Commit | Line | Data |
---|---|---|
6a98e383 MH |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* | |
3 | * BlueZ - Bluetooth protocol stack for Linux | |
4 | * | |
5 | * Copyright (C) 2021 Intel Corporation | |
6 | */ | |
7 | ||
d0b13706 LAD |
8 | #include <linux/property.h> |
9 | ||
6a98e383 MH |
10 | #include <net/bluetooth/bluetooth.h> |
11 | #include <net/bluetooth/hci_core.h> | |
12 | #include <net/bluetooth/mgmt.h> | |
13 | ||
14 | #include "hci_request.h" | |
d0b13706 | 15 | #include "hci_debugfs.h" |
6a98e383 | 16 | #include "smp.h" |
161510cc | 17 | #include "eir.h" |
d0b13706 LAD |
18 | #include "msft.h" |
19 | #include "aosp.h" | |
20 | #include "leds.h" | |
6a98e383 MH |
21 | |
22 | static void hci_cmd_sync_complete(struct hci_dev *hdev, u8 result, u16 opcode, | |
23 | struct sk_buff *skb) | |
24 | { | |
25 | bt_dev_dbg(hdev, "result 0x%2.2x", result); | |
26 | ||
27 | if (hdev->req_status != HCI_REQ_PEND) | |
28 | return; | |
29 | ||
30 | hdev->req_result = result; | |
31 | hdev->req_status = HCI_REQ_DONE; | |
32 | ||
cba6b758 LAD |
33 | if (skb) { |
34 | struct sock *sk = hci_skb_sk(skb); | |
35 | ||
36 | /* Drop sk reference if set */ | |
37 | if (sk) | |
38 | sock_put(sk); | |
39 | ||
40 | hdev->req_skb = skb_get(skb); | |
41 | } | |
42 | ||
6a98e383 MH |
43 | wake_up_interruptible(&hdev->req_wait_q); |
44 | } | |
45 | ||
46 | static struct sk_buff *hci_cmd_sync_alloc(struct hci_dev *hdev, u16 opcode, | |
47 | u32 plen, const void *param, | |
48 | struct sock *sk) | |
49 | { | |
50 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
51 | struct hci_command_hdr *hdr; | |
52 | struct sk_buff *skb; | |
53 | ||
54 | skb = bt_skb_alloc(len, GFP_ATOMIC); | |
55 | if (!skb) | |
56 | return NULL; | |
57 | ||
58 | hdr = skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
59 | hdr->opcode = cpu_to_le16(opcode); | |
60 | hdr->plen = plen; | |
61 | ||
62 | if (plen) | |
63 | skb_put_data(skb, param, plen); | |
64 | ||
65 | bt_dev_dbg(hdev, "skb len %d", skb->len); | |
66 | ||
67 | hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; | |
68 | hci_skb_opcode(skb) = opcode; | |
69 | ||
cba6b758 LAD |
70 | /* Grab a reference if command needs to be associated with a sock (e.g. |
71 | * likely mgmt socket that initiated the command). | |
72 | */ | |
73 | if (sk) { | |
74 | hci_skb_sk(skb) = sk; | |
75 | sock_hold(sk); | |
76 | } | |
77 | ||
6a98e383 MH |
78 | return skb; |
79 | } | |
80 | ||
81 | static void hci_cmd_sync_add(struct hci_request *req, u16 opcode, u32 plen, | |
82 | const void *param, u8 event, struct sock *sk) | |
83 | { | |
84 | struct hci_dev *hdev = req->hdev; | |
85 | struct sk_buff *skb; | |
86 | ||
87 | bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen); | |
88 | ||
89 | /* If an error occurred during request building, there is no point in | |
90 | * queueing the HCI command. We can simply return. | |
91 | */ | |
92 | if (req->err) | |
93 | return; | |
94 | ||
95 | skb = hci_cmd_sync_alloc(hdev, opcode, plen, param, sk); | |
96 | if (!skb) { | |
97 | bt_dev_err(hdev, "no memory for command (opcode 0x%4.4x)", | |
98 | opcode); | |
99 | req->err = -ENOMEM; | |
100 | return; | |
101 | } | |
102 | ||
103 | if (skb_queue_empty(&req->cmd_q)) | |
104 | bt_cb(skb)->hci.req_flags |= HCI_REQ_START; | |
105 | ||
85b56857 | 106 | hci_skb_event(skb) = event; |
6a98e383 MH |
107 | |
108 | skb_queue_tail(&req->cmd_q, skb); | |
109 | } | |
110 | ||
111 | static int hci_cmd_sync_run(struct hci_request *req) | |
112 | { | |
113 | struct hci_dev *hdev = req->hdev; | |
114 | struct sk_buff *skb; | |
115 | unsigned long flags; | |
116 | ||
117 | bt_dev_dbg(hdev, "length %u", skb_queue_len(&req->cmd_q)); | |
118 | ||
119 | /* If an error occurred during request building, remove all HCI | |
120 | * commands queued on the HCI request queue. | |
121 | */ | |
122 | if (req->err) { | |
123 | skb_queue_purge(&req->cmd_q); | |
124 | return req->err; | |
125 | } | |
126 | ||
127 | /* Do not allow empty requests */ | |
128 | if (skb_queue_empty(&req->cmd_q)) | |
129 | return -ENODATA; | |
130 | ||
131 | skb = skb_peek_tail(&req->cmd_q); | |
132 | bt_cb(skb)->hci.req_complete_skb = hci_cmd_sync_complete; | |
133 | bt_cb(skb)->hci.req_flags |= HCI_REQ_SKB; | |
134 | ||
135 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
136 | skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q); | |
137 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
138 | ||
139 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
140 | ||
141 | return 0; | |
142 | } | |
143 | ||
144 | /* This function requires the caller holds hdev->req_lock. */ | |
145 | struct sk_buff *__hci_cmd_sync_sk(struct hci_dev *hdev, u16 opcode, u32 plen, | |
146 | const void *param, u8 event, u32 timeout, | |
147 | struct sock *sk) | |
148 | { | |
149 | struct hci_request req; | |
150 | struct sk_buff *skb; | |
151 | int err = 0; | |
152 | ||
d0b13706 | 153 | bt_dev_dbg(hdev, "Opcode 0x%4x", opcode); |
6a98e383 MH |
154 | |
155 | hci_req_init(&req, hdev); | |
156 | ||
157 | hci_cmd_sync_add(&req, opcode, plen, param, event, sk); | |
158 | ||
159 | hdev->req_status = HCI_REQ_PEND; | |
160 | ||
161 | err = hci_cmd_sync_run(&req); | |
162 | if (err < 0) | |
163 | return ERR_PTR(err); | |
164 | ||
165 | err = wait_event_interruptible_timeout(hdev->req_wait_q, | |
166 | hdev->req_status != HCI_REQ_PEND, | |
167 | timeout); | |
168 | ||
169 | if (err == -ERESTARTSYS) | |
170 | return ERR_PTR(-EINTR); | |
171 | ||
172 | switch (hdev->req_status) { | |
173 | case HCI_REQ_DONE: | |
174 | err = -bt_to_errno(hdev->req_result); | |
175 | break; | |
176 | ||
177 | case HCI_REQ_CANCELED: | |
178 | err = -hdev->req_result; | |
179 | break; | |
180 | ||
181 | default: | |
182 | err = -ETIMEDOUT; | |
183 | break; | |
184 | } | |
185 | ||
186 | hdev->req_status = 0; | |
187 | hdev->req_result = 0; | |
188 | skb = hdev->req_skb; | |
189 | hdev->req_skb = NULL; | |
190 | ||
191 | bt_dev_dbg(hdev, "end: err %d", err); | |
192 | ||
193 | if (err < 0) { | |
194 | kfree_skb(skb); | |
195 | return ERR_PTR(err); | |
196 | } | |
197 | ||
6a98e383 MH |
198 | return skb; |
199 | } | |
200 | EXPORT_SYMBOL(__hci_cmd_sync_sk); | |
201 | ||
202 | /* This function requires the caller holds hdev->req_lock. */ | |
203 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
204 | const void *param, u32 timeout) | |
205 | { | |
206 | return __hci_cmd_sync_sk(hdev, opcode, plen, param, 0, timeout, NULL); | |
207 | } | |
208 | EXPORT_SYMBOL(__hci_cmd_sync); | |
209 | ||
210 | /* Send HCI command and wait for command complete event */ | |
211 | struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
212 | const void *param, u32 timeout) | |
213 | { | |
214 | struct sk_buff *skb; | |
215 | ||
216 | if (!test_bit(HCI_UP, &hdev->flags)) | |
217 | return ERR_PTR(-ENETDOWN); | |
218 | ||
219 | bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen); | |
220 | ||
221 | hci_req_sync_lock(hdev); | |
222 | skb = __hci_cmd_sync(hdev, opcode, plen, param, timeout); | |
223 | hci_req_sync_unlock(hdev); | |
224 | ||
225 | return skb; | |
226 | } | |
227 | EXPORT_SYMBOL(hci_cmd_sync); | |
228 | ||
229 | /* This function requires the caller holds hdev->req_lock. */ | |
230 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, | |
231 | const void *param, u8 event, u32 timeout) | |
232 | { | |
233 | return __hci_cmd_sync_sk(hdev, opcode, plen, param, event, timeout, | |
234 | NULL); | |
235 | } | |
236 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
237 | ||
238 | /* This function requires the caller holds hdev->req_lock. */ | |
239 | int __hci_cmd_sync_status_sk(struct hci_dev *hdev, u16 opcode, u32 plen, | |
240 | const void *param, u8 event, u32 timeout, | |
241 | struct sock *sk) | |
242 | { | |
243 | struct sk_buff *skb; | |
244 | u8 status; | |
245 | ||
246 | skb = __hci_cmd_sync_sk(hdev, opcode, plen, param, event, timeout, sk); | |
abfeea47 | 247 | if (IS_ERR(skb)) { |
6a98e383 MH |
248 | bt_dev_err(hdev, "Opcode 0x%4x failed: %ld", opcode, |
249 | PTR_ERR(skb)); | |
250 | return PTR_ERR(skb); | |
251 | } | |
252 | ||
abfeea47 LAD |
253 | /* If command return a status event skb will be set to NULL as there are |
254 | * no parameters, in case of failure IS_ERR(skb) would have be set to | |
255 | * the actual error would be found with PTR_ERR(skb). | |
256 | */ | |
257 | if (!skb) | |
258 | return 0; | |
259 | ||
6a98e383 MH |
260 | status = skb->data[0]; |
261 | ||
262 | kfree_skb(skb); | |
263 | ||
264 | return status; | |
265 | } | |
266 | EXPORT_SYMBOL(__hci_cmd_sync_status_sk); | |
267 | ||
268 | int __hci_cmd_sync_status(struct hci_dev *hdev, u16 opcode, u32 plen, | |
269 | const void *param, u32 timeout) | |
270 | { | |
271 | return __hci_cmd_sync_status_sk(hdev, opcode, plen, param, 0, timeout, | |
272 | NULL); | |
273 | } | |
274 | EXPORT_SYMBOL(__hci_cmd_sync_status); | |
275 | ||
276 | static void hci_cmd_sync_work(struct work_struct *work) | |
277 | { | |
278 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_sync_work); | |
6a98e383 MH |
279 | |
280 | bt_dev_dbg(hdev, ""); | |
281 | ||
008ee9eb LAD |
282 | /* Dequeue all entries and run them */ |
283 | while (1) { | |
284 | struct hci_cmd_sync_work_entry *entry; | |
6a98e383 | 285 | |
008ee9eb LAD |
286 | mutex_lock(&hdev->cmd_sync_work_lock); |
287 | entry = list_first_entry_or_null(&hdev->cmd_sync_work_list, | |
288 | struct hci_cmd_sync_work_entry, | |
289 | list); | |
290 | if (entry) | |
291 | list_del(&entry->list); | |
292 | mutex_unlock(&hdev->cmd_sync_work_lock); | |
6a98e383 | 293 | |
008ee9eb LAD |
294 | if (!entry) |
295 | break; | |
6a98e383 | 296 | |
008ee9eb | 297 | bt_dev_dbg(hdev, "entry %p", entry); |
6a98e383 | 298 | |
008ee9eb LAD |
299 | if (entry->func) { |
300 | int err; | |
6a98e383 | 301 | |
008ee9eb LAD |
302 | hci_req_sync_lock(hdev); |
303 | err = entry->func(hdev, entry->data); | |
304 | if (entry->destroy) | |
305 | entry->destroy(hdev, entry->data, err); | |
306 | hci_req_sync_unlock(hdev); | |
307 | } | |
308 | ||
309 | kfree(entry); | |
6a98e383 MH |
310 | } |
311 | } | |
312 | ||
744451c1 BB |
313 | static void hci_cmd_sync_cancel_work(struct work_struct *work) |
314 | { | |
315 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_sync_cancel_work); | |
316 | ||
317 | cancel_delayed_work_sync(&hdev->cmd_timer); | |
318 | cancel_delayed_work_sync(&hdev->ncmd_timer); | |
319 | atomic_set(&hdev->cmd_cnt, 1); | |
320 | ||
321 | wake_up_interruptible(&hdev->req_wait_q); | |
322 | } | |
323 | ||
6a98e383 MH |
324 | void hci_cmd_sync_init(struct hci_dev *hdev) |
325 | { | |
326 | INIT_WORK(&hdev->cmd_sync_work, hci_cmd_sync_work); | |
327 | INIT_LIST_HEAD(&hdev->cmd_sync_work_list); | |
328 | mutex_init(&hdev->cmd_sync_work_lock); | |
744451c1 BB |
329 | |
330 | INIT_WORK(&hdev->cmd_sync_cancel_work, hci_cmd_sync_cancel_work); | |
6a98e383 MH |
331 | } |
332 | ||
333 | void hci_cmd_sync_clear(struct hci_dev *hdev) | |
334 | { | |
335 | struct hci_cmd_sync_work_entry *entry, *tmp; | |
336 | ||
337 | cancel_work_sync(&hdev->cmd_sync_work); | |
338 | ||
339 | list_for_each_entry_safe(entry, tmp, &hdev->cmd_sync_work_list, list) { | |
340 | if (entry->destroy) | |
341 | entry->destroy(hdev, entry->data, -ECANCELED); | |
342 | ||
343 | list_del(&entry->list); | |
344 | kfree(entry); | |
345 | } | |
346 | } | |
347 | ||
744451c1 | 348 | void __hci_cmd_sync_cancel(struct hci_dev *hdev, int err) |
914b08b3 BB |
349 | { |
350 | bt_dev_dbg(hdev, "err 0x%2.2x", err); | |
351 | ||
352 | if (hdev->req_status == HCI_REQ_PEND) { | |
353 | hdev->req_result = err; | |
354 | hdev->req_status = HCI_REQ_CANCELED; | |
355 | ||
356 | cancel_delayed_work_sync(&hdev->cmd_timer); | |
357 | cancel_delayed_work_sync(&hdev->ncmd_timer); | |
358 | atomic_set(&hdev->cmd_cnt, 1); | |
359 | ||
360 | wake_up_interruptible(&hdev->req_wait_q); | |
361 | } | |
362 | } | |
744451c1 BB |
363 | |
364 | void hci_cmd_sync_cancel(struct hci_dev *hdev, int err) | |
365 | { | |
366 | bt_dev_dbg(hdev, "err 0x%2.2x", err); | |
367 | ||
368 | if (hdev->req_status == HCI_REQ_PEND) { | |
369 | hdev->req_result = err; | |
370 | hdev->req_status = HCI_REQ_CANCELED; | |
371 | ||
372 | queue_work(hdev->workqueue, &hdev->cmd_sync_cancel_work); | |
373 | } | |
374 | } | |
914b08b3 BB |
375 | EXPORT_SYMBOL(hci_cmd_sync_cancel); |
376 | ||
6a98e383 MH |
377 | int hci_cmd_sync_queue(struct hci_dev *hdev, hci_cmd_sync_work_func_t func, |
378 | void *data, hci_cmd_sync_work_destroy_t destroy) | |
379 | { | |
380 | struct hci_cmd_sync_work_entry *entry; | |
381 | ||
0b94f265 LAD |
382 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) |
383 | return -ENODEV; | |
384 | ||
6a98e383 MH |
385 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); |
386 | if (!entry) | |
387 | return -ENOMEM; | |
388 | ||
389 | entry->func = func; | |
390 | entry->data = data; | |
391 | entry->destroy = destroy; | |
392 | ||
393 | mutex_lock(&hdev->cmd_sync_work_lock); | |
394 | list_add_tail(&entry->list, &hdev->cmd_sync_work_list); | |
395 | mutex_unlock(&hdev->cmd_sync_work_lock); | |
396 | ||
397 | queue_work(hdev->req_workqueue, &hdev->cmd_sync_work); | |
398 | ||
399 | return 0; | |
400 | } | |
401 | EXPORT_SYMBOL(hci_cmd_sync_queue); | |
161510cc LAD |
402 | |
403 | int hci_update_eir_sync(struct hci_dev *hdev) | |
404 | { | |
405 | struct hci_cp_write_eir cp; | |
406 | ||
407 | bt_dev_dbg(hdev, ""); | |
408 | ||
409 | if (!hdev_is_powered(hdev)) | |
410 | return 0; | |
411 | ||
412 | if (!lmp_ext_inq_capable(hdev)) | |
413 | return 0; | |
414 | ||
415 | if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) | |
416 | return 0; | |
417 | ||
418 | if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE)) | |
419 | return 0; | |
420 | ||
421 | memset(&cp, 0, sizeof(cp)); | |
422 | ||
423 | eir_create(hdev, cp.data); | |
424 | ||
425 | if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0) | |
426 | return 0; | |
427 | ||
428 | memcpy(hdev->eir, cp.data, sizeof(cp.data)); | |
429 | ||
430 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp, | |
431 | HCI_CMD_TIMEOUT); | |
432 | } | |
433 | ||
434 | static u8 get_service_classes(struct hci_dev *hdev) | |
435 | { | |
436 | struct bt_uuid *uuid; | |
437 | u8 val = 0; | |
438 | ||
439 | list_for_each_entry(uuid, &hdev->uuids, list) | |
440 | val |= uuid->svc_hint; | |
441 | ||
442 | return val; | |
443 | } | |
444 | ||
445 | int hci_update_class_sync(struct hci_dev *hdev) | |
446 | { | |
447 | u8 cod[3]; | |
448 | ||
449 | bt_dev_dbg(hdev, ""); | |
450 | ||
451 | if (!hdev_is_powered(hdev)) | |
452 | return 0; | |
453 | ||
454 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) | |
455 | return 0; | |
456 | ||
457 | if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE)) | |
458 | return 0; | |
459 | ||
460 | cod[0] = hdev->minor_class; | |
461 | cod[1] = hdev->major_class; | |
462 | cod[2] = get_service_classes(hdev); | |
463 | ||
464 | if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) | |
465 | cod[1] |= 0x20; | |
466 | ||
467 | if (memcmp(cod, hdev->dev_class, 3) == 0) | |
468 | return 0; | |
469 | ||
470 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CLASS_OF_DEV, | |
471 | sizeof(cod), cod, HCI_CMD_TIMEOUT); | |
472 | } | |
cba6b758 LAD |
473 | |
474 | static bool is_advertising_allowed(struct hci_dev *hdev, bool connectable) | |
475 | { | |
476 | /* If there is no connection we are OK to advertise. */ | |
477 | if (hci_conn_num(hdev, LE_LINK) == 0) | |
478 | return true; | |
479 | ||
480 | /* Check le_states if there is any connection in peripheral role. */ | |
481 | if (hdev->conn_hash.le_num_peripheral > 0) { | |
482 | /* Peripheral connection state and non connectable mode | |
483 | * bit 20. | |
484 | */ | |
485 | if (!connectable && !(hdev->le_states[2] & 0x10)) | |
486 | return false; | |
487 | ||
488 | /* Peripheral connection state and connectable mode bit 38 | |
489 | * and scannable bit 21. | |
490 | */ | |
491 | if (connectable && (!(hdev->le_states[4] & 0x40) || | |
492 | !(hdev->le_states[2] & 0x20))) | |
493 | return false; | |
494 | } | |
495 | ||
496 | /* Check le_states if there is any connection in central role. */ | |
497 | if (hci_conn_num(hdev, LE_LINK) != hdev->conn_hash.le_num_peripheral) { | |
498 | /* Central connection state and non connectable mode bit 18. */ | |
499 | if (!connectable && !(hdev->le_states[2] & 0x02)) | |
500 | return false; | |
501 | ||
502 | /* Central connection state and connectable mode bit 35 and | |
503 | * scannable 19. | |
504 | */ | |
505 | if (connectable && (!(hdev->le_states[4] & 0x08) || | |
506 | !(hdev->le_states[2] & 0x08))) | |
507 | return false; | |
508 | } | |
509 | ||
510 | return true; | |
511 | } | |
512 | ||
513 | static bool adv_use_rpa(struct hci_dev *hdev, uint32_t flags) | |
514 | { | |
515 | /* If privacy is not enabled don't use RPA */ | |
516 | if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) | |
517 | return false; | |
518 | ||
519 | /* If basic privacy mode is enabled use RPA */ | |
520 | if (!hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY)) | |
521 | return true; | |
522 | ||
523 | /* If limited privacy mode is enabled don't use RPA if we're | |
524 | * both discoverable and bondable. | |
525 | */ | |
526 | if ((flags & MGMT_ADV_FLAG_DISCOV) && | |
527 | hci_dev_test_flag(hdev, HCI_BONDABLE)) | |
528 | return false; | |
529 | ||
530 | /* We're neither bondable nor discoverable in the limited | |
531 | * privacy mode, therefore use RPA. | |
532 | */ | |
533 | return true; | |
534 | } | |
535 | ||
536 | static int hci_set_random_addr_sync(struct hci_dev *hdev, bdaddr_t *rpa) | |
537 | { | |
538 | /* If we're advertising or initiating an LE connection we can't | |
539 | * go ahead and change the random address at this time. This is | |
540 | * because the eventual initiator address used for the | |
541 | * subsequently created connection will be undefined (some | |
542 | * controllers use the new address and others the one we had | |
543 | * when the operation started). | |
544 | * | |
545 | * In this kind of scenario skip the update and let the random | |
546 | * address be updated at the next cycle. | |
547 | */ | |
548 | if (hci_dev_test_flag(hdev, HCI_LE_ADV) || | |
549 | hci_lookup_le_connect(hdev)) { | |
550 | bt_dev_dbg(hdev, "Deferring random address update"); | |
551 | hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); | |
552 | return 0; | |
553 | } | |
554 | ||
555 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_RANDOM_ADDR, | |
556 | 6, rpa, HCI_CMD_TIMEOUT); | |
557 | } | |
558 | ||
559 | int hci_update_random_address_sync(struct hci_dev *hdev, bool require_privacy, | |
560 | bool rpa, u8 *own_addr_type) | |
561 | { | |
562 | int err; | |
563 | ||
564 | /* If privacy is enabled use a resolvable private address. If | |
565 | * current RPA has expired or there is something else than | |
566 | * the current RPA in use, then generate a new one. | |
567 | */ | |
568 | if (rpa) { | |
569 | /* If Controller supports LL Privacy use own address type is | |
570 | * 0x03 | |
571 | */ | |
ad383c2c | 572 | if (use_ll_privacy(hdev)) |
cba6b758 LAD |
573 | *own_addr_type = ADDR_LE_DEV_RANDOM_RESOLVED; |
574 | else | |
575 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
576 | ||
577 | /* Check if RPA is valid */ | |
578 | if (rpa_valid(hdev)) | |
579 | return 0; | |
580 | ||
581 | err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa); | |
582 | if (err < 0) { | |
583 | bt_dev_err(hdev, "failed to generate new RPA"); | |
584 | return err; | |
585 | } | |
586 | ||
587 | err = hci_set_random_addr_sync(hdev, &hdev->rpa); | |
588 | if (err) | |
589 | return err; | |
590 | ||
591 | return 0; | |
592 | } | |
593 | ||
594 | /* In case of required privacy without resolvable private address, | |
595 | * use an non-resolvable private address. This is useful for active | |
596 | * scanning and non-connectable advertising. | |
597 | */ | |
598 | if (require_privacy) { | |
599 | bdaddr_t nrpa; | |
600 | ||
601 | while (true) { | |
602 | /* The non-resolvable private address is generated | |
603 | * from random six bytes with the two most significant | |
604 | * bits cleared. | |
605 | */ | |
606 | get_random_bytes(&nrpa, 6); | |
607 | nrpa.b[5] &= 0x3f; | |
608 | ||
609 | /* The non-resolvable private address shall not be | |
610 | * equal to the public address. | |
611 | */ | |
612 | if (bacmp(&hdev->bdaddr, &nrpa)) | |
613 | break; | |
614 | } | |
615 | ||
616 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
617 | ||
618 | return hci_set_random_addr_sync(hdev, &nrpa); | |
619 | } | |
620 | ||
621 | /* If forcing static address is in use or there is no public | |
622 | * address use the static address as random address (but skip | |
623 | * the HCI command if the current random address is already the | |
624 | * static one. | |
625 | * | |
626 | * In case BR/EDR has been disabled on a dual-mode controller | |
627 | * and a static address has been configured, then use that | |
628 | * address instead of the public BR/EDR address. | |
629 | */ | |
630 | if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || | |
631 | !bacmp(&hdev->bdaddr, BDADDR_ANY) || | |
632 | (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && | |
633 | bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
634 | *own_addr_type = ADDR_LE_DEV_RANDOM; | |
635 | if (bacmp(&hdev->static_addr, &hdev->random_addr)) | |
636 | return hci_set_random_addr_sync(hdev, | |
637 | &hdev->static_addr); | |
638 | return 0; | |
639 | } | |
640 | ||
641 | /* Neither privacy nor static address is being used so use a | |
642 | * public address. | |
643 | */ | |
644 | *own_addr_type = ADDR_LE_DEV_PUBLIC; | |
645 | ||
646 | return 0; | |
647 | } | |
648 | ||
649 | static int hci_disable_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance) | |
650 | { | |
651 | struct hci_cp_le_set_ext_adv_enable *cp; | |
652 | struct hci_cp_ext_adv_set *set; | |
653 | u8 data[sizeof(*cp) + sizeof(*set) * 1]; | |
654 | u8 size; | |
655 | ||
656 | /* If request specifies an instance that doesn't exist, fail */ | |
657 | if (instance > 0) { | |
658 | struct adv_info *adv; | |
659 | ||
660 | adv = hci_find_adv_instance(hdev, instance); | |
661 | if (!adv) | |
662 | return -EINVAL; | |
663 | ||
664 | /* If not enabled there is nothing to do */ | |
665 | if (!adv->enabled) | |
666 | return 0; | |
667 | } | |
668 | ||
669 | memset(data, 0, sizeof(data)); | |
670 | ||
671 | cp = (void *)data; | |
672 | set = (void *)cp->data; | |
673 | ||
674 | /* Instance 0x00 indicates all advertising instances will be disabled */ | |
675 | cp->num_of_sets = !!instance; | |
676 | cp->enable = 0x00; | |
677 | ||
678 | set->handle = instance; | |
679 | ||
680 | size = sizeof(*cp) + sizeof(*set) * cp->num_of_sets; | |
681 | ||
682 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE, | |
683 | size, data, HCI_CMD_TIMEOUT); | |
684 | } | |
685 | ||
686 | static int hci_set_adv_set_random_addr_sync(struct hci_dev *hdev, u8 instance, | |
687 | bdaddr_t *random_addr) | |
688 | { | |
689 | struct hci_cp_le_set_adv_set_rand_addr cp; | |
690 | int err; | |
691 | ||
692 | if (!instance) { | |
693 | /* Instance 0x00 doesn't have an adv_info, instead it uses | |
694 | * hdev->random_addr to track its address so whenever it needs | |
695 | * to be updated this also set the random address since | |
696 | * hdev->random_addr is shared with scan state machine. | |
697 | */ | |
698 | err = hci_set_random_addr_sync(hdev, random_addr); | |
699 | if (err) | |
700 | return err; | |
701 | } | |
702 | ||
703 | memset(&cp, 0, sizeof(cp)); | |
704 | ||
705 | cp.handle = instance; | |
706 | bacpy(&cp.bdaddr, random_addr); | |
707 | ||
708 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR, | |
709 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
710 | } | |
711 | ||
712 | int hci_setup_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance) | |
713 | { | |
714 | struct hci_cp_le_set_ext_adv_params cp; | |
715 | bool connectable; | |
716 | u32 flags; | |
717 | bdaddr_t random_addr; | |
718 | u8 own_addr_type; | |
719 | int err; | |
720 | struct adv_info *adv; | |
721 | bool secondary_adv; | |
722 | ||
723 | if (instance > 0) { | |
724 | adv = hci_find_adv_instance(hdev, instance); | |
725 | if (!adv) | |
726 | return -EINVAL; | |
727 | } else { | |
728 | adv = NULL; | |
729 | } | |
730 | ||
731 | /* Updating parameters of an active instance will return a | |
732 | * Command Disallowed error, so we must first disable the | |
733 | * instance if it is active. | |
734 | */ | |
735 | if (adv && !adv->pending) { | |
736 | err = hci_disable_ext_adv_instance_sync(hdev, instance); | |
737 | if (err) | |
738 | return err; | |
739 | } | |
740 | ||
741 | flags = hci_adv_instance_flags(hdev, instance); | |
742 | ||
743 | /* If the "connectable" instance flag was not set, then choose between | |
744 | * ADV_IND and ADV_NONCONN_IND based on the global connectable setting. | |
745 | */ | |
746 | connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) || | |
747 | mgmt_get_connectable(hdev); | |
748 | ||
749 | if (!is_advertising_allowed(hdev, connectable)) | |
750 | return -EPERM; | |
751 | ||
752 | /* Set require_privacy to true only when non-connectable | |
753 | * advertising is used. In that case it is fine to use a | |
754 | * non-resolvable private address. | |
755 | */ | |
756 | err = hci_get_random_address(hdev, !connectable, | |
757 | adv_use_rpa(hdev, flags), adv, | |
758 | &own_addr_type, &random_addr); | |
759 | if (err < 0) | |
760 | return err; | |
761 | ||
762 | memset(&cp, 0, sizeof(cp)); | |
763 | ||
764 | if (adv) { | |
765 | hci_cpu_to_le24(adv->min_interval, cp.min_interval); | |
766 | hci_cpu_to_le24(adv->max_interval, cp.max_interval); | |
767 | cp.tx_power = adv->tx_power; | |
768 | } else { | |
769 | hci_cpu_to_le24(hdev->le_adv_min_interval, cp.min_interval); | |
770 | hci_cpu_to_le24(hdev->le_adv_max_interval, cp.max_interval); | |
771 | cp.tx_power = HCI_ADV_TX_POWER_NO_PREFERENCE; | |
772 | } | |
773 | ||
774 | secondary_adv = (flags & MGMT_ADV_FLAG_SEC_MASK); | |
775 | ||
776 | if (connectable) { | |
777 | if (secondary_adv) | |
778 | cp.evt_properties = cpu_to_le16(LE_EXT_ADV_CONN_IND); | |
779 | else | |
780 | cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_IND); | |
781 | } else if (hci_adv_instance_is_scannable(hdev, instance) || | |
782 | (flags & MGMT_ADV_PARAM_SCAN_RSP)) { | |
783 | if (secondary_adv) | |
784 | cp.evt_properties = cpu_to_le16(LE_EXT_ADV_SCAN_IND); | |
785 | else | |
786 | cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_SCAN_IND); | |
787 | } else { | |
788 | if (secondary_adv) | |
789 | cp.evt_properties = cpu_to_le16(LE_EXT_ADV_NON_CONN_IND); | |
790 | else | |
791 | cp.evt_properties = cpu_to_le16(LE_LEGACY_NONCONN_IND); | |
792 | } | |
793 | ||
cf75ad8b LAD |
794 | /* If Own_Address_Type equals 0x02 or 0x03, the Peer_Address parameter |
795 | * contains the peer’s Identity Address and the Peer_Address_Type | |
796 | * parameter contains the peer’s Identity Type (i.e., 0x00 or 0x01). | |
797 | * These parameters are used to locate the corresponding local IRK in | |
798 | * the resolving list; this IRK is used to generate their own address | |
799 | * used in the advertisement. | |
800 | */ | |
801 | if (own_addr_type == ADDR_LE_DEV_RANDOM_RESOLVED) | |
802 | hci_copy_identity_address(hdev, &cp.peer_addr, | |
803 | &cp.peer_addr_type); | |
804 | ||
cba6b758 LAD |
805 | cp.own_addr_type = own_addr_type; |
806 | cp.channel_map = hdev->le_adv_channel_map; | |
807 | cp.handle = instance; | |
808 | ||
809 | if (flags & MGMT_ADV_FLAG_SEC_2M) { | |
810 | cp.primary_phy = HCI_ADV_PHY_1M; | |
811 | cp.secondary_phy = HCI_ADV_PHY_2M; | |
812 | } else if (flags & MGMT_ADV_FLAG_SEC_CODED) { | |
813 | cp.primary_phy = HCI_ADV_PHY_CODED; | |
814 | cp.secondary_phy = HCI_ADV_PHY_CODED; | |
815 | } else { | |
816 | /* In all other cases use 1M */ | |
817 | cp.primary_phy = HCI_ADV_PHY_1M; | |
818 | cp.secondary_phy = HCI_ADV_PHY_1M; | |
819 | } | |
820 | ||
821 | err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS, | |
822 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
823 | if (err) | |
824 | return err; | |
825 | ||
826 | if ((own_addr_type == ADDR_LE_DEV_RANDOM || | |
827 | own_addr_type == ADDR_LE_DEV_RANDOM_RESOLVED) && | |
828 | bacmp(&random_addr, BDADDR_ANY)) { | |
829 | /* Check if random address need to be updated */ | |
830 | if (adv) { | |
831 | if (!bacmp(&random_addr, &adv->random_addr)) | |
832 | return 0; | |
833 | } else { | |
834 | if (!bacmp(&random_addr, &hdev->random_addr)) | |
835 | return 0; | |
836 | } | |
837 | ||
838 | return hci_set_adv_set_random_addr_sync(hdev, instance, | |
839 | &random_addr); | |
840 | } | |
841 | ||
842 | return 0; | |
843 | } | |
844 | ||
845 | static int hci_set_ext_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance) | |
846 | { | |
847 | struct { | |
848 | struct hci_cp_le_set_ext_scan_rsp_data cp; | |
849 | u8 data[HCI_MAX_EXT_AD_LENGTH]; | |
850 | } pdu; | |
851 | u8 len; | |
34a718bc LAD |
852 | struct adv_info *adv = NULL; |
853 | int err; | |
cba6b758 LAD |
854 | |
855 | memset(&pdu, 0, sizeof(pdu)); | |
856 | ||
34a718bc LAD |
857 | if (instance) { |
858 | adv = hci_find_adv_instance(hdev, instance); | |
859 | if (!adv || !adv->scan_rsp_changed) | |
860 | return 0; | |
861 | } | |
cba6b758 | 862 | |
34a718bc | 863 | len = eir_create_scan_rsp(hdev, instance, pdu.data); |
cba6b758 LAD |
864 | |
865 | pdu.cp.handle = instance; | |
866 | pdu.cp.length = len; | |
867 | pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE; | |
868 | pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG; | |
869 | ||
34a718bc LAD |
870 | err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_RSP_DATA, |
871 | sizeof(pdu.cp) + len, &pdu.cp, | |
872 | HCI_CMD_TIMEOUT); | |
873 | if (err) | |
874 | return err; | |
875 | ||
876 | if (adv) { | |
877 | adv->scan_rsp_changed = false; | |
878 | } else { | |
879 | memcpy(hdev->scan_rsp_data, pdu.data, len); | |
880 | hdev->scan_rsp_data_len = len; | |
881 | } | |
882 | ||
883 | return 0; | |
cba6b758 LAD |
884 | } |
885 | ||
886 | static int __hci_set_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance) | |
887 | { | |
888 | struct hci_cp_le_set_scan_rsp_data cp; | |
889 | u8 len; | |
890 | ||
891 | memset(&cp, 0, sizeof(cp)); | |
892 | ||
893 | len = eir_create_scan_rsp(hdev, instance, cp.data); | |
894 | ||
895 | if (hdev->scan_rsp_data_len == len && | |
896 | !memcmp(cp.data, hdev->scan_rsp_data, len)) | |
897 | return 0; | |
898 | ||
899 | memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data)); | |
900 | hdev->scan_rsp_data_len = len; | |
901 | ||
902 | cp.length = len; | |
903 | ||
904 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_RSP_DATA, | |
905 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
906 | } | |
907 | ||
908 | int hci_update_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance) | |
909 | { | |
910 | if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) | |
911 | return 0; | |
912 | ||
913 | if (ext_adv_capable(hdev)) | |
914 | return hci_set_ext_scan_rsp_data_sync(hdev, instance); | |
915 | ||
916 | return __hci_set_scan_rsp_data_sync(hdev, instance); | |
917 | } | |
918 | ||
919 | int hci_enable_ext_advertising_sync(struct hci_dev *hdev, u8 instance) | |
920 | { | |
921 | struct hci_cp_le_set_ext_adv_enable *cp; | |
922 | struct hci_cp_ext_adv_set *set; | |
923 | u8 data[sizeof(*cp) + sizeof(*set) * 1]; | |
924 | struct adv_info *adv; | |
925 | ||
926 | if (instance > 0) { | |
927 | adv = hci_find_adv_instance(hdev, instance); | |
928 | if (!adv) | |
929 | return -EINVAL; | |
930 | /* If already enabled there is nothing to do */ | |
931 | if (adv->enabled) | |
932 | return 0; | |
933 | } else { | |
934 | adv = NULL; | |
935 | } | |
936 | ||
937 | cp = (void *)data; | |
938 | set = (void *)cp->data; | |
939 | ||
940 | memset(cp, 0, sizeof(*cp)); | |
941 | ||
942 | cp->enable = 0x01; | |
943 | cp->num_of_sets = 0x01; | |
944 | ||
945 | memset(set, 0, sizeof(*set)); | |
946 | ||
947 | set->handle = instance; | |
948 | ||
949 | /* Set duration per instance since controller is responsible for | |
950 | * scheduling it. | |
951 | */ | |
f16a491c | 952 | if (adv && adv->timeout) { |
cba6b758 LAD |
953 | u16 duration = adv->timeout * MSEC_PER_SEC; |
954 | ||
955 | /* Time = N * 10 ms */ | |
956 | set->duration = cpu_to_le16(duration / 10); | |
957 | } | |
958 | ||
959 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE, | |
960 | sizeof(*cp) + | |
961 | sizeof(*set) * cp->num_of_sets, | |
962 | data, HCI_CMD_TIMEOUT); | |
963 | } | |
964 | ||
965 | int hci_start_ext_adv_sync(struct hci_dev *hdev, u8 instance) | |
966 | { | |
967 | int err; | |
968 | ||
969 | err = hci_setup_ext_adv_instance_sync(hdev, instance); | |
970 | if (err) | |
971 | return err; | |
972 | ||
973 | err = hci_set_ext_scan_rsp_data_sync(hdev, instance); | |
974 | if (err) | |
975 | return err; | |
976 | ||
977 | return hci_enable_ext_advertising_sync(hdev, instance); | |
978 | } | |
979 | ||
980 | static int hci_start_adv_sync(struct hci_dev *hdev, u8 instance) | |
981 | { | |
982 | int err; | |
983 | ||
984 | if (ext_adv_capable(hdev)) | |
985 | return hci_start_ext_adv_sync(hdev, instance); | |
986 | ||
987 | err = hci_update_adv_data_sync(hdev, instance); | |
988 | if (err) | |
989 | return err; | |
990 | ||
991 | err = hci_update_scan_rsp_data_sync(hdev, instance); | |
992 | if (err) | |
993 | return err; | |
994 | ||
995 | return hci_enable_advertising_sync(hdev); | |
996 | } | |
997 | ||
998 | int hci_enable_advertising_sync(struct hci_dev *hdev) | |
999 | { | |
1000 | struct adv_info *adv_instance; | |
1001 | struct hci_cp_le_set_adv_param cp; | |
1002 | u8 own_addr_type, enable = 0x01; | |
1003 | bool connectable; | |
1004 | u16 adv_min_interval, adv_max_interval; | |
1005 | u32 flags; | |
1006 | u8 status; | |
1007 | ||
ad383c2c LAD |
1008 | if (ext_adv_capable(hdev)) |
1009 | return hci_enable_ext_advertising_sync(hdev, | |
1010 | hdev->cur_adv_instance); | |
1011 | ||
cba6b758 LAD |
1012 | flags = hci_adv_instance_flags(hdev, hdev->cur_adv_instance); |
1013 | adv_instance = hci_find_adv_instance(hdev, hdev->cur_adv_instance); | |
1014 | ||
1015 | /* If the "connectable" instance flag was not set, then choose between | |
1016 | * ADV_IND and ADV_NONCONN_IND based on the global connectable setting. | |
1017 | */ | |
1018 | connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) || | |
1019 | mgmt_get_connectable(hdev); | |
1020 | ||
1021 | if (!is_advertising_allowed(hdev, connectable)) | |
1022 | return -EINVAL; | |
1023 | ||
ad383c2c LAD |
1024 | status = hci_disable_advertising_sync(hdev); |
1025 | if (status) | |
1026 | return status; | |
cba6b758 LAD |
1027 | |
1028 | /* Clear the HCI_LE_ADV bit temporarily so that the | |
1029 | * hci_update_random_address knows that it's safe to go ahead | |
1030 | * and write a new random address. The flag will be set back on | |
1031 | * as soon as the SET_ADV_ENABLE HCI command completes. | |
1032 | */ | |
1033 | hci_dev_clear_flag(hdev, HCI_LE_ADV); | |
1034 | ||
1035 | /* Set require_privacy to true only when non-connectable | |
1036 | * advertising is used. In that case it is fine to use a | |
1037 | * non-resolvable private address. | |
1038 | */ | |
1039 | status = hci_update_random_address_sync(hdev, !connectable, | |
1040 | adv_use_rpa(hdev, flags), | |
1041 | &own_addr_type); | |
1042 | if (status) | |
1043 | return status; | |
1044 | ||
1045 | memset(&cp, 0, sizeof(cp)); | |
1046 | ||
1047 | if (adv_instance) { | |
1048 | adv_min_interval = adv_instance->min_interval; | |
1049 | adv_max_interval = adv_instance->max_interval; | |
1050 | } else { | |
1051 | adv_min_interval = hdev->le_adv_min_interval; | |
1052 | adv_max_interval = hdev->le_adv_max_interval; | |
1053 | } | |
1054 | ||
1055 | if (connectable) { | |
1056 | cp.type = LE_ADV_IND; | |
1057 | } else { | |
1058 | if (hci_adv_instance_is_scannable(hdev, hdev->cur_adv_instance)) | |
1059 | cp.type = LE_ADV_SCAN_IND; | |
1060 | else | |
1061 | cp.type = LE_ADV_NONCONN_IND; | |
1062 | ||
1063 | if (!hci_dev_test_flag(hdev, HCI_DISCOVERABLE) || | |
1064 | hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) { | |
1065 | adv_min_interval = DISCOV_LE_FAST_ADV_INT_MIN; | |
1066 | adv_max_interval = DISCOV_LE_FAST_ADV_INT_MAX; | |
1067 | } | |
1068 | } | |
1069 | ||
1070 | cp.min_interval = cpu_to_le16(adv_min_interval); | |
1071 | cp.max_interval = cpu_to_le16(adv_max_interval); | |
1072 | cp.own_address_type = own_addr_type; | |
1073 | cp.channel_map = hdev->le_adv_channel_map; | |
1074 | ||
1075 | status = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_PARAM, | |
1076 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
1077 | if (status) | |
1078 | return status; | |
1079 | ||
1080 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE, | |
1081 | sizeof(enable), &enable, HCI_CMD_TIMEOUT); | |
1082 | } | |
1083 | ||
abfeea47 LAD |
1084 | static int enable_advertising_sync(struct hci_dev *hdev, void *data) |
1085 | { | |
1086 | return hci_enable_advertising_sync(hdev); | |
1087 | } | |
1088 | ||
1089 | int hci_enable_advertising(struct hci_dev *hdev) | |
1090 | { | |
1091 | if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) && | |
1092 | list_empty(&hdev->adv_instances)) | |
1093 | return 0; | |
1094 | ||
1095 | return hci_cmd_sync_queue(hdev, enable_advertising_sync, NULL, NULL); | |
1096 | } | |
1097 | ||
1098 | int hci_remove_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance, | |
1099 | struct sock *sk) | |
cba6b758 LAD |
1100 | { |
1101 | int err; | |
1102 | ||
1103 | if (!ext_adv_capable(hdev)) | |
1104 | return 0; | |
1105 | ||
1106 | err = hci_disable_ext_adv_instance_sync(hdev, instance); | |
1107 | if (err) | |
1108 | return err; | |
1109 | ||
1110 | /* If request specifies an instance that doesn't exist, fail */ | |
1111 | if (instance > 0 && !hci_find_adv_instance(hdev, instance)) | |
1112 | return -EINVAL; | |
1113 | ||
1114 | return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_REMOVE_ADV_SET, | |
1115 | sizeof(instance), &instance, 0, | |
1116 | HCI_CMD_TIMEOUT, sk); | |
1117 | } | |
1118 | ||
1119 | static void cancel_adv_timeout(struct hci_dev *hdev) | |
1120 | { | |
1121 | if (hdev->adv_instance_timeout) { | |
1122 | hdev->adv_instance_timeout = 0; | |
1123 | cancel_delayed_work(&hdev->adv_instance_expire); | |
1124 | } | |
1125 | } | |
1126 | ||
1127 | static int hci_set_ext_adv_data_sync(struct hci_dev *hdev, u8 instance) | |
1128 | { | |
1129 | struct { | |
1130 | struct hci_cp_le_set_ext_adv_data cp; | |
1131 | u8 data[HCI_MAX_EXT_AD_LENGTH]; | |
1132 | } pdu; | |
1133 | u8 len; | |
34a718bc LAD |
1134 | struct adv_info *adv = NULL; |
1135 | int err; | |
cba6b758 LAD |
1136 | |
1137 | memset(&pdu, 0, sizeof(pdu)); | |
1138 | ||
34a718bc LAD |
1139 | if (instance) { |
1140 | adv = hci_find_adv_instance(hdev, instance); | |
1141 | if (!adv || !adv->adv_data_changed) | |
1142 | return 0; | |
1143 | } | |
cba6b758 | 1144 | |
34a718bc | 1145 | len = eir_create_adv_data(hdev, instance, pdu.data); |
cba6b758 LAD |
1146 | |
1147 | pdu.cp.length = len; | |
1148 | pdu.cp.handle = instance; | |
1149 | pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE; | |
1150 | pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG; | |
1151 | ||
34a718bc LAD |
1152 | err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_DATA, |
1153 | sizeof(pdu.cp) + len, &pdu.cp, | |
1154 | HCI_CMD_TIMEOUT); | |
1155 | if (err) | |
1156 | return err; | |
1157 | ||
1158 | /* Update data if the command succeed */ | |
1159 | if (adv) { | |
1160 | adv->adv_data_changed = false; | |
1161 | } else { | |
1162 | memcpy(hdev->adv_data, pdu.data, len); | |
1163 | hdev->adv_data_len = len; | |
1164 | } | |
1165 | ||
1166 | return 0; | |
cba6b758 LAD |
1167 | } |
1168 | ||
1169 | static int hci_set_adv_data_sync(struct hci_dev *hdev, u8 instance) | |
1170 | { | |
1171 | struct hci_cp_le_set_adv_data cp; | |
1172 | u8 len; | |
1173 | ||
1174 | memset(&cp, 0, sizeof(cp)); | |
1175 | ||
1176 | len = eir_create_adv_data(hdev, instance, cp.data); | |
1177 | ||
1178 | /* There's nothing to do if the data hasn't changed */ | |
1179 | if (hdev->adv_data_len == len && | |
1180 | memcmp(cp.data, hdev->adv_data, len) == 0) | |
1181 | return 0; | |
1182 | ||
1183 | memcpy(hdev->adv_data, cp.data, sizeof(cp.data)); | |
1184 | hdev->adv_data_len = len; | |
1185 | ||
1186 | cp.length = len; | |
1187 | ||
1188 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_DATA, | |
1189 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
1190 | } | |
1191 | ||
1192 | int hci_update_adv_data_sync(struct hci_dev *hdev, u8 instance) | |
1193 | { | |
1194 | if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) | |
1195 | return 0; | |
1196 | ||
1197 | if (ext_adv_capable(hdev)) | |
1198 | return hci_set_ext_adv_data_sync(hdev, instance); | |
1199 | ||
1200 | return hci_set_adv_data_sync(hdev, instance); | |
1201 | } | |
1202 | ||
1203 | int hci_schedule_adv_instance_sync(struct hci_dev *hdev, u8 instance, | |
1204 | bool force) | |
1205 | { | |
1206 | struct adv_info *adv = NULL; | |
1207 | u16 timeout; | |
1208 | ||
cf75ad8b | 1209 | if (hci_dev_test_flag(hdev, HCI_ADVERTISING) && !ext_adv_capable(hdev)) |
cba6b758 LAD |
1210 | return -EPERM; |
1211 | ||
1212 | if (hdev->adv_instance_timeout) | |
1213 | return -EBUSY; | |
1214 | ||
1215 | adv = hci_find_adv_instance(hdev, instance); | |
1216 | if (!adv) | |
1217 | return -ENOENT; | |
1218 | ||
1219 | /* A zero timeout means unlimited advertising. As long as there is | |
1220 | * only one instance, duration should be ignored. We still set a timeout | |
1221 | * in case further instances are being added later on. | |
1222 | * | |
1223 | * If the remaining lifetime of the instance is more than the duration | |
1224 | * then the timeout corresponds to the duration, otherwise it will be | |
1225 | * reduced to the remaining instance lifetime. | |
1226 | */ | |
1227 | if (adv->timeout == 0 || adv->duration <= adv->remaining_time) | |
1228 | timeout = adv->duration; | |
1229 | else | |
1230 | timeout = adv->remaining_time; | |
1231 | ||
1232 | /* The remaining time is being reduced unless the instance is being | |
1233 | * advertised without time limit. | |
1234 | */ | |
1235 | if (adv->timeout) | |
1236 | adv->remaining_time = adv->remaining_time - timeout; | |
1237 | ||
1238 | /* Only use work for scheduling instances with legacy advertising */ | |
1239 | if (!ext_adv_capable(hdev)) { | |
1240 | hdev->adv_instance_timeout = timeout; | |
1241 | queue_delayed_work(hdev->req_workqueue, | |
1242 | &hdev->adv_instance_expire, | |
1243 | msecs_to_jiffies(timeout * 1000)); | |
1244 | } | |
1245 | ||
1246 | /* If we're just re-scheduling the same instance again then do not | |
1247 | * execute any HCI commands. This happens when a single instance is | |
1248 | * being advertised. | |
1249 | */ | |
1250 | if (!force && hdev->cur_adv_instance == instance && | |
1251 | hci_dev_test_flag(hdev, HCI_LE_ADV)) | |
1252 | return 0; | |
1253 | ||
1254 | hdev->cur_adv_instance = instance; | |
1255 | ||
1256 | return hci_start_adv_sync(hdev, instance); | |
1257 | } | |
1258 | ||
1259 | static int hci_clear_adv_sets_sync(struct hci_dev *hdev, struct sock *sk) | |
1260 | { | |
1261 | int err; | |
1262 | ||
1263 | if (!ext_adv_capable(hdev)) | |
1264 | return 0; | |
1265 | ||
1266 | /* Disable instance 0x00 to disable all instances */ | |
1267 | err = hci_disable_ext_adv_instance_sync(hdev, 0x00); | |
1268 | if (err) | |
1269 | return err; | |
1270 | ||
1271 | return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_CLEAR_ADV_SETS, | |
1272 | 0, NULL, 0, HCI_CMD_TIMEOUT, sk); | |
1273 | } | |
1274 | ||
1275 | static int hci_clear_adv_sync(struct hci_dev *hdev, struct sock *sk, bool force) | |
1276 | { | |
1277 | struct adv_info *adv, *n; | |
1278 | ||
1279 | if (ext_adv_capable(hdev)) | |
1280 | /* Remove all existing sets */ | |
1281 | return hci_clear_adv_sets_sync(hdev, sk); | |
1282 | ||
1283 | /* This is safe as long as there is no command send while the lock is | |
1284 | * held. | |
1285 | */ | |
1286 | hci_dev_lock(hdev); | |
1287 | ||
1288 | /* Cleanup non-ext instances */ | |
1289 | list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { | |
1290 | u8 instance = adv->instance; | |
1291 | int err; | |
1292 | ||
1293 | if (!(force || adv->timeout)) | |
1294 | continue; | |
1295 | ||
1296 | err = hci_remove_adv_instance(hdev, instance); | |
1297 | if (!err) | |
1298 | mgmt_advertising_removed(sk, hdev, instance); | |
1299 | } | |
1300 | ||
1301 | hci_dev_unlock(hdev); | |
1302 | ||
1303 | return 0; | |
1304 | } | |
1305 | ||
1306 | static int hci_remove_adv_sync(struct hci_dev *hdev, u8 instance, | |
1307 | struct sock *sk) | |
1308 | { | |
1309 | int err; | |
1310 | ||
1311 | /* If we use extended advertising, instance has to be removed first. */ | |
1312 | if (ext_adv_capable(hdev)) | |
1313 | return hci_remove_ext_adv_instance_sync(hdev, instance, sk); | |
1314 | ||
1315 | /* This is safe as long as there is no command send while the lock is | |
1316 | * held. | |
1317 | */ | |
1318 | hci_dev_lock(hdev); | |
1319 | ||
1320 | err = hci_remove_adv_instance(hdev, instance); | |
1321 | if (!err) | |
1322 | mgmt_advertising_removed(sk, hdev, instance); | |
1323 | ||
1324 | hci_dev_unlock(hdev); | |
1325 | ||
1326 | return err; | |
1327 | } | |
1328 | ||
1329 | /* For a single instance: | |
1330 | * - force == true: The instance will be removed even when its remaining | |
1331 | * lifetime is not zero. | |
1332 | * - force == false: the instance will be deactivated but kept stored unless | |
1333 | * the remaining lifetime is zero. | |
1334 | * | |
1335 | * For instance == 0x00: | |
1336 | * - force == true: All instances will be removed regardless of their timeout | |
1337 | * setting. | |
1338 | * - force == false: Only instances that have a timeout will be removed. | |
1339 | */ | |
1340 | int hci_remove_advertising_sync(struct hci_dev *hdev, struct sock *sk, | |
1341 | u8 instance, bool force) | |
1342 | { | |
1343 | struct adv_info *next = NULL; | |
1344 | int err; | |
1345 | ||
1346 | /* Cancel any timeout concerning the removed instance(s). */ | |
1347 | if (!instance || hdev->cur_adv_instance == instance) | |
1348 | cancel_adv_timeout(hdev); | |
1349 | ||
1350 | /* Get the next instance to advertise BEFORE we remove | |
1351 | * the current one. This can be the same instance again | |
1352 | * if there is only one instance. | |
1353 | */ | |
1354 | if (hdev->cur_adv_instance == instance) | |
1355 | next = hci_get_next_instance(hdev, instance); | |
1356 | ||
1357 | if (!instance) { | |
1358 | err = hci_clear_adv_sync(hdev, sk, force); | |
1359 | if (err) | |
1360 | return err; | |
1361 | } else { | |
1362 | struct adv_info *adv = hci_find_adv_instance(hdev, instance); | |
1363 | ||
1364 | if (force || (adv && adv->timeout && !adv->remaining_time)) { | |
1365 | /* Don't advertise a removed instance. */ | |
1366 | if (next && next->instance == instance) | |
1367 | next = NULL; | |
1368 | ||
1369 | err = hci_remove_adv_sync(hdev, instance, sk); | |
1370 | if (err) | |
1371 | return err; | |
1372 | } | |
1373 | } | |
1374 | ||
1375 | if (!hdev_is_powered(hdev) || hci_dev_test_flag(hdev, HCI_ADVERTISING)) | |
1376 | return 0; | |
1377 | ||
1378 | if (next && !ext_adv_capable(hdev)) | |
1379 | hci_schedule_adv_instance_sync(hdev, next->instance, false); | |
1380 | ||
1381 | return 0; | |
1382 | } | |
1383 | ||
47db6b42 BG |
1384 | int hci_read_rssi_sync(struct hci_dev *hdev, __le16 handle) |
1385 | { | |
1386 | struct hci_cp_read_rssi cp; | |
1387 | ||
1388 | cp.handle = handle; | |
1389 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_RSSI, | |
1390 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
1391 | } | |
1392 | ||
5a750137 BG |
1393 | int hci_read_clock_sync(struct hci_dev *hdev, struct hci_cp_read_clock *cp) |
1394 | { | |
1395 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_CLOCK, | |
1396 | sizeof(*cp), cp, HCI_CMD_TIMEOUT); | |
1397 | } | |
1398 | ||
47db6b42 BG |
1399 | int hci_read_tx_power_sync(struct hci_dev *hdev, __le16 handle, u8 type) |
1400 | { | |
1401 | struct hci_cp_read_tx_power cp; | |
1402 | ||
1403 | cp.handle = handle; | |
1404 | cp.type = type; | |
1405 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_TX_POWER, | |
1406 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
1407 | } | |
1408 | ||
cba6b758 LAD |
1409 | int hci_disable_advertising_sync(struct hci_dev *hdev) |
1410 | { | |
1411 | u8 enable = 0x00; | |
1412 | ||
ad383c2c LAD |
1413 | /* If controller is not advertising we are done. */ |
1414 | if (!hci_dev_test_flag(hdev, HCI_LE_ADV)) | |
1415 | return 0; | |
1416 | ||
cba6b758 LAD |
1417 | if (ext_adv_capable(hdev)) |
1418 | return hci_disable_ext_adv_instance_sync(hdev, 0x00); | |
1419 | ||
1420 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE, | |
1421 | sizeof(enable), &enable, HCI_CMD_TIMEOUT); | |
1422 | } | |
e8907f76 LAD |
1423 | |
1424 | static int hci_le_set_ext_scan_enable_sync(struct hci_dev *hdev, u8 val, | |
1425 | u8 filter_dup) | |
1426 | { | |
1427 | struct hci_cp_le_set_ext_scan_enable cp; | |
1428 | ||
1429 | memset(&cp, 0, sizeof(cp)); | |
1430 | cp.enable = val; | |
1431 | cp.filter_dup = filter_dup; | |
1432 | ||
1433 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE, | |
1434 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
1435 | } | |
1436 | ||
1437 | static int hci_le_set_scan_enable_sync(struct hci_dev *hdev, u8 val, | |
1438 | u8 filter_dup) | |
1439 | { | |
1440 | struct hci_cp_le_set_scan_enable cp; | |
1441 | ||
1442 | if (use_ext_scan(hdev)) | |
1443 | return hci_le_set_ext_scan_enable_sync(hdev, val, filter_dup); | |
1444 | ||
1445 | memset(&cp, 0, sizeof(cp)); | |
1446 | cp.enable = val; | |
1447 | cp.filter_dup = filter_dup; | |
1448 | ||
1449 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_ENABLE, | |
1450 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
1451 | } | |
1452 | ||
1453 | static int hci_le_set_addr_resolution_enable_sync(struct hci_dev *hdev, u8 val) | |
1454 | { | |
ad383c2c LAD |
1455 | if (!use_ll_privacy(hdev)) |
1456 | return 0; | |
1457 | ||
1458 | /* If controller is not/already resolving we are done. */ | |
1459 | if (val == hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION)) | |
e8907f76 LAD |
1460 | return 0; |
1461 | ||
1462 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, | |
1463 | sizeof(val), &val, HCI_CMD_TIMEOUT); | |
1464 | } | |
1465 | ||
27592ca1 | 1466 | static int hci_scan_disable_sync(struct hci_dev *hdev) |
e8907f76 LAD |
1467 | { |
1468 | int err; | |
1469 | ||
1470 | /* If controller is not scanning we are done. */ | |
1471 | if (!hci_dev_test_flag(hdev, HCI_LE_SCAN)) | |
1472 | return 0; | |
1473 | ||
1474 | if (hdev->scanning_paused) { | |
1475 | bt_dev_dbg(hdev, "Scanning is paused for suspend"); | |
1476 | return 0; | |
1477 | } | |
1478 | ||
e8907f76 LAD |
1479 | err = hci_le_set_scan_enable_sync(hdev, LE_SCAN_DISABLE, 0x00); |
1480 | if (err) { | |
1481 | bt_dev_err(hdev, "Unable to disable scanning: %d", err); | |
1482 | return err; | |
1483 | } | |
1484 | ||
e8907f76 LAD |
1485 | return err; |
1486 | } | |
1487 | ||
1488 | static bool scan_use_rpa(struct hci_dev *hdev) | |
1489 | { | |
1490 | return hci_dev_test_flag(hdev, HCI_PRIVACY); | |
1491 | } | |
1492 | ||
1493 | static void hci_start_interleave_scan(struct hci_dev *hdev) | |
1494 | { | |
1495 | hdev->interleave_scan_state = INTERLEAVE_SCAN_NO_FILTER; | |
1496 | queue_delayed_work(hdev->req_workqueue, | |
1497 | &hdev->interleave_scan, 0); | |
1498 | } | |
1499 | ||
1500 | static bool is_interleave_scanning(struct hci_dev *hdev) | |
1501 | { | |
1502 | return hdev->interleave_scan_state != INTERLEAVE_SCAN_NONE; | |
1503 | } | |
1504 | ||
1505 | static void cancel_interleave_scan(struct hci_dev *hdev) | |
1506 | { | |
1507 | bt_dev_dbg(hdev, "cancelling interleave scan"); | |
1508 | ||
1509 | cancel_delayed_work_sync(&hdev->interleave_scan); | |
1510 | ||
1511 | hdev->interleave_scan_state = INTERLEAVE_SCAN_NONE; | |
1512 | } | |
1513 | ||
1514 | /* Return true if interleave_scan wasn't started until exiting this function, | |
1515 | * otherwise, return false | |
1516 | */ | |
1517 | static bool hci_update_interleaved_scan_sync(struct hci_dev *hdev) | |
1518 | { | |
1519 | /* Do interleaved scan only if all of the following are true: | |
1520 | * - There is at least one ADV monitor | |
1521 | * - At least one pending LE connection or one device to be scanned for | |
1522 | * - Monitor offloading is not supported | |
1523 | * If so, we should alternate between allowlist scan and one without | |
1524 | * any filters to save power. | |
1525 | */ | |
1526 | bool use_interleaving = hci_is_adv_monitoring(hdev) && | |
1527 | !(list_empty(&hdev->pend_le_conns) && | |
1528 | list_empty(&hdev->pend_le_reports)) && | |
1529 | hci_get_adv_monitor_offload_ext(hdev) == | |
1530 | HCI_ADV_MONITOR_EXT_NONE; | |
1531 | bool is_interleaving = is_interleave_scanning(hdev); | |
1532 | ||
1533 | if (use_interleaving && !is_interleaving) { | |
1534 | hci_start_interleave_scan(hdev); | |
1535 | bt_dev_dbg(hdev, "starting interleave scan"); | |
1536 | return true; | |
1537 | } | |
1538 | ||
1539 | if (!use_interleaving && is_interleaving) | |
1540 | cancel_interleave_scan(hdev); | |
1541 | ||
1542 | return false; | |
1543 | } | |
1544 | ||
1545 | /* Removes connection to resolve list if needed.*/ | |
1546 | static int hci_le_del_resolve_list_sync(struct hci_dev *hdev, | |
1547 | bdaddr_t *bdaddr, u8 bdaddr_type) | |
1548 | { | |
1549 | struct hci_cp_le_del_from_resolv_list cp; | |
1550 | struct bdaddr_list_with_irk *entry; | |
1551 | ||
ad383c2c | 1552 | if (!use_ll_privacy(hdev)) |
e8907f76 LAD |
1553 | return 0; |
1554 | ||
1555 | /* Check if the IRK has been programmed */ | |
1556 | entry = hci_bdaddr_list_lookup_with_irk(&hdev->le_resolv_list, bdaddr, | |
1557 | bdaddr_type); | |
1558 | if (!entry) | |
1559 | return 0; | |
1560 | ||
1561 | cp.bdaddr_type = bdaddr_type; | |
1562 | bacpy(&cp.bdaddr, bdaddr); | |
1563 | ||
1564 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST, | |
1565 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
1566 | } | |
1567 | ||
1568 | static int hci_le_del_accept_list_sync(struct hci_dev *hdev, | |
1569 | bdaddr_t *bdaddr, u8 bdaddr_type) | |
1570 | { | |
1571 | struct hci_cp_le_del_from_accept_list cp; | |
1572 | int err; | |
1573 | ||
1574 | /* Check if device is on accept list before removing it */ | |
1575 | if (!hci_bdaddr_list_lookup(&hdev->le_accept_list, bdaddr, bdaddr_type)) | |
1576 | return 0; | |
1577 | ||
1578 | cp.bdaddr_type = bdaddr_type; | |
1579 | bacpy(&cp.bdaddr, bdaddr); | |
1580 | ||
ad383c2c LAD |
1581 | /* Ignore errors when removing from resolving list as that is likely |
1582 | * that the device was never added. | |
1583 | */ | |
1584 | hci_le_del_resolve_list_sync(hdev, &cp.bdaddr, cp.bdaddr_type); | |
1585 | ||
e8907f76 LAD |
1586 | err = __hci_cmd_sync_status(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST, |
1587 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
1588 | if (err) { | |
1589 | bt_dev_err(hdev, "Unable to remove from allow list: %d", err); | |
1590 | return err; | |
1591 | } | |
1592 | ||
1593 | bt_dev_dbg(hdev, "Remove %pMR (0x%x) from allow list", &cp.bdaddr, | |
1594 | cp.bdaddr_type); | |
1595 | ||
ad383c2c | 1596 | return 0; |
e8907f76 LAD |
1597 | } |
1598 | ||
cf75ad8b LAD |
1599 | /* Adds connection to resolve list if needed. |
1600 | * Setting params to NULL programs local hdev->irk | |
1601 | */ | |
e8907f76 LAD |
1602 | static int hci_le_add_resolve_list_sync(struct hci_dev *hdev, |
1603 | struct hci_conn_params *params) | |
1604 | { | |
1605 | struct hci_cp_le_add_to_resolv_list cp; | |
1606 | struct smp_irk *irk; | |
1607 | struct bdaddr_list_with_irk *entry; | |
1608 | ||
ad383c2c | 1609 | if (!use_ll_privacy(hdev)) |
e8907f76 LAD |
1610 | return 0; |
1611 | ||
cf75ad8b LAD |
1612 | /* Attempt to program local identity address, type and irk if params is |
1613 | * NULL. | |
1614 | */ | |
1615 | if (!params) { | |
1616 | if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) | |
1617 | return 0; | |
1618 | ||
1619 | hci_copy_identity_address(hdev, &cp.bdaddr, &cp.bdaddr_type); | |
1620 | memcpy(cp.peer_irk, hdev->irk, 16); | |
1621 | goto done; | |
1622 | } | |
1623 | ||
e8907f76 LAD |
1624 | irk = hci_find_irk_by_addr(hdev, ¶ms->addr, params->addr_type); |
1625 | if (!irk) | |
1626 | return 0; | |
1627 | ||
1628 | /* Check if the IK has _not_ been programmed yet. */ | |
1629 | entry = hci_bdaddr_list_lookup_with_irk(&hdev->le_resolv_list, | |
1630 | ¶ms->addr, | |
1631 | params->addr_type); | |
1632 | if (entry) | |
1633 | return 0; | |
1634 | ||
1635 | cp.bdaddr_type = params->addr_type; | |
1636 | bacpy(&cp.bdaddr, ¶ms->addr); | |
1637 | memcpy(cp.peer_irk, irk->val, 16); | |
1638 | ||
0900b1c6 LAD |
1639 | /* Default privacy mode is always Network */ |
1640 | params->privacy_mode = HCI_NETWORK_PRIVACY; | |
1641 | ||
cf75ad8b | 1642 | done: |
e8907f76 LAD |
1643 | if (hci_dev_test_flag(hdev, HCI_PRIVACY)) |
1644 | memcpy(cp.local_irk, hdev->irk, 16); | |
1645 | else | |
1646 | memset(cp.local_irk, 0, 16); | |
1647 | ||
1648 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST, | |
1649 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
1650 | } | |
1651 | ||
853b70b5 LAD |
1652 | /* Set Device Privacy Mode. */ |
1653 | static int hci_le_set_privacy_mode_sync(struct hci_dev *hdev, | |
1654 | struct hci_conn_params *params) | |
1655 | { | |
1656 | struct hci_cp_le_set_privacy_mode cp; | |
1657 | struct smp_irk *irk; | |
1658 | ||
1659 | /* If device privacy mode has already been set there is nothing to do */ | |
1660 | if (params->privacy_mode == HCI_DEVICE_PRIVACY) | |
1661 | return 0; | |
1662 | ||
1663 | /* Check if HCI_CONN_FLAG_DEVICE_PRIVACY has been set as it also | |
1664 | * indicates that LL Privacy has been enabled and | |
1665 | * HCI_OP_LE_SET_PRIVACY_MODE is supported. | |
1666 | */ | |
e1cff700 | 1667 | if (!(params->flags & HCI_CONN_FLAG_DEVICE_PRIVACY)) |
853b70b5 LAD |
1668 | return 0; |
1669 | ||
1670 | irk = hci_find_irk_by_addr(hdev, ¶ms->addr, params->addr_type); | |
1671 | if (!irk) | |
1672 | return 0; | |
1673 | ||
1674 | memset(&cp, 0, sizeof(cp)); | |
1675 | cp.bdaddr_type = irk->addr_type; | |
1676 | bacpy(&cp.bdaddr, &irk->bdaddr); | |
1677 | cp.mode = HCI_DEVICE_PRIVACY; | |
1678 | ||
1679 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PRIVACY_MODE, | |
1680 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
1681 | } | |
1682 | ||
e8907f76 | 1683 | /* Adds connection to allow list if needed, if the device uses RPA (has IRK) |
853b70b5 LAD |
1684 | * this attempts to program the device in the resolving list as well and |
1685 | * properly set the privacy mode. | |
e8907f76 LAD |
1686 | */ |
1687 | static int hci_le_add_accept_list_sync(struct hci_dev *hdev, | |
1688 | struct hci_conn_params *params, | |
ad383c2c | 1689 | u8 *num_entries) |
e8907f76 LAD |
1690 | { |
1691 | struct hci_cp_le_add_to_accept_list cp; | |
1692 | int err; | |
1693 | ||
3b420553 LAD |
1694 | /* During suspend, only wakeable devices can be in acceptlist */ |
1695 | if (hdev->suspended && | |
e1cff700 | 1696 | !(params->flags & HCI_CONN_FLAG_REMOTE_WAKEUP)) |
3b420553 LAD |
1697 | return 0; |
1698 | ||
e8907f76 LAD |
1699 | /* Select filter policy to accept all advertising */ |
1700 | if (*num_entries >= hdev->le_accept_list_size) | |
1701 | return -ENOSPC; | |
1702 | ||
1703 | /* Accept list can not be used with RPAs */ | |
ad383c2c | 1704 | if (!use_ll_privacy(hdev) && |
3b420553 | 1705 | hci_find_irk_by_addr(hdev, ¶ms->addr, params->addr_type)) |
e8907f76 | 1706 | return -EINVAL; |
e8907f76 | 1707 | |
ad383c2c LAD |
1708 | /* Attempt to program the device in the resolving list first to avoid |
1709 | * having to rollback in case it fails since the resolving list is | |
1710 | * dynamic it can probably be smaller than the accept list. | |
1711 | */ | |
1712 | err = hci_le_add_resolve_list_sync(hdev, params); | |
1713 | if (err) { | |
1714 | bt_dev_err(hdev, "Unable to add to resolve list: %d", err); | |
1715 | return err; | |
1716 | } | |
1717 | ||
853b70b5 LAD |
1718 | /* Set Privacy Mode */ |
1719 | err = hci_le_set_privacy_mode_sync(hdev, params); | |
1720 | if (err) { | |
1721 | bt_dev_err(hdev, "Unable to set privacy mode: %d", err); | |
1722 | return err; | |
1723 | } | |
1724 | ||
1725 | /* Check if already in accept list */ | |
1726 | if (hci_bdaddr_list_lookup(&hdev->le_accept_list, ¶ms->addr, | |
1727 | params->addr_type)) | |
1728 | return 0; | |
1729 | ||
e8907f76 LAD |
1730 | *num_entries += 1; |
1731 | cp.bdaddr_type = params->addr_type; | |
1732 | bacpy(&cp.bdaddr, ¶ms->addr); | |
1733 | ||
1734 | err = __hci_cmd_sync_status(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST, | |
1735 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
1736 | if (err) { | |
1737 | bt_dev_err(hdev, "Unable to add to allow list: %d", err); | |
ad383c2c LAD |
1738 | /* Rollback the device from the resolving list */ |
1739 | hci_le_del_resolve_list_sync(hdev, &cp.bdaddr, cp.bdaddr_type); | |
e8907f76 LAD |
1740 | return err; |
1741 | } | |
1742 | ||
1743 | bt_dev_dbg(hdev, "Add %pMR (0x%x) to allow list", &cp.bdaddr, | |
1744 | cp.bdaddr_type); | |
1745 | ||
ad383c2c LAD |
1746 | return 0; |
1747 | } | |
1748 | ||
182ee45d | 1749 | /* This function disables/pause all advertising instances */ |
ad383c2c LAD |
1750 | static int hci_pause_advertising_sync(struct hci_dev *hdev) |
1751 | { | |
1752 | int err; | |
182ee45d | 1753 | int old_state; |
ad383c2c | 1754 | |
9446bdde LAD |
1755 | /* If already been paused there is nothing to do. */ |
1756 | if (hdev->advertising_paused) | |
ad383c2c LAD |
1757 | return 0; |
1758 | ||
182ee45d LAD |
1759 | bt_dev_dbg(hdev, "Pausing directed advertising"); |
1760 | ||
1761 | /* Stop directed advertising */ | |
1762 | old_state = hci_dev_test_flag(hdev, HCI_ADVERTISING); | |
1763 | if (old_state) { | |
1764 | /* When discoverable timeout triggers, then just make sure | |
1765 | * the limited discoverable flag is cleared. Even in the case | |
1766 | * of a timeout triggered from general discoverable, it is | |
1767 | * safe to unconditionally clear the flag. | |
1768 | */ | |
1769 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); | |
1770 | hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); | |
1771 | hdev->discov_timeout = 0; | |
1772 | } | |
1773 | ||
ad383c2c LAD |
1774 | bt_dev_dbg(hdev, "Pausing advertising instances"); |
1775 | ||
1776 | /* Call to disable any advertisements active on the controller. | |
1777 | * This will succeed even if no advertisements are configured. | |
1778 | */ | |
1779 | err = hci_disable_advertising_sync(hdev); | |
1780 | if (err) | |
1781 | return err; | |
1782 | ||
1783 | /* If we are using software rotation, pause the loop */ | |
1784 | if (!ext_adv_capable(hdev)) | |
1785 | cancel_adv_timeout(hdev); | |
1786 | ||
1787 | hdev->advertising_paused = true; | |
182ee45d | 1788 | hdev->advertising_old_state = old_state; |
ad383c2c LAD |
1789 | |
1790 | return 0; | |
e8907f76 LAD |
1791 | } |
1792 | ||
182ee45d | 1793 | /* This function enables all user advertising instances */ |
ad383c2c LAD |
1794 | static int hci_resume_advertising_sync(struct hci_dev *hdev) |
1795 | { | |
1796 | struct adv_info *adv, *tmp; | |
1797 | int err; | |
1798 | ||
1799 | /* If advertising has not been paused there is nothing to do. */ | |
1800 | if (!hdev->advertising_paused) | |
1801 | return 0; | |
1802 | ||
182ee45d LAD |
1803 | /* Resume directed advertising */ |
1804 | hdev->advertising_paused = false; | |
1805 | if (hdev->advertising_old_state) { | |
1806 | hci_dev_set_flag(hdev, HCI_ADVERTISING); | |
182ee45d LAD |
1807 | hdev->advertising_old_state = 0; |
1808 | } | |
1809 | ||
ad383c2c LAD |
1810 | bt_dev_dbg(hdev, "Resuming advertising instances"); |
1811 | ||
1812 | if (ext_adv_capable(hdev)) { | |
1813 | /* Call for each tracked instance to be re-enabled */ | |
1814 | list_for_each_entry_safe(adv, tmp, &hdev->adv_instances, list) { | |
1815 | err = hci_enable_ext_advertising_sync(hdev, | |
1816 | adv->instance); | |
1817 | if (!err) | |
1818 | continue; | |
1819 | ||
1820 | /* If the instance cannot be resumed remove it */ | |
1821 | hci_remove_ext_adv_instance_sync(hdev, adv->instance, | |
1822 | NULL); | |
1823 | } | |
1824 | } else { | |
1825 | /* Schedule for most recent instance to be restarted and begin | |
1826 | * the software rotation loop | |
1827 | */ | |
1828 | err = hci_schedule_adv_instance_sync(hdev, | |
1829 | hdev->cur_adv_instance, | |
1830 | true); | |
1831 | } | |
1832 | ||
1833 | hdev->advertising_paused = false; | |
1834 | ||
1835 | return err; | |
1836 | } | |
1837 | ||
f892244b BG |
1838 | struct sk_buff *hci_read_local_oob_data_sync(struct hci_dev *hdev, |
1839 | bool extended, struct sock *sk) | |
1840 | { | |
1841 | u16 opcode = extended ? HCI_OP_READ_LOCAL_OOB_EXT_DATA : | |
1842 | HCI_OP_READ_LOCAL_OOB_DATA; | |
1843 | ||
1844 | return __hci_cmd_sync_sk(hdev, opcode, 0, NULL, 0, HCI_CMD_TIMEOUT, sk); | |
1845 | } | |
1846 | ||
ad383c2c LAD |
1847 | /* Device must not be scanning when updating the accept list. |
1848 | * | |
1849 | * Update is done using the following sequence: | |
1850 | * | |
1851 | * use_ll_privacy((Disable Advertising) -> Disable Resolving List) -> | |
1852 | * Remove Devices From Accept List -> | |
1853 | * (has IRK && use_ll_privacy(Remove Devices From Resolving List))-> | |
1854 | * Add Devices to Accept List -> | |
1855 | * (has IRK && use_ll_privacy(Remove Devices From Resolving List)) -> | |
1856 | * use_ll_privacy(Enable Resolving List -> (Enable Advertising)) -> | |
1857 | * Enable Scanning | |
1858 | * | |
1859 | * In case of failure advertising shall be restored to its original state and | |
1860 | * return would disable accept list since either accept or resolving list could | |
1861 | * not be programmed. | |
1862 | * | |
1863 | */ | |
e8907f76 LAD |
1864 | static u8 hci_update_accept_list_sync(struct hci_dev *hdev) |
1865 | { | |
1866 | struct hci_conn_params *params; | |
1867 | struct bdaddr_list *b, *t; | |
1868 | u8 num_entries = 0; | |
1869 | bool pend_conn, pend_report; | |
80740ebb | 1870 | u8 filter_policy; |
ad383c2c LAD |
1871 | int err; |
1872 | ||
1873 | /* Pause advertising if resolving list can be used as controllers are | |
1874 | * cannot accept resolving list modifications while advertising. | |
e8907f76 | 1875 | */ |
ad383c2c LAD |
1876 | if (use_ll_privacy(hdev)) { |
1877 | err = hci_pause_advertising_sync(hdev); | |
1878 | if (err) { | |
1879 | bt_dev_err(hdev, "pause advertising failed: %d", err); | |
1880 | return 0x00; | |
1881 | } | |
1882 | } | |
e8907f76 | 1883 | |
ad383c2c LAD |
1884 | /* Disable address resolution while reprogramming accept list since |
1885 | * devices that do have an IRK will be programmed in the resolving list | |
1886 | * when LL Privacy is enabled. | |
1887 | */ | |
1888 | err = hci_le_set_addr_resolution_enable_sync(hdev, 0x00); | |
1889 | if (err) { | |
1890 | bt_dev_err(hdev, "Unable to disable LL privacy: %d", err); | |
1891 | goto done; | |
1892 | } | |
e8907f76 LAD |
1893 | |
1894 | /* Go through the current accept list programmed into the | |
6828b583 LAD |
1895 | * controller one by one and check if that address is connected or is |
1896 | * still in the list of pending connections or list of devices to | |
e8907f76 LAD |
1897 | * report. If not present in either list, then remove it from |
1898 | * the controller. | |
1899 | */ | |
1900 | list_for_each_entry_safe(b, t, &hdev->le_accept_list, list) { | |
6828b583 LAD |
1901 | if (hci_conn_hash_lookup_le(hdev, &b->bdaddr, b->bdaddr_type)) |
1902 | continue; | |
1903 | ||
e8907f76 LAD |
1904 | pend_conn = hci_pend_le_action_lookup(&hdev->pend_le_conns, |
1905 | &b->bdaddr, | |
1906 | b->bdaddr_type); | |
1907 | pend_report = hci_pend_le_action_lookup(&hdev->pend_le_reports, | |
1908 | &b->bdaddr, | |
1909 | b->bdaddr_type); | |
1910 | ||
1911 | /* If the device is not likely to connect or report, | |
1912 | * remove it from the acceptlist. | |
1913 | */ | |
1914 | if (!pend_conn && !pend_report) { | |
1915 | hci_le_del_accept_list_sync(hdev, &b->bdaddr, | |
1916 | b->bdaddr_type); | |
1917 | continue; | |
1918 | } | |
1919 | ||
e8907f76 LAD |
1920 | num_entries++; |
1921 | } | |
1922 | ||
1923 | /* Since all no longer valid accept list entries have been | |
1924 | * removed, walk through the list of pending connections | |
1925 | * and ensure that any new device gets programmed into | |
1926 | * the controller. | |
1927 | * | |
1928 | * If the list of the devices is larger than the list of | |
1929 | * available accept list entries in the controller, then | |
1930 | * just abort and return filer policy value to not use the | |
1931 | * accept list. | |
1932 | */ | |
1933 | list_for_each_entry(params, &hdev->pend_le_conns, action) { | |
ad383c2c LAD |
1934 | err = hci_le_add_accept_list_sync(hdev, params, &num_entries); |
1935 | if (err) | |
1936 | goto done; | |
e8907f76 LAD |
1937 | } |
1938 | ||
1939 | /* After adding all new pending connections, walk through | |
1940 | * the list of pending reports and also add these to the | |
1941 | * accept list if there is still space. Abort if space runs out. | |
1942 | */ | |
1943 | list_for_each_entry(params, &hdev->pend_le_reports, action) { | |
ad383c2c LAD |
1944 | err = hci_le_add_accept_list_sync(hdev, params, &num_entries); |
1945 | if (err) | |
1946 | goto done; | |
e8907f76 LAD |
1947 | } |
1948 | ||
1949 | /* Use the allowlist unless the following conditions are all true: | |
1950 | * - We are not currently suspending | |
1951 | * - There are 1 or more ADV monitors registered and it's not offloaded | |
1952 | * - Interleaved scanning is not currently using the allowlist | |
1953 | */ | |
1954 | if (!idr_is_empty(&hdev->adv_monitors_idr) && !hdev->suspended && | |
1955 | hci_get_adv_monitor_offload_ext(hdev) == HCI_ADV_MONITOR_EXT_NONE && | |
1956 | hdev->interleave_scan_state != INTERLEAVE_SCAN_ALLOWLIST) | |
ad383c2c LAD |
1957 | err = -EINVAL; |
1958 | ||
1959 | done: | |
80740ebb LAD |
1960 | filter_policy = err ? 0x00 : 0x01; |
1961 | ||
ad383c2c LAD |
1962 | /* Enable address resolution when LL Privacy is enabled. */ |
1963 | err = hci_le_set_addr_resolution_enable_sync(hdev, 0x01); | |
1964 | if (err) | |
1965 | bt_dev_err(hdev, "Unable to enable LL privacy: %d", err); | |
1966 | ||
1967 | /* Resume advertising if it was paused */ | |
1968 | if (use_ll_privacy(hdev)) | |
1969 | hci_resume_advertising_sync(hdev); | |
e8907f76 LAD |
1970 | |
1971 | /* Select filter policy to use accept list */ | |
80740ebb | 1972 | return filter_policy; |
e8907f76 LAD |
1973 | } |
1974 | ||
1975 | /* Returns true if an le connection is in the scanning state */ | |
1976 | static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev) | |
1977 | { | |
1978 | struct hci_conn_hash *h = &hdev->conn_hash; | |
1979 | struct hci_conn *c; | |
1980 | ||
1981 | rcu_read_lock(); | |
1982 | ||
1983 | list_for_each_entry_rcu(c, &h->list, list) { | |
1984 | if (c->type == LE_LINK && c->state == BT_CONNECT && | |
1985 | test_bit(HCI_CONN_SCANNING, &c->flags)) { | |
1986 | rcu_read_unlock(); | |
1987 | return true; | |
1988 | } | |
1989 | } | |
1990 | ||
1991 | rcu_read_unlock(); | |
1992 | ||
1993 | return false; | |
1994 | } | |
1995 | ||
1996 | static int hci_le_set_ext_scan_param_sync(struct hci_dev *hdev, u8 type, | |
1997 | u16 interval, u16 window, | |
1998 | u8 own_addr_type, u8 filter_policy) | |
1999 | { | |
2000 | struct hci_cp_le_set_ext_scan_params *cp; | |
2001 | struct hci_cp_le_scan_phy_params *phy; | |
2002 | u8 data[sizeof(*cp) + sizeof(*phy) * 2]; | |
2003 | u8 num_phy = 0; | |
2004 | ||
2005 | cp = (void *)data; | |
2006 | phy = (void *)cp->data; | |
2007 | ||
2008 | memset(data, 0, sizeof(data)); | |
2009 | ||
2010 | cp->own_addr_type = own_addr_type; | |
2011 | cp->filter_policy = filter_policy; | |
2012 | ||
2013 | if (scan_1m(hdev) || scan_2m(hdev)) { | |
2014 | cp->scanning_phys |= LE_SCAN_PHY_1M; | |
2015 | ||
2016 | phy->type = type; | |
2017 | phy->interval = cpu_to_le16(interval); | |
2018 | phy->window = cpu_to_le16(window); | |
2019 | ||
2020 | num_phy++; | |
2021 | phy++; | |
2022 | } | |
2023 | ||
2024 | if (scan_coded(hdev)) { | |
2025 | cp->scanning_phys |= LE_SCAN_PHY_CODED; | |
2026 | ||
2027 | phy->type = type; | |
2028 | phy->interval = cpu_to_le16(interval); | |
2029 | phy->window = cpu_to_le16(window); | |
2030 | ||
2031 | num_phy++; | |
2032 | phy++; | |
2033 | } | |
2034 | ||
2035 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS, | |
2036 | sizeof(*cp) + sizeof(*phy) * num_phy, | |
2037 | data, HCI_CMD_TIMEOUT); | |
2038 | } | |
2039 | ||
2040 | static int hci_le_set_scan_param_sync(struct hci_dev *hdev, u8 type, | |
2041 | u16 interval, u16 window, | |
2042 | u8 own_addr_type, u8 filter_policy) | |
2043 | { | |
2044 | struct hci_cp_le_set_scan_param cp; | |
2045 | ||
2046 | if (use_ext_scan(hdev)) | |
2047 | return hci_le_set_ext_scan_param_sync(hdev, type, interval, | |
2048 | window, own_addr_type, | |
2049 | filter_policy); | |
2050 | ||
2051 | memset(&cp, 0, sizeof(cp)); | |
2052 | cp.type = type; | |
2053 | cp.interval = cpu_to_le16(interval); | |
2054 | cp.window = cpu_to_le16(window); | |
2055 | cp.own_address_type = own_addr_type; | |
2056 | cp.filter_policy = filter_policy; | |
2057 | ||
2058 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_PARAM, | |
2059 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
2060 | } | |
2061 | ||
2062 | static int hci_start_scan_sync(struct hci_dev *hdev, u8 type, u16 interval, | |
abfeea47 LAD |
2063 | u16 window, u8 own_addr_type, u8 filter_policy, |
2064 | u8 filter_dup) | |
e8907f76 LAD |
2065 | { |
2066 | int err; | |
2067 | ||
2068 | if (hdev->scanning_paused) { | |
2069 | bt_dev_dbg(hdev, "Scanning is paused for suspend"); | |
2070 | return 0; | |
2071 | } | |
2072 | ||
e8907f76 LAD |
2073 | err = hci_le_set_scan_param_sync(hdev, type, interval, window, |
2074 | own_addr_type, filter_policy); | |
2075 | if (err) | |
2076 | return err; | |
2077 | ||
abfeea47 | 2078 | return hci_le_set_scan_enable_sync(hdev, LE_SCAN_ENABLE, filter_dup); |
e8907f76 LAD |
2079 | } |
2080 | ||
27592ca1 | 2081 | static int hci_passive_scan_sync(struct hci_dev *hdev) |
e8907f76 LAD |
2082 | { |
2083 | u8 own_addr_type; | |
2084 | u8 filter_policy; | |
2085 | u16 window, interval; | |
ad383c2c | 2086 | int err; |
e8907f76 LAD |
2087 | |
2088 | if (hdev->scanning_paused) { | |
2089 | bt_dev_dbg(hdev, "Scanning is paused for suspend"); | |
2090 | return 0; | |
2091 | } | |
2092 | ||
ad383c2c LAD |
2093 | err = hci_scan_disable_sync(hdev); |
2094 | if (err) { | |
2095 | bt_dev_err(hdev, "disable scanning failed: %d", err); | |
2096 | return err; | |
2097 | } | |
2098 | ||
e8907f76 LAD |
2099 | /* Set require_privacy to false since no SCAN_REQ are send |
2100 | * during passive scanning. Not using an non-resolvable address | |
2101 | * here is important so that peer devices using direct | |
2102 | * advertising with our address will be correctly reported | |
2103 | * by the controller. | |
2104 | */ | |
2105 | if (hci_update_random_address_sync(hdev, false, scan_use_rpa(hdev), | |
2106 | &own_addr_type)) | |
2107 | return 0; | |
2108 | ||
2109 | if (hdev->enable_advmon_interleave_scan && | |
2110 | hci_update_interleaved_scan_sync(hdev)) | |
2111 | return 0; | |
2112 | ||
2113 | bt_dev_dbg(hdev, "interleave state %d", hdev->interleave_scan_state); | |
ad383c2c | 2114 | |
e8907f76 LAD |
2115 | /* Adding or removing entries from the accept list must |
2116 | * happen before enabling scanning. The controller does | |
2117 | * not allow accept list modification while scanning. | |
2118 | */ | |
2119 | filter_policy = hci_update_accept_list_sync(hdev); | |
2120 | ||
2121 | /* When the controller is using random resolvable addresses and | |
2122 | * with that having LE privacy enabled, then controllers with | |
2123 | * Extended Scanner Filter Policies support can now enable support | |
2124 | * for handling directed advertising. | |
2125 | * | |
2126 | * So instead of using filter polices 0x00 (no acceptlist) | |
2127 | * and 0x01 (acceptlist enabled) use the new filter policies | |
2128 | * 0x02 (no acceptlist) and 0x03 (acceptlist enabled). | |
2129 | */ | |
2130 | if (hci_dev_test_flag(hdev, HCI_PRIVACY) && | |
2131 | (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY)) | |
2132 | filter_policy |= 0x02; | |
2133 | ||
2134 | if (hdev->suspended) { | |
2135 | window = hdev->le_scan_window_suspend; | |
2136 | interval = hdev->le_scan_int_suspend; | |
e8907f76 LAD |
2137 | } else if (hci_is_le_conn_scanning(hdev)) { |
2138 | window = hdev->le_scan_window_connect; | |
2139 | interval = hdev->le_scan_int_connect; | |
2140 | } else if (hci_is_adv_monitoring(hdev)) { | |
2141 | window = hdev->le_scan_window_adv_monitor; | |
2142 | interval = hdev->le_scan_int_adv_monitor; | |
2143 | } else { | |
2144 | window = hdev->le_scan_window; | |
2145 | interval = hdev->le_scan_interval; | |
2146 | } | |
2147 | ||
2148 | bt_dev_dbg(hdev, "LE passive scan with acceptlist = %d", filter_policy); | |
2149 | ||
2150 | return hci_start_scan_sync(hdev, LE_SCAN_PASSIVE, interval, window, | |
abfeea47 LAD |
2151 | own_addr_type, filter_policy, |
2152 | LE_SCAN_FILTER_DUP_ENABLE); | |
e8907f76 LAD |
2153 | } |
2154 | ||
2155 | /* This function controls the passive scanning based on hdev->pend_le_conns | |
2156 | * list. If there are pending LE connection we start the background scanning, | |
ad383c2c LAD |
2157 | * otherwise we stop it in the following sequence: |
2158 | * | |
2159 | * If there are devices to scan: | |
2160 | * | |
2161 | * Disable Scanning -> Update Accept List -> | |
2162 | * use_ll_privacy((Disable Advertising) -> Disable Resolving List -> | |
2163 | * Update Resolving List -> Enable Resolving List -> (Enable Advertising)) -> | |
2164 | * Enable Scanning | |
2165 | * | |
2166 | * Otherwise: | |
2167 | * | |
2168 | * Disable Scanning | |
e8907f76 LAD |
2169 | */ |
2170 | int hci_update_passive_scan_sync(struct hci_dev *hdev) | |
2171 | { | |
2172 | int err; | |
2173 | ||
2174 | if (!test_bit(HCI_UP, &hdev->flags) || | |
2175 | test_bit(HCI_INIT, &hdev->flags) || | |
2176 | hci_dev_test_flag(hdev, HCI_SETUP) || | |
2177 | hci_dev_test_flag(hdev, HCI_CONFIG) || | |
2178 | hci_dev_test_flag(hdev, HCI_AUTO_OFF) || | |
2179 | hci_dev_test_flag(hdev, HCI_UNREGISTER)) | |
2180 | return 0; | |
2181 | ||
2182 | /* No point in doing scanning if LE support hasn't been enabled */ | |
2183 | if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) | |
2184 | return 0; | |
2185 | ||
2186 | /* If discovery is active don't interfere with it */ | |
2187 | if (hdev->discovery.state != DISCOVERY_STOPPED) | |
2188 | return 0; | |
2189 | ||
2190 | /* Reset RSSI and UUID filters when starting background scanning | |
2191 | * since these filters are meant for service discovery only. | |
2192 | * | |
2193 | * The Start Discovery and Start Service Discovery operations | |
2194 | * ensure to set proper values for RSSI threshold and UUID | |
2195 | * filter list. So it is safe to just reset them here. | |
2196 | */ | |
2197 | hci_discovery_filter_clear(hdev); | |
2198 | ||
2199 | bt_dev_dbg(hdev, "ADV monitoring is %s", | |
2200 | hci_is_adv_monitoring(hdev) ? "on" : "off"); | |
2201 | ||
2202 | if (list_empty(&hdev->pend_le_conns) && | |
2203 | list_empty(&hdev->pend_le_reports) && | |
2204 | !hci_is_adv_monitoring(hdev)) { | |
2205 | /* If there is no pending LE connections or devices | |
2206 | * to be scanned for or no ADV monitors, we should stop the | |
2207 | * background scanning. | |
2208 | */ | |
2209 | ||
2210 | bt_dev_dbg(hdev, "stopping background scanning"); | |
2211 | ||
ad383c2c | 2212 | err = hci_scan_disable_sync(hdev); |
e8907f76 LAD |
2213 | if (err) |
2214 | bt_dev_err(hdev, "stop background scanning failed: %d", | |
2215 | err); | |
2216 | } else { | |
2217 | /* If there is at least one pending LE connection, we should | |
2218 | * keep the background scan running. | |
2219 | */ | |
2220 | ||
2221 | /* If controller is connecting, we should not start scanning | |
2222 | * since some controllers are not able to scan and connect at | |
2223 | * the same time. | |
2224 | */ | |
2225 | if (hci_lookup_le_connect(hdev)) | |
2226 | return 0; | |
2227 | ||
e8907f76 LAD |
2228 | bt_dev_dbg(hdev, "start background scanning"); |
2229 | ||
2230 | err = hci_passive_scan_sync(hdev); | |
2231 | if (err) | |
2232 | bt_dev_err(hdev, "start background scanning failed: %d", | |
2233 | err); | |
2234 | } | |
2235 | ||
2236 | return err; | |
2237 | } | |
ad383c2c LAD |
2238 | |
2239 | static int update_passive_scan_sync(struct hci_dev *hdev, void *data) | |
2240 | { | |
2241 | return hci_update_passive_scan_sync(hdev); | |
2242 | } | |
2243 | ||
2244 | int hci_update_passive_scan(struct hci_dev *hdev) | |
2245 | { | |
5bee2fd6 LAD |
2246 | /* Only queue if it would have any effect */ |
2247 | if (!test_bit(HCI_UP, &hdev->flags) || | |
2248 | test_bit(HCI_INIT, &hdev->flags) || | |
2249 | hci_dev_test_flag(hdev, HCI_SETUP) || | |
2250 | hci_dev_test_flag(hdev, HCI_CONFIG) || | |
2251 | hci_dev_test_flag(hdev, HCI_AUTO_OFF) || | |
2252 | hci_dev_test_flag(hdev, HCI_UNREGISTER)) | |
2253 | return 0; | |
2254 | ||
ad383c2c LAD |
2255 | return hci_cmd_sync_queue(hdev, update_passive_scan_sync, NULL, NULL); |
2256 | } | |
cf75ad8b | 2257 | |
2f2eb0c9 | 2258 | int hci_write_sc_support_sync(struct hci_dev *hdev, u8 val) |
cf75ad8b | 2259 | { |
2f2eb0c9 BG |
2260 | int err; |
2261 | ||
cf75ad8b LAD |
2262 | if (!bredr_sc_enabled(hdev) || lmp_host_sc_capable(hdev)) |
2263 | return 0; | |
2264 | ||
2f2eb0c9 | 2265 | err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SC_SUPPORT, |
cf75ad8b | 2266 | sizeof(val), &val, HCI_CMD_TIMEOUT); |
2f2eb0c9 BG |
2267 | |
2268 | if (!err) { | |
2269 | if (val) { | |
2270 | hdev->features[1][0] |= LMP_HOST_SC; | |
2271 | hci_dev_set_flag(hdev, HCI_SC_ENABLED); | |
2272 | } else { | |
2273 | hdev->features[1][0] &= ~LMP_HOST_SC; | |
2274 | hci_dev_clear_flag(hdev, HCI_SC_ENABLED); | |
2275 | } | |
2276 | } | |
2277 | ||
2278 | return err; | |
cf75ad8b LAD |
2279 | } |
2280 | ||
3244845c | 2281 | int hci_write_ssp_mode_sync(struct hci_dev *hdev, u8 mode) |
cf75ad8b LAD |
2282 | { |
2283 | int err; | |
2284 | ||
2285 | if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED) || | |
2286 | lmp_host_ssp_capable(hdev)) | |
2287 | return 0; | |
2288 | ||
3244845c BG |
2289 | if (!mode && hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS)) { |
2290 | __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE, | |
2291 | sizeof(mode), &mode, HCI_CMD_TIMEOUT); | |
2292 | } | |
2293 | ||
cf75ad8b LAD |
2294 | err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_MODE, |
2295 | sizeof(mode), &mode, HCI_CMD_TIMEOUT); | |
2296 | if (err) | |
2297 | return err; | |
2298 | ||
2299 | return hci_write_sc_support_sync(hdev, 0x01); | |
2300 | } | |
2301 | ||
d81a494c | 2302 | int hci_write_le_host_supported_sync(struct hci_dev *hdev, u8 le, u8 simul) |
cf75ad8b LAD |
2303 | { |
2304 | struct hci_cp_write_le_host_supported cp; | |
2305 | ||
2306 | if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) || | |
2307 | !lmp_bredr_capable(hdev)) | |
2308 | return 0; | |
2309 | ||
2310 | /* Check first if we already have the right host state | |
2311 | * (host features set) | |
2312 | */ | |
2313 | if (le == lmp_host_le_capable(hdev) && | |
2314 | simul == lmp_host_le_br_capable(hdev)) | |
2315 | return 0; | |
2316 | ||
2317 | memset(&cp, 0, sizeof(cp)); | |
2318 | ||
2319 | cp.le = le; | |
2320 | cp.simul = simul; | |
2321 | ||
2322 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED, | |
2323 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
2324 | } | |
2325 | ||
2326 | static int hci_powered_update_adv_sync(struct hci_dev *hdev) | |
2327 | { | |
2328 | struct adv_info *adv, *tmp; | |
2329 | int err; | |
2330 | ||
2331 | if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) | |
2332 | return 0; | |
2333 | ||
2334 | /* If RPA Resolution has not been enable yet it means the | |
2335 | * resolving list is empty and we should attempt to program the | |
2336 | * local IRK in order to support using own_addr_type | |
2337 | * ADDR_LE_DEV_RANDOM_RESOLVED (0x03). | |
2338 | */ | |
2339 | if (!hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION)) { | |
2340 | hci_le_add_resolve_list_sync(hdev, NULL); | |
2341 | hci_le_set_addr_resolution_enable_sync(hdev, 0x01); | |
2342 | } | |
2343 | ||
2344 | /* Make sure the controller has a good default for | |
2345 | * advertising data. This also applies to the case | |
2346 | * where BR/EDR was toggled during the AUTO_OFF phase. | |
2347 | */ | |
2348 | if (hci_dev_test_flag(hdev, HCI_ADVERTISING) || | |
2349 | list_empty(&hdev->adv_instances)) { | |
2350 | if (ext_adv_capable(hdev)) { | |
2351 | err = hci_setup_ext_adv_instance_sync(hdev, 0x00); | |
2352 | if (!err) | |
2353 | hci_update_scan_rsp_data_sync(hdev, 0x00); | |
2354 | } else { | |
2355 | err = hci_update_adv_data_sync(hdev, 0x00); | |
2356 | if (!err) | |
2357 | hci_update_scan_rsp_data_sync(hdev, 0x00); | |
2358 | } | |
2359 | ||
2360 | if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) | |
2361 | hci_enable_advertising_sync(hdev); | |
2362 | } | |
2363 | ||
2364 | /* Call for each tracked instance to be scheduled */ | |
2365 | list_for_each_entry_safe(adv, tmp, &hdev->adv_instances, list) | |
2366 | hci_schedule_adv_instance_sync(hdev, adv->instance, true); | |
2367 | ||
2368 | return 0; | |
2369 | } | |
2370 | ||
2371 | static int hci_write_auth_enable_sync(struct hci_dev *hdev) | |
2372 | { | |
2373 | u8 link_sec; | |
2374 | ||
2375 | link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY); | |
2376 | if (link_sec == test_bit(HCI_AUTH, &hdev->flags)) | |
2377 | return 0; | |
2378 | ||
2379 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_AUTH_ENABLE, | |
2380 | sizeof(link_sec), &link_sec, | |
2381 | HCI_CMD_TIMEOUT); | |
2382 | } | |
2383 | ||
353a0249 | 2384 | int hci_write_fast_connectable_sync(struct hci_dev *hdev, bool enable) |
cf75ad8b LAD |
2385 | { |
2386 | struct hci_cp_write_page_scan_activity cp; | |
2387 | u8 type; | |
2388 | int err = 0; | |
2389 | ||
2390 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) | |
2391 | return 0; | |
2392 | ||
2393 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
2394 | return 0; | |
2395 | ||
2396 | memset(&cp, 0, sizeof(cp)); | |
2397 | ||
2398 | if (enable) { | |
2399 | type = PAGE_SCAN_TYPE_INTERLACED; | |
2400 | ||
2401 | /* 160 msec page scan interval */ | |
2402 | cp.interval = cpu_to_le16(0x0100); | |
2403 | } else { | |
2404 | type = hdev->def_page_scan_type; | |
2405 | cp.interval = cpu_to_le16(hdev->def_page_scan_int); | |
2406 | } | |
2407 | ||
2408 | cp.window = cpu_to_le16(hdev->def_page_scan_window); | |
2409 | ||
2410 | if (__cpu_to_le16(hdev->page_scan_interval) != cp.interval || | |
2411 | __cpu_to_le16(hdev->page_scan_window) != cp.window) { | |
2412 | err = __hci_cmd_sync_status(hdev, | |
2413 | HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, | |
2414 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
2415 | if (err) | |
2416 | return err; | |
2417 | } | |
2418 | ||
2419 | if (hdev->page_scan_type != type) | |
2420 | err = __hci_cmd_sync_status(hdev, | |
2421 | HCI_OP_WRITE_PAGE_SCAN_TYPE, | |
2422 | sizeof(type), &type, | |
2423 | HCI_CMD_TIMEOUT); | |
2424 | ||
2425 | return err; | |
2426 | } | |
2427 | ||
2428 | static bool disconnected_accept_list_entries(struct hci_dev *hdev) | |
2429 | { | |
2430 | struct bdaddr_list *b; | |
2431 | ||
2432 | list_for_each_entry(b, &hdev->accept_list, list) { | |
2433 | struct hci_conn *conn; | |
2434 | ||
2435 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &b->bdaddr); | |
2436 | if (!conn) | |
2437 | return true; | |
2438 | ||
2439 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
2440 | return true; | |
2441 | } | |
2442 | ||
2443 | return false; | |
2444 | } | |
2445 | ||
2446 | static int hci_write_scan_enable_sync(struct hci_dev *hdev, u8 val) | |
2447 | { | |
2448 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SCAN_ENABLE, | |
2449 | sizeof(val), &val, | |
2450 | HCI_CMD_TIMEOUT); | |
2451 | } | |
2452 | ||
451d95a9 | 2453 | int hci_update_scan_sync(struct hci_dev *hdev) |
cf75ad8b LAD |
2454 | { |
2455 | u8 scan; | |
2456 | ||
2457 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) | |
2458 | return 0; | |
2459 | ||
2460 | if (!hdev_is_powered(hdev)) | |
2461 | return 0; | |
2462 | ||
2463 | if (mgmt_powering_down(hdev)) | |
2464 | return 0; | |
2465 | ||
2466 | if (hdev->scanning_paused) | |
2467 | return 0; | |
2468 | ||
2469 | if (hci_dev_test_flag(hdev, HCI_CONNECTABLE) || | |
2470 | disconnected_accept_list_entries(hdev)) | |
2471 | scan = SCAN_PAGE; | |
2472 | else | |
2473 | scan = SCAN_DISABLED; | |
2474 | ||
2475 | if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) | |
2476 | scan |= SCAN_INQUIRY; | |
2477 | ||
2478 | if (test_bit(HCI_PSCAN, &hdev->flags) == !!(scan & SCAN_PAGE) && | |
2479 | test_bit(HCI_ISCAN, &hdev->flags) == !!(scan & SCAN_INQUIRY)) | |
2480 | return 0; | |
2481 | ||
2482 | return hci_write_scan_enable_sync(hdev, scan); | |
2483 | } | |
2484 | ||
6f6ff38a | 2485 | int hci_update_name_sync(struct hci_dev *hdev) |
cf75ad8b LAD |
2486 | { |
2487 | struct hci_cp_write_local_name cp; | |
2488 | ||
2489 | memset(&cp, 0, sizeof(cp)); | |
2490 | ||
2491 | memcpy(cp.name, hdev->dev_name, sizeof(cp.name)); | |
2492 | ||
2493 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LOCAL_NAME, | |
2494 | sizeof(cp), &cp, | |
2495 | HCI_CMD_TIMEOUT); | |
2496 | } | |
2497 | ||
2498 | /* This function perform powered update HCI command sequence after the HCI init | |
2499 | * sequence which end up resetting all states, the sequence is as follows: | |
2500 | * | |
2501 | * HCI_SSP_ENABLED(Enable SSP) | |
2502 | * HCI_LE_ENABLED(Enable LE) | |
2503 | * HCI_LE_ENABLED(use_ll_privacy(Add local IRK to Resolving List) -> | |
2504 | * Update adv data) | |
2505 | * Enable Authentication | |
2506 | * lmp_bredr_capable(Set Fast Connectable -> Set Scan Type -> Set Class -> | |
2507 | * Set Name -> Set EIR) | |
2508 | */ | |
2509 | int hci_powered_update_sync(struct hci_dev *hdev) | |
2510 | { | |
2511 | int err; | |
2512 | ||
2513 | /* Register the available SMP channels (BR/EDR and LE) only when | |
2514 | * successfully powering on the controller. This late | |
2515 | * registration is required so that LE SMP can clearly decide if | |
2516 | * the public address or static address is used. | |
2517 | */ | |
2518 | smp_register(hdev); | |
2519 | ||
2520 | err = hci_write_ssp_mode_sync(hdev, 0x01); | |
2521 | if (err) | |
2522 | return err; | |
2523 | ||
2524 | err = hci_write_le_host_supported_sync(hdev, 0x01, 0x00); | |
2525 | if (err) | |
2526 | return err; | |
2527 | ||
2528 | err = hci_powered_update_adv_sync(hdev); | |
2529 | if (err) | |
2530 | return err; | |
2531 | ||
2532 | err = hci_write_auth_enable_sync(hdev); | |
2533 | if (err) | |
2534 | return err; | |
2535 | ||
2536 | if (lmp_bredr_capable(hdev)) { | |
2537 | if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) | |
2538 | hci_write_fast_connectable_sync(hdev, true); | |
2539 | else | |
2540 | hci_write_fast_connectable_sync(hdev, false); | |
2541 | hci_update_scan_sync(hdev); | |
2542 | hci_update_class_sync(hdev); | |
2543 | hci_update_name_sync(hdev); | |
2544 | hci_update_eir_sync(hdev); | |
2545 | } | |
2546 | ||
2547 | return 0; | |
2548 | } | |
2549 | ||
d0b13706 LAD |
2550 | /** |
2551 | * hci_dev_get_bd_addr_from_property - Get the Bluetooth Device Address | |
2552 | * (BD_ADDR) for a HCI device from | |
2553 | * a firmware node property. | |
2554 | * @hdev: The HCI device | |
cf75ad8b | 2555 | * |
d0b13706 LAD |
2556 | * Search the firmware node for 'local-bd-address'. |
2557 | * | |
2558 | * All-zero BD addresses are rejected, because those could be properties | |
2559 | * that exist in the firmware tables, but were not updated by the firmware. For | |
2560 | * example, the DTS could define 'local-bd-address', with zero BD addresses. | |
cf75ad8b | 2561 | */ |
d0b13706 | 2562 | static void hci_dev_get_bd_addr_from_property(struct hci_dev *hdev) |
cf75ad8b | 2563 | { |
d0b13706 LAD |
2564 | struct fwnode_handle *fwnode = dev_fwnode(hdev->dev.parent); |
2565 | bdaddr_t ba; | |
2566 | int ret; | |
cf75ad8b | 2567 | |
d0b13706 LAD |
2568 | ret = fwnode_property_read_u8_array(fwnode, "local-bd-address", |
2569 | (u8 *)&ba, sizeof(ba)); | |
2570 | if (ret < 0 || !bacmp(&ba, BDADDR_ANY)) | |
2571 | return; | |
cf75ad8b | 2572 | |
d0b13706 LAD |
2573 | bacpy(&hdev->public_addr, &ba); |
2574 | } | |
cf75ad8b | 2575 | |
d0b13706 LAD |
2576 | struct hci_init_stage { |
2577 | int (*func)(struct hci_dev *hdev); | |
2578 | }; | |
cf75ad8b | 2579 | |
d0b13706 LAD |
2580 | /* Run init stage NULL terminated function table */ |
2581 | static int hci_init_stage_sync(struct hci_dev *hdev, | |
2582 | const struct hci_init_stage *stage) | |
2583 | { | |
2584 | size_t i; | |
cf75ad8b | 2585 | |
d0b13706 LAD |
2586 | for (i = 0; stage[i].func; i++) { |
2587 | int err; | |
cf75ad8b | 2588 | |
d0b13706 LAD |
2589 | err = stage[i].func(hdev); |
2590 | if (err) | |
2591 | return err; | |
cf75ad8b LAD |
2592 | } |
2593 | ||
2594 | return 0; | |
2595 | } | |
2596 | ||
d0b13706 LAD |
2597 | /* Read Local Version */ |
2598 | static int hci_read_local_version_sync(struct hci_dev *hdev) | |
cf75ad8b | 2599 | { |
d0b13706 LAD |
2600 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_VERSION, |
2601 | 0, NULL, HCI_CMD_TIMEOUT); | |
2602 | } | |
cf75ad8b | 2603 | |
d0b13706 LAD |
2604 | /* Read BD Address */ |
2605 | static int hci_read_bd_addr_sync(struct hci_dev *hdev) | |
2606 | { | |
2607 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_BD_ADDR, | |
2608 | 0, NULL, HCI_CMD_TIMEOUT); | |
2609 | } | |
cf75ad8b | 2610 | |
d0b13706 LAD |
2611 | #define HCI_INIT(_func) \ |
2612 | { \ | |
2613 | .func = _func, \ | |
cf75ad8b LAD |
2614 | } |
2615 | ||
d0b13706 LAD |
2616 | static const struct hci_init_stage hci_init0[] = { |
2617 | /* HCI_OP_READ_LOCAL_VERSION */ | |
2618 | HCI_INIT(hci_read_local_version_sync), | |
2619 | /* HCI_OP_READ_BD_ADDR */ | |
2620 | HCI_INIT(hci_read_bd_addr_sync), | |
2621 | {} | |
2622 | }; | |
2623 | ||
2624 | int hci_reset_sync(struct hci_dev *hdev) | |
cf75ad8b | 2625 | { |
cf75ad8b LAD |
2626 | int err; |
2627 | ||
d0b13706 | 2628 | set_bit(HCI_RESET, &hdev->flags); |
cf75ad8b | 2629 | |
d0b13706 LAD |
2630 | err = __hci_cmd_sync_status(hdev, HCI_OP_RESET, 0, NULL, |
2631 | HCI_CMD_TIMEOUT); | |
2632 | if (err) | |
2633 | return err; | |
cf75ad8b | 2634 | |
d0b13706 LAD |
2635 | return 0; |
2636 | } | |
cf75ad8b | 2637 | |
d0b13706 LAD |
2638 | static int hci_init0_sync(struct hci_dev *hdev) |
2639 | { | |
2640 | int err; | |
cf75ad8b | 2641 | |
d0b13706 LAD |
2642 | bt_dev_dbg(hdev, ""); |
2643 | ||
2644 | /* Reset */ | |
2645 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { | |
2646 | err = hci_reset_sync(hdev); | |
cf75ad8b LAD |
2647 | if (err) |
2648 | return err; | |
2649 | } | |
2650 | ||
d0b13706 LAD |
2651 | return hci_init_stage_sync(hdev, hci_init0); |
2652 | } | |
abfeea47 | 2653 | |
d0b13706 LAD |
2654 | static int hci_unconf_init_sync(struct hci_dev *hdev) |
2655 | { | |
2656 | int err; | |
2657 | ||
2658 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
cf75ad8b LAD |
2659 | return 0; |
2660 | ||
d0b13706 LAD |
2661 | err = hci_init0_sync(hdev); |
2662 | if (err < 0) | |
2663 | return err; | |
cf75ad8b | 2664 | |
d0b13706 LAD |
2665 | if (hci_dev_test_flag(hdev, HCI_SETUP)) |
2666 | hci_debugfs_create_basic(hdev); | |
cf75ad8b LAD |
2667 | |
2668 | return 0; | |
2669 | } | |
2670 | ||
d0b13706 LAD |
2671 | /* Read Local Supported Features. */ |
2672 | static int hci_read_local_features_sync(struct hci_dev *hdev) | |
cf75ad8b | 2673 | { |
d0b13706 LAD |
2674 | /* Not all AMP controllers support this command */ |
2675 | if (hdev->dev_type == HCI_AMP && !(hdev->commands[14] & 0x20)) | |
2676 | return 0; | |
cf75ad8b | 2677 | |
d0b13706 LAD |
2678 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_FEATURES, |
2679 | 0, NULL, HCI_CMD_TIMEOUT); | |
cf75ad8b LAD |
2680 | } |
2681 | ||
d0b13706 LAD |
2682 | /* BR Controller init stage 1 command sequence */ |
2683 | static const struct hci_init_stage br_init1[] = { | |
2684 | /* HCI_OP_READ_LOCAL_FEATURES */ | |
2685 | HCI_INIT(hci_read_local_features_sync), | |
2686 | /* HCI_OP_READ_LOCAL_VERSION */ | |
2687 | HCI_INIT(hci_read_local_version_sync), | |
2688 | /* HCI_OP_READ_BD_ADDR */ | |
2689 | HCI_INIT(hci_read_bd_addr_sync), | |
2690 | {} | |
2691 | }; | |
2692 | ||
2693 | /* Read Local Commands */ | |
2694 | static int hci_read_local_cmds_sync(struct hci_dev *hdev) | |
cf75ad8b | 2695 | { |
d0b13706 LAD |
2696 | /* All Bluetooth 1.2 and later controllers should support the |
2697 | * HCI command for reading the local supported commands. | |
2698 | * | |
2699 | * Unfortunately some controllers indicate Bluetooth 1.2 support, | |
2700 | * but do not have support for this command. If that is the case, | |
2701 | * the driver can quirk the behavior and skip reading the local | |
2702 | * supported commands. | |
2703 | */ | |
2704 | if (hdev->hci_ver > BLUETOOTH_VER_1_1 && | |
2705 | !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks)) | |
2706 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_COMMANDS, | |
2707 | 0, NULL, HCI_CMD_TIMEOUT); | |
cf75ad8b | 2708 | |
d0b13706 | 2709 | return 0; |
cf75ad8b LAD |
2710 | } |
2711 | ||
d0b13706 LAD |
2712 | /* Read Local AMP Info */ |
2713 | static int hci_read_local_amp_info_sync(struct hci_dev *hdev) | |
cf75ad8b | 2714 | { |
d0b13706 LAD |
2715 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_AMP_INFO, |
2716 | 0, NULL, HCI_CMD_TIMEOUT); | |
cf75ad8b LAD |
2717 | } |
2718 | ||
d0b13706 LAD |
2719 | /* Read Data Blk size */ |
2720 | static int hci_read_data_block_size_sync(struct hci_dev *hdev) | |
cf75ad8b | 2721 | { |
d0b13706 LAD |
2722 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_DATA_BLOCK_SIZE, |
2723 | 0, NULL, HCI_CMD_TIMEOUT); | |
2724 | } | |
cf75ad8b | 2725 | |
d0b13706 LAD |
2726 | /* Read Flow Control Mode */ |
2727 | static int hci_read_flow_control_mode_sync(struct hci_dev *hdev) | |
2728 | { | |
2729 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_FLOW_CONTROL_MODE, | |
2730 | 0, NULL, HCI_CMD_TIMEOUT); | |
2731 | } | |
cf75ad8b | 2732 | |
d0b13706 LAD |
2733 | /* Read Location Data */ |
2734 | static int hci_read_location_data_sync(struct hci_dev *hdev) | |
2735 | { | |
2736 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCATION_DATA, | |
2737 | 0, NULL, HCI_CMD_TIMEOUT); | |
cf75ad8b LAD |
2738 | } |
2739 | ||
d0b13706 LAD |
2740 | /* AMP Controller init stage 1 command sequence */ |
2741 | static const struct hci_init_stage amp_init1[] = { | |
2742 | /* HCI_OP_READ_LOCAL_VERSION */ | |
2743 | HCI_INIT(hci_read_local_version_sync), | |
2744 | /* HCI_OP_READ_LOCAL_COMMANDS */ | |
2745 | HCI_INIT(hci_read_local_cmds_sync), | |
2746 | /* HCI_OP_READ_LOCAL_AMP_INFO */ | |
2747 | HCI_INIT(hci_read_local_amp_info_sync), | |
2748 | /* HCI_OP_READ_DATA_BLOCK_SIZE */ | |
2749 | HCI_INIT(hci_read_data_block_size_sync), | |
2750 | /* HCI_OP_READ_FLOW_CONTROL_MODE */ | |
2751 | HCI_INIT(hci_read_flow_control_mode_sync), | |
2752 | /* HCI_OP_READ_LOCATION_DATA */ | |
2753 | HCI_INIT(hci_read_location_data_sync), | |
2754 | }; | |
2755 | ||
2756 | static int hci_init1_sync(struct hci_dev *hdev) | |
cf75ad8b | 2757 | { |
d0b13706 | 2758 | int err; |
cf75ad8b | 2759 | |
d0b13706 | 2760 | bt_dev_dbg(hdev, ""); |
cf75ad8b | 2761 | |
d0b13706 LAD |
2762 | /* Reset */ |
2763 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { | |
2764 | err = hci_reset_sync(hdev); | |
2765 | if (err) | |
2766 | return err; | |
2767 | } | |
cf75ad8b | 2768 | |
d0b13706 LAD |
2769 | switch (hdev->dev_type) { |
2770 | case HCI_PRIMARY: | |
2771 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; | |
2772 | return hci_init_stage_sync(hdev, br_init1); | |
2773 | case HCI_AMP: | |
2774 | hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; | |
2775 | return hci_init_stage_sync(hdev, amp_init1); | |
2776 | default: | |
2777 | bt_dev_err(hdev, "Unknown device type %d", hdev->dev_type); | |
2778 | break; | |
2779 | } | |
2780 | ||
2781 | return 0; | |
cf75ad8b LAD |
2782 | } |
2783 | ||
d0b13706 LAD |
2784 | /* AMP Controller init stage 2 command sequence */ |
2785 | static const struct hci_init_stage amp_init2[] = { | |
2786 | /* HCI_OP_READ_LOCAL_FEATURES */ | |
2787 | HCI_INIT(hci_read_local_features_sync), | |
2788 | }; | |
2789 | ||
2790 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
2791 | static int hci_read_buffer_size_sync(struct hci_dev *hdev) | |
cf75ad8b | 2792 | { |
d0b13706 LAD |
2793 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_BUFFER_SIZE, |
2794 | 0, NULL, HCI_CMD_TIMEOUT); | |
2795 | } | |
cf75ad8b | 2796 | |
d0b13706 LAD |
2797 | /* Read Class of Device */ |
2798 | static int hci_read_dev_class_sync(struct hci_dev *hdev) | |
2799 | { | |
2800 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_CLASS_OF_DEV, | |
2801 | 0, NULL, HCI_CMD_TIMEOUT); | |
2802 | } | |
cf75ad8b | 2803 | |
d0b13706 LAD |
2804 | /* Read Local Name */ |
2805 | static int hci_read_local_name_sync(struct hci_dev *hdev) | |
2806 | { | |
2807 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_NAME, | |
2808 | 0, NULL, HCI_CMD_TIMEOUT); | |
2809 | } | |
cf75ad8b | 2810 | |
d0b13706 LAD |
2811 | /* Read Voice Setting */ |
2812 | static int hci_read_voice_setting_sync(struct hci_dev *hdev) | |
2813 | { | |
2814 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_VOICE_SETTING, | |
2815 | 0, NULL, HCI_CMD_TIMEOUT); | |
cf75ad8b LAD |
2816 | } |
2817 | ||
d0b13706 LAD |
2818 | /* Read Number of Supported IAC */ |
2819 | static int hci_read_num_supported_iac_sync(struct hci_dev *hdev) | |
cf75ad8b | 2820 | { |
d0b13706 LAD |
2821 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_NUM_SUPPORTED_IAC, |
2822 | 0, NULL, HCI_CMD_TIMEOUT); | |
2823 | } | |
cf75ad8b | 2824 | |
d0b13706 LAD |
2825 | /* Read Current IAC LAP */ |
2826 | static int hci_read_current_iac_lap_sync(struct hci_dev *hdev) | |
2827 | { | |
2828 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_CURRENT_IAC_LAP, | |
2829 | 0, NULL, HCI_CMD_TIMEOUT); | |
cf75ad8b LAD |
2830 | } |
2831 | ||
d0b13706 LAD |
2832 | static int hci_set_event_filter_sync(struct hci_dev *hdev, u8 flt_type, |
2833 | u8 cond_type, bdaddr_t *bdaddr, | |
2834 | u8 auto_accept) | |
cf75ad8b | 2835 | { |
d0b13706 | 2836 | struct hci_cp_set_event_filter cp; |
cf75ad8b | 2837 | |
d0b13706 | 2838 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) |
cf75ad8b LAD |
2839 | return 0; |
2840 | ||
0eaecfb2 IFM |
2841 | if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks)) |
2842 | return 0; | |
2843 | ||
d0b13706 LAD |
2844 | memset(&cp, 0, sizeof(cp)); |
2845 | cp.flt_type = flt_type; | |
cf75ad8b | 2846 | |
d0b13706 LAD |
2847 | if (flt_type != HCI_FLT_CLEAR_ALL) { |
2848 | cp.cond_type = cond_type; | |
2849 | bacpy(&cp.addr_conn_flt.bdaddr, bdaddr); | |
2850 | cp.addr_conn_flt.auto_accept = auto_accept; | |
cf75ad8b LAD |
2851 | } |
2852 | ||
d0b13706 LAD |
2853 | return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_FLT, |
2854 | flt_type == HCI_FLT_CLEAR_ALL ? | |
2855 | sizeof(cp.flt_type) : sizeof(cp), &cp, | |
2856 | HCI_CMD_TIMEOUT); | |
cf75ad8b LAD |
2857 | } |
2858 | ||
d0b13706 | 2859 | static int hci_clear_event_filter_sync(struct hci_dev *hdev) |
cf75ad8b | 2860 | { |
d0b13706 LAD |
2861 | if (!hci_dev_test_flag(hdev, HCI_EVENT_FILTER_CONFIGURED)) |
2862 | return 0; | |
2863 | ||
0eaecfb2 IFM |
2864 | /* In theory the state machine should not reach here unless |
2865 | * a hci_set_event_filter_sync() call succeeds, but we do | |
2866 | * the check both for parity and as a future reminder. | |
2867 | */ | |
2868 | if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks)) | |
2869 | return 0; | |
2870 | ||
d0b13706 LAD |
2871 | return hci_set_event_filter_sync(hdev, HCI_FLT_CLEAR_ALL, 0x00, |
2872 | BDADDR_ANY, 0x00); | |
2873 | } | |
2874 | ||
2875 | /* Connection accept timeout ~20 secs */ | |
2876 | static int hci_write_ca_timeout_sync(struct hci_dev *hdev) | |
2877 | { | |
2878 | __le16 param = cpu_to_le16(0x7d00); | |
2879 | ||
2880 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CA_TIMEOUT, | |
2881 | sizeof(param), ¶m, HCI_CMD_TIMEOUT); | |
2882 | } | |
2883 | ||
2884 | /* BR Controller init stage 2 command sequence */ | |
2885 | static const struct hci_init_stage br_init2[] = { | |
2886 | /* HCI_OP_READ_BUFFER_SIZE */ | |
2887 | HCI_INIT(hci_read_buffer_size_sync), | |
2888 | /* HCI_OP_READ_CLASS_OF_DEV */ | |
2889 | HCI_INIT(hci_read_dev_class_sync), | |
2890 | /* HCI_OP_READ_LOCAL_NAME */ | |
2891 | HCI_INIT(hci_read_local_name_sync), | |
2892 | /* HCI_OP_READ_VOICE_SETTING */ | |
2893 | HCI_INIT(hci_read_voice_setting_sync), | |
2894 | /* HCI_OP_READ_NUM_SUPPORTED_IAC */ | |
2895 | HCI_INIT(hci_read_num_supported_iac_sync), | |
2896 | /* HCI_OP_READ_CURRENT_IAC_LAP */ | |
2897 | HCI_INIT(hci_read_current_iac_lap_sync), | |
2898 | /* HCI_OP_SET_EVENT_FLT */ | |
2899 | HCI_INIT(hci_clear_event_filter_sync), | |
2900 | /* HCI_OP_WRITE_CA_TIMEOUT */ | |
2901 | HCI_INIT(hci_write_ca_timeout_sync), | |
2902 | {} | |
2903 | }; | |
2904 | ||
2905 | static int hci_write_ssp_mode_1_sync(struct hci_dev *hdev) | |
2906 | { | |
2907 | u8 mode = 0x01; | |
2908 | ||
2909 | if (!lmp_ssp_capable(hdev) || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) | |
2910 | return 0; | |
2911 | ||
2912 | /* When SSP is available, then the host features page | |
2913 | * should also be available as well. However some | |
2914 | * controllers list the max_page as 0 as long as SSP | |
2915 | * has not been enabled. To achieve proper debugging | |
2916 | * output, force the minimum max_page to 1 at least. | |
2917 | */ | |
2918 | hdev->max_page = 0x01; | |
2919 | ||
2920 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_MODE, | |
2921 | sizeof(mode), &mode, HCI_CMD_TIMEOUT); | |
2922 | } | |
2923 | ||
2924 | static int hci_write_eir_sync(struct hci_dev *hdev) | |
2925 | { | |
2926 | struct hci_cp_write_eir cp; | |
2927 | ||
2928 | if (!lmp_ssp_capable(hdev) || hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) | |
2929 | return 0; | |
2930 | ||
2931 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
2932 | memset(&cp, 0, sizeof(cp)); | |
2933 | ||
2934 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp, | |
2935 | HCI_CMD_TIMEOUT); | |
2936 | } | |
2937 | ||
2938 | static int hci_write_inquiry_mode_sync(struct hci_dev *hdev) | |
2939 | { | |
2940 | u8 mode; | |
2941 | ||
2942 | if (!lmp_inq_rssi_capable(hdev) && | |
2943 | !test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) | |
2944 | return 0; | |
2945 | ||
2946 | /* If Extended Inquiry Result events are supported, then | |
2947 | * they are clearly preferred over Inquiry Result with RSSI | |
2948 | * events. | |
2949 | */ | |
2950 | mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01; | |
2951 | ||
2952 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_INQUIRY_MODE, | |
2953 | sizeof(mode), &mode, HCI_CMD_TIMEOUT); | |
2954 | } | |
2955 | ||
2956 | static int hci_read_inq_rsp_tx_power_sync(struct hci_dev *hdev) | |
2957 | { | |
2958 | if (!lmp_inq_tx_pwr_capable(hdev)) | |
2959 | return 0; | |
2960 | ||
2961 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_INQ_RSP_TX_POWER, | |
2962 | 0, NULL, HCI_CMD_TIMEOUT); | |
2963 | } | |
2964 | ||
2965 | static int hci_read_local_ext_features_sync(struct hci_dev *hdev, u8 page) | |
2966 | { | |
2967 | struct hci_cp_read_local_ext_features cp; | |
2968 | ||
2969 | if (!lmp_ext_feat_capable(hdev)) | |
2970 | return 0; | |
2971 | ||
2972 | memset(&cp, 0, sizeof(cp)); | |
2973 | cp.page = page; | |
2974 | ||
2975 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
2976 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
2977 | } | |
2978 | ||
2979 | static int hci_read_local_ext_features_1_sync(struct hci_dev *hdev) | |
2980 | { | |
2981 | return hci_read_local_ext_features_sync(hdev, 0x01); | |
2982 | } | |
2983 | ||
2984 | /* HCI Controller init stage 2 command sequence */ | |
2985 | static const struct hci_init_stage hci_init2[] = { | |
2986 | /* HCI_OP_READ_LOCAL_COMMANDS */ | |
2987 | HCI_INIT(hci_read_local_cmds_sync), | |
2988 | /* HCI_OP_WRITE_SSP_MODE */ | |
2989 | HCI_INIT(hci_write_ssp_mode_1_sync), | |
2990 | /* HCI_OP_WRITE_EIR */ | |
2991 | HCI_INIT(hci_write_eir_sync), | |
2992 | /* HCI_OP_WRITE_INQUIRY_MODE */ | |
2993 | HCI_INIT(hci_write_inquiry_mode_sync), | |
2994 | /* HCI_OP_READ_INQ_RSP_TX_POWER */ | |
2995 | HCI_INIT(hci_read_inq_rsp_tx_power_sync), | |
2996 | /* HCI_OP_READ_LOCAL_EXT_FEATURES */ | |
2997 | HCI_INIT(hci_read_local_ext_features_1_sync), | |
2998 | /* HCI_OP_WRITE_AUTH_ENABLE */ | |
2999 | HCI_INIT(hci_write_auth_enable_sync), | |
3000 | {} | |
3001 | }; | |
3002 | ||
3003 | /* Read LE Buffer Size */ | |
3004 | static int hci_le_read_buffer_size_sync(struct hci_dev *hdev) | |
3005 | { | |
3006 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_BUFFER_SIZE, | |
3007 | 0, NULL, HCI_CMD_TIMEOUT); | |
3008 | } | |
3009 | ||
3010 | /* Read LE Local Supported Features */ | |
3011 | static int hci_le_read_local_features_sync(struct hci_dev *hdev) | |
3012 | { | |
3013 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_LOCAL_FEATURES, | |
3014 | 0, NULL, HCI_CMD_TIMEOUT); | |
3015 | } | |
3016 | ||
3017 | /* Read LE Supported States */ | |
3018 | static int hci_le_read_supported_states_sync(struct hci_dev *hdev) | |
3019 | { | |
3020 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_SUPPORTED_STATES, | |
3021 | 0, NULL, HCI_CMD_TIMEOUT); | |
3022 | } | |
3023 | ||
3024 | /* LE Controller init stage 2 command sequence */ | |
3025 | static const struct hci_init_stage le_init2[] = { | |
3026 | /* HCI_OP_LE_READ_BUFFER_SIZE */ | |
3027 | HCI_INIT(hci_le_read_buffer_size_sync), | |
3028 | /* HCI_OP_LE_READ_LOCAL_FEATURES */ | |
3029 | HCI_INIT(hci_le_read_local_features_sync), | |
3030 | /* HCI_OP_LE_READ_SUPPORTED_STATES */ | |
3031 | HCI_INIT(hci_le_read_supported_states_sync), | |
3032 | {} | |
3033 | }; | |
3034 | ||
3035 | static int hci_init2_sync(struct hci_dev *hdev) | |
3036 | { | |
3037 | int err; | |
3038 | ||
3039 | bt_dev_dbg(hdev, ""); | |
3040 | ||
3041 | if (hdev->dev_type == HCI_AMP) | |
3042 | return hci_init_stage_sync(hdev, amp_init2); | |
3043 | ||
3044 | if (lmp_bredr_capable(hdev)) { | |
3045 | err = hci_init_stage_sync(hdev, br_init2); | |
3046 | if (err) | |
3047 | return err; | |
3048 | } else { | |
3049 | hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); | |
3050 | } | |
3051 | ||
3052 | if (lmp_le_capable(hdev)) { | |
3053 | err = hci_init_stage_sync(hdev, le_init2); | |
3054 | if (err) | |
3055 | return err; | |
3056 | /* LE-only controllers have LE implicitly enabled */ | |
3057 | if (!lmp_bredr_capable(hdev)) | |
3058 | hci_dev_set_flag(hdev, HCI_LE_ENABLED); | |
3059 | } | |
3060 | ||
3061 | return hci_init_stage_sync(hdev, hci_init2); | |
3062 | } | |
3063 | ||
3064 | static int hci_set_event_mask_sync(struct hci_dev *hdev) | |
3065 | { | |
3066 | /* The second byte is 0xff instead of 0x9f (two reserved bits | |
3067 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
3068 | * command otherwise. | |
3069 | */ | |
3070 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
3071 | ||
3072 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
3073 | * any event mask for pre 1.2 devices. | |
3074 | */ | |
3075 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
3076 | return 0; | |
3077 | ||
3078 | if (lmp_bredr_capable(hdev)) { | |
3079 | events[4] |= 0x01; /* Flow Specification Complete */ | |
182ee45d LAD |
3080 | |
3081 | /* Don't set Disconnect Complete when suspended as that | |
3082 | * would wakeup the host when disconnecting due to | |
3083 | * suspend. | |
3084 | */ | |
3085 | if (hdev->suspended) | |
3086 | events[0] &= 0xef; | |
d0b13706 LAD |
3087 | } else { |
3088 | /* Use a different default for LE-only devices */ | |
3089 | memset(events, 0, sizeof(events)); | |
3090 | events[1] |= 0x20; /* Command Complete */ | |
3091 | events[1] |= 0x40; /* Command Status */ | |
3092 | events[1] |= 0x80; /* Hardware Error */ | |
3093 | ||
3094 | /* If the controller supports the Disconnect command, enable | |
3095 | * the corresponding event. In addition enable packet flow | |
3096 | * control related events. | |
3097 | */ | |
3098 | if (hdev->commands[0] & 0x20) { | |
182ee45d LAD |
3099 | /* Don't set Disconnect Complete when suspended as that |
3100 | * would wakeup the host when disconnecting due to | |
3101 | * suspend. | |
3102 | */ | |
3103 | if (!hdev->suspended) | |
3104 | events[0] |= 0x10; /* Disconnection Complete */ | |
d0b13706 LAD |
3105 | events[2] |= 0x04; /* Number of Completed Packets */ |
3106 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
3107 | } | |
3108 | ||
3109 | /* If the controller supports the Read Remote Version | |
3110 | * Information command, enable the corresponding event. | |
3111 | */ | |
3112 | if (hdev->commands[2] & 0x80) | |
3113 | events[1] |= 0x08; /* Read Remote Version Information | |
3114 | * Complete | |
3115 | */ | |
3116 | ||
3117 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) { | |
3118 | events[0] |= 0x80; /* Encryption Change */ | |
3119 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
3120 | } | |
3121 | } | |
3122 | ||
3123 | if (lmp_inq_rssi_capable(hdev) || | |
3124 | test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks)) | |
3125 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
3126 | ||
3127 | if (lmp_ext_feat_capable(hdev)) | |
3128 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
3129 | ||
3130 | if (lmp_esco_capable(hdev)) { | |
3131 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
3132 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
3133 | } | |
3134 | ||
3135 | if (lmp_sniffsubr_capable(hdev)) | |
3136 | events[5] |= 0x20; /* Sniff Subrating */ | |
3137 | ||
3138 | if (lmp_pause_enc_capable(hdev)) | |
3139 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
3140 | ||
3141 | if (lmp_ext_inq_capable(hdev)) | |
3142 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
3143 | ||
3144 | if (lmp_no_flush_capable(hdev)) | |
3145 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
3146 | ||
3147 | if (lmp_lsto_capable(hdev)) | |
3148 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
3149 | ||
3150 | if (lmp_ssp_capable(hdev)) { | |
3151 | events[6] |= 0x01; /* IO Capability Request */ | |
3152 | events[6] |= 0x02; /* IO Capability Response */ | |
3153 | events[6] |= 0x04; /* User Confirmation Request */ | |
3154 | events[6] |= 0x08; /* User Passkey Request */ | |
3155 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
3156 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
3157 | events[7] |= 0x04; /* User Passkey Notification */ | |
3158 | events[7] |= 0x08; /* Keypress Notification */ | |
3159 | events[7] |= 0x10; /* Remote Host Supported | |
3160 | * Features Notification | |
3161 | */ | |
3162 | } | |
3163 | ||
3164 | if (lmp_le_capable(hdev)) | |
3165 | events[7] |= 0x20; /* LE Meta-Event */ | |
3166 | ||
3167 | return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_MASK, | |
3168 | sizeof(events), events, HCI_CMD_TIMEOUT); | |
3169 | } | |
3170 | ||
3171 | static int hci_read_stored_link_key_sync(struct hci_dev *hdev) | |
3172 | { | |
3173 | struct hci_cp_read_stored_link_key cp; | |
3174 | ||
3175 | if (!(hdev->commands[6] & 0x20) || | |
3176 | test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) | |
3177 | return 0; | |
3178 | ||
3179 | memset(&cp, 0, sizeof(cp)); | |
3180 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
3181 | cp.read_all = 0x01; | |
3182 | ||
3183 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_STORED_LINK_KEY, | |
3184 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
3185 | } | |
3186 | ||
3187 | static int hci_setup_link_policy_sync(struct hci_dev *hdev) | |
3188 | { | |
3189 | struct hci_cp_write_def_link_policy cp; | |
3190 | u16 link_policy = 0; | |
3191 | ||
3192 | if (!(hdev->commands[5] & 0x10)) | |
3193 | return 0; | |
3194 | ||
3195 | memset(&cp, 0, sizeof(cp)); | |
3196 | ||
3197 | if (lmp_rswitch_capable(hdev)) | |
3198 | link_policy |= HCI_LP_RSWITCH; | |
3199 | if (lmp_hold_capable(hdev)) | |
3200 | link_policy |= HCI_LP_HOLD; | |
3201 | if (lmp_sniff_capable(hdev)) | |
3202 | link_policy |= HCI_LP_SNIFF; | |
3203 | if (lmp_park_capable(hdev)) | |
3204 | link_policy |= HCI_LP_PARK; | |
3205 | ||
3206 | cp.policy = cpu_to_le16(link_policy); | |
3207 | ||
3208 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, | |
3209 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
3210 | } | |
3211 | ||
3212 | static int hci_read_page_scan_activity_sync(struct hci_dev *hdev) | |
3213 | { | |
3214 | if (!(hdev->commands[8] & 0x01)) | |
3215 | return 0; | |
3216 | ||
3217 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_PAGE_SCAN_ACTIVITY, | |
3218 | 0, NULL, HCI_CMD_TIMEOUT); | |
3219 | } | |
3220 | ||
3221 | static int hci_read_def_err_data_reporting_sync(struct hci_dev *hdev) | |
3222 | { | |
3223 | if (!(hdev->commands[18] & 0x04) || | |
3224 | test_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks)) | |
3225 | return 0; | |
3226 | ||
3227 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_DEF_ERR_DATA_REPORTING, | |
3228 | 0, NULL, HCI_CMD_TIMEOUT); | |
3229 | } | |
3230 | ||
3231 | static int hci_read_page_scan_type_sync(struct hci_dev *hdev) | |
3232 | { | |
3233 | /* Some older Broadcom based Bluetooth 1.2 controllers do not | |
3234 | * support the Read Page Scan Type command. Check support for | |
3235 | * this command in the bit mask of supported commands. | |
3236 | */ | |
3237 | if (!(hdev->commands[13] & 0x01)) | |
3238 | return 0; | |
3239 | ||
3240 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_PAGE_SCAN_TYPE, | |
3241 | 0, NULL, HCI_CMD_TIMEOUT); | |
3242 | } | |
3243 | ||
3244 | /* Read features beyond page 1 if available */ | |
3245 | static int hci_read_local_ext_features_all_sync(struct hci_dev *hdev) | |
3246 | { | |
3247 | u8 page; | |
3248 | int err; | |
3249 | ||
3250 | if (!lmp_ext_feat_capable(hdev)) | |
3251 | return 0; | |
3252 | ||
3253 | for (page = 2; page < HCI_MAX_PAGES && page <= hdev->max_page; | |
3254 | page++) { | |
3255 | err = hci_read_local_ext_features_sync(hdev, page); | |
3256 | if (err) | |
3257 | return err; | |
3258 | } | |
3259 | ||
3260 | return 0; | |
3261 | } | |
3262 | ||
3263 | /* HCI Controller init stage 3 command sequence */ | |
3264 | static const struct hci_init_stage hci_init3[] = { | |
3265 | /* HCI_OP_SET_EVENT_MASK */ | |
3266 | HCI_INIT(hci_set_event_mask_sync), | |
3267 | /* HCI_OP_READ_STORED_LINK_KEY */ | |
3268 | HCI_INIT(hci_read_stored_link_key_sync), | |
3269 | /* HCI_OP_WRITE_DEF_LINK_POLICY */ | |
3270 | HCI_INIT(hci_setup_link_policy_sync), | |
3271 | /* HCI_OP_READ_PAGE_SCAN_ACTIVITY */ | |
3272 | HCI_INIT(hci_read_page_scan_activity_sync), | |
3273 | /* HCI_OP_READ_DEF_ERR_DATA_REPORTING */ | |
3274 | HCI_INIT(hci_read_def_err_data_reporting_sync), | |
3275 | /* HCI_OP_READ_PAGE_SCAN_TYPE */ | |
3276 | HCI_INIT(hci_read_page_scan_type_sync), | |
3277 | /* HCI_OP_READ_LOCAL_EXT_FEATURES */ | |
3278 | HCI_INIT(hci_read_local_ext_features_all_sync), | |
3279 | {} | |
3280 | }; | |
3281 | ||
3282 | static int hci_le_set_event_mask_sync(struct hci_dev *hdev) | |
3283 | { | |
3284 | u8 events[8]; | |
3285 | ||
3286 | if (!lmp_le_capable(hdev)) | |
3287 | return 0; | |
3288 | ||
3289 | memset(events, 0, sizeof(events)); | |
3290 | ||
3291 | if (hdev->le_features[0] & HCI_LE_ENCRYPTION) | |
3292 | events[0] |= 0x10; /* LE Long Term Key Request */ | |
3293 | ||
3294 | /* If controller supports the Connection Parameters Request | |
3295 | * Link Layer Procedure, enable the corresponding event. | |
3296 | */ | |
3297 | if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC) | |
3298 | /* LE Remote Connection Parameter Request */ | |
3299 | events[0] |= 0x20; | |
3300 | ||
3301 | /* If the controller supports the Data Length Extension | |
3302 | * feature, enable the corresponding event. | |
3303 | */ | |
3304 | if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) | |
3305 | events[0] |= 0x40; /* LE Data Length Change */ | |
3306 | ||
a56a1138 LAD |
3307 | /* If the controller supports LL Privacy feature or LE Extended Adv, |
3308 | * enable the corresponding event. | |
d0b13706 | 3309 | */ |
a56a1138 | 3310 | if (use_enhanced_conn_complete(hdev)) |
d0b13706 LAD |
3311 | events[1] |= 0x02; /* LE Enhanced Connection Complete */ |
3312 | ||
3313 | /* If the controller supports Extended Scanner Filter | |
3314 | * Policies, enable the corresponding event. | |
3315 | */ | |
3316 | if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY) | |
3317 | events[1] |= 0x04; /* LE Direct Advertising Report */ | |
3318 | ||
3319 | /* If the controller supports Channel Selection Algorithm #2 | |
3320 | * feature, enable the corresponding event. | |
3321 | */ | |
3322 | if (hdev->le_features[1] & HCI_LE_CHAN_SEL_ALG2) | |
3323 | events[2] |= 0x08; /* LE Channel Selection Algorithm */ | |
3324 | ||
3325 | /* If the controller supports the LE Set Scan Enable command, | |
3326 | * enable the corresponding advertising report event. | |
3327 | */ | |
3328 | if (hdev->commands[26] & 0x08) | |
3329 | events[0] |= 0x02; /* LE Advertising Report */ | |
3330 | ||
3331 | /* If the controller supports the LE Create Connection | |
3332 | * command, enable the corresponding event. | |
3333 | */ | |
3334 | if (hdev->commands[26] & 0x10) | |
3335 | events[0] |= 0x01; /* LE Connection Complete */ | |
3336 | ||
3337 | /* If the controller supports the LE Connection Update | |
3338 | * command, enable the corresponding event. | |
3339 | */ | |
3340 | if (hdev->commands[27] & 0x04) | |
3341 | events[0] |= 0x04; /* LE Connection Update Complete */ | |
3342 | ||
3343 | /* If the controller supports the LE Read Remote Used Features | |
3344 | * command, enable the corresponding event. | |
3345 | */ | |
3346 | if (hdev->commands[27] & 0x20) | |
3347 | /* LE Read Remote Used Features Complete */ | |
3348 | events[0] |= 0x08; | |
3349 | ||
3350 | /* If the controller supports the LE Read Local P-256 | |
3351 | * Public Key command, enable the corresponding event. | |
3352 | */ | |
3353 | if (hdev->commands[34] & 0x02) | |
3354 | /* LE Read Local P-256 Public Key Complete */ | |
3355 | events[0] |= 0x80; | |
3356 | ||
3357 | /* If the controller supports the LE Generate DHKey | |
3358 | * command, enable the corresponding event. | |
3359 | */ | |
3360 | if (hdev->commands[34] & 0x04) | |
3361 | events[1] |= 0x01; /* LE Generate DHKey Complete */ | |
3362 | ||
3363 | /* If the controller supports the LE Set Default PHY or | |
3364 | * LE Set PHY commands, enable the corresponding event. | |
3365 | */ | |
3366 | if (hdev->commands[35] & (0x20 | 0x40)) | |
3367 | events[1] |= 0x08; /* LE PHY Update Complete */ | |
3368 | ||
3369 | /* If the controller supports LE Set Extended Scan Parameters | |
3370 | * and LE Set Extended Scan Enable commands, enable the | |
3371 | * corresponding event. | |
3372 | */ | |
3373 | if (use_ext_scan(hdev)) | |
3374 | events[1] |= 0x10; /* LE Extended Advertising Report */ | |
3375 | ||
3376 | /* If the controller supports the LE Extended Advertising | |
3377 | * command, enable the corresponding event. | |
3378 | */ | |
3379 | if (ext_adv_capable(hdev)) | |
3380 | events[2] |= 0x02; /* LE Advertising Set Terminated */ | |
3381 | ||
3382 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EVENT_MASK, | |
3383 | sizeof(events), events, HCI_CMD_TIMEOUT); | |
3384 | } | |
3385 | ||
3386 | /* Read LE Advertising Channel TX Power */ | |
3387 | static int hci_le_read_adv_tx_power_sync(struct hci_dev *hdev) | |
3388 | { | |
3389 | if ((hdev->commands[25] & 0x40) && !ext_adv_capable(hdev)) { | |
3390 | /* HCI TS spec forbids mixing of legacy and extended | |
3391 | * advertising commands wherein READ_ADV_TX_POWER is | |
3392 | * also included. So do not call it if extended adv | |
3393 | * is supported otherwise controller will return | |
3394 | * COMMAND_DISALLOWED for extended commands. | |
3395 | */ | |
3396 | return __hci_cmd_sync_status(hdev, | |
3397 | HCI_OP_LE_READ_ADV_TX_POWER, | |
3398 | 0, NULL, HCI_CMD_TIMEOUT); | |
3399 | } | |
3400 | ||
3401 | return 0; | |
3402 | } | |
3403 | ||
3404 | /* Read LE Min/Max Tx Power*/ | |
3405 | static int hci_le_read_tx_power_sync(struct hci_dev *hdev) | |
3406 | { | |
d2f8114f AG |
3407 | if (!(hdev->commands[38] & 0x80) || |
3408 | test_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks)) | |
d0b13706 LAD |
3409 | return 0; |
3410 | ||
3411 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_TRANSMIT_POWER, | |
3412 | 0, NULL, HCI_CMD_TIMEOUT); | |
3413 | } | |
3414 | ||
3415 | /* Read LE Accept List Size */ | |
3416 | static int hci_le_read_accept_list_size_sync(struct hci_dev *hdev) | |
3417 | { | |
3418 | if (!(hdev->commands[26] & 0x40)) | |
3419 | return 0; | |
3420 | ||
3421 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_ACCEPT_LIST_SIZE, | |
3422 | 0, NULL, HCI_CMD_TIMEOUT); | |
3423 | } | |
3424 | ||
3425 | /* Clear LE Accept List */ | |
3426 | static int hci_le_clear_accept_list_sync(struct hci_dev *hdev) | |
3427 | { | |
3428 | if (!(hdev->commands[26] & 0x80)) | |
3429 | return 0; | |
3430 | ||
3431 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_CLEAR_ACCEPT_LIST, 0, NULL, | |
3432 | HCI_CMD_TIMEOUT); | |
3433 | } | |
3434 | ||
3435 | /* Read LE Resolving List Size */ | |
3436 | static int hci_le_read_resolv_list_size_sync(struct hci_dev *hdev) | |
3437 | { | |
3438 | if (!(hdev->commands[34] & 0x40)) | |
3439 | return 0; | |
3440 | ||
3441 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_RESOLV_LIST_SIZE, | |
3442 | 0, NULL, HCI_CMD_TIMEOUT); | |
3443 | } | |
3444 | ||
3445 | /* Clear LE Resolving List */ | |
3446 | static int hci_le_clear_resolv_list_sync(struct hci_dev *hdev) | |
3447 | { | |
3448 | if (!(hdev->commands[34] & 0x20)) | |
3449 | return 0; | |
3450 | ||
3451 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_CLEAR_RESOLV_LIST, 0, NULL, | |
3452 | HCI_CMD_TIMEOUT); | |
3453 | } | |
3454 | ||
3455 | /* Set RPA timeout */ | |
3456 | static int hci_le_set_rpa_timeout_sync(struct hci_dev *hdev) | |
3457 | { | |
3458 | __le16 timeout = cpu_to_le16(hdev->rpa_timeout); | |
3459 | ||
3460 | if (!(hdev->commands[35] & 0x04)) | |
3461 | return 0; | |
3462 | ||
3463 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_RPA_TIMEOUT, | |
3464 | sizeof(timeout), &timeout, | |
3465 | HCI_CMD_TIMEOUT); | |
3466 | } | |
3467 | ||
3468 | /* Read LE Maximum Data Length */ | |
3469 | static int hci_le_read_max_data_len_sync(struct hci_dev *hdev) | |
3470 | { | |
3471 | if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT)) | |
3472 | return 0; | |
3473 | ||
3474 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL, | |
3475 | HCI_CMD_TIMEOUT); | |
3476 | } | |
3477 | ||
3478 | /* Read LE Suggested Default Data Length */ | |
3479 | static int hci_le_read_def_data_len_sync(struct hci_dev *hdev) | |
3480 | { | |
3481 | if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT)) | |
3482 | return 0; | |
3483 | ||
3484 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL, | |
3485 | HCI_CMD_TIMEOUT); | |
3486 | } | |
3487 | ||
3488 | /* Read LE Number of Supported Advertising Sets */ | |
3489 | static int hci_le_read_num_support_adv_sets_sync(struct hci_dev *hdev) | |
3490 | { | |
3491 | if (!ext_adv_capable(hdev)) | |
3492 | return 0; | |
3493 | ||
3494 | return __hci_cmd_sync_status(hdev, | |
3495 | HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, | |
3496 | 0, NULL, HCI_CMD_TIMEOUT); | |
3497 | } | |
3498 | ||
3499 | /* Write LE Host Supported */ | |
3500 | static int hci_set_le_support_sync(struct hci_dev *hdev) | |
3501 | { | |
3502 | struct hci_cp_write_le_host_supported cp; | |
3503 | ||
3504 | /* LE-only devices do not support explicit enablement */ | |
3505 | if (!lmp_bredr_capable(hdev)) | |
3506 | return 0; | |
3507 | ||
3508 | memset(&cp, 0, sizeof(cp)); | |
3509 | ||
3510 | if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { | |
3511 | cp.le = 0x01; | |
3512 | cp.simul = 0x00; | |
3513 | } | |
3514 | ||
3515 | if (cp.le == lmp_host_le_capable(hdev)) | |
3516 | return 0; | |
3517 | ||
3518 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED, | |
3519 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
3520 | } | |
3521 | ||
3522 | /* LE Controller init stage 3 command sequence */ | |
3523 | static const struct hci_init_stage le_init3[] = { | |
3524 | /* HCI_OP_LE_SET_EVENT_MASK */ | |
3525 | HCI_INIT(hci_le_set_event_mask_sync), | |
3526 | /* HCI_OP_LE_READ_ADV_TX_POWER */ | |
3527 | HCI_INIT(hci_le_read_adv_tx_power_sync), | |
3528 | /* HCI_OP_LE_READ_TRANSMIT_POWER */ | |
3529 | HCI_INIT(hci_le_read_tx_power_sync), | |
3530 | /* HCI_OP_LE_READ_ACCEPT_LIST_SIZE */ | |
3531 | HCI_INIT(hci_le_read_accept_list_size_sync), | |
3532 | /* HCI_OP_LE_CLEAR_ACCEPT_LIST */ | |
3533 | HCI_INIT(hci_le_clear_accept_list_sync), | |
3534 | /* HCI_OP_LE_READ_RESOLV_LIST_SIZE */ | |
3535 | HCI_INIT(hci_le_read_resolv_list_size_sync), | |
3536 | /* HCI_OP_LE_CLEAR_RESOLV_LIST */ | |
3537 | HCI_INIT(hci_le_clear_resolv_list_sync), | |
3538 | /* HCI_OP_LE_SET_RPA_TIMEOUT */ | |
3539 | HCI_INIT(hci_le_set_rpa_timeout_sync), | |
3540 | /* HCI_OP_LE_READ_MAX_DATA_LEN */ | |
3541 | HCI_INIT(hci_le_read_max_data_len_sync), | |
3542 | /* HCI_OP_LE_READ_DEF_DATA_LEN */ | |
3543 | HCI_INIT(hci_le_read_def_data_len_sync), | |
3544 | /* HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS */ | |
3545 | HCI_INIT(hci_le_read_num_support_adv_sets_sync), | |
3546 | /* HCI_OP_WRITE_LE_HOST_SUPPORTED */ | |
3547 | HCI_INIT(hci_set_le_support_sync), | |
3548 | {} | |
3549 | }; | |
3550 | ||
3551 | static int hci_init3_sync(struct hci_dev *hdev) | |
3552 | { | |
3553 | int err; | |
3554 | ||
3555 | bt_dev_dbg(hdev, ""); | |
3556 | ||
3557 | err = hci_init_stage_sync(hdev, hci_init3); | |
3558 | if (err) | |
3559 | return err; | |
3560 | ||
3561 | if (lmp_le_capable(hdev)) | |
3562 | return hci_init_stage_sync(hdev, le_init3); | |
3563 | ||
3564 | return 0; | |
3565 | } | |
3566 | ||
3567 | static int hci_delete_stored_link_key_sync(struct hci_dev *hdev) | |
3568 | { | |
3569 | struct hci_cp_delete_stored_link_key cp; | |
3570 | ||
3571 | /* Some Broadcom based Bluetooth controllers do not support the | |
3572 | * Delete Stored Link Key command. They are clearly indicating its | |
3573 | * absence in the bit mask of supported commands. | |
3574 | * | |
3575 | * Check the supported commands and only if the command is marked | |
3576 | * as supported send it. If not supported assume that the controller | |
3577 | * does not have actual support for stored link keys which makes this | |
3578 | * command redundant anyway. | |
3579 | * | |
3580 | * Some controllers indicate that they support handling deleting | |
3581 | * stored link keys, but they don't. The quirk lets a driver | |
3582 | * just disable this command. | |
3583 | */ | |
3584 | if (!(hdev->commands[6] & 0x80) || | |
3585 | test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) | |
3586 | return 0; | |
3587 | ||
3588 | memset(&cp, 0, sizeof(cp)); | |
3589 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
3590 | cp.delete_all = 0x01; | |
3591 | ||
3592 | return __hci_cmd_sync_status(hdev, HCI_OP_DELETE_STORED_LINK_KEY, | |
3593 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
3594 | } | |
3595 | ||
3596 | static int hci_set_event_mask_page_2_sync(struct hci_dev *hdev) | |
3597 | { | |
3598 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
3599 | bool changed = false; | |
3600 | ||
3601 | /* Set event mask page 2 if the HCI command for it is supported */ | |
3602 | if (!(hdev->commands[22] & 0x04)) | |
3603 | return 0; | |
3604 | ||
3605 | /* If Connectionless Peripheral Broadcast central role is supported | |
3606 | * enable all necessary events for it. | |
3607 | */ | |
3608 | if (lmp_cpb_central_capable(hdev)) { | |
3609 | events[1] |= 0x40; /* Triggered Clock Capture */ | |
3610 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
3611 | events[2] |= 0x10; /* Peripheral Page Response Timeout */ | |
3612 | events[2] |= 0x20; /* CPB Channel Map Change */ | |
3613 | changed = true; | |
3614 | } | |
3615 | ||
3616 | /* If Connectionless Peripheral Broadcast peripheral role is supported | |
3617 | * enable all necessary events for it. | |
3618 | */ | |
3619 | if (lmp_cpb_peripheral_capable(hdev)) { | |
3620 | events[2] |= 0x01; /* Synchronization Train Received */ | |
3621 | events[2] |= 0x02; /* CPB Receive */ | |
3622 | events[2] |= 0x04; /* CPB Timeout */ | |
3623 | events[2] |= 0x08; /* Truncated Page Complete */ | |
3624 | changed = true; | |
3625 | } | |
3626 | ||
3627 | /* Enable Authenticated Payload Timeout Expired event if supported */ | |
3628 | if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) { | |
3629 | events[2] |= 0x80; | |
3630 | changed = true; | |
3631 | } | |
3632 | ||
3633 | /* Some Broadcom based controllers indicate support for Set Event | |
3634 | * Mask Page 2 command, but then actually do not support it. Since | |
3635 | * the default value is all bits set to zero, the command is only | |
3636 | * required if the event mask has to be changed. In case no change | |
3637 | * to the event mask is needed, skip this command. | |
3638 | */ | |
3639 | if (!changed) | |
3640 | return 0; | |
3641 | ||
3642 | return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_MASK_PAGE_2, | |
3643 | sizeof(events), events, HCI_CMD_TIMEOUT); | |
3644 | } | |
3645 | ||
3646 | /* Read local codec list if the HCI command is supported */ | |
3647 | static int hci_read_local_codecs_sync(struct hci_dev *hdev) | |
3648 | { | |
3649 | if (!(hdev->commands[29] & 0x20)) | |
3650 | return 0; | |
3651 | ||
3652 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_CODECS, 0, NULL, | |
3653 | HCI_CMD_TIMEOUT); | |
3654 | } | |
3655 | ||
3656 | /* Read local pairing options if the HCI command is supported */ | |
3657 | static int hci_read_local_pairing_opts_sync(struct hci_dev *hdev) | |
3658 | { | |
3659 | if (!(hdev->commands[41] & 0x08)) | |
3660 | return 0; | |
3661 | ||
3662 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_PAIRING_OPTS, | |
3663 | 0, NULL, HCI_CMD_TIMEOUT); | |
3664 | } | |
3665 | ||
3666 | /* Get MWS transport configuration if the HCI command is supported */ | |
3667 | static int hci_get_mws_transport_config_sync(struct hci_dev *hdev) | |
3668 | { | |
3669 | if (!(hdev->commands[30] & 0x08)) | |
3670 | return 0; | |
3671 | ||
3672 | return __hci_cmd_sync_status(hdev, HCI_OP_GET_MWS_TRANSPORT_CONFIG, | |
3673 | 0, NULL, HCI_CMD_TIMEOUT); | |
3674 | } | |
3675 | ||
3676 | /* Check for Synchronization Train support */ | |
3677 | static int hci_read_sync_train_params_sync(struct hci_dev *hdev) | |
3678 | { | |
3679 | if (!lmp_sync_train_capable(hdev)) | |
3680 | return 0; | |
3681 | ||
3682 | return __hci_cmd_sync_status(hdev, HCI_OP_READ_SYNC_TRAIN_PARAMS, | |
3683 | 0, NULL, HCI_CMD_TIMEOUT); | |
3684 | } | |
3685 | ||
3686 | /* Enable Secure Connections if supported and configured */ | |
3687 | static int hci_write_sc_support_1_sync(struct hci_dev *hdev) | |
3688 | { | |
3689 | u8 support = 0x01; | |
3690 | ||
3691 | if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED) || | |
3692 | !bredr_sc_enabled(hdev)) | |
3693 | return 0; | |
3694 | ||
3695 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SC_SUPPORT, | |
3696 | sizeof(support), &support, | |
3697 | HCI_CMD_TIMEOUT); | |
3698 | } | |
3699 | ||
3700 | /* Set erroneous data reporting if supported to the wideband speech | |
3701 | * setting value | |
3702 | */ | |
3703 | static int hci_set_err_data_report_sync(struct hci_dev *hdev) | |
3704 | { | |
3705 | struct hci_cp_write_def_err_data_reporting cp; | |
3706 | bool enabled = hci_dev_test_flag(hdev, HCI_WIDEBAND_SPEECH_ENABLED); | |
3707 | ||
3708 | if (!(hdev->commands[18] & 0x08) || | |
3709 | test_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks)) | |
3710 | return 0; | |
3711 | ||
3712 | if (enabled == hdev->err_data_reporting) | |
3713 | return 0; | |
3714 | ||
3715 | memset(&cp, 0, sizeof(cp)); | |
3716 | cp.err_data_reporting = enabled ? ERR_DATA_REPORTING_ENABLED : | |
3717 | ERR_DATA_REPORTING_DISABLED; | |
3718 | ||
3719 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, | |
3720 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
3721 | } | |
3722 | ||
3723 | static const struct hci_init_stage hci_init4[] = { | |
3724 | /* HCI_OP_DELETE_STORED_LINK_KEY */ | |
3725 | HCI_INIT(hci_delete_stored_link_key_sync), | |
3726 | /* HCI_OP_SET_EVENT_MASK_PAGE_2 */ | |
3727 | HCI_INIT(hci_set_event_mask_page_2_sync), | |
3728 | /* HCI_OP_READ_LOCAL_CODECS */ | |
3729 | HCI_INIT(hci_read_local_codecs_sync), | |
3730 | /* HCI_OP_READ_LOCAL_PAIRING_OPTS */ | |
3731 | HCI_INIT(hci_read_local_pairing_opts_sync), | |
3732 | /* HCI_OP_GET_MWS_TRANSPORT_CONFIG */ | |
3733 | HCI_INIT(hci_get_mws_transport_config_sync), | |
3734 | /* HCI_OP_READ_SYNC_TRAIN_PARAMS */ | |
3735 | HCI_INIT(hci_read_sync_train_params_sync), | |
3736 | /* HCI_OP_WRITE_SC_SUPPORT */ | |
3737 | HCI_INIT(hci_write_sc_support_1_sync), | |
3738 | /* HCI_OP_WRITE_DEF_ERR_DATA_REPORTING */ | |
3739 | HCI_INIT(hci_set_err_data_report_sync), | |
3740 | {} | |
3741 | }; | |
3742 | ||
3743 | /* Set Suggested Default Data Length to maximum if supported */ | |
3744 | static int hci_le_set_write_def_data_len_sync(struct hci_dev *hdev) | |
3745 | { | |
3746 | struct hci_cp_le_write_def_data_len cp; | |
3747 | ||
3748 | if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT)) | |
3749 | return 0; | |
3750 | ||
3751 | memset(&cp, 0, sizeof(cp)); | |
3752 | cp.tx_len = cpu_to_le16(hdev->le_max_tx_len); | |
3753 | cp.tx_time = cpu_to_le16(hdev->le_max_tx_time); | |
3754 | ||
3755 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN, | |
3756 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
3757 | } | |
3758 | ||
3759 | /* Set Default PHY parameters if command is supported */ | |
3760 | static int hci_le_set_default_phy_sync(struct hci_dev *hdev) | |
3761 | { | |
3762 | struct hci_cp_le_set_default_phy cp; | |
3763 | ||
3764 | if (!(hdev->commands[35] & 0x20)) | |
3765 | return 0; | |
3766 | ||
3767 | memset(&cp, 0, sizeof(cp)); | |
3768 | cp.all_phys = 0x00; | |
3769 | cp.tx_phys = hdev->le_tx_def_phys; | |
3770 | cp.rx_phys = hdev->le_rx_def_phys; | |
3771 | ||
3772 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_DEFAULT_PHY, | |
3773 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
3774 | } | |
3775 | ||
3776 | static const struct hci_init_stage le_init4[] = { | |
3777 | /* HCI_OP_LE_WRITE_DEF_DATA_LEN */ | |
3778 | HCI_INIT(hci_le_set_write_def_data_len_sync), | |
3779 | /* HCI_OP_LE_SET_DEFAULT_PHY */ | |
3780 | HCI_INIT(hci_le_set_default_phy_sync), | |
3781 | {} | |
3782 | }; | |
3783 | ||
3784 | static int hci_init4_sync(struct hci_dev *hdev) | |
3785 | { | |
3786 | int err; | |
3787 | ||
3788 | bt_dev_dbg(hdev, ""); | |
3789 | ||
3790 | err = hci_init_stage_sync(hdev, hci_init4); | |
3791 | if (err) | |
3792 | return err; | |
3793 | ||
3794 | if (lmp_le_capable(hdev)) | |
3795 | return hci_init_stage_sync(hdev, le_init4); | |
3796 | ||
3797 | return 0; | |
3798 | } | |
3799 | ||
3800 | static int hci_init_sync(struct hci_dev *hdev) | |
3801 | { | |
3802 | int err; | |
3803 | ||
3804 | err = hci_init1_sync(hdev); | |
3805 | if (err < 0) | |
3806 | return err; | |
3807 | ||
3808 | if (hci_dev_test_flag(hdev, HCI_SETUP)) | |
3809 | hci_debugfs_create_basic(hdev); | |
3810 | ||
3811 | err = hci_init2_sync(hdev); | |
3812 | if (err < 0) | |
3813 | return err; | |
3814 | ||
3815 | /* HCI_PRIMARY covers both single-mode LE, BR/EDR and dual-mode | |
3816 | * BR/EDR/LE type controllers. AMP controllers only need the | |
3817 | * first two stages of init. | |
3818 | */ | |
3819 | if (hdev->dev_type != HCI_PRIMARY) | |
3820 | return 0; | |
3821 | ||
3822 | err = hci_init3_sync(hdev); | |
3823 | if (err < 0) | |
3824 | return err; | |
3825 | ||
3826 | err = hci_init4_sync(hdev); | |
3827 | if (err < 0) | |
3828 | return err; | |
3829 | ||
3830 | /* This function is only called when the controller is actually in | |
3831 | * configured state. When the controller is marked as unconfigured, | |
3832 | * this initialization procedure is not run. | |
3833 | * | |
3834 | * It means that it is possible that a controller runs through its | |
3835 | * setup phase and then discovers missing settings. If that is the | |
3836 | * case, then this function will not be called. It then will only | |
3837 | * be called during the config phase. | |
3838 | * | |
3839 | * So only when in setup phase or config phase, create the debugfs | |
3840 | * entries and register the SMP channels. | |
3841 | */ | |
3842 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && | |
3843 | !hci_dev_test_flag(hdev, HCI_CONFIG)) | |
3844 | return 0; | |
3845 | ||
3846 | hci_debugfs_create_common(hdev); | |
3847 | ||
3848 | if (lmp_bredr_capable(hdev)) | |
3849 | hci_debugfs_create_bredr(hdev); | |
3850 | ||
3851 | if (lmp_le_capable(hdev)) | |
3852 | hci_debugfs_create_le(hdev); | |
3853 | ||
3854 | return 0; | |
3855 | } | |
3856 | ||
6b5c1cda LAD |
3857 | #define HCI_QUIRK_BROKEN(_quirk, _desc) { HCI_QUIRK_BROKEN_##_quirk, _desc } |
3858 | ||
3859 | static const struct { | |
3860 | unsigned long quirk; | |
3861 | const char *desc; | |
3862 | } hci_broken_table[] = { | |
3863 | HCI_QUIRK_BROKEN(LOCAL_COMMANDS, | |
3864 | "HCI Read Local Supported Commands not supported"), | |
3865 | HCI_QUIRK_BROKEN(STORED_LINK_KEY, | |
3866 | "HCI Delete Stored Link Key command is advertised, " | |
3867 | "but not supported."), | |
3868 | HCI_QUIRK_BROKEN(ERR_DATA_REPORTING, | |
3869 | "HCI Read Default Erroneous Data Reporting command is " | |
3870 | "advertised, but not supported."), | |
3871 | HCI_QUIRK_BROKEN(READ_TRANSMIT_POWER, | |
3872 | "HCI Read Transmit Power Level command is advertised, " | |
3873 | "but not supported."), | |
3874 | HCI_QUIRK_BROKEN(FILTER_CLEAR_ALL, | |
3875 | "HCI Set Event Filter command not supported."), | |
3876 | HCI_QUIRK_BROKEN(ENHANCED_SETUP_SYNC_CONN, | |
3877 | "HCI Enhanced Setup Synchronous Connection command is " | |
3878 | "advertised, but not supported.") | |
3879 | }; | |
3880 | ||
d0b13706 LAD |
3881 | int hci_dev_open_sync(struct hci_dev *hdev) |
3882 | { | |
3883 | int ret = 0; | |
3884 | ||
3885 | bt_dev_dbg(hdev, ""); | |
3886 | ||
3887 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) { | |
3888 | ret = -ENODEV; | |
3889 | goto done; | |
3890 | } | |
3891 | ||
3892 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && | |
3893 | !hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
3894 | /* Check for rfkill but allow the HCI setup stage to | |
3895 | * proceed (which in itself doesn't cause any RF activity). | |
3896 | */ | |
3897 | if (hci_dev_test_flag(hdev, HCI_RFKILLED)) { | |
3898 | ret = -ERFKILL; | |
3899 | goto done; | |
3900 | } | |
3901 | ||
3902 | /* Check for valid public address or a configured static | |
3903 | * random address, but let the HCI setup proceed to | |
3904 | * be able to determine if there is a public address | |
3905 | * or not. | |
3906 | * | |
3907 | * In case of user channel usage, it is not important | |
3908 | * if a public address or static random address is | |
3909 | * available. | |
3910 | * | |
3911 | * This check is only valid for BR/EDR controllers | |
3912 | * since AMP controllers do not have an address. | |
3913 | */ | |
3914 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
3915 | hdev->dev_type == HCI_PRIMARY && | |
3916 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
3917 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
3918 | ret = -EADDRNOTAVAIL; | |
3919 | goto done; | |
3920 | } | |
3921 | } | |
3922 | ||
3923 | if (test_bit(HCI_UP, &hdev->flags)) { | |
3924 | ret = -EALREADY; | |
3925 | goto done; | |
3926 | } | |
3927 | ||
3928 | if (hdev->open(hdev)) { | |
3929 | ret = -EIO; | |
3930 | goto done; | |
3931 | } | |
3932 | ||
3933 | set_bit(HCI_RUNNING, &hdev->flags); | |
3934 | hci_sock_dev_event(hdev, HCI_DEV_OPEN); | |
3935 | ||
3936 | atomic_set(&hdev->cmd_cnt, 1); | |
3937 | set_bit(HCI_INIT, &hdev->flags); | |
3938 | ||
3939 | if (hci_dev_test_flag(hdev, HCI_SETUP) || | |
3940 | test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) { | |
3941 | bool invalid_bdaddr; | |
6b5c1cda | 3942 | size_t i; |
d0b13706 LAD |
3943 | |
3944 | hci_sock_dev_event(hdev, HCI_DEV_SETUP); | |
3945 | ||
3946 | if (hdev->setup) | |
3947 | ret = hdev->setup(hdev); | |
3948 | ||
6b5c1cda LAD |
3949 | for (i = 0; i < ARRAY_SIZE(hci_broken_table); i++) { |
3950 | if (test_bit(hci_broken_table[i].quirk, &hdev->quirks)) | |
3951 | bt_dev_warn(hdev, "%s", | |
3952 | hci_broken_table[i].desc); | |
3953 | } | |
3954 | ||
d0b13706 LAD |
3955 | /* The transport driver can set the quirk to mark the |
3956 | * BD_ADDR invalid before creating the HCI device or in | |
3957 | * its setup callback. | |
3958 | */ | |
3959 | invalid_bdaddr = test_bit(HCI_QUIRK_INVALID_BDADDR, | |
3960 | &hdev->quirks); | |
3961 | ||
3962 | if (ret) | |
3963 | goto setup_failed; | |
3964 | ||
3965 | if (test_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks)) { | |
3966 | if (!bacmp(&hdev->public_addr, BDADDR_ANY)) | |
3967 | hci_dev_get_bd_addr_from_property(hdev); | |
3968 | ||
3969 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
3970 | hdev->set_bdaddr) { | |
3971 | ret = hdev->set_bdaddr(hdev, | |
3972 | &hdev->public_addr); | |
3973 | ||
3974 | /* If setting of the BD_ADDR from the device | |
3975 | * property succeeds, then treat the address | |
3976 | * as valid even if the invalid BD_ADDR | |
3977 | * quirk indicates otherwise. | |
3978 | */ | |
3979 | if (!ret) | |
3980 | invalid_bdaddr = false; | |
3981 | } | |
3982 | } | |
3983 | ||
3984 | setup_failed: | |
3985 | /* The transport driver can set these quirks before | |
3986 | * creating the HCI device or in its setup callback. | |
3987 | * | |
3988 | * For the invalid BD_ADDR quirk it is possible that | |
3989 | * it becomes a valid address if the bootloader does | |
3990 | * provide it (see above). | |
3991 | * | |
3992 | * In case any of them is set, the controller has to | |
3993 | * start up as unconfigured. | |
3994 | */ | |
3995 | if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) || | |
3996 | invalid_bdaddr) | |
3997 | hci_dev_set_flag(hdev, HCI_UNCONFIGURED); | |
3998 | ||
3999 | /* For an unconfigured controller it is required to | |
4000 | * read at least the version information provided by | |
4001 | * the Read Local Version Information command. | |
4002 | * | |
4003 | * If the set_bdaddr driver callback is provided, then | |
4004 | * also the original Bluetooth public device address | |
4005 | * will be read using the Read BD Address command. | |
4006 | */ | |
4007 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) | |
4008 | ret = hci_unconf_init_sync(hdev); | |
4009 | } | |
4010 | ||
4011 | if (hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
4012 | /* If public address change is configured, ensure that | |
4013 | * the address gets programmed. If the driver does not | |
4014 | * support changing the public address, fail the power | |
4015 | * on procedure. | |
4016 | */ | |
4017 | if (bacmp(&hdev->public_addr, BDADDR_ANY) && | |
4018 | hdev->set_bdaddr) | |
4019 | ret = hdev->set_bdaddr(hdev, &hdev->public_addr); | |
4020 | else | |
4021 | ret = -EADDRNOTAVAIL; | |
4022 | } | |
4023 | ||
4024 | if (!ret) { | |
4025 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
4026 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
4027 | ret = hci_init_sync(hdev); | |
4028 | if (!ret && hdev->post_init) | |
4029 | ret = hdev->post_init(hdev); | |
4030 | } | |
4031 | } | |
4032 | ||
4033 | /* If the HCI Reset command is clearing all diagnostic settings, | |
4034 | * then they need to be reprogrammed after the init procedure | |
4035 | * completed. | |
4036 | */ | |
4037 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && | |
4038 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
4039 | hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) && hdev->set_diag) | |
4040 | ret = hdev->set_diag(hdev, true); | |
4041 | ||
385315de JM |
4042 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
4043 | msft_do_open(hdev); | |
4044 | aosp_do_open(hdev); | |
4045 | } | |
d0b13706 LAD |
4046 | |
4047 | clear_bit(HCI_INIT, &hdev->flags); | |
4048 | ||
4049 | if (!ret) { | |
4050 | hci_dev_hold(hdev); | |
4051 | hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); | |
4052 | hci_adv_instances_set_rpa_expired(hdev, true); | |
4053 | set_bit(HCI_UP, &hdev->flags); | |
4054 | hci_sock_dev_event(hdev, HCI_DEV_UP); | |
4055 | hci_leds_update_powered(hdev, true); | |
4056 | if (!hci_dev_test_flag(hdev, HCI_SETUP) && | |
4057 | !hci_dev_test_flag(hdev, HCI_CONFIG) && | |
4058 | !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
4059 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
4060 | hci_dev_test_flag(hdev, HCI_MGMT) && | |
4061 | hdev->dev_type == HCI_PRIMARY) { | |
4062 | ret = hci_powered_update_sync(hdev); | |
4063 | } | |
4064 | } else { | |
4065 | /* Init failed, cleanup */ | |
4066 | flush_work(&hdev->tx_work); | |
4067 | ||
4068 | /* Since hci_rx_work() is possible to awake new cmd_work | |
4069 | * it should be flushed first to avoid unexpected call of | |
4070 | * hci_cmd_work() | |
4071 | */ | |
4072 | flush_work(&hdev->rx_work); | |
4073 | flush_work(&hdev->cmd_work); | |
4074 | ||
4075 | skb_queue_purge(&hdev->cmd_q); | |
4076 | skb_queue_purge(&hdev->rx_q); | |
4077 | ||
4078 | if (hdev->flush) | |
4079 | hdev->flush(hdev); | |
4080 | ||
4081 | if (hdev->sent_cmd) { | |
4082 | kfree_skb(hdev->sent_cmd); | |
4083 | hdev->sent_cmd = NULL; | |
4084 | } | |
4085 | ||
4086 | clear_bit(HCI_RUNNING, &hdev->flags); | |
4087 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); | |
4088 | ||
4089 | hdev->close(hdev); | |
4090 | hdev->flags &= BIT(HCI_RAW); | |
4091 | } | |
4092 | ||
4093 | done: | |
4094 | return ret; | |
4095 | } | |
4096 | ||
4097 | /* This function requires the caller holds hdev->lock */ | |
4098 | static void hci_pend_le_actions_clear(struct hci_dev *hdev) | |
4099 | { | |
4100 | struct hci_conn_params *p; | |
4101 | ||
4102 | list_for_each_entry(p, &hdev->le_conn_params, list) { | |
4103 | if (p->conn) { | |
4104 | hci_conn_drop(p->conn); | |
4105 | hci_conn_put(p->conn); | |
4106 | p->conn = NULL; | |
4107 | } | |
4108 | list_del_init(&p->action); | |
4109 | } | |
4110 | ||
4111 | BT_DBG("All LE pending actions cleared"); | |
4112 | } | |
4113 | ||
4114 | int hci_dev_close_sync(struct hci_dev *hdev) | |
4115 | { | |
4116 | bool auto_off; | |
4117 | int err = 0; | |
4118 | ||
4119 | bt_dev_dbg(hdev, ""); | |
4120 | ||
4121 | cancel_delayed_work(&hdev->power_off); | |
4122 | cancel_delayed_work(&hdev->ncmd_timer); | |
4123 | ||
4124 | hci_request_cancel_all(hdev); | |
4125 | ||
4126 | if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) && | |
4127 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
4128 | test_bit(HCI_UP, &hdev->flags)) { | |
4129 | /* Execute vendor specific shutdown routine */ | |
4130 | if (hdev->shutdown) | |
4131 | err = hdev->shutdown(hdev); | |
4132 | } | |
4133 | ||
4134 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
4135 | cancel_delayed_work_sync(&hdev->cmd_timer); | |
4136 | return err; | |
4137 | } | |
4138 | ||
4139 | hci_leds_update_powered(hdev, false); | |
4140 | ||
4141 | /* Flush RX and TX works */ | |
4142 | flush_work(&hdev->tx_work); | |
4143 | flush_work(&hdev->rx_work); | |
4144 | ||
4145 | if (hdev->discov_timeout > 0) { | |
4146 | hdev->discov_timeout = 0; | |
4147 | hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); | |
4148 | hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); | |
4149 | } | |
4150 | ||
4151 | if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) | |
4152 | cancel_delayed_work(&hdev->service_cache); | |
4153 | ||
4154 | if (hci_dev_test_flag(hdev, HCI_MGMT)) { | |
4155 | struct adv_info *adv_instance; | |
4156 | ||
4157 | cancel_delayed_work_sync(&hdev->rpa_expired); | |
4158 | ||
4159 | list_for_each_entry(adv_instance, &hdev->adv_instances, list) | |
4160 | cancel_delayed_work_sync(&adv_instance->rpa_expired_cb); | |
4161 | } | |
4162 | ||
4163 | /* Avoid potential lockdep warnings from the *_flush() calls by | |
4164 | * ensuring the workqueue is empty up front. | |
4165 | */ | |
4166 | drain_workqueue(hdev->workqueue); | |
4167 | ||
4168 | hci_dev_lock(hdev); | |
4169 | ||
4170 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
4171 | ||
4172 | auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF); | |
4173 | ||
4174 | if (!auto_off && hdev->dev_type == HCI_PRIMARY && | |
4175 | !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) && | |
4176 | hci_dev_test_flag(hdev, HCI_MGMT)) | |
4177 | __mgmt_power_off(hdev); | |
4178 | ||
4179 | hci_inquiry_cache_flush(hdev); | |
4180 | hci_pend_le_actions_clear(hdev); | |
4181 | hci_conn_hash_flush(hdev); | |
fa78d2d1 | 4182 | /* Prevent data races on hdev->smp_data or hdev->smp_bredr_data */ |
d0b13706 | 4183 | smp_unregister(hdev); |
fa78d2d1 | 4184 | hci_dev_unlock(hdev); |
d0b13706 LAD |
4185 | |
4186 | hci_sock_dev_event(hdev, HCI_DEV_DOWN); | |
4187 | ||
385315de JM |
4188 | if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { |
4189 | aosp_do_close(hdev); | |
4190 | msft_do_close(hdev); | |
4191 | } | |
d0b13706 LAD |
4192 | |
4193 | if (hdev->flush) | |
4194 | hdev->flush(hdev); | |
4195 | ||
4196 | /* Reset device */ | |
4197 | skb_queue_purge(&hdev->cmd_q); | |
4198 | atomic_set(&hdev->cmd_cnt, 1); | |
4199 | if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) && | |
4200 | !auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { | |
4201 | set_bit(HCI_INIT, &hdev->flags); | |
4202 | hci_reset_sync(hdev); | |
4203 | clear_bit(HCI_INIT, &hdev->flags); | |
4204 | } | |
4205 | ||
4206 | /* flush cmd work */ | |
4207 | flush_work(&hdev->cmd_work); | |
4208 | ||
4209 | /* Drop queues */ | |
4210 | skb_queue_purge(&hdev->rx_q); | |
4211 | skb_queue_purge(&hdev->cmd_q); | |
4212 | skb_queue_purge(&hdev->raw_q); | |
4213 | ||
4214 | /* Drop last sent command */ | |
4215 | if (hdev->sent_cmd) { | |
4216 | cancel_delayed_work_sync(&hdev->cmd_timer); | |
4217 | kfree_skb(hdev->sent_cmd); | |
4218 | hdev->sent_cmd = NULL; | |
4219 | } | |
4220 | ||
4221 | clear_bit(HCI_RUNNING, &hdev->flags); | |
4222 | hci_sock_dev_event(hdev, HCI_DEV_CLOSE); | |
4223 | ||
d0b13706 LAD |
4224 | /* After this point our queues are empty and no tasks are scheduled. */ |
4225 | hdev->close(hdev); | |
4226 | ||
4227 | /* Clear flags */ | |
4228 | hdev->flags &= BIT(HCI_RAW); | |
4229 | hci_dev_clear_volatile_flags(hdev); | |
4230 | ||
4231 | /* Controller radio is available but is currently powered down */ | |
4232 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; | |
4233 | ||
4234 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
4235 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); | |
4236 | bacpy(&hdev->random_addr, BDADDR_ANY); | |
4237 | ||
4238 | hci_dev_put(hdev); | |
4239 | return err; | |
4240 | } | |
4241 | ||
4242 | /* This function perform power on HCI command sequence as follows: | |
4243 | * | |
4244 | * If controller is already up (HCI_UP) performs hci_powered_update_sync | |
4245 | * sequence otherwise run hci_dev_open_sync which will follow with | |
4246 | * hci_powered_update_sync after the init sequence is completed. | |
4247 | */ | |
4248 | static int hci_power_on_sync(struct hci_dev *hdev) | |
4249 | { | |
4250 | int err; | |
4251 | ||
4252 | if (test_bit(HCI_UP, &hdev->flags) && | |
4253 | hci_dev_test_flag(hdev, HCI_MGMT) && | |
4254 | hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) { | |
4255 | cancel_delayed_work(&hdev->power_off); | |
4256 | return hci_powered_update_sync(hdev); | |
4257 | } | |
4258 | ||
4259 | err = hci_dev_open_sync(hdev); | |
4260 | if (err < 0) | |
4261 | return err; | |
4262 | ||
4263 | /* During the HCI setup phase, a few error conditions are | |
4264 | * ignored and they need to be checked now. If they are still | |
4265 | * valid, it is important to return the device back off. | |
4266 | */ | |
4267 | if (hci_dev_test_flag(hdev, HCI_RFKILLED) || | |
4268 | hci_dev_test_flag(hdev, HCI_UNCONFIGURED) || | |
4269 | (hdev->dev_type == HCI_PRIMARY && | |
4270 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
4271 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
4272 | hci_dev_clear_flag(hdev, HCI_AUTO_OFF); | |
4273 | hci_dev_close_sync(hdev); | |
4274 | } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) { | |
4275 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, | |
4276 | HCI_AUTO_OFF_TIMEOUT); | |
4277 | } | |
4278 | ||
4279 | if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) { | |
4280 | /* For unconfigured devices, set the HCI_RAW flag | |
4281 | * so that userspace can easily identify them. | |
4282 | */ | |
4283 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) | |
4284 | set_bit(HCI_RAW, &hdev->flags); | |
4285 | ||
4286 | /* For fully configured devices, this will send | |
4287 | * the Index Added event. For unconfigured devices, | |
4288 | * it will send Unconfigued Index Added event. | |
4289 | * | |
4290 | * Devices with HCI_QUIRK_RAW_DEVICE are ignored | |
4291 | * and no event will be send. | |
4292 | */ | |
4293 | mgmt_index_added(hdev); | |
4294 | } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) { | |
4295 | /* When the controller is now configured, then it | |
4296 | * is important to clear the HCI_RAW flag. | |
4297 | */ | |
4298 | if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) | |
4299 | clear_bit(HCI_RAW, &hdev->flags); | |
4300 | ||
4301 | /* Powering on the controller with HCI_CONFIG set only | |
4302 | * happens with the transition from unconfigured to | |
4303 | * configured. This will send the Index Added event. | |
4304 | */ | |
4305 | mgmt_index_added(hdev); | |
4306 | } | |
4307 | ||
4308 | return 0; | |
4309 | } | |
4310 | ||
4311 | static int hci_remote_name_cancel_sync(struct hci_dev *hdev, bdaddr_t *addr) | |
4312 | { | |
4313 | struct hci_cp_remote_name_req_cancel cp; | |
4314 | ||
4315 | memset(&cp, 0, sizeof(cp)); | |
4316 | bacpy(&cp.bdaddr, addr); | |
4317 | ||
4318 | return __hci_cmd_sync_status(hdev, HCI_OP_REMOTE_NAME_REQ_CANCEL, | |
4319 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
4320 | } | |
4321 | ||
4322 | int hci_stop_discovery_sync(struct hci_dev *hdev) | |
4323 | { | |
4324 | struct discovery_state *d = &hdev->discovery; | |
4325 | struct inquiry_entry *e; | |
4326 | int err; | |
4327 | ||
4328 | bt_dev_dbg(hdev, "state %u", hdev->discovery.state); | |
4329 | ||
4330 | if (d->state == DISCOVERY_FINDING || d->state == DISCOVERY_STOPPING) { | |
4331 | if (test_bit(HCI_INQUIRY, &hdev->flags)) { | |
4332 | err = __hci_cmd_sync_status(hdev, HCI_OP_INQUIRY_CANCEL, | |
4333 | 0, NULL, HCI_CMD_TIMEOUT); | |
4334 | if (err) | |
4335 | return err; | |
4336 | } | |
4337 | ||
4338 | if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) { | |
4339 | cancel_delayed_work(&hdev->le_scan_disable); | |
4340 | cancel_delayed_work(&hdev->le_scan_restart); | |
4341 | ||
4342 | err = hci_scan_disable_sync(hdev); | |
4343 | if (err) | |
4344 | return err; | |
4345 | } | |
4346 | ||
4347 | } else { | |
4348 | err = hci_scan_disable_sync(hdev); | |
4349 | if (err) | |
4350 | return err; | |
4351 | } | |
4352 | ||
4353 | /* Resume advertising if it was paused */ | |
4354 | if (use_ll_privacy(hdev)) | |
4355 | hci_resume_advertising_sync(hdev); | |
4356 | ||
4357 | /* No further actions needed for LE-only discovery */ | |
4358 | if (d->type == DISCOV_TYPE_LE) | |
4359 | return 0; | |
4360 | ||
4361 | if (d->state == DISCOVERY_RESOLVING || d->state == DISCOVERY_STOPPING) { | |
4362 | e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, | |
4363 | NAME_PENDING); | |
4364 | if (!e) | |
4365 | return 0; | |
4366 | ||
4367 | return hci_remote_name_cancel_sync(hdev, &e->data.bdaddr); | |
4368 | } | |
4369 | ||
4370 | return 0; | |
4371 | } | |
4372 | ||
4373 | static int hci_disconnect_phy_link_sync(struct hci_dev *hdev, u16 handle, | |
4374 | u8 reason) | |
4375 | { | |
4376 | struct hci_cp_disconn_phy_link cp; | |
4377 | ||
4378 | memset(&cp, 0, sizeof(cp)); | |
4379 | cp.phy_handle = HCI_PHY_HANDLE(handle); | |
4380 | cp.reason = reason; | |
4381 | ||
4382 | return __hci_cmd_sync_status(hdev, HCI_OP_DISCONN_PHY_LINK, | |
4383 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
4384 | } | |
4385 | ||
4386 | static int hci_disconnect_sync(struct hci_dev *hdev, struct hci_conn *conn, | |
4387 | u8 reason) | |
4388 | { | |
4389 | struct hci_cp_disconnect cp; | |
4390 | ||
4391 | if (conn->type == AMP_LINK) | |
4392 | return hci_disconnect_phy_link_sync(hdev, conn->handle, reason); | |
4393 | ||
4394 | memset(&cp, 0, sizeof(cp)); | |
4395 | cp.handle = cpu_to_le16(conn->handle); | |
4396 | cp.reason = reason; | |
4397 | ||
4398 | /* Wait for HCI_EV_DISCONN_COMPLETE not HCI_EV_CMD_STATUS when not | |
4399 | * suspending. | |
4400 | */ | |
4401 | if (!hdev->suspended) | |
4402 | return __hci_cmd_sync_status_sk(hdev, HCI_OP_DISCONNECT, | |
4403 | sizeof(cp), &cp, | |
4404 | HCI_EV_DISCONN_COMPLETE, | |
4405 | HCI_CMD_TIMEOUT, NULL); | |
4406 | ||
4407 | return __hci_cmd_sync_status(hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp, | |
4408 | HCI_CMD_TIMEOUT); | |
4409 | } | |
4410 | ||
4411 | static int hci_le_connect_cancel_sync(struct hci_dev *hdev, | |
4412 | struct hci_conn *conn) | |
4413 | { | |
4414 | if (test_bit(HCI_CONN_SCANNING, &conn->flags)) | |
4415 | return 0; | |
4416 | ||
4417 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_CREATE_CONN_CANCEL, | |
4418 | 6, &conn->dst, HCI_CMD_TIMEOUT); | |
4419 | } | |
4420 | ||
4421 | static int hci_connect_cancel_sync(struct hci_dev *hdev, struct hci_conn *conn) | |
4422 | { | |
4423 | if (conn->type == LE_LINK) | |
4424 | return hci_le_connect_cancel_sync(hdev, conn); | |
4425 | ||
4426 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
4427 | return 0; | |
4428 | ||
4429 | return __hci_cmd_sync_status(hdev, HCI_OP_CREATE_CONN_CANCEL, | |
4430 | 6, &conn->dst, HCI_CMD_TIMEOUT); | |
4431 | } | |
4432 | ||
4433 | static int hci_reject_sco_sync(struct hci_dev *hdev, struct hci_conn *conn, | |
4434 | u8 reason) | |
4435 | { | |
4436 | struct hci_cp_reject_sync_conn_req cp; | |
4437 | ||
4438 | memset(&cp, 0, sizeof(cp)); | |
4439 | bacpy(&cp.bdaddr, &conn->dst); | |
4440 | cp.reason = reason; | |
4441 | ||
4442 | /* SCO rejection has its own limited set of | |
4443 | * allowed error values (0x0D-0x0F). | |
4444 | */ | |
4445 | if (reason < 0x0d || reason > 0x0f) | |
4446 | cp.reason = HCI_ERROR_REJ_LIMITED_RESOURCES; | |
4447 | ||
4448 | return __hci_cmd_sync_status(hdev, HCI_OP_REJECT_SYNC_CONN_REQ, | |
4449 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
4450 | } | |
4451 | ||
4452 | static int hci_reject_conn_sync(struct hci_dev *hdev, struct hci_conn *conn, | |
4453 | u8 reason) | |
4454 | { | |
4455 | struct hci_cp_reject_conn_req cp; | |
4456 | ||
4457 | if (conn->type == SCO_LINK || conn->type == ESCO_LINK) | |
4458 | return hci_reject_sco_sync(hdev, conn, reason); | |
4459 | ||
4460 | memset(&cp, 0, sizeof(cp)); | |
4461 | bacpy(&cp.bdaddr, &conn->dst); | |
4462 | cp.reason = reason; | |
4463 | ||
4464 | return __hci_cmd_sync_status(hdev, HCI_OP_REJECT_CONN_REQ, | |
4465 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
4466 | } | |
4467 | ||
4468 | static int hci_abort_conn_sync(struct hci_dev *hdev, struct hci_conn *conn, | |
4469 | u8 reason) | |
4470 | { | |
9b3628d7 LAD |
4471 | int err; |
4472 | ||
d0b13706 LAD |
4473 | switch (conn->state) { |
4474 | case BT_CONNECTED: | |
4475 | case BT_CONFIG: | |
4476 | return hci_disconnect_sync(hdev, conn, reason); | |
4477 | case BT_CONNECT: | |
9b3628d7 LAD |
4478 | err = hci_connect_cancel_sync(hdev, conn); |
4479 | /* Cleanup hci_conn object if it cannot be cancelled as it | |
4480 | * likelly means the controller and host stack are out of sync. | |
4481 | */ | |
4482 | if (err) | |
4483 | hci_conn_failed(conn, err); | |
4484 | ||
4485 | return err; | |
d0b13706 LAD |
4486 | case BT_CONNECT2: |
4487 | return hci_reject_conn_sync(hdev, conn, reason); | |
4488 | default: | |
4489 | conn->state = BT_CLOSED; | |
4490 | break; | |
4491 | } | |
4492 | ||
4493 | return 0; | |
4494 | } | |
4495 | ||
182ee45d LAD |
4496 | static int hci_disconnect_all_sync(struct hci_dev *hdev, u8 reason) |
4497 | { | |
4498 | struct hci_conn *conn, *tmp; | |
4499 | int err; | |
4500 | ||
4501 | list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { | |
4502 | err = hci_abort_conn_sync(hdev, conn, reason); | |
4503 | if (err) | |
4504 | return err; | |
4505 | } | |
4506 | ||
8cd3c55c | 4507 | return 0; |
182ee45d LAD |
4508 | } |
4509 | ||
d0b13706 LAD |
4510 | /* This function perform power off HCI command sequence as follows: |
4511 | * | |
4512 | * Clear Advertising | |
4513 | * Stop Discovery | |
4514 | * Disconnect all connections | |
4515 | * hci_dev_close_sync | |
4516 | */ | |
4517 | static int hci_power_off_sync(struct hci_dev *hdev) | |
4518 | { | |
d0b13706 LAD |
4519 | int err; |
4520 | ||
4521 | /* If controller is already down there is nothing to do */ | |
4522 | if (!test_bit(HCI_UP, &hdev->flags)) | |
4523 | return 0; | |
4524 | ||
4525 | if (test_bit(HCI_ISCAN, &hdev->flags) || | |
4526 | test_bit(HCI_PSCAN, &hdev->flags)) { | |
4527 | err = hci_write_scan_enable_sync(hdev, 0x00); | |
4528 | if (err) | |
4529 | return err; | |
4530 | } | |
4531 | ||
4532 | err = hci_clear_adv_sync(hdev, NULL, false); | |
4533 | if (err) | |
4534 | return err; | |
4535 | ||
4536 | err = hci_stop_discovery_sync(hdev); | |
4537 | if (err) | |
4538 | return err; | |
4539 | ||
182ee45d LAD |
4540 | /* Terminated due to Power Off */ |
4541 | err = hci_disconnect_all_sync(hdev, HCI_ERROR_REMOTE_POWER_OFF); | |
4542 | if (err) | |
4543 | return err; | |
d0b13706 LAD |
4544 | |
4545 | return hci_dev_close_sync(hdev); | |
4546 | } | |
4547 | ||
4548 | int hci_set_powered_sync(struct hci_dev *hdev, u8 val) | |
4549 | { | |
4550 | if (val) | |
4551 | return hci_power_on_sync(hdev); | |
cf75ad8b LAD |
4552 | |
4553 | return hci_power_off_sync(hdev); | |
4554 | } | |
abfeea47 | 4555 | |
2bd1b237 LAD |
4556 | static int hci_write_iac_sync(struct hci_dev *hdev) |
4557 | { | |
4558 | struct hci_cp_write_current_iac_lap cp; | |
4559 | ||
4560 | if (!hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) | |
4561 | return 0; | |
4562 | ||
4563 | memset(&cp, 0, sizeof(cp)); | |
4564 | ||
4565 | if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) { | |
4566 | /* Limited discoverable mode */ | |
4567 | cp.num_iac = min_t(u8, hdev->num_iac, 2); | |
4568 | cp.iac_lap[0] = 0x00; /* LIAC */ | |
4569 | cp.iac_lap[1] = 0x8b; | |
4570 | cp.iac_lap[2] = 0x9e; | |
4571 | cp.iac_lap[3] = 0x33; /* GIAC */ | |
4572 | cp.iac_lap[4] = 0x8b; | |
4573 | cp.iac_lap[5] = 0x9e; | |
4574 | } else { | |
4575 | /* General discoverable mode */ | |
4576 | cp.num_iac = 1; | |
4577 | cp.iac_lap[0] = 0x33; /* GIAC */ | |
4578 | cp.iac_lap[1] = 0x8b; | |
4579 | cp.iac_lap[2] = 0x9e; | |
4580 | } | |
4581 | ||
4582 | return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CURRENT_IAC_LAP, | |
4583 | (cp.num_iac * 3) + 1, &cp, | |
4584 | HCI_CMD_TIMEOUT); | |
4585 | } | |
4586 | ||
4587 | int hci_update_discoverable_sync(struct hci_dev *hdev) | |
4588 | { | |
4589 | int err = 0; | |
4590 | ||
4591 | if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { | |
4592 | err = hci_write_iac_sync(hdev); | |
4593 | if (err) | |
4594 | return err; | |
4595 | ||
4596 | err = hci_update_scan_sync(hdev); | |
4597 | if (err) | |
4598 | return err; | |
4599 | ||
4600 | err = hci_update_class_sync(hdev); | |
4601 | if (err) | |
4602 | return err; | |
4603 | } | |
4604 | ||
4605 | /* Advertising instances don't use the global discoverable setting, so | |
4606 | * only update AD if advertising was enabled using Set Advertising. | |
4607 | */ | |
4608 | if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) { | |
4609 | err = hci_update_adv_data_sync(hdev, 0x00); | |
4610 | if (err) | |
4611 | return err; | |
4612 | ||
4613 | /* Discoverable mode affects the local advertising | |
4614 | * address in limited privacy mode. | |
4615 | */ | |
4616 | if (hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY)) { | |
4617 | if (ext_adv_capable(hdev)) | |
4618 | err = hci_start_ext_adv_sync(hdev, 0x00); | |
4619 | else | |
4620 | err = hci_enable_advertising_sync(hdev); | |
4621 | } | |
4622 | } | |
4623 | ||
4624 | return err; | |
4625 | } | |
4626 | ||
4627 | static int update_discoverable_sync(struct hci_dev *hdev, void *data) | |
4628 | { | |
4629 | return hci_update_discoverable_sync(hdev); | |
4630 | } | |
4631 | ||
4632 | int hci_update_discoverable(struct hci_dev *hdev) | |
4633 | { | |
4634 | /* Only queue if it would have any effect */ | |
4635 | if (hdev_is_powered(hdev) && | |
4636 | hci_dev_test_flag(hdev, HCI_ADVERTISING) && | |
4637 | hci_dev_test_flag(hdev, HCI_DISCOVERABLE) && | |
4638 | hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY)) | |
4639 | return hci_cmd_sync_queue(hdev, update_discoverable_sync, NULL, | |
4640 | NULL); | |
4641 | ||
4642 | return 0; | |
4643 | } | |
4644 | ||
f056a657 LAD |
4645 | int hci_update_connectable_sync(struct hci_dev *hdev) |
4646 | { | |
4647 | int err; | |
4648 | ||
4649 | err = hci_update_scan_sync(hdev); | |
4650 | if (err) | |
4651 | return err; | |
4652 | ||
4653 | /* If BR/EDR is not enabled and we disable advertising as a | |
4654 | * by-product of disabling connectable, we need to update the | |
4655 | * advertising flags. | |
4656 | */ | |
4657 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) | |
4658 | err = hci_update_adv_data_sync(hdev, hdev->cur_adv_instance); | |
4659 | ||
4660 | /* Update the advertising parameters if necessary */ | |
4661 | if (hci_dev_test_flag(hdev, HCI_ADVERTISING) || | |
4662 | !list_empty(&hdev->adv_instances)) { | |
4663 | if (ext_adv_capable(hdev)) | |
4664 | err = hci_start_ext_adv_sync(hdev, | |
4665 | hdev->cur_adv_instance); | |
4666 | else | |
4667 | err = hci_enable_advertising_sync(hdev); | |
4668 | ||
4669 | if (err) | |
4670 | return err; | |
4671 | } | |
4672 | ||
4673 | return hci_update_passive_scan_sync(hdev); | |
4674 | } | |
4675 | ||
abfeea47 LAD |
4676 | static int hci_inquiry_sync(struct hci_dev *hdev, u8 length) |
4677 | { | |
4678 | const u8 giac[3] = { 0x33, 0x8b, 0x9e }; | |
4679 | const u8 liac[3] = { 0x00, 0x8b, 0x9e }; | |
4680 | struct hci_cp_inquiry cp; | |
4681 | ||
4682 | bt_dev_dbg(hdev, ""); | |
4683 | ||
4684 | if (hci_dev_test_flag(hdev, HCI_INQUIRY)) | |
4685 | return 0; | |
4686 | ||
4687 | hci_dev_lock(hdev); | |
4688 | hci_inquiry_cache_flush(hdev); | |
4689 | hci_dev_unlock(hdev); | |
4690 | ||
4691 | memset(&cp, 0, sizeof(cp)); | |
4692 | ||
4693 | if (hdev->discovery.limited) | |
4694 | memcpy(&cp.lap, liac, sizeof(cp.lap)); | |
4695 | else | |
4696 | memcpy(&cp.lap, giac, sizeof(cp.lap)); | |
4697 | ||
4698 | cp.length = length; | |
4699 | ||
4700 | return __hci_cmd_sync_status(hdev, HCI_OP_INQUIRY, | |
4701 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
4702 | } | |
4703 | ||
4704 | static int hci_active_scan_sync(struct hci_dev *hdev, uint16_t interval) | |
4705 | { | |
4706 | u8 own_addr_type; | |
4707 | /* Accept list is not used for discovery */ | |
4708 | u8 filter_policy = 0x00; | |
4709 | /* Default is to enable duplicates filter */ | |
4710 | u8 filter_dup = LE_SCAN_FILTER_DUP_ENABLE; | |
4711 | int err; | |
4712 | ||
4713 | bt_dev_dbg(hdev, ""); | |
4714 | ||
4715 | /* If controller is scanning, it means the passive scanning is | |
4716 | * running. Thus, we should temporarily stop it in order to set the | |
4717 | * discovery scanning parameters. | |
4718 | */ | |
4719 | err = hci_scan_disable_sync(hdev); | |
4720 | if (err) { | |
4721 | bt_dev_err(hdev, "Unable to disable scanning: %d", err); | |
4722 | return err; | |
4723 | } | |
4724 | ||
4725 | cancel_interleave_scan(hdev); | |
4726 | ||
4727 | /* Pause advertising since active scanning disables address resolution | |
4728 | * which advertising depend on in order to generate its RPAs. | |
4729 | */ | |
4730 | if (use_ll_privacy(hdev)) { | |
4731 | err = hci_pause_advertising_sync(hdev); | |
4732 | if (err) { | |
4733 | bt_dev_err(hdev, "pause advertising failed: %d", err); | |
4734 | goto failed; | |
4735 | } | |
4736 | } | |
4737 | ||
4738 | /* Disable address resolution while doing active scanning since the | |
4739 | * accept list shall not be used and all reports shall reach the host | |
4740 | * anyway. | |
4741 | */ | |
4742 | err = hci_le_set_addr_resolution_enable_sync(hdev, 0x00); | |
4743 | if (err) { | |
4744 | bt_dev_err(hdev, "Unable to disable Address Resolution: %d", | |
4745 | err); | |
4746 | goto failed; | |
4747 | } | |
4748 | ||
4749 | /* All active scans will be done with either a resolvable private | |
4750 | * address (when privacy feature has been enabled) or non-resolvable | |
4751 | * private address. | |
4752 | */ | |
4753 | err = hci_update_random_address_sync(hdev, true, scan_use_rpa(hdev), | |
4754 | &own_addr_type); | |
4755 | if (err < 0) | |
4756 | own_addr_type = ADDR_LE_DEV_PUBLIC; | |
4757 | ||
4758 | if (hci_is_adv_monitoring(hdev)) { | |
4759 | /* Duplicate filter should be disabled when some advertisement | |
4760 | * monitor is activated, otherwise AdvMon can only receive one | |
4761 | * advertisement for one peer(*) during active scanning, and | |
4762 | * might report loss to these peers. | |
4763 | * | |
4764 | * Note that different controllers have different meanings of | |
4765 | * |duplicate|. Some of them consider packets with the same | |
4766 | * address as duplicate, and others consider packets with the | |
4767 | * same address and the same RSSI as duplicate. Although in the | |
4768 | * latter case we don't need to disable duplicate filter, but | |
4769 | * it is common to have active scanning for a short period of | |
4770 | * time, the power impact should be neglectable. | |
4771 | */ | |
4772 | filter_dup = LE_SCAN_FILTER_DUP_DISABLE; | |
4773 | } | |
4774 | ||
4775 | err = hci_start_scan_sync(hdev, LE_SCAN_ACTIVE, interval, | |
4776 | hdev->le_scan_window_discovery, | |
4777 | own_addr_type, filter_policy, filter_dup); | |
4778 | if (!err) | |
4779 | return err; | |
4780 | ||
4781 | failed: | |
4782 | /* Resume advertising if it was paused */ | |
4783 | if (use_ll_privacy(hdev)) | |
4784 | hci_resume_advertising_sync(hdev); | |
4785 | ||
4786 | /* Resume passive scanning */ | |
4787 | hci_update_passive_scan_sync(hdev); | |
4788 | return err; | |
4789 | } | |
4790 | ||
4791 | static int hci_start_interleaved_discovery_sync(struct hci_dev *hdev) | |
4792 | { | |
4793 | int err; | |
4794 | ||
4795 | bt_dev_dbg(hdev, ""); | |
4796 | ||
4797 | err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery * 2); | |
4798 | if (err) | |
4799 | return err; | |
4800 | ||
4801 | return hci_inquiry_sync(hdev, DISCOV_BREDR_INQUIRY_LEN); | |
4802 | } | |
4803 | ||
4804 | int hci_start_discovery_sync(struct hci_dev *hdev) | |
4805 | { | |
4806 | unsigned long timeout; | |
4807 | int err; | |
4808 | ||
4809 | bt_dev_dbg(hdev, "type %u", hdev->discovery.type); | |
4810 | ||
4811 | switch (hdev->discovery.type) { | |
4812 | case DISCOV_TYPE_BREDR: | |
4813 | return hci_inquiry_sync(hdev, DISCOV_BREDR_INQUIRY_LEN); | |
4814 | case DISCOV_TYPE_INTERLEAVED: | |
4815 | /* When running simultaneous discovery, the LE scanning time | |
4816 | * should occupy the whole discovery time sine BR/EDR inquiry | |
4817 | * and LE scanning are scheduled by the controller. | |
4818 | * | |
4819 | * For interleaving discovery in comparison, BR/EDR inquiry | |
4820 | * and LE scanning are done sequentially with separate | |
4821 | * timeouts. | |
4822 | */ | |
4823 | if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, | |
4824 | &hdev->quirks)) { | |
4825 | timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT); | |
4826 | /* During simultaneous discovery, we double LE scan | |
4827 | * interval. We must leave some time for the controller | |
4828 | * to do BR/EDR inquiry. | |
4829 | */ | |
4830 | err = hci_start_interleaved_discovery_sync(hdev); | |
4831 | break; | |
4832 | } | |
4833 | ||
4834 | timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout); | |
4835 | err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery); | |
4836 | break; | |
4837 | case DISCOV_TYPE_LE: | |
4838 | timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT); | |
4839 | err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery); | |
4840 | break; | |
4841 | default: | |
4842 | return -EINVAL; | |
4843 | } | |
4844 | ||
4845 | if (err) | |
4846 | return err; | |
4847 | ||
4848 | bt_dev_dbg(hdev, "timeout %u ms", jiffies_to_msecs(timeout)); | |
4849 | ||
4850 | /* When service discovery is used and the controller has a | |
4851 | * strict duplicate filter, it is important to remember the | |
4852 | * start and duration of the scan. This is required for | |
4853 | * restarting scanning during the discovery phase. | |
4854 | */ | |
4855 | if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) && | |
4856 | hdev->discovery.result_filtering) { | |
4857 | hdev->discovery.scan_start = jiffies; | |
4858 | hdev->discovery.scan_duration = timeout; | |
4859 | } | |
4860 | ||
4861 | queue_delayed_work(hdev->req_workqueue, &hdev->le_scan_disable, | |
4862 | timeout); | |
abfeea47 LAD |
4863 | return 0; |
4864 | } | |
182ee45d LAD |
4865 | |
4866 | static void hci_suspend_monitor_sync(struct hci_dev *hdev) | |
4867 | { | |
4868 | switch (hci_get_adv_monitor_offload_ext(hdev)) { | |
4869 | case HCI_ADV_MONITOR_EXT_MSFT: | |
4870 | msft_suspend_sync(hdev); | |
4871 | break; | |
4872 | default: | |
4873 | return; | |
4874 | } | |
4875 | } | |
4876 | ||
4877 | /* This function disables discovery and mark it as paused */ | |
4878 | static int hci_pause_discovery_sync(struct hci_dev *hdev) | |
4879 | { | |
4880 | int old_state = hdev->discovery.state; | |
4881 | int err; | |
4882 | ||
4883 | /* If discovery already stopped/stopping/paused there nothing to do */ | |
4884 | if (old_state == DISCOVERY_STOPPED || old_state == DISCOVERY_STOPPING || | |
4885 | hdev->discovery_paused) | |
4886 | return 0; | |
4887 | ||
4888 | hci_discovery_set_state(hdev, DISCOVERY_STOPPING); | |
4889 | err = hci_stop_discovery_sync(hdev); | |
4890 | if (err) | |
4891 | return err; | |
4892 | ||
4893 | hdev->discovery_paused = true; | |
4894 | hdev->discovery_old_state = old_state; | |
4895 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
4896 | ||
4897 | return 0; | |
4898 | } | |
4899 | ||
4900 | static int hci_update_event_filter_sync(struct hci_dev *hdev) | |
4901 | { | |
4902 | struct bdaddr_list_with_flags *b; | |
4903 | u8 scan = SCAN_DISABLED; | |
4904 | bool scanning = test_bit(HCI_PSCAN, &hdev->flags); | |
4905 | int err; | |
4906 | ||
4907 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) | |
4908 | return 0; | |
4909 | ||
0eaecfb2 IFM |
4910 | /* Some fake CSR controllers lock up after setting this type of |
4911 | * filter, so avoid sending the request altogether. | |
4912 | */ | |
4913 | if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks)) | |
4914 | return 0; | |
4915 | ||
182ee45d LAD |
4916 | /* Always clear event filter when starting */ |
4917 | hci_clear_event_filter_sync(hdev); | |
4918 | ||
4919 | list_for_each_entry(b, &hdev->accept_list, list) { | |
e1cff700 | 4920 | if (!(b->flags & HCI_CONN_FLAG_REMOTE_WAKEUP)) |
182ee45d LAD |
4921 | continue; |
4922 | ||
4923 | bt_dev_dbg(hdev, "Adding event filters for %pMR", &b->bdaddr); | |
4924 | ||
4925 | err = hci_set_event_filter_sync(hdev, HCI_FLT_CONN_SETUP, | |
4926 | HCI_CONN_SETUP_ALLOW_BDADDR, | |
4927 | &b->bdaddr, | |
4928 | HCI_CONN_SETUP_AUTO_ON); | |
4929 | if (err) | |
4930 | bt_dev_dbg(hdev, "Failed to set event filter for %pMR", | |
4931 | &b->bdaddr); | |
4932 | else | |
4933 | scan = SCAN_PAGE; | |
4934 | } | |
4935 | ||
4936 | if (scan && !scanning) | |
4937 | hci_write_scan_enable_sync(hdev, scan); | |
4938 | else if (!scan && scanning) | |
4939 | hci_write_scan_enable_sync(hdev, scan); | |
4940 | ||
4941 | return 0; | |
4942 | } | |
4943 | ||
3b420553 LAD |
4944 | /* This function disables scan (BR and LE) and mark it as paused */ |
4945 | static int hci_pause_scan_sync(struct hci_dev *hdev) | |
4946 | { | |
4947 | if (hdev->scanning_paused) | |
4948 | return 0; | |
4949 | ||
4950 | /* Disable page scan if enabled */ | |
4951 | if (test_bit(HCI_PSCAN, &hdev->flags)) | |
4952 | hci_write_scan_enable_sync(hdev, SCAN_DISABLED); | |
4953 | ||
4954 | hci_scan_disable_sync(hdev); | |
4955 | ||
4956 | hdev->scanning_paused = true; | |
4957 | ||
4958 | return 0; | |
4959 | } | |
4960 | ||
182ee45d LAD |
4961 | /* This function performs the HCI suspend procedures in the follow order: |
4962 | * | |
4963 | * Pause discovery (active scanning/inquiry) | |
4964 | * Pause Directed Advertising/Advertising | |
3b420553 | 4965 | * Pause Scanning (passive scanning in case discovery was not active) |
182ee45d LAD |
4966 | * Disconnect all connections |
4967 | * Set suspend_status to BT_SUSPEND_DISCONNECT if hdev cannot wakeup | |
4968 | * otherwise: | |
4969 | * Update event mask (only set events that are allowed to wake up the host) | |
4970 | * Update event filter (with devices marked with HCI_CONN_FLAG_REMOTE_WAKEUP) | |
4971 | * Update passive scanning (lower duty cycle) | |
4972 | * Set suspend_status to BT_SUSPEND_CONFIGURE_WAKE | |
4973 | */ | |
4974 | int hci_suspend_sync(struct hci_dev *hdev) | |
4975 | { | |
4976 | int err; | |
4977 | ||
4978 | /* If marked as suspended there nothing to do */ | |
4979 | if (hdev->suspended) | |
4980 | return 0; | |
4981 | ||
4982 | /* Mark device as suspended */ | |
4983 | hdev->suspended = true; | |
4984 | ||
4985 | /* Pause discovery if not already stopped */ | |
4986 | hci_pause_discovery_sync(hdev); | |
4987 | ||
4988 | /* Pause other advertisements */ | |
4989 | hci_pause_advertising_sync(hdev); | |
4990 | ||
182ee45d LAD |
4991 | /* Suspend monitor filters */ |
4992 | hci_suspend_monitor_sync(hdev); | |
4993 | ||
4994 | /* Prevent disconnects from causing scanning to be re-enabled */ | |
3b420553 | 4995 | hci_pause_scan_sync(hdev); |
182ee45d LAD |
4996 | |
4997 | /* Soft disconnect everything (power off) */ | |
4998 | err = hci_disconnect_all_sync(hdev, HCI_ERROR_REMOTE_POWER_OFF); | |
4999 | if (err) { | |
5000 | /* Set state to BT_RUNNING so resume doesn't notify */ | |
5001 | hdev->suspend_state = BT_RUNNING; | |
5002 | hci_resume_sync(hdev); | |
5003 | return err; | |
5004 | } | |
5005 | ||
5006 | /* Only configure accept list if disconnect succeeded and wake | |
5007 | * isn't being prevented. | |
5008 | */ | |
5009 | if (!hdev->wakeup || !hdev->wakeup(hdev)) { | |
5010 | hdev->suspend_state = BT_SUSPEND_DISCONNECT; | |
5011 | return 0; | |
5012 | } | |
5013 | ||
5014 | /* Unpause to take care of updating scanning params */ | |
5015 | hdev->scanning_paused = false; | |
5016 | ||
5017 | /* Update event mask so only the allowed event can wakeup the host */ | |
5018 | hci_set_event_mask_sync(hdev); | |
5019 | ||
5020 | /* Enable event filter for paired devices */ | |
5021 | hci_update_event_filter_sync(hdev); | |
5022 | ||
5023 | /* Update LE passive scan if enabled */ | |
5024 | hci_update_passive_scan_sync(hdev); | |
5025 | ||
5026 | /* Pause scan changes again. */ | |
5027 | hdev->scanning_paused = true; | |
5028 | ||
5029 | hdev->suspend_state = BT_SUSPEND_CONFIGURE_WAKE; | |
5030 | ||
5031 | return 0; | |
5032 | } | |
5033 | ||
5034 | /* This function resumes discovery */ | |
5035 | static int hci_resume_discovery_sync(struct hci_dev *hdev) | |
5036 | { | |
5037 | int err; | |
5038 | ||
5039 | /* If discovery not paused there nothing to do */ | |
5040 | if (!hdev->discovery_paused) | |
5041 | return 0; | |
5042 | ||
5043 | hdev->discovery_paused = false; | |
5044 | ||
5045 | hci_discovery_set_state(hdev, DISCOVERY_STARTING); | |
5046 | ||
5047 | err = hci_start_discovery_sync(hdev); | |
5048 | ||
5049 | hci_discovery_set_state(hdev, err ? DISCOVERY_STOPPED : | |
5050 | DISCOVERY_FINDING); | |
5051 | ||
5052 | return err; | |
5053 | } | |
5054 | ||
5055 | static void hci_resume_monitor_sync(struct hci_dev *hdev) | |
5056 | { | |
5057 | switch (hci_get_adv_monitor_offload_ext(hdev)) { | |
5058 | case HCI_ADV_MONITOR_EXT_MSFT: | |
5059 | msft_resume_sync(hdev); | |
5060 | break; | |
5061 | default: | |
5062 | return; | |
5063 | } | |
5064 | } | |
5065 | ||
3b420553 LAD |
5066 | /* This function resume scan and reset paused flag */ |
5067 | static int hci_resume_scan_sync(struct hci_dev *hdev) | |
5068 | { | |
5069 | if (!hdev->scanning_paused) | |
5070 | return 0; | |
5071 | ||
68253f3c ZJ |
5072 | hdev->scanning_paused = false; |
5073 | ||
3b420553 LAD |
5074 | hci_update_scan_sync(hdev); |
5075 | ||
5076 | /* Reset passive scanning to normal */ | |
5077 | hci_update_passive_scan_sync(hdev); | |
5078 | ||
3b420553 LAD |
5079 | return 0; |
5080 | } | |
5081 | ||
182ee45d LAD |
5082 | /* This function performs the HCI suspend procedures in the follow order: |
5083 | * | |
5084 | * Restore event mask | |
5085 | * Clear event filter | |
5086 | * Update passive scanning (normal duty cycle) | |
5087 | * Resume Directed Advertising/Advertising | |
5088 | * Resume discovery (active scanning/inquiry) | |
5089 | */ | |
5090 | int hci_resume_sync(struct hci_dev *hdev) | |
5091 | { | |
5092 | /* If not marked as suspended there nothing to do */ | |
5093 | if (!hdev->suspended) | |
5094 | return 0; | |
5095 | ||
5096 | hdev->suspended = false; | |
182ee45d LAD |
5097 | |
5098 | /* Restore event mask */ | |
5099 | hci_set_event_mask_sync(hdev); | |
5100 | ||
5101 | /* Clear any event filters and restore scan state */ | |
5102 | hci_clear_event_filter_sync(hdev); | |
182ee45d | 5103 | |
3b420553 LAD |
5104 | /* Resume scanning */ |
5105 | hci_resume_scan_sync(hdev); | |
182ee45d LAD |
5106 | |
5107 | /* Resume monitor filters */ | |
5108 | hci_resume_monitor_sync(hdev); | |
5109 | ||
5110 | /* Resume other advertisements */ | |
5111 | hci_resume_advertising_sync(hdev); | |
5112 | ||
5113 | /* Resume discovery */ | |
5114 | hci_resume_discovery_sync(hdev); | |
5115 | ||
5116 | return 0; | |
5117 | } | |
8e8b92ee LAD |
5118 | |
5119 | static bool conn_use_rpa(struct hci_conn *conn) | |
5120 | { | |
5121 | struct hci_dev *hdev = conn->hdev; | |
5122 | ||
5123 | return hci_dev_test_flag(hdev, HCI_PRIVACY); | |
5124 | } | |
5125 | ||
5126 | static int hci_le_ext_directed_advertising_sync(struct hci_dev *hdev, | |
5127 | struct hci_conn *conn) | |
5128 | { | |
5129 | struct hci_cp_le_set_ext_adv_params cp; | |
5130 | int err; | |
5131 | bdaddr_t random_addr; | |
5132 | u8 own_addr_type; | |
5133 | ||
5134 | err = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn), | |
5135 | &own_addr_type); | |
5136 | if (err) | |
5137 | return err; | |
5138 | ||
5139 | /* Set require_privacy to false so that the remote device has a | |
5140 | * chance of identifying us. | |
5141 | */ | |
5142 | err = hci_get_random_address(hdev, false, conn_use_rpa(conn), NULL, | |
5143 | &own_addr_type, &random_addr); | |
5144 | if (err) | |
5145 | return err; | |
5146 | ||
5147 | memset(&cp, 0, sizeof(cp)); | |
5148 | ||
5149 | cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_DIRECT_IND); | |
5150 | cp.own_addr_type = own_addr_type; | |
5151 | cp.channel_map = hdev->le_adv_channel_map; | |
5152 | cp.tx_power = HCI_TX_POWER_INVALID; | |
5153 | cp.primary_phy = HCI_ADV_PHY_1M; | |
5154 | cp.secondary_phy = HCI_ADV_PHY_1M; | |
5155 | cp.handle = 0x00; /* Use instance 0 for directed adv */ | |
5156 | cp.own_addr_type = own_addr_type; | |
5157 | cp.peer_addr_type = conn->dst_type; | |
5158 | bacpy(&cp.peer_addr, &conn->dst); | |
5159 | ||
5160 | /* As per Core Spec 5.2 Vol 2, PART E, Sec 7.8.53, for | |
5161 | * advertising_event_property LE_LEGACY_ADV_DIRECT_IND | |
5162 | * does not supports advertising data when the advertising set already | |
5163 | * contains some, the controller shall return erroc code 'Invalid | |
5164 | * HCI Command Parameters(0x12). | |
5165 | * So it is required to remove adv set for handle 0x00. since we use | |
5166 | * instance 0 for directed adv. | |
5167 | */ | |
5168 | err = hci_remove_ext_adv_instance_sync(hdev, cp.handle, NULL); | |
5169 | if (err) | |
5170 | return err; | |
5171 | ||
5172 | err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS, | |
5173 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
5174 | if (err) | |
5175 | return err; | |
5176 | ||
5177 | /* Check if random address need to be updated */ | |
5178 | if (own_addr_type == ADDR_LE_DEV_RANDOM && | |
5179 | bacmp(&random_addr, BDADDR_ANY) && | |
5180 | bacmp(&random_addr, &hdev->random_addr)) { | |
5181 | err = hci_set_adv_set_random_addr_sync(hdev, 0x00, | |
5182 | &random_addr); | |
5183 | if (err) | |
5184 | return err; | |
5185 | } | |
5186 | ||
5187 | return hci_enable_ext_advertising_sync(hdev, 0x00); | |
5188 | } | |
5189 | ||
5190 | static int hci_le_directed_advertising_sync(struct hci_dev *hdev, | |
5191 | struct hci_conn *conn) | |
5192 | { | |
5193 | struct hci_cp_le_set_adv_param cp; | |
5194 | u8 status; | |
5195 | u8 own_addr_type; | |
5196 | u8 enable; | |
5197 | ||
5198 | if (ext_adv_capable(hdev)) | |
5199 | return hci_le_ext_directed_advertising_sync(hdev, conn); | |
5200 | ||
5201 | /* Clear the HCI_LE_ADV bit temporarily so that the | |
5202 | * hci_update_random_address knows that it's safe to go ahead | |
5203 | * and write a new random address. The flag will be set back on | |
5204 | * as soon as the SET_ADV_ENABLE HCI command completes. | |
5205 | */ | |
5206 | hci_dev_clear_flag(hdev, HCI_LE_ADV); | |
5207 | ||
5208 | /* Set require_privacy to false so that the remote device has a | |
5209 | * chance of identifying us. | |
5210 | */ | |
5211 | status = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn), | |
5212 | &own_addr_type); | |
5213 | if (status) | |
5214 | return status; | |
5215 | ||
5216 | memset(&cp, 0, sizeof(cp)); | |
5217 | ||
5218 | /* Some controllers might reject command if intervals are not | |
5219 | * within range for undirected advertising. | |
5220 | * BCM20702A0 is known to be affected by this. | |
5221 | */ | |
5222 | cp.min_interval = cpu_to_le16(0x0020); | |
5223 | cp.max_interval = cpu_to_le16(0x0020); | |
5224 | ||
5225 | cp.type = LE_ADV_DIRECT_IND; | |
5226 | cp.own_address_type = own_addr_type; | |
5227 | cp.direct_addr_type = conn->dst_type; | |
5228 | bacpy(&cp.direct_addr, &conn->dst); | |
5229 | cp.channel_map = hdev->le_adv_channel_map; | |
5230 | ||
5231 | status = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_PARAM, | |
5232 | sizeof(cp), &cp, HCI_CMD_TIMEOUT); | |
5233 | if (status) | |
5234 | return status; | |
5235 | ||
5236 | enable = 0x01; | |
5237 | ||
5238 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE, | |
5239 | sizeof(enable), &enable, HCI_CMD_TIMEOUT); | |
5240 | } | |
5241 | ||
5242 | static void set_ext_conn_params(struct hci_conn *conn, | |
5243 | struct hci_cp_le_ext_conn_param *p) | |
5244 | { | |
5245 | struct hci_dev *hdev = conn->hdev; | |
5246 | ||
5247 | memset(p, 0, sizeof(*p)); | |
5248 | ||
5249 | p->scan_interval = cpu_to_le16(hdev->le_scan_int_connect); | |
5250 | p->scan_window = cpu_to_le16(hdev->le_scan_window_connect); | |
5251 | p->conn_interval_min = cpu_to_le16(conn->le_conn_min_interval); | |
5252 | p->conn_interval_max = cpu_to_le16(conn->le_conn_max_interval); | |
5253 | p->conn_latency = cpu_to_le16(conn->le_conn_latency); | |
5254 | p->supervision_timeout = cpu_to_le16(conn->le_supv_timeout); | |
5255 | p->min_ce_len = cpu_to_le16(0x0000); | |
5256 | p->max_ce_len = cpu_to_le16(0x0000); | |
5257 | } | |
5258 | ||
89a0b8b9 LAD |
5259 | static int hci_le_ext_create_conn_sync(struct hci_dev *hdev, |
5260 | struct hci_conn *conn, u8 own_addr_type) | |
8e8b92ee LAD |
5261 | { |
5262 | struct hci_cp_le_ext_create_conn *cp; | |
5263 | struct hci_cp_le_ext_conn_param *p; | |
5264 | u8 data[sizeof(*cp) + sizeof(*p) * 3]; | |
5265 | u32 plen; | |
5266 | ||
5267 | cp = (void *)data; | |
5268 | p = (void *)cp->data; | |
5269 | ||
5270 | memset(cp, 0, sizeof(*cp)); | |
5271 | ||
5272 | bacpy(&cp->peer_addr, &conn->dst); | |
5273 | cp->peer_addr_type = conn->dst_type; | |
5274 | cp->own_addr_type = own_addr_type; | |
5275 | ||
5276 | plen = sizeof(*cp); | |
5277 | ||
5278 | if (scan_1m(hdev)) { | |
5279 | cp->phys |= LE_SCAN_PHY_1M; | |
5280 | set_ext_conn_params(conn, p); | |
5281 | ||
5282 | p++; | |
5283 | plen += sizeof(*p); | |
5284 | } | |
5285 | ||
5286 | if (scan_2m(hdev)) { | |
5287 | cp->phys |= LE_SCAN_PHY_2M; | |
5288 | set_ext_conn_params(conn, p); | |
5289 | ||
5290 | p++; | |
5291 | plen += sizeof(*p); | |
5292 | } | |
5293 | ||
5294 | if (scan_coded(hdev)) { | |
5295 | cp->phys |= LE_SCAN_PHY_CODED; | |
5296 | set_ext_conn_params(conn, p); | |
5297 | ||
5298 | plen += sizeof(*p); | |
5299 | } | |
5300 | ||
6cd29ec6 LAD |
5301 | return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_EXT_CREATE_CONN, |
5302 | plen, data, | |
5303 | HCI_EV_LE_ENHANCED_CONN_COMPLETE, | |
a56a1138 | 5304 | conn->conn_timeout, NULL); |
8e8b92ee LAD |
5305 | } |
5306 | ||
5307 | int hci_le_create_conn_sync(struct hci_dev *hdev, struct hci_conn *conn) | |
5308 | { | |
5309 | struct hci_cp_le_create_conn cp; | |
5310 | struct hci_conn_params *params; | |
5311 | u8 own_addr_type; | |
5312 | int err; | |
5313 | ||
8e8b92ee LAD |
5314 | /* If requested to connect as peripheral use directed advertising */ |
5315 | if (conn->role == HCI_ROLE_SLAVE) { | |
76d0685b LAD |
5316 | /* If we're active scanning and simultaneous roles is not |
5317 | * enabled simply reject the attempt. | |
8e8b92ee LAD |
5318 | */ |
5319 | if (hci_dev_test_flag(hdev, HCI_LE_SCAN) && | |
4fc9857a | 5320 | hdev->le_scan_type == LE_SCAN_ACTIVE && |
76d0685b | 5321 | !hci_dev_test_flag(hdev, HCI_LE_SIMULTANEOUS_ROLES)) { |
8e8b92ee LAD |
5322 | hci_conn_del(conn); |
5323 | return -EBUSY; | |
5324 | } | |
5325 | ||
4fc9857a LAD |
5326 | /* Pause advertising while doing directed advertising. */ |
5327 | hci_pause_advertising_sync(hdev); | |
5328 | ||
8e8b92ee LAD |
5329 | err = hci_le_directed_advertising_sync(hdev, conn); |
5330 | goto done; | |
5331 | } | |
5332 | ||
76d0685b LAD |
5333 | /* Disable advertising if simultaneous roles is not in use. */ |
5334 | if (!hci_dev_test_flag(hdev, HCI_LE_SIMULTANEOUS_ROLES)) | |
4fc9857a LAD |
5335 | hci_pause_advertising_sync(hdev); |
5336 | ||
8e8b92ee LAD |
5337 | params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); |
5338 | if (params) { | |
5339 | conn->le_conn_min_interval = params->conn_min_interval; | |
5340 | conn->le_conn_max_interval = params->conn_max_interval; | |
5341 | conn->le_conn_latency = params->conn_latency; | |
5342 | conn->le_supv_timeout = params->supervision_timeout; | |
5343 | } else { | |
5344 | conn->le_conn_min_interval = hdev->le_conn_min_interval; | |
5345 | conn->le_conn_max_interval = hdev->le_conn_max_interval; | |
5346 | conn->le_conn_latency = hdev->le_conn_latency; | |
5347 | conn->le_supv_timeout = hdev->le_supv_timeout; | |
5348 | } | |
5349 | ||
5350 | /* If controller is scanning, we stop it since some controllers are | |
5351 | * not able to scan and connect at the same time. Also set the | |
5352 | * HCI_LE_SCAN_INTERRUPTED flag so that the command complete | |
5353 | * handler for scan disabling knows to set the correct discovery | |
5354 | * state. | |
5355 | */ | |
5356 | if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) { | |
5357 | hci_scan_disable_sync(hdev); | |
5358 | hci_dev_set_flag(hdev, HCI_LE_SCAN_INTERRUPTED); | |
5359 | } | |
5360 | ||
5361 | /* Update random address, but set require_privacy to false so | |
5362 | * that we never connect with an non-resolvable address. | |
5363 | */ | |
5364 | err = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn), | |
5365 | &own_addr_type); | |
5366 | if (err) | |
5367 | goto done; | |
5368 | ||
5369 | if (use_ext_conn(hdev)) { | |
5370 | err = hci_le_ext_create_conn_sync(hdev, conn, own_addr_type); | |
5371 | goto done; | |
5372 | } | |
5373 | ||
5374 | memset(&cp, 0, sizeof(cp)); | |
5375 | ||
5376 | cp.scan_interval = cpu_to_le16(hdev->le_scan_int_connect); | |
5377 | cp.scan_window = cpu_to_le16(hdev->le_scan_window_connect); | |
5378 | ||
5379 | bacpy(&cp.peer_addr, &conn->dst); | |
5380 | cp.peer_addr_type = conn->dst_type; | |
5381 | cp.own_address_type = own_addr_type; | |
5382 | cp.conn_interval_min = cpu_to_le16(conn->le_conn_min_interval); | |
5383 | cp.conn_interval_max = cpu_to_le16(conn->le_conn_max_interval); | |
5384 | cp.conn_latency = cpu_to_le16(conn->le_conn_latency); | |
5385 | cp.supervision_timeout = cpu_to_le16(conn->le_supv_timeout); | |
5386 | cp.min_ce_len = cpu_to_le16(0x0000); | |
5387 | cp.max_ce_len = cpu_to_le16(0x0000); | |
5388 | ||
a56a1138 LAD |
5389 | /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2261: |
5390 | * | |
5391 | * If this event is unmasked and the HCI_LE_Connection_Complete event | |
5392 | * is unmasked, only the HCI_LE_Enhanced_Connection_Complete event is | |
5393 | * sent when a new connection has been created. | |
5394 | */ | |
6cd29ec6 | 5395 | err = __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_CREATE_CONN, |
a56a1138 LAD |
5396 | sizeof(cp), &cp, |
5397 | use_enhanced_conn_complete(hdev) ? | |
5398 | HCI_EV_LE_ENHANCED_CONN_COMPLETE : | |
5399 | HCI_EV_LE_CONN_COMPLETE, | |
5400 | conn->conn_timeout, NULL); | |
8e8b92ee LAD |
5401 | |
5402 | done: | |
4fc9857a | 5403 | /* Re-enable advertising after the connection attempt is finished. */ |
8e8b92ee LAD |
5404 | hci_resume_advertising_sync(hdev); |
5405 | return err; | |
5406 | } |