Bluetooth: change bt_sock_unregister() to return void
[deliverable/linux.git] / include / net / bluetooth / bluetooth.h
CommitLineData
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
60struct 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
77struct 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
3ed7003e
JP
110__printf(1, 2)
111int bt_info(const char *fmt, ...);
112__printf(1, 2)
113int bt_err(const char *fmt, ...);
114
115#define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__)
116#define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__)
117#define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__)
1da177e4 118
1da177e4
LT
119/* Connection and socket states */
120enum {
121 BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
122 BT_OPEN,
123 BT_BOUND,
124 BT_LISTEN,
125 BT_CONNECT,
126 BT_CONNECT2,
127 BT_CONFIG,
128 BT_DISCONN,
129 BT_CLOSED
130};
131
20d1803a
AE
132/* If unused will be removed by compiler */
133static inline const char *state_to_string(int state)
134{
135 switch (state) {
136 case BT_CONNECTED:
137 return "BT_CONNECTED";
138 case BT_OPEN:
139 return "BT_OPEN";
140 case BT_BOUND:
141 return "BT_BOUND";
142 case BT_LISTEN:
143 return "BT_LISTEN";
144 case BT_CONNECT:
145 return "BT_CONNECT";
146 case BT_CONNECT2:
147 return "BT_CONNECT2";
148 case BT_CONFIG:
149 return "BT_CONFIG";
150 case BT_DISCONN:
151 return "BT_DISCONN";
152 case BT_CLOSED:
153 return "BT_CLOSED";
154 }
155
156 return "invalid state";
157}
158
1da177e4
LT
159/* BD Address */
160typedef struct {
161 __u8 b[6];
66c853cc 162} __packed bdaddr_t;
1da177e4 163
591f47f3
AG
164/* BD Address type */
165#define BDADDR_BREDR 0x00
166#define BDADDR_LE_PUBLIC 0x01
167#define BDADDR_LE_RANDOM 0x02
168
679efe2b
JH
169static inline bool bdaddr_type_is_valid(__u8 type)
170{
171 switch (type) {
172 case BDADDR_BREDR:
173 case BDADDR_LE_PUBLIC:
174 case BDADDR_LE_RANDOM:
175 return true;
176 }
177
178 return false;
179}
180
181static inline bool bdaddr_type_is_le(__u8 type)
182{
183 switch (type) {
184 case BDADDR_LE_PUBLIC:
185 case BDADDR_LE_RANDOM:
186 return true;
187 }
188
189 return false;
190}
191
c3c7ea65
GP
192#define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0} })
193#define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff} })
1da177e4
LT
194
195/* Copy, swap, convert BD Address */
196static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2)
197{
198 return memcmp(ba1, ba2, sizeof(bdaddr_t));
199}
200static inline void bacpy(bdaddr_t *dst, bdaddr_t *src)
201{
202 memcpy(dst, src, sizeof(bdaddr_t));
203}
204
205void baswap(bdaddr_t *dst, bdaddr_t *src);
1da177e4
LT
206
207/* Common socket structures and functions */
208
209#define bt_sk(__sk) ((struct bt_sock *) __sk)
210
211struct bt_sock {
212 struct sock sk;
213 bdaddr_t src;
214 bdaddr_t dst;
215 struct list_head accept_q;
216 struct sock *parent;
c5daa683
GP
217 unsigned long flags;
218};
219
220enum {
221 BT_SK_DEFER_SETUP,
222 BT_SK_SUSPEND,
1da177e4
LT
223};
224
225struct bt_sock_list {
226 struct hlist_head head;
227 rwlock_t lock;
256a06c8
MY
228#ifdef CONFIG_PROC_FS
229 struct file_operations fops;
230 int (* custom_seq_show)(struct seq_file *, void *);
231#endif
1da177e4
LT
232};
233
ec1b4cf7 234int bt_sock_register(int proto, const struct net_proto_family *ops);
be9f97f0 235void bt_sock_unregister(int proto);
1da177e4
LT
236void bt_sock_link(struct bt_sock_list *l, struct sock *s);
237void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
5a9d0a3f
WR
238int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
239 struct msghdr *msg, size_t len, int flags);
796c86ee
MM
240int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
241 struct msghdr *msg, size_t len, int flags);
c3c7ea65 242uint bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait);
3241ad82 243int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
1da177e4
LT
244int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
245
246void bt_accept_enqueue(struct sock *parent, struct sock *sk);
247void bt_accept_unlink(struct sock *sk);
248struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
249
250/* Skb helpers */
00e3112c 251struct l2cap_ctrl {
c3c7ea65
GP
252 unsigned int sframe:1,
253 poll:1,
254 final:1,
255 fcs:1,
256 sar:2,
257 super:2;
00e3112c
MM
258 __u16 reqseq;
259 __u16 txseq;
260 __u8 retries;
261};
262
1da177e4 263struct bt_skb_cb {
0d48d939
MH
264 __u8 pkt_type;
265 __u8 incoming;
33e882a5 266 __u16 expect;
14b12d0b 267 __u8 force_active;
00e3112c 268 struct l2cap_ctrl control;
1da177e4 269};
1c2acffb 270#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
1da177e4 271
dd0fc66f 272static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
1da177e4
LT
273{
274 struct sk_buff *skb;
275
c3c7ea65
GP
276 skb = alloc_skb(len + BT_SKB_RESERVE, how);
277 if (skb) {
1da177e4
LT
278 skb_reserve(skb, BT_SKB_RESERVE);
279 bt_cb(skb)->incoming = 0;
280 }
281 return skb;
282}
283
5a9d0a3f
WR
284static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk,
285 unsigned long len, int nb, int *err)
1da177e4
LT
286{
287 struct sk_buff *skb;
288
c3c7ea65
GP
289 skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
290 if (skb) {
1da177e4
LT
291 skb_reserve(skb, BT_SKB_RESERVE);
292 bt_cb(skb)->incoming = 0;
293 }
e454c844
GP
294
295 if (!skb && *err)
296 return NULL;
297
298 *err = sock_error(sk);
299 if (*err)
300 goto out;
301
302 if (sk->sk_shutdown) {
303 *err = -ECONNRESET;
304 goto out;
305 }
1da177e4
LT
306
307 return skb;
e454c844
GP
308
309out:
310 kfree_skb(skb);
311 return NULL;
1da177e4
LT
312}
313
e175072f 314int bt_to_errno(__u16 code);
1da177e4 315
6516455d 316extern int hci_sock_init(void);
04005dd9 317extern void hci_sock_cleanup(void);
6516455d
MH
318
319extern int bt_sysfs_init(void);
320extern void bt_sysfs_cleanup(void);
321
256a06c8
MY
322extern int bt_procfs_init(struct module* module, struct net *net, const char *name,
323 struct bt_sock_list* sk_list,
324 int (* seq_show)(struct seq_file *, void *));
325extern void bt_procfs_cleanup(struct net *net, const char *name);
326
aef7d97c 327extern struct dentry *bt_debugfs;
be9d1227 328
64274518
GP
329int l2cap_init(void);
330void l2cap_exit(void);
64274518 331
64274518
GP
332int sco_init(void);
333void sco_exit(void);
64274518 334
d22015aa
OP
335void bt_sock_reclassify_lock(struct sock *sk, int proto);
336
1da177e4 337#endif /* __BLUETOOTH_H */
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