed93dc6 | 3101 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf VCG |
3102 | |
3103 | list_del(&k->list); | |
3104 | kfree(k); | |
c51ffa0b | 3105 | removed++; |
b899efaf VCG |
3106 | } |
3107 | ||
c51ffa0b | 3108 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
3109 | } |
3110 | ||
a7ec7338 JH |
3111 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
3112 | { | |
3113 | struct smp_irk *k, *tmp; | |
3114 | ||
668b7b19 | 3115 | list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
3116 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
3117 | continue; | |
3118 | ||
3119 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
3120 | ||
3121 | list_del(&k->list); | |
3122 | kfree(k); | |
3123 | } | |
3124 | } | |
3125 | ||
6bd32326 | 3126 | /* HCI command timer function */ |
bda4f23a | 3127 | static void hci_cmd_timeout(unsigned long arg) |
6bd32326 VT |
3128 | { |
3129 | struct hci_dev *hdev = (void *) arg; | |
3130 | ||
bda4f23a AE |
3131 | if (hdev->sent_cmd) { |
3132 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
3133 | u16 opcode = __le16_to_cpu(sent->opcode); | |
3134 | ||
3135 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
3136 | } else { | |
3137 | BT_ERR("%s command tx timeout", hdev->name); | |
3138 | } | |
3139 | ||
6bd32326 | 3140 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 3141 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
3142 | } |
3143 | ||
2763eda6 | 3144 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 3145 | bdaddr_t *bdaddr) |
2763eda6 SJ |
3146 | { |
3147 | struct oob_data *data; | |
3148 | ||
3149 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
3150 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
3151 | return data; | |
3152 | ||
3153 | return NULL; | |
3154 | } | |
3155 | ||
3156 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
3157 | { | |
3158 | struct oob_data *data; | |
3159 | ||
3160 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
3161 | if (!data) | |
3162 | return -ENOENT; | |
3163 | ||
6ed93dc6 | 3164 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
3165 | |
3166 | list_del(&data->list); | |
3167 | kfree(data); | |
3168 | ||
3169 | return 0; | |
3170 | } | |
3171 | ||
35f7498a | 3172 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
3173 | { |
3174 | struct oob_data *data, *n; | |
3175 | ||
3176 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
3177 | list_del(&data->list); | |
3178 | kfree(data); | |
3179 | } | |
2763eda6 SJ |
3180 | } |
3181 | ||
0798872e MH |
3182 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
3183 | u8 *hash, u8 *randomizer) | |
2763eda6 SJ |
3184 | { |
3185 | struct oob_data *data; | |
3186 | ||
3187 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
2763eda6 | 3188 | if (!data) { |
0a14ab41 | 3189 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
3190 | if (!data) |
3191 | return -ENOMEM; | |
3192 | ||
3193 | bacpy(&data->bdaddr, bdaddr); | |
3194 | list_add(&data->list, &hdev->remote_oob_data); | |
3195 | } | |
3196 | ||
519ca9d0 MH |
3197 | memcpy(data->hash192, hash, sizeof(data->hash192)); |
3198 | memcpy(data->randomizer192, randomizer, sizeof(data->randomizer192)); | |
2763eda6 | 3199 | |
0798872e MH |
3200 | memset(data->hash256, 0, sizeof(data->hash256)); |
3201 | memset(data->randomizer256, 0, sizeof(data->randomizer256)); | |
3202 | ||
3203 | BT_DBG("%s for %pMR", hdev->name, bdaddr); | |
3204 | ||
3205 | return 0; | |
3206 | } | |
3207 | ||
3208 | int hci_add_remote_oob_ext_data(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3209 | u8 *hash192, u8 *randomizer192, | |
3210 | u8 *hash256, u8 *randomizer256) | |
3211 | { | |
3212 | struct oob_data *data; | |
3213 | ||
3214 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
3215 | if (!data) { | |
0a14ab41 | 3216 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
0798872e MH |
3217 | if (!data) |
3218 | return -ENOMEM; | |
3219 | ||
3220 | bacpy(&data->bdaddr, bdaddr); | |
3221 | list_add(&data->list, &hdev->remote_oob_data); | |
3222 | } | |
3223 | ||
3224 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
3225 | memcpy(data->randomizer192, randomizer192, sizeof(data->randomizer192)); | |
3226 | ||
3227 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
3228 | memcpy(data->randomizer256, randomizer256, sizeof(data->randomizer256)); | |
3229 | ||
6ed93dc6 | 3230 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
3231 | |
3232 | return 0; | |
3233 | } | |
3234 | ||
b9ee0a78 MH |
3235 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, |
3236 | bdaddr_t *bdaddr, u8 type) | |
b2a66aad | 3237 | { |
8035ded4 | 3238 | struct bdaddr_list *b; |
b2a66aad | 3239 | |
b9ee0a78 MH |
3240 | list_for_each_entry(b, &hdev->blacklist, list) { |
3241 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) | |
b2a66aad | 3242 | return b; |
b9ee0a78 | 3243 | } |
b2a66aad AJ |
3244 | |
3245 | return NULL; | |
3246 | } | |
3247 | ||
35f7498a | 3248 | void hci_blacklist_clear(struct hci_dev *hdev) |
b2a66aad AJ |
3249 | { |
3250 | struct list_head *p, *n; | |
3251 | ||
3252 | list_for_each_safe(p, n, &hdev->blacklist) { | |
b9ee0a78 | 3253 | struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list); |
b2a66aad AJ |
3254 | |
3255 | list_del(p); | |
3256 | kfree(b); | |
3257 | } | |
b2a66aad AJ |
3258 | } |
3259 | ||
88c1fe4b | 3260 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
3261 | { |
3262 | struct bdaddr_list *entry; | |
b2a66aad | 3263 | |
b9ee0a78 | 3264 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
3265 | return -EBADF; |
3266 | ||
b9ee0a78 | 3267 | if (hci_blacklist_lookup(hdev, bdaddr, type)) |
5e762444 | 3268 | return -EEXIST; |
b2a66aad AJ |
3269 | |
3270 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
3271 | if (!entry) |
3272 | return -ENOMEM; | |
b2a66aad AJ |
3273 | |
3274 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 3275 | entry->bdaddr_type = type; |
b2a66aad AJ |
3276 | |
3277 | list_add(&entry->list, &hdev->blacklist); | |
3278 | ||
88c1fe4b | 3279 | return mgmt_device_blocked(hdev, bdaddr, type); |
b2a66aad AJ |
3280 | } |
3281 | ||
88c1fe4b | 3282 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
3283 | { |
3284 | struct bdaddr_list *entry; | |
b2a66aad | 3285 | |
35f7498a JH |
3286 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
3287 | hci_blacklist_clear(hdev); | |
3288 | return 0; | |
3289 | } | |
b2a66aad | 3290 | |
b9ee0a78 | 3291 | entry = hci_blacklist_lookup(hdev, bdaddr, type); |
1ec918ce | 3292 | if (!entry) |
5e762444 | 3293 | return -ENOENT; |
b2a66aad AJ |
3294 | |
3295 | list_del(&entry->list); | |
3296 | kfree(entry); | |
3297 | ||
88c1fe4b | 3298 | return mgmt_device_unblocked(hdev, bdaddr, type); |
b2a66aad AJ |
3299 | } |
3300 | ||
15819a70 AG |
3301 | /* This function requires the caller holds hdev->lock */ |
3302 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
3303 | bdaddr_t *addr, u8 addr_type) | |
3304 | { | |
3305 | struct hci_conn_params *params; | |
3306 | ||
3307 | list_for_each_entry(params, &hdev->le_conn_params, list) { | |
3308 | if (bacmp(¶ms->addr, addr) == 0 && | |
3309 | params->addr_type == addr_type) { | |
3310 | return params; | |
3311 | } | |
3312 | } | |
3313 | ||
3314 | return NULL; | |
3315 | } | |
3316 | ||
cef952ce AG |
3317 | static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type) |
3318 | { | |
3319 | struct hci_conn *conn; | |
3320 | ||
3321 | conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr); | |
3322 | if (!conn) | |
3323 | return false; | |
3324 | ||
3325 | if (conn->dst_type != type) | |
3326 | return false; | |
3327 | ||
3328 | if (conn->state != BT_CONNECTED) | |
3329 | return false; | |
3330 | ||
3331 | return true; | |
3332 | } | |
3333 | ||
a9b0a04c AG |
3334 | static bool is_identity_address(bdaddr_t *addr, u8 addr_type) |
3335 | { | |
3336 | if (addr_type == ADDR_LE_DEV_PUBLIC) | |
3337 | return true; | |
3338 | ||
3339 | /* Check for Random Static address type */ | |
3340 | if ((addr->b[5] & 0xc0) == 0xc0) | |
3341 | return true; | |
3342 | ||
3343 | return false; | |
3344 | } | |
3345 | ||
15819a70 | 3346 | /* This function requires the caller holds hdev->lock */ |
a9b0a04c AG |
3347 | int hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type, |
3348 | u8 auto_connect, u16 conn_min_interval, | |
3349 | u16 conn_max_interval) | |
15819a70 AG |
3350 | { |
3351 | struct hci_conn_params *params; | |
3352 | ||
a9b0a04c AG |
3353 | if (!is_identity_address(addr, addr_type)) |
3354 | return -EINVAL; | |
3355 | ||
15819a70 | 3356 | params = hci_conn_params_lookup(hdev, addr, addr_type); |
cef952ce AG |
3357 | if (params) |
3358 | goto update; | |
15819a70 AG |
3359 | |
3360 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
3361 | if (!params) { | |
3362 | BT_ERR("Out of memory"); | |
a9b0a04c | 3363 | return -ENOMEM; |
15819a70 AG |
3364 | } |
3365 | ||
3366 | bacpy(¶ms->addr, addr); | |
3367 | params->addr_type = addr_type; | |
cef952ce AG |
3368 | |
3369 | list_add(¶ms->list, &hdev->le_conn_params); | |
3370 | ||
3371 | update: | |
15819a70 AG |
3372 | params->conn_min_interval = conn_min_interval; |
3373 | params->conn_max_interval = conn_max_interval; | |
9fcb18ef | 3374 | params->auto_connect = auto_connect; |
15819a70 | 3375 | |
cef952ce AG |
3376 | switch (auto_connect) { |
3377 | case HCI_AUTO_CONN_DISABLED: | |
3378 | case HCI_AUTO_CONN_LINK_LOSS: | |
3379 | hci_pend_le_conn_del(hdev, addr, addr_type); | |
3380 | break; | |
3381 | case HCI_AUTO_CONN_ALWAYS: | |
3382 | if (!is_connected(hdev, addr, addr_type)) | |
3383 | hci_pend_le_conn_add(hdev, addr, addr_type); | |
3384 | break; | |
3385 | } | |
15819a70 | 3386 | |
9fcb18ef AG |
3387 | BT_DBG("addr %pMR (type %u) auto_connect %u conn_min_interval 0x%.4x " |
3388 | "conn_max_interval 0x%.4x", addr, addr_type, auto_connect, | |
3389 | conn_min_interval, conn_max_interval); | |
a9b0a04c AG |
3390 | |
3391 | return 0; | |
15819a70 AG |
3392 | } |
3393 | ||
3394 | /* This function requires the caller holds hdev->lock */ | |
3395 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
3396 | { | |
3397 | struct hci_conn_params *params; | |
3398 | ||
3399 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
3400 | if (!params) | |
3401 | return; | |
3402 | ||
cef952ce AG |
3403 | hci_pend_le_conn_del(hdev, addr, addr_type); |
3404 | ||
15819a70 AG |
3405 | list_del(¶ms->list); |
3406 | kfree(params); | |
3407 | ||
3408 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
3409 | } | |
3410 | ||
3411 | /* This function requires the caller holds hdev->lock */ | |
3412 | void hci_conn_params_clear(struct hci_dev *hdev) | |
3413 | { | |
3414 | struct hci_conn_params *params, *tmp; | |
3415 | ||
3416 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
3417 | list_del(¶ms->list); | |
3418 | kfree(params); | |
3419 | } | |
3420 | ||
3421 | BT_DBG("All LE connection parameters were removed"); | |
3422 | } | |
3423 | ||
77a77a30 AG |
3424 | /* This function requires the caller holds hdev->lock */ |
3425 | struct bdaddr_list *hci_pend_le_conn_lookup(struct hci_dev *hdev, | |
3426 | bdaddr_t *addr, u8 addr_type) | |
3427 | { | |
3428 | struct bdaddr_list *entry; | |
3429 | ||
3430 | list_for_each_entry(entry, &hdev->pend_le_conns, list) { | |
3431 | if (bacmp(&entry->bdaddr, addr) == 0 && | |
3432 | entry->bdaddr_type == addr_type) | |
3433 | return entry; | |
3434 | } | |
3435 | ||
3436 | return NULL; | |
3437 | } | |
3438 | ||
3439 | /* This function requires the caller holds hdev->lock */ | |
3440 | void hci_pend_le_conn_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
3441 | { | |
3442 | struct bdaddr_list *entry; | |
3443 | ||
3444 | entry = hci_pend_le_conn_lookup(hdev, addr, addr_type); | |
3445 | if (entry) | |
a4790dbd | 3446 | goto done; |
77a77a30 AG |
3447 | |
3448 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); | |
3449 | if (!entry) { | |
3450 | BT_ERR("Out of memory"); | |
3451 | return; | |
3452 | } | |
3453 | ||
3454 | bacpy(&entry->bdaddr, addr); | |
3455 | entry->bdaddr_type = addr_type; | |
3456 | ||
3457 | list_add(&entry->list, &hdev->pend_le_conns); | |
3458 | ||
3459 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
a4790dbd AG |
3460 | |
3461 | done: | |
3462 | hci_update_background_scan(hdev); | |
77a77a30 AG |
3463 | } |
3464 | ||
3465 | /* This function requires the caller holds hdev->lock */ | |
3466 | void hci_pend_le_conn_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
3467 | { | |
3468 | struct bdaddr_list *entry; | |
3469 | ||
3470 | entry = hci_pend_le_conn_lookup(hdev, addr, addr_type); | |
3471 | if (!entry) | |
a4790dbd | 3472 | goto done; |
77a77a30 AG |
3473 | |
3474 | list_del(&entry->list); | |
3475 | kfree(entry); | |
3476 | ||
3477 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
a4790dbd AG |
3478 | |
3479 | done: | |
3480 | hci_update_background_scan(hdev); | |
77a77a30 AG |
3481 | } |
3482 | ||
3483 | /* This function requires the caller holds hdev->lock */ | |
3484 | void hci_pend_le_conns_clear(struct hci_dev *hdev) | |
3485 | { | |
3486 | struct bdaddr_list *entry, *tmp; | |
3487 | ||
3488 | list_for_each_entry_safe(entry, tmp, &hdev->pend_le_conns, list) { | |
3489 | list_del(&entry->list); | |
3490 | kfree(entry); | |
3491 | } | |
3492 | ||
3493 | BT_DBG("All LE pending connections cleared"); | |
3494 | } | |
3495 | ||
4c87eaab | 3496 | static void inquiry_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 3497 | { |
4c87eaab AG |
3498 | if (status) { |
3499 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 3500 | |
4c87eaab AG |
3501 | hci_dev_lock(hdev); |
3502 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3503 | hci_dev_unlock(hdev); | |
3504 | return; | |
3505 | } | |
7ba8b4be AG |
3506 | } |
3507 | ||
4c87eaab | 3508 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 3509 | { |
4c87eaab AG |
3510 | /* General inquiry access code (GIAC) */ |
3511 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
3512 | struct hci_request req; | |
3513 | struct hci_cp_inquiry cp; | |
7ba8b4be AG |
3514 | int err; |
3515 | ||
4c87eaab AG |
3516 | if (status) { |
3517 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
3518 | return; | |
3519 | } | |
7ba8b4be | 3520 | |
4c87eaab AG |
3521 | switch (hdev->discovery.type) { |
3522 | case DISCOV_TYPE_LE: | |
3523 | hci_dev_lock(hdev); | |
3524 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3525 | hci_dev_unlock(hdev); | |
3526 | break; | |
7ba8b4be | 3527 | |
4c87eaab AG |
3528 | case DISCOV_TYPE_INTERLEAVED: |
3529 | hci_req_init(&req, hdev); | |
7ba8b4be | 3530 | |
4c87eaab AG |
3531 | memset(&cp, 0, sizeof(cp)); |
3532 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
3533 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
3534 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
7ba8b4be | 3535 | |
4c87eaab | 3536 | hci_dev_lock(hdev); |
7dbfac1d | 3537 | |
4c87eaab | 3538 | hci_inquiry_cache_flush(hdev); |
7dbfac1d | 3539 | |
4c87eaab AG |
3540 | err = hci_req_run(&req, inquiry_complete); |
3541 | if (err) { | |
3542 | BT_ERR("Inquiry request failed: err %d", err); | |
3543 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3544 | } | |
7dbfac1d | 3545 | |
4c87eaab AG |
3546 | hci_dev_unlock(hdev); |
3547 | break; | |
7dbfac1d | 3548 | } |
7dbfac1d AG |
3549 | } |
3550 | ||
7ba8b4be AG |
3551 | static void le_scan_disable_work(struct work_struct *work) |
3552 | { | |
3553 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 3554 | le_scan_disable.work); |
4c87eaab AG |
3555 | struct hci_request req; |
3556 | int err; | |
7ba8b4be AG |
3557 | |
3558 | BT_DBG("%s", hdev->name); | |
3559 | ||
4c87eaab | 3560 | hci_req_init(&req, hdev); |
28b75a89 | 3561 | |
b1efcc28 | 3562 | hci_req_add_le_scan_disable(&req); |
28b75a89 | 3563 | |
4c87eaab AG |
3564 | err = hci_req_run(&req, le_scan_disable_work_complete); |
3565 | if (err) | |
3566 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
3567 | } |
3568 | ||
94b1fc92 MH |
3569 | int hci_update_random_address(struct hci_request *req, bool require_privacy, |
3570 | u8 *own_addr_type) | |
ebd3a747 JH |
3571 | { |
3572 | struct hci_dev *hdev = req->hdev; | |
3573 | int err; | |
3574 | ||
3575 | /* If privacy is enabled use a resolvable private address. If | |
2b5224dc MH |
3576 | * current RPA has expired or there is something else than |
3577 | * the current RPA in use, then generate a new one. | |
ebd3a747 JH |
3578 | */ |
3579 | if (test_bit(HCI_PRIVACY, &hdev->dev_flags)) { | |
ebd3a747 JH |
3580 | int to; |
3581 | ||
3582 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
3583 | ||
3584 | if (!test_and_clear_bit(HCI_RPA_EXPIRED, &hdev->dev_flags) && | |
2b5224dc | 3585 | !bacmp(&hdev->random_addr, &hdev->rpa)) |
ebd3a747 JH |
3586 | return 0; |
3587 | ||
2b5224dc | 3588 | err = smp_generate_rpa(hdev->tfm_aes, hdev->irk, &hdev->rpa); |
ebd3a747 JH |
3589 | if (err < 0) { |
3590 | BT_ERR("%s failed to generate new RPA", hdev->name); | |
3591 | return err; | |
3592 | } | |
3593 | ||
2b5224dc | 3594 | hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, &hdev->rpa); |
ebd3a747 JH |
3595 | |
3596 | to = msecs_to_jiffies(hdev->rpa_timeout * 1000); | |
3597 | queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, to); | |
3598 | ||
3599 | return 0; | |
94b1fc92 MH |
3600 | } |
3601 | ||
3602 | /* In case of required privacy without resolvable private address, | |
3603 | * use an unresolvable private address. This is useful for active | |
3604 | * scanning and non-connectable advertising. | |
3605 | */ | |
3606 | if (require_privacy) { | |
3607 | bdaddr_t urpa; | |
3608 | ||
3609 | get_random_bytes(&urpa, 6); | |
3610 | urpa.b[5] &= 0x3f; /* Clear two most significant bits */ | |
3611 | ||
3612 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
3613 | hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, &urpa); | |
3614 | return 0; | |
ebd3a747 JH |
3615 | } |
3616 | ||
3617 | /* If forcing static address is in use or there is no public | |
3618 | * address use the static address as random address (but skip | |
3619 | * the HCI command if the current random address is already the | |
3620 | * static one. | |
3621 | */ | |
3622 | if (test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags) || | |
3623 | !bacmp(&hdev->bdaddr, BDADDR_ANY)) { | |
3624 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
3625 | if (bacmp(&hdev->static_addr, &hdev->random_addr)) | |
3626 | hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, | |
3627 | &hdev->static_addr); | |
3628 | return 0; | |
3629 | } | |
3630 | ||
3631 | /* Neither privacy nor static address is being used so use a | |
3632 | * public address. | |
3633 | */ | |
3634 | *own_addr_type = ADDR_LE_DEV_PUBLIC; | |
3635 | ||
3636 | return 0; | |
3637 | } | |
3638 | ||
9be0dab7 DH |
3639 | /* Alloc HCI device */ |
3640 | struct hci_dev *hci_alloc_dev(void) | |
3641 | { | |
3642 | struct hci_dev *hdev; | |
3643 | ||
3644 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); | |
3645 | if (!hdev) | |
3646 | return NULL; | |
3647 | ||
b1b813d4 DH |
3648 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
3649 | hdev->esco_type = (ESCO_HV1); | |
3650 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
3651 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
3652 | hdev->io_capability = 0x03; /* No Input No Output */ | |
bbaf444a JH |
3653 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
3654 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 3655 | |
b1b813d4 DH |
3656 | hdev->sniff_max_interval = 800; |
3657 | hdev->sniff_min_interval = 80; | |
3658 | ||
3f959d46 | 3659 | hdev->le_adv_channel_map = 0x07; |
bef64738 MH |
3660 | hdev->le_scan_interval = 0x0060; |
3661 | hdev->le_scan_window = 0x0030; | |
4e70c7e7 MH |
3662 | hdev->le_conn_min_interval = 0x0028; |
3663 | hdev->le_conn_max_interval = 0x0038; | |
bef64738 | 3664 | |
d6bfd59c JH |
3665 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
3666 | ||
b1b813d4 DH |
3667 | mutex_init(&hdev->lock); |
3668 | mutex_init(&hdev->req_lock); | |
3669 | ||
3670 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
3671 | INIT_LIST_HEAD(&hdev->blacklist); | |
3672 | INIT_LIST_HEAD(&hdev->uuids); | |
3673 | INIT_LIST_HEAD(&hdev->link_keys); | |
3674 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 3675 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 3676 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
15819a70 | 3677 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 3678 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
6b536b5e | 3679 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
3680 | |
3681 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
3682 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
3683 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
3684 | INIT_WORK(&hdev->power_on, hci_power_on); | |
b1b813d4 | 3685 | |
b1b813d4 DH |
3686 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
3687 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
3688 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
3689 | ||
b1b813d4 DH |
3690 | skb_queue_head_init(&hdev->rx_q); |
3691 | skb_queue_head_init(&hdev->cmd_q); | |
3692 | skb_queue_head_init(&hdev->raw_q); | |
3693 | ||
3694 | init_waitqueue_head(&hdev->req_wait_q); | |
3695 | ||
bda4f23a | 3696 | setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev); |
b1b813d4 | 3697 | |
b1b813d4 DH |
3698 | hci_init_sysfs(hdev); |
3699 | discovery_init(hdev); | |
9be0dab7 DH |
3700 | |
3701 | return hdev; | |
3702 | } | |
3703 | EXPORT_SYMBOL(hci_alloc_dev); | |
3704 | ||
3705 | /* Free HCI device */ | |
3706 | void hci_free_dev(struct hci_dev *hdev) | |
3707 | { | |
9be0dab7 DH |
3708 | /* will free via device release */ |
3709 | put_device(&hdev->dev); | |
3710 | } | |
3711 | EXPORT_SYMBOL(hci_free_dev); | |
3712 | ||
1da177e4 LT |
3713 | /* Register HCI device */ |
3714 | int hci_register_dev(struct hci_dev *hdev) | |
3715 | { | |
b1b813d4 | 3716 | int id, error; |
1da177e4 | 3717 | |
010666a1 | 3718 | if (!hdev->open || !hdev->close) |
1da177e4 LT |
3719 | return -EINVAL; |
3720 | ||
08add513 MM |
3721 | /* Do not allow HCI_AMP devices to register at index 0, |
3722 | * so the index can be used as the AMP controller ID. | |
3723 | */ | |
3df92b31 SL |
3724 | switch (hdev->dev_type) { |
3725 | case HCI_BREDR: | |
3726 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
3727 | break; | |
3728 | case HCI_AMP: | |
3729 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3730 | break; | |
3731 | default: | |
3732 | return -EINVAL; | |
1da177e4 | 3733 | } |
8e87d142 | 3734 | |
3df92b31 SL |
3735 | if (id < 0) |
3736 | return id; | |
3737 | ||
1da177e4 LT |
3738 | sprintf(hdev->name, "hci%d", id); |
3739 | hdev->id = id; | |
2d8b3a11 AE |
3740 | |
3741 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
3742 | ||
d8537548 KC |
3743 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3744 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
3745 | if (!hdev->workqueue) { |
3746 | error = -ENOMEM; | |
3747 | goto err; | |
3748 | } | |
f48fd9c8 | 3749 | |
d8537548 KC |
3750 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3751 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
3752 | if (!hdev->req_workqueue) { |
3753 | destroy_workqueue(hdev->workqueue); | |
3754 | error = -ENOMEM; | |
3755 | goto err; | |
3756 | } | |
3757 | ||
0153e2ec MH |
3758 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
3759 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
3760 | ||
bdc3e0f1 MH |
3761 | dev_set_name(&hdev->dev, "%s", hdev->name); |
3762 | ||
99780a7b JH |
3763 | hdev->tfm_aes = crypto_alloc_blkcipher("ecb(aes)", 0, |
3764 | CRYPTO_ALG_ASYNC); | |
3765 | if (IS_ERR(hdev->tfm_aes)) { | |
3766 | BT_ERR("Unable to create crypto context"); | |
3767 | error = PTR_ERR(hdev->tfm_aes); | |
3768 | hdev->tfm_aes = NULL; | |
3769 | goto err_wqueue; | |
3770 | } | |
3771 | ||
bdc3e0f1 | 3772 | error = device_add(&hdev->dev); |
33ca954d | 3773 | if (error < 0) |
99780a7b | 3774 | goto err_tfm; |
1da177e4 | 3775 | |
611b30f7 | 3776 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
3777 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
3778 | hdev); | |
611b30f7 MH |
3779 | if (hdev->rfkill) { |
3780 | if (rfkill_register(hdev->rfkill) < 0) { | |
3781 | rfkill_destroy(hdev->rfkill); | |
3782 | hdev->rfkill = NULL; | |
3783 | } | |
3784 | } | |
3785 | ||
5e130367 JH |
3786 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
3787 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
3788 | ||
a8b2d5c2 | 3789 | set_bit(HCI_SETUP, &hdev->dev_flags); |
004b0258 | 3790 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
ce2be9ac | 3791 | |
01cd3404 | 3792 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
3793 | /* Assume BR/EDR support until proven otherwise (such as |
3794 | * through reading supported features during init. | |
3795 | */ | |
3796 | set_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
3797 | } | |
ce2be9ac | 3798 | |
fcee3377 GP |
3799 | write_lock(&hci_dev_list_lock); |
3800 | list_add(&hdev->list, &hci_dev_list); | |
3801 | write_unlock(&hci_dev_list_lock); | |
3802 | ||
1da177e4 | 3803 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 3804 | hci_dev_hold(hdev); |
1da177e4 | 3805 | |
19202573 | 3806 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 3807 | |
1da177e4 | 3808 | return id; |
f48fd9c8 | 3809 | |
99780a7b JH |
3810 | err_tfm: |
3811 | crypto_free_blkcipher(hdev->tfm_aes); | |
33ca954d DH |
3812 | err_wqueue: |
3813 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 3814 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 3815 | err: |
3df92b31 | 3816 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 3817 | |
33ca954d | 3818 | return error; |
1da177e4 LT |
3819 | } |
3820 | EXPORT_SYMBOL(hci_register_dev); | |
3821 | ||
3822 | /* Unregister HCI device */ | |
59735631 | 3823 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 3824 | { |
3df92b31 | 3825 | int i, id; |
ef222013 | 3826 | |
c13854ce | 3827 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 3828 | |
94324962 JH |
3829 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
3830 | ||
3df92b31 SL |
3831 | id = hdev->id; |
3832 | ||
f20d09d5 | 3833 | write_lock(&hci_dev_list_lock); |
1da177e4 | 3834 | list_del(&hdev->list); |
f20d09d5 | 3835 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
3836 | |
3837 | hci_dev_do_close(hdev); | |
3838 | ||
cd4c5391 | 3839 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
3840 | kfree_skb(hdev->reassembly[i]); |
3841 | ||
b9b5ef18 GP |
3842 | cancel_work_sync(&hdev->power_on); |
3843 | ||
ab81cbf9 | 3844 | if (!test_bit(HCI_INIT, &hdev->flags) && |
a8c5fb1a | 3845 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 3846 | hci_dev_lock(hdev); |
744cf19e | 3847 | mgmt_index_removed(hdev); |
09fd0de5 | 3848 | hci_dev_unlock(hdev); |
56e5cb86 | 3849 | } |
ab81cbf9 | 3850 | |
2e58ef3e JH |
3851 | /* mgmt_index_removed should take care of emptying the |
3852 | * pending list */ | |
3853 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
3854 | ||
1da177e4 LT |
3855 | hci_notify(hdev, HCI_DEV_UNREG); |
3856 | ||
611b30f7 MH |
3857 | if (hdev->rfkill) { |
3858 | rfkill_unregister(hdev->rfkill); | |
3859 | rfkill_destroy(hdev->rfkill); | |
3860 | } | |
3861 | ||
99780a7b JH |
3862 | if (hdev->tfm_aes) |
3863 | crypto_free_blkcipher(hdev->tfm_aes); | |
3864 | ||
bdc3e0f1 | 3865 | device_del(&hdev->dev); |
147e2d59 | 3866 | |
0153e2ec MH |
3867 | debugfs_remove_recursive(hdev->debugfs); |
3868 | ||
f48fd9c8 | 3869 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 3870 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 3871 | |
09fd0de5 | 3872 | hci_dev_lock(hdev); |
e2e0cacb | 3873 | hci_blacklist_clear(hdev); |
2aeb9a1a | 3874 | hci_uuids_clear(hdev); |
55ed8ca1 | 3875 | hci_link_keys_clear(hdev); |
b899efaf | 3876 | hci_smp_ltks_clear(hdev); |
970c4e46 | 3877 | hci_smp_irks_clear(hdev); |
2763eda6 | 3878 | hci_remote_oob_data_clear(hdev); |
15819a70 | 3879 | hci_conn_params_clear(hdev); |
77a77a30 | 3880 | hci_pend_le_conns_clear(hdev); |
09fd0de5 | 3881 | hci_dev_unlock(hdev); |
e2e0cacb | 3882 | |
dc946bd8 | 3883 | hci_dev_put(hdev); |
3df92b31 SL |
3884 | |
3885 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
3886 | } |
3887 | EXPORT_SYMBOL(hci_unregister_dev); | |
3888 | ||
3889 | /* Suspend HCI device */ | |
3890 | int hci_suspend_dev(struct hci_dev *hdev) | |
3891 | { | |
3892 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
3893 | return 0; | |
3894 | } | |
3895 | EXPORT_SYMBOL(hci_suspend_dev); | |
3896 | ||
3897 | /* Resume HCI device */ | |
3898 | int hci_resume_dev(struct hci_dev *hdev) | |
3899 | { | |
3900 | hci_notify(hdev, HCI_DEV_RESUME); | |
3901 | return 0; | |
3902 | } | |
3903 | EXPORT_SYMBOL(hci_resume_dev); | |
3904 | ||
76bca880 | 3905 | /* Receive frame from HCI drivers */ |
e1a26170 | 3906 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 3907 | { |
76bca880 | 3908 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 3909 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
3910 | kfree_skb(skb); |
3911 | return -ENXIO; | |
3912 | } | |
3913 | ||
d82603c6 | 3914 | /* Incoming skb */ |
76bca880 MH |
3915 | bt_cb(skb)->incoming = 1; |
3916 | ||
3917 | /* Time stamp */ | |
3918 | __net_timestamp(skb); | |
3919 | ||
76bca880 | 3920 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 3921 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 3922 | |
76bca880 MH |
3923 | return 0; |
3924 | } | |
3925 | EXPORT_SYMBOL(hci_recv_frame); | |
3926 | ||
33e882a5 | 3927 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 3928 | int count, __u8 index) |
33e882a5 SS |
3929 | { |
3930 | int len = 0; | |
3931 | int hlen = 0; | |
3932 | int remain = count; | |
3933 | struct sk_buff *skb; | |
3934 | struct bt_skb_cb *scb; | |
3935 | ||
3936 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 3937 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
3938 | return -EILSEQ; |
3939 | ||
3940 | skb = hdev->reassembly[index]; | |
3941 | ||
3942 | if (!skb) { | |
3943 | switch (type) { | |
3944 | case HCI_ACLDATA_PKT: | |
3945 | len = HCI_MAX_FRAME_SIZE; | |
3946 | hlen = HCI_ACL_HDR_SIZE; | |
3947 | break; | |
3948 | case HCI_EVENT_PKT: | |
3949 | len = HCI_MAX_EVENT_SIZE; | |
3950 | hlen = HCI_EVENT_HDR_SIZE; | |
3951 | break; | |
3952 | case HCI_SCODATA_PKT: | |
3953 | len = HCI_MAX_SCO_SIZE; | |
3954 | hlen = HCI_SCO_HDR_SIZE; | |
3955 | break; | |
3956 | } | |
3957 | ||
1e429f38 | 3958 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
3959 | if (!skb) |
3960 | return -ENOMEM; | |
3961 | ||
3962 | scb = (void *) skb->cb; | |
3963 | scb->expect = hlen; | |
3964 | scb->pkt_type = type; | |
3965 | ||
33e882a5 SS |
3966 | hdev->reassembly[index] = skb; |
3967 | } | |
3968 | ||
3969 | while (count) { | |
3970 | scb = (void *) skb->cb; | |
89bb46d0 | 3971 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
3972 | |
3973 | memcpy(skb_put(skb, len), data, len); | |
3974 | ||
3975 | count -= len; | |
3976 | data += len; | |
3977 | scb->expect -= len; | |
3978 | remain = count; | |
3979 | ||
3980 | switch (type) { | |
3981 | case HCI_EVENT_PKT: | |
3982 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
3983 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
3984 | scb->expect = h->plen; | |
3985 | ||
3986 | if (skb_tailroom(skb) < scb->expect) { | |
3987 | kfree_skb(skb); | |
3988 | hdev->reassembly[index] = NULL; | |
3989 | return -ENOMEM; | |
3990 | } | |
3991 | } | |
3992 | break; | |
3993 | ||
3994 | case HCI_ACLDATA_PKT: | |
3995 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
3996 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
3997 | scb->expect = __le16_to_cpu(h->dlen); | |
3998 | ||
3999 | if (skb_tailroom(skb) < scb->expect) { | |
4000 | kfree_skb(skb); | |
4001 | hdev->reassembly[index] = NULL; | |
4002 | return -ENOMEM; | |
4003 | } | |
4004 | } | |
4005 | break; | |
4006 | ||
4007 | case HCI_SCODATA_PKT: | |
4008 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
4009 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
4010 | scb->expect = h->dlen; | |
4011 | ||
4012 | if (skb_tailroom(skb) < scb->expect) { | |
4013 | kfree_skb(skb); | |
4014 | hdev->reassembly[index] = NULL; | |
4015 | return -ENOMEM; | |
4016 | } | |
4017 | } | |
4018 | break; | |
4019 | } | |
4020 | ||
4021 | if (scb->expect == 0) { | |
4022 | /* Complete frame */ | |
4023 | ||
4024 | bt_cb(skb)->pkt_type = type; | |
e1a26170 | 4025 | hci_recv_frame(hdev, skb); |
33e882a5 SS |
4026 | |
4027 | hdev->reassembly[index] = NULL; | |
4028 | return remain; | |
4029 | } | |
4030 | } | |
4031 | ||
4032 | return remain; | |
4033 | } | |
4034 | ||
ef222013 MH |
4035 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
4036 | { | |
f39a3c06 SS |
4037 | int rem = 0; |
4038 | ||
ef222013 MH |
4039 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
4040 | return -EILSEQ; | |
4041 | ||
da5f6c37 | 4042 | while (count) { |
1e429f38 | 4043 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
4044 | if (rem < 0) |
4045 | return rem; | |
ef222013 | 4046 | |
f39a3c06 SS |
4047 | data += (count - rem); |
4048 | count = rem; | |
f81c6224 | 4049 | } |
ef222013 | 4050 | |
f39a3c06 | 4051 | return rem; |
ef222013 MH |
4052 | } |
4053 | EXPORT_SYMBOL(hci_recv_fragment); | |
4054 | ||
99811510 SS |
4055 | #define STREAM_REASSEMBLY 0 |
4056 | ||
4057 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
4058 | { | |
4059 | int type; | |
4060 | int rem = 0; | |
4061 | ||
da5f6c37 | 4062 | while (count) { |
99811510 SS |
4063 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
4064 | ||
4065 | if (!skb) { | |
4066 | struct { char type; } *pkt; | |
4067 | ||
4068 | /* Start of the frame */ | |
4069 | pkt = data; | |
4070 | type = pkt->type; | |
4071 | ||
4072 | data++; | |
4073 | count--; | |
4074 | } else | |
4075 | type = bt_cb(skb)->pkt_type; | |
4076 | ||
1e429f38 | 4077 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 4078 | STREAM_REASSEMBLY); |
99811510 SS |
4079 | if (rem < 0) |
4080 | return rem; | |
4081 | ||
4082 | data += (count - rem); | |
4083 | count = rem; | |
f81c6224 | 4084 | } |
99811510 SS |
4085 | |
4086 | return rem; | |
4087 | } | |
4088 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
4089 | ||
1da177e4 LT |
4090 | /* ---- Interface to upper protocols ---- */ |
4091 | ||
1da177e4 LT |
4092 | int hci_register_cb(struct hci_cb *cb) |
4093 | { | |
4094 | BT_DBG("%p name %s", cb, cb->name); | |
4095 | ||
f20d09d5 | 4096 | write_lock(&hci_cb_list_lock); |
1da177e4 | 4097 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 4098 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
4099 | |
4100 | return 0; | |
4101 | } | |
4102 | EXPORT_SYMBOL(hci_register_cb); | |
4103 | ||
4104 | int hci_unregister_cb(struct hci_cb *cb) | |
4105 | { | |
4106 | BT_DBG("%p name %s", cb, cb->name); | |
4107 | ||
f20d09d5 | 4108 | write_lock(&hci_cb_list_lock); |
1da177e4 | 4109 | list_del(&cb->list); |
f20d09d5 | 4110 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
4111 | |
4112 | return 0; | |
4113 | } | |
4114 | EXPORT_SYMBOL(hci_unregister_cb); | |
4115 | ||
51086991 | 4116 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 4117 | { |
0d48d939 | 4118 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 4119 | |
cd82e61c MH |
4120 | /* Time stamp */ |
4121 | __net_timestamp(skb); | |
1da177e4 | 4122 | |
cd82e61c MH |
4123 | /* Send copy to monitor */ |
4124 | hci_send_to_monitor(hdev, skb); | |
4125 | ||
4126 | if (atomic_read(&hdev->promisc)) { | |
4127 | /* Send copy to the sockets */ | |
470fe1b5 | 4128 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4129 | } |
4130 | ||
4131 | /* Get rid of skb owner, prior to sending to the driver. */ | |
4132 | skb_orphan(skb); | |
4133 | ||
7bd8f09f | 4134 | if (hdev->send(hdev, skb) < 0) |
51086991 | 4135 | BT_ERR("%s sending frame failed", hdev->name); |
1da177e4 LT |
4136 | } |
4137 | ||
3119ae95 JH |
4138 | void hci_req_init(struct hci_request *req, struct hci_dev *hdev) |
4139 | { | |
4140 | skb_queue_head_init(&req->cmd_q); | |
4141 | req->hdev = hdev; | |
5d73e034 | 4142 | req->err = 0; |
3119ae95 JH |
4143 | } |
4144 | ||
4145 | int hci_req_run(struct hci_request *req, hci_req_complete_t complete) | |
4146 | { | |
4147 | struct hci_dev *hdev = req->hdev; | |
4148 | struct sk_buff *skb; | |
4149 | unsigned long flags; | |
4150 | ||
4151 | BT_DBG("length %u", skb_queue_len(&req->cmd_q)); | |
4152 | ||
5d73e034 AG |
4153 | /* If an error occured during request building, remove all HCI |
4154 | * commands queued on the HCI request queue. | |
4155 | */ | |
4156 | if (req->err) { | |
4157 | skb_queue_purge(&req->cmd_q); | |
4158 | return req->err; | |
4159 | } | |
4160 | ||
3119ae95 JH |
4161 | /* Do not allow empty requests */ |
4162 | if (skb_queue_empty(&req->cmd_q)) | |
382b0c39 | 4163 | return -ENODATA; |
3119ae95 JH |
4164 | |
4165 | skb = skb_peek_tail(&req->cmd_q); | |
4166 | bt_cb(skb)->req.complete = complete; | |
4167 | ||
4168 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4169 | skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q); | |
4170 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
4171 | ||
4172 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4173 | ||
4174 | return 0; | |
4175 | } | |
4176 | ||
1ca3a9d0 | 4177 | static struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, |
07dc93dd | 4178 | u32 plen, const void *param) |
1da177e4 LT |
4179 | { |
4180 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
4181 | struct hci_command_hdr *hdr; | |
4182 | struct sk_buff *skb; | |
4183 | ||
1da177e4 | 4184 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
1ca3a9d0 JH |
4185 | if (!skb) |
4186 | return NULL; | |
1da177e4 LT |
4187 | |
4188 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 4189 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
4190 | hdr->plen = plen; |
4191 | ||
4192 | if (plen) | |
4193 | memcpy(skb_put(skb, plen), param, plen); | |
4194 | ||
4195 | BT_DBG("skb len %d", skb->len); | |
4196 | ||
0d48d939 | 4197 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
c78ae283 | 4198 | |
1ca3a9d0 JH |
4199 | return skb; |
4200 | } | |
4201 | ||
4202 | /* Send HCI command */ | |
07dc93dd JH |
4203 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
4204 | const void *param) | |
1ca3a9d0 JH |
4205 | { |
4206 | struct sk_buff *skb; | |
4207 | ||
4208 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
4209 | ||
4210 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
4211 | if (!skb) { | |
4212 | BT_ERR("%s no memory for command", hdev->name); | |
4213 | return -ENOMEM; | |
4214 | } | |
4215 | ||
11714b3d JH |
4216 | /* Stand-alone HCI commands must be flaged as |
4217 | * single-command requests. | |
4218 | */ | |
4219 | bt_cb(skb)->req.start = true; | |
4220 | ||
1da177e4 | 4221 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 4222 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4223 | |
4224 | return 0; | |
4225 | } | |
1da177e4 | 4226 | |
71c76a17 | 4227 | /* Queue a command to an asynchronous HCI request */ |
07dc93dd JH |
4228 | void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, |
4229 | const void *param, u8 event) | |
71c76a17 JH |
4230 | { |
4231 | struct hci_dev *hdev = req->hdev; | |
4232 | struct sk_buff *skb; | |
4233 | ||
4234 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
4235 | ||
34739c1e AG |
4236 | /* If an error occured during request building, there is no point in |
4237 | * queueing the HCI command. We can simply return. | |
4238 | */ | |
4239 | if (req->err) | |
4240 | return; | |
4241 | ||
71c76a17 JH |
4242 | skb = hci_prepare_cmd(hdev, opcode, plen, param); |
4243 | if (!skb) { | |
5d73e034 AG |
4244 | BT_ERR("%s no memory for command (opcode 0x%4.4x)", |
4245 | hdev->name, opcode); | |
4246 | req->err = -ENOMEM; | |
e348fe6b | 4247 | return; |
71c76a17 JH |
4248 | } |
4249 | ||
4250 | if (skb_queue_empty(&req->cmd_q)) | |
4251 | bt_cb(skb)->req.start = true; | |
4252 | ||
02350a72 JH |
4253 | bt_cb(skb)->req.event = event; |
4254 | ||
71c76a17 | 4255 | skb_queue_tail(&req->cmd_q, skb); |
71c76a17 JH |
4256 | } |
4257 | ||
07dc93dd JH |
4258 | void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, |
4259 | const void *param) | |
02350a72 JH |
4260 | { |
4261 | hci_req_add_ev(req, opcode, plen, param, 0); | |
4262 | } | |
4263 | ||
1da177e4 | 4264 | /* Get data from the previously sent command */ |
a9de9248 | 4265 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
4266 | { |
4267 | struct hci_command_hdr *hdr; | |
4268 | ||
4269 | if (!hdev->sent_cmd) | |
4270 | return NULL; | |
4271 | ||
4272 | hdr = (void *) hdev->sent_cmd->data; | |
4273 | ||
a9de9248 | 4274 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
4275 | return NULL; |
4276 | ||
f0e09510 | 4277 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
4278 | |
4279 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
4280 | } | |
4281 | ||
4282 | /* Send ACL data */ | |
4283 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
4284 | { | |
4285 | struct hci_acl_hdr *hdr; | |
4286 | int len = skb->len; | |
4287 | ||
badff6d0 ACM |
4288 | skb_push(skb, HCI_ACL_HDR_SIZE); |
4289 | skb_reset_transport_header(skb); | |
9c70220b | 4290 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
4291 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
4292 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
4293 | } |
4294 | ||
ee22be7e | 4295 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 4296 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 4297 | { |
ee22be7e | 4298 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
4299 | struct hci_dev *hdev = conn->hdev; |
4300 | struct sk_buff *list; | |
4301 | ||
087bfd99 GP |
4302 | skb->len = skb_headlen(skb); |
4303 | skb->data_len = 0; | |
4304 | ||
4305 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
4306 | |
4307 | switch (hdev->dev_type) { | |
4308 | case HCI_BREDR: | |
4309 | hci_add_acl_hdr(skb, conn->handle, flags); | |
4310 | break; | |
4311 | case HCI_AMP: | |
4312 | hci_add_acl_hdr(skb, chan->handle, flags); | |
4313 | break; | |
4314 | default: | |
4315 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
4316 | return; | |
4317 | } | |
087bfd99 | 4318 | |
70f23020 AE |
4319 | list = skb_shinfo(skb)->frag_list; |
4320 | if (!list) { | |
1da177e4 LT |
4321 | /* Non fragmented */ |
4322 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
4323 | ||
73d80deb | 4324 | skb_queue_tail(queue, skb); |
1da177e4 LT |
4325 | } else { |
4326 | /* Fragmented */ | |
4327 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
4328 | ||
4329 | skb_shinfo(skb)->frag_list = NULL; | |
4330 | ||
4331 | /* Queue all fragments atomically */ | |
af3e6359 | 4332 | spin_lock(&queue->lock); |
1da177e4 | 4333 | |
73d80deb | 4334 | __skb_queue_tail(queue, skb); |
e702112f AE |
4335 | |
4336 | flags &= ~ACL_START; | |
4337 | flags |= ACL_CONT; | |
1da177e4 LT |
4338 | do { |
4339 | skb = list; list = list->next; | |
8e87d142 | 4340 | |
0d48d939 | 4341 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 4342 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
4343 | |
4344 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
4345 | ||
73d80deb | 4346 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
4347 | } while (list); |
4348 | ||
af3e6359 | 4349 | spin_unlock(&queue->lock); |
1da177e4 | 4350 | } |
73d80deb LAD |
4351 | } |
4352 | ||
4353 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
4354 | { | |
ee22be7e | 4355 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 4356 | |
f0e09510 | 4357 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 4358 | |
ee22be7e | 4359 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 4360 | |
3eff45ea | 4361 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 4362 | } |
1da177e4 LT |
4363 | |
4364 | /* Send SCO data */ | |
0d861d8b | 4365 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
4366 | { |
4367 | struct hci_dev *hdev = conn->hdev; | |
4368 | struct hci_sco_hdr hdr; | |
4369 | ||
4370 | BT_DBG("%s len %d", hdev->name, skb->len); | |
4371 | ||
aca3192c | 4372 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
4373 | hdr.dlen = skb->len; |
4374 | ||
badff6d0 ACM |
4375 | skb_push(skb, HCI_SCO_HDR_SIZE); |
4376 | skb_reset_transport_header(skb); | |
9c70220b | 4377 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 4378 | |
0d48d939 | 4379 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 4380 | |
1da177e4 | 4381 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 4382 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 4383 | } |
1da177e4 LT |
4384 | |
4385 | /* ---- HCI TX task (outgoing data) ---- */ | |
4386 | ||
4387 | /* HCI Connection scheduler */ | |
6039aa73 GP |
4388 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
4389 | int *quote) | |
1da177e4 LT |
4390 | { |
4391 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 4392 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 4393 | unsigned int num = 0, min = ~0; |
1da177e4 | 4394 | |
8e87d142 | 4395 | /* We don't have to lock device here. Connections are always |
1da177e4 | 4396 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
4397 | |
4398 | rcu_read_lock(); | |
4399 | ||
4400 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 4401 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 4402 | continue; |
769be974 MH |
4403 | |
4404 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
4405 | continue; | |
4406 | ||
1da177e4 LT |
4407 | num++; |
4408 | ||
4409 | if (c->sent < min) { | |
4410 | min = c->sent; | |
4411 | conn = c; | |
4412 | } | |
52087a79 LAD |
4413 | |
4414 | if (hci_conn_num(hdev, type) == num) | |
4415 | break; | |
1da177e4 LT |
4416 | } |
4417 | ||
bf4c6325 GP |
4418 | rcu_read_unlock(); |
4419 | ||
1da177e4 | 4420 | if (conn) { |
6ed58ec5 VT |
4421 | int cnt, q; |
4422 | ||
4423 | switch (conn->type) { | |
4424 | case ACL_LINK: | |
4425 | cnt = hdev->acl_cnt; | |
4426 | break; | |
4427 | case SCO_LINK: | |
4428 | case ESCO_LINK: | |
4429 | cnt = hdev->sco_cnt; | |
4430 | break; | |
4431 | case LE_LINK: | |
4432 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
4433 | break; | |
4434 | default: | |
4435 | cnt = 0; | |
4436 | BT_ERR("Unknown link type"); | |
4437 | } | |
4438 | ||
4439 | q = cnt / num; | |
1da177e4 LT |
4440 | *quote = q ? q : 1; |
4441 | } else | |
4442 | *quote = 0; | |
4443 | ||
4444 | BT_DBG("conn %p quote %d", conn, *quote); | |
4445 | return conn; | |
4446 | } | |
4447 | ||
6039aa73 | 4448 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
4449 | { |
4450 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 4451 | struct hci_conn *c; |
1da177e4 | 4452 | |
bae1f5d9 | 4453 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 4454 | |
bf4c6325 GP |
4455 | rcu_read_lock(); |
4456 | ||
1da177e4 | 4457 | /* Kill stalled connections */ |
bf4c6325 | 4458 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 4459 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
4460 | BT_ERR("%s killing stalled connection %pMR", |
4461 | hdev->name, &c->dst); | |
bed71748 | 4462 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
4463 | } |
4464 | } | |
bf4c6325 GP |
4465 | |
4466 | rcu_read_unlock(); | |
1da177e4 LT |
4467 | } |
4468 | ||
6039aa73 GP |
4469 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
4470 | int *quote) | |
1da177e4 | 4471 | { |
73d80deb LAD |
4472 | struct hci_conn_hash *h = &hdev->conn_hash; |
4473 | struct hci_chan *chan = NULL; | |
abc5de8f | 4474 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 4475 | struct hci_conn *conn; |
73d80deb LAD |
4476 | int cnt, q, conn_num = 0; |
4477 | ||
4478 | BT_DBG("%s", hdev->name); | |
4479 | ||
bf4c6325 GP |
4480 | rcu_read_lock(); |
4481 | ||
4482 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
4483 | struct hci_chan *tmp; |
4484 | ||
4485 | if (conn->type != type) | |
4486 | continue; | |
4487 | ||
4488 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
4489 | continue; | |
4490 | ||
4491 | conn_num++; | |
4492 | ||
8192edef | 4493 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
4494 | struct sk_buff *skb; |
4495 | ||
4496 | if (skb_queue_empty(&tmp->data_q)) | |
4497 | continue; | |
4498 | ||
4499 | skb = skb_peek(&tmp->data_q); | |
4500 | if (skb->priority < cur_prio) | |
4501 | continue; | |
4502 | ||
4503 | if (skb->priority > cur_prio) { | |
4504 | num = 0; | |
4505 | min = ~0; | |
4506 | cur_prio = skb->priority; | |
4507 | } | |
4508 | ||
4509 | num++; | |
4510 | ||
4511 | if (conn->sent < min) { | |
4512 | min = conn->sent; | |
4513 | chan = tmp; | |
4514 | } | |
4515 | } | |
4516 | ||
4517 | if (hci_conn_num(hdev, type) == conn_num) | |
4518 | break; | |
4519 | } | |
4520 | ||
bf4c6325 GP |
4521 | rcu_read_unlock(); |
4522 | ||
73d80deb LAD |
4523 | if (!chan) |
4524 | return NULL; | |
4525 | ||
4526 | switch (chan->conn->type) { | |
4527 | case ACL_LINK: | |
4528 | cnt = hdev->acl_cnt; | |
4529 | break; | |
bd1eb66b AE |
4530 | case AMP_LINK: |
4531 | cnt = hdev->block_cnt; | |
4532 | break; | |
73d80deb LAD |
4533 | case SCO_LINK: |
4534 | case ESCO_LINK: | |
4535 | cnt = hdev->sco_cnt; | |
4536 | break; | |
4537 | case LE_LINK: | |
4538 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
4539 | break; | |
4540 | default: | |
4541 | cnt = 0; | |
4542 | BT_ERR("Unknown link type"); | |
4543 | } | |
4544 | ||
4545 | q = cnt / num; | |
4546 | *quote = q ? q : 1; | |
4547 | BT_DBG("chan %p quote %d", chan, *quote); | |
4548 | return chan; | |
4549 | } | |
4550 | ||
02b20f0b LAD |
4551 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
4552 | { | |
4553 | struct hci_conn_hash *h = &hdev->conn_hash; | |
4554 | struct hci_conn *conn; | |
4555 | int num = 0; | |
4556 | ||
4557 | BT_DBG("%s", hdev->name); | |
4558 | ||
bf4c6325 GP |
4559 | rcu_read_lock(); |
4560 | ||
4561 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
4562 | struct hci_chan *chan; |
4563 | ||
4564 | if (conn->type != type) | |
4565 | continue; | |
4566 | ||
4567 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
4568 | continue; | |
4569 | ||
4570 | num++; | |
4571 | ||
8192edef | 4572 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
4573 | struct sk_buff *skb; |
4574 | ||
4575 | if (chan->sent) { | |
4576 | chan->sent = 0; | |
4577 | continue; | |
4578 | } | |
4579 | ||
4580 | if (skb_queue_empty(&chan->data_q)) | |
4581 | continue; | |
4582 | ||
4583 | skb = skb_peek(&chan->data_q); | |
4584 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
4585 | continue; | |
4586 | ||
4587 | skb->priority = HCI_PRIO_MAX - 1; | |
4588 | ||
4589 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 4590 | skb->priority); |
02b20f0b LAD |
4591 | } |
4592 | ||
4593 | if (hci_conn_num(hdev, type) == num) | |
4594 | break; | |
4595 | } | |
bf4c6325 GP |
4596 | |
4597 | rcu_read_unlock(); | |
4598 | ||
02b20f0b LAD |
4599 | } |
4600 | ||
b71d385a AE |
4601 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
4602 | { | |
4603 | /* Calculate count of blocks used by this packet */ | |
4604 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
4605 | } | |
4606 | ||
6039aa73 | 4607 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 4608 | { |
1da177e4 LT |
4609 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
4610 | /* ACL tx timeout must be longer than maximum | |
4611 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 4612 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 4613 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 4614 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 4615 | } |
63d2bc1b | 4616 | } |
1da177e4 | 4617 | |
6039aa73 | 4618 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
4619 | { |
4620 | unsigned int cnt = hdev->acl_cnt; | |
4621 | struct hci_chan *chan; | |
4622 | struct sk_buff *skb; | |
4623 | int quote; | |
4624 | ||
4625 | __check_timeout(hdev, cnt); | |
04837f64 | 4626 | |
73d80deb | 4627 | while (hdev->acl_cnt && |
a8c5fb1a | 4628 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
4629 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4630 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4631 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4632 | skb->len, skb->priority); |
73d80deb | 4633 | |
ec1cce24 LAD |
4634 | /* Stop if priority has changed */ |
4635 | if (skb->priority < priority) | |
4636 | break; | |
4637 | ||
4638 | skb = skb_dequeue(&chan->data_q); | |
4639 | ||
73d80deb | 4640 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 4641 | bt_cb(skb)->force_active); |
04837f64 | 4642 | |
57d17d70 | 4643 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4644 | hdev->acl_last_tx = jiffies; |
4645 | ||
4646 | hdev->acl_cnt--; | |
73d80deb LAD |
4647 | chan->sent++; |
4648 | chan->conn->sent++; | |
1da177e4 LT |
4649 | } |
4650 | } | |
02b20f0b LAD |
4651 | |
4652 | if (cnt != hdev->acl_cnt) | |
4653 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
4654 | } |
4655 | ||
6039aa73 | 4656 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 4657 | { |
63d2bc1b | 4658 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
4659 | struct hci_chan *chan; |
4660 | struct sk_buff *skb; | |
4661 | int quote; | |
bd1eb66b | 4662 | u8 type; |
b71d385a | 4663 | |
63d2bc1b | 4664 | __check_timeout(hdev, cnt); |
b71d385a | 4665 | |
bd1eb66b AE |
4666 | BT_DBG("%s", hdev->name); |
4667 | ||
4668 | if (hdev->dev_type == HCI_AMP) | |
4669 | type = AMP_LINK; | |
4670 | else | |
4671 | type = ACL_LINK; | |
4672 | ||
b71d385a | 4673 | while (hdev->block_cnt > 0 && |
bd1eb66b | 4674 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
4675 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4676 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
4677 | int blocks; | |
4678 | ||
4679 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 4680 | skb->len, skb->priority); |
b71d385a AE |
4681 | |
4682 | /* Stop if priority has changed */ | |
4683 | if (skb->priority < priority) | |
4684 | break; | |
4685 | ||
4686 | skb = skb_dequeue(&chan->data_q); | |
4687 | ||
4688 | blocks = __get_blocks(hdev, skb); | |
4689 | if (blocks > hdev->block_cnt) | |
4690 | return; | |
4691 | ||
4692 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 4693 | bt_cb(skb)->force_active); |
b71d385a | 4694 | |
57d17d70 | 4695 | hci_send_frame(hdev, skb); |
b71d385a AE |
4696 | hdev->acl_last_tx = jiffies; |
4697 | ||
4698 | hdev->block_cnt -= blocks; | |
4699 | quote -= blocks; | |
4700 | ||
4701 | chan->sent += blocks; | |
4702 | chan->conn->sent += blocks; | |
4703 | } | |
4704 | } | |
4705 | ||
4706 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 4707 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
4708 | } |
4709 | ||
6039aa73 | 4710 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
4711 | { |
4712 | BT_DBG("%s", hdev->name); | |
4713 | ||
bd1eb66b AE |
4714 | /* No ACL link over BR/EDR controller */ |
4715 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
4716 | return; | |
4717 | ||
4718 | /* No AMP link over AMP controller */ | |
4719 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
4720 | return; |
4721 | ||
4722 | switch (hdev->flow_ctl_mode) { | |
4723 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
4724 | hci_sched_acl_pkt(hdev); | |
4725 | break; | |
4726 | ||
4727 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
4728 | hci_sched_acl_blk(hdev); | |
4729 | break; | |
4730 | } | |
4731 | } | |
4732 | ||
1da177e4 | 4733 | /* Schedule SCO */ |
6039aa73 | 4734 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
4735 | { |
4736 | struct hci_conn *conn; | |
4737 | struct sk_buff *skb; | |
4738 | int quote; | |
4739 | ||
4740 | BT_DBG("%s", hdev->name); | |
4741 | ||
52087a79 LAD |
4742 | if (!hci_conn_num(hdev, SCO_LINK)) |
4743 | return; | |
4744 | ||
1da177e4 LT |
4745 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
4746 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
4747 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4748 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4749 | |
4750 | conn->sent++; | |
4751 | if (conn->sent == ~0) | |
4752 | conn->sent = 0; | |
4753 | } | |
4754 | } | |
4755 | } | |
4756 | ||
6039aa73 | 4757 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
4758 | { |
4759 | struct hci_conn *conn; | |
4760 | struct sk_buff *skb; | |
4761 | int quote; | |
4762 | ||
4763 | BT_DBG("%s", hdev->name); | |
4764 | ||
52087a79 LAD |
4765 | if (!hci_conn_num(hdev, ESCO_LINK)) |
4766 | return; | |
4767 | ||
8fc9ced3 GP |
4768 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
4769 | "e))) { | |
b6a0dc82 MH |
4770 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
4771 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4772 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
4773 | |
4774 | conn->sent++; | |
4775 | if (conn->sent == ~0) | |
4776 | conn->sent = 0; | |
4777 | } | |
4778 | } | |
4779 | } | |
4780 | ||
6039aa73 | 4781 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 4782 | { |
73d80deb | 4783 | struct hci_chan *chan; |
6ed58ec5 | 4784 | struct sk_buff *skb; |
02b20f0b | 4785 | int quote, cnt, tmp; |
6ed58ec5 VT |
4786 | |
4787 | BT_DBG("%s", hdev->name); | |
4788 | ||
52087a79 LAD |
4789 | if (!hci_conn_num(hdev, LE_LINK)) |
4790 | return; | |
4791 | ||
6ed58ec5 VT |
4792 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
4793 | /* LE tx timeout must be longer than maximum | |
4794 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 4795 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 4796 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 4797 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
4798 | } |
4799 | ||
4800 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 4801 | tmp = cnt; |
73d80deb | 4802 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
4803 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4804 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4805 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4806 | skb->len, skb->priority); |
6ed58ec5 | 4807 | |
ec1cce24 LAD |
4808 | /* Stop if priority has changed */ |
4809 | if (skb->priority < priority) | |
4810 | break; | |
4811 | ||
4812 | skb = skb_dequeue(&chan->data_q); | |
4813 | ||
57d17d70 | 4814 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
4815 | hdev->le_last_tx = jiffies; |
4816 | ||
4817 | cnt--; | |
73d80deb LAD |
4818 | chan->sent++; |
4819 | chan->conn->sent++; | |
6ed58ec5 VT |
4820 | } |
4821 | } | |
73d80deb | 4822 | |
6ed58ec5 VT |
4823 | if (hdev->le_pkts) |
4824 | hdev->le_cnt = cnt; | |
4825 | else | |
4826 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
4827 | |
4828 | if (cnt != tmp) | |
4829 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
4830 | } |
4831 | ||
3eff45ea | 4832 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 4833 | { |
3eff45ea | 4834 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
4835 | struct sk_buff *skb; |
4836 | ||
6ed58ec5 | 4837 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 4838 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 4839 | |
52de599e MH |
4840 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
4841 | /* Schedule queues and send stuff to HCI driver */ | |
4842 | hci_sched_acl(hdev); | |
4843 | hci_sched_sco(hdev); | |
4844 | hci_sched_esco(hdev); | |
4845 | hci_sched_le(hdev); | |
4846 | } | |
6ed58ec5 | 4847 | |
1da177e4 LT |
4848 | /* Send next queued raw (unknown type) packet */ |
4849 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 4850 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4851 | } |
4852 | ||
25985edc | 4853 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
4854 | |
4855 | /* ACL data packet */ | |
6039aa73 | 4856 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4857 | { |
4858 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
4859 | struct hci_conn *conn; | |
4860 | __u16 handle, flags; | |
4861 | ||
4862 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
4863 | ||
4864 | handle = __le16_to_cpu(hdr->handle); | |
4865 | flags = hci_flags(handle); | |
4866 | handle = hci_handle(handle); | |
4867 | ||
f0e09510 | 4868 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 4869 | handle, flags); |
1da177e4 LT |
4870 | |
4871 | hdev->stat.acl_rx++; | |
4872 | ||
4873 | hci_dev_lock(hdev); | |
4874 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4875 | hci_dev_unlock(hdev); | |
8e87d142 | 4876 | |
1da177e4 | 4877 | if (conn) { |
65983fc7 | 4878 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 4879 | |
1da177e4 | 4880 | /* Send to upper protocol */ |
686ebf28 UF |
4881 | l2cap_recv_acldata(conn, skb, flags); |
4882 | return; | |
1da177e4 | 4883 | } else { |
8e87d142 | 4884 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 4885 | hdev->name, handle); |
1da177e4 LT |
4886 | } |
4887 | ||
4888 | kfree_skb(skb); | |
4889 | } | |
4890 | ||
4891 | /* SCO data packet */ | |
6039aa73 | 4892 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4893 | { |
4894 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
4895 | struct hci_conn *conn; | |
4896 | __u16 handle; | |
4897 | ||
4898 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
4899 | ||
4900 | handle = __le16_to_cpu(hdr->handle); | |
4901 | ||
f0e09510 | 4902 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
4903 | |
4904 | hdev->stat.sco_rx++; | |
4905 | ||
4906 | hci_dev_lock(hdev); | |
4907 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4908 | hci_dev_unlock(hdev); | |
4909 | ||
4910 | if (conn) { | |
1da177e4 | 4911 | /* Send to upper protocol */ |
686ebf28 UF |
4912 | sco_recv_scodata(conn, skb); |
4913 | return; | |
1da177e4 | 4914 | } else { |
8e87d142 | 4915 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 4916 | hdev->name, handle); |
1da177e4 LT |
4917 | } |
4918 | ||
4919 | kfree_skb(skb); | |
4920 | } | |
4921 | ||
9238f36a JH |
4922 | static bool hci_req_is_complete(struct hci_dev *hdev) |
4923 | { | |
4924 | struct sk_buff *skb; | |
4925 | ||
4926 | skb = skb_peek(&hdev->cmd_q); | |
4927 | if (!skb) | |
4928 | return true; | |
4929 | ||
4930 | return bt_cb(skb)->req.start; | |
4931 | } | |
4932 | ||
42c6b129 JH |
4933 | static void hci_resend_last(struct hci_dev *hdev) |
4934 | { | |
4935 | struct hci_command_hdr *sent; | |
4936 | struct sk_buff *skb; | |
4937 | u16 opcode; | |
4938 | ||
4939 | if (!hdev->sent_cmd) | |
4940 | return; | |
4941 | ||
4942 | sent = (void *) hdev->sent_cmd->data; | |
4943 | opcode = __le16_to_cpu(sent->opcode); | |
4944 | if (opcode == HCI_OP_RESET) | |
4945 | return; | |
4946 | ||
4947 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
4948 | if (!skb) | |
4949 | return; | |
4950 | ||
4951 | skb_queue_head(&hdev->cmd_q, skb); | |
4952 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4953 | } | |
4954 | ||
9238f36a JH |
4955 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status) |
4956 | { | |
4957 | hci_req_complete_t req_complete = NULL; | |
4958 | struct sk_buff *skb; | |
4959 | unsigned long flags; | |
4960 | ||
4961 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
4962 | ||
42c6b129 JH |
4963 | /* If the completed command doesn't match the last one that was |
4964 | * sent we need to do special handling of it. | |
9238f36a | 4965 | */ |
42c6b129 JH |
4966 | if (!hci_sent_cmd_data(hdev, opcode)) { |
4967 | /* Some CSR based controllers generate a spontaneous | |
4968 | * reset complete event during init and any pending | |
4969 | * command will never be completed. In such a case we | |
4970 | * need to resend whatever was the last sent | |
4971 | * command. | |
4972 | */ | |
4973 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
4974 | hci_resend_last(hdev); | |
4975 | ||
9238f36a | 4976 | return; |
42c6b129 | 4977 | } |
9238f36a JH |
4978 | |
4979 | /* If the command succeeded and there's still more commands in | |
4980 | * this request the request is not yet complete. | |
4981 | */ | |
4982 | if (!status && !hci_req_is_complete(hdev)) | |
4983 | return; | |
4984 | ||
4985 | /* If this was the last command in a request the complete | |
4986 | * callback would be found in hdev->sent_cmd instead of the | |
4987 | * command queue (hdev->cmd_q). | |
4988 | */ | |
4989 | if (hdev->sent_cmd) { | |
4990 | req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
53e21fbc JH |
4991 | |
4992 | if (req_complete) { | |
4993 | /* We must set the complete callback to NULL to | |
4994 | * avoid calling the callback more than once if | |
4995 | * this function gets called again. | |
4996 | */ | |
4997 | bt_cb(hdev->sent_cmd)->req.complete = NULL; | |
4998 | ||
9238f36a | 4999 | goto call_complete; |
53e21fbc | 5000 | } |
9238f36a JH |
5001 | } |
5002 | ||
5003 | /* Remove all pending commands belonging to this request */ | |
5004 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
5005 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
5006 | if (bt_cb(skb)->req.start) { | |
5007 | __skb_queue_head(&hdev->cmd_q, skb); | |
5008 | break; | |
5009 | } | |
5010 | ||
5011 | req_complete = bt_cb(skb)->req.complete; | |
5012 | kfree_skb(skb); | |
5013 | } | |
5014 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
5015 | ||
5016 | call_complete: | |
5017 | if (req_complete) | |
5018 | req_complete(hdev, status); | |
5019 | } | |
5020 | ||
b78752cc | 5021 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 5022 | { |
b78752cc | 5023 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
5024 | struct sk_buff *skb; |
5025 | ||
5026 | BT_DBG("%s", hdev->name); | |
5027 | ||
1da177e4 | 5028 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
5029 | /* Send copy to monitor */ |
5030 | hci_send_to_monitor(hdev, skb); | |
5031 | ||
1da177e4 LT |
5032 | if (atomic_read(&hdev->promisc)) { |
5033 | /* Send copy to the sockets */ | |
470fe1b5 | 5034 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
5035 | } |
5036 | ||
0736cfa8 MH |
5037 | if (test_bit(HCI_RAW, &hdev->flags) || |
5038 | test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { | |
1da177e4 LT |
5039 | kfree_skb(skb); |
5040 | continue; | |
5041 | } | |
5042 | ||
5043 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
5044 | /* Don't process data packets in this states. */ | |
0d48d939 | 5045 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
5046 | case HCI_ACLDATA_PKT: |
5047 | case HCI_SCODATA_PKT: | |
5048 | kfree_skb(skb); | |
5049 | continue; | |
3ff50b79 | 5050 | } |
1da177e4 LT |
5051 | } |
5052 | ||
5053 | /* Process frame */ | |
0d48d939 | 5054 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 5055 | case HCI_EVENT_PKT: |
b78752cc | 5056 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
5057 | hci_event_packet(hdev, skb); |
5058 | break; | |
5059 | ||
5060 | case HCI_ACLDATA_PKT: | |
5061 | BT_DBG("%s ACL data packet", hdev->name); | |
5062 | hci_acldata_packet(hdev, skb); | |
5063 | break; | |
5064 | ||
5065 | case HCI_SCODATA_PKT: | |
5066 | BT_DBG("%s SCO data packet", hdev->name); | |
5067 | hci_scodata_packet(hdev, skb); | |
5068 | break; | |
5069 | ||
5070 | default: | |
5071 | kfree_skb(skb); | |
5072 | break; | |
5073 | } | |
5074 | } | |
1da177e4 LT |
5075 | } |
5076 | ||
c347b765 | 5077 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 5078 | { |
c347b765 | 5079 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
5080 | struct sk_buff *skb; |
5081 | ||
2104786b AE |
5082 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
5083 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 5084 | |
1da177e4 | 5085 | /* Send queued commands */ |
5a08ecce AE |
5086 | if (atomic_read(&hdev->cmd_cnt)) { |
5087 | skb = skb_dequeue(&hdev->cmd_q); | |
5088 | if (!skb) | |
5089 | return; | |
5090 | ||
7585b97a | 5091 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 5092 | |
a675d7f1 | 5093 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 5094 | if (hdev->sent_cmd) { |
1da177e4 | 5095 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 5096 | hci_send_frame(hdev, skb); |
7bdb8a5c SJ |
5097 | if (test_bit(HCI_RESET, &hdev->flags)) |
5098 | del_timer(&hdev->cmd_timer); | |
5099 | else | |
5100 | mod_timer(&hdev->cmd_timer, | |
5f246e89 | 5101 | jiffies + HCI_CMD_TIMEOUT); |
1da177e4 LT |
5102 | } else { |
5103 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 5104 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
5105 | } |
5106 | } | |
5107 | } | |
b1efcc28 AG |
5108 | |
5109 | void hci_req_add_le_scan_disable(struct hci_request *req) | |
5110 | { | |
5111 | struct hci_cp_le_set_scan_enable cp; | |
5112 | ||
5113 | memset(&cp, 0, sizeof(cp)); | |
5114 | cp.enable = LE_SCAN_DISABLE; | |
5115 | hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
5116 | } | |
a4790dbd AG |
5117 | |
5118 | static void update_background_scan_complete(struct hci_dev *hdev, u8 status) | |
5119 | { | |
5120 | if (status) | |
5121 | BT_DBG("HCI request failed to update background scanning: " | |
5122 | "status 0x%2.2x", status); | |
5123 | } | |
5124 | ||
5125 | /* This function controls the background scanning based on hdev->pend_le_conns | |
5126 | * list. If there are pending LE connection we start the background scanning, | |
5127 | * otherwise we stop it. | |
5128 | * | |
5129 | * This function requires the caller holds hdev->lock. | |
5130 | */ | |
5131 | void hci_update_background_scan(struct hci_dev *hdev) | |
5132 | { | |
5133 | struct hci_cp_le_set_scan_param param_cp; | |
5134 | struct hci_cp_le_set_scan_enable enable_cp; | |
5135 | struct hci_request req; | |
5136 | struct hci_conn *conn; | |
5137 | int err; | |
5138 | ||
5139 | hci_req_init(&req, hdev); | |
5140 | ||
5141 | if (list_empty(&hdev->pend_le_conns)) { | |
5142 | /* If there is no pending LE connections, we should stop | |
5143 | * the background scanning. | |
5144 | */ | |
5145 | ||
5146 | /* If controller is not scanning we are done. */ | |
5147 | if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
5148 | return; | |
5149 | ||
5150 | hci_req_add_le_scan_disable(&req); | |
5151 | ||
5152 | BT_DBG("%s stopping background scanning", hdev->name); | |
5153 | } else { | |
5154 | u8 own_addr_type; | |
5155 | ||
5156 | /* If there is at least one pending LE connection, we should | |
5157 | * keep the background scan running. | |
5158 | */ | |
5159 | ||
5160 | /* If controller is already scanning we are done. */ | |
5161 | if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
5162 | return; | |
5163 | ||
5164 | /* If controller is connecting, we should not start scanning | |
5165 | * since some controllers are not able to scan and connect at | |
5166 | * the same time. | |
5167 | */ | |
5168 | conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT); | |
5169 | if (conn) | |
5170 | return; | |
5171 | ||
5172 | /* Set require_privacy to true to avoid identification from | |
5173 | * unknown peer devices. Since this is passive scanning, no | |
5174 | * SCAN_REQ using the local identity should be sent. Mandating | |
5175 | * privacy is just an extra precaution. | |
5176 | */ | |
5177 | if (hci_update_random_address(&req, true, &own_addr_type)) | |
5178 | return; | |
5179 | ||
5180 | memset(¶m_cp, 0, sizeof(param_cp)); | |
5181 | param_cp.type = LE_SCAN_PASSIVE; | |
5182 | param_cp.interval = cpu_to_le16(hdev->le_scan_interval); | |
5183 | param_cp.window = cpu_to_le16(hdev->le_scan_window); | |
5184 | param_cp.own_address_type = own_addr_type; | |
5185 | hci_req_add(&req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp), | |
5186 | ¶m_cp); | |
5187 | ||
5188 | memset(&enable_cp, 0, sizeof(enable_cp)); | |
5189 | enable_cp.enable = LE_SCAN_ENABLE; | |
5190 | enable_cp.filter_dup = LE_SCAN_FILTER_DUP_DISABLE; | |
5191 | hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp), | |
5192 | &enable_cp); | |
5193 | ||
5194 | BT_DBG("%s starting background scanning", hdev->name); | |
5195 | } | |
5196 | ||
5197 | err = hci_req_run(&req, update_background_scan_complete); | |
5198 | if (err) | |
5199 | BT_ERR("Failed to run HCI request: err %d", err); | |
5200 | } |