1 // SPDX-License-Identifier: GPL-2.0
3 * BlueZ - Bluetooth protocol stack for Linux
5 * Copyright (C) 2021 Intel Corporation
8 #include <linux/property.h>
10 #include <net/bluetooth/bluetooth.h>
11 #include <net/bluetooth/hci_core.h>
12 #include <net/bluetooth/mgmt.h>
14 #include "hci_request.h"
15 #include "hci_codec.h"
16 #include "hci_debugfs.h"
23 static void hci_cmd_sync_complete(struct hci_dev *hdev, u8 result, u16 opcode,
26 bt_dev_dbg(hdev, "result 0x%2.2x", result);
28 if (hdev->req_status != HCI_REQ_PEND)
31 hdev->req_result = result;
32 hdev->req_status = HCI_REQ_DONE;
35 struct sock *sk = hci_skb_sk(skb);
37 /* Drop sk reference if set */
41 hdev->req_skb = skb_get(skb);
44 wake_up_interruptible(&hdev->req_wait_q);
47 static struct sk_buff *hci_cmd_sync_alloc(struct hci_dev *hdev, u16 opcode,
48 u32 plen, const void *param,
51 int len = HCI_COMMAND_HDR_SIZE + plen;
52 struct hci_command_hdr *hdr;
55 skb = bt_skb_alloc(len, GFP_ATOMIC);
59 hdr = skb_put(skb, HCI_COMMAND_HDR_SIZE);
60 hdr->opcode = cpu_to_le16(opcode);
64 skb_put_data(skb, param, plen);
66 bt_dev_dbg(hdev, "skb len %d", skb->len);
68 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
69 hci_skb_opcode(skb) = opcode;
71 /* Grab a reference if command needs to be associated with a sock (e.g.
72 * likely mgmt socket that initiated the command).
82 static void hci_cmd_sync_add(struct hci_request *req, u16 opcode, u32 plen,
83 const void *param, u8 event, struct sock *sk)
85 struct hci_dev *hdev = req->hdev;
88 bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen);
90 /* If an error occurred during request building, there is no point in
91 * queueing the HCI command. We can simply return.
96 skb = hci_cmd_sync_alloc(hdev, opcode, plen, param, sk);
98 bt_dev_err(hdev, "no memory for command (opcode 0x%4.4x)",
104 if (skb_queue_empty(&req->cmd_q))
105 bt_cb(skb)->hci.req_flags |= HCI_REQ_START;
107 hci_skb_event(skb) = event;
109 skb_queue_tail(&req->cmd_q, skb);
112 static int hci_cmd_sync_run(struct hci_request *req)
114 struct hci_dev *hdev = req->hdev;
118 bt_dev_dbg(hdev, "length %u", skb_queue_len(&req->cmd_q));
120 /* If an error occurred during request building, remove all HCI
121 * commands queued on the HCI request queue.
124 skb_queue_purge(&req->cmd_q);
128 /* Do not allow empty requests */
129 if (skb_queue_empty(&req->cmd_q))
132 skb = skb_peek_tail(&req->cmd_q);
133 bt_cb(skb)->hci.req_complete_skb = hci_cmd_sync_complete;
134 bt_cb(skb)->hci.req_flags |= HCI_REQ_SKB;
136 spin_lock_irqsave(&hdev->cmd_q.lock, flags);
137 skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q);
138 spin_unlock_irqrestore(&hdev->cmd_q.lock, flags);
140 queue_work(hdev->workqueue, &hdev->cmd_work);
145 /* This function requires the caller holds hdev->req_lock. */
146 struct sk_buff *__hci_cmd_sync_sk(struct hci_dev *hdev, u16 opcode, u32 plen,
147 const void *param, u8 event, u32 timeout,
150 struct hci_request req;
154 bt_dev_dbg(hdev, "Opcode 0x%4x", opcode);
156 hci_req_init(&req, hdev);
158 hci_cmd_sync_add(&req, opcode, plen, param, event, sk);
160 hdev->req_status = HCI_REQ_PEND;
162 err = hci_cmd_sync_run(&req);
166 err = wait_event_interruptible_timeout(hdev->req_wait_q,
167 hdev->req_status != HCI_REQ_PEND,
170 if (err == -ERESTARTSYS)
171 return ERR_PTR(-EINTR);
173 switch (hdev->req_status) {
175 err = -bt_to_errno(hdev->req_result);
178 case HCI_REQ_CANCELED:
179 err = -hdev->req_result;
187 hdev->req_status = 0;
188 hdev->req_result = 0;
190 hdev->req_skb = NULL;
192 bt_dev_dbg(hdev, "end: err %d", err);
201 EXPORT_SYMBOL(__hci_cmd_sync_sk);
203 /* This function requires the caller holds hdev->req_lock. */
204 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
205 const void *param, u32 timeout)
207 return __hci_cmd_sync_sk(hdev, opcode, plen, param, 0, timeout, NULL);
209 EXPORT_SYMBOL(__hci_cmd_sync);
211 /* Send HCI command and wait for command complete event */
212 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
213 const void *param, u32 timeout)
217 if (!test_bit(HCI_UP, &hdev->flags))
218 return ERR_PTR(-ENETDOWN);
220 bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen);
222 hci_req_sync_lock(hdev);
223 skb = __hci_cmd_sync(hdev, opcode, plen, param, timeout);
224 hci_req_sync_unlock(hdev);
228 EXPORT_SYMBOL(hci_cmd_sync);
230 /* This function requires the caller holds hdev->req_lock. */
231 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
232 const void *param, u8 event, u32 timeout)
234 return __hci_cmd_sync_sk(hdev, opcode, plen, param, event, timeout,
237 EXPORT_SYMBOL(__hci_cmd_sync_ev);
239 /* This function requires the caller holds hdev->req_lock. */
240 int __hci_cmd_sync_status_sk(struct hci_dev *hdev, u16 opcode, u32 plen,
241 const void *param, u8 event, u32 timeout,
247 skb = __hci_cmd_sync_sk(hdev, opcode, plen, param, event, timeout, sk);
249 bt_dev_err(hdev, "Opcode 0x%4x failed: %ld", opcode,
254 /* If command return a status event skb will be set to NULL as there are
255 * no parameters, in case of failure IS_ERR(skb) would have be set to
256 * the actual error would be found with PTR_ERR(skb).
261 status = skb->data[0];
267 EXPORT_SYMBOL(__hci_cmd_sync_status_sk);
269 int __hci_cmd_sync_status(struct hci_dev *hdev, u16 opcode, u32 plen,
270 const void *param, u32 timeout)
272 return __hci_cmd_sync_status_sk(hdev, opcode, plen, param, 0, timeout,
275 EXPORT_SYMBOL(__hci_cmd_sync_status);
277 static void hci_cmd_sync_work(struct work_struct *work)
279 struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_sync_work);
281 bt_dev_dbg(hdev, "");
283 /* Dequeue all entries and run them */
285 struct hci_cmd_sync_work_entry *entry;
287 mutex_lock(&hdev->cmd_sync_work_lock);
288 entry = list_first_entry_or_null(&hdev->cmd_sync_work_list,
289 struct hci_cmd_sync_work_entry,
292 list_del(&entry->list);
293 mutex_unlock(&hdev->cmd_sync_work_lock);
298 bt_dev_dbg(hdev, "entry %p", entry);
303 hci_req_sync_lock(hdev);
304 err = entry->func(hdev, entry->data);
306 entry->destroy(hdev, entry->data, err);
307 hci_req_sync_unlock(hdev);
314 static void hci_cmd_sync_cancel_work(struct work_struct *work)
316 struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_sync_cancel_work);
318 cancel_delayed_work_sync(&hdev->cmd_timer);
319 cancel_delayed_work_sync(&hdev->ncmd_timer);
320 atomic_set(&hdev->cmd_cnt, 1);
322 wake_up_interruptible(&hdev->req_wait_q);
325 static int hci_scan_disable_sync(struct hci_dev *hdev);
326 static int scan_disable_sync(struct hci_dev *hdev, void *data)
328 return hci_scan_disable_sync(hdev);
331 static int hci_inquiry_sync(struct hci_dev *hdev, u8 length);
332 static int interleaved_inquiry_sync(struct hci_dev *hdev, void *data)
334 return hci_inquiry_sync(hdev, DISCOV_INTERLEAVED_INQUIRY_LEN);
337 static void le_scan_disable(struct work_struct *work)
339 struct hci_dev *hdev = container_of(work, struct hci_dev,
340 le_scan_disable.work);
343 bt_dev_dbg(hdev, "");
346 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
349 cancel_delayed_work(&hdev->le_scan_restart);
351 status = hci_cmd_sync_queue(hdev, scan_disable_sync, NULL, NULL);
353 bt_dev_err(hdev, "failed to disable LE scan: %d", status);
357 hdev->discovery.scan_start = 0;
359 /* If we were running LE only scan, change discovery state. If
360 * we were running both LE and BR/EDR inquiry simultaneously,
361 * and BR/EDR inquiry is already finished, stop discovery,
362 * otherwise BR/EDR inquiry will stop discovery when finished.
363 * If we will resolve remote device name, do not change
367 if (hdev->discovery.type == DISCOV_TYPE_LE)
370 if (hdev->discovery.type != DISCOV_TYPE_INTERLEAVED)
373 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) {
374 if (!test_bit(HCI_INQUIRY, &hdev->flags) &&
375 hdev->discovery.state != DISCOVERY_RESOLVING)
381 status = hci_cmd_sync_queue(hdev, interleaved_inquiry_sync, NULL, NULL);
383 bt_dev_err(hdev, "inquiry failed: status %d", status);
390 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
393 hci_dev_unlock(hdev);
396 static int hci_le_set_scan_enable_sync(struct hci_dev *hdev, u8 val,
398 static int hci_le_scan_restart_sync(struct hci_dev *hdev)
400 /* If controller is not scanning we are done. */
401 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
404 if (hdev->scanning_paused) {
405 bt_dev_dbg(hdev, "Scanning is paused for suspend");
409 hci_le_set_scan_enable_sync(hdev, LE_SCAN_DISABLE, 0x00);
410 return hci_le_set_scan_enable_sync(hdev, LE_SCAN_ENABLE,
411 LE_SCAN_FILTER_DUP_ENABLE);
414 static int le_scan_restart_sync(struct hci_dev *hdev, void *data)
416 return hci_le_scan_restart_sync(hdev);
419 static void le_scan_restart(struct work_struct *work)
421 struct hci_dev *hdev = container_of(work, struct hci_dev,
422 le_scan_restart.work);
423 unsigned long timeout, duration, scan_start, now;
426 bt_dev_dbg(hdev, "");
430 status = hci_cmd_sync_queue(hdev, le_scan_restart_sync, NULL, NULL);
432 bt_dev_err(hdev, "failed to restart LE scan: status %d",
437 if (!test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) ||
438 !hdev->discovery.scan_start)
441 /* When the scan was started, hdev->le_scan_disable has been queued
442 * after duration from scan_start. During scan restart this job
443 * has been canceled, and we need to queue it again after proper
444 * timeout, to make sure that scan does not run indefinitely.
446 duration = hdev->discovery.scan_duration;
447 scan_start = hdev->discovery.scan_start;
449 if (now - scan_start <= duration) {
452 if (now >= scan_start)
453 elapsed = now - scan_start;
455 elapsed = ULONG_MAX - scan_start + now;
457 timeout = duration - elapsed;
462 queue_delayed_work(hdev->req_workqueue,
463 &hdev->le_scan_disable, timeout);
466 hci_dev_unlock(hdev);
469 static int reenable_adv_sync(struct hci_dev *hdev, void *data)
471 bt_dev_dbg(hdev, "");
473 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
474 list_empty(&hdev->adv_instances))
477 if (hdev->cur_adv_instance) {
478 return hci_schedule_adv_instance_sync(hdev,
479 hdev->cur_adv_instance,
482 if (ext_adv_capable(hdev)) {
483 hci_start_ext_adv_sync(hdev, 0x00);
485 hci_update_adv_data_sync(hdev, 0x00);
486 hci_update_scan_rsp_data_sync(hdev, 0x00);
487 hci_enable_advertising_sync(hdev);
494 static void reenable_adv(struct work_struct *work)
496 struct hci_dev *hdev = container_of(work, struct hci_dev,
500 bt_dev_dbg(hdev, "");
504 status = hci_cmd_sync_queue(hdev, reenable_adv_sync, NULL, NULL);
506 bt_dev_err(hdev, "failed to reenable ADV: %d", status);
508 hci_dev_unlock(hdev);
511 static void cancel_adv_timeout(struct hci_dev *hdev)
513 if (hdev->adv_instance_timeout) {
514 hdev->adv_instance_timeout = 0;
515 cancel_delayed_work(&hdev->adv_instance_expire);
519 /* For a single instance:
520 * - force == true: The instance will be removed even when its remaining
521 * lifetime is not zero.
522 * - force == false: the instance will be deactivated but kept stored unless
523 * the remaining lifetime is zero.
525 * For instance == 0x00:
526 * - force == true: All instances will be removed regardless of their timeout
528 * - force == false: Only instances that have a timeout will be removed.
530 int hci_clear_adv_instance_sync(struct hci_dev *hdev, struct sock *sk,
531 u8 instance, bool force)
533 struct adv_info *adv_instance, *n, *next_instance = NULL;
537 /* Cancel any timeout concerning the removed instance(s). */
538 if (!instance || hdev->cur_adv_instance == instance)
539 cancel_adv_timeout(hdev);
541 /* Get the next instance to advertise BEFORE we remove
542 * the current one. This can be the same instance again
543 * if there is only one instance.
545 if (instance && hdev->cur_adv_instance == instance)
546 next_instance = hci_get_next_instance(hdev, instance);
548 if (instance == 0x00) {
549 list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances,
551 if (!(force || adv_instance->timeout))
554 rem_inst = adv_instance->instance;
555 err = hci_remove_adv_instance(hdev, rem_inst);
557 mgmt_advertising_removed(sk, hdev, rem_inst);
560 adv_instance = hci_find_adv_instance(hdev, instance);
562 if (force || (adv_instance && adv_instance->timeout &&
563 !adv_instance->remaining_time)) {
564 /* Don't advertise a removed instance. */
566 next_instance->instance == instance)
567 next_instance = NULL;
569 err = hci_remove_adv_instance(hdev, instance);
571 mgmt_advertising_removed(sk, hdev, instance);
575 if (!hdev_is_powered(hdev) || hci_dev_test_flag(hdev, HCI_ADVERTISING))
578 if (next_instance && !ext_adv_capable(hdev))
579 return hci_schedule_adv_instance_sync(hdev,
580 next_instance->instance,
586 static int adv_timeout_expire_sync(struct hci_dev *hdev, void *data)
588 u8 instance = *(u8 *)data;
592 hci_clear_adv_instance_sync(hdev, NULL, instance, false);
594 if (list_empty(&hdev->adv_instances))
595 return hci_disable_advertising_sync(hdev);
600 static void adv_timeout_expire(struct work_struct *work)
603 struct hci_dev *hdev = container_of(work, struct hci_dev,
604 adv_instance_expire.work);
606 bt_dev_dbg(hdev, "");
610 hdev->adv_instance_timeout = 0;
612 if (hdev->cur_adv_instance == 0x00)
615 inst_ptr = kmalloc(1, GFP_KERNEL);
619 *inst_ptr = hdev->cur_adv_instance;
620 hci_cmd_sync_queue(hdev, adv_timeout_expire_sync, inst_ptr, NULL);
623 hci_dev_unlock(hdev);
626 void hci_cmd_sync_init(struct hci_dev *hdev)
628 INIT_WORK(&hdev->cmd_sync_work, hci_cmd_sync_work);
629 INIT_LIST_HEAD(&hdev->cmd_sync_work_list);
630 mutex_init(&hdev->cmd_sync_work_lock);
632 INIT_WORK(&hdev->cmd_sync_cancel_work, hci_cmd_sync_cancel_work);
633 INIT_WORK(&hdev->reenable_adv_work, reenable_adv);
634 INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable);
635 INIT_DELAYED_WORK(&hdev->le_scan_restart, le_scan_restart);
636 INIT_DELAYED_WORK(&hdev->adv_instance_expire, adv_timeout_expire);
639 void hci_cmd_sync_clear(struct hci_dev *hdev)
641 struct hci_cmd_sync_work_entry *entry, *tmp;
643 cancel_work_sync(&hdev->cmd_sync_work);
644 cancel_work_sync(&hdev->reenable_adv_work);
646 mutex_lock(&hdev->cmd_sync_work_lock);
647 list_for_each_entry_safe(entry, tmp, &hdev->cmd_sync_work_list, list) {
649 entry->destroy(hdev, entry->data, -ECANCELED);
651 list_del(&entry->list);
654 mutex_unlock(&hdev->cmd_sync_work_lock);
657 void __hci_cmd_sync_cancel(struct hci_dev *hdev, int err)
659 bt_dev_dbg(hdev, "err 0x%2.2x", err);
661 if (hdev->req_status == HCI_REQ_PEND) {
662 hdev->req_result = err;
663 hdev->req_status = HCI_REQ_CANCELED;
665 cancel_delayed_work_sync(&hdev->cmd_timer);
666 cancel_delayed_work_sync(&hdev->ncmd_timer);
667 atomic_set(&hdev->cmd_cnt, 1);
669 wake_up_interruptible(&hdev->req_wait_q);
673 void hci_cmd_sync_cancel(struct hci_dev *hdev, int err)
675 bt_dev_dbg(hdev, "err 0x%2.2x", err);
677 if (hdev->req_status == HCI_REQ_PEND) {
678 hdev->req_result = err;
679 hdev->req_status = HCI_REQ_CANCELED;
681 queue_work(hdev->workqueue, &hdev->cmd_sync_cancel_work);
684 EXPORT_SYMBOL(hci_cmd_sync_cancel);
686 int hci_cmd_sync_queue(struct hci_dev *hdev, hci_cmd_sync_work_func_t func,
687 void *data, hci_cmd_sync_work_destroy_t destroy)
689 struct hci_cmd_sync_work_entry *entry;
691 if (hci_dev_test_flag(hdev, HCI_UNREGISTER))
694 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
700 entry->destroy = destroy;
702 mutex_lock(&hdev->cmd_sync_work_lock);
703 list_add_tail(&entry->list, &hdev->cmd_sync_work_list);
704 mutex_unlock(&hdev->cmd_sync_work_lock);
706 queue_work(hdev->req_workqueue, &hdev->cmd_sync_work);
710 EXPORT_SYMBOL(hci_cmd_sync_queue);
712 int hci_update_eir_sync(struct hci_dev *hdev)
714 struct hci_cp_write_eir cp;
716 bt_dev_dbg(hdev, "");
718 if (!hdev_is_powered(hdev))
721 if (!lmp_ext_inq_capable(hdev))
724 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
727 if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
730 memset(&cp, 0, sizeof(cp));
732 eir_create(hdev, cp.data);
734 if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0)
737 memcpy(hdev->eir, cp.data, sizeof(cp.data));
739 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp,
743 static u8 get_service_classes(struct hci_dev *hdev)
745 struct bt_uuid *uuid;
748 list_for_each_entry(uuid, &hdev->uuids, list)
749 val |= uuid->svc_hint;
754 int hci_update_class_sync(struct hci_dev *hdev)
758 bt_dev_dbg(hdev, "");
760 if (!hdev_is_powered(hdev))
763 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
766 if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
769 cod[0] = hdev->minor_class;
770 cod[1] = hdev->major_class;
771 cod[2] = get_service_classes(hdev);
773 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
776 if (memcmp(cod, hdev->dev_class, 3) == 0)
779 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CLASS_OF_DEV,
780 sizeof(cod), cod, HCI_CMD_TIMEOUT);
783 static bool is_advertising_allowed(struct hci_dev *hdev, bool connectable)
785 /* If there is no connection we are OK to advertise. */
786 if (hci_conn_num(hdev, LE_LINK) == 0)
789 /* Check le_states if there is any connection in peripheral role. */
790 if (hdev->conn_hash.le_num_peripheral > 0) {
791 /* Peripheral connection state and non connectable mode
794 if (!connectable && !(hdev->le_states[2] & 0x10))
797 /* Peripheral connection state and connectable mode bit 38
798 * and scannable bit 21.
800 if (connectable && (!(hdev->le_states[4] & 0x40) ||
801 !(hdev->le_states[2] & 0x20)))
805 /* Check le_states if there is any connection in central role. */
806 if (hci_conn_num(hdev, LE_LINK) != hdev->conn_hash.le_num_peripheral) {
807 /* Central connection state and non connectable mode bit 18. */
808 if (!connectable && !(hdev->le_states[2] & 0x02))
811 /* Central connection state and connectable mode bit 35 and
814 if (connectable && (!(hdev->le_states[4] & 0x08) ||
815 !(hdev->le_states[2] & 0x08)))
822 static bool adv_use_rpa(struct hci_dev *hdev, uint32_t flags)
824 /* If privacy is not enabled don't use RPA */
825 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
828 /* If basic privacy mode is enabled use RPA */
829 if (!hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY))
832 /* If limited privacy mode is enabled don't use RPA if we're
833 * both discoverable and bondable.
835 if ((flags & MGMT_ADV_FLAG_DISCOV) &&
836 hci_dev_test_flag(hdev, HCI_BONDABLE))
839 /* We're neither bondable nor discoverable in the limited
840 * privacy mode, therefore use RPA.
845 static int hci_set_random_addr_sync(struct hci_dev *hdev, bdaddr_t *rpa)
847 /* If we're advertising or initiating an LE connection we can't
848 * go ahead and change the random address at this time. This is
849 * because the eventual initiator address used for the
850 * subsequently created connection will be undefined (some
851 * controllers use the new address and others the one we had
852 * when the operation started).
854 * In this kind of scenario skip the update and let the random
855 * address be updated at the next cycle.
857 if (hci_dev_test_flag(hdev, HCI_LE_ADV) ||
858 hci_lookup_le_connect(hdev)) {
859 bt_dev_dbg(hdev, "Deferring random address update");
860 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
864 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_RANDOM_ADDR,
865 6, rpa, HCI_CMD_TIMEOUT);
868 int hci_update_random_address_sync(struct hci_dev *hdev, bool require_privacy,
869 bool rpa, u8 *own_addr_type)
873 /* If privacy is enabled use a resolvable private address. If
874 * current RPA has expired or there is something else than
875 * the current RPA in use, then generate a new one.
878 /* If Controller supports LL Privacy use own address type is
881 if (use_ll_privacy(hdev))
882 *own_addr_type = ADDR_LE_DEV_RANDOM_RESOLVED;
884 *own_addr_type = ADDR_LE_DEV_RANDOM;
886 /* Check if RPA is valid */
890 err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa);
892 bt_dev_err(hdev, "failed to generate new RPA");
896 err = hci_set_random_addr_sync(hdev, &hdev->rpa);
903 /* In case of required privacy without resolvable private address,
904 * use an non-resolvable private address. This is useful for active
905 * scanning and non-connectable advertising.
907 if (require_privacy) {
911 /* The non-resolvable private address is generated
912 * from random six bytes with the two most significant
915 get_random_bytes(&nrpa, 6);
918 /* The non-resolvable private address shall not be
919 * equal to the public address.
921 if (bacmp(&hdev->bdaddr, &nrpa))
925 *own_addr_type = ADDR_LE_DEV_RANDOM;
927 return hci_set_random_addr_sync(hdev, &nrpa);
930 /* If forcing static address is in use or there is no public
931 * address use the static address as random address (but skip
932 * the HCI command if the current random address is already the
935 * In case BR/EDR has been disabled on a dual-mode controller
936 * and a static address has been configured, then use that
937 * address instead of the public BR/EDR address.
939 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
940 !bacmp(&hdev->bdaddr, BDADDR_ANY) ||
941 (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
942 bacmp(&hdev->static_addr, BDADDR_ANY))) {
943 *own_addr_type = ADDR_LE_DEV_RANDOM;
944 if (bacmp(&hdev->static_addr, &hdev->random_addr))
945 return hci_set_random_addr_sync(hdev,
950 /* Neither privacy nor static address is being used so use a
953 *own_addr_type = ADDR_LE_DEV_PUBLIC;
958 static int hci_disable_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance)
960 struct hci_cp_le_set_ext_adv_enable *cp;
961 struct hci_cp_ext_adv_set *set;
962 u8 data[sizeof(*cp) + sizeof(*set) * 1];
965 /* If request specifies an instance that doesn't exist, fail */
967 struct adv_info *adv;
969 adv = hci_find_adv_instance(hdev, instance);
973 /* If not enabled there is nothing to do */
978 memset(data, 0, sizeof(data));
981 set = (void *)cp->data;
983 /* Instance 0x00 indicates all advertising instances will be disabled */
984 cp->num_of_sets = !!instance;
987 set->handle = instance;
989 size = sizeof(*cp) + sizeof(*set) * cp->num_of_sets;
991 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE,
992 size, data, HCI_CMD_TIMEOUT);
995 static int hci_set_adv_set_random_addr_sync(struct hci_dev *hdev, u8 instance,
996 bdaddr_t *random_addr)
998 struct hci_cp_le_set_adv_set_rand_addr cp;
1002 /* Instance 0x00 doesn't have an adv_info, instead it uses
1003 * hdev->random_addr to track its address so whenever it needs
1004 * to be updated this also set the random address since
1005 * hdev->random_addr is shared with scan state machine.
1007 err = hci_set_random_addr_sync(hdev, random_addr);
1012 memset(&cp, 0, sizeof(cp));
1014 cp.handle = instance;
1015 bacpy(&cp.bdaddr, random_addr);
1017 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
1018 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1021 int hci_setup_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance)
1023 struct hci_cp_le_set_ext_adv_params cp;
1026 bdaddr_t random_addr;
1029 struct adv_info *adv;
1033 adv = hci_find_adv_instance(hdev, instance);
1040 /* Updating parameters of an active instance will return a
1041 * Command Disallowed error, so we must first disable the
1042 * instance if it is active.
1044 if (adv && !adv->pending) {
1045 err = hci_disable_ext_adv_instance_sync(hdev, instance);
1050 flags = hci_adv_instance_flags(hdev, instance);
1052 /* If the "connectable" instance flag was not set, then choose between
1053 * ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
1055 connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
1056 mgmt_get_connectable(hdev);
1058 if (!is_advertising_allowed(hdev, connectable))
1061 /* Set require_privacy to true only when non-connectable
1062 * advertising is used. In that case it is fine to use a
1063 * non-resolvable private address.
1065 err = hci_get_random_address(hdev, !connectable,
1066 adv_use_rpa(hdev, flags), adv,
1067 &own_addr_type, &random_addr);
1071 memset(&cp, 0, sizeof(cp));
1074 hci_cpu_to_le24(adv->min_interval, cp.min_interval);
1075 hci_cpu_to_le24(adv->max_interval, cp.max_interval);
1076 cp.tx_power = adv->tx_power;
1078 hci_cpu_to_le24(hdev->le_adv_min_interval, cp.min_interval);
1079 hci_cpu_to_le24(hdev->le_adv_max_interval, cp.max_interval);
1080 cp.tx_power = HCI_ADV_TX_POWER_NO_PREFERENCE;
1083 secondary_adv = (flags & MGMT_ADV_FLAG_SEC_MASK);
1087 cp.evt_properties = cpu_to_le16(LE_EXT_ADV_CONN_IND);
1089 cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_IND);
1090 } else if (hci_adv_instance_is_scannable(hdev, instance) ||
1091 (flags & MGMT_ADV_PARAM_SCAN_RSP)) {
1093 cp.evt_properties = cpu_to_le16(LE_EXT_ADV_SCAN_IND);
1095 cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_SCAN_IND);
1098 cp.evt_properties = cpu_to_le16(LE_EXT_ADV_NON_CONN_IND);
1100 cp.evt_properties = cpu_to_le16(LE_LEGACY_NONCONN_IND);
1103 /* If Own_Address_Type equals 0x02 or 0x03, the Peer_Address parameter
1104 * contains the peer’s Identity Address and the Peer_Address_Type
1105 * parameter contains the peer’s Identity Type (i.e., 0x00 or 0x01).
1106 * These parameters are used to locate the corresponding local IRK in
1107 * the resolving list; this IRK is used to generate their own address
1108 * used in the advertisement.
1110 if (own_addr_type == ADDR_LE_DEV_RANDOM_RESOLVED)
1111 hci_copy_identity_address(hdev, &cp.peer_addr,
1112 &cp.peer_addr_type);
1114 cp.own_addr_type = own_addr_type;
1115 cp.channel_map = hdev->le_adv_channel_map;
1116 cp.handle = instance;
1118 if (flags & MGMT_ADV_FLAG_SEC_2M) {
1119 cp.primary_phy = HCI_ADV_PHY_1M;
1120 cp.secondary_phy = HCI_ADV_PHY_2M;
1121 } else if (flags & MGMT_ADV_FLAG_SEC_CODED) {
1122 cp.primary_phy = HCI_ADV_PHY_CODED;
1123 cp.secondary_phy = HCI_ADV_PHY_CODED;
1125 /* In all other cases use 1M */
1126 cp.primary_phy = HCI_ADV_PHY_1M;
1127 cp.secondary_phy = HCI_ADV_PHY_1M;
1130 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS,
1131 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1135 if ((own_addr_type == ADDR_LE_DEV_RANDOM ||
1136 own_addr_type == ADDR_LE_DEV_RANDOM_RESOLVED) &&
1137 bacmp(&random_addr, BDADDR_ANY)) {
1138 /* Check if random address need to be updated */
1140 if (!bacmp(&random_addr, &adv->random_addr))
1143 if (!bacmp(&random_addr, &hdev->random_addr))
1147 return hci_set_adv_set_random_addr_sync(hdev, instance,
1154 static int hci_set_ext_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
1157 struct hci_cp_le_set_ext_scan_rsp_data cp;
1158 u8 data[HCI_MAX_EXT_AD_LENGTH];
1161 struct adv_info *adv = NULL;
1164 memset(&pdu, 0, sizeof(pdu));
1167 adv = hci_find_adv_instance(hdev, instance);
1168 if (!adv || !adv->scan_rsp_changed)
1172 len = eir_create_scan_rsp(hdev, instance, pdu.data);
1174 pdu.cp.handle = instance;
1175 pdu.cp.length = len;
1176 pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
1177 pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
1179 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_RSP_DATA,
1180 sizeof(pdu.cp) + len, &pdu.cp,
1186 adv->scan_rsp_changed = false;
1188 memcpy(hdev->scan_rsp_data, pdu.data, len);
1189 hdev->scan_rsp_data_len = len;
1195 static int __hci_set_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
1197 struct hci_cp_le_set_scan_rsp_data cp;
1200 memset(&cp, 0, sizeof(cp));
1202 len = eir_create_scan_rsp(hdev, instance, cp.data);
1204 if (hdev->scan_rsp_data_len == len &&
1205 !memcmp(cp.data, hdev->scan_rsp_data, len))
1208 memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));
1209 hdev->scan_rsp_data_len = len;
1213 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_RSP_DATA,
1214 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1217 int hci_update_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
1219 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
1222 if (ext_adv_capable(hdev))
1223 return hci_set_ext_scan_rsp_data_sync(hdev, instance);
1225 return __hci_set_scan_rsp_data_sync(hdev, instance);
1228 int hci_enable_ext_advertising_sync(struct hci_dev *hdev, u8 instance)
1230 struct hci_cp_le_set_ext_adv_enable *cp;
1231 struct hci_cp_ext_adv_set *set;
1232 u8 data[sizeof(*cp) + sizeof(*set) * 1];
1233 struct adv_info *adv;
1236 adv = hci_find_adv_instance(hdev, instance);
1239 /* If already enabled there is nothing to do */
1247 set = (void *)cp->data;
1249 memset(cp, 0, sizeof(*cp));
1252 cp->num_of_sets = 0x01;
1254 memset(set, 0, sizeof(*set));
1256 set->handle = instance;
1258 /* Set duration per instance since controller is responsible for
1261 if (adv && adv->timeout) {
1262 u16 duration = adv->timeout * MSEC_PER_SEC;
1264 /* Time = N * 10 ms */
1265 set->duration = cpu_to_le16(duration / 10);
1268 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE,
1270 sizeof(*set) * cp->num_of_sets,
1271 data, HCI_CMD_TIMEOUT);
1274 int hci_start_ext_adv_sync(struct hci_dev *hdev, u8 instance)
1278 err = hci_setup_ext_adv_instance_sync(hdev, instance);
1282 err = hci_set_ext_scan_rsp_data_sync(hdev, instance);
1286 return hci_enable_ext_advertising_sync(hdev, instance);
1289 static int hci_disable_per_advertising_sync(struct hci_dev *hdev, u8 instance)
1291 struct hci_cp_le_set_per_adv_enable cp;
1293 /* If periodic advertising already disabled there is nothing to do. */
1294 if (!hci_dev_test_flag(hdev, HCI_LE_PER_ADV))
1297 memset(&cp, 0, sizeof(cp));
1300 cp.handle = instance;
1302 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE,
1303 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1306 static int hci_set_per_adv_params_sync(struct hci_dev *hdev, u8 instance,
1307 u16 min_interval, u16 max_interval)
1309 struct hci_cp_le_set_per_adv_params cp;
1311 memset(&cp, 0, sizeof(cp));
1314 min_interval = DISCOV_LE_PER_ADV_INT_MIN;
1317 max_interval = DISCOV_LE_PER_ADV_INT_MAX;
1319 cp.handle = instance;
1320 cp.min_interval = cpu_to_le16(min_interval);
1321 cp.max_interval = cpu_to_le16(max_interval);
1322 cp.periodic_properties = 0x0000;
1324 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS,
1325 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1328 static int hci_set_per_adv_data_sync(struct hci_dev *hdev, u8 instance)
1331 struct hci_cp_le_set_per_adv_data cp;
1332 u8 data[HCI_MAX_PER_AD_LENGTH];
1336 memset(&pdu, 0, sizeof(pdu));
1339 struct adv_info *adv = hci_find_adv_instance(hdev, instance);
1341 if (!adv || !adv->periodic)
1345 len = eir_create_per_adv_data(hdev, instance, pdu.data);
1347 pdu.cp.length = len;
1348 pdu.cp.handle = instance;
1349 pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
1351 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_DATA,
1352 sizeof(pdu.cp) + len, &pdu,
1356 static int hci_enable_per_advertising_sync(struct hci_dev *hdev, u8 instance)
1358 struct hci_cp_le_set_per_adv_enable cp;
1360 /* If periodic advertising already enabled there is nothing to do. */
1361 if (hci_dev_test_flag(hdev, HCI_LE_PER_ADV))
1364 memset(&cp, 0, sizeof(cp));
1367 cp.handle = instance;
1369 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE,
1370 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1373 /* Checks if periodic advertising data contains a Basic Announcement and if it
1374 * does generates a Broadcast ID and add Broadcast Announcement.
1376 static int hci_adv_bcast_annoucement(struct hci_dev *hdev, struct adv_info *adv)
1381 /* Skip if NULL adv as instance 0x00 is used for general purpose
1382 * advertising so it cannot used for the likes of Broadcast Announcement
1383 * as it can be overwritten at any point.
1388 /* Check if PA data doesn't contains a Basic Audio Announcement then
1389 * there is nothing to do.
1391 if (!eir_get_service_data(adv->per_adv_data, adv->per_adv_data_len,
1395 /* Check if advertising data already has a Broadcast Announcement since
1396 * the process may want to control the Broadcast ID directly and in that
1397 * case the kernel shall no interfere.
1399 if (eir_get_service_data(adv->adv_data, adv->adv_data_len, 0x1852,
1403 /* Generate Broadcast ID */
1404 get_random_bytes(bid, sizeof(bid));
1405 eir_append_service_data(ad, 0, 0x1852, bid, sizeof(bid));
1406 hci_set_adv_instance_data(hdev, adv->instance, sizeof(ad), ad, 0, NULL);
1408 return hci_update_adv_data_sync(hdev, adv->instance);
1411 int hci_start_per_adv_sync(struct hci_dev *hdev, u8 instance, u8 data_len,
1412 u8 *data, u32 flags, u16 min_interval,
1413 u16 max_interval, u16 sync_interval)
1415 struct adv_info *adv = NULL;
1419 hci_disable_per_advertising_sync(hdev, instance);
1422 adv = hci_find_adv_instance(hdev, instance);
1423 /* Create an instance if that could not be found */
1425 adv = hci_add_per_instance(hdev, instance, flags,
1430 return PTR_ERR(adv);
1435 /* Only start advertising if instance 0 or if a dedicated instance has
1438 if (!adv || added) {
1439 err = hci_start_ext_adv_sync(hdev, instance);
1443 err = hci_adv_bcast_annoucement(hdev, adv);
1448 err = hci_set_per_adv_params_sync(hdev, instance, min_interval,
1453 err = hci_set_per_adv_data_sync(hdev, instance);
1457 err = hci_enable_per_advertising_sync(hdev, instance);
1465 hci_remove_adv_instance(hdev, instance);
1470 static int hci_start_adv_sync(struct hci_dev *hdev, u8 instance)
1474 if (ext_adv_capable(hdev))
1475 return hci_start_ext_adv_sync(hdev, instance);
1477 err = hci_update_adv_data_sync(hdev, instance);
1481 err = hci_update_scan_rsp_data_sync(hdev, instance);
1485 return hci_enable_advertising_sync(hdev);
1488 int hci_enable_advertising_sync(struct hci_dev *hdev)
1490 struct adv_info *adv_instance;
1491 struct hci_cp_le_set_adv_param cp;
1492 u8 own_addr_type, enable = 0x01;
1494 u16 adv_min_interval, adv_max_interval;
1498 if (ext_adv_capable(hdev))
1499 return hci_enable_ext_advertising_sync(hdev,
1500 hdev->cur_adv_instance);
1502 flags = hci_adv_instance_flags(hdev, hdev->cur_adv_instance);
1503 adv_instance = hci_find_adv_instance(hdev, hdev->cur_adv_instance);
1505 /* If the "connectable" instance flag was not set, then choose between
1506 * ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
1508 connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
1509 mgmt_get_connectable(hdev);
1511 if (!is_advertising_allowed(hdev, connectable))
1514 status = hci_disable_advertising_sync(hdev);
1518 /* Clear the HCI_LE_ADV bit temporarily so that the
1519 * hci_update_random_address knows that it's safe to go ahead
1520 * and write a new random address. The flag will be set back on
1521 * as soon as the SET_ADV_ENABLE HCI command completes.
1523 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1525 /* Set require_privacy to true only when non-connectable
1526 * advertising is used. In that case it is fine to use a
1527 * non-resolvable private address.
1529 status = hci_update_random_address_sync(hdev, !connectable,
1530 adv_use_rpa(hdev, flags),
1535 memset(&cp, 0, sizeof(cp));
1538 adv_min_interval = adv_instance->min_interval;
1539 adv_max_interval = adv_instance->max_interval;
1541 adv_min_interval = hdev->le_adv_min_interval;
1542 adv_max_interval = hdev->le_adv_max_interval;
1546 cp.type = LE_ADV_IND;
1548 if (hci_adv_instance_is_scannable(hdev, hdev->cur_adv_instance))
1549 cp.type = LE_ADV_SCAN_IND;
1551 cp.type = LE_ADV_NONCONN_IND;
1553 if (!hci_dev_test_flag(hdev, HCI_DISCOVERABLE) ||
1554 hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) {
1555 adv_min_interval = DISCOV_LE_FAST_ADV_INT_MIN;
1556 adv_max_interval = DISCOV_LE_FAST_ADV_INT_MAX;
1560 cp.min_interval = cpu_to_le16(adv_min_interval);
1561 cp.max_interval = cpu_to_le16(adv_max_interval);
1562 cp.own_address_type = own_addr_type;
1563 cp.channel_map = hdev->le_adv_channel_map;
1565 status = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_PARAM,
1566 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1570 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
1571 sizeof(enable), &enable, HCI_CMD_TIMEOUT);
1574 static int enable_advertising_sync(struct hci_dev *hdev, void *data)
1576 return hci_enable_advertising_sync(hdev);
1579 int hci_enable_advertising(struct hci_dev *hdev)
1581 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
1582 list_empty(&hdev->adv_instances))
1585 return hci_cmd_sync_queue(hdev, enable_advertising_sync, NULL, NULL);
1588 int hci_remove_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance,
1593 if (!ext_adv_capable(hdev))
1596 err = hci_disable_ext_adv_instance_sync(hdev, instance);
1600 /* If request specifies an instance that doesn't exist, fail */
1601 if (instance > 0 && !hci_find_adv_instance(hdev, instance))
1604 return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_REMOVE_ADV_SET,
1605 sizeof(instance), &instance, 0,
1606 HCI_CMD_TIMEOUT, sk);
1609 static int remove_ext_adv_sync(struct hci_dev *hdev, void *data)
1611 struct adv_info *adv = data;
1615 instance = adv->instance;
1617 return hci_remove_ext_adv_instance_sync(hdev, instance, NULL);
1620 int hci_remove_ext_adv_instance(struct hci_dev *hdev, u8 instance)
1622 struct adv_info *adv = NULL;
1625 adv = hci_find_adv_instance(hdev, instance);
1630 return hci_cmd_sync_queue(hdev, remove_ext_adv_sync, adv, NULL);
1633 int hci_le_terminate_big_sync(struct hci_dev *hdev, u8 handle, u8 reason)
1635 struct hci_cp_le_term_big cp;
1637 memset(&cp, 0, sizeof(cp));
1641 return __hci_cmd_sync_status(hdev, HCI_OP_LE_TERM_BIG,
1642 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1645 static int hci_set_ext_adv_data_sync(struct hci_dev *hdev, u8 instance)
1648 struct hci_cp_le_set_ext_adv_data cp;
1649 u8 data[HCI_MAX_EXT_AD_LENGTH];
1652 struct adv_info *adv = NULL;
1655 memset(&pdu, 0, sizeof(pdu));
1658 adv = hci_find_adv_instance(hdev, instance);
1659 if (!adv || !adv->adv_data_changed)
1663 len = eir_create_adv_data(hdev, instance, pdu.data);
1665 pdu.cp.length = len;
1666 pdu.cp.handle = instance;
1667 pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
1668 pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
1670 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_DATA,
1671 sizeof(pdu.cp) + len, &pdu.cp,
1676 /* Update data if the command succeed */
1678 adv->adv_data_changed = false;
1680 memcpy(hdev->adv_data, pdu.data, len);
1681 hdev->adv_data_len = len;
1687 static int hci_set_adv_data_sync(struct hci_dev *hdev, u8 instance)
1689 struct hci_cp_le_set_adv_data cp;
1692 memset(&cp, 0, sizeof(cp));
1694 len = eir_create_adv_data(hdev, instance, cp.data);
1696 /* There's nothing to do if the data hasn't changed */
1697 if (hdev->adv_data_len == len &&
1698 memcmp(cp.data, hdev->adv_data, len) == 0)
1701 memcpy(hdev->adv_data, cp.data, sizeof(cp.data));
1702 hdev->adv_data_len = len;
1706 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_DATA,
1707 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1710 int hci_update_adv_data_sync(struct hci_dev *hdev, u8 instance)
1712 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
1715 if (ext_adv_capable(hdev))
1716 return hci_set_ext_adv_data_sync(hdev, instance);
1718 return hci_set_adv_data_sync(hdev, instance);
1721 int hci_schedule_adv_instance_sync(struct hci_dev *hdev, u8 instance,
1724 struct adv_info *adv = NULL;
1727 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) && !ext_adv_capable(hdev))
1730 if (hdev->adv_instance_timeout)
1733 adv = hci_find_adv_instance(hdev, instance);
1737 /* A zero timeout means unlimited advertising. As long as there is
1738 * only one instance, duration should be ignored. We still set a timeout
1739 * in case further instances are being added later on.
1741 * If the remaining lifetime of the instance is more than the duration
1742 * then the timeout corresponds to the duration, otherwise it will be
1743 * reduced to the remaining instance lifetime.
1745 if (adv->timeout == 0 || adv->duration <= adv->remaining_time)
1746 timeout = adv->duration;
1748 timeout = adv->remaining_time;
1750 /* The remaining time is being reduced unless the instance is being
1751 * advertised without time limit.
1754 adv->remaining_time = adv->remaining_time - timeout;
1756 /* Only use work for scheduling instances with legacy advertising */
1757 if (!ext_adv_capable(hdev)) {
1758 hdev->adv_instance_timeout = timeout;
1759 queue_delayed_work(hdev->req_workqueue,
1760 &hdev->adv_instance_expire,
1761 msecs_to_jiffies(timeout * 1000));
1764 /* If we're just re-scheduling the same instance again then do not
1765 * execute any HCI commands. This happens when a single instance is
1768 if (!force && hdev->cur_adv_instance == instance &&
1769 hci_dev_test_flag(hdev, HCI_LE_ADV))
1772 hdev->cur_adv_instance = instance;
1774 return hci_start_adv_sync(hdev, instance);
1777 static int hci_clear_adv_sets_sync(struct hci_dev *hdev, struct sock *sk)
1781 if (!ext_adv_capable(hdev))
1784 /* Disable instance 0x00 to disable all instances */
1785 err = hci_disable_ext_adv_instance_sync(hdev, 0x00);
1789 return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_CLEAR_ADV_SETS,
1790 0, NULL, 0, HCI_CMD_TIMEOUT, sk);
1793 static int hci_clear_adv_sync(struct hci_dev *hdev, struct sock *sk, bool force)
1795 struct adv_info *adv, *n;
1798 if (ext_adv_capable(hdev))
1799 /* Remove all existing sets */
1800 err = hci_clear_adv_sets_sync(hdev, sk);
1801 if (ext_adv_capable(hdev))
1804 /* This is safe as long as there is no command send while the lock is
1809 /* Cleanup non-ext instances */
1810 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1811 u8 instance = adv->instance;
1814 if (!(force || adv->timeout))
1817 err = hci_remove_adv_instance(hdev, instance);
1819 mgmt_advertising_removed(sk, hdev, instance);
1822 hci_dev_unlock(hdev);
1827 static int hci_remove_adv_sync(struct hci_dev *hdev, u8 instance,
1832 /* If we use extended advertising, instance has to be removed first. */
1833 if (ext_adv_capable(hdev))
1834 err = hci_remove_ext_adv_instance_sync(hdev, instance, sk);
1835 if (ext_adv_capable(hdev))
1838 /* This is safe as long as there is no command send while the lock is
1843 err = hci_remove_adv_instance(hdev, instance);
1845 mgmt_advertising_removed(sk, hdev, instance);
1847 hci_dev_unlock(hdev);
1852 /* For a single instance:
1853 * - force == true: The instance will be removed even when its remaining
1854 * lifetime is not zero.
1855 * - force == false: the instance will be deactivated but kept stored unless
1856 * the remaining lifetime is zero.
1858 * For instance == 0x00:
1859 * - force == true: All instances will be removed regardless of their timeout
1861 * - force == false: Only instances that have a timeout will be removed.
1863 int hci_remove_advertising_sync(struct hci_dev *hdev, struct sock *sk,
1864 u8 instance, bool force)
1866 struct adv_info *next = NULL;
1869 /* Cancel any timeout concerning the removed instance(s). */
1870 if (!instance || hdev->cur_adv_instance == instance)
1871 cancel_adv_timeout(hdev);
1873 /* Get the next instance to advertise BEFORE we remove
1874 * the current one. This can be the same instance again
1875 * if there is only one instance.
1877 if (hdev->cur_adv_instance == instance)
1878 next = hci_get_next_instance(hdev, instance);
1881 err = hci_clear_adv_sync(hdev, sk, force);
1885 struct adv_info *adv = hci_find_adv_instance(hdev, instance);
1887 if (force || (adv && adv->timeout && !adv->remaining_time)) {
1888 /* Don't advertise a removed instance. */
1889 if (next && next->instance == instance)
1892 err = hci_remove_adv_sync(hdev, instance, sk);
1898 if (!hdev_is_powered(hdev) || hci_dev_test_flag(hdev, HCI_ADVERTISING))
1901 if (next && !ext_adv_capable(hdev))
1902 hci_schedule_adv_instance_sync(hdev, next->instance, false);
1907 int hci_read_rssi_sync(struct hci_dev *hdev, __le16 handle)
1909 struct hci_cp_read_rssi cp;
1912 return __hci_cmd_sync_status(hdev, HCI_OP_READ_RSSI,
1913 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1916 int hci_read_clock_sync(struct hci_dev *hdev, struct hci_cp_read_clock *cp)
1918 return __hci_cmd_sync_status(hdev, HCI_OP_READ_CLOCK,
1919 sizeof(*cp), cp, HCI_CMD_TIMEOUT);
1922 int hci_read_tx_power_sync(struct hci_dev *hdev, __le16 handle, u8 type)
1924 struct hci_cp_read_tx_power cp;
1928 return __hci_cmd_sync_status(hdev, HCI_OP_READ_TX_POWER,
1929 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1932 int hci_disable_advertising_sync(struct hci_dev *hdev)
1937 /* If controller is not advertising we are done. */
1938 if (!hci_dev_test_flag(hdev, HCI_LE_ADV))
1941 if (ext_adv_capable(hdev))
1942 err = hci_disable_ext_adv_instance_sync(hdev, 0x00);
1943 if (ext_adv_capable(hdev))
1946 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
1947 sizeof(enable), &enable, HCI_CMD_TIMEOUT);
1950 static int hci_le_set_ext_scan_enable_sync(struct hci_dev *hdev, u8 val,
1953 struct hci_cp_le_set_ext_scan_enable cp;
1955 memset(&cp, 0, sizeof(cp));
1958 if (hci_dev_test_flag(hdev, HCI_MESH))
1959 cp.filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
1961 cp.filter_dup = filter_dup;
1963 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE,
1964 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1967 static int hci_le_set_scan_enable_sync(struct hci_dev *hdev, u8 val,
1970 struct hci_cp_le_set_scan_enable cp;
1972 if (use_ext_scan(hdev))
1973 return hci_le_set_ext_scan_enable_sync(hdev, val, filter_dup);
1975 memset(&cp, 0, sizeof(cp));
1978 if (val && hci_dev_test_flag(hdev, HCI_MESH))
1979 cp.filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
1981 cp.filter_dup = filter_dup;
1983 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_ENABLE,
1984 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1987 static int hci_le_set_addr_resolution_enable_sync(struct hci_dev *hdev, u8 val)
1989 if (!use_ll_privacy(hdev))
1992 /* If controller is not/already resolving we are done. */
1993 if (val == hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION))
1996 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
1997 sizeof(val), &val, HCI_CMD_TIMEOUT);
2000 static int hci_scan_disable_sync(struct hci_dev *hdev)
2004 /* If controller is not scanning we are done. */
2005 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
2008 if (hdev->scanning_paused) {
2009 bt_dev_dbg(hdev, "Scanning is paused for suspend");
2013 err = hci_le_set_scan_enable_sync(hdev, LE_SCAN_DISABLE, 0x00);
2015 bt_dev_err(hdev, "Unable to disable scanning: %d", err);
2022 static bool scan_use_rpa(struct hci_dev *hdev)
2024 return hci_dev_test_flag(hdev, HCI_PRIVACY);
2027 static void hci_start_interleave_scan(struct hci_dev *hdev)
2029 hdev->interleave_scan_state = INTERLEAVE_SCAN_NO_FILTER;
2030 queue_delayed_work(hdev->req_workqueue,
2031 &hdev->interleave_scan, 0);
2034 static bool is_interleave_scanning(struct hci_dev *hdev)
2036 return hdev->interleave_scan_state != INTERLEAVE_SCAN_NONE;
2039 static void cancel_interleave_scan(struct hci_dev *hdev)
2041 bt_dev_dbg(hdev, "cancelling interleave scan");
2043 cancel_delayed_work_sync(&hdev->interleave_scan);
2045 hdev->interleave_scan_state = INTERLEAVE_SCAN_NONE;
2048 /* Return true if interleave_scan wasn't started until exiting this function,
2049 * otherwise, return false
2051 static bool hci_update_interleaved_scan_sync(struct hci_dev *hdev)
2053 /* Do interleaved scan only if all of the following are true:
2054 * - There is at least one ADV monitor
2055 * - At least one pending LE connection or one device to be scanned for
2056 * - Monitor offloading is not supported
2057 * If so, we should alternate between allowlist scan and one without
2058 * any filters to save power.
2060 bool use_interleaving = hci_is_adv_monitoring(hdev) &&
2061 !(list_empty(&hdev->pend_le_conns) &&
2062 list_empty(&hdev->pend_le_reports)) &&
2063 hci_get_adv_monitor_offload_ext(hdev) ==
2064 HCI_ADV_MONITOR_EXT_NONE;
2065 bool is_interleaving = is_interleave_scanning(hdev);
2067 if (use_interleaving && !is_interleaving) {
2068 hci_start_interleave_scan(hdev);
2069 bt_dev_dbg(hdev, "starting interleave scan");
2073 if (!use_interleaving && is_interleaving)
2074 cancel_interleave_scan(hdev);
2079 /* Removes connection to resolve list if needed.*/
2080 static int hci_le_del_resolve_list_sync(struct hci_dev *hdev,
2081 bdaddr_t *bdaddr, u8 bdaddr_type)
2083 struct hci_cp_le_del_from_resolv_list cp;
2084 struct bdaddr_list_with_irk *entry;
2086 if (!use_ll_privacy(hdev))
2089 /* Check if the IRK has been programmed */
2090 entry = hci_bdaddr_list_lookup_with_irk(&hdev->le_resolv_list, bdaddr,
2095 cp.bdaddr_type = bdaddr_type;
2096 bacpy(&cp.bdaddr, bdaddr);
2098 return __hci_cmd_sync_status(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST,
2099 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2102 static int hci_le_del_accept_list_sync(struct hci_dev *hdev,
2103 bdaddr_t *bdaddr, u8 bdaddr_type)
2105 struct hci_cp_le_del_from_accept_list cp;
2108 /* Check if device is on accept list before removing it */
2109 if (!hci_bdaddr_list_lookup(&hdev->le_accept_list, bdaddr, bdaddr_type))
2112 cp.bdaddr_type = bdaddr_type;
2113 bacpy(&cp.bdaddr, bdaddr);
2115 /* Ignore errors when removing from resolving list as that is likely
2116 * that the device was never added.
2118 hci_le_del_resolve_list_sync(hdev, &cp.bdaddr, cp.bdaddr_type);
2120 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
2121 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2123 bt_dev_err(hdev, "Unable to remove from allow list: %d", err);
2127 bt_dev_dbg(hdev, "Remove %pMR (0x%x) from allow list", &cp.bdaddr,
2133 /* Adds connection to resolve list if needed.
2134 * Setting params to NULL programs local hdev->irk
2136 static int hci_le_add_resolve_list_sync(struct hci_dev *hdev,
2137 struct hci_conn_params *params)
2139 struct hci_cp_le_add_to_resolv_list cp;
2140 struct smp_irk *irk;
2141 struct bdaddr_list_with_irk *entry;
2143 if (!use_ll_privacy(hdev))
2146 /* Attempt to program local identity address, type and irk if params is
2150 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
2153 hci_copy_identity_address(hdev, &cp.bdaddr, &cp.bdaddr_type);
2154 memcpy(cp.peer_irk, hdev->irk, 16);
2158 irk = hci_find_irk_by_addr(hdev, ¶ms->addr, params->addr_type);
2162 /* Check if the IK has _not_ been programmed yet. */
2163 entry = hci_bdaddr_list_lookup_with_irk(&hdev->le_resolv_list,
2169 cp.bdaddr_type = params->addr_type;
2170 bacpy(&cp.bdaddr, ¶ms->addr);
2171 memcpy(cp.peer_irk, irk->val, 16);
2173 /* Default privacy mode is always Network */
2174 params->privacy_mode = HCI_NETWORK_PRIVACY;
2177 if (hci_dev_test_flag(hdev, HCI_PRIVACY))
2178 memcpy(cp.local_irk, hdev->irk, 16);
2180 memset(cp.local_irk, 0, 16);
2182 return __hci_cmd_sync_status(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST,
2183 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2186 /* Set Device Privacy Mode. */
2187 static int hci_le_set_privacy_mode_sync(struct hci_dev *hdev,
2188 struct hci_conn_params *params)
2190 struct hci_cp_le_set_privacy_mode cp;
2191 struct smp_irk *irk;
2193 /* If device privacy mode has already been set there is nothing to do */
2194 if (params->privacy_mode == HCI_DEVICE_PRIVACY)
2197 /* Check if HCI_CONN_FLAG_DEVICE_PRIVACY has been set as it also
2198 * indicates that LL Privacy has been enabled and
2199 * HCI_OP_LE_SET_PRIVACY_MODE is supported.
2201 if (!(params->flags & HCI_CONN_FLAG_DEVICE_PRIVACY))
2204 irk = hci_find_irk_by_addr(hdev, ¶ms->addr, params->addr_type);
2208 memset(&cp, 0, sizeof(cp));
2209 cp.bdaddr_type = irk->addr_type;
2210 bacpy(&cp.bdaddr, &irk->bdaddr);
2211 cp.mode = HCI_DEVICE_PRIVACY;
2213 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PRIVACY_MODE,
2214 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2217 /* Adds connection to allow list if needed, if the device uses RPA (has IRK)
2218 * this attempts to program the device in the resolving list as well and
2219 * properly set the privacy mode.
2221 static int hci_le_add_accept_list_sync(struct hci_dev *hdev,
2222 struct hci_conn_params *params,
2225 struct hci_cp_le_add_to_accept_list cp;
2228 /* During suspend, only wakeable devices can be in acceptlist */
2229 if (hdev->suspended &&
2230 !(params->flags & HCI_CONN_FLAG_REMOTE_WAKEUP))
2233 /* Select filter policy to accept all advertising */
2234 if (*num_entries >= hdev->le_accept_list_size)
2237 /* Accept list can not be used with RPAs */
2238 if (!use_ll_privacy(hdev) &&
2239 hci_find_irk_by_addr(hdev, ¶ms->addr, params->addr_type))
2242 /* Attempt to program the device in the resolving list first to avoid
2243 * having to rollback in case it fails since the resolving list is
2244 * dynamic it can probably be smaller than the accept list.
2246 err = hci_le_add_resolve_list_sync(hdev, params);
2248 bt_dev_err(hdev, "Unable to add to resolve list: %d", err);
2252 /* Set Privacy Mode */
2253 err = hci_le_set_privacy_mode_sync(hdev, params);
2255 bt_dev_err(hdev, "Unable to set privacy mode: %d", err);
2259 /* Check if already in accept list */
2260 if (hci_bdaddr_list_lookup(&hdev->le_accept_list, ¶ms->addr,
2265 cp.bdaddr_type = params->addr_type;
2266 bacpy(&cp.bdaddr, ¶ms->addr);
2268 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST,
2269 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2271 bt_dev_err(hdev, "Unable to add to allow list: %d", err);
2272 /* Rollback the device from the resolving list */
2273 hci_le_del_resolve_list_sync(hdev, &cp.bdaddr, cp.bdaddr_type);
2277 bt_dev_dbg(hdev, "Add %pMR (0x%x) to allow list", &cp.bdaddr,
2283 /* This function disables/pause all advertising instances */
2284 static int hci_pause_advertising_sync(struct hci_dev *hdev)
2289 /* If already been paused there is nothing to do. */
2290 if (hdev->advertising_paused)
2293 bt_dev_dbg(hdev, "Pausing directed advertising");
2295 /* Stop directed advertising */
2296 old_state = hci_dev_test_flag(hdev, HCI_ADVERTISING);
2298 /* When discoverable timeout triggers, then just make sure
2299 * the limited discoverable flag is cleared. Even in the case
2300 * of a timeout triggered from general discoverable, it is
2301 * safe to unconditionally clear the flag.
2303 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
2304 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
2305 hdev->discov_timeout = 0;
2308 bt_dev_dbg(hdev, "Pausing advertising instances");
2310 /* Call to disable any advertisements active on the controller.
2311 * This will succeed even if no advertisements are configured.
2313 err = hci_disable_advertising_sync(hdev);
2317 /* If we are using software rotation, pause the loop */
2318 if (!ext_adv_capable(hdev))
2319 cancel_adv_timeout(hdev);
2321 hdev->advertising_paused = true;
2322 hdev->advertising_old_state = old_state;
2327 /* This function enables all user advertising instances */
2328 static int hci_resume_advertising_sync(struct hci_dev *hdev)
2330 struct adv_info *adv, *tmp;
2333 /* If advertising has not been paused there is nothing to do. */
2334 if (!hdev->advertising_paused)
2337 /* Resume directed advertising */
2338 hdev->advertising_paused = false;
2339 if (hdev->advertising_old_state) {
2340 hci_dev_set_flag(hdev, HCI_ADVERTISING);
2341 hdev->advertising_old_state = 0;
2344 bt_dev_dbg(hdev, "Resuming advertising instances");
2346 if (ext_adv_capable(hdev)) {
2347 /* Call for each tracked instance to be re-enabled */
2348 list_for_each_entry_safe(adv, tmp, &hdev->adv_instances, list) {
2349 err = hci_enable_ext_advertising_sync(hdev,
2354 /* If the instance cannot be resumed remove it */
2355 hci_remove_ext_adv_instance_sync(hdev, adv->instance,
2359 /* Schedule for most recent instance to be restarted and begin
2360 * the software rotation loop
2362 err = hci_schedule_adv_instance_sync(hdev,
2363 hdev->cur_adv_instance,
2367 hdev->advertising_paused = false;
2372 static int hci_pause_addr_resolution(struct hci_dev *hdev)
2376 if (!use_ll_privacy(hdev))
2379 if (!hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION))
2382 /* Cannot disable addr resolution if scanning is enabled or
2383 * when initiating an LE connection.
2385 if (hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2386 hci_lookup_le_connect(hdev)) {
2387 bt_dev_err(hdev, "Command not allowed when scan/LE connect");
2391 /* Cannot disable addr resolution if advertising is enabled. */
2392 err = hci_pause_advertising_sync(hdev);
2394 bt_dev_err(hdev, "Pause advertising failed: %d", err);
2398 err = hci_le_set_addr_resolution_enable_sync(hdev, 0x00);
2400 bt_dev_err(hdev, "Unable to disable Address Resolution: %d",
2403 /* Return if address resolution is disabled and RPA is not used. */
2404 if (!err && scan_use_rpa(hdev))
2407 hci_resume_advertising_sync(hdev);
2411 struct sk_buff *hci_read_local_oob_data_sync(struct hci_dev *hdev,
2412 bool extended, struct sock *sk)
2414 u16 opcode = extended ? HCI_OP_READ_LOCAL_OOB_EXT_DATA :
2415 HCI_OP_READ_LOCAL_OOB_DATA;
2417 return __hci_cmd_sync_sk(hdev, opcode, 0, NULL, 0, HCI_CMD_TIMEOUT, sk);
2420 /* Device must not be scanning when updating the accept list.
2422 * Update is done using the following sequence:
2424 * use_ll_privacy((Disable Advertising) -> Disable Resolving List) ->
2425 * Remove Devices From Accept List ->
2426 * (has IRK && use_ll_privacy(Remove Devices From Resolving List))->
2427 * Add Devices to Accept List ->
2428 * (has IRK && use_ll_privacy(Remove Devices From Resolving List)) ->
2429 * use_ll_privacy(Enable Resolving List -> (Enable Advertising)) ->
2432 * In case of failure advertising shall be restored to its original state and
2433 * return would disable accept list since either accept or resolving list could
2434 * not be programmed.
2437 static u8 hci_update_accept_list_sync(struct hci_dev *hdev)
2439 struct hci_conn_params *params;
2440 struct bdaddr_list *b, *t;
2442 bool pend_conn, pend_report;
2446 /* Pause advertising if resolving list can be used as controllers
2447 * cannot accept resolving list modifications while advertising.
2449 if (use_ll_privacy(hdev)) {
2450 err = hci_pause_advertising_sync(hdev);
2452 bt_dev_err(hdev, "pause advertising failed: %d", err);
2457 /* Disable address resolution while reprogramming accept list since
2458 * devices that do have an IRK will be programmed in the resolving list
2459 * when LL Privacy is enabled.
2461 err = hci_le_set_addr_resolution_enable_sync(hdev, 0x00);
2463 bt_dev_err(hdev, "Unable to disable LL privacy: %d", err);
2467 /* Go through the current accept list programmed into the
2468 * controller one by one and check if that address is connected or is
2469 * still in the list of pending connections or list of devices to
2470 * report. If not present in either list, then remove it from
2473 list_for_each_entry_safe(b, t, &hdev->le_accept_list, list) {
2474 if (hci_conn_hash_lookup_le(hdev, &b->bdaddr, b->bdaddr_type))
2477 pend_conn = hci_pend_le_action_lookup(&hdev->pend_le_conns,
2480 pend_report = hci_pend_le_action_lookup(&hdev->pend_le_reports,
2484 /* If the device is not likely to connect or report,
2485 * remove it from the acceptlist.
2487 if (!pend_conn && !pend_report) {
2488 hci_le_del_accept_list_sync(hdev, &b->bdaddr,
2496 /* Since all no longer valid accept list entries have been
2497 * removed, walk through the list of pending connections
2498 * and ensure that any new device gets programmed into
2501 * If the list of the devices is larger than the list of
2502 * available accept list entries in the controller, then
2503 * just abort and return filer policy value to not use the
2506 list_for_each_entry(params, &hdev->pend_le_conns, action) {
2507 err = hci_le_add_accept_list_sync(hdev, params, &num_entries);
2512 /* After adding all new pending connections, walk through
2513 * the list of pending reports and also add these to the
2514 * accept list if there is still space. Abort if space runs out.
2516 list_for_each_entry(params, &hdev->pend_le_reports, action) {
2517 err = hci_le_add_accept_list_sync(hdev, params, &num_entries);
2522 /* Use the allowlist unless the following conditions are all true:
2523 * - We are not currently suspending
2524 * - There are 1 or more ADV monitors registered and it's not offloaded
2525 * - Interleaved scanning is not currently using the allowlist
2527 if (!idr_is_empty(&hdev->adv_monitors_idr) && !hdev->suspended &&
2528 hci_get_adv_monitor_offload_ext(hdev) == HCI_ADV_MONITOR_EXT_NONE &&
2529 hdev->interleave_scan_state != INTERLEAVE_SCAN_ALLOWLIST)
2533 filter_policy = err ? 0x00 : 0x01;
2535 /* Enable address resolution when LL Privacy is enabled. */
2536 err = hci_le_set_addr_resolution_enable_sync(hdev, 0x01);
2538 bt_dev_err(hdev, "Unable to enable LL privacy: %d", err);
2540 /* Resume advertising if it was paused */
2541 if (use_ll_privacy(hdev))
2542 hci_resume_advertising_sync(hdev);
2544 /* Select filter policy to use accept list */
2545 return filter_policy;
2548 /* Returns true if an le connection is in the scanning state */
2549 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
2551 struct hci_conn_hash *h = &hdev->conn_hash;
2556 list_for_each_entry_rcu(c, &h->list, list) {
2557 if (c->type == LE_LINK && c->state == BT_CONNECT &&
2558 test_bit(HCI_CONN_SCANNING, &c->flags)) {
2569 static int hci_le_set_ext_scan_param_sync(struct hci_dev *hdev, u8 type,
2570 u16 interval, u16 window,
2571 u8 own_addr_type, u8 filter_policy)
2573 struct hci_cp_le_set_ext_scan_params *cp;
2574 struct hci_cp_le_scan_phy_params *phy;
2575 u8 data[sizeof(*cp) + sizeof(*phy) * 2];
2579 phy = (void *)cp->data;
2581 memset(data, 0, sizeof(data));
2583 cp->own_addr_type = own_addr_type;
2584 cp->filter_policy = filter_policy;
2586 if (scan_1m(hdev) || scan_2m(hdev)) {
2587 cp->scanning_phys |= LE_SCAN_PHY_1M;
2590 phy->interval = cpu_to_le16(interval);
2591 phy->window = cpu_to_le16(window);
2597 if (scan_coded(hdev)) {
2598 cp->scanning_phys |= LE_SCAN_PHY_CODED;
2601 phy->interval = cpu_to_le16(interval);
2602 phy->window = cpu_to_le16(window);
2608 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS,
2609 sizeof(*cp) + sizeof(*phy) * num_phy,
2610 data, HCI_CMD_TIMEOUT);
2613 static int hci_le_set_scan_param_sync(struct hci_dev *hdev, u8 type,
2614 u16 interval, u16 window,
2615 u8 own_addr_type, u8 filter_policy)
2617 struct hci_cp_le_set_scan_param cp;
2619 if (use_ext_scan(hdev))
2620 return hci_le_set_ext_scan_param_sync(hdev, type, interval,
2621 window, own_addr_type,
2624 memset(&cp, 0, sizeof(cp));
2626 cp.interval = cpu_to_le16(interval);
2627 cp.window = cpu_to_le16(window);
2628 cp.own_address_type = own_addr_type;
2629 cp.filter_policy = filter_policy;
2631 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_PARAM,
2632 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2635 static int hci_start_scan_sync(struct hci_dev *hdev, u8 type, u16 interval,
2636 u16 window, u8 own_addr_type, u8 filter_policy,
2641 if (hdev->scanning_paused) {
2642 bt_dev_dbg(hdev, "Scanning is paused for suspend");
2646 err = hci_le_set_scan_param_sync(hdev, type, interval, window,
2647 own_addr_type, filter_policy);
2651 return hci_le_set_scan_enable_sync(hdev, LE_SCAN_ENABLE, filter_dup);
2654 static int hci_passive_scan_sync(struct hci_dev *hdev)
2658 u16 window, interval;
2659 u8 filter_dups = LE_SCAN_FILTER_DUP_ENABLE;
2662 if (hdev->scanning_paused) {
2663 bt_dev_dbg(hdev, "Scanning is paused for suspend");
2667 err = hci_scan_disable_sync(hdev);
2669 bt_dev_err(hdev, "disable scanning failed: %d", err);
2673 /* Set require_privacy to false since no SCAN_REQ are send
2674 * during passive scanning. Not using an non-resolvable address
2675 * here is important so that peer devices using direct
2676 * advertising with our address will be correctly reported
2677 * by the controller.
2679 if (hci_update_random_address_sync(hdev, false, scan_use_rpa(hdev),
2683 if (hdev->enable_advmon_interleave_scan &&
2684 hci_update_interleaved_scan_sync(hdev))
2687 bt_dev_dbg(hdev, "interleave state %d", hdev->interleave_scan_state);
2689 /* Adding or removing entries from the accept list must
2690 * happen before enabling scanning. The controller does
2691 * not allow accept list modification while scanning.
2693 filter_policy = hci_update_accept_list_sync(hdev);
2695 /* When the controller is using random resolvable addresses and
2696 * with that having LE privacy enabled, then controllers with
2697 * Extended Scanner Filter Policies support can now enable support
2698 * for handling directed advertising.
2700 * So instead of using filter polices 0x00 (no acceptlist)
2701 * and 0x01 (acceptlist enabled) use the new filter policies
2702 * 0x02 (no acceptlist) and 0x03 (acceptlist enabled).
2704 if (hci_dev_test_flag(hdev, HCI_PRIVACY) &&
2705 (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY))
2706 filter_policy |= 0x02;
2708 if (hdev->suspended) {
2709 window = hdev->le_scan_window_suspend;
2710 interval = hdev->le_scan_int_suspend;
2711 } else if (hci_is_le_conn_scanning(hdev)) {
2712 window = hdev->le_scan_window_connect;
2713 interval = hdev->le_scan_int_connect;
2714 } else if (hci_is_adv_monitoring(hdev)) {
2715 window = hdev->le_scan_window_adv_monitor;
2716 interval = hdev->le_scan_int_adv_monitor;
2718 window = hdev->le_scan_window;
2719 interval = hdev->le_scan_interval;
2722 /* Disable all filtering for Mesh */
2723 if (hci_dev_test_flag(hdev, HCI_MESH)) {
2725 filter_dups = LE_SCAN_FILTER_DUP_DISABLE;
2728 bt_dev_dbg(hdev, "LE passive scan with acceptlist = %d", filter_policy);
2730 return hci_start_scan_sync(hdev, LE_SCAN_PASSIVE, interval, window,
2731 own_addr_type, filter_policy, filter_dups);
2734 /* This function controls the passive scanning based on hdev->pend_le_conns
2735 * list. If there are pending LE connection we start the background scanning,
2736 * otherwise we stop it in the following sequence:
2738 * If there are devices to scan:
2740 * Disable Scanning -> Update Accept List ->
2741 * use_ll_privacy((Disable Advertising) -> Disable Resolving List ->
2742 * Update Resolving List -> Enable Resolving List -> (Enable Advertising)) ->
2749 int hci_update_passive_scan_sync(struct hci_dev *hdev)
2753 if (!test_bit(HCI_UP, &hdev->flags) ||
2754 test_bit(HCI_INIT, &hdev->flags) ||
2755 hci_dev_test_flag(hdev, HCI_SETUP) ||
2756 hci_dev_test_flag(hdev, HCI_CONFIG) ||
2757 hci_dev_test_flag(hdev, HCI_AUTO_OFF) ||
2758 hci_dev_test_flag(hdev, HCI_UNREGISTER))
2761 /* No point in doing scanning if LE support hasn't been enabled */
2762 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
2765 /* If discovery is active don't interfere with it */
2766 if (hdev->discovery.state != DISCOVERY_STOPPED)
2769 /* Reset RSSI and UUID filters when starting background scanning
2770 * since these filters are meant for service discovery only.
2772 * The Start Discovery and Start Service Discovery operations
2773 * ensure to set proper values for RSSI threshold and UUID
2774 * filter list. So it is safe to just reset them here.
2776 hci_discovery_filter_clear(hdev);
2778 bt_dev_dbg(hdev, "ADV monitoring is %s",
2779 hci_is_adv_monitoring(hdev) ? "on" : "off");
2781 if (!hci_dev_test_flag(hdev, HCI_MESH) &&
2782 list_empty(&hdev->pend_le_conns) &&
2783 list_empty(&hdev->pend_le_reports) &&
2784 !hci_is_adv_monitoring(hdev) &&
2785 !hci_dev_test_flag(hdev, HCI_PA_SYNC)) {
2786 /* If there is no pending LE connections or devices
2787 * to be scanned for or no ADV monitors, we should stop the
2788 * background scanning.
2791 bt_dev_dbg(hdev, "stopping background scanning");
2793 err = hci_scan_disable_sync(hdev);
2795 bt_dev_err(hdev, "stop background scanning failed: %d",
2798 /* If there is at least one pending LE connection, we should
2799 * keep the background scan running.
2802 /* If controller is connecting, we should not start scanning
2803 * since some controllers are not able to scan and connect at
2806 if (hci_lookup_le_connect(hdev))
2809 bt_dev_dbg(hdev, "start background scanning");
2811 err = hci_passive_scan_sync(hdev);
2813 bt_dev_err(hdev, "start background scanning failed: %d",
2820 static int update_scan_sync(struct hci_dev *hdev, void *data)
2822 return hci_update_scan_sync(hdev);
2825 int hci_update_scan(struct hci_dev *hdev)
2827 return hci_cmd_sync_queue(hdev, update_scan_sync, NULL, NULL);
2830 static int update_passive_scan_sync(struct hci_dev *hdev, void *data)
2832 return hci_update_passive_scan_sync(hdev);
2835 int hci_update_passive_scan(struct hci_dev *hdev)
2837 /* Only queue if it would have any effect */
2838 if (!test_bit(HCI_UP, &hdev->flags) ||
2839 test_bit(HCI_INIT, &hdev->flags) ||
2840 hci_dev_test_flag(hdev, HCI_SETUP) ||
2841 hci_dev_test_flag(hdev, HCI_CONFIG) ||
2842 hci_dev_test_flag(hdev, HCI_AUTO_OFF) ||
2843 hci_dev_test_flag(hdev, HCI_UNREGISTER))
2846 return hci_cmd_sync_queue(hdev, update_passive_scan_sync, NULL, NULL);
2849 int hci_write_sc_support_sync(struct hci_dev *hdev, u8 val)
2853 if (!bredr_sc_enabled(hdev) || lmp_host_sc_capable(hdev))
2856 err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SC_SUPPORT,
2857 sizeof(val), &val, HCI_CMD_TIMEOUT);
2861 hdev->features[1][0] |= LMP_HOST_SC;
2862 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
2864 hdev->features[1][0] &= ~LMP_HOST_SC;
2865 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
2872 int hci_write_ssp_mode_sync(struct hci_dev *hdev, u8 mode)
2876 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED) ||
2877 lmp_host_ssp_capable(hdev))
2880 if (!mode && hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS)) {
2881 __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE,
2882 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
2885 err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_MODE,
2886 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
2890 return hci_write_sc_support_sync(hdev, 0x01);
2893 int hci_write_le_host_supported_sync(struct hci_dev *hdev, u8 le, u8 simul)
2895 struct hci_cp_write_le_host_supported cp;
2897 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) ||
2898 !lmp_bredr_capable(hdev))
2901 /* Check first if we already have the right host state
2902 * (host features set)
2904 if (le == lmp_host_le_capable(hdev) &&
2905 simul == lmp_host_le_br_capable(hdev))
2908 memset(&cp, 0, sizeof(cp));
2913 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED,
2914 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2917 static int hci_powered_update_adv_sync(struct hci_dev *hdev)
2919 struct adv_info *adv, *tmp;
2922 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
2925 /* If RPA Resolution has not been enable yet it means the
2926 * resolving list is empty and we should attempt to program the
2927 * local IRK in order to support using own_addr_type
2928 * ADDR_LE_DEV_RANDOM_RESOLVED (0x03).
2930 if (!hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION)) {
2931 hci_le_add_resolve_list_sync(hdev, NULL);
2932 hci_le_set_addr_resolution_enable_sync(hdev, 0x01);
2935 /* Make sure the controller has a good default for
2936 * advertising data. This also applies to the case
2937 * where BR/EDR was toggled during the AUTO_OFF phase.
2939 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
2940 list_empty(&hdev->adv_instances)) {
2941 if (ext_adv_capable(hdev)) {
2942 err = hci_setup_ext_adv_instance_sync(hdev, 0x00);
2944 hci_update_scan_rsp_data_sync(hdev, 0x00);
2946 err = hci_update_adv_data_sync(hdev, 0x00);
2948 hci_update_scan_rsp_data_sync(hdev, 0x00);
2951 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
2952 hci_enable_advertising_sync(hdev);
2955 /* Call for each tracked instance to be scheduled */
2956 list_for_each_entry_safe(adv, tmp, &hdev->adv_instances, list)
2957 hci_schedule_adv_instance_sync(hdev, adv->instance, true);
2962 static int hci_write_auth_enable_sync(struct hci_dev *hdev)
2966 link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY);
2967 if (link_sec == test_bit(HCI_AUTH, &hdev->flags))
2970 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_AUTH_ENABLE,
2971 sizeof(link_sec), &link_sec,
2975 int hci_write_fast_connectable_sync(struct hci_dev *hdev, bool enable)
2977 struct hci_cp_write_page_scan_activity cp;
2981 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
2984 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
2987 memset(&cp, 0, sizeof(cp));
2990 type = PAGE_SCAN_TYPE_INTERLACED;
2992 /* 160 msec page scan interval */
2993 cp.interval = cpu_to_le16(0x0100);
2995 type = hdev->def_page_scan_type;
2996 cp.interval = cpu_to_le16(hdev->def_page_scan_int);
2999 cp.window = cpu_to_le16(hdev->def_page_scan_window);
3001 if (__cpu_to_le16(hdev->page_scan_interval) != cp.interval ||
3002 __cpu_to_le16(hdev->page_scan_window) != cp.window) {
3003 err = __hci_cmd_sync_status(hdev,
3004 HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
3005 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3010 if (hdev->page_scan_type != type)
3011 err = __hci_cmd_sync_status(hdev,
3012 HCI_OP_WRITE_PAGE_SCAN_TYPE,
3013 sizeof(type), &type,
3019 static bool disconnected_accept_list_entries(struct hci_dev *hdev)
3021 struct bdaddr_list *b;
3023 list_for_each_entry(b, &hdev->accept_list, list) {
3024 struct hci_conn *conn;
3026 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &b->bdaddr);
3030 if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG)
3037 static int hci_write_scan_enable_sync(struct hci_dev *hdev, u8 val)
3039 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SCAN_ENABLE,
3044 int hci_update_scan_sync(struct hci_dev *hdev)
3048 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
3051 if (!hdev_is_powered(hdev))
3054 if (mgmt_powering_down(hdev))
3057 if (hdev->scanning_paused)
3060 if (hci_dev_test_flag(hdev, HCI_CONNECTABLE) ||
3061 disconnected_accept_list_entries(hdev))
3064 scan = SCAN_DISABLED;
3066 if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
3067 scan |= SCAN_INQUIRY;
3069 if (test_bit(HCI_PSCAN, &hdev->flags) == !!(scan & SCAN_PAGE) &&
3070 test_bit(HCI_ISCAN, &hdev->flags) == !!(scan & SCAN_INQUIRY))
3073 return hci_write_scan_enable_sync(hdev, scan);
3076 int hci_update_name_sync(struct hci_dev *hdev)
3078 struct hci_cp_write_local_name cp;
3080 memset(&cp, 0, sizeof(cp));
3082 memcpy(cp.name, hdev->dev_name, sizeof(cp.name));
3084 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LOCAL_NAME,
3089 /* This function perform powered update HCI command sequence after the HCI init
3090 * sequence which end up resetting all states, the sequence is as follows:
3092 * HCI_SSP_ENABLED(Enable SSP)
3093 * HCI_LE_ENABLED(Enable LE)
3094 * HCI_LE_ENABLED(use_ll_privacy(Add local IRK to Resolving List) ->
3096 * Enable Authentication
3097 * lmp_bredr_capable(Set Fast Connectable -> Set Scan Type -> Set Class ->
3098 * Set Name -> Set EIR)
3100 int hci_powered_update_sync(struct hci_dev *hdev)
3104 /* Register the available SMP channels (BR/EDR and LE) only when
3105 * successfully powering on the controller. This late
3106 * registration is required so that LE SMP can clearly decide if
3107 * the public address or static address is used.
3111 err = hci_write_ssp_mode_sync(hdev, 0x01);
3115 err = hci_write_le_host_supported_sync(hdev, 0x01, 0x00);
3119 err = hci_powered_update_adv_sync(hdev);
3123 err = hci_write_auth_enable_sync(hdev);
3127 if (lmp_bredr_capable(hdev)) {
3128 if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE))
3129 hci_write_fast_connectable_sync(hdev, true);
3131 hci_write_fast_connectable_sync(hdev, false);
3132 hci_update_scan_sync(hdev);
3133 hci_update_class_sync(hdev);
3134 hci_update_name_sync(hdev);
3135 hci_update_eir_sync(hdev);
3142 * hci_dev_get_bd_addr_from_property - Get the Bluetooth Device Address
3143 * (BD_ADDR) for a HCI device from
3144 * a firmware node property.
3145 * @hdev: The HCI device
3147 * Search the firmware node for 'local-bd-address'.
3149 * All-zero BD addresses are rejected, because those could be properties
3150 * that exist in the firmware tables, but were not updated by the firmware. For
3151 * example, the DTS could define 'local-bd-address', with zero BD addresses.
3153 static void hci_dev_get_bd_addr_from_property(struct hci_dev *hdev)
3155 struct fwnode_handle *fwnode = dev_fwnode(hdev->dev.parent);
3159 ret = fwnode_property_read_u8_array(fwnode, "local-bd-address",
3160 (u8 *)&ba, sizeof(ba));
3161 if (ret < 0 || !bacmp(&ba, BDADDR_ANY))
3164 bacpy(&hdev->public_addr, &ba);
3167 struct hci_init_stage {
3168 int (*func)(struct hci_dev *hdev);
3171 /* Run init stage NULL terminated function table */
3172 static int hci_init_stage_sync(struct hci_dev *hdev,
3173 const struct hci_init_stage *stage)
3177 for (i = 0; stage[i].func; i++) {
3180 err = stage[i].func(hdev);
3188 /* Read Local Version */
3189 static int hci_read_local_version_sync(struct hci_dev *hdev)
3191 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_VERSION,
3192 0, NULL, HCI_CMD_TIMEOUT);
3195 /* Read BD Address */
3196 static int hci_read_bd_addr_sync(struct hci_dev *hdev)
3198 return __hci_cmd_sync_status(hdev, HCI_OP_READ_BD_ADDR,
3199 0, NULL, HCI_CMD_TIMEOUT);
3202 #define HCI_INIT(_func) \
3207 static const struct hci_init_stage hci_init0[] = {
3208 /* HCI_OP_READ_LOCAL_VERSION */
3209 HCI_INIT(hci_read_local_version_sync),
3210 /* HCI_OP_READ_BD_ADDR */
3211 HCI_INIT(hci_read_bd_addr_sync),
3215 int hci_reset_sync(struct hci_dev *hdev)
3219 set_bit(HCI_RESET, &hdev->flags);
3221 err = __hci_cmd_sync_status(hdev, HCI_OP_RESET, 0, NULL,
3229 static int hci_init0_sync(struct hci_dev *hdev)
3233 bt_dev_dbg(hdev, "");
3236 if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) {
3237 err = hci_reset_sync(hdev);
3242 return hci_init_stage_sync(hdev, hci_init0);
3245 static int hci_unconf_init_sync(struct hci_dev *hdev)
3249 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
3252 err = hci_init0_sync(hdev);
3256 if (hci_dev_test_flag(hdev, HCI_SETUP))
3257 hci_debugfs_create_basic(hdev);
3262 /* Read Local Supported Features. */
3263 static int hci_read_local_features_sync(struct hci_dev *hdev)
3265 /* Not all AMP controllers support this command */
3266 if (hdev->dev_type == HCI_AMP && !(hdev->commands[14] & 0x20))
3269 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_FEATURES,
3270 0, NULL, HCI_CMD_TIMEOUT);
3273 /* BR Controller init stage 1 command sequence */
3274 static const struct hci_init_stage br_init1[] = {
3275 /* HCI_OP_READ_LOCAL_FEATURES */
3276 HCI_INIT(hci_read_local_features_sync),
3277 /* HCI_OP_READ_LOCAL_VERSION */
3278 HCI_INIT(hci_read_local_version_sync),
3279 /* HCI_OP_READ_BD_ADDR */
3280 HCI_INIT(hci_read_bd_addr_sync),
3284 /* Read Local Commands */
3285 static int hci_read_local_cmds_sync(struct hci_dev *hdev)
3287 /* All Bluetooth 1.2 and later controllers should support the
3288 * HCI command for reading the local supported commands.
3290 * Unfortunately some controllers indicate Bluetooth 1.2 support,
3291 * but do not have support for this command. If that is the case,
3292 * the driver can quirk the behavior and skip reading the local
3293 * supported commands.
3295 if (hdev->hci_ver > BLUETOOTH_VER_1_1 &&
3296 !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks))
3297 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_COMMANDS,
3298 0, NULL, HCI_CMD_TIMEOUT);
3303 /* Read Local AMP Info */
3304 static int hci_read_local_amp_info_sync(struct hci_dev *hdev)
3306 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_AMP_INFO,
3307 0, NULL, HCI_CMD_TIMEOUT);
3310 /* Read Data Blk size */
3311 static int hci_read_data_block_size_sync(struct hci_dev *hdev)
3313 return __hci_cmd_sync_status(hdev, HCI_OP_READ_DATA_BLOCK_SIZE,
3314 0, NULL, HCI_CMD_TIMEOUT);
3317 /* Read Flow Control Mode */
3318 static int hci_read_flow_control_mode_sync(struct hci_dev *hdev)
3320 return __hci_cmd_sync_status(hdev, HCI_OP_READ_FLOW_CONTROL_MODE,
3321 0, NULL, HCI_CMD_TIMEOUT);
3324 /* Read Location Data */
3325 static int hci_read_location_data_sync(struct hci_dev *hdev)
3327 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCATION_DATA,
3328 0, NULL, HCI_CMD_TIMEOUT);
3331 /* AMP Controller init stage 1 command sequence */
3332 static const struct hci_init_stage amp_init1[] = {
3333 /* HCI_OP_READ_LOCAL_VERSION */
3334 HCI_INIT(hci_read_local_version_sync),
3335 /* HCI_OP_READ_LOCAL_COMMANDS */
3336 HCI_INIT(hci_read_local_cmds_sync),
3337 /* HCI_OP_READ_LOCAL_AMP_INFO */
3338 HCI_INIT(hci_read_local_amp_info_sync),
3339 /* HCI_OP_READ_DATA_BLOCK_SIZE */
3340 HCI_INIT(hci_read_data_block_size_sync),
3341 /* HCI_OP_READ_FLOW_CONTROL_MODE */
3342 HCI_INIT(hci_read_flow_control_mode_sync),
3343 /* HCI_OP_READ_LOCATION_DATA */
3344 HCI_INIT(hci_read_location_data_sync),
3348 static int hci_init1_sync(struct hci_dev *hdev)
3352 bt_dev_dbg(hdev, "");
3355 if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) {
3356 err = hci_reset_sync(hdev);
3361 switch (hdev->dev_type) {
3363 hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED;
3364 return hci_init_stage_sync(hdev, br_init1);
3366 hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED;
3367 return hci_init_stage_sync(hdev, amp_init1);
3369 bt_dev_err(hdev, "Unknown device type %d", hdev->dev_type);
3376 /* AMP Controller init stage 2 command sequence */
3377 static const struct hci_init_stage amp_init2[] = {
3378 /* HCI_OP_READ_LOCAL_FEATURES */
3379 HCI_INIT(hci_read_local_features_sync),
3383 /* Read Buffer Size (ACL mtu, max pkt, etc.) */
3384 static int hci_read_buffer_size_sync(struct hci_dev *hdev)
3386 return __hci_cmd_sync_status(hdev, HCI_OP_READ_BUFFER_SIZE,
3387 0, NULL, HCI_CMD_TIMEOUT);
3390 /* Read Class of Device */
3391 static int hci_read_dev_class_sync(struct hci_dev *hdev)
3393 return __hci_cmd_sync_status(hdev, HCI_OP_READ_CLASS_OF_DEV,
3394 0, NULL, HCI_CMD_TIMEOUT);
3397 /* Read Local Name */
3398 static int hci_read_local_name_sync(struct hci_dev *hdev)
3400 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_NAME,
3401 0, NULL, HCI_CMD_TIMEOUT);
3404 /* Read Voice Setting */
3405 static int hci_read_voice_setting_sync(struct hci_dev *hdev)
3407 return __hci_cmd_sync_status(hdev, HCI_OP_READ_VOICE_SETTING,
3408 0, NULL, HCI_CMD_TIMEOUT);
3411 /* Read Number of Supported IAC */
3412 static int hci_read_num_supported_iac_sync(struct hci_dev *hdev)
3414 return __hci_cmd_sync_status(hdev, HCI_OP_READ_NUM_SUPPORTED_IAC,
3415 0, NULL, HCI_CMD_TIMEOUT);
3418 /* Read Current IAC LAP */
3419 static int hci_read_current_iac_lap_sync(struct hci_dev *hdev)
3421 return __hci_cmd_sync_status(hdev, HCI_OP_READ_CURRENT_IAC_LAP,
3422 0, NULL, HCI_CMD_TIMEOUT);
3425 static int hci_set_event_filter_sync(struct hci_dev *hdev, u8 flt_type,
3426 u8 cond_type, bdaddr_t *bdaddr,
3429 struct hci_cp_set_event_filter cp;
3431 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
3434 if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks))
3437 memset(&cp, 0, sizeof(cp));
3438 cp.flt_type = flt_type;
3440 if (flt_type != HCI_FLT_CLEAR_ALL) {
3441 cp.cond_type = cond_type;
3442 bacpy(&cp.addr_conn_flt.bdaddr, bdaddr);
3443 cp.addr_conn_flt.auto_accept = auto_accept;
3446 return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_FLT,
3447 flt_type == HCI_FLT_CLEAR_ALL ?
3448 sizeof(cp.flt_type) : sizeof(cp), &cp,
3452 static int hci_clear_event_filter_sync(struct hci_dev *hdev)
3454 if (!hci_dev_test_flag(hdev, HCI_EVENT_FILTER_CONFIGURED))
3457 /* In theory the state machine should not reach here unless
3458 * a hci_set_event_filter_sync() call succeeds, but we do
3459 * the check both for parity and as a future reminder.
3461 if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks))
3464 return hci_set_event_filter_sync(hdev, HCI_FLT_CLEAR_ALL, 0x00,
3468 /* Connection accept timeout ~20 secs */
3469 static int hci_write_ca_timeout_sync(struct hci_dev *hdev)
3471 __le16 param = cpu_to_le16(0x7d00);
3473 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CA_TIMEOUT,
3474 sizeof(param), ¶m, HCI_CMD_TIMEOUT);
3477 /* BR Controller init stage 2 command sequence */
3478 static const struct hci_init_stage br_init2[] = {
3479 /* HCI_OP_READ_BUFFER_SIZE */
3480 HCI_INIT(hci_read_buffer_size_sync),
3481 /* HCI_OP_READ_CLASS_OF_DEV */
3482 HCI_INIT(hci_read_dev_class_sync),
3483 /* HCI_OP_READ_LOCAL_NAME */
3484 HCI_INIT(hci_read_local_name_sync),
3485 /* HCI_OP_READ_VOICE_SETTING */
3486 HCI_INIT(hci_read_voice_setting_sync),
3487 /* HCI_OP_READ_NUM_SUPPORTED_IAC */
3488 HCI_INIT(hci_read_num_supported_iac_sync),
3489 /* HCI_OP_READ_CURRENT_IAC_LAP */
3490 HCI_INIT(hci_read_current_iac_lap_sync),
3491 /* HCI_OP_SET_EVENT_FLT */
3492 HCI_INIT(hci_clear_event_filter_sync),
3493 /* HCI_OP_WRITE_CA_TIMEOUT */
3494 HCI_INIT(hci_write_ca_timeout_sync),
3498 static int hci_write_ssp_mode_1_sync(struct hci_dev *hdev)
3502 if (!lmp_ssp_capable(hdev) || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
3505 /* When SSP is available, then the host features page
3506 * should also be available as well. However some
3507 * controllers list the max_page as 0 as long as SSP
3508 * has not been enabled. To achieve proper debugging
3509 * output, force the minimum max_page to 1 at least.
3511 hdev->max_page = 0x01;
3513 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_MODE,
3514 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
3517 static int hci_write_eir_sync(struct hci_dev *hdev)
3519 struct hci_cp_write_eir cp;
3521 if (!lmp_ssp_capable(hdev) || hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
3524 memset(hdev->eir, 0, sizeof(hdev->eir));
3525 memset(&cp, 0, sizeof(cp));
3527 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp,
3531 static int hci_write_inquiry_mode_sync(struct hci_dev *hdev)
3535 if (!lmp_inq_rssi_capable(hdev) &&
3536 !test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks))
3539 /* If Extended Inquiry Result events are supported, then
3540 * they are clearly preferred over Inquiry Result with RSSI
3543 mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01;
3545 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_INQUIRY_MODE,
3546 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
3549 static int hci_read_inq_rsp_tx_power_sync(struct hci_dev *hdev)
3551 if (!lmp_inq_tx_pwr_capable(hdev))
3554 return __hci_cmd_sync_status(hdev, HCI_OP_READ_INQ_RSP_TX_POWER,
3555 0, NULL, HCI_CMD_TIMEOUT);
3558 static int hci_read_local_ext_features_sync(struct hci_dev *hdev, u8 page)
3560 struct hci_cp_read_local_ext_features cp;
3562 if (!lmp_ext_feat_capable(hdev))
3565 memset(&cp, 0, sizeof(cp));
3568 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_EXT_FEATURES,
3569 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3572 static int hci_read_local_ext_features_1_sync(struct hci_dev *hdev)
3574 return hci_read_local_ext_features_sync(hdev, 0x01);
3577 /* HCI Controller init stage 2 command sequence */
3578 static const struct hci_init_stage hci_init2[] = {
3579 /* HCI_OP_READ_LOCAL_COMMANDS */
3580 HCI_INIT(hci_read_local_cmds_sync),
3581 /* HCI_OP_WRITE_SSP_MODE */
3582 HCI_INIT(hci_write_ssp_mode_1_sync),
3583 /* HCI_OP_WRITE_EIR */
3584 HCI_INIT(hci_write_eir_sync),
3585 /* HCI_OP_WRITE_INQUIRY_MODE */
3586 HCI_INIT(hci_write_inquiry_mode_sync),
3587 /* HCI_OP_READ_INQ_RSP_TX_POWER */
3588 HCI_INIT(hci_read_inq_rsp_tx_power_sync),
3589 /* HCI_OP_READ_LOCAL_EXT_FEATURES */
3590 HCI_INIT(hci_read_local_ext_features_1_sync),
3591 /* HCI_OP_WRITE_AUTH_ENABLE */
3592 HCI_INIT(hci_write_auth_enable_sync),
3596 /* Read LE Buffer Size */
3597 static int hci_le_read_buffer_size_sync(struct hci_dev *hdev)
3599 /* Use Read LE Buffer Size V2 if supported */
3600 if (iso_capable(hdev) && hdev->commands[41] & 0x20)
3601 return __hci_cmd_sync_status(hdev,
3602 HCI_OP_LE_READ_BUFFER_SIZE_V2,
3603 0, NULL, HCI_CMD_TIMEOUT);
3605 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_BUFFER_SIZE,
3606 0, NULL, HCI_CMD_TIMEOUT);
3609 /* Read LE Local Supported Features */
3610 static int hci_le_read_local_features_sync(struct hci_dev *hdev)
3612 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_LOCAL_FEATURES,
3613 0, NULL, HCI_CMD_TIMEOUT);
3616 /* Read LE Supported States */
3617 static int hci_le_read_supported_states_sync(struct hci_dev *hdev)
3619 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_SUPPORTED_STATES,
3620 0, NULL, HCI_CMD_TIMEOUT);
3623 /* LE Controller init stage 2 command sequence */
3624 static const struct hci_init_stage le_init2[] = {
3625 /* HCI_OP_LE_READ_LOCAL_FEATURES */
3626 HCI_INIT(hci_le_read_local_features_sync),
3627 /* HCI_OP_LE_READ_BUFFER_SIZE */
3628 HCI_INIT(hci_le_read_buffer_size_sync),
3629 /* HCI_OP_LE_READ_SUPPORTED_STATES */
3630 HCI_INIT(hci_le_read_supported_states_sync),
3634 static int hci_init2_sync(struct hci_dev *hdev)
3638 bt_dev_dbg(hdev, "");
3640 if (hdev->dev_type == HCI_AMP)
3641 return hci_init_stage_sync(hdev, amp_init2);
3643 err = hci_init_stage_sync(hdev, hci_init2);
3647 if (lmp_bredr_capable(hdev)) {
3648 err = hci_init_stage_sync(hdev, br_init2);
3652 hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED);
3655 if (lmp_le_capable(hdev)) {
3656 err = hci_init_stage_sync(hdev, le_init2);
3659 /* LE-only controllers have LE implicitly enabled */
3660 if (!lmp_bredr_capable(hdev))
3661 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
3667 static int hci_set_event_mask_sync(struct hci_dev *hdev)
3669 /* The second byte is 0xff instead of 0x9f (two reserved bits
3670 * disabled) since a Broadcom 1.2 dongle doesn't respond to the
3671 * command otherwise.
3673 u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 };
3675 /* CSR 1.1 dongles does not accept any bitfield so don't try to set
3676 * any event mask for pre 1.2 devices.
3678 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
3681 if (lmp_bredr_capable(hdev)) {
3682 events[4] |= 0x01; /* Flow Specification Complete */
3684 /* Don't set Disconnect Complete when suspended as that
3685 * would wakeup the host when disconnecting due to
3688 if (hdev->suspended)
3691 /* Use a different default for LE-only devices */
3692 memset(events, 0, sizeof(events));
3693 events[1] |= 0x20; /* Command Complete */
3694 events[1] |= 0x40; /* Command Status */
3695 events[1] |= 0x80; /* Hardware Error */
3697 /* If the controller supports the Disconnect command, enable
3698 * the corresponding event. In addition enable packet flow
3699 * control related events.
3701 if (hdev->commands[0] & 0x20) {
3702 /* Don't set Disconnect Complete when suspended as that
3703 * would wakeup the host when disconnecting due to
3706 if (!hdev->suspended)
3707 events[0] |= 0x10; /* Disconnection Complete */
3708 events[2] |= 0x04; /* Number of Completed Packets */
3709 events[3] |= 0x02; /* Data Buffer Overflow */
3712 /* If the controller supports the Read Remote Version
3713 * Information command, enable the corresponding event.
3715 if (hdev->commands[2] & 0x80)
3716 events[1] |= 0x08; /* Read Remote Version Information
3720 if (hdev->le_features[0] & HCI_LE_ENCRYPTION) {
3721 events[0] |= 0x80; /* Encryption Change */
3722 events[5] |= 0x80; /* Encryption Key Refresh Complete */
3726 if (lmp_inq_rssi_capable(hdev) ||
3727 test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks))
3728 events[4] |= 0x02; /* Inquiry Result with RSSI */
3730 if (lmp_ext_feat_capable(hdev))
3731 events[4] |= 0x04; /* Read Remote Extended Features Complete */
3733 if (lmp_esco_capable(hdev)) {
3734 events[5] |= 0x08; /* Synchronous Connection Complete */
3735 events[5] |= 0x10; /* Synchronous Connection Changed */
3738 if (lmp_sniffsubr_capable(hdev))
3739 events[5] |= 0x20; /* Sniff Subrating */
3741 if (lmp_pause_enc_capable(hdev))
3742 events[5] |= 0x80; /* Encryption Key Refresh Complete */
3744 if (lmp_ext_inq_capable(hdev))
3745 events[5] |= 0x40; /* Extended Inquiry Result */
3747 if (lmp_no_flush_capable(hdev))
3748 events[7] |= 0x01; /* Enhanced Flush Complete */
3750 if (lmp_lsto_capable(hdev))
3751 events[6] |= 0x80; /* Link Supervision Timeout Changed */
3753 if (lmp_ssp_capable(hdev)) {
3754 events[6] |= 0x01; /* IO Capability Request */
3755 events[6] |= 0x02; /* IO Capability Response */
3756 events[6] |= 0x04; /* User Confirmation Request */
3757 events[6] |= 0x08; /* User Passkey Request */
3758 events[6] |= 0x10; /* Remote OOB Data Request */
3759 events[6] |= 0x20; /* Simple Pairing Complete */
3760 events[7] |= 0x04; /* User Passkey Notification */
3761 events[7] |= 0x08; /* Keypress Notification */
3762 events[7] |= 0x10; /* Remote Host Supported
3763 * Features Notification
3767 if (lmp_le_capable(hdev))
3768 events[7] |= 0x20; /* LE Meta-Event */
3770 return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_MASK,
3771 sizeof(events), events, HCI_CMD_TIMEOUT);
3774 static int hci_read_stored_link_key_sync(struct hci_dev *hdev)
3776 struct hci_cp_read_stored_link_key cp;
3778 if (!(hdev->commands[6] & 0x20) ||
3779 test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks))
3782 memset(&cp, 0, sizeof(cp));
3783 bacpy(&cp.bdaddr, BDADDR_ANY);
3786 return __hci_cmd_sync_status(hdev, HCI_OP_READ_STORED_LINK_KEY,
3787 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3790 static int hci_setup_link_policy_sync(struct hci_dev *hdev)
3792 struct hci_cp_write_def_link_policy cp;
3793 u16 link_policy = 0;
3795 if (!(hdev->commands[5] & 0x10))
3798 memset(&cp, 0, sizeof(cp));
3800 if (lmp_rswitch_capable(hdev))
3801 link_policy |= HCI_LP_RSWITCH;
3802 if (lmp_hold_capable(hdev))
3803 link_policy |= HCI_LP_HOLD;
3804 if (lmp_sniff_capable(hdev))
3805 link_policy |= HCI_LP_SNIFF;
3806 if (lmp_park_capable(hdev))
3807 link_policy |= HCI_LP_PARK;
3809 cp.policy = cpu_to_le16(link_policy);
3811 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_DEF_LINK_POLICY,
3812 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3815 static int hci_read_page_scan_activity_sync(struct hci_dev *hdev)
3817 if (!(hdev->commands[8] & 0x01))
3820 return __hci_cmd_sync_status(hdev, HCI_OP_READ_PAGE_SCAN_ACTIVITY,
3821 0, NULL, HCI_CMD_TIMEOUT);
3824 static int hci_read_def_err_data_reporting_sync(struct hci_dev *hdev)
3826 if (!(hdev->commands[18] & 0x04) ||
3827 !(hdev->features[0][6] & LMP_ERR_DATA_REPORTING) ||
3828 test_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks))
3831 return __hci_cmd_sync_status(hdev, HCI_OP_READ_DEF_ERR_DATA_REPORTING,
3832 0, NULL, HCI_CMD_TIMEOUT);
3835 static int hci_read_page_scan_type_sync(struct hci_dev *hdev)
3837 /* Some older Broadcom based Bluetooth 1.2 controllers do not
3838 * support the Read Page Scan Type command. Check support for
3839 * this command in the bit mask of supported commands.
3841 if (!(hdev->commands[13] & 0x01))
3844 return __hci_cmd_sync_status(hdev, HCI_OP_READ_PAGE_SCAN_TYPE,
3845 0, NULL, HCI_CMD_TIMEOUT);
3848 /* Read features beyond page 1 if available */
3849 static int hci_read_local_ext_features_all_sync(struct hci_dev *hdev)
3854 if (!lmp_ext_feat_capable(hdev))
3857 for (page = 2; page < HCI_MAX_PAGES && page <= hdev->max_page;
3859 err = hci_read_local_ext_features_sync(hdev, page);
3867 /* HCI Controller init stage 3 command sequence */
3868 static const struct hci_init_stage hci_init3[] = {
3869 /* HCI_OP_SET_EVENT_MASK */
3870 HCI_INIT(hci_set_event_mask_sync),
3871 /* HCI_OP_READ_STORED_LINK_KEY */
3872 HCI_INIT(hci_read_stored_link_key_sync),
3873 /* HCI_OP_WRITE_DEF_LINK_POLICY */
3874 HCI_INIT(hci_setup_link_policy_sync),
3875 /* HCI_OP_READ_PAGE_SCAN_ACTIVITY */
3876 HCI_INIT(hci_read_page_scan_activity_sync),
3877 /* HCI_OP_READ_DEF_ERR_DATA_REPORTING */
3878 HCI_INIT(hci_read_def_err_data_reporting_sync),
3879 /* HCI_OP_READ_PAGE_SCAN_TYPE */
3880 HCI_INIT(hci_read_page_scan_type_sync),
3881 /* HCI_OP_READ_LOCAL_EXT_FEATURES */
3882 HCI_INIT(hci_read_local_ext_features_all_sync),
3886 static int hci_le_set_event_mask_sync(struct hci_dev *hdev)
3890 if (!lmp_le_capable(hdev))
3893 memset(events, 0, sizeof(events));
3895 if (hdev->le_features[0] & HCI_LE_ENCRYPTION)
3896 events[0] |= 0x10; /* LE Long Term Key Request */
3898 /* If controller supports the Connection Parameters Request
3899 * Link Layer Procedure, enable the corresponding event.
3901 if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC)
3902 /* LE Remote Connection Parameter Request */
3905 /* If the controller supports the Data Length Extension
3906 * feature, enable the corresponding event.
3908 if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT)
3909 events[0] |= 0x40; /* LE Data Length Change */
3911 /* If the controller supports LL Privacy feature or LE Extended Adv,
3912 * enable the corresponding event.
3914 if (use_enhanced_conn_complete(hdev))
3915 events[1] |= 0x02; /* LE Enhanced Connection Complete */
3917 /* If the controller supports Extended Scanner Filter
3918 * Policies, enable the corresponding event.
3920 if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY)
3921 events[1] |= 0x04; /* LE Direct Advertising Report */
3923 /* If the controller supports Channel Selection Algorithm #2
3924 * feature, enable the corresponding event.
3926 if (hdev->le_features[1] & HCI_LE_CHAN_SEL_ALG2)
3927 events[2] |= 0x08; /* LE Channel Selection Algorithm */
3929 /* If the controller supports the LE Set Scan Enable command,
3930 * enable the corresponding advertising report event.
3932 if (hdev->commands[26] & 0x08)
3933 events[0] |= 0x02; /* LE Advertising Report */
3935 /* If the controller supports the LE Create Connection
3936 * command, enable the corresponding event.
3938 if (hdev->commands[26] & 0x10)
3939 events[0] |= 0x01; /* LE Connection Complete */
3941 /* If the controller supports the LE Connection Update
3942 * command, enable the corresponding event.
3944 if (hdev->commands[27] & 0x04)
3945 events[0] |= 0x04; /* LE Connection Update Complete */
3947 /* If the controller supports the LE Read Remote Used Features
3948 * command, enable the corresponding event.
3950 if (hdev->commands[27] & 0x20)
3951 /* LE Read Remote Used Features Complete */
3954 /* If the controller supports the LE Read Local P-256
3955 * Public Key command, enable the corresponding event.
3957 if (hdev->commands[34] & 0x02)
3958 /* LE Read Local P-256 Public Key Complete */
3961 /* If the controller supports the LE Generate DHKey
3962 * command, enable the corresponding event.
3964 if (hdev->commands[34] & 0x04)
3965 events[1] |= 0x01; /* LE Generate DHKey Complete */
3967 /* If the controller supports the LE Set Default PHY or
3968 * LE Set PHY commands, enable the corresponding event.
3970 if (hdev->commands[35] & (0x20 | 0x40))
3971 events[1] |= 0x08; /* LE PHY Update Complete */
3973 /* If the controller supports LE Set Extended Scan Parameters
3974 * and LE Set Extended Scan Enable commands, enable the
3975 * corresponding event.
3977 if (use_ext_scan(hdev))
3978 events[1] |= 0x10; /* LE Extended Advertising Report */
3980 /* If the controller supports the LE Extended Advertising
3981 * command, enable the corresponding event.
3983 if (ext_adv_capable(hdev))
3984 events[2] |= 0x02; /* LE Advertising Set Terminated */
3986 if (cis_capable(hdev)) {
3987 events[3] |= 0x01; /* LE CIS Established */
3988 if (cis_peripheral_capable(hdev))
3989 events[3] |= 0x02; /* LE CIS Request */
3992 if (bis_capable(hdev)) {
3993 events[3] |= 0x04; /* LE Create BIG Complete */
3994 events[3] |= 0x08; /* LE Terminate BIG Complete */
3995 events[3] |= 0x10; /* LE BIG Sync Established */
3996 events[3] |= 0x20; /* LE BIG Sync Loss */
3999 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EVENT_MASK,
4000 sizeof(events), events, HCI_CMD_TIMEOUT);
4003 /* Read LE Advertising Channel TX Power */
4004 static int hci_le_read_adv_tx_power_sync(struct hci_dev *hdev)
4006 if ((hdev->commands[25] & 0x40) && !ext_adv_capable(hdev)) {
4007 /* HCI TS spec forbids mixing of legacy and extended
4008 * advertising commands wherein READ_ADV_TX_POWER is
4009 * also included. So do not call it if extended adv
4010 * is supported otherwise controller will return
4011 * COMMAND_DISALLOWED for extended commands.
4013 return __hci_cmd_sync_status(hdev,
4014 HCI_OP_LE_READ_ADV_TX_POWER,
4015 0, NULL, HCI_CMD_TIMEOUT);
4021 /* Read LE Min/Max Tx Power*/
4022 static int hci_le_read_tx_power_sync(struct hci_dev *hdev)
4024 if (!(hdev->commands[38] & 0x80) ||
4025 test_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks))
4028 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_TRANSMIT_POWER,
4029 0, NULL, HCI_CMD_TIMEOUT);
4032 /* Read LE Accept List Size */
4033 static int hci_le_read_accept_list_size_sync(struct hci_dev *hdev)
4035 if (!(hdev->commands[26] & 0x40))
4038 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4039 0, NULL, HCI_CMD_TIMEOUT);
4042 /* Clear LE Accept List */
4043 static int hci_le_clear_accept_list_sync(struct hci_dev *hdev)
4045 if (!(hdev->commands[26] & 0x80))
4048 return __hci_cmd_sync_status(hdev, HCI_OP_LE_CLEAR_ACCEPT_LIST, 0, NULL,
4052 /* Read LE Resolving List Size */
4053 static int hci_le_read_resolv_list_size_sync(struct hci_dev *hdev)
4055 if (!(hdev->commands[34] & 0x40))
4058 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_RESOLV_LIST_SIZE,
4059 0, NULL, HCI_CMD_TIMEOUT);
4062 /* Clear LE Resolving List */
4063 static int hci_le_clear_resolv_list_sync(struct hci_dev *hdev)
4065 if (!(hdev->commands[34] & 0x20))
4068 return __hci_cmd_sync_status(hdev, HCI_OP_LE_CLEAR_RESOLV_LIST, 0, NULL,
4072 /* Set RPA timeout */
4073 static int hci_le_set_rpa_timeout_sync(struct hci_dev *hdev)
4075 __le16 timeout = cpu_to_le16(hdev->rpa_timeout);
4077 if (!(hdev->commands[35] & 0x04))
4080 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_RPA_TIMEOUT,
4081 sizeof(timeout), &timeout,
4085 /* Read LE Maximum Data Length */
4086 static int hci_le_read_max_data_len_sync(struct hci_dev *hdev)
4088 if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT))
4091 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL,
4095 /* Read LE Suggested Default Data Length */
4096 static int hci_le_read_def_data_len_sync(struct hci_dev *hdev)
4098 if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT))
4101 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL,
4105 /* Read LE Number of Supported Advertising Sets */
4106 static int hci_le_read_num_support_adv_sets_sync(struct hci_dev *hdev)
4108 if (!ext_adv_capable(hdev))
4111 return __hci_cmd_sync_status(hdev,
4112 HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4113 0, NULL, HCI_CMD_TIMEOUT);
4116 /* Write LE Host Supported */
4117 static int hci_set_le_support_sync(struct hci_dev *hdev)
4119 struct hci_cp_write_le_host_supported cp;
4121 /* LE-only devices do not support explicit enablement */
4122 if (!lmp_bredr_capable(hdev))
4125 memset(&cp, 0, sizeof(cp));
4127 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) {
4132 if (cp.le == lmp_host_le_capable(hdev))
4135 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED,
4136 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4139 /* LE Set Host Feature */
4140 static int hci_le_set_host_feature_sync(struct hci_dev *hdev)
4142 struct hci_cp_le_set_host_feature cp;
4144 if (!iso_capable(hdev))
4147 memset(&cp, 0, sizeof(cp));
4149 /* Isochronous Channels (Host Support) */
4153 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_HOST_FEATURE,
4154 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4157 /* LE Controller init stage 3 command sequence */
4158 static const struct hci_init_stage le_init3[] = {
4159 /* HCI_OP_LE_SET_EVENT_MASK */
4160 HCI_INIT(hci_le_set_event_mask_sync),
4161 /* HCI_OP_LE_READ_ADV_TX_POWER */
4162 HCI_INIT(hci_le_read_adv_tx_power_sync),
4163 /* HCI_OP_LE_READ_TRANSMIT_POWER */
4164 HCI_INIT(hci_le_read_tx_power_sync),
4165 /* HCI_OP_LE_READ_ACCEPT_LIST_SIZE */
4166 HCI_INIT(hci_le_read_accept_list_size_sync),
4167 /* HCI_OP_LE_CLEAR_ACCEPT_LIST */
4168 HCI_INIT(hci_le_clear_accept_list_sync),
4169 /* HCI_OP_LE_READ_RESOLV_LIST_SIZE */
4170 HCI_INIT(hci_le_read_resolv_list_size_sync),
4171 /* HCI_OP_LE_CLEAR_RESOLV_LIST */
4172 HCI_INIT(hci_le_clear_resolv_list_sync),
4173 /* HCI_OP_LE_SET_RPA_TIMEOUT */
4174 HCI_INIT(hci_le_set_rpa_timeout_sync),
4175 /* HCI_OP_LE_READ_MAX_DATA_LEN */
4176 HCI_INIT(hci_le_read_max_data_len_sync),
4177 /* HCI_OP_LE_READ_DEF_DATA_LEN */
4178 HCI_INIT(hci_le_read_def_data_len_sync),
4179 /* HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS */
4180 HCI_INIT(hci_le_read_num_support_adv_sets_sync),
4181 /* HCI_OP_WRITE_LE_HOST_SUPPORTED */
4182 HCI_INIT(hci_set_le_support_sync),
4183 /* HCI_OP_LE_SET_HOST_FEATURE */
4184 HCI_INIT(hci_le_set_host_feature_sync),
4188 static int hci_init3_sync(struct hci_dev *hdev)
4192 bt_dev_dbg(hdev, "");
4194 err = hci_init_stage_sync(hdev, hci_init3);
4198 if (lmp_le_capable(hdev))
4199 return hci_init_stage_sync(hdev, le_init3);
4204 static int hci_delete_stored_link_key_sync(struct hci_dev *hdev)
4206 struct hci_cp_delete_stored_link_key cp;
4208 /* Some Broadcom based Bluetooth controllers do not support the
4209 * Delete Stored Link Key command. They are clearly indicating its
4210 * absence in the bit mask of supported commands.
4212 * Check the supported commands and only if the command is marked
4213 * as supported send it. If not supported assume that the controller
4214 * does not have actual support for stored link keys which makes this
4215 * command redundant anyway.
4217 * Some controllers indicate that they support handling deleting
4218 * stored link keys, but they don't. The quirk lets a driver
4219 * just disable this command.
4221 if (!(hdev->commands[6] & 0x80) ||
4222 test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks))
4225 memset(&cp, 0, sizeof(cp));
4226 bacpy(&cp.bdaddr, BDADDR_ANY);
4227 cp.delete_all = 0x01;
4229 return __hci_cmd_sync_status(hdev, HCI_OP_DELETE_STORED_LINK_KEY,
4230 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4233 static int hci_set_event_mask_page_2_sync(struct hci_dev *hdev)
4235 u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
4236 bool changed = false;
4238 /* Set event mask page 2 if the HCI command for it is supported */
4239 if (!(hdev->commands[22] & 0x04))
4242 /* If Connectionless Peripheral Broadcast central role is supported
4243 * enable all necessary events for it.
4245 if (lmp_cpb_central_capable(hdev)) {
4246 events[1] |= 0x40; /* Triggered Clock Capture */
4247 events[1] |= 0x80; /* Synchronization Train Complete */
4248 events[2] |= 0x08; /* Truncated Page Complete */
4249 events[2] |= 0x20; /* CPB Channel Map Change */
4253 /* If Connectionless Peripheral Broadcast peripheral role is supported
4254 * enable all necessary events for it.
4256 if (lmp_cpb_peripheral_capable(hdev)) {
4257 events[2] |= 0x01; /* Synchronization Train Received */
4258 events[2] |= 0x02; /* CPB Receive */
4259 events[2] |= 0x04; /* CPB Timeout */
4260 events[2] |= 0x10; /* Peripheral Page Response Timeout */
4264 /* Enable Authenticated Payload Timeout Expired event if supported */
4265 if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) {
4270 /* Some Broadcom based controllers indicate support for Set Event
4271 * Mask Page 2 command, but then actually do not support it. Since
4272 * the default value is all bits set to zero, the command is only
4273 * required if the event mask has to be changed. In case no change
4274 * to the event mask is needed, skip this command.
4279 return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_MASK_PAGE_2,
4280 sizeof(events), events, HCI_CMD_TIMEOUT);
4283 /* Read local codec list if the HCI command is supported */
4284 static int hci_read_local_codecs_sync(struct hci_dev *hdev)
4286 if (hdev->commands[45] & 0x04)
4287 hci_read_supported_codecs_v2(hdev);
4288 else if (hdev->commands[29] & 0x20)
4289 hci_read_supported_codecs(hdev);
4294 /* Read local pairing options if the HCI command is supported */
4295 static int hci_read_local_pairing_opts_sync(struct hci_dev *hdev)
4297 if (!(hdev->commands[41] & 0x08))
4300 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_PAIRING_OPTS,
4301 0, NULL, HCI_CMD_TIMEOUT);
4304 /* Get MWS transport configuration if the HCI command is supported */
4305 static int hci_get_mws_transport_config_sync(struct hci_dev *hdev)
4307 if (!mws_transport_config_capable(hdev))
4310 return __hci_cmd_sync_status(hdev, HCI_OP_GET_MWS_TRANSPORT_CONFIG,
4311 0, NULL, HCI_CMD_TIMEOUT);
4314 /* Check for Synchronization Train support */
4315 static int hci_read_sync_train_params_sync(struct hci_dev *hdev)
4317 if (!lmp_sync_train_capable(hdev))
4320 return __hci_cmd_sync_status(hdev, HCI_OP_READ_SYNC_TRAIN_PARAMS,
4321 0, NULL, HCI_CMD_TIMEOUT);
4324 /* Enable Secure Connections if supported and configured */
4325 static int hci_write_sc_support_1_sync(struct hci_dev *hdev)
4329 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED) ||
4330 !bredr_sc_enabled(hdev))
4333 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SC_SUPPORT,
4334 sizeof(support), &support,
4338 /* Set erroneous data reporting if supported to the wideband speech
4341 static int hci_set_err_data_report_sync(struct hci_dev *hdev)
4343 struct hci_cp_write_def_err_data_reporting cp;
4344 bool enabled = hci_dev_test_flag(hdev, HCI_WIDEBAND_SPEECH_ENABLED);
4346 if (!(hdev->commands[18] & 0x08) ||
4347 !(hdev->features[0][6] & LMP_ERR_DATA_REPORTING) ||
4348 test_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks))
4351 if (enabled == hdev->err_data_reporting)
4354 memset(&cp, 0, sizeof(cp));
4355 cp.err_data_reporting = enabled ? ERR_DATA_REPORTING_ENABLED :
4356 ERR_DATA_REPORTING_DISABLED;
4358 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4359 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4362 static const struct hci_init_stage hci_init4[] = {
4363 /* HCI_OP_DELETE_STORED_LINK_KEY */
4364 HCI_INIT(hci_delete_stored_link_key_sync),
4365 /* HCI_OP_SET_EVENT_MASK_PAGE_2 */
4366 HCI_INIT(hci_set_event_mask_page_2_sync),
4367 /* HCI_OP_READ_LOCAL_CODECS */
4368 HCI_INIT(hci_read_local_codecs_sync),
4369 /* HCI_OP_READ_LOCAL_PAIRING_OPTS */
4370 HCI_INIT(hci_read_local_pairing_opts_sync),
4371 /* HCI_OP_GET_MWS_TRANSPORT_CONFIG */
4372 HCI_INIT(hci_get_mws_transport_config_sync),
4373 /* HCI_OP_READ_SYNC_TRAIN_PARAMS */
4374 HCI_INIT(hci_read_sync_train_params_sync),
4375 /* HCI_OP_WRITE_SC_SUPPORT */
4376 HCI_INIT(hci_write_sc_support_1_sync),
4377 /* HCI_OP_WRITE_DEF_ERR_DATA_REPORTING */
4378 HCI_INIT(hci_set_err_data_report_sync),
4382 /* Set Suggested Default Data Length to maximum if supported */
4383 static int hci_le_set_write_def_data_len_sync(struct hci_dev *hdev)
4385 struct hci_cp_le_write_def_data_len cp;
4387 if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT))
4390 memset(&cp, 0, sizeof(cp));
4391 cp.tx_len = cpu_to_le16(hdev->le_max_tx_len);
4392 cp.tx_time = cpu_to_le16(hdev->le_max_tx_time);
4394 return __hci_cmd_sync_status(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN,
4395 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4398 /* Set Default PHY parameters if command is supported */
4399 static int hci_le_set_default_phy_sync(struct hci_dev *hdev)
4401 struct hci_cp_le_set_default_phy cp;
4403 if (!(hdev->commands[35] & 0x20))
4406 memset(&cp, 0, sizeof(cp));
4408 cp.tx_phys = hdev->le_tx_def_phys;
4409 cp.rx_phys = hdev->le_rx_def_phys;
4411 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_DEFAULT_PHY,
4412 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4415 static const struct hci_init_stage le_init4[] = {
4416 /* HCI_OP_LE_WRITE_DEF_DATA_LEN */
4417 HCI_INIT(hci_le_set_write_def_data_len_sync),
4418 /* HCI_OP_LE_SET_DEFAULT_PHY */
4419 HCI_INIT(hci_le_set_default_phy_sync),
4423 static int hci_init4_sync(struct hci_dev *hdev)
4427 bt_dev_dbg(hdev, "");
4429 err = hci_init_stage_sync(hdev, hci_init4);
4433 if (lmp_le_capable(hdev))
4434 return hci_init_stage_sync(hdev, le_init4);
4439 static int hci_init_sync(struct hci_dev *hdev)
4443 err = hci_init1_sync(hdev);
4447 if (hci_dev_test_flag(hdev, HCI_SETUP))
4448 hci_debugfs_create_basic(hdev);
4450 err = hci_init2_sync(hdev);
4454 /* HCI_PRIMARY covers both single-mode LE, BR/EDR and dual-mode
4455 * BR/EDR/LE type controllers. AMP controllers only need the
4456 * first two stages of init.
4458 if (hdev->dev_type != HCI_PRIMARY)
4461 err = hci_init3_sync(hdev);
4465 err = hci_init4_sync(hdev);
4469 /* This function is only called when the controller is actually in
4470 * configured state. When the controller is marked as unconfigured,
4471 * this initialization procedure is not run.
4473 * It means that it is possible that a controller runs through its
4474 * setup phase and then discovers missing settings. If that is the
4475 * case, then this function will not be called. It then will only
4476 * be called during the config phase.
4478 * So only when in setup phase or config phase, create the debugfs
4479 * entries and register the SMP channels.
4481 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4482 !hci_dev_test_flag(hdev, HCI_CONFIG))
4485 hci_debugfs_create_common(hdev);
4487 if (lmp_bredr_capable(hdev))
4488 hci_debugfs_create_bredr(hdev);
4490 if (lmp_le_capable(hdev))
4491 hci_debugfs_create_le(hdev);
4496 #define HCI_QUIRK_BROKEN(_quirk, _desc) { HCI_QUIRK_BROKEN_##_quirk, _desc }
4498 static const struct {
4499 unsigned long quirk;
4501 } hci_broken_table[] = {
4502 HCI_QUIRK_BROKEN(LOCAL_COMMANDS,
4503 "HCI Read Local Supported Commands not supported"),
4504 HCI_QUIRK_BROKEN(STORED_LINK_KEY,
4505 "HCI Delete Stored Link Key command is advertised, "
4506 "but not supported."),
4507 HCI_QUIRK_BROKEN(ERR_DATA_REPORTING,
4508 "HCI Read Default Erroneous Data Reporting command is "
4509 "advertised, but not supported."),
4510 HCI_QUIRK_BROKEN(READ_TRANSMIT_POWER,
4511 "HCI Read Transmit Power Level command is advertised, "
4512 "but not supported."),
4513 HCI_QUIRK_BROKEN(FILTER_CLEAR_ALL,
4514 "HCI Set Event Filter command not supported."),
4515 HCI_QUIRK_BROKEN(ENHANCED_SETUP_SYNC_CONN,
4516 "HCI Enhanced Setup Synchronous Connection command is "
4517 "advertised, but not supported.")
4520 /* This function handles hdev setup stage:
4523 * Setup address if HCI_QUIRK_USE_BDADDR_PROPERTY is set.
4525 static int hci_dev_setup_sync(struct hci_dev *hdev)
4528 bool invalid_bdaddr;
4531 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4532 !test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks))
4535 bt_dev_dbg(hdev, "");
4537 hci_sock_dev_event(hdev, HCI_DEV_SETUP);
4540 ret = hdev->setup(hdev);
4542 for (i = 0; i < ARRAY_SIZE(hci_broken_table); i++) {
4543 if (test_bit(hci_broken_table[i].quirk, &hdev->quirks))
4544 bt_dev_warn(hdev, "%s", hci_broken_table[i].desc);
4547 /* The transport driver can set the quirk to mark the
4548 * BD_ADDR invalid before creating the HCI device or in
4549 * its setup callback.
4551 invalid_bdaddr = test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
4554 if (test_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks)) {
4555 if (!bacmp(&hdev->public_addr, BDADDR_ANY))
4556 hci_dev_get_bd_addr_from_property(hdev);
4558 if (bacmp(&hdev->public_addr, BDADDR_ANY) &&
4560 ret = hdev->set_bdaddr(hdev,
4561 &hdev->public_addr);
4563 /* If setting of the BD_ADDR from the device
4564 * property succeeds, then treat the address
4565 * as valid even if the invalid BD_ADDR
4566 * quirk indicates otherwise.
4569 invalid_bdaddr = false;
4574 /* The transport driver can set these quirks before
4575 * creating the HCI device or in its setup callback.
4577 * For the invalid BD_ADDR quirk it is possible that
4578 * it becomes a valid address if the bootloader does
4579 * provide it (see above).
4581 * In case any of them is set, the controller has to
4582 * start up as unconfigured.
4584 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) ||
4586 hci_dev_set_flag(hdev, HCI_UNCONFIGURED);
4588 /* For an unconfigured controller it is required to
4589 * read at least the version information provided by
4590 * the Read Local Version Information command.
4592 * If the set_bdaddr driver callback is provided, then
4593 * also the original Bluetooth public device address
4594 * will be read using the Read BD Address command.
4596 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
4597 return hci_unconf_init_sync(hdev);
4602 /* This function handles hdev init stage:
4604 * Calls hci_dev_setup_sync to perform setup stage
4605 * Calls hci_init_sync to perform HCI command init sequence
4607 static int hci_dev_init_sync(struct hci_dev *hdev)
4611 bt_dev_dbg(hdev, "");
4613 atomic_set(&hdev->cmd_cnt, 1);
4614 set_bit(HCI_INIT, &hdev->flags);
4616 ret = hci_dev_setup_sync(hdev);
4618 if (hci_dev_test_flag(hdev, HCI_CONFIG)) {
4619 /* If public address change is configured, ensure that
4620 * the address gets programmed. If the driver does not
4621 * support changing the public address, fail the power
4624 if (bacmp(&hdev->public_addr, BDADDR_ANY) &&
4626 ret = hdev->set_bdaddr(hdev, &hdev->public_addr);
4628 ret = -EADDRNOTAVAIL;
4632 if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) &&
4633 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
4634 ret = hci_init_sync(hdev);
4635 if (!ret && hdev->post_init)
4636 ret = hdev->post_init(hdev);
4640 /* If the HCI Reset command is clearing all diagnostic settings,
4641 * then they need to be reprogrammed after the init procedure
4644 if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) &&
4645 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4646 hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) && hdev->set_diag)
4647 ret = hdev->set_diag(hdev, true);
4649 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
4654 clear_bit(HCI_INIT, &hdev->flags);
4659 int hci_dev_open_sync(struct hci_dev *hdev)
4663 bt_dev_dbg(hdev, "");
4665 if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) {
4670 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4671 !hci_dev_test_flag(hdev, HCI_CONFIG)) {
4672 /* Check for rfkill but allow the HCI setup stage to
4673 * proceed (which in itself doesn't cause any RF activity).
4675 if (hci_dev_test_flag(hdev, HCI_RFKILLED)) {
4680 /* Check for valid public address or a configured static
4681 * random address, but let the HCI setup proceed to
4682 * be able to determine if there is a public address
4685 * In case of user channel usage, it is not important
4686 * if a public address or static random address is
4689 * This check is only valid for BR/EDR controllers
4690 * since AMP controllers do not have an address.
4692 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4693 hdev->dev_type == HCI_PRIMARY &&
4694 !bacmp(&hdev->bdaddr, BDADDR_ANY) &&
4695 !bacmp(&hdev->static_addr, BDADDR_ANY)) {
4696 ret = -EADDRNOTAVAIL;
4701 if (test_bit(HCI_UP, &hdev->flags)) {
4706 if (hdev->open(hdev)) {
4711 set_bit(HCI_RUNNING, &hdev->flags);
4712 hci_sock_dev_event(hdev, HCI_DEV_OPEN);
4714 ret = hci_dev_init_sync(hdev);
4717 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
4718 hci_adv_instances_set_rpa_expired(hdev, true);
4719 set_bit(HCI_UP, &hdev->flags);
4720 hci_sock_dev_event(hdev, HCI_DEV_UP);
4721 hci_leds_update_powered(hdev, true);
4722 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4723 !hci_dev_test_flag(hdev, HCI_CONFIG) &&
4724 !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) &&
4725 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4726 hci_dev_test_flag(hdev, HCI_MGMT) &&
4727 hdev->dev_type == HCI_PRIMARY) {
4728 ret = hci_powered_update_sync(hdev);
4729 mgmt_power_on(hdev, ret);
4732 /* Init failed, cleanup */
4733 flush_work(&hdev->tx_work);
4735 /* Since hci_rx_work() is possible to awake new cmd_work
4736 * it should be flushed first to avoid unexpected call of
4739 flush_work(&hdev->rx_work);
4740 flush_work(&hdev->cmd_work);
4742 skb_queue_purge(&hdev->cmd_q);
4743 skb_queue_purge(&hdev->rx_q);
4748 if (hdev->sent_cmd) {
4749 cancel_delayed_work_sync(&hdev->cmd_timer);
4750 kfree_skb(hdev->sent_cmd);
4751 hdev->sent_cmd = NULL;
4754 clear_bit(HCI_RUNNING, &hdev->flags);
4755 hci_sock_dev_event(hdev, HCI_DEV_CLOSE);
4758 hdev->flags &= BIT(HCI_RAW);
4765 /* This function requires the caller holds hdev->lock */
4766 static void hci_pend_le_actions_clear(struct hci_dev *hdev)
4768 struct hci_conn_params *p;
4770 list_for_each_entry(p, &hdev->le_conn_params, list) {
4772 hci_conn_drop(p->conn);
4773 hci_conn_put(p->conn);
4776 list_del_init(&p->action);
4779 BT_DBG("All LE pending actions cleared");
4782 static int hci_dev_shutdown(struct hci_dev *hdev)
4785 /* Similar to how we first do setup and then set the exclusive access
4786 * bit for userspace, we must first unset userchannel and then clean up.
4787 * Otherwise, the kernel can't properly use the hci channel to clean up
4788 * the controller (some shutdown routines require sending additional
4789 * commands to the controller for example).
4791 bool was_userchannel =
4792 hci_dev_test_and_clear_flag(hdev, HCI_USER_CHANNEL);
4794 if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) &&
4795 test_bit(HCI_UP, &hdev->flags)) {
4796 /* Execute vendor specific shutdown routine */
4798 err = hdev->shutdown(hdev);
4801 if (was_userchannel)
4802 hci_dev_set_flag(hdev, HCI_USER_CHANNEL);
4807 int hci_dev_close_sync(struct hci_dev *hdev)
4812 bt_dev_dbg(hdev, "");
4814 cancel_delayed_work(&hdev->power_off);
4815 cancel_delayed_work(&hdev->ncmd_timer);
4816 cancel_delayed_work(&hdev->le_scan_disable);
4817 cancel_delayed_work(&hdev->le_scan_restart);
4819 hci_request_cancel_all(hdev);
4821 if (hdev->adv_instance_timeout) {
4822 cancel_delayed_work_sync(&hdev->adv_instance_expire);
4823 hdev->adv_instance_timeout = 0;
4826 err = hci_dev_shutdown(hdev);
4828 if (!test_and_clear_bit(HCI_UP, &hdev->flags)) {
4829 cancel_delayed_work_sync(&hdev->cmd_timer);
4833 hci_leds_update_powered(hdev, false);
4835 /* Flush RX and TX works */
4836 flush_work(&hdev->tx_work);
4837 flush_work(&hdev->rx_work);
4839 if (hdev->discov_timeout > 0) {
4840 hdev->discov_timeout = 0;
4841 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
4842 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
4845 if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE))
4846 cancel_delayed_work(&hdev->service_cache);
4848 if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4849 struct adv_info *adv_instance;
4851 cancel_delayed_work_sync(&hdev->rpa_expired);
4853 list_for_each_entry(adv_instance, &hdev->adv_instances, list)
4854 cancel_delayed_work_sync(&adv_instance->rpa_expired_cb);
4857 /* Avoid potential lockdep warnings from the *_flush() calls by
4858 * ensuring the workqueue is empty up front.
4860 drain_workqueue(hdev->workqueue);
4864 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4866 auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF);
4868 if (!auto_off && hdev->dev_type == HCI_PRIMARY &&
4869 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4870 hci_dev_test_flag(hdev, HCI_MGMT))
4871 __mgmt_power_off(hdev);
4873 hci_inquiry_cache_flush(hdev);
4874 hci_pend_le_actions_clear(hdev);
4875 hci_conn_hash_flush(hdev);
4876 /* Prevent data races on hdev->smp_data or hdev->smp_bredr_data */
4877 smp_unregister(hdev);
4878 hci_dev_unlock(hdev);
4880 hci_sock_dev_event(hdev, HCI_DEV_DOWN);
4882 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
4883 aosp_do_close(hdev);
4884 msft_do_close(hdev);
4891 skb_queue_purge(&hdev->cmd_q);
4892 atomic_set(&hdev->cmd_cnt, 1);
4893 if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) &&
4894 !auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
4895 set_bit(HCI_INIT, &hdev->flags);
4896 hci_reset_sync(hdev);
4897 clear_bit(HCI_INIT, &hdev->flags);
4900 /* flush cmd work */
4901 flush_work(&hdev->cmd_work);
4904 skb_queue_purge(&hdev->rx_q);
4905 skb_queue_purge(&hdev->cmd_q);
4906 skb_queue_purge(&hdev->raw_q);
4908 /* Drop last sent command */
4909 if (hdev->sent_cmd) {
4910 cancel_delayed_work_sync(&hdev->cmd_timer);
4911 kfree_skb(hdev->sent_cmd);
4912 hdev->sent_cmd = NULL;
4915 clear_bit(HCI_RUNNING, &hdev->flags);
4916 hci_sock_dev_event(hdev, HCI_DEV_CLOSE);
4918 /* After this point our queues are empty and no tasks are scheduled. */
4922 hdev->flags &= BIT(HCI_RAW);
4923 hci_dev_clear_volatile_flags(hdev);
4925 /* Controller radio is available but is currently powered down */
4926 hdev->amp_status = AMP_STATUS_POWERED_DOWN;
4928 memset(hdev->eir, 0, sizeof(hdev->eir));
4929 memset(hdev->dev_class, 0, sizeof(hdev->dev_class));
4930 bacpy(&hdev->random_addr, BDADDR_ANY);
4936 /* This function perform power on HCI command sequence as follows:
4938 * If controller is already up (HCI_UP) performs hci_powered_update_sync
4939 * sequence otherwise run hci_dev_open_sync which will follow with
4940 * hci_powered_update_sync after the init sequence is completed.
4942 static int hci_power_on_sync(struct hci_dev *hdev)
4946 if (test_bit(HCI_UP, &hdev->flags) &&
4947 hci_dev_test_flag(hdev, HCI_MGMT) &&
4948 hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) {
4949 cancel_delayed_work(&hdev->power_off);
4950 return hci_powered_update_sync(hdev);
4953 err = hci_dev_open_sync(hdev);
4957 /* During the HCI setup phase, a few error conditions are
4958 * ignored and they need to be checked now. If they are still
4959 * valid, it is important to return the device back off.
4961 if (hci_dev_test_flag(hdev, HCI_RFKILLED) ||
4962 hci_dev_test_flag(hdev, HCI_UNCONFIGURED) ||
4963 (hdev->dev_type == HCI_PRIMARY &&
4964 !bacmp(&hdev->bdaddr, BDADDR_ANY) &&
4965 !bacmp(&hdev->static_addr, BDADDR_ANY))) {
4966 hci_dev_clear_flag(hdev, HCI_AUTO_OFF);
4967 hci_dev_close_sync(hdev);
4968 } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) {
4969 queue_delayed_work(hdev->req_workqueue, &hdev->power_off,
4970 HCI_AUTO_OFF_TIMEOUT);
4973 if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) {
4974 /* For unconfigured devices, set the HCI_RAW flag
4975 * so that userspace can easily identify them.
4977 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
4978 set_bit(HCI_RAW, &hdev->flags);
4980 /* For fully configured devices, this will send
4981 * the Index Added event. For unconfigured devices,
4982 * it will send Unconfigued Index Added event.
4984 * Devices with HCI_QUIRK_RAW_DEVICE are ignored
4985 * and no event will be send.
4987 mgmt_index_added(hdev);
4988 } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) {
4989 /* When the controller is now configured, then it
4990 * is important to clear the HCI_RAW flag.
4992 if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
4993 clear_bit(HCI_RAW, &hdev->flags);
4995 /* Powering on the controller with HCI_CONFIG set only
4996 * happens with the transition from unconfigured to
4997 * configured. This will send the Index Added event.
4999 mgmt_index_added(hdev);
5005 static int hci_remote_name_cancel_sync(struct hci_dev *hdev, bdaddr_t *addr)
5007 struct hci_cp_remote_name_req_cancel cp;
5009 memset(&cp, 0, sizeof(cp));
5010 bacpy(&cp.bdaddr, addr);
5012 return __hci_cmd_sync_status(hdev, HCI_OP_REMOTE_NAME_REQ_CANCEL,
5013 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5016 int hci_stop_discovery_sync(struct hci_dev *hdev)
5018 struct discovery_state *d = &hdev->discovery;
5019 struct inquiry_entry *e;
5022 bt_dev_dbg(hdev, "state %u", hdev->discovery.state);
5024 if (d->state == DISCOVERY_FINDING || d->state == DISCOVERY_STOPPING) {
5025 if (test_bit(HCI_INQUIRY, &hdev->flags)) {
5026 err = __hci_cmd_sync_status(hdev, HCI_OP_INQUIRY_CANCEL,
5027 0, NULL, HCI_CMD_TIMEOUT);
5032 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
5033 cancel_delayed_work(&hdev->le_scan_disable);
5034 cancel_delayed_work(&hdev->le_scan_restart);
5036 err = hci_scan_disable_sync(hdev);
5042 err = hci_scan_disable_sync(hdev);
5047 /* Resume advertising if it was paused */
5048 if (use_ll_privacy(hdev))
5049 hci_resume_advertising_sync(hdev);
5051 /* No further actions needed for LE-only discovery */
5052 if (d->type == DISCOV_TYPE_LE)
5055 if (d->state == DISCOVERY_RESOLVING || d->state == DISCOVERY_STOPPING) {
5056 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY,
5061 return hci_remote_name_cancel_sync(hdev, &e->data.bdaddr);
5067 static int hci_disconnect_phy_link_sync(struct hci_dev *hdev, u16 handle,
5070 struct hci_cp_disconn_phy_link cp;
5072 memset(&cp, 0, sizeof(cp));
5073 cp.phy_handle = HCI_PHY_HANDLE(handle);
5076 return __hci_cmd_sync_status(hdev, HCI_OP_DISCONN_PHY_LINK,
5077 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5080 static int hci_disconnect_sync(struct hci_dev *hdev, struct hci_conn *conn,
5083 struct hci_cp_disconnect cp;
5085 if (conn->type == AMP_LINK)
5086 return hci_disconnect_phy_link_sync(hdev, conn->handle, reason);
5088 memset(&cp, 0, sizeof(cp));
5089 cp.handle = cpu_to_le16(conn->handle);
5092 /* Wait for HCI_EV_DISCONN_COMPLETE not HCI_EV_CMD_STATUS when not
5095 if (!hdev->suspended)
5096 return __hci_cmd_sync_status_sk(hdev, HCI_OP_DISCONNECT,
5098 HCI_EV_DISCONN_COMPLETE,
5099 HCI_CMD_TIMEOUT, NULL);
5101 return __hci_cmd_sync_status(hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp,
5105 static int hci_le_connect_cancel_sync(struct hci_dev *hdev,
5106 struct hci_conn *conn)
5108 if (test_bit(HCI_CONN_SCANNING, &conn->flags))
5111 return __hci_cmd_sync_status(hdev, HCI_OP_LE_CREATE_CONN_CANCEL,
5112 6, &conn->dst, HCI_CMD_TIMEOUT);
5115 static int hci_connect_cancel_sync(struct hci_dev *hdev, struct hci_conn *conn)
5117 if (conn->type == LE_LINK)
5118 return hci_le_connect_cancel_sync(hdev, conn);
5120 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
5123 return __hci_cmd_sync_status(hdev, HCI_OP_CREATE_CONN_CANCEL,
5124 6, &conn->dst, HCI_CMD_TIMEOUT);
5127 static int hci_reject_sco_sync(struct hci_dev *hdev, struct hci_conn *conn,
5130 struct hci_cp_reject_sync_conn_req cp;
5132 memset(&cp, 0, sizeof(cp));
5133 bacpy(&cp.bdaddr, &conn->dst);
5136 /* SCO rejection has its own limited set of
5137 * allowed error values (0x0D-0x0F).
5139 if (reason < 0x0d || reason > 0x0f)
5140 cp.reason = HCI_ERROR_REJ_LIMITED_RESOURCES;
5142 return __hci_cmd_sync_status(hdev, HCI_OP_REJECT_SYNC_CONN_REQ,
5143 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5146 static int hci_reject_conn_sync(struct hci_dev *hdev, struct hci_conn *conn,
5149 struct hci_cp_reject_conn_req cp;
5151 if (conn->type == SCO_LINK || conn->type == ESCO_LINK)
5152 return hci_reject_sco_sync(hdev, conn, reason);
5154 memset(&cp, 0, sizeof(cp));
5155 bacpy(&cp.bdaddr, &conn->dst);
5158 return __hci_cmd_sync_status(hdev, HCI_OP_REJECT_CONN_REQ,
5159 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5162 int hci_abort_conn_sync(struct hci_dev *hdev, struct hci_conn *conn, u8 reason)
5166 switch (conn->state) {
5169 return hci_disconnect_sync(hdev, conn, reason);
5171 err = hci_connect_cancel_sync(hdev, conn);
5172 /* Cleanup hci_conn object if it cannot be cancelled as it
5173 * likelly means the controller and host stack are out of sync.
5177 hci_conn_failed(conn, err);
5178 hci_dev_unlock(hdev);
5182 return hci_reject_conn_sync(hdev, conn, reason);
5184 conn->state = BT_CLOSED;
5191 static int hci_disconnect_all_sync(struct hci_dev *hdev, u8 reason)
5193 struct hci_conn *conn, *tmp;
5196 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
5197 err = hci_abort_conn_sync(hdev, conn, reason);
5205 /* This function perform power off HCI command sequence as follows:
5209 * Disconnect all connections
5210 * hci_dev_close_sync
5212 static int hci_power_off_sync(struct hci_dev *hdev)
5216 /* If controller is already down there is nothing to do */
5217 if (!test_bit(HCI_UP, &hdev->flags))
5220 if (test_bit(HCI_ISCAN, &hdev->flags) ||
5221 test_bit(HCI_PSCAN, &hdev->flags)) {
5222 err = hci_write_scan_enable_sync(hdev, 0x00);
5227 err = hci_clear_adv_sync(hdev, NULL, false);
5231 err = hci_stop_discovery_sync(hdev);
5235 /* Terminated due to Power Off */
5236 err = hci_disconnect_all_sync(hdev, HCI_ERROR_REMOTE_POWER_OFF);
5240 return hci_dev_close_sync(hdev);
5243 int hci_set_powered_sync(struct hci_dev *hdev, u8 val)
5246 return hci_power_on_sync(hdev);
5248 return hci_power_off_sync(hdev);
5251 static int hci_write_iac_sync(struct hci_dev *hdev)
5253 struct hci_cp_write_current_iac_lap cp;
5255 if (!hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
5258 memset(&cp, 0, sizeof(cp));
5260 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) {
5261 /* Limited discoverable mode */
5262 cp.num_iac = min_t(u8, hdev->num_iac, 2);
5263 cp.iac_lap[0] = 0x00; /* LIAC */
5264 cp.iac_lap[1] = 0x8b;
5265 cp.iac_lap[2] = 0x9e;
5266 cp.iac_lap[3] = 0x33; /* GIAC */
5267 cp.iac_lap[4] = 0x8b;
5268 cp.iac_lap[5] = 0x9e;
5270 /* General discoverable mode */
5272 cp.iac_lap[0] = 0x33; /* GIAC */
5273 cp.iac_lap[1] = 0x8b;
5274 cp.iac_lap[2] = 0x9e;
5277 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CURRENT_IAC_LAP,
5278 (cp.num_iac * 3) + 1, &cp,
5282 int hci_update_discoverable_sync(struct hci_dev *hdev)
5286 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
5287 err = hci_write_iac_sync(hdev);
5291 err = hci_update_scan_sync(hdev);
5295 err = hci_update_class_sync(hdev);
5300 /* Advertising instances don't use the global discoverable setting, so
5301 * only update AD if advertising was enabled using Set Advertising.
5303 if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) {
5304 err = hci_update_adv_data_sync(hdev, 0x00);
5308 /* Discoverable mode affects the local advertising
5309 * address in limited privacy mode.
5311 if (hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY)) {
5312 if (ext_adv_capable(hdev))
5313 err = hci_start_ext_adv_sync(hdev, 0x00);
5315 err = hci_enable_advertising_sync(hdev);
5322 static int update_discoverable_sync(struct hci_dev *hdev, void *data)
5324 return hci_update_discoverable_sync(hdev);
5327 int hci_update_discoverable(struct hci_dev *hdev)
5329 /* Only queue if it would have any effect */
5330 if (hdev_is_powered(hdev) &&
5331 hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
5332 hci_dev_test_flag(hdev, HCI_DISCOVERABLE) &&
5333 hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY))
5334 return hci_cmd_sync_queue(hdev, update_discoverable_sync, NULL,
5340 int hci_update_connectable_sync(struct hci_dev *hdev)
5344 err = hci_update_scan_sync(hdev);
5348 /* If BR/EDR is not enabled and we disable advertising as a
5349 * by-product of disabling connectable, we need to update the
5350 * advertising flags.
5352 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
5353 err = hci_update_adv_data_sync(hdev, hdev->cur_adv_instance);
5355 /* Update the advertising parameters if necessary */
5356 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
5357 !list_empty(&hdev->adv_instances)) {
5358 if (ext_adv_capable(hdev))
5359 err = hci_start_ext_adv_sync(hdev,
5360 hdev->cur_adv_instance);
5362 err = hci_enable_advertising_sync(hdev);
5368 return hci_update_passive_scan_sync(hdev);
5371 static int hci_inquiry_sync(struct hci_dev *hdev, u8 length)
5373 const u8 giac[3] = { 0x33, 0x8b, 0x9e };
5374 const u8 liac[3] = { 0x00, 0x8b, 0x9e };
5375 struct hci_cp_inquiry cp;
5377 bt_dev_dbg(hdev, "");
5379 if (hci_dev_test_flag(hdev, HCI_INQUIRY))
5383 hci_inquiry_cache_flush(hdev);
5384 hci_dev_unlock(hdev);
5386 memset(&cp, 0, sizeof(cp));
5388 if (hdev->discovery.limited)
5389 memcpy(&cp.lap, liac, sizeof(cp.lap));
5391 memcpy(&cp.lap, giac, sizeof(cp.lap));
5395 return __hci_cmd_sync_status(hdev, HCI_OP_INQUIRY,
5396 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5399 static int hci_active_scan_sync(struct hci_dev *hdev, uint16_t interval)
5402 /* Accept list is not used for discovery */
5403 u8 filter_policy = 0x00;
5404 /* Default is to enable duplicates filter */
5405 u8 filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
5408 bt_dev_dbg(hdev, "");
5410 /* If controller is scanning, it means the passive scanning is
5411 * running. Thus, we should temporarily stop it in order to set the
5412 * discovery scanning parameters.
5414 err = hci_scan_disable_sync(hdev);
5416 bt_dev_err(hdev, "Unable to disable scanning: %d", err);
5420 cancel_interleave_scan(hdev);
5422 /* Pause address resolution for active scan and stop advertising if
5423 * privacy is enabled.
5425 err = hci_pause_addr_resolution(hdev);
5429 /* All active scans will be done with either a resolvable private
5430 * address (when privacy feature has been enabled) or non-resolvable
5433 err = hci_update_random_address_sync(hdev, true, scan_use_rpa(hdev),
5436 own_addr_type = ADDR_LE_DEV_PUBLIC;
5438 if (hci_is_adv_monitoring(hdev)) {
5439 /* Duplicate filter should be disabled when some advertisement
5440 * monitor is activated, otherwise AdvMon can only receive one
5441 * advertisement for one peer(*) during active scanning, and
5442 * might report loss to these peers.
5444 * Note that different controllers have different meanings of
5445 * |duplicate|. Some of them consider packets with the same
5446 * address as duplicate, and others consider packets with the
5447 * same address and the same RSSI as duplicate. Although in the
5448 * latter case we don't need to disable duplicate filter, but
5449 * it is common to have active scanning for a short period of
5450 * time, the power impact should be neglectable.
5452 filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
5455 err = hci_start_scan_sync(hdev, LE_SCAN_ACTIVE, interval,
5456 hdev->le_scan_window_discovery,
5457 own_addr_type, filter_policy, filter_dup);
5462 /* Resume advertising if it was paused */
5463 if (use_ll_privacy(hdev))
5464 hci_resume_advertising_sync(hdev);
5466 /* Resume passive scanning */
5467 hci_update_passive_scan_sync(hdev);
5471 static int hci_start_interleaved_discovery_sync(struct hci_dev *hdev)
5475 bt_dev_dbg(hdev, "");
5477 err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery * 2);
5481 return hci_inquiry_sync(hdev, DISCOV_BREDR_INQUIRY_LEN);
5484 int hci_start_discovery_sync(struct hci_dev *hdev)
5486 unsigned long timeout;
5489 bt_dev_dbg(hdev, "type %u", hdev->discovery.type);
5491 switch (hdev->discovery.type) {
5492 case DISCOV_TYPE_BREDR:
5493 return hci_inquiry_sync(hdev, DISCOV_BREDR_INQUIRY_LEN);
5494 case DISCOV_TYPE_INTERLEAVED:
5495 /* When running simultaneous discovery, the LE scanning time
5496 * should occupy the whole discovery time sine BR/EDR inquiry
5497 * and LE scanning are scheduled by the controller.
5499 * For interleaving discovery in comparison, BR/EDR inquiry
5500 * and LE scanning are done sequentially with separate
5503 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY,
5505 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
5506 /* During simultaneous discovery, we double LE scan
5507 * interval. We must leave some time for the controller
5508 * to do BR/EDR inquiry.
5510 err = hci_start_interleaved_discovery_sync(hdev);
5514 timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout);
5515 err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery);
5517 case DISCOV_TYPE_LE:
5518 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
5519 err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery);
5528 bt_dev_dbg(hdev, "timeout %u ms", jiffies_to_msecs(timeout));
5530 /* When service discovery is used and the controller has a
5531 * strict duplicate filter, it is important to remember the
5532 * start and duration of the scan. This is required for
5533 * restarting scanning during the discovery phase.
5535 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) &&
5536 hdev->discovery.result_filtering) {
5537 hdev->discovery.scan_start = jiffies;
5538 hdev->discovery.scan_duration = timeout;
5541 queue_delayed_work(hdev->req_workqueue, &hdev->le_scan_disable,
5546 static void hci_suspend_monitor_sync(struct hci_dev *hdev)
5548 switch (hci_get_adv_monitor_offload_ext(hdev)) {
5549 case HCI_ADV_MONITOR_EXT_MSFT:
5550 msft_suspend_sync(hdev);
5557 /* This function disables discovery and mark it as paused */
5558 static int hci_pause_discovery_sync(struct hci_dev *hdev)
5560 int old_state = hdev->discovery.state;
5563 /* If discovery already stopped/stopping/paused there nothing to do */
5564 if (old_state == DISCOVERY_STOPPED || old_state == DISCOVERY_STOPPING ||
5565 hdev->discovery_paused)
5568 hci_discovery_set_state(hdev, DISCOVERY_STOPPING);
5569 err = hci_stop_discovery_sync(hdev);
5573 hdev->discovery_paused = true;
5574 hdev->discovery_old_state = old_state;
5575 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
5580 static int hci_update_event_filter_sync(struct hci_dev *hdev)
5582 struct bdaddr_list_with_flags *b;
5583 u8 scan = SCAN_DISABLED;
5584 bool scanning = test_bit(HCI_PSCAN, &hdev->flags);
5587 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
5590 /* Some fake CSR controllers lock up after setting this type of
5591 * filter, so avoid sending the request altogether.
5593 if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks))
5596 /* Always clear event filter when starting */
5597 hci_clear_event_filter_sync(hdev);
5599 list_for_each_entry(b, &hdev->accept_list, list) {
5600 if (!(b->flags & HCI_CONN_FLAG_REMOTE_WAKEUP))
5603 bt_dev_dbg(hdev, "Adding event filters for %pMR", &b->bdaddr);
5605 err = hci_set_event_filter_sync(hdev, HCI_FLT_CONN_SETUP,
5606 HCI_CONN_SETUP_ALLOW_BDADDR,
5608 HCI_CONN_SETUP_AUTO_ON);
5610 bt_dev_dbg(hdev, "Failed to set event filter for %pMR",
5616 if (scan && !scanning)
5617 hci_write_scan_enable_sync(hdev, scan);
5618 else if (!scan && scanning)
5619 hci_write_scan_enable_sync(hdev, scan);
5624 /* This function disables scan (BR and LE) and mark it as paused */
5625 static int hci_pause_scan_sync(struct hci_dev *hdev)
5627 if (hdev->scanning_paused)
5630 /* Disable page scan if enabled */
5631 if (test_bit(HCI_PSCAN, &hdev->flags))
5632 hci_write_scan_enable_sync(hdev, SCAN_DISABLED);
5634 hci_scan_disable_sync(hdev);
5636 hdev->scanning_paused = true;
5641 /* This function performs the HCI suspend procedures in the follow order:
5643 * Pause discovery (active scanning/inquiry)
5644 * Pause Directed Advertising/Advertising
5645 * Pause Scanning (passive scanning in case discovery was not active)
5646 * Disconnect all connections
5647 * Set suspend_status to BT_SUSPEND_DISCONNECT if hdev cannot wakeup
5649 * Update event mask (only set events that are allowed to wake up the host)
5650 * Update event filter (with devices marked with HCI_CONN_FLAG_REMOTE_WAKEUP)
5651 * Update passive scanning (lower duty cycle)
5652 * Set suspend_status to BT_SUSPEND_CONFIGURE_WAKE
5654 int hci_suspend_sync(struct hci_dev *hdev)
5658 /* If marked as suspended there nothing to do */
5659 if (hdev->suspended)
5662 /* Mark device as suspended */
5663 hdev->suspended = true;
5665 /* Pause discovery if not already stopped */
5666 hci_pause_discovery_sync(hdev);
5668 /* Pause other advertisements */
5669 hci_pause_advertising_sync(hdev);
5671 /* Suspend monitor filters */
5672 hci_suspend_monitor_sync(hdev);
5674 /* Prevent disconnects from causing scanning to be re-enabled */
5675 hci_pause_scan_sync(hdev);
5677 if (hci_conn_count(hdev)) {
5678 /* Soft disconnect everything (power off) */
5679 err = hci_disconnect_all_sync(hdev, HCI_ERROR_REMOTE_POWER_OFF);
5681 /* Set state to BT_RUNNING so resume doesn't notify */
5682 hdev->suspend_state = BT_RUNNING;
5683 hci_resume_sync(hdev);
5687 /* Update event mask so only the allowed event can wakeup the
5690 hci_set_event_mask_sync(hdev);
5693 /* Only configure accept list if disconnect succeeded and wake
5694 * isn't being prevented.
5696 if (!hdev->wakeup || !hdev->wakeup(hdev)) {
5697 hdev->suspend_state = BT_SUSPEND_DISCONNECT;
5701 /* Unpause to take care of updating scanning params */
5702 hdev->scanning_paused = false;
5704 /* Enable event filter for paired devices */
5705 hci_update_event_filter_sync(hdev);
5707 /* Update LE passive scan if enabled */
5708 hci_update_passive_scan_sync(hdev);
5710 /* Pause scan changes again. */
5711 hdev->scanning_paused = true;
5713 hdev->suspend_state = BT_SUSPEND_CONFIGURE_WAKE;
5718 /* This function resumes discovery */
5719 static int hci_resume_discovery_sync(struct hci_dev *hdev)
5723 /* If discovery not paused there nothing to do */
5724 if (!hdev->discovery_paused)
5727 hdev->discovery_paused = false;
5729 hci_discovery_set_state(hdev, DISCOVERY_STARTING);
5731 err = hci_start_discovery_sync(hdev);
5733 hci_discovery_set_state(hdev, err ? DISCOVERY_STOPPED :
5739 static void hci_resume_monitor_sync(struct hci_dev *hdev)
5741 switch (hci_get_adv_monitor_offload_ext(hdev)) {
5742 case HCI_ADV_MONITOR_EXT_MSFT:
5743 msft_resume_sync(hdev);
5750 /* This function resume scan and reset paused flag */
5751 static int hci_resume_scan_sync(struct hci_dev *hdev)
5753 if (!hdev->scanning_paused)
5756 hdev->scanning_paused = false;
5758 hci_update_scan_sync(hdev);
5760 /* Reset passive scanning to normal */
5761 hci_update_passive_scan_sync(hdev);
5766 /* This function performs the HCI suspend procedures in the follow order:
5768 * Restore event mask
5769 * Clear event filter
5770 * Update passive scanning (normal duty cycle)
5771 * Resume Directed Advertising/Advertising
5772 * Resume discovery (active scanning/inquiry)
5774 int hci_resume_sync(struct hci_dev *hdev)
5776 /* If not marked as suspended there nothing to do */
5777 if (!hdev->suspended)
5780 hdev->suspended = false;
5782 /* Restore event mask */
5783 hci_set_event_mask_sync(hdev);
5785 /* Clear any event filters and restore scan state */
5786 hci_clear_event_filter_sync(hdev);
5788 /* Resume scanning */
5789 hci_resume_scan_sync(hdev);
5791 /* Resume monitor filters */
5792 hci_resume_monitor_sync(hdev);
5794 /* Resume other advertisements */
5795 hci_resume_advertising_sync(hdev);
5797 /* Resume discovery */
5798 hci_resume_discovery_sync(hdev);
5803 static bool conn_use_rpa(struct hci_conn *conn)
5805 struct hci_dev *hdev = conn->hdev;
5807 return hci_dev_test_flag(hdev, HCI_PRIVACY);
5810 static int hci_le_ext_directed_advertising_sync(struct hci_dev *hdev,
5811 struct hci_conn *conn)
5813 struct hci_cp_le_set_ext_adv_params cp;
5815 bdaddr_t random_addr;
5818 err = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn),
5823 /* Set require_privacy to false so that the remote device has a
5824 * chance of identifying us.
5826 err = hci_get_random_address(hdev, false, conn_use_rpa(conn), NULL,
5827 &own_addr_type, &random_addr);
5831 memset(&cp, 0, sizeof(cp));
5833 cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_DIRECT_IND);
5834 cp.own_addr_type = own_addr_type;
5835 cp.channel_map = hdev->le_adv_channel_map;
5836 cp.tx_power = HCI_TX_POWER_INVALID;
5837 cp.primary_phy = HCI_ADV_PHY_1M;
5838 cp.secondary_phy = HCI_ADV_PHY_1M;
5839 cp.handle = 0x00; /* Use instance 0 for directed adv */
5840 cp.own_addr_type = own_addr_type;
5841 cp.peer_addr_type = conn->dst_type;
5842 bacpy(&cp.peer_addr, &conn->dst);
5844 /* As per Core Spec 5.2 Vol 2, PART E, Sec 7.8.53, for
5845 * advertising_event_property LE_LEGACY_ADV_DIRECT_IND
5846 * does not supports advertising data when the advertising set already
5847 * contains some, the controller shall return erroc code 'Invalid
5848 * HCI Command Parameters(0x12).
5849 * So it is required to remove adv set for handle 0x00. since we use
5850 * instance 0 for directed adv.
5852 err = hci_remove_ext_adv_instance_sync(hdev, cp.handle, NULL);
5856 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS,
5857 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5861 /* Check if random address need to be updated */
5862 if (own_addr_type == ADDR_LE_DEV_RANDOM &&
5863 bacmp(&random_addr, BDADDR_ANY) &&
5864 bacmp(&random_addr, &hdev->random_addr)) {
5865 err = hci_set_adv_set_random_addr_sync(hdev, 0x00,
5871 return hci_enable_ext_advertising_sync(hdev, 0x00);
5874 static int hci_le_directed_advertising_sync(struct hci_dev *hdev,
5875 struct hci_conn *conn)
5877 struct hci_cp_le_set_adv_param cp;
5882 if (ext_adv_capable(hdev))
5883 return hci_le_ext_directed_advertising_sync(hdev, conn);
5885 /* Clear the HCI_LE_ADV bit temporarily so that the
5886 * hci_update_random_address knows that it's safe to go ahead
5887 * and write a new random address. The flag will be set back on
5888 * as soon as the SET_ADV_ENABLE HCI command completes.
5890 hci_dev_clear_flag(hdev, HCI_LE_ADV);
5892 /* Set require_privacy to false so that the remote device has a
5893 * chance of identifying us.
5895 status = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn),
5900 memset(&cp, 0, sizeof(cp));
5902 /* Some controllers might reject command if intervals are not
5903 * within range for undirected advertising.
5904 * BCM20702A0 is known to be affected by this.
5906 cp.min_interval = cpu_to_le16(0x0020);
5907 cp.max_interval = cpu_to_le16(0x0020);
5909 cp.type = LE_ADV_DIRECT_IND;
5910 cp.own_address_type = own_addr_type;
5911 cp.direct_addr_type = conn->dst_type;
5912 bacpy(&cp.direct_addr, &conn->dst);
5913 cp.channel_map = hdev->le_adv_channel_map;
5915 status = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_PARAM,
5916 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5922 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
5923 sizeof(enable), &enable, HCI_CMD_TIMEOUT);
5926 static void set_ext_conn_params(struct hci_conn *conn,
5927 struct hci_cp_le_ext_conn_param *p)
5929 struct hci_dev *hdev = conn->hdev;
5931 memset(p, 0, sizeof(*p));
5933 p->scan_interval = cpu_to_le16(hdev->le_scan_int_connect);
5934 p->scan_window = cpu_to_le16(hdev->le_scan_window_connect);
5935 p->conn_interval_min = cpu_to_le16(conn->le_conn_min_interval);
5936 p->conn_interval_max = cpu_to_le16(conn->le_conn_max_interval);
5937 p->conn_latency = cpu_to_le16(conn->le_conn_latency);
5938 p->supervision_timeout = cpu_to_le16(conn->le_supv_timeout);
5939 p->min_ce_len = cpu_to_le16(0x0000);
5940 p->max_ce_len = cpu_to_le16(0x0000);
5943 static int hci_le_ext_create_conn_sync(struct hci_dev *hdev,
5944 struct hci_conn *conn, u8 own_addr_type)
5946 struct hci_cp_le_ext_create_conn *cp;
5947 struct hci_cp_le_ext_conn_param *p;
5948 u8 data[sizeof(*cp) + sizeof(*p) * 3];
5952 p = (void *)cp->data;
5954 memset(cp, 0, sizeof(*cp));
5956 bacpy(&cp->peer_addr, &conn->dst);
5957 cp->peer_addr_type = conn->dst_type;
5958 cp->own_addr_type = own_addr_type;
5962 if (scan_1m(hdev)) {
5963 cp->phys |= LE_SCAN_PHY_1M;
5964 set_ext_conn_params(conn, p);
5970 if (scan_2m(hdev)) {
5971 cp->phys |= LE_SCAN_PHY_2M;
5972 set_ext_conn_params(conn, p);
5978 if (scan_coded(hdev)) {
5979 cp->phys |= LE_SCAN_PHY_CODED;
5980 set_ext_conn_params(conn, p);
5985 return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_EXT_CREATE_CONN,
5987 HCI_EV_LE_ENHANCED_CONN_COMPLETE,
5988 conn->conn_timeout, NULL);
5991 int hci_le_create_conn_sync(struct hci_dev *hdev, struct hci_conn *conn)
5993 struct hci_cp_le_create_conn cp;
5994 struct hci_conn_params *params;
5998 /* If requested to connect as peripheral use directed advertising */
5999 if (conn->role == HCI_ROLE_SLAVE) {
6000 /* If we're active scanning and simultaneous roles is not
6001 * enabled simply reject the attempt.
6003 if (hci_dev_test_flag(hdev, HCI_LE_SCAN) &&
6004 hdev->le_scan_type == LE_SCAN_ACTIVE &&
6005 !hci_dev_test_flag(hdev, HCI_LE_SIMULTANEOUS_ROLES)) {
6010 /* Pause advertising while doing directed advertising. */
6011 hci_pause_advertising_sync(hdev);
6013 err = hci_le_directed_advertising_sync(hdev, conn);
6017 /* Disable advertising if simultaneous roles is not in use. */
6018 if (!hci_dev_test_flag(hdev, HCI_LE_SIMULTANEOUS_ROLES))
6019 hci_pause_advertising_sync(hdev);
6021 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
6023 conn->le_conn_min_interval = params->conn_min_interval;
6024 conn->le_conn_max_interval = params->conn_max_interval;
6025 conn->le_conn_latency = params->conn_latency;
6026 conn->le_supv_timeout = params->supervision_timeout;
6028 conn->le_conn_min_interval = hdev->le_conn_min_interval;
6029 conn->le_conn_max_interval = hdev->le_conn_max_interval;
6030 conn->le_conn_latency = hdev->le_conn_latency;
6031 conn->le_supv_timeout = hdev->le_supv_timeout;
6034 /* If controller is scanning, we stop it since some controllers are
6035 * not able to scan and connect at the same time. Also set the
6036 * HCI_LE_SCAN_INTERRUPTED flag so that the command complete
6037 * handler for scan disabling knows to set the correct discovery
6040 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
6041 hci_scan_disable_sync(hdev);
6042 hci_dev_set_flag(hdev, HCI_LE_SCAN_INTERRUPTED);
6045 /* Update random address, but set require_privacy to false so
6046 * that we never connect with an non-resolvable address.
6048 err = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn),
6053 if (use_ext_conn(hdev)) {
6054 err = hci_le_ext_create_conn_sync(hdev, conn, own_addr_type);
6058 memset(&cp, 0, sizeof(cp));
6060 cp.scan_interval = cpu_to_le16(hdev->le_scan_int_connect);
6061 cp.scan_window = cpu_to_le16(hdev->le_scan_window_connect);
6063 bacpy(&cp.peer_addr, &conn->dst);
6064 cp.peer_addr_type = conn->dst_type;
6065 cp.own_address_type = own_addr_type;
6066 cp.conn_interval_min = cpu_to_le16(conn->le_conn_min_interval);
6067 cp.conn_interval_max = cpu_to_le16(conn->le_conn_max_interval);
6068 cp.conn_latency = cpu_to_le16(conn->le_conn_latency);
6069 cp.supervision_timeout = cpu_to_le16(conn->le_supv_timeout);
6070 cp.min_ce_len = cpu_to_le16(0x0000);
6071 cp.max_ce_len = cpu_to_le16(0x0000);
6073 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2261:
6075 * If this event is unmasked and the HCI_LE_Connection_Complete event
6076 * is unmasked, only the HCI_LE_Enhanced_Connection_Complete event is
6077 * sent when a new connection has been created.
6079 err = __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_CREATE_CONN,
6081 use_enhanced_conn_complete(hdev) ?
6082 HCI_EV_LE_ENHANCED_CONN_COMPLETE :
6083 HCI_EV_LE_CONN_COMPLETE,
6084 conn->conn_timeout, NULL);
6087 /* Re-enable advertising after the connection attempt is finished. */
6088 hci_resume_advertising_sync(hdev);
6092 int hci_le_remove_cig_sync(struct hci_dev *hdev, u8 handle)
6094 struct hci_cp_le_remove_cig cp;
6096 memset(&cp, 0, sizeof(cp));
6099 return __hci_cmd_sync_status(hdev, HCI_OP_LE_REMOVE_CIG, sizeof(cp),
6100 &cp, HCI_CMD_TIMEOUT);
6103 int hci_le_big_terminate_sync(struct hci_dev *hdev, u8 handle)
6105 struct hci_cp_le_big_term_sync cp;
6107 memset(&cp, 0, sizeof(cp));
6110 return __hci_cmd_sync_status(hdev, HCI_OP_LE_BIG_TERM_SYNC,
6111 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
6114 int hci_le_pa_terminate_sync(struct hci_dev *hdev, u16 handle)
6116 struct hci_cp_le_pa_term_sync cp;
6118 memset(&cp, 0, sizeof(cp));
6119 cp.handle = cpu_to_le16(handle);
6121 return __hci_cmd_sync_status(hdev, HCI_OP_LE_PA_TERM_SYNC,
6122 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
6125 int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
6126 bool use_rpa, struct adv_info *adv_instance,
6127 u8 *own_addr_type, bdaddr_t *rand_addr)
6131 bacpy(rand_addr, BDADDR_ANY);
6133 /* If privacy is enabled use a resolvable private address. If
6134 * current RPA has expired then generate a new one.
6137 /* If Controller supports LL Privacy use own address type is
6140 if (use_ll_privacy(hdev))
6141 *own_addr_type = ADDR_LE_DEV_RANDOM_RESOLVED;
6143 *own_addr_type = ADDR_LE_DEV_RANDOM;
6146 if (adv_rpa_valid(adv_instance))
6149 if (rpa_valid(hdev))
6153 err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa);
6155 bt_dev_err(hdev, "failed to generate new RPA");
6159 bacpy(rand_addr, &hdev->rpa);
6164 /* In case of required privacy without resolvable private address,
6165 * use an non-resolvable private address. This is useful for
6166 * non-connectable advertising.
6168 if (require_privacy) {
6172 /* The non-resolvable private address is generated
6173 * from random six bytes with the two most significant
6176 get_random_bytes(&nrpa, 6);
6179 /* The non-resolvable private address shall not be
6180 * equal to the public address.
6182 if (bacmp(&hdev->bdaddr, &nrpa))
6186 *own_addr_type = ADDR_LE_DEV_RANDOM;
6187 bacpy(rand_addr, &nrpa);
6192 /* No privacy so use a public address. */
6193 *own_addr_type = ADDR_LE_DEV_PUBLIC;
6198 static int _update_adv_data_sync(struct hci_dev *hdev, void *data)
6200 u8 instance = PTR_ERR(data);
6202 return hci_update_adv_data_sync(hdev, instance);
6205 int hci_update_adv_data(struct hci_dev *hdev, u8 instance)
6207 return hci_cmd_sync_queue(hdev, _update_adv_data_sync,
6208 ERR_PTR(instance), NULL);