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 TAP_MAX_PKT_WRITE_LEN 2000 41#ifndef PAN_SECURITY 42#define PAN_SECURITY \ 43 (BTM_SEC_IN_AUTHENTICATE | BTM_SEC_OUT_AUTHENTICATE | BTM_SEC_IN_ENCRYPT | \ 44 BTM_SEC_OUT_ENCRYPT) 45#endif 46 47#define PAN_STATE_UNKNOWN 0 48#define PAN_STATE_OPEN 1 49#define PAN_STATE_CLOSE 2 50#ifndef PAN_ROLE_INACTIVE 51#define PAN_ROLE_INACTIVE 0 52#endif 53 54/******************************************************************************* 55 * Type definitions and return values 56 ******************************************************************************/ 57 58typedef struct eth_hdr { 59 RawAddress h_dest; 60 RawAddress h_src; 61 short h_proto; 62} tETH_HDR; 63 64typedef struct { 65 int handle; 66 int state; 67 uint16_t protocol; 68 RawAddress peer; 69 int local_role; 70 int remote_role; 71 RawAddress eth_addr; 72} btpan_conn_t; 73 74typedef struct { 75 int btl_if_handle; 76 int btl_if_handle_panu; 77 int tap_fd; 78 int enabled; 79 int open_count; 80 int flow; // 1: outbound data flow on; 0: outbound data flow off 81 btpan_conn_t conns[MAX_PAN_CONNS]; 82 int congest_packet_size; 83 unsigned char congest_packet[1600]; // max ethernet packet size 84} btpan_cb_t; 85 86/******************************************************************************* 87 * Functions 88 ******************************************************************************/ 89 90extern btpan_cb_t btpan_cb; 91btpan_conn_t* btpan_new_conn(int handle, const RawAddress& addr, int local_role, 92 int peer_role); 93btpan_conn_t* btpan_find_conn_addr(const RawAddress& addr); 94btpan_conn_t* btpan_find_conn_handle(uint16_t handle); 95void btpan_set_flow_control(bool enable); 96int btpan_get_connected_count(void); 97int btpan_tap_open(void); 98void create_tap_read_thread(int tap_fd); 99void destroy_tap_read_thread(void); 100int btpan_tap_close(int tap_fd); 101int btpan_tap_send(int tap_fd, const RawAddress& src, const RawAddress& dst, 102 uint16_t protocol, const char* buff, uint16_t size, bool ext, 103 bool forward); 104 105static inline int is_empty_eth_addr(const RawAddress& addr) { 106 return addr == RawAddress::kEmpty; 107} 108 109static inline int is_valid_bt_eth_addr(const RawAddress& addr) { 110 if (is_empty_eth_addr(addr)) return 0; 111 return addr.address[0] & 1 ? 0 : 1; /* Cannot be multicasting address */ 112} 113 114#endif 115