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 <net/bluetooth/hci.h> 29 30 /* HCI priority */ 31 #define HCI_PRIO_MAX 7 32 33 /* HCI Core structures */ 34 struct inquiry_data { 35 bdaddr_t bdaddr; 36 __u8 pscan_rep_mode; 37 __u8 pscan_period_mode; 38 __u8 pscan_mode; 39 __u8 dev_class[3]; 40 __le16 clock_offset; 41 __s8 rssi; 42 __u8 ssp_mode; 43 }; 44 45 struct inquiry_entry { 46 struct list_head all; /* inq_cache.all */ 47 struct list_head list; /* unknown or resolve */ 48 enum { 49 NAME_NOT_KNOWN, 50 NAME_NEEDED, 51 NAME_PENDING, 52 NAME_KNOWN, 53 } name_state; 54 __u32 timestamp; 55 struct inquiry_data data; 56 }; 57 58 struct discovery_state { 59 int type; 60 enum { 61 DISCOVERY_STOPPED, 62 DISCOVERY_STARTING, 63 DISCOVERY_FINDING, 64 DISCOVERY_RESOLVING, 65 DISCOVERY_STOPPING, 66 } state; 67 struct list_head all; /* All devices found during inquiry */ 68 struct list_head unknown; /* Name state not known */ 69 struct list_head resolve; /* Name needs to be resolved */ 70 __u32 timestamp; 71 }; 72 73 struct hci_conn_hash { 74 struct list_head list; 75 unsigned int acl_num; 76 unsigned int sco_num; 77 unsigned int le_num; 78 }; 79 80 struct bdaddr_list { 81 struct list_head list; 82 bdaddr_t bdaddr; 83 }; 84 85 struct bt_uuid { 86 struct list_head list; 87 u8 uuid[16]; 88 u8 svc_hint; 89 }; 90 91 struct smp_ltk { 92 struct list_head list; 93 bdaddr_t bdaddr; 94 u8 bdaddr_type; 95 u8 authenticated; 96 u8 type; 97 u8 enc_size; 98 __le16 ediv; 99 u8 rand[8]; 100 u8 val[16]; 101 } __packed; 102 103 struct link_key { 104 struct list_head list; 105 bdaddr_t bdaddr; 106 u8 type; 107 u8 val[HCI_LINK_KEY_SIZE]; 108 u8 pin_len; 109 }; 110 111 struct oob_data { 112 struct list_head list; 113 bdaddr_t bdaddr; 114 u8 hash[16]; 115 u8 randomizer[16]; 116 }; 117 118 struct le_scan_params { 119 u8 type; 120 u16 interval; 121 u16 window; 122 int timeout; 123 }; 124 125 #define HCI_MAX_SHORT_NAME_LENGTH 10 126 127 #define NUM_REASSEMBLY 4 128 struct hci_dev { 129 struct list_head list; 130 struct mutex lock; 131 132 char name[8]; 133 unsigned long flags; 134 __u16 id; 135 __u8 bus; 136 __u8 dev_type; 137 bdaddr_t bdaddr; 138 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 139 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 140 __u8 eir[HCI_MAX_EIR_LENGTH]; 141 __u8 dev_class[3]; 142 __u8 major_class; 143 __u8 minor_class; 144 __u8 features[8]; 145 __u8 host_features[8]; 146 __u8 commands[64]; 147 __u8 hci_ver; 148 __u16 hci_rev; 149 __u8 lmp_ver; 150 __u16 manufacturer; 151 __u16 lmp_subver; 152 __u16 voice_setting; 153 __u8 io_capability; 154 __s8 inq_tx_power; 155 __u16 devid_source; 156 __u16 devid_vendor; 157 __u16 devid_product; 158 __u16 devid_version; 159 160 __u16 pkt_type; 161 __u16 esco_type; 162 __u16 link_policy; 163 __u16 link_mode; 164 165 __u32 idle_timeout; 166 __u16 sniff_min_interval; 167 __u16 sniff_max_interval; 168 169 __u8 amp_status; 170 __u32 amp_total_bw; 171 __u32 amp_max_bw; 172 __u32 amp_min_latency; 173 __u32 amp_max_pdu; 174 __u8 amp_type; 175 __u16 amp_pal_cap; 176 __u16 amp_assoc_size; 177 __u32 amp_max_flush_to; 178 __u32 amp_be_flush_to; 179 180 __u8 flow_ctl_mode; 181 182 unsigned int auto_accept_delay; 183 184 unsigned long quirks; 185 186 atomic_t cmd_cnt; 187 unsigned int acl_cnt; 188 unsigned int sco_cnt; 189 unsigned int le_cnt; 190 191 unsigned int acl_mtu; 192 unsigned int sco_mtu; 193 unsigned int le_mtu; 194 unsigned int acl_pkts; 195 unsigned int sco_pkts; 196 unsigned int le_pkts; 197 198 __u16 block_len; 199 __u16 block_mtu; 200 __u16 num_blocks; 201 __u16 block_cnt; 202 203 unsigned long acl_last_tx; 204 unsigned long sco_last_tx; 205 unsigned long le_last_tx; 206 207 struct workqueue_struct *workqueue; 208 209 struct work_struct power_on; 210 struct delayed_work power_off; 211 212 __u16 discov_timeout; 213 struct delayed_work discov_off; 214 215 struct delayed_work service_cache; 216 217 struct timer_list cmd_timer; 218 219 struct work_struct rx_work; 220 struct work_struct cmd_work; 221 struct work_struct tx_work; 222 223 struct sk_buff_head rx_q; 224 struct sk_buff_head raw_q; 225 struct sk_buff_head cmd_q; 226 227 struct sk_buff *sent_cmd; 228 struct sk_buff *reassembly[NUM_REASSEMBLY]; 229 230 struct mutex req_lock; 231 wait_queue_head_t req_wait_q; 232 __u32 req_status; 233 __u32 req_result; 234 235 __u16 init_last_cmd; 236 237 struct list_head mgmt_pending; 238 239 struct discovery_state discovery; 240 struct hci_conn_hash conn_hash; 241 struct list_head blacklist; 242 243 struct list_head uuids; 244 245 struct list_head link_keys; 246 247 struct list_head long_term_keys; 248 249 struct list_head remote_oob_data; 250 251 struct hci_dev_stats stat; 252 253 struct sk_buff_head driver_init; 254 255 void *core_data; 256 257 atomic_t promisc; 258 259 struct dentry *debugfs; 260 261 struct device dev; 262 263 struct rfkill *rfkill; 264 265 unsigned long dev_flags; 266 267 struct delayed_work le_scan_disable; 268 269 struct work_struct le_scan; 270 struct le_scan_params le_scan_params; 271 272 int (*open)(struct hci_dev *hdev); 273 int (*close)(struct hci_dev *hdev); 274 int (*flush)(struct hci_dev *hdev); 275 int (*send)(struct sk_buff *skb); 276 void (*notify)(struct hci_dev *hdev, unsigned int evt); 277 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg); 278 }; 279 280 struct hci_conn { 281 struct list_head list; 282 283 atomic_t refcnt; 284 285 bdaddr_t dst; 286 __u8 dst_type; 287 __u16 handle; 288 __u16 state; 289 __u8 mode; 290 __u8 type; 291 bool out; 292 __u8 attempt; 293 __u8 dev_class[3]; 294 __u8 features[8]; 295 __u16 interval; 296 __u16 pkt_type; 297 __u16 link_policy; 298 __u32 link_mode; 299 __u8 key_type; 300 __u8 auth_type; 301 __u8 sec_level; 302 __u8 pending_sec_level; 303 __u8 pin_length; 304 __u8 enc_key_size; 305 __u8 io_capability; 306 __u32 passkey_notify; 307 __u8 passkey_entered; 308 __u16 disc_timeout; 309 unsigned long flags; 310 311 __u8 remote_cap; 312 __u8 remote_auth; 313 bool flush_key; 314 315 unsigned int sent; 316 317 struct sk_buff_head data_q; 318 struct list_head chan_list; 319 320 struct delayed_work disc_work; 321 struct timer_list idle_timer; 322 struct timer_list auto_accept_timer; 323 324 struct device dev; 325 atomic_t devref; 326 327 struct hci_dev *hdev; 328 void *l2cap_data; 329 void *sco_data; 330 void *smp_conn; 331 struct amp_mgr *amp_mgr; 332 333 struct hci_conn *link; 334 335 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 336 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 337 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 338 }; 339 340 struct hci_chan { 341 struct list_head list; 342 343 struct hci_conn *conn; 344 struct sk_buff_head data_q; 345 unsigned int sent; 346 }; 347 348 extern struct list_head hci_dev_list; 349 extern struct list_head hci_cb_list; 350 extern rwlock_t hci_dev_list_lock; 351 extern rwlock_t hci_cb_list_lock; 352 353 /* ----- HCI interface to upper protocols ----- */ 354 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 355 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status); 356 extern int l2cap_disconn_ind(struct hci_conn *hcon); 357 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason); 358 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt); 359 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, 360 u16 flags); 361 362 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 363 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status); 364 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason); 365 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 366 367 /* ----- Inquiry cache ----- */ 368 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 369 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 370 371 static inline void discovery_init(struct hci_dev *hdev) 372 { 373 hdev->discovery.state = DISCOVERY_STOPPED; 374 INIT_LIST_HEAD(&hdev->discovery.all); 375 INIT_LIST_HEAD(&hdev->discovery.unknown); 376 INIT_LIST_HEAD(&hdev->discovery.resolve); 377 } 378 379 bool hci_discovery_active(struct hci_dev *hdev); 380 381 void hci_discovery_set_state(struct hci_dev *hdev, int state); 382 383 static inline int inquiry_cache_empty(struct hci_dev *hdev) 384 { 385 return list_empty(&hdev->discovery.all); 386 } 387 388 static inline long inquiry_cache_age(struct hci_dev *hdev) 389 { 390 struct discovery_state *c = &hdev->discovery; 391 return jiffies - c->timestamp; 392 } 393 394 static inline long inquiry_entry_age(struct inquiry_entry *e) 395 { 396 return jiffies - e->timestamp; 397 } 398 399 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 400 bdaddr_t *bdaddr); 401 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 402 bdaddr_t *bdaddr); 403 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 404 bdaddr_t *bdaddr, 405 int state); 406 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 407 struct inquiry_entry *ie); 408 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 409 bool name_known, bool *ssp); 410 411 /* ----- HCI Connections ----- */ 412 enum { 413 HCI_CONN_AUTH_PEND, 414 HCI_CONN_REAUTH_PEND, 415 HCI_CONN_ENCRYPT_PEND, 416 HCI_CONN_RSWITCH_PEND, 417 HCI_CONN_MODE_CHANGE_PEND, 418 HCI_CONN_SCO_SETUP_PEND, 419 HCI_CONN_LE_SMP_PEND, 420 HCI_CONN_MGMT_CONNECTED, 421 HCI_CONN_SSP_ENABLED, 422 HCI_CONN_POWER_SAVE, 423 HCI_CONN_REMOTE_OOB, 424 }; 425 426 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 427 { 428 struct hci_dev *hdev = conn->hdev; 429 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) && 430 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 431 } 432 433 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 434 { 435 struct hci_conn_hash *h = &hdev->conn_hash; 436 list_add_rcu(&c->list, &h->list); 437 switch (c->type) { 438 case ACL_LINK: 439 h->acl_num++; 440 break; 441 case LE_LINK: 442 h->le_num++; 443 break; 444 case SCO_LINK: 445 case ESCO_LINK: 446 h->sco_num++; 447 break; 448 } 449 } 450 451 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 452 { 453 struct hci_conn_hash *h = &hdev->conn_hash; 454 455 list_del_rcu(&c->list); 456 synchronize_rcu(); 457 458 switch (c->type) { 459 case ACL_LINK: 460 h->acl_num--; 461 break; 462 case LE_LINK: 463 h->le_num--; 464 break; 465 case SCO_LINK: 466 case ESCO_LINK: 467 h->sco_num--; 468 break; 469 } 470 } 471 472 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 473 { 474 struct hci_conn_hash *h = &hdev->conn_hash; 475 switch (type) { 476 case ACL_LINK: 477 return h->acl_num; 478 case LE_LINK: 479 return h->le_num; 480 case SCO_LINK: 481 case ESCO_LINK: 482 return h->sco_num; 483 default: 484 return 0; 485 } 486 } 487 488 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 489 __u16 handle) 490 { 491 struct hci_conn_hash *h = &hdev->conn_hash; 492 struct hci_conn *c; 493 494 rcu_read_lock(); 495 496 list_for_each_entry_rcu(c, &h->list, list) { 497 if (c->handle == handle) { 498 rcu_read_unlock(); 499 return c; 500 } 501 } 502 rcu_read_unlock(); 503 504 return NULL; 505 } 506 507 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 508 __u8 type, bdaddr_t *ba) 509 { 510 struct hci_conn_hash *h = &hdev->conn_hash; 511 struct hci_conn *c; 512 513 rcu_read_lock(); 514 515 list_for_each_entry_rcu(c, &h->list, list) { 516 if (c->type == type && !bacmp(&c->dst, ba)) { 517 rcu_read_unlock(); 518 return c; 519 } 520 } 521 522 rcu_read_unlock(); 523 524 return NULL; 525 } 526 527 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 528 __u8 type, __u16 state) 529 { 530 struct hci_conn_hash *h = &hdev->conn_hash; 531 struct hci_conn *c; 532 533 rcu_read_lock(); 534 535 list_for_each_entry_rcu(c, &h->list, list) { 536 if (c->type == type && c->state == state) { 537 rcu_read_unlock(); 538 return c; 539 } 540 } 541 542 rcu_read_unlock(); 543 544 return NULL; 545 } 546 547 void hci_acl_disconn(struct hci_conn *conn, __u8 reason); 548 void hci_setup_sync(struct hci_conn *conn, __u16 handle); 549 void hci_sco_setup(struct hci_conn *conn, __u8 status); 550 551 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst); 552 int hci_conn_del(struct hci_conn *conn); 553 void hci_conn_hash_flush(struct hci_dev *hdev); 554 void hci_conn_check_pending(struct hci_dev *hdev); 555 556 struct hci_chan *hci_chan_create(struct hci_conn *conn); 557 void hci_chan_del(struct hci_chan *chan); 558 void hci_chan_list_flush(struct hci_conn *conn); 559 560 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, 561 __u8 dst_type, __u8 sec_level, __u8 auth_type); 562 int hci_conn_check_link_mode(struct hci_conn *conn); 563 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 564 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type); 565 int hci_conn_change_link_key(struct hci_conn *conn); 566 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 567 568 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 569 570 void hci_conn_hold_device(struct hci_conn *conn); 571 void hci_conn_put_device(struct hci_conn *conn); 572 573 static inline void hci_conn_hold(struct hci_conn *conn) 574 { 575 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 576 577 atomic_inc(&conn->refcnt); 578 cancel_delayed_work(&conn->disc_work); 579 } 580 581 static inline void hci_conn_put(struct hci_conn *conn) 582 { 583 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 584 585 if (atomic_dec_and_test(&conn->refcnt)) { 586 unsigned long timeo; 587 if (conn->type == ACL_LINK || conn->type == LE_LINK) { 588 del_timer(&conn->idle_timer); 589 if (conn->state == BT_CONNECTED) { 590 timeo = conn->disc_timeout; 591 if (!conn->out) 592 timeo *= 2; 593 } else { 594 timeo = msecs_to_jiffies(10); 595 } 596 } else { 597 timeo = msecs_to_jiffies(10); 598 } 599 cancel_delayed_work(&conn->disc_work); 600 queue_delayed_work(conn->hdev->workqueue, 601 &conn->disc_work, timeo); 602 } 603 } 604 605 /* ----- HCI Devices ----- */ 606 static inline void hci_dev_put(struct hci_dev *d) 607 { 608 BT_DBG("%s orig refcnt %d", d->name, 609 atomic_read(&d->dev.kobj.kref.refcount)); 610 611 put_device(&d->dev); 612 } 613 614 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 615 { 616 BT_DBG("%s orig refcnt %d", d->name, 617 atomic_read(&d->dev.kobj.kref.refcount)); 618 619 get_device(&d->dev); 620 return d; 621 } 622 623 #define hci_dev_lock(d) mutex_lock(&d->lock) 624 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 625 626 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 627 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 628 629 static inline void *hci_get_drvdata(struct hci_dev *hdev) 630 { 631 return dev_get_drvdata(&hdev->dev); 632 } 633 634 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 635 { 636 dev_set_drvdata(&hdev->dev, data); 637 } 638 639 /* hci_dev_list shall be locked */ 640 static inline uint8_t __hci_num_ctrl(void) 641 { 642 uint8_t count = 0; 643 struct list_head *p; 644 645 list_for_each(p, &hci_dev_list) { 646 count++; 647 } 648 649 return count; 650 } 651 652 struct hci_dev *hci_dev_get(int index); 653 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst); 654 655 struct hci_dev *hci_alloc_dev(void); 656 void hci_free_dev(struct hci_dev *hdev); 657 int hci_register_dev(struct hci_dev *hdev); 658 void hci_unregister_dev(struct hci_dev *hdev); 659 int hci_suspend_dev(struct hci_dev *hdev); 660 int hci_resume_dev(struct hci_dev *hdev); 661 int hci_dev_open(__u16 dev); 662 int hci_dev_close(__u16 dev); 663 int hci_dev_reset(__u16 dev); 664 int hci_dev_reset_stat(__u16 dev); 665 int hci_dev_cmd(unsigned int cmd, void __user *arg); 666 int hci_get_dev_list(void __user *arg); 667 int hci_get_dev_info(void __user *arg); 668 int hci_get_conn_list(void __user *arg); 669 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 670 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 671 int hci_inquiry(void __user *arg); 672 673 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, 674 bdaddr_t *bdaddr); 675 int hci_blacklist_clear(struct hci_dev *hdev); 676 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 677 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 678 679 int hci_uuids_clear(struct hci_dev *hdev); 680 681 int hci_link_keys_clear(struct hci_dev *hdev); 682 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 683 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, 684 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len); 685 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]); 686 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, 687 int new_key, u8 authenticated, u8 tk[16], u8 enc_size, 688 __le16 ediv, u8 rand[8]); 689 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 690 u8 addr_type); 691 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr); 692 int hci_smp_ltks_clear(struct hci_dev *hdev); 693 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 694 695 int hci_remote_oob_data_clear(struct hci_dev *hdev); 696 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 697 bdaddr_t *bdaddr); 698 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, 699 u8 *randomizer); 700 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr); 701 702 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 703 704 int hci_recv_frame(struct sk_buff *skb); 705 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count); 706 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count); 707 708 void hci_init_sysfs(struct hci_dev *hdev); 709 int hci_add_sysfs(struct hci_dev *hdev); 710 void hci_del_sysfs(struct hci_dev *hdev); 711 void hci_conn_init_sysfs(struct hci_conn *conn); 712 void hci_conn_add_sysfs(struct hci_conn *conn); 713 void hci_conn_del_sysfs(struct hci_conn *conn); 714 715 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 716 717 /* ----- LMP capabilities ----- */ 718 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH) 719 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT) 720 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF) 721 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR) 722 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO) 723 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR) 724 #define lmp_no_flush_capable(dev) ((dev)->features[6] & LMP_NO_FLUSH) 725 #define lmp_le_capable(dev) ((dev)->features[4] & LMP_LE) 726 #define lmp_bredr_capable(dev) (!((dev)->features[4] & LMP_NO_BREDR)) 727 728 /* ----- Extended LMP capabilities ----- */ 729 #define lmp_host_le_capable(dev) ((dev)->host_features[0] & LMP_HOST_LE) 730 731 /* ----- HCI protocols ----- */ 732 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 733 __u8 type) 734 { 735 switch (type) { 736 case ACL_LINK: 737 return l2cap_connect_ind(hdev, bdaddr); 738 739 case SCO_LINK: 740 case ESCO_LINK: 741 return sco_connect_ind(hdev, bdaddr); 742 743 default: 744 BT_ERR("unknown link type %d", type); 745 return -EINVAL; 746 } 747 } 748 749 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status) 750 { 751 switch (conn->type) { 752 case ACL_LINK: 753 case LE_LINK: 754 l2cap_connect_cfm(conn, status); 755 break; 756 757 case SCO_LINK: 758 case ESCO_LINK: 759 sco_connect_cfm(conn, status); 760 break; 761 762 default: 763 BT_ERR("unknown link type %d", conn->type); 764 break; 765 } 766 767 if (conn->connect_cfm_cb) 768 conn->connect_cfm_cb(conn, status); 769 } 770 771 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 772 { 773 if (conn->type != ACL_LINK && conn->type != LE_LINK) 774 return HCI_ERROR_REMOTE_USER_TERM; 775 776 return l2cap_disconn_ind(conn); 777 } 778 779 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason) 780 { 781 switch (conn->type) { 782 case ACL_LINK: 783 case LE_LINK: 784 l2cap_disconn_cfm(conn, reason); 785 break; 786 787 case SCO_LINK: 788 case ESCO_LINK: 789 sco_disconn_cfm(conn, reason); 790 break; 791 792 default: 793 BT_ERR("unknown link type %d", conn->type); 794 break; 795 } 796 797 if (conn->disconn_cfm_cb) 798 conn->disconn_cfm_cb(conn, reason); 799 } 800 801 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status) 802 { 803 __u8 encrypt; 804 805 if (conn->type != ACL_LINK && conn->type != LE_LINK) 806 return; 807 808 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 809 return; 810 811 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00; 812 l2cap_security_cfm(conn, status, encrypt); 813 814 if (conn->security_cfm_cb) 815 conn->security_cfm_cb(conn, status); 816 } 817 818 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, 819 __u8 encrypt) 820 { 821 if (conn->type != ACL_LINK && conn->type != LE_LINK) 822 return; 823 824 l2cap_security_cfm(conn, status, encrypt); 825 826 if (conn->security_cfm_cb) 827 conn->security_cfm_cb(conn, status); 828 } 829 830 /* ----- HCI callbacks ----- */ 831 struct hci_cb { 832 struct list_head list; 833 834 char *name; 835 836 void (*security_cfm) (struct hci_conn *conn, __u8 status, 837 __u8 encrypt); 838 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 839 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 840 }; 841 842 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 843 { 844 struct list_head *p; 845 __u8 encrypt; 846 847 hci_proto_auth_cfm(conn, status); 848 849 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 850 return; 851 852 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00; 853 854 read_lock(&hci_cb_list_lock); 855 list_for_each(p, &hci_cb_list) { 856 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 857 if (cb->security_cfm) 858 cb->security_cfm(conn, status, encrypt); 859 } 860 read_unlock(&hci_cb_list_lock); 861 } 862 863 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, 864 __u8 encrypt) 865 { 866 struct list_head *p; 867 868 if (conn->sec_level == BT_SECURITY_SDP) 869 conn->sec_level = BT_SECURITY_LOW; 870 871 if (conn->pending_sec_level > conn->sec_level) 872 conn->sec_level = conn->pending_sec_level; 873 874 hci_proto_encrypt_cfm(conn, status, encrypt); 875 876 read_lock(&hci_cb_list_lock); 877 list_for_each(p, &hci_cb_list) { 878 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 879 if (cb->security_cfm) 880 cb->security_cfm(conn, status, encrypt); 881 } 882 read_unlock(&hci_cb_list_lock); 883 } 884 885 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 886 { 887 struct list_head *p; 888 889 read_lock(&hci_cb_list_lock); 890 list_for_each(p, &hci_cb_list) { 891 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 892 if (cb->key_change_cfm) 893 cb->key_change_cfm(conn, status); 894 } 895 read_unlock(&hci_cb_list_lock); 896 } 897 898 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 899 __u8 role) 900 { 901 struct list_head *p; 902 903 read_lock(&hci_cb_list_lock); 904 list_for_each(p, &hci_cb_list) { 905 struct hci_cb *cb = list_entry(p, struct hci_cb, list); 906 if (cb->role_switch_cfm) 907 cb->role_switch_cfm(conn, status, role); 908 } 909 read_unlock(&hci_cb_list_lock); 910 } 911 912 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type) 913 { 914 size_t parsed = 0; 915 916 if (data_len < 2) 917 return false; 918 919 while (parsed < data_len - 1) { 920 u8 field_len = data[0]; 921 922 if (field_len == 0) 923 break; 924 925 parsed += field_len + 1; 926 927 if (parsed > data_len) 928 break; 929 930 if (data[1] == type) 931 return true; 932 933 data += field_len + 1; 934 } 935 936 return false; 937 } 938 939 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 940 { 941 size_t parsed = 0; 942 943 while (parsed < eir_len) { 944 u8 field_len = eir[0]; 945 946 if (field_len == 0) 947 return parsed; 948 949 parsed += field_len + 1; 950 eir += field_len + 1; 951 } 952 953 return eir_len; 954 } 955 956 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data, 957 u8 data_len) 958 { 959 eir[eir_len++] = sizeof(type) + data_len; 960 eir[eir_len++] = type; 961 memcpy(&eir[eir_len], data, data_len); 962 eir_len += data_len; 963 964 return eir_len; 965 } 966 967 int hci_register_cb(struct hci_cb *hcb); 968 int hci_unregister_cb(struct hci_cb *hcb); 969 970 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param); 971 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 972 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 973 974 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 975 976 /* ----- HCI Sockets ----- */ 977 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 978 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk); 979 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 980 981 void hci_sock_dev_event(struct hci_dev *hdev, int event); 982 983 /* Management interface */ 984 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 985 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 986 BIT(BDADDR_LE_RANDOM)) 987 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 988 BIT(BDADDR_LE_PUBLIC) | \ 989 BIT(BDADDR_LE_RANDOM)) 990 991 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len); 992 int mgmt_index_added(struct hci_dev *hdev); 993 int mgmt_index_removed(struct hci_dev *hdev); 994 int mgmt_powered(struct hci_dev *hdev, u8 powered); 995 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable); 996 int mgmt_connectable(struct hci_dev *hdev, u8 connectable); 997 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status); 998 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 999 bool persistent); 1000 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1001 u8 addr_type, u32 flags, u8 *name, u8 name_len, 1002 u8 *dev_class); 1003 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 1004 u8 link_type, u8 addr_type, u8 reason); 1005 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 1006 u8 link_type, u8 addr_type, u8 status); 1007 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1008 u8 addr_type, u8 status); 1009 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 1010 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1011 u8 status); 1012 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1013 u8 status); 1014 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1015 u8 link_type, u8 addr_type, __le32 value, 1016 u8 confirm_hint); 1017 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1018 u8 link_type, u8 addr_type, u8 status); 1019 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1020 u8 link_type, u8 addr_type, u8 status); 1021 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1022 u8 link_type, u8 addr_type); 1023 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1024 u8 link_type, u8 addr_type, u8 status); 1025 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1026 u8 link_type, u8 addr_type, u8 status); 1027 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 1028 u8 link_type, u8 addr_type, u32 passkey, 1029 u8 entered); 1030 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1031 u8 addr_type, u8 status); 1032 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 1033 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1034 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 1035 u8 status); 1036 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 1037 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash, 1038 u8 *randomizer, u8 status); 1039 int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1040 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1041 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name, 1042 u8 ssp, u8 *eir, u16 eir_len); 1043 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1044 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 1045 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status); 1046 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status); 1047 int mgmt_discovering(struct hci_dev *hdev, u8 discovering); 1048 int mgmt_interleaved_discovery(struct hci_dev *hdev); 1049 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1050 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1051 bool mgmt_valid_hdev(struct hci_dev *hdev); 1052 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent); 1053 1054 /* HCI info for socket */ 1055 #define hci_pi(sk) ((struct hci_pinfo *) sk) 1056 1057 struct hci_pinfo { 1058 struct bt_sock bt; 1059 struct hci_dev *hdev; 1060 struct hci_filter filter; 1061 __u32 cmsg_mask; 1062 unsigned short channel; 1063 }; 1064 1065 /* HCI security filter */ 1066 #define HCI_SFLT_MAX_OGF 5 1067 1068 struct hci_sec_filter { 1069 __u32 type_mask; 1070 __u32 event_mask[2]; 1071 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; 1072 }; 1073 1074 /* ----- HCI requests ----- */ 1075 #define HCI_REQ_DONE 0 1076 #define HCI_REQ_PEND 1 1077 #define HCI_REQ_CANCELED 2 1078 1079 #define hci_req_lock(d) mutex_lock(&d->req_lock) 1080 #define hci_req_unlock(d) mutex_unlock(&d->req_lock) 1081 1082 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result); 1083 1084 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, 1085 u16 latency, u16 to_multiplier); 1086 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8], 1087 __u8 ltk[16]); 1088 int hci_do_inquiry(struct hci_dev *hdev, u8 length); 1089 int hci_cancel_inquiry(struct hci_dev *hdev); 1090 int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window, 1091 int timeout); 1092 int hci_cancel_le_scan(struct hci_dev *hdev); 1093 1094 u8 bdaddr_to_le(u8 bdaddr_type); 1095 1096 #endif /* __HCI_CORE_H */ 1097