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 #define BT_PHY_BR_1M_1SLOT 0x00000001
127 #define BT_PHY_BR_1M_3SLOT 0x00000002
128 #define BT_PHY_BR_1M_5SLOT 0x00000004
129 #define BT_PHY_EDR_2M_1SLOT 0x00000008
130 #define BT_PHY_EDR_2M_3SLOT 0x00000010
131 #define BT_PHY_EDR_2M_5SLOT 0x00000020
132 #define BT_PHY_EDR_3M_1SLOT 0x00000040
133 #define BT_PHY_EDR_3M_3SLOT 0x00000080
134 #define BT_PHY_EDR_3M_5SLOT 0x00000100
135 #define BT_PHY_LE_1M_TX 0x00000200
136 #define BT_PHY_LE_1M_RX 0x00000400
137 #define BT_PHY_LE_2M_TX 0x00000800
138 #define BT_PHY_LE_2M_RX 0x00001000
139 #define BT_PHY_LE_CODED_TX 0x00002000
140 #define BT_PHY_LE_CODED_RX 0x00004000
144 #define BT_MODE_BASIC 0x00
145 #define BT_MODE_ERTM 0x01
146 #define BT_MODE_STREAMING 0x02
147 #define BT_MODE_LE_FLOWCTL 0x03
148 #define BT_MODE_EXT_FLOWCTL 0x04
151 void bt_info(const char *fmt, ...);
153 void bt_warn(const char *fmt, ...);
155 void bt_err(const char *fmt, ...);
157 void bt_warn_ratelimited(const char *fmt, ...);
159 void bt_err_ratelimited(const char *fmt, ...);
161 #define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__)
162 #define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__)
163 #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__)
164 #define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__)
166 #define bt_dev_info(hdev, fmt, ...) \
167 BT_INFO("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
168 #define bt_dev_warn(hdev, fmt, ...) \
169 BT_WARN("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
170 #define bt_dev_err(hdev, fmt, ...) \
171 BT_ERR("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
172 #define bt_dev_dbg(hdev, fmt, ...) \
173 BT_DBG("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
175 #define bt_dev_warn_ratelimited(hdev, fmt, ...) \
176 bt_warn_ratelimited("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
177 #define bt_dev_err_ratelimited(hdev, fmt, ...) \
178 bt_err_ratelimited("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
180 /* Connection and socket states */
182 BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
193 /* If unused will be removed by compiler */
194 static inline const char *state_to_string(int state)
198 return "BT_CONNECTED";
208 return "BT_CONNECT2";
217 return "invalid state";
225 /* BD Address type */
226 #define BDADDR_BREDR 0x00
227 #define BDADDR_LE_PUBLIC 0x01
228 #define BDADDR_LE_RANDOM 0x02
230 static inline bool bdaddr_type_is_valid(u8 type)
234 case BDADDR_LE_PUBLIC:
235 case BDADDR_LE_RANDOM:
242 static inline bool bdaddr_type_is_le(u8 type)
245 case BDADDR_LE_PUBLIC:
246 case BDADDR_LE_RANDOM:
253 #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
254 #define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}})
256 /* Copy, swap, convert BD Address */
257 static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2)
259 return memcmp(ba1, ba2, sizeof(bdaddr_t));
261 static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src)
263 memcpy(dst, src, sizeof(bdaddr_t));
266 void baswap(bdaddr_t *dst, const bdaddr_t *src);
268 /* Common socket structures and functions */
270 #define bt_sk(__sk) ((struct bt_sock *) __sk)
274 struct list_head accept_q;
277 void (*skb_msg_name)(struct sk_buff *, void *, int *);
285 struct bt_sock_list {
286 struct hlist_head head;
288 #ifdef CONFIG_PROC_FS
289 int (* custom_seq_show)(struct seq_file *, void *);
293 int bt_sock_register(int proto, const struct net_proto_family *ops);
294 void bt_sock_unregister(int proto);
295 void bt_sock_link(struct bt_sock_list *l, struct sock *s);
296 void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
297 int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
299 int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg,
300 size_t len, int flags);
301 __poll_t bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait);
302 int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
303 int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
304 int bt_sock_wait_ready(struct sock *sk, unsigned long flags);
306 void bt_accept_enqueue(struct sock *parent, struct sock *sk, bool bh);
307 void bt_accept_unlink(struct sock *sk);
308 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
324 struct l2cap_chan *chan;
329 typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode);
330 typedef void (*hci_req_complete_skb_t)(struct hci_dev *hdev, u8 status,
331 u16 opcode, struct sk_buff *skb);
333 #define HCI_REQ_START BIT(0)
334 #define HCI_REQ_SKB BIT(1)
341 hci_req_complete_t req_complete;
342 hci_req_complete_skb_t req_complete_skb;
352 struct l2cap_ctrl l2cap;
356 #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
358 #define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type
359 #define hci_skb_expect(skb) bt_cb((skb))->expect
360 #define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode
362 static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
366 skb = alloc_skb(len + BT_SKB_RESERVE, how);
368 skb_reserve(skb, BT_SKB_RESERVE);
372 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk,
373 unsigned long len, int nb, int *err)
377 skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
379 skb_reserve(skb, BT_SKB_RESERVE);
384 *err = sock_error(sk);
388 if (sk->sk_shutdown) {
400 int bt_to_errno(u16 code);
402 void hci_sock_set_flag(struct sock *sk, int nr);
403 void hci_sock_clear_flag(struct sock *sk, int nr);
404 int hci_sock_test_flag(struct sock *sk, int nr);
405 unsigned short hci_sock_get_channel(struct sock *sk);
406 u32 hci_sock_get_cookie(struct sock *sk);
408 int hci_sock_init(void);
409 void hci_sock_cleanup(void);
411 int bt_sysfs_init(void);
412 void bt_sysfs_cleanup(void);
414 int bt_procfs_init(struct net *net, const char *name,
415 struct bt_sock_list *sk_list,
416 int (*seq_show)(struct seq_file *, void *));
417 void bt_procfs_cleanup(struct net *net, const char *name);
419 extern struct dentry *bt_debugfs;
421 int l2cap_init(void);
422 void l2cap_exit(void);
424 #if IS_ENABLED(CONFIG_BT_BREDR)
428 static inline int sco_init(void)
433 static inline void sco_exit(void)
439 void mgmt_exit(void);
441 void bt_sock_reclassify_lock(struct sock *sk, int proto);
443 #endif /* __BLUETOOTH_H */