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> | |
4bc58f51 | 37 | #include <net/bluetooth/l2cap.h> |
1da177e4 | 38 | |
970c4e46 JH |
39 | #include "smp.h" |
40 | ||
b78752cc | 41 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 42 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 43 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 44 | |
1da177e4 LT |
45 | /* HCI device list */ |
46 | LIST_HEAD(hci_dev_list); | |
47 | DEFINE_RWLOCK(hci_dev_list_lock); | |
48 | ||
49 | /* HCI callback list */ | |
50 | LIST_HEAD(hci_cb_list); | |
51 | DEFINE_RWLOCK(hci_cb_list_lock); | |
52 | ||
3df92b31 SL |
53 | /* HCI ID Numbering */ |
54 | static DEFINE_IDA(hci_index_ida); | |
55 | ||
1da177e4 LT |
56 | /* ---- HCI notifications ---- */ |
57 | ||
6516455d | 58 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 59 | { |
040030ef | 60 | hci_sock_dev_event(hdev, event); |
1da177e4 LT |
61 | } |
62 | ||
baf27f6e MH |
63 | /* ---- HCI debugfs entries ---- */ |
64 | ||
4b4148e9 MH |
65 | static ssize_t dut_mode_read(struct file *file, char __user *user_buf, |
66 | size_t count, loff_t *ppos) | |
67 | { | |
68 | struct hci_dev *hdev = file->private_data; | |
69 | char buf[3]; | |
70 | ||
71 | buf[0] = test_bit(HCI_DUT_MODE, &hdev->dev_flags) ? 'Y': 'N'; | |
72 | buf[1] = '\n'; | |
73 | buf[2] = '\0'; | |
74 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
75 | } | |
76 | ||
77 | static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, | |
78 | size_t count, loff_t *ppos) | |
79 | { | |
80 | struct hci_dev *hdev = file->private_data; | |
81 | struct sk_buff *skb; | |
82 | char buf[32]; | |
83 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
84 | bool enable; | |
85 | int err; | |
86 | ||
87 | if (!test_bit(HCI_UP, &hdev->flags)) | |
88 | return -ENETDOWN; | |
89 | ||
90 | if (copy_from_user(buf, user_buf, buf_size)) | |
91 | return -EFAULT; | |
92 | ||
93 | buf[buf_size] = '\0'; | |
94 | if (strtobool(buf, &enable)) | |
95 | return -EINVAL; | |
96 | ||
97 | if (enable == test_bit(HCI_DUT_MODE, &hdev->dev_flags)) | |
98 | return -EALREADY; | |
99 | ||
100 | hci_req_lock(hdev); | |
101 | if (enable) | |
102 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, | |
103 | HCI_CMD_TIMEOUT); | |
104 | else | |
105 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, | |
106 | HCI_CMD_TIMEOUT); | |
107 | hci_req_unlock(hdev); | |
108 | ||
109 | if (IS_ERR(skb)) | |
110 | return PTR_ERR(skb); | |
111 | ||
112 | err = -bt_to_errno(skb->data[0]); | |
113 | kfree_skb(skb); | |
114 | ||
115 | if (err < 0) | |
116 | return err; | |
117 | ||
118 | change_bit(HCI_DUT_MODE, &hdev->dev_flags); | |
119 | ||
120 | return count; | |
121 | } | |
122 | ||
123 | static const struct file_operations dut_mode_fops = { | |
124 | .open = simple_open, | |
125 | .read = dut_mode_read, | |
126 | .write = dut_mode_write, | |
127 | .llseek = default_llseek, | |
128 | }; | |
129 | ||
dfb826a8 MH |
130 | static int features_show(struct seq_file *f, void *ptr) |
131 | { | |
132 | struct hci_dev *hdev = f->private; | |
133 | u8 p; | |
134 | ||
135 | hci_dev_lock(hdev); | |
136 | for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
cfbb2b5b | 137 | seq_printf(f, "%2u: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x " |
dfb826a8 MH |
138 | "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n", p, |
139 | hdev->features[p][0], hdev->features[p][1], | |
140 | hdev->features[p][2], hdev->features[p][3], | |
141 | hdev->features[p][4], hdev->features[p][5], | |
142 | hdev->features[p][6], hdev->features[p][7]); | |
143 | } | |
cfbb2b5b MH |
144 | if (lmp_le_capable(hdev)) |
145 | seq_printf(f, "LE: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x " | |
146 | "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n", | |
147 | hdev->le_features[0], hdev->le_features[1], | |
148 | hdev->le_features[2], hdev->le_features[3], | |
149 | hdev->le_features[4], hdev->le_features[5], | |
150 | hdev->le_features[6], hdev->le_features[7]); | |
dfb826a8 MH |
151 | hci_dev_unlock(hdev); |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | static int features_open(struct inode *inode, struct file *file) | |
157 | { | |
158 | return single_open(file, features_show, inode->i_private); | |
159 | } | |
160 | ||
161 | static const struct file_operations features_fops = { | |
162 | .open = features_open, | |
163 | .read = seq_read, | |
164 | .llseek = seq_lseek, | |
165 | .release = single_release, | |
166 | }; | |
167 | ||
70afe0b8 MH |
168 | static int blacklist_show(struct seq_file *f, void *p) |
169 | { | |
170 | struct hci_dev *hdev = f->private; | |
171 | struct bdaddr_list *b; | |
172 | ||
173 | hci_dev_lock(hdev); | |
174 | list_for_each_entry(b, &hdev->blacklist, list) | |
b25f0785 | 175 | seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type); |
70afe0b8 MH |
176 | hci_dev_unlock(hdev); |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
181 | static int blacklist_open(struct inode *inode, struct file *file) | |
182 | { | |
183 | return single_open(file, blacklist_show, inode->i_private); | |
184 | } | |
185 | ||
186 | static const struct file_operations blacklist_fops = { | |
187 | .open = blacklist_open, | |
188 | .read = seq_read, | |
189 | .llseek = seq_lseek, | |
190 | .release = single_release, | |
191 | }; | |
192 | ||
47219839 MH |
193 | static int uuids_show(struct seq_file *f, void *p) |
194 | { | |
195 | struct hci_dev *hdev = f->private; | |
196 | struct bt_uuid *uuid; | |
197 | ||
198 | hci_dev_lock(hdev); | |
199 | list_for_each_entry(uuid, &hdev->uuids, list) { | |
58f01aa9 MH |
200 | u8 i, val[16]; |
201 | ||
202 | /* The Bluetooth UUID values are stored in big endian, | |
203 | * but with reversed byte order. So convert them into | |
204 | * the right order for the %pUb modifier. | |
205 | */ | |
206 | for (i = 0; i < 16; i++) | |
207 | val[i] = uuid->uuid[15 - i]; | |
208 | ||
209 | seq_printf(f, "%pUb\n", val); | |
47219839 MH |
210 | } |
211 | hci_dev_unlock(hdev); | |
212 | ||
213 | return 0; | |
214 | } | |
215 | ||
216 | static int uuids_open(struct inode *inode, struct file *file) | |
217 | { | |
218 | return single_open(file, uuids_show, inode->i_private); | |
219 | } | |
220 | ||
221 | static const struct file_operations uuids_fops = { | |
222 | .open = uuids_open, | |
223 | .read = seq_read, | |
224 | .llseek = seq_lseek, | |
225 | .release = single_release, | |
226 | }; | |
227 | ||
baf27f6e MH |
228 | static int inquiry_cache_show(struct seq_file *f, void *p) |
229 | { | |
230 | struct hci_dev *hdev = f->private; | |
231 | struct discovery_state *cache = &hdev->discovery; | |
232 | struct inquiry_entry *e; | |
233 | ||
234 | hci_dev_lock(hdev); | |
235 | ||
236 | list_for_each_entry(e, &cache->all, all) { | |
237 | struct inquiry_data *data = &e->data; | |
238 | seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", | |
239 | &data->bdaddr, | |
240 | data->pscan_rep_mode, data->pscan_period_mode, | |
241 | data->pscan_mode, data->dev_class[2], | |
242 | data->dev_class[1], data->dev_class[0], | |
243 | __le16_to_cpu(data->clock_offset), | |
244 | data->rssi, data->ssp_mode, e->timestamp); | |
245 | } | |
246 | ||
247 | hci_dev_unlock(hdev); | |
248 | ||
249 | return 0; | |
250 | } | |
251 | ||
252 | static int inquiry_cache_open(struct inode *inode, struct file *file) | |
253 | { | |
254 | return single_open(file, inquiry_cache_show, inode->i_private); | |
255 | } | |
256 | ||
257 | static const struct file_operations inquiry_cache_fops = { | |
258 | .open = inquiry_cache_open, | |
259 | .read = seq_read, | |
260 | .llseek = seq_lseek, | |
261 | .release = single_release, | |
262 | }; | |
263 | ||
02d08d15 MH |
264 | static int link_keys_show(struct seq_file *f, void *ptr) |
265 | { | |
266 | struct hci_dev *hdev = f->private; | |
267 | struct list_head *p, *n; | |
268 | ||
269 | hci_dev_lock(hdev); | |
270 | list_for_each_safe(p, n, &hdev->link_keys) { | |
271 | struct link_key *key = list_entry(p, struct link_key, list); | |
272 | seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type, | |
273 | HCI_LINK_KEY_SIZE, key->val, key->pin_len); | |
274 | } | |
275 | hci_dev_unlock(hdev); | |
276 | ||
277 | return 0; | |
278 | } | |
279 | ||
280 | static int link_keys_open(struct inode *inode, struct file *file) | |
281 | { | |
282 | return single_open(file, link_keys_show, inode->i_private); | |
283 | } | |
284 | ||
285 | static const struct file_operations link_keys_fops = { | |
286 | .open = link_keys_open, | |
287 | .read = seq_read, | |
288 | .llseek = seq_lseek, | |
289 | .release = single_release, | |
290 | }; | |
291 | ||
babdbb3c MH |
292 | static int dev_class_show(struct seq_file *f, void *ptr) |
293 | { | |
294 | struct hci_dev *hdev = f->private; | |
295 | ||
296 | hci_dev_lock(hdev); | |
297 | seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2], | |
298 | hdev->dev_class[1], hdev->dev_class[0]); | |
299 | hci_dev_unlock(hdev); | |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
304 | static int dev_class_open(struct inode *inode, struct file *file) | |
305 | { | |
306 | return single_open(file, dev_class_show, inode->i_private); | |
307 | } | |
308 | ||
309 | static const struct file_operations dev_class_fops = { | |
310 | .open = dev_class_open, | |
311 | .read = seq_read, | |
312 | .llseek = seq_lseek, | |
313 | .release = single_release, | |
314 | }; | |
315 | ||
041000b9 MH |
316 | static int voice_setting_get(void *data, u64 *val) |
317 | { | |
318 | struct hci_dev *hdev = data; | |
319 | ||
320 | hci_dev_lock(hdev); | |
321 | *val = hdev->voice_setting; | |
322 | hci_dev_unlock(hdev); | |
323 | ||
324 | return 0; | |
325 | } | |
326 | ||
327 | DEFINE_SIMPLE_ATTRIBUTE(voice_setting_fops, voice_setting_get, | |
328 | NULL, "0x%4.4llx\n"); | |
329 | ||
ebd1e33b MH |
330 | static int auto_accept_delay_set(void *data, u64 val) |
331 | { | |
332 | struct hci_dev *hdev = data; | |
333 | ||
334 | hci_dev_lock(hdev); | |
335 | hdev->auto_accept_delay = val; | |
336 | hci_dev_unlock(hdev); | |
337 | ||
338 | return 0; | |
339 | } | |
340 | ||
341 | static int auto_accept_delay_get(void *data, u64 *val) | |
342 | { | |
343 | struct hci_dev *hdev = data; | |
344 | ||
345 | hci_dev_lock(hdev); | |
346 | *val = hdev->auto_accept_delay; | |
347 | hci_dev_unlock(hdev); | |
348 | ||
349 | return 0; | |
350 | } | |
351 | ||
352 | DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get, | |
353 | auto_accept_delay_set, "%llu\n"); | |
354 | ||
06f5b778 MH |
355 | static int ssp_debug_mode_set(void *data, u64 val) |
356 | { | |
357 | struct hci_dev *hdev = data; | |
358 | struct sk_buff *skb; | |
359 | __u8 mode; | |
360 | int err; | |
361 | ||
362 | if (val != 0 && val != 1) | |
363 | return -EINVAL; | |
364 | ||
365 | if (!test_bit(HCI_UP, &hdev->flags)) | |
366 | return -ENETDOWN; | |
367 | ||
368 | hci_req_lock(hdev); | |
369 | mode = val; | |
370 | skb = __hci_cmd_sync(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE, sizeof(mode), | |
371 | &mode, HCI_CMD_TIMEOUT); | |
372 | hci_req_unlock(hdev); | |
373 | ||
374 | if (IS_ERR(skb)) | |
375 | return PTR_ERR(skb); | |
376 | ||
377 | err = -bt_to_errno(skb->data[0]); | |
378 | kfree_skb(skb); | |
379 | ||
380 | if (err < 0) | |
381 | return err; | |
382 | ||
383 | hci_dev_lock(hdev); | |
384 | hdev->ssp_debug_mode = val; | |
385 | hci_dev_unlock(hdev); | |
386 | ||
387 | return 0; | |
388 | } | |
389 | ||
390 | static int ssp_debug_mode_get(void *data, u64 *val) | |
391 | { | |
392 | struct hci_dev *hdev = data; | |
393 | ||
394 | hci_dev_lock(hdev); | |
395 | *val = hdev->ssp_debug_mode; | |
396 | hci_dev_unlock(hdev); | |
397 | ||
398 | return 0; | |
399 | } | |
400 | ||
401 | DEFINE_SIMPLE_ATTRIBUTE(ssp_debug_mode_fops, ssp_debug_mode_get, | |
402 | ssp_debug_mode_set, "%llu\n"); | |
403 | ||
5afeac14 MH |
404 | static ssize_t force_sc_support_read(struct file *file, char __user *user_buf, |
405 | size_t count, loff_t *ppos) | |
406 | { | |
407 | struct hci_dev *hdev = file->private_data; | |
408 | char buf[3]; | |
409 | ||
410 | buf[0] = test_bit(HCI_FORCE_SC, &hdev->dev_flags) ? 'Y': 'N'; | |
411 | buf[1] = '\n'; | |
412 | buf[2] = '\0'; | |
413 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
414 | } | |
415 | ||
416 | static ssize_t force_sc_support_write(struct file *file, | |
417 | const char __user *user_buf, | |
418 | size_t count, loff_t *ppos) | |
419 | { | |
420 | struct hci_dev *hdev = file->private_data; | |
421 | char buf[32]; | |
422 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
423 | bool enable; | |
424 | ||
425 | if (test_bit(HCI_UP, &hdev->flags)) | |
426 | return -EBUSY; | |
427 | ||
428 | if (copy_from_user(buf, user_buf, buf_size)) | |
429 | return -EFAULT; | |
430 | ||
431 | buf[buf_size] = '\0'; | |
432 | if (strtobool(buf, &enable)) | |
433 | return -EINVAL; | |
434 | ||
435 | if (enable == test_bit(HCI_FORCE_SC, &hdev->dev_flags)) | |
436 | return -EALREADY; | |
437 | ||
438 | change_bit(HCI_FORCE_SC, &hdev->dev_flags); | |
439 | ||
440 | return count; | |
441 | } | |
442 | ||
443 | static const struct file_operations force_sc_support_fops = { | |
444 | .open = simple_open, | |
445 | .read = force_sc_support_read, | |
446 | .write = force_sc_support_write, | |
447 | .llseek = default_llseek, | |
448 | }; | |
449 | ||
134c2a89 MH |
450 | static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf, |
451 | size_t count, loff_t *ppos) | |
452 | { | |
453 | struct hci_dev *hdev = file->private_data; | |
454 | char buf[3]; | |
455 | ||
456 | buf[0] = test_bit(HCI_SC_ONLY, &hdev->dev_flags) ? 'Y': 'N'; | |
457 | buf[1] = '\n'; | |
458 | buf[2] = '\0'; | |
459 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
460 | } | |
461 | ||
462 | static const struct file_operations sc_only_mode_fops = { | |
463 | .open = simple_open, | |
464 | .read = sc_only_mode_read, | |
465 | .llseek = default_llseek, | |
466 | }; | |
467 | ||
2bfa3531 MH |
468 | static int idle_timeout_set(void *data, u64 val) |
469 | { | |
470 | struct hci_dev *hdev = data; | |
471 | ||
472 | if (val != 0 && (val < 500 || val > 3600000)) | |
473 | return -EINVAL; | |
474 | ||
475 | hci_dev_lock(hdev); | |
2be48b65 | 476 | hdev->idle_timeout = val; |
2bfa3531 MH |
477 | hci_dev_unlock(hdev); |
478 | ||
479 | return 0; | |
480 | } | |
481 | ||
482 | static int idle_timeout_get(void *data, u64 *val) | |
483 | { | |
484 | struct hci_dev *hdev = data; | |
485 | ||
486 | hci_dev_lock(hdev); | |
487 | *val = hdev->idle_timeout; | |
488 | hci_dev_unlock(hdev); | |
489 | ||
490 | return 0; | |
491 | } | |
492 | ||
493 | DEFINE_SIMPLE_ATTRIBUTE(idle_timeout_fops, idle_timeout_get, | |
494 | idle_timeout_set, "%llu\n"); | |
495 | ||
c982b2ea JH |
496 | static int rpa_timeout_set(void *data, u64 val) |
497 | { | |
498 | struct hci_dev *hdev = data; | |
499 | ||
500 | /* Require the RPA timeout to be at least 30 seconds and at most | |
501 | * 24 hours. | |
502 | */ | |
503 | if (val < 30 || val > (60 * 60 * 24)) | |
504 | return -EINVAL; | |
505 | ||
506 | hci_dev_lock(hdev); | |
507 | hdev->rpa_timeout = val; | |
508 | hci_dev_unlock(hdev); | |
509 | ||
510 | return 0; | |
511 | } | |
512 | ||
513 | static int rpa_timeout_get(void *data, u64 *val) | |
514 | { | |
515 | struct hci_dev *hdev = data; | |
516 | ||
517 | hci_dev_lock(hdev); | |
518 | *val = hdev->rpa_timeout; | |
519 | hci_dev_unlock(hdev); | |
520 | ||
521 | return 0; | |
522 | } | |
523 | ||
524 | DEFINE_SIMPLE_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get, | |
525 | rpa_timeout_set, "%llu\n"); | |
526 | ||
2bfa3531 MH |
527 | static int sniff_min_interval_set(void *data, u64 val) |
528 | { | |
529 | struct hci_dev *hdev = data; | |
530 | ||
531 | if (val == 0 || val % 2 || val > hdev->sniff_max_interval) | |
532 | return -EINVAL; | |
533 | ||
534 | hci_dev_lock(hdev); | |
2be48b65 | 535 | hdev->sniff_min_interval = val; |
2bfa3531 MH |
536 | hci_dev_unlock(hdev); |
537 | ||
538 | return 0; | |
539 | } | |
540 | ||
541 | static int sniff_min_interval_get(void *data, u64 *val) | |
542 | { | |
543 | struct hci_dev *hdev = data; | |
544 | ||
545 | hci_dev_lock(hdev); | |
546 | *val = hdev->sniff_min_interval; | |
547 | hci_dev_unlock(hdev); | |
548 | ||
549 | return 0; | |
550 | } | |
551 | ||
552 | DEFINE_SIMPLE_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get, | |
553 | sniff_min_interval_set, "%llu\n"); | |
554 | ||
555 | static int sniff_max_interval_set(void *data, u64 val) | |
556 | { | |
557 | struct hci_dev *hdev = data; | |
558 | ||
559 | if (val == 0 || val % 2 || val < hdev->sniff_min_interval) | |
560 | return -EINVAL; | |
561 | ||
562 | hci_dev_lock(hdev); | |
2be48b65 | 563 | hdev->sniff_max_interval = val; |
2bfa3531 MH |
564 | hci_dev_unlock(hdev); |
565 | ||
566 | return 0; | |
567 | } | |
568 | ||
569 | static int sniff_max_interval_get(void *data, u64 *val) | |
570 | { | |
571 | struct hci_dev *hdev = data; | |
572 | ||
573 | hci_dev_lock(hdev); | |
574 | *val = hdev->sniff_max_interval; | |
575 | hci_dev_unlock(hdev); | |
576 | ||
577 | return 0; | |
578 | } | |
579 | ||
580 | DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get, | |
581 | sniff_max_interval_set, "%llu\n"); | |
582 | ||
31ad1691 AK |
583 | static int conn_info_min_age_set(void *data, u64 val) |
584 | { | |
585 | struct hci_dev *hdev = data; | |
586 | ||
587 | if (val == 0 || val > hdev->conn_info_max_age) | |
588 | return -EINVAL; | |
589 | ||
590 | hci_dev_lock(hdev); | |
591 | hdev->conn_info_min_age = val; | |
592 | hci_dev_unlock(hdev); | |
593 | ||
594 | return 0; | |
595 | } | |
596 | ||
597 | static int conn_info_min_age_get(void *data, u64 *val) | |
598 | { | |
599 | struct hci_dev *hdev = data; | |
600 | ||
601 | hci_dev_lock(hdev); | |
602 | *val = hdev->conn_info_min_age; | |
603 | hci_dev_unlock(hdev); | |
604 | ||
605 | return 0; | |
606 | } | |
607 | ||
608 | DEFINE_SIMPLE_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get, | |
609 | conn_info_min_age_set, "%llu\n"); | |
610 | ||
611 | static int conn_info_max_age_set(void *data, u64 val) | |
612 | { | |
613 | struct hci_dev *hdev = data; | |
614 | ||
615 | if (val == 0 || val < hdev->conn_info_min_age) | |
616 | return -EINVAL; | |
617 | ||
618 | hci_dev_lock(hdev); | |
619 | hdev->conn_info_max_age = val; | |
620 | hci_dev_unlock(hdev); | |
621 | ||
622 | return 0; | |
623 | } | |
624 | ||
625 | static int conn_info_max_age_get(void *data, u64 *val) | |
626 | { | |
627 | struct hci_dev *hdev = data; | |
628 | ||
629 | hci_dev_lock(hdev); | |
630 | *val = hdev->conn_info_max_age; | |
631 | hci_dev_unlock(hdev); | |
632 | ||
633 | return 0; | |
634 | } | |
635 | ||
636 | DEFINE_SIMPLE_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get, | |
637 | conn_info_max_age_set, "%llu\n"); | |
638 | ||
ac345813 MH |
639 | static int identity_show(struct seq_file *f, void *p) |
640 | { | |
641 | struct hci_dev *hdev = f->private; | |
a1f4c318 | 642 | bdaddr_t addr; |
ac345813 MH |
643 | u8 addr_type; |
644 | ||
645 | hci_dev_lock(hdev); | |
646 | ||
a1f4c318 | 647 | hci_copy_identity_address(hdev, &addr, &addr_type); |
ac345813 | 648 | |
a1f4c318 | 649 | seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type, |
473deef2 | 650 | 16, hdev->irk, &hdev->rpa); |
ac345813 MH |
651 | |
652 | hci_dev_unlock(hdev); | |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
657 | static int identity_open(struct inode *inode, struct file *file) | |
658 | { | |
659 | return single_open(file, identity_show, inode->i_private); | |
660 | } | |
661 | ||
662 | static const struct file_operations identity_fops = { | |
663 | .open = identity_open, | |
664 | .read = seq_read, | |
665 | .llseek = seq_lseek, | |
666 | .release = single_release, | |
667 | }; | |
668 | ||
7a4cd51d MH |
669 | static int random_address_show(struct seq_file *f, void *p) |
670 | { | |
671 | struct hci_dev *hdev = f->private; | |
672 | ||
673 | hci_dev_lock(hdev); | |
674 | seq_printf(f, "%pMR\n", &hdev->random_addr); | |
675 | hci_dev_unlock(hdev); | |
676 | ||
677 | return 0; | |
678 | } | |
679 | ||
680 | static int random_address_open(struct inode *inode, struct file *file) | |
681 | { | |
682 | return single_open(file, random_address_show, inode->i_private); | |
683 | } | |
684 | ||
685 | static const struct file_operations random_address_fops = { | |
686 | .open = random_address_open, | |
687 | .read = seq_read, | |
688 | .llseek = seq_lseek, | |
689 | .release = single_release, | |
690 | }; | |
691 | ||
e7b8fc92 MH |
692 | static int static_address_show(struct seq_file *f, void *p) |
693 | { | |
694 | struct hci_dev *hdev = f->private; | |
695 | ||
696 | hci_dev_lock(hdev); | |
697 | seq_printf(f, "%pMR\n", &hdev->static_addr); | |
698 | hci_dev_unlock(hdev); | |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
703 | static int static_address_open(struct inode *inode, struct file *file) | |
704 | { | |
705 | return single_open(file, static_address_show, inode->i_private); | |
706 | } | |
707 | ||
708 | static const struct file_operations static_address_fops = { | |
709 | .open = static_address_open, | |
710 | .read = seq_read, | |
711 | .llseek = seq_lseek, | |
712 | .release = single_release, | |
713 | }; | |
714 | ||
b32bba6c MH |
715 | static ssize_t force_static_address_read(struct file *file, |
716 | char __user *user_buf, | |
717 | size_t count, loff_t *ppos) | |
92202185 | 718 | { |
b32bba6c MH |
719 | struct hci_dev *hdev = file->private_data; |
720 | char buf[3]; | |
92202185 | 721 | |
b32bba6c MH |
722 | buf[0] = test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags) ? 'Y': 'N'; |
723 | buf[1] = '\n'; | |
724 | buf[2] = '\0'; | |
725 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
92202185 MH |
726 | } |
727 | ||
b32bba6c MH |
728 | static ssize_t force_static_address_write(struct file *file, |
729 | const char __user *user_buf, | |
730 | size_t count, loff_t *ppos) | |
92202185 | 731 | { |
b32bba6c MH |
732 | struct hci_dev *hdev = file->private_data; |
733 | char buf[32]; | |
734 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
735 | bool enable; | |
92202185 | 736 | |
b32bba6c MH |
737 | if (test_bit(HCI_UP, &hdev->flags)) |
738 | return -EBUSY; | |
92202185 | 739 | |
b32bba6c MH |
740 | if (copy_from_user(buf, user_buf, buf_size)) |
741 | return -EFAULT; | |
742 | ||
743 | buf[buf_size] = '\0'; | |
744 | if (strtobool(buf, &enable)) | |
745 | return -EINVAL; | |
746 | ||
747 | if (enable == test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags)) | |
748 | return -EALREADY; | |
749 | ||
750 | change_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags); | |
751 | ||
752 | return count; | |
92202185 MH |
753 | } |
754 | ||
b32bba6c MH |
755 | static const struct file_operations force_static_address_fops = { |
756 | .open = simple_open, | |
757 | .read = force_static_address_read, | |
758 | .write = force_static_address_write, | |
759 | .llseek = default_llseek, | |
760 | }; | |
92202185 | 761 | |
d2ab0ac1 MH |
762 | static int white_list_show(struct seq_file *f, void *ptr) |
763 | { | |
764 | struct hci_dev *hdev = f->private; | |
765 | struct bdaddr_list *b; | |
766 | ||
767 | hci_dev_lock(hdev); | |
768 | list_for_each_entry(b, &hdev->le_white_list, list) | |
769 | seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type); | |
770 | hci_dev_unlock(hdev); | |
771 | ||
772 | return 0; | |
773 | } | |
774 | ||
775 | static int white_list_open(struct inode *inode, struct file *file) | |
776 | { | |
777 | return single_open(file, white_list_show, inode->i_private); | |
778 | } | |
779 | ||
780 | static const struct file_operations white_list_fops = { | |
781 | .open = white_list_open, | |
782 | .read = seq_read, | |
783 | .llseek = seq_lseek, | |
784 | .release = single_release, | |
785 | }; | |
786 | ||
3698d704 MH |
787 | static int identity_resolving_keys_show(struct seq_file *f, void *ptr) |
788 | { | |
789 | struct hci_dev *hdev = f->private; | |
790 | struct list_head *p, *n; | |
791 | ||
792 | hci_dev_lock(hdev); | |
793 | list_for_each_safe(p, n, &hdev->identity_resolving_keys) { | |
794 | struct smp_irk *irk = list_entry(p, struct smp_irk, list); | |
795 | seq_printf(f, "%pMR (type %u) %*phN %pMR\n", | |
796 | &irk->bdaddr, irk->addr_type, | |
797 | 16, irk->val, &irk->rpa); | |
798 | } | |
799 | hci_dev_unlock(hdev); | |
800 | ||
801 | return 0; | |
802 | } | |
803 | ||
804 | static int identity_resolving_keys_open(struct inode *inode, struct file *file) | |
805 | { | |
806 | return single_open(file, identity_resolving_keys_show, | |
807 | inode->i_private); | |
808 | } | |
809 | ||
810 | static const struct file_operations identity_resolving_keys_fops = { | |
811 | .open = identity_resolving_keys_open, | |
812 | .read = seq_read, | |
813 | .llseek = seq_lseek, | |
814 | .release = single_release, | |
815 | }; | |
816 | ||
8f8625cd MH |
817 | static int long_term_keys_show(struct seq_file *f, void *ptr) |
818 | { | |
819 | struct hci_dev *hdev = f->private; | |
820 | struct list_head *p, *n; | |
821 | ||
822 | hci_dev_lock(hdev); | |
f813f1be | 823 | list_for_each_safe(p, n, &hdev->long_term_keys) { |
8f8625cd | 824 | struct smp_ltk *ltk = list_entry(p, struct smp_ltk, list); |
fe39c7b2 | 825 | seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n", |
8f8625cd MH |
826 | <k->bdaddr, ltk->bdaddr_type, ltk->authenticated, |
827 | ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv), | |
fe39c7b2 | 828 | __le64_to_cpu(ltk->rand), 16, ltk->val); |
8f8625cd MH |
829 | } |
830 | hci_dev_unlock(hdev); | |
831 | ||
832 | return 0; | |
833 | } | |
834 | ||
835 | static int long_term_keys_open(struct inode *inode, struct file *file) | |
836 | { | |
837 | return single_open(file, long_term_keys_show, inode->i_private); | |
838 | } | |
839 | ||
840 | static const struct file_operations long_term_keys_fops = { | |
841 | .open = long_term_keys_open, | |
842 | .read = seq_read, | |
843 | .llseek = seq_lseek, | |
844 | .release = single_release, | |
845 | }; | |
846 | ||
4e70c7e7 MH |
847 | static int conn_min_interval_set(void *data, u64 val) |
848 | { | |
849 | struct hci_dev *hdev = data; | |
850 | ||
851 | if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval) | |
852 | return -EINVAL; | |
853 | ||
854 | hci_dev_lock(hdev); | |
2be48b65 | 855 | hdev->le_conn_min_interval = val; |
4e70c7e7 MH |
856 | hci_dev_unlock(hdev); |
857 | ||
858 | return 0; | |
859 | } | |
860 | ||
861 | static int conn_min_interval_get(void *data, u64 *val) | |
862 | { | |
863 | struct hci_dev *hdev = data; | |
864 | ||
865 | hci_dev_lock(hdev); | |
866 | *val = hdev->le_conn_min_interval; | |
867 | hci_dev_unlock(hdev); | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
872 | DEFINE_SIMPLE_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get, | |
873 | conn_min_interval_set, "%llu\n"); | |
874 | ||
875 | static int conn_max_interval_set(void *data, u64 val) | |
876 | { | |
877 | struct hci_dev *hdev = data; | |
878 | ||
879 | if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval) | |
880 | return -EINVAL; | |
881 | ||
882 | hci_dev_lock(hdev); | |
2be48b65 | 883 | hdev->le_conn_max_interval = val; |
4e70c7e7 MH |
884 | hci_dev_unlock(hdev); |
885 | ||
886 | return 0; | |
887 | } | |
888 | ||
889 | static int conn_max_interval_get(void *data, u64 *val) | |
890 | { | |
891 | struct hci_dev *hdev = data; | |
892 | ||
893 | hci_dev_lock(hdev); | |
894 | *val = hdev->le_conn_max_interval; | |
895 | hci_dev_unlock(hdev); | |
896 | ||
897 | return 0; | |
898 | } | |
899 | ||
900 | DEFINE_SIMPLE_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get, | |
901 | conn_max_interval_set, "%llu\n"); | |
902 | ||
3f959d46 MH |
903 | static int adv_channel_map_set(void *data, u64 val) |
904 | { | |
905 | struct hci_dev *hdev = data; | |
906 | ||
907 | if (val < 0x01 || val > 0x07) | |
908 | return -EINVAL; | |
909 | ||
910 | hci_dev_lock(hdev); | |
911 | hdev->le_adv_channel_map = val; | |
912 | hci_dev_unlock(hdev); | |
913 | ||
914 | return 0; | |
915 | } | |
916 | ||
917 | static int adv_channel_map_get(void *data, u64 *val) | |
918 | { | |
919 | struct hci_dev *hdev = data; | |
920 | ||
921 | hci_dev_lock(hdev); | |
922 | *val = hdev->le_adv_channel_map; | |
923 | hci_dev_unlock(hdev); | |
924 | ||
925 | return 0; | |
926 | } | |
927 | ||
928 | DEFINE_SIMPLE_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get, | |
929 | adv_channel_map_set, "%llu\n"); | |
930 | ||
89863109 JR |
931 | static ssize_t lowpan_read(struct file *file, char __user *user_buf, |
932 | size_t count, loff_t *ppos) | |
933 | { | |
934 | struct hci_dev *hdev = file->private_data; | |
935 | char buf[3]; | |
936 | ||
937 | buf[0] = test_bit(HCI_6LOWPAN_ENABLED, &hdev->dev_flags) ? 'Y' : 'N'; | |
938 | buf[1] = '\n'; | |
939 | buf[2] = '\0'; | |
940 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
941 | } | |
942 | ||
943 | static ssize_t lowpan_write(struct file *fp, const char __user *user_buffer, | |
944 | size_t count, loff_t *position) | |
945 | { | |
946 | struct hci_dev *hdev = fp->private_data; | |
947 | bool enable; | |
948 | char buf[32]; | |
949 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
950 | ||
951 | if (copy_from_user(buf, user_buffer, buf_size)) | |
952 | return -EFAULT; | |
953 | ||
954 | buf[buf_size] = '\0'; | |
955 | ||
956 | if (strtobool(buf, &enable) < 0) | |
957 | return -EINVAL; | |
958 | ||
959 | if (enable == test_bit(HCI_6LOWPAN_ENABLED, &hdev->dev_flags)) | |
960 | return -EALREADY; | |
961 | ||
962 | change_bit(HCI_6LOWPAN_ENABLED, &hdev->dev_flags); | |
963 | ||
964 | return count; | |
965 | } | |
966 | ||
967 | static const struct file_operations lowpan_debugfs_fops = { | |
968 | .open = simple_open, | |
969 | .read = lowpan_read, | |
970 | .write = lowpan_write, | |
971 | .llseek = default_llseek, | |
972 | }; | |
973 | ||
7d474e06 AG |
974 | static int le_auto_conn_show(struct seq_file *sf, void *ptr) |
975 | { | |
976 | struct hci_dev *hdev = sf->private; | |
977 | struct hci_conn_params *p; | |
978 | ||
979 | hci_dev_lock(hdev); | |
980 | ||
981 | list_for_each_entry(p, &hdev->le_conn_params, list) { | |
982 | seq_printf(sf, "%pMR %u %u\n", &p->addr, p->addr_type, | |
983 | p->auto_connect); | |
984 | } | |
985 | ||
986 | hci_dev_unlock(hdev); | |
987 | ||
988 | return 0; | |
989 | } | |
990 | ||
991 | static int le_auto_conn_open(struct inode *inode, struct file *file) | |
992 | { | |
993 | return single_open(file, le_auto_conn_show, inode->i_private); | |
994 | } | |
995 | ||
996 | static ssize_t le_auto_conn_write(struct file *file, const char __user *data, | |
997 | size_t count, loff_t *offset) | |
998 | { | |
999 | struct seq_file *sf = file->private_data; | |
1000 | struct hci_dev *hdev = sf->private; | |
1001 | u8 auto_connect = 0; | |
1002 | bdaddr_t addr; | |
1003 | u8 addr_type; | |
1004 | char *buf; | |
1005 | int err = 0; | |
1006 | int n; | |
1007 | ||
1008 | /* Don't allow partial write */ | |
1009 | if (*offset != 0) | |
1010 | return -EINVAL; | |
1011 | ||
1012 | if (count < 3) | |
1013 | return -EINVAL; | |
1014 | ||
4408dd15 AG |
1015 | buf = memdup_user(data, count); |
1016 | if (IS_ERR(buf)) | |
1017 | return PTR_ERR(buf); | |
7d474e06 AG |
1018 | |
1019 | if (memcmp(buf, "add", 3) == 0) { | |
1020 | n = sscanf(&buf[4], "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx %hhu %hhu", | |
1021 | &addr.b[5], &addr.b[4], &addr.b[3], &addr.b[2], | |
1022 | &addr.b[1], &addr.b[0], &addr_type, | |
1023 | &auto_connect); | |
1024 | ||
1025 | if (n < 7) { | |
1026 | err = -EINVAL; | |
1027 | goto done; | |
1028 | } | |
1029 | ||
1030 | hci_dev_lock(hdev); | |
1031 | err = hci_conn_params_add(hdev, &addr, addr_type, auto_connect, | |
1032 | hdev->le_conn_min_interval, | |
1033 | hdev->le_conn_max_interval); | |
1034 | hci_dev_unlock(hdev); | |
1035 | ||
1036 | if (err) | |
1037 | goto done; | |
1038 | } else if (memcmp(buf, "del", 3) == 0) { | |
1039 | n = sscanf(&buf[4], "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx %hhu", | |
1040 | &addr.b[5], &addr.b[4], &addr.b[3], &addr.b[2], | |
1041 | &addr.b[1], &addr.b[0], &addr_type); | |
1042 | ||
1043 | if (n < 7) { | |
1044 | err = -EINVAL; | |
1045 | goto done; | |
1046 | } | |
1047 | ||
1048 | hci_dev_lock(hdev); | |
1049 | hci_conn_params_del(hdev, &addr, addr_type); | |
1050 | hci_dev_unlock(hdev); | |
1051 | } else if (memcmp(buf, "clr", 3) == 0) { | |
1052 | hci_dev_lock(hdev); | |
1053 | hci_conn_params_clear(hdev); | |
1054 | hci_pend_le_conns_clear(hdev); | |
1055 | hci_update_background_scan(hdev); | |
1056 | hci_dev_unlock(hdev); | |
1057 | } else { | |
1058 | err = -EINVAL; | |
1059 | } | |
1060 | ||
1061 | done: | |
1062 | kfree(buf); | |
1063 | ||
1064 | if (err) | |
1065 | return err; | |
1066 | else | |
1067 | return count; | |
1068 | } | |
1069 | ||
1070 | static const struct file_operations le_auto_conn_fops = { | |
1071 | .open = le_auto_conn_open, | |
1072 | .read = seq_read, | |
1073 | .write = le_auto_conn_write, | |
1074 | .llseek = seq_lseek, | |
1075 | .release = single_release, | |
1076 | }; | |
1077 | ||
1da177e4 LT |
1078 | /* ---- HCI requests ---- */ |
1079 | ||
42c6b129 | 1080 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result) |
1da177e4 | 1081 | { |
42c6b129 | 1082 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
1da177e4 LT |
1083 | |
1084 | if (hdev->req_status == HCI_REQ_PEND) { | |
1085 | hdev->req_result = result; | |
1086 | hdev->req_status = HCI_REQ_DONE; | |
1087 | wake_up_interruptible(&hdev->req_wait_q); | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
1092 | { | |
1093 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
1094 | ||
1095 | if (hdev->req_status == HCI_REQ_PEND) { | |
1096 | hdev->req_result = err; | |
1097 | hdev->req_status = HCI_REQ_CANCELED; | |
1098 | wake_up_interruptible(&hdev->req_wait_q); | |
1099 | } | |
1100 | } | |
1101 | ||
77a63e0a FW |
1102 | static struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, |
1103 | u8 event) | |
75e84b7c JH |
1104 | { |
1105 | struct hci_ev_cmd_complete *ev; | |
1106 | struct hci_event_hdr *hdr; | |
1107 | struct sk_buff *skb; | |
1108 | ||
1109 | hci_dev_lock(hdev); | |
1110 | ||
1111 | skb = hdev->recv_evt; | |
1112 | hdev->recv_evt = NULL; | |
1113 | ||
1114 | hci_dev_unlock(hdev); | |
1115 | ||
1116 | if (!skb) | |
1117 | return ERR_PTR(-ENODATA); | |
1118 | ||
1119 | if (skb->len < sizeof(*hdr)) { | |
1120 | BT_ERR("Too short HCI event"); | |
1121 | goto failed; | |
1122 | } | |
1123 | ||
1124 | hdr = (void *) skb->data; | |
1125 | skb_pull(skb, HCI_EVENT_HDR_SIZE); | |
1126 | ||
7b1abbbe JH |
1127 | if (event) { |
1128 | if (hdr->evt != event) | |
1129 | goto failed; | |
1130 | return skb; | |
1131 | } | |
1132 | ||
75e84b7c JH |
1133 | if (hdr->evt != HCI_EV_CMD_COMPLETE) { |
1134 | BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt); | |
1135 | goto failed; | |
1136 | } | |
1137 | ||
1138 | if (skb->len < sizeof(*ev)) { | |
1139 | BT_ERR("Too short cmd_complete event"); | |
1140 | goto failed; | |
1141 | } | |
1142 | ||
1143 | ev = (void *) skb->data; | |
1144 | skb_pull(skb, sizeof(*ev)); | |
1145 | ||
1146 | if (opcode == __le16_to_cpu(ev->opcode)) | |
1147 | return skb; | |
1148 | ||
1149 | BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, | |
1150 | __le16_to_cpu(ev->opcode)); | |
1151 | ||
1152 | failed: | |
1153 | kfree_skb(skb); | |
1154 | return ERR_PTR(-ENODATA); | |
1155 | } | |
1156 | ||
7b1abbbe | 1157 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
07dc93dd | 1158 | const void *param, u8 event, u32 timeout) |
75e84b7c JH |
1159 | { |
1160 | DECLARE_WAITQUEUE(wait, current); | |
1161 | struct hci_request req; | |
1162 | int err = 0; | |
1163 | ||
1164 | BT_DBG("%s", hdev->name); | |
1165 | ||
1166 | hci_req_init(&req, hdev); | |
1167 | ||
7b1abbbe | 1168 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
1169 | |
1170 | hdev->req_status = HCI_REQ_PEND; | |
1171 | ||
1172 | err = hci_req_run(&req, hci_req_sync_complete); | |
1173 | if (err < 0) | |
1174 | return ERR_PTR(err); | |
1175 | ||
1176 | add_wait_queue(&hdev->req_wait_q, &wait); | |
1177 | set_current_state(TASK_INTERRUPTIBLE); | |
1178 | ||
1179 | schedule_timeout(timeout); | |
1180 | ||
1181 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
1182 | ||
1183 | if (signal_pending(current)) | |
1184 | return ERR_PTR(-EINTR); | |
1185 | ||
1186 | switch (hdev->req_status) { | |
1187 | case HCI_REQ_DONE: | |
1188 | err = -bt_to_errno(hdev->req_result); | |
1189 | break; | |
1190 | ||
1191 | case HCI_REQ_CANCELED: | |
1192 | err = -hdev->req_result; | |
1193 | break; | |
1194 | ||
1195 | default: | |
1196 | err = -ETIMEDOUT; | |
1197 | break; | |
1198 | } | |
1199 | ||
1200 | hdev->req_status = hdev->req_result = 0; | |
1201 | ||
1202 | BT_DBG("%s end: err %d", hdev->name, err); | |
1203 | ||
1204 | if (err < 0) | |
1205 | return ERR_PTR(err); | |
1206 | ||
7b1abbbe JH |
1207 | return hci_get_cmd_complete(hdev, opcode, event); |
1208 | } | |
1209 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
1210 | ||
1211 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
07dc93dd | 1212 | const void *param, u32 timeout) |
7b1abbbe JH |
1213 | { |
1214 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
1215 | } |
1216 | EXPORT_SYMBOL(__hci_cmd_sync); | |
1217 | ||
1da177e4 | 1218 | /* Execute request and wait for completion. */ |
01178cd4 | 1219 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
1220 | void (*func)(struct hci_request *req, |
1221 | unsigned long opt), | |
01178cd4 | 1222 | unsigned long opt, __u32 timeout) |
1da177e4 | 1223 | { |
42c6b129 | 1224 | struct hci_request req; |
1da177e4 LT |
1225 | DECLARE_WAITQUEUE(wait, current); |
1226 | int err = 0; | |
1227 | ||
1228 | BT_DBG("%s start", hdev->name); | |
1229 | ||
42c6b129 JH |
1230 | hci_req_init(&req, hdev); |
1231 | ||
1da177e4 LT |
1232 | hdev->req_status = HCI_REQ_PEND; |
1233 | ||
42c6b129 | 1234 | func(&req, opt); |
53cce22d | 1235 | |
42c6b129 JH |
1236 | err = hci_req_run(&req, hci_req_sync_complete); |
1237 | if (err < 0) { | |
53cce22d | 1238 | hdev->req_status = 0; |
920c8300 AG |
1239 | |
1240 | /* ENODATA means the HCI request command queue is empty. | |
1241 | * This can happen when a request with conditionals doesn't | |
1242 | * trigger any commands to be sent. This is normal behavior | |
1243 | * and should not trigger an error return. | |
42c6b129 | 1244 | */ |
920c8300 AG |
1245 | if (err == -ENODATA) |
1246 | return 0; | |
1247 | ||
1248 | return err; | |
53cce22d JH |
1249 | } |
1250 | ||
bc4445c7 AG |
1251 | add_wait_queue(&hdev->req_wait_q, &wait); |
1252 | set_current_state(TASK_INTERRUPTIBLE); | |
1253 | ||
1da177e4 LT |
1254 | schedule_timeout(timeout); |
1255 | ||
1256 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
1257 | ||
1258 | if (signal_pending(current)) | |
1259 | return -EINTR; | |
1260 | ||
1261 | switch (hdev->req_status) { | |
1262 | case HCI_REQ_DONE: | |
e175072f | 1263 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
1264 | break; |
1265 | ||
1266 | case HCI_REQ_CANCELED: | |
1267 | err = -hdev->req_result; | |
1268 | break; | |
1269 | ||
1270 | default: | |
1271 | err = -ETIMEDOUT; | |
1272 | break; | |
3ff50b79 | 1273 | } |
1da177e4 | 1274 | |
a5040efa | 1275 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
1276 | |
1277 | BT_DBG("%s end: err %d", hdev->name, err); | |
1278 | ||
1279 | return err; | |
1280 | } | |
1281 | ||
01178cd4 | 1282 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
1283 | void (*req)(struct hci_request *req, |
1284 | unsigned long opt), | |
01178cd4 | 1285 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
1286 | { |
1287 | int ret; | |
1288 | ||
7c6a329e MH |
1289 | if (!test_bit(HCI_UP, &hdev->flags)) |
1290 | return -ENETDOWN; | |
1291 | ||
1da177e4 LT |
1292 | /* Serialize all requests */ |
1293 | hci_req_lock(hdev); | |
01178cd4 | 1294 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
1295 | hci_req_unlock(hdev); |
1296 | ||
1297 | return ret; | |
1298 | } | |
1299 | ||
42c6b129 | 1300 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 1301 | { |
42c6b129 | 1302 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
1303 | |
1304 | /* Reset device */ | |
42c6b129 JH |
1305 | set_bit(HCI_RESET, &req->hdev->flags); |
1306 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
1307 | } |
1308 | ||
42c6b129 | 1309 | static void bredr_init(struct hci_request *req) |
1da177e4 | 1310 | { |
42c6b129 | 1311 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 1312 | |
1da177e4 | 1313 | /* Read Local Supported Features */ |
42c6b129 | 1314 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 1315 | |
1143e5a6 | 1316 | /* Read Local Version */ |
42c6b129 | 1317 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
1318 | |
1319 | /* Read BD Address */ | |
42c6b129 | 1320 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
1321 | } |
1322 | ||
42c6b129 | 1323 | static void amp_init(struct hci_request *req) |
e61ef499 | 1324 | { |
42c6b129 | 1325 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 1326 | |
e61ef499 | 1327 | /* Read Local Version */ |
42c6b129 | 1328 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 1329 | |
f6996cfe MH |
1330 | /* Read Local Supported Commands */ |
1331 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
1332 | ||
1333 | /* Read Local Supported Features */ | |
1334 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
1335 | ||
6bcbc489 | 1336 | /* Read Local AMP Info */ |
42c6b129 | 1337 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
1338 | |
1339 | /* Read Data Blk size */ | |
42c6b129 | 1340 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 1341 | |
f38ba941 MH |
1342 | /* Read Flow Control Mode */ |
1343 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
1344 | ||
7528ca1c MH |
1345 | /* Read Location Data */ |
1346 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
1347 | } |
1348 | ||
42c6b129 | 1349 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 1350 | { |
42c6b129 | 1351 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
1352 | |
1353 | BT_DBG("%s %ld", hdev->name, opt); | |
1354 | ||
11778716 AE |
1355 | /* Reset */ |
1356 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 1357 | hci_reset_req(req, 0); |
11778716 | 1358 | |
e61ef499 AE |
1359 | switch (hdev->dev_type) { |
1360 | case HCI_BREDR: | |
42c6b129 | 1361 | bredr_init(req); |
e61ef499 AE |
1362 | break; |
1363 | ||
1364 | case HCI_AMP: | |
42c6b129 | 1365 | amp_init(req); |
e61ef499 AE |
1366 | break; |
1367 | ||
1368 | default: | |
1369 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
1370 | break; | |
1371 | } | |
e61ef499 AE |
1372 | } |
1373 | ||
42c6b129 | 1374 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 1375 | { |
4ca048e3 MH |
1376 | struct hci_dev *hdev = req->hdev; |
1377 | ||
2177bab5 JH |
1378 | __le16 param; |
1379 | __u8 flt_type; | |
1380 | ||
1381 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 1382 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
1383 | |
1384 | /* Read Class of Device */ | |
42c6b129 | 1385 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
1386 | |
1387 | /* Read Local Name */ | |
42c6b129 | 1388 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
1389 | |
1390 | /* Read Voice Setting */ | |
42c6b129 | 1391 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 1392 | |
b4cb9fb2 MH |
1393 | /* Read Number of Supported IAC */ |
1394 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
1395 | ||
4b836f39 MH |
1396 | /* Read Current IAC LAP */ |
1397 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
1398 | ||
2177bab5 JH |
1399 | /* Clear Event Filters */ |
1400 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 1401 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
1402 | |
1403 | /* Connection accept timeout ~20 secs */ | |
dcf4adbf | 1404 | param = cpu_to_le16(0x7d00); |
42c6b129 | 1405 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 | 1406 | |
4ca048e3 MH |
1407 | /* AVM Berlin (31), aka "BlueFRITZ!", reports version 1.2, |
1408 | * but it does not support page scan related HCI commands. | |
1409 | */ | |
1410 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) { | |
f332ec66 JH |
1411 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); |
1412 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
1413 | } | |
2177bab5 JH |
1414 | } |
1415 | ||
42c6b129 | 1416 | static void le_setup(struct hci_request *req) |
2177bab5 | 1417 | { |
c73eee91 JH |
1418 | struct hci_dev *hdev = req->hdev; |
1419 | ||
2177bab5 | 1420 | /* Read LE Buffer Size */ |
42c6b129 | 1421 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
1422 | |
1423 | /* Read LE Local Supported Features */ | |
42c6b129 | 1424 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 | 1425 | |
747d3f03 MH |
1426 | /* Read LE Supported States */ |
1427 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); | |
1428 | ||
2177bab5 | 1429 | /* Read LE Advertising Channel TX Power */ |
42c6b129 | 1430 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); |
2177bab5 JH |
1431 | |
1432 | /* Read LE White List Size */ | |
42c6b129 | 1433 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 | 1434 | |
747d3f03 MH |
1435 | /* Clear LE White List */ |
1436 | hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL); | |
c73eee91 JH |
1437 | |
1438 | /* LE-only controllers have LE implicitly enabled */ | |
1439 | if (!lmp_bredr_capable(hdev)) | |
1440 | set_bit(HCI_LE_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
1441 | } |
1442 | ||
1443 | static u8 hci_get_inquiry_mode(struct hci_dev *hdev) | |
1444 | { | |
1445 | if (lmp_ext_inq_capable(hdev)) | |
1446 | return 0x02; | |
1447 | ||
1448 | if (lmp_inq_rssi_capable(hdev)) | |
1449 | return 0x01; | |
1450 | ||
1451 | if (hdev->manufacturer == 11 && hdev->hci_rev == 0x00 && | |
1452 | hdev->lmp_subver == 0x0757) | |
1453 | return 0x01; | |
1454 | ||
1455 | if (hdev->manufacturer == 15) { | |
1456 | if (hdev->hci_rev == 0x03 && hdev->lmp_subver == 0x6963) | |
1457 | return 0x01; | |
1458 | if (hdev->hci_rev == 0x09 && hdev->lmp_subver == 0x6963) | |
1459 | return 0x01; | |
1460 | if (hdev->hci_rev == 0x00 && hdev->lmp_subver == 0x6965) | |
1461 | return 0x01; | |
1462 | } | |
1463 | ||
1464 | if (hdev->manufacturer == 31 && hdev->hci_rev == 0x2005 && | |
1465 | hdev->lmp_subver == 0x1805) | |
1466 | return 0x01; | |
1467 | ||
1468 | return 0x00; | |
1469 | } | |
1470 | ||
42c6b129 | 1471 | static void hci_setup_inquiry_mode(struct hci_request *req) |
2177bab5 JH |
1472 | { |
1473 | u8 mode; | |
1474 | ||
42c6b129 | 1475 | mode = hci_get_inquiry_mode(req->hdev); |
2177bab5 | 1476 | |
42c6b129 | 1477 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); |
2177bab5 JH |
1478 | } |
1479 | ||
42c6b129 | 1480 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 1481 | { |
42c6b129 JH |
1482 | struct hci_dev *hdev = req->hdev; |
1483 | ||
2177bab5 JH |
1484 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
1485 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
1486 | * command otherwise. | |
1487 | */ | |
1488 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
1489 | ||
1490 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
1491 | * any event mask for pre 1.2 devices. | |
1492 | */ | |
1493 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
1494 | return; | |
1495 | ||
1496 | if (lmp_bredr_capable(hdev)) { | |
1497 | events[4] |= 0x01; /* Flow Specification Complete */ | |
1498 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
1499 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
1500 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
1501 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
1502 | } else { |
1503 | /* Use a different default for LE-only devices */ | |
1504 | memset(events, 0, sizeof(events)); | |
1505 | events[0] |= 0x10; /* Disconnection Complete */ | |
1506 | events[0] |= 0x80; /* Encryption Change */ | |
1507 | events[1] |= 0x08; /* Read Remote Version Information Complete */ | |
1508 | events[1] |= 0x20; /* Command Complete */ | |
1509 | events[1] |= 0x40; /* Command Status */ | |
1510 | events[1] |= 0x80; /* Hardware Error */ | |
1511 | events[2] |= 0x04; /* Number of Completed Packets */ | |
1512 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
1513 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
2177bab5 JH |
1514 | } |
1515 | ||
1516 | if (lmp_inq_rssi_capable(hdev)) | |
1517 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
1518 | ||
1519 | if (lmp_sniffsubr_capable(hdev)) | |
1520 | events[5] |= 0x20; /* Sniff Subrating */ | |
1521 | ||
1522 | if (lmp_pause_enc_capable(hdev)) | |
1523 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
1524 | ||
1525 | if (lmp_ext_inq_capable(hdev)) | |
1526 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
1527 | ||
1528 | if (lmp_no_flush_capable(hdev)) | |
1529 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
1530 | ||
1531 | if (lmp_lsto_capable(hdev)) | |
1532 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
1533 | ||
1534 | if (lmp_ssp_capable(hdev)) { | |
1535 | events[6] |= 0x01; /* IO Capability Request */ | |
1536 | events[6] |= 0x02; /* IO Capability Response */ | |
1537 | events[6] |= 0x04; /* User Confirmation Request */ | |
1538 | events[6] |= 0x08; /* User Passkey Request */ | |
1539 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
1540 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
1541 | events[7] |= 0x04; /* User Passkey Notification */ | |
1542 | events[7] |= 0x08; /* Keypress Notification */ | |
1543 | events[7] |= 0x10; /* Remote Host Supported | |
1544 | * Features Notification | |
1545 | */ | |
1546 | } | |
1547 | ||
1548 | if (lmp_le_capable(hdev)) | |
1549 | events[7] |= 0x20; /* LE Meta-Event */ | |
1550 | ||
42c6b129 | 1551 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
1552 | |
1553 | if (lmp_le_capable(hdev)) { | |
1554 | memset(events, 0, sizeof(events)); | |
1555 | events[0] = 0x1f; | |
42c6b129 JH |
1556 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, |
1557 | sizeof(events), events); | |
2177bab5 JH |
1558 | } |
1559 | } | |
1560 | ||
42c6b129 | 1561 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 1562 | { |
42c6b129 JH |
1563 | struct hci_dev *hdev = req->hdev; |
1564 | ||
2177bab5 | 1565 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 1566 | bredr_setup(req); |
56f87901 JH |
1567 | else |
1568 | clear_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
1569 | |
1570 | if (lmp_le_capable(hdev)) | |
42c6b129 | 1571 | le_setup(req); |
2177bab5 | 1572 | |
42c6b129 | 1573 | hci_setup_event_mask(req); |
2177bab5 | 1574 | |
3f8e2d75 JH |
1575 | /* AVM Berlin (31), aka "BlueFRITZ!", doesn't support the read |
1576 | * local supported commands HCI command. | |
1577 | */ | |
1578 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) | |
42c6b129 | 1579 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
1580 | |
1581 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
1582 | /* When SSP is available, then the host features page |
1583 | * should also be available as well. However some | |
1584 | * controllers list the max_page as 0 as long as SSP | |
1585 | * has not been enabled. To achieve proper debugging | |
1586 | * output, force the minimum max_page to 1 at least. | |
1587 | */ | |
1588 | hdev->max_page = 0x01; | |
1589 | ||
2177bab5 JH |
1590 | if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) { |
1591 | u8 mode = 0x01; | |
42c6b129 JH |
1592 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
1593 | sizeof(mode), &mode); | |
2177bab5 JH |
1594 | } else { |
1595 | struct hci_cp_write_eir cp; | |
1596 | ||
1597 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
1598 | memset(&cp, 0, sizeof(cp)); | |
1599 | ||
42c6b129 | 1600 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
1601 | } |
1602 | } | |
1603 | ||
1604 | if (lmp_inq_rssi_capable(hdev)) | |
42c6b129 | 1605 | hci_setup_inquiry_mode(req); |
2177bab5 JH |
1606 | |
1607 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 1608 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
1609 | |
1610 | if (lmp_ext_feat_capable(hdev)) { | |
1611 | struct hci_cp_read_local_ext_features cp; | |
1612 | ||
1613 | cp.page = 0x01; | |
42c6b129 JH |
1614 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
1615 | sizeof(cp), &cp); | |
2177bab5 JH |
1616 | } |
1617 | ||
1618 | if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) { | |
1619 | u8 enable = 1; | |
42c6b129 JH |
1620 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
1621 | &enable); | |
2177bab5 JH |
1622 | } |
1623 | } | |
1624 | ||
42c6b129 | 1625 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 1626 | { |
42c6b129 | 1627 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
1628 | struct hci_cp_write_def_link_policy cp; |
1629 | u16 link_policy = 0; | |
1630 | ||
1631 | if (lmp_rswitch_capable(hdev)) | |
1632 | link_policy |= HCI_LP_RSWITCH; | |
1633 | if (lmp_hold_capable(hdev)) | |
1634 | link_policy |= HCI_LP_HOLD; | |
1635 | if (lmp_sniff_capable(hdev)) | |
1636 | link_policy |= HCI_LP_SNIFF; | |
1637 | if (lmp_park_capable(hdev)) | |
1638 | link_policy |= HCI_LP_PARK; | |
1639 | ||
1640 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 1641 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
1642 | } |
1643 | ||
42c6b129 | 1644 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 1645 | { |
42c6b129 | 1646 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
1647 | struct hci_cp_write_le_host_supported cp; |
1648 | ||
c73eee91 JH |
1649 | /* LE-only devices do not support explicit enablement */ |
1650 | if (!lmp_bredr_capable(hdev)) | |
1651 | return; | |
1652 | ||
2177bab5 JH |
1653 | memset(&cp, 0, sizeof(cp)); |
1654 | ||
1655 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { | |
1656 | cp.le = 0x01; | |
1657 | cp.simul = lmp_le_br_capable(hdev); | |
1658 | } | |
1659 | ||
1660 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
1661 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
1662 | &cp); | |
2177bab5 JH |
1663 | } |
1664 | ||
d62e6d67 JH |
1665 | static void hci_set_event_mask_page_2(struct hci_request *req) |
1666 | { | |
1667 | struct hci_dev *hdev = req->hdev; | |
1668 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
1669 | ||
1670 | /* If Connectionless Slave Broadcast master role is supported | |
1671 | * enable all necessary events for it. | |
1672 | */ | |
53b834d2 | 1673 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
1674 | events[1] |= 0x40; /* Triggered Clock Capture */ |
1675 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
1676 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
1677 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
1678 | } | |
1679 | ||
1680 | /* If Connectionless Slave Broadcast slave role is supported | |
1681 | * enable all necessary events for it. | |
1682 | */ | |
53b834d2 | 1683 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
1684 | events[2] |= 0x01; /* Synchronization Train Received */ |
1685 | events[2] |= 0x02; /* CSB Receive */ | |
1686 | events[2] |= 0x04; /* CSB Timeout */ | |
1687 | events[2] |= 0x08; /* Truncated Page Complete */ | |
1688 | } | |
1689 | ||
40c59fcb MH |
1690 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
1691 | if (lmp_ping_capable(hdev)) | |
1692 | events[2] |= 0x80; | |
1693 | ||
d62e6d67 JH |
1694 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
1695 | } | |
1696 | ||
42c6b129 | 1697 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 1698 | { |
42c6b129 | 1699 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 1700 | u8 p; |
42c6b129 | 1701 | |
b8f4e068 GP |
1702 | /* Some Broadcom based Bluetooth controllers do not support the |
1703 | * Delete Stored Link Key command. They are clearly indicating its | |
1704 | * absence in the bit mask of supported commands. | |
1705 | * | |
1706 | * Check the supported commands and only if the the command is marked | |
1707 | * as supported send it. If not supported assume that the controller | |
1708 | * does not have actual support for stored link keys which makes this | |
1709 | * command redundant anyway. | |
f9f462fa MH |
1710 | * |
1711 | * Some controllers indicate that they support handling deleting | |
1712 | * stored link keys, but they don't. The quirk lets a driver | |
1713 | * just disable this command. | |
637b4cae | 1714 | */ |
f9f462fa MH |
1715 | if (hdev->commands[6] & 0x80 && |
1716 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
59f45d57 JH |
1717 | struct hci_cp_delete_stored_link_key cp; |
1718 | ||
1719 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
1720 | cp.delete_all = 0x01; | |
1721 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
1722 | sizeof(cp), &cp); | |
1723 | } | |
1724 | ||
2177bab5 | 1725 | if (hdev->commands[5] & 0x10) |
42c6b129 | 1726 | hci_setup_link_policy(req); |
2177bab5 | 1727 | |
7bf32048 | 1728 | if (lmp_le_capable(hdev)) |
42c6b129 | 1729 | hci_set_le_support(req); |
d2c5d77f JH |
1730 | |
1731 | /* Read features beyond page 1 if available */ | |
1732 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
1733 | struct hci_cp_read_local_ext_features cp; | |
1734 | ||
1735 | cp.page = p; | |
1736 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
1737 | sizeof(cp), &cp); | |
1738 | } | |
2177bab5 JH |
1739 | } |
1740 | ||
5d4e7e8d JH |
1741 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
1742 | { | |
1743 | struct hci_dev *hdev = req->hdev; | |
1744 | ||
d62e6d67 JH |
1745 | /* Set event mask page 2 if the HCI command for it is supported */ |
1746 | if (hdev->commands[22] & 0x04) | |
1747 | hci_set_event_mask_page_2(req); | |
1748 | ||
5d4e7e8d | 1749 | /* Check for Synchronization Train support */ |
53b834d2 | 1750 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 1751 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
1752 | |
1753 | /* Enable Secure Connections if supported and configured */ | |
5afeac14 MH |
1754 | if ((lmp_sc_capable(hdev) || |
1755 | test_bit(HCI_FORCE_SC, &hdev->dev_flags)) && | |
a6d0d690 MH |
1756 | test_bit(HCI_SC_ENABLED, &hdev->dev_flags)) { |
1757 | u8 support = 0x01; | |
1758 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, | |
1759 | sizeof(support), &support); | |
1760 | } | |
5d4e7e8d JH |
1761 | } |
1762 | ||
2177bab5 JH |
1763 | static int __hci_init(struct hci_dev *hdev) |
1764 | { | |
1765 | int err; | |
1766 | ||
1767 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
1768 | if (err < 0) | |
1769 | return err; | |
1770 | ||
4b4148e9 MH |
1771 | /* The Device Under Test (DUT) mode is special and available for |
1772 | * all controller types. So just create it early on. | |
1773 | */ | |
1774 | if (test_bit(HCI_SETUP, &hdev->dev_flags)) { | |
1775 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, | |
1776 | &dut_mode_fops); | |
1777 | } | |
1778 | ||
2177bab5 JH |
1779 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode |
1780 | * BR/EDR/LE type controllers. AMP controllers only need the | |
1781 | * first stage init. | |
1782 | */ | |
1783 | if (hdev->dev_type != HCI_BREDR) | |
1784 | return 0; | |
1785 | ||
1786 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); | |
1787 | if (err < 0) | |
1788 | return err; | |
1789 | ||
5d4e7e8d JH |
1790 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
1791 | if (err < 0) | |
1792 | return err; | |
1793 | ||
baf27f6e MH |
1794 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); |
1795 | if (err < 0) | |
1796 | return err; | |
1797 | ||
1798 | /* Only create debugfs entries during the initial setup | |
1799 | * phase and not every time the controller gets powered on. | |
1800 | */ | |
1801 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) | |
1802 | return 0; | |
1803 | ||
dfb826a8 MH |
1804 | debugfs_create_file("features", 0444, hdev->debugfs, hdev, |
1805 | &features_fops); | |
ceeb3bc0 MH |
1806 | debugfs_create_u16("manufacturer", 0444, hdev->debugfs, |
1807 | &hdev->manufacturer); | |
1808 | debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver); | |
1809 | debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev); | |
70afe0b8 MH |
1810 | debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev, |
1811 | &blacklist_fops); | |
47219839 MH |
1812 | debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops); |
1813 | ||
31ad1691 AK |
1814 | debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev, |
1815 | &conn_info_min_age_fops); | |
1816 | debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev, | |
1817 | &conn_info_max_age_fops); | |
1818 | ||
baf27f6e MH |
1819 | if (lmp_bredr_capable(hdev)) { |
1820 | debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, | |
1821 | hdev, &inquiry_cache_fops); | |
02d08d15 MH |
1822 | debugfs_create_file("link_keys", 0400, hdev->debugfs, |
1823 | hdev, &link_keys_fops); | |
babdbb3c MH |
1824 | debugfs_create_file("dev_class", 0444, hdev->debugfs, |
1825 | hdev, &dev_class_fops); | |
041000b9 MH |
1826 | debugfs_create_file("voice_setting", 0444, hdev->debugfs, |
1827 | hdev, &voice_setting_fops); | |
baf27f6e MH |
1828 | } |
1829 | ||
06f5b778 | 1830 | if (lmp_ssp_capable(hdev)) { |
ebd1e33b MH |
1831 | debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs, |
1832 | hdev, &auto_accept_delay_fops); | |
06f5b778 MH |
1833 | debugfs_create_file("ssp_debug_mode", 0644, hdev->debugfs, |
1834 | hdev, &ssp_debug_mode_fops); | |
5afeac14 MH |
1835 | debugfs_create_file("force_sc_support", 0644, hdev->debugfs, |
1836 | hdev, &force_sc_support_fops); | |
134c2a89 MH |
1837 | debugfs_create_file("sc_only_mode", 0444, hdev->debugfs, |
1838 | hdev, &sc_only_mode_fops); | |
06f5b778 | 1839 | } |
ebd1e33b | 1840 | |
2bfa3531 MH |
1841 | if (lmp_sniff_capable(hdev)) { |
1842 | debugfs_create_file("idle_timeout", 0644, hdev->debugfs, | |
1843 | hdev, &idle_timeout_fops); | |
1844 | debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs, | |
1845 | hdev, &sniff_min_interval_fops); | |
1846 | debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs, | |
1847 | hdev, &sniff_max_interval_fops); | |
1848 | } | |
1849 | ||
d0f729b8 | 1850 | if (lmp_le_capable(hdev)) { |
ac345813 MH |
1851 | debugfs_create_file("identity", 0400, hdev->debugfs, |
1852 | hdev, &identity_fops); | |
1853 | debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, | |
1854 | hdev, &rpa_timeout_fops); | |
7a4cd51d MH |
1855 | debugfs_create_file("random_address", 0444, hdev->debugfs, |
1856 | hdev, &random_address_fops); | |
b32bba6c MH |
1857 | debugfs_create_file("static_address", 0444, hdev->debugfs, |
1858 | hdev, &static_address_fops); | |
1859 | ||
1860 | /* For controllers with a public address, provide a debug | |
1861 | * option to force the usage of the configured static | |
1862 | * address. By default the public address is used. | |
1863 | */ | |
1864 | if (bacmp(&hdev->bdaddr, BDADDR_ANY)) | |
1865 | debugfs_create_file("force_static_address", 0644, | |
1866 | hdev->debugfs, hdev, | |
1867 | &force_static_address_fops); | |
1868 | ||
d0f729b8 MH |
1869 | debugfs_create_u8("white_list_size", 0444, hdev->debugfs, |
1870 | &hdev->le_white_list_size); | |
d2ab0ac1 MH |
1871 | debugfs_create_file("white_list", 0444, hdev->debugfs, hdev, |
1872 | &white_list_fops); | |
3698d704 MH |
1873 | debugfs_create_file("identity_resolving_keys", 0400, |
1874 | hdev->debugfs, hdev, | |
1875 | &identity_resolving_keys_fops); | |
8f8625cd MH |
1876 | debugfs_create_file("long_term_keys", 0400, hdev->debugfs, |
1877 | hdev, &long_term_keys_fops); | |
4e70c7e7 MH |
1878 | debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, |
1879 | hdev, &conn_min_interval_fops); | |
1880 | debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, | |
1881 | hdev, &conn_max_interval_fops); | |
3f959d46 MH |
1882 | debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, |
1883 | hdev, &adv_channel_map_fops); | |
89863109 JR |
1884 | debugfs_create_file("6lowpan", 0644, hdev->debugfs, hdev, |
1885 | &lowpan_debugfs_fops); | |
7d474e06 AG |
1886 | debugfs_create_file("le_auto_conn", 0644, hdev->debugfs, hdev, |
1887 | &le_auto_conn_fops); | |
b9a7a61e LR |
1888 | debugfs_create_u16("discov_interleaved_timeout", 0644, |
1889 | hdev->debugfs, | |
1890 | &hdev->discov_interleaved_timeout); | |
d0f729b8 | 1891 | } |
e7b8fc92 | 1892 | |
baf27f6e | 1893 | return 0; |
2177bab5 JH |
1894 | } |
1895 | ||
42c6b129 | 1896 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1897 | { |
1898 | __u8 scan = opt; | |
1899 | ||
42c6b129 | 1900 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
1901 | |
1902 | /* Inquiry and Page scans */ | |
42c6b129 | 1903 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
1904 | } |
1905 | ||
42c6b129 | 1906 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1907 | { |
1908 | __u8 auth = opt; | |
1909 | ||
42c6b129 | 1910 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
1911 | |
1912 | /* Authentication */ | |
42c6b129 | 1913 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
1914 | } |
1915 | ||
42c6b129 | 1916 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1917 | { |
1918 | __u8 encrypt = opt; | |
1919 | ||
42c6b129 | 1920 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 1921 | |
e4e8e37c | 1922 | /* Encryption */ |
42c6b129 | 1923 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
1924 | } |
1925 | ||
42c6b129 | 1926 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
1927 | { |
1928 | __le16 policy = cpu_to_le16(opt); | |
1929 | ||
42c6b129 | 1930 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
1931 | |
1932 | /* Default link policy */ | |
42c6b129 | 1933 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
1934 | } |
1935 | ||
8e87d142 | 1936 | /* Get HCI device by index. |
1da177e4 LT |
1937 | * Device is held on return. */ |
1938 | struct hci_dev *hci_dev_get(int index) | |
1939 | { | |
8035ded4 | 1940 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
1941 | |
1942 | BT_DBG("%d", index); | |
1943 | ||
1944 | if (index < 0) | |
1945 | return NULL; | |
1946 | ||
1947 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 1948 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
1949 | if (d->id == index) { |
1950 | hdev = hci_dev_hold(d); | |
1951 | break; | |
1952 | } | |
1953 | } | |
1954 | read_unlock(&hci_dev_list_lock); | |
1955 | return hdev; | |
1956 | } | |
1da177e4 LT |
1957 | |
1958 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 1959 | |
30dc78e1 JH |
1960 | bool hci_discovery_active(struct hci_dev *hdev) |
1961 | { | |
1962 | struct discovery_state *discov = &hdev->discovery; | |
1963 | ||
6fbe195d | 1964 | switch (discov->state) { |
343f935b | 1965 | case DISCOVERY_FINDING: |
6fbe195d | 1966 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
1967 | return true; |
1968 | ||
6fbe195d AG |
1969 | default: |
1970 | return false; | |
1971 | } | |
30dc78e1 JH |
1972 | } |
1973 | ||
ff9ef578 JH |
1974 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
1975 | { | |
1976 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); | |
1977 | ||
1978 | if (hdev->discovery.state == state) | |
1979 | return; | |
1980 | ||
1981 | switch (state) { | |
1982 | case DISCOVERY_STOPPED: | |
c54c3860 AG |
1983 | hci_update_background_scan(hdev); |
1984 | ||
7b99b659 AG |
1985 | if (hdev->discovery.state != DISCOVERY_STARTING) |
1986 | mgmt_discovering(hdev, 0); | |
ff9ef578 JH |
1987 | break; |
1988 | case DISCOVERY_STARTING: | |
1989 | break; | |
343f935b | 1990 | case DISCOVERY_FINDING: |
ff9ef578 JH |
1991 | mgmt_discovering(hdev, 1); |
1992 | break; | |
30dc78e1 JH |
1993 | case DISCOVERY_RESOLVING: |
1994 | break; | |
ff9ef578 JH |
1995 | case DISCOVERY_STOPPING: |
1996 | break; | |
1997 | } | |
1998 | ||
1999 | hdev->discovery.state = state; | |
2000 | } | |
2001 | ||
1f9b9a5d | 2002 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 2003 | { |
30883512 | 2004 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 2005 | struct inquiry_entry *p, *n; |
1da177e4 | 2006 | |
561aafbc JH |
2007 | list_for_each_entry_safe(p, n, &cache->all, all) { |
2008 | list_del(&p->all); | |
b57c1a56 | 2009 | kfree(p); |
1da177e4 | 2010 | } |
561aafbc JH |
2011 | |
2012 | INIT_LIST_HEAD(&cache->unknown); | |
2013 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
2014 | } |
2015 | ||
a8c5fb1a GP |
2016 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
2017 | bdaddr_t *bdaddr) | |
1da177e4 | 2018 | { |
30883512 | 2019 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
2020 | struct inquiry_entry *e; |
2021 | ||
6ed93dc6 | 2022 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 2023 | |
561aafbc JH |
2024 | list_for_each_entry(e, &cache->all, all) { |
2025 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
2026 | return e; | |
2027 | } | |
2028 | ||
2029 | return NULL; | |
2030 | } | |
2031 | ||
2032 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 2033 | bdaddr_t *bdaddr) |
561aafbc | 2034 | { |
30883512 | 2035 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
2036 | struct inquiry_entry *e; |
2037 | ||
6ed93dc6 | 2038 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
2039 | |
2040 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 2041 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
2042 | return e; |
2043 | } | |
2044 | ||
2045 | return NULL; | |
1da177e4 LT |
2046 | } |
2047 | ||
30dc78e1 | 2048 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
2049 | bdaddr_t *bdaddr, |
2050 | int state) | |
30dc78e1 JH |
2051 | { |
2052 | struct discovery_state *cache = &hdev->discovery; | |
2053 | struct inquiry_entry *e; | |
2054 | ||
6ed93dc6 | 2055 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
2056 | |
2057 | list_for_each_entry(e, &cache->resolve, list) { | |
2058 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
2059 | return e; | |
2060 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
2061 | return e; | |
2062 | } | |
2063 | ||
2064 | return NULL; | |
2065 | } | |
2066 | ||
a3d4e20a | 2067 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 2068 | struct inquiry_entry *ie) |
a3d4e20a JH |
2069 | { |
2070 | struct discovery_state *cache = &hdev->discovery; | |
2071 | struct list_head *pos = &cache->resolve; | |
2072 | struct inquiry_entry *p; | |
2073 | ||
2074 | list_del(&ie->list); | |
2075 | ||
2076 | list_for_each_entry(p, &cache->resolve, list) { | |
2077 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 2078 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
2079 | break; |
2080 | pos = &p->list; | |
2081 | } | |
2082 | ||
2083 | list_add(&ie->list, pos); | |
2084 | } | |
2085 | ||
3175405b | 2086 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
04124681 | 2087 | bool name_known, bool *ssp) |
1da177e4 | 2088 | { |
30883512 | 2089 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 2090 | struct inquiry_entry *ie; |
1da177e4 | 2091 | |
6ed93dc6 | 2092 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 2093 | |
2b2fec4d SJ |
2094 | hci_remove_remote_oob_data(hdev, &data->bdaddr); |
2095 | ||
01735bbd | 2096 | *ssp = data->ssp_mode; |
388fc8fa | 2097 | |
70f23020 | 2098 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 2099 | if (ie) { |
8002d77c | 2100 | if (ie->data.ssp_mode) |
388fc8fa JH |
2101 | *ssp = true; |
2102 | ||
a3d4e20a | 2103 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 2104 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
2105 | ie->data.rssi = data->rssi; |
2106 | hci_inquiry_cache_update_resolve(hdev, ie); | |
2107 | } | |
2108 | ||
561aafbc | 2109 | goto update; |
a3d4e20a | 2110 | } |
561aafbc JH |
2111 | |
2112 | /* Entry not in the cache. Add new one. */ | |
2113 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
2114 | if (!ie) | |
3175405b | 2115 | return false; |
561aafbc JH |
2116 | |
2117 | list_add(&ie->all, &cache->all); | |
2118 | ||
2119 | if (name_known) { | |
2120 | ie->name_state = NAME_KNOWN; | |
2121 | } else { | |
2122 | ie->name_state = NAME_NOT_KNOWN; | |
2123 | list_add(&ie->list, &cache->unknown); | |
2124 | } | |
70f23020 | 2125 | |
561aafbc JH |
2126 | update: |
2127 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 2128 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
2129 | ie->name_state = NAME_KNOWN; |
2130 | list_del(&ie->list); | |
1da177e4 LT |
2131 | } |
2132 | ||
70f23020 AE |
2133 | memcpy(&ie->data, data, sizeof(*data)); |
2134 | ie->timestamp = jiffies; | |
1da177e4 | 2135 | cache->timestamp = jiffies; |
3175405b JH |
2136 | |
2137 | if (ie->name_state == NAME_NOT_KNOWN) | |
2138 | return false; | |
2139 | ||
2140 | return true; | |
1da177e4 LT |
2141 | } |
2142 | ||
2143 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
2144 | { | |
30883512 | 2145 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
2146 | struct inquiry_info *info = (struct inquiry_info *) buf; |
2147 | struct inquiry_entry *e; | |
2148 | int copied = 0; | |
2149 | ||
561aafbc | 2150 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 2151 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
2152 | |
2153 | if (copied >= num) | |
2154 | break; | |
2155 | ||
1da177e4 LT |
2156 | bacpy(&info->bdaddr, &data->bdaddr); |
2157 | info->pscan_rep_mode = data->pscan_rep_mode; | |
2158 | info->pscan_period_mode = data->pscan_period_mode; | |
2159 | info->pscan_mode = data->pscan_mode; | |
2160 | memcpy(info->dev_class, data->dev_class, 3); | |
2161 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 2162 | |
1da177e4 | 2163 | info++; |
b57c1a56 | 2164 | copied++; |
1da177e4 LT |
2165 | } |
2166 | ||
2167 | BT_DBG("cache %p, copied %d", cache, copied); | |
2168 | return copied; | |
2169 | } | |
2170 | ||
42c6b129 | 2171 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
2172 | { |
2173 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 2174 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
2175 | struct hci_cp_inquiry cp; |
2176 | ||
2177 | BT_DBG("%s", hdev->name); | |
2178 | ||
2179 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
2180 | return; | |
2181 | ||
2182 | /* Start Inquiry */ | |
2183 | memcpy(&cp.lap, &ir->lap, 3); | |
2184 | cp.length = ir->length; | |
2185 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 2186 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
2187 | } |
2188 | ||
3e13fa1e AG |
2189 | static int wait_inquiry(void *word) |
2190 | { | |
2191 | schedule(); | |
2192 | return signal_pending(current); | |
2193 | } | |
2194 | ||
1da177e4 LT |
2195 | int hci_inquiry(void __user *arg) |
2196 | { | |
2197 | __u8 __user *ptr = arg; | |
2198 | struct hci_inquiry_req ir; | |
2199 | struct hci_dev *hdev; | |
2200 | int err = 0, do_inquiry = 0, max_rsp; | |
2201 | long timeo; | |
2202 | __u8 *buf; | |
2203 | ||
2204 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
2205 | return -EFAULT; | |
2206 | ||
5a08ecce AE |
2207 | hdev = hci_dev_get(ir.dev_id); |
2208 | if (!hdev) | |
1da177e4 LT |
2209 | return -ENODEV; |
2210 | ||
0736cfa8 MH |
2211 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2212 | err = -EBUSY; | |
2213 | goto done; | |
2214 | } | |
2215 | ||
5b69bef5 MH |
2216 | if (hdev->dev_type != HCI_BREDR) { |
2217 | err = -EOPNOTSUPP; | |
2218 | goto done; | |
2219 | } | |
2220 | ||
56f87901 JH |
2221 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
2222 | err = -EOPNOTSUPP; | |
2223 | goto done; | |
2224 | } | |
2225 | ||
09fd0de5 | 2226 | hci_dev_lock(hdev); |
8e87d142 | 2227 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 2228 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 2229 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
2230 | do_inquiry = 1; |
2231 | } | |
09fd0de5 | 2232 | hci_dev_unlock(hdev); |
1da177e4 | 2233 | |
04837f64 | 2234 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
2235 | |
2236 | if (do_inquiry) { | |
01178cd4 JH |
2237 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
2238 | timeo); | |
70f23020 AE |
2239 | if (err < 0) |
2240 | goto done; | |
3e13fa1e AG |
2241 | |
2242 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
2243 | * cleared). If it is interrupted by a signal, return -EINTR. | |
2244 | */ | |
2245 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, wait_inquiry, | |
2246 | TASK_INTERRUPTIBLE)) | |
2247 | return -EINTR; | |
70f23020 | 2248 | } |
1da177e4 | 2249 | |
8fc9ced3 GP |
2250 | /* for unlimited number of responses we will use buffer with |
2251 | * 255 entries | |
2252 | */ | |
1da177e4 LT |
2253 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
2254 | ||
2255 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
2256 | * copy it to the user space. | |
2257 | */ | |
01df8c31 | 2258 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 2259 | if (!buf) { |
1da177e4 LT |
2260 | err = -ENOMEM; |
2261 | goto done; | |
2262 | } | |
2263 | ||
09fd0de5 | 2264 | hci_dev_lock(hdev); |
1da177e4 | 2265 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 2266 | hci_dev_unlock(hdev); |
1da177e4 LT |
2267 | |
2268 | BT_DBG("num_rsp %d", ir.num_rsp); | |
2269 | ||
2270 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
2271 | ptr += sizeof(ir); | |
2272 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 2273 | ir.num_rsp)) |
1da177e4 | 2274 | err = -EFAULT; |
8e87d142 | 2275 | } else |
1da177e4 LT |
2276 | err = -EFAULT; |
2277 | ||
2278 | kfree(buf); | |
2279 | ||
2280 | done: | |
2281 | hci_dev_put(hdev); | |
2282 | return err; | |
2283 | } | |
2284 | ||
cbed0ca1 | 2285 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 2286 | { |
1da177e4 LT |
2287 | int ret = 0; |
2288 | ||
1da177e4 LT |
2289 | BT_DBG("%s %p", hdev->name, hdev); |
2290 | ||
2291 | hci_req_lock(hdev); | |
2292 | ||
94324962 JH |
2293 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
2294 | ret = -ENODEV; | |
2295 | goto done; | |
2296 | } | |
2297 | ||
a5c8f270 MH |
2298 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) { |
2299 | /* Check for rfkill but allow the HCI setup stage to | |
2300 | * proceed (which in itself doesn't cause any RF activity). | |
2301 | */ | |
2302 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags)) { | |
2303 | ret = -ERFKILL; | |
2304 | goto done; | |
2305 | } | |
2306 | ||
2307 | /* Check for valid public address or a configured static | |
2308 | * random adddress, but let the HCI setup proceed to | |
2309 | * be able to determine if there is a public address | |
2310 | * or not. | |
2311 | * | |
c6beca0e MH |
2312 | * In case of user channel usage, it is not important |
2313 | * if a public address or static random address is | |
2314 | * available. | |
2315 | * | |
a5c8f270 MH |
2316 | * This check is only valid for BR/EDR controllers |
2317 | * since AMP controllers do not have an address. | |
2318 | */ | |
c6beca0e MH |
2319 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
2320 | hdev->dev_type == HCI_BREDR && | |
a5c8f270 MH |
2321 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
2322 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
2323 | ret = -EADDRNOTAVAIL; | |
2324 | goto done; | |
2325 | } | |
611b30f7 MH |
2326 | } |
2327 | ||
1da177e4 LT |
2328 | if (test_bit(HCI_UP, &hdev->flags)) { |
2329 | ret = -EALREADY; | |
2330 | goto done; | |
2331 | } | |
2332 | ||
1da177e4 LT |
2333 | if (hdev->open(hdev)) { |
2334 | ret = -EIO; | |
2335 | goto done; | |
2336 | } | |
2337 | ||
f41c70c4 MH |
2338 | atomic_set(&hdev->cmd_cnt, 1); |
2339 | set_bit(HCI_INIT, &hdev->flags); | |
2340 | ||
2341 | if (hdev->setup && test_bit(HCI_SETUP, &hdev->dev_flags)) | |
2342 | ret = hdev->setup(hdev); | |
2343 | ||
2344 | if (!ret) { | |
f41c70c4 MH |
2345 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
2346 | set_bit(HCI_RAW, &hdev->flags); | |
2347 | ||
0736cfa8 MH |
2348 | if (!test_bit(HCI_RAW, &hdev->flags) && |
2349 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) | |
f41c70c4 | 2350 | ret = __hci_init(hdev); |
1da177e4 LT |
2351 | } |
2352 | ||
f41c70c4 MH |
2353 | clear_bit(HCI_INIT, &hdev->flags); |
2354 | ||
1da177e4 LT |
2355 | if (!ret) { |
2356 | hci_dev_hold(hdev); | |
d6bfd59c | 2357 | set_bit(HCI_RPA_EXPIRED, &hdev->dev_flags); |
1da177e4 LT |
2358 | set_bit(HCI_UP, &hdev->flags); |
2359 | hci_notify(hdev, HCI_DEV_UP); | |
bb4b2a9a | 2360 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
0736cfa8 | 2361 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
1514b892 | 2362 | hdev->dev_type == HCI_BREDR) { |
09fd0de5 | 2363 | hci_dev_lock(hdev); |
744cf19e | 2364 | mgmt_powered(hdev, 1); |
09fd0de5 | 2365 | hci_dev_unlock(hdev); |
56e5cb86 | 2366 | } |
8e87d142 | 2367 | } else { |
1da177e4 | 2368 | /* Init failed, cleanup */ |
3eff45ea | 2369 | flush_work(&hdev->tx_work); |
c347b765 | 2370 | flush_work(&hdev->cmd_work); |
b78752cc | 2371 | flush_work(&hdev->rx_work); |
1da177e4 LT |
2372 | |
2373 | skb_queue_purge(&hdev->cmd_q); | |
2374 | skb_queue_purge(&hdev->rx_q); | |
2375 | ||
2376 | if (hdev->flush) | |
2377 | hdev->flush(hdev); | |
2378 | ||
2379 | if (hdev->sent_cmd) { | |
2380 | kfree_skb(hdev->sent_cmd); | |
2381 | hdev->sent_cmd = NULL; | |
2382 | } | |
2383 | ||
2384 | hdev->close(hdev); | |
2385 | hdev->flags = 0; | |
2386 | } | |
2387 | ||
2388 | done: | |
2389 | hci_req_unlock(hdev); | |
1da177e4 LT |
2390 | return ret; |
2391 | } | |
2392 | ||
cbed0ca1 JH |
2393 | /* ---- HCI ioctl helpers ---- */ |
2394 | ||
2395 | int hci_dev_open(__u16 dev) | |
2396 | { | |
2397 | struct hci_dev *hdev; | |
2398 | int err; | |
2399 | ||
2400 | hdev = hci_dev_get(dev); | |
2401 | if (!hdev) | |
2402 | return -ENODEV; | |
2403 | ||
e1d08f40 JH |
2404 | /* We need to ensure that no other power on/off work is pending |
2405 | * before proceeding to call hci_dev_do_open. This is | |
2406 | * particularly important if the setup procedure has not yet | |
2407 | * completed. | |
2408 | */ | |
2409 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
2410 | cancel_delayed_work(&hdev->power_off); | |
2411 | ||
a5c8f270 MH |
2412 | /* After this call it is guaranteed that the setup procedure |
2413 | * has finished. This means that error conditions like RFKILL | |
2414 | * or no valid public or static random address apply. | |
2415 | */ | |
e1d08f40 JH |
2416 | flush_workqueue(hdev->req_workqueue); |
2417 | ||
cbed0ca1 JH |
2418 | err = hci_dev_do_open(hdev); |
2419 | ||
2420 | hci_dev_put(hdev); | |
2421 | ||
2422 | return err; | |
2423 | } | |
2424 | ||
1da177e4 LT |
2425 | static int hci_dev_do_close(struct hci_dev *hdev) |
2426 | { | |
2427 | BT_DBG("%s %p", hdev->name, hdev); | |
2428 | ||
78c04c0b VCG |
2429 | cancel_delayed_work(&hdev->power_off); |
2430 | ||
1da177e4 LT |
2431 | hci_req_cancel(hdev, ENODEV); |
2432 | hci_req_lock(hdev); | |
2433 | ||
2434 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 2435 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
2436 | hci_req_unlock(hdev); |
2437 | return 0; | |
2438 | } | |
2439 | ||
3eff45ea GP |
2440 | /* Flush RX and TX works */ |
2441 | flush_work(&hdev->tx_work); | |
b78752cc | 2442 | flush_work(&hdev->rx_work); |
1da177e4 | 2443 | |
16ab91ab | 2444 | if (hdev->discov_timeout > 0) { |
e0f9309f | 2445 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 2446 | hdev->discov_timeout = 0; |
5e5282bb | 2447 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
310a3d48 | 2448 | clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
2449 | } |
2450 | ||
a8b2d5c2 | 2451 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
2452 | cancel_delayed_work(&hdev->service_cache); |
2453 | ||
7ba8b4be | 2454 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
4518bb0f JH |
2455 | |
2456 | if (test_bit(HCI_MGMT, &hdev->dev_flags)) | |
2457 | cancel_delayed_work_sync(&hdev->rpa_expired); | |
7ba8b4be | 2458 | |
09fd0de5 | 2459 | hci_dev_lock(hdev); |
1f9b9a5d | 2460 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 2461 | hci_conn_hash_flush(hdev); |
6046dc3e | 2462 | hci_pend_le_conns_clear(hdev); |
09fd0de5 | 2463 | hci_dev_unlock(hdev); |
1da177e4 LT |
2464 | |
2465 | hci_notify(hdev, HCI_DEV_DOWN); | |
2466 | ||
2467 | if (hdev->flush) | |
2468 | hdev->flush(hdev); | |
2469 | ||
2470 | /* Reset device */ | |
2471 | skb_queue_purge(&hdev->cmd_q); | |
2472 | atomic_set(&hdev->cmd_cnt, 1); | |
8af59467 | 2473 | if (!test_bit(HCI_RAW, &hdev->flags) && |
3a6afbd2 | 2474 | !test_bit(HCI_AUTO_OFF, &hdev->dev_flags) && |
a6c511c6 | 2475 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 2476 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 2477 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
2478 | clear_bit(HCI_INIT, &hdev->flags); |
2479 | } | |
2480 | ||
c347b765 GP |
2481 | /* flush cmd work */ |
2482 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
2483 | |
2484 | /* Drop queues */ | |
2485 | skb_queue_purge(&hdev->rx_q); | |
2486 | skb_queue_purge(&hdev->cmd_q); | |
2487 | skb_queue_purge(&hdev->raw_q); | |
2488 | ||
2489 | /* Drop last sent command */ | |
2490 | if (hdev->sent_cmd) { | |
b79f44c1 | 2491 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
2492 | kfree_skb(hdev->sent_cmd); |
2493 | hdev->sent_cmd = NULL; | |
2494 | } | |
2495 | ||
b6ddb638 JH |
2496 | kfree_skb(hdev->recv_evt); |
2497 | hdev->recv_evt = NULL; | |
2498 | ||
1da177e4 LT |
2499 | /* After this point our queues are empty |
2500 | * and no tasks are scheduled. */ | |
2501 | hdev->close(hdev); | |
2502 | ||
35b973c9 JH |
2503 | /* Clear flags */ |
2504 | hdev->flags = 0; | |
2505 | hdev->dev_flags &= ~HCI_PERSISTENT_MASK; | |
2506 | ||
93c311a0 MH |
2507 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { |
2508 | if (hdev->dev_type == HCI_BREDR) { | |
2509 | hci_dev_lock(hdev); | |
2510 | mgmt_powered(hdev, 0); | |
2511 | hci_dev_unlock(hdev); | |
2512 | } | |
8ee56540 | 2513 | } |
5add6af8 | 2514 | |
ced5c338 | 2515 | /* Controller radio is available but is currently powered down */ |
536619e8 | 2516 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 2517 | |
e59fda8d | 2518 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 2519 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
7a4cd51d | 2520 | bacpy(&hdev->random_addr, BDADDR_ANY); |
e59fda8d | 2521 | |
1da177e4 LT |
2522 | hci_req_unlock(hdev); |
2523 | ||
2524 | hci_dev_put(hdev); | |
2525 | return 0; | |
2526 | } | |
2527 | ||
2528 | int hci_dev_close(__u16 dev) | |
2529 | { | |
2530 | struct hci_dev *hdev; | |
2531 | int err; | |
2532 | ||
70f23020 AE |
2533 | hdev = hci_dev_get(dev); |
2534 | if (!hdev) | |
1da177e4 | 2535 | return -ENODEV; |
8ee56540 | 2536 | |
0736cfa8 MH |
2537 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2538 | err = -EBUSY; | |
2539 | goto done; | |
2540 | } | |
2541 | ||
8ee56540 MH |
2542 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
2543 | cancel_delayed_work(&hdev->power_off); | |
2544 | ||
1da177e4 | 2545 | err = hci_dev_do_close(hdev); |
8ee56540 | 2546 | |
0736cfa8 | 2547 | done: |
1da177e4 LT |
2548 | hci_dev_put(hdev); |
2549 | return err; | |
2550 | } | |
2551 | ||
2552 | int hci_dev_reset(__u16 dev) | |
2553 | { | |
2554 | struct hci_dev *hdev; | |
2555 | int ret = 0; | |
2556 | ||
70f23020 AE |
2557 | hdev = hci_dev_get(dev); |
2558 | if (!hdev) | |
1da177e4 LT |
2559 | return -ENODEV; |
2560 | ||
2561 | hci_req_lock(hdev); | |
1da177e4 | 2562 | |
808a049e MH |
2563 | if (!test_bit(HCI_UP, &hdev->flags)) { |
2564 | ret = -ENETDOWN; | |
1da177e4 | 2565 | goto done; |
808a049e | 2566 | } |
1da177e4 | 2567 | |
0736cfa8 MH |
2568 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2569 | ret = -EBUSY; | |
2570 | goto done; | |
2571 | } | |
2572 | ||
1da177e4 LT |
2573 | /* Drop queues */ |
2574 | skb_queue_purge(&hdev->rx_q); | |
2575 | skb_queue_purge(&hdev->cmd_q); | |
2576 | ||
09fd0de5 | 2577 | hci_dev_lock(hdev); |
1f9b9a5d | 2578 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 2579 | hci_conn_hash_flush(hdev); |
09fd0de5 | 2580 | hci_dev_unlock(hdev); |
1da177e4 LT |
2581 | |
2582 | if (hdev->flush) | |
2583 | hdev->flush(hdev); | |
2584 | ||
8e87d142 | 2585 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 2586 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
2587 | |
2588 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
01178cd4 | 2589 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
2590 | |
2591 | done: | |
1da177e4 LT |
2592 | hci_req_unlock(hdev); |
2593 | hci_dev_put(hdev); | |
2594 | return ret; | |
2595 | } | |
2596 | ||
2597 | int hci_dev_reset_stat(__u16 dev) | |
2598 | { | |
2599 | struct hci_dev *hdev; | |
2600 | int ret = 0; | |
2601 | ||
70f23020 AE |
2602 | hdev = hci_dev_get(dev); |
2603 | if (!hdev) | |
1da177e4 LT |
2604 | return -ENODEV; |
2605 | ||
0736cfa8 MH |
2606 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2607 | ret = -EBUSY; | |
2608 | goto done; | |
2609 | } | |
2610 | ||
1da177e4 LT |
2611 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
2612 | ||
0736cfa8 | 2613 | done: |
1da177e4 | 2614 | hci_dev_put(hdev); |
1da177e4 LT |
2615 | return ret; |
2616 | } | |
2617 | ||
2618 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
2619 | { | |
2620 | struct hci_dev *hdev; | |
2621 | struct hci_dev_req dr; | |
2622 | int err = 0; | |
2623 | ||
2624 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
2625 | return -EFAULT; | |
2626 | ||
70f23020 AE |
2627 | hdev = hci_dev_get(dr.dev_id); |
2628 | if (!hdev) | |
1da177e4 LT |
2629 | return -ENODEV; |
2630 | ||
0736cfa8 MH |
2631 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2632 | err = -EBUSY; | |
2633 | goto done; | |
2634 | } | |
2635 | ||
5b69bef5 MH |
2636 | if (hdev->dev_type != HCI_BREDR) { |
2637 | err = -EOPNOTSUPP; | |
2638 | goto done; | |
2639 | } | |
2640 | ||
56f87901 JH |
2641 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
2642 | err = -EOPNOTSUPP; | |
2643 | goto done; | |
2644 | } | |
2645 | ||
1da177e4 LT |
2646 | switch (cmd) { |
2647 | case HCISETAUTH: | |
01178cd4 JH |
2648 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
2649 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2650 | break; |
2651 | ||
2652 | case HCISETENCRYPT: | |
2653 | if (!lmp_encrypt_capable(hdev)) { | |
2654 | err = -EOPNOTSUPP; | |
2655 | break; | |
2656 | } | |
2657 | ||
2658 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
2659 | /* Auth must be enabled first */ | |
01178cd4 JH |
2660 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
2661 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2662 | if (err) |
2663 | break; | |
2664 | } | |
2665 | ||
01178cd4 JH |
2666 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
2667 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2668 | break; |
2669 | ||
2670 | case HCISETSCAN: | |
01178cd4 JH |
2671 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
2672 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2673 | break; |
2674 | ||
1da177e4 | 2675 | case HCISETLINKPOL: |
01178cd4 JH |
2676 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
2677 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2678 | break; |
2679 | ||
2680 | case HCISETLINKMODE: | |
e4e8e37c MH |
2681 | hdev->link_mode = ((__u16) dr.dev_opt) & |
2682 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
2683 | break; | |
2684 | ||
2685 | case HCISETPTYPE: | |
2686 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
2687 | break; |
2688 | ||
2689 | case HCISETACLMTU: | |
e4e8e37c MH |
2690 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
2691 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
2692 | break; |
2693 | ||
2694 | case HCISETSCOMTU: | |
e4e8e37c MH |
2695 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
2696 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
2697 | break; |
2698 | ||
2699 | default: | |
2700 | err = -EINVAL; | |
2701 | break; | |
2702 | } | |
e4e8e37c | 2703 | |
0736cfa8 | 2704 | done: |
1da177e4 LT |
2705 | hci_dev_put(hdev); |
2706 | return err; | |
2707 | } | |
2708 | ||
2709 | int hci_get_dev_list(void __user *arg) | |
2710 | { | |
8035ded4 | 2711 | struct hci_dev *hdev; |
1da177e4 LT |
2712 | struct hci_dev_list_req *dl; |
2713 | struct hci_dev_req *dr; | |
1da177e4 LT |
2714 | int n = 0, size, err; |
2715 | __u16 dev_num; | |
2716 | ||
2717 | if (get_user(dev_num, (__u16 __user *) arg)) | |
2718 | return -EFAULT; | |
2719 | ||
2720 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
2721 | return -EINVAL; | |
2722 | ||
2723 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
2724 | ||
70f23020 AE |
2725 | dl = kzalloc(size, GFP_KERNEL); |
2726 | if (!dl) | |
1da177e4 LT |
2727 | return -ENOMEM; |
2728 | ||
2729 | dr = dl->dev_req; | |
2730 | ||
f20d09d5 | 2731 | read_lock(&hci_dev_list_lock); |
8035ded4 | 2732 | list_for_each_entry(hdev, &hci_dev_list, list) { |
a8b2d5c2 | 2733 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 2734 | cancel_delayed_work(&hdev->power_off); |
c542a06c | 2735 | |
a8b2d5c2 JH |
2736 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
2737 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 2738 | |
1da177e4 LT |
2739 | (dr + n)->dev_id = hdev->id; |
2740 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 2741 | |
1da177e4 LT |
2742 | if (++n >= dev_num) |
2743 | break; | |
2744 | } | |
f20d09d5 | 2745 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2746 | |
2747 | dl->dev_num = n; | |
2748 | size = sizeof(*dl) + n * sizeof(*dr); | |
2749 | ||
2750 | err = copy_to_user(arg, dl, size); | |
2751 | kfree(dl); | |
2752 | ||
2753 | return err ? -EFAULT : 0; | |
2754 | } | |
2755 | ||
2756 | int hci_get_dev_info(void __user *arg) | |
2757 | { | |
2758 | struct hci_dev *hdev; | |
2759 | struct hci_dev_info di; | |
2760 | int err = 0; | |
2761 | ||
2762 | if (copy_from_user(&di, arg, sizeof(di))) | |
2763 | return -EFAULT; | |
2764 | ||
70f23020 AE |
2765 | hdev = hci_dev_get(di.dev_id); |
2766 | if (!hdev) | |
1da177e4 LT |
2767 | return -ENODEV; |
2768 | ||
a8b2d5c2 | 2769 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
3243553f | 2770 | cancel_delayed_work_sync(&hdev->power_off); |
ab81cbf9 | 2771 | |
a8b2d5c2 JH |
2772 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
2773 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 2774 | |
1da177e4 LT |
2775 | strcpy(di.name, hdev->name); |
2776 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 2777 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
1da177e4 LT |
2778 | di.flags = hdev->flags; |
2779 | di.pkt_type = hdev->pkt_type; | |
572c7f84 JH |
2780 | if (lmp_bredr_capable(hdev)) { |
2781 | di.acl_mtu = hdev->acl_mtu; | |
2782 | di.acl_pkts = hdev->acl_pkts; | |
2783 | di.sco_mtu = hdev->sco_mtu; | |
2784 | di.sco_pkts = hdev->sco_pkts; | |
2785 | } else { | |
2786 | di.acl_mtu = hdev->le_mtu; | |
2787 | di.acl_pkts = hdev->le_pkts; | |
2788 | di.sco_mtu = 0; | |
2789 | di.sco_pkts = 0; | |
2790 | } | |
1da177e4 LT |
2791 | di.link_policy = hdev->link_policy; |
2792 | di.link_mode = hdev->link_mode; | |
2793 | ||
2794 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
2795 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
2796 | ||
2797 | if (copy_to_user(arg, &di, sizeof(di))) | |
2798 | err = -EFAULT; | |
2799 | ||
2800 | hci_dev_put(hdev); | |
2801 | ||
2802 | return err; | |
2803 | } | |
2804 | ||
2805 | /* ---- Interface to HCI drivers ---- */ | |
2806 | ||
611b30f7 MH |
2807 | static int hci_rfkill_set_block(void *data, bool blocked) |
2808 | { | |
2809 | struct hci_dev *hdev = data; | |
2810 | ||
2811 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
2812 | ||
0736cfa8 MH |
2813 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
2814 | return -EBUSY; | |
2815 | ||
5e130367 JH |
2816 | if (blocked) { |
2817 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
bf543036 JH |
2818 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) |
2819 | hci_dev_do_close(hdev); | |
5e130367 JH |
2820 | } else { |
2821 | clear_bit(HCI_RFKILLED, &hdev->dev_flags); | |
1025c04c | 2822 | } |
611b30f7 MH |
2823 | |
2824 | return 0; | |
2825 | } | |
2826 | ||
2827 | static const struct rfkill_ops hci_rfkill_ops = { | |
2828 | .set_block = hci_rfkill_set_block, | |
2829 | }; | |
2830 | ||
ab81cbf9 JH |
2831 | static void hci_power_on(struct work_struct *work) |
2832 | { | |
2833 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2834 | int err; |
ab81cbf9 JH |
2835 | |
2836 | BT_DBG("%s", hdev->name); | |
2837 | ||
cbed0ca1 | 2838 | err = hci_dev_do_open(hdev); |
96570ffc JH |
2839 | if (err < 0) { |
2840 | mgmt_set_powered_failed(hdev, err); | |
ab81cbf9 | 2841 | return; |
96570ffc | 2842 | } |
ab81cbf9 | 2843 | |
a5c8f270 MH |
2844 | /* During the HCI setup phase, a few error conditions are |
2845 | * ignored and they need to be checked now. If they are still | |
2846 | * valid, it is important to turn the device back off. | |
2847 | */ | |
2848 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags) || | |
2849 | (hdev->dev_type == HCI_BREDR && | |
2850 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
2851 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
bf543036 JH |
2852 | clear_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
2853 | hci_dev_do_close(hdev); | |
2854 | } else if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { | |
19202573 JH |
2855 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2856 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2857 | } |
ab81cbf9 | 2858 | |
a8b2d5c2 | 2859 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
744cf19e | 2860 | mgmt_index_added(hdev); |
ab81cbf9 JH |
2861 | } |
2862 | ||
2863 | static void hci_power_off(struct work_struct *work) | |
2864 | { | |
3243553f | 2865 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 2866 | power_off.work); |
ab81cbf9 JH |
2867 | |
2868 | BT_DBG("%s", hdev->name); | |
2869 | ||
8ee56540 | 2870 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
2871 | } |
2872 | ||
16ab91ab JH |
2873 | static void hci_discov_off(struct work_struct *work) |
2874 | { | |
2875 | struct hci_dev *hdev; | |
16ab91ab JH |
2876 | |
2877 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
2878 | ||
2879 | BT_DBG("%s", hdev->name); | |
2880 | ||
d1967ff8 | 2881 | mgmt_discoverable_timeout(hdev); |
16ab91ab JH |
2882 | } |
2883 | ||
35f7498a | 2884 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 2885 | { |
4821002c | 2886 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 2887 | |
4821002c JH |
2888 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
2889 | list_del(&uuid->list); | |
2aeb9a1a JH |
2890 | kfree(uuid); |
2891 | } | |
2aeb9a1a JH |
2892 | } |
2893 | ||
35f7498a | 2894 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 JH |
2895 | { |
2896 | struct list_head *p, *n; | |
2897 | ||
2898 | list_for_each_safe(p, n, &hdev->link_keys) { | |
2899 | struct link_key *key; | |
2900 | ||
2901 | key = list_entry(p, struct link_key, list); | |
2902 | ||
2903 | list_del(p); | |
2904 | kfree(key); | |
2905 | } | |
55ed8ca1 JH |
2906 | } |
2907 | ||
35f7498a | 2908 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf VCG |
2909 | { |
2910 | struct smp_ltk *k, *tmp; | |
2911 | ||
2912 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
2913 | list_del(&k->list); | |
2914 | kfree(k); | |
2915 | } | |
b899efaf VCG |
2916 | } |
2917 | ||
970c4e46 JH |
2918 | void hci_smp_irks_clear(struct hci_dev *hdev) |
2919 | { | |
2920 | struct smp_irk *k, *tmp; | |
2921 | ||
2922 | list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) { | |
2923 | list_del(&k->list); | |
2924 | kfree(k); | |
2925 | } | |
2926 | } | |
2927 | ||
55ed8ca1 JH |
2928 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2929 | { | |
8035ded4 | 2930 | struct link_key *k; |
55ed8ca1 | 2931 | |
8035ded4 | 2932 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
2933 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
2934 | return k; | |
55ed8ca1 JH |
2935 | |
2936 | return NULL; | |
2937 | } | |
2938 | ||
745c0ce3 | 2939 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 2940 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
2941 | { |
2942 | /* Legacy key */ | |
2943 | if (key_type < 0x03) | |
745c0ce3 | 2944 | return true; |
d25e28ab JH |
2945 | |
2946 | /* Debug keys are insecure so don't store them persistently */ | |
2947 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 2948 | return false; |
d25e28ab JH |
2949 | |
2950 | /* Changed combination key and there's no previous one */ | |
2951 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 2952 | return false; |
d25e28ab JH |
2953 | |
2954 | /* Security mode 3 case */ | |
2955 | if (!conn) | |
745c0ce3 | 2956 | return true; |
d25e28ab JH |
2957 | |
2958 | /* Neither local nor remote side had no-bonding as requirement */ | |
2959 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 2960 | return true; |
d25e28ab JH |
2961 | |
2962 | /* Local side had dedicated bonding as requirement */ | |
2963 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 2964 | return true; |
d25e28ab JH |
2965 | |
2966 | /* Remote side had dedicated bonding as requirement */ | |
2967 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 2968 | return true; |
d25e28ab JH |
2969 | |
2970 | /* If none of the above criteria match, then don't store the key | |
2971 | * persistently */ | |
745c0ce3 | 2972 | return false; |
d25e28ab JH |
2973 | } |
2974 | ||
98a0b845 JH |
2975 | static bool ltk_type_master(u8 type) |
2976 | { | |
2977 | if (type == HCI_SMP_STK || type == HCI_SMP_LTK) | |
2978 | return true; | |
2979 | ||
2980 | return false; | |
2981 | } | |
2982 | ||
fe39c7b2 | 2983 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, __le64 rand, |
98a0b845 | 2984 | bool master) |
75d262c2 | 2985 | { |
c9839a11 | 2986 | struct smp_ltk *k; |
75d262c2 | 2987 | |
c9839a11 | 2988 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
fe39c7b2 | 2989 | if (k->ediv != ediv || k->rand != rand) |
75d262c2 VCG |
2990 | continue; |
2991 | ||
98a0b845 JH |
2992 | if (ltk_type_master(k->type) != master) |
2993 | continue; | |
2994 | ||
c9839a11 | 2995 | return k; |
75d262c2 VCG |
2996 | } |
2997 | ||
2998 | return NULL; | |
2999 | } | |
75d262c2 | 3000 | |
c9839a11 | 3001 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
98a0b845 | 3002 | u8 addr_type, bool master) |
75d262c2 | 3003 | { |
c9839a11 | 3004 | struct smp_ltk *k; |
75d262c2 | 3005 | |
c9839a11 VCG |
3006 | list_for_each_entry(k, &hdev->long_term_keys, list) |
3007 | if (addr_type == k->bdaddr_type && | |
98a0b845 JH |
3008 | bacmp(bdaddr, &k->bdaddr) == 0 && |
3009 | ltk_type_master(k->type) == master) | |
75d262c2 VCG |
3010 | return k; |
3011 | ||
3012 | return NULL; | |
3013 | } | |
75d262c2 | 3014 | |
970c4e46 JH |
3015 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
3016 | { | |
3017 | struct smp_irk *irk; | |
3018 | ||
3019 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { | |
3020 | if (!bacmp(&irk->rpa, rpa)) | |
3021 | return irk; | |
3022 | } | |
3023 | ||
3024 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { | |
3025 | if (smp_irk_matches(hdev->tfm_aes, irk->val, rpa)) { | |
3026 | bacpy(&irk->rpa, rpa); | |
3027 | return irk; | |
3028 | } | |
3029 | } | |
3030 | ||
3031 | return NULL; | |
3032 | } | |
3033 | ||
3034 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3035 | u8 addr_type) | |
3036 | { | |
3037 | struct smp_irk *irk; | |
3038 | ||
6cfc9988 JH |
3039 | /* Identity Address must be public or static random */ |
3040 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) | |
3041 | return NULL; | |
3042 | ||
970c4e46 JH |
3043 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { |
3044 | if (addr_type == irk->addr_type && | |
3045 | bacmp(bdaddr, &irk->bdaddr) == 0) | |
3046 | return irk; | |
3047 | } | |
3048 | ||
3049 | return NULL; | |
3050 | } | |
3051 | ||
d25e28ab | 3052 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
04124681 | 3053 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
55ed8ca1 JH |
3054 | { |
3055 | struct link_key *key, *old_key; | |
745c0ce3 VA |
3056 | u8 old_key_type; |
3057 | bool persistent; | |
55ed8ca1 JH |
3058 | |
3059 | old_key = hci_find_link_key(hdev, bdaddr); | |
3060 | if (old_key) { | |
3061 | old_key_type = old_key->type; | |
3062 | key = old_key; | |
3063 | } else { | |
12adcf3a | 3064 | old_key_type = conn ? conn->key_type : 0xff; |
0a14ab41 | 3065 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
55ed8ca1 JH |
3066 | if (!key) |
3067 | return -ENOMEM; | |
3068 | list_add(&key->list, &hdev->link_keys); | |
3069 | } | |
3070 | ||
6ed93dc6 | 3071 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 3072 | |
d25e28ab JH |
3073 | /* Some buggy controller combinations generate a changed |
3074 | * combination key for legacy pairing even when there's no | |
3075 | * previous key */ | |
3076 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 3077 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 3078 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
3079 | if (conn) |
3080 | conn->key_type = type; | |
3081 | } | |
d25e28ab | 3082 | |
55ed8ca1 | 3083 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 3084 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
3085 | key->pin_len = pin_len; |
3086 | ||
b6020ba0 | 3087 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 3088 | key->type = old_key_type; |
4748fed2 JH |
3089 | else |
3090 | key->type = type; | |
3091 | ||
4df378a1 JH |
3092 | if (!new_key) |
3093 | return 0; | |
3094 | ||
3095 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
3096 | ||
744cf19e | 3097 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 | 3098 | |
6ec5bcad VA |
3099 | if (conn) |
3100 | conn->flush_key = !persistent; | |
55ed8ca1 JH |
3101 | |
3102 | return 0; | |
3103 | } | |
3104 | ||
ca9142b8 | 3105 | struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
35d70271 | 3106 | u8 addr_type, u8 type, u8 authenticated, |
fe39c7b2 | 3107 | u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand) |
75d262c2 | 3108 | { |
c9839a11 | 3109 | struct smp_ltk *key, *old_key; |
98a0b845 | 3110 | bool master = ltk_type_master(type); |
75d262c2 | 3111 | |
98a0b845 | 3112 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type, master); |
c9839a11 | 3113 | if (old_key) |
75d262c2 | 3114 | key = old_key; |
c9839a11 | 3115 | else { |
0a14ab41 | 3116 | key = kzalloc(sizeof(*key), GFP_KERNEL); |
75d262c2 | 3117 | if (!key) |
ca9142b8 | 3118 | return NULL; |
c9839a11 | 3119 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
3120 | } |
3121 | ||
75d262c2 | 3122 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
3123 | key->bdaddr_type = addr_type; |
3124 | memcpy(key->val, tk, sizeof(key->val)); | |
3125 | key->authenticated = authenticated; | |
3126 | key->ediv = ediv; | |
fe39c7b2 | 3127 | key->rand = rand; |
c9839a11 VCG |
3128 | key->enc_size = enc_size; |
3129 | key->type = type; | |
75d262c2 | 3130 | |
ca9142b8 | 3131 | return key; |
75d262c2 VCG |
3132 | } |
3133 | ||
ca9142b8 JH |
3134 | struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, |
3135 | u8 addr_type, u8 val[16], bdaddr_t *rpa) | |
970c4e46 JH |
3136 | { |
3137 | struct smp_irk *irk; | |
3138 | ||
3139 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
3140 | if (!irk) { | |
3141 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
3142 | if (!irk) | |
ca9142b8 | 3143 | return NULL; |
970c4e46 JH |
3144 | |
3145 | bacpy(&irk->bdaddr, bdaddr); | |
3146 | irk->addr_type = addr_type; | |
3147 | ||
3148 | list_add(&irk->list, &hdev->identity_resolving_keys); | |
3149 | } | |
3150 | ||
3151 | memcpy(irk->val, val, 16); | |
3152 | bacpy(&irk->rpa, rpa); | |
3153 | ||
ca9142b8 | 3154 | return irk; |
970c4e46 JH |
3155 | } |
3156 | ||
55ed8ca1 JH |
3157 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
3158 | { | |
3159 | struct link_key *key; | |
3160 | ||
3161 | key = hci_find_link_key(hdev, bdaddr); | |
3162 | if (!key) | |
3163 | return -ENOENT; | |
3164 | ||
6ed93dc6 | 3165 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 JH |
3166 | |
3167 | list_del(&key->list); | |
3168 | kfree(key); | |
3169 | ||
3170 | return 0; | |
3171 | } | |
3172 | ||
e0b2b27e | 3173 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf VCG |
3174 | { |
3175 | struct smp_ltk *k, *tmp; | |
c51ffa0b | 3176 | int removed = 0; |
b899efaf VCG |
3177 | |
3178 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
e0b2b27e | 3179 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
3180 | continue; |
3181 | ||
6ed93dc6 | 3182 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf VCG |
3183 | |
3184 | list_del(&k->list); | |
3185 | kfree(k); | |
c51ffa0b | 3186 | removed++; |
b899efaf VCG |
3187 | } |
3188 | ||
c51ffa0b | 3189 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
3190 | } |
3191 | ||
a7ec7338 JH |
3192 | void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type) |
3193 | { | |
3194 | struct smp_irk *k, *tmp; | |
3195 | ||
668b7b19 | 3196 | list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) { |
a7ec7338 JH |
3197 | if (bacmp(bdaddr, &k->bdaddr) || k->addr_type != addr_type) |
3198 | continue; | |
3199 | ||
3200 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); | |
3201 | ||
3202 | list_del(&k->list); | |
3203 | kfree(k); | |
3204 | } | |
3205 | } | |
3206 | ||
6bd32326 | 3207 | /* HCI command timer function */ |
bda4f23a | 3208 | static void hci_cmd_timeout(unsigned long arg) |
6bd32326 VT |
3209 | { |
3210 | struct hci_dev *hdev = (void *) arg; | |
3211 | ||
bda4f23a AE |
3212 | if (hdev->sent_cmd) { |
3213 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
3214 | u16 opcode = __le16_to_cpu(sent->opcode); | |
3215 | ||
3216 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
3217 | } else { | |
3218 | BT_ERR("%s command tx timeout", hdev->name); | |
3219 | } | |
3220 | ||
6bd32326 | 3221 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 3222 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
3223 | } |
3224 | ||
2763eda6 | 3225 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 3226 | bdaddr_t *bdaddr) |
2763eda6 SJ |
3227 | { |
3228 | struct oob_data *data; | |
3229 | ||
3230 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
3231 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
3232 | return data; | |
3233 | ||
3234 | return NULL; | |
3235 | } | |
3236 | ||
3237 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
3238 | { | |
3239 | struct oob_data *data; | |
3240 | ||
3241 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
3242 | if (!data) | |
3243 | return -ENOENT; | |
3244 | ||
6ed93dc6 | 3245 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
3246 | |
3247 | list_del(&data->list); | |
3248 | kfree(data); | |
3249 | ||
3250 | return 0; | |
3251 | } | |
3252 | ||
35f7498a | 3253 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
3254 | { |
3255 | struct oob_data *data, *n; | |
3256 | ||
3257 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
3258 | list_del(&data->list); | |
3259 | kfree(data); | |
3260 | } | |
2763eda6 SJ |
3261 | } |
3262 | ||
0798872e MH |
3263 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
3264 | u8 *hash, u8 *randomizer) | |
2763eda6 SJ |
3265 | { |
3266 | struct oob_data *data; | |
3267 | ||
3268 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
2763eda6 | 3269 | if (!data) { |
0a14ab41 | 3270 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
2763eda6 SJ |
3271 | if (!data) |
3272 | return -ENOMEM; | |
3273 | ||
3274 | bacpy(&data->bdaddr, bdaddr); | |
3275 | list_add(&data->list, &hdev->remote_oob_data); | |
3276 | } | |
3277 | ||
519ca9d0 MH |
3278 | memcpy(data->hash192, hash, sizeof(data->hash192)); |
3279 | memcpy(data->randomizer192, randomizer, sizeof(data->randomizer192)); | |
2763eda6 | 3280 | |
0798872e MH |
3281 | memset(data->hash256, 0, sizeof(data->hash256)); |
3282 | memset(data->randomizer256, 0, sizeof(data->randomizer256)); | |
3283 | ||
3284 | BT_DBG("%s for %pMR", hdev->name, bdaddr); | |
3285 | ||
3286 | return 0; | |
3287 | } | |
3288 | ||
3289 | int hci_add_remote_oob_ext_data(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3290 | u8 *hash192, u8 *randomizer192, | |
3291 | u8 *hash256, u8 *randomizer256) | |
3292 | { | |
3293 | struct oob_data *data; | |
3294 | ||
3295 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
3296 | if (!data) { | |
0a14ab41 | 3297 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
0798872e MH |
3298 | if (!data) |
3299 | return -ENOMEM; | |
3300 | ||
3301 | bacpy(&data->bdaddr, bdaddr); | |
3302 | list_add(&data->list, &hdev->remote_oob_data); | |
3303 | } | |
3304 | ||
3305 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
3306 | memcpy(data->randomizer192, randomizer192, sizeof(data->randomizer192)); | |
3307 | ||
3308 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
3309 | memcpy(data->randomizer256, randomizer256, sizeof(data->randomizer256)); | |
3310 | ||
6ed93dc6 | 3311 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
3312 | |
3313 | return 0; | |
3314 | } | |
3315 | ||
b9ee0a78 MH |
3316 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, |
3317 | bdaddr_t *bdaddr, u8 type) | |
b2a66aad | 3318 | { |
8035ded4 | 3319 | struct bdaddr_list *b; |
b2a66aad | 3320 | |
b9ee0a78 MH |
3321 | list_for_each_entry(b, &hdev->blacklist, list) { |
3322 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) | |
b2a66aad | 3323 | return b; |
b9ee0a78 | 3324 | } |
b2a66aad AJ |
3325 | |
3326 | return NULL; | |
3327 | } | |
3328 | ||
c9507490 | 3329 | static void hci_blacklist_clear(struct hci_dev *hdev) |
b2a66aad AJ |
3330 | { |
3331 | struct list_head *p, *n; | |
3332 | ||
3333 | list_for_each_safe(p, n, &hdev->blacklist) { | |
b9ee0a78 | 3334 | struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list); |
b2a66aad AJ |
3335 | |
3336 | list_del(p); | |
3337 | kfree(b); | |
3338 | } | |
b2a66aad AJ |
3339 | } |
3340 | ||
88c1fe4b | 3341 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
3342 | { |
3343 | struct bdaddr_list *entry; | |
b2a66aad | 3344 | |
b9ee0a78 | 3345 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
3346 | return -EBADF; |
3347 | ||
b9ee0a78 | 3348 | if (hci_blacklist_lookup(hdev, bdaddr, type)) |
5e762444 | 3349 | return -EEXIST; |
b2a66aad AJ |
3350 | |
3351 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
3352 | if (!entry) |
3353 | return -ENOMEM; | |
b2a66aad AJ |
3354 | |
3355 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 3356 | entry->bdaddr_type = type; |
b2a66aad AJ |
3357 | |
3358 | list_add(&entry->list, &hdev->blacklist); | |
3359 | ||
88c1fe4b | 3360 | return mgmt_device_blocked(hdev, bdaddr, type); |
b2a66aad AJ |
3361 | } |
3362 | ||
88c1fe4b | 3363 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
3364 | { |
3365 | struct bdaddr_list *entry; | |
b2a66aad | 3366 | |
35f7498a JH |
3367 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
3368 | hci_blacklist_clear(hdev); | |
3369 | return 0; | |
3370 | } | |
b2a66aad | 3371 | |
b9ee0a78 | 3372 | entry = hci_blacklist_lookup(hdev, bdaddr, type); |
1ec918ce | 3373 | if (!entry) |
5e762444 | 3374 | return -ENOENT; |
b2a66aad AJ |
3375 | |
3376 | list_del(&entry->list); | |
3377 | kfree(entry); | |
3378 | ||
88c1fe4b | 3379 | return mgmt_device_unblocked(hdev, bdaddr, type); |
b2a66aad AJ |
3380 | } |
3381 | ||
d2ab0ac1 MH |
3382 | struct bdaddr_list *hci_white_list_lookup(struct hci_dev *hdev, |
3383 | bdaddr_t *bdaddr, u8 type) | |
3384 | { | |
3385 | struct bdaddr_list *b; | |
3386 | ||
3387 | list_for_each_entry(b, &hdev->le_white_list, list) { | |
3388 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) | |
3389 | return b; | |
3390 | } | |
3391 | ||
3392 | return NULL; | |
3393 | } | |
3394 | ||
3395 | void hci_white_list_clear(struct hci_dev *hdev) | |
3396 | { | |
3397 | struct list_head *p, *n; | |
3398 | ||
3399 | list_for_each_safe(p, n, &hdev->le_white_list) { | |
3400 | struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list); | |
3401 | ||
3402 | list_del(p); | |
3403 | kfree(b); | |
3404 | } | |
3405 | } | |
3406 | ||
3407 | int hci_white_list_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) | |
3408 | { | |
3409 | struct bdaddr_list *entry; | |
3410 | ||
3411 | if (!bacmp(bdaddr, BDADDR_ANY)) | |
3412 | return -EBADF; | |
3413 | ||
3414 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
3415 | if (!entry) | |
3416 | return -ENOMEM; | |
3417 | ||
3418 | bacpy(&entry->bdaddr, bdaddr); | |
3419 | entry->bdaddr_type = type; | |
3420 | ||
3421 | list_add(&entry->list, &hdev->le_white_list); | |
3422 | ||
3423 | return 0; | |
3424 | } | |
3425 | ||
3426 | int hci_white_list_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) | |
3427 | { | |
3428 | struct bdaddr_list *entry; | |
3429 | ||
3430 | if (!bacmp(bdaddr, BDADDR_ANY)) | |
3431 | return -EBADF; | |
3432 | ||
3433 | entry = hci_white_list_lookup(hdev, bdaddr, type); | |
3434 | if (!entry) | |
3435 | return -ENOENT; | |
3436 | ||
3437 | list_del(&entry->list); | |
3438 | kfree(entry); | |
3439 | ||
3440 | return 0; | |
3441 | } | |
3442 | ||
15819a70 AG |
3443 | /* This function requires the caller holds hdev->lock */ |
3444 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
3445 | bdaddr_t *addr, u8 addr_type) | |
3446 | { | |
3447 | struct hci_conn_params *params; | |
3448 | ||
3449 | list_for_each_entry(params, &hdev->le_conn_params, list) { | |
3450 | if (bacmp(¶ms->addr, addr) == 0 && | |
3451 | params->addr_type == addr_type) { | |
3452 | return params; | |
3453 | } | |
3454 | } | |
3455 | ||
3456 | return NULL; | |
3457 | } | |
3458 | ||
cef952ce AG |
3459 | static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type) |
3460 | { | |
3461 | struct hci_conn *conn; | |
3462 | ||
3463 | conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr); | |
3464 | if (!conn) | |
3465 | return false; | |
3466 | ||
3467 | if (conn->dst_type != type) | |
3468 | return false; | |
3469 | ||
3470 | if (conn->state != BT_CONNECTED) | |
3471 | return false; | |
3472 | ||
3473 | return true; | |
3474 | } | |
3475 | ||
a9b0a04c AG |
3476 | static bool is_identity_address(bdaddr_t *addr, u8 addr_type) |
3477 | { | |
3478 | if (addr_type == ADDR_LE_DEV_PUBLIC) | |
3479 | return true; | |
3480 | ||
3481 | /* Check for Random Static address type */ | |
3482 | if ((addr->b[5] & 0xc0) == 0xc0) | |
3483 | return true; | |
3484 | ||
3485 | return false; | |
3486 | } | |
3487 | ||
15819a70 | 3488 | /* This function requires the caller holds hdev->lock */ |
a9b0a04c AG |
3489 | int hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type, |
3490 | u8 auto_connect, u16 conn_min_interval, | |
3491 | u16 conn_max_interval) | |
15819a70 AG |
3492 | { |
3493 | struct hci_conn_params *params; | |
3494 | ||
a9b0a04c AG |
3495 | if (!is_identity_address(addr, addr_type)) |
3496 | return -EINVAL; | |
3497 | ||
15819a70 | 3498 | params = hci_conn_params_lookup(hdev, addr, addr_type); |
cef952ce AG |
3499 | if (params) |
3500 | goto update; | |
15819a70 AG |
3501 | |
3502 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
3503 | if (!params) { | |
3504 | BT_ERR("Out of memory"); | |
a9b0a04c | 3505 | return -ENOMEM; |
15819a70 AG |
3506 | } |
3507 | ||
3508 | bacpy(¶ms->addr, addr); | |
3509 | params->addr_type = addr_type; | |
cef952ce AG |
3510 | |
3511 | list_add(¶ms->list, &hdev->le_conn_params); | |
3512 | ||
3513 | update: | |
15819a70 AG |
3514 | params->conn_min_interval = conn_min_interval; |
3515 | params->conn_max_interval = conn_max_interval; | |
9fcb18ef | 3516 | params->auto_connect = auto_connect; |
15819a70 | 3517 | |
cef952ce AG |
3518 | switch (auto_connect) { |
3519 | case HCI_AUTO_CONN_DISABLED: | |
3520 | case HCI_AUTO_CONN_LINK_LOSS: | |
3521 | hci_pend_le_conn_del(hdev, addr, addr_type); | |
3522 | break; | |
3523 | case HCI_AUTO_CONN_ALWAYS: | |
3524 | if (!is_connected(hdev, addr, addr_type)) | |
3525 | hci_pend_le_conn_add(hdev, addr, addr_type); | |
3526 | break; | |
3527 | } | |
15819a70 | 3528 | |
9fcb18ef AG |
3529 | BT_DBG("addr %pMR (type %u) auto_connect %u conn_min_interval 0x%.4x " |
3530 | "conn_max_interval 0x%.4x", addr, addr_type, auto_connect, | |
3531 | conn_min_interval, conn_max_interval); | |
a9b0a04c AG |
3532 | |
3533 | return 0; | |
15819a70 AG |
3534 | } |
3535 | ||
3536 | /* This function requires the caller holds hdev->lock */ | |
3537 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
3538 | { | |
3539 | struct hci_conn_params *params; | |
3540 | ||
3541 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
3542 | if (!params) | |
3543 | return; | |
3544 | ||
cef952ce AG |
3545 | hci_pend_le_conn_del(hdev, addr, addr_type); |
3546 | ||
15819a70 AG |
3547 | list_del(¶ms->list); |
3548 | kfree(params); | |
3549 | ||
3550 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
3551 | } | |
3552 | ||
3553 | /* This function requires the caller holds hdev->lock */ | |
3554 | void hci_conn_params_clear(struct hci_dev *hdev) | |
3555 | { | |
3556 | struct hci_conn_params *params, *tmp; | |
3557 | ||
3558 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
3559 | list_del(¶ms->list); | |
3560 | kfree(params); | |
3561 | } | |
3562 | ||
3563 | BT_DBG("All LE connection parameters were removed"); | |
3564 | } | |
3565 | ||
77a77a30 AG |
3566 | /* This function requires the caller holds hdev->lock */ |
3567 | struct bdaddr_list *hci_pend_le_conn_lookup(struct hci_dev *hdev, | |
3568 | bdaddr_t *addr, u8 addr_type) | |
3569 | { | |
3570 | struct bdaddr_list *entry; | |
3571 | ||
3572 | list_for_each_entry(entry, &hdev->pend_le_conns, list) { | |
3573 | if (bacmp(&entry->bdaddr, addr) == 0 && | |
3574 | entry->bdaddr_type == addr_type) | |
3575 | return entry; | |
3576 | } | |
3577 | ||
3578 | return NULL; | |
3579 | } | |
3580 | ||
3581 | /* This function requires the caller holds hdev->lock */ | |
3582 | void hci_pend_le_conn_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
3583 | { | |
3584 | struct bdaddr_list *entry; | |
3585 | ||
3586 | entry = hci_pend_le_conn_lookup(hdev, addr, addr_type); | |
3587 | if (entry) | |
a4790dbd | 3588 | goto done; |
77a77a30 AG |
3589 | |
3590 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); | |
3591 | if (!entry) { | |
3592 | BT_ERR("Out of memory"); | |
3593 | return; | |
3594 | } | |
3595 | ||
3596 | bacpy(&entry->bdaddr, addr); | |
3597 | entry->bdaddr_type = addr_type; | |
3598 | ||
3599 | list_add(&entry->list, &hdev->pend_le_conns); | |
3600 | ||
3601 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
a4790dbd AG |
3602 | |
3603 | done: | |
3604 | hci_update_background_scan(hdev); | |
77a77a30 AG |
3605 | } |
3606 | ||
3607 | /* This function requires the caller holds hdev->lock */ | |
3608 | void hci_pend_le_conn_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
3609 | { | |
3610 | struct bdaddr_list *entry; | |
3611 | ||
3612 | entry = hci_pend_le_conn_lookup(hdev, addr, addr_type); | |
3613 | if (!entry) | |
a4790dbd | 3614 | goto done; |
77a77a30 AG |
3615 | |
3616 | list_del(&entry->list); | |
3617 | kfree(entry); | |
3618 | ||
3619 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
a4790dbd AG |
3620 | |
3621 | done: | |
3622 | hci_update_background_scan(hdev); | |
77a77a30 AG |
3623 | } |
3624 | ||
3625 | /* This function requires the caller holds hdev->lock */ | |
3626 | void hci_pend_le_conns_clear(struct hci_dev *hdev) | |
3627 | { | |
3628 | struct bdaddr_list *entry, *tmp; | |
3629 | ||
3630 | list_for_each_entry_safe(entry, tmp, &hdev->pend_le_conns, list) { | |
3631 | list_del(&entry->list); | |
3632 | kfree(entry); | |
3633 | } | |
3634 | ||
3635 | BT_DBG("All LE pending connections cleared"); | |
3636 | } | |
3637 | ||
4c87eaab | 3638 | static void inquiry_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 3639 | { |
4c87eaab AG |
3640 | if (status) { |
3641 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 3642 | |
4c87eaab AG |
3643 | hci_dev_lock(hdev); |
3644 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3645 | hci_dev_unlock(hdev); | |
3646 | return; | |
3647 | } | |
7ba8b4be AG |
3648 | } |
3649 | ||
4c87eaab | 3650 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 3651 | { |
4c87eaab AG |
3652 | /* General inquiry access code (GIAC) */ |
3653 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
3654 | struct hci_request req; | |
3655 | struct hci_cp_inquiry cp; | |
7ba8b4be AG |
3656 | int err; |
3657 | ||
4c87eaab AG |
3658 | if (status) { |
3659 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
3660 | return; | |
3661 | } | |
7ba8b4be | 3662 | |
4c87eaab AG |
3663 | switch (hdev->discovery.type) { |
3664 | case DISCOV_TYPE_LE: | |
3665 | hci_dev_lock(hdev); | |
3666 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3667 | hci_dev_unlock(hdev); | |
3668 | break; | |
7ba8b4be | 3669 | |
4c87eaab AG |
3670 | case DISCOV_TYPE_INTERLEAVED: |
3671 | hci_req_init(&req, hdev); | |
7ba8b4be | 3672 | |
4c87eaab AG |
3673 | memset(&cp, 0, sizeof(cp)); |
3674 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
3675 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
3676 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
7ba8b4be | 3677 | |
4c87eaab | 3678 | hci_dev_lock(hdev); |
7dbfac1d | 3679 | |
4c87eaab | 3680 | hci_inquiry_cache_flush(hdev); |
7dbfac1d | 3681 | |
4c87eaab AG |
3682 | err = hci_req_run(&req, inquiry_complete); |
3683 | if (err) { | |
3684 | BT_ERR("Inquiry request failed: err %d", err); | |
3685 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3686 | } | |
7dbfac1d | 3687 | |
4c87eaab AG |
3688 | hci_dev_unlock(hdev); |
3689 | break; | |
7dbfac1d | 3690 | } |
7dbfac1d AG |
3691 | } |
3692 | ||
7ba8b4be AG |
3693 | static void le_scan_disable_work(struct work_struct *work) |
3694 | { | |
3695 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 3696 | le_scan_disable.work); |
4c87eaab AG |
3697 | struct hci_request req; |
3698 | int err; | |
7ba8b4be AG |
3699 | |
3700 | BT_DBG("%s", hdev->name); | |
3701 | ||
4c87eaab | 3702 | hci_req_init(&req, hdev); |
28b75a89 | 3703 | |
b1efcc28 | 3704 | hci_req_add_le_scan_disable(&req); |
28b75a89 | 3705 | |
4c87eaab AG |
3706 | err = hci_req_run(&req, le_scan_disable_work_complete); |
3707 | if (err) | |
3708 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
3709 | } |
3710 | ||
8d97250e JH |
3711 | static void set_random_addr(struct hci_request *req, bdaddr_t *rpa) |
3712 | { | |
3713 | struct hci_dev *hdev = req->hdev; | |
3714 | ||
3715 | /* If we're advertising or initiating an LE connection we can't | |
3716 | * go ahead and change the random address at this time. This is | |
3717 | * because the eventual initiator address used for the | |
3718 | * subsequently created connection will be undefined (some | |
3719 | * controllers use the new address and others the one we had | |
3720 | * when the operation started). | |
3721 | * | |
3722 | * In this kind of scenario skip the update and let the random | |
3723 | * address be updated at the next cycle. | |
3724 | */ | |
3725 | if (test_bit(HCI_ADVERTISING, &hdev->dev_flags) || | |
3726 | hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT)) { | |
3727 | BT_DBG("Deferring random address update"); | |
3728 | return; | |
3729 | } | |
3730 | ||
3731 | hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, rpa); | |
3732 | } | |
3733 | ||
94b1fc92 MH |
3734 | int hci_update_random_address(struct hci_request *req, bool require_privacy, |
3735 | u8 *own_addr_type) | |
ebd3a747 JH |
3736 | { |
3737 | struct hci_dev *hdev = req->hdev; | |
3738 | int err; | |
3739 | ||
3740 | /* If privacy is enabled use a resolvable private address. If | |
2b5224dc MH |
3741 | * current RPA has expired or there is something else than |
3742 | * the current RPA in use, then generate a new one. | |
ebd3a747 JH |
3743 | */ |
3744 | if (test_bit(HCI_PRIVACY, &hdev->dev_flags)) { | |
ebd3a747 JH |
3745 | int to; |
3746 | ||
3747 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
3748 | ||
3749 | if (!test_and_clear_bit(HCI_RPA_EXPIRED, &hdev->dev_flags) && | |
2b5224dc | 3750 | !bacmp(&hdev->random_addr, &hdev->rpa)) |
ebd3a747 JH |
3751 | return 0; |
3752 | ||
2b5224dc | 3753 | err = smp_generate_rpa(hdev->tfm_aes, hdev->irk, &hdev->rpa); |
ebd3a747 JH |
3754 | if (err < 0) { |
3755 | BT_ERR("%s failed to generate new RPA", hdev->name); | |
3756 | return err; | |
3757 | } | |
3758 | ||
8d97250e | 3759 | set_random_addr(req, &hdev->rpa); |
ebd3a747 JH |
3760 | |
3761 | to = msecs_to_jiffies(hdev->rpa_timeout * 1000); | |
3762 | queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, to); | |
3763 | ||
3764 | return 0; | |
94b1fc92 MH |
3765 | } |
3766 | ||
3767 | /* In case of required privacy without resolvable private address, | |
3768 | * use an unresolvable private address. This is useful for active | |
3769 | * scanning and non-connectable advertising. | |
3770 | */ | |
3771 | if (require_privacy) { | |
3772 | bdaddr_t urpa; | |
3773 | ||
3774 | get_random_bytes(&urpa, 6); | |
3775 | urpa.b[5] &= 0x3f; /* Clear two most significant bits */ | |
3776 | ||
3777 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
8d97250e | 3778 | set_random_addr(req, &urpa); |
94b1fc92 | 3779 | return 0; |
ebd3a747 JH |
3780 | } |
3781 | ||
3782 | /* If forcing static address is in use or there is no public | |
3783 | * address use the static address as random address (but skip | |
3784 | * the HCI command if the current random address is already the | |
3785 | * static one. | |
3786 | */ | |
3787 | if (test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags) || | |
3788 | !bacmp(&hdev->bdaddr, BDADDR_ANY)) { | |
3789 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
3790 | if (bacmp(&hdev->static_addr, &hdev->random_addr)) | |
3791 | hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, | |
3792 | &hdev->static_addr); | |
3793 | return 0; | |
3794 | } | |
3795 | ||
3796 | /* Neither privacy nor static address is being used so use a | |
3797 | * public address. | |
3798 | */ | |
3799 | *own_addr_type = ADDR_LE_DEV_PUBLIC; | |
3800 | ||
3801 | return 0; | |
3802 | } | |
3803 | ||
a1f4c318 JH |
3804 | /* Copy the Identity Address of the controller. |
3805 | * | |
3806 | * If the controller has a public BD_ADDR, then by default use that one. | |
3807 | * If this is a LE only controller without a public address, default to | |
3808 | * the static random address. | |
3809 | * | |
3810 | * For debugging purposes it is possible to force controllers with a | |
3811 | * public address to use the static random address instead. | |
3812 | */ | |
3813 | void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
3814 | u8 *bdaddr_type) | |
3815 | { | |
3816 | if (test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags) || | |
3817 | !bacmp(&hdev->bdaddr, BDADDR_ANY)) { | |
3818 | bacpy(bdaddr, &hdev->static_addr); | |
3819 | *bdaddr_type = ADDR_LE_DEV_RANDOM; | |
3820 | } else { | |
3821 | bacpy(bdaddr, &hdev->bdaddr); | |
3822 | *bdaddr_type = ADDR_LE_DEV_PUBLIC; | |
3823 | } | |
3824 | } | |
3825 | ||
9be0dab7 DH |
3826 | /* Alloc HCI device */ |
3827 | struct hci_dev *hci_alloc_dev(void) | |
3828 | { | |
3829 | struct hci_dev *hdev; | |
3830 | ||
3831 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); | |
3832 | if (!hdev) | |
3833 | return NULL; | |
3834 | ||
b1b813d4 DH |
3835 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
3836 | hdev->esco_type = (ESCO_HV1); | |
3837 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
3838 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
3839 | hdev->io_capability = 0x03; /* No Input No Output */ | |
bbaf444a JH |
3840 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
3841 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 3842 | |
b1b813d4 DH |
3843 | hdev->sniff_max_interval = 800; |
3844 | hdev->sniff_min_interval = 80; | |
3845 | ||
3f959d46 | 3846 | hdev->le_adv_channel_map = 0x07; |
bef64738 MH |
3847 | hdev->le_scan_interval = 0x0060; |
3848 | hdev->le_scan_window = 0x0030; | |
4e70c7e7 MH |
3849 | hdev->le_conn_min_interval = 0x0028; |
3850 | hdev->le_conn_max_interval = 0x0038; | |
bef64738 | 3851 | |
d6bfd59c | 3852 | hdev->rpa_timeout = HCI_DEFAULT_RPA_TIMEOUT; |
b9a7a61e | 3853 | hdev->discov_interleaved_timeout = DISCOV_INTERLEAVED_TIMEOUT; |
31ad1691 AK |
3854 | hdev->conn_info_min_age = DEFAULT_CONN_INFO_MIN_AGE; |
3855 | hdev->conn_info_max_age = DEFAULT_CONN_INFO_MAX_AGE; | |
d6bfd59c | 3856 | |
b1b813d4 DH |
3857 | mutex_init(&hdev->lock); |
3858 | mutex_init(&hdev->req_lock); | |
3859 | ||
3860 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
3861 | INIT_LIST_HEAD(&hdev->blacklist); | |
3862 | INIT_LIST_HEAD(&hdev->uuids); | |
3863 | INIT_LIST_HEAD(&hdev->link_keys); | |
3864 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 3865 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 3866 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
d2ab0ac1 | 3867 | INIT_LIST_HEAD(&hdev->le_white_list); |
15819a70 | 3868 | INIT_LIST_HEAD(&hdev->le_conn_params); |
77a77a30 | 3869 | INIT_LIST_HEAD(&hdev->pend_le_conns); |
6b536b5e | 3870 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
3871 | |
3872 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
3873 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
3874 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
3875 | INIT_WORK(&hdev->power_on, hci_power_on); | |
b1b813d4 | 3876 | |
b1b813d4 DH |
3877 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
3878 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
3879 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
3880 | ||
b1b813d4 DH |
3881 | skb_queue_head_init(&hdev->rx_q); |
3882 | skb_queue_head_init(&hdev->cmd_q); | |
3883 | skb_queue_head_init(&hdev->raw_q); | |
3884 | ||
3885 | init_waitqueue_head(&hdev->req_wait_q); | |
3886 | ||
bda4f23a | 3887 | setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev); |
b1b813d4 | 3888 | |
b1b813d4 DH |
3889 | hci_init_sysfs(hdev); |
3890 | discovery_init(hdev); | |
9be0dab7 DH |
3891 | |
3892 | return hdev; | |
3893 | } | |
3894 | EXPORT_SYMBOL(hci_alloc_dev); | |
3895 | ||
3896 | /* Free HCI device */ | |
3897 | void hci_free_dev(struct hci_dev *hdev) | |
3898 | { | |
9be0dab7 DH |
3899 | /* will free via device release */ |
3900 | put_device(&hdev->dev); | |
3901 | } | |
3902 | EXPORT_SYMBOL(hci_free_dev); | |
3903 | ||
1da177e4 LT |
3904 | /* Register HCI device */ |
3905 | int hci_register_dev(struct hci_dev *hdev) | |
3906 | { | |
b1b813d4 | 3907 | int id, error; |
1da177e4 | 3908 | |
010666a1 | 3909 | if (!hdev->open || !hdev->close) |
1da177e4 LT |
3910 | return -EINVAL; |
3911 | ||
08add513 MM |
3912 | /* Do not allow HCI_AMP devices to register at index 0, |
3913 | * so the index can be used as the AMP controller ID. | |
3914 | */ | |
3df92b31 SL |
3915 | switch (hdev->dev_type) { |
3916 | case HCI_BREDR: | |
3917 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
3918 | break; | |
3919 | case HCI_AMP: | |
3920 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3921 | break; | |
3922 | default: | |
3923 | return -EINVAL; | |
1da177e4 | 3924 | } |
8e87d142 | 3925 | |
3df92b31 SL |
3926 | if (id < 0) |
3927 | return id; | |
3928 | ||
1da177e4 LT |
3929 | sprintf(hdev->name, "hci%d", id); |
3930 | hdev->id = id; | |
2d8b3a11 AE |
3931 | |
3932 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
3933 | ||
d8537548 KC |
3934 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3935 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
3936 | if (!hdev->workqueue) { |
3937 | error = -ENOMEM; | |
3938 | goto err; | |
3939 | } | |
f48fd9c8 | 3940 | |
d8537548 KC |
3941 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3942 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
3943 | if (!hdev->req_workqueue) { |
3944 | destroy_workqueue(hdev->workqueue); | |
3945 | error = -ENOMEM; | |
3946 | goto err; | |
3947 | } | |
3948 | ||
0153e2ec MH |
3949 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
3950 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
3951 | ||
bdc3e0f1 MH |
3952 | dev_set_name(&hdev->dev, "%s", hdev->name); |
3953 | ||
99780a7b JH |
3954 | hdev->tfm_aes = crypto_alloc_blkcipher("ecb(aes)", 0, |
3955 | CRYPTO_ALG_ASYNC); | |
3956 | if (IS_ERR(hdev->tfm_aes)) { | |
3957 | BT_ERR("Unable to create crypto context"); | |
3958 | error = PTR_ERR(hdev->tfm_aes); | |
3959 | hdev->tfm_aes = NULL; | |
3960 | goto err_wqueue; | |
3961 | } | |
3962 | ||
bdc3e0f1 | 3963 | error = device_add(&hdev->dev); |
33ca954d | 3964 | if (error < 0) |
99780a7b | 3965 | goto err_tfm; |
1da177e4 | 3966 | |
611b30f7 | 3967 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
3968 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
3969 | hdev); | |
611b30f7 MH |
3970 | if (hdev->rfkill) { |
3971 | if (rfkill_register(hdev->rfkill) < 0) { | |
3972 | rfkill_destroy(hdev->rfkill); | |
3973 | hdev->rfkill = NULL; | |
3974 | } | |
3975 | } | |
3976 | ||
5e130367 JH |
3977 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
3978 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
3979 | ||
a8b2d5c2 | 3980 | set_bit(HCI_SETUP, &hdev->dev_flags); |
004b0258 | 3981 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
ce2be9ac | 3982 | |
01cd3404 | 3983 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
3984 | /* Assume BR/EDR support until proven otherwise (such as |
3985 | * through reading supported features during init. | |
3986 | */ | |
3987 | set_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
3988 | } | |
ce2be9ac | 3989 | |
fcee3377 GP |
3990 | write_lock(&hci_dev_list_lock); |
3991 | list_add(&hdev->list, &hci_dev_list); | |
3992 | write_unlock(&hci_dev_list_lock); | |
3993 | ||
1da177e4 | 3994 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 3995 | hci_dev_hold(hdev); |
1da177e4 | 3996 | |
19202573 | 3997 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 3998 | |
1da177e4 | 3999 | return id; |
f48fd9c8 | 4000 | |
99780a7b JH |
4001 | err_tfm: |
4002 | crypto_free_blkcipher(hdev->tfm_aes); | |
33ca954d DH |
4003 | err_wqueue: |
4004 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 4005 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 4006 | err: |
3df92b31 | 4007 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 4008 | |
33ca954d | 4009 | return error; |
1da177e4 LT |
4010 | } |
4011 | EXPORT_SYMBOL(hci_register_dev); | |
4012 | ||
4013 | /* Unregister HCI device */ | |
59735631 | 4014 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 4015 | { |
3df92b31 | 4016 | int i, id; |
ef222013 | 4017 | |
c13854ce | 4018 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 4019 | |
94324962 JH |
4020 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
4021 | ||
3df92b31 SL |
4022 | id = hdev->id; |
4023 | ||
f20d09d5 | 4024 | write_lock(&hci_dev_list_lock); |
1da177e4 | 4025 | list_del(&hdev->list); |
f20d09d5 | 4026 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
4027 | |
4028 | hci_dev_do_close(hdev); | |
4029 | ||
cd4c5391 | 4030 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
4031 | kfree_skb(hdev->reassembly[i]); |
4032 | ||
b9b5ef18 GP |
4033 | cancel_work_sync(&hdev->power_on); |
4034 | ||
ab81cbf9 | 4035 | if (!test_bit(HCI_INIT, &hdev->flags) && |
a8c5fb1a | 4036 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 4037 | hci_dev_lock(hdev); |
744cf19e | 4038 | mgmt_index_removed(hdev); |
09fd0de5 | 4039 | hci_dev_unlock(hdev); |
56e5cb86 | 4040 | } |
ab81cbf9 | 4041 | |
2e58ef3e JH |
4042 | /* mgmt_index_removed should take care of emptying the |
4043 | * pending list */ | |
4044 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
4045 | ||
1da177e4 LT |
4046 | hci_notify(hdev, HCI_DEV_UNREG); |
4047 | ||
611b30f7 MH |
4048 | if (hdev->rfkill) { |
4049 | rfkill_unregister(hdev->rfkill); | |
4050 | rfkill_destroy(hdev->rfkill); | |
4051 | } | |
4052 | ||
99780a7b JH |
4053 | if (hdev->tfm_aes) |
4054 | crypto_free_blkcipher(hdev->tfm_aes); | |
4055 | ||
bdc3e0f1 | 4056 | device_del(&hdev->dev); |
147e2d59 | 4057 | |
0153e2ec MH |
4058 | debugfs_remove_recursive(hdev->debugfs); |
4059 | ||
f48fd9c8 | 4060 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 4061 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 4062 | |
09fd0de5 | 4063 | hci_dev_lock(hdev); |
e2e0cacb | 4064 | hci_blacklist_clear(hdev); |
2aeb9a1a | 4065 | hci_uuids_clear(hdev); |
55ed8ca1 | 4066 | hci_link_keys_clear(hdev); |
b899efaf | 4067 | hci_smp_ltks_clear(hdev); |
970c4e46 | 4068 | hci_smp_irks_clear(hdev); |
2763eda6 | 4069 | hci_remote_oob_data_clear(hdev); |
d2ab0ac1 | 4070 | hci_white_list_clear(hdev); |
15819a70 | 4071 | hci_conn_params_clear(hdev); |
77a77a30 | 4072 | hci_pend_le_conns_clear(hdev); |
09fd0de5 | 4073 | hci_dev_unlock(hdev); |
e2e0cacb | 4074 | |
dc946bd8 | 4075 | hci_dev_put(hdev); |
3df92b31 SL |
4076 | |
4077 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
4078 | } |
4079 | EXPORT_SYMBOL(hci_unregister_dev); | |
4080 | ||
4081 | /* Suspend HCI device */ | |
4082 | int hci_suspend_dev(struct hci_dev *hdev) | |
4083 | { | |
4084 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
4085 | return 0; | |
4086 | } | |
4087 | EXPORT_SYMBOL(hci_suspend_dev); | |
4088 | ||
4089 | /* Resume HCI device */ | |
4090 | int hci_resume_dev(struct hci_dev *hdev) | |
4091 | { | |
4092 | hci_notify(hdev, HCI_DEV_RESUME); | |
4093 | return 0; | |
4094 | } | |
4095 | EXPORT_SYMBOL(hci_resume_dev); | |
4096 | ||
76bca880 | 4097 | /* Receive frame from HCI drivers */ |
e1a26170 | 4098 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 4099 | { |
76bca880 | 4100 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 4101 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
4102 | kfree_skb(skb); |
4103 | return -ENXIO; | |
4104 | } | |
4105 | ||
d82603c6 | 4106 | /* Incoming skb */ |
76bca880 MH |
4107 | bt_cb(skb)->incoming = 1; |
4108 | ||
4109 | /* Time stamp */ | |
4110 | __net_timestamp(skb); | |
4111 | ||
76bca880 | 4112 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 4113 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 4114 | |
76bca880 MH |
4115 | return 0; |
4116 | } | |
4117 | EXPORT_SYMBOL(hci_recv_frame); | |
4118 | ||
33e882a5 | 4119 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 4120 | int count, __u8 index) |
33e882a5 SS |
4121 | { |
4122 | int len = 0; | |
4123 | int hlen = 0; | |
4124 | int remain = count; | |
4125 | struct sk_buff *skb; | |
4126 | struct bt_skb_cb *scb; | |
4127 | ||
4128 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 4129 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
4130 | return -EILSEQ; |
4131 | ||
4132 | skb = hdev->reassembly[index]; | |
4133 | ||
4134 | if (!skb) { | |
4135 | switch (type) { | |
4136 | case HCI_ACLDATA_PKT: | |
4137 | len = HCI_MAX_FRAME_SIZE; | |
4138 | hlen = HCI_ACL_HDR_SIZE; | |
4139 | break; | |
4140 | case HCI_EVENT_PKT: | |
4141 | len = HCI_MAX_EVENT_SIZE; | |
4142 | hlen = HCI_EVENT_HDR_SIZE; | |
4143 | break; | |
4144 | case HCI_SCODATA_PKT: | |
4145 | len = HCI_MAX_SCO_SIZE; | |
4146 | hlen = HCI_SCO_HDR_SIZE; | |
4147 | break; | |
4148 | } | |
4149 | ||
1e429f38 | 4150 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
4151 | if (!skb) |
4152 | return -ENOMEM; | |
4153 | ||
4154 | scb = (void *) skb->cb; | |
4155 | scb->expect = hlen; | |
4156 | scb->pkt_type = type; | |
4157 | ||
33e882a5 SS |
4158 | hdev->reassembly[index] = skb; |
4159 | } | |
4160 | ||
4161 | while (count) { | |
4162 | scb = (void *) skb->cb; | |
89bb46d0 | 4163 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
4164 | |
4165 | memcpy(skb_put(skb, len), data, len); | |
4166 | ||
4167 | count -= len; | |
4168 | data += len; | |
4169 | scb->expect -= len; | |
4170 | remain = count; | |
4171 | ||
4172 | switch (type) { | |
4173 | case HCI_EVENT_PKT: | |
4174 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
4175 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
4176 | scb->expect = h->plen; | |
4177 | ||
4178 | if (skb_tailroom(skb) < scb->expect) { | |
4179 | kfree_skb(skb); | |
4180 | hdev->reassembly[index] = NULL; | |
4181 | return -ENOMEM; | |
4182 | } | |
4183 | } | |
4184 | break; | |
4185 | ||
4186 | case HCI_ACLDATA_PKT: | |
4187 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
4188 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
4189 | scb->expect = __le16_to_cpu(h->dlen); | |
4190 | ||
4191 | if (skb_tailroom(skb) < scb->expect) { | |
4192 | kfree_skb(skb); | |
4193 | hdev->reassembly[index] = NULL; | |
4194 | return -ENOMEM; | |
4195 | } | |
4196 | } | |
4197 | break; | |
4198 | ||
4199 | case HCI_SCODATA_PKT: | |
4200 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
4201 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
4202 | scb->expect = h->dlen; | |
4203 | ||
4204 | if (skb_tailroom(skb) < scb->expect) { | |
4205 | kfree_skb(skb); | |
4206 | hdev->reassembly[index] = NULL; | |
4207 | return -ENOMEM; | |
4208 | } | |
4209 | } | |
4210 | break; | |
4211 | } | |
4212 | ||
4213 | if (scb->expect == 0) { | |
4214 | /* Complete frame */ | |
4215 | ||
4216 | bt_cb(skb)->pkt_type = type; | |
e1a26170 | 4217 | hci_recv_frame(hdev, skb); |
33e882a5 SS |
4218 | |
4219 | hdev->reassembly[index] = NULL; | |
4220 | return remain; | |
4221 | } | |
4222 | } | |
4223 | ||
4224 | return remain; | |
4225 | } | |
4226 | ||
ef222013 MH |
4227 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
4228 | { | |
f39a3c06 SS |
4229 | int rem = 0; |
4230 | ||
ef222013 MH |
4231 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
4232 | return -EILSEQ; | |
4233 | ||
da5f6c37 | 4234 | while (count) { |
1e429f38 | 4235 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
4236 | if (rem < 0) |
4237 | return rem; | |
ef222013 | 4238 | |
f39a3c06 SS |
4239 | data += (count - rem); |
4240 | count = rem; | |
f81c6224 | 4241 | } |
ef222013 | 4242 | |
f39a3c06 | 4243 | return rem; |
ef222013 MH |
4244 | } |
4245 | EXPORT_SYMBOL(hci_recv_fragment); | |
4246 | ||
99811510 SS |
4247 | #define STREAM_REASSEMBLY 0 |
4248 | ||
4249 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
4250 | { | |
4251 | int type; | |
4252 | int rem = 0; | |
4253 | ||
da5f6c37 | 4254 | while (count) { |
99811510 SS |
4255 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
4256 | ||
4257 | if (!skb) { | |
4258 | struct { char type; } *pkt; | |
4259 | ||
4260 | /* Start of the frame */ | |
4261 | pkt = data; | |
4262 | type = pkt->type; | |
4263 | ||
4264 | data++; | |
4265 | count--; | |
4266 | } else | |
4267 | type = bt_cb(skb)->pkt_type; | |
4268 | ||
1e429f38 | 4269 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 4270 | STREAM_REASSEMBLY); |
99811510 SS |
4271 | if (rem < 0) |
4272 | return rem; | |
4273 | ||
4274 | data += (count - rem); | |
4275 | count = rem; | |
f81c6224 | 4276 | } |
99811510 SS |
4277 | |
4278 | return rem; | |
4279 | } | |
4280 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
4281 | ||
1da177e4 LT |
4282 | /* ---- Interface to upper protocols ---- */ |
4283 | ||
1da177e4 LT |
4284 | int hci_register_cb(struct hci_cb *cb) |
4285 | { | |
4286 | BT_DBG("%p name %s", cb, cb->name); | |
4287 | ||
f20d09d5 | 4288 | write_lock(&hci_cb_list_lock); |
1da177e4 | 4289 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 4290 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
4291 | |
4292 | return 0; | |
4293 | } | |
4294 | EXPORT_SYMBOL(hci_register_cb); | |
4295 | ||
4296 | int hci_unregister_cb(struct hci_cb *cb) | |
4297 | { | |
4298 | BT_DBG("%p name %s", cb, cb->name); | |
4299 | ||
f20d09d5 | 4300 | write_lock(&hci_cb_list_lock); |
1da177e4 | 4301 | list_del(&cb->list); |
f20d09d5 | 4302 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
4303 | |
4304 | return 0; | |
4305 | } | |
4306 | EXPORT_SYMBOL(hci_unregister_cb); | |
4307 | ||
51086991 | 4308 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 4309 | { |
0d48d939 | 4310 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 4311 | |
cd82e61c MH |
4312 | /* Time stamp */ |
4313 | __net_timestamp(skb); | |
1da177e4 | 4314 | |
cd82e61c MH |
4315 | /* Send copy to monitor */ |
4316 | hci_send_to_monitor(hdev, skb); | |
4317 | ||
4318 | if (atomic_read(&hdev->promisc)) { | |
4319 | /* Send copy to the sockets */ | |
470fe1b5 | 4320 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4321 | } |
4322 | ||
4323 | /* Get rid of skb owner, prior to sending to the driver. */ | |
4324 | skb_orphan(skb); | |
4325 | ||
7bd8f09f | 4326 | if (hdev->send(hdev, skb) < 0) |
51086991 | 4327 | BT_ERR("%s sending frame failed", hdev->name); |
1da177e4 LT |
4328 | } |
4329 | ||
3119ae95 JH |
4330 | void hci_req_init(struct hci_request *req, struct hci_dev *hdev) |
4331 | { | |
4332 | skb_queue_head_init(&req->cmd_q); | |
4333 | req->hdev = hdev; | |
5d73e034 | 4334 | req->err = 0; |
3119ae95 JH |
4335 | } |
4336 | ||
4337 | int hci_req_run(struct hci_request *req, hci_req_complete_t complete) | |
4338 | { | |
4339 | struct hci_dev *hdev = req->hdev; | |
4340 | struct sk_buff *skb; | |
4341 | unsigned long flags; | |
4342 | ||
4343 | BT_DBG("length %u", skb_queue_len(&req->cmd_q)); | |
4344 | ||
5d73e034 AG |
4345 | /* If an error occured during request building, remove all HCI |
4346 | * commands queued on the HCI request queue. | |
4347 | */ | |
4348 | if (req->err) { | |
4349 | skb_queue_purge(&req->cmd_q); | |
4350 | return req->err; | |
4351 | } | |
4352 | ||
3119ae95 JH |
4353 | /* Do not allow empty requests */ |
4354 | if (skb_queue_empty(&req->cmd_q)) | |
382b0c39 | 4355 | return -ENODATA; |
3119ae95 JH |
4356 | |
4357 | skb = skb_peek_tail(&req->cmd_q); | |
4358 | bt_cb(skb)->req.complete = complete; | |
4359 | ||
4360 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4361 | skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q); | |
4362 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
4363 | ||
4364 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4365 | ||
4366 | return 0; | |
4367 | } | |
4368 | ||
1ca3a9d0 | 4369 | static struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, |
07dc93dd | 4370 | u32 plen, const void *param) |
1da177e4 LT |
4371 | { |
4372 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
4373 | struct hci_command_hdr *hdr; | |
4374 | struct sk_buff *skb; | |
4375 | ||
1da177e4 | 4376 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
1ca3a9d0 JH |
4377 | if (!skb) |
4378 | return NULL; | |
1da177e4 LT |
4379 | |
4380 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 4381 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
4382 | hdr->plen = plen; |
4383 | ||
4384 | if (plen) | |
4385 | memcpy(skb_put(skb, plen), param, plen); | |
4386 | ||
4387 | BT_DBG("skb len %d", skb->len); | |
4388 | ||
0d48d939 | 4389 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
c78ae283 | 4390 | |
1ca3a9d0 JH |
4391 | return skb; |
4392 | } | |
4393 | ||
4394 | /* Send HCI command */ | |
07dc93dd JH |
4395 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
4396 | const void *param) | |
1ca3a9d0 JH |
4397 | { |
4398 | struct sk_buff *skb; | |
4399 | ||
4400 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
4401 | ||
4402 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
4403 | if (!skb) { | |
4404 | BT_ERR("%s no memory for command", hdev->name); | |
4405 | return -ENOMEM; | |
4406 | } | |
4407 | ||
11714b3d JH |
4408 | /* Stand-alone HCI commands must be flaged as |
4409 | * single-command requests. | |
4410 | */ | |
4411 | bt_cb(skb)->req.start = true; | |
4412 | ||
1da177e4 | 4413 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 4414 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4415 | |
4416 | return 0; | |
4417 | } | |
1da177e4 | 4418 | |
71c76a17 | 4419 | /* Queue a command to an asynchronous HCI request */ |
07dc93dd JH |
4420 | void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, |
4421 | const void *param, u8 event) | |
71c76a17 JH |
4422 | { |
4423 | struct hci_dev *hdev = req->hdev; | |
4424 | struct sk_buff *skb; | |
4425 | ||
4426 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
4427 | ||
34739c1e AG |
4428 | /* If an error occured during request building, there is no point in |
4429 | * queueing the HCI command. We can simply return. | |
4430 | */ | |
4431 | if (req->err) | |
4432 | return; | |
4433 | ||
71c76a17 JH |
4434 | skb = hci_prepare_cmd(hdev, opcode, plen, param); |
4435 | if (!skb) { | |
5d73e034 AG |
4436 | BT_ERR("%s no memory for command (opcode 0x%4.4x)", |
4437 | hdev->name, opcode); | |
4438 | req->err = -ENOMEM; | |
e348fe6b | 4439 | return; |
71c76a17 JH |
4440 | } |
4441 | ||
4442 | if (skb_queue_empty(&req->cmd_q)) | |
4443 | bt_cb(skb)->req.start = true; | |
4444 | ||
02350a72 JH |
4445 | bt_cb(skb)->req.event = event; |
4446 | ||
71c76a17 | 4447 | skb_queue_tail(&req->cmd_q, skb); |
71c76a17 JH |
4448 | } |
4449 | ||
07dc93dd JH |
4450 | void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, |
4451 | const void *param) | |
02350a72 JH |
4452 | { |
4453 | hci_req_add_ev(req, opcode, plen, param, 0); | |
4454 | } | |
4455 | ||
1da177e4 | 4456 | /* Get data from the previously sent command */ |
a9de9248 | 4457 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
4458 | { |
4459 | struct hci_command_hdr *hdr; | |
4460 | ||
4461 | if (!hdev->sent_cmd) | |
4462 | return NULL; | |
4463 | ||
4464 | hdr = (void *) hdev->sent_cmd->data; | |
4465 | ||
a9de9248 | 4466 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
4467 | return NULL; |
4468 | ||
f0e09510 | 4469 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
4470 | |
4471 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
4472 | } | |
4473 | ||
4474 | /* Send ACL data */ | |
4475 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
4476 | { | |
4477 | struct hci_acl_hdr *hdr; | |
4478 | int len = skb->len; | |
4479 | ||
badff6d0 ACM |
4480 | skb_push(skb, HCI_ACL_HDR_SIZE); |
4481 | skb_reset_transport_header(skb); | |
9c70220b | 4482 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
4483 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
4484 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
4485 | } |
4486 | ||
ee22be7e | 4487 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 4488 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 4489 | { |
ee22be7e | 4490 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
4491 | struct hci_dev *hdev = conn->hdev; |
4492 | struct sk_buff *list; | |
4493 | ||
087bfd99 GP |
4494 | skb->len = skb_headlen(skb); |
4495 | skb->data_len = 0; | |
4496 | ||
4497 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
4498 | |
4499 | switch (hdev->dev_type) { | |
4500 | case HCI_BREDR: | |
4501 | hci_add_acl_hdr(skb, conn->handle, flags); | |
4502 | break; | |
4503 | case HCI_AMP: | |
4504 | hci_add_acl_hdr(skb, chan->handle, flags); | |
4505 | break; | |
4506 | default: | |
4507 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
4508 | return; | |
4509 | } | |
087bfd99 | 4510 | |
70f23020 AE |
4511 | list = skb_shinfo(skb)->frag_list; |
4512 | if (!list) { | |
1da177e4 LT |
4513 | /* Non fragmented */ |
4514 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
4515 | ||
73d80deb | 4516 | skb_queue_tail(queue, skb); |
1da177e4 LT |
4517 | } else { |
4518 | /* Fragmented */ | |
4519 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
4520 | ||
4521 | skb_shinfo(skb)->frag_list = NULL; | |
4522 | ||
4523 | /* Queue all fragments atomically */ | |
af3e6359 | 4524 | spin_lock(&queue->lock); |
1da177e4 | 4525 | |
73d80deb | 4526 | __skb_queue_tail(queue, skb); |
e702112f AE |
4527 | |
4528 | flags &= ~ACL_START; | |
4529 | flags |= ACL_CONT; | |
1da177e4 LT |
4530 | do { |
4531 | skb = list; list = list->next; | |
8e87d142 | 4532 | |
0d48d939 | 4533 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 4534 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
4535 | |
4536 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
4537 | ||
73d80deb | 4538 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
4539 | } while (list); |
4540 | ||
af3e6359 | 4541 | spin_unlock(&queue->lock); |
1da177e4 | 4542 | } |
73d80deb LAD |
4543 | } |
4544 | ||
4545 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
4546 | { | |
ee22be7e | 4547 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 4548 | |
f0e09510 | 4549 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 4550 | |
ee22be7e | 4551 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 4552 | |
3eff45ea | 4553 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 4554 | } |
1da177e4 LT |
4555 | |
4556 | /* Send SCO data */ | |
0d861d8b | 4557 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
4558 | { |
4559 | struct hci_dev *hdev = conn->hdev; | |
4560 | struct hci_sco_hdr hdr; | |
4561 | ||
4562 | BT_DBG("%s len %d", hdev->name, skb->len); | |
4563 | ||
aca3192c | 4564 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
4565 | hdr.dlen = skb->len; |
4566 | ||
badff6d0 ACM |
4567 | skb_push(skb, HCI_SCO_HDR_SIZE); |
4568 | skb_reset_transport_header(skb); | |
9c70220b | 4569 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 4570 | |
0d48d939 | 4571 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 4572 | |
1da177e4 | 4573 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 4574 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 4575 | } |
1da177e4 LT |
4576 | |
4577 | /* ---- HCI TX task (outgoing data) ---- */ | |
4578 | ||
4579 | /* HCI Connection scheduler */ | |
6039aa73 GP |
4580 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
4581 | int *quote) | |
1da177e4 LT |
4582 | { |
4583 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 4584 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 4585 | unsigned int num = 0, min = ~0; |
1da177e4 | 4586 | |
8e87d142 | 4587 | /* We don't have to lock device here. Connections are always |
1da177e4 | 4588 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
4589 | |
4590 | rcu_read_lock(); | |
4591 | ||
4592 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 4593 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 4594 | continue; |
769be974 MH |
4595 | |
4596 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
4597 | continue; | |
4598 | ||
1da177e4 LT |
4599 | num++; |
4600 | ||
4601 | if (c->sent < min) { | |
4602 | min = c->sent; | |
4603 | conn = c; | |
4604 | } | |
52087a79 LAD |
4605 | |
4606 | if (hci_conn_num(hdev, type) == num) | |
4607 | break; | |
1da177e4 LT |
4608 | } |
4609 | ||
bf4c6325 GP |
4610 | rcu_read_unlock(); |
4611 | ||
1da177e4 | 4612 | if (conn) { |
6ed58ec5 VT |
4613 | int cnt, q; |
4614 | ||
4615 | switch (conn->type) { | |
4616 | case ACL_LINK: | |
4617 | cnt = hdev->acl_cnt; | |
4618 | break; | |
4619 | case SCO_LINK: | |
4620 | case ESCO_LINK: | |
4621 | cnt = hdev->sco_cnt; | |
4622 | break; | |
4623 | case LE_LINK: | |
4624 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
4625 | break; | |
4626 | default: | |
4627 | cnt = 0; | |
4628 | BT_ERR("Unknown link type"); | |
4629 | } | |
4630 | ||
4631 | q = cnt / num; | |
1da177e4 LT |
4632 | *quote = q ? q : 1; |
4633 | } else | |
4634 | *quote = 0; | |
4635 | ||
4636 | BT_DBG("conn %p quote %d", conn, *quote); | |
4637 | return conn; | |
4638 | } | |
4639 | ||
6039aa73 | 4640 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
4641 | { |
4642 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 4643 | struct hci_conn *c; |
1da177e4 | 4644 | |
bae1f5d9 | 4645 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 4646 | |
bf4c6325 GP |
4647 | rcu_read_lock(); |
4648 | ||
1da177e4 | 4649 | /* Kill stalled connections */ |
bf4c6325 | 4650 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 4651 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
4652 | BT_ERR("%s killing stalled connection %pMR", |
4653 | hdev->name, &c->dst); | |
bed71748 | 4654 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
4655 | } |
4656 | } | |
bf4c6325 GP |
4657 | |
4658 | rcu_read_unlock(); | |
1da177e4 LT |
4659 | } |
4660 | ||
6039aa73 GP |
4661 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
4662 | int *quote) | |
1da177e4 | 4663 | { |
73d80deb LAD |
4664 | struct hci_conn_hash *h = &hdev->conn_hash; |
4665 | struct hci_chan *chan = NULL; | |
abc5de8f | 4666 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 4667 | struct hci_conn *conn; |
73d80deb LAD |
4668 | int cnt, q, conn_num = 0; |
4669 | ||
4670 | BT_DBG("%s", hdev->name); | |
4671 | ||
bf4c6325 GP |
4672 | rcu_read_lock(); |
4673 | ||
4674 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
4675 | struct hci_chan *tmp; |
4676 | ||
4677 | if (conn->type != type) | |
4678 | continue; | |
4679 | ||
4680 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
4681 | continue; | |
4682 | ||
4683 | conn_num++; | |
4684 | ||
8192edef | 4685 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
4686 | struct sk_buff *skb; |
4687 | ||
4688 | if (skb_queue_empty(&tmp->data_q)) | |
4689 | continue; | |
4690 | ||
4691 | skb = skb_peek(&tmp->data_q); | |
4692 | if (skb->priority < cur_prio) | |
4693 | continue; | |
4694 | ||
4695 | if (skb->priority > cur_prio) { | |
4696 | num = 0; | |
4697 | min = ~0; | |
4698 | cur_prio = skb->priority; | |
4699 | } | |
4700 | ||
4701 | num++; | |
4702 | ||
4703 | if (conn->sent < min) { | |
4704 | min = conn->sent; | |
4705 | chan = tmp; | |
4706 | } | |
4707 | } | |
4708 | ||
4709 | if (hci_conn_num(hdev, type) == conn_num) | |
4710 | break; | |
4711 | } | |
4712 | ||
bf4c6325 GP |
4713 | rcu_read_unlock(); |
4714 | ||
73d80deb LAD |
4715 | if (!chan) |
4716 | return NULL; | |
4717 | ||
4718 | switch (chan->conn->type) { | |
4719 | case ACL_LINK: | |
4720 | cnt = hdev->acl_cnt; | |
4721 | break; | |
bd1eb66b AE |
4722 | case AMP_LINK: |
4723 | cnt = hdev->block_cnt; | |
4724 | break; | |
73d80deb LAD |
4725 | case SCO_LINK: |
4726 | case ESCO_LINK: | |
4727 | cnt = hdev->sco_cnt; | |
4728 | break; | |
4729 | case LE_LINK: | |
4730 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
4731 | break; | |
4732 | default: | |
4733 | cnt = 0; | |
4734 | BT_ERR("Unknown link type"); | |
4735 | } | |
4736 | ||
4737 | q = cnt / num; | |
4738 | *quote = q ? q : 1; | |
4739 | BT_DBG("chan %p quote %d", chan, *quote); | |
4740 | return chan; | |
4741 | } | |
4742 | ||
02b20f0b LAD |
4743 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
4744 | { | |
4745 | struct hci_conn_hash *h = &hdev->conn_hash; | |
4746 | struct hci_conn *conn; | |
4747 | int num = 0; | |
4748 | ||
4749 | BT_DBG("%s", hdev->name); | |
4750 | ||
bf4c6325 GP |
4751 | rcu_read_lock(); |
4752 | ||
4753 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
4754 | struct hci_chan *chan; |
4755 | ||
4756 | if (conn->type != type) | |
4757 | continue; | |
4758 | ||
4759 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
4760 | continue; | |
4761 | ||
4762 | num++; | |
4763 | ||
8192edef | 4764 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
4765 | struct sk_buff *skb; |
4766 | ||
4767 | if (chan->sent) { | |
4768 | chan->sent = 0; | |
4769 | continue; | |
4770 | } | |
4771 | ||
4772 | if (skb_queue_empty(&chan->data_q)) | |
4773 | continue; | |
4774 | ||
4775 | skb = skb_peek(&chan->data_q); | |
4776 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
4777 | continue; | |
4778 | ||
4779 | skb->priority = HCI_PRIO_MAX - 1; | |
4780 | ||
4781 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 4782 | skb->priority); |
02b20f0b LAD |
4783 | } |
4784 | ||
4785 | if (hci_conn_num(hdev, type) == num) | |
4786 | break; | |
4787 | } | |
bf4c6325 GP |
4788 | |
4789 | rcu_read_unlock(); | |
4790 | ||
02b20f0b LAD |
4791 | } |
4792 | ||
b71d385a AE |
4793 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
4794 | { | |
4795 | /* Calculate count of blocks used by this packet */ | |
4796 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
4797 | } | |
4798 | ||
6039aa73 | 4799 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 4800 | { |
1da177e4 LT |
4801 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
4802 | /* ACL tx timeout must be longer than maximum | |
4803 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 4804 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 4805 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 4806 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 4807 | } |
63d2bc1b | 4808 | } |
1da177e4 | 4809 | |
6039aa73 | 4810 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
4811 | { |
4812 | unsigned int cnt = hdev->acl_cnt; | |
4813 | struct hci_chan *chan; | |
4814 | struct sk_buff *skb; | |
4815 | int quote; | |
4816 | ||
4817 | __check_timeout(hdev, cnt); | |
04837f64 | 4818 | |
73d80deb | 4819 | while (hdev->acl_cnt && |
a8c5fb1a | 4820 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
4821 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4822 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4823 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4824 | skb->len, skb->priority); |
73d80deb | 4825 | |
ec1cce24 LAD |
4826 | /* Stop if priority has changed */ |
4827 | if (skb->priority < priority) | |
4828 | break; | |
4829 | ||
4830 | skb = skb_dequeue(&chan->data_q); | |
4831 | ||
73d80deb | 4832 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 4833 | bt_cb(skb)->force_active); |
04837f64 | 4834 | |
57d17d70 | 4835 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4836 | hdev->acl_last_tx = jiffies; |
4837 | ||
4838 | hdev->acl_cnt--; | |
73d80deb LAD |
4839 | chan->sent++; |
4840 | chan->conn->sent++; | |
1da177e4 LT |
4841 | } |
4842 | } | |
02b20f0b LAD |
4843 | |
4844 | if (cnt != hdev->acl_cnt) | |
4845 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
4846 | } |
4847 | ||
6039aa73 | 4848 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 4849 | { |
63d2bc1b | 4850 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
4851 | struct hci_chan *chan; |
4852 | struct sk_buff *skb; | |
4853 | int quote; | |
bd1eb66b | 4854 | u8 type; |
b71d385a | 4855 | |
63d2bc1b | 4856 | __check_timeout(hdev, cnt); |
b71d385a | 4857 | |
bd1eb66b AE |
4858 | BT_DBG("%s", hdev->name); |
4859 | ||
4860 | if (hdev->dev_type == HCI_AMP) | |
4861 | type = AMP_LINK; | |
4862 | else | |
4863 | type = ACL_LINK; | |
4864 | ||
b71d385a | 4865 | while (hdev->block_cnt > 0 && |
bd1eb66b | 4866 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
4867 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4868 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
4869 | int blocks; | |
4870 | ||
4871 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 4872 | skb->len, skb->priority); |
b71d385a AE |
4873 | |
4874 | /* Stop if priority has changed */ | |
4875 | if (skb->priority < priority) | |
4876 | break; | |
4877 | ||
4878 | skb = skb_dequeue(&chan->data_q); | |
4879 | ||
4880 | blocks = __get_blocks(hdev, skb); | |
4881 | if (blocks > hdev->block_cnt) | |
4882 | return; | |
4883 | ||
4884 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 4885 | bt_cb(skb)->force_active); |
b71d385a | 4886 | |
57d17d70 | 4887 | hci_send_frame(hdev, skb); |
b71d385a AE |
4888 | hdev->acl_last_tx = jiffies; |
4889 | ||
4890 | hdev->block_cnt -= blocks; | |
4891 | quote -= blocks; | |
4892 | ||
4893 | chan->sent += blocks; | |
4894 | chan->conn->sent += blocks; | |
4895 | } | |
4896 | } | |
4897 | ||
4898 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 4899 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
4900 | } |
4901 | ||
6039aa73 | 4902 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
4903 | { |
4904 | BT_DBG("%s", hdev->name); | |
4905 | ||
bd1eb66b AE |
4906 | /* No ACL link over BR/EDR controller */ |
4907 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
4908 | return; | |
4909 | ||
4910 | /* No AMP link over AMP controller */ | |
4911 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
4912 | return; |
4913 | ||
4914 | switch (hdev->flow_ctl_mode) { | |
4915 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
4916 | hci_sched_acl_pkt(hdev); | |
4917 | break; | |
4918 | ||
4919 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
4920 | hci_sched_acl_blk(hdev); | |
4921 | break; | |
4922 | } | |
4923 | } | |
4924 | ||
1da177e4 | 4925 | /* Schedule SCO */ |
6039aa73 | 4926 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
4927 | { |
4928 | struct hci_conn *conn; | |
4929 | struct sk_buff *skb; | |
4930 | int quote; | |
4931 | ||
4932 | BT_DBG("%s", hdev->name); | |
4933 | ||
52087a79 LAD |
4934 | if (!hci_conn_num(hdev, SCO_LINK)) |
4935 | return; | |
4936 | ||
1da177e4 LT |
4937 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
4938 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
4939 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4940 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4941 | |
4942 | conn->sent++; | |
4943 | if (conn->sent == ~0) | |
4944 | conn->sent = 0; | |
4945 | } | |
4946 | } | |
4947 | } | |
4948 | ||
6039aa73 | 4949 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
4950 | { |
4951 | struct hci_conn *conn; | |
4952 | struct sk_buff *skb; | |
4953 | int quote; | |
4954 | ||
4955 | BT_DBG("%s", hdev->name); | |
4956 | ||
52087a79 LAD |
4957 | if (!hci_conn_num(hdev, ESCO_LINK)) |
4958 | return; | |
4959 | ||
8fc9ced3 GP |
4960 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
4961 | "e))) { | |
b6a0dc82 MH |
4962 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
4963 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4964 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
4965 | |
4966 | conn->sent++; | |
4967 | if (conn->sent == ~0) | |
4968 | conn->sent = 0; | |
4969 | } | |
4970 | } | |
4971 | } | |
4972 | ||
6039aa73 | 4973 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 4974 | { |
73d80deb | 4975 | struct hci_chan *chan; |
6ed58ec5 | 4976 | struct sk_buff *skb; |
02b20f0b | 4977 | int quote, cnt, tmp; |
6ed58ec5 VT |
4978 | |
4979 | BT_DBG("%s", hdev->name); | |
4980 | ||
52087a79 LAD |
4981 | if (!hci_conn_num(hdev, LE_LINK)) |
4982 | return; | |
4983 | ||
6ed58ec5 VT |
4984 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
4985 | /* LE tx timeout must be longer than maximum | |
4986 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 4987 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 4988 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 4989 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
4990 | } |
4991 | ||
4992 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 4993 | tmp = cnt; |
73d80deb | 4994 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
4995 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4996 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4997 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4998 | skb->len, skb->priority); |
6ed58ec5 | 4999 | |
ec1cce24 LAD |
5000 | /* Stop if priority has changed */ |
5001 | if (skb->priority < priority) | |
5002 | break; | |
5003 | ||
5004 | skb = skb_dequeue(&chan->data_q); | |
5005 | ||
57d17d70 | 5006 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
5007 | hdev->le_last_tx = jiffies; |
5008 | ||
5009 | cnt--; | |
73d80deb LAD |
5010 | chan->sent++; |
5011 | chan->conn->sent++; | |
6ed58ec5 VT |
5012 | } |
5013 | } | |
73d80deb | 5014 | |
6ed58ec5 VT |
5015 | if (hdev->le_pkts) |
5016 | hdev->le_cnt = cnt; | |
5017 | else | |
5018 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
5019 | |
5020 | if (cnt != tmp) | |
5021 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
5022 | } |
5023 | ||
3eff45ea | 5024 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 5025 | { |
3eff45ea | 5026 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
5027 | struct sk_buff *skb; |
5028 | ||
6ed58ec5 | 5029 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 5030 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 5031 | |
52de599e MH |
5032 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
5033 | /* Schedule queues and send stuff to HCI driver */ | |
5034 | hci_sched_acl(hdev); | |
5035 | hci_sched_sco(hdev); | |
5036 | hci_sched_esco(hdev); | |
5037 | hci_sched_le(hdev); | |
5038 | } | |
6ed58ec5 | 5039 | |
1da177e4 LT |
5040 | /* Send next queued raw (unknown type) packet */ |
5041 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 5042 | hci_send_frame(hdev, skb); |
1da177e4 LT |
5043 | } |
5044 | ||
25985edc | 5045 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
5046 | |
5047 | /* ACL data packet */ | |
6039aa73 | 5048 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
5049 | { |
5050 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
5051 | struct hci_conn *conn; | |
5052 | __u16 handle, flags; | |
5053 | ||
5054 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
5055 | ||
5056 | handle = __le16_to_cpu(hdr->handle); | |
5057 | flags = hci_flags(handle); | |
5058 | handle = hci_handle(handle); | |
5059 | ||
f0e09510 | 5060 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 5061 | handle, flags); |
1da177e4 LT |
5062 | |
5063 | hdev->stat.acl_rx++; | |
5064 | ||
5065 | hci_dev_lock(hdev); | |
5066 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
5067 | hci_dev_unlock(hdev); | |
8e87d142 | 5068 | |
1da177e4 | 5069 | if (conn) { |
65983fc7 | 5070 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 5071 | |
1da177e4 | 5072 | /* Send to upper protocol */ |
686ebf28 UF |
5073 | l2cap_recv_acldata(conn, skb, flags); |
5074 | return; | |
1da177e4 | 5075 | } else { |
8e87d142 | 5076 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 5077 | hdev->name, handle); |
1da177e4 LT |
5078 | } |
5079 | ||
5080 | kfree_skb(skb); | |
5081 | } | |
5082 | ||
5083 | /* SCO data packet */ | |
6039aa73 | 5084 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
5085 | { |
5086 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
5087 | struct hci_conn *conn; | |
5088 | __u16 handle; | |
5089 | ||
5090 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
5091 | ||
5092 | handle = __le16_to_cpu(hdr->handle); | |
5093 | ||
f0e09510 | 5094 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
5095 | |
5096 | hdev->stat.sco_rx++; | |
5097 | ||
5098 | hci_dev_lock(hdev); | |
5099 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
5100 | hci_dev_unlock(hdev); | |
5101 | ||
5102 | if (conn) { | |
1da177e4 | 5103 | /* Send to upper protocol */ |
686ebf28 UF |
5104 | sco_recv_scodata(conn, skb); |
5105 | return; | |
1da177e4 | 5106 | } else { |
8e87d142 | 5107 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 5108 | hdev->name, handle); |
1da177e4 LT |
5109 | } |
5110 | ||
5111 | kfree_skb(skb); | |
5112 | } | |
5113 | ||
9238f36a JH |
5114 | static bool hci_req_is_complete(struct hci_dev *hdev) |
5115 | { | |
5116 | struct sk_buff *skb; | |
5117 | ||
5118 | skb = skb_peek(&hdev->cmd_q); | |
5119 | if (!skb) | |
5120 | return true; | |
5121 | ||
5122 | return bt_cb(skb)->req.start; | |
5123 | } | |
5124 | ||
42c6b129 JH |
5125 | static void hci_resend_last(struct hci_dev *hdev) |
5126 | { | |
5127 | struct hci_command_hdr *sent; | |
5128 | struct sk_buff *skb; | |
5129 | u16 opcode; | |
5130 | ||
5131 | if (!hdev->sent_cmd) | |
5132 | return; | |
5133 | ||
5134 | sent = (void *) hdev->sent_cmd->data; | |
5135 | opcode = __le16_to_cpu(sent->opcode); | |
5136 | if (opcode == HCI_OP_RESET) | |
5137 | return; | |
5138 | ||
5139 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
5140 | if (!skb) | |
5141 | return; | |
5142 | ||
5143 | skb_queue_head(&hdev->cmd_q, skb); | |
5144 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
5145 | } | |
5146 | ||
9238f36a JH |
5147 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status) |
5148 | { | |
5149 | hci_req_complete_t req_complete = NULL; | |
5150 | struct sk_buff *skb; | |
5151 | unsigned long flags; | |
5152 | ||
5153 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
5154 | ||
42c6b129 JH |
5155 | /* If the completed command doesn't match the last one that was |
5156 | * sent we need to do special handling of it. | |
9238f36a | 5157 | */ |
42c6b129 JH |
5158 | if (!hci_sent_cmd_data(hdev, opcode)) { |
5159 | /* Some CSR based controllers generate a spontaneous | |
5160 | * reset complete event during init and any pending | |
5161 | * command will never be completed. In such a case we | |
5162 | * need to resend whatever was the last sent | |
5163 | * command. | |
5164 | */ | |
5165 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
5166 | hci_resend_last(hdev); | |
5167 | ||
9238f36a | 5168 | return; |
42c6b129 | 5169 | } |
9238f36a JH |
5170 | |
5171 | /* If the command succeeded and there's still more commands in | |
5172 | * this request the request is not yet complete. | |
5173 | */ | |
5174 | if (!status && !hci_req_is_complete(hdev)) | |
5175 | return; | |
5176 | ||
5177 | /* If this was the last command in a request the complete | |
5178 | * callback would be found in hdev->sent_cmd instead of the | |
5179 | * command queue (hdev->cmd_q). | |
5180 | */ | |
5181 | if (hdev->sent_cmd) { | |
5182 | req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
53e21fbc JH |
5183 | |
5184 | if (req_complete) { | |
5185 | /* We must set the complete callback to NULL to | |
5186 | * avoid calling the callback more than once if | |
5187 | * this function gets called again. | |
5188 | */ | |
5189 | bt_cb(hdev->sent_cmd)->req.complete = NULL; | |
5190 | ||
9238f36a | 5191 | goto call_complete; |
53e21fbc | 5192 | } |
9238f36a JH |
5193 | } |
5194 | ||
5195 | /* Remove all pending commands belonging to this request */ | |
5196 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
5197 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
5198 | if (bt_cb(skb)->req.start) { | |
5199 | __skb_queue_head(&hdev->cmd_q, skb); | |
5200 | break; | |
5201 | } | |
5202 | ||
5203 | req_complete = bt_cb(skb)->req.complete; | |
5204 | kfree_skb(skb); | |
5205 | } | |
5206 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
5207 | ||
5208 | call_complete: | |
5209 | if (req_complete) | |
5210 | req_complete(hdev, status); | |
5211 | } | |
5212 | ||
b78752cc | 5213 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 5214 | { |
b78752cc | 5215 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
5216 | struct sk_buff *skb; |
5217 | ||
5218 | BT_DBG("%s", hdev->name); | |
5219 | ||
1da177e4 | 5220 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
5221 | /* Send copy to monitor */ |
5222 | hci_send_to_monitor(hdev, skb); | |
5223 | ||
1da177e4 LT |
5224 | if (atomic_read(&hdev->promisc)) { |
5225 | /* Send copy to the sockets */ | |
470fe1b5 | 5226 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
5227 | } |
5228 | ||
0736cfa8 MH |
5229 | if (test_bit(HCI_RAW, &hdev->flags) || |
5230 | test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { | |
1da177e4 LT |
5231 | kfree_skb(skb); |
5232 | continue; | |
5233 | } | |
5234 | ||
5235 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
5236 | /* Don't process data packets in this states. */ | |
0d48d939 | 5237 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
5238 | case HCI_ACLDATA_PKT: |
5239 | case HCI_SCODATA_PKT: | |
5240 | kfree_skb(skb); | |
5241 | continue; | |
3ff50b79 | 5242 | } |
1da177e4 LT |
5243 | } |
5244 | ||
5245 | /* Process frame */ | |
0d48d939 | 5246 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 5247 | case HCI_EVENT_PKT: |
b78752cc | 5248 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
5249 | hci_event_packet(hdev, skb); |
5250 | break; | |
5251 | ||
5252 | case HCI_ACLDATA_PKT: | |
5253 | BT_DBG("%s ACL data packet", hdev->name); | |
5254 | hci_acldata_packet(hdev, skb); | |
5255 | break; | |
5256 | ||
5257 | case HCI_SCODATA_PKT: | |
5258 | BT_DBG("%s SCO data packet", hdev->name); | |
5259 | hci_scodata_packet(hdev, skb); | |
5260 | break; | |
5261 | ||
5262 | default: | |
5263 | kfree_skb(skb); | |
5264 | break; | |
5265 | } | |
5266 | } | |
1da177e4 LT |
5267 | } |
5268 | ||
c347b765 | 5269 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 5270 | { |
c347b765 | 5271 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
5272 | struct sk_buff *skb; |
5273 | ||
2104786b AE |
5274 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
5275 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 5276 | |
1da177e4 | 5277 | /* Send queued commands */ |
5a08ecce AE |
5278 | if (atomic_read(&hdev->cmd_cnt)) { |
5279 | skb = skb_dequeue(&hdev->cmd_q); | |
5280 | if (!skb) | |
5281 | return; | |
5282 | ||
7585b97a | 5283 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 5284 | |
a675d7f1 | 5285 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 5286 | if (hdev->sent_cmd) { |
1da177e4 | 5287 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 5288 | hci_send_frame(hdev, skb); |
7bdb8a5c SJ |
5289 | if (test_bit(HCI_RESET, &hdev->flags)) |
5290 | del_timer(&hdev->cmd_timer); | |
5291 | else | |
5292 | mod_timer(&hdev->cmd_timer, | |
5f246e89 | 5293 | jiffies + HCI_CMD_TIMEOUT); |
1da177e4 LT |
5294 | } else { |
5295 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 5296 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
5297 | } |
5298 | } | |
5299 | } | |
b1efcc28 AG |
5300 | |
5301 | void hci_req_add_le_scan_disable(struct hci_request *req) | |
5302 | { | |
5303 | struct hci_cp_le_set_scan_enable cp; | |
5304 | ||
5305 | memset(&cp, 0, sizeof(cp)); | |
5306 | cp.enable = LE_SCAN_DISABLE; | |
5307 | hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
5308 | } | |
a4790dbd | 5309 | |
8ef30fd3 AG |
5310 | void hci_req_add_le_passive_scan(struct hci_request *req) |
5311 | { | |
5312 | struct hci_cp_le_set_scan_param param_cp; | |
5313 | struct hci_cp_le_set_scan_enable enable_cp; | |
5314 | struct hci_dev *hdev = req->hdev; | |
5315 | u8 own_addr_type; | |
5316 | ||
5317 | /* Set require_privacy to true to avoid identification from | |
5318 | * unknown peer devices. Since this is passive scanning, no | |
5319 | * SCAN_REQ using the local identity should be sent. Mandating | |
5320 | * privacy is just an extra precaution. | |
5321 | */ | |
5322 | if (hci_update_random_address(req, true, &own_addr_type)) | |
5323 | return; | |
5324 | ||
5325 | memset(¶m_cp, 0, sizeof(param_cp)); | |
5326 | param_cp.type = LE_SCAN_PASSIVE; | |
5327 | param_cp.interval = cpu_to_le16(hdev->le_scan_interval); | |
5328 | param_cp.window = cpu_to_le16(hdev->le_scan_window); | |
5329 | param_cp.own_address_type = own_addr_type; | |
5330 | hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp), | |
5331 | ¶m_cp); | |
5332 | ||
5333 | memset(&enable_cp, 0, sizeof(enable_cp)); | |
5334 | enable_cp.enable = LE_SCAN_ENABLE; | |
4340a124 | 5335 | enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; |
8ef30fd3 AG |
5336 | hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp), |
5337 | &enable_cp); | |
5338 | } | |
5339 | ||
a4790dbd AG |
5340 | static void update_background_scan_complete(struct hci_dev *hdev, u8 status) |
5341 | { | |
5342 | if (status) | |
5343 | BT_DBG("HCI request failed to update background scanning: " | |
5344 | "status 0x%2.2x", status); | |
5345 | } | |
5346 | ||
5347 | /* This function controls the background scanning based on hdev->pend_le_conns | |
5348 | * list. If there are pending LE connection we start the background scanning, | |
5349 | * otherwise we stop it. | |
5350 | * | |
5351 | * This function requires the caller holds hdev->lock. | |
5352 | */ | |
5353 | void hci_update_background_scan(struct hci_dev *hdev) | |
5354 | { | |
a4790dbd AG |
5355 | struct hci_request req; |
5356 | struct hci_conn *conn; | |
5357 | int err; | |
5358 | ||
5359 | hci_req_init(&req, hdev); | |
5360 | ||
5361 | if (list_empty(&hdev->pend_le_conns)) { | |
5362 | /* If there is no pending LE connections, we should stop | |
5363 | * the background scanning. | |
5364 | */ | |
5365 | ||
5366 | /* If controller is not scanning we are done. */ | |
5367 | if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
5368 | return; | |
5369 | ||
5370 | hci_req_add_le_scan_disable(&req); | |
5371 | ||
5372 | BT_DBG("%s stopping background scanning", hdev->name); | |
5373 | } else { | |
a4790dbd AG |
5374 | /* If there is at least one pending LE connection, we should |
5375 | * keep the background scan running. | |
5376 | */ | |
5377 | ||
a4790dbd AG |
5378 | /* If controller is connecting, we should not start scanning |
5379 | * since some controllers are not able to scan and connect at | |
5380 | * the same time. | |
5381 | */ | |
5382 | conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT); | |
5383 | if (conn) | |
5384 | return; | |
5385 | ||
4340a124 AG |
5386 | /* If controller is currently scanning, we stop it to ensure we |
5387 | * don't miss any advertising (due to duplicates filter). | |
5388 | */ | |
5389 | if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) | |
5390 | hci_req_add_le_scan_disable(&req); | |
5391 | ||
8ef30fd3 | 5392 | hci_req_add_le_passive_scan(&req); |
a4790dbd AG |
5393 | |
5394 | BT_DBG("%s starting background scanning", hdev->name); | |
5395 | } | |
5396 | ||
5397 | err = hci_req_run(&req, update_background_scan_complete); | |
5398 | if (err) | |
5399 | BT_ERR("Failed to run HCI request: err %d", err); | |
5400 | } |