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 #define TAP_MAX_PKT_WRITE_LEN 2000 42 #ifndef PAN_SECURITY 43 #define PAN_SECURITY (BTM_SEC_IN_AUTHENTICATE | BTM_SEC_OUT_AUTHENTICATE | BTM_SEC_IN_ENCRYPT | BTM_SEC_OUT_ENCRYPT) 44 #endif 45 46 #define PAN_STATE_UNKNOWN 0 47 #define PAN_STATE_OPEN 1 48 #define PAN_STATE_CLOSE 2 49 #ifndef PAN_ROLE_INACTIVE 50 #define PAN_ROLE_INACTIVE 0 51 #endif 52 53 54 /******************************************************************************* 55 ** Type definitions and return values 56 ********************************************************************************/ 57 58 typedef struct eth_hdr 59 { 60 unsigned char h_dest[ETH_ADDR_LEN]; 61 unsigned char h_src[ETH_ADDR_LEN]; 62 short h_proto; 63 } tETH_HDR; 64 65 typedef struct 66 { 67 int handle; 68 int state; 69 UINT16 protocol; 70 BD_ADDR peer; 71 int local_role; 72 int remote_role; 73 unsigned char eth_addr[ETH_ADDR_LEN]; 74 } btpan_conn_t; 75 76 typedef struct 77 { 78 int btl_if_handle; 79 int btl_if_handle_panu; 80 int tap_fd; 81 int enabled; 82 int open_count; 83 int flow; // 1: outbound data flow on; 0: outbound data flow off 84 btpan_conn_t conns[MAX_PAN_CONNS]; 85 int congest_packet_size; 86 unsigned char congest_packet[1600]; //max ethernet packet size 87 } btpan_cb_t; 88 89 90 /******************************************************************************* 91 ** Functions 92 ********************************************************************************/ 93 94 extern btpan_cb_t btpan_cb; 95 btpan_conn_t *btpan_new_conn(int handle, const BD_ADDR addr, int local_role, int peer_role); 96 btpan_conn_t *btpan_find_conn_addr(const BD_ADDR addr); 97 btpan_conn_t *btpan_find_conn_handle(UINT16 handle); 98 void btpan_set_flow_control(BOOLEAN enable); 99 int btpan_get_connected_count(void); 100 int btpan_tap_open(void); 101 void create_tap_read_thread(int tap_fd); 102 void destroy_tap_read_thread(void); 103 int btpan_tap_close(int tap_fd); 104 int btpan_tap_send(int tap_fd, const BD_ADDR src, const BD_ADDR dst, UINT16 protocol, 105 const char* buff, UINT16 size, BOOLEAN ext, BOOLEAN forward); 106 107 static inline int is_empty_eth_addr(const BD_ADDR addr) 108 { 109 int i; 110 for(i = 0; i < BD_ADDR_LEN; i++) 111 if(addr[i] != 0) 112 return 0; 113 return 1; 114 } 115 116 static inline int is_valid_bt_eth_addr(const BD_ADDR addr) 117 { 118 if(is_empty_eth_addr(addr)) 119 return 0; 120 return addr[0] & 1 ? 0 : 1; /* Cannot be multicasting address */ 121 } 122 123 #endif 124
