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_debugfs.h"
22 static void hci_cmd_sync_complete(struct hci_dev *hdev, u8 result, u16 opcode,
25 bt_dev_dbg(hdev, "result 0x%2.2x", result);
27 if (hdev->req_status != HCI_REQ_PEND)
30 hdev->req_result = result;
31 hdev->req_status = HCI_REQ_DONE;
34 struct sock *sk = hci_skb_sk(skb);
36 /* Drop sk reference if set */
40 hdev->req_skb = skb_get(skb);
43 wake_up_interruptible(&hdev->req_wait_q);
46 static struct sk_buff *hci_cmd_sync_alloc(struct hci_dev *hdev, u16 opcode,
47 u32 plen, const void *param,
50 int len = HCI_COMMAND_HDR_SIZE + plen;
51 struct hci_command_hdr *hdr;
54 skb = bt_skb_alloc(len, GFP_ATOMIC);
58 hdr = skb_put(skb, HCI_COMMAND_HDR_SIZE);
59 hdr->opcode = cpu_to_le16(opcode);
63 skb_put_data(skb, param, plen);
65 bt_dev_dbg(hdev, "skb len %d", skb->len);
67 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
68 hci_skb_opcode(skb) = opcode;
70 /* Grab a reference if command needs to be associated with a sock (e.g.
71 * likely mgmt socket that initiated the command).
81 static void hci_cmd_sync_add(struct hci_request *req, u16 opcode, u32 plen,
82 const void *param, u8 event, struct sock *sk)
84 struct hci_dev *hdev = req->hdev;
87 bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen);
89 /* If an error occurred during request building, there is no point in
90 * queueing the HCI command. We can simply return.
95 skb = hci_cmd_sync_alloc(hdev, opcode, plen, param, sk);
97 bt_dev_err(hdev, "no memory for command (opcode 0x%4.4x)",
103 if (skb_queue_empty(&req->cmd_q))
104 bt_cb(skb)->hci.req_flags |= HCI_REQ_START;
106 hci_skb_event(skb) = event;
108 skb_queue_tail(&req->cmd_q, skb);
111 static int hci_cmd_sync_run(struct hci_request *req)
113 struct hci_dev *hdev = req->hdev;
117 bt_dev_dbg(hdev, "length %u", skb_queue_len(&req->cmd_q));
119 /* If an error occurred during request building, remove all HCI
120 * commands queued on the HCI request queue.
123 skb_queue_purge(&req->cmd_q);
127 /* Do not allow empty requests */
128 if (skb_queue_empty(&req->cmd_q))
131 skb = skb_peek_tail(&req->cmd_q);
132 bt_cb(skb)->hci.req_complete_skb = hci_cmd_sync_complete;
133 bt_cb(skb)->hci.req_flags |= HCI_REQ_SKB;
135 spin_lock_irqsave(&hdev->cmd_q.lock, flags);
136 skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q);
137 spin_unlock_irqrestore(&hdev->cmd_q.lock, flags);
139 queue_work(hdev->workqueue, &hdev->cmd_work);
144 /* This function requires the caller holds hdev->req_lock. */
145 struct sk_buff *__hci_cmd_sync_sk(struct hci_dev *hdev, u16 opcode, u32 plen,
146 const void *param, u8 event, u32 timeout,
149 struct hci_request req;
153 bt_dev_dbg(hdev, "Opcode 0x%4x", opcode);
155 hci_req_init(&req, hdev);
157 hci_cmd_sync_add(&req, opcode, plen, param, event, sk);
159 hdev->req_status = HCI_REQ_PEND;
161 err = hci_cmd_sync_run(&req);
165 err = wait_event_interruptible_timeout(hdev->req_wait_q,
166 hdev->req_status != HCI_REQ_PEND,
169 if (err == -ERESTARTSYS)
170 return ERR_PTR(-EINTR);
172 switch (hdev->req_status) {
174 err = -bt_to_errno(hdev->req_result);
177 case HCI_REQ_CANCELED:
178 err = -hdev->req_result;
186 hdev->req_status = 0;
187 hdev->req_result = 0;
189 hdev->req_skb = NULL;
191 bt_dev_dbg(hdev, "end: err %d", err);
200 EXPORT_SYMBOL(__hci_cmd_sync_sk);
202 /* This function requires the caller holds hdev->req_lock. */
203 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
204 const void *param, u32 timeout)
206 return __hci_cmd_sync_sk(hdev, opcode, plen, param, 0, timeout, NULL);
208 EXPORT_SYMBOL(__hci_cmd_sync);
210 /* Send HCI command and wait for command complete event */
211 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
212 const void *param, u32 timeout)
216 if (!test_bit(HCI_UP, &hdev->flags))
217 return ERR_PTR(-ENETDOWN);
219 bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen);
221 hci_req_sync_lock(hdev);
222 skb = __hci_cmd_sync(hdev, opcode, plen, param, timeout);
223 hci_req_sync_unlock(hdev);
227 EXPORT_SYMBOL(hci_cmd_sync);
229 /* This function requires the caller holds hdev->req_lock. */
230 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
231 const void *param, u8 event, u32 timeout)
233 return __hci_cmd_sync_sk(hdev, opcode, plen, param, event, timeout,
236 EXPORT_SYMBOL(__hci_cmd_sync_ev);
238 /* This function requires the caller holds hdev->req_lock. */
239 int __hci_cmd_sync_status_sk(struct hci_dev *hdev, u16 opcode, u32 plen,
240 const void *param, u8 event, u32 timeout,
246 skb = __hci_cmd_sync_sk(hdev, opcode, plen, param, event, timeout, sk);
248 bt_dev_err(hdev, "Opcode 0x%4x failed: %ld", opcode,
253 /* If command return a status event skb will be set to NULL as there are
254 * no parameters, in case of failure IS_ERR(skb) would have be set to
255 * the actual error would be found with PTR_ERR(skb).
260 status = skb->data[0];
266 EXPORT_SYMBOL(__hci_cmd_sync_status_sk);
268 int __hci_cmd_sync_status(struct hci_dev *hdev, u16 opcode, u32 plen,
269 const void *param, u32 timeout)
271 return __hci_cmd_sync_status_sk(hdev, opcode, plen, param, 0, timeout,
274 EXPORT_SYMBOL(__hci_cmd_sync_status);
276 static void hci_cmd_sync_work(struct work_struct *work)
278 struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_sync_work);
280 bt_dev_dbg(hdev, "");
282 /* Dequeue all entries and run them */
284 struct hci_cmd_sync_work_entry *entry;
286 mutex_lock(&hdev->cmd_sync_work_lock);
287 entry = list_first_entry_or_null(&hdev->cmd_sync_work_list,
288 struct hci_cmd_sync_work_entry,
291 list_del(&entry->list);
292 mutex_unlock(&hdev->cmd_sync_work_lock);
297 bt_dev_dbg(hdev, "entry %p", entry);
302 hci_req_sync_lock(hdev);
303 err = entry->func(hdev, entry->data);
305 entry->destroy(hdev, entry->data, err);
306 hci_req_sync_unlock(hdev);
313 static void hci_cmd_sync_cancel_work(struct work_struct *work)
315 struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_sync_cancel_work);
317 cancel_delayed_work_sync(&hdev->cmd_timer);
318 cancel_delayed_work_sync(&hdev->ncmd_timer);
319 atomic_set(&hdev->cmd_cnt, 1);
321 wake_up_interruptible(&hdev->req_wait_q);
324 void hci_cmd_sync_init(struct hci_dev *hdev)
326 INIT_WORK(&hdev->cmd_sync_work, hci_cmd_sync_work);
327 INIT_LIST_HEAD(&hdev->cmd_sync_work_list);
328 mutex_init(&hdev->cmd_sync_work_lock);
330 INIT_WORK(&hdev->cmd_sync_cancel_work, hci_cmd_sync_cancel_work);
333 void hci_cmd_sync_clear(struct hci_dev *hdev)
335 struct hci_cmd_sync_work_entry *entry, *tmp;
337 cancel_work_sync(&hdev->cmd_sync_work);
339 list_for_each_entry_safe(entry, tmp, &hdev->cmd_sync_work_list, list) {
341 entry->destroy(hdev, entry->data, -ECANCELED);
343 list_del(&entry->list);
348 void __hci_cmd_sync_cancel(struct hci_dev *hdev, int err)
350 bt_dev_dbg(hdev, "err 0x%2.2x", err);
352 if (hdev->req_status == HCI_REQ_PEND) {
353 hdev->req_result = err;
354 hdev->req_status = HCI_REQ_CANCELED;
356 cancel_delayed_work_sync(&hdev->cmd_timer);
357 cancel_delayed_work_sync(&hdev->ncmd_timer);
358 atomic_set(&hdev->cmd_cnt, 1);
360 wake_up_interruptible(&hdev->req_wait_q);
364 void hci_cmd_sync_cancel(struct hci_dev *hdev, int err)
366 bt_dev_dbg(hdev, "err 0x%2.2x", err);
368 if (hdev->req_status == HCI_REQ_PEND) {
369 hdev->req_result = err;
370 hdev->req_status = HCI_REQ_CANCELED;
372 queue_work(hdev->workqueue, &hdev->cmd_sync_cancel_work);
375 EXPORT_SYMBOL(hci_cmd_sync_cancel);
377 int hci_cmd_sync_queue(struct hci_dev *hdev, hci_cmd_sync_work_func_t func,
378 void *data, hci_cmd_sync_work_destroy_t destroy)
380 struct hci_cmd_sync_work_entry *entry;
382 if (hci_dev_test_flag(hdev, HCI_UNREGISTER))
385 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
391 entry->destroy = destroy;
393 mutex_lock(&hdev->cmd_sync_work_lock);
394 list_add_tail(&entry->list, &hdev->cmd_sync_work_list);
395 mutex_unlock(&hdev->cmd_sync_work_lock);
397 queue_work(hdev->req_workqueue, &hdev->cmd_sync_work);
401 EXPORT_SYMBOL(hci_cmd_sync_queue);
403 int hci_update_eir_sync(struct hci_dev *hdev)
405 struct hci_cp_write_eir cp;
407 bt_dev_dbg(hdev, "");
409 if (!hdev_is_powered(hdev))
412 if (!lmp_ext_inq_capable(hdev))
415 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
418 if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
421 memset(&cp, 0, sizeof(cp));
423 eir_create(hdev, cp.data);
425 if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0)
428 memcpy(hdev->eir, cp.data, sizeof(cp.data));
430 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp,
434 static u8 get_service_classes(struct hci_dev *hdev)
436 struct bt_uuid *uuid;
439 list_for_each_entry(uuid, &hdev->uuids, list)
440 val |= uuid->svc_hint;
445 int hci_update_class_sync(struct hci_dev *hdev)
449 bt_dev_dbg(hdev, "");
451 if (!hdev_is_powered(hdev))
454 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
457 if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
460 cod[0] = hdev->minor_class;
461 cod[1] = hdev->major_class;
462 cod[2] = get_service_classes(hdev);
464 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
467 if (memcmp(cod, hdev->dev_class, 3) == 0)
470 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CLASS_OF_DEV,
471 sizeof(cod), cod, HCI_CMD_TIMEOUT);
474 static bool is_advertising_allowed(struct hci_dev *hdev, bool connectable)
476 /* If there is no connection we are OK to advertise. */
477 if (hci_conn_num(hdev, LE_LINK) == 0)
480 /* Check le_states if there is any connection in peripheral role. */
481 if (hdev->conn_hash.le_num_peripheral > 0) {
482 /* Peripheral connection state and non connectable mode
485 if (!connectable && !(hdev->le_states[2] & 0x10))
488 /* Peripheral connection state and connectable mode bit 38
489 * and scannable bit 21.
491 if (connectable && (!(hdev->le_states[4] & 0x40) ||
492 !(hdev->le_states[2] & 0x20)))
496 /* Check le_states if there is any connection in central role. */
497 if (hci_conn_num(hdev, LE_LINK) != hdev->conn_hash.le_num_peripheral) {
498 /* Central connection state and non connectable mode bit 18. */
499 if (!connectable && !(hdev->le_states[2] & 0x02))
502 /* Central connection state and connectable mode bit 35 and
505 if (connectable && (!(hdev->le_states[4] & 0x08) ||
506 !(hdev->le_states[2] & 0x08)))
513 static bool adv_use_rpa(struct hci_dev *hdev, uint32_t flags)
515 /* If privacy is not enabled don't use RPA */
516 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
519 /* If basic privacy mode is enabled use RPA */
520 if (!hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY))
523 /* If limited privacy mode is enabled don't use RPA if we're
524 * both discoverable and bondable.
526 if ((flags & MGMT_ADV_FLAG_DISCOV) &&
527 hci_dev_test_flag(hdev, HCI_BONDABLE))
530 /* We're neither bondable nor discoverable in the limited
531 * privacy mode, therefore use RPA.
536 static int hci_set_random_addr_sync(struct hci_dev *hdev, bdaddr_t *rpa)
538 /* If we're advertising or initiating an LE connection we can't
539 * go ahead and change the random address at this time. This is
540 * because the eventual initiator address used for the
541 * subsequently created connection will be undefined (some
542 * controllers use the new address and others the one we had
543 * when the operation started).
545 * In this kind of scenario skip the update and let the random
546 * address be updated at the next cycle.
548 if (hci_dev_test_flag(hdev, HCI_LE_ADV) ||
549 hci_lookup_le_connect(hdev)) {
550 bt_dev_dbg(hdev, "Deferring random address update");
551 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
555 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_RANDOM_ADDR,
556 6, rpa, HCI_CMD_TIMEOUT);
559 int hci_update_random_address_sync(struct hci_dev *hdev, bool require_privacy,
560 bool rpa, u8 *own_addr_type)
564 /* If privacy is enabled use a resolvable private address. If
565 * current RPA has expired or there is something else than
566 * the current RPA in use, then generate a new one.
569 /* If Controller supports LL Privacy use own address type is
572 if (use_ll_privacy(hdev))
573 *own_addr_type = ADDR_LE_DEV_RANDOM_RESOLVED;
575 *own_addr_type = ADDR_LE_DEV_RANDOM;
577 /* Check if RPA is valid */
581 err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa);
583 bt_dev_err(hdev, "failed to generate new RPA");
587 err = hci_set_random_addr_sync(hdev, &hdev->rpa);
594 /* In case of required privacy without resolvable private address,
595 * use an non-resolvable private address. This is useful for active
596 * scanning and non-connectable advertising.
598 if (require_privacy) {
602 /* The non-resolvable private address is generated
603 * from random six bytes with the two most significant
606 get_random_bytes(&nrpa, 6);
609 /* The non-resolvable private address shall not be
610 * equal to the public address.
612 if (bacmp(&hdev->bdaddr, &nrpa))
616 *own_addr_type = ADDR_LE_DEV_RANDOM;
618 return hci_set_random_addr_sync(hdev, &nrpa);
621 /* If forcing static address is in use or there is no public
622 * address use the static address as random address (but skip
623 * the HCI command if the current random address is already the
626 * In case BR/EDR has been disabled on a dual-mode controller
627 * and a static address has been configured, then use that
628 * address instead of the public BR/EDR address.
630 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
631 !bacmp(&hdev->bdaddr, BDADDR_ANY) ||
632 (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
633 bacmp(&hdev->static_addr, BDADDR_ANY))) {
634 *own_addr_type = ADDR_LE_DEV_RANDOM;
635 if (bacmp(&hdev->static_addr, &hdev->random_addr))
636 return hci_set_random_addr_sync(hdev,
641 /* Neither privacy nor static address is being used so use a
644 *own_addr_type = ADDR_LE_DEV_PUBLIC;
649 static int hci_disable_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance)
651 struct hci_cp_le_set_ext_adv_enable *cp;
652 struct hci_cp_ext_adv_set *set;
653 u8 data[sizeof(*cp) + sizeof(*set) * 1];
656 /* If request specifies an instance that doesn't exist, fail */
658 struct adv_info *adv;
660 adv = hci_find_adv_instance(hdev, instance);
664 /* If not enabled there is nothing to do */
669 memset(data, 0, sizeof(data));
672 set = (void *)cp->data;
674 /* Instance 0x00 indicates all advertising instances will be disabled */
675 cp->num_of_sets = !!instance;
678 set->handle = instance;
680 size = sizeof(*cp) + sizeof(*set) * cp->num_of_sets;
682 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE,
683 size, data, HCI_CMD_TIMEOUT);
686 static int hci_set_adv_set_random_addr_sync(struct hci_dev *hdev, u8 instance,
687 bdaddr_t *random_addr)
689 struct hci_cp_le_set_adv_set_rand_addr cp;
693 /* Instance 0x00 doesn't have an adv_info, instead it uses
694 * hdev->random_addr to track its address so whenever it needs
695 * to be updated this also set the random address since
696 * hdev->random_addr is shared with scan state machine.
698 err = hci_set_random_addr_sync(hdev, random_addr);
703 memset(&cp, 0, sizeof(cp));
705 cp.handle = instance;
706 bacpy(&cp.bdaddr, random_addr);
708 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
709 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
712 int hci_setup_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance)
714 struct hci_cp_le_set_ext_adv_params cp;
717 bdaddr_t random_addr;
720 struct adv_info *adv;
724 adv = hci_find_adv_instance(hdev, instance);
731 /* Updating parameters of an active instance will return a
732 * Command Disallowed error, so we must first disable the
733 * instance if it is active.
735 if (adv && !adv->pending) {
736 err = hci_disable_ext_adv_instance_sync(hdev, instance);
741 flags = hci_adv_instance_flags(hdev, instance);
743 /* If the "connectable" instance flag was not set, then choose between
744 * ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
746 connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
747 mgmt_get_connectable(hdev);
749 if (!is_advertising_allowed(hdev, connectable))
752 /* Set require_privacy to true only when non-connectable
753 * advertising is used. In that case it is fine to use a
754 * non-resolvable private address.
756 err = hci_get_random_address(hdev, !connectable,
757 adv_use_rpa(hdev, flags), adv,
758 &own_addr_type, &random_addr);
762 memset(&cp, 0, sizeof(cp));
765 hci_cpu_to_le24(adv->min_interval, cp.min_interval);
766 hci_cpu_to_le24(adv->max_interval, cp.max_interval);
767 cp.tx_power = adv->tx_power;
769 hci_cpu_to_le24(hdev->le_adv_min_interval, cp.min_interval);
770 hci_cpu_to_le24(hdev->le_adv_max_interval, cp.max_interval);
771 cp.tx_power = HCI_ADV_TX_POWER_NO_PREFERENCE;
774 secondary_adv = (flags & MGMT_ADV_FLAG_SEC_MASK);
778 cp.evt_properties = cpu_to_le16(LE_EXT_ADV_CONN_IND);
780 cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_IND);
781 } else if (hci_adv_instance_is_scannable(hdev, instance) ||
782 (flags & MGMT_ADV_PARAM_SCAN_RSP)) {
784 cp.evt_properties = cpu_to_le16(LE_EXT_ADV_SCAN_IND);
786 cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_SCAN_IND);
789 cp.evt_properties = cpu_to_le16(LE_EXT_ADV_NON_CONN_IND);
791 cp.evt_properties = cpu_to_le16(LE_LEGACY_NONCONN_IND);
794 /* If Own_Address_Type equals 0x02 or 0x03, the Peer_Address parameter
795 * contains the peer’s Identity Address and the Peer_Address_Type
796 * parameter contains the peer’s Identity Type (i.e., 0x00 or 0x01).
797 * These parameters are used to locate the corresponding local IRK in
798 * the resolving list; this IRK is used to generate their own address
799 * used in the advertisement.
801 if (own_addr_type == ADDR_LE_DEV_RANDOM_RESOLVED)
802 hci_copy_identity_address(hdev, &cp.peer_addr,
805 cp.own_addr_type = own_addr_type;
806 cp.channel_map = hdev->le_adv_channel_map;
807 cp.handle = instance;
809 if (flags & MGMT_ADV_FLAG_SEC_2M) {
810 cp.primary_phy = HCI_ADV_PHY_1M;
811 cp.secondary_phy = HCI_ADV_PHY_2M;
812 } else if (flags & MGMT_ADV_FLAG_SEC_CODED) {
813 cp.primary_phy = HCI_ADV_PHY_CODED;
814 cp.secondary_phy = HCI_ADV_PHY_CODED;
816 /* In all other cases use 1M */
817 cp.primary_phy = HCI_ADV_PHY_1M;
818 cp.secondary_phy = HCI_ADV_PHY_1M;
821 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS,
822 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
826 if ((own_addr_type == ADDR_LE_DEV_RANDOM ||
827 own_addr_type == ADDR_LE_DEV_RANDOM_RESOLVED) &&
828 bacmp(&random_addr, BDADDR_ANY)) {
829 /* Check if random address need to be updated */
831 if (!bacmp(&random_addr, &adv->random_addr))
834 if (!bacmp(&random_addr, &hdev->random_addr))
838 return hci_set_adv_set_random_addr_sync(hdev, instance,
845 static int hci_set_ext_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
848 struct hci_cp_le_set_ext_scan_rsp_data cp;
849 u8 data[HCI_MAX_EXT_AD_LENGTH];
852 struct adv_info *adv = NULL;
855 memset(&pdu, 0, sizeof(pdu));
858 adv = hci_find_adv_instance(hdev, instance);
859 if (!adv || !adv->scan_rsp_changed)
863 len = eir_create_scan_rsp(hdev, instance, pdu.data);
865 pdu.cp.handle = instance;
867 pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
868 pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
870 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_RSP_DATA,
871 sizeof(pdu.cp) + len, &pdu.cp,
877 adv->scan_rsp_changed = false;
879 memcpy(hdev->scan_rsp_data, pdu.data, len);
880 hdev->scan_rsp_data_len = len;
886 static int __hci_set_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
888 struct hci_cp_le_set_scan_rsp_data cp;
891 memset(&cp, 0, sizeof(cp));
893 len = eir_create_scan_rsp(hdev, instance, cp.data);
895 if (hdev->scan_rsp_data_len == len &&
896 !memcmp(cp.data, hdev->scan_rsp_data, len))
899 memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));
900 hdev->scan_rsp_data_len = len;
904 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_RSP_DATA,
905 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
908 int hci_update_scan_rsp_data_sync(struct hci_dev *hdev, u8 instance)
910 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
913 if (ext_adv_capable(hdev))
914 return hci_set_ext_scan_rsp_data_sync(hdev, instance);
916 return __hci_set_scan_rsp_data_sync(hdev, instance);
919 int hci_enable_ext_advertising_sync(struct hci_dev *hdev, u8 instance)
921 struct hci_cp_le_set_ext_adv_enable *cp;
922 struct hci_cp_ext_adv_set *set;
923 u8 data[sizeof(*cp) + sizeof(*set) * 1];
924 struct adv_info *adv;
927 adv = hci_find_adv_instance(hdev, instance);
930 /* If already enabled there is nothing to do */
938 set = (void *)cp->data;
940 memset(cp, 0, sizeof(*cp));
943 cp->num_of_sets = 0x01;
945 memset(set, 0, sizeof(*set));
947 set->handle = instance;
949 /* Set duration per instance since controller is responsible for
952 if (adv && adv->timeout) {
953 u16 duration = adv->timeout * MSEC_PER_SEC;
955 /* Time = N * 10 ms */
956 set->duration = cpu_to_le16(duration / 10);
959 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE,
961 sizeof(*set) * cp->num_of_sets,
962 data, HCI_CMD_TIMEOUT);
965 int hci_start_ext_adv_sync(struct hci_dev *hdev, u8 instance)
969 err = hci_setup_ext_adv_instance_sync(hdev, instance);
973 err = hci_set_ext_scan_rsp_data_sync(hdev, instance);
977 return hci_enable_ext_advertising_sync(hdev, instance);
980 static int hci_disable_per_advertising_sync(struct hci_dev *hdev, u8 instance)
982 struct hci_cp_le_set_per_adv_enable cp;
984 /* If periodic advertising already disabled there is nothing to do. */
985 if (!hci_dev_test_flag(hdev, HCI_LE_PER_ADV))
988 memset(&cp, 0, sizeof(cp));
991 cp.handle = instance;
993 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE,
994 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
997 static int hci_set_per_adv_params_sync(struct hci_dev *hdev, u8 instance,
998 u16 min_interval, u16 max_interval)
1000 struct hci_cp_le_set_per_adv_params cp;
1002 memset(&cp, 0, sizeof(cp));
1005 min_interval = DISCOV_LE_PER_ADV_INT_MIN;
1008 max_interval = DISCOV_LE_PER_ADV_INT_MAX;
1010 cp.handle = instance;
1011 cp.min_interval = cpu_to_le16(min_interval);
1012 cp.max_interval = cpu_to_le16(max_interval);
1013 cp.periodic_properties = 0x0000;
1015 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS,
1016 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1019 static int hci_set_per_adv_data_sync(struct hci_dev *hdev, u8 instance)
1022 struct hci_cp_le_set_per_adv_data cp;
1023 u8 data[HCI_MAX_PER_AD_LENGTH];
1027 memset(&pdu, 0, sizeof(pdu));
1030 struct adv_info *adv = hci_find_adv_instance(hdev, instance);
1032 if (!adv || !adv->periodic)
1036 len = eir_create_per_adv_data(hdev, instance, pdu.data);
1038 pdu.cp.length = len;
1039 pdu.cp.handle = instance;
1040 pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
1042 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_DATA,
1043 sizeof(pdu.cp) + len, &pdu,
1047 static int hci_enable_per_advertising_sync(struct hci_dev *hdev, u8 instance)
1049 struct hci_cp_le_set_per_adv_enable cp;
1051 /* If periodic advertising already enabled there is nothing to do. */
1052 if (hci_dev_test_flag(hdev, HCI_LE_PER_ADV))
1055 memset(&cp, 0, sizeof(cp));
1058 cp.handle = instance;
1060 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE,
1061 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1064 /* Checks if periodic advertising data contains a Basic Announcement and if it
1065 * does generates a Broadcast ID and add Broadcast Announcement.
1067 static int hci_adv_bcast_annoucement(struct hci_dev *hdev, struct adv_info *adv)
1072 /* Skip if NULL adv as instance 0x00 is used for general purpose
1073 * advertising so it cannot used for the likes of Broadcast Announcement
1074 * as it can be overwritten at any point.
1079 /* Check if PA data doesn't contains a Basic Audio Announcement then
1080 * there is nothing to do.
1082 if (!eir_get_service_data(adv->per_adv_data, adv->per_adv_data_len,
1086 /* Check if advertising data already has a Broadcast Announcement since
1087 * the process may want to control the Broadcast ID directly and in that
1088 * case the kernel shall no interfere.
1090 if (eir_get_service_data(adv->adv_data, adv->adv_data_len, 0x1852,
1094 /* Generate Broadcast ID */
1095 get_random_bytes(bid, sizeof(bid));
1096 eir_append_service_data(ad, 0, 0x1852, bid, sizeof(bid));
1097 hci_set_adv_instance_data(hdev, adv->instance, sizeof(ad), ad, 0, NULL);
1099 return hci_update_adv_data_sync(hdev, adv->instance);
1102 int hci_start_per_adv_sync(struct hci_dev *hdev, u8 instance, u8 data_len,
1103 u8 *data, u32 flags, u16 min_interval,
1104 u16 max_interval, u16 sync_interval)
1106 struct adv_info *adv = NULL;
1110 hci_disable_per_advertising_sync(hdev, instance);
1113 adv = hci_find_adv_instance(hdev, instance);
1114 /* Create an instance if that could not be found */
1116 adv = hci_add_per_instance(hdev, instance, flags,
1121 return PTR_ERR(adv);
1126 /* Only start advertising if instance 0 or if a dedicated instance has
1129 if (!adv || added) {
1130 err = hci_start_ext_adv_sync(hdev, instance);
1134 err = hci_adv_bcast_annoucement(hdev, adv);
1139 err = hci_set_per_adv_params_sync(hdev, instance, min_interval,
1144 err = hci_set_per_adv_data_sync(hdev, instance);
1148 err = hci_enable_per_advertising_sync(hdev, instance);
1156 hci_remove_adv_instance(hdev, instance);
1161 static int hci_start_adv_sync(struct hci_dev *hdev, u8 instance)
1165 if (ext_adv_capable(hdev))
1166 return hci_start_ext_adv_sync(hdev, instance);
1168 err = hci_update_adv_data_sync(hdev, instance);
1172 err = hci_update_scan_rsp_data_sync(hdev, instance);
1176 return hci_enable_advertising_sync(hdev);
1179 int hci_enable_advertising_sync(struct hci_dev *hdev)
1181 struct adv_info *adv_instance;
1182 struct hci_cp_le_set_adv_param cp;
1183 u8 own_addr_type, enable = 0x01;
1185 u16 adv_min_interval, adv_max_interval;
1189 if (ext_adv_capable(hdev))
1190 return hci_enable_ext_advertising_sync(hdev,
1191 hdev->cur_adv_instance);
1193 flags = hci_adv_instance_flags(hdev, hdev->cur_adv_instance);
1194 adv_instance = hci_find_adv_instance(hdev, hdev->cur_adv_instance);
1196 /* If the "connectable" instance flag was not set, then choose between
1197 * ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
1199 connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
1200 mgmt_get_connectable(hdev);
1202 if (!is_advertising_allowed(hdev, connectable))
1205 status = hci_disable_advertising_sync(hdev);
1209 /* Clear the HCI_LE_ADV bit temporarily so that the
1210 * hci_update_random_address knows that it's safe to go ahead
1211 * and write a new random address. The flag will be set back on
1212 * as soon as the SET_ADV_ENABLE HCI command completes.
1214 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1216 /* Set require_privacy to true only when non-connectable
1217 * advertising is used. In that case it is fine to use a
1218 * non-resolvable private address.
1220 status = hci_update_random_address_sync(hdev, !connectable,
1221 adv_use_rpa(hdev, flags),
1226 memset(&cp, 0, sizeof(cp));
1229 adv_min_interval = adv_instance->min_interval;
1230 adv_max_interval = adv_instance->max_interval;
1232 adv_min_interval = hdev->le_adv_min_interval;
1233 adv_max_interval = hdev->le_adv_max_interval;
1237 cp.type = LE_ADV_IND;
1239 if (hci_adv_instance_is_scannable(hdev, hdev->cur_adv_instance))
1240 cp.type = LE_ADV_SCAN_IND;
1242 cp.type = LE_ADV_NONCONN_IND;
1244 if (!hci_dev_test_flag(hdev, HCI_DISCOVERABLE) ||
1245 hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) {
1246 adv_min_interval = DISCOV_LE_FAST_ADV_INT_MIN;
1247 adv_max_interval = DISCOV_LE_FAST_ADV_INT_MAX;
1251 cp.min_interval = cpu_to_le16(adv_min_interval);
1252 cp.max_interval = cpu_to_le16(adv_max_interval);
1253 cp.own_address_type = own_addr_type;
1254 cp.channel_map = hdev->le_adv_channel_map;
1256 status = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_PARAM,
1257 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1261 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
1262 sizeof(enable), &enable, HCI_CMD_TIMEOUT);
1265 static int enable_advertising_sync(struct hci_dev *hdev, void *data)
1267 return hci_enable_advertising_sync(hdev);
1270 int hci_enable_advertising(struct hci_dev *hdev)
1272 if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
1273 list_empty(&hdev->adv_instances))
1276 return hci_cmd_sync_queue(hdev, enable_advertising_sync, NULL, NULL);
1279 int hci_remove_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance,
1284 if (!ext_adv_capable(hdev))
1287 err = hci_disable_ext_adv_instance_sync(hdev, instance);
1291 /* If request specifies an instance that doesn't exist, fail */
1292 if (instance > 0 && !hci_find_adv_instance(hdev, instance))
1295 return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_REMOVE_ADV_SET,
1296 sizeof(instance), &instance, 0,
1297 HCI_CMD_TIMEOUT, sk);
1300 static int remove_ext_adv_sync(struct hci_dev *hdev, void *data)
1302 struct adv_info *adv = data;
1306 instance = adv->instance;
1308 return hci_remove_ext_adv_instance_sync(hdev, instance, NULL);
1311 int hci_remove_ext_adv_instance(struct hci_dev *hdev, u8 instance)
1313 struct adv_info *adv = NULL;
1316 adv = hci_find_adv_instance(hdev, instance);
1321 return hci_cmd_sync_queue(hdev, remove_ext_adv_sync, adv, NULL);
1324 int hci_le_terminate_big_sync(struct hci_dev *hdev, u8 handle, u8 reason)
1326 struct hci_cp_le_term_big cp;
1328 memset(&cp, 0, sizeof(cp));
1332 return __hci_cmd_sync_status(hdev, HCI_OP_LE_TERM_BIG,
1333 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1336 static void cancel_adv_timeout(struct hci_dev *hdev)
1338 if (hdev->adv_instance_timeout) {
1339 hdev->adv_instance_timeout = 0;
1340 cancel_delayed_work(&hdev->adv_instance_expire);
1344 static int hci_set_ext_adv_data_sync(struct hci_dev *hdev, u8 instance)
1347 struct hci_cp_le_set_ext_adv_data cp;
1348 u8 data[HCI_MAX_EXT_AD_LENGTH];
1351 struct adv_info *adv = NULL;
1354 memset(&pdu, 0, sizeof(pdu));
1357 adv = hci_find_adv_instance(hdev, instance);
1358 if (!adv || !adv->adv_data_changed)
1362 len = eir_create_adv_data(hdev, instance, pdu.data);
1364 pdu.cp.length = len;
1365 pdu.cp.handle = instance;
1366 pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;
1367 pdu.cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;
1369 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_DATA,
1370 sizeof(pdu.cp) + len, &pdu.cp,
1375 /* Update data if the command succeed */
1377 adv->adv_data_changed = false;
1379 memcpy(hdev->adv_data, pdu.data, len);
1380 hdev->adv_data_len = len;
1386 static int hci_set_adv_data_sync(struct hci_dev *hdev, u8 instance)
1388 struct hci_cp_le_set_adv_data cp;
1391 memset(&cp, 0, sizeof(cp));
1393 len = eir_create_adv_data(hdev, instance, cp.data);
1395 /* There's nothing to do if the data hasn't changed */
1396 if (hdev->adv_data_len == len &&
1397 memcmp(cp.data, hdev->adv_data, len) == 0)
1400 memcpy(hdev->adv_data, cp.data, sizeof(cp.data));
1401 hdev->adv_data_len = len;
1405 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_DATA,
1406 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1409 int hci_update_adv_data_sync(struct hci_dev *hdev, u8 instance)
1411 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
1414 if (ext_adv_capable(hdev))
1415 return hci_set_ext_adv_data_sync(hdev, instance);
1417 return hci_set_adv_data_sync(hdev, instance);
1420 int hci_schedule_adv_instance_sync(struct hci_dev *hdev, u8 instance,
1423 struct adv_info *adv = NULL;
1426 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) && !ext_adv_capable(hdev))
1429 if (hdev->adv_instance_timeout)
1432 adv = hci_find_adv_instance(hdev, instance);
1436 /* A zero timeout means unlimited advertising. As long as there is
1437 * only one instance, duration should be ignored. We still set a timeout
1438 * in case further instances are being added later on.
1440 * If the remaining lifetime of the instance is more than the duration
1441 * then the timeout corresponds to the duration, otherwise it will be
1442 * reduced to the remaining instance lifetime.
1444 if (adv->timeout == 0 || adv->duration <= adv->remaining_time)
1445 timeout = adv->duration;
1447 timeout = adv->remaining_time;
1449 /* The remaining time is being reduced unless the instance is being
1450 * advertised without time limit.
1453 adv->remaining_time = adv->remaining_time - timeout;
1455 /* Only use work for scheduling instances with legacy advertising */
1456 if (!ext_adv_capable(hdev)) {
1457 hdev->adv_instance_timeout = timeout;
1458 queue_delayed_work(hdev->req_workqueue,
1459 &hdev->adv_instance_expire,
1460 msecs_to_jiffies(timeout * 1000));
1463 /* If we're just re-scheduling the same instance again then do not
1464 * execute any HCI commands. This happens when a single instance is
1467 if (!force && hdev->cur_adv_instance == instance &&
1468 hci_dev_test_flag(hdev, HCI_LE_ADV))
1471 hdev->cur_adv_instance = instance;
1473 return hci_start_adv_sync(hdev, instance);
1476 static int hci_clear_adv_sets_sync(struct hci_dev *hdev, struct sock *sk)
1480 if (!ext_adv_capable(hdev))
1483 /* Disable instance 0x00 to disable all instances */
1484 err = hci_disable_ext_adv_instance_sync(hdev, 0x00);
1488 return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_CLEAR_ADV_SETS,
1489 0, NULL, 0, HCI_CMD_TIMEOUT, sk);
1492 static int hci_clear_adv_sync(struct hci_dev *hdev, struct sock *sk, bool force)
1494 struct adv_info *adv, *n;
1496 if (ext_adv_capable(hdev))
1497 /* Remove all existing sets */
1498 return hci_clear_adv_sets_sync(hdev, sk);
1500 /* This is safe as long as there is no command send while the lock is
1505 /* Cleanup non-ext instances */
1506 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1507 u8 instance = adv->instance;
1510 if (!(force || adv->timeout))
1513 err = hci_remove_adv_instance(hdev, instance);
1515 mgmt_advertising_removed(sk, hdev, instance);
1518 hci_dev_unlock(hdev);
1523 static int hci_remove_adv_sync(struct hci_dev *hdev, u8 instance,
1528 /* If we use extended advertising, instance has to be removed first. */
1529 if (ext_adv_capable(hdev))
1530 return hci_remove_ext_adv_instance_sync(hdev, instance, sk);
1532 /* This is safe as long as there is no command send while the lock is
1537 err = hci_remove_adv_instance(hdev, instance);
1539 mgmt_advertising_removed(sk, hdev, instance);
1541 hci_dev_unlock(hdev);
1546 /* For a single instance:
1547 * - force == true: The instance will be removed even when its remaining
1548 * lifetime is not zero.
1549 * - force == false: the instance will be deactivated but kept stored unless
1550 * the remaining lifetime is zero.
1552 * For instance == 0x00:
1553 * - force == true: All instances will be removed regardless of their timeout
1555 * - force == false: Only instances that have a timeout will be removed.
1557 int hci_remove_advertising_sync(struct hci_dev *hdev, struct sock *sk,
1558 u8 instance, bool force)
1560 struct adv_info *next = NULL;
1563 /* Cancel any timeout concerning the removed instance(s). */
1564 if (!instance || hdev->cur_adv_instance == instance)
1565 cancel_adv_timeout(hdev);
1567 /* Get the next instance to advertise BEFORE we remove
1568 * the current one. This can be the same instance again
1569 * if there is only one instance.
1571 if (hdev->cur_adv_instance == instance)
1572 next = hci_get_next_instance(hdev, instance);
1575 err = hci_clear_adv_sync(hdev, sk, force);
1579 struct adv_info *adv = hci_find_adv_instance(hdev, instance);
1581 if (force || (adv && adv->timeout && !adv->remaining_time)) {
1582 /* Don't advertise a removed instance. */
1583 if (next && next->instance == instance)
1586 err = hci_remove_adv_sync(hdev, instance, sk);
1592 if (!hdev_is_powered(hdev) || hci_dev_test_flag(hdev, HCI_ADVERTISING))
1595 if (next && !ext_adv_capable(hdev))
1596 hci_schedule_adv_instance_sync(hdev, next->instance, false);
1601 int hci_read_rssi_sync(struct hci_dev *hdev, __le16 handle)
1603 struct hci_cp_read_rssi cp;
1606 return __hci_cmd_sync_status(hdev, HCI_OP_READ_RSSI,
1607 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1610 int hci_read_clock_sync(struct hci_dev *hdev, struct hci_cp_read_clock *cp)
1612 return __hci_cmd_sync_status(hdev, HCI_OP_READ_CLOCK,
1613 sizeof(*cp), cp, HCI_CMD_TIMEOUT);
1616 int hci_read_tx_power_sync(struct hci_dev *hdev, __le16 handle, u8 type)
1618 struct hci_cp_read_tx_power cp;
1622 return __hci_cmd_sync_status(hdev, HCI_OP_READ_TX_POWER,
1623 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1626 int hci_disable_advertising_sync(struct hci_dev *hdev)
1630 /* If controller is not advertising we are done. */
1631 if (!hci_dev_test_flag(hdev, HCI_LE_ADV))
1634 if (ext_adv_capable(hdev))
1635 return hci_disable_ext_adv_instance_sync(hdev, 0x00);
1637 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
1638 sizeof(enable), &enable, HCI_CMD_TIMEOUT);
1641 static int hci_le_set_ext_scan_enable_sync(struct hci_dev *hdev, u8 val,
1644 struct hci_cp_le_set_ext_scan_enable cp;
1646 memset(&cp, 0, sizeof(cp));
1648 cp.filter_dup = filter_dup;
1650 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE,
1651 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1654 static int hci_le_set_scan_enable_sync(struct hci_dev *hdev, u8 val,
1657 struct hci_cp_le_set_scan_enable cp;
1659 if (use_ext_scan(hdev))
1660 return hci_le_set_ext_scan_enable_sync(hdev, val, filter_dup);
1662 memset(&cp, 0, sizeof(cp));
1664 cp.filter_dup = filter_dup;
1666 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_ENABLE,
1667 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1670 static int hci_le_set_addr_resolution_enable_sync(struct hci_dev *hdev, u8 val)
1672 if (!use_ll_privacy(hdev))
1675 /* If controller is not/already resolving we are done. */
1676 if (val == hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION))
1679 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
1680 sizeof(val), &val, HCI_CMD_TIMEOUT);
1683 static int hci_scan_disable_sync(struct hci_dev *hdev)
1687 /* If controller is not scanning we are done. */
1688 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
1691 if (hdev->scanning_paused) {
1692 bt_dev_dbg(hdev, "Scanning is paused for suspend");
1696 err = hci_le_set_scan_enable_sync(hdev, LE_SCAN_DISABLE, 0x00);
1698 bt_dev_err(hdev, "Unable to disable scanning: %d", err);
1705 static bool scan_use_rpa(struct hci_dev *hdev)
1707 return hci_dev_test_flag(hdev, HCI_PRIVACY);
1710 static void hci_start_interleave_scan(struct hci_dev *hdev)
1712 hdev->interleave_scan_state = INTERLEAVE_SCAN_NO_FILTER;
1713 queue_delayed_work(hdev->req_workqueue,
1714 &hdev->interleave_scan, 0);
1717 static bool is_interleave_scanning(struct hci_dev *hdev)
1719 return hdev->interleave_scan_state != INTERLEAVE_SCAN_NONE;
1722 static void cancel_interleave_scan(struct hci_dev *hdev)
1724 bt_dev_dbg(hdev, "cancelling interleave scan");
1726 cancel_delayed_work_sync(&hdev->interleave_scan);
1728 hdev->interleave_scan_state = INTERLEAVE_SCAN_NONE;
1731 /* Return true if interleave_scan wasn't started until exiting this function,
1732 * otherwise, return false
1734 static bool hci_update_interleaved_scan_sync(struct hci_dev *hdev)
1736 /* Do interleaved scan only if all of the following are true:
1737 * - There is at least one ADV monitor
1738 * - At least one pending LE connection or one device to be scanned for
1739 * - Monitor offloading is not supported
1740 * If so, we should alternate between allowlist scan and one without
1741 * any filters to save power.
1743 bool use_interleaving = hci_is_adv_monitoring(hdev) &&
1744 !(list_empty(&hdev->pend_le_conns) &&
1745 list_empty(&hdev->pend_le_reports)) &&
1746 hci_get_adv_monitor_offload_ext(hdev) ==
1747 HCI_ADV_MONITOR_EXT_NONE;
1748 bool is_interleaving = is_interleave_scanning(hdev);
1750 if (use_interleaving && !is_interleaving) {
1751 hci_start_interleave_scan(hdev);
1752 bt_dev_dbg(hdev, "starting interleave scan");
1756 if (!use_interleaving && is_interleaving)
1757 cancel_interleave_scan(hdev);
1762 /* Removes connection to resolve list if needed.*/
1763 static int hci_le_del_resolve_list_sync(struct hci_dev *hdev,
1764 bdaddr_t *bdaddr, u8 bdaddr_type)
1766 struct hci_cp_le_del_from_resolv_list cp;
1767 struct bdaddr_list_with_irk *entry;
1769 if (!use_ll_privacy(hdev))
1772 /* Check if the IRK has been programmed */
1773 entry = hci_bdaddr_list_lookup_with_irk(&hdev->le_resolv_list, bdaddr,
1778 cp.bdaddr_type = bdaddr_type;
1779 bacpy(&cp.bdaddr, bdaddr);
1781 return __hci_cmd_sync_status(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST,
1782 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1785 static int hci_le_del_accept_list_sync(struct hci_dev *hdev,
1786 bdaddr_t *bdaddr, u8 bdaddr_type)
1788 struct hci_cp_le_del_from_accept_list cp;
1791 /* Check if device is on accept list before removing it */
1792 if (!hci_bdaddr_list_lookup(&hdev->le_accept_list, bdaddr, bdaddr_type))
1795 cp.bdaddr_type = bdaddr_type;
1796 bacpy(&cp.bdaddr, bdaddr);
1798 /* Ignore errors when removing from resolving list as that is likely
1799 * that the device was never added.
1801 hci_le_del_resolve_list_sync(hdev, &cp.bdaddr, cp.bdaddr_type);
1803 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
1804 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1806 bt_dev_err(hdev, "Unable to remove from allow list: %d", err);
1810 bt_dev_dbg(hdev, "Remove %pMR (0x%x) from allow list", &cp.bdaddr,
1816 /* Adds connection to resolve list if needed.
1817 * Setting params to NULL programs local hdev->irk
1819 static int hci_le_add_resolve_list_sync(struct hci_dev *hdev,
1820 struct hci_conn_params *params)
1822 struct hci_cp_le_add_to_resolv_list cp;
1823 struct smp_irk *irk;
1824 struct bdaddr_list_with_irk *entry;
1826 if (!use_ll_privacy(hdev))
1829 /* Attempt to program local identity address, type and irk if params is
1833 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
1836 hci_copy_identity_address(hdev, &cp.bdaddr, &cp.bdaddr_type);
1837 memcpy(cp.peer_irk, hdev->irk, 16);
1841 irk = hci_find_irk_by_addr(hdev, ¶ms->addr, params->addr_type);
1845 /* Check if the IK has _not_ been programmed yet. */
1846 entry = hci_bdaddr_list_lookup_with_irk(&hdev->le_resolv_list,
1852 cp.bdaddr_type = params->addr_type;
1853 bacpy(&cp.bdaddr, ¶ms->addr);
1854 memcpy(cp.peer_irk, irk->val, 16);
1856 /* Default privacy mode is always Network */
1857 params->privacy_mode = HCI_NETWORK_PRIVACY;
1860 if (hci_dev_test_flag(hdev, HCI_PRIVACY))
1861 memcpy(cp.local_irk, hdev->irk, 16);
1863 memset(cp.local_irk, 0, 16);
1865 return __hci_cmd_sync_status(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST,
1866 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1869 /* Set Device Privacy Mode. */
1870 static int hci_le_set_privacy_mode_sync(struct hci_dev *hdev,
1871 struct hci_conn_params *params)
1873 struct hci_cp_le_set_privacy_mode cp;
1874 struct smp_irk *irk;
1876 /* If device privacy mode has already been set there is nothing to do */
1877 if (params->privacy_mode == HCI_DEVICE_PRIVACY)
1880 /* Check if HCI_CONN_FLAG_DEVICE_PRIVACY has been set as it also
1881 * indicates that LL Privacy has been enabled and
1882 * HCI_OP_LE_SET_PRIVACY_MODE is supported.
1884 if (!(params->flags & HCI_CONN_FLAG_DEVICE_PRIVACY))
1887 irk = hci_find_irk_by_addr(hdev, ¶ms->addr, params->addr_type);
1891 memset(&cp, 0, sizeof(cp));
1892 cp.bdaddr_type = irk->addr_type;
1893 bacpy(&cp.bdaddr, &irk->bdaddr);
1894 cp.mode = HCI_DEVICE_PRIVACY;
1896 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PRIVACY_MODE,
1897 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1900 /* Adds connection to allow list if needed, if the device uses RPA (has IRK)
1901 * this attempts to program the device in the resolving list as well and
1902 * properly set the privacy mode.
1904 static int hci_le_add_accept_list_sync(struct hci_dev *hdev,
1905 struct hci_conn_params *params,
1908 struct hci_cp_le_add_to_accept_list cp;
1911 /* During suspend, only wakeable devices can be in acceptlist */
1912 if (hdev->suspended &&
1913 !(params->flags & HCI_CONN_FLAG_REMOTE_WAKEUP))
1916 /* Select filter policy to accept all advertising */
1917 if (*num_entries >= hdev->le_accept_list_size)
1920 /* Accept list can not be used with RPAs */
1921 if (!use_ll_privacy(hdev) &&
1922 hci_find_irk_by_addr(hdev, ¶ms->addr, params->addr_type))
1925 /* Attempt to program the device in the resolving list first to avoid
1926 * having to rollback in case it fails since the resolving list is
1927 * dynamic it can probably be smaller than the accept list.
1929 err = hci_le_add_resolve_list_sync(hdev, params);
1931 bt_dev_err(hdev, "Unable to add to resolve list: %d", err);
1935 /* Set Privacy Mode */
1936 err = hci_le_set_privacy_mode_sync(hdev, params);
1938 bt_dev_err(hdev, "Unable to set privacy mode: %d", err);
1942 /* Check if already in accept list */
1943 if (hci_bdaddr_list_lookup(&hdev->le_accept_list, ¶ms->addr,
1948 cp.bdaddr_type = params->addr_type;
1949 bacpy(&cp.bdaddr, ¶ms->addr);
1951 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST,
1952 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
1954 bt_dev_err(hdev, "Unable to add to allow list: %d", err);
1955 /* Rollback the device from the resolving list */
1956 hci_le_del_resolve_list_sync(hdev, &cp.bdaddr, cp.bdaddr_type);
1960 bt_dev_dbg(hdev, "Add %pMR (0x%x) to allow list", &cp.bdaddr,
1966 /* This function disables/pause all advertising instances */
1967 static int hci_pause_advertising_sync(struct hci_dev *hdev)
1972 /* If already been paused there is nothing to do. */
1973 if (hdev->advertising_paused)
1976 bt_dev_dbg(hdev, "Pausing directed advertising");
1978 /* Stop directed advertising */
1979 old_state = hci_dev_test_flag(hdev, HCI_ADVERTISING);
1981 /* When discoverable timeout triggers, then just make sure
1982 * the limited discoverable flag is cleared. Even in the case
1983 * of a timeout triggered from general discoverable, it is
1984 * safe to unconditionally clear the flag.
1986 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
1987 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
1988 hdev->discov_timeout = 0;
1991 bt_dev_dbg(hdev, "Pausing advertising instances");
1993 /* Call to disable any advertisements active on the controller.
1994 * This will succeed even if no advertisements are configured.
1996 err = hci_disable_advertising_sync(hdev);
2000 /* If we are using software rotation, pause the loop */
2001 if (!ext_adv_capable(hdev))
2002 cancel_adv_timeout(hdev);
2004 hdev->advertising_paused = true;
2005 hdev->advertising_old_state = old_state;
2010 /* This function enables all user advertising instances */
2011 static int hci_resume_advertising_sync(struct hci_dev *hdev)
2013 struct adv_info *adv, *tmp;
2016 /* If advertising has not been paused there is nothing to do. */
2017 if (!hdev->advertising_paused)
2020 /* Resume directed advertising */
2021 hdev->advertising_paused = false;
2022 if (hdev->advertising_old_state) {
2023 hci_dev_set_flag(hdev, HCI_ADVERTISING);
2024 hdev->advertising_old_state = 0;
2027 bt_dev_dbg(hdev, "Resuming advertising instances");
2029 if (ext_adv_capable(hdev)) {
2030 /* Call for each tracked instance to be re-enabled */
2031 list_for_each_entry_safe(adv, tmp, &hdev->adv_instances, list) {
2032 err = hci_enable_ext_advertising_sync(hdev,
2037 /* If the instance cannot be resumed remove it */
2038 hci_remove_ext_adv_instance_sync(hdev, adv->instance,
2042 /* Schedule for most recent instance to be restarted and begin
2043 * the software rotation loop
2045 err = hci_schedule_adv_instance_sync(hdev,
2046 hdev->cur_adv_instance,
2050 hdev->advertising_paused = false;
2055 struct sk_buff *hci_read_local_oob_data_sync(struct hci_dev *hdev,
2056 bool extended, struct sock *sk)
2058 u16 opcode = extended ? HCI_OP_READ_LOCAL_OOB_EXT_DATA :
2059 HCI_OP_READ_LOCAL_OOB_DATA;
2061 return __hci_cmd_sync_sk(hdev, opcode, 0, NULL, 0, HCI_CMD_TIMEOUT, sk);
2064 /* Device must not be scanning when updating the accept list.
2066 * Update is done using the following sequence:
2068 * use_ll_privacy((Disable Advertising) -> Disable Resolving List) ->
2069 * Remove Devices From Accept List ->
2070 * (has IRK && use_ll_privacy(Remove Devices From Resolving List))->
2071 * Add Devices to Accept List ->
2072 * (has IRK && use_ll_privacy(Remove Devices From Resolving List)) ->
2073 * use_ll_privacy(Enable Resolving List -> (Enable Advertising)) ->
2076 * In case of failure advertising shall be restored to its original state and
2077 * return would disable accept list since either accept or resolving list could
2078 * not be programmed.
2081 static u8 hci_update_accept_list_sync(struct hci_dev *hdev)
2083 struct hci_conn_params *params;
2084 struct bdaddr_list *b, *t;
2086 bool pend_conn, pend_report;
2090 /* Pause advertising if resolving list can be used as controllers are
2091 * cannot accept resolving list modifications while advertising.
2093 if (use_ll_privacy(hdev)) {
2094 err = hci_pause_advertising_sync(hdev);
2096 bt_dev_err(hdev, "pause advertising failed: %d", err);
2101 /* Disable address resolution while reprogramming accept list since
2102 * devices that do have an IRK will be programmed in the resolving list
2103 * when LL Privacy is enabled.
2105 err = hci_le_set_addr_resolution_enable_sync(hdev, 0x00);
2107 bt_dev_err(hdev, "Unable to disable LL privacy: %d", err);
2111 /* Go through the current accept list programmed into the
2112 * controller one by one and check if that address is connected or is
2113 * still in the list of pending connections or list of devices to
2114 * report. If not present in either list, then remove it from
2117 list_for_each_entry_safe(b, t, &hdev->le_accept_list, list) {
2118 if (hci_conn_hash_lookup_le(hdev, &b->bdaddr, b->bdaddr_type))
2121 pend_conn = hci_pend_le_action_lookup(&hdev->pend_le_conns,
2124 pend_report = hci_pend_le_action_lookup(&hdev->pend_le_reports,
2128 /* If the device is not likely to connect or report,
2129 * remove it from the acceptlist.
2131 if (!pend_conn && !pend_report) {
2132 hci_le_del_accept_list_sync(hdev, &b->bdaddr,
2140 /* Since all no longer valid accept list entries have been
2141 * removed, walk through the list of pending connections
2142 * and ensure that any new device gets programmed into
2145 * If the list of the devices is larger than the list of
2146 * available accept list entries in the controller, then
2147 * just abort and return filer policy value to not use the
2150 list_for_each_entry(params, &hdev->pend_le_conns, action) {
2151 err = hci_le_add_accept_list_sync(hdev, params, &num_entries);
2156 /* After adding all new pending connections, walk through
2157 * the list of pending reports and also add these to the
2158 * accept list if there is still space. Abort if space runs out.
2160 list_for_each_entry(params, &hdev->pend_le_reports, action) {
2161 err = hci_le_add_accept_list_sync(hdev, params, &num_entries);
2166 /* Use the allowlist unless the following conditions are all true:
2167 * - We are not currently suspending
2168 * - There are 1 or more ADV monitors registered and it's not offloaded
2169 * - Interleaved scanning is not currently using the allowlist
2171 if (!idr_is_empty(&hdev->adv_monitors_idr) && !hdev->suspended &&
2172 hci_get_adv_monitor_offload_ext(hdev) == HCI_ADV_MONITOR_EXT_NONE &&
2173 hdev->interleave_scan_state != INTERLEAVE_SCAN_ALLOWLIST)
2177 filter_policy = err ? 0x00 : 0x01;
2179 /* Enable address resolution when LL Privacy is enabled. */
2180 err = hci_le_set_addr_resolution_enable_sync(hdev, 0x01);
2182 bt_dev_err(hdev, "Unable to enable LL privacy: %d", err);
2184 /* Resume advertising if it was paused */
2185 if (use_ll_privacy(hdev))
2186 hci_resume_advertising_sync(hdev);
2188 /* Select filter policy to use accept list */
2189 return filter_policy;
2192 /* Returns true if an le connection is in the scanning state */
2193 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
2195 struct hci_conn_hash *h = &hdev->conn_hash;
2200 list_for_each_entry_rcu(c, &h->list, list) {
2201 if (c->type == LE_LINK && c->state == BT_CONNECT &&
2202 test_bit(HCI_CONN_SCANNING, &c->flags)) {
2213 static int hci_le_set_ext_scan_param_sync(struct hci_dev *hdev, u8 type,
2214 u16 interval, u16 window,
2215 u8 own_addr_type, u8 filter_policy)
2217 struct hci_cp_le_set_ext_scan_params *cp;
2218 struct hci_cp_le_scan_phy_params *phy;
2219 u8 data[sizeof(*cp) + sizeof(*phy) * 2];
2223 phy = (void *)cp->data;
2225 memset(data, 0, sizeof(data));
2227 cp->own_addr_type = own_addr_type;
2228 cp->filter_policy = filter_policy;
2230 if (scan_1m(hdev) || scan_2m(hdev)) {
2231 cp->scanning_phys |= LE_SCAN_PHY_1M;
2234 phy->interval = cpu_to_le16(interval);
2235 phy->window = cpu_to_le16(window);
2241 if (scan_coded(hdev)) {
2242 cp->scanning_phys |= LE_SCAN_PHY_CODED;
2245 phy->interval = cpu_to_le16(interval);
2246 phy->window = cpu_to_le16(window);
2252 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS,
2253 sizeof(*cp) + sizeof(*phy) * num_phy,
2254 data, HCI_CMD_TIMEOUT);
2257 static int hci_le_set_scan_param_sync(struct hci_dev *hdev, u8 type,
2258 u16 interval, u16 window,
2259 u8 own_addr_type, u8 filter_policy)
2261 struct hci_cp_le_set_scan_param cp;
2263 if (use_ext_scan(hdev))
2264 return hci_le_set_ext_scan_param_sync(hdev, type, interval,
2265 window, own_addr_type,
2268 memset(&cp, 0, sizeof(cp));
2270 cp.interval = cpu_to_le16(interval);
2271 cp.window = cpu_to_le16(window);
2272 cp.own_address_type = own_addr_type;
2273 cp.filter_policy = filter_policy;
2275 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_PARAM,
2276 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2279 static int hci_start_scan_sync(struct hci_dev *hdev, u8 type, u16 interval,
2280 u16 window, u8 own_addr_type, u8 filter_policy,
2285 if (hdev->scanning_paused) {
2286 bt_dev_dbg(hdev, "Scanning is paused for suspend");
2290 err = hci_le_set_scan_param_sync(hdev, type, interval, window,
2291 own_addr_type, filter_policy);
2295 return hci_le_set_scan_enable_sync(hdev, LE_SCAN_ENABLE, filter_dup);
2298 static int hci_passive_scan_sync(struct hci_dev *hdev)
2302 u16 window, interval;
2305 if (hdev->scanning_paused) {
2306 bt_dev_dbg(hdev, "Scanning is paused for suspend");
2310 err = hci_scan_disable_sync(hdev);
2312 bt_dev_err(hdev, "disable scanning failed: %d", err);
2316 /* Set require_privacy to false since no SCAN_REQ are send
2317 * during passive scanning. Not using an non-resolvable address
2318 * here is important so that peer devices using direct
2319 * advertising with our address will be correctly reported
2320 * by the controller.
2322 if (hci_update_random_address_sync(hdev, false, scan_use_rpa(hdev),
2326 if (hdev->enable_advmon_interleave_scan &&
2327 hci_update_interleaved_scan_sync(hdev))
2330 bt_dev_dbg(hdev, "interleave state %d", hdev->interleave_scan_state);
2332 /* Adding or removing entries from the accept list must
2333 * happen before enabling scanning. The controller does
2334 * not allow accept list modification while scanning.
2336 filter_policy = hci_update_accept_list_sync(hdev);
2338 /* When the controller is using random resolvable addresses and
2339 * with that having LE privacy enabled, then controllers with
2340 * Extended Scanner Filter Policies support can now enable support
2341 * for handling directed advertising.
2343 * So instead of using filter polices 0x00 (no acceptlist)
2344 * and 0x01 (acceptlist enabled) use the new filter policies
2345 * 0x02 (no acceptlist) and 0x03 (acceptlist enabled).
2347 if (hci_dev_test_flag(hdev, HCI_PRIVACY) &&
2348 (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY))
2349 filter_policy |= 0x02;
2351 if (hdev->suspended) {
2352 window = hdev->le_scan_window_suspend;
2353 interval = hdev->le_scan_int_suspend;
2354 } else if (hci_is_le_conn_scanning(hdev)) {
2355 window = hdev->le_scan_window_connect;
2356 interval = hdev->le_scan_int_connect;
2357 } else if (hci_is_adv_monitoring(hdev)) {
2358 window = hdev->le_scan_window_adv_monitor;
2359 interval = hdev->le_scan_int_adv_monitor;
2361 window = hdev->le_scan_window;
2362 interval = hdev->le_scan_interval;
2365 bt_dev_dbg(hdev, "LE passive scan with acceptlist = %d", filter_policy);
2367 return hci_start_scan_sync(hdev, LE_SCAN_PASSIVE, interval, window,
2368 own_addr_type, filter_policy,
2369 LE_SCAN_FILTER_DUP_ENABLE);
2372 /* This function controls the passive scanning based on hdev->pend_le_conns
2373 * list. If there are pending LE connection we start the background scanning,
2374 * otherwise we stop it in the following sequence:
2376 * If there are devices to scan:
2378 * Disable Scanning -> Update Accept List ->
2379 * use_ll_privacy((Disable Advertising) -> Disable Resolving List ->
2380 * Update Resolving List -> Enable Resolving List -> (Enable Advertising)) ->
2387 int hci_update_passive_scan_sync(struct hci_dev *hdev)
2391 if (!test_bit(HCI_UP, &hdev->flags) ||
2392 test_bit(HCI_INIT, &hdev->flags) ||
2393 hci_dev_test_flag(hdev, HCI_SETUP) ||
2394 hci_dev_test_flag(hdev, HCI_CONFIG) ||
2395 hci_dev_test_flag(hdev, HCI_AUTO_OFF) ||
2396 hci_dev_test_flag(hdev, HCI_UNREGISTER))
2399 /* No point in doing scanning if LE support hasn't been enabled */
2400 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
2403 /* If discovery is active don't interfere with it */
2404 if (hdev->discovery.state != DISCOVERY_STOPPED)
2407 /* Reset RSSI and UUID filters when starting background scanning
2408 * since these filters are meant for service discovery only.
2410 * The Start Discovery and Start Service Discovery operations
2411 * ensure to set proper values for RSSI threshold and UUID
2412 * filter list. So it is safe to just reset them here.
2414 hci_discovery_filter_clear(hdev);
2416 bt_dev_dbg(hdev, "ADV monitoring is %s",
2417 hci_is_adv_monitoring(hdev) ? "on" : "off");
2419 if (list_empty(&hdev->pend_le_conns) &&
2420 list_empty(&hdev->pend_le_reports) &&
2421 !hci_is_adv_monitoring(hdev) &&
2422 !hci_dev_test_flag(hdev, HCI_PA_SYNC)) {
2423 /* If there is no pending LE connections or devices
2424 * to be scanned for or no ADV monitors, we should stop the
2425 * background scanning.
2428 bt_dev_dbg(hdev, "stopping background scanning");
2430 err = hci_scan_disable_sync(hdev);
2432 bt_dev_err(hdev, "stop background scanning failed: %d",
2435 /* If there is at least one pending LE connection, we should
2436 * keep the background scan running.
2439 /* If controller is connecting, we should not start scanning
2440 * since some controllers are not able to scan and connect at
2443 if (hci_lookup_le_connect(hdev))
2446 bt_dev_dbg(hdev, "start background scanning");
2448 err = hci_passive_scan_sync(hdev);
2450 bt_dev_err(hdev, "start background scanning failed: %d",
2457 static int update_scan_sync(struct hci_dev *hdev, void *data)
2459 return hci_update_scan_sync(hdev);
2462 int hci_update_scan(struct hci_dev *hdev)
2464 return hci_cmd_sync_queue(hdev, update_scan_sync, NULL, NULL);
2467 static int update_passive_scan_sync(struct hci_dev *hdev, void *data)
2469 return hci_update_passive_scan_sync(hdev);
2472 int hci_update_passive_scan(struct hci_dev *hdev)
2474 /* Only queue if it would have any effect */
2475 if (!test_bit(HCI_UP, &hdev->flags) ||
2476 test_bit(HCI_INIT, &hdev->flags) ||
2477 hci_dev_test_flag(hdev, HCI_SETUP) ||
2478 hci_dev_test_flag(hdev, HCI_CONFIG) ||
2479 hci_dev_test_flag(hdev, HCI_AUTO_OFF) ||
2480 hci_dev_test_flag(hdev, HCI_UNREGISTER))
2483 return hci_cmd_sync_queue(hdev, update_passive_scan_sync, NULL, NULL);
2486 int hci_write_sc_support_sync(struct hci_dev *hdev, u8 val)
2490 if (!bredr_sc_enabled(hdev) || lmp_host_sc_capable(hdev))
2493 err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SC_SUPPORT,
2494 sizeof(val), &val, HCI_CMD_TIMEOUT);
2498 hdev->features[1][0] |= LMP_HOST_SC;
2499 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
2501 hdev->features[1][0] &= ~LMP_HOST_SC;
2502 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
2509 int hci_write_ssp_mode_sync(struct hci_dev *hdev, u8 mode)
2513 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED) ||
2514 lmp_host_ssp_capable(hdev))
2517 if (!mode && hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS)) {
2518 __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE,
2519 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
2522 err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_MODE,
2523 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
2527 return hci_write_sc_support_sync(hdev, 0x01);
2530 int hci_write_le_host_supported_sync(struct hci_dev *hdev, u8 le, u8 simul)
2532 struct hci_cp_write_le_host_supported cp;
2534 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) ||
2535 !lmp_bredr_capable(hdev))
2538 /* Check first if we already have the right host state
2539 * (host features set)
2541 if (le == lmp_host_le_capable(hdev) &&
2542 simul == lmp_host_le_br_capable(hdev))
2545 memset(&cp, 0, sizeof(cp));
2550 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED,
2551 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2554 static int hci_powered_update_adv_sync(struct hci_dev *hdev)
2556 struct adv_info *adv, *tmp;
2559 if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
2562 /* If RPA Resolution has not been enable yet it means the
2563 * resolving list is empty and we should attempt to program the
2564 * local IRK in order to support using own_addr_type
2565 * ADDR_LE_DEV_RANDOM_RESOLVED (0x03).
2567 if (!hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION)) {
2568 hci_le_add_resolve_list_sync(hdev, NULL);
2569 hci_le_set_addr_resolution_enable_sync(hdev, 0x01);
2572 /* Make sure the controller has a good default for
2573 * advertising data. This also applies to the case
2574 * where BR/EDR was toggled during the AUTO_OFF phase.
2576 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
2577 list_empty(&hdev->adv_instances)) {
2578 if (ext_adv_capable(hdev)) {
2579 err = hci_setup_ext_adv_instance_sync(hdev, 0x00);
2581 hci_update_scan_rsp_data_sync(hdev, 0x00);
2583 err = hci_update_adv_data_sync(hdev, 0x00);
2585 hci_update_scan_rsp_data_sync(hdev, 0x00);
2588 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
2589 hci_enable_advertising_sync(hdev);
2592 /* Call for each tracked instance to be scheduled */
2593 list_for_each_entry_safe(adv, tmp, &hdev->adv_instances, list)
2594 hci_schedule_adv_instance_sync(hdev, adv->instance, true);
2599 static int hci_write_auth_enable_sync(struct hci_dev *hdev)
2603 link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY);
2604 if (link_sec == test_bit(HCI_AUTH, &hdev->flags))
2607 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_AUTH_ENABLE,
2608 sizeof(link_sec), &link_sec,
2612 int hci_write_fast_connectable_sync(struct hci_dev *hdev, bool enable)
2614 struct hci_cp_write_page_scan_activity cp;
2618 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
2621 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
2624 memset(&cp, 0, sizeof(cp));
2627 type = PAGE_SCAN_TYPE_INTERLACED;
2629 /* 160 msec page scan interval */
2630 cp.interval = cpu_to_le16(0x0100);
2632 type = hdev->def_page_scan_type;
2633 cp.interval = cpu_to_le16(hdev->def_page_scan_int);
2636 cp.window = cpu_to_le16(hdev->def_page_scan_window);
2638 if (__cpu_to_le16(hdev->page_scan_interval) != cp.interval ||
2639 __cpu_to_le16(hdev->page_scan_window) != cp.window) {
2640 err = __hci_cmd_sync_status(hdev,
2641 HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
2642 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
2647 if (hdev->page_scan_type != type)
2648 err = __hci_cmd_sync_status(hdev,
2649 HCI_OP_WRITE_PAGE_SCAN_TYPE,
2650 sizeof(type), &type,
2656 static bool disconnected_accept_list_entries(struct hci_dev *hdev)
2658 struct bdaddr_list *b;
2660 list_for_each_entry(b, &hdev->accept_list, list) {
2661 struct hci_conn *conn;
2663 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &b->bdaddr);
2667 if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG)
2674 static int hci_write_scan_enable_sync(struct hci_dev *hdev, u8 val)
2676 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SCAN_ENABLE,
2681 int hci_update_scan_sync(struct hci_dev *hdev)
2685 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
2688 if (!hdev_is_powered(hdev))
2691 if (mgmt_powering_down(hdev))
2694 if (hdev->scanning_paused)
2697 if (hci_dev_test_flag(hdev, HCI_CONNECTABLE) ||
2698 disconnected_accept_list_entries(hdev))
2701 scan = SCAN_DISABLED;
2703 if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
2704 scan |= SCAN_INQUIRY;
2706 if (test_bit(HCI_PSCAN, &hdev->flags) == !!(scan & SCAN_PAGE) &&
2707 test_bit(HCI_ISCAN, &hdev->flags) == !!(scan & SCAN_INQUIRY))
2710 return hci_write_scan_enable_sync(hdev, scan);
2713 int hci_update_name_sync(struct hci_dev *hdev)
2715 struct hci_cp_write_local_name cp;
2717 memset(&cp, 0, sizeof(cp));
2719 memcpy(cp.name, hdev->dev_name, sizeof(cp.name));
2721 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LOCAL_NAME,
2726 /* This function perform powered update HCI command sequence after the HCI init
2727 * sequence which end up resetting all states, the sequence is as follows:
2729 * HCI_SSP_ENABLED(Enable SSP)
2730 * HCI_LE_ENABLED(Enable LE)
2731 * HCI_LE_ENABLED(use_ll_privacy(Add local IRK to Resolving List) ->
2733 * Enable Authentication
2734 * lmp_bredr_capable(Set Fast Connectable -> Set Scan Type -> Set Class ->
2735 * Set Name -> Set EIR)
2737 int hci_powered_update_sync(struct hci_dev *hdev)
2741 /* Register the available SMP channels (BR/EDR and LE) only when
2742 * successfully powering on the controller. This late
2743 * registration is required so that LE SMP can clearly decide if
2744 * the public address or static address is used.
2748 err = hci_write_ssp_mode_sync(hdev, 0x01);
2752 err = hci_write_le_host_supported_sync(hdev, 0x01, 0x00);
2756 err = hci_powered_update_adv_sync(hdev);
2760 err = hci_write_auth_enable_sync(hdev);
2764 if (lmp_bredr_capable(hdev)) {
2765 if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE))
2766 hci_write_fast_connectable_sync(hdev, true);
2768 hci_write_fast_connectable_sync(hdev, false);
2769 hci_update_scan_sync(hdev);
2770 hci_update_class_sync(hdev);
2771 hci_update_name_sync(hdev);
2772 hci_update_eir_sync(hdev);
2779 * hci_dev_get_bd_addr_from_property - Get the Bluetooth Device Address
2780 * (BD_ADDR) for a HCI device from
2781 * a firmware node property.
2782 * @hdev: The HCI device
2784 * Search the firmware node for 'local-bd-address'.
2786 * All-zero BD addresses are rejected, because those could be properties
2787 * that exist in the firmware tables, but were not updated by the firmware. For
2788 * example, the DTS could define 'local-bd-address', with zero BD addresses.
2790 static void hci_dev_get_bd_addr_from_property(struct hci_dev *hdev)
2792 struct fwnode_handle *fwnode = dev_fwnode(hdev->dev.parent);
2796 ret = fwnode_property_read_u8_array(fwnode, "local-bd-address",
2797 (u8 *)&ba, sizeof(ba));
2798 if (ret < 0 || !bacmp(&ba, BDADDR_ANY))
2801 bacpy(&hdev->public_addr, &ba);
2804 struct hci_init_stage {
2805 int (*func)(struct hci_dev *hdev);
2808 /* Run init stage NULL terminated function table */
2809 static int hci_init_stage_sync(struct hci_dev *hdev,
2810 const struct hci_init_stage *stage)
2814 for (i = 0; stage[i].func; i++) {
2817 err = stage[i].func(hdev);
2825 /* Read Local Version */
2826 static int hci_read_local_version_sync(struct hci_dev *hdev)
2828 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_VERSION,
2829 0, NULL, HCI_CMD_TIMEOUT);
2832 /* Read BD Address */
2833 static int hci_read_bd_addr_sync(struct hci_dev *hdev)
2835 return __hci_cmd_sync_status(hdev, HCI_OP_READ_BD_ADDR,
2836 0, NULL, HCI_CMD_TIMEOUT);
2839 #define HCI_INIT(_func) \
2844 static const struct hci_init_stage hci_init0[] = {
2845 /* HCI_OP_READ_LOCAL_VERSION */
2846 HCI_INIT(hci_read_local_version_sync),
2847 /* HCI_OP_READ_BD_ADDR */
2848 HCI_INIT(hci_read_bd_addr_sync),
2852 int hci_reset_sync(struct hci_dev *hdev)
2856 set_bit(HCI_RESET, &hdev->flags);
2858 err = __hci_cmd_sync_status(hdev, HCI_OP_RESET, 0, NULL,
2866 static int hci_init0_sync(struct hci_dev *hdev)
2870 bt_dev_dbg(hdev, "");
2873 if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) {
2874 err = hci_reset_sync(hdev);
2879 return hci_init_stage_sync(hdev, hci_init0);
2882 static int hci_unconf_init_sync(struct hci_dev *hdev)
2886 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
2889 err = hci_init0_sync(hdev);
2893 if (hci_dev_test_flag(hdev, HCI_SETUP))
2894 hci_debugfs_create_basic(hdev);
2899 /* Read Local Supported Features. */
2900 static int hci_read_local_features_sync(struct hci_dev *hdev)
2902 /* Not all AMP controllers support this command */
2903 if (hdev->dev_type == HCI_AMP && !(hdev->commands[14] & 0x20))
2906 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_FEATURES,
2907 0, NULL, HCI_CMD_TIMEOUT);
2910 /* BR Controller init stage 1 command sequence */
2911 static const struct hci_init_stage br_init1[] = {
2912 /* HCI_OP_READ_LOCAL_FEATURES */
2913 HCI_INIT(hci_read_local_features_sync),
2914 /* HCI_OP_READ_LOCAL_VERSION */
2915 HCI_INIT(hci_read_local_version_sync),
2916 /* HCI_OP_READ_BD_ADDR */
2917 HCI_INIT(hci_read_bd_addr_sync),
2921 /* Read Local Commands */
2922 static int hci_read_local_cmds_sync(struct hci_dev *hdev)
2924 /* All Bluetooth 1.2 and later controllers should support the
2925 * HCI command for reading the local supported commands.
2927 * Unfortunately some controllers indicate Bluetooth 1.2 support,
2928 * but do not have support for this command. If that is the case,
2929 * the driver can quirk the behavior and skip reading the local
2930 * supported commands.
2932 if (hdev->hci_ver > BLUETOOTH_VER_1_1 &&
2933 !test_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks))
2934 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_COMMANDS,
2935 0, NULL, HCI_CMD_TIMEOUT);
2940 /* Read Local AMP Info */
2941 static int hci_read_local_amp_info_sync(struct hci_dev *hdev)
2943 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_AMP_INFO,
2944 0, NULL, HCI_CMD_TIMEOUT);
2947 /* Read Data Blk size */
2948 static int hci_read_data_block_size_sync(struct hci_dev *hdev)
2950 return __hci_cmd_sync_status(hdev, HCI_OP_READ_DATA_BLOCK_SIZE,
2951 0, NULL, HCI_CMD_TIMEOUT);
2954 /* Read Flow Control Mode */
2955 static int hci_read_flow_control_mode_sync(struct hci_dev *hdev)
2957 return __hci_cmd_sync_status(hdev, HCI_OP_READ_FLOW_CONTROL_MODE,
2958 0, NULL, HCI_CMD_TIMEOUT);
2961 /* Read Location Data */
2962 static int hci_read_location_data_sync(struct hci_dev *hdev)
2964 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCATION_DATA,
2965 0, NULL, HCI_CMD_TIMEOUT);
2968 /* AMP Controller init stage 1 command sequence */
2969 static const struct hci_init_stage amp_init1[] = {
2970 /* HCI_OP_READ_LOCAL_VERSION */
2971 HCI_INIT(hci_read_local_version_sync),
2972 /* HCI_OP_READ_LOCAL_COMMANDS */
2973 HCI_INIT(hci_read_local_cmds_sync),
2974 /* HCI_OP_READ_LOCAL_AMP_INFO */
2975 HCI_INIT(hci_read_local_amp_info_sync),
2976 /* HCI_OP_READ_DATA_BLOCK_SIZE */
2977 HCI_INIT(hci_read_data_block_size_sync),
2978 /* HCI_OP_READ_FLOW_CONTROL_MODE */
2979 HCI_INIT(hci_read_flow_control_mode_sync),
2980 /* HCI_OP_READ_LOCATION_DATA */
2981 HCI_INIT(hci_read_location_data_sync),
2984 static int hci_init1_sync(struct hci_dev *hdev)
2988 bt_dev_dbg(hdev, "");
2991 if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) {
2992 err = hci_reset_sync(hdev);
2997 switch (hdev->dev_type) {
2999 hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED;
3000 return hci_init_stage_sync(hdev, br_init1);
3002 hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED;
3003 return hci_init_stage_sync(hdev, amp_init1);
3005 bt_dev_err(hdev, "Unknown device type %d", hdev->dev_type);
3012 /* AMP Controller init stage 2 command sequence */
3013 static const struct hci_init_stage amp_init2[] = {
3014 /* HCI_OP_READ_LOCAL_FEATURES */
3015 HCI_INIT(hci_read_local_features_sync),
3018 /* Read Buffer Size (ACL mtu, max pkt, etc.) */
3019 static int hci_read_buffer_size_sync(struct hci_dev *hdev)
3021 return __hci_cmd_sync_status(hdev, HCI_OP_READ_BUFFER_SIZE,
3022 0, NULL, HCI_CMD_TIMEOUT);
3025 /* Read Class of Device */
3026 static int hci_read_dev_class_sync(struct hci_dev *hdev)
3028 return __hci_cmd_sync_status(hdev, HCI_OP_READ_CLASS_OF_DEV,
3029 0, NULL, HCI_CMD_TIMEOUT);
3032 /* Read Local Name */
3033 static int hci_read_local_name_sync(struct hci_dev *hdev)
3035 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_NAME,
3036 0, NULL, HCI_CMD_TIMEOUT);
3039 /* Read Voice Setting */
3040 static int hci_read_voice_setting_sync(struct hci_dev *hdev)
3042 return __hci_cmd_sync_status(hdev, HCI_OP_READ_VOICE_SETTING,
3043 0, NULL, HCI_CMD_TIMEOUT);
3046 /* Read Number of Supported IAC */
3047 static int hci_read_num_supported_iac_sync(struct hci_dev *hdev)
3049 return __hci_cmd_sync_status(hdev, HCI_OP_READ_NUM_SUPPORTED_IAC,
3050 0, NULL, HCI_CMD_TIMEOUT);
3053 /* Read Current IAC LAP */
3054 static int hci_read_current_iac_lap_sync(struct hci_dev *hdev)
3056 return __hci_cmd_sync_status(hdev, HCI_OP_READ_CURRENT_IAC_LAP,
3057 0, NULL, HCI_CMD_TIMEOUT);
3060 static int hci_set_event_filter_sync(struct hci_dev *hdev, u8 flt_type,
3061 u8 cond_type, bdaddr_t *bdaddr,
3064 struct hci_cp_set_event_filter cp;
3066 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
3069 if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks))
3072 memset(&cp, 0, sizeof(cp));
3073 cp.flt_type = flt_type;
3075 if (flt_type != HCI_FLT_CLEAR_ALL) {
3076 cp.cond_type = cond_type;
3077 bacpy(&cp.addr_conn_flt.bdaddr, bdaddr);
3078 cp.addr_conn_flt.auto_accept = auto_accept;
3081 return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_FLT,
3082 flt_type == HCI_FLT_CLEAR_ALL ?
3083 sizeof(cp.flt_type) : sizeof(cp), &cp,
3087 static int hci_clear_event_filter_sync(struct hci_dev *hdev)
3089 if (!hci_dev_test_flag(hdev, HCI_EVENT_FILTER_CONFIGURED))
3092 /* In theory the state machine should not reach here unless
3093 * a hci_set_event_filter_sync() call succeeds, but we do
3094 * the check both for parity and as a future reminder.
3096 if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks))
3099 return hci_set_event_filter_sync(hdev, HCI_FLT_CLEAR_ALL, 0x00,
3103 /* Connection accept timeout ~20 secs */
3104 static int hci_write_ca_timeout_sync(struct hci_dev *hdev)
3106 __le16 param = cpu_to_le16(0x7d00);
3108 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CA_TIMEOUT,
3109 sizeof(param), ¶m, HCI_CMD_TIMEOUT);
3112 /* BR Controller init stage 2 command sequence */
3113 static const struct hci_init_stage br_init2[] = {
3114 /* HCI_OP_READ_BUFFER_SIZE */
3115 HCI_INIT(hci_read_buffer_size_sync),
3116 /* HCI_OP_READ_CLASS_OF_DEV */
3117 HCI_INIT(hci_read_dev_class_sync),
3118 /* HCI_OP_READ_LOCAL_NAME */
3119 HCI_INIT(hci_read_local_name_sync),
3120 /* HCI_OP_READ_VOICE_SETTING */
3121 HCI_INIT(hci_read_voice_setting_sync),
3122 /* HCI_OP_READ_NUM_SUPPORTED_IAC */
3123 HCI_INIT(hci_read_num_supported_iac_sync),
3124 /* HCI_OP_READ_CURRENT_IAC_LAP */
3125 HCI_INIT(hci_read_current_iac_lap_sync),
3126 /* HCI_OP_SET_EVENT_FLT */
3127 HCI_INIT(hci_clear_event_filter_sync),
3128 /* HCI_OP_WRITE_CA_TIMEOUT */
3129 HCI_INIT(hci_write_ca_timeout_sync),
3133 static int hci_write_ssp_mode_1_sync(struct hci_dev *hdev)
3137 if (!lmp_ssp_capable(hdev) || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
3140 /* When SSP is available, then the host features page
3141 * should also be available as well. However some
3142 * controllers list the max_page as 0 as long as SSP
3143 * has not been enabled. To achieve proper debugging
3144 * output, force the minimum max_page to 1 at least.
3146 hdev->max_page = 0x01;
3148 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SSP_MODE,
3149 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
3152 static int hci_write_eir_sync(struct hci_dev *hdev)
3154 struct hci_cp_write_eir cp;
3156 if (!lmp_ssp_capable(hdev) || hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
3159 memset(hdev->eir, 0, sizeof(hdev->eir));
3160 memset(&cp, 0, sizeof(cp));
3162 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp,
3166 static int hci_write_inquiry_mode_sync(struct hci_dev *hdev)
3170 if (!lmp_inq_rssi_capable(hdev) &&
3171 !test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks))
3174 /* If Extended Inquiry Result events are supported, then
3175 * they are clearly preferred over Inquiry Result with RSSI
3178 mode = lmp_ext_inq_capable(hdev) ? 0x02 : 0x01;
3180 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_INQUIRY_MODE,
3181 sizeof(mode), &mode, HCI_CMD_TIMEOUT);
3184 static int hci_read_inq_rsp_tx_power_sync(struct hci_dev *hdev)
3186 if (!lmp_inq_tx_pwr_capable(hdev))
3189 return __hci_cmd_sync_status(hdev, HCI_OP_READ_INQ_RSP_TX_POWER,
3190 0, NULL, HCI_CMD_TIMEOUT);
3193 static int hci_read_local_ext_features_sync(struct hci_dev *hdev, u8 page)
3195 struct hci_cp_read_local_ext_features cp;
3197 if (!lmp_ext_feat_capable(hdev))
3200 memset(&cp, 0, sizeof(cp));
3203 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_EXT_FEATURES,
3204 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3207 static int hci_read_local_ext_features_1_sync(struct hci_dev *hdev)
3209 return hci_read_local_ext_features_sync(hdev, 0x01);
3212 /* HCI Controller init stage 2 command sequence */
3213 static const struct hci_init_stage hci_init2[] = {
3214 /* HCI_OP_READ_LOCAL_COMMANDS */
3215 HCI_INIT(hci_read_local_cmds_sync),
3216 /* HCI_OP_WRITE_SSP_MODE */
3217 HCI_INIT(hci_write_ssp_mode_1_sync),
3218 /* HCI_OP_WRITE_EIR */
3219 HCI_INIT(hci_write_eir_sync),
3220 /* HCI_OP_WRITE_INQUIRY_MODE */
3221 HCI_INIT(hci_write_inquiry_mode_sync),
3222 /* HCI_OP_READ_INQ_RSP_TX_POWER */
3223 HCI_INIT(hci_read_inq_rsp_tx_power_sync),
3224 /* HCI_OP_READ_LOCAL_EXT_FEATURES */
3225 HCI_INIT(hci_read_local_ext_features_1_sync),
3226 /* HCI_OP_WRITE_AUTH_ENABLE */
3227 HCI_INIT(hci_write_auth_enable_sync),
3231 /* Read LE Buffer Size */
3232 static int hci_le_read_buffer_size_sync(struct hci_dev *hdev)
3234 /* Use Read LE Buffer Size V2 if supported */
3235 if (hdev->commands[41] & 0x20)
3236 return __hci_cmd_sync_status(hdev,
3237 HCI_OP_LE_READ_BUFFER_SIZE_V2,
3238 0, NULL, HCI_CMD_TIMEOUT);
3240 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_BUFFER_SIZE,
3241 0, NULL, HCI_CMD_TIMEOUT);
3244 /* Read LE Local Supported Features */
3245 static int hci_le_read_local_features_sync(struct hci_dev *hdev)
3247 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_LOCAL_FEATURES,
3248 0, NULL, HCI_CMD_TIMEOUT);
3251 /* Read LE Supported States */
3252 static int hci_le_read_supported_states_sync(struct hci_dev *hdev)
3254 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_SUPPORTED_STATES,
3255 0, NULL, HCI_CMD_TIMEOUT);
3258 /* LE Controller init stage 2 command sequence */
3259 static const struct hci_init_stage le_init2[] = {
3260 /* HCI_OP_LE_READ_BUFFER_SIZE */
3261 HCI_INIT(hci_le_read_buffer_size_sync),
3262 /* HCI_OP_LE_READ_LOCAL_FEATURES */
3263 HCI_INIT(hci_le_read_local_features_sync),
3264 /* HCI_OP_LE_READ_SUPPORTED_STATES */
3265 HCI_INIT(hci_le_read_supported_states_sync),
3269 static int hci_init2_sync(struct hci_dev *hdev)
3273 bt_dev_dbg(hdev, "");
3275 if (hdev->dev_type == HCI_AMP)
3276 return hci_init_stage_sync(hdev, amp_init2);
3278 err = hci_init_stage_sync(hdev, hci_init2);
3282 if (lmp_bredr_capable(hdev)) {
3283 err = hci_init_stage_sync(hdev, br_init2);
3287 hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED);
3290 if (lmp_le_capable(hdev)) {
3291 err = hci_init_stage_sync(hdev, le_init2);
3294 /* LE-only controllers have LE implicitly enabled */
3295 if (!lmp_bredr_capable(hdev))
3296 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
3302 static int hci_set_event_mask_sync(struct hci_dev *hdev)
3304 /* The second byte is 0xff instead of 0x9f (two reserved bits
3305 * disabled) since a Broadcom 1.2 dongle doesn't respond to the
3306 * command otherwise.
3308 u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 };
3310 /* CSR 1.1 dongles does not accept any bitfield so don't try to set
3311 * any event mask for pre 1.2 devices.
3313 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
3316 if (lmp_bredr_capable(hdev)) {
3317 events[4] |= 0x01; /* Flow Specification Complete */
3319 /* Don't set Disconnect Complete when suspended as that
3320 * would wakeup the host when disconnecting due to
3323 if (hdev->suspended)
3326 /* Use a different default for LE-only devices */
3327 memset(events, 0, sizeof(events));
3328 events[1] |= 0x20; /* Command Complete */
3329 events[1] |= 0x40; /* Command Status */
3330 events[1] |= 0x80; /* Hardware Error */
3332 /* If the controller supports the Disconnect command, enable
3333 * the corresponding event. In addition enable packet flow
3334 * control related events.
3336 if (hdev->commands[0] & 0x20) {
3337 /* Don't set Disconnect Complete when suspended as that
3338 * would wakeup the host when disconnecting due to
3341 if (!hdev->suspended)
3342 events[0] |= 0x10; /* Disconnection Complete */
3343 events[2] |= 0x04; /* Number of Completed Packets */
3344 events[3] |= 0x02; /* Data Buffer Overflow */
3347 /* If the controller supports the Read Remote Version
3348 * Information command, enable the corresponding event.
3350 if (hdev->commands[2] & 0x80)
3351 events[1] |= 0x08; /* Read Remote Version Information
3355 if (hdev->le_features[0] & HCI_LE_ENCRYPTION) {
3356 events[0] |= 0x80; /* Encryption Change */
3357 events[5] |= 0x80; /* Encryption Key Refresh Complete */
3361 if (lmp_inq_rssi_capable(hdev) ||
3362 test_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks))
3363 events[4] |= 0x02; /* Inquiry Result with RSSI */
3365 if (lmp_ext_feat_capable(hdev))
3366 events[4] |= 0x04; /* Read Remote Extended Features Complete */
3368 if (lmp_esco_capable(hdev)) {
3369 events[5] |= 0x08; /* Synchronous Connection Complete */
3370 events[5] |= 0x10; /* Synchronous Connection Changed */
3373 if (lmp_sniffsubr_capable(hdev))
3374 events[5] |= 0x20; /* Sniff Subrating */
3376 if (lmp_pause_enc_capable(hdev))
3377 events[5] |= 0x80; /* Encryption Key Refresh Complete */
3379 if (lmp_ext_inq_capable(hdev))
3380 events[5] |= 0x40; /* Extended Inquiry Result */
3382 if (lmp_no_flush_capable(hdev))
3383 events[7] |= 0x01; /* Enhanced Flush Complete */
3385 if (lmp_lsto_capable(hdev))
3386 events[6] |= 0x80; /* Link Supervision Timeout Changed */
3388 if (lmp_ssp_capable(hdev)) {
3389 events[6] |= 0x01; /* IO Capability Request */
3390 events[6] |= 0x02; /* IO Capability Response */
3391 events[6] |= 0x04; /* User Confirmation Request */
3392 events[6] |= 0x08; /* User Passkey Request */
3393 events[6] |= 0x10; /* Remote OOB Data Request */
3394 events[6] |= 0x20; /* Simple Pairing Complete */
3395 events[7] |= 0x04; /* User Passkey Notification */
3396 events[7] |= 0x08; /* Keypress Notification */
3397 events[7] |= 0x10; /* Remote Host Supported
3398 * Features Notification
3402 if (lmp_le_capable(hdev))
3403 events[7] |= 0x20; /* LE Meta-Event */
3405 return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_MASK,
3406 sizeof(events), events, HCI_CMD_TIMEOUT);
3409 static int hci_read_stored_link_key_sync(struct hci_dev *hdev)
3411 struct hci_cp_read_stored_link_key cp;
3413 if (!(hdev->commands[6] & 0x20) ||
3414 test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks))
3417 memset(&cp, 0, sizeof(cp));
3418 bacpy(&cp.bdaddr, BDADDR_ANY);
3421 return __hci_cmd_sync_status(hdev, HCI_OP_READ_STORED_LINK_KEY,
3422 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3425 static int hci_setup_link_policy_sync(struct hci_dev *hdev)
3427 struct hci_cp_write_def_link_policy cp;
3428 u16 link_policy = 0;
3430 if (!(hdev->commands[5] & 0x10))
3433 memset(&cp, 0, sizeof(cp));
3435 if (lmp_rswitch_capable(hdev))
3436 link_policy |= HCI_LP_RSWITCH;
3437 if (lmp_hold_capable(hdev))
3438 link_policy |= HCI_LP_HOLD;
3439 if (lmp_sniff_capable(hdev))
3440 link_policy |= HCI_LP_SNIFF;
3441 if (lmp_park_capable(hdev))
3442 link_policy |= HCI_LP_PARK;
3444 cp.policy = cpu_to_le16(link_policy);
3446 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_DEF_LINK_POLICY,
3447 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3450 static int hci_read_page_scan_activity_sync(struct hci_dev *hdev)
3452 if (!(hdev->commands[8] & 0x01))
3455 return __hci_cmd_sync_status(hdev, HCI_OP_READ_PAGE_SCAN_ACTIVITY,
3456 0, NULL, HCI_CMD_TIMEOUT);
3459 static int hci_read_def_err_data_reporting_sync(struct hci_dev *hdev)
3461 if (!(hdev->commands[18] & 0x04) ||
3462 !(hdev->features[0][6] & LMP_ERR_DATA_REPORTING))
3465 return __hci_cmd_sync_status(hdev, HCI_OP_READ_DEF_ERR_DATA_REPORTING,
3466 0, NULL, HCI_CMD_TIMEOUT);
3469 static int hci_read_page_scan_type_sync(struct hci_dev *hdev)
3471 /* Some older Broadcom based Bluetooth 1.2 controllers do not
3472 * support the Read Page Scan Type command. Check support for
3473 * this command in the bit mask of supported commands.
3475 if (!(hdev->commands[13] & 0x01))
3478 return __hci_cmd_sync_status(hdev, HCI_OP_READ_PAGE_SCAN_TYPE,
3479 0, NULL, HCI_CMD_TIMEOUT);
3482 /* Read features beyond page 1 if available */
3483 static int hci_read_local_ext_features_all_sync(struct hci_dev *hdev)
3488 if (!lmp_ext_feat_capable(hdev))
3491 for (page = 2; page < HCI_MAX_PAGES && page <= hdev->max_page;
3493 err = hci_read_local_ext_features_sync(hdev, page);
3501 /* HCI Controller init stage 3 command sequence */
3502 static const struct hci_init_stage hci_init3[] = {
3503 /* HCI_OP_SET_EVENT_MASK */
3504 HCI_INIT(hci_set_event_mask_sync),
3505 /* HCI_OP_READ_STORED_LINK_KEY */
3506 HCI_INIT(hci_read_stored_link_key_sync),
3507 /* HCI_OP_WRITE_DEF_LINK_POLICY */
3508 HCI_INIT(hci_setup_link_policy_sync),
3509 /* HCI_OP_READ_PAGE_SCAN_ACTIVITY */
3510 HCI_INIT(hci_read_page_scan_activity_sync),
3511 /* HCI_OP_READ_DEF_ERR_DATA_REPORTING */
3512 HCI_INIT(hci_read_def_err_data_reporting_sync),
3513 /* HCI_OP_READ_PAGE_SCAN_TYPE */
3514 HCI_INIT(hci_read_page_scan_type_sync),
3515 /* HCI_OP_READ_LOCAL_EXT_FEATURES */
3516 HCI_INIT(hci_read_local_ext_features_all_sync),
3520 static int hci_le_set_event_mask_sync(struct hci_dev *hdev)
3524 if (!lmp_le_capable(hdev))
3527 memset(events, 0, sizeof(events));
3529 if (hdev->le_features[0] & HCI_LE_ENCRYPTION)
3530 events[0] |= 0x10; /* LE Long Term Key Request */
3532 /* If controller supports the Connection Parameters Request
3533 * Link Layer Procedure, enable the corresponding event.
3535 if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC)
3536 /* LE Remote Connection Parameter Request */
3539 /* If the controller supports the Data Length Extension
3540 * feature, enable the corresponding event.
3542 if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT)
3543 events[0] |= 0x40; /* LE Data Length Change */
3545 /* If the controller supports LL Privacy feature or LE Extended Adv,
3546 * enable the corresponding event.
3548 if (use_enhanced_conn_complete(hdev))
3549 events[1] |= 0x02; /* LE Enhanced Connection Complete */
3551 /* If the controller supports Extended Scanner Filter
3552 * Policies, enable the corresponding event.
3554 if (hdev->le_features[0] & HCI_LE_EXT_SCAN_POLICY)
3555 events[1] |= 0x04; /* LE Direct Advertising Report */
3557 /* If the controller supports Channel Selection Algorithm #2
3558 * feature, enable the corresponding event.
3560 if (hdev->le_features[1] & HCI_LE_CHAN_SEL_ALG2)
3561 events[2] |= 0x08; /* LE Channel Selection Algorithm */
3563 /* If the controller supports the LE Set Scan Enable command,
3564 * enable the corresponding advertising report event.
3566 if (hdev->commands[26] & 0x08)
3567 events[0] |= 0x02; /* LE Advertising Report */
3569 /* If the controller supports the LE Create Connection
3570 * command, enable the corresponding event.
3572 if (hdev->commands[26] & 0x10)
3573 events[0] |= 0x01; /* LE Connection Complete */
3575 /* If the controller supports the LE Connection Update
3576 * command, enable the corresponding event.
3578 if (hdev->commands[27] & 0x04)
3579 events[0] |= 0x04; /* LE Connection Update Complete */
3581 /* If the controller supports the LE Read Remote Used Features
3582 * command, enable the corresponding event.
3584 if (hdev->commands[27] & 0x20)
3585 /* LE Read Remote Used Features Complete */
3588 /* If the controller supports the LE Read Local P-256
3589 * Public Key command, enable the corresponding event.
3591 if (hdev->commands[34] & 0x02)
3592 /* LE Read Local P-256 Public Key Complete */
3595 /* If the controller supports the LE Generate DHKey
3596 * command, enable the corresponding event.
3598 if (hdev->commands[34] & 0x04)
3599 events[1] |= 0x01; /* LE Generate DHKey Complete */
3601 /* If the controller supports the LE Set Default PHY or
3602 * LE Set PHY commands, enable the corresponding event.
3604 if (hdev->commands[35] & (0x20 | 0x40))
3605 events[1] |= 0x08; /* LE PHY Update Complete */
3607 /* If the controller supports LE Set Extended Scan Parameters
3608 * and LE Set Extended Scan Enable commands, enable the
3609 * corresponding event.
3611 if (use_ext_scan(hdev))
3612 events[1] |= 0x10; /* LE Extended Advertising Report */
3614 /* If the controller supports the LE Extended Advertising
3615 * command, enable the corresponding event.
3617 if (ext_adv_capable(hdev))
3618 events[2] |= 0x02; /* LE Advertising Set Terminated */
3620 if (cis_capable(hdev)) {
3621 events[3] |= 0x01; /* LE CIS Established */
3622 if (cis_peripheral_capable(hdev))
3623 events[3] |= 0x02; /* LE CIS Request */
3626 if (bis_capable(hdev)) {
3627 events[3] |= 0x04; /* LE Create BIG Complete */
3628 events[3] |= 0x08; /* LE Terminate BIG Complete */
3629 events[3] |= 0x10; /* LE BIG Sync Established */
3630 events[3] |= 0x20; /* LE BIG Sync Loss */
3633 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EVENT_MASK,
3634 sizeof(events), events, HCI_CMD_TIMEOUT);
3637 /* Read LE Advertising Channel TX Power */
3638 static int hci_le_read_adv_tx_power_sync(struct hci_dev *hdev)
3640 if ((hdev->commands[25] & 0x40) && !ext_adv_capable(hdev)) {
3641 /* HCI TS spec forbids mixing of legacy and extended
3642 * advertising commands wherein READ_ADV_TX_POWER is
3643 * also included. So do not call it if extended adv
3644 * is supported otherwise controller will return
3645 * COMMAND_DISALLOWED for extended commands.
3647 return __hci_cmd_sync_status(hdev,
3648 HCI_OP_LE_READ_ADV_TX_POWER,
3649 0, NULL, HCI_CMD_TIMEOUT);
3655 /* Read LE Min/Max Tx Power*/
3656 static int hci_le_read_tx_power_sync(struct hci_dev *hdev)
3658 if (!(hdev->commands[38] & 0x80) ||
3659 test_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks))
3662 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_TRANSMIT_POWER,
3663 0, NULL, HCI_CMD_TIMEOUT);
3666 /* Read LE Accept List Size */
3667 static int hci_le_read_accept_list_size_sync(struct hci_dev *hdev)
3669 if (!(hdev->commands[26] & 0x40))
3672 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
3673 0, NULL, HCI_CMD_TIMEOUT);
3676 /* Clear LE Accept List */
3677 static int hci_le_clear_accept_list_sync(struct hci_dev *hdev)
3679 if (!(hdev->commands[26] & 0x80))
3682 return __hci_cmd_sync_status(hdev, HCI_OP_LE_CLEAR_ACCEPT_LIST, 0, NULL,
3686 /* Read LE Resolving List Size */
3687 static int hci_le_read_resolv_list_size_sync(struct hci_dev *hdev)
3689 if (!(hdev->commands[34] & 0x40))
3692 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_RESOLV_LIST_SIZE,
3693 0, NULL, HCI_CMD_TIMEOUT);
3696 /* Clear LE Resolving List */
3697 static int hci_le_clear_resolv_list_sync(struct hci_dev *hdev)
3699 if (!(hdev->commands[34] & 0x20))
3702 return __hci_cmd_sync_status(hdev, HCI_OP_LE_CLEAR_RESOLV_LIST, 0, NULL,
3706 /* Set RPA timeout */
3707 static int hci_le_set_rpa_timeout_sync(struct hci_dev *hdev)
3709 __le16 timeout = cpu_to_le16(hdev->rpa_timeout);
3711 if (!(hdev->commands[35] & 0x04))
3714 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_RPA_TIMEOUT,
3715 sizeof(timeout), &timeout,
3719 /* Read LE Maximum Data Length */
3720 static int hci_le_read_max_data_len_sync(struct hci_dev *hdev)
3722 if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT))
3725 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL,
3729 /* Read LE Suggested Default Data Length */
3730 static int hci_le_read_def_data_len_sync(struct hci_dev *hdev)
3732 if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT))
3735 return __hci_cmd_sync_status(hdev, HCI_OP_LE_READ_DEF_DATA_LEN, 0, NULL,
3739 /* Read LE Number of Supported Advertising Sets */
3740 static int hci_le_read_num_support_adv_sets_sync(struct hci_dev *hdev)
3742 if (!ext_adv_capable(hdev))
3745 return __hci_cmd_sync_status(hdev,
3746 HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
3747 0, NULL, HCI_CMD_TIMEOUT);
3750 /* Write LE Host Supported */
3751 static int hci_set_le_support_sync(struct hci_dev *hdev)
3753 struct hci_cp_write_le_host_supported cp;
3755 /* LE-only devices do not support explicit enablement */
3756 if (!lmp_bredr_capable(hdev))
3759 memset(&cp, 0, sizeof(cp));
3761 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) {
3766 if (cp.le == lmp_host_le_capable(hdev))
3769 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED,
3770 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3773 /* LE Set Host Feature */
3774 static int hci_le_set_host_feature_sync(struct hci_dev *hdev)
3776 struct hci_cp_le_set_host_feature cp;
3778 if (!iso_capable(hdev))
3781 memset(&cp, 0, sizeof(cp));
3783 /* Isochronous Channels (Host Support) */
3787 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_HOST_FEATURE,
3788 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3791 /* LE Controller init stage 3 command sequence */
3792 static const struct hci_init_stage le_init3[] = {
3793 /* HCI_OP_LE_SET_EVENT_MASK */
3794 HCI_INIT(hci_le_set_event_mask_sync),
3795 /* HCI_OP_LE_READ_ADV_TX_POWER */
3796 HCI_INIT(hci_le_read_adv_tx_power_sync),
3797 /* HCI_OP_LE_READ_TRANSMIT_POWER */
3798 HCI_INIT(hci_le_read_tx_power_sync),
3799 /* HCI_OP_LE_READ_ACCEPT_LIST_SIZE */
3800 HCI_INIT(hci_le_read_accept_list_size_sync),
3801 /* HCI_OP_LE_CLEAR_ACCEPT_LIST */
3802 HCI_INIT(hci_le_clear_accept_list_sync),
3803 /* HCI_OP_LE_READ_RESOLV_LIST_SIZE */
3804 HCI_INIT(hci_le_read_resolv_list_size_sync),
3805 /* HCI_OP_LE_CLEAR_RESOLV_LIST */
3806 HCI_INIT(hci_le_clear_resolv_list_sync),
3807 /* HCI_OP_LE_SET_RPA_TIMEOUT */
3808 HCI_INIT(hci_le_set_rpa_timeout_sync),
3809 /* HCI_OP_LE_READ_MAX_DATA_LEN */
3810 HCI_INIT(hci_le_read_max_data_len_sync),
3811 /* HCI_OP_LE_READ_DEF_DATA_LEN */
3812 HCI_INIT(hci_le_read_def_data_len_sync),
3813 /* HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS */
3814 HCI_INIT(hci_le_read_num_support_adv_sets_sync),
3815 /* HCI_OP_WRITE_LE_HOST_SUPPORTED */
3816 HCI_INIT(hci_set_le_support_sync),
3817 /* HCI_OP_LE_SET_HOST_FEATURE */
3818 HCI_INIT(hci_le_set_host_feature_sync),
3822 static int hci_init3_sync(struct hci_dev *hdev)
3826 bt_dev_dbg(hdev, "");
3828 err = hci_init_stage_sync(hdev, hci_init3);
3832 if (lmp_le_capable(hdev))
3833 return hci_init_stage_sync(hdev, le_init3);
3838 static int hci_delete_stored_link_key_sync(struct hci_dev *hdev)
3840 struct hci_cp_delete_stored_link_key cp;
3842 /* Some Broadcom based Bluetooth controllers do not support the
3843 * Delete Stored Link Key command. They are clearly indicating its
3844 * absence in the bit mask of supported commands.
3846 * Check the supported commands and only if the command is marked
3847 * as supported send it. If not supported assume that the controller
3848 * does not have actual support for stored link keys which makes this
3849 * command redundant anyway.
3851 * Some controllers indicate that they support handling deleting
3852 * stored link keys, but they don't. The quirk lets a driver
3853 * just disable this command.
3855 if (!(hdev->commands[6] & 0x80) ||
3856 test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks))
3859 memset(&cp, 0, sizeof(cp));
3860 bacpy(&cp.bdaddr, BDADDR_ANY);
3861 cp.delete_all = 0x01;
3863 return __hci_cmd_sync_status(hdev, HCI_OP_DELETE_STORED_LINK_KEY,
3864 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3867 static int hci_set_event_mask_page_2_sync(struct hci_dev *hdev)
3869 u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
3870 bool changed = false;
3872 /* Set event mask page 2 if the HCI command for it is supported */
3873 if (!(hdev->commands[22] & 0x04))
3876 /* If Connectionless Peripheral Broadcast central role is supported
3877 * enable all necessary events for it.
3879 if (lmp_cpb_central_capable(hdev)) {
3880 events[1] |= 0x40; /* Triggered Clock Capture */
3881 events[1] |= 0x80; /* Synchronization Train Complete */
3882 events[2] |= 0x08; /* Truncated Page Complete */
3883 events[2] |= 0x20; /* CPB Channel Map Change */
3887 /* If Connectionless Peripheral Broadcast peripheral role is supported
3888 * enable all necessary events for it.
3890 if (lmp_cpb_peripheral_capable(hdev)) {
3891 events[2] |= 0x01; /* Synchronization Train Received */
3892 events[2] |= 0x02; /* CPB Receive */
3893 events[2] |= 0x04; /* CPB Timeout */
3894 events[2] |= 0x10; /* Peripheral Page Response Timeout */
3898 /* Enable Authenticated Payload Timeout Expired event if supported */
3899 if (lmp_ping_capable(hdev) || hdev->le_features[0] & HCI_LE_PING) {
3904 /* Some Broadcom based controllers indicate support for Set Event
3905 * Mask Page 2 command, but then actually do not support it. Since
3906 * the default value is all bits set to zero, the command is only
3907 * required if the event mask has to be changed. In case no change
3908 * to the event mask is needed, skip this command.
3913 return __hci_cmd_sync_status(hdev, HCI_OP_SET_EVENT_MASK_PAGE_2,
3914 sizeof(events), events, HCI_CMD_TIMEOUT);
3917 /* Read local codec list if the HCI command is supported */
3918 static int hci_read_local_codecs_sync(struct hci_dev *hdev)
3920 if (!(hdev->commands[29] & 0x20))
3923 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_CODECS, 0, NULL,
3927 /* Read local pairing options if the HCI command is supported */
3928 static int hci_read_local_pairing_opts_sync(struct hci_dev *hdev)
3930 if (!(hdev->commands[41] & 0x08))
3933 return __hci_cmd_sync_status(hdev, HCI_OP_READ_LOCAL_PAIRING_OPTS,
3934 0, NULL, HCI_CMD_TIMEOUT);
3937 /* Get MWS transport configuration if the HCI command is supported */
3938 static int hci_get_mws_transport_config_sync(struct hci_dev *hdev)
3940 if (!(hdev->commands[30] & 0x08))
3943 return __hci_cmd_sync_status(hdev, HCI_OP_GET_MWS_TRANSPORT_CONFIG,
3944 0, NULL, HCI_CMD_TIMEOUT);
3947 /* Check for Synchronization Train support */
3948 static int hci_read_sync_train_params_sync(struct hci_dev *hdev)
3950 if (!lmp_sync_train_capable(hdev))
3953 return __hci_cmd_sync_status(hdev, HCI_OP_READ_SYNC_TRAIN_PARAMS,
3954 0, NULL, HCI_CMD_TIMEOUT);
3957 /* Enable Secure Connections if supported and configured */
3958 static int hci_write_sc_support_1_sync(struct hci_dev *hdev)
3962 if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED) ||
3963 !bredr_sc_enabled(hdev))
3966 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SC_SUPPORT,
3967 sizeof(support), &support,
3971 /* Set erroneous data reporting if supported to the wideband speech
3974 static int hci_set_err_data_report_sync(struct hci_dev *hdev)
3976 struct hci_cp_write_def_err_data_reporting cp;
3977 bool enabled = hci_dev_test_flag(hdev, HCI_WIDEBAND_SPEECH_ENABLED);
3979 if (!(hdev->commands[18] & 0x08) ||
3980 !(hdev->features[0][6] & LMP_ERR_DATA_REPORTING))
3983 if (enabled == hdev->err_data_reporting)
3986 memset(&cp, 0, sizeof(cp));
3987 cp.err_data_reporting = enabled ? ERR_DATA_REPORTING_ENABLED :
3988 ERR_DATA_REPORTING_DISABLED;
3990 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
3991 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
3994 static const struct hci_init_stage hci_init4[] = {
3995 /* HCI_OP_DELETE_STORED_LINK_KEY */
3996 HCI_INIT(hci_delete_stored_link_key_sync),
3997 /* HCI_OP_SET_EVENT_MASK_PAGE_2 */
3998 HCI_INIT(hci_set_event_mask_page_2_sync),
3999 /* HCI_OP_READ_LOCAL_CODECS */
4000 HCI_INIT(hci_read_local_codecs_sync),
4001 /* HCI_OP_READ_LOCAL_PAIRING_OPTS */
4002 HCI_INIT(hci_read_local_pairing_opts_sync),
4003 /* HCI_OP_GET_MWS_TRANSPORT_CONFIG */
4004 HCI_INIT(hci_get_mws_transport_config_sync),
4005 /* HCI_OP_READ_SYNC_TRAIN_PARAMS */
4006 HCI_INIT(hci_read_sync_train_params_sync),
4007 /* HCI_OP_WRITE_SC_SUPPORT */
4008 HCI_INIT(hci_write_sc_support_1_sync),
4009 /* HCI_OP_WRITE_DEF_ERR_DATA_REPORTING */
4010 HCI_INIT(hci_set_err_data_report_sync),
4014 /* Set Suggested Default Data Length to maximum if supported */
4015 static int hci_le_set_write_def_data_len_sync(struct hci_dev *hdev)
4017 struct hci_cp_le_write_def_data_len cp;
4019 if (!(hdev->le_features[0] & HCI_LE_DATA_LEN_EXT))
4022 memset(&cp, 0, sizeof(cp));
4023 cp.tx_len = cpu_to_le16(hdev->le_max_tx_len);
4024 cp.tx_time = cpu_to_le16(hdev->le_max_tx_time);
4026 return __hci_cmd_sync_status(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN,
4027 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4030 /* Set Default PHY parameters if command is supported */
4031 static int hci_le_set_default_phy_sync(struct hci_dev *hdev)
4033 struct hci_cp_le_set_default_phy cp;
4035 if (!(hdev->commands[35] & 0x20))
4038 memset(&cp, 0, sizeof(cp));
4040 cp.tx_phys = hdev->le_tx_def_phys;
4041 cp.rx_phys = hdev->le_rx_def_phys;
4043 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_DEFAULT_PHY,
4044 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4047 static const struct hci_init_stage le_init4[] = {
4048 /* HCI_OP_LE_WRITE_DEF_DATA_LEN */
4049 HCI_INIT(hci_le_set_write_def_data_len_sync),
4050 /* HCI_OP_LE_SET_DEFAULT_PHY */
4051 HCI_INIT(hci_le_set_default_phy_sync),
4055 static int hci_init4_sync(struct hci_dev *hdev)
4059 bt_dev_dbg(hdev, "");
4061 err = hci_init_stage_sync(hdev, hci_init4);
4065 if (lmp_le_capable(hdev))
4066 return hci_init_stage_sync(hdev, le_init4);
4071 static int hci_init_sync(struct hci_dev *hdev)
4075 err = hci_init1_sync(hdev);
4079 if (hci_dev_test_flag(hdev, HCI_SETUP))
4080 hci_debugfs_create_basic(hdev);
4082 err = hci_init2_sync(hdev);
4086 /* HCI_PRIMARY covers both single-mode LE, BR/EDR and dual-mode
4087 * BR/EDR/LE type controllers. AMP controllers only need the
4088 * first two stages of init.
4090 if (hdev->dev_type != HCI_PRIMARY)
4093 err = hci_init3_sync(hdev);
4097 err = hci_init4_sync(hdev);
4101 /* This function is only called when the controller is actually in
4102 * configured state. When the controller is marked as unconfigured,
4103 * this initialization procedure is not run.
4105 * It means that it is possible that a controller runs through its
4106 * setup phase and then discovers missing settings. If that is the
4107 * case, then this function will not be called. It then will only
4108 * be called during the config phase.
4110 * So only when in setup phase or config phase, create the debugfs
4111 * entries and register the SMP channels.
4113 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4114 !hci_dev_test_flag(hdev, HCI_CONFIG))
4117 hci_debugfs_create_common(hdev);
4119 if (lmp_bredr_capable(hdev))
4120 hci_debugfs_create_bredr(hdev);
4122 if (lmp_le_capable(hdev))
4123 hci_debugfs_create_le(hdev);
4128 #define HCI_QUIRK_BROKEN(_quirk, _desc) { HCI_QUIRK_BROKEN_##_quirk, _desc }
4130 static const struct {
4131 unsigned long quirk;
4133 } hci_broken_table[] = {
4134 HCI_QUIRK_BROKEN(LOCAL_COMMANDS,
4135 "HCI Read Local Supported Commands not supported"),
4136 HCI_QUIRK_BROKEN(STORED_LINK_KEY,
4137 "HCI Delete Stored Link Key command is advertised, "
4138 "but not supported."),
4139 HCI_QUIRK_BROKEN(READ_TRANSMIT_POWER,
4140 "HCI Read Transmit Power Level command is advertised, "
4141 "but not supported."),
4142 HCI_QUIRK_BROKEN(FILTER_CLEAR_ALL,
4143 "HCI Set Event Filter command not supported."),
4144 HCI_QUIRK_BROKEN(ENHANCED_SETUP_SYNC_CONN,
4145 "HCI Enhanced Setup Synchronous Connection command is "
4146 "advertised, but not supported.")
4149 /* This function handles hdev setup stage:
4152 * Setup address if HCI_QUIRK_USE_BDADDR_PROPERTY is set.
4154 static int hci_dev_setup_sync(struct hci_dev *hdev)
4157 bool invalid_bdaddr;
4160 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4161 !test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks))
4164 bt_dev_dbg(hdev, "");
4166 hci_sock_dev_event(hdev, HCI_DEV_SETUP);
4169 ret = hdev->setup(hdev);
4171 for (i = 0; i < ARRAY_SIZE(hci_broken_table); i++) {
4172 if (test_bit(hci_broken_table[i].quirk, &hdev->quirks))
4173 bt_dev_warn(hdev, "%s", hci_broken_table[i].desc);
4176 /* The transport driver can set the quirk to mark the
4177 * BD_ADDR invalid before creating the HCI device or in
4178 * its setup callback.
4180 invalid_bdaddr = test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
4183 if (test_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks)) {
4184 if (!bacmp(&hdev->public_addr, BDADDR_ANY))
4185 hci_dev_get_bd_addr_from_property(hdev);
4187 if (bacmp(&hdev->public_addr, BDADDR_ANY) &&
4189 ret = hdev->set_bdaddr(hdev,
4190 &hdev->public_addr);
4192 /* If setting of the BD_ADDR from the device
4193 * property succeeds, then treat the address
4194 * as valid even if the invalid BD_ADDR
4195 * quirk indicates otherwise.
4198 invalid_bdaddr = false;
4203 /* The transport driver can set these quirks before
4204 * creating the HCI device or in its setup callback.
4206 * For the invalid BD_ADDR quirk it is possible that
4207 * it becomes a valid address if the bootloader does
4208 * provide it (see above).
4210 * In case any of them is set, the controller has to
4211 * start up as unconfigured.
4213 if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) ||
4215 hci_dev_set_flag(hdev, HCI_UNCONFIGURED);
4217 /* For an unconfigured controller it is required to
4218 * read at least the version information provided by
4219 * the Read Local Version Information command.
4221 * If the set_bdaddr driver callback is provided, then
4222 * also the original Bluetooth public device address
4223 * will be read using the Read BD Address command.
4225 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
4226 return hci_unconf_init_sync(hdev);
4231 /* This function handles hdev init stage:
4233 * Calls hci_dev_setup_sync to perform setup stage
4234 * Calls hci_init_sync to perform HCI command init sequence
4236 static int hci_dev_init_sync(struct hci_dev *hdev)
4240 bt_dev_dbg(hdev, "");
4242 atomic_set(&hdev->cmd_cnt, 1);
4243 set_bit(HCI_INIT, &hdev->flags);
4245 ret = hci_dev_setup_sync(hdev);
4247 if (hci_dev_test_flag(hdev, HCI_CONFIG)) {
4248 /* If public address change is configured, ensure that
4249 * the address gets programmed. If the driver does not
4250 * support changing the public address, fail the power
4253 if (bacmp(&hdev->public_addr, BDADDR_ANY) &&
4255 ret = hdev->set_bdaddr(hdev, &hdev->public_addr);
4257 ret = -EADDRNOTAVAIL;
4261 if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED) &&
4262 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
4263 ret = hci_init_sync(hdev);
4264 if (!ret && hdev->post_init)
4265 ret = hdev->post_init(hdev);
4269 /* If the HCI Reset command is clearing all diagnostic settings,
4270 * then they need to be reprogrammed after the init procedure
4273 if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) &&
4274 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4275 hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) && hdev->set_diag)
4276 ret = hdev->set_diag(hdev, true);
4278 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
4283 clear_bit(HCI_INIT, &hdev->flags);
4288 int hci_dev_open_sync(struct hci_dev *hdev)
4292 bt_dev_dbg(hdev, "");
4294 if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) {
4299 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4300 !hci_dev_test_flag(hdev, HCI_CONFIG)) {
4301 /* Check for rfkill but allow the HCI setup stage to
4302 * proceed (which in itself doesn't cause any RF activity).
4304 if (hci_dev_test_flag(hdev, HCI_RFKILLED)) {
4309 /* Check for valid public address or a configured static
4310 * random address, but let the HCI setup proceed to
4311 * be able to determine if there is a public address
4314 * In case of user channel usage, it is not important
4315 * if a public address or static random address is
4318 * This check is only valid for BR/EDR controllers
4319 * since AMP controllers do not have an address.
4321 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4322 hdev->dev_type == HCI_PRIMARY &&
4323 !bacmp(&hdev->bdaddr, BDADDR_ANY) &&
4324 !bacmp(&hdev->static_addr, BDADDR_ANY)) {
4325 ret = -EADDRNOTAVAIL;
4330 if (test_bit(HCI_UP, &hdev->flags)) {
4335 if (hdev->open(hdev)) {
4340 set_bit(HCI_RUNNING, &hdev->flags);
4341 hci_sock_dev_event(hdev, HCI_DEV_OPEN);
4343 ret = hci_dev_init_sync(hdev);
4346 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
4347 hci_adv_instances_set_rpa_expired(hdev, true);
4348 set_bit(HCI_UP, &hdev->flags);
4349 hci_sock_dev_event(hdev, HCI_DEV_UP);
4350 hci_leds_update_powered(hdev, true);
4351 if (!hci_dev_test_flag(hdev, HCI_SETUP) &&
4352 !hci_dev_test_flag(hdev, HCI_CONFIG) &&
4353 !hci_dev_test_flag(hdev, HCI_UNCONFIGURED) &&
4354 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4355 hci_dev_test_flag(hdev, HCI_MGMT) &&
4356 hdev->dev_type == HCI_PRIMARY) {
4357 ret = hci_powered_update_sync(hdev);
4360 /* Init failed, cleanup */
4361 flush_work(&hdev->tx_work);
4363 /* Since hci_rx_work() is possible to awake new cmd_work
4364 * it should be flushed first to avoid unexpected call of
4367 flush_work(&hdev->rx_work);
4368 flush_work(&hdev->cmd_work);
4370 skb_queue_purge(&hdev->cmd_q);
4371 skb_queue_purge(&hdev->rx_q);
4376 if (hdev->sent_cmd) {
4377 kfree_skb(hdev->sent_cmd);
4378 hdev->sent_cmd = NULL;
4381 clear_bit(HCI_RUNNING, &hdev->flags);
4382 hci_sock_dev_event(hdev, HCI_DEV_CLOSE);
4385 hdev->flags &= BIT(HCI_RAW);
4392 /* This function requires the caller holds hdev->lock */
4393 static void hci_pend_le_actions_clear(struct hci_dev *hdev)
4395 struct hci_conn_params *p;
4397 list_for_each_entry(p, &hdev->le_conn_params, list) {
4399 hci_conn_drop(p->conn);
4400 hci_conn_put(p->conn);
4403 list_del_init(&p->action);
4406 BT_DBG("All LE pending actions cleared");
4409 int hci_dev_close_sync(struct hci_dev *hdev)
4414 bt_dev_dbg(hdev, "");
4416 cancel_delayed_work(&hdev->power_off);
4417 cancel_delayed_work(&hdev->ncmd_timer);
4419 hci_request_cancel_all(hdev);
4421 if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) &&
4422 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4423 test_bit(HCI_UP, &hdev->flags)) {
4424 /* Execute vendor specific shutdown routine */
4426 err = hdev->shutdown(hdev);
4429 if (!test_and_clear_bit(HCI_UP, &hdev->flags)) {
4430 cancel_delayed_work_sync(&hdev->cmd_timer);
4434 hci_leds_update_powered(hdev, false);
4436 /* Flush RX and TX works */
4437 flush_work(&hdev->tx_work);
4438 flush_work(&hdev->rx_work);
4440 if (hdev->discov_timeout > 0) {
4441 hdev->discov_timeout = 0;
4442 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
4443 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
4446 if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE))
4447 cancel_delayed_work(&hdev->service_cache);
4449 if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4450 struct adv_info *adv_instance;
4452 cancel_delayed_work_sync(&hdev->rpa_expired);
4454 list_for_each_entry(adv_instance, &hdev->adv_instances, list)
4455 cancel_delayed_work_sync(&adv_instance->rpa_expired_cb);
4458 /* Avoid potential lockdep warnings from the *_flush() calls by
4459 * ensuring the workqueue is empty up front.
4461 drain_workqueue(hdev->workqueue);
4465 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4467 auto_off = hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF);
4469 if (!auto_off && hdev->dev_type == HCI_PRIMARY &&
4470 !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
4471 hci_dev_test_flag(hdev, HCI_MGMT))
4472 __mgmt_power_off(hdev);
4474 hci_inquiry_cache_flush(hdev);
4475 hci_pend_le_actions_clear(hdev);
4476 hci_conn_hash_flush(hdev);
4477 /* Prevent data races on hdev->smp_data or hdev->smp_bredr_data */
4478 smp_unregister(hdev);
4479 hci_dev_unlock(hdev);
4481 hci_sock_dev_event(hdev, HCI_DEV_DOWN);
4483 if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
4484 aosp_do_close(hdev);
4485 msft_do_close(hdev);
4492 skb_queue_purge(&hdev->cmd_q);
4493 atomic_set(&hdev->cmd_cnt, 1);
4494 if (test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks) &&
4495 !auto_off && !hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
4496 set_bit(HCI_INIT, &hdev->flags);
4497 hci_reset_sync(hdev);
4498 clear_bit(HCI_INIT, &hdev->flags);
4501 /* flush cmd work */
4502 flush_work(&hdev->cmd_work);
4505 skb_queue_purge(&hdev->rx_q);
4506 skb_queue_purge(&hdev->cmd_q);
4507 skb_queue_purge(&hdev->raw_q);
4509 /* Drop last sent command */
4510 if (hdev->sent_cmd) {
4511 cancel_delayed_work_sync(&hdev->cmd_timer);
4512 kfree_skb(hdev->sent_cmd);
4513 hdev->sent_cmd = NULL;
4516 clear_bit(HCI_RUNNING, &hdev->flags);
4517 hci_sock_dev_event(hdev, HCI_DEV_CLOSE);
4519 /* After this point our queues are empty and no tasks are scheduled. */
4523 hdev->flags &= BIT(HCI_RAW);
4524 hci_dev_clear_volatile_flags(hdev);
4526 /* Controller radio is available but is currently powered down */
4527 hdev->amp_status = AMP_STATUS_POWERED_DOWN;
4529 memset(hdev->eir, 0, sizeof(hdev->eir));
4530 memset(hdev->dev_class, 0, sizeof(hdev->dev_class));
4531 bacpy(&hdev->random_addr, BDADDR_ANY);
4537 /* This function perform power on HCI command sequence as follows:
4539 * If controller is already up (HCI_UP) performs hci_powered_update_sync
4540 * sequence otherwise run hci_dev_open_sync which will follow with
4541 * hci_powered_update_sync after the init sequence is completed.
4543 static int hci_power_on_sync(struct hci_dev *hdev)
4547 if (test_bit(HCI_UP, &hdev->flags) &&
4548 hci_dev_test_flag(hdev, HCI_MGMT) &&
4549 hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) {
4550 cancel_delayed_work(&hdev->power_off);
4551 return hci_powered_update_sync(hdev);
4554 err = hci_dev_open_sync(hdev);
4558 /* During the HCI setup phase, a few error conditions are
4559 * ignored and they need to be checked now. If they are still
4560 * valid, it is important to return the device back off.
4562 if (hci_dev_test_flag(hdev, HCI_RFKILLED) ||
4563 hci_dev_test_flag(hdev, HCI_UNCONFIGURED) ||
4564 (hdev->dev_type == HCI_PRIMARY &&
4565 !bacmp(&hdev->bdaddr, BDADDR_ANY) &&
4566 !bacmp(&hdev->static_addr, BDADDR_ANY))) {
4567 hci_dev_clear_flag(hdev, HCI_AUTO_OFF);
4568 hci_dev_close_sync(hdev);
4569 } else if (hci_dev_test_flag(hdev, HCI_AUTO_OFF)) {
4570 queue_delayed_work(hdev->req_workqueue, &hdev->power_off,
4571 HCI_AUTO_OFF_TIMEOUT);
4574 if (hci_dev_test_and_clear_flag(hdev, HCI_SETUP)) {
4575 /* For unconfigured devices, set the HCI_RAW flag
4576 * so that userspace can easily identify them.
4578 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
4579 set_bit(HCI_RAW, &hdev->flags);
4581 /* For fully configured devices, this will send
4582 * the Index Added event. For unconfigured devices,
4583 * it will send Unconfigued Index Added event.
4585 * Devices with HCI_QUIRK_RAW_DEVICE are ignored
4586 * and no event will be send.
4588 mgmt_index_added(hdev);
4589 } else if (hci_dev_test_and_clear_flag(hdev, HCI_CONFIG)) {
4590 /* When the controller is now configured, then it
4591 * is important to clear the HCI_RAW flag.
4593 if (!hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
4594 clear_bit(HCI_RAW, &hdev->flags);
4596 /* Powering on the controller with HCI_CONFIG set only
4597 * happens with the transition from unconfigured to
4598 * configured. This will send the Index Added event.
4600 mgmt_index_added(hdev);
4606 static int hci_remote_name_cancel_sync(struct hci_dev *hdev, bdaddr_t *addr)
4608 struct hci_cp_remote_name_req_cancel cp;
4610 memset(&cp, 0, sizeof(cp));
4611 bacpy(&cp.bdaddr, addr);
4613 return __hci_cmd_sync_status(hdev, HCI_OP_REMOTE_NAME_REQ_CANCEL,
4614 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4617 int hci_stop_discovery_sync(struct hci_dev *hdev)
4619 struct discovery_state *d = &hdev->discovery;
4620 struct inquiry_entry *e;
4623 bt_dev_dbg(hdev, "state %u", hdev->discovery.state);
4625 if (d->state == DISCOVERY_FINDING || d->state == DISCOVERY_STOPPING) {
4626 if (test_bit(HCI_INQUIRY, &hdev->flags)) {
4627 err = __hci_cmd_sync_status(hdev, HCI_OP_INQUIRY_CANCEL,
4628 0, NULL, HCI_CMD_TIMEOUT);
4633 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
4634 cancel_delayed_work(&hdev->le_scan_disable);
4635 cancel_delayed_work(&hdev->le_scan_restart);
4637 err = hci_scan_disable_sync(hdev);
4643 err = hci_scan_disable_sync(hdev);
4648 /* Resume advertising if it was paused */
4649 if (use_ll_privacy(hdev))
4650 hci_resume_advertising_sync(hdev);
4652 /* No further actions needed for LE-only discovery */
4653 if (d->type == DISCOV_TYPE_LE)
4656 if (d->state == DISCOVERY_RESOLVING || d->state == DISCOVERY_STOPPING) {
4657 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY,
4662 return hci_remote_name_cancel_sync(hdev, &e->data.bdaddr);
4668 static int hci_disconnect_phy_link_sync(struct hci_dev *hdev, u16 handle,
4671 struct hci_cp_disconn_phy_link cp;
4673 memset(&cp, 0, sizeof(cp));
4674 cp.phy_handle = HCI_PHY_HANDLE(handle);
4677 return __hci_cmd_sync_status(hdev, HCI_OP_DISCONN_PHY_LINK,
4678 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4681 static int hci_disconnect_sync(struct hci_dev *hdev, struct hci_conn *conn,
4684 struct hci_cp_disconnect cp;
4686 if (conn->type == AMP_LINK)
4687 return hci_disconnect_phy_link_sync(hdev, conn->handle, reason);
4689 memset(&cp, 0, sizeof(cp));
4690 cp.handle = cpu_to_le16(conn->handle);
4693 /* Wait for HCI_EV_DISCONN_COMPLETE not HCI_EV_CMD_STATUS when not
4696 if (!hdev->suspended)
4697 return __hci_cmd_sync_status_sk(hdev, HCI_OP_DISCONNECT,
4699 HCI_EV_DISCONN_COMPLETE,
4700 HCI_CMD_TIMEOUT, NULL);
4702 return __hci_cmd_sync_status(hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp,
4706 static int hci_le_connect_cancel_sync(struct hci_dev *hdev,
4707 struct hci_conn *conn)
4709 if (test_bit(HCI_CONN_SCANNING, &conn->flags))
4712 return __hci_cmd_sync_status(hdev, HCI_OP_LE_CREATE_CONN_CANCEL,
4713 6, &conn->dst, HCI_CMD_TIMEOUT);
4716 static int hci_connect_cancel_sync(struct hci_dev *hdev, struct hci_conn *conn)
4718 if (conn->type == LE_LINK)
4719 return hci_le_connect_cancel_sync(hdev, conn);
4721 if (hdev->hci_ver < BLUETOOTH_VER_1_2)
4724 return __hci_cmd_sync_status(hdev, HCI_OP_CREATE_CONN_CANCEL,
4725 6, &conn->dst, HCI_CMD_TIMEOUT);
4728 static int hci_reject_sco_sync(struct hci_dev *hdev, struct hci_conn *conn,
4731 struct hci_cp_reject_sync_conn_req cp;
4733 memset(&cp, 0, sizeof(cp));
4734 bacpy(&cp.bdaddr, &conn->dst);
4737 /* SCO rejection has its own limited set of
4738 * allowed error values (0x0D-0x0F).
4740 if (reason < 0x0d || reason > 0x0f)
4741 cp.reason = HCI_ERROR_REJ_LIMITED_RESOURCES;
4743 return __hci_cmd_sync_status(hdev, HCI_OP_REJECT_SYNC_CONN_REQ,
4744 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4747 static int hci_reject_conn_sync(struct hci_dev *hdev, struct hci_conn *conn,
4750 struct hci_cp_reject_conn_req cp;
4752 if (conn->type == SCO_LINK || conn->type == ESCO_LINK)
4753 return hci_reject_sco_sync(hdev, conn, reason);
4755 memset(&cp, 0, sizeof(cp));
4756 bacpy(&cp.bdaddr, &conn->dst);
4759 return __hci_cmd_sync_status(hdev, HCI_OP_REJECT_CONN_REQ,
4760 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
4763 int hci_abort_conn_sync(struct hci_dev *hdev, struct hci_conn *conn, u8 reason)
4767 switch (conn->state) {
4770 return hci_disconnect_sync(hdev, conn, reason);
4772 err = hci_connect_cancel_sync(hdev, conn);
4773 /* Cleanup hci_conn object if it cannot be cancelled as it
4774 * likelly means the controller and host stack are out of sync.
4778 hci_conn_failed(conn, err);
4779 hci_dev_unlock(hdev);
4783 return hci_reject_conn_sync(hdev, conn, reason);
4785 conn->state = BT_CLOSED;
4792 static int hci_disconnect_all_sync(struct hci_dev *hdev, u8 reason)
4794 struct hci_conn *conn, *tmp;
4797 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
4798 err = hci_abort_conn_sync(hdev, conn, reason);
4806 /* This function perform power off HCI command sequence as follows:
4810 * Disconnect all connections
4811 * hci_dev_close_sync
4813 static int hci_power_off_sync(struct hci_dev *hdev)
4817 /* If controller is already down there is nothing to do */
4818 if (!test_bit(HCI_UP, &hdev->flags))
4821 if (test_bit(HCI_ISCAN, &hdev->flags) ||
4822 test_bit(HCI_PSCAN, &hdev->flags)) {
4823 err = hci_write_scan_enable_sync(hdev, 0x00);
4828 err = hci_clear_adv_sync(hdev, NULL, false);
4832 err = hci_stop_discovery_sync(hdev);
4836 /* Terminated due to Power Off */
4837 err = hci_disconnect_all_sync(hdev, HCI_ERROR_REMOTE_POWER_OFF);
4841 return hci_dev_close_sync(hdev);
4844 int hci_set_powered_sync(struct hci_dev *hdev, u8 val)
4847 return hci_power_on_sync(hdev);
4849 return hci_power_off_sync(hdev);
4852 static int hci_write_iac_sync(struct hci_dev *hdev)
4854 struct hci_cp_write_current_iac_lap cp;
4856 if (!hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
4859 memset(&cp, 0, sizeof(cp));
4861 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) {
4862 /* Limited discoverable mode */
4863 cp.num_iac = min_t(u8, hdev->num_iac, 2);
4864 cp.iac_lap[0] = 0x00; /* LIAC */
4865 cp.iac_lap[1] = 0x8b;
4866 cp.iac_lap[2] = 0x9e;
4867 cp.iac_lap[3] = 0x33; /* GIAC */
4868 cp.iac_lap[4] = 0x8b;
4869 cp.iac_lap[5] = 0x9e;
4871 /* General discoverable mode */
4873 cp.iac_lap[0] = 0x33; /* GIAC */
4874 cp.iac_lap[1] = 0x8b;
4875 cp.iac_lap[2] = 0x9e;
4878 return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CURRENT_IAC_LAP,
4879 (cp.num_iac * 3) + 1, &cp,
4883 int hci_update_discoverable_sync(struct hci_dev *hdev)
4887 if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
4888 err = hci_write_iac_sync(hdev);
4892 err = hci_update_scan_sync(hdev);
4896 err = hci_update_class_sync(hdev);
4901 /* Advertising instances don't use the global discoverable setting, so
4902 * only update AD if advertising was enabled using Set Advertising.
4904 if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) {
4905 err = hci_update_adv_data_sync(hdev, 0x00);
4909 /* Discoverable mode affects the local advertising
4910 * address in limited privacy mode.
4912 if (hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY)) {
4913 if (ext_adv_capable(hdev))
4914 err = hci_start_ext_adv_sync(hdev, 0x00);
4916 err = hci_enable_advertising_sync(hdev);
4923 static int update_discoverable_sync(struct hci_dev *hdev, void *data)
4925 return hci_update_discoverable_sync(hdev);
4928 int hci_update_discoverable(struct hci_dev *hdev)
4930 /* Only queue if it would have any effect */
4931 if (hdev_is_powered(hdev) &&
4932 hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
4933 hci_dev_test_flag(hdev, HCI_DISCOVERABLE) &&
4934 hci_dev_test_flag(hdev, HCI_LIMITED_PRIVACY))
4935 return hci_cmd_sync_queue(hdev, update_discoverable_sync, NULL,
4941 int hci_update_connectable_sync(struct hci_dev *hdev)
4945 err = hci_update_scan_sync(hdev);
4949 /* If BR/EDR is not enabled and we disable advertising as a
4950 * by-product of disabling connectable, we need to update the
4951 * advertising flags.
4953 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
4954 err = hci_update_adv_data_sync(hdev, hdev->cur_adv_instance);
4956 /* Update the advertising parameters if necessary */
4957 if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
4958 !list_empty(&hdev->adv_instances)) {
4959 if (ext_adv_capable(hdev))
4960 err = hci_start_ext_adv_sync(hdev,
4961 hdev->cur_adv_instance);
4963 err = hci_enable_advertising_sync(hdev);
4969 return hci_update_passive_scan_sync(hdev);
4972 static int hci_inquiry_sync(struct hci_dev *hdev, u8 length)
4974 const u8 giac[3] = { 0x33, 0x8b, 0x9e };
4975 const u8 liac[3] = { 0x00, 0x8b, 0x9e };
4976 struct hci_cp_inquiry cp;
4978 bt_dev_dbg(hdev, "");
4980 if (hci_dev_test_flag(hdev, HCI_INQUIRY))
4984 hci_inquiry_cache_flush(hdev);
4985 hci_dev_unlock(hdev);
4987 memset(&cp, 0, sizeof(cp));
4989 if (hdev->discovery.limited)
4990 memcpy(&cp.lap, liac, sizeof(cp.lap));
4992 memcpy(&cp.lap, giac, sizeof(cp.lap));
4996 return __hci_cmd_sync_status(hdev, HCI_OP_INQUIRY,
4997 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5000 static int hci_active_scan_sync(struct hci_dev *hdev, uint16_t interval)
5003 /* Accept list is not used for discovery */
5004 u8 filter_policy = 0x00;
5005 /* Default is to enable duplicates filter */
5006 u8 filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
5009 bt_dev_dbg(hdev, "");
5011 /* If controller is scanning, it means the passive scanning is
5012 * running. Thus, we should temporarily stop it in order to set the
5013 * discovery scanning parameters.
5015 err = hci_scan_disable_sync(hdev);
5017 bt_dev_err(hdev, "Unable to disable scanning: %d", err);
5021 cancel_interleave_scan(hdev);
5023 /* Pause advertising since active scanning disables address resolution
5024 * which advertising depend on in order to generate its RPAs.
5026 if (use_ll_privacy(hdev)) {
5027 err = hci_pause_advertising_sync(hdev);
5029 bt_dev_err(hdev, "pause advertising failed: %d", err);
5034 /* Disable address resolution while doing active scanning since the
5035 * accept list shall not be used and all reports shall reach the host
5038 err = hci_le_set_addr_resolution_enable_sync(hdev, 0x00);
5040 bt_dev_err(hdev, "Unable to disable Address Resolution: %d",
5045 /* All active scans will be done with either a resolvable private
5046 * address (when privacy feature has been enabled) or non-resolvable
5049 err = hci_update_random_address_sync(hdev, true, scan_use_rpa(hdev),
5052 own_addr_type = ADDR_LE_DEV_PUBLIC;
5054 if (hci_is_adv_monitoring(hdev)) {
5055 /* Duplicate filter should be disabled when some advertisement
5056 * monitor is activated, otherwise AdvMon can only receive one
5057 * advertisement for one peer(*) during active scanning, and
5058 * might report loss to these peers.
5060 * Note that different controllers have different meanings of
5061 * |duplicate|. Some of them consider packets with the same
5062 * address as duplicate, and others consider packets with the
5063 * same address and the same RSSI as duplicate. Although in the
5064 * latter case we don't need to disable duplicate filter, but
5065 * it is common to have active scanning for a short period of
5066 * time, the power impact should be neglectable.
5068 filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
5071 err = hci_start_scan_sync(hdev, LE_SCAN_ACTIVE, interval,
5072 hdev->le_scan_window_discovery,
5073 own_addr_type, filter_policy, filter_dup);
5078 /* Resume advertising if it was paused */
5079 if (use_ll_privacy(hdev))
5080 hci_resume_advertising_sync(hdev);
5082 /* Resume passive scanning */
5083 hci_update_passive_scan_sync(hdev);
5087 static int hci_start_interleaved_discovery_sync(struct hci_dev *hdev)
5091 bt_dev_dbg(hdev, "");
5093 err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery * 2);
5097 return hci_inquiry_sync(hdev, DISCOV_BREDR_INQUIRY_LEN);
5100 int hci_start_discovery_sync(struct hci_dev *hdev)
5102 unsigned long timeout;
5105 bt_dev_dbg(hdev, "type %u", hdev->discovery.type);
5107 switch (hdev->discovery.type) {
5108 case DISCOV_TYPE_BREDR:
5109 return hci_inquiry_sync(hdev, DISCOV_BREDR_INQUIRY_LEN);
5110 case DISCOV_TYPE_INTERLEAVED:
5111 /* When running simultaneous discovery, the LE scanning time
5112 * should occupy the whole discovery time sine BR/EDR inquiry
5113 * and LE scanning are scheduled by the controller.
5115 * For interleaving discovery in comparison, BR/EDR inquiry
5116 * and LE scanning are done sequentially with separate
5119 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY,
5121 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
5122 /* During simultaneous discovery, we double LE scan
5123 * interval. We must leave some time for the controller
5124 * to do BR/EDR inquiry.
5126 err = hci_start_interleaved_discovery_sync(hdev);
5130 timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout);
5131 err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery);
5133 case DISCOV_TYPE_LE:
5134 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
5135 err = hci_active_scan_sync(hdev, hdev->le_scan_int_discovery);
5144 bt_dev_dbg(hdev, "timeout %u ms", jiffies_to_msecs(timeout));
5146 /* When service discovery is used and the controller has a
5147 * strict duplicate filter, it is important to remember the
5148 * start and duration of the scan. This is required for
5149 * restarting scanning during the discovery phase.
5151 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks) &&
5152 hdev->discovery.result_filtering) {
5153 hdev->discovery.scan_start = jiffies;
5154 hdev->discovery.scan_duration = timeout;
5157 queue_delayed_work(hdev->req_workqueue, &hdev->le_scan_disable,
5162 static void hci_suspend_monitor_sync(struct hci_dev *hdev)
5164 switch (hci_get_adv_monitor_offload_ext(hdev)) {
5165 case HCI_ADV_MONITOR_EXT_MSFT:
5166 msft_suspend_sync(hdev);
5173 /* This function disables discovery and mark it as paused */
5174 static int hci_pause_discovery_sync(struct hci_dev *hdev)
5176 int old_state = hdev->discovery.state;
5179 /* If discovery already stopped/stopping/paused there nothing to do */
5180 if (old_state == DISCOVERY_STOPPED || old_state == DISCOVERY_STOPPING ||
5181 hdev->discovery_paused)
5184 hci_discovery_set_state(hdev, DISCOVERY_STOPPING);
5185 err = hci_stop_discovery_sync(hdev);
5189 hdev->discovery_paused = true;
5190 hdev->discovery_old_state = old_state;
5191 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
5196 static int hci_update_event_filter_sync(struct hci_dev *hdev)
5198 struct bdaddr_list_with_flags *b;
5199 u8 scan = SCAN_DISABLED;
5200 bool scanning = test_bit(HCI_PSCAN, &hdev->flags);
5203 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
5206 /* Some fake CSR controllers lock up after setting this type of
5207 * filter, so avoid sending the request altogether.
5209 if (test_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks))
5212 /* Always clear event filter when starting */
5213 hci_clear_event_filter_sync(hdev);
5215 list_for_each_entry(b, &hdev->accept_list, list) {
5216 if (!(b->flags & HCI_CONN_FLAG_REMOTE_WAKEUP))
5219 bt_dev_dbg(hdev, "Adding event filters for %pMR", &b->bdaddr);
5221 err = hci_set_event_filter_sync(hdev, HCI_FLT_CONN_SETUP,
5222 HCI_CONN_SETUP_ALLOW_BDADDR,
5224 HCI_CONN_SETUP_AUTO_ON);
5226 bt_dev_dbg(hdev, "Failed to set event filter for %pMR",
5232 if (scan && !scanning)
5233 hci_write_scan_enable_sync(hdev, scan);
5234 else if (!scan && scanning)
5235 hci_write_scan_enable_sync(hdev, scan);
5240 /* This function disables scan (BR and LE) and mark it as paused */
5241 static int hci_pause_scan_sync(struct hci_dev *hdev)
5243 if (hdev->scanning_paused)
5246 /* Disable page scan if enabled */
5247 if (test_bit(HCI_PSCAN, &hdev->flags))
5248 hci_write_scan_enable_sync(hdev, SCAN_DISABLED);
5250 hci_scan_disable_sync(hdev);
5252 hdev->scanning_paused = true;
5257 /* This function performs the HCI suspend procedures in the follow order:
5259 * Pause discovery (active scanning/inquiry)
5260 * Pause Directed Advertising/Advertising
5261 * Pause Scanning (passive scanning in case discovery was not active)
5262 * Disconnect all connections
5263 * Set suspend_status to BT_SUSPEND_DISCONNECT if hdev cannot wakeup
5265 * Update event mask (only set events that are allowed to wake up the host)
5266 * Update event filter (with devices marked with HCI_CONN_FLAG_REMOTE_WAKEUP)
5267 * Update passive scanning (lower duty cycle)
5268 * Set suspend_status to BT_SUSPEND_CONFIGURE_WAKE
5270 int hci_suspend_sync(struct hci_dev *hdev)
5274 /* If marked as suspended there nothing to do */
5275 if (hdev->suspended)
5278 /* Mark device as suspended */
5279 hdev->suspended = true;
5281 /* Pause discovery if not already stopped */
5282 hci_pause_discovery_sync(hdev);
5284 /* Pause other advertisements */
5285 hci_pause_advertising_sync(hdev);
5287 /* Suspend monitor filters */
5288 hci_suspend_monitor_sync(hdev);
5290 /* Prevent disconnects from causing scanning to be re-enabled */
5291 hci_pause_scan_sync(hdev);
5293 if (hci_conn_count(hdev)) {
5294 /* Soft disconnect everything (power off) */
5295 err = hci_disconnect_all_sync(hdev, HCI_ERROR_REMOTE_POWER_OFF);
5297 /* Set state to BT_RUNNING so resume doesn't notify */
5298 hdev->suspend_state = BT_RUNNING;
5299 hci_resume_sync(hdev);
5303 /* Update event mask so only the allowed event can wakeup the
5306 hci_set_event_mask_sync(hdev);
5309 /* Only configure accept list if disconnect succeeded and wake
5310 * isn't being prevented.
5312 if (!hdev->wakeup || !hdev->wakeup(hdev)) {
5313 hdev->suspend_state = BT_SUSPEND_DISCONNECT;
5317 /* Unpause to take care of updating scanning params */
5318 hdev->scanning_paused = false;
5320 /* Enable event filter for paired devices */
5321 hci_update_event_filter_sync(hdev);
5323 /* Update LE passive scan if enabled */
5324 hci_update_passive_scan_sync(hdev);
5326 /* Pause scan changes again. */
5327 hdev->scanning_paused = true;
5329 hdev->suspend_state = BT_SUSPEND_CONFIGURE_WAKE;
5334 /* This function resumes discovery */
5335 static int hci_resume_discovery_sync(struct hci_dev *hdev)
5339 /* If discovery not paused there nothing to do */
5340 if (!hdev->discovery_paused)
5343 hdev->discovery_paused = false;
5345 hci_discovery_set_state(hdev, DISCOVERY_STARTING);
5347 err = hci_start_discovery_sync(hdev);
5349 hci_discovery_set_state(hdev, err ? DISCOVERY_STOPPED :
5355 static void hci_resume_monitor_sync(struct hci_dev *hdev)
5357 switch (hci_get_adv_monitor_offload_ext(hdev)) {
5358 case HCI_ADV_MONITOR_EXT_MSFT:
5359 msft_resume_sync(hdev);
5366 /* This function resume scan and reset paused flag */
5367 static int hci_resume_scan_sync(struct hci_dev *hdev)
5369 if (!hdev->scanning_paused)
5372 hdev->scanning_paused = false;
5374 hci_update_scan_sync(hdev);
5376 /* Reset passive scanning to normal */
5377 hci_update_passive_scan_sync(hdev);
5382 /* This function performs the HCI suspend procedures in the follow order:
5384 * Restore event mask
5385 * Clear event filter
5386 * Update passive scanning (normal duty cycle)
5387 * Resume Directed Advertising/Advertising
5388 * Resume discovery (active scanning/inquiry)
5390 int hci_resume_sync(struct hci_dev *hdev)
5392 /* If not marked as suspended there nothing to do */
5393 if (!hdev->suspended)
5396 hdev->suspended = false;
5398 /* Restore event mask */
5399 hci_set_event_mask_sync(hdev);
5401 /* Clear any event filters and restore scan state */
5402 hci_clear_event_filter_sync(hdev);
5404 /* Resume scanning */
5405 hci_resume_scan_sync(hdev);
5407 /* Resume monitor filters */
5408 hci_resume_monitor_sync(hdev);
5410 /* Resume other advertisements */
5411 hci_resume_advertising_sync(hdev);
5413 /* Resume discovery */
5414 hci_resume_discovery_sync(hdev);
5419 static bool conn_use_rpa(struct hci_conn *conn)
5421 struct hci_dev *hdev = conn->hdev;
5423 return hci_dev_test_flag(hdev, HCI_PRIVACY);
5426 static int hci_le_ext_directed_advertising_sync(struct hci_dev *hdev,
5427 struct hci_conn *conn)
5429 struct hci_cp_le_set_ext_adv_params cp;
5431 bdaddr_t random_addr;
5434 err = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn),
5439 /* Set require_privacy to false so that the remote device has a
5440 * chance of identifying us.
5442 err = hci_get_random_address(hdev, false, conn_use_rpa(conn), NULL,
5443 &own_addr_type, &random_addr);
5447 memset(&cp, 0, sizeof(cp));
5449 cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_DIRECT_IND);
5450 cp.own_addr_type = own_addr_type;
5451 cp.channel_map = hdev->le_adv_channel_map;
5452 cp.tx_power = HCI_TX_POWER_INVALID;
5453 cp.primary_phy = HCI_ADV_PHY_1M;
5454 cp.secondary_phy = HCI_ADV_PHY_1M;
5455 cp.handle = 0x00; /* Use instance 0 for directed adv */
5456 cp.own_addr_type = own_addr_type;
5457 cp.peer_addr_type = conn->dst_type;
5458 bacpy(&cp.peer_addr, &conn->dst);
5460 /* As per Core Spec 5.2 Vol 2, PART E, Sec 7.8.53, for
5461 * advertising_event_property LE_LEGACY_ADV_DIRECT_IND
5462 * does not supports advertising data when the advertising set already
5463 * contains some, the controller shall return erroc code 'Invalid
5464 * HCI Command Parameters(0x12).
5465 * So it is required to remove adv set for handle 0x00. since we use
5466 * instance 0 for directed adv.
5468 err = hci_remove_ext_adv_instance_sync(hdev, cp.handle, NULL);
5472 err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS,
5473 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5477 /* Check if random address need to be updated */
5478 if (own_addr_type == ADDR_LE_DEV_RANDOM &&
5479 bacmp(&random_addr, BDADDR_ANY) &&
5480 bacmp(&random_addr, &hdev->random_addr)) {
5481 err = hci_set_adv_set_random_addr_sync(hdev, 0x00,
5487 return hci_enable_ext_advertising_sync(hdev, 0x00);
5490 static int hci_le_directed_advertising_sync(struct hci_dev *hdev,
5491 struct hci_conn *conn)
5493 struct hci_cp_le_set_adv_param cp;
5498 if (ext_adv_capable(hdev))
5499 return hci_le_ext_directed_advertising_sync(hdev, conn);
5501 /* Clear the HCI_LE_ADV bit temporarily so that the
5502 * hci_update_random_address knows that it's safe to go ahead
5503 * and write a new random address. The flag will be set back on
5504 * as soon as the SET_ADV_ENABLE HCI command completes.
5506 hci_dev_clear_flag(hdev, HCI_LE_ADV);
5508 /* Set require_privacy to false so that the remote device has a
5509 * chance of identifying us.
5511 status = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn),
5516 memset(&cp, 0, sizeof(cp));
5518 /* Some controllers might reject command if intervals are not
5519 * within range for undirected advertising.
5520 * BCM20702A0 is known to be affected by this.
5522 cp.min_interval = cpu_to_le16(0x0020);
5523 cp.max_interval = cpu_to_le16(0x0020);
5525 cp.type = LE_ADV_DIRECT_IND;
5526 cp.own_address_type = own_addr_type;
5527 cp.direct_addr_type = conn->dst_type;
5528 bacpy(&cp.direct_addr, &conn->dst);
5529 cp.channel_map = hdev->le_adv_channel_map;
5531 status = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_PARAM,
5532 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5538 return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
5539 sizeof(enable), &enable, HCI_CMD_TIMEOUT);
5542 static void set_ext_conn_params(struct hci_conn *conn,
5543 struct hci_cp_le_ext_conn_param *p)
5545 struct hci_dev *hdev = conn->hdev;
5547 memset(p, 0, sizeof(*p));
5549 p->scan_interval = cpu_to_le16(hdev->le_scan_int_connect);
5550 p->scan_window = cpu_to_le16(hdev->le_scan_window_connect);
5551 p->conn_interval_min = cpu_to_le16(conn->le_conn_min_interval);
5552 p->conn_interval_max = cpu_to_le16(conn->le_conn_max_interval);
5553 p->conn_latency = cpu_to_le16(conn->le_conn_latency);
5554 p->supervision_timeout = cpu_to_le16(conn->le_supv_timeout);
5555 p->min_ce_len = cpu_to_le16(0x0000);
5556 p->max_ce_len = cpu_to_le16(0x0000);
5559 static int hci_le_ext_create_conn_sync(struct hci_dev *hdev,
5560 struct hci_conn *conn, u8 own_addr_type)
5562 struct hci_cp_le_ext_create_conn *cp;
5563 struct hci_cp_le_ext_conn_param *p;
5564 u8 data[sizeof(*cp) + sizeof(*p) * 3];
5568 p = (void *)cp->data;
5570 memset(cp, 0, sizeof(*cp));
5572 bacpy(&cp->peer_addr, &conn->dst);
5573 cp->peer_addr_type = conn->dst_type;
5574 cp->own_addr_type = own_addr_type;
5578 if (scan_1m(hdev)) {
5579 cp->phys |= LE_SCAN_PHY_1M;
5580 set_ext_conn_params(conn, p);
5586 if (scan_2m(hdev)) {
5587 cp->phys |= LE_SCAN_PHY_2M;
5588 set_ext_conn_params(conn, p);
5594 if (scan_coded(hdev)) {
5595 cp->phys |= LE_SCAN_PHY_CODED;
5596 set_ext_conn_params(conn, p);
5601 return __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_EXT_CREATE_CONN,
5603 HCI_EV_LE_ENHANCED_CONN_COMPLETE,
5604 conn->conn_timeout, NULL);
5607 int hci_le_create_conn_sync(struct hci_dev *hdev, struct hci_conn *conn)
5609 struct hci_cp_le_create_conn cp;
5610 struct hci_conn_params *params;
5614 /* If requested to connect as peripheral use directed advertising */
5615 if (conn->role == HCI_ROLE_SLAVE) {
5616 /* If we're active scanning and simultaneous roles is not
5617 * enabled simply reject the attempt.
5619 if (hci_dev_test_flag(hdev, HCI_LE_SCAN) &&
5620 hdev->le_scan_type == LE_SCAN_ACTIVE &&
5621 !hci_dev_test_flag(hdev, HCI_LE_SIMULTANEOUS_ROLES)) {
5626 /* Pause advertising while doing directed advertising. */
5627 hci_pause_advertising_sync(hdev);
5629 err = hci_le_directed_advertising_sync(hdev, conn);
5633 /* Disable advertising if simultaneous roles is not in use. */
5634 if (!hci_dev_test_flag(hdev, HCI_LE_SIMULTANEOUS_ROLES))
5635 hci_pause_advertising_sync(hdev);
5637 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
5639 conn->le_conn_min_interval = params->conn_min_interval;
5640 conn->le_conn_max_interval = params->conn_max_interval;
5641 conn->le_conn_latency = params->conn_latency;
5642 conn->le_supv_timeout = params->supervision_timeout;
5644 conn->le_conn_min_interval = hdev->le_conn_min_interval;
5645 conn->le_conn_max_interval = hdev->le_conn_max_interval;
5646 conn->le_conn_latency = hdev->le_conn_latency;
5647 conn->le_supv_timeout = hdev->le_supv_timeout;
5650 /* If controller is scanning, we stop it since some controllers are
5651 * not able to scan and connect at the same time. Also set the
5652 * HCI_LE_SCAN_INTERRUPTED flag so that the command complete
5653 * handler for scan disabling knows to set the correct discovery
5656 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
5657 hci_scan_disable_sync(hdev);
5658 hci_dev_set_flag(hdev, HCI_LE_SCAN_INTERRUPTED);
5661 /* Update random address, but set require_privacy to false so
5662 * that we never connect with an non-resolvable address.
5664 err = hci_update_random_address_sync(hdev, false, conn_use_rpa(conn),
5669 if (use_ext_conn(hdev)) {
5670 err = hci_le_ext_create_conn_sync(hdev, conn, own_addr_type);
5674 memset(&cp, 0, sizeof(cp));
5676 cp.scan_interval = cpu_to_le16(hdev->le_scan_int_connect);
5677 cp.scan_window = cpu_to_le16(hdev->le_scan_window_connect);
5679 bacpy(&cp.peer_addr, &conn->dst);
5680 cp.peer_addr_type = conn->dst_type;
5681 cp.own_address_type = own_addr_type;
5682 cp.conn_interval_min = cpu_to_le16(conn->le_conn_min_interval);
5683 cp.conn_interval_max = cpu_to_le16(conn->le_conn_max_interval);
5684 cp.conn_latency = cpu_to_le16(conn->le_conn_latency);
5685 cp.supervision_timeout = cpu_to_le16(conn->le_supv_timeout);
5686 cp.min_ce_len = cpu_to_le16(0x0000);
5687 cp.max_ce_len = cpu_to_le16(0x0000);
5689 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2261:
5691 * If this event is unmasked and the HCI_LE_Connection_Complete event
5692 * is unmasked, only the HCI_LE_Enhanced_Connection_Complete event is
5693 * sent when a new connection has been created.
5695 err = __hci_cmd_sync_status_sk(hdev, HCI_OP_LE_CREATE_CONN,
5697 use_enhanced_conn_complete(hdev) ?
5698 HCI_EV_LE_ENHANCED_CONN_COMPLETE :
5699 HCI_EV_LE_CONN_COMPLETE,
5700 conn->conn_timeout, NULL);
5703 /* Re-enable advertising after the connection attempt is finished. */
5704 hci_resume_advertising_sync(hdev);
5708 int hci_le_remove_cig_sync(struct hci_dev *hdev, u8 handle)
5710 struct hci_cp_le_remove_cig cp;
5712 memset(&cp, 0, sizeof(cp));
5715 return __hci_cmd_sync_status(hdev, HCI_OP_LE_REMOVE_CIG, sizeof(cp),
5716 &cp, HCI_CMD_TIMEOUT);
5719 int hci_le_big_terminate_sync(struct hci_dev *hdev, u8 handle)
5721 struct hci_cp_le_big_term_sync cp;
5723 memset(&cp, 0, sizeof(cp));
5726 return __hci_cmd_sync_status(hdev, HCI_OP_LE_BIG_TERM_SYNC,
5727 sizeof(cp), &cp, HCI_CMD_TIMEOUT);
5730 int hci_le_pa_terminate_sync(struct hci_dev *hdev, u16 handle)
5732 struct hci_cp_le_pa_term_sync cp;
5734 memset(&cp, 0, sizeof(cp));
5735 cp.handle = cpu_to_le16(handle);
5737 return __hci_cmd_sync_status(hdev, HCI_OP_LE_PA_TERM_SYNC,
5738 sizeof(cp), &cp, HCI_CMD_TIMEOUT);