| /****************************************************************************** |
| * |
| * Copyright (C) 2009-2012 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. |
| * |
| ******************************************************************************/ |
| |
| /******************************************************************************* |
| * |
| * Filename: btif_pan_internal.h |
| * |
| * Description: Bluetooth pan internal |
| * |
| ******************************************************************************/ |
| |
| #ifndef BTIF_PAN_INTERNAL_H |
| #define BTIF_PAN_INTERNAL_H |
| |
| #include "bt_types.h" |
| #include "btif_pan.h" |
| |
| /******************************************************************************* |
| * Constants & Macros |
| ******************************************************************************/ |
| |
| #define PAN_NAP_SERVICE_NAME "Android Network Access Point" |
| #define PANU_SERVICE_NAME "Android Network User" |
| #define TAP_IF_NAME "bt-pan" |
| #define TAP_MAX_PKT_WRITE_LEN 2000 |
| #ifndef PAN_SECURITY |
| #define PAN_SECURITY \ |
| (BTM_SEC_IN_AUTHENTICATE | BTM_SEC_OUT_AUTHENTICATE | BTM_SEC_IN_ENCRYPT | \ |
| BTM_SEC_OUT_ENCRYPT) |
| #endif |
| |
| #define PAN_STATE_UNKNOWN 0 |
| #define PAN_STATE_OPEN 1 |
| #define PAN_STATE_CLOSE 2 |
| #ifndef PAN_ROLE_INACTIVE |
| #define PAN_ROLE_INACTIVE 0 |
| #endif |
| |
| /******************************************************************************* |
| * Type definitions and return values |
| ******************************************************************************/ |
| |
| typedef struct eth_hdr { |
| RawAddress h_dest; |
| RawAddress h_src; |
| short h_proto; |
| } tETH_HDR; |
| |
| typedef struct { |
| int handle; |
| int state; |
| uint16_t protocol; |
| RawAddress peer; |
| int local_role; |
| int remote_role; |
| RawAddress eth_addr; |
| } btpan_conn_t; |
| |
| typedef struct { |
| int btl_if_handle; |
| int btl_if_handle_panu; |
| int tap_fd; |
| int enabled; |
| int open_count; |
| int flow; // 1: outbound data flow on; 0: outbound data flow off |
| btpan_conn_t conns[MAX_PAN_CONNS]; |
| int congest_packet_size; |
| unsigned char congest_packet[1600]; // max ethernet packet size |
| } btpan_cb_t; |
| |
| /******************************************************************************* |
| * Functions |
| ******************************************************************************/ |
| |
| extern btpan_cb_t btpan_cb; |
| btpan_conn_t* btpan_new_conn(int handle, const RawAddress& addr, int local_role, |
| int peer_role); |
| btpan_conn_t* btpan_find_conn_addr(const RawAddress& addr); |
| btpan_conn_t* btpan_find_conn_handle(uint16_t handle); |
| void btpan_set_flow_control(bool enable); |
| int btpan_get_connected_count(void); |
| int btpan_tap_open(void); |
| void create_tap_read_thread(int tap_fd); |
| void destroy_tap_read_thread(void); |
| int btpan_tap_close(int tap_fd); |
| int btpan_tap_send(int tap_fd, const RawAddress& src, const RawAddress& dst, |
| uint16_t protocol, const char* buff, uint16_t size, bool ext, |
| bool forward); |
| |
| static inline int is_empty_eth_addr(const RawAddress& addr) { |
| return addr == bd_addr_empty; |
| } |
| |
| static inline int is_valid_bt_eth_addr(const RawAddress& addr) { |
| if (is_empty_eth_addr(addr)) return 0; |
| return addr.address[0] & 1 ? 0 : 1; /* Cannot be multicasting address */ |
| } |
| |
| #endif |