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