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 }; 441 442 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 443 444 struct hci_conn { 445 struct list_head list; 446 447 atomic_t refcnt; 448 449 bdaddr_t dst; 450 __u8 dst_type; 451 bdaddr_t src; 452 __u8 src_type; 453 bdaddr_t init_addr; 454 __u8 init_addr_type; 455 bdaddr_t resp_addr; 456 __u8 resp_addr_type; 457 __u16 handle; 458 __u16 state; 459 __u8 mode; 460 __u8 type; 461 __u8 role; 462 bool out; 463 __u8 attempt; 464 __u8 dev_class[3]; 465 __u8 features[HCI_MAX_PAGES][8]; 466 __u16 pkt_type; 467 __u16 link_policy; 468 __u8 key_type; 469 __u8 auth_type; 470 __u8 sec_level; 471 __u8 pending_sec_level; 472 __u8 pin_length; 473 __u8 enc_key_size; 474 __u8 io_capability; 475 __u32 passkey_notify; 476 __u8 passkey_entered; 477 __u16 disc_timeout; 478 __u16 conn_timeout; 479 __u16 setting; 480 __u16 le_conn_min_interval; 481 __u16 le_conn_max_interval; 482 __u16 le_conn_interval; 483 __u16 le_conn_latency; 484 __u16 le_supv_timeout; 485 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 486 __u8 le_adv_data_len; 487 __s8 rssi; 488 __s8 tx_power; 489 __s8 max_tx_power; 490 unsigned long flags; 491 492 __u32 clock; 493 __u16 clock_accuracy; 494 495 unsigned long conn_info_timestamp; 496 497 __u8 remote_cap; 498 __u8 remote_auth; 499 __u8 remote_id; 500 501 unsigned int sent; 502 503 struct sk_buff_head data_q; 504 struct list_head chan_list; 505 506 struct delayed_work disc_work; 507 struct delayed_work auto_accept_work; 508 struct delayed_work idle_work; 509 struct delayed_work le_conn_timeout; 510 struct work_struct le_scan_cleanup; 511 512 struct device dev; 513 struct dentry *debugfs; 514 515 struct hci_dev *hdev; 516 void *l2cap_data; 517 void *sco_data; 518 struct amp_mgr *amp_mgr; 519 520 struct hci_conn *link; 521 522 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 523 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 524 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 525 }; 526 527 struct hci_chan { 528 struct list_head list; 529 __u16 handle; 530 struct hci_conn *conn; 531 struct sk_buff_head data_q; 532 unsigned int sent; 533 __u8 state; 534 }; 535 536 struct hci_conn_params { 537 struct list_head list; 538 struct list_head action; 539 540 bdaddr_t addr; 541 u8 addr_type; 542 543 u16 conn_min_interval; 544 u16 conn_max_interval; 545 u16 conn_latency; 546 u16 supervision_timeout; 547 548 enum { 549 HCI_AUTO_CONN_DISABLED, 550 HCI_AUTO_CONN_REPORT, 551 HCI_AUTO_CONN_DIRECT, 552 HCI_AUTO_CONN_ALWAYS, 553 HCI_AUTO_CONN_LINK_LOSS, 554 HCI_AUTO_CONN_EXPLICIT, 555 } auto_connect; 556 557 struct hci_conn *conn; 558 bool explicit_connect; 559 }; 560 561 extern struct list_head hci_dev_list; 562 extern struct list_head hci_cb_list; 563 extern rwlock_t hci_dev_list_lock; 564 extern struct mutex hci_cb_list_lock; 565 566 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 567 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 568 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 569 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 570 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 571 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 572 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 573 574 #define hci_dev_clear_volatile_flags(hdev) \ 575 do { \ 576 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 577 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 578 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 579 } while (0) 580 581 /* ----- HCI interface to upper protocols ----- */ 582 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 583 int l2cap_disconn_ind(struct hci_conn *hcon); 584 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 585 586 #if IS_ENABLED(CONFIG_BT_BREDR) 587 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 588 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 589 #else 590 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 591 __u8 *flags) 592 { 593 return 0; 594 } 595 596 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 597 { 598 } 599 #endif 600 601 /* ----- Inquiry cache ----- */ 602 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 603 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 604 605 static inline void discovery_init(struct hci_dev *hdev) 606 { 607 hdev->discovery.state = DISCOVERY_STOPPED; 608 INIT_LIST_HEAD(&hdev->discovery.all); 609 INIT_LIST_HEAD(&hdev->discovery.unknown); 610 INIT_LIST_HEAD(&hdev->discovery.resolve); 611 hdev->discovery.report_invalid_rssi = true; 612 hdev->discovery.rssi = HCI_RSSI_INVALID; 613 } 614 615 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 616 { 617 hdev->discovery.result_filtering = false; 618 hdev->discovery.report_invalid_rssi = true; 619 hdev->discovery.rssi = HCI_RSSI_INVALID; 620 hdev->discovery.uuid_count = 0; 621 kfree(hdev->discovery.uuids); 622 hdev->discovery.uuids = NULL; 623 hdev->discovery.scan_start = 0; 624 hdev->discovery.scan_duration = 0; 625 } 626 627 bool hci_discovery_active(struct hci_dev *hdev); 628 629 void hci_discovery_set_state(struct hci_dev *hdev, int state); 630 631 static inline int inquiry_cache_empty(struct hci_dev *hdev) 632 { 633 return list_empty(&hdev->discovery.all); 634 } 635 636 static inline long inquiry_cache_age(struct hci_dev *hdev) 637 { 638 struct discovery_state *c = &hdev->discovery; 639 return jiffies - c->timestamp; 640 } 641 642 static inline long inquiry_entry_age(struct inquiry_entry *e) 643 { 644 return jiffies - e->timestamp; 645 } 646 647 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 648 bdaddr_t *bdaddr); 649 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 650 bdaddr_t *bdaddr); 651 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 652 bdaddr_t *bdaddr, 653 int state); 654 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 655 struct inquiry_entry *ie); 656 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 657 bool name_known); 658 void hci_inquiry_cache_flush(struct hci_dev *hdev); 659 660 /* ----- HCI Connections ----- */ 661 enum { 662 HCI_CONN_AUTH_PEND, 663 HCI_CONN_REAUTH_PEND, 664 HCI_CONN_ENCRYPT_PEND, 665 HCI_CONN_RSWITCH_PEND, 666 HCI_CONN_MODE_CHANGE_PEND, 667 HCI_CONN_SCO_SETUP_PEND, 668 HCI_CONN_MGMT_CONNECTED, 669 HCI_CONN_SSP_ENABLED, 670 HCI_CONN_SC_ENABLED, 671 HCI_CONN_AES_CCM, 672 HCI_CONN_POWER_SAVE, 673 HCI_CONN_FLUSH_KEY, 674 HCI_CONN_ENCRYPT, 675 HCI_CONN_AUTH, 676 HCI_CONN_SECURE, 677 HCI_CONN_FIPS, 678 HCI_CONN_STK_ENCRYPT, 679 HCI_CONN_AUTH_INITIATOR, 680 HCI_CONN_DROP, 681 HCI_CONN_PARAM_REMOVAL_PEND, 682 HCI_CONN_NEW_LINK_KEY, 683 HCI_CONN_SCANNING, 684 HCI_CONN_AUTH_FAILURE, 685 }; 686 687 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 688 { 689 struct hci_dev *hdev = conn->hdev; 690 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 691 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 692 } 693 694 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 695 { 696 struct hci_dev *hdev = conn->hdev; 697 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 698 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 699 } 700 701 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 702 { 703 struct hci_conn_hash *h = &hdev->conn_hash; 704 list_add_rcu(&c->list, &h->list); 705 switch (c->type) { 706 case ACL_LINK: 707 h->acl_num++; 708 break; 709 case AMP_LINK: 710 h->amp_num++; 711 break; 712 case LE_LINK: 713 h->le_num++; 714 if (c->role == HCI_ROLE_SLAVE) 715 h->le_num_slave++; 716 break; 717 case SCO_LINK: 718 case ESCO_LINK: 719 h->sco_num++; 720 break; 721 } 722 } 723 724 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 725 { 726 struct hci_conn_hash *h = &hdev->conn_hash; 727 728 list_del_rcu(&c->list); 729 synchronize_rcu(); 730 731 switch (c->type) { 732 case ACL_LINK: 733 h->acl_num--; 734 break; 735 case AMP_LINK: 736 h->amp_num--; 737 break; 738 case LE_LINK: 739 h->le_num--; 740 if (c->role == HCI_ROLE_SLAVE) 741 h->le_num_slave--; 742 break; 743 case SCO_LINK: 744 case ESCO_LINK: 745 h->sco_num--; 746 break; 747 } 748 } 749 750 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 751 { 752 struct hci_conn_hash *h = &hdev->conn_hash; 753 switch (type) { 754 case ACL_LINK: 755 return h->acl_num; 756 case AMP_LINK: 757 return h->amp_num; 758 case LE_LINK: 759 return h->le_num; 760 case SCO_LINK: 761 case ESCO_LINK: 762 return h->sco_num; 763 default: 764 return 0; 765 } 766 } 767 768 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 769 { 770 struct hci_conn_hash *c = &hdev->conn_hash; 771 772 return c->acl_num + c->amp_num + c->sco_num + c->le_num; 773 } 774 775 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 776 { 777 struct hci_conn_hash *h = &hdev->conn_hash; 778 struct hci_conn *c; 779 __u8 type = INVALID_LINK; 780 781 rcu_read_lock(); 782 783 list_for_each_entry_rcu(c, &h->list, list) { 784 if (c->handle == handle) { 785 type = c->type; 786 break; 787 } 788 } 789 790 rcu_read_unlock(); 791 792 return type; 793 } 794 795 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 796 __u16 handle) 797 { 798 struct hci_conn_hash *h = &hdev->conn_hash; 799 struct hci_conn *c; 800 801 rcu_read_lock(); 802 803 list_for_each_entry_rcu(c, &h->list, list) { 804 if (c->handle == handle) { 805 rcu_read_unlock(); 806 return c; 807 } 808 } 809 rcu_read_unlock(); 810 811 return NULL; 812 } 813 814 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 815 __u8 type, bdaddr_t *ba) 816 { 817 struct hci_conn_hash *h = &hdev->conn_hash; 818 struct hci_conn *c; 819 820 rcu_read_lock(); 821 822 list_for_each_entry_rcu(c, &h->list, list) { 823 if (c->type == type && !bacmp(&c->dst, ba)) { 824 rcu_read_unlock(); 825 return c; 826 } 827 } 828 829 rcu_read_unlock(); 830 831 return NULL; 832 } 833 834 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 835 bdaddr_t *ba, 836 __u8 ba_type) 837 { 838 struct hci_conn_hash *h = &hdev->conn_hash; 839 struct hci_conn *c; 840 841 rcu_read_lock(); 842 843 list_for_each_entry_rcu(c, &h->list, list) { 844 if (c->type != LE_LINK) 845 continue; 846 847 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 848 rcu_read_unlock(); 849 return c; 850 } 851 } 852 853 rcu_read_unlock(); 854 855 return NULL; 856 } 857 858 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 859 __u8 type, __u16 state) 860 { 861 struct hci_conn_hash *h = &hdev->conn_hash; 862 struct hci_conn *c; 863 864 rcu_read_lock(); 865 866 list_for_each_entry_rcu(c, &h->list, list) { 867 if (c->type == type && c->state == state) { 868 rcu_read_unlock(); 869 return c; 870 } 871 } 872 873 rcu_read_unlock(); 874 875 return NULL; 876 } 877 878 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 879 { 880 struct hci_conn_hash *h = &hdev->conn_hash; 881 struct hci_conn *c; 882 883 rcu_read_lock(); 884 885 list_for_each_entry_rcu(c, &h->list, list) { 886 if (c->type == LE_LINK && c->state == BT_CONNECT && 887 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 888 rcu_read_unlock(); 889 return c; 890 } 891 } 892 893 rcu_read_unlock(); 894 895 return NULL; 896 } 897 898 int hci_disconnect(struct hci_conn *conn, __u8 reason); 899 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 900 void hci_sco_setup(struct hci_conn *conn, __u8 status); 901 902 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 903 u8 role); 904 int hci_conn_del(struct hci_conn *conn); 905 void hci_conn_hash_flush(struct hci_dev *hdev); 906 void hci_conn_check_pending(struct hci_dev *hdev); 907 908 struct hci_chan *hci_chan_create(struct hci_conn *conn); 909 void hci_chan_del(struct hci_chan *chan); 910 void hci_chan_list_flush(struct hci_conn *conn); 911 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 912 913 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 914 u8 dst_type, u8 sec_level, 915 u16 conn_timeout); 916 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 917 u8 dst_type, u8 sec_level, u16 conn_timeout, 918 u8 role, bdaddr_t *direct_rpa); 919 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 920 u8 sec_level, u8 auth_type); 921 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 922 __u16 setting); 923 int hci_conn_check_link_mode(struct hci_conn *conn); 924 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 925 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 926 bool initiator); 927 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 928 929 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 930 931 void hci_le_conn_failed(struct hci_conn *conn, u8 status); 932 933 /* 934 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 935 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 936 * working or anything else. They just guarantee that the object is available 937 * and can be dereferenced. So you can use its locks, local variables and any 938 * other constant data. 939 * Before accessing runtime data, you _must_ lock the object and then check that 940 * it is still running. As soon as you release the locks, the connection might 941 * get dropped, though. 942 * 943 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 944 * how long the underlying connection is held. So every channel that runs on the 945 * hci_conn object calls this to prevent the connection from disappearing. As 946 * long as you hold a device, you must also guarantee that you have a valid 947 * reference to the device via hci_conn_get() (or the initial reference from 948 * hci_conn_add()). 949 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 950 * break because nobody cares for that. But this means, we cannot use 951 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 952 */ 953 954 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 955 { 956 get_device(&conn->dev); 957 return conn; 958 } 959 960 static inline void hci_conn_put(struct hci_conn *conn) 961 { 962 put_device(&conn->dev); 963 } 964 965 static inline void hci_conn_hold(struct hci_conn *conn) 966 { 967 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 968 969 atomic_inc(&conn->refcnt); 970 cancel_delayed_work(&conn->disc_work); 971 } 972 973 static inline void hci_conn_drop(struct hci_conn *conn) 974 { 975 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 976 977 if (atomic_dec_and_test(&conn->refcnt)) { 978 unsigned long timeo; 979 980 switch (conn->type) { 981 case ACL_LINK: 982 case LE_LINK: 983 cancel_delayed_work(&conn->idle_work); 984 if (conn->state == BT_CONNECTED) { 985 timeo = conn->disc_timeout; 986 if (!conn->out) 987 timeo *= 2; 988 } else { 989 timeo = 0; 990 } 991 break; 992 993 case AMP_LINK: 994 timeo = conn->disc_timeout; 995 break; 996 997 default: 998 timeo = 0; 999 break; 1000 } 1001 1002 cancel_delayed_work(&conn->disc_work); 1003 queue_delayed_work(conn->hdev->workqueue, 1004 &conn->disc_work, timeo); 1005 } 1006 } 1007 1008 /* ----- HCI Devices ----- */ 1009 static inline void hci_dev_put(struct hci_dev *d) 1010 { 1011 BT_DBG("%s orig refcnt %d", d->name, 1012 kref_read(&d->dev.kobj.kref)); 1013 1014 put_device(&d->dev); 1015 } 1016 1017 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1018 { 1019 BT_DBG("%s orig refcnt %d", d->name, 1020 kref_read(&d->dev.kobj.kref)); 1021 1022 get_device(&d->dev); 1023 return d; 1024 } 1025 1026 #define hci_dev_lock(d) mutex_lock(&d->lock) 1027 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1028 1029 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1030 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1031 1032 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1033 { 1034 return dev_get_drvdata(&hdev->dev); 1035 } 1036 1037 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1038 { 1039 dev_set_drvdata(&hdev->dev, data); 1040 } 1041 1042 struct hci_dev *hci_dev_get(int index); 1043 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1044 1045 struct hci_dev *hci_alloc_dev(void); 1046 void hci_free_dev(struct hci_dev *hdev); 1047 int hci_register_dev(struct hci_dev *hdev); 1048 void hci_unregister_dev(struct hci_dev *hdev); 1049 int hci_suspend_dev(struct hci_dev *hdev); 1050 int hci_resume_dev(struct hci_dev *hdev); 1051 int hci_reset_dev(struct hci_dev *hdev); 1052 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1053 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1054 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1055 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1056 int hci_dev_open(__u16 dev); 1057 int hci_dev_close(__u16 dev); 1058 int hci_dev_do_close(struct hci_dev *hdev); 1059 int hci_dev_reset(__u16 dev); 1060 int hci_dev_reset_stat(__u16 dev); 1061 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1062 int hci_get_dev_list(void __user *arg); 1063 int hci_get_dev_info(void __user *arg); 1064 int hci_get_conn_list(void __user *arg); 1065 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1066 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1067 int hci_inquiry(void __user *arg); 1068 1069 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1070 bdaddr_t *bdaddr, u8 type); 1071 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1072 struct list_head *list, bdaddr_t *bdaddr, 1073 u8 type); 1074 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1075 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1076 u8 type, u8 *peer_irk, u8 *local_irk); 1077 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1078 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1079 u8 type); 1080 void hci_bdaddr_list_clear(struct list_head *list); 1081 1082 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1083 bdaddr_t *addr, u8 addr_type); 1084 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1085 bdaddr_t *addr, u8 addr_type); 1086 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1087 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1088 1089 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1090 bdaddr_t *addr, 1091 u8 addr_type); 1092 1093 void hci_uuids_clear(struct hci_dev *hdev); 1094 1095 void hci_link_keys_clear(struct hci_dev *hdev); 1096 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1097 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1098 bdaddr_t *bdaddr, u8 *val, u8 type, 1099 u8 pin_len, bool *persistent); 1100 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1101 u8 addr_type, u8 type, u8 authenticated, 1102 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1103 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1104 u8 addr_type, u8 role); 1105 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1106 void hci_smp_ltks_clear(struct hci_dev *hdev); 1107 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1108 1109 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1110 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1111 u8 addr_type); 1112 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1113 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1114 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1115 void hci_smp_irks_clear(struct hci_dev *hdev); 1116 1117 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1118 1119 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1120 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1121 bdaddr_t *bdaddr, u8 bdaddr_type); 1122 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1123 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1124 u8 *hash256, u8 *rand256); 1125 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1126 u8 bdaddr_type); 1127 1128 void hci_adv_instances_clear(struct hci_dev *hdev); 1129 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1130 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1131 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, 1132 u16 adv_data_len, u8 *adv_data, 1133 u16 scan_rsp_len, u8 *scan_rsp_data, 1134 u16 timeout, u16 duration); 1135 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1136 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1137 1138 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1139 1140 void hci_init_sysfs(struct hci_dev *hdev); 1141 void hci_conn_init_sysfs(struct hci_conn *conn); 1142 void hci_conn_add_sysfs(struct hci_conn *conn); 1143 void hci_conn_del_sysfs(struct hci_conn *conn); 1144 1145 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1146 1147 /* ----- LMP capabilities ----- */ 1148 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1149 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1150 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1151 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1152 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1153 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1154 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1155 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1156 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1157 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1158 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1159 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1160 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1161 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1162 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1163 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1164 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1165 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1166 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1167 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1168 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1169 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1170 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1171 1172 /* ----- Extended LMP capabilities ----- */ 1173 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER) 1174 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE) 1175 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1176 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1177 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1178 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1179 1180 /* ----- Host capabilities ----- */ 1181 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1182 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1183 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1184 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1185 1186 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1187 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1188 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1189 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1190 1191 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1192 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1193 1194 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1195 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1196 1197 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1198 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1199 1200 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1201 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1202 ((dev)->commands[37] & 0x40)) 1203 /* Use ext create connection if command is supported */ 1204 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1205 1206 /* Extended advertising support */ 1207 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1208 1209 /* ----- HCI protocols ----- */ 1210 #define HCI_PROTO_DEFER 0x01 1211 1212 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1213 __u8 type, __u8 *flags) 1214 { 1215 switch (type) { 1216 case ACL_LINK: 1217 return l2cap_connect_ind(hdev, bdaddr); 1218 1219 case SCO_LINK: 1220 case ESCO_LINK: 1221 return sco_connect_ind(hdev, bdaddr, flags); 1222 1223 default: 1224 BT_ERR("unknown link type %d", type); 1225 return -EINVAL; 1226 } 1227 } 1228 1229 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1230 { 1231 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1232 return HCI_ERROR_REMOTE_USER_TERM; 1233 1234 return l2cap_disconn_ind(conn); 1235 } 1236 1237 /* ----- HCI callbacks ----- */ 1238 struct hci_cb { 1239 struct list_head list; 1240 1241 char *name; 1242 1243 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1244 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1245 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1246 __u8 encrypt); 1247 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1248 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1249 }; 1250 1251 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1252 { 1253 struct hci_cb *cb; 1254 1255 mutex_lock(&hci_cb_list_lock); 1256 list_for_each_entry(cb, &hci_cb_list, list) { 1257 if (cb->connect_cfm) 1258 cb->connect_cfm(conn, status); 1259 } 1260 mutex_unlock(&hci_cb_list_lock); 1261 1262 if (conn->connect_cfm_cb) 1263 conn->connect_cfm_cb(conn, status); 1264 } 1265 1266 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1267 { 1268 struct hci_cb *cb; 1269 1270 mutex_lock(&hci_cb_list_lock); 1271 list_for_each_entry(cb, &hci_cb_list, list) { 1272 if (cb->disconn_cfm) 1273 cb->disconn_cfm(conn, reason); 1274 } 1275 mutex_unlock(&hci_cb_list_lock); 1276 1277 if (conn->disconn_cfm_cb) 1278 conn->disconn_cfm_cb(conn, reason); 1279 } 1280 1281 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1282 { 1283 struct hci_cb *cb; 1284 __u8 encrypt; 1285 1286 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1287 return; 1288 1289 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1290 1291 mutex_lock(&hci_cb_list_lock); 1292 list_for_each_entry(cb, &hci_cb_list, list) { 1293 if (cb->security_cfm) 1294 cb->security_cfm(conn, status, encrypt); 1295 } 1296 mutex_unlock(&hci_cb_list_lock); 1297 1298 if (conn->security_cfm_cb) 1299 conn->security_cfm_cb(conn, status); 1300 } 1301 1302 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, 1303 __u8 encrypt) 1304 { 1305 struct hci_cb *cb; 1306 1307 if (conn->sec_level == BT_SECURITY_SDP) 1308 conn->sec_level = BT_SECURITY_LOW; 1309 1310 if (conn->pending_sec_level > conn->sec_level) 1311 conn->sec_level = conn->pending_sec_level; 1312 1313 mutex_lock(&hci_cb_list_lock); 1314 list_for_each_entry(cb, &hci_cb_list, list) { 1315 if (cb->security_cfm) 1316 cb->security_cfm(conn, status, encrypt); 1317 } 1318 mutex_unlock(&hci_cb_list_lock); 1319 1320 if (conn->security_cfm_cb) 1321 conn->security_cfm_cb(conn, status); 1322 } 1323 1324 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1325 { 1326 struct hci_cb *cb; 1327 1328 mutex_lock(&hci_cb_list_lock); 1329 list_for_each_entry(cb, &hci_cb_list, list) { 1330 if (cb->key_change_cfm) 1331 cb->key_change_cfm(conn, status); 1332 } 1333 mutex_unlock(&hci_cb_list_lock); 1334 } 1335 1336 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1337 __u8 role) 1338 { 1339 struct hci_cb *cb; 1340 1341 mutex_lock(&hci_cb_list_lock); 1342 list_for_each_entry(cb, &hci_cb_list, list) { 1343 if (cb->role_switch_cfm) 1344 cb->role_switch_cfm(conn, status, role); 1345 } 1346 mutex_unlock(&hci_cb_list_lock); 1347 } 1348 1349 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type, 1350 size_t *data_len) 1351 { 1352 size_t parsed = 0; 1353 1354 if (eir_len < 2) 1355 return NULL; 1356 1357 while (parsed < eir_len - 1) { 1358 u8 field_len = eir[0]; 1359 1360 if (field_len == 0) 1361 break; 1362 1363 parsed += field_len + 1; 1364 1365 if (parsed > eir_len) 1366 break; 1367 1368 if (eir[1] != type) { 1369 eir += field_len + 1; 1370 continue; 1371 } 1372 1373 /* Zero length data */ 1374 if (field_len == 1) 1375 return NULL; 1376 1377 if (data_len) 1378 *data_len = field_len - 1; 1379 1380 return &eir[2]; 1381 } 1382 1383 return NULL; 1384 } 1385 1386 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1387 { 1388 if (addr_type != ADDR_LE_DEV_RANDOM) 1389 return false; 1390 1391 if ((bdaddr->b[5] & 0xc0) == 0x40) 1392 return true; 1393 1394 return false; 1395 } 1396 1397 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1398 { 1399 if (addr_type == ADDR_LE_DEV_PUBLIC) 1400 return true; 1401 1402 /* Check for Random Static address type */ 1403 if ((addr->b[5] & 0xc0) == 0xc0) 1404 return true; 1405 1406 return false; 1407 } 1408 1409 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1410 bdaddr_t *bdaddr, u8 addr_type) 1411 { 1412 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1413 return NULL; 1414 1415 return hci_find_irk_by_rpa(hdev, bdaddr); 1416 } 1417 1418 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1419 u16 to_multiplier) 1420 { 1421 u16 max_latency; 1422 1423 if (min > max || min < 6 || max > 3200) 1424 return -EINVAL; 1425 1426 if (to_multiplier < 10 || to_multiplier > 3200) 1427 return -EINVAL; 1428 1429 if (max >= to_multiplier * 8) 1430 return -EINVAL; 1431 1432 max_latency = (to_multiplier * 4 / max) - 1; 1433 if (latency > 499 || latency > max_latency) 1434 return -EINVAL; 1435 1436 return 0; 1437 } 1438 1439 int hci_register_cb(struct hci_cb *hcb); 1440 int hci_unregister_cb(struct hci_cb *hcb); 1441 1442 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1443 const void *param, u32 timeout); 1444 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, 1445 const void *param, u8 event, u32 timeout); 1446 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 1447 const void *param); 1448 1449 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1450 const void *param); 1451 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1452 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1453 1454 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1455 1456 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1457 const void *param, u32 timeout); 1458 1459 /* ----- HCI Sockets ----- */ 1460 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 1461 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 1462 int flag, struct sock *skip_sk); 1463 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 1464 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 1465 void *data, u16 data_len, ktime_t tstamp, 1466 int flag, struct sock *skip_sk); 1467 1468 void hci_sock_dev_event(struct hci_dev *hdev, int event); 1469 1470 #define HCI_MGMT_VAR_LEN BIT(0) 1471 #define HCI_MGMT_NO_HDEV BIT(1) 1472 #define HCI_MGMT_UNTRUSTED BIT(2) 1473 #define HCI_MGMT_UNCONFIGURED BIT(3) 1474 1475 struct hci_mgmt_handler { 1476 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 1477 u16 data_len); 1478 size_t data_len; 1479 unsigned long flags; 1480 }; 1481 1482 struct hci_mgmt_chan { 1483 struct list_head list; 1484 unsigned short channel; 1485 size_t handler_count; 1486 const struct hci_mgmt_handler *handlers; 1487 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 1488 }; 1489 1490 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 1491 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 1492 1493 /* Management interface */ 1494 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 1495 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 1496 BIT(BDADDR_LE_RANDOM)) 1497 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 1498 BIT(BDADDR_LE_PUBLIC) | \ 1499 BIT(BDADDR_LE_RANDOM)) 1500 1501 /* These LE scan and inquiry parameters were chosen according to LE General 1502 * Discovery Procedure specification. 1503 */ 1504 #define DISCOV_LE_SCAN_WIN 0x12 1505 #define DISCOV_LE_SCAN_INT 0x12 1506 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 1507 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 1508 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 1509 #define DISCOV_BREDR_INQUIRY_LEN 0x08 1510 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 1511 1512 void mgmt_fill_version_info(void *ver); 1513 int mgmt_new_settings(struct hci_dev *hdev); 1514 void mgmt_index_added(struct hci_dev *hdev); 1515 void mgmt_index_removed(struct hci_dev *hdev); 1516 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 1517 void mgmt_power_on(struct hci_dev *hdev, int err); 1518 void __mgmt_power_off(struct hci_dev *hdev); 1519 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 1520 bool persistent); 1521 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 1522 u32 flags, u8 *name, u8 name_len); 1523 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 1524 u8 link_type, u8 addr_type, u8 reason, 1525 bool mgmt_connected); 1526 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 1527 u8 link_type, u8 addr_type, u8 status); 1528 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1529 u8 addr_type, u8 status); 1530 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 1531 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1532 u8 status); 1533 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1534 u8 status); 1535 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1536 u8 link_type, u8 addr_type, u32 value, 1537 u8 confirm_hint); 1538 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1539 u8 link_type, u8 addr_type, u8 status); 1540 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1541 u8 link_type, u8 addr_type, u8 status); 1542 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1543 u8 link_type, u8 addr_type); 1544 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1545 u8 link_type, u8 addr_type, u8 status); 1546 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1547 u8 link_type, u8 addr_type, u8 status); 1548 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 1549 u8 link_type, u8 addr_type, u32 passkey, 1550 u8 entered); 1551 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 1552 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 1553 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1554 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 1555 u8 status); 1556 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 1557 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 1558 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 1559 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1560 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 1561 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len); 1562 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1563 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 1564 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 1565 bool mgmt_powering_down(struct hci_dev *hdev); 1566 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 1567 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 1568 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 1569 bool persistent); 1570 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 1571 u8 bdaddr_type, u8 store_hint, u16 min_interval, 1572 u16 max_interval, u16 latency, u16 timeout); 1573 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 1574 bool mgmt_get_connectable(struct hci_dev *hdev); 1575 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status); 1576 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status); 1577 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 1578 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 1579 u8 instance); 1580 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 1581 u8 instance); 1582 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 1583 1584 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 1585 u16 to_multiplier); 1586 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 1587 __u8 ltk[16], __u8 key_size); 1588 1589 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 1590 u8 *bdaddr_type); 1591 1592 #define SCO_AIRMODE_MASK 0x0003 1593 #define SCO_AIRMODE_CVSD 0x0000 1594 #define SCO_AIRMODE_TRANSP 0x0003 1595 1596 #endif /* __HCI_CORE_H */ 1597