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 BLUEKITCHEN 24 * GMBH 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 } hci_authentication_flags_t; 225 226 // GAP Connection Tasks 227 #define GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT 0x0001u 228 #define GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT 0x0002u 229 #define GAP_CONNECTION_TASK_READ_RSSI 0x0004u 230 231 /** 232 * Connection State 233 */ 234 typedef enum { 235 SEND_CREATE_CONNECTION = 0, 236 SENT_CREATE_CONNECTION, 237 SEND_CANCEL_CONNECTION, 238 SENT_CANCEL_CONNECTION, 239 RECEIVED_CONNECTION_REQUEST, 240 ACCEPTED_CONNECTION_REQUEST, 241 REJECTED_CONNECTION_REQUEST, 242 OPEN, 243 SEND_DISCONNECT, 244 SENT_DISCONNECT, 245 RECEIVED_DISCONNECTION_COMPLETE 246 } CONNECTION_STATE; 247 248 // bonding flags 249 enum { 250 // remote features 251 BONDING_REMOTE_FEATURES_QUERY_ACTIVE = 0x0001, 252 BONDING_REQUEST_REMOTE_FEATURES_PAGE_0 = 0x0002, 253 BONDING_REQUEST_REMOTE_FEATURES_PAGE_1 = 0x0004, 254 BONDING_REQUEST_REMOTE_FEATURES_PAGE_2 = 0x0008, 255 BONDING_RECEIVED_REMOTE_FEATURES = 0x0010, 256 BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER = 0x0020, 257 BONDING_REMOTE_SUPPORTS_SSP_HOST = 0x0040, 258 BONDING_REMOTE_SUPPORTS_SC_CONTROLLER = 0x0080, 259 BONDING_REMOTE_SUPPORTS_SC_HOST = 0x0100, 260 // other 261 BONDING_DISCONNECT_SECURITY_BLOCK = 0x0200, 262 BONDING_DISCONNECT_DEDICATED_DONE = 0x0400, 263 BONDING_SEND_AUTHENTICATE_REQUEST = 0x0800, 264 BONDING_SENT_AUTHENTICATE_REQUEST = 0x1000, 265 BONDING_SEND_ENCRYPTION_REQUEST = 0x2000, 266 BONDING_SEND_READ_ENCRYPTION_KEY_SIZE = 0x4000, 267 BONDING_DEDICATED = 0x8000, 268 BONDING_EMIT_COMPLETE_ON_DISCONNECT = 0x10000, 269 }; 270 271 typedef enum { 272 BLUETOOTH_OFF = 1, 273 BLUETOOTH_ON, 274 BLUETOOTH_ACTIVE 275 } BLUETOOTH_STATE; 276 277 typedef enum { 278 LE_CONNECTING_IDLE, 279 LE_CONNECTING_CANCEL, 280 LE_CONNECTING_DIRECT, 281 LE_CONNECTING_WHITELIST, 282 } le_connecting_state_t; 283 284 #ifdef ENABLE_BLE 285 286 // 287 // SM internal types and globals 288 // 289 290 typedef enum { 291 292 // general states 293 SM_GENERAL_IDLE, 294 SM_GENERAL_SEND_PAIRING_FAILED, 295 SM_GENERAL_TIMEOUT, // no other security messages are exchanged 296 SM_GENERAL_REENCRYPTION_FAILED, 297 298 // Phase 1: Pairing Feature Exchange 299 SM_PH1_W4_USER_RESPONSE, 300 301 // Phase 2: Authenticating and Encrypting 302 303 // get random number for use as TK Passkey if we show it 304 SM_PH2_GET_RANDOM_TK, 305 SM_PH2_W4_RANDOM_TK, 306 307 // get local random number for confirm c1 308 SM_PH2_C1_GET_RANDOM_A, 309 SM_PH2_C1_W4_RANDOM_A, 310 SM_PH2_C1_GET_RANDOM_B, 311 SM_PH2_C1_W4_RANDOM_B, 312 313 // calculate confirm value for local side 314 SM_PH2_C1_GET_ENC_A, 315 SM_PH2_C1_W4_ENC_A, 316 317 // calculate confirm value for remote side 318 SM_PH2_C1_GET_ENC_C, 319 SM_PH2_C1_W4_ENC_C, 320 321 SM_PH2_C1_SEND_PAIRING_CONFIRM, 322 SM_PH2_SEND_PAIRING_RANDOM, 323 324 // calc STK 325 SM_PH2_CALC_STK, 326 SM_PH2_W4_STK, 327 328 SM_PH2_W4_CONNECTION_ENCRYPTED, 329 330 // Phase 3: Transport Specific Key Distribution 331 // calculate DHK, Y, EDIV, and LTK 332 SM_PH3_Y_GET_ENC, 333 SM_PH3_Y_W4_ENC, 334 SM_PH3_LTK_GET_ENC, 335 336 // exchange keys 337 SM_PH3_DISTRIBUTE_KEYS, 338 SM_PH3_RECEIVE_KEYS, 339 340 // Phase 4: re-establish previously distributed LTK 341 SM_PH4_W4_CONNECTION_ENCRYPTED, 342 343 // RESPONDER ROLE 344 SM_RESPONDER_IDLE, 345 SM_RESPONDER_SEND_SECURITY_REQUEST, 346 SM_RESPONDER_PH0_RECEIVED_LTK_REQUEST, 347 SM_RESPONDER_PH0_RECEIVED_LTK_W4_IRK, 348 SM_RESPONDER_PH0_SEND_LTK_REQUESTED_NEGATIVE_REPLY, 349 SM_RESPONDER_PH1_W4_PAIRING_REQUEST, 350 SM_RESPONDER_PH1_PAIRING_REQUEST_RECEIVED, 351 SM_RESPONDER_PH1_PAIRING_REQUEST_RECEIVED_W4_IRK, 352 SM_RESPONDER_PH1_SEND_PAIRING_RESPONSE, 353 SM_RESPONDER_PH1_W4_PAIRING_CONFIRM, 354 SM_RESPONDER_PH2_W4_PAIRING_RANDOM, 355 SM_RESPONDER_PH2_W4_LTK_REQUEST, 356 SM_RESPONDER_PH2_SEND_LTK_REPLY, 357 SM_RESPONDER_PH4_Y_W4_ENC, 358 SM_RESPONDER_PH4_SEND_LTK_REPLY, 359 360 // INITIATOR ROLE 361 SM_INITIATOR_CONNECTED, 362 SM_INITIATOR_PH1_W2_SEND_PAIRING_REQUEST, 363 SM_INITIATOR_PH1_W4_PAIRING_RESPONSE, 364 SM_INITIATOR_PH2_W4_PAIRING_CONFIRM, 365 SM_INITIATOR_PH2_W4_PAIRING_RANDOM, 366 SM_INITIATOR_PH3_SEND_START_ENCRYPTION, 367 SM_INITIATOR_PH4_HAS_LTK, 368 369 // LE Secure Connections 370 SM_SC_RECEIVED_LTK_REQUEST, 371 SM_SC_SEND_PUBLIC_KEY_COMMAND, 372 SM_SC_W4_PUBLIC_KEY_COMMAND, 373 SM_SC_W4_LOCAL_NONCE, 374 SM_SC_W2_CMAC_FOR_CONFIRMATION, 375 SM_SC_W4_CMAC_FOR_CONFIRMATION, 376 SM_SC_SEND_CONFIRMATION, 377 SM_SC_W2_CMAC_FOR_CHECK_CONFIRMATION, 378 SM_SC_W4_CMAC_FOR_CHECK_CONFIRMATION, 379 SM_SC_W4_CONFIRMATION, 380 SM_SC_SEND_PAIRING_RANDOM, 381 SM_SC_W4_PAIRING_RANDOM, 382 SM_SC_W2_CALCULATE_G2, 383 SM_SC_W4_CALCULATE_G2, 384 SM_SC_W4_CALCULATE_DHKEY, 385 SM_SC_W2_CALCULATE_F5_SALT, 386 SM_SC_W4_CALCULATE_F5_SALT, 387 SM_SC_W2_CALCULATE_F5_MACKEY, 388 SM_SC_W4_CALCULATE_F5_MACKEY, 389 SM_SC_W2_CALCULATE_F5_LTK, 390 SM_SC_W4_CALCULATE_F5_LTK, 391 SM_SC_W2_CALCULATE_F6_FOR_DHKEY_CHECK, 392 SM_SC_W4_CALCULATE_F6_FOR_DHKEY_CHECK, 393 SM_SC_W2_CALCULATE_F6_TO_VERIFY_DHKEY_CHECK, 394 SM_SC_W4_CALCULATE_F6_TO_VERIFY_DHKEY_CHECK, 395 SM_SC_W4_USER_RESPONSE, 396 SM_SC_SEND_DHKEY_CHECK_COMMAND, 397 SM_SC_W4_DHKEY_CHECK_COMMAND, 398 SM_SC_W4_LTK_REQUEST_SC, 399 SM_SC_W2_CALCULATE_ILK_USING_H6, 400 SM_SC_W2_CALCULATE_ILK_USING_H7, 401 SM_SC_W4_CALCULATE_ILK, 402 SM_SC_W2_CALCULATE_BR_EDR_LINK_KEY, 403 SM_SC_W4_CALCULATE_BR_EDR_LINK_KEY, 404 405 // Classic 406 SM_BR_EDR_W4_ENCRYPTION_COMPLETE, 407 SM_BR_EDR_INITIATOR_SEND_PAIRING_REQUEST, 408 SM_BR_EDR_INITIATOR_W4_PAIRING_RESPONSE, 409 SM_BR_EDR_RESPONDER_W4_PAIRING_REQUEST, 410 SM_BR_EDR_RESPONDER_PAIRING_REQUEST_RECEIVED, 411 SM_BR_EDR_DISTRIBUTE_KEYS, 412 SM_BR_EDR_RECEIVE_KEYS, 413 SM_BR_EDR_W2_CALCULATE_ILK_USING_H6, 414 SM_BR_EDR_W2_CALCULATE_ILK_USING_H7, 415 SM_BR_EDR_W4_CALCULATE_ILK, 416 SM_BR_EDR_W2_CALCULATE_LE_LTK, 417 SM_BR_EDR_W4_CALCULATE_LE_LTK, 418 } security_manager_state_t; 419 420 typedef enum { 421 IRK_LOOKUP_IDLE, 422 IRK_LOOKUP_W4_READY, 423 IRK_LOOKUP_STARTED, 424 IRK_LOOKUP_SUCCEEDED, 425 IRK_LOOKUP_FAILED 426 } irk_lookup_state_t; 427 428 typedef uint8_t sm_pairing_packet_t[7]; 429 430 // connection info available as long as connection exists 431 typedef struct sm_connection { 432 hci_con_handle_t sm_handle; 433 uint16_t sm_cid; 434 uint8_t sm_role; // 0 - IamMaster, 1 = IamSlave 435 uint8_t sm_security_request_received; 436 uint8_t sm_pairing_requested; 437 uint8_t sm_peer_addr_type; 438 bd_addr_t sm_peer_address; 439 uint8_t sm_own_addr_type; 440 bd_addr_t sm_own_address; 441 security_manager_state_t sm_engine_state; 442 irk_lookup_state_t sm_irk_lookup_state; 443 uint8_t sm_pairing_failed_reason; 444 uint8_t sm_connection_encrypted; 445 uint8_t sm_connection_authenticated; // [0..1] 446 uint8_t sm_connection_sc; 447 uint8_t sm_actual_encryption_key_size; 448 sm_pairing_packet_t sm_m_preq; // only used during c1 449 authorization_state_t sm_connection_authorization_state; 450 uint16_t sm_local_ediv; 451 uint8_t sm_local_rand[8]; 452 int sm_le_db_index; 453 bool sm_pairing_active; 454 bool sm_reencryption_active; 455 } sm_connection_t; 456 457 // 458 // ATT Server 459 // 460 461 // max ATT request matches L2CAP PDU -- allow to use smaller buffer 462 #ifndef ATT_REQUEST_BUFFER_SIZE 463 #define ATT_REQUEST_BUFFER_SIZE HCI_ACL_PAYLOAD_SIZE 464 #endif 465 466 typedef enum { 467 ATT_SERVER_IDLE, 468 ATT_SERVER_REQUEST_RECEIVED, 469 ATT_SERVER_W4_SIGNED_WRITE_VALIDATION, 470 ATT_SERVER_REQUEST_RECEIVED_AND_VALIDATED, 471 ATT_SERVER_RESPONSE_PENDING, 472 } att_server_state_t; 473 474 typedef struct { 475 att_server_state_t state; 476 477 uint8_t peer_addr_type; 478 bd_addr_t peer_address; 479 480 int ir_le_device_db_index; 481 uint8_t ir_lookup_active; 482 uint8_t pairing_active; 483 484 uint16_t value_indication_handle; 485 btstack_timer_source_t value_indication_timer; 486 487 btstack_linked_list_t notification_requests; 488 btstack_linked_list_t indication_requests; 489 490 #ifdef ENABLE_GATT_OVER_CLASSIC 491 uint16_t l2cap_cid; 492 #endif 493 494 uint16_t request_size; 495 uint8_t request_buffer[ATT_REQUEST_BUFFER_SIZE]; 496 497 } att_server_t; 498 499 #endif 500 501 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_W2_SEND_FIXED_CHANNELS_REQUEST, 506 L2CAP_INFORMATION_STATE_W4_FIXED_CHANNELS_RESPONSE, 507 L2CAP_INFORMATION_STATE_DONE 508 } l2cap_information_state_t; 509 510 typedef struct { 511 l2cap_information_state_t information_state; 512 uint16_t extended_feature_mask; 513 uint16_t fixed_channels_supported; // Core V5.3 - only first octet used 514 } l2cap_state_t; 515 516 // 517 typedef struct { 518 // linked list - assert: first field 519 btstack_linked_item_t item; 520 521 // remote side 522 bd_addr_t address; 523 524 // module handle 525 hci_con_handle_t con_handle; 526 527 // le public, le random, classic 528 bd_addr_type_t address_type; 529 530 // role: 0 - master, 1 - slave 531 uint8_t role; 532 533 // connection state 534 CONNECTION_STATE state; 535 536 // bonding 537 uint32_t bonding_flags; 538 uint8_t bonding_status; 539 540 // encryption key size (in octets) 541 uint8_t encryption_key_size; 542 543 // requested security level 544 gap_security_level_t requested_security_level; 545 546 // link key and its type 547 link_key_t link_key; 548 link_key_type_t link_key_type; 549 550 // remote supported features 551 /* bit 0 - eSCO */ 552 /* bit 1 - extended features */ 553 uint8_t remote_supported_features[1]; 554 555 #ifdef ENABLE_CLASSIC 556 // IO Capabilities Response 557 uint8_t io_cap_response_auth_req; 558 uint8_t io_cap_response_io; 559 #ifdef ENABLE_CLASSIC_PAIRING_OOB 560 uint8_t io_cap_response_oob_data; 561 #endif 562 563 // connection mode, default ACL_CONNECTION_MODE_ACTIVE 564 uint8_t connection_mode; 565 566 // enter/exit sniff mode requests 567 uint16_t sniff_min_interval; // 0: idle, 0xffff exit sniff, else enter sniff 568 uint16_t sniff_max_interval; 569 uint16_t sniff_attempt; 570 uint16_t sniff_timeout; 571 572 // sniff subrating 573 uint16_t sniff_subrating_max_latency; // 0xffff = not set 574 uint16_t sniff_subrating_min_remote_timeout; 575 uint16_t sniff_subrating_min_local_timeout; 576 577 // QoS 578 hci_service_type_t qos_service_type; 579 uint32_t qos_token_rate; 580 uint32_t qos_peak_bandwidth; 581 uint32_t qos_latency; 582 uint32_t qos_delay_variation; 583 584 #ifdef ENABLE_SCO_OVER_HCI 585 // track SCO rx event 586 uint32_t sco_rx_ms; 587 uint8_t sco_rx_count; 588 uint8_t sco_rx_valid; 589 #endif 590 // generate sco can send now based on received packets, using timeout below 591 uint8_t sco_tx_ready; 592 593 // request role switch 594 hci_role_t request_role; 595 596 btstack_timer_source_t timeout_sco; 597 #endif /* ENABLE_CLASSIC */ 598 599 // authentication and other errands 600 uint16_t authentication_flags; 601 602 // gap connection tasks, see GAP_CONNECTION_TASK_x 603 uint16_t gap_connection_tasks; 604 605 btstack_timer_source_t timeout; 606 607 // timeout in system ticks (HAVE_EMBEDDED_TICK) or milliseconds (HAVE_EMBEDDED_TIME_MS) 608 uint32_t timestamp; 609 610 // ACL packet recombination - PRE_BUFFER + ACL Header + ACL payload 611 uint8_t acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + 4 + HCI_ACL_BUFFER_SIZE]; 612 uint16_t acl_recombination_pos; 613 uint16_t acl_recombination_length; 614 615 616 // number packets sent to controller 617 uint8_t num_packets_sent; 618 619 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 620 uint8_t num_packets_completed; 621 #endif 622 623 // LE Connection parameter update 624 le_con_parameter_update_state_t le_con_parameter_update_state; 625 uint8_t le_con_param_update_identifier; 626 uint16_t le_conn_interval_min; 627 uint16_t le_conn_interval_max; 628 uint16_t le_conn_latency; 629 uint16_t le_supervision_timeout; 630 631 #ifdef ENABLE_BLE 632 uint16_t le_connection_interval; 633 634 // LE PHY Update via set phy command 635 uint8_t le_phy_update_all_phys; // 0xff for idle 636 uint8_t le_phy_update_tx_phys; 637 uint8_t le_phy_update_rx_phys; 638 int8_t le_phy_update_phy_options; 639 640 // LE Security Manager 641 sm_connection_t sm_connection; 642 643 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 644 uint16_t le_max_tx_octets; 645 #endif 646 647 // ATT Connection 648 att_connection_t att_connection; 649 650 // ATT Server 651 att_server_t att_server; 652 653 #endif 654 655 l2cap_state_t l2cap_state; 656 657 #ifdef ENABLE_CLASSIC_PAIRING_OOB 658 const uint8_t * classic_oob_c_192; 659 const uint8_t * classic_oob_r_192; 660 const uint8_t * classic_oob_c_256; 661 const uint8_t * classic_oob_r_256; 662 #endif 663 664 } hci_connection_t; 665 666 667 /** 668 * HCI Inititizlization State Machine 669 */ 670 typedef enum hci_init_state{ 671 HCI_INIT_SEND_RESET = 0, 672 HCI_INIT_W4_SEND_RESET, 673 HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION, 674 HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION, 675 676 #ifndef HAVE_HOST_CONTROLLER_API 677 HCI_INIT_SEND_READ_LOCAL_NAME, 678 HCI_INIT_W4_SEND_READ_LOCAL_NAME, 679 HCI_INIT_SEND_BAUD_CHANGE, 680 HCI_INIT_W4_SEND_BAUD_CHANGE, 681 HCI_INIT_CUSTOM_INIT, 682 HCI_INIT_W4_CUSTOM_INIT, 683 HCI_INIT_SEND_RESET_CSR_WARM_BOOT, 684 HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT, 685 HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET, 686 HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY, 687 #endif 688 689 HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS, 690 HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS, 691 692 HCI_INIT_SEND_BAUD_CHANGE_BCM, 693 HCI_INIT_W4_SEND_BAUD_CHANGE_BCM, 694 695 HCI_INIT_SET_BD_ADDR, 696 HCI_INIT_W4_SET_BD_ADDR, 697 698 HCI_INIT_SEND_RESET_ST_WARM_BOOT, 699 HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT, 700 701 HCI_INIT_READ_BD_ADDR, 702 HCI_INIT_W4_READ_BD_ADDR, 703 704 HCI_INIT_READ_BUFFER_SIZE, 705 HCI_INIT_W4_READ_BUFFER_SIZE, 706 HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES, 707 HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES, 708 709 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 710 HCI_INIT_HOST_BUFFER_SIZE, 711 HCI_INIT_W4_HOST_BUFFER_SIZE, 712 HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL, 713 HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL, 714 #endif 715 716 HCI_INIT_SET_EVENT_MASK, 717 HCI_INIT_W4_SET_EVENT_MASK, 718 HCI_INIT_SET_EVENT_MASK_2, 719 HCI_INIT_W4_SET_EVENT_MASK_2, 720 721 #ifdef ENABLE_CLASSIC 722 HCI_INIT_WRITE_SIMPLE_PAIRING_MODE, 723 HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE, 724 HCI_INIT_WRITE_INQUIRY_MODE, 725 HCI_INIT_W4_WRITE_INQUIRY_MODE, 726 HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE, 727 HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE, 728 HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE, 729 HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE, 730 731 #ifdef ENABLE_SCO_OVER_HCI 732 // SCO over HCI 733 HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, 734 HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, 735 HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 736 HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 737 #endif 738 739 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 740 // Broadcom SCO Routing and Configuration 741 HCI_INIT_BCM_WRITE_SCO_PCM_INT, 742 HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT, 743 #endif 744 #ifdef ENABLE_SCO_OVER_PCM 745 HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM, 746 HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM, 747 #endif 748 #endif 749 750 #ifdef ENABLE_BLE 751 HCI_INIT_LE_READ_BUFFER_SIZE, 752 HCI_INIT_W4_LE_READ_BUFFER_SIZE, 753 HCI_INIT_WRITE_LE_HOST_SUPPORTED, 754 HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED, 755 HCI_INIT_LE_SET_EVENT_MASK, 756 HCI_INIT_W4_LE_SET_EVENT_MASK, 757 #endif 758 759 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 760 HCI_INIT_LE_READ_MAX_DATA_LENGTH, 761 HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH, 762 HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH, 763 HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH, 764 #endif 765 766 #ifdef ENABLE_LE_CENTRAL 767 HCI_INIT_READ_WHITE_LIST_SIZE, 768 HCI_INIT_W4_READ_WHITE_LIST_SIZE, 769 #endif 770 771 #ifdef ENABLE_LE_PERIPHERAL 772 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 773 HCI_INIT_LE_READ_MAX_ADV_DATA_LEN, 774 HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN, 775 #endif 776 #endif 777 778 HCI_INIT_DONE, 779 780 HCI_FALLING_ASLEEP_DISCONNECT, 781 HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE, 782 HCI_FALLING_ASLEEP_COMPLETE, 783 784 HCI_INIT_AFTER_SLEEP, 785 786 HCI_HALTING_CLASSIC_STOP, 787 HCI_HALTING_LE_ADV_STOP, 788 HCI_HALTING_LE_SCAN_STOP, 789 HCI_HALTING_DISCONNECT_ALL, 790 HCI_HALTING_READY_FOR_CLOSE, 791 HCI_HALTING_DEFER_CLOSE, 792 HCI_HALTING_W4_CLOSE_TIMER, 793 HCI_HALTING_CLOSE, 794 795 } hci_substate_t; 796 797 #define GAP_TASK_SET_LOCAL_NAME 0x01 798 #define GAP_TASK_SET_EIR_DATA 0x02 799 #define GAP_TASK_SET_CLASS_OF_DEVICE 0x04 800 #define GAP_TASK_SET_DEFAULT_LINK_POLICY 0x08 801 #define GAP_TASK_WRITE_SCAN_ENABLE 0x10 802 #define GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY 0x20 803 #define GAP_TASK_WRITE_PAGE_SCAN_TYPE 0x40 804 #define GAP_TASK_WRITE_PAGE_TIMEOUT 0x80 805 #define GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY 0x100 806 807 enum { 808 // Tasks 809 LE_ADVERTISEMENT_TASKS_SET_ADV_DATA = 1 << 0, 810 LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA = 1 << 1, 811 LE_ADVERTISEMENT_TASKS_SET_PARAMS = 1 << 2, 812 LE_ADVERTISEMENT_TASKS_SET_ADDRESS = 1 << 3, 813 LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS = 1 << 4, 814 LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA = 1 << 5, 815 LE_ADVERTISEMENT_TASKS_REMOVE_SET = 1 << 6, 816 }; 817 818 enum { 819 // State 820 LE_ADVERTISEMENT_STATE_PARAMS_SET = 1 << 0, 821 LE_ADVERTISEMENT_STATE_ACTIVE = 1 << 1, 822 LE_ADVERTISEMENT_STATE_ENABLED = 1 << 2, 823 LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE = 1 << 3, 824 LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED = 1 << 4, 825 }; 826 827 enum { 828 LE_WHITELIST_ON_CONTROLLER = 1 << 0, 829 LE_WHITELIST_ADD_TO_CONTROLLER = 1 << 1, 830 LE_WHITELIST_REMOVE_FROM_CONTROLLER = 1 << 2, 831 }; 832 833 enum { 834 LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER = 1 << 0, 835 LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER = 1 << 1, 836 LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER = 1 << 2, 837 }; 838 839 typedef struct { 840 btstack_linked_item_t item; 841 bd_addr_t address; 842 bd_addr_type_t address_type; 843 uint8_t state; 844 } whitelist_entry_t; 845 846 typedef struct { 847 btstack_linked_item_t item; 848 bd_addr_t address; 849 bd_addr_type_t address_type; 850 uint8_t sid; 851 uint8_t state; 852 } periodic_advertiser_list_entry_t; 853 854 #define MAX_NUM_RESOLVING_LIST_ENTRIES 64 855 typedef enum { 856 LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION, 857 LE_RESOLVING_LIST_READ_SIZE, 858 LE_RESOLVING_LIST_SEND_CLEAR, 859 LE_RESOLVING_LIST_REMOVE_ENTRIES, 860 LE_RESOLVING_LIST_ADD_ENTRIES, 861 LE_RESOLVING_LIST_DONE 862 } le_resolving_list_state_t; 863 864 /** 865 * main data structure 866 */ 867 typedef struct { 868 // transport component with configuration 869 const hci_transport_t * hci_transport; 870 const void * config; 871 872 // chipset driver 873 const btstack_chipset_t * chipset; 874 875 // hardware power controller 876 const btstack_control_t * control; 877 878 #ifdef ENABLE_CLASSIC 879 /* link key db */ 880 const btstack_link_key_db_t * link_key_db; 881 #endif 882 883 // list of existing baseband connections 884 btstack_linked_list_t connections; 885 886 /* callback to L2CAP layer */ 887 btstack_packet_handler_t acl_packet_handler; 888 889 /* callback for SCO data */ 890 btstack_packet_handler_t sco_packet_handler; 891 892 /* callbacks for events */ 893 btstack_linked_list_t event_handlers; 894 895 #ifdef ENABLE_CLASSIC 896 /* callback for reject classic connection */ 897 int (*gap_classic_accept_callback)(bd_addr_t addr, hci_link_type_t link_type); 898 #endif 899 900 // hardware error callback 901 void (*hardware_error_callback)(uint8_t error); 902 903 // basic configuration 904 const char * local_name; 905 const uint8_t * eir_data; 906 uint32_t class_of_device; 907 bd_addr_t local_bd_addr; 908 uint8_t default_link_policy_settings; 909 uint8_t allow_role_switch; 910 uint8_t ssp_enable; 911 uint8_t ssp_io_capability; 912 uint8_t ssp_authentication_requirement; 913 uint8_t ssp_auto_accept; 914 bool secure_connections_enable; 915 bool secure_connections_active; 916 inquiry_mode_t inquiry_mode; 917 918 #ifdef ENABLE_CLASSIC 919 /* GAP tasks, see GAP_TASK_* */ 920 uint16_t gap_tasks_classic; 921 922 /* write page scan activity */ 923 uint16_t new_page_scan_interval; 924 uint16_t new_page_scan_window; 925 926 /* write page scan type */ 927 uint8_t new_page_scan_type; 928 929 /* write page timeout */ 930 uint16_t page_timeout; 931 932 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3, we use 16 as default 933 uint8_t gap_required_encyrption_key_size; 934 935 uint16_t link_supervision_timeout; 936 uint16_t automatic_flush_timeout; 937 938 gap_security_level_t gap_security_level; 939 gap_security_level_t gap_minimal_service_security_level; 940 gap_security_mode_t gap_security_mode; 941 942 uint32_t inquiry_lap; // GAP_IAC_GENERAL_INQUIRY or GAP_IAC_LIMITED_INQUIRY 943 uint16_t inquiry_scan_interval; 944 uint16_t inquiry_scan_window; 945 946 bool gap_secure_connections_only_mode; 947 #endif 948 949 // single buffer for HCI packet assembly + additional prebuffer for H4 drivers 950 uint8_t * hci_packet_buffer; 951 uint8_t hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE + HCI_OUTGOING_PACKET_BUFFER_SIZE]; 952 bool hci_packet_buffer_reserved; 953 uint16_t acl_fragmentation_pos; 954 uint16_t acl_fragmentation_total_size; 955 uint8_t acl_fragmentation_tx_active; 956 957 /* host to controller flow control */ 958 uint8_t num_cmd_packets; 959 uint8_t acl_packets_total_num; 960 uint16_t acl_data_packet_length; 961 uint8_t sco_packets_total_num; 962 uint8_t sco_data_packet_length; 963 uint8_t synchronous_flow_control_enabled; 964 uint8_t le_acl_packets_total_num; 965 uint16_t le_data_packets_length; 966 uint8_t le_iso_packets_total_num; 967 uint16_t le_iso_packets_length; 968 uint8_t sco_waiting_for_can_send_now; 969 bool sco_can_send_now; 970 971 /* local supported features */ 972 uint8_t local_supported_features[8]; 973 974 /* local supported commands summary - complete info is 64 bytes */ 975 uint32_t local_supported_commands; 976 977 /* bluetooth device information from hci read local version information */ 978 // uint16_t hci_version; 979 // uint16_t hci_revision; 980 // uint16_t lmp_version; 981 uint16_t manufacturer; 982 // uint16_t lmp_subversion; 983 984 // usable packet types given acl_data_packet_length and HCI_ACL_BUFFER_SIZE 985 uint16_t packet_types; 986 987 988 /* hci state machine */ 989 HCI_STATE state; 990 hci_substate_t substate; 991 btstack_timer_source_t timeout; 992 btstack_chipset_result_t chipset_result; 993 994 uint16_t last_cmd_opcode; 995 996 uint8_t cmds_ready; 997 998 /* buffer for scan enable cmd - 0xff no change */ 999 uint8_t new_scan_enable_value; 1000 1001 uint8_t discoverable; 1002 uint8_t connectable; 1003 uint8_t bondable; 1004 1005 uint8_t inquiry_state; // see hci.c for state defines 1006 1007 bd_addr_t remote_name_addr; 1008 uint16_t remote_name_clock_offset; 1009 uint8_t remote_name_page_scan_repetition_mode; 1010 uint8_t remote_name_state; // see hci.c for state defines 1011 1012 bd_addr_t gap_pairing_addr; 1013 uint8_t gap_pairing_state; // see hci.c for state defines 1014 uint8_t gap_pairing_pin_len; 1015 union { 1016 const uint8_t * gap_pairing_pin; 1017 uint32_t gap_pairing_passkey; 1018 } gap_pairing_input; 1019 1020 uint16_t sco_voice_setting; 1021 uint16_t sco_voice_setting_active; 1022 1023 uint8_t loopback_mode; 1024 1025 // buffer for single connection decline 1026 uint8_t decline_reason; 1027 bd_addr_t decline_addr; 1028 1029 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1030 uint8_t host_completed_packets; 1031 #endif 1032 1033 #ifdef ENABLE_BLE 1034 uint8_t le_own_addr_type; 1035 bd_addr_t le_random_address; 1036 uint8_t le_random_address_set; 1037 1038 // LE Whitelist Management 1039 uint8_t le_whitelist_capacity; 1040 btstack_linked_list_t le_whitelist; 1041 #endif 1042 1043 #ifdef ENABLE_LE_CENTRAL 1044 bool le_scanning_enabled; 1045 bool le_scanning_active; 1046 1047 le_connecting_state_t le_connecting_state; 1048 le_connecting_state_t le_connecting_request; 1049 1050 bool le_scanning_param_update; 1051 uint8_t le_scan_type; 1052 uint8_t le_scan_filter_policy; 1053 uint16_t le_scan_interval; 1054 uint16_t le_scan_window; 1055 1056 // Connection parameters 1057 uint16_t le_connection_interval_min; 1058 uint16_t le_connection_interval_max; 1059 uint16_t le_connection_latency; 1060 uint16_t le_supervision_timeout; 1061 uint16_t le_minimum_ce_length; 1062 uint16_t le_maximum_ce_length; 1063 uint16_t le_connection_scan_interval; 1064 uint16_t le_connection_scan_window; 1065 uint8_t le_connection_own_addr_type; 1066 bd_addr_t le_connection_own_address; 1067 #endif 1068 1069 le_connection_parameter_range_t le_connection_parameter_range; 1070 1071 #ifdef ENABLE_LE_PERIPHERAL 1072 uint8_t * le_advertisements_data; 1073 uint8_t le_advertisements_data_len; 1074 1075 uint8_t * le_scan_response_data; 1076 uint8_t le_scan_response_data_len; 1077 1078 uint16_t le_advertisements_interval_min; 1079 uint16_t le_advertisements_interval_max; 1080 uint8_t le_advertisements_type; 1081 uint8_t le_advertisements_direct_address_type; 1082 uint8_t le_advertisements_channel_map; 1083 uint8_t le_advertisements_filter_policy; 1084 bd_addr_t le_advertisements_direct_address; 1085 uint8_t le_advertisements_own_addr_type; 1086 bd_addr_t le_advertisements_own_address; 1087 1088 uint8_t le_advertisements_todo; 1089 uint8_t le_advertisements_state; 1090 1091 bool le_advertisements_enabled_for_current_roles; 1092 uint8_t le_max_number_peripheral_connections; 1093 1094 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1095 btstack_linked_list_t le_advertising_sets; 1096 uint16_t le_maximum_advertising_data_length; 1097 uint8_t le_advertising_set_in_current_command; 1098 #endif 1099 #endif 1100 1101 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 1102 // LE Data Length 1103 uint16_t le_supported_max_tx_octets; 1104 uint16_t le_supported_max_tx_time; 1105 #endif 1106 1107 // custom BD ADDR 1108 bd_addr_t custom_bd_addr; 1109 uint8_t custom_bd_addr_set; 1110 1111 #ifdef ENABLE_CLASSIC 1112 uint8_t master_slave_policy; 1113 #endif 1114 1115 // address and address_type of active create connection command (ACL, SCO, LE) 1116 bd_addr_t outgoing_addr; 1117 bd_addr_type_t outgoing_addr_type; 1118 1119 // LE Resolving List 1120 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 1121 le_resolving_list_state_t le_resolving_list_state; 1122 uint16_t le_resolving_list_size; 1123 uint8_t le_resolving_list_add_entries[(MAX_NUM_RESOLVING_LIST_ENTRIES + 7) / 8]; 1124 uint8_t le_resolving_list_remove_entries[(MAX_NUM_RESOLVING_LIST_ENTRIES + 7) / 8]; 1125 #endif 1126 1127 #ifdef ENABLE_CLASSIC_PAIRING_OOB 1128 bool classic_read_local_oob_data; 1129 hci_con_handle_t classic_oob_con_handle; 1130 #endif 1131 1132 #ifdef HAVE_SCO_TRANSPORT 1133 const btstack_sco_transport_t * sco_transport; 1134 #endif 1135 } hci_stack_t; 1136 1137 1138 /* API_START */ 1139 1140 1141 // HCI init and configuration 1142 1143 1144 /** 1145 * @brief Set up HCI. Needs to be called before any other function. 1146 */ 1147 void hci_init(const hci_transport_t *transport, const void *config); 1148 1149 /** 1150 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information. 1151 */ 1152 void hci_set_chipset(const btstack_chipset_t *chipset_driver); 1153 1154 /** 1155 * @brief Configure Bluetooth hardware control. Has to be called before power on. 1156 * @[aram hardware_control implementation 1157 */ 1158 void hci_set_control(const btstack_control_t *hardware_control); 1159 1160 #ifdef HAVE_SCO_TRANSPORT 1161 /** 1162 * @brief Set SCO Transport implementation for SCO over PCM mode 1163 * @param sco_transport that sends SCO over I2S or PCM interface 1164 */ 1165 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport); 1166 #endif 1167 1168 #ifdef ENABLE_CLASSIC 1169 /** 1170 * @brief Configure Bluetooth hardware control. Has to be called before power on. 1171 */ 1172 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db); 1173 #endif 1174 1175 /** 1176 * @brief Set callback for Bluetooth Hardware Error 1177 */ 1178 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)); 1179 1180 /** 1181 * @brief Set Public BD ADDR - passed on to Bluetooth chipset during init if supported in bt_control_h 1182 */ 1183 void hci_set_bd_addr(bd_addr_t addr); 1184 1185 /** 1186 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 1187 */ 1188 void hci_set_sco_voice_setting(uint16_t voice_setting); 1189 1190 /** 1191 * @brief Get SCO Voice Setting 1192 * @return current voice setting 1193 */ 1194 uint16_t hci_get_sco_voice_setting(void); 1195 1196 /** 1197 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 1198 * @param inquriy_mode see bluetooth_defines.h 1199 */ 1200 void hci_set_inquiry_mode(inquiry_mode_t inquriy_mode); 1201 1202 /** 1203 * @brief Requests the change of BTstack power mode. 1204 * @param power_mode 1205 * @return 0 if success, otherwise error 1206 */ 1207 int hci_power_control(HCI_POWER_MODE power_mode); 1208 1209 /** 1210 * @brief Shutdown HCI 1211 */ 1212 void hci_close(void); 1213 1214 1215 // Callback registration 1216 1217 1218 /** 1219 * @brief Add event packet handler. 1220 */ 1221 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler); 1222 1223 /** 1224 * @brief Remove event packet handler. 1225 */ 1226 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler); 1227 1228 /** 1229 * @brief Registers a packet handler for ACL data. Used by L2CAP 1230 */ 1231 void hci_register_acl_packet_handler(btstack_packet_handler_t handler); 1232 1233 /** 1234 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 1235 */ 1236 void hci_register_sco_packet_handler(btstack_packet_handler_t handler); 1237 1238 1239 // Sending HCI Commands 1240 1241 /** 1242 * @brief Check if CMD packet can be sent to controller 1243 * @return true if command can be sent 1244 */ 1245 bool hci_can_send_command_packet_now(void); 1246 1247 /** 1248 * @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. 1249 * @return status 1250 */ 1251 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...); 1252 1253 1254 // Sending SCO Packets 1255 1256 /** @brief Get SCO packet length for current SCO Voice setting 1257 * @note Using SCO packets of the exact length is required for USB transfer 1258 * @return Length of SCO packets in bytes (not audio frames) incl. 3 byte header 1259 */ 1260 uint16_t hci_get_sco_packet_length(void); 1261 1262 /** 1263 * @brief Request emission of HCI_EVENT_SCO_CAN_SEND_NOW as soon as possible 1264 * @note HCI_EVENT_SCO_CAN_SEND_NOW might be emitted during call to this function 1265 * so packet handler should be ready to handle it 1266 */ 1267 void hci_request_sco_can_send_now_event(void); 1268 1269 /** 1270 * @brief Check HCI packet buffer and if SCO packet can be sent to controller 1271 * @return true if sco packet can be sent 1272 */ 1273 bool hci_can_send_sco_packet_now(void); 1274 1275 /** 1276 * @brief Check if SCO packet can be sent to controller 1277 * @return true if sco packet can be sent 1278 */ 1279 bool hci_can_send_prepared_sco_packet_now(void); 1280 1281 /** 1282 * @brief Send SCO packet prepared in HCI packet buffer 1283 */ 1284 uint8_t hci_send_sco_packet_buffer(int size); 1285 1286 /** 1287 * Reserves outgoing packet buffer. 1288 * @return true on success 1289 */ 1290 bool hci_reserve_packet_buffer(void); 1291 1292 /** 1293 * Get pointer for outgoing packet buffer 1294 */ 1295 uint8_t* hci_get_outgoing_packet_buffer(void); 1296 1297 /** 1298 * Release outgoing packet buffer\ 1299 * @note only called instead of hci_send_preparared 1300 */ 1301 void hci_release_packet_buffer(void); 1302 1303 /** 1304 * @brief Sets the master/slave policy 1305 * @param policy (0: attempt to become master, 1: let connecting device decide) 1306 */ 1307 void hci_set_master_slave_policy(uint8_t policy); 1308 1309 /* API_END */ 1310 1311 1312 /** 1313 * va_list version of hci_send_cmd, call hci_send_cmd_packet 1314 * @return status 1315 */ 1316 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr); 1317 1318 /** 1319 * Get connection iterator. Only used by l2cap.c and sm.c 1320 */ 1321 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it); 1322 1323 /** 1324 * Get internal hci_connection_t for given handle. Used by L2CAP, SM, daemon 1325 */ 1326 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle); 1327 1328 /** 1329 * Get internal hci_connection_t for given Bluetooth addres. Called by L2CAP 1330 */ 1331 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type); 1332 1333 /** 1334 * Check if outgoing packet buffer is reserved. Used for internal checks in l2cap.c 1335 * @return true if packet buffer is reserved 1336 */ 1337 bool hci_is_packet_buffer_reserved(void); 1338 1339 /** 1340 * Check hci packet buffer is free and a classic acl packet can be sent to controller 1341 * @return true if ACL Classic packet can be sent now 1342 */ 1343 bool hci_can_send_acl_classic_packet_now(void); 1344 1345 /** 1346 * Check hci packet buffer is free and an LE acl packet can be sent to controller 1347 * @return true if ACL LE packet can be sent now 1348 */ 1349 bool hci_can_send_acl_le_packet_now(void); 1350 1351 /** 1352 * Check hci packet buffer is free and an acl packet for the given handle can be sent to controller 1353 * @return true if ACL packet for con_handle can be sent now 1354 */ 1355 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle); 1356 1357 /** 1358 * Check if acl packet for the given handle can be sent to controller 1359 * @return true if ACL packet for con_handle can be sent now 1360 */ 1361 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle); 1362 1363 /** 1364 * Send acl packet prepared in hci packet buffer 1365 * @return status 1366 */ 1367 uint8_t hci_send_acl_packet_buffer(int size); 1368 1369 /** 1370 * Check if authentication is active. It delays automatic disconnect while no L2CAP connection 1371 * Called by l2cap. 1372 */ 1373 bool hci_authentication_active_for_handle(hci_con_handle_t handle); 1374 1375 /** 1376 * Get maximal ACL Classic data packet length based on used buffer size. Called by L2CAP 1377 */ 1378 uint16_t hci_max_acl_data_packet_length(void); 1379 1380 /** 1381 * Get supported packet types. Called by L2CAP 1382 */ 1383 uint16_t hci_usable_acl_packet_types(void); 1384 1385 /** 1386 * Check if ACL packets marked as non flushable can be sent. Called by L2CAP 1387 */ 1388 bool hci_non_flushable_packet_boundary_flag_supported(void); 1389 1390 /** 1391 * Return current automatic flush timeout setting 1392 */ 1393 uint16_t hci_automatic_flush_timeout(void); 1394 1395 /** 1396 * Check if remote supported features query has completed 1397 */ 1398 bool hci_remote_features_available(hci_con_handle_t con_handle); 1399 1400 /** 1401 * Trigger remote supported features query 1402 */ 1403 void hci_remote_features_query(hci_con_handle_t con_handle); 1404 1405 /** 1406 * Check if extended SCO Link is supported 1407 */ 1408 bool hci_extended_sco_link_supported(void); 1409 1410 /** 1411 * Check if SSP is supported on both sides. Called by L2CAP 1412 */ 1413 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle); 1414 1415 /** 1416 * Disconn because of security block. Called by L2CAP 1417 */ 1418 void hci_disconnect_security_block(hci_con_handle_t con_handle); 1419 1420 /** 1421 * Query if remote side supports eSCO 1422 */ 1423 bool hci_remote_esco_supported(hci_con_handle_t con_handle); 1424 1425 /** 1426 * Emit current HCI state. Called by daemon 1427 */ 1428 void hci_emit_state(void); 1429 1430 /** 1431 * Send complete CMD packet. Called by daemon and hci_send_cmd_va_arg 1432 * @return status 1433 */ 1434 uint8_t hci_send_cmd_packet(uint8_t *packet, int size); 1435 1436 /** 1437 * Disconnect all HCI connections. Called by daemon 1438 */ 1439 void hci_disconnect_all(void); 1440 1441 /** 1442 * Get number of free acl slots for packets of given handle. Called by daemon 1443 */ 1444 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle); 1445 1446 /** 1447 * @brief Set Advertisement Parameters 1448 * @param adv_int_min 1449 * @param adv_int_max 1450 * @param adv_type 1451 * @param direct_address_type 1452 * @param direct_address 1453 * @param channel_map 1454 * @param filter_policy 1455 * 1456 * @note internal use. use gap_advertisements_set_params from gap.h instead. 1457 */ 1458 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 1459 uint8_t direct_address_typ, bd_addr_t direct_address, uint8_t channel_map, uint8_t filter_policy); 1460 1461 /** 1462 * 1463 * @note internal use. use gap_random_address_set_mode from gap.h instead. 1464 */ 1465 void hci_le_set_own_address_type(uint8_t own_address_type); 1466 1467 /** 1468 * @naote internal use. use gap_random_address_set from gap.h instead 1469 */ 1470 void hci_le_random_address_set(const bd_addr_t random_address); 1471 1472 /** 1473 * @note internal use by sm 1474 */ 1475 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index); 1476 1477 /** 1478 * @note internal use by sm 1479 */ 1480 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index); 1481 1482 /** 1483 * @note internal use 1484 */ 1485 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type); 1486 1487 /** 1488 * @brief Get Manufactured 1489 * @return manufacturer id 1490 */ 1491 uint16_t hci_get_manufacturer(void); 1492 1493 /** 1494 * Defer halt. Used by btstack_crypto to allow current HCI operation to complete 1495 */ 1496 void hci_halting_defer(void); 1497 1498 // Only for PTS testing 1499 1500 /** 1501 * Disable automatic L2CAP disconnect if no L2CAP connection is established 1502 */ 1503 void hci_disable_l2cap_timeout_check(void); 1504 1505 /** 1506 * Get Classic Allow Role Switch param 1507 */ 1508 uint8_t hci_get_allow_role_switch(void); 1509 1510 /** 1511 * Get state 1512 */ 1513 HCI_STATE hci_get_state(void); 1514 1515 /** 1516 * @brief De-Init HCI 1517 */ 1518 void hci_deinit(void); 1519 1520 // setup test connections, used for fuzzing 1521 void hci_setup_test_connections_fuzz(void); 1522 1523 // free all connections, used for fuzzing 1524 void hci_free_connections_fuzz(void); 1525 1526 // simulate stack bootup 1527 void hci_simulate_working_fuzz(void); 1528 1529 1530 #if defined __cplusplus 1531 } 1532 #endif 1533 1534 #endif // HCI_H 1535