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