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 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 6) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES , 27, 5) \ 171 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 172 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 173 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 174 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 175 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 176 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 178 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 5) \ 179 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 180 X( SUPPORTED_HCI_COMMAND_LE_SET_HOST_FEATURE_V1 , 44, 1) \ 181 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 182 183 // enumerate supported commands 184 #define X(name, offset, bit) name, 185 enum { 186 SUPPORTED_HCI_COMMANDS 187 SUPPORTED_HCI_COMMANDS_COUNT 188 }; 189 #undef X 190 191 // prototypes 192 #ifdef ENABLE_CLASSIC 193 static void hci_update_scan_enable(void); 194 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 195 static int hci_local_ssp_activated(void); 196 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 197 static bool hci_ssp_supported(hci_connection_t * connection); 198 static void hci_notify_if_sco_can_send_now(void); 199 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 200 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 201 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 202 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 203 static void hci_connection_timestamp(hci_connection_t *connection); 204 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 205 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 206 #endif 207 208 static int hci_power_control_on(void); 209 static void hci_power_control_off(void); 210 static void hci_state_reset(void); 211 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 212 static void hci_emit_transport_packet_sent(void); 213 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 214 static void hci_emit_nr_connections_changed(void); 215 static void hci_emit_hci_open_failed(void); 216 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 217 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 218 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump); 219 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 220 static void hci_run(void); 221 static bool hci_is_le_connection(hci_connection_t * connection); 222 static uint8_t hci_send_prepared_cmd_packet(void); 223 224 #ifdef ENABLE_CLASSIC 225 static int hci_have_usb_transport(void); 226 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 227 #endif 228 229 #ifdef ENABLE_BLE 230 static bool hci_run_general_gap_le(void); 231 static void gap_privacy_clients_handle_ready(void); 232 static void gap_privacy_clients_notify(bd_addr_t new_random_address); 233 #ifdef ENABLE_LE_CENTRAL 234 // called from test/ble_client/advertising_data_parser.c 235 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 236 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 237 static hci_connection_t * gap_get_outgoing_le_connection(void); 238 static void hci_le_scan_stop(void); 239 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 240 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size); 241 #endif 242 #endif 243 #ifdef ENABLE_LE_PERIPHERAL 244 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 245 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 246 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len); 247 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 248 #endif /* ENABLE_LE_PERIPHERAL */ 249 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 250 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 251 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 252 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 253 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 254 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 255 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 256 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 257 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 258 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 259 static void hci_iso_notify_can_send_now(void); 260 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 261 static void hci_emit_big_terminated(const le_audio_big_t * big); 262 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 263 static void hci_emit_big_sync_stopped(uint8_t big_handle); 264 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 265 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 266 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 267 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 268 #endif /* ENABLE_BLE */ 269 270 // the STACK is here 271 #ifndef HAVE_MALLOC 272 static hci_stack_t hci_stack_static; 273 #endif 274 static hci_stack_t * hci_stack = NULL; 275 276 #ifdef ENABLE_CLASSIC 277 // default name 278 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 279 280 // test helper 281 static uint8_t disable_l2cap_timeouts = 0; 282 #endif 283 284 // reset connection state on create and on reconnect 285 // don't overwrite addr, con handle, role 286 static void hci_connection_init(hci_connection_t * conn){ 287 conn->authentication_flags = AUTH_FLAG_NONE; 288 conn->bonding_flags = 0; 289 conn->requested_security_level = LEVEL_0; 290 conn->link_key_type = INVALID_LINK_KEY; 291 #ifdef ENABLE_CLASSIC 292 conn->request_role = HCI_ROLE_INVALID; 293 conn->sniff_subrating_max_latency = 0xffff; 294 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 295 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 296 btstack_run_loop_set_timer_context(&conn->timeout, conn); 297 hci_connection_timestamp(conn); 298 #endif 299 conn->acl_recombination_length = 0; 300 conn->acl_recombination_pos = 0; 301 conn->num_packets_sent = 0; 302 303 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 304 #ifdef ENABLE_BLE 305 conn->le_phy_update_all_phys = 0xff; 306 #endif 307 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 308 conn->le_max_tx_octets = 27; 309 #endif 310 #ifdef ENABLE_CLASSIC_PAIRING_OOB 311 conn->classic_oob_c_192 = NULL; 312 conn->classic_oob_r_192 = NULL; 313 conn->classic_oob_c_256 = NULL; 314 conn->classic_oob_r_256 = NULL; 315 #endif 316 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 317 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 318 conn->le_past_advertising_handle = 0xff; 319 #endif 320 } 321 322 /** 323 * create connection for given address 324 * 325 * @return connection OR NULL, if no memory left 326 */ 327 static hci_connection_t * 328 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 329 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 330 331 hci_connection_t * conn = btstack_memory_hci_connection_get(); 332 if (!conn) return NULL; 333 hci_connection_init(conn); 334 335 bd_addr_copy(conn->address, addr); 336 conn->address_type = addr_type; 337 conn->con_handle = HCI_CON_HANDLE_INVALID; 338 conn->role = role; 339 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 340 341 return conn; 342 } 343 344 345 /** 346 * get le connection parameter range 347 * 348 * @return le connection parameter range struct 349 */ 350 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 351 *range = hci_stack->le_connection_parameter_range; 352 } 353 354 /** 355 * set le connection parameter range 356 * 357 */ 358 359 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 360 hci_stack->le_connection_parameter_range = *range; 361 } 362 363 /** 364 * @brief Test if connection parameters are inside in existing rage 365 * @param conn_interval_min (unit: 1.25ms) 366 * @param conn_interval_max (unit: 1.25ms) 367 * @param conn_latency 368 * @param supervision_timeout (unit: 10ms) 369 * @return 1 if included 370 */ 371 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 372 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 373 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 374 375 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 376 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 377 378 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 379 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 380 381 return 1; 382 } 383 384 /** 385 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 386 * @note: default: 1 387 * @param max_peripheral_connections 388 */ 389 #ifdef ENABLE_LE_PERIPHERAL 390 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 391 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 392 } 393 #endif 394 395 /** 396 * get hci connections iterator 397 * 398 * @return hci connections iterator 399 */ 400 401 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 402 btstack_linked_list_iterator_init(it, &hci_stack->connections); 403 } 404 405 /** 406 * get connection for a given handle 407 * 408 * @return connection OR NULL, if not found 409 */ 410 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 411 btstack_linked_list_iterator_t it; 412 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 413 while (btstack_linked_list_iterator_has_next(&it)){ 414 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 415 if ( item->con_handle == con_handle ) { 416 return item; 417 } 418 } 419 return NULL; 420 } 421 422 /** 423 * get connection for given address 424 * 425 * @return connection OR NULL, if not found 426 */ 427 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 428 btstack_linked_list_iterator_t it; 429 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 430 while (btstack_linked_list_iterator_has_next(&it)){ 431 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 432 if (connection->address_type != addr_type) continue; 433 if (memcmp(addr, connection->address, 6) != 0) continue; 434 return connection; 435 } 436 return NULL; 437 } 438 439 #ifdef ENABLE_CLASSIC 440 441 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 442 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 443 } 444 445 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 446 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 447 } 448 449 #ifdef ENABLE_SCO_OVER_HCI 450 static int hci_number_sco_connections(void){ 451 int connections = 0; 452 btstack_linked_list_iterator_t it; 453 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 454 while (btstack_linked_list_iterator_has_next(&it)){ 455 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 456 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 457 connections++; 458 } 459 return connections; 460 } 461 #endif 462 463 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 464 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 465 #ifdef HAVE_EMBEDDED_TICK 466 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 467 // connections might be timed out 468 hci_emit_l2cap_check_timeout(connection); 469 } 470 #else 471 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 472 // connections might be timed out 473 hci_emit_l2cap_check_timeout(connection); 474 } 475 #endif 476 } 477 478 static void hci_connection_timestamp(hci_connection_t *connection){ 479 #ifdef HAVE_EMBEDDED_TICK 480 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 481 #else 482 connection->timestamp = btstack_run_loop_get_time_ms(); 483 #endif 484 } 485 486 /** 487 * add authentication flags and reset timer 488 * @note: assumes classic connection 489 * @note: bd_addr is passed in as little endian uint8_t * as it is called from parsing packets 490 */ 491 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 492 bd_addr_t addr; 493 reverse_bd_addr(bd_addr, addr); 494 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 495 if (conn) { 496 connectionSetAuthenticationFlags(conn, flags); 497 hci_connection_timestamp(conn); 498 } 499 } 500 501 static bool hci_pairing_active(hci_connection_t * hci_connection){ 502 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 503 } 504 505 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 506 if (hci_pairing_active(hci_connection)) return; 507 if (ssp){ 508 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 509 } else { 510 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 511 } 512 // if we are initiator, we have sent an HCI Authenticate Request 513 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 514 515 // if we are responder, use minimal service security level as required level 516 if (!initiator){ 517 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 518 } 519 520 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 521 522 uint8_t event[12]; 523 event[0] = GAP_EVENT_PAIRING_STARTED; 524 event[1] = 10; 525 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 526 reverse_bd_addr(hci_connection->address, &event[4]); 527 event[10] = (uint8_t) ssp; 528 event[11] = (uint8_t) initiator; 529 hci_emit_btstack_event(event, sizeof(event), 1); 530 } 531 532 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 533 hci_connection->requested_security_level = LEVEL_0; 534 if (!hci_pairing_active(hci_connection)) return; 535 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 536 #ifdef ENABLE_CLASSIC_PAIRING_OOB 537 hci_connection->classic_oob_c_192 = NULL; 538 hci_connection->classic_oob_r_192 = NULL; 539 hci_connection->classic_oob_c_256 = NULL; 540 hci_connection->classic_oob_r_256 = NULL; 541 #endif 542 log_info("pairing complete, status %02x", status); 543 544 uint8_t event[11]; 545 event[0] = GAP_EVENT_PAIRING_COMPLETE; 546 event[1] = 9; 547 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 548 reverse_bd_addr(hci_connection->address, &event[4]); 549 event[10] = status; 550 hci_emit_btstack_event(event, sizeof(event), 1); 551 552 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 553 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 554 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 555 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 556 hci_connection->bonding_status = status; 557 } 558 } 559 560 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 561 hci_connection_t * conn = hci_connection_for_handle(handle); 562 if (!conn) return false; 563 return hci_pairing_active(conn); 564 } 565 566 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 567 if (!hci_stack->link_key_db) return; 568 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 569 hci_stack->link_key_db->delete_link_key(addr); 570 } 571 572 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 573 if (!hci_stack->link_key_db) return; 574 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 575 hci_stack->link_key_db->put_link_key(addr, link_key, type); 576 } 577 578 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 579 if (!hci_stack->link_key_db) return false; 580 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 581 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 582 return result; 583 } 584 585 void gap_delete_all_link_keys(void){ 586 bd_addr_t addr; 587 link_key_t link_key; 588 link_key_type_t type; 589 btstack_link_key_iterator_t it; 590 int ok = gap_link_key_iterator_init(&it); 591 if (!ok) { 592 log_error("could not initialize iterator"); 593 return; 594 } 595 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 596 gap_drop_link_key_for_bd_addr(addr); 597 } 598 gap_link_key_iterator_done(&it); 599 } 600 601 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 602 if (!hci_stack->link_key_db) return 0; 603 if (!hci_stack->link_key_db->iterator_init) return 0; 604 return hci_stack->link_key_db->iterator_init(it); 605 } 606 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 607 if (!hci_stack->link_key_db) return 0; 608 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 609 } 610 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 611 if (!hci_stack->link_key_db) return; 612 hci_stack->link_key_db->iterator_done(it); 613 } 614 #endif 615 616 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 617 switch (address_type){ 618 case BD_ADDR_TYPE_LE_PUBLIC: 619 case BD_ADDR_TYPE_LE_RANDOM: 620 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 621 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 622 return true; 623 default: 624 return false; 625 } 626 } 627 628 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 629 switch (address_type){ 630 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 631 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 632 return true; 633 default: 634 return false; 635 } 636 } 637 638 static bool hci_is_le_connection(hci_connection_t * connection){ 639 return hci_is_le_connection_type(connection->address_type); 640 } 641 642 /** 643 * count connections 644 */ 645 static int nr_hci_connections(void){ 646 int count = 0; 647 btstack_linked_item_t *it; 648 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 649 count++; 650 } 651 return count; 652 } 653 654 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 655 656 int num_packets_sent_classic = 0; 657 int num_packets_sent_le = 0; 658 659 btstack_linked_item_t *it; 660 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 661 hci_connection_t * connection = (hci_connection_t *) it; 662 if (hci_is_le_connection(connection)){ 663 num_packets_sent_le += connection->num_packets_sent; 664 } 665 if (connection->address_type == BD_ADDR_TYPE_ACL){ 666 num_packets_sent_classic += connection->num_packets_sent; 667 } 668 } 669 btstack_assert(hci_stack->acl_packets_total_num >= num_packets_sent_classic); 670 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 671 int free_slots_le = 0; 672 673 if (hci_stack->le_acl_packets_total_num){ 674 // if we have LE slots, they are used 675 btstack_assert( hci_stack->le_acl_packets_total_num >= num_packets_sent_le); 676 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 677 } else { 678 // otherwise, classic slots are used for LE, too 679 free_slots_classic -= num_packets_sent_le; 680 btstack_assert(free_slots_classic >= num_packets_sent_le); 681 } 682 683 switch (address_type){ 684 case BD_ADDR_TYPE_UNKNOWN: 685 log_error("hci_number_free_acl_slots: unknown address type"); 686 return 0; 687 688 case BD_ADDR_TYPE_ACL: 689 return (uint16_t) free_slots_classic; 690 691 default: 692 if (hci_stack->le_acl_packets_total_num > 0){ 693 return (uint16_t) free_slots_le; 694 } 695 return (uint16_t) free_slots_classic; 696 } 697 } 698 699 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 700 // get connection type 701 hci_connection_t * connection = hci_connection_for_handle(con_handle); 702 if (!connection){ 703 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 704 return 0; 705 } 706 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 707 } 708 709 #ifdef ENABLE_CLASSIC 710 static int hci_number_free_sco_slots(void){ 711 unsigned int num_sco_packets_sent = 0; 712 btstack_linked_item_t *it; 713 if (hci_stack->synchronous_flow_control_enabled){ 714 // explicit flow control 715 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 716 hci_connection_t * connection = (hci_connection_t *) it; 717 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 718 num_sco_packets_sent += connection->num_packets_sent; 719 } 720 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 721 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 722 return 0; 723 } 724 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 725 } else { 726 // implicit flow control 727 int num_ready = 0; 728 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 729 hci_connection_t * connection = (hci_connection_t *) it; 730 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 731 if (connection->sco_tx_ready == 0) continue; 732 num_ready++; 733 } 734 return num_ready; 735 } 736 } 737 #endif 738 739 // only used to send HCI Host Number Completed Packets 740 static int hci_can_send_command_packet_transport(void){ 741 if (hci_stack->hci_packet_buffer_reserved) return 0; 742 743 // check for async hci transport implementations 744 if (hci_stack->hci_transport->can_send_packet_now){ 745 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 746 return 0; 747 } 748 } 749 return 1; 750 } 751 752 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 753 bool hci_can_send_command_packet_now(void){ 754 if (hci_can_send_command_packet_transport() == 0) return false; 755 return hci_stack->num_cmd_packets > 0u; 756 } 757 758 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 759 // check for async hci transport implementations 760 if (!hci_stack->hci_transport->can_send_packet_now) return true; 761 return hci_stack->hci_transport->can_send_packet_now(packet_type); 762 } 763 764 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 765 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 766 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 767 } 768 769 bool hci_can_send_acl_le_packet_now(void){ 770 if (hci_stack->hci_packet_buffer_reserved) return false; 771 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 772 } 773 774 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 775 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 776 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 777 } 778 779 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 780 if (hci_stack->hci_packet_buffer_reserved) return false; 781 return hci_can_send_prepared_acl_packet_now(con_handle); 782 } 783 784 #ifdef ENABLE_CLASSIC 785 bool hci_can_send_acl_classic_packet_now(void){ 786 if (hci_stack->hci_packet_buffer_reserved) return false; 787 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 788 } 789 790 bool hci_can_send_prepared_sco_packet_now(void){ 791 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 792 if (hci_have_usb_transport()){ 793 return hci_stack->sco_can_send_now; 794 } else { 795 return hci_number_free_sco_slots() > 0; 796 } 797 } 798 799 bool hci_can_send_sco_packet_now(void){ 800 if (hci_stack->hci_packet_buffer_reserved) return false; 801 return hci_can_send_prepared_sco_packet_now(); 802 } 803 804 void hci_request_sco_can_send_now_event(void){ 805 hci_stack->sco_waiting_for_can_send_now = 1; 806 hci_notify_if_sco_can_send_now(); 807 } 808 #endif 809 810 // used for internal checks in l2cap.c 811 bool hci_is_packet_buffer_reserved(void){ 812 return hci_stack->hci_packet_buffer_reserved; 813 } 814 815 void hci_reserve_packet_buffer(void){ 816 btstack_assert(hci_stack->hci_packet_buffer_reserved == false); 817 hci_stack->hci_packet_buffer_reserved = true; 818 } 819 820 void hci_release_packet_buffer(void){ 821 btstack_assert(hci_stack->hci_packet_buffer_reserved); 822 hci_stack->hci_packet_buffer_reserved = false; 823 hci_emit_transport_packet_sent(); 824 } 825 826 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 827 static int hci_transport_synchronous(void){ 828 return hci_stack->hci_transport->can_send_packet_now == NULL; 829 } 830 831 // used for debugging 832 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 833 static void hci_controller_dump_packets(void){ 834 // format: "{handle:04x}:{count:02d} " 835 char summaries[3][7 * 8 + 1]; 836 uint16_t totals[3]; 837 uint8_t index; 838 for (index = 0 ; index < 3 ; index++){ 839 summaries[index][0] = 0; 840 totals[index] = 0; 841 } 842 btstack_linked_item_t *it; 843 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 844 hci_connection_t * connection = (hci_connection_t *) it; 845 switch (connection->address_type){ 846 case BD_ADDR_TYPE_ACL: 847 index = 0; 848 break; 849 case BD_ADDR_TYPE_SCO: 850 index = 2; 851 break; 852 default: 853 index = 1; 854 break; 855 } 856 totals[index] += connection->num_packets_sent; 857 char item_text[10]; 858 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 859 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 860 } 861 for (index = 0 ; index < 3 ; index++){ 862 if (summaries[index][0] == 0){ 863 summaries[index][0] = '-'; 864 summaries[index][1] = 0; 865 } 866 } 867 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 868 } 869 #endif 870 871 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 872 873 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 874 875 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 876 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 877 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 878 max_acl_data_packet_length = hci_stack->le_data_packets_length; 879 } 880 881 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 882 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 883 max_acl_data_packet_length = connection->le_max_tx_octets; 884 } 885 #endif 886 887 log_debug("hci_send_acl_packet_fragments entered"); 888 889 uint8_t status = ERROR_CODE_SUCCESS; 890 // multiple packets could be sent on a synchronous HCI transport 891 while (true){ 892 893 log_debug("hci_send_acl_packet_fragments loop entered"); 894 895 // get current data 896 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 897 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 898 bool more_fragments = false; 899 900 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 901 if (current_acl_data_packet_length > max_acl_data_packet_length){ 902 more_fragments = true; 903 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 904 } 905 906 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragment) 907 if (acl_header_pos > 0u){ 908 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 909 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 910 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 911 } 912 913 // update header len 914 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 915 916 // count packet 917 connection->num_packets_sent++; 918 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 919 920 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 921 if (more_fragments){ 922 // update start of next fragment to send 923 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 924 } else { 925 // done 926 hci_stack->acl_fragmentation_pos = 0; 927 hci_stack->acl_fragmentation_total_size = 0; 928 } 929 930 // send packet 931 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 932 const int size = current_acl_data_packet_length + 4; 933 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 934 hci_stack->acl_fragmentation_tx_active = 1; 935 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 936 if (err != 0){ 937 // no error from HCI Transport expected 938 status = ERROR_CODE_HARDWARE_FAILURE; 939 break; 940 } 941 942 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 943 hci_controller_dump_packets(); 944 #endif 945 946 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 947 948 // done yet? 949 if (!more_fragments) break; 950 951 // can send more? 952 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 953 } 954 955 log_debug("hci_send_acl_packet_fragments loop over"); 956 957 // release buffer now for synchronous transport 958 if (hci_transport_synchronous()){ 959 hci_stack->acl_fragmentation_tx_active = 0; 960 hci_release_packet_buffer(); 961 } 962 963 return status; 964 } 965 966 // pre: caller has reserved the packet buffer 967 uint8_t hci_send_acl_packet_buffer(int size){ 968 btstack_assert(hci_stack->hci_packet_buffer_reserved); 969 970 uint8_t * packet = hci_stack->hci_packet_buffer; 971 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 972 973 hci_connection_t *connection = hci_connection_for_handle( con_handle); 974 if (!connection) { 975 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 976 hci_release_packet_buffer(); 977 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 978 } 979 980 // check for free places on Bluetooth module 981 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 982 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 983 hci_release_packet_buffer(); 984 return BTSTACK_ACL_BUFFERS_FULL; 985 } 986 987 #ifdef ENABLE_CLASSIC 988 hci_connection_timestamp(connection); 989 #endif 990 991 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 992 993 // setup data 994 hci_stack->acl_fragmentation_total_size = size; 995 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 996 997 return hci_send_acl_packet_fragments(connection); 998 } 999 1000 #ifdef ENABLE_CLASSIC 1001 // pre: caller has reserved the packet buffer 1002 uint8_t hci_send_sco_packet_buffer(int size){ 1003 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1004 1005 uint8_t * packet = hci_stack->hci_packet_buffer; 1006 1007 // skip checks in loopback mode 1008 if (!hci_stack->loopback_mode){ 1009 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1010 1011 // check for free places on Bluetooth module 1012 if (!hci_can_send_prepared_sco_packet_now()) { 1013 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1014 hci_release_packet_buffer(); 1015 return BTSTACK_ACL_BUFFERS_FULL; 1016 } 1017 1018 // track send packet in connection struct 1019 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1020 if (!connection) { 1021 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1022 hci_release_packet_buffer(); 1023 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1024 } 1025 1026 if (hci_have_usb_transport()){ 1027 // token used 1028 hci_stack->sco_can_send_now = false; 1029 } else { 1030 if (hci_stack->synchronous_flow_control_enabled){ 1031 connection->num_packets_sent++; 1032 } else { 1033 connection->sco_tx_ready--; 1034 } 1035 } 1036 } 1037 1038 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1039 1040 #ifdef HAVE_SCO_TRANSPORT 1041 hci_stack->sco_transport->send_packet(packet, size); 1042 hci_release_packet_buffer(); 1043 hci_emit_transport_packet_sent(); 1044 1045 return 0; 1046 #else 1047 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1048 uint8_t status; 1049 if (err == 0){ 1050 status = ERROR_CODE_SUCCESS; 1051 } else { 1052 status = ERROR_CODE_HARDWARE_FAILURE; 1053 } 1054 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 1055 hci_release_packet_buffer(); 1056 } 1057 return status; 1058 #endif 1059 } 1060 #endif 1061 1062 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1063 static uint8_t hci_send_iso_packet_fragments(void){ 1064 1065 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1066 uint8_t status = ERROR_CODE_SUCCESS; 1067 // multiple packets could be send on a synchronous HCI transport 1068 while (true){ 1069 1070 // get current data 1071 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1072 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1073 bool more_fragments = false; 1074 1075 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1076 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1077 more_fragments = true; 1078 current_iso_data_packet_length = max_iso_data_packet_length; 1079 } 1080 1081 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1082 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1083 uint8_t pb_flags; 1084 if (iso_header_pos == 0u){ 1085 // first fragment, keep TS field 1086 pb_flags = more_fragments ? 0x00 : 0x02; 1087 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1088 } else { 1089 // later fragment, drop TS field 1090 pb_flags = more_fragments ? 0x01 : 0x03; 1091 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1092 } 1093 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1094 1095 // update header len 1096 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1097 1098 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1099 if (more_fragments){ 1100 // update start of next fragment to send 1101 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1102 } else { 1103 // done 1104 hci_stack->iso_fragmentation_pos = 0; 1105 hci_stack->iso_fragmentation_total_size = 0; 1106 } 1107 1108 // send packet 1109 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1110 const int size = current_iso_data_packet_length + 4; 1111 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1112 hci_stack->iso_fragmentation_tx_active = true; 1113 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1114 if (err != 0){ 1115 // no error from HCI Transport expected 1116 status = ERROR_CODE_HARDWARE_FAILURE; 1117 } 1118 1119 // done yet? 1120 if (!more_fragments) break; 1121 1122 // can send more? 1123 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1124 } 1125 1126 // release buffer now for synchronous transport 1127 if (hci_transport_synchronous()){ 1128 hci_stack->iso_fragmentation_tx_active = false; 1129 hci_release_packet_buffer(); 1130 hci_emit_transport_packet_sent(); 1131 } 1132 1133 return status; 1134 } 1135 1136 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1137 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1138 1139 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1140 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1141 if (iso_stream == NULL){ 1142 hci_release_packet_buffer(); 1143 hci_iso_notify_can_send_now(); 1144 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1145 } 1146 1147 // TODO: check for space on controller 1148 1149 // skip iso packets if needed 1150 if (iso_stream->num_packets_to_skip > 0){ 1151 iso_stream->num_packets_to_skip--; 1152 // pretend it was processed and trigger next one 1153 hci_release_packet_buffer(); 1154 hci_iso_notify_can_send_now(); 1155 return ERROR_CODE_SUCCESS; 1156 } 1157 1158 // track outgoing packet sent 1159 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1160 iso_stream->num_packets_sent++; 1161 1162 // setup data 1163 hci_stack->iso_fragmentation_total_size = size; 1164 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1165 1166 return hci_send_iso_packet_fragments(); 1167 } 1168 #endif 1169 1170 static void acl_handler(uint8_t *packet, uint16_t size){ 1171 1172 // get info 1173 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1174 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1175 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1176 uint16_t acl_length = READ_ACL_LENGTH(packet); 1177 1178 // ignore non-registered handle 1179 if (!conn){ 1180 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1181 return; 1182 } 1183 1184 // assert packet is complete 1185 if ((acl_length + 4u) != size){ 1186 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1187 return; 1188 } 1189 1190 #ifdef ENABLE_CLASSIC 1191 // update idle timestamp 1192 hci_connection_timestamp(conn); 1193 #endif 1194 1195 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1196 hci_stack->host_completed_packets = 1; 1197 conn->num_packets_completed++; 1198 #endif 1199 1200 // handle different packet types 1201 switch (acl_flags & 0x03u) { 1202 1203 case 0x01: // continuation fragment 1204 1205 // sanity checks 1206 if (conn->acl_recombination_pos == 0u) { 1207 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1208 return; 1209 } 1210 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1211 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1212 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1213 conn->acl_recombination_pos = 0; 1214 return; 1215 } 1216 1217 // append fragment payload (header already stored) 1218 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1219 &packet[4], acl_length); 1220 conn->acl_recombination_pos += acl_length; 1221 1222 // forward complete L2CAP packet if complete. 1223 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1224 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1225 // reset recombination buffer 1226 conn->acl_recombination_length = 0; 1227 conn->acl_recombination_pos = 0; 1228 } 1229 break; 1230 1231 case 0x02: { // first fragment 1232 1233 // sanity check 1234 if (conn->acl_recombination_pos) { 1235 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1236 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1237 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1238 } 1239 conn->acl_recombination_pos = 0; 1240 } 1241 1242 // peek into L2CAP packet! 1243 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1244 1245 // compare fragment size to L2CAP packet size 1246 if (acl_length >= (l2cap_length + 4u)){ 1247 // forward fragment as L2CAP packet 1248 hci_emit_acl_packet(packet, l2cap_length + 8u); 1249 } else { 1250 1251 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1252 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1253 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1254 return; 1255 } 1256 1257 // store first fragment and tweak acl length for complete package 1258 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1259 packet, acl_length + 4u); 1260 conn->acl_recombination_pos = acl_length + 4u; 1261 conn->acl_recombination_length = l2cap_length; 1262 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1263 } 1264 break; 1265 1266 } 1267 default: 1268 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1269 return; 1270 } 1271 1272 // execute main loop 1273 hci_run(); 1274 } 1275 1276 static void hci_connection_stop_timer(hci_connection_t * conn){ 1277 btstack_run_loop_remove_timer(&conn->timeout); 1278 #ifdef ENABLE_CLASSIC 1279 btstack_run_loop_remove_timer(&conn->timeout_sco); 1280 #endif 1281 } 1282 1283 static void hci_shutdown_connection(hci_connection_t *conn){ 1284 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1285 1286 #ifdef ENABLE_CLASSIC 1287 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1288 bd_addr_type_t addr_type = conn->address_type; 1289 #endif 1290 #ifdef HAVE_SCO_TRANSPORT 1291 hci_con_handle_t con_handle = conn->con_handle; 1292 #endif 1293 #endif 1294 1295 hci_connection_stop_timer(conn); 1296 1297 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1298 btstack_memory_hci_connection_free( conn ); 1299 1300 // now it's gone 1301 hci_emit_nr_connections_changed(); 1302 1303 #ifdef ENABLE_CLASSIC 1304 #ifdef ENABLE_SCO_OVER_HCI 1305 // update SCO 1306 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1307 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1308 } 1309 #endif 1310 #ifdef HAVE_SCO_TRANSPORT 1311 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1312 hci_stack->sco_transport->close(con_handle); 1313 } 1314 #endif 1315 #endif 1316 } 1317 1318 #ifdef ENABLE_CLASSIC 1319 1320 static const uint16_t hci_acl_packet_type_sizes[] = { 1321 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1322 HCI_ACL_DH1_SIZE, 0, 0, 0, 1323 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1324 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1325 }; 1326 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1327 0, // 3 slot packets 1328 1, // 5 slot packets 1329 25, // EDR 2 mpbs 1330 26, // EDR 3 mbps 1331 39, // 3 slot EDR packtes 1332 40, // 5 slot EDR packet 1333 }; 1334 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1335 0x0f00, // 3 slot packets 1336 0xf000, // 5 slot packets 1337 0x1102, // EDR 2 mpbs 1338 0x2204, // EDR 3 mbps 1339 0x0300, // 3 slot EDR packtes 1340 0x3000, // 5 slot EDR packet 1341 }; 1342 1343 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1344 // enable packet types based on size 1345 uint16_t packet_types = 0; 1346 unsigned int i; 1347 for (i=0;i<16;i++){ 1348 if (hci_acl_packet_type_sizes[i] == 0) continue; 1349 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1350 packet_types |= 1 << i; 1351 } 1352 } 1353 // disable packet types due to missing local supported features 1354 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1355 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1356 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1357 if (feature_set) continue; 1358 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1359 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1360 } 1361 return packet_types; 1362 } 1363 1364 uint16_t hci_usable_acl_packet_types(void){ 1365 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1366 // flip bits for "may not be used" 1367 return active_packet_types ^ 0x3306; 1368 } 1369 1370 void hci_enable_acl_packet_types(uint16_t packet_types){ 1371 hci_stack->enabled_packet_types_acl = packet_types; 1372 } 1373 1374 static const struct { 1375 uint8_t feature_index; 1376 uint16_t feature_packet_mask; 1377 } hci_sco_packet_type_feature_requirements[] = { 1378 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1379 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1380 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1381 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1382 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1383 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1384 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1385 }; 1386 1387 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1388 static const struct { 1389 uint16_t type; 1390 uint16_t payload_length; 1391 } hci_sco_packet_type_to_payload_length[] = { 1392 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1393 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1394 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1395 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1396 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1397 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1398 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1399 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1400 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1401 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1402 }; 1403 1404 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1405 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1406 unsigned int i; 1407 // disable packet types due to missing local supported features 1408 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1409 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1410 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1411 if (feature_set) continue; 1412 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1413 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1414 } 1415 return packet_types; 1416 } 1417 1418 uint16_t hci_usable_sco_packet_types(void){ 1419 return hci_stack->usable_packet_types_sco; 1420 } 1421 1422 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1423 uint8_t i; 1424 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1425 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1426 return hci_sco_packet_type_to_payload_length[i].payload_length; 1427 } 1428 } 1429 return 0; 1430 } 1431 1432 #endif 1433 1434 uint8_t* hci_get_outgoing_packet_buffer(void){ 1435 // hci packet buffer is >= acl data packet length 1436 return hci_stack->hci_packet_buffer; 1437 } 1438 1439 uint16_t hci_max_acl_data_packet_length(void){ 1440 return hci_stack->acl_data_packet_length; 1441 } 1442 1443 #ifdef ENABLE_CLASSIC 1444 bool hci_extended_sco_link_supported(void){ 1445 // No. 31, byte 3, bit 7 1446 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1447 } 1448 #endif 1449 1450 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1451 // No. 54, byte 6, bit 6 1452 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1453 } 1454 1455 #ifdef ENABLE_CLASSIC 1456 static bool gap_ssp_supported(void){ 1457 // No. 51, byte 6, bit 3 1458 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1459 } 1460 #endif 1461 1462 bool hci_classic_supported(void){ 1463 #ifdef ENABLE_CLASSIC 1464 // No. 37, byte 4, bit 5, = No BR/EDR Support 1465 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1466 #else 1467 return false; 1468 #endif 1469 } 1470 1471 bool hci_le_supported(void){ 1472 #ifdef ENABLE_BLE 1473 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1474 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1475 #else 1476 return false; 1477 #endif 1478 } 1479 1480 static bool hci_command_supported(uint8_t command_index){ 1481 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1482 } 1483 1484 #ifdef ENABLE_BLE 1485 1486 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1487 bool hci_le_extended_advertising_supported(void){ 1488 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1489 } 1490 #endif 1491 1492 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1493 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1494 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1495 } else { 1496 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1497 } 1498 } 1499 1500 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1501 *addr_type = hci_stack->le_own_addr_type; 1502 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1503 } 1504 1505 #ifdef ENABLE_LE_PERIPHERAL 1506 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1507 *addr_type = hci_stack->le_advertisements_own_addr_type; 1508 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1509 } 1510 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1511 void gap_le_get_own_advertising_set_address(uint8_t * addr_type, bd_addr_t addr, uint8_t advertising_handle){ 1512 if (advertising_handle == 0){ 1513 gap_le_get_own_advertisements_address(addr_type, addr); 1514 } else { 1515 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 1516 if (advertising_set != NULL){ 1517 switch (advertising_set->extended_params.own_address_type){ 1518 case BD_ADDR_TYPE_LE_PUBLIC: 1519 *addr_type = BD_ADDR_TYPE_LE_PUBLIC; 1520 memcpy(addr, hci_stack->local_bd_addr, 6); 1521 break; 1522 case BD_ADDR_TYPE_LE_RANDOM: 1523 *addr_type = BD_ADDR_TYPE_LE_RANDOM; 1524 memcpy(addr, advertising_set->random_address, 6); 1525 break; 1526 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 1527 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 1528 // do nothing as random address was already set from enhanced connection complete 1529 break; 1530 default: 1531 break; 1532 } 1533 } 1534 } 1535 } 1536 #endif 1537 #endif 1538 1539 #ifdef ENABLE_LE_CENTRAL 1540 1541 /** 1542 * @brief Get own addr type and address used for LE connections (Central) 1543 */ 1544 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1545 *addr_type = hci_stack->le_connection_own_addr_type; 1546 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1547 } 1548 1549 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1550 1551 uint16_t offset = 3; 1552 uint8_t num_reports = packet[offset]; 1553 offset += 1; 1554 1555 uint16_t i; 1556 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1557 for (i=0; (i<num_reports) && (offset < size);i++){ 1558 // sanity checks on data_length: 1559 uint8_t data_length = packet[offset + 8]; 1560 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1561 if ((offset + 9u + data_length + 1u) > size) return; 1562 // setup event 1563 uint8_t event_size = 10u + data_length; 1564 uint16_t pos = 0; 1565 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1566 event[pos++] = event_size; 1567 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1568 offset += 8; 1569 pos += 8; 1570 event[pos++] = packet[offset + 1 + data_length]; // rssi 1571 event[pos++] = data_length; 1572 offset++; 1573 (void)memcpy(&event[pos], &packet[offset], data_length); 1574 pos += data_length; 1575 offset += data_length + 1u; // rssi 1576 hci_emit_btstack_event(event, pos, 1); 1577 } 1578 } 1579 1580 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1581 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1582 uint16_t offset = 3; 1583 uint8_t num_reports = packet[offset++]; 1584 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1585 uint8_t i; 1586 for (i=0; (i<num_reports) && (offset < size);i++){ 1587 // sanity checks on data_length: 1588 uint16_t data_length = packet[offset + 23]; 1589 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1590 if ((offset + 24u + data_length) > size) return; 1591 uint16_t event_type = little_endian_read_16(packet, offset); 1592 offset += 2; 1593 if ((event_type & 0x10) != 0) { 1594 // setup legacy event 1595 uint8_t legacy_event_type; 1596 switch (event_type){ 1597 case 0x13: // 0b0010011 1598 // ADV_IND 1599 legacy_event_type = 0; 1600 break; 1601 case 0x15: // 0b0010101 1602 // ADV_DIRECT_IND 1603 legacy_event_type = 1; 1604 break; 1605 case 0x12: // 0b0010010 1606 // ADV_SCAN_IND 1607 legacy_event_type = 2; 1608 break; 1609 case 0x10: // 0b0010000: 1610 // ADV_NONCONN_IND 1611 legacy_event_type = 3; 1612 break; 1613 case 0x1B: // 0b0011011 1614 case 0x1A: // 0b0011010 1615 // SCAN_RSP 1616 legacy_event_type = 4; 1617 break; 1618 default: 1619 legacy_event_type = 0; 1620 break; 1621 } 1622 uint16_t pos = 0; 1623 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1624 event[pos++] = 10u + data_length; 1625 event[pos++] = legacy_event_type; 1626 // copy address type + address 1627 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1628 offset += 7; 1629 pos += 7; 1630 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1631 offset += 4; 1632 // copy rssi 1633 event[pos++] = packet[offset++]; 1634 // skip periodic advertising interval and direct address 1635 offset += 9; 1636 // copy data len + data; 1637 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1638 pos += 1 +data_length; 1639 offset += 1+ data_length; 1640 hci_emit_btstack_event(event, pos, 1); 1641 } else { 1642 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1643 uint8_t report_len = 24 + data_length; 1644 event[1] = report_len; 1645 little_endian_store_16(event, 2, event_type); 1646 memcpy(&event[4], &packet[offset], report_len); 1647 offset += report_len; 1648 hci_emit_btstack_event(event, 2 + report_len, 1); 1649 } 1650 } 1651 } 1652 #endif 1653 1654 #endif 1655 #endif 1656 1657 #ifdef ENABLE_BLE 1658 #ifdef ENABLE_LE_PERIPHERAL 1659 static void hci_update_advertisements_enabled_for_current_roles(void){ 1660 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1661 // get number of active le slave connections 1662 int num_slave_connections = 0; 1663 btstack_linked_list_iterator_t it; 1664 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1665 while (btstack_linked_list_iterator_has_next(&it)){ 1666 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1667 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1668 if (con->state != OPEN) continue; 1669 if (con->role != HCI_ROLE_SLAVE) continue; 1670 if (!hci_is_le_connection(con)) continue; 1671 num_slave_connections++; 1672 } 1673 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1674 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1675 } else { 1676 hci_stack->le_advertisements_enabled_for_current_roles = false; 1677 } 1678 } 1679 #endif 1680 #endif 1681 1682 #ifdef ENABLE_CLASSIC 1683 static void gap_run_set_local_name(void){ 1684 hci_reserve_packet_buffer(); 1685 uint8_t * packet = hci_stack->hci_packet_buffer; 1686 // construct HCI Command and send 1687 uint16_t opcode = hci_write_local_name.opcode; 1688 packet[0] = opcode & 0xff; 1689 packet[1] = opcode >> 8; 1690 packet[2] = DEVICE_NAME_LEN; 1691 memset(&packet[3], 0, DEVICE_NAME_LEN); 1692 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1693 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1694 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1695 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1696 // expand '00:00:00:00:00:00' in name with bd_addr 1697 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1698 hci_send_prepared_cmd_packet(); 1699 } 1700 1701 static void gap_run_set_eir_data(void){ 1702 hci_reserve_packet_buffer(); 1703 uint8_t * packet = hci_stack->hci_packet_buffer; 1704 // construct HCI Command in-place and send 1705 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1706 uint16_t offset = 0; 1707 packet[offset++] = opcode & 0xff; 1708 packet[offset++] = opcode >> 8; 1709 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1710 packet[offset++] = 0; // FEC not required 1711 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1712 if (hci_stack->eir_data){ 1713 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1714 ad_context_t context; 1715 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1716 uint8_t data_type = ad_iterator_get_data_type(&context); 1717 uint8_t size = ad_iterator_get_data_len(&context); 1718 const uint8_t *data = ad_iterator_get_data(&context); 1719 // copy item 1720 packet[offset++] = size + 1; 1721 packet[offset++] = data_type; 1722 memcpy(&packet[offset], data, size); 1723 // update name item 1724 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1725 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1726 } 1727 offset += size; 1728 } 1729 } else { 1730 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1731 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1732 packet[offset++] = bytes_to_copy + 1; 1733 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1734 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1735 // expand '00:00:00:00:00:00' in name with bd_addr 1736 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1737 } 1738 hci_send_prepared_cmd_packet(); 1739 } 1740 1741 static void hci_run_gap_tasks_classic(void){ 1742 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1743 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1744 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1745 return; 1746 } 1747 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1748 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1749 gap_run_set_local_name(); 1750 return; 1751 } 1752 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1753 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1754 gap_run_set_eir_data(); 1755 return; 1756 } 1757 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1758 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1759 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1760 return; 1761 } 1762 // write page scan activity 1763 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1764 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1765 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1766 return; 1767 } 1768 // write page scan type 1769 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1770 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1771 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1772 return; 1773 } 1774 // write page timeout 1775 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1776 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1777 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1778 return; 1779 } 1780 // send scan enable 1781 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1782 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1783 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1784 return; 1785 } 1786 // send write scan activity 1787 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1788 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1789 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1790 return; 1791 } 1792 // send write inquiry transmit power level 1793 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1794 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1795 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1796 return; 1797 } 1798 } 1799 #endif 1800 1801 #ifndef HAVE_HOST_CONTROLLER_API 1802 1803 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1804 if (!hci_stack->config) return 0; 1805 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1806 return baud_rate; 1807 } 1808 1809 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1810 UNUSED(ds); 1811 1812 switch (hci_stack->substate){ 1813 case HCI_INIT_W4_SEND_RESET: 1814 log_info("Resend HCI Reset"); 1815 hci_stack->substate = HCI_INIT_SEND_RESET; 1816 hci_stack->num_cmd_packets = 1; 1817 hci_run(); 1818 break; 1819 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1820 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1821 if (hci_stack->hci_transport->reset_link){ 1822 hci_stack->hci_transport->reset_link(); 1823 } 1824 1825 /* fall through */ 1826 1827 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1828 log_info("Resend HCI Reset - CSR Warm Boot"); 1829 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1830 hci_stack->num_cmd_packets = 1; 1831 hci_run(); 1832 break; 1833 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1834 if (hci_stack->hci_transport->set_baudrate){ 1835 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1836 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1837 hci_stack->hci_transport->set_baudrate(baud_rate); 1838 } 1839 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1840 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1841 if (hci_stack->hci_transport->reset_link){ 1842 log_info("Link Reset"); 1843 hci_stack->hci_transport->reset_link(); 1844 } 1845 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1846 hci_run(); 1847 } 1848 break; 1849 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1850 // otherwise continue 1851 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1852 hci_send_cmd(&hci_read_local_supported_commands); 1853 break; 1854 default: 1855 break; 1856 } 1857 } 1858 #endif 1859 1860 static void hci_initializing_next_state(void){ 1861 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1862 } 1863 1864 static void hci_init_done(void){ 1865 // done. tell the app 1866 log_info("hci_init_done -> HCI_STATE_WORKING"); 1867 hci_stack->state = HCI_STATE_WORKING; 1868 hci_emit_state(); 1869 } 1870 1871 // assumption: hci_can_send_command_packet_now() == true 1872 static void hci_initializing_run(void){ 1873 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1874 1875 if (!hci_can_send_command_packet_now()) return; 1876 1877 #ifndef HAVE_HOST_CONTROLLER_API 1878 bool need_baud_change = hci_stack->config 1879 && hci_stack->chipset 1880 && hci_stack->chipset->set_baudrate_command 1881 && hci_stack->hci_transport->set_baudrate 1882 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1883 #endif 1884 1885 switch (hci_stack->substate){ 1886 case HCI_INIT_SEND_RESET: 1887 hci_state_reset(); 1888 1889 #ifndef HAVE_HOST_CONTROLLER_API 1890 // prepare reset if command complete not received in 100ms 1891 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1892 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1893 btstack_run_loop_add_timer(&hci_stack->timeout); 1894 #endif 1895 // send command 1896 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1897 hci_send_cmd(&hci_reset); 1898 break; 1899 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1900 hci_send_cmd(&hci_read_local_version_information); 1901 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1902 break; 1903 1904 #ifndef HAVE_HOST_CONTROLLER_API 1905 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1906 hci_state_reset(); 1907 // prepare reset if command complete not received in 100ms 1908 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1909 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1910 btstack_run_loop_add_timer(&hci_stack->timeout); 1911 // send command 1912 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1913 hci_send_cmd(&hci_reset); 1914 break; 1915 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1916 hci_state_reset(); 1917 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1918 hci_send_cmd(&hci_reset); 1919 break; 1920 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1921 hci_reserve_packet_buffer(); 1922 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1923 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1924 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1925 hci_send_prepared_cmd_packet(); 1926 break; 1927 } 1928 case HCI_INIT_SET_BD_ADDR: 1929 hci_reserve_packet_buffer(); 1930 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1931 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1932 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1933 hci_send_prepared_cmd_packet(); 1934 break; 1935 case HCI_INIT_SEND_READ_LOCAL_NAME: 1936 #ifdef ENABLE_CLASSIC 1937 hci_send_cmd(&hci_read_local_name); 1938 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1939 break; 1940 #endif 1941 /* fall through */ 1942 1943 case HCI_INIT_SEND_BAUD_CHANGE: 1944 if (need_baud_change) { 1945 hci_reserve_packet_buffer(); 1946 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1947 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1948 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1949 hci_send_prepared_cmd_packet(); 1950 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1951 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1952 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1953 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1954 btstack_run_loop_add_timer(&hci_stack->timeout); 1955 } 1956 break; 1957 } 1958 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1959 1960 /* fall through */ 1961 1962 case HCI_INIT_CUSTOM_INIT: 1963 case HCI_INIT_CUSTOM_PRE_INIT: 1964 // Custom initialization 1965 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1966 hci_reserve_packet_buffer(); 1967 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1968 bool send_cmd = false; 1969 switch (hci_stack->chipset_result){ 1970 case BTSTACK_CHIPSET_VALID_COMMAND: 1971 send_cmd = true; 1972 switch (hci_stack->substate){ 1973 case HCI_INIT_CUSTOM_INIT: 1974 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1975 break; 1976 case HCI_INIT_CUSTOM_PRE_INIT: 1977 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1978 break; 1979 default: 1980 btstack_assert(false); 1981 break; 1982 } 1983 break; 1984 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1985 send_cmd = true; 1986 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1987 log_info("CSR Warm Boot"); 1988 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1989 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1990 btstack_run_loop_add_timer(&hci_stack->timeout); 1991 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1992 && hci_stack->config 1993 && hci_stack->chipset 1994 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1995 && hci_stack->hci_transport->set_baudrate 1996 && hci_transport_uart_get_main_baud_rate()){ 1997 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1998 } else { 1999 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2000 } 2001 break; 2002 default: 2003 break; 2004 } 2005 2006 if (send_cmd){ 2007 hci_send_prepared_cmd_packet(); 2008 break; 2009 } else { 2010 hci_release_packet_buffer(); 2011 } 2012 log_info("Init script done"); 2013 2014 // Custom Pre-Init complete, start regular init with HCI Reset 2015 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2016 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2017 hci_send_cmd(&hci_reset); 2018 break; 2019 } 2020 2021 // Init script download on Broadcom chipsets causes: 2022 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2023 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2024 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2025 2026 // - baud rate to reset, restore UART baud rate if needed 2027 if (need_baud_change) { 2028 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2029 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2030 hci_stack->hci_transport->set_baudrate(baud_rate); 2031 } 2032 2033 uint16_t bcm_delay_ms = 300; 2034 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2035 // -> Work around: wait here. 2036 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2037 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2038 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2039 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2040 btstack_run_loop_add_timer(&hci_stack->timeout); 2041 break; 2042 } 2043 } 2044 #endif 2045 /* fall through */ 2046 2047 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2048 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2049 hci_send_cmd(&hci_read_local_supported_commands); 2050 break; 2051 case HCI_INIT_READ_BD_ADDR: 2052 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2053 hci_send_cmd(&hci_read_bd_addr); 2054 break; 2055 case HCI_INIT_READ_BUFFER_SIZE: 2056 // only read buffer size if supported 2057 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2058 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2059 hci_send_cmd(&hci_read_buffer_size); 2060 break; 2061 } 2062 2063 /* fall through */ 2064 2065 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2066 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2067 hci_send_cmd(&hci_read_local_supported_features); 2068 break; 2069 2070 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2071 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2072 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2073 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2074 break; 2075 case HCI_INIT_HOST_BUFFER_SIZE: 2076 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2077 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2078 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2079 break; 2080 #endif 2081 2082 case HCI_INIT_SET_EVENT_MASK: 2083 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2084 if (hci_le_supported()){ 2085 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2086 } else { 2087 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2088 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2089 } 2090 break; 2091 2092 case HCI_INIT_SET_EVENT_MASK_2: 2093 // On Bluetooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2094 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2095 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2096 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2097 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2098 // Encryption Change Event v2 - bit 25 2099 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2100 break; 2101 } 2102 2103 #ifdef ENABLE_CLASSIC 2104 /* fall through */ 2105 2106 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2107 if (hci_classic_supported() && gap_ssp_supported()){ 2108 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2109 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2110 break; 2111 } 2112 2113 /* fall through */ 2114 2115 case HCI_INIT_WRITE_INQUIRY_MODE: 2116 if (hci_classic_supported()){ 2117 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2118 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2119 break; 2120 } 2121 2122 /* fall through */ 2123 2124 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2125 // skip write secure connections host support if not supported or disabled 2126 if (hci_classic_supported() && hci_stack->secure_connections_enable 2127 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2128 hci_stack->secure_connections_active = true; 2129 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2130 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2131 break; 2132 } 2133 2134 /* fall through */ 2135 2136 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2137 // skip set min encryption key size 2138 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2139 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2140 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2141 break; 2142 } 2143 2144 #ifdef ENABLE_SCO_OVER_HCI 2145 /* fall through */ 2146 2147 // only sent if ENABLE_SCO_OVER_HCI is defined 2148 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2149 // skip write synchronous flow control if not supported 2150 if (hci_classic_supported() 2151 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2152 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2153 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2154 break; 2155 } 2156 /* fall through */ 2157 2158 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2159 // skip write default erroneous data reporting if not supported 2160 if (hci_classic_supported() 2161 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2162 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2163 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2164 break; 2165 } 2166 #endif 2167 2168 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2169 /* fall through */ 2170 2171 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2172 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2173 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2174 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2175 #ifdef ENABLE_SCO_OVER_HCI 2176 log_info("BCM: Route SCO data via HCI transport"); 2177 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2178 #endif 2179 #ifdef ENABLE_SCO_OVER_PCM 2180 log_info("BCM: Route SCO data via PCM interface"); 2181 #ifdef ENABLE_BCM_PCM_WBS 2182 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2183 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2184 #else 2185 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2186 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2187 #endif 2188 #endif 2189 break; 2190 } 2191 #endif 2192 2193 #ifdef ENABLE_SCO_OVER_PCM 2194 /* fall through */ 2195 2196 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2197 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2198 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2199 log_info("BCM: Config PCM interface for I2S"); 2200 #ifdef ENABLE_BCM_PCM_WBS 2201 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2202 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2203 #else 2204 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2205 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2206 #endif 2207 break; 2208 } 2209 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2210 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2211 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2212 log_info("BCM: Config PCM Data format"); 2213 // msb first, fill bits 0, left justified 2214 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2215 break; 2216 } 2217 #ifdef HAVE_BCM_PCM2 2218 case HCI_INIT_BCM_PCM2_SETUP: 2219 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2220 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2221 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2222 uint32_t pcm_clock_freq; 2223 uint8_t ch_0_period; 2224 #ifdef ENABLE_BCM_PCM_WBS 2225 // 512 kHz, resample 8 kHz to 16 khz 2226 pcm_clock_freq = 512000; 2227 ch_0_period = 1; 2228 #else 2229 // 256 khz, 8 khz output 2230 pcm_clock_freq = 256000; 2231 ch_0_period = 0; 2232 #endif 2233 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2234 hci_send_cmd(&hci_bcm_pcm2_setup, 2235 0x00, // Action = Write 2236 0x00, // Test_Options = None 2237 op_mode, // Op_Mode 2238 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2239 pcm_clock_freq, // PCM_Clock_Freq 2240 0x01, // Sync_Signal_Width 2241 0x0F, // Slot_Width 2242 0x01, // NumberOfSlots 2243 0x00, // Bank_0_Fill_Mode = 0s 2244 0x00, // Bank_0_Number_of_Fill_Bits 2245 0x00, // Bank_0_Programmable_Fill_Data 2246 0x00, // Bank_1_Fill_Mode = 0s 2247 0x00, // Bank_1_Number_of_Fill_Bits 2248 0x00, // Bank_1_Programmable_Fill_Data 2249 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2250 0x00, // Ch_0_Slot_Number 2251 0x01, // Ch_1_Slot_Number 2252 0x02, // Ch_2_Slot_Number 2253 0x03, // Ch_3_Slot_Number 2254 0x04, // Ch_4_Slot_Number 2255 ch_0_period, // Ch_0_Period 2256 0x00, // Ch_1_Period 2257 0x00 // Ch_2_Period 2258 ); 2259 break; 2260 } 2261 #endif 2262 #endif /* ENABLE_SCO_OVER_PCM */ 2263 #endif /* ENABLE_CLASSIC */ 2264 2265 #ifdef ENABLE_BLE 2266 /* fall through */ 2267 2268 // LE INIT 2269 case HCI_INIT_LE_READ_BUFFER_SIZE: 2270 if (hci_le_supported()){ 2271 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2272 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2273 hci_send_cmd(&hci_le_read_buffer_size_v2); 2274 } else { 2275 hci_send_cmd(&hci_le_read_buffer_size); 2276 } 2277 break; 2278 } 2279 2280 /* fall through */ 2281 2282 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2283 // skip write le host if not supported (e.g. on LE only EM9301) 2284 if (hci_le_supported() 2285 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2286 // LE Supported Host = 1, Simultaneous Host = 0 2287 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2288 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2289 break; 2290 } 2291 2292 /* fall through */ 2293 2294 case HCI_INIT_LE_SET_EVENT_MASK: 2295 if (hci_le_supported()){ 2296 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2297 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2298 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2299 #else 2300 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2301 #endif 2302 break; 2303 } 2304 #endif 2305 2306 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2307 /* fall through */ 2308 2309 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2310 if (hci_le_supported() 2311 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2312 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2313 hci_send_cmd(&hci_le_read_maximum_data_length); 2314 break; 2315 } 2316 2317 /* fall through */ 2318 2319 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2320 if (hci_le_supported() 2321 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2322 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2323 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2324 break; 2325 } 2326 #endif 2327 2328 #ifdef ENABLE_LE_CENTRAL 2329 /* fall through */ 2330 2331 case HCI_INIT_READ_WHITE_LIST_SIZE: 2332 if (hci_le_supported()){ 2333 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2334 hci_send_cmd(&hci_le_read_white_list_size); 2335 break; 2336 } 2337 2338 #endif 2339 2340 #ifdef ENABLE_LE_PERIPHERAL 2341 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2342 /* fall through */ 2343 2344 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2345 if (hci_le_extended_advertising_supported()){ 2346 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2347 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2348 break; 2349 } 2350 #endif 2351 #endif 2352 2353 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2354 /* fall through */ 2355 2356 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2357 if (hci_le_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_HOST_FEATURE_V1)) { 2358 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2359 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2360 break; 2361 } 2362 #endif 2363 2364 #ifdef ENABLE_BLE 2365 /* fall through */ 2366 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTION_SUBRATING: 2367 if (hci_le_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_HOST_FEATURE_V1)) { 2368 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTION_SUBRATING; 2369 hci_send_cmd(&hci_le_set_host_feature, 38, 1); 2370 break; 2371 } 2372 #endif 2373 /* fall through */ 2374 2375 case HCI_INIT_DONE: 2376 hci_stack->substate = HCI_INIT_DONE; 2377 // main init sequence complete 2378 #ifdef ENABLE_CLASSIC 2379 // check if initial Classic GAP Tasks are completed 2380 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2381 hci_run_gap_tasks_classic(); 2382 break; 2383 } 2384 #endif 2385 #ifdef ENABLE_BLE 2386 #ifdef ENABLE_LE_CENTRAL 2387 // check if initial LE GAP Tasks are completed 2388 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2389 hci_run_general_gap_le(); 2390 break; 2391 } 2392 #endif 2393 #endif 2394 hci_init_done(); 2395 break; 2396 2397 default: 2398 return; 2399 } 2400 } 2401 2402 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2403 bool command_completed = false; 2404 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2405 uint16_t opcode = little_endian_read_16(packet,3); 2406 if (opcode == hci_stack->last_cmd_opcode){ 2407 command_completed = true; 2408 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2409 } else { 2410 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2411 } 2412 } 2413 2414 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2415 uint8_t status = packet[2]; 2416 uint16_t opcode = little_endian_read_16(packet,4); 2417 if (opcode == hci_stack->last_cmd_opcode){ 2418 if (status){ 2419 command_completed = true; 2420 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2421 } else { 2422 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2423 } 2424 } else { 2425 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2426 } 2427 } 2428 #ifndef HAVE_HOST_CONTROLLER_API 2429 // Vendor == CSR 2430 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2431 // TODO: track actual command 2432 command_completed = true; 2433 } 2434 2435 // Vendor == Toshiba 2436 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2437 // TODO: track actual command 2438 command_completed = true; 2439 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2440 hci_stack->num_cmd_packets = 1; 2441 } 2442 #endif 2443 2444 return command_completed; 2445 } 2446 2447 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2448 2449 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2450 2451 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2452 2453 #ifndef HAVE_HOST_CONTROLLER_API 2454 2455 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2456 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2457 // 2458 // HCI Reset 2459 // Timeout 100 ms 2460 // HCI Reset 2461 // Command Complete Reset 2462 // HCI Read Local Version Information 2463 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2464 // hang... 2465 // 2466 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2467 if (!command_completed 2468 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2469 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2470 2471 uint16_t opcode = little_endian_read_16(packet,3); 2472 if (opcode == hci_reset.opcode){ 2473 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2474 return; 2475 } 2476 } 2477 2478 // CSR & H5 2479 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2480 if (!command_completed 2481 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2482 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2483 2484 uint16_t opcode = little_endian_read_16(packet,3); 2485 if (opcode == hci_reset.opcode){ 2486 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2487 return; 2488 } 2489 } 2490 2491 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2492 // fix: Correct substate and behave as command below 2493 if (command_completed){ 2494 switch (hci_stack->substate){ 2495 case HCI_INIT_SEND_RESET: 2496 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2497 break; 2498 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2499 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2500 break; 2501 default: 2502 break; 2503 } 2504 } 2505 2506 #endif 2507 2508 if (!command_completed) return; 2509 2510 bool need_baud_change = false; 2511 bool need_addr_change = false; 2512 2513 #ifndef HAVE_HOST_CONTROLLER_API 2514 need_baud_change = hci_stack->config 2515 && hci_stack->chipset 2516 && hci_stack->chipset->set_baudrate_command 2517 && hci_stack->hci_transport->set_baudrate 2518 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2519 2520 need_addr_change = hci_stack->custom_bd_addr_set 2521 && hci_stack->chipset 2522 && hci_stack->chipset->set_bd_addr_command; 2523 #endif 2524 2525 switch(hci_stack->substate){ 2526 2527 #ifndef HAVE_HOST_CONTROLLER_API 2528 case HCI_INIT_SEND_RESET: 2529 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2530 // fix: just correct substate and behave as command below 2531 2532 /* fall through */ 2533 #endif 2534 2535 case HCI_INIT_W4_SEND_RESET: 2536 btstack_run_loop_remove_timer(&hci_stack->timeout); 2537 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2538 return; 2539 2540 #ifndef HAVE_HOST_CONTROLLER_API 2541 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2542 // for STLC2500D, baud rate change already happened. 2543 // for others, baud rate gets changed now 2544 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2545 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2546 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2547 hci_stack->hci_transport->set_baudrate(baud_rate); 2548 } 2549 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2550 return; 2551 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2552 btstack_run_loop_remove_timer(&hci_stack->timeout); 2553 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2554 return; 2555 case HCI_INIT_W4_CUSTOM_INIT: 2556 // repeat custom init 2557 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2558 return; 2559 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2560 // repeat custom init 2561 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2562 return; 2563 #endif 2564 2565 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2566 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2567 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2568 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2569 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2570 return; 2571 } 2572 if (need_addr_change){ 2573 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2574 return; 2575 } 2576 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2577 return; 2578 #ifndef HAVE_HOST_CONTROLLER_API 2579 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2580 if (need_baud_change){ 2581 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2582 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2583 hci_stack->hci_transport->set_baudrate(baud_rate); 2584 } 2585 if (need_addr_change){ 2586 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2587 return; 2588 } 2589 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2590 return; 2591 case HCI_INIT_W4_SET_BD_ADDR: 2592 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2593 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2594 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2595 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2596 return; 2597 } 2598 // skipping st warm boot 2599 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2600 return; 2601 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2602 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2603 return; 2604 #endif 2605 2606 case HCI_INIT_DONE: 2607 // set state if we came here by fall through 2608 hci_stack->substate = HCI_INIT_DONE; 2609 return; 2610 2611 default: 2612 break; 2613 } 2614 hci_initializing_next_state(); 2615 } 2616 2617 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2618 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2619 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2620 // To prevent accidentally freeing the HCI connection for the ACL connection, 2621 // check if we have been aware of the HCI connection 2622 switch (conn->state){ 2623 case SENT_CREATE_CONNECTION: 2624 case RECEIVED_CONNECTION_REQUEST: 2625 case ACCEPTED_CONNECTION_REQUEST: 2626 break; 2627 default: 2628 return; 2629 } 2630 2631 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2632 bd_addr_t bd_address; 2633 (void)memcpy(&bd_address, conn->address, 6); 2634 2635 #ifdef ENABLE_CLASSIC 2636 // cache needed data 2637 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2638 #endif 2639 2640 // connection failed, remove entry 2641 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2642 btstack_memory_hci_connection_free( conn ); 2643 2644 #ifdef ENABLE_CLASSIC 2645 // notify client if dedicated bonding 2646 if (notify_dedicated_bonding_failed){ 2647 log_info("hci notify_dedicated_bonding_failed"); 2648 hci_emit_dedicated_bonding_result(bd_address, status); 2649 } 2650 2651 // if authentication error, also delete link key 2652 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2653 gap_drop_link_key_for_bd_addr(bd_address); 2654 } 2655 #else 2656 UNUSED(status); 2657 #endif 2658 } 2659 #endif 2660 2661 2662 #ifdef ENABLE_CLASSIC 2663 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2664 // SSP Controller 2665 if (features[6] & (1 << 3)){ 2666 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2667 } 2668 // eSCO 2669 if (features[3] & (1<<7)){ 2670 conn->remote_supported_features[0] |= 1; 2671 } 2672 // Extended features 2673 if (features[7] & (1<<7)){ 2674 conn->remote_supported_features[0] |= 2; 2675 } 2676 // SCO packet types 2677 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2678 } 2679 2680 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2681 // SSP Host 2682 if (features[0] & (1 << 0)){ 2683 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2684 } 2685 // SC Host 2686 if (features[0] & (1 << 3)){ 2687 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2688 } 2689 } 2690 2691 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2692 // SC Controller 2693 if (features[1] & (1 << 0)){ 2694 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2695 } 2696 } 2697 2698 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2699 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2700 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2701 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2702 if (conn->bonding_flags & BONDING_DEDICATED){ 2703 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2704 } 2705 } 2706 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2707 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2708 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2709 } 2710 2711 #endif 2712 2713 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2714 // handle BT initialization 2715 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2716 hci_initializing_event_handler(packet, size); 2717 } 2718 2719 // help with BT sleep 2720 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2721 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2722 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2723 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2724 hci_initializing_next_state(); 2725 } 2726 } 2727 2728 #ifdef ENABLE_CLASSIC 2729 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2730 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2731 conn->requested_security_level = LEVEL_0; 2732 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2733 hci_emit_security_level(conn->con_handle, security_level); 2734 2735 // dedicated bonding 2736 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2737 conn->bonding_flags &= ~BONDING_DEDICATED; 2738 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2739 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2740 // emit dedicated bonding complete, don't disconnect 2741 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2742 #else 2743 // request disconnect, event is emitted after disconnect 2744 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2745 #endif 2746 } 2747 } 2748 2749 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2750 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2751 conn->encryption_key_size = encryption_key_size; 2752 2753 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2754 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2755 hci_handle_mutual_authentication_completed(conn); 2756 } else { 2757 // otherwise trigger remote feature request and send authentication request 2758 hci_trigger_remote_features_for_connection(conn); 2759 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2760 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2761 } 2762 } 2763 } 2764 #endif 2765 2766 static void hci_store_local_supported_commands(const uint8_t * packet){ 2767 // create mapping table 2768 #define X(name, offset, bit) { offset, bit }, 2769 static struct { 2770 uint8_t byte_offset; 2771 uint8_t bit_position; 2772 } supported_hci_commands_map [] = { 2773 SUPPORTED_HCI_COMMANDS 2774 }; 2775 #undef X 2776 2777 // create names for debug purposes 2778 #ifdef ENABLE_LOG_DEBUG 2779 #define X(name, offset, bit) #name, 2780 static const char * command_names[] = { 2781 SUPPORTED_HCI_COMMANDS 2782 }; 2783 #undef X 2784 #endif 2785 2786 hci_stack->local_supported_commands = 0; 2787 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2788 uint16_t i; 2789 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2790 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2791 #ifdef ENABLE_LOG_DEBUG 2792 log_debug("Command %s (%u) supported %u/%u", command_names[i], i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2793 #else 2794 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2795 #endif 2796 hci_stack->local_supported_commands |= (1LU << i); 2797 } 2798 } 2799 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2800 } 2801 2802 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2803 UNUSED(size); 2804 2805 uint8_t status = 0; 2806 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2807 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2808 } 2809 uint16_t manufacturer; 2810 #ifdef ENABLE_CLASSIC 2811 hci_connection_t * conn; 2812 #endif 2813 #if defined(ENABLE_CLASSIC) 2814 hci_con_handle_t handle; 2815 #endif 2816 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2817 le_audio_cig_t * cig; 2818 #endif 2819 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2820 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2821 #endif 2822 2823 // get num cmd packets - limit to 1 to reduce complexity 2824 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2825 2826 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2827 switch (opcode){ 2828 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2829 if (status) break; 2830 // terminate, name 248 chars 2831 packet[6+248] = 0; 2832 log_info("local name: %s", &packet[6]); 2833 break; 2834 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2835 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2836 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2837 uint16_t acl_len = little_endian_read_16(packet, 6); 2838 uint16_t sco_len = packet[8]; 2839 2840 // determine usable ACL/SCO payload size 2841 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2842 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2843 2844 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2845 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2846 2847 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2848 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2849 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2850 } 2851 break; 2852 case HCI_OPCODE_HCI_READ_RSSI: 2853 if (status == ERROR_CODE_SUCCESS){ 2854 uint8_t event[5]; 2855 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2856 event[1] = 3; 2857 (void)memcpy(&event[2], &packet[6], 3); 2858 hci_emit_btstack_event(event, sizeof(event), 1); 2859 } 2860 break; 2861 #ifdef ENABLE_BLE 2862 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2863 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2864 hci_stack->le_iso_packets_total_num = packet[11]; 2865 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2866 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2867 2868 /* fall through */ 2869 2870 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2871 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2872 hci_stack->le_acl_packets_total_num = packet[8]; 2873 // determine usable ACL payload size 2874 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2875 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2876 } 2877 log_info("hci_le_read_buffer_size: acl size %u, acl count %u", hci_stack->le_data_packets_length, hci_stack->le_acl_packets_total_num); 2878 break; 2879 #endif 2880 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2881 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2882 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2883 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2884 log_info("hci_le_read_maximum_data_length: tx octets %u, tx time %u us", hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2885 break; 2886 #endif 2887 #ifdef ENABLE_LE_CENTRAL 2888 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2889 hci_stack->le_whitelist_capacity = packet[6]; 2890 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2891 break; 2892 #endif 2893 #ifdef ENABLE_LE_PERIPHERAL 2894 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2895 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2896 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2897 break; 2898 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2899 if (hci_stack->le_advertising_set_in_current_command != 0) { 2900 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2901 hci_stack->le_advertising_set_in_current_command = 0; 2902 if (advertising_set == NULL) break; 2903 uint8_t adv_status = packet[6]; 2904 uint8_t tx_power = packet[7]; 2905 uint8_t event[] = { HCI_EVENT_META_GAP, 4, GAP_SUBEVENT_ADVERTISING_SET_INSTALLED, hci_stack->le_advertising_set_in_current_command, adv_status, tx_power }; 2906 if (adv_status == 0){ 2907 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2908 } 2909 hci_emit_btstack_event(event, sizeof(event), 1); 2910 } 2911 break; 2912 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2913 if (hci_stack->le_advertising_set_in_current_command != 0) { 2914 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2915 hci_stack->le_advertising_set_in_current_command = 0; 2916 if (advertising_set == NULL) break; 2917 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2918 if (status == 0){ 2919 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2920 } 2921 hci_emit_btstack_event(event, sizeof(event), 1); 2922 } 2923 break; 2924 #endif 2925 #endif 2926 case HCI_OPCODE_HCI_READ_BD_ADDR: 2927 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2928 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2929 #ifdef ENABLE_CLASSIC 2930 if (hci_stack->link_key_db){ 2931 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2932 } 2933 #endif 2934 break; 2935 #ifdef ENABLE_CLASSIC 2936 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2937 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2938 break; 2939 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2940 if (status == ERROR_CODE_SUCCESS) { 2941 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2942 } else { 2943 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2944 } 2945 break; 2946 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2947 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2948 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2949 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2950 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2951 hci_emit_btstack_event(event, sizeof(event), 1); 2952 } 2953 break; 2954 #endif 2955 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2956 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2957 2958 #ifdef ENABLE_CLASSIC 2959 // determine usable ACL packet types based on host buffer size and supported features 2960 hci_stack->usable_packet_types_acl = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2961 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2962 // determine usable SCO packet types based on supported features 2963 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2964 &hci_stack->local_supported_features[0]); 2965 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2966 #endif 2967 // Classic/LE 2968 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2969 break; 2970 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2971 manufacturer = little_endian_read_16(packet, 10); 2972 // map Cypress & Infineon to Broadcom 2973 switch (manufacturer){ 2974 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2975 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2976 log_info("Treat Cypress/Infineon as Broadcom"); 2977 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2978 little_endian_store_16(packet, 10, manufacturer); 2979 break; 2980 default: 2981 break; 2982 } 2983 hci_stack->manufacturer = manufacturer; 2984 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2985 break; 2986 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2987 hci_store_local_supported_commands(packet); 2988 break; 2989 #ifdef ENABLE_CLASSIC 2990 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2991 if (status) return; 2992 hci_stack->synchronous_flow_control_enabled = 1; 2993 break; 2994 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2995 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2996 conn = hci_connection_for_handle(handle); 2997 if (conn != NULL) { 2998 uint8_t key_size = 0; 2999 if (status == 0){ 3000 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 3001 log_info("Handle %04x key Size: %u", handle, key_size); 3002 } else { 3003 key_size = 1; 3004 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3005 } 3006 hci_handle_read_encryption_key_size_complete(conn, key_size); 3007 } 3008 break; 3009 // assert pairing complete event is emitted. 3010 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3011 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3012 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3013 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3014 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3015 // lookup connection by gap pairing addr 3016 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3017 if (conn == NULL) break; 3018 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3019 break; 3020 3021 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3022 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3023 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3024 uint8_t event[67]; 3025 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3026 event[1] = 65; 3027 (void)memset(&event[2], 0, 65); 3028 if (status == ERROR_CODE_SUCCESS){ 3029 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3030 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3031 event[2] = 3; 3032 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3033 } else { 3034 event[2] = 1; 3035 } 3036 } 3037 hci_emit_btstack_event(event, sizeof(event), 0); 3038 break; 3039 } 3040 3041 // note: only needed if user does not provide OOB data 3042 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3043 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3044 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3045 if (conn == NULL) break; 3046 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3047 break; 3048 #endif 3049 #endif 3050 #ifdef ENABLE_BLE 3051 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3052 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3053 // lookup CIG 3054 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3055 if (cig != NULL){ 3056 if (status == ERROR_CODE_SUCCESS){ 3057 uint8_t i; 3058 for (i=0;i<cig->num_cis;i++) { 3059 // assign CIS handles to pre-allocated CIS 3060 uint8_t cis_id = cig->params->cis_params[i].cis_id; 3061 btstack_linked_list_iterator_t it; 3062 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3063 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3064 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3065 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3066 (iso_stream->iso_type == HCI_ISO_TYPE_CIS) && 3067 (iso_stream->stream_id == cis_id)){ 3068 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3069 iso_stream->cis_handle = cis_handle; 3070 cig->cis_con_handles[i] = cis_handle; 3071 break; 3072 } 3073 } 3074 } 3075 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3076 hci_emit_cig_created(cig, status); 3077 } else { 3078 hci_emit_cig_created(cig, status); 3079 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3080 } 3081 } 3082 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3083 break; 3084 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3085 if (status != ERROR_CODE_SUCCESS){ 3086 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3087 } 3088 break; 3089 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3090 if (status != ERROR_CODE_SUCCESS){ 3091 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3092 } 3093 break; 3094 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3095 // lookup BIG by state 3096 btstack_linked_list_iterator_t it; 3097 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3098 while (btstack_linked_list_iterator_has_next(&it)) { 3099 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3100 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3101 if (status == ERROR_CODE_SUCCESS){ 3102 big->state_vars.next_bis++; 3103 if (big->state_vars.next_bis == big->num_bis){ 3104 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3105 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3106 } else { 3107 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3108 } 3109 } else { 3110 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3111 big->state_vars.status = status; 3112 } 3113 return; 3114 } 3115 } 3116 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3117 while (btstack_linked_list_iterator_has_next(&it)) { 3118 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3119 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3120 if (status == ERROR_CODE_SUCCESS){ 3121 big_sync->state_vars.next_bis++; 3122 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3123 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3124 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3125 } else { 3126 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3127 } 3128 } else { 3129 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3130 big_sync->state_vars.status = status; 3131 } 3132 return; 3133 } 3134 } 3135 // Lookup CIS via active group operation 3136 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3137 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3138 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3139 3140 // lookup CIS by state 3141 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3142 while (btstack_linked_list_iterator_has_next(&it)){ 3143 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3144 bool emit_cis_created = false; 3145 switch (iso_stream->state){ 3146 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3147 if (status != ERROR_CODE_SUCCESS){ 3148 emit_cis_created = true; 3149 break; 3150 } 3151 if (iso_stream->max_sdu_c_to_p > 0){ 3152 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3153 } else { 3154 emit_cis_created = true; 3155 } 3156 break; 3157 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3158 iso_stream->state = HCI_ISO_STREAM_STATE_ACTIVE; 3159 emit_cis_created = true; 3160 break; 3161 default: 3162 break; 3163 } 3164 if (emit_cis_created){ 3165 hci_cis_handle_created(iso_stream, status); 3166 } 3167 } 3168 } else { 3169 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3170 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3171 if (cig != NULL) { 3172 // emit cis created if all ISO Paths have been created 3173 // assume we are central 3174 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3175 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3176 uint8_t cis_id = cig->params->cis_params[cis_index].cis_id; 3177 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3178 // if outgoing has been setup, or incoming was setup but outgoing not required 3179 if ((cis_direction == 1) || (outgoing_needed == false)){ 3180 // lookup iso stream by cig/cis 3181 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3182 while (btstack_linked_list_iterator_has_next(&it)) { 3183 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3184 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_id)){ 3185 hci_cis_handle_created(iso_stream, status); 3186 } 3187 } 3188 } 3189 // next state 3190 cig->state_vars.next_cis++; 3191 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3192 } 3193 } 3194 } 3195 break; 3196 } 3197 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3198 // lookup BIG by state 3199 btstack_linked_list_iterator_t it; 3200 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3201 while (btstack_linked_list_iterator_has_next(&it)) { 3202 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3203 uint8_t big_handle = big_sync->big_handle; 3204 switch (big_sync->state){ 3205 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3206 btstack_linked_list_iterator_remove(&it); 3207 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3208 return; 3209 default: 3210 btstack_linked_list_iterator_remove(&it); 3211 hci_emit_big_sync_stopped(big_handle); 3212 return; 3213 } 3214 } 3215 break; 3216 } 3217 #endif 3218 #endif 3219 default: 3220 break; 3221 } 3222 } 3223 3224 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3225 static void 3226 hci_iso_create_big_failed(const le_audio_big_t *big, uint8_t status) { 3227 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 3228 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3229 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 3230 hci_emit_big_created(big, status); 3231 } else { 3232 hci_emit_big_terminated(big); 3233 } 3234 } 3235 3236 static void hci_iso_big_sync_failed(const le_audio_big_sync_t *big_sync, uint8_t status) { 3237 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3238 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3239 hci_emit_big_sync_created(big_sync, status); 3240 } else { 3241 hci_emit_big_sync_stopped(big_sync->big_handle); 3242 } 3243 } 3244 #endif 3245 3246 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3247 UNUSED(size); 3248 3249 // get num cmd packets - limit to 1 to reduce complexity 3250 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3251 3252 // get opcode and command status 3253 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3254 3255 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3256 uint8_t status = hci_event_command_status_get_status(packet); 3257 #endif 3258 3259 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3260 bd_addr_type_t addr_type; 3261 bd_addr_t addr; 3262 #endif 3263 3264 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3265 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3266 #endif 3267 3268 switch (opcode){ 3269 #ifdef ENABLE_CLASSIC 3270 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3271 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3272 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3273 #endif 3274 #ifdef ENABLE_LE_CENTRAL 3275 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3276 #endif 3277 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3278 addr_type = hci_stack->outgoing_addr_type; 3279 memcpy(addr, hci_stack->outgoing_addr, 6); 3280 3281 // reset outgoing address info 3282 memset(hci_stack->outgoing_addr, 0, 6); 3283 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3284 3285 // on error 3286 if (status != ERROR_CODE_SUCCESS){ 3287 #ifdef ENABLE_LE_CENTRAL 3288 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3289 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3290 #endif 3291 // error => outgoing connection failed 3292 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3293 if (conn != NULL){ 3294 hci_handle_connection_failed(conn, status); 3295 } 3296 } 3297 break; 3298 #endif 3299 #ifdef ENABLE_CLASSIC 3300 case HCI_OPCODE_HCI_INQUIRY: 3301 if (status == ERROR_CODE_SUCCESS) { 3302 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3303 } else { 3304 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3305 } 3306 break; 3307 #endif 3308 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3309 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3310 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3311 if (status == ERROR_CODE_SUCCESS){ 3312 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3313 } else { 3314 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3315 } 3316 break; 3317 case HCI_OPCODE_HCI_LE_CREATE_BIG: 3318 if (status != ERROR_CODE_SUCCESS){ 3319 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3320 // get current big 3321 le_audio_big_t * big = hci_big_for_handle(hci_stack->iso_active_operation_group_id); 3322 if (big != NULL){ 3323 hci_iso_create_big_failed(big, status); 3324 } 3325 } 3326 break; 3327 case HCI_OPCODE_HCI_LE_BIG_CREATE_SYNC: 3328 if (status != ERROR_CODE_SUCCESS){ 3329 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3330 // get current big sync 3331 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(hci_stack->iso_active_operation_group_id); 3332 if (big_sync != NULL){ 3333 hci_iso_big_sync_failed(big_sync, status); 3334 } 3335 } 3336 break; 3337 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3338 default: 3339 break; 3340 } 3341 } 3342 3343 #ifdef ENABLE_BLE 3344 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3345 gap_event[0] = HCI_EVENT_META_GAP; 3346 gap_event[1] = 36 - 2; 3347 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3348 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3349 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3350 memcpy(&gap_event[3], &hci_event[3], 11); 3351 memset(&gap_event[14], 0, 12); 3352 memcpy(&gap_event[26], &hci_event[14], 7); 3353 memset(&gap_event[33], 0xff, 3); 3354 // Some Controllers incorrectly report a resolved identity address in HCI_SUBEVENT_LE_CONNECTION_COMPLETE. 3355 // If an address is resolved, we're working with it, but this event does not provide it. 3356 // As a workaround, we map identity addresses to regular addresses. 3357 gap_event[7] = gap_event[7] & 1; 3358 break; 3359 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3360 memcpy(&gap_event[3], &hci_event[3], 30); 3361 memset(&gap_event[33], 0xff, 3); 3362 break; 3363 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3364 memcpy(&gap_event[3], &hci_event[3], 33); 3365 break; 3366 default: 3367 btstack_unreachable(); 3368 break; 3369 } 3370 } 3371 3372 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3373 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3374 uint8_t gap_event[36]; 3375 hci_create_gap_connection_complete_event(hci_event, gap_event); 3376 3377 // read fields 3378 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3379 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3380 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3381 3382 // Connection management 3383 bd_addr_t addr; 3384 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3385 bd_addr_type_t addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3386 hci_con_handle_t con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3387 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3388 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3389 3390 #ifdef ENABLE_LE_CENTRAL 3391 // handle error: error is reported only to the initiator -> outgoing connection 3392 if (status){ 3393 3394 // handle cancelled outgoing connection 3395 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3396 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3397 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3398 bool connection_was_cancelled = false; 3399 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3400 connection_was_cancelled = true; 3401 // reset state 3402 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3403 // get outgoing connection conn struct for direct connect 3404 conn = gap_get_outgoing_le_connection(); 3405 // prepare restart if still active 3406 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3407 conn->state = SEND_CREATE_CONNECTION; 3408 } 3409 } 3410 3411 // free connection if cancelled by user (request == IDLE) 3412 bool cancelled_by_user = hci_stack->le_connecting_request == LE_CONNECTING_IDLE; 3413 if ((conn != NULL) && cancelled_by_user){ 3414 // remove entry 3415 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3416 btstack_memory_hci_connection_free( conn ); 3417 } 3418 3419 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE for: 3420 // - outgoing error not caused by connection cancel 3421 // - connection cancelled by user 3422 // by this, no event is emitted for intermediate connection cancel required filterlist modification 3423 if ((connection_was_cancelled == false) || cancelled_by_user){ 3424 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3425 } 3426 return; 3427 } 3428 #endif 3429 3430 // on success, both hosts receive connection complete event 3431 if (role == HCI_ROLE_MASTER){ 3432 #ifdef ENABLE_LE_CENTRAL 3433 // if we're master, it was an outgoing connection 3434 // note: no hci_connection_t object exists yet for connect with whitelist 3435 3436 // if an identity addresses was used without enhanced connection complete event, 3437 // the connection complete event contains the current random address of the peer device. 3438 // This random address is needed in the case of a re-pairing 3439 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3440 conn = gap_get_outgoing_le_connection(); 3441 // if outgoing connection object is available, check if identity address was used. 3442 // if yes, track resolved random address and provide rpa 3443 // note: we don't update hci le subevent connection complete 3444 if (conn != NULL){ 3445 if (hci_is_le_identity_address_type(conn->address_type)){ 3446 memcpy(&gap_event[20], &gap_event[8], 6); 3447 gap_event[7] = conn->address_type; 3448 reverse_bd_addr(conn->address, &gap_event[8]); 3449 } 3450 } 3451 } 3452 3453 // we're done with it 3454 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3455 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3456 #endif 3457 } else { 3458 #ifdef ENABLE_LE_PERIPHERAL 3459 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3460 if (hci_le_extended_advertising_supported()) { 3461 // advertisement state managed with HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED 3462 3463 // if advertisement set terminated event arrives before connection complete, connection struct has been prepared 3464 // set missing peer address + address type 3465 conn = hci_connection_for_handle(con_handle); 3466 if (conn != NULL){ 3467 memcpy(conn->address, addr, 6); 3468 conn->address_type = addr_type; 3469 } 3470 } 3471 else 3472 #endif 3473 { 3474 // if we're slave, it was an incoming connection and advertisements have stopped 3475 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3476 } 3477 #endif 3478 } 3479 3480 // LE connections are auto-accepted, so just create a connection if there isn't one already 3481 if (!conn){ 3482 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3483 } 3484 3485 // no memory, sorry. 3486 if (!conn){ 3487 return; 3488 } 3489 3490 conn->state = OPEN; 3491 conn->con_handle = con_handle; 3492 conn->le_connection_interval = conn_interval; 3493 3494 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3495 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3496 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES)){ 3497 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3498 } 3499 #endif 3500 3501 #ifdef ENABLE_LE_PERIPHERAL 3502 if (role == HCI_ROLE_SLAVE){ 3503 hci_update_advertisements_enabled_for_current_roles(); 3504 } 3505 #endif 3506 3507 // init unenhanced att bearer mtu 3508 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3509 conn->att_connection.mtu_exchanged = false; 3510 3511 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3512 3513 // restart timer 3514 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3515 // btstack_run_loop_add_timer(&conn->timeout); 3516 3517 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3518 3519 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3520 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3521 3522 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3523 hci_emit_nr_connections_changed(); 3524 } 3525 #endif 3526 3527 #ifdef ENABLE_CLASSIC 3528 static bool hci_ssp_security_level_possible_for_io_cap(gap_security_level_t level, uint8_t io_cap_local, uint8_t io_cap_remote){ 3529 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3530 // LEVEL_4 is tested by l2cap 3531 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3532 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3533 if (level >= LEVEL_3){ 3534 // MITM not possible without keyboard or display 3535 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3536 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3537 3538 // MITM possible if one side has keyboard and the other has keyboard or display 3539 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3540 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3541 3542 // MITM not possible if one side has only display and other side has no keyboard 3543 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3544 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3545 } 3546 // LEVEL 2 requires SSP, which is a given 3547 return true; 3548 } 3549 3550 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3551 // get requested security level 3552 gap_security_level_t requested_security_level = conn->requested_security_level; 3553 if (hci_stack->gap_secure_connections_only_mode){ 3554 requested_security_level = LEVEL_4; 3555 } 3556 3557 // assess security: LEVEL 4 requires SC 3558 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3559 if ((requested_security_level == LEVEL_4) && 3560 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3561 !hci_remote_sc_enabled(conn)){ 3562 log_info("Level 4 required, but SC not supported -> abort"); 3563 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3564 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3565 return; 3566 } 3567 3568 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3569 // - GAP/MOD/NBON/BV-02-C 3570 // - GAP/DM/NBON/BV-01-C 3571 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3572 switch (conn->io_cap_response_auth_req){ 3573 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3574 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3575 if (hci_stack->bondable == false){ 3576 log_info("Dedicated vs. non-bondable -> abort"); 3577 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3578 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3579 return; 3580 } 3581 default: 3582 break; 3583 } 3584 } 3585 3586 // assess security based on io capabilities 3587 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3588 // responder: fully validate io caps of both sides as well as OOB data 3589 bool security_possible = false; 3590 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3591 3592 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3593 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3594 // so we merge the OOB data availability 3595 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3596 if (conn->classic_oob_c_192 != NULL){ 3597 have_oob_data |= 1; 3598 } 3599 if (conn->classic_oob_c_256 != NULL){ 3600 have_oob_data |= 2; 3601 } 3602 // for up to Level 3, either P-192 as well as P-256 will do 3603 // if we don't support SC, then a) conn->classic_oob_c_256 will be NULL and b) remote should not report P-256 available 3604 // if remote does not SC, we should not receive P-256 data either 3605 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3606 security_possible = true; 3607 } 3608 // for Level 4, P-256 is needed 3609 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3610 security_possible = true; 3611 } 3612 #endif 3613 3614 if (security_possible == false){ 3615 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3616 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3617 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3618 return; 3619 } 3620 } else { 3621 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3622 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3623 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3624 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3625 log_info("Level 3+ required, but no input/output -> abort"); 3626 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3627 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3628 return; 3629 } 3630 #endif 3631 #endif 3632 } 3633 3634 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3635 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3636 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3637 } else { 3638 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3639 } 3640 #endif 3641 } 3642 3643 #endif 3644 3645 static void event_handler(uint8_t *packet, uint16_t size){ 3646 3647 uint16_t event_length = packet[1]; 3648 3649 // assert packet is complete 3650 if (size != (event_length + 2u)){ 3651 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3652 return; 3653 } 3654 3655 hci_con_handle_t handle; 3656 hci_connection_t * conn; 3657 int i; 3658 3659 #ifdef ENABLE_CLASSIC 3660 hci_link_type_t link_type; 3661 bd_addr_t addr; 3662 bd_addr_type_t addr_type; 3663 #endif 3664 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3665 hci_iso_stream_t * iso_stream; 3666 le_audio_big_t * big; 3667 le_audio_big_sync_t * big_sync; 3668 #endif 3669 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3670 btstack_linked_list_iterator_t it; 3671 #endif 3672 #if defined(ENABLE_LE_EXTENDED_ADVERTISING) && defined(ENABLE_LE_CENTRAL) 3673 uint8_t advertising_handle; 3674 #endif 3675 3676 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3677 3678 switch (hci_event_packet_get_type(packet)) { 3679 3680 case HCI_EVENT_COMMAND_COMPLETE: 3681 handle_command_complete_event(packet, size); 3682 break; 3683 3684 case HCI_EVENT_COMMAND_STATUS: 3685 handle_command_status_event(packet, size); 3686 break; 3687 3688 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3689 if (size < 3) return; 3690 uint16_t num_handles = packet[2]; 3691 if (size != (3u + num_handles * 4u)) return; 3692 #ifdef ENABLE_CLASSIC 3693 bool notify_sco = false; 3694 #endif 3695 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3696 bool notify_iso = false; 3697 #endif 3698 uint16_t offset = 3; 3699 for (i=0; i<num_handles;i++){ 3700 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3701 offset += 2u; 3702 uint16_t num_packets = little_endian_read_16(packet, offset); 3703 offset += 2u; 3704 3705 conn = hci_connection_for_handle(handle); 3706 if (conn != NULL) { 3707 3708 if (conn->num_packets_sent >= num_packets) { 3709 conn->num_packets_sent -= num_packets; 3710 } else { 3711 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3712 conn->num_packets_sent = 0; 3713 } 3714 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3715 #ifdef ENABLE_CLASSIC 3716 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3717 notify_sco = true; 3718 } 3719 #endif 3720 } 3721 3722 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3723 hci_controller_dump_packets(); 3724 #endif 3725 3726 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3727 if (conn == NULL){ 3728 iso_stream = hci_iso_stream_for_con_handle(handle); 3729 if (iso_stream != NULL){ 3730 if (iso_stream->num_packets_sent >= num_packets) { 3731 iso_stream->num_packets_sent -= num_packets; 3732 } else { 3733 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3734 iso_stream->num_packets_sent = 0; 3735 } 3736 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3737 big = hci_big_for_handle(iso_stream->group_id); 3738 if (big != NULL){ 3739 big->num_completed_timestamp_current_valid = true; 3740 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3741 } 3742 } 3743 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3744 num_packets, handle, iso_stream->num_packets_sent); 3745 notify_iso = true; 3746 } 3747 } 3748 #endif 3749 } 3750 3751 #ifdef ENABLE_CLASSIC 3752 if (notify_sco){ 3753 hci_notify_if_sco_can_send_now(); 3754 } 3755 #endif 3756 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3757 if (notify_iso){ 3758 hci_iso_notify_can_send_now(); 3759 } 3760 #endif 3761 break; 3762 } 3763 3764 #ifdef ENABLE_CLASSIC 3765 case HCI_EVENT_FLUSH_OCCURRED: 3766 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3767 handle = hci_event_flush_occurred_get_handle(packet); 3768 conn = hci_connection_for_handle(handle); 3769 if (conn) { 3770 log_info("Flush occurred, disconnect 0x%04x", handle); 3771 conn->state = SEND_DISCONNECT; 3772 } 3773 break; 3774 3775 case HCI_EVENT_INQUIRY_COMPLETE: 3776 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3777 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3778 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3779 hci_emit_btstack_event(event, sizeof(event), 1); 3780 } 3781 break; 3782 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3783 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3784 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3785 } 3786 break; 3787 case HCI_EVENT_CONNECTION_REQUEST: 3788 reverse_bd_addr(&packet[2], addr); 3789 link_type = (hci_link_type_t) packet[11]; 3790 3791 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3792 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3793 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3794 bd_addr_copy(hci_stack->decline_addr, addr); 3795 break; 3796 } 3797 3798 if (hci_stack->gap_classic_accept_callback != NULL){ 3799 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3800 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3801 bd_addr_copy(hci_stack->decline_addr, addr); 3802 break; 3803 } 3804 } 3805 3806 // TODO: eval COD 8-10 3807 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3808 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3809 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3810 if (!conn) { 3811 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3812 } 3813 if (!conn) { 3814 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3815 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3816 bd_addr_copy(hci_stack->decline_addr, addr); 3817 hci_run(); 3818 // avoid event to higher layer 3819 return; 3820 } 3821 conn->state = RECEIVED_CONNECTION_REQUEST; 3822 // store info about eSCO 3823 if (link_type == HCI_LINK_TYPE_ESCO){ 3824 conn->remote_supported_features[0] |= 1; 3825 } 3826 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3827 if (addr_type == BD_ADDR_TYPE_SCO){ 3828 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3829 // ACL exists unless fuzzing 3830 if (acl_conn != NULL) { 3831 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3832 } 3833 } 3834 hci_run(); 3835 break; 3836 3837 case HCI_EVENT_CONNECTION_COMPLETE: 3838 // Connection management 3839 reverse_bd_addr(&packet[5], addr); 3840 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3841 addr_type = BD_ADDR_TYPE_ACL; 3842 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3843 if (conn) { 3844 switch (conn->state){ 3845 // expected states 3846 case ACCEPTED_CONNECTION_REQUEST: 3847 case SENT_CREATE_CONNECTION: 3848 break; 3849 // unexpected state -> ignore 3850 default: 3851 // don't forward event to app 3852 return; 3853 } 3854 if (!packet[2]){ 3855 conn->state = OPEN; 3856 conn->con_handle = little_endian_read_16(packet, 3); 3857 3858 // trigger write supervision timeout if we're master 3859 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3860 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3861 } 3862 3863 // trigger write automatic flush timeout 3864 if (hci_stack->automatic_flush_timeout != 0){ 3865 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3866 } 3867 3868 // restart timer 3869 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3870 btstack_run_loop_add_timer(&conn->timeout); 3871 3872 // trigger remote features for dedicated bonding 3873 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3874 hci_trigger_remote_features_for_connection(conn); 3875 } 3876 3877 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3878 3879 hci_emit_nr_connections_changed(); 3880 } else { 3881 // connection failed 3882 hci_handle_connection_failed(conn, packet[2]); 3883 } 3884 } 3885 break; 3886 3887 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3888 reverse_bd_addr(&packet[5], addr); 3889 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3890 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3891 3892 // SCO exists unless fuzzer 3893 if (conn == NULL) break; 3894 3895 if (packet[2] != ERROR_CODE_SUCCESS){ 3896 // connection failed, remove entry 3897 hci_handle_connection_failed(conn, packet[2]); 3898 break; 3899 } 3900 3901 conn->state = OPEN; 3902 conn->con_handle = little_endian_read_16(packet, 3); 3903 3904 // update sco payload length for eSCO connections 3905 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3906 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3907 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3908 } 3909 3910 #ifdef ENABLE_SCO_OVER_HCI 3911 // update SCO 3912 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3913 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3914 } 3915 // trigger can send now 3916 if (hci_have_usb_transport()){ 3917 hci_stack->sco_can_send_now = true; 3918 } 3919 3920 // setup implicit sco flow control 3921 conn->sco_tx_ready = 0; 3922 conn->sco_tx_active = 0; 3923 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3924 3925 #endif 3926 #ifdef HAVE_SCO_TRANSPORT 3927 // configure sco transport 3928 if (hci_stack->sco_transport != NULL){ 3929 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3930 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3931 } 3932 #endif 3933 break; 3934 3935 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3936 handle = little_endian_read_16(packet, 3); 3937 conn = hci_connection_for_handle(handle); 3938 if (!conn) break; 3939 if (!packet[2]){ 3940 const uint8_t * features = &packet[5]; 3941 hci_handle_remote_features_page_0(conn, features); 3942 3943 // read extended features if possible 3944 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3945 && ((conn->remote_supported_features[0] & 2) != 0)) { 3946 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3947 break; 3948 } 3949 } 3950 hci_handle_remote_features_received(conn); 3951 break; 3952 3953 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3954 handle = little_endian_read_16(packet, 3); 3955 conn = hci_connection_for_handle(handle); 3956 if (!conn) break; 3957 // status = ok, page = 1 3958 if (!packet[2]) { 3959 uint8_t page_number = packet[5]; 3960 uint8_t maximum_page_number = packet[6]; 3961 const uint8_t * features = &packet[7]; 3962 bool done = false; 3963 switch (page_number){ 3964 case 1: 3965 hci_handle_remote_features_page_1(conn, features); 3966 if (maximum_page_number >= 2){ 3967 // get Secure Connections (Controller) from Page 2 if available 3968 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3969 } else { 3970 // otherwise, assume SC (Controller) == SC (Host) 3971 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3972 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3973 } 3974 done = true; 3975 } 3976 break; 3977 case 2: 3978 hci_handle_remote_features_page_2(conn, features); 3979 done = true; 3980 break; 3981 default: 3982 break; 3983 } 3984 if (!done) break; 3985 } 3986 hci_handle_remote_features_received(conn); 3987 break; 3988 3989 case HCI_EVENT_LINK_KEY_REQUEST: 3990 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3991 hci_event_link_key_request_get_bd_addr(packet, addr); 3992 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3993 if (!conn) break; 3994 3995 // lookup link key in db if not cached 3996 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3997 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3998 } 3999 4000 // response sent by hci_run() 4001 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 4002 #endif 4003 break; 4004 4005 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 4006 hci_event_link_key_request_get_bd_addr(packet, addr); 4007 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4008 if (!conn) break; 4009 4010 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 4011 4012 // CVE-2020-26555: ignore NULL link key 4013 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 4014 if (btstack_is_null(&packet[8], 16)) break; 4015 4016 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 4017 // Change Connection Encryption keeps link key type 4018 if (link_key_type != CHANGED_COMBINATION_KEY){ 4019 conn->link_key_type = link_key_type; 4020 } 4021 4022 // cache link key. link keys stored in little-endian format for legacy reasons 4023 memcpy(&conn->link_key, &packet[8], 16); 4024 4025 // only store link key: 4026 // - if bondable enabled 4027 if (hci_stack->bondable == false) break; 4028 // - if at least one side requests bonding during the IO Capabilities exchange. 4029 // Note: we drop bonding flag in acceptor role if remote doesn't request it 4030 bool bonding_local = conn->io_cap_request_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 4031 bool bonding_remote = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 4032 if ((bonding_local == false) && (bonding_remote == false)) break; 4033 // - if security level sufficient 4034 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 4035 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 4036 break; 4037 } 4038 4039 case HCI_EVENT_PIN_CODE_REQUEST: 4040 hci_event_pin_code_request_get_bd_addr(packet, addr); 4041 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4042 if (!conn) break; 4043 4044 hci_pairing_started(conn, false); 4045 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 4046 if (!hci_stack->bondable ){ 4047 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4048 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 4049 hci_run(); 4050 return; 4051 } 4052 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 4053 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 4054 log_info("Level 4 required, but SC not supported -> abort"); 4055 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4056 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4057 hci_run(); 4058 return; 4059 } 4060 break; 4061 4062 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 4063 hci_event_io_capability_response_get_bd_addr(packet, addr); 4064 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4065 if (!conn) break; 4066 4067 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 4068 hci_pairing_started(conn, true); 4069 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 4070 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 4071 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4072 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 4073 #endif 4074 break; 4075 4076 case HCI_EVENT_IO_CAPABILITY_REQUEST: 4077 hci_event_io_capability_response_get_bd_addr(packet, addr); 4078 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4079 if (!conn) break; 4080 4081 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 4082 hci_connection_timestamp(conn); 4083 hci_pairing_started(conn, true); 4084 break; 4085 4086 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4087 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4088 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4089 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4090 if (!conn) break; 4091 4092 hci_connection_timestamp(conn); 4093 4094 hci_pairing_started(conn, true); 4095 4096 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4097 break; 4098 #endif 4099 4100 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4101 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4102 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4103 if (!conn) break; 4104 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4105 if (hci_stack->ssp_auto_accept){ 4106 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4107 }; 4108 } else { 4109 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4110 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4111 // don't forward event to app 4112 hci_run(); 4113 return; 4114 } 4115 break; 4116 4117 case HCI_EVENT_USER_PASSKEY_REQUEST: 4118 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4119 if (hci_stack->ssp_auto_accept){ 4120 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4121 }; 4122 break; 4123 4124 case HCI_EVENT_MODE_CHANGE: 4125 handle = hci_event_mode_change_get_handle(packet); 4126 conn = hci_connection_for_handle(handle); 4127 if (!conn) break; 4128 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4129 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4130 break; 4131 #endif 4132 4133 case HCI_EVENT_ENCRYPTION_CHANGE: 4134 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4135 handle = hci_event_encryption_change_get_connection_handle(packet); 4136 conn = hci_connection_for_handle(handle); 4137 if (!conn) break; 4138 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4139 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4140 if (encryption_enabled){ 4141 if (hci_is_le_connection(conn)){ 4142 // For LE, we accept connection as encrypted 4143 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4144 } 4145 #ifdef ENABLE_CLASSIC 4146 else { 4147 4148 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4149 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4150 bool connected_uses_aes_ccm = encryption_enabled == 2; 4151 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4152 #ifdef ENABLE_TESTING_SUPPORT 4153 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4154 // - GAP/SEC/SEM/BI-31-C 4155 // - GAP/SEC/SEM/BI-32-C 4156 // - GAP/SEC/SEM/BI-33-C 4157 4158 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4159 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4160 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4161 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4162 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4163 } 4164 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4165 conn->link_key_type, new_link_key_type); 4166 conn->link_key_type = new_link_key_type; 4167 #else 4168 log_info("SC during pairing, but only E0 now -> abort"); 4169 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4170 break; 4171 #endif 4172 } 4173 4174 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4175 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4176 if (connected_uses_aes_ccm){ 4177 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4178 } 4179 #else 4180 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4181 // with encryption key size > hci_stack->gap_required_encryption_key_size 4182 // for all operations that require any security. See BIAS attacks. 4183 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4184 #endif 4185 // validate encryption key size 4186 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4187 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4188 // already got encryption key size 4189 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4190 } else { 4191 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4192 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4193 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4194 } else { 4195 // if not, pretend everything is perfect 4196 hci_handle_read_encryption_key_size_complete(conn, 16); 4197 } 4198 } 4199 } 4200 #endif 4201 } else { 4202 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4203 } 4204 } else { 4205 #ifdef ENABLE_CLASSIC 4206 if (!hci_is_le_connection(conn)){ 4207 uint8_t status = hci_event_encryption_change_get_status(packet); 4208 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4209 conn->bonding_flags &= ~BONDING_DEDICATED; 4210 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4211 conn->bonding_status = status; 4212 } 4213 // trigger security update -> level 0 4214 hci_handle_mutual_authentication_completed(conn); 4215 } 4216 #endif 4217 } 4218 4219 break; 4220 4221 #ifdef ENABLE_CLASSIC 4222 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4223 handle = hci_event_authentication_complete_get_connection_handle(packet); 4224 conn = hci_connection_for_handle(handle); 4225 if (!conn) break; 4226 4227 // clear authentication active flag 4228 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4229 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4230 4231 // authenticated only if auth status == 0 4232 if (hci_event_authentication_complete_get_status(packet) == 0){ 4233 // authenticated 4234 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4235 4236 // If not already encrypted, start encryption 4237 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4238 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4239 break; 4240 } 4241 } 4242 4243 // emit updated security level (will be 0 if not authenticated) 4244 hci_handle_mutual_authentication_completed(conn); 4245 break; 4246 4247 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4248 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4249 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4250 if (!conn) break; 4251 4252 // treat successfully paired connection as authenticated 4253 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4254 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4255 } 4256 4257 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4258 break; 4259 #endif 4260 4261 // HCI_EVENT_DISCONNECTION_COMPLETE 4262 // has been split, to first notify stack before shutting connection down 4263 // see end of function, too. 4264 case HCI_EVENT_DISCONNECTION_COMPLETE: 4265 if (packet[2]) break; // status != 0 4266 handle = little_endian_read_16(packet, 3); 4267 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4268 if (hci_stack->acl_fragmentation_total_size > 0u) { 4269 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4270 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4271 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4272 hci_stack->acl_fragmentation_total_size = 0; 4273 hci_stack->acl_fragmentation_pos = 0; 4274 if (release_buffer){ 4275 hci_release_packet_buffer(); 4276 } 4277 } 4278 } 4279 4280 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4281 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4282 if (hci_stack->iso_fragmentation_total_size > 0u) { 4283 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4284 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4285 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4286 hci_stack->iso_fragmentation_total_size = 0; 4287 hci_stack->iso_fragmentation_pos = 0; 4288 if (release_buffer){ 4289 hci_release_packet_buffer(); 4290 } 4291 } 4292 } 4293 4294 // finalize iso stream for CIS handle 4295 iso_stream = hci_iso_stream_for_con_handle(handle); 4296 if (iso_stream != NULL){ 4297 hci_iso_stream_finalize(iso_stream); 4298 break; 4299 } 4300 #endif 4301 4302 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4303 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4304 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4305 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4306 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4307 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4308 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4309 hci_stack->num_cmd_packets = 1; 4310 } 4311 #endif 4312 4313 conn = hci_connection_for_handle(handle); 4314 if (!conn) break; 4315 #ifdef ENABLE_CLASSIC 4316 // pairing failed if it was ongoing 4317 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4318 #endif 4319 4320 // emit dedicated bonding event 4321 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4322 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4323 } 4324 4325 // mark connection for shutdown, stop timers, reset state 4326 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4327 hci_connection_stop_timer(conn); 4328 hci_connection_init(conn); 4329 4330 #ifdef ENABLE_BLE 4331 #ifdef ENABLE_LE_PERIPHERAL 4332 // re-enable advertisements for le connections if active 4333 if (hci_is_le_connection(conn)){ 4334 hci_update_advertisements_enabled_for_current_roles(); 4335 } 4336 #endif 4337 #endif 4338 break; 4339 4340 case HCI_EVENT_HARDWARE_ERROR: 4341 log_error("Hardware Error: 0x%02x", packet[2]); 4342 if (hci_stack->hardware_error_callback){ 4343 (*hci_stack->hardware_error_callback)(packet[2]); 4344 } else { 4345 // if no special requests, just reboot stack 4346 hci_power_control_off(); 4347 hci_power_control_on(); 4348 } 4349 break; 4350 4351 #ifdef ENABLE_CLASSIC 4352 case HCI_EVENT_ROLE_CHANGE: 4353 if (packet[2]) break; // status != 0 4354 reverse_bd_addr(&packet[3], addr); 4355 addr_type = BD_ADDR_TYPE_ACL; 4356 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4357 if (!conn) break; 4358 conn->role = (hci_role_t) packet[9]; 4359 break; 4360 #endif 4361 4362 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4363 // release packet buffer only for asynchronous transport and if there are not further fragments 4364 if (hci_transport_synchronous()) { 4365 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4366 return; // instead of break: to avoid re-entering hci_run() 4367 } 4368 hci_stack->acl_fragmentation_tx_active = 0; 4369 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4370 hci_stack->iso_fragmentation_tx_active = 0; 4371 if (hci_stack->iso_fragmentation_total_size) break; 4372 #endif 4373 if (hci_stack->acl_fragmentation_total_size) break; 4374 4375 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4376 hci_stack->hci_packet_buffer_reserved = false; 4377 4378 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4379 hci_iso_notify_can_send_now(); 4380 #endif 4381 // L2CAP receives this event via the hci_emit_event below 4382 4383 #ifdef ENABLE_CLASSIC 4384 // For SCO, we do the can_send_now_check here 4385 hci_notify_if_sco_can_send_now(); 4386 #endif 4387 break; 4388 4389 #ifdef ENABLE_CLASSIC 4390 case HCI_EVENT_SCO_CAN_SEND_NOW: 4391 // For SCO, we do the can_send_now_check here 4392 hci_stack->sco_can_send_now = true; 4393 hci_notify_if_sco_can_send_now(); 4394 return; 4395 4396 // explode inquiry results for easier consumption 4397 case HCI_EVENT_INQUIRY_RESULT: 4398 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4399 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4400 gap_inquiry_explode(packet, size); 4401 break; 4402 #endif 4403 4404 #ifdef ENABLE_BLE 4405 case HCI_EVENT_LE_META: 4406 switch (packet[2]){ 4407 #ifdef ENABLE_LE_CENTRAL 4408 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4409 if (!hci_stack->le_scanning_enabled) break; 4410 le_handle_advertisement_report(packet, size); 4411 break; 4412 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4413 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4414 if (!hci_stack->le_scanning_enabled) break; 4415 le_handle_extended_advertisement_report(packet, size); 4416 break; 4417 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4418 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4419 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4420 break; 4421 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4422 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4423 if (advertising_handle == LE_EXTENDED_ADVERTISING_LEGACY_HANDLE){ 4424 // legacy advertisements 4425 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4426 hci_update_advertisements_enabled_for_current_roles(); 4427 } else { 4428 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4429 while (btstack_linked_list_iterator_has_next(&it)) { 4430 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4431 if (advertising_set->advertising_handle == advertising_handle){ 4432 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4433 } 4434 } 4435 } 4436 // event may come before le connection complete and announces new connection 4437 if (hci_subevent_le_advertising_set_terminated_get_status(packet) == ERROR_CODE_SUCCESS){ 4438 handle = hci_subevent_le_advertising_set_terminated_get_connection_handle(packet); 4439 conn = hci_connection_for_handle(handle); 4440 if (conn == NULL){ 4441 // use placeholder address for peer, will be overwritten in hci_handle_le_connection_complete_event() 4442 bd_addr_t addr; 4443 memset(addr, 0, 6); 4444 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_UNKNOWN, HCI_ROLE_SLAVE); 4445 if (conn != NULL){ 4446 conn->state = ANNOUNCED; 4447 conn->con_handle = handle; 4448 } 4449 } 4450 } 4451 break; 4452 #endif 4453 #endif 4454 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4455 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4456 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4457 hci_handle_le_connection_complete_event(packet); 4458 break; 4459 4460 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4461 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4462 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4463 conn = hci_connection_for_handle(handle); 4464 if (!conn) break; 4465 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4466 break; 4467 4468 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4469 // connection 4470 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4471 conn = hci_connection_for_handle(handle); 4472 if (conn) { 4473 // read arguments 4474 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4475 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4476 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4477 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4478 4479 // validate against current connection parameter range 4480 le_connection_parameter_range_t existing_range; 4481 gap_get_connection_parameter_range(&existing_range); 4482 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4483 if (update_parameter){ 4484 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4485 conn->le_conn_interval_min = le_conn_interval_min; 4486 conn->le_conn_interval_max = le_conn_interval_max; 4487 conn->le_conn_latency = le_conn_latency; 4488 conn->le_supervision_timeout = le_supervision_timeout; 4489 } else { 4490 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4491 } 4492 } 4493 break; 4494 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4495 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4496 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4497 conn = hci_connection_for_handle(handle); 4498 if (conn) { 4499 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4500 } 4501 break; 4502 #endif 4503 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4504 case HCI_SUBEVENT_LE_CIS_REQUEST: 4505 // incoming CIS request, allocate iso stream object and cache metadata 4506 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4507 hci_subevent_le_cis_request_get_cig_id(packet), 4508 hci_subevent_le_cis_request_get_cis_id(packet)); 4509 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4510 if (iso_stream != NULL){ 4511 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4512 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4513 } 4514 break; 4515 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4516 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4517 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4518 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4519 iso_stream = hci_iso_stream_for_con_handle(handle); 4520 btstack_assert(iso_stream != NULL); 4521 // track connection info 4522 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4523 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4524 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4525 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4526 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4527 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4528 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4529 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4530 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4531 // CIS Accept by Peripheral 4532 if (status == ERROR_CODE_SUCCESS){ 4533 if (iso_stream->max_sdu_p_to_c > 0){ 4534 // we're peripheral and we will send data 4535 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4536 } else { 4537 // we're peripheral and we will only receive data 4538 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4539 } 4540 } else { 4541 hci_cis_handle_created(iso_stream, status); 4542 } 4543 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4544 } else { 4545 // CIG Setup by Central 4546 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4547 btstack_assert(cig != NULL); 4548 // update iso stream state 4549 if (status == ERROR_CODE_SUCCESS){ 4550 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4551 } else { 4552 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4553 } 4554 // update cig state 4555 for (i=0;i<cig->num_cis;i++){ 4556 if (cig->cis_con_handles[i] == handle){ 4557 cig->cis_setup_active[i] = false; 4558 if (status == ERROR_CODE_SUCCESS){ 4559 cig->cis_established[i] = true; 4560 } else { 4561 hci_cis_handle_created(iso_stream, status); 4562 } 4563 } 4564 } 4565 4566 // trigger iso path setup if complete 4567 bool cis_setup_active = false; 4568 for (i=0;i<cig->num_cis;i++){ 4569 cis_setup_active |= cig->cis_setup_active[i]; 4570 } 4571 if (cis_setup_active == false){ 4572 cig->state_vars.next_cis = 0; 4573 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4574 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4575 } 4576 } 4577 } 4578 break; 4579 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4580 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4581 big = hci_big_for_handle(packet[4]); 4582 if (big != NULL){ 4583 uint8_t status = packet[3]; 4584 if (status == ERROR_CODE_SUCCESS){ 4585 // store bis_con_handles and trigger iso path setup 4586 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4587 4588 for (i=0;i<num_bis;i++){ 4589 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4590 big->bis_con_handles[i] = bis_handle; 4591 // assign bis handle 4592 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4593 while (btstack_linked_list_iterator_has_next(&it)){ 4594 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4595 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4596 (iso_stream->group_id == big->big_handle)){ 4597 iso_stream->cis_handle = bis_handle; 4598 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4599 break; 4600 } 4601 } 4602 } 4603 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4604 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4605 big->state_vars.next_bis = 0; 4606 } 4607 } else { 4608 // create BIG failed or has been stopped by us 4609 hci_iso_create_big_failed(big, status); 4610 } 4611 } 4612 break; 4613 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4614 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4615 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4616 if (big != NULL){ 4617 // finalize associated ISO streams 4618 4619 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4620 while (btstack_linked_list_iterator_has_next(&it)){ 4621 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4622 if (iso_stream->group_id == big->big_handle){ 4623 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4624 btstack_linked_list_iterator_remove(&it); 4625 btstack_memory_hci_iso_stream_free(iso_stream); 4626 } 4627 } 4628 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4629 switch (big->state){ 4630 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4631 hci_emit_big_created(big, big->state_vars.status); 4632 break; 4633 default: 4634 hci_emit_big_terminated(big); 4635 break; 4636 } 4637 } 4638 break; 4639 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4640 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4641 big_sync = hci_big_sync_for_handle(packet[4]); 4642 if (big_sync != NULL){ 4643 uint8_t status = packet[3]; 4644 if (status == ERROR_CODE_SUCCESS){ 4645 // store bis_con_handles and trigger iso path setup 4646 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4647 for (i=0;i<num_bis;i++){ 4648 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4649 big_sync->bis_con_handles[i] = bis_handle; 4650 // setup iso_stream_t 4651 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4652 while (btstack_linked_list_iterator_has_next(&it)){ 4653 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4654 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4655 (iso_stream->group_id == big_sync->big_handle)){ 4656 iso_stream->cis_handle = bis_handle; 4657 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4658 break; 4659 } 4660 } 4661 } 4662 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4663 // trigger iso path setup 4664 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4665 big_sync->state_vars.next_bis = 0; 4666 } 4667 } else { 4668 // create BIG Sync failed or has been stopped by us 4669 hci_iso_big_sync_failed(big_sync, status); 4670 } 4671 } 4672 break; 4673 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4674 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4675 big_sync = hci_big_sync_for_handle(packet[4]); 4676 if (big_sync != NULL){ 4677 uint8_t big_handle = packet[4]; 4678 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4679 hci_emit_big_sync_stopped(big_handle); 4680 } 4681 break; 4682 #endif 4683 default: 4684 break; 4685 } 4686 break; 4687 #endif 4688 case HCI_EVENT_VENDOR_SPECIFIC: 4689 // Vendor specific commands often create vendor specific event instead of num completed packets 4690 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4691 switch (hci_stack->manufacturer){ 4692 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4693 hci_stack->num_cmd_packets = 1; 4694 break; 4695 default: 4696 break; 4697 } 4698 break; 4699 default: 4700 break; 4701 } 4702 4703 handle_event_for_current_stack_state(packet, size); 4704 4705 // notify upper stack 4706 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4707 4708 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4709 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4710 handle = little_endian_read_16(packet, 3); 4711 hci_connection_t * aConn = hci_connection_for_handle(handle); 4712 // discard connection if app did not trigger a reconnect in the event handler 4713 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4714 hci_shutdown_connection(aConn); 4715 } 4716 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4717 hci_controller_dump_packets(); 4718 #endif 4719 } 4720 4721 // execute main loop 4722 hci_run(); 4723 } 4724 4725 #ifdef ENABLE_CLASSIC 4726 4727 static void sco_handler(uint8_t * packet, uint16_t size){ 4728 // lookup connection struct 4729 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4730 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4731 if (!conn) return; 4732 4733 #ifdef ENABLE_SCO_OVER_HCI 4734 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4735 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4736 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4737 packet[2] = 0x3c; 4738 memmove(&packet[3], &packet[23], 63); 4739 size = 63; 4740 } 4741 } 4742 4743 if (hci_have_usb_transport()){ 4744 // Nothing to do 4745 } else { 4746 // log_debug("sco flow %u, handle 0x%04x, packets sent %u, bytes send %u", hci_stack->synchronous_flow_control_enabled, (int) con_handle, conn->num_packets_sent, conn->num_sco_bytes_sent); 4747 if (hci_stack->synchronous_flow_control_enabled == 0){ 4748 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4749 uint8_t max_sco_packets = (uint8_t) btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4750 if (conn->sco_tx_active == 0){ 4751 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4752 conn->sco_tx_active = 1; 4753 conn->sco_tx_ready = max_sco_packets; 4754 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4755 hci_notify_if_sco_can_send_now(); 4756 } 4757 } else { 4758 if (conn->sco_tx_ready < max_sco_packets){ 4759 conn->sco_tx_ready++; 4760 } 4761 hci_notify_if_sco_can_send_now(); 4762 } 4763 } 4764 } 4765 #endif 4766 4767 // deliver to app 4768 if (hci_stack->sco_packet_handler) { 4769 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4770 } 4771 4772 #ifdef HAVE_SCO_TRANSPORT 4773 // We can send one packet for each received packet 4774 conn->sco_tx_ready++; 4775 hci_notify_if_sco_can_send_now(); 4776 #endif 4777 4778 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4779 conn->num_packets_completed++; 4780 hci_stack->host_completed_packets = 1; 4781 hci_run(); 4782 #endif 4783 } 4784 #endif 4785 4786 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4787 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4788 // propagate ISO packets received as ACL 4789 hci_iso_stream_t * iso_stream = NULL; 4790 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4791 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4792 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4793 if (iso_stream != NULL){ 4794 packet_type = HCI_ISO_DATA_PACKET; 4795 } 4796 } 4797 #endif 4798 4799 // don't log internal events unless requested 4800 bool internal_event = (packet_type == HCI_EVENT_PACKET) && (hci_event_packet_get_type(packet) >= BTSTACK_EVENT_FIRST); 4801 bool log_packet = internal_event == false; 4802 #ifdef ENABLE_LOG_BTSTACK_EVENTS 4803 log_packet = true; 4804 #endif 4805 if (log_packet){ 4806 hci_dump_packet(packet_type, 1, packet, size); 4807 } 4808 4809 switch (packet_type) { 4810 case HCI_EVENT_PACKET: 4811 event_handler(packet, size); 4812 break; 4813 case HCI_ACL_DATA_PACKET: 4814 acl_handler(packet, size); 4815 break; 4816 #ifdef ENABLE_CLASSIC 4817 case HCI_SCO_DATA_PACKET: 4818 sco_handler(packet, size); 4819 break; 4820 #endif 4821 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4822 case HCI_ISO_DATA_PACKET: 4823 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4824 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4825 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4826 } 4827 hci_iso_packet_handler(iso_stream, packet, size); 4828 break; 4829 #endif 4830 default: 4831 break; 4832 } 4833 } 4834 4835 /** 4836 * @brief Add event packet handler. 4837 */ 4838 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4839 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4840 } 4841 4842 /** 4843 * @brief Remove event packet handler. 4844 */ 4845 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4846 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4847 } 4848 4849 /** Register HCI packet handlers */ 4850 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4851 hci_stack->acl_packet_handler = handler; 4852 } 4853 4854 #ifdef ENABLE_CLASSIC 4855 /** 4856 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4857 */ 4858 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4859 hci_stack->sco_packet_handler = handler; 4860 } 4861 #endif 4862 4863 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4864 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4865 hci_stack->iso_packet_handler = handler; 4866 } 4867 #endif 4868 4869 static void hci_state_reset(void){ 4870 // no connections yet 4871 hci_stack->connections = NULL; 4872 4873 // keep discoverable/connectable as this has been requested by the client(s) 4874 // hci_stack->discoverable = 0; 4875 // hci_stack->connectable = 0; 4876 // hci_stack->bondable = 1; 4877 // hci_stack->own_addr_type = 0; 4878 4879 // buffer is free 4880 hci_stack->hci_packet_buffer_reserved = false; 4881 4882 // no pending cmds 4883 hci_stack->decline_reason = 0; 4884 4885 hci_stack->secure_connections_active = false; 4886 4887 #ifdef ENABLE_CLASSIC 4888 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4889 4890 hci_stack->gap_tasks_classic = 4891 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4892 GAP_TASK_SET_CLASS_OF_DEVICE | 4893 GAP_TASK_SET_LOCAL_NAME | 4894 GAP_TASK_SET_EIR_DATA | 4895 GAP_TASK_WRITE_SCAN_ENABLE | 4896 GAP_TASK_WRITE_PAGE_TIMEOUT; 4897 #endif 4898 4899 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4900 hci_stack->classic_read_local_oob_data = false; 4901 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4902 #endif 4903 4904 // LE 4905 #ifdef ENABLE_BLE 4906 memset(hci_stack->le_random_address, 0, 6); 4907 hci_stack->le_random_address_set = 0; 4908 #endif 4909 #ifdef ENABLE_LE_CENTRAL 4910 hci_stack->le_scanning_active = false; 4911 hci_stack->le_scanning_param_update = true; 4912 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4913 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4914 hci_stack->le_whitelist_capacity = 0; 4915 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4916 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4917 #endif 4918 #endif 4919 #ifdef ENABLE_LE_PERIPHERAL 4920 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4921 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4922 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4923 } 4924 if (hci_stack->le_advertisements_data != NULL){ 4925 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4926 } 4927 #endif 4928 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4929 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4930 #endif 4931 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4932 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4933 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4934 #endif 4935 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4936 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4937 #endif 4938 } 4939 4940 #ifdef ENABLE_CLASSIC 4941 /** 4942 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4943 */ 4944 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4945 // store and open remote device db 4946 hci_stack->link_key_db = link_key_db; 4947 if (hci_stack->link_key_db) { 4948 hci_stack->link_key_db->open(); 4949 } 4950 } 4951 #endif 4952 4953 void hci_init(const hci_transport_t *transport, const void *config){ 4954 4955 #ifdef HAVE_MALLOC 4956 if (!hci_stack) { 4957 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4958 } 4959 btstack_assert(hci_stack != NULL); 4960 #else 4961 hci_stack = &hci_stack_static; 4962 #endif 4963 memset(hci_stack, 0, sizeof(hci_stack_t)); 4964 4965 // reference to use transport layer implementation 4966 hci_stack->hci_transport = transport; 4967 4968 // reference to used config 4969 hci_stack->config = config; 4970 4971 // setup pointer for outgoing packet buffer 4972 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4973 4974 // max acl payload size defined in config.h 4975 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4976 4977 // register packet handlers with transport 4978 transport->register_packet_handler(&packet_handler); 4979 4980 hci_stack->state = HCI_STATE_OFF; 4981 4982 // class of device 4983 hci_stack->class_of_device = 0x007a020c; // Smartphone 4984 4985 // bondable by default 4986 hci_stack->bondable = 1; 4987 4988 #ifdef ENABLE_CLASSIC 4989 // classic name 4990 hci_stack->local_name = default_classic_name; 4991 4992 // Master slave policy 4993 hci_stack->master_slave_policy = 1; 4994 4995 // Allow Role Switch 4996 hci_stack->allow_role_switch = 1; 4997 4998 // Default / minimum security level = 2 4999 hci_stack->gap_security_level = LEVEL_2; 5000 5001 // Default Security Mode 4 5002 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 5003 5004 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 5005 hci_stack->gap_required_encyrption_key_size = 7; 5006 5007 // Link Supervision Timeout 5008 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 5009 5010 // Page Timeout 5011 hci_stack->page_timeout = 0x6000; // ca. 15 sec 5012 5013 // All ACL packet types are enabled 5014 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 5015 #endif 5016 5017 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 5018 hci_stack->ssp_enable = 1; 5019 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 5020 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 5021 hci_stack->ssp_auto_accept = 1; 5022 5023 // Secure Connections: enable (requires support from Controller) 5024 hci_stack->secure_connections_enable = true; 5025 5026 // voice setting - signed 16 bit pcm data with CVSD over the air 5027 hci_stack->sco_voice_setting = 0x60; 5028 5029 #ifdef ENABLE_BLE 5030 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 5031 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 5032 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 5033 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 5034 hci_stack->le_connection_latency = 4; // 4 5035 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 5036 hci_stack->le_minimum_ce_length = 0; // 0 ms 5037 hci_stack->le_maximum_ce_length = 0; // 0 ms 5038 #endif 5039 5040 #ifdef ENABLE_LE_CENTRAL 5041 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 5042 5043 // default LE Scanning 5044 hci_stack->le_scan_type = 0x01; // active 5045 hci_stack->le_scan_interval = 0x1e0; // 300 ms 5046 hci_stack->le_scan_window = 0x30; // 30 ms 5047 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 5048 #endif 5049 5050 #ifdef ENABLE_LE_PERIPHERAL 5051 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 5052 5053 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 5054 hci_stack->le_advertisements_interval_min = 0x0800; 5055 hci_stack->le_advertisements_interval_max = 0x0800; 5056 hci_stack->le_advertisements_type = 0; 5057 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 5058 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 5059 hci_stack->le_advertisements_channel_map = 0x07; 5060 hci_stack->le_advertisements_filter_policy = 0; 5061 #endif 5062 5063 // connection parameter range used to answer connection parameter update requests in l2cap 5064 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 5065 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 5066 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 5067 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 5068 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 5069 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 5070 5071 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5072 hci_stack->iso_packets_to_queue = 1; 5073 #endif 5074 5075 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5076 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 5077 #endif 5078 5079 hci_state_reset(); 5080 } 5081 5082 void hci_deinit(void){ 5083 btstack_run_loop_remove_timer(&hci_stack->timeout); 5084 #ifdef HAVE_MALLOC 5085 if (hci_stack) { 5086 free(hci_stack); 5087 } 5088 #endif 5089 hci_stack = NULL; 5090 5091 #ifdef ENABLE_CLASSIC 5092 disable_l2cap_timeouts = 0; 5093 #endif 5094 } 5095 5096 /** 5097 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5098 */ 5099 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5100 hci_stack->chipset = chipset_driver; 5101 5102 // reset chipset driver - init is also called on power_up 5103 if (hci_stack->chipset && hci_stack->chipset->init){ 5104 hci_stack->chipset->init(hci_stack->config); 5105 } 5106 } 5107 5108 void hci_enable_custom_pre_init(void){ 5109 hci_stack->chipset_pre_init = true; 5110 } 5111 5112 /** 5113 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5114 */ 5115 void hci_set_control(const btstack_control_t *hardware_control){ 5116 // references to used control implementation 5117 hci_stack->control = hardware_control; 5118 // init with transport config 5119 hardware_control->init(hci_stack->config); 5120 } 5121 5122 static void hci_discard_connections(void){ 5123 btstack_linked_list_iterator_t it; 5124 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5125 while (btstack_linked_list_iterator_has_next(&it)){ 5126 // cancel all l2cap connections by emitting disconnection complete before shutdown (free) connection 5127 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5128 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5129 hci_shutdown_connection(connection); 5130 } 5131 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5132 while (hci_stack->iso_streams != NULL){ 5133 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5134 } 5135 #endif 5136 } 5137 5138 void hci_close(void){ 5139 5140 #ifdef ENABLE_CLASSIC 5141 // close remote device db 5142 if (hci_stack->link_key_db) { 5143 hci_stack->link_key_db->close(); 5144 } 5145 #endif 5146 5147 hci_discard_connections(); 5148 5149 hci_power_control(HCI_POWER_OFF); 5150 5151 #ifdef HAVE_MALLOC 5152 free(hci_stack); 5153 #endif 5154 hci_stack = NULL; 5155 } 5156 5157 #ifdef HAVE_SCO_TRANSPORT 5158 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5159 hci_stack->sco_transport = sco_transport; 5160 sco_transport->register_packet_handler(&packet_handler); 5161 } 5162 #endif 5163 5164 #ifdef ENABLE_CLASSIC 5165 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5166 // validate range and set 5167 if (encryption_key_size < 7) return; 5168 if (encryption_key_size > 16) return; 5169 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5170 } 5171 5172 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5173 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5174 hci_stack->gap_security_mode = security_mode; 5175 return ERROR_CODE_SUCCESS; 5176 } else { 5177 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5178 } 5179 } 5180 5181 gap_security_mode_t gap_get_security_mode(void){ 5182 return hci_stack->gap_security_mode; 5183 } 5184 5185 void gap_set_security_level(gap_security_level_t security_level){ 5186 hci_stack->gap_security_level = security_level; 5187 } 5188 5189 gap_security_level_t gap_get_security_level(void){ 5190 if (hci_stack->gap_secure_connections_only_mode){ 5191 return LEVEL_4; 5192 } 5193 return hci_stack->gap_security_level; 5194 } 5195 5196 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5197 hci_stack->gap_minimal_service_security_level = security_level; 5198 } 5199 5200 void gap_set_secure_connections_only_mode(bool enable){ 5201 hci_stack->gap_secure_connections_only_mode = enable; 5202 } 5203 5204 bool gap_get_secure_connections_only_mode(void){ 5205 return hci_stack->gap_secure_connections_only_mode; 5206 } 5207 #endif 5208 5209 #ifdef ENABLE_CLASSIC 5210 void gap_set_class_of_device(uint32_t class_of_device){ 5211 hci_stack->class_of_device = class_of_device; 5212 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5213 hci_run(); 5214 } 5215 5216 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5217 hci_stack->default_link_policy_settings = default_link_policy_settings; 5218 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5219 hci_run(); 5220 } 5221 5222 void gap_set_allow_role_switch(bool allow_role_switch){ 5223 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5224 } 5225 5226 uint8_t hci_get_allow_role_switch(void){ 5227 return hci_stack->allow_role_switch; 5228 } 5229 5230 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5231 hci_stack->link_supervision_timeout = link_supervision_timeout; 5232 } 5233 5234 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5235 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5236 } 5237 5238 uint16_t hci_automatic_flush_timeout(void){ 5239 return hci_stack->automatic_flush_timeout; 5240 } 5241 5242 void hci_disable_l2cap_timeout_check(void){ 5243 disable_l2cap_timeouts = 1; 5244 } 5245 #endif 5246 5247 #ifndef HAVE_HOST_CONTROLLER_API 5248 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5249 void hci_set_bd_addr(bd_addr_t addr){ 5250 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5251 hci_stack->custom_bd_addr_set = 1; 5252 } 5253 #endif 5254 5255 // State-Module-Driver overview 5256 // state module low-level 5257 // HCI_STATE_OFF off close 5258 // HCI_STATE_INITIALIZING, on open 5259 // HCI_STATE_WORKING, on open 5260 // HCI_STATE_HALTING, on open 5261 // HCI_STATE_SLEEPING, off/sleep close 5262 // HCI_STATE_FALLING_ASLEEP on open 5263 5264 static int hci_power_control_on(void){ 5265 5266 // power on 5267 int err = 0; 5268 if (hci_stack->control && hci_stack->control->on){ 5269 err = (*hci_stack->control->on)(); 5270 } 5271 if (err){ 5272 log_error( "POWER_ON failed"); 5273 hci_emit_hci_open_failed(); 5274 return err; 5275 } 5276 5277 // int chipset driver 5278 if (hci_stack->chipset && hci_stack->chipset->init){ 5279 hci_stack->chipset->init(hci_stack->config); 5280 } 5281 5282 // init transport 5283 if (hci_stack->hci_transport->init){ 5284 hci_stack->hci_transport->init(hci_stack->config); 5285 } 5286 5287 // open transport 5288 err = hci_stack->hci_transport->open(); 5289 if (err){ 5290 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5291 if (hci_stack->control && hci_stack->control->off){ 5292 (*hci_stack->control->off)(); 5293 } 5294 hci_emit_hci_open_failed(); 5295 return err; 5296 } 5297 return 0; 5298 } 5299 5300 static void hci_power_control_off(void){ 5301 5302 log_info("hci_power_control_off"); 5303 5304 // close low-level device 5305 hci_stack->hci_transport->close(); 5306 5307 log_info("hci_power_control_off - hci_transport closed"); 5308 5309 // power off 5310 if (hci_stack->control && hci_stack->control->off){ 5311 (*hci_stack->control->off)(); 5312 } 5313 5314 log_info("hci_power_control_off - control closed"); 5315 5316 hci_stack->state = HCI_STATE_OFF; 5317 } 5318 5319 static void hci_power_control_sleep(void){ 5320 5321 log_info("hci_power_control_sleep"); 5322 5323 #if 0 5324 // don't close serial port during sleep 5325 5326 // close low-level device 5327 hci_stack->hci_transport->close(hci_stack->config); 5328 #endif 5329 5330 // sleep mode 5331 if (hci_stack->control && hci_stack->control->sleep){ 5332 (*hci_stack->control->sleep)(); 5333 } 5334 5335 hci_stack->state = HCI_STATE_SLEEPING; 5336 } 5337 5338 static int hci_power_control_wake(void){ 5339 5340 log_info("hci_power_control_wake"); 5341 5342 // wake on 5343 if (hci_stack->control && hci_stack->control->wake){ 5344 (*hci_stack->control->wake)(); 5345 } 5346 5347 #if 0 5348 // open low-level device 5349 int err = hci_stack->hci_transport->open(hci_stack->config); 5350 if (err){ 5351 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5352 if (hci_stack->control && hci_stack->control->off){ 5353 (*hci_stack->control->off)(); 5354 } 5355 hci_emit_hci_open_failed(); 5356 return err; 5357 } 5358 #endif 5359 5360 return 0; 5361 } 5362 5363 static void hci_power_enter_initializing_state(void){ 5364 // set up state machine 5365 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5366 hci_stack->hci_packet_buffer_reserved = false; 5367 hci_stack->state = HCI_STATE_INITIALIZING; 5368 5369 #ifndef HAVE_HOST_CONTROLLER_API 5370 if (hci_stack->chipset_pre_init) { 5371 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5372 } else 5373 #endif 5374 { 5375 hci_stack->substate = HCI_INIT_SEND_RESET; 5376 } 5377 } 5378 5379 static void hci_power_enter_halting_state(void){ 5380 #ifdef ENABLE_BLE 5381 // drop entries scheduled for removal, mark others for re-adding 5382 btstack_linked_list_iterator_t it; 5383 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5384 while (btstack_linked_list_iterator_has_next(&it)){ 5385 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5386 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5387 btstack_linked_list_iterator_remove(&it); 5388 btstack_memory_whitelist_entry_free(entry); 5389 } else { 5390 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5391 } 5392 } 5393 #ifdef ENABLE_LE_CENTRAL 5394 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5395 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5396 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5397 while (btstack_linked_list_iterator_has_next(&it)){ 5398 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5399 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5400 btstack_linked_list_iterator_remove(&it); 5401 btstack_memory_periodic_advertiser_list_entry_free(entry); 5402 } else { 5403 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5404 continue; 5405 } 5406 } 5407 #endif 5408 #endif 5409 #endif 5410 // see hci_run 5411 hci_stack->state = HCI_STATE_HALTING; 5412 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5413 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5414 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5415 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5416 btstack_run_loop_add_timer(&hci_stack->timeout); 5417 } 5418 5419 // returns error 5420 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5421 int err; 5422 switch (power_mode){ 5423 case HCI_POWER_ON: 5424 err = hci_power_control_on(); 5425 if (err != 0) { 5426 log_error("hci_power_control_on() error %d", err); 5427 return err; 5428 } 5429 hci_power_enter_initializing_state(); 5430 break; 5431 case HCI_POWER_OFF: 5432 // do nothing 5433 break; 5434 case HCI_POWER_SLEEP: 5435 // do nothing (with SLEEP == OFF) 5436 break; 5437 default: 5438 btstack_assert(false); 5439 break; 5440 } 5441 return ERROR_CODE_SUCCESS; 5442 } 5443 5444 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5445 switch (power_mode){ 5446 case HCI_POWER_ON: 5447 // do nothing 5448 break; 5449 case HCI_POWER_OFF: 5450 // no connections yet, just turn it off 5451 hci_power_control_off(); 5452 break; 5453 case HCI_POWER_SLEEP: 5454 // no connections yet, just turn it off 5455 hci_power_control_sleep(); 5456 break; 5457 default: 5458 btstack_assert(false); 5459 break; 5460 } 5461 return ERROR_CODE_SUCCESS; 5462 } 5463 5464 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5465 switch (power_mode){ 5466 case HCI_POWER_ON: 5467 // do nothing 5468 break; 5469 case HCI_POWER_OFF: 5470 hci_power_enter_halting_state(); 5471 break; 5472 case HCI_POWER_SLEEP: 5473 // see hci_run 5474 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5475 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5476 break; 5477 default: 5478 btstack_assert(false); 5479 break; 5480 } 5481 return ERROR_CODE_SUCCESS; 5482 } 5483 5484 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5485 switch (power_mode){ 5486 case HCI_POWER_ON: 5487 hci_power_enter_initializing_state(); 5488 break; 5489 case HCI_POWER_OFF: 5490 // do nothing 5491 break; 5492 case HCI_POWER_SLEEP: 5493 // see hci_run 5494 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5495 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5496 break; 5497 default: 5498 btstack_assert(false); 5499 break; 5500 } 5501 return ERROR_CODE_SUCCESS; 5502 } 5503 5504 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5505 switch (power_mode){ 5506 case HCI_POWER_ON: 5507 hci_power_enter_initializing_state(); 5508 break; 5509 case HCI_POWER_OFF: 5510 hci_power_enter_halting_state(); 5511 break; 5512 case HCI_POWER_SLEEP: 5513 // do nothing 5514 break; 5515 default: 5516 btstack_assert(false); 5517 break; 5518 } 5519 return ERROR_CODE_SUCCESS; 5520 } 5521 5522 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5523 int err; 5524 switch (power_mode){ 5525 case HCI_POWER_ON: 5526 err = hci_power_control_wake(); 5527 if (err) return err; 5528 hci_power_enter_initializing_state(); 5529 break; 5530 case HCI_POWER_OFF: 5531 hci_power_enter_halting_state(); 5532 break; 5533 case HCI_POWER_SLEEP: 5534 // do nothing 5535 break; 5536 default: 5537 btstack_assert(false); 5538 break; 5539 } 5540 return ERROR_CODE_SUCCESS; 5541 } 5542 5543 int hci_power_control(HCI_POWER_MODE power_mode){ 5544 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5545 btstack_run_loop_remove_timer(&hci_stack->timeout); 5546 int err = 0; 5547 switch (hci_stack->state){ 5548 case HCI_STATE_OFF: 5549 err = hci_power_control_state_off(power_mode); 5550 break; 5551 case HCI_STATE_INITIALIZING: 5552 err = hci_power_control_state_initializing(power_mode); 5553 break; 5554 case HCI_STATE_WORKING: 5555 err = hci_power_control_state_working(power_mode); 5556 break; 5557 case HCI_STATE_HALTING: 5558 err = hci_power_control_state_halting(power_mode); 5559 break; 5560 case HCI_STATE_FALLING_ASLEEP: 5561 err = hci_power_control_state_falling_asleep(power_mode); 5562 break; 5563 case HCI_STATE_SLEEPING: 5564 err = hci_power_control_state_sleeping(power_mode); 5565 break; 5566 default: 5567 btstack_assert(false); 5568 break; 5569 } 5570 if (err != 0){ 5571 return err; 5572 } 5573 5574 // create internal event 5575 hci_emit_state(); 5576 5577 // trigger next/first action 5578 hci_run(); 5579 5580 return 0; 5581 } 5582 5583 5584 static void hci_halting_run(void) { 5585 5586 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5587 5588 hci_connection_t *connection; 5589 #ifdef ENABLE_BLE 5590 #ifdef ENABLE_LE_PERIPHERAL 5591 bool stop_advertisements; 5592 #endif 5593 #endif 5594 5595 switch (hci_stack->substate) { 5596 case HCI_HALTING_CLASSIC_STOP: 5597 #ifdef ENABLE_CLASSIC 5598 if (!hci_can_send_command_packet_now()) return; 5599 5600 if (hci_stack->connectable || hci_stack->discoverable){ 5601 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5602 hci_send_cmd(&hci_write_scan_enable, 0); 5603 return; 5604 } 5605 #endif 5606 /* fall through */ 5607 5608 case HCI_HALTING_LE_ADV_STOP: 5609 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5610 5611 #ifdef ENABLE_BLE 5612 #ifdef ENABLE_LE_PERIPHERAL 5613 if (!hci_can_send_command_packet_now()) return; 5614 5615 stop_advertisements = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5616 5617 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5618 if (hci_le_extended_advertising_supported()){ 5619 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5620 btstack_linked_list_iterator_t it; 5621 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5622 // stop all periodic advertisements and check if an extended set is active 5623 while (btstack_linked_list_iterator_has_next(&it)){ 5624 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5625 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5626 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5627 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5628 return; 5629 } 5630 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5631 stop_advertisements = true; 5632 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5633 } 5634 } 5635 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5636 if (stop_advertisements){ 5637 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5638 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5639 return; 5640 } 5641 } else 5642 #else /* ENABLE_LE_PERIPHERAL */ 5643 { 5644 if (stop_advertisements) { 5645 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5646 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5647 return; 5648 } 5649 } 5650 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5651 #endif /* ENABLE_LE_PERIPHERAL */ 5652 #endif /* ENABLE_BLE */ 5653 5654 /* fall through */ 5655 5656 case HCI_HALTING_LE_SCAN_STOP: 5657 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5658 if (!hci_can_send_command_packet_now()) return; 5659 5660 #ifdef ENABLE_BLE 5661 #ifdef ENABLE_LE_CENTRAL 5662 if (hci_stack->le_scanning_active){ 5663 hci_le_scan_stop(); 5664 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5665 return; 5666 } 5667 #endif 5668 #endif 5669 5670 /* fall through */ 5671 5672 case HCI_HALTING_DISCONNECT_ALL: 5673 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5674 if (!hci_can_send_command_packet_now()) return; 5675 5676 // close all open connections 5677 connection = (hci_connection_t *) hci_stack->connections; 5678 if (connection) { 5679 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5680 5681 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", (void*)connection, con_handle, connection->state); 5682 5683 // check state 5684 switch(connection->state) { 5685 case SENT_DISCONNECT: 5686 case RECEIVED_DISCONNECTION_COMPLETE: 5687 // wait until connection is gone 5688 return; 5689 default: 5690 break; 5691 } 5692 5693 // finally, send the disconnect command 5694 connection->state = SENT_DISCONNECT; 5695 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5696 return; 5697 } 5698 5699 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5700 // stop BIGs and BIG Syncs 5701 if (hci_stack->le_audio_bigs != NULL){ 5702 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5703 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5704 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5705 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5706 return; 5707 } 5708 if (hci_stack->le_audio_big_syncs != NULL){ 5709 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5710 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5711 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5712 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5713 return; 5714 } 5715 #endif 5716 5717 btstack_run_loop_remove_timer(&hci_stack->timeout); 5718 5719 // no connections left, wait a bit to assert that btstack_crypto isn't waiting for an HCI event 5720 log_info("HCI_STATE_HALTING: wait 50 ms"); 5721 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5722 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5723 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5724 btstack_run_loop_add_timer(&hci_stack->timeout); 5725 break; 5726 5727 case HCI_HALTING_W4_CLOSE_TIMER: 5728 // keep waiting 5729 break; 5730 5731 case HCI_HALTING_CLOSE: 5732 // close left over connections (that had not been properly closed before) 5733 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5734 hci_discard_connections(); 5735 5736 log_info("HCI_STATE_HALTING, calling off"); 5737 5738 // switch mode 5739 hci_power_control_off(); 5740 5741 log_info("HCI_STATE_HALTING, emitting state"); 5742 hci_emit_state(); 5743 log_info("HCI_STATE_HALTING, done"); 5744 break; 5745 5746 default: 5747 break; 5748 } 5749 } 5750 5751 static void hci_falling_asleep_run(void){ 5752 hci_connection_t * connection; 5753 switch(hci_stack->substate) { 5754 case HCI_FALLING_ASLEEP_DISCONNECT: 5755 log_info("HCI_STATE_FALLING_ASLEEP"); 5756 // close all open connections 5757 connection = (hci_connection_t *) hci_stack->connections; 5758 if (connection){ 5759 5760 // send disconnect 5761 if (!hci_can_send_command_packet_now()) return; 5762 5763 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", (void*)connection, (uint16_t)connection->con_handle); 5764 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5765 5766 // send disconnected event right away - causes higher layer connections to get closed, too. 5767 hci_shutdown_connection(connection); 5768 return; 5769 } 5770 5771 if (hci_classic_supported()){ 5772 // disable page and inquiry scan 5773 if (!hci_can_send_command_packet_now()) return; 5774 5775 log_info("HCI_STATE_HALTING, disabling inq scans"); 5776 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5777 5778 // continue in next substate 5779 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5780 break; 5781 } 5782 5783 /* fall through */ 5784 5785 case HCI_FALLING_ASLEEP_COMPLETE: 5786 log_info("HCI_STATE_HALTING, calling sleep"); 5787 // switch mode 5788 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5789 hci_emit_state(); 5790 break; 5791 5792 default: 5793 break; 5794 } 5795 } 5796 5797 #ifdef ENABLE_CLASSIC 5798 5799 static void hci_update_scan_enable(void){ 5800 // 2 = page scan, 1 = inq scan 5801 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5802 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5803 hci_run(); 5804 } 5805 5806 void gap_discoverable_control(uint8_t enable){ 5807 if (enable) enable = 1; // normalize argument 5808 5809 if (hci_stack->discoverable == enable){ 5810 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5811 return; 5812 } 5813 5814 hci_stack->discoverable = enable; 5815 hci_update_scan_enable(); 5816 } 5817 5818 void gap_connectable_control(uint8_t enable){ 5819 if (enable) enable = 1; // normalize argument 5820 5821 // don't emit event 5822 if (hci_stack->connectable == enable) return; 5823 5824 hci_stack->connectable = enable; 5825 hci_update_scan_enable(); 5826 } 5827 #endif 5828 5829 void gap_local_bd_addr(bd_addr_t address_buffer){ 5830 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5831 } 5832 5833 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5834 static void hci_host_num_completed_packets(void){ 5835 5836 // create packet manually as arrays are not supported and num_commands should not get reduced 5837 hci_reserve_packet_buffer(); 5838 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5839 5840 uint16_t size = 0; 5841 uint16_t num_handles = 0; 5842 packet[size++] = 0x35; 5843 packet[size++] = 0x0c; 5844 size++; // skip param len 5845 size++; // skip num handles 5846 5847 // add { handle, packets } entries 5848 btstack_linked_item_t * it; 5849 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5850 hci_connection_t * connection = (hci_connection_t *) it; 5851 if (connection->num_packets_completed){ 5852 little_endian_store_16(packet, size, connection->con_handle); 5853 size += 2; 5854 little_endian_store_16(packet, size, connection->num_packets_completed); 5855 size += 2; 5856 // 5857 num_handles++; 5858 connection->num_packets_completed = 0; 5859 } 5860 } 5861 5862 packet[2] = size - 3; 5863 packet[3] = num_handles; 5864 5865 hci_stack->host_completed_packets = 0; 5866 5867 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5868 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5869 5870 // release packet buffer for synchronous transport implementations 5871 if (hci_transport_synchronous()){ 5872 hci_release_packet_buffer(); 5873 hci_emit_transport_packet_sent(); 5874 } 5875 } 5876 #endif 5877 5878 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5879 UNUSED(ds); 5880 hci_stack->substate = HCI_HALTING_CLOSE; 5881 hci_halting_run(); 5882 } 5883 5884 static bool hci_run_acl_fragments(void){ 5885 if (hci_stack->acl_fragmentation_total_size > 0u) { 5886 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5887 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5888 if (connection) { 5889 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5890 hci_send_acl_packet_fragments(connection); 5891 return true; 5892 } 5893 } else { 5894 // connection gone -> discard further fragments 5895 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5896 hci_stack->acl_fragmentation_total_size = 0; 5897 hci_stack->acl_fragmentation_pos = 0; 5898 } 5899 } 5900 return false; 5901 } 5902 5903 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5904 static bool hci_run_iso_fragments(void){ 5905 if (hci_stack->iso_fragmentation_total_size > 0u) { 5906 // TODO: flow control 5907 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5908 hci_send_iso_packet_fragments(); 5909 return true; 5910 } 5911 } 5912 return false; 5913 } 5914 #endif 5915 5916 #ifdef ENABLE_CLASSIC 5917 5918 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5919 static bool hci_classic_operation_active(void) { 5920 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5921 return true; 5922 } 5923 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5924 return true; 5925 } 5926 btstack_linked_item_t * it; 5927 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5928 hci_connection_t *connection = (hci_connection_t *) it; 5929 switch (connection->state) { 5930 case SENT_CREATE_CONNECTION: 5931 case SENT_CANCEL_CONNECTION: 5932 case SENT_DISCONNECT: 5933 return true; 5934 default: 5935 break; 5936 } 5937 } 5938 return false; 5939 } 5940 #endif 5941 5942 static bool hci_run_general_gap_classic(void){ 5943 5944 // assert stack is working and classic is active 5945 if (hci_classic_supported() == false) return false; 5946 if (hci_stack->state != HCI_STATE_WORKING) return false; 5947 5948 // decline incoming connections 5949 if (hci_stack->decline_reason){ 5950 uint8_t reason = hci_stack->decline_reason; 5951 hci_stack->decline_reason = 0; 5952 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5953 return true; 5954 } 5955 5956 if (hci_stack->gap_tasks_classic != 0){ 5957 hci_run_gap_tasks_classic(); 5958 return true; 5959 } 5960 5961 // start/stop inquiry 5962 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5963 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5964 if (hci_classic_operation_active() == false) 5965 #endif 5966 { 5967 uint8_t duration = hci_stack->inquiry_state; 5968 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5969 if (hci_stack->inquiry_max_period_length != 0){ 5970 hci_send_cmd(&hci_periodic_inquiry_mode, hci_stack->inquiry_max_period_length, hci_stack->inquiry_min_period_length, hci_stack->inquiry_lap, duration, 0); 5971 } else { 5972 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5973 } 5974 return true; 5975 } 5976 } 5977 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5978 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5979 hci_send_cmd(&hci_inquiry_cancel); 5980 return true; 5981 } 5982 5983 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5984 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5985 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5986 return true; 5987 } 5988 5989 // remote name request 5990 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5991 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5992 if (hci_classic_operation_active() == false) 5993 #endif 5994 { 5995 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5996 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5997 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5998 return true; 5999 } 6000 } 6001 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6002 // Local OOB data 6003 if (hci_stack->classic_read_local_oob_data){ 6004 hci_stack->classic_read_local_oob_data = false; 6005 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 6006 hci_send_cmd(&hci_read_local_extended_oob_data); 6007 } else { 6008 hci_send_cmd(&hci_read_local_oob_data); 6009 } 6010 } 6011 #endif 6012 // pairing 6013 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 6014 uint8_t state = hci_stack->gap_pairing_state; 6015 uint8_t pin_code[PIN_CODE_LEN]; 6016 switch (state){ 6017 case GAP_PAIRING_STATE_SEND_PIN: 6018 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6019 memset(pin_code, 0, 16); 6020 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 6021 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 6022 break; 6023 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 6024 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6025 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 6026 break; 6027 case GAP_PAIRING_STATE_SEND_PASSKEY: 6028 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6029 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 6030 break; 6031 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 6032 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6033 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 6034 break; 6035 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 6036 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 6037 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 6038 break; 6039 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 6040 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 6041 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 6042 break; 6043 default: 6044 break; 6045 } 6046 return true; 6047 } 6048 return false; 6049 } 6050 #endif 6051 6052 #ifdef ENABLE_BLE 6053 #ifdef ENABLE_LE_CENTRAL 6054 6055 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6056 static uint8_t hci_le_num_phys(uint8_t phys){ 6057 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 6058 btstack_assert(phys); 6059 return num_bits_set[phys]; 6060 } 6061 #endif 6062 6063 static void hci_le_scan_stop(void){ 6064 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6065 if (hci_le_extended_advertising_supported()) { 6066 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 6067 } else 6068 #endif 6069 { 6070 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 6071 } 6072 } 6073 6074 static void 6075 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 6076 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6077 if (hci_le_extended_advertising_supported()) { 6078 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 6079 uint16_t le_connection_scan_interval[3]; 6080 uint16_t le_connection_scan_window[3]; 6081 uint16_t le_connection_interval_min[3]; 6082 uint16_t le_connection_interval_max[3]; 6083 uint16_t le_connection_latency[3]; 6084 uint16_t le_supervision_timeout[3]; 6085 uint16_t le_minimum_ce_length[3]; 6086 uint16_t le_maximum_ce_length[3]; 6087 6088 uint8_t i; 6089 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 6090 for (i=0;i<num_phys;i++){ 6091 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 6092 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6093 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6094 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6095 le_connection_latency[i] = hci_stack->le_connection_latency; 6096 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6097 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6098 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6099 } 6100 hci_send_cmd(&hci_le_extended_create_connection, 6101 initiator_filter_policy, 6102 hci_stack->le_connection_own_addr_type, // our addr type: 6103 address_type, // peer address type 6104 address, // peer bd addr 6105 hci_stack->le_connection_phys, // initiating PHY 6106 le_connection_scan_interval, // conn scan interval 6107 le_connection_scan_window, // conn scan windows 6108 le_connection_interval_min, // conn interval min 6109 le_connection_interval_max, // conn interval max 6110 le_connection_latency, // conn latency 6111 le_supervision_timeout, // conn latency 6112 le_minimum_ce_length, // min ce length 6113 le_maximum_ce_length // max ce length 6114 ); 6115 } else 6116 #endif 6117 { 6118 hci_send_cmd(&hci_le_create_connection, 6119 hci_stack->le_connection_scan_interval, // conn scan interval 6120 hci_stack->le_connection_scan_window, // conn scan windows 6121 initiator_filter_policy, // don't use whitelist 6122 address_type, // peer address type 6123 address, // peer bd addr 6124 hci_stack->le_connection_own_addr_type, // our addr type: 6125 hci_stack->le_connection_interval_min, // conn interval min 6126 hci_stack->le_connection_interval_max, // conn interval max 6127 hci_stack->le_connection_latency, // conn latency 6128 hci_stack->le_supervision_timeout, // conn latency 6129 hci_stack->le_minimum_ce_length, // min ce length 6130 hci_stack->le_maximum_ce_length // max ce length 6131 ); 6132 } 6133 } 6134 #endif 6135 6136 #ifdef ENABLE_LE_PERIPHERAL 6137 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6138 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6139 uint8_t operation = 0; 6140 if (pos == 0){ 6141 // first fragment or complete data 6142 operation |= 1; 6143 } 6144 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6145 // last fragment or complete data 6146 operation |= 2; 6147 } 6148 return operation; 6149 } 6150 #endif 6151 #endif 6152 6153 static bool hci_whitelist_modification_pending(void) { 6154 btstack_linked_list_iterator_t it; 6155 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6156 while (btstack_linked_list_iterator_has_next(&it)){ 6157 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6158 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6159 return true; 6160 } 6161 } 6162 return false; 6163 } 6164 6165 static bool hci_whitelist_modification_process(void){ 6166 // add/remove entries 6167 btstack_linked_list_iterator_t it; 6168 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6169 while (btstack_linked_list_iterator_has_next(&it)){ 6170 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6171 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6172 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6173 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6174 bd_addr_type_t address_type = entry->address_type; 6175 bd_addr_t address; 6176 memcpy(address, entry->address, 6); 6177 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6178 // remove from whitelist if not scheduled for re-addition 6179 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6180 btstack_memory_whitelist_entry_free(entry); 6181 } 6182 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6183 return true; 6184 } 6185 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6186 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6187 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6188 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6189 return true; 6190 } 6191 } 6192 return false; 6193 } 6194 6195 static bool hci_run_general_gap_le(void){ 6196 6197 #if defined(ENABLE_LE_EXTENDED_ADVERTISING) || defined(ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE) 6198 btstack_linked_list_iterator_t lit; 6199 #endif 6200 6201 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6202 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6203 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6204 hci_stack->le_resolvable_private_address_update_s = 0; 6205 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6206 return true; 6207 } 6208 #endif 6209 6210 // Phase 1: collect what to stop 6211 6212 #ifdef ENABLE_LE_CENTRAL 6213 bool scanning_stop = false; 6214 bool connecting_stop = false; 6215 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6216 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6217 bool periodic_sync_stop = false; 6218 #endif 6219 #endif 6220 #endif 6221 6222 #ifdef ENABLE_LE_PERIPHERAL 6223 bool advertising_stop = false; 6224 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6225 le_advertising_set_t * advertising_stop_set = NULL; 6226 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6227 bool periodic_advertising_stop = false; 6228 #endif 6229 #endif 6230 #endif 6231 6232 // check if own address changes 6233 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6234 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6235 6236 // check if whitelist needs modification 6237 bool whitelist_modification_pending = hci_whitelist_modification_pending(); 6238 6239 // check if resolving list needs modification 6240 bool resolving_list_modification_pending = false; 6241 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6242 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6243 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6244 resolving_list_modification_pending = true; 6245 } 6246 #endif 6247 6248 #ifdef ENABLE_LE_CENTRAL 6249 6250 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6251 // check if periodic advertiser list needs modification 6252 bool periodic_list_modification_pending = false; 6253 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6254 while (btstack_linked_list_iterator_has_next(&lit)){ 6255 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6256 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6257 periodic_list_modification_pending = true; 6258 break; 6259 } 6260 } 6261 #endif 6262 6263 // scanning control 6264 if (hci_stack->le_scanning_active) { 6265 // stop if: 6266 // - parameter change required 6267 // - it's disabled 6268 // - whitelist change required but used for scanning 6269 // - resolving list modified 6270 // - own address changes 6271 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6272 if ((hci_stack->le_scanning_param_update) || 6273 !hci_stack->le_scanning_enabled || 6274 (scanning_uses_whitelist && whitelist_modification_pending) || 6275 resolving_list_modification_pending || 6276 random_address_change){ 6277 6278 scanning_stop = true; 6279 } 6280 } 6281 6282 // connecting control 6283 bool connecting_with_whitelist; 6284 switch (hci_stack->le_connecting_state){ 6285 case LE_CONNECTING_DIRECT: 6286 case LE_CONNECTING_WHITELIST: 6287 // stop connecting if: 6288 // - connecting uses white and whitelist modification pending 6289 // - if it got disabled 6290 // - resolving list modified 6291 // - own address changes 6292 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6293 if ((connecting_with_whitelist && whitelist_modification_pending) || 6294 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6295 resolving_list_modification_pending || 6296 random_address_change) { 6297 6298 connecting_stop = true; 6299 } 6300 break; 6301 default: 6302 break; 6303 } 6304 6305 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6306 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6307 // periodic sync control 6308 bool sync_with_advertiser_list; 6309 switch(hci_stack->le_periodic_sync_state){ 6310 case LE_CONNECTING_DIRECT: 6311 case LE_CONNECTING_WHITELIST: 6312 // stop sync if: 6313 // - sync with advertiser list and advertiser list modification pending 6314 // - if it got disabled 6315 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6316 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6317 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6318 periodic_sync_stop = true; 6319 } 6320 break; 6321 default: 6322 break; 6323 } 6324 #endif 6325 #endif 6326 6327 #endif /* ENABLE_LE_CENTRAL */ 6328 6329 #ifdef ENABLE_LE_PERIPHERAL 6330 // le advertisement control 6331 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6332 // stop if: 6333 // - parameter change required 6334 // - random address used in advertising and changes 6335 // - it's disabled 6336 // - whitelist change required but used for advertisement filter policy 6337 // - resolving list modified 6338 // - own address changes 6339 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6340 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6341 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6342 if (advertising_change || 6343 (advertising_uses_random_address && random_address_change) || 6344 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6345 (advertising_uses_whitelist && whitelist_modification_pending) || 6346 resolving_list_modification_pending || 6347 random_address_change) { 6348 6349 advertising_stop = true; 6350 } 6351 } 6352 6353 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6354 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6355 btstack_linked_list_iterator_t it; 6356 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6357 while (btstack_linked_list_iterator_has_next(&it)){ 6358 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6359 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6360 // stop if: 6361 // - parameter change required 6362 // - random address used in connectable advertising and changes 6363 // - it's disabled 6364 // - whitelist change required but used for advertisement filter policy 6365 // - resolving list modified 6366 // - own address changes 6367 // - advertisement set will be removed 6368 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6369 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6370 bool advertising_uses_random_address = 6371 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6372 advertising_connectable; 6373 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6374 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6375 bool advertising_set_random_address_change = 6376 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6377 bool advertising_set_will_be_removed = 6378 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6379 if (advertising_parameter_change || 6380 (advertising_uses_random_address && advertising_set_random_address_change) || 6381 (advertising_enabled == false) || 6382 (advertising_uses_whitelist && whitelist_modification_pending) || 6383 resolving_list_modification_pending || 6384 advertising_set_will_be_removed) { 6385 6386 advertising_stop = true; 6387 advertising_stop_set = advertising_set; 6388 break; 6389 } 6390 } 6391 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6392 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6393 // stop if: 6394 // - it's disabled 6395 // - parameter change required 6396 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6397 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6398 if ((periodic_enabled == false) || periodic_parameter_change){ 6399 periodic_advertising_stop = true; 6400 advertising_stop_set = advertising_set; 6401 } 6402 } 6403 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6404 } 6405 } 6406 #endif 6407 6408 #endif 6409 6410 6411 // Phase 2: stop everything that should be off during modifications 6412 6413 6414 // 2.1 Outgoing connection 6415 #ifdef ENABLE_LE_CENTRAL 6416 if (connecting_stop){ 6417 hci_send_cmd(&hci_le_create_connection_cancel); 6418 return true; 6419 } 6420 #endif 6421 6422 // 2.2 Scanning 6423 #ifdef ENABLE_LE_CENTRAL 6424 if (scanning_stop){ 6425 hci_stack->le_scanning_active = false; 6426 hci_le_scan_stop(); 6427 return true; 6428 } 6429 6430 // 2.3 Periodic Sync 6431 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6432 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6433 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6434 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6435 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6436 return true; 6437 } 6438 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6439 if (periodic_sync_stop){ 6440 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6441 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6442 return true; 6443 } 6444 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6445 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6446 #endif /* ENABLE_LE_CENTRAL */ 6447 6448 // 2.4 Advertising: legacy, extended, periodic 6449 #ifdef ENABLE_LE_PERIPHERAL 6450 if (advertising_stop){ 6451 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6452 if (hci_le_extended_advertising_supported()) { 6453 uint8_t advertising_stop_handle; 6454 if (advertising_stop_set != NULL){ 6455 advertising_stop_handle = advertising_stop_set->advertising_handle; 6456 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6457 } else { 6458 advertising_stop_handle = 0; 6459 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6460 } 6461 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6462 const uint16_t durations[] = { 0 }; 6463 const uint16_t max_events[] = { 0 }; 6464 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6465 } else 6466 #endif 6467 { 6468 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6469 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6470 } 6471 return true; 6472 } 6473 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6474 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6475 if (periodic_advertising_stop){ 6476 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6477 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6478 return true; 6479 } 6480 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6481 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6482 #endif /* ENABLE_LE_PERIPHERAL */ 6483 6484 6485 // Phase 3: modify 6486 6487 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6488 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6489 // GAP Privacy, notify clients upon upcoming random address change 6490 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6491 // notify might cause hci_run to get executed, check if we still can send 6492 gap_privacy_clients_notify(hci_stack->le_random_address); 6493 if (!hci_can_send_command_packet_now()) { 6494 return true; 6495 } 6496 } 6497 6498 // - wait until privacy update completed 6499 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6500 return false; 6501 } 6502 6503 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6504 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6505 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6506 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6507 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6508 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6509 #endif 6510 return true; 6511 } 6512 6513 #ifdef ENABLE_LE_CENTRAL 6514 if (hci_stack->le_scanning_param_update){ 6515 hci_stack->le_scanning_param_update = false; 6516 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6517 if (hci_le_extended_advertising_supported()){ 6518 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6519 uint8_t scan_types[2]; 6520 uint16_t scan_intervals[2]; 6521 uint16_t scan_windows[2]; 6522 6523 uint8_t i; 6524 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6525 for (i=0;i<num_phys;i++){ 6526 scan_types[i] = hci_stack->le_scan_type; 6527 scan_intervals[i] = hci_stack->le_scan_interval; 6528 scan_windows[i] = hci_stack->le_scan_window; 6529 } 6530 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6531 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6532 } else 6533 #endif 6534 { 6535 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6536 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6537 } 6538 return true; 6539 } 6540 #endif 6541 6542 #ifdef ENABLE_LE_PERIPHERAL 6543 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6544 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6545 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6546 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6547 if (hci_le_extended_advertising_supported()){ 6548 // map advertisment type to advertising event properties 6549 uint16_t adv_event_properties = 0; 6550 // 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000 6551 const uint16_t mapping[] = { 0x13, 0x15, 0x1D, 0x12, 0x10 }; 6552 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6553 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6554 } 6555 hci_stack->le_advertising_set_in_current_command = 0; 6556 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6557 0, 6558 adv_event_properties, 6559 hci_stack->le_advertisements_interval_min, 6560 hci_stack->le_advertisements_interval_max, 6561 hci_stack->le_advertisements_channel_map, 6562 hci_stack->le_advertisements_own_addr_type, 6563 hci_stack->le_advertisements_direct_address_type, 6564 hci_stack->le_advertisements_direct_address, 6565 hci_stack->le_advertisements_filter_policy, 6566 0x7f, // tx power: no preference 6567 0x01, // primary adv phy: LE 1M 6568 0, // secondary adv max skip 6569 0x01, // secondary adv phy 6570 0, // adv sid 6571 0 // scan request notification 6572 ); 6573 } else 6574 #endif 6575 { 6576 hci_send_cmd(&hci_le_set_advertising_parameters, 6577 hci_stack->le_advertisements_interval_min, 6578 hci_stack->le_advertisements_interval_max, 6579 hci_stack->le_advertisements_type, 6580 hci_stack->le_advertisements_own_addr_type, 6581 hci_stack->le_advertisements_direct_address_type, 6582 hci_stack->le_advertisements_direct_address, 6583 hci_stack->le_advertisements_channel_map, 6584 hci_stack->le_advertisements_filter_policy); 6585 } 6586 return true; 6587 } 6588 6589 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6590 // assumption: only set if extended advertising is supported 6591 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6592 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6593 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6594 return true; 6595 } 6596 #endif 6597 6598 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6599 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6600 uint8_t adv_data_clean[31]; 6601 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6602 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6603 hci_stack->le_advertisements_data_len); 6604 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6605 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6606 if (hci_le_extended_advertising_supported()){ 6607 hci_stack->le_advertising_set_in_current_command = 0; 6608 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6609 } else 6610 #endif 6611 { 6612 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6613 } 6614 return true; 6615 } 6616 6617 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6618 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6619 uint8_t scan_data_clean[31]; 6620 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6621 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6622 hci_stack->le_scan_response_data_len); 6623 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6624 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6625 if (hci_le_extended_advertising_supported()){ 6626 hci_stack->le_advertising_set_in_current_command = 0; 6627 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6628 } else 6629 #endif 6630 { 6631 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6632 } 6633 return true; 6634 } 6635 6636 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6637 if (hci_le_extended_advertising_supported()) { 6638 btstack_linked_list_iterator_t it; 6639 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6640 while (btstack_linked_list_iterator_has_next(&it)){ 6641 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6642 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6643 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6644 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6645 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6646 return true; 6647 } 6648 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6649 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6650 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6651 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6652 advertising_set->advertising_handle, 6653 advertising_set->extended_params.advertising_event_properties, 6654 advertising_set->extended_params.primary_advertising_interval_min, 6655 advertising_set->extended_params.primary_advertising_interval_max, 6656 advertising_set->extended_params.primary_advertising_channel_map, 6657 advertising_set->extended_params.own_address_type, 6658 advertising_set->extended_params.peer_address_type, 6659 advertising_set->extended_params.peer_address, 6660 advertising_set->extended_params.advertising_filter_policy, 6661 advertising_set->extended_params.advertising_tx_power, 6662 advertising_set->extended_params.primary_advertising_phy, 6663 advertising_set->extended_params.secondary_advertising_max_skip, 6664 advertising_set->extended_params.secondary_advertising_phy, 6665 advertising_set->extended_params.advertising_sid, 6666 advertising_set->extended_params.scan_request_notification_enable 6667 ); 6668 return true; 6669 } 6670 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6671 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6672 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6673 return true; 6674 } 6675 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6676 uint16_t pos = advertising_set->adv_data_pos; 6677 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6678 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6679 if ((operation & 0x02) != 0){ 6680 // last fragment or complete data 6681 operation |= 2; 6682 advertising_set->adv_data_pos = 0; 6683 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6684 } else { 6685 advertising_set->adv_data_pos += data_to_upload; 6686 } 6687 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6688 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6689 return true; 6690 } 6691 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6692 uint16_t pos = advertising_set->scan_data_pos; 6693 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6694 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6695 if ((operation & 0x02) != 0){ 6696 advertising_set->scan_data_pos = 0; 6697 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6698 } else { 6699 advertising_set->scan_data_pos += data_to_upload; 6700 } 6701 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6702 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6703 return true; 6704 } 6705 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6706 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6707 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6708 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6709 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6710 advertising_set->advertising_handle, 6711 advertising_set->periodic_params.periodic_advertising_interval_min, 6712 advertising_set->periodic_params.periodic_advertising_interval_max, 6713 advertising_set->periodic_params.periodic_advertising_properties); 6714 return true; 6715 } 6716 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6717 uint16_t pos = advertising_set->periodic_data_pos; 6718 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6719 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6720 if ((operation & 0x02) != 0){ 6721 // last fragment or complete data 6722 operation |= 2; 6723 advertising_set->periodic_data_pos = 0; 6724 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6725 } else { 6726 advertising_set->periodic_data_pos += data_to_upload; 6727 } 6728 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6729 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6730 return true; 6731 } 6732 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6733 } 6734 } 6735 #endif 6736 6737 #endif 6738 6739 #ifdef ENABLE_LE_CENTRAL 6740 // if connect with whitelist was active and is not cancelled yet, wait until next time 6741 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6742 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6743 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6744 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6745 #endif 6746 #endif 6747 6748 // LE Whitelist Management 6749 if (whitelist_modification_pending){ 6750 bool done = hci_whitelist_modification_process(); 6751 if (done) return true; 6752 } 6753 6754 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6755 // LE Resolving List Management 6756 if (resolving_list_modification_pending) { 6757 uint16_t i; 6758 uint8_t null_16[16]; 6759 uint8_t local_irk_flipped[16]; 6760 const uint8_t *local_irk; 6761 switch (hci_stack->le_resolving_list_state) { 6762 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6763 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6764 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6765 return true; 6766 case LE_RESOLVING_LIST_READ_SIZE: 6767 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6768 hci_send_cmd(&hci_le_read_resolving_list_size); 6769 return true; 6770 case LE_RESOLVING_LIST_SEND_CLEAR: 6771 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6772 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6773 sizeof(hci_stack->le_resolving_list_add_entries)); 6774 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6775 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6776 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6777 sizeof(hci_stack->le_resolving_list_remove_entries)); 6778 hci_send_cmd(&hci_le_clear_resolving_list); 6779 return true; 6780 case LE_RESOLVING_LIST_SET_IRK: 6781 // set IRK used by RPA for undirected advertising 6782 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6783 local_irk = gap_get_persistent_irk(); 6784 reverse_128(local_irk, local_irk_flipped); 6785 memset(null_16, 0, sizeof(null_16)); 6786 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6787 null_16, local_irk_flipped); 6788 return true; 6789 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6790 // first remove old entries 6791 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6792 uint8_t offset = i >> 3; 6793 uint8_t mask = 1 << (i & 7); 6794 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6795 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6796 bd_addr_t peer_identity_addreses; 6797 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6798 sm_key_t peer_irk; 6799 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6800 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6801 6802 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6803 // trigger whitelist entry 'update' (work around for controller bug) 6804 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6805 while (btstack_linked_list_iterator_has_next(&lit)) { 6806 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6807 if ((int)entry->address_type != peer_identity_addr_type) continue; 6808 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6809 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6810 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6811 } 6812 #endif 6813 6814 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6815 peer_identity_addreses); 6816 return true; 6817 } 6818 6819 // then add new entries 6820 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6821 uint8_t offset = i >> 3; 6822 uint8_t mask = 1 << (i & 7); 6823 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6824 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6825 bd_addr_t peer_identity_addreses; 6826 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6827 sm_key_t peer_irk; 6828 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6829 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6830 if (btstack_is_null(peer_irk, 16)) continue; 6831 local_irk = gap_get_persistent_irk(); 6832 // command uses format specifier 'P' that stores 16-byte value without flip 6833 uint8_t peer_irk_flipped[16]; 6834 reverse_128(local_irk, local_irk_flipped); 6835 reverse_128(peer_irk, peer_irk_flipped); 6836 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6837 peer_irk_flipped, local_irk_flipped); 6838 return true; 6839 } 6840 6841 // finally, set privacy mode 6842 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6843 uint8_t offset = i >> 3; 6844 uint8_t mask = 1 << (i & 7); 6845 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6846 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6847 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6848 // Network Privacy Mode is default 6849 continue; 6850 } 6851 bd_addr_t peer_identity_address; 6852 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6853 sm_key_t peer_irk; 6854 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6855 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6856 if (btstack_is_null(peer_irk, 16)) continue; 6857 // command uses format specifier 'P' that stores 16-byte value without flip 6858 uint8_t peer_irk_flipped[16]; 6859 reverse_128(peer_irk, peer_irk_flipped); 6860 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6861 return true; 6862 } 6863 break; 6864 6865 default: 6866 break; 6867 } 6868 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6869 } 6870 #endif 6871 6872 #ifdef ENABLE_LE_CENTRAL 6873 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6874 // LE Whitelist Management 6875 if (periodic_list_modification_pending){ 6876 // add/remove entries 6877 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6878 while (btstack_linked_list_iterator_has_next(&lit)){ 6879 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6880 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6881 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6882 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6883 return true; 6884 } 6885 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6886 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6887 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6888 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6889 return true; 6890 } 6891 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6892 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6893 btstack_memory_periodic_advertiser_list_entry_free(entry); 6894 } 6895 } 6896 } 6897 #endif 6898 #endif 6899 6900 #ifdef ENABLE_LE_CENTRAL 6901 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6902 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6903 if (hci_stack->le_past_set_default_params){ 6904 hci_stack->le_past_set_default_params = false; 6905 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6906 hci_stack->le_past_mode, 6907 hci_stack->le_past_skip, 6908 hci_stack->le_past_sync_timeout, 6909 hci_stack->le_past_cte_type); 6910 return true; 6911 } 6912 #endif 6913 #endif 6914 #endif 6915 6916 // postpone all actions until stack is fully working 6917 if (hci_stack->state != HCI_STATE_WORKING) return false; 6918 6919 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6920 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6921 6922 // Phase 4: restore state 6923 6924 #ifdef ENABLE_LE_CENTRAL 6925 // re-start scanning 6926 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6927 hci_stack->le_scanning_active = true; 6928 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6929 if (hci_le_extended_advertising_supported()){ 6930 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6931 } else 6932 #endif 6933 { 6934 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6935 } 6936 return true; 6937 } 6938 #endif 6939 6940 #ifdef ENABLE_LE_CENTRAL 6941 // re-start connecting 6942 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6943 bd_addr_t null_addr; 6944 memset(null_addr, 0, 6); 6945 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6946 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6947 hci_send_le_create_connection(1, 0, null_addr); 6948 return true; 6949 } 6950 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6951 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6952 switch(hci_stack->le_periodic_sync_request){ 6953 case LE_CONNECTING_DIRECT: 6954 case LE_CONNECTING_WHITELIST: 6955 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6956 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6957 hci_stack->le_periodic_sync_options, 6958 hci_stack->le_periodic_sync_advertising_sid, 6959 hci_stack->le_periodic_sync_advertiser_address_type, 6960 hci_stack->le_periodic_sync_advertiser_address, 6961 hci_stack->le_periodic_sync_skip, 6962 hci_stack->le_periodic_sync_timeout, 6963 hci_stack->le_periodic_sync_cte_type); 6964 return true; 6965 default: 6966 break; 6967 } 6968 } 6969 #endif 6970 #endif 6971 6972 #ifdef ENABLE_LE_PERIPHERAL 6973 // re-start advertising 6974 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6975 // check if advertisements should be enabled given 6976 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6977 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6978 6979 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6980 if (hci_le_extended_advertising_supported()){ 6981 const uint8_t advertising_handles[] = { 0 }; 6982 const uint16_t durations[] = { 0 }; 6983 const uint16_t max_events[] = { 0 }; 6984 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6985 } else 6986 #endif 6987 { 6988 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6989 } 6990 return true; 6991 } 6992 6993 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6994 if (hci_le_extended_advertising_supported()) { 6995 btstack_linked_list_iterator_t it; 6996 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6997 while (btstack_linked_list_iterator_has_next(&it)) { 6998 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6999 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 7000 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 7001 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 7002 const uint16_t durations[] = { advertising_set->enable_timeout }; 7003 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 7004 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 7005 return true; 7006 } 7007 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7008 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 7009 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 7010 uint8_t enable = 1; 7011 if (advertising_set->periodic_include_adi){ 7012 enable |= 2; 7013 } 7014 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 7015 return true; 7016 } 7017 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7018 } 7019 } 7020 #endif 7021 #endif 7022 7023 return false; 7024 } 7025 7026 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7027 static bool hci_run_iso_tasks(void){ 7028 btstack_linked_list_iterator_t it; 7029 7030 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 7031 return false; 7032 } 7033 7034 // BIG 7035 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 7036 while (btstack_linked_list_iterator_has_next(&it)){ 7037 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 7038 switch (big->state){ 7039 case LE_AUDIO_BIG_STATE_CREATE: 7040 hci_stack->iso_active_operation_group_id = big->params->big_handle; 7041 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7042 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7043 hci_send_cmd(&hci_le_create_big, 7044 big->params->big_handle, 7045 big->params->advertising_handle, 7046 big->params->num_bis, 7047 big->params->sdu_interval_us, 7048 big->params->max_sdu, 7049 big->params->max_transport_latency_ms, 7050 big->params->rtn, 7051 big->params->phy, 7052 big->params->packing, 7053 big->params->framing, 7054 big->params->encryption, 7055 big->params->broadcast_code); 7056 return true; 7057 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7058 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7059 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7060 return true; 7061 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7062 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7063 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 7064 return true; 7065 case LE_AUDIO_BIG_STATE_TERMINATE: 7066 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7067 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7068 return true; 7069 default: 7070 break; 7071 } 7072 } 7073 7074 // BIG Sync 7075 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 7076 while (btstack_linked_list_iterator_has_next(&it)){ 7077 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 7078 switch (big_sync->state){ 7079 case LE_AUDIO_BIG_STATE_CREATE: 7080 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 7081 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7082 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7083 hci_send_cmd(&hci_le_big_create_sync, 7084 big_sync->params->big_handle, 7085 big_sync->params->sync_handle, 7086 big_sync->params->encryption, 7087 big_sync->params->broadcast_code, 7088 big_sync->params->mse, 7089 big_sync->params->big_sync_timeout_10ms, 7090 big_sync->params->num_bis, 7091 big_sync->params->bis_indices); 7092 return true; 7093 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7094 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7095 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7096 return true; 7097 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7098 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7099 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7100 return true; 7101 case LE_AUDIO_BIG_STATE_TERMINATE: 7102 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7103 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7104 return true; 7105 default: 7106 break; 7107 } 7108 } 7109 7110 // CIG 7111 bool cig_active; 7112 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7113 while (btstack_linked_list_iterator_has_next(&it)) { 7114 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7115 uint8_t i; 7116 // Set CIG Parameters 7117 uint8_t cis_id[MAX_NR_CIS]; 7118 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7119 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7120 uint8_t phy_c_to_p[MAX_NR_CIS]; 7121 uint8_t phy_p_to_c[MAX_NR_CIS]; 7122 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7123 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7124 switch (cig->state) { 7125 case LE_AUDIO_CIG_STATE_CREATE: 7126 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7127 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7128 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7129 le_audio_cig_params_t * params = cig->params; 7130 for (i = 0; i < params->num_cis; i++) { 7131 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7132 cis_id[i] = cis_params->cis_id; 7133 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7134 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7135 phy_c_to_p[i] = cis_params->phy_c_to_p; 7136 phy_p_to_c[i] = cis_params->phy_p_to_c; 7137 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7138 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7139 } 7140 hci_send_cmd(&hci_le_set_cig_parameters, 7141 cig->cig_id, 7142 params->sdu_interval_c_to_p, 7143 params->sdu_interval_p_to_c, 7144 params->worst_case_sca, 7145 params->packing, 7146 params->framing, 7147 params->max_transport_latency_c_to_p, 7148 params->max_transport_latency_p_to_c, 7149 params->num_cis, 7150 cis_id, 7151 max_sdu_c_to_p, 7152 max_sdu_p_to_c, 7153 phy_c_to_p, 7154 phy_p_to_c, 7155 rtn_c_to_p, 7156 rtn_p_to_c 7157 ); 7158 return true; 7159 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7160 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7161 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7162 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7163 for (i=0;i<cig->num_cis;i++){ 7164 cig->cis_setup_active[i] = true; 7165 } 7166 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7167 return true; 7168 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7169 for ( ; cig->state_vars.next_cis < (cig->num_cis * 2) ; cig->state_vars.next_cis++ ){ 7170 // find next path to setup 7171 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7172 if (cig->cis_established[cis_index] == false) { 7173 continue; 7174 } 7175 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7176 bool setup = true; 7177 if (cis_direction == 0){ 7178 // 0 - input - host to controller 7179 // we are central => central to peripheral 7180 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7181 } else { 7182 // 1 - output - controller to host 7183 // we are central => peripheral to central 7184 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7185 } 7186 if (setup){ 7187 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7188 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7189 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7190 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7191 return true; 7192 } 7193 } 7194 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7195 break; 7196 case LE_AUDIO_CIG_STATE_REMOVE: 7197 // check if CIG Active 7198 cig_active = false; 7199 for (i = 0; i < cig->num_cis; i++) { 7200 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7201 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7202 if (stream != NULL){ 7203 cig_active = true; 7204 break; 7205 } 7206 } 7207 } 7208 if (cig_active == false){ 7209 btstack_linked_list_iterator_remove(&it); 7210 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7211 return true; 7212 } 7213 default: 7214 break; 7215 } 7216 } 7217 7218 // CIS Accept/Reject/Setup ISO Path/Close 7219 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7220 while (btstack_linked_list_iterator_has_next(&it)) { 7221 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7222 hci_con_handle_t con_handle; 7223 switch (iso_stream->state){ 7224 case HCI_ISO_STREAM_W2_ACCEPT: 7225 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7226 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7227 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7228 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7229 return true; 7230 case HCI_ISO_STREAM_W2_REJECT: 7231 con_handle = iso_stream->cis_handle; 7232 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7233 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7234 hci_iso_stream_finalize(iso_stream); 7235 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7236 return true; 7237 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7238 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7239 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7240 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7241 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7242 return true; 7243 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7244 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7245 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7246 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7247 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7248 return true; 7249 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7250 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7251 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7252 return true; 7253 default: 7254 break; 7255 } 7256 } 7257 7258 return false; 7259 } 7260 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7261 #endif 7262 7263 static bool hci_run_general_pending_commands(void){ 7264 btstack_linked_item_t * it; 7265 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7266 hci_connection_t * connection = (hci_connection_t *) it; 7267 7268 switch(connection->state){ 7269 case SEND_CREATE_CONNECTION: 7270 switch(connection->address_type){ 7271 #ifdef ENABLE_CLASSIC 7272 case BD_ADDR_TYPE_ACL: 7273 log_info("sending hci_create_connection"); 7274 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7275 break; 7276 #endif 7277 default: 7278 #ifdef ENABLE_BLE 7279 #ifdef ENABLE_LE_CENTRAL 7280 log_info("sending hci_le_create_connection"); 7281 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7282 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7283 connection->state = SENT_CREATE_CONNECTION; 7284 hci_send_le_create_connection(0, connection->address_type, connection->address); 7285 #endif 7286 #endif 7287 break; 7288 } 7289 return true; 7290 7291 #ifdef ENABLE_CLASSIC 7292 case RECEIVED_CONNECTION_REQUEST: 7293 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7294 log_info("sending hci_accept_connection_request"); 7295 connection->state = ACCEPTED_CONNECTION_REQUEST; 7296 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7297 return true; 7298 } 7299 break; 7300 #endif 7301 case SEND_DISCONNECT: 7302 connection->state = SENT_DISCONNECT; 7303 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7304 return true; 7305 7306 default: 7307 break; 7308 } 7309 7310 // no further commands if connection is about to get shut down 7311 if (connection->state == SENT_DISCONNECT) continue; 7312 7313 #ifdef ENABLE_CLASSIC 7314 7315 // Handling link key request requires remote supported features 7316 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7317 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7318 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7319 7320 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7321 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7322 if (have_link_key && security_level_sufficient){ 7323 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7324 } else { 7325 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7326 } 7327 return true; 7328 } 7329 7330 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7331 log_info("denying to pin request"); 7332 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7333 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7334 return true; 7335 } 7336 7337 // security assessment requires remote features 7338 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7339 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7340 hci_ssp_assess_security_on_io_cap_request(connection); 7341 // no return here as hci_ssp_assess_security_on_io_cap_request only sets AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY or AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY 7342 } 7343 7344 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7345 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7346 // set authentication requirements: 7347 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7348 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7349 connection->io_cap_request_auth_req = hci_stack->ssp_authentication_requirement & 1; 7350 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7351 connection->io_cap_request_auth_req |= 1; 7352 } 7353 bool bonding = hci_stack->bondable; 7354 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7355 // if we have received IO Cap Response, we're in responder role 7356 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7357 if (bonding && !remote_bonding){ 7358 log_info("Remote not bonding, dropping local flag"); 7359 bonding = false; 7360 } 7361 } 7362 if (bonding){ 7363 if (connection->bonding_flags & BONDING_DEDICATED){ 7364 connection->io_cap_request_auth_req |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7365 } else { 7366 connection->io_cap_request_auth_req |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7367 } 7368 } 7369 uint8_t have_oob_data = 0; 7370 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7371 if (connection->classic_oob_c_192 != NULL){ 7372 have_oob_data |= 1; 7373 } 7374 if (connection->classic_oob_c_256 != NULL){ 7375 have_oob_data |= 2; 7376 } 7377 #endif 7378 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, connection->io_cap_request_auth_req); 7379 return true; 7380 } 7381 7382 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7383 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7384 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7385 return true; 7386 } 7387 7388 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7389 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7390 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7391 const uint8_t zero[16] = { 0 }; 7392 const uint8_t * r_192 = zero; 7393 const uint8_t * c_192 = zero; 7394 const uint8_t * r_256 = zero; 7395 const uint8_t * c_256 = zero; 7396 // verify P-256 OOB 7397 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7398 c_256 = connection->classic_oob_c_256; 7399 if (connection->classic_oob_r_256 != NULL) { 7400 r_256 = connection->classic_oob_r_256; 7401 } 7402 } 7403 // verify P-192 OOB 7404 if ((connection->classic_oob_c_192 != NULL)) { 7405 c_192 = connection->classic_oob_c_192; 7406 if (connection->classic_oob_r_192 != NULL) { 7407 r_192 = connection->classic_oob_r_192; 7408 } 7409 } 7410 7411 // assess security 7412 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7413 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7414 if (need_level_4 && !can_reach_level_4){ 7415 log_info("Level 4 required, but not possible -> abort"); 7416 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7417 // send oob negative reply 7418 c_256 = NULL; 7419 c_192 = NULL; 7420 } 7421 7422 // Reply 7423 if (c_256 != zero) { 7424 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7425 } else if (c_192 != zero){ 7426 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7427 } else { 7428 hci_stack->classic_oob_con_handle = connection->con_handle; 7429 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7430 } 7431 return true; 7432 } 7433 #endif 7434 7435 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7436 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7437 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7438 return true; 7439 } 7440 7441 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7442 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7443 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7444 return true; 7445 } 7446 7447 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7448 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7449 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7450 return true; 7451 } 7452 7453 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7454 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7455 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7456 connection->state = SENT_DISCONNECT; 7457 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7458 return true; 7459 } 7460 7461 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7462 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7463 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7464 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7465 return true; 7466 } 7467 7468 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7469 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7470 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7471 return true; 7472 } 7473 7474 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7475 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7476 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7477 return true; 7478 } 7479 7480 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7481 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7482 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7483 return true; 7484 } 7485 7486 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7487 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7488 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7489 return true; 7490 } 7491 7492 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7493 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7494 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7495 return true; 7496 } 7497 #endif 7498 7499 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7500 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7501 #ifdef ENABLE_CLASSIC 7502 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7503 #endif 7504 if (connection->state != SENT_DISCONNECT){ 7505 connection->state = SENT_DISCONNECT; 7506 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7507 return true; 7508 } 7509 } 7510 7511 #ifdef ENABLE_CLASSIC 7512 uint16_t sniff_min_interval; 7513 switch (connection->sniff_min_interval){ 7514 case 0: 7515 break; 7516 case 0xffff: 7517 connection->sniff_min_interval = 0; 7518 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7519 return true; 7520 default: 7521 sniff_min_interval = connection->sniff_min_interval; 7522 connection->sniff_min_interval = 0; 7523 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7524 return true; 7525 } 7526 7527 if (connection->sniff_subrating_max_latency != 0xffff){ 7528 uint16_t max_latency = connection->sniff_subrating_max_latency; 7529 connection->sniff_subrating_max_latency = 0; 7530 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7531 return true; 7532 } 7533 7534 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7535 uint8_t service_type = (uint8_t) connection->qos_service_type; 7536 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7537 hci_send_cmd(&hci_qos_setup, connection->con_handle, 0, service_type, connection->qos_token_rate, connection->qos_peak_bandwidth, connection->qos_latency, connection->qos_delay_variation); 7538 return true; 7539 } 7540 7541 if (connection->request_role != HCI_ROLE_INVALID){ 7542 hci_role_t role = connection->request_role; 7543 connection->request_role = HCI_ROLE_INVALID; 7544 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7545 return true; 7546 } 7547 #endif 7548 7549 if (connection->gap_connection_tasks != 0){ 7550 #ifdef ENABLE_CLASSIC 7551 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7552 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7553 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7554 return true; 7555 } 7556 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7557 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7558 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7559 return true; 7560 } 7561 #endif 7562 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7563 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7564 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7565 return true; 7566 } 7567 #ifdef ENABLE_BLE 7568 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7569 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7570 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7571 return true; 7572 } 7573 #endif 7574 } 7575 7576 #ifdef ENABLE_BLE 7577 switch (connection->le_con_parameter_update_state){ 7578 // response to L2CAP CON PARAMETER UPDATE REQUEST 7579 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7580 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7581 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7582 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7583 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7584 return true; 7585 case CON_PARAMETER_UPDATE_REPLY: 7586 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7587 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7588 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7589 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7590 return true; 7591 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7592 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7593 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7594 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7595 return true; 7596 default: 7597 break; 7598 } 7599 if (connection->le_phy_update_all_phys != 0xffu){ 7600 uint8_t all_phys = connection->le_phy_update_all_phys; 7601 connection->le_phy_update_all_phys = 0xff; 7602 hci_send_cmd(&hci_le_set_phy, connection->con_handle, all_phys, connection->le_phy_update_tx_phys, connection->le_phy_update_rx_phys, connection->le_phy_update_phy_options); 7603 return true; 7604 } 7605 if (connection->le_subrate_min > 0){ 7606 uint16_t subrate_min = connection->le_subrate_min; 7607 connection->le_subrate_min = 0; 7608 hci_send_cmd(&hci_le_subrate_request, connection->con_handle, subrate_min, connection->le_subrate_max, connection->le_subrate_max_latency, 7609 connection->le_subrate_continuation_number, connection->le_supervision_timeout); 7610 return true; 7611 } 7612 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7613 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7614 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7615 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7616 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7617 return true; 7618 } 7619 if (connection->le_past_advertising_handle != 0xff){ 7620 uint8_t advertising_handle = connection->le_past_advertising_handle; 7621 connection->le_past_advertising_handle = 0xff; 7622 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7623 return true; 7624 } 7625 #endif 7626 #endif 7627 } 7628 return false; 7629 } 7630 7631 static void hci_run(void){ 7632 7633 // stack state sub statemachines 7634 switch (hci_stack->state) { 7635 case HCI_STATE_INITIALIZING: 7636 hci_initializing_run(); 7637 break; 7638 case HCI_STATE_HALTING: 7639 hci_halting_run(); 7640 break; 7641 case HCI_STATE_FALLING_ASLEEP: 7642 hci_falling_asleep_run(); 7643 break; 7644 default: 7645 break; 7646 } 7647 7648 // allow to run after initialization to working transition 7649 if (hci_stack->state != HCI_STATE_WORKING){ 7650 return; 7651 } 7652 7653 bool done; 7654 7655 // send continuation fragments first, as they block the prepared packet buffer 7656 done = hci_run_acl_fragments(); 7657 if (done) return; 7658 7659 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7660 done = hci_run_iso_fragments(); 7661 if (done) return; 7662 #endif 7663 7664 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7665 // send host num completed packets next as they don't require num_cmd_packets > 0 7666 if (!hci_can_send_command_packet_transport()) return; 7667 if (hci_stack->host_completed_packets){ 7668 hci_host_num_completed_packets(); 7669 return; 7670 } 7671 #endif 7672 7673 if (!hci_can_send_command_packet_now()) return; 7674 7675 // global/non-connection oriented commands 7676 7677 7678 #ifdef ENABLE_CLASSIC 7679 // general gap classic 7680 done = hci_run_general_gap_classic(); 7681 if (done) return; 7682 #endif 7683 7684 #ifdef ENABLE_BLE 7685 // general gap le 7686 done = hci_run_general_gap_le(); 7687 if (done) return; 7688 7689 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7690 // ISO related tasks, e.g. BIG create/terminate/sync 7691 done = hci_run_iso_tasks(); 7692 if (done) return; 7693 #endif 7694 #endif 7695 7696 // send pending HCI commands 7697 hci_run_general_pending_commands(); 7698 } 7699 7700 #ifdef ENABLE_CLASSIC 7701 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7702 // bits 6-9 are 'don't use' 7703 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7704 7705 // restrict packet types to local and remote supported 7706 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7707 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7708 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7709 } 7710 #endif 7711 7712 // funnel for sending cmd packet using single outgoing buffer 7713 static uint8_t hci_send_prepared_cmd_packet(void) { 7714 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7715 // cache opcode 7716 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 7717 // get size 7718 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7719 // send packet 7720 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7721 // release packet buffer on error or for synchronous transport implementations 7722 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7723 hci_release_packet_buffer(); 7724 } 7725 return status; 7726 } 7727 7728 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7729 // house-keeping 7730 7731 #ifdef ENABLE_CLASSIC 7732 bd_addr_t addr; 7733 hci_connection_t * conn; 7734 #endif 7735 #ifdef ENABLE_LE_CENTRAL 7736 uint8_t initiator_filter_policy; 7737 #endif 7738 7739 uint16_t opcode = little_endian_read_16(packet, 0); 7740 switch (opcode) { 7741 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7742 hci_stack->loopback_mode = packet[3]; 7743 break; 7744 7745 #ifdef ENABLE_CLASSIC 7746 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7747 reverse_bd_addr(&packet[3], addr); 7748 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7749 7750 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7751 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7752 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7753 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7754 } 7755 7756 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7757 if (!conn) { 7758 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7759 if (!conn) { 7760 // notify client that alloc failed 7761 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7762 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7763 } 7764 conn->state = SEND_CREATE_CONNECTION; 7765 } 7766 7767 log_info("conn state %u", conn->state); 7768 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7769 switch (conn->state) { 7770 // if connection active exists 7771 case OPEN: 7772 // and OPEN, emit connection complete command 7773 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7774 // packet not sent to controller 7775 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7776 case RECEIVED_DISCONNECTION_COMPLETE: 7777 // create connection triggered in disconnect complete event, let's do it now 7778 break; 7779 case SEND_CREATE_CONNECTION: 7780 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7781 if (hci_classic_operation_active()){ 7782 return ERROR_CODE_SUCCESS; 7783 } 7784 #endif 7785 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7786 break; 7787 default: 7788 // otherwise, just ignore as it is already in the open process 7789 // packet not sent to controller 7790 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7791 } 7792 conn->state = SENT_CREATE_CONNECTION; 7793 7794 // track outgoing connection 7795 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7796 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7797 break; 7798 7799 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7800 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7801 if (conn == NULL) { 7802 // neither SCO nor ACL connection for con handle 7803 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7804 } else { 7805 uint16_t remote_supported_sco_packets; 7806 switch (conn->address_type){ 7807 case BD_ADDR_TYPE_ACL: 7808 // assert SCO connection does not exit 7809 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7810 return ERROR_CODE_COMMAND_DISALLOWED; 7811 } 7812 // cache remote sco packet types 7813 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7814 7815 // allocate connection struct 7816 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7817 HCI_ROLE_MASTER); 7818 if (!conn) { 7819 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7820 } 7821 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7822 break; 7823 case BD_ADDR_TYPE_SCO: 7824 // update of existing SCO connection 7825 break; 7826 default: 7827 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7828 } 7829 } 7830 7831 // conn refers to hci connection of type sco now 7832 7833 conn->state = SENT_CREATE_CONNECTION; 7834 7835 // track outgoing connection to handle command status with error 7836 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7837 (void) memcpy(hci_stack->outgoing_addr, conn->address, 6); 7838 7839 // setup_synchronous_connection? Voice setting at offset 22 7840 // TODO: compare to current setting if sco connection already active 7841 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7842 7843 // derive sco payload length from packet types 7844 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7845 break; 7846 7847 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7848 // get SCO connection 7849 reverse_bd_addr(&packet[3], addr); 7850 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7851 if (conn == NULL){ 7852 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7853 } 7854 7855 conn->state = ACCEPTED_CONNECTION_REQUEST; 7856 7857 // track outgoing connection to handle command status with error 7858 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7859 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7860 7861 // accept_synchronous_connection? Voice setting at offset 18 7862 // TODO: compare to current setting if sco connection already active 7863 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7864 7865 // derive sco payload length from packet types 7866 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7867 break; 7868 #endif 7869 7870 #ifdef ENABLE_BLE 7871 #ifdef ENABLE_LE_CENTRAL 7872 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7873 // white list used? 7874 initiator_filter_policy = packet[7]; 7875 switch (initiator_filter_policy) { 7876 case 0: 7877 // whitelist not used 7878 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7879 break; 7880 case 1: 7881 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7882 break; 7883 default: 7884 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7885 break; 7886 } 7887 // track outgoing connection 7888 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7889 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7890 break; 7891 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7892 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7893 // white list used? 7894 initiator_filter_policy = packet[3]; 7895 switch (initiator_filter_policy) { 7896 case 0: 7897 // whitelist not used 7898 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7899 break; 7900 case 1: 7901 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7902 break; 7903 default: 7904 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7905 break; 7906 } 7907 // track outgoing connection 7908 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7909 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7910 break; 7911 #endif 7912 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7913 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7914 break; 7915 #endif 7916 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7917 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7918 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7919 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7920 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7921 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7922 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7923 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7924 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7925 case HCI_OPCODE_HCI_LE_READ_PHY: 7926 case HCI_OPCODE_HCI_LE_SET_PHY: 7927 // conection handle is first command parameter 7928 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7929 break; 7930 #endif 7931 #endif /* ENABLE_BLE */ 7932 default: 7933 break; 7934 } 7935 7936 hci_stack->num_cmd_packets--; 7937 7938 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7939 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7940 uint8_t status; 7941 if (err == 0){ 7942 status = ERROR_CODE_SUCCESS; 7943 } else { 7944 status = ERROR_CODE_HARDWARE_FAILURE; 7945 } 7946 return status; 7947 } 7948 7949 // disconnect because of security block 7950 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7951 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7952 if (!connection) return; 7953 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7954 } 7955 7956 7957 // Configure Secure Simple Pairing 7958 7959 #ifdef ENABLE_CLASSIC 7960 7961 // enable will enable SSP during init 7962 void gap_ssp_set_enable(int enable){ 7963 hci_stack->ssp_enable = enable; 7964 } 7965 7966 static int hci_local_ssp_activated(void){ 7967 return gap_ssp_supported() && hci_stack->ssp_enable; 7968 } 7969 7970 // if set, BTstack will respond to io capability request using authentication requirement 7971 void gap_ssp_set_io_capability(int io_capability){ 7972 hci_stack->ssp_io_capability = io_capability; 7973 } 7974 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7975 hci_stack->ssp_authentication_requirement = authentication_requirement; 7976 } 7977 7978 // if set, BTstack will confirm a numeric comparison and enter '000000' if requested 7979 void gap_ssp_set_auto_accept(int auto_accept){ 7980 hci_stack->ssp_auto_accept = auto_accept; 7981 } 7982 7983 void gap_secure_connections_enable(bool enable){ 7984 hci_stack->secure_connections_enable = enable; 7985 } 7986 bool gap_secure_connections_active(void){ 7987 return hci_stack->secure_connections_active; 7988 } 7989 7990 #endif 7991 7992 // va_list part of hci_send_cmd 7993 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7994 if (!hci_can_send_command_packet_now()){ 7995 log_error("hci_send_cmd called but cannot send packet now"); 7996 return ERROR_CODE_COMMAND_DISALLOWED; 7997 } 7998 7999 hci_reserve_packet_buffer(); 8000 hci_cmd_create_from_template(hci_stack->hci_packet_buffer, cmd, argptr); 8001 return hci_send_prepared_cmd_packet(); 8002 } 8003 8004 /** 8005 * pre: num_commands >= 0 - it's allowed to send a command to the controller 8006 */ 8007 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 8008 va_list argptr; 8009 va_start(argptr, cmd); 8010 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 8011 va_end(argptr); 8012 return status; 8013 } 8014 8015 // Forward HCI events and create non-HCI events 8016 8017 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 8018 // dump packet 8019 if (dump) { 8020 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 8021 } 8022 8023 // dispatch to all event handlers 8024 btstack_linked_list_iterator_t it; 8025 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 8026 while (btstack_linked_list_iterator_has_next(&it)){ 8027 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 8028 entry->callback(HCI_EVENT_PACKET, 0, event, size); 8029 } 8030 } 8031 8032 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump){ 8033 #ifndef ENABLE_LOG_BTSTACK_EVENTS 8034 dump = 0; 8035 #endif 8036 hci_emit_event(event, size, dump); 8037 } 8038 8039 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 8040 if (!hci_stack->acl_packet_handler) return; 8041 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 8042 } 8043 8044 #ifdef ENABLE_CLASSIC 8045 static void hci_notify_if_sco_can_send_now(void){ 8046 // notify SCO sender if waiting 8047 if (!hci_stack->sco_waiting_for_can_send_now) return; 8048 if (hci_can_send_sco_packet_now()){ 8049 hci_stack->sco_waiting_for_can_send_now = 0; 8050 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 8051 hci_dump_btstack_event(event, sizeof(event)); 8052 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 8053 } 8054 } 8055 8056 // parsing end emitting has been merged to reduce code size 8057 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 8058 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 8059 8060 uint8_t * eir_data; 8061 ad_context_t context; 8062 const uint8_t * name; 8063 uint8_t name_len; 8064 8065 if (size < 3) return; 8066 8067 int event_type = hci_event_packet_get_type(packet); 8068 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 8069 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 8070 8071 switch (event_type){ 8072 case HCI_EVENT_INQUIRY_RESULT: 8073 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8074 if (size != (3 + (num_responses * 14))) return; 8075 break; 8076 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8077 if (size != 257) return; 8078 if (num_responses != 1) return; 8079 break; 8080 default: 8081 return; 8082 } 8083 8084 // event[1] is set at the end 8085 int i; 8086 for (i=0; i<num_responses;i++){ 8087 memset(event, 0, sizeof(event)); 8088 event[0] = GAP_EVENT_INQUIRY_RESULT; 8089 uint8_t event_size = 27; // if name is not set by EIR 8090 8091 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 8092 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 8093 (void)memcpy(&event[9], 8094 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 8095 3); // class of device 8096 (void)memcpy(&event[12], 8097 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 8098 2); // clock offset 8099 8100 switch (event_type){ 8101 case HCI_EVENT_INQUIRY_RESULT: 8102 // 14,15,16,17 = 0, size 18 8103 break; 8104 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8105 event[14] = 1; 8106 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8107 // 16,17 = 0, size 18 8108 break; 8109 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8110 event[14] = 1; 8111 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8112 // EIR packets only contain a single inquiry response 8113 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 8114 name = NULL; 8115 // Iterate over EIR data 8116 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 8117 uint8_t data_type = ad_iterator_get_data_type(&context); 8118 uint8_t data_size = ad_iterator_get_data_len(&context); 8119 const uint8_t * data = ad_iterator_get_data(&context); 8120 // Prefer Complete Local Name over Shortened Local Name 8121 switch (data_type){ 8122 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 8123 if (name) continue; 8124 /* fall through */ 8125 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 8126 name = data; 8127 name_len = data_size; 8128 break; 8129 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8130 if (data_size != 8) break; 8131 event[16] = 1; 8132 memcpy(&event[17], data, 8); 8133 break; 8134 default: 8135 break; 8136 } 8137 } 8138 if (name){ 8139 event[25] = 1; 8140 // truncate name if needed 8141 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8142 event[26] = len; 8143 (void)memcpy(&event[27], name, len); 8144 event_size += len; 8145 } 8146 break; 8147 default: 8148 return; 8149 } 8150 event[1] = event_size - 2; 8151 hci_emit_btstack_event(event, event_size, 1); 8152 } 8153 } 8154 #endif 8155 8156 void hci_emit_state(void){ 8157 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8158 uint8_t event[3]; 8159 event[0] = BTSTACK_EVENT_STATE; 8160 event[1] = sizeof(event) - 2u; 8161 event[2] = hci_stack->state; 8162 hci_emit_btstack_event(event, sizeof(event), 1); 8163 } 8164 8165 #ifdef ENABLE_CLASSIC 8166 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8167 uint8_t event[13]; 8168 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8169 event[1] = sizeof(event) - 2; 8170 event[2] = status; 8171 little_endian_store_16(event, 3, con_handle); 8172 reverse_bd_addr(address, &event[5]); 8173 event[11] = 1; // ACL connection 8174 event[12] = 0; // encryption disabled 8175 hci_emit_btstack_event(event, sizeof(event), 1); 8176 } 8177 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8178 if (disable_l2cap_timeouts) return; 8179 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8180 uint8_t event[4]; 8181 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8182 event[1] = sizeof(event) - 2; 8183 little_endian_store_16(event, 2, conn->con_handle); 8184 hci_emit_btstack_event(event, sizeof(event), 1); 8185 } 8186 #endif 8187 8188 #ifdef ENABLE_BLE 8189 #ifdef ENABLE_LE_CENTRAL 8190 static void hci_emit_le_connection_complete(uint8_t address_type, const bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8191 uint8_t hci_event[21]; 8192 hci_event[0] = HCI_EVENT_LE_META; 8193 hci_event[1] = sizeof(hci_event) - 2u; 8194 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8195 hci_event[3] = status; 8196 little_endian_store_16(hci_event, 4, con_handle); 8197 hci_event[6] = 0; // TODO: role 8198 hci_event[7] = address_type; 8199 reverse_bd_addr(address, &hci_event[8]); 8200 little_endian_store_16(hci_event, 14, 0); // interval 8201 little_endian_store_16(hci_event, 16, 0); // latency 8202 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8203 hci_event[20] = 0; // master clock accuracy 8204 hci_emit_btstack_event(hci_event, sizeof(hci_event), 1); 8205 // emit GAP event, too 8206 uint8_t gap_event[36]; 8207 hci_create_gap_connection_complete_event(hci_event, gap_event); 8208 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 8209 } 8210 #endif 8211 #endif 8212 8213 static void hci_emit_transport_packet_sent(void){ 8214 // notify upper stack that it might be possible to send again 8215 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8216 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 8217 } 8218 8219 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8220 uint8_t event[6]; 8221 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8222 event[1] = sizeof(event) - 2u; 8223 event[2] = 0; // status = OK 8224 little_endian_store_16(event, 3, con_handle); 8225 event[5] = reason; 8226 hci_emit_btstack_event(event, sizeof(event), 1); 8227 } 8228 8229 static void hci_emit_nr_connections_changed(void){ 8230 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8231 uint8_t event[3]; 8232 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8233 event[1] = sizeof(event) - 2u; 8234 event[2] = nr_hci_connections(); 8235 hci_emit_btstack_event(event, sizeof(event), 1); 8236 } 8237 8238 static void hci_emit_hci_open_failed(void){ 8239 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8240 uint8_t event[2]; 8241 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8242 event[1] = sizeof(event) - 2u; 8243 hci_emit_btstack_event(event, sizeof(event), 1); 8244 } 8245 8246 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8247 log_info("hci_emit_dedicated_bonding_result %u ", status); 8248 uint8_t event[9]; 8249 int pos = 0; 8250 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8251 event[pos++] = sizeof(event) - 2u; 8252 event[pos++] = status; 8253 reverse_bd_addr(address, &event[pos]); 8254 hci_emit_btstack_event(event, sizeof(event), 1); 8255 } 8256 8257 8258 #ifdef ENABLE_CLASSIC 8259 8260 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8261 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8262 uint8_t event[5]; 8263 int pos = 0; 8264 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8265 event[pos++] = sizeof(event) - 2; 8266 little_endian_store_16(event, 2, con_handle); 8267 pos += 2; 8268 event[pos++] = level; 8269 hci_emit_btstack_event(event, sizeof(event), 1); 8270 } 8271 8272 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8273 if (!connection) return LEVEL_0; 8274 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8275 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8276 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8277 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8278 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8279 // LEVEL 4 always requires 128 bit encryption key size 8280 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8281 security_level = LEVEL_3; 8282 } 8283 return security_level; 8284 } 8285 8286 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8287 uint8_t event[4]; 8288 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8289 event[1] = sizeof(event) - 2; 8290 event[2] = discoverable; 8291 event[3] = connectable; 8292 hci_emit_btstack_event(event, sizeof(event), 1); 8293 } 8294 8295 // query if remote side supports eSCO 8296 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8297 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8298 if (!connection) return false; 8299 return (connection->remote_supported_features[0] & 1) != 0; 8300 } 8301 8302 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8303 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8304 if (!connection) return 0; 8305 return connection->remote_supported_sco_packets; 8306 } 8307 8308 static bool hci_ssp_supported(hci_connection_t * connection){ 8309 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8310 return (connection->bonding_flags & mask) == mask; 8311 } 8312 8313 // query if remote side supports SSP 8314 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8315 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8316 if (!connection) return false; 8317 return hci_ssp_supported(connection) ? 1 : 0; 8318 } 8319 8320 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8321 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8322 } 8323 8324 /** 8325 * Check if remote supported features query has completed 8326 */ 8327 bool hci_remote_features_available(hci_con_handle_t handle){ 8328 hci_connection_t * connection = hci_connection_for_handle(handle); 8329 if (!connection) return false; 8330 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8331 } 8332 8333 /** 8334 * Trigger remote supported features query 8335 */ 8336 8337 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8338 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8339 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8340 } 8341 } 8342 8343 void hci_remote_features_query(hci_con_handle_t con_handle){ 8344 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8345 if (!connection) return; 8346 hci_trigger_remote_features_for_connection(connection); 8347 hci_run(); 8348 } 8349 8350 // GAP API 8351 /** 8352 * @bbrief enable/disable bonding. default is enabled 8353 * @praram enabled 8354 */ 8355 void gap_set_bondable_mode(int enable){ 8356 hci_stack->bondable = enable ? 1 : 0; 8357 } 8358 /** 8359 * @brief Get bondable mode. 8360 * @return 1 if bondable 8361 */ 8362 int gap_get_bondable_mode(void){ 8363 return hci_stack->bondable; 8364 } 8365 8366 /** 8367 * @brief map link keys to security levels 8368 */ 8369 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8370 switch (link_key_type){ 8371 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8372 return LEVEL_4; 8373 case COMBINATION_KEY: 8374 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8375 return LEVEL_3; 8376 default: 8377 return LEVEL_2; 8378 } 8379 } 8380 8381 /** 8382 * @brief map link keys to secure connection yes/no 8383 */ 8384 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8385 switch (link_key_type){ 8386 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8387 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8388 return true; 8389 default: 8390 return false; 8391 } 8392 } 8393 8394 /** 8395 * @brief map link keys to authenticated 8396 */ 8397 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8398 switch (link_key_type){ 8399 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8400 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8401 return true; 8402 default: 8403 return false; 8404 } 8405 } 8406 8407 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8408 log_info("gap_mitm_protection_required_for_security_level %u", level); 8409 return level > LEVEL_2; 8410 } 8411 8412 /** 8413 * @brief get current security level 8414 */ 8415 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8416 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8417 if (!connection) return LEVEL_0; 8418 return gap_security_level_for_connection(connection); 8419 } 8420 8421 /** 8422 * @brief request connection to device to 8423 * @result GAP_AUTHENTICATION_RESULT 8424 */ 8425 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8426 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8427 if (!connection){ 8428 hci_emit_security_level(con_handle, LEVEL_0); 8429 return; 8430 } 8431 8432 btstack_assert(hci_is_le_connection(connection) == false); 8433 8434 // Core Spec 5.2, GAP 5.2.2: "When in Secure Connections Only mode, all services (except those allowed to have Security Mode 4, Level 0) 8435 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8436 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8437 requested_level = LEVEL_4; 8438 } 8439 8440 gap_security_level_t current_level = gap_security_level(con_handle); 8441 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8442 requested_level, connection->requested_security_level, current_level); 8443 8444 // authentication active if authentication request was sent or planned level > 0 8445 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8446 if (authentication_active){ 8447 // authentication already active 8448 if (connection->requested_security_level < requested_level){ 8449 // increase requested level as new level is higher 8450 // TODO: handle re-authentication when done 8451 connection->requested_security_level = requested_level; 8452 } 8453 } else { 8454 // no request active, notify if security sufficient 8455 if (requested_level <= current_level){ 8456 hci_emit_security_level(con_handle, current_level); 8457 return; 8458 } 8459 8460 // store request 8461 connection->requested_security_level = requested_level; 8462 8463 // start to authenticate connection 8464 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8465 8466 // request remote features if not already active, also trigger hci_run 8467 hci_remote_features_query(con_handle); 8468 } 8469 } 8470 8471 /** 8472 * @brief start dedicated bonding with device. disconnect after bonding 8473 * @param device 8474 * @param request MITM protection 8475 * @result GAP_DEDICATED_BONDING_COMPLETE 8476 */ 8477 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8478 8479 // create connection state machine 8480 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8481 8482 if (!connection){ 8483 return BTSTACK_MEMORY_ALLOC_FAILED; 8484 } 8485 8486 // delete link key 8487 gap_drop_link_key_for_bd_addr(device); 8488 8489 // configure LEVEL_2/3, dedicated bonding 8490 connection->state = SEND_CREATE_CONNECTION; 8491 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8492 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8493 connection->bonding_flags = BONDING_DEDICATED; 8494 8495 hci_run(); 8496 8497 return 0; 8498 } 8499 8500 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8501 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8502 if (connection == NULL){ 8503 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8504 } 8505 if (defer){ 8506 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8507 } else { 8508 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8509 // trigger disconnect 8510 hci_run(); 8511 } 8512 return ERROR_CODE_SUCCESS; 8513 } 8514 8515 void gap_set_local_name(const char * local_name){ 8516 hci_stack->local_name = local_name; 8517 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8518 // also update EIR if not set by user 8519 if (hci_stack->eir_data == NULL){ 8520 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8521 } 8522 hci_run(); 8523 } 8524 #endif 8525 8526 8527 #ifdef ENABLE_BLE 8528 8529 #ifdef ENABLE_LE_CENTRAL 8530 void gap_start_scan(void){ 8531 hci_stack->le_scanning_enabled = true; 8532 hci_run(); 8533 } 8534 8535 void gap_stop_scan(void){ 8536 hci_stack->le_scanning_enabled = false; 8537 hci_run(); 8538 } 8539 8540 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8541 hci_stack->le_scan_type = scan_type; 8542 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8543 hci_stack->le_scan_interval = scan_interval; 8544 hci_stack->le_scan_window = scan_window; 8545 hci_stack->le_scanning_param_update = true; 8546 hci_run(); 8547 } 8548 8549 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8550 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8551 } 8552 8553 void gap_set_scan_duplicate_filter(bool enabled){ 8554 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8555 } 8556 8557 void gap_set_scan_phys(uint8_t phys){ 8558 // LE Coded and LE 1M PHY 8559 hci_stack->le_scan_phys = phys & 0x05; 8560 } 8561 8562 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8563 // disallow le connection if outgoing already active 8564 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8565 log_error("le connect already active"); 8566 return ERROR_CODE_COMMAND_DISALLOWED; 8567 } 8568 8569 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8570 if (conn == NULL) { 8571 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8572 if (conn == NULL){ 8573 // alloc failed 8574 log_info("gap_connect: failed to alloc hci_connection_t"); 8575 return BTSTACK_MEMORY_ALLOC_FAILED; 8576 } 8577 } else { 8578 switch (conn->state) { 8579 case RECEIVED_DISCONNECTION_COMPLETE: 8580 // connection was just disconnected, reset state and allow re-connect 8581 conn->role = HCI_ROLE_MASTER; 8582 break; 8583 default: 8584 return ERROR_CODE_COMMAND_DISALLOWED; 8585 } 8586 } 8587 8588 // set le connecting state 8589 if (hci_is_le_connection_type(addr_type)){ 8590 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8591 } 8592 8593 // trigger connect 8594 log_info("gap_connect: send create connection next"); 8595 conn->state = SEND_CREATE_CONNECTION; 8596 hci_run(); 8597 return ERROR_CODE_SUCCESS; 8598 } 8599 8600 // @assumption: only a single outgoing LE Connection exists 8601 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8602 btstack_linked_item_t *it; 8603 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8604 hci_connection_t * conn = (hci_connection_t *) it; 8605 if (hci_is_le_connection(conn)){ 8606 switch (conn->state){ 8607 case SEND_CREATE_CONNECTION: 8608 case SENT_CREATE_CONNECTION: 8609 return conn; 8610 default: 8611 break; 8612 }; 8613 } 8614 } 8615 return NULL; 8616 } 8617 8618 uint8_t gap_connect_cancel(void){ 8619 hci_connection_t * conn; 8620 switch (hci_stack->le_connecting_request){ 8621 case LE_CONNECTING_IDLE: 8622 break; 8623 case LE_CONNECTING_WHITELIST: 8624 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8625 hci_run(); 8626 break; 8627 case LE_CONNECTING_DIRECT: 8628 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8629 conn = gap_get_outgoing_le_connection(); 8630 if (conn == NULL){ 8631 hci_run(); 8632 } else { 8633 switch (conn->state){ 8634 case SEND_CREATE_CONNECTION: 8635 // skip sending create connection and emit event instead 8636 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8637 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8638 btstack_memory_hci_connection_free( conn ); 8639 break; 8640 case SENT_CREATE_CONNECTION: 8641 // let hci_run_general_gap_le cancel outgoing connection 8642 hci_run(); 8643 break; 8644 default: 8645 break; 8646 } 8647 } 8648 break; 8649 default: 8650 btstack_unreachable(); 8651 break; 8652 } 8653 return ERROR_CODE_SUCCESS; 8654 } 8655 8656 /** 8657 * @brief Set connection parameters for outgoing connections 8658 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8659 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8660 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8661 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8662 * @param conn_latency, default: 4 8663 * @param supervision_timeout (unit: 10ms), default: 720 ms 8664 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8665 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8666 */ 8667 8668 void gap_set_connection_phys(uint8_t phys){ 8669 // LE Coded, LE 1M, LE 2M PHY 8670 hci_stack->le_connection_phys = phys & 7; 8671 } 8672 8673 #endif 8674 8675 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8676 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8677 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8678 hci_stack->le_connection_scan_interval = conn_scan_interval; 8679 hci_stack->le_connection_scan_window = conn_scan_window; 8680 hci_stack->le_connection_interval_min = conn_interval_min; 8681 hci_stack->le_connection_interval_max = conn_interval_max; 8682 hci_stack->le_connection_latency = conn_latency; 8683 hci_stack->le_supervision_timeout = supervision_timeout; 8684 hci_stack->le_minimum_ce_length = min_ce_length; 8685 hci_stack->le_maximum_ce_length = max_ce_length; 8686 } 8687 8688 /** 8689 * @brief Updates the connection parameters for a given LE connection 8690 * @param handle 8691 * @param conn_interval_min (unit: 1.25ms) 8692 * @param conn_interval_max (unit: 1.25ms) 8693 * @param conn_latency 8694 * @param supervision_timeout (unit: 10ms) 8695 * @return 0 if ok 8696 */ 8697 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8698 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8699 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8700 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8701 connection->le_conn_interval_min = conn_interval_min; 8702 connection->le_conn_interval_max = conn_interval_max; 8703 connection->le_conn_latency = conn_latency; 8704 connection->le_supervision_timeout = supervision_timeout; 8705 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8706 hci_run(); 8707 return 0; 8708 } 8709 8710 /** 8711 * @brief Request an update of the connection parameter for a given LE connection 8712 * @param handle 8713 * @param conn_interval_min (unit: 1.25ms) 8714 * @param conn_interval_max (unit: 1.25ms) 8715 * @param conn_latency 8716 * @param supervision_timeout (unit: 10ms) 8717 * @return 0 if ok 8718 */ 8719 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8720 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8721 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8722 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8723 connection->le_conn_interval_min = conn_interval_min; 8724 connection->le_conn_interval_max = conn_interval_max; 8725 connection->le_conn_latency = conn_latency; 8726 connection->le_supervision_timeout = supervision_timeout; 8727 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8728 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8729 hci_emit_btstack_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8730 return 0; 8731 } 8732 8733 uint8_t gap_request_connection_subrating(hci_con_handle_t con_handle, uint16_t subrate_min, uint16_t subrate_max, 8734 uint16_t max_latency, uint16_t continuation_number, uint16_t supervision_timeout){ 8735 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8736 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8737 8738 connection->le_subrate_min = subrate_min; 8739 connection->le_subrate_max = subrate_max; 8740 connection->le_subrate_max_latency = max_latency; 8741 connection->le_subrate_continuation_number = continuation_number; 8742 connection->le_supervision_timeout = supervision_timeout; 8743 hci_run(); 8744 return ERROR_CODE_SUCCESS; 8745 } 8746 8747 #ifdef ENABLE_LE_PERIPHERAL 8748 8749 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8750 static void hci_assert_advertisement_set_0_ready(void){ 8751 // force advertising set creation for legacy LE Advertising 8752 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8753 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8754 } 8755 } 8756 #endif 8757 8758 /** 8759 * @brief Set Advertisement Data 8760 * @param advertising_data_length 8761 * @param advertising_data (max 31 octets) 8762 * @note data is not copied, pointer has to stay valid 8763 */ 8764 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8765 hci_stack->le_advertisements_data_len = advertising_data_length; 8766 hci_stack->le_advertisements_data = advertising_data; 8767 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8768 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8769 hci_assert_advertisement_set_0_ready(); 8770 #endif 8771 hci_run(); 8772 } 8773 8774 /** 8775 * @brief Set Scan Response Data 8776 * @param advertising_data_length 8777 * @param advertising_data (max 31 octets) 8778 * @note data is not copied, pointer has to stay valid 8779 */ 8780 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8781 hci_stack->le_scan_response_data_len = scan_response_data_length; 8782 hci_stack->le_scan_response_data = scan_response_data; 8783 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8784 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8785 hci_assert_advertisement_set_0_ready(); 8786 #endif 8787 hci_run(); 8788 } 8789 8790 /** 8791 * @brief Set Advertisement Parameters 8792 * @param adv_int_min 8793 * @param adv_int_max 8794 * @param adv_type 8795 * @param direct_address_type 8796 * @param direct_address 8797 * @param channel_map 8798 * @param filter_policy 8799 * 8800 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8801 */ 8802 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8803 uint8_t direct_address_typ, bd_addr_t direct_address, 8804 uint8_t channel_map, uint8_t filter_policy) { 8805 8806 hci_stack->le_advertisements_interval_min = adv_int_min; 8807 hci_stack->le_advertisements_interval_max = adv_int_max; 8808 hci_stack->le_advertisements_type = adv_type; 8809 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8810 hci_stack->le_advertisements_channel_map = channel_map; 8811 hci_stack->le_advertisements_filter_policy = filter_policy; 8812 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8813 6); 8814 8815 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8816 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8817 hci_run(); 8818 } 8819 8820 /** 8821 * @brief Enable/Disable Advertisements 8822 * @param enabled 8823 */ 8824 void gap_advertisements_enable(int enabled){ 8825 if (enabled == 0){ 8826 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8827 } else { 8828 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8829 } 8830 hci_update_advertisements_enabled_for_current_roles(); 8831 hci_run(); 8832 } 8833 8834 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8835 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8836 btstack_linked_list_iterator_t it; 8837 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8838 while (btstack_linked_list_iterator_has_next(&it)){ 8839 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8840 if ( item->advertising_handle == advertising_handle ) { 8841 return item; 8842 } 8843 } 8844 return NULL; 8845 } 8846 8847 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8848 hci_stack->le_resolvable_private_address_update_s = update_s; 8849 hci_run(); 8850 return ERROR_CODE_SUCCESS; 8851 } 8852 8853 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8854 // find free advertisement handle. we use LE_EXTENDED_ADVERTISING_LEGACY_HANDLE for non-extended advertising 8855 uint8_t advertisement_handle; 8856 for (advertisement_handle = LE_EXTENDED_ADVERTISING_LEGACY_HANDLE + 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8857 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8858 } 8859 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8860 // clear 8861 memset(storage, 0, sizeof(le_advertising_set_t)); 8862 // copy params 8863 storage->advertising_handle = advertisement_handle; 8864 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8865 // add to list 8866 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8867 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8868 *out_advertising_handle = advertisement_handle; 8869 // set tasks and start 8870 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8871 hci_run(); 8872 return ERROR_CODE_SUCCESS; 8873 } 8874 8875 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8876 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8877 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8878 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8879 // set tasks and start 8880 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8881 hci_run(); 8882 return ERROR_CODE_SUCCESS; 8883 } 8884 8885 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8886 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8887 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8888 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8889 return ERROR_CODE_SUCCESS; 8890 } 8891 8892 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8893 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8894 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8895 memcpy(advertising_set->random_address, random_address, 6); 8896 // set tasks and start 8897 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8898 hci_run(); 8899 return ERROR_CODE_SUCCESS; 8900 } 8901 8902 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8903 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8904 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8905 advertising_set->adv_data = advertising_data; 8906 advertising_set->adv_data_len = advertising_data_length; 8907 // set tasks and start 8908 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8909 hci_run(); 8910 return ERROR_CODE_SUCCESS; 8911 } 8912 8913 uint8_t gap_extended_advertising_set_scan_response_data(uint8_t advertising_handle, uint16_t scan_response_data_length, const uint8_t * scan_response_data){ 8914 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8915 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8916 advertising_set->scan_data = scan_response_data; 8917 advertising_set->scan_data_len = scan_response_data_length; 8918 // set tasks and start 8919 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8920 hci_run(); 8921 return ERROR_CODE_SUCCESS; 8922 } 8923 8924 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8925 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8926 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8927 advertising_set->enable_timeout = timeout; 8928 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8929 // set tasks and start 8930 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8931 hci_run(); 8932 return ERROR_CODE_SUCCESS; 8933 } 8934 8935 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8936 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8937 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8938 // set tasks and start 8939 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8940 hci_run(); 8941 return ERROR_CODE_SUCCESS; 8942 } 8943 8944 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8945 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8946 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8947 // set tasks and start 8948 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8949 hci_run(); 8950 return ERROR_CODE_SUCCESS; 8951 } 8952 8953 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8954 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8955 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8956 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8957 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8958 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8959 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8960 // set tasks and start 8961 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8962 hci_run(); 8963 return ERROR_CODE_SUCCESS; 8964 } 8965 8966 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8967 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8968 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8969 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8970 return ERROR_CODE_SUCCESS; 8971 } 8972 8973 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8974 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8975 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8976 advertising_set->periodic_data = periodic_data; 8977 advertising_set->periodic_data_len = periodic_data_length; 8978 // set tasks and start 8979 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8980 hci_run(); 8981 return ERROR_CODE_SUCCESS; 8982 } 8983 8984 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8985 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8986 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8987 // set tasks and start 8988 advertising_set->periodic_include_adi = include_adi; 8989 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8990 hci_run(); 8991 return ERROR_CODE_SUCCESS; 8992 } 8993 8994 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8995 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8996 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8997 // set tasks and start 8998 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8999 hci_run(); 9000 return ERROR_CODE_SUCCESS; 9001 } 9002 9003 #ifdef ENABLE_LE_CENTRAL 9004 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 9005 hci_stack->le_past_mode = mode; 9006 hci_stack->le_past_skip = skip; 9007 hci_stack->le_past_sync_timeout = sync_timeout; 9008 hci_stack->le_past_cte_type = cte_type; 9009 hci_stack->le_past_set_default_params = true; 9010 hci_run(); 9011 return ERROR_CODE_SUCCESS; 9012 } 9013 9014 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 9015 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9016 if (hci_connection == NULL){ 9017 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9018 } 9019 hci_connection->le_past_sync_handle = sync_handle; 9020 hci_connection->le_past_service_data = service_data; 9021 hci_run(); 9022 return ERROR_CODE_SUCCESS; 9023 } 9024 #endif 9025 9026 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 9027 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9028 if (hci_connection == NULL){ 9029 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9030 } 9031 hci_connection->le_past_advertising_handle = advertising_handle; 9032 hci_connection->le_past_service_data = service_data; 9033 hci_run(); 9034 return ERROR_CODE_SUCCESS; 9035 } 9036 9037 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 9038 9039 #endif 9040 9041 #endif 9042 9043 void hci_le_set_own_address_type(uint8_t own_address_type){ 9044 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 9045 if (own_address_type == hci_stack->le_own_addr_type) return; 9046 hci_stack->le_own_addr_type = own_address_type; 9047 9048 #ifdef ENABLE_LE_PERIPHERAL 9049 // update advertisement parameters, too 9050 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 9051 hci_run(); 9052 #endif 9053 #ifdef ENABLE_LE_CENTRAL 9054 // note: we don't update scan parameters or modify ongoing connection attempts 9055 #endif 9056 } 9057 9058 void hci_le_random_address_set(const bd_addr_t random_address){ 9059 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 9060 memcpy(hci_stack->le_random_address, random_address, 6); 9061 hci_stack->le_random_address_set = true; 9062 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 9063 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9064 if (hci_le_extended_advertising_supported()){ 9065 hci_assert_advertisement_set_0_ready(); 9066 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 9067 } 9068 #endif 9069 hci_run(); 9070 } 9071 9072 #endif 9073 9074 uint8_t gap_disconnect(hci_con_handle_t handle){ 9075 hci_connection_t * conn = hci_connection_for_handle(handle); 9076 if (!conn){ 9077 hci_emit_disconnection_complete(handle, 0); 9078 return 0; 9079 } 9080 uint8_t status = ERROR_CODE_SUCCESS; 9081 switch (conn->state){ 9082 case RECEIVED_DISCONNECTION_COMPLETE: 9083 // ignore if remote just disconnected 9084 break; 9085 case SEND_DISCONNECT: 9086 case SENT_DISCONNECT: 9087 // disconnect already requested or sent 9088 status = ERROR_CODE_COMMAND_DISALLOWED; 9089 break; 9090 default: 9091 // trigger hci_disconnect 9092 conn->state = SEND_DISCONNECT; 9093 hci_run(); 9094 break; 9095 } 9096 return status; 9097 } 9098 9099 int gap_read_rssi(hci_con_handle_t con_handle){ 9100 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9101 if (hci_connection == NULL) return 0; 9102 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 9103 hci_run(); 9104 return 1; 9105 } 9106 9107 /** 9108 * @brief Get connection type 9109 * @param con_handle 9110 * @result connection_type 9111 */ 9112 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 9113 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9114 if (!conn) return GAP_CONNECTION_INVALID; 9115 switch (conn->address_type){ 9116 case BD_ADDR_TYPE_LE_PUBLIC: 9117 case BD_ADDR_TYPE_LE_RANDOM: 9118 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9119 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9120 return GAP_CONNECTION_LE; 9121 case BD_ADDR_TYPE_SCO: 9122 return GAP_CONNECTION_SCO; 9123 case BD_ADDR_TYPE_ACL: 9124 return GAP_CONNECTION_ACL; 9125 default: 9126 return GAP_CONNECTION_INVALID; 9127 } 9128 } 9129 9130 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 9131 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9132 if (!conn) return HCI_ROLE_INVALID; 9133 return (hci_role_t) conn->role; 9134 } 9135 9136 9137 #ifdef ENABLE_CLASSIC 9138 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 9139 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9140 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9141 conn->request_role = role; 9142 hci_run(); 9143 return ERROR_CODE_SUCCESS; 9144 } 9145 #endif 9146 9147 #ifdef ENABLE_BLE 9148 9149 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint16_t phy_options){ 9150 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9151 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9152 9153 conn->le_phy_update_all_phys = all_phys; 9154 conn->le_phy_update_tx_phys = tx_phys; 9155 conn->le_phy_update_rx_phys = rx_phys; 9156 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9157 9158 hci_run(); 9159 9160 return 0; 9161 } 9162 9163 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9164 9165 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9166 // incorrect configuration: 9167 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9168 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9169 btstack_assert(false); 9170 #endif 9171 9172 // check if already in list 9173 btstack_linked_list_iterator_t it; 9174 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9175 while (btstack_linked_list_iterator_has_next(&it)) { 9176 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9177 if (entry->address_type != address_type) { 9178 continue; 9179 } 9180 if (memcmp(entry->address, address, 6) != 0) { 9181 continue; 9182 } 9183 9184 // if already on controller: 9185 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9186 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9187 // drop remove request 9188 entry->state = LE_WHITELIST_ON_CONTROLLER; 9189 return ERROR_CODE_SUCCESS; 9190 } else { 9191 // disallow as already on controller 9192 return ERROR_CODE_COMMAND_DISALLOWED; 9193 } 9194 } 9195 9196 // assume scheduled to add 9197 return ERROR_CODE_COMMAND_DISALLOWED; 9198 } 9199 9200 // alloc and add to list 9201 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9202 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9203 entry->address_type = address_type; 9204 (void)memcpy(entry->address, address, 6); 9205 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9206 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9207 return ERROR_CODE_SUCCESS; 9208 } 9209 9210 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9211 btstack_linked_list_iterator_t it; 9212 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9213 while (btstack_linked_list_iterator_has_next(&it)){ 9214 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9215 if (entry->address_type != address_type) { 9216 continue; 9217 } 9218 if (memcmp(entry->address, address, 6) != 0) { 9219 continue; 9220 } 9221 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9222 // remove from controller if already present 9223 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9224 } else { 9225 // directly remove entry from whitelist 9226 btstack_linked_list_iterator_remove(&it); 9227 btstack_memory_whitelist_entry_free(entry); 9228 } 9229 return ERROR_CODE_SUCCESS; 9230 } 9231 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9232 } 9233 9234 static void hci_whitelist_clear(void){ 9235 btstack_linked_list_iterator_t it; 9236 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9237 while (btstack_linked_list_iterator_has_next(&it)){ 9238 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9239 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9240 // remove from controller if already present 9241 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9242 continue; 9243 } 9244 // directly remove entry from whitelist 9245 btstack_linked_list_iterator_remove(&it); 9246 btstack_memory_whitelist_entry_free(entry); 9247 } 9248 } 9249 9250 /** 9251 * @brief Clear Whitelist 9252 * @return 0 if ok 9253 */ 9254 uint8_t gap_whitelist_clear(void){ 9255 hci_whitelist_clear(); 9256 hci_run(); 9257 return ERROR_CODE_SUCCESS; 9258 } 9259 9260 /** 9261 * @brief Add Device to Whitelist 9262 * @param address_typ 9263 * @param address 9264 * @return 0 if ok 9265 */ 9266 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9267 uint8_t status = hci_whitelist_add(address_type, address); 9268 if (status){ 9269 return status; 9270 } 9271 hci_run(); 9272 return ERROR_CODE_SUCCESS; 9273 } 9274 9275 /** 9276 * @brief Remove Device from Whitelist 9277 * @param address_typ 9278 * @param address 9279 * @return 0 if ok 9280 */ 9281 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9282 uint8_t status = hci_whitelist_remove(address_type, address); 9283 if (status){ 9284 return status; 9285 } 9286 hci_run(); 9287 return ERROR_CODE_SUCCESS; 9288 } 9289 9290 #ifdef ENABLE_LE_CENTRAL 9291 /** 9292 * @brief Connect with Whitelist 9293 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9294 * @return - if ok 9295 */ 9296 uint8_t gap_connect_with_whitelist(void){ 9297 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9298 return ERROR_CODE_COMMAND_DISALLOWED; 9299 } 9300 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9301 hci_run(); 9302 return ERROR_CODE_SUCCESS; 9303 } 9304 9305 /** 9306 * @brief Auto Connection Establishment - Start Connecting to device 9307 * @param address_typ 9308 * @param address 9309 * @return 0 if ok 9310 */ 9311 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9312 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9313 return ERROR_CODE_COMMAND_DISALLOWED; 9314 } 9315 9316 uint8_t status = hci_whitelist_add(address_type, address); 9317 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9318 return status; 9319 } 9320 9321 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9322 9323 hci_run(); 9324 return ERROR_CODE_SUCCESS; 9325 } 9326 9327 /** 9328 * @brief Auto Connection Establishment - Stop Connecting to device 9329 * @param address_typ 9330 * @param address 9331 * @return 0 if ok 9332 */ 9333 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9334 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9335 return ERROR_CODE_COMMAND_DISALLOWED; 9336 } 9337 9338 hci_whitelist_remove(address_type, address); 9339 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9340 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9341 } 9342 hci_run(); 9343 return 0; 9344 } 9345 9346 /** 9347 * @brief Auto Connection Establishment - Stop everything 9348 * @note Convenience function to stop all active auto connection attempts 9349 */ 9350 uint8_t gap_auto_connection_stop_all(void){ 9351 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9352 return ERROR_CODE_COMMAND_DISALLOWED; 9353 } 9354 hci_whitelist_clear(); 9355 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9356 hci_run(); 9357 return ERROR_CODE_SUCCESS; 9358 } 9359 9360 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9361 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9362 if (!conn) return 0; 9363 return conn->le_connection_interval; 9364 } 9365 #endif 9366 #endif 9367 9368 #ifdef ENABLE_CLASSIC 9369 /** 9370 * @brief Set Extended Inquiry Response data 9371 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9372 * @note has to be done before stack starts up 9373 */ 9374 void gap_set_extended_inquiry_response(const uint8_t * data){ 9375 hci_stack->eir_data = data; 9376 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9377 hci_run(); 9378 } 9379 9380 /** 9381 * @brief Start GAP Classic Inquiry 9382 * @param duration in 1.28s units 9383 * @return 0 if ok 9384 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9385 */ 9386 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9387 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9388 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9389 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9390 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9391 } 9392 hci_stack->inquiry_state = duration_in_1280ms_units; 9393 hci_stack->inquiry_max_period_length = 0; 9394 hci_stack->inquiry_min_period_length = 0; 9395 hci_run(); 9396 return 0; 9397 } 9398 9399 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9400 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9401 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9402 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9403 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9404 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9405 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9406 9407 hci_stack->inquiry_state = duration; 9408 hci_stack->inquiry_max_period_length = max_period_length; 9409 hci_stack->inquiry_min_period_length = min_period_length; 9410 hci_run(); 9411 return 0; 9412 } 9413 9414 /** 9415 * @brief Stop GAP Classic Inquiry 9416 * @return 0 if ok 9417 */ 9418 int gap_inquiry_stop(void){ 9419 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9420 // emit inquiry complete event, before it even started 9421 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9422 hci_emit_btstack_event(event, sizeof(event), 1); 9423 return 0; 9424 } 9425 switch (hci_stack->inquiry_state){ 9426 case GAP_INQUIRY_STATE_ACTIVE: 9427 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9428 hci_run(); 9429 return ERROR_CODE_SUCCESS; 9430 case GAP_INQUIRY_STATE_PERIODIC: 9431 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9432 hci_run(); 9433 return ERROR_CODE_SUCCESS; 9434 default: 9435 return ERROR_CODE_COMMAND_DISALLOWED; 9436 } 9437 } 9438 9439 void gap_inquiry_set_lap(uint32_t lap){ 9440 hci_stack->inquiry_lap = lap; 9441 } 9442 9443 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9444 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9445 hci_stack->inquiry_scan_window = inquiry_scan_window; 9446 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9447 hci_run(); 9448 } 9449 9450 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9451 { 9452 hci_stack->inquiry_tx_power_level = tx_power; 9453 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9454 hci_run(); 9455 } 9456 9457 9458 /** 9459 * @brief Remote Name Request 9460 * @param addr 9461 * @param page_scan_repetition_mode 9462 * @param clock_offset only used when bit 15 is set 9463 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9464 */ 9465 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9466 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9467 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9468 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9469 hci_stack->remote_name_clock_offset = clock_offset; 9470 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9471 hci_run(); 9472 return 0; 9473 } 9474 9475 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9476 hci_stack->gap_pairing_state = state; 9477 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9478 hci_run(); 9479 return 0; 9480 } 9481 9482 /** 9483 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9484 * @param addr 9485 * @param pin_data 9486 * @param pin_len 9487 * @return 0 if ok 9488 */ 9489 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9490 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9491 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9492 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9493 hci_stack->gap_pairing_pin_len = pin_len; 9494 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9495 } 9496 9497 /** 9498 * @brief Legacy Pairing Pin Code Response 9499 * @param addr 9500 * @param pin 9501 * @return 0 if ok 9502 */ 9503 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9504 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9505 } 9506 9507 /** 9508 * @brief Abort Legacy Pairing 9509 * @param addr 9510 * @param pin 9511 * @return 0 if ok 9512 */ 9513 int gap_pin_code_negative(bd_addr_t addr){ 9514 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9515 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9516 } 9517 9518 /** 9519 * @brief SSP Passkey Response 9520 * @param addr 9521 * @param passkey 9522 * @return 0 if ok 9523 */ 9524 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9525 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9526 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9527 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9528 } 9529 9530 /** 9531 * @brief Abort SSP Passkey Entry/Pairing 9532 * @param addr 9533 * @param pin 9534 * @return 0 if ok 9535 */ 9536 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9537 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9538 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9539 } 9540 9541 /** 9542 * @brief Accept SSP Numeric Comparison 9543 * @param addr 9544 * @param passkey 9545 * @return 0 if ok 9546 */ 9547 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9548 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9549 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9550 } 9551 9552 /** 9553 * @brief Abort SSP Numeric Comparison/Pairing 9554 * @param addr 9555 * @param pin 9556 * @return 0 if ok 9557 */ 9558 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9559 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9560 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9561 } 9562 9563 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9564 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9565 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9566 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9567 connectionSetAuthenticationFlags(conn, flag); 9568 hci_run(); 9569 return ERROR_CODE_SUCCESS; 9570 } 9571 #endif 9572 9573 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9574 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9575 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9576 } 9577 9578 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9579 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9580 } 9581 #endif 9582 9583 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9584 /** 9585 * @brief Report Remote OOB Data 9586 * @param bd_addr 9587 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9588 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9589 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9590 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9591 */ 9592 uint8_t gap_ssp_remote_oob_data(const bd_addr_t addr, const uint8_t * c_192, const uint8_t * r_192, const uint8_t * c_256, const uint8_t * r_256){ 9593 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9594 if (connection == NULL) { 9595 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9596 } 9597 connection->classic_oob_c_192 = c_192; 9598 connection->classic_oob_r_192 = r_192; 9599 9600 // ignore P-256 if not supported by us 9601 if (hci_stack->secure_connections_active){ 9602 connection->classic_oob_c_256 = c_256; 9603 connection->classic_oob_r_256 = r_256; 9604 } 9605 9606 return ERROR_CODE_SUCCESS; 9607 } 9608 /** 9609 * @brief Generate new OOB data 9610 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9611 */ 9612 void gap_ssp_generate_oob_data(void){ 9613 hci_stack->classic_read_local_oob_data = true; 9614 hci_run(); 9615 } 9616 9617 #endif 9618 9619 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9620 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9621 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9622 if (connection == NULL) { 9623 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9624 } 9625 9626 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9627 connection->link_key_type = type; 9628 9629 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9630 } 9631 9632 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9633 /** 9634 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9635 * @param inquiry_mode see bluetooth_defines.h 9636 */ 9637 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9638 hci_stack->inquiry_mode = inquiry_mode; 9639 } 9640 9641 /** 9642 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9643 */ 9644 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9645 hci_stack->sco_voice_setting = voice_setting; 9646 } 9647 9648 /** 9649 * @brief Get SCO Voice Setting 9650 * @return current voice setting 9651 */ 9652 uint16_t hci_get_sco_voice_setting(void){ 9653 return hci_stack->sco_voice_setting; 9654 } 9655 9656 static int hci_have_usb_transport(void){ 9657 if (!hci_stack->hci_transport) return 0; 9658 const char * transport_name = hci_stack->hci_transport->name; 9659 if (!transport_name) return 0; 9660 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9661 } 9662 9663 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9664 uint16_t sco_packet_length = 0; 9665 9666 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9667 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as many bytes 9668 int multiplier; 9669 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9670 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9671 multiplier = 2; 9672 } else { 9673 multiplier = 1; 9674 } 9675 #endif 9676 9677 #ifdef ENABLE_SCO_OVER_HCI 9678 if (hci_have_usb_transport()){ 9679 // see Core Spec for H2 USB Transfer. 9680 // 3 byte SCO header + 24 bytes per connection 9681 // @note multiple sco connections not supported currently 9682 sco_packet_length = 3 + 24 * multiplier; 9683 } else { 9684 // 3 byte SCO header + SCO packet length over the air 9685 sco_packet_length = 3 + payload_size * multiplier; 9686 // assert that it still fits inside an SCO buffer 9687 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9688 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9689 } 9690 } 9691 #endif 9692 #ifdef HAVE_SCO_TRANSPORT 9693 // 3 byte SCO header + SCO packet length over the air 9694 sco_packet_length = 3 + payload_size * multiplier; 9695 // assert that it still fits inside an SCO buffer 9696 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9697 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9698 } 9699 #endif 9700 return sco_packet_length; 9701 } 9702 9703 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9704 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9705 if (connection != NULL){ 9706 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9707 } 9708 return 0; 9709 } 9710 9711 uint16_t hci_get_sco_packet_length(void){ 9712 btstack_linked_list_iterator_t it; 9713 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9714 while (btstack_linked_list_iterator_has_next(&it)){ 9715 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9716 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9717 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9718 } 9719 } 9720 return 0; 9721 } 9722 9723 /** 9724 * @brief Sets the master/slave policy 9725 * @param policy (0: attempt to become master, 1: let connecting device decide) 9726 */ 9727 void hci_set_master_slave_policy(uint8_t policy){ 9728 hci_stack->master_slave_policy = policy; 9729 } 9730 9731 #endif 9732 9733 HCI_STATE hci_get_state(void){ 9734 return hci_stack->state; 9735 } 9736 9737 #ifdef ENABLE_CLASSIC 9738 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9739 hci_stack->gap_classic_accept_callback = accept_callback; 9740 } 9741 #endif 9742 9743 /** 9744 * @brief Set callback for Bluetooth Hardware Error 9745 */ 9746 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9747 hci_stack->hardware_error_callback = fn; 9748 } 9749 9750 void hci_disconnect_all(void){ 9751 btstack_linked_list_iterator_t it; 9752 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9753 while (btstack_linked_list_iterator_has_next(&it)){ 9754 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9755 if (con->state == SENT_DISCONNECT) continue; 9756 con->state = SEND_DISCONNECT; 9757 } 9758 hci_run(); 9759 } 9760 9761 uint16_t hci_get_manufacturer(void){ 9762 return hci_stack->manufacturer; 9763 } 9764 9765 #ifdef ENABLE_BLE 9766 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9767 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9768 if (!hci_con) return NULL; 9769 return &hci_con->sm_connection; 9770 } 9771 9772 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9773 // without sm.c default values from create_connection_for_bd_addr_and_type() result in non-encrypted, not-authenticated 9774 #endif 9775 9776 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9777 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9778 if (hci_connection == NULL) return 0; 9779 if (hci_is_le_connection(hci_connection)){ 9780 #ifdef ENABLE_BLE 9781 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9782 if (sm_conn->sm_connection_encrypted != 0u) { 9783 return sm_conn->sm_actual_encryption_key_size; 9784 } 9785 #endif 9786 } else { 9787 #ifdef ENABLE_CLASSIC 9788 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9789 return hci_connection->encryption_key_size; 9790 } 9791 #endif 9792 } 9793 return 0; 9794 } 9795 9796 bool gap_authenticated(hci_con_handle_t con_handle){ 9797 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9798 if (hci_connection == NULL) return false; 9799 9800 switch (hci_connection->address_type){ 9801 #ifdef ENABLE_BLE 9802 case BD_ADDR_TYPE_LE_PUBLIC: 9803 case BD_ADDR_TYPE_LE_RANDOM: 9804 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9805 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9806 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9807 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9808 #endif 9809 #ifdef ENABLE_CLASSIC 9810 case BD_ADDR_TYPE_SCO: 9811 case BD_ADDR_TYPE_ACL: 9812 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9813 #endif 9814 default: 9815 return false; 9816 } 9817 } 9818 9819 bool gap_secure_connection(hci_con_handle_t con_handle){ 9820 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9821 if (hci_connection == NULL) return 0; 9822 9823 switch (hci_connection->address_type){ 9824 #ifdef ENABLE_BLE 9825 case BD_ADDR_TYPE_LE_PUBLIC: 9826 case BD_ADDR_TYPE_LE_RANDOM: 9827 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9828 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9829 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9830 return hci_connection->sm_connection.sm_connection_sc; 9831 #endif 9832 #ifdef ENABLE_CLASSIC 9833 case BD_ADDR_TYPE_SCO: 9834 case BD_ADDR_TYPE_ACL: 9835 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9836 #endif 9837 default: 9838 return false; 9839 } 9840 } 9841 9842 bool gap_bonded(hci_con_handle_t con_handle){ 9843 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9844 if (hci_connection == NULL) return 0; 9845 9846 #ifdef ENABLE_CLASSIC 9847 link_key_t link_key; 9848 link_key_type_t link_key_type; 9849 #endif 9850 switch (hci_connection->address_type){ 9851 #ifdef ENABLE_BLE 9852 case BD_ADDR_TYPE_LE_PUBLIC: 9853 case BD_ADDR_TYPE_LE_RANDOM: 9854 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9855 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9856 return hci_connection->sm_connection.sm_le_db_index >= 0; 9857 #endif 9858 #ifdef ENABLE_CLASSIC 9859 case BD_ADDR_TYPE_SCO: 9860 case BD_ADDR_TYPE_ACL: 9861 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9862 #endif 9863 default: 9864 return false; 9865 } 9866 } 9867 9868 #ifdef ENABLE_BLE 9869 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9870 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9871 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9872 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9873 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticated connection cannot be authorized 9874 return sm_conn->sm_connection_authorization_state; 9875 } 9876 #endif 9877 9878 #ifdef ENABLE_CLASSIC 9879 uint8_t gap_sniff_mode_enter(hci_con_handle_t con_handle, uint16_t sniff_min_interval, uint16_t sniff_max_interval, uint16_t sniff_attempt, uint16_t sniff_timeout){ 9880 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9881 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9882 conn->sniff_min_interval = sniff_min_interval; 9883 conn->sniff_max_interval = sniff_max_interval; 9884 conn->sniff_attempt = sniff_attempt; 9885 conn->sniff_timeout = sniff_timeout; 9886 hci_run(); 9887 return 0; 9888 } 9889 9890 /** 9891 * @brief Exit Sniff mode 9892 * @param con_handle 9893 @ @return 0 if ok 9894 */ 9895 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9896 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9897 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9898 conn->sniff_min_interval = 0xffff; 9899 hci_run(); 9900 return 0; 9901 } 9902 9903 uint8_t gap_sniff_subrating_configure(hci_con_handle_t con_handle, uint16_t max_latency, uint16_t min_remote_timeout, uint16_t min_local_timeout){ 9904 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9905 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9906 conn->sniff_subrating_max_latency = max_latency; 9907 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9908 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9909 hci_run(); 9910 return ERROR_CODE_SUCCESS; 9911 } 9912 9913 uint8_t gap_qos_set(hci_con_handle_t con_handle, hci_service_type_t service_type, uint32_t token_rate, uint32_t peak_bandwidth, uint32_t latency, uint32_t delay_variation){ 9914 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9915 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9916 conn->qos_service_type = service_type; 9917 conn->qos_token_rate = token_rate; 9918 conn->qos_peak_bandwidth = peak_bandwidth; 9919 conn->qos_latency = latency; 9920 conn->qos_delay_variation = delay_variation; 9921 hci_run(); 9922 return ERROR_CODE_SUCCESS; 9923 } 9924 9925 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9926 hci_stack->new_page_scan_interval = page_scan_interval; 9927 hci_stack->new_page_scan_window = page_scan_window; 9928 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9929 hci_run(); 9930 } 9931 9932 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9933 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9934 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9935 hci_run(); 9936 } 9937 9938 void gap_set_page_timeout(uint16_t page_timeout){ 9939 hci_stack->page_timeout = page_timeout; 9940 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9941 hci_run(); 9942 } 9943 9944 #endif 9945 9946 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9947 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9948 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9949 if (le_device_db_index >= le_device_db_max_count()) return; 9950 uint8_t offset = le_device_db_index >> 3; 9951 uint8_t mask = 1 << (le_device_db_index & 7); 9952 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9953 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9954 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9955 // note: go back to remove entries, otherwise, a remove + add will skip the add 9956 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9957 } 9958 } 9959 9960 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9961 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9962 if (le_device_db_index >= le_device_db_max_count()) return; 9963 uint8_t offset = le_device_db_index >> 3; 9964 uint8_t mask = 1 << (le_device_db_index & 7); 9965 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9966 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9967 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9968 } 9969 } 9970 9971 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9972 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9973 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9974 } 9975 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9976 // restart le resolving list update 9977 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9978 } 9979 return ERROR_CODE_SUCCESS; 9980 } 9981 9982 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9983 hci_stack->le_privacy_mode = privacy_mode; 9984 } 9985 #endif 9986 9987 #ifdef ENABLE_BLE 9988 #ifdef ENABLE_LE_CENTRAL 9989 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9990 9991 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9992 9993 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9994 // incorrect configuration: 9995 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9996 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9997 btstack_assert(false); 9998 #endif 9999 10000 // check if already in list 10001 btstack_linked_list_iterator_t it; 10002 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 10003 while (btstack_linked_list_iterator_has_next(&it)) { 10004 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 10005 if (entry->sid != advertising_sid) { 10006 continue; 10007 } 10008 if (entry->address_type != address_type) { 10009 continue; 10010 } 10011 if (memcmp(entry->address, address, 6) != 0) { 10012 continue; 10013 } 10014 // disallow if already scheduled to add 10015 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 10016 return ERROR_CODE_COMMAND_DISALLOWED; 10017 } 10018 // still on controller, but scheduled to remove -> re-add 10019 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 10020 return ERROR_CODE_SUCCESS; 10021 } 10022 // alloc and add to list 10023 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 10024 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 10025 entry->sid = advertising_sid; 10026 entry->address_type = address_type; 10027 (void)memcpy(entry->address, address, 6); 10028 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 10029 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 10030 return ERROR_CODE_SUCCESS; 10031 } 10032 10033 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10034 btstack_linked_list_iterator_t it; 10035 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 10036 while (btstack_linked_list_iterator_has_next(&it)){ 10037 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 10038 if (entry->sid != advertising_sid) { 10039 continue; 10040 } 10041 if (entry->address_type != address_type) { 10042 continue; 10043 } 10044 if (memcmp(entry->address, address, 6) != 0) { 10045 continue; 10046 } 10047 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 10048 // remove from controller if already present 10049 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 10050 } else { 10051 // directly remove entry from whitelist 10052 btstack_linked_list_iterator_remove(&it); 10053 btstack_memory_periodic_advertiser_list_entry_free(entry); 10054 } 10055 return ERROR_CODE_SUCCESS; 10056 } 10057 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10058 } 10059 10060 static void hci_periodic_advertiser_list_clear(void){ 10061 btstack_linked_list_iterator_t it; 10062 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 10063 while (btstack_linked_list_iterator_has_next(&it)){ 10064 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 10065 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 10066 // remove from controller if already present 10067 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 10068 continue; 10069 } 10070 // directly remove entry from whitelist 10071 btstack_linked_list_iterator_remove(&it); 10072 btstack_memory_periodic_advertiser_list_entry_free(entry); 10073 } 10074 } 10075 10076 uint8_t gap_periodic_advertiser_list_clear(void){ 10077 hci_periodic_advertiser_list_clear(); 10078 hci_run(); 10079 return ERROR_CODE_SUCCESS; 10080 } 10081 10082 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10083 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 10084 if (status){ 10085 return status; 10086 } 10087 hci_run(); 10088 return ERROR_CODE_SUCCESS; 10089 } 10090 10091 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10092 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 10093 if (status){ 10094 return status; 10095 } 10096 hci_run(); 10097 return ERROR_CODE_SUCCESS; 10098 } 10099 10100 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 10101 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 10102 // abort if already active 10103 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 10104 return ERROR_CODE_COMMAND_DISALLOWED; 10105 } 10106 // store request 10107 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 10108 hci_stack->le_periodic_sync_options = options; 10109 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 10110 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 10111 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 10112 hci_stack->le_periodic_sync_skip = skip; 10113 hci_stack->le_periodic_sync_timeout = sync_timeout; 10114 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 10115 10116 hci_run(); 10117 return ERROR_CODE_SUCCESS; 10118 } 10119 10120 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 10121 // abort if not requested 10122 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 10123 return ERROR_CODE_COMMAND_DISALLOWED; 10124 } 10125 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 10126 hci_run(); 10127 return ERROR_CODE_SUCCESS; 10128 } 10129 10130 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 10131 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 10132 return ERROR_CODE_COMMAND_DISALLOWED; 10133 } 10134 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 10135 hci_run(); 10136 return ERROR_CODE_SUCCESS; 10137 } 10138 10139 #endif 10140 #endif 10141 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 10142 static hci_iso_stream_t * 10143 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 10144 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 10145 if (iso_stream != NULL){ 10146 iso_stream->iso_type = iso_type; 10147 iso_stream->state = state; 10148 iso_stream->group_id = group_id; 10149 iso_stream->stream_id = stream_id; 10150 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 10151 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 10152 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10153 } 10154 return iso_stream; 10155 } 10156 10157 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10158 btstack_linked_list_iterator_t it; 10159 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10160 while (btstack_linked_list_iterator_has_next(&it)){ 10161 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10162 if (iso_stream->cis_handle == con_handle ) { 10163 return iso_stream; 10164 } 10165 } 10166 return NULL; 10167 } 10168 10169 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10170 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10171 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10172 btstack_memory_hci_iso_stream_free(iso_stream); 10173 } 10174 10175 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10176 btstack_linked_list_iterator_t it; 10177 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10178 while (btstack_linked_list_iterator_has_next(&it)){ 10179 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10180 if ((iso_stream->group_id == group_id) && 10181 (iso_stream->iso_type == iso_type)){ 10182 btstack_linked_list_iterator_remove(&it); 10183 btstack_memory_hci_iso_stream_free(iso_stream); 10184 } 10185 } 10186 } 10187 10188 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10189 btstack_linked_list_iterator_t it; 10190 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10191 while (btstack_linked_list_iterator_has_next(&it)){ 10192 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10193 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10194 (iso_stream->group_id == group_id)){ 10195 btstack_linked_list_iterator_remove(&it); 10196 btstack_memory_hci_iso_stream_free(iso_stream); 10197 } 10198 } 10199 } 10200 10201 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10202 UNUSED(big_handle); 10203 10204 btstack_linked_list_iterator_t it; 10205 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10206 while (btstack_linked_list_iterator_has_next(&it)){ 10207 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10208 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10209 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10210 } 10211 } 10212 } 10213 10214 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10215 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10216 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10217 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10218 return (sdu_len_offset + 2 + sdu_len) == size; 10219 } 10220 10221 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10222 if (iso_stream == NULL){ 10223 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10224 return; 10225 } 10226 10227 if (hci_stack->iso_packet_handler == NULL) { 10228 return; 10229 } 10230 10231 // parse header 10232 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10233 uint16_t data_total_length = little_endian_read_16(packet, 2); 10234 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10235 10236 // assert packet is complete 10237 if ((data_total_length + 4u) != size){ 10238 return; 10239 } 10240 10241 if ((pb_flag & 0x01) == 0){ 10242 if (pb_flag == 0x02){ 10243 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10244 if (hci_iso_sdu_complete(packet, size)) { 10245 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10246 } 10247 } else { 10248 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10249 if (size > sizeof(iso_stream->reassembly_buffer)){ 10250 return; 10251 } 10252 memcpy(iso_stream->reassembly_buffer, packet, size); 10253 // fix pb_flag 10254 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10255 iso_stream->reassembly_pos = size; 10256 } 10257 } else { 10258 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10259 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10260 if (ts_flag != 0){ 10261 return; 10262 } 10263 // append fragment 10264 if (iso_stream->reassembly_pos == 0){ 10265 return; 10266 } 10267 10268 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10269 // reset reassembly buffer 10270 iso_stream->reassembly_pos = 0; 10271 return; 10272 } 10273 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10274 iso_stream->reassembly_pos += data_total_length; 10275 10276 // deliver if last fragment and SDU complete 10277 if (pb_flag == 0x03){ 10278 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10279 // fix data_total_length 10280 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10281 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10282 } 10283 // reset reassembly buffer 10284 iso_stream->reassembly_pos = 0; 10285 } 10286 } 10287 } 10288 10289 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10290 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10291 uint16_t pos = 0; 10292 event[pos++] = HCI_EVENT_META_GAP; 10293 event[pos++] = 4 + (2 * big->num_bis); 10294 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10295 event[pos++] = status; 10296 event[pos++] = big->big_handle; 10297 event[pos++] = big->num_bis; 10298 uint8_t i; 10299 for (i=0;i<big->num_bis;i++){ 10300 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10301 pos += 2; 10302 } 10303 hci_emit_btstack_event(event, pos, 0); 10304 } 10305 10306 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10307 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10308 uint16_t pos = 0; 10309 event[pos++] = HCI_EVENT_META_GAP; 10310 event[pos++] = 4 + (2 * cig->num_cis); 10311 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10312 event[pos++] = status; 10313 event[pos++] = cig->cig_id; 10314 event[pos++] = cig->num_cis; 10315 uint8_t i; 10316 for (i=0;i<cig->num_cis;i++){ 10317 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10318 pos += 2; 10319 } 10320 hci_emit_btstack_event(event, pos, 0); 10321 } 10322 10323 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10324 uint16_t pos = 0; 10325 event[pos++] = HCI_EVENT_META_GAP; 10326 event[pos++] = 8; 10327 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10328 event[pos++] = status; 10329 event[pos++] = iso_stream->group_id; 10330 event[pos++] = iso_stream->stream_id; 10331 little_endian_store_16(event, pos, iso_stream->cis_handle); 10332 pos += 2; 10333 little_endian_store_16(event, pos, iso_stream->acl_handle); 10334 pos += 2; 10335 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10336 pos += 2; 10337 event[pos++] = iso_stream->number_of_subevents; 10338 event[pos++] = iso_stream->burst_number_c_to_p; 10339 event[pos++] = iso_stream->burst_number_p_to_c; 10340 event[pos++] = iso_stream->flush_timeout_c_to_p; 10341 event[pos++] = iso_stream->flush_timeout_p_to_c; 10342 return pos; 10343 } 10344 10345 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10346 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10347 // cache data before finalizing struct 10348 uint8_t event [17]; 10349 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10350 btstack_assert(pos <= sizeof(event)); 10351 if (status != ERROR_CODE_SUCCESS){ 10352 hci_iso_stream_finalize(iso_stream); 10353 } 10354 hci_emit_btstack_event(event, pos, 0); 10355 } 10356 10357 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10358 uint8_t event [4]; 10359 uint16_t pos = 0; 10360 event[pos++] = HCI_EVENT_META_GAP; 10361 event[pos++] = 2; 10362 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10363 event[pos++] = big->big_handle; 10364 hci_emit_btstack_event(event, pos, 0); 10365 } 10366 10367 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10368 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10369 uint16_t pos = 0; 10370 event[pos++] = HCI_EVENT_META_GAP; 10371 event[pos++] = 4; 10372 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10373 event[pos++] = status; 10374 event[pos++] = big_sync->big_handle; 10375 event[pos++] = big_sync->num_bis; 10376 uint8_t i; 10377 for (i=0;i<big_sync->num_bis;i++){ 10378 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10379 pos += 2; 10380 } 10381 hci_emit_btstack_event(event, pos, 0); 10382 } 10383 10384 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10385 uint8_t event [4]; 10386 uint16_t pos = 0; 10387 event[pos++] = HCI_EVENT_META_GAP; 10388 event[pos++] = 2; 10389 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10390 event[pos++] = big_handle; 10391 hci_emit_btstack_event(event, pos, 0); 10392 } 10393 10394 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10395 uint8_t event[6]; 10396 uint16_t pos = 0; 10397 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10398 event[pos++] = sizeof(event) - 2; 10399 event[pos++] = big->big_handle; 10400 event[pos++] = bis_index; 10401 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10402 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10403 } 10404 10405 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10406 uint8_t event[4]; 10407 uint16_t pos = 0; 10408 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10409 event[pos++] = sizeof(event) - 2; 10410 little_endian_store_16(event, pos, cis_con_handle); 10411 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10412 } 10413 10414 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10415 btstack_linked_list_iterator_t it; 10416 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10417 while (btstack_linked_list_iterator_has_next(&it)){ 10418 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10419 if ( big->big_handle == big_handle ) { 10420 return big; 10421 } 10422 } 10423 return NULL; 10424 } 10425 10426 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10427 btstack_linked_list_iterator_t it; 10428 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10429 while (btstack_linked_list_iterator_has_next(&it)){ 10430 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10431 if ( big_sync->big_handle == big_handle ) { 10432 return big_sync; 10433 } 10434 } 10435 return NULL; 10436 } 10437 10438 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10439 hci_stack->iso_packets_to_queue = num_packets; 10440 } 10441 10442 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10443 btstack_linked_list_iterator_t it; 10444 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10445 while (btstack_linked_list_iterator_has_next(&it)){ 10446 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10447 if ( cig->cig_id == cig_id ) { 10448 return cig; 10449 } 10450 } 10451 return NULL; 10452 } 10453 10454 static void hci_iso_notify_can_send_now(void){ 10455 10456 // BIG 10457 10458 btstack_linked_list_iterator_t it; 10459 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10460 while (btstack_linked_list_iterator_has_next(&it)){ 10461 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10462 // track number completed packet timestamps 10463 if (big->num_completed_timestamp_current_valid){ 10464 big->num_completed_timestamp_current_valid = false; 10465 if (big->num_completed_timestamp_previous_valid){ 10466 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10467 int32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10468 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10469 big->num_completed_timestamp_previous_ms); 10470 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10471 // to catch up, skip packet on all BIS 10472 uint8_t i; 10473 for (i=0;i<big->num_bis;i++){ 10474 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10475 if (iso_stream){ 10476 iso_stream->num_packets_to_skip++; 10477 } 10478 } 10479 } 10480 } 10481 big->num_completed_timestamp_previous_valid = true; 10482 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10483 } 10484 10485 if (big->can_send_now_requested){ 10486 // check if no outgoing iso packets pending and no can send now have to be emitted 10487 uint8_t i; 10488 bool can_send = true; 10489 uint8_t num_iso_queued_minimum = 0; 10490 for (i=0;i<big->num_bis;i++){ 10491 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10492 if (iso_stream == NULL) continue; 10493 // handle case where individual ISO packet was sent too late: 10494 // for each additionally queued packet, a new one needs to get skipped 10495 if (i==0){ 10496 num_iso_queued_minimum = iso_stream->num_packets_sent; 10497 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10498 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10499 iso_stream->num_packets_to_skip += num_packets_to_skip; 10500 iso_stream->num_packets_sent -= num_packets_to_skip; 10501 } 10502 // check if we can send now 10503 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10504 can_send = false; 10505 break; 10506 } 10507 } 10508 if (can_send){ 10509 // propagate can send now to individual streams 10510 big->can_send_now_requested = false; 10511 for (i=0;i<big->num_bis;i++){ 10512 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10513 iso_stream->emit_ready_to_send = true; 10514 } 10515 } 10516 } 10517 } 10518 10519 if (hci_stack->hci_packet_buffer_reserved) return; 10520 10521 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10522 while (btstack_linked_list_iterator_has_next(&it)){ 10523 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10524 // report bis ready 10525 uint8_t i; 10526 for (i=0;i<big->num_bis;i++){ 10527 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10528 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10529 iso_stream->emit_ready_to_send = false; 10530 hci_emit_bis_can_send_now(big, i); 10531 if (hci_stack->hci_packet_buffer_reserved) return; 10532 } 10533 } 10534 } 10535 10536 10537 // CIS 10538 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10539 while (btstack_linked_list_iterator_has_next(&it)) { 10540 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10541 if ((iso_stream->can_send_now_requested) && 10542 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10543 iso_stream->can_send_now_requested = false; 10544 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10545 if (hci_stack->hci_packet_buffer_reserved) return; 10546 } 10547 } 10548 } 10549 10550 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10551 // make big handle unique and usuable for big and big sync 10552 if (hci_big_for_handle(big_handle) != NULL){ 10553 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10554 } 10555 if (hci_big_sync_for_handle(big_handle) != NULL){ 10556 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10557 } 10558 if (num_bis == 0){ 10559 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10560 } 10561 if (num_bis > MAX_NR_BIS){ 10562 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10563 } 10564 10565 // reserve ISO Streams 10566 uint8_t i; 10567 uint8_t status = ERROR_CODE_SUCCESS; 10568 for (i=0;i<num_bis;i++){ 10569 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10570 if (iso_stream == NULL) { 10571 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10572 break; 10573 } 10574 } 10575 10576 // free structs on error 10577 if (status != ERROR_CODE_SUCCESS){ 10578 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10579 } 10580 10581 return status; 10582 } 10583 10584 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10585 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10586 if (status != ERROR_CODE_SUCCESS){ 10587 return status; 10588 } 10589 10590 le_audio_big_t * big = storage; 10591 big->big_handle = big_params->big_handle; 10592 big->params = big_params; 10593 big->state = LE_AUDIO_BIG_STATE_CREATE; 10594 big->num_bis = big_params->num_bis; 10595 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10596 10597 hci_run(); 10598 10599 return ERROR_CODE_SUCCESS; 10600 } 10601 10602 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10603 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10604 if (status != ERROR_CODE_SUCCESS){ 10605 return status; 10606 } 10607 10608 le_audio_big_sync_t * big_sync = storage; 10609 big_sync->big_handle = big_sync_params->big_handle; 10610 big_sync->params = big_sync_params; 10611 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10612 big_sync->num_bis = big_sync_params->num_bis; 10613 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10614 10615 hci_run(); 10616 10617 return ERROR_CODE_SUCCESS; 10618 } 10619 10620 uint8_t gap_big_terminate(uint8_t big_handle){ 10621 le_audio_big_t * big = hci_big_for_handle(big_handle); 10622 if (big == NULL){ 10623 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10624 } 10625 switch (big->state){ 10626 case LE_AUDIO_BIG_STATE_CREATE: 10627 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10628 hci_emit_big_terminated(big); 10629 break; 10630 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10631 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10632 break; 10633 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10634 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10635 case LE_AUDIO_BIG_STATE_ACTIVE: 10636 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10637 hci_run(); 10638 break; 10639 default: 10640 return ERROR_CODE_COMMAND_DISALLOWED; 10641 } 10642 return ERROR_CODE_SUCCESS; 10643 } 10644 10645 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10646 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10647 if (big_sync == NULL){ 10648 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10649 } 10650 switch (big_sync->state){ 10651 case LE_AUDIO_BIG_STATE_CREATE: 10652 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10653 hci_emit_big_sync_stopped(big_handle); 10654 break; 10655 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10656 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10657 break; 10658 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10659 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10660 case LE_AUDIO_BIG_STATE_ACTIVE: 10661 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10662 hci_run(); 10663 break; 10664 default: 10665 return ERROR_CODE_COMMAND_DISALLOWED; 10666 } 10667 return ERROR_CODE_SUCCESS; 10668 } 10669 10670 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10671 le_audio_big_t * big = hci_big_for_handle(big_handle); 10672 if (big == NULL){ 10673 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10674 } 10675 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10676 return ERROR_CODE_COMMAND_DISALLOWED; 10677 } 10678 big->can_send_now_requested = true; 10679 hci_iso_notify_can_send_now(); 10680 return ERROR_CODE_SUCCESS; 10681 } 10682 10683 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10684 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10685 if (iso_stream == NULL){ 10686 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10687 } 10688 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10689 return ERROR_CODE_COMMAND_DISALLOWED; 10690 } 10691 iso_stream->can_send_now_requested = true; 10692 hci_iso_notify_can_send_now(); 10693 return ERROR_CODE_SUCCESS; 10694 } 10695 10696 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10697 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10698 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10699 } 10700 if (cig_params->num_cis == 0){ 10701 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10702 } 10703 if (cig_params->num_cis > MAX_NR_CIS){ 10704 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10705 } 10706 10707 // reserve ISO Streams 10708 uint8_t i; 10709 uint8_t status = ERROR_CODE_SUCCESS; 10710 for (i=0;i<cig_params->num_cis;i++){ 10711 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10712 if (iso_stream == NULL) { 10713 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10714 break; 10715 } 10716 } 10717 10718 // free structs on error 10719 if (status != ERROR_CODE_SUCCESS){ 10720 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10721 return status; 10722 } 10723 10724 le_audio_cig_t * cig = storage; 10725 cig->cig_id = cig_params->cig_id; 10726 cig->num_cis = cig_params->num_cis; 10727 cig->params = cig_params; 10728 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10729 for (i=0;i<cig->num_cis;i++){ 10730 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10731 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10732 cig->cis_setup_active[i] = false; 10733 cig->cis_established[i] = false; 10734 } 10735 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10736 10737 hci_run(); 10738 10739 return ERROR_CODE_SUCCESS; 10740 } 10741 10742 uint8_t gap_cig_remove(uint8_t cig_id){ 10743 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10744 if (cig == NULL){ 10745 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10746 } 10747 10748 // close active CIS 10749 uint8_t i; 10750 for (i=0;i<cig->num_cis;i++){ 10751 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10752 if (stream != NULL){ 10753 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10754 } 10755 } 10756 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10757 10758 hci_run(); 10759 10760 return ERROR_CODE_SUCCESS; 10761 } 10762 10763 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10764 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10765 if (cig == NULL){ 10766 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10767 } 10768 10769 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10770 return ERROR_CODE_COMMAND_DISALLOWED; 10771 } 10772 10773 // store ACL Connection Handles 10774 uint8_t i; 10775 for (i=0;i<cig->num_cis;i++){ 10776 // check that all con handles exist and store 10777 hci_con_handle_t cis_handle = cis_con_handles[i]; 10778 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10779 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10780 } 10781 uint8_t j; 10782 bool found = false; 10783 for (j=0;j<cig->num_cis;j++){ 10784 if (cig->cis_con_handles[j] == cis_handle){ 10785 cig->acl_con_handles[j] = acl_con_handles[j]; 10786 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10787 btstack_assert(iso_stream != NULL); 10788 iso_stream->acl_handle = acl_con_handles[j]; 10789 found = true; 10790 break; 10791 } 10792 } 10793 if (!found){ 10794 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10795 } 10796 } 10797 10798 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10799 hci_run(); 10800 10801 return ERROR_CODE_SUCCESS; 10802 } 10803 10804 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10805 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10806 if (iso_stream == NULL){ 10807 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10808 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10809 } 10810 10811 // set next state and continue 10812 iso_stream->state = state; 10813 hci_run(); 10814 return ERROR_CODE_SUCCESS; 10815 } 10816 10817 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10818 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10819 } 10820 10821 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10822 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10823 } 10824 10825 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10826 10827 // GAP Privacy - notify clients before random address update 10828 10829 static bool gap_privacy_client_all_ready(void){ 10830 // check if all ready 10831 btstack_linked_list_iterator_t it; 10832 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10833 while (btstack_linked_list_iterator_has_next(&it)) { 10834 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10835 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10836 return false; 10837 } 10838 } 10839 return true; 10840 } 10841 10842 static void gap_privacy_clients_handle_ready(void){ 10843 // clear 'ready' 10844 btstack_linked_list_iterator_t it; 10845 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10846 while (btstack_linked_list_iterator_has_next(&it)) { 10847 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10848 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10849 } 10850 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10851 hci_run(); 10852 } 10853 10854 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10855 btstack_linked_list_iterator_t it; 10856 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10857 while (btstack_linked_list_iterator_has_next(&it)) { 10858 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10859 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10860 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10861 (*client->callback)(client, new_random_address); 10862 } 10863 } 10864 if (gap_privacy_client_all_ready()){ 10865 gap_privacy_clients_handle_ready(); 10866 } 10867 } 10868 10869 void gap_privacy_client_register(gap_privacy_client_t * client){ 10870 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10871 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10872 } 10873 10874 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10875 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10876 if (gap_privacy_client_all_ready()){ 10877 gap_privacy_clients_handle_ready(); 10878 } 10879 } 10880 10881 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10882 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10883 } 10884 10885 #endif /* ENABLE_BLE */ 10886 10887 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10888 void hci_setup_test_connections_fuzz(void){ 10889 hci_connection_t * conn; 10890 10891 // default address: 66:55:44:33:00:01 10892 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10893 10894 // setup Controller info 10895 hci_stack->num_cmd_packets = 255; 10896 hci_stack->acl_packets_total_num = 255; 10897 10898 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10899 addr[5] = 0x01; 10900 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10901 conn->con_handle = addr[5]; 10902 conn->state = RECEIVED_CONNECTION_REQUEST; 10903 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10904 10905 // setup incoming Classic SCO connection with con handle 0x0002 10906 addr[5] = 0x02; 10907 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10908 conn->con_handle = addr[5]; 10909 conn->state = RECEIVED_CONNECTION_REQUEST; 10910 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10911 10912 // setup ready Classic ACL connection with con handle 0x0003 10913 addr[5] = 0x03; 10914 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10915 conn->con_handle = addr[5]; 10916 conn->state = OPEN; 10917 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10918 10919 // setup ready Classic SCO connection with con handle 0x0004 10920 addr[5] = 0x04; 10921 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10922 conn->con_handle = addr[5]; 10923 conn->state = OPEN; 10924 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10925 10926 // setup ready LE ACL connection with con handle 0x005 and public address 10927 addr[5] = 0x05; 10928 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10929 conn->con_handle = addr[5]; 10930 conn->state = OPEN; 10931 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10932 conn->sm_connection.sm_connection_encrypted = 1; 10933 } 10934 10935 void hci_free_connections_fuzz(void){ 10936 btstack_linked_list_iterator_t it; 10937 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10938 while (btstack_linked_list_iterator_has_next(&it)){ 10939 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10940 btstack_linked_list_iterator_remove(&it); 10941 btstack_memory_hci_connection_free(con); 10942 } 10943 } 10944 void hci_simulate_working_fuzz(void){ 10945 hci_stack->le_scanning_param_update = false; 10946 hci_init_done(); 10947 hci_stack->num_cmd_packets = 255; 10948 } 10949 10950 // get hci struct 10951 hci_stack_t * hci_get_stack() { 10952 return hci_stack; 10953 } 10954 10955 #endif 10956