1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 /** 39 * @title Host Controler Interface (HCI) 40 * 41 */ 42 43 #ifndef HCI_H 44 #define HCI_H 45 46 #include "btstack_config.h" 47 48 #include "btstack_chipset.h" 49 #include "btstack_control.h" 50 #include "btstack_linked_list.h" 51 #include "btstack_util.h" 52 #include "hci_cmd.h" 53 #include "gap.h" 54 #include "hci_transport.h" 55 #include "btstack_run_loop.h" 56 57 #ifdef ENABLE_CLASSIC 58 #include "classic/btstack_link_key_db.h" 59 #endif 60 61 #ifdef ENABLE_BLE 62 #include "ble/att_db.h" 63 #endif 64 65 #ifdef HAVE_SCO_TRANSPORT 66 #include "btstack_sco_transport.h" 67 #endif 68 69 #include <stdint.h> 70 #include <stdlib.h> 71 #include <stdarg.h> 72 73 #if defined __cplusplus 74 extern "C" { 75 #endif 76 77 // packet buffer sizes 78 #define HCI_CMD_HEADER_SIZE 3 79 #define HCI_ACL_HEADER_SIZE 4 80 #define HCI_SCO_HEADER_SIZE 3 81 #define HCI_EVENT_HEADER_SIZE 2 82 83 #define HCI_EVENT_PAYLOAD_SIZE 255 84 #define HCI_CMD_PAYLOAD_SIZE 255 85 86 // Max HCI Command LE payload size: 87 // 64 from LE Generate DHKey command 88 // 32 from LE Encrypt command 89 #if defined(ENABLE_LE_SECURE_CONNECTIONS) && !defined(ENABLE_MICRO_ECC_FOR_LE_SECURE_CONNECTIONS) 90 #define HCI_CMD_PAYLOAD_SIZE_LE 64 91 #else 92 #define HCI_CMD_PAYLOAD_SIZE_LE 32 93 #endif 94 95 // HCI_ACL_PAYLOAD_SIZE is configurable and defined in config.h 96 // addition byte in even to terminate remote name request with '\0' 97 #define HCI_EVENT_BUFFER_SIZE (HCI_EVENT_HEADER_SIZE + HCI_EVENT_PAYLOAD_SIZE + 1) 98 99 #ifdef ENABLE_CLASSIC 100 #define HCI_CMD_BUFFER_SIZE (HCI_CMD_HEADER_SIZE + HCI_CMD_PAYLOAD_SIZE) 101 #else 102 #define HCI_CMD_BUFFER_SIZE (HCI_CMD_HEADER_SIZE + HCI_CMD_PAYLOAD_SIZE_LE) 103 #endif 104 105 #define HCI_ACL_BUFFER_SIZE (HCI_ACL_HEADER_SIZE + HCI_ACL_PAYLOAD_SIZE) 106 107 // size of hci incoming buffer, big enough for event or acl packet without H4 packet type 108 #ifdef HCI_INCOMING_PACKET_BUFFER_SIZE 109 #if HCI_INCOMING_PACKET_BUFFER_SIZE < HCI_ACL_BUFFER_SIZE 110 #error HCI_INCOMING_PACKET_BUFFER_SIZE must be equal or larger than HCI_ACL_BUFFER_SIZE 111 #endif 112 #if HCI_INCOMING_PACKET_BUFFER_SIZE < HCI_EVENT_BUFFER_SIZE 113 #error HCI_INCOMING_PACKET_BUFFER_SIZE must be equal or larger than HCI_EVENT_BUFFER_SIZE 114 #endif 115 #else 116 #if HCI_ACL_BUFFER_SIZE > HCI_EVENT_BUFFER_SIZE 117 #define HCI_INCOMING_PACKET_BUFFER_SIZE HCI_ACL_BUFFER_SIZE 118 #else 119 #define HCI_INCOMING_PACKET_BUFFER_SIZE HCI_EVENT_BUFFER_SIZE 120 #endif 121 #endif 122 123 // size of hci outgoing buffer, big enough for command or acl packet without H4 packet type 124 #ifdef HCI_OUTGOING_PACKET_BUFFER_SIZE 125 #if HCI_OUTGOING_PACKET_BUFFER_SIZE < HCI_ACL_BUFFER_SIZE 126 #error HCI_OUTGOING_PACKET_BUFFER_SIZE must be equal or larger than HCI_ACL_BUFFER_SIZE 127 #endif 128 #if HCI_OUTGOING_PACKET_BUFFER_SIZE < HCI_CMD_BUFFER_SIZE 129 #error HCI_OUTGOING_PACKET_BUFFER_SIZE must be equal or larger than HCI_CMD_BUFFER_SIZE 130 #endif 131 #else 132 #if HCI_ACL_BUFFER_SIZE > HCI_CMD_BUFFER_SIZE 133 #define HCI_OUTGOING_PACKET_BUFFER_SIZE HCI_ACL_BUFFER_SIZE 134 #else 135 #define HCI_OUTGOING_PACKET_BUFFER_SIZE HCI_CMD_BUFFER_SIZE 136 #endif 137 #endif 138 139 // additional pre-buffer space for packets to Bluetooth module 140 // - H4 requires 1 byte for the packet type 141 // - h5 requires 4 bytes for H5 header 142 #ifndef HCI_OUTGOING_PRE_BUFFER_SIZE 143 #ifdef HAVE_HOST_CONTROLLER_API 144 #define HCI_OUTGOING_PRE_BUFFER_SIZE 0 145 #else 146 #ifdef ENABLE_H5 147 #define HCI_OUTGOING_PRE_BUFFER_SIZE 4 148 #else 149 #define HCI_OUTGOING_PRE_BUFFER_SIZE 1 150 #endif 151 #endif 152 #endif 153 154 // BNEP may uncompress the IP Header by 16 bytes, GATT Client requires two additional bytes for long characteristic reads 155 #ifndef HCI_INCOMING_PRE_BUFFER_SIZE 156 #ifdef ENABLE_CLASSIC 157 #define HCI_INCOMING_PRE_BUFFER_SIZE (16 - HCI_ACL_HEADER_SIZE - 4) 158 #else 159 #define HCI_INCOMING_PRE_BUFFER_SIZE 2 160 #endif 161 #endif 162 163 // 164 #define IS_COMMAND(packet, command) ( little_endian_read_16(packet,0) == command.opcode ) 165 166 // check if command complete event for given command 167 #define HCI_EVENT_IS_COMMAND_COMPLETE(event,cmd) ( (event[0] == HCI_EVENT_COMMAND_COMPLETE) && (little_endian_read_16(event,3) == cmd.opcode) ) 168 #define HCI_EVENT_IS_COMMAND_STATUS(event,cmd) ( (event[0] == HCI_EVENT_COMMAND_STATUS) && (little_endian_read_16(event,4) == cmd.opcode) ) 169 170 // Code+Len=2, Pkts+Opcode=3; total=5 171 #define OFFSET_OF_DATA_IN_COMMAND_COMPLETE 5 172 173 // ACL Packet 174 #define READ_ACL_CONNECTION_HANDLE( buffer ) ( little_endian_read_16(buffer,0) & 0x0fff) 175 #define READ_SCO_CONNECTION_HANDLE( buffer ) ( little_endian_read_16(buffer,0) & 0x0fff) 176 #define READ_ACL_FLAGS( buffer ) ( buffer[1] >> 4 ) 177 #define READ_ACL_LENGTH( buffer ) (little_endian_read_16(buffer, 2)) 178 179 // Sneak peak into L2CAP Packet 180 #define READ_L2CAP_LENGTH(buffer) ( little_endian_read_16(buffer, 4)) 181 #define READ_L2CAP_CHANNEL_ID(buffer) ( little_endian_read_16(buffer, 6)) 182 183 /** 184 * LE connection parameter update state 185 */ 186 187 typedef enum { 188 CON_PARAMETER_UPDATE_NONE, 189 // L2CAP 190 CON_PARAMETER_UPDATE_SEND_REQUEST, 191 CON_PARAMETER_UPDATE_SEND_RESPONSE, 192 CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS, 193 CON_PARAMETER_UPDATE_DENY, 194 // HCI - in respnose to HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST 195 CON_PARAMETER_UPDATE_REPLY, 196 CON_PARAMETER_UPDATE_NEGATIVE_REPLY, 197 } le_con_parameter_update_state_t; 198 199 // Authentication flags 200 typedef enum { 201 AUTH_FLAG_NONE = 0x0000, 202 AUTH_FLAG_HANDLE_LINK_KEY_REQUEST = 0x0001, 203 AUTH_FLAG_DENY_PIN_CODE_REQUEST = 0x0002, 204 AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST = 0x0004, 205 AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE = 0x0008, 206 AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY = 0x0010, 207 AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY = 0x0020, 208 AUTH_FLAG_SEND_USER_CONFIRM_REPLY = 0x0040, 209 AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY = 0x0080, 210 AUTH_FLAG_SEND_USER_PASSKEY_REPLY = 0x0100, 211 212 // Classic OOB 213 AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY = 0x0200, 214 215 // pairing status 216 AUTH_FLAG_LEGACY_PAIRING_ACTIVE = 0x0400, 217 AUTH_FLAG_SSP_PAIRING_ACTIVE = 0x0800, 218 AUTH_FLAG_PAIRING_ACTIVE_MASK = (AUTH_FLAG_LEGACY_PAIRING_ACTIVE | AUTH_FLAG_SSP_PAIRING_ACTIVE), 219 220 // connection status 221 AUTH_FLAG_CONNECTION_AUTHENTICATED = 0x1000, 222 AUTH_FLAG_CONNECTION_ENCRYPTED = 0x2000, 223 224 // errands 225 AUTH_FLAG_READ_RSSI = 0x4000, 226 AUTH_FLAG_WRITE_SUPERVISION_TIMEOUT = 0x8000, 227 228 } hci_authentication_flags_t; 229 230 /** 231 * Connection State 232 */ 233 typedef enum { 234 SEND_CREATE_CONNECTION = 0, 235 SENT_CREATE_CONNECTION, 236 SEND_CANCEL_CONNECTION, 237 SENT_CANCEL_CONNECTION, 238 RECEIVED_CONNECTION_REQUEST, 239 ACCEPTED_CONNECTION_REQUEST, 240 REJECTED_CONNECTION_REQUEST, 241 OPEN, 242 SEND_DISCONNECT, 243 SENT_DISCONNECT, 244 RECEIVED_DISCONNECTION_COMPLETE 245 } CONNECTION_STATE; 246 247 // bonding flags 248 enum { 249 // remote features 250 BONDING_REMOTE_FEATURES_QUERY_ACTIVE = 0x0001, 251 BONDING_REQUEST_REMOTE_FEATURES_PAGE_0 = 0x0002, 252 BONDING_REQUEST_REMOTE_FEATURES_PAGE_1 = 0x0004, 253 BONDING_REQUEST_REMOTE_FEATURES_PAGE_2 = 0x0008, 254 BONDING_RECEIVED_REMOTE_FEATURES = 0x0010, 255 BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER = 0x0020, 256 BONDING_REMOTE_SUPPORTS_SSP_HOST = 0x0040, 257 BONDING_REMOTE_SUPPORTS_SC_CONTROLLER = 0x0080, 258 BONDING_REMOTE_SUPPORTS_SC_HOST = 0x0100, 259 // other 260 BONDING_DISCONNECT_SECURITY_BLOCK = 0x0200, 261 BONDING_DISCONNECT_DEDICATED_DONE = 0x0400, 262 BONDING_SEND_AUTHENTICATE_REQUEST = 0x0800, 263 BONDING_SENT_AUTHENTICATE_REQUEST = 0x1000, 264 BONDING_SEND_ENCRYPTION_REQUEST = 0x2000, 265 BONDING_SEND_READ_ENCRYPTION_KEY_SIZE = 0x4000, 266 BONDING_DEDICATED = 0x8000, 267 BONDING_EMIT_COMPLETE_ON_DISCONNECT = 0x10000, 268 }; 269 270 typedef enum { 271 BLUETOOTH_OFF = 1, 272 BLUETOOTH_ON, 273 BLUETOOTH_ACTIVE 274 } BLUETOOTH_STATE; 275 276 typedef enum { 277 LE_CONNECTING_IDLE, 278 LE_CONNECTING_CANCEL, 279 LE_CONNECTING_DIRECT, 280 LE_CONNECTING_WHITELIST, 281 } le_connecting_state_t; 282 283 #ifdef ENABLE_BLE 284 285 // 286 // SM internal types and globals 287 // 288 289 typedef enum { 290 291 // general states 292 SM_GENERAL_IDLE, 293 SM_GENERAL_SEND_PAIRING_FAILED, 294 SM_GENERAL_TIMEOUT, // no other security messages are exchanged 295 SM_GENERAL_REENCRYPTION_FAILED, 296 297 // Phase 1: Pairing Feature Exchange 298 SM_PH1_W4_USER_RESPONSE, 299 300 // Phase 2: Authenticating and Encrypting 301 302 // get random number for use as TK Passkey if we show it 303 SM_PH2_GET_RANDOM_TK, 304 SM_PH2_W4_RANDOM_TK, 305 306 // get local random number for confirm c1 307 SM_PH2_C1_GET_RANDOM_A, 308 SM_PH2_C1_W4_RANDOM_A, 309 SM_PH2_C1_GET_RANDOM_B, 310 SM_PH2_C1_W4_RANDOM_B, 311 312 // calculate confirm value for local side 313 SM_PH2_C1_GET_ENC_A, 314 SM_PH2_C1_W4_ENC_A, 315 316 // calculate confirm value for remote side 317 SM_PH2_C1_GET_ENC_C, 318 SM_PH2_C1_W4_ENC_C, 319 320 SM_PH2_C1_SEND_PAIRING_CONFIRM, 321 SM_PH2_SEND_PAIRING_RANDOM, 322 323 // calc STK 324 SM_PH2_CALC_STK, 325 SM_PH2_W4_STK, 326 327 SM_PH2_W4_CONNECTION_ENCRYPTED, 328 329 // Phase 3: Transport Specific Key Distribution 330 // calculate DHK, Y, EDIV, and LTK 331 SM_PH3_Y_GET_ENC, 332 SM_PH3_Y_W4_ENC, 333 SM_PH3_LTK_GET_ENC, 334 335 // exchange keys 336 SM_PH3_DISTRIBUTE_KEYS, 337 SM_PH3_RECEIVE_KEYS, 338 339 // Phase 4: re-establish previously distributed LTK 340 SM_PH4_W4_CONNECTION_ENCRYPTED, 341 342 // RESPONDER ROLE 343 SM_RESPONDER_IDLE, 344 SM_RESPONDER_SEND_SECURITY_REQUEST, 345 SM_RESPONDER_PH0_RECEIVED_LTK_REQUEST, 346 SM_RESPONDER_PH0_RECEIVED_LTK_W4_IRK, 347 SM_RESPONDER_PH0_SEND_LTK_REQUESTED_NEGATIVE_REPLY, 348 SM_RESPONDER_PH1_W4_PAIRING_REQUEST, 349 SM_RESPONDER_PH1_PAIRING_REQUEST_RECEIVED, 350 SM_RESPONDER_PH1_PAIRING_REQUEST_RECEIVED_W4_IRK, 351 SM_RESPONDER_PH1_SEND_PAIRING_RESPONSE, 352 SM_RESPONDER_PH1_W4_PAIRING_CONFIRM, 353 SM_RESPONDER_PH2_W4_PAIRING_RANDOM, 354 SM_RESPONDER_PH2_W4_LTK_REQUEST, 355 SM_RESPONDER_PH2_SEND_LTK_REPLY, 356 SM_RESPONDER_PH4_Y_W4_ENC, 357 SM_RESPONDER_PH4_SEND_LTK_REPLY, 358 359 // INITIATOR ROLE 360 SM_INITIATOR_CONNECTED, 361 SM_INITIATOR_PH1_W2_SEND_PAIRING_REQUEST, 362 SM_INITIATOR_PH1_W4_PAIRING_RESPONSE, 363 SM_INITIATOR_PH2_W4_PAIRING_CONFIRM, 364 SM_INITIATOR_PH2_W4_PAIRING_RANDOM, 365 SM_INITIATOR_PH3_SEND_START_ENCRYPTION, 366 SM_INITIATOR_PH4_HAS_LTK, 367 368 // LE Secure Connections 369 SM_SC_RECEIVED_LTK_REQUEST, 370 SM_SC_SEND_PUBLIC_KEY_COMMAND, 371 SM_SC_W4_PUBLIC_KEY_COMMAND, 372 SM_SC_W4_LOCAL_NONCE, 373 SM_SC_W2_CMAC_FOR_CONFIRMATION, 374 SM_SC_W4_CMAC_FOR_CONFIRMATION, 375 SM_SC_SEND_CONFIRMATION, 376 SM_SC_W2_CMAC_FOR_CHECK_CONFIRMATION, 377 SM_SC_W4_CMAC_FOR_CHECK_CONFIRMATION, 378 SM_SC_W4_CONFIRMATION, 379 SM_SC_SEND_PAIRING_RANDOM, 380 SM_SC_W4_PAIRING_RANDOM, 381 SM_SC_W2_CALCULATE_G2, 382 SM_SC_W4_CALCULATE_G2, 383 SM_SC_W4_CALCULATE_DHKEY, 384 SM_SC_W2_CALCULATE_F5_SALT, 385 SM_SC_W4_CALCULATE_F5_SALT, 386 SM_SC_W2_CALCULATE_F5_MACKEY, 387 SM_SC_W4_CALCULATE_F5_MACKEY, 388 SM_SC_W2_CALCULATE_F5_LTK, 389 SM_SC_W4_CALCULATE_F5_LTK, 390 SM_SC_W2_CALCULATE_F6_FOR_DHKEY_CHECK, 391 SM_SC_W4_CALCULATE_F6_FOR_DHKEY_CHECK, 392 SM_SC_W2_CALCULATE_F6_TO_VERIFY_DHKEY_CHECK, 393 SM_SC_W4_CALCULATE_F6_TO_VERIFY_DHKEY_CHECK, 394 SM_SC_W4_USER_RESPONSE, 395 SM_SC_SEND_DHKEY_CHECK_COMMAND, 396 SM_SC_W4_DHKEY_CHECK_COMMAND, 397 SM_SC_W4_LTK_REQUEST_SC, 398 SM_SC_W2_CALCULATE_ILK_USING_H6, 399 SM_SC_W2_CALCULATE_ILK_USING_H7, 400 SM_SC_W4_CALCULATE_ILK, 401 SM_SC_W2_CALCULATE_BR_EDR_LINK_KEY, 402 SM_SC_W4_CALCULATE_BR_EDR_LINK_KEY, 403 404 // Classic 405 SM_BR_EDR_W4_ENCRYPTION_COMPLETE, 406 SM_BR_EDR_INITIATOR_SEND_PAIRING_REQUEST, 407 SM_BR_EDR_INITIATOR_W4_PAIRING_RESPONSE, 408 SM_BR_EDR_RESPONDER_W4_PAIRING_REQUEST, 409 SM_BR_EDR_RESPONDER_PAIRING_REQUEST_RECEIVED, 410 SM_BR_EDR_DISTRIBUTE_KEYS, 411 SM_BR_EDR_RECEIVE_KEYS, 412 SM_BR_EDR_W2_CALCULATE_ILK_USING_H6, 413 SM_BR_EDR_W2_CALCULATE_ILK_USING_H7, 414 SM_BR_EDR_W4_CALCULATE_ILK, 415 SM_BR_EDR_W2_CALCULATE_LE_LTK, 416 SM_BR_EDR_W4_CALCULATE_LE_LTK, 417 } security_manager_state_t; 418 419 typedef enum { 420 IRK_LOOKUP_IDLE, 421 IRK_LOOKUP_W4_READY, 422 IRK_LOOKUP_STARTED, 423 IRK_LOOKUP_SUCCEEDED, 424 IRK_LOOKUP_FAILED 425 } irk_lookup_state_t; 426 427 typedef uint8_t sm_pairing_packet_t[7]; 428 429 // connection info available as long as connection exists 430 typedef struct sm_connection { 431 hci_con_handle_t sm_handle; 432 uint16_t sm_cid; 433 uint8_t sm_role; // 0 - IamMaster, 1 = IamSlave 434 uint8_t sm_security_request_received; 435 uint8_t sm_pairing_requested; 436 uint8_t sm_peer_addr_type; 437 bd_addr_t sm_peer_address; 438 uint8_t sm_own_addr_type; 439 bd_addr_t sm_own_address; 440 security_manager_state_t sm_engine_state; 441 irk_lookup_state_t sm_irk_lookup_state; 442 uint8_t sm_pairing_failed_reason; 443 uint8_t sm_connection_encrypted; 444 uint8_t sm_connection_authenticated; // [0..1] 445 uint8_t sm_connection_sc; 446 uint8_t sm_actual_encryption_key_size; 447 sm_pairing_packet_t sm_m_preq; // only used during c1 448 authorization_state_t sm_connection_authorization_state; 449 uint16_t sm_local_ediv; 450 uint8_t sm_local_rand[8]; 451 int sm_le_db_index; 452 bool sm_pairing_active; 453 bool sm_reencryption_active; 454 } sm_connection_t; 455 456 // 457 // ATT Server 458 // 459 460 // max ATT request matches L2CAP PDU -- allow to use smaller buffer 461 #ifndef ATT_REQUEST_BUFFER_SIZE 462 #define ATT_REQUEST_BUFFER_SIZE HCI_ACL_PAYLOAD_SIZE 463 #endif 464 465 typedef enum { 466 ATT_SERVER_IDLE, 467 ATT_SERVER_REQUEST_RECEIVED, 468 ATT_SERVER_W4_SIGNED_WRITE_VALIDATION, 469 ATT_SERVER_REQUEST_RECEIVED_AND_VALIDATED, 470 ATT_SERVER_RESPONSE_PENDING, 471 } att_server_state_t; 472 473 typedef struct { 474 att_server_state_t state; 475 476 uint8_t peer_addr_type; 477 bd_addr_t peer_address; 478 479 int ir_le_device_db_index; 480 uint8_t ir_lookup_active; 481 uint8_t pairing_active; 482 483 int value_indication_handle; 484 btstack_timer_source_t value_indication_timer; 485 486 btstack_linked_list_t notification_requests; 487 btstack_linked_list_t indication_requests; 488 489 #ifdef ENABLE_GATT_OVER_CLASSIC 490 uint16_t l2cap_cid; 491 #endif 492 493 uint16_t request_size; 494 uint8_t request_buffer[ATT_REQUEST_BUFFER_SIZE]; 495 496 } att_server_t; 497 498 #endif 499 500 #ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE 501 typedef enum { 502 L2CAP_INFORMATION_STATE_IDLE = 0, 503 L2CAP_INFORMATION_STATE_W2_SEND_EXTENDED_FEATURE_REQUEST, 504 L2CAP_INFORMATION_STATE_W4_EXTENDED_FEATURE_RESPONSE, 505 L2CAP_INFORMATION_STATE_DONE 506 } l2cap_information_state_t; 507 508 typedef struct { 509 l2cap_information_state_t information_state; 510 uint16_t extended_feature_mask; 511 } l2cap_state_t; 512 #endif 513 514 // 515 typedef struct { 516 // linked list - assert: first field 517 btstack_linked_item_t item; 518 519 // remote side 520 bd_addr_t address; 521 522 // module handle 523 hci_con_handle_t con_handle; 524 525 // le public, le random, classic 526 bd_addr_type_t address_type; 527 528 // role: 0 - master, 1 - slave 529 uint8_t role; 530 531 // connection state 532 CONNECTION_STATE state; 533 534 // bonding 535 uint32_t bonding_flags; 536 uint8_t bonding_status; 537 538 // encryption key size (in octets) 539 uint8_t encryption_key_size; 540 541 // requested security level 542 gap_security_level_t requested_security_level; 543 544 // link key and its type 545 link_key_t link_key; 546 link_key_type_t link_key_type; 547 548 // remote supported features 549 /* bit 0 - eSCO */ 550 /* bit 1 - extended features */ 551 uint8_t remote_supported_features[1]; 552 553 #ifdef ENABLE_CLASSIC 554 // IO Capabilities Response 555 uint8_t io_cap_response_auth_req; 556 uint8_t io_cap_response_io; 557 #ifdef ENABLE_CLASSIC_PAIRING_OOB 558 uint8_t io_cap_response_oob_data; 559 #endif 560 561 // connection mode, default ACL_CONNECTION_MODE_ACTIVE 562 uint8_t connection_mode; 563 564 // enter/exit sniff mode requests 565 uint16_t sniff_min_interval; // 0: idle, 0xffff exit sniff, else enter sniff 566 uint16_t sniff_max_interval; 567 uint16_t sniff_attempt; 568 uint16_t sniff_timeout; 569 570 // sniff subrating 571 uint16_t sniff_subrating_max_latency; // 0xffff = not set 572 uint16_t sniff_subrating_min_remote_timeout; 573 uint16_t sniff_subrating_min_local_timeout; 574 575 // QoS 576 hci_service_type_t qos_service_type; 577 uint32_t qos_token_rate; 578 uint32_t qos_peak_bandwidth; 579 uint32_t qos_latency; 580 uint32_t qos_delay_variation; 581 582 #ifdef ENABLE_SCO_OVER_HCI 583 // track SCO rx event 584 uint32_t sco_rx_ms; 585 uint8_t sco_rx_count; 586 uint8_t sco_rx_valid; 587 #endif 588 // generate sco can send now based on received packets, using timeout below 589 uint8_t sco_tx_ready; 590 591 // request role switch 592 hci_role_t request_role; 593 594 btstack_timer_source_t timeout_sco; 595 #endif /* ENABLE_CLASSIC */ 596 597 // authentication and other errands 598 uint32_t authentication_flags; 599 600 btstack_timer_source_t timeout; 601 602 // timeout in system ticks (HAVE_EMBEDDED_TICK) or milliseconds (HAVE_EMBEDDED_TIME_MS) 603 uint32_t timestamp; 604 605 // ACL packet recombination - PRE_BUFFER + ACL Header + ACL payload 606 uint8_t acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + 4 + HCI_ACL_BUFFER_SIZE]; 607 uint16_t acl_recombination_pos; 608 uint16_t acl_recombination_length; 609 610 611 // number packets sent to controller 612 uint8_t num_packets_sent; 613 614 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 615 uint8_t num_packets_completed; 616 #endif 617 618 // LE Connection parameter update 619 le_con_parameter_update_state_t le_con_parameter_update_state; 620 uint8_t le_con_param_update_identifier; 621 uint16_t le_conn_interval_min; 622 uint16_t le_conn_interval_max; 623 uint16_t le_conn_latency; 624 uint16_t le_supervision_timeout; 625 626 #ifdef ENABLE_BLE 627 uint16_t le_connection_interval; 628 629 // LE PHY Update via set phy command 630 uint8_t le_phy_update_all_phys; // 0xff for idle 631 uint8_t le_phy_update_tx_phys; 632 uint8_t le_phy_update_rx_phys; 633 int8_t le_phy_update_phy_options; 634 635 // LE Security Manager 636 sm_connection_t sm_connection; 637 638 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 639 uint16_t le_max_tx_octets; 640 #endif 641 642 // ATT Connection 643 att_connection_t att_connection; 644 645 // ATT Server 646 att_server_t att_server; 647 648 #endif 649 650 #ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE 651 l2cap_state_t l2cap_state; 652 #endif 653 654 #ifdef ENABLE_CLASSIC_PAIRING_OOB 655 const uint8_t * classic_oob_c_192; 656 const uint8_t * classic_oob_r_192; 657 const uint8_t * classic_oob_c_256; 658 const uint8_t * classic_oob_r_256; 659 #endif 660 661 } hci_connection_t; 662 663 664 /** 665 * HCI Inititizlization State Machine 666 */ 667 typedef enum hci_init_state{ 668 HCI_INIT_SEND_RESET = 0, 669 HCI_INIT_W4_SEND_RESET, 670 HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION, 671 HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION, 672 673 #ifndef HAVE_HOST_CONTROLLER_API 674 HCI_INIT_SEND_READ_LOCAL_NAME, 675 HCI_INIT_W4_SEND_READ_LOCAL_NAME, 676 HCI_INIT_SEND_BAUD_CHANGE, 677 HCI_INIT_W4_SEND_BAUD_CHANGE, 678 HCI_INIT_CUSTOM_INIT, 679 HCI_INIT_W4_CUSTOM_INIT, 680 HCI_INIT_SEND_RESET_CSR_WARM_BOOT, 681 HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT, 682 HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET, 683 HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY, 684 #endif 685 686 HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS, 687 HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS, 688 689 HCI_INIT_SEND_BAUD_CHANGE_BCM, 690 HCI_INIT_W4_SEND_BAUD_CHANGE_BCM, 691 692 HCI_INIT_SET_BD_ADDR, 693 HCI_INIT_W4_SET_BD_ADDR, 694 695 HCI_INIT_SEND_RESET_ST_WARM_BOOT, 696 HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT, 697 698 HCI_INIT_READ_BD_ADDR, 699 HCI_INIT_W4_READ_BD_ADDR, 700 701 HCI_INIT_READ_BUFFER_SIZE, 702 HCI_INIT_W4_READ_BUFFER_SIZE, 703 HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES, 704 HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES, 705 706 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 707 HCI_INIT_HOST_BUFFER_SIZE, 708 HCI_INIT_W4_HOST_BUFFER_SIZE, 709 HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL, 710 HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL, 711 #endif 712 713 HCI_INIT_SET_EVENT_MASK, 714 HCI_INIT_W4_SET_EVENT_MASK, 715 716 #ifdef ENABLE_CLASSIC 717 HCI_INIT_WRITE_SIMPLE_PAIRING_MODE, 718 HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE, 719 HCI_INIT_WRITE_INQUIRY_MODE, 720 HCI_INIT_W4_WRITE_INQUIRY_MODE, 721 HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE, 722 HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE, 723 724 #ifdef ENABLE_SCO_OVER_HCI 725 // SCO over HCI 726 HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, 727 HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, 728 HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 729 HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 730 #endif 731 732 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 733 // Broadcom SCO Routing and Configuration 734 HCI_INIT_BCM_WRITE_SCO_PCM_INT, 735 HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT, 736 #endif 737 #ifdef ENABLE_SCO_OVER_PCM 738 HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM, 739 HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM, 740 #endif 741 #endif 742 743 #ifdef ENABLE_BLE 744 HCI_INIT_LE_READ_BUFFER_SIZE, 745 HCI_INIT_W4_LE_READ_BUFFER_SIZE, 746 HCI_INIT_WRITE_LE_HOST_SUPPORTED, 747 HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED, 748 HCI_INIT_LE_SET_EVENT_MASK, 749 HCI_INIT_W4_LE_SET_EVENT_MASK, 750 #endif 751 752 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 753 HCI_INIT_LE_READ_MAX_DATA_LENGTH, 754 HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH, 755 HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH, 756 HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH, 757 #endif 758 759 #ifdef ENABLE_LE_CENTRAL 760 HCI_INIT_READ_WHITE_LIST_SIZE, 761 HCI_INIT_W4_READ_WHITE_LIST_SIZE, 762 763 HCI_INIT_LE_SET_SCAN_PARAMETERS, 764 HCI_INIT_W4_LE_SET_SCAN_PARAMETERS, 765 #endif 766 767 HCI_INIT_DONE, 768 769 HCI_FALLING_ASLEEP_DISCONNECT, 770 HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE, 771 HCI_FALLING_ASLEEP_COMPLETE, 772 773 HCI_INIT_AFTER_SLEEP, 774 775 HCI_HALTING_DISCONNECT_ALL_NO_TIMER, 776 HCI_HALTING_DISCONNECT_ALL_TIMER, 777 HCI_HALTING_W4_TIMER, 778 HCI_HALTING_CLOSE, 779 780 } hci_substate_t; 781 782 #define GAP_TASK_SET_LOCAL_NAME 0x01 783 #define GAP_TASK_SET_EIR_DATA 0x02 784 #define GAP_TASK_SET_CLASS_OF_DEVICE 0x04 785 #define GAP_TASK_SET_DEFAULT_LINK_POLICY 0x08 786 #define GAP_TASK_WRITE_SCAN_ENABLE 0x10 787 #define GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY 0x20 788 #define GAP_TASK_WRITE_PAGE_SCAN_TYPE 0x40 789 #define GAP_TASK_WRITE_PAGE_TIMEOUT 0x80 790 791 enum { 792 // Tasks 793 LE_ADVERTISEMENT_TASKS_SET_ADV_DATA = 1 << 0, 794 LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA = 1 << 1, 795 LE_ADVERTISEMENT_TASKS_SET_PARAMS = 1 << 2, 796 LE_ADVERTISEMENT_TASKS_SET_ADDRESS = 1 << 3, 797 // State 798 LE_ADVERTISEMENT_TASKS_PARAMS_SET = 1 << 7, 799 }; 800 801 enum { 802 LE_WHITELIST_ON_CONTROLLER = 1 << 0, 803 LE_WHITELIST_ADD_TO_CONTROLLER = 1 << 1, 804 LE_WHITELIST_REMOVE_FROM_CONTROLLER = 1 << 2, 805 }; 806 807 typedef struct { 808 btstack_linked_item_t item; 809 bd_addr_t address; 810 bd_addr_type_t address_type; 811 uint8_t state; 812 } whitelist_entry_t; 813 814 #define MAX_NUM_RESOLVING_LIST_ENTRIES 64 815 typedef enum { 816 LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION, 817 LE_RESOLVING_LIST_READ_SIZE, 818 LE_RESOLVING_LIST_SEND_CLEAR, 819 LE_RESOLVING_LIST_REMOVE_ENTRIES, 820 LE_RESOLVING_LIST_ADD_ENTRIES, 821 LE_RESOLVING_LIST_DONE 822 } le_resolving_list_state_t; 823 824 /** 825 * main data structure 826 */ 827 typedef struct { 828 // transport component with configuration 829 const hci_transport_t * hci_transport; 830 const void * config; 831 832 // chipset driver 833 const btstack_chipset_t * chipset; 834 835 // hardware power controller 836 const btstack_control_t * control; 837 838 #ifdef ENABLE_CLASSIC 839 /* link key db */ 840 const btstack_link_key_db_t * link_key_db; 841 #endif 842 843 // list of existing baseband connections 844 btstack_linked_list_t connections; 845 846 /* callback to L2CAP layer */ 847 btstack_packet_handler_t acl_packet_handler; 848 849 /* callback for SCO data */ 850 btstack_packet_handler_t sco_packet_handler; 851 852 /* callbacks for events */ 853 btstack_linked_list_t event_handlers; 854 855 #ifdef ENABLE_CLASSIC 856 /* callback for reject classic connection */ 857 int (*gap_classic_accept_callback)(bd_addr_t addr, hci_link_type_t link_type); 858 #endif 859 860 // hardware error callback 861 void (*hardware_error_callback)(uint8_t error); 862 863 // basic configuration 864 const char * local_name; 865 const uint8_t * eir_data; 866 uint32_t class_of_device; 867 bd_addr_t local_bd_addr; 868 uint8_t default_link_policy_settings; 869 uint8_t allow_role_switch; 870 uint8_t ssp_enable; 871 uint8_t ssp_io_capability; 872 uint8_t ssp_authentication_requirement; 873 uint8_t ssp_auto_accept; 874 bool secure_connections_enable; 875 bool secure_connections_active; 876 inquiry_mode_t inquiry_mode; 877 878 #ifdef ENABLE_CLASSIC 879 /* GAP tasks, see GAP_TASK_* */ 880 uint16_t gap_tasks; 881 882 /* write page scan activity */ 883 uint16_t new_page_scan_interval; 884 uint16_t new_page_scan_window; 885 886 /* write page scan type */ 887 uint8_t new_page_scan_type; 888 889 /* write page timeout */ 890 uint16_t page_timeout; 891 892 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3, we use 16 as default 893 uint8_t gap_required_encyrption_key_size; 894 uint16_t link_supervision_timeout; 895 gap_security_level_t gap_security_level; 896 gap_security_level_t gap_minimal_service_security_level; 897 gap_security_mode_t gap_security_mode; 898 899 uint32_t inquiry_lap; // GAP_IAC_GENERAL_INQUIRY or GAP_IAC_LIMITED_INQUIRY 900 901 bool gap_secure_connections_only_mode; 902 #endif 903 904 // single buffer for HCI packet assembly + additional prebuffer for H4 drivers 905 uint8_t * hci_packet_buffer; 906 uint8_t hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE + HCI_OUTGOING_PACKET_BUFFER_SIZE]; 907 bool hci_packet_buffer_reserved; 908 uint16_t acl_fragmentation_pos; 909 uint16_t acl_fragmentation_total_size; 910 uint8_t acl_fragmentation_tx_active; 911 912 /* host to controller flow control */ 913 uint8_t num_cmd_packets; 914 uint8_t acl_packets_total_num; 915 uint16_t acl_data_packet_length; 916 uint8_t sco_packets_total_num; 917 uint8_t sco_data_packet_length; 918 uint8_t synchronous_flow_control_enabled; 919 uint8_t le_acl_packets_total_num; 920 uint16_t le_data_packets_length; 921 uint8_t sco_waiting_for_can_send_now; 922 bool sco_can_send_now; 923 924 /* local supported features */ 925 uint8_t local_supported_features[8]; 926 927 /* local supported commands summary - complete info is 64 bytes */ 928 /* 0 - Read Buffer Size (Octet 14/bit 7) */ 929 /* 1 - Write Le Host Supported (Octet 24/bit 6) */ 930 /* 2 - Write Synchronous Flow Control Enable (Octet 10/bit 4) */ 931 /* 3 - Write Default Erroneous Data Reporting (Octet 18/bit 3) */ 932 /* 4 - LE Write Suggested Default Data Length (Octet 34/bit 0) */ 933 /* 5 - LE Read Maximum Data Length (Octet 35/bit 3) */ 934 /* 6 - LE Set Default PHY (Octet 35/bit 5) */ 935 /* 7 - Read Encryption Key Size (Octet 20/bit 4) */ 936 /* 8 - Read Remote Extended Features (Octet 2/bit 5) */ 937 /* 9 - Write Secure Connections Host (Octet 32/bit 3) */ 938 /* 10 - LE Set Address Resolution Enable (Octet 35/bit 1) */ 939 /* 11 - Remote OOB Extended Data Request Reply (Octet 32/bit 1) */ 940 /* 12 - Read Local OOB Extended Data command (Octet 32/bit 6) */ 941 uint8_t local_supported_commands[2]; 942 943 /* bluetooth device information from hci read local version information */ 944 // uint16_t hci_version; 945 // uint16_t hci_revision; 946 // uint16_t lmp_version; 947 uint16_t manufacturer; 948 // uint16_t lmp_subversion; 949 950 // usable packet types given acl_data_packet_length and HCI_ACL_BUFFER_SIZE 951 uint16_t packet_types; 952 953 954 /* hci state machine */ 955 HCI_STATE state; 956 hci_substate_t substate; 957 btstack_timer_source_t timeout; 958 btstack_chipset_result_t chipset_result; 959 960 uint16_t last_cmd_opcode; 961 962 uint8_t cmds_ready; 963 964 /* buffer for scan enable cmd - 0xff no change */ 965 uint8_t new_scan_enable_value; 966 967 uint8_t discoverable; 968 uint8_t connectable; 969 uint8_t bondable; 970 971 uint8_t inquiry_state; // see hci.c for state defines 972 973 bd_addr_t remote_name_addr; 974 uint16_t remote_name_clock_offset; 975 uint8_t remote_name_page_scan_repetition_mode; 976 uint8_t remote_name_state; // see hci.c for state defines 977 978 bd_addr_t gap_pairing_addr; 979 uint8_t gap_pairing_state; // see hci.c for state defines 980 uint8_t gap_pairing_pin_len; 981 union { 982 const uint8_t * gap_pairing_pin; 983 uint32_t gap_pairing_passkey; 984 } gap_pairing_input; 985 986 uint16_t sco_voice_setting; 987 uint16_t sco_voice_setting_active; 988 989 uint8_t loopback_mode; 990 991 // buffer for single connection decline 992 uint8_t decline_reason; 993 bd_addr_t decline_addr; 994 995 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 996 uint8_t host_completed_packets; 997 #endif 998 999 #ifdef ENABLE_BLE 1000 uint8_t le_own_addr_type; 1001 bd_addr_t le_random_address; 1002 uint8_t le_random_address_set; 1003 1004 // LE Whitelist Management 1005 uint8_t le_whitelist_capacity; 1006 btstack_linked_list_t le_whitelist; 1007 #endif 1008 1009 #ifdef ENABLE_LE_CENTRAL 1010 bool le_scanning_enabled; 1011 bool le_scanning_active; 1012 1013 le_connecting_state_t le_connecting_state; 1014 le_connecting_state_t le_connecting_request; 1015 1016 bool le_scanning_param_update; 1017 uint8_t le_scan_type; 1018 uint8_t le_scan_filter_policy; 1019 uint16_t le_scan_interval; 1020 uint16_t le_scan_window; 1021 1022 // Connection parameters 1023 uint16_t le_connection_interval_min; 1024 uint16_t le_connection_interval_max; 1025 uint16_t le_connection_latency; 1026 uint16_t le_supervision_timeout; 1027 uint16_t le_minimum_ce_length; 1028 uint16_t le_maximum_ce_length; 1029 uint16_t le_connection_scan_interval; 1030 uint16_t le_connection_scan_window; 1031 uint8_t le_connection_own_addr_type; 1032 bd_addr_t le_connection_own_address; 1033 #endif 1034 1035 le_connection_parameter_range_t le_connection_parameter_range; 1036 1037 #ifdef ENABLE_LE_PERIPHERAL 1038 uint8_t * le_advertisements_data; 1039 uint8_t le_advertisements_data_len; 1040 1041 uint8_t * le_scan_response_data; 1042 uint8_t le_scan_response_data_len; 1043 1044 bool le_advertisements_active; 1045 bool le_advertisements_enabled; 1046 bool le_advertisements_enabled_for_current_roles; 1047 uint8_t le_advertisements_todo; 1048 1049 uint16_t le_advertisements_interval_min; 1050 uint16_t le_advertisements_interval_max; 1051 uint8_t le_advertisements_type; 1052 uint8_t le_advertisements_direct_address_type; 1053 uint8_t le_advertisements_channel_map; 1054 uint8_t le_advertisements_filter_policy; 1055 bd_addr_t le_advertisements_direct_address; 1056 uint8_t le_advertisements_own_addr_type; 1057 bd_addr_t le_advertisements_own_address; 1058 1059 uint8_t le_max_number_peripheral_connections; 1060 #endif 1061 1062 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 1063 // LE Data Length 1064 uint16_t le_supported_max_tx_octets; 1065 uint16_t le_supported_max_tx_time; 1066 #endif 1067 1068 // custom BD ADDR 1069 bd_addr_t custom_bd_addr; 1070 uint8_t custom_bd_addr_set; 1071 1072 #ifdef ENABLE_CLASSIC 1073 uint8_t master_slave_policy; 1074 #endif 1075 1076 // address and address_type of active create connection command (ACL, SCO, LE) 1077 bd_addr_t outgoing_addr; 1078 bd_addr_type_t outgoing_addr_type; 1079 1080 // LE Resolving List 1081 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 1082 le_resolving_list_state_t le_resolving_list_state; 1083 uint16_t le_resolving_list_size; 1084 uint8_t le_resolving_list_add_entries[(MAX_NUM_RESOLVING_LIST_ENTRIES + 7) / 8]; 1085 uint8_t le_resolving_list_remove_entries[(MAX_NUM_RESOLVING_LIST_ENTRIES + 7) / 8]; 1086 #endif 1087 1088 #ifdef ENABLE_CLASSIC_PAIRING_OOB 1089 bool classic_read_local_oob_data; 1090 hci_con_handle_t classic_oob_con_handle; 1091 #endif 1092 1093 #ifdef HAVE_SCO_TRANSPORT 1094 const btstack_sco_transport_t * sco_transport; 1095 #endif 1096 } hci_stack_t; 1097 1098 1099 /* API_START */ 1100 1101 1102 // HCI init and configuration 1103 1104 1105 /** 1106 * @brief Set up HCI. Needs to be called before any other function. 1107 */ 1108 void hci_init(const hci_transport_t *transport, const void *config); 1109 1110 /** 1111 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information. 1112 */ 1113 void hci_set_chipset(const btstack_chipset_t *chipset_driver); 1114 1115 /** 1116 * @brief Configure Bluetooth hardware control. Has to be called before power on. 1117 * @[aram hardware_control implementation 1118 */ 1119 void hci_set_control(const btstack_control_t *hardware_control); 1120 1121 #ifdef HAVE_SCO_TRANSPORT 1122 /** 1123 * @brief Set SCO Transport implementation for SCO over PCM mode 1124 * @param sco_transport that sends SCO over I2S or PCM interface 1125 */ 1126 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport); 1127 #endif 1128 1129 #ifdef ENABLE_CLASSIC 1130 /** 1131 * @brief Configure Bluetooth hardware control. Has to be called before power on. 1132 */ 1133 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db); 1134 #endif 1135 1136 /** 1137 * @brief Set callback for Bluetooth Hardware Error 1138 */ 1139 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)); 1140 1141 /** 1142 * @brief Set Public BD ADDR - passed on to Bluetooth chipset during init if supported in bt_control_h 1143 */ 1144 void hci_set_bd_addr(bd_addr_t addr); 1145 1146 /** 1147 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 1148 */ 1149 void hci_set_sco_voice_setting(uint16_t voice_setting); 1150 1151 /** 1152 * @brief Get SCO Voice Setting 1153 * @return current voice setting 1154 */ 1155 uint16_t hci_get_sco_voice_setting(void); 1156 1157 /** 1158 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 1159 * @param inquriy_mode see bluetooth_defines.h 1160 */ 1161 void hci_set_inquiry_mode(inquiry_mode_t inquriy_mode); 1162 1163 /** 1164 * @brief Requests the change of BTstack power mode. 1165 * @param power_mode 1166 * @return 0 if success, otherwise error 1167 */ 1168 int hci_power_control(HCI_POWER_MODE power_mode); 1169 1170 /** 1171 * @brief Shutdown HCI 1172 */ 1173 void hci_close(void); 1174 1175 1176 // Callback registration 1177 1178 1179 /** 1180 * @brief Add event packet handler. 1181 */ 1182 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler); 1183 1184 /** 1185 * @brief Remove event packet handler. 1186 */ 1187 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler); 1188 1189 /** 1190 * @brief Registers a packet handler for ACL data. Used by L2CAP 1191 */ 1192 void hci_register_acl_packet_handler(btstack_packet_handler_t handler); 1193 1194 /** 1195 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 1196 */ 1197 void hci_register_sco_packet_handler(btstack_packet_handler_t handler); 1198 1199 1200 // Sending HCI Commands 1201 1202 /** 1203 * @brief Check if CMD packet can be sent to controller 1204 * @return true if command can be sent 1205 */ 1206 bool hci_can_send_command_packet_now(void); 1207 1208 /** 1209 * @brief Creates and sends HCI command packets based on a template and a list of parameters. Will return error if outgoing data buffer is occupied. 1210 * @return status 1211 */ 1212 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...); 1213 1214 1215 // Sending SCO Packets 1216 1217 /** @brief Get SCO packet length for current SCO Voice setting 1218 * @note Using SCO packets of the exact length is required for USB transfer 1219 * @return Length of SCO packets in bytes (not audio frames) incl. 3 byte header 1220 */ 1221 uint16_t hci_get_sco_packet_length(void); 1222 1223 /** 1224 * @brief Request emission of HCI_EVENT_SCO_CAN_SEND_NOW as soon as possible 1225 * @note HCI_EVENT_SCO_CAN_SEND_NOW might be emitted during call to this function 1226 * so packet handler should be ready to handle it 1227 */ 1228 void hci_request_sco_can_send_now_event(void); 1229 1230 /** 1231 * @brief Check HCI packet buffer and if SCO packet can be sent to controller 1232 * @return true if sco packet can be sent 1233 */ 1234 bool hci_can_send_sco_packet_now(void); 1235 1236 /** 1237 * @brief Check if SCO packet can be sent to controller 1238 * @return true if sco packet can be sent 1239 */ 1240 bool hci_can_send_prepared_sco_packet_now(void); 1241 1242 /** 1243 * @brief Send SCO packet prepared in HCI packet buffer 1244 */ 1245 uint8_t hci_send_sco_packet_buffer(int size); 1246 1247 /** 1248 * Reserves outgoing packet buffer. 1249 * @return true on success 1250 */ 1251 bool hci_reserve_packet_buffer(void); 1252 1253 /** 1254 * Get pointer for outgoing packet buffer 1255 */ 1256 uint8_t* hci_get_outgoing_packet_buffer(void); 1257 1258 /** 1259 * Release outgoing packet buffer\ 1260 * @note only called instead of hci_send_preparared 1261 */ 1262 void hci_release_packet_buffer(void); 1263 1264 /** 1265 * @brief Sets the master/slave policy 1266 * @param policy (0: attempt to become master, 1: let connecting device decide) 1267 */ 1268 void hci_set_master_slave_policy(uint8_t policy); 1269 1270 /* API_END */ 1271 1272 1273 /** 1274 * va_list version of hci_send_cmd, call hci_send_cmd_packet 1275 * @return status 1276 */ 1277 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr); 1278 1279 /** 1280 * Get connection iterator. Only used by l2cap.c and sm.c 1281 */ 1282 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it); 1283 1284 /** 1285 * Get internal hci_connection_t for given handle. Used by L2CAP, SM, daemon 1286 */ 1287 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle); 1288 1289 /** 1290 * Get internal hci_connection_t for given Bluetooth addres. Called by L2CAP 1291 */ 1292 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type); 1293 1294 /** 1295 * Check if outgoing packet buffer is reserved. Used for internal checks in l2cap.c 1296 * @return true if packet buffer is reserved 1297 */ 1298 bool hci_is_packet_buffer_reserved(void); 1299 1300 /** 1301 * Check hci packet buffer is free and a classic acl packet can be sent to controller 1302 * @return true if ACL Classic packet can be sent now 1303 */ 1304 bool hci_can_send_acl_classic_packet_now(void); 1305 1306 /** 1307 * Check hci packet buffer is free and an LE acl packet can be sent to controller 1308 * @return true if ACL LE packet can be sent now 1309 */ 1310 bool hci_can_send_acl_le_packet_now(void); 1311 1312 /** 1313 * Check hci packet buffer is free and an acl packet for the given handle can be sent to controller 1314 * @return true if ACL packet for con_handle can be sent now 1315 */ 1316 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle); 1317 1318 /** 1319 * Check if acl packet for the given handle can be sent to controller 1320 * @return true if ACL packet for con_handle can be sent now 1321 */ 1322 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle); 1323 1324 /** 1325 * Send acl packet prepared in hci packet buffer 1326 * @return status 1327 */ 1328 uint8_t hci_send_acl_packet_buffer(int size); 1329 1330 /** 1331 * Check if authentication is active. It delays automatic disconnect while no L2CAP connection 1332 * Called by l2cap. 1333 */ 1334 bool hci_authentication_active_for_handle(hci_con_handle_t handle); 1335 1336 /** 1337 * Get maximal ACL Classic data packet length based on used buffer size. Called by L2CAP 1338 */ 1339 uint16_t hci_max_acl_data_packet_length(void); 1340 1341 /** 1342 * Get supported packet types. Called by L2CAP 1343 */ 1344 uint16_t hci_usable_acl_packet_types(void); 1345 1346 /** 1347 * Check if ACL packets marked as non flushable can be sent. Called by L2CAP 1348 */ 1349 bool hci_non_flushable_packet_boundary_flag_supported(void); 1350 1351 /** 1352 * Check if remote supported features query has completed 1353 */ 1354 bool hci_remote_features_available(hci_con_handle_t con_handle); 1355 1356 /** 1357 * Trigger remote supported features query 1358 */ 1359 void hci_remote_features_query(hci_con_handle_t con_handle); 1360 1361 /** 1362 * Check if extended SCO Link is supported 1363 */ 1364 bool hci_extended_sco_link_supported(void); 1365 1366 /** 1367 * Check if SSP is supported on both sides. Called by L2CAP 1368 */ 1369 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle); 1370 1371 /** 1372 * Disconn because of security block. Called by L2CAP 1373 */ 1374 void hci_disconnect_security_block(hci_con_handle_t con_handle); 1375 1376 /** 1377 * Query if remote side supports eSCO 1378 */ 1379 bool hci_remote_esco_supported(hci_con_handle_t con_handle); 1380 1381 /** 1382 * Emit current HCI state. Called by daemon 1383 */ 1384 void hci_emit_state(void); 1385 1386 /** 1387 * Send complete CMD packet. Called by daemon and hci_send_cmd_va_arg 1388 * @return status 1389 */ 1390 uint8_t hci_send_cmd_packet(uint8_t *packet, int size); 1391 1392 /** 1393 * Disconnect all HCI connections. Called by daemon 1394 */ 1395 void hci_disconnect_all(void); 1396 1397 /** 1398 * Get number of free acl slots for packets of given handle. Called by daemon 1399 */ 1400 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle); 1401 1402 /** 1403 * @brief Set Advertisement Parameters 1404 * @param adv_int_min 1405 * @param adv_int_max 1406 * @param adv_type 1407 * @param direct_address_type 1408 * @param direct_address 1409 * @param channel_map 1410 * @param filter_policy 1411 * 1412 * @note internal use. use gap_advertisements_set_params from gap.h instead. 1413 */ 1414 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 1415 uint8_t direct_address_typ, bd_addr_t direct_address, uint8_t channel_map, uint8_t filter_policy); 1416 1417 /** 1418 * 1419 * @note internal use. use gap_random_address_set_mode from gap.h instead. 1420 */ 1421 void hci_le_set_own_address_type(uint8_t own_address_type); 1422 1423 /** 1424 * @naote internal use. use gap_random_address_set from gap.h instead 1425 */ 1426 void hci_le_random_address_set(const bd_addr_t random_address); 1427 1428 /** 1429 * @note internal use by sm 1430 */ 1431 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index); 1432 1433 /** 1434 * @note internal use by sm 1435 */ 1436 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index); 1437 1438 /** 1439 * @brief Get Manufactured 1440 * @return manufacturer id 1441 */ 1442 uint16_t hci_get_manufacturer(void); 1443 1444 /** 1445 * Defer halt. Used by btstack_crypto to allow current HCI operation to complete 1446 */ 1447 void hci_halting_defer(void); 1448 1449 // Only for PTS testing 1450 1451 /** 1452 * Disable automatic L2CAP disconnect if no L2CAP connection is established 1453 */ 1454 void hci_disable_l2cap_timeout_check(void); 1455 1456 /** 1457 * Get Classic Allow Role Switch param 1458 */ 1459 uint8_t hci_get_allow_role_switch(void); 1460 1461 /** 1462 * Get state 1463 */ 1464 HCI_STATE hci_get_state(void); 1465 1466 /** 1467 * @brief De-Init HCI 1468 */ 1469 void hci_deinit(void); 1470 1471 // setup test connections, used for fuzzing 1472 void hci_setup_test_connections_fuzz(void); 1473 1474 // free all connections, used for fuzzing 1475 void hci_free_connections_fuzz(void); 1476 1477 // simulate stack bootup 1478 void hci_simulate_working_fuzz(void); 1479 1480 1481 #if defined __cplusplus 1482 } 1483 #endif 1484 1485 #endif // HCI_H 1486