/****************************************************************************** * * Copyright 2004-2012 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 the pan action functions for the state machine. * ******************************************************************************/ #include "bt_target.h" #if (PAN_INCLUDED == TRUE) #include #include #include "bt_common.h" #include "bta_api.h" #include "bta_pan_api.h" #include "bta_pan_co.h" #include "bta_pan_int.h" #include "bta_sys.h" #include "osi/include/osi.h" #include "pan_api.h" #include "utl.h" /* RX and TX data flow mask */ #define BTA_PAN_RX_MASK 0x0F #define BTA_PAN_TX_MASK 0xF0 /******************************************************************************* * * Function bta_pan_pm_conn_busy * * Description set pan pm connection busy state * * Params p_scb: state machine control block of pan connection * * Returns void * ******************************************************************************/ static void bta_pan_pm_conn_busy(tBTA_PAN_SCB* p_scb) { if ((p_scb != NULL) && (p_scb->state != BTA_PAN_IDLE_ST)) bta_sys_busy(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr); } /******************************************************************************* * * Function bta_pan_pm_conn_idle * * Description set pan pm connection idle state * * Params p_scb: state machine control block of pan connection * * Returns void * ******************************************************************************/ static void bta_pan_pm_conn_idle(tBTA_PAN_SCB* p_scb) { if ((p_scb != NULL) && (p_scb->state != BTA_PAN_IDLE_ST)) bta_sys_idle(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr); } /******************************************************************************* * * Function bta_pan_conn_state_cback * * Description Connection state callback from Pan profile * * * Returns void * ******************************************************************************/ static void bta_pan_conn_state_cback(uint16_t handle, const RawAddress& bd_addr, tPAN_RESULT state, bool is_role_change, uint8_t src_role, uint8_t dst_role) { tBTA_PAN_SCB* p_scb; tBTA_PAN_CONN* p_buf = (tBTA_PAN_CONN*)osi_malloc(sizeof(tBTA_PAN_CONN)); if ((state == PAN_SUCCESS) && !is_role_change) { p_buf->hdr.event = BTA_PAN_CONN_OPEN_EVT; p_scb = bta_pan_scb_by_handle(handle); if (p_scb == NULL) { /* allocate an scb */ p_scb = bta_pan_scb_alloc(); } /* we have exceeded maximum number of connections */ if (!p_scb) { PAN_Disconnect(handle); return; } p_scb->handle = handle; p_scb->local_role = src_role; p_scb->peer_role = dst_role; p_scb->pan_flow_enable = true; p_scb->bd_addr = bd_addr; p_scb->data_queue = fixed_queue_new(SIZE_MAX); if (src_role == PAN_ROLE_CLIENT) p_scb->app_id = bta_pan_cb.app_id[0]; else if (src_role == PAN_ROLE_GN_SERVER) p_scb->app_id = bta_pan_cb.app_id[1]; else if (src_role == PAN_ROLE_NAP_SERVER) p_scb->app_id = bta_pan_cb.app_id[2]; } else if ((state != PAN_SUCCESS) && !is_role_change) { p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT; } else { return; } p_buf->result = state; p_buf->hdr.layer_specific = handle; bta_sys_sendmsg(p_buf); } /******************************************************************************* * * Function bta_pan_data_flow_cb * * Description Data flow status callback from PAN * * * Returns void * ******************************************************************************/ static void bta_pan_data_flow_cb(uint16_t handle, tPAN_RESULT result) { tBTA_PAN_SCB* p_scb; p_scb = bta_pan_scb_by_handle(handle); if (p_scb == NULL) return; if (result == PAN_TX_FLOW_ON) { BT_HDR* p_buf = (BT_HDR*)osi_malloc(sizeof(BT_HDR)); p_buf->layer_specific = handle; p_buf->event = BTA_PAN_BNEP_FLOW_ENABLE_EVT; bta_sys_sendmsg(p_buf); bta_pan_co_rx_flow(handle, p_scb->app_id, true); } else if (result == PAN_TX_FLOW_OFF) { p_scb->pan_flow_enable = false; bta_pan_co_rx_flow(handle, p_scb->app_id, false); } } /******************************************************************************* * * Function bta_pan_data_buf_ind_cback * * Description data indication callback from pan profile * * * Returns void * ******************************************************************************/ static void bta_pan_data_buf_ind_cback(uint16_t handle, const RawAddress& src, const RawAddress& dst, uint16_t protocol, BT_HDR* p_buf, bool ext, bool forward) { tBTA_PAN_SCB* p_scb = bta_pan_scb_by_handle(handle); if (p_scb == NULL) { return; } if (sizeof(BT_HDR) + sizeof(tBTA_PAN_DATA_PARAMS) + p_buf->len > PAN_BUF_SIZE) { android_errorWriteLog(0x534e4554, "63146237"); APPL_TRACE_ERROR("%s: received buffer length too large: %d", __func__, p_buf->len); return; } BT_HDR* p_new_buf = (BT_HDR*)osi_malloc(PAN_BUF_SIZE); memcpy((uint8_t*)(p_new_buf + 1) + sizeof(tBTA_PAN_DATA_PARAMS), (uint8_t*)(p_buf + 1) + p_buf->offset, p_buf->len); p_new_buf->len = p_buf->len; p_new_buf->offset = sizeof(tBTA_PAN_DATA_PARAMS); /* copy params into the space before the data */ ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->src = src; ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->dst = dst; ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->protocol = protocol; ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->ext = ext; ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->forward = forward; fixed_queue_enqueue(p_scb->data_queue, p_new_buf); BT_HDR* p_event = (BT_HDR*)osi_malloc(sizeof(BT_HDR)); p_event->layer_specific = handle; p_event->event = BTA_PAN_RX_FROM_BNEP_READY_EVT; bta_sys_sendmsg(p_event); } /******************************************************************************* * * Function bta_pan_pfilt_ind_cback * * Description * * * Returns void * ******************************************************************************/ static void bta_pan_pfilt_ind_cback(uint16_t handle, bool indication, tBNEP_RESULT result, uint16_t num_filters, uint8_t* p_filters) { bta_pan_co_pfilt_ind( handle, indication, (tBTA_PAN_STATUS)((result == BNEP_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL), num_filters, p_filters); } /******************************************************************************* * * Function bta_pan_mfilt_ind_cback * * Description * * * Returns void * ******************************************************************************/ static void bta_pan_mfilt_ind_cback(uint16_t handle, bool indication, tBNEP_RESULT result, uint16_t num_mfilters, uint8_t* p_mfilters) { bta_pan_co_mfilt_ind( handle, indication, (tBTA_PAN_STATUS)((result == BNEP_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL), num_mfilters, p_mfilters); } /******************************************************************************* * * Function bta_pan_has_multiple_connections * * Description Check whether there are multiple GN/NAP connections to * different devices * * * Returns bool * ******************************************************************************/ static bool bta_pan_has_multiple_connections(uint8_t app_id) { tBTA_PAN_SCB* p_scb = NULL; bool found = false; RawAddress bd_addr; for (uint8_t index = 0; index < BTA_PAN_NUM_CONN; index++) { p_scb = &bta_pan_cb.scb[index]; if (p_scb->in_use && app_id == p_scb->app_id) { /* save temp bd_addr */ bd_addr = p_scb->bd_addr; found = true; break; } } /* If cannot find a match then there is no connection at all */ if (!found) return false; /* Find whether there is another connection with different device other than PANU. Could be same service or different service */ for (uint8_t index = 0; index < BTA_PAN_NUM_CONN; index++) { p_scb = &bta_pan_cb.scb[index]; if (p_scb->in_use && p_scb->app_id != bta_pan_cb.app_id[0] && bd_addr != p_scb->bd_addr) { return true; } } return false; } /******************************************************************************* * * Function bta_pan_enable * * Description * * * * Returns void * ******************************************************************************/ void bta_pan_enable(tBTA_PAN_DATA* p_data) { tPAN_REGISTER reg_data; uint16_t initial_discoverability; uint16_t initial_connectability; uint16_t d_window; uint16_t d_interval; uint16_t c_window; uint16_t c_interval; bta_pan_cb.p_cback = p_data->api_enable.p_cback; reg_data.pan_conn_state_cb = bta_pan_conn_state_cback; reg_data.pan_bridge_req_cb = NULL; reg_data.pan_data_buf_ind_cb = bta_pan_data_buf_ind_cback; reg_data.pan_data_ind_cb = NULL; reg_data.pan_pfilt_ind_cb = bta_pan_pfilt_ind_cback; reg_data.pan_mfilt_ind_cb = bta_pan_mfilt_ind_cback; reg_data.pan_tx_data_flow_cb = bta_pan_data_flow_cb; /* read connectability and discoverability settings. Pan profile changes the settings. We have to change it back to be consistent with other bta subsystems */ initial_connectability = BTM_ReadConnectability(&c_window, &c_interval); initial_discoverability = BTM_ReadDiscoverability(&d_window, &d_interval); PAN_Register(®_data); /* set it back to original value */ BTM_SetDiscoverability(initial_discoverability, d_window, d_interval); BTM_SetConnectability(initial_connectability, c_window, c_interval); bta_pan_cb.flow_mask = bta_pan_co_init(&bta_pan_cb.q_level); bta_pan_cb.p_cback(BTA_PAN_ENABLE_EVT, NULL); } /******************************************************************************* * * Function bta_pan_set_role * * Description * * Returns void * ******************************************************************************/ void bta_pan_set_role(tBTA_PAN_DATA* p_data) { tPAN_RESULT status; tBTA_PAN bta_pan; uint8_t sec[3]; bta_pan_cb.app_id[0] = p_data->api_set_role.user_app_id; bta_pan_cb.app_id[1] = p_data->api_set_role.gn_app_id; bta_pan_cb.app_id[2] = p_data->api_set_role.nap_app_id; sec[0] = p_data->api_set_role.user_sec_mask; sec[1] = p_data->api_set_role.gn_sec_mask; sec[2] = p_data->api_set_role.nap_sec_mask; /* set security correctly in api and here */ status = PAN_SetRole( p_data->api_set_role.role, sec, p_data->api_set_role.user_name, p_data->api_set_role.gn_name, p_data->api_set_role.nap_name); bta_pan.set_role.role = p_data->api_set_role.role; if (status == PAN_SUCCESS) { if (p_data->api_set_role.role & PAN_ROLE_NAP_SERVER) bta_sys_add_uuid(UUID_SERVCLASS_NAP); else bta_sys_remove_uuid(UUID_SERVCLASS_NAP); if (p_data->api_set_role.role & PAN_ROLE_GN_SERVER) bta_sys_add_uuid(UUID_SERVCLASS_GN); else bta_sys_remove_uuid(UUID_SERVCLASS_GN); if (p_data->api_set_role.role & PAN_ROLE_CLIENT) bta_sys_add_uuid(UUID_SERVCLASS_PANU); else bta_sys_remove_uuid(UUID_SERVCLASS_PANU); bta_pan.set_role.status = BTA_PAN_SUCCESS; } /* if status is not success clear everything */ else { PAN_SetRole(0, 0, NULL, NULL, NULL); bta_sys_remove_uuid(UUID_SERVCLASS_NAP); bta_sys_remove_uuid(UUID_SERVCLASS_GN); bta_sys_remove_uuid(UUID_SERVCLASS_PANU); bta_pan.set_role.status = BTA_PAN_FAIL; } bta_pan_cb.p_cback(BTA_PAN_SET_ROLE_EVT, &bta_pan); } /******************************************************************************* * * Function bta_pan_disable * * Description * * * * Returns void * ******************************************************************************/ void bta_pan_disable(void) { BT_HDR* p_buf; tBTA_PAN_SCB* p_scb = &bta_pan_cb.scb[0]; uint8_t i; /* close all connections */ PAN_SetRole(0, NULL, NULL, NULL, NULL); #if (BTA_EIR_CANNED_UUID_LIST != TRUE) bta_sys_remove_uuid(UUID_SERVCLASS_NAP); bta_sys_remove_uuid(UUID_SERVCLASS_GN); bta_sys_remove_uuid(UUID_SERVCLASS_PANU); #endif // BTA_EIR_CANNED_UUID_LIST /* free all queued up data buffers */ for (i = 0; i < BTA_PAN_NUM_CONN; i++, p_scb++) { if (p_scb->in_use) { while ((p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_scb->data_queue)) != NULL) osi_free(p_buf); bta_pan_co_close(p_scb->handle, p_scb->app_id); } } PAN_Deregister(); } /******************************************************************************* * * Function bta_pan_open * * Description * * Returns void * ******************************************************************************/ void bta_pan_open(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) { tPAN_RESULT status; tBTA_PAN bta_pan; status = PAN_Connect(p_data->api_open.bd_addr, p_data->api_open.local_role, p_data->api_open.peer_role, &p_scb->handle); APPL_TRACE_DEBUG("%s pan connect status: %d", __func__, status); if (status == PAN_SUCCESS) { p_scb->bd_addr = p_data->api_open.bd_addr; p_scb->local_role = p_data->api_open.local_role; p_scb->peer_role = p_data->api_open.peer_role; bta_pan.opening.bd_addr = p_data->api_open.bd_addr; bta_pan.opening.handle = p_scb->handle; bta_pan_cb.p_cback(BTA_PAN_OPENING_EVT, &bta_pan); } else { bta_pan_scb_dealloc(p_scb); bta_pan.open.bd_addr = p_data->api_open.bd_addr; bta_pan.open.status = BTA_PAN_FAIL; bta_pan.open.local_role = p_data->api_open.local_role; bta_pan.open.peer_role = p_data->api_open.peer_role; bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, &bta_pan); } } /******************************************************************************* * * Function bta_pan_close * * Description * * * * Returns void * ******************************************************************************/ void bta_pan_api_close(tBTA_PAN_SCB* p_scb, UNUSED_ATTR tBTA_PAN_DATA* p_data) { tBTA_PAN_CONN* p_buf = (tBTA_PAN_CONN*)osi_malloc(sizeof(tBTA_PAN_CONN)); PAN_Disconnect(p_scb->handle); /* * Send an event to BTA so that application will get the connection * close event. */ p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT; p_buf->hdr.layer_specific = p_scb->handle; bta_sys_sendmsg(p_buf); } /******************************************************************************* * * Function bta_pan_conn_open * * Description process connection open event * * Returns void * ******************************************************************************/ void bta_pan_conn_open(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) { tBTA_PAN bta_pan; APPL_TRACE_DEBUG("%s pan connection result: %d", __func__, p_data->conn.result); bta_pan.open.bd_addr = p_scb->bd_addr; bta_pan.open.handle = p_scb->handle; bta_pan.open.local_role = p_scb->local_role; bta_pan.open.peer_role = p_scb->peer_role; if (p_data->conn.result == PAN_SUCCESS) { bta_pan.open.status = BTA_PAN_SUCCESS; p_scb->pan_flow_enable = true; p_scb->app_flow_enable = true; bta_sys_conn_open(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr); } else { bta_pan_scb_dealloc(p_scb); bta_pan.open.status = BTA_PAN_FAIL; } p_scb->pan_flow_enable = true; p_scb->app_flow_enable = true; /* If app_id is NAP/GN, check whether there are multiple connections. If there are, provide a special app_id to dm to enforce master role only. */ if ((p_scb->app_id == bta_pan_cb.app_id[1] || p_scb->app_id == bta_pan_cb.app_id[2]) && bta_pan_has_multiple_connections(p_scb->app_id)) { p_scb->app_id = BTA_APP_ID_PAN_MULTI; } bta_sys_conn_open(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr); bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, &bta_pan); } /******************************************************************************* * * Function bta_pan_conn_close * * Description process connection close event * * * * Returns void * ******************************************************************************/ void bta_pan_conn_close(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) { tBTA_PAN bta_pan; BT_HDR* p_buf; bta_pan.close.handle = p_data->hdr.layer_specific; bta_sys_conn_close(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr); /* free all queued up data buffers */ while ((p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_scb->data_queue)) != NULL) osi_free(p_buf); bta_pan_scb_dealloc(p_scb); bta_pan_cb.p_cback(BTA_PAN_CLOSE_EVT, &bta_pan); } /******************************************************************************* * * Function bta_pan_rx_path * * Description Handle data on the RX path (data sent from the phone to * BTA). * * * Returns void * ******************************************************************************/ void bta_pan_rx_path(tBTA_PAN_SCB* p_scb, UNUSED_ATTR tBTA_PAN_DATA* p_data) { /* if data path configured for rx pull */ if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PULL) { /* if we can accept data */ if (p_scb->pan_flow_enable) { /* call application callout function for rx path */ bta_pan_co_rx_path(p_scb->handle, p_scb->app_id); } } /* else data path configured for rx push */ else { } } /******************************************************************************* * * Function bta_pan_tx_path * * Description Handle the TX data path (data sent from BTA to the phone). * * * Returns void * ******************************************************************************/ void bta_pan_tx_path(tBTA_PAN_SCB* p_scb, UNUSED_ATTR tBTA_PAN_DATA* p_data) { /* if data path configured for tx pull */ if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PULL) { bta_pan_pm_conn_busy(p_scb); /* call application callout function for tx path */ bta_pan_co_tx_path(p_scb->handle, p_scb->app_id); /* free data that exceeds queue level */ while (fixed_queue_length(p_scb->data_queue) > bta_pan_cb.q_level) osi_free(fixed_queue_try_dequeue(p_scb->data_queue)); bta_pan_pm_conn_idle(p_scb); } /* if configured for zero copy push */ else if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PUSH_BUF) { /* if app can accept data */ if (p_scb->app_flow_enable) { BT_HDR* p_buf; /* read data from the queue */ p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_scb->data_queue); if (p_buf != NULL) { /* send data to application */ bta_pan_co_tx_writebuf(p_scb->handle, p_scb->app_id, ((tBTA_PAN_DATA_PARAMS*)p_buf)->src, ((tBTA_PAN_DATA_PARAMS*)p_buf)->dst, ((tBTA_PAN_DATA_PARAMS*)p_buf)->protocol, p_buf, ((tBTA_PAN_DATA_PARAMS*)p_buf)->ext, ((tBTA_PAN_DATA_PARAMS*)p_buf)->forward); } /* free data that exceeds queue level */ while (fixed_queue_length(p_scb->data_queue) > bta_pan_cb.q_level) osi_free(fixed_queue_try_dequeue(p_scb->data_queue)); /* if there is more data to be passed to upper layer */ if (!fixed_queue_is_empty(p_scb->data_queue)) { p_buf = (BT_HDR*)osi_malloc(sizeof(BT_HDR)); p_buf->layer_specific = p_scb->handle; p_buf->event = BTA_PAN_RX_FROM_BNEP_READY_EVT; bta_sys_sendmsg(p_buf); } } } } /******************************************************************************* * * Function bta_pan_tx_flow * * Description Set the application flow control state. * * * Returns void * ******************************************************************************/ void bta_pan_tx_flow(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) { p_scb->app_flow_enable = p_data->ci_tx_flow.enable; } /******************************************************************************* * * Function bta_pan_write_buf * * Description Handle a bta_pan_ci_rx_writebuf() and send data to PAN. * * * Returns void * ******************************************************************************/ void bta_pan_write_buf(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) { if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PUSH_BUF) { bta_pan_pm_conn_busy(p_scb); PAN_WriteBuf(p_scb->handle, ((tBTA_PAN_DATA_PARAMS*)p_data)->dst, ((tBTA_PAN_DATA_PARAMS*)p_data)->src, ((tBTA_PAN_DATA_PARAMS*)p_data)->protocol, (BT_HDR*)p_data, ((tBTA_PAN_DATA_PARAMS*)p_data)->ext); bta_pan_pm_conn_idle(p_scb); } } /******************************************************************************* * * Function bta_pan_free_buf * * Description Frees the data buffer during closing state * * * Returns void * ******************************************************************************/ void bta_pan_free_buf(UNUSED_ATTR tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) { osi_free(p_data); } #endif /* PAN_INCLUDED */