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 "btif_pan.h" 31#include "bt_types.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#ifndef PAN_SECURITY 42#define PAN_SECURITY (BTM_SEC_IN_AUTHENTICATE | BTM_SEC_OUT_AUTHENTICATE | BTM_SEC_IN_ENCRYPT | BTM_SEC_OUT_ENCRYPT) 43#endif 44 45#define PAN_STATE_UNKNOWN 0 46#define PAN_STATE_OPEN 1 47#define PAN_STATE_CLOSE 2 48#ifndef PAN_ROLE_INACTIVE 49#define PAN_ROLE_INACTIVE 0 50#endif 51 52 53/******************************************************************************* 54** Type definitions and return values 55********************************************************************************/ 56 57typedef struct eth_hdr 58{ 59 unsigned char h_dest[ETH_ADDR_LEN]; 60 unsigned char h_src[ETH_ADDR_LEN]; 61 short h_proto; 62} tETH_HDR; 63 64typedef struct 65{ 66 int handle; 67 int state; 68 UINT16 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{ 77 int btl_if_handle; 78 int btl_if_handle_panu; 79 int tap_fd; 80 int enabled; 81 int open_count; 82 int flow; // 1: outbound data flow on; 0: outbound data flow off 83 btpan_conn_t conns[MAX_PAN_CONNS]; 84 int congest_packet_size; 85 unsigned char congest_packet[1600]; //max ethernet packet size 86} btpan_cb_t; 87 88 89/******************************************************************************* 90** Functions 91********************************************************************************/ 92 93extern btpan_cb_t btpan_cb; 94btpan_conn_t *btpan_new_conn(int handle, const BD_ADDR addr, int local_role, int peer_role); 95btpan_conn_t *btpan_find_conn_addr(const BD_ADDR addr); 96btpan_conn_t *btpan_find_conn_handle(UINT16 handle); 97void btpan_set_flow_control(BOOLEAN enable); 98int btpan_get_connected_count(void); 99int btpan_tap_open(void); 100void create_tap_read_thread(int tap_fd); 101void destroy_tap_read_thread(void); 102int btpan_tap_close(int tap_fd); 103int btpan_tap_send(int tap_fd, const BD_ADDR src, const BD_ADDR dst, UINT16 protocol, 104 const char* buff, UINT16 size, BOOLEAN ext, BOOLEAN forward); 105 106static inline int is_empty_eth_addr(const BD_ADDR addr) 107{ 108 int i; 109 for(i = 0; i < BD_ADDR_LEN; i++) 110 if(addr[i] != 0) 111 return 0; 112 return 1; 113} 114 115static inline int is_valid_bt_eth_addr(const BD_ADDR addr) 116{ 117 if(is_empty_eth_addr(addr)) 118 return 0; 119 return addr[0] & 1 ? 0 : 1; /* Cannot be multicasting address */ 120} 121 122#endif 123