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 #include <net/bluetooth/hci_sock.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 bdaddr_t last_adv_addr; 73 u8 last_adv_addr_type; 74 s8 last_adv_rssi; 75 u32 last_adv_flags; 76 u8 last_adv_data[HCI_MAX_AD_LENGTH]; 77 u8 last_adv_data_len; 78 bool report_invalid_rssi; 79 s8 rssi; 80 u16 uuid_count; 81 u8 (*uuids)[16]; 82 unsigned long scan_start; 83 unsigned long scan_duration; 84 }; 85 86 struct hci_conn_hash { 87 struct list_head list; 88 unsigned int acl_num; 89 unsigned int amp_num; 90 unsigned int sco_num; 91 unsigned int le_num; 92 unsigned int le_num_slave; 93 }; 94 95 struct bdaddr_list { 96 struct list_head list; 97 bdaddr_t bdaddr; 98 u8 bdaddr_type; 99 }; 100 101 struct bt_uuid { 102 struct list_head list; 103 u8 uuid[16]; 104 u8 size; 105 u8 svc_hint; 106 }; 107 108 struct smp_csrk { 109 bdaddr_t bdaddr; 110 u8 bdaddr_type; 111 u8 master; 112 u8 val[16]; 113 }; 114 115 struct smp_ltk { 116 struct list_head list; 117 struct rcu_head rcu; 118 bdaddr_t bdaddr; 119 u8 bdaddr_type; 120 u8 authenticated; 121 u8 type; 122 u8 enc_size; 123 __le16 ediv; 124 __le64 rand; 125 u8 val[16]; 126 }; 127 128 struct smp_irk { 129 struct list_head list; 130 struct rcu_head rcu; 131 bdaddr_t rpa; 132 bdaddr_t bdaddr; 133 u8 addr_type; 134 u8 val[16]; 135 }; 136 137 struct link_key { 138 struct list_head list; 139 struct rcu_head rcu; 140 bdaddr_t bdaddr; 141 u8 type; 142 u8 val[HCI_LINK_KEY_SIZE]; 143 u8 pin_len; 144 }; 145 146 struct oob_data { 147 struct list_head list; 148 bdaddr_t bdaddr; 149 u8 bdaddr_type; 150 u8 present; 151 u8 hash192[16]; 152 u8 rand192[16]; 153 u8 hash256[16]; 154 u8 rand256[16]; 155 }; 156 157 #define HCI_MAX_SHORT_NAME_LENGTH 10 158 159 /* Default LE RPA expiry time, 15 minutes */ 160 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 161 162 /* Default min/max age of connection information (1s/3s) */ 163 #define DEFAULT_CONN_INFO_MIN_AGE 1000 164 #define DEFAULT_CONN_INFO_MAX_AGE 3000 165 166 struct amp_assoc { 167 __u16 len; 168 __u16 offset; 169 __u16 rem_len; 170 __u16 len_so_far; 171 __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; 172 }; 173 174 #define HCI_MAX_PAGES 3 175 176 #define NUM_REASSEMBLY 4 177 struct hci_dev { 178 struct list_head list; 179 struct mutex lock; 180 181 char name[8]; 182 unsigned long flags; 183 __u16 id; 184 __u8 bus; 185 __u8 dev_type; 186 bdaddr_t bdaddr; 187 bdaddr_t setup_addr; 188 bdaddr_t public_addr; 189 bdaddr_t random_addr; 190 bdaddr_t static_addr; 191 __u8 adv_addr_type; 192 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 193 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 194 __u8 eir[HCI_MAX_EIR_LENGTH]; 195 __u8 dev_class[3]; 196 __u8 major_class; 197 __u8 minor_class; 198 __u8 max_page; 199 __u8 features[HCI_MAX_PAGES][8]; 200 __u8 le_features[8]; 201 __u8 le_white_list_size; 202 __u8 le_states[8]; 203 __u8 commands[64]; 204 __u8 hci_ver; 205 __u16 hci_rev; 206 __u8 lmp_ver; 207 __u16 manufacturer; 208 __u16 lmp_subver; 209 __u16 voice_setting; 210 __u8 num_iac; 211 __u8 stored_max_keys; 212 __u8 stored_num_keys; 213 __u8 io_capability; 214 __s8 inq_tx_power; 215 __u16 page_scan_interval; 216 __u16 page_scan_window; 217 __u8 page_scan_type; 218 __u8 le_adv_channel_map; 219 __u16 le_adv_min_interval; 220 __u16 le_adv_max_interval; 221 __u8 le_scan_type; 222 __u16 le_scan_interval; 223 __u16 le_scan_window; 224 __u16 le_conn_min_interval; 225 __u16 le_conn_max_interval; 226 __u16 le_conn_latency; 227 __u16 le_supv_timeout; 228 __u16 le_def_tx_len; 229 __u16 le_def_tx_time; 230 __u16 le_max_tx_len; 231 __u16 le_max_tx_time; 232 __u16 le_max_rx_len; 233 __u16 le_max_rx_time; 234 __u16 discov_interleaved_timeout; 235 __u16 conn_info_min_age; 236 __u16 conn_info_max_age; 237 __u8 ssp_debug_mode; 238 __u8 hw_error_code; 239 __u32 clock; 240 241 __u16 devid_source; 242 __u16 devid_vendor; 243 __u16 devid_product; 244 __u16 devid_version; 245 246 __u16 pkt_type; 247 __u16 esco_type; 248 __u16 link_policy; 249 __u16 link_mode; 250 251 __u32 idle_timeout; 252 __u16 sniff_min_interval; 253 __u16 sniff_max_interval; 254 255 __u8 amp_status; 256 __u32 amp_total_bw; 257 __u32 amp_max_bw; 258 __u32 amp_min_latency; 259 __u32 amp_max_pdu; 260 __u8 amp_type; 261 __u16 amp_pal_cap; 262 __u16 amp_assoc_size; 263 __u32 amp_max_flush_to; 264 __u32 amp_be_flush_to; 265 266 struct amp_assoc loc_assoc; 267 268 __u8 flow_ctl_mode; 269 270 unsigned int auto_accept_delay; 271 272 unsigned long quirks; 273 274 atomic_t cmd_cnt; 275 unsigned int acl_cnt; 276 unsigned int sco_cnt; 277 unsigned int le_cnt; 278 279 unsigned int acl_mtu; 280 unsigned int sco_mtu; 281 unsigned int le_mtu; 282 unsigned int acl_pkts; 283 unsigned int sco_pkts; 284 unsigned int le_pkts; 285 286 __u16 block_len; 287 __u16 block_mtu; 288 __u16 num_blocks; 289 __u16 block_cnt; 290 291 unsigned long acl_last_tx; 292 unsigned long sco_last_tx; 293 unsigned long le_last_tx; 294 295 struct workqueue_struct *workqueue; 296 struct workqueue_struct *req_workqueue; 297 298 struct work_struct power_on; 299 struct delayed_work power_off; 300 struct work_struct error_reset; 301 302 __u16 discov_timeout; 303 struct delayed_work discov_off; 304 305 struct delayed_work service_cache; 306 307 struct delayed_work cmd_timer; 308 309 struct work_struct rx_work; 310 struct work_struct cmd_work; 311 struct work_struct tx_work; 312 313 struct sk_buff_head rx_q; 314 struct sk_buff_head raw_q; 315 struct sk_buff_head cmd_q; 316 317 struct sk_buff *recv_evt; 318 struct sk_buff *sent_cmd; 319 struct sk_buff *reassembly[NUM_REASSEMBLY]; 320 321 struct mutex req_lock; 322 wait_queue_head_t req_wait_q; 323 __u32 req_status; 324 __u32 req_result; 325 326 void *smp_data; 327 void *smp_bredr_data; 328 329 struct discovery_state discovery; 330 struct hci_conn_hash conn_hash; 331 332 struct list_head mgmt_pending; 333 struct list_head blacklist; 334 struct list_head whitelist; 335 struct list_head uuids; 336 struct list_head link_keys; 337 struct list_head long_term_keys; 338 struct list_head identity_resolving_keys; 339 struct list_head remote_oob_data; 340 struct list_head le_white_list; 341 struct list_head le_conn_params; 342 struct list_head pend_le_conns; 343 struct list_head pend_le_reports; 344 345 struct hci_dev_stats stat; 346 347 atomic_t promisc; 348 349 struct dentry *debugfs; 350 351 struct device dev; 352 353 struct rfkill *rfkill; 354 355 unsigned long dbg_flags; 356 unsigned long dev_flags; 357 358 struct delayed_work le_scan_disable; 359 struct delayed_work le_scan_restart; 360 361 __s8 adv_tx_power; 362 __u8 adv_data[HCI_MAX_AD_LENGTH]; 363 __u8 adv_data_len; 364 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; 365 __u8 scan_rsp_data_len; 366 367 __u8 irk[16]; 368 __u32 rpa_timeout; 369 struct delayed_work rpa_expired; 370 bdaddr_t rpa; 371 372 int (*open)(struct hci_dev *hdev); 373 int (*close)(struct hci_dev *hdev); 374 int (*flush)(struct hci_dev *hdev); 375 int (*setup)(struct hci_dev *hdev); 376 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 377 void (*notify)(struct hci_dev *hdev, unsigned int evt); 378 void (*hw_error)(struct hci_dev *hdev, u8 code); 379 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 380 }; 381 382 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 383 384 struct hci_conn { 385 struct list_head list; 386 387 atomic_t refcnt; 388 389 bdaddr_t dst; 390 __u8 dst_type; 391 bdaddr_t src; 392 __u8 src_type; 393 bdaddr_t init_addr; 394 __u8 init_addr_type; 395 bdaddr_t resp_addr; 396 __u8 resp_addr_type; 397 __u16 handle; 398 __u16 state; 399 __u8 mode; 400 __u8 type; 401 __u8 role; 402 bool out; 403 __u8 attempt; 404 __u8 dev_class[3]; 405 __u8 features[HCI_MAX_PAGES][8]; 406 __u16 pkt_type; 407 __u16 link_policy; 408 __u8 key_type; 409 __u8 auth_type; 410 __u8 sec_level; 411 __u8 pending_sec_level; 412 __u8 pin_length; 413 __u8 enc_key_size; 414 __u8 io_capability; 415 __u32 passkey_notify; 416 __u8 passkey_entered; 417 __u16 disc_timeout; 418 __u16 conn_timeout; 419 __u16 setting; 420 __u16 le_conn_min_interval; 421 __u16 le_conn_max_interval; 422 __u16 le_conn_interval; 423 __u16 le_conn_latency; 424 __u16 le_supv_timeout; 425 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 426 __u8 le_adv_data_len; 427 __s8 rssi; 428 __s8 tx_power; 429 __s8 max_tx_power; 430 unsigned long flags; 431 432 __u32 clock; 433 __u16 clock_accuracy; 434 435 unsigned long conn_info_timestamp; 436 437 __u8 remote_cap; 438 __u8 remote_auth; 439 __u8 remote_id; 440 441 unsigned int sent; 442 443 struct sk_buff_head data_q; 444 struct list_head chan_list; 445 446 struct delayed_work disc_work; 447 struct delayed_work auto_accept_work; 448 struct delayed_work idle_work; 449 struct delayed_work le_conn_timeout; 450 451 struct device dev; 452 struct dentry *debugfs; 453 454 struct hci_dev *hdev; 455 void *l2cap_data; 456 void *sco_data; 457 struct amp_mgr *amp_mgr; 458 459 struct hci_conn *link; 460 461 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 462 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 463 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 464 }; 465 466 struct hci_chan { 467 struct list_head list; 468 __u16 handle; 469 struct hci_conn *conn; 470 struct sk_buff_head data_q; 471 unsigned int sent; 472 __u8 state; 473 }; 474 475 struct hci_conn_params { 476 struct list_head list; 477 struct list_head action; 478 479 bdaddr_t addr; 480 u8 addr_type; 481 482 u16 conn_min_interval; 483 u16 conn_max_interval; 484 u16 conn_latency; 485 u16 supervision_timeout; 486 487 enum { 488 HCI_AUTO_CONN_DISABLED, 489 HCI_AUTO_CONN_REPORT, 490 HCI_AUTO_CONN_DIRECT, 491 HCI_AUTO_CONN_ALWAYS, 492 HCI_AUTO_CONN_LINK_LOSS, 493 } auto_connect; 494 495 struct hci_conn *conn; 496 }; 497 498 extern struct list_head hci_dev_list; 499 extern struct list_head hci_cb_list; 500 extern rwlock_t hci_dev_list_lock; 501 extern rwlock_t hci_cb_list_lock; 502 503 /* ----- HCI interface to upper protocols ----- */ 504 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 505 void l2cap_connect_cfm(struct hci_conn *hcon, u8 status); 506 int l2cap_disconn_ind(struct hci_conn *hcon); 507 void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason); 508 int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt); 509 int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 510 511 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 512 void sco_connect_cfm(struct hci_conn *hcon, __u8 status); 513 void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason); 514 int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 515 516 /* ----- Inquiry cache ----- */ 517 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 518 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 519 520 static inline void discovery_init(struct hci_dev *hdev) 521 { 522 hdev->discovery.state = DISCOVERY_STOPPED; 523 INIT_LIST_HEAD(&hdev->discovery.all); 524 INIT_LIST_HEAD(&hdev->discovery.unknown); 525 INIT_LIST_HEAD(&hdev->discovery.resolve); 526 hdev->discovery.report_invalid_rssi = true; 527 hdev->discovery.rssi = HCI_RSSI_INVALID; 528 } 529 530 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 531 { 532 hdev->discovery.report_invalid_rssi = true; 533 hdev->discovery.rssi = HCI_RSSI_INVALID; 534 hdev->discovery.uuid_count = 0; 535 kfree(hdev->discovery.uuids); 536 hdev->discovery.uuids = NULL; 537 hdev->discovery.scan_start = 0; 538 hdev->discovery.scan_duration = 0; 539 } 540 541 bool hci_discovery_active(struct hci_dev *hdev); 542 543 void hci_discovery_set_state(struct hci_dev *hdev, int state); 544 545 static inline int inquiry_cache_empty(struct hci_dev *hdev) 546 { 547 return list_empty(&hdev->discovery.all); 548 } 549 550 static inline long inquiry_cache_age(struct hci_dev *hdev) 551 { 552 struct discovery_state *c = &hdev->discovery; 553 return jiffies - c->timestamp; 554 } 555 556 static inline long inquiry_entry_age(struct inquiry_entry *e) 557 { 558 return jiffies - e->timestamp; 559 } 560 561 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 562 bdaddr_t *bdaddr); 563 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 564 bdaddr_t *bdaddr); 565 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 566 bdaddr_t *bdaddr, 567 int state); 568 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 569 struct inquiry_entry *ie); 570 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 571 bool name_known); 572 void hci_inquiry_cache_flush(struct hci_dev *hdev); 573 574 /* ----- HCI Connections ----- */ 575 enum { 576 HCI_CONN_AUTH_PEND, 577 HCI_CONN_REAUTH_PEND, 578 HCI_CONN_ENCRYPT_PEND, 579 HCI_CONN_RSWITCH_PEND, 580 HCI_CONN_MODE_CHANGE_PEND, 581 HCI_CONN_SCO_SETUP_PEND, 582 HCI_CONN_MGMT_CONNECTED, 583 HCI_CONN_SSP_ENABLED, 584 HCI_CONN_SC_ENABLED, 585 HCI_CONN_AES_CCM, 586 HCI_CONN_POWER_SAVE, 587 HCI_CONN_REMOTE_OOB, 588 HCI_CONN_FLUSH_KEY, 589 HCI_CONN_ENCRYPT, 590 HCI_CONN_AUTH, 591 HCI_CONN_SECURE, 592 HCI_CONN_FIPS, 593 HCI_CONN_STK_ENCRYPT, 594 HCI_CONN_AUTH_INITIATOR, 595 HCI_CONN_DROP, 596 HCI_CONN_PARAM_REMOVAL_PEND, 597 HCI_CONN_NEW_LINK_KEY, 598 }; 599 600 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 601 { 602 struct hci_dev *hdev = conn->hdev; 603 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) && 604 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 605 } 606 607 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 608 { 609 struct hci_dev *hdev = conn->hdev; 610 return test_bit(HCI_SC_ENABLED, &hdev->dev_flags) && 611 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 612 } 613 614 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 615 { 616 struct hci_conn_hash *h = &hdev->conn_hash; 617 list_add_rcu(&c->list, &h->list); 618 switch (c->type) { 619 case ACL_LINK: 620 h->acl_num++; 621 break; 622 case AMP_LINK: 623 h->amp_num++; 624 break; 625 case LE_LINK: 626 h->le_num++; 627 if (c->role == HCI_ROLE_SLAVE) 628 h->le_num_slave++; 629 break; 630 case SCO_LINK: 631 case ESCO_LINK: 632 h->sco_num++; 633 break; 634 } 635 } 636 637 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 638 { 639 struct hci_conn_hash *h = &hdev->conn_hash; 640 641 list_del_rcu(&c->list); 642 synchronize_rcu(); 643 644 switch (c->type) { 645 case ACL_LINK: 646 h->acl_num--; 647 break; 648 case AMP_LINK: 649 h->amp_num--; 650 break; 651 case LE_LINK: 652 h->le_num--; 653 if (c->role == HCI_ROLE_SLAVE) 654 h->le_num_slave--; 655 break; 656 case SCO_LINK: 657 case ESCO_LINK: 658 h->sco_num--; 659 break; 660 } 661 } 662 663 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 664 { 665 struct hci_conn_hash *h = &hdev->conn_hash; 666 switch (type) { 667 case ACL_LINK: 668 return h->acl_num; 669 case AMP_LINK: 670 return h->amp_num; 671 case LE_LINK: 672 return h->le_num; 673 case SCO_LINK: 674 case ESCO_LINK: 675 return h->sco_num; 676 default: 677 return 0; 678 } 679 } 680 681 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 682 { 683 struct hci_conn_hash *c = &hdev->conn_hash; 684 685 return c->acl_num + c->amp_num + c->sco_num + c->le_num; 686 } 687 688 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 689 { 690 struct hci_conn_hash *h = &hdev->conn_hash; 691 struct hci_conn *c; 692 __u8 type = INVALID_LINK; 693 694 rcu_read_lock(); 695 696 list_for_each_entry_rcu(c, &h->list, list) { 697 if (c->handle == handle) { 698 type = c->type; 699 break; 700 } 701 } 702 703 rcu_read_unlock(); 704 705 return type; 706 } 707 708 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 709 __u16 handle) 710 { 711 struct hci_conn_hash *h = &hdev->conn_hash; 712 struct hci_conn *c; 713 714 rcu_read_lock(); 715 716 list_for_each_entry_rcu(c, &h->list, list) { 717 if (c->handle == handle) { 718 rcu_read_unlock(); 719 return c; 720 } 721 } 722 rcu_read_unlock(); 723 724 return NULL; 725 } 726 727 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 728 __u8 type, bdaddr_t *ba) 729 { 730 struct hci_conn_hash *h = &hdev->conn_hash; 731 struct hci_conn *c; 732 733 rcu_read_lock(); 734 735 list_for_each_entry_rcu(c, &h->list, list) { 736 if (c->type == type && !bacmp(&c->dst, ba)) { 737 rcu_read_unlock(); 738 return c; 739 } 740 } 741 742 rcu_read_unlock(); 743 744 return NULL; 745 } 746 747 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 748 __u8 type, __u16 state) 749 { 750 struct hci_conn_hash *h = &hdev->conn_hash; 751 struct hci_conn *c; 752 753 rcu_read_lock(); 754 755 list_for_each_entry_rcu(c, &h->list, list) { 756 if (c->type == type && c->state == state) { 757 rcu_read_unlock(); 758 return c; 759 } 760 } 761 762 rcu_read_unlock(); 763 764 return NULL; 765 } 766 767 int hci_disconnect(struct hci_conn *conn, __u8 reason); 768 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 769 void hci_sco_setup(struct hci_conn *conn, __u8 status); 770 771 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 772 u8 role); 773 int hci_conn_del(struct hci_conn *conn); 774 void hci_conn_hash_flush(struct hci_dev *hdev); 775 void hci_conn_check_pending(struct hci_dev *hdev); 776 777 struct hci_chan *hci_chan_create(struct hci_conn *conn); 778 void hci_chan_del(struct hci_chan *chan); 779 void hci_chan_list_flush(struct hci_conn *conn); 780 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 781 782 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 783 u8 dst_type, u8 sec_level, u16 conn_timeout, 784 u8 role); 785 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 786 u8 sec_level, u8 auth_type); 787 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 788 __u16 setting); 789 int hci_conn_check_link_mode(struct hci_conn *conn); 790 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 791 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 792 bool initiator); 793 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 794 795 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 796 797 void hci_le_conn_failed(struct hci_conn *conn, u8 status); 798 799 /* 800 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 801 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 802 * working or anything else. They just guarantee that the object is available 803 * and can be dereferenced. So you can use its locks, local variables and any 804 * other constant data. 805 * Before accessing runtime data, you _must_ lock the object and then check that 806 * it is still running. As soon as you release the locks, the connection might 807 * get dropped, though. 808 * 809 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 810 * how long the underlying connection is held. So every channel that runs on the 811 * hci_conn object calls this to prevent the connection from disappearing. As 812 * long as you hold a device, you must also guarantee that you have a valid 813 * reference to the device via hci_conn_get() (or the initial reference from 814 * hci_conn_add()). 815 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 816 * break because nobody cares for that. But this means, we cannot use 817 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 818 */ 819 820 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 821 { 822 get_device(&conn->dev); 823 return conn; 824 } 825 826 static inline void hci_conn_put(struct hci_conn *conn) 827 { 828 put_device(&conn->dev); 829 } 830 831 static inline void hci_conn_hold(struct hci_conn *conn) 832 { 833 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 834 835 atomic_inc(&conn->refcnt); 836 cancel_delayed_work(&conn->disc_work); 837 } 838 839 static inline void hci_conn_drop(struct hci_conn *conn) 840 { 841 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 842 843 if (atomic_dec_and_test(&conn->refcnt)) { 844 unsigned long timeo; 845 846 switch (conn->type) { 847 case ACL_LINK: 848 case LE_LINK: 849 cancel_delayed_work(&conn->idle_work); 850 if (conn->state == BT_CONNECTED) { 851 timeo = conn->disc_timeout; 852 if (!conn->out) 853 timeo *= 2; 854 } else { 855 timeo = 0; 856 } 857 break; 858 859 case AMP_LINK: 860 timeo = conn->disc_timeout; 861 break; 862 863 default: 864 timeo = 0; 865 break; 866 } 867 868 cancel_delayed_work(&conn->disc_work); 869 queue_delayed_work(conn->hdev->workqueue, 870 &conn->disc_work, timeo); 871 } 872 } 873 874 /* ----- HCI Devices ----- */ 875 static inline void hci_dev_put(struct hci_dev *d) 876 { 877 BT_DBG("%s orig refcnt %d", d->name, 878 atomic_read(&d->dev.kobj.kref.refcount)); 879 880 put_device(&d->dev); 881 } 882 883 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 884 { 885 BT_DBG("%s orig refcnt %d", d->name, 886 atomic_read(&d->dev.kobj.kref.refcount)); 887 888 get_device(&d->dev); 889 return d; 890 } 891 892 #define hci_dev_lock(d) mutex_lock(&d->lock) 893 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 894 895 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 896 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 897 898 static inline void *hci_get_drvdata(struct hci_dev *hdev) 899 { 900 return dev_get_drvdata(&hdev->dev); 901 } 902 903 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 904 { 905 dev_set_drvdata(&hdev->dev, data); 906 } 907 908 struct hci_dev *hci_dev_get(int index); 909 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src); 910 911 struct hci_dev *hci_alloc_dev(void); 912 void hci_free_dev(struct hci_dev *hdev); 913 int hci_register_dev(struct hci_dev *hdev); 914 void hci_unregister_dev(struct hci_dev *hdev); 915 int hci_suspend_dev(struct hci_dev *hdev); 916 int hci_resume_dev(struct hci_dev *hdev); 917 int hci_reset_dev(struct hci_dev *hdev); 918 int hci_dev_open(__u16 dev); 919 int hci_dev_close(__u16 dev); 920 int hci_dev_reset(__u16 dev); 921 int hci_dev_reset_stat(__u16 dev); 922 int hci_dev_cmd(unsigned int cmd, void __user *arg); 923 int hci_get_dev_list(void __user *arg); 924 int hci_get_dev_info(void __user *arg); 925 int hci_get_conn_list(void __user *arg); 926 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 927 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 928 int hci_inquiry(void __user *arg); 929 930 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 931 bdaddr_t *bdaddr, u8 type); 932 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 933 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 934 void hci_bdaddr_list_clear(struct list_head *list); 935 936 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 937 bdaddr_t *addr, u8 addr_type); 938 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 939 bdaddr_t *addr, u8 addr_type); 940 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 941 void hci_conn_params_clear_all(struct hci_dev *hdev); 942 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 943 944 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 945 bdaddr_t *addr, 946 u8 addr_type); 947 948 void hci_uuids_clear(struct hci_dev *hdev); 949 950 void hci_link_keys_clear(struct hci_dev *hdev); 951 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 952 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 953 bdaddr_t *bdaddr, u8 *val, u8 type, 954 u8 pin_len, bool *persistent); 955 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 956 u8 addr_type, u8 type, u8 authenticated, 957 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 958 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 959 u8 addr_type, u8 role); 960 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 961 void hci_smp_ltks_clear(struct hci_dev *hdev); 962 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 963 964 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 965 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 966 u8 addr_type); 967 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 968 u8 addr_type, u8 val[16], bdaddr_t *rpa); 969 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 970 void hci_smp_irks_clear(struct hci_dev *hdev); 971 972 void hci_remote_oob_data_clear(struct hci_dev *hdev); 973 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 974 bdaddr_t *bdaddr, u8 bdaddr_type); 975 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 976 u8 bdaddr_type, u8 *hash192, u8 *rand192, 977 u8 *hash256, u8 *rand256); 978 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 979 u8 bdaddr_type); 980 981 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 982 983 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 984 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count); 985 986 void hci_init_sysfs(struct hci_dev *hdev); 987 void hci_conn_init_sysfs(struct hci_conn *conn); 988 void hci_conn_add_sysfs(struct hci_conn *conn); 989 void hci_conn_del_sysfs(struct hci_conn *conn); 990 991 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 992 993 /* ----- LMP capabilities ----- */ 994 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 995 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 996 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 997 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 998 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 999 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1000 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1001 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1002 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1003 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1004 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1005 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1006 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1007 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1008 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1009 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1010 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1011 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1012 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1013 1014 /* ----- Extended LMP capabilities ----- */ 1015 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER) 1016 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE) 1017 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1018 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1019 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1020 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1021 1022 /* ----- Host capabilities ----- */ 1023 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1024 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1025 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1026 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1027 1028 #define hdev_is_powered(hdev) (test_bit(HCI_UP, &hdev->flags) && \ 1029 !test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) 1030 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1031 test_bit(HCI_SC_ENABLED, &(dev)->dev_flags)) 1032 1033 /* ----- HCI protocols ----- */ 1034 #define HCI_PROTO_DEFER 0x01 1035 1036 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1037 __u8 type, __u8 *flags) 1038 { 1039 switch (type) { 1040 case ACL_LINK: 1041 return l2cap_connect_ind(hdev, bdaddr); 1042 1043 case SCO_LINK: 1044 case ESCO_LINK: 1045 return sco_connect_ind(hdev, bdaddr, flags); 1046 1047 default: 1048 BT_ERR("unknown link type %d", type); 1049 return -EINVAL; 1050 } 1051 } 1052 1053 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status) 1054 { 1055 switch (conn->type) { 1056 case ACL_LINK: 1057 case LE_LINK: 1058 l2cap_connect_cfm(conn, status); 1059 break; 1060 1061 case SCO_LINK: 1062 case ESCO_LINK: 1063 sco_connect_cfm(conn, status); 1064 break; 1065 1066 default: 1067 BT_ERR("unknown link type %d", conn->type); 1068 break; 1069 } 1070 1071 if (conn->connect_cfm_cb) 1072 conn->connect_cfm_cb(conn, status); 1073 } 1074 1075 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1076 { 1077 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1078 return HCI_ERROR_REMOTE_USER_TERM; 1079 1080 return l2cap_disconn_ind(conn); 1081 } 1082 1083 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason) 1084 { 1085 switch (conn->type) { 1086 case ACL_LINK: 1087 case LE_LINK: 1088 l2cap_disconn_cfm(conn, reason); 1089 break; 1090 1091 case SCO_LINK: 1092 case ESCO_LINK: 1093 sco_disconn_cfm(conn, reason); 1094 break; 1095 1096 /* L2CAP would be handled for BREDR chan */ 1097 case AMP_LINK: 1098 break; 1099 1100 default: 1101 BT_ERR("unknown link type %d", conn->type); 1102 break; 1103 } 1104 1105 if (conn->disconn_cfm_cb) 1106 conn->disconn_cfm_cb(conn, reason); 1107 } 1108 1109 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status) 1110 { 1111 __u8 encrypt; 1112 1113 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1114 return; 1115 1116 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1117 return; 1118 1119 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1120 l2cap_security_cfm(conn, status, encrypt); 1121 1122 if (conn->security_cfm_cb) 1123 conn->security_cfm_cb(conn, status); 1124 } 1125 1126 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, 1127 __u8 encrypt) 1128 { 1129 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1130 return; 1131 1132 l2cap_security_cfm(conn, status, encrypt); 1133 1134 if (conn->security_cfm_cb) 1135 conn->security_cfm_cb(conn, status); 1136 } 1137 1138 /* ----- HCI callbacks ----- */ 1139 struct hci_cb { 1140 struct list_head list; 1141 1142 char *name; 1143 1144 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1145 __u8 encrypt); 1146 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1147 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1148 }; 1149 1150 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1151 { 1152 struct hci_cb *cb; 1153 __u8 encrypt; 1154 1155 hci_proto_auth_cfm(conn, status); 1156 1157 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1158 return; 1159 1160 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1161 1162 read_lock(&hci_cb_list_lock); 1163 list_for_each_entry(cb, &hci_cb_list, list) { 1164 if (cb->security_cfm) 1165 cb->security_cfm(conn, status, encrypt); 1166 } 1167 read_unlock(&hci_cb_list_lock); 1168 } 1169 1170 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, 1171 __u8 encrypt) 1172 { 1173 struct hci_cb *cb; 1174 1175 if (conn->sec_level == BT_SECURITY_SDP) 1176 conn->sec_level = BT_SECURITY_LOW; 1177 1178 if (conn->pending_sec_level > conn->sec_level) 1179 conn->sec_level = conn->pending_sec_level; 1180 1181 hci_proto_encrypt_cfm(conn, status, encrypt); 1182 1183 read_lock(&hci_cb_list_lock); 1184 list_for_each_entry(cb, &hci_cb_list, list) { 1185 if (cb->security_cfm) 1186 cb->security_cfm(conn, status, encrypt); 1187 } 1188 read_unlock(&hci_cb_list_lock); 1189 } 1190 1191 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1192 { 1193 struct hci_cb *cb; 1194 1195 read_lock(&hci_cb_list_lock); 1196 list_for_each_entry(cb, &hci_cb_list, list) { 1197 if (cb->key_change_cfm) 1198 cb->key_change_cfm(conn, status); 1199 } 1200 read_unlock(&hci_cb_list_lock); 1201 } 1202 1203 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1204 __u8 role) 1205 { 1206 struct hci_cb *cb; 1207 1208 read_lock(&hci_cb_list_lock); 1209 list_for_each_entry(cb, &hci_cb_list, list) { 1210 if (cb->role_switch_cfm) 1211 cb->role_switch_cfm(conn, status, role); 1212 } 1213 read_unlock(&hci_cb_list_lock); 1214 } 1215 1216 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type) 1217 { 1218 size_t parsed = 0; 1219 1220 if (data_len < 2) 1221 return false; 1222 1223 while (parsed < data_len - 1) { 1224 u8 field_len = data[0]; 1225 1226 if (field_len == 0) 1227 break; 1228 1229 parsed += field_len + 1; 1230 1231 if (parsed > data_len) 1232 break; 1233 1234 if (data[1] == type) 1235 return true; 1236 1237 data += field_len + 1; 1238 } 1239 1240 return false; 1241 } 1242 1243 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1244 { 1245 if (addr_type != ADDR_LE_DEV_RANDOM) 1246 return false; 1247 1248 if ((bdaddr->b[5] & 0xc0) == 0x40) 1249 return true; 1250 1251 return false; 1252 } 1253 1254 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1255 { 1256 if (addr_type == ADDR_LE_DEV_PUBLIC) 1257 return true; 1258 1259 /* Check for Random Static address type */ 1260 if ((addr->b[5] & 0xc0) == 0xc0) 1261 return true; 1262 1263 return false; 1264 } 1265 1266 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1267 bdaddr_t *bdaddr, u8 addr_type) 1268 { 1269 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1270 return NULL; 1271 1272 return hci_find_irk_by_rpa(hdev, bdaddr); 1273 } 1274 1275 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1276 u16 to_multiplier) 1277 { 1278 u16 max_latency; 1279 1280 if (min > max || min < 6 || max > 3200) 1281 return -EINVAL; 1282 1283 if (to_multiplier < 10 || to_multiplier > 3200) 1284 return -EINVAL; 1285 1286 if (max >= to_multiplier * 8) 1287 return -EINVAL; 1288 1289 max_latency = (to_multiplier * 8 / max) - 1; 1290 if (latency > 499 || latency > max_latency) 1291 return -EINVAL; 1292 1293 return 0; 1294 } 1295 1296 int hci_register_cb(struct hci_cb *hcb); 1297 int hci_unregister_cb(struct hci_cb *hcb); 1298 1299 bool hci_req_pending(struct hci_dev *hdev); 1300 1301 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1302 const void *param, u32 timeout); 1303 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, 1304 const void *param, u8 event, u32 timeout); 1305 1306 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1307 const void *param); 1308 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1309 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1310 1311 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1312 1313 /* ----- HCI Sockets ----- */ 1314 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 1315 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk); 1316 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 1317 1318 void hci_sock_dev_event(struct hci_dev *hdev, int event); 1319 1320 /* Management interface */ 1321 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 1322 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 1323 BIT(BDADDR_LE_RANDOM)) 1324 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 1325 BIT(BDADDR_LE_PUBLIC) | \ 1326 BIT(BDADDR_LE_RANDOM)) 1327 1328 /* These LE scan and inquiry parameters were chosen according to LE General 1329 * Discovery Procedure specification. 1330 */ 1331 #define DISCOV_LE_SCAN_WIN 0x12 1332 #define DISCOV_LE_SCAN_INT 0x12 1333 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 1334 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 1335 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 1336 #define DISCOV_BREDR_INQUIRY_LEN 0x08 1337 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 1338 1339 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len); 1340 int mgmt_new_settings(struct hci_dev *hdev); 1341 void mgmt_index_added(struct hci_dev *hdev); 1342 void mgmt_index_removed(struct hci_dev *hdev); 1343 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 1344 int mgmt_powered(struct hci_dev *hdev, u8 powered); 1345 int mgmt_update_adv_data(struct hci_dev *hdev); 1346 void mgmt_discoverable_timeout(struct hci_dev *hdev); 1347 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 1348 bool persistent); 1349 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 1350 u32 flags, u8 *name, u8 name_len); 1351 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 1352 u8 link_type, u8 addr_type, u8 reason, 1353 bool mgmt_connected); 1354 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 1355 u8 link_type, u8 addr_type, u8 status); 1356 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1357 u8 addr_type, u8 status); 1358 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 1359 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1360 u8 status); 1361 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1362 u8 status); 1363 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1364 u8 link_type, u8 addr_type, u32 value, 1365 u8 confirm_hint); 1366 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1367 u8 link_type, u8 addr_type, u8 status); 1368 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1369 u8 link_type, u8 addr_type, u8 status); 1370 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1371 u8 link_type, u8 addr_type); 1372 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1373 u8 link_type, u8 addr_type, u8 status); 1374 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1375 u8 link_type, u8 addr_type, u8 status); 1376 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 1377 u8 link_type, u8 addr_type, u32 passkey, 1378 u8 entered); 1379 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 1380 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 1381 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1382 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 1383 u8 status); 1384 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 1385 void mgmt_read_local_oob_data_complete(struct hci_dev *hdev, u8 *hash192, 1386 u8 *rand192, u8 *hash256, u8 *rand256, 1387 u8 status); 1388 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1389 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 1390 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len); 1391 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1392 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 1393 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 1394 bool mgmt_powering_down(struct hci_dev *hdev); 1395 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 1396 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk); 1397 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 1398 bool persistent); 1399 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 1400 u8 bdaddr_type, u8 store_hint, u16 min_interval, 1401 u16 max_interval, u16 latency, u16 timeout); 1402 void mgmt_reenable_advertising(struct hci_dev *hdev); 1403 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 1404 1405 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 1406 u16 to_multiplier); 1407 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 1408 __u8 ltk[16]); 1409 1410 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 1411 u8 *bdaddr_type); 1412 1413 #define SCO_AIRMODE_MASK 0x0003 1414 #define SCO_AIRMODE_CVSD 0x0000 1415 #define SCO_AIRMODE_TRANSP 0x0003 1416 1417 #endif /* __HCI_CORE_H */ 1418