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 <linux/rculist.h> 30 31 #include <net/bluetooth/hci.h> 32 #include <net/bluetooth/hci_sock.h> 33 34 /* HCI priority */ 35 #define HCI_PRIO_MAX 7 36 37 /* HCI Core structures */ 38 struct inquiry_data { 39 bdaddr_t bdaddr; 40 __u8 pscan_rep_mode; 41 __u8 pscan_period_mode; 42 __u8 pscan_mode; 43 __u8 dev_class[3]; 44 __le16 clock_offset; 45 __s8 rssi; 46 __u8 ssp_mode; 47 }; 48 49 struct inquiry_entry { 50 struct list_head all; /* inq_cache.all */ 51 struct list_head list; /* unknown or resolve */ 52 enum { 53 NAME_NOT_KNOWN, 54 NAME_NEEDED, 55 NAME_PENDING, 56 NAME_KNOWN, 57 } name_state; 58 __u32 timestamp; 59 struct inquiry_data data; 60 }; 61 62 struct discovery_state { 63 int type; 64 enum { 65 DISCOVERY_STOPPED, 66 DISCOVERY_STARTING, 67 DISCOVERY_FINDING, 68 DISCOVERY_RESOLVING, 69 DISCOVERY_STOPPING, 70 } state; 71 struct list_head all; /* All devices found during inquiry */ 72 struct list_head unknown; /* Name state not known */ 73 struct list_head resolve; /* Name needs to be resolved */ 74 __u32 timestamp; 75 bdaddr_t last_adv_addr; 76 u8 last_adv_addr_type; 77 s8 last_adv_rssi; 78 u32 last_adv_flags; 79 u8 last_adv_data[HCI_MAX_AD_LENGTH]; 80 u8 last_adv_data_len; 81 bool report_invalid_rssi; 82 bool result_filtering; 83 bool limited; 84 s8 rssi; 85 u16 uuid_count; 86 u8 (*uuids)[16]; 87 unsigned long scan_start; 88 unsigned long scan_duration; 89 }; 90 91 struct hci_conn_hash { 92 struct list_head list; 93 unsigned int acl_num; 94 unsigned int amp_num; 95 unsigned int sco_num; 96 unsigned int le_num; 97 unsigned int le_num_slave; 98 }; 99 100 struct bdaddr_list { 101 struct list_head list; 102 bdaddr_t bdaddr; 103 u8 bdaddr_type; 104 }; 105 106 struct bdaddr_list_with_irk { 107 struct list_head list; 108 bdaddr_t bdaddr; 109 u8 bdaddr_type; 110 u8 peer_irk[16]; 111 u8 local_irk[16]; 112 }; 113 114 struct bt_uuid { 115 struct list_head list; 116 u8 uuid[16]; 117 u8 size; 118 u8 svc_hint; 119 }; 120 121 struct smp_csrk { 122 bdaddr_t bdaddr; 123 u8 bdaddr_type; 124 u8 type; 125 u8 val[16]; 126 }; 127 128 struct smp_ltk { 129 struct list_head list; 130 struct rcu_head rcu; 131 bdaddr_t bdaddr; 132 u8 bdaddr_type; 133 u8 authenticated; 134 u8 type; 135 u8 enc_size; 136 __le16 ediv; 137 __le64 rand; 138 u8 val[16]; 139 }; 140 141 struct smp_irk { 142 struct list_head list; 143 struct rcu_head rcu; 144 bdaddr_t rpa; 145 bdaddr_t bdaddr; 146 u8 addr_type; 147 u8 val[16]; 148 }; 149 150 struct link_key { 151 struct list_head list; 152 struct rcu_head rcu; 153 bdaddr_t bdaddr; 154 u8 type; 155 u8 val[HCI_LINK_KEY_SIZE]; 156 u8 pin_len; 157 }; 158 159 struct oob_data { 160 struct list_head list; 161 bdaddr_t bdaddr; 162 u8 bdaddr_type; 163 u8 present; 164 u8 hash192[16]; 165 u8 rand192[16]; 166 u8 hash256[16]; 167 u8 rand256[16]; 168 }; 169 170 struct adv_info { 171 struct list_head list; 172 bool pending; 173 __u8 instance; 174 __u32 flags; 175 __u16 timeout; 176 __u16 remaining_time; 177 __u16 duration; 178 __u16 adv_data_len; 179 __u8 adv_data[HCI_MAX_AD_LENGTH]; 180 __u16 scan_rsp_len; 181 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; 182 __s8 tx_power; 183 bdaddr_t random_addr; 184 bool rpa_expired; 185 struct delayed_work rpa_expired_cb; 186 }; 187 188 #define HCI_MAX_ADV_INSTANCES 5 189 #define HCI_DEFAULT_ADV_DURATION 2 190 191 #define HCI_MAX_SHORT_NAME_LENGTH 10 192 193 /* Default LE RPA expiry time, 15 minutes */ 194 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 195 196 /* Default min/max age of connection information (1s/3s) */ 197 #define DEFAULT_CONN_INFO_MIN_AGE 1000 198 #define DEFAULT_CONN_INFO_MAX_AGE 3000 199 200 struct amp_assoc { 201 __u16 len; 202 __u16 offset; 203 __u16 rem_len; 204 __u16 len_so_far; 205 __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; 206 }; 207 208 #define HCI_MAX_PAGES 3 209 210 struct hci_dev { 211 struct list_head list; 212 struct mutex lock; 213 214 char name[8]; 215 unsigned long flags; 216 __u16 id; 217 __u8 bus; 218 __u8 dev_type; 219 bdaddr_t bdaddr; 220 bdaddr_t setup_addr; 221 bdaddr_t public_addr; 222 bdaddr_t random_addr; 223 bdaddr_t static_addr; 224 __u8 adv_addr_type; 225 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 226 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 227 __u8 eir[HCI_MAX_EIR_LENGTH]; 228 __u16 appearance; 229 __u8 dev_class[3]; 230 __u8 major_class; 231 __u8 minor_class; 232 __u8 max_page; 233 __u8 features[HCI_MAX_PAGES][8]; 234 __u8 le_features[8]; 235 __u8 le_white_list_size; 236 __u8 le_resolv_list_size; 237 __u8 le_num_of_adv_sets; 238 __u8 le_states[8]; 239 __u8 commands[64]; 240 __u8 hci_ver; 241 __u16 hci_rev; 242 __u8 lmp_ver; 243 __u16 manufacturer; 244 __u16 lmp_subver; 245 __u16 voice_setting; 246 __u8 num_iac; 247 __u8 stored_max_keys; 248 __u8 stored_num_keys; 249 __u8 io_capability; 250 __s8 inq_tx_power; 251 __u16 page_scan_interval; 252 __u16 page_scan_window; 253 __u8 page_scan_type; 254 __u8 le_adv_channel_map; 255 __u16 le_adv_min_interval; 256 __u16 le_adv_max_interval; 257 __u8 le_scan_type; 258 __u16 le_scan_interval; 259 __u16 le_scan_window; 260 __u16 le_conn_min_interval; 261 __u16 le_conn_max_interval; 262 __u16 le_conn_latency; 263 __u16 le_supv_timeout; 264 __u16 le_def_tx_len; 265 __u16 le_def_tx_time; 266 __u16 le_max_tx_len; 267 __u16 le_max_tx_time; 268 __u16 le_max_rx_len; 269 __u16 le_max_rx_time; 270 __u8 le_max_key_size; 271 __u8 le_min_key_size; 272 __u16 discov_interleaved_timeout; 273 __u16 conn_info_min_age; 274 __u16 conn_info_max_age; 275 __u8 ssp_debug_mode; 276 __u8 hw_error_code; 277 __u32 clock; 278 279 __u16 devid_source; 280 __u16 devid_vendor; 281 __u16 devid_product; 282 __u16 devid_version; 283 284 __u16 pkt_type; 285 __u16 esco_type; 286 __u16 link_policy; 287 __u16 link_mode; 288 289 __u32 idle_timeout; 290 __u16 sniff_min_interval; 291 __u16 sniff_max_interval; 292 293 __u8 amp_status; 294 __u32 amp_total_bw; 295 __u32 amp_max_bw; 296 __u32 amp_min_latency; 297 __u32 amp_max_pdu; 298 __u8 amp_type; 299 __u16 amp_pal_cap; 300 __u16 amp_assoc_size; 301 __u32 amp_max_flush_to; 302 __u32 amp_be_flush_to; 303 304 struct amp_assoc loc_assoc; 305 306 __u8 flow_ctl_mode; 307 308 unsigned int auto_accept_delay; 309 310 unsigned long quirks; 311 312 atomic_t cmd_cnt; 313 unsigned int acl_cnt; 314 unsigned int sco_cnt; 315 unsigned int le_cnt; 316 317 unsigned int acl_mtu; 318 unsigned int sco_mtu; 319 unsigned int le_mtu; 320 unsigned int acl_pkts; 321 unsigned int sco_pkts; 322 unsigned int le_pkts; 323 324 __u16 block_len; 325 __u16 block_mtu; 326 __u16 num_blocks; 327 __u16 block_cnt; 328 329 unsigned long acl_last_tx; 330 unsigned long sco_last_tx; 331 unsigned long le_last_tx; 332 333 __u8 le_tx_def_phys; 334 __u8 le_rx_def_phys; 335 336 struct workqueue_struct *workqueue; 337 struct workqueue_struct *req_workqueue; 338 339 struct work_struct power_on; 340 struct delayed_work power_off; 341 struct work_struct error_reset; 342 343 __u16 discov_timeout; 344 struct delayed_work discov_off; 345 346 struct delayed_work service_cache; 347 348 struct delayed_work cmd_timer; 349 350 struct work_struct rx_work; 351 struct work_struct cmd_work; 352 struct work_struct tx_work; 353 354 struct work_struct discov_update; 355 struct work_struct bg_scan_update; 356 struct work_struct scan_update; 357 struct work_struct connectable_update; 358 struct work_struct discoverable_update; 359 struct delayed_work le_scan_disable; 360 struct delayed_work le_scan_restart; 361 362 struct sk_buff_head rx_q; 363 struct sk_buff_head raw_q; 364 struct sk_buff_head cmd_q; 365 366 struct sk_buff *sent_cmd; 367 368 struct mutex req_lock; 369 wait_queue_head_t req_wait_q; 370 __u32 req_status; 371 __u32 req_result; 372 struct sk_buff *req_skb; 373 374 void *smp_data; 375 void *smp_bredr_data; 376 377 struct discovery_state discovery; 378 struct hci_conn_hash conn_hash; 379 380 struct list_head mgmt_pending; 381 struct list_head blacklist; 382 struct list_head whitelist; 383 struct list_head uuids; 384 struct list_head link_keys; 385 struct list_head long_term_keys; 386 struct list_head identity_resolving_keys; 387 struct list_head remote_oob_data; 388 struct list_head le_white_list; 389 struct list_head le_resolv_list; 390 struct list_head le_conn_params; 391 struct list_head pend_le_conns; 392 struct list_head pend_le_reports; 393 394 struct hci_dev_stats stat; 395 396 atomic_t promisc; 397 398 const char *hw_info; 399 const char *fw_info; 400 struct dentry *debugfs; 401 402 struct device dev; 403 404 struct rfkill *rfkill; 405 406 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 407 408 __s8 adv_tx_power; 409 __u8 adv_data[HCI_MAX_AD_LENGTH]; 410 __u8 adv_data_len; 411 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; 412 __u8 scan_rsp_data_len; 413 414 struct list_head adv_instances; 415 unsigned int adv_instance_cnt; 416 __u8 cur_adv_instance; 417 __u16 adv_instance_timeout; 418 struct delayed_work adv_instance_expire; 419 420 __u8 irk[16]; 421 __u32 rpa_timeout; 422 struct delayed_work rpa_expired; 423 bdaddr_t rpa; 424 425 #if IS_ENABLED(CONFIG_BT_LEDS) 426 struct led_trigger *power_led; 427 #endif 428 429 int (*open)(struct hci_dev *hdev); 430 int (*close)(struct hci_dev *hdev); 431 int (*flush)(struct hci_dev *hdev); 432 int (*setup)(struct hci_dev *hdev); 433 int (*shutdown)(struct hci_dev *hdev); 434 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 435 void (*notify)(struct hci_dev *hdev, unsigned int evt); 436 void (*hw_error)(struct hci_dev *hdev, u8 code); 437 int (*post_init)(struct hci_dev *hdev); 438 int (*set_diag)(struct hci_dev *hdev, bool enable); 439 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 440 void (*cmd_timeout)(struct hci_dev *hdev); 441 }; 442 443 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 444 445 struct hci_conn { 446 struct list_head list; 447 448 atomic_t refcnt; 449 450 bdaddr_t dst; 451 __u8 dst_type; 452 bdaddr_t src; 453 __u8 src_type; 454 bdaddr_t init_addr; 455 __u8 init_addr_type; 456 bdaddr_t resp_addr; 457 __u8 resp_addr_type; 458 __u16 handle; 459 __u16 state; 460 __u8 mode; 461 __u8 type; 462 __u8 role; 463 bool out; 464 __u8 attempt; 465 __u8 dev_class[3]; 466 __u8 features[HCI_MAX_PAGES][8]; 467 __u16 pkt_type; 468 __u16 link_policy; 469 __u8 key_type; 470 __u8 auth_type; 471 __u8 sec_level; 472 __u8 pending_sec_level; 473 __u8 pin_length; 474 __u8 enc_key_size; 475 __u8 io_capability; 476 __u32 passkey_notify; 477 __u8 passkey_entered; 478 __u16 disc_timeout; 479 __u16 conn_timeout; 480 __u16 setting; 481 __u16 le_conn_min_interval; 482 __u16 le_conn_max_interval; 483 __u16 le_conn_interval; 484 __u16 le_conn_latency; 485 __u16 le_supv_timeout; 486 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 487 __u8 le_adv_data_len; 488 __s8 rssi; 489 __s8 tx_power; 490 __s8 max_tx_power; 491 unsigned long flags; 492 493 __u32 clock; 494 __u16 clock_accuracy; 495 496 unsigned long conn_info_timestamp; 497 498 __u8 remote_cap; 499 __u8 remote_auth; 500 __u8 remote_id; 501 502 unsigned int sent; 503 504 struct sk_buff_head data_q; 505 struct list_head chan_list; 506 507 struct delayed_work disc_work; 508 struct delayed_work auto_accept_work; 509 struct delayed_work idle_work; 510 struct delayed_work le_conn_timeout; 511 struct work_struct le_scan_cleanup; 512 513 struct device dev; 514 struct dentry *debugfs; 515 516 struct hci_dev *hdev; 517 void *l2cap_data; 518 void *sco_data; 519 struct amp_mgr *amp_mgr; 520 521 struct hci_conn *link; 522 523 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 524 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 525 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 526 }; 527 528 struct hci_chan { 529 struct list_head list; 530 __u16 handle; 531 struct hci_conn *conn; 532 struct sk_buff_head data_q; 533 unsigned int sent; 534 __u8 state; 535 }; 536 537 struct hci_conn_params { 538 struct list_head list; 539 struct list_head action; 540 541 bdaddr_t addr; 542 u8 addr_type; 543 544 u16 conn_min_interval; 545 u16 conn_max_interval; 546 u16 conn_latency; 547 u16 supervision_timeout; 548 549 enum { 550 HCI_AUTO_CONN_DISABLED, 551 HCI_AUTO_CONN_REPORT, 552 HCI_AUTO_CONN_DIRECT, 553 HCI_AUTO_CONN_ALWAYS, 554 HCI_AUTO_CONN_LINK_LOSS, 555 HCI_AUTO_CONN_EXPLICIT, 556 } auto_connect; 557 558 struct hci_conn *conn; 559 bool explicit_connect; 560 }; 561 562 extern struct list_head hci_dev_list; 563 extern struct list_head hci_cb_list; 564 extern rwlock_t hci_dev_list_lock; 565 extern struct mutex hci_cb_list_lock; 566 567 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 568 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 569 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 570 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 571 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 572 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 573 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 574 575 #define hci_dev_clear_volatile_flags(hdev) \ 576 do { \ 577 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 578 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 579 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 580 } while (0) 581 582 /* ----- HCI interface to upper protocols ----- */ 583 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 584 int l2cap_disconn_ind(struct hci_conn *hcon); 585 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 586 587 #if IS_ENABLED(CONFIG_BT_BREDR) 588 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 589 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 590 #else 591 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 592 __u8 *flags) 593 { 594 return 0; 595 } 596 597 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 598 { 599 } 600 #endif 601 602 /* ----- Inquiry cache ----- */ 603 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 604 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 605 606 static inline void discovery_init(struct hci_dev *hdev) 607 { 608 hdev->discovery.state = DISCOVERY_STOPPED; 609 INIT_LIST_HEAD(&hdev->discovery.all); 610 INIT_LIST_HEAD(&hdev->discovery.unknown); 611 INIT_LIST_HEAD(&hdev->discovery.resolve); 612 hdev->discovery.report_invalid_rssi = true; 613 hdev->discovery.rssi = HCI_RSSI_INVALID; 614 } 615 616 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 617 { 618 hdev->discovery.result_filtering = false; 619 hdev->discovery.report_invalid_rssi = true; 620 hdev->discovery.rssi = HCI_RSSI_INVALID; 621 hdev->discovery.uuid_count = 0; 622 kfree(hdev->discovery.uuids); 623 hdev->discovery.uuids = NULL; 624 hdev->discovery.scan_start = 0; 625 hdev->discovery.scan_duration = 0; 626 } 627 628 bool hci_discovery_active(struct hci_dev *hdev); 629 630 void hci_discovery_set_state(struct hci_dev *hdev, int state); 631 632 static inline int inquiry_cache_empty(struct hci_dev *hdev) 633 { 634 return list_empty(&hdev->discovery.all); 635 } 636 637 static inline long inquiry_cache_age(struct hci_dev *hdev) 638 { 639 struct discovery_state *c = &hdev->discovery; 640 return jiffies - c->timestamp; 641 } 642 643 static inline long inquiry_entry_age(struct inquiry_entry *e) 644 { 645 return jiffies - e->timestamp; 646 } 647 648 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 649 bdaddr_t *bdaddr); 650 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 651 bdaddr_t *bdaddr); 652 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 653 bdaddr_t *bdaddr, 654 int state); 655 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 656 struct inquiry_entry *ie); 657 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 658 bool name_known); 659 void hci_inquiry_cache_flush(struct hci_dev *hdev); 660 661 /* ----- HCI Connections ----- */ 662 enum { 663 HCI_CONN_AUTH_PEND, 664 HCI_CONN_REAUTH_PEND, 665 HCI_CONN_ENCRYPT_PEND, 666 HCI_CONN_RSWITCH_PEND, 667 HCI_CONN_MODE_CHANGE_PEND, 668 HCI_CONN_SCO_SETUP_PEND, 669 HCI_CONN_MGMT_CONNECTED, 670 HCI_CONN_SSP_ENABLED, 671 HCI_CONN_SC_ENABLED, 672 HCI_CONN_AES_CCM, 673 HCI_CONN_POWER_SAVE, 674 HCI_CONN_FLUSH_KEY, 675 HCI_CONN_ENCRYPT, 676 HCI_CONN_AUTH, 677 HCI_CONN_SECURE, 678 HCI_CONN_FIPS, 679 HCI_CONN_STK_ENCRYPT, 680 HCI_CONN_AUTH_INITIATOR, 681 HCI_CONN_DROP, 682 HCI_CONN_PARAM_REMOVAL_PEND, 683 HCI_CONN_NEW_LINK_KEY, 684 HCI_CONN_SCANNING, 685 HCI_CONN_AUTH_FAILURE, 686 }; 687 688 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 689 { 690 struct hci_dev *hdev = conn->hdev; 691 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 692 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 693 } 694 695 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 696 { 697 struct hci_dev *hdev = conn->hdev; 698 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 699 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 700 } 701 702 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 703 { 704 struct hci_conn_hash *h = &hdev->conn_hash; 705 list_add_rcu(&c->list, &h->list); 706 switch (c->type) { 707 case ACL_LINK: 708 h->acl_num++; 709 break; 710 case AMP_LINK: 711 h->amp_num++; 712 break; 713 case LE_LINK: 714 h->le_num++; 715 if (c->role == HCI_ROLE_SLAVE) 716 h->le_num_slave++; 717 break; 718 case SCO_LINK: 719 case ESCO_LINK: 720 h->sco_num++; 721 break; 722 } 723 } 724 725 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 726 { 727 struct hci_conn_hash *h = &hdev->conn_hash; 728 729 list_del_rcu(&c->list); 730 synchronize_rcu(); 731 732 switch (c->type) { 733 case ACL_LINK: 734 h->acl_num--; 735 break; 736 case AMP_LINK: 737 h->amp_num--; 738 break; 739 case LE_LINK: 740 h->le_num--; 741 if (c->role == HCI_ROLE_SLAVE) 742 h->le_num_slave--; 743 break; 744 case SCO_LINK: 745 case ESCO_LINK: 746 h->sco_num--; 747 break; 748 } 749 } 750 751 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 752 { 753 struct hci_conn_hash *h = &hdev->conn_hash; 754 switch (type) { 755 case ACL_LINK: 756 return h->acl_num; 757 case AMP_LINK: 758 return h->amp_num; 759 case LE_LINK: 760 return h->le_num; 761 case SCO_LINK: 762 case ESCO_LINK: 763 return h->sco_num; 764 default: 765 return 0; 766 } 767 } 768 769 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 770 { 771 struct hci_conn_hash *c = &hdev->conn_hash; 772 773 return c->acl_num + c->amp_num + c->sco_num + c->le_num; 774 } 775 776 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 777 { 778 struct hci_conn_hash *h = &hdev->conn_hash; 779 struct hci_conn *c; 780 __u8 type = INVALID_LINK; 781 782 rcu_read_lock(); 783 784 list_for_each_entry_rcu(c, &h->list, list) { 785 if (c->handle == handle) { 786 type = c->type; 787 break; 788 } 789 } 790 791 rcu_read_unlock(); 792 793 return type; 794 } 795 796 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 797 __u16 handle) 798 { 799 struct hci_conn_hash *h = &hdev->conn_hash; 800 struct hci_conn *c; 801 802 rcu_read_lock(); 803 804 list_for_each_entry_rcu(c, &h->list, list) { 805 if (c->handle == handle) { 806 rcu_read_unlock(); 807 return c; 808 } 809 } 810 rcu_read_unlock(); 811 812 return NULL; 813 } 814 815 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 816 __u8 type, bdaddr_t *ba) 817 { 818 struct hci_conn_hash *h = &hdev->conn_hash; 819 struct hci_conn *c; 820 821 rcu_read_lock(); 822 823 list_for_each_entry_rcu(c, &h->list, list) { 824 if (c->type == type && !bacmp(&c->dst, ba)) { 825 rcu_read_unlock(); 826 return c; 827 } 828 } 829 830 rcu_read_unlock(); 831 832 return NULL; 833 } 834 835 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 836 bdaddr_t *ba, 837 __u8 ba_type) 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 != LE_LINK) 846 continue; 847 848 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 849 rcu_read_unlock(); 850 return c; 851 } 852 } 853 854 rcu_read_unlock(); 855 856 return NULL; 857 } 858 859 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 860 __u8 type, __u16 state) 861 { 862 struct hci_conn_hash *h = &hdev->conn_hash; 863 struct hci_conn *c; 864 865 rcu_read_lock(); 866 867 list_for_each_entry_rcu(c, &h->list, list) { 868 if (c->type == type && c->state == state) { 869 rcu_read_unlock(); 870 return c; 871 } 872 } 873 874 rcu_read_unlock(); 875 876 return NULL; 877 } 878 879 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 880 { 881 struct hci_conn_hash *h = &hdev->conn_hash; 882 struct hci_conn *c; 883 884 rcu_read_lock(); 885 886 list_for_each_entry_rcu(c, &h->list, list) { 887 if (c->type == LE_LINK && c->state == BT_CONNECT && 888 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 889 rcu_read_unlock(); 890 return c; 891 } 892 } 893 894 rcu_read_unlock(); 895 896 return NULL; 897 } 898 899 int hci_disconnect(struct hci_conn *conn, __u8 reason); 900 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 901 void hci_sco_setup(struct hci_conn *conn, __u8 status); 902 903 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 904 u8 role); 905 int hci_conn_del(struct hci_conn *conn); 906 void hci_conn_hash_flush(struct hci_dev *hdev); 907 void hci_conn_check_pending(struct hci_dev *hdev); 908 909 struct hci_chan *hci_chan_create(struct hci_conn *conn); 910 void hci_chan_del(struct hci_chan *chan); 911 void hci_chan_list_flush(struct hci_conn *conn); 912 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 913 914 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 915 u8 dst_type, u8 sec_level, 916 u16 conn_timeout); 917 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 918 u8 dst_type, u8 sec_level, u16 conn_timeout, 919 u8 role, bdaddr_t *direct_rpa); 920 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 921 u8 sec_level, u8 auth_type); 922 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 923 __u16 setting); 924 int hci_conn_check_link_mode(struct hci_conn *conn); 925 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 926 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 927 bool initiator); 928 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 929 930 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 931 932 void hci_le_conn_failed(struct hci_conn *conn, u8 status); 933 934 /* 935 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 936 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 937 * working or anything else. They just guarantee that the object is available 938 * and can be dereferenced. So you can use its locks, local variables and any 939 * other constant data. 940 * Before accessing runtime data, you _must_ lock the object and then check that 941 * it is still running. As soon as you release the locks, the connection might 942 * get dropped, though. 943 * 944 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 945 * how long the underlying connection is held. So every channel that runs on the 946 * hci_conn object calls this to prevent the connection from disappearing. As 947 * long as you hold a device, you must also guarantee that you have a valid 948 * reference to the device via hci_conn_get() (or the initial reference from 949 * hci_conn_add()). 950 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 951 * break because nobody cares for that. But this means, we cannot use 952 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 953 */ 954 955 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 956 { 957 get_device(&conn->dev); 958 return conn; 959 } 960 961 static inline void hci_conn_put(struct hci_conn *conn) 962 { 963 put_device(&conn->dev); 964 } 965 966 static inline void hci_conn_hold(struct hci_conn *conn) 967 { 968 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 969 970 atomic_inc(&conn->refcnt); 971 cancel_delayed_work(&conn->disc_work); 972 } 973 974 static inline void hci_conn_drop(struct hci_conn *conn) 975 { 976 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 977 978 if (atomic_dec_and_test(&conn->refcnt)) { 979 unsigned long timeo; 980 981 switch (conn->type) { 982 case ACL_LINK: 983 case LE_LINK: 984 cancel_delayed_work(&conn->idle_work); 985 if (conn->state == BT_CONNECTED) { 986 timeo = conn->disc_timeout; 987 if (!conn->out) 988 timeo *= 2; 989 } else { 990 timeo = 0; 991 } 992 break; 993 994 case AMP_LINK: 995 timeo = conn->disc_timeout; 996 break; 997 998 default: 999 timeo = 0; 1000 break; 1001 } 1002 1003 cancel_delayed_work(&conn->disc_work); 1004 queue_delayed_work(conn->hdev->workqueue, 1005 &conn->disc_work, timeo); 1006 } 1007 } 1008 1009 /* ----- HCI Devices ----- */ 1010 static inline void hci_dev_put(struct hci_dev *d) 1011 { 1012 BT_DBG("%s orig refcnt %d", d->name, 1013 kref_read(&d->dev.kobj.kref)); 1014 1015 put_device(&d->dev); 1016 } 1017 1018 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1019 { 1020 BT_DBG("%s orig refcnt %d", d->name, 1021 kref_read(&d->dev.kobj.kref)); 1022 1023 get_device(&d->dev); 1024 return d; 1025 } 1026 1027 #define hci_dev_lock(d) mutex_lock(&d->lock) 1028 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1029 1030 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1031 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1032 1033 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1034 { 1035 return dev_get_drvdata(&hdev->dev); 1036 } 1037 1038 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1039 { 1040 dev_set_drvdata(&hdev->dev, data); 1041 } 1042 1043 struct hci_dev *hci_dev_get(int index); 1044 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1045 1046 struct hci_dev *hci_alloc_dev(void); 1047 void hci_free_dev(struct hci_dev *hdev); 1048 int hci_register_dev(struct hci_dev *hdev); 1049 void hci_unregister_dev(struct hci_dev *hdev); 1050 int hci_suspend_dev(struct hci_dev *hdev); 1051 int hci_resume_dev(struct hci_dev *hdev); 1052 int hci_reset_dev(struct hci_dev *hdev); 1053 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1054 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1055 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1056 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1057 int hci_dev_open(__u16 dev); 1058 int hci_dev_close(__u16 dev); 1059 int hci_dev_do_close(struct hci_dev *hdev); 1060 int hci_dev_reset(__u16 dev); 1061 int hci_dev_reset_stat(__u16 dev); 1062 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1063 int hci_get_dev_list(void __user *arg); 1064 int hci_get_dev_info(void __user *arg); 1065 int hci_get_conn_list(void __user *arg); 1066 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1067 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1068 int hci_inquiry(void __user *arg); 1069 1070 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1071 bdaddr_t *bdaddr, u8 type); 1072 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1073 struct list_head *list, bdaddr_t *bdaddr, 1074 u8 type); 1075 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1076 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1077 u8 type, u8 *peer_irk, u8 *local_irk); 1078 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1079 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1080 u8 type); 1081 void hci_bdaddr_list_clear(struct list_head *list); 1082 1083 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1084 bdaddr_t *addr, u8 addr_type); 1085 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1086 bdaddr_t *addr, u8 addr_type); 1087 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1088 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1089 1090 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1091 bdaddr_t *addr, 1092 u8 addr_type); 1093 1094 void hci_uuids_clear(struct hci_dev *hdev); 1095 1096 void hci_link_keys_clear(struct hci_dev *hdev); 1097 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1098 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1099 bdaddr_t *bdaddr, u8 *val, u8 type, 1100 u8 pin_len, bool *persistent); 1101 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1102 u8 addr_type, u8 type, u8 authenticated, 1103 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1104 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1105 u8 addr_type, u8 role); 1106 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1107 void hci_smp_ltks_clear(struct hci_dev *hdev); 1108 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1109 1110 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1111 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1112 u8 addr_type); 1113 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1114 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1115 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1116 void hci_smp_irks_clear(struct hci_dev *hdev); 1117 1118 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1119 1120 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1121 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1122 bdaddr_t *bdaddr, u8 bdaddr_type); 1123 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1124 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1125 u8 *hash256, u8 *rand256); 1126 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1127 u8 bdaddr_type); 1128 1129 void hci_adv_instances_clear(struct hci_dev *hdev); 1130 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1131 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1132 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, 1133 u16 adv_data_len, u8 *adv_data, 1134 u16 scan_rsp_len, u8 *scan_rsp_data, 1135 u16 timeout, u16 duration); 1136 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1137 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1138 1139 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1140 1141 void hci_init_sysfs(struct hci_dev *hdev); 1142 void hci_conn_init_sysfs(struct hci_conn *conn); 1143 void hci_conn_add_sysfs(struct hci_conn *conn); 1144 void hci_conn_del_sysfs(struct hci_conn *conn); 1145 1146 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1147 1148 /* ----- LMP capabilities ----- */ 1149 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1150 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1151 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1152 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1153 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1154 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1155 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1156 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1157 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1158 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1159 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1160 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1161 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1162 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1163 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1164 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1165 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1166 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1167 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1168 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1169 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1170 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1171 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1172 1173 /* ----- Extended LMP capabilities ----- */ 1174 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER) 1175 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE) 1176 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1177 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1178 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1179 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1180 1181 /* ----- Host capabilities ----- */ 1182 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1183 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1184 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1185 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1186 1187 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1188 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1189 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1190 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1191 1192 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1193 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1194 1195 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1196 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1197 1198 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1199 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1200 1201 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1202 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1203 ((dev)->commands[37] & 0x40)) 1204 /* Use ext create connection if command is supported */ 1205 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1206 1207 /* Extended advertising support */ 1208 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1209 1210 /* ----- HCI protocols ----- */ 1211 #define HCI_PROTO_DEFER 0x01 1212 1213 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1214 __u8 type, __u8 *flags) 1215 { 1216 switch (type) { 1217 case ACL_LINK: 1218 return l2cap_connect_ind(hdev, bdaddr); 1219 1220 case SCO_LINK: 1221 case ESCO_LINK: 1222 return sco_connect_ind(hdev, bdaddr, flags); 1223 1224 default: 1225 BT_ERR("unknown link type %d", type); 1226 return -EINVAL; 1227 } 1228 } 1229 1230 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1231 { 1232 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1233 return HCI_ERROR_REMOTE_USER_TERM; 1234 1235 return l2cap_disconn_ind(conn); 1236 } 1237 1238 /* ----- HCI callbacks ----- */ 1239 struct hci_cb { 1240 struct list_head list; 1241 1242 char *name; 1243 1244 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1245 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1246 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1247 __u8 encrypt); 1248 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1249 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1250 }; 1251 1252 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1253 { 1254 struct hci_cb *cb; 1255 1256 mutex_lock(&hci_cb_list_lock); 1257 list_for_each_entry(cb, &hci_cb_list, list) { 1258 if (cb->connect_cfm) 1259 cb->connect_cfm(conn, status); 1260 } 1261 mutex_unlock(&hci_cb_list_lock); 1262 1263 if (conn->connect_cfm_cb) 1264 conn->connect_cfm_cb(conn, status); 1265 } 1266 1267 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1268 { 1269 struct hci_cb *cb; 1270 1271 mutex_lock(&hci_cb_list_lock); 1272 list_for_each_entry(cb, &hci_cb_list, list) { 1273 if (cb->disconn_cfm) 1274 cb->disconn_cfm(conn, reason); 1275 } 1276 mutex_unlock(&hci_cb_list_lock); 1277 1278 if (conn->disconn_cfm_cb) 1279 conn->disconn_cfm_cb(conn, reason); 1280 } 1281 1282 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1283 { 1284 struct hci_cb *cb; 1285 __u8 encrypt; 1286 1287 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1288 return; 1289 1290 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1291 1292 mutex_lock(&hci_cb_list_lock); 1293 list_for_each_entry(cb, &hci_cb_list, list) { 1294 if (cb->security_cfm) 1295 cb->security_cfm(conn, status, encrypt); 1296 } 1297 mutex_unlock(&hci_cb_list_lock); 1298 1299 if (conn->security_cfm_cb) 1300 conn->security_cfm_cb(conn, status); 1301 } 1302 1303 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, 1304 __u8 encrypt) 1305 { 1306 struct hci_cb *cb; 1307 1308 if (conn->sec_level == BT_SECURITY_SDP) 1309 conn->sec_level = BT_SECURITY_LOW; 1310 1311 if (conn->pending_sec_level > conn->sec_level) 1312 conn->sec_level = conn->pending_sec_level; 1313 1314 mutex_lock(&hci_cb_list_lock); 1315 list_for_each_entry(cb, &hci_cb_list, list) { 1316 if (cb->security_cfm) 1317 cb->security_cfm(conn, status, encrypt); 1318 } 1319 mutex_unlock(&hci_cb_list_lock); 1320 1321 if (conn->security_cfm_cb) 1322 conn->security_cfm_cb(conn, status); 1323 } 1324 1325 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1326 { 1327 struct hci_cb *cb; 1328 1329 mutex_lock(&hci_cb_list_lock); 1330 list_for_each_entry(cb, &hci_cb_list, list) { 1331 if (cb->key_change_cfm) 1332 cb->key_change_cfm(conn, status); 1333 } 1334 mutex_unlock(&hci_cb_list_lock); 1335 } 1336 1337 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1338 __u8 role) 1339 { 1340 struct hci_cb *cb; 1341 1342 mutex_lock(&hci_cb_list_lock); 1343 list_for_each_entry(cb, &hci_cb_list, list) { 1344 if (cb->role_switch_cfm) 1345 cb->role_switch_cfm(conn, status, role); 1346 } 1347 mutex_unlock(&hci_cb_list_lock); 1348 } 1349 1350 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type, 1351 size_t *data_len) 1352 { 1353 size_t parsed = 0; 1354 1355 if (eir_len < 2) 1356 return NULL; 1357 1358 while (parsed < eir_len - 1) { 1359 u8 field_len = eir[0]; 1360 1361 if (field_len == 0) 1362 break; 1363 1364 parsed += field_len + 1; 1365 1366 if (parsed > eir_len) 1367 break; 1368 1369 if (eir[1] != type) { 1370 eir += field_len + 1; 1371 continue; 1372 } 1373 1374 /* Zero length data */ 1375 if (field_len == 1) 1376 return NULL; 1377 1378 if (data_len) 1379 *data_len = field_len - 1; 1380 1381 return &eir[2]; 1382 } 1383 1384 return NULL; 1385 } 1386 1387 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1388 { 1389 if (addr_type != ADDR_LE_DEV_RANDOM) 1390 return false; 1391 1392 if ((bdaddr->b[5] & 0xc0) == 0x40) 1393 return true; 1394 1395 return false; 1396 } 1397 1398 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1399 { 1400 if (addr_type == ADDR_LE_DEV_PUBLIC) 1401 return true; 1402 1403 /* Check for Random Static address type */ 1404 if ((addr->b[5] & 0xc0) == 0xc0) 1405 return true; 1406 1407 return false; 1408 } 1409 1410 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1411 bdaddr_t *bdaddr, u8 addr_type) 1412 { 1413 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1414 return NULL; 1415 1416 return hci_find_irk_by_rpa(hdev, bdaddr); 1417 } 1418 1419 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1420 u16 to_multiplier) 1421 { 1422 u16 max_latency; 1423 1424 if (min > max || min < 6 || max > 3200) 1425 return -EINVAL; 1426 1427 if (to_multiplier < 10 || to_multiplier > 3200) 1428 return -EINVAL; 1429 1430 if (max >= to_multiplier * 8) 1431 return -EINVAL; 1432 1433 max_latency = (to_multiplier * 4 / max) - 1; 1434 if (latency > 499 || latency > max_latency) 1435 return -EINVAL; 1436 1437 return 0; 1438 } 1439 1440 int hci_register_cb(struct hci_cb *hcb); 1441 int hci_unregister_cb(struct hci_cb *hcb); 1442 1443 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1444 const void *param, u32 timeout); 1445 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, 1446 const void *param, u8 event, u32 timeout); 1447 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 1448 const void *param); 1449 1450 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1451 const void *param); 1452 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1453 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1454 1455 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1456 1457 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1458 const void *param, u32 timeout); 1459 1460 /* ----- HCI Sockets ----- */ 1461 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 1462 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 1463 int flag, struct sock *skip_sk); 1464 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 1465 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 1466 void *data, u16 data_len, ktime_t tstamp, 1467 int flag, struct sock *skip_sk); 1468 1469 void hci_sock_dev_event(struct hci_dev *hdev, int event); 1470 1471 #define HCI_MGMT_VAR_LEN BIT(0) 1472 #define HCI_MGMT_NO_HDEV BIT(1) 1473 #define HCI_MGMT_UNTRUSTED BIT(2) 1474 #define HCI_MGMT_UNCONFIGURED BIT(3) 1475 1476 struct hci_mgmt_handler { 1477 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 1478 u16 data_len); 1479 size_t data_len; 1480 unsigned long flags; 1481 }; 1482 1483 struct hci_mgmt_chan { 1484 struct list_head list; 1485 unsigned short channel; 1486 size_t handler_count; 1487 const struct hci_mgmt_handler *handlers; 1488 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 1489 }; 1490 1491 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 1492 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 1493 1494 /* Management interface */ 1495 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 1496 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 1497 BIT(BDADDR_LE_RANDOM)) 1498 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 1499 BIT(BDADDR_LE_PUBLIC) | \ 1500 BIT(BDADDR_LE_RANDOM)) 1501 1502 /* These LE scan and inquiry parameters were chosen according to LE General 1503 * Discovery Procedure specification. 1504 */ 1505 #define DISCOV_LE_SCAN_WIN 0x12 1506 #define DISCOV_LE_SCAN_INT 0x12 1507 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 1508 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 1509 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 1510 #define DISCOV_BREDR_INQUIRY_LEN 0x08 1511 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 1512 1513 void mgmt_fill_version_info(void *ver); 1514 int mgmt_new_settings(struct hci_dev *hdev); 1515 void mgmt_index_added(struct hci_dev *hdev); 1516 void mgmt_index_removed(struct hci_dev *hdev); 1517 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 1518 void mgmt_power_on(struct hci_dev *hdev, int err); 1519 void __mgmt_power_off(struct hci_dev *hdev); 1520 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 1521 bool persistent); 1522 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 1523 u32 flags, u8 *name, u8 name_len); 1524 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 1525 u8 link_type, u8 addr_type, u8 reason, 1526 bool mgmt_connected); 1527 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 1528 u8 link_type, u8 addr_type, u8 status); 1529 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1530 u8 addr_type, u8 status); 1531 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 1532 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1533 u8 status); 1534 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1535 u8 status); 1536 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1537 u8 link_type, u8 addr_type, u32 value, 1538 u8 confirm_hint); 1539 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1540 u8 link_type, u8 addr_type, u8 status); 1541 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1542 u8 link_type, u8 addr_type, u8 status); 1543 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1544 u8 link_type, u8 addr_type); 1545 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1546 u8 link_type, u8 addr_type, u8 status); 1547 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1548 u8 link_type, u8 addr_type, u8 status); 1549 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 1550 u8 link_type, u8 addr_type, u32 passkey, 1551 u8 entered); 1552 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 1553 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 1554 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1555 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 1556 u8 status); 1557 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 1558 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 1559 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 1560 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1561 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 1562 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len); 1563 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1564 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 1565 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 1566 bool mgmt_powering_down(struct hci_dev *hdev); 1567 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 1568 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 1569 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 1570 bool persistent); 1571 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 1572 u8 bdaddr_type, u8 store_hint, u16 min_interval, 1573 u16 max_interval, u16 latency, u16 timeout); 1574 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 1575 bool mgmt_get_connectable(struct hci_dev *hdev); 1576 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status); 1577 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status); 1578 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 1579 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 1580 u8 instance); 1581 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 1582 u8 instance); 1583 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 1584 1585 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 1586 u16 to_multiplier); 1587 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 1588 __u8 ltk[16], __u8 key_size); 1589 1590 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 1591 u8 *bdaddr_type); 1592 1593 #define SCO_AIRMODE_MASK 0x0003 1594 #define SCO_AIRMODE_CVSD 0x0000 1595 #define SCO_AIRMODE_TRANSP 0x0003 1596 1597 #endif /* __HCI_CORE_H */ 1598