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 // Limit baud rate for Broadcom chipsets to 3 mbps 1815 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1816 baud_rate = 3000000; 1817 } 1818 return baud_rate; 1819 } 1820 1821 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1822 UNUSED(ds); 1823 1824 switch (hci_stack->substate){ 1825 case HCI_INIT_W4_SEND_RESET: 1826 log_info("Resend HCI Reset"); 1827 hci_stack->substate = HCI_INIT_SEND_RESET; 1828 hci_stack->num_cmd_packets = 1; 1829 hci_run(); 1830 break; 1831 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1832 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1833 if (hci_stack->hci_transport->reset_link){ 1834 hci_stack->hci_transport->reset_link(); 1835 } 1836 1837 /* fall through */ 1838 1839 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1840 log_info("Resend HCI Reset - CSR Warm Boot"); 1841 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1842 hci_stack->num_cmd_packets = 1; 1843 hci_run(); 1844 break; 1845 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1846 if (hci_stack->hci_transport->set_baudrate){ 1847 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1848 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1849 hci_stack->hci_transport->set_baudrate(baud_rate); 1850 } 1851 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1852 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1853 if (hci_stack->hci_transport->reset_link){ 1854 log_info("Link Reset"); 1855 hci_stack->hci_transport->reset_link(); 1856 } 1857 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1858 hci_run(); 1859 } 1860 break; 1861 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1862 // otherwise continue 1863 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1864 hci_send_cmd(&hci_read_local_supported_commands); 1865 break; 1866 default: 1867 break; 1868 } 1869 } 1870 #endif 1871 1872 static void hci_initializing_next_state(void){ 1873 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1874 } 1875 1876 static void hci_init_done(void){ 1877 // done. tell the app 1878 log_info("hci_init_done -> HCI_STATE_WORKING"); 1879 hci_stack->state = HCI_STATE_WORKING; 1880 hci_emit_state(); 1881 } 1882 1883 // assumption: hci_can_send_command_packet_now() == true 1884 static void hci_initializing_run(void){ 1885 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1886 1887 if (!hci_can_send_command_packet_now()) return; 1888 1889 #ifndef HAVE_HOST_CONTROLLER_API 1890 bool need_baud_change = hci_stack->config 1891 && hci_stack->chipset 1892 && hci_stack->chipset->set_baudrate_command 1893 && hci_stack->hci_transport->set_baudrate 1894 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1895 #endif 1896 1897 switch (hci_stack->substate){ 1898 case HCI_INIT_SEND_RESET: 1899 hci_state_reset(); 1900 1901 #ifndef HAVE_HOST_CONTROLLER_API 1902 // prepare reset if command complete not received in 100ms 1903 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1904 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1905 btstack_run_loop_add_timer(&hci_stack->timeout); 1906 #endif 1907 // send command 1908 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1909 hci_send_cmd(&hci_reset); 1910 break; 1911 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1912 hci_send_cmd(&hci_read_local_version_information); 1913 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1914 break; 1915 1916 #ifndef HAVE_HOST_CONTROLLER_API 1917 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1918 hci_state_reset(); 1919 // prepare reset if command complete not received in 100ms 1920 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1921 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1922 btstack_run_loop_add_timer(&hci_stack->timeout); 1923 // send command 1924 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1925 hci_send_cmd(&hci_reset); 1926 break; 1927 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1928 hci_state_reset(); 1929 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1930 hci_send_cmd(&hci_reset); 1931 break; 1932 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1933 hci_reserve_packet_buffer(); 1934 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1935 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1936 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1937 hci_send_prepared_cmd_packet(); 1938 break; 1939 } 1940 case HCI_INIT_SET_BD_ADDR: 1941 hci_reserve_packet_buffer(); 1942 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1943 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1944 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1945 hci_send_prepared_cmd_packet(); 1946 break; 1947 case HCI_INIT_SEND_READ_LOCAL_NAME: 1948 #ifdef ENABLE_CLASSIC 1949 hci_send_cmd(&hci_read_local_name); 1950 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1951 break; 1952 #endif 1953 /* fall through */ 1954 1955 case HCI_INIT_SEND_BAUD_CHANGE: 1956 if (need_baud_change) { 1957 hci_reserve_packet_buffer(); 1958 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1959 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1960 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1961 hci_send_prepared_cmd_packet(); 1962 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1963 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1964 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1965 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1966 btstack_run_loop_add_timer(&hci_stack->timeout); 1967 } 1968 break; 1969 } 1970 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1971 1972 /* fall through */ 1973 1974 case HCI_INIT_CUSTOM_INIT: 1975 case HCI_INIT_CUSTOM_PRE_INIT: 1976 // Custom initialization 1977 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1978 hci_reserve_packet_buffer(); 1979 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1980 bool send_cmd = false; 1981 switch (hci_stack->chipset_result){ 1982 case BTSTACK_CHIPSET_VALID_COMMAND: 1983 send_cmd = true; 1984 switch (hci_stack->substate){ 1985 case HCI_INIT_CUSTOM_INIT: 1986 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1987 break; 1988 case HCI_INIT_CUSTOM_PRE_INIT: 1989 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1990 break; 1991 default: 1992 btstack_assert(false); 1993 break; 1994 } 1995 break; 1996 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1997 send_cmd = true; 1998 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1999 log_info("CSR Warm Boot"); 2000 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 2001 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2002 btstack_run_loop_add_timer(&hci_stack->timeout); 2003 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 2004 && hci_stack->config 2005 && hci_stack->chipset 2006 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2007 && hci_stack->hci_transport->set_baudrate 2008 && hci_transport_uart_get_main_baud_rate()){ 2009 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2010 } else { 2011 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2012 } 2013 break; 2014 default: 2015 break; 2016 } 2017 2018 if (send_cmd){ 2019 hci_send_prepared_cmd_packet(); 2020 break; 2021 } else { 2022 hci_release_packet_buffer(); 2023 } 2024 log_info("Init script done"); 2025 2026 // Custom Pre-Init complete, start regular init with HCI Reset 2027 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2028 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2029 hci_send_cmd(&hci_reset); 2030 break; 2031 } 2032 2033 // Init script download on Broadcom chipsets causes: 2034 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2035 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2036 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2037 2038 // - baud rate to reset, restore UART baud rate if needed 2039 if (need_baud_change) { 2040 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2041 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2042 hci_stack->hci_transport->set_baudrate(baud_rate); 2043 } 2044 2045 uint16_t bcm_delay_ms = 300; 2046 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2047 // -> Work around: wait here. 2048 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2049 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2050 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2051 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2052 btstack_run_loop_add_timer(&hci_stack->timeout); 2053 break; 2054 } 2055 } 2056 #endif 2057 /* fall through */ 2058 2059 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2060 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2061 hci_send_cmd(&hci_read_local_supported_commands); 2062 break; 2063 case HCI_INIT_READ_BD_ADDR: 2064 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2065 hci_send_cmd(&hci_read_bd_addr); 2066 break; 2067 case HCI_INIT_READ_BUFFER_SIZE: 2068 // only read buffer size if supported 2069 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2070 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2071 hci_send_cmd(&hci_read_buffer_size); 2072 break; 2073 } 2074 2075 /* fall through */ 2076 2077 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2078 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2079 hci_send_cmd(&hci_read_local_supported_features); 2080 break; 2081 2082 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2083 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2084 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2085 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2086 break; 2087 case HCI_INIT_HOST_BUFFER_SIZE: 2088 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2089 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2090 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2091 break; 2092 #endif 2093 2094 case HCI_INIT_SET_EVENT_MASK: 2095 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2096 if (hci_le_supported()){ 2097 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2098 } else { 2099 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2100 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2101 } 2102 break; 2103 2104 case HCI_INIT_SET_EVENT_MASK_2: 2105 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2106 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2107 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2108 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2109 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2110 // Encryption Change Event v2 - bit 25 2111 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2112 break; 2113 } 2114 2115 #ifdef ENABLE_CLASSIC 2116 /* fall through */ 2117 2118 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2119 if (hci_classic_supported() && gap_ssp_supported()){ 2120 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2121 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2122 break; 2123 } 2124 2125 /* fall through */ 2126 2127 case HCI_INIT_WRITE_INQUIRY_MODE: 2128 if (hci_classic_supported()){ 2129 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2130 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2131 break; 2132 } 2133 2134 /* fall through */ 2135 2136 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2137 // skip write secure connections host support if not supported or disabled 2138 if (hci_classic_supported() && hci_stack->secure_connections_enable 2139 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2140 hci_stack->secure_connections_active = true; 2141 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2142 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2143 break; 2144 } 2145 2146 /* fall through */ 2147 2148 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2149 // skip set min encryption key size 2150 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2151 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2152 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2153 break; 2154 } 2155 2156 #ifdef ENABLE_SCO_OVER_HCI 2157 /* fall through */ 2158 2159 // only sent if ENABLE_SCO_OVER_HCI is defined 2160 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2161 // skip write synchronous flow control if not supported 2162 if (hci_classic_supported() 2163 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2164 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2165 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2166 break; 2167 } 2168 /* fall through */ 2169 2170 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2171 // skip write default erroneous data reporting if not supported 2172 if (hci_classic_supported() 2173 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2174 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2175 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2176 break; 2177 } 2178 #endif 2179 2180 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2181 /* fall through */ 2182 2183 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2184 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2185 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2186 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2187 #ifdef ENABLE_SCO_OVER_HCI 2188 log_info("BCM: Route SCO data via HCI transport"); 2189 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2190 #endif 2191 #ifdef ENABLE_SCO_OVER_PCM 2192 log_info("BCM: Route SCO data via PCM interface"); 2193 #ifdef ENABLE_BCM_PCM_WBS 2194 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2195 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2196 #else 2197 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2198 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2199 #endif 2200 #endif 2201 break; 2202 } 2203 #endif 2204 2205 #ifdef ENABLE_SCO_OVER_PCM 2206 /* fall through */ 2207 2208 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2209 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2210 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2211 log_info("BCM: Config PCM interface for I2S"); 2212 #ifdef ENABLE_BCM_PCM_WBS 2213 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2214 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2215 #else 2216 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2217 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2218 #endif 2219 break; 2220 } 2221 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2222 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2223 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2224 log_info("BCM: Config PCM Data format"); 2225 // msb first, fill bits 0, left justified 2226 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2227 break; 2228 } 2229 #ifdef HAVE_BCM_PCM2 2230 case HCI_INIT_BCM_PCM2_SETUP: 2231 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2232 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2233 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2234 uint32_t pcm_clock_freq; 2235 uint8_t ch_0_period; 2236 #ifdef ENABLE_BCM_PCM_WBS 2237 // 512 kHz, resample 8 kHz to 16 khz 2238 pcm_clock_freq = 512000; 2239 ch_0_period = 1; 2240 #else 2241 // 256 khz, 8 khz output 2242 pcm_clock_freq = 256000; 2243 ch_0_period = 0; 2244 #endif 2245 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2246 hci_send_cmd(&hci_bcm_pcm2_setup, 2247 0x00, // Action = Write 2248 0x00, // Test_Options = None 2249 op_mode, // Op_Mode 2250 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2251 pcm_clock_freq, // PCM_Clock_Freq 2252 0x01, // Sync_Signal_Width 2253 0x0F, // Slot_Width 2254 0x01, // NumberOfSlots 2255 0x00, // Bank_0_Fill_Mode = 0s 2256 0x00, // Bank_0_Number_of_Fill_Bits 2257 0x00, // Bank_0_Programmable_Fill_Data 2258 0x00, // Bank_1_Fill_Mode = 0s 2259 0x00, // Bank_1_Number_of_Fill_Bits 2260 0x00, // Bank_1_Programmable_Fill_Data 2261 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2262 0x00, // Ch_0_Slot_Number 2263 0x01, // Ch_1_Slot_Number 2264 0x02, // Ch_2_Slot_Number 2265 0x03, // Ch_3_Slot_Number 2266 0x04, // Ch_4_Slot_Number 2267 ch_0_period, // Ch_0_Period 2268 0x00, // Ch_1_Period 2269 0x00 // Ch_2_Period 2270 ); 2271 break; 2272 } 2273 #endif 2274 #endif /* ENABLE_SCO_OVER_PCM */ 2275 #endif /* ENABLE_CLASSIC */ 2276 2277 #ifdef ENABLE_BLE 2278 /* fall through */ 2279 2280 // LE INIT 2281 case HCI_INIT_LE_READ_BUFFER_SIZE: 2282 if (hci_le_supported()){ 2283 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2284 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2285 hci_send_cmd(&hci_le_read_buffer_size_v2); 2286 } else { 2287 hci_send_cmd(&hci_le_read_buffer_size); 2288 } 2289 break; 2290 } 2291 2292 /* fall through */ 2293 2294 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2295 // skip write le host if not supported (e.g. on LE only EM9301) 2296 if (hci_le_supported() 2297 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2298 // LE Supported Host = 1, Simultaneous Host = 0 2299 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2300 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2301 break; 2302 } 2303 2304 /* fall through */ 2305 2306 case HCI_INIT_LE_SET_EVENT_MASK: 2307 if (hci_le_supported()){ 2308 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2309 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2310 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2311 #else 2312 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2313 #endif 2314 break; 2315 } 2316 #endif 2317 2318 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2319 /* fall through */ 2320 2321 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2322 if (hci_le_supported() 2323 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2324 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2325 hci_send_cmd(&hci_le_read_maximum_data_length); 2326 break; 2327 } 2328 2329 /* fall through */ 2330 2331 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2332 if (hci_le_supported() 2333 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2334 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2335 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2336 break; 2337 } 2338 #endif 2339 2340 #ifdef ENABLE_LE_CENTRAL 2341 /* fall through */ 2342 2343 case HCI_INIT_READ_WHITE_LIST_SIZE: 2344 if (hci_le_supported()){ 2345 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2346 hci_send_cmd(&hci_le_read_white_list_size); 2347 break; 2348 } 2349 2350 #endif 2351 2352 #ifdef ENABLE_LE_PERIPHERAL 2353 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2354 /* fall through */ 2355 2356 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2357 if (hci_le_extended_advertising_supported()){ 2358 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2359 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2360 break; 2361 } 2362 #endif 2363 #endif 2364 /* fall through */ 2365 2366 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2367 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2368 if (hci_le_supported()) { 2369 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2370 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2371 break; 2372 } 2373 #endif 2374 2375 /* fall through */ 2376 2377 case HCI_INIT_DONE: 2378 hci_stack->substate = HCI_INIT_DONE; 2379 // main init sequence complete 2380 #ifdef ENABLE_CLASSIC 2381 // check if initial Classic GAP Tasks are completed 2382 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2383 hci_run_gap_tasks_classic(); 2384 break; 2385 } 2386 #endif 2387 #ifdef ENABLE_BLE 2388 #ifdef ENABLE_LE_CENTRAL 2389 // check if initial LE GAP Tasks are completed 2390 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2391 hci_run_general_gap_le(); 2392 break; 2393 } 2394 #endif 2395 #endif 2396 hci_init_done(); 2397 break; 2398 2399 default: 2400 return; 2401 } 2402 } 2403 2404 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2405 bool command_completed = false; 2406 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2407 uint16_t opcode = little_endian_read_16(packet,3); 2408 if (opcode == hci_stack->last_cmd_opcode){ 2409 command_completed = true; 2410 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2411 } else { 2412 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2413 } 2414 } 2415 2416 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2417 uint8_t status = packet[2]; 2418 uint16_t opcode = little_endian_read_16(packet,4); 2419 if (opcode == hci_stack->last_cmd_opcode){ 2420 if (status){ 2421 command_completed = true; 2422 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2423 } else { 2424 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2425 } 2426 } else { 2427 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2428 } 2429 } 2430 #ifndef HAVE_HOST_CONTROLLER_API 2431 // Vendor == CSR 2432 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2433 // TODO: track actual command 2434 command_completed = true; 2435 } 2436 2437 // Vendor == Toshiba 2438 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2439 // TODO: track actual command 2440 command_completed = true; 2441 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2442 hci_stack->num_cmd_packets = 1; 2443 } 2444 #endif 2445 2446 return command_completed; 2447 } 2448 2449 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2450 2451 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2452 2453 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2454 2455 #ifndef HAVE_HOST_CONTROLLER_API 2456 2457 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2458 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2459 // 2460 // HCI Reset 2461 // Timeout 100 ms 2462 // HCI Reset 2463 // Command Complete Reset 2464 // HCI Read Local Version Information 2465 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2466 // hang... 2467 // 2468 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2469 if (!command_completed 2470 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2471 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2472 2473 uint16_t opcode = little_endian_read_16(packet,3); 2474 if (opcode == hci_reset.opcode){ 2475 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2476 return; 2477 } 2478 } 2479 2480 // CSR & H5 2481 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2482 if (!command_completed 2483 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2484 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2485 2486 uint16_t opcode = little_endian_read_16(packet,3); 2487 if (opcode == hci_reset.opcode){ 2488 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2489 return; 2490 } 2491 } 2492 2493 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2494 // fix: Correct substate and behave as command below 2495 if (command_completed){ 2496 switch (hci_stack->substate){ 2497 case HCI_INIT_SEND_RESET: 2498 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2499 break; 2500 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2501 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2502 break; 2503 default: 2504 break; 2505 } 2506 } 2507 2508 #endif 2509 2510 if (!command_completed) return; 2511 2512 bool need_baud_change = false; 2513 bool need_addr_change = false; 2514 2515 #ifndef HAVE_HOST_CONTROLLER_API 2516 need_baud_change = hci_stack->config 2517 && hci_stack->chipset 2518 && hci_stack->chipset->set_baudrate_command 2519 && hci_stack->hci_transport->set_baudrate 2520 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2521 2522 need_addr_change = hci_stack->custom_bd_addr_set 2523 && hci_stack->chipset 2524 && hci_stack->chipset->set_bd_addr_command; 2525 #endif 2526 2527 switch(hci_stack->substate){ 2528 2529 #ifndef HAVE_HOST_CONTROLLER_API 2530 case HCI_INIT_SEND_RESET: 2531 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2532 // fix: just correct substate and behave as command below 2533 2534 /* fall through */ 2535 #endif 2536 2537 case HCI_INIT_W4_SEND_RESET: 2538 btstack_run_loop_remove_timer(&hci_stack->timeout); 2539 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2540 return; 2541 2542 #ifndef HAVE_HOST_CONTROLLER_API 2543 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2544 // for STLC2500D, baud rate change already happened. 2545 // for others, baud rate gets changed now 2546 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2547 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2548 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2549 hci_stack->hci_transport->set_baudrate(baud_rate); 2550 } 2551 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2552 return; 2553 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2554 btstack_run_loop_remove_timer(&hci_stack->timeout); 2555 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2556 return; 2557 case HCI_INIT_W4_CUSTOM_INIT: 2558 // repeat custom init 2559 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2560 return; 2561 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2562 // repeat custom init 2563 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2564 return; 2565 #endif 2566 2567 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2568 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2569 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2570 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2571 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2572 return; 2573 } 2574 if (need_addr_change){ 2575 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2576 return; 2577 } 2578 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2579 return; 2580 #ifndef HAVE_HOST_CONTROLLER_API 2581 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2582 if (need_baud_change){ 2583 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2584 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2585 hci_stack->hci_transport->set_baudrate(baud_rate); 2586 } 2587 if (need_addr_change){ 2588 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2589 return; 2590 } 2591 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2592 return; 2593 case HCI_INIT_W4_SET_BD_ADDR: 2594 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2595 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2596 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2597 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2598 return; 2599 } 2600 // skipping st warm boot 2601 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2602 return; 2603 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2604 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2605 return; 2606 #endif 2607 2608 case HCI_INIT_DONE: 2609 // set state if we came here by fall through 2610 hci_stack->substate = HCI_INIT_DONE; 2611 return; 2612 2613 default: 2614 break; 2615 } 2616 hci_initializing_next_state(); 2617 } 2618 2619 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2620 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2621 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2622 // check if we have been aware of the HCI connection 2623 switch (conn->state){ 2624 case SENT_CREATE_CONNECTION: 2625 case RECEIVED_CONNECTION_REQUEST: 2626 case ACCEPTED_CONNECTION_REQUEST: 2627 break; 2628 default: 2629 return; 2630 } 2631 2632 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2633 bd_addr_t bd_address; 2634 (void)memcpy(&bd_address, conn->address, 6); 2635 2636 #ifdef ENABLE_CLASSIC 2637 // cache needed data 2638 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2639 #endif 2640 2641 // connection failed, remove entry 2642 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2643 btstack_memory_hci_connection_free( conn ); 2644 2645 #ifdef ENABLE_CLASSIC 2646 // notify client if dedicated bonding 2647 if (notify_dedicated_bonding_failed){ 2648 log_info("hci notify_dedicated_bonding_failed"); 2649 hci_emit_dedicated_bonding_result(bd_address, status); 2650 } 2651 2652 // if authentication error, also delete link key 2653 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2654 gap_drop_link_key_for_bd_addr(bd_address); 2655 } 2656 #else 2657 UNUSED(status); 2658 #endif 2659 } 2660 2661 #ifdef ENABLE_CLASSIC 2662 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2663 // SSP Controller 2664 if (features[6] & (1 << 3)){ 2665 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2666 } 2667 // eSCO 2668 if (features[3] & (1<<7)){ 2669 conn->remote_supported_features[0] |= 1; 2670 } 2671 // Extended features 2672 if (features[7] & (1<<7)){ 2673 conn->remote_supported_features[0] |= 2; 2674 } 2675 // SCO packet types 2676 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2677 } 2678 2679 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2680 // SSP Host 2681 if (features[0] & (1 << 0)){ 2682 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2683 } 2684 // SC Host 2685 if (features[0] & (1 << 3)){ 2686 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2687 } 2688 } 2689 2690 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2691 // SC Controller 2692 if (features[1] & (1 << 0)){ 2693 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2694 } 2695 } 2696 2697 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2698 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2699 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2700 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2701 if (conn->bonding_flags & BONDING_DEDICATED){ 2702 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2703 } 2704 } 2705 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2706 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2707 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2708 } 2709 2710 #endif 2711 2712 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2713 // handle BT initialization 2714 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2715 hci_initializing_event_handler(packet, size); 2716 } 2717 2718 // help with BT sleep 2719 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2720 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2721 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2722 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2723 hci_initializing_next_state(); 2724 } 2725 } 2726 2727 #ifdef ENABLE_CLASSIC 2728 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2729 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2730 conn->requested_security_level = LEVEL_0; 2731 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2732 hci_emit_security_level(conn->con_handle, security_level); 2733 2734 // dedicated bonding 2735 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2736 conn->bonding_flags &= ~BONDING_DEDICATED; 2737 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2738 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2739 // emit dedicated bonding complete, don't disconnect 2740 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2741 #else 2742 // request disconnect, event is emitted after disconnect 2743 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2744 #endif 2745 } 2746 } 2747 2748 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2749 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2750 conn->encryption_key_size = encryption_key_size; 2751 2752 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2753 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2754 hci_handle_mutual_authentication_completed(conn); 2755 } else { 2756 // otherwise trigger remote feature request and send authentication request 2757 hci_trigger_remote_features_for_connection(conn); 2758 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2759 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2760 } 2761 } 2762 } 2763 #endif 2764 2765 static void hci_store_local_supported_commands(const uint8_t * packet){ 2766 // create mapping table 2767 #define X(name, offset, bit) { offset, bit }, 2768 static struct { 2769 uint8_t byte_offset; 2770 uint8_t bit_position; 2771 } supported_hci_commands_map [] = { 2772 SUPPORTED_HCI_COMMANDS 2773 }; 2774 #undef X 2775 2776 // create names for debug purposes 2777 #ifdef ENABLE_LOG_DEBUG 2778 #define X(name, offset, bit) #name, 2779 static const char * command_names[] = { 2780 SUPPORTED_HCI_COMMANDS 2781 }; 2782 #undef X 2783 #endif 2784 2785 hci_stack->local_supported_commands = 0; 2786 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2787 uint16_t i; 2788 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2789 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2790 #ifdef ENABLE_LOG_DEBUG 2791 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); 2792 #else 2793 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2794 #endif 2795 hci_stack->local_supported_commands |= (1LU << i); 2796 } 2797 } 2798 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2799 } 2800 2801 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2802 UNUSED(size); 2803 2804 uint8_t status = 0; 2805 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2806 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2807 } 2808 uint16_t manufacturer; 2809 #ifdef ENABLE_CLASSIC 2810 hci_connection_t * conn; 2811 #endif 2812 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2813 hci_con_handle_t handle; 2814 #endif 2815 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2816 le_audio_cig_t * cig; 2817 #endif 2818 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2819 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2820 #endif 2821 2822 // get num cmd packets - limit to 1 to reduce complexity 2823 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2824 2825 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2826 switch (opcode){ 2827 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2828 if (status) break; 2829 // terminate, name 248 chars 2830 packet[6+248] = 0; 2831 log_info("local name: %s", &packet[6]); 2832 break; 2833 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2834 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2835 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2836 uint16_t acl_len = little_endian_read_16(packet, 6); 2837 uint16_t sco_len = packet[8]; 2838 2839 // determine usable ACL/SCO payload size 2840 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2841 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2842 2843 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2844 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2845 2846 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2847 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2848 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2849 } 2850 break; 2851 case HCI_OPCODE_HCI_READ_RSSI: 2852 if (status == ERROR_CODE_SUCCESS){ 2853 uint8_t event[5]; 2854 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2855 event[1] = 3; 2856 (void)memcpy(&event[2], &packet[6], 3); 2857 hci_emit_btstack_event(event, sizeof(event), 1); 2858 } 2859 break; 2860 #ifdef ENABLE_BLE 2861 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2862 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2863 hci_stack->le_iso_packets_total_num = packet[11]; 2864 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2865 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2866 2867 /* fall through */ 2868 2869 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2870 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2871 hci_stack->le_acl_packets_total_num = packet[8]; 2872 // determine usable ACL payload size 2873 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2874 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2875 } 2876 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); 2877 break; 2878 #endif 2879 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2880 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2881 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2882 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2883 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); 2884 break; 2885 #endif 2886 #ifdef ENABLE_LE_CENTRAL 2887 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2888 hci_stack->le_whitelist_capacity = packet[6]; 2889 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2890 break; 2891 #endif 2892 #ifdef ENABLE_LE_PERIPHERAL 2893 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2894 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2895 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2896 break; 2897 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2898 if (hci_stack->le_advertising_set_in_current_command != 0) { 2899 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2900 hci_stack->le_advertising_set_in_current_command = 0; 2901 if (advertising_set == NULL) break; 2902 uint8_t adv_status = packet[6]; 2903 uint8_t tx_power = packet[7]; 2904 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 }; 2905 if (adv_status == 0){ 2906 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2907 } 2908 hci_emit_btstack_event(event, sizeof(event), 1); 2909 } 2910 break; 2911 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2912 if (hci_stack->le_advertising_set_in_current_command != 0) { 2913 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2914 hci_stack->le_advertising_set_in_current_command = 0; 2915 if (advertising_set == NULL) break; 2916 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2917 if (status == 0){ 2918 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2919 } 2920 hci_emit_btstack_event(event, sizeof(event), 1); 2921 } 2922 break; 2923 #endif 2924 #endif 2925 case HCI_OPCODE_HCI_READ_BD_ADDR: 2926 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2927 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2928 #ifdef ENABLE_CLASSIC 2929 if (hci_stack->link_key_db){ 2930 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2931 } 2932 #endif 2933 break; 2934 #ifdef ENABLE_CLASSIC 2935 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2936 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2937 break; 2938 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2939 if (status == ERROR_CODE_SUCCESS) { 2940 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2941 } else { 2942 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2943 } 2944 break; 2945 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2946 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2947 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2948 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2949 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2950 hci_emit_btstack_event(event, sizeof(event), 1); 2951 } 2952 break; 2953 #endif 2954 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2955 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2956 2957 #ifdef ENABLE_CLASSIC 2958 // determine usable ACL packet types based on host buffer size and supported features 2959 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]); 2960 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2961 // determine usable SCO packet types based on supported features 2962 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2963 &hci_stack->local_supported_features[0]); 2964 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2965 #endif 2966 // Classic/LE 2967 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2968 break; 2969 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2970 manufacturer = little_endian_read_16(packet, 10); 2971 // map Cypress & Infineon to Broadcom 2972 switch (manufacturer){ 2973 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2974 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2975 log_info("Treat Cypress/Infineon as Broadcom"); 2976 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2977 little_endian_store_16(packet, 10, manufacturer); 2978 break; 2979 default: 2980 break; 2981 } 2982 hci_stack->manufacturer = manufacturer; 2983 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2984 break; 2985 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2986 hci_store_local_supported_commands(packet); 2987 break; 2988 #ifdef ENABLE_CLASSIC 2989 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2990 if (status) return; 2991 hci_stack->synchronous_flow_control_enabled = 1; 2992 break; 2993 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2994 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2995 conn = hci_connection_for_handle(handle); 2996 if (conn != NULL) { 2997 uint8_t key_size = 0; 2998 if (status == 0){ 2999 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 3000 log_info("Handle %04x key Size: %u", handle, key_size); 3001 } else { 3002 key_size = 1; 3003 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3004 } 3005 hci_handle_read_encryption_key_size_complete(conn, key_size); 3006 } 3007 break; 3008 // assert pairing complete event is emitted. 3009 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3010 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3011 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3012 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3013 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3014 // lookup connection by gap pairing addr 3015 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3016 if (conn == NULL) break; 3017 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3018 break; 3019 3020 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3021 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3022 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3023 uint8_t event[67]; 3024 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3025 event[1] = 65; 3026 (void)memset(&event[2], 0, 65); 3027 if (status == ERROR_CODE_SUCCESS){ 3028 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3029 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3030 event[2] = 3; 3031 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3032 } else { 3033 event[2] = 1; 3034 } 3035 } 3036 hci_emit_btstack_event(event, sizeof(event), 0); 3037 break; 3038 } 3039 3040 // note: only needed if user does not provide OOB data 3041 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3042 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3043 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3044 if (conn == NULL) break; 3045 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3046 break; 3047 #endif 3048 #endif 3049 #ifdef ENABLE_BLE 3050 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3051 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3052 // lookup CIG 3053 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3054 if (cig != NULL){ 3055 uint8_t i = 0; 3056 if (status == ERROR_CODE_SUCCESS){ 3057 // assign CIS handles to pre-allocated CIS 3058 btstack_linked_list_iterator_t it; 3059 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3060 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3061 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3062 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3063 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3064 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3065 iso_stream->cis_handle = cis_handle; 3066 cig->cis_con_handles[i] = cis_handle; 3067 i++; 3068 } 3069 } 3070 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3071 hci_emit_cig_created(cig, status); 3072 } else { 3073 hci_emit_cig_created(cig, status); 3074 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3075 } 3076 } 3077 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3078 break; 3079 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3080 if (status != ERROR_CODE_SUCCESS){ 3081 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3082 } 3083 break; 3084 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3085 if (status != ERROR_CODE_SUCCESS){ 3086 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3087 } 3088 break; 3089 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3090 // lookup BIG by state 3091 btstack_linked_list_iterator_t it; 3092 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3093 while (btstack_linked_list_iterator_has_next(&it)) { 3094 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3095 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3096 if (status == ERROR_CODE_SUCCESS){ 3097 big->state_vars.next_bis++; 3098 if (big->state_vars.next_bis == big->num_bis){ 3099 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3100 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3101 } else { 3102 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3103 } 3104 } else { 3105 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3106 big->state_vars.status = status; 3107 } 3108 return; 3109 } 3110 } 3111 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3112 while (btstack_linked_list_iterator_has_next(&it)) { 3113 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3114 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3115 if (status == ERROR_CODE_SUCCESS){ 3116 big_sync->state_vars.next_bis++; 3117 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3118 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3119 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3120 } else { 3121 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3122 } 3123 } else { 3124 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3125 big_sync->state_vars.status = status; 3126 } 3127 return; 3128 } 3129 } 3130 // Lookup CIS via active group operation 3131 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3132 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3133 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3134 3135 // lookup CIS by state 3136 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3137 while (btstack_linked_list_iterator_has_next(&it)){ 3138 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3139 handle = iso_stream->cis_handle; 3140 bool emit_cis_created = false; 3141 switch (iso_stream->state){ 3142 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3143 if (status != ERROR_CODE_SUCCESS){ 3144 emit_cis_created = true; 3145 break; 3146 } 3147 if (iso_stream->max_sdu_c_to_p > 0){ 3148 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3149 } else { 3150 emit_cis_created = true; 3151 } 3152 break; 3153 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3154 emit_cis_created = true; 3155 break; 3156 default: 3157 break; 3158 } 3159 if (emit_cis_created){ 3160 hci_cis_handle_created(iso_stream, status); 3161 } 3162 } 3163 } else { 3164 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3165 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3166 if (cig != NULL) { 3167 // emit cis created if all ISO Paths have been created 3168 // assume we are central 3169 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3170 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3171 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3172 // if outgoing has been setup, or incoming was setup but outgoing not required 3173 if ((cis_direction == 1) || (outgoing_needed == false)){ 3174 // lookup iso stream by cig/cis 3175 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3176 while (btstack_linked_list_iterator_has_next(&it)) { 3177 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3178 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3179 hci_cis_handle_created(iso_stream, status); 3180 } 3181 } 3182 } 3183 // next state 3184 cig->state_vars.next_cis++; 3185 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3186 } 3187 } 3188 } 3189 break; 3190 } 3191 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3192 // lookup BIG by state 3193 btstack_linked_list_iterator_t it; 3194 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3195 while (btstack_linked_list_iterator_has_next(&it)) { 3196 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3197 uint8_t big_handle = big_sync->big_handle; 3198 switch (big_sync->state){ 3199 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3200 btstack_linked_list_iterator_remove(&it); 3201 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3202 return; 3203 default: 3204 btstack_linked_list_iterator_remove(&it); 3205 hci_emit_big_sync_stopped(big_handle); 3206 return; 3207 } 3208 } 3209 break; 3210 } 3211 #endif 3212 #endif 3213 default: 3214 break; 3215 } 3216 } 3217 3218 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3219 static void 3220 hci_iso_create_big_failed(const le_audio_big_t *big, uint8_t status) { 3221 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 3222 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3223 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 3224 hci_emit_big_created(big, status); 3225 } else { 3226 hci_emit_big_terminated(big); 3227 } 3228 } 3229 3230 static void hci_iso_big_sync_failed(const le_audio_big_sync_t *big_sync, uint8_t status) { 3231 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3232 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3233 hci_emit_big_sync_created(big_sync, status); 3234 } else { 3235 hci_emit_big_sync_stopped(big_sync->big_handle); 3236 } 3237 } 3238 #endif 3239 3240 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3241 UNUSED(size); 3242 3243 // get num cmd packets - limit to 1 to reduce complexity 3244 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3245 3246 // get opcode and command status 3247 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3248 3249 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3250 uint8_t status = hci_event_command_status_get_status(packet); 3251 #endif 3252 3253 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3254 bd_addr_type_t addr_type; 3255 bd_addr_t addr; 3256 #endif 3257 3258 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3259 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3260 #endif 3261 3262 switch (opcode){ 3263 #ifdef ENABLE_CLASSIC 3264 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3265 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3266 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3267 #endif 3268 #ifdef ENABLE_LE_CENTRAL 3269 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3270 #endif 3271 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3272 addr_type = hci_stack->outgoing_addr_type; 3273 memcpy(addr, hci_stack->outgoing_addr, 6); 3274 3275 // reset outgoing address info 3276 memset(hci_stack->outgoing_addr, 0, 6); 3277 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3278 3279 // on error 3280 if (status != ERROR_CODE_SUCCESS){ 3281 #ifdef ENABLE_LE_CENTRAL 3282 if (hci_is_le_connection_type(addr_type)){ 3283 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3284 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3285 } 3286 #endif 3287 // error => outgoing connection failed 3288 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3289 if (conn != NULL){ 3290 hci_handle_connection_failed(conn, status); 3291 } 3292 } 3293 break; 3294 #endif 3295 #ifdef ENABLE_CLASSIC 3296 case HCI_OPCODE_HCI_INQUIRY: 3297 if (status == ERROR_CODE_SUCCESS) { 3298 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3299 } else { 3300 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3301 } 3302 break; 3303 #endif 3304 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3305 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3306 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3307 if (status == ERROR_CODE_SUCCESS){ 3308 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3309 } else { 3310 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3311 } 3312 break; 3313 case HCI_OPCODE_HCI_LE_CREATE_BIG: 3314 if (status != ERROR_CODE_SUCCESS){ 3315 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3316 // get current big 3317 le_audio_big_t * big = hci_big_for_handle(hci_stack->iso_active_operation_group_id); 3318 if (big != NULL){ 3319 hci_iso_create_big_failed(big, status); 3320 } 3321 } 3322 break; 3323 case HCI_OPCODE_HCI_LE_BIG_CREATE_SYNC: 3324 if (status != ERROR_CODE_SUCCESS){ 3325 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3326 // get current big sync 3327 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(hci_stack->iso_active_operation_group_id); 3328 if (big_sync != NULL){ 3329 hci_iso_big_sync_failed(big_sync, status); 3330 } 3331 } 3332 break; 3333 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3334 default: 3335 break; 3336 } 3337 } 3338 3339 #ifdef ENABLE_BLE 3340 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3341 gap_event[0] = HCI_EVENT_META_GAP; 3342 gap_event[1] = 36 - 2; 3343 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3344 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3345 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3346 memcpy(&gap_event[3], &hci_event[3], 11); 3347 memset(&gap_event[14], 0, 12); 3348 memcpy(&gap_event[26], &hci_event[14], 7); 3349 memset(&gap_event[33], 0xff, 3); 3350 break; 3351 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3352 memcpy(&gap_event[3], &hci_event[3], 30); 3353 memset(&gap_event[33], 0xff, 3); 3354 break; 3355 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3356 memcpy(&gap_event[3], &hci_event[3], 33); 3357 break; 3358 default: 3359 btstack_unreachable(); 3360 break; 3361 } 3362 } 3363 3364 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3365 bd_addr_t addr; 3366 bd_addr_type_t addr_type; 3367 hci_connection_t * conn; 3368 3369 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3370 uint8_t gap_event[36]; 3371 hci_create_gap_connection_complete_event(hci_event, gap_event); 3372 3373 // read fields 3374 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3375 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3376 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3377 3378 // Connection management 3379 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3380 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3381 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3382 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3383 3384 #ifdef ENABLE_LE_CENTRAL 3385 // handle error: error is reported only to the initiator -> outgoing connection 3386 if (status){ 3387 3388 // handle cancelled outgoing connection 3389 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3390 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3391 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3392 bool connection_was_cancelled = false; 3393 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3394 connection_was_cancelled = true; 3395 // reset state 3396 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3397 // get outgoing connection conn struct for direct connect 3398 conn = gap_get_outgoing_le_connection(); 3399 // prepare restart if still active 3400 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3401 conn->state = SEND_CREATE_CONNECTION; 3402 } 3403 } 3404 3405 // free connection if cancelled by user (request == IDLE) 3406 bool cancelled_by_user = hci_stack->le_connecting_request == LE_CONNECTING_IDLE; 3407 if ((conn != NULL) && cancelled_by_user){ 3408 // remove entry 3409 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3410 btstack_memory_hci_connection_free( conn ); 3411 } 3412 3413 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE for: 3414 // - outgoing error not caused by connection cancel 3415 // - connection cancelled by user 3416 // by this, no event is emitted for intermediate connection cancel required filterlist modification 3417 if ((connection_was_cancelled == false) || cancelled_by_user){ 3418 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3419 } 3420 return; 3421 } 3422 #endif 3423 3424 // on success, both hosts receive connection complete event 3425 if (role == HCI_ROLE_MASTER){ 3426 #ifdef ENABLE_LE_CENTRAL 3427 // if we're master, it was an outgoing connection 3428 // note: no hci_connection_t object exists yet for connect with whitelist 3429 3430 // if a identity addresses was used without enhanced connection complete event, 3431 // the connection complete event contains the current random address of the peer device. 3432 // This random address is needed in the case of a re-pairing 3433 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3434 conn = gap_get_outgoing_le_connection(); 3435 // if outgoing connection object is available, check if identity address was used. 3436 // if yes, track resolved random address and provide rpa 3437 // note: we don't update hci le subevent connection complete 3438 if (conn != NULL){ 3439 if (hci_is_le_identity_address_type(conn->address_type)){ 3440 memcpy(&gap_event[20], &gap_event[8], 6); 3441 gap_event[7] = conn->address_type; 3442 reverse_bd_addr(conn->address, &gap_event[8]); 3443 } 3444 } 3445 } 3446 3447 // we're done with it 3448 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3449 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3450 #endif 3451 } else { 3452 #ifdef ENABLE_LE_PERIPHERAL 3453 // if we're slave, it was an incoming connection, advertisements have stopped 3454 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3455 #endif 3456 } 3457 3458 // LE connections are auto-accepted, so just create a connection if there isn't one already 3459 if (!conn){ 3460 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3461 } 3462 3463 // no memory, sorry. 3464 if (!conn){ 3465 return; 3466 } 3467 3468 conn->state = OPEN; 3469 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3470 conn->le_connection_interval = conn_interval; 3471 3472 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3473 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3474 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES)){ 3475 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3476 } 3477 #endif 3478 3479 #ifdef ENABLE_LE_PERIPHERAL 3480 if (role == HCI_ROLE_SLAVE){ 3481 hci_update_advertisements_enabled_for_current_roles(); 3482 } 3483 #endif 3484 3485 // init unenhanced att bearer mtu 3486 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3487 conn->att_connection.mtu_exchanged = false; 3488 3489 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3490 3491 // restart timer 3492 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3493 // btstack_run_loop_add_timer(&conn->timeout); 3494 3495 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3496 3497 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3498 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3499 3500 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3501 hci_emit_nr_connections_changed(); 3502 } 3503 #endif 3504 3505 #ifdef ENABLE_CLASSIC 3506 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){ 3507 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3508 // LEVEL_4 is tested by l2cap 3509 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3510 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3511 if (level >= LEVEL_3){ 3512 // MITM not possible without keyboard or display 3513 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3514 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3515 3516 // MITM possible if one side has keyboard and the other has keyboard or display 3517 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3518 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3519 3520 // MITM not possible if one side has only display and other side has no keyboard 3521 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3522 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3523 } 3524 // LEVEL 2 requires SSP, which is a given 3525 return true; 3526 } 3527 3528 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3529 // get requested security level 3530 gap_security_level_t requested_security_level = conn->requested_security_level; 3531 if (hci_stack->gap_secure_connections_only_mode){ 3532 requested_security_level = LEVEL_4; 3533 } 3534 3535 // assess security: LEVEL 4 requires SC 3536 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3537 if ((requested_security_level == LEVEL_4) && 3538 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3539 !hci_remote_sc_enabled(conn)){ 3540 log_info("Level 4 required, but SC not supported -> abort"); 3541 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3542 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3543 return; 3544 } 3545 3546 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3547 // - GAP/MOD/NBON/BV-02-C 3548 // - GAP/DM/NBON/BV-01-C 3549 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3550 switch (conn->io_cap_response_auth_req){ 3551 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3552 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3553 if (hci_stack->bondable == false){ 3554 log_info("Dedicated vs. non-bondable -> abort"); 3555 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3556 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3557 return; 3558 } 3559 default: 3560 break; 3561 } 3562 } 3563 3564 // assess security based on io capabilities 3565 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3566 // responder: fully validate io caps of both sides as well as OOB data 3567 bool security_possible = false; 3568 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3569 3570 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3571 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3572 // so we merge the OOB data availability 3573 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3574 if (conn->classic_oob_c_192 != NULL){ 3575 have_oob_data |= 1; 3576 } 3577 if (conn->classic_oob_c_256 != NULL){ 3578 have_oob_data |= 2; 3579 } 3580 // for up to Level 3, either P-192 as well as P-256 will do 3581 // 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 3582 // if remote does not SC, we should not receive P-256 data either 3583 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3584 security_possible = true; 3585 } 3586 // for Level 4, P-256 is needed 3587 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3588 security_possible = true; 3589 } 3590 #endif 3591 3592 if (security_possible == false){ 3593 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3594 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3595 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3596 return; 3597 } 3598 } else { 3599 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3600 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3601 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3602 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3603 log_info("Level 3+ required, but no input/output -> abort"); 3604 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3605 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3606 return; 3607 } 3608 #endif 3609 #endif 3610 } 3611 3612 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3613 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3614 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3615 } else { 3616 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3617 } 3618 #endif 3619 } 3620 3621 #endif 3622 3623 static void event_handler(uint8_t *packet, uint16_t size){ 3624 3625 uint16_t event_length = packet[1]; 3626 3627 // assert packet is complete 3628 if (size != (event_length + 2u)){ 3629 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3630 return; 3631 } 3632 3633 hci_con_handle_t handle; 3634 hci_connection_t * conn; 3635 int i; 3636 3637 #ifdef ENABLE_CLASSIC 3638 hci_link_type_t link_type; 3639 bd_addr_t addr; 3640 bd_addr_type_t addr_type; 3641 #endif 3642 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3643 hci_iso_stream_t * iso_stream; 3644 le_audio_big_t * big; 3645 le_audio_big_sync_t * big_sync; 3646 #endif 3647 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3648 btstack_linked_list_iterator_t it; 3649 #endif 3650 #if defined(ENABLE_LE_EXTENDED_ADVERTISING) && defined(ENABLE_LE_CENTRAL) 3651 uint8_t advertising_handle; 3652 #endif 3653 3654 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3655 3656 switch (hci_event_packet_get_type(packet)) { 3657 3658 case HCI_EVENT_COMMAND_COMPLETE: 3659 handle_command_complete_event(packet, size); 3660 break; 3661 3662 case HCI_EVENT_COMMAND_STATUS: 3663 handle_command_status_event(packet, size); 3664 break; 3665 3666 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3667 if (size < 3) return; 3668 uint16_t num_handles = packet[2]; 3669 if (size != (3u + num_handles * 4u)) return; 3670 #ifdef ENABLE_CLASSIC 3671 bool notify_sco = false; 3672 #endif 3673 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3674 bool notify_iso = false; 3675 #endif 3676 uint16_t offset = 3; 3677 for (i=0; i<num_handles;i++){ 3678 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3679 offset += 2u; 3680 uint16_t num_packets = little_endian_read_16(packet, offset); 3681 offset += 2u; 3682 3683 conn = hci_connection_for_handle(handle); 3684 if (conn != NULL) { 3685 3686 if (conn->num_packets_sent >= num_packets) { 3687 conn->num_packets_sent -= num_packets; 3688 } else { 3689 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3690 conn->num_packets_sent = 0; 3691 } 3692 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3693 #ifdef ENABLE_CLASSIC 3694 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3695 notify_sco = true; 3696 } 3697 #endif 3698 } 3699 3700 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3701 hci_controller_dump_packets(); 3702 #endif 3703 3704 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3705 if (conn == NULL){ 3706 iso_stream = hci_iso_stream_for_con_handle(handle); 3707 if (iso_stream != NULL){ 3708 if (iso_stream->num_packets_sent >= num_packets) { 3709 iso_stream->num_packets_sent -= num_packets; 3710 } else { 3711 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3712 iso_stream->num_packets_sent = 0; 3713 } 3714 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3715 big = hci_big_for_handle(iso_stream->group_id); 3716 if (big != NULL){ 3717 big->num_completed_timestamp_current_valid = true; 3718 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3719 } 3720 } 3721 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3722 num_packets, handle, iso_stream->num_packets_sent); 3723 notify_iso = true; 3724 } 3725 } 3726 #endif 3727 } 3728 3729 #ifdef ENABLE_CLASSIC 3730 if (notify_sco){ 3731 hci_notify_if_sco_can_send_now(); 3732 } 3733 #endif 3734 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3735 if (notify_iso){ 3736 hci_iso_notify_can_send_now(); 3737 } 3738 #endif 3739 break; 3740 } 3741 3742 #ifdef ENABLE_CLASSIC 3743 case HCI_EVENT_FLUSH_OCCURRED: 3744 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3745 handle = hci_event_flush_occurred_get_handle(packet); 3746 conn = hci_connection_for_handle(handle); 3747 if (conn) { 3748 log_info("Flush occurred, disconnect 0x%04x", handle); 3749 conn->state = SEND_DISCONNECT; 3750 } 3751 break; 3752 3753 case HCI_EVENT_INQUIRY_COMPLETE: 3754 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3755 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3756 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3757 hci_emit_btstack_event(event, sizeof(event), 1); 3758 } 3759 break; 3760 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3761 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3762 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3763 } 3764 break; 3765 case HCI_EVENT_CONNECTION_REQUEST: 3766 reverse_bd_addr(&packet[2], addr); 3767 link_type = (hci_link_type_t) packet[11]; 3768 3769 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3770 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3771 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3772 bd_addr_copy(hci_stack->decline_addr, addr); 3773 break; 3774 } 3775 3776 if (hci_stack->gap_classic_accept_callback != NULL){ 3777 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3778 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3779 bd_addr_copy(hci_stack->decline_addr, addr); 3780 break; 3781 } 3782 } 3783 3784 // TODO: eval COD 8-10 3785 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3786 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3787 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3788 if (!conn) { 3789 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3790 } 3791 if (!conn) { 3792 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3793 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3794 bd_addr_copy(hci_stack->decline_addr, addr); 3795 hci_run(); 3796 // avoid event to higher layer 3797 return; 3798 } 3799 conn->state = RECEIVED_CONNECTION_REQUEST; 3800 // store info about eSCO 3801 if (link_type == HCI_LINK_TYPE_ESCO){ 3802 conn->remote_supported_features[0] |= 1; 3803 } 3804 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3805 if (addr_type == BD_ADDR_TYPE_SCO){ 3806 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3807 // ACL exists unless fuzzing 3808 if (acl_conn != NULL) { 3809 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3810 } 3811 } 3812 hci_run(); 3813 break; 3814 3815 case HCI_EVENT_CONNECTION_COMPLETE: 3816 // Connection management 3817 reverse_bd_addr(&packet[5], addr); 3818 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3819 addr_type = BD_ADDR_TYPE_ACL; 3820 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3821 if (conn) { 3822 switch (conn->state){ 3823 // expected states 3824 case ACCEPTED_CONNECTION_REQUEST: 3825 case SENT_CREATE_CONNECTION: 3826 break; 3827 // unexpected state -> ignore 3828 default: 3829 // don't forward event to app 3830 return; 3831 } 3832 if (!packet[2]){ 3833 conn->state = OPEN; 3834 conn->con_handle = little_endian_read_16(packet, 3); 3835 3836 // trigger write supervision timeout if we're master 3837 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3838 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3839 } 3840 3841 // trigger write automatic flush timeout 3842 if (hci_stack->automatic_flush_timeout != 0){ 3843 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3844 } 3845 3846 // restart timer 3847 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3848 btstack_run_loop_add_timer(&conn->timeout); 3849 3850 // trigger remote features for dedicated bonding 3851 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3852 hci_trigger_remote_features_for_connection(conn); 3853 } 3854 3855 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3856 3857 hci_emit_nr_connections_changed(); 3858 } else { 3859 // connection failed 3860 hci_handle_connection_failed(conn, packet[2]); 3861 } 3862 } 3863 break; 3864 3865 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3866 reverse_bd_addr(&packet[5], addr); 3867 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3868 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3869 3870 // SCO exists unless fuzzer 3871 if (conn == NULL) break; 3872 3873 if (packet[2] != ERROR_CODE_SUCCESS){ 3874 // connection failed, remove entry 3875 hci_handle_connection_failed(conn, packet[2]); 3876 break; 3877 } 3878 3879 conn->state = OPEN; 3880 conn->con_handle = little_endian_read_16(packet, 3); 3881 3882 // update sco payload length for eSCO connections 3883 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3884 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3885 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3886 } 3887 3888 #ifdef ENABLE_SCO_OVER_HCI 3889 // update SCO 3890 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3891 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3892 } 3893 // trigger can send now 3894 if (hci_have_usb_transport()){ 3895 hci_stack->sco_can_send_now = true; 3896 } 3897 3898 // setup implict sco flow control 3899 conn->sco_tx_ready = 0; 3900 conn->sco_tx_active = 0; 3901 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3902 3903 #endif 3904 #ifdef HAVE_SCO_TRANSPORT 3905 // configure sco transport 3906 if (hci_stack->sco_transport != NULL){ 3907 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3908 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3909 } 3910 #endif 3911 break; 3912 3913 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3914 handle = little_endian_read_16(packet, 3); 3915 conn = hci_connection_for_handle(handle); 3916 if (!conn) break; 3917 if (!packet[2]){ 3918 const uint8_t * features = &packet[5]; 3919 hci_handle_remote_features_page_0(conn, features); 3920 3921 // read extended features if possible 3922 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3923 && ((conn->remote_supported_features[0] & 2) != 0)) { 3924 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3925 break; 3926 } 3927 } 3928 hci_handle_remote_features_received(conn); 3929 break; 3930 3931 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3932 handle = little_endian_read_16(packet, 3); 3933 conn = hci_connection_for_handle(handle); 3934 if (!conn) break; 3935 // status = ok, page = 1 3936 if (!packet[2]) { 3937 uint8_t page_number = packet[5]; 3938 uint8_t maximum_page_number = packet[6]; 3939 const uint8_t * features = &packet[7]; 3940 bool done = false; 3941 switch (page_number){ 3942 case 1: 3943 hci_handle_remote_features_page_1(conn, features); 3944 if (maximum_page_number >= 2){ 3945 // get Secure Connections (Controller) from Page 2 if available 3946 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3947 } else { 3948 // otherwise, assume SC (Controller) == SC (Host) 3949 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3950 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3951 } 3952 done = true; 3953 } 3954 break; 3955 case 2: 3956 hci_handle_remote_features_page_2(conn, features); 3957 done = true; 3958 break; 3959 default: 3960 break; 3961 } 3962 if (!done) break; 3963 } 3964 hci_handle_remote_features_received(conn); 3965 break; 3966 3967 case HCI_EVENT_LINK_KEY_REQUEST: 3968 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3969 hci_event_link_key_request_get_bd_addr(packet, addr); 3970 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3971 if (!conn) break; 3972 3973 // lookup link key in db if not cached 3974 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3975 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3976 } 3977 3978 // response sent by hci_run() 3979 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3980 #endif 3981 break; 3982 3983 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3984 hci_event_link_key_request_get_bd_addr(packet, addr); 3985 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3986 if (!conn) break; 3987 3988 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3989 3990 // CVE-2020-26555: ignore NULL link key 3991 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3992 if (btstack_is_null(&packet[8], 16)) break; 3993 3994 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3995 // Change Connection Encryption keeps link key type 3996 if (link_key_type != CHANGED_COMBINATION_KEY){ 3997 conn->link_key_type = link_key_type; 3998 } 3999 4000 // cache link key. link keys stored in little-endian format for legacy reasons 4001 memcpy(&conn->link_key, &packet[8], 16); 4002 4003 // only store link key: 4004 // - if bondable enabled 4005 if (hci_stack->bondable == false) break; 4006 // - if security level sufficient 4007 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 4008 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 4009 break; 4010 } 4011 4012 case HCI_EVENT_PIN_CODE_REQUEST: 4013 hci_event_pin_code_request_get_bd_addr(packet, addr); 4014 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4015 if (!conn) break; 4016 4017 hci_pairing_started(conn, false); 4018 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 4019 if (!hci_stack->bondable ){ 4020 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4021 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 4022 hci_run(); 4023 return; 4024 } 4025 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 4026 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 4027 log_info("Level 4 required, but SC not supported -> abort"); 4028 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 4029 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4030 hci_run(); 4031 return; 4032 } 4033 break; 4034 4035 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 4036 hci_event_io_capability_response_get_bd_addr(packet, addr); 4037 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4038 if (!conn) break; 4039 4040 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 4041 hci_pairing_started(conn, true); 4042 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 4043 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 4044 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4045 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 4046 #endif 4047 break; 4048 4049 case HCI_EVENT_IO_CAPABILITY_REQUEST: 4050 hci_event_io_capability_response_get_bd_addr(packet, addr); 4051 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4052 if (!conn) break; 4053 4054 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 4055 hci_connection_timestamp(conn); 4056 hci_pairing_started(conn, true); 4057 break; 4058 4059 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4060 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4061 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4062 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4063 if (!conn) break; 4064 4065 hci_connection_timestamp(conn); 4066 4067 hci_pairing_started(conn, true); 4068 4069 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4070 break; 4071 #endif 4072 4073 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4074 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4075 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4076 if (!conn) break; 4077 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4078 if (hci_stack->ssp_auto_accept){ 4079 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4080 }; 4081 } else { 4082 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4083 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4084 // don't forward event to app 4085 hci_run(); 4086 return; 4087 } 4088 break; 4089 4090 case HCI_EVENT_USER_PASSKEY_REQUEST: 4091 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4092 if (hci_stack->ssp_auto_accept){ 4093 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4094 }; 4095 break; 4096 4097 case HCI_EVENT_MODE_CHANGE: 4098 handle = hci_event_mode_change_get_handle(packet); 4099 conn = hci_connection_for_handle(handle); 4100 if (!conn) break; 4101 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4102 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4103 break; 4104 #endif 4105 4106 case HCI_EVENT_ENCRYPTION_CHANGE: 4107 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4108 handle = hci_event_encryption_change_get_connection_handle(packet); 4109 conn = hci_connection_for_handle(handle); 4110 if (!conn) break; 4111 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4112 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4113 if (encryption_enabled){ 4114 if (hci_is_le_connection(conn)){ 4115 // For LE, we accept connection as encrypted 4116 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4117 } 4118 #ifdef ENABLE_CLASSIC 4119 else { 4120 4121 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4122 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4123 bool connected_uses_aes_ccm = encryption_enabled == 2; 4124 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4125 #ifdef ENABLE_TESTING_SUPPORT 4126 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4127 // - GAP/SEC/SEM/BI-31-C 4128 // - GAP/SEC/SEM/BI-32-C 4129 // - GAP/SEC/SEM/BI-33-C 4130 4131 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4132 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4133 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4134 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4135 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4136 } 4137 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4138 conn->link_key_type, new_link_key_type); 4139 conn->link_key_type = new_link_key_type; 4140 #else 4141 log_info("SC during pairing, but only E0 now -> abort"); 4142 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4143 break; 4144 #endif 4145 } 4146 4147 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4148 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4149 if (connected_uses_aes_ccm){ 4150 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4151 } 4152 #else 4153 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4154 // with encryption key size > hci_stack->gap_required_encyrption_key_size 4155 // for all operations that require any security. See BIAS attacks. 4156 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4157 #endif 4158 // validate encryption key size 4159 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4160 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4161 // already got encryption key size 4162 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4163 } else { 4164 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4165 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4166 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4167 } else { 4168 // if not, pretend everything is perfect 4169 hci_handle_read_encryption_key_size_complete(conn, 16); 4170 } 4171 } 4172 } 4173 #endif 4174 } else { 4175 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4176 } 4177 } else { 4178 #ifdef ENABLE_CLASSIC 4179 if (!hci_is_le_connection(conn)){ 4180 uint8_t status = hci_event_encryption_change_get_status(packet); 4181 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4182 conn->bonding_flags &= ~BONDING_DEDICATED; 4183 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4184 conn->bonding_status = status; 4185 } 4186 // trigger security update -> level 0 4187 hci_handle_mutual_authentication_completed(conn); 4188 } 4189 #endif 4190 } 4191 4192 break; 4193 4194 #ifdef ENABLE_CLASSIC 4195 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4196 handle = hci_event_authentication_complete_get_connection_handle(packet); 4197 conn = hci_connection_for_handle(handle); 4198 if (!conn) break; 4199 4200 // clear authentication active flag 4201 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4202 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4203 4204 // authenticated only if auth status == 0 4205 if (hci_event_authentication_complete_get_status(packet) == 0){ 4206 // authenticated 4207 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4208 4209 // If not already encrypted, start encryption 4210 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4211 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4212 break; 4213 } 4214 } 4215 4216 // emit updated security level (will be 0 if not authenticated) 4217 hci_handle_mutual_authentication_completed(conn); 4218 break; 4219 4220 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4221 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4222 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4223 if (!conn) break; 4224 4225 // treat successfully paired connection as authenticated 4226 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4227 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4228 } 4229 4230 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4231 break; 4232 #endif 4233 4234 // HCI_EVENT_DISCONNECTION_COMPLETE 4235 // has been split, to first notify stack before shutting connection down 4236 // see end of function, too. 4237 case HCI_EVENT_DISCONNECTION_COMPLETE: 4238 if (packet[2]) break; // status != 0 4239 handle = little_endian_read_16(packet, 3); 4240 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4241 if (hci_stack->acl_fragmentation_total_size > 0u) { 4242 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4243 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4244 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4245 hci_stack->acl_fragmentation_total_size = 0; 4246 hci_stack->acl_fragmentation_pos = 0; 4247 if (release_buffer){ 4248 hci_release_packet_buffer(); 4249 } 4250 } 4251 } 4252 4253 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4254 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4255 if (hci_stack->iso_fragmentation_total_size > 0u) { 4256 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4257 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4258 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4259 hci_stack->iso_fragmentation_total_size = 0; 4260 hci_stack->iso_fragmentation_pos = 0; 4261 if (release_buffer){ 4262 hci_release_packet_buffer(); 4263 } 4264 } 4265 } 4266 4267 // finalize iso stream for CIS handle 4268 iso_stream = hci_iso_stream_for_con_handle(handle); 4269 if (iso_stream != NULL){ 4270 hci_iso_stream_finalize(iso_stream); 4271 break; 4272 } 4273 #endif 4274 4275 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4276 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4277 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4278 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4279 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4280 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4281 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4282 hci_stack->num_cmd_packets = 1; 4283 } 4284 #endif 4285 4286 conn = hci_connection_for_handle(handle); 4287 if (!conn) break; 4288 #ifdef ENABLE_CLASSIC 4289 // pairing failed if it was ongoing 4290 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4291 #endif 4292 4293 // emit dedicatd bonding event 4294 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4295 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4296 } 4297 4298 // mark connection for shutdown, stop timers, reset state 4299 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4300 hci_connection_stop_timer(conn); 4301 hci_connection_init(conn); 4302 4303 #ifdef ENABLE_BLE 4304 #ifdef ENABLE_LE_PERIPHERAL 4305 // re-enable advertisements for le connections if active 4306 if (hci_is_le_connection(conn)){ 4307 hci_update_advertisements_enabled_for_current_roles(); 4308 } 4309 #endif 4310 #endif 4311 break; 4312 4313 case HCI_EVENT_HARDWARE_ERROR: 4314 log_error("Hardware Error: 0x%02x", packet[2]); 4315 if (hci_stack->hardware_error_callback){ 4316 (*hci_stack->hardware_error_callback)(packet[2]); 4317 } else { 4318 // if no special requests, just reboot stack 4319 hci_power_control_off(); 4320 hci_power_control_on(); 4321 } 4322 break; 4323 4324 #ifdef ENABLE_CLASSIC 4325 case HCI_EVENT_ROLE_CHANGE: 4326 if (packet[2]) break; // status != 0 4327 reverse_bd_addr(&packet[3], addr); 4328 addr_type = BD_ADDR_TYPE_ACL; 4329 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4330 if (!conn) break; 4331 conn->role = (hci_role_t) packet[9]; 4332 break; 4333 #endif 4334 4335 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4336 // release packet buffer only for asynchronous transport and if there are not further fragments 4337 if (hci_transport_synchronous()) { 4338 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4339 return; // instead of break: to avoid re-entering hci_run() 4340 } 4341 hci_stack->acl_fragmentation_tx_active = 0; 4342 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4343 hci_stack->iso_fragmentation_tx_active = 0; 4344 if (hci_stack->iso_fragmentation_total_size) break; 4345 #endif 4346 if (hci_stack->acl_fragmentation_total_size) break; 4347 4348 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4349 btstack_assert(hci_stack->hci_packet_buffer_reserved); 4350 hci_stack->hci_packet_buffer_reserved = false; 4351 4352 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4353 hci_iso_notify_can_send_now(); 4354 #endif 4355 // L2CAP receives this event via the hci_emit_event below 4356 4357 #ifdef ENABLE_CLASSIC 4358 // For SCO, we do the can_send_now_check here 4359 hci_notify_if_sco_can_send_now(); 4360 #endif 4361 break; 4362 4363 #ifdef ENABLE_CLASSIC 4364 case HCI_EVENT_SCO_CAN_SEND_NOW: 4365 // For SCO, we do the can_send_now_check here 4366 hci_stack->sco_can_send_now = true; 4367 hci_notify_if_sco_can_send_now(); 4368 return; 4369 4370 // explode inquriy results for easier consumption 4371 case HCI_EVENT_INQUIRY_RESULT: 4372 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4373 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4374 gap_inquiry_explode(packet, size); 4375 break; 4376 #endif 4377 4378 #ifdef ENABLE_BLE 4379 case HCI_EVENT_LE_META: 4380 switch (packet[2]){ 4381 #ifdef ENABLE_LE_CENTRAL 4382 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4383 if (!hci_stack->le_scanning_enabled) break; 4384 le_handle_advertisement_report(packet, size); 4385 break; 4386 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4387 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4388 if (!hci_stack->le_scanning_enabled) break; 4389 le_handle_extended_advertisement_report(packet, size); 4390 break; 4391 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4392 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4393 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4394 break; 4395 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4396 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4397 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4398 while (btstack_linked_list_iterator_has_next(&it)) { 4399 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4400 if (advertising_set->advertising_handle == advertising_handle){ 4401 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4402 } 4403 } 4404 break; 4405 #endif 4406 #endif 4407 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4408 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4409 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4410 hci_handle_le_connection_complete_event(packet); 4411 break; 4412 4413 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4414 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4415 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4416 conn = hci_connection_for_handle(handle); 4417 if (!conn) break; 4418 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4419 break; 4420 4421 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4422 // connection 4423 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4424 conn = hci_connection_for_handle(handle); 4425 if (conn) { 4426 // read arguments 4427 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4428 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4429 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4430 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4431 4432 // validate against current connection parameter range 4433 le_connection_parameter_range_t existing_range; 4434 gap_get_connection_parameter_range(&existing_range); 4435 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4436 if (update_parameter){ 4437 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4438 conn->le_conn_interval_min = le_conn_interval_min; 4439 conn->le_conn_interval_max = le_conn_interval_max; 4440 conn->le_conn_latency = le_conn_latency; 4441 conn->le_supervision_timeout = le_supervision_timeout; 4442 } else { 4443 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4444 } 4445 } 4446 break; 4447 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4448 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4449 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4450 conn = hci_connection_for_handle(handle); 4451 if (conn) { 4452 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4453 } 4454 break; 4455 #endif 4456 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4457 case HCI_SUBEVENT_LE_CIS_REQUEST: 4458 // incoming CIS request, allocate iso stream object and cache metadata 4459 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4460 hci_subevent_le_cis_request_get_cig_id(packet), 4461 hci_subevent_le_cis_request_get_cis_id(packet)); 4462 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4463 if (iso_stream != NULL){ 4464 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4465 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4466 } 4467 break; 4468 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4469 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4470 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4471 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4472 iso_stream = hci_iso_stream_for_con_handle(handle); 4473 btstack_assert(iso_stream != NULL); 4474 // track connection info 4475 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4476 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4477 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4478 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4479 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4480 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4481 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4482 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4483 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4484 // CIS Accept by Peripheral 4485 if (status == ERROR_CODE_SUCCESS){ 4486 if (iso_stream->max_sdu_p_to_c > 0){ 4487 // we're peripheral and we will send data 4488 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4489 } else { 4490 // we're peripheral and we will only receive data 4491 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4492 } 4493 } else { 4494 hci_cis_handle_created(iso_stream, status); 4495 } 4496 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4497 } else { 4498 // CIG Setup by Central 4499 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4500 btstack_assert(cig != NULL); 4501 // update iso stream state 4502 if (status == ERROR_CODE_SUCCESS){ 4503 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4504 } else { 4505 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4506 } 4507 // update cig state 4508 for (i=0;i<cig->num_cis;i++){ 4509 if (cig->cis_con_handles[i] == handle){ 4510 cig->cis_setup_active[i] = false; 4511 if (status == ERROR_CODE_SUCCESS){ 4512 cig->cis_established[i] = true; 4513 } else { 4514 hci_cis_handle_created(iso_stream, status); 4515 } 4516 } 4517 } 4518 4519 // trigger iso path setup if complete 4520 bool cis_setup_active = false; 4521 for (i=0;i<cig->num_cis;i++){ 4522 cis_setup_active |= cig->cis_setup_active[i]; 4523 } 4524 if (cis_setup_active == false){ 4525 cig->state_vars.next_cis = 0; 4526 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4527 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4528 } 4529 } 4530 } 4531 break; 4532 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4533 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4534 big = hci_big_for_handle(packet[4]); 4535 if (big != NULL){ 4536 uint8_t status = packet[3]; 4537 if (status == ERROR_CODE_SUCCESS){ 4538 // store bis_con_handles and trigger iso path setup 4539 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4540 4541 for (i=0;i<num_bis;i++){ 4542 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4543 big->bis_con_handles[i] = bis_handle; 4544 // assign bis handle 4545 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4546 while (btstack_linked_list_iterator_has_next(&it)){ 4547 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4548 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4549 (iso_stream->group_id == big->big_handle)){ 4550 iso_stream->cis_handle = bis_handle; 4551 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4552 break; 4553 } 4554 } 4555 } 4556 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4557 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4558 big->state_vars.next_bis = 0; 4559 } 4560 } else { 4561 // create BIG failed or has been stopped by us 4562 hci_iso_create_big_failed(big, status); 4563 } 4564 } 4565 break; 4566 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4567 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4568 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4569 if (big != NULL){ 4570 // finalize associated ISO streams 4571 4572 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4573 while (btstack_linked_list_iterator_has_next(&it)){ 4574 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4575 if (iso_stream->group_id == big->big_handle){ 4576 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4577 btstack_linked_list_iterator_remove(&it); 4578 btstack_memory_hci_iso_stream_free(iso_stream); 4579 } 4580 } 4581 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4582 switch (big->state){ 4583 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4584 hci_emit_big_created(big, big->state_vars.status); 4585 break; 4586 default: 4587 hci_emit_big_terminated(big); 4588 break; 4589 } 4590 } 4591 break; 4592 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4593 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4594 big_sync = hci_big_sync_for_handle(packet[4]); 4595 if (big_sync != NULL){ 4596 uint8_t status = packet[3]; 4597 if (status == ERROR_CODE_SUCCESS){ 4598 // store bis_con_handles and trigger iso path setup 4599 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4600 for (i=0;i<num_bis;i++){ 4601 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4602 big_sync->bis_con_handles[i] = bis_handle; 4603 // setup iso_stream_t 4604 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4605 while (btstack_linked_list_iterator_has_next(&it)){ 4606 iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4607 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4608 (iso_stream->group_id == big_sync->big_handle)){ 4609 iso_stream->cis_handle = bis_handle; 4610 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4611 break; 4612 } 4613 } 4614 } 4615 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4616 // trigger iso path setup 4617 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4618 big_sync->state_vars.next_bis = 0; 4619 } 4620 } else { 4621 // create BIG Sync failed or has been stopped by us 4622 hci_iso_big_sync_failed(big_sync, status); 4623 } 4624 } 4625 break; 4626 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4627 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4628 big_sync = hci_big_sync_for_handle(packet[4]); 4629 if (big_sync != NULL){ 4630 uint8_t big_handle = packet[4]; 4631 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4632 hci_emit_big_sync_stopped(big_handle); 4633 } 4634 break; 4635 #endif 4636 default: 4637 break; 4638 } 4639 break; 4640 #endif 4641 case HCI_EVENT_VENDOR_SPECIFIC: 4642 // Vendor specific commands often create vendor specific event instead of num completed packets 4643 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4644 switch (hci_stack->manufacturer){ 4645 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4646 hci_stack->num_cmd_packets = 1; 4647 break; 4648 default: 4649 break; 4650 } 4651 break; 4652 default: 4653 break; 4654 } 4655 4656 handle_event_for_current_stack_state(packet, size); 4657 4658 // notify upper stack 4659 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4660 4661 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4662 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4663 handle = little_endian_read_16(packet, 3); 4664 hci_connection_t * aConn = hci_connection_for_handle(handle); 4665 // discard connection if app did not trigger a reconnect in the event handler 4666 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4667 hci_shutdown_connection(aConn); 4668 } 4669 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4670 hci_controller_dump_packets(); 4671 #endif 4672 } 4673 4674 // execute main loop 4675 hci_run(); 4676 } 4677 4678 #ifdef ENABLE_CLASSIC 4679 4680 static void sco_handler(uint8_t * packet, uint16_t size){ 4681 // lookup connection struct 4682 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4683 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4684 if (!conn) return; 4685 4686 #ifdef ENABLE_SCO_OVER_HCI 4687 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4688 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4689 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4690 packet[2] = 0x3c; 4691 memmove(&packet[3], &packet[23], 63); 4692 size = 63; 4693 } 4694 } 4695 4696 if (hci_have_usb_transport()){ 4697 // Nothing to do 4698 } else { 4699 // 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); 4700 if (hci_stack->synchronous_flow_control_enabled == 0){ 4701 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4702 uint8_t max_sco_packets = (uint8_t) btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4703 if (conn->sco_tx_active == 0){ 4704 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4705 conn->sco_tx_active = 1; 4706 conn->sco_tx_ready = max_sco_packets; 4707 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4708 hci_notify_if_sco_can_send_now(); 4709 } 4710 } else { 4711 if (conn->sco_tx_ready < max_sco_packets){ 4712 conn->sco_tx_ready++; 4713 } 4714 hci_notify_if_sco_can_send_now(); 4715 } 4716 } 4717 } 4718 #endif 4719 4720 // deliver to app 4721 if (hci_stack->sco_packet_handler) { 4722 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4723 } 4724 4725 #ifdef HAVE_SCO_TRANSPORT 4726 // We can send one packet for each received packet 4727 conn->sco_tx_ready++; 4728 hci_notify_if_sco_can_send_now(); 4729 #endif 4730 4731 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4732 conn->num_packets_completed++; 4733 hci_stack->host_completed_packets = 1; 4734 hci_run(); 4735 #endif 4736 } 4737 #endif 4738 4739 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4740 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4741 // propagate ISO packets received as ACL 4742 hci_iso_stream_t * iso_stream = NULL; 4743 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4744 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4745 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4746 if (iso_stream != NULL){ 4747 packet_type = HCI_ISO_DATA_PACKET; 4748 } 4749 } 4750 #endif 4751 4752 // don't log internal events unless requested 4753 bool internal_event = (packet_type == HCI_EVENT_PACKET) && (hci_event_packet_get_type(packet) >= BTSTACK_EVENT_FIRST); 4754 bool log_packet = internal_event == false; 4755 #ifdef ENABLE_LOG_BTSTACK_EVENTS 4756 log_packet = true; 4757 #endif 4758 if (log_packet){ 4759 hci_dump_packet(packet_type, 1, packet, size); 4760 } 4761 4762 switch (packet_type) { 4763 case HCI_EVENT_PACKET: 4764 event_handler(packet, size); 4765 break; 4766 case HCI_ACL_DATA_PACKET: 4767 acl_handler(packet, size); 4768 break; 4769 #ifdef ENABLE_CLASSIC 4770 case HCI_SCO_DATA_PACKET: 4771 sco_handler(packet, size); 4772 break; 4773 #endif 4774 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4775 case HCI_ISO_DATA_PACKET: 4776 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4777 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4778 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4779 } 4780 hci_iso_packet_handler(iso_stream, packet, size); 4781 break; 4782 #endif 4783 default: 4784 break; 4785 } 4786 } 4787 4788 /** 4789 * @brief Add event packet handler. 4790 */ 4791 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4792 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4793 } 4794 4795 /** 4796 * @brief Remove event packet handler. 4797 */ 4798 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4799 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4800 } 4801 4802 /** Register HCI packet handlers */ 4803 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4804 hci_stack->acl_packet_handler = handler; 4805 } 4806 4807 #ifdef ENABLE_CLASSIC 4808 /** 4809 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4810 */ 4811 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4812 hci_stack->sco_packet_handler = handler; 4813 } 4814 #endif 4815 4816 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4817 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4818 hci_stack->iso_packet_handler = handler; 4819 } 4820 #endif 4821 4822 static void hci_state_reset(void){ 4823 // no connections yet 4824 hci_stack->connections = NULL; 4825 4826 // keep discoverable/connectable as this has been requested by the client(s) 4827 // hci_stack->discoverable = 0; 4828 // hci_stack->connectable = 0; 4829 // hci_stack->bondable = 1; 4830 // hci_stack->own_addr_type = 0; 4831 4832 // buffer is free 4833 hci_stack->hci_packet_buffer_reserved = false; 4834 4835 // no pending cmds 4836 hci_stack->decline_reason = 0; 4837 4838 hci_stack->secure_connections_active = false; 4839 4840 #ifdef ENABLE_CLASSIC 4841 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4842 4843 hci_stack->gap_tasks_classic = 4844 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4845 GAP_TASK_SET_CLASS_OF_DEVICE | 4846 GAP_TASK_SET_LOCAL_NAME | 4847 GAP_TASK_SET_EIR_DATA | 4848 GAP_TASK_WRITE_SCAN_ENABLE | 4849 GAP_TASK_WRITE_PAGE_TIMEOUT; 4850 #endif 4851 4852 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4853 hci_stack->classic_read_local_oob_data = false; 4854 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4855 #endif 4856 4857 // LE 4858 #ifdef ENABLE_BLE 4859 memset(hci_stack->le_random_address, 0, 6); 4860 hci_stack->le_random_address_set = 0; 4861 #endif 4862 #ifdef ENABLE_LE_CENTRAL 4863 hci_stack->le_scanning_active = false; 4864 hci_stack->le_scanning_param_update = true; 4865 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4866 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4867 hci_stack->le_whitelist_capacity = 0; 4868 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4869 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4870 #endif 4871 #endif 4872 #ifdef ENABLE_LE_PERIPHERAL 4873 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4874 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4875 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4876 } 4877 if (hci_stack->le_advertisements_data != NULL){ 4878 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4879 } 4880 #endif 4881 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4882 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4883 #endif 4884 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4885 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4886 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4887 #endif 4888 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4889 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4890 #endif 4891 } 4892 4893 #ifdef ENABLE_CLASSIC 4894 /** 4895 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4896 */ 4897 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4898 // store and open remote device db 4899 hci_stack->link_key_db = link_key_db; 4900 if (hci_stack->link_key_db) { 4901 hci_stack->link_key_db->open(); 4902 } 4903 } 4904 #endif 4905 4906 void hci_init(const hci_transport_t *transport, const void *config){ 4907 4908 #ifdef HAVE_MALLOC 4909 if (!hci_stack) { 4910 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4911 } 4912 btstack_assert(hci_stack != NULL); 4913 #else 4914 hci_stack = &hci_stack_static; 4915 #endif 4916 memset(hci_stack, 0, sizeof(hci_stack_t)); 4917 4918 // reference to use transport layer implementation 4919 hci_stack->hci_transport = transport; 4920 4921 // reference to used config 4922 hci_stack->config = config; 4923 4924 // setup pointer for outgoing packet buffer 4925 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4926 4927 // max acl payload size defined in config.h 4928 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4929 4930 // register packet handlers with transport 4931 transport->register_packet_handler(&packet_handler); 4932 4933 hci_stack->state = HCI_STATE_OFF; 4934 4935 // class of device 4936 hci_stack->class_of_device = 0x007a020c; // Smartphone 4937 4938 // bondable by default 4939 hci_stack->bondable = 1; 4940 4941 #ifdef ENABLE_CLASSIC 4942 // classic name 4943 hci_stack->local_name = default_classic_name; 4944 4945 // Master slave policy 4946 hci_stack->master_slave_policy = 1; 4947 4948 // Allow Role Switch 4949 hci_stack->allow_role_switch = 1; 4950 4951 // Default / minimum security level = 2 4952 hci_stack->gap_security_level = LEVEL_2; 4953 4954 // Default Security Mode 4 4955 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4956 4957 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4958 hci_stack->gap_required_encyrption_key_size = 7; 4959 4960 // Link Supervision Timeout 4961 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4962 4963 // Page Timeout 4964 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4965 4966 // All ACL packet types are enabledh 4967 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4968 #endif 4969 4970 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4971 hci_stack->ssp_enable = 1; 4972 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4973 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4974 hci_stack->ssp_auto_accept = 1; 4975 4976 // Secure Connections: enable (requires support from Controller) 4977 hci_stack->secure_connections_enable = true; 4978 4979 // voice setting - signed 16 bit pcm data with CVSD over the air 4980 hci_stack->sco_voice_setting = 0x60; 4981 4982 #ifdef ENABLE_BLE 4983 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4984 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4985 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4986 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4987 hci_stack->le_connection_latency = 4; // 4 4988 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4989 hci_stack->le_minimum_ce_length = 0; // 0 ms 4990 hci_stack->le_maximum_ce_length = 0; // 0 ms 4991 #endif 4992 4993 #ifdef ENABLE_LE_CENTRAL 4994 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4995 4996 // default LE Scanning 4997 hci_stack->le_scan_type = 0x01; // active 4998 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4999 hci_stack->le_scan_window = 0x30; // 30 ms 5000 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 5001 #endif 5002 5003 #ifdef ENABLE_LE_PERIPHERAL 5004 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 5005 5006 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 5007 hci_stack->le_advertisements_interval_min = 0x0800; 5008 hci_stack->le_advertisements_interval_max = 0x0800; 5009 hci_stack->le_advertisements_type = 0; 5010 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 5011 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 5012 hci_stack->le_advertisements_channel_map = 0x07; 5013 hci_stack->le_advertisements_filter_policy = 0; 5014 #endif 5015 5016 // connection parameter range used to answer connection parameter update requests in l2cap 5017 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 5018 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 5019 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 5020 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 5021 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 5022 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 5023 5024 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5025 hci_stack->iso_packets_to_queue = 1; 5026 #endif 5027 5028 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5029 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 5030 #endif 5031 5032 hci_state_reset(); 5033 } 5034 5035 void hci_deinit(void){ 5036 btstack_run_loop_remove_timer(&hci_stack->timeout); 5037 #ifdef HAVE_MALLOC 5038 if (hci_stack) { 5039 free(hci_stack); 5040 } 5041 #endif 5042 hci_stack = NULL; 5043 5044 #ifdef ENABLE_CLASSIC 5045 disable_l2cap_timeouts = 0; 5046 #endif 5047 } 5048 5049 /** 5050 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5051 */ 5052 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5053 hci_stack->chipset = chipset_driver; 5054 5055 // reset chipset driver - init is also called on power_up 5056 if (hci_stack->chipset && hci_stack->chipset->init){ 5057 hci_stack->chipset->init(hci_stack->config); 5058 } 5059 } 5060 5061 void hci_enable_custom_pre_init(void){ 5062 hci_stack->chipset_pre_init = true; 5063 } 5064 5065 /** 5066 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5067 */ 5068 void hci_set_control(const btstack_control_t *hardware_control){ 5069 // references to used control implementation 5070 hci_stack->control = hardware_control; 5071 // init with transport config 5072 hardware_control->init(hci_stack->config); 5073 } 5074 5075 static void hci_discard_connections(void){ 5076 btstack_linked_list_iterator_t it; 5077 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5078 while (btstack_linked_list_iterator_has_next(&it)){ 5079 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5080 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5081 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5082 hci_shutdown_connection(connection); 5083 } 5084 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5085 while (hci_stack->iso_streams != NULL){ 5086 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5087 } 5088 #endif 5089 } 5090 5091 void hci_close(void){ 5092 5093 #ifdef ENABLE_CLASSIC 5094 // close remote device db 5095 if (hci_stack->link_key_db) { 5096 hci_stack->link_key_db->close(); 5097 } 5098 #endif 5099 5100 hci_discard_connections(); 5101 5102 hci_power_control(HCI_POWER_OFF); 5103 5104 #ifdef HAVE_MALLOC 5105 free(hci_stack); 5106 #endif 5107 hci_stack = NULL; 5108 } 5109 5110 #ifdef HAVE_SCO_TRANSPORT 5111 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5112 hci_stack->sco_transport = sco_transport; 5113 sco_transport->register_packet_handler(&packet_handler); 5114 } 5115 #endif 5116 5117 #ifdef ENABLE_CLASSIC 5118 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5119 // validate ranage and set 5120 if (encryption_key_size < 7) return; 5121 if (encryption_key_size > 16) return; 5122 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5123 } 5124 5125 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5126 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5127 hci_stack->gap_security_mode = security_mode; 5128 return ERROR_CODE_SUCCESS; 5129 } else { 5130 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5131 } 5132 } 5133 5134 gap_security_mode_t gap_get_security_mode(void){ 5135 return hci_stack->gap_security_mode; 5136 } 5137 5138 void gap_set_security_level(gap_security_level_t security_level){ 5139 hci_stack->gap_security_level = security_level; 5140 } 5141 5142 gap_security_level_t gap_get_security_level(void){ 5143 if (hci_stack->gap_secure_connections_only_mode){ 5144 return LEVEL_4; 5145 } 5146 return hci_stack->gap_security_level; 5147 } 5148 5149 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5150 hci_stack->gap_minimal_service_security_level = security_level; 5151 } 5152 5153 void gap_set_secure_connections_only_mode(bool enable){ 5154 hci_stack->gap_secure_connections_only_mode = enable; 5155 } 5156 5157 bool gap_get_secure_connections_only_mode(void){ 5158 return hci_stack->gap_secure_connections_only_mode; 5159 } 5160 #endif 5161 5162 #ifdef ENABLE_CLASSIC 5163 void gap_set_class_of_device(uint32_t class_of_device){ 5164 hci_stack->class_of_device = class_of_device; 5165 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5166 hci_run(); 5167 } 5168 5169 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5170 hci_stack->default_link_policy_settings = default_link_policy_settings; 5171 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5172 hci_run(); 5173 } 5174 5175 void gap_set_allow_role_switch(bool allow_role_switch){ 5176 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5177 } 5178 5179 uint8_t hci_get_allow_role_switch(void){ 5180 return hci_stack->allow_role_switch; 5181 } 5182 5183 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5184 hci_stack->link_supervision_timeout = link_supervision_timeout; 5185 } 5186 5187 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5188 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5189 } 5190 5191 uint16_t hci_automatic_flush_timeout(void){ 5192 return hci_stack->automatic_flush_timeout; 5193 } 5194 5195 void hci_disable_l2cap_timeout_check(void){ 5196 disable_l2cap_timeouts = 1; 5197 } 5198 #endif 5199 5200 #ifndef HAVE_HOST_CONTROLLER_API 5201 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5202 void hci_set_bd_addr(bd_addr_t addr){ 5203 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5204 hci_stack->custom_bd_addr_set = 1; 5205 } 5206 #endif 5207 5208 // State-Module-Driver overview 5209 // state module low-level 5210 // HCI_STATE_OFF off close 5211 // HCI_STATE_INITIALIZING, on open 5212 // HCI_STATE_WORKING, on open 5213 // HCI_STATE_HALTING, on open 5214 // HCI_STATE_SLEEPING, off/sleep close 5215 // HCI_STATE_FALLING_ASLEEP on open 5216 5217 static int hci_power_control_on(void){ 5218 5219 // power on 5220 int err = 0; 5221 if (hci_stack->control && hci_stack->control->on){ 5222 err = (*hci_stack->control->on)(); 5223 } 5224 if (err){ 5225 log_error( "POWER_ON failed"); 5226 hci_emit_hci_open_failed(); 5227 return err; 5228 } 5229 5230 // int chipset driver 5231 if (hci_stack->chipset && hci_stack->chipset->init){ 5232 hci_stack->chipset->init(hci_stack->config); 5233 } 5234 5235 // init transport 5236 if (hci_stack->hci_transport->init){ 5237 hci_stack->hci_transport->init(hci_stack->config); 5238 } 5239 5240 // open transport 5241 err = hci_stack->hci_transport->open(); 5242 if (err){ 5243 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5244 if (hci_stack->control && hci_stack->control->off){ 5245 (*hci_stack->control->off)(); 5246 } 5247 hci_emit_hci_open_failed(); 5248 return err; 5249 } 5250 return 0; 5251 } 5252 5253 static void hci_power_control_off(void){ 5254 5255 log_info("hci_power_control_off"); 5256 5257 // close low-level device 5258 hci_stack->hci_transport->close(); 5259 5260 log_info("hci_power_control_off - hci_transport closed"); 5261 5262 // power off 5263 if (hci_stack->control && hci_stack->control->off){ 5264 (*hci_stack->control->off)(); 5265 } 5266 5267 log_info("hci_power_control_off - control closed"); 5268 5269 hci_stack->state = HCI_STATE_OFF; 5270 } 5271 5272 static void hci_power_control_sleep(void){ 5273 5274 log_info("hci_power_control_sleep"); 5275 5276 #if 0 5277 // don't close serial port during sleep 5278 5279 // close low-level device 5280 hci_stack->hci_transport->close(hci_stack->config); 5281 #endif 5282 5283 // sleep mode 5284 if (hci_stack->control && hci_stack->control->sleep){ 5285 (*hci_stack->control->sleep)(); 5286 } 5287 5288 hci_stack->state = HCI_STATE_SLEEPING; 5289 } 5290 5291 static int hci_power_control_wake(void){ 5292 5293 log_info("hci_power_control_wake"); 5294 5295 // wake on 5296 if (hci_stack->control && hci_stack->control->wake){ 5297 (*hci_stack->control->wake)(); 5298 } 5299 5300 #if 0 5301 // open low-level device 5302 int err = hci_stack->hci_transport->open(hci_stack->config); 5303 if (err){ 5304 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5305 if (hci_stack->control && hci_stack->control->off){ 5306 (*hci_stack->control->off)(); 5307 } 5308 hci_emit_hci_open_failed(); 5309 return err; 5310 } 5311 #endif 5312 5313 return 0; 5314 } 5315 5316 static void hci_power_enter_initializing_state(void){ 5317 // set up state machine 5318 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5319 hci_stack->hci_packet_buffer_reserved = false; 5320 hci_stack->state = HCI_STATE_INITIALIZING; 5321 5322 #ifndef HAVE_HOST_CONTROLLER_API 5323 if (hci_stack->chipset_pre_init) { 5324 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5325 } else 5326 #endif 5327 { 5328 hci_stack->substate = HCI_INIT_SEND_RESET; 5329 } 5330 } 5331 5332 static void hci_power_enter_halting_state(void){ 5333 #ifdef ENABLE_BLE 5334 // drop entries scheduled for removal, mark others for re-adding 5335 btstack_linked_list_iterator_t it; 5336 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5337 while (btstack_linked_list_iterator_has_next(&it)){ 5338 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5339 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5340 btstack_linked_list_iterator_remove(&it); 5341 btstack_memory_whitelist_entry_free(entry); 5342 } else { 5343 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5344 } 5345 } 5346 #ifdef ENABLE_LE_CENTRAL 5347 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5348 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5349 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5350 while (btstack_linked_list_iterator_has_next(&it)){ 5351 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5352 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5353 btstack_linked_list_iterator_remove(&it); 5354 btstack_memory_periodic_advertiser_list_entry_free(entry); 5355 } else { 5356 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5357 continue; 5358 } 5359 } 5360 #endif 5361 #endif 5362 #endif 5363 // see hci_run 5364 hci_stack->state = HCI_STATE_HALTING; 5365 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5366 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5367 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5368 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5369 btstack_run_loop_add_timer(&hci_stack->timeout); 5370 } 5371 5372 // returns error 5373 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5374 int err; 5375 switch (power_mode){ 5376 case HCI_POWER_ON: 5377 err = hci_power_control_on(); 5378 if (err != 0) { 5379 log_error("hci_power_control_on() error %d", err); 5380 return err; 5381 } 5382 hci_power_enter_initializing_state(); 5383 break; 5384 case HCI_POWER_OFF: 5385 // do nothing 5386 break; 5387 case HCI_POWER_SLEEP: 5388 // do nothing (with SLEEP == OFF) 5389 break; 5390 default: 5391 btstack_assert(false); 5392 break; 5393 } 5394 return ERROR_CODE_SUCCESS; 5395 } 5396 5397 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5398 switch (power_mode){ 5399 case HCI_POWER_ON: 5400 // do nothing 5401 break; 5402 case HCI_POWER_OFF: 5403 // no connections yet, just turn it off 5404 hci_power_control_off(); 5405 break; 5406 case HCI_POWER_SLEEP: 5407 // no connections yet, just turn it off 5408 hci_power_control_sleep(); 5409 break; 5410 default: 5411 btstack_assert(false); 5412 break; 5413 } 5414 return ERROR_CODE_SUCCESS; 5415 } 5416 5417 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5418 switch (power_mode){ 5419 case HCI_POWER_ON: 5420 // do nothing 5421 break; 5422 case HCI_POWER_OFF: 5423 hci_power_enter_halting_state(); 5424 break; 5425 case HCI_POWER_SLEEP: 5426 // see hci_run 5427 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5428 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5429 break; 5430 default: 5431 btstack_assert(false); 5432 break; 5433 } 5434 return ERROR_CODE_SUCCESS; 5435 } 5436 5437 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5438 switch (power_mode){ 5439 case HCI_POWER_ON: 5440 hci_power_enter_initializing_state(); 5441 break; 5442 case HCI_POWER_OFF: 5443 // do nothing 5444 break; 5445 case HCI_POWER_SLEEP: 5446 // see hci_run 5447 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5448 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5449 break; 5450 default: 5451 btstack_assert(false); 5452 break; 5453 } 5454 return ERROR_CODE_SUCCESS; 5455 } 5456 5457 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5458 switch (power_mode){ 5459 case HCI_POWER_ON: 5460 hci_power_enter_initializing_state(); 5461 break; 5462 case HCI_POWER_OFF: 5463 hci_power_enter_halting_state(); 5464 break; 5465 case HCI_POWER_SLEEP: 5466 // do nothing 5467 break; 5468 default: 5469 btstack_assert(false); 5470 break; 5471 } 5472 return ERROR_CODE_SUCCESS; 5473 } 5474 5475 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5476 int err; 5477 switch (power_mode){ 5478 case HCI_POWER_ON: 5479 err = hci_power_control_wake(); 5480 if (err) return err; 5481 hci_power_enter_initializing_state(); 5482 break; 5483 case HCI_POWER_OFF: 5484 hci_power_enter_halting_state(); 5485 break; 5486 case HCI_POWER_SLEEP: 5487 // do nothing 5488 break; 5489 default: 5490 btstack_assert(false); 5491 break; 5492 } 5493 return ERROR_CODE_SUCCESS; 5494 } 5495 5496 int hci_power_control(HCI_POWER_MODE power_mode){ 5497 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5498 btstack_run_loop_remove_timer(&hci_stack->timeout); 5499 int err = 0; 5500 switch (hci_stack->state){ 5501 case HCI_STATE_OFF: 5502 err = hci_power_control_state_off(power_mode); 5503 break; 5504 case HCI_STATE_INITIALIZING: 5505 err = hci_power_control_state_initializing(power_mode); 5506 break; 5507 case HCI_STATE_WORKING: 5508 err = hci_power_control_state_working(power_mode); 5509 break; 5510 case HCI_STATE_HALTING: 5511 err = hci_power_control_state_halting(power_mode); 5512 break; 5513 case HCI_STATE_FALLING_ASLEEP: 5514 err = hci_power_control_state_falling_asleep(power_mode); 5515 break; 5516 case HCI_STATE_SLEEPING: 5517 err = hci_power_control_state_sleeping(power_mode); 5518 break; 5519 default: 5520 btstack_assert(false); 5521 break; 5522 } 5523 if (err != 0){ 5524 return err; 5525 } 5526 5527 // create internal event 5528 hci_emit_state(); 5529 5530 // trigger next/first action 5531 hci_run(); 5532 5533 return 0; 5534 } 5535 5536 5537 static void hci_halting_run(void) { 5538 5539 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5540 5541 hci_connection_t *connection; 5542 #ifdef ENABLE_BLE 5543 #ifdef ENABLE_LE_PERIPHERAL 5544 bool stop_advertismenets; 5545 #endif 5546 #endif 5547 5548 switch (hci_stack->substate) { 5549 case HCI_HALTING_CLASSIC_STOP: 5550 #ifdef ENABLE_CLASSIC 5551 if (!hci_can_send_command_packet_now()) return; 5552 5553 if (hci_stack->connectable || hci_stack->discoverable){ 5554 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5555 hci_send_cmd(&hci_write_scan_enable, 0); 5556 return; 5557 } 5558 #endif 5559 /* fall through */ 5560 5561 case HCI_HALTING_LE_ADV_STOP: 5562 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5563 5564 #ifdef ENABLE_BLE 5565 #ifdef ENABLE_LE_PERIPHERAL 5566 if (!hci_can_send_command_packet_now()) return; 5567 5568 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5569 5570 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5571 if (hci_le_extended_advertising_supported()){ 5572 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5573 btstack_linked_list_iterator_t it; 5574 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5575 // stop all periodic advertisements and check if an extended set is active 5576 while (btstack_linked_list_iterator_has_next(&it)){ 5577 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5578 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5579 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5580 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5581 return; 5582 } 5583 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5584 stop_advertismenets = true; 5585 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5586 } 5587 } 5588 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5589 if (stop_advertismenets){ 5590 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5591 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5592 return; 5593 } 5594 } else 5595 #else /* ENABLE_LE_PERIPHERAL */ 5596 { 5597 if (stop_advertismenets) { 5598 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5599 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5600 return; 5601 } 5602 } 5603 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5604 #endif /* ENABLE_LE_PERIPHERAL */ 5605 #endif /* ENABLE_BLE */ 5606 5607 /* fall through */ 5608 5609 case HCI_HALTING_LE_SCAN_STOP: 5610 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5611 if (!hci_can_send_command_packet_now()) return; 5612 5613 #ifdef ENABLE_BLE 5614 #ifdef ENABLE_LE_CENTRAL 5615 if (hci_stack->le_scanning_active){ 5616 hci_le_scan_stop(); 5617 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5618 return; 5619 } 5620 #endif 5621 #endif 5622 5623 /* fall through */ 5624 5625 case HCI_HALTING_DISCONNECT_ALL: 5626 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5627 if (!hci_can_send_command_packet_now()) return; 5628 5629 // close all open connections 5630 connection = (hci_connection_t *) hci_stack->connections; 5631 if (connection) { 5632 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5633 5634 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5635 5636 // check state 5637 switch(connection->state) { 5638 case SENT_DISCONNECT: 5639 case RECEIVED_DISCONNECTION_COMPLETE: 5640 // wait until connection is gone 5641 return; 5642 default: 5643 break; 5644 } 5645 5646 // finally, send the disconnect command 5647 connection->state = SENT_DISCONNECT; 5648 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5649 return; 5650 } 5651 5652 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5653 // stop BIGs and BIG Syncs 5654 if (hci_stack->le_audio_bigs != NULL){ 5655 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5656 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5657 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5658 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5659 return; 5660 } 5661 if (hci_stack->le_audio_big_syncs != NULL){ 5662 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5663 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5664 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5665 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5666 return; 5667 } 5668 #endif 5669 5670 btstack_run_loop_remove_timer(&hci_stack->timeout); 5671 5672 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5673 log_info("HCI_STATE_HALTING: wait 50 ms"); 5674 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5675 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5676 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5677 btstack_run_loop_add_timer(&hci_stack->timeout); 5678 break; 5679 5680 case HCI_HALTING_W4_CLOSE_TIMER: 5681 // keep waiting 5682 break; 5683 5684 case HCI_HALTING_CLOSE: 5685 // close left over connections (that had not been properly closed before) 5686 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5687 hci_discard_connections(); 5688 5689 log_info("HCI_STATE_HALTING, calling off"); 5690 5691 // switch mode 5692 hci_power_control_off(); 5693 5694 log_info("HCI_STATE_HALTING, emitting state"); 5695 hci_emit_state(); 5696 log_info("HCI_STATE_HALTING, done"); 5697 break; 5698 5699 default: 5700 break; 5701 } 5702 }; 5703 5704 static void hci_falling_asleep_run(void){ 5705 hci_connection_t * connection; 5706 switch(hci_stack->substate) { 5707 case HCI_FALLING_ASLEEP_DISCONNECT: 5708 log_info("HCI_STATE_FALLING_ASLEEP"); 5709 // close all open connections 5710 connection = (hci_connection_t *) hci_stack->connections; 5711 if (connection){ 5712 5713 // send disconnect 5714 if (!hci_can_send_command_packet_now()) return; 5715 5716 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5717 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5718 5719 // send disconnected event right away - causes higher layer connections to get closed, too. 5720 hci_shutdown_connection(connection); 5721 return; 5722 } 5723 5724 if (hci_classic_supported()){ 5725 // disable page and inquiry scan 5726 if (!hci_can_send_command_packet_now()) return; 5727 5728 log_info("HCI_STATE_HALTING, disabling inq scans"); 5729 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5730 5731 // continue in next sub state 5732 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5733 break; 5734 } 5735 5736 /* fall through */ 5737 5738 case HCI_FALLING_ASLEEP_COMPLETE: 5739 log_info("HCI_STATE_HALTING, calling sleep"); 5740 // switch mode 5741 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5742 hci_emit_state(); 5743 break; 5744 5745 default: 5746 break; 5747 } 5748 } 5749 5750 #ifdef ENABLE_CLASSIC 5751 5752 static void hci_update_scan_enable(void){ 5753 // 2 = page scan, 1 = inq scan 5754 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5755 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5756 hci_run(); 5757 } 5758 5759 void gap_discoverable_control(uint8_t enable){ 5760 if (enable) enable = 1; // normalize argument 5761 5762 if (hci_stack->discoverable == enable){ 5763 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5764 return; 5765 } 5766 5767 hci_stack->discoverable = enable; 5768 hci_update_scan_enable(); 5769 } 5770 5771 void gap_connectable_control(uint8_t enable){ 5772 if (enable) enable = 1; // normalize argument 5773 5774 // don't emit event 5775 if (hci_stack->connectable == enable) return; 5776 5777 hci_stack->connectable = enable; 5778 hci_update_scan_enable(); 5779 } 5780 #endif 5781 5782 void gap_local_bd_addr(bd_addr_t address_buffer){ 5783 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5784 } 5785 5786 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5787 static void hci_host_num_completed_packets(void){ 5788 5789 // create packet manually as arrays are not supported and num_commands should not get reduced 5790 hci_reserve_packet_buffer(); 5791 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5792 5793 uint16_t size = 0; 5794 uint16_t num_handles = 0; 5795 packet[size++] = 0x35; 5796 packet[size++] = 0x0c; 5797 size++; // skip param len 5798 size++; // skip num handles 5799 5800 // add { handle, packets } entries 5801 btstack_linked_item_t * it; 5802 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5803 hci_connection_t * connection = (hci_connection_t *) it; 5804 if (connection->num_packets_completed){ 5805 little_endian_store_16(packet, size, connection->con_handle); 5806 size += 2; 5807 little_endian_store_16(packet, size, connection->num_packets_completed); 5808 size += 2; 5809 // 5810 num_handles++; 5811 connection->num_packets_completed = 0; 5812 } 5813 } 5814 5815 packet[2] = size - 3; 5816 packet[3] = num_handles; 5817 5818 hci_stack->host_completed_packets = 0; 5819 5820 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5821 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5822 5823 // release packet buffer for synchronous transport implementations 5824 if (hci_transport_synchronous()){ 5825 hci_release_packet_buffer(); 5826 hci_emit_transport_packet_sent(); 5827 } 5828 } 5829 #endif 5830 5831 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5832 UNUSED(ds); 5833 hci_stack->substate = HCI_HALTING_CLOSE; 5834 hci_halting_run(); 5835 } 5836 5837 static bool hci_run_acl_fragments(void){ 5838 if (hci_stack->acl_fragmentation_total_size > 0u) { 5839 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5840 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5841 if (connection) { 5842 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5843 hci_send_acl_packet_fragments(connection); 5844 return true; 5845 } 5846 } else { 5847 // connection gone -> discard further fragments 5848 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5849 hci_stack->acl_fragmentation_total_size = 0; 5850 hci_stack->acl_fragmentation_pos = 0; 5851 } 5852 } 5853 return false; 5854 } 5855 5856 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5857 static bool hci_run_iso_fragments(void){ 5858 if (hci_stack->iso_fragmentation_total_size > 0u) { 5859 // TODO: flow control 5860 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5861 hci_send_iso_packet_fragments(); 5862 return true; 5863 } 5864 } 5865 return false; 5866 } 5867 #endif 5868 5869 #ifdef ENABLE_CLASSIC 5870 5871 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5872 static bool hci_classic_operation_active(void) { 5873 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5874 return true; 5875 } 5876 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5877 return true; 5878 } 5879 btstack_linked_item_t * it; 5880 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5881 hci_connection_t *connection = (hci_connection_t *) it; 5882 switch (connection->state) { 5883 case SENT_CREATE_CONNECTION: 5884 case SENT_CANCEL_CONNECTION: 5885 case SENT_DISCONNECT: 5886 return true; 5887 default: 5888 break; 5889 } 5890 } 5891 return false; 5892 } 5893 #endif 5894 5895 static bool hci_run_general_gap_classic(void){ 5896 5897 // assert stack is working and classic is active 5898 if (hci_classic_supported() == false) return false; 5899 if (hci_stack->state != HCI_STATE_WORKING) return false; 5900 5901 // decline incoming connections 5902 if (hci_stack->decline_reason){ 5903 uint8_t reason = hci_stack->decline_reason; 5904 hci_stack->decline_reason = 0; 5905 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5906 return true; 5907 } 5908 5909 if (hci_stack->gap_tasks_classic != 0){ 5910 hci_run_gap_tasks_classic(); 5911 return true; 5912 } 5913 5914 // start/stop inquiry 5915 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5916 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5917 if (hci_classic_operation_active() == false) 5918 #endif 5919 { 5920 uint8_t duration = hci_stack->inquiry_state; 5921 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5922 if (hci_stack->inquiry_max_period_length != 0){ 5923 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); 5924 } else { 5925 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5926 } 5927 return true; 5928 } 5929 } 5930 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5931 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5932 hci_send_cmd(&hci_inquiry_cancel); 5933 return true; 5934 } 5935 5936 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5937 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5938 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5939 return true; 5940 } 5941 5942 // remote name request 5943 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5944 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5945 if (hci_classic_operation_active() == false) 5946 #endif 5947 { 5948 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5949 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5950 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5951 return true; 5952 } 5953 } 5954 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5955 // Local OOB data 5956 if (hci_stack->classic_read_local_oob_data){ 5957 hci_stack->classic_read_local_oob_data = false; 5958 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5959 hci_send_cmd(&hci_read_local_extended_oob_data); 5960 } else { 5961 hci_send_cmd(&hci_read_local_oob_data); 5962 } 5963 } 5964 #endif 5965 // pairing 5966 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5967 uint8_t state = hci_stack->gap_pairing_state; 5968 uint8_t pin_code[PIN_CODE_LEN]; 5969 switch (state){ 5970 case GAP_PAIRING_STATE_SEND_PIN: 5971 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5972 memset(pin_code, 0, 16); 5973 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5974 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5975 break; 5976 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5977 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5978 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5979 break; 5980 case GAP_PAIRING_STATE_SEND_PASSKEY: 5981 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5982 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5983 break; 5984 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5985 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5986 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5987 break; 5988 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5989 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5990 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5991 break; 5992 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5993 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5994 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5995 break; 5996 default: 5997 break; 5998 } 5999 return true; 6000 } 6001 return false; 6002 } 6003 #endif 6004 6005 #ifdef ENABLE_BLE 6006 6007 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6008 static uint8_t hci_le_num_phys(uint8_t phys){ 6009 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 6010 btstack_assert(phys); 6011 return num_bits_set[phys]; 6012 } 6013 #endif 6014 6015 #ifdef ENABLE_LE_CENTRAL 6016 static void hci_le_scan_stop(void){ 6017 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6018 if (hci_le_extended_advertising_supported()) { 6019 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 6020 } else 6021 #endif 6022 { 6023 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 6024 } 6025 } 6026 6027 static void 6028 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 6029 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6030 if (hci_le_extended_advertising_supported()) { 6031 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 6032 uint16_t le_connection_scan_interval[3]; 6033 uint16_t le_connection_scan_window[3]; 6034 uint16_t le_connection_interval_min[3]; 6035 uint16_t le_connection_interval_max[3]; 6036 uint16_t le_connection_latency[3]; 6037 uint16_t le_supervision_timeout[3]; 6038 uint16_t le_minimum_ce_length[3]; 6039 uint16_t le_maximum_ce_length[3]; 6040 6041 uint8_t i; 6042 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 6043 for (i=0;i<num_phys;i++){ 6044 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 6045 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6046 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6047 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6048 le_connection_latency[i] = hci_stack->le_connection_latency; 6049 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6050 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6051 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6052 } 6053 hci_send_cmd(&hci_le_extended_create_connection, 6054 initiator_filter_policy, 6055 hci_stack->le_connection_own_addr_type, // our addr type: 6056 address_type, // peer address type 6057 address, // peer bd addr 6058 hci_stack->le_connection_phys, // initiating PHY 6059 le_connection_scan_interval, // conn scan interval 6060 le_connection_scan_window, // conn scan windows 6061 le_connection_interval_min, // conn interval min 6062 le_connection_interval_max, // conn interval max 6063 le_connection_latency, // conn latency 6064 le_supervision_timeout, // conn latency 6065 le_minimum_ce_length, // min ce length 6066 le_maximum_ce_length // max ce length 6067 ); 6068 } else 6069 #endif 6070 { 6071 hci_send_cmd(&hci_le_create_connection, 6072 hci_stack->le_connection_scan_interval, // conn scan interval 6073 hci_stack->le_connection_scan_window, // conn scan windows 6074 initiator_filter_policy, // don't use whitelist 6075 address_type, // peer address type 6076 address, // peer bd addr 6077 hci_stack->le_connection_own_addr_type, // our addr type: 6078 hci_stack->le_connection_interval_min, // conn interval min 6079 hci_stack->le_connection_interval_max, // conn interval max 6080 hci_stack->le_connection_latency, // conn latency 6081 hci_stack->le_supervision_timeout, // conn latency 6082 hci_stack->le_minimum_ce_length, // min ce length 6083 hci_stack->le_maximum_ce_length // max ce length 6084 ); 6085 } 6086 } 6087 #endif 6088 6089 #ifdef ENABLE_LE_PERIPHERAL 6090 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6091 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6092 uint8_t operation = 0; 6093 if (pos == 0){ 6094 // first fragment or complete data 6095 operation |= 1; 6096 } 6097 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6098 // last fragment or complete data 6099 operation |= 2; 6100 } 6101 return operation; 6102 } 6103 #endif 6104 #endif 6105 6106 static bool hci_whitelist_modification_pending(void) { 6107 btstack_linked_list_iterator_t it; 6108 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6109 while (btstack_linked_list_iterator_has_next(&it)){ 6110 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6111 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6112 return true; 6113 } 6114 } 6115 return false; 6116 } 6117 6118 static bool hci_whitelist_modification_process(void){ 6119 // add/remove entries 6120 btstack_linked_list_iterator_t it; 6121 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 6122 while (btstack_linked_list_iterator_has_next(&it)){ 6123 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 6124 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6125 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6126 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6127 bd_addr_type_t address_type = entry->address_type; 6128 bd_addr_t address; 6129 memcpy(address, entry->address, 6); 6130 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6131 // remove from whitelist if not scheduled for re-addition 6132 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6133 btstack_memory_whitelist_entry_free(entry); 6134 } 6135 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6136 return true; 6137 } 6138 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6139 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6140 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6141 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6142 return true; 6143 } 6144 } 6145 return false; 6146 } 6147 6148 static bool hci_run_general_gap_le(void){ 6149 6150 btstack_linked_list_iterator_t lit; 6151 UNUSED(lit); 6152 6153 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6154 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6155 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6156 hci_stack->le_resolvable_private_address_update_s = 0; 6157 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6158 return true; 6159 } 6160 #endif 6161 6162 // Phase 1: collect what to stop 6163 6164 #ifdef ENABLE_LE_CENTRAL 6165 bool scanning_stop = false; 6166 bool connecting_stop = false; 6167 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6168 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6169 bool periodic_sync_stop = false; 6170 #endif 6171 #endif 6172 #endif 6173 6174 #ifdef ENABLE_LE_PERIPHERAL 6175 bool advertising_stop = false; 6176 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6177 le_advertising_set_t * advertising_stop_set = NULL; 6178 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6179 bool periodic_advertising_stop = false; 6180 #endif 6181 #endif 6182 #endif 6183 6184 // check if own address changes 6185 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6186 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6187 6188 // check if whitelist needs modification 6189 bool whitelist_modification_pending = hci_whitelist_modification_pending(); 6190 6191 // check if resolving list needs modification 6192 bool resolving_list_modification_pending = false; 6193 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6194 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6195 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6196 resolving_list_modification_pending = true; 6197 } 6198 #endif 6199 6200 #ifdef ENABLE_LE_CENTRAL 6201 6202 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6203 // check if periodic advertiser list needs modification 6204 bool periodic_list_modification_pending = false; 6205 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6206 while (btstack_linked_list_iterator_has_next(&lit)){ 6207 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6208 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6209 periodic_list_modification_pending = true; 6210 break; 6211 } 6212 } 6213 #endif 6214 6215 // scanning control 6216 if (hci_stack->le_scanning_active) { 6217 // stop if: 6218 // - parameter change required 6219 // - it's disabled 6220 // - whitelist change required but used for scanning 6221 // - resolving list modified 6222 // - own address changes 6223 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6224 if ((hci_stack->le_scanning_param_update) || 6225 !hci_stack->le_scanning_enabled || 6226 (scanning_uses_whitelist && whitelist_modification_pending) || 6227 resolving_list_modification_pending || 6228 random_address_change){ 6229 6230 scanning_stop = true; 6231 } 6232 } 6233 6234 // connecting control 6235 bool connecting_with_whitelist; 6236 switch (hci_stack->le_connecting_state){ 6237 case LE_CONNECTING_DIRECT: 6238 case LE_CONNECTING_WHITELIST: 6239 // stop connecting if: 6240 // - connecting uses white and whitelist modification pending 6241 // - if it got disabled 6242 // - resolving list modified 6243 // - own address changes 6244 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6245 if ((connecting_with_whitelist && whitelist_modification_pending) || 6246 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6247 resolving_list_modification_pending || 6248 random_address_change) { 6249 6250 connecting_stop = true; 6251 } 6252 break; 6253 default: 6254 break; 6255 } 6256 6257 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6258 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6259 // periodic sync control 6260 bool sync_with_advertiser_list; 6261 switch(hci_stack->le_periodic_sync_state){ 6262 case LE_CONNECTING_DIRECT: 6263 case LE_CONNECTING_WHITELIST: 6264 // stop sync if: 6265 // - sync with advertiser list and advertiser list modification pending 6266 // - if it got disabled 6267 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6268 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6269 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6270 periodic_sync_stop = true; 6271 } 6272 break; 6273 default: 6274 break; 6275 } 6276 #endif 6277 #endif 6278 6279 #endif /* ENABLE_LE_CENTRAL */ 6280 6281 #ifdef ENABLE_LE_PERIPHERAL 6282 // le advertisement control 6283 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6284 // stop if: 6285 // - parameter change required 6286 // - random address used in advertising and changes 6287 // - it's disabled 6288 // - whitelist change required but used for advertisement filter policy 6289 // - resolving list modified 6290 // - own address changes 6291 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6292 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6293 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6294 if (advertising_change || 6295 (advertising_uses_random_address && random_address_change) || 6296 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6297 (advertising_uses_whitelist && whitelist_modification_pending) || 6298 resolving_list_modification_pending || 6299 random_address_change) { 6300 6301 advertising_stop = true; 6302 } 6303 } 6304 6305 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6306 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6307 btstack_linked_list_iterator_t it; 6308 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6309 while (btstack_linked_list_iterator_has_next(&it)){ 6310 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6311 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6312 // stop if: 6313 // - parameter change required 6314 // - random address used in connectable advertising and changes 6315 // - it's disabled 6316 // - whitelist change required but used for advertisement filter policy 6317 // - resolving list modified 6318 // - own address changes 6319 // - advertisement set will be removed 6320 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6321 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6322 bool advertising_uses_random_address = 6323 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6324 advertising_connectable; 6325 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6326 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6327 bool advertising_set_random_address_change = 6328 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6329 bool advertising_set_will_be_removed = 6330 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6331 if (advertising_parameter_change || 6332 (advertising_uses_random_address && advertising_set_random_address_change) || 6333 (advertising_enabled == false) || 6334 (advertising_uses_whitelist && whitelist_modification_pending) || 6335 resolving_list_modification_pending || 6336 advertising_set_will_be_removed) { 6337 6338 advertising_stop = true; 6339 advertising_stop_set = advertising_set; 6340 break; 6341 } 6342 } 6343 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6344 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6345 // stop if: 6346 // - it's disabled 6347 // - parameter change required 6348 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6349 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6350 if ((periodic_enabled == false) || periodic_parameter_change){ 6351 periodic_advertising_stop = true; 6352 advertising_stop_set = advertising_set; 6353 } 6354 } 6355 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6356 } 6357 } 6358 #endif 6359 6360 #endif 6361 6362 6363 // Phase 2: stop everything that should be off during modifications 6364 6365 6366 // 2.1 Outgoing connection 6367 #ifdef ENABLE_LE_CENTRAL 6368 if (connecting_stop){ 6369 hci_send_cmd(&hci_le_create_connection_cancel); 6370 return true; 6371 } 6372 #endif 6373 6374 // 2.2 Scanning 6375 #ifdef ENABLE_LE_CENTRAL 6376 if (scanning_stop){ 6377 hci_stack->le_scanning_active = false; 6378 hci_le_scan_stop(); 6379 return true; 6380 } 6381 6382 // 2.3 Periodic Sync 6383 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6384 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6385 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6386 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6387 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6388 return true; 6389 } 6390 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6391 if (periodic_sync_stop){ 6392 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6393 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6394 return true; 6395 } 6396 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6397 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6398 #endif /* ENABLE_LE_CENTRAL */ 6399 6400 // 2.4 Advertising: legacy, extended, periodic 6401 #ifdef ENABLE_LE_PERIPHERAL 6402 if (advertising_stop){ 6403 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6404 if (hci_le_extended_advertising_supported()) { 6405 uint8_t advertising_stop_handle; 6406 if (advertising_stop_set != NULL){ 6407 advertising_stop_handle = advertising_stop_set->advertising_handle; 6408 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6409 } else { 6410 advertising_stop_handle = 0; 6411 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6412 } 6413 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6414 const uint16_t durations[] = { 0 }; 6415 const uint16_t max_events[] = { 0 }; 6416 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6417 } else 6418 #endif 6419 { 6420 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6421 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6422 } 6423 return true; 6424 } 6425 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6426 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6427 if (periodic_advertising_stop){ 6428 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6429 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6430 return true; 6431 } 6432 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6433 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6434 #endif /* ENABLE_LE_PERIPHERAL */ 6435 6436 6437 // Phase 3: modify 6438 6439 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6440 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6441 // GAP Privacy, notify clients upon upcoming random address change 6442 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6443 // notify might cause hci_run to get executed, check if we still can send 6444 gap_privacy_clients_notify(hci_stack->le_random_address); 6445 if (!hci_can_send_command_packet_now()) { 6446 return true; 6447 } 6448 } 6449 6450 // - wait until privacy update completed 6451 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6452 return false; 6453 } 6454 6455 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6456 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6457 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6458 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6459 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6460 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6461 #endif 6462 return true; 6463 } 6464 6465 #ifdef ENABLE_LE_CENTRAL 6466 if (hci_stack->le_scanning_param_update){ 6467 hci_stack->le_scanning_param_update = false; 6468 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6469 if (hci_le_extended_advertising_supported()){ 6470 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6471 uint8_t scan_types[2]; 6472 uint16_t scan_intervals[2]; 6473 uint16_t scan_windows[2]; 6474 6475 uint8_t i; 6476 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6477 for (i=0;i<num_phys;i++){ 6478 scan_types[i] = hci_stack->le_scan_type; 6479 scan_intervals[i] = hci_stack->le_scan_interval; 6480 scan_windows[i] = hci_stack->le_scan_window; 6481 } 6482 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6483 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6484 } else 6485 #endif 6486 { 6487 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6488 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6489 } 6490 return true; 6491 } 6492 #endif 6493 6494 #ifdef ENABLE_LE_PERIPHERAL 6495 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6496 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6497 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6498 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6499 if (hci_le_extended_advertising_supported()){ 6500 // map advertisment type to advertising event properties 6501 uint16_t adv_event_properties = 0; 6502 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6503 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6504 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6505 } 6506 hci_stack->le_advertising_set_in_current_command = 0; 6507 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6508 0, 6509 adv_event_properties, 6510 hci_stack->le_advertisements_interval_min, 6511 hci_stack->le_advertisements_interval_max, 6512 hci_stack->le_advertisements_channel_map, 6513 hci_stack->le_advertisements_own_addr_type, 6514 hci_stack->le_advertisements_direct_address_type, 6515 hci_stack->le_advertisements_direct_address, 6516 hci_stack->le_advertisements_filter_policy, 6517 0x7f, // tx power: no preference 6518 0x01, // primary adv phy: LE 1M 6519 0, // secondary adv max skip 6520 0x01, // secondary adv phy 6521 0, // adv sid 6522 0 // scan request notification 6523 ); 6524 } else 6525 #endif 6526 { 6527 hci_send_cmd(&hci_le_set_advertising_parameters, 6528 hci_stack->le_advertisements_interval_min, 6529 hci_stack->le_advertisements_interval_max, 6530 hci_stack->le_advertisements_type, 6531 hci_stack->le_advertisements_own_addr_type, 6532 hci_stack->le_advertisements_direct_address_type, 6533 hci_stack->le_advertisements_direct_address, 6534 hci_stack->le_advertisements_channel_map, 6535 hci_stack->le_advertisements_filter_policy); 6536 } 6537 return true; 6538 } 6539 6540 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6541 // assumption: only set if extended advertising is supported 6542 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6543 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6544 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6545 return true; 6546 } 6547 #endif 6548 6549 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6550 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6551 uint8_t adv_data_clean[31]; 6552 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6553 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6554 hci_stack->le_advertisements_data_len); 6555 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6556 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6557 if (hci_le_extended_advertising_supported()){ 6558 hci_stack->le_advertising_set_in_current_command = 0; 6559 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6560 } else 6561 #endif 6562 { 6563 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6564 } 6565 return true; 6566 } 6567 6568 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6569 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6570 uint8_t scan_data_clean[31]; 6571 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6572 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6573 hci_stack->le_scan_response_data_len); 6574 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6575 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6576 if (hci_le_extended_advertising_supported()){ 6577 hci_stack->le_advertising_set_in_current_command = 0; 6578 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6579 } else 6580 #endif 6581 { 6582 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6583 } 6584 return true; 6585 } 6586 6587 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6588 if (hci_le_extended_advertising_supported()) { 6589 btstack_linked_list_iterator_t it; 6590 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6591 while (btstack_linked_list_iterator_has_next(&it)){ 6592 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6593 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6594 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6595 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6596 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6597 return true; 6598 } 6599 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6600 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6601 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6602 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6603 advertising_set->advertising_handle, 6604 advertising_set->extended_params.advertising_event_properties, 6605 advertising_set->extended_params.primary_advertising_interval_min, 6606 advertising_set->extended_params.primary_advertising_interval_max, 6607 advertising_set->extended_params.primary_advertising_channel_map, 6608 advertising_set->extended_params.own_address_type, 6609 advertising_set->extended_params.peer_address_type, 6610 advertising_set->extended_params.peer_address, 6611 advertising_set->extended_params.advertising_filter_policy, 6612 advertising_set->extended_params.advertising_tx_power, 6613 advertising_set->extended_params.primary_advertising_phy, 6614 advertising_set->extended_params.secondary_advertising_max_skip, 6615 advertising_set->extended_params.secondary_advertising_phy, 6616 advertising_set->extended_params.advertising_sid, 6617 advertising_set->extended_params.scan_request_notification_enable 6618 ); 6619 return true; 6620 } 6621 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6622 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6623 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6624 return true; 6625 } 6626 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6627 uint16_t pos = advertising_set->adv_data_pos; 6628 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6629 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6630 if ((operation & 0x02) != 0){ 6631 // last fragment or complete data 6632 operation |= 2; 6633 advertising_set->adv_data_pos = 0; 6634 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6635 } else { 6636 advertising_set->adv_data_pos += data_to_upload; 6637 } 6638 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6639 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6640 return true; 6641 } 6642 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6643 uint16_t pos = advertising_set->scan_data_pos; 6644 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6645 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6646 if ((operation & 0x02) != 0){ 6647 advertising_set->scan_data_pos = 0; 6648 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6649 } else { 6650 advertising_set->scan_data_pos += data_to_upload; 6651 } 6652 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6653 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6654 return true; 6655 } 6656 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6657 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6658 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6659 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6660 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6661 advertising_set->advertising_handle, 6662 advertising_set->periodic_params.periodic_advertising_interval_min, 6663 advertising_set->periodic_params.periodic_advertising_interval_max, 6664 advertising_set->periodic_params.periodic_advertising_properties); 6665 return true; 6666 } 6667 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6668 uint16_t pos = advertising_set->periodic_data_pos; 6669 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6670 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6671 if ((operation & 0x02) != 0){ 6672 // last fragment or complete data 6673 operation |= 2; 6674 advertising_set->periodic_data_pos = 0; 6675 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6676 } else { 6677 advertising_set->periodic_data_pos += data_to_upload; 6678 } 6679 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6680 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6681 return true; 6682 } 6683 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6684 } 6685 } 6686 #endif 6687 6688 #endif 6689 6690 #ifdef ENABLE_LE_CENTRAL 6691 // if connect with whitelist was active and is not cancelled yet, wait until next time 6692 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6693 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6694 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6695 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6696 #endif 6697 #endif 6698 6699 // LE Whitelist Management 6700 if (whitelist_modification_pending){ 6701 bool done = hci_whitelist_modification_process(); 6702 if (done) return true; 6703 } 6704 6705 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6706 // LE Resolving List Management 6707 if (resolving_list_modification_pending) { 6708 uint16_t i; 6709 uint8_t null_16[16]; 6710 uint8_t local_irk_flipped[16]; 6711 const uint8_t *local_irk; 6712 switch (hci_stack->le_resolving_list_state) { 6713 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6714 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6715 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6716 return true; 6717 case LE_RESOLVING_LIST_READ_SIZE: 6718 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6719 hci_send_cmd(&hci_le_read_resolving_list_size); 6720 return true; 6721 case LE_RESOLVING_LIST_SEND_CLEAR: 6722 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6723 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6724 sizeof(hci_stack->le_resolving_list_add_entries)); 6725 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6726 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6727 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6728 sizeof(hci_stack->le_resolving_list_remove_entries)); 6729 hci_send_cmd(&hci_le_clear_resolving_list); 6730 return true; 6731 case LE_RESOLVING_LIST_SET_IRK: 6732 // set IRK used by RPA for undirected advertising 6733 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6734 local_irk = gap_get_persistent_irk(); 6735 reverse_128(local_irk, local_irk_flipped); 6736 memset(null_16, 0, sizeof(null_16)); 6737 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6738 null_16, local_irk_flipped); 6739 return true; 6740 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6741 // first remove old entries 6742 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6743 uint8_t offset = i >> 3; 6744 uint8_t mask = 1 << (i & 7); 6745 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6746 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6747 bd_addr_t peer_identity_addreses; 6748 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6749 sm_key_t peer_irk; 6750 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6751 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6752 6753 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6754 // trigger whitelist entry 'update' (work around for controller bug) 6755 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6756 while (btstack_linked_list_iterator_has_next(&lit)) { 6757 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6758 if (entry->address_type != peer_identity_addr_type) continue; 6759 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6760 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6761 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6762 } 6763 #endif 6764 6765 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6766 peer_identity_addreses); 6767 return true; 6768 } 6769 6770 // then add new entries 6771 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6772 uint8_t offset = i >> 3; 6773 uint8_t mask = 1 << (i & 7); 6774 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6775 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6776 bd_addr_t peer_identity_addreses; 6777 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6778 sm_key_t peer_irk; 6779 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6780 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6781 if (btstack_is_null(peer_irk, 16)) continue; 6782 local_irk = gap_get_persistent_irk(); 6783 // command uses format specifier 'P' that stores 16-byte value without flip 6784 uint8_t peer_irk_flipped[16]; 6785 reverse_128(local_irk, local_irk_flipped); 6786 reverse_128(peer_irk, peer_irk_flipped); 6787 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6788 peer_irk_flipped, local_irk_flipped); 6789 return true; 6790 } 6791 6792 // finally, set privacy mode 6793 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6794 uint8_t offset = i >> 3; 6795 uint8_t mask = 1 << (i & 7); 6796 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6797 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6798 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6799 // Network Privacy Mode is default 6800 continue; 6801 } 6802 bd_addr_t peer_identity_address; 6803 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6804 sm_key_t peer_irk; 6805 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6806 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6807 if (btstack_is_null(peer_irk, 16)) continue; 6808 // command uses format specifier 'P' that stores 16-byte value without flip 6809 uint8_t peer_irk_flipped[16]; 6810 reverse_128(peer_irk, peer_irk_flipped); 6811 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6812 return true; 6813 } 6814 break; 6815 6816 default: 6817 break; 6818 } 6819 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6820 } 6821 #endif 6822 6823 #ifdef ENABLE_LE_CENTRAL 6824 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6825 // LE Whitelist Management 6826 if (periodic_list_modification_pending){ 6827 // add/remove entries 6828 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6829 while (btstack_linked_list_iterator_has_next(&lit)){ 6830 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6831 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6832 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6833 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6834 return true; 6835 } 6836 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6837 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6838 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6839 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6840 return true; 6841 } 6842 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6843 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6844 btstack_memory_periodic_advertiser_list_entry_free(entry); 6845 } 6846 } 6847 } 6848 #endif 6849 #endif 6850 6851 #ifdef ENABLE_LE_CENTRAL 6852 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6853 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6854 if (hci_stack->le_past_set_default_params){ 6855 hci_stack->le_past_set_default_params = false; 6856 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6857 hci_stack->le_past_mode, 6858 hci_stack->le_past_skip, 6859 hci_stack->le_past_sync_timeout, 6860 hci_stack->le_past_cte_type); 6861 return true; 6862 } 6863 #endif 6864 #endif 6865 #endif 6866 6867 // post-pone all actions until stack is fully working 6868 if (hci_stack->state != HCI_STATE_WORKING) return false; 6869 6870 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6871 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6872 6873 // Phase 4: restore state 6874 6875 #ifdef ENABLE_LE_CENTRAL 6876 // re-start scanning 6877 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6878 hci_stack->le_scanning_active = true; 6879 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6880 if (hci_le_extended_advertising_supported()){ 6881 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6882 } else 6883 #endif 6884 { 6885 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6886 } 6887 return true; 6888 } 6889 #endif 6890 6891 #ifdef ENABLE_LE_CENTRAL 6892 // re-start connecting 6893 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6894 bd_addr_t null_addr; 6895 memset(null_addr, 0, 6); 6896 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6897 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6898 hci_send_le_create_connection(1, 0, null_addr); 6899 return true; 6900 } 6901 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6902 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6903 switch(hci_stack->le_periodic_sync_request){ 6904 case LE_CONNECTING_DIRECT: 6905 case LE_CONNECTING_WHITELIST: 6906 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6907 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6908 hci_stack->le_periodic_sync_options, 6909 hci_stack->le_periodic_sync_advertising_sid, 6910 hci_stack->le_periodic_sync_advertiser_address_type, 6911 hci_stack->le_periodic_sync_advertiser_address, 6912 hci_stack->le_periodic_sync_skip, 6913 hci_stack->le_periodic_sync_timeout, 6914 hci_stack->le_periodic_sync_cte_type); 6915 return true; 6916 default: 6917 break; 6918 } 6919 } 6920 #endif 6921 #endif 6922 6923 #ifdef ENABLE_LE_PERIPHERAL 6924 // re-start advertising 6925 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6926 // check if advertisements should be enabled given 6927 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6928 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6929 6930 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6931 if (hci_le_extended_advertising_supported()){ 6932 const uint8_t advertising_handles[] = { 0 }; 6933 const uint16_t durations[] = { 0 }; 6934 const uint16_t max_events[] = { 0 }; 6935 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6936 } else 6937 #endif 6938 { 6939 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6940 } 6941 return true; 6942 } 6943 6944 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6945 if (hci_le_extended_advertising_supported()) { 6946 btstack_linked_list_iterator_t it; 6947 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6948 while (btstack_linked_list_iterator_has_next(&it)) { 6949 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6950 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6951 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6952 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6953 const uint16_t durations[] = { advertising_set->enable_timeout }; 6954 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6955 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6956 return true; 6957 } 6958 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6959 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6960 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6961 uint8_t enable = 1; 6962 if (advertising_set->periodic_include_adi){ 6963 enable |= 2; 6964 } 6965 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6966 return true; 6967 } 6968 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6969 } 6970 } 6971 #endif 6972 #endif 6973 6974 return false; 6975 } 6976 6977 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6978 static bool hci_run_iso_tasks(void){ 6979 btstack_linked_list_iterator_t it; 6980 6981 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6982 return false; 6983 } 6984 6985 // BIG 6986 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6987 while (btstack_linked_list_iterator_has_next(&it)){ 6988 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6989 switch (big->state){ 6990 case LE_AUDIO_BIG_STATE_CREATE: 6991 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6992 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6993 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6994 hci_send_cmd(&hci_le_create_big, 6995 big->params->big_handle, 6996 big->params->advertising_handle, 6997 big->params->num_bis, 6998 big->params->sdu_interval_us, 6999 big->params->max_sdu, 7000 big->params->max_transport_latency_ms, 7001 big->params->rtn, 7002 big->params->phy, 7003 big->params->packing, 7004 big->params->framing, 7005 big->params->encryption, 7006 big->params->broadcast_code); 7007 return true; 7008 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7009 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7010 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); 7011 return true; 7012 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7013 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7014 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 7015 return true; 7016 case LE_AUDIO_BIG_STATE_TERMINATE: 7017 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7018 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7019 return true; 7020 default: 7021 break; 7022 } 7023 } 7024 7025 // BIG Sync 7026 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 7027 while (btstack_linked_list_iterator_has_next(&it)){ 7028 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 7029 switch (big_sync->state){ 7030 case LE_AUDIO_BIG_STATE_CREATE: 7031 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 7032 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7033 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7034 hci_send_cmd(&hci_le_big_create_sync, 7035 big_sync->params->big_handle, 7036 big_sync->params->sync_handle, 7037 big_sync->params->encryption, 7038 big_sync->params->broadcast_code, 7039 big_sync->params->mse, 7040 big_sync->params->big_sync_timeout_10ms, 7041 big_sync->params->num_bis, 7042 big_sync->params->bis_indices); 7043 return true; 7044 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7045 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7046 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); 7047 return true; 7048 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7049 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7050 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7051 return true; 7052 case LE_AUDIO_BIG_STATE_TERMINATE: 7053 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7054 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7055 return true; 7056 default: 7057 break; 7058 } 7059 } 7060 7061 // CIG 7062 bool cig_active; 7063 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7064 while (btstack_linked_list_iterator_has_next(&it)) { 7065 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7066 uint8_t i; 7067 // Set CIG Parameters 7068 uint8_t cis_id[MAX_NR_CIS]; 7069 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7070 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7071 uint8_t phy_c_to_p[MAX_NR_CIS]; 7072 uint8_t phy_p_to_c[MAX_NR_CIS]; 7073 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7074 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7075 switch (cig->state) { 7076 case LE_AUDIO_CIG_STATE_CREATE: 7077 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7078 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7079 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7080 le_audio_cig_params_t * params = cig->params; 7081 for (i = 0; i < params->num_cis; i++) { 7082 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7083 cis_id[i] = cis_params->cis_id; 7084 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7085 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7086 phy_c_to_p[i] = cis_params->phy_c_to_p; 7087 phy_p_to_c[i] = cis_params->phy_p_to_c; 7088 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7089 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7090 } 7091 hci_send_cmd(&hci_le_set_cig_parameters, 7092 cig->cig_id, 7093 params->sdu_interval_c_to_p, 7094 params->sdu_interval_p_to_c, 7095 params->worst_case_sca, 7096 params->packing, 7097 params->framing, 7098 params->max_transport_latency_c_to_p, 7099 params->max_transport_latency_p_to_c, 7100 params->num_cis, 7101 cis_id, 7102 max_sdu_c_to_p, 7103 max_sdu_p_to_c, 7104 phy_c_to_p, 7105 phy_p_to_c, 7106 rtn_c_to_p, 7107 rtn_p_to_c 7108 ); 7109 return true; 7110 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7111 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7112 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7113 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7114 for (i=0;i<cig->num_cis;i++){ 7115 cig->cis_setup_active[i] = true; 7116 } 7117 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7118 return true; 7119 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7120 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7121 // find next path to setup 7122 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7123 if (cig->cis_established[cis_index] == false) { 7124 continue; 7125 } 7126 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7127 bool setup = true; 7128 if (cis_direction == 0){ 7129 // 0 - input - host to controller 7130 // we are central => central to peripheral 7131 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7132 } else { 7133 // 1 - output - controller to host 7134 // we are central => peripheral to central 7135 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7136 } 7137 if (setup){ 7138 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7139 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7140 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7141 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); 7142 return true; 7143 } 7144 cig->state_vars.next_cis++; 7145 } 7146 // emit done 7147 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7148 break; 7149 case LE_AUDIO_CIG_STATE_REMOVE: 7150 // check if CIG Active 7151 cig_active = false; 7152 for (i = 0; i < cig->num_cis; i++) { 7153 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7154 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7155 if (stream != NULL){ 7156 cig_active = true; 7157 break; 7158 } 7159 } 7160 } 7161 if (cig_active == false){ 7162 btstack_linked_list_iterator_remove(&it); 7163 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7164 return true; 7165 } 7166 default: 7167 break; 7168 } 7169 } 7170 7171 // CIS Accept/Reject/Setup ISO Path/Close 7172 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7173 while (btstack_linked_list_iterator_has_next(&it)) { 7174 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7175 hci_con_handle_t con_handle; 7176 switch (iso_stream->state){ 7177 case HCI_ISO_STREAM_W2_ACCEPT: 7178 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7179 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7180 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7181 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7182 return true; 7183 case HCI_ISO_STREAM_W2_REJECT: 7184 con_handle = iso_stream->cis_handle; 7185 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7186 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7187 hci_iso_stream_finalize(iso_stream); 7188 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7189 return true; 7190 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7191 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7192 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7193 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7194 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); 7195 return true; 7196 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7197 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7198 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7199 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7200 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); 7201 return true; 7202 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7203 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7204 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7205 return true; 7206 default: 7207 break; 7208 } 7209 } 7210 7211 return false; 7212 } 7213 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7214 #endif 7215 7216 static bool hci_run_general_pending_commands(void){ 7217 btstack_linked_item_t * it; 7218 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7219 hci_connection_t * connection = (hci_connection_t *) it; 7220 7221 switch(connection->state){ 7222 case SEND_CREATE_CONNECTION: 7223 switch(connection->address_type){ 7224 #ifdef ENABLE_CLASSIC 7225 case BD_ADDR_TYPE_ACL: 7226 log_info("sending hci_create_connection"); 7227 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7228 break; 7229 #endif 7230 default: 7231 #ifdef ENABLE_BLE 7232 #ifdef ENABLE_LE_CENTRAL 7233 log_info("sending hci_le_create_connection"); 7234 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7235 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7236 hci_send_le_create_connection(0, connection->address_type, connection->address); 7237 connection->state = SENT_CREATE_CONNECTION; 7238 #endif 7239 #endif 7240 break; 7241 } 7242 return true; 7243 7244 #ifdef ENABLE_CLASSIC 7245 case RECEIVED_CONNECTION_REQUEST: 7246 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7247 log_info("sending hci_accept_connection_request"); 7248 connection->state = ACCEPTED_CONNECTION_REQUEST; 7249 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7250 return true; 7251 } 7252 break; 7253 #endif 7254 case SEND_DISCONNECT: 7255 connection->state = SENT_DISCONNECT; 7256 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7257 return true; 7258 7259 default: 7260 break; 7261 } 7262 7263 // no further commands if connection is about to get shut down 7264 if (connection->state == SENT_DISCONNECT) continue; 7265 7266 #ifdef ENABLE_CLASSIC 7267 7268 // Handling link key request requires remote supported features 7269 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7270 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7271 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7272 7273 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7274 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7275 if (have_link_key && security_level_sufficient){ 7276 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7277 } else { 7278 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7279 } 7280 return true; 7281 } 7282 7283 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7284 log_info("denying to pin request"); 7285 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7286 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7287 return true; 7288 } 7289 7290 // security assessment requires remote features 7291 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7292 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7293 hci_ssp_assess_security_on_io_cap_request(connection); 7294 // 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 7295 } 7296 7297 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7298 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7299 // set authentication requirements: 7300 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7301 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7302 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7303 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7304 authreq |= 1; 7305 } 7306 bool bonding = hci_stack->bondable; 7307 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7308 // if we have received IO Cap Response, we're in responder role 7309 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7310 if (bonding && !remote_bonding){ 7311 log_info("Remote not bonding, dropping local flag"); 7312 bonding = false; 7313 } 7314 } 7315 if (bonding){ 7316 if (connection->bonding_flags & BONDING_DEDICATED){ 7317 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7318 } else { 7319 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7320 } 7321 } 7322 uint8_t have_oob_data = 0; 7323 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7324 if (connection->classic_oob_c_192 != NULL){ 7325 have_oob_data |= 1; 7326 } 7327 if (connection->classic_oob_c_256 != NULL){ 7328 have_oob_data |= 2; 7329 } 7330 #endif 7331 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7332 return true; 7333 } 7334 7335 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7336 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7337 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7338 return true; 7339 } 7340 7341 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7342 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7343 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7344 const uint8_t zero[16] = { 0 }; 7345 const uint8_t * r_192 = zero; 7346 const uint8_t * c_192 = zero; 7347 const uint8_t * r_256 = zero; 7348 const uint8_t * c_256 = zero; 7349 // verify P-256 OOB 7350 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7351 c_256 = connection->classic_oob_c_256; 7352 if (connection->classic_oob_r_256 != NULL) { 7353 r_256 = connection->classic_oob_r_256; 7354 } 7355 } 7356 // verify P-192 OOB 7357 if ((connection->classic_oob_c_192 != NULL)) { 7358 c_192 = connection->classic_oob_c_192; 7359 if (connection->classic_oob_r_192 != NULL) { 7360 r_192 = connection->classic_oob_r_192; 7361 } 7362 } 7363 7364 // assess security 7365 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7366 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7367 if (need_level_4 && !can_reach_level_4){ 7368 log_info("Level 4 required, but not possible -> abort"); 7369 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7370 // send oob negative reply 7371 c_256 = NULL; 7372 c_192 = NULL; 7373 } 7374 7375 // Reply 7376 if (c_256 != zero) { 7377 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7378 } else if (c_192 != zero){ 7379 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7380 } else { 7381 hci_stack->classic_oob_con_handle = connection->con_handle; 7382 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7383 } 7384 return true; 7385 } 7386 #endif 7387 7388 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7389 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7390 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7391 return true; 7392 } 7393 7394 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7395 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7396 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7397 return true; 7398 } 7399 7400 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7401 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7402 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7403 return true; 7404 } 7405 7406 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7407 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7408 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7409 connection->state = SENT_DISCONNECT; 7410 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7411 return true; 7412 } 7413 7414 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7415 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7416 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7417 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7418 return true; 7419 } 7420 7421 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7422 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7423 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7424 return true; 7425 } 7426 7427 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7428 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7429 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7430 return true; 7431 } 7432 7433 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7434 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7435 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7436 return true; 7437 } 7438 7439 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7440 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7441 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7442 return true; 7443 } 7444 7445 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7446 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7447 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7448 return true; 7449 } 7450 #endif 7451 7452 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7453 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7454 #ifdef ENABLE_CLASSIC 7455 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7456 #endif 7457 if (connection->state != SENT_DISCONNECT){ 7458 connection->state = SENT_DISCONNECT; 7459 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7460 return true; 7461 } 7462 } 7463 7464 #ifdef ENABLE_CLASSIC 7465 uint16_t sniff_min_interval; 7466 switch (connection->sniff_min_interval){ 7467 case 0: 7468 break; 7469 case 0xffff: 7470 connection->sniff_min_interval = 0; 7471 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7472 return true; 7473 default: 7474 sniff_min_interval = connection->sniff_min_interval; 7475 connection->sniff_min_interval = 0; 7476 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7477 return true; 7478 } 7479 7480 if (connection->sniff_subrating_max_latency != 0xffff){ 7481 uint16_t max_latency = connection->sniff_subrating_max_latency; 7482 connection->sniff_subrating_max_latency = 0; 7483 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7484 return true; 7485 } 7486 7487 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7488 uint8_t service_type = (uint8_t) connection->qos_service_type; 7489 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7490 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); 7491 return true; 7492 } 7493 7494 if (connection->request_role != HCI_ROLE_INVALID){ 7495 hci_role_t role = connection->request_role; 7496 connection->request_role = HCI_ROLE_INVALID; 7497 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7498 return true; 7499 } 7500 #endif 7501 7502 if (connection->gap_connection_tasks != 0){ 7503 #ifdef ENABLE_CLASSIC 7504 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7505 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7506 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7507 return true; 7508 } 7509 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7510 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7511 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7512 return true; 7513 } 7514 #endif 7515 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7516 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7517 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7518 return true; 7519 } 7520 #ifdef ENABLE_BLE 7521 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7522 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7523 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7524 return true; 7525 } 7526 #endif 7527 } 7528 7529 #ifdef ENABLE_BLE 7530 switch (connection->le_con_parameter_update_state){ 7531 // response to L2CAP CON PARAMETER UPDATE REQUEST 7532 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7533 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7534 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7535 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7536 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7537 return true; 7538 case CON_PARAMETER_UPDATE_REPLY: 7539 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7540 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7541 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7542 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7543 return true; 7544 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7545 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7546 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7547 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7548 return true; 7549 default: 7550 break; 7551 } 7552 if (connection->le_phy_update_all_phys != 0xffu){ 7553 uint8_t all_phys = connection->le_phy_update_all_phys; 7554 connection->le_phy_update_all_phys = 0xff; 7555 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); 7556 return true; 7557 } 7558 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7559 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7560 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7561 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7562 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7563 return true; 7564 } 7565 if (connection->le_past_advertising_handle != 0xff){ 7566 uint8_t advertising_handle = connection->le_past_advertising_handle; 7567 connection->le_past_advertising_handle = 0xff; 7568 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7569 return true; 7570 } 7571 #endif 7572 #endif 7573 } 7574 return false; 7575 } 7576 7577 static void hci_run(void){ 7578 7579 // stack state sub statemachines 7580 switch (hci_stack->state) { 7581 case HCI_STATE_INITIALIZING: 7582 hci_initializing_run(); 7583 break; 7584 case HCI_STATE_HALTING: 7585 hci_halting_run(); 7586 break; 7587 case HCI_STATE_FALLING_ASLEEP: 7588 hci_falling_asleep_run(); 7589 break; 7590 default: 7591 break; 7592 } 7593 7594 // allow to run after initialization to working transition 7595 if (hci_stack->state != HCI_STATE_WORKING){ 7596 return; 7597 } 7598 7599 bool done; 7600 7601 // send continuation fragments first, as they block the prepared packet buffer 7602 done = hci_run_acl_fragments(); 7603 if (done) return; 7604 7605 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7606 done = hci_run_iso_fragments(); 7607 if (done) return; 7608 #endif 7609 7610 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7611 // send host num completed packets next as they don't require num_cmd_packets > 0 7612 if (!hci_can_send_comand_packet_transport()) return; 7613 if (hci_stack->host_completed_packets){ 7614 hci_host_num_completed_packets(); 7615 return; 7616 } 7617 #endif 7618 7619 if (!hci_can_send_command_packet_now()) return; 7620 7621 // global/non-connection oriented commands 7622 7623 7624 #ifdef ENABLE_CLASSIC 7625 // general gap classic 7626 done = hci_run_general_gap_classic(); 7627 if (done) return; 7628 #endif 7629 7630 #ifdef ENABLE_BLE 7631 // general gap le 7632 done = hci_run_general_gap_le(); 7633 if (done) return; 7634 7635 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7636 // ISO related tasks, e.g. BIG create/terminate/sync 7637 done = hci_run_iso_tasks(); 7638 if (done) return; 7639 #endif 7640 #endif 7641 7642 // send pending HCI commands 7643 hci_run_general_pending_commands(); 7644 } 7645 7646 #ifdef ENABLE_CLASSIC 7647 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7648 // bits 6-9 are 'don't use' 7649 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7650 7651 // restrict packet types to local and remote supported 7652 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7653 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7654 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7655 } 7656 #endif 7657 7658 // funnel for sending cmd packet using single outgoing buffer 7659 static uint8_t hci_send_prepared_cmd_packet(void) { 7660 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7661 // cache opcode 7662 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 7663 // get size 7664 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7665 // send packet 7666 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7667 // release packet buffer on error or for synchronous transport implementations 7668 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7669 hci_release_packet_buffer(); 7670 } 7671 return status; 7672 } 7673 7674 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7675 // house-keeping 7676 7677 #ifdef ENABLE_CLASSIC 7678 bd_addr_t addr; 7679 hci_connection_t * conn; 7680 #endif 7681 #ifdef ENABLE_LE_CENTRAL 7682 uint8_t initiator_filter_policy; 7683 #endif 7684 7685 uint16_t opcode = little_endian_read_16(packet, 0); 7686 switch (opcode) { 7687 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7688 hci_stack->loopback_mode = packet[3]; 7689 break; 7690 7691 #ifdef ENABLE_CLASSIC 7692 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7693 reverse_bd_addr(&packet[3], addr); 7694 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7695 7696 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7697 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7698 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7699 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7700 } 7701 7702 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7703 if (!conn) { 7704 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7705 if (!conn) { 7706 // notify client that alloc failed 7707 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7708 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7709 } 7710 conn->state = SEND_CREATE_CONNECTION; 7711 } 7712 7713 log_info("conn state %u", conn->state); 7714 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7715 switch (conn->state) { 7716 // if connection active exists 7717 case OPEN: 7718 // and OPEN, emit connection complete command 7719 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7720 // packet not sent to controller 7721 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7722 case RECEIVED_DISCONNECTION_COMPLETE: 7723 // create connection triggered in disconnect complete event, let's do it now 7724 break; 7725 case SEND_CREATE_CONNECTION: 7726 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7727 if (hci_classic_operation_active()){ 7728 return ERROR_CODE_SUCCESS; 7729 } 7730 #endif 7731 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7732 break; 7733 default: 7734 // otherwise, just ignore as it is already in the open process 7735 // packet not sent to controller 7736 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7737 } 7738 conn->state = SENT_CREATE_CONNECTION; 7739 7740 // track outgoing connection 7741 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7742 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7743 break; 7744 7745 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7746 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7747 if (conn == NULL) { 7748 // neither SCO nor ACL connection for con handle 7749 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7750 } else { 7751 uint16_t remote_supported_sco_packets; 7752 switch (conn->address_type){ 7753 case BD_ADDR_TYPE_ACL: 7754 // assert SCO connection does not exit 7755 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7756 return ERROR_CODE_COMMAND_DISALLOWED; 7757 } 7758 // cache remote sco packet types 7759 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7760 7761 // allocate connection struct 7762 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7763 HCI_ROLE_MASTER); 7764 if (!conn) { 7765 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7766 } 7767 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7768 break; 7769 case BD_ADDR_TYPE_SCO: 7770 // update of existing SCO connection 7771 break; 7772 default: 7773 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7774 } 7775 } 7776 7777 // conn refers to hci connection of type sco now 7778 7779 conn->state = SENT_CREATE_CONNECTION; 7780 7781 // track outgoing connection to handle command status with error 7782 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7783 (void) memcpy(hci_stack->outgoing_addr, conn->address, 6); 7784 7785 // setup_synchronous_connection? Voice setting at offset 22 7786 // TODO: compare to current setting if sco connection already active 7787 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7788 7789 // derive sco payload length from packet types 7790 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7791 break; 7792 7793 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7794 // get SCO connection 7795 reverse_bd_addr(&packet[3], addr); 7796 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7797 if (conn == NULL){ 7798 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7799 } 7800 7801 conn->state = ACCEPTED_CONNECTION_REQUEST; 7802 7803 // track outgoing connection to handle command status with error 7804 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7805 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7806 7807 // accept_synchronous_connection? Voice setting at offset 18 7808 // TODO: compare to current setting if sco connection already active 7809 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7810 7811 // derive sco payload length from packet types 7812 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7813 break; 7814 #endif 7815 7816 #ifdef ENABLE_BLE 7817 #ifdef ENABLE_LE_CENTRAL 7818 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7819 // white list used? 7820 initiator_filter_policy = packet[7]; 7821 switch (initiator_filter_policy) { 7822 case 0: 7823 // whitelist not used 7824 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7825 break; 7826 case 1: 7827 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7828 break; 7829 default: 7830 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7831 break; 7832 } 7833 // track outgoing connection 7834 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7835 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7836 break; 7837 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7838 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7839 // white list used? 7840 initiator_filter_policy = packet[3]; 7841 switch (initiator_filter_policy) { 7842 case 0: 7843 // whitelist not used 7844 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7845 break; 7846 case 1: 7847 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7848 break; 7849 default: 7850 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7851 break; 7852 } 7853 // track outgoing connection 7854 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7855 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7856 break; 7857 #endif 7858 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7859 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7860 break; 7861 #endif 7862 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7863 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7864 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7865 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7866 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7867 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7868 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7869 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7870 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7871 case HCI_OPCODE_HCI_LE_READ_PHY: 7872 case HCI_OPCODE_HCI_LE_SET_PHY: 7873 // conection handle is first command parameter 7874 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7875 break; 7876 #endif 7877 #endif /* ENABLE_BLE */ 7878 default: 7879 break; 7880 } 7881 7882 hci_stack->num_cmd_packets--; 7883 7884 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7885 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7886 uint8_t status; 7887 if (err == 0){ 7888 status = ERROR_CODE_SUCCESS; 7889 } else { 7890 status = ERROR_CODE_HARDWARE_FAILURE; 7891 } 7892 return status; 7893 } 7894 7895 // disconnect because of security block 7896 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7897 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7898 if (!connection) return; 7899 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7900 } 7901 7902 7903 // Configure Secure Simple Pairing 7904 7905 #ifdef ENABLE_CLASSIC 7906 7907 // enable will enable SSP during init 7908 void gap_ssp_set_enable(int enable){ 7909 hci_stack->ssp_enable = enable; 7910 } 7911 7912 static int hci_local_ssp_activated(void){ 7913 return gap_ssp_supported() && hci_stack->ssp_enable; 7914 } 7915 7916 // if set, BTstack will respond to io capability request using authentication requirement 7917 void gap_ssp_set_io_capability(int io_capability){ 7918 hci_stack->ssp_io_capability = io_capability; 7919 } 7920 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7921 hci_stack->ssp_authentication_requirement = authentication_requirement; 7922 } 7923 7924 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7925 void gap_ssp_set_auto_accept(int auto_accept){ 7926 hci_stack->ssp_auto_accept = auto_accept; 7927 } 7928 7929 void gap_secure_connections_enable(bool enable){ 7930 hci_stack->secure_connections_enable = enable; 7931 } 7932 bool gap_secure_connections_active(void){ 7933 return hci_stack->secure_connections_active; 7934 } 7935 7936 #endif 7937 7938 // va_list part of hci_send_cmd 7939 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7940 if (!hci_can_send_command_packet_now()){ 7941 log_error("hci_send_cmd called but cannot send packet now"); 7942 return ERROR_CODE_COMMAND_DISALLOWED; 7943 } 7944 7945 hci_reserve_packet_buffer(); 7946 hci_cmd_create_from_template(hci_stack->hci_packet_buffer, cmd, argptr); 7947 return hci_send_prepared_cmd_packet(); 7948 } 7949 7950 /** 7951 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7952 */ 7953 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7954 va_list argptr; 7955 va_start(argptr, cmd); 7956 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7957 va_end(argptr); 7958 return status; 7959 } 7960 7961 // Forward HCI events and create non-HCI events 7962 7963 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7964 // dump packet 7965 if (dump) { 7966 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7967 } 7968 7969 // dispatch to all event handlers 7970 btstack_linked_list_iterator_t it; 7971 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7972 while (btstack_linked_list_iterator_has_next(&it)){ 7973 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7974 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7975 } 7976 } 7977 7978 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump){ 7979 #ifndef ENABLE_LOG_BTSTACK_EVENTS 7980 dump = 0; 7981 #endif 7982 hci_emit_event(event, size, dump); 7983 } 7984 7985 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7986 if (!hci_stack->acl_packet_handler) return; 7987 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7988 } 7989 7990 #ifdef ENABLE_CLASSIC 7991 static void hci_notify_if_sco_can_send_now(void){ 7992 // notify SCO sender if waiting 7993 if (!hci_stack->sco_waiting_for_can_send_now) return; 7994 if (hci_can_send_sco_packet_now()){ 7995 hci_stack->sco_waiting_for_can_send_now = 0; 7996 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7997 hci_dump_btstack_event(event, sizeof(event)); 7998 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7999 } 8000 } 8001 8002 // parsing end emitting has been merged to reduce code size 8003 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 8004 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 8005 8006 uint8_t * eir_data; 8007 ad_context_t context; 8008 const uint8_t * name; 8009 uint8_t name_len; 8010 8011 if (size < 3) return; 8012 8013 int event_type = hci_event_packet_get_type(packet); 8014 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 8015 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 8016 8017 switch (event_type){ 8018 case HCI_EVENT_INQUIRY_RESULT: 8019 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8020 if (size != (3 + (num_responses * 14))) return; 8021 break; 8022 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8023 if (size != 257) return; 8024 if (num_responses != 1) return; 8025 break; 8026 default: 8027 return; 8028 } 8029 8030 // event[1] is set at the end 8031 int i; 8032 for (i=0; i<num_responses;i++){ 8033 memset(event, 0, sizeof(event)); 8034 event[0] = GAP_EVENT_INQUIRY_RESULT; 8035 uint8_t event_size = 27; // if name is not set by EIR 8036 8037 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 8038 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 8039 (void)memcpy(&event[9], 8040 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 8041 3); // class of device 8042 (void)memcpy(&event[12], 8043 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 8044 2); // clock offset 8045 8046 switch (event_type){ 8047 case HCI_EVENT_INQUIRY_RESULT: 8048 // 14,15,16,17 = 0, size 18 8049 break; 8050 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8051 event[14] = 1; 8052 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8053 // 16,17 = 0, size 18 8054 break; 8055 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8056 event[14] = 1; 8057 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8058 // EIR packets only contain a single inquiry response 8059 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 8060 name = NULL; 8061 // Iterate over EIR data 8062 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 8063 uint8_t data_type = ad_iterator_get_data_type(&context); 8064 uint8_t data_size = ad_iterator_get_data_len(&context); 8065 const uint8_t * data = ad_iterator_get_data(&context); 8066 // Prefer Complete Local Name over Shortened Local Name 8067 switch (data_type){ 8068 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 8069 if (name) continue; 8070 /* fall through */ 8071 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 8072 name = data; 8073 name_len = data_size; 8074 break; 8075 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8076 if (data_size != 8) break; 8077 event[16] = 1; 8078 memcpy(&event[17], data, 8); 8079 break; 8080 default: 8081 break; 8082 } 8083 } 8084 if (name){ 8085 event[25] = 1; 8086 // truncate name if needed 8087 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8088 event[26] = len; 8089 (void)memcpy(&event[27], name, len); 8090 event_size += len; 8091 } 8092 break; 8093 default: 8094 return; 8095 } 8096 event[1] = event_size - 2; 8097 hci_emit_btstack_event(event, event_size, 1); 8098 } 8099 } 8100 #endif 8101 8102 void hci_emit_state(void){ 8103 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8104 uint8_t event[3]; 8105 event[0] = BTSTACK_EVENT_STATE; 8106 event[1] = sizeof(event) - 2u; 8107 event[2] = hci_stack->state; 8108 hci_emit_btstack_event(event, sizeof(event), 1); 8109 } 8110 8111 #ifdef ENABLE_CLASSIC 8112 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8113 uint8_t event[13]; 8114 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8115 event[1] = sizeof(event) - 2; 8116 event[2] = status; 8117 little_endian_store_16(event, 3, con_handle); 8118 reverse_bd_addr(address, &event[5]); 8119 event[11] = 1; // ACL connection 8120 event[12] = 0; // encryption disabled 8121 hci_emit_btstack_event(event, sizeof(event), 1); 8122 } 8123 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8124 if (disable_l2cap_timeouts) return; 8125 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8126 uint8_t event[4]; 8127 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8128 event[1] = sizeof(event) - 2; 8129 little_endian_store_16(event, 2, conn->con_handle); 8130 hci_emit_btstack_event(event, sizeof(event), 1); 8131 } 8132 #endif 8133 8134 #ifdef ENABLE_BLE 8135 #ifdef ENABLE_LE_CENTRAL 8136 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){ 8137 uint8_t hci_event[21]; 8138 hci_event[0] = HCI_EVENT_LE_META; 8139 hci_event[1] = sizeof(hci_event) - 2u; 8140 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8141 hci_event[3] = status; 8142 little_endian_store_16(hci_event, 4, con_handle); 8143 hci_event[6] = 0; // TODO: role 8144 hci_event[7] = address_type; 8145 reverse_bd_addr(address, &hci_event[8]); 8146 little_endian_store_16(hci_event, 14, 0); // interval 8147 little_endian_store_16(hci_event, 16, 0); // latency 8148 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8149 hci_event[20] = 0; // master clock accuracy 8150 hci_emit_btstack_event(hci_event, sizeof(hci_event), 1); 8151 // emit GAP event, too 8152 uint8_t gap_event[36]; 8153 hci_create_gap_connection_complete_event(hci_event, gap_event); 8154 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 8155 } 8156 #endif 8157 #endif 8158 8159 static void hci_emit_transport_packet_sent(void){ 8160 // notify upper stack that it might be possible to send again 8161 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8162 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 8163 } 8164 8165 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8166 uint8_t event[6]; 8167 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8168 event[1] = sizeof(event) - 2u; 8169 event[2] = 0; // status = OK 8170 little_endian_store_16(event, 3, con_handle); 8171 event[5] = reason; 8172 hci_emit_btstack_event(event, sizeof(event), 1); 8173 } 8174 8175 static void hci_emit_nr_connections_changed(void){ 8176 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8177 uint8_t event[3]; 8178 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8179 event[1] = sizeof(event) - 2u; 8180 event[2] = nr_hci_connections(); 8181 hci_emit_btstack_event(event, sizeof(event), 1); 8182 } 8183 8184 static void hci_emit_hci_open_failed(void){ 8185 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8186 uint8_t event[2]; 8187 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8188 event[1] = sizeof(event) - 2u; 8189 hci_emit_btstack_event(event, sizeof(event), 1); 8190 } 8191 8192 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8193 log_info("hci_emit_dedicated_bonding_result %u ", status); 8194 uint8_t event[9]; 8195 int pos = 0; 8196 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8197 event[pos++] = sizeof(event) - 2u; 8198 event[pos++] = status; 8199 reverse_bd_addr(address, &event[pos]); 8200 hci_emit_btstack_event(event, sizeof(event), 1); 8201 } 8202 8203 8204 #ifdef ENABLE_CLASSIC 8205 8206 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8207 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8208 uint8_t event[5]; 8209 int pos = 0; 8210 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8211 event[pos++] = sizeof(event) - 2; 8212 little_endian_store_16(event, 2, con_handle); 8213 pos += 2; 8214 event[pos++] = level; 8215 hci_emit_btstack_event(event, sizeof(event), 1); 8216 } 8217 8218 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8219 if (!connection) return LEVEL_0; 8220 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8221 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8222 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8223 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8224 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8225 // LEVEL 4 always requires 128 bit encrytion key size 8226 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8227 security_level = LEVEL_3; 8228 } 8229 return security_level; 8230 } 8231 8232 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8233 uint8_t event[4]; 8234 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8235 event[1] = sizeof(event) - 2; 8236 event[2] = discoverable; 8237 event[3] = connectable; 8238 hci_emit_btstack_event(event, sizeof(event), 1); 8239 } 8240 8241 // query if remote side supports eSCO 8242 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8243 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8244 if (!connection) return false; 8245 return (connection->remote_supported_features[0] & 1) != 0; 8246 } 8247 8248 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8249 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8250 if (!connection) return 0; 8251 return connection->remote_supported_sco_packets; 8252 } 8253 8254 static bool hci_ssp_supported(hci_connection_t * connection){ 8255 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8256 return (connection->bonding_flags & mask) == mask; 8257 } 8258 8259 // query if remote side supports SSP 8260 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8261 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8262 if (!connection) return false; 8263 return hci_ssp_supported(connection) ? 1 : 0; 8264 } 8265 8266 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8267 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8268 } 8269 8270 /** 8271 * Check if remote supported features query has completed 8272 */ 8273 bool hci_remote_features_available(hci_con_handle_t handle){ 8274 hci_connection_t * connection = hci_connection_for_handle(handle); 8275 if (!connection) return false; 8276 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8277 } 8278 8279 /** 8280 * Trigger remote supported features query 8281 */ 8282 8283 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8284 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8285 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8286 } 8287 } 8288 8289 void hci_remote_features_query(hci_con_handle_t con_handle){ 8290 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8291 if (!connection) return; 8292 hci_trigger_remote_features_for_connection(connection); 8293 hci_run(); 8294 } 8295 8296 // GAP API 8297 /** 8298 * @bbrief enable/disable bonding. default is enabled 8299 * @praram enabled 8300 */ 8301 void gap_set_bondable_mode(int enable){ 8302 hci_stack->bondable = enable ? 1 : 0; 8303 } 8304 /** 8305 * @brief Get bondable mode. 8306 * @return 1 if bondable 8307 */ 8308 int gap_get_bondable_mode(void){ 8309 return hci_stack->bondable; 8310 } 8311 8312 /** 8313 * @brief map link keys to security levels 8314 */ 8315 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8316 switch (link_key_type){ 8317 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8318 return LEVEL_4; 8319 case COMBINATION_KEY: 8320 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8321 return LEVEL_3; 8322 default: 8323 return LEVEL_2; 8324 } 8325 } 8326 8327 /** 8328 * @brief map link keys to secure connection yes/no 8329 */ 8330 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8331 switch (link_key_type){ 8332 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8333 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8334 return true; 8335 default: 8336 return false; 8337 } 8338 } 8339 8340 /** 8341 * @brief map link keys to authenticated 8342 */ 8343 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8344 switch (link_key_type){ 8345 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8346 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8347 return true; 8348 default: 8349 return false; 8350 } 8351 } 8352 8353 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8354 log_info("gap_mitm_protection_required_for_security_level %u", level); 8355 return level > LEVEL_2; 8356 } 8357 8358 /** 8359 * @brief get current security level 8360 */ 8361 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8362 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8363 if (!connection) return LEVEL_0; 8364 return gap_security_level_for_connection(connection); 8365 } 8366 8367 /** 8368 * @brief request connection to device to 8369 * @result GAP_AUTHENTICATION_RESULT 8370 */ 8371 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8372 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8373 if (!connection){ 8374 hci_emit_security_level(con_handle, LEVEL_0); 8375 return; 8376 } 8377 8378 btstack_assert(hci_is_le_connection(connection) == false); 8379 8380 // 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) 8381 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8382 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8383 requested_level = LEVEL_4; 8384 } 8385 8386 gap_security_level_t current_level = gap_security_level(con_handle); 8387 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8388 requested_level, connection->requested_security_level, current_level); 8389 8390 // authentication active if authentication request was sent or planned level > 0 8391 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8392 if (authentication_active){ 8393 // authentication already active 8394 if (connection->requested_security_level < requested_level){ 8395 // increase requested level as new level is higher 8396 // TODO: handle re-authentication when done 8397 connection->requested_security_level = requested_level; 8398 } 8399 } else { 8400 // no request active, notify if security sufficient 8401 if (requested_level <= current_level){ 8402 hci_emit_security_level(con_handle, current_level); 8403 return; 8404 } 8405 8406 // store request 8407 connection->requested_security_level = requested_level; 8408 8409 // start to authenticate connection 8410 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8411 8412 // request remote features if not already active, also trigger hci_run 8413 hci_remote_features_query(con_handle); 8414 } 8415 } 8416 8417 /** 8418 * @brief start dedicated bonding with device. disconnect after bonding 8419 * @param device 8420 * @param request MITM protection 8421 * @result GAP_DEDICATED_BONDING_COMPLETE 8422 */ 8423 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8424 8425 // create connection state machine 8426 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8427 8428 if (!connection){ 8429 return BTSTACK_MEMORY_ALLOC_FAILED; 8430 } 8431 8432 // delete link key 8433 gap_drop_link_key_for_bd_addr(device); 8434 8435 // configure LEVEL_2/3, dedicated bonding 8436 connection->state = SEND_CREATE_CONNECTION; 8437 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8438 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8439 connection->bonding_flags = BONDING_DEDICATED; 8440 8441 hci_run(); 8442 8443 return 0; 8444 } 8445 8446 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8447 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8448 if (connection == NULL){ 8449 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8450 } 8451 if (defer){ 8452 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8453 } else { 8454 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8455 // trigger disconnect 8456 hci_run(); 8457 } 8458 return ERROR_CODE_SUCCESS; 8459 } 8460 8461 void gap_set_local_name(const char * local_name){ 8462 hci_stack->local_name = local_name; 8463 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8464 // also update EIR if not set by user 8465 if (hci_stack->eir_data == NULL){ 8466 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8467 } 8468 hci_run(); 8469 } 8470 #endif 8471 8472 8473 #ifdef ENABLE_BLE 8474 8475 #ifdef ENABLE_LE_CENTRAL 8476 void gap_start_scan(void){ 8477 hci_stack->le_scanning_enabled = true; 8478 hci_run(); 8479 } 8480 8481 void gap_stop_scan(void){ 8482 hci_stack->le_scanning_enabled = false; 8483 hci_run(); 8484 } 8485 8486 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8487 hci_stack->le_scan_type = scan_type; 8488 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8489 hci_stack->le_scan_interval = scan_interval; 8490 hci_stack->le_scan_window = scan_window; 8491 hci_stack->le_scanning_param_update = true; 8492 hci_run(); 8493 } 8494 8495 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8496 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8497 } 8498 8499 void gap_set_scan_duplicate_filter(bool enabled){ 8500 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8501 } 8502 8503 void gap_set_scan_phys(uint8_t phys){ 8504 // LE Coded and LE 1M PHY 8505 hci_stack->le_scan_phys = phys & 0x05; 8506 } 8507 8508 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8509 // disallow le connection if outgoing already active 8510 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8511 log_error("le connect already active"); 8512 return ERROR_CODE_COMMAND_DISALLOWED; 8513 } 8514 8515 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8516 if (conn == NULL) { 8517 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8518 if (conn == NULL){ 8519 // alloc failed 8520 log_info("gap_connect: failed to alloc hci_connection_t"); 8521 return BTSTACK_MEMORY_ALLOC_FAILED; 8522 } 8523 } else { 8524 switch (conn->state) { 8525 case RECEIVED_DISCONNECTION_COMPLETE: 8526 // connection was just disconnected, reset state and allow re-connect 8527 conn->role = HCI_ROLE_MASTER; 8528 break; 8529 default: 8530 return ERROR_CODE_COMMAND_DISALLOWED; 8531 } 8532 } 8533 8534 // set le connecting state 8535 if (hci_is_le_connection_type(addr_type)){ 8536 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8537 } 8538 8539 // trigger connect 8540 log_info("gap_connect: send create connection next"); 8541 conn->state = SEND_CREATE_CONNECTION; 8542 hci_run(); 8543 return ERROR_CODE_SUCCESS; 8544 } 8545 8546 // @assumption: only a single outgoing LE Connection exists 8547 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8548 btstack_linked_item_t *it; 8549 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8550 hci_connection_t * conn = (hci_connection_t *) it; 8551 if (hci_is_le_connection(conn)){ 8552 switch (conn->state){ 8553 case SEND_CREATE_CONNECTION: 8554 case SENT_CREATE_CONNECTION: 8555 return conn; 8556 default: 8557 break; 8558 }; 8559 } 8560 } 8561 return NULL; 8562 } 8563 8564 uint8_t gap_connect_cancel(void){ 8565 hci_connection_t * conn; 8566 switch (hci_stack->le_connecting_request){ 8567 case LE_CONNECTING_IDLE: 8568 break; 8569 case LE_CONNECTING_WHITELIST: 8570 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8571 hci_run(); 8572 break; 8573 case LE_CONNECTING_DIRECT: 8574 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8575 conn = gap_get_outgoing_le_connection(); 8576 if (conn == NULL){ 8577 hci_run(); 8578 } else { 8579 switch (conn->state){ 8580 case SEND_CREATE_CONNECTION: 8581 // skip sending create connection and emit event instead 8582 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8583 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8584 btstack_memory_hci_connection_free( conn ); 8585 break; 8586 case SENT_CREATE_CONNECTION: 8587 // let hci_run_general_gap_le cancel outgoing connection 8588 hci_run(); 8589 break; 8590 default: 8591 break; 8592 } 8593 } 8594 break; 8595 default: 8596 btstack_unreachable(); 8597 break; 8598 } 8599 return ERROR_CODE_SUCCESS; 8600 } 8601 8602 /** 8603 * @brief Set connection parameters for outgoing connections 8604 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8605 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8606 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8607 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8608 * @param conn_latency, default: 4 8609 * @param supervision_timeout (unit: 10ms), default: 720 ms 8610 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8611 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8612 */ 8613 8614 void gap_set_connection_phys(uint8_t phys){ 8615 // LE Coded, LE 1M, LE 2M PHY 8616 hci_stack->le_connection_phys = phys & 7; 8617 } 8618 8619 #endif 8620 8621 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8622 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8623 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8624 hci_stack->le_connection_scan_interval = conn_scan_interval; 8625 hci_stack->le_connection_scan_window = conn_scan_window; 8626 hci_stack->le_connection_interval_min = conn_interval_min; 8627 hci_stack->le_connection_interval_max = conn_interval_max; 8628 hci_stack->le_connection_latency = conn_latency; 8629 hci_stack->le_supervision_timeout = supervision_timeout; 8630 hci_stack->le_minimum_ce_length = min_ce_length; 8631 hci_stack->le_maximum_ce_length = max_ce_length; 8632 } 8633 8634 /** 8635 * @brief Updates the connection parameters for a given LE connection 8636 * @param handle 8637 * @param conn_interval_min (unit: 1.25ms) 8638 * @param conn_interval_max (unit: 1.25ms) 8639 * @param conn_latency 8640 * @param supervision_timeout (unit: 10ms) 8641 * @return 0 if ok 8642 */ 8643 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8644 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8645 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8646 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8647 connection->le_conn_interval_min = conn_interval_min; 8648 connection->le_conn_interval_max = conn_interval_max; 8649 connection->le_conn_latency = conn_latency; 8650 connection->le_supervision_timeout = supervision_timeout; 8651 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8652 hci_run(); 8653 return 0; 8654 } 8655 8656 /** 8657 * @brief Request an update of the connection parameter for a given LE connection 8658 * @param handle 8659 * @param conn_interval_min (unit: 1.25ms) 8660 * @param conn_interval_max (unit: 1.25ms) 8661 * @param conn_latency 8662 * @param supervision_timeout (unit: 10ms) 8663 * @return 0 if ok 8664 */ 8665 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8666 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8667 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8668 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8669 connection->le_conn_interval_min = conn_interval_min; 8670 connection->le_conn_interval_max = conn_interval_max; 8671 connection->le_conn_latency = conn_latency; 8672 connection->le_supervision_timeout = supervision_timeout; 8673 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8674 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8675 hci_emit_btstack_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8676 return 0; 8677 } 8678 8679 #ifdef ENABLE_LE_PERIPHERAL 8680 8681 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8682 static void hci_assert_advertisement_set_0_ready(void){ 8683 // force advertising set creation for legacy LE Advertising 8684 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8685 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8686 } 8687 } 8688 #endif 8689 8690 /** 8691 * @brief Set Advertisement Data 8692 * @param advertising_data_length 8693 * @param advertising_data (max 31 octets) 8694 * @note data is not copied, pointer has to stay valid 8695 */ 8696 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8697 hci_stack->le_advertisements_data_len = advertising_data_length; 8698 hci_stack->le_advertisements_data = advertising_data; 8699 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8700 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8701 hci_assert_advertisement_set_0_ready(); 8702 #endif 8703 hci_run(); 8704 } 8705 8706 /** 8707 * @brief Set Scan Response Data 8708 * @param advertising_data_length 8709 * @param advertising_data (max 31 octets) 8710 * @note data is not copied, pointer has to stay valid 8711 */ 8712 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8713 hci_stack->le_scan_response_data_len = scan_response_data_length; 8714 hci_stack->le_scan_response_data = scan_response_data; 8715 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8716 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8717 hci_assert_advertisement_set_0_ready(); 8718 #endif 8719 hci_run(); 8720 } 8721 8722 /** 8723 * @brief Set Advertisement Parameters 8724 * @param adv_int_min 8725 * @param adv_int_max 8726 * @param adv_type 8727 * @param direct_address_type 8728 * @param direct_address 8729 * @param channel_map 8730 * @param filter_policy 8731 * 8732 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8733 */ 8734 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8735 uint8_t direct_address_typ, bd_addr_t direct_address, 8736 uint8_t channel_map, uint8_t filter_policy) { 8737 8738 hci_stack->le_advertisements_interval_min = adv_int_min; 8739 hci_stack->le_advertisements_interval_max = adv_int_max; 8740 hci_stack->le_advertisements_type = adv_type; 8741 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8742 hci_stack->le_advertisements_channel_map = channel_map; 8743 hci_stack->le_advertisements_filter_policy = filter_policy; 8744 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8745 6); 8746 8747 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8748 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8749 hci_run(); 8750 } 8751 8752 /** 8753 * @brief Enable/Disable Advertisements 8754 * @param enabled 8755 */ 8756 void gap_advertisements_enable(int enabled){ 8757 if (enabled == 0){ 8758 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8759 } else { 8760 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8761 } 8762 hci_update_advertisements_enabled_for_current_roles(); 8763 hci_run(); 8764 } 8765 8766 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8767 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8768 btstack_linked_list_iterator_t it; 8769 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8770 while (btstack_linked_list_iterator_has_next(&it)){ 8771 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8772 if ( item->advertising_handle == advertising_handle ) { 8773 return item; 8774 } 8775 } 8776 return NULL; 8777 } 8778 8779 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8780 hci_stack->le_resolvable_private_address_update_s = update_s; 8781 hci_run(); 8782 return ERROR_CODE_SUCCESS; 8783 } 8784 8785 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8786 // find free advertisement handle 8787 uint8_t advertisement_handle; 8788 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8789 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8790 } 8791 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8792 // clear 8793 memset(storage, 0, sizeof(le_advertising_set_t)); 8794 // copy params 8795 storage->advertising_handle = advertisement_handle; 8796 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8797 // add to list 8798 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8799 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8800 *out_advertising_handle = advertisement_handle; 8801 // set tasks and start 8802 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8803 hci_run(); 8804 return ERROR_CODE_SUCCESS; 8805 } 8806 8807 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8808 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8809 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8810 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8811 // set tasks and start 8812 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8813 hci_run(); 8814 return ERROR_CODE_SUCCESS; 8815 } 8816 8817 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8818 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8819 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8820 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8821 return ERROR_CODE_SUCCESS; 8822 } 8823 8824 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8825 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8826 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8827 memcpy(advertising_set->random_address, random_address, 6); 8828 // set tasks and start 8829 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8830 hci_run(); 8831 return ERROR_CODE_SUCCESS; 8832 } 8833 8834 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8835 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8836 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8837 advertising_set->adv_data = advertising_data; 8838 advertising_set->adv_data_len = advertising_data_length; 8839 // set tasks and start 8840 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8841 hci_run(); 8842 return ERROR_CODE_SUCCESS; 8843 } 8844 8845 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){ 8846 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8847 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8848 advertising_set->scan_data = scan_response_data; 8849 advertising_set->scan_data_len = scan_response_data_length; 8850 // set tasks and start 8851 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8852 hci_run(); 8853 return ERROR_CODE_SUCCESS; 8854 } 8855 8856 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8857 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8858 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8859 advertising_set->enable_timeout = timeout; 8860 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8861 // set tasks and start 8862 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8863 hci_run(); 8864 return ERROR_CODE_SUCCESS; 8865 } 8866 8867 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8868 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8869 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8870 // set tasks and start 8871 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8872 hci_run(); 8873 return ERROR_CODE_SUCCESS; 8874 } 8875 8876 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8877 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8878 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8879 // set tasks and start 8880 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8881 hci_run(); 8882 return ERROR_CODE_SUCCESS; 8883 } 8884 8885 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8886 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8887 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8888 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8889 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8890 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8891 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8892 // set tasks and start 8893 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8894 hci_run(); 8895 return ERROR_CODE_SUCCESS; 8896 } 8897 8898 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8899 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8900 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8901 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8902 return ERROR_CODE_SUCCESS; 8903 } 8904 8905 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8906 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8907 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8908 advertising_set->periodic_data = periodic_data; 8909 advertising_set->periodic_data_len = periodic_data_length; 8910 // set tasks and start 8911 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8912 hci_run(); 8913 return ERROR_CODE_SUCCESS; 8914 } 8915 8916 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8917 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8918 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8919 // set tasks and start 8920 advertising_set->periodic_include_adi = include_adi; 8921 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8922 hci_run(); 8923 return ERROR_CODE_SUCCESS; 8924 } 8925 8926 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8927 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8928 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8929 // set tasks and start 8930 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8931 hci_run(); 8932 return ERROR_CODE_SUCCESS; 8933 } 8934 8935 #ifdef ENABLE_LE_CENTRAL 8936 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8937 hci_stack->le_past_mode = mode; 8938 hci_stack->le_past_skip = skip; 8939 hci_stack->le_past_sync_timeout = sync_timeout; 8940 hci_stack->le_past_cte_type = cte_type; 8941 hci_stack->le_past_set_default_params = true; 8942 hci_run(); 8943 return ERROR_CODE_SUCCESS; 8944 } 8945 8946 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8947 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8948 if (hci_connection == NULL){ 8949 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8950 } 8951 hci_connection->le_past_sync_handle = sync_handle; 8952 hci_connection->le_past_service_data = service_data; 8953 hci_run(); 8954 return ERROR_CODE_SUCCESS; 8955 } 8956 #endif 8957 8958 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8959 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8960 if (hci_connection == NULL){ 8961 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8962 } 8963 hci_connection->le_past_advertising_handle = advertising_handle; 8964 hci_connection->le_past_service_data = service_data; 8965 hci_run(); 8966 return ERROR_CODE_SUCCESS; 8967 } 8968 8969 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8970 8971 #endif 8972 8973 #endif 8974 8975 void hci_le_set_own_address_type(uint8_t own_address_type){ 8976 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8977 if (own_address_type == hci_stack->le_own_addr_type) return; 8978 hci_stack->le_own_addr_type = own_address_type; 8979 8980 #ifdef ENABLE_LE_PERIPHERAL 8981 // update advertisement parameters, too 8982 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8983 hci_run(); 8984 #endif 8985 #ifdef ENABLE_LE_CENTRAL 8986 // note: we don't update scan parameters or modify ongoing connection attempts 8987 #endif 8988 } 8989 8990 void hci_le_random_address_set(const bd_addr_t random_address){ 8991 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 8992 memcpy(hci_stack->le_random_address, random_address, 6); 8993 hci_stack->le_random_address_set = true; 8994 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 8995 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8996 if (hci_le_extended_advertising_supported()){ 8997 hci_assert_advertisement_set_0_ready(); 8998 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8999 } 9000 #endif 9001 hci_run(); 9002 } 9003 9004 #endif 9005 9006 uint8_t gap_disconnect(hci_con_handle_t handle){ 9007 hci_connection_t * conn = hci_connection_for_handle(handle); 9008 if (!conn){ 9009 hci_emit_disconnection_complete(handle, 0); 9010 return 0; 9011 } 9012 // ignore if already disconnected 9013 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 9014 return 0; 9015 } 9016 conn->state = SEND_DISCONNECT; 9017 hci_run(); 9018 return 0; 9019 } 9020 9021 int gap_read_rssi(hci_con_handle_t con_handle){ 9022 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9023 if (hci_connection == NULL) return 0; 9024 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 9025 hci_run(); 9026 return 1; 9027 } 9028 9029 /** 9030 * @brief Get connection type 9031 * @param con_handle 9032 * @result connection_type 9033 */ 9034 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 9035 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9036 if (!conn) return GAP_CONNECTION_INVALID; 9037 switch (conn->address_type){ 9038 case BD_ADDR_TYPE_LE_PUBLIC: 9039 case BD_ADDR_TYPE_LE_RANDOM: 9040 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9041 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9042 return GAP_CONNECTION_LE; 9043 case BD_ADDR_TYPE_SCO: 9044 return GAP_CONNECTION_SCO; 9045 case BD_ADDR_TYPE_ACL: 9046 return GAP_CONNECTION_ACL; 9047 default: 9048 return GAP_CONNECTION_INVALID; 9049 } 9050 } 9051 9052 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 9053 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9054 if (!conn) return HCI_ROLE_INVALID; 9055 return (hci_role_t) conn->role; 9056 } 9057 9058 9059 #ifdef ENABLE_CLASSIC 9060 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 9061 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9062 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9063 conn->request_role = role; 9064 hci_run(); 9065 return ERROR_CODE_SUCCESS; 9066 } 9067 #endif 9068 9069 #ifdef ENABLE_BLE 9070 9071 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){ 9072 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9073 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9074 9075 conn->le_phy_update_all_phys = all_phys; 9076 conn->le_phy_update_tx_phys = tx_phys; 9077 conn->le_phy_update_rx_phys = rx_phys; 9078 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9079 9080 hci_run(); 9081 9082 return 0; 9083 } 9084 9085 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9086 9087 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9088 // incorrect configuration: 9089 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9090 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9091 btstack_assert(false); 9092 #endif 9093 9094 // check if already in list 9095 btstack_linked_list_iterator_t it; 9096 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9097 while (btstack_linked_list_iterator_has_next(&it)) { 9098 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9099 if (entry->address_type != address_type) { 9100 continue; 9101 } 9102 if (memcmp(entry->address, address, 6) != 0) { 9103 continue; 9104 } 9105 9106 // if already on controller: 9107 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9108 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9109 // drop remove request 9110 entry->state = LE_WHITELIST_ON_CONTROLLER; 9111 return ERROR_CODE_SUCCESS; 9112 } else { 9113 // disallow as already on controller 9114 return ERROR_CODE_COMMAND_DISALLOWED; 9115 } 9116 } 9117 9118 // assume scheduled to add 9119 return ERROR_CODE_COMMAND_DISALLOWED; 9120 } 9121 9122 // alloc and add to list 9123 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9124 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9125 entry->address_type = address_type; 9126 (void)memcpy(entry->address, address, 6); 9127 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9128 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9129 return ERROR_CODE_SUCCESS; 9130 } 9131 9132 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9133 btstack_linked_list_iterator_t it; 9134 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9135 while (btstack_linked_list_iterator_has_next(&it)){ 9136 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9137 if (entry->address_type != address_type) { 9138 continue; 9139 } 9140 if (memcmp(entry->address, address, 6) != 0) { 9141 continue; 9142 } 9143 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9144 // remove from controller if already present 9145 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9146 } else { 9147 // directly remove entry from whitelist 9148 btstack_linked_list_iterator_remove(&it); 9149 btstack_memory_whitelist_entry_free(entry); 9150 } 9151 return ERROR_CODE_SUCCESS; 9152 } 9153 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9154 } 9155 9156 static void hci_whitelist_clear(void){ 9157 btstack_linked_list_iterator_t it; 9158 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9159 while (btstack_linked_list_iterator_has_next(&it)){ 9160 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9161 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9162 // remove from controller if already present 9163 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9164 continue; 9165 } 9166 // directly remove entry from whitelist 9167 btstack_linked_list_iterator_remove(&it); 9168 btstack_memory_whitelist_entry_free(entry); 9169 } 9170 } 9171 9172 /** 9173 * @brief Clear Whitelist 9174 * @return 0 if ok 9175 */ 9176 uint8_t gap_whitelist_clear(void){ 9177 hci_whitelist_clear(); 9178 hci_run(); 9179 return ERROR_CODE_SUCCESS; 9180 } 9181 9182 /** 9183 * @brief Add Device to Whitelist 9184 * @param address_typ 9185 * @param address 9186 * @return 0 if ok 9187 */ 9188 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9189 uint8_t status = hci_whitelist_add(address_type, address); 9190 if (status){ 9191 return status; 9192 } 9193 hci_run(); 9194 return ERROR_CODE_SUCCESS; 9195 } 9196 9197 /** 9198 * @brief Remove Device from Whitelist 9199 * @param address_typ 9200 * @param address 9201 * @return 0 if ok 9202 */ 9203 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9204 uint8_t status = hci_whitelist_remove(address_type, address); 9205 if (status){ 9206 return status; 9207 } 9208 hci_run(); 9209 return ERROR_CODE_SUCCESS; 9210 } 9211 9212 #ifdef ENABLE_LE_CENTRAL 9213 /** 9214 * @brief Connect with Whitelist 9215 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9216 * @return - if ok 9217 */ 9218 uint8_t gap_connect_with_whitelist(void){ 9219 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9220 return ERROR_CODE_COMMAND_DISALLOWED; 9221 } 9222 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9223 hci_run(); 9224 return ERROR_CODE_SUCCESS; 9225 } 9226 9227 /** 9228 * @brief Auto Connection Establishment - Start Connecting to device 9229 * @param address_typ 9230 * @param address 9231 * @return 0 if ok 9232 */ 9233 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9234 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9235 return ERROR_CODE_COMMAND_DISALLOWED; 9236 } 9237 9238 uint8_t status = hci_whitelist_add(address_type, address); 9239 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9240 return status; 9241 } 9242 9243 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9244 9245 hci_run(); 9246 return ERROR_CODE_SUCCESS; 9247 } 9248 9249 /** 9250 * @brief Auto Connection Establishment - Stop Connecting to device 9251 * @param address_typ 9252 * @param address 9253 * @return 0 if ok 9254 */ 9255 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9256 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9257 return ERROR_CODE_COMMAND_DISALLOWED; 9258 } 9259 9260 hci_whitelist_remove(address_type, address); 9261 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9262 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9263 } 9264 hci_run(); 9265 return 0; 9266 } 9267 9268 /** 9269 * @brief Auto Connection Establishment - Stop everything 9270 * @note Convenience function to stop all active auto connection attempts 9271 */ 9272 uint8_t gap_auto_connection_stop_all(void){ 9273 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9274 return ERROR_CODE_COMMAND_DISALLOWED; 9275 } 9276 hci_whitelist_clear(); 9277 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9278 hci_run(); 9279 return ERROR_CODE_SUCCESS; 9280 } 9281 9282 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9283 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9284 if (!conn) return 0; 9285 return conn->le_connection_interval; 9286 } 9287 #endif 9288 #endif 9289 9290 #ifdef ENABLE_CLASSIC 9291 /** 9292 * @brief Set Extended Inquiry Response data 9293 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9294 * @note has to be done before stack starts up 9295 */ 9296 void gap_set_extended_inquiry_response(const uint8_t * data){ 9297 hci_stack->eir_data = data; 9298 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9299 hci_run(); 9300 } 9301 9302 /** 9303 * @brief Start GAP Classic Inquiry 9304 * @param duration in 1.28s units 9305 * @return 0 if ok 9306 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9307 */ 9308 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9309 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9310 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9311 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9312 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9313 } 9314 hci_stack->inquiry_state = duration_in_1280ms_units; 9315 hci_stack->inquiry_max_period_length = 0; 9316 hci_stack->inquiry_min_period_length = 0; 9317 hci_run(); 9318 return 0; 9319 } 9320 9321 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9322 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9323 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9324 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9325 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9326 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9327 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9328 9329 hci_stack->inquiry_state = duration; 9330 hci_stack->inquiry_max_period_length = max_period_length; 9331 hci_stack->inquiry_min_period_length = min_period_length; 9332 hci_run(); 9333 return 0; 9334 } 9335 9336 /** 9337 * @brief Stop GAP Classic Inquiry 9338 * @return 0 if ok 9339 */ 9340 int gap_inquiry_stop(void){ 9341 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9342 // emit inquiry complete event, before it even started 9343 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9344 hci_emit_btstack_event(event, sizeof(event), 1); 9345 return 0; 9346 } 9347 switch (hci_stack->inquiry_state){ 9348 case GAP_INQUIRY_STATE_ACTIVE: 9349 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9350 hci_run(); 9351 return ERROR_CODE_SUCCESS; 9352 case GAP_INQUIRY_STATE_PERIODIC: 9353 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9354 hci_run(); 9355 return ERROR_CODE_SUCCESS; 9356 default: 9357 return ERROR_CODE_COMMAND_DISALLOWED; 9358 } 9359 } 9360 9361 void gap_inquiry_set_lap(uint32_t lap){ 9362 hci_stack->inquiry_lap = lap; 9363 } 9364 9365 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9366 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9367 hci_stack->inquiry_scan_window = inquiry_scan_window; 9368 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9369 hci_run(); 9370 } 9371 9372 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9373 { 9374 hci_stack->inquiry_tx_power_level = tx_power; 9375 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9376 hci_run(); 9377 } 9378 9379 9380 /** 9381 * @brief Remote Name Request 9382 * @param addr 9383 * @param page_scan_repetition_mode 9384 * @param clock_offset only used when bit 15 is set 9385 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9386 */ 9387 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9388 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9389 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9390 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9391 hci_stack->remote_name_clock_offset = clock_offset; 9392 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9393 hci_run(); 9394 return 0; 9395 } 9396 9397 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9398 hci_stack->gap_pairing_state = state; 9399 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9400 hci_run(); 9401 return 0; 9402 } 9403 9404 /** 9405 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9406 * @param addr 9407 * @param pin_data 9408 * @param pin_len 9409 * @return 0 if ok 9410 */ 9411 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9412 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9413 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9414 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9415 hci_stack->gap_pairing_pin_len = pin_len; 9416 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9417 } 9418 9419 /** 9420 * @brief Legacy Pairing Pin Code Response 9421 * @param addr 9422 * @param pin 9423 * @return 0 if ok 9424 */ 9425 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9426 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9427 } 9428 9429 /** 9430 * @brief Abort Legacy Pairing 9431 * @param addr 9432 * @param pin 9433 * @return 0 if ok 9434 */ 9435 int gap_pin_code_negative(bd_addr_t addr){ 9436 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9437 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9438 } 9439 9440 /** 9441 * @brief SSP Passkey Response 9442 * @param addr 9443 * @param passkey 9444 * @return 0 if ok 9445 */ 9446 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9447 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9448 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9449 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9450 } 9451 9452 /** 9453 * @brief Abort SSP Passkey Entry/Pairing 9454 * @param addr 9455 * @param pin 9456 * @return 0 if ok 9457 */ 9458 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9459 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9460 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9461 } 9462 9463 /** 9464 * @brief Accept SSP Numeric Comparison 9465 * @param addr 9466 * @param passkey 9467 * @return 0 if ok 9468 */ 9469 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9470 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9471 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9472 } 9473 9474 /** 9475 * @brief Abort SSP Numeric Comparison/Pairing 9476 * @param addr 9477 * @param pin 9478 * @return 0 if ok 9479 */ 9480 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9481 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9482 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9483 } 9484 9485 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9486 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9487 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9488 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9489 connectionSetAuthenticationFlags(conn, flag); 9490 hci_run(); 9491 return ERROR_CODE_SUCCESS; 9492 } 9493 #endif 9494 9495 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9496 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9497 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9498 } 9499 9500 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9501 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9502 } 9503 #endif 9504 9505 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9506 /** 9507 * @brief Report Remote OOB Data 9508 * @param bd_addr 9509 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9510 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9511 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9512 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9513 */ 9514 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){ 9515 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9516 if (connection == NULL) { 9517 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9518 } 9519 connection->classic_oob_c_192 = c_192; 9520 connection->classic_oob_r_192 = r_192; 9521 9522 // ignore P-256 if not supported by us 9523 if (hci_stack->secure_connections_active){ 9524 connection->classic_oob_c_256 = c_256; 9525 connection->classic_oob_r_256 = r_256; 9526 } 9527 9528 return ERROR_CODE_SUCCESS; 9529 } 9530 /** 9531 * @brief Generate new OOB data 9532 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9533 */ 9534 void gap_ssp_generate_oob_data(void){ 9535 hci_stack->classic_read_local_oob_data = true; 9536 hci_run(); 9537 } 9538 9539 #endif 9540 9541 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9542 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9543 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9544 if (connection == NULL) { 9545 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9546 } 9547 9548 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9549 connection->link_key_type = type; 9550 9551 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9552 } 9553 9554 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9555 /** 9556 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9557 * @param inquiry_mode see bluetooth_defines.h 9558 */ 9559 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9560 hci_stack->inquiry_mode = inquiry_mode; 9561 } 9562 9563 /** 9564 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9565 */ 9566 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9567 hci_stack->sco_voice_setting = voice_setting; 9568 } 9569 9570 /** 9571 * @brief Get SCO Voice Setting 9572 * @return current voice setting 9573 */ 9574 uint16_t hci_get_sco_voice_setting(void){ 9575 return hci_stack->sco_voice_setting; 9576 } 9577 9578 static int hci_have_usb_transport(void){ 9579 if (!hci_stack->hci_transport) return 0; 9580 const char * transport_name = hci_stack->hci_transport->name; 9581 if (!transport_name) return 0; 9582 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9583 } 9584 9585 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9586 uint16_t sco_packet_length = 0; 9587 9588 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9589 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9590 int multiplier; 9591 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9592 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9593 multiplier = 2; 9594 } else { 9595 multiplier = 1; 9596 } 9597 #endif 9598 9599 #ifdef ENABLE_SCO_OVER_HCI 9600 if (hci_have_usb_transport()){ 9601 // see Core Spec for H2 USB Transfer. 9602 // 3 byte SCO header + 24 bytes per connection 9603 // @note multiple sco connections not supported currently 9604 sco_packet_length = 3 + 24 * multiplier; 9605 } else { 9606 // 3 byte SCO header + SCO packet length over the air 9607 sco_packet_length = 3 + payload_size * multiplier; 9608 // assert that it still fits inside an SCO buffer 9609 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9610 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9611 } 9612 } 9613 #endif 9614 #ifdef HAVE_SCO_TRANSPORT 9615 // 3 byte SCO header + SCO packet length over the air 9616 sco_packet_length = 3 + payload_size * multiplier; 9617 // assert that it still fits inside an SCO buffer 9618 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9619 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9620 } 9621 #endif 9622 return sco_packet_length; 9623 } 9624 9625 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9626 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9627 if (connection != NULL){ 9628 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9629 } 9630 return 0; 9631 } 9632 9633 uint16_t hci_get_sco_packet_length(void){ 9634 btstack_linked_list_iterator_t it; 9635 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9636 while (btstack_linked_list_iterator_has_next(&it)){ 9637 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9638 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9639 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9640 } 9641 } 9642 return 0; 9643 } 9644 9645 /** 9646 * @brief Sets the master/slave policy 9647 * @param policy (0: attempt to become master, 1: let connecting device decide) 9648 */ 9649 void hci_set_master_slave_policy(uint8_t policy){ 9650 hci_stack->master_slave_policy = policy; 9651 } 9652 9653 #endif 9654 9655 HCI_STATE hci_get_state(void){ 9656 return hci_stack->state; 9657 } 9658 9659 #ifdef ENABLE_CLASSIC 9660 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9661 hci_stack->gap_classic_accept_callback = accept_callback; 9662 } 9663 #endif 9664 9665 /** 9666 * @brief Set callback for Bluetooth Hardware Error 9667 */ 9668 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9669 hci_stack->hardware_error_callback = fn; 9670 } 9671 9672 void hci_disconnect_all(void){ 9673 btstack_linked_list_iterator_t it; 9674 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9675 while (btstack_linked_list_iterator_has_next(&it)){ 9676 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9677 if (con->state == SENT_DISCONNECT) continue; 9678 con->state = SEND_DISCONNECT; 9679 } 9680 hci_run(); 9681 } 9682 9683 uint16_t hci_get_manufacturer(void){ 9684 return hci_stack->manufacturer; 9685 } 9686 9687 #ifdef ENABLE_BLE 9688 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9689 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9690 if (!hci_con) return NULL; 9691 return &hci_con->sm_connection; 9692 } 9693 9694 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9695 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9696 #endif 9697 9698 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9699 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9700 if (hci_connection == NULL) return 0; 9701 if (hci_is_le_connection(hci_connection)){ 9702 #ifdef ENABLE_BLE 9703 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9704 if (sm_conn->sm_connection_encrypted != 0u) { 9705 return sm_conn->sm_actual_encryption_key_size; 9706 } 9707 #endif 9708 } else { 9709 #ifdef ENABLE_CLASSIC 9710 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9711 return hci_connection->encryption_key_size; 9712 } 9713 #endif 9714 } 9715 return 0; 9716 } 9717 9718 bool gap_authenticated(hci_con_handle_t con_handle){ 9719 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9720 if (hci_connection == NULL) return false; 9721 9722 switch (hci_connection->address_type){ 9723 #ifdef ENABLE_BLE 9724 case BD_ADDR_TYPE_LE_PUBLIC: 9725 case BD_ADDR_TYPE_LE_RANDOM: 9726 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9727 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9728 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9729 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9730 #endif 9731 #ifdef ENABLE_CLASSIC 9732 case BD_ADDR_TYPE_SCO: 9733 case BD_ADDR_TYPE_ACL: 9734 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9735 #endif 9736 default: 9737 return false; 9738 } 9739 } 9740 9741 bool gap_secure_connection(hci_con_handle_t con_handle){ 9742 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9743 if (hci_connection == NULL) return 0; 9744 9745 switch (hci_connection->address_type){ 9746 #ifdef ENABLE_BLE 9747 case BD_ADDR_TYPE_LE_PUBLIC: 9748 case BD_ADDR_TYPE_LE_RANDOM: 9749 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9750 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9751 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9752 return hci_connection->sm_connection.sm_connection_sc; 9753 #endif 9754 #ifdef ENABLE_CLASSIC 9755 case BD_ADDR_TYPE_SCO: 9756 case BD_ADDR_TYPE_ACL: 9757 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9758 #endif 9759 default: 9760 return false; 9761 } 9762 } 9763 9764 bool gap_bonded(hci_con_handle_t con_handle){ 9765 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9766 if (hci_connection == NULL) return 0; 9767 9768 #ifdef ENABLE_CLASSIC 9769 link_key_t link_key; 9770 link_key_type_t link_key_type; 9771 #endif 9772 switch (hci_connection->address_type){ 9773 #ifdef ENABLE_BLE 9774 case BD_ADDR_TYPE_LE_PUBLIC: 9775 case BD_ADDR_TYPE_LE_RANDOM: 9776 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9777 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9778 return hci_connection->sm_connection.sm_le_db_index >= 0; 9779 #endif 9780 #ifdef ENABLE_CLASSIC 9781 case BD_ADDR_TYPE_SCO: 9782 case BD_ADDR_TYPE_ACL: 9783 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9784 #endif 9785 default: 9786 return false; 9787 } 9788 } 9789 9790 #ifdef ENABLE_BLE 9791 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9792 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9793 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9794 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9795 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9796 return sm_conn->sm_connection_authorization_state; 9797 } 9798 #endif 9799 9800 #ifdef ENABLE_CLASSIC 9801 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){ 9802 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9803 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9804 conn->sniff_min_interval = sniff_min_interval; 9805 conn->sniff_max_interval = sniff_max_interval; 9806 conn->sniff_attempt = sniff_attempt; 9807 conn->sniff_timeout = sniff_timeout; 9808 hci_run(); 9809 return 0; 9810 } 9811 9812 /** 9813 * @brief Exit Sniff mode 9814 * @param con_handle 9815 @ @return 0 if ok 9816 */ 9817 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9818 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9819 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9820 conn->sniff_min_interval = 0xffff; 9821 hci_run(); 9822 return 0; 9823 } 9824 9825 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){ 9826 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9827 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9828 conn->sniff_subrating_max_latency = max_latency; 9829 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9830 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9831 hci_run(); 9832 return ERROR_CODE_SUCCESS; 9833 } 9834 9835 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){ 9836 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9837 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9838 conn->qos_service_type = service_type; 9839 conn->qos_token_rate = token_rate; 9840 conn->qos_peak_bandwidth = peak_bandwidth; 9841 conn->qos_latency = latency; 9842 conn->qos_delay_variation = delay_variation; 9843 hci_run(); 9844 return ERROR_CODE_SUCCESS; 9845 } 9846 9847 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9848 hci_stack->new_page_scan_interval = page_scan_interval; 9849 hci_stack->new_page_scan_window = page_scan_window; 9850 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9851 hci_run(); 9852 } 9853 9854 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9855 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9856 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9857 hci_run(); 9858 } 9859 9860 void gap_set_page_timeout(uint16_t page_timeout){ 9861 hci_stack->page_timeout = page_timeout; 9862 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9863 hci_run(); 9864 } 9865 9866 #endif 9867 9868 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9869 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9870 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9871 if (le_device_db_index >= le_device_db_max_count()) return; 9872 uint8_t offset = le_device_db_index >> 3; 9873 uint8_t mask = 1 << (le_device_db_index & 7); 9874 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9875 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9876 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9877 // note: go back to remove entries, otherwise, a remove + add will skip the add 9878 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9879 } 9880 } 9881 9882 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9883 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9884 if (le_device_db_index >= le_device_db_max_count()) return; 9885 uint8_t offset = le_device_db_index >> 3; 9886 uint8_t mask = 1 << (le_device_db_index & 7); 9887 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9888 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9889 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9890 } 9891 } 9892 9893 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9894 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9895 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9896 } 9897 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9898 // restart le resolving list update 9899 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9900 } 9901 return ERROR_CODE_SUCCESS; 9902 } 9903 9904 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9905 hci_stack->le_privacy_mode = privacy_mode; 9906 } 9907 #endif 9908 9909 #ifdef ENABLE_BLE 9910 #ifdef ENABLE_LE_CENTRAL 9911 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9912 9913 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9914 9915 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9916 // incorrect configuration: 9917 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9918 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9919 btstack_assert(false); 9920 #endif 9921 9922 // check if already in list 9923 btstack_linked_list_iterator_t it; 9924 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9925 while (btstack_linked_list_iterator_has_next(&it)) { 9926 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9927 if (entry->sid != advertising_sid) { 9928 continue; 9929 } 9930 if (entry->address_type != address_type) { 9931 continue; 9932 } 9933 if (memcmp(entry->address, address, 6) != 0) { 9934 continue; 9935 } 9936 // disallow if already scheduled to add 9937 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9938 return ERROR_CODE_COMMAND_DISALLOWED; 9939 } 9940 // still on controller, but scheduled to remove -> re-add 9941 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9942 return ERROR_CODE_SUCCESS; 9943 } 9944 // alloc and add to list 9945 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9946 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9947 entry->sid = advertising_sid; 9948 entry->address_type = address_type; 9949 (void)memcpy(entry->address, address, 6); 9950 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9951 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9952 return ERROR_CODE_SUCCESS; 9953 } 9954 9955 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9956 btstack_linked_list_iterator_t it; 9957 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9958 while (btstack_linked_list_iterator_has_next(&it)){ 9959 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9960 if (entry->sid != advertising_sid) { 9961 continue; 9962 } 9963 if (entry->address_type != address_type) { 9964 continue; 9965 } 9966 if (memcmp(entry->address, address, 6) != 0) { 9967 continue; 9968 } 9969 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9970 // remove from controller if already present 9971 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9972 } else { 9973 // directly remove entry from whitelist 9974 btstack_linked_list_iterator_remove(&it); 9975 btstack_memory_periodic_advertiser_list_entry_free(entry); 9976 } 9977 return ERROR_CODE_SUCCESS; 9978 } 9979 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9980 } 9981 9982 static void hci_periodic_advertiser_list_clear(void){ 9983 btstack_linked_list_iterator_t it; 9984 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9985 while (btstack_linked_list_iterator_has_next(&it)){ 9986 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9987 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9988 // remove from controller if already present 9989 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9990 continue; 9991 } 9992 // directly remove entry from whitelist 9993 btstack_linked_list_iterator_remove(&it); 9994 btstack_memory_periodic_advertiser_list_entry_free(entry); 9995 } 9996 } 9997 9998 uint8_t gap_periodic_advertiser_list_clear(void){ 9999 hci_periodic_advertiser_list_clear(); 10000 hci_run(); 10001 return ERROR_CODE_SUCCESS; 10002 } 10003 10004 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10005 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 10006 if (status){ 10007 return status; 10008 } 10009 hci_run(); 10010 return ERROR_CODE_SUCCESS; 10011 } 10012 10013 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 10014 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 10015 if (status){ 10016 return status; 10017 } 10018 hci_run(); 10019 return ERROR_CODE_SUCCESS; 10020 } 10021 10022 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 10023 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 10024 // abort if already active 10025 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 10026 return ERROR_CODE_COMMAND_DISALLOWED; 10027 } 10028 // store request 10029 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 10030 hci_stack->le_periodic_sync_options = options; 10031 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 10032 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 10033 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 10034 hci_stack->le_periodic_sync_skip = skip; 10035 hci_stack->le_periodic_sync_timeout = sync_timeout; 10036 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 10037 10038 hci_run(); 10039 return ERROR_CODE_SUCCESS; 10040 } 10041 10042 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 10043 // abort if not requested 10044 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 10045 return ERROR_CODE_COMMAND_DISALLOWED; 10046 } 10047 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 10048 hci_run(); 10049 return ERROR_CODE_SUCCESS; 10050 } 10051 10052 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 10053 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 10054 return ERROR_CODE_COMMAND_DISALLOWED; 10055 } 10056 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 10057 hci_run(); 10058 return ERROR_CODE_SUCCESS; 10059 } 10060 10061 #endif 10062 #endif 10063 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 10064 static hci_iso_stream_t * 10065 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 10066 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 10067 if (iso_stream != NULL){ 10068 iso_stream->iso_type = iso_type; 10069 iso_stream->state = state; 10070 iso_stream->group_id = group_id; 10071 iso_stream->stream_id = stream_id; 10072 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 10073 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 10074 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10075 } 10076 return iso_stream; 10077 } 10078 10079 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10080 btstack_linked_list_iterator_t it; 10081 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10082 while (btstack_linked_list_iterator_has_next(&it)){ 10083 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10084 if (iso_stream->cis_handle == con_handle ) { 10085 return iso_stream; 10086 } 10087 } 10088 return NULL; 10089 } 10090 10091 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10092 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10093 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10094 btstack_memory_hci_iso_stream_free(iso_stream); 10095 } 10096 10097 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10098 btstack_linked_list_iterator_t it; 10099 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10100 while (btstack_linked_list_iterator_has_next(&it)){ 10101 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10102 if ((iso_stream->group_id == group_id) && 10103 (iso_stream->iso_type == iso_type)){ 10104 btstack_linked_list_iterator_remove(&it); 10105 btstack_memory_hci_iso_stream_free(iso_stream); 10106 } 10107 } 10108 } 10109 10110 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10111 btstack_linked_list_iterator_t it; 10112 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10113 while (btstack_linked_list_iterator_has_next(&it)){ 10114 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10115 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10116 (iso_stream->group_id == group_id)){ 10117 btstack_linked_list_iterator_remove(&it); 10118 btstack_memory_hci_iso_stream_free(iso_stream); 10119 } 10120 } 10121 } 10122 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10123 btstack_linked_list_iterator_t it; 10124 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10125 while (btstack_linked_list_iterator_has_next(&it)){ 10126 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10127 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10128 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10129 } 10130 } 10131 } 10132 10133 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10134 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10135 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10136 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10137 return (sdu_len_offset + 2 + sdu_len) == size; 10138 } 10139 10140 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10141 if (iso_stream == NULL){ 10142 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10143 return; 10144 } 10145 10146 if (hci_stack->iso_packet_handler == NULL) { 10147 return; 10148 } 10149 10150 // parse header 10151 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10152 uint16_t data_total_length = little_endian_read_16(packet, 2); 10153 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10154 10155 // assert packet is complete 10156 if ((data_total_length + 4u) != size){ 10157 return; 10158 } 10159 10160 if ((pb_flag & 0x01) == 0){ 10161 if (pb_flag == 0x02){ 10162 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10163 if (hci_iso_sdu_complete(packet, size)) { 10164 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10165 } 10166 } else { 10167 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10168 if (size > sizeof(iso_stream->reassembly_buffer)){ 10169 return; 10170 } 10171 memcpy(iso_stream->reassembly_buffer, packet, size); 10172 // fix pb_flag 10173 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10174 iso_stream->reassembly_pos = size; 10175 } 10176 } else { 10177 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10178 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10179 if (ts_flag != 0){ 10180 return; 10181 } 10182 // append fragment 10183 if (iso_stream->reassembly_pos == 0){ 10184 return; 10185 } 10186 10187 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10188 // reset reassembly buffer 10189 iso_stream->reassembly_pos = 0; 10190 return; 10191 } 10192 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10193 iso_stream->reassembly_pos += data_total_length; 10194 10195 // deliver if last fragment and SDU complete 10196 if (pb_flag == 0x03){ 10197 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10198 // fix data_total_length 10199 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10200 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10201 } 10202 // reset reassembly buffer 10203 iso_stream->reassembly_pos = 0; 10204 } 10205 } 10206 } 10207 10208 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10209 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10210 uint16_t pos = 0; 10211 event[pos++] = HCI_EVENT_META_GAP; 10212 event[pos++] = 4 + (2 * big->num_bis); 10213 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10214 event[pos++] = status; 10215 event[pos++] = big->big_handle; 10216 event[pos++] = big->num_bis; 10217 uint8_t i; 10218 for (i=0;i<big->num_bis;i++){ 10219 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10220 pos += 2; 10221 } 10222 hci_emit_btstack_event(event, pos, 0); 10223 } 10224 10225 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10226 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10227 uint16_t pos = 0; 10228 event[pos++] = HCI_EVENT_META_GAP; 10229 event[pos++] = 4 + (2 * cig->num_cis); 10230 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10231 event[pos++] = status; 10232 event[pos++] = cig->cig_id; 10233 event[pos++] = cig->num_cis; 10234 uint8_t i; 10235 for (i=0;i<cig->num_cis;i++){ 10236 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10237 pos += 2; 10238 } 10239 hci_emit_btstack_event(event, pos, 0); 10240 } 10241 10242 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10243 uint16_t pos = 0; 10244 event[pos++] = HCI_EVENT_META_GAP; 10245 event[pos++] = 8; 10246 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10247 event[pos++] = status; 10248 event[pos++] = iso_stream->group_id; 10249 event[pos++] = iso_stream->stream_id; 10250 little_endian_store_16(event, pos, iso_stream->cis_handle); 10251 pos += 2; 10252 little_endian_store_16(event, pos, iso_stream->acl_handle); 10253 pos += 2; 10254 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10255 pos += 2; 10256 event[pos++] = iso_stream->number_of_subevents; 10257 event[pos++] = iso_stream->burst_number_c_to_p; 10258 event[pos++] = iso_stream->burst_number_p_to_c; 10259 event[pos++] = iso_stream->flush_timeout_c_to_p; 10260 event[pos++] = iso_stream->flush_timeout_p_to_c; 10261 return pos; 10262 } 10263 10264 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10265 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10266 // cache data before finalizing struct 10267 uint8_t event [17]; 10268 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10269 btstack_assert(pos <= sizeof(event)); 10270 if (status != ERROR_CODE_SUCCESS){ 10271 hci_iso_stream_finalize(iso_stream); 10272 } 10273 hci_emit_btstack_event(event, pos, 0); 10274 } 10275 10276 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10277 uint8_t event [4]; 10278 uint16_t pos = 0; 10279 event[pos++] = HCI_EVENT_META_GAP; 10280 event[pos++] = 2; 10281 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10282 event[pos++] = big->big_handle; 10283 hci_emit_btstack_event(event, pos, 0); 10284 } 10285 10286 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10287 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10288 uint16_t pos = 0; 10289 event[pos++] = HCI_EVENT_META_GAP; 10290 event[pos++] = 4; 10291 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10292 event[pos++] = status; 10293 event[pos++] = big_sync->big_handle; 10294 event[pos++] = big_sync->num_bis; 10295 uint8_t i; 10296 for (i=0;i<big_sync->num_bis;i++){ 10297 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10298 pos += 2; 10299 } 10300 hci_emit_btstack_event(event, pos, 0); 10301 } 10302 10303 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10304 uint8_t event [4]; 10305 uint16_t pos = 0; 10306 event[pos++] = HCI_EVENT_META_GAP; 10307 event[pos++] = 2; 10308 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10309 event[pos++] = big_handle; 10310 hci_emit_btstack_event(event, pos, 0); 10311 } 10312 10313 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10314 uint8_t event[6]; 10315 uint16_t pos = 0; 10316 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10317 event[pos++] = sizeof(event) - 2; 10318 event[pos++] = big->big_handle; 10319 event[pos++] = bis_index; 10320 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10321 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10322 } 10323 10324 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10325 uint8_t event[4]; 10326 uint16_t pos = 0; 10327 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10328 event[pos++] = sizeof(event) - 2; 10329 little_endian_store_16(event, pos, cis_con_handle); 10330 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10331 } 10332 10333 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10334 btstack_linked_list_iterator_t it; 10335 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10336 while (btstack_linked_list_iterator_has_next(&it)){ 10337 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10338 if ( big->big_handle == big_handle ) { 10339 return big; 10340 } 10341 } 10342 return NULL; 10343 } 10344 10345 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10346 btstack_linked_list_iterator_t it; 10347 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10348 while (btstack_linked_list_iterator_has_next(&it)){ 10349 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10350 if ( big_sync->big_handle == big_handle ) { 10351 return big_sync; 10352 } 10353 } 10354 return NULL; 10355 } 10356 10357 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10358 hci_stack->iso_packets_to_queue = num_packets; 10359 } 10360 10361 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10362 btstack_linked_list_iterator_t it; 10363 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10364 while (btstack_linked_list_iterator_has_next(&it)){ 10365 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10366 if ( cig->cig_id == cig_id ) { 10367 return cig; 10368 } 10369 } 10370 return NULL; 10371 } 10372 10373 static void hci_iso_notify_can_send_now(void){ 10374 10375 // BIG 10376 10377 btstack_linked_list_iterator_t it; 10378 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10379 while (btstack_linked_list_iterator_has_next(&it)){ 10380 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10381 // track number completed packet timestamps 10382 if (big->num_completed_timestamp_current_valid){ 10383 big->num_completed_timestamp_current_valid = false; 10384 if (big->num_completed_timestamp_previous_valid){ 10385 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10386 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10387 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10388 big->num_completed_timestamp_previous_ms); 10389 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10390 // to catch up, skip packet on all BIS 10391 uint8_t i; 10392 for (i=0;i<big->num_bis;i++){ 10393 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10394 if (iso_stream){ 10395 iso_stream->num_packets_to_skip++; 10396 } 10397 } 10398 } 10399 } 10400 big->num_completed_timestamp_previous_valid = true; 10401 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10402 } 10403 10404 if (big->can_send_now_requested){ 10405 // check if no outgoing iso packets pending and no can send now have to be emitted 10406 uint8_t i; 10407 bool can_send = true; 10408 uint8_t num_iso_queued_minimum = 0; 10409 for (i=0;i<big->num_bis;i++){ 10410 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10411 if (iso_stream == NULL) continue; 10412 // handle case where individual ISO packet was sent too late: 10413 // for each additionally queued packet, a new one needs to get skipped 10414 if (i==0){ 10415 num_iso_queued_minimum = iso_stream->num_packets_sent; 10416 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10417 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10418 iso_stream->num_packets_to_skip += num_packets_to_skip; 10419 iso_stream->num_packets_sent -= num_packets_to_skip; 10420 } 10421 // check if we can send now 10422 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10423 can_send = false; 10424 break; 10425 } 10426 } 10427 if (can_send){ 10428 // propagate can send now to individual streams 10429 big->can_send_now_requested = false; 10430 for (i=0;i<big->num_bis;i++){ 10431 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10432 iso_stream->emit_ready_to_send = true; 10433 } 10434 } 10435 } 10436 } 10437 10438 if (hci_stack->hci_packet_buffer_reserved) return; 10439 10440 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10441 while (btstack_linked_list_iterator_has_next(&it)){ 10442 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10443 // report bis ready 10444 uint8_t i; 10445 for (i=0;i<big->num_bis;i++){ 10446 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10447 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10448 iso_stream->emit_ready_to_send = false; 10449 hci_emit_bis_can_send_now(big, i); 10450 if (hci_stack->hci_packet_buffer_reserved) return; 10451 } 10452 } 10453 } 10454 10455 10456 // CIS 10457 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10458 while (btstack_linked_list_iterator_has_next(&it)) { 10459 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10460 if ((iso_stream->can_send_now_requested) && 10461 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10462 iso_stream->can_send_now_requested = false; 10463 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10464 if (hci_stack->hci_packet_buffer_reserved) return; 10465 } 10466 } 10467 } 10468 10469 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10470 // make big handle unique and usuable for big and big sync 10471 if (hci_big_for_handle(big_handle) != NULL){ 10472 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10473 } 10474 if (hci_big_sync_for_handle(big_handle) != NULL){ 10475 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10476 } 10477 if (num_bis == 0){ 10478 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10479 } 10480 if (num_bis > MAX_NR_BIS){ 10481 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10482 } 10483 10484 // reserve ISO Streams 10485 uint8_t i; 10486 uint8_t status = ERROR_CODE_SUCCESS; 10487 for (i=0;i<num_bis;i++){ 10488 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10489 if (iso_stream == NULL) { 10490 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10491 break; 10492 } 10493 } 10494 10495 // free structs on error 10496 if (status != ERROR_CODE_SUCCESS){ 10497 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10498 } 10499 10500 return status; 10501 } 10502 10503 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10504 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10505 if (status != ERROR_CODE_SUCCESS){ 10506 return status; 10507 } 10508 10509 le_audio_big_t * big = storage; 10510 big->big_handle = big_params->big_handle; 10511 big->params = big_params; 10512 big->state = LE_AUDIO_BIG_STATE_CREATE; 10513 big->num_bis = big_params->num_bis; 10514 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10515 10516 hci_run(); 10517 10518 return ERROR_CODE_SUCCESS; 10519 } 10520 10521 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10522 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10523 if (status != ERROR_CODE_SUCCESS){ 10524 return status; 10525 } 10526 10527 le_audio_big_sync_t * big_sync = storage; 10528 big_sync->big_handle = big_sync_params->big_handle; 10529 big_sync->params = big_sync_params; 10530 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10531 big_sync->num_bis = big_sync_params->num_bis; 10532 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10533 10534 hci_run(); 10535 10536 return ERROR_CODE_SUCCESS; 10537 } 10538 10539 uint8_t gap_big_terminate(uint8_t big_handle){ 10540 le_audio_big_t * big = hci_big_for_handle(big_handle); 10541 if (big == NULL){ 10542 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10543 } 10544 switch (big->state){ 10545 case LE_AUDIO_BIG_STATE_CREATE: 10546 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10547 hci_emit_big_terminated(big); 10548 break; 10549 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10550 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10551 break; 10552 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10553 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10554 case LE_AUDIO_BIG_STATE_ACTIVE: 10555 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10556 hci_run(); 10557 break; 10558 default: 10559 return ERROR_CODE_COMMAND_DISALLOWED; 10560 } 10561 return ERROR_CODE_SUCCESS; 10562 } 10563 10564 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10565 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10566 if (big_sync == NULL){ 10567 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10568 } 10569 switch (big_sync->state){ 10570 case LE_AUDIO_BIG_STATE_CREATE: 10571 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10572 hci_emit_big_sync_stopped(big_handle); 10573 break; 10574 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10575 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10576 break; 10577 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10578 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10579 case LE_AUDIO_BIG_STATE_ACTIVE: 10580 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10581 hci_run(); 10582 break; 10583 default: 10584 return ERROR_CODE_COMMAND_DISALLOWED; 10585 } 10586 return ERROR_CODE_SUCCESS; 10587 } 10588 10589 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10590 le_audio_big_t * big = hci_big_for_handle(big_handle); 10591 if (big == NULL){ 10592 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10593 } 10594 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10595 return ERROR_CODE_COMMAND_DISALLOWED; 10596 } 10597 big->can_send_now_requested = true; 10598 hci_iso_notify_can_send_now(); 10599 return ERROR_CODE_SUCCESS; 10600 } 10601 10602 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10603 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10604 if (iso_stream == NULL){ 10605 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10606 } 10607 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10608 return ERROR_CODE_COMMAND_DISALLOWED; 10609 } 10610 iso_stream->can_send_now_requested = true; 10611 hci_iso_notify_can_send_now(); 10612 return ERROR_CODE_SUCCESS; 10613 } 10614 10615 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10616 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10617 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10618 } 10619 if (cig_params->num_cis == 0){ 10620 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10621 } 10622 if (cig_params->num_cis > MAX_NR_CIS){ 10623 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10624 } 10625 10626 // reserve ISO Streams 10627 uint8_t i; 10628 uint8_t status = ERROR_CODE_SUCCESS; 10629 for (i=0;i<cig_params->num_cis;i++){ 10630 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10631 if (iso_stream == NULL) { 10632 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10633 break; 10634 } 10635 } 10636 10637 // free structs on error 10638 if (status != ERROR_CODE_SUCCESS){ 10639 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10640 return status; 10641 } 10642 10643 le_audio_cig_t * cig = storage; 10644 cig->cig_id = cig_params->cig_id; 10645 cig->num_cis = cig_params->num_cis; 10646 cig->params = cig_params; 10647 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10648 for (i=0;i<cig->num_cis;i++){ 10649 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10650 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10651 cig->cis_setup_active[i] = false; 10652 cig->cis_established[i] = false; 10653 } 10654 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10655 10656 hci_run(); 10657 10658 return ERROR_CODE_SUCCESS; 10659 } 10660 10661 uint8_t gap_cig_remove(uint8_t cig_id){ 10662 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10663 if (cig == NULL){ 10664 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10665 } 10666 10667 // close active CIS 10668 uint8_t i; 10669 for (i=0;i<cig->num_cis;i++){ 10670 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10671 if (stream != NULL){ 10672 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10673 } 10674 } 10675 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10676 10677 hci_run(); 10678 10679 return ERROR_CODE_SUCCESS; 10680 } 10681 10682 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10683 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10684 if (cig == NULL){ 10685 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10686 } 10687 10688 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10689 return ERROR_CODE_COMMAND_DISALLOWED; 10690 } 10691 10692 // store ACL Connection Handles 10693 uint8_t i; 10694 for (i=0;i<cig->num_cis;i++){ 10695 // check that all con handles exist and store 10696 hci_con_handle_t cis_handle = cis_con_handles[i]; 10697 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10698 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10699 } 10700 uint8_t j; 10701 bool found = false; 10702 for (j=0;j<cig->num_cis;j++){ 10703 if (cig->cis_con_handles[j] == cis_handle){ 10704 cig->acl_con_handles[j] = acl_con_handles[j]; 10705 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10706 btstack_assert(iso_stream != NULL); 10707 iso_stream->acl_handle = acl_con_handles[j]; 10708 found = true; 10709 break; 10710 } 10711 } 10712 if (!found){ 10713 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10714 } 10715 } 10716 10717 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10718 hci_run(); 10719 10720 return ERROR_CODE_SUCCESS; 10721 } 10722 10723 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10724 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10725 if (iso_stream == NULL){ 10726 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10727 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10728 } 10729 10730 // set next state and continue 10731 iso_stream->state = state; 10732 hci_run(); 10733 return ERROR_CODE_SUCCESS; 10734 } 10735 10736 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10737 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10738 } 10739 10740 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10741 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10742 } 10743 10744 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10745 10746 // GAP Privacy - notify clients before random address update 10747 10748 static bool gap_privacy_client_all_ready(void){ 10749 // check if all ready 10750 btstack_linked_list_iterator_t it; 10751 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10752 while (btstack_linked_list_iterator_has_next(&it)) { 10753 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10754 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10755 return false; 10756 } 10757 } 10758 return true; 10759 } 10760 10761 static void gap_privacy_clients_handle_ready(void){ 10762 // clear 'ready' 10763 btstack_linked_list_iterator_t it; 10764 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10765 while (btstack_linked_list_iterator_has_next(&it)) { 10766 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10767 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10768 } 10769 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10770 hci_run(); 10771 } 10772 10773 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10774 btstack_linked_list_iterator_t it; 10775 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10776 while (btstack_linked_list_iterator_has_next(&it)) { 10777 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10778 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10779 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10780 (*client->callback)(client, new_random_address); 10781 } 10782 } 10783 if (gap_privacy_client_all_ready()){ 10784 gap_privacy_clients_handle_ready(); 10785 } 10786 } 10787 10788 void gap_privacy_client_register(gap_privacy_client_t * client){ 10789 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10790 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10791 } 10792 10793 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10794 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10795 if (gap_privacy_client_all_ready()){ 10796 gap_privacy_clients_handle_ready(); 10797 } 10798 } 10799 10800 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10801 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10802 } 10803 10804 #endif /* ENABLE_BLE */ 10805 10806 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10807 void hci_setup_test_connections_fuzz(void){ 10808 hci_connection_t * conn; 10809 10810 // default address: 66:55:44:33:00:01 10811 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10812 10813 // setup Controller info 10814 hci_stack->num_cmd_packets = 255; 10815 hci_stack->acl_packets_total_num = 255; 10816 10817 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10818 addr[5] = 0x01; 10819 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10820 conn->con_handle = addr[5]; 10821 conn->state = RECEIVED_CONNECTION_REQUEST; 10822 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10823 10824 // setup incoming Classic SCO connection with con handle 0x0002 10825 addr[5] = 0x02; 10826 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10827 conn->con_handle = addr[5]; 10828 conn->state = RECEIVED_CONNECTION_REQUEST; 10829 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10830 10831 // setup ready Classic ACL connection with con handle 0x0003 10832 addr[5] = 0x03; 10833 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10834 conn->con_handle = addr[5]; 10835 conn->state = OPEN; 10836 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10837 10838 // setup ready Classic SCO connection with con handle 0x0004 10839 addr[5] = 0x04; 10840 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10841 conn->con_handle = addr[5]; 10842 conn->state = OPEN; 10843 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10844 10845 // setup ready LE ACL connection with con handle 0x005 and public address 10846 addr[5] = 0x05; 10847 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10848 conn->con_handle = addr[5]; 10849 conn->state = OPEN; 10850 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10851 conn->sm_connection.sm_connection_encrypted = 1; 10852 } 10853 10854 void hci_free_connections_fuzz(void){ 10855 btstack_linked_list_iterator_t it; 10856 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10857 while (btstack_linked_list_iterator_has_next(&it)){ 10858 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10859 btstack_linked_list_iterator_remove(&it); 10860 btstack_memory_hci_connection_free(con); 10861 } 10862 } 10863 void hci_simulate_working_fuzz(void){ 10864 hci_stack->le_scanning_param_update = false; 10865 hci_init_done(); 10866 hci_stack->num_cmd_packets = 255; 10867 } 10868 #endif 10869