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
57 typedef 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
64 typedef 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
75 typedef 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 btpan_conn_t conns[MAX_PAN_CONNS];
83 } btpan_cb_t;
84
85
86 /*******************************************************************************
87 ** Functions
88 ********************************************************************************/
89
90 extern btpan_cb_t btpan_cb;
91 btpan_conn_t *btpan_new_conn(int handle, const BD_ADDR addr, int local_role, int peer_role);
92 btpan_conn_t *btpan_find_conn_addr(const BD_ADDR addr);
93 btpan_conn_t *btpan_find_conn_handle(UINT16 handle);
94 int btpan_get_connected_count(void);
95 int btpan_tap_open(void);
96 void create_tap_read_thread(int tap_fd);
97 void destroy_tap_read_thread(void);
98 int btpan_tap_close(int tap_fd);
99 int btpan_tap_send(int tap_fd, const BD_ADDR src, const BD_ADDR dst, UINT16 protocol,
100 const char* buff, UINT16 size, BOOLEAN ext, BOOLEAN forward);
101
is_empty_eth_addr(const BD_ADDR addr)102 static inline int is_empty_eth_addr(const BD_ADDR addr)
103 {
104 int i;
105 for(i = 0; i < BD_ADDR_LEN; i++)
106 if(addr[i] != 0)
107 return 0;
108 return 1;
109 }
110
is_valid_bt_eth_addr(const BD_ADDR addr)111 static inline int is_valid_bt_eth_addr(const BD_ADDR addr)
112 {
113 if(is_empty_eth_addr(addr))
114 return 0;
115 return addr[0] & 1 ? 0 : 1; /* Cannot be multicasting address */
116 }
117
118 #endif
119