1 | /* |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated |
4 | Copyright 2023 NXP |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> |
7 | |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License version 2 as |
10 | published by the Free Software Foundation; |
11 | |
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ |
25 | |
26 | #ifndef __BLUETOOTH_H |
27 | #define __BLUETOOTH_H |
28 | |
29 | #include <linux/poll.h> |
30 | #include <net/sock.h> |
31 | #include <linux/seq_file.h> |
32 | |
33 | #define BT_SUBSYS_VERSION 2 |
34 | #define BT_SUBSYS_REVISION 22 |
35 | |
36 | #ifndef AF_BLUETOOTH |
37 | #define AF_BLUETOOTH 31 |
38 | #define PF_BLUETOOTH AF_BLUETOOTH |
39 | #endif |
40 | |
41 | /* Bluetooth versions */ |
42 | #define BLUETOOTH_VER_1_1 1 |
43 | #define BLUETOOTH_VER_1_2 2 |
44 | #define BLUETOOTH_VER_2_0 3 |
45 | #define BLUETOOTH_VER_2_1 4 |
46 | #define BLUETOOTH_VER_4_0 6 |
47 | |
48 | /* Reserv for core and drivers use */ |
49 | #define BT_SKB_RESERVE 8 |
50 | |
51 | #define BTPROTO_L2CAP 0 |
52 | #define BTPROTO_HCI 1 |
53 | #define BTPROTO_SCO 2 |
54 | #define BTPROTO_RFCOMM 3 |
55 | #define BTPROTO_BNEP 4 |
56 | #define BTPROTO_CMTP 5 |
57 | #define BTPROTO_HIDP 6 |
58 | #define BTPROTO_AVDTP 7 |
59 | #define BTPROTO_ISO 8 |
60 | #define BTPROTO_LAST BTPROTO_ISO |
61 | |
62 | #define SOL_HCI 0 |
63 | #define SOL_L2CAP 6 |
64 | #define SOL_SCO 17 |
65 | #define SOL_RFCOMM 18 |
66 | |
67 | #define BT_SECURITY 4 |
68 | struct bt_security { |
69 | __u8 level; |
70 | __u8 key_size; |
71 | }; |
72 | #define BT_SECURITY_SDP 0 |
73 | #define BT_SECURITY_LOW 1 |
74 | #define BT_SECURITY_MEDIUM 2 |
75 | #define BT_SECURITY_HIGH 3 |
76 | #define BT_SECURITY_FIPS 4 |
77 | |
78 | #define BT_DEFER_SETUP 7 |
79 | |
80 | #define BT_FLUSHABLE 8 |
81 | |
82 | #define BT_FLUSHABLE_OFF 0 |
83 | #define BT_FLUSHABLE_ON 1 |
84 | |
85 | #define BT_POWER 9 |
86 | struct bt_power { |
87 | __u8 force_active; |
88 | }; |
89 | #define BT_POWER_FORCE_ACTIVE_OFF 0 |
90 | #define BT_POWER_FORCE_ACTIVE_ON 1 |
91 | |
92 | #define BT_CHANNEL_POLICY 10 |
93 | |
94 | /* BR/EDR only (default policy) |
95 | * AMP controllers cannot be used. |
96 | * Channel move requests from the remote device are denied. |
97 | * If the L2CAP channel is currently using AMP, move the channel to BR/EDR. |
98 | */ |
99 | #define BT_CHANNEL_POLICY_BREDR_ONLY 0 |
100 | |
101 | /* BR/EDR Preferred |
102 | * Allow use of AMP controllers. |
103 | * If the L2CAP channel is currently on AMP, move it to BR/EDR. |
104 | * Channel move requests from the remote device are allowed. |
105 | */ |
106 | #define BT_CHANNEL_POLICY_BREDR_PREFERRED 1 |
107 | |
108 | /* AMP Preferred |
109 | * Allow use of AMP controllers |
110 | * If the L2CAP channel is currently on BR/EDR and AMP controller |
111 | * resources are available, initiate a channel move to AMP. |
112 | * Channel move requests from the remote device are allowed. |
113 | * If the L2CAP socket has not been connected yet, try to create |
114 | * and configure the channel directly on an AMP controller rather |
115 | * than BR/EDR. |
116 | */ |
117 | #define BT_CHANNEL_POLICY_AMP_PREFERRED 2 |
118 | |
119 | #define BT_VOICE 11 |
120 | struct bt_voice { |
121 | __u16 setting; |
122 | }; |
123 | |
124 | #define BT_VOICE_TRANSPARENT 0x0003 |
125 | #define BT_VOICE_CVSD_16BIT 0x0060 |
126 | |
127 | #define BT_SNDMTU 12 |
128 | #define BT_RCVMTU 13 |
129 | #define BT_PHY 14 |
130 | |
131 | #define BT_PHY_BR_1M_1SLOT 0x00000001 |
132 | #define BT_PHY_BR_1M_3SLOT 0x00000002 |
133 | #define BT_PHY_BR_1M_5SLOT 0x00000004 |
134 | #define BT_PHY_EDR_2M_1SLOT 0x00000008 |
135 | #define BT_PHY_EDR_2M_3SLOT 0x00000010 |
136 | #define BT_PHY_EDR_2M_5SLOT 0x00000020 |
137 | #define BT_PHY_EDR_3M_1SLOT 0x00000040 |
138 | #define BT_PHY_EDR_3M_3SLOT 0x00000080 |
139 | #define BT_PHY_EDR_3M_5SLOT 0x00000100 |
140 | #define BT_PHY_LE_1M_TX 0x00000200 |
141 | #define BT_PHY_LE_1M_RX 0x00000400 |
142 | #define BT_PHY_LE_2M_TX 0x00000800 |
143 | #define BT_PHY_LE_2M_RX 0x00001000 |
144 | #define BT_PHY_LE_CODED_TX 0x00002000 |
145 | #define BT_PHY_LE_CODED_RX 0x00004000 |
146 | |
147 | #define BT_MODE 15 |
148 | |
149 | #define BT_MODE_BASIC 0x00 |
150 | #define BT_MODE_ERTM 0x01 |
151 | #define BT_MODE_STREAMING 0x02 |
152 | #define BT_MODE_LE_FLOWCTL 0x03 |
153 | #define BT_MODE_EXT_FLOWCTL 0x04 |
154 | |
155 | #define BT_PKT_STATUS 16 |
156 | |
157 | #define BT_SCM_PKT_STATUS 0x03 |
158 | |
159 | #define BT_ISO_QOS 17 |
160 | |
161 | #define BT_ISO_QOS_CIG_UNSET 0xff |
162 | #define BT_ISO_QOS_CIS_UNSET 0xff |
163 | |
164 | #define BT_ISO_QOS_BIG_UNSET 0xff |
165 | #define BT_ISO_QOS_BIS_UNSET 0xff |
166 | |
167 | struct bt_iso_io_qos { |
168 | __u32 interval; |
169 | __u16 latency; |
170 | __u16 sdu; |
171 | __u8 phy; |
172 | __u8 rtn; |
173 | }; |
174 | |
175 | struct bt_iso_ucast_qos { |
176 | __u8 cig; |
177 | __u8 cis; |
178 | __u8 sca; |
179 | __u8 packing; |
180 | __u8 framing; |
181 | struct bt_iso_io_qos in; |
182 | struct bt_iso_io_qos out; |
183 | }; |
184 | |
185 | struct bt_iso_bcast_qos { |
186 | __u8 big; |
187 | __u8 bis; |
188 | __u8 sync_factor; |
189 | __u8 packing; |
190 | __u8 framing; |
191 | struct bt_iso_io_qos in; |
192 | struct bt_iso_io_qos out; |
193 | __u8 encryption; |
194 | __u8 bcode[16]; |
195 | __u8 options; |
196 | __u16 skip; |
197 | __u16 sync_timeout; |
198 | __u8 sync_cte_type; |
199 | __u8 mse; |
200 | __u16 timeout; |
201 | }; |
202 | |
203 | struct bt_iso_qos { |
204 | union { |
205 | struct bt_iso_ucast_qos ucast; |
206 | struct bt_iso_bcast_qos bcast; |
207 | }; |
208 | }; |
209 | |
210 | #define BT_ISO_PHY_1M 0x01 |
211 | #define BT_ISO_PHY_2M 0x02 |
212 | #define BT_ISO_PHY_CODED 0x04 |
213 | #define BT_ISO_PHY_ANY (BT_ISO_PHY_1M | BT_ISO_PHY_2M | \ |
214 | BT_ISO_PHY_CODED) |
215 | |
216 | #define BT_CODEC 19 |
217 | |
218 | struct bt_codec_caps { |
219 | __u8 len; |
220 | __u8 data[]; |
221 | } __packed; |
222 | |
223 | struct bt_codec { |
224 | __u8 id; |
225 | __u16 cid; |
226 | __u16 vid; |
227 | __u8 data_path; |
228 | __u8 num_caps; |
229 | } __packed; |
230 | |
231 | struct bt_codecs { |
232 | __u8 num_codecs; |
233 | struct bt_codec codecs[]; |
234 | } __packed; |
235 | |
236 | #define BT_CODEC_CVSD 0x02 |
237 | #define BT_CODEC_TRANSPARENT 0x03 |
238 | #define BT_CODEC_MSBC 0x05 |
239 | |
240 | #define BT_ISO_BASE 20 |
241 | |
242 | __printf(1, 2) |
243 | void bt_info(const char *fmt, ...); |
244 | __printf(1, 2) |
245 | void bt_warn(const char *fmt, ...); |
246 | __printf(1, 2) |
247 | void bt_err(const char *fmt, ...); |
248 | #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG) |
249 | void bt_dbg_set(bool enable); |
250 | bool bt_dbg_get(void); |
251 | __printf(1, 2) |
252 | void bt_dbg(const char *fmt, ...); |
253 | #endif |
254 | __printf(1, 2) |
255 | void bt_warn_ratelimited(const char *fmt, ...); |
256 | __printf(1, 2) |
257 | void bt_err_ratelimited(const char *fmt, ...); |
258 | |
259 | #define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__) |
260 | #define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__) |
261 | #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__) |
262 | |
263 | #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG) |
264 | #define BT_DBG(fmt, ...) bt_dbg(fmt "\n", ##__VA_ARGS__) |
265 | #else |
266 | #define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__) |
267 | #endif |
268 | |
269 | #define bt_dev_name(hdev) ((hdev) ? (hdev)->name : "null") |
270 | |
271 | #define bt_dev_info(hdev, fmt, ...) \ |
272 | BT_INFO("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) |
273 | #define bt_dev_warn(hdev, fmt, ...) \ |
274 | BT_WARN("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) |
275 | #define bt_dev_err(hdev, fmt, ...) \ |
276 | BT_ERR("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) |
277 | #define bt_dev_dbg(hdev, fmt, ...) \ |
278 | BT_DBG("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) |
279 | |
280 | #define bt_dev_warn_ratelimited(hdev, fmt, ...) \ |
281 | bt_warn_ratelimited("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) |
282 | #define bt_dev_err_ratelimited(hdev, fmt, ...) \ |
283 | bt_err_ratelimited("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) |
284 | |
285 | /* Connection and socket states */ |
286 | enum { |
287 | BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */ |
288 | BT_OPEN, |
289 | BT_BOUND, |
290 | BT_LISTEN, |
291 | BT_CONNECT, |
292 | BT_CONNECT2, |
293 | BT_CONFIG, |
294 | BT_DISCONN, |
295 | BT_CLOSED |
296 | }; |
297 | |
298 | /* If unused will be removed by compiler */ |
299 | static inline const char *state_to_string(int state) |
300 | { |
301 | switch (state) { |
302 | case BT_CONNECTED: |
303 | return "BT_CONNECTED" ; |
304 | case BT_OPEN: |
305 | return "BT_OPEN" ; |
306 | case BT_BOUND: |
307 | return "BT_BOUND" ; |
308 | case BT_LISTEN: |
309 | return "BT_LISTEN" ; |
310 | case BT_CONNECT: |
311 | return "BT_CONNECT" ; |
312 | case BT_CONNECT2: |
313 | return "BT_CONNECT2" ; |
314 | case BT_CONFIG: |
315 | return "BT_CONFIG" ; |
316 | case BT_DISCONN: |
317 | return "BT_DISCONN" ; |
318 | case BT_CLOSED: |
319 | return "BT_CLOSED" ; |
320 | } |
321 | |
322 | return "invalid state" ; |
323 | } |
324 | |
325 | /* BD Address */ |
326 | typedef struct { |
327 | __u8 b[6]; |
328 | } __packed bdaddr_t; |
329 | |
330 | /* BD Address type */ |
331 | #define BDADDR_BREDR 0x00 |
332 | #define BDADDR_LE_PUBLIC 0x01 |
333 | #define BDADDR_LE_RANDOM 0x02 |
334 | |
335 | static inline bool bdaddr_type_is_valid(u8 type) |
336 | { |
337 | switch (type) { |
338 | case BDADDR_BREDR: |
339 | case BDADDR_LE_PUBLIC: |
340 | case BDADDR_LE_RANDOM: |
341 | return true; |
342 | } |
343 | |
344 | return false; |
345 | } |
346 | |
347 | static inline bool bdaddr_type_is_le(u8 type) |
348 | { |
349 | switch (type) { |
350 | case BDADDR_LE_PUBLIC: |
351 | case BDADDR_LE_RANDOM: |
352 | return true; |
353 | } |
354 | |
355 | return false; |
356 | } |
357 | |
358 | #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}}) |
359 | #define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}}) |
360 | |
361 | /* Copy, swap, convert BD Address */ |
362 | static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2) |
363 | { |
364 | return memcmp(p: ba1, q: ba2, size: sizeof(bdaddr_t)); |
365 | } |
366 | static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src) |
367 | { |
368 | memcpy(dst, src, sizeof(bdaddr_t)); |
369 | } |
370 | |
371 | void baswap(bdaddr_t *dst, const bdaddr_t *src); |
372 | |
373 | /* Common socket structures and functions */ |
374 | |
375 | #define bt_sk(__sk) ((struct bt_sock *) __sk) |
376 | |
377 | struct bt_sock { |
378 | struct sock sk; |
379 | struct list_head accept_q; |
380 | struct sock *parent; |
381 | unsigned long flags; |
382 | void (*skb_msg_name)(struct sk_buff *, void *, int *); |
383 | void (*skb_put_cmsg)(struct sk_buff *, struct msghdr *, struct sock *); |
384 | }; |
385 | |
386 | enum { |
387 | BT_SK_DEFER_SETUP, |
388 | BT_SK_SUSPEND, |
389 | BT_SK_PKT_STATUS |
390 | }; |
391 | |
392 | struct bt_sock_list { |
393 | struct hlist_head head; |
394 | rwlock_t lock; |
395 | #ifdef CONFIG_PROC_FS |
396 | int (* custom_seq_show)(struct seq_file *, void *); |
397 | #endif |
398 | }; |
399 | |
400 | int bt_sock_register(int proto, const struct net_proto_family *ops); |
401 | void bt_sock_unregister(int proto); |
402 | void bt_sock_link(struct bt_sock_list *l, struct sock *s); |
403 | void bt_sock_unlink(struct bt_sock_list *l, struct sock *s); |
404 | struct sock *bt_sock_alloc(struct net *net, struct socket *sock, |
405 | struct proto *prot, int proto, gfp_t prio, int kern); |
406 | int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, |
407 | int flags); |
408 | int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg, |
409 | size_t len, int flags); |
410 | __poll_t bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait); |
411 | int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); |
412 | int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo); |
413 | int bt_sock_wait_ready(struct sock *sk, unsigned int msg_flags); |
414 | |
415 | void bt_accept_enqueue(struct sock *parent, struct sock *sk, bool bh); |
416 | void bt_accept_unlink(struct sock *sk); |
417 | struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock); |
418 | |
419 | /* Skb helpers */ |
420 | struct l2cap_ctrl { |
421 | u8 sframe:1, |
422 | poll:1, |
423 | final:1, |
424 | fcs:1, |
425 | sar:2, |
426 | super:2; |
427 | |
428 | u16 reqseq; |
429 | u16 txseq; |
430 | u8 retries; |
431 | __le16 psm; |
432 | bdaddr_t bdaddr; |
433 | struct l2cap_chan *chan; |
434 | }; |
435 | |
436 | struct hci_dev; |
437 | |
438 | typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode); |
439 | typedef void (*hci_req_complete_skb_t)(struct hci_dev *hdev, u8 status, |
440 | u16 opcode, struct sk_buff *skb); |
441 | |
442 | #define HCI_REQ_START BIT(0) |
443 | #define HCI_REQ_SKB BIT(1) |
444 | |
445 | struct hci_ctrl { |
446 | struct sock *sk; |
447 | u16 opcode; |
448 | u8 req_flags; |
449 | u8 req_event; |
450 | union { |
451 | hci_req_complete_t req_complete; |
452 | hci_req_complete_skb_t req_complete_skb; |
453 | }; |
454 | }; |
455 | |
456 | struct mgmt_ctrl { |
457 | struct hci_dev *hdev; |
458 | u16 opcode; |
459 | }; |
460 | |
461 | struct bt_skb_cb { |
462 | u8 pkt_type; |
463 | u8 force_active; |
464 | u16 expect; |
465 | u8 incoming:1; |
466 | u8 pkt_status:2; |
467 | union { |
468 | struct l2cap_ctrl l2cap; |
469 | struct hci_ctrl hci; |
470 | struct mgmt_ctrl mgmt; |
471 | struct scm_creds creds; |
472 | }; |
473 | }; |
474 | #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb)) |
475 | |
476 | #define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type |
477 | #define hci_skb_pkt_status(skb) bt_cb((skb))->pkt_status |
478 | #define hci_skb_expect(skb) bt_cb((skb))->expect |
479 | #define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode |
480 | #define hci_skb_event(skb) bt_cb((skb))->hci.req_event |
481 | #define hci_skb_sk(skb) bt_cb((skb))->hci.sk |
482 | |
483 | static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how) |
484 | { |
485 | struct sk_buff *skb; |
486 | |
487 | skb = alloc_skb(size: len + BT_SKB_RESERVE, priority: how); |
488 | if (skb) |
489 | skb_reserve(skb, BT_SKB_RESERVE); |
490 | return skb; |
491 | } |
492 | |
493 | static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, |
494 | unsigned long len, int nb, int *err) |
495 | { |
496 | struct sk_buff *skb; |
497 | |
498 | skb = sock_alloc_send_skb(sk, size: len + BT_SKB_RESERVE, noblock: nb, errcode: err); |
499 | if (skb) |
500 | skb_reserve(skb, BT_SKB_RESERVE); |
501 | |
502 | if (!skb && *err) |
503 | return NULL; |
504 | |
505 | *err = sock_error(sk); |
506 | if (*err) |
507 | goto out; |
508 | |
509 | if (sk->sk_shutdown) { |
510 | *err = -ECONNRESET; |
511 | goto out; |
512 | } |
513 | |
514 | return skb; |
515 | |
516 | out: |
517 | kfree_skb(skb); |
518 | return NULL; |
519 | } |
520 | |
521 | /* Shall not be called with lock_sock held */ |
522 | static inline struct sk_buff *bt_skb_sendmsg(struct sock *sk, |
523 | struct msghdr *msg, |
524 | size_t len, size_t mtu, |
525 | size_t headroom, size_t tailroom) |
526 | { |
527 | struct sk_buff *skb; |
528 | size_t size = min_t(size_t, len, mtu); |
529 | int err; |
530 | |
531 | skb = bt_skb_send_alloc(sk, len: size + headroom + tailroom, |
532 | nb: msg->msg_flags & MSG_DONTWAIT, err: &err); |
533 | if (!skb) |
534 | return ERR_PTR(error: err); |
535 | |
536 | skb_reserve(skb, len: headroom); |
537 | skb_tailroom_reserve(skb, mtu, needed_tailroom: tailroom); |
538 | |
539 | if (!copy_from_iter_full(addr: skb_put(skb, len: size), bytes: size, i: &msg->msg_iter)) { |
540 | kfree_skb(skb); |
541 | return ERR_PTR(error: -EFAULT); |
542 | } |
543 | |
544 | skb->priority = READ_ONCE(sk->sk_priority); |
545 | |
546 | return skb; |
547 | } |
548 | |
549 | /* Similar to bt_skb_sendmsg but can split the msg into multiple fragments |
550 | * accourding to the MTU. |
551 | */ |
552 | static inline struct sk_buff *bt_skb_sendmmsg(struct sock *sk, |
553 | struct msghdr *msg, |
554 | size_t len, size_t mtu, |
555 | size_t headroom, size_t tailroom) |
556 | { |
557 | struct sk_buff *skb, **frag; |
558 | |
559 | skb = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom); |
560 | if (IS_ERR(ptr: skb)) |
561 | return skb; |
562 | |
563 | len -= skb->len; |
564 | if (!len) |
565 | return skb; |
566 | |
567 | /* Add remaining data over MTU as continuation fragments */ |
568 | frag = &skb_shinfo(skb)->frag_list; |
569 | while (len) { |
570 | struct sk_buff *tmp; |
571 | |
572 | tmp = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom); |
573 | if (IS_ERR(ptr: tmp)) { |
574 | return skb; |
575 | } |
576 | |
577 | len -= tmp->len; |
578 | |
579 | *frag = tmp; |
580 | frag = &(*frag)->next; |
581 | } |
582 | |
583 | return skb; |
584 | } |
585 | |
586 | int bt_to_errno(u16 code); |
587 | __u8 bt_status(int err); |
588 | |
589 | void hci_sock_set_flag(struct sock *sk, int nr); |
590 | void hci_sock_clear_flag(struct sock *sk, int nr); |
591 | int hci_sock_test_flag(struct sock *sk, int nr); |
592 | unsigned short hci_sock_get_channel(struct sock *sk); |
593 | u32 hci_sock_get_cookie(struct sock *sk); |
594 | |
595 | int hci_sock_init(void); |
596 | void hci_sock_cleanup(void); |
597 | |
598 | int bt_sysfs_init(void); |
599 | void bt_sysfs_cleanup(void); |
600 | |
601 | int bt_procfs_init(struct net *net, const char *name, |
602 | struct bt_sock_list *sk_list, |
603 | int (*seq_show)(struct seq_file *, void *)); |
604 | void bt_procfs_cleanup(struct net *net, const char *name); |
605 | |
606 | extern struct dentry *bt_debugfs; |
607 | |
608 | int l2cap_init(void); |
609 | void l2cap_exit(void); |
610 | |
611 | #if IS_ENABLED(CONFIG_BT_BREDR) |
612 | int sco_init(void); |
613 | void sco_exit(void); |
614 | #else |
615 | static inline int sco_init(void) |
616 | { |
617 | return 0; |
618 | } |
619 | |
620 | static inline void sco_exit(void) |
621 | { |
622 | } |
623 | #endif |
624 | |
625 | #if IS_ENABLED(CONFIG_BT_LE) |
626 | int iso_init(void); |
627 | int iso_exit(void); |
628 | bool iso_enabled(void); |
629 | #else |
630 | static inline int iso_init(void) |
631 | { |
632 | return 0; |
633 | } |
634 | |
635 | static inline int iso_exit(void) |
636 | { |
637 | return 0; |
638 | } |
639 | |
640 | static inline bool iso_enabled(void) |
641 | { |
642 | return false; |
643 | } |
644 | #endif |
645 | |
646 | int mgmt_init(void); |
647 | void mgmt_exit(void); |
648 | void mgmt_cleanup(struct sock *sk); |
649 | |
650 | void bt_sock_reclassify_lock(struct sock *sk, int proto); |
651 | |
652 | #endif /* __BLUETOOTH_H */ |
653 | |