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 bool flush_key; 318 319 unsigned int sent; 320 321 struct sk_buff_head data_q; 322 struct list_head chan_list; 323 324 struct delayed_work disc_work; 325 struct timer_list idle_timer; 326 struct timer_list auto_accept_timer; 327 328 struct device dev; 329 atomic_t devref; 330 331 struct hci_dev *hdev; 332 void *l2cap_data; 333 void *sco_data; 334 void *smp_conn; 335 336 struct hci_conn *link; 337 338 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 339 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 340 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 341 }; 342 343 struct hci_chan { 344 struct list_head list; 345 346 struct hci_conn *conn; 347 struct sk_buff_head data_q; 348 unsigned int sent; 349 }; 350 351 extern struct list_head hci_dev_list; 352 extern struct list_head hci_cb_list; 353 extern rwlock_t hci_dev_list_lock; 354 extern rwlock_t hci_cb_list_lock; 355 356 /* ----- HCI interface to upper protocols ----- */ 357 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 358 extern int l2cap_connect_cfm(struct hci_conn *hcon, u8 status); 359 extern int l2cap_disconn_ind(struct hci_conn *hcon); 360 extern int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason); 361 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt); 362 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 363 364 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 365 extern int sco_connect_cfm(struct hci_conn *hcon, __u8 status); 366 extern int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason); 367 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 368 369 /* ----- Inquiry cache ----- */ 370 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 371 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 372 373 static inline void discovery_init(struct hci_dev *hdev) 374 { 375 hdev->discovery.state = DISCOVERY_STOPPED; 376 INIT_LIST_HEAD(&hdev->discovery.all); 377 INIT_LIST_HEAD(&hdev->discovery.unknown); 378 INIT_LIST_HEAD(&hdev->discovery.resolve); 379 } 380 381 bool hci_discovery_active(struct hci_dev *hdev); 382 383 void hci_discovery_set_state(struct hci_dev *hdev, int state); 384 385 static inline int inquiry_cache_empty(struct hci_dev *hdev) 386 { 387 return list_empty(&hdev->discovery.all); 388 } 389 390 static inline long inquiry_cache_age(struct hci_dev *hdev) 391 { 392 struct discovery_state *c = &hdev->discovery; 393 return jiffies - c->timestamp; 394 } 395 396 static inline long inquiry_entry_age(struct inquiry_entry *e) 397 { 398 return jiffies - e->timestamp; 399 } 400 401 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 402 bdaddr_t *bdaddr); 403 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 404 bdaddr_t *bdaddr); 405 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 406 bdaddr_t *bdaddr, 407 int state); 408 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 409 struct inquiry_entry *ie); 410 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 411 bool name_known, bool *ssp); 412 413 /* ----- HCI Connections ----- */ 414 enum { 415 HCI_CONN_AUTH_PEND, 416 HCI_CONN_REAUTH_PEND, 417 HCI_CONN_ENCRYPT_PEND, 418 HCI_CONN_RSWITCH_PEND, 419 HCI_CONN_MODE_CHANGE_PEND, 420 HCI_CONN_SCO_SETUP_PEND, 421 HCI_CONN_LE_SMP_PEND, 422 HCI_CONN_MGMT_CONNECTED, 423 HCI_CONN_SSP_ENABLED, 424 HCI_CONN_POWER_SAVE, 425 HCI_CONN_REMOTE_OOB, 426 }; 427 428 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 429 { 430 struct hci_dev *hdev = conn->hdev; 431 return (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) && 432 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags)); 433 } 434 435 static inline void hci_conn_hash_init(struct hci_dev *hdev) 436 { 437 struct hci_conn_hash *h = &hdev->conn_hash; 438 INIT_LIST_HEAD(&h->list); 439 h->acl_num = 0; 440 h->sco_num = 0; 441 h->le_num = 0; 442 } 443 444 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 445 { 446 struct hci_conn_hash *h = &hdev->conn_hash; 447 list_add_rcu(&c->list, &h->list); 448 switch (c->type) { 449 case ACL_LINK: 450 h->acl_num++; 451 break; 452 case LE_LINK: 453 h->le_num++; 454 break; 455 case SCO_LINK: 456 case ESCO_LINK: 457 h->sco_num++; 458 break; 459 } 460 } 461 462 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 463 { 464 struct hci_conn_hash *h = &hdev->conn_hash; 465 466 list_del_rcu(&c->list); 467 synchronize_rcu(); 468 469 switch (c->type) { 470 case ACL_LINK: 471 h->acl_num--; 472 break; 473 case LE_LINK: 474 h->le_num--; 475 break; 476 case SCO_LINK: 477 case ESCO_LINK: 478 h->sco_num--; 479 break; 480 } 481 } 482 483 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 484 { 485 struct hci_conn_hash *h = &hdev->conn_hash; 486 switch (type) { 487 case ACL_LINK: 488 return h->acl_num; 489 case LE_LINK: 490 return h->le_num; 491 case SCO_LINK: 492 case ESCO_LINK: 493 return h->sco_num; 494 default: 495 return 0; 496 } 497 } 498 499 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 500 __u16 handle) 501 { 502 struct hci_conn_hash *h = &hdev->conn_hash; 503 struct hci_conn *c; 504 505 rcu_read_lock(); 506 507 list_for_each_entry_rcu(c, &h->list, list) { 508 if (c->handle == handle) { 509 rcu_read_unlock(); 510 return c; 511 } 512 } 513 rcu_read_unlock(); 514 515 return NULL; 516 } 517 518 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 519 __u8 type, bdaddr_t *ba) 520 { 521 struct hci_conn_hash *h = &hdev->conn_hash; 522 struct hci_conn *c; 523 524 rcu_read_lock(); 525 526 list_for_each_entry_rcu(c, &h->list, list) { 527 if (c->type == type && !bacmp(&c->dst, ba)) { 528 rcu_read_unlock(); 529 return c; 530 } 531 } 532 533 rcu_read_unlock(); 534 535 return NULL; 536 } 537 538 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 539 __u8 type, __u16 state) 540 { 541 struct hci_conn_hash *h = &hdev->conn_hash; 542 struct hci_conn *c; 543 544 rcu_read_lock(); 545 546 list_for_each_entry_rcu(c, &h->list, list) { 547 if (c->type == type && c->state == state) { 548 rcu_read_unlock(); 549 return c; 550 } 551 } 552 553 rcu_read_unlock(); 554 555 return NULL; 556 } 557 558 void hci_acl_connect(struct hci_conn *conn); 559 void hci_acl_disconn(struct hci_conn *conn, __u8 reason); 560 void hci_add_sco(struct hci_conn *conn, __u16 handle); 561 void hci_setup_sync(struct hci_conn *conn, __u16 handle); 562 void hci_sco_setup(struct hci_conn *conn, __u8 status); 563 564 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst); 565 int hci_conn_del(struct hci_conn *conn); 566 void hci_conn_hash_flush(struct hci_dev *hdev); 567 void hci_conn_check_pending(struct hci_dev *hdev); 568 569 struct hci_chan *hci_chan_create(struct hci_conn *conn); 570 int hci_chan_del(struct hci_chan *chan); 571 void hci_chan_list_flush(struct hci_conn *conn); 572 573 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, 574 __u8 sec_level, __u8 auth_type); 575 int hci_conn_check_link_mode(struct hci_conn *conn); 576 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 577 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type); 578 int hci_conn_change_link_key(struct hci_conn *conn); 579 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 580 581 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 582 583 void hci_conn_hold_device(struct hci_conn *conn); 584 void hci_conn_put_device(struct hci_conn *conn); 585 586 static inline void hci_conn_hold(struct hci_conn *conn) 587 { 588 atomic_inc(&conn->refcnt); 589 cancel_delayed_work(&conn->disc_work); 590 } 591 592 static inline void hci_conn_put(struct hci_conn *conn) 593 { 594 if (atomic_dec_and_test(&conn->refcnt)) { 595 unsigned long timeo; 596 if (conn->type == ACL_LINK || conn->type == LE_LINK) { 597 del_timer(&conn->idle_timer); 598 if (conn->state == BT_CONNECTED) { 599 timeo = msecs_to_jiffies(conn->disc_timeout); 600 if (!conn->out) 601 timeo *= 2; 602 } else { 603 timeo = msecs_to_jiffies(10); 604 } 605 } else { 606 timeo = msecs_to_jiffies(10); 607 } 608 cancel_delayed_work(&conn->disc_work); 609 queue_delayed_work(conn->hdev->workqueue, 610 &conn->disc_work, timeo); 611 } 612 } 613 614 /* ----- HCI Devices ----- */ 615 static inline void hci_dev_put(struct hci_dev *d) 616 { 617 put_device(&d->dev); 618 } 619 620 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 621 { 622 get_device(&d->dev); 623 return d; 624 } 625 626 #define hci_dev_lock(d) mutex_lock(&d->lock) 627 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 628 629 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 630 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 631 632 static inline void *hci_get_drvdata(struct hci_dev *hdev) 633 { 634 return dev_get_drvdata(&hdev->dev); 635 } 636 637 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 638 { 639 dev_set_drvdata(&hdev->dev, data); 640 } 641 642 struct hci_dev *hci_dev_get(int index); 643 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst); 644 645 struct hci_dev *hci_alloc_dev(void); 646 void hci_free_dev(struct hci_dev *hdev); 647 int hci_register_dev(struct hci_dev *hdev); 648 void hci_unregister_dev(struct hci_dev *hdev); 649 int hci_suspend_dev(struct hci_dev *hdev); 650 int hci_resume_dev(struct hci_dev *hdev); 651 int hci_dev_open(__u16 dev); 652 int hci_dev_close(__u16 dev); 653 int hci_dev_reset(__u16 dev); 654 int hci_dev_reset_stat(__u16 dev); 655 int hci_dev_cmd(unsigned int cmd, void __user *arg); 656 int hci_get_dev_list(void __user *arg); 657 int hci_get_dev_info(void __user *arg); 658 int hci_get_conn_list(void __user *arg); 659 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 660 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 661 int hci_inquiry(void __user *arg); 662 663 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr); 664 int hci_blacklist_clear(struct hci_dev *hdev); 665 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 666 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 667 668 int hci_uuids_clear(struct hci_dev *hdev); 669 670 int hci_link_keys_clear(struct hci_dev *hdev); 671 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 672 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, 673 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len); 674 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]); 675 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, 676 int new_key, u8 authenticated, u8 tk[16], u8 enc_size, u16 ediv, 677 u8 rand[8]); 678 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 679 u8 addr_type); 680 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr); 681 int hci_smp_ltks_clear(struct hci_dev *hdev); 682 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 683 684 int hci_remote_oob_data_clear(struct hci_dev *hdev); 685 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 686 bdaddr_t *bdaddr); 687 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, 688 u8 *randomizer); 689 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr); 690 691 #define ADV_CLEAR_TIMEOUT (3*60*HZ) /* Three minutes */ 692 int hci_adv_entries_clear(struct hci_dev *hdev); 693 struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr); 694 int hci_add_adv_entry(struct hci_dev *hdev, 695 struct hci_ev_le_advertising_info *ev); 696 697 void hci_del_off_timer(struct hci_dev *hdev); 698 699 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 700 701 int hci_recv_frame(struct sk_buff *skb); 702 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count); 703 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count); 704 705 void hci_init_sysfs(struct hci_dev *hdev); 706 int hci_add_sysfs(struct hci_dev *hdev); 707 void hci_del_sysfs(struct hci_dev *hdev); 708 void hci_conn_init_sysfs(struct hci_conn *conn); 709 void hci_conn_add_sysfs(struct hci_conn *conn); 710 void hci_conn_del_sysfs(struct hci_conn *conn); 711 712 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev)) 713 714 /* ----- LMP capabilities ----- */ 715 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH) 716 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT) 717 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF) 718 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR) 719 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO) 720 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR) 721 #define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH) 722 #define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE) 723 #define lmp_bredr_capable(dev) (!((dev)->features[4] & LMP_NO_BREDR)) 724 725 /* ----- Extended LMP capabilities ----- */ 726 #define lmp_host_le_capable(dev) ((dev)->host_features[0] & LMP_HOST_LE) 727 728 /* ----- HCI protocols ----- */ 729 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 730 __u8 type) 731 { 732 switch (type) { 733 case ACL_LINK: 734 return l2cap_connect_ind(hdev, bdaddr); 735 736 case SCO_LINK: 737 case ESCO_LINK: 738 return sco_connect_ind(hdev, bdaddr); 739 740 default: 741 BT_ERR("unknown link type %d", type); 742 return -EINVAL; 743 } 744 } 745 746 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status) 747 { 748 switch (conn->type) { 749 case ACL_LINK: 750 case LE_LINK: 751 l2cap_connect_cfm(conn, status); 752 break; 753 754 case SCO_LINK: 755 case ESCO_LINK: 756 sco_connect_cfm(conn, status); 757 break; 758 759 default: 760 BT_ERR("unknown link type %d", conn->type); 761 break; 762 } 763 764 if (conn->connect_cfm_cb) 765 conn->connect_cfm_cb(conn, status); 766 } 767 768 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 769 { 770 if (conn->type != ACL_LINK && conn->type != LE_LINK) 771 return HCI_ERROR_REMOTE_USER_TERM; 772 773 return l2cap_disconn_ind(conn); 774 } 775 776 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason) 777 { 778 switch (conn->type) { 779 case ACL_LINK: 780 case LE_LINK: 781 l2cap_disconn_cfm(conn, reason); 782 break; 783 784 case SCO_LINK: 785 case ESCO_LINK: 786 sco_disconn_cfm(conn, reason); 787 break; 788 789 default: 790 BT_ERR("unknown link type %d", conn->type); 791 break; 792 } 793 794 if (conn->disconn_cfm_cb) 795 conn->disconn_cfm_cb(conn, reason); 796 } 797 798 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status) 799 { 800 __u8 encrypt; 801 802 if (conn->type != ACL_LINK && conn->type != LE_LINK) 803 return; 804 805 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 806 return; 807 808 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00; 809 l2cap_security_cfm(conn, status, encrypt); 810 811 if (conn->security_cfm_cb) 812 conn->security_cfm_cb(conn, status); 813 } 814 815 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, 816 __u8 encrypt) 817 { 818 if (conn->type != ACL_LINK && conn->type != LE_LINK) 819 return; 820 821 l2cap_security_cfm(conn, status, encrypt); 822 823 if (conn->security_cfm_cb) 824 conn->security_cfm_cb(conn, status); 825 } 826 827 /* ----- HCI callbacks ----- */ 828 struct hci_cb { 829 struct list_head list; 830 831 char *name; 832 833 void (*security_cfm) (struct hci_conn *conn, __u8 status, 834 __u8 encrypt); 835 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 836 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 837 }; 838 839 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 840 { 841 struct list_head *p; 842 __u8 encrypt; 843 844 hci_proto_auth_cfm(conn, status); 845 846 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 847 return; 848 849 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00; 850 851 read_lock(&hci_cb_list_lock); 852 list_for_each(p, &hci_cb_list) { 853 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 854 if (cb->security_cfm) 855 cb->security_cfm(conn, status, encrypt); 856 } 857 read_unlock(&hci_cb_list_lock); 858 } 859 860 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, 861 __u8 encrypt) 862 { 863 struct list_head *p; 864 865 if (conn->sec_level == BT_SECURITY_SDP) 866 conn->sec_level = BT_SECURITY_LOW; 867 868 if (conn->pending_sec_level > conn->sec_level) 869 conn->sec_level = conn->pending_sec_level; 870 871 hci_proto_encrypt_cfm(conn, status, encrypt); 872 873 read_lock(&hci_cb_list_lock); 874 list_for_each(p, &hci_cb_list) { 875 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 876 if (cb->security_cfm) 877 cb->security_cfm(conn, status, encrypt); 878 } 879 read_unlock(&hci_cb_list_lock); 880 } 881 882 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 883 { 884 struct list_head *p; 885 886 read_lock(&hci_cb_list_lock); 887 list_for_each(p, &hci_cb_list) { 888 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 889 if (cb->key_change_cfm) 890 cb->key_change_cfm(conn, status); 891 } 892 read_unlock(&hci_cb_list_lock); 893 } 894 895 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 896 __u8 role) 897 { 898 struct list_head *p; 899 900 read_lock(&hci_cb_list_lock); 901 list_for_each(p, &hci_cb_list) { 902 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 903 if (cb->role_switch_cfm) 904 cb->role_switch_cfm(conn, status, role); 905 } 906 read_unlock(&hci_cb_list_lock); 907 } 908 909 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type) 910 { 911 size_t parsed = 0; 912 913 if (data_len < 2) 914 return false; 915 916 while (parsed < data_len - 1) { 917 u8 field_len = data[0]; 918 919 if (field_len == 0) 920 break; 921 922 parsed += field_len + 1; 923 924 if (parsed > data_len) 925 break; 926 927 if (data[1] == type) 928 return true; 929 930 data += field_len + 1; 931 } 932 933 return false; 934 } 935 936 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data, 937 u8 data_len) 938 { 939 eir[eir_len++] = sizeof(type) + data_len; 940 eir[eir_len++] = type; 941 memcpy(&eir[eir_len], data, data_len); 942 eir_len += data_len; 943 944 return eir_len; 945 } 946 947 int hci_register_cb(struct hci_cb *hcb); 948 int hci_unregister_cb(struct hci_cb *hcb); 949 950 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param); 951 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 952 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 953 954 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 955 956 /* ----- HCI Sockets ----- */ 957 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 958 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk); 959 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 960 961 void hci_sock_dev_event(struct hci_dev *hdev, int event); 962 963 /* Management interface */ 964 #define MGMT_ADDR_BREDR 0x00 965 #define MGMT_ADDR_LE_PUBLIC 0x01 966 #define MGMT_ADDR_LE_RANDOM 0x02 967 #define MGMT_ADDR_INVALID 0xff 968 969 #define DISCOV_TYPE_BREDR (BIT(MGMT_ADDR_BREDR)) 970 #define DISCOV_TYPE_LE (BIT(MGMT_ADDR_LE_PUBLIC) | \ 971 BIT(MGMT_ADDR_LE_RANDOM)) 972 #define DISCOV_TYPE_INTERLEAVED (BIT(MGMT_ADDR_BREDR) | \ 973 BIT(MGMT_ADDR_LE_PUBLIC) | \ 974 BIT(MGMT_ADDR_LE_RANDOM)) 975 976 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len); 977 int mgmt_index_added(struct hci_dev *hdev); 978 int mgmt_index_removed(struct hci_dev *hdev); 979 int mgmt_powered(struct hci_dev *hdev, u8 powered); 980 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable); 981 int mgmt_connectable(struct hci_dev *hdev, u8 connectable); 982 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status); 983 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 984 bool persistent); 985 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 986 u8 addr_type, u32 flags, u8 *name, u8 name_len, 987 u8 *dev_class); 988 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 989 u8 link_type, u8 addr_type); 990 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 991 u8 link_type, u8 addr_type, u8 status); 992 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 993 u8 addr_type, u8 status); 994 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 995 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 996 u8 status); 997 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 998 u8 status); 999 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1000 u8 link_type, u8 addr_type, __le32 value, 1001 u8 confirm_hint); 1002 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1003 u8 link_type, u8 addr_type, u8 status); 1004 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1005 u8 link_type, u8 addr_type, u8 status); 1006 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1007 u8 link_type, u8 addr_type); 1008 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1009 u8 link_type, u8 addr_type, u8 status); 1010 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1011 u8 link_type, u8 addr_type, u8 status); 1012 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1013 u8 addr_type, u8 status); 1014 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 1015 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1016 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 1017 u8 status); 1018 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 1019 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash, 1020 u8 *randomizer, u8 status); 1021 int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1022 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1023 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name, 1024 u8 ssp, u8 *eir, u16 eir_len); 1025 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1026 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 1027 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status); 1028 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status); 1029 int mgmt_discovering(struct hci_dev *hdev, u8 discovering); 1030 int mgmt_interleaved_discovery(struct hci_dev *hdev); 1031 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1032 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1033 1034 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent); 1035 1036 /* HCI info for socket */ 1037 #define hci_pi(sk) ((struct hci_pinfo *) sk) 1038 1039 struct hci_pinfo { 1040 struct bt_sock bt; 1041 struct hci_dev *hdev; 1042 struct hci_filter filter; 1043 __u32 cmsg_mask; 1044 unsigned short channel; 1045 }; 1046 1047 /* HCI security filter */ 1048 #define HCI_SFLT_MAX_OGF 5 1049 1050 struct hci_sec_filter { 1051 __u32 type_mask; 1052 __u32 event_mask[2]; 1053 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; 1054 }; 1055 1056 /* ----- HCI requests ----- */ 1057 #define HCI_REQ_DONE 0 1058 #define HCI_REQ_PEND 1 1059 #define HCI_REQ_CANCELED 2 1060 1061 #define hci_req_lock(d) mutex_lock(&d->req_lock) 1062 #define hci_req_unlock(d) mutex_unlock(&d->req_lock) 1063 1064 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result); 1065 1066 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, 1067 u16 latency, u16 to_multiplier); 1068 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8], 1069 __u8 ltk[16]); 1070 void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]); 1071 void hci_le_ltk_neg_reply(struct hci_conn *conn); 1072 1073 int hci_do_inquiry(struct hci_dev *hdev, u8 length); 1074 int hci_cancel_inquiry(struct hci_dev *hdev); 1075 int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window, 1076 int timeout); 1077 1078 #endif /* __HCI_CORE_H */ 1079