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 #include <linux/ethtool.h> 33 34 #define BT_SUBSYS_VERSION 2 35 #define BT_SUBSYS_REVISION 22 36 37 #ifndef AF_BLUETOOTH 38 #define AF_BLUETOOTH 31 39 #define PF_BLUETOOTH AF_BLUETOOTH 40 #endif 41 42 /* Bluetooth versions */ 43 #define BLUETOOTH_VER_1_1 1 44 #define BLUETOOTH_VER_1_2 2 45 #define BLUETOOTH_VER_2_0 3 46 #define BLUETOOTH_VER_2_1 4 47 #define BLUETOOTH_VER_4_0 6 48 49 /* Reserv for core and drivers use */ 50 #define BT_SKB_RESERVE 8 51 52 #define BTPROTO_L2CAP 0 53 #define BTPROTO_HCI 1 54 #define BTPROTO_SCO 2 55 #define BTPROTO_RFCOMM 3 56 #define BTPROTO_BNEP 4 57 #define BTPROTO_CMTP 5 58 #define BTPROTO_HIDP 6 59 #define BTPROTO_AVDTP 7 60 #define BTPROTO_ISO 8 61 #define BTPROTO_LAST BTPROTO_ISO 62 63 #define SOL_HCI 0 64 #define SOL_L2CAP 6 65 #define SOL_SCO 17 66 #define SOL_RFCOMM 18 67 68 #define BT_SECURITY 4 69 struct bt_security { 70 __u8 level; 71 __u8 key_size; 72 }; 73 #define BT_SECURITY_SDP 0 74 #define BT_SECURITY_LOW 1 75 #define BT_SECURITY_MEDIUM 2 76 #define BT_SECURITY_HIGH 3 77 #define BT_SECURITY_FIPS 4 78 79 #define BT_DEFER_SETUP 7 80 81 #define BT_FLUSHABLE 8 82 83 #define BT_FLUSHABLE_OFF 0 84 #define BT_FLUSHABLE_ON 1 85 86 #define BT_POWER 9 87 struct bt_power { 88 __u8 force_active; 89 }; 90 #define BT_POWER_FORCE_ACTIVE_OFF 0 91 #define BT_POWER_FORCE_ACTIVE_ON 1 92 93 #define BT_CHANNEL_POLICY 10 94 95 /* BR/EDR only (default policy) 96 * AMP controllers cannot be used. 97 * Channel move requests from the remote device are denied. 98 * If the L2CAP channel is currently using AMP, move the channel to BR/EDR. 99 */ 100 #define BT_CHANNEL_POLICY_BREDR_ONLY 0 101 102 /* BR/EDR Preferred 103 * Allow use of AMP controllers. 104 * If the L2CAP channel is currently on AMP, move it to BR/EDR. 105 * Channel move requests from the remote device are allowed. 106 */ 107 #define BT_CHANNEL_POLICY_BREDR_PREFERRED 1 108 109 /* AMP Preferred 110 * Allow use of AMP controllers 111 * If the L2CAP channel is currently on BR/EDR and AMP controller 112 * resources are available, initiate a channel move to AMP. 113 * Channel move requests from the remote device are allowed. 114 * If the L2CAP socket has not been connected yet, try to create 115 * and configure the channel directly on an AMP controller rather 116 * than BR/EDR. 117 */ 118 #define BT_CHANNEL_POLICY_AMP_PREFERRED 2 119 120 #define BT_VOICE 11 121 struct bt_voice { 122 __u16 setting; 123 }; 124 125 #define BT_VOICE_TRANSPARENT 0x0003 126 #define BT_VOICE_CVSD_16BIT 0x0060 127 #define BT_VOICE_TRANSPARENT_16BIT 0x0063 128 129 #define BT_SNDMTU 12 130 #define BT_RCVMTU 13 131 #define BT_PHY 14 132 133 #define BT_PHY_BR_1M_1SLOT 0x00000001 134 #define BT_PHY_BR_1M_3SLOT 0x00000002 135 #define BT_PHY_BR_1M_5SLOT 0x00000004 136 #define BT_PHY_EDR_2M_1SLOT 0x00000008 137 #define BT_PHY_EDR_2M_3SLOT 0x00000010 138 #define BT_PHY_EDR_2M_5SLOT 0x00000020 139 #define BT_PHY_EDR_3M_1SLOT 0x00000040 140 #define BT_PHY_EDR_3M_3SLOT 0x00000080 141 #define BT_PHY_EDR_3M_5SLOT 0x00000100 142 #define BT_PHY_LE_1M_TX 0x00000200 143 #define BT_PHY_LE_1M_RX 0x00000400 144 #define BT_PHY_LE_2M_TX 0x00000800 145 #define BT_PHY_LE_2M_RX 0x00001000 146 #define BT_PHY_LE_CODED_TX 0x00002000 147 #define BT_PHY_LE_CODED_RX 0x00004000 148 149 #define BT_MODE 15 150 151 #define BT_MODE_BASIC 0x00 152 #define BT_MODE_ERTM 0x01 153 #define BT_MODE_STREAMING 0x02 154 #define BT_MODE_LE_FLOWCTL 0x03 155 #define BT_MODE_EXT_FLOWCTL 0x04 156 157 #define BT_PKT_STATUS 16 158 159 #define BT_SCM_PKT_STATUS 0x03 160 #define BT_SCM_ERROR 0x04 161 162 #define BT_ISO_QOS 17 163 164 #define BT_ISO_QOS_CIG_UNSET 0xff 165 #define BT_ISO_QOS_CIS_UNSET 0xff 166 167 #define BT_ISO_QOS_BIG_UNSET 0xff 168 #define BT_ISO_QOS_BIS_UNSET 0xff 169 170 #define BT_ISO_SYNC_TIMEOUT 0x07d0 /* 20 secs */ 171 172 struct bt_iso_io_qos { 173 __u32 interval; 174 __u16 latency; 175 __u16 sdu; 176 __u8 phy; 177 __u8 rtn; 178 }; 179 180 struct bt_iso_ucast_qos { 181 __u8 cig; 182 __u8 cis; 183 __u8 sca; 184 __u8 packing; 185 __u8 framing; 186 struct bt_iso_io_qos in; 187 struct bt_iso_io_qos out; 188 }; 189 190 struct bt_iso_bcast_qos { 191 __u8 big; 192 __u8 bis; 193 __u8 sync_factor; 194 __u8 packing; 195 __u8 framing; 196 struct bt_iso_io_qos in; 197 struct bt_iso_io_qos out; 198 __u8 encryption; 199 __u8 bcode[16]; 200 __u8 options; 201 __u16 skip; 202 __u16 sync_timeout; 203 __u8 sync_cte_type; 204 __u8 mse; 205 __u16 timeout; 206 }; 207 208 struct bt_iso_qos { 209 union { 210 struct bt_iso_ucast_qos ucast; 211 struct bt_iso_bcast_qos bcast; 212 }; 213 }; 214 215 #define BT_ISO_PHY_1M 0x01 216 #define BT_ISO_PHY_2M 0x02 217 #define BT_ISO_PHY_CODED 0x04 218 #define BT_ISO_PHY_ANY (BT_ISO_PHY_1M | BT_ISO_PHY_2M | \ 219 BT_ISO_PHY_CODED) 220 221 #define BT_CODEC 19 222 223 struct bt_codec_caps { 224 __u8 len; 225 __u8 data[]; 226 } __packed; 227 228 struct bt_codec { 229 __u8 id; 230 __u16 cid; 231 __u16 vid; 232 __u8 data_path; 233 __u8 num_caps; 234 } __packed; 235 236 struct bt_codecs { 237 __u8 num_codecs; 238 struct bt_codec codecs[]; 239 } __packed; 240 241 #define BT_CODEC_CVSD 0x02 242 #define BT_CODEC_TRANSPARENT 0x03 243 #define BT_CODEC_MSBC 0x05 244 245 #define BT_ISO_BASE 20 246 247 /* Socket option value 21 reserved */ 248 249 #define BT_PKT_SEQNUM 22 250 251 #define BT_SCM_PKT_SEQNUM 0x05 252 253 __printf(1, 2) 254 void bt_info(const char *fmt, ...); 255 __printf(1, 2) 256 void bt_warn(const char *fmt, ...); 257 __printf(1, 2) 258 void bt_err(const char *fmt, ...); 259 #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG) 260 void bt_dbg_set(bool enable); 261 bool bt_dbg_get(void); 262 __printf(1, 2) 263 void bt_dbg(const char *fmt, ...); 264 #endif 265 __printf(1, 2) 266 void bt_warn_ratelimited(const char *fmt, ...); 267 __printf(1, 2) 268 void bt_err_ratelimited(const char *fmt, ...); 269 270 #define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__) 271 #define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__) 272 #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__) 273 274 #if IS_ENABLED(CONFIG_BT_FEATURE_DEBUG) 275 #define BT_DBG(fmt, ...) bt_dbg(fmt "\n", ##__VA_ARGS__) 276 #else 277 #define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__) 278 #endif 279 280 #define bt_dev_name(hdev) ((hdev) ? (hdev)->name : "null") 281 282 #define bt_dev_info(hdev, fmt, ...) \ 283 BT_INFO("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) 284 #define bt_dev_warn(hdev, fmt, ...) \ 285 BT_WARN("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) 286 #define bt_dev_err(hdev, fmt, ...) \ 287 BT_ERR("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) 288 #define bt_dev_dbg(hdev, fmt, ...) \ 289 BT_DBG("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) 290 291 #define bt_dev_warn_ratelimited(hdev, fmt, ...) \ 292 bt_warn_ratelimited("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) 293 #define bt_dev_err_ratelimited(hdev, fmt, ...) \ 294 bt_err_ratelimited("%s: " fmt, bt_dev_name(hdev), ##__VA_ARGS__) 295 296 /* Connection and socket states */ 297 enum bt_sock_state { 298 BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */ 299 BT_OPEN, 300 BT_BOUND, 301 BT_LISTEN, 302 BT_CONNECT, 303 BT_CONNECT2, 304 BT_CONFIG, 305 BT_DISCONN, 306 BT_CLOSED 307 }; 308 309 /* If unused will be removed by compiler */ 310 static inline const char *state_to_string(int state) 311 { 312 switch (state) { 313 case BT_CONNECTED: 314 return "BT_CONNECTED"; 315 case BT_OPEN: 316 return "BT_OPEN"; 317 case BT_BOUND: 318 return "BT_BOUND"; 319 case BT_LISTEN: 320 return "BT_LISTEN"; 321 case BT_CONNECT: 322 return "BT_CONNECT"; 323 case BT_CONNECT2: 324 return "BT_CONNECT2"; 325 case BT_CONFIG: 326 return "BT_CONFIG"; 327 case BT_DISCONN: 328 return "BT_DISCONN"; 329 case BT_CLOSED: 330 return "BT_CLOSED"; 331 } 332 333 return "invalid state"; 334 } 335 336 /* BD Address */ 337 typedef struct { 338 __u8 b[6]; 339 } __packed bdaddr_t; 340 341 /* BD Address type */ 342 #define BDADDR_BREDR 0x00 343 #define BDADDR_LE_PUBLIC 0x01 344 #define BDADDR_LE_RANDOM 0x02 345 346 static inline bool bdaddr_type_is_valid(u8 type) 347 { 348 switch (type) { 349 case BDADDR_BREDR: 350 case BDADDR_LE_PUBLIC: 351 case BDADDR_LE_RANDOM: 352 return true; 353 } 354 355 return false; 356 } 357 358 static inline bool bdaddr_type_is_le(u8 type) 359 { 360 switch (type) { 361 case BDADDR_LE_PUBLIC: 362 case BDADDR_LE_RANDOM: 363 return true; 364 } 365 366 return false; 367 } 368 369 #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}}) 370 #define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}}) 371 372 /* Copy, swap, convert BD Address */ 373 static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2) 374 { 375 return memcmp(ba1, ba2, sizeof(bdaddr_t)); 376 } 377 static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src) 378 { 379 memcpy(dst, src, sizeof(bdaddr_t)); 380 } 381 382 void baswap(bdaddr_t *dst, const bdaddr_t *src); 383 384 /* Common socket structures and functions */ 385 386 #define bt_sk(__sk) ((struct bt_sock *) __sk) 387 388 struct bt_sock { 389 struct sock sk; 390 struct list_head accept_q; 391 struct sock *parent; 392 unsigned long flags; 393 void (*skb_msg_name)(struct sk_buff *, void *, int *); 394 void (*skb_put_cmsg)(struct sk_buff *, struct msghdr *, struct sock *); 395 }; 396 397 enum { 398 BT_SK_DEFER_SETUP, 399 BT_SK_SUSPEND, 400 BT_SK_PKT_STATUS, 401 BT_SK_PKT_SEQNUM, 402 }; 403 404 struct bt_sock_list { 405 struct hlist_head head; 406 rwlock_t lock; 407 #ifdef CONFIG_PROC_FS 408 int (* custom_seq_show)(struct seq_file *, void *); 409 #endif 410 }; 411 412 int bt_sock_register(int proto, const struct net_proto_family *ops); 413 void bt_sock_unregister(int proto); 414 void bt_sock_link(struct bt_sock_list *l, struct sock *s); 415 void bt_sock_unlink(struct bt_sock_list *l, struct sock *s); 416 bool bt_sock_linked(struct bt_sock_list *l, struct sock *s); 417 struct sock *bt_sock_alloc(struct net *net, struct socket *sock, 418 struct proto *prot, int proto, gfp_t prio, int kern); 419 int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, 420 int flags); 421 int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg, 422 size_t len, int flags); 423 __poll_t bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait); 424 int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); 425 int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo); 426 int bt_sock_wait_ready(struct sock *sk, unsigned int msg_flags); 427 428 void bt_accept_enqueue(struct sock *parent, struct sock *sk, bool bh); 429 void bt_accept_unlink(struct sock *sk); 430 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock); 431 432 /* Skb helpers */ 433 struct l2cap_ctrl { 434 u8 sframe:1, 435 poll:1, 436 final:1, 437 fcs:1, 438 sar:2, 439 super:2; 440 441 u16 reqseq; 442 u16 txseq; 443 u8 retries; 444 __le16 psm; 445 bdaddr_t bdaddr; 446 struct l2cap_chan *chan; 447 }; 448 449 struct hci_dev; 450 451 typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode); 452 typedef void (*hci_req_complete_skb_t)(struct hci_dev *hdev, u8 status, 453 u16 opcode, struct sk_buff *skb); 454 455 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, 456 hci_req_complete_t *req_complete, 457 hci_req_complete_skb_t *req_complete_skb); 458 459 int hci_ethtool_ts_info(unsigned int index, int sk_proto, 460 struct kernel_ethtool_ts_info *ts_info); 461 462 #define HCI_REQ_START BIT(0) 463 #define HCI_REQ_SKB BIT(1) 464 465 struct hci_ctrl { 466 struct sock *sk; 467 u16 opcode; 468 u8 req_flags; 469 u8 req_event; 470 union { 471 hci_req_complete_t req_complete; 472 hci_req_complete_skb_t req_complete_skb; 473 }; 474 }; 475 476 struct mgmt_ctrl { 477 struct hci_dev *hdev; 478 u16 opcode; 479 }; 480 481 struct bt_skb_cb { 482 u8 pkt_type; 483 u8 force_active; 484 u16 expect; 485 u16 pkt_seqnum; 486 u8 incoming:1; 487 u8 pkt_status:2; 488 union { 489 struct l2cap_ctrl l2cap; 490 struct hci_ctrl hci; 491 struct mgmt_ctrl mgmt; 492 struct scm_creds creds; 493 }; 494 }; 495 #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb)) 496 497 #define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type 498 #define hci_skb_pkt_status(skb) bt_cb((skb))->pkt_status 499 #define hci_skb_pkt_seqnum(skb) bt_cb((skb))->pkt_seqnum 500 #define hci_skb_expect(skb) bt_cb((skb))->expect 501 #define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode 502 #define hci_skb_event(skb) bt_cb((skb))->hci.req_event 503 #define hci_skb_sk(skb) bt_cb((skb))->hci.sk 504 505 static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how) 506 { 507 struct sk_buff *skb; 508 509 skb = alloc_skb(len + BT_SKB_RESERVE, how); 510 if (skb) 511 skb_reserve(skb, BT_SKB_RESERVE); 512 return skb; 513 } 514 515 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, 516 unsigned long len, int nb, int *err) 517 { 518 struct sk_buff *skb; 519 520 skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err); 521 if (skb) 522 skb_reserve(skb, BT_SKB_RESERVE); 523 524 if (!skb && *err) 525 return NULL; 526 527 *err = sock_error(sk); 528 if (*err) 529 goto out; 530 531 if (sk->sk_shutdown) { 532 *err = -ECONNRESET; 533 goto out; 534 } 535 536 return skb; 537 538 out: 539 kfree_skb(skb); 540 return NULL; 541 } 542 543 /* Shall not be called with lock_sock held */ 544 static inline struct sk_buff *bt_skb_sendmsg(struct sock *sk, 545 struct msghdr *msg, 546 size_t len, size_t mtu, 547 size_t headroom, size_t tailroom) 548 { 549 struct sk_buff *skb; 550 size_t size = min_t(size_t, len, mtu); 551 int err; 552 553 skb = bt_skb_send_alloc(sk, size + headroom + tailroom, 554 msg->msg_flags & MSG_DONTWAIT, &err); 555 if (!skb) 556 return ERR_PTR(err); 557 558 skb_reserve(skb, headroom); 559 skb_tailroom_reserve(skb, mtu, tailroom); 560 561 if (!copy_from_iter_full(skb_put(skb, size), size, &msg->msg_iter)) { 562 kfree_skb(skb); 563 return ERR_PTR(-EFAULT); 564 } 565 566 skb->priority = READ_ONCE(sk->sk_priority); 567 568 return skb; 569 } 570 571 /* Similar to bt_skb_sendmsg but can split the msg into multiple fragments 572 * accourding to the MTU. 573 */ 574 static inline struct sk_buff *bt_skb_sendmmsg(struct sock *sk, 575 struct msghdr *msg, 576 size_t len, size_t mtu, 577 size_t headroom, size_t tailroom) 578 { 579 struct sk_buff *skb, **frag; 580 581 skb = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom); 582 if (IS_ERR(skb)) 583 return skb; 584 585 len -= skb->len; 586 if (!len) 587 return skb; 588 589 /* Add remaining data over MTU as continuation fragments */ 590 frag = &skb_shinfo(skb)->frag_list; 591 while (len) { 592 struct sk_buff *tmp; 593 594 tmp = bt_skb_sendmsg(sk, msg, len, mtu, headroom, tailroom); 595 if (IS_ERR(tmp)) { 596 return skb; 597 } 598 599 len -= tmp->len; 600 601 *frag = tmp; 602 frag = &(*frag)->next; 603 } 604 605 return skb; 606 } 607 608 int bt_to_errno(u16 code); 609 __u8 bt_status(int err); 610 611 void hci_sock_set_flag(struct sock *sk, int nr); 612 void hci_sock_clear_flag(struct sock *sk, int nr); 613 int hci_sock_test_flag(struct sock *sk, int nr); 614 unsigned short hci_sock_get_channel(struct sock *sk); 615 u32 hci_sock_get_cookie(struct sock *sk); 616 617 int hci_sock_init(void); 618 void hci_sock_cleanup(void); 619 620 int bt_sysfs_init(void); 621 void bt_sysfs_cleanup(void); 622 623 int bt_procfs_init(struct net *net, const char *name, 624 struct bt_sock_list *sk_list, 625 int (*seq_show)(struct seq_file *, void *)); 626 void bt_procfs_cleanup(struct net *net, const char *name); 627 628 extern struct dentry *bt_debugfs; 629 630 int l2cap_init(void); 631 void l2cap_exit(void); 632 633 #if IS_ENABLED(CONFIG_BT_BREDR) 634 int sco_init(void); 635 void sco_exit(void); 636 #else 637 static inline int sco_init(void) 638 { 639 return 0; 640 } 641 642 static inline void sco_exit(void) 643 { 644 } 645 #endif 646 647 #if IS_ENABLED(CONFIG_BT_LE) 648 int iso_init(void); 649 int iso_exit(void); 650 bool iso_inited(void); 651 #else 652 static inline int iso_init(void) 653 { 654 return 0; 655 } 656 657 static inline int iso_exit(void) 658 { 659 return 0; 660 } 661 662 static inline bool iso_inited(void) 663 { 664 return false; 665 } 666 #endif 667 668 int mgmt_init(void); 669 void mgmt_exit(void); 670 void mgmt_cleanup(struct sock *sk); 671 672 void bt_sock_reclassify_lock(struct sock *sk, int proto); 673 674 #endif /* __BLUETOOTH_H */ 675