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
is_empty_eth_addr(const BD_ADDR addr)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
is_valid_bt_eth_addr(const BD_ADDR addr)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