/****************************************************************************** * * Copyright (C) 1999-2012 Broadcom Corporation * * 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. * ******************************************************************************/ /****************************************************************************** * * This file contains functions for BLE whitelist operation. * ******************************************************************************/ #include <string.h> #include "common/bt_trace.h" #include "device/controller.h" #include "osi/allocator.h" #include "osi/hash_map.h" #include "stack/bt_types.h" #include "stack/btu.h" #include "btm_int.h" #include "l2c_int.h" #include "stack/hcimsgs.h" //#include "bt_utils.h" #ifndef BTM_BLE_SCAN_PARAM_TOUT #define BTM_BLE_SCAN_PARAM_TOUT 50 /* 50 seconds */ #endif #if (BLE_INCLUDED == TRUE) static void btm_suspend_wl_activity(tBTM_BLE_WL_STATE wl_state); static void btm_wl_update_to_controller(void); // Unfortunately (for now?) we have to maintain a copy of the device whitelist // on the host to determine if a device is pending to be connected or not. This // controls whether the host should keep trying to scan for whitelisted // peripherals or not. // TODO: Move all of this to controller/le/background_list or similar? static const size_t background_connection_buckets = 42; static hash_map_t *background_connections = NULL; typedef struct background_connection_t { bt_bdaddr_t address; } background_connection_t; static bool bdaddr_equality_fn(const void *x, const void *y) { return bdaddr_equals((bt_bdaddr_t *)x, (bt_bdaddr_t *)y); } static void background_connections_lazy_init(void) { if (!background_connections) { background_connections = hash_map_new(background_connection_buckets, hash_function_bdaddr, NULL, osi_free_func, bdaddr_equality_fn); assert(background_connections); } } static BOOLEAN background_connection_add(bt_bdaddr_t *address) { assert(address); background_connections_lazy_init(); background_connection_t *connection = hash_map_get(background_connections, address); if (!connection) { connection = osi_calloc(sizeof(background_connection_t)); connection->address = *address; hash_map_set(background_connections, &(connection->address), connection); return TRUE; } return FALSE; } static BOOLEAN background_connection_remove(bt_bdaddr_t *address) { if (address && background_connections) { return hash_map_erase(background_connections, address); } return FALSE; } static void background_connections_clear(void) { if (background_connections) { hash_map_clear(background_connections); } } static bool background_connections_pending_cb(hash_map_entry_t *hash_entry, void *context) { bool *pending_connections = context; background_connection_t *connection = hash_entry->data; const bool connected = BTM_IsAclConnectionUp(connection->address.address, BT_TRANSPORT_LE); if (!connected) { *pending_connections = true; return false; } return true; } static bool background_connections_pending(void) { bool pending_connections = false; if (background_connections) { hash_map_foreach(background_connections, background_connections_pending_cb, &pending_connections); } return pending_connections; } /******************************************************************************* ** ** Function btm_update_scanner_filter_policy ** ** Description This function updates the filter policy of scanner *******************************************************************************/ void btm_update_scanner_filter_policy(tBTM_BLE_SFP scan_policy) { tBTM_BLE_INQ_CB *p_inq = &btm_cb.ble_ctr_cb.inq_var; UINT32 scan_interval = !p_inq->scan_interval ? BTM_BLE_GAP_DISC_SCAN_INT : p_inq->scan_interval; UINT32 scan_window = !p_inq->scan_window ? BTM_BLE_GAP_DISC_SCAN_WIN : p_inq->scan_window; BTM_TRACE_EVENT ("%s\n", __func__); p_inq->sfp = scan_policy; p_inq->scan_type = p_inq->scan_type == BTM_BLE_SCAN_MODE_NONE ? BTM_BLE_SCAN_MODE_ACTI : p_inq->scan_type; if (btm_cb.cmn_ble_vsc_cb.extended_scan_support == 0) { btsnd_hcic_ble_set_scan_params(p_inq->scan_type, (UINT16)scan_interval, (UINT16)scan_window, btm_cb.ble_ctr_cb.addr_mgnt_cb.own_addr_type, scan_policy); } else { btm_ble_send_extended_scan_params(p_inq->scan_type, scan_interval, scan_window, btm_cb.ble_ctr_cb.addr_mgnt_cb.own_addr_type, scan_policy); } } /******************************************************************************* ** ** Function btm_add_dev_to_controller ** ** Description This function load the device into controller white list *******************************************************************************/ BOOLEAN btm_add_dev_to_controller (BOOLEAN to_add, BD_ADDR bd_addr, tBLE_ADDR_TYPE wl_addr_type) { /* tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr); tBLE_ADDR_TYPE addr_type = BLE_ADDR_PUBLIC; BOOLEAN started = FALSE; BD_ADDR dummy_bda = {0}; tBT_DEVICE_TYPE dev_type; if (p_dev_rec != NULL && p_dev_rec->device_type & BT_DEVICE_TYPE_BLE) { if (to_add) { if (p_dev_rec->ble.ble_addr_type == BLE_ADDR_PUBLIC || !BTM_BLE_IS_RESOLVE_BDA(bd_addr)) { started = btsnd_hcic_ble_add_white_list (p_dev_rec->ble.ble_addr_type, bd_addr); p_dev_rec->ble.in_controller_list |= BTM_WHITE_LIST_BIT; } else if (memcmp(p_dev_rec->ble.static_addr, bd_addr, BD_ADDR_LEN) != 0 && memcmp(p_dev_rec->ble.static_addr, dummy_bda, BD_ADDR_LEN) != 0) { started = btsnd_hcic_ble_add_white_list (p_dev_rec->ble.static_addr_type, p_dev_rec->ble.static_addr); p_dev_rec->ble.in_controller_list |= BTM_WHITE_LIST_BIT; } } else { if (p_dev_rec->ble.ble_addr_type == BLE_ADDR_PUBLIC || !BTM_BLE_IS_RESOLVE_BDA(bd_addr)) { started = btsnd_hcic_ble_remove_from_white_list (p_dev_rec->ble.ble_addr_type, bd_addr); } if (memcmp(p_dev_rec->ble.static_addr, dummy_bda, BD_ADDR_LEN) != 0 && memcmp(p_dev_rec->ble.static_addr, bd_addr, BD_ADDR_LEN) != 0) { started = btsnd_hcic_ble_remove_from_white_list (p_dev_rec->ble.static_addr_type, p_dev_rec->ble.static_addr); } p_dev_rec->ble.in_controller_list &= ~BTM_WHITE_LIST_BIT; } } // if not a known device, shall we add it? else { BTM_ReadDevInfo(bd_addr, &dev_type, &addr_type); if (to_add) { started = btsnd_hcic_ble_add_white_list (addr_type, bd_addr); }else{ started = btsnd_hcic_ble_remove_from_white_list (addr_type, bd_addr); } } return started; */ /* Controller do not support resolvable address now, only support public address and static random address */ BOOLEAN started = FALSE; if(wl_addr_type > BLE_ADDR_RANDOM) { BTM_TRACE_ERROR("wl_addr_type is error\n"); return started; } if (to_add) { started = btsnd_hcic_ble_add_white_list (wl_addr_type, bd_addr); }else{ started = btsnd_hcic_ble_remove_from_white_list (wl_addr_type, bd_addr); } return started; } /******************************************************************************* ** ** Function btm_execute_wl_dev_operation ** ** Description execute the pending whitelist device operation(loading or removing) *******************************************************************************/ BOOLEAN btm_execute_wl_dev_operation(void) { tBTM_BLE_WL_OP *p_dev_op = btm_cb.ble_ctr_cb.wl_op_q; UINT8 i = 0; BOOLEAN rt = TRUE; for (i = 0; i < BTM_BLE_MAX_BG_CONN_DEV_NUM && rt; i ++, p_dev_op ++) { if (p_dev_op->in_use) { rt = btm_add_dev_to_controller(p_dev_op->to_add, p_dev_op->bd_addr, p_dev_op->addr_type); memset(p_dev_op, 0, sizeof(tBTM_BLE_WL_OP)); } else { break; } } return rt; } /******************************************************************************* ** ** Function btm_enq_wl_dev_operation ** ** Description enqueue the pending whitelist device operation(loading or removing). *******************************************************************************/ void btm_enq_wl_dev_operation(BOOLEAN to_add, BD_ADDR bd_addr, tBLE_ADDR_TYPE addr_type) { tBTM_BLE_WL_OP *p_dev_op = btm_cb.ble_ctr_cb.wl_op_q; UINT8 i = 0; for (i = 0; i < BTM_BLE_MAX_BG_CONN_DEV_NUM; i ++, p_dev_op ++) { if (p_dev_op->in_use && p_dev_op->addr_type == addr_type && !memcmp(p_dev_op->bd_addr, bd_addr, BD_ADDR_LEN)) { p_dev_op->to_add = to_add; return; } else if (!p_dev_op->in_use) { break; } } if (i != BTM_BLE_MAX_BG_CONN_DEV_NUM) { p_dev_op->in_use = TRUE; p_dev_op->to_add = to_add; p_dev_op->addr_type = addr_type; memcpy(p_dev_op->bd_addr, bd_addr, BD_ADDR_LEN); } else { BTM_TRACE_ERROR("max pending WL operation reached, discard"); } return; } /******************************************************************************* ** ** Function btm_update_dev_to_white_list ** ** Description This function adds or removes a device into/from ** the white list. ** *******************************************************************************/ BOOLEAN btm_update_dev_to_white_list(BOOLEAN to_add, BD_ADDR bd_addr, tBLE_ADDR_TYPE addr_type, tBTM_UPDATE_WHITELIST_CBACK *update_wl_cb) { if(addr_type > BLE_ADDR_RANDOM) { BTM_TRACE_ERROR("%s address type is error, unable to add device", __func__); if (update_wl_cb){ update_wl_cb(HCI_ERR_ILLEGAL_PARAMETER_FMT,to_add); } return FALSE; } BD_ADDR invalid_rand_addr_a, invalid_rand_addr_b; memset(invalid_rand_addr_a, 0xff, sizeof(BD_ADDR)); memset(invalid_rand_addr_b, 0x00, sizeof(BD_ADDR)); // look for public address information tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev(bd_addr); // p_dev_rec is created at bluetooth initialization, p_dev_rec->ble.static_addr maybe be all 0 before pairing if(p_dev_rec && memcmp(invalid_rand_addr_b, p_dev_rec->ble.static_addr, BD_ADDR_LEN) != 0) { memcpy(bd_addr, p_dev_rec->ble.static_addr, BD_ADDR_LEN); addr_type = p_dev_rec->ble.static_addr_type; } // The device to be added to white list must be public address or random address if(addr_type == BLE_ADDR_RANDOM) { /* A static address is a 48-bit randomly generated address and shall meet the following requirements: • The two most significant bits of the address shall be equal to 1 • All bits of the random part of the address shall not be equal to 1 • All bits of the random part of the address shall not be equal to 0 */ invalid_rand_addr_b[0] = invalid_rand_addr_b[0] | BT_STATIC_RAND_ADDR_MASK; if(memcmp(invalid_rand_addr_a, bd_addr, BD_ADDR_LEN) != 0 && memcmp(invalid_rand_addr_b, bd_addr, BD_ADDR_LEN) != 0){ // do nothing } else { BTC_TRACE_ERROR(" controller not support resolvable address"); if (update_wl_cb){ update_wl_cb(HCI_ERR_ILLEGAL_PARAMETER_FMT,to_add); } return FALSE; } } tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb; if (to_add && p_cb->white_list_avail_size == 0) { BTM_TRACE_ERROR("%s Whitelist full, unable to add device", __func__); if (update_wl_cb){ update_wl_cb(HCI_ERR_MEMORY_FULL,to_add); } return FALSE; } if (to_add) { /* added the bd_addr to the connection hash map queue */ if(!background_connection_add((bt_bdaddr_t *)bd_addr)) { /* if the bd_addr already exist in whitelist, just callback return TRUE */ if (update_wl_cb){ update_wl_cb(HCI_SUCCESS,to_add); } return TRUE; } } else { /* remove the bd_addr to the connection hash map queue */ if(!background_connection_remove((bt_bdaddr_t *)bd_addr)){ /* if the bd_addr don't exist in whitelist, just callback return TRUE */ if (update_wl_cb){ update_wl_cb(HCI_SUCCESS,to_add); } return TRUE; } } if (update_wl_cb){ //save add whitelist complete callback p_cb->update_wl_cb = update_wl_cb; } /* stop the auto connect */ btm_suspend_wl_activity(p_cb->wl_state); /* save the bd_addr to the btm_cb env */ btm_enq_wl_dev_operation(to_add, bd_addr, addr_type); /* save the ba_addr to the controller white list */ btm_wl_update_to_controller(); return TRUE; } /******************************************************************************* ** ** Function btm_ble_clear_white_list ** ** Description This function clears the white list. ** *******************************************************************************/ void btm_ble_clear_white_list (tBTM_UPDATE_WHITELIST_CBACK *update_wl_cb) { tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb; BTM_TRACE_EVENT ("btm_ble_clear_white_list"); btsnd_hcic_ble_clear_white_list(); background_connections_clear(); if (update_wl_cb) { p_cb->update_wl_cb = update_wl_cb; } } /******************************************************************************* ** ** Function btm_ble_clear_white_list_complete ** ** Description Indicates white list cleared. ** *******************************************************************************/ void btm_ble_clear_white_list_complete(UINT8 *p_data, UINT16 evt_len) { tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb; UINT8 status; UNUSED(evt_len); BTM_TRACE_EVENT ("btm_ble_clear_white_list_complete"); STREAM_TO_UINT8 (status, p_data); if (status == HCI_SUCCESS) { p_cb->white_list_avail_size = controller_get_interface()->get_ble_white_list_size(); } else { BTM_TRACE_ERROR ("%s failed, status 0x%x\n", __func__, status); } if (p_cb->update_wl_cb) { (*p_cb->update_wl_cb)(status, BTM_WHITELIST_CLEAR); } } /******************************************************************************* ** ** Function btm_ble_white_list_init ** ** Description Initialize white list size ** *******************************************************************************/ void btm_ble_white_list_init(UINT8 white_list_size) { BTM_TRACE_DEBUG("%s white_list_size = %d", __func__, white_list_size); btm_cb.ble_ctr_cb.white_list_avail_size = white_list_size; } /******************************************************************************* ** ** Function btm_ble_add_2_white_list_complete ** ** Description White list element added ** *******************************************************************************/ void btm_ble_add_2_white_list_complete(UINT8 status) { BTM_TRACE_EVENT("%s status=%d", __func__, status); tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb; if (status == HCI_SUCCESS) { --btm_cb.ble_ctr_cb.white_list_avail_size; } // add whitelist complete callback if (p_cb->update_wl_cb) { (*p_cb->update_wl_cb)(status, BTM_WHITELIST_ADD); } } /******************************************************************************* ** ** Function btm_ble_remove_from_white_list_complete ** ** Description White list element removal complete ** *******************************************************************************/ void btm_ble_remove_from_white_list_complete(UINT8 *p, UINT16 evt_len) { tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb; UNUSED(evt_len); BTM_TRACE_EVENT ("%s status=%d", __func__, *p); if (*p == HCI_SUCCESS) { ++btm_cb.ble_ctr_cb.white_list_avail_size; } if (p_cb->update_wl_cb) { (*p_cb->update_wl_cb)(*p, BTM_WHITELIST_REMOVE); } } /******************************************************************************* ** ** Function btm_ble_start_auto_conn ** ** Description This function is to start/stop auto connection procedure. ** ** Parameters start: TRUE to start; FALSE to stop. ** ** Returns void ** *******************************************************************************/ BOOLEAN btm_ble_start_auto_conn(BOOLEAN start) { tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb; BD_ADDR dummy_bda = {0}; BOOLEAN exec = TRUE; UINT16 scan_int; UINT16 scan_win; UINT8 own_addr_type = p_cb->addr_mgnt_cb.own_addr_type; UINT8 peer_addr_type = BLE_ADDR_PUBLIC; if (start) { if (p_cb->conn_state == BLE_CONN_IDLE && background_connections_pending() && btm_ble_topology_check(BTM_BLE_STATE_INIT)) { p_cb->wl_state |= BTM_BLE_WL_INIT; btm_execute_wl_dev_operation(); #if BLE_PRIVACY_SPT == TRUE btm_ble_enable_resolving_list_for_platform(BTM_BLE_RL_INIT); #endif scan_int = (p_cb->scan_int == BTM_BLE_SCAN_PARAM_UNDEF) ? BTM_BLE_SCAN_SLOW_INT_1 : p_cb->scan_int; scan_win = (p_cb->scan_win == BTM_BLE_SCAN_PARAM_UNDEF) ? BTM_BLE_SCAN_SLOW_WIN_1 : p_cb->scan_win; #if BLE_PRIVACY_SPT == TRUE if (btm_cb.ble_ctr_cb.rl_state != BTM_BLE_RL_IDLE && controller_get_interface()->supports_ble_privacy()) { own_addr_type |= BLE_ADDR_TYPE_ID_BIT; peer_addr_type |= BLE_ADDR_TYPE_ID_BIT; } #endif if (!btsnd_hcic_ble_create_ll_conn (scan_int, /* UINT16 scan_int */ scan_win, /* UINT16 scan_win */ 0x01, /* UINT8 white_list */ peer_addr_type, /* UINT8 addr_type_peer */ dummy_bda, /* BD_ADDR bda_peer */ own_addr_type, /* UINT8 addr_type_own */ BTM_BLE_CONN_INT_MIN_DEF, /* UINT16 conn_int_min */ BTM_BLE_CONN_INT_MAX_DEF, /* UINT16 conn_int_max */ BTM_BLE_CONN_SLAVE_LATENCY_DEF, /* UINT16 conn_latency */ BTM_BLE_CONN_TIMEOUT_DEF, /* UINT16 conn_timeout */ 0, /* UINT16 min_len */ 0)) { /* UINT16 max_len */ /* start auto connection failed */ exec = FALSE; p_cb->wl_state &= ~BTM_BLE_WL_INIT; } else { btm_ble_set_conn_st (BLE_BG_CONN); } } else { exec = FALSE; } } else { if (p_cb->conn_state == BLE_BG_CONN) { btsnd_hcic_ble_create_conn_cancel(); btm_ble_set_conn_st (BLE_CONN_CANCEL); p_cb->wl_state &= ~BTM_BLE_WL_INIT; } else { BTM_TRACE_DEBUG("conn_st = %d, not in auto conn state, cannot stop", p_cb->conn_state); exec = FALSE; } } return exec; } /******************************************************************************* ** ** Function btm_ble_start_select_conn ** ** Description This function is to start/stop selective connection procedure. ** ** Parameters start: TRUE to start; FALSE to stop. ** p_select_cback: callback function to return application ** selection. ** ** Returns BOOLEAN: selective connection procedure is started. ** *******************************************************************************/ BOOLEAN btm_ble_start_select_conn(BOOLEAN start, tBTM_BLE_SEL_CBACK *p_select_cback) { tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb; UINT32 scan_int = p_cb->scan_int == BTM_BLE_SCAN_PARAM_UNDEF ? BTM_BLE_SCAN_FAST_INT : p_cb->scan_int; UINT32 scan_win = p_cb->scan_win == BTM_BLE_SCAN_PARAM_UNDEF ? BTM_BLE_SCAN_FAST_WIN : p_cb->scan_win; BTM_TRACE_EVENT ("%s", __func__); if (start) { if (!BTM_BLE_IS_SCAN_ACTIVE(p_cb->scan_activity)) { if (p_select_cback != NULL) { btm_cb.ble_ctr_cb.p_select_cback = p_select_cback; } btm_execute_wl_dev_operation(); btm_update_scanner_filter_policy(SP_ADV_WL); btm_cb.ble_ctr_cb.inq_var.scan_type = BTM_BLE_SCAN_MODE_PASS; /* Process advertising packets only from devices in the white list */ if (btm_cb.cmn_ble_vsc_cb.extended_scan_support == 0) { /* use passive scan by default */ if (!btsnd_hcic_ble_set_scan_params(BTM_BLE_SCAN_MODE_PASS, scan_int, scan_win, p_cb->addr_mgnt_cb.own_addr_type, SP_ADV_WL)) { return FALSE; } } else { if (!btm_ble_send_extended_scan_params(BTM_BLE_SCAN_MODE_PASS, scan_int, scan_win, p_cb->addr_mgnt_cb.own_addr_type, SP_ADV_WL)) { return FALSE; } } if (!btm_ble_topology_check(BTM_BLE_STATE_PASSIVE_SCAN)) { BTM_TRACE_ERROR("peripheral device cannot initiate passive scan for a selective connection"); return FALSE; } else if (background_connections_pending()) { #if BLE_PRIVACY_SPT == TRUE btm_ble_enable_resolving_list_for_platform(BTM_BLE_RL_SCAN); #endif if (!btsnd_hcic_ble_set_scan_enable(TRUE, TRUE)) { /* duplicate filtering enabled */ return FALSE; } /* mark up inquiry status flag */ p_cb->scan_activity |= BTM_LE_SELECT_CONN_ACTIVE; p_cb->wl_state |= BTM_BLE_WL_SCAN; } } else { BTM_TRACE_ERROR("scan active, can not start selective connection procedure"); return FALSE; } } else { /* disable selective connection mode */ p_cb->scan_activity &= ~BTM_LE_SELECT_CONN_ACTIVE; p_cb->p_select_cback = NULL; p_cb->wl_state &= ~BTM_BLE_WL_SCAN; /* stop scanning */ if (!BTM_BLE_IS_SCAN_ACTIVE(p_cb->scan_activity)) { btm_ble_stop_scan(); /* duplicate filtering enabled */ } } return TRUE; } /******************************************************************************* ** ** Function btm_ble_initiate_select_conn ** ** Description This function is to start/stop selective connection procedure. ** ** Parameters start: TRUE to start; FALSE to stop. ** p_select_cback: callback function to return application ** selection. ** ** Returns BOOLEAN: selective connection procedure is started. ** *******************************************************************************/ void btm_ble_initiate_select_conn(BD_ADDR bda) { BTM_TRACE_EVENT ("btm_ble_initiate_select_conn"); /* use direct connection procedure to initiate connection */ if (!L2CA_ConnectFixedChnl(L2CAP_ATT_CID, bda, BLE_ADDR_UNKNOWN_TYPE, FALSE)) { BTM_TRACE_ERROR("btm_ble_initiate_select_conn failed"); } } /******************************************************************************* ** ** Function btm_ble_suspend_bg_conn ** ** Description This function is to suspend an active background connection ** procedure. ** ** Parameters none. ** ** Returns none. ** *******************************************************************************/ BOOLEAN btm_ble_suspend_bg_conn(void) { BTM_TRACE_EVENT ("%s\n", __func__); if (btm_cb.ble_ctr_cb.bg_conn_type == BTM_BLE_CONN_AUTO) { return btm_ble_start_auto_conn(FALSE); } else if (btm_cb.ble_ctr_cb.bg_conn_type == BTM_BLE_CONN_SELECTIVE) { return btm_ble_start_select_conn(FALSE, NULL); } return FALSE; } /******************************************************************************* ** ** Function btm_suspend_wl_activity ** ** Description This function is to suspend white list related activity ** ** Returns none. ** *******************************************************************************/ static void btm_suspend_wl_activity(tBTM_BLE_WL_STATE wl_state) { if (wl_state & BTM_BLE_WL_INIT) { btm_ble_start_auto_conn(FALSE); } if (wl_state & BTM_BLE_WL_SCAN) { btm_ble_start_select_conn(FALSE, NULL); } if (wl_state & BTM_BLE_WL_ADV) { btm_ble_stop_adv(); } } /******************************************************************************* ** ** Function btm_resume_wl_activity ** ** Description This function is to resume white list related activity ** ** Returns none. ** *******************************************************************************/ void btm_resume_wl_activity(tBTM_BLE_WL_STATE wl_state) { btm_ble_resume_bg_conn(); if (wl_state & BTM_BLE_WL_ADV) { btm_ble_start_adv(); } } /******************************************************************************* ** ** Function btm_wl_update_to_controller ** ** Description This function is to update white list to controller ** ** Returns none. ** *******************************************************************************/ static void btm_wl_update_to_controller(void) { /* whitelist will be added in the btm_ble_resume_bg_conn(), we do not support background connection now, so we nedd to use btm_execute_wl_dev_operation to add whitelist directly ,if we support background connection in the future, please delete btm_execute_wl_dev_operation(). */ btm_execute_wl_dev_operation(); } /******************************************************************************* ** ** Function btm_ble_resume_bg_conn ** ** Description This function is to resume a background auto connection ** procedure. ** ** Parameters none. ** ** Returns none. ** *******************************************************************************/ BOOLEAN btm_ble_resume_bg_conn(void) { tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb; BOOLEAN ret = FALSE; if (p_cb->bg_conn_type != BTM_BLE_CONN_NONE) { if (p_cb->bg_conn_type == BTM_BLE_CONN_AUTO) { ret = btm_ble_start_auto_conn(TRUE); } if (p_cb->bg_conn_type == BTM_BLE_CONN_SELECTIVE) { ret = btm_ble_start_select_conn(TRUE, btm_cb.ble_ctr_cb.p_select_cback); } } return ret; } /******************************************************************************* ** ** Function btm_ble_get_conn_st ** ** Description This function get BLE connection state ** ** Returns connection state ** *******************************************************************************/ tBTM_BLE_CONN_ST btm_ble_get_conn_st(void) { return btm_cb.ble_ctr_cb.conn_state; } /******************************************************************************* ** ** Function btm_ble_set_conn_st ** ** Description This function set BLE connection state ** ** Returns None. ** *******************************************************************************/ void btm_ble_set_conn_st(tBTM_BLE_CONN_ST new_st) { btm_cb.ble_ctr_cb.conn_state = new_st; if (new_st == BLE_BG_CONN || new_st == BLE_DIR_CONN) { btm_ble_set_topology_mask(BTM_BLE_STATE_INIT_BIT); } else { btm_ble_clear_topology_mask(BTM_BLE_STATE_INIT_BIT); } } /******************************************************************************* ** ** Function btm_ble_enqueue_direct_conn_req ** ** Description This function enqueue the direct connection request ** ** Returns None. ** *******************************************************************************/ void btm_ble_enqueue_direct_conn_req(void *p_param) { tBTM_BLE_CONN_REQ *p = (tBTM_BLE_CONN_REQ *)osi_malloc(sizeof(tBTM_BLE_CONN_REQ)); p->p_param = p_param; fixed_queue_enqueue(btm_cb.ble_ctr_cb.conn_pending_q, p, FIXED_QUEUE_MAX_TIMEOUT); } /******************************************************************************* ** ** Function btm_send_pending_direct_conn ** ** Description This function send the pending direct connection request in queue ** ** Returns TRUE if started, FALSE otherwise ** *******************************************************************************/ BOOLEAN btm_send_pending_direct_conn(void) { tBTM_BLE_CONN_REQ *p_req; BOOLEAN rt = FALSE; p_req = (tBTM_BLE_CONN_REQ*)fixed_queue_dequeue(btm_cb.ble_ctr_cb.conn_pending_q, 0); if (p_req != NULL) { rt = l2cble_init_direct_conn((tL2C_LCB *)(p_req->p_param)); osi_free((void *)p_req); } return rt; } #endif