1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 BNEP protocol definition for Linux Bluetooth stack (BlueZ).
4 Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com>
5
6 */
7
8 #ifndef _BNEP_H
9 #define _BNEP_H
10
11 #include <linux/types.h>
12 #include <linux/crc32.h>
13 #include <net/bluetooth/bluetooth.h>
14
15 /* Limits */
16 #define BNEP_MAX_PROTO_FILTERS 5
17 #define BNEP_MAX_MULTICAST_FILTERS 20
18
19 /* UUIDs */
20 #define BNEP_BASE_UUID 0x0000000000001000800000805F9B34FB
21 #define BNEP_UUID16 0x02
22 #define BNEP_UUID32 0x04
23 #define BNEP_UUID128 0x16
24
25 #define BNEP_SVC_PANU 0x1115
26 #define BNEP_SVC_NAP 0x1116
27 #define BNEP_SVC_GN 0x1117
28
29 /* Packet types */
30 #define BNEP_GENERAL 0x00
31 #define BNEP_CONTROL 0x01
32 #define BNEP_COMPRESSED 0x02
33 #define BNEP_COMPRESSED_SRC_ONLY 0x03
34 #define BNEP_COMPRESSED_DST_ONLY 0x04
35
36 /* Control types */
37 #define BNEP_CMD_NOT_UNDERSTOOD 0x00
38 #define BNEP_SETUP_CONN_REQ 0x01
39 #define BNEP_SETUP_CONN_RSP 0x02
40 #define BNEP_FILTER_NET_TYPE_SET 0x03
41 #define BNEP_FILTER_NET_TYPE_RSP 0x04
42 #define BNEP_FILTER_MULTI_ADDR_SET 0x05
43 #define BNEP_FILTER_MULTI_ADDR_RSP 0x06
44
45 /* Extension types */
46 #define BNEP_EXT_CONTROL 0x00
47
48 /* Response messages */
49 #define BNEP_SUCCESS 0x00
50
51 #define BNEP_CONN_INVALID_DST 0x01
52 #define BNEP_CONN_INVALID_SRC 0x02
53 #define BNEP_CONN_INVALID_SVC 0x03
54 #define BNEP_CONN_NOT_ALLOWED 0x04
55
56 #define BNEP_FILTER_UNSUPPORTED_REQ 0x01
57 #define BNEP_FILTER_INVALID_RANGE 0x02
58 #define BNEP_FILTER_INVALID_MCADDR 0x02
59 #define BNEP_FILTER_LIMIT_REACHED 0x03
60 #define BNEP_FILTER_DENIED_SECURITY 0x04
61
62 /* L2CAP settings */
63 #define BNEP_MTU 1691
64 #define BNEP_PSM 0x0f
65 #define BNEP_FLUSH_TO 0xffff
66 #define BNEP_CONNECT_TO 15
67 #define BNEP_FILTER_TO 15
68
69 /* Headers */
70 #define BNEP_TYPE_MASK 0x7f
71 #define BNEP_EXT_HEADER 0x80
72
73 struct bnep_setup_conn_req {
74 __u8 type;
75 __u8 ctrl;
76 __u8 uuid_size;
77 __u8 service[];
78 } __packed;
79
80 struct bnep_set_filter_req {
81 __u8 type;
82 __u8 ctrl;
83 __be16 len;
84 __u8 list[];
85 } __packed;
86
87 struct bnep_control_rsp {
88 __u8 type;
89 __u8 ctrl;
90 __be16 resp;
91 } __packed;
92
93 struct bnep_ext_hdr {
94 __u8 type;
95 __u8 len;
96 __u8 data[];
97 } __packed;
98
99 /* BNEP ioctl defines */
100 #define BNEPCONNADD _IOW('B', 200, int)
101 #define BNEPCONNDEL _IOW('B', 201, int)
102 #define BNEPGETCONNLIST _IOR('B', 210, int)
103 #define BNEPGETCONNINFO _IOR('B', 211, int)
104 #define BNEPGETSUPPFEAT _IOR('B', 212, int)
105
106 #define BNEP_SETUP_RESPONSE 0
107 #define BNEP_SETUP_RSP_SENT 10
108
109 struct bnep_connadd_req {
110 int sock; /* Connected socket */
111 __u32 flags;
112 __u16 role;
113 char device[16]; /* Name of the Ethernet device */
114 };
115
116 struct bnep_conndel_req {
117 __u32 flags;
118 __u8 dst[ETH_ALEN];
119 };
120
121 struct bnep_conninfo {
122 __u32 flags;
123 __u16 role;
124 __u16 state;
125 __u8 dst[ETH_ALEN];
126 char device[16];
127 };
128
129 struct bnep_connlist_req {
130 __u32 cnum;
131 struct bnep_conninfo __user *ci;
132 };
133
134 struct bnep_proto_filter {
135 __u16 start;
136 __u16 end;
137 };
138
139 int bnep_add_connection(struct bnep_connadd_req *req, struct socket *sock);
140 int bnep_del_connection(struct bnep_conndel_req *req);
141 int bnep_get_connlist(struct bnep_connlist_req *req);
142 int bnep_get_conninfo(struct bnep_conninfo *ci);
143
144 /* BNEP sessions */
145 struct bnep_session {
146 struct list_head list;
147
148 unsigned int role;
149 unsigned long state;
150 unsigned long flags;
151 atomic_t terminate;
152 struct task_struct *task;
153
154 struct ethhdr eh;
155 struct msghdr msg;
156
157 struct bnep_proto_filter proto_filter[BNEP_MAX_PROTO_FILTERS];
158 unsigned long long mc_filter;
159
160 struct socket *sock;
161 struct net_device *dev;
162 };
163
164 void bnep_net_setup(struct net_device *dev);
165 int bnep_sock_init(void);
166 void bnep_sock_cleanup(void);
167
168 static inline int bnep_mc_hash(__u8 *addr)
169 {
170 return crc32_be(~0, addr, ETH_ALEN) >> 26;
171 }
172
173 #endif
174
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