/* * Copyright 2020 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include #include "osi/include/log.h" #include "stack/btm/btm_ble_int.h" #include "stack/btm/btm_dev.h" #include "stack/btm/btm_sec.h" #include "stack/gatt/connection_manager.h" #include "stack/include/acl_api.h" #include "stack/include/bt_types.h" #include "stack/include/hcidefs.h" #include "stack/include/l2cap_hci_link_interface.h" extern tBTM_CB btm_cb; void btm_ble_advertiser_notify_terminated_legacy(uint8_t status, uint16_t connection_handle); void btm_ble_increment_link_topology_mask(uint8_t link_role); bool maybe_resolve_address(RawAddress* bda, tBLE_ADDR_TYPE* bda_type); static bool acl_ble_common_connection(const tBLE_BD_ADDR& address_with_type, uint16_t handle, tHCI_ROLE role, bool is_in_security_db, uint16_t conn_interval, uint16_t conn_latency, uint16_t conn_timeout) { if (role == HCI_ROLE_CENTRAL) { btm_cb.ble_ctr_cb.set_connection_state_idle(); btm_ble_clear_topology_mask(BTM_BLE_STATE_INIT_BIT); } // Inform any applications that a connection has completed. connection_manager::on_connection_complete(address_with_type.bda); // Allocate or update the security device record for this device btm_ble_connected(address_with_type.bda, handle, HCI_ENCRYPT_MODE_DISABLED, role, address_with_type.type, is_in_security_db); // Update the link topology information for our device btm_ble_increment_link_topology_mask(role); // Inform l2cap of a potential connection. if (!l2cble_conn_comp(handle, role, address_with_type.bda, address_with_type.type, conn_interval, conn_latency, conn_timeout)) { btm_sec_disconnect(handle, HCI_ERR_NO_CONNECTION); LOG_WARN("Unable to complete l2cap connection"); return false; } btm_ble_disable_resolving_list(BTM_BLE_RL_INIT, true); /* Tell BTM Acl management about the link */ btm_acl_created(address_with_type.bda, handle, role, BT_TRANSPORT_LE); return true; } void acl_ble_connection_complete(const tBLE_BD_ADDR& address_with_type, uint16_t handle, tHCI_ROLE role, bool match, uint16_t conn_interval, uint16_t conn_latency, uint16_t conn_timeout) { if (!acl_ble_common_connection(address_with_type, handle, role, match, conn_interval, conn_latency, conn_timeout)) { LOG_WARN("Unable to create non enhanced ble acl connection"); return; } btm_ble_update_mode_operation(role, &address_with_type.bda, HCI_SUCCESS); if (role == HCI_ROLE_PERIPHERAL) btm_ble_advertiser_notify_terminated_legacy(HCI_SUCCESS, handle); } void acl_ble_enhanced_connection_complete( const tBLE_BD_ADDR& address_with_type, uint16_t handle, tHCI_ROLE role, bool match, uint16_t conn_interval, uint16_t conn_latency, uint16_t conn_timeout, const RawAddress& local_rpa, const RawAddress& peer_rpa, uint8_t peer_addr_type) { if (!acl_ble_common_connection(address_with_type, handle, role, match, conn_interval, conn_latency, conn_timeout)) { LOG_WARN("Unable to create enhanced ble acl connection"); return; } btm_ble_refresh_local_resolvable_private_addr(address_with_type.bda, local_rpa); if (peer_addr_type & BLE_ADDR_TYPE_ID_BIT) btm_ble_refresh_peer_resolvable_private_addr( address_with_type.bda, peer_rpa, tBTM_SEC_BLE::BTM_BLE_ADDR_RRA); btm_ble_update_mode_operation(role, &address_with_type.bda, HCI_SUCCESS); if (role == HCI_ROLE_PERIPHERAL) btm_ble_advertiser_notify_terminated_legacy(HCI_SUCCESS, handle); } static bool maybe_resolve_received_address( const tBLE_BD_ADDR& address_with_type, tBLE_BD_ADDR* resolved_address_with_type) { ASSERT(resolved_address_with_type != nullptr); *resolved_address_with_type = address_with_type; return maybe_resolve_address(&resolved_address_with_type->bda, &resolved_address_with_type->type); } void acl_ble_enhanced_connection_complete_from_shim( const tBLE_BD_ADDR& address_with_type, uint16_t handle, tHCI_ROLE role, uint16_t conn_interval, uint16_t conn_latency, uint16_t conn_timeout, const RawAddress& local_rpa, const RawAddress& peer_rpa, uint8_t peer_addr_type) { tBLE_BD_ADDR resolved_address_with_type; const bool is_in_security_db = maybe_resolve_received_address( address_with_type, &resolved_address_with_type); acl_ble_enhanced_connection_complete(resolved_address_with_type, handle, role, is_in_security_db, conn_interval, conn_latency, conn_timeout, local_rpa, peer_rpa, peer_addr_type); // The legacy stack continues the LE connection after the read remote version // complete has been received. l2cble_notify_le_connection(address_with_type.bda); l2cble_use_preferred_conn_params(address_with_type.bda); } void acl_ble_connection_fail(const tBLE_BD_ADDR& address_with_type, uint16_t handle, bool enhanced, tHCI_STATUS status) { if (status != HCI_ERR_ADVERTISING_TIMEOUT) { btm_cb.ble_ctr_cb.set_connection_state_idle(); btm_ble_clear_topology_mask(BTM_BLE_STATE_INIT_BIT); btm_ble_disable_resolving_list(BTM_BLE_RL_INIT, true); } else { btm_cb.ble_ctr_cb.inq_var.adv_mode = BTM_BLE_ADV_DISABLE; btm_ble_disable_resolving_list(BTM_BLE_RL_ADV, true); } btm_ble_update_mode_operation(HCI_ROLE_UNKNOWN, &address_with_type.bda, status); } void gatt_notify_conn_update(const RawAddress& remote, uint16_t interval, uint16_t latency, uint16_t timeout, tHCI_STATUS status); void acl_ble_update_event_received(tHCI_STATUS status, uint16_t handle, uint16_t interval, uint16_t latency, uint16_t timeout) { l2cble_process_conn_update_evt(handle, status, interval, latency, timeout); tBTM_SEC_DEV_REC* p_dev_rec = btm_find_dev_by_handle(handle); if (!p_dev_rec) return; gatt_notify_conn_update(p_dev_rec->ble.pseudo_addr, interval, latency, timeout, status); }