diff options
Diffstat (limited to 'net/bluetooth/hci_sync.c')
| -rw-r--r-- | net/bluetooth/hci_sync.c | 249 |
1 files changed, 248 insertions, 1 deletions
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c index ac0f2cc0e44c..148ce629a59f 100644 --- a/net/bluetooth/hci_sync.c +++ b/net/bluetooth/hci_sync.c @@ -977,6 +977,187 @@ int hci_start_ext_adv_sync(struct hci_dev *hdev, u8 instance) return hci_enable_ext_advertising_sync(hdev, instance); } +static int hci_disable_per_advertising_sync(struct hci_dev *hdev, u8 instance) +{ + struct hci_cp_le_set_per_adv_enable cp; + + /* If periodic advertising already disabled there is nothing to do. */ + if (!hci_dev_test_flag(hdev, HCI_LE_PER_ADV)) + return 0; + + memset(&cp, 0, sizeof(cp)); + + cp.enable = 0x00; + cp.handle = instance; + + return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE, + sizeof(cp), &cp, HCI_CMD_TIMEOUT); +} + +static int hci_set_per_adv_params_sync(struct hci_dev *hdev, u8 instance, + u16 min_interval, u16 max_interval) +{ + struct hci_cp_le_set_per_adv_params cp; + + memset(&cp, 0, sizeof(cp)); + + if (!min_interval) + min_interval = DISCOV_LE_PER_ADV_INT_MIN; + + if (!max_interval) + max_interval = DISCOV_LE_PER_ADV_INT_MAX; + + cp.handle = instance; + cp.min_interval = cpu_to_le16(min_interval); + cp.max_interval = cpu_to_le16(max_interval); + cp.periodic_properties = 0x0000; + + return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS, + sizeof(cp), &cp, HCI_CMD_TIMEOUT); +} + +static int hci_set_per_adv_data_sync(struct hci_dev *hdev, u8 instance) +{ + struct { + struct hci_cp_le_set_per_adv_data cp; + u8 data[HCI_MAX_PER_AD_LENGTH]; + } pdu; + u8 len; + + memset(&pdu, 0, sizeof(pdu)); + + if (instance) { + struct adv_info *adv = hci_find_adv_instance(hdev, instance); + + if (!adv || !adv->periodic) + return 0; + } + + len = eir_create_per_adv_data(hdev, instance, pdu.data); + + pdu.cp.length = len; + pdu.cp.handle = instance; + pdu.cp.operation = LE_SET_ADV_DATA_OP_COMPLETE; + + return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_DATA, + sizeof(pdu.cp) + len, &pdu, + HCI_CMD_TIMEOUT); +} + +static int hci_enable_per_advertising_sync(struct hci_dev *hdev, u8 instance) +{ + struct hci_cp_le_set_per_adv_enable cp; + + /* If periodic advertising already enabled there is nothing to do. */ + if (hci_dev_test_flag(hdev, HCI_LE_PER_ADV)) + return 0; + + memset(&cp, 0, sizeof(cp)); + + cp.enable = 0x01; + cp.handle = instance; + + return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE, + sizeof(cp), &cp, HCI_CMD_TIMEOUT); +} + +/* Checks if periodic advertising data contains a Basic Announcement and if it + * does generates a Broadcast ID and add Broadcast Announcement. + */ +static int hci_adv_bcast_annoucement(struct hci_dev *hdev, struct adv_info *adv) +{ + u8 bid[3]; + u8 ad[4 + 3]; + + /* Skip if NULL adv as instance 0x00 is used for general purpose + * advertising so it cannot used for the likes of Broadcast Announcement + * as it can be overwritten at any point. + */ + if (!adv) + return 0; + + /* Check if PA data doesn't contains a Basic Audio Announcement then + * there is nothing to do. + */ + if (!eir_get_service_data(adv->per_adv_data, adv->per_adv_data_len, + 0x1851, NULL)) + return 0; + + /* Check if advertising data already has a Broadcast Announcement since + * the process may want to control the Broadcast ID directly and in that + * case the kernel shall no interfere. + */ + if (eir_get_service_data(adv->adv_data, adv->adv_data_len, 0x1852, + NULL)) + return 0; + + /* Generate Broadcast ID */ + get_random_bytes(bid, sizeof(bid)); + eir_append_service_data(ad, 0, 0x1852, bid, sizeof(bid)); + hci_set_adv_instance_data(hdev, adv->instance, sizeof(ad), ad, 0, NULL); + + return hci_update_adv_data_sync(hdev, adv->instance); +} + +int hci_start_per_adv_sync(struct hci_dev *hdev, u8 instance, u8 data_len, + u8 *data, u32 flags, u16 min_interval, + u16 max_interval, u16 sync_interval) +{ + struct adv_info *adv = NULL; + int err; + bool added = false; + + hci_disable_per_advertising_sync(hdev, instance); + + if (instance) { + adv = hci_find_adv_instance(hdev, instance); + /* Create an instance if that could not be found */ + if (!adv) { + adv = hci_add_per_instance(hdev, instance, flags, + data_len, data, + sync_interval, + sync_interval); + if (IS_ERR(adv)) + return PTR_ERR(adv); + added = true; + } + } + + /* Only start advertising if instance 0 or if a dedicated instance has + * been added. + */ + if (!adv || added) { + err = hci_start_ext_adv_sync(hdev, instance); + if (err < 0) + goto fail; + + err = hci_adv_bcast_annoucement(hdev, adv); + if (err < 0) + goto fail; + } + + err = hci_set_per_adv_params_sync(hdev, instance, min_interval, + max_interval); + if (err < 0) + goto fail; + + err = hci_set_per_adv_data_sync(hdev, instance); + if (err < 0) + goto fail; + + err = hci_enable_per_advertising_sync(hdev, instance); + if (err < 0) + goto fail; + + return 0; + +fail: + if (added) + hci_remove_adv_instance(hdev, instance); + + return err; +} + static int hci_start_adv_sync(struct hci_dev *hdev, u8 instance) { int err; @@ -1116,6 +1297,42 @@ int hci_remove_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance, HCI_CMD_TIMEOUT, sk); } +static int remove_ext_adv_sync(struct hci_dev *hdev, void *data) +{ + struct adv_info *adv = data; + u8 instance = 0; + + if (adv) + instance = adv->instance; + + return hci_remove_ext_adv_instance_sync(hdev, instance, NULL); +} + +int hci_remove_ext_adv_instance(struct hci_dev *hdev, u8 instance) +{ + struct adv_info *adv = NULL; + + if (instance) { + adv = hci_find_adv_instance(hdev, instance); + if (!adv) + return -EINVAL; + } + + return hci_cmd_sync_queue(hdev, remove_ext_adv_sync, adv, NULL); +} + +int hci_le_terminate_big_sync(struct hci_dev *hdev, u8 handle, u8 reason) +{ + struct hci_cp_le_term_big cp; + + memset(&cp, 0, sizeof(cp)); + cp.handle = handle; + cp.reason = reason; + + return __hci_cmd_sync_status(hdev, HCI_OP_LE_TERM_BIG, + sizeof(cp), &cp, HCI_CMD_TIMEOUT); +} + static void cancel_adv_timeout(struct hci_dev *hdev) { if (hdev->adv_instance_timeout) { @@ -2201,7 +2418,8 @@ int hci_update_passive_scan_sync(struct hci_dev *hdev) if (list_empty(&hdev->pend_le_conns) && list_empty(&hdev->pend_le_reports) && - !hci_is_adv_monitoring(hdev)) { + !hci_is_adv_monitoring(hdev) && + !hci_dev_test_flag(hdev, HCI_PA_SYNC)) { /* If there is no pending LE connections or devices * to be scanned for or no ADV monitors, we should stop the * background scanning. @@ -3405,6 +3623,13 @@ static int hci_le_set_event_mask_sync(struct hci_dev *hdev) events[3] |= 0x02; /* LE CIS Request */ } + if (bis_capable(hdev)) { + events[3] |= 0x04; /* LE Create BIG Complete */ + events[3] |= 0x08; /* LE Terminate BIG Complete */ + events[3] |= 0x10; /* LE BIG Sync Established */ + events[3] |= 0x20; /* LE BIG Sync Loss */ + } + return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EVENT_MASK, sizeof(events), events, HCI_CMD_TIMEOUT); } @@ -5484,3 +5709,25 @@ int hci_le_remove_cig_sync(struct hci_dev *hdev, u8 handle) return __hci_cmd_sync_status(hdev, HCI_OP_LE_REMOVE_CIG, sizeof(cp), &cp, HCI_CMD_TIMEOUT); } + +int hci_le_big_terminate_sync(struct hci_dev *hdev, u8 handle) +{ + struct hci_cp_le_big_term_sync cp; + + memset(&cp, 0, sizeof(cp)); + cp.handle = handle; + + return __hci_cmd_sync_status(hdev, HCI_OP_LE_BIG_TERM_SYNC, + sizeof(cp), &cp, HCI_CMD_TIMEOUT); +} + +int hci_le_pa_terminate_sync(struct hci_dev *hdev, u16 handle) +{ + struct hci_cp_le_pa_term_sync cp; + + memset(&cp, 0, sizeof(cp)); + cp.handle = cpu_to_le16(handle); + + return __hci_cmd_sync_status(hdev, HCI_OP_LE_PA_TERM_SYNC, + sizeof(cp), &cp, HCI_CMD_TIMEOUT); +} |