2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
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;
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.
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.
28 #include <linux/poll.h>
30 #include <linux/seq_file.h>
32 #define BT_SUBSYS_VERSION 2
33 #define BT_SUBSYS_REVISION 22
36 #define AF_BLUETOOTH 31
37 #define PF_BLUETOOTH AF_BLUETOOTH
40 /* Bluetooth versions */
41 #define BLUETOOTH_VER_1_1 1
42 #define BLUETOOTH_VER_1_2 2
43 #define BLUETOOTH_VER_2_0 3
45 /* Reserv for core and drivers use */
46 #define BT_SKB_RESERVE 8
48 #define BTPROTO_L2CAP 0
51 #define BTPROTO_RFCOMM 3
52 #define BTPROTO_BNEP 4
53 #define BTPROTO_CMTP 5
54 #define BTPROTO_HIDP 6
55 #define BTPROTO_AVDTP 7
67 #define BT_SECURITY_SDP 0
68 #define BT_SECURITY_LOW 1
69 #define BT_SECURITY_MEDIUM 2
70 #define BT_SECURITY_HIGH 3
71 #define BT_SECURITY_FIPS 4
73 #define BT_DEFER_SETUP 7
75 #define BT_FLUSHABLE 8
77 #define BT_FLUSHABLE_OFF 0
78 #define BT_FLUSHABLE_ON 1
84 #define BT_POWER_FORCE_ACTIVE_OFF 0
85 #define BT_POWER_FORCE_ACTIVE_ON 1
87 #define BT_CHANNEL_POLICY 10
89 /* BR/EDR only (default policy)
90 * AMP controllers cannot be used.
91 * Channel move requests from the remote device are denied.
92 * If the L2CAP channel is currently using AMP, move the channel to BR/EDR.
94 #define BT_CHANNEL_POLICY_BREDR_ONLY 0
97 * Allow use of AMP controllers.
98 * If the L2CAP channel is currently on AMP, move it to BR/EDR.
99 * Channel move requests from the remote device are allowed.
101 #define BT_CHANNEL_POLICY_BREDR_PREFERRED 1
104 * Allow use of AMP controllers
105 * If the L2CAP channel is currently on BR/EDR and AMP controller
106 * resources are available, initiate a channel move to AMP.
107 * Channel move requests from the remote device are allowed.
108 * If the L2CAP socket has not been connected yet, try to create
109 * and configure the channel directly on an AMP controller rather
112 #define BT_CHANNEL_POLICY_AMP_PREFERRED 2
119 #define BT_VOICE_TRANSPARENT 0x0003
120 #define BT_VOICE_CVSD_16BIT 0x0060
126 void bt_info(const char *fmt
, ...);
128 void bt_warn(const char *fmt
, ...);
130 void bt_err(const char *fmt
, ...);
132 void bt_err_ratelimited(const char *fmt
, ...);
134 #define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__)
135 #define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__)
136 #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__)
137 #define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__)
139 #define BT_ERR_RATELIMITED(fmt, ...) bt_err_ratelimited(fmt "\n", ##__VA_ARGS__)
141 #define bt_dev_info(hdev, fmt, ...) \
142 BT_INFO("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
143 #define bt_dev_warn(hdev, fmt, ...) \
144 BT_WARN("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
145 #define bt_dev_err(hdev, fmt, ...) \
146 BT_ERR("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
147 #define bt_dev_dbg(hdev, fmt, ...) \
148 BT_DBG("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
150 #define bt_dev_err_ratelimited(hdev, fmt, ...) \
151 BT_ERR_RATELIMITED("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
153 /* Connection and socket states */
155 BT_CONNECTED
= 1, /* Equal to TCP_ESTABLISHED to make net code happy */
166 /* If unused will be removed by compiler */
167 static inline const char *state_to_string(int state
)
171 return "BT_CONNECTED";
181 return "BT_CONNECT2";
190 return "invalid state";
198 /* BD Address type */
199 #define BDADDR_BREDR 0x00
200 #define BDADDR_LE_PUBLIC 0x01
201 #define BDADDR_LE_RANDOM 0x02
203 static inline bool bdaddr_type_is_valid(u8 type
)
207 case BDADDR_LE_PUBLIC
:
208 case BDADDR_LE_RANDOM
:
215 static inline bool bdaddr_type_is_le(u8 type
)
218 case BDADDR_LE_PUBLIC
:
219 case BDADDR_LE_RANDOM
:
226 #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
227 #define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}})
229 /* Copy, swap, convert BD Address */
230 static inline int bacmp(const bdaddr_t
*ba1
, const bdaddr_t
*ba2
)
232 return memcmp(ba1
, ba2
, sizeof(bdaddr_t
));
234 static inline void bacpy(bdaddr_t
*dst
, const bdaddr_t
*src
)
236 memcpy(dst
, src
, sizeof(bdaddr_t
));
239 void baswap(bdaddr_t
*dst
, const bdaddr_t
*src
);
241 /* Common socket structures and functions */
243 #define bt_sk(__sk) ((struct bt_sock *) __sk)
247 struct list_head accept_q
;
250 void (*skb_msg_name
)(struct sk_buff
*, void *, int *);
258 struct bt_sock_list
{
259 struct hlist_head head
;
261 #ifdef CONFIG_PROC_FS
262 int (* custom_seq_show
)(struct seq_file
*, void *);
266 int bt_sock_register(int proto
, const struct net_proto_family
*ops
);
267 void bt_sock_unregister(int proto
);
268 void bt_sock_link(struct bt_sock_list
*l
, struct sock
*s
);
269 void bt_sock_unlink(struct bt_sock_list
*l
, struct sock
*s
);
270 int bt_sock_recvmsg(struct socket
*sock
, struct msghdr
*msg
, size_t len
,
272 int bt_sock_stream_recvmsg(struct socket
*sock
, struct msghdr
*msg
,
273 size_t len
, int flags
);
274 uint
bt_sock_poll(struct file
*file
, struct socket
*sock
, poll_table
*wait
);
275 int bt_sock_ioctl(struct socket
*sock
, unsigned int cmd
, unsigned long arg
);
276 int bt_sock_wait_state(struct sock
*sk
, int state
, unsigned long timeo
);
277 int bt_sock_wait_ready(struct sock
*sk
, unsigned long flags
);
279 void bt_accept_enqueue(struct sock
*parent
, struct sock
*sk
);
280 void bt_accept_unlink(struct sock
*sk
);
281 struct sock
*bt_accept_dequeue(struct sock
*parent
, struct socket
*newsock
);
297 struct l2cap_chan
*chan
;
302 typedef void (*hci_req_complete_t
)(struct hci_dev
*hdev
, u8 status
, u16 opcode
);
303 typedef void (*hci_req_complete_skb_t
)(struct hci_dev
*hdev
, u8 status
,
304 u16 opcode
, struct sk_buff
*skb
);
306 #define HCI_REQ_START BIT(0)
307 #define HCI_REQ_SKB BIT(1)
314 hci_req_complete_t req_complete
;
315 hci_req_complete_skb_t req_complete_skb
;
325 struct l2cap_ctrl l2cap
;
329 #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
331 #define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type
332 #define hci_skb_expect(skb) bt_cb((skb))->expect
333 #define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode
335 static inline struct sk_buff
*bt_skb_alloc(unsigned int len
, gfp_t how
)
339 skb
= alloc_skb(len
+ BT_SKB_RESERVE
, how
);
341 skb_reserve(skb
, BT_SKB_RESERVE
);
345 static inline struct sk_buff
*bt_skb_send_alloc(struct sock
*sk
,
346 unsigned long len
, int nb
, int *err
)
350 skb
= sock_alloc_send_skb(sk
, len
+ BT_SKB_RESERVE
, nb
, err
);
352 skb_reserve(skb
, BT_SKB_RESERVE
);
357 *err
= sock_error(sk
);
361 if (sk
->sk_shutdown
) {
373 int bt_to_errno(u16 code
);
375 void hci_sock_set_flag(struct sock
*sk
, int nr
);
376 void hci_sock_clear_flag(struct sock
*sk
, int nr
);
377 int hci_sock_test_flag(struct sock
*sk
, int nr
);
378 unsigned short hci_sock_get_channel(struct sock
*sk
);
379 u32
hci_sock_get_cookie(struct sock
*sk
);
381 int hci_sock_init(void);
382 void hci_sock_cleanup(void);
384 int bt_sysfs_init(void);
385 void bt_sysfs_cleanup(void);
387 int bt_procfs_init(struct net
*net
, const char *name
,
388 struct bt_sock_list
*sk_list
,
389 int (*seq_show
)(struct seq_file
*, void *));
390 void bt_procfs_cleanup(struct net
*net
, const char *name
);
392 extern struct dentry
*bt_debugfs
;
394 int l2cap_init(void);
395 void l2cap_exit(void);
397 #if IS_ENABLED(CONFIG_BT_BREDR)
401 static inline int sco_init(void)
406 static inline void sco_exit(void)
412 void mgmt_exit(void);
414 void bt_sock_reclassify_lock(struct sock
*sk
, int proto
);
416 #endif /* __BLUETOOTH_H */