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