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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 <linux/poll.h>
29#include <net/sock.h>
30#include <linux/seq_file.h>
31
32#define BT_SUBSYS_VERSION 2
33#define BT_SUBSYS_REVISION 22
34
35#ifndef AF_BLUETOOTH
36#define AF_BLUETOOTH 31
37#define PF_BLUETOOTH AF_BLUETOOTH
38#endif
39
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
45/* Reserv for core and drivers use */
46#define BT_SKB_RESERVE 8
47
48#define BTPROTO_L2CAP 0
49#define BTPROTO_HCI 1
50#define BTPROTO_SCO 2
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
56
57#define SOL_HCI 0
58#define SOL_L2CAP 6
59#define SOL_SCO 17
60#define SOL_RFCOMM 18
61
62#define BT_SECURITY 4
63struct bt_security {
64 __u8 level;
65 __u8 key_size;
66};
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
72
73#define BT_DEFER_SETUP 7
74
75#define BT_FLUSHABLE 8
76
77#define BT_FLUSHABLE_OFF 0
78#define BT_FLUSHABLE_ON 1
79
80#define BT_POWER 9
81struct bt_power {
82 __u8 force_active;
83};
84#define BT_POWER_FORCE_ACTIVE_OFF 0
85#define BT_POWER_FORCE_ACTIVE_ON 1
86
87#define BT_CHANNEL_POLICY 10
88
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.
93 */
94#define BT_CHANNEL_POLICY_BREDR_ONLY 0
95
96/* BR/EDR Preferred
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.
100 */
101#define BT_CHANNEL_POLICY_BREDR_PREFERRED 1
102
103/* AMP Preferred
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
110 * than BR/EDR.
111 */
112#define BT_CHANNEL_POLICY_AMP_PREFERRED 2
113
114#define BT_VOICE 11
115struct bt_voice {
116 __u16 setting;
117};
118
119#define BT_VOICE_TRANSPARENT 0x0003
120#define BT_VOICE_CVSD_16BIT 0x0060
121
122#define BT_SNDMTU 12
123#define BT_RCVMTU 13
124
125__printf(1, 2)
126void bt_info(const char *fmt, ...);
127__printf(1, 2)
128void bt_warn(const char *fmt, ...);
129__printf(1, 2)
130void bt_err(const char *fmt, ...);
131__printf(1, 2)
132void bt_err_ratelimited(const char *fmt, ...);
133
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__)
138
139#define BT_ERR_RATELIMITED(fmt, ...) bt_err_ratelimited(fmt "\n", ##__VA_ARGS__)
140
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__)
149
150#define bt_dev_err_ratelimited(hdev, fmt, ...) \
151 BT_ERR_RATELIMITED("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
152
153/* Connection and socket states */
154enum {
155 BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
156 BT_OPEN,
157 BT_BOUND,
158 BT_LISTEN,
159 BT_CONNECT,
160 BT_CONNECT2,
161 BT_CONFIG,
162 BT_DISCONN,
163 BT_CLOSED
164};
165
166/* If unused will be removed by compiler */
167static inline const char *state_to_string(int state)
168{
169 switch (state) {
170 case BT_CONNECTED:
171 return "BT_CONNECTED";
172 case BT_OPEN:
173 return "BT_OPEN";
174 case BT_BOUND:
175 return "BT_BOUND";
176 case BT_LISTEN:
177 return "BT_LISTEN";
178 case BT_CONNECT:
179 return "BT_CONNECT";
180 case BT_CONNECT2:
181 return "BT_CONNECT2";
182 case BT_CONFIG:
183 return "BT_CONFIG";
184 case BT_DISCONN:
185 return "BT_DISCONN";
186 case BT_CLOSED:
187 return "BT_CLOSED";
188 }
189
190 return "invalid state";
191}
192
193/* BD Address */
194typedef struct {
195 __u8 b[6];
196} __packed bdaddr_t;
197
198/* BD Address type */
199#define BDADDR_BREDR 0x00
200#define BDADDR_LE_PUBLIC 0x01
201#define BDADDR_LE_RANDOM 0x02
202
203static inline bool bdaddr_type_is_valid(u8 type)
204{
205 switch (type) {
206 case BDADDR_BREDR:
207 case BDADDR_LE_PUBLIC:
208 case BDADDR_LE_RANDOM:
209 return true;
210 }
211
212 return false;
213}
214
215static inline bool bdaddr_type_is_le(u8 type)
216{
217 switch (type) {
218 case BDADDR_LE_PUBLIC:
219 case BDADDR_LE_RANDOM:
220 return true;
221 }
222
223 return false;
224}
225
226#define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
227#define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}})
228
229/* Copy, swap, convert BD Address */
230static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2)
231{
232 return memcmp(ba1, ba2, sizeof(bdaddr_t));
233}
234static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src)
235{
236 memcpy(dst, src, sizeof(bdaddr_t));
237}
238
239void baswap(bdaddr_t *dst, const bdaddr_t *src);
240
241/* Common socket structures and functions */
242
243#define bt_sk(__sk) ((struct bt_sock *) __sk)
244
245struct bt_sock {
246 struct sock sk;
247 struct list_head accept_q;
248 struct sock *parent;
249 unsigned long flags;
250 void (*skb_msg_name)(struct sk_buff *, void *, int *);
251};
252
253enum {
254 BT_SK_DEFER_SETUP,
255 BT_SK_SUSPEND,
256};
257
258struct bt_sock_list {
259 struct hlist_head head;
260 rwlock_t lock;
261#ifdef CONFIG_PROC_FS
262 int (* custom_seq_show)(struct seq_file *, void *);
263#endif
264};
265
266int bt_sock_register(int proto, const struct net_proto_family *ops);
267void bt_sock_unregister(int proto);
268void bt_sock_link(struct bt_sock_list *l, struct sock *s);
269void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
270int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
271 int flags);
272int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg,
273 size_t len, int flags);
274__poll_t bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait);
275int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
276int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
277int bt_sock_wait_ready(struct sock *sk, unsigned long flags);
278
279void bt_accept_enqueue(struct sock *parent, struct sock *sk, bool bh);
280void bt_accept_unlink(struct sock *sk);
281struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
282
283/* Skb helpers */
284struct l2cap_ctrl {
285 u8 sframe:1,
286 poll:1,
287 final:1,
288 fcs:1,
289 sar:2,
290 super:2;
291
292 u16 reqseq;
293 u16 txseq;
294 u8 retries;
295 __le16 psm;
296 bdaddr_t bdaddr;
297 struct l2cap_chan *chan;
298};
299
300struct hci_dev;
301
302typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode);
303typedef void (*hci_req_complete_skb_t)(struct hci_dev *hdev, u8 status,
304 u16 opcode, struct sk_buff *skb);
305
306#define HCI_REQ_START BIT(0)
307#define HCI_REQ_SKB BIT(1)
308
309struct hci_ctrl {
310 u16 opcode;
311 u8 req_flags;
312 u8 req_event;
313 union {
314 hci_req_complete_t req_complete;
315 hci_req_complete_skb_t req_complete_skb;
316 };
317};
318
319struct bt_skb_cb {
320 u8 pkt_type;
321 u8 force_active;
322 u16 expect;
323 u8 incoming:1;
324 union {
325 struct l2cap_ctrl l2cap;
326 struct hci_ctrl hci;
327 };
328};
329#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
330
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
334
335static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
336{
337 struct sk_buff *skb;
338
339 skb = alloc_skb(len + BT_SKB_RESERVE, how);
340 if (skb)
341 skb_reserve(skb, BT_SKB_RESERVE);
342 return skb;
343}
344
345static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk,
346 unsigned long len, int nb, int *err)
347{
348 struct sk_buff *skb;
349
350 skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
351 if (skb)
352 skb_reserve(skb, BT_SKB_RESERVE);
353
354 if (!skb && *err)
355 return NULL;
356
357 *err = sock_error(sk);
358 if (*err)
359 goto out;
360
361 if (sk->sk_shutdown) {
362 *err = -ECONNRESET;
363 goto out;
364 }
365
366 return skb;
367
368out:
369 kfree_skb(skb);
370 return NULL;
371}
372
373int bt_to_errno(u16 code);
374
375void hci_sock_set_flag(struct sock *sk, int nr);
376void hci_sock_clear_flag(struct sock *sk, int nr);
377int hci_sock_test_flag(struct sock *sk, int nr);
378unsigned short hci_sock_get_channel(struct sock *sk);
379u32 hci_sock_get_cookie(struct sock *sk);
380
381int hci_sock_init(void);
382void hci_sock_cleanup(void);
383
384int bt_sysfs_init(void);
385void bt_sysfs_cleanup(void);
386
387int bt_procfs_init(struct net *net, const char *name,
388 struct bt_sock_list *sk_list,
389 int (*seq_show)(struct seq_file *, void *));
390void bt_procfs_cleanup(struct net *net, const char *name);
391
392extern struct dentry *bt_debugfs;
393
394int l2cap_init(void);
395void l2cap_exit(void);
396
397#if IS_ENABLED(CONFIG_BT_BREDR)
398int sco_init(void);
399void sco_exit(void);
400#else
401static inline int sco_init(void)
402{
403 return 0;
404}
405
406static inline void sco_exit(void)
407{
408}
409#endif
410
411int mgmt_init(void);
412void mgmt_exit(void);
413
414void bt_sock_reclassify_lock(struct sock *sk, int proto);
415
416#endif /* __BLUETOOTH_H */
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 <linux/poll.h>
29#include <net/sock.h>
30#include <linux/seq_file.h>
31
32#define BT_SUBSYS_VERSION "2.21"
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#define BT_SECURITY_FIPS 4
71
72#define BT_DEFER_SETUP 7
73
74#define BT_FLUSHABLE 8
75
76#define BT_FLUSHABLE_OFF 0
77#define BT_FLUSHABLE_ON 1
78
79#define BT_POWER 9
80struct bt_power {
81 __u8 force_active;
82};
83#define BT_POWER_FORCE_ACTIVE_OFF 0
84#define BT_POWER_FORCE_ACTIVE_ON 1
85
86#define BT_CHANNEL_POLICY 10
87
88/* BR/EDR only (default policy)
89 * AMP controllers cannot be used.
90 * Channel move requests from the remote device are denied.
91 * If the L2CAP channel is currently using AMP, move the channel to BR/EDR.
92 */
93#define BT_CHANNEL_POLICY_BREDR_ONLY 0
94
95/* BR/EDR Preferred
96 * Allow use of AMP controllers.
97 * If the L2CAP channel is currently on AMP, move it to BR/EDR.
98 * Channel move requests from the remote device are allowed.
99 */
100#define BT_CHANNEL_POLICY_BREDR_PREFERRED 1
101
102/* AMP Preferred
103 * Allow use of AMP controllers
104 * If the L2CAP channel is currently on BR/EDR and AMP controller
105 * resources are available, initiate a channel move to AMP.
106 * Channel move requests from the remote device are allowed.
107 * If the L2CAP socket has not been connected yet, try to create
108 * and configure the channel directly on an AMP controller rather
109 * than BR/EDR.
110 */
111#define BT_CHANNEL_POLICY_AMP_PREFERRED 2
112
113#define BT_VOICE 11
114struct bt_voice {
115 __u16 setting;
116};
117
118#define BT_VOICE_TRANSPARENT 0x0003
119#define BT_VOICE_CVSD_16BIT 0x0060
120
121#define BT_SNDMTU 12
122#define BT_RCVMTU 13
123
124__printf(1, 2)
125void bt_info(const char *fmt, ...);
126__printf(1, 2)
127void bt_warn(const char *fmt, ...);
128__printf(1, 2)
129void bt_err(const char *fmt, ...);
130__printf(1, 2)
131void bt_err_ratelimited(const char *fmt, ...);
132
133#define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__)
134#define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__)
135#define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__)
136#define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__)
137
138#define BT_ERR_RATELIMITED(fmt, ...) bt_err_ratelimited(fmt "\n", ##__VA_ARGS__)
139
140#define bt_dev_info(hdev, fmt, ...) \
141 BT_INFO("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
142#define bt_dev_warn(hdev, fmt, ...) \
143 BT_WARN("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
144#define bt_dev_err(hdev, fmt, ...) \
145 BT_ERR("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
146#define bt_dev_dbg(hdev, fmt, ...) \
147 BT_DBG("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
148
149/* Connection and socket states */
150enum {
151 BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
152 BT_OPEN,
153 BT_BOUND,
154 BT_LISTEN,
155 BT_CONNECT,
156 BT_CONNECT2,
157 BT_CONFIG,
158 BT_DISCONN,
159 BT_CLOSED
160};
161
162/* If unused will be removed by compiler */
163static inline const char *state_to_string(int state)
164{
165 switch (state) {
166 case BT_CONNECTED:
167 return "BT_CONNECTED";
168 case BT_OPEN:
169 return "BT_OPEN";
170 case BT_BOUND:
171 return "BT_BOUND";
172 case BT_LISTEN:
173 return "BT_LISTEN";
174 case BT_CONNECT:
175 return "BT_CONNECT";
176 case BT_CONNECT2:
177 return "BT_CONNECT2";
178 case BT_CONFIG:
179 return "BT_CONFIG";
180 case BT_DISCONN:
181 return "BT_DISCONN";
182 case BT_CLOSED:
183 return "BT_CLOSED";
184 }
185
186 return "invalid state";
187}
188
189/* BD Address */
190typedef struct {
191 __u8 b[6];
192} __packed bdaddr_t;
193
194/* BD Address type */
195#define BDADDR_BREDR 0x00
196#define BDADDR_LE_PUBLIC 0x01
197#define BDADDR_LE_RANDOM 0x02
198
199static inline bool bdaddr_type_is_valid(__u8 type)
200{
201 switch (type) {
202 case BDADDR_BREDR:
203 case BDADDR_LE_PUBLIC:
204 case BDADDR_LE_RANDOM:
205 return true;
206 }
207
208 return false;
209}
210
211static inline bool bdaddr_type_is_le(__u8 type)
212{
213 switch (type) {
214 case BDADDR_LE_PUBLIC:
215 case BDADDR_LE_RANDOM:
216 return true;
217 }
218
219 return false;
220}
221
222#define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
223#define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}})
224
225/* Copy, swap, convert BD Address */
226static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2)
227{
228 return memcmp(ba1, ba2, sizeof(bdaddr_t));
229}
230static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src)
231{
232 memcpy(dst, src, sizeof(bdaddr_t));
233}
234
235void baswap(bdaddr_t *dst, bdaddr_t *src);
236
237/* Common socket structures and functions */
238
239#define bt_sk(__sk) ((struct bt_sock *) __sk)
240
241struct bt_sock {
242 struct sock sk;
243 struct list_head accept_q;
244 struct sock *parent;
245 unsigned long flags;
246 void (*skb_msg_name)(struct sk_buff *, void *, int *);
247};
248
249enum {
250 BT_SK_DEFER_SETUP,
251 BT_SK_SUSPEND,
252};
253
254struct bt_sock_list {
255 struct hlist_head head;
256 rwlock_t lock;
257#ifdef CONFIG_PROC_FS
258 int (* custom_seq_show)(struct seq_file *, void *);
259#endif
260};
261
262int bt_sock_register(int proto, const struct net_proto_family *ops);
263void bt_sock_unregister(int proto);
264void bt_sock_link(struct bt_sock_list *l, struct sock *s);
265void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
266int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
267 int flags);
268int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg,
269 size_t len, int flags);
270uint bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait);
271int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
272int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
273int bt_sock_wait_ready(struct sock *sk, unsigned long flags);
274
275void bt_accept_enqueue(struct sock *parent, struct sock *sk);
276void bt_accept_unlink(struct sock *sk);
277struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
278
279/* Skb helpers */
280struct l2cap_ctrl {
281 __u8 sframe:1,
282 poll:1,
283 final:1,
284 fcs:1,
285 sar:2,
286 super:2;
287 __u16 reqseq;
288 __u16 txseq;
289 __u8 retries;
290 __le16 psm;
291 bdaddr_t bdaddr;
292 struct l2cap_chan *chan;
293};
294
295struct hci_dev;
296
297typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode);
298typedef void (*hci_req_complete_skb_t)(struct hci_dev *hdev, u8 status,
299 u16 opcode, struct sk_buff *skb);
300
301#define HCI_REQ_START BIT(0)
302#define HCI_REQ_SKB BIT(1)
303
304struct hci_ctrl {
305 __u16 opcode;
306 u8 req_flags;
307 u8 req_event;
308 union {
309 hci_req_complete_t req_complete;
310 hci_req_complete_skb_t req_complete_skb;
311 };
312};
313
314struct bt_skb_cb {
315 __u8 pkt_type;
316 __u8 force_active;
317 __u16 expect;
318 __u8 incoming:1;
319 union {
320 struct l2cap_ctrl l2cap;
321 struct hci_ctrl hci;
322 };
323};
324#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
325
326#define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type
327#define hci_skb_expect(skb) bt_cb((skb))->expect
328#define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode
329
330static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
331{
332 struct sk_buff *skb;
333
334 skb = alloc_skb(len + BT_SKB_RESERVE, how);
335 if (skb)
336 skb_reserve(skb, BT_SKB_RESERVE);
337 return skb;
338}
339
340static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk,
341 unsigned long len, int nb, int *err)
342{
343 struct sk_buff *skb;
344
345 skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
346 if (skb)
347 skb_reserve(skb, BT_SKB_RESERVE);
348
349 if (!skb && *err)
350 return NULL;
351
352 *err = sock_error(sk);
353 if (*err)
354 goto out;
355
356 if (sk->sk_shutdown) {
357 *err = -ECONNRESET;
358 goto out;
359 }
360
361 return skb;
362
363out:
364 kfree_skb(skb);
365 return NULL;
366}
367
368int bt_to_errno(__u16 code);
369
370void hci_sock_set_flag(struct sock *sk, int nr);
371void hci_sock_clear_flag(struct sock *sk, int nr);
372int hci_sock_test_flag(struct sock *sk, int nr);
373unsigned short hci_sock_get_channel(struct sock *sk);
374
375int hci_sock_init(void);
376void hci_sock_cleanup(void);
377
378int bt_sysfs_init(void);
379void bt_sysfs_cleanup(void);
380
381int bt_procfs_init(struct net *net, const char *name,
382 struct bt_sock_list *sk_list,
383 int (*seq_show)(struct seq_file *, void *));
384void bt_procfs_cleanup(struct net *net, const char *name);
385
386extern struct dentry *bt_debugfs;
387
388int l2cap_init(void);
389void l2cap_exit(void);
390
391#if IS_ENABLED(CONFIG_BT_BREDR)
392int sco_init(void);
393void sco_exit(void);
394#else
395static inline int sco_init(void)
396{
397 return 0;
398}
399
400static inline void sco_exit(void)
401{
402}
403#endif
404
405int mgmt_init(void);
406void mgmt_exit(void);
407
408void bt_sock_reclassify_lock(struct sock *sk, int proto);
409
410#endif /* __BLUETOOTH_H */