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Bluetooth: Convert le_scan_disable timeout to hci_sync
[linux-block.git] / net / bluetooth / hci_sync.c
CommitLineData
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
22static 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
46static 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
81static 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
111static 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. */
145struct 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}
200EXPORT_SYMBOL(__hci_cmd_sync_sk);
201
202/* This function requires the caller holds hdev->req_lock. */
203struct 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}
208EXPORT_SYMBOL(__hci_cmd_sync);
209
210/* Send HCI command and wait for command complete event */
211struct 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}
227EXPORT_SYMBOL(hci_cmd_sync);
228
229/* This function requires the caller holds hdev->req_lock. */
230struct 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}
236EXPORT_SYMBOL(__hci_cmd_sync_ev);
237
238/* This function requires the caller holds hdev->req_lock. */
239int __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}
266EXPORT_SYMBOL(__hci_cmd_sync_status_sk);
267
268int __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}
274EXPORT_SYMBOL(__hci_cmd_sync_status);
275
276static 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		 313static 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
8ffde2a7
BG		 324static int hci_scan_disable_sync(struct hci_dev *hdev);
325static int scan_disable_sync(struct hci_dev *hdev, void *data)
326{
327 return hci_scan_disable_sync(hdev);
328}
329
330static int hci_inquiry_sync(struct hci_dev *hdev, u8 length);
331static int interleaved_inquiry_sync(struct hci_dev *hdev, void *data)
332{
333 return hci_inquiry_sync(hdev, DISCOV_INTERLEAVED_INQUIRY_LEN);
334}
335
336static void le_scan_disable(struct work_struct *work)
337{
338 struct hci_dev *hdev = container_of(work, struct hci_dev,
339 le_scan_disable.work);
340 int status;
341
342 bt_dev_dbg(hdev, "");
343 hci_dev_lock(hdev);
344
345 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
346 goto _return;
347
348 cancel_delayed_work(&hdev->le_scan_restart);
349
350 status = hci_cmd_sync_queue(hdev, scan_disable_sync, NULL, NULL);
351 if (status) {
352 bt_dev_err(hdev, "failed to disable LE scan: %d", status);
353 goto _return;
354 }
355
356 hdev->discovery.scan_start = 0;
357
358 /* If we were running LE only scan, change discovery state. If
359 * we were running both LE and BR/EDR inquiry simultaneously,
360 * and BR/EDR inquiry is already finished, stop discovery,
361 * otherwise BR/EDR inquiry will stop discovery when finished.
362 * If we will resolve remote device name, do not change
363 * discovery state.
364 */
365
366 if (hdev->discovery.type == DISCOV_TYPE_LE)
367 goto discov_stopped;
368
369 if (hdev->discovery.type != DISCOV_TYPE_INTERLEAVED)
370 goto _return;
371
372 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) {
373 if (!test_bit(HCI_INQUIRY, &hdev->flags) &&
374 hdev->discovery.state != DISCOVERY_RESOLVING)
375 goto discov_stopped;
376
377 goto _return;
378 }
379
380 status = hci_cmd_sync_queue(hdev, interleaved_inquiry_sync, NULL, NULL);
381 if (status) {
382 bt_dev_err(hdev, "inquiry failed: status %d", status);
383 goto discov_stopped;
384 }
385
386 goto _return;
387
388discov_stopped:
389 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
390
391_return:
392 hci_dev_unlock(hdev);
393}
394
6a98e383
MH		 395void hci_cmd_sync_init(struct hci_dev *hdev)
396{
397 INIT_WORK(&hdev->cmd_sync_work, hci_cmd_sync_work);
398 INIT_LIST_HEAD(&hdev->cmd_sync_work_list);
399 mutex_init(&hdev->cmd_sync_work_lock);
744451c1
BB		 400
401 INIT_WORK(&hdev->cmd_sync_cancel_work, hci_cmd_sync_cancel_work);
8ffde2a7 402 INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable);
6a98e383
MH		 403}
404
405void hci_cmd_sync_clear(struct hci_dev *hdev)
406{
407 struct hci_cmd_sync_work_entry *entry, *tmp;
408
409 cancel_work_sync(&hdev->cmd_sync_work);
410
411 list_for_each_entry_safe(entry, tmp, &hdev->cmd_sync_work_list, list) {
412 if (entry->destroy)
413 entry->destroy(hdev, entry->data, -ECANCELED);
414
415 list_del(&entry->list);
416 kfree(entry);
417 }
418}
419
744451c1 420void __hci_cmd_sync_cancel(struct hci_dev *hdev, int err)
914b08b3
BB		 421{
422 bt_dev_dbg(hdev, "err 0x%2.2x", err);
423
424 if (hdev->req_status == HCI_REQ_PEND) {
425 hdev->req_result = err;
426 hdev->req_status = HCI_REQ_CANCELED;
427
428 cancel_delayed_work_sync(&hdev->cmd_timer);
429 cancel_delayed_work_sync(&hdev->ncmd_timer);
430 atomic_set(&hdev->cmd_cnt, 1);
431
432 wake_up_interruptible(&hdev->req_wait_q);
433 }
434}
744451c1
BB		 435
436void hci_cmd_sync_cancel(struct hci_dev *hdev, int err)
437{
438 bt_dev_dbg(hdev, "err 0x%2.2x", err);
439
440 if (hdev->req_status == HCI_REQ_PEND) {
441 hdev->req_result = err;
442 hdev->req_status = HCI_REQ_CANCELED;
443
444 queue_work(hdev->workqueue, &hdev->cmd_sync_cancel_work);
445 }
446}
914b08b3
BB		 447EXPORT_SYMBOL(hci_cmd_sync_cancel);
448
6a98e383
MH		 449int hci_cmd_sync_queue(struct hci_dev *hdev, hci_cmd_sync_work_func_t func,
450 void *data, hci_cmd_sync_work_destroy_t destroy)
451{
452 struct hci_cmd_sync_work_entry *entry;
453
0b94f265
LAD		 454 if (hci_dev_test_flag(hdev, HCI_UNREGISTER))
455 return -ENODEV;
456
6a98e383
MH		 457 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
458 if (!entry)
459 return -ENOMEM;
460
461 entry->func = func;
462 entry->data = data;
463 entry->destroy = destroy;
464
465 mutex_lock(&hdev->cmd_sync_work_lock);
466 list_add_tail(&entry->list, &hdev->cmd_sync_work_list);
467 mutex_unlock(&hdev->cmd_sync_work_lock);
468
469 queue_work(hdev->req_workqueue, &hdev->cmd_sync_work);
470
471 return 0;
472}
473EXPORT_SYMBOL(hci_cmd_sync_queue);
161510cc
LAD		 474
475int hci_update_eir_sync(struct hci_dev *hdev)
476{
477 struct hci_cp_write_eir cp;
478
479 bt_dev_dbg(hdev, "");
480
481 if (!hdev_is_powered(hdev))
482 return 0;
483
484 if (!lmp_ext_inq_capable(hdev))
485 return 0;
486
487 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
488 return 0;
489
490 if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
491 return 0;
492
493 memset(&cp, 0, sizeof(cp));
494
495 eir_create(hdev, cp.data);
496
497 if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0)
498 return 0;
499
500 memcpy(hdev->eir, cp.data, sizeof(cp.data));
501
502 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp,
503 HCI_CMD_TIMEOUT);
504}
505
506static u8 get_service_classes(struct hci_dev *hdev)
507{
508 struct bt_uuid *uuid;
509 u8 val = 0;
510
511 list_for_each_entry(uuid, &hdev->uuids, list)
512 val |= uuid->svc_hint;
513
514 return val;
515}
516
517int hci_update_class_sync(struct hci_dev *hdev)
518{
519 u8 cod[3];
520
521 bt_dev_dbg(hdev, "");
522
523 if (!hdev_is_powered(hdev))
524 return 0;
525
526 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
527 return 0;
528
529 if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
530 return 0;
531
532 cod[0] = hdev->minor_class;
533 cod[1] = hdev->major_class;
534 cod[2] = get_service_classes(hdev);
535
536 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
537 cod[1] |= 0x20;
538
539 if (memcmp(cod, hdev->dev_class, 3) == 0)
540 return 0;
541
542 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CLASS_OF_DEV,
543 sizeof(cod), cod, HCI_CMD_TIMEOUT);
544}
cba6b758
LAD		 545
546static bool is_advertising_allowed(struct hci_dev *hdev, bool connectable)
547{
548 /* If there is no connection we are OK to advertise. */
549 if (hci_conn_num(hdev, LE_LINK) == 0)
550 return true;
551
552 /* Check le_states if there is any connection in peripheral role. */
553 if (hdev->conn_hash.le_num_peripheral > 0) {
554 /* Peripheral connection state and non connectable mode
555 * bit 20.
556 */
557 if (!connectable && !(hdev->le_states[2] & 0x10))
558 return false;
559
560 /* Peripheral connection state and connectable mode bit 38
561 * and scannable bit 21.
562 */
563 if (connectable && (!(hdev->le_states[4] & 0x40) ||
564 !(hdev->le_states[2] & 0x20)))
565 return false;
566 }
567
568 /* Check le_states if there is any connection in central role. */
569 if (hci_conn_num(hdev, LE_LINK) != hdev->conn_hash.le_num_peripheral) {
570 /* Central connection state and non connectable mode bit 18. */
571 if (!connectable && !(hdev->le_states[2] & 0x02))
572 return false;
573
574 /* Central connection state and connectable mode bit 35 and
575 * scannable 19.
576 */
577 if (connectable && (!(hdev->le_states[4] & 0x08) ||
578 !(hdev->le_states[2] & 0x08)))
579 return false;
580 }
581
582 return true;
583}
584
585static bool adv_use_rpa(struct hci_dev *hdev, uint32_t flags)
586{
587 /* If privacy is not enabled don't use RPA */
588 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
589 return false;
590
591 /* If basic privacy mode is enabled use RPA */
592 if (!hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY))
593 return true;
594
595 /* If limited privacy mode is enabled don't use RPA if we're
596 * both discoverable and bondable.
597 */
598 if ((flags & MGMT_ADV_FLAG_DISCOV) &&
599 hci_dev_test_flag(hdev, HCI_BONDABLE))
600 return false;
601
602 /* We're neither bondable nor discoverable in the limited
603 * privacy mode, therefore use RPA.
604 */
605 return true;
606}
607
608static int hci_set_random_addr_sync(struct hci_dev *hdev, bdaddr_t *rpa)
609{
610 /* If we're advertising or initiating an LE connection we can't
611 * go ahead and change the random address at this time. This is
612 * because the eventual initiator address used for the
613 * subsequently created connection will be undefined (some
614 * controllers use the new address and others the one we had
615 * when the operation started).
616 *
617 * In this kind of scenario skip the update and let the random
618 * address be updated at the next cycle.
619 */
620 if (hci_dev_test_flag(hdev, HCI_LE_ADV) ||
621 hci_lookup_le_connect(hdev)) {
622 bt_dev_dbg(hdev, "Deferring random address update");
623 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
624 return 0;
625 }
626
627 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_RANDOM_ADDR,
628 6, rpa, HCI_CMD_TIMEOUT);
629}
630
631int hci_update_random_address_sync(struct hci_dev *hdev, bool require_privacy,
632 bool rpa, u8 *own_addr_type)
633{
634 int err;
635
636 /* If privacy is enabled use a resolvable private address. If
637 * current RPA has expired or there is something else than
638 * the current RPA in use, then generate a new one.
639 */
640 if (rpa) {
641 /* If Controller supports LL Privacy use own address type is
642 * 0x03
643 */
ad383c2c 644 if (use_ll_privacy(hdev))
cba6b758
LAD		 645 *own_addr_type = ADDR_LE_DEV_RANDOM_RESOLVED;
646 else
647 *own_addr_type = ADDR_LE_DEV_RANDOM;
648
649 /* Check if RPA is valid */
650 if (rpa_valid(hdev))
651 return 0;
652
653 err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa);
654 if (err < 0) {
655 bt_dev_err(hdev, "failed to generate new RPA");
656 return err;
657 }
658
659 err = hci_set_random_addr_sync(hdev, &hdev->rpa);
660 if (err)
661 return err;
662
663 return 0;
664 }
665
666 /* In case of required privacy without resolvable private address,
667 * use an non-resolvable private address. This is useful for active
668 * scanning and non-connectable advertising.
669 */
670 if (require_privacy) {
671 bdaddr_t nrpa;
672
673 while (true) {
674 /* The non-resolvable private address is generated
675 * from random six bytes with the two most significant
676 * bits cleared.
677 */
678 get_random_bytes(&nrpa, 6);
679 nrpa.b[5] &= 0x3f;
680
681 /* The non-resolvable private address shall not be
682 * equal to the public address.
683 */
684 if (bacmp(&hdev->bdaddr, &nrpa))
685 break;
686 }
687
688 *own_addr_type = ADDR_LE_DEV_RANDOM;
689
690 return hci_set_random_addr_sync(hdev, &nrpa);
691 }
692
693 /* If forcing static address is in use or there is no public
694 * address use the static address as random address (but skip
695 * the HCI command if the current random address is already the
696 * static one.
697 *
698 * In case BR/EDR has been disabled on a dual-mode controller
699 * and a static address has been configured, then use that
700 * address instead of the public BR/EDR address.
701 */
702 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
703 !bacmp(&hdev->bdaddr, BDADDR_ANY) ||
704 (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
705 bacmp(&hdev->static_addr, BDADDR_ANY))) {
706 *own_addr_type = ADDR_LE_DEV_RANDOM;
707 if (bacmp(&hdev->static_addr, &hdev->random_addr))
708 return hci_set_random_addr_sync(hdev,
709 &hdev->static_addr);
710 return 0;
711 }
712
713 /* Neither privacy nor static address is being used so use a
714 * public address.
715 */
716 *own_addr_type = ADDR_LE_DEV_PUBLIC;
717
718 return 0;
719}
720
721static int hci_disable_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance)
722{
723 struct hci_cp_le_set_ext_adv_enable *cp;
724 struct hci_cp_ext_adv_set *set;
725 u8 data[sizeof(*cp) + sizeof(*set) * 1];
726 u8 size;
727
728 /* If request specifies an instance that doesn't exist, fail */
729 if (instance > 0) {
730 struct adv_info *adv;
731
732 adv = hci_find_adv_instance(hdev, instance);
733 if (!adv)
734 return -EINVAL;
735
736 /* If not enabled there is nothing to do */
737 if (!adv->enabled)
738 return 0;
739 }
740
741 memset(data, 0, sizeof(data));
742
743 cp = (void *)data;
744 set = (void *)cp->data;
745
746 /* Instance 0x00 indicates all advertising instances will be disabled */
747 cp->num_of_sets = !!instance;
748 cp->enable = 0x00;
749
750 set->handle = instance;
751
752 size = sizeof(*cp) + sizeof(*set) * cp->num_of_sets;
753
754 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE,
755 size, data, HCI_CMD_TIMEOUT);
756}
757
758static int hci_set_adv_set_random_addr_sync(struct hci_dev *hdev, u8 instance,
759 bdaddr_t *random_addr)
760{
761 struct hci_cp_le_set_adv_set_rand_addr cp;
762 int err;
763
764 if (!instance) {
765 /* Instance 0x00 doesn't have an adv_info, instead it uses
766 * hdev->random_addr to track its address so whenever it needs
767 * to be updated this also set the random address since
768 * hdev->random_addr is shared with scan state machine.
769 */
770 err = hci_set_random_addr_sync(hdev, random_addr);
771 if (err)
772 return err;
773 }
774
775 memset(&cp, 0, sizeof(cp));
776
777 cp.handle = instance;
778 bacpy(&cp.bdaddr, random_addr);
779
780 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
781 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
782}
783
784int hci_setup_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance)
785{
786 struct hci_cp_le_set_ext_adv_params cp;
787 bool connectable;
788 u32 flags;
789 bdaddr_t random_addr;
790 u8 own_addr_type;
791 int err;
792 struct adv_info *adv;
793 bool secondary_adv;
794
795 if (instance > 0) {
796 adv = hci_find_adv_instance(hdev, instance);
797 if (!adv)
798 return -EINVAL;
799 } else {
800 adv = NULL;
801 }
802
803 /* Updating parameters of an active instance will return a
804 * Command Disallowed error, so we must first disable the
805 * instance if it is active.
806 */
807 if (adv && !adv->pending) {
808 err = hci_disable_ext_adv_instance_sync(hdev, instance);
809 if (err)
810 return err;
811 }
812
813 flags = hci_adv_instance_flags(hdev, instance);
814
815 /* If the "connectable" instance flag was not set, then choose between
816 * ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
817 */
818 connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
819 mgmt_get_connectable(hdev);
820
821 if (!is_advertising_allowed(hdev, connectable))
822 return -EPERM;
823
824 /* Set require_privacy to true only when non-connectable
825 * advertising is used. In that case it is fine to use a
826 * non-resolvable private address.
827 */
828 err = hci_get_random_address(hdev, !connectable,
829 adv_use_rpa(hdev, flags), adv,
830 &own_addr_type, &random_addr);
831 if (err < 0)
832 return err;
833
834 memset(&cp, 0, sizeof(cp));
835
836 if (adv) {
837 hci_cpu_to_le24(adv->min_interval, cp.min_interval);
838 hci_cpu_to_le24(adv->max_interval, cp.max_interval);
839 cp.tx_power = adv->tx_power;
840 } else {
841 hci_cpu_to_le24(hdev->le_adv_min_interval, cp.min_interval);
842 hci_cpu_to_le24(hdev->le_adv_max_interval, cp.max_interval);
843 cp.tx_power = HCI_ADV_TX_POWER_NO_PREFERENCE;
844 }
845
846 secondary_adv = (flags & MGMT_ADV_FLAG_SEC_MASK);
847
848 if (connectable) {
849 if (secondary_adv)
850 cp.evt_properties = cpu_to_le16(LE_EXT_ADV_CONN_IND);
851 else
852 cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_IND);
853 } else if (hci_adv_instance_is_scannable(hdev, instance) ||
854 (flags & MGMT_ADV_PARAM_SCAN_RSP)) {
855 if (secondary_adv)
856 cp.evt_properties = cpu_to_le16(LE_EXT_ADV_SCAN_IND);
857 else
858 cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_SCAN_IND);
859 } else {
860 if (secondary_adv)
861 cp.evt_properties = cpu_to_le16(LE_EXT_ADV_NON_CONN_IND);
862 else
863 cp.evt_properties = cpu_to_le16(LE_LEGACY_NONCONN_IND);
864 }
865
cf75ad8b
LAD		 866 /* If Own_Address_Type equals 0x02 or 0x03, the Peer_Address parameter
867 * contains the peer’s Identity Address and the Peer_Address_Type
868 * parameter contains the peer’s Identity Type (i.e., 0x00 or 0x01).
869 * These parameters are used to locate the corresponding local IRK in
870 * the resolving list; this IRK is used to generate their own address
871 * used in the advertisement.
872 */
873 if (own_addr_type == ADDR_LE_DEV_RANDOM_RESOLVED)
874 hci_copy_identity_address(hdev, &cp.peer_addr,
875 &cp.peer_addr_type);
876
cba6b758
LAD		 877 cp.own_addr_type = own_addr_type;
878 cp.channel_map = hdev->le_adv_channel_map;
879 cp.handle = instance;
880
881 if (flags & MGMT_ADV_FLAG_SEC_2M) {
882 cp.primary_phy = HCI_ADV_PHY_1M;
883 cp.secondary_phy = HCI_ADV_PHY_2M;
884 } else if (flags & MGMT_ADV_FLAG_SEC_CODED) {
885 cp.primary_phy = HCI_ADV_PHY_CODED;
886 cp.secondary_phy = HCI_ADV_PHY_CODED;
887 } else {
888 /* In all other cases use 1M */
889 cp.primary_phy = HCI_ADV_PHY_1M;
890 cp.secondary_phy = HCI_ADV_PHY_1M;
891 }
892
893 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS,
894 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
895 if (err)
896 return err;
897
898 if ((own_addr_type == ADDR_LE_DEV_RANDOM ||
899 own_addr_type == ADDR_LE_DEV_RANDOM_RESOLVED) &&
900 bacmp(&random_addr, BDADDR_ANY)) {
901 /* Check if random address need to be updated */
902 if (adv) {
903 if (!bacmp(&random_addr, &adv->random_addr))
904 return 0;
905 } else {
906 if (!bacmp(&random_addr, &hdev->random_addr))
907 return 0;
908 }
909
910 return hci_set_adv_set_random_addr_sync(hdev, instance,
911 &random_addr);
912 }
913
914 return 0;
915}
916
917static int hci_set_ext_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
918{
919 struct {
920 struct hci_cp_le_set_ext_scan_rsp_data cp;
921 u8 data[HCI_MAX_EXT_AD_LENGTH];
922 } pdu;
923 u8 len;
34a718bc
LAD		 924 struct adv_info *adv = NULL;
925 int err;
cba6b758
LAD		 926
927 memset(&pdu, 0, sizeof(pdu));
928
34a718bc
LAD		 929 if (instance) {
930 adv = hci_find_adv_instance(hdev, instance);
931 if (!adv || !adv->scan_rsp_changed)
932 return 0;
933 }
cba6b758 934
34a718bc 935 len = eir_create_scan_rsp(hdev, instance, pdu.data);
cba6b758
LAD		 936
937 pdu.cp.handle = instance;
938 pdu.cp.length = len;
939 pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
940 pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
941
34a718bc
LAD		 942 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_RSP_DATA,
943 sizeof(pdu.cp) + len, &pdu.cp,
944 HCI_CMD_TIMEOUT);
945 if (err)
946 return err;
947
948 if (adv) {
949 adv->scan_rsp_changed = false;
950 } else {
951 memcpy(hdev->scan_rsp_data, pdu.data, len);
952 hdev->scan_rsp_data_len = len;
953 }
954
955 return 0;
cba6b758
LAD		 956}
957
958static int __hci_set_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
959{
960 struct hci_cp_le_set_scan_rsp_data cp;
961 u8 len;
962
963 memset(&cp, 0, sizeof(cp));
964
965 len = eir_create_scan_rsp(hdev, instance, cp.data);
966
967 if (hdev->scan_rsp_data_len == len &&
968 !memcmp(cp.data, hdev->scan_rsp_data, len))
969 return 0;
970
971 memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));
972 hdev->scan_rsp_data_len = len;
973
974 cp.length = len;
975
976 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_RSP_DATA,
977 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
978}
979
980int hci_update_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
981{
982 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
983 return 0;
984
985 if (ext_adv_capable(hdev))
986 return hci_set_ext_scan_rsp_data_sync(hdev, instance);
987
988 return __hci_set_scan_rsp_data_sync(hdev, instance);
989}
990
991int hci_enable_ext_advertising_sync(struct hci_dev *hdev, u8 instance)
992{
993 struct hci_cp_le_set_ext_adv_enable *cp;
994 struct hci_cp_ext_adv_set *set;
995 u8 data[sizeof(*cp) + sizeof(*set) * 1];
996 struct adv_info *adv;
997
998 if (instance > 0) {
999 adv = hci_find_adv_instance(hdev, instance);
1000 if (!adv)
1001 return -EINVAL;
1002 /* If already enabled there is nothing to do */
1003 if (adv->enabled)
1004 return 0;
1005 } else {
1006 adv = NULL;
1007 }
1008
1009 cp = (void *)data;
1010 set = (void *)cp->data;
1011
1012 memset(cp, 0, sizeof(*cp));
1013
1014 cp->enable = 0x01;
1015 cp->num_of_sets = 0x01;
1016
1017 memset(set, 0, sizeof(*set));
1018
1019 set->handle = instance;
1020
1021 /* Set duration per instance since controller is responsible for
1022 * scheduling it.
1023 */
f16a491c 1024 if (adv && adv->timeout) {
cba6b758
LAD		 1025 u16 duration = adv->timeout * MSEC_PER_SEC;
1026
1027 /* Time = N * 10 ms */
1028 set->duration = cpu_to_le16(duration / 10);
1029 }
1030
1031 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE,
1032 sizeof(*cp) +
1033 sizeof(*set) * cp->num_of_sets,
1034 data, HCI_CMD_TIMEOUT);
1035}
1036
1037int hci_start_ext_adv_sync(struct hci_dev *hdev, u8 instance)
1038{
1039 int err;
1040
1041 err = hci_setup_ext_adv_instance_sync(hdev, instance);
1042 if (err)
1043 return err;
1044
1045 err = hci_set_ext_scan_rsp_data_sync(hdev, instance);
1046 if (err)
1047 return err;
1048
1049 return hci_enable_ext_advertising_sync(hdev, instance);
1050}
1051
eca0ae4a
LAD		 1052static int hci_disable_per_advertising_sync(struct hci_dev *hdev, u8 instance)
1053{
1054 struct hci_cp_le_set_per_adv_enable cp;
1055
1056 /* If periodic advertising already disabled there is nothing to do. */
1057 if (!hci_dev_test_flag(hdev, HCI_LE_PER_ADV))
1058 return 0;
1059
1060 memset(&cp, 0, sizeof(cp));
1061
1062 cp.enable = 0x00;
1063 cp.handle = instance;
1064
1065 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE,
1066 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1067}
1068
1069static int hci_set_per_adv_params_sync(struct hci_dev *hdev, u8 instance,
1070 u16 min_interval, u16 max_interval)
1071{
1072 struct hci_cp_le_set_per_adv_params cp;
1073
1074 memset(&cp, 0, sizeof(cp));
1075
1076 if (!min_interval)
1077 min_interval = DISCOV_LE_PER_ADV_INT_MIN;
1078
1079 if (!max_interval)
1080 max_interval = DISCOV_LE_PER_ADV_INT_MAX;
1081
1082 cp.handle = instance;
1083 cp.min_interval = cpu_to_le16(min_interval);
1084 cp.max_interval = cpu_to_le16(max_interval);
1085 cp.periodic_properties = 0x0000;
1086
1087 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS,
1088 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1089}
1090
1091static int hci_set_per_adv_data_sync(struct hci_dev *hdev, u8 instance)
1092{
1093 struct {
1094 struct hci_cp_le_set_per_adv_data cp;
1095 u8 data[HCI_MAX_PER_AD_LENGTH];
1096 } pdu;
1097 u8 len;
1098
1099 memset(&pdu, 0, sizeof(pdu));
1100
1101 if (instance) {
1102 struct adv_info *adv = hci_find_adv_instance(hdev, instance);
1103
1104 if (!adv || !adv->periodic)
1105 return 0;
1106 }
1107
1108 len = eir_create_per_adv_data(hdev, instance, pdu.data);
1109
1110 pdu.cp.length = len;
1111 pdu.cp.handle = instance;
1112 pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
1113
1114 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_DATA,
1115 sizeof(pdu.cp) + len, &pdu,
1116 HCI_CMD_TIMEOUT);
1117}
1118
1119static int hci_enable_per_advertising_sync(struct hci_dev *hdev, u8 instance)
1120{
1121 struct hci_cp_le_set_per_adv_enable cp;
1122
1123 /* If periodic advertising already enabled there is nothing to do. */
1124 if (hci_dev_test_flag(hdev, HCI_LE_PER_ADV))
1125 return 0;
1126
1127 memset(&cp, 0, sizeof(cp));
1128
1129 cp.enable = 0x01;
1130 cp.handle = instance;
1131
1132 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE,
1133 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1134}
1135
1136/* Checks if periodic advertising data contains a Basic Announcement and if it
1137 * does generates a Broadcast ID and add Broadcast Announcement.
1138 */
1139static int hci_adv_bcast_annoucement(struct hci_dev *hdev, struct adv_info *adv)
1140{
1141 u8 bid[3];
1142 u8 ad[4 + 3];
1143
1144 /* Skip if NULL adv as instance 0x00 is used for general purpose
1145 * advertising so it cannot used for the likes of Broadcast Announcement
1146 * as it can be overwritten at any point.
1147 */
1148 if (!adv)
1149 return 0;
1150
1151 /* Check if PA data doesn't contains a Basic Audio Announcement then
1152 * there is nothing to do.
1153 */
1154 if (!eir_get_service_data(adv->per_adv_data, adv->per_adv_data_len,
1155 0x1851, NULL))
1156 return 0;
1157
1158 /* Check if advertising data already has a Broadcast Announcement since
1159 * the process may want to control the Broadcast ID directly and in that
1160 * case the kernel shall no interfere.
1161 */
1162 if (eir_get_service_data(adv->adv_data, adv->adv_data_len, 0x1852,
1163 NULL))
1164 return 0;
1165
1166 /* Generate Broadcast ID */
1167 get_random_bytes(bid, sizeof(bid));
1168 eir_append_service_data(ad, 0, 0x1852, bid, sizeof(bid));
1169 hci_set_adv_instance_data(hdev, adv->instance, sizeof(ad), ad, 0, NULL);
1170
1171 return hci_update_adv_data_sync(hdev, adv->instance);
1172}
1173
1174int hci_start_per_adv_sync(struct hci_dev *hdev, u8 instance, u8 data_len,
1175 u8 *data, u32 flags, u16 min_interval,
1176 u16 max_interval, u16 sync_interval)
1177{
1178 struct adv_info *adv = NULL;
1179 int err;
1180 bool added = false;
1181
1182 hci_disable_per_advertising_sync(hdev, instance);
1183
1184 if (instance) {
1185 adv = hci_find_adv_instance(hdev, instance);
1186 /* Create an instance if that could not be found */
1187 if (!adv) {
1188 adv = hci_add_per_instance(hdev, instance, flags,
1189 data_len, data,
1190 sync_interval,
1191 sync_interval);
1192 if (IS_ERR(adv))
1193 return PTR_ERR(adv);
1194 added = true;
1195 }
1196 }
1197
1198 /* Only start advertising if instance 0 or if a dedicated instance has
1199 * been added.
1200 */
1201 if (!adv || added) {
1202 err = hci_start_ext_adv_sync(hdev, instance);
1203 if (err < 0)
1204 goto fail;
1205
1206 err = hci_adv_bcast_annoucement(hdev, adv);
1207 if (err < 0)
1208 goto fail;
1209 }
1210
1211 err = hci_set_per_adv_params_sync(hdev, instance, min_interval,
1212 max_interval);
1213 if (err < 0)
1214 goto fail;
1215
1216 err = hci_set_per_adv_data_sync(hdev, instance);
1217 if (err < 0)
1218 goto fail;
1219
1220 err = hci_enable_per_advertising_sync(hdev, instance);
1221 if (err < 0)
1222 goto fail;
1223
1224 return 0;
1225
1226fail:
1227 if (added)
1228 hci_remove_adv_instance(hdev, instance);
1229
1230 return err;
1231}
1232
cba6b758
LAD		 1233static int hci_start_adv_sync(struct hci_dev *hdev, u8 instance)
1234{
1235 int err;
1236
1237 if (ext_adv_capable(hdev))
1238 return hci_start_ext_adv_sync(hdev, instance);
1239
1240 err = hci_update_adv_data_sync(hdev, instance);
1241 if (err)
1242 return err;
1243
1244 err = hci_update_scan_rsp_data_sync(hdev, instance);
1245 if (err)
1246 return err;
1247
1248 return hci_enable_advertising_sync(hdev);
1249}
1250
1251int hci_enable_advertising_sync(struct hci_dev *hdev)
1252{
1253 struct adv_info *adv_instance;
1254 struct hci_cp_le_set_adv_param cp;
1255 u8 own_addr_type, enable = 0x01;
1256 bool connectable;
1257 u16 adv_min_interval, adv_max_interval;
1258 u32 flags;
1259 u8 status;
1260
ad383c2c
LAD		 1261 if (ext_adv_capable(hdev))
1262 return hci_enable_ext_advertising_sync(hdev,
1263 hdev->cur_adv_instance);
1264
cba6b758
LAD		 1265 flags = hci_adv_instance_flags(hdev, hdev->cur_adv_instance);
1266 adv_instance = hci_find_adv_instance(hdev, hdev->cur_adv_instance);
1267
1268 /* If the "connectable" instance flag was not set, then choose between
1269 * ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
1270 */
1271 connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
1272 mgmt_get_connectable(hdev);
1273
1274 if (!is_advertising_allowed(hdev, connectable))
1275 return -EINVAL;
1276
ad383c2c
LAD		 1277 status = hci_disable_advertising_sync(hdev);
1278 if (status)
1279 return status;
cba6b758
LAD		 1280
1281 /* Clear the HCI_LE_ADV bit temporarily so that the
1282 * hci_update_random_address knows that it's safe to go ahead
1283 * and write a new random address. The flag will be set back on
1284 * as soon as the SET_ADV_ENABLE HCI command completes.
1285 */
1286 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1287
1288 /* Set require_privacy to true only when non-connectable
1289 * advertising is used. In that case it is fine to use a
1290 * non-resolvable private address.
1291 */
1292 status = hci_update_random_address_sync(hdev, !connectable,
1293 adv_use_rpa(hdev, flags),
1294 &own_addr_type);
1295 if (status)
1296 return status;
1297
1298 memset(&cp, 0, sizeof(cp));
1299
1300 if (adv_instance) {
1301 adv_min_interval = adv_instance->min_interval;
1302 adv_max_interval = adv_instance->max_interval;
1303 } else {
1304 adv_min_interval = hdev->le_adv_min_interval;
1305 adv_max_interval = hdev->le_adv_max_interval;
1306 }
1307
1308 if (connectable) {
1309 cp.type = LE_ADV_IND;
1310 } else {
1311 if (hci_adv_instance_is_scannable(hdev, hdev->cur_adv_instance))
1312 cp.type = LE_ADV_SCAN_IND;
1313 else
1314 cp.type = LE_ADV_NONCONN_IND;
1315
1316 if (!hci_dev_test_flag(hdev, HCI_DISCOVERABLE) ||
1317 hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) {
1318 adv_min_interval = DISCOV_LE_FAST_ADV_INT_MIN;
1319 adv_max_interval = DISCOV_LE_FAST_ADV_INT_MAX;
1320 }
1321 }
1322
1323 cp.min_interval = cpu_to_le16(adv_min_interval);
1324 cp.max_interval = cpu_to_le16(adv_max_interval);
1325 cp.own_address_type = own_addr_type;
1326 cp.channel_map = hdev->le_adv_channel_map;
1327
1328 status = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_PARAM,
1329 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1330 if (status)
1331 return status;
1332
1333 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
1334 sizeof(enable), &enable, HCI_CMD_TIMEOUT);
1335}
1336
abfeea47
LAD		 1337static int enable_advertising_sync(struct hci_dev *hdev, void *data)
1338{
1339 return hci_enable_advertising_sync(hdev);
1340}
1341
1342int hci_enable_advertising(struct hci_dev *hdev)
1343{
1344 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
1345 list_empty(&hdev->adv_instances))
1346 return 0;
1347
1348 return hci_cmd_sync_queue(hdev, enable_advertising_sync, NULL, NULL);
1349}
1350
1351int hci_remove_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance,
1352 struct sock *sk)
cba6b758
LAD		 1353{
1354 int err;
1355
1356 if (!ext_adv_capable(hdev))
1357 return 0;
1358
1359 err = hci_disable_ext_adv_instance_sync(hdev, instance);
1360 if (err)
1361 return err;
1362
1363 /* If request specifies an instance that doesn't exist, fail */
1364 if (instance > 0 && !hci_find_adv_instance(hdev, instance))
1365 return -EINVAL;
1366
1367 return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_REMOVE_ADV_SET,
1368 sizeof(instance), &instance, 0,
1369 HCI_CMD_TIMEOUT, sk);
1370}
1371
eca0ae4a
LAD		 1372static int remove_ext_adv_sync(struct hci_dev *hdev, void *data)
1373{
1374 struct adv_info *adv = data;
1375 u8 instance = 0;
1376
1377 if (adv)
1378 instance = adv->instance;
1379
1380 return hci_remove_ext_adv_instance_sync(hdev, instance, NULL);
1381}
1382
1383int hci_remove_ext_adv_instance(struct hci_dev *hdev, u8 instance)
1384{
1385 struct adv_info *adv = NULL;
1386
1387 if (instance) {
1388 adv = hci_find_adv_instance(hdev, instance);
1389 if (!adv)
1390 return -EINVAL;
1391 }
1392
1393 return hci_cmd_sync_queue(hdev, remove_ext_adv_sync, adv, NULL);
1394}
1395
1396int hci_le_terminate_big_sync(struct hci_dev *hdev, u8 handle, u8 reason)
1397{
1398 struct hci_cp_le_term_big cp;
1399
1400 memset(&cp, 0, sizeof(cp));
1401 cp.handle = handle;
1402 cp.reason = reason;
1403
1404 return __hci_cmd_sync_status(hdev, HCI_OP_LE_TERM_BIG,
1405 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1406}
1407
cba6b758
LAD		 1408static void cancel_adv_timeout(struct hci_dev *hdev)
1409{
1410 if (hdev->adv_instance_timeout) {
1411 hdev->adv_instance_timeout = 0;
1412 cancel_delayed_work(&hdev->adv_instance_expire);
1413 }
1414}
1415
1416static int hci_set_ext_adv_data_sync(struct hci_dev *hdev, u8 instance)
1417{
1418 struct {
1419 struct hci_cp_le_set_ext_adv_data cp;
1420 u8 data[HCI_MAX_EXT_AD_LENGTH];
1421 } pdu;
1422 u8 len;
34a718bc
LAD		 1423 struct adv_info *adv = NULL;
1424 int err;
cba6b758
LAD		 1425
1426 memset(&pdu, 0, sizeof(pdu));
1427
34a718bc
LAD		 1428 if (instance) {
1429 adv = hci_find_adv_instance(hdev, instance);
1430 if (!adv || !adv->adv_data_changed)
1431 return 0;
1432 }
cba6b758 1433
34a718bc 1434 len = eir_create_adv_data(hdev, instance, pdu.data);
cba6b758
LAD		 1435
1436 pdu.cp.length = len;
1437 pdu.cp.handle = instance;
1438 pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
1439 pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
1440
34a718bc
LAD		 1441 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_DATA,
1442 sizeof(pdu.cp) + len, &pdu.cp,
1443 HCI_CMD_TIMEOUT);
1444 if (err)
1445 return err;
1446
1447 /* Update data if the command succeed */
1448 if (adv) {
1449 adv->adv_data_changed = false;
1450 } else {
1451 memcpy(hdev->adv_data, pdu.data, len);
1452 hdev->adv_data_len = len;
1453 }
1454
1455 return 0;
cba6b758
LAD		 1456}
1457
1458static int hci_set_adv_data_sync(struct hci_dev *hdev, u8 instance)
1459{
1460 struct hci_cp_le_set_adv_data cp;
1461 u8 len;
1462
1463 memset(&cp, 0, sizeof(cp));
1464
1465 len = eir_create_adv_data(hdev, instance, cp.data);
1466
1467 /* There's nothing to do if the data hasn't changed */
1468 if (hdev->adv_data_len == len &&
1469 memcmp(cp.data, hdev->adv_data, len) == 0)
1470 return 0;
1471
1472 memcpy(hdev->adv_data, cp.data, sizeof(cp.data));
1473 hdev->adv_data_len = len;
1474
1475 cp.length = len;
1476
1477 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_DATA,
1478 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1479}
1480
1481int hci_update_adv_data_sync(struct hci_dev *hdev, u8 instance)
1482{
1483 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
1484 return 0;
1485
1486 if (ext_adv_capable(hdev))
1487 return hci_set_ext_adv_data_sync(hdev, instance);
1488
1489 return hci_set_adv_data_sync(hdev, instance);
1490}
1491
1492int hci_schedule_adv_instance_sync(struct hci_dev *hdev, u8 instance,
1493 bool force)
1494{
1495 struct adv_info *adv = NULL;
1496 u16 timeout;
1497
cf75ad8b 1498 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) && !ext_adv_capable(hdev))
cba6b758
LAD		 1499 return -EPERM;
1500
1501 if (hdev->adv_instance_timeout)
1502 return -EBUSY;
1503
1504 adv = hci_find_adv_instance(hdev, instance);
1505 if (!adv)
1506 return -ENOENT;
1507
1508 /* A zero timeout means unlimited advertising. As long as there is
1509 * only one instance, duration should be ignored. We still set a timeout
1510 * in case further instances are being added later on.
1511 *
1512 * If the remaining lifetime of the instance is more than the duration
1513 * then the timeout corresponds to the duration, otherwise it will be
1514 * reduced to the remaining instance lifetime.
1515 */
1516 if (adv->timeout == 0 || adv->duration <= adv->remaining_time)
1517 timeout = adv->duration;
1518 else
1519 timeout = adv->remaining_time;
1520
1521 /* The remaining time is being reduced unless the instance is being
1522 * advertised without time limit.
1523 */
1524 if (adv->timeout)
1525 adv->remaining_time = adv->remaining_time - timeout;
1526
1527 /* Only use work for scheduling instances with legacy advertising */
1528 if (!ext_adv_capable(hdev)) {
1529 hdev->adv_instance_timeout = timeout;
1530 queue_delayed_work(hdev->req_workqueue,
1531 &hdev->adv_instance_expire,
1532 msecs_to_jiffies(timeout * 1000));
1533 }
1534
1535 /* If we're just re-scheduling the same instance again then do not
1536 * execute any HCI commands. This happens when a single instance is
1537 * being advertised.
1538 */
1539 if (!force && hdev->cur_adv_instance == instance &&
1540 hci_dev_test_flag(hdev, HCI_LE_ADV))
1541 return 0;
1542
1543 hdev->cur_adv_instance = instance;
1544
1545 return hci_start_adv_sync(hdev, instance);
1546}
1547
1548static int hci_clear_adv_sets_sync(struct hci_dev *hdev, struct sock *sk)
1549{
1550 int err;
1551
1552 if (!ext_adv_capable(hdev))
1553 return 0;
1554
1555 /* Disable instance 0x00 to disable all instances */
1556 err = hci_disable_ext_adv_instance_sync(hdev, 0x00);
1557 if (err)
1558 return err;
1559
1560 return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_CLEAR_ADV_SETS,
1561 0, NULL, 0, HCI_CMD_TIMEOUT, sk);
1562}
1563
1564static int hci_clear_adv_sync(struct hci_dev *hdev, struct sock *sk, bool force)
1565{
1566 struct adv_info *adv, *n;
1567
1568 if (ext_adv_capable(hdev))
1569 /* Remove all existing sets */
1570 return hci_clear_adv_sets_sync(hdev, sk);
1571
1572 /* This is safe as long as there is no command send while the lock is
1573 * held.
1574 */
1575 hci_dev_lock(hdev);
1576
1577 /* Cleanup non-ext instances */
1578 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1579 u8 instance = adv->instance;
1580 int err;
1581
1582 if (!(force || adv->timeout))
1583 continue;
1584
1585 err = hci_remove_adv_instance(hdev, instance);
1586 if (!err)
1587 mgmt_advertising_removed(sk, hdev, instance);
1588 }
1589
1590 hci_dev_unlock(hdev);
1591
1592 return 0;
1593}
1594
1595static int hci_remove_adv_sync(struct hci_dev *hdev, u8 instance,
1596 struct sock *sk)
1597{
1598 int err;
1599
1600 /* If we use extended advertising, instance has to be removed first. */
1601 if (ext_adv_capable(hdev))
1602 return hci_remove_ext_adv_instance_sync(hdev, instance, sk);
1603
1604 /* This is safe as long as there is no command send while the lock is
1605 * held.
1606 */
1607 hci_dev_lock(hdev);
1608
1609 err = hci_remove_adv_instance(hdev, instance);
1610 if (!err)
1611 mgmt_advertising_removed(sk, hdev, instance);
1612
1613 hci_dev_unlock(hdev);
1614
1615 return err;
1616}
1617
1618/* For a single instance:
1619 * - force == true: The instance will be removed even when its remaining
1620 * lifetime is not zero.
1621 * - force == false: the instance will be deactivated but kept stored unless
1622 * the remaining lifetime is zero.
1623 *
1624 * For instance == 0x00:
1625 * - force == true: All instances will be removed regardless of their timeout
1626 * setting.
1627 * - force == false: Only instances that have a timeout will be removed.
1628 */
1629int hci_remove_advertising_sync(struct hci_dev *hdev, struct sock *sk,
1630 u8 instance, bool force)
1631{
1632 struct adv_info *next = NULL;
1633 int err;
1634
1635 /* Cancel any timeout concerning the removed instance(s). */
1636 if (!instance || hdev->cur_adv_instance == instance)
1637 cancel_adv_timeout(hdev);
1638
1639 /* Get the next instance to advertise BEFORE we remove
1640 * the current one. This can be the same instance again
1641 * if there is only one instance.
1642 */
1643 if (hdev->cur_adv_instance == instance)
1644 next = hci_get_next_instance(hdev, instance);
1645
1646 if (!instance) {
1647 err = hci_clear_adv_sync(hdev, sk, force);
1648 if (err)
1649 return err;
1650 } else {
1651 struct adv_info *adv = hci_find_adv_instance(hdev, instance);
1652
1653 if (force || (adv && adv->timeout && !adv->remaining_time)) {
1654 /* Don't advertise a removed instance. */
1655 if (next && next->instance == instance)
1656 next = NULL;
1657
1658 err = hci_remove_adv_sync(hdev, instance, sk);
1659 if (err)
1660 return err;
1661 }
1662 }
1663
1664 if (!hdev_is_powered(hdev) || hci_dev_test_flag(hdev, HCI_ADVERTISING))
1665 return 0;
1666
1667 if (next && !ext_adv_capable(hdev))
1668 hci_schedule_adv_instance_sync(hdev, next->instance, false);
1669
1670 return 0;
1671}
1672
47db6b42
BG		 1673int hci_read_rssi_sync(struct hci_dev *hdev, __le16 handle)
1674{
1675 struct hci_cp_read_rssi cp;
1676
1677 cp.handle = handle;
1678 return __hci_cmd_sync_status(hdev, HCI_OP_READ_RSSI,
1679 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1680}
1681
5a750137
BG		 1682int hci_read_clock_sync(struct hci_dev *hdev, struct hci_cp_read_clock *cp)
1683{
1684 return __hci_cmd_sync_status(hdev, HCI_OP_READ_CLOCK,
1685 sizeof(*cp), cp, HCI_CMD_TIMEOUT);
1686}
1687
47db6b42
BG		 1688int hci_read_tx_power_sync(struct hci_dev *hdev, __le16 handle, u8 type)
1689{
1690 struct hci_cp_read_tx_power cp;
1691
1692 cp.handle = handle;
1693 cp.type = type;
1694 return __hci_cmd_sync_status(hdev, HCI_OP_READ_TX_POWER,
1695 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1696}
1697
cba6b758
LAD		 1698int hci_disable_advertising_sync(struct hci_dev *hdev)
1699{
1700 u8 enable = 0x00;
1701
ad383c2c
LAD		 1702 /* If controller is not advertising we are done. */
1703 if (!hci_dev_test_flag(hdev, HCI_LE_ADV))
1704 return 0;
1705
cba6b758
LAD		 1706 if (ext_adv_capable(hdev))
1707 return hci_disable_ext_adv_instance_sync(hdev, 0x00);
1708
1709 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
1710 sizeof(enable), &enable, HCI_CMD_TIMEOUT);
1711}
e8907f76
LAD		 1712
1713static int hci_le_set_ext_scan_enable_sync(struct hci_dev *hdev, u8 val,
1714 u8 filter_dup)
1715{
1716 struct hci_cp_le_set_ext_scan_enable cp;
1717
1718 memset(&cp, 0, sizeof(cp));
1719 cp.enable = val;
1720 cp.filter_dup = filter_dup;
1721
1722 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE,
1723 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1724}
1725
1726static int hci_le_set_scan_enable_sync(struct hci_dev *hdev, u8 val,
1727 u8 filter_dup)
1728{
1729 struct hci_cp_le_set_scan_enable cp;
1730
1731 if (use_ext_scan(hdev))
1732 return hci_le_set_ext_scan_enable_sync(hdev, val, filter_dup);
1733
1734 memset(&cp, 0, sizeof(cp));
1735 cp.enable = val;
1736 cp.filter_dup = filter_dup;
1737
1738 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_ENABLE,
1739 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1740}
1741
1742static int hci_le_set_addr_resolution_enable_sync(struct hci_dev *hdev, u8 val)
1743{
ad383c2c
LAD		 1744 if (!use_ll_privacy(hdev))
1745 return 0;
1746
1747 /* If controller is not/already resolving we are done. */
1748 if (val == hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION))
e8907f76
LAD		 1749 return 0;
1750
1751 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
1752 sizeof(val), &val, HCI_CMD_TIMEOUT);
1753}
1754
27592ca1 1755static int hci_scan_disable_sync(struct hci_dev *hdev)
e8907f76
LAD		 1756{
1757 int err;
1758
1759 /* If controller is not scanning we are done. */
1760 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
1761 return 0;
1762
1763 if (hdev->scanning_paused) {
1764 bt_dev_dbg(hdev, "Scanning is paused for suspend");
1765 return 0;
1766 }
1767
e8907f76
LAD		 1768 err = hci_le_set_scan_enable_sync(hdev, LE_SCAN_DISABLE, 0x00);
1769 if (err) {
1770 bt_dev_err(hdev, "Unable to disable scanning: %d", err);
1771 return err;
1772 }
1773
e8907f76
LAD		 1774 return err;
1775}
1776
1777static bool scan_use_rpa(struct hci_dev *hdev)
1778{
1779 return hci_dev_test_flag(hdev, HCI_PRIVACY);
1780}
1781
1782static void hci_start_interleave_scan(struct hci_dev *hdev)
1783{
1784 hdev->interleave_scan_state = INTERLEAVE_SCAN_NO_FILTER;
1785 queue_delayed_work(hdev->req_workqueue,
1786 &hdev->interleave_scan, 0);
1787}
1788
1789static bool is_interleave_scanning(struct hci_dev *hdev)
1790{
1791 return hdev->interleave_scan_state != INTERLEAVE_SCAN_NONE;
1792}
1793
1794static void cancel_interleave_scan(struct hci_dev *hdev)
1795{
1796 bt_dev_dbg(hdev, "cancelling interleave scan");
1797
1798 cancel_delayed_work_sync(&hdev->interleave_scan);
1799
1800 hdev->interleave_scan_state = INTERLEAVE_SCAN_NONE;
1801}
1802
1803/* Return true if interleave_scan wasn't started until exiting this function,
1804 * otherwise, return false
1805 */
1806static bool hci_update_interleaved_scan_sync(struct hci_dev *hdev)
1807{
1808 /* Do interleaved scan only if all of the following are true:
1809 * - There is at least one ADV monitor
1810 * - At least one pending LE connection or one device to be scanned for
1811 * - Monitor offloading is not supported
1812 * If so, we should alternate between allowlist scan and one without
1813 * any filters to save power.
1814 */
1815 bool use_interleaving = hci_is_adv_monitoring(hdev) &&
1816 !(list_empty(&hdev->pend_le_conns) &&
1817 list_empty(&hdev->pend_le_reports)) &&
1818 hci_get_adv_monitor_offload_ext(hdev) ==
1819 HCI_ADV_MONITOR_EXT_NONE;
1820 bool is_interleaving = is_interleave_scanning(hdev);
1821
1822 if (use_interleaving && !is_interleaving) {
1823 hci_start_interleave_scan(hdev);
1824 bt_dev_dbg(hdev, "starting interleave scan");
1825 return true;
1826 }
1827
1828 if (!use_interleaving && is_interleaving)
1829 cancel_interleave_scan(hdev);
1830
1831 return false;
1832}
1833
1834/* Removes connection to resolve list if needed.*/
1835static int hci_le_del_resolve_list_sync(struct hci_dev *hdev,
1836 bdaddr_t *bdaddr, u8 bdaddr_type)
1837{
1838 struct hci_cp_le_del_from_resolv_list cp;
1839 struct bdaddr_list_with_irk *entry;
1840
ad383c2c 1841 if (!use_ll_privacy(hdev))
e8907f76
LAD		 1842 return 0;
1843
1844 /* Check if the IRK has been programmed */
1845 entry = hci_bdaddr_list_lookup_with_irk(&hdev->le_resolv_list, bdaddr,
1846 bdaddr_type);
1847 if (!entry)
1848 return 0;
1849
1850 cp.bdaddr_type = bdaddr_type;
1851 bacpy(&cp.bdaddr, bdaddr);
1852
1853 return __hci_cmd_sync_status(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST,
1854 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1855}
1856
1857static int hci_le_del_accept_list_sync(struct hci_dev *hdev,
1858 bdaddr_t *bdaddr, u8 bdaddr_type)
1859{
1860 struct hci_cp_le_del_from_accept_list cp;
1861 int err;
1862
1863 /* Check if device is on accept list before removing it */
1864 if (!hci_bdaddr_list_lookup(&hdev->le_accept_list, bdaddr, bdaddr_type))
1865 return 0;
1866
1867 cp.bdaddr_type = bdaddr_type;
1868 bacpy(&cp.bdaddr, bdaddr);
1869
ad383c2c
LAD		 1870 /* Ignore errors when removing from resolving list as that is likely
1871 * that the device was never added.
1872 */
1873 hci_le_del_resolve_list_sync(hdev, &cp.bdaddr, cp.bdaddr_type);
1874
e8907f76
LAD		 1875 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
1876 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1877 if (err) {
1878 bt_dev_err(hdev, "Unable to remove from allow list: %d", err);
1879 return err;
1880 }
1881
1882 bt_dev_dbg(hdev, "Remove %pMR (0x%x) from allow list", &cp.bdaddr,
1883 cp.bdaddr_type);
1884
ad383c2c 1885 return 0;
e8907f76
LAD		 1886}
1887
cf75ad8b
LAD		 1888/* Adds connection to resolve list if needed.
1889 * Setting params to NULL programs local hdev->irk
1890 */
e8907f76
LAD		 1891static int hci_le_add_resolve_list_sync(struct hci_dev *hdev,
1892 struct hci_conn_params *params)
1893{
1894 struct hci_cp_le_add_to_resolv_list cp;
1895 struct smp_irk *irk;
1896 struct bdaddr_list_with_irk *entry;
1897
ad383c2c 1898 if (!use_ll_privacy(hdev))
e8907f76
LAD		 1899 return 0;
1900
cf75ad8b
LAD		 1901 /* Attempt to program local identity address, type and irk if params is
1902 * NULL.
1903 */
1904 if (!params) {
1905 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
1906 return 0;
1907
1908 hci_copy_identity_address(hdev, &cp.bdaddr, &cp.bdaddr_type);
1909 memcpy(cp.peer_irk, hdev->irk, 16);
1910 goto done;
1911 }
1912
e8907f76
LAD		 1913 irk = hci_find_irk_by_addr(hdev, &params->addr, params->addr_type);
1914 if (!irk)
1915 return 0;
1916
1917 /* Check if the IK has _not_ been programmed yet. */
1918 entry = hci_bdaddr_list_lookup_with_irk(&hdev->le_resolv_list,
1919 &params->addr,
1920 params->addr_type);
1921 if (entry)
1922 return 0;
1923
1924 cp.bdaddr_type = params->addr_type;
1925 bacpy(&cp.bdaddr, &params->addr);
1926 memcpy(cp.peer_irk, irk->val, 16);
1927
0900b1c6
LAD		 1928 /* Default privacy mode is always Network */
1929 params->privacy_mode = HCI_NETWORK_PRIVACY;
1930
cf75ad8b 1931done:
e8907f76
LAD		 1932 if (hci_dev_test_flag(hdev, HCI_PRIVACY))
1933 memcpy(cp.local_irk, hdev->irk, 16);
1934 else
1935 memset(cp.local_irk, 0, 16);
1936
1937 return __hci_cmd_sync_status(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST,
1938 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1939}
1940
853b70b5
LAD		 1941/* Set Device Privacy Mode. */
1942static int hci_le_set_privacy_mode_sync(struct hci_dev *hdev,
1943 struct hci_conn_params *params)
1944{
1945 struct hci_cp_le_set_privacy_mode cp;
1946 struct smp_irk *irk;
1947
1948 /* If device privacy mode has already been set there is nothing to do */
1949 if (params->privacy_mode == HCI_DEVICE_PRIVACY)
1950 return 0;
1951
1952 /* Check if HCI_CONN_FLAG_DEVICE_PRIVACY has been set as it also
1953 * indicates that LL Privacy has been enabled and
1954 * HCI_OP_LE_SET_PRIVACY_MODE is supported.
1955 */
e1cff700 1956 if (!(params->flags & HCI_CONN_FLAG_DEVICE_PRIVACY))
853b70b5
LAD		 1957 return 0;
1958
1959 irk = hci_find_irk_by_addr(hdev, &params->addr, params->addr_type);
1960 if (!irk)
1961 return 0;
1962
1963 memset(&cp, 0, sizeof(cp));
1964 cp.bdaddr_type = irk->addr_type;
1965 bacpy(&cp.bdaddr, &irk->bdaddr);
1966 cp.mode = HCI_DEVICE_PRIVACY;
1967
1968 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PRIVACY_MODE,
1969 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1970}
1971
e8907f76 1972/* Adds connection to allow list if needed, if the device uses RPA (has IRK)
853b70b5
LAD		 1973 * this attempts to program the device in the resolving list as well and
1974 * properly set the privacy mode.
e8907f76
LAD		 1975 */
1976static int hci_le_add_accept_list_sync(struct hci_dev *hdev,
1977 struct hci_conn_params *params,
ad383c2c 1978 u8 *num_entries)
e8907f76
LAD		 1979{
1980 struct hci_cp_le_add_to_accept_list cp;
1981 int err;
1982
3b420553
LAD		 1983 /* During suspend, only wakeable devices can be in acceptlist */
1984 if (hdev->suspended &&
e1cff700 1985 !(params->flags & HCI_CONN_FLAG_REMOTE_WAKEUP))
3b420553
LAD		 1986 return 0;
1987
e8907f76
LAD		 1988 /* Select filter policy to accept all advertising */
1989 if (*num_entries >= hdev->le_accept_list_size)
1990 return -ENOSPC;
1991
1992 /* Accept list can not be used with RPAs */
ad383c2c 1993 if (!use_ll_privacy(hdev) &&
3b420553 1994 hci_find_irk_by_addr(hdev, &params->addr, params->addr_type))
e8907f76 1995 return -EINVAL;
e8907f76 1996
ad383c2c
LAD		 1997 /* Attempt to program the device in the resolving list first to avoid
1998 * having to rollback in case it fails since the resolving list is
1999 * dynamic it can probably be smaller than the accept list.
2000 */
2001 err = hci_le_add_resolve_list_sync(hdev, params);
2002 if (err) {
2003 bt_dev_err(hdev, "Unable to add to resolve list: %d", err);
2004 return err;
2005 }
2006
853b70b5
LAD		 2007 /* Set Privacy Mode */
2008 err = hci_le_set_privacy_mode_sync(hdev, params);
2009 if (err) {
2010 bt_dev_err(hdev, "Unable to set privacy mode: %d", err);
2011 return err;
2012 }
2013
2014 /* Check if already in accept list */
2015 if (hci_bdaddr_list_lookup(&hdev->le_accept_list, &params->addr,
2016 params->addr_type))
2017 return 0;
2018
e8907f76
LAD		 2019 *num_entries += 1;
2020 cp.bdaddr_type = params->addr_type;
2021 bacpy(&cp.bdaddr, &params->addr);
2022
2023 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST,
2024 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2025 if (err) {
2026 bt_dev_err(hdev, "Unable to add to allow list: %d", err);
ad383c2c
LAD		 2027 /* Rollback the device from the resolving list */
2028 hci_le_del_resolve_list_sync(hdev, &cp.bdaddr, cp.bdaddr_type);
e8907f76
LAD		 2029 return err;
2030 }
2031
2032 bt_dev_dbg(hdev, "Add %pMR (0x%x) to allow list", &cp.bdaddr,
2033 cp.bdaddr_type);
2034
ad383c2c
LAD		 2035 return 0;
2036}
2037
182ee45d 2038/* This function disables/pause all advertising instances */
ad383c2c
LAD		 2039static int hci_pause_advertising_sync(struct hci_dev *hdev)
2040{
2041 int err;
182ee45d 2042 int old_state;
ad383c2c 2043
9446bdde
LAD		 2044 /* If already been paused there is nothing to do. */
2045 if (hdev->advertising_paused)
ad383c2c
LAD		 2046 return 0;
2047
182ee45d
LAD		 2048 bt_dev_dbg(hdev, "Pausing directed advertising");
2049
2050 /* Stop directed advertising */
2051 old_state = hci_dev_test_flag(hdev, HCI_ADVERTISING);
2052 if (old_state) {
2053 /* When discoverable timeout triggers, then just make sure
2054 * the limited discoverable flag is cleared. Even in the case
2055 * of a timeout triggered from general discoverable, it is
2056 * safe to unconditionally clear the flag.
2057 */
2058 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
2059 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
2060 hdev->discov_timeout = 0;
2061 }
2062
ad383c2c
LAD		 2063 bt_dev_dbg(hdev, "Pausing advertising instances");
2064
2065 /* Call to disable any advertisements active on the controller.
2066 * This will succeed even if no advertisements are configured.
2067 */
2068 err = hci_disable_advertising_sync(hdev);
2069 if (err)
2070 return err;
2071
2072 /* If we are using software rotation, pause the loop */
2073 if (!ext_adv_capable(hdev))
2074 cancel_adv_timeout(hdev);
2075
2076 hdev->advertising_paused = true;
182ee45d 2077 hdev->advertising_old_state = old_state;
ad383c2c
LAD		 2078
2079 return 0;
e8907f76
LAD		 2080}
2081
182ee45d 2082/* This function enables all user advertising instances */
ad383c2c
LAD		 2083static int hci_resume_advertising_sync(struct hci_dev *hdev)
2084{
2085 struct adv_info *adv, *tmp;
2086 int err;
2087
2088 /* If advertising has not been paused there is nothing to do. */
2089 if (!hdev->advertising_paused)
2090 return 0;
2091
182ee45d
LAD		 2092 /* Resume directed advertising */
2093 hdev->advertising_paused = false;
2094 if (hdev->advertising_old_state) {
2095 hci_dev_set_flag(hdev, HCI_ADVERTISING);
182ee45d
LAD		 2096 hdev->advertising_old_state = 0;
2097 }
2098
ad383c2c
LAD		 2099 bt_dev_dbg(hdev, "Resuming advertising instances");
2100
2101 if (ext_adv_capable(hdev)) {
2102 /* Call for each tracked instance to be re-enabled */
2103 list_for_each_entry_safe(adv, tmp, &hdev->adv_instances, list) {
2104 err = hci_enable_ext_advertising_sync(hdev,
2105 adv->instance);
2106 if (!err)
2107 continue;
2108
2109 /* If the instance cannot be resumed remove it */
2110 hci_remove_ext_adv_instance_sync(hdev, adv->instance,
2111 NULL);
2112 }
2113 } else {
2114 /* Schedule for most recent instance to be restarted and begin
2115 * the software rotation loop
2116 */
2117 err = hci_schedule_adv_instance_sync(hdev,
2118 hdev->cur_adv_instance,
2119 true);
2120 }
2121
2122 hdev->advertising_paused = false;
2123
2124 return err;
2125}
2126
f892244b
BG		 2127struct sk_buff *hci_read_local_oob_data_sync(struct hci_dev *hdev,
2128 bool extended, struct sock *sk)
2129{
2130 u16 opcode = extended ? HCI_OP_READ_LOCAL_OOB_EXT_DATA :
2131 HCI_OP_READ_LOCAL_OOB_DATA;
2132
2133 return __hci_cmd_sync_sk(hdev, opcode, 0, NULL, 0, HCI_CMD_TIMEOUT, sk);
2134}
2135
ad383c2c
LAD		 2136/* Device must not be scanning when updating the accept list.
2137 *
2138 * Update is done using the following sequence:
2139 *
2140 * use_ll_privacy((Disable Advertising) -> Disable Resolving List) ->
2141 * Remove Devices From Accept List ->
2142 * (has IRK && use_ll_privacy(Remove Devices From Resolving List))->
2143 * Add Devices to Accept List ->
2144 * (has IRK && use_ll_privacy(Remove Devices From Resolving List)) ->
2145 * use_ll_privacy(Enable Resolving List -> (Enable Advertising)) ->
2146 * Enable Scanning
2147 *
2148 * In case of failure advertising shall be restored to its original state and
2149 * return would disable accept list since either accept or resolving list could
2150 * not be programmed.
2151 *
2152 */
e8907f76
LAD		 2153static u8 hci_update_accept_list_sync(struct hci_dev *hdev)
2154{
2155 struct hci_conn_params *params;
2156 struct bdaddr_list *b, *t;
2157 u8 num_entries = 0;
2158 bool pend_conn, pend_report;
80740ebb 2159 u8 filter_policy;
ad383c2c
LAD		 2160 int err;
2161
2162 /* Pause advertising if resolving list can be used as controllers are
2163 * cannot accept resolving list modifications while advertising.
e8907f76 2164 */
ad383c2c
LAD		 2165 if (use_ll_privacy(hdev)) {
2166 err = hci_pause_advertising_sync(hdev);
2167 if (err) {
2168 bt_dev_err(hdev, "pause advertising failed: %d", err);
2169 return 0x00;
2170 }
2171 }
e8907f76 2172
ad383c2c
LAD		 2173 /* Disable address resolution while reprogramming accept list since
2174 * devices that do have an IRK will be programmed in the resolving list
2175 * when LL Privacy is enabled.
2176 */
2177 err = hci_le_set_addr_resolution_enable_sync(hdev, 0x00);
2178 if (err) {
2179 bt_dev_err(hdev, "Unable to disable LL privacy: %d", err);
2180 goto done;
2181 }
e8907f76
LAD		 2182
2183 /* Go through the current accept list programmed into the
6828b583
LAD		 2184 * controller one by one and check if that address is connected or is
2185 * still in the list of pending connections or list of devices to
e8907f76
LAD		 2186 * report. If not present in either list, then remove it from
2187 * the controller.
2188 */
2189 list_for_each_entry_safe(b, t, &hdev->le_accept_list, list) {
6828b583
LAD		 2190 if (hci_conn_hash_lookup_le(hdev, &b->bdaddr, b->bdaddr_type))
2191 continue;
2192
e8907f76
LAD		 2193 pend_conn = hci_pend_le_action_lookup(&hdev->pend_le_conns,
2194 &b->bdaddr,
2195 b->bdaddr_type);
2196 pend_report = hci_pend_le_action_lookup(&hdev->pend_le_reports,
2197 &b->bdaddr,
2198 b->bdaddr_type);
2199
2200 /* If the device is not likely to connect or report,
2201 * remove it from the acceptlist.
2202 */
2203 if (!pend_conn && !pend_report) {
2204 hci_le_del_accept_list_sync(hdev, &b->bdaddr,
2205 b->bdaddr_type);
2206 continue;
2207 }
2208
e8907f76
LAD		 2209 num_entries++;
2210 }
2211
2212 /* Since all no longer valid accept list entries have been
2213 * removed, walk through the list of pending connections
2214 * and ensure that any new device gets programmed into
2215 * the controller.
2216 *
2217 * If the list of the devices is larger than the list of
2218 * available accept list entries in the controller, then
2219 * just abort and return filer policy value to not use the
2220 * accept list.
2221 */
2222 list_for_each_entry(params, &hdev->pend_le_conns, action) {
ad383c2c
LAD		 2223 err = hci_le_add_accept_list_sync(hdev, params, &num_entries);
2224 if (err)
2225 goto done;
e8907f76
LAD		 2226 }
2227
2228 /* After adding all new pending connections, walk through
2229 * the list of pending reports and also add these to the
2230 * accept list if there is still space. Abort if space runs out.
2231 */
2232 list_for_each_entry(params, &hdev->pend_le_reports, action) {
ad383c2c
LAD		 2233 err = hci_le_add_accept_list_sync(hdev, params, &num_entries);
2234 if (err)
2235 goto done;
e8907f76
LAD		 2236 }
2237
2238 /* Use the allowlist unless the following conditions are all true:
2239 * - We are not currently suspending
2240 * - There are 1 or more ADV monitors registered and it's not offloaded
2241 * - Interleaved scanning is not currently using the allowlist
2242 */
2243 if (!idr_is_empty(&hdev->adv_monitors_idr) && !hdev->suspended &&
2244 hci_get_adv_monitor_offload_ext(hdev) == HCI_ADV_MONITOR_EXT_NONE &&
2245 hdev->interleave_scan_state != INTERLEAVE_SCAN_ALLOWLIST)
ad383c2c
LAD		 2246 err = -EINVAL;
2247
2248done:
80740ebb
LAD		 2249 filter_policy = err ? 0x00 : 0x01;
2250
ad383c2c
LAD		 2251 /* Enable address resolution when LL Privacy is enabled. */
2252 err = hci_le_set_addr_resolution_enable_sync(hdev, 0x01);
2253 if (err)
2254 bt_dev_err(hdev, "Unable to enable LL privacy: %d", err);
2255
2256 /* Resume advertising if it was paused */
2257 if (use_ll_privacy(hdev))
2258 hci_resume_advertising_sync(hdev);
e8907f76
LAD		 2259
2260 /* Select filter policy to use accept list */
80740ebb 2261 return filter_policy;
e8907f76
LAD		 2262}
2263
2264/* Returns true if an le connection is in the scanning state */
2265static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
2266{
2267 struct hci_conn_hash *h = &hdev->conn_hash;
2268 struct hci_conn *c;
2269
2270 rcu_read_lock();
2271
2272 list_for_each_entry_rcu(c, &h->list, list) {
2273 if (c->type == LE_LINK && c->state == BT_CONNECT &&
2274 test_bit(HCI_CONN_SCANNING, &c->flags)) {
2275 rcu_read_unlock();
2276 return true;
2277 }
2278 }
2279
2280 rcu_read_unlock();
2281
2282 return false;
2283}
2284
2285static int hci_le_set_ext_scan_param_sync(struct hci_dev *hdev, u8 type,
2286 u16 interval, u16 window,
2287 u8 own_addr_type, u8 filter_policy)
2288{
2289 struct hci_cp_le_set_ext_scan_params *cp;
2290 struct hci_cp_le_scan_phy_params *phy;
2291 u8 data[sizeof(*cp) + sizeof(*phy) * 2];
2292 u8 num_phy = 0;
2293
2294 cp = (void *)data;
2295 phy = (void *)cp->data;
2296
2297 memset(data, 0, sizeof(data));
2298
2299 cp->own_addr_type = own_addr_type;
2300 cp->filter_policy = filter_policy;
2301
2302 if (scan_1m(hdev) || scan_2m(hdev)) {
2303 cp->scanning_phys |= LE_SCAN_PHY_1M;
2304
2305 phy->type = type;
2306 phy->interval = cpu_to_le16(interval);
2307 phy->window = cpu_to_le16(window);
2308
2309 num_phy++;
2310 phy++;
2311 }
2312
2313 if (scan_coded(hdev)) {
2314 cp->scanning_phys |= LE_SCAN_PHY_CODED;
2315
2316 phy->type = type;
2317 phy->interval = cpu_to_le16(interval);
2318 phy->window = cpu_to_le16(window);
2319
2320 num_phy++;
2321 phy++;
2322 }
2323
2324 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS,
2325 sizeof(*cp) + sizeof(*phy) * num_phy,
2326 data, HCI_CMD_TIMEOUT);
2327}
2328
2329static int hci_le_set_scan_param_sync(struct hci_dev *hdev, u8 type,
2330 u16 interval, u16 window,
2331 u8 own_addr_type, u8 filter_policy)
2332{
2333 struct hci_cp_le_set_scan_param cp;
2334
2335 if (use_ext_scan(hdev))
2336 return hci_le_set_ext_scan_param_sync(hdev, type, interval,
2337 window, own_addr_type,
2338 filter_policy);
2339
2340 memset(&cp, 0, sizeof(cp));
2341 cp.type = type;
2342 cp.interval = cpu_to_le16(interval);
2343 cp.window = cpu_to_le16(window);
2344 cp.own_address_type = own_addr_type;
2345 cp.filter_policy = filter_policy;
2346
2347 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_PARAM,
2348 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2349}
2350
2351static int hci_start_scan_sync(struct hci_dev *hdev, u8 type, u16 interval,
abfeea47
LAD		 2352 u16 window, u8 own_addr_type, u8 filter_policy,
2353 u8 filter_dup)
e8907f76
LAD		 2354{
2355 int err;
2356
2357 if (hdev->scanning_paused) {
2358 bt_dev_dbg(hdev, "Scanning is paused for suspend");
2359 return 0;
2360 }
2361
e8907f76
LAD		 2362 err = hci_le_set_scan_param_sync(hdev, type, interval, window,
2363 own_addr_type, filter_policy);
2364 if (err)
2365 return err;
2366
abfeea47 2367 return hci_le_set_scan_enable_sync(hdev, LE_SCAN_ENABLE, filter_dup);
e8907f76
LAD		 2368}
2369
27592ca1 2370static int hci_passive_scan_sync(struct hci_dev *hdev)
e8907f76
LAD		 2371{
2372 u8 own_addr_type;
2373 u8 filter_policy;
2374 u16 window, interval;
ad383c2c 2375 int err;
e8907f76
LAD		 2376
2377 if (hdev->scanning_paused) {
2378 bt_dev_dbg(hdev, "Scanning is paused for suspend");
2379 return 0;
2380 }
2381
ad383c2c
LAD		 2382 err = hci_scan_disable_sync(hdev);
2383 if (err) {
2384 bt_dev_err(hdev, "disable scanning failed: %d", err);
2385 return err;
2386 }
2387
e8907f76
LAD		 2388 /* Set require_privacy to false since no SCAN_REQ are send
2389 * during passive scanning. Not using an non-resolvable address
2390 * here is important so that peer devices using direct
2391 * advertising with our address will be correctly reported
2392 * by the controller.
2393 */
2394 if (hci_update_random_address_sync(hdev, false, scan_use_rpa(hdev),
2395 &own_addr_type))
2396 return 0;
2397
2398 if (hdev->enable_advmon_interleave_scan &&
2399 hci_update_interleaved_scan_sync(hdev))
2400 return 0;
2401
2402 bt_dev_dbg(hdev, "interleave state %d", hdev->interleave_scan_state);
ad383c2c 2403
e8907f76
LAD		 2404 /* Adding or removing entries from the accept list must
2405 * happen before enabling scanning. The controller does
2406 * not allow accept list modification while scanning.
2407 */
2408 filter_policy = hci_update_accept_list_sync(hdev);
2409
2410 /* When the controller is using random resolvable addresses and
2411 * with that having LE privacy enabled, then controllers with
2412 * Extended Scanner Filter Policies support can now enable support
2413 * for handling directed advertising.
2414 *
2415 * So instead of using filter polices 0x00 (no acceptlist)
2416 * and 0x01 (acceptlist enabled) use the new filter policies
2417 * 0x02 (no acceptlist) and 0x03 (acceptlist enabled).
2418 */
2419 if (hci_dev_test_flag(hdev, HCI_PRIVACY) &&
2420 (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY))
2421 filter_policy |= 0x02;
2422
2423 if (hdev->suspended) {
2424 window = hdev->le_scan_window_suspend;
2425 interval = hdev->le_scan_int_suspend;
e8907f76
LAD		 2426 } else if (hci_is_le_conn_scanning(hdev)) {
2427 window = hdev->le_scan_window_connect;
2428 interval = hdev->le_scan_int_connect;
2429 } else if (hci_is_adv_monitoring(hdev)) {
2430 window = hdev->le_scan_window_adv_monitor;
2431 interval = hdev->le_scan_int_adv_monitor;
2432 } else {
2433 window = hdev->le_scan_window;
2434 interval = hdev->le_scan_interval;
2435 }
2436
2437 bt_dev_dbg(hdev, "LE passive scan with acceptlist = %d", filter_policy);
2438
2439 return hci_start_scan_sync(hdev, LE_SCAN_PASSIVE, interval, window,
abfeea47
LAD		 2440 own_addr_type, filter_policy,
2441 LE_SCAN_FILTER_DUP_ENABLE);
e8907f76
LAD		 2442}
2443
2444/* This function controls the passive scanning based on hdev->pend_le_conns
2445 * list. If there are pending LE connection we start the background scanning,
ad383c2c
LAD		 2446 * otherwise we stop it in the following sequence:
2447 *
2448 * If there are devices to scan:
2449 *
2450 * Disable Scanning -> Update Accept List ->
2451 * use_ll_privacy((Disable Advertising) -> Disable Resolving List ->
2452 * Update Resolving List -> Enable Resolving List -> (Enable Advertising)) ->
2453 * Enable Scanning
2454 *
2455 * Otherwise:
2456 *
2457 * Disable Scanning
e8907f76
LAD		 2458 */
2459int hci_update_passive_scan_sync(struct hci_dev *hdev)
2460{
2461 int err;
2462
2463 if (!test_bit(HCI_UP, &hdev->flags) ||
2464 test_bit(HCI_INIT, &hdev->flags) ||
2465 hci_dev_test_flag(hdev, HCI_SETUP) ||
2466 hci_dev_test_flag(hdev, HCI_CONFIG) ||
2467 hci_dev_test_flag(hdev, HCI_AUTO_OFF) ||
2468 hci_dev_test_flag(hdev, HCI_UNREGISTER))
2469 return 0;
2470
2471 /* No point in doing scanning if LE support hasn't been enabled */
2472 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
2473 return 0;
2474
2475 /* If discovery is active don't interfere with it */
2476 if (hdev->discovery.state != DISCOVERY_STOPPED)
2477 return 0;
2478
2479 /* Reset RSSI and UUID filters when starting background scanning
2480 * since these filters are meant for service discovery only.
2481 *
2482 * The Start Discovery and Start Service Discovery operations
2483 * ensure to set proper values for RSSI threshold and UUID
2484 * filter list. So it is safe to just reset them here.
2485 */
2486 hci_discovery_filter_clear(hdev);
2487
2488 bt_dev_dbg(hdev, "ADV monitoring is %s",
2489 hci_is_adv_monitoring(hdev) ? "on" : "off");
2490
2491 if (list_empty(&hdev->pend_le_conns) &&
2492 list_empty(&hdev->pend_le_reports) &&
eca0ae4a
LAD		 2493 !hci_is_adv_monitoring(hdev) &&
2494 !hci_dev_test_flag(hdev, HCI_PA_SYNC)) {
e8907f76
LAD		 2495 /* If there is no pending LE connections or devices
2496 * to be scanned for or no ADV monitors, we should stop the
2497 * background scanning.
2498 */
2499
2500 bt_dev_dbg(hdev, "stopping background scanning");
2501
ad383c2c 2502 err = hci_scan_disable_sync(hdev);
e8907f76
LAD		 2503 if (err)
2504 bt_dev_err(hdev, "stop background scanning failed: %d",
2505 err);
2506 } else {
2507 /* If there is at least one pending LE connection, we should
2508 * keep the background scan running.
2509 */
2510
2511 /* If controller is connecting, we should not start scanning
2512 * since some controllers are not able to scan and connect at
2513 * the same time.
2514 */
2515 if (hci_lookup_le_connect(hdev))
2516 return 0;
2517
e8907f76
LAD		 2518 bt_dev_dbg(hdev, "start background scanning");
2519
2520 err = hci_passive_scan_sync(hdev);
2521 if (err)
2522 bt_dev_err(hdev, "start background scanning failed: %d",
2523 err);
2524 }
2525
2526 return err;
2527}
ad383c2c 2528
bb876725
BG		 2529static int update_scan_sync(struct hci_dev *hdev, void *data)
2530{
2531 return hci_update_scan_sync(hdev);
2532}
2533
2534int hci_update_scan(struct hci_dev *hdev)
2535{
2536 return hci_cmd_sync_queue(hdev, update_scan_sync, NULL, NULL);
2537}
2538
ad383c2c
LAD		 2539static int update_passive_scan_sync(struct hci_dev *hdev, void *data)
2540{
2541 return hci_update_passive_scan_sync(hdev);
2542}
2543
2544int hci_update_passive_scan(struct hci_dev *hdev)
2545{
5bee2fd6
LAD		 2546 /* Only queue if it would have any effect */
2547 if (!test_bit(HCI_UP, &hdev->flags) ||
2548 test_bit(HCI_INIT, &hdev->flags) ||
2549 hci_dev_test_flag(hdev, HCI_SETUP) ||
2550 hci_dev_test_flag(hdev, HCI_CONFIG) ||
2551 hci_dev_test_flag(hdev, HCI_AUTO_OFF) ||
2552 hci_dev_test_flag(hdev, HCI_UNREGISTER))
2553 return 0;
2554
ad383c2c
LAD		 2555 return hci_cmd_sync_queue(hdev, update_passive_scan_sync, NULL, NULL);
2556}
cf75ad8b 2557
2f2eb0c9 2558int hci_write_sc_support_sync(struct hci_dev *hdev, u8 val)
cf75ad8b 2559{
2f2eb0c9
BG		 2560 int err;
2561
cf75ad8b
LAD		 2562 if (!bredr_sc_enabled(hdev) || lmp_host_sc_capable(hdev))
2563 return 0;
2564
2f2eb0c9 2565 err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SC_SUPPORT,
cf75ad8b 2566 sizeof(val), &val, HCI_CMD_TIMEOUT);
2f2eb0c9
BG		 2567
2568 if (!err) {
2569 if (val) {
2570 hdev->features[1][0] |= LMP_HOST_SC;
2571 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
2572 } else {
2573 hdev->features[1][0] &= ~LMP_HOST_SC;
2574 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
2575 }
2576 }
2577
2578 return err;
cf75ad8b
LAD		 2579}
2580
3244845c 2581int hci_write_ssp_mode_sync(struct hci_dev *hdev, u8 mode)
cf75ad8b
LAD		 2582{
2583 int err;
2584
2585 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED) ||
2586 lmp_host_ssp_capable(hdev))
2587 return 0;
2588
3244845c
BG		 2589 if (!mode && hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS)) {
2590 __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE,
2591 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
2592 }
2593
cf75ad8b
LAD		 2594 err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_MODE,
2595 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
2596 if (err)
2597 return err;
2598
2599 return hci_write_sc_support_sync(hdev, 0x01);
2600}
2601
d81a494c 2602int hci_write_le_host_supported_sync(struct hci_dev *hdev, u8 le, u8 simul)
cf75ad8b
LAD		 2603{
2604 struct hci_cp_write_le_host_supported cp;
2605
2606 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) ||
2607 !lmp_bredr_capable(hdev))
2608 return 0;
2609
2610 /* Check first if we already have the right host state
2611 * (host features set)
2612 */
2613 if (le == lmp_host_le_capable(hdev) &&
2614 simul == lmp_host_le_br_capable(hdev))
2615 return 0;
2616
2617 memset(&cp, 0, sizeof(cp));
2618
2619 cp.le = le;
2620 cp.simul = simul;
2621
2622 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED,
2623 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2624}
2625
2626static int hci_powered_update_adv_sync(struct hci_dev *hdev)
2627{
2628 struct adv_info *adv, *tmp;
2629 int err;
2630
2631 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
2632 return 0;
2633
2634 /* If RPA Resolution has not been enable yet it means the
2635 * resolving list is empty and we should attempt to program the
2636 * local IRK in order to support using own_addr_type
2637 * ADDR_LE_DEV_RANDOM_RESOLVED (0x03).
2638 */
2639 if (!hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION)) {
2640 hci_le_add_resolve_list_sync(hdev, NULL);
2641 hci_le_set_addr_resolution_enable_sync(hdev, 0x01);
2642 }
2643
2644 /* Make sure the controller has a good default for
2645 * advertising data. This also applies to the case
2646 * where BR/EDR was toggled during the AUTO_OFF phase.
2647 */
2648 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
2649 list_empty(&hdev->adv_instances)) {
2650 if (ext_adv_capable(hdev)) {
2651 err = hci_setup_ext_adv_instance_sync(hdev, 0x00);
2652 if (!err)
2653 hci_update_scan_rsp_data_sync(hdev, 0x00);
2654 } else {
2655 err = hci_update_adv_data_sync(hdev, 0x00);
2656 if (!err)
2657 hci_update_scan_rsp_data_sync(hdev, 0x00);
2658 }
2659
2660 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
2661 hci_enable_advertising_sync(hdev);
2662 }
2663
2664 /* Call for each tracked instance to be scheduled */
2665 list_for_each_entry_safe(adv, tmp, &hdev->adv_instances, list)
2666 hci_schedule_adv_instance_sync(hdev, adv->instance, true);
2667
2668 return 0;
2669}
2670
2671static int hci_write_auth_enable_sync(struct hci_dev *hdev)
2672{
2673 u8 link_sec;
2674
2675 link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY);
2676 if (link_sec == test_bit(HCI_AUTH, &hdev->flags))
2677 return 0;
2678
2679 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_AUTH_ENABLE,
2680 sizeof(link_sec), &link_sec,
2681 HCI_CMD_TIMEOUT);
2682}
2683
353a0249 2684int hci_write_fast_connectable_sync(struct hci_dev *hdev, bool enable)
cf75ad8b
LAD		 2685{
2686 struct hci_cp_write_page_scan_activity cp;
2687 u8 type;
2688 int err = 0;
2689
2690 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
2691 return 0;
2692
2693 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
2694 return 0;
2695
2696 memset(&cp, 0, sizeof(cp));
2697
2698 if (enable) {
2699 type = PAGE_SCAN_TYPE_INTERLACED;
2700
2701 /* 160 msec page scan interval */
2702 cp.interval = cpu_to_le16(0x0100);
2703 } else {
2704 type = hdev->def_page_scan_type;
2705 cp.interval = cpu_to_le16(hdev->def_page_scan_int);
2706 }
2707
2708 cp.window = cpu_to_le16(hdev->def_page_scan_window);
2709
2710 if (__cpu_to_le16(hdev->page_scan_interval) != cp.interval ||
2711 __cpu_to_le16(hdev->page_scan_window) != cp.window) {
2712 err = __hci_cmd_sync_status(hdev,
2713 HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
2714 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2715 if (err)
2716 return err;
2717 }
2718
2719 if (hdev->page_scan_type != type)
2720 err = __hci_cmd_sync_status(hdev,
2721 HCI_OP_WRITE_PAGE_SCAN_TYPE,
2722 sizeof(type), &type,
2723 HCI_CMD_TIMEOUT);
2724
2725 return err;
2726}
2727
2728static bool disconnected_accept_list_entries(struct hci_dev *hdev)
2729{
2730 struct bdaddr_list *b;
2731
2732 list_for_each_entry(b, &hdev->accept_list, list) {
2733 struct hci_conn *conn;
2734
2735 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &b->bdaddr);
2736 if (!conn)
2737 return true;
2738
2739 if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG)
2740 return true;
2741 }
2742
2743 return false;
2744}
2745
2746static int hci_write_scan_enable_sync(struct hci_dev *hdev, u8 val)
2747{
2748 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SCAN_ENABLE,
2749 sizeof(val), &val,
2750 HCI_CMD_TIMEOUT);
2751}
2752
451d95a9 2753int hci_update_scan_sync(struct hci_dev *hdev)
cf75ad8b
LAD		 2754{
2755 u8 scan;
2756
2757 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
2758 return 0;
2759
2760 if (!hdev_is_powered(hdev))
2761 return 0;
2762
2763 if (mgmt_powering_down(hdev))
2764 return 0;
2765
2766 if (hdev->scanning_paused)
2767 return 0;
2768
2769 if (hci_dev_test_flag(hdev, HCI_CONNECTABLE) ||
2770 disconnected_accept_list_entries(hdev))
2771 scan = SCAN_PAGE;
2772 else
2773 scan = SCAN_DISABLED;
2774
2775 if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
2776 scan |= SCAN_INQUIRY;
2777
2778 if (test_bit(HCI_PSCAN, &hdev->flags) == !!(scan & SCAN_PAGE) &&
2779 test_bit(HCI_ISCAN, &hdev->flags) == !!(scan & SCAN_INQUIRY))
2780 return 0;
2781
2782 return hci_write_scan_enable_sync(hdev, scan);
2783}
2784
6f6ff38a 2785int hci_update_name_sync(struct hci_dev *hdev)
cf75ad8b
LAD		 2786{
2787 struct hci_cp_write_local_name cp;
2788
2789 memset(&cp, 0, sizeof(cp));
2790
2791 memcpy(cp.name, hdev->dev_name, sizeof(cp.name));
2792
2793 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LOCAL_NAME,
2794 sizeof(cp), &cp,
2795 HCI_CMD_TIMEOUT);
2796}
2797
2798/* This function perform powered update HCI command sequence after the HCI init
2799 * sequence which end up resetting all states, the sequence is as follows:
2800 *
2801 * HCI_SSP_ENABLED(Enable SSP)
2802 * HCI_LE_ENABLED(Enable LE)
2803 * HCI_LE_ENABLED(use_ll_privacy(Add local IRK to Resolving List) ->
2804 * Update adv data)
2805 * Enable Authentication
2806 * lmp_bredr_capable(Set Fast Connectable -> Set Scan Type -> Set Class ->
2807 * Set Name -> Set EIR)
2808 */
2809int hci_powered_update_sync(struct hci_dev *hdev)
2810{
2811 int err;
2812
2813 /* Register the available SMP channels (BR/EDR and LE) only when
2814 * successfully powering on the controller. This late
2815 * registration is required so that LE SMP can clearly decide if
2816 * the public address or static address is used.
2817 */
2818 smp_register(hdev);
2819
2820 err = hci_write_ssp_mode_sync(hdev, 0x01);
2821 if (err)
2822 return err;
2823
2824 err = hci_write_le_host_supported_sync(hdev, 0x01, 0x00);
2825 if (err)
2826 return err;
2827
2828 err = hci_powered_update_adv_sync(hdev);
2829 if (err)
2830 return err;
2831
2832 err = hci_write_auth_enable_sync(hdev);
2833 if (err)
2834 return err;
2835
2836 if (lmp_bredr_capable(hdev)) {
2837 if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE))
2838 hci_write_fast_connectable_sync(hdev, true);
2839 else
2840 hci_write_fast_connectable_sync(hdev, false);
2841 hci_update_scan_sync(hdev);
2842 hci_update_class_sync(hdev);
2843 hci_update_name_sync(hdev);
2844 hci_update_eir_sync(hdev);
2845 }
2846
2847 return 0;
2848}
2849
d0b13706
LAD		 2850/**
2851 * hci_dev_get_bd_addr_from_property - Get the Bluetooth Device Address
2852 * (BD_ADDR) for a HCI device from
2853 * a firmware node property.
2854 * @hdev: The HCI device
cf75ad8b 2855 *
d0b13706
LAD		 2856 * Search the firmware node for 'local-bd-address'.
2857 *
2858 * All-zero BD addresses are rejected, because those could be properties
2859 * that exist in the firmware tables, but were not updated by the firmware. For
2860 * example, the DTS could define 'local-bd-address', with zero BD addresses.
cf75ad8b 2861 */
d0b13706 2862static void hci_dev_get_bd_addr_from_property(struct hci_dev *hdev)
cf75ad8b 2863{
d0b13706
LAD		 2864 struct fwnode_handle *fwnode = dev_fwnode(hdev->dev.parent);
2865 bdaddr_t ba;
2866 int ret;
cf75ad8b 2867
d0b13706
LAD		 2868 ret = fwnode_property_read_u8_array(fwnode, "local-bd-address",
2869 (u8 *)&ba, sizeof(ba));
2870 if (ret < 0 || !bacmp(&ba, BDADDR_ANY))
2871 return;
cf75ad8b 2872
d0b13706
LAD		 2873 bacpy(&hdev->public_addr, &ba);
2874}
cf75ad8b 2875
d0b13706
LAD		 2876struct hci_init_stage {
2877 int (*func)(struct hci_dev *hdev);
2878};
cf75ad8b 2879
d0b13706
LAD		 2880/* Run init stage NULL terminated function table */
2881static int hci_init_stage_sync(struct hci_dev *hdev,
2882 const struct hci_init_stage *stage)
2883{
2884 size_t i;
cf75ad8b 2885
d0b13706
LAD		 2886 for (i = 0; stage[i].func; i++) {
2887 int err;
cf75ad8b 2888
d0b13706
LAD		 2889 err = stage[i].func(hdev);
2890 if (err)
2891 return err;
cf75ad8b
LAD		 2892 }
2893
2894 return 0;
2895}
2896
d0b13706
LAD		 2897/* Read Local Version */
2898static int hci_read_local_version_sync(struct hci_dev *hdev)
cf75ad8b 2899{
d0b13706
LAD		 2900 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_VERSION,
2901 0, NULL, HCI_CMD_TIMEOUT);
2902}
cf75ad8b 2903
d0b13706
LAD		 2904/* Read BD Address */
2905static int hci_read_bd_addr_sync(struct hci_dev *hdev)
2906{
2907 return __hci_cmd_sync_status(hdev, HCI_OP_READ_BD_ADDR,
2908 0, NULL, HCI_CMD_TIMEOUT);
2909}
cf75ad8b 2910
d0b13706
LAD		 2911#define HCI_INIT(_func) \
2912{ \
2913 .func = _func, \
cf75ad8b
LAD		 2914}
2915
d0b13706
LAD		 2916static const struct hci_init_stage hci_init0[] = {
2917 /* HCI_OP_READ_LOCAL_VERSION */
2918 HCI_INIT(hci_read_local_version_sync),
2919 /* HCI_OP_READ_BD_ADDR */
2920 HCI_INIT(hci_read_bd_addr_sync),
2921 {}
2922};
2923
2924int hci_reset_sync(struct hci_dev *hdev)
cf75ad8b 2925{
cf75ad8b
LAD		 2926 int err;
2927
d0b13706 2928 set_bit(HCI_RESET, &hdev->flags);
cf75ad8b 2929
d0b13706
LAD		 2930 err = __hci_cmd_sync_status(hdev, HCI_OP_RESET, 0, NULL,
2931 HCI_CMD_TIMEOUT);
2932 if (err)
2933 return err;
cf75ad8b 2934
d0b13706
LAD		 2935 return 0;
2936}
cf75ad8b 2937
d0b13706
LAD		 2938static int hci_init0_sync(struct hci_dev *hdev)
2939{
2940 int err;
cf75ad8b 2941
d0b13706
LAD		 2942 bt_dev_dbg(hdev, "");
2943
2944 /* Reset */
2945 if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) {
2946 err = hci_reset_sync(hdev);
cf75ad8b
LAD		 2947 if (err)
2948 return err;
2949 }
2950
d0b13706
LAD		 2951 return hci_init_stage_sync(hdev, hci_init0);
2952}
abfeea47 2953
d0b13706
LAD		 2954static int hci_unconf_init_sync(struct hci_dev *hdev)
2955{
2956 int err;
2957
2958 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
cf75ad8b
LAD		 2959 return 0;
2960
d0b13706
LAD		 2961 err = hci_init0_sync(hdev);
2962 if (err < 0)
2963 return err;
cf75ad8b 2964
d0b13706
LAD		 2965 if (hci_dev_test_flag(hdev, HCI_SETUP))
2966 hci_debugfs_create_basic(hdev);
cf75ad8b
LAD		 2967
2968 return 0;
2969}
2970
d0b13706
LAD		 2971/* Read Local Supported Features. */
2972static int hci_read_local_features_sync(struct hci_dev *hdev)
cf75ad8b 2973{
d0b13706
LAD		 2974 /* Not all AMP controllers support this command */
2975 if (hdev->dev_type == HCI_AMP && !(hdev->commands[14] & 0x20))
2976 return 0;
cf75ad8b 2977
d0b13706
LAD		 2978 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_FEATURES,
2979 0, NULL, HCI_CMD_TIMEOUT);
cf75ad8b
LAD		 2980}
2981
d0b13706
LAD		 2982/* BR Controller init stage 1 command sequence */
2983static const struct hci_init_stage br_init1[] = {
2984 /* HCI_OP_READ_LOCAL_FEATURES */
2985 HCI_INIT(hci_read_local_features_sync),
2986 /* HCI_OP_READ_LOCAL_VERSION */
2987 HCI_INIT(hci_read_local_version_sync),
2988 /* HCI_OP_READ_BD_ADDR */
2989 HCI_INIT(hci_read_bd_addr_sync),
2990 {}
2991};
2992
2993/* Read Local Commands */
2994static int hci_read_local_cmds_sync(struct hci_dev *hdev)
cf75ad8b 2995{
d0b13706
LAD		 2996 /* All Bluetooth 1.2 and later controllers should support the
2997 * HCI command for reading the local supported commands.
2998 *
2999 * Unfortunately some controllers indicate Bluetooth 1.2 support,
3000 * but do not have support for this command. If that is the case,
3001 * the driver can quirk the behavior and skip reading the local
3002 * supported commands.
3003 */
3004 if (hdev->hci_ver > BLUETOOTH_VER_1_1 &&
3005 !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks))
3006 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_COMMANDS,
3007 0, NULL, HCI_CMD_TIMEOUT);
cf75ad8b 3008
d0b13706 3009 return 0;
cf75ad8b
LAD		 3010}
3011
d0b13706
LAD		 3012/* Read Local AMP Info */
3013static int hci_read_local_amp_info_sync(struct hci_dev *hdev)
cf75ad8b 3014{
d0b13706
LAD		 3015 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_AMP_INFO,
3016 0, NULL, HCI_CMD_TIMEOUT);
cf75ad8b
LAD		 3017}
3018
d0b13706
LAD		 3019/* Read Data Blk size */
3020static int hci_read_data_block_size_sync(struct hci_dev *hdev)
cf75ad8b 3021{
d0b13706
LAD		 3022 return __hci_cmd_sync_status(hdev, HCI_OP_READ_DATA_BLOCK_SIZE,
3023 0, NULL, HCI_CMD_TIMEOUT);
3024}
cf75ad8b 3025
d0b13706
LAD		 3026/* Read Flow Control Mode */
3027static int hci_read_flow_control_mode_sync(struct hci_dev *hdev)
3028{
3029 return __hci_cmd_sync_status(hdev, HCI_OP_READ_FLOW_CONTROL_MODE,
3030 0, NULL, HCI_CMD_TIMEOUT);
3031}
cf75ad8b 3032
d0b13706
LAD		 3033/* Read Location Data */
3034static int hci_read_location_data_sync(struct hci_dev *hdev)
3035{
3036 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCATION_DATA,
3037 0, NULL, HCI_CMD_TIMEOUT);
cf75ad8b
LAD		 3038}
3039
d0b13706
LAD		 3040/* AMP Controller init stage 1 command sequence */
3041static const struct hci_init_stage amp_init1[] = {
3042 /* HCI_OP_READ_LOCAL_VERSION */
3043 HCI_INIT(hci_read_local_version_sync),
3044 /* HCI_OP_READ_LOCAL_COMMANDS */
3045 HCI_INIT(hci_read_local_cmds_sync),
3046 /* HCI_OP_READ_LOCAL_AMP_INFO */
3047 HCI_INIT(hci_read_local_amp_info_sync),
3048 /* HCI_OP_READ_DATA_BLOCK_SIZE */
3049 HCI_INIT(hci_read_data_block_size_sync),
3050 /* HCI_OP_READ_FLOW_CONTROL_MODE */
3051 HCI_INIT(hci_read_flow_control_mode_sync),
3052 /* HCI_OP_READ_LOCATION_DATA */
3053 HCI_INIT(hci_read_location_data_sync),
3054};
3055
3056static int hci_init1_sync(struct hci_dev *hdev)
cf75ad8b 3057{
d0b13706 3058 int err;
cf75ad8b 3059
d0b13706 3060 bt_dev_dbg(hdev, "");
cf75ad8b 3061
d0b13706
LAD		 3062 /* Reset */
3063 if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) {
3064 err = hci_reset_sync(hdev);
3065 if (err)
3066 return err;
3067 }
cf75ad8b 3068
d0b13706
LAD		 3069 switch (hdev->dev_type) {
3070 case HCI_PRIMARY:
3071 hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED;
3072 return hci_init_stage_sync(hdev, br_init1);
3073 case HCI_AMP:
3074 hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED;
3075 return hci_init_stage_sync(hdev, amp_init1);
3076 default:
3077 bt_dev_err(hdev, "Unknown device type %d", hdev->dev_type);
3078 break;
3079 }
3080
3081 return 0;
cf75ad8b
LAD		 3082}
3083
d0b13706
LAD		 3084/* AMP Controller init stage 2 command sequence */
3085static const struct hci_init_stage amp_init2[] = {
3086 /* HCI_OP_READ_LOCAL_FEATURES */
3087 HCI_INIT(hci_read_local_features_sync),
3088};
3089
3090/* Read Buffer Size (ACL mtu, max pkt, etc.) */
3091static int hci_read_buffer_size_sync(struct hci_dev *hdev)
cf75ad8b 3092{
26afbd82
LAD		 3093 /* Use Read LE Buffer Size V2 if supported */
3094 if (hdev->commands[41] & 0x20)
3095 return __hci_cmd_sync_status(hdev,
3096 HCI_OP_LE_READ_BUFFER_SIZE_V2,
3097 0, NULL, HCI_CMD_TIMEOUT);
3098
d0b13706
LAD		 3099 return __hci_cmd_sync_status(hdev, HCI_OP_READ_BUFFER_SIZE,
3100 0, NULL, HCI_CMD_TIMEOUT);
3101}
cf75ad8b 3102
d0b13706
LAD		 3103/* Read Class of Device */
3104static int hci_read_dev_class_sync(struct hci_dev *hdev)
3105{
3106 return __hci_cmd_sync_status(hdev, HCI_OP_READ_CLASS_OF_DEV,
3107 0, NULL, HCI_CMD_TIMEOUT);
3108}
cf75ad8b 3109
d0b13706
LAD		 3110/* Read Local Name */
3111static int hci_read_local_name_sync(struct hci_dev *hdev)
3112{
3113 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_NAME,
3114 0, NULL, HCI_CMD_TIMEOUT);
3115}
cf75ad8b 3116
d0b13706
LAD		 3117/* Read Voice Setting */
3118static int hci_read_voice_setting_sync(struct hci_dev *hdev)
3119{
3120 return __hci_cmd_sync_status(hdev, HCI_OP_READ_VOICE_SETTING,
3121 0, NULL, HCI_CMD_TIMEOUT);
cf75ad8b
LAD		 3122}
3123
d0b13706
LAD		 3124/* Read Number of Supported IAC */
3125static int hci_read_num_supported_iac_sync(struct hci_dev *hdev)
cf75ad8b 3126{
d0b13706
LAD		 3127 return __hci_cmd_sync_status(hdev, HCI_OP_READ_NUM_SUPPORTED_IAC,
3128 0, NULL, HCI_CMD_TIMEOUT);
3129}
cf75ad8b 3130
d0b13706
LAD		 3131/* Read Current IAC LAP */
3132static int hci_read_current_iac_lap_sync(struct hci_dev *hdev)
3133{
3134 return __hci_cmd_sync_status(hdev, HCI_OP_READ_CURRENT_IAC_LAP,
3135 0, NULL, HCI_CMD_TIMEOUT);
cf75ad8b
LAD		 3136}
3137
d0b13706
LAD		 3138static int hci_set_event_filter_sync(struct hci_dev *hdev, u8 flt_type,
3139 u8 cond_type, bdaddr_t *bdaddr,
3140 u8 auto_accept)
cf75ad8b 3141{
d0b13706 3142 struct hci_cp_set_event_filter cp;
cf75ad8b 3143
d0b13706 3144 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
cf75ad8b
LAD		 3145 return 0;
3146
0eaecfb2
IFM		 3147 if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks))
3148 return 0;
3149
d0b13706
LAD		 3150 memset(&cp, 0, sizeof(cp));
3151 cp.flt_type = flt_type;
cf75ad8b 3152
d0b13706
LAD		 3153 if (flt_type != HCI_FLT_CLEAR_ALL) {
3154 cp.cond_type = cond_type;
3155 bacpy(&cp.addr_conn_flt.bdaddr, bdaddr);
3156 cp.addr_conn_flt.auto_accept = auto_accept;
cf75ad8b
LAD		 3157 }
3158
d0b13706
LAD		 3159 return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_FLT,
3160 flt_type == HCI_FLT_CLEAR_ALL ?
3161 sizeof(cp.flt_type) : sizeof(cp), &cp,
3162 HCI_CMD_TIMEOUT);
cf75ad8b
LAD		 3163}
3164
d0b13706 3165static int hci_clear_event_filter_sync(struct hci_dev *hdev)
cf75ad8b 3166{
d0b13706
LAD		 3167 if (!hci_dev_test_flag(hdev, HCI_EVENT_FILTER_CONFIGURED))
3168 return 0;
3169
0eaecfb2
IFM		 3170 /* In theory the state machine should not reach here unless
3171 * a hci_set_event_filter_sync() call succeeds, but we do
3172 * the check both for parity and as a future reminder.
3173 */
3174 if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks))
3175 return 0;
3176
d0b13706
LAD		 3177 return hci_set_event_filter_sync(hdev, HCI_FLT_CLEAR_ALL, 0x00,
3178 BDADDR_ANY, 0x00);
3179}
3180
3181/* Connection accept timeout ~20 secs */
3182static int hci_write_ca_timeout_sync(struct hci_dev *hdev)
3183{
3184 __le16 param = cpu_to_le16(0x7d00);
3185
3186 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CA_TIMEOUT,
3187 sizeof(param), &param, HCI_CMD_TIMEOUT);
3188}
3189
3190/* BR Controller init stage 2 command sequence */
3191static const struct hci_init_stage br_init2[] = {
3192 /* HCI_OP_READ_BUFFER_SIZE */
3193 HCI_INIT(hci_read_buffer_size_sync),
3194 /* HCI_OP_READ_CLASS_OF_DEV */
3195 HCI_INIT(hci_read_dev_class_sync),
3196 /* HCI_OP_READ_LOCAL_NAME */
3197 HCI_INIT(hci_read_local_name_sync),
3198 /* HCI_OP_READ_VOICE_SETTING */
3199 HCI_INIT(hci_read_voice_setting_sync),
3200 /* HCI_OP_READ_NUM_SUPPORTED_IAC */
3201 HCI_INIT(hci_read_num_supported_iac_sync),
3202 /* HCI_OP_READ_CURRENT_IAC_LAP */
3203 HCI_INIT(hci_read_current_iac_lap_sync),
3204 /* HCI_OP_SET_EVENT_FLT */
3205 HCI_INIT(hci_clear_event_filter_sync),
3206 /* HCI_OP_WRITE_CA_TIMEOUT */
3207 HCI_INIT(hci_write_ca_timeout_sync),
3208 {}
3209};
3210
3211static int hci_write_ssp_mode_1_sync(struct hci_dev *hdev)
3212{
3213 u8 mode = 0x01;
3214
3215 if (!lmp_ssp_capable(hdev) || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
3216 return 0;
3217
3218 /* When SSP is available, then the host features page
3219 * should also be available as well. However some
3220 * controllers list the max_page as 0 as long as SSP
3221 * has not been enabled. To achieve proper debugging
3222 * output, force the minimum max_page to 1 at least.
3223 */
3224 hdev->max_page = 0x01;
3225
3226 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_MODE,
3227 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
3228}
3229
3230static int hci_write_eir_sync(struct hci_dev *hdev)
3231{
3232 struct hci_cp_write_eir cp;
3233
3234 if (!lmp_ssp_capable(hdev) || hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
3235 return 0;
3236
3237 memset(hdev->eir, 0, sizeof(hdev->eir));
3238 memset(&cp, 0, sizeof(cp));
3239
3240 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp,
3241 HCI_CMD_TIMEOUT);
3242}
3243
3244static int hci_write_inquiry_mode_sync(struct hci_dev *hdev)
3245{
3246 u8 mode;
3247
3248 if (!lmp_inq_rssi_capable(hdev) &&
3249 !test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks))
3250 return 0;
3251
3252 /* If Extended Inquiry Result events are supported, then
3253 * they are clearly preferred over Inquiry Result with RSSI
3254 * events.
3255 */
3256 mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01;
3257
3258 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_INQUIRY_MODE,
3259 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
3260}
3261
3262static int hci_read_inq_rsp_tx_power_sync(struct hci_dev *hdev)
3263{
3264 if (!lmp_inq_tx_pwr_capable(hdev))
3265 return 0;
3266
3267 return __hci_cmd_sync_status(hdev, HCI_OP_READ_INQ_RSP_TX_POWER,
3268 0, NULL, HCI_CMD_TIMEOUT);
3269}
3270
3271static int hci_read_local_ext_features_sync(struct hci_dev *hdev, u8 page)
3272{
3273 struct hci_cp_read_local_ext_features cp;
3274
3275 if (!lmp_ext_feat_capable(hdev))
3276 return 0;
3277
3278 memset(&cp, 0, sizeof(cp));
3279 cp.page = page;
3280
3281 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_EXT_FEATURES,
3282 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3283}
3284
3285static int hci_read_local_ext_features_1_sync(struct hci_dev *hdev)
3286{
3287 return hci_read_local_ext_features_sync(hdev, 0x01);
3288}
3289
3290/* HCI Controller init stage 2 command sequence */
3291static const struct hci_init_stage hci_init2[] = {
3292 /* HCI_OP_READ_LOCAL_COMMANDS */
3293 HCI_INIT(hci_read_local_cmds_sync),
3294 /* HCI_OP_WRITE_SSP_MODE */
3295 HCI_INIT(hci_write_ssp_mode_1_sync),
3296 /* HCI_OP_WRITE_EIR */
3297 HCI_INIT(hci_write_eir_sync),
3298 /* HCI_OP_WRITE_INQUIRY_MODE */
3299 HCI_INIT(hci_write_inquiry_mode_sync),
3300 /* HCI_OP_READ_INQ_RSP_TX_POWER */
3301 HCI_INIT(hci_read_inq_rsp_tx_power_sync),
3302 /* HCI_OP_READ_LOCAL_EXT_FEATURES */
3303 HCI_INIT(hci_read_local_ext_features_1_sync),
3304 /* HCI_OP_WRITE_AUTH_ENABLE */
3305 HCI_INIT(hci_write_auth_enable_sync),
3306 {}
3307};
3308
3309/* Read LE Buffer Size */
3310static int hci_le_read_buffer_size_sync(struct hci_dev *hdev)
3311{
3312 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_BUFFER_SIZE,
3313 0, NULL, HCI_CMD_TIMEOUT);
3314}
3315
3316/* Read LE Local Supported Features */
3317static int hci_le_read_local_features_sync(struct hci_dev *hdev)
3318{
3319 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_LOCAL_FEATURES,
3320 0, NULL, HCI_CMD_TIMEOUT);
3321}
3322
3323/* Read LE Supported States */
3324static int hci_le_read_supported_states_sync(struct hci_dev *hdev)
3325{
3326 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_SUPPORTED_STATES,
3327 0, NULL, HCI_CMD_TIMEOUT);
3328}
3329
3330/* LE Controller init stage 2 command sequence */
3331static const struct hci_init_stage le_init2[] = {
3332 /* HCI_OP_LE_READ_BUFFER_SIZE */
3333 HCI_INIT(hci_le_read_buffer_size_sync),
3334 /* HCI_OP_LE_READ_LOCAL_FEATURES */
3335 HCI_INIT(hci_le_read_local_features_sync),
3336 /* HCI_OP_LE_READ_SUPPORTED_STATES */
3337 HCI_INIT(hci_le_read_supported_states_sync),
3338 {}
3339};
3340
3341static int hci_init2_sync(struct hci_dev *hdev)
3342{
3343 int err;
3344
3345 bt_dev_dbg(hdev, "");
3346
3347 if (hdev->dev_type == HCI_AMP)
3348 return hci_init_stage_sync(hdev, amp_init2);
3349
26afbd82
LAD		 3350 err = hci_init_stage_sync(hdev, hci_init2);
3351 if (err)
3352 return err;
3353
d0b13706
LAD		 3354 if (lmp_bredr_capable(hdev)) {
3355 err = hci_init_stage_sync(hdev, br_init2);
3356 if (err)
3357 return err;
3358 } else {
3359 hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED);
3360 }
3361
3362 if (lmp_le_capable(hdev)) {
3363 err = hci_init_stage_sync(hdev, le_init2);
3364 if (err)
3365 return err;
3366 /* LE-only controllers have LE implicitly enabled */
3367 if (!lmp_bredr_capable(hdev))
3368 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
3369 }
3370
26afbd82 3371 return 0;
d0b13706
LAD		 3372}
3373
3374static int hci_set_event_mask_sync(struct hci_dev *hdev)
3375{
3376 /* The second byte is 0xff instead of 0x9f (two reserved bits
3377 * disabled) since a Broadcom 1.2 dongle doesn't respond to the
3378 * command otherwise.
3379 */
3380 u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 };
3381
3382 /* CSR 1.1 dongles does not accept any bitfield so don't try to set
3383 * any event mask for pre 1.2 devices.
3384 */
3385 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
3386 return 0;
3387
3388 if (lmp_bredr_capable(hdev)) {
3389 events[4] |= 0x01; /* Flow Specification Complete */
182ee45d
LAD		 3390
3391 /* Don't set Disconnect Complete when suspended as that
3392 * would wakeup the host when disconnecting due to
3393 * suspend.
3394 */
3395 if (hdev->suspended)
3396 events[0] &= 0xef;
d0b13706
LAD		 3397 } else {
3398 /* Use a different default for LE-only devices */
3399 memset(events, 0, sizeof(events));
3400 events[1] |= 0x20; /* Command Complete */
3401 events[1] |= 0x40; /* Command Status */
3402 events[1] |= 0x80; /* Hardware Error */
3403
3404 /* If the controller supports the Disconnect command, enable
3405 * the corresponding event. In addition enable packet flow
3406 * control related events.
3407 */
3408 if (hdev->commands[0] & 0x20) {
182ee45d
LAD		 3409 /* Don't set Disconnect Complete when suspended as that
3410 * would wakeup the host when disconnecting due to
3411 * suspend.
3412 */
3413 if (!hdev->suspended)
3414 events[0] |= 0x10; /* Disconnection Complete */
d0b13706
LAD		 3415 events[2] |= 0x04; /* Number of Completed Packets */
3416 events[3] |= 0x02; /* Data Buffer Overflow */
3417 }
3418
3419 /* If the controller supports the Read Remote Version
3420 * Information command, enable the corresponding event.
3421 */
3422 if (hdev->commands[2] & 0x80)
3423 events[1] |= 0x08; /* Read Remote Version Information
3424 * Complete
3425 */
3426
3427 if (hdev->le_features[0] & HCI_LE_ENCRYPTION) {
3428 events[0] |= 0x80; /* Encryption Change */
3429 events[5] |= 0x80; /* Encryption Key Refresh Complete */
3430 }
3431 }
3432
3433 if (lmp_inq_rssi_capable(hdev) ||
3434 test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks))
3435 events[4] |= 0x02; /* Inquiry Result with RSSI */
3436
3437 if (lmp_ext_feat_capable(hdev))
3438 events[4] |= 0x04; /* Read Remote Extended Features Complete */
3439
3440 if (lmp_esco_capable(hdev)) {
3441 events[5] |= 0x08; /* Synchronous Connection Complete */
3442 events[5] |= 0x10; /* Synchronous Connection Changed */
3443 }
3444
3445 if (lmp_sniffsubr_capable(hdev))
3446 events[5] |= 0x20; /* Sniff Subrating */
3447
3448 if (lmp_pause_enc_capable(hdev))
3449 events[5] |= 0x80; /* Encryption Key Refresh Complete */
3450
3451 if (lmp_ext_inq_capable(hdev))
3452 events[5] |= 0x40; /* Extended Inquiry Result */
3453
3454 if (lmp_no_flush_capable(hdev))
3455 events[7] |= 0x01; /* Enhanced Flush Complete */
3456
3457 if (lmp_lsto_capable(hdev))
3458 events[6] |= 0x80; /* Link Supervision Timeout Changed */
3459
3460 if (lmp_ssp_capable(hdev)) {
3461 events[6] |= 0x01; /* IO Capability Request */
3462 events[6] |= 0x02; /* IO Capability Response */
3463 events[6] |= 0x04; /* User Confirmation Request */
3464 events[6] |= 0x08; /* User Passkey Request */
3465 events[6] |= 0x10; /* Remote OOB Data Request */
3466 events[6] |= 0x20; /* Simple Pairing Complete */
3467 events[7] |= 0x04; /* User Passkey Notification */
3468 events[7] |= 0x08; /* Keypress Notification */
3469 events[7] |= 0x10; /* Remote Host Supported
3470 * Features Notification
3471 */
3472 }
3473
3474 if (lmp_le_capable(hdev))
3475 events[7] |= 0x20; /* LE Meta-Event */
3476
3477 return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_MASK,
3478 sizeof(events), events, HCI_CMD_TIMEOUT);
3479}
3480
3481static int hci_read_stored_link_key_sync(struct hci_dev *hdev)
3482{
3483 struct hci_cp_read_stored_link_key cp;
3484
3485 if (!(hdev->commands[6] & 0x20) ||
3486 test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks))
3487 return 0;
3488
3489 memset(&cp, 0, sizeof(cp));
3490 bacpy(&cp.bdaddr, BDADDR_ANY);
3491 cp.read_all = 0x01;
3492
3493 return __hci_cmd_sync_status(hdev, HCI_OP_READ_STORED_LINK_KEY,
3494 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3495}
3496
3497static int hci_setup_link_policy_sync(struct hci_dev *hdev)
3498{
3499 struct hci_cp_write_def_link_policy cp;
3500 u16 link_policy = 0;
3501
3502 if (!(hdev->commands[5] & 0x10))
3503 return 0;
3504
3505 memset(&cp, 0, sizeof(cp));
3506
3507 if (lmp_rswitch_capable(hdev))
3508 link_policy |= HCI_LP_RSWITCH;
3509 if (lmp_hold_capable(hdev))
3510 link_policy |= HCI_LP_HOLD;
3511 if (lmp_sniff_capable(hdev))
3512 link_policy |= HCI_LP_SNIFF;
3513 if (lmp_park_capable(hdev))
3514 link_policy |= HCI_LP_PARK;
3515
3516 cp.policy = cpu_to_le16(link_policy);
3517
3518 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_DEF_LINK_POLICY,
3519 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3520}
3521
3522static int hci_read_page_scan_activity_sync(struct hci_dev *hdev)
3523{
3524 if (!(hdev->commands[8] & 0x01))
3525 return 0;
3526
3527 return __hci_cmd_sync_status(hdev, HCI_OP_READ_PAGE_SCAN_ACTIVITY,
3528 0, NULL, HCI_CMD_TIMEOUT);
3529}
3530
3531static int hci_read_def_err_data_reporting_sync(struct hci_dev *hdev)
3532{
3533 if (!(hdev->commands[18] & 0x04) ||
766ae242 3534 !(hdev->features[0][6] & LMP_ERR_DATA_REPORTING))
d0b13706
LAD		 3535 return 0;
3536
3537 return __hci_cmd_sync_status(hdev, HCI_OP_READ_DEF_ERR_DATA_REPORTING,
3538 0, NULL, HCI_CMD_TIMEOUT);
3539}
3540
3541static int hci_read_page_scan_type_sync(struct hci_dev *hdev)
3542{
3543 /* Some older Broadcom based Bluetooth 1.2 controllers do not
3544 * support the Read Page Scan Type command. Check support for
3545 * this command in the bit mask of supported commands.
3546 */
3547 if (!(hdev->commands[13] & 0x01))
3548 return 0;
3549
3550 return __hci_cmd_sync_status(hdev, HCI_OP_READ_PAGE_SCAN_TYPE,
3551 0, NULL, HCI_CMD_TIMEOUT);
3552}
3553
3554/* Read features beyond page 1 if available */
3555static int hci_read_local_ext_features_all_sync(struct hci_dev *hdev)
3556{
3557 u8 page;
3558 int err;
3559
3560 if (!lmp_ext_feat_capable(hdev))
3561 return 0;
3562
3563 for (page = 2; page < HCI_MAX_PAGES && page <= hdev->max_page;
3564 page++) {
3565 err = hci_read_local_ext_features_sync(hdev, page);
3566 if (err)
3567 return err;
3568 }
3569
3570 return 0;
3571}
3572
3573/* HCI Controller init stage 3 command sequence */
3574static const struct hci_init_stage hci_init3[] = {
3575 /* HCI_OP_SET_EVENT_MASK */
3576 HCI_INIT(hci_set_event_mask_sync),
3577 /* HCI_OP_READ_STORED_LINK_KEY */
3578 HCI_INIT(hci_read_stored_link_key_sync),
3579 /* HCI_OP_WRITE_DEF_LINK_POLICY */
3580 HCI_INIT(hci_setup_link_policy_sync),
3581 /* HCI_OP_READ_PAGE_SCAN_ACTIVITY */
3582 HCI_INIT(hci_read_page_scan_activity_sync),
3583 /* HCI_OP_READ_DEF_ERR_DATA_REPORTING */
3584 HCI_INIT(hci_read_def_err_data_reporting_sync),
3585 /* HCI_OP_READ_PAGE_SCAN_TYPE */
3586 HCI_INIT(hci_read_page_scan_type_sync),
3587 /* HCI_OP_READ_LOCAL_EXT_FEATURES */
3588 HCI_INIT(hci_read_local_ext_features_all_sync),
3589 {}
3590};
3591
3592static int hci_le_set_event_mask_sync(struct hci_dev *hdev)
3593{
3594 u8 events[8];
3595
3596 if (!lmp_le_capable(hdev))
3597 return 0;
3598
3599 memset(events, 0, sizeof(events));
3600
3601 if (hdev->le_features[0] & HCI_LE_ENCRYPTION)
3602 events[0] |= 0x10; /* LE Long Term Key Request */
3603
3604 /* If controller supports the Connection Parameters Request
3605 * Link Layer Procedure, enable the corresponding event.
3606 */
3607 if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC)
3608 /* LE Remote Connection Parameter Request */
3609 events[0] |= 0x20;
3610
3611 /* If the controller supports the Data Length Extension
3612 * feature, enable the corresponding event.
3613 */
3614 if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT)
3615 events[0] |= 0x40; /* LE Data Length Change */
3616
a56a1138
LAD		 3617 /* If the controller supports LL Privacy feature or LE Extended Adv,
3618 * enable the corresponding event.
d0b13706 3619 */
a56a1138 3620 if (use_enhanced_conn_complete(hdev))
d0b13706
LAD		 3621 events[1] |= 0x02; /* LE Enhanced Connection Complete */
3622
3623 /* If the controller supports Extended Scanner Filter
3624 * Policies, enable the corresponding event.
3625 */
3626 if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY)
3627 events[1] |= 0x04; /* LE Direct Advertising Report */
3628
3629 /* If the controller supports Channel Selection Algorithm #2
3630 * feature, enable the corresponding event.
3631 */
3632 if (hdev->le_features[1] & HCI_LE_CHAN_SEL_ALG2)
3633 events[2] |= 0x08; /* LE Channel Selection Algorithm */
3634
3635 /* If the controller supports the LE Set Scan Enable command,
3636 * enable the corresponding advertising report event.
3637 */
3638 if (hdev->commands[26] & 0x08)
3639 events[0] |= 0x02; /* LE Advertising Report */
3640
3641 /* If the controller supports the LE Create Connection
3642 * command, enable the corresponding event.
3643 */
3644 if (hdev->commands[26] & 0x10)
3645 events[0] |= 0x01; /* LE Connection Complete */
3646
3647 /* If the controller supports the LE Connection Update
3648 * command, enable the corresponding event.
3649 */
3650 if (hdev->commands[27] & 0x04)
3651 events[0] |= 0x04; /* LE Connection Update Complete */
3652
3653 /* If the controller supports the LE Read Remote Used Features
3654 * command, enable the corresponding event.
3655 */
3656 if (hdev->commands[27] & 0x20)
3657 /* LE Read Remote Used Features Complete */
3658 events[0] |= 0x08;
3659
3660 /* If the controller supports the LE Read Local P-256
3661 * Public Key command, enable the corresponding event.
3662 */
3663 if (hdev->commands[34] & 0x02)
3664 /* LE Read Local P-256 Public Key Complete */
3665 events[0] |= 0x80;
3666
3667 /* If the controller supports the LE Generate DHKey
3668 * command, enable the corresponding event.
3669 */
3670 if (hdev->commands[34] & 0x04)
3671 events[1] |= 0x01; /* LE Generate DHKey Complete */
3672
3673 /* If the controller supports the LE Set Default PHY or
3674 * LE Set PHY commands, enable the corresponding event.
3675 */
3676 if (hdev->commands[35] & (0x20 | 0x40))
3677 events[1] |= 0x08; /* LE PHY Update Complete */
3678
3679 /* If the controller supports LE Set Extended Scan Parameters
3680 * and LE Set Extended Scan Enable commands, enable the
3681 * corresponding event.
3682 */
3683 if (use_ext_scan(hdev))
3684 events[1] |= 0x10; /* LE Extended Advertising Report */
3685
3686 /* If the controller supports the LE Extended Advertising
3687 * command, enable the corresponding event.
3688 */
3689 if (ext_adv_capable(hdev))
3690 events[2] |= 0x02; /* LE Advertising Set Terminated */
3691
26afbd82
LAD		 3692 if (cis_capable(hdev)) {
3693 events[3] |= 0x01; /* LE CIS Established */
3694 if (cis_peripheral_capable(hdev))
3695 events[3] |= 0x02; /* LE CIS Request */
3696 }
3697
eca0ae4a
LAD		 3698 if (bis_capable(hdev)) {
3699 events[3] |= 0x04; /* LE Create BIG Complete */
3700 events[3] |= 0x08; /* LE Terminate BIG Complete */
3701 events[3] |= 0x10; /* LE BIG Sync Established */
3702 events[3] |= 0x20; /* LE BIG Sync Loss */
3703 }
3704
d0b13706
LAD		 3705 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EVENT_MASK,
3706 sizeof(events), events, HCI_CMD_TIMEOUT);
3707}
3708
3709/* Read LE Advertising Channel TX Power */
3710static int hci_le_read_adv_tx_power_sync(struct hci_dev *hdev)
3711{
3712 if ((hdev->commands[25] & 0x40) && !ext_adv_capable(hdev)) {
3713 /* HCI TS spec forbids mixing of legacy and extended
3714 * advertising commands wherein READ_ADV_TX_POWER is
3715 * also included. So do not call it if extended adv
3716 * is supported otherwise controller will return
3717 * COMMAND_DISALLOWED for extended commands.
3718 */
3719 return __hci_cmd_sync_status(hdev,
3720 HCI_OP_LE_READ_ADV_TX_POWER,
3721 0, NULL, HCI_CMD_TIMEOUT);
3722 }
3723
3724 return 0;
3725}
3726
3727/* Read LE Min/Max Tx Power*/
3728static int hci_le_read_tx_power_sync(struct hci_dev *hdev)
3729{
d2f8114f
AG		 3730 if (!(hdev->commands[38] & 0x80) ||
3731 test_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks))
d0b13706
LAD		 3732 return 0;
3733
3734 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_TRANSMIT_POWER,
3735 0, NULL, HCI_CMD_TIMEOUT);
3736}
3737
3738/* Read LE Accept List Size */
3739static int hci_le_read_accept_list_size_sync(struct hci_dev *hdev)
3740{
3741 if (!(hdev->commands[26] & 0x40))
3742 return 0;
3743
3744 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
3745 0, NULL, HCI_CMD_TIMEOUT);
3746}
3747
3748/* Clear LE Accept List */
3749static int hci_le_clear_accept_list_sync(struct hci_dev *hdev)
3750{
3751 if (!(hdev->commands[26] & 0x80))
3752 return 0;
3753
3754 return __hci_cmd_sync_status(hdev, HCI_OP_LE_CLEAR_ACCEPT_LIST, 0, NULL,
3755 HCI_CMD_TIMEOUT);
3756}
3757
3758/* Read LE Resolving List Size */
3759static int hci_le_read_resolv_list_size_sync(struct hci_dev *hdev)
3760{
3761 if (!(hdev->commands[34] & 0x40))
3762 return 0;
3763
3764 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_RESOLV_LIST_SIZE,
3765 0, NULL, HCI_CMD_TIMEOUT);
3766}
3767
3768/* Clear LE Resolving List */
3769static int hci_le_clear_resolv_list_sync(struct hci_dev *hdev)
3770{
3771 if (!(hdev->commands[34] & 0x20))
3772 return 0;
3773
3774 return __hci_cmd_sync_status(hdev, HCI_OP_LE_CLEAR_RESOLV_LIST, 0, NULL,
3775 HCI_CMD_TIMEOUT);
3776}
3777
3778/* Set RPA timeout */
3779static int hci_le_set_rpa_timeout_sync(struct hci_dev *hdev)
3780{
3781 __le16 timeout = cpu_to_le16(hdev->rpa_timeout);
3782
3783 if (!(hdev->commands[35] & 0x04))
3784 return 0;
3785
3786 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_RPA_TIMEOUT,
3787 sizeof(timeout), &timeout,
3788 HCI_CMD_TIMEOUT);
3789}
3790
3791/* Read LE Maximum Data Length */
3792static int hci_le_read_max_data_len_sync(struct hci_dev *hdev)
3793{
3794 if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT))
3795 return 0;
3796
3797 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL,
3798 HCI_CMD_TIMEOUT);
3799}
3800
3801/* Read LE Suggested Default Data Length */
3802static int hci_le_read_def_data_len_sync(struct hci_dev *hdev)
3803{
3804 if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT))
3805 return 0;
3806
3807 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL,
3808 HCI_CMD_TIMEOUT);
3809}
3810
3811/* Read LE Number of Supported Advertising Sets */
3812static int hci_le_read_num_support_adv_sets_sync(struct hci_dev *hdev)
3813{
3814 if (!ext_adv_capable(hdev))
3815 return 0;
3816
3817 return __hci_cmd_sync_status(hdev,
3818 HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
3819 0, NULL, HCI_CMD_TIMEOUT);
3820}
3821
3822/* Write LE Host Supported */
3823static int hci_set_le_support_sync(struct hci_dev *hdev)
3824{
3825 struct hci_cp_write_le_host_supported cp;
3826
3827 /* LE-only devices do not support explicit enablement */
3828 if (!lmp_bredr_capable(hdev))
3829 return 0;
3830
3831 memset(&cp, 0, sizeof(cp));
3832
3833 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) {
3834 cp.le = 0x01;
3835 cp.simul = 0x00;
3836 }
3837
3838 if (cp.le == lmp_host_le_capable(hdev))
3839 return 0;
3840
3841 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED,
3842 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3843}
3844
26afbd82
LAD		 3845/* LE Set Host Feature */
3846static int hci_le_set_host_feature_sync(struct hci_dev *hdev)
3847{
3848 struct hci_cp_le_set_host_feature cp;
3849
3850 if (!iso_capable(hdev))
3851 return 0;
3852
3853 memset(&cp, 0, sizeof(cp));
3854
3855 /* Isochronous Channels (Host Support) */
3856 cp.bit_number = 32;
3857 cp.bit_value = 1;
3858
3859 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_HOST_FEATURE,
3860 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3861}
3862
d0b13706
LAD		 3863/* LE Controller init stage 3 command sequence */
3864static const struct hci_init_stage le_init3[] = {
3865 /* HCI_OP_LE_SET_EVENT_MASK */
3866 HCI_INIT(hci_le_set_event_mask_sync),
3867 /* HCI_OP_LE_READ_ADV_TX_POWER */
3868 HCI_INIT(hci_le_read_adv_tx_power_sync),
3869 /* HCI_OP_LE_READ_TRANSMIT_POWER */
3870 HCI_INIT(hci_le_read_tx_power_sync),
3871 /* HCI_OP_LE_READ_ACCEPT_LIST_SIZE */
3872 HCI_INIT(hci_le_read_accept_list_size_sync),
3873 /* HCI_OP_LE_CLEAR_ACCEPT_LIST */
3874 HCI_INIT(hci_le_clear_accept_list_sync),
3875 /* HCI_OP_LE_READ_RESOLV_LIST_SIZE */
3876 HCI_INIT(hci_le_read_resolv_list_size_sync),
3877 /* HCI_OP_LE_CLEAR_RESOLV_LIST */
3878 HCI_INIT(hci_le_clear_resolv_list_sync),
3879 /* HCI_OP_LE_SET_RPA_TIMEOUT */
3880 HCI_INIT(hci_le_set_rpa_timeout_sync),
3881 /* HCI_OP_LE_READ_MAX_DATA_LEN */
3882 HCI_INIT(hci_le_read_max_data_len_sync),
3883 /* HCI_OP_LE_READ_DEF_DATA_LEN */
3884 HCI_INIT(hci_le_read_def_data_len_sync),
3885 /* HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS */
3886 HCI_INIT(hci_le_read_num_support_adv_sets_sync),
3887 /* HCI_OP_WRITE_LE_HOST_SUPPORTED */
3888 HCI_INIT(hci_set_le_support_sync),
26afbd82
LAD		 3889 /* HCI_OP_LE_SET_HOST_FEATURE */
3890 HCI_INIT(hci_le_set_host_feature_sync),
d0b13706
LAD		 3891 {}
3892};
3893
3894static int hci_init3_sync(struct hci_dev *hdev)
3895{
3896 int err;
3897
3898 bt_dev_dbg(hdev, "");
3899
3900 err = hci_init_stage_sync(hdev, hci_init3);
3901 if (err)
3902 return err;
3903
3904 if (lmp_le_capable(hdev))
3905 return hci_init_stage_sync(hdev, le_init3);
3906
3907 return 0;
3908}
3909
3910static int hci_delete_stored_link_key_sync(struct hci_dev *hdev)
3911{
3912 struct hci_cp_delete_stored_link_key cp;
3913
3914 /* Some Broadcom based Bluetooth controllers do not support the
3915 * Delete Stored Link Key command. They are clearly indicating its
3916 * absence in the bit mask of supported commands.
3917 *
3918 * Check the supported commands and only if the command is marked
3919 * as supported send it. If not supported assume that the controller
3920 * does not have actual support for stored link keys which makes this
3921 * command redundant anyway.
3922 *
3923 * Some controllers indicate that they support handling deleting
3924 * stored link keys, but they don't. The quirk lets a driver
3925 * just disable this command.
3926 */
3927 if (!(hdev->commands[6] & 0x80) ||
3928 test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks))
3929 return 0;
3930
3931 memset(&cp, 0, sizeof(cp));
3932 bacpy(&cp.bdaddr, BDADDR_ANY);
3933 cp.delete_all = 0x01;
3934
3935 return __hci_cmd_sync_status(hdev, HCI_OP_DELETE_STORED_LINK_KEY,
3936 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3937}
3938
3939static int hci_set_event_mask_page_2_sync(struct hci_dev *hdev)
3940{
3941 u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
3942 bool changed = false;
3943
3944 /* Set event mask page 2 if the HCI command for it is supported */
3945 if (!(hdev->commands[22] & 0x04))
3946 return 0;
3947
3948 /* If Connectionless Peripheral Broadcast central role is supported
3949 * enable all necessary events for it.
3950 */
3951 if (lmp_cpb_central_capable(hdev)) {
3952 events[1] |= 0x40; /* Triggered Clock Capture */
3953 events[1] |= 0x80; /* Synchronization Train Complete */
0feb8af0 3954 events[2] |= 0x08; /* Truncated Page Complete */
d0b13706
LAD		 3955 events[2] |= 0x20; /* CPB Channel Map Change */
3956 changed = true;
3957 }
3958
3959 /* If Connectionless Peripheral Broadcast peripheral role is supported
3960 * enable all necessary events for it.
3961 */
3962 if (lmp_cpb_peripheral_capable(hdev)) {
3963 events[2] |= 0x01; /* Synchronization Train Received */
3964 events[2] |= 0x02; /* CPB Receive */
3965 events[2] |= 0x04; /* CPB Timeout */
0feb8af0 3966 events[2] |= 0x10; /* Peripheral Page Response Timeout */
d0b13706
LAD		 3967 changed = true;
3968 }
3969
3970 /* Enable Authenticated Payload Timeout Expired event if supported */
3971 if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) {
3972 events[2] |= 0x80;
3973 changed = true;
3974 }
3975
3976 /* Some Broadcom based controllers indicate support for Set Event
3977 * Mask Page 2 command, but then actually do not support it. Since
3978 * the default value is all bits set to zero, the command is only
3979 * required if the event mask has to be changed. In case no change
3980 * to the event mask is needed, skip this command.
3981 */
3982 if (!changed)
3983 return 0;
3984
3985 return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_MASK_PAGE_2,
3986 sizeof(events), events, HCI_CMD_TIMEOUT);
3987}
3988
3989/* Read local codec list if the HCI command is supported */
3990static int hci_read_local_codecs_sync(struct hci_dev *hdev)
3991{
3992 if (!(hdev->commands[29] & 0x20))
3993 return 0;
3994
3995 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_CODECS, 0, NULL,
3996 HCI_CMD_TIMEOUT);
3997}
3998
3999/* Read local pairing options if the HCI command is supported */
4000static int hci_read_local_pairing_opts_sync(struct hci_dev *hdev)
4001{
4002 if (!(hdev->commands[41] & 0x08))
4003 return 0;
4004
4005 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_PAIRING_OPTS,
4006 0, NULL, HCI_CMD_TIMEOUT);
4007}
4008
4009/* Get MWS transport configuration if the HCI command is supported */
4010static int hci_get_mws_transport_config_sync(struct hci_dev *hdev)
4011{
4012 if (!(hdev->commands[30] & 0x08))
4013 return 0;
4014
4015 return __hci_cmd_sync_status(hdev, HCI_OP_GET_MWS_TRANSPORT_CONFIG,
4016 0, NULL, HCI_CMD_TIMEOUT);
4017}
4018
4019/* Check for Synchronization Train support */
4020static int hci_read_sync_train_params_sync(struct hci_dev *hdev)
4021{
4022 if (!lmp_sync_train_capable(hdev))
4023 return 0;
4024
4025 return __hci_cmd_sync_status(hdev, HCI_OP_READ_SYNC_TRAIN_PARAMS,
4026 0, NULL, HCI_CMD_TIMEOUT);
4027}
4028
4029/* Enable Secure Connections if supported and configured */
4030static int hci_write_sc_support_1_sync(struct hci_dev *hdev)
4031{
4032 u8 support = 0x01;
4033
4034 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED) ||
4035 !bredr_sc_enabled(hdev))
4036 return 0;
4037
4038 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SC_SUPPORT,
4039 sizeof(support), &support,
4040 HCI_CMD_TIMEOUT);
4041}
4042
4043/* Set erroneous data reporting if supported to the wideband speech
4044 * setting value
4045 */
4046static int hci_set_err_data_report_sync(struct hci_dev *hdev)
4047{
4048 struct hci_cp_write_def_err_data_reporting cp;
4049 bool enabled = hci_dev_test_flag(hdev, HCI_WIDEBAND_SPEECH_ENABLED);
4050
4051 if (!(hdev->commands[18] & 0x08) ||
766ae242 4052 !(hdev->features[0][6] & LMP_ERR_DATA_REPORTING))
d0b13706
LAD		 4053 return 0;
4054
4055 if (enabled == hdev->err_data_reporting)
4056 return 0;
4057
4058 memset(&cp, 0, sizeof(cp));
4059 cp.err_data_reporting = enabled ? ERR_DATA_REPORTING_ENABLED :
4060 ERR_DATA_REPORTING_DISABLED;
4061
4062 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4063 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4064}
4065
4066static const struct hci_init_stage hci_init4[] = {
4067 /* HCI_OP_DELETE_STORED_LINK_KEY */
4068 HCI_INIT(hci_delete_stored_link_key_sync),
4069 /* HCI_OP_SET_EVENT_MASK_PAGE_2 */
4070 HCI_INIT(hci_set_event_mask_page_2_sync),
4071 /* HCI_OP_READ_LOCAL_CODECS */
4072 HCI_INIT(hci_read_local_codecs_sync),
4073 /* HCI_OP_READ_LOCAL_PAIRING_OPTS */
4074 HCI_INIT(hci_read_local_pairing_opts_sync),
4075 /* HCI_OP_GET_MWS_TRANSPORT_CONFIG */
4076 HCI_INIT(hci_get_mws_transport_config_sync),
4077 /* HCI_OP_READ_SYNC_TRAIN_PARAMS */
4078 HCI_INIT(hci_read_sync_train_params_sync),
4079 /* HCI_OP_WRITE_SC_SUPPORT */
4080 HCI_INIT(hci_write_sc_support_1_sync),
4081 /* HCI_OP_WRITE_DEF_ERR_DATA_REPORTING */
4082 HCI_INIT(hci_set_err_data_report_sync),
4083 {}
4084};
4085
4086/* Set Suggested Default Data Length to maximum if supported */
4087static int hci_le_set_write_def_data_len_sync(struct hci_dev *hdev)
4088{
4089 struct hci_cp_le_write_def_data_len cp;
4090
4091 if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT))
4092 return 0;
4093
4094 memset(&cp, 0, sizeof(cp));
4095 cp.tx_len = cpu_to_le16(hdev->le_max_tx_len);
4096 cp.tx_time = cpu_to_le16(hdev->le_max_tx_time);
4097
4098 return __hci_cmd_sync_status(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN,
4099 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4100}
4101
4102/* Set Default PHY parameters if command is supported */
4103static int hci_le_set_default_phy_sync(struct hci_dev *hdev)
4104{
4105 struct hci_cp_le_set_default_phy cp;
4106
4107 if (!(hdev->commands[35] & 0x20))
4108 return 0;
4109
4110 memset(&cp, 0, sizeof(cp));
4111 cp.all_phys = 0x00;
4112 cp.tx_phys = hdev->le_tx_def_phys;
4113 cp.rx_phys = hdev->le_rx_def_phys;
4114
4115 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_DEFAULT_PHY,
4116 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4117}
4118
4119static const struct hci_init_stage le_init4[] = {
4120 /* HCI_OP_LE_WRITE_DEF_DATA_LEN */
4121 HCI_INIT(hci_le_set_write_def_data_len_sync),
4122 /* HCI_OP_LE_SET_DEFAULT_PHY */
4123 HCI_INIT(hci_le_set_default_phy_sync),
4124 {}
4125};
4126
4127static int hci_init4_sync(struct hci_dev *hdev)
4128{
4129 int err;
4130
4131 bt_dev_dbg(hdev, "");
4132
4133 err = hci_init_stage_sync(hdev, hci_init4);
4134 if (err)
4135 return err;
4136
4137 if (lmp_le_capable(hdev))
4138 return hci_init_stage_sync(hdev, le_init4);
4139
4140 return 0;
4141}
4142
4143static int hci_init_sync(struct hci_dev *hdev)
4144{
4145 int err;
4146
4147 err = hci_init1_sync(hdev);
4148 if (err < 0)
4149 return err;
4150
4151 if (hci_dev_test_flag(hdev, HCI_SETUP))
4152 hci_debugfs_create_basic(hdev);
4153
4154 err = hci_init2_sync(hdev);
4155 if (err < 0)
4156 return err;
4157
4158 /* HCI_PRIMARY covers both single-mode LE, BR/EDR and dual-mode
4159 * BR/EDR/LE type controllers. AMP controllers only need the
4160 * first two stages of init.
4161 */
4162 if (hdev->dev_type != HCI_PRIMARY)
4163 return 0;
4164
4165 err = hci_init3_sync(hdev);
4166 if (err < 0)
4167 return err;
4168
4169 err = hci_init4_sync(hdev);
4170 if (err < 0)
4171 return err;
4172
4173 /* This function is only called when the controller is actually in
4174 * configured state. When the controller is marked as unconfigured,
4175 * this initialization procedure is not run.
4176 *
4177 * It means that it is possible that a controller runs through its
4178 * setup phase and then discovers missing settings. If that is the
4179 * case, then this function will not be called. It then will only
4180 * be called during the config phase.
4181 *
4182 * So only when in setup phase or config phase, create the debugfs
4183 * entries and register the SMP channels.
4184 */
4185 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4186 !hci_dev_test_flag(hdev, HCI_CONFIG))
4187 return 0;
4188
4189 hci_debugfs_create_common(hdev);
4190
4191 if (lmp_bredr_capable(hdev))
4192 hci_debugfs_create_bredr(hdev);
4193
4194 if (lmp_le_capable(hdev))
4195 hci_debugfs_create_le(hdev);
4196
4197 return 0;
4198}
4199
6b5c1cda
LAD		 4200#define HCI_QUIRK_BROKEN(_quirk, _desc) { HCI_QUIRK_BROKEN_##_quirk, _desc }
4201
4202static const struct {
4203 unsigned long quirk;
4204 const char *desc;
4205} hci_broken_table[] = {
4206 HCI_QUIRK_BROKEN(LOCAL_COMMANDS,
4207 "HCI Read Local Supported Commands not supported"),
4208 HCI_QUIRK_BROKEN(STORED_LINK_KEY,
4209 "HCI Delete Stored Link Key command is advertised, "
4210 "but not supported."),
6b5c1cda
LAD		 4211 HCI_QUIRK_BROKEN(READ_TRANSMIT_POWER,
4212 "HCI Read Transmit Power Level command is advertised, "
4213 "but not supported."),
4214 HCI_QUIRK_BROKEN(FILTER_CLEAR_ALL,
4215 "HCI Set Event Filter command not supported."),
4216 HCI_QUIRK_BROKEN(ENHANCED_SETUP_SYNC_CONN,
4217 "HCI Enhanced Setup Synchronous Connection command is "
4218 "advertised, but not supported.")
4219};
4220
1bbf4023
LAD		 4221/* This function handles hdev setup stage:
4222 *
4223 * Calls hdev->setup
4224 * Setup address if HCI_QUIRK_USE_BDADDR_PROPERTY is set.
4225 */
4226static int hci_dev_setup_sync(struct hci_dev *hdev)
d0b13706
LAD		 4227{
4228 int ret = 0;
1bbf4023
LAD		 4229 bool invalid_bdaddr;
4230 size_t i;
d0b13706
LAD		 4231
4232 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
1bbf4023
LAD		 4233 !test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks))
4234 return 0;
d0b13706 4235
1bbf4023 4236 bt_dev_dbg(hdev, "");
d0b13706 4237
1bbf4023 4238 hci_sock_dev_event(hdev, HCI_DEV_SETUP);
d0b13706 4239
1bbf4023
LAD		 4240 if (hdev->setup)
4241 ret = hdev->setup(hdev);
6b5c1cda 4242
1bbf4023
LAD		 4243 for (i = 0; i < ARRAY_SIZE(hci_broken_table); i++) {
4244 if (test_bit(hci_broken_table[i].quirk, &hdev->quirks))
4245 bt_dev_warn(hdev, "%s", hci_broken_table[i].desc);
4246 }
d0b13706 4247
1bbf4023
LAD		 4248 /* The transport driver can set the quirk to mark the
4249 * BD_ADDR invalid before creating the HCI device or in
4250 * its setup callback.
4251 */
4252 invalid_bdaddr = test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
d0b13706 4253
1bbf4023 4254 if (!ret) {
d0b13706
LAD		 4255 if (test_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks)) {
4256 if (!bacmp(&hdev->public_addr, BDADDR_ANY))
4257 hci_dev_get_bd_addr_from_property(hdev);
4258
4259 if (bacmp(&hdev->public_addr, BDADDR_ANY) &&
4260 hdev->set_bdaddr) {
4261 ret = hdev->set_bdaddr(hdev,
4262 &hdev->public_addr);
4263
4264 /* If setting of the BD_ADDR from the device
4265 * property succeeds, then treat the address
4266 * as valid even if the invalid BD_ADDR
4267 * quirk indicates otherwise.
4268 */
4269 if (!ret)
4270 invalid_bdaddr = false;
4271 }
4272 }
1bbf4023 4273 }
d0b13706 4274
1bbf4023
LAD		 4275 /* The transport driver can set these quirks before
4276 * creating the HCI device or in its setup callback.
4277 *
4278 * For the invalid BD_ADDR quirk it is possible that
4279 * it becomes a valid address if the bootloader does
4280 * provide it (see above).
4281 *
4282 * In case any of them is set, the controller has to
4283 * start up as unconfigured.
4284 */
4285 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) ||
4286 invalid_bdaddr)
4287 hci_dev_set_flag(hdev, HCI_UNCONFIGURED);
d0b13706 4288
1bbf4023
LAD		 4289 /* For an unconfigured controller it is required to
4290 * read at least the version information provided by
4291 * the Read Local Version Information command.
4292 *
4293 * If the set_bdaddr driver callback is provided, then
4294 * also the original Bluetooth public device address
4295 * will be read using the Read BD Address command.
4296 */
4297 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
4298 return hci_unconf_init_sync(hdev);
4299
4300 return ret;
4301}
4302
4303/* This function handles hdev init stage:
4304 *
4305 * Calls hci_dev_setup_sync to perform setup stage
4306 * Calls hci_init_sync to perform HCI command init sequence
4307 */
4308static int hci_dev_init_sync(struct hci_dev *hdev)
4309{
4310 int ret;
4311
4312 bt_dev_dbg(hdev, "");
4313
4314 atomic_set(&hdev->cmd_cnt, 1);
4315 set_bit(HCI_INIT, &hdev->flags);
4316
4317 ret = hci_dev_setup_sync(hdev);
d0b13706
LAD		 4318
4319 if (hci_dev_test_flag(hdev, HCI_CONFIG)) {
4320 /* If public address change is configured, ensure that
4321 * the address gets programmed. If the driver does not
4322 * support changing the public address, fail the power
4323 * on procedure.
4324 */
4325 if (bacmp(&hdev->public_addr, BDADDR_ANY) &&
4326 hdev->set_bdaddr)
4327 ret = hdev->set_bdaddr(hdev, &hdev->public_addr);
4328 else
4329 ret = -EADDRNOTAVAIL;
4330 }
4331
4332 if (!ret) {
4333 if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) &&
4334 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
4335 ret = hci_init_sync(hdev);
4336 if (!ret && hdev->post_init)
4337 ret = hdev->post_init(hdev);
4338 }
4339 }
4340
4341 /* If the HCI Reset command is clearing all diagnostic settings,
4342 * then they need to be reprogrammed after the init procedure
4343 * completed.
4344 */
4345 if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) &&
4346 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4347 hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) && hdev->set_diag)
4348 ret = hdev->set_diag(hdev, true);
4349
385315de
JM		 4350 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
4351 msft_do_open(hdev);
4352 aosp_do_open(hdev);
4353 }
d0b13706
LAD		 4354
4355 clear_bit(HCI_INIT, &hdev->flags);
4356
1bbf4023
LAD		 4357 return ret;
4358}
4359
4360int hci_dev_open_sync(struct hci_dev *hdev)
4361{
4362 int ret;
4363
4364 bt_dev_dbg(hdev, "");
4365
4366 if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) {
4367 ret = -ENODEV;
4368 goto done;
4369 }
4370
4371 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4372 !hci_dev_test_flag(hdev, HCI_CONFIG)) {
4373 /* Check for rfkill but allow the HCI setup stage to
4374 * proceed (which in itself doesn't cause any RF activity).
4375 */
4376 if (hci_dev_test_flag(hdev, HCI_RFKILLED)) {
4377 ret = -ERFKILL;
4378 goto done;
4379 }
4380
4381 /* Check for valid public address or a configured static
4382 * random address, but let the HCI setup proceed to
4383 * be able to determine if there is a public address
4384 * or not.
4385 *
4386 * In case of user channel usage, it is not important
4387 * if a public address or static random address is
4388 * available.
4389 *
4390 * This check is only valid for BR/EDR controllers
4391 * since AMP controllers do not have an address.
4392 */
4393 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4394 hdev->dev_type == HCI_PRIMARY &&
4395 !bacmp(&hdev->bdaddr, BDADDR_ANY) &&
4396 !bacmp(&hdev->static_addr, BDADDR_ANY)) {
4397 ret = -EADDRNOTAVAIL;
4398 goto done;
4399 }
4400 }
4401
4402 if (test_bit(HCI_UP, &hdev->flags)) {
4403 ret = -EALREADY;
4404 goto done;
4405 }
4406
4407 if (hdev->open(hdev)) {
4408 ret = -EIO;
4409 goto done;
4410 }
4411
4412 set_bit(HCI_RUNNING, &hdev->flags);
4413 hci_sock_dev_event(hdev, HCI_DEV_OPEN);
4414
4415 ret = hci_dev_init_sync(hdev);
d0b13706
LAD		 4416 if (!ret) {
4417 hci_dev_hold(hdev);
4418 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
4419 hci_adv_instances_set_rpa_expired(hdev, true);
4420 set_bit(HCI_UP, &hdev->flags);
4421 hci_sock_dev_event(hdev, HCI_DEV_UP);
4422 hci_leds_update_powered(hdev, true);
4423 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4424 !hci_dev_test_flag(hdev, HCI_CONFIG) &&
4425 !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) &&
4426 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4427 hci_dev_test_flag(hdev, HCI_MGMT) &&
4428 hdev->dev_type == HCI_PRIMARY) {
4429 ret = hci_powered_update_sync(hdev);
4430 }
4431 } else {
4432 /* Init failed, cleanup */
4433 flush_work(&hdev->tx_work);
4434
4435 /* Since hci_rx_work() is possible to awake new cmd_work
4436 * it should be flushed first to avoid unexpected call of
4437 * hci_cmd_work()
4438 */
4439 flush_work(&hdev->rx_work);
4440 flush_work(&hdev->cmd_work);
4441
4442 skb_queue_purge(&hdev->cmd_q);
4443 skb_queue_purge(&hdev->rx_q);
4444
4445 if (hdev->flush)
4446 hdev->flush(hdev);
4447
4448 if (hdev->sent_cmd) {
4449 kfree_skb(hdev->sent_cmd);
4450 hdev->sent_cmd = NULL;
4451 }
4452
4453 clear_bit(HCI_RUNNING, &hdev->flags);
4454 hci_sock_dev_event(hdev, HCI_DEV_CLOSE);
4455
4456 hdev->close(hdev);
4457 hdev->flags &= BIT(HCI_RAW);
4458 }
4459
4460done:
4461 return ret;
4462}
4463
4464/* This function requires the caller holds hdev->lock */
4465static void hci_pend_le_actions_clear(struct hci_dev *hdev)
4466{
4467 struct hci_conn_params *p;
4468
4469 list_for_each_entry(p, &hdev->le_conn_params, list) {
4470 if (p->conn) {
4471 hci_conn_drop(p->conn);
4472 hci_conn_put(p->conn);
4473 p->conn = NULL;
4474 }
4475 list_del_init(&p->action);
4476 }
4477
4478 BT_DBG("All LE pending actions cleared");
4479}
4480
4481int hci_dev_close_sync(struct hci_dev *hdev)
4482{
4483 bool auto_off;
4484 int err = 0;
4485
4486 bt_dev_dbg(hdev, "");
4487
4488 cancel_delayed_work(&hdev->power_off);
4489 cancel_delayed_work(&hdev->ncmd_timer);
8ffde2a7 4490 cancel_delayed_work(&hdev->le_scan_disable);
d0b13706
LAD		 4491
4492 hci_request_cancel_all(hdev);
4493
4494 if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) &&
4495 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4496 test_bit(HCI_UP, &hdev->flags)) {
4497 /* Execute vendor specific shutdown routine */
4498 if (hdev->shutdown)
4499 err = hdev->shutdown(hdev);
4500 }
4501
4502 if (!test_and_clear_bit(HCI_UP, &hdev->flags)) {
4503 cancel_delayed_work_sync(&hdev->cmd_timer);
4504 return err;
4505 }
4506
4507 hci_leds_update_powered(hdev, false);
4508
4509 /* Flush RX and TX works */
4510 flush_work(&hdev->tx_work);
4511 flush_work(&hdev->rx_work);
4512
4513 if (hdev->discov_timeout > 0) {
4514 hdev->discov_timeout = 0;
4515 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
4516 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
4517 }
4518
4519 if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE))
4520 cancel_delayed_work(&hdev->service_cache);
4521
4522 if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4523 struct adv_info *adv_instance;
4524
4525 cancel_delayed_work_sync(&hdev->rpa_expired);
4526
4527 list_for_each_entry(adv_instance, &hdev->adv_instances, list)
4528 cancel_delayed_work_sync(&adv_instance->rpa_expired_cb);
4529 }
4530
4531 /* Avoid potential lockdep warnings from the *_flush() calls by
4532 * ensuring the workqueue is empty up front.
4533 */
4534 drain_workqueue(hdev->workqueue);
4535
4536 hci_dev_lock(hdev);
4537
4538 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4539
4540 auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF);
4541
4542 if (!auto_off && hdev->dev_type == HCI_PRIMARY &&
4543 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4544 hci_dev_test_flag(hdev, HCI_MGMT))
4545 __mgmt_power_off(hdev);
4546
4547 hci_inquiry_cache_flush(hdev);
4548 hci_pend_le_actions_clear(hdev);
4549 hci_conn_hash_flush(hdev);
fa78d2d1 4550 /* Prevent data races on hdev->smp_data or hdev->smp_bredr_data */
d0b13706 4551 smp_unregister(hdev);
fa78d2d1 4552 hci_dev_unlock(hdev);
d0b13706
LAD		 4553
4554 hci_sock_dev_event(hdev, HCI_DEV_DOWN);
4555
385315de
JM		 4556 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
4557 aosp_do_close(hdev);
4558 msft_do_close(hdev);
4559 }
d0b13706
LAD		 4560
4561 if (hdev->flush)
4562 hdev->flush(hdev);
4563
4564 /* Reset device */
4565 skb_queue_purge(&hdev->cmd_q);
4566 atomic_set(&hdev->cmd_cnt, 1);
4567 if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) &&
4568 !auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
4569 set_bit(HCI_INIT, &hdev->flags);
4570 hci_reset_sync(hdev);
4571 clear_bit(HCI_INIT, &hdev->flags);
4572 }
4573
4574 /* flush cmd work */
4575 flush_work(&hdev->cmd_work);
4576
4577 /* Drop queues */
4578 skb_queue_purge(&hdev->rx_q);
4579 skb_queue_purge(&hdev->cmd_q);
4580 skb_queue_purge(&hdev->raw_q);
4581
4582 /* Drop last sent command */
4583 if (hdev->sent_cmd) {
4584 cancel_delayed_work_sync(&hdev->cmd_timer);
4585 kfree_skb(hdev->sent_cmd);
4586 hdev->sent_cmd = NULL;
4587 }
4588
4589 clear_bit(HCI_RUNNING, &hdev->flags);
4590 hci_sock_dev_event(hdev, HCI_DEV_CLOSE);
4591
d0b13706
LAD		 4592 /* After this point our queues are empty and no tasks are scheduled. */
4593 hdev->close(hdev);
4594
4595 /* Clear flags */
4596 hdev->flags &= BIT(HCI_RAW);
4597 hci_dev_clear_volatile_flags(hdev);
4598
4599 /* Controller radio is available but is currently powered down */
4600 hdev->amp_status = AMP_STATUS_POWERED_DOWN;
4601
4602 memset(hdev->eir, 0, sizeof(hdev->eir));
4603 memset(hdev->dev_class, 0, sizeof(hdev->dev_class));
4604 bacpy(&hdev->random_addr, BDADDR_ANY);
4605
4606 hci_dev_put(hdev);
4607 return err;
4608}
4609
4610/* This function perform power on HCI command sequence as follows:
4611 *
4612 * If controller is already up (HCI_UP) performs hci_powered_update_sync
4613 * sequence otherwise run hci_dev_open_sync which will follow with
4614 * hci_powered_update_sync after the init sequence is completed.
4615 */
4616static int hci_power_on_sync(struct hci_dev *hdev)
4617{
4618 int err;
4619
4620 if (test_bit(HCI_UP, &hdev->flags) &&
4621 hci_dev_test_flag(hdev, HCI_MGMT) &&
4622 hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) {
4623 cancel_delayed_work(&hdev->power_off);
4624 return hci_powered_update_sync(hdev);
4625 }
4626
4627 err = hci_dev_open_sync(hdev);
4628 if (err < 0)
4629 return err;
4630
4631 /* During the HCI setup phase, a few error conditions are
4632 * ignored and they need to be checked now. If they are still
4633 * valid, it is important to return the device back off.
4634 */
4635 if (hci_dev_test_flag(hdev, HCI_RFKILLED) ||
4636 hci_dev_test_flag(hdev, HCI_UNCONFIGURED) ||
4637 (hdev->dev_type == HCI_PRIMARY &&
4638 !bacmp(&hdev->bdaddr, BDADDR_ANY) &&
4639 !bacmp(&hdev->static_addr, BDADDR_ANY))) {
4640 hci_dev_clear_flag(hdev, HCI_AUTO_OFF);
4641 hci_dev_close_sync(hdev);
4642 } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) {
4643 queue_delayed_work(hdev->req_workqueue, &hdev->power_off,
4644 HCI_AUTO_OFF_TIMEOUT);
4645 }
4646
4647 if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) {
4648 /* For unconfigured devices, set the HCI_RAW flag
4649 * so that userspace can easily identify them.
4650 */
4651 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
4652 set_bit(HCI_RAW, &hdev->flags);
4653
4654 /* For fully configured devices, this will send
4655 * the Index Added event. For unconfigured devices,
4656 * it will send Unconfigued Index Added event.
4657 *
4658 * Devices with HCI_QUIRK_RAW_DEVICE are ignored
4659 * and no event will be send.
4660 */
4661 mgmt_index_added(hdev);
4662 } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) {
4663 /* When the controller is now configured, then it
4664 * is important to clear the HCI_RAW flag.
4665 */
4666 if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
4667 clear_bit(HCI_RAW, &hdev->flags);
4668
4669 /* Powering on the controller with HCI_CONFIG set only
4670 * happens with the transition from unconfigured to
4671 * configured. This will send the Index Added event.
4672 */
4673 mgmt_index_added(hdev);
4674 }
4675
4676 return 0;
4677}
4678
4679static int hci_remote_name_cancel_sync(struct hci_dev *hdev, bdaddr_t *addr)
4680{
4681 struct hci_cp_remote_name_req_cancel cp;
4682
4683 memset(&cp, 0, sizeof(cp));
4684 bacpy(&cp.bdaddr, addr);
4685
4686 return __hci_cmd_sync_status(hdev, HCI_OP_REMOTE_NAME_REQ_CANCEL,
4687 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4688}
4689
4690int hci_stop_discovery_sync(struct hci_dev *hdev)
4691{
4692 struct discovery_state *d = &hdev->discovery;
4693 struct inquiry_entry *e;
4694 int err;
4695
4696 bt_dev_dbg(hdev, "state %u", hdev->discovery.state);
4697
4698 if (d->state == DISCOVERY_FINDING || d->state == DISCOVERY_STOPPING) {
4699 if (test_bit(HCI_INQUIRY, &hdev->flags)) {
4700 err = __hci_cmd_sync_status(hdev, HCI_OP_INQUIRY_CANCEL,
4701 0, NULL, HCI_CMD_TIMEOUT);
4702 if (err)
4703 return err;
4704 }
4705
4706 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
4707 cancel_delayed_work(&hdev->le_scan_disable);
4708 cancel_delayed_work(&hdev->le_scan_restart);
4709
4710 err = hci_scan_disable_sync(hdev);
4711 if (err)
4712 return err;
4713 }
4714
4715 } else {
4716 err = hci_scan_disable_sync(hdev);
4717 if (err)
4718 return err;
4719 }
4720
4721 /* Resume advertising if it was paused */
4722 if (use_ll_privacy(hdev))
4723 hci_resume_advertising_sync(hdev);
4724
4725 /* No further actions needed for LE-only discovery */
4726 if (d->type == DISCOV_TYPE_LE)
4727 return 0;
4728
4729 if (d->state == DISCOVERY_RESOLVING || d->state == DISCOVERY_STOPPING) {
4730 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY,
4731 NAME_PENDING);
4732 if (!e)
4733 return 0;
4734
4735 return hci_remote_name_cancel_sync(hdev, &e->data.bdaddr);
4736 }
4737
4738 return 0;
4739}
4740
4741static int hci_disconnect_phy_link_sync(struct hci_dev *hdev, u16 handle,
4742 u8 reason)
4743{
4744 struct hci_cp_disconn_phy_link cp;
4745
4746 memset(&cp, 0, sizeof(cp));
4747 cp.phy_handle = HCI_PHY_HANDLE(handle);
4748 cp.reason = reason;
4749
4750 return __hci_cmd_sync_status(hdev, HCI_OP_DISCONN_PHY_LINK,
4751 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4752}
4753
4754static int hci_disconnect_sync(struct hci_dev *hdev, struct hci_conn *conn,
4755 u8 reason)
4756{
4757 struct hci_cp_disconnect cp;
4758
4759 if (conn->type == AMP_LINK)
4760 return hci_disconnect_phy_link_sync(hdev, conn->handle, reason);
4761
4762 memset(&cp, 0, sizeof(cp));
4763 cp.handle = cpu_to_le16(conn->handle);
4764 cp.reason = reason;
4765
4766 /* Wait for HCI_EV_DISCONN_COMPLETE not HCI_EV_CMD_STATUS when not
4767 * suspending.
4768 */
4769 if (!hdev->suspended)
4770 return __hci_cmd_sync_status_sk(hdev, HCI_OP_DISCONNECT,
4771 sizeof(cp), &cp,
4772 HCI_EV_DISCONN_COMPLETE,
4773 HCI_CMD_TIMEOUT, NULL);
4774
4775 return __hci_cmd_sync_status(hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp,
4776 HCI_CMD_TIMEOUT);
4777}
4778
4779static int hci_le_connect_cancel_sync(struct hci_dev *hdev,
4780 struct hci_conn *conn)
4781{
4782 if (test_bit(HCI_CONN_SCANNING, &conn->flags))
4783 return 0;
4784
4785 return __hci_cmd_sync_status(hdev, HCI_OP_LE_CREATE_CONN_CANCEL,
4786 6, &conn->dst, HCI_CMD_TIMEOUT);
4787}
4788
4789static int hci_connect_cancel_sync(struct hci_dev *hdev, struct hci_conn *conn)
4790{
4791 if (conn->type == LE_LINK)
4792 return hci_le_connect_cancel_sync(hdev, conn);
4793
4794 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
4795 return 0;
4796
4797 return __hci_cmd_sync_status(hdev, HCI_OP_CREATE_CONN_CANCEL,
4798 6, &conn->dst, HCI_CMD_TIMEOUT);
4799}
4800
4801static int hci_reject_sco_sync(struct hci_dev *hdev, struct hci_conn *conn,
4802 u8 reason)
4803{
4804 struct hci_cp_reject_sync_conn_req cp;
4805
4806 memset(&cp, 0, sizeof(cp));
4807 bacpy(&cp.bdaddr, &conn->dst);
4808 cp.reason = reason;
4809
4810 /* SCO rejection has its own limited set of
4811 * allowed error values (0x0D-0x0F).
4812 */
4813 if (reason < 0x0d || reason > 0x0f)
4814 cp.reason = HCI_ERROR_REJ_LIMITED_RESOURCES;
4815
4816 return __hci_cmd_sync_status(hdev, HCI_OP_REJECT_SYNC_CONN_REQ,
4817 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4818}
4819
4820static int hci_reject_conn_sync(struct hci_dev *hdev, struct hci_conn *conn,
4821 u8 reason)
4822{
4823 struct hci_cp_reject_conn_req cp;
4824
4825 if (conn->type == SCO_LINK || conn->type == ESCO_LINK)
4826 return hci_reject_sco_sync(hdev, conn, reason);
4827
4828 memset(&cp, 0, sizeof(cp));
4829 bacpy(&cp.bdaddr, &conn->dst);
4830 cp.reason = reason;
4831
4832 return __hci_cmd_sync_status(hdev, HCI_OP_REJECT_CONN_REQ,
4833 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4834}
4835
1f7435c8 4836int hci_abort_conn_sync(struct hci_dev *hdev, struct hci_conn *conn, u8 reason)
d0b13706 4837{
9b3628d7
LAD		 4838 int err;
4839
d0b13706
LAD		 4840 switch (conn->state) {
4841 case BT_CONNECTED:
4842 case BT_CONFIG:
4843 return hci_disconnect_sync(hdev, conn, reason);
4844 case BT_CONNECT:
9b3628d7
LAD		 4845 err = hci_connect_cancel_sync(hdev, conn);
4846 /* Cleanup hci_conn object if it cannot be cancelled as it
4847 * likelly means the controller and host stack are out of sync.
4848 */
4849 if (err)
4850 hci_conn_failed(conn, err);
4851
4852 return err;
d0b13706
LAD		 4853 case BT_CONNECT2:
4854 return hci_reject_conn_sync(hdev, conn, reason);
4855 default:
4856 conn->state = BT_CLOSED;
4857 break;
4858 }
4859
4860 return 0;
4861}
4862
182ee45d
LAD		 4863static int hci_disconnect_all_sync(struct hci_dev *hdev, u8 reason)
4864{
4865 struct hci_conn *conn, *tmp;
4866 int err;
4867
4868 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
4869 err = hci_abort_conn_sync(hdev, conn, reason);
4870 if (err)
4871 return err;
4872 }
4873
8cd3c55c 4874 return 0;
182ee45d
LAD		 4875}
4876
d0b13706
LAD		 4877/* This function perform power off HCI command sequence as follows:
4878 *
4879 * Clear Advertising
4880 * Stop Discovery
4881 * Disconnect all connections
4882 * hci_dev_close_sync
4883 */
4884static int hci_power_off_sync(struct hci_dev *hdev)
4885{
d0b13706
LAD		 4886 int err;
4887
4888 /* If controller is already down there is nothing to do */
4889 if (!test_bit(HCI_UP, &hdev->flags))
4890 return 0;
4891
4892 if (test_bit(HCI_ISCAN, &hdev->flags) ||
4893 test_bit(HCI_PSCAN, &hdev->flags)) {
4894 err = hci_write_scan_enable_sync(hdev, 0x00);
4895 if (err)
4896 return err;
4897 }
4898
4899 err = hci_clear_adv_sync(hdev, NULL, false);
4900 if (err)
4901 return err;
4902
4903 err = hci_stop_discovery_sync(hdev);
4904 if (err)
4905 return err;
4906
182ee45d
LAD		 4907 /* Terminated due to Power Off */
4908 err = hci_disconnect_all_sync(hdev, HCI_ERROR_REMOTE_POWER_OFF);
4909 if (err)
4910 return err;
d0b13706
LAD		 4911
4912 return hci_dev_close_sync(hdev);
4913}
4914
4915int hci_set_powered_sync(struct hci_dev *hdev, u8 val)
4916{
4917 if (val)
4918 return hci_power_on_sync(hdev);
cf75ad8b
LAD		 4919
4920 return hci_power_off_sync(hdev);
4921}
abfeea47 4922
2bd1b237
LAD		 4923static int hci_write_iac_sync(struct hci_dev *hdev)
4924{
4925 struct hci_cp_write_current_iac_lap cp;
4926
4927 if (!hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
4928 return 0;
4929
4930 memset(&cp, 0, sizeof(cp));
4931
4932 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) {
4933 /* Limited discoverable mode */
4934 cp.num_iac = min_t(u8, hdev->num_iac, 2);
4935 cp.iac_lap[0] = 0x00; /* LIAC */
4936 cp.iac_lap[1] = 0x8b;
4937 cp.iac_lap[2] = 0x9e;
4938 cp.iac_lap[3] = 0x33; /* GIAC */
4939 cp.iac_lap[4] = 0x8b;
4940 cp.iac_lap[5] = 0x9e;
4941 } else {
4942 /* General discoverable mode */
4943 cp.num_iac = 1;
4944 cp.iac_lap[0] = 0x33; /* GIAC */
4945 cp.iac_lap[1] = 0x8b;
4946 cp.iac_lap[2] = 0x9e;
4947 }
4948
4949 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CURRENT_IAC_LAP,
4950 (cp.num_iac * 3) + 1, &cp,
4951 HCI_CMD_TIMEOUT);
4952}
4953
4954int hci_update_discoverable_sync(struct hci_dev *hdev)
4955{
4956 int err = 0;
4957
4958 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
4959 err = hci_write_iac_sync(hdev);
4960 if (err)
4961 return err;
4962
4963 err = hci_update_scan_sync(hdev);
4964 if (err)
4965 return err;
4966
4967 err = hci_update_class_sync(hdev);
4968 if (err)
4969 return err;
4970 }
4971
4972 /* Advertising instances don't use the global discoverable setting, so
4973 * only update AD if advertising was enabled using Set Advertising.
4974 */
4975 if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) {
4976 err = hci_update_adv_data_sync(hdev, 0x00);
4977 if (err)
4978 return err;
4979
4980 /* Discoverable mode affects the local advertising
4981 * address in limited privacy mode.
4982 */
4983 if (hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY)) {
4984 if (ext_adv_capable(hdev))
4985 err = hci_start_ext_adv_sync(hdev, 0x00);
4986 else
4987 err = hci_enable_advertising_sync(hdev);
4988 }
4989 }
4990
4991 return err;
4992}
4993
4994static int update_discoverable_sync(struct hci_dev *hdev, void *data)
4995{
4996 return hci_update_discoverable_sync(hdev);
4997}
4998
4999int hci_update_discoverable(struct hci_dev *hdev)
5000{
5001 /* Only queue if it would have any effect */
5002 if (hdev_is_powered(hdev) &&
5003 hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
5004 hci_dev_test_flag(hdev, HCI_DISCOVERABLE) &&
5005 hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY))
5006 return hci_cmd_sync_queue(hdev, update_discoverable_sync, NULL,
5007 NULL);
5008
5009 return 0;
5010}
5011
f056a657
LAD		 5012int hci_update_connectable_sync(struct hci_dev *hdev)
5013{
5014 int err;
5015
5016 err = hci_update_scan_sync(hdev);
5017 if (err)
5018 return err;
5019
5020 /* If BR/EDR is not enabled and we disable advertising as a
5021 * by-product of disabling connectable, we need to update the
5022 * advertising flags.
5023 */
5024 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
5025 err = hci_update_adv_data_sync(hdev, hdev->cur_adv_instance);
5026
5027 /* Update the advertising parameters if necessary */
5028 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
5029 !list_empty(&hdev->adv_instances)) {
5030 if (ext_adv_capable(hdev))
5031 err = hci_start_ext_adv_sync(hdev,
5032 hdev->cur_adv_instance);
5033 else
5034 err = hci_enable_advertising_sync(hdev);
5035
5036 if (err)
5037 return err;
5038 }
5039
5040 return hci_update_passive_scan_sync(hdev);
5041}
5042
abfeea47
LAD		 5043static int hci_inquiry_sync(struct hci_dev *hdev, u8 length)
5044{
5045 const u8 giac[3] = { 0x33, 0x8b, 0x9e };
5046 const u8 liac[3] = { 0x00, 0x8b, 0x9e };
5047 struct hci_cp_inquiry cp;
5048
5049 bt_dev_dbg(hdev, "");
5050
5051 if (hci_dev_test_flag(hdev, HCI_INQUIRY))
5052 return 0;
5053
5054 hci_dev_lock(hdev);
5055 hci_inquiry_cache_flush(hdev);
5056 hci_dev_unlock(hdev);
5057
5058 memset(&cp, 0, sizeof(cp));
5059
5060 if (hdev->discovery.limited)
5061 memcpy(&cp.lap, liac, sizeof(cp.lap));
5062 else
5063 memcpy(&cp.lap, giac, sizeof(cp.lap));
5064
5065 cp.length = length;
5066
5067 return __hci_cmd_sync_status(hdev, HCI_OP_INQUIRY,
5068 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5069}
5070
5071static int hci_active_scan_sync(struct hci_dev *hdev, uint16_t interval)
5072{
5073 u8 own_addr_type;
5074 /* Accept list is not used for discovery */
5075 u8 filter_policy = 0x00;
5076 /* Default is to enable duplicates filter */
5077 u8 filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
5078 int err;
5079
5080 bt_dev_dbg(hdev, "");
5081
5082 /* If controller is scanning, it means the passive scanning is
5083 * running. Thus, we should temporarily stop it in order to set the
5084 * discovery scanning parameters.
5085 */
5086 err = hci_scan_disable_sync(hdev);
5087 if (err) {
5088 bt_dev_err(hdev, "Unable to disable scanning: %d", err);
5089 return err;
5090 }
5091
5092 cancel_interleave_scan(hdev);
5093
5094 /* Pause advertising since active scanning disables address resolution
5095 * which advertising depend on in order to generate its RPAs.
5096 */
5097 if (use_ll_privacy(hdev)) {
5098 err = hci_pause_advertising_sync(hdev);
5099 if (err) {
5100 bt_dev_err(hdev, "pause advertising failed: %d", err);
5101 goto failed;
5102 }
5103 }
5104
5105 /* Disable address resolution while doing active scanning since the
5106 * accept list shall not be used and all reports shall reach the host
5107 * anyway.
5108 */
5109 err = hci_le_set_addr_resolution_enable_sync(hdev, 0x00);
5110 if (err) {
5111 bt_dev_err(hdev, "Unable to disable Address Resolution: %d",
5112 err);
5113 goto failed;
5114 }
5115
5116 /* All active scans will be done with either a resolvable private
5117 * address (when privacy feature has been enabled) or non-resolvable
5118 * private address.
5119 */
5120 err = hci_update_random_address_sync(hdev, true, scan_use_rpa(hdev),
5121 &own_addr_type);
5122 if (err < 0)
5123 own_addr_type = ADDR_LE_DEV_PUBLIC;
5124
5125 if (hci_is_adv_monitoring(hdev)) {
5126 /* Duplicate filter should be disabled when some advertisement
5127 * monitor is activated, otherwise AdvMon can only receive one
5128 * advertisement for one peer(*) during active scanning, and
5129 * might report loss to these peers.
5130 *
5131 * Note that different controllers have different meanings of
5132 * |duplicate|. Some of them consider packets with the same
5133 * address as duplicate, and others consider packets with the
5134 * same address and the same RSSI as duplicate. Although in the
5135 * latter case we don't need to disable duplicate filter, but
5136 * it is common to have active scanning for a short period of
5137 * time, the power impact should be neglectable.
5138 */
5139 filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
5140 }
5141
5142 err = hci_start_scan_sync(hdev, LE_SCAN_ACTIVE, interval,
5143 hdev->le_scan_window_discovery,
5144 own_addr_type, filter_policy, filter_dup);
5145 if (!err)
5146 return err;
5147
5148failed:
5149 /* Resume advertising if it was paused */
5150 if (use_ll_privacy(hdev))
5151 hci_resume_advertising_sync(hdev);
5152
5153 /* Resume passive scanning */
5154 hci_update_passive_scan_sync(hdev);
5155 return err;
5156}
5157
5158static int hci_start_interleaved_discovery_sync(struct hci_dev *hdev)
5159{
5160 int err;
5161
5162 bt_dev_dbg(hdev, "");
5163
5164 err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery * 2);
5165 if (err)
5166 return err;
5167
5168 return hci_inquiry_sync(hdev, DISCOV_BREDR_INQUIRY_LEN);
5169}
5170
5171int hci_start_discovery_sync(struct hci_dev *hdev)
5172{
5173 unsigned long timeout;
5174 int err;
5175
5176 bt_dev_dbg(hdev, "type %u", hdev->discovery.type);
5177
5178 switch (hdev->discovery.type) {
5179 case DISCOV_TYPE_BREDR:
5180 return hci_inquiry_sync(hdev, DISCOV_BREDR_INQUIRY_LEN);
5181 case DISCOV_TYPE_INTERLEAVED:
5182 /* When running simultaneous discovery, the LE scanning time
5183 * should occupy the whole discovery time sine BR/EDR inquiry
5184 * and LE scanning are scheduled by the controller.
5185 *
5186 * For interleaving discovery in comparison, BR/EDR inquiry
5187 * and LE scanning are done sequentially with separate
5188 * timeouts.
5189 */
5190 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY,
5191 &hdev->quirks)) {
5192 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
5193 /* During simultaneous discovery, we double LE scan
5194 * interval. We must leave some time for the controller
5195 * to do BR/EDR inquiry.
5196 */
5197 err = hci_start_interleaved_discovery_sync(hdev);
5198 break;
5199 }
5200
5201 timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout);
5202 err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery);
5203 break;
5204 case DISCOV_TYPE_LE:
5205 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
5206 err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery);
5207 break;
5208 default:
5209 return -EINVAL;
5210 }
5211
5212 if (err)
5213 return err;
5214
5215 bt_dev_dbg(hdev, "timeout %u ms", jiffies_to_msecs(timeout));
5216
5217 /* When service discovery is used and the controller has a
5218 * strict duplicate filter, it is important to remember the
5219 * start and duration of the scan. This is required for
5220 * restarting scanning during the discovery phase.
5221 */
5222 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) &&
5223 hdev->discovery.result_filtering) {
5224 hdev->discovery.scan_start = jiffies;
5225 hdev->discovery.scan_duration = timeout;
5226 }
5227
5228 queue_delayed_work(hdev->req_workqueue, &hdev->le_scan_disable,
5229 timeout);
abfeea47
LAD		 5230 return 0;
5231}
182ee45d
LAD		 5232
5233static void hci_suspend_monitor_sync(struct hci_dev *hdev)
5234{
5235 switch (hci_get_adv_monitor_offload_ext(hdev)) {
5236 case HCI_ADV_MONITOR_EXT_MSFT:
5237 msft_suspend_sync(hdev);
5238 break;
5239 default:
5240 return;
5241 }
5242}
5243
5244/* This function disables discovery and mark it as paused */
5245static int hci_pause_discovery_sync(struct hci_dev *hdev)
5246{
5247 int old_state = hdev->discovery.state;
5248 int err;
5249
5250 /* If discovery already stopped/stopping/paused there nothing to do */
5251 if (old_state == DISCOVERY_STOPPED || old_state == DISCOVERY_STOPPING ||
5252 hdev->discovery_paused)
5253 return 0;
5254
5255 hci_discovery_set_state(hdev, DISCOVERY_STOPPING);
5256 err = hci_stop_discovery_sync(hdev);
5257 if (err)
5258 return err;
5259
5260 hdev->discovery_paused = true;
5261 hdev->discovery_old_state = old_state;
5262 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
5263
5264 return 0;
5265}
5266
5267static int hci_update_event_filter_sync(struct hci_dev *hdev)
5268{
5269 struct bdaddr_list_with_flags *b;
5270 u8 scan = SCAN_DISABLED;
5271 bool scanning = test_bit(HCI_PSCAN, &hdev->flags);
5272 int err;
5273
5274 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
5275 return 0;
5276
0eaecfb2
IFM		 5277 /* Some fake CSR controllers lock up after setting this type of
5278 * filter, so avoid sending the request altogether.
5279 */
5280 if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks))
5281 return 0;
5282
182ee45d
LAD		 5283 /* Always clear event filter when starting */
5284 hci_clear_event_filter_sync(hdev);
5285
5286 list_for_each_entry(b, &hdev->accept_list, list) {
e1cff700 5287 if (!(b->flags & HCI_CONN_FLAG_REMOTE_WAKEUP))
182ee45d
LAD		 5288 continue;
5289
5290 bt_dev_dbg(hdev, "Adding event filters for %pMR", &b->bdaddr);
5291
5292 err = hci_set_event_filter_sync(hdev, HCI_FLT_CONN_SETUP,
5293 HCI_CONN_SETUP_ALLOW_BDADDR,
5294 &b->bdaddr,
5295 HCI_CONN_SETUP_AUTO_ON);
5296 if (err)
5297 bt_dev_dbg(hdev, "Failed to set event filter for %pMR",
5298 &b->bdaddr);
5299 else
5300 scan = SCAN_PAGE;
5301 }
5302
5303 if (scan && !scanning)
5304 hci_write_scan_enable_sync(hdev, scan);
5305 else if (!scan && scanning)
5306 hci_write_scan_enable_sync(hdev, scan);
5307
5308 return 0;
5309}
5310
3b420553
LAD		 5311/* This function disables scan (BR and LE) and mark it as paused */
5312static int hci_pause_scan_sync(struct hci_dev *hdev)
5313{
5314 if (hdev->scanning_paused)
5315 return 0;
5316
5317 /* Disable page scan if enabled */
5318 if (test_bit(HCI_PSCAN, &hdev->flags))
5319 hci_write_scan_enable_sync(hdev, SCAN_DISABLED);
5320
5321 hci_scan_disable_sync(hdev);
5322
5323 hdev->scanning_paused = true;
5324
5325 return 0;
5326}
5327
182ee45d
LAD		 5328/* This function performs the HCI suspend procedures in the follow order:
5329 *
5330 * Pause discovery (active scanning/inquiry)
5331 * Pause Directed Advertising/Advertising
3b420553 5332 * Pause Scanning (passive scanning in case discovery was not active)
182ee45d
LAD		 5333 * Disconnect all connections
5334 * Set suspend_status to BT_SUSPEND_DISCONNECT if hdev cannot wakeup
5335 * otherwise:
5336 * Update event mask (only set events that are allowed to wake up the host)
5337 * Update event filter (with devices marked with HCI_CONN_FLAG_REMOTE_WAKEUP)
5338 * Update passive scanning (lower duty cycle)
5339 * Set suspend_status to BT_SUSPEND_CONFIGURE_WAKE
5340 */
5341int hci_suspend_sync(struct hci_dev *hdev)
5342{
5343 int err;
5344
5345 /* If marked as suspended there nothing to do */
5346 if (hdev->suspended)
5347 return 0;
5348
5349 /* Mark device as suspended */
5350 hdev->suspended = true;
5351
5352 /* Pause discovery if not already stopped */
5353 hci_pause_discovery_sync(hdev);
5354
5355 /* Pause other advertisements */
5356 hci_pause_advertising_sync(hdev);
5357
182ee45d
LAD		 5358 /* Suspend monitor filters */
5359 hci_suspend_monitor_sync(hdev);
5360
5361 /* Prevent disconnects from causing scanning to be re-enabled */
3b420553 5362 hci_pause_scan_sync(hdev);
182ee45d
LAD		 5363
5364 /* Soft disconnect everything (power off) */
5365 err = hci_disconnect_all_sync(hdev, HCI_ERROR_REMOTE_POWER_OFF);
5366 if (err) {
5367 /* Set state to BT_RUNNING so resume doesn't notify */
5368 hdev->suspend_state = BT_RUNNING;
5369 hci_resume_sync(hdev);
5370 return err;
5371 }
5372
ef61b6ea
APS		 5373 /* Update event mask so only the allowed event can wakeup the host */
5374 hci_set_event_mask_sync(hdev);
5375
182ee45d
LAD		 5376 /* Only configure accept list if disconnect succeeded and wake
5377 * isn't being prevented.
5378 */
5379 if (!hdev->wakeup || !hdev->wakeup(hdev)) {
5380 hdev->suspend_state = BT_SUSPEND_DISCONNECT;
5381 return 0;
5382 }
5383
5384 /* Unpause to take care of updating scanning params */
5385 hdev->scanning_paused = false;
5386
182ee45d
LAD		 5387 /* Enable event filter for paired devices */
5388 hci_update_event_filter_sync(hdev);
5389
5390 /* Update LE passive scan if enabled */
5391 hci_update_passive_scan_sync(hdev);
5392
5393 /* Pause scan changes again. */
5394 hdev->scanning_paused = true;
5395
5396 hdev->suspend_state = BT_SUSPEND_CONFIGURE_WAKE;
5397
5398 return 0;
5399}
5400
5401/* This function resumes discovery */
5402static int hci_resume_discovery_sync(struct hci_dev *hdev)
5403{
5404 int err;
5405
5406 /* If discovery not paused there nothing to do */
5407 if (!hdev->discovery_paused)
5408 return 0;
5409
5410 hdev->discovery_paused = false;
5411
5412 hci_discovery_set_state(hdev, DISCOVERY_STARTING);
5413
5414 err = hci_start_discovery_sync(hdev);
5415
5416 hci_discovery_set_state(hdev, err ? DISCOVERY_STOPPED :
5417 DISCOVERY_FINDING);
5418
5419 return err;
5420}
5421
5422static void hci_resume_monitor_sync(struct hci_dev *hdev)
5423{
5424 switch (hci_get_adv_monitor_offload_ext(hdev)) {
5425 case HCI_ADV_MONITOR_EXT_MSFT:
5426 msft_resume_sync(hdev);
5427 break;
5428 default:
5429 return;
5430 }
5431}
5432
3b420553
LAD		 5433/* This function resume scan and reset paused flag */
5434static int hci_resume_scan_sync(struct hci_dev *hdev)
5435{
5436 if (!hdev->scanning_paused)
5437 return 0;
5438
68253f3c
ZJ		 5439 hdev->scanning_paused = false;
5440
3b420553
LAD		 5441 hci_update_scan_sync(hdev);
5442
5443 /* Reset passive scanning to normal */
5444 hci_update_passive_scan_sync(hdev);
5445
3b420553
LAD		 5446 return 0;
5447}
5448
182ee45d
LAD		 5449/* This function performs the HCI suspend procedures in the follow order:
5450 *
5451 * Restore event mask
5452 * Clear event filter
5453 * Update passive scanning (normal duty cycle)
5454 * Resume Directed Advertising/Advertising
5455 * Resume discovery (active scanning/inquiry)
5456 */
5457int hci_resume_sync(struct hci_dev *hdev)
5458{
5459 /* If not marked as suspended there nothing to do */
5460 if (!hdev->suspended)
5461 return 0;
5462
5463 hdev->suspended = false;
182ee45d
LAD		 5464
5465 /* Restore event mask */
5466 hci_set_event_mask_sync(hdev);
5467
5468 /* Clear any event filters and restore scan state */
5469 hci_clear_event_filter_sync(hdev);
182ee45d 5470
3b420553
LAD		 5471 /* Resume scanning */
5472 hci_resume_scan_sync(hdev);
182ee45d
LAD		 5473
5474 /* Resume monitor filters */
5475 hci_resume_monitor_sync(hdev);
5476
5477 /* Resume other advertisements */
5478 hci_resume_advertising_sync(hdev);
5479
5480 /* Resume discovery */
5481 hci_resume_discovery_sync(hdev);
5482
5483 return 0;
5484}
8e8b92ee
LAD		 5485
5486static bool conn_use_rpa(struct hci_conn *conn)
5487{
5488 struct hci_dev *hdev = conn->hdev;
5489
5490 return hci_dev_test_flag(hdev, HCI_PRIVACY);
5491}
5492
5493static int hci_le_ext_directed_advertising_sync(struct hci_dev *hdev,
5494 struct hci_conn *conn)
5495{
5496 struct hci_cp_le_set_ext_adv_params cp;
5497 int err;
5498 bdaddr_t random_addr;
5499 u8 own_addr_type;
5500
5501 err = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn),
5502 &own_addr_type);
5503 if (err)
5504 return err;
5505
5506 /* Set require_privacy to false so that the remote device has a
5507 * chance of identifying us.
5508 */
5509 err = hci_get_random_address(hdev, false, conn_use_rpa(conn), NULL,
5510 &own_addr_type, &random_addr);
5511 if (err)
5512 return err;
5513
5514 memset(&cp, 0, sizeof(cp));
5515
5516 cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_DIRECT_IND);
5517 cp.own_addr_type = own_addr_type;
5518 cp.channel_map = hdev->le_adv_channel_map;
5519 cp.tx_power = HCI_TX_POWER_INVALID;
5520 cp.primary_phy = HCI_ADV_PHY_1M;
5521 cp.secondary_phy = HCI_ADV_PHY_1M;
5522 cp.handle = 0x00; /* Use instance 0 for directed adv */
5523 cp.own_addr_type = own_addr_type;
5524 cp.peer_addr_type = conn->dst_type;
5525 bacpy(&cp.peer_addr, &conn->dst);
5526
5527 /* As per Core Spec 5.2 Vol 2, PART E, Sec 7.8.53, for
5528 * advertising_event_property LE_LEGACY_ADV_DIRECT_IND
5529 * does not supports advertising data when the advertising set already
5530 * contains some, the controller shall return erroc code 'Invalid
5531 * HCI Command Parameters(0x12).
5532 * So it is required to remove adv set for handle 0x00. since we use
5533 * instance 0 for directed adv.
5534 */
5535 err = hci_remove_ext_adv_instance_sync(hdev, cp.handle, NULL);
5536 if (err)
5537 return err;
5538
5539 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS,
5540 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5541 if (err)
5542 return err;
5543
5544 /* Check if random address need to be updated */
5545 if (own_addr_type == ADDR_LE_DEV_RANDOM &&
5546 bacmp(&random_addr, BDADDR_ANY) &&
5547 bacmp(&random_addr, &hdev->random_addr)) {
5548 err = hci_set_adv_set_random_addr_sync(hdev, 0x00,
5549 &random_addr);
5550 if (err)
5551 return err;
5552 }
5553
5554 return hci_enable_ext_advertising_sync(hdev, 0x00);
5555}
5556
5557static int hci_le_directed_advertising_sync(struct hci_dev *hdev,
5558 struct hci_conn *conn)
5559{
5560 struct hci_cp_le_set_adv_param cp;
5561 u8 status;
5562 u8 own_addr_type;
5563 u8 enable;
5564
5565 if (ext_adv_capable(hdev))
5566 return hci_le_ext_directed_advertising_sync(hdev, conn);
5567
5568 /* Clear the HCI_LE_ADV bit temporarily so that the
5569 * hci_update_random_address knows that it's safe to go ahead
5570 * and write a new random address. The flag will be set back on
5571 * as soon as the SET_ADV_ENABLE HCI command completes.
5572 */
5573 hci_dev_clear_flag(hdev, HCI_LE_ADV);
5574
5575 /* Set require_privacy to false so that the remote device has a
5576 * chance of identifying us.
5577 */
5578 status = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn),
5579 &own_addr_type);
5580 if (status)
5581 return status;
5582
5583 memset(&cp, 0, sizeof(cp));
5584
5585 /* Some controllers might reject command if intervals are not
5586 * within range for undirected advertising.
5587 * BCM20702A0 is known to be affected by this.
5588 */
5589 cp.min_interval = cpu_to_le16(0x0020);
5590 cp.max_interval = cpu_to_le16(0x0020);
5591
5592 cp.type = LE_ADV_DIRECT_IND;
5593 cp.own_address_type = own_addr_type;
5594 cp.direct_addr_type = conn->dst_type;
5595 bacpy(&cp.direct_addr, &conn->dst);
5596 cp.channel_map = hdev->le_adv_channel_map;
5597
5598 status = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_PARAM,
5599 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5600 if (status)
5601 return status;
5602
5603 enable = 0x01;
5604
5605 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
5606 sizeof(enable), &enable, HCI_CMD_TIMEOUT);
5607}
5608
5609static void set_ext_conn_params(struct hci_conn *conn,
5610 struct hci_cp_le_ext_conn_param *p)
5611{
5612 struct hci_dev *hdev = conn->hdev;
5613
5614 memset(p, 0, sizeof(*p));
5615
5616 p->scan_interval = cpu_to_le16(hdev->le_scan_int_connect);
5617 p->scan_window = cpu_to_le16(hdev->le_scan_window_connect);
5618 p->conn_interval_min = cpu_to_le16(conn->le_conn_min_interval);
5619 p->conn_interval_max = cpu_to_le16(conn->le_conn_max_interval);
5620 p->conn_latency = cpu_to_le16(conn->le_conn_latency);
5621 p->supervision_timeout = cpu_to_le16(conn->le_supv_timeout);
5622 p->min_ce_len = cpu_to_le16(0x0000);
5623 p->max_ce_len = cpu_to_le16(0x0000);
5624}
5625
89a0b8b9
LAD		 5626static int hci_le_ext_create_conn_sync(struct hci_dev *hdev,
5627 struct hci_conn *conn, u8 own_addr_type)
8e8b92ee
LAD		 5628{
5629 struct hci_cp_le_ext_create_conn *cp;
5630 struct hci_cp_le_ext_conn_param *p;
5631 u8 data[sizeof(*cp) + sizeof(*p) * 3];
5632 u32 plen;
5633
5634 cp = (void *)data;
5635 p = (void *)cp->data;
5636
5637 memset(cp, 0, sizeof(*cp));
5638
5639 bacpy(&cp->peer_addr, &conn->dst);
5640 cp->peer_addr_type = conn->dst_type;
5641 cp->own_addr_type = own_addr_type;
5642
5643 plen = sizeof(*cp);
5644
5645 if (scan_1m(hdev)) {
5646 cp->phys |= LE_SCAN_PHY_1M;
5647 set_ext_conn_params(conn, p);
5648
5649 p++;
5650 plen += sizeof(*p);
5651 }
5652
5653 if (scan_2m(hdev)) {
5654 cp->phys |= LE_SCAN_PHY_2M;
5655 set_ext_conn_params(conn, p);
5656
5657 p++;
5658 plen += sizeof(*p);
5659 }
5660
5661 if (scan_coded(hdev)) {
5662 cp->phys |= LE_SCAN_PHY_CODED;
5663 set_ext_conn_params(conn, p);
5664
5665 plen += sizeof(*p);
5666 }
5667
6cd29ec6
LAD		 5668 return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_EXT_CREATE_CONN,
5669 plen, data,
5670 HCI_EV_LE_ENHANCED_CONN_COMPLETE,
a56a1138 5671 conn->conn_timeout, NULL);
8e8b92ee
LAD		 5672}
5673
5674int hci_le_create_conn_sync(struct hci_dev *hdev, struct hci_conn *conn)
5675{
5676 struct hci_cp_le_create_conn cp;
5677 struct hci_conn_params *params;
5678 u8 own_addr_type;
5679 int err;
5680
8e8b92ee
LAD		 5681 /* If requested to connect as peripheral use directed advertising */
5682 if (conn->role == HCI_ROLE_SLAVE) {
76d0685b
LAD		 5683 /* If we're active scanning and simultaneous roles is not
5684 * enabled simply reject the attempt.
8e8b92ee
LAD		 5685 */
5686 if (hci_dev_test_flag(hdev, HCI_LE_SCAN) &&
4fc9857a 5687 hdev->le_scan_type == LE_SCAN_ACTIVE &&
76d0685b 5688 !hci_dev_test_flag(hdev, HCI_LE_SIMULTANEOUS_ROLES)) {
8e8b92ee
LAD		 5689 hci_conn_del(conn);
5690 return -EBUSY;
5691 }
5692
4fc9857a
LAD		 5693 /* Pause advertising while doing directed advertising. */
5694 hci_pause_advertising_sync(hdev);
5695
8e8b92ee
LAD		 5696 err = hci_le_directed_advertising_sync(hdev, conn);
5697 goto done;
5698 }
5699
76d0685b
LAD		 5700 /* Disable advertising if simultaneous roles is not in use. */
5701 if (!hci_dev_test_flag(hdev, HCI_LE_SIMULTANEOUS_ROLES))
4fc9857a
LAD		 5702 hci_pause_advertising_sync(hdev);
5703
8e8b92ee
LAD		 5704 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
5705 if (params) {
5706 conn->le_conn_min_interval = params->conn_min_interval;
5707 conn->le_conn_max_interval = params->conn_max_interval;
5708 conn->le_conn_latency = params->conn_latency;
5709 conn->le_supv_timeout = params->supervision_timeout;
5710 } else {
5711 conn->le_conn_min_interval = hdev->le_conn_min_interval;
5712 conn->le_conn_max_interval = hdev->le_conn_max_interval;
5713 conn->le_conn_latency = hdev->le_conn_latency;
5714 conn->le_supv_timeout = hdev->le_supv_timeout;
5715 }
5716
5717 /* If controller is scanning, we stop it since some controllers are
5718 * not able to scan and connect at the same time. Also set the
5719 * HCI_LE_SCAN_INTERRUPTED flag so that the command complete
5720 * handler for scan disabling knows to set the correct discovery
5721 * state.
5722 */
5723 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
5724 hci_scan_disable_sync(hdev);
5725 hci_dev_set_flag(hdev, HCI_LE_SCAN_INTERRUPTED);
5726 }
5727
5728 /* Update random address, but set require_privacy to false so
5729 * that we never connect with an non-resolvable address.
5730 */
5731 err = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn),
5732 &own_addr_type);
5733 if (err)
5734 goto done;
5735
5736 if (use_ext_conn(hdev)) {
5737 err = hci_le_ext_create_conn_sync(hdev, conn, own_addr_type);
5738 goto done;
5739 }
5740
5741 memset(&cp, 0, sizeof(cp));
5742
5743 cp.scan_interval = cpu_to_le16(hdev->le_scan_int_connect);
5744 cp.scan_window = cpu_to_le16(hdev->le_scan_window_connect);
5745
5746 bacpy(&cp.peer_addr, &conn->dst);
5747 cp.peer_addr_type = conn->dst_type;
5748 cp.own_address_type = own_addr_type;
5749 cp.conn_interval_min = cpu_to_le16(conn->le_conn_min_interval);
5750 cp.conn_interval_max = cpu_to_le16(conn->le_conn_max_interval);
5751 cp.conn_latency = cpu_to_le16(conn->le_conn_latency);
5752 cp.supervision_timeout = cpu_to_le16(conn->le_supv_timeout);
5753 cp.min_ce_len = cpu_to_le16(0x0000);
5754 cp.max_ce_len = cpu_to_le16(0x0000);
5755
a56a1138
LAD		 5756 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2261:
5757 *
5758 * If this event is unmasked and the HCI_LE_Connection_Complete event
5759 * is unmasked, only the HCI_LE_Enhanced_Connection_Complete event is
5760 * sent when a new connection has been created.
5761 */
6cd29ec6 5762 err = __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_CREATE_CONN,
a56a1138
LAD		 5763 sizeof(cp), &cp,
5764 use_enhanced_conn_complete(hdev) ?
5765 HCI_EV_LE_ENHANCED_CONN_COMPLETE :
5766 HCI_EV_LE_CONN_COMPLETE,
5767 conn->conn_timeout, NULL);
8e8b92ee
LAD		 5768
5769done:
4fc9857a 5770 /* Re-enable advertising after the connection attempt is finished. */
8e8b92ee
LAD		 5771 hci_resume_advertising_sync(hdev);
5772 return err;
5773}
26afbd82
LAD		 5774
5775int hci_le_remove_cig_sync(struct hci_dev *hdev, u8 handle)
5776{
5777 struct hci_cp_le_remove_cig cp;
5778
5779 memset(&cp, 0, sizeof(cp));
5780 cp.cig_id = handle;
5781
5782 return __hci_cmd_sync_status(hdev, HCI_OP_LE_REMOVE_CIG, sizeof(cp),
5783 &cp, HCI_CMD_TIMEOUT);
5784}
eca0ae4a
LAD		 5785
5786int hci_le_big_terminate_sync(struct hci_dev *hdev, u8 handle)
5787{
5788 struct hci_cp_le_big_term_sync cp;
5789
5790 memset(&cp, 0, sizeof(cp));
5791 cp.handle = handle;
5792
5793 return __hci_cmd_sync_status(hdev, HCI_OP_LE_BIG_TERM_SYNC,
5794 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5795}
5796
5797int hci_le_pa_terminate_sync(struct hci_dev *hdev, u16 handle)
5798{
5799 struct hci_cp_le_pa_term_sync cp;
5800
5801 memset(&cp, 0, sizeof(cp));
5802 cp.handle = cpu_to_le16(handle);
5803
5804 return __hci_cmd_sync_status(hdev, HCI_OP_LE_PA_TERM_SYNC,
5805 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5806}
Linux 6.x block layer and io_uring tree(s)