1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 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 <linux/interrupt.h> 29 #include <net/bluetooth/hci.h> 30 31 /* HCI priority */ 32 #define HCI_PRIO_MAX 7 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 __u8 ssp_mode; 44 }; 45 46 struct inquiry_entry { 47 struct list_head all; /* inq_cache.all */ 48 struct list_head list; /* unknown or resolve */ 49 enum { 50 NAME_NOT_KNOWN, 51 NAME_NEEDED, 52 NAME_PENDING, 53 NAME_KNOWN, 54 } name_state; 55 __u32 timestamp; 56 struct inquiry_data data; 57 }; 58 59 struct discovery_state { 60 int type; 61 enum { 62 DISCOVERY_STOPPED, 63 DISCOVERY_STARTING, 64 DISCOVERY_FINDING, 65 DISCOVERY_RESOLVING, 66 DISCOVERY_STOPPING, 67 } state; 68 struct list_head all; /* All devices found during inquiry */ 69 struct list_head unknown; /* Name state not known */ 70 struct list_head resolve; /* Name needs to be resolved */ 71 __u32 timestamp; 72 }; 73 74 struct hci_conn_hash { 75 struct list_head list; 76 unsigned int acl_num; 77 unsigned int sco_num; 78 unsigned int le_num; 79 }; 80 81 struct bdaddr_list { 82 struct list_head list; 83 bdaddr_t bdaddr; 84 }; 85 86 struct bt_uuid { 87 struct list_head list; 88 u8 uuid[16]; 89 u8 svc_hint; 90 }; 91 92 struct smp_ltk { 93 struct list_head list; 94 bdaddr_t bdaddr; 95 u8 bdaddr_type; 96 u8 authenticated; 97 u8 type; 98 u8 enc_size; 99 __le16 ediv; 100 u8 rand[8]; 101 u8 val[16]; 102 } __packed; 103 104 struct link_key { 105 struct list_head list; 106 bdaddr_t bdaddr; 107 u8 type; 108 u8 val[16]; 109 u8 pin_len; 110 }; 111 112 struct oob_data { 113 struct list_head list; 114 bdaddr_t bdaddr; 115 u8 hash[16]; 116 u8 randomizer[16]; 117 }; 118 119 struct adv_entry { 120 struct list_head list; 121 bdaddr_t bdaddr; 122 u8 bdaddr_type; 123 }; 124 125 struct le_scan_params { 126 u8 type; 127 u16 interval; 128 u16 window; 129 int timeout; 130 }; 131 132 #define HCI_MAX_SHORT_NAME_LENGTH 10 133 134 #define NUM_REASSEMBLY 4 135 struct hci_dev { 136 struct list_head list; 137 struct mutex lock; 138 139 char name[8]; 140 unsigned long flags; 141 __u16 id; 142 __u8 bus; 143 __u8 dev_type; 144 bdaddr_t bdaddr; 145 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 146 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 147 __u8 eir[HCI_MAX_EIR_LENGTH]; 148 __u8 dev_class[3]; 149 __u8 major_class; 150 __u8 minor_class; 151 __u8 features[8]; 152 __u8 host_features[8]; 153 __u8 commands[64]; 154 __u8 hci_ver; 155 __u16 hci_rev; 156 __u8 lmp_ver; 157 __u16 manufacturer; 158 __le16 lmp_subver; 159 __u16 voice_setting; 160 __u8 io_capability; 161 162 __u16 pkt_type; 163 __u16 esco_type; 164 __u16 link_policy; 165 __u16 link_mode; 166 167 __u32 idle_timeout; 168 __u16 sniff_min_interval; 169 __u16 sniff_max_interval; 170 171 __u8 amp_status; 172 __u32 amp_total_bw; 173 __u32 amp_max_bw; 174 __u32 amp_min_latency; 175 __u32 amp_max_pdu; 176 __u8 amp_type; 177 __u16 amp_pal_cap; 178 __u16 amp_assoc_size; 179 __u32 amp_max_flush_to; 180 __u32 amp_be_flush_to; 181 182 __u8 flow_ctl_mode; 183 184 unsigned int auto_accept_delay; 185 186 unsigned long quirks; 187 188 atomic_t cmd_cnt; 189 unsigned int acl_cnt; 190 unsigned int sco_cnt; 191 unsigned int le_cnt; 192 193 unsigned int acl_mtu; 194 unsigned int sco_mtu; 195 unsigned int le_mtu; 196 unsigned int acl_pkts; 197 unsigned int sco_pkts; 198 unsigned int le_pkts; 199 200 __u16 block_len; 201 __u16 block_mtu; 202 __u16 num_blocks; 203 __u16 block_cnt; 204 205 unsigned long acl_last_tx; 206 unsigned long sco_last_tx; 207 unsigned long le_last_tx; 208 209 struct workqueue_struct *workqueue; 210 211 struct work_struct power_on; 212 struct delayed_work power_off; 213 214 __u16 discov_timeout; 215 struct delayed_work discov_off; 216 217 struct delayed_work service_cache; 218 219 struct timer_list cmd_timer; 220 221 struct work_struct rx_work; 222 struct work_struct cmd_work; 223 struct work_struct tx_work; 224 225 struct sk_buff_head rx_q; 226 struct sk_buff_head raw_q; 227 struct sk_buff_head cmd_q; 228 229 struct sk_buff *sent_cmd; 230 struct sk_buff *reassembly[NUM_REASSEMBLY]; 231 232 struct mutex req_lock; 233 wait_queue_head_t req_wait_q; 234 __u32 req_status; 235 __u32 req_result; 236 237 __u16 init_last_cmd; 238 239 struct list_head mgmt_pending; 240 241 struct discovery_state discovery; 242 struct hci_conn_hash conn_hash; 243 struct list_head blacklist; 244 245 struct list_head uuids; 246 247 struct list_head link_keys; 248 249 struct list_head long_term_keys; 250 251 struct list_head remote_oob_data; 252 253 struct list_head adv_entries; 254 struct delayed_work adv_work; 255 256 struct hci_dev_stats stat; 257 258 struct sk_buff_head driver_init; 259 260 void *core_data; 261 262 atomic_t promisc; 263 264 struct dentry *debugfs; 265 266 struct device *parent; 267 struct device dev; 268 269 struct rfkill *rfkill; 270 271 unsigned long dev_flags; 272 273 struct delayed_work le_scan_disable; 274 275 struct work_struct le_scan; 276 struct le_scan_params le_scan_params; 277 278 int (*open)(struct hci_dev *hdev); 279 int (*close)(struct hci_dev *hdev); 280 int (*flush)(struct hci_dev *hdev); 281 int (*send)(struct sk_buff *skb); 282 void (*notify)(struct hci_dev *hdev, unsigned int evt); 283 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg); 284 }; 285 286 struct hci_conn { 287 struct list_head list; 288 289 atomic_t refcnt; 290 291 bdaddr_t dst; 292 __u8 dst_type; 293 __u16 handle; 294 __u16 state; 295 __u8 mode; 296 __u8 type; 297 bool out; 298 __u8 attempt; 299 __u8 dev_class[3]; 300 __u8 features[8]; 301 __u16 interval; 302 __u16 pkt_type; 303 __u16 link_policy; 304 __u32 link_mode; 305 __u8 key_type; 306 __u8 auth_type; 307 __u8 sec_level; 308 __u8 pending_sec_level; 309 __u8 pin_length; 310 __u8 enc_key_size; 311 __u8 io_capability; 312 __u16 disc_timeout; 313 unsigned long flags; 314 315 __u8 remote_cap; 316 __u8 remote_auth; 317 318 unsigned int sent; 319 320 struct sk_buff_head data_q; 321 struct list_head chan_list; 322 323 struct delayed_work disc_work; 324 struct timer_list idle_timer; 325 struct timer_list auto_accept_timer; 326 327 struct device dev; 328 atomic_t devref; 329 330 struct hci_dev *hdev; 331 void *l2cap_data; 332 void *sco_data; 333 void *smp_conn; 334 335 struct hci_conn *link; 336 337 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 338 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 339 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 340 }; 341 342 struct hci_chan { 343 struct list_head list; 344 345 struct hci_conn *conn; 346 struct sk_buff_head data_q; 347 unsigned int sent; 348 }; 349 350 extern struct list_head hci_dev_list; 351 extern struct list_head hci_cb_list; 352 extern rwlock_t hci_dev_list_lock; 353 extern rwlock_t hci_cb_list_lock; 354 355 /* ----- HCI interface to upper protocols ----- */ 356 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 357 extern int l2cap_connect_cfm(struct hci_conn *hcon, u8 status); 358 extern int l2cap_disconn_ind(struct hci_conn *hcon); 359 extern int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason); 360 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt); 361 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 362 363 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 364 extern int sco_connect_cfm(struct hci_conn *hcon, __u8 status); 365 extern int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason); 366 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 367 368 /* ----- Inquiry cache ----- */ 369 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 370 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 371 372 static inline void discovery_init(struct hci_dev *hdev) 373 { 374 hdev->discovery.state = DISCOVERY_STOPPED; 375 INIT_LIST_HEAD(&hdev->discovery.all); 376 INIT_LIST_HEAD(&hdev->discovery.unknown); 377 INIT_LIST_HEAD(&hdev->discovery.resolve); 378 } 379 380 bool hci_discovery_active(struct hci_dev *hdev); 381 382 void hci_discovery_set_state(struct hci_dev *hdev, int state); 383 384 static inline int inquiry_cache_empty(struct hci_dev *hdev) 385 { 386 return list_empty(&hdev->discovery.all); 387 } 388 389 static inline long inquiry_cache_age(struct hci_dev *hdev) 390 { 391 struct discovery_state *c = &hdev->discovery; 392 return jiffies - c->timestamp; 393 } 394 395 static inline long inquiry_entry_age(struct inquiry_entry *e) 396 { 397 return jiffies - e->timestamp; 398 } 399 400 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 401 bdaddr_t *bdaddr); 402 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 403 bdaddr_t *bdaddr); 404 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 405 bdaddr_t *bdaddr, 406 int state); 407 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 408 struct inquiry_entry *ie); 409 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 410 bool name_known, bool *ssp); 411 412 /* ----- HCI Connections ----- */ 413 enum { 414 HCI_CONN_AUTH_PEND, 415 HCI_CONN_REAUTH_PEND, 416 HCI_CONN_ENCRYPT_PEND, 417 HCI_CONN_RSWITCH_PEND, 418 HCI_CONN_MODE_CHANGE_PEND, 419 HCI_CONN_SCO_SETUP_PEND, 420 HCI_CONN_LE_SMP_PEND, 421 HCI_CONN_MGMT_CONNECTED, 422 HCI_CONN_SSP_ENABLED, 423 HCI_CONN_POWER_SAVE, 424 HCI_CONN_REMOTE_OOB, 425 }; 426 427 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 428 { 429 struct hci_dev *hdev = conn->hdev; 430 return (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) && 431 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags)); 432 } 433 434 static inline void hci_conn_hash_init(struct hci_dev *hdev) 435 { 436 struct hci_conn_hash *h = &hdev->conn_hash; 437 INIT_LIST_HEAD(&h->list); 438 h->acl_num = 0; 439 h->sco_num = 0; 440 h->le_num = 0; 441 } 442 443 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 444 { 445 struct hci_conn_hash *h = &hdev->conn_hash; 446 list_add_rcu(&c->list, &h->list); 447 switch (c->type) { 448 case ACL_LINK: 449 h->acl_num++; 450 break; 451 case LE_LINK: 452 h->le_num++; 453 break; 454 case SCO_LINK: 455 case ESCO_LINK: 456 h->sco_num++; 457 break; 458 } 459 } 460 461 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 462 { 463 struct hci_conn_hash *h = &hdev->conn_hash; 464 465 list_del_rcu(&c->list); 466 synchronize_rcu(); 467 468 switch (c->type) { 469 case ACL_LINK: 470 h->acl_num--; 471 break; 472 case LE_LINK: 473 h->le_num--; 474 break; 475 case SCO_LINK: 476 case ESCO_LINK: 477 h->sco_num--; 478 break; 479 } 480 } 481 482 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 483 { 484 struct hci_conn_hash *h = &hdev->conn_hash; 485 switch (type) { 486 case ACL_LINK: 487 return h->acl_num; 488 case LE_LINK: 489 return h->le_num; 490 case SCO_LINK: 491 case ESCO_LINK: 492 return h->sco_num; 493 default: 494 return 0; 495 } 496 } 497 498 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 499 __u16 handle) 500 { 501 struct hci_conn_hash *h = &hdev->conn_hash; 502 struct hci_conn *c; 503 504 rcu_read_lock(); 505 506 list_for_each_entry_rcu(c, &h->list, list) { 507 if (c->handle == handle) { 508 rcu_read_unlock(); 509 return c; 510 } 511 } 512 rcu_read_unlock(); 513 514 return NULL; 515 } 516 517 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 518 __u8 type, bdaddr_t *ba) 519 { 520 struct hci_conn_hash *h = &hdev->conn_hash; 521 struct hci_conn *c; 522 523 rcu_read_lock(); 524 525 list_for_each_entry_rcu(c, &h->list, list) { 526 if (c->type == type && !bacmp(&c->dst, ba)) { 527 rcu_read_unlock(); 528 return c; 529 } 530 } 531 532 rcu_read_unlock(); 533 534 return NULL; 535 } 536 537 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 538 __u8 type, __u16 state) 539 { 540 struct hci_conn_hash *h = &hdev->conn_hash; 541 struct hci_conn *c; 542 543 rcu_read_lock(); 544 545 list_for_each_entry_rcu(c, &h->list, list) { 546 if (c->type == type && c->state == state) { 547 rcu_read_unlock(); 548 return c; 549 } 550 } 551 552 rcu_read_unlock(); 553 554 return NULL; 555 } 556 557 void hci_acl_connect(struct hci_conn *conn); 558 void hci_acl_disconn(struct hci_conn *conn, __u8 reason); 559 void hci_add_sco(struct hci_conn *conn, __u16 handle); 560 void hci_setup_sync(struct hci_conn *conn, __u16 handle); 561 void hci_sco_setup(struct hci_conn *conn, __u8 status); 562 563 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst); 564 int hci_conn_del(struct hci_conn *conn); 565 void hci_conn_hash_flush(struct hci_dev *hdev); 566 void hci_conn_check_pending(struct hci_dev *hdev); 567 568 struct hci_chan *hci_chan_create(struct hci_conn *conn); 569 int hci_chan_del(struct hci_chan *chan); 570 void hci_chan_list_flush(struct hci_conn *conn); 571 572 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, 573 __u8 sec_level, __u8 auth_type); 574 int hci_conn_check_link_mode(struct hci_conn *conn); 575 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 576 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type); 577 int hci_conn_change_link_key(struct hci_conn *conn); 578 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 579 580 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 581 582 void hci_conn_hold_device(struct hci_conn *conn); 583 void hci_conn_put_device(struct hci_conn *conn); 584 585 static inline void hci_conn_hold(struct hci_conn *conn) 586 { 587 atomic_inc(&conn->refcnt); 588 cancel_delayed_work(&conn->disc_work); 589 } 590 591 static inline void hci_conn_put(struct hci_conn *conn) 592 { 593 if (atomic_dec_and_test(&conn->refcnt)) { 594 unsigned long timeo; 595 if (conn->type == ACL_LINK || conn->type == LE_LINK) { 596 del_timer(&conn->idle_timer); 597 if (conn->state == BT_CONNECTED) { 598 timeo = msecs_to_jiffies(conn->disc_timeout); 599 if (!conn->out) 600 timeo *= 2; 601 } else { 602 timeo = msecs_to_jiffies(10); 603 } 604 } else { 605 timeo = msecs_to_jiffies(10); 606 } 607 cancel_delayed_work(&conn->disc_work); 608 queue_delayed_work(conn->hdev->workqueue, 609 &conn->disc_work, timeo); 610 } 611 } 612 613 /* ----- HCI Devices ----- */ 614 static inline void hci_dev_put(struct hci_dev *d) 615 { 616 put_device(&d->dev); 617 } 618 619 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 620 { 621 get_device(&d->dev); 622 return d; 623 } 624 625 #define hci_dev_lock(d) mutex_lock(&d->lock) 626 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 627 628 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 629 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 630 631 static inline void *hci_get_drvdata(struct hci_dev *hdev) 632 { 633 return dev_get_drvdata(&hdev->dev); 634 } 635 636 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 637 { 638 dev_set_drvdata(&hdev->dev, data); 639 } 640 641 struct hci_dev *hci_dev_get(int index); 642 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst); 643 644 struct hci_dev *hci_alloc_dev(void); 645 void hci_free_dev(struct hci_dev *hdev); 646 int hci_register_dev(struct hci_dev *hdev); 647 void hci_unregister_dev(struct hci_dev *hdev); 648 int hci_suspend_dev(struct hci_dev *hdev); 649 int hci_resume_dev(struct hci_dev *hdev); 650 int hci_dev_open(__u16 dev); 651 int hci_dev_close(__u16 dev); 652 int hci_dev_reset(__u16 dev); 653 int hci_dev_reset_stat(__u16 dev); 654 int hci_dev_cmd(unsigned int cmd, void __user *arg); 655 int hci_get_dev_list(void __user *arg); 656 int hci_get_dev_info(void __user *arg); 657 int hci_get_conn_list(void __user *arg); 658 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 659 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 660 int hci_inquiry(void __user *arg); 661 662 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr); 663 int hci_blacklist_clear(struct hci_dev *hdev); 664 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 665 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 666 667 int hci_uuids_clear(struct hci_dev *hdev); 668 669 int hci_link_keys_clear(struct hci_dev *hdev); 670 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 671 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, 672 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len); 673 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]); 674 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, 675 int new_key, u8 authenticated, u8 tk[16], u8 enc_size, u16 ediv, 676 u8 rand[8]); 677 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 678 u8 addr_type); 679 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr); 680 int hci_smp_ltks_clear(struct hci_dev *hdev); 681 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 682 683 int hci_remote_oob_data_clear(struct hci_dev *hdev); 684 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 685 bdaddr_t *bdaddr); 686 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, 687 u8 *randomizer); 688 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr); 689 690 #define ADV_CLEAR_TIMEOUT (3*60*HZ) /* Three minutes */ 691 int hci_adv_entries_clear(struct hci_dev *hdev); 692 struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr); 693 int hci_add_adv_entry(struct hci_dev *hdev, 694 struct hci_ev_le_advertising_info *ev); 695 696 void hci_del_off_timer(struct hci_dev *hdev); 697 698 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 699 700 int hci_recv_frame(struct sk_buff *skb); 701 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count); 702 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count); 703 704 void hci_init_sysfs(struct hci_dev *hdev); 705 int hci_add_sysfs(struct hci_dev *hdev); 706 void hci_del_sysfs(struct hci_dev *hdev); 707 void hci_conn_init_sysfs(struct hci_conn *conn); 708 void hci_conn_add_sysfs(struct hci_conn *conn); 709 void hci_conn_del_sysfs(struct hci_conn *conn); 710 711 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev)) 712 713 /* ----- LMP capabilities ----- */ 714 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH) 715 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT) 716 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF) 717 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR) 718 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO) 719 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR) 720 #define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH) 721 #define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE) 722 #define lmp_bredr_capable(dev) (!((dev)->features[4] & LMP_NO_BREDR)) 723 724 /* ----- Extended LMP capabilities ----- */ 725 #define lmp_host_le_capable(dev) ((dev)->host_features[0] & LMP_HOST_LE) 726 727 /* ----- HCI protocols ----- */ 728 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 729 __u8 type) 730 { 731 switch (type) { 732 case ACL_LINK: 733 return l2cap_connect_ind(hdev, bdaddr); 734 735 case SCO_LINK: 736 case ESCO_LINK: 737 return sco_connect_ind(hdev, bdaddr); 738 739 default: 740 BT_ERR("unknown link type %d", type); 741 return -EINVAL; 742 } 743 } 744 745 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status) 746 { 747 switch (conn->type) { 748 case ACL_LINK: 749 case LE_LINK: 750 l2cap_connect_cfm(conn, status); 751 break; 752 753 case SCO_LINK: 754 case ESCO_LINK: 755 sco_connect_cfm(conn, status); 756 break; 757 758 default: 759 BT_ERR("unknown link type %d", conn->type); 760 break; 761 } 762 763 if (conn->connect_cfm_cb) 764 conn->connect_cfm_cb(conn, status); 765 } 766 767 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 768 { 769 if (conn->type != ACL_LINK && conn->type != LE_LINK) 770 return HCI_ERROR_REMOTE_USER_TERM; 771 772 return l2cap_disconn_ind(conn); 773 } 774 775 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason) 776 { 777 switch (conn->type) { 778 case ACL_LINK: 779 case LE_LINK: 780 l2cap_disconn_cfm(conn, reason); 781 break; 782 783 case SCO_LINK: 784 case ESCO_LINK: 785 sco_disconn_cfm(conn, reason); 786 break; 787 788 default: 789 BT_ERR("unknown link type %d", conn->type); 790 break; 791 } 792 793 if (conn->disconn_cfm_cb) 794 conn->disconn_cfm_cb(conn, reason); 795 } 796 797 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status) 798 { 799 __u8 encrypt; 800 801 if (conn->type != ACL_LINK && conn->type != LE_LINK) 802 return; 803 804 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 805 return; 806 807 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00; 808 l2cap_security_cfm(conn, status, encrypt); 809 810 if (conn->security_cfm_cb) 811 conn->security_cfm_cb(conn, status); 812 } 813 814 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, 815 __u8 encrypt) 816 { 817 if (conn->type != ACL_LINK && conn->type != LE_LINK) 818 return; 819 820 l2cap_security_cfm(conn, status, encrypt); 821 822 if (conn->security_cfm_cb) 823 conn->security_cfm_cb(conn, status); 824 } 825 826 /* ----- HCI callbacks ----- */ 827 struct hci_cb { 828 struct list_head list; 829 830 char *name; 831 832 void (*security_cfm) (struct hci_conn *conn, __u8 status, 833 __u8 encrypt); 834 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 835 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 836 }; 837 838 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 839 { 840 struct list_head *p; 841 __u8 encrypt; 842 843 hci_proto_auth_cfm(conn, status); 844 845 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 846 return; 847 848 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00; 849 850 read_lock(&hci_cb_list_lock); 851 list_for_each(p, &hci_cb_list) { 852 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 853 if (cb->security_cfm) 854 cb->security_cfm(conn, status, encrypt); 855 } 856 read_unlock(&hci_cb_list_lock); 857 } 858 859 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, 860 __u8 encrypt) 861 { 862 struct list_head *p; 863 864 if (conn->sec_level == BT_SECURITY_SDP) 865 conn->sec_level = BT_SECURITY_LOW; 866 867 if (conn->pending_sec_level > conn->sec_level) 868 conn->sec_level = conn->pending_sec_level; 869 870 hci_proto_encrypt_cfm(conn, status, encrypt); 871 872 read_lock(&hci_cb_list_lock); 873 list_for_each(p, &hci_cb_list) { 874 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 875 if (cb->security_cfm) 876 cb->security_cfm(conn, status, encrypt); 877 } 878 read_unlock(&hci_cb_list_lock); 879 } 880 881 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 882 { 883 struct list_head *p; 884 885 read_lock(&hci_cb_list_lock); 886 list_for_each(p, &hci_cb_list) { 887 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 888 if (cb->key_change_cfm) 889 cb->key_change_cfm(conn, status); 890 } 891 read_unlock(&hci_cb_list_lock); 892 } 893 894 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 895 __u8 role) 896 { 897 struct list_head *p; 898 899 read_lock(&hci_cb_list_lock); 900 list_for_each(p, &hci_cb_list) { 901 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 902 if (cb->role_switch_cfm) 903 cb->role_switch_cfm(conn, status, role); 904 } 905 read_unlock(&hci_cb_list_lock); 906 } 907 908 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type) 909 { 910 size_t parsed = 0; 911 912 if (data_len < 2) 913 return false; 914 915 while (parsed < data_len - 1) { 916 u8 field_len = data[0]; 917 918 if (field_len == 0) 919 break; 920 921 parsed += field_len + 1; 922 923 if (parsed > data_len) 924 break; 925 926 if (data[1] == type) 927 return true; 928 929 data += field_len + 1; 930 } 931 932 return false; 933 } 934 935 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data, 936 u8 data_len) 937 { 938 eir[eir_len++] = sizeof(type) + data_len; 939 eir[eir_len++] = type; 940 memcpy(&eir[eir_len], data, data_len); 941 eir_len += data_len; 942 943 return eir_len; 944 } 945 946 int hci_register_cb(struct hci_cb *hcb); 947 int hci_unregister_cb(struct hci_cb *hcb); 948 949 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param); 950 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 951 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 952 953 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 954 955 /* ----- HCI Sockets ----- */ 956 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 957 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk); 958 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 959 960 void hci_sock_dev_event(struct hci_dev *hdev, int event); 961 962 /* Management interface */ 963 #define MGMT_ADDR_BREDR 0x00 964 #define MGMT_ADDR_LE_PUBLIC 0x01 965 #define MGMT_ADDR_LE_RANDOM 0x02 966 #define MGMT_ADDR_INVALID 0xff 967 968 #define DISCOV_TYPE_BREDR (BIT(MGMT_ADDR_BREDR)) 969 #define DISCOV_TYPE_LE (BIT(MGMT_ADDR_LE_PUBLIC) | \ 970 BIT(MGMT_ADDR_LE_RANDOM)) 971 #define DISCOV_TYPE_INTERLEAVED (BIT(MGMT_ADDR_BREDR) | \ 972 BIT(MGMT_ADDR_LE_PUBLIC) | \ 973 BIT(MGMT_ADDR_LE_RANDOM)) 974 975 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len); 976 int mgmt_index_added(struct hci_dev *hdev); 977 int mgmt_index_removed(struct hci_dev *hdev); 978 int mgmt_powered(struct hci_dev *hdev, u8 powered); 979 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable); 980 int mgmt_connectable(struct hci_dev *hdev, u8 connectable); 981 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status); 982 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 983 u8 persistent); 984 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 985 u8 addr_type, u32 flags, u8 *name, u8 name_len, 986 u8 *dev_class); 987 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 988 u8 link_type, u8 addr_type); 989 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 990 u8 link_type, u8 addr_type, u8 status); 991 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 992 u8 addr_type, u8 status); 993 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 994 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 995 u8 status); 996 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 997 u8 status); 998 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 999 u8 link_type, u8 addr_type, __le32 value, 1000 u8 confirm_hint); 1001 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1002 u8 link_type, u8 addr_type, u8 status); 1003 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1004 u8 link_type, u8 addr_type, u8 status); 1005 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1006 u8 link_type, u8 addr_type); 1007 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1008 u8 link_type, u8 addr_type, u8 status); 1009 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1010 u8 link_type, u8 addr_type, u8 status); 1011 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1012 u8 addr_type, u8 status); 1013 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 1014 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1015 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 1016 u8 status); 1017 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 1018 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash, 1019 u8 *randomizer, u8 status); 1020 int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1021 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1022 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name, 1023 u8 ssp, u8 *eir, u16 eir_len); 1024 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1025 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 1026 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status); 1027 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status); 1028 int mgmt_discovering(struct hci_dev *hdev, u8 discovering); 1029 int mgmt_interleaved_discovery(struct hci_dev *hdev); 1030 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1031 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1032 1033 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent); 1034 1035 /* HCI info for socket */ 1036 #define hci_pi(sk) ((struct hci_pinfo *) sk) 1037 1038 struct hci_pinfo { 1039 struct bt_sock bt; 1040 struct hci_dev *hdev; 1041 struct hci_filter filter; 1042 __u32 cmsg_mask; 1043 unsigned short channel; 1044 }; 1045 1046 /* HCI security filter */ 1047 #define HCI_SFLT_MAX_OGF 5 1048 1049 struct hci_sec_filter { 1050 __u32 type_mask; 1051 __u32 event_mask[2]; 1052 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; 1053 }; 1054 1055 /* ----- HCI requests ----- */ 1056 #define HCI_REQ_DONE 0 1057 #define HCI_REQ_PEND 1 1058 #define HCI_REQ_CANCELED 2 1059 1060 #define hci_req_lock(d) mutex_lock(&d->req_lock) 1061 #define hci_req_unlock(d) mutex_unlock(&d->req_lock) 1062 1063 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result); 1064 1065 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, 1066 u16 latency, u16 to_multiplier); 1067 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8], 1068 __u8 ltk[16]); 1069 void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]); 1070 void hci_le_ltk_neg_reply(struct hci_conn *conn); 1071 1072 int hci_do_inquiry(struct hci_dev *hdev, u8 length); 1073 int hci_cancel_inquiry(struct hci_dev *hdev); 1074 int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window, 1075 int timeout); 1076 1077 #endif /* __HCI_CORE_H */ 1078