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 /* Min encryption key size to match with SMP */ 194 #define HCI_MIN_ENC_KEY_SIZE 7 195 196 /* Default LE RPA expiry time, 15 minutes */ 197 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 198 199 /* Default min/max age of connection information (1s/3s) */ 200 #define DEFAULT_CONN_INFO_MIN_AGE 1000 201 #define DEFAULT_CONN_INFO_MAX_AGE 3000 202 /* Default authenticated payload timeout 30s */ 203 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8 204 205 struct amp_assoc { 206 __u16 len; 207 __u16 offset; 208 __u16 rem_len; 209 __u16 len_so_far; 210 __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; 211 }; 212 213 #define HCI_MAX_PAGES 3 214 215 struct hci_dev { 216 struct list_head list; 217 struct mutex lock; 218 219 char name[8]; 220 unsigned long flags; 221 __u16 id; 222 __u8 bus; 223 __u8 dev_type; 224 bdaddr_t bdaddr; 225 bdaddr_t setup_addr; 226 bdaddr_t public_addr; 227 bdaddr_t random_addr; 228 bdaddr_t static_addr; 229 __u8 adv_addr_type; 230 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 231 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 232 __u8 eir[HCI_MAX_EIR_LENGTH]; 233 __u16 appearance; 234 __u8 dev_class[3]; 235 __u8 major_class; 236 __u8 minor_class; 237 __u8 max_page; 238 __u8 features[HCI_MAX_PAGES][8]; 239 __u8 le_features[8]; 240 __u8 le_white_list_size; 241 __u8 le_resolv_list_size; 242 __u8 le_num_of_adv_sets; 243 __u8 le_states[8]; 244 __u8 commands[64]; 245 __u8 hci_ver; 246 __u16 hci_rev; 247 __u8 lmp_ver; 248 __u16 manufacturer; 249 __u16 lmp_subver; 250 __u16 voice_setting; 251 __u8 num_iac; 252 __u8 stored_max_keys; 253 __u8 stored_num_keys; 254 __u8 io_capability; 255 __s8 inq_tx_power; 256 __u16 page_scan_interval; 257 __u16 page_scan_window; 258 __u8 page_scan_type; 259 __u8 le_adv_channel_map; 260 __u16 le_adv_min_interval; 261 __u16 le_adv_max_interval; 262 __u8 le_scan_type; 263 __u16 le_scan_interval; 264 __u16 le_scan_window; 265 __u16 le_conn_min_interval; 266 __u16 le_conn_max_interval; 267 __u16 le_conn_latency; 268 __u16 le_supv_timeout; 269 __u16 le_def_tx_len; 270 __u16 le_def_tx_time; 271 __u16 le_max_tx_len; 272 __u16 le_max_tx_time; 273 __u16 le_max_rx_len; 274 __u16 le_max_rx_time; 275 __u8 le_max_key_size; 276 __u8 le_min_key_size; 277 __u16 discov_interleaved_timeout; 278 __u16 conn_info_min_age; 279 __u16 conn_info_max_age; 280 __u16 auth_payload_timeout; 281 __u8 ssp_debug_mode; 282 __u8 hw_error_code; 283 __u32 clock; 284 285 __u16 devid_source; 286 __u16 devid_vendor; 287 __u16 devid_product; 288 __u16 devid_version; 289 290 __u16 pkt_type; 291 __u16 esco_type; 292 __u16 link_policy; 293 __u16 link_mode; 294 295 __u32 idle_timeout; 296 __u16 sniff_min_interval; 297 __u16 sniff_max_interval; 298 299 __u8 amp_status; 300 __u32 amp_total_bw; 301 __u32 amp_max_bw; 302 __u32 amp_min_latency; 303 __u32 amp_max_pdu; 304 __u8 amp_type; 305 __u16 amp_pal_cap; 306 __u16 amp_assoc_size; 307 __u32 amp_max_flush_to; 308 __u32 amp_be_flush_to; 309 310 struct amp_assoc loc_assoc; 311 312 __u8 flow_ctl_mode; 313 314 unsigned int auto_accept_delay; 315 316 unsigned long quirks; 317 318 atomic_t cmd_cnt; 319 unsigned int acl_cnt; 320 unsigned int sco_cnt; 321 unsigned int le_cnt; 322 323 unsigned int acl_mtu; 324 unsigned int sco_mtu; 325 unsigned int le_mtu; 326 unsigned int acl_pkts; 327 unsigned int sco_pkts; 328 unsigned int le_pkts; 329 330 __u16 block_len; 331 __u16 block_mtu; 332 __u16 num_blocks; 333 __u16 block_cnt; 334 335 unsigned long acl_last_tx; 336 unsigned long sco_last_tx; 337 unsigned long le_last_tx; 338 339 __u8 le_tx_def_phys; 340 __u8 le_rx_def_phys; 341 342 struct workqueue_struct *workqueue; 343 struct workqueue_struct *req_workqueue; 344 345 struct work_struct power_on; 346 struct delayed_work power_off; 347 struct work_struct error_reset; 348 349 __u16 discov_timeout; 350 struct delayed_work discov_off; 351 352 struct delayed_work service_cache; 353 354 struct delayed_work cmd_timer; 355 356 struct work_struct rx_work; 357 struct work_struct cmd_work; 358 struct work_struct tx_work; 359 360 struct work_struct discov_update; 361 struct work_struct bg_scan_update; 362 struct work_struct scan_update; 363 struct work_struct connectable_update; 364 struct work_struct discoverable_update; 365 struct delayed_work le_scan_disable; 366 struct delayed_work le_scan_restart; 367 368 struct sk_buff_head rx_q; 369 struct sk_buff_head raw_q; 370 struct sk_buff_head cmd_q; 371 372 struct sk_buff *sent_cmd; 373 374 struct mutex req_lock; 375 wait_queue_head_t req_wait_q; 376 __u32 req_status; 377 __u32 req_result; 378 struct sk_buff *req_skb; 379 380 void *smp_data; 381 void *smp_bredr_data; 382 383 struct discovery_state discovery; 384 struct hci_conn_hash conn_hash; 385 386 struct list_head mgmt_pending; 387 struct list_head blacklist; 388 struct list_head whitelist; 389 struct list_head uuids; 390 struct list_head link_keys; 391 struct list_head long_term_keys; 392 struct list_head identity_resolving_keys; 393 struct list_head remote_oob_data; 394 struct list_head le_white_list; 395 struct list_head le_resolv_list; 396 struct list_head le_conn_params; 397 struct list_head pend_le_conns; 398 struct list_head pend_le_reports; 399 400 struct hci_dev_stats stat; 401 402 atomic_t promisc; 403 404 const char *hw_info; 405 const char *fw_info; 406 struct dentry *debugfs; 407 408 struct device dev; 409 410 struct rfkill *rfkill; 411 412 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 413 414 __s8 adv_tx_power; 415 __u8 adv_data[HCI_MAX_AD_LENGTH]; 416 __u8 adv_data_len; 417 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; 418 __u8 scan_rsp_data_len; 419 420 struct list_head adv_instances; 421 unsigned int adv_instance_cnt; 422 __u8 cur_adv_instance; 423 __u16 adv_instance_timeout; 424 struct delayed_work adv_instance_expire; 425 426 __u8 irk[16]; 427 __u32 rpa_timeout; 428 struct delayed_work rpa_expired; 429 bdaddr_t rpa; 430 431 #if IS_ENABLED(CONFIG_BT_LEDS) 432 struct led_trigger *power_led; 433 #endif 434 435 int (*open)(struct hci_dev *hdev); 436 int (*close)(struct hci_dev *hdev); 437 int (*flush)(struct hci_dev *hdev); 438 int (*setup)(struct hci_dev *hdev); 439 int (*shutdown)(struct hci_dev *hdev); 440 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 441 void (*notify)(struct hci_dev *hdev, unsigned int evt); 442 void (*hw_error)(struct hci_dev *hdev, u8 code); 443 int (*post_init)(struct hci_dev *hdev); 444 int (*set_diag)(struct hci_dev *hdev, bool enable); 445 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 446 void (*cmd_timeout)(struct hci_dev *hdev); 447 }; 448 449 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 450 451 struct hci_conn { 452 struct list_head list; 453 454 atomic_t refcnt; 455 456 bdaddr_t dst; 457 __u8 dst_type; 458 bdaddr_t src; 459 __u8 src_type; 460 bdaddr_t init_addr; 461 __u8 init_addr_type; 462 bdaddr_t resp_addr; 463 __u8 resp_addr_type; 464 __u16 handle; 465 __u16 state; 466 __u8 mode; 467 __u8 type; 468 __u8 role; 469 bool out; 470 __u8 attempt; 471 __u8 dev_class[3]; 472 __u8 features[HCI_MAX_PAGES][8]; 473 __u16 pkt_type; 474 __u16 link_policy; 475 __u8 key_type; 476 __u8 auth_type; 477 __u8 sec_level; 478 __u8 pending_sec_level; 479 __u8 pin_length; 480 __u8 enc_key_size; 481 __u8 io_capability; 482 __u32 passkey_notify; 483 __u8 passkey_entered; 484 __u16 disc_timeout; 485 __u16 conn_timeout; 486 __u16 setting; 487 __u16 auth_payload_timeout; 488 __u16 le_conn_min_interval; 489 __u16 le_conn_max_interval; 490 __u16 le_conn_interval; 491 __u16 le_conn_latency; 492 __u16 le_supv_timeout; 493 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 494 __u8 le_adv_data_len; 495 __s8 rssi; 496 __s8 tx_power; 497 __s8 max_tx_power; 498 unsigned long flags; 499 500 __u32 clock; 501 __u16 clock_accuracy; 502 503 unsigned long conn_info_timestamp; 504 505 __u8 remote_cap; 506 __u8 remote_auth; 507 __u8 remote_id; 508 509 unsigned int sent; 510 511 struct sk_buff_head data_q; 512 struct list_head chan_list; 513 514 struct delayed_work disc_work; 515 struct delayed_work auto_accept_work; 516 struct delayed_work idle_work; 517 struct delayed_work le_conn_timeout; 518 struct work_struct le_scan_cleanup; 519 520 struct device dev; 521 struct dentry *debugfs; 522 523 struct hci_dev *hdev; 524 void *l2cap_data; 525 void *sco_data; 526 struct amp_mgr *amp_mgr; 527 528 struct hci_conn *link; 529 530 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 531 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 532 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 533 }; 534 535 struct hci_chan { 536 struct list_head list; 537 __u16 handle; 538 struct hci_conn *conn; 539 struct sk_buff_head data_q; 540 unsigned int sent; 541 __u8 state; 542 }; 543 544 struct hci_conn_params { 545 struct list_head list; 546 struct list_head action; 547 548 bdaddr_t addr; 549 u8 addr_type; 550 551 u16 conn_min_interval; 552 u16 conn_max_interval; 553 u16 conn_latency; 554 u16 supervision_timeout; 555 556 enum { 557 HCI_AUTO_CONN_DISABLED, 558 HCI_AUTO_CONN_REPORT, 559 HCI_AUTO_CONN_DIRECT, 560 HCI_AUTO_CONN_ALWAYS, 561 HCI_AUTO_CONN_LINK_LOSS, 562 HCI_AUTO_CONN_EXPLICIT, 563 } auto_connect; 564 565 struct hci_conn *conn; 566 bool explicit_connect; 567 }; 568 569 extern struct list_head hci_dev_list; 570 extern struct list_head hci_cb_list; 571 extern rwlock_t hci_dev_list_lock; 572 extern struct mutex hci_cb_list_lock; 573 574 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 575 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 576 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 577 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 578 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 579 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 580 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 581 582 #define hci_dev_clear_volatile_flags(hdev) \ 583 do { \ 584 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 585 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 586 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 587 } while (0) 588 589 /* ----- HCI interface to upper protocols ----- */ 590 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 591 int l2cap_disconn_ind(struct hci_conn *hcon); 592 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 593 594 #if IS_ENABLED(CONFIG_BT_BREDR) 595 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 596 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 597 #else 598 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 599 __u8 *flags) 600 { 601 return 0; 602 } 603 604 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 605 { 606 } 607 #endif 608 609 /* ----- Inquiry cache ----- */ 610 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 611 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 612 613 static inline void discovery_init(struct hci_dev *hdev) 614 { 615 hdev->discovery.state = DISCOVERY_STOPPED; 616 INIT_LIST_HEAD(&hdev->discovery.all); 617 INIT_LIST_HEAD(&hdev->discovery.unknown); 618 INIT_LIST_HEAD(&hdev->discovery.resolve); 619 hdev->discovery.report_invalid_rssi = true; 620 hdev->discovery.rssi = HCI_RSSI_INVALID; 621 } 622 623 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 624 { 625 hdev->discovery.result_filtering = false; 626 hdev->discovery.report_invalid_rssi = true; 627 hdev->discovery.rssi = HCI_RSSI_INVALID; 628 hdev->discovery.uuid_count = 0; 629 kfree(hdev->discovery.uuids); 630 hdev->discovery.uuids = NULL; 631 hdev->discovery.scan_start = 0; 632 hdev->discovery.scan_duration = 0; 633 } 634 635 bool hci_discovery_active(struct hci_dev *hdev); 636 637 void hci_discovery_set_state(struct hci_dev *hdev, int state); 638 639 static inline int inquiry_cache_empty(struct hci_dev *hdev) 640 { 641 return list_empty(&hdev->discovery.all); 642 } 643 644 static inline long inquiry_cache_age(struct hci_dev *hdev) 645 { 646 struct discovery_state *c = &hdev->discovery; 647 return jiffies - c->timestamp; 648 } 649 650 static inline long inquiry_entry_age(struct inquiry_entry *e) 651 { 652 return jiffies - e->timestamp; 653 } 654 655 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 656 bdaddr_t *bdaddr); 657 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 658 bdaddr_t *bdaddr); 659 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 660 bdaddr_t *bdaddr, 661 int state); 662 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 663 struct inquiry_entry *ie); 664 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 665 bool name_known); 666 void hci_inquiry_cache_flush(struct hci_dev *hdev); 667 668 /* ----- HCI Connections ----- */ 669 enum { 670 HCI_CONN_AUTH_PEND, 671 HCI_CONN_REAUTH_PEND, 672 HCI_CONN_ENCRYPT_PEND, 673 HCI_CONN_RSWITCH_PEND, 674 HCI_CONN_MODE_CHANGE_PEND, 675 HCI_CONN_SCO_SETUP_PEND, 676 HCI_CONN_MGMT_CONNECTED, 677 HCI_CONN_SSP_ENABLED, 678 HCI_CONN_SC_ENABLED, 679 HCI_CONN_AES_CCM, 680 HCI_CONN_POWER_SAVE, 681 HCI_CONN_FLUSH_KEY, 682 HCI_CONN_ENCRYPT, 683 HCI_CONN_AUTH, 684 HCI_CONN_SECURE, 685 HCI_CONN_FIPS, 686 HCI_CONN_STK_ENCRYPT, 687 HCI_CONN_AUTH_INITIATOR, 688 HCI_CONN_DROP, 689 HCI_CONN_PARAM_REMOVAL_PEND, 690 HCI_CONN_NEW_LINK_KEY, 691 HCI_CONN_SCANNING, 692 HCI_CONN_AUTH_FAILURE, 693 }; 694 695 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 696 { 697 struct hci_dev *hdev = conn->hdev; 698 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 699 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 700 } 701 702 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 703 { 704 struct hci_dev *hdev = conn->hdev; 705 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 706 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 707 } 708 709 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 710 { 711 struct hci_conn_hash *h = &hdev->conn_hash; 712 list_add_rcu(&c->list, &h->list); 713 switch (c->type) { 714 case ACL_LINK: 715 h->acl_num++; 716 break; 717 case AMP_LINK: 718 h->amp_num++; 719 break; 720 case LE_LINK: 721 h->le_num++; 722 if (c->role == HCI_ROLE_SLAVE) 723 h->le_num_slave++; 724 break; 725 case SCO_LINK: 726 case ESCO_LINK: 727 h->sco_num++; 728 break; 729 } 730 } 731 732 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 733 { 734 struct hci_conn_hash *h = &hdev->conn_hash; 735 736 list_del_rcu(&c->list); 737 synchronize_rcu(); 738 739 switch (c->type) { 740 case ACL_LINK: 741 h->acl_num--; 742 break; 743 case AMP_LINK: 744 h->amp_num--; 745 break; 746 case LE_LINK: 747 h->le_num--; 748 if (c->role == HCI_ROLE_SLAVE) 749 h->le_num_slave--; 750 break; 751 case SCO_LINK: 752 case ESCO_LINK: 753 h->sco_num--; 754 break; 755 } 756 } 757 758 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 759 { 760 struct hci_conn_hash *h = &hdev->conn_hash; 761 switch (type) { 762 case ACL_LINK: 763 return h->acl_num; 764 case AMP_LINK: 765 return h->amp_num; 766 case LE_LINK: 767 return h->le_num; 768 case SCO_LINK: 769 case ESCO_LINK: 770 return h->sco_num; 771 default: 772 return 0; 773 } 774 } 775 776 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 777 { 778 struct hci_conn_hash *c = &hdev->conn_hash; 779 780 return c->acl_num + c->amp_num + c->sco_num + c->le_num; 781 } 782 783 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 784 { 785 struct hci_conn_hash *h = &hdev->conn_hash; 786 struct hci_conn *c; 787 __u8 type = INVALID_LINK; 788 789 rcu_read_lock(); 790 791 list_for_each_entry_rcu(c, &h->list, list) { 792 if (c->handle == handle) { 793 type = c->type; 794 break; 795 } 796 } 797 798 rcu_read_unlock(); 799 800 return type; 801 } 802 803 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 804 __u16 handle) 805 { 806 struct hci_conn_hash *h = &hdev->conn_hash; 807 struct hci_conn *c; 808 809 rcu_read_lock(); 810 811 list_for_each_entry_rcu(c, &h->list, list) { 812 if (c->handle == handle) { 813 rcu_read_unlock(); 814 return c; 815 } 816 } 817 rcu_read_unlock(); 818 819 return NULL; 820 } 821 822 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 823 __u8 type, bdaddr_t *ba) 824 { 825 struct hci_conn_hash *h = &hdev->conn_hash; 826 struct hci_conn *c; 827 828 rcu_read_lock(); 829 830 list_for_each_entry_rcu(c, &h->list, list) { 831 if (c->type == type && !bacmp(&c->dst, ba)) { 832 rcu_read_unlock(); 833 return c; 834 } 835 } 836 837 rcu_read_unlock(); 838 839 return NULL; 840 } 841 842 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 843 bdaddr_t *ba, 844 __u8 ba_type) 845 { 846 struct hci_conn_hash *h = &hdev->conn_hash; 847 struct hci_conn *c; 848 849 rcu_read_lock(); 850 851 list_for_each_entry_rcu(c, &h->list, list) { 852 if (c->type != LE_LINK) 853 continue; 854 855 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 856 rcu_read_unlock(); 857 return c; 858 } 859 } 860 861 rcu_read_unlock(); 862 863 return NULL; 864 } 865 866 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 867 __u8 type, __u16 state) 868 { 869 struct hci_conn_hash *h = &hdev->conn_hash; 870 struct hci_conn *c; 871 872 rcu_read_lock(); 873 874 list_for_each_entry_rcu(c, &h->list, list) { 875 if (c->type == type && c->state == state) { 876 rcu_read_unlock(); 877 return c; 878 } 879 } 880 881 rcu_read_unlock(); 882 883 return NULL; 884 } 885 886 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 887 { 888 struct hci_conn_hash *h = &hdev->conn_hash; 889 struct hci_conn *c; 890 891 rcu_read_lock(); 892 893 list_for_each_entry_rcu(c, &h->list, list) { 894 if (c->type == LE_LINK && c->state == BT_CONNECT && 895 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 896 rcu_read_unlock(); 897 return c; 898 } 899 } 900 901 rcu_read_unlock(); 902 903 return NULL; 904 } 905 906 int hci_disconnect(struct hci_conn *conn, __u8 reason); 907 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 908 void hci_sco_setup(struct hci_conn *conn, __u8 status); 909 910 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 911 u8 role); 912 int hci_conn_del(struct hci_conn *conn); 913 void hci_conn_hash_flush(struct hci_dev *hdev); 914 void hci_conn_check_pending(struct hci_dev *hdev); 915 916 struct hci_chan *hci_chan_create(struct hci_conn *conn); 917 void hci_chan_del(struct hci_chan *chan); 918 void hci_chan_list_flush(struct hci_conn *conn); 919 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 920 921 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 922 u8 dst_type, u8 sec_level, 923 u16 conn_timeout); 924 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 925 u8 dst_type, u8 sec_level, u16 conn_timeout, 926 u8 role, bdaddr_t *direct_rpa); 927 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 928 u8 sec_level, u8 auth_type); 929 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 930 __u16 setting); 931 int hci_conn_check_link_mode(struct hci_conn *conn); 932 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 933 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 934 bool initiator); 935 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 936 937 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 938 939 void hci_le_conn_failed(struct hci_conn *conn, u8 status); 940 941 /* 942 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 943 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 944 * working or anything else. They just guarantee that the object is available 945 * and can be dereferenced. So you can use its locks, local variables and any 946 * other constant data. 947 * Before accessing runtime data, you _must_ lock the object and then check that 948 * it is still running. As soon as you release the locks, the connection might 949 * get dropped, though. 950 * 951 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 952 * how long the underlying connection is held. So every channel that runs on the 953 * hci_conn object calls this to prevent the connection from disappearing. As 954 * long as you hold a device, you must also guarantee that you have a valid 955 * reference to the device via hci_conn_get() (or the initial reference from 956 * hci_conn_add()). 957 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 958 * break because nobody cares for that. But this means, we cannot use 959 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 960 */ 961 962 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 963 { 964 get_device(&conn->dev); 965 return conn; 966 } 967 968 static inline void hci_conn_put(struct hci_conn *conn) 969 { 970 put_device(&conn->dev); 971 } 972 973 static inline void hci_conn_hold(struct hci_conn *conn) 974 { 975 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 976 977 atomic_inc(&conn->refcnt); 978 cancel_delayed_work(&conn->disc_work); 979 } 980 981 static inline void hci_conn_drop(struct hci_conn *conn) 982 { 983 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 984 985 if (atomic_dec_and_test(&conn->refcnt)) { 986 unsigned long timeo; 987 988 switch (conn->type) { 989 case ACL_LINK: 990 case LE_LINK: 991 cancel_delayed_work(&conn->idle_work); 992 if (conn->state == BT_CONNECTED) { 993 timeo = conn->disc_timeout; 994 if (!conn->out) 995 timeo *= 2; 996 } else { 997 timeo = 0; 998 } 999 break; 1000 1001 case AMP_LINK: 1002 timeo = conn->disc_timeout; 1003 break; 1004 1005 default: 1006 timeo = 0; 1007 break; 1008 } 1009 1010 cancel_delayed_work(&conn->disc_work); 1011 queue_delayed_work(conn->hdev->workqueue, 1012 &conn->disc_work, timeo); 1013 } 1014 } 1015 1016 /* ----- HCI Devices ----- */ 1017 static inline void hci_dev_put(struct hci_dev *d) 1018 { 1019 BT_DBG("%s orig refcnt %d", d->name, 1020 kref_read(&d->dev.kobj.kref)); 1021 1022 put_device(&d->dev); 1023 } 1024 1025 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1026 { 1027 BT_DBG("%s orig refcnt %d", d->name, 1028 kref_read(&d->dev.kobj.kref)); 1029 1030 get_device(&d->dev); 1031 return d; 1032 } 1033 1034 #define hci_dev_lock(d) mutex_lock(&d->lock) 1035 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1036 1037 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1038 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1039 1040 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1041 { 1042 return dev_get_drvdata(&hdev->dev); 1043 } 1044 1045 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1046 { 1047 dev_set_drvdata(&hdev->dev, data); 1048 } 1049 1050 struct hci_dev *hci_dev_get(int index); 1051 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1052 1053 struct hci_dev *hci_alloc_dev(void); 1054 void hci_free_dev(struct hci_dev *hdev); 1055 int hci_register_dev(struct hci_dev *hdev); 1056 void hci_unregister_dev(struct hci_dev *hdev); 1057 int hci_suspend_dev(struct hci_dev *hdev); 1058 int hci_resume_dev(struct hci_dev *hdev); 1059 int hci_reset_dev(struct hci_dev *hdev); 1060 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1061 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1062 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1063 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1064 int hci_dev_open(__u16 dev); 1065 int hci_dev_close(__u16 dev); 1066 int hci_dev_do_close(struct hci_dev *hdev); 1067 int hci_dev_reset(__u16 dev); 1068 int hci_dev_reset_stat(__u16 dev); 1069 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1070 int hci_get_dev_list(void __user *arg); 1071 int hci_get_dev_info(void __user *arg); 1072 int hci_get_conn_list(void __user *arg); 1073 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1074 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1075 int hci_inquiry(void __user *arg); 1076 1077 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1078 bdaddr_t *bdaddr, u8 type); 1079 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1080 struct list_head *list, bdaddr_t *bdaddr, 1081 u8 type); 1082 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1083 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1084 u8 type, u8 *peer_irk, u8 *local_irk); 1085 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1086 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1087 u8 type); 1088 void hci_bdaddr_list_clear(struct list_head *list); 1089 1090 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1091 bdaddr_t *addr, u8 addr_type); 1092 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1093 bdaddr_t *addr, u8 addr_type); 1094 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1095 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1096 1097 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1098 bdaddr_t *addr, 1099 u8 addr_type); 1100 1101 void hci_uuids_clear(struct hci_dev *hdev); 1102 1103 void hci_link_keys_clear(struct hci_dev *hdev); 1104 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1105 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1106 bdaddr_t *bdaddr, u8 *val, u8 type, 1107 u8 pin_len, bool *persistent); 1108 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1109 u8 addr_type, u8 type, u8 authenticated, 1110 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1111 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1112 u8 addr_type, u8 role); 1113 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1114 void hci_smp_ltks_clear(struct hci_dev *hdev); 1115 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1116 1117 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1118 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1119 u8 addr_type); 1120 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1121 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1122 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1123 void hci_smp_irks_clear(struct hci_dev *hdev); 1124 1125 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1126 1127 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1128 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1129 bdaddr_t *bdaddr, u8 bdaddr_type); 1130 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1131 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1132 u8 *hash256, u8 *rand256); 1133 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1134 u8 bdaddr_type); 1135 1136 void hci_adv_instances_clear(struct hci_dev *hdev); 1137 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1138 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1139 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, 1140 u16 adv_data_len, u8 *adv_data, 1141 u16 scan_rsp_len, u8 *scan_rsp_data, 1142 u16 timeout, u16 duration); 1143 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1144 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1145 1146 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1147 1148 void hci_init_sysfs(struct hci_dev *hdev); 1149 void hci_conn_init_sysfs(struct hci_conn *conn); 1150 void hci_conn_add_sysfs(struct hci_conn *conn); 1151 void hci_conn_del_sysfs(struct hci_conn *conn); 1152 1153 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1154 1155 /* ----- LMP capabilities ----- */ 1156 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1157 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1158 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1159 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1160 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1161 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1162 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1163 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1164 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1165 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1166 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1167 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1168 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1169 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1170 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1171 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1172 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1173 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1174 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1175 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1176 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1177 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1178 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1179 1180 /* ----- Extended LMP capabilities ----- */ 1181 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER) 1182 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE) 1183 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1184 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1185 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1186 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1187 1188 /* ----- Host capabilities ----- */ 1189 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1190 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1191 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1192 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1193 1194 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1195 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1196 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1197 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1198 1199 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1200 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1201 1202 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1203 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1204 1205 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1206 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1207 1208 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1209 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1210 ((dev)->commands[37] & 0x40)) 1211 /* Use ext create connection if command is supported */ 1212 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1213 1214 /* Extended advertising support */ 1215 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1216 1217 /* ----- HCI protocols ----- */ 1218 #define HCI_PROTO_DEFER 0x01 1219 1220 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1221 __u8 type, __u8 *flags) 1222 { 1223 switch (type) { 1224 case ACL_LINK: 1225 return l2cap_connect_ind(hdev, bdaddr); 1226 1227 case SCO_LINK: 1228 case ESCO_LINK: 1229 return sco_connect_ind(hdev, bdaddr, flags); 1230 1231 default: 1232 BT_ERR("unknown link type %d", type); 1233 return -EINVAL; 1234 } 1235 } 1236 1237 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1238 { 1239 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1240 return HCI_ERROR_REMOTE_USER_TERM; 1241 1242 return l2cap_disconn_ind(conn); 1243 } 1244 1245 /* ----- HCI callbacks ----- */ 1246 struct hci_cb { 1247 struct list_head list; 1248 1249 char *name; 1250 1251 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1252 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1253 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1254 __u8 encrypt); 1255 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1256 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1257 }; 1258 1259 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1260 { 1261 struct hci_cb *cb; 1262 1263 mutex_lock(&hci_cb_list_lock); 1264 list_for_each_entry(cb, &hci_cb_list, list) { 1265 if (cb->connect_cfm) 1266 cb->connect_cfm(conn, status); 1267 } 1268 mutex_unlock(&hci_cb_list_lock); 1269 1270 if (conn->connect_cfm_cb) 1271 conn->connect_cfm_cb(conn, status); 1272 } 1273 1274 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1275 { 1276 struct hci_cb *cb; 1277 1278 mutex_lock(&hci_cb_list_lock); 1279 list_for_each_entry(cb, &hci_cb_list, list) { 1280 if (cb->disconn_cfm) 1281 cb->disconn_cfm(conn, reason); 1282 } 1283 mutex_unlock(&hci_cb_list_lock); 1284 1285 if (conn->disconn_cfm_cb) 1286 conn->disconn_cfm_cb(conn, reason); 1287 } 1288 1289 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1290 { 1291 struct hci_cb *cb; 1292 __u8 encrypt; 1293 1294 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1295 return; 1296 1297 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1298 1299 mutex_lock(&hci_cb_list_lock); 1300 list_for_each_entry(cb, &hci_cb_list, list) { 1301 if (cb->security_cfm) 1302 cb->security_cfm(conn, status, encrypt); 1303 } 1304 mutex_unlock(&hci_cb_list_lock); 1305 1306 if (conn->security_cfm_cb) 1307 conn->security_cfm_cb(conn, status); 1308 } 1309 1310 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, 1311 __u8 encrypt) 1312 { 1313 struct hci_cb *cb; 1314 1315 if (conn->sec_level == BT_SECURITY_SDP) 1316 conn->sec_level = BT_SECURITY_LOW; 1317 1318 if (conn->pending_sec_level > conn->sec_level) 1319 conn->sec_level = conn->pending_sec_level; 1320 1321 mutex_lock(&hci_cb_list_lock); 1322 list_for_each_entry(cb, &hci_cb_list, list) { 1323 if (cb->security_cfm) 1324 cb->security_cfm(conn, status, encrypt); 1325 } 1326 mutex_unlock(&hci_cb_list_lock); 1327 1328 if (conn->security_cfm_cb) 1329 conn->security_cfm_cb(conn, status); 1330 } 1331 1332 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1333 { 1334 struct hci_cb *cb; 1335 1336 mutex_lock(&hci_cb_list_lock); 1337 list_for_each_entry(cb, &hci_cb_list, list) { 1338 if (cb->key_change_cfm) 1339 cb->key_change_cfm(conn, status); 1340 } 1341 mutex_unlock(&hci_cb_list_lock); 1342 } 1343 1344 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1345 __u8 role) 1346 { 1347 struct hci_cb *cb; 1348 1349 mutex_lock(&hci_cb_list_lock); 1350 list_for_each_entry(cb, &hci_cb_list, list) { 1351 if (cb->role_switch_cfm) 1352 cb->role_switch_cfm(conn, status, role); 1353 } 1354 mutex_unlock(&hci_cb_list_lock); 1355 } 1356 1357 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type, 1358 size_t *data_len) 1359 { 1360 size_t parsed = 0; 1361 1362 if (eir_len < 2) 1363 return NULL; 1364 1365 while (parsed < eir_len - 1) { 1366 u8 field_len = eir[0]; 1367 1368 if (field_len == 0) 1369 break; 1370 1371 parsed += field_len + 1; 1372 1373 if (parsed > eir_len) 1374 break; 1375 1376 if (eir[1] != type) { 1377 eir += field_len + 1; 1378 continue; 1379 } 1380 1381 /* Zero length data */ 1382 if (field_len == 1) 1383 return NULL; 1384 1385 if (data_len) 1386 *data_len = field_len - 1; 1387 1388 return &eir[2]; 1389 } 1390 1391 return NULL; 1392 } 1393 1394 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1395 { 1396 if (addr_type != ADDR_LE_DEV_RANDOM) 1397 return false; 1398 1399 if ((bdaddr->b[5] & 0xc0) == 0x40) 1400 return true; 1401 1402 return false; 1403 } 1404 1405 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1406 { 1407 if (addr_type == ADDR_LE_DEV_PUBLIC) 1408 return true; 1409 1410 /* Check for Random Static address type */ 1411 if ((addr->b[5] & 0xc0) == 0xc0) 1412 return true; 1413 1414 return false; 1415 } 1416 1417 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1418 bdaddr_t *bdaddr, u8 addr_type) 1419 { 1420 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1421 return NULL; 1422 1423 return hci_find_irk_by_rpa(hdev, bdaddr); 1424 } 1425 1426 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1427 u16 to_multiplier) 1428 { 1429 u16 max_latency; 1430 1431 if (min > max || min < 6 || max > 3200) 1432 return -EINVAL; 1433 1434 if (to_multiplier < 10 || to_multiplier > 3200) 1435 return -EINVAL; 1436 1437 if (max >= to_multiplier * 8) 1438 return -EINVAL; 1439 1440 max_latency = (to_multiplier * 4 / max) - 1; 1441 if (latency > 499 || latency > max_latency) 1442 return -EINVAL; 1443 1444 return 0; 1445 } 1446 1447 int hci_register_cb(struct hci_cb *hcb); 1448 int hci_unregister_cb(struct hci_cb *hcb); 1449 1450 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1451 const void *param, u32 timeout); 1452 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, 1453 const void *param, u8 event, u32 timeout); 1454 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 1455 const void *param); 1456 1457 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1458 const void *param); 1459 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1460 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1461 1462 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1463 1464 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1465 const void *param, u32 timeout); 1466 1467 /* ----- HCI Sockets ----- */ 1468 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 1469 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 1470 int flag, struct sock *skip_sk); 1471 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 1472 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 1473 void *data, u16 data_len, ktime_t tstamp, 1474 int flag, struct sock *skip_sk); 1475 1476 void hci_sock_dev_event(struct hci_dev *hdev, int event); 1477 1478 #define HCI_MGMT_VAR_LEN BIT(0) 1479 #define HCI_MGMT_NO_HDEV BIT(1) 1480 #define HCI_MGMT_UNTRUSTED BIT(2) 1481 #define HCI_MGMT_UNCONFIGURED BIT(3) 1482 1483 struct hci_mgmt_handler { 1484 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 1485 u16 data_len); 1486 size_t data_len; 1487 unsigned long flags; 1488 }; 1489 1490 struct hci_mgmt_chan { 1491 struct list_head list; 1492 unsigned short channel; 1493 size_t handler_count; 1494 const struct hci_mgmt_handler *handlers; 1495 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 1496 }; 1497 1498 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 1499 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 1500 1501 /* Management interface */ 1502 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 1503 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 1504 BIT(BDADDR_LE_RANDOM)) 1505 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 1506 BIT(BDADDR_LE_PUBLIC) | \ 1507 BIT(BDADDR_LE_RANDOM)) 1508 1509 /* These LE scan and inquiry parameters were chosen according to LE General 1510 * Discovery Procedure specification. 1511 */ 1512 #define DISCOV_LE_SCAN_WIN 0x12 1513 #define DISCOV_LE_SCAN_INT 0x12 1514 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 1515 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 1516 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 1517 #define DISCOV_BREDR_INQUIRY_LEN 0x08 1518 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 1519 1520 void mgmt_fill_version_info(void *ver); 1521 int mgmt_new_settings(struct hci_dev *hdev); 1522 void mgmt_index_added(struct hci_dev *hdev); 1523 void mgmt_index_removed(struct hci_dev *hdev); 1524 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 1525 void mgmt_power_on(struct hci_dev *hdev, int err); 1526 void __mgmt_power_off(struct hci_dev *hdev); 1527 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 1528 bool persistent); 1529 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 1530 u32 flags, u8 *name, u8 name_len); 1531 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 1532 u8 link_type, u8 addr_type, u8 reason, 1533 bool mgmt_connected); 1534 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 1535 u8 link_type, u8 addr_type, u8 status); 1536 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1537 u8 addr_type, u8 status); 1538 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 1539 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1540 u8 status); 1541 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1542 u8 status); 1543 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1544 u8 link_type, u8 addr_type, u32 value, 1545 u8 confirm_hint); 1546 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1547 u8 link_type, u8 addr_type, u8 status); 1548 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1549 u8 link_type, u8 addr_type, u8 status); 1550 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1551 u8 link_type, u8 addr_type); 1552 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1553 u8 link_type, u8 addr_type, u8 status); 1554 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1555 u8 link_type, u8 addr_type, u8 status); 1556 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 1557 u8 link_type, u8 addr_type, u32 passkey, 1558 u8 entered); 1559 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 1560 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 1561 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1562 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 1563 u8 status); 1564 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 1565 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 1566 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 1567 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1568 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 1569 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len); 1570 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1571 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 1572 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 1573 bool mgmt_powering_down(struct hci_dev *hdev); 1574 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 1575 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 1576 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 1577 bool persistent); 1578 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 1579 u8 bdaddr_type, u8 store_hint, u16 min_interval, 1580 u16 max_interval, u16 latency, u16 timeout); 1581 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 1582 bool mgmt_get_connectable(struct hci_dev *hdev); 1583 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status); 1584 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status); 1585 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 1586 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 1587 u8 instance); 1588 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 1589 u8 instance); 1590 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 1591 1592 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 1593 u16 to_multiplier); 1594 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 1595 __u8 ltk[16], __u8 key_size); 1596 1597 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 1598 u8 *bdaddr_type); 1599 1600 #define SCO_AIRMODE_MASK 0x0003 1601 #define SCO_AIRMODE_CVSD 0x0000 1602 #define SCO_AIRMODE_TRANSP 0x0003 1603 1604 #endif /* __HCI_CORE_H */ 1605