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);
250 bt_dev_err(hdev, "Opcode 0x%4x failed: %ld", opcode,
255 /* If command return a status event skb will be set to NULL as there are
256 * no parameters, in case of failure IS_ERR(skb) would have be set to
257 * the actual error would be found with PTR_ERR(skb).
262 status = skb->data[0];
268 EXPORT_SYMBOL(__hci_cmd_sync_status_sk);
270 int __hci_cmd_sync_status(struct hci_dev *hdev, u16 opcode, u32 plen,
271 const void *param, u32 timeout)
273 return __hci_cmd_sync_status_sk(hdev, opcode, plen, param, 0, timeout,
276 EXPORT_SYMBOL(__hci_cmd_sync_status);
278 static void hci_cmd_sync_work(struct work_struct *work)
280 struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_sync_work);
282 bt_dev_dbg(hdev, "");
284 /* Dequeue all entries and run them */
286 struct hci_cmd_sync_work_entry *entry;
288 mutex_lock(&hdev->cmd_sync_work_lock);
289 entry = list_first_entry_or_null(&hdev->cmd_sync_work_list,
290 struct hci_cmd_sync_work_entry,
293 list_del(&entry->list);
294 mutex_unlock(&hdev->cmd_sync_work_lock);
299 bt_dev_dbg(hdev, "entry %p", entry);
304 hci_req_sync_lock(hdev);
305 err = entry->func(hdev, entry->data);
307 entry->destroy(hdev, entry->data, err);
308 hci_req_sync_unlock(hdev);
315 static void hci_cmd_sync_cancel_work(struct work_struct *work)
317 struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_sync_cancel_work);
319 cancel_delayed_work_sync(&hdev->cmd_timer);
320 cancel_delayed_work_sync(&hdev->ncmd_timer);
321 atomic_set(&hdev->cmd_cnt, 1);
323 wake_up_interruptible(&hdev->req_wait_q);
326 static int hci_scan_disable_sync(struct hci_dev *hdev);
327 static int scan_disable_sync(struct hci_dev *hdev, void *data)
329 return hci_scan_disable_sync(hdev);
332 static int hci_inquiry_sync(struct hci_dev *hdev, u8 length);
333 static int interleaved_inquiry_sync(struct hci_dev *hdev, void *data)
335 return hci_inquiry_sync(hdev, DISCOV_INTERLEAVED_INQUIRY_LEN);
338 static void le_scan_disable(struct work_struct *work)
340 struct hci_dev *hdev = container_of(work, struct hci_dev,
341 le_scan_disable.work);
344 bt_dev_dbg(hdev, "");
347 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
350 cancel_delayed_work(&hdev->le_scan_restart);
352 status = hci_cmd_sync_queue(hdev, scan_disable_sync, NULL, NULL);
354 bt_dev_err(hdev, "failed to disable LE scan: %d", status);
358 hdev->discovery.scan_start = 0;
360 /* If we were running LE only scan, change discovery state. If
361 * we were running both LE and BR/EDR inquiry simultaneously,
362 * and BR/EDR inquiry is already finished, stop discovery,
363 * otherwise BR/EDR inquiry will stop discovery when finished.
364 * If we will resolve remote device name, do not change
368 if (hdev->discovery.type == DISCOV_TYPE_LE)
371 if (hdev->discovery.type != DISCOV_TYPE_INTERLEAVED)
374 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) {
375 if (!test_bit(HCI_INQUIRY, &hdev->flags) &&
376 hdev->discovery.state != DISCOVERY_RESOLVING)
382 status = hci_cmd_sync_queue(hdev, interleaved_inquiry_sync, NULL, NULL);
384 bt_dev_err(hdev, "inquiry failed: status %d", status);
391 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
394 hci_dev_unlock(hdev);
397 static int hci_le_set_scan_enable_sync(struct hci_dev *hdev, u8 val,
399 static int hci_le_scan_restart_sync(struct hci_dev *hdev)
401 /* If controller is not scanning we are done. */
402 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
405 if (hdev->scanning_paused) {
406 bt_dev_dbg(hdev, "Scanning is paused for suspend");
410 hci_le_set_scan_enable_sync(hdev, LE_SCAN_DISABLE, 0x00);
411 return hci_le_set_scan_enable_sync(hdev, LE_SCAN_ENABLE,
412 LE_SCAN_FILTER_DUP_ENABLE);
415 static int le_scan_restart_sync(struct hci_dev *hdev, void *data)
417 return hci_le_scan_restart_sync(hdev);
420 static void le_scan_restart(struct work_struct *work)
422 struct hci_dev *hdev = container_of(work, struct hci_dev,
423 le_scan_restart.work);
424 unsigned long timeout, duration, scan_start, now;
427 bt_dev_dbg(hdev, "");
431 status = hci_cmd_sync_queue(hdev, le_scan_restart_sync, NULL, NULL);
433 bt_dev_err(hdev, "failed to restart LE scan: status %d",
438 if (!test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) ||
439 !hdev->discovery.scan_start)
442 /* When the scan was started, hdev->le_scan_disable has been queued
443 * after duration from scan_start. During scan restart this job
444 * has been canceled, and we need to queue it again after proper
445 * timeout, to make sure that scan does not run indefinitely.
447 duration = hdev->discovery.scan_duration;
448 scan_start = hdev->discovery.scan_start;
450 if (now - scan_start <= duration) {
453 if (now >= scan_start)
454 elapsed = now - scan_start;
456 elapsed = ULONG_MAX - scan_start + now;
458 timeout = duration - elapsed;
463 queue_delayed_work(hdev->req_workqueue,
464 &hdev->le_scan_disable, timeout);
467 hci_dev_unlock(hdev);
470 static int reenable_adv_sync(struct hci_dev *hdev, void *data)
472 bt_dev_dbg(hdev, "");
474 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
475 list_empty(&hdev->adv_instances))
478 if (hdev->cur_adv_instance) {
479 return hci_schedule_adv_instance_sync(hdev,
480 hdev->cur_adv_instance,
483 if (ext_adv_capable(hdev)) {
484 hci_start_ext_adv_sync(hdev, 0x00);
486 hci_update_adv_data_sync(hdev, 0x00);
487 hci_update_scan_rsp_data_sync(hdev, 0x00);
488 hci_enable_advertising_sync(hdev);
495 static void reenable_adv(struct work_struct *work)
497 struct hci_dev *hdev = container_of(work, struct hci_dev,
501 bt_dev_dbg(hdev, "");
505 status = hci_cmd_sync_queue(hdev, reenable_adv_sync, NULL, NULL);
507 bt_dev_err(hdev, "failed to reenable ADV: %d", status);
509 hci_dev_unlock(hdev);
512 static void cancel_adv_timeout(struct hci_dev *hdev)
514 if (hdev->adv_instance_timeout) {
515 hdev->adv_instance_timeout = 0;
516 cancel_delayed_work(&hdev->adv_instance_expire);
520 /* For a single instance:
521 * - force == true: The instance will be removed even when its remaining
522 * lifetime is not zero.
523 * - force == false: the instance will be deactivated but kept stored unless
524 * the remaining lifetime is zero.
526 * For instance == 0x00:
527 * - force == true: All instances will be removed regardless of their timeout
529 * - force == false: Only instances that have a timeout will be removed.
531 int hci_clear_adv_instance_sync(struct hci_dev *hdev, struct sock *sk,
532 u8 instance, bool force)
534 struct adv_info *adv_instance, *n, *next_instance = NULL;
538 /* Cancel any timeout concerning the removed instance(s). */
539 if (!instance || hdev->cur_adv_instance == instance)
540 cancel_adv_timeout(hdev);
542 /* Get the next instance to advertise BEFORE we remove
543 * the current one. This can be the same instance again
544 * if there is only one instance.
546 if (instance && hdev->cur_adv_instance == instance)
547 next_instance = hci_get_next_instance(hdev, instance);
549 if (instance == 0x00) {
550 list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances,
552 if (!(force || adv_instance->timeout))
555 rem_inst = adv_instance->instance;
556 err = hci_remove_adv_instance(hdev, rem_inst);
558 mgmt_advertising_removed(sk, hdev, rem_inst);
561 adv_instance = hci_find_adv_instance(hdev, instance);
563 if (force || (adv_instance && adv_instance->timeout &&
564 !adv_instance->remaining_time)) {
565 /* Don't advertise a removed instance. */
567 next_instance->instance == instance)
568 next_instance = NULL;
570 err = hci_remove_adv_instance(hdev, instance);
572 mgmt_advertising_removed(sk, hdev, instance);
576 if (!hdev_is_powered(hdev) || hci_dev_test_flag(hdev, HCI_ADVERTISING))
579 if (next_instance && !ext_adv_capable(hdev))
580 return hci_schedule_adv_instance_sync(hdev,
581 next_instance->instance,
587 static int adv_timeout_expire_sync(struct hci_dev *hdev, void *data)
589 u8 instance = *(u8 *)data;
593 hci_clear_adv_instance_sync(hdev, NULL, instance, false);
595 if (list_empty(&hdev->adv_instances))
596 return hci_disable_advertising_sync(hdev);
601 static void adv_timeout_expire(struct work_struct *work)
604 struct hci_dev *hdev = container_of(work, struct hci_dev,
605 adv_instance_expire.work);
607 bt_dev_dbg(hdev, "");
611 hdev->adv_instance_timeout = 0;
613 if (hdev->cur_adv_instance == 0x00)
616 inst_ptr = kmalloc(1, GFP_KERNEL);
620 *inst_ptr = hdev->cur_adv_instance;
621 hci_cmd_sync_queue(hdev, adv_timeout_expire_sync, inst_ptr, NULL);
624 hci_dev_unlock(hdev);
627 void hci_cmd_sync_init(struct hci_dev *hdev)
629 INIT_WORK(&hdev->cmd_sync_work, hci_cmd_sync_work);
630 INIT_LIST_HEAD(&hdev->cmd_sync_work_list);
631 mutex_init(&hdev->cmd_sync_work_lock);
632 mutex_init(&hdev->unregister_lock);
634 INIT_WORK(&hdev->cmd_sync_cancel_work, hci_cmd_sync_cancel_work);
635 INIT_WORK(&hdev->reenable_adv_work, reenable_adv);
636 INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable);
637 INIT_DELAYED_WORK(&hdev->le_scan_restart, le_scan_restart);
638 INIT_DELAYED_WORK(&hdev->adv_instance_expire, adv_timeout_expire);
641 void hci_cmd_sync_clear(struct hci_dev *hdev)
643 struct hci_cmd_sync_work_entry *entry, *tmp;
645 cancel_work_sync(&hdev->cmd_sync_work);
646 cancel_work_sync(&hdev->reenable_adv_work);
648 mutex_lock(&hdev->cmd_sync_work_lock);
649 list_for_each_entry_safe(entry, tmp, &hdev->cmd_sync_work_list, list) {
651 entry->destroy(hdev, entry->data, -ECANCELED);
653 list_del(&entry->list);
656 mutex_unlock(&hdev->cmd_sync_work_lock);
659 void __hci_cmd_sync_cancel(struct hci_dev *hdev, int err)
661 bt_dev_dbg(hdev, "err 0x%2.2x", err);
663 if (hdev->req_status == HCI_REQ_PEND) {
664 hdev->req_result = err;
665 hdev->req_status = HCI_REQ_CANCELED;
667 cancel_delayed_work_sync(&hdev->cmd_timer);
668 cancel_delayed_work_sync(&hdev->ncmd_timer);
669 atomic_set(&hdev->cmd_cnt, 1);
671 wake_up_interruptible(&hdev->req_wait_q);
675 void hci_cmd_sync_cancel(struct hci_dev *hdev, int err)
677 bt_dev_dbg(hdev, "err 0x%2.2x", err);
679 if (hdev->req_status == HCI_REQ_PEND) {
680 hdev->req_result = err;
681 hdev->req_status = HCI_REQ_CANCELED;
683 queue_work(hdev->workqueue, &hdev->cmd_sync_cancel_work);
686 EXPORT_SYMBOL(hci_cmd_sync_cancel);
688 /* Submit HCI command to be run in as cmd_sync_work:
690 * - hdev must _not_ be unregistered
692 int hci_cmd_sync_submit(struct hci_dev *hdev, hci_cmd_sync_work_func_t func,
693 void *data, hci_cmd_sync_work_destroy_t destroy)
695 struct hci_cmd_sync_work_entry *entry;
698 mutex_lock(&hdev->unregister_lock);
699 if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) {
704 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
711 entry->destroy = destroy;
713 mutex_lock(&hdev->cmd_sync_work_lock);
714 list_add_tail(&entry->list, &hdev->cmd_sync_work_list);
715 mutex_unlock(&hdev->cmd_sync_work_lock);
717 queue_work(hdev->req_workqueue, &hdev->cmd_sync_work);
720 mutex_unlock(&hdev->unregister_lock);
723 EXPORT_SYMBOL(hci_cmd_sync_submit);
725 /* Queue HCI command:
727 * - hdev must be running
729 int hci_cmd_sync_queue(struct hci_dev *hdev, hci_cmd_sync_work_func_t func,
730 void *data, hci_cmd_sync_work_destroy_t destroy)
732 /* Only queue command if hdev is running which means it had been opened
733 * and is either on init phase or is already up.
735 if (!test_bit(HCI_RUNNING, &hdev->flags))
738 return hci_cmd_sync_submit(hdev, func, data, destroy);
740 EXPORT_SYMBOL(hci_cmd_sync_queue);
742 int hci_update_eir_sync(struct hci_dev *hdev)
744 struct hci_cp_write_eir cp;
746 bt_dev_dbg(hdev, "");
748 if (!hdev_is_powered(hdev))
751 if (!lmp_ext_inq_capable(hdev))
754 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
757 if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
760 memset(&cp, 0, sizeof(cp));
762 eir_create(hdev, cp.data);
764 if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0)
767 memcpy(hdev->eir, cp.data, sizeof(cp.data));
769 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp,
773 static u8 get_service_classes(struct hci_dev *hdev)
775 struct bt_uuid *uuid;
778 list_for_each_entry(uuid, &hdev->uuids, list)
779 val |= uuid->svc_hint;
784 int hci_update_class_sync(struct hci_dev *hdev)
788 bt_dev_dbg(hdev, "");
790 if (!hdev_is_powered(hdev))
793 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
796 if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
799 cod[0] = hdev->minor_class;
800 cod[1] = hdev->major_class;
801 cod[2] = get_service_classes(hdev);
803 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
806 if (memcmp(cod, hdev->dev_class, 3) == 0)
809 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CLASS_OF_DEV,
810 sizeof(cod), cod, HCI_CMD_TIMEOUT);
813 static bool is_advertising_allowed(struct hci_dev *hdev, bool connectable)
815 /* If there is no connection we are OK to advertise. */
816 if (hci_conn_num(hdev, LE_LINK) == 0)
819 /* Check le_states if there is any connection in peripheral role. */
820 if (hdev->conn_hash.le_num_peripheral > 0) {
821 /* Peripheral connection state and non connectable mode
824 if (!connectable && !(hdev->le_states[2] & 0x10))
827 /* Peripheral connection state and connectable mode bit 38
828 * and scannable bit 21.
830 if (connectable && (!(hdev->le_states[4] & 0x40) ||
831 !(hdev->le_states[2] & 0x20)))
835 /* Check le_states if there is any connection in central role. */
836 if (hci_conn_num(hdev, LE_LINK) != hdev->conn_hash.le_num_peripheral) {
837 /* Central connection state and non connectable mode bit 18. */
838 if (!connectable && !(hdev->le_states[2] & 0x02))
841 /* Central connection state and connectable mode bit 35 and
844 if (connectable && (!(hdev->le_states[4] & 0x08) ||
845 !(hdev->le_states[2] & 0x08)))
852 static bool adv_use_rpa(struct hci_dev *hdev, uint32_t flags)
854 /* If privacy is not enabled don't use RPA */
855 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
858 /* If basic privacy mode is enabled use RPA */
859 if (!hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY))
862 /* If limited privacy mode is enabled don't use RPA if we're
863 * both discoverable and bondable.
865 if ((flags & MGMT_ADV_FLAG_DISCOV) &&
866 hci_dev_test_flag(hdev, HCI_BONDABLE))
869 /* We're neither bondable nor discoverable in the limited
870 * privacy mode, therefore use RPA.
875 static int hci_set_random_addr_sync(struct hci_dev *hdev, bdaddr_t *rpa)
877 /* If we're advertising or initiating an LE connection we can't
878 * go ahead and change the random address at this time. This is
879 * because the eventual initiator address used for the
880 * subsequently created connection will be undefined (some
881 * controllers use the new address and others the one we had
882 * when the operation started).
884 * In this kind of scenario skip the update and let the random
885 * address be updated at the next cycle.
887 if (hci_dev_test_flag(hdev, HCI_LE_ADV) ||
888 hci_lookup_le_connect(hdev)) {
889 bt_dev_dbg(hdev, "Deferring random address update");
890 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
894 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_RANDOM_ADDR,
895 6, rpa, HCI_CMD_TIMEOUT);
898 int hci_update_random_address_sync(struct hci_dev *hdev, bool require_privacy,
899 bool rpa, u8 *own_addr_type)
903 /* If privacy is enabled use a resolvable private address. If
904 * current RPA has expired or there is something else than
905 * the current RPA in use, then generate a new one.
908 /* If Controller supports LL Privacy use own address type is
911 if (use_ll_privacy(hdev))
912 *own_addr_type = ADDR_LE_DEV_RANDOM_RESOLVED;
914 *own_addr_type = ADDR_LE_DEV_RANDOM;
916 /* Check if RPA is valid */
920 err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa);
922 bt_dev_err(hdev, "failed to generate new RPA");
926 err = hci_set_random_addr_sync(hdev, &hdev->rpa);
933 /* In case of required privacy without resolvable private address,
934 * use an non-resolvable private address. This is useful for active
935 * scanning and non-connectable advertising.
937 if (require_privacy) {
941 /* The non-resolvable private address is generated
942 * from random six bytes with the two most significant
945 get_random_bytes(&nrpa, 6);
948 /* The non-resolvable private address shall not be
949 * equal to the public address.
951 if (bacmp(&hdev->bdaddr, &nrpa))
955 *own_addr_type = ADDR_LE_DEV_RANDOM;
957 return hci_set_random_addr_sync(hdev, &nrpa);
960 /* If forcing static address is in use or there is no public
961 * address use the static address as random address (but skip
962 * the HCI command if the current random address is already the
965 * In case BR/EDR has been disabled on a dual-mode controller
966 * and a static address has been configured, then use that
967 * address instead of the public BR/EDR address.
969 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
970 !bacmp(&hdev->bdaddr, BDADDR_ANY) ||
971 (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
972 bacmp(&hdev->static_addr, BDADDR_ANY))) {
973 *own_addr_type = ADDR_LE_DEV_RANDOM;
974 if (bacmp(&hdev->static_addr, &hdev->random_addr))
975 return hci_set_random_addr_sync(hdev,
980 /* Neither privacy nor static address is being used so use a
983 *own_addr_type = ADDR_LE_DEV_PUBLIC;
988 static int hci_disable_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance)
990 struct hci_cp_le_set_ext_adv_enable *cp;
991 struct hci_cp_ext_adv_set *set;
992 u8 data[sizeof(*cp) + sizeof(*set) * 1];
995 /* If request specifies an instance that doesn't exist, fail */
997 struct adv_info *adv;
999 adv = hci_find_adv_instance(hdev, instance);
1003 /* If not enabled there is nothing to do */
1008 memset(data, 0, sizeof(data));
1011 set = (void *)cp->data;
1013 /* Instance 0x00 indicates all advertising instances will be disabled */
1014 cp->num_of_sets = !!instance;
1017 set->handle = instance;
1019 size = sizeof(*cp) + sizeof(*set) * cp->num_of_sets;
1021 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE,
1022 size, data, HCI_CMD_TIMEOUT);
1025 static int hci_set_adv_set_random_addr_sync(struct hci_dev *hdev, u8 instance,
1026 bdaddr_t *random_addr)
1028 struct hci_cp_le_set_adv_set_rand_addr cp;
1032 /* Instance 0x00 doesn't have an adv_info, instead it uses
1033 * hdev->random_addr to track its address so whenever it needs
1034 * to be updated this also set the random address since
1035 * hdev->random_addr is shared with scan state machine.
1037 err = hci_set_random_addr_sync(hdev, random_addr);
1042 memset(&cp, 0, sizeof(cp));
1044 cp.handle = instance;
1045 bacpy(&cp.bdaddr, random_addr);
1047 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
1048 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1051 int hci_setup_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance)
1053 struct hci_cp_le_set_ext_adv_params cp;
1056 bdaddr_t random_addr;
1059 struct adv_info *adv;
1063 adv = hci_find_adv_instance(hdev, instance);
1070 /* Updating parameters of an active instance will return a
1071 * Command Disallowed error, so we must first disable the
1072 * instance if it is active.
1074 if (adv && !adv->pending) {
1075 err = hci_disable_ext_adv_instance_sync(hdev, instance);
1080 flags = hci_adv_instance_flags(hdev, instance);
1082 /* If the "connectable" instance flag was not set, then choose between
1083 * ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
1085 connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
1086 mgmt_get_connectable(hdev);
1088 if (!is_advertising_allowed(hdev, connectable))
1091 /* Set require_privacy to true only when non-connectable
1092 * advertising is used. In that case it is fine to use a
1093 * non-resolvable private address.
1095 err = hci_get_random_address(hdev, !connectable,
1096 adv_use_rpa(hdev, flags), adv,
1097 &own_addr_type, &random_addr);
1101 memset(&cp, 0, sizeof(cp));
1104 hci_cpu_to_le24(adv->min_interval, cp.min_interval);
1105 hci_cpu_to_le24(adv->max_interval, cp.max_interval);
1106 cp.tx_power = adv->tx_power;
1108 hci_cpu_to_le24(hdev->le_adv_min_interval, cp.min_interval);
1109 hci_cpu_to_le24(hdev->le_adv_max_interval, cp.max_interval);
1110 cp.tx_power = HCI_ADV_TX_POWER_NO_PREFERENCE;
1113 secondary_adv = (flags & MGMT_ADV_FLAG_SEC_MASK);
1117 cp.evt_properties = cpu_to_le16(LE_EXT_ADV_CONN_IND);
1119 cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_IND);
1120 } else if (hci_adv_instance_is_scannable(hdev, instance) ||
1121 (flags & MGMT_ADV_PARAM_SCAN_RSP)) {
1123 cp.evt_properties = cpu_to_le16(LE_EXT_ADV_SCAN_IND);
1125 cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_SCAN_IND);
1128 cp.evt_properties = cpu_to_le16(LE_EXT_ADV_NON_CONN_IND);
1130 cp.evt_properties = cpu_to_le16(LE_LEGACY_NONCONN_IND);
1133 /* If Own_Address_Type equals 0x02 or 0x03, the Peer_Address parameter
1134 * contains the peer’s Identity Address and the Peer_Address_Type
1135 * parameter contains the peer’s Identity Type (i.e., 0x00 or 0x01).
1136 * These parameters are used to locate the corresponding local IRK in
1137 * the resolving list; this IRK is used to generate their own address
1138 * used in the advertisement.
1140 if (own_addr_type == ADDR_LE_DEV_RANDOM_RESOLVED)
1141 hci_copy_identity_address(hdev, &cp.peer_addr,
1142 &cp.peer_addr_type);
1144 cp.own_addr_type = own_addr_type;
1145 cp.channel_map = hdev->le_adv_channel_map;
1146 cp.handle = instance;
1148 if (flags & MGMT_ADV_FLAG_SEC_2M) {
1149 cp.primary_phy = HCI_ADV_PHY_1M;
1150 cp.secondary_phy = HCI_ADV_PHY_2M;
1151 } else if (flags & MGMT_ADV_FLAG_SEC_CODED) {
1152 cp.primary_phy = HCI_ADV_PHY_CODED;
1153 cp.secondary_phy = HCI_ADV_PHY_CODED;
1155 /* In all other cases use 1M */
1156 cp.primary_phy = HCI_ADV_PHY_1M;
1157 cp.secondary_phy = HCI_ADV_PHY_1M;
1160 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS,
1161 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1165 if ((own_addr_type == ADDR_LE_DEV_RANDOM ||
1166 own_addr_type == ADDR_LE_DEV_RANDOM_RESOLVED) &&
1167 bacmp(&random_addr, BDADDR_ANY)) {
1168 /* Check if random address need to be updated */
1170 if (!bacmp(&random_addr, &adv->random_addr))
1173 if (!bacmp(&random_addr, &hdev->random_addr))
1177 return hci_set_adv_set_random_addr_sync(hdev, instance,
1184 static int hci_set_ext_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
1187 struct hci_cp_le_set_ext_scan_rsp_data cp;
1188 u8 data[HCI_MAX_EXT_AD_LENGTH];
1191 struct adv_info *adv = NULL;
1194 memset(&pdu, 0, sizeof(pdu));
1197 adv = hci_find_adv_instance(hdev, instance);
1198 if (!adv || !adv->scan_rsp_changed)
1202 len = eir_create_scan_rsp(hdev, instance, pdu.data);
1204 pdu.cp.handle = instance;
1205 pdu.cp.length = len;
1206 pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
1207 pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
1209 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_RSP_DATA,
1210 sizeof(pdu.cp) + len, &pdu.cp,
1216 adv->scan_rsp_changed = false;
1218 memcpy(hdev->scan_rsp_data, pdu.data, len);
1219 hdev->scan_rsp_data_len = len;
1225 static int __hci_set_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
1227 struct hci_cp_le_set_scan_rsp_data cp;
1230 memset(&cp, 0, sizeof(cp));
1232 len = eir_create_scan_rsp(hdev, instance, cp.data);
1234 if (hdev->scan_rsp_data_len == len &&
1235 !memcmp(cp.data, hdev->scan_rsp_data, len))
1238 memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));
1239 hdev->scan_rsp_data_len = len;
1243 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_RSP_DATA,
1244 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1247 int hci_update_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
1249 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
1252 if (ext_adv_capable(hdev))
1253 return hci_set_ext_scan_rsp_data_sync(hdev, instance);
1255 return __hci_set_scan_rsp_data_sync(hdev, instance);
1258 int hci_enable_ext_advertising_sync(struct hci_dev *hdev, u8 instance)
1260 struct hci_cp_le_set_ext_adv_enable *cp;
1261 struct hci_cp_ext_adv_set *set;
1262 u8 data[sizeof(*cp) + sizeof(*set) * 1];
1263 struct adv_info *adv;
1266 adv = hci_find_adv_instance(hdev, instance);
1269 /* If already enabled there is nothing to do */
1277 set = (void *)cp->data;
1279 memset(cp, 0, sizeof(*cp));
1282 cp->num_of_sets = 0x01;
1284 memset(set, 0, sizeof(*set));
1286 set->handle = instance;
1288 /* Set duration per instance since controller is responsible for
1291 if (adv && adv->timeout) {
1292 u16 duration = adv->timeout * MSEC_PER_SEC;
1294 /* Time = N * 10 ms */
1295 set->duration = cpu_to_le16(duration / 10);
1298 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE,
1300 sizeof(*set) * cp->num_of_sets,
1301 data, HCI_CMD_TIMEOUT);
1304 int hci_start_ext_adv_sync(struct hci_dev *hdev, u8 instance)
1308 err = hci_setup_ext_adv_instance_sync(hdev, instance);
1312 err = hci_set_ext_scan_rsp_data_sync(hdev, instance);
1316 return hci_enable_ext_advertising_sync(hdev, instance);
1319 static int hci_disable_per_advertising_sync(struct hci_dev *hdev, u8 instance)
1321 struct hci_cp_le_set_per_adv_enable cp;
1323 /* If periodic advertising already disabled there is nothing to do. */
1324 if (!hci_dev_test_flag(hdev, HCI_LE_PER_ADV))
1327 memset(&cp, 0, sizeof(cp));
1330 cp.handle = instance;
1332 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE,
1333 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1336 static int hci_set_per_adv_params_sync(struct hci_dev *hdev, u8 instance,
1337 u16 min_interval, u16 max_interval)
1339 struct hci_cp_le_set_per_adv_params cp;
1341 memset(&cp, 0, sizeof(cp));
1344 min_interval = DISCOV_LE_PER_ADV_INT_MIN;
1347 max_interval = DISCOV_LE_PER_ADV_INT_MAX;
1349 cp.handle = instance;
1350 cp.min_interval = cpu_to_le16(min_interval);
1351 cp.max_interval = cpu_to_le16(max_interval);
1352 cp.periodic_properties = 0x0000;
1354 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS,
1355 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1358 static int hci_set_per_adv_data_sync(struct hci_dev *hdev, u8 instance)
1361 struct hci_cp_le_set_per_adv_data cp;
1362 u8 data[HCI_MAX_PER_AD_LENGTH];
1366 memset(&pdu, 0, sizeof(pdu));
1369 struct adv_info *adv = hci_find_adv_instance(hdev, instance);
1371 if (!adv || !adv->periodic)
1375 len = eir_create_per_adv_data(hdev, instance, pdu.data);
1377 pdu.cp.length = len;
1378 pdu.cp.handle = instance;
1379 pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
1381 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_DATA,
1382 sizeof(pdu.cp) + len, &pdu,
1386 static int hci_enable_per_advertising_sync(struct hci_dev *hdev, u8 instance)
1388 struct hci_cp_le_set_per_adv_enable cp;
1390 /* If periodic advertising already enabled there is nothing to do. */
1391 if (hci_dev_test_flag(hdev, HCI_LE_PER_ADV))
1394 memset(&cp, 0, sizeof(cp));
1397 cp.handle = instance;
1399 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE,
1400 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1403 /* Checks if periodic advertising data contains a Basic Announcement and if it
1404 * does generates a Broadcast ID and add Broadcast Announcement.
1406 static int hci_adv_bcast_annoucement(struct hci_dev *hdev, struct adv_info *adv)
1411 /* Skip if NULL adv as instance 0x00 is used for general purpose
1412 * advertising so it cannot used for the likes of Broadcast Announcement
1413 * as it can be overwritten at any point.
1418 /* Check if PA data doesn't contains a Basic Audio Announcement then
1419 * there is nothing to do.
1421 if (!eir_get_service_data(adv->per_adv_data, adv->per_adv_data_len,
1425 /* Check if advertising data already has a Broadcast Announcement since
1426 * the process may want to control the Broadcast ID directly and in that
1427 * case the kernel shall no interfere.
1429 if (eir_get_service_data(adv->adv_data, adv->adv_data_len, 0x1852,
1433 /* Generate Broadcast ID */
1434 get_random_bytes(bid, sizeof(bid));
1435 eir_append_service_data(ad, 0, 0x1852, bid, sizeof(bid));
1436 hci_set_adv_instance_data(hdev, adv->instance, sizeof(ad), ad, 0, NULL);
1438 return hci_update_adv_data_sync(hdev, adv->instance);
1441 int hci_start_per_adv_sync(struct hci_dev *hdev, u8 instance, u8 data_len,
1442 u8 *data, u32 flags, u16 min_interval,
1443 u16 max_interval, u16 sync_interval)
1445 struct adv_info *adv = NULL;
1449 hci_disable_per_advertising_sync(hdev, instance);
1452 adv = hci_find_adv_instance(hdev, instance);
1453 /* Create an instance if that could not be found */
1455 adv = hci_add_per_instance(hdev, instance, flags,
1460 return PTR_ERR(adv);
1465 /* Only start advertising if instance 0 or if a dedicated instance has
1468 if (!adv || added) {
1469 err = hci_start_ext_adv_sync(hdev, instance);
1473 err = hci_adv_bcast_annoucement(hdev, adv);
1478 err = hci_set_per_adv_params_sync(hdev, instance, min_interval,
1483 err = hci_set_per_adv_data_sync(hdev, instance);
1487 err = hci_enable_per_advertising_sync(hdev, instance);
1495 hci_remove_adv_instance(hdev, instance);
1500 static int hci_start_adv_sync(struct hci_dev *hdev, u8 instance)
1504 if (ext_adv_capable(hdev))
1505 return hci_start_ext_adv_sync(hdev, instance);
1507 err = hci_update_adv_data_sync(hdev, instance);
1511 err = hci_update_scan_rsp_data_sync(hdev, instance);
1515 return hci_enable_advertising_sync(hdev);
1518 int hci_enable_advertising_sync(struct hci_dev *hdev)
1520 struct adv_info *adv_instance;
1521 struct hci_cp_le_set_adv_param cp;
1522 u8 own_addr_type, enable = 0x01;
1524 u16 adv_min_interval, adv_max_interval;
1528 if (ext_adv_capable(hdev))
1529 return hci_enable_ext_advertising_sync(hdev,
1530 hdev->cur_adv_instance);
1532 flags = hci_adv_instance_flags(hdev, hdev->cur_adv_instance);
1533 adv_instance = hci_find_adv_instance(hdev, hdev->cur_adv_instance);
1535 /* If the "connectable" instance flag was not set, then choose between
1536 * ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
1538 connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
1539 mgmt_get_connectable(hdev);
1541 if (!is_advertising_allowed(hdev, connectable))
1544 status = hci_disable_advertising_sync(hdev);
1548 /* Clear the HCI_LE_ADV bit temporarily so that the
1549 * hci_update_random_address knows that it's safe to go ahead
1550 * and write a new random address. The flag will be set back on
1551 * as soon as the SET_ADV_ENABLE HCI command completes.
1553 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1555 /* Set require_privacy to true only when non-connectable
1556 * advertising is used. In that case it is fine to use a
1557 * non-resolvable private address.
1559 status = hci_update_random_address_sync(hdev, !connectable,
1560 adv_use_rpa(hdev, flags),
1565 memset(&cp, 0, sizeof(cp));
1568 adv_min_interval = adv_instance->min_interval;
1569 adv_max_interval = adv_instance->max_interval;
1571 adv_min_interval = hdev->le_adv_min_interval;
1572 adv_max_interval = hdev->le_adv_max_interval;
1576 cp.type = LE_ADV_IND;
1578 if (hci_adv_instance_is_scannable(hdev, hdev->cur_adv_instance))
1579 cp.type = LE_ADV_SCAN_IND;
1581 cp.type = LE_ADV_NONCONN_IND;
1583 if (!hci_dev_test_flag(hdev, HCI_DISCOVERABLE) ||
1584 hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) {
1585 adv_min_interval = DISCOV_LE_FAST_ADV_INT_MIN;
1586 adv_max_interval = DISCOV_LE_FAST_ADV_INT_MAX;
1590 cp.min_interval = cpu_to_le16(adv_min_interval);
1591 cp.max_interval = cpu_to_le16(adv_max_interval);
1592 cp.own_address_type = own_addr_type;
1593 cp.channel_map = hdev->le_adv_channel_map;
1595 status = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_PARAM,
1596 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1600 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
1601 sizeof(enable), &enable, HCI_CMD_TIMEOUT);
1604 static int enable_advertising_sync(struct hci_dev *hdev, void *data)
1606 return hci_enable_advertising_sync(hdev);
1609 int hci_enable_advertising(struct hci_dev *hdev)
1611 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
1612 list_empty(&hdev->adv_instances))
1615 return hci_cmd_sync_queue(hdev, enable_advertising_sync, NULL, NULL);
1618 int hci_remove_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance,
1623 if (!ext_adv_capable(hdev))
1626 err = hci_disable_ext_adv_instance_sync(hdev, instance);
1630 /* If request specifies an instance that doesn't exist, fail */
1631 if (instance > 0 && !hci_find_adv_instance(hdev, instance))
1634 return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_REMOVE_ADV_SET,
1635 sizeof(instance), &instance, 0,
1636 HCI_CMD_TIMEOUT, sk);
1639 static int remove_ext_adv_sync(struct hci_dev *hdev, void *data)
1641 struct adv_info *adv = data;
1645 instance = adv->instance;
1647 return hci_remove_ext_adv_instance_sync(hdev, instance, NULL);
1650 int hci_remove_ext_adv_instance(struct hci_dev *hdev, u8 instance)
1652 struct adv_info *adv = NULL;
1655 adv = hci_find_adv_instance(hdev, instance);
1660 return hci_cmd_sync_queue(hdev, remove_ext_adv_sync, adv, NULL);
1663 int hci_le_terminate_big_sync(struct hci_dev *hdev, u8 handle, u8 reason)
1665 struct hci_cp_le_term_big cp;
1667 memset(&cp, 0, sizeof(cp));
1671 return __hci_cmd_sync_status(hdev, HCI_OP_LE_TERM_BIG,
1672 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1675 static int hci_set_ext_adv_data_sync(struct hci_dev *hdev, u8 instance)
1678 struct hci_cp_le_set_ext_adv_data cp;
1679 u8 data[HCI_MAX_EXT_AD_LENGTH];
1682 struct adv_info *adv = NULL;
1685 memset(&pdu, 0, sizeof(pdu));
1688 adv = hci_find_adv_instance(hdev, instance);
1689 if (!adv || !adv->adv_data_changed)
1693 len = eir_create_adv_data(hdev, instance, pdu.data);
1695 pdu.cp.length = len;
1696 pdu.cp.handle = instance;
1697 pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
1698 pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
1700 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_DATA,
1701 sizeof(pdu.cp) + len, &pdu.cp,
1706 /* Update data if the command succeed */
1708 adv->adv_data_changed = false;
1710 memcpy(hdev->adv_data, pdu.data, len);
1711 hdev->adv_data_len = len;
1717 static int hci_set_adv_data_sync(struct hci_dev *hdev, u8 instance)
1719 struct hci_cp_le_set_adv_data cp;
1722 memset(&cp, 0, sizeof(cp));
1724 len = eir_create_adv_data(hdev, instance, cp.data);
1726 /* There's nothing to do if the data hasn't changed */
1727 if (hdev->adv_data_len == len &&
1728 memcmp(cp.data, hdev->adv_data, len) == 0)
1731 memcpy(hdev->adv_data, cp.data, sizeof(cp.data));
1732 hdev->adv_data_len = len;
1736 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_DATA,
1737 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1740 int hci_update_adv_data_sync(struct hci_dev *hdev, u8 instance)
1742 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
1745 if (ext_adv_capable(hdev))
1746 return hci_set_ext_adv_data_sync(hdev, instance);
1748 return hci_set_adv_data_sync(hdev, instance);
1751 int hci_schedule_adv_instance_sync(struct hci_dev *hdev, u8 instance,
1754 struct adv_info *adv = NULL;
1757 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) && !ext_adv_capable(hdev))
1760 if (hdev->adv_instance_timeout)
1763 adv = hci_find_adv_instance(hdev, instance);
1767 /* A zero timeout means unlimited advertising. As long as there is
1768 * only one instance, duration should be ignored. We still set a timeout
1769 * in case further instances are being added later on.
1771 * If the remaining lifetime of the instance is more than the duration
1772 * then the timeout corresponds to the duration, otherwise it will be
1773 * reduced to the remaining instance lifetime.
1775 if (adv->timeout == 0 || adv->duration <= adv->remaining_time)
1776 timeout = adv->duration;
1778 timeout = adv->remaining_time;
1780 /* The remaining time is being reduced unless the instance is being
1781 * advertised without time limit.
1784 adv->remaining_time = adv->remaining_time - timeout;
1786 /* Only use work for scheduling instances with legacy advertising */
1787 if (!ext_adv_capable(hdev)) {
1788 hdev->adv_instance_timeout = timeout;
1789 queue_delayed_work(hdev->req_workqueue,
1790 &hdev->adv_instance_expire,
1791 msecs_to_jiffies(timeout * 1000));
1794 /* If we're just re-scheduling the same instance again then do not
1795 * execute any HCI commands. This happens when a single instance is
1798 if (!force && hdev->cur_adv_instance == instance &&
1799 hci_dev_test_flag(hdev, HCI_LE_ADV))
1802 hdev->cur_adv_instance = instance;
1804 return hci_start_adv_sync(hdev, instance);
1807 static int hci_clear_adv_sets_sync(struct hci_dev *hdev, struct sock *sk)
1811 if (!ext_adv_capable(hdev))
1814 /* Disable instance 0x00 to disable all instances */
1815 err = hci_disable_ext_adv_instance_sync(hdev, 0x00);
1819 return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_CLEAR_ADV_SETS,
1820 0, NULL, 0, HCI_CMD_TIMEOUT, sk);
1823 static int hci_clear_adv_sync(struct hci_dev *hdev, struct sock *sk, bool force)
1825 struct adv_info *adv, *n;
1828 if (ext_adv_capable(hdev))
1829 /* Remove all existing sets */
1830 err = hci_clear_adv_sets_sync(hdev, sk);
1831 if (ext_adv_capable(hdev))
1834 /* This is safe as long as there is no command send while the lock is
1839 /* Cleanup non-ext instances */
1840 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1841 u8 instance = adv->instance;
1844 if (!(force || adv->timeout))
1847 err = hci_remove_adv_instance(hdev, instance);
1849 mgmt_advertising_removed(sk, hdev, instance);
1852 hci_dev_unlock(hdev);
1857 static int hci_remove_adv_sync(struct hci_dev *hdev, u8 instance,
1862 /* If we use extended advertising, instance has to be removed first. */
1863 if (ext_adv_capable(hdev))
1864 err = hci_remove_ext_adv_instance_sync(hdev, instance, sk);
1865 if (ext_adv_capable(hdev))
1868 /* This is safe as long as there is no command send while the lock is
1873 err = hci_remove_adv_instance(hdev, instance);
1875 mgmt_advertising_removed(sk, hdev, instance);
1877 hci_dev_unlock(hdev);
1882 /* For a single instance:
1883 * - force == true: The instance will be removed even when its remaining
1884 * lifetime is not zero.
1885 * - force == false: the instance will be deactivated but kept stored unless
1886 * the remaining lifetime is zero.
1888 * For instance == 0x00:
1889 * - force == true: All instances will be removed regardless of their timeout
1891 * - force == false: Only instances that have a timeout will be removed.
1893 int hci_remove_advertising_sync(struct hci_dev *hdev, struct sock *sk,
1894 u8 instance, bool force)
1896 struct adv_info *next = NULL;
1899 /* Cancel any timeout concerning the removed instance(s). */
1900 if (!instance || hdev->cur_adv_instance == instance)
1901 cancel_adv_timeout(hdev);
1903 /* Get the next instance to advertise BEFORE we remove
1904 * the current one. This can be the same instance again
1905 * if there is only one instance.
1907 if (hdev->cur_adv_instance == instance)
1908 next = hci_get_next_instance(hdev, instance);
1911 err = hci_clear_adv_sync(hdev, sk, force);
1915 struct adv_info *adv = hci_find_adv_instance(hdev, instance);
1917 if (force || (adv && adv->timeout && !adv->remaining_time)) {
1918 /* Don't advertise a removed instance. */
1919 if (next && next->instance == instance)
1922 err = hci_remove_adv_sync(hdev, instance, sk);
1928 if (!hdev_is_powered(hdev) || hci_dev_test_flag(hdev, HCI_ADVERTISING))
1931 if (next && !ext_adv_capable(hdev))
1932 hci_schedule_adv_instance_sync(hdev, next->instance, false);
1937 int hci_read_rssi_sync(struct hci_dev *hdev, __le16 handle)
1939 struct hci_cp_read_rssi cp;
1942 return __hci_cmd_sync_status(hdev, HCI_OP_READ_RSSI,
1943 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1946 int hci_read_clock_sync(struct hci_dev *hdev, struct hci_cp_read_clock *cp)
1948 return __hci_cmd_sync_status(hdev, HCI_OP_READ_CLOCK,
1949 sizeof(*cp), cp, HCI_CMD_TIMEOUT);
1952 int hci_read_tx_power_sync(struct hci_dev *hdev, __le16 handle, u8 type)
1954 struct hci_cp_read_tx_power cp;
1958 return __hci_cmd_sync_status(hdev, HCI_OP_READ_TX_POWER,
1959 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1962 int hci_disable_advertising_sync(struct hci_dev *hdev)
1967 /* If controller is not advertising we are done. */
1968 if (!hci_dev_test_flag(hdev, HCI_LE_ADV))
1971 if (ext_adv_capable(hdev))
1972 err = hci_disable_ext_adv_instance_sync(hdev, 0x00);
1973 if (ext_adv_capable(hdev))
1976 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
1977 sizeof(enable), &enable, HCI_CMD_TIMEOUT);
1980 static int hci_le_set_ext_scan_enable_sync(struct hci_dev *hdev, u8 val,
1983 struct hci_cp_le_set_ext_scan_enable cp;
1985 memset(&cp, 0, sizeof(cp));
1988 if (hci_dev_test_flag(hdev, HCI_MESH))
1989 cp.filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
1991 cp.filter_dup = filter_dup;
1993 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE,
1994 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1997 static int hci_le_set_scan_enable_sync(struct hci_dev *hdev, u8 val,
2000 struct hci_cp_le_set_scan_enable cp;
2002 if (use_ext_scan(hdev))
2003 return hci_le_set_ext_scan_enable_sync(hdev, val, filter_dup);
2005 memset(&cp, 0, sizeof(cp));
2008 if (val && hci_dev_test_flag(hdev, HCI_MESH))
2009 cp.filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
2011 cp.filter_dup = filter_dup;
2013 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_ENABLE,
2014 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2017 static int hci_le_set_addr_resolution_enable_sync(struct hci_dev *hdev, u8 val)
2019 if (!use_ll_privacy(hdev))
2022 /* If controller is not/already resolving we are done. */
2023 if (val == hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION))
2026 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
2027 sizeof(val), &val, HCI_CMD_TIMEOUT);
2030 static int hci_scan_disable_sync(struct hci_dev *hdev)
2034 /* If controller is not scanning we are done. */
2035 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
2038 if (hdev->scanning_paused) {
2039 bt_dev_dbg(hdev, "Scanning is paused for suspend");
2043 err = hci_le_set_scan_enable_sync(hdev, LE_SCAN_DISABLE, 0x00);
2045 bt_dev_err(hdev, "Unable to disable scanning: %d", err);
2052 static bool scan_use_rpa(struct hci_dev *hdev)
2054 return hci_dev_test_flag(hdev, HCI_PRIVACY);
2057 static void hci_start_interleave_scan(struct hci_dev *hdev)
2059 hdev->interleave_scan_state = INTERLEAVE_SCAN_NO_FILTER;
2060 queue_delayed_work(hdev->req_workqueue,
2061 &hdev->interleave_scan, 0);
2064 static bool is_interleave_scanning(struct hci_dev *hdev)
2066 return hdev->interleave_scan_state != INTERLEAVE_SCAN_NONE;
2069 static void cancel_interleave_scan(struct hci_dev *hdev)
2071 bt_dev_dbg(hdev, "cancelling interleave scan");
2073 cancel_delayed_work_sync(&hdev->interleave_scan);
2075 hdev->interleave_scan_state = INTERLEAVE_SCAN_NONE;
2078 /* Return true if interleave_scan wasn't started until exiting this function,
2079 * otherwise, return false
2081 static bool hci_update_interleaved_scan_sync(struct hci_dev *hdev)
2083 /* Do interleaved scan only if all of the following are true:
2084 * - There is at least one ADV monitor
2085 * - At least one pending LE connection or one device to be scanned for
2086 * - Monitor offloading is not supported
2087 * If so, we should alternate between allowlist scan and one without
2088 * any filters to save power.
2090 bool use_interleaving = hci_is_adv_monitoring(hdev) &&
2091 !(list_empty(&hdev->pend_le_conns) &&
2092 list_empty(&hdev->pend_le_reports)) &&
2093 hci_get_adv_monitor_offload_ext(hdev) ==
2094 HCI_ADV_MONITOR_EXT_NONE;
2095 bool is_interleaving = is_interleave_scanning(hdev);
2097 if (use_interleaving && !is_interleaving) {
2098 hci_start_interleave_scan(hdev);
2099 bt_dev_dbg(hdev, "starting interleave scan");
2103 if (!use_interleaving && is_interleaving)
2104 cancel_interleave_scan(hdev);
2109 /* Removes connection to resolve list if needed.*/
2110 static int hci_le_del_resolve_list_sync(struct hci_dev *hdev,
2111 bdaddr_t *bdaddr, u8 bdaddr_type)
2113 struct hci_cp_le_del_from_resolv_list cp;
2114 struct bdaddr_list_with_irk *entry;
2116 if (!use_ll_privacy(hdev))
2119 /* Check if the IRK has been programmed */
2120 entry = hci_bdaddr_list_lookup_with_irk(&hdev->le_resolv_list, bdaddr,
2125 cp.bdaddr_type = bdaddr_type;
2126 bacpy(&cp.bdaddr, bdaddr);
2128 return __hci_cmd_sync_status(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST,
2129 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2132 static int hci_le_del_accept_list_sync(struct hci_dev *hdev,
2133 bdaddr_t *bdaddr, u8 bdaddr_type)
2135 struct hci_cp_le_del_from_accept_list cp;
2138 /* Check if device is on accept list before removing it */
2139 if (!hci_bdaddr_list_lookup(&hdev->le_accept_list, bdaddr, bdaddr_type))
2142 cp.bdaddr_type = bdaddr_type;
2143 bacpy(&cp.bdaddr, bdaddr);
2145 /* Ignore errors when removing from resolving list as that is likely
2146 * that the device was never added.
2148 hci_le_del_resolve_list_sync(hdev, &cp.bdaddr, cp.bdaddr_type);
2150 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
2151 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2153 bt_dev_err(hdev, "Unable to remove from allow list: %d", err);
2157 bt_dev_dbg(hdev, "Remove %pMR (0x%x) from allow list", &cp.bdaddr,
2163 /* Adds connection to resolve list if needed.
2164 * Setting params to NULL programs local hdev->irk
2166 static int hci_le_add_resolve_list_sync(struct hci_dev *hdev,
2167 struct hci_conn_params *params)
2169 struct hci_cp_le_add_to_resolv_list cp;
2170 struct smp_irk *irk;
2171 struct bdaddr_list_with_irk *entry;
2173 if (!use_ll_privacy(hdev))
2176 /* Attempt to program local identity address, type and irk if params is
2180 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
2183 hci_copy_identity_address(hdev, &cp.bdaddr, &cp.bdaddr_type);
2184 memcpy(cp.peer_irk, hdev->irk, 16);
2188 irk = hci_find_irk_by_addr(hdev, ¶ms->addr, params->addr_type);
2192 /* Check if the IK has _not_ been programmed yet. */
2193 entry = hci_bdaddr_list_lookup_with_irk(&hdev->le_resolv_list,
2199 cp.bdaddr_type = params->addr_type;
2200 bacpy(&cp.bdaddr, ¶ms->addr);
2201 memcpy(cp.peer_irk, irk->val, 16);
2203 /* Default privacy mode is always Network */
2204 params->privacy_mode = HCI_NETWORK_PRIVACY;
2207 if (hci_dev_test_flag(hdev, HCI_PRIVACY))
2208 memcpy(cp.local_irk, hdev->irk, 16);
2210 memset(cp.local_irk, 0, 16);
2212 return __hci_cmd_sync_status(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST,
2213 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2216 /* Set Device Privacy Mode. */
2217 static int hci_le_set_privacy_mode_sync(struct hci_dev *hdev,
2218 struct hci_conn_params *params)
2220 struct hci_cp_le_set_privacy_mode cp;
2221 struct smp_irk *irk;
2223 /* If device privacy mode has already been set there is nothing to do */
2224 if (params->privacy_mode == HCI_DEVICE_PRIVACY)
2227 /* Check if HCI_CONN_FLAG_DEVICE_PRIVACY has been set as it also
2228 * indicates that LL Privacy has been enabled and
2229 * HCI_OP_LE_SET_PRIVACY_MODE is supported.
2231 if (!(params->flags & HCI_CONN_FLAG_DEVICE_PRIVACY))
2234 irk = hci_find_irk_by_addr(hdev, ¶ms->addr, params->addr_type);
2238 memset(&cp, 0, sizeof(cp));
2239 cp.bdaddr_type = irk->addr_type;
2240 bacpy(&cp.bdaddr, &irk->bdaddr);
2241 cp.mode = HCI_DEVICE_PRIVACY;
2243 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PRIVACY_MODE,
2244 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2247 /* Adds connection to allow list if needed, if the device uses RPA (has IRK)
2248 * this attempts to program the device in the resolving list as well and
2249 * properly set the privacy mode.
2251 static int hci_le_add_accept_list_sync(struct hci_dev *hdev,
2252 struct hci_conn_params *params,
2255 struct hci_cp_le_add_to_accept_list cp;
2258 /* During suspend, only wakeable devices can be in acceptlist */
2259 if (hdev->suspended &&
2260 !(params->flags & HCI_CONN_FLAG_REMOTE_WAKEUP))
2263 /* Select filter policy to accept all advertising */
2264 if (*num_entries >= hdev->le_accept_list_size)
2267 /* Accept list can not be used with RPAs */
2268 if (!use_ll_privacy(hdev) &&
2269 hci_find_irk_by_addr(hdev, ¶ms->addr, params->addr_type))
2272 /* Attempt to program the device in the resolving list first to avoid
2273 * having to rollback in case it fails since the resolving list is
2274 * dynamic it can probably be smaller than the accept list.
2276 err = hci_le_add_resolve_list_sync(hdev, params);
2278 bt_dev_err(hdev, "Unable to add to resolve list: %d", err);
2282 /* Set Privacy Mode */
2283 err = hci_le_set_privacy_mode_sync(hdev, params);
2285 bt_dev_err(hdev, "Unable to set privacy mode: %d", err);
2289 /* Check if already in accept list */
2290 if (hci_bdaddr_list_lookup(&hdev->le_accept_list, ¶ms->addr,
2295 cp.bdaddr_type = params->addr_type;
2296 bacpy(&cp.bdaddr, ¶ms->addr);
2298 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST,
2299 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2301 bt_dev_err(hdev, "Unable to add to allow list: %d", err);
2302 /* Rollback the device from the resolving list */
2303 hci_le_del_resolve_list_sync(hdev, &cp.bdaddr, cp.bdaddr_type);
2307 bt_dev_dbg(hdev, "Add %pMR (0x%x) to allow list", &cp.bdaddr,
2313 /* This function disables/pause all advertising instances */
2314 static int hci_pause_advertising_sync(struct hci_dev *hdev)
2319 /* If already been paused there is nothing to do. */
2320 if (hdev->advertising_paused)
2323 bt_dev_dbg(hdev, "Pausing directed advertising");
2325 /* Stop directed advertising */
2326 old_state = hci_dev_test_flag(hdev, HCI_ADVERTISING);
2328 /* When discoverable timeout triggers, then just make sure
2329 * the limited discoverable flag is cleared. Even in the case
2330 * of a timeout triggered from general discoverable, it is
2331 * safe to unconditionally clear the flag.
2333 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
2334 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
2335 hdev->discov_timeout = 0;
2338 bt_dev_dbg(hdev, "Pausing advertising instances");
2340 /* Call to disable any advertisements active on the controller.
2341 * This will succeed even if no advertisements are configured.
2343 err = hci_disable_advertising_sync(hdev);
2347 /* If we are using software rotation, pause the loop */
2348 if (!ext_adv_capable(hdev))
2349 cancel_adv_timeout(hdev);
2351 hdev->advertising_paused = true;
2352 hdev->advertising_old_state = old_state;
2357 /* This function enables all user advertising instances */
2358 static int hci_resume_advertising_sync(struct hci_dev *hdev)
2360 struct adv_info *adv, *tmp;
2363 /* If advertising has not been paused there is nothing to do. */
2364 if (!hdev->advertising_paused)
2367 /* Resume directed advertising */
2368 hdev->advertising_paused = false;
2369 if (hdev->advertising_old_state) {
2370 hci_dev_set_flag(hdev, HCI_ADVERTISING);
2371 hdev->advertising_old_state = 0;
2374 bt_dev_dbg(hdev, "Resuming advertising instances");
2376 if (ext_adv_capable(hdev)) {
2377 /* Call for each tracked instance to be re-enabled */
2378 list_for_each_entry_safe(adv, tmp, &hdev->adv_instances, list) {
2379 err = hci_enable_ext_advertising_sync(hdev,
2384 /* If the instance cannot be resumed remove it */
2385 hci_remove_ext_adv_instance_sync(hdev, adv->instance,
2389 /* Schedule for most recent instance to be restarted and begin
2390 * the software rotation loop
2392 err = hci_schedule_adv_instance_sync(hdev,
2393 hdev->cur_adv_instance,
2397 hdev->advertising_paused = false;
2402 static int hci_pause_addr_resolution(struct hci_dev *hdev)
2406 if (!use_ll_privacy(hdev))
2409 if (!hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION))
2412 /* Cannot disable addr resolution if scanning is enabled or
2413 * when initiating an LE connection.
2415 if (hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
2416 hci_lookup_le_connect(hdev)) {
2417 bt_dev_err(hdev, "Command not allowed when scan/LE connect");
2421 /* Cannot disable addr resolution if advertising is enabled. */
2422 err = hci_pause_advertising_sync(hdev);
2424 bt_dev_err(hdev, "Pause advertising failed: %d", err);
2428 err = hci_le_set_addr_resolution_enable_sync(hdev, 0x00);
2430 bt_dev_err(hdev, "Unable to disable Address Resolution: %d",
2433 /* Return if address resolution is disabled and RPA is not used. */
2434 if (!err && scan_use_rpa(hdev))
2437 hci_resume_advertising_sync(hdev);
2441 struct sk_buff *hci_read_local_oob_data_sync(struct hci_dev *hdev,
2442 bool extended, struct sock *sk)
2444 u16 opcode = extended ? HCI_OP_READ_LOCAL_OOB_EXT_DATA :
2445 HCI_OP_READ_LOCAL_OOB_DATA;
2447 return __hci_cmd_sync_sk(hdev, opcode, 0, NULL, 0, HCI_CMD_TIMEOUT, sk);
2450 /* Device must not be scanning when updating the accept list.
2452 * Update is done using the following sequence:
2454 * use_ll_privacy((Disable Advertising) -> Disable Resolving List) ->
2455 * Remove Devices From Accept List ->
2456 * (has IRK && use_ll_privacy(Remove Devices From Resolving List))->
2457 * Add Devices to Accept List ->
2458 * (has IRK && use_ll_privacy(Remove Devices From Resolving List)) ->
2459 * use_ll_privacy(Enable Resolving List -> (Enable Advertising)) ->
2462 * In case of failure advertising shall be restored to its original state and
2463 * return would disable accept list since either accept or resolving list could
2464 * not be programmed.
2467 static u8 hci_update_accept_list_sync(struct hci_dev *hdev)
2469 struct hci_conn_params *params;
2470 struct bdaddr_list *b, *t;
2472 bool pend_conn, pend_report;
2476 /* Pause advertising if resolving list can be used as controllers
2477 * cannot accept resolving list modifications while advertising.
2479 if (use_ll_privacy(hdev)) {
2480 err = hci_pause_advertising_sync(hdev);
2482 bt_dev_err(hdev, "pause advertising failed: %d", err);
2487 /* Disable address resolution while reprogramming accept list since
2488 * devices that do have an IRK will be programmed in the resolving list
2489 * when LL Privacy is enabled.
2491 err = hci_le_set_addr_resolution_enable_sync(hdev, 0x00);
2493 bt_dev_err(hdev, "Unable to disable LL privacy: %d", err);
2497 /* Go through the current accept list programmed into the
2498 * controller one by one and check if that address is connected or is
2499 * still in the list of pending connections or list of devices to
2500 * report. If not present in either list, then remove it from
2503 list_for_each_entry_safe(b, t, &hdev->le_accept_list, list) {
2504 if (hci_conn_hash_lookup_le(hdev, &b->bdaddr, b->bdaddr_type))
2507 pend_conn = hci_pend_le_action_lookup(&hdev->pend_le_conns,
2510 pend_report = hci_pend_le_action_lookup(&hdev->pend_le_reports,
2514 /* If the device is not likely to connect or report,
2515 * remove it from the acceptlist.
2517 if (!pend_conn && !pend_report) {
2518 hci_le_del_accept_list_sync(hdev, &b->bdaddr,
2526 /* Since all no longer valid accept list entries have been
2527 * removed, walk through the list of pending connections
2528 * and ensure that any new device gets programmed into
2531 * If the list of the devices is larger than the list of
2532 * available accept list entries in the controller, then
2533 * just abort and return filer policy value to not use the
2536 list_for_each_entry(params, &hdev->pend_le_conns, action) {
2537 err = hci_le_add_accept_list_sync(hdev, params, &num_entries);
2542 /* After adding all new pending connections, walk through
2543 * the list of pending reports and also add these to the
2544 * accept list if there is still space. Abort if space runs out.
2546 list_for_each_entry(params, &hdev->pend_le_reports, action) {
2547 err = hci_le_add_accept_list_sync(hdev, params, &num_entries);
2552 /* Use the allowlist unless the following conditions are all true:
2553 * - We are not currently suspending
2554 * - There are 1 or more ADV monitors registered and it's not offloaded
2555 * - Interleaved scanning is not currently using the allowlist
2557 if (!idr_is_empty(&hdev->adv_monitors_idr) && !hdev->suspended &&
2558 hci_get_adv_monitor_offload_ext(hdev) == HCI_ADV_MONITOR_EXT_NONE &&
2559 hdev->interleave_scan_state != INTERLEAVE_SCAN_ALLOWLIST)
2563 filter_policy = err ? 0x00 : 0x01;
2565 /* Enable address resolution when LL Privacy is enabled. */
2566 err = hci_le_set_addr_resolution_enable_sync(hdev, 0x01);
2568 bt_dev_err(hdev, "Unable to enable LL privacy: %d", err);
2570 /* Resume advertising if it was paused */
2571 if (use_ll_privacy(hdev))
2572 hci_resume_advertising_sync(hdev);
2574 /* Select filter policy to use accept list */
2575 return filter_policy;
2578 /* Returns true if an le connection is in the scanning state */
2579 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
2581 struct hci_conn_hash *h = &hdev->conn_hash;
2586 list_for_each_entry_rcu(c, &h->list, list) {
2587 if (c->type == LE_LINK && c->state == BT_CONNECT &&
2588 test_bit(HCI_CONN_SCANNING, &c->flags)) {
2599 static int hci_le_set_ext_scan_param_sync(struct hci_dev *hdev, u8 type,
2600 u16 interval, u16 window,
2601 u8 own_addr_type, u8 filter_policy)
2603 struct hci_cp_le_set_ext_scan_params *cp;
2604 struct hci_cp_le_scan_phy_params *phy;
2605 u8 data[sizeof(*cp) + sizeof(*phy) * 2];
2609 phy = (void *)cp->data;
2611 memset(data, 0, sizeof(data));
2613 cp->own_addr_type = own_addr_type;
2614 cp->filter_policy = filter_policy;
2616 if (scan_1m(hdev) || scan_2m(hdev)) {
2617 cp->scanning_phys |= LE_SCAN_PHY_1M;
2620 phy->interval = cpu_to_le16(interval);
2621 phy->window = cpu_to_le16(window);
2627 if (scan_coded(hdev)) {
2628 cp->scanning_phys |= LE_SCAN_PHY_CODED;
2631 phy->interval = cpu_to_le16(interval);
2632 phy->window = cpu_to_le16(window);
2638 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS,
2639 sizeof(*cp) + sizeof(*phy) * num_phy,
2640 data, HCI_CMD_TIMEOUT);
2643 static int hci_le_set_scan_param_sync(struct hci_dev *hdev, u8 type,
2644 u16 interval, u16 window,
2645 u8 own_addr_type, u8 filter_policy)
2647 struct hci_cp_le_set_scan_param cp;
2649 if (use_ext_scan(hdev))
2650 return hci_le_set_ext_scan_param_sync(hdev, type, interval,
2651 window, own_addr_type,
2654 memset(&cp, 0, sizeof(cp));
2656 cp.interval = cpu_to_le16(interval);
2657 cp.window = cpu_to_le16(window);
2658 cp.own_address_type = own_addr_type;
2659 cp.filter_policy = filter_policy;
2661 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_PARAM,
2662 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2665 static int hci_start_scan_sync(struct hci_dev *hdev, u8 type, u16 interval,
2666 u16 window, u8 own_addr_type, u8 filter_policy,
2671 if (hdev->scanning_paused) {
2672 bt_dev_dbg(hdev, "Scanning is paused for suspend");
2676 err = hci_le_set_scan_param_sync(hdev, type, interval, window,
2677 own_addr_type, filter_policy);
2681 return hci_le_set_scan_enable_sync(hdev, LE_SCAN_ENABLE, filter_dup);
2684 static int hci_passive_scan_sync(struct hci_dev *hdev)
2688 u16 window, interval;
2689 u8 filter_dups = LE_SCAN_FILTER_DUP_ENABLE;
2692 if (hdev->scanning_paused) {
2693 bt_dev_dbg(hdev, "Scanning is paused for suspend");
2697 err = hci_scan_disable_sync(hdev);
2699 bt_dev_err(hdev, "disable scanning failed: %d", err);
2703 /* Set require_privacy to false since no SCAN_REQ are send
2704 * during passive scanning. Not using an non-resolvable address
2705 * here is important so that peer devices using direct
2706 * advertising with our address will be correctly reported
2707 * by the controller.
2709 if (hci_update_random_address_sync(hdev, false, scan_use_rpa(hdev),
2713 if (hdev->enable_advmon_interleave_scan &&
2714 hci_update_interleaved_scan_sync(hdev))
2717 bt_dev_dbg(hdev, "interleave state %d", hdev->interleave_scan_state);
2719 /* Adding or removing entries from the accept list must
2720 * happen before enabling scanning. The controller does
2721 * not allow accept list modification while scanning.
2723 filter_policy = hci_update_accept_list_sync(hdev);
2725 /* When the controller is using random resolvable addresses and
2726 * with that having LE privacy enabled, then controllers with
2727 * Extended Scanner Filter Policies support can now enable support
2728 * for handling directed advertising.
2730 * So instead of using filter polices 0x00 (no acceptlist)
2731 * and 0x01 (acceptlist enabled) use the new filter policies
2732 * 0x02 (no acceptlist) and 0x03 (acceptlist enabled).
2734 if (hci_dev_test_flag(hdev, HCI_PRIVACY) &&
2735 (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY))
2736 filter_policy |= 0x02;
2738 if (hdev->suspended) {
2739 window = hdev->le_scan_window_suspend;
2740 interval = hdev->le_scan_int_suspend;
2741 } else if (hci_is_le_conn_scanning(hdev)) {
2742 window = hdev->le_scan_window_connect;
2743 interval = hdev->le_scan_int_connect;
2744 } else if (hci_is_adv_monitoring(hdev)) {
2745 window = hdev->le_scan_window_adv_monitor;
2746 interval = hdev->le_scan_int_adv_monitor;
2748 window = hdev->le_scan_window;
2749 interval = hdev->le_scan_interval;
2752 /* Disable all filtering for Mesh */
2753 if (hci_dev_test_flag(hdev, HCI_MESH)) {
2755 filter_dups = LE_SCAN_FILTER_DUP_DISABLE;
2758 bt_dev_dbg(hdev, "LE passive scan with acceptlist = %d", filter_policy);
2760 return hci_start_scan_sync(hdev, LE_SCAN_PASSIVE, interval, window,
2761 own_addr_type, filter_policy, filter_dups);
2764 /* This function controls the passive scanning based on hdev->pend_le_conns
2765 * list. If there are pending LE connection we start the background scanning,
2766 * otherwise we stop it in the following sequence:
2768 * If there are devices to scan:
2770 * Disable Scanning -> Update Accept List ->
2771 * use_ll_privacy((Disable Advertising) -> Disable Resolving List ->
2772 * Update Resolving List -> Enable Resolving List -> (Enable Advertising)) ->
2779 int hci_update_passive_scan_sync(struct hci_dev *hdev)
2783 if (!test_bit(HCI_UP, &hdev->flags) ||
2784 test_bit(HCI_INIT, &hdev->flags) ||
2785 hci_dev_test_flag(hdev, HCI_SETUP) ||
2786 hci_dev_test_flag(hdev, HCI_CONFIG) ||
2787 hci_dev_test_flag(hdev, HCI_AUTO_OFF) ||
2788 hci_dev_test_flag(hdev, HCI_UNREGISTER))
2791 /* No point in doing scanning if LE support hasn't been enabled */
2792 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
2795 /* If discovery is active don't interfere with it */
2796 if (hdev->discovery.state != DISCOVERY_STOPPED)
2799 /* Reset RSSI and UUID filters when starting background scanning
2800 * since these filters are meant for service discovery only.
2802 * The Start Discovery and Start Service Discovery operations
2803 * ensure to set proper values for RSSI threshold and UUID
2804 * filter list. So it is safe to just reset them here.
2806 hci_discovery_filter_clear(hdev);
2808 bt_dev_dbg(hdev, "ADV monitoring is %s",
2809 hci_is_adv_monitoring(hdev) ? "on" : "off");
2811 if (!hci_dev_test_flag(hdev, HCI_MESH) &&
2812 list_empty(&hdev->pend_le_conns) &&
2813 list_empty(&hdev->pend_le_reports) &&
2814 !hci_is_adv_monitoring(hdev) &&
2815 !hci_dev_test_flag(hdev, HCI_PA_SYNC)) {
2816 /* If there is no pending LE connections or devices
2817 * to be scanned for or no ADV monitors, we should stop the
2818 * background scanning.
2821 bt_dev_dbg(hdev, "stopping background scanning");
2823 err = hci_scan_disable_sync(hdev);
2825 bt_dev_err(hdev, "stop background scanning failed: %d",
2828 /* If there is at least one pending LE connection, we should
2829 * keep the background scan running.
2832 /* If controller is connecting, we should not start scanning
2833 * since some controllers are not able to scan and connect at
2836 if (hci_lookup_le_connect(hdev))
2839 bt_dev_dbg(hdev, "start background scanning");
2841 err = hci_passive_scan_sync(hdev);
2843 bt_dev_err(hdev, "start background scanning failed: %d",
2850 static int update_scan_sync(struct hci_dev *hdev, void *data)
2852 return hci_update_scan_sync(hdev);
2855 int hci_update_scan(struct hci_dev *hdev)
2857 return hci_cmd_sync_queue(hdev, update_scan_sync, NULL, NULL);
2860 static int update_passive_scan_sync(struct hci_dev *hdev, void *data)
2862 return hci_update_passive_scan_sync(hdev);
2865 int hci_update_passive_scan(struct hci_dev *hdev)
2867 /* Only queue if it would have any effect */
2868 if (!test_bit(HCI_UP, &hdev->flags) ||
2869 test_bit(HCI_INIT, &hdev->flags) ||
2870 hci_dev_test_flag(hdev, HCI_SETUP) ||
2871 hci_dev_test_flag(hdev, HCI_CONFIG) ||
2872 hci_dev_test_flag(hdev, HCI_AUTO_OFF) ||
2873 hci_dev_test_flag(hdev, HCI_UNREGISTER))
2876 return hci_cmd_sync_queue(hdev, update_passive_scan_sync, NULL, NULL);
2879 int hci_write_sc_support_sync(struct hci_dev *hdev, u8 val)
2883 if (!bredr_sc_enabled(hdev) || lmp_host_sc_capable(hdev))
2886 err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SC_SUPPORT,
2887 sizeof(val), &val, HCI_CMD_TIMEOUT);
2891 hdev->features[1][0] |= LMP_HOST_SC;
2892 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
2894 hdev->features[1][0] &= ~LMP_HOST_SC;
2895 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
2902 int hci_write_ssp_mode_sync(struct hci_dev *hdev, u8 mode)
2906 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED) ||
2907 lmp_host_ssp_capable(hdev))
2910 if (!mode && hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS)) {
2911 __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE,
2912 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
2915 err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_MODE,
2916 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
2920 return hci_write_sc_support_sync(hdev, 0x01);
2923 int hci_write_le_host_supported_sync(struct hci_dev *hdev, u8 le, u8 simul)
2925 struct hci_cp_write_le_host_supported cp;
2927 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) ||
2928 !lmp_bredr_capable(hdev))
2931 /* Check first if we already have the right host state
2932 * (host features set)
2934 if (le == lmp_host_le_capable(hdev) &&
2935 simul == lmp_host_le_br_capable(hdev))
2938 memset(&cp, 0, sizeof(cp));
2943 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED,
2944 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2947 static int hci_powered_update_adv_sync(struct hci_dev *hdev)
2949 struct adv_info *adv, *tmp;
2952 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
2955 /* If RPA Resolution has not been enable yet it means the
2956 * resolving list is empty and we should attempt to program the
2957 * local IRK in order to support using own_addr_type
2958 * ADDR_LE_DEV_RANDOM_RESOLVED (0x03).
2960 if (!hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION)) {
2961 hci_le_add_resolve_list_sync(hdev, NULL);
2962 hci_le_set_addr_resolution_enable_sync(hdev, 0x01);
2965 /* Make sure the controller has a good default for
2966 * advertising data. This also applies to the case
2967 * where BR/EDR was toggled during the AUTO_OFF phase.
2969 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
2970 list_empty(&hdev->adv_instances)) {
2971 if (ext_adv_capable(hdev)) {
2972 err = hci_setup_ext_adv_instance_sync(hdev, 0x00);
2974 hci_update_scan_rsp_data_sync(hdev, 0x00);
2976 err = hci_update_adv_data_sync(hdev, 0x00);
2978 hci_update_scan_rsp_data_sync(hdev, 0x00);
2981 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
2982 hci_enable_advertising_sync(hdev);
2985 /* Call for each tracked instance to be scheduled */
2986 list_for_each_entry_safe(adv, tmp, &hdev->adv_instances, list)
2987 hci_schedule_adv_instance_sync(hdev, adv->instance, true);
2992 static int hci_write_auth_enable_sync(struct hci_dev *hdev)
2996 link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY);
2997 if (link_sec == test_bit(HCI_AUTH, &hdev->flags))
3000 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_AUTH_ENABLE,
3001 sizeof(link_sec), &link_sec,
3005 int hci_write_fast_connectable_sync(struct hci_dev *hdev, bool enable)
3007 struct hci_cp_write_page_scan_activity cp;
3011 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
3014 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
3017 memset(&cp, 0, sizeof(cp));
3020 type = PAGE_SCAN_TYPE_INTERLACED;
3022 /* 160 msec page scan interval */
3023 cp.interval = cpu_to_le16(0x0100);
3025 type = hdev->def_page_scan_type;
3026 cp.interval = cpu_to_le16(hdev->def_page_scan_int);
3029 cp.window = cpu_to_le16(hdev->def_page_scan_window);
3031 if (__cpu_to_le16(hdev->page_scan_interval) != cp.interval ||
3032 __cpu_to_le16(hdev->page_scan_window) != cp.window) {
3033 err = __hci_cmd_sync_status(hdev,
3034 HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
3035 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3040 if (hdev->page_scan_type != type)
3041 err = __hci_cmd_sync_status(hdev,
3042 HCI_OP_WRITE_PAGE_SCAN_TYPE,
3043 sizeof(type), &type,
3049 static bool disconnected_accept_list_entries(struct hci_dev *hdev)
3051 struct bdaddr_list *b;
3053 list_for_each_entry(b, &hdev->accept_list, list) {
3054 struct hci_conn *conn;
3056 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &b->bdaddr);
3060 if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG)
3067 static int hci_write_scan_enable_sync(struct hci_dev *hdev, u8 val)
3069 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SCAN_ENABLE,
3074 int hci_update_scan_sync(struct hci_dev *hdev)
3078 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
3081 if (!hdev_is_powered(hdev))
3084 if (mgmt_powering_down(hdev))
3087 if (hdev->scanning_paused)
3090 if (hci_dev_test_flag(hdev, HCI_CONNECTABLE) ||
3091 disconnected_accept_list_entries(hdev))
3094 scan = SCAN_DISABLED;
3096 if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
3097 scan |= SCAN_INQUIRY;
3099 if (test_bit(HCI_PSCAN, &hdev->flags) == !!(scan & SCAN_PAGE) &&
3100 test_bit(HCI_ISCAN, &hdev->flags) == !!(scan & SCAN_INQUIRY))
3103 return hci_write_scan_enable_sync(hdev, scan);
3106 int hci_update_name_sync(struct hci_dev *hdev)
3108 struct hci_cp_write_local_name cp;
3110 memset(&cp, 0, sizeof(cp));
3112 memcpy(cp.name, hdev->dev_name, sizeof(cp.name));
3114 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LOCAL_NAME,
3119 /* This function perform powered update HCI command sequence after the HCI init
3120 * sequence which end up resetting all states, the sequence is as follows:
3122 * HCI_SSP_ENABLED(Enable SSP)
3123 * HCI_LE_ENABLED(Enable LE)
3124 * HCI_LE_ENABLED(use_ll_privacy(Add local IRK to Resolving List) ->
3126 * Enable Authentication
3127 * lmp_bredr_capable(Set Fast Connectable -> Set Scan Type -> Set Class ->
3128 * Set Name -> Set EIR)
3129 * HCI_FORCE_STATIC_ADDR | BDADDR_ANY && !HCI_BREDR_ENABLED (Set Static Address)
3131 int hci_powered_update_sync(struct hci_dev *hdev)
3135 /* Register the available SMP channels (BR/EDR and LE) only when
3136 * successfully powering on the controller. This late
3137 * registration is required so that LE SMP can clearly decide if
3138 * the public address or static address is used.
3142 err = hci_write_ssp_mode_sync(hdev, 0x01);
3146 err = hci_write_le_host_supported_sync(hdev, 0x01, 0x00);
3150 err = hci_powered_update_adv_sync(hdev);
3154 err = hci_write_auth_enable_sync(hdev);
3158 if (lmp_bredr_capable(hdev)) {
3159 if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE))
3160 hci_write_fast_connectable_sync(hdev, true);
3162 hci_write_fast_connectable_sync(hdev, false);
3163 hci_update_scan_sync(hdev);
3164 hci_update_class_sync(hdev);
3165 hci_update_name_sync(hdev);
3166 hci_update_eir_sync(hdev);
3169 /* If forcing static address is in use or there is no public
3170 * address use the static address as random address (but skip
3171 * the HCI command if the current random address is already the
3174 * In case BR/EDR has been disabled on a dual-mode controller
3175 * and a static address has been configured, then use that
3176 * address instead of the public BR/EDR address.
3178 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
3179 (!bacmp(&hdev->bdaddr, BDADDR_ANY) &&
3180 !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))) {
3181 if (bacmp(&hdev->static_addr, BDADDR_ANY))
3182 return hci_set_random_addr_sync(hdev,
3183 &hdev->static_addr);
3190 * hci_dev_get_bd_addr_from_property - Get the Bluetooth Device Address
3191 * (BD_ADDR) for a HCI device from
3192 * a firmware node property.
3193 * @hdev: The HCI device
3195 * Search the firmware node for 'local-bd-address'.
3197 * All-zero BD addresses are rejected, because those could be properties
3198 * that exist in the firmware tables, but were not updated by the firmware. For
3199 * example, the DTS could define 'local-bd-address', with zero BD addresses.
3201 static void hci_dev_get_bd_addr_from_property(struct hci_dev *hdev)
3203 struct fwnode_handle *fwnode = dev_fwnode(hdev->dev.parent);
3207 ret = fwnode_property_read_u8_array(fwnode, "local-bd-address",
3208 (u8 *)&ba, sizeof(ba));
3209 if (ret < 0 || !bacmp(&ba, BDADDR_ANY))
3212 bacpy(&hdev->public_addr, &ba);
3215 struct hci_init_stage {
3216 int (*func)(struct hci_dev *hdev);
3219 /* Run init stage NULL terminated function table */
3220 static int hci_init_stage_sync(struct hci_dev *hdev,
3221 const struct hci_init_stage *stage)
3225 for (i = 0; stage[i].func; i++) {
3228 err = stage[i].func(hdev);
3236 /* Read Local Version */
3237 static int hci_read_local_version_sync(struct hci_dev *hdev)
3239 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_VERSION,
3240 0, NULL, HCI_CMD_TIMEOUT);
3243 /* Read BD Address */
3244 static int hci_read_bd_addr_sync(struct hci_dev *hdev)
3246 return __hci_cmd_sync_status(hdev, HCI_OP_READ_BD_ADDR,
3247 0, NULL, HCI_CMD_TIMEOUT);
3250 #define HCI_INIT(_func) \
3255 static const struct hci_init_stage hci_init0[] = {
3256 /* HCI_OP_READ_LOCAL_VERSION */
3257 HCI_INIT(hci_read_local_version_sync),
3258 /* HCI_OP_READ_BD_ADDR */
3259 HCI_INIT(hci_read_bd_addr_sync),
3263 int hci_reset_sync(struct hci_dev *hdev)
3267 set_bit(HCI_RESET, &hdev->flags);
3269 err = __hci_cmd_sync_status(hdev, HCI_OP_RESET, 0, NULL,
3277 static int hci_init0_sync(struct hci_dev *hdev)
3281 bt_dev_dbg(hdev, "");
3284 if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) {
3285 err = hci_reset_sync(hdev);
3290 return hci_init_stage_sync(hdev, hci_init0);
3293 static int hci_unconf_init_sync(struct hci_dev *hdev)
3297 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
3300 err = hci_init0_sync(hdev);
3304 if (hci_dev_test_flag(hdev, HCI_SETUP))
3305 hci_debugfs_create_basic(hdev);
3310 /* Read Local Supported Features. */
3311 static int hci_read_local_features_sync(struct hci_dev *hdev)
3313 /* Not all AMP controllers support this command */
3314 if (hdev->dev_type == HCI_AMP && !(hdev->commands[14] & 0x20))
3317 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_FEATURES,
3318 0, NULL, HCI_CMD_TIMEOUT);
3321 /* BR Controller init stage 1 command sequence */
3322 static const struct hci_init_stage br_init1[] = {
3323 /* HCI_OP_READ_LOCAL_FEATURES */
3324 HCI_INIT(hci_read_local_features_sync),
3325 /* HCI_OP_READ_LOCAL_VERSION */
3326 HCI_INIT(hci_read_local_version_sync),
3327 /* HCI_OP_READ_BD_ADDR */
3328 HCI_INIT(hci_read_bd_addr_sync),
3332 /* Read Local Commands */
3333 static int hci_read_local_cmds_sync(struct hci_dev *hdev)
3335 /* All Bluetooth 1.2 and later controllers should support the
3336 * HCI command for reading the local supported commands.
3338 * Unfortunately some controllers indicate Bluetooth 1.2 support,
3339 * but do not have support for this command. If that is the case,
3340 * the driver can quirk the behavior and skip reading the local
3341 * supported commands.
3343 if (hdev->hci_ver > BLUETOOTH_VER_1_1 &&
3344 !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks))
3345 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_COMMANDS,
3346 0, NULL, HCI_CMD_TIMEOUT);
3351 /* Read Local AMP Info */
3352 static int hci_read_local_amp_info_sync(struct hci_dev *hdev)
3354 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_AMP_INFO,
3355 0, NULL, HCI_CMD_TIMEOUT);
3358 /* Read Data Blk size */
3359 static int hci_read_data_block_size_sync(struct hci_dev *hdev)
3361 return __hci_cmd_sync_status(hdev, HCI_OP_READ_DATA_BLOCK_SIZE,
3362 0, NULL, HCI_CMD_TIMEOUT);
3365 /* Read Flow Control Mode */
3366 static int hci_read_flow_control_mode_sync(struct hci_dev *hdev)
3368 return __hci_cmd_sync_status(hdev, HCI_OP_READ_FLOW_CONTROL_MODE,
3369 0, NULL, HCI_CMD_TIMEOUT);
3372 /* Read Location Data */
3373 static int hci_read_location_data_sync(struct hci_dev *hdev)
3375 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCATION_DATA,
3376 0, NULL, HCI_CMD_TIMEOUT);
3379 /* AMP Controller init stage 1 command sequence */
3380 static const struct hci_init_stage amp_init1[] = {
3381 /* HCI_OP_READ_LOCAL_VERSION */
3382 HCI_INIT(hci_read_local_version_sync),
3383 /* HCI_OP_READ_LOCAL_COMMANDS */
3384 HCI_INIT(hci_read_local_cmds_sync),
3385 /* HCI_OP_READ_LOCAL_AMP_INFO */
3386 HCI_INIT(hci_read_local_amp_info_sync),
3387 /* HCI_OP_READ_DATA_BLOCK_SIZE */
3388 HCI_INIT(hci_read_data_block_size_sync),
3389 /* HCI_OP_READ_FLOW_CONTROL_MODE */
3390 HCI_INIT(hci_read_flow_control_mode_sync),
3391 /* HCI_OP_READ_LOCATION_DATA */
3392 HCI_INIT(hci_read_location_data_sync),
3396 static int hci_init1_sync(struct hci_dev *hdev)
3400 bt_dev_dbg(hdev, "");
3403 if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) {
3404 err = hci_reset_sync(hdev);
3409 switch (hdev->dev_type) {
3411 hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED;
3412 return hci_init_stage_sync(hdev, br_init1);
3414 hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED;
3415 return hci_init_stage_sync(hdev, amp_init1);
3417 bt_dev_err(hdev, "Unknown device type %d", hdev->dev_type);
3424 /* AMP Controller init stage 2 command sequence */
3425 static const struct hci_init_stage amp_init2[] = {
3426 /* HCI_OP_READ_LOCAL_FEATURES */
3427 HCI_INIT(hci_read_local_features_sync),
3431 /* Read Buffer Size (ACL mtu, max pkt, etc.) */
3432 static int hci_read_buffer_size_sync(struct hci_dev *hdev)
3434 return __hci_cmd_sync_status(hdev, HCI_OP_READ_BUFFER_SIZE,
3435 0, NULL, HCI_CMD_TIMEOUT);
3438 /* Read Class of Device */
3439 static int hci_read_dev_class_sync(struct hci_dev *hdev)
3441 return __hci_cmd_sync_status(hdev, HCI_OP_READ_CLASS_OF_DEV,
3442 0, NULL, HCI_CMD_TIMEOUT);
3445 /* Read Local Name */
3446 static int hci_read_local_name_sync(struct hci_dev *hdev)
3448 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_NAME,
3449 0, NULL, HCI_CMD_TIMEOUT);
3452 /* Read Voice Setting */
3453 static int hci_read_voice_setting_sync(struct hci_dev *hdev)
3455 return __hci_cmd_sync_status(hdev, HCI_OP_READ_VOICE_SETTING,
3456 0, NULL, HCI_CMD_TIMEOUT);
3459 /* Read Number of Supported IAC */
3460 static int hci_read_num_supported_iac_sync(struct hci_dev *hdev)
3462 return __hci_cmd_sync_status(hdev, HCI_OP_READ_NUM_SUPPORTED_IAC,
3463 0, NULL, HCI_CMD_TIMEOUT);
3466 /* Read Current IAC LAP */
3467 static int hci_read_current_iac_lap_sync(struct hci_dev *hdev)
3469 return __hci_cmd_sync_status(hdev, HCI_OP_READ_CURRENT_IAC_LAP,
3470 0, NULL, HCI_CMD_TIMEOUT);
3473 static int hci_set_event_filter_sync(struct hci_dev *hdev, u8 flt_type,
3474 u8 cond_type, bdaddr_t *bdaddr,
3477 struct hci_cp_set_event_filter cp;
3479 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
3482 if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks))
3485 memset(&cp, 0, sizeof(cp));
3486 cp.flt_type = flt_type;
3488 if (flt_type != HCI_FLT_CLEAR_ALL) {
3489 cp.cond_type = cond_type;
3490 bacpy(&cp.addr_conn_flt.bdaddr, bdaddr);
3491 cp.addr_conn_flt.auto_accept = auto_accept;
3494 return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_FLT,
3495 flt_type == HCI_FLT_CLEAR_ALL ?
3496 sizeof(cp.flt_type) : sizeof(cp), &cp,
3500 static int hci_clear_event_filter_sync(struct hci_dev *hdev)
3502 if (!hci_dev_test_flag(hdev, HCI_EVENT_FILTER_CONFIGURED))
3505 /* In theory the state machine should not reach here unless
3506 * a hci_set_event_filter_sync() call succeeds, but we do
3507 * the check both for parity and as a future reminder.
3509 if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks))
3512 return hci_set_event_filter_sync(hdev, HCI_FLT_CLEAR_ALL, 0x00,
3516 /* Connection accept timeout ~20 secs */
3517 static int hci_write_ca_timeout_sync(struct hci_dev *hdev)
3519 __le16 param = cpu_to_le16(0x7d00);
3521 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CA_TIMEOUT,
3522 sizeof(param), ¶m, HCI_CMD_TIMEOUT);
3525 /* BR Controller init stage 2 command sequence */
3526 static const struct hci_init_stage br_init2[] = {
3527 /* HCI_OP_READ_BUFFER_SIZE */
3528 HCI_INIT(hci_read_buffer_size_sync),
3529 /* HCI_OP_READ_CLASS_OF_DEV */
3530 HCI_INIT(hci_read_dev_class_sync),
3531 /* HCI_OP_READ_LOCAL_NAME */
3532 HCI_INIT(hci_read_local_name_sync),
3533 /* HCI_OP_READ_VOICE_SETTING */
3534 HCI_INIT(hci_read_voice_setting_sync),
3535 /* HCI_OP_READ_NUM_SUPPORTED_IAC */
3536 HCI_INIT(hci_read_num_supported_iac_sync),
3537 /* HCI_OP_READ_CURRENT_IAC_LAP */
3538 HCI_INIT(hci_read_current_iac_lap_sync),
3539 /* HCI_OP_SET_EVENT_FLT */
3540 HCI_INIT(hci_clear_event_filter_sync),
3541 /* HCI_OP_WRITE_CA_TIMEOUT */
3542 HCI_INIT(hci_write_ca_timeout_sync),
3546 static int hci_write_ssp_mode_1_sync(struct hci_dev *hdev)
3550 if (!lmp_ssp_capable(hdev) || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
3553 /* When SSP is available, then the host features page
3554 * should also be available as well. However some
3555 * controllers list the max_page as 0 as long as SSP
3556 * has not been enabled. To achieve proper debugging
3557 * output, force the minimum max_page to 1 at least.
3559 hdev->max_page = 0x01;
3561 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_MODE,
3562 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
3565 static int hci_write_eir_sync(struct hci_dev *hdev)
3567 struct hci_cp_write_eir cp;
3569 if (!lmp_ssp_capable(hdev) || hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
3572 memset(hdev->eir, 0, sizeof(hdev->eir));
3573 memset(&cp, 0, sizeof(cp));
3575 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp,
3579 static int hci_write_inquiry_mode_sync(struct hci_dev *hdev)
3583 if (!lmp_inq_rssi_capable(hdev) &&
3584 !test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks))
3587 /* If Extended Inquiry Result events are supported, then
3588 * they are clearly preferred over Inquiry Result with RSSI
3591 mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01;
3593 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_INQUIRY_MODE,
3594 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
3597 static int hci_read_inq_rsp_tx_power_sync(struct hci_dev *hdev)
3599 if (!lmp_inq_tx_pwr_capable(hdev))
3602 return __hci_cmd_sync_status(hdev, HCI_OP_READ_INQ_RSP_TX_POWER,
3603 0, NULL, HCI_CMD_TIMEOUT);
3606 static int hci_read_local_ext_features_sync(struct hci_dev *hdev, u8 page)
3608 struct hci_cp_read_local_ext_features cp;
3610 if (!lmp_ext_feat_capable(hdev))
3613 memset(&cp, 0, sizeof(cp));
3616 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_EXT_FEATURES,
3617 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3620 static int hci_read_local_ext_features_1_sync(struct hci_dev *hdev)
3622 return hci_read_local_ext_features_sync(hdev, 0x01);
3625 /* HCI Controller init stage 2 command sequence */
3626 static const struct hci_init_stage hci_init2[] = {
3627 /* HCI_OP_READ_LOCAL_COMMANDS */
3628 HCI_INIT(hci_read_local_cmds_sync),
3629 /* HCI_OP_WRITE_SSP_MODE */
3630 HCI_INIT(hci_write_ssp_mode_1_sync),
3631 /* HCI_OP_WRITE_EIR */
3632 HCI_INIT(hci_write_eir_sync),
3633 /* HCI_OP_WRITE_INQUIRY_MODE */
3634 HCI_INIT(hci_write_inquiry_mode_sync),
3635 /* HCI_OP_READ_INQ_RSP_TX_POWER */
3636 HCI_INIT(hci_read_inq_rsp_tx_power_sync),
3637 /* HCI_OP_READ_LOCAL_EXT_FEATURES */
3638 HCI_INIT(hci_read_local_ext_features_1_sync),
3639 /* HCI_OP_WRITE_AUTH_ENABLE */
3640 HCI_INIT(hci_write_auth_enable_sync),
3644 /* Read LE Buffer Size */
3645 static int hci_le_read_buffer_size_sync(struct hci_dev *hdev)
3647 /* Use Read LE Buffer Size V2 if supported */
3648 if (iso_capable(hdev) && hdev->commands[41] & 0x20)
3649 return __hci_cmd_sync_status(hdev,
3650 HCI_OP_LE_READ_BUFFER_SIZE_V2,
3651 0, NULL, HCI_CMD_TIMEOUT);
3653 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_BUFFER_SIZE,
3654 0, NULL, HCI_CMD_TIMEOUT);
3657 /* Read LE Local Supported Features */
3658 static int hci_le_read_local_features_sync(struct hci_dev *hdev)
3660 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_LOCAL_FEATURES,
3661 0, NULL, HCI_CMD_TIMEOUT);
3664 /* Read LE Supported States */
3665 static int hci_le_read_supported_states_sync(struct hci_dev *hdev)
3667 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_SUPPORTED_STATES,
3668 0, NULL, HCI_CMD_TIMEOUT);
3671 /* LE Controller init stage 2 command sequence */
3672 static const struct hci_init_stage le_init2[] = {
3673 /* HCI_OP_LE_READ_LOCAL_FEATURES */
3674 HCI_INIT(hci_le_read_local_features_sync),
3675 /* HCI_OP_LE_READ_BUFFER_SIZE */
3676 HCI_INIT(hci_le_read_buffer_size_sync),
3677 /* HCI_OP_LE_READ_SUPPORTED_STATES */
3678 HCI_INIT(hci_le_read_supported_states_sync),
3682 static int hci_init2_sync(struct hci_dev *hdev)
3686 bt_dev_dbg(hdev, "");
3688 if (hdev->dev_type == HCI_AMP)
3689 return hci_init_stage_sync(hdev, amp_init2);
3691 err = hci_init_stage_sync(hdev, hci_init2);
3695 if (lmp_bredr_capable(hdev)) {
3696 err = hci_init_stage_sync(hdev, br_init2);
3700 hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED);
3703 if (lmp_le_capable(hdev)) {
3704 err = hci_init_stage_sync(hdev, le_init2);
3707 /* LE-only controllers have LE implicitly enabled */
3708 if (!lmp_bredr_capable(hdev))
3709 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
3715 static int hci_set_event_mask_sync(struct hci_dev *hdev)
3717 /* The second byte is 0xff instead of 0x9f (two reserved bits
3718 * disabled) since a Broadcom 1.2 dongle doesn't respond to the
3719 * command otherwise.
3721 u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 };
3723 /* CSR 1.1 dongles does not accept any bitfield so don't try to set
3724 * any event mask for pre 1.2 devices.
3726 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
3729 if (lmp_bredr_capable(hdev)) {
3730 events[4] |= 0x01; /* Flow Specification Complete */
3732 /* Don't set Disconnect Complete when suspended as that
3733 * would wakeup the host when disconnecting due to
3736 if (hdev->suspended)
3739 /* Use a different default for LE-only devices */
3740 memset(events, 0, sizeof(events));
3741 events[1] |= 0x20; /* Command Complete */
3742 events[1] |= 0x40; /* Command Status */
3743 events[1] |= 0x80; /* Hardware Error */
3745 /* If the controller supports the Disconnect command, enable
3746 * the corresponding event. In addition enable packet flow
3747 * control related events.
3749 if (hdev->commands[0] & 0x20) {
3750 /* Don't set Disconnect Complete when suspended as that
3751 * would wakeup the host when disconnecting due to
3754 if (!hdev->suspended)
3755 events[0] |= 0x10; /* Disconnection Complete */
3756 events[2] |= 0x04; /* Number of Completed Packets */
3757 events[3] |= 0x02; /* Data Buffer Overflow */
3760 /* If the controller supports the Read Remote Version
3761 * Information command, enable the corresponding event.
3763 if (hdev->commands[2] & 0x80)
3764 events[1] |= 0x08; /* Read Remote Version Information
3768 if (hdev->le_features[0] & HCI_LE_ENCRYPTION) {
3769 events[0] |= 0x80; /* Encryption Change */
3770 events[5] |= 0x80; /* Encryption Key Refresh Complete */
3774 if (lmp_inq_rssi_capable(hdev) ||
3775 test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks))
3776 events[4] |= 0x02; /* Inquiry Result with RSSI */
3778 if (lmp_ext_feat_capable(hdev))
3779 events[4] |= 0x04; /* Read Remote Extended Features Complete */
3781 if (lmp_esco_capable(hdev)) {
3782 events[5] |= 0x08; /* Synchronous Connection Complete */
3783 events[5] |= 0x10; /* Synchronous Connection Changed */
3786 if (lmp_sniffsubr_capable(hdev))
3787 events[5] |= 0x20; /* Sniff Subrating */
3789 if (lmp_pause_enc_capable(hdev))
3790 events[5] |= 0x80; /* Encryption Key Refresh Complete */
3792 if (lmp_ext_inq_capable(hdev))
3793 events[5] |= 0x40; /* Extended Inquiry Result */
3795 if (lmp_no_flush_capable(hdev))
3796 events[7] |= 0x01; /* Enhanced Flush Complete */
3798 if (lmp_lsto_capable(hdev))
3799 events[6] |= 0x80; /* Link Supervision Timeout Changed */
3801 if (lmp_ssp_capable(hdev)) {
3802 events[6] |= 0x01; /* IO Capability Request */
3803 events[6] |= 0x02; /* IO Capability Response */
3804 events[6] |= 0x04; /* User Confirmation Request */
3805 events[6] |= 0x08; /* User Passkey Request */
3806 events[6] |= 0x10; /* Remote OOB Data Request */
3807 events[6] |= 0x20; /* Simple Pairing Complete */
3808 events[7] |= 0x04; /* User Passkey Notification */
3809 events[7] |= 0x08; /* Keypress Notification */
3810 events[7] |= 0x10; /* Remote Host Supported
3811 * Features Notification
3815 if (lmp_le_capable(hdev))
3816 events[7] |= 0x20; /* LE Meta-Event */
3818 return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_MASK,
3819 sizeof(events), events, HCI_CMD_TIMEOUT);
3822 static int hci_read_stored_link_key_sync(struct hci_dev *hdev)
3824 struct hci_cp_read_stored_link_key cp;
3826 if (!(hdev->commands[6] & 0x20) ||
3827 test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks))
3830 memset(&cp, 0, sizeof(cp));
3831 bacpy(&cp.bdaddr, BDADDR_ANY);
3834 return __hci_cmd_sync_status(hdev, HCI_OP_READ_STORED_LINK_KEY,
3835 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3838 static int hci_setup_link_policy_sync(struct hci_dev *hdev)
3840 struct hci_cp_write_def_link_policy cp;
3841 u16 link_policy = 0;
3843 if (!(hdev->commands[5] & 0x10))
3846 memset(&cp, 0, sizeof(cp));
3848 if (lmp_rswitch_capable(hdev))
3849 link_policy |= HCI_LP_RSWITCH;
3850 if (lmp_hold_capable(hdev))
3851 link_policy |= HCI_LP_HOLD;
3852 if (lmp_sniff_capable(hdev))
3853 link_policy |= HCI_LP_SNIFF;
3854 if (lmp_park_capable(hdev))
3855 link_policy |= HCI_LP_PARK;
3857 cp.policy = cpu_to_le16(link_policy);
3859 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_DEF_LINK_POLICY,
3860 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3863 static int hci_read_page_scan_activity_sync(struct hci_dev *hdev)
3865 if (!(hdev->commands[8] & 0x01))
3868 return __hci_cmd_sync_status(hdev, HCI_OP_READ_PAGE_SCAN_ACTIVITY,
3869 0, NULL, HCI_CMD_TIMEOUT);
3872 static int hci_read_def_err_data_reporting_sync(struct hci_dev *hdev)
3874 if (!(hdev->commands[18] & 0x04) ||
3875 !(hdev->features[0][6] & LMP_ERR_DATA_REPORTING) ||
3876 test_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks))
3879 return __hci_cmd_sync_status(hdev, HCI_OP_READ_DEF_ERR_DATA_REPORTING,
3880 0, NULL, HCI_CMD_TIMEOUT);
3883 static int hci_read_page_scan_type_sync(struct hci_dev *hdev)
3885 /* Some older Broadcom based Bluetooth 1.2 controllers do not
3886 * support the Read Page Scan Type command. Check support for
3887 * this command in the bit mask of supported commands.
3889 if (!(hdev->commands[13] & 0x01))
3892 return __hci_cmd_sync_status(hdev, HCI_OP_READ_PAGE_SCAN_TYPE,
3893 0, NULL, HCI_CMD_TIMEOUT);
3896 /* Read features beyond page 1 if available */
3897 static int hci_read_local_ext_features_all_sync(struct hci_dev *hdev)
3902 if (!lmp_ext_feat_capable(hdev))
3905 for (page = 2; page < HCI_MAX_PAGES && page <= hdev->max_page;
3907 err = hci_read_local_ext_features_sync(hdev, page);
3915 /* HCI Controller init stage 3 command sequence */
3916 static const struct hci_init_stage hci_init3[] = {
3917 /* HCI_OP_SET_EVENT_MASK */
3918 HCI_INIT(hci_set_event_mask_sync),
3919 /* HCI_OP_READ_STORED_LINK_KEY */
3920 HCI_INIT(hci_read_stored_link_key_sync),
3921 /* HCI_OP_WRITE_DEF_LINK_POLICY */
3922 HCI_INIT(hci_setup_link_policy_sync),
3923 /* HCI_OP_READ_PAGE_SCAN_ACTIVITY */
3924 HCI_INIT(hci_read_page_scan_activity_sync),
3925 /* HCI_OP_READ_DEF_ERR_DATA_REPORTING */
3926 HCI_INIT(hci_read_def_err_data_reporting_sync),
3927 /* HCI_OP_READ_PAGE_SCAN_TYPE */
3928 HCI_INIT(hci_read_page_scan_type_sync),
3929 /* HCI_OP_READ_LOCAL_EXT_FEATURES */
3930 HCI_INIT(hci_read_local_ext_features_all_sync),
3934 static int hci_le_set_event_mask_sync(struct hci_dev *hdev)
3938 if (!lmp_le_capable(hdev))
3941 memset(events, 0, sizeof(events));
3943 if (hdev->le_features[0] & HCI_LE_ENCRYPTION)
3944 events[0] |= 0x10; /* LE Long Term Key Request */
3946 /* If controller supports the Connection Parameters Request
3947 * Link Layer Procedure, enable the corresponding event.
3949 if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC)
3950 /* LE Remote Connection Parameter Request */
3953 /* If the controller supports the Data Length Extension
3954 * feature, enable the corresponding event.
3956 if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT)
3957 events[0] |= 0x40; /* LE Data Length Change */
3959 /* If the controller supports LL Privacy feature or LE Extended Adv,
3960 * enable the corresponding event.
3962 if (use_enhanced_conn_complete(hdev))
3963 events[1] |= 0x02; /* LE Enhanced Connection Complete */
3965 /* If the controller supports Extended Scanner Filter
3966 * Policies, enable the corresponding event.
3968 if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY)
3969 events[1] |= 0x04; /* LE Direct Advertising Report */
3971 /* If the controller supports Channel Selection Algorithm #2
3972 * feature, enable the corresponding event.
3974 if (hdev->le_features[1] & HCI_LE_CHAN_SEL_ALG2)
3975 events[2] |= 0x08; /* LE Channel Selection Algorithm */
3977 /* If the controller supports the LE Set Scan Enable command,
3978 * enable the corresponding advertising report event.
3980 if (hdev->commands[26] & 0x08)
3981 events[0] |= 0x02; /* LE Advertising Report */
3983 /* If the controller supports the LE Create Connection
3984 * command, enable the corresponding event.
3986 if (hdev->commands[26] & 0x10)
3987 events[0] |= 0x01; /* LE Connection Complete */
3989 /* If the controller supports the LE Connection Update
3990 * command, enable the corresponding event.
3992 if (hdev->commands[27] & 0x04)
3993 events[0] |= 0x04; /* LE Connection Update Complete */
3995 /* If the controller supports the LE Read Remote Used Features
3996 * command, enable the corresponding event.
3998 if (hdev->commands[27] & 0x20)
3999 /* LE Read Remote Used Features Complete */
4002 /* If the controller supports the LE Read Local P-256
4003 * Public Key command, enable the corresponding event.
4005 if (hdev->commands[34] & 0x02)
4006 /* LE Read Local P-256 Public Key Complete */
4009 /* If the controller supports the LE Generate DHKey
4010 * command, enable the corresponding event.
4012 if (hdev->commands[34] & 0x04)
4013 events[1] |= 0x01; /* LE Generate DHKey Complete */
4015 /* If the controller supports the LE Set Default PHY or
4016 * LE Set PHY commands, enable the corresponding event.
4018 if (hdev->commands[35] & (0x20 | 0x40))
4019 events[1] |= 0x08; /* LE PHY Update Complete */
4021 /* If the controller supports LE Set Extended Scan Parameters
4022 * and LE Set Extended Scan Enable commands, enable the
4023 * corresponding event.
4025 if (use_ext_scan(hdev))
4026 events[1] |= 0x10; /* LE Extended Advertising Report */
4028 /* If the controller supports the LE Extended Advertising
4029 * command, enable the corresponding event.
4031 if (ext_adv_capable(hdev))
4032 events[2] |= 0x02; /* LE Advertising Set Terminated */
4034 if (cis_capable(hdev)) {
4035 events[3] |= 0x01; /* LE CIS Established */
4036 if (cis_peripheral_capable(hdev))
4037 events[3] |= 0x02; /* LE CIS Request */
4040 if (bis_capable(hdev)) {
4041 events[3] |= 0x04; /* LE Create BIG Complete */
4042 events[3] |= 0x08; /* LE Terminate BIG Complete */
4043 events[3] |= 0x10; /* LE BIG Sync Established */
4044 events[3] |= 0x20; /* LE BIG Sync Loss */
4047 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EVENT_MASK,
4048 sizeof(events), events, HCI_CMD_TIMEOUT);
4051 /* Read LE Advertising Channel TX Power */
4052 static int hci_le_read_adv_tx_power_sync(struct hci_dev *hdev)
4054 if ((hdev->commands[25] & 0x40) && !ext_adv_capable(hdev)) {
4055 /* HCI TS spec forbids mixing of legacy and extended
4056 * advertising commands wherein READ_ADV_TX_POWER is
4057 * also included. So do not call it if extended adv
4058 * is supported otherwise controller will return
4059 * COMMAND_DISALLOWED for extended commands.
4061 return __hci_cmd_sync_status(hdev,
4062 HCI_OP_LE_READ_ADV_TX_POWER,
4063 0, NULL, HCI_CMD_TIMEOUT);
4069 /* Read LE Min/Max Tx Power*/
4070 static int hci_le_read_tx_power_sync(struct hci_dev *hdev)
4072 if (!(hdev->commands[38] & 0x80) ||
4073 test_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks))
4076 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_TRANSMIT_POWER,
4077 0, NULL, HCI_CMD_TIMEOUT);
4080 /* Read LE Accept List Size */
4081 static int hci_le_read_accept_list_size_sync(struct hci_dev *hdev)
4083 if (!(hdev->commands[26] & 0x40))
4086 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4087 0, NULL, HCI_CMD_TIMEOUT);
4090 /* Clear LE Accept List */
4091 static int hci_le_clear_accept_list_sync(struct hci_dev *hdev)
4093 if (!(hdev->commands[26] & 0x80))
4096 return __hci_cmd_sync_status(hdev, HCI_OP_LE_CLEAR_ACCEPT_LIST, 0, NULL,
4100 /* Read LE Resolving List Size */
4101 static int hci_le_read_resolv_list_size_sync(struct hci_dev *hdev)
4103 if (!(hdev->commands[34] & 0x40))
4106 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_RESOLV_LIST_SIZE,
4107 0, NULL, HCI_CMD_TIMEOUT);
4110 /* Clear LE Resolving List */
4111 static int hci_le_clear_resolv_list_sync(struct hci_dev *hdev)
4113 if (!(hdev->commands[34] & 0x20))
4116 return __hci_cmd_sync_status(hdev, HCI_OP_LE_CLEAR_RESOLV_LIST, 0, NULL,
4120 /* Set RPA timeout */
4121 static int hci_le_set_rpa_timeout_sync(struct hci_dev *hdev)
4123 __le16 timeout = cpu_to_le16(hdev->rpa_timeout);
4125 if (!(hdev->commands[35] & 0x04) ||
4126 test_bit(HCI_QUIRK_BROKEN_SET_RPA_TIMEOUT, &hdev->quirks))
4129 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_RPA_TIMEOUT,
4130 sizeof(timeout), &timeout,
4134 /* Read LE Maximum Data Length */
4135 static int hci_le_read_max_data_len_sync(struct hci_dev *hdev)
4137 if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT))
4140 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL,
4144 /* Read LE Suggested Default Data Length */
4145 static int hci_le_read_def_data_len_sync(struct hci_dev *hdev)
4147 if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT))
4150 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL,
4154 /* Read LE Number of Supported Advertising Sets */
4155 static int hci_le_read_num_support_adv_sets_sync(struct hci_dev *hdev)
4157 if (!ext_adv_capable(hdev))
4160 return __hci_cmd_sync_status(hdev,
4161 HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4162 0, NULL, HCI_CMD_TIMEOUT);
4165 /* Write LE Host Supported */
4166 static int hci_set_le_support_sync(struct hci_dev *hdev)
4168 struct hci_cp_write_le_host_supported cp;
4170 /* LE-only devices do not support explicit enablement */
4171 if (!lmp_bredr_capable(hdev))
4174 memset(&cp, 0, sizeof(cp));
4176 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) {
4181 if (cp.le == lmp_host_le_capable(hdev))
4184 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED,
4185 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4188 /* LE Set Host Feature */
4189 static int hci_le_set_host_feature_sync(struct hci_dev *hdev)
4191 struct hci_cp_le_set_host_feature cp;
4193 if (!iso_capable(hdev))
4196 memset(&cp, 0, sizeof(cp));
4198 /* Isochronous Channels (Host Support) */
4202 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_HOST_FEATURE,
4203 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4206 /* LE Controller init stage 3 command sequence */
4207 static const struct hci_init_stage le_init3[] = {
4208 /* HCI_OP_LE_SET_EVENT_MASK */
4209 HCI_INIT(hci_le_set_event_mask_sync),
4210 /* HCI_OP_LE_READ_ADV_TX_POWER */
4211 HCI_INIT(hci_le_read_adv_tx_power_sync),
4212 /* HCI_OP_LE_READ_TRANSMIT_POWER */
4213 HCI_INIT(hci_le_read_tx_power_sync),
4214 /* HCI_OP_LE_READ_ACCEPT_LIST_SIZE */
4215 HCI_INIT(hci_le_read_accept_list_size_sync),
4216 /* HCI_OP_LE_CLEAR_ACCEPT_LIST */
4217 HCI_INIT(hci_le_clear_accept_list_sync),
4218 /* HCI_OP_LE_READ_RESOLV_LIST_SIZE */
4219 HCI_INIT(hci_le_read_resolv_list_size_sync),
4220 /* HCI_OP_LE_CLEAR_RESOLV_LIST */
4221 HCI_INIT(hci_le_clear_resolv_list_sync),
4222 /* HCI_OP_LE_SET_RPA_TIMEOUT */
4223 HCI_INIT(hci_le_set_rpa_timeout_sync),
4224 /* HCI_OP_LE_READ_MAX_DATA_LEN */
4225 HCI_INIT(hci_le_read_max_data_len_sync),
4226 /* HCI_OP_LE_READ_DEF_DATA_LEN */
4227 HCI_INIT(hci_le_read_def_data_len_sync),
4228 /* HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS */
4229 HCI_INIT(hci_le_read_num_support_adv_sets_sync),
4230 /* HCI_OP_WRITE_LE_HOST_SUPPORTED */
4231 HCI_INIT(hci_set_le_support_sync),
4232 /* HCI_OP_LE_SET_HOST_FEATURE */
4233 HCI_INIT(hci_le_set_host_feature_sync),
4237 static int hci_init3_sync(struct hci_dev *hdev)
4241 bt_dev_dbg(hdev, "");
4243 err = hci_init_stage_sync(hdev, hci_init3);
4247 if (lmp_le_capable(hdev))
4248 return hci_init_stage_sync(hdev, le_init3);
4253 static int hci_delete_stored_link_key_sync(struct hci_dev *hdev)
4255 struct hci_cp_delete_stored_link_key cp;
4257 /* Some Broadcom based Bluetooth controllers do not support the
4258 * Delete Stored Link Key command. They are clearly indicating its
4259 * absence in the bit mask of supported commands.
4261 * Check the supported commands and only if the command is marked
4262 * as supported send it. If not supported assume that the controller
4263 * does not have actual support for stored link keys which makes this
4264 * command redundant anyway.
4266 * Some controllers indicate that they support handling deleting
4267 * stored link keys, but they don't. The quirk lets a driver
4268 * just disable this command.
4270 if (!(hdev->commands[6] & 0x80) ||
4271 test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks))
4274 memset(&cp, 0, sizeof(cp));
4275 bacpy(&cp.bdaddr, BDADDR_ANY);
4276 cp.delete_all = 0x01;
4278 return __hci_cmd_sync_status(hdev, HCI_OP_DELETE_STORED_LINK_KEY,
4279 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4282 static int hci_set_event_mask_page_2_sync(struct hci_dev *hdev)
4284 u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
4285 bool changed = false;
4287 /* Set event mask page 2 if the HCI command for it is supported */
4288 if (!(hdev->commands[22] & 0x04))
4291 /* If Connectionless Peripheral Broadcast central role is supported
4292 * enable all necessary events for it.
4294 if (lmp_cpb_central_capable(hdev)) {
4295 events[1] |= 0x40; /* Triggered Clock Capture */
4296 events[1] |= 0x80; /* Synchronization Train Complete */
4297 events[2] |= 0x08; /* Truncated Page Complete */
4298 events[2] |= 0x20; /* CPB Channel Map Change */
4302 /* If Connectionless Peripheral Broadcast peripheral role is supported
4303 * enable all necessary events for it.
4305 if (lmp_cpb_peripheral_capable(hdev)) {
4306 events[2] |= 0x01; /* Synchronization Train Received */
4307 events[2] |= 0x02; /* CPB Receive */
4308 events[2] |= 0x04; /* CPB Timeout */
4309 events[2] |= 0x10; /* Peripheral Page Response Timeout */
4313 /* Enable Authenticated Payload Timeout Expired event if supported */
4314 if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) {
4319 /* Some Broadcom based controllers indicate support for Set Event
4320 * Mask Page 2 command, but then actually do not support it. Since
4321 * the default value is all bits set to zero, the command is only
4322 * required if the event mask has to be changed. In case no change
4323 * to the event mask is needed, skip this command.
4328 return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_MASK_PAGE_2,
4329 sizeof(events), events, HCI_CMD_TIMEOUT);
4332 /* Read local codec list if the HCI command is supported */
4333 static int hci_read_local_codecs_sync(struct hci_dev *hdev)
4335 if (hdev->commands[45] & 0x04)
4336 hci_read_supported_codecs_v2(hdev);
4337 else if (hdev->commands[29] & 0x20)
4338 hci_read_supported_codecs(hdev);
4343 /* Read local pairing options if the HCI command is supported */
4344 static int hci_read_local_pairing_opts_sync(struct hci_dev *hdev)
4346 if (!(hdev->commands[41] & 0x08))
4349 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_PAIRING_OPTS,
4350 0, NULL, HCI_CMD_TIMEOUT);
4353 /* Get MWS transport configuration if the HCI command is supported */
4354 static int hci_get_mws_transport_config_sync(struct hci_dev *hdev)
4356 if (!mws_transport_config_capable(hdev))
4359 return __hci_cmd_sync_status(hdev, HCI_OP_GET_MWS_TRANSPORT_CONFIG,
4360 0, NULL, HCI_CMD_TIMEOUT);
4363 /* Check for Synchronization Train support */
4364 static int hci_read_sync_train_params_sync(struct hci_dev *hdev)
4366 if (!lmp_sync_train_capable(hdev))
4369 return __hci_cmd_sync_status(hdev, HCI_OP_READ_SYNC_TRAIN_PARAMS,
4370 0, NULL, HCI_CMD_TIMEOUT);
4373 /* Enable Secure Connections if supported and configured */
4374 static int hci_write_sc_support_1_sync(struct hci_dev *hdev)
4378 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED) ||
4379 !bredr_sc_enabled(hdev))
4382 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SC_SUPPORT,
4383 sizeof(support), &support,
4387 /* Set erroneous data reporting if supported to the wideband speech
4390 static int hci_set_err_data_report_sync(struct hci_dev *hdev)
4392 struct hci_cp_write_def_err_data_reporting cp;
4393 bool enabled = hci_dev_test_flag(hdev, HCI_WIDEBAND_SPEECH_ENABLED);
4395 if (!(hdev->commands[18] & 0x08) ||
4396 !(hdev->features[0][6] & LMP_ERR_DATA_REPORTING) ||
4397 test_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks))
4400 if (enabled == hdev->err_data_reporting)
4403 memset(&cp, 0, sizeof(cp));
4404 cp.err_data_reporting = enabled ? ERR_DATA_REPORTING_ENABLED :
4405 ERR_DATA_REPORTING_DISABLED;
4407 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4408 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4411 static const struct hci_init_stage hci_init4[] = {
4412 /* HCI_OP_DELETE_STORED_LINK_KEY */
4413 HCI_INIT(hci_delete_stored_link_key_sync),
4414 /* HCI_OP_SET_EVENT_MASK_PAGE_2 */
4415 HCI_INIT(hci_set_event_mask_page_2_sync),
4416 /* HCI_OP_READ_LOCAL_CODECS */
4417 HCI_INIT(hci_read_local_codecs_sync),
4418 /* HCI_OP_READ_LOCAL_PAIRING_OPTS */
4419 HCI_INIT(hci_read_local_pairing_opts_sync),
4420 /* HCI_OP_GET_MWS_TRANSPORT_CONFIG */
4421 HCI_INIT(hci_get_mws_transport_config_sync),
4422 /* HCI_OP_READ_SYNC_TRAIN_PARAMS */
4423 HCI_INIT(hci_read_sync_train_params_sync),
4424 /* HCI_OP_WRITE_SC_SUPPORT */
4425 HCI_INIT(hci_write_sc_support_1_sync),
4426 /* HCI_OP_WRITE_DEF_ERR_DATA_REPORTING */
4427 HCI_INIT(hci_set_err_data_report_sync),
4431 /* Set Suggested Default Data Length to maximum if supported */
4432 static int hci_le_set_write_def_data_len_sync(struct hci_dev *hdev)
4434 struct hci_cp_le_write_def_data_len cp;
4436 if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT))
4439 memset(&cp, 0, sizeof(cp));
4440 cp.tx_len = cpu_to_le16(hdev->le_max_tx_len);
4441 cp.tx_time = cpu_to_le16(hdev->le_max_tx_time);
4443 return __hci_cmd_sync_status(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN,
4444 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4447 /* Set Default PHY parameters if command is supported, enables all supported
4448 * PHYs according to the LE Features bits.
4450 static int hci_le_set_default_phy_sync(struct hci_dev *hdev)
4452 struct hci_cp_le_set_default_phy cp;
4454 if (!(hdev->commands[35] & 0x20)) {
4455 /* If the command is not supported it means only 1M PHY is
4458 hdev->le_tx_def_phys = HCI_LE_SET_PHY_1M;
4459 hdev->le_rx_def_phys = HCI_LE_SET_PHY_1M;
4463 memset(&cp, 0, sizeof(cp));
4465 cp.tx_phys = HCI_LE_SET_PHY_1M;
4466 cp.rx_phys = HCI_LE_SET_PHY_1M;
4468 /* Enables 2M PHY if supported */
4469 if (le_2m_capable(hdev)) {
4470 cp.tx_phys |= HCI_LE_SET_PHY_2M;
4471 cp.rx_phys |= HCI_LE_SET_PHY_2M;
4474 /* Enables Coded PHY if supported */
4475 if (le_coded_capable(hdev)) {
4476 cp.tx_phys |= HCI_LE_SET_PHY_CODED;
4477 cp.rx_phys |= HCI_LE_SET_PHY_CODED;
4480 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_DEFAULT_PHY,
4481 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4484 static const struct hci_init_stage le_init4[] = {
4485 /* HCI_OP_LE_WRITE_DEF_DATA_LEN */
4486 HCI_INIT(hci_le_set_write_def_data_len_sync),
4487 /* HCI_OP_LE_SET_DEFAULT_PHY */
4488 HCI_INIT(hci_le_set_default_phy_sync),
4492 static int hci_init4_sync(struct hci_dev *hdev)
4496 bt_dev_dbg(hdev, "");
4498 err = hci_init_stage_sync(hdev, hci_init4);
4502 if (lmp_le_capable(hdev))
4503 return hci_init_stage_sync(hdev, le_init4);
4508 static int hci_init_sync(struct hci_dev *hdev)
4512 err = hci_init1_sync(hdev);
4516 if (hci_dev_test_flag(hdev, HCI_SETUP))
4517 hci_debugfs_create_basic(hdev);
4519 err = hci_init2_sync(hdev);
4523 /* HCI_PRIMARY covers both single-mode LE, BR/EDR and dual-mode
4524 * BR/EDR/LE type controllers. AMP controllers only need the
4525 * first two stages of init.
4527 if (hdev->dev_type != HCI_PRIMARY)
4530 err = hci_init3_sync(hdev);
4534 err = hci_init4_sync(hdev);
4538 /* This function is only called when the controller is actually in
4539 * configured state. When the controller is marked as unconfigured,
4540 * this initialization procedure is not run.
4542 * It means that it is possible that a controller runs through its
4543 * setup phase and then discovers missing settings. If that is the
4544 * case, then this function will not be called. It then will only
4545 * be called during the config phase.
4547 * So only when in setup phase or config phase, create the debugfs
4548 * entries and register the SMP channels.
4550 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4551 !hci_dev_test_flag(hdev, HCI_CONFIG))
4554 if (hci_dev_test_and_set_flag(hdev, HCI_DEBUGFS_CREATED))
4557 hci_debugfs_create_common(hdev);
4559 if (lmp_bredr_capable(hdev))
4560 hci_debugfs_create_bredr(hdev);
4562 if (lmp_le_capable(hdev))
4563 hci_debugfs_create_le(hdev);
4568 #define HCI_QUIRK_BROKEN(_quirk, _desc) { HCI_QUIRK_BROKEN_##_quirk, _desc }
4570 static const struct {
4571 unsigned long quirk;
4573 } hci_broken_table[] = {
4574 HCI_QUIRK_BROKEN(LOCAL_COMMANDS,
4575 "HCI Read Local Supported Commands not supported"),
4576 HCI_QUIRK_BROKEN(STORED_LINK_KEY,
4577 "HCI Delete Stored Link Key command is advertised, "
4578 "but not supported."),
4579 HCI_QUIRK_BROKEN(ERR_DATA_REPORTING,
4580 "HCI Read Default Erroneous Data Reporting command is "
4581 "advertised, but not supported."),
4582 HCI_QUIRK_BROKEN(READ_TRANSMIT_POWER,
4583 "HCI Read Transmit Power Level command is advertised, "
4584 "but not supported."),
4585 HCI_QUIRK_BROKEN(FILTER_CLEAR_ALL,
4586 "HCI Set Event Filter command not supported."),
4587 HCI_QUIRK_BROKEN(ENHANCED_SETUP_SYNC_CONN,
4588 "HCI Enhanced Setup Synchronous Connection command is "
4589 "advertised, but not supported."),
4590 HCI_QUIRK_BROKEN(SET_RPA_TIMEOUT,
4591 "HCI LE Set Random Private Address Timeout command is "
4592 "advertised, but not supported.")
4595 /* This function handles hdev setup stage:
4598 * Setup address if HCI_QUIRK_USE_BDADDR_PROPERTY is set.
4600 static int hci_dev_setup_sync(struct hci_dev *hdev)
4603 bool invalid_bdaddr;
4606 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4607 !test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks))
4610 bt_dev_dbg(hdev, "");
4612 hci_sock_dev_event(hdev, HCI_DEV_SETUP);
4615 ret = hdev->setup(hdev);
4617 for (i = 0; i < ARRAY_SIZE(hci_broken_table); i++) {
4618 if (test_bit(hci_broken_table[i].quirk, &hdev->quirks))
4619 bt_dev_warn(hdev, "%s", hci_broken_table[i].desc);
4622 /* The transport driver can set the quirk to mark the
4623 * BD_ADDR invalid before creating the HCI device or in
4624 * its setup callback.
4626 invalid_bdaddr = test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
4629 if (test_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks)) {
4630 if (!bacmp(&hdev->public_addr, BDADDR_ANY))
4631 hci_dev_get_bd_addr_from_property(hdev);
4633 if (bacmp(&hdev->public_addr, BDADDR_ANY) &&
4635 ret = hdev->set_bdaddr(hdev,
4636 &hdev->public_addr);
4638 /* If setting of the BD_ADDR from the device
4639 * property succeeds, then treat the address
4640 * as valid even if the invalid BD_ADDR
4641 * quirk indicates otherwise.
4644 invalid_bdaddr = false;
4649 /* The transport driver can set these quirks before
4650 * creating the HCI device or in its setup callback.
4652 * For the invalid BD_ADDR quirk it is possible that
4653 * it becomes a valid address if the bootloader does
4654 * provide it (see above).
4656 * In case any of them is set, the controller has to
4657 * start up as unconfigured.
4659 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) ||
4661 hci_dev_set_flag(hdev, HCI_UNCONFIGURED);
4663 /* For an unconfigured controller it is required to
4664 * read at least the version information provided by
4665 * the Read Local Version Information command.
4667 * If the set_bdaddr driver callback is provided, then
4668 * also the original Bluetooth public device address
4669 * will be read using the Read BD Address command.
4671 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
4672 return hci_unconf_init_sync(hdev);
4677 /* This function handles hdev init stage:
4679 * Calls hci_dev_setup_sync to perform setup stage
4680 * Calls hci_init_sync to perform HCI command init sequence
4682 static int hci_dev_init_sync(struct hci_dev *hdev)
4686 bt_dev_dbg(hdev, "");
4688 atomic_set(&hdev->cmd_cnt, 1);
4689 set_bit(HCI_INIT, &hdev->flags);
4691 ret = hci_dev_setup_sync(hdev);
4693 if (hci_dev_test_flag(hdev, HCI_CONFIG)) {
4694 /* If public address change is configured, ensure that
4695 * the address gets programmed. If the driver does not
4696 * support changing the public address, fail the power
4699 if (bacmp(&hdev->public_addr, BDADDR_ANY) &&
4701 ret = hdev->set_bdaddr(hdev, &hdev->public_addr);
4703 ret = -EADDRNOTAVAIL;
4707 if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) &&
4708 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
4709 ret = hci_init_sync(hdev);
4710 if (!ret && hdev->post_init)
4711 ret = hdev->post_init(hdev);
4715 /* If the HCI Reset command is clearing all diagnostic settings,
4716 * then they need to be reprogrammed after the init procedure
4719 if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) &&
4720 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4721 hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) && hdev->set_diag)
4722 ret = hdev->set_diag(hdev, true);
4724 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
4729 clear_bit(HCI_INIT, &hdev->flags);
4734 int hci_dev_open_sync(struct hci_dev *hdev)
4738 bt_dev_dbg(hdev, "");
4740 if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) {
4745 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4746 !hci_dev_test_flag(hdev, HCI_CONFIG)) {
4747 /* Check for rfkill but allow the HCI setup stage to
4748 * proceed (which in itself doesn't cause any RF activity).
4750 if (hci_dev_test_flag(hdev, HCI_RFKILLED)) {
4755 /* Check for valid public address or a configured static
4756 * random address, but let the HCI setup proceed to
4757 * be able to determine if there is a public address
4760 * In case of user channel usage, it is not important
4761 * if a public address or static random address is
4764 * This check is only valid for BR/EDR controllers
4765 * since AMP controllers do not have an address.
4767 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4768 hdev->dev_type == HCI_PRIMARY &&
4769 !bacmp(&hdev->bdaddr, BDADDR_ANY) &&
4770 !bacmp(&hdev->static_addr, BDADDR_ANY)) {
4771 ret = -EADDRNOTAVAIL;
4776 if (test_bit(HCI_UP, &hdev->flags)) {
4781 if (hdev->open(hdev)) {
4786 hci_devcd_reset(hdev);
4788 set_bit(HCI_RUNNING, &hdev->flags);
4789 hci_sock_dev_event(hdev, HCI_DEV_OPEN);
4791 ret = hci_dev_init_sync(hdev);
4794 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
4795 hci_adv_instances_set_rpa_expired(hdev, true);
4796 set_bit(HCI_UP, &hdev->flags);
4797 hci_sock_dev_event(hdev, HCI_DEV_UP);
4798 hci_leds_update_powered(hdev, true);
4799 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4800 !hci_dev_test_flag(hdev, HCI_CONFIG) &&
4801 !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) &&
4802 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4803 hci_dev_test_flag(hdev, HCI_MGMT) &&
4804 hdev->dev_type == HCI_PRIMARY) {
4805 ret = hci_powered_update_sync(hdev);
4806 mgmt_power_on(hdev, ret);
4809 /* Init failed, cleanup */
4810 flush_work(&hdev->tx_work);
4812 /* Since hci_rx_work() is possible to awake new cmd_work
4813 * it should be flushed first to avoid unexpected call of
4816 flush_work(&hdev->rx_work);
4817 flush_work(&hdev->cmd_work);
4819 skb_queue_purge(&hdev->cmd_q);
4820 skb_queue_purge(&hdev->rx_q);
4825 if (hdev->sent_cmd) {
4826 cancel_delayed_work_sync(&hdev->cmd_timer);
4827 kfree_skb(hdev->sent_cmd);
4828 hdev->sent_cmd = NULL;
4831 clear_bit(HCI_RUNNING, &hdev->flags);
4832 hci_sock_dev_event(hdev, HCI_DEV_CLOSE);
4835 hdev->flags &= BIT(HCI_RAW);
4842 /* This function requires the caller holds hdev->lock */
4843 static void hci_pend_le_actions_clear(struct hci_dev *hdev)
4845 struct hci_conn_params *p;
4847 list_for_each_entry(p, &hdev->le_conn_params, list) {
4849 hci_conn_drop(p->conn);
4850 hci_conn_put(p->conn);
4853 list_del_init(&p->action);
4856 BT_DBG("All LE pending actions cleared");
4859 static int hci_dev_shutdown(struct hci_dev *hdev)
4862 /* Similar to how we first do setup and then set the exclusive access
4863 * bit for userspace, we must first unset userchannel and then clean up.
4864 * Otherwise, the kernel can't properly use the hci channel to clean up
4865 * the controller (some shutdown routines require sending additional
4866 * commands to the controller for example).
4868 bool was_userchannel =
4869 hci_dev_test_and_clear_flag(hdev, HCI_USER_CHANNEL);
4871 if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) &&
4872 test_bit(HCI_UP, &hdev->flags)) {
4873 /* Execute vendor specific shutdown routine */
4875 err = hdev->shutdown(hdev);
4878 if (was_userchannel)
4879 hci_dev_set_flag(hdev, HCI_USER_CHANNEL);
4884 int hci_dev_close_sync(struct hci_dev *hdev)
4889 bt_dev_dbg(hdev, "");
4891 cancel_delayed_work(&hdev->power_off);
4892 cancel_delayed_work(&hdev->ncmd_timer);
4893 cancel_delayed_work(&hdev->le_scan_disable);
4894 cancel_delayed_work(&hdev->le_scan_restart);
4896 hci_request_cancel_all(hdev);
4898 if (hdev->adv_instance_timeout) {
4899 cancel_delayed_work_sync(&hdev->adv_instance_expire);
4900 hdev->adv_instance_timeout = 0;
4903 err = hci_dev_shutdown(hdev);
4905 if (!test_and_clear_bit(HCI_UP, &hdev->flags)) {
4906 cancel_delayed_work_sync(&hdev->cmd_timer);
4910 hci_leds_update_powered(hdev, false);
4912 /* Flush RX and TX works */
4913 flush_work(&hdev->tx_work);
4914 flush_work(&hdev->rx_work);
4916 if (hdev->discov_timeout > 0) {
4917 hdev->discov_timeout = 0;
4918 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
4919 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
4922 if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE))
4923 cancel_delayed_work(&hdev->service_cache);
4925 if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4926 struct adv_info *adv_instance;
4928 cancel_delayed_work_sync(&hdev->rpa_expired);
4930 list_for_each_entry(adv_instance, &hdev->adv_instances, list)
4931 cancel_delayed_work_sync(&adv_instance->rpa_expired_cb);
4934 /* Avoid potential lockdep warnings from the *_flush() calls by
4935 * ensuring the workqueue is empty up front.
4937 drain_workqueue(hdev->workqueue);
4941 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4943 auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF);
4945 if (!auto_off && hdev->dev_type == HCI_PRIMARY &&
4946 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4947 hci_dev_test_flag(hdev, HCI_MGMT))
4948 __mgmt_power_off(hdev);
4950 hci_inquiry_cache_flush(hdev);
4951 hci_pend_le_actions_clear(hdev);
4952 hci_conn_hash_flush(hdev);
4953 /* Prevent data races on hdev->smp_data or hdev->smp_bredr_data */
4954 smp_unregister(hdev);
4955 hci_dev_unlock(hdev);
4957 hci_sock_dev_event(hdev, HCI_DEV_DOWN);
4959 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
4960 aosp_do_close(hdev);
4961 msft_do_close(hdev);
4968 skb_queue_purge(&hdev->cmd_q);
4969 atomic_set(&hdev->cmd_cnt, 1);
4970 if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) &&
4971 !auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
4972 set_bit(HCI_INIT, &hdev->flags);
4973 hci_reset_sync(hdev);
4974 clear_bit(HCI_INIT, &hdev->flags);
4977 /* flush cmd work */
4978 flush_work(&hdev->cmd_work);
4981 skb_queue_purge(&hdev->rx_q);
4982 skb_queue_purge(&hdev->cmd_q);
4983 skb_queue_purge(&hdev->raw_q);
4985 /* Drop last sent command */
4986 if (hdev->sent_cmd) {
4987 cancel_delayed_work_sync(&hdev->cmd_timer);
4988 kfree_skb(hdev->sent_cmd);
4989 hdev->sent_cmd = NULL;
4992 clear_bit(HCI_RUNNING, &hdev->flags);
4993 hci_sock_dev_event(hdev, HCI_DEV_CLOSE);
4995 /* After this point our queues are empty and no tasks are scheduled. */
4999 hdev->flags &= BIT(HCI_RAW);
5000 hci_dev_clear_volatile_flags(hdev);
5002 /* Controller radio is available but is currently powered down */
5003 hdev->amp_status = AMP_STATUS_POWERED_DOWN;
5005 memset(hdev->eir, 0, sizeof(hdev->eir));
5006 memset(hdev->dev_class, 0, sizeof(hdev->dev_class));
5007 bacpy(&hdev->random_addr, BDADDR_ANY);
5013 /* This function perform power on HCI command sequence as follows:
5015 * If controller is already up (HCI_UP) performs hci_powered_update_sync
5016 * sequence otherwise run hci_dev_open_sync which will follow with
5017 * hci_powered_update_sync after the init sequence is completed.
5019 static int hci_power_on_sync(struct hci_dev *hdev)
5023 if (test_bit(HCI_UP, &hdev->flags) &&
5024 hci_dev_test_flag(hdev, HCI_MGMT) &&
5025 hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) {
5026 cancel_delayed_work(&hdev->power_off);
5027 return hci_powered_update_sync(hdev);
5030 err = hci_dev_open_sync(hdev);
5034 /* During the HCI setup phase, a few error conditions are
5035 * ignored and they need to be checked now. If they are still
5036 * valid, it is important to return the device back off.
5038 if (hci_dev_test_flag(hdev, HCI_RFKILLED) ||
5039 hci_dev_test_flag(hdev, HCI_UNCONFIGURED) ||
5040 (hdev->dev_type == HCI_PRIMARY &&
5041 !bacmp(&hdev->bdaddr, BDADDR_ANY) &&
5042 !bacmp(&hdev->static_addr, BDADDR_ANY))) {
5043 hci_dev_clear_flag(hdev, HCI_AUTO_OFF);
5044 hci_dev_close_sync(hdev);
5045 } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) {
5046 queue_delayed_work(hdev->req_workqueue, &hdev->power_off,
5047 HCI_AUTO_OFF_TIMEOUT);
5050 if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) {
5051 /* For unconfigured devices, set the HCI_RAW flag
5052 * so that userspace can easily identify them.
5054 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
5055 set_bit(HCI_RAW, &hdev->flags);
5057 /* For fully configured devices, this will send
5058 * the Index Added event. For unconfigured devices,
5059 * it will send Unconfigued Index Added event.
5061 * Devices with HCI_QUIRK_RAW_DEVICE are ignored
5062 * and no event will be send.
5064 mgmt_index_added(hdev);
5065 } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) {
5066 /* When the controller is now configured, then it
5067 * is important to clear the HCI_RAW flag.
5069 if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
5070 clear_bit(HCI_RAW, &hdev->flags);
5072 /* Powering on the controller with HCI_CONFIG set only
5073 * happens with the transition from unconfigured to
5074 * configured. This will send the Index Added event.
5076 mgmt_index_added(hdev);
5082 static int hci_remote_name_cancel_sync(struct hci_dev *hdev, bdaddr_t *addr)
5084 struct hci_cp_remote_name_req_cancel cp;
5086 memset(&cp, 0, sizeof(cp));
5087 bacpy(&cp.bdaddr, addr);
5089 return __hci_cmd_sync_status(hdev, HCI_OP_REMOTE_NAME_REQ_CANCEL,
5090 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5093 int hci_stop_discovery_sync(struct hci_dev *hdev)
5095 struct discovery_state *d = &hdev->discovery;
5096 struct inquiry_entry *e;
5099 bt_dev_dbg(hdev, "state %u", hdev->discovery.state);
5101 if (d->state == DISCOVERY_FINDING || d->state == DISCOVERY_STOPPING) {
5102 if (test_bit(HCI_INQUIRY, &hdev->flags)) {
5103 err = __hci_cmd_sync_status(hdev, HCI_OP_INQUIRY_CANCEL,
5104 0, NULL, HCI_CMD_TIMEOUT);
5109 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
5110 cancel_delayed_work(&hdev->le_scan_disable);
5111 cancel_delayed_work(&hdev->le_scan_restart);
5113 err = hci_scan_disable_sync(hdev);
5119 err = hci_scan_disable_sync(hdev);
5124 /* Resume advertising if it was paused */
5125 if (use_ll_privacy(hdev))
5126 hci_resume_advertising_sync(hdev);
5128 /* No further actions needed for LE-only discovery */
5129 if (d->type == DISCOV_TYPE_LE)
5132 if (d->state == DISCOVERY_RESOLVING || d->state == DISCOVERY_STOPPING) {
5133 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY,
5138 return hci_remote_name_cancel_sync(hdev, &e->data.bdaddr);
5144 static int hci_disconnect_phy_link_sync(struct hci_dev *hdev, u16 handle,
5147 struct hci_cp_disconn_phy_link cp;
5149 memset(&cp, 0, sizeof(cp));
5150 cp.phy_handle = HCI_PHY_HANDLE(handle);
5153 return __hci_cmd_sync_status(hdev, HCI_OP_DISCONN_PHY_LINK,
5154 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5157 static int hci_disconnect_sync(struct hci_dev *hdev, struct hci_conn *conn,
5160 struct hci_cp_disconnect cp;
5162 if (conn->type == AMP_LINK)
5163 return hci_disconnect_phy_link_sync(hdev, conn->handle, reason);
5165 memset(&cp, 0, sizeof(cp));
5166 cp.handle = cpu_to_le16(conn->handle);
5169 /* Wait for HCI_EV_DISCONN_COMPLETE, not HCI_EV_CMD_STATUS, when the
5170 * reason is anything but HCI_ERROR_REMOTE_POWER_OFF. This reason is
5171 * used when suspending or powering off, where we don't want to wait
5172 * for the peer's response.
5174 if (reason != HCI_ERROR_REMOTE_POWER_OFF)
5175 return __hci_cmd_sync_status_sk(hdev, HCI_OP_DISCONNECT,
5177 HCI_EV_DISCONN_COMPLETE,
5178 HCI_CMD_TIMEOUT, NULL);
5180 return __hci_cmd_sync_status(hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp,
5184 static int hci_le_connect_cancel_sync(struct hci_dev *hdev,
5185 struct hci_conn *conn)
5187 if (test_bit(HCI_CONN_SCANNING, &conn->flags))
5190 if (test_and_set_bit(HCI_CONN_CANCEL, &conn->flags))
5193 return __hci_cmd_sync_status(hdev, HCI_OP_LE_CREATE_CONN_CANCEL,
5194 0, NULL, HCI_CMD_TIMEOUT);
5197 static int hci_connect_cancel_sync(struct hci_dev *hdev, struct hci_conn *conn)
5199 if (conn->type == LE_LINK)
5200 return hci_le_connect_cancel_sync(hdev, conn);
5202 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
5205 return __hci_cmd_sync_status(hdev, HCI_OP_CREATE_CONN_CANCEL,
5206 6, &conn->dst, HCI_CMD_TIMEOUT);
5209 static int hci_reject_sco_sync(struct hci_dev *hdev, struct hci_conn *conn,
5212 struct hci_cp_reject_sync_conn_req cp;
5214 memset(&cp, 0, sizeof(cp));
5215 bacpy(&cp.bdaddr, &conn->dst);
5218 /* SCO rejection has its own limited set of
5219 * allowed error values (0x0D-0x0F).
5221 if (reason < 0x0d || reason > 0x0f)
5222 cp.reason = HCI_ERROR_REJ_LIMITED_RESOURCES;
5224 return __hci_cmd_sync_status(hdev, HCI_OP_REJECT_SYNC_CONN_REQ,
5225 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5228 static int hci_reject_conn_sync(struct hci_dev *hdev, struct hci_conn *conn,
5231 struct hci_cp_reject_conn_req cp;
5233 if (conn->type == SCO_LINK || conn->type == ESCO_LINK)
5234 return hci_reject_sco_sync(hdev, conn, reason);
5236 memset(&cp, 0, sizeof(cp));
5237 bacpy(&cp.bdaddr, &conn->dst);
5240 return __hci_cmd_sync_status(hdev, HCI_OP_REJECT_CONN_REQ,
5241 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5244 int hci_abort_conn_sync(struct hci_dev *hdev, struct hci_conn *conn, u8 reason)
5248 switch (conn->state) {
5251 return hci_disconnect_sync(hdev, conn, reason);
5253 err = hci_connect_cancel_sync(hdev, conn);
5254 /* Cleanup hci_conn object if it cannot be cancelled as it
5255 * likelly means the controller and host stack are out of sync.
5259 hci_conn_failed(conn, err);
5260 hci_dev_unlock(hdev);
5264 return hci_reject_conn_sync(hdev, conn, reason);
5266 conn->state = BT_CLOSED;
5273 static int hci_disconnect_all_sync(struct hci_dev *hdev, u8 reason)
5275 struct hci_conn *conn, *tmp;
5278 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
5279 err = hci_abort_conn_sync(hdev, conn, reason);
5287 /* This function perform power off HCI command sequence as follows:
5291 * Disconnect all connections
5292 * hci_dev_close_sync
5294 static int hci_power_off_sync(struct hci_dev *hdev)
5298 /* If controller is already down there is nothing to do */
5299 if (!test_bit(HCI_UP, &hdev->flags))
5302 if (test_bit(HCI_ISCAN, &hdev->flags) ||
5303 test_bit(HCI_PSCAN, &hdev->flags)) {
5304 err = hci_write_scan_enable_sync(hdev, 0x00);
5309 err = hci_clear_adv_sync(hdev, NULL, false);
5313 err = hci_stop_discovery_sync(hdev);
5317 /* Terminated due to Power Off */
5318 err = hci_disconnect_all_sync(hdev, HCI_ERROR_REMOTE_POWER_OFF);
5322 return hci_dev_close_sync(hdev);
5325 int hci_set_powered_sync(struct hci_dev *hdev, u8 val)
5328 return hci_power_on_sync(hdev);
5330 return hci_power_off_sync(hdev);
5333 static int hci_write_iac_sync(struct hci_dev *hdev)
5335 struct hci_cp_write_current_iac_lap cp;
5337 if (!hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
5340 memset(&cp, 0, sizeof(cp));
5342 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) {
5343 /* Limited discoverable mode */
5344 cp.num_iac = min_t(u8, hdev->num_iac, 2);
5345 cp.iac_lap[0] = 0x00; /* LIAC */
5346 cp.iac_lap[1] = 0x8b;
5347 cp.iac_lap[2] = 0x9e;
5348 cp.iac_lap[3] = 0x33; /* GIAC */
5349 cp.iac_lap[4] = 0x8b;
5350 cp.iac_lap[5] = 0x9e;
5352 /* General discoverable mode */
5354 cp.iac_lap[0] = 0x33; /* GIAC */
5355 cp.iac_lap[1] = 0x8b;
5356 cp.iac_lap[2] = 0x9e;
5359 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CURRENT_IAC_LAP,
5360 (cp.num_iac * 3) + 1, &cp,
5364 int hci_update_discoverable_sync(struct hci_dev *hdev)
5368 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
5369 err = hci_write_iac_sync(hdev);
5373 err = hci_update_scan_sync(hdev);
5377 err = hci_update_class_sync(hdev);
5382 /* Advertising instances don't use the global discoverable setting, so
5383 * only update AD if advertising was enabled using Set Advertising.
5385 if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) {
5386 err = hci_update_adv_data_sync(hdev, 0x00);
5390 /* Discoverable mode affects the local advertising
5391 * address in limited privacy mode.
5393 if (hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY)) {
5394 if (ext_adv_capable(hdev))
5395 err = hci_start_ext_adv_sync(hdev, 0x00);
5397 err = hci_enable_advertising_sync(hdev);
5404 static int update_discoverable_sync(struct hci_dev *hdev, void *data)
5406 return hci_update_discoverable_sync(hdev);
5409 int hci_update_discoverable(struct hci_dev *hdev)
5411 /* Only queue if it would have any effect */
5412 if (hdev_is_powered(hdev) &&
5413 hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
5414 hci_dev_test_flag(hdev, HCI_DISCOVERABLE) &&
5415 hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY))
5416 return hci_cmd_sync_queue(hdev, update_discoverable_sync, NULL,
5422 int hci_update_connectable_sync(struct hci_dev *hdev)
5426 err = hci_update_scan_sync(hdev);
5430 /* If BR/EDR is not enabled and we disable advertising as a
5431 * by-product of disabling connectable, we need to update the
5432 * advertising flags.
5434 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
5435 err = hci_update_adv_data_sync(hdev, hdev->cur_adv_instance);
5437 /* Update the advertising parameters if necessary */
5438 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
5439 !list_empty(&hdev->adv_instances)) {
5440 if (ext_adv_capable(hdev))
5441 err = hci_start_ext_adv_sync(hdev,
5442 hdev->cur_adv_instance);
5444 err = hci_enable_advertising_sync(hdev);
5450 return hci_update_passive_scan_sync(hdev);
5453 static int hci_inquiry_sync(struct hci_dev *hdev, u8 length)
5455 const u8 giac[3] = { 0x33, 0x8b, 0x9e };
5456 const u8 liac[3] = { 0x00, 0x8b, 0x9e };
5457 struct hci_cp_inquiry cp;
5459 bt_dev_dbg(hdev, "");
5461 if (hci_dev_test_flag(hdev, HCI_INQUIRY))
5465 hci_inquiry_cache_flush(hdev);
5466 hci_dev_unlock(hdev);
5468 memset(&cp, 0, sizeof(cp));
5470 if (hdev->discovery.limited)
5471 memcpy(&cp.lap, liac, sizeof(cp.lap));
5473 memcpy(&cp.lap, giac, sizeof(cp.lap));
5477 return __hci_cmd_sync_status(hdev, HCI_OP_INQUIRY,
5478 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5481 static int hci_active_scan_sync(struct hci_dev *hdev, uint16_t interval)
5484 /* Accept list is not used for discovery */
5485 u8 filter_policy = 0x00;
5486 /* Default is to enable duplicates filter */
5487 u8 filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
5490 bt_dev_dbg(hdev, "");
5492 /* If controller is scanning, it means the passive scanning is
5493 * running. Thus, we should temporarily stop it in order to set the
5494 * discovery scanning parameters.
5496 err = hci_scan_disable_sync(hdev);
5498 bt_dev_err(hdev, "Unable to disable scanning: %d", err);
5502 cancel_interleave_scan(hdev);
5504 /* Pause address resolution for active scan and stop advertising if
5505 * privacy is enabled.
5507 err = hci_pause_addr_resolution(hdev);
5511 /* All active scans will be done with either a resolvable private
5512 * address (when privacy feature has been enabled) or non-resolvable
5515 err = hci_update_random_address_sync(hdev, true, scan_use_rpa(hdev),
5518 own_addr_type = ADDR_LE_DEV_PUBLIC;
5520 if (hci_is_adv_monitoring(hdev)) {
5521 /* Duplicate filter should be disabled when some advertisement
5522 * monitor is activated, otherwise AdvMon can only receive one
5523 * advertisement for one peer(*) during active scanning, and
5524 * might report loss to these peers.
5526 * Note that different controllers have different meanings of
5527 * |duplicate|. Some of them consider packets with the same
5528 * address as duplicate, and others consider packets with the
5529 * same address and the same RSSI as duplicate. Although in the
5530 * latter case we don't need to disable duplicate filter, but
5531 * it is common to have active scanning for a short period of
5532 * time, the power impact should be neglectable.
5534 filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
5537 err = hci_start_scan_sync(hdev, LE_SCAN_ACTIVE, interval,
5538 hdev->le_scan_window_discovery,
5539 own_addr_type, filter_policy, filter_dup);
5544 /* Resume advertising if it was paused */
5545 if (use_ll_privacy(hdev))
5546 hci_resume_advertising_sync(hdev);
5548 /* Resume passive scanning */
5549 hci_update_passive_scan_sync(hdev);
5553 static int hci_start_interleaved_discovery_sync(struct hci_dev *hdev)
5557 bt_dev_dbg(hdev, "");
5559 err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery * 2);
5563 return hci_inquiry_sync(hdev, DISCOV_BREDR_INQUIRY_LEN);
5566 int hci_start_discovery_sync(struct hci_dev *hdev)
5568 unsigned long timeout;
5571 bt_dev_dbg(hdev, "type %u", hdev->discovery.type);
5573 switch (hdev->discovery.type) {
5574 case DISCOV_TYPE_BREDR:
5575 return hci_inquiry_sync(hdev, DISCOV_BREDR_INQUIRY_LEN);
5576 case DISCOV_TYPE_INTERLEAVED:
5577 /* When running simultaneous discovery, the LE scanning time
5578 * should occupy the whole discovery time sine BR/EDR inquiry
5579 * and LE scanning are scheduled by the controller.
5581 * For interleaving discovery in comparison, BR/EDR inquiry
5582 * and LE scanning are done sequentially with separate
5585 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY,
5587 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
5588 /* During simultaneous discovery, we double LE scan
5589 * interval. We must leave some time for the controller
5590 * to do BR/EDR inquiry.
5592 err = hci_start_interleaved_discovery_sync(hdev);
5596 timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout);
5597 err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery);
5599 case DISCOV_TYPE_LE:
5600 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
5601 err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery);
5610 bt_dev_dbg(hdev, "timeout %u ms", jiffies_to_msecs(timeout));
5612 /* When service discovery is used and the controller has a
5613 * strict duplicate filter, it is important to remember the
5614 * start and duration of the scan. This is required for
5615 * restarting scanning during the discovery phase.
5617 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) &&
5618 hdev->discovery.result_filtering) {
5619 hdev->discovery.scan_start = jiffies;
5620 hdev->discovery.scan_duration = timeout;
5623 queue_delayed_work(hdev->req_workqueue, &hdev->le_scan_disable,
5628 static void hci_suspend_monitor_sync(struct hci_dev *hdev)
5630 switch (hci_get_adv_monitor_offload_ext(hdev)) {
5631 case HCI_ADV_MONITOR_EXT_MSFT:
5632 msft_suspend_sync(hdev);
5639 /* This function disables discovery and mark it as paused */
5640 static int hci_pause_discovery_sync(struct hci_dev *hdev)
5642 int old_state = hdev->discovery.state;
5645 /* If discovery already stopped/stopping/paused there nothing to do */
5646 if (old_state == DISCOVERY_STOPPED || old_state == DISCOVERY_STOPPING ||
5647 hdev->discovery_paused)
5650 hci_discovery_set_state(hdev, DISCOVERY_STOPPING);
5651 err = hci_stop_discovery_sync(hdev);
5655 hdev->discovery_paused = true;
5656 hdev->discovery_old_state = old_state;
5657 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
5662 static int hci_update_event_filter_sync(struct hci_dev *hdev)
5664 struct bdaddr_list_with_flags *b;
5665 u8 scan = SCAN_DISABLED;
5666 bool scanning = test_bit(HCI_PSCAN, &hdev->flags);
5669 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
5672 /* Some fake CSR controllers lock up after setting this type of
5673 * filter, so avoid sending the request altogether.
5675 if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks))
5678 /* Always clear event filter when starting */
5679 hci_clear_event_filter_sync(hdev);
5681 list_for_each_entry(b, &hdev->accept_list, list) {
5682 if (!(b->flags & HCI_CONN_FLAG_REMOTE_WAKEUP))
5685 bt_dev_dbg(hdev, "Adding event filters for %pMR", &b->bdaddr);
5687 err = hci_set_event_filter_sync(hdev, HCI_FLT_CONN_SETUP,
5688 HCI_CONN_SETUP_ALLOW_BDADDR,
5690 HCI_CONN_SETUP_AUTO_ON);
5692 bt_dev_dbg(hdev, "Failed to set event filter for %pMR",
5698 if (scan && !scanning)
5699 hci_write_scan_enable_sync(hdev, scan);
5700 else if (!scan && scanning)
5701 hci_write_scan_enable_sync(hdev, scan);
5706 /* This function disables scan (BR and LE) and mark it as paused */
5707 static int hci_pause_scan_sync(struct hci_dev *hdev)
5709 if (hdev->scanning_paused)
5712 /* Disable page scan if enabled */
5713 if (test_bit(HCI_PSCAN, &hdev->flags))
5714 hci_write_scan_enable_sync(hdev, SCAN_DISABLED);
5716 hci_scan_disable_sync(hdev);
5718 hdev->scanning_paused = true;
5723 /* This function performs the HCI suspend procedures in the follow order:
5725 * Pause discovery (active scanning/inquiry)
5726 * Pause Directed Advertising/Advertising
5727 * Pause Scanning (passive scanning in case discovery was not active)
5728 * Disconnect all connections
5729 * Set suspend_status to BT_SUSPEND_DISCONNECT if hdev cannot wakeup
5731 * Update event mask (only set events that are allowed to wake up the host)
5732 * Update event filter (with devices marked with HCI_CONN_FLAG_REMOTE_WAKEUP)
5733 * Update passive scanning (lower duty cycle)
5734 * Set suspend_status to BT_SUSPEND_CONFIGURE_WAKE
5736 int hci_suspend_sync(struct hci_dev *hdev)
5740 /* If marked as suspended there nothing to do */
5741 if (hdev->suspended)
5744 /* Mark device as suspended */
5745 hdev->suspended = true;
5747 /* Pause discovery if not already stopped */
5748 hci_pause_discovery_sync(hdev);
5750 /* Pause other advertisements */
5751 hci_pause_advertising_sync(hdev);
5753 /* Suspend monitor filters */
5754 hci_suspend_monitor_sync(hdev);
5756 /* Prevent disconnects from causing scanning to be re-enabled */
5757 hci_pause_scan_sync(hdev);
5759 if (hci_conn_count(hdev)) {
5760 /* Soft disconnect everything (power off) */
5761 err = hci_disconnect_all_sync(hdev, HCI_ERROR_REMOTE_POWER_OFF);
5763 /* Set state to BT_RUNNING so resume doesn't notify */
5764 hdev->suspend_state = BT_RUNNING;
5765 hci_resume_sync(hdev);
5769 /* Update event mask so only the allowed event can wakeup the
5772 hci_set_event_mask_sync(hdev);
5775 /* Only configure accept list if disconnect succeeded and wake
5776 * isn't being prevented.
5778 if (!hdev->wakeup || !hdev->wakeup(hdev)) {
5779 hdev->suspend_state = BT_SUSPEND_DISCONNECT;
5783 /* Unpause to take care of updating scanning params */
5784 hdev->scanning_paused = false;
5786 /* Enable event filter for paired devices */
5787 hci_update_event_filter_sync(hdev);
5789 /* Update LE passive scan if enabled */
5790 hci_update_passive_scan_sync(hdev);
5792 /* Pause scan changes again. */
5793 hdev->scanning_paused = true;
5795 hdev->suspend_state = BT_SUSPEND_CONFIGURE_WAKE;
5800 /* This function resumes discovery */
5801 static int hci_resume_discovery_sync(struct hci_dev *hdev)
5805 /* If discovery not paused there nothing to do */
5806 if (!hdev->discovery_paused)
5809 hdev->discovery_paused = false;
5811 hci_discovery_set_state(hdev, DISCOVERY_STARTING);
5813 err = hci_start_discovery_sync(hdev);
5815 hci_discovery_set_state(hdev, err ? DISCOVERY_STOPPED :
5821 static void hci_resume_monitor_sync(struct hci_dev *hdev)
5823 switch (hci_get_adv_monitor_offload_ext(hdev)) {
5824 case HCI_ADV_MONITOR_EXT_MSFT:
5825 msft_resume_sync(hdev);
5832 /* This function resume scan and reset paused flag */
5833 static int hci_resume_scan_sync(struct hci_dev *hdev)
5835 if (!hdev->scanning_paused)
5838 hdev->scanning_paused = false;
5840 hci_update_scan_sync(hdev);
5842 /* Reset passive scanning to normal */
5843 hci_update_passive_scan_sync(hdev);
5848 /* This function performs the HCI suspend procedures in the follow order:
5850 * Restore event mask
5851 * Clear event filter
5852 * Update passive scanning (normal duty cycle)
5853 * Resume Directed Advertising/Advertising
5854 * Resume discovery (active scanning/inquiry)
5856 int hci_resume_sync(struct hci_dev *hdev)
5858 /* If not marked as suspended there nothing to do */
5859 if (!hdev->suspended)
5862 hdev->suspended = false;
5864 /* Restore event mask */
5865 hci_set_event_mask_sync(hdev);
5867 /* Clear any event filters and restore scan state */
5868 hci_clear_event_filter_sync(hdev);
5870 /* Resume scanning */
5871 hci_resume_scan_sync(hdev);
5873 /* Resume monitor filters */
5874 hci_resume_monitor_sync(hdev);
5876 /* Resume other advertisements */
5877 hci_resume_advertising_sync(hdev);
5879 /* Resume discovery */
5880 hci_resume_discovery_sync(hdev);
5885 static bool conn_use_rpa(struct hci_conn *conn)
5887 struct hci_dev *hdev = conn->hdev;
5889 return hci_dev_test_flag(hdev, HCI_PRIVACY);
5892 static int hci_le_ext_directed_advertising_sync(struct hci_dev *hdev,
5893 struct hci_conn *conn)
5895 struct hci_cp_le_set_ext_adv_params cp;
5897 bdaddr_t random_addr;
5900 err = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn),
5905 /* Set require_privacy to false so that the remote device has a
5906 * chance of identifying us.
5908 err = hci_get_random_address(hdev, false, conn_use_rpa(conn), NULL,
5909 &own_addr_type, &random_addr);
5913 memset(&cp, 0, sizeof(cp));
5915 cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_DIRECT_IND);
5916 cp.channel_map = hdev->le_adv_channel_map;
5917 cp.tx_power = HCI_TX_POWER_INVALID;
5918 cp.primary_phy = HCI_ADV_PHY_1M;
5919 cp.secondary_phy = HCI_ADV_PHY_1M;
5920 cp.handle = 0x00; /* Use instance 0 for directed adv */
5921 cp.own_addr_type = own_addr_type;
5922 cp.peer_addr_type = conn->dst_type;
5923 bacpy(&cp.peer_addr, &conn->dst);
5925 /* As per Core Spec 5.2 Vol 2, PART E, Sec 7.8.53, for
5926 * advertising_event_property LE_LEGACY_ADV_DIRECT_IND
5927 * does not supports advertising data when the advertising set already
5928 * contains some, the controller shall return erroc code 'Invalid
5929 * HCI Command Parameters(0x12).
5930 * So it is required to remove adv set for handle 0x00. since we use
5931 * instance 0 for directed adv.
5933 err = hci_remove_ext_adv_instance_sync(hdev, cp.handle, NULL);
5937 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS,
5938 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5942 /* Check if random address need to be updated */
5943 if (own_addr_type == ADDR_LE_DEV_RANDOM &&
5944 bacmp(&random_addr, BDADDR_ANY) &&
5945 bacmp(&random_addr, &hdev->random_addr)) {
5946 err = hci_set_adv_set_random_addr_sync(hdev, 0x00,
5952 return hci_enable_ext_advertising_sync(hdev, 0x00);
5955 static int hci_le_directed_advertising_sync(struct hci_dev *hdev,
5956 struct hci_conn *conn)
5958 struct hci_cp_le_set_adv_param cp;
5963 if (ext_adv_capable(hdev))
5964 return hci_le_ext_directed_advertising_sync(hdev, conn);
5966 /* Clear the HCI_LE_ADV bit temporarily so that the
5967 * hci_update_random_address knows that it's safe to go ahead
5968 * and write a new random address. The flag will be set back on
5969 * as soon as the SET_ADV_ENABLE HCI command completes.
5971 hci_dev_clear_flag(hdev, HCI_LE_ADV);
5973 /* Set require_privacy to false so that the remote device has a
5974 * chance of identifying us.
5976 status = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn),
5981 memset(&cp, 0, sizeof(cp));
5983 /* Some controllers might reject command if intervals are not
5984 * within range for undirected advertising.
5985 * BCM20702A0 is known to be affected by this.
5987 cp.min_interval = cpu_to_le16(0x0020);
5988 cp.max_interval = cpu_to_le16(0x0020);
5990 cp.type = LE_ADV_DIRECT_IND;
5991 cp.own_address_type = own_addr_type;
5992 cp.direct_addr_type = conn->dst_type;
5993 bacpy(&cp.direct_addr, &conn->dst);
5994 cp.channel_map = hdev->le_adv_channel_map;
5996 status = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_PARAM,
5997 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
6003 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
6004 sizeof(enable), &enable, HCI_CMD_TIMEOUT);
6007 static void set_ext_conn_params(struct hci_conn *conn,
6008 struct hci_cp_le_ext_conn_param *p)
6010 struct hci_dev *hdev = conn->hdev;
6012 memset(p, 0, sizeof(*p));
6014 p->scan_interval = cpu_to_le16(hdev->le_scan_int_connect);
6015 p->scan_window = cpu_to_le16(hdev->le_scan_window_connect);
6016 p->conn_interval_min = cpu_to_le16(conn->le_conn_min_interval);
6017 p->conn_interval_max = cpu_to_le16(conn->le_conn_max_interval);
6018 p->conn_latency = cpu_to_le16(conn->le_conn_latency);
6019 p->supervision_timeout = cpu_to_le16(conn->le_supv_timeout);
6020 p->min_ce_len = cpu_to_le16(0x0000);
6021 p->max_ce_len = cpu_to_le16(0x0000);
6024 static int hci_le_ext_create_conn_sync(struct hci_dev *hdev,
6025 struct hci_conn *conn, u8 own_addr_type)
6027 struct hci_cp_le_ext_create_conn *cp;
6028 struct hci_cp_le_ext_conn_param *p;
6029 u8 data[sizeof(*cp) + sizeof(*p) * 3];
6033 p = (void *)cp->data;
6035 memset(cp, 0, sizeof(*cp));
6037 bacpy(&cp->peer_addr, &conn->dst);
6038 cp->peer_addr_type = conn->dst_type;
6039 cp->own_addr_type = own_addr_type;
6043 if (scan_1m(hdev)) {
6044 cp->phys |= LE_SCAN_PHY_1M;
6045 set_ext_conn_params(conn, p);
6051 if (scan_2m(hdev)) {
6052 cp->phys |= LE_SCAN_PHY_2M;
6053 set_ext_conn_params(conn, p);
6059 if (scan_coded(hdev)) {
6060 cp->phys |= LE_SCAN_PHY_CODED;
6061 set_ext_conn_params(conn, p);
6066 return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_EXT_CREATE_CONN,
6068 HCI_EV_LE_ENHANCED_CONN_COMPLETE,
6069 conn->conn_timeout, NULL);
6072 int hci_le_create_conn_sync(struct hci_dev *hdev, struct hci_conn *conn)
6074 struct hci_cp_le_create_conn cp;
6075 struct hci_conn_params *params;
6079 /* If requested to connect as peripheral use directed advertising */
6080 if (conn->role == HCI_ROLE_SLAVE) {
6081 /* If we're active scanning and simultaneous roles is not
6082 * enabled simply reject the attempt.
6084 if (hci_dev_test_flag(hdev, HCI_LE_SCAN) &&
6085 hdev->le_scan_type == LE_SCAN_ACTIVE &&
6086 !hci_dev_test_flag(hdev, HCI_LE_SIMULTANEOUS_ROLES)) {
6091 /* Pause advertising while doing directed advertising. */
6092 hci_pause_advertising_sync(hdev);
6094 err = hci_le_directed_advertising_sync(hdev, conn);
6098 /* Disable advertising if simultaneous roles is not in use. */
6099 if (!hci_dev_test_flag(hdev, HCI_LE_SIMULTANEOUS_ROLES))
6100 hci_pause_advertising_sync(hdev);
6102 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
6104 conn->le_conn_min_interval = params->conn_min_interval;
6105 conn->le_conn_max_interval = params->conn_max_interval;
6106 conn->le_conn_latency = params->conn_latency;
6107 conn->le_supv_timeout = params->supervision_timeout;
6109 conn->le_conn_min_interval = hdev->le_conn_min_interval;
6110 conn->le_conn_max_interval = hdev->le_conn_max_interval;
6111 conn->le_conn_latency = hdev->le_conn_latency;
6112 conn->le_supv_timeout = hdev->le_supv_timeout;
6115 /* If controller is scanning, we stop it since some controllers are
6116 * not able to scan and connect at the same time. Also set the
6117 * HCI_LE_SCAN_INTERRUPTED flag so that the command complete
6118 * handler for scan disabling knows to set the correct discovery
6121 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
6122 hci_scan_disable_sync(hdev);
6123 hci_dev_set_flag(hdev, HCI_LE_SCAN_INTERRUPTED);
6126 /* Update random address, but set require_privacy to false so
6127 * that we never connect with an non-resolvable address.
6129 err = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn),
6134 if (use_ext_conn(hdev)) {
6135 err = hci_le_ext_create_conn_sync(hdev, conn, own_addr_type);
6139 memset(&cp, 0, sizeof(cp));
6141 cp.scan_interval = cpu_to_le16(hdev->le_scan_int_connect);
6142 cp.scan_window = cpu_to_le16(hdev->le_scan_window_connect);
6144 bacpy(&cp.peer_addr, &conn->dst);
6145 cp.peer_addr_type = conn->dst_type;
6146 cp.own_address_type = own_addr_type;
6147 cp.conn_interval_min = cpu_to_le16(conn->le_conn_min_interval);
6148 cp.conn_interval_max = cpu_to_le16(conn->le_conn_max_interval);
6149 cp.conn_latency = cpu_to_le16(conn->le_conn_latency);
6150 cp.supervision_timeout = cpu_to_le16(conn->le_supv_timeout);
6151 cp.min_ce_len = cpu_to_le16(0x0000);
6152 cp.max_ce_len = cpu_to_le16(0x0000);
6154 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2261:
6156 * If this event is unmasked and the HCI_LE_Connection_Complete event
6157 * is unmasked, only the HCI_LE_Enhanced_Connection_Complete event is
6158 * sent when a new connection has been created.
6160 err = __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_CREATE_CONN,
6162 use_enhanced_conn_complete(hdev) ?
6163 HCI_EV_LE_ENHANCED_CONN_COMPLETE :
6164 HCI_EV_LE_CONN_COMPLETE,
6165 conn->conn_timeout, NULL);
6168 if (err == -ETIMEDOUT)
6169 hci_le_connect_cancel_sync(hdev, conn);
6171 /* Re-enable advertising after the connection attempt is finished. */
6172 hci_resume_advertising_sync(hdev);
6176 int hci_le_create_cis_sync(struct hci_dev *hdev, struct hci_conn *conn)
6179 struct hci_cp_le_create_cis cp;
6180 struct hci_cis cis[0x1f];
6183 struct hci_conn *hcon = conn;
6185 memset(&cmd, 0, sizeof(cmd));
6186 cmd.cis[0].acl_handle = cpu_to_le16(conn->parent->handle);
6187 cmd.cis[0].cis_handle = cpu_to_le16(conn->handle);
6189 cig = conn->iso_qos.ucast.cig;
6195 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
6196 struct hci_cis *cis = &cmd.cis[cmd.cp.num_cis];
6198 if (conn == hcon || conn->type != ISO_LINK ||
6199 conn->state == BT_CONNECTED ||
6200 conn->iso_qos.ucast.cig != cig)
6203 /* Check if all CIS(s) belonging to a CIG are ready */
6204 if (!conn->parent || conn->parent->state != BT_CONNECTED ||
6205 conn->state != BT_CONNECT) {
6210 /* Group all CIS with state BT_CONNECT since the spec don't
6211 * allow to send them individually:
6213 * BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E
6216 * If the Host issues this command before all the
6217 * HCI_LE_CIS_Established events from the previous use of the
6218 * command have been generated, the Controller shall return the
6219 * error code Command Disallowed (0x0C).
6221 cis->acl_handle = cpu_to_le16(conn->parent->handle);
6222 cis->cis_handle = cpu_to_le16(conn->handle);
6228 hci_dev_unlock(hdev);
6230 if (!cmd.cp.num_cis)
6233 /* Wait for HCI_LE_CIS_Established */
6234 return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_CREATE_CIS,
6235 sizeof(cmd.cp) + sizeof(cmd.cis[0]) *
6236 cmd.cp.num_cis, &cmd,
6237 HCI_EVT_LE_CIS_ESTABLISHED,
6238 conn->conn_timeout, NULL);
6241 int hci_le_remove_cig_sync(struct hci_dev *hdev, u8 handle)
6243 struct hci_cp_le_remove_cig cp;
6245 memset(&cp, 0, sizeof(cp));
6248 return __hci_cmd_sync_status(hdev, HCI_OP_LE_REMOVE_CIG, sizeof(cp),
6249 &cp, HCI_CMD_TIMEOUT);
6252 int hci_le_big_terminate_sync(struct hci_dev *hdev, u8 handle)
6254 struct hci_cp_le_big_term_sync cp;
6256 memset(&cp, 0, sizeof(cp));
6259 return __hci_cmd_sync_status(hdev, HCI_OP_LE_BIG_TERM_SYNC,
6260 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
6263 int hci_le_pa_terminate_sync(struct hci_dev *hdev, u16 handle)
6265 struct hci_cp_le_pa_term_sync cp;
6267 memset(&cp, 0, sizeof(cp));
6268 cp.handle = cpu_to_le16(handle);
6270 return __hci_cmd_sync_status(hdev, HCI_OP_LE_PA_TERM_SYNC,
6271 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
6274 int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
6275 bool use_rpa, struct adv_info *adv_instance,
6276 u8 *own_addr_type, bdaddr_t *rand_addr)
6280 bacpy(rand_addr, BDADDR_ANY);
6282 /* If privacy is enabled use a resolvable private address. If
6283 * current RPA has expired then generate a new one.
6286 /* If Controller supports LL Privacy use own address type is
6289 if (use_ll_privacy(hdev))
6290 *own_addr_type = ADDR_LE_DEV_RANDOM_RESOLVED;
6292 *own_addr_type = ADDR_LE_DEV_RANDOM;
6295 if (adv_rpa_valid(adv_instance))
6298 if (rpa_valid(hdev))
6302 err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa);
6304 bt_dev_err(hdev, "failed to generate new RPA");
6308 bacpy(rand_addr, &hdev->rpa);
6313 /* In case of required privacy without resolvable private address,
6314 * use an non-resolvable private address. This is useful for
6315 * non-connectable advertising.
6317 if (require_privacy) {
6321 /* The non-resolvable private address is generated
6322 * from random six bytes with the two most significant
6325 get_random_bytes(&nrpa, 6);
6328 /* The non-resolvable private address shall not be
6329 * equal to the public address.
6331 if (bacmp(&hdev->bdaddr, &nrpa))
6335 *own_addr_type = ADDR_LE_DEV_RANDOM;
6336 bacpy(rand_addr, &nrpa);
6341 /* No privacy so use a public address. */
6342 *own_addr_type = ADDR_LE_DEV_PUBLIC;
6347 static int _update_adv_data_sync(struct hci_dev *hdev, void *data)
6349 u8 instance = PTR_ERR(data);
6351 return hci_update_adv_data_sync(hdev, instance);
6354 int hci_update_adv_data(struct hci_dev *hdev, u8 instance)
6356 return hci_cmd_sync_queue(hdev, _update_adv_data_sync,
6357 ERR_PTR(instance), NULL);