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Commit | Line | Data |
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38351c66 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
4 | ||
5 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License version 2 as | |
9 | published by the Free Software Foundation; | |
10 | ||
11 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
12 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
14 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
38351c66 GP |
15 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
16 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
17 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
19 | ||
38351c66 GP |
20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
22 | SOFTWARE IS DISCLAIMED. |
23 | */ | |
24 | ||
25 | #ifndef __BLUETOOTH_H | |
26 | #define __BLUETOOTH_H | |
27 | ||
1da177e4 LT |
28 | #include <linux/poll.h> |
29 | #include <net/sock.h> | |
256a06c8 | 30 | #include <linux/seq_file.h> |
1da177e4 LT |
31 | |
32 | #ifndef AF_BLUETOOTH | |
33 | #define AF_BLUETOOTH 31 | |
34 | #define PF_BLUETOOTH AF_BLUETOOTH | |
35 | #endif | |
36 | ||
d095c1eb AE |
37 | /* Bluetooth versions */ |
38 | #define BLUETOOTH_VER_1_1 1 | |
39 | #define BLUETOOTH_VER_1_2 2 | |
40 | #define BLUETOOTH_VER_2_0 3 | |
41 | ||
1da177e4 LT |
42 | /* Reserv for core and drivers use */ |
43 | #define BT_SKB_RESERVE 8 | |
44 | ||
45 | #define BTPROTO_L2CAP 0 | |
46 | #define BTPROTO_HCI 1 | |
47 | #define BTPROTO_SCO 2 | |
48 | #define BTPROTO_RFCOMM 3 | |
49 | #define BTPROTO_BNEP 4 | |
50 | #define BTPROTO_CMTP 5 | |
51 | #define BTPROTO_HIDP 6 | |
52 | #define BTPROTO_AVDTP 7 | |
53 | ||
54 | #define SOL_HCI 0 | |
55 | #define SOL_L2CAP 6 | |
56 | #define SOL_SCO 17 | |
57 | #define SOL_RFCOMM 18 | |
58 | ||
8c1b2355 MH |
59 | #define BT_SECURITY 4 |
60 | struct bt_security { | |
61 | __u8 level; | |
8f360119 | 62 | __u8 key_size; |
8c1b2355 MH |
63 | }; |
64 | #define BT_SECURITY_SDP 0 | |
65 | #define BT_SECURITY_LOW 1 | |
66 | #define BT_SECURITY_MEDIUM 2 | |
67 | #define BT_SECURITY_HIGH 3 | |
68 | ||
c4f912e1 MH |
69 | #define BT_DEFER_SETUP 7 |
70 | ||
e702112f AE |
71 | #define BT_FLUSHABLE 8 |
72 | ||
73 | #define BT_FLUSHABLE_OFF 0 | |
74 | #define BT_FLUSHABLE_ON 1 | |
75 | ||
14b12d0b JG |
76 | #define BT_POWER 9 |
77 | struct bt_power { | |
78 | __u8 force_active; | |
79 | }; | |
80 | #define BT_POWER_FORCE_ACTIVE_OFF 0 | |
81 | #define BT_POWER_FORCE_ACTIVE_ON 1 | |
82 | ||
c14968b0 MM |
83 | #define BT_CHANNEL_POLICY 10 |
84 | ||
85 | /* BR/EDR only (default policy) | |
86 | * AMP controllers cannot be used. | |
87 | * Channel move requests from the remote device are denied. | |
88 | * If the L2CAP channel is currently using AMP, move the channel to BR/EDR. | |
89 | */ | |
90 | #define BT_CHANNEL_POLICY_BREDR_ONLY 0 | |
91 | ||
92 | /* BR/EDR Preferred | |
93 | * Allow use of AMP controllers. | |
94 | * If the L2CAP channel is currently on AMP, move it to BR/EDR. | |
95 | * Channel move requests from the remote device are allowed. | |
96 | */ | |
97 | #define BT_CHANNEL_POLICY_BREDR_PREFERRED 1 | |
98 | ||
99 | /* AMP Preferred | |
100 | * Allow use of AMP controllers | |
101 | * If the L2CAP channel is currently on BR/EDR and AMP controller | |
102 | * resources are available, initiate a channel move to AMP. | |
103 | * Channel move requests from the remote device are allowed. | |
104 | * If the L2CAP socket has not been connected yet, try to create | |
105 | * and configure the channel directly on an AMP controller rather | |
106 | * than BR/EDR. | |
107 | */ | |
108 | #define BT_CHANNEL_POLICY_AMP_PREFERRED 2 | |
109 | ||
ad10b1a4 FD |
110 | #define BT_VOICE 11 |
111 | struct bt_voice { | |
112 | __u16 setting; | |
113 | }; | |
114 | ||
115 | #define BT_VOICE_TRANSPARENT 0x0003 | |
116 | #define BT_VOICE_CVSD_16BIT 0x0060 | |
117 | ||
3ed7003e JP |
118 | __printf(1, 2) |
119 | int bt_info(const char *fmt, ...); | |
120 | __printf(1, 2) | |
121 | int bt_err(const char *fmt, ...); | |
122 | ||
123 | #define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__) | |
124 | #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__) | |
125 | #define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__) | |
1da177e4 | 126 | |
1da177e4 LT |
127 | /* Connection and socket states */ |
128 | enum { | |
129 | BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */ | |
130 | BT_OPEN, | |
131 | BT_BOUND, | |
132 | BT_LISTEN, | |
133 | BT_CONNECT, | |
134 | BT_CONNECT2, | |
135 | BT_CONFIG, | |
136 | BT_DISCONN, | |
137 | BT_CLOSED | |
138 | }; | |
139 | ||
20d1803a AE |
140 | /* If unused will be removed by compiler */ |
141 | static inline const char *state_to_string(int state) | |
142 | { | |
143 | switch (state) { | |
144 | case BT_CONNECTED: | |
145 | return "BT_CONNECTED"; | |
146 | case BT_OPEN: | |
147 | return "BT_OPEN"; | |
148 | case BT_BOUND: | |
149 | return "BT_BOUND"; | |
150 | case BT_LISTEN: | |
151 | return "BT_LISTEN"; | |
152 | case BT_CONNECT: | |
153 | return "BT_CONNECT"; | |
154 | case BT_CONNECT2: | |
155 | return "BT_CONNECT2"; | |
156 | case BT_CONFIG: | |
157 | return "BT_CONFIG"; | |
158 | case BT_DISCONN: | |
159 | return "BT_DISCONN"; | |
160 | case BT_CLOSED: | |
161 | return "BT_CLOSED"; | |
162 | } | |
163 | ||
164 | return "invalid state"; | |
165 | } | |
166 | ||
1da177e4 LT |
167 | /* BD Address */ |
168 | typedef struct { | |
169 | __u8 b[6]; | |
66c853cc | 170 | } __packed bdaddr_t; |
1da177e4 | 171 | |
591f47f3 AG |
172 | /* BD Address type */ |
173 | #define BDADDR_BREDR 0x00 | |
174 | #define BDADDR_LE_PUBLIC 0x01 | |
175 | #define BDADDR_LE_RANDOM 0x02 | |
176 | ||
679efe2b JH |
177 | static inline bool bdaddr_type_is_valid(__u8 type) |
178 | { | |
179 | switch (type) { | |
180 | case BDADDR_BREDR: | |
181 | case BDADDR_LE_PUBLIC: | |
182 | case BDADDR_LE_RANDOM: | |
183 | return true; | |
184 | } | |
185 | ||
186 | return false; | |
187 | } | |
188 | ||
189 | static inline bool bdaddr_type_is_le(__u8 type) | |
190 | { | |
191 | switch (type) { | |
192 | case BDADDR_LE_PUBLIC: | |
193 | case BDADDR_LE_RANDOM: | |
194 | return true; | |
195 | } | |
196 | ||
197 | return false; | |
198 | } | |
199 | ||
a59ac2f7 MH |
200 | #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}}) |
201 | #define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}}) | |
1da177e4 LT |
202 | |
203 | /* Copy, swap, convert BD Address */ | |
f53c20e9 | 204 | static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2) |
1da177e4 LT |
205 | { |
206 | return memcmp(ba1, ba2, sizeof(bdaddr_t)); | |
207 | } | |
f53c20e9 | 208 | static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src) |
1da177e4 LT |
209 | { |
210 | memcpy(dst, src, sizeof(bdaddr_t)); | |
211 | } | |
212 | ||
213 | void baswap(bdaddr_t *dst, bdaddr_t *src); | |
1da177e4 LT |
214 | |
215 | /* Common socket structures and functions */ | |
216 | ||
217 | #define bt_sk(__sk) ((struct bt_sock *) __sk) | |
218 | ||
219 | struct bt_sock { | |
220 | struct sock sk; | |
1da177e4 LT |
221 | struct list_head accept_q; |
222 | struct sock *parent; | |
c5daa683 | 223 | unsigned long flags; |
d9763698 | 224 | void (*skb_msg_name)(struct sk_buff *, void *, int *); |
c5daa683 GP |
225 | }; |
226 | ||
227 | enum { | |
228 | BT_SK_DEFER_SETUP, | |
229 | BT_SK_SUSPEND, | |
1da177e4 LT |
230 | }; |
231 | ||
232 | struct bt_sock_list { | |
233 | struct hlist_head head; | |
234 | rwlock_t lock; | |
256a06c8 | 235 | #ifdef CONFIG_PROC_FS |
256a06c8 MY |
236 | int (* custom_seq_show)(struct seq_file *, void *); |
237 | #endif | |
1da177e4 LT |
238 | }; |
239 | ||
ec1b4cf7 | 240 | int bt_sock_register(int proto, const struct net_proto_family *ops); |
be9f97f0 | 241 | void bt_sock_unregister(int proto); |
1da177e4 LT |
242 | void bt_sock_link(struct bt_sock_list *l, struct sock *s); |
243 | void bt_sock_unlink(struct bt_sock_list *l, struct sock *s); | |
5a9d0a3f WR |
244 | int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
245 | struct msghdr *msg, size_t len, int flags); | |
796c86ee MM |
246 | int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock, |
247 | struct msghdr *msg, size_t len, int flags); | |
c3c7ea65 | 248 | uint bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait); |
3241ad82 | 249 | int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); |
1da177e4 | 250 | int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo); |
e793dcf0 | 251 | int bt_sock_wait_ready(struct sock *sk, unsigned long flags); |
1da177e4 LT |
252 | |
253 | void bt_accept_enqueue(struct sock *parent, struct sock *sk); | |
254 | void bt_accept_unlink(struct sock *sk); | |
255 | struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock); | |
256 | ||
257 | /* Skb helpers */ | |
00e3112c | 258 | struct l2cap_ctrl { |
c3c7ea65 GP |
259 | unsigned int sframe:1, |
260 | poll:1, | |
261 | final:1, | |
262 | fcs:1, | |
263 | sar:2, | |
264 | super:2; | |
00e3112c MM |
265 | __u16 reqseq; |
266 | __u16 txseq; | |
267 | __u8 retries; | |
268 | }; | |
269 | ||
3119ae95 JH |
270 | struct hci_dev; |
271 | ||
272 | typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status); | |
273 | ||
274 | struct hci_req_ctrl { | |
275 | bool start; | |
02350a72 | 276 | u8 event; |
3119ae95 JH |
277 | hci_req_complete_t complete; |
278 | }; | |
279 | ||
1da177e4 | 280 | struct bt_skb_cb { |
0d48d939 MH |
281 | __u8 pkt_type; |
282 | __u8 incoming; | |
33e882a5 | 283 | __u16 expect; |
14b12d0b | 284 | __u8 force_active; |
0e790c64 | 285 | struct l2cap_chan *chan; |
00e3112c | 286 | struct l2cap_ctrl control; |
3119ae95 | 287 | struct hci_req_ctrl req; |
2edf870d MH |
288 | bdaddr_t bdaddr; |
289 | __le16 psm; | |
1da177e4 | 290 | }; |
1c2acffb | 291 | #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb)) |
1da177e4 | 292 | |
dd0fc66f | 293 | static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how) |
1da177e4 LT |
294 | { |
295 | struct sk_buff *skb; | |
296 | ||
c3c7ea65 GP |
297 | skb = alloc_skb(len + BT_SKB_RESERVE, how); |
298 | if (skb) { | |
1da177e4 LT |
299 | skb_reserve(skb, BT_SKB_RESERVE); |
300 | bt_cb(skb)->incoming = 0; | |
301 | } | |
302 | return skb; | |
303 | } | |
304 | ||
5a9d0a3f WR |
305 | static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, |
306 | unsigned long len, int nb, int *err) | |
1da177e4 LT |
307 | { |
308 | struct sk_buff *skb; | |
309 | ||
c3c7ea65 GP |
310 | skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err); |
311 | if (skb) { | |
1da177e4 LT |
312 | skb_reserve(skb, BT_SKB_RESERVE); |
313 | bt_cb(skb)->incoming = 0; | |
314 | } | |
e454c844 GP |
315 | |
316 | if (!skb && *err) | |
317 | return NULL; | |
318 | ||
319 | *err = sock_error(sk); | |
320 | if (*err) | |
321 | goto out; | |
322 | ||
323 | if (sk->sk_shutdown) { | |
324 | *err = -ECONNRESET; | |
325 | goto out; | |
326 | } | |
1da177e4 LT |
327 | |
328 | return skb; | |
e454c844 GP |
329 | |
330 | out: | |
331 | kfree_skb(skb); | |
332 | return NULL; | |
1da177e4 LT |
333 | } |
334 | ||
e175072f | 335 | int bt_to_errno(__u16 code); |
1da177e4 | 336 | |
e74e58f8 JP |
337 | int hci_sock_init(void); |
338 | void hci_sock_cleanup(void); | |
6516455d | 339 | |
e74e58f8 JP |
340 | int bt_sysfs_init(void); |
341 | void bt_sysfs_cleanup(void); | |
6516455d | 342 | |
e74e58f8 JP |
343 | int bt_procfs_init(struct net *net, const char *name, |
344 | struct bt_sock_list *sk_list, | |
345 | int (*seq_show)(struct seq_file *, void *)); | |
346 | void bt_procfs_cleanup(struct net *net, const char *name); | |
256a06c8 | 347 | |
aef7d97c | 348 | extern struct dentry *bt_debugfs; |
be9d1227 | 349 | |
64274518 GP |
350 | int l2cap_init(void); |
351 | void l2cap_exit(void); | |
64274518 | 352 | |
64274518 GP |
353 | int sco_init(void); |
354 | void sco_exit(void); | |
64274518 | 355 | |
d22015aa OP |
356 | void bt_sock_reclassify_lock(struct sock *sk, int proto); |
357 | ||
1da177e4 | 358 | #endif /* __BLUETOOTH_H */ |