1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 4 5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License version 2 as 9 published by the Free Software Foundation; 10 11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 22 SOFTWARE IS DISCLAIMED. 23 */ 24 25 #ifndef __HCI_CORE_H 26 #define __HCI_CORE_H 27 28 #include <linux/leds.h> 29 #include <net/bluetooth/hci.h> 30 #include <net/bluetooth/hci_sock.h> 31 32 /* HCI priority */ 33 #define HCI_PRIO_MAX 7 34 35 /* HCI Core structures */ 36 struct inquiry_data { 37 bdaddr_t bdaddr; 38 __u8 pscan_rep_mode; 39 __u8 pscan_period_mode; 40 __u8 pscan_mode; 41 __u8 dev_class[3]; 42 __le16 clock_offset; 43 __s8 rssi; 44 __u8 ssp_mode; 45 }; 46 47 struct inquiry_entry { 48 struct list_head all; /* inq_cache.all */ 49 struct list_head list; /* unknown or resolve */ 50 enum { 51 NAME_NOT_KNOWN, 52 NAME_NEEDED, 53 NAME_PENDING, 54 NAME_KNOWN, 55 } name_state; 56 __u32 timestamp; 57 struct inquiry_data data; 58 }; 59 60 struct discovery_state { 61 int type; 62 enum { 63 DISCOVERY_STOPPED, 64 DISCOVERY_STARTING, 65 DISCOVERY_FINDING, 66 DISCOVERY_RESOLVING, 67 DISCOVERY_STOPPING, 68 } state; 69 struct list_head all; /* All devices found during inquiry */ 70 struct list_head unknown; /* Name state not known */ 71 struct list_head resolve; /* Name needs to be resolved */ 72 __u32 timestamp; 73 bdaddr_t last_adv_addr; 74 u8 last_adv_addr_type; 75 s8 last_adv_rssi; 76 u32 last_adv_flags; 77 u8 last_adv_data[HCI_MAX_AD_LENGTH]; 78 u8 last_adv_data_len; 79 bool report_invalid_rssi; 80 bool result_filtering; 81 bool limited; 82 s8 rssi; 83 u16 uuid_count; 84 u8 (*uuids)[16]; 85 unsigned long scan_start; 86 unsigned long scan_duration; 87 }; 88 89 struct hci_conn_hash { 90 struct list_head list; 91 unsigned int acl_num; 92 unsigned int amp_num; 93 unsigned int sco_num; 94 unsigned int le_num; 95 unsigned int le_num_slave; 96 }; 97 98 struct bdaddr_list { 99 struct list_head list; 100 bdaddr_t bdaddr; 101 u8 bdaddr_type; 102 }; 103 104 struct bt_uuid { 105 struct list_head list; 106 u8 uuid[16]; 107 u8 size; 108 u8 svc_hint; 109 }; 110 111 struct smp_csrk { 112 bdaddr_t bdaddr; 113 u8 bdaddr_type; 114 u8 type; 115 u8 val[16]; 116 }; 117 118 struct smp_ltk { 119 struct list_head list; 120 struct rcu_head rcu; 121 bdaddr_t bdaddr; 122 u8 bdaddr_type; 123 u8 authenticated; 124 u8 type; 125 u8 enc_size; 126 __le16 ediv; 127 __le64 rand; 128 u8 val[16]; 129 }; 130 131 struct smp_irk { 132 struct list_head list; 133 struct rcu_head rcu; 134 bdaddr_t rpa; 135 bdaddr_t bdaddr; 136 u8 addr_type; 137 u8 val[16]; 138 }; 139 140 struct link_key { 141 struct list_head list; 142 struct rcu_head rcu; 143 bdaddr_t bdaddr; 144 u8 type; 145 u8 val[HCI_LINK_KEY_SIZE]; 146 u8 pin_len; 147 }; 148 149 struct oob_data { 150 struct list_head list; 151 bdaddr_t bdaddr; 152 u8 bdaddr_type; 153 u8 present; 154 u8 hash192[16]; 155 u8 rand192[16]; 156 u8 hash256[16]; 157 u8 rand256[16]; 158 }; 159 160 struct adv_info { 161 struct list_head list; 162 bool pending; 163 __u8 instance; 164 __u32 flags; 165 __u16 timeout; 166 __u16 remaining_time; 167 __u16 duration; 168 __u16 adv_data_len; 169 __u8 adv_data[HCI_MAX_AD_LENGTH]; 170 __u16 scan_rsp_len; 171 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; 172 }; 173 174 #define HCI_MAX_ADV_INSTANCES 5 175 #define HCI_DEFAULT_ADV_DURATION 2 176 177 #define HCI_MAX_SHORT_NAME_LENGTH 10 178 179 /* Default LE RPA expiry time, 15 minutes */ 180 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 181 182 /* Default min/max age of connection information (1s/3s) */ 183 #define DEFAULT_CONN_INFO_MIN_AGE 1000 184 #define DEFAULT_CONN_INFO_MAX_AGE 3000 185 186 struct amp_assoc { 187 __u16 len; 188 __u16 offset; 189 __u16 rem_len; 190 __u16 len_so_far; 191 __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; 192 }; 193 194 #define HCI_MAX_PAGES 3 195 196 struct hci_dev { 197 struct list_head list; 198 struct mutex lock; 199 200 char name[8]; 201 unsigned long flags; 202 __u16 id; 203 __u8 bus; 204 __u8 dev_type; 205 bdaddr_t bdaddr; 206 bdaddr_t setup_addr; 207 bdaddr_t public_addr; 208 bdaddr_t random_addr; 209 bdaddr_t static_addr; 210 __u8 adv_addr_type; 211 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 212 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 213 __u8 eir[HCI_MAX_EIR_LENGTH]; 214 __u16 appearance; 215 __u8 dev_class[3]; 216 __u8 major_class; 217 __u8 minor_class; 218 __u8 max_page; 219 __u8 features[HCI_MAX_PAGES][8]; 220 __u8 le_features[8]; 221 __u8 le_white_list_size; 222 __u8 le_states[8]; 223 __u8 commands[64]; 224 __u8 hci_ver; 225 __u16 hci_rev; 226 __u8 lmp_ver; 227 __u16 manufacturer; 228 __u16 lmp_subver; 229 __u16 voice_setting; 230 __u8 num_iac; 231 __u8 stored_max_keys; 232 __u8 stored_num_keys; 233 __u8 io_capability; 234 __s8 inq_tx_power; 235 __u16 page_scan_interval; 236 __u16 page_scan_window; 237 __u8 page_scan_type; 238 __u8 le_adv_channel_map; 239 __u16 le_adv_min_interval; 240 __u16 le_adv_max_interval; 241 __u8 le_scan_type; 242 __u16 le_scan_interval; 243 __u16 le_scan_window; 244 __u16 le_conn_min_interval; 245 __u16 le_conn_max_interval; 246 __u16 le_conn_latency; 247 __u16 le_supv_timeout; 248 __u16 le_def_tx_len; 249 __u16 le_def_tx_time; 250 __u16 le_max_tx_len; 251 __u16 le_max_tx_time; 252 __u16 le_max_rx_len; 253 __u16 le_max_rx_time; 254 __u16 discov_interleaved_timeout; 255 __u16 conn_info_min_age; 256 __u16 conn_info_max_age; 257 __u8 ssp_debug_mode; 258 __u8 hw_error_code; 259 __u32 clock; 260 261 __u16 devid_source; 262 __u16 devid_vendor; 263 __u16 devid_product; 264 __u16 devid_version; 265 266 __u16 pkt_type; 267 __u16 esco_type; 268 __u16 link_policy; 269 __u16 link_mode; 270 271 __u32 idle_timeout; 272 __u16 sniff_min_interval; 273 __u16 sniff_max_interval; 274 275 __u8 amp_status; 276 __u32 amp_total_bw; 277 __u32 amp_max_bw; 278 __u32 amp_min_latency; 279 __u32 amp_max_pdu; 280 __u8 amp_type; 281 __u16 amp_pal_cap; 282 __u16 amp_assoc_size; 283 __u32 amp_max_flush_to; 284 __u32 amp_be_flush_to; 285 286 struct amp_assoc loc_assoc; 287 288 __u8 flow_ctl_mode; 289 290 unsigned int auto_accept_delay; 291 292 unsigned long quirks; 293 294 atomic_t cmd_cnt; 295 unsigned int acl_cnt; 296 unsigned int sco_cnt; 297 unsigned int le_cnt; 298 299 unsigned int acl_mtu; 300 unsigned int sco_mtu; 301 unsigned int le_mtu; 302 unsigned int acl_pkts; 303 unsigned int sco_pkts; 304 unsigned int le_pkts; 305 306 __u16 block_len; 307 __u16 block_mtu; 308 __u16 num_blocks; 309 __u16 block_cnt; 310 311 unsigned long acl_last_tx; 312 unsigned long sco_last_tx; 313 unsigned long le_last_tx; 314 315 struct workqueue_struct *workqueue; 316 struct workqueue_struct *req_workqueue; 317 318 struct work_struct power_on; 319 struct delayed_work power_off; 320 struct work_struct error_reset; 321 322 __u16 discov_timeout; 323 struct delayed_work discov_off; 324 325 struct delayed_work service_cache; 326 327 struct delayed_work cmd_timer; 328 329 struct work_struct rx_work; 330 struct work_struct cmd_work; 331 struct work_struct tx_work; 332 333 struct work_struct discov_update; 334 struct work_struct bg_scan_update; 335 struct work_struct scan_update; 336 struct work_struct connectable_update; 337 struct work_struct discoverable_update; 338 struct delayed_work le_scan_disable; 339 struct delayed_work le_scan_restart; 340 341 struct sk_buff_head rx_q; 342 struct sk_buff_head raw_q; 343 struct sk_buff_head cmd_q; 344 345 struct sk_buff *sent_cmd; 346 347 struct mutex req_lock; 348 wait_queue_head_t req_wait_q; 349 __u32 req_status; 350 __u32 req_result; 351 struct sk_buff *req_skb; 352 353 void *smp_data; 354 void *smp_bredr_data; 355 356 struct discovery_state discovery; 357 struct hci_conn_hash conn_hash; 358 359 struct list_head mgmt_pending; 360 struct list_head blacklist; 361 struct list_head whitelist; 362 struct list_head uuids; 363 struct list_head link_keys; 364 struct list_head long_term_keys; 365 struct list_head identity_resolving_keys; 366 struct list_head remote_oob_data; 367 struct list_head le_white_list; 368 struct list_head le_conn_params; 369 struct list_head pend_le_conns; 370 struct list_head pend_le_reports; 371 372 struct hci_dev_stats stat; 373 374 atomic_t promisc; 375 376 const char *hw_info; 377 const char *fw_info; 378 struct dentry *debugfs; 379 380 struct device dev; 381 382 struct rfkill *rfkill; 383 384 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 385 386 __s8 adv_tx_power; 387 __u8 adv_data[HCI_MAX_AD_LENGTH]; 388 __u8 adv_data_len; 389 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; 390 __u8 scan_rsp_data_len; 391 392 struct list_head adv_instances; 393 unsigned int adv_instance_cnt; 394 __u8 cur_adv_instance; 395 __u16 adv_instance_timeout; 396 struct delayed_work adv_instance_expire; 397 398 __u8 irk[16]; 399 __u32 rpa_timeout; 400 struct delayed_work rpa_expired; 401 bdaddr_t rpa; 402 403 #if IS_ENABLED(CONFIG_BT_LEDS) 404 struct led_trigger *power_led; 405 #endif 406 407 int (*open)(struct hci_dev *hdev); 408 int (*close)(struct hci_dev *hdev); 409 int (*flush)(struct hci_dev *hdev); 410 int (*setup)(struct hci_dev *hdev); 411 int (*shutdown)(struct hci_dev *hdev); 412 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 413 void (*notify)(struct hci_dev *hdev, unsigned int evt); 414 void (*hw_error)(struct hci_dev *hdev, u8 code); 415 int (*post_init)(struct hci_dev *hdev); 416 int (*set_diag)(struct hci_dev *hdev, bool enable); 417 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 418 }; 419 420 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 421 422 struct hci_conn { 423 struct list_head list; 424 425 atomic_t refcnt; 426 427 bdaddr_t dst; 428 __u8 dst_type; 429 bdaddr_t src; 430 __u8 src_type; 431 bdaddr_t init_addr; 432 __u8 init_addr_type; 433 bdaddr_t resp_addr; 434 __u8 resp_addr_type; 435 __u16 handle; 436 __u16 state; 437 __u8 mode; 438 __u8 type; 439 __u8 role; 440 bool out; 441 __u8 attempt; 442 __u8 dev_class[3]; 443 __u8 features[HCI_MAX_PAGES][8]; 444 __u16 pkt_type; 445 __u16 link_policy; 446 __u8 key_type; 447 __u8 auth_type; 448 __u8 sec_level; 449 __u8 pending_sec_level; 450 __u8 pin_length; 451 __u8 enc_key_size; 452 __u8 io_capability; 453 __u32 passkey_notify; 454 __u8 passkey_entered; 455 __u16 disc_timeout; 456 __u16 conn_timeout; 457 __u16 setting; 458 __u16 le_conn_min_interval; 459 __u16 le_conn_max_interval; 460 __u16 le_conn_interval; 461 __u16 le_conn_latency; 462 __u16 le_supv_timeout; 463 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 464 __u8 le_adv_data_len; 465 __s8 rssi; 466 __s8 tx_power; 467 __s8 max_tx_power; 468 unsigned long flags; 469 470 __u32 clock; 471 __u16 clock_accuracy; 472 473 unsigned long conn_info_timestamp; 474 475 __u8 remote_cap; 476 __u8 remote_auth; 477 __u8 remote_id; 478 479 unsigned int sent; 480 481 struct sk_buff_head data_q; 482 struct list_head chan_list; 483 484 struct delayed_work disc_work; 485 struct delayed_work auto_accept_work; 486 struct delayed_work idle_work; 487 struct delayed_work le_conn_timeout; 488 struct work_struct le_scan_cleanup; 489 490 struct device dev; 491 struct dentry *debugfs; 492 493 struct hci_dev *hdev; 494 void *l2cap_data; 495 void *sco_data; 496 struct amp_mgr *amp_mgr; 497 498 struct hci_conn *link; 499 500 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 501 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 502 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 503 }; 504 505 struct hci_chan { 506 struct list_head list; 507 __u16 handle; 508 struct hci_conn *conn; 509 struct sk_buff_head data_q; 510 unsigned int sent; 511 __u8 state; 512 }; 513 514 struct hci_conn_params { 515 struct list_head list; 516 struct list_head action; 517 518 bdaddr_t addr; 519 u8 addr_type; 520 521 u16 conn_min_interval; 522 u16 conn_max_interval; 523 u16 conn_latency; 524 u16 supervision_timeout; 525 526 enum { 527 HCI_AUTO_CONN_DISABLED, 528 HCI_AUTO_CONN_REPORT, 529 HCI_AUTO_CONN_DIRECT, 530 HCI_AUTO_CONN_ALWAYS, 531 HCI_AUTO_CONN_LINK_LOSS, 532 HCI_AUTO_CONN_EXPLICIT, 533 } auto_connect; 534 535 struct hci_conn *conn; 536 bool explicit_connect; 537 }; 538 539 extern struct list_head hci_dev_list; 540 extern struct list_head hci_cb_list; 541 extern rwlock_t hci_dev_list_lock; 542 extern struct mutex hci_cb_list_lock; 543 544 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 545 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 546 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 547 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 548 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 549 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 550 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 551 552 #define hci_dev_clear_volatile_flags(hdev) \ 553 do { \ 554 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 555 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 556 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 557 } while (0) 558 559 /* ----- HCI interface to upper protocols ----- */ 560 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 561 int l2cap_disconn_ind(struct hci_conn *hcon); 562 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 563 564 #if IS_ENABLED(CONFIG_BT_BREDR) 565 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 566 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 567 #else 568 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 569 __u8 *flags) 570 { 571 return 0; 572 } 573 574 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 575 { 576 } 577 #endif 578 579 /* ----- Inquiry cache ----- */ 580 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 581 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 582 583 static inline void discovery_init(struct hci_dev *hdev) 584 { 585 hdev->discovery.state = DISCOVERY_STOPPED; 586 INIT_LIST_HEAD(&hdev->discovery.all); 587 INIT_LIST_HEAD(&hdev->discovery.unknown); 588 INIT_LIST_HEAD(&hdev->discovery.resolve); 589 hdev->discovery.report_invalid_rssi = true; 590 hdev->discovery.rssi = HCI_RSSI_INVALID; 591 } 592 593 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 594 { 595 hdev->discovery.result_filtering = false; 596 hdev->discovery.report_invalid_rssi = true; 597 hdev->discovery.rssi = HCI_RSSI_INVALID; 598 hdev->discovery.uuid_count = 0; 599 kfree(hdev->discovery.uuids); 600 hdev->discovery.uuids = NULL; 601 hdev->discovery.scan_start = 0; 602 hdev->discovery.scan_duration = 0; 603 } 604 605 bool hci_discovery_active(struct hci_dev *hdev); 606 607 void hci_discovery_set_state(struct hci_dev *hdev, int state); 608 609 static inline int inquiry_cache_empty(struct hci_dev *hdev) 610 { 611 return list_empty(&hdev->discovery.all); 612 } 613 614 static inline long inquiry_cache_age(struct hci_dev *hdev) 615 { 616 struct discovery_state *c = &hdev->discovery; 617 return jiffies - c->timestamp; 618 } 619 620 static inline long inquiry_entry_age(struct inquiry_entry *e) 621 { 622 return jiffies - e->timestamp; 623 } 624 625 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 626 bdaddr_t *bdaddr); 627 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 628 bdaddr_t *bdaddr); 629 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 630 bdaddr_t *bdaddr, 631 int state); 632 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 633 struct inquiry_entry *ie); 634 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 635 bool name_known); 636 void hci_inquiry_cache_flush(struct hci_dev *hdev); 637 638 /* ----- HCI Connections ----- */ 639 enum { 640 HCI_CONN_AUTH_PEND, 641 HCI_CONN_REAUTH_PEND, 642 HCI_CONN_ENCRYPT_PEND, 643 HCI_CONN_RSWITCH_PEND, 644 HCI_CONN_MODE_CHANGE_PEND, 645 HCI_CONN_SCO_SETUP_PEND, 646 HCI_CONN_MGMT_CONNECTED, 647 HCI_CONN_SSP_ENABLED, 648 HCI_CONN_SC_ENABLED, 649 HCI_CONN_AES_CCM, 650 HCI_CONN_POWER_SAVE, 651 HCI_CONN_FLUSH_KEY, 652 HCI_CONN_ENCRYPT, 653 HCI_CONN_AUTH, 654 HCI_CONN_SECURE, 655 HCI_CONN_FIPS, 656 HCI_CONN_STK_ENCRYPT, 657 HCI_CONN_AUTH_INITIATOR, 658 HCI_CONN_DROP, 659 HCI_CONN_PARAM_REMOVAL_PEND, 660 HCI_CONN_NEW_LINK_KEY, 661 HCI_CONN_SCANNING, 662 HCI_CONN_AUTH_FAILURE, 663 }; 664 665 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 666 { 667 struct hci_dev *hdev = conn->hdev; 668 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 669 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 670 } 671 672 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 673 { 674 struct hci_dev *hdev = conn->hdev; 675 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 676 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 677 } 678 679 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 680 { 681 struct hci_conn_hash *h = &hdev->conn_hash; 682 list_add_rcu(&c->list, &h->list); 683 switch (c->type) { 684 case ACL_LINK: 685 h->acl_num++; 686 break; 687 case AMP_LINK: 688 h->amp_num++; 689 break; 690 case LE_LINK: 691 h->le_num++; 692 if (c->role == HCI_ROLE_SLAVE) 693 h->le_num_slave++; 694 break; 695 case SCO_LINK: 696 case ESCO_LINK: 697 h->sco_num++; 698 break; 699 } 700 } 701 702 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 703 { 704 struct hci_conn_hash *h = &hdev->conn_hash; 705 706 list_del_rcu(&c->list); 707 synchronize_rcu(); 708 709 switch (c->type) { 710 case ACL_LINK: 711 h->acl_num--; 712 break; 713 case AMP_LINK: 714 h->amp_num--; 715 break; 716 case LE_LINK: 717 h->le_num--; 718 if (c->role == HCI_ROLE_SLAVE) 719 h->le_num_slave--; 720 break; 721 case SCO_LINK: 722 case ESCO_LINK: 723 h->sco_num--; 724 break; 725 } 726 } 727 728 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 729 { 730 struct hci_conn_hash *h = &hdev->conn_hash; 731 switch (type) { 732 case ACL_LINK: 733 return h->acl_num; 734 case AMP_LINK: 735 return h->amp_num; 736 case LE_LINK: 737 return h->le_num; 738 case SCO_LINK: 739 case ESCO_LINK: 740 return h->sco_num; 741 default: 742 return 0; 743 } 744 } 745 746 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 747 { 748 struct hci_conn_hash *c = &hdev->conn_hash; 749 750 return c->acl_num + c->amp_num + c->sco_num + c->le_num; 751 } 752 753 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 754 { 755 struct hci_conn_hash *h = &hdev->conn_hash; 756 struct hci_conn *c; 757 __u8 type = INVALID_LINK; 758 759 rcu_read_lock(); 760 761 list_for_each_entry_rcu(c, &h->list, list) { 762 if (c->handle == handle) { 763 type = c->type; 764 break; 765 } 766 } 767 768 rcu_read_unlock(); 769 770 return type; 771 } 772 773 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 774 __u16 handle) 775 { 776 struct hci_conn_hash *h = &hdev->conn_hash; 777 struct hci_conn *c; 778 779 rcu_read_lock(); 780 781 list_for_each_entry_rcu(c, &h->list, list) { 782 if (c->handle == handle) { 783 rcu_read_unlock(); 784 return c; 785 } 786 } 787 rcu_read_unlock(); 788 789 return NULL; 790 } 791 792 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 793 __u8 type, bdaddr_t *ba) 794 { 795 struct hci_conn_hash *h = &hdev->conn_hash; 796 struct hci_conn *c; 797 798 rcu_read_lock(); 799 800 list_for_each_entry_rcu(c, &h->list, list) { 801 if (c->type == type && !bacmp(&c->dst, ba)) { 802 rcu_read_unlock(); 803 return c; 804 } 805 } 806 807 rcu_read_unlock(); 808 809 return NULL; 810 } 811 812 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 813 bdaddr_t *ba, 814 __u8 ba_type) 815 { 816 struct hci_conn_hash *h = &hdev->conn_hash; 817 struct hci_conn *c; 818 819 rcu_read_lock(); 820 821 list_for_each_entry_rcu(c, &h->list, list) { 822 if (c->type != LE_LINK) 823 continue; 824 825 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 826 rcu_read_unlock(); 827 return c; 828 } 829 } 830 831 rcu_read_unlock(); 832 833 return NULL; 834 } 835 836 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 837 __u8 type, __u16 state) 838 { 839 struct hci_conn_hash *h = &hdev->conn_hash; 840 struct hci_conn *c; 841 842 rcu_read_lock(); 843 844 list_for_each_entry_rcu(c, &h->list, list) { 845 if (c->type == type && c->state == state) { 846 rcu_read_unlock(); 847 return c; 848 } 849 } 850 851 rcu_read_unlock(); 852 853 return NULL; 854 } 855 856 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 857 { 858 struct hci_conn_hash *h = &hdev->conn_hash; 859 struct hci_conn *c; 860 861 rcu_read_lock(); 862 863 list_for_each_entry_rcu(c, &h->list, list) { 864 if (c->type == LE_LINK && c->state == BT_CONNECT && 865 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 866 rcu_read_unlock(); 867 return c; 868 } 869 } 870 871 rcu_read_unlock(); 872 873 return NULL; 874 } 875 876 int hci_disconnect(struct hci_conn *conn, __u8 reason); 877 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 878 void hci_sco_setup(struct hci_conn *conn, __u8 status); 879 880 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 881 u8 role); 882 int hci_conn_del(struct hci_conn *conn); 883 void hci_conn_hash_flush(struct hci_dev *hdev); 884 void hci_conn_check_pending(struct hci_dev *hdev); 885 886 struct hci_chan *hci_chan_create(struct hci_conn *conn); 887 void hci_chan_del(struct hci_chan *chan); 888 void hci_chan_list_flush(struct hci_conn *conn); 889 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 890 891 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 892 u8 dst_type, u8 sec_level, 893 u16 conn_timeout); 894 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 895 u8 dst_type, u8 sec_level, u16 conn_timeout, 896 u8 role); 897 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 898 u8 sec_level, u8 auth_type); 899 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 900 __u16 setting); 901 int hci_conn_check_link_mode(struct hci_conn *conn); 902 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 903 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 904 bool initiator); 905 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 906 907 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 908 909 void hci_le_conn_failed(struct hci_conn *conn, u8 status); 910 911 /* 912 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 913 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 914 * working or anything else. They just guarantee that the object is available 915 * and can be dereferenced. So you can use its locks, local variables and any 916 * other constant data. 917 * Before accessing runtime data, you _must_ lock the object and then check that 918 * it is still running. As soon as you release the locks, the connection might 919 * get dropped, though. 920 * 921 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 922 * how long the underlying connection is held. So every channel that runs on the 923 * hci_conn object calls this to prevent the connection from disappearing. As 924 * long as you hold a device, you must also guarantee that you have a valid 925 * reference to the device via hci_conn_get() (or the initial reference from 926 * hci_conn_add()). 927 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 928 * break because nobody cares for that. But this means, we cannot use 929 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 930 */ 931 932 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 933 { 934 get_device(&conn->dev); 935 return conn; 936 } 937 938 static inline void hci_conn_put(struct hci_conn *conn) 939 { 940 put_device(&conn->dev); 941 } 942 943 static inline void hci_conn_hold(struct hci_conn *conn) 944 { 945 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 946 947 atomic_inc(&conn->refcnt); 948 cancel_delayed_work(&conn->disc_work); 949 } 950 951 static inline void hci_conn_drop(struct hci_conn *conn) 952 { 953 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 954 955 if (atomic_dec_and_test(&conn->refcnt)) { 956 unsigned long timeo; 957 958 switch (conn->type) { 959 case ACL_LINK: 960 case LE_LINK: 961 cancel_delayed_work(&conn->idle_work); 962 if (conn->state == BT_CONNECTED) { 963 timeo = conn->disc_timeout; 964 if (!conn->out) 965 timeo *= 2; 966 } else { 967 timeo = 0; 968 } 969 break; 970 971 case AMP_LINK: 972 timeo = conn->disc_timeout; 973 break; 974 975 default: 976 timeo = 0; 977 break; 978 } 979 980 cancel_delayed_work(&conn->disc_work); 981 queue_delayed_work(conn->hdev->workqueue, 982 &conn->disc_work, timeo); 983 } 984 } 985 986 /* ----- HCI Devices ----- */ 987 static inline void hci_dev_put(struct hci_dev *d) 988 { 989 BT_DBG("%s orig refcnt %d", d->name, 990 atomic_read(&d->dev.kobj.kref.refcount)); 991 992 put_device(&d->dev); 993 } 994 995 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 996 { 997 BT_DBG("%s orig refcnt %d", d->name, 998 atomic_read(&d->dev.kobj.kref.refcount)); 999 1000 get_device(&d->dev); 1001 return d; 1002 } 1003 1004 #define hci_dev_lock(d) mutex_lock(&d->lock) 1005 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1006 1007 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1008 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1009 1010 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1011 { 1012 return dev_get_drvdata(&hdev->dev); 1013 } 1014 1015 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1016 { 1017 dev_set_drvdata(&hdev->dev, data); 1018 } 1019 1020 struct hci_dev *hci_dev_get(int index); 1021 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1022 1023 struct hci_dev *hci_alloc_dev(void); 1024 void hci_free_dev(struct hci_dev *hdev); 1025 int hci_register_dev(struct hci_dev *hdev); 1026 void hci_unregister_dev(struct hci_dev *hdev); 1027 int hci_suspend_dev(struct hci_dev *hdev); 1028 int hci_resume_dev(struct hci_dev *hdev); 1029 int hci_reset_dev(struct hci_dev *hdev); 1030 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1031 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1032 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1033 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1034 int hci_dev_open(__u16 dev); 1035 int hci_dev_close(__u16 dev); 1036 int hci_dev_do_close(struct hci_dev *hdev); 1037 int hci_dev_reset(__u16 dev); 1038 int hci_dev_reset_stat(__u16 dev); 1039 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1040 int hci_get_dev_list(void __user *arg); 1041 int hci_get_dev_info(void __user *arg); 1042 int hci_get_conn_list(void __user *arg); 1043 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1044 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1045 int hci_inquiry(void __user *arg); 1046 1047 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1048 bdaddr_t *bdaddr, u8 type); 1049 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1050 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1051 void hci_bdaddr_list_clear(struct list_head *list); 1052 1053 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1054 bdaddr_t *addr, u8 addr_type); 1055 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1056 bdaddr_t *addr, u8 addr_type); 1057 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1058 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1059 1060 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1061 bdaddr_t *addr, 1062 u8 addr_type); 1063 1064 void hci_uuids_clear(struct hci_dev *hdev); 1065 1066 void hci_link_keys_clear(struct hci_dev *hdev); 1067 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1068 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1069 bdaddr_t *bdaddr, u8 *val, u8 type, 1070 u8 pin_len, bool *persistent); 1071 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1072 u8 addr_type, u8 type, u8 authenticated, 1073 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1074 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1075 u8 addr_type, u8 role); 1076 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1077 void hci_smp_ltks_clear(struct hci_dev *hdev); 1078 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1079 1080 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1081 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1082 u8 addr_type); 1083 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1084 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1085 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1086 void hci_smp_irks_clear(struct hci_dev *hdev); 1087 1088 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1089 1090 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1091 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1092 bdaddr_t *bdaddr, u8 bdaddr_type); 1093 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1094 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1095 u8 *hash256, u8 *rand256); 1096 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1097 u8 bdaddr_type); 1098 1099 void hci_adv_instances_clear(struct hci_dev *hdev); 1100 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1101 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1102 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, 1103 u16 adv_data_len, u8 *adv_data, 1104 u16 scan_rsp_len, u8 *scan_rsp_data, 1105 u16 timeout, u16 duration); 1106 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1107 1108 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1109 1110 void hci_init_sysfs(struct hci_dev *hdev); 1111 void hci_conn_init_sysfs(struct hci_conn *conn); 1112 void hci_conn_add_sysfs(struct hci_conn *conn); 1113 void hci_conn_del_sysfs(struct hci_conn *conn); 1114 1115 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1116 1117 /* ----- LMP capabilities ----- */ 1118 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1119 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1120 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1121 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1122 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1123 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1124 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1125 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1126 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1127 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1128 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1129 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1130 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1131 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1132 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1133 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1134 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1135 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1136 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1137 1138 /* ----- Extended LMP capabilities ----- */ 1139 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER) 1140 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE) 1141 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1142 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1143 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1144 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1145 1146 /* ----- Host capabilities ----- */ 1147 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1148 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1149 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1150 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1151 1152 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1153 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1154 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1155 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1156 1157 /* ----- HCI protocols ----- */ 1158 #define HCI_PROTO_DEFER 0x01 1159 1160 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1161 __u8 type, __u8 *flags) 1162 { 1163 switch (type) { 1164 case ACL_LINK: 1165 return l2cap_connect_ind(hdev, bdaddr); 1166 1167 case SCO_LINK: 1168 case ESCO_LINK: 1169 return sco_connect_ind(hdev, bdaddr, flags); 1170 1171 default: 1172 BT_ERR("unknown link type %d", type); 1173 return -EINVAL; 1174 } 1175 } 1176 1177 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1178 { 1179 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1180 return HCI_ERROR_REMOTE_USER_TERM; 1181 1182 return l2cap_disconn_ind(conn); 1183 } 1184 1185 /* ----- HCI callbacks ----- */ 1186 struct hci_cb { 1187 struct list_head list; 1188 1189 char *name; 1190 1191 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1192 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1193 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1194 __u8 encrypt); 1195 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1196 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1197 }; 1198 1199 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1200 { 1201 struct hci_cb *cb; 1202 1203 mutex_lock(&hci_cb_list_lock); 1204 list_for_each_entry(cb, &hci_cb_list, list) { 1205 if (cb->connect_cfm) 1206 cb->connect_cfm(conn, status); 1207 } 1208 mutex_unlock(&hci_cb_list_lock); 1209 1210 if (conn->connect_cfm_cb) 1211 conn->connect_cfm_cb(conn, status); 1212 } 1213 1214 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1215 { 1216 struct hci_cb *cb; 1217 1218 mutex_lock(&hci_cb_list_lock); 1219 list_for_each_entry(cb, &hci_cb_list, list) { 1220 if (cb->disconn_cfm) 1221 cb->disconn_cfm(conn, reason); 1222 } 1223 mutex_unlock(&hci_cb_list_lock); 1224 1225 if (conn->disconn_cfm_cb) 1226 conn->disconn_cfm_cb(conn, reason); 1227 } 1228 1229 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1230 { 1231 struct hci_cb *cb; 1232 __u8 encrypt; 1233 1234 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1235 return; 1236 1237 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1238 1239 mutex_lock(&hci_cb_list_lock); 1240 list_for_each_entry(cb, &hci_cb_list, list) { 1241 if (cb->security_cfm) 1242 cb->security_cfm(conn, status, encrypt); 1243 } 1244 mutex_unlock(&hci_cb_list_lock); 1245 1246 if (conn->security_cfm_cb) 1247 conn->security_cfm_cb(conn, status); 1248 } 1249 1250 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, 1251 __u8 encrypt) 1252 { 1253 struct hci_cb *cb; 1254 1255 if (conn->sec_level == BT_SECURITY_SDP) 1256 conn->sec_level = BT_SECURITY_LOW; 1257 1258 if (conn->pending_sec_level > conn->sec_level) 1259 conn->sec_level = conn->pending_sec_level; 1260 1261 mutex_lock(&hci_cb_list_lock); 1262 list_for_each_entry(cb, &hci_cb_list, list) { 1263 if (cb->security_cfm) 1264 cb->security_cfm(conn, status, encrypt); 1265 } 1266 mutex_unlock(&hci_cb_list_lock); 1267 1268 if (conn->security_cfm_cb) 1269 conn->security_cfm_cb(conn, status); 1270 } 1271 1272 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1273 { 1274 struct hci_cb *cb; 1275 1276 mutex_lock(&hci_cb_list_lock); 1277 list_for_each_entry(cb, &hci_cb_list, list) { 1278 if (cb->key_change_cfm) 1279 cb->key_change_cfm(conn, status); 1280 } 1281 mutex_unlock(&hci_cb_list_lock); 1282 } 1283 1284 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1285 __u8 role) 1286 { 1287 struct hci_cb *cb; 1288 1289 mutex_lock(&hci_cb_list_lock); 1290 list_for_each_entry(cb, &hci_cb_list, list) { 1291 if (cb->role_switch_cfm) 1292 cb->role_switch_cfm(conn, status, role); 1293 } 1294 mutex_unlock(&hci_cb_list_lock); 1295 } 1296 1297 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type, 1298 size_t *data_len) 1299 { 1300 size_t parsed = 0; 1301 1302 if (eir_len < 2) 1303 return NULL; 1304 1305 while (parsed < eir_len - 1) { 1306 u8 field_len = eir[0]; 1307 1308 if (field_len == 0) 1309 break; 1310 1311 parsed += field_len + 1; 1312 1313 if (parsed > eir_len) 1314 break; 1315 1316 if (eir[1] != type) { 1317 eir += field_len + 1; 1318 continue; 1319 } 1320 1321 /* Zero length data */ 1322 if (field_len == 1) 1323 return NULL; 1324 1325 if (data_len) 1326 *data_len = field_len - 1; 1327 1328 return &eir[2]; 1329 } 1330 1331 return NULL; 1332 } 1333 1334 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1335 { 1336 if (addr_type != ADDR_LE_DEV_RANDOM) 1337 return false; 1338 1339 if ((bdaddr->b[5] & 0xc0) == 0x40) 1340 return true; 1341 1342 return false; 1343 } 1344 1345 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1346 { 1347 if (addr_type == ADDR_LE_DEV_PUBLIC) 1348 return true; 1349 1350 /* Check for Random Static address type */ 1351 if ((addr->b[5] & 0xc0) == 0xc0) 1352 return true; 1353 1354 return false; 1355 } 1356 1357 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1358 bdaddr_t *bdaddr, u8 addr_type) 1359 { 1360 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1361 return NULL; 1362 1363 return hci_find_irk_by_rpa(hdev, bdaddr); 1364 } 1365 1366 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1367 u16 to_multiplier) 1368 { 1369 u16 max_latency; 1370 1371 if (min > max || min < 6 || max > 3200) 1372 return -EINVAL; 1373 1374 if (to_multiplier < 10 || to_multiplier > 3200) 1375 return -EINVAL; 1376 1377 if (max >= to_multiplier * 8) 1378 return -EINVAL; 1379 1380 max_latency = (to_multiplier * 4 / max) - 1; 1381 if (latency > 499 || latency > max_latency) 1382 return -EINVAL; 1383 1384 return 0; 1385 } 1386 1387 int hci_register_cb(struct hci_cb *hcb); 1388 int hci_unregister_cb(struct hci_cb *hcb); 1389 1390 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1391 const void *param, u32 timeout); 1392 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, 1393 const void *param, u8 event, u32 timeout); 1394 1395 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1396 const void *param); 1397 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1398 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1399 1400 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1401 1402 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1403 const void *param, u32 timeout); 1404 1405 /* ----- HCI Sockets ----- */ 1406 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 1407 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 1408 int flag, struct sock *skip_sk); 1409 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 1410 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 1411 void *data, u16 data_len, ktime_t tstamp, 1412 int flag, struct sock *skip_sk); 1413 1414 void hci_sock_dev_event(struct hci_dev *hdev, int event); 1415 1416 #define HCI_MGMT_VAR_LEN BIT(0) 1417 #define HCI_MGMT_NO_HDEV BIT(1) 1418 #define HCI_MGMT_UNTRUSTED BIT(2) 1419 #define HCI_MGMT_UNCONFIGURED BIT(3) 1420 1421 struct hci_mgmt_handler { 1422 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 1423 u16 data_len); 1424 size_t data_len; 1425 unsigned long flags; 1426 }; 1427 1428 struct hci_mgmt_chan { 1429 struct list_head list; 1430 unsigned short channel; 1431 size_t handler_count; 1432 const struct hci_mgmt_handler *handlers; 1433 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 1434 }; 1435 1436 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 1437 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 1438 1439 /* Management interface */ 1440 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 1441 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 1442 BIT(BDADDR_LE_RANDOM)) 1443 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 1444 BIT(BDADDR_LE_PUBLIC) | \ 1445 BIT(BDADDR_LE_RANDOM)) 1446 1447 /* These LE scan and inquiry parameters were chosen according to LE General 1448 * Discovery Procedure specification. 1449 */ 1450 #define DISCOV_LE_SCAN_WIN 0x12 1451 #define DISCOV_LE_SCAN_INT 0x12 1452 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 1453 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 1454 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 1455 #define DISCOV_BREDR_INQUIRY_LEN 0x08 1456 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 1457 1458 void mgmt_fill_version_info(void *ver); 1459 int mgmt_new_settings(struct hci_dev *hdev); 1460 void mgmt_index_added(struct hci_dev *hdev); 1461 void mgmt_index_removed(struct hci_dev *hdev); 1462 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 1463 void mgmt_power_on(struct hci_dev *hdev, int err); 1464 void __mgmt_power_off(struct hci_dev *hdev); 1465 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 1466 bool persistent); 1467 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 1468 u32 flags, u8 *name, u8 name_len); 1469 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 1470 u8 link_type, u8 addr_type, u8 reason, 1471 bool mgmt_connected); 1472 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 1473 u8 link_type, u8 addr_type, u8 status); 1474 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1475 u8 addr_type, u8 status); 1476 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 1477 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1478 u8 status); 1479 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1480 u8 status); 1481 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1482 u8 link_type, u8 addr_type, u32 value, 1483 u8 confirm_hint); 1484 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1485 u8 link_type, u8 addr_type, u8 status); 1486 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1487 u8 link_type, u8 addr_type, u8 status); 1488 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1489 u8 link_type, u8 addr_type); 1490 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1491 u8 link_type, u8 addr_type, u8 status); 1492 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1493 u8 link_type, u8 addr_type, u8 status); 1494 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 1495 u8 link_type, u8 addr_type, u32 passkey, 1496 u8 entered); 1497 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 1498 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 1499 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1500 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 1501 u8 status); 1502 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 1503 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 1504 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 1505 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1506 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 1507 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len); 1508 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1509 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 1510 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 1511 bool mgmt_powering_down(struct hci_dev *hdev); 1512 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 1513 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 1514 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 1515 bool persistent); 1516 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 1517 u8 bdaddr_type, u8 store_hint, u16 min_interval, 1518 u16 max_interval, u16 latency, u16 timeout); 1519 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 1520 bool mgmt_get_connectable(struct hci_dev *hdev); 1521 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status); 1522 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status); 1523 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 1524 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 1525 u8 instance); 1526 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 1527 u8 instance); 1528 1529 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 1530 u16 to_multiplier); 1531 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 1532 __u8 ltk[16], __u8 key_size); 1533 1534 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 1535 u8 *bdaddr_type); 1536 1537 #define SCO_AIRMODE_MASK 0x0003 1538 #define SCO_AIRMODE_CVSD 0x0000 1539 #define SCO_AIRMODE_TRANSP 0x0003 1540 1541 #endif /* __HCI_CORE_H */ 1542