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 __u16 lmp_subver; 159 __u16 voice_setting; 160 __u8 io_capability; 161 __s8 inq_tx_power; 162 __u16 devid_source; 163 __u16 devid_vendor; 164 __u16 devid_product; 165 __u16 devid_version; 166 167 __u16 pkt_type; 168 __u16 esco_type; 169 __u16 link_policy; 170 __u16 link_mode; 171 172 __u32 idle_timeout; 173 __u16 sniff_min_interval; 174 __u16 sniff_max_interval; 175 176 __u8 amp_status; 177 __u32 amp_total_bw; 178 __u32 amp_max_bw; 179 __u32 amp_min_latency; 180 __u32 amp_max_pdu; 181 __u8 amp_type; 182 __u16 amp_pal_cap; 183 __u16 amp_assoc_size; 184 __u32 amp_max_flush_to; 185 __u32 amp_be_flush_to; 186 187 __u8 flow_ctl_mode; 188 189 unsigned int auto_accept_delay; 190 191 unsigned long quirks; 192 193 atomic_t cmd_cnt; 194 unsigned int acl_cnt; 195 unsigned int sco_cnt; 196 unsigned int le_cnt; 197 198 unsigned int acl_mtu; 199 unsigned int sco_mtu; 200 unsigned int le_mtu; 201 unsigned int acl_pkts; 202 unsigned int sco_pkts; 203 unsigned int le_pkts; 204 205 __u16 block_len; 206 __u16 block_mtu; 207 __u16 num_blocks; 208 __u16 block_cnt; 209 210 unsigned long acl_last_tx; 211 unsigned long sco_last_tx; 212 unsigned long le_last_tx; 213 214 struct workqueue_struct *workqueue; 215 216 struct work_struct power_on; 217 struct delayed_work power_off; 218 219 __u16 discov_timeout; 220 struct delayed_work discov_off; 221 222 struct delayed_work service_cache; 223 224 struct timer_list cmd_timer; 225 226 struct work_struct rx_work; 227 struct work_struct cmd_work; 228 struct work_struct tx_work; 229 230 struct sk_buff_head rx_q; 231 struct sk_buff_head raw_q; 232 struct sk_buff_head cmd_q; 233 234 struct sk_buff *sent_cmd; 235 struct sk_buff *reassembly[NUM_REASSEMBLY]; 236 237 struct mutex req_lock; 238 wait_queue_head_t req_wait_q; 239 __u32 req_status; 240 __u32 req_result; 241 242 __u16 init_last_cmd; 243 244 struct list_head mgmt_pending; 245 246 struct discovery_state discovery; 247 struct hci_conn_hash conn_hash; 248 struct list_head blacklist; 249 250 struct list_head uuids; 251 252 struct list_head link_keys; 253 254 struct list_head long_term_keys; 255 256 struct list_head remote_oob_data; 257 258 struct hci_dev_stats stat; 259 260 struct sk_buff_head driver_init; 261 262 void *core_data; 263 264 atomic_t promisc; 265 266 struct dentry *debugfs; 267 268 struct device dev; 269 270 struct rfkill *rfkill; 271 272 unsigned long dev_flags; 273 274 struct delayed_work le_scan_disable; 275 276 struct work_struct le_scan; 277 struct le_scan_params le_scan_params; 278 279 int (*open)(struct hci_dev *hdev); 280 int (*close)(struct hci_dev *hdev); 281 int (*flush)(struct hci_dev *hdev); 282 int (*send)(struct sk_buff *skb); 283 void (*notify)(struct hci_dev *hdev, unsigned int evt); 284 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg); 285 }; 286 287 struct hci_conn { 288 struct list_head list; 289 290 atomic_t refcnt; 291 292 bdaddr_t dst; 293 __u8 dst_type; 294 __u16 handle; 295 __u16 state; 296 __u8 mode; 297 __u8 type; 298 bool out; 299 __u8 attempt; 300 __u8 dev_class[3]; 301 __u8 features[8]; 302 __u16 interval; 303 __u16 pkt_type; 304 __u16 link_policy; 305 __u32 link_mode; 306 __u8 key_type; 307 __u8 auth_type; 308 __u8 sec_level; 309 __u8 pending_sec_level; 310 __u8 pin_length; 311 __u8 enc_key_size; 312 __u8 io_capability; 313 __u16 disc_timeout; 314 unsigned long flags; 315 316 __u8 remote_cap; 317 __u8 remote_auth; 318 bool flush_key; 319 320 unsigned int sent; 321 322 struct sk_buff_head data_q; 323 struct list_head chan_list; 324 325 struct delayed_work disc_work; 326 struct timer_list idle_timer; 327 struct timer_list auto_accept_timer; 328 329 struct device dev; 330 atomic_t devref; 331 332 struct hci_dev *hdev; 333 void *l2cap_data; 334 void *sco_data; 335 void *smp_conn; 336 337 struct hci_conn *link; 338 339 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 340 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 341 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 342 }; 343 344 struct hci_chan { 345 struct list_head list; 346 347 struct hci_conn *conn; 348 struct sk_buff_head data_q; 349 unsigned int sent; 350 }; 351 352 extern struct list_head hci_dev_list; 353 extern struct list_head hci_cb_list; 354 extern rwlock_t hci_dev_list_lock; 355 extern rwlock_t hci_cb_list_lock; 356 357 /* ----- HCI interface to upper protocols ----- */ 358 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 359 extern int l2cap_connect_cfm(struct hci_conn *hcon, u8 status); 360 extern int l2cap_disconn_ind(struct hci_conn *hcon); 361 extern int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason); 362 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt); 363 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 364 365 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 366 extern int sco_connect_cfm(struct hci_conn *hcon, __u8 status); 367 extern int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason); 368 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 369 370 /* ----- Inquiry cache ----- */ 371 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 372 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 373 374 static inline void discovery_init(struct hci_dev *hdev) 375 { 376 hdev->discovery.state = DISCOVERY_STOPPED; 377 INIT_LIST_HEAD(&hdev->discovery.all); 378 INIT_LIST_HEAD(&hdev->discovery.unknown); 379 INIT_LIST_HEAD(&hdev->discovery.resolve); 380 } 381 382 bool hci_discovery_active(struct hci_dev *hdev); 383 384 void hci_discovery_set_state(struct hci_dev *hdev, int state); 385 386 static inline int inquiry_cache_empty(struct hci_dev *hdev) 387 { 388 return list_empty(&hdev->discovery.all); 389 } 390 391 static inline long inquiry_cache_age(struct hci_dev *hdev) 392 { 393 struct discovery_state *c = &hdev->discovery; 394 return jiffies - c->timestamp; 395 } 396 397 static inline long inquiry_entry_age(struct inquiry_entry *e) 398 { 399 return jiffies - e->timestamp; 400 } 401 402 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 403 bdaddr_t *bdaddr); 404 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 405 bdaddr_t *bdaddr); 406 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 407 bdaddr_t *bdaddr, 408 int state); 409 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 410 struct inquiry_entry *ie); 411 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 412 bool name_known, bool *ssp); 413 414 /* ----- HCI Connections ----- */ 415 enum { 416 HCI_CONN_AUTH_PEND, 417 HCI_CONN_REAUTH_PEND, 418 HCI_CONN_ENCRYPT_PEND, 419 HCI_CONN_RSWITCH_PEND, 420 HCI_CONN_MODE_CHANGE_PEND, 421 HCI_CONN_SCO_SETUP_PEND, 422 HCI_CONN_LE_SMP_PEND, 423 HCI_CONN_MGMT_CONNECTED, 424 HCI_CONN_SSP_ENABLED, 425 HCI_CONN_POWER_SAVE, 426 HCI_CONN_REMOTE_OOB, 427 }; 428 429 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 430 { 431 struct hci_dev *hdev = conn->hdev; 432 return (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) && 433 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags)); 434 } 435 436 static inline void hci_conn_hash_init(struct hci_dev *hdev) 437 { 438 struct hci_conn_hash *h = &hdev->conn_hash; 439 INIT_LIST_HEAD(&h->list); 440 h->acl_num = 0; 441 h->sco_num = 0; 442 h->le_num = 0; 443 } 444 445 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 446 { 447 struct hci_conn_hash *h = &hdev->conn_hash; 448 list_add_rcu(&c->list, &h->list); 449 switch (c->type) { 450 case ACL_LINK: 451 h->acl_num++; 452 break; 453 case LE_LINK: 454 h->le_num++; 455 break; 456 case SCO_LINK: 457 case ESCO_LINK: 458 h->sco_num++; 459 break; 460 } 461 } 462 463 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 464 { 465 struct hci_conn_hash *h = &hdev->conn_hash; 466 467 list_del_rcu(&c->list); 468 synchronize_rcu(); 469 470 switch (c->type) { 471 case ACL_LINK: 472 h->acl_num--; 473 break; 474 case LE_LINK: 475 h->le_num--; 476 break; 477 case SCO_LINK: 478 case ESCO_LINK: 479 h->sco_num--; 480 break; 481 } 482 } 483 484 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 485 { 486 struct hci_conn_hash *h = &hdev->conn_hash; 487 switch (type) { 488 case ACL_LINK: 489 return h->acl_num; 490 case LE_LINK: 491 return h->le_num; 492 case SCO_LINK: 493 case ESCO_LINK: 494 return h->sco_num; 495 default: 496 return 0; 497 } 498 } 499 500 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 501 __u16 handle) 502 { 503 struct hci_conn_hash *h = &hdev->conn_hash; 504 struct hci_conn *c; 505 506 rcu_read_lock(); 507 508 list_for_each_entry_rcu(c, &h->list, list) { 509 if (c->handle == handle) { 510 rcu_read_unlock(); 511 return c; 512 } 513 } 514 rcu_read_unlock(); 515 516 return NULL; 517 } 518 519 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 520 __u8 type, bdaddr_t *ba) 521 { 522 struct hci_conn_hash *h = &hdev->conn_hash; 523 struct hci_conn *c; 524 525 rcu_read_lock(); 526 527 list_for_each_entry_rcu(c, &h->list, list) { 528 if (c->type == type && !bacmp(&c->dst, ba)) { 529 rcu_read_unlock(); 530 return c; 531 } 532 } 533 534 rcu_read_unlock(); 535 536 return NULL; 537 } 538 539 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 540 __u8 type, __u16 state) 541 { 542 struct hci_conn_hash *h = &hdev->conn_hash; 543 struct hci_conn *c; 544 545 rcu_read_lock(); 546 547 list_for_each_entry_rcu(c, &h->list, list) { 548 if (c->type == type && c->state == state) { 549 rcu_read_unlock(); 550 return c; 551 } 552 } 553 554 rcu_read_unlock(); 555 556 return NULL; 557 } 558 559 void hci_acl_connect(struct hci_conn *conn); 560 void hci_acl_disconn(struct hci_conn *conn, __u8 reason); 561 void hci_add_sco(struct hci_conn *conn, __u16 handle); 562 void hci_setup_sync(struct hci_conn *conn, __u16 handle); 563 void hci_sco_setup(struct hci_conn *conn, __u8 status); 564 565 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst); 566 int hci_conn_del(struct hci_conn *conn); 567 void hci_conn_hash_flush(struct hci_dev *hdev); 568 void hci_conn_check_pending(struct hci_dev *hdev); 569 570 struct hci_chan *hci_chan_create(struct hci_conn *conn); 571 int hci_chan_del(struct hci_chan *chan); 572 void hci_chan_list_flush(struct hci_conn *conn); 573 574 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, 575 __u8 dst_type, __u8 sec_level, __u8 auth_type); 576 int hci_conn_check_link_mode(struct hci_conn *conn); 577 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 578 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type); 579 int hci_conn_change_link_key(struct hci_conn *conn); 580 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 581 582 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 583 584 void hci_conn_hold_device(struct hci_conn *conn); 585 void hci_conn_put_device(struct hci_conn *conn); 586 587 static inline void hci_conn_hold(struct hci_conn *conn) 588 { 589 atomic_inc(&conn->refcnt); 590 cancel_delayed_work(&conn->disc_work); 591 } 592 593 static inline void hci_conn_put(struct hci_conn *conn) 594 { 595 if (atomic_dec_and_test(&conn->refcnt)) { 596 unsigned long timeo; 597 if (conn->type == ACL_LINK || conn->type == LE_LINK) { 598 del_timer(&conn->idle_timer); 599 if (conn->state == BT_CONNECTED) { 600 timeo = msecs_to_jiffies(conn->disc_timeout); 601 if (!conn->out) 602 timeo *= 2; 603 } else { 604 timeo = msecs_to_jiffies(10); 605 } 606 } else { 607 timeo = msecs_to_jiffies(10); 608 } 609 cancel_delayed_work(&conn->disc_work); 610 queue_delayed_work(conn->hdev->workqueue, 611 &conn->disc_work, timeo); 612 } 613 } 614 615 /* ----- HCI Devices ----- */ 616 static inline void hci_dev_put(struct hci_dev *d) 617 { 618 put_device(&d->dev); 619 } 620 621 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 622 { 623 get_device(&d->dev); 624 return d; 625 } 626 627 #define hci_dev_lock(d) mutex_lock(&d->lock) 628 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 629 630 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 631 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 632 633 static inline void *hci_get_drvdata(struct hci_dev *hdev) 634 { 635 return dev_get_drvdata(&hdev->dev); 636 } 637 638 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 639 { 640 dev_set_drvdata(&hdev->dev, data); 641 } 642 643 struct hci_dev *hci_dev_get(int index); 644 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst); 645 646 struct hci_dev *hci_alloc_dev(void); 647 void hci_free_dev(struct hci_dev *hdev); 648 int hci_register_dev(struct hci_dev *hdev); 649 void hci_unregister_dev(struct hci_dev *hdev); 650 int hci_suspend_dev(struct hci_dev *hdev); 651 int hci_resume_dev(struct hci_dev *hdev); 652 int hci_dev_open(__u16 dev); 653 int hci_dev_close(__u16 dev); 654 int hci_dev_reset(__u16 dev); 655 int hci_dev_reset_stat(__u16 dev); 656 int hci_dev_cmd(unsigned int cmd, void __user *arg); 657 int hci_get_dev_list(void __user *arg); 658 int hci_get_dev_info(void __user *arg); 659 int hci_get_conn_list(void __user *arg); 660 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 661 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 662 int hci_inquiry(void __user *arg); 663 664 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr); 665 int hci_blacklist_clear(struct hci_dev *hdev); 666 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 667 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 668 669 int hci_uuids_clear(struct hci_dev *hdev); 670 671 int hci_link_keys_clear(struct hci_dev *hdev); 672 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 673 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, 674 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len); 675 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]); 676 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, 677 int new_key, u8 authenticated, u8 tk[16], u8 enc_size, 678 __le16 ediv, u8 rand[8]); 679 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 680 u8 addr_type); 681 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr); 682 int hci_smp_ltks_clear(struct hci_dev *hdev); 683 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 684 685 int hci_remote_oob_data_clear(struct hci_dev *hdev); 686 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 687 bdaddr_t *bdaddr); 688 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, 689 u8 *randomizer); 690 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr); 691 692 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 693 694 int hci_recv_frame(struct sk_buff *skb); 695 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count); 696 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count); 697 698 void hci_init_sysfs(struct hci_dev *hdev); 699 int hci_add_sysfs(struct hci_dev *hdev); 700 void hci_del_sysfs(struct hci_dev *hdev); 701 void hci_conn_init_sysfs(struct hci_conn *conn); 702 void hci_conn_add_sysfs(struct hci_conn *conn); 703 void hci_conn_del_sysfs(struct hci_conn *conn); 704 705 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 706 707 /* ----- LMP capabilities ----- */ 708 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH) 709 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT) 710 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF) 711 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR) 712 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO) 713 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR) 714 #define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH) 715 #define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE) 716 #define lmp_bredr_capable(dev) (!((dev)->features[4] & LMP_NO_BREDR)) 717 718 /* ----- Extended LMP capabilities ----- */ 719 #define lmp_host_le_capable(dev) ((dev)->host_features[0] & LMP_HOST_LE) 720 721 /* ----- HCI protocols ----- */ 722 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 723 __u8 type) 724 { 725 switch (type) { 726 case ACL_LINK: 727 return l2cap_connect_ind(hdev, bdaddr); 728 729 case SCO_LINK: 730 case ESCO_LINK: 731 return sco_connect_ind(hdev, bdaddr); 732 733 default: 734 BT_ERR("unknown link type %d", type); 735 return -EINVAL; 736 } 737 } 738 739 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status) 740 { 741 switch (conn->type) { 742 case ACL_LINK: 743 case LE_LINK: 744 l2cap_connect_cfm(conn, status); 745 break; 746 747 case SCO_LINK: 748 case ESCO_LINK: 749 sco_connect_cfm(conn, status); 750 break; 751 752 default: 753 BT_ERR("unknown link type %d", conn->type); 754 break; 755 } 756 757 if (conn->connect_cfm_cb) 758 conn->connect_cfm_cb(conn, status); 759 } 760 761 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 762 { 763 if (conn->type != ACL_LINK && conn->type != LE_LINK) 764 return HCI_ERROR_REMOTE_USER_TERM; 765 766 return l2cap_disconn_ind(conn); 767 } 768 769 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason) 770 { 771 switch (conn->type) { 772 case ACL_LINK: 773 case LE_LINK: 774 l2cap_disconn_cfm(conn, reason); 775 break; 776 777 case SCO_LINK: 778 case ESCO_LINK: 779 sco_disconn_cfm(conn, reason); 780 break; 781 782 default: 783 BT_ERR("unknown link type %d", conn->type); 784 break; 785 } 786 787 if (conn->disconn_cfm_cb) 788 conn->disconn_cfm_cb(conn, reason); 789 } 790 791 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status) 792 { 793 __u8 encrypt; 794 795 if (conn->type != ACL_LINK && conn->type != LE_LINK) 796 return; 797 798 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 799 return; 800 801 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00; 802 l2cap_security_cfm(conn, status, encrypt); 803 804 if (conn->security_cfm_cb) 805 conn->security_cfm_cb(conn, status); 806 } 807 808 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, 809 __u8 encrypt) 810 { 811 if (conn->type != ACL_LINK && conn->type != LE_LINK) 812 return; 813 814 l2cap_security_cfm(conn, status, encrypt); 815 816 if (conn->security_cfm_cb) 817 conn->security_cfm_cb(conn, status); 818 } 819 820 /* ----- HCI callbacks ----- */ 821 struct hci_cb { 822 struct list_head list; 823 824 char *name; 825 826 void (*security_cfm) (struct hci_conn *conn, __u8 status, 827 __u8 encrypt); 828 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 829 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 830 }; 831 832 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 833 { 834 struct list_head *p; 835 __u8 encrypt; 836 837 hci_proto_auth_cfm(conn, status); 838 839 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 840 return; 841 842 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00; 843 844 read_lock(&hci_cb_list_lock); 845 list_for_each(p, &hci_cb_list) { 846 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 847 if (cb->security_cfm) 848 cb->security_cfm(conn, status, encrypt); 849 } 850 read_unlock(&hci_cb_list_lock); 851 } 852 853 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, 854 __u8 encrypt) 855 { 856 struct list_head *p; 857 858 if (conn->sec_level == BT_SECURITY_SDP) 859 conn->sec_level = BT_SECURITY_LOW; 860 861 if (conn->pending_sec_level > conn->sec_level) 862 conn->sec_level = conn->pending_sec_level; 863 864 hci_proto_encrypt_cfm(conn, status, encrypt); 865 866 read_lock(&hci_cb_list_lock); 867 list_for_each(p, &hci_cb_list) { 868 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 869 if (cb->security_cfm) 870 cb->security_cfm(conn, status, encrypt); 871 } 872 read_unlock(&hci_cb_list_lock); 873 } 874 875 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 876 { 877 struct list_head *p; 878 879 read_lock(&hci_cb_list_lock); 880 list_for_each(p, &hci_cb_list) { 881 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 882 if (cb->key_change_cfm) 883 cb->key_change_cfm(conn, status); 884 } 885 read_unlock(&hci_cb_list_lock); 886 } 887 888 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 889 __u8 role) 890 { 891 struct list_head *p; 892 893 read_lock(&hci_cb_list_lock); 894 list_for_each(p, &hci_cb_list) { 895 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 896 if (cb->role_switch_cfm) 897 cb->role_switch_cfm(conn, status, role); 898 } 899 read_unlock(&hci_cb_list_lock); 900 } 901 902 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type) 903 { 904 size_t parsed = 0; 905 906 if (data_len < 2) 907 return false; 908 909 while (parsed < data_len - 1) { 910 u8 field_len = data[0]; 911 912 if (field_len == 0) 913 break; 914 915 parsed += field_len + 1; 916 917 if (parsed > data_len) 918 break; 919 920 if (data[1] == type) 921 return true; 922 923 data += field_len + 1; 924 } 925 926 return false; 927 } 928 929 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 930 { 931 size_t parsed = 0; 932 933 while (parsed < eir_len) { 934 u8 field_len = eir[0]; 935 936 if (field_len == 0) 937 return parsed; 938 939 parsed += field_len + 1; 940 eir += field_len + 1; 941 } 942 943 return eir_len; 944 } 945 946 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data, 947 u8 data_len) 948 { 949 eir[eir_len++] = sizeof(type) + data_len; 950 eir[eir_len++] = type; 951 memcpy(&eir[eir_len], data, data_len); 952 eir_len += data_len; 953 954 return eir_len; 955 } 956 957 int hci_register_cb(struct hci_cb *hcb); 958 int hci_unregister_cb(struct hci_cb *hcb); 959 960 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param); 961 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 962 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 963 964 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 965 966 /* ----- HCI Sockets ----- */ 967 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 968 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk); 969 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 970 971 void hci_sock_dev_event(struct hci_dev *hdev, int event); 972 973 /* Management interface */ 974 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 975 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 976 BIT(BDADDR_LE_RANDOM)) 977 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 978 BIT(BDADDR_LE_PUBLIC) | \ 979 BIT(BDADDR_LE_RANDOM)) 980 981 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len); 982 int mgmt_index_added(struct hci_dev *hdev); 983 int mgmt_index_removed(struct hci_dev *hdev); 984 int mgmt_powered(struct hci_dev *hdev, u8 powered); 985 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable); 986 int mgmt_connectable(struct hci_dev *hdev, u8 connectable); 987 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status); 988 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 989 bool persistent); 990 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 991 u8 addr_type, u32 flags, u8 *name, u8 name_len, 992 u8 *dev_class); 993 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 994 u8 link_type, u8 addr_type); 995 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 996 u8 link_type, u8 addr_type, u8 status); 997 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 998 u8 addr_type, u8 status); 999 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 1000 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1001 u8 status); 1002 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1003 u8 status); 1004 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1005 u8 link_type, u8 addr_type, __le32 value, 1006 u8 confirm_hint); 1007 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1008 u8 link_type, u8 addr_type, u8 status); 1009 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1010 u8 link_type, u8 addr_type, u8 status); 1011 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1012 u8 link_type, u8 addr_type); 1013 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1014 u8 link_type, u8 addr_type, u8 status); 1015 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1016 u8 link_type, u8 addr_type, u8 status); 1017 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1018 u8 addr_type, u8 status); 1019 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 1020 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1021 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 1022 u8 status); 1023 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 1024 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash, 1025 u8 *randomizer, u8 status); 1026 int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1027 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1028 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name, 1029 u8 ssp, u8 *eir, u16 eir_len); 1030 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1031 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 1032 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status); 1033 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status); 1034 int mgmt_discovering(struct hci_dev *hdev, u8 discovering); 1035 int mgmt_interleaved_discovery(struct hci_dev *hdev); 1036 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1037 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1038 1039 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent); 1040 1041 /* HCI info for socket */ 1042 #define hci_pi(sk) ((struct hci_pinfo *) sk) 1043 1044 struct hci_pinfo { 1045 struct bt_sock bt; 1046 struct hci_dev *hdev; 1047 struct hci_filter filter; 1048 __u32 cmsg_mask; 1049 unsigned short channel; 1050 }; 1051 1052 /* HCI security filter */ 1053 #define HCI_SFLT_MAX_OGF 5 1054 1055 struct hci_sec_filter { 1056 __u32 type_mask; 1057 __u32 event_mask[2]; 1058 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; 1059 }; 1060 1061 /* ----- HCI requests ----- */ 1062 #define HCI_REQ_DONE 0 1063 #define HCI_REQ_PEND 1 1064 #define HCI_REQ_CANCELED 2 1065 1066 #define hci_req_lock(d) mutex_lock(&d->req_lock) 1067 #define hci_req_unlock(d) mutex_unlock(&d->req_lock) 1068 1069 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result); 1070 1071 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, 1072 u16 latency, u16 to_multiplier); 1073 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8], 1074 __u8 ltk[16]); 1075 int hci_do_inquiry(struct hci_dev *hdev, u8 length); 1076 int hci_cancel_inquiry(struct hci_dev *hdev); 1077 int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window, 1078 int timeout); 1079 int hci_cancel_le_scan(struct hci_dev *hdev); 1080 1081 u8 bdaddr_to_le(u8 bdaddr_type); 1082 1083 #endif /* __HCI_CORE_H */ 1084