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 __HCI_CORE_H 26 #define __HCI_CORE_H 27 28 #include <net/bluetooth/hci.h> 29 30 /* HCI upper protocols */ 31 #define HCI_PROTO_L2CAP 0 32 #define HCI_PROTO_SCO 1 33 34 /* HCI Core structures */ 35 struct inquiry_data { 36 bdaddr_t bdaddr; 37 __u8 pscan_rep_mode; 38 __u8 pscan_period_mode; 39 __u8 pscan_mode; 40 __u8 dev_class[3]; 41 __le16 clock_offset; 42 __s8 rssi; 43 }; 44 45 struct inquiry_entry { 46 struct inquiry_entry *next; 47 __u32 timestamp; 48 struct inquiry_data data; 49 }; 50 51 struct inquiry_cache { 52 spinlock_t lock; 53 __u32 timestamp; 54 struct inquiry_entry *list; 55 }; 56 57 struct hci_conn_hash { 58 struct list_head list; 59 spinlock_t lock; 60 unsigned int acl_num; 61 unsigned int sco_num; 62 }; 63 64 struct hci_dev { 65 struct list_head list; 66 spinlock_t lock; 67 atomic_t refcnt; 68 69 char name[8]; 70 unsigned long flags; 71 __u16 id; 72 __u8 type; 73 bdaddr_t bdaddr; 74 __u8 dev_name[248]; 75 __u8 dev_class[3]; 76 __u8 features[8]; 77 __u8 commands[64]; 78 __u8 hci_ver; 79 __u16 hci_rev; 80 __u16 manufacturer; 81 __u16 voice_setting; 82 83 __u16 pkt_type; 84 __u16 esco_type; 85 __u16 link_policy; 86 __u16 link_mode; 87 88 __u32 idle_timeout; 89 __u16 sniff_min_interval; 90 __u16 sniff_max_interval; 91 92 unsigned long quirks; 93 94 atomic_t cmd_cnt; 95 unsigned int acl_cnt; 96 unsigned int sco_cnt; 97 98 unsigned int acl_mtu; 99 unsigned int sco_mtu; 100 unsigned int acl_pkts; 101 unsigned int sco_pkts; 102 103 unsigned long cmd_last_tx; 104 unsigned long acl_last_tx; 105 unsigned long sco_last_tx; 106 107 struct tasklet_struct cmd_task; 108 struct tasklet_struct rx_task; 109 struct tasklet_struct tx_task; 110 111 struct sk_buff_head rx_q; 112 struct sk_buff_head raw_q; 113 struct sk_buff_head cmd_q; 114 115 struct sk_buff *sent_cmd; 116 struct sk_buff *reassembly[3]; 117 118 struct semaphore req_lock; 119 wait_queue_head_t req_wait_q; 120 __u32 req_status; 121 __u32 req_result; 122 123 struct inquiry_cache inq_cache; 124 struct hci_conn_hash conn_hash; 125 126 struct hci_dev_stats stat; 127 128 struct sk_buff_head driver_init; 129 130 void *driver_data; 131 void *core_data; 132 133 atomic_t promisc; 134 135 struct device *parent; 136 struct device dev; 137 138 struct module *owner; 139 140 int (*open)(struct hci_dev *hdev); 141 int (*close)(struct hci_dev *hdev); 142 int (*flush)(struct hci_dev *hdev); 143 int (*send)(struct sk_buff *skb); 144 void (*destruct)(struct hci_dev *hdev); 145 void (*notify)(struct hci_dev *hdev, unsigned int evt); 146 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg); 147 }; 148 149 struct hci_conn { 150 struct list_head list; 151 152 atomic_t refcnt; 153 spinlock_t lock; 154 155 bdaddr_t dst; 156 __u16 handle; 157 __u16 state; 158 __u8 mode; 159 __u8 type; 160 __u8 out; 161 __u8 attempt; 162 __u8 dev_class[3]; 163 __u8 features[8]; 164 __u16 interval; 165 __u16 link_policy; 166 __u32 link_mode; 167 __u8 power_save; 168 unsigned long pend; 169 170 unsigned int sent; 171 172 struct sk_buff_head data_q; 173 174 struct timer_list disc_timer; 175 struct timer_list idle_timer; 176 177 struct work_struct work; 178 179 struct device dev; 180 181 struct hci_dev *hdev; 182 void *l2cap_data; 183 void *sco_data; 184 void *priv; 185 186 struct hci_conn *link; 187 }; 188 189 extern struct hci_proto *hci_proto[]; 190 extern struct list_head hci_dev_list; 191 extern struct list_head hci_cb_list; 192 extern rwlock_t hci_dev_list_lock; 193 extern rwlock_t hci_cb_list_lock; 194 195 /* ----- Inquiry cache ----- */ 196 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds 197 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds 198 199 #define inquiry_cache_lock(c) spin_lock(&c->lock) 200 #define inquiry_cache_unlock(c) spin_unlock(&c->lock) 201 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock) 202 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock) 203 204 static inline void inquiry_cache_init(struct hci_dev *hdev) 205 { 206 struct inquiry_cache *c = &hdev->inq_cache; 207 spin_lock_init(&c->lock); 208 c->list = NULL; 209 } 210 211 static inline int inquiry_cache_empty(struct hci_dev *hdev) 212 { 213 struct inquiry_cache *c = &hdev->inq_cache; 214 return (c->list == NULL); 215 } 216 217 static inline long inquiry_cache_age(struct hci_dev *hdev) 218 { 219 struct inquiry_cache *c = &hdev->inq_cache; 220 return jiffies - c->timestamp; 221 } 222 223 static inline long inquiry_entry_age(struct inquiry_entry *e) 224 { 225 return jiffies - e->timestamp; 226 } 227 228 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr); 229 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data); 230 231 /* ----- HCI Connections ----- */ 232 enum { 233 HCI_CONN_AUTH_PEND, 234 HCI_CONN_ENCRYPT_PEND, 235 HCI_CONN_RSWITCH_PEND, 236 HCI_CONN_MODE_CHANGE_PEND, 237 }; 238 239 static inline void hci_conn_hash_init(struct hci_dev *hdev) 240 { 241 struct hci_conn_hash *h = &hdev->conn_hash; 242 INIT_LIST_HEAD(&h->list); 243 spin_lock_init(&h->lock); 244 h->acl_num = 0; 245 h->sco_num = 0; 246 } 247 248 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 249 { 250 struct hci_conn_hash *h = &hdev->conn_hash; 251 list_add(&c->list, &h->list); 252 if (c->type == ACL_LINK) 253 h->acl_num++; 254 else 255 h->sco_num++; 256 } 257 258 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 259 { 260 struct hci_conn_hash *h = &hdev->conn_hash; 261 list_del(&c->list); 262 if (c->type == ACL_LINK) 263 h->acl_num--; 264 else 265 h->sco_num--; 266 } 267 268 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 269 __u16 handle) 270 { 271 struct hci_conn_hash *h = &hdev->conn_hash; 272 struct list_head *p; 273 struct hci_conn *c; 274 275 list_for_each(p, &h->list) { 276 c = list_entry(p, struct hci_conn, list); 277 if (c->handle == handle) 278 return c; 279 } 280 return NULL; 281 } 282 283 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 284 __u8 type, bdaddr_t *ba) 285 { 286 struct hci_conn_hash *h = &hdev->conn_hash; 287 struct list_head *p; 288 struct hci_conn *c; 289 290 list_for_each(p, &h->list) { 291 c = list_entry(p, struct hci_conn, list); 292 if (c->type == type && !bacmp(&c->dst, ba)) 293 return c; 294 } 295 return NULL; 296 } 297 298 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 299 __u8 type, __u16 state) 300 { 301 struct hci_conn_hash *h = &hdev->conn_hash; 302 struct list_head *p; 303 struct hci_conn *c; 304 305 list_for_each(p, &h->list) { 306 c = list_entry(p, struct hci_conn, list); 307 if (c->type == type && c->state == state) 308 return c; 309 } 310 return NULL; 311 } 312 313 void hci_acl_connect(struct hci_conn *conn); 314 void hci_acl_disconn(struct hci_conn *conn, __u8 reason); 315 void hci_add_sco(struct hci_conn *conn, __u16 handle); 316 void hci_setup_sync(struct hci_conn *conn, __u16 handle); 317 318 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst); 319 int hci_conn_del(struct hci_conn *conn); 320 void hci_conn_hash_flush(struct hci_dev *hdev); 321 void hci_conn_check_pending(struct hci_dev *hdev); 322 323 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src); 324 int hci_conn_auth(struct hci_conn *conn); 325 int hci_conn_encrypt(struct hci_conn *conn); 326 int hci_conn_change_link_key(struct hci_conn *conn); 327 int hci_conn_switch_role(struct hci_conn *conn, uint8_t role); 328 329 void hci_conn_enter_active_mode(struct hci_conn *conn); 330 void hci_conn_enter_sniff_mode(struct hci_conn *conn); 331 332 static inline void hci_conn_hold(struct hci_conn *conn) 333 { 334 atomic_inc(&conn->refcnt); 335 del_timer(&conn->disc_timer); 336 } 337 338 static inline void hci_conn_put(struct hci_conn *conn) 339 { 340 if (atomic_dec_and_test(&conn->refcnt)) { 341 unsigned long timeo; 342 if (conn->type == ACL_LINK) { 343 del_timer(&conn->idle_timer); 344 if (conn->state == BT_CONNECTED) { 345 timeo = msecs_to_jiffies(HCI_DISCONN_TIMEOUT); 346 if (!conn->out) 347 timeo *= 2; 348 } else 349 timeo = msecs_to_jiffies(10); 350 } else 351 timeo = msecs_to_jiffies(10); 352 mod_timer(&conn->disc_timer, jiffies + timeo); 353 } 354 } 355 356 /* ----- HCI tasks ----- */ 357 static inline void hci_sched_cmd(struct hci_dev *hdev) 358 { 359 tasklet_schedule(&hdev->cmd_task); 360 } 361 362 static inline void hci_sched_rx(struct hci_dev *hdev) 363 { 364 tasklet_schedule(&hdev->rx_task); 365 } 366 367 static inline void hci_sched_tx(struct hci_dev *hdev) 368 { 369 tasklet_schedule(&hdev->tx_task); 370 } 371 372 /* ----- HCI Devices ----- */ 373 static inline void __hci_dev_put(struct hci_dev *d) 374 { 375 if (atomic_dec_and_test(&d->refcnt)) 376 d->destruct(d); 377 } 378 379 static inline void hci_dev_put(struct hci_dev *d) 380 { 381 __hci_dev_put(d); 382 module_put(d->owner); 383 } 384 385 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d) 386 { 387 atomic_inc(&d->refcnt); 388 return d; 389 } 390 391 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 392 { 393 if (try_module_get(d->owner)) 394 return __hci_dev_hold(d); 395 return NULL; 396 } 397 398 #define hci_dev_lock(d) spin_lock(&d->lock) 399 #define hci_dev_unlock(d) spin_unlock(&d->lock) 400 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock) 401 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock) 402 403 struct hci_dev *hci_dev_get(int index); 404 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst); 405 406 struct hci_dev *hci_alloc_dev(void); 407 void hci_free_dev(struct hci_dev *hdev); 408 int hci_register_dev(struct hci_dev *hdev); 409 int hci_unregister_dev(struct hci_dev *hdev); 410 int hci_suspend_dev(struct hci_dev *hdev); 411 int hci_resume_dev(struct hci_dev *hdev); 412 int hci_dev_open(__u16 dev); 413 int hci_dev_close(__u16 dev); 414 int hci_dev_reset(__u16 dev); 415 int hci_dev_reset_stat(__u16 dev); 416 int hci_dev_cmd(unsigned int cmd, void __user *arg); 417 int hci_get_dev_list(void __user *arg); 418 int hci_get_dev_info(void __user *arg); 419 int hci_get_conn_list(void __user *arg); 420 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 421 int hci_inquiry(void __user *arg); 422 423 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 424 425 /* Receive frame from HCI drivers */ 426 static inline int hci_recv_frame(struct sk_buff *skb) 427 { 428 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 429 if (!hdev || (!test_bit(HCI_UP, &hdev->flags) 430 && !test_bit(HCI_INIT, &hdev->flags))) { 431 kfree_skb(skb); 432 return -ENXIO; 433 } 434 435 /* Incomming skb */ 436 bt_cb(skb)->incoming = 1; 437 438 /* Time stamp */ 439 __net_timestamp(skb); 440 441 /* Queue frame for rx task */ 442 skb_queue_tail(&hdev->rx_q, skb); 443 hci_sched_rx(hdev); 444 return 0; 445 } 446 447 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count); 448 449 int hci_register_sysfs(struct hci_dev *hdev); 450 void hci_unregister_sysfs(struct hci_dev *hdev); 451 void hci_conn_add_sysfs(struct hci_conn *conn); 452 void hci_conn_del_sysfs(struct hci_conn *conn); 453 454 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev)) 455 456 /* ----- LMP capabilities ----- */ 457 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH) 458 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT) 459 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF) 460 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR) 461 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO) 462 463 /* ----- HCI protocols ----- */ 464 struct hci_proto { 465 char *name; 466 unsigned int id; 467 unsigned long flags; 468 469 void *priv; 470 471 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type); 472 int (*connect_cfm) (struct hci_conn *conn, __u8 status); 473 int (*disconn_ind) (struct hci_conn *conn, __u8 reason); 474 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags); 475 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb); 476 int (*auth_cfm) (struct hci_conn *conn, __u8 status); 477 int (*encrypt_cfm) (struct hci_conn *conn, __u8 status); 478 }; 479 480 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type) 481 { 482 register struct hci_proto *hp; 483 int mask = 0; 484 485 hp = hci_proto[HCI_PROTO_L2CAP]; 486 if (hp && hp->connect_ind) 487 mask |= hp->connect_ind(hdev, bdaddr, type); 488 489 hp = hci_proto[HCI_PROTO_SCO]; 490 if (hp && hp->connect_ind) 491 mask |= hp->connect_ind(hdev, bdaddr, type); 492 493 return mask; 494 } 495 496 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status) 497 { 498 register struct hci_proto *hp; 499 500 hp = hci_proto[HCI_PROTO_L2CAP]; 501 if (hp && hp->connect_cfm) 502 hp->connect_cfm(conn, status); 503 504 hp = hci_proto[HCI_PROTO_SCO]; 505 if (hp && hp->connect_cfm) 506 hp->connect_cfm(conn, status); 507 } 508 509 static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason) 510 { 511 register struct hci_proto *hp; 512 513 hp = hci_proto[HCI_PROTO_L2CAP]; 514 if (hp && hp->disconn_ind) 515 hp->disconn_ind(conn, reason); 516 517 hp = hci_proto[HCI_PROTO_SCO]; 518 if (hp && hp->disconn_ind) 519 hp->disconn_ind(conn, reason); 520 } 521 522 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status) 523 { 524 register struct hci_proto *hp; 525 526 hp = hci_proto[HCI_PROTO_L2CAP]; 527 if (hp && hp->auth_cfm) 528 hp->auth_cfm(conn, status); 529 530 hp = hci_proto[HCI_PROTO_SCO]; 531 if (hp && hp->auth_cfm) 532 hp->auth_cfm(conn, status); 533 } 534 535 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status) 536 { 537 register struct hci_proto *hp; 538 539 hp = hci_proto[HCI_PROTO_L2CAP]; 540 if (hp && hp->encrypt_cfm) 541 hp->encrypt_cfm(conn, status); 542 543 hp = hci_proto[HCI_PROTO_SCO]; 544 if (hp && hp->encrypt_cfm) 545 hp->encrypt_cfm(conn, status); 546 } 547 548 int hci_register_proto(struct hci_proto *hproto); 549 int hci_unregister_proto(struct hci_proto *hproto); 550 551 /* ----- HCI callbacks ----- */ 552 struct hci_cb { 553 struct list_head list; 554 555 char *name; 556 557 void (*auth_cfm) (struct hci_conn *conn, __u8 status); 558 void (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt); 559 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 560 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 561 }; 562 563 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 564 { 565 struct list_head *p; 566 567 hci_proto_auth_cfm(conn, status); 568 569 read_lock_bh(&hci_cb_list_lock); 570 list_for_each(p, &hci_cb_list) { 571 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 572 if (cb->auth_cfm) 573 cb->auth_cfm(conn, status); 574 } 575 read_unlock_bh(&hci_cb_list_lock); 576 } 577 578 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt) 579 { 580 struct list_head *p; 581 582 hci_proto_encrypt_cfm(conn, status); 583 584 read_lock_bh(&hci_cb_list_lock); 585 list_for_each(p, &hci_cb_list) { 586 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 587 if (cb->encrypt_cfm) 588 cb->encrypt_cfm(conn, status, encrypt); 589 } 590 read_unlock_bh(&hci_cb_list_lock); 591 } 592 593 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 594 { 595 struct list_head *p; 596 597 read_lock_bh(&hci_cb_list_lock); 598 list_for_each(p, &hci_cb_list) { 599 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 600 if (cb->key_change_cfm) 601 cb->key_change_cfm(conn, status); 602 } 603 read_unlock_bh(&hci_cb_list_lock); 604 } 605 606 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role) 607 { 608 struct list_head *p; 609 610 read_lock_bh(&hci_cb_list_lock); 611 list_for_each(p, &hci_cb_list) { 612 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 613 if (cb->role_switch_cfm) 614 cb->role_switch_cfm(conn, status, role); 615 } 616 read_unlock_bh(&hci_cb_list_lock); 617 } 618 619 int hci_register_cb(struct hci_cb *hcb); 620 int hci_unregister_cb(struct hci_cb *hcb); 621 622 int hci_register_notifier(struct notifier_block *nb); 623 int hci_unregister_notifier(struct notifier_block *nb); 624 625 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param); 626 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags); 627 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 628 629 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 630 631 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data); 632 633 /* ----- HCI Sockets ----- */ 634 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 635 636 /* HCI info for socket */ 637 #define hci_pi(sk) ((struct hci_pinfo *) sk) 638 639 struct hci_pinfo { 640 struct bt_sock bt; 641 struct hci_dev *hdev; 642 struct hci_filter filter; 643 __u32 cmsg_mask; 644 }; 645 646 /* HCI security filter */ 647 #define HCI_SFLT_MAX_OGF 5 648 649 struct hci_sec_filter { 650 __u32 type_mask; 651 __u32 event_mask[2]; 652 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; 653 }; 654 655 /* ----- HCI requests ----- */ 656 #define HCI_REQ_DONE 0 657 #define HCI_REQ_PEND 1 658 #define HCI_REQ_CANCELED 2 659 660 #define hci_req_lock(d) down(&d->req_lock) 661 #define hci_req_unlock(d) up(&d->req_lock) 662 663 void hci_req_complete(struct hci_dev *hdev, int result); 664 665 #endif /* __HCI_CORE_H */ 666