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 bool result_filtering; 80 bool limited; 81 s8 rssi; 82 u16 uuid_count; 83 u8 (*uuids)[16]; 84 unsigned long scan_start; 85 unsigned long scan_duration; 86 }; 87 88 struct hci_conn_hash { 89 struct list_head list; 90 unsigned int acl_num; 91 unsigned int amp_num; 92 unsigned int sco_num; 93 unsigned int le_num; 94 unsigned int le_num_slave; 95 }; 96 97 struct bdaddr_list { 98 struct list_head list; 99 bdaddr_t bdaddr; 100 u8 bdaddr_type; 101 }; 102 103 struct bt_uuid { 104 struct list_head list; 105 u8 uuid[16]; 106 u8 size; 107 u8 svc_hint; 108 }; 109 110 struct smp_csrk { 111 bdaddr_t bdaddr; 112 u8 bdaddr_type; 113 u8 type; 114 u8 val[16]; 115 }; 116 117 struct smp_ltk { 118 struct list_head list; 119 struct rcu_head rcu; 120 bdaddr_t bdaddr; 121 u8 bdaddr_type; 122 u8 authenticated; 123 u8 type; 124 u8 enc_size; 125 __le16 ediv; 126 __le64 rand; 127 u8 val[16]; 128 }; 129 130 struct smp_irk { 131 struct list_head list; 132 struct rcu_head rcu; 133 bdaddr_t rpa; 134 bdaddr_t bdaddr; 135 u8 addr_type; 136 u8 val[16]; 137 }; 138 139 struct link_key { 140 struct list_head list; 141 struct rcu_head rcu; 142 bdaddr_t bdaddr; 143 u8 type; 144 u8 val[HCI_LINK_KEY_SIZE]; 145 u8 pin_len; 146 }; 147 148 struct oob_data { 149 struct list_head list; 150 bdaddr_t bdaddr; 151 u8 bdaddr_type; 152 u8 present; 153 u8 hash192[16]; 154 u8 rand192[16]; 155 u8 hash256[16]; 156 u8 rand256[16]; 157 }; 158 159 struct adv_info { 160 struct list_head list; 161 bool pending; 162 __u8 instance; 163 __u32 flags; 164 __u16 timeout; 165 __u16 remaining_time; 166 __u16 duration; 167 __u16 adv_data_len; 168 __u8 adv_data[HCI_MAX_AD_LENGTH]; 169 __u16 scan_rsp_len; 170 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; 171 }; 172 173 #define HCI_MAX_ADV_INSTANCES 5 174 #define HCI_DEFAULT_ADV_DURATION 2 175 176 #define HCI_MAX_SHORT_NAME_LENGTH 10 177 178 /* Default LE RPA expiry time, 15 minutes */ 179 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 180 181 /* Default min/max age of connection information (1s/3s) */ 182 #define DEFAULT_CONN_INFO_MIN_AGE 1000 183 #define DEFAULT_CONN_INFO_MAX_AGE 3000 184 185 struct amp_assoc { 186 __u16 len; 187 __u16 offset; 188 __u16 rem_len; 189 __u16 len_so_far; 190 __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; 191 }; 192 193 #define HCI_MAX_PAGES 3 194 195 struct hci_dev { 196 struct list_head list; 197 struct mutex lock; 198 199 char name[8]; 200 unsigned long flags; 201 __u16 id; 202 __u8 bus; 203 __u8 dev_type; 204 bdaddr_t bdaddr; 205 bdaddr_t setup_addr; 206 bdaddr_t public_addr; 207 bdaddr_t random_addr; 208 bdaddr_t static_addr; 209 __u8 adv_addr_type; 210 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 211 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 212 __u8 eir[HCI_MAX_EIR_LENGTH]; 213 __u8 dev_class[3]; 214 __u8 major_class; 215 __u8 minor_class; 216 __u8 max_page; 217 __u8 features[HCI_MAX_PAGES][8]; 218 __u8 le_features[8]; 219 __u8 le_white_list_size; 220 __u8 le_states[8]; 221 __u8 commands[64]; 222 __u8 hci_ver; 223 __u16 hci_rev; 224 __u8 lmp_ver; 225 __u16 manufacturer; 226 __u16 lmp_subver; 227 __u16 voice_setting; 228 __u8 num_iac; 229 __u8 stored_max_keys; 230 __u8 stored_num_keys; 231 __u8 io_capability; 232 __s8 inq_tx_power; 233 __u16 page_scan_interval; 234 __u16 page_scan_window; 235 __u8 page_scan_type; 236 __u8 le_adv_channel_map; 237 __u16 le_adv_min_interval; 238 __u16 le_adv_max_interval; 239 __u8 le_scan_type; 240 __u16 le_scan_interval; 241 __u16 le_scan_window; 242 __u16 le_conn_min_interval; 243 __u16 le_conn_max_interval; 244 __u16 le_conn_latency; 245 __u16 le_supv_timeout; 246 __u16 le_def_tx_len; 247 __u16 le_def_tx_time; 248 __u16 le_max_tx_len; 249 __u16 le_max_tx_time; 250 __u16 le_max_rx_len; 251 __u16 le_max_rx_time; 252 __u16 discov_interleaved_timeout; 253 __u16 conn_info_min_age; 254 __u16 conn_info_max_age; 255 __u8 ssp_debug_mode; 256 __u8 hw_error_code; 257 __u32 clock; 258 259 __u16 devid_source; 260 __u16 devid_vendor; 261 __u16 devid_product; 262 __u16 devid_version; 263 264 __u16 pkt_type; 265 __u16 esco_type; 266 __u16 link_policy; 267 __u16 link_mode; 268 269 __u32 idle_timeout; 270 __u16 sniff_min_interval; 271 __u16 sniff_max_interval; 272 273 __u8 amp_status; 274 __u32 amp_total_bw; 275 __u32 amp_max_bw; 276 __u32 amp_min_latency; 277 __u32 amp_max_pdu; 278 __u8 amp_type; 279 __u16 amp_pal_cap; 280 __u16 amp_assoc_size; 281 __u32 amp_max_flush_to; 282 __u32 amp_be_flush_to; 283 284 struct amp_assoc loc_assoc; 285 286 __u8 flow_ctl_mode; 287 288 unsigned int auto_accept_delay; 289 290 unsigned long quirks; 291 292 atomic_t cmd_cnt; 293 unsigned int acl_cnt; 294 unsigned int sco_cnt; 295 unsigned int le_cnt; 296 297 unsigned int acl_mtu; 298 unsigned int sco_mtu; 299 unsigned int le_mtu; 300 unsigned int acl_pkts; 301 unsigned int sco_pkts; 302 unsigned int le_pkts; 303 304 __u16 block_len; 305 __u16 block_mtu; 306 __u16 num_blocks; 307 __u16 block_cnt; 308 309 unsigned long acl_last_tx; 310 unsigned long sco_last_tx; 311 unsigned long le_last_tx; 312 313 struct workqueue_struct *workqueue; 314 struct workqueue_struct *req_workqueue; 315 316 struct work_struct power_on; 317 struct delayed_work power_off; 318 struct work_struct error_reset; 319 320 __u16 discov_timeout; 321 struct delayed_work discov_off; 322 323 struct delayed_work service_cache; 324 325 struct delayed_work cmd_timer; 326 327 struct work_struct rx_work; 328 struct work_struct cmd_work; 329 struct work_struct tx_work; 330 331 struct work_struct discov_update; 332 struct work_struct bg_scan_update; 333 struct work_struct scan_update; 334 struct work_struct connectable_update; 335 struct work_struct discoverable_update; 336 struct delayed_work le_scan_disable; 337 struct delayed_work le_scan_restart; 338 339 struct sk_buff_head rx_q; 340 struct sk_buff_head raw_q; 341 struct sk_buff_head cmd_q; 342 343 struct sk_buff *sent_cmd; 344 345 struct mutex req_lock; 346 wait_queue_head_t req_wait_q; 347 __u32 req_status; 348 __u32 req_result; 349 struct sk_buff *req_skb; 350 351 void *smp_data; 352 void *smp_bredr_data; 353 354 struct discovery_state discovery; 355 struct hci_conn_hash conn_hash; 356 357 struct list_head mgmt_pending; 358 struct list_head blacklist; 359 struct list_head whitelist; 360 struct list_head uuids; 361 struct list_head link_keys; 362 struct list_head long_term_keys; 363 struct list_head identity_resolving_keys; 364 struct list_head remote_oob_data; 365 struct list_head le_white_list; 366 struct list_head le_conn_params; 367 struct list_head pend_le_conns; 368 struct list_head pend_le_reports; 369 370 struct hci_dev_stats stat; 371 372 atomic_t promisc; 373 374 struct dentry *debugfs; 375 376 struct device dev; 377 378 struct rfkill *rfkill; 379 380 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 381 382 __s8 adv_tx_power; 383 __u8 adv_data[HCI_MAX_AD_LENGTH]; 384 __u8 adv_data_len; 385 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; 386 __u8 scan_rsp_data_len; 387 388 struct list_head adv_instances; 389 unsigned int adv_instance_cnt; 390 __u8 cur_adv_instance; 391 __u16 adv_instance_timeout; 392 struct delayed_work adv_instance_expire; 393 394 __u8 irk[16]; 395 __u32 rpa_timeout; 396 struct delayed_work rpa_expired; 397 bdaddr_t rpa; 398 399 int (*open)(struct hci_dev *hdev); 400 int (*close)(struct hci_dev *hdev); 401 int (*flush)(struct hci_dev *hdev); 402 int (*setup)(struct hci_dev *hdev); 403 int (*shutdown)(struct hci_dev *hdev); 404 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 405 void (*notify)(struct hci_dev *hdev, unsigned int evt); 406 void (*hw_error)(struct hci_dev *hdev, u8 code); 407 int (*post_init)(struct hci_dev *hdev); 408 int (*set_diag)(struct hci_dev *hdev, bool enable); 409 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 410 }; 411 412 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 413 414 struct hci_conn { 415 struct list_head list; 416 417 atomic_t refcnt; 418 419 bdaddr_t dst; 420 __u8 dst_type; 421 bdaddr_t src; 422 __u8 src_type; 423 bdaddr_t init_addr; 424 __u8 init_addr_type; 425 bdaddr_t resp_addr; 426 __u8 resp_addr_type; 427 __u16 handle; 428 __u16 state; 429 __u8 mode; 430 __u8 type; 431 __u8 role; 432 bool out; 433 __u8 attempt; 434 __u8 dev_class[3]; 435 __u8 features[HCI_MAX_PAGES][8]; 436 __u16 pkt_type; 437 __u16 link_policy; 438 __u8 key_type; 439 __u8 auth_type; 440 __u8 sec_level; 441 __u8 pending_sec_level; 442 __u8 pin_length; 443 __u8 enc_key_size; 444 __u8 io_capability; 445 __u32 passkey_notify; 446 __u8 passkey_entered; 447 __u16 disc_timeout; 448 __u16 conn_timeout; 449 __u16 setting; 450 __u16 le_conn_min_interval; 451 __u16 le_conn_max_interval; 452 __u16 le_conn_interval; 453 __u16 le_conn_latency; 454 __u16 le_supv_timeout; 455 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 456 __u8 le_adv_data_len; 457 __s8 rssi; 458 __s8 tx_power; 459 __s8 max_tx_power; 460 unsigned long flags; 461 462 __u32 clock; 463 __u16 clock_accuracy; 464 465 unsigned long conn_info_timestamp; 466 467 __u8 remote_cap; 468 __u8 remote_auth; 469 __u8 remote_id; 470 471 unsigned int sent; 472 473 struct sk_buff_head data_q; 474 struct list_head chan_list; 475 476 struct delayed_work disc_work; 477 struct delayed_work auto_accept_work; 478 struct delayed_work idle_work; 479 struct delayed_work le_conn_timeout; 480 struct work_struct le_scan_cleanup; 481 482 struct device dev; 483 struct dentry *debugfs; 484 485 struct hci_dev *hdev; 486 void *l2cap_data; 487 void *sco_data; 488 struct amp_mgr *amp_mgr; 489 490 struct hci_conn *link; 491 492 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 493 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 494 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 495 }; 496 497 struct hci_chan { 498 struct list_head list; 499 __u16 handle; 500 struct hci_conn *conn; 501 struct sk_buff_head data_q; 502 unsigned int sent; 503 __u8 state; 504 }; 505 506 struct hci_conn_params { 507 struct list_head list; 508 struct list_head action; 509 510 bdaddr_t addr; 511 u8 addr_type; 512 513 u16 conn_min_interval; 514 u16 conn_max_interval; 515 u16 conn_latency; 516 u16 supervision_timeout; 517 518 enum { 519 HCI_AUTO_CONN_DISABLED, 520 HCI_AUTO_CONN_REPORT, 521 HCI_AUTO_CONN_DIRECT, 522 HCI_AUTO_CONN_ALWAYS, 523 HCI_AUTO_CONN_LINK_LOSS, 524 HCI_AUTO_CONN_EXPLICIT, 525 } auto_connect; 526 527 struct hci_conn *conn; 528 bool explicit_connect; 529 }; 530 531 extern struct list_head hci_dev_list; 532 extern struct list_head hci_cb_list; 533 extern rwlock_t hci_dev_list_lock; 534 extern struct mutex hci_cb_list_lock; 535 536 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 537 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 538 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 539 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 540 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 541 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 542 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 543 544 #define hci_dev_clear_volatile_flags(hdev) \ 545 do { \ 546 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 547 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 548 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 549 } while (0) 550 551 /* ----- HCI interface to upper protocols ----- */ 552 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 553 int l2cap_disconn_ind(struct hci_conn *hcon); 554 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 555 556 #if IS_ENABLED(CONFIG_BT_BREDR) 557 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 558 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 559 #else 560 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 561 __u8 *flags) 562 { 563 return 0; 564 } 565 566 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 567 { 568 } 569 #endif 570 571 /* ----- Inquiry cache ----- */ 572 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 573 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 574 575 static inline void discovery_init(struct hci_dev *hdev) 576 { 577 hdev->discovery.state = DISCOVERY_STOPPED; 578 INIT_LIST_HEAD(&hdev->discovery.all); 579 INIT_LIST_HEAD(&hdev->discovery.unknown); 580 INIT_LIST_HEAD(&hdev->discovery.resolve); 581 hdev->discovery.report_invalid_rssi = true; 582 hdev->discovery.rssi = HCI_RSSI_INVALID; 583 } 584 585 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 586 { 587 hdev->discovery.result_filtering = false; 588 hdev->discovery.report_invalid_rssi = true; 589 hdev->discovery.rssi = HCI_RSSI_INVALID; 590 hdev->discovery.uuid_count = 0; 591 kfree(hdev->discovery.uuids); 592 hdev->discovery.uuids = NULL; 593 hdev->discovery.scan_start = 0; 594 hdev->discovery.scan_duration = 0; 595 } 596 597 bool hci_discovery_active(struct hci_dev *hdev); 598 599 void hci_discovery_set_state(struct hci_dev *hdev, int state); 600 601 static inline int inquiry_cache_empty(struct hci_dev *hdev) 602 { 603 return list_empty(&hdev->discovery.all); 604 } 605 606 static inline long inquiry_cache_age(struct hci_dev *hdev) 607 { 608 struct discovery_state *c = &hdev->discovery; 609 return jiffies - c->timestamp; 610 } 611 612 static inline long inquiry_entry_age(struct inquiry_entry *e) 613 { 614 return jiffies - e->timestamp; 615 } 616 617 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 618 bdaddr_t *bdaddr); 619 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 620 bdaddr_t *bdaddr); 621 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 622 bdaddr_t *bdaddr, 623 int state); 624 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 625 struct inquiry_entry *ie); 626 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 627 bool name_known); 628 void hci_inquiry_cache_flush(struct hci_dev *hdev); 629 630 /* ----- HCI Connections ----- */ 631 enum { 632 HCI_CONN_AUTH_PEND, 633 HCI_CONN_REAUTH_PEND, 634 HCI_CONN_ENCRYPT_PEND, 635 HCI_CONN_RSWITCH_PEND, 636 HCI_CONN_MODE_CHANGE_PEND, 637 HCI_CONN_SCO_SETUP_PEND, 638 HCI_CONN_MGMT_CONNECTED, 639 HCI_CONN_SSP_ENABLED, 640 HCI_CONN_SC_ENABLED, 641 HCI_CONN_AES_CCM, 642 HCI_CONN_POWER_SAVE, 643 HCI_CONN_FLUSH_KEY, 644 HCI_CONN_ENCRYPT, 645 HCI_CONN_AUTH, 646 HCI_CONN_SECURE, 647 HCI_CONN_FIPS, 648 HCI_CONN_STK_ENCRYPT, 649 HCI_CONN_AUTH_INITIATOR, 650 HCI_CONN_DROP, 651 HCI_CONN_PARAM_REMOVAL_PEND, 652 HCI_CONN_NEW_LINK_KEY, 653 HCI_CONN_SCANNING, 654 }; 655 656 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 657 { 658 struct hci_dev *hdev = conn->hdev; 659 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 660 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 661 } 662 663 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 664 { 665 struct hci_dev *hdev = conn->hdev; 666 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 667 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 668 } 669 670 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 671 { 672 struct hci_conn_hash *h = &hdev->conn_hash; 673 list_add_rcu(&c->list, &h->list); 674 switch (c->type) { 675 case ACL_LINK: 676 h->acl_num++; 677 break; 678 case AMP_LINK: 679 h->amp_num++; 680 break; 681 case LE_LINK: 682 h->le_num++; 683 if (c->role == HCI_ROLE_SLAVE) 684 h->le_num_slave++; 685 break; 686 case SCO_LINK: 687 case ESCO_LINK: 688 h->sco_num++; 689 break; 690 } 691 } 692 693 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 694 { 695 struct hci_conn_hash *h = &hdev->conn_hash; 696 697 list_del_rcu(&c->list); 698 synchronize_rcu(); 699 700 switch (c->type) { 701 case ACL_LINK: 702 h->acl_num--; 703 break; 704 case AMP_LINK: 705 h->amp_num--; 706 break; 707 case LE_LINK: 708 h->le_num--; 709 if (c->role == HCI_ROLE_SLAVE) 710 h->le_num_slave--; 711 break; 712 case SCO_LINK: 713 case ESCO_LINK: 714 h->sco_num--; 715 break; 716 } 717 } 718 719 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 720 { 721 struct hci_conn_hash *h = &hdev->conn_hash; 722 switch (type) { 723 case ACL_LINK: 724 return h->acl_num; 725 case AMP_LINK: 726 return h->amp_num; 727 case LE_LINK: 728 return h->le_num; 729 case SCO_LINK: 730 case ESCO_LINK: 731 return h->sco_num; 732 default: 733 return 0; 734 } 735 } 736 737 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 738 { 739 struct hci_conn_hash *c = &hdev->conn_hash; 740 741 return c->acl_num + c->amp_num + c->sco_num + c->le_num; 742 } 743 744 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 745 { 746 struct hci_conn_hash *h = &hdev->conn_hash; 747 struct hci_conn *c; 748 __u8 type = INVALID_LINK; 749 750 rcu_read_lock(); 751 752 list_for_each_entry_rcu(c, &h->list, list) { 753 if (c->handle == handle) { 754 type = c->type; 755 break; 756 } 757 } 758 759 rcu_read_unlock(); 760 761 return type; 762 } 763 764 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 765 __u16 handle) 766 { 767 struct hci_conn_hash *h = &hdev->conn_hash; 768 struct hci_conn *c; 769 770 rcu_read_lock(); 771 772 list_for_each_entry_rcu(c, &h->list, list) { 773 if (c->handle == handle) { 774 rcu_read_unlock(); 775 return c; 776 } 777 } 778 rcu_read_unlock(); 779 780 return NULL; 781 } 782 783 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 784 __u8 type, bdaddr_t *ba) 785 { 786 struct hci_conn_hash *h = &hdev->conn_hash; 787 struct hci_conn *c; 788 789 rcu_read_lock(); 790 791 list_for_each_entry_rcu(c, &h->list, list) { 792 if (c->type == type && !bacmp(&c->dst, ba)) { 793 rcu_read_unlock(); 794 return c; 795 } 796 } 797 798 rcu_read_unlock(); 799 800 return NULL; 801 } 802 803 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 804 bdaddr_t *ba, 805 __u8 ba_type) 806 { 807 struct hci_conn_hash *h = &hdev->conn_hash; 808 struct hci_conn *c; 809 810 rcu_read_lock(); 811 812 list_for_each_entry_rcu(c, &h->list, list) { 813 if (c->type != LE_LINK) 814 continue; 815 816 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 817 rcu_read_unlock(); 818 return c; 819 } 820 } 821 822 rcu_read_unlock(); 823 824 return NULL; 825 } 826 827 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 828 __u8 type, __u16 state) 829 { 830 struct hci_conn_hash *h = &hdev->conn_hash; 831 struct hci_conn *c; 832 833 rcu_read_lock(); 834 835 list_for_each_entry_rcu(c, &h->list, list) { 836 if (c->type == type && c->state == state) { 837 rcu_read_unlock(); 838 return c; 839 } 840 } 841 842 rcu_read_unlock(); 843 844 return NULL; 845 } 846 847 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 848 { 849 struct hci_conn_hash *h = &hdev->conn_hash; 850 struct hci_conn *c; 851 852 rcu_read_lock(); 853 854 list_for_each_entry_rcu(c, &h->list, list) { 855 if (c->type == LE_LINK && c->state == BT_CONNECT && 856 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 857 rcu_read_unlock(); 858 return c; 859 } 860 } 861 862 rcu_read_unlock(); 863 864 return NULL; 865 } 866 867 int hci_disconnect(struct hci_conn *conn, __u8 reason); 868 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 869 void hci_sco_setup(struct hci_conn *conn, __u8 status); 870 871 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 872 u8 role); 873 int hci_conn_del(struct hci_conn *conn); 874 void hci_conn_hash_flush(struct hci_dev *hdev); 875 void hci_conn_check_pending(struct hci_dev *hdev); 876 877 struct hci_chan *hci_chan_create(struct hci_conn *conn); 878 void hci_chan_del(struct hci_chan *chan); 879 void hci_chan_list_flush(struct hci_conn *conn); 880 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 881 882 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 883 u8 dst_type, u8 sec_level, 884 u16 conn_timeout); 885 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 886 u8 dst_type, u8 sec_level, u16 conn_timeout, 887 u8 role); 888 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 889 u8 sec_level, u8 auth_type); 890 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 891 __u16 setting); 892 int hci_conn_check_link_mode(struct hci_conn *conn); 893 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 894 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 895 bool initiator); 896 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 897 898 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 899 900 void hci_le_conn_failed(struct hci_conn *conn, u8 status); 901 902 /* 903 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 904 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 905 * working or anything else. They just guarantee that the object is available 906 * and can be dereferenced. So you can use its locks, local variables and any 907 * other constant data. 908 * Before accessing runtime data, you _must_ lock the object and then check that 909 * it is still running. As soon as you release the locks, the connection might 910 * get dropped, though. 911 * 912 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 913 * how long the underlying connection is held. So every channel that runs on the 914 * hci_conn object calls this to prevent the connection from disappearing. As 915 * long as you hold a device, you must also guarantee that you have a valid 916 * reference to the device via hci_conn_get() (or the initial reference from 917 * hci_conn_add()). 918 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 919 * break because nobody cares for that. But this means, we cannot use 920 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 921 */ 922 923 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 924 { 925 get_device(&conn->dev); 926 return conn; 927 } 928 929 static inline void hci_conn_put(struct hci_conn *conn) 930 { 931 put_device(&conn->dev); 932 } 933 934 static inline void hci_conn_hold(struct hci_conn *conn) 935 { 936 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 937 938 atomic_inc(&conn->refcnt); 939 cancel_delayed_work(&conn->disc_work); 940 } 941 942 static inline void hci_conn_drop(struct hci_conn *conn) 943 { 944 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 945 946 if (atomic_dec_and_test(&conn->refcnt)) { 947 unsigned long timeo; 948 949 switch (conn->type) { 950 case ACL_LINK: 951 case LE_LINK: 952 cancel_delayed_work(&conn->idle_work); 953 if (conn->state == BT_CONNECTED) { 954 timeo = conn->disc_timeout; 955 if (!conn->out) 956 timeo *= 2; 957 } else { 958 timeo = 0; 959 } 960 break; 961 962 case AMP_LINK: 963 timeo = conn->disc_timeout; 964 break; 965 966 default: 967 timeo = 0; 968 break; 969 } 970 971 cancel_delayed_work(&conn->disc_work); 972 queue_delayed_work(conn->hdev->workqueue, 973 &conn->disc_work, timeo); 974 } 975 } 976 977 /* ----- HCI Devices ----- */ 978 static inline void hci_dev_put(struct hci_dev *d) 979 { 980 BT_DBG("%s orig refcnt %d", d->name, 981 atomic_read(&d->dev.kobj.kref.refcount)); 982 983 put_device(&d->dev); 984 } 985 986 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 987 { 988 BT_DBG("%s orig refcnt %d", d->name, 989 atomic_read(&d->dev.kobj.kref.refcount)); 990 991 get_device(&d->dev); 992 return d; 993 } 994 995 #define hci_dev_lock(d) mutex_lock(&d->lock) 996 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 997 998 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 999 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1000 1001 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1002 { 1003 return dev_get_drvdata(&hdev->dev); 1004 } 1005 1006 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1007 { 1008 dev_set_drvdata(&hdev->dev, data); 1009 } 1010 1011 struct hci_dev *hci_dev_get(int index); 1012 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src); 1013 1014 struct hci_dev *hci_alloc_dev(void); 1015 void hci_free_dev(struct hci_dev *hdev); 1016 int hci_register_dev(struct hci_dev *hdev); 1017 void hci_unregister_dev(struct hci_dev *hdev); 1018 int hci_suspend_dev(struct hci_dev *hdev); 1019 int hci_resume_dev(struct hci_dev *hdev); 1020 int hci_reset_dev(struct hci_dev *hdev); 1021 int hci_dev_open(__u16 dev); 1022 int hci_dev_close(__u16 dev); 1023 int hci_dev_do_close(struct hci_dev *hdev); 1024 int hci_dev_reset(__u16 dev); 1025 int hci_dev_reset_stat(__u16 dev); 1026 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1027 int hci_get_dev_list(void __user *arg); 1028 int hci_get_dev_info(void __user *arg); 1029 int hci_get_conn_list(void __user *arg); 1030 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1031 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1032 int hci_inquiry(void __user *arg); 1033 1034 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1035 bdaddr_t *bdaddr, u8 type); 1036 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1037 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1038 void hci_bdaddr_list_clear(struct list_head *list); 1039 1040 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1041 bdaddr_t *addr, u8 addr_type); 1042 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1043 bdaddr_t *addr, u8 addr_type); 1044 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1045 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1046 1047 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1048 bdaddr_t *addr, 1049 u8 addr_type); 1050 1051 void hci_uuids_clear(struct hci_dev *hdev); 1052 1053 void hci_link_keys_clear(struct hci_dev *hdev); 1054 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1055 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1056 bdaddr_t *bdaddr, u8 *val, u8 type, 1057 u8 pin_len, bool *persistent); 1058 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1059 u8 addr_type, u8 type, u8 authenticated, 1060 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1061 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1062 u8 addr_type, u8 role); 1063 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1064 void hci_smp_ltks_clear(struct hci_dev *hdev); 1065 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1066 1067 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1068 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1069 u8 addr_type); 1070 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1071 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1072 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1073 void hci_smp_irks_clear(struct hci_dev *hdev); 1074 1075 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1076 1077 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1078 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1079 bdaddr_t *bdaddr, u8 bdaddr_type); 1080 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1081 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1082 u8 *hash256, u8 *rand256); 1083 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1084 u8 bdaddr_type); 1085 1086 void hci_adv_instances_clear(struct hci_dev *hdev); 1087 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1088 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1089 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, 1090 u16 adv_data_len, u8 *adv_data, 1091 u16 scan_rsp_len, u8 *scan_rsp_data, 1092 u16 timeout, u16 duration); 1093 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1094 1095 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1096 1097 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1098 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1099 1100 void hci_init_sysfs(struct hci_dev *hdev); 1101 void hci_conn_init_sysfs(struct hci_conn *conn); 1102 void hci_conn_add_sysfs(struct hci_conn *conn); 1103 void hci_conn_del_sysfs(struct hci_conn *conn); 1104 1105 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1106 1107 /* ----- LMP capabilities ----- */ 1108 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1109 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1110 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1111 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1112 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1113 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1114 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1115 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1116 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1117 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1118 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1119 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1120 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1121 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1122 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1123 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1124 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1125 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1126 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1127 1128 /* ----- Extended LMP capabilities ----- */ 1129 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER) 1130 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE) 1131 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1132 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1133 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1134 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1135 1136 /* ----- Host capabilities ----- */ 1137 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1138 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1139 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1140 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1141 1142 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1143 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1144 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1145 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1146 1147 /* ----- HCI protocols ----- */ 1148 #define HCI_PROTO_DEFER 0x01 1149 1150 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1151 __u8 type, __u8 *flags) 1152 { 1153 switch (type) { 1154 case ACL_LINK: 1155 return l2cap_connect_ind(hdev, bdaddr); 1156 1157 case SCO_LINK: 1158 case ESCO_LINK: 1159 return sco_connect_ind(hdev, bdaddr, flags); 1160 1161 default: 1162 BT_ERR("unknown link type %d", type); 1163 return -EINVAL; 1164 } 1165 } 1166 1167 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1168 { 1169 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1170 return HCI_ERROR_REMOTE_USER_TERM; 1171 1172 return l2cap_disconn_ind(conn); 1173 } 1174 1175 /* ----- HCI callbacks ----- */ 1176 struct hci_cb { 1177 struct list_head list; 1178 1179 char *name; 1180 1181 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1182 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1183 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1184 __u8 encrypt); 1185 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1186 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1187 }; 1188 1189 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1190 { 1191 struct hci_cb *cb; 1192 1193 mutex_lock(&hci_cb_list_lock); 1194 list_for_each_entry(cb, &hci_cb_list, list) { 1195 if (cb->connect_cfm) 1196 cb->connect_cfm(conn, status); 1197 } 1198 mutex_unlock(&hci_cb_list_lock); 1199 1200 if (conn->connect_cfm_cb) 1201 conn->connect_cfm_cb(conn, status); 1202 } 1203 1204 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1205 { 1206 struct hci_cb *cb; 1207 1208 mutex_lock(&hci_cb_list_lock); 1209 list_for_each_entry(cb, &hci_cb_list, list) { 1210 if (cb->disconn_cfm) 1211 cb->disconn_cfm(conn, reason); 1212 } 1213 mutex_unlock(&hci_cb_list_lock); 1214 1215 if (conn->disconn_cfm_cb) 1216 conn->disconn_cfm_cb(conn, reason); 1217 } 1218 1219 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1220 { 1221 struct hci_cb *cb; 1222 __u8 encrypt; 1223 1224 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1225 return; 1226 1227 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1228 1229 mutex_lock(&hci_cb_list_lock); 1230 list_for_each_entry(cb, &hci_cb_list, list) { 1231 if (cb->security_cfm) 1232 cb->security_cfm(conn, status, encrypt); 1233 } 1234 mutex_unlock(&hci_cb_list_lock); 1235 1236 if (conn->security_cfm_cb) 1237 conn->security_cfm_cb(conn, status); 1238 } 1239 1240 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, 1241 __u8 encrypt) 1242 { 1243 struct hci_cb *cb; 1244 1245 if (conn->sec_level == BT_SECURITY_SDP) 1246 conn->sec_level = BT_SECURITY_LOW; 1247 1248 if (conn->pending_sec_level > conn->sec_level) 1249 conn->sec_level = conn->pending_sec_level; 1250 1251 mutex_lock(&hci_cb_list_lock); 1252 list_for_each_entry(cb, &hci_cb_list, list) { 1253 if (cb->security_cfm) 1254 cb->security_cfm(conn, status, encrypt); 1255 } 1256 mutex_unlock(&hci_cb_list_lock); 1257 1258 if (conn->security_cfm_cb) 1259 conn->security_cfm_cb(conn, status); 1260 } 1261 1262 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1263 { 1264 struct hci_cb *cb; 1265 1266 mutex_lock(&hci_cb_list_lock); 1267 list_for_each_entry(cb, &hci_cb_list, list) { 1268 if (cb->key_change_cfm) 1269 cb->key_change_cfm(conn, status); 1270 } 1271 mutex_unlock(&hci_cb_list_lock); 1272 } 1273 1274 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1275 __u8 role) 1276 { 1277 struct hci_cb *cb; 1278 1279 mutex_lock(&hci_cb_list_lock); 1280 list_for_each_entry(cb, &hci_cb_list, list) { 1281 if (cb->role_switch_cfm) 1282 cb->role_switch_cfm(conn, status, role); 1283 } 1284 mutex_unlock(&hci_cb_list_lock); 1285 } 1286 1287 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type, 1288 size_t *data_len) 1289 { 1290 size_t parsed = 0; 1291 1292 if (eir_len < 2) 1293 return NULL; 1294 1295 while (parsed < eir_len - 1) { 1296 u8 field_len = eir[0]; 1297 1298 if (field_len == 0) 1299 break; 1300 1301 parsed += field_len + 1; 1302 1303 if (parsed > eir_len) 1304 break; 1305 1306 if (eir[1] != type) { 1307 eir += field_len + 1; 1308 continue; 1309 } 1310 1311 /* Zero length data */ 1312 if (field_len == 1) 1313 return NULL; 1314 1315 if (data_len) 1316 *data_len = field_len - 1; 1317 1318 return &eir[2]; 1319 } 1320 1321 return NULL; 1322 } 1323 1324 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1325 { 1326 if (addr_type != ADDR_LE_DEV_RANDOM) 1327 return false; 1328 1329 if ((bdaddr->b[5] & 0xc0) == 0x40) 1330 return true; 1331 1332 return false; 1333 } 1334 1335 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1336 { 1337 if (addr_type == ADDR_LE_DEV_PUBLIC) 1338 return true; 1339 1340 /* Check for Random Static address type */ 1341 if ((addr->b[5] & 0xc0) == 0xc0) 1342 return true; 1343 1344 return false; 1345 } 1346 1347 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1348 bdaddr_t *bdaddr, u8 addr_type) 1349 { 1350 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1351 return NULL; 1352 1353 return hci_find_irk_by_rpa(hdev, bdaddr); 1354 } 1355 1356 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1357 u16 to_multiplier) 1358 { 1359 u16 max_latency; 1360 1361 if (min > max || min < 6 || max > 3200) 1362 return -EINVAL; 1363 1364 if (to_multiplier < 10 || to_multiplier > 3200) 1365 return -EINVAL; 1366 1367 if (max >= to_multiplier * 8) 1368 return -EINVAL; 1369 1370 max_latency = (to_multiplier * 4 / max) - 1; 1371 if (latency > 499 || latency > max_latency) 1372 return -EINVAL; 1373 1374 return 0; 1375 } 1376 1377 int hci_register_cb(struct hci_cb *hcb); 1378 int hci_unregister_cb(struct hci_cb *hcb); 1379 1380 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1381 const void *param, u32 timeout); 1382 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, 1383 const void *param, u8 event, u32 timeout); 1384 1385 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1386 const void *param); 1387 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1388 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1389 1390 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1391 1392 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1393 const void *param, u32 timeout); 1394 1395 /* ----- HCI Sockets ----- */ 1396 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 1397 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 1398 int flag, struct sock *skip_sk); 1399 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 1400 1401 void hci_sock_dev_event(struct hci_dev *hdev, int event); 1402 1403 #define HCI_MGMT_VAR_LEN BIT(0) 1404 #define HCI_MGMT_NO_HDEV BIT(1) 1405 #define HCI_MGMT_UNTRUSTED BIT(2) 1406 #define HCI_MGMT_UNCONFIGURED BIT(3) 1407 1408 struct hci_mgmt_handler { 1409 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 1410 u16 data_len); 1411 size_t data_len; 1412 unsigned long flags; 1413 }; 1414 1415 struct hci_mgmt_chan { 1416 struct list_head list; 1417 unsigned short channel; 1418 size_t handler_count; 1419 const struct hci_mgmt_handler *handlers; 1420 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 1421 }; 1422 1423 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 1424 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 1425 1426 /* Management interface */ 1427 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 1428 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 1429 BIT(BDADDR_LE_RANDOM)) 1430 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 1431 BIT(BDADDR_LE_PUBLIC) | \ 1432 BIT(BDADDR_LE_RANDOM)) 1433 1434 /* These LE scan and inquiry parameters were chosen according to LE General 1435 * Discovery Procedure specification. 1436 */ 1437 #define DISCOV_LE_SCAN_WIN 0x12 1438 #define DISCOV_LE_SCAN_INT 0x12 1439 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 1440 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 1441 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 1442 #define DISCOV_BREDR_INQUIRY_LEN 0x08 1443 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 1444 1445 int mgmt_new_settings(struct hci_dev *hdev); 1446 void mgmt_index_added(struct hci_dev *hdev); 1447 void mgmt_index_removed(struct hci_dev *hdev); 1448 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 1449 void mgmt_power_on(struct hci_dev *hdev, int err); 1450 void __mgmt_power_off(struct hci_dev *hdev); 1451 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 1452 bool persistent); 1453 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 1454 u32 flags, u8 *name, u8 name_len); 1455 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 1456 u8 link_type, u8 addr_type, u8 reason, 1457 bool mgmt_connected); 1458 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 1459 u8 link_type, u8 addr_type, u8 status); 1460 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1461 u8 addr_type, u8 status); 1462 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 1463 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1464 u8 status); 1465 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1466 u8 status); 1467 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1468 u8 link_type, u8 addr_type, u32 value, 1469 u8 confirm_hint); 1470 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1471 u8 link_type, u8 addr_type, u8 status); 1472 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1473 u8 link_type, u8 addr_type, u8 status); 1474 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1475 u8 link_type, u8 addr_type); 1476 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1477 u8 link_type, u8 addr_type, u8 status); 1478 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1479 u8 link_type, u8 addr_type, u8 status); 1480 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 1481 u8 link_type, u8 addr_type, u32 passkey, 1482 u8 entered); 1483 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 1484 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 1485 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1486 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 1487 u8 status); 1488 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 1489 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 1490 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 1491 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1492 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 1493 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len); 1494 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1495 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 1496 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 1497 bool mgmt_powering_down(struct hci_dev *hdev); 1498 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 1499 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 1500 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 1501 bool persistent); 1502 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 1503 u8 bdaddr_type, u8 store_hint, u16 min_interval, 1504 u16 max_interval, u16 latency, u16 timeout); 1505 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 1506 bool mgmt_get_connectable(struct hci_dev *hdev); 1507 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status); 1508 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status); 1509 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 1510 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 1511 u8 instance); 1512 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 1513 u8 instance); 1514 1515 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 1516 u16 to_multiplier); 1517 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 1518 __u8 ltk[16], __u8 key_size); 1519 1520 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 1521 u8 *bdaddr_type); 1522 1523 #define SCO_AIRMODE_MASK 0x0003 1524 #define SCO_AIRMODE_CVSD 0x0000 1525 #define SCO_AIRMODE_TRANSP 0x0003 1526 1527 #endif /* __HCI_CORE_H */ 1528