Linux kernel mirror (for testing)
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linux
1/*
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
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
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23*/
24
25#ifndef __BLUETOOTH_H
26#define __BLUETOOTH_H
27
28#include <asm/types.h>
29#include <asm/byteorder.h>
30#include <linux/list.h>
31#include <linux/poll.h>
32#include <net/sock.h>
33
34#ifndef AF_BLUETOOTH
35#define AF_BLUETOOTH 31
36#define PF_BLUETOOTH AF_BLUETOOTH
37#endif
38
39/* Bluetooth versions */
40#define BLUETOOTH_VER_1_1 1
41#define BLUETOOTH_VER_1_2 2
42#define BLUETOOTH_VER_2_0 3
43
44/* Reserv for core and drivers use */
45#define BT_SKB_RESERVE 8
46
47#define BTPROTO_L2CAP 0
48#define BTPROTO_HCI 1
49#define BTPROTO_SCO 2
50#define BTPROTO_RFCOMM 3
51#define BTPROTO_BNEP 4
52#define BTPROTO_CMTP 5
53#define BTPROTO_HIDP 6
54#define BTPROTO_AVDTP 7
55
56#define SOL_HCI 0
57#define SOL_L2CAP 6
58#define SOL_SCO 17
59#define SOL_RFCOMM 18
60
61#define BT_SECURITY 4
62struct bt_security {
63 __u8 level;
64 __u8 key_size;
65};
66#define BT_SECURITY_SDP 0
67#define BT_SECURITY_LOW 1
68#define BT_SECURITY_MEDIUM 2
69#define BT_SECURITY_HIGH 3
70
71#define BT_DEFER_SETUP 7
72
73#define BT_FLUSHABLE 8
74
75#define BT_FLUSHABLE_OFF 0
76#define BT_FLUSHABLE_ON 1
77
78#define BT_POWER 9
79struct bt_power {
80 __u8 force_active;
81};
82#define BT_POWER_FORCE_ACTIVE_OFF 0
83#define BT_POWER_FORCE_ACTIVE_ON 1
84
85#define BT_CHANNEL_POLICY 10
86
87/* BR/EDR only (default policy)
88 * AMP controllers cannot be used.
89 * Channel move requests from the remote device are denied.
90 * If the L2CAP channel is currently using AMP, move the channel to BR/EDR.
91 */
92#define BT_CHANNEL_POLICY_BREDR_ONLY 0
93
94/* BR/EDR Preferred
95 * Allow use of AMP controllers.
96 * If the L2CAP channel is currently on AMP, move it to BR/EDR.
97 * Channel move requests from the remote device are allowed.
98 */
99#define BT_CHANNEL_POLICY_BREDR_PREFERRED 1
100
101/* AMP Preferred
102 * Allow use of AMP controllers
103 * If the L2CAP channel is currently on BR/EDR and AMP controller
104 * resources are available, initiate a channel move to AMP.
105 * Channel move requests from the remote device are allowed.
106 * If the L2CAP socket has not been connected yet, try to create
107 * and configure the channel directly on an AMP controller rather
108 * than BR/EDR.
109 */
110#define BT_CHANNEL_POLICY_AMP_PREFERRED 2
111
112__printf(2, 3)
113int bt_printk(const char *level, const char *fmt, ...);
114
115#define BT_INFO(fmt, arg...) bt_printk(KERN_INFO, pr_fmt(fmt), ##arg)
116#define BT_ERR(fmt, arg...) bt_printk(KERN_ERR, pr_fmt(fmt), ##arg)
117#define BT_DBG(fmt, arg...) pr_debug(fmt "\n", ##arg)
118
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
132/* BD Address */
133typedef struct {
134 __u8 b[6];
135} __packed bdaddr_t;
136
137#define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
138#define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff}})
139
140/* Copy, swap, convert BD Address */
141static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2)
142{
143 return memcmp(ba1, ba2, sizeof(bdaddr_t));
144}
145static inline void bacpy(bdaddr_t *dst, bdaddr_t *src)
146{
147 memcpy(dst, src, sizeof(bdaddr_t));
148}
149
150void baswap(bdaddr_t *dst, bdaddr_t *src);
151char *batostr(bdaddr_t *ba);
152bdaddr_t *strtoba(char *str);
153
154/* Common socket structures and functions */
155
156#define bt_sk(__sk) ((struct bt_sock *) __sk)
157
158struct bt_sock {
159 struct sock sk;
160 bdaddr_t src;
161 bdaddr_t dst;
162 struct list_head accept_q;
163 struct sock *parent;
164 u32 defer_setup;
165};
166
167struct bt_sock_list {
168 struct hlist_head head;
169 rwlock_t lock;
170};
171
172int bt_sock_register(int proto, const struct net_proto_family *ops);
173int bt_sock_unregister(int proto);
174void bt_sock_link(struct bt_sock_list *l, struct sock *s);
175void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
176int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
177 struct msghdr *msg, size_t len, int flags);
178int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
179 struct msghdr *msg, size_t len, int flags);
180uint bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait);
181int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
182int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
183
184void bt_accept_enqueue(struct sock *parent, struct sock *sk);
185void bt_accept_unlink(struct sock *sk);
186struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
187
188/* Skb helpers */
189struct bt_skb_cb {
190 __u8 pkt_type;
191 __u8 incoming;
192 __u16 expect;
193 __u16 tx_seq;
194 __u8 retries;
195 __u8 sar;
196 unsigned short channel;
197 __u8 force_active;
198};
199#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
200
201static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
202{
203 struct sk_buff *skb;
204
205 if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) {
206 skb_reserve(skb, BT_SKB_RESERVE);
207 bt_cb(skb)->incoming = 0;
208 }
209 return skb;
210}
211
212static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk,
213 unsigned long len, int nb, int *err)
214{
215 struct sk_buff *skb;
216
217 release_sock(sk);
218 if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) {
219 skb_reserve(skb, BT_SKB_RESERVE);
220 bt_cb(skb)->incoming = 0;
221 }
222 lock_sock(sk);
223
224 if (!skb && *err)
225 return NULL;
226
227 *err = sock_error(sk);
228 if (*err)
229 goto out;
230
231 if (sk->sk_shutdown) {
232 *err = -ECONNRESET;
233 goto out;
234 }
235
236 return skb;
237
238out:
239 kfree_skb(skb);
240 return NULL;
241}
242
243int bt_to_errno(__u16 code);
244
245extern int hci_sock_init(void);
246extern void hci_sock_cleanup(void);
247
248extern int bt_sysfs_init(void);
249extern void bt_sysfs_cleanup(void);
250
251extern struct dentry *bt_debugfs;
252
253int l2cap_init(void);
254void l2cap_exit(void);
255
256int sco_init(void);
257void sco_exit(void);
258
259void bt_sock_reclassify_lock(struct sock *sk, int proto);
260
261#endif /* __BLUETOOTH_H */