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