1/****************************************************************************** 2 * 3 * Copyright (C) 2009-2012 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19/******************************************************************************* 20 * 21 * Filename: btif_pan_internal.h 22 * 23 * Description: Bluetooth pan internal 24 * 25 ******************************************************************************/ 26 27#ifndef BTIF_PAN_INTERNAL_H 28#define BTIF_PAN_INTERNAL_H 29 30#include "bt_types.h" 31#include "btif_pan.h" 32 33/******************************************************************************* 34 * Constants & Macros 35 ******************************************************************************/ 36 37#define PAN_NAP_SERVICE_NAME "Android Network Access Point" 38#define PANU_SERVICE_NAME "Android Network User" 39#define TAP_IF_NAME "bt-pan" 40#define ETH_ADDR_LEN 6 41#define TAP_MAX_PKT_WRITE_LEN 2000 42#ifndef PAN_SECURITY 43#define PAN_SECURITY \ 44 (BTM_SEC_IN_AUTHENTICATE | BTM_SEC_OUT_AUTHENTICATE | BTM_SEC_IN_ENCRYPT | \ 45 BTM_SEC_OUT_ENCRYPT) 46#endif 47 48#define PAN_STATE_UNKNOWN 0 49#define PAN_STATE_OPEN 1 50#define PAN_STATE_CLOSE 2 51#ifndef PAN_ROLE_INACTIVE 52#define PAN_ROLE_INACTIVE 0 53#endif 54 55/******************************************************************************* 56 * Type definitions and return values 57 ******************************************************************************/ 58 59typedef struct eth_hdr { 60 unsigned char h_dest[ETH_ADDR_LEN]; 61 unsigned char h_src[ETH_ADDR_LEN]; 62 short h_proto; 63} tETH_HDR; 64 65typedef struct { 66 int handle; 67 int state; 68 uint16_t protocol; 69 BD_ADDR peer; 70 int local_role; 71 int remote_role; 72 unsigned char eth_addr[ETH_ADDR_LEN]; 73} btpan_conn_t; 74 75typedef struct { 76 int btl_if_handle; 77 int btl_if_handle_panu; 78 int tap_fd; 79 int enabled; 80 int open_count; 81 int flow; // 1: outbound data flow on; 0: outbound data flow off 82 btpan_conn_t conns[MAX_PAN_CONNS]; 83 int congest_packet_size; 84 unsigned char congest_packet[1600]; // max ethernet packet size 85} btpan_cb_t; 86 87/******************************************************************************* 88 * Functions 89 ******************************************************************************/ 90 91extern btpan_cb_t btpan_cb; 92btpan_conn_t* btpan_new_conn(int handle, const BD_ADDR addr, int local_role, 93 int peer_role); 94btpan_conn_t* btpan_find_conn_addr(const BD_ADDR addr); 95btpan_conn_t* btpan_find_conn_handle(uint16_t handle); 96void btpan_set_flow_control(bool enable); 97int btpan_get_connected_count(void); 98int btpan_tap_open(void); 99void create_tap_read_thread(int tap_fd); 100void destroy_tap_read_thread(void); 101int btpan_tap_close(int tap_fd); 102int btpan_tap_send(int tap_fd, const BD_ADDR src, const BD_ADDR dst, 103 uint16_t protocol, const char* buff, uint16_t size, bool ext, 104 bool forward); 105 106static inline int is_empty_eth_addr(const BD_ADDR addr) { 107 int i; 108 for (i = 0; i < BD_ADDR_LEN; i++) 109 if (addr[i] != 0) return 0; 110 return 1; 111} 112 113static inline int is_valid_bt_eth_addr(const BD_ADDR addr) { 114 if (is_empty_eth_addr(addr)) return 0; 115 return addr[0] & 1 ? 0 : 1; /* Cannot be multicasting address */ 116} 117 118#endif 119