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
44 #define BLUETOOTH_VER_2_1 4
45 #define BLUETOOTH_VER_4_0 6
47 /* Reserv for core and drivers use */
48 #define BT_SKB_RESERVE 8
50 #define BTPROTO_L2CAP 0
53 #define BTPROTO_RFCOMM 3
54 #define BTPROTO_BNEP 4
55 #define BTPROTO_CMTP 5
56 #define BTPROTO_HIDP 6
57 #define BTPROTO_AVDTP 7
69 #define BT_SECURITY_SDP 0
70 #define BT_SECURITY_LOW 1
71 #define BT_SECURITY_MEDIUM 2
72 #define BT_SECURITY_HIGH 3
73 #define BT_SECURITY_FIPS 4
75 #define BT_DEFER_SETUP 7
77 #define BT_FLUSHABLE 8
79 #define BT_FLUSHABLE_OFF 0
80 #define BT_FLUSHABLE_ON 1
86 #define BT_POWER_FORCE_ACTIVE_OFF 0
87 #define BT_POWER_FORCE_ACTIVE_ON 1
89 #define BT_CHANNEL_POLICY 10
91 /* BR/EDR only (default policy)
92 * AMP controllers cannot be used.
93 * Channel move requests from the remote device are denied.
94 * If the L2CAP channel is currently using AMP, move the channel to BR/EDR.
96 #define BT_CHANNEL_POLICY_BREDR_ONLY 0
99 * Allow use of AMP controllers.
100 * If the L2CAP channel is currently on AMP, move it to BR/EDR.
101 * Channel move requests from the remote device are allowed.
103 #define BT_CHANNEL_POLICY_BREDR_PREFERRED 1
106 * Allow use of AMP controllers
107 * If the L2CAP channel is currently on BR/EDR and AMP controller
108 * resources are available, initiate a channel move to AMP.
109 * Channel move requests from the remote device are allowed.
110 * If the L2CAP socket has not been connected yet, try to create
111 * and configure the channel directly on an AMP controller rather
114 #define BT_CHANNEL_POLICY_AMP_PREFERRED 2
121 #define BT_VOICE_TRANSPARENT 0x0003
122 #define BT_VOICE_CVSD_16BIT 0x0060
128 #define BT_PHY_BR_1M_1SLOT 0x00000001
129 #define BT_PHY_BR_1M_3SLOT 0x00000002
130 #define BT_PHY_BR_1M_5SLOT 0x00000004
131 #define BT_PHY_EDR_2M_1SLOT 0x00000008
132 #define BT_PHY_EDR_2M_3SLOT 0x00000010
133 #define BT_PHY_EDR_2M_5SLOT 0x00000020
134 #define BT_PHY_EDR_3M_1SLOT 0x00000040
135 #define BT_PHY_EDR_3M_3SLOT 0x00000080
136 #define BT_PHY_EDR_3M_5SLOT 0x00000100
137 #define BT_PHY_LE_1M_TX 0x00000200
138 #define BT_PHY_LE_1M_RX 0x00000400
139 #define BT_PHY_LE_2M_TX 0x00000800
140 #define BT_PHY_LE_2M_RX 0x00001000
141 #define BT_PHY_LE_CODED_TX 0x00002000
142 #define BT_PHY_LE_CODED_RX 0x00004000
146 #define BT_MODE_BASIC 0x00
147 #define BT_MODE_ERTM 0x01
148 #define BT_MODE_STREAMING 0x02
149 #define BT_MODE_LE_FLOWCTL 0x03
150 #define BT_MODE_EXT_FLOWCTL 0x04
152 #define BT_PKT_STATUS 16
154 #define BT_SCM_PKT_STATUS 0x03
157 void bt_info(const char *fmt, ...);
159 void bt_warn(const char *fmt, ...);
161 void bt_err(const char *fmt, ...);
162 #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG)
163 void bt_dbg_set(bool enable);
164 bool bt_dbg_get(void);
166 void bt_dbg(const char *fmt, ...);
169 void bt_warn_ratelimited(const char *fmt, ...);
171 void bt_err_ratelimited(const char *fmt, ...);
173 #define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__)
174 #define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__)
175 #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__)
177 #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG)
178 #define BT_DBG(fmt, ...) bt_dbg(fmt "\n", ##__VA_ARGS__)
180 #define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__)
183 #define bt_dev_info(hdev, fmt, ...) \
184 BT_INFO("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
185 #define bt_dev_warn(hdev, fmt, ...) \
186 BT_WARN("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
187 #define bt_dev_err(hdev, fmt, ...) \
188 BT_ERR("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
189 #define bt_dev_dbg(hdev, fmt, ...) \
190 BT_DBG("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
192 #define bt_dev_warn_ratelimited(hdev, fmt, ...) \
193 bt_warn_ratelimited("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
194 #define bt_dev_err_ratelimited(hdev, fmt, ...) \
195 bt_err_ratelimited("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
197 /* Connection and socket states */
199 BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
210 /* If unused will be removed by compiler */
211 static inline const char *state_to_string(int state)
215 return "BT_CONNECTED";
225 return "BT_CONNECT2";
234 return "invalid state";
242 /* BD Address type */
243 #define BDADDR_BREDR 0x00
244 #define BDADDR_LE_PUBLIC 0x01
245 #define BDADDR_LE_RANDOM 0x02
247 static inline bool bdaddr_type_is_valid(u8 type)
251 case BDADDR_LE_PUBLIC:
252 case BDADDR_LE_RANDOM:
259 static inline bool bdaddr_type_is_le(u8 type)
262 case BDADDR_LE_PUBLIC:
263 case BDADDR_LE_RANDOM:
270 #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
271 #define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}})
273 /* Copy, swap, convert BD Address */
274 static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2)
276 return memcmp(ba1, ba2, sizeof(bdaddr_t));
278 static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src)
280 memcpy(dst, src, sizeof(bdaddr_t));
283 void baswap(bdaddr_t *dst, const bdaddr_t *src);
285 /* Common socket structures and functions */
287 #define bt_sk(__sk) ((struct bt_sock *) __sk)
291 struct list_head accept_q;
294 void (*skb_msg_name)(struct sk_buff *, void *, int *);
295 void (*skb_put_cmsg)(struct sk_buff *, struct msghdr *, struct sock *);
303 struct bt_sock_list {
304 struct hlist_head head;
306 #ifdef CONFIG_PROC_FS
307 int (* custom_seq_show)(struct seq_file *, void *);
311 int bt_sock_register(int proto, const struct net_proto_family *ops);
312 void bt_sock_unregister(int proto);
313 void bt_sock_link(struct bt_sock_list *l, struct sock *s);
314 void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
315 int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
317 int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg,
318 size_t len, int flags);
319 __poll_t bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait);
320 int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
321 int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
322 int bt_sock_wait_ready(struct sock *sk, unsigned long flags);
324 void bt_accept_enqueue(struct sock *parent, struct sock *sk, bool bh);
325 void bt_accept_unlink(struct sock *sk);
326 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
342 struct l2cap_chan *chan;
351 typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode);
352 typedef void (*hci_req_complete_skb_t)(struct hci_dev *hdev, u8 status,
353 u16 opcode, struct sk_buff *skb);
355 #define HCI_REQ_START BIT(0)
356 #define HCI_REQ_SKB BIT(1)
363 hci_req_complete_t req_complete;
364 hci_req_complete_skb_t req_complete_skb;
374 struct l2cap_ctrl l2cap;
379 #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
381 #define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type
382 #define hci_skb_expect(skb) bt_cb((skb))->expect
383 #define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode
385 static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
389 skb = alloc_skb(len + BT_SKB_RESERVE, how);
391 skb_reserve(skb, BT_SKB_RESERVE);
395 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk,
396 unsigned long len, int nb, int *err)
400 skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
402 skb_reserve(skb, BT_SKB_RESERVE);
407 *err = sock_error(sk);
411 if (sk->sk_shutdown) {
423 int bt_to_errno(u16 code);
425 void hci_sock_set_flag(struct sock *sk, int nr);
426 void hci_sock_clear_flag(struct sock *sk, int nr);
427 int hci_sock_test_flag(struct sock *sk, int nr);
428 unsigned short hci_sock_get_channel(struct sock *sk);
429 u32 hci_sock_get_cookie(struct sock *sk);
431 int hci_sock_init(void);
432 void hci_sock_cleanup(void);
434 int bt_sysfs_init(void);
435 void bt_sysfs_cleanup(void);
437 int bt_procfs_init(struct net *net, const char *name,
438 struct bt_sock_list *sk_list,
439 int (*seq_show)(struct seq_file *, void *));
440 void bt_procfs_cleanup(struct net *net, const char *name);
442 extern struct dentry *bt_debugfs;
444 int l2cap_init(void);
445 void l2cap_exit(void);
447 #if IS_ENABLED(CONFIG_BT_BREDR)
451 static inline int sco_init(void)
456 static inline void sco_exit(void)
462 void mgmt_exit(void);
464 void bt_sock_reclassify_lock(struct sock *sk, int proto);
466 #endif /* __BLUETOOTH_H */