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, 5) \ 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_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static bool hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 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); 241 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 242 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 243 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 244 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 245 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 246 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 247 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 248 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 249 static void hci_iso_notify_can_send_now(void); 250 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 251 static void hci_emit_big_terminated(const le_audio_big_t * big); 252 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 253 static void hci_emit_big_sync_stopped(uint8_t big_handle); 254 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 255 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 258 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 259 #endif /* ENABLE_BLE */ 260 261 // the STACK is here 262 #ifndef HAVE_MALLOC 263 static hci_stack_t hci_stack_static; 264 #endif 265 static hci_stack_t * hci_stack = NULL; 266 267 #ifdef ENABLE_CLASSIC 268 // default name 269 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 270 271 // test helper 272 static uint8_t disable_l2cap_timeouts = 0; 273 #endif 274 275 // reset connection state on create and on reconnect 276 // don't overwrite addr, con handle, role 277 static void hci_connection_init(hci_connection_t * conn){ 278 conn->authentication_flags = AUTH_FLAG_NONE; 279 conn->bonding_flags = 0; 280 conn->requested_security_level = LEVEL_0; 281 #ifdef ENABLE_CLASSIC 282 conn->request_role = HCI_ROLE_INVALID; 283 conn->sniff_subrating_max_latency = 0xffff; 284 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 285 conn->link_key_type = INVALID_LINK_KEY; 286 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 287 btstack_run_loop_set_timer_context(&conn->timeout, conn); 288 hci_connection_timestamp(conn); 289 #endif 290 conn->acl_recombination_length = 0; 291 conn->acl_recombination_pos = 0; 292 conn->num_packets_sent = 0; 293 294 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 295 #ifdef ENABLE_BLE 296 conn->le_phy_update_all_phys = 0xff; 297 #endif 298 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 299 conn->le_max_tx_octets = 27; 300 #endif 301 #ifdef ENABLE_CLASSIC_PAIRING_OOB 302 conn->classic_oob_c_192 = NULL; 303 conn->classic_oob_r_192 = NULL; 304 conn->classic_oob_c_256 = NULL; 305 conn->classic_oob_r_256 = NULL; 306 #endif 307 } 308 309 /** 310 * create connection for given address 311 * 312 * @return connection OR NULL, if no memory left 313 */ 314 static hci_connection_t * 315 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 316 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 317 318 hci_connection_t * conn = btstack_memory_hci_connection_get(); 319 if (!conn) return NULL; 320 hci_connection_init(conn); 321 322 bd_addr_copy(conn->address, addr); 323 conn->address_type = addr_type; 324 conn->con_handle = HCI_CON_HANDLE_INVALID; 325 conn->role = role; 326 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 327 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 328 conn->le_past_advertising_handle = 0xff; 329 #endif 330 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 331 332 return conn; 333 } 334 335 336 /** 337 * get le connection parameter range 338 * 339 * @return le connection parameter range struct 340 */ 341 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 342 *range = hci_stack->le_connection_parameter_range; 343 } 344 345 /** 346 * set le connection parameter range 347 * 348 */ 349 350 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 351 hci_stack->le_connection_parameter_range = *range; 352 } 353 354 /** 355 * @brief Test if connection parameters are inside in existing rage 356 * @param conn_interval_min (unit: 1.25ms) 357 * @param conn_interval_max (unit: 1.25ms) 358 * @param conn_latency 359 * @param supervision_timeout (unit: 10ms) 360 * @return 1 if included 361 */ 362 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){ 363 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 364 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 365 366 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 367 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 368 369 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 370 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 371 372 return 1; 373 } 374 375 /** 376 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 377 * @note: default: 1 378 * @param max_peripheral_connections 379 */ 380 #ifdef ENABLE_LE_PERIPHERAL 381 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 382 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 383 } 384 #endif 385 386 /** 387 * get hci connections iterator 388 * 389 * @return hci connections iterator 390 */ 391 392 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 393 btstack_linked_list_iterator_init(it, &hci_stack->connections); 394 } 395 396 /** 397 * get connection for a given handle 398 * 399 * @return connection OR NULL, if not found 400 */ 401 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 402 btstack_linked_list_iterator_t it; 403 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 404 while (btstack_linked_list_iterator_has_next(&it)){ 405 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 406 if ( item->con_handle == con_handle ) { 407 return item; 408 } 409 } 410 return NULL; 411 } 412 413 /** 414 * get connection for given address 415 * 416 * @return connection OR NULL, if not found 417 */ 418 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 419 btstack_linked_list_iterator_t it; 420 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 421 while (btstack_linked_list_iterator_has_next(&it)){ 422 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 423 if (connection->address_type != addr_type) continue; 424 if (memcmp(addr, connection->address, 6) != 0) continue; 425 return connection; 426 } 427 return NULL; 428 } 429 430 #ifdef ENABLE_CLASSIC 431 432 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 433 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 434 } 435 436 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 437 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 438 } 439 440 #ifdef ENABLE_SCO_OVER_HCI 441 static int hci_number_sco_connections(void){ 442 int connections = 0; 443 btstack_linked_list_iterator_t it; 444 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 445 while (btstack_linked_list_iterator_has_next(&it)){ 446 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 447 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 448 connections++; 449 } 450 return connections; 451 } 452 #endif 453 454 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 455 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 456 #ifdef HAVE_EMBEDDED_TICK 457 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 458 // connections might be timed out 459 hci_emit_l2cap_check_timeout(connection); 460 } 461 #else 462 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 463 // connections might be timed out 464 hci_emit_l2cap_check_timeout(connection); 465 } 466 #endif 467 } 468 469 static void hci_connection_timestamp(hci_connection_t *connection){ 470 #ifdef HAVE_EMBEDDED_TICK 471 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 472 #else 473 connection->timestamp = btstack_run_loop_get_time_ms(); 474 #endif 475 } 476 477 /** 478 * add authentication flags and reset timer 479 * @note: assumes classic connection 480 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 481 */ 482 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 483 bd_addr_t addr; 484 reverse_bd_addr(bd_addr, addr); 485 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 486 if (conn) { 487 connectionSetAuthenticationFlags(conn, flags); 488 hci_connection_timestamp(conn); 489 } 490 } 491 492 static bool hci_pairing_active(hci_connection_t * hci_connection){ 493 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 494 } 495 496 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 497 if (hci_pairing_active(hci_connection)) return; 498 if (ssp){ 499 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 500 } else { 501 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 502 } 503 // if we are initiator, we have sent an HCI Authenticate Request 504 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 505 506 // if we are responder, use minimal service security level as required level 507 if (!initiator){ 508 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); 509 } 510 511 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 512 513 uint8_t event[12]; 514 event[0] = GAP_EVENT_PAIRING_STARTED; 515 event[1] = 10; 516 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 517 reverse_bd_addr(hci_connection->address, &event[4]); 518 event[10] = (uint8_t) ssp; 519 event[11] = (uint8_t) initiator; 520 hci_emit_event(event, sizeof(event), 1); 521 } 522 523 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 524 hci_connection->requested_security_level = LEVEL_0; 525 if (!hci_pairing_active(hci_connection)) return; 526 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 527 #ifdef ENABLE_CLASSIC_PAIRING_OOB 528 hci_connection->classic_oob_c_192 = NULL; 529 hci_connection->classic_oob_r_192 = NULL; 530 hci_connection->classic_oob_c_256 = NULL; 531 hci_connection->classic_oob_r_256 = NULL; 532 #endif 533 log_info("pairing complete, status %02x", status); 534 535 uint8_t event[11]; 536 event[0] = GAP_EVENT_PAIRING_COMPLETE; 537 event[1] = 9; 538 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 539 reverse_bd_addr(hci_connection->address, &event[4]); 540 event[10] = status; 541 hci_emit_event(event, sizeof(event), 1); 542 543 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 544 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 545 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 546 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 547 hci_connection->bonding_status = status; 548 } 549 } 550 551 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 552 hci_connection_t * conn = hci_connection_for_handle(handle); 553 if (!conn) return false; 554 return hci_pairing_active(conn); 555 } 556 557 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 558 if (!hci_stack->link_key_db) return; 559 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 560 hci_stack->link_key_db->delete_link_key(addr); 561 } 562 563 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 564 if (!hci_stack->link_key_db) return; 565 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 566 hci_stack->link_key_db->put_link_key(addr, link_key, type); 567 } 568 569 bool gap_get_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 false; 571 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 572 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 573 return result; 574 } 575 576 void gap_delete_all_link_keys(void){ 577 bd_addr_t addr; 578 link_key_t link_key; 579 link_key_type_t type; 580 btstack_link_key_iterator_t it; 581 int ok = gap_link_key_iterator_init(&it); 582 if (!ok) { 583 log_error("could not initialize iterator"); 584 return; 585 } 586 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 587 gap_drop_link_key_for_bd_addr(addr); 588 } 589 gap_link_key_iterator_done(&it); 590 } 591 592 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 593 if (!hci_stack->link_key_db) return 0; 594 if (!hci_stack->link_key_db->iterator_init) return 0; 595 return hci_stack->link_key_db->iterator_init(it); 596 } 597 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){ 598 if (!hci_stack->link_key_db) return 0; 599 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 600 } 601 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 602 if (!hci_stack->link_key_db) return; 603 hci_stack->link_key_db->iterator_done(it); 604 } 605 #endif 606 607 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 608 switch (address_type){ 609 case BD_ADDR_TYPE_LE_PUBLIC: 610 case BD_ADDR_TYPE_LE_RANDOM: 611 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 612 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 613 return true; 614 default: 615 return false; 616 } 617 } 618 619 static bool hci_is_le_connection(hci_connection_t * connection){ 620 return hci_is_le_connection_type(connection->address_type); 621 } 622 623 /** 624 * count connections 625 */ 626 static int nr_hci_connections(void){ 627 int count = 0; 628 btstack_linked_item_t *it; 629 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 630 count++; 631 } 632 return count; 633 } 634 635 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 636 637 unsigned int num_packets_sent_classic = 0; 638 unsigned int num_packets_sent_le = 0; 639 640 btstack_linked_item_t *it; 641 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 642 hci_connection_t * connection = (hci_connection_t *) it; 643 if (hci_is_le_connection(connection)){ 644 num_packets_sent_le += connection->num_packets_sent; 645 } 646 if (connection->address_type == BD_ADDR_TYPE_ACL){ 647 num_packets_sent_classic += connection->num_packets_sent; 648 } 649 } 650 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 651 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 652 int free_slots_le = 0; 653 654 if (free_slots_classic < 0){ 655 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); 656 return 0; 657 } 658 659 if (hci_stack->le_acl_packets_total_num){ 660 // if we have LE slots, they are used 661 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 662 if (free_slots_le < 0){ 663 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); 664 return 0; 665 } 666 } else { 667 // otherwise, classic slots are used for LE, too 668 free_slots_classic -= num_packets_sent_le; 669 if (free_slots_classic < 0){ 670 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); 671 return 0; 672 } 673 } 674 675 switch (address_type){ 676 case BD_ADDR_TYPE_UNKNOWN: 677 log_error("hci_number_free_acl_slots: unknown address type"); 678 return 0; 679 680 case BD_ADDR_TYPE_ACL: 681 return (uint16_t) free_slots_classic; 682 683 default: 684 if (hci_stack->le_acl_packets_total_num > 0){ 685 return (uint16_t) free_slots_le; 686 } 687 return (uint16_t) free_slots_classic; 688 } 689 } 690 691 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 692 // get connection type 693 hci_connection_t * connection = hci_connection_for_handle(con_handle); 694 if (!connection){ 695 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 696 return 0; 697 } 698 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 699 } 700 701 #ifdef ENABLE_CLASSIC 702 static int hci_number_free_sco_slots(void){ 703 unsigned int num_sco_packets_sent = 0; 704 btstack_linked_item_t *it; 705 if (hci_stack->synchronous_flow_control_enabled){ 706 // explicit flow control 707 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 708 hci_connection_t * connection = (hci_connection_t *) it; 709 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 710 num_sco_packets_sent += connection->num_packets_sent; 711 } 712 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 713 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 714 return 0; 715 } 716 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 717 } else { 718 // implicit flow control 719 int num_ready = 0; 720 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 721 hci_connection_t * connection = (hci_connection_t *) it; 722 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 723 if (connection->sco_tx_ready == 0) continue; 724 num_ready++; 725 } 726 return num_ready; 727 } 728 } 729 #endif 730 731 // only used to send HCI Host Number Completed Packets 732 static int hci_can_send_comand_packet_transport(void){ 733 if (hci_stack->hci_packet_buffer_reserved) return 0; 734 735 // check for async hci transport implementations 736 if (hci_stack->hci_transport->can_send_packet_now){ 737 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 738 return 0; 739 } 740 } 741 return 1; 742 } 743 744 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 745 bool hci_can_send_command_packet_now(void){ 746 if (hci_can_send_comand_packet_transport() == 0) return false; 747 return hci_stack->num_cmd_packets > 0u; 748 } 749 750 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 751 // check for async hci transport implementations 752 if (!hci_stack->hci_transport->can_send_packet_now) return true; 753 return hci_stack->hci_transport->can_send_packet_now(packet_type); 754 } 755 756 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 757 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 758 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 759 } 760 761 bool hci_can_send_acl_le_packet_now(void){ 762 if (hci_stack->hci_packet_buffer_reserved) return false; 763 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 764 } 765 766 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 767 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 768 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 769 } 770 771 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 772 if (hci_stack->hci_packet_buffer_reserved) return false; 773 return hci_can_send_prepared_acl_packet_now(con_handle); 774 } 775 776 #ifdef ENABLE_CLASSIC 777 bool hci_can_send_acl_classic_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_ACL); 780 } 781 782 bool hci_can_send_prepared_sco_packet_now(void){ 783 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 784 if (hci_have_usb_transport()){ 785 return hci_stack->sco_can_send_now; 786 } else { 787 return hci_number_free_sco_slots() > 0; 788 } 789 } 790 791 bool hci_can_send_sco_packet_now(void){ 792 if (hci_stack->hci_packet_buffer_reserved) return false; 793 return hci_can_send_prepared_sco_packet_now(); 794 } 795 796 void hci_request_sco_can_send_now_event(void){ 797 hci_stack->sco_waiting_for_can_send_now = 1; 798 hci_notify_if_sco_can_send_now(); 799 } 800 #endif 801 802 // used for internal checks in l2cap.c 803 bool hci_is_packet_buffer_reserved(void){ 804 return hci_stack->hci_packet_buffer_reserved; 805 } 806 807 // reserves outgoing packet buffer. 808 // @return 1 if successful 809 bool hci_reserve_packet_buffer(void){ 810 if (hci_stack->hci_packet_buffer_reserved) { 811 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 812 return false; 813 } 814 hci_stack->hci_packet_buffer_reserved = true; 815 return true; 816 } 817 818 void hci_release_packet_buffer(void){ 819 hci_stack->hci_packet_buffer_reserved = false; 820 } 821 822 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 823 static int hci_transport_synchronous(void){ 824 return hci_stack->hci_transport->can_send_packet_now == NULL; 825 } 826 827 // used for debugging 828 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 829 static void hci_controller_dump_packets(void){ 830 // format: "{handle:04x}:{count:02d} " 831 char summaries[3][7 * 8 + 1]; 832 uint16_t totals[3]; 833 uint8_t index; 834 for (index = 0 ; index < 3 ; index++){ 835 summaries[index][0] = 0; 836 totals[index] = 0; 837 } 838 btstack_linked_item_t *it; 839 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 840 hci_connection_t * connection = (hci_connection_t *) it; 841 switch (connection->address_type){ 842 case BD_ADDR_TYPE_ACL: 843 index = 0; 844 break; 845 case BD_ADDR_TYPE_SCO: 846 index = 2; 847 break; 848 default: 849 index = 1; 850 break; 851 } 852 totals[index] += connection->num_packets_sent; 853 char item_text[10]; 854 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 855 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 856 } 857 for (index = 0 ; index < 3 ; index++){ 858 if (summaries[index][0] == 0){ 859 summaries[index][0] = '-'; 860 summaries[index][1] = 0; 861 } 862 } 863 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]); 864 } 865 #endif 866 867 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 868 869 // 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); 870 871 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 872 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 873 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 874 max_acl_data_packet_length = hci_stack->le_data_packets_length; 875 } 876 877 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 878 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 879 max_acl_data_packet_length = connection->le_max_tx_octets; 880 } 881 #endif 882 883 log_debug("hci_send_acl_packet_fragments entered"); 884 885 uint8_t status = ERROR_CODE_SUCCESS; 886 // multiple packets could be send on a synchronous HCI transport 887 while (true){ 888 889 log_debug("hci_send_acl_packet_fragments loop entered"); 890 891 // get current data 892 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 893 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 894 bool more_fragments = false; 895 896 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 897 if (current_acl_data_packet_length > max_acl_data_packet_length){ 898 more_fragments = true; 899 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 900 } 901 902 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 903 if (acl_header_pos > 0u){ 904 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 905 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 906 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 907 } 908 909 // update header len 910 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 911 912 // count packet 913 connection->num_packets_sent++; 914 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 915 916 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 917 if (more_fragments){ 918 // update start of next fragment to send 919 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 920 } else { 921 // done 922 hci_stack->acl_fragmentation_pos = 0; 923 hci_stack->acl_fragmentation_total_size = 0; 924 } 925 926 // send packet 927 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 928 const int size = current_acl_data_packet_length + 4; 929 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 930 hci_stack->acl_fragmentation_tx_active = 1; 931 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 932 if (err != 0){ 933 // no error from HCI Transport expected 934 status = ERROR_CODE_HARDWARE_FAILURE; 935 } 936 937 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 938 hci_controller_dump_packets(); 939 #endif 940 941 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 942 943 // done yet? 944 if (!more_fragments) break; 945 946 // can send more? 947 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 948 } 949 950 log_debug("hci_send_acl_packet_fragments loop over"); 951 952 // release buffer now for synchronous transport 953 if (hci_transport_synchronous()){ 954 hci_stack->acl_fragmentation_tx_active = 0; 955 hci_release_packet_buffer(); 956 hci_emit_transport_packet_sent(); 957 } 958 959 return status; 960 } 961 962 // pre: caller has reserved the packet buffer 963 uint8_t hci_send_acl_packet_buffer(int size){ 964 btstack_assert(hci_stack->hci_packet_buffer_reserved); 965 966 uint8_t * packet = hci_stack->hci_packet_buffer; 967 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 968 969 hci_connection_t *connection = hci_connection_for_handle( con_handle); 970 if (!connection) { 971 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 972 hci_release_packet_buffer(); 973 hci_emit_transport_packet_sent(); 974 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 975 } 976 977 // check for free places on Bluetooth module 978 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 979 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 980 hci_release_packet_buffer(); 981 hci_emit_transport_packet_sent(); 982 return BTSTACK_ACL_BUFFERS_FULL; 983 } 984 985 #ifdef ENABLE_CLASSIC 986 hci_connection_timestamp(connection); 987 #endif 988 989 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 990 991 // setup data 992 hci_stack->acl_fragmentation_total_size = size; 993 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 994 995 return hci_send_acl_packet_fragments(connection); 996 } 997 998 #ifdef ENABLE_CLASSIC 999 // pre: caller has reserved the packet buffer 1000 uint8_t hci_send_sco_packet_buffer(int size){ 1001 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1002 1003 uint8_t * packet = hci_stack->hci_packet_buffer; 1004 1005 // skip checks in loopback mode 1006 if (!hci_stack->loopback_mode){ 1007 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1008 1009 // check for free places on Bluetooth module 1010 if (!hci_can_send_prepared_sco_packet_now()) { 1011 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1012 hci_release_packet_buffer(); 1013 hci_emit_transport_packet_sent(); 1014 return BTSTACK_ACL_BUFFERS_FULL; 1015 } 1016 1017 // track send packet in connection struct 1018 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1019 if (!connection) { 1020 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1021 hci_release_packet_buffer(); 1022 hci_emit_transport_packet_sent(); 1023 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1024 } 1025 1026 if (hci_have_usb_transport()){ 1027 // token used 1028 hci_stack->sco_can_send_now = false; 1029 } else { 1030 if (hci_stack->synchronous_flow_control_enabled){ 1031 connection->num_packets_sent++; 1032 } else { 1033 connection->sco_tx_ready--; 1034 } 1035 } 1036 } 1037 1038 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1039 1040 #ifdef HAVE_SCO_TRANSPORT 1041 hci_stack->sco_transport->send_packet(packet, size); 1042 hci_release_packet_buffer(); 1043 hci_emit_transport_packet_sent(); 1044 1045 return 0; 1046 #else 1047 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1048 if (hci_transport_synchronous()){ 1049 hci_release_packet_buffer(); 1050 hci_emit_transport_packet_sent(); 1051 } 1052 1053 if (err != 0){ 1054 return ERROR_CODE_HARDWARE_FAILURE; 1055 } 1056 return ERROR_CODE_SUCCESS; 1057 #endif 1058 } 1059 #endif 1060 1061 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1062 static uint8_t hci_send_iso_packet_fragments(void){ 1063 1064 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1065 uint8_t status = ERROR_CODE_SUCCESS; 1066 // multiple packets could be send on a synchronous HCI transport 1067 while (true){ 1068 1069 // get current data 1070 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1071 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1072 bool more_fragments = false; 1073 1074 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1075 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1076 more_fragments = true; 1077 current_iso_data_packet_length = max_iso_data_packet_length; 1078 } 1079 1080 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1081 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1082 uint8_t pb_flags; 1083 if (iso_header_pos == 0u){ 1084 // first fragment, keep TS field 1085 pb_flags = more_fragments ? 0x00 : 0x02; 1086 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1087 } else { 1088 // later fragment, drop TS field 1089 pb_flags = more_fragments ? 0x01 : 0x03; 1090 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1091 } 1092 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1093 1094 // update header len 1095 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1096 1097 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1098 if (more_fragments){ 1099 // update start of next fragment to send 1100 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1101 } else { 1102 // done 1103 hci_stack->iso_fragmentation_pos = 0; 1104 hci_stack->iso_fragmentation_total_size = 0; 1105 } 1106 1107 // send packet 1108 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1109 const int size = current_iso_data_packet_length + 4; 1110 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1111 hci_stack->iso_fragmentation_tx_active = true; 1112 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1113 if (err != 0){ 1114 // no error from HCI Transport expected 1115 status = ERROR_CODE_HARDWARE_FAILURE; 1116 } 1117 1118 // done yet? 1119 if (!more_fragments) break; 1120 1121 // can send more? 1122 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1123 } 1124 1125 // release buffer now for synchronous transport 1126 if (hci_transport_synchronous()){ 1127 hci_stack->iso_fragmentation_tx_active = false; 1128 hci_release_packet_buffer(); 1129 hci_emit_transport_packet_sent(); 1130 } 1131 1132 return status; 1133 } 1134 1135 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1136 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1137 1138 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1139 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1140 if (iso_stream == NULL){ 1141 hci_release_packet_buffer(); 1142 hci_iso_notify_can_send_now(); 1143 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1144 } 1145 1146 // TODO: check for space on controller 1147 1148 // skip iso packets if needed 1149 if (iso_stream->num_packets_to_skip > 0){ 1150 iso_stream->num_packets_to_skip--; 1151 // pretend it was processed and trigger next one 1152 hci_release_packet_buffer(); 1153 hci_iso_notify_can_send_now(); 1154 return ERROR_CODE_SUCCESS; 1155 } 1156 1157 // track outgoing packet sent 1158 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1159 iso_stream->num_packets_sent++; 1160 1161 // setup data 1162 hci_stack->iso_fragmentation_total_size = size; 1163 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1164 1165 return hci_send_iso_packet_fragments(); 1166 } 1167 #endif 1168 1169 static void acl_handler(uint8_t *packet, uint16_t size){ 1170 1171 // get info 1172 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1173 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1174 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1175 uint16_t acl_length = READ_ACL_LENGTH(packet); 1176 1177 // ignore non-registered handle 1178 if (!conn){ 1179 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1180 return; 1181 } 1182 1183 // assert packet is complete 1184 if ((acl_length + 4u) != size){ 1185 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1186 return; 1187 } 1188 1189 #ifdef ENABLE_CLASSIC 1190 // update idle timestamp 1191 hci_connection_timestamp(conn); 1192 #endif 1193 1194 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1195 hci_stack->host_completed_packets = 1; 1196 conn->num_packets_completed++; 1197 #endif 1198 1199 // handle different packet types 1200 switch (acl_flags & 0x03u) { 1201 1202 case 0x01: // continuation fragment 1203 1204 // sanity checks 1205 if (conn->acl_recombination_pos == 0u) { 1206 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1207 return; 1208 } 1209 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1210 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1211 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1212 conn->acl_recombination_pos = 0; 1213 return; 1214 } 1215 1216 // append fragment payload (header already stored) 1217 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1218 &packet[4], acl_length); 1219 conn->acl_recombination_pos += acl_length; 1220 1221 // forward complete L2CAP packet if complete. 1222 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1223 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1224 // reset recombination buffer 1225 conn->acl_recombination_length = 0; 1226 conn->acl_recombination_pos = 0; 1227 } 1228 break; 1229 1230 case 0x02: { // first fragment 1231 1232 // sanity check 1233 if (conn->acl_recombination_pos) { 1234 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1235 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1236 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1237 } 1238 conn->acl_recombination_pos = 0; 1239 } 1240 1241 // peek into L2CAP packet! 1242 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1243 1244 // compare fragment size to L2CAP packet size 1245 if (acl_length >= (l2cap_length + 4u)){ 1246 // forward fragment as L2CAP packet 1247 hci_emit_acl_packet(packet, acl_length + 4u); 1248 } else { 1249 1250 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1251 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1252 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1253 return; 1254 } 1255 1256 // store first fragment and tweak acl length for complete package 1257 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1258 packet, acl_length + 4u); 1259 conn->acl_recombination_pos = acl_length + 4u; 1260 conn->acl_recombination_length = l2cap_length; 1261 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1262 } 1263 break; 1264 1265 } 1266 default: 1267 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1268 return; 1269 } 1270 1271 // execute main loop 1272 hci_run(); 1273 } 1274 1275 static void hci_connection_stop_timer(hci_connection_t * conn){ 1276 btstack_run_loop_remove_timer(&conn->timeout); 1277 #ifdef ENABLE_CLASSIC 1278 btstack_run_loop_remove_timer(&conn->timeout_sco); 1279 #endif 1280 } 1281 1282 static void hci_shutdown_connection(hci_connection_t *conn){ 1283 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1284 1285 #ifdef ENABLE_CLASSIC 1286 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1287 bd_addr_type_t addr_type = conn->address_type; 1288 #endif 1289 #ifdef HAVE_SCO_TRANSPORT 1290 hci_con_handle_t con_handle = conn->con_handle; 1291 #endif 1292 #endif 1293 1294 hci_connection_stop_timer(conn); 1295 1296 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1297 btstack_memory_hci_connection_free( conn ); 1298 1299 // now it's gone 1300 hci_emit_nr_connections_changed(); 1301 1302 #ifdef ENABLE_CLASSIC 1303 #ifdef ENABLE_SCO_OVER_HCI 1304 // update SCO 1305 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1306 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1307 } 1308 #endif 1309 #ifdef HAVE_SCO_TRANSPORT 1310 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1311 hci_stack->sco_transport->close(con_handle); 1312 } 1313 #endif 1314 #endif 1315 } 1316 1317 #ifdef ENABLE_CLASSIC 1318 1319 static const uint16_t hci_acl_packet_type_sizes[] = { 1320 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1321 HCI_ACL_DH1_SIZE, 0, 0, 0, 1322 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1323 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1324 }; 1325 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1326 0, // 3 slot packets 1327 1, // 5 slot packets 1328 25, // EDR 2 mpbs 1329 26, // EDR 3 mbps 1330 39, // 3 slot EDR packts 1331 40, // 5 slot EDR packet 1332 }; 1333 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1334 0x0f00, // 3 slot packets 1335 0xf000, // 5 slot packets 1336 0x1102, // EDR 2 mpbs 1337 0x2204, // EDR 3 mbps 1338 0x0300, // 3 slot EDR packts 1339 0x3000, // 5 slot EDR packet 1340 }; 1341 1342 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1343 // enable packet types based on size 1344 uint16_t packet_types = 0; 1345 unsigned int i; 1346 for (i=0;i<16;i++){ 1347 if (hci_acl_packet_type_sizes[i] == 0) continue; 1348 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1349 packet_types |= 1 << i; 1350 } 1351 } 1352 // disable packet types due to missing local supported features 1353 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1354 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1355 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1356 if (feature_set) continue; 1357 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1358 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1359 } 1360 return packet_types; 1361 } 1362 1363 uint16_t hci_usable_acl_packet_types(void){ 1364 // flip bits for "may not be used" 1365 return hci_stack->usable_packet_types_acl ^ 0x3306; 1366 } 1367 1368 static const struct { 1369 uint8_t feature_index; 1370 uint16_t feature_packet_mask; 1371 } hci_sco_packet_type_feature_requirements[] = { 1372 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1373 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1374 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1375 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1376 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1377 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1378 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1379 }; 1380 1381 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1382 static const struct { 1383 uint16_t type; 1384 uint16_t payload_length; 1385 } hci_sco_packet_type_to_payload_length[] = { 1386 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1387 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1388 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1389 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1390 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1391 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1392 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1393 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1394 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1395 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1396 }; 1397 1398 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1399 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1400 unsigned int i; 1401 // disable packet types due to missing local supported features 1402 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1403 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1404 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1405 if (feature_set) continue; 1406 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); 1407 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1408 } 1409 return packet_types; 1410 } 1411 1412 uint16_t hci_usable_sco_packet_types(void){ 1413 return hci_stack->usable_packet_types_sco; 1414 } 1415 1416 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1417 uint8_t i; 1418 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1419 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1420 return hci_sco_packet_type_to_payload_length[i].payload_length; 1421 } 1422 } 1423 return 0; 1424 } 1425 1426 #endif 1427 1428 uint8_t* hci_get_outgoing_packet_buffer(void){ 1429 // hci packet buffer is >= acl data packet length 1430 return hci_stack->hci_packet_buffer; 1431 } 1432 1433 uint16_t hci_max_acl_data_packet_length(void){ 1434 return hci_stack->acl_data_packet_length; 1435 } 1436 1437 #ifdef ENABLE_CLASSIC 1438 bool hci_extended_sco_link_supported(void){ 1439 // No. 31, byte 3, bit 7 1440 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1441 } 1442 #endif 1443 1444 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1445 // No. 54, byte 6, bit 6 1446 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1447 } 1448 1449 #ifdef ENABLE_CLASSIC 1450 static int gap_ssp_supported(void){ 1451 // No. 51, byte 6, bit 3 1452 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1453 } 1454 #endif 1455 1456 static int hci_classic_supported(void){ 1457 #ifdef ENABLE_CLASSIC 1458 // No. 37, byte 4, bit 5, = No BR/EDR Support 1459 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1460 #else 1461 return 0; 1462 #endif 1463 } 1464 1465 static int hci_le_supported(void){ 1466 #ifdef ENABLE_BLE 1467 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1468 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1469 #else 1470 return 0; 1471 #endif 1472 } 1473 1474 static bool hci_command_supported(uint8_t command_index){ 1475 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1476 } 1477 1478 #ifdef ENABLE_BLE 1479 1480 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1481 static bool hci_extended_advertising_supported(void){ 1482 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1483 } 1484 #endif 1485 1486 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1487 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1488 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1489 } else { 1490 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1491 } 1492 } 1493 1494 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1495 *addr_type = hci_stack->le_own_addr_type; 1496 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1497 } 1498 1499 #ifdef ENABLE_LE_PERIPHERAL 1500 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1501 *addr_type = hci_stack->le_advertisements_own_addr_type; 1502 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1503 }; 1504 #endif 1505 1506 #ifdef ENABLE_LE_CENTRAL 1507 1508 /** 1509 * @brief Get own addr type and address used for LE connections (Central) 1510 */ 1511 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1512 *addr_type = hci_stack->le_connection_own_addr_type; 1513 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1514 } 1515 1516 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1517 1518 uint16_t offset = 3; 1519 uint8_t num_reports = packet[offset]; 1520 offset += 1; 1521 1522 uint16_t i; 1523 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1524 for (i=0; (i<num_reports) && (offset < size);i++){ 1525 // sanity checks on data_length: 1526 uint8_t data_length = packet[offset + 8]; 1527 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1528 if ((offset + 9u + data_length + 1u) > size) return; 1529 // setup event 1530 uint8_t event_size = 10u + data_length; 1531 uint16_t pos = 0; 1532 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1533 event[pos++] = event_size; 1534 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1535 offset += 8; 1536 pos += 8; 1537 event[pos++] = packet[offset + 1 + data_length]; // rssi 1538 event[pos++] = data_length; 1539 offset++; 1540 (void)memcpy(&event[pos], &packet[offset], data_length); 1541 pos += data_length; 1542 offset += data_length + 1u; // rssi 1543 hci_emit_event(event, pos, 1); 1544 } 1545 } 1546 1547 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1548 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1549 uint16_t offset = 3; 1550 uint8_t num_reports = packet[offset++]; 1551 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1552 uint8_t i; 1553 for (i=0; (i<num_reports) && (offset < size);i++){ 1554 // sanity checks on data_length: 1555 uint16_t data_length = packet[offset + 23]; 1556 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1557 if ((offset + 24u + data_length) > size) return; 1558 uint16_t event_type = little_endian_read_16(packet, offset); 1559 offset += 2; 1560 if ((event_type & 0x10) != 0) { 1561 // setup legacy event 1562 uint8_t legacy_event_type; 1563 switch (event_type){ 1564 case 0b0010011: 1565 // ADV_IND 1566 legacy_event_type = 0; 1567 break; 1568 case 0b0010101: 1569 // ADV_DIRECT_IND 1570 legacy_event_type = 1; 1571 break; 1572 case 0b0010010: 1573 // ADV_SCAN_IND 1574 legacy_event_type = 2; 1575 break; 1576 case 0b0010000: 1577 // ADV_NONCONN_IND 1578 legacy_event_type = 3; 1579 break; 1580 case 0b0011011: 1581 case 0b0011010: 1582 // SCAN_RSP 1583 legacy_event_type = 4; 1584 break; 1585 default: 1586 legacy_event_type = 0; 1587 break; 1588 } 1589 uint16_t pos = 0; 1590 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1591 event[pos++] = 10u + data_length; 1592 event[pos++] = legacy_event_type; 1593 // copy address type + address 1594 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1595 offset += 7; 1596 pos += 7; 1597 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1598 offset += 4; 1599 // copy rssi 1600 event[pos++] = packet[offset++]; 1601 // skip periodic advertising interval and direct address 1602 offset += 9; 1603 // copy data len + data; 1604 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1605 pos += 1 +data_length; 1606 offset += 1+ data_length; 1607 hci_emit_event(event, pos, 1); 1608 } else { 1609 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1610 uint8_t report_len = 24 + data_length; 1611 event[1] = report_len; 1612 little_endian_store_16(event, 2, event_type); 1613 memcpy(&event[4], &packet[offset], report_len); 1614 offset += report_len; 1615 hci_emit_event(event, 2 + report_len, 1); 1616 } 1617 } 1618 } 1619 #endif 1620 1621 #endif 1622 #endif 1623 1624 #ifdef ENABLE_BLE 1625 #ifdef ENABLE_LE_PERIPHERAL 1626 static void hci_update_advertisements_enabled_for_current_roles(void){ 1627 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1628 // get number of active le slave connections 1629 int num_slave_connections = 0; 1630 btstack_linked_list_iterator_t it; 1631 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1632 while (btstack_linked_list_iterator_has_next(&it)){ 1633 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1634 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1635 if (con->state != OPEN) continue; 1636 if (con->role != HCI_ROLE_SLAVE) continue; 1637 if (!hci_is_le_connection(con)) continue; 1638 num_slave_connections++; 1639 } 1640 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1641 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1642 } else { 1643 hci_stack->le_advertisements_enabled_for_current_roles = false; 1644 } 1645 } 1646 #endif 1647 #endif 1648 1649 #ifdef ENABLE_CLASSIC 1650 static void gap_run_set_local_name(void){ 1651 hci_reserve_packet_buffer(); 1652 uint8_t * packet = hci_stack->hci_packet_buffer; 1653 // construct HCI Command and send 1654 uint16_t opcode = hci_write_local_name.opcode; 1655 hci_stack->last_cmd_opcode = opcode; 1656 packet[0] = opcode & 0xff; 1657 packet[1] = opcode >> 8; 1658 packet[2] = DEVICE_NAME_LEN; 1659 memset(&packet[3], 0, DEVICE_NAME_LEN); 1660 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1661 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1662 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1663 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1664 // expand '00:00:00:00:00:00' in name with bd_addr 1665 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1666 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1667 } 1668 1669 static void gap_run_set_eir_data(void){ 1670 hci_reserve_packet_buffer(); 1671 uint8_t * packet = hci_stack->hci_packet_buffer; 1672 // construct HCI Command in-place and send 1673 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1674 hci_stack->last_cmd_opcode = opcode; 1675 uint16_t offset = 0; 1676 packet[offset++] = opcode & 0xff; 1677 packet[offset++] = opcode >> 8; 1678 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1679 packet[offset++] = 0; // FEC not required 1680 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1681 if (hci_stack->eir_data){ 1682 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1683 ad_context_t context; 1684 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1685 uint8_t data_type = ad_iterator_get_data_type(&context); 1686 uint8_t size = ad_iterator_get_data_len(&context); 1687 const uint8_t *data = ad_iterator_get_data(&context); 1688 // copy item 1689 packet[offset++] = size + 1; 1690 packet[offset++] = data_type; 1691 memcpy(&packet[offset], data, size); 1692 // update name item 1693 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1694 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1695 } 1696 offset += size; 1697 } 1698 } else { 1699 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1700 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1701 packet[offset++] = bytes_to_copy + 1; 1702 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1703 (void)memcpy(&packet[6], 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[offset], bytes_to_copy, hci_stack->local_bd_addr); 1706 } 1707 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1708 } 1709 1710 static void hci_run_gap_tasks_classic(void){ 1711 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1712 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1713 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1714 return; 1715 } 1716 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1717 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1718 gap_run_set_local_name(); 1719 return; 1720 } 1721 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1722 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1723 gap_run_set_eir_data(); 1724 return; 1725 } 1726 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1727 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1728 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1729 return; 1730 } 1731 // write page scan activity 1732 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1733 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1734 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1735 return; 1736 } 1737 // write page scan type 1738 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1739 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1740 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1741 return; 1742 } 1743 // write page timeout 1744 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1745 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1746 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1747 return; 1748 } 1749 // send scan enable 1750 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1751 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1752 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1753 return; 1754 } 1755 // send write scan activity 1756 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1757 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1758 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1759 return; 1760 } 1761 // send write inquiry transmit power level 1762 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1763 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1764 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1765 return; 1766 } 1767 } 1768 #endif 1769 1770 #ifndef HAVE_HOST_CONTROLLER_API 1771 1772 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1773 if (!hci_stack->config) return 0; 1774 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1775 // Limit baud rate for Broadcom chipsets to 3 mbps 1776 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1777 baud_rate = 3000000; 1778 } 1779 return baud_rate; 1780 } 1781 1782 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1783 UNUSED(ds); 1784 1785 switch (hci_stack->substate){ 1786 case HCI_INIT_W4_SEND_RESET: 1787 log_info("Resend HCI Reset"); 1788 hci_stack->substate = HCI_INIT_SEND_RESET; 1789 hci_stack->num_cmd_packets = 1; 1790 hci_run(); 1791 break; 1792 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1793 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1794 if (hci_stack->hci_transport->reset_link){ 1795 hci_stack->hci_transport->reset_link(); 1796 } 1797 1798 /* fall through */ 1799 1800 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1801 log_info("Resend HCI Reset - CSR Warm Boot"); 1802 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1803 hci_stack->num_cmd_packets = 1; 1804 hci_run(); 1805 break; 1806 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1807 if (hci_stack->hci_transport->set_baudrate){ 1808 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1809 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1810 hci_stack->hci_transport->set_baudrate(baud_rate); 1811 } 1812 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1813 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1814 if (hci_stack->hci_transport->reset_link){ 1815 log_info("Link Reset"); 1816 hci_stack->hci_transport->reset_link(); 1817 } 1818 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1819 hci_run(); 1820 } 1821 break; 1822 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1823 // otherwise continue 1824 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1825 hci_send_cmd(&hci_read_local_supported_commands); 1826 break; 1827 default: 1828 break; 1829 } 1830 } 1831 #endif 1832 1833 static void hci_initializing_next_state(void){ 1834 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1835 } 1836 1837 static void hci_init_done(void){ 1838 // done. tell the app 1839 log_info("hci_init_done -> HCI_STATE_WORKING"); 1840 hci_stack->state = HCI_STATE_WORKING; 1841 hci_emit_state(); 1842 } 1843 1844 // assumption: hci_can_send_command_packet_now() == true 1845 static void hci_initializing_run(void){ 1846 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1847 1848 if (!hci_can_send_command_packet_now()) return; 1849 1850 #ifndef HAVE_HOST_CONTROLLER_API 1851 bool need_baud_change = hci_stack->config 1852 && hci_stack->chipset 1853 && hci_stack->chipset->set_baudrate_command 1854 && hci_stack->hci_transport->set_baudrate 1855 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1856 #endif 1857 1858 switch (hci_stack->substate){ 1859 case HCI_INIT_SEND_RESET: 1860 hci_state_reset(); 1861 1862 #ifndef HAVE_HOST_CONTROLLER_API 1863 // prepare reset if command complete not received in 100ms 1864 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1865 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1866 btstack_run_loop_add_timer(&hci_stack->timeout); 1867 #endif 1868 // send command 1869 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1870 hci_send_cmd(&hci_reset); 1871 break; 1872 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1873 hci_send_cmd(&hci_read_local_version_information); 1874 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1875 break; 1876 1877 #ifndef HAVE_HOST_CONTROLLER_API 1878 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1879 hci_state_reset(); 1880 // prepare reset if command complete not received in 100ms 1881 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1882 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1883 btstack_run_loop_add_timer(&hci_stack->timeout); 1884 // send command 1885 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1886 hci_send_cmd(&hci_reset); 1887 break; 1888 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1889 hci_state_reset(); 1890 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1891 hci_send_cmd(&hci_reset); 1892 break; 1893 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1894 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1895 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1896 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1897 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1898 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1899 break; 1900 } 1901 case HCI_INIT_SET_BD_ADDR: 1902 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1903 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1904 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1905 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1906 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1907 break; 1908 case HCI_INIT_SEND_READ_LOCAL_NAME: 1909 #ifdef ENABLE_CLASSIC 1910 hci_send_cmd(&hci_read_local_name); 1911 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1912 break; 1913 #endif 1914 /* fall through */ 1915 1916 case HCI_INIT_SEND_BAUD_CHANGE: 1917 if (need_baud_change) { 1918 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1919 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1920 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1921 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1922 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1923 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1924 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1925 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1926 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1927 btstack_run_loop_add_timer(&hci_stack->timeout); 1928 } 1929 break; 1930 } 1931 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1932 1933 /* fall through */ 1934 1935 case HCI_INIT_CUSTOM_INIT: 1936 case HCI_INIT_CUSTOM_PRE_INIT: 1937 // Custom initialization 1938 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1939 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1940 bool send_cmd = false; 1941 switch (hci_stack->chipset_result){ 1942 case BTSTACK_CHIPSET_VALID_COMMAND: 1943 send_cmd = true; 1944 switch (hci_stack->substate){ 1945 case HCI_INIT_CUSTOM_INIT: 1946 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1947 break; 1948 case HCI_INIT_CUSTOM_PRE_INIT: 1949 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1950 break; 1951 default: 1952 btstack_assert(false); 1953 break; 1954 } 1955 break; 1956 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1957 send_cmd = true; 1958 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1959 log_info("CSR Warm Boot"); 1960 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1961 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1962 btstack_run_loop_add_timer(&hci_stack->timeout); 1963 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1964 && hci_stack->config 1965 && hci_stack->chipset 1966 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1967 && hci_stack->hci_transport->set_baudrate 1968 && hci_transport_uart_get_main_baud_rate()){ 1969 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1970 } else { 1971 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1972 } 1973 break; 1974 default: 1975 break; 1976 } 1977 1978 if (send_cmd){ 1979 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1980 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1981 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1982 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1983 break; 1984 } 1985 log_info("Init script done"); 1986 1987 // Custom Pre-Init complete, start regular init with HCI Reset 1988 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1989 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1990 hci_send_cmd(&hci_reset); 1991 break; 1992 } 1993 1994 // Init script download on Broadcom chipsets causes: 1995 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1996 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1997 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1998 1999 // - baud rate to reset, restore UART baud rate if needed 2000 if (need_baud_change) { 2001 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2002 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2003 hci_stack->hci_transport->set_baudrate(baud_rate); 2004 } 2005 2006 uint16_t bcm_delay_ms = 300; 2007 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2008 // -> Work around: wait here. 2009 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2010 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2011 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2012 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2013 btstack_run_loop_add_timer(&hci_stack->timeout); 2014 break; 2015 } 2016 } 2017 #endif 2018 /* fall through */ 2019 2020 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2021 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2022 hci_send_cmd(&hci_read_local_supported_commands); 2023 break; 2024 case HCI_INIT_READ_BD_ADDR: 2025 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2026 hci_send_cmd(&hci_read_bd_addr); 2027 break; 2028 case HCI_INIT_READ_BUFFER_SIZE: 2029 // only read buffer size if supported 2030 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2031 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2032 hci_send_cmd(&hci_read_buffer_size); 2033 break; 2034 } 2035 2036 /* fall through */ 2037 2038 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2039 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2040 hci_send_cmd(&hci_read_local_supported_features); 2041 break; 2042 2043 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2044 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2045 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2046 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2047 break; 2048 case HCI_INIT_HOST_BUFFER_SIZE: 2049 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2050 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2051 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2052 break; 2053 #endif 2054 2055 case HCI_INIT_SET_EVENT_MASK: 2056 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2057 if (hci_le_supported()){ 2058 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2059 } else { 2060 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2061 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2062 } 2063 break; 2064 2065 case HCI_INIT_SET_EVENT_MASK_2: 2066 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2067 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2068 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2069 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2070 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2071 // Encryption Change Event v2 - bit 25 2072 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2073 break; 2074 } 2075 2076 #ifdef ENABLE_CLASSIC 2077 /* fall through */ 2078 2079 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2080 if (hci_classic_supported() && gap_ssp_supported()){ 2081 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2082 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2083 break; 2084 } 2085 2086 /* fall through */ 2087 2088 case HCI_INIT_WRITE_INQUIRY_MODE: 2089 if (hci_classic_supported()){ 2090 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2091 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2092 break; 2093 } 2094 2095 /* fall through */ 2096 2097 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2098 // skip write secure connections host support if not supported or disabled 2099 if (hci_classic_supported() && hci_stack->secure_connections_enable 2100 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2101 hci_stack->secure_connections_active = true; 2102 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2103 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2104 break; 2105 } 2106 2107 /* fall through */ 2108 2109 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2110 // skip set min encryption key size 2111 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2112 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2113 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2114 break; 2115 } 2116 2117 #ifdef ENABLE_SCO_OVER_HCI 2118 /* fall through */ 2119 2120 // only sent if ENABLE_SCO_OVER_HCI is defined 2121 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2122 // skip write synchronous flow control if not supported 2123 if (hci_classic_supported() 2124 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2125 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2126 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2127 break; 2128 } 2129 /* fall through */ 2130 2131 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2132 // skip write default erroneous data reporting if not supported 2133 if (hci_classic_supported() 2134 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2135 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2136 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2137 break; 2138 } 2139 #endif 2140 2141 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2142 /* fall through */ 2143 2144 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2145 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2146 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2147 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2148 #ifdef ENABLE_SCO_OVER_HCI 2149 log_info("BCM: Route SCO data via HCI transport"); 2150 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2151 #endif 2152 #ifdef ENABLE_SCO_OVER_PCM 2153 log_info("BCM: Route SCO data via PCM interface"); 2154 #ifdef ENABLE_BCM_PCM_WBS 2155 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2156 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2157 #else 2158 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2159 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2160 #endif 2161 #endif 2162 break; 2163 } 2164 #endif 2165 2166 #ifdef ENABLE_SCO_OVER_PCM 2167 /* fall through */ 2168 2169 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2170 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2171 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2172 log_info("BCM: Config PCM interface for I2S"); 2173 #ifdef ENABLE_BCM_PCM_WBS 2174 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2175 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2176 #else 2177 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2178 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2179 #endif 2180 break; 2181 } 2182 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2183 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2184 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2185 log_info("BCM: Config PCM Data format"); 2186 // msb first, fill bits 0, left justified 2187 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2188 break; 2189 } 2190 #endif 2191 #endif 2192 2193 #ifdef ENABLE_BLE 2194 /* fall through */ 2195 2196 // LE INIT 2197 case HCI_INIT_LE_READ_BUFFER_SIZE: 2198 if (hci_le_supported()){ 2199 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2200 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2201 hci_send_cmd(&hci_le_read_buffer_size_v2); 2202 } else { 2203 hci_send_cmd(&hci_le_read_buffer_size); 2204 } 2205 break; 2206 } 2207 2208 /* fall through */ 2209 2210 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2211 // skip write le host if not supported (e.g. on LE only EM9301) 2212 if (hci_le_supported() 2213 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2214 // LE Supported Host = 1, Simultaneous Host = 0 2215 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2216 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2217 break; 2218 } 2219 2220 /* fall through */ 2221 2222 case HCI_INIT_LE_SET_EVENT_MASK: 2223 if (hci_le_supported()){ 2224 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2225 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2226 break; 2227 } 2228 #endif 2229 2230 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2231 /* fall through */ 2232 2233 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2234 if (hci_le_supported() 2235 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2236 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2237 hci_send_cmd(&hci_le_read_maximum_data_length); 2238 break; 2239 } 2240 2241 /* fall through */ 2242 2243 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2244 if (hci_le_supported() 2245 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2246 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2247 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2248 break; 2249 } 2250 #endif 2251 2252 #ifdef ENABLE_LE_CENTRAL 2253 /* fall through */ 2254 2255 case HCI_INIT_READ_WHITE_LIST_SIZE: 2256 if (hci_le_supported()){ 2257 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2258 hci_send_cmd(&hci_le_read_white_list_size); 2259 break; 2260 } 2261 2262 #endif 2263 2264 #ifdef ENABLE_LE_PERIPHERAL 2265 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2266 /* fall through */ 2267 2268 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2269 if (hci_extended_advertising_supported()){ 2270 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2271 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2272 break; 2273 } 2274 #endif 2275 #endif 2276 /* fall through */ 2277 2278 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2279 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2280 if (hci_le_supported()) { 2281 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2282 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2283 break; 2284 } 2285 #endif 2286 2287 /* fall through */ 2288 2289 case HCI_INIT_DONE: 2290 hci_stack->substate = HCI_INIT_DONE; 2291 // main init sequence complete 2292 #ifdef ENABLE_CLASSIC 2293 // check if initial Classic GAP Tasks are completed 2294 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2295 hci_run_gap_tasks_classic(); 2296 break; 2297 } 2298 #endif 2299 #ifdef ENABLE_BLE 2300 #ifdef ENABLE_LE_CENTRAL 2301 // check if initial LE GAP Tasks are completed 2302 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2303 hci_run_general_gap_le(); 2304 break; 2305 } 2306 #endif 2307 #endif 2308 hci_init_done(); 2309 break; 2310 2311 default: 2312 return; 2313 } 2314 } 2315 2316 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2317 bool command_completed = false; 2318 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2319 uint16_t opcode = little_endian_read_16(packet,3); 2320 if (opcode == hci_stack->last_cmd_opcode){ 2321 command_completed = true; 2322 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2323 } else { 2324 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2325 } 2326 } 2327 2328 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2329 uint8_t status = packet[2]; 2330 uint16_t opcode = little_endian_read_16(packet,4); 2331 if (opcode == hci_stack->last_cmd_opcode){ 2332 if (status){ 2333 command_completed = true; 2334 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2335 } else { 2336 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2337 } 2338 } else { 2339 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2340 } 2341 } 2342 #ifndef HAVE_HOST_CONTROLLER_API 2343 // Vendor == CSR 2344 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2345 // TODO: track actual command 2346 command_completed = true; 2347 } 2348 2349 // Vendor == Toshiba 2350 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2351 // TODO: track actual command 2352 command_completed = true; 2353 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2354 hci_stack->num_cmd_packets = 1; 2355 } 2356 #endif 2357 2358 return command_completed; 2359 } 2360 2361 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2362 2363 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2364 2365 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2366 2367 #ifndef HAVE_HOST_CONTROLLER_API 2368 2369 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2370 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2371 // 2372 // HCI Reset 2373 // Timeout 100 ms 2374 // HCI Reset 2375 // Command Complete Reset 2376 // HCI Read Local Version Information 2377 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2378 // hang... 2379 // 2380 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2381 if (!command_completed 2382 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2383 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2384 2385 uint16_t opcode = little_endian_read_16(packet,3); 2386 if (opcode == hci_reset.opcode){ 2387 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2388 return; 2389 } 2390 } 2391 2392 // CSR & H5 2393 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2394 if (!command_completed 2395 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2396 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2397 2398 uint16_t opcode = little_endian_read_16(packet,3); 2399 if (opcode == hci_reset.opcode){ 2400 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2401 return; 2402 } 2403 } 2404 2405 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2406 // fix: Correct substate and behave as command below 2407 if (command_completed){ 2408 switch (hci_stack->substate){ 2409 case HCI_INIT_SEND_RESET: 2410 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2411 break; 2412 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2413 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2414 break; 2415 default: 2416 break; 2417 } 2418 } 2419 2420 #endif 2421 2422 if (!command_completed) return; 2423 2424 bool need_baud_change = false; 2425 bool need_addr_change = false; 2426 2427 #ifndef HAVE_HOST_CONTROLLER_API 2428 need_baud_change = hci_stack->config 2429 && hci_stack->chipset 2430 && hci_stack->chipset->set_baudrate_command 2431 && hci_stack->hci_transport->set_baudrate 2432 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2433 2434 need_addr_change = hci_stack->custom_bd_addr_set 2435 && hci_stack->chipset 2436 && hci_stack->chipset->set_bd_addr_command; 2437 #endif 2438 2439 switch(hci_stack->substate){ 2440 2441 #ifndef HAVE_HOST_CONTROLLER_API 2442 case HCI_INIT_SEND_RESET: 2443 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2444 // fix: just correct substate and behave as command below 2445 2446 /* fall through */ 2447 #endif 2448 2449 case HCI_INIT_W4_SEND_RESET: 2450 btstack_run_loop_remove_timer(&hci_stack->timeout); 2451 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2452 return; 2453 2454 #ifndef HAVE_HOST_CONTROLLER_API 2455 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2456 // for STLC2500D, baud rate change already happened. 2457 // for others, baud rate gets changed now 2458 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2459 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2460 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2461 hci_stack->hci_transport->set_baudrate(baud_rate); 2462 } 2463 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2464 return; 2465 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2466 btstack_run_loop_remove_timer(&hci_stack->timeout); 2467 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2468 return; 2469 case HCI_INIT_W4_CUSTOM_INIT: 2470 // repeat custom init 2471 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2472 return; 2473 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2474 // repeat custom init 2475 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2476 return; 2477 #endif 2478 2479 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2480 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2481 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2482 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2483 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2484 return; 2485 } 2486 if (need_addr_change){ 2487 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2488 return; 2489 } 2490 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2491 return; 2492 #ifndef HAVE_HOST_CONTROLLER_API 2493 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2494 if (need_baud_change){ 2495 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2496 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2497 hci_stack->hci_transport->set_baudrate(baud_rate); 2498 } 2499 if (need_addr_change){ 2500 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2501 return; 2502 } 2503 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2504 return; 2505 case HCI_INIT_W4_SET_BD_ADDR: 2506 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2507 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2508 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2509 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2510 return; 2511 } 2512 // skipping st warm boot 2513 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2514 return; 2515 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2516 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2517 return; 2518 #endif 2519 2520 case HCI_INIT_DONE: 2521 // set state if we came here by fall through 2522 hci_stack->substate = HCI_INIT_DONE; 2523 return; 2524 2525 default: 2526 break; 2527 } 2528 hci_initializing_next_state(); 2529 } 2530 2531 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2532 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2533 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2534 // check if we have been aware of the HCI connection 2535 switch (conn->state){ 2536 case SENT_CREATE_CONNECTION: 2537 case RECEIVED_CONNECTION_REQUEST: 2538 case ACCEPTED_CONNECTION_REQUEST: 2539 break; 2540 default: 2541 return; 2542 } 2543 2544 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2545 bd_addr_t bd_address; 2546 (void)memcpy(&bd_address, conn->address, 6); 2547 2548 #ifdef ENABLE_CLASSIC 2549 // cache needed data 2550 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2551 #endif 2552 2553 // connection failed, remove entry 2554 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2555 btstack_memory_hci_connection_free( conn ); 2556 2557 #ifdef ENABLE_CLASSIC 2558 // notify client if dedicated bonding 2559 if (notify_dedicated_bonding_failed){ 2560 log_info("hci notify_dedicated_bonding_failed"); 2561 hci_emit_dedicated_bonding_result(bd_address, status); 2562 } 2563 2564 // if authentication error, also delete link key 2565 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2566 gap_drop_link_key_for_bd_addr(bd_address); 2567 } 2568 #else 2569 UNUSED(status); 2570 #endif 2571 } 2572 2573 #ifdef ENABLE_CLASSIC 2574 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2575 // SSP Controller 2576 if (features[6] & (1 << 3)){ 2577 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2578 } 2579 // eSCO 2580 if (features[3] & (1<<7)){ 2581 conn->remote_supported_features[0] |= 1; 2582 } 2583 // Extended features 2584 if (features[7] & (1<<7)){ 2585 conn->remote_supported_features[0] |= 2; 2586 } 2587 // SCO packet types 2588 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2589 } 2590 2591 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2592 // SSP Host 2593 if (features[0] & (1 << 0)){ 2594 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2595 } 2596 // SC Host 2597 if (features[0] & (1 << 3)){ 2598 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2599 } 2600 } 2601 2602 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2603 // SC Controller 2604 if (features[1] & (1 << 0)){ 2605 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2606 } 2607 } 2608 2609 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2610 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2611 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2612 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2613 if (conn->bonding_flags & BONDING_DEDICATED){ 2614 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2615 } 2616 } 2617 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2618 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2619 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2620 } 2621 2622 #endif 2623 2624 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2625 // handle BT initialization 2626 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2627 hci_initializing_event_handler(packet, size); 2628 } 2629 2630 // help with BT sleep 2631 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2632 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2633 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2634 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2635 hci_initializing_next_state(); 2636 } 2637 } 2638 2639 #ifdef ENABLE_CLASSIC 2640 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2641 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2642 conn->requested_security_level = LEVEL_0; 2643 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2644 hci_emit_security_level(conn->con_handle, security_level); 2645 2646 // dedicated bonding 2647 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2648 conn->bonding_flags &= ~BONDING_DEDICATED; 2649 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2650 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2651 // emit dedicated bonding complete, don't disconnect 2652 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2653 #else 2654 // request disconnect, event is emitted after disconnect 2655 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2656 #endif 2657 } 2658 } 2659 2660 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2661 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2662 conn->encryption_key_size = encryption_key_size; 2663 2664 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2665 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2666 hci_handle_mutual_authentication_completed(conn); 2667 } else { 2668 // otherwise trigger remote feature request and send authentication request 2669 hci_trigger_remote_features_for_connection(conn); 2670 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2671 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2672 } 2673 } 2674 } 2675 #endif 2676 2677 static void hci_store_local_supported_commands(const uint8_t * packet){ 2678 // create mapping table 2679 #define X(name, offset, bit) { offset, bit }, 2680 static struct { 2681 uint8_t byte_offset; 2682 uint8_t bit_position; 2683 } supported_hci_commands_map [] = { 2684 SUPPORTED_HCI_COMMANDS 2685 }; 2686 #undef X 2687 2688 // create names for debug purposes 2689 #ifdef ENABLE_LOG_DEBUG 2690 #define X(name, offset, bit) #name, 2691 static const char * command_names[] = { 2692 SUPPORTED_HCI_COMMANDS 2693 }; 2694 #undef X 2695 #endif 2696 2697 hci_stack->local_supported_commands = 0; 2698 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2699 uint16_t i; 2700 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2701 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2702 #ifdef ENABLE_LOG_DEBUG 2703 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); 2704 #else 2705 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2706 #endif 2707 hci_stack->local_supported_commands |= (1LU << i); 2708 } 2709 } 2710 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2711 } 2712 2713 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2714 UNUSED(size); 2715 2716 uint16_t manufacturer; 2717 #ifdef ENABLE_CLASSIC 2718 hci_con_handle_t handle; 2719 hci_connection_t * conn; 2720 #endif 2721 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2722 uint8_t status; 2723 #endif 2724 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2725 le_audio_cig_t * cig; 2726 #endif 2727 2728 // get num cmd packets - limit to 1 to reduce complexity 2729 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2730 2731 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2732 switch (opcode){ 2733 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2734 if (packet[5]) break; 2735 // terminate, name 248 chars 2736 packet[6+248] = 0; 2737 log_info("local name: %s", &packet[6]); 2738 break; 2739 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2740 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2741 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2742 uint16_t acl_len = little_endian_read_16(packet, 6); 2743 uint16_t sco_len = packet[8]; 2744 2745 // determine usable ACL/SCO payload size 2746 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2747 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2748 2749 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2750 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2751 2752 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2753 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2754 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2755 } 2756 break; 2757 case HCI_OPCODE_HCI_READ_RSSI: 2758 if (packet[5] == ERROR_CODE_SUCCESS){ 2759 uint8_t event[5]; 2760 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2761 event[1] = 3; 2762 (void)memcpy(&event[2], &packet[6], 3); 2763 hci_emit_event(event, sizeof(event), 1); 2764 } 2765 break; 2766 #ifdef ENABLE_BLE 2767 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2768 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2769 hci_stack->le_iso_packets_total_num = packet[11]; 2770 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2771 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2772 2773 /* fall through */ 2774 2775 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2776 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2777 hci_stack->le_acl_packets_total_num = packet[8]; 2778 // determine usable ACL payload size 2779 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2780 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2781 } 2782 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); 2783 break; 2784 #endif 2785 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2786 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2787 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2788 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2789 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); 2790 break; 2791 #endif 2792 #ifdef ENABLE_LE_CENTRAL 2793 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2794 hci_stack->le_whitelist_capacity = packet[6]; 2795 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2796 break; 2797 #endif 2798 #ifdef ENABLE_LE_PERIPHERAL 2799 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2800 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2801 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2802 break; 2803 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2804 if (hci_stack->le_advertising_set_in_current_command != 0) { 2805 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2806 hci_stack->le_advertising_set_in_current_command = 0; 2807 if (advertising_set == NULL) break; 2808 uint8_t adv_status = packet[6]; 2809 uint8_t tx_power = packet[7]; 2810 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 }; 2811 if (adv_status == 0){ 2812 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2813 } 2814 hci_emit_event(event, sizeof(event), 1); 2815 } 2816 break; 2817 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2818 if (hci_stack->le_advertising_set_in_current_command != 0) { 2819 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2820 hci_stack->le_advertising_set_in_current_command = 0; 2821 if (advertising_set == NULL) break; 2822 uint8_t adv_status = packet[5]; 2823 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2824 if (adv_status == 0){ 2825 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2826 } 2827 hci_emit_event(event, sizeof(event), 1); 2828 } 2829 break; 2830 #endif 2831 #endif 2832 case HCI_OPCODE_HCI_READ_BD_ADDR: 2833 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2834 log_info("Local Address, Status: 0x%02x: Addr: %s", packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(hci_stack->local_bd_addr)); 2835 #ifdef ENABLE_CLASSIC 2836 if (hci_stack->link_key_db){ 2837 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2838 } 2839 #endif 2840 break; 2841 #ifdef ENABLE_CLASSIC 2842 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2843 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2844 break; 2845 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2846 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2847 if (status == ERROR_CODE_SUCCESS) { 2848 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2849 } else { 2850 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2851 } 2852 break; 2853 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2854 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2855 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2856 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2857 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2858 hci_emit_event(event, sizeof(event), 1); 2859 } 2860 break; 2861 #endif 2862 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2863 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2864 2865 #ifdef ENABLE_CLASSIC 2866 // determine usable ACL packet types based on host buffer size and supported features 2867 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]); 2868 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2869 // determine usable SCO packet types based on supported features 2870 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2871 &hci_stack->local_supported_features[0]); 2872 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2873 #endif 2874 // Classic/LE 2875 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2876 break; 2877 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2878 manufacturer = little_endian_read_16(packet, 10); 2879 // map Cypress & Infineon to Broadcom 2880 switch (manufacturer){ 2881 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2882 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2883 log_info("Treat Cypress/Infineon as Broadcom"); 2884 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2885 little_endian_store_16(packet, 10, manufacturer); 2886 break; 2887 default: 2888 break; 2889 } 2890 hci_stack->manufacturer = manufacturer; 2891 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2892 break; 2893 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2894 hci_store_local_supported_commands(packet); 2895 break; 2896 #ifdef ENABLE_CLASSIC 2897 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2898 if (packet[5]) return; 2899 hci_stack->synchronous_flow_control_enabled = 1; 2900 break; 2901 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2902 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2903 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2904 conn = hci_connection_for_handle(handle); 2905 if (conn != NULL) { 2906 uint8_t key_size = 0; 2907 if (status == 0){ 2908 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2909 log_info("Handle %04x key Size: %u", handle, key_size); 2910 } else { 2911 key_size = 1; 2912 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2913 } 2914 hci_handle_read_encryption_key_size_complete(conn, key_size); 2915 } 2916 break; 2917 // assert pairing complete event is emitted. 2918 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2919 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2920 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2921 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2922 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2923 // lookup connection by gap pairing addr 2924 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2925 if (conn == NULL) break; 2926 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2927 break; 2928 2929 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2930 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2931 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2932 uint8_t event[67]; 2933 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2934 event[1] = 65; 2935 (void)memset(&event[2], 0, 65); 2936 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2937 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2938 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2939 event[2] = 3; 2940 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2941 } else { 2942 event[2] = 1; 2943 } 2944 } 2945 hci_emit_event(event, sizeof(event), 0); 2946 break; 2947 } 2948 2949 // note: only needed if user does not provide OOB data 2950 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2951 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2952 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2953 if (conn == NULL) break; 2954 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2955 break; 2956 #endif 2957 #endif 2958 #ifdef ENABLE_BLE 2959 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2960 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2961 // lookup CIG 2962 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2963 if (cig != NULL){ 2964 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2965 uint8_t i = 0; 2966 if (status == ERROR_CODE_SUCCESS){ 2967 // assign CIS handles to pre-allocated CIS 2968 btstack_linked_list_iterator_t it; 2969 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2970 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2971 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2972 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2973 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2974 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2975 iso_stream->cis_handle = cis_handle; 2976 cig->cis_con_handles[i] = cis_handle; 2977 i++; 2978 } 2979 } 2980 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2981 hci_emit_cig_created(cig, status); 2982 } else { 2983 hci_emit_cig_created(cig, status); 2984 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2985 } 2986 } 2987 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2988 break; 2989 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2990 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2991 if (status != ERROR_CODE_SUCCESS){ 2992 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2993 } 2994 break; 2995 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2996 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2997 if (status != ERROR_CODE_SUCCESS){ 2998 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2999 } 3000 break; 3001 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3002 // lookup BIG by state 3003 btstack_linked_list_iterator_t it; 3004 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3005 while (btstack_linked_list_iterator_has_next(&it)) { 3006 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3007 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3008 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 3009 if (status == ERROR_CODE_SUCCESS){ 3010 big->state_vars.next_bis++; 3011 if (big->state_vars.next_bis == big->num_bis){ 3012 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3013 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3014 } else { 3015 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3016 } 3017 } else { 3018 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3019 big->state_vars.status = status; 3020 } 3021 return; 3022 } 3023 } 3024 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3025 while (btstack_linked_list_iterator_has_next(&it)) { 3026 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3027 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3028 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 3029 if (status == ERROR_CODE_SUCCESS){ 3030 big_sync->state_vars.next_bis++; 3031 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3032 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3033 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3034 } else { 3035 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3036 } 3037 } else { 3038 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3039 big_sync->state_vars.status = status; 3040 } 3041 return; 3042 } 3043 } 3044 // Lookup CIS via active group operation 3045 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3046 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3047 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3048 3049 // lookup CIS by state 3050 btstack_linked_list_iterator_t it; 3051 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3052 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 3053 while (btstack_linked_list_iterator_has_next(&it)){ 3054 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3055 handle = iso_stream->cis_handle; 3056 bool emit_cis_created = false; 3057 switch (iso_stream->state){ 3058 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3059 if (status != ERROR_CODE_SUCCESS){ 3060 emit_cis_created = true; 3061 break; 3062 } 3063 if (iso_stream->max_sdu_c_to_p > 0){ 3064 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3065 } else { 3066 emit_cis_created = true; 3067 } 3068 break; 3069 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3070 emit_cis_created = true; 3071 break; 3072 default: 3073 break; 3074 } 3075 if (emit_cis_created){ 3076 hci_cis_handle_created(iso_stream, status); 3077 } 3078 } 3079 } else { 3080 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3081 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3082 if (cig != NULL) { 3083 // emit cis created if all ISO Paths have been created 3084 // assume we are central 3085 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3086 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3087 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3088 // if outgoing has been setup, or incoming was setup but outgoing not required 3089 if ((cis_direction == 1) || (outgoing_needed == false)){ 3090 // lookup iso stream by cig/cis 3091 while (btstack_linked_list_iterator_has_next(&it)) { 3092 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3093 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3094 hci_cis_handle_created(iso_stream, status); 3095 } 3096 } 3097 } 3098 // next state 3099 cig->state_vars.next_cis++; 3100 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3101 } 3102 } 3103 } 3104 break; 3105 } 3106 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3107 // lookup BIG by state 3108 btstack_linked_list_iterator_t it; 3109 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3110 while (btstack_linked_list_iterator_has_next(&it)) { 3111 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3112 uint8_t big_handle = big_sync->big_handle; 3113 switch (big_sync->state){ 3114 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3115 btstack_linked_list_iterator_remove(&it); 3116 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3117 return; 3118 default: 3119 btstack_linked_list_iterator_remove(&it); 3120 hci_emit_big_sync_stopped(big_handle); 3121 return; 3122 } 3123 } 3124 break; 3125 } 3126 #endif 3127 #endif 3128 default: 3129 break; 3130 } 3131 } 3132 3133 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3134 UNUSED(size); 3135 3136 // get num cmd packets - limit to 1 to reduce complexity 3137 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3138 3139 // get opcode and command status 3140 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3141 3142 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3143 uint8_t status = hci_event_command_status_get_status(packet); 3144 #endif 3145 3146 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3147 bd_addr_type_t addr_type; 3148 bd_addr_t addr; 3149 #endif 3150 3151 switch (opcode){ 3152 #ifdef ENABLE_CLASSIC 3153 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3154 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3155 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3156 #endif 3157 #ifdef ENABLE_LE_CENTRAL 3158 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3159 #endif 3160 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3161 addr_type = hci_stack->outgoing_addr_type; 3162 memcpy(addr, hci_stack->outgoing_addr, 6); 3163 3164 // reset outgoing address info 3165 memset(hci_stack->outgoing_addr, 0, 6); 3166 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3167 3168 // on error 3169 if (status != ERROR_CODE_SUCCESS){ 3170 #ifdef ENABLE_LE_CENTRAL 3171 if (hci_is_le_connection_type(addr_type)){ 3172 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3173 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3174 } 3175 #endif 3176 // error => outgoing connection failed 3177 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3178 if (conn != NULL){ 3179 hci_handle_connection_failed(conn, status); 3180 } 3181 } 3182 break; 3183 #endif 3184 #ifdef ENABLE_CLASSIC 3185 case HCI_OPCODE_HCI_INQUIRY: 3186 if (status == ERROR_CODE_SUCCESS) { 3187 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3188 } else { 3189 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3190 } 3191 break; 3192 #endif 3193 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3194 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3195 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3196 if (status == ERROR_CODE_SUCCESS){ 3197 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3198 } else { 3199 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3200 } 3201 break; 3202 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3203 default: 3204 break; 3205 } 3206 } 3207 3208 #ifdef ENABLE_BLE 3209 static void event_handle_le_connection_complete(const uint8_t * packet){ 3210 bd_addr_t addr; 3211 bd_addr_type_t addr_type; 3212 hci_connection_t * conn; 3213 3214 // read fields 3215 uint8_t status = packet[3]; 3216 hci_role_t role = (hci_role_t) packet[6]; 3217 3218 // support different connection complete events 3219 uint16_t conn_interval; 3220 switch (packet[2]){ 3221 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3222 conn_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3223 break; 3224 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3225 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3226 conn_interval = hci_subevent_le_enhanced_connection_complete_v1_get_conn_interval(packet); 3227 break; 3228 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3229 conn_interval = hci_subevent_le_enhanced_connection_complete_v2_get_conn_interval(packet); 3230 break; 3231 #endif 3232 default: 3233 btstack_unreachable(); 3234 return; 3235 } 3236 3237 // Connection management 3238 reverse_bd_addr(&packet[8], addr); 3239 addr_type = (bd_addr_type_t)packet[7]; 3240 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3241 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3242 3243 #ifdef ENABLE_LE_CENTRAL 3244 // handle error: error is reported only to the initiator -> outgoing connection 3245 if (status){ 3246 3247 // handle cancelled outgoing connection 3248 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3249 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3250 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3251 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3252 // reset state 3253 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3254 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3255 // get outgoing connection conn struct for direct connect 3256 conn = gap_get_outgoing_connection(); 3257 } 3258 3259 // outgoing le connection establishment is done 3260 if (conn){ 3261 // remove entry 3262 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3263 btstack_memory_hci_connection_free( conn ); 3264 } 3265 return; 3266 } 3267 #endif 3268 3269 // on success, both hosts receive connection complete event 3270 if (role == HCI_ROLE_MASTER){ 3271 #ifdef ENABLE_LE_CENTRAL 3272 // if we're master on an le connection, it was an outgoing connection and we're done with it 3273 // note: no hci_connection_t object exists yet for connect with whitelist 3274 if (hci_is_le_connection_type(addr_type)){ 3275 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3276 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3277 } 3278 #endif 3279 } else { 3280 #ifdef ENABLE_LE_PERIPHERAL 3281 // if we're slave, it was an incoming connection, advertisements have stopped 3282 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3283 #endif 3284 } 3285 3286 // LE connections are auto-accepted, so just create a connection if there isn't one already 3287 if (!conn){ 3288 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3289 } 3290 3291 // no memory, sorry. 3292 if (!conn){ 3293 return; 3294 } 3295 3296 conn->state = OPEN; 3297 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3298 conn->le_connection_interval = conn_interval; 3299 3300 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3301 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3302 3303 #ifdef ENABLE_LE_PERIPHERAL 3304 if (role == HCI_ROLE_SLAVE){ 3305 hci_update_advertisements_enabled_for_current_roles(); 3306 } 3307 #endif 3308 3309 // init unenhanced att bearer mtu 3310 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3311 conn->att_connection.mtu_exchanged = false; 3312 3313 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3314 3315 // restart timer 3316 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3317 // btstack_run_loop_add_timer(&conn->timeout); 3318 3319 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3320 3321 hci_emit_nr_connections_changed(); 3322 } 3323 #endif 3324 3325 #ifdef ENABLE_CLASSIC 3326 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){ 3327 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3328 // LEVEL_4 is tested by l2cap 3329 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3330 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3331 if (level >= LEVEL_3){ 3332 // MITM not possible without keyboard or display 3333 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3334 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3335 3336 // MITM possible if one side has keyboard and the other has keyboard or display 3337 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3338 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3339 3340 // MITM not possible if one side has only display and other side has no keyboard 3341 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3342 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3343 } 3344 // LEVEL 2 requires SSP, which is a given 3345 return true; 3346 } 3347 3348 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3349 // get requested security level 3350 gap_security_level_t requested_security_level = conn->requested_security_level; 3351 if (hci_stack->gap_secure_connections_only_mode){ 3352 requested_security_level = LEVEL_4; 3353 } 3354 3355 // assess security: LEVEL 4 requires SC 3356 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3357 if ((requested_security_level == LEVEL_4) && 3358 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3359 !hci_remote_sc_enabled(conn)){ 3360 log_info("Level 4 required, but SC not supported -> abort"); 3361 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3362 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3363 return; 3364 } 3365 3366 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3367 // - GAP/MOD/NBON/BV-02-C 3368 // - GAP/DM/NBON/BV-01-C 3369 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3370 switch (conn->io_cap_response_auth_req){ 3371 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3372 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3373 if (hci_stack->bondable == false){ 3374 log_info("Dedicated vs. non-bondable -> abort"); 3375 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3376 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3377 return; 3378 } 3379 default: 3380 break; 3381 } 3382 } 3383 3384 // assess security based on io capabilities 3385 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3386 // responder: fully validate io caps of both sides as well as OOB data 3387 bool security_possible = false; 3388 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3389 3390 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3391 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3392 // so we merge the OOB data availability 3393 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3394 if (conn->classic_oob_c_192 != NULL){ 3395 have_oob_data |= 1; 3396 } 3397 if (conn->classic_oob_c_256 != NULL){ 3398 have_oob_data |= 2; 3399 } 3400 // for up to Level 3, either P-192 as well as P-256 will do 3401 // 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 3402 // if remote does not SC, we should not receive P-256 data either 3403 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3404 security_possible = true; 3405 } 3406 // for Level 4, P-256 is needed 3407 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3408 security_possible = true; 3409 } 3410 #endif 3411 3412 if (security_possible == false){ 3413 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3414 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3415 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3416 return; 3417 } 3418 } else { 3419 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3420 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3421 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3422 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3423 log_info("Level 3+ required, but no input/output -> abort"); 3424 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3425 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3426 return; 3427 } 3428 #endif 3429 #endif 3430 } 3431 3432 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3433 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3434 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3435 } else { 3436 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3437 } 3438 #endif 3439 } 3440 3441 #endif 3442 3443 static void event_handler(uint8_t *packet, uint16_t size){ 3444 3445 uint16_t event_length = packet[1]; 3446 3447 // assert packet is complete 3448 if (size != (event_length + 2u)){ 3449 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3450 return; 3451 } 3452 3453 hci_con_handle_t handle; 3454 hci_connection_t * conn; 3455 int i; 3456 3457 #ifdef ENABLE_CLASSIC 3458 hci_link_type_t link_type; 3459 bd_addr_t addr; 3460 bd_addr_type_t addr_type; 3461 #endif 3462 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3463 hci_iso_stream_t * iso_stream; 3464 le_audio_big_t * big; 3465 le_audio_big_sync_t * big_sync; 3466 #endif 3467 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3468 btstack_linked_list_iterator_t it; 3469 #endif 3470 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3471 uint8_t advertising_handle; 3472 #endif 3473 3474 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3475 3476 switch (hci_event_packet_get_type(packet)) { 3477 3478 case HCI_EVENT_COMMAND_COMPLETE: 3479 handle_command_complete_event(packet, size); 3480 break; 3481 3482 case HCI_EVENT_COMMAND_STATUS: 3483 handle_command_status_event(packet, size); 3484 break; 3485 3486 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3487 if (size < 3) return; 3488 uint16_t num_handles = packet[2]; 3489 if (size != (3u + num_handles * 4u)) return; 3490 #ifdef ENABLE_CLASSIC 3491 bool notify_sco = false; 3492 #endif 3493 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3494 bool notify_iso = false; 3495 #endif 3496 uint16_t offset = 3; 3497 for (i=0; i<num_handles;i++){ 3498 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3499 offset += 2u; 3500 uint16_t num_packets = little_endian_read_16(packet, offset); 3501 offset += 2u; 3502 3503 conn = hci_connection_for_handle(handle); 3504 if (conn != NULL) { 3505 3506 if (conn->num_packets_sent >= num_packets) { 3507 conn->num_packets_sent -= num_packets; 3508 } else { 3509 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3510 conn->num_packets_sent = 0; 3511 } 3512 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3513 #ifdef ENABLE_CLASSIC 3514 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3515 notify_sco = true; 3516 } 3517 #endif 3518 } 3519 3520 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3521 hci_controller_dump_packets(); 3522 #endif 3523 3524 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3525 if (conn == NULL){ 3526 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3527 if (iso_stream != NULL){ 3528 if (iso_stream->num_packets_sent >= num_packets) { 3529 iso_stream->num_packets_sent -= num_packets; 3530 } else { 3531 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3532 iso_stream->num_packets_sent = 0; 3533 } 3534 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3535 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3536 if (big != NULL){ 3537 big->num_completed_timestamp_current_valid = true; 3538 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3539 } 3540 } 3541 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3542 num_packets, handle, iso_stream->num_packets_sent); 3543 notify_iso = true; 3544 } 3545 } 3546 #endif 3547 } 3548 3549 #ifdef ENABLE_CLASSIC 3550 if (notify_sco){ 3551 hci_notify_if_sco_can_send_now(); 3552 } 3553 #endif 3554 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3555 if (notify_iso){ 3556 hci_iso_notify_can_send_now(); 3557 } 3558 #endif 3559 break; 3560 } 3561 3562 #ifdef ENABLE_CLASSIC 3563 case HCI_EVENT_FLUSH_OCCURRED: 3564 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3565 handle = hci_event_flush_occurred_get_handle(packet); 3566 conn = hci_connection_for_handle(handle); 3567 if (conn) { 3568 log_info("Flush occurred, disconnect 0x%04x", handle); 3569 conn->state = SEND_DISCONNECT; 3570 } 3571 break; 3572 3573 case HCI_EVENT_INQUIRY_COMPLETE: 3574 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3575 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3576 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3577 hci_emit_event(event, sizeof(event), 1); 3578 } 3579 break; 3580 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3581 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3582 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3583 } 3584 break; 3585 case HCI_EVENT_CONNECTION_REQUEST: 3586 reverse_bd_addr(&packet[2], addr); 3587 link_type = (hci_link_type_t) packet[11]; 3588 3589 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3590 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3591 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3592 bd_addr_copy(hci_stack->decline_addr, addr); 3593 break; 3594 } 3595 3596 if (hci_stack->gap_classic_accept_callback != NULL){ 3597 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3598 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3599 bd_addr_copy(hci_stack->decline_addr, addr); 3600 break; 3601 } 3602 } 3603 3604 // TODO: eval COD 8-10 3605 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3606 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3607 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3608 if (!conn) { 3609 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3610 } 3611 if (!conn) { 3612 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3613 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3614 bd_addr_copy(hci_stack->decline_addr, addr); 3615 hci_run(); 3616 // avoid event to higher layer 3617 return; 3618 } 3619 conn->state = RECEIVED_CONNECTION_REQUEST; 3620 // store info about eSCO 3621 if (link_type == HCI_LINK_TYPE_ESCO){ 3622 conn->remote_supported_features[0] |= 1; 3623 } 3624 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3625 if (addr_type == BD_ADDR_TYPE_SCO){ 3626 hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3627 btstack_assert(acl_conn != NULL); 3628 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3629 } 3630 hci_run(); 3631 break; 3632 3633 case HCI_EVENT_CONNECTION_COMPLETE: 3634 // Connection management 3635 reverse_bd_addr(&packet[5], addr); 3636 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3637 addr_type = BD_ADDR_TYPE_ACL; 3638 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3639 if (conn) { 3640 switch (conn->state){ 3641 // expected states 3642 case ACCEPTED_CONNECTION_REQUEST: 3643 case SENT_CREATE_CONNECTION: 3644 break; 3645 // unexpected state -> ignore 3646 default: 3647 // don't forward event to app 3648 return; 3649 } 3650 if (!packet[2]){ 3651 conn->state = OPEN; 3652 conn->con_handle = little_endian_read_16(packet, 3); 3653 3654 // trigger write supervision timeout if we're master 3655 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3656 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3657 } 3658 3659 // trigger write automatic flush timeout 3660 if (hci_stack->automatic_flush_timeout != 0){ 3661 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3662 } 3663 3664 // restart timer 3665 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3666 btstack_run_loop_add_timer(&conn->timeout); 3667 3668 // trigger remote features for dedicated bonding 3669 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3670 hci_trigger_remote_features_for_connection(conn); 3671 } 3672 3673 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3674 3675 hci_emit_nr_connections_changed(); 3676 } else { 3677 // connection failed 3678 hci_handle_connection_failed(conn, packet[2]); 3679 } 3680 } 3681 break; 3682 3683 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3684 reverse_bd_addr(&packet[5], addr); 3685 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3686 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3687 btstack_assert(conn != NULL); 3688 3689 if (packet[2] != ERROR_CODE_SUCCESS){ 3690 // connection failed, remove entry 3691 hci_handle_connection_failed(conn, packet[2]); 3692 break; 3693 } 3694 3695 conn->state = OPEN; 3696 conn->con_handle = little_endian_read_16(packet, 3); 3697 3698 // update sco payload length for eSCO connections 3699 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3700 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3701 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3702 } 3703 3704 #ifdef ENABLE_SCO_OVER_HCI 3705 // update SCO 3706 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3707 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3708 } 3709 // trigger can send now 3710 if (hci_have_usb_transport()){ 3711 hci_stack->sco_can_send_now = true; 3712 } 3713 3714 // setup implict sco flow control 3715 conn->sco_tx_ready = 0; 3716 conn->sco_tx_active = 0; 3717 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3718 3719 #endif 3720 #ifdef HAVE_SCO_TRANSPORT 3721 // configure sco transport 3722 if (hci_stack->sco_transport != NULL){ 3723 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3724 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3725 } 3726 #endif 3727 break; 3728 3729 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3730 handle = little_endian_read_16(packet, 3); 3731 conn = hci_connection_for_handle(handle); 3732 if (!conn) break; 3733 if (!packet[2]){ 3734 const uint8_t * features = &packet[5]; 3735 hci_handle_remote_features_page_0(conn, features); 3736 3737 // read extended features if possible 3738 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3739 && ((conn->remote_supported_features[0] & 2) != 0)) { 3740 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3741 break; 3742 } 3743 } 3744 hci_handle_remote_features_received(conn); 3745 break; 3746 3747 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3748 handle = little_endian_read_16(packet, 3); 3749 conn = hci_connection_for_handle(handle); 3750 if (!conn) break; 3751 // status = ok, page = 1 3752 if (!packet[2]) { 3753 uint8_t page_number = packet[5]; 3754 uint8_t maximum_page_number = packet[6]; 3755 const uint8_t * features = &packet[7]; 3756 bool done = false; 3757 switch (page_number){ 3758 case 1: 3759 hci_handle_remote_features_page_1(conn, features); 3760 if (maximum_page_number >= 2){ 3761 // get Secure Connections (Controller) from Page 2 if available 3762 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3763 } else { 3764 // otherwise, assume SC (Controller) == SC (Host) 3765 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3766 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3767 } 3768 done = true; 3769 } 3770 break; 3771 case 2: 3772 hci_handle_remote_features_page_2(conn, features); 3773 done = true; 3774 break; 3775 default: 3776 break; 3777 } 3778 if (!done) break; 3779 } 3780 hci_handle_remote_features_received(conn); 3781 break; 3782 3783 case HCI_EVENT_LINK_KEY_REQUEST: 3784 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3785 hci_event_link_key_request_get_bd_addr(packet, addr); 3786 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3787 if (!conn) break; 3788 3789 // lookup link key in db if not cached 3790 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3791 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3792 } 3793 3794 // response sent by hci_run() 3795 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3796 #endif 3797 break; 3798 3799 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3800 hci_event_link_key_request_get_bd_addr(packet, addr); 3801 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3802 if (!conn) break; 3803 3804 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3805 3806 // CVE-2020-26555: ignore NULL link key 3807 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3808 if (btstack_is_null(&packet[8], 16)) break; 3809 3810 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3811 // Change Connection Encryption keeps link key type 3812 if (link_key_type != CHANGED_COMBINATION_KEY){ 3813 conn->link_key_type = link_key_type; 3814 } 3815 3816 // cache link key. link keys stored in little-endian format for legacy reasons 3817 memcpy(&conn->link_key, &packet[8], 16); 3818 3819 // only store link key: 3820 // - if bondable enabled 3821 if (hci_stack->bondable == false) break; 3822 // - if security level sufficient 3823 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3824 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3825 break; 3826 } 3827 3828 case HCI_EVENT_PIN_CODE_REQUEST: 3829 hci_event_pin_code_request_get_bd_addr(packet, addr); 3830 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3831 if (!conn) break; 3832 3833 hci_pairing_started(conn, false); 3834 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3835 if (!hci_stack->bondable ){ 3836 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3837 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3838 hci_run(); 3839 return; 3840 } 3841 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3842 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3843 log_info("Level 4 required, but SC not supported -> abort"); 3844 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3845 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3846 hci_run(); 3847 return; 3848 } 3849 break; 3850 3851 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3852 hci_event_io_capability_response_get_bd_addr(packet, addr); 3853 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3854 if (!conn) break; 3855 3856 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3857 hci_pairing_started(conn, true); 3858 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3859 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3860 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3861 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3862 #endif 3863 break; 3864 3865 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3866 hci_event_io_capability_response_get_bd_addr(packet, addr); 3867 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3868 if (!conn) break; 3869 3870 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3871 hci_connection_timestamp(conn); 3872 hci_pairing_started(conn, true); 3873 break; 3874 3875 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3876 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3877 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3878 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3879 if (!conn) break; 3880 3881 hci_connection_timestamp(conn); 3882 3883 hci_pairing_started(conn, true); 3884 3885 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3886 break; 3887 #endif 3888 3889 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3890 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3891 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3892 if (!conn) break; 3893 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3894 if (hci_stack->ssp_auto_accept){ 3895 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3896 }; 3897 } else { 3898 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3899 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3900 // don't forward event to app 3901 hci_run(); 3902 return; 3903 } 3904 break; 3905 3906 case HCI_EVENT_USER_PASSKEY_REQUEST: 3907 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3908 if (hci_stack->ssp_auto_accept){ 3909 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3910 }; 3911 break; 3912 3913 case HCI_EVENT_MODE_CHANGE: 3914 handle = hci_event_mode_change_get_handle(packet); 3915 conn = hci_connection_for_handle(handle); 3916 if (!conn) break; 3917 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3918 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3919 break; 3920 #endif 3921 3922 case HCI_EVENT_ENCRYPTION_CHANGE: 3923 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3924 handle = hci_event_encryption_change_get_connection_handle(packet); 3925 conn = hci_connection_for_handle(handle); 3926 if (!conn) break; 3927 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3928 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3929 if (encryption_enabled){ 3930 if (hci_is_le_connection(conn)){ 3931 // For LE, we accept connection as encrypted 3932 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3933 } 3934 #ifdef ENABLE_CLASSIC 3935 else { 3936 3937 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3938 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3939 bool connected_uses_aes_ccm = encryption_enabled == 2; 3940 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3941 #ifdef ENABLE_TESTING_SUPPORT 3942 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 3943 // - GAP/SEC/SEM/BI-31-C 3944 // - GAP/SEC/SEM/BI-32-C 3945 // - GAP/SEC/SEM/BI-33-C 3946 3947 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 3948 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 3949 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 3950 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 3951 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 3952 } 3953 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 3954 conn->link_key_type, new_link_key_type); 3955 conn->link_key_type = new_link_key_type; 3956 #else 3957 log_info("SC during pairing, but only E0 now -> abort"); 3958 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3959 break; 3960 #endif 3961 } 3962 3963 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3964 if (connected_uses_aes_ccm){ 3965 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3966 } 3967 3968 #ifdef ENABLE_TESTING_SUPPORT 3969 // work around for issue with PTS dongle 3970 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3971 #endif 3972 // validate encryption key size 3973 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3974 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3975 // already got encryption key size 3976 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3977 } else { 3978 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3979 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3980 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3981 } else { 3982 // if not, pretend everything is perfect 3983 hci_handle_read_encryption_key_size_complete(conn, 16); 3984 } 3985 } 3986 } 3987 #endif 3988 } else { 3989 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3990 } 3991 } else { 3992 #ifdef ENABLE_CLASSIC 3993 if (!hci_is_le_connection(conn)){ 3994 uint8_t status = hci_event_encryption_change_get_status(packet); 3995 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3996 conn->bonding_flags &= ~BONDING_DEDICATED; 3997 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3998 conn->bonding_status = status; 3999 } 4000 // trigger security update -> level 0 4001 hci_handle_mutual_authentication_completed(conn); 4002 } 4003 #endif 4004 } 4005 4006 break; 4007 4008 #ifdef ENABLE_CLASSIC 4009 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4010 handle = hci_event_authentication_complete_get_connection_handle(packet); 4011 conn = hci_connection_for_handle(handle); 4012 if (!conn) break; 4013 4014 // clear authentication active flag 4015 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4016 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4017 4018 // authenticated only if auth status == 0 4019 if (hci_event_authentication_complete_get_status(packet) == 0){ 4020 // authenticated 4021 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4022 4023 // If not already encrypted, start encryption 4024 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4025 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4026 break; 4027 } 4028 } 4029 4030 // emit updated security level (will be 0 if not authenticated) 4031 hci_handle_mutual_authentication_completed(conn); 4032 break; 4033 4034 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4035 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4036 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4037 if (!conn) break; 4038 4039 // treat successfully paired connection as authenticated 4040 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4041 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4042 } 4043 4044 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4045 break; 4046 #endif 4047 4048 // HCI_EVENT_DISCONNECTION_COMPLETE 4049 // has been split, to first notify stack before shutting connection down 4050 // see end of function, too. 4051 case HCI_EVENT_DISCONNECTION_COMPLETE: 4052 if (packet[2]) break; // status != 0 4053 handle = little_endian_read_16(packet, 3); 4054 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4055 if (hci_stack->acl_fragmentation_total_size > 0u) { 4056 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4057 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4058 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4059 hci_stack->acl_fragmentation_total_size = 0; 4060 hci_stack->acl_fragmentation_pos = 0; 4061 if (release_buffer){ 4062 hci_release_packet_buffer(); 4063 } 4064 } 4065 } 4066 4067 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4068 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4069 if (hci_stack->iso_fragmentation_total_size > 0u) { 4070 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4071 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4072 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4073 hci_stack->iso_fragmentation_total_size = 0; 4074 hci_stack->iso_fragmentation_pos = 0; 4075 if (release_buffer){ 4076 hci_release_packet_buffer(); 4077 } 4078 } 4079 } 4080 4081 // finalize iso stream for CIS handle 4082 iso_stream = hci_iso_stream_for_con_handle(handle); 4083 if (iso_stream != NULL){ 4084 hci_iso_stream_finalize(iso_stream); 4085 break; 4086 } 4087 4088 // finalize iso stream(s) for ACL handle 4089 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4090 while (btstack_linked_list_iterator_has_next(&it)){ 4091 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4092 if (iso_stream->acl_handle == handle ) { 4093 hci_iso_stream_finalize(iso_stream); 4094 } 4095 } 4096 #endif 4097 4098 conn = hci_connection_for_handle(handle); 4099 if (!conn) break; 4100 #ifdef ENABLE_CLASSIC 4101 // pairing failed if it was ongoing 4102 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4103 #endif 4104 4105 // emit dedicatd bonding event 4106 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4107 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4108 } 4109 4110 // mark connection for shutdown, stop timers, reset state 4111 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4112 hci_connection_stop_timer(conn); 4113 hci_connection_init(conn); 4114 4115 #ifdef ENABLE_BLE 4116 #ifdef ENABLE_LE_PERIPHERAL 4117 // re-enable advertisements for le connections if active 4118 if (hci_is_le_connection(conn)){ 4119 hci_update_advertisements_enabled_for_current_roles(); 4120 } 4121 #endif 4122 #endif 4123 break; 4124 4125 case HCI_EVENT_HARDWARE_ERROR: 4126 log_error("Hardware Error: 0x%02x", packet[2]); 4127 if (hci_stack->hardware_error_callback){ 4128 (*hci_stack->hardware_error_callback)(packet[2]); 4129 } else { 4130 // if no special requests, just reboot stack 4131 hci_power_control_off(); 4132 hci_power_control_on(); 4133 } 4134 break; 4135 4136 #ifdef ENABLE_CLASSIC 4137 case HCI_EVENT_ROLE_CHANGE: 4138 if (packet[2]) break; // status != 0 4139 reverse_bd_addr(&packet[3], addr); 4140 addr_type = BD_ADDR_TYPE_ACL; 4141 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4142 if (!conn) break; 4143 conn->role = (hci_role_t) packet[9]; 4144 break; 4145 #endif 4146 4147 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4148 // release packet buffer only for asynchronous transport and if there are not further fragments 4149 if (hci_transport_synchronous()) { 4150 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4151 return; // instead of break: to avoid re-entering hci_run() 4152 } 4153 hci_stack->acl_fragmentation_tx_active = 0; 4154 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4155 hci_stack->iso_fragmentation_tx_active = 0; 4156 if (hci_stack->iso_fragmentation_total_size) break; 4157 #endif 4158 if (hci_stack->acl_fragmentation_total_size) break; 4159 hci_release_packet_buffer(); 4160 4161 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4162 hci_iso_notify_can_send_now(); 4163 #endif 4164 // L2CAP receives this event via the hci_emit_event below 4165 4166 #ifdef ENABLE_CLASSIC 4167 // For SCO, we do the can_send_now_check here 4168 hci_notify_if_sco_can_send_now(); 4169 #endif 4170 break; 4171 4172 #ifdef ENABLE_CLASSIC 4173 case HCI_EVENT_SCO_CAN_SEND_NOW: 4174 // For SCO, we do the can_send_now_check here 4175 hci_stack->sco_can_send_now = true; 4176 hci_notify_if_sco_can_send_now(); 4177 return; 4178 4179 // explode inquriy results for easier consumption 4180 case HCI_EVENT_INQUIRY_RESULT: 4181 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4182 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4183 gap_inquiry_explode(packet, size); 4184 break; 4185 #endif 4186 4187 #ifdef ENABLE_BLE 4188 case HCI_EVENT_LE_META: 4189 switch (packet[2]){ 4190 #ifdef ENABLE_LE_CENTRAL 4191 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4192 if (!hci_stack->le_scanning_enabled) break; 4193 le_handle_advertisement_report(packet, size); 4194 break; 4195 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4196 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4197 if (!hci_stack->le_scanning_enabled) break; 4198 le_handle_extended_advertisement_report(packet, size); 4199 break; 4200 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4201 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4202 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4203 break; 4204 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4205 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4206 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4207 while (btstack_linked_list_iterator_has_next(&it)) { 4208 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4209 if (advertising_set->advertising_handle == advertising_handle){ 4210 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4211 } 4212 } 4213 break; 4214 #endif 4215 #endif 4216 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4217 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4218 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4219 event_handle_le_connection_complete(packet); 4220 break; 4221 4222 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4223 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4224 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4225 conn = hci_connection_for_handle(handle); 4226 if (!conn) break; 4227 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4228 break; 4229 4230 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4231 // connection 4232 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4233 conn = hci_connection_for_handle(handle); 4234 if (conn) { 4235 // read arguments 4236 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4237 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4238 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4239 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4240 4241 // validate against current connection parameter range 4242 le_connection_parameter_range_t existing_range; 4243 gap_get_connection_parameter_range(&existing_range); 4244 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4245 if (update_parameter){ 4246 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4247 conn->le_conn_interval_min = le_conn_interval_min; 4248 conn->le_conn_interval_max = le_conn_interval_max; 4249 conn->le_conn_latency = le_conn_latency; 4250 conn->le_supervision_timeout = le_supervision_timeout; 4251 } else { 4252 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4253 } 4254 } 4255 break; 4256 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4257 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4258 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4259 conn = hci_connection_for_handle(handle); 4260 if (conn) { 4261 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4262 } 4263 break; 4264 #endif 4265 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4266 case HCI_SUBEVENT_LE_CIS_REQUEST: 4267 // incoming CIS request, allocate iso stream object and cache metadata 4268 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4269 hci_subevent_le_cis_request_get_cig_id(packet), 4270 hci_subevent_le_cis_request_get_cis_id(packet)); 4271 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4272 if (iso_stream != NULL){ 4273 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4274 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4275 } 4276 break; 4277 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4278 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4279 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4280 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4281 iso_stream = hci_iso_stream_for_con_handle(handle); 4282 btstack_assert(iso_stream != NULL); 4283 // track SDU 4284 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4285 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4286 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4287 // CIS Accept by Peripheral 4288 if (status == ERROR_CODE_SUCCESS){ 4289 if (iso_stream->max_sdu_p_to_c > 0){ 4290 // we're peripheral and we will send data 4291 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4292 } else { 4293 // we're peripheral and we will only receive data 4294 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4295 } 4296 } else { 4297 hci_cis_handle_created(iso_stream, status); 4298 } 4299 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4300 } else { 4301 // CIG Setup by Central 4302 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4303 btstack_assert(cig != NULL); 4304 // update iso stream state 4305 if (status == ERROR_CODE_SUCCESS){ 4306 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4307 } else { 4308 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4309 } 4310 // update cig state 4311 uint8_t i; 4312 for (i=0;i<cig->num_cis;i++){ 4313 if (cig->cis_con_handles[i] == handle){ 4314 cig->cis_setup_active[i] = false; 4315 if (status == ERROR_CODE_SUCCESS){ 4316 cig->cis_established[i] = true; 4317 } else { 4318 hci_cis_handle_created(iso_stream, status); 4319 } 4320 } 4321 } 4322 4323 // trigger iso path setup if complete 4324 bool cis_setup_active = false; 4325 for (i=0;i<cig->num_cis;i++){ 4326 cis_setup_active |= cig->cis_setup_active[i]; 4327 } 4328 if (cis_setup_active == false){ 4329 cig->state_vars.next_cis = 0; 4330 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4331 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4332 } 4333 } 4334 } 4335 break; 4336 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4337 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4338 big = hci_big_for_handle(packet[4]); 4339 if (big != NULL){ 4340 uint8_t status = packet[3]; 4341 if (status == ERROR_CODE_SUCCESS){ 4342 // store bis_con_handles and trigger iso path setup 4343 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4344 uint8_t i; 4345 for (i=0;i<num_bis;i++){ 4346 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4347 big->bis_con_handles[i] = bis_handle; 4348 // assign bis handle 4349 btstack_linked_list_iterator_t it; 4350 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4351 while (btstack_linked_list_iterator_has_next(&it)){ 4352 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4353 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4354 (iso_stream->group_id == big->big_handle)){ 4355 iso_stream->cis_handle = bis_handle; 4356 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4357 break; 4358 } 4359 } 4360 } 4361 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4362 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4363 big->state_vars.next_bis = 0; 4364 } 4365 } else { 4366 // create BIG failed or has been stopped by us 4367 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4368 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4369 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4370 hci_emit_big_created(big, status); 4371 } else { 4372 hci_emit_big_terminated(big); 4373 } 4374 } 4375 } 4376 break; 4377 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4378 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4379 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4380 if (big != NULL){ 4381 // finalize associated ISO streams 4382 btstack_linked_list_iterator_t it; 4383 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4384 while (btstack_linked_list_iterator_has_next(&it)){ 4385 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4386 if (iso_stream->group_id == big->big_handle){ 4387 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4388 btstack_linked_list_iterator_remove(&it); 4389 btstack_memory_hci_iso_stream_free(iso_stream); 4390 } 4391 } 4392 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4393 switch (big->state){ 4394 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4395 hci_emit_big_created(big, big->state_vars.status); 4396 break; 4397 default: 4398 hci_emit_big_terminated(big); 4399 break; 4400 } 4401 } 4402 break; 4403 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4404 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4405 big_sync = hci_big_sync_for_handle(packet[4]); 4406 if (big_sync != NULL){ 4407 uint8_t status = packet[3]; 4408 uint8_t big_handle = packet[4]; 4409 if (status == ERROR_CODE_SUCCESS){ 4410 // store bis_con_handles and trigger iso path setup 4411 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4412 uint8_t i; 4413 for (i=0;i<num_bis;i++){ 4414 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4415 } 4416 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4417 // trigger iso path setup 4418 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4419 big_sync->state_vars.next_bis = 0; 4420 } 4421 } else { 4422 // create BIG Sync failed or has been stopped by us 4423 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4424 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4425 hci_emit_big_sync_created(big_sync, status); 4426 } else { 4427 hci_emit_big_sync_stopped(big_handle); 4428 } 4429 } 4430 } 4431 break; 4432 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4433 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4434 big_sync = hci_big_sync_for_handle(packet[4]); 4435 if (big_sync != NULL){ 4436 uint8_t big_handle = packet[4]; 4437 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4438 hci_emit_big_sync_stopped(big_handle); 4439 } 4440 break; 4441 #endif 4442 default: 4443 break; 4444 } 4445 break; 4446 #endif 4447 case HCI_EVENT_VENDOR_SPECIFIC: 4448 // Vendor specific commands often create vendor specific event instead of num completed packets 4449 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4450 switch (hci_stack->manufacturer){ 4451 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4452 hci_stack->num_cmd_packets = 1; 4453 break; 4454 default: 4455 break; 4456 } 4457 break; 4458 default: 4459 break; 4460 } 4461 4462 handle_event_for_current_stack_state(packet, size); 4463 4464 // notify upper stack 4465 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4466 4467 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4468 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4469 handle = little_endian_read_16(packet, 3); 4470 hci_connection_t * aConn = hci_connection_for_handle(handle); 4471 // discard connection if app did not trigger a reconnect in the event handler 4472 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4473 hci_shutdown_connection(aConn); 4474 } 4475 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4476 hci_controller_dump_packets(); 4477 #endif 4478 } 4479 4480 // execute main loop 4481 hci_run(); 4482 } 4483 4484 #ifdef ENABLE_CLASSIC 4485 4486 static void sco_handler(uint8_t * packet, uint16_t size){ 4487 // lookup connection struct 4488 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4489 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4490 if (!conn) return; 4491 4492 #ifdef ENABLE_SCO_OVER_HCI 4493 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4494 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4495 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4496 packet[2] = 0x3c; 4497 memmove(&packet[3], &packet[23], 63); 4498 size = 63; 4499 } 4500 } 4501 4502 if (hci_have_usb_transport()){ 4503 // Nothing to do 4504 } else { 4505 // 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); 4506 if (hci_stack->synchronous_flow_control_enabled == 0){ 4507 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4508 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4509 if (conn->sco_tx_active == 0){ 4510 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4511 conn->sco_tx_active = 1; 4512 conn->sco_tx_ready = max_sco_packets; 4513 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4514 hci_notify_if_sco_can_send_now(); 4515 } 4516 } else { 4517 if (conn->sco_tx_ready < max_sco_packets){ 4518 conn->sco_tx_ready++; 4519 } 4520 hci_notify_if_sco_can_send_now(); 4521 } 4522 } 4523 } 4524 #endif 4525 4526 // deliver to app 4527 if (hci_stack->sco_packet_handler) { 4528 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4529 } 4530 4531 #ifdef HAVE_SCO_TRANSPORT 4532 // We can send one packet for each received packet 4533 conn->sco_tx_ready++; 4534 hci_notify_if_sco_can_send_now(); 4535 #endif 4536 4537 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4538 conn->num_packets_completed++; 4539 hci_stack->host_completed_packets = 1; 4540 hci_run(); 4541 #endif 4542 } 4543 #endif 4544 4545 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4546 hci_dump_packet(packet_type, 1, packet, size); 4547 switch (packet_type) { 4548 case HCI_EVENT_PACKET: 4549 event_handler(packet, size); 4550 break; 4551 case HCI_ACL_DATA_PACKET: 4552 acl_handler(packet, size); 4553 break; 4554 #ifdef ENABLE_CLASSIC 4555 case HCI_SCO_DATA_PACKET: 4556 sco_handler(packet, size); 4557 break; 4558 #endif 4559 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4560 case HCI_ISO_DATA_PACKET: 4561 hci_iso_packet_handler(packet, size); 4562 break; 4563 #endif 4564 default: 4565 break; 4566 } 4567 } 4568 4569 /** 4570 * @brief Add event packet handler. 4571 */ 4572 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4573 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4574 } 4575 4576 /** 4577 * @brief Remove event packet handler. 4578 */ 4579 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4580 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4581 } 4582 4583 /** Register HCI packet handlers */ 4584 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4585 hci_stack->acl_packet_handler = handler; 4586 } 4587 4588 #ifdef ENABLE_CLASSIC 4589 /** 4590 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4591 */ 4592 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4593 hci_stack->sco_packet_handler = handler; 4594 } 4595 #endif 4596 4597 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4598 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4599 hci_stack->iso_packet_handler = handler; 4600 } 4601 #endif 4602 4603 static void hci_state_reset(void){ 4604 // no connections yet 4605 hci_stack->connections = NULL; 4606 4607 // keep discoverable/connectable as this has been requested by the client(s) 4608 // hci_stack->discoverable = 0; 4609 // hci_stack->connectable = 0; 4610 // hci_stack->bondable = 1; 4611 // hci_stack->own_addr_type = 0; 4612 4613 // buffer is free 4614 hci_stack->hci_packet_buffer_reserved = false; 4615 4616 // no pending cmds 4617 hci_stack->decline_reason = 0; 4618 4619 hci_stack->secure_connections_active = false; 4620 4621 #ifdef ENABLE_CLASSIC 4622 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4623 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4624 4625 hci_stack->gap_tasks_classic = 4626 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4627 GAP_TASK_SET_CLASS_OF_DEVICE | 4628 GAP_TASK_SET_LOCAL_NAME | 4629 GAP_TASK_SET_EIR_DATA | 4630 GAP_TASK_WRITE_SCAN_ENABLE | 4631 GAP_TASK_WRITE_PAGE_TIMEOUT; 4632 #endif 4633 4634 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4635 hci_stack->classic_read_local_oob_data = false; 4636 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4637 #endif 4638 4639 // LE 4640 #ifdef ENABLE_BLE 4641 memset(hci_stack->le_random_address, 0, 6); 4642 hci_stack->le_random_address_set = 0; 4643 #endif 4644 #ifdef ENABLE_LE_CENTRAL 4645 hci_stack->le_scanning_active = false; 4646 hci_stack->le_scanning_param_update = true; 4647 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4648 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4649 hci_stack->le_whitelist_capacity = 0; 4650 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4651 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4652 #endif 4653 #endif 4654 #ifdef ENABLE_LE_PERIPHERAL 4655 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4656 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4657 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4658 } 4659 if (hci_stack->le_advertisements_data != NULL){ 4660 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4661 } 4662 #endif 4663 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4664 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4665 #endif 4666 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4667 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4668 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4669 #endif 4670 } 4671 4672 #ifdef ENABLE_CLASSIC 4673 /** 4674 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4675 */ 4676 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4677 // store and open remote device db 4678 hci_stack->link_key_db = link_key_db; 4679 if (hci_stack->link_key_db) { 4680 hci_stack->link_key_db->open(); 4681 } 4682 } 4683 #endif 4684 4685 void hci_init(const hci_transport_t *transport, const void *config){ 4686 4687 #ifdef HAVE_MALLOC 4688 if (!hci_stack) { 4689 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4690 } 4691 #else 4692 hci_stack = &hci_stack_static; 4693 #endif 4694 memset(hci_stack, 0, sizeof(hci_stack_t)); 4695 4696 // reference to use transport layer implementation 4697 hci_stack->hci_transport = transport; 4698 4699 // reference to used config 4700 hci_stack->config = config; 4701 4702 // setup pointer for outgoing packet buffer 4703 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4704 4705 // max acl payload size defined in config.h 4706 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4707 4708 // register packet handlers with transport 4709 transport->register_packet_handler(&packet_handler); 4710 4711 hci_stack->state = HCI_STATE_OFF; 4712 4713 // class of device 4714 hci_stack->class_of_device = 0x007a020c; // Smartphone 4715 4716 // bondable by default 4717 hci_stack->bondable = 1; 4718 4719 #ifdef ENABLE_CLASSIC 4720 // classic name 4721 hci_stack->local_name = default_classic_name; 4722 4723 // Master slave policy 4724 hci_stack->master_slave_policy = 1; 4725 4726 // Allow Role Switch 4727 hci_stack->allow_role_switch = 1; 4728 4729 // Default / minimum security level = 2 4730 hci_stack->gap_security_level = LEVEL_2; 4731 4732 // Default Security Mode 4 4733 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4734 4735 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4736 hci_stack->gap_required_encyrption_key_size = 7; 4737 4738 // Link Supervision Timeout 4739 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4740 4741 #endif 4742 4743 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4744 hci_stack->ssp_enable = 1; 4745 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4746 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4747 hci_stack->ssp_auto_accept = 1; 4748 4749 // Secure Connections: enable (requires support from Controller) 4750 hci_stack->secure_connections_enable = true; 4751 4752 // voice setting - signed 16 bit pcm data with CVSD over the air 4753 hci_stack->sco_voice_setting = 0x60; 4754 4755 #ifdef ENABLE_BLE 4756 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4757 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4758 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4759 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4760 hci_stack->le_connection_latency = 4; // 4 4761 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4762 hci_stack->le_minimum_ce_length = 0; // 0 ms 4763 hci_stack->le_maximum_ce_length = 0; // 0 ms 4764 #endif 4765 4766 #ifdef ENABLE_LE_CENTRAL 4767 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4768 4769 // default LE Scanning 4770 hci_stack->le_scan_type = 0x01; // active 4771 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4772 hci_stack->le_scan_window = 0x30; // 30 ms 4773 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4774 #endif 4775 4776 #ifdef ENABLE_LE_PERIPHERAL 4777 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4778 4779 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4780 hci_stack->le_advertisements_interval_min = 0x0800; 4781 hci_stack->le_advertisements_interval_max = 0x0800; 4782 hci_stack->le_advertisements_type = 0; 4783 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4784 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4785 hci_stack->le_advertisements_channel_map = 0x07; 4786 hci_stack->le_advertisements_filter_policy = 0; 4787 #endif 4788 4789 // connection parameter range used to answer connection parameter update requests in l2cap 4790 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4791 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4792 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4793 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4794 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4795 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4796 4797 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4798 hci_stack->iso_packets_to_queue = 1; 4799 #endif 4800 4801 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4802 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4803 #endif 4804 4805 hci_state_reset(); 4806 } 4807 4808 void hci_deinit(void){ 4809 btstack_run_loop_remove_timer(&hci_stack->timeout); 4810 #ifdef HAVE_MALLOC 4811 if (hci_stack) { 4812 free(hci_stack); 4813 } 4814 #endif 4815 hci_stack = NULL; 4816 4817 #ifdef ENABLE_CLASSIC 4818 disable_l2cap_timeouts = 0; 4819 #endif 4820 } 4821 4822 /** 4823 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4824 */ 4825 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4826 hci_stack->chipset = chipset_driver; 4827 4828 // reset chipset driver - init is also called on power_up 4829 if (hci_stack->chipset && hci_stack->chipset->init){ 4830 hci_stack->chipset->init(hci_stack->config); 4831 } 4832 } 4833 4834 void hci_enable_custom_pre_init(void){ 4835 hci_stack->chipset_pre_init = true; 4836 } 4837 4838 /** 4839 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4840 */ 4841 void hci_set_control(const btstack_control_t *hardware_control){ 4842 // references to used control implementation 4843 hci_stack->control = hardware_control; 4844 // init with transport config 4845 hardware_control->init(hci_stack->config); 4846 } 4847 4848 static void hci_discard_connections(void){ 4849 btstack_linked_list_iterator_t it; 4850 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4851 while (btstack_linked_list_iterator_has_next(&it)){ 4852 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4853 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4854 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4855 hci_shutdown_connection(connection); 4856 } 4857 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4858 while (hci_stack->iso_streams != NULL){ 4859 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4860 } 4861 #endif 4862 } 4863 4864 void hci_close(void){ 4865 4866 #ifdef ENABLE_CLASSIC 4867 // close remote device db 4868 if (hci_stack->link_key_db) { 4869 hci_stack->link_key_db->close(); 4870 } 4871 #endif 4872 4873 hci_discard_connections(); 4874 4875 hci_power_control(HCI_POWER_OFF); 4876 4877 #ifdef HAVE_MALLOC 4878 free(hci_stack); 4879 #endif 4880 hci_stack = NULL; 4881 } 4882 4883 #ifdef HAVE_SCO_TRANSPORT 4884 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4885 hci_stack->sco_transport = sco_transport; 4886 sco_transport->register_packet_handler(&packet_handler); 4887 } 4888 #endif 4889 4890 #ifdef ENABLE_CLASSIC 4891 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4892 // validate ranage and set 4893 if (encryption_key_size < 7) return; 4894 if (encryption_key_size > 16) return; 4895 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4896 } 4897 4898 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4899 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4900 hci_stack->gap_security_mode = security_mode; 4901 return ERROR_CODE_SUCCESS; 4902 } else { 4903 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4904 } 4905 } 4906 4907 gap_security_mode_t gap_get_security_mode(void){ 4908 return hci_stack->gap_security_mode; 4909 } 4910 4911 void gap_set_security_level(gap_security_level_t security_level){ 4912 hci_stack->gap_security_level = security_level; 4913 } 4914 4915 gap_security_level_t gap_get_security_level(void){ 4916 if (hci_stack->gap_secure_connections_only_mode){ 4917 return LEVEL_4; 4918 } 4919 return hci_stack->gap_security_level; 4920 } 4921 4922 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4923 hci_stack->gap_minimal_service_security_level = security_level; 4924 } 4925 4926 void gap_set_secure_connections_only_mode(bool enable){ 4927 hci_stack->gap_secure_connections_only_mode = enable; 4928 } 4929 4930 bool gap_get_secure_connections_only_mode(void){ 4931 return hci_stack->gap_secure_connections_only_mode; 4932 } 4933 #endif 4934 4935 #ifdef ENABLE_CLASSIC 4936 void gap_set_class_of_device(uint32_t class_of_device){ 4937 hci_stack->class_of_device = class_of_device; 4938 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4939 hci_run(); 4940 } 4941 4942 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4943 hci_stack->default_link_policy_settings = default_link_policy_settings; 4944 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4945 hci_run(); 4946 } 4947 4948 void gap_set_allow_role_switch(bool allow_role_switch){ 4949 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4950 } 4951 4952 uint8_t hci_get_allow_role_switch(void){ 4953 return hci_stack->allow_role_switch; 4954 } 4955 4956 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4957 hci_stack->link_supervision_timeout = link_supervision_timeout; 4958 } 4959 4960 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4961 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4962 } 4963 4964 uint16_t hci_automatic_flush_timeout(void){ 4965 return hci_stack->automatic_flush_timeout; 4966 } 4967 4968 void hci_disable_l2cap_timeout_check(void){ 4969 disable_l2cap_timeouts = 1; 4970 } 4971 #endif 4972 4973 #ifndef HAVE_HOST_CONTROLLER_API 4974 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4975 void hci_set_bd_addr(bd_addr_t addr){ 4976 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4977 hci_stack->custom_bd_addr_set = 1; 4978 } 4979 #endif 4980 4981 // State-Module-Driver overview 4982 // state module low-level 4983 // HCI_STATE_OFF off close 4984 // HCI_STATE_INITIALIZING, on open 4985 // HCI_STATE_WORKING, on open 4986 // HCI_STATE_HALTING, on open 4987 // HCI_STATE_SLEEPING, off/sleep close 4988 // HCI_STATE_FALLING_ASLEEP on open 4989 4990 static int hci_power_control_on(void){ 4991 4992 // power on 4993 int err = 0; 4994 if (hci_stack->control && hci_stack->control->on){ 4995 err = (*hci_stack->control->on)(); 4996 } 4997 if (err){ 4998 log_error( "POWER_ON failed"); 4999 hci_emit_hci_open_failed(); 5000 return err; 5001 } 5002 5003 // int chipset driver 5004 if (hci_stack->chipset && hci_stack->chipset->init){ 5005 hci_stack->chipset->init(hci_stack->config); 5006 } 5007 5008 // init transport 5009 if (hci_stack->hci_transport->init){ 5010 hci_stack->hci_transport->init(hci_stack->config); 5011 } 5012 5013 // open transport 5014 err = hci_stack->hci_transport->open(); 5015 if (err){ 5016 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5017 if (hci_stack->control && hci_stack->control->off){ 5018 (*hci_stack->control->off)(); 5019 } 5020 hci_emit_hci_open_failed(); 5021 return err; 5022 } 5023 return 0; 5024 } 5025 5026 static void hci_power_control_off(void){ 5027 5028 log_info("hci_power_control_off"); 5029 5030 // close low-level device 5031 hci_stack->hci_transport->close(); 5032 5033 log_info("hci_power_control_off - hci_transport closed"); 5034 5035 // power off 5036 if (hci_stack->control && hci_stack->control->off){ 5037 (*hci_stack->control->off)(); 5038 } 5039 5040 log_info("hci_power_control_off - control closed"); 5041 5042 hci_stack->state = HCI_STATE_OFF; 5043 } 5044 5045 static void hci_power_control_sleep(void){ 5046 5047 log_info("hci_power_control_sleep"); 5048 5049 #if 0 5050 // don't close serial port during sleep 5051 5052 // close low-level device 5053 hci_stack->hci_transport->close(hci_stack->config); 5054 #endif 5055 5056 // sleep mode 5057 if (hci_stack->control && hci_stack->control->sleep){ 5058 (*hci_stack->control->sleep)(); 5059 } 5060 5061 hci_stack->state = HCI_STATE_SLEEPING; 5062 } 5063 5064 static int hci_power_control_wake(void){ 5065 5066 log_info("hci_power_control_wake"); 5067 5068 // wake on 5069 if (hci_stack->control && hci_stack->control->wake){ 5070 (*hci_stack->control->wake)(); 5071 } 5072 5073 #if 0 5074 // open low-level device 5075 int err = hci_stack->hci_transport->open(hci_stack->config); 5076 if (err){ 5077 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5078 if (hci_stack->control && hci_stack->control->off){ 5079 (*hci_stack->control->off)(); 5080 } 5081 hci_emit_hci_open_failed(); 5082 return err; 5083 } 5084 #endif 5085 5086 return 0; 5087 } 5088 5089 static void hci_power_enter_initializing_state(void){ 5090 // set up state machine 5091 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5092 hci_stack->hci_packet_buffer_reserved = false; 5093 hci_stack->state = HCI_STATE_INITIALIZING; 5094 5095 #ifndef HAVE_HOST_CONTROLLER_API 5096 if (hci_stack->chipset_pre_init) { 5097 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5098 } else 5099 #endif 5100 { 5101 hci_stack->substate = HCI_INIT_SEND_RESET; 5102 } 5103 } 5104 5105 static void hci_power_enter_halting_state(void){ 5106 #ifdef ENABLE_BLE 5107 // drop entries scheduled for removal, mark others for re-adding 5108 btstack_linked_list_iterator_t it; 5109 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5110 while (btstack_linked_list_iterator_has_next(&it)){ 5111 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5112 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5113 btstack_linked_list_iterator_remove(&it); 5114 btstack_memory_whitelist_entry_free(entry); 5115 } else { 5116 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5117 } 5118 } 5119 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5120 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5121 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5122 while (btstack_linked_list_iterator_has_next(&it)){ 5123 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5124 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5125 btstack_linked_list_iterator_remove(&it); 5126 btstack_memory_periodic_advertiser_list_entry_free(entry); 5127 } else { 5128 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5129 continue; 5130 } 5131 } 5132 #endif 5133 #endif 5134 // see hci_run 5135 hci_stack->state = HCI_STATE_HALTING; 5136 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5137 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5138 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5139 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5140 btstack_run_loop_add_timer(&hci_stack->timeout); 5141 } 5142 5143 // returns error 5144 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5145 int err; 5146 switch (power_mode){ 5147 case HCI_POWER_ON: 5148 err = hci_power_control_on(); 5149 if (err != 0) { 5150 log_error("hci_power_control_on() error %d", err); 5151 return err; 5152 } 5153 hci_power_enter_initializing_state(); 5154 break; 5155 case HCI_POWER_OFF: 5156 // do nothing 5157 break; 5158 case HCI_POWER_SLEEP: 5159 // do nothing (with SLEEP == OFF) 5160 break; 5161 default: 5162 btstack_assert(false); 5163 break; 5164 } 5165 return ERROR_CODE_SUCCESS; 5166 } 5167 5168 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5169 switch (power_mode){ 5170 case HCI_POWER_ON: 5171 // do nothing 5172 break; 5173 case HCI_POWER_OFF: 5174 // no connections yet, just turn it off 5175 hci_power_control_off(); 5176 break; 5177 case HCI_POWER_SLEEP: 5178 // no connections yet, just turn it off 5179 hci_power_control_sleep(); 5180 break; 5181 default: 5182 btstack_assert(false); 5183 break; 5184 } 5185 return ERROR_CODE_SUCCESS; 5186 } 5187 5188 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5189 switch (power_mode){ 5190 case HCI_POWER_ON: 5191 // do nothing 5192 break; 5193 case HCI_POWER_OFF: 5194 hci_power_enter_halting_state(); 5195 break; 5196 case HCI_POWER_SLEEP: 5197 // see hci_run 5198 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5199 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5200 break; 5201 default: 5202 btstack_assert(false); 5203 break; 5204 } 5205 return ERROR_CODE_SUCCESS; 5206 } 5207 5208 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5209 switch (power_mode){ 5210 case HCI_POWER_ON: 5211 hci_power_enter_initializing_state(); 5212 break; 5213 case HCI_POWER_OFF: 5214 // do nothing 5215 break; 5216 case HCI_POWER_SLEEP: 5217 // see hci_run 5218 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5219 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5220 break; 5221 default: 5222 btstack_assert(false); 5223 break; 5224 } 5225 return ERROR_CODE_SUCCESS; 5226 } 5227 5228 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5229 switch (power_mode){ 5230 case HCI_POWER_ON: 5231 hci_power_enter_initializing_state(); 5232 break; 5233 case HCI_POWER_OFF: 5234 hci_power_enter_halting_state(); 5235 break; 5236 case HCI_POWER_SLEEP: 5237 // do nothing 5238 break; 5239 default: 5240 btstack_assert(false); 5241 break; 5242 } 5243 return ERROR_CODE_SUCCESS; 5244 } 5245 5246 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5247 int err; 5248 switch (power_mode){ 5249 case HCI_POWER_ON: 5250 err = hci_power_control_wake(); 5251 if (err) return err; 5252 hci_power_enter_initializing_state(); 5253 break; 5254 case HCI_POWER_OFF: 5255 hci_power_enter_halting_state(); 5256 break; 5257 case HCI_POWER_SLEEP: 5258 // do nothing 5259 break; 5260 default: 5261 btstack_assert(false); 5262 break; 5263 } 5264 return ERROR_CODE_SUCCESS; 5265 } 5266 5267 int hci_power_control(HCI_POWER_MODE power_mode){ 5268 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5269 btstack_run_loop_remove_timer(&hci_stack->timeout); 5270 int err = 0; 5271 switch (hci_stack->state){ 5272 case HCI_STATE_OFF: 5273 err = hci_power_control_state_off(power_mode); 5274 break; 5275 case HCI_STATE_INITIALIZING: 5276 err = hci_power_control_state_initializing(power_mode); 5277 break; 5278 case HCI_STATE_WORKING: 5279 err = hci_power_control_state_working(power_mode); 5280 break; 5281 case HCI_STATE_HALTING: 5282 err = hci_power_control_state_halting(power_mode); 5283 break; 5284 case HCI_STATE_FALLING_ASLEEP: 5285 err = hci_power_control_state_falling_asleep(power_mode); 5286 break; 5287 case HCI_STATE_SLEEPING: 5288 err = hci_power_control_state_sleeping(power_mode); 5289 break; 5290 default: 5291 btstack_assert(false); 5292 break; 5293 } 5294 if (err != 0){ 5295 return err; 5296 } 5297 5298 // create internal event 5299 hci_emit_state(); 5300 5301 // trigger next/first action 5302 hci_run(); 5303 5304 return 0; 5305 } 5306 5307 5308 static void hci_halting_run(void) { 5309 5310 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5311 5312 hci_connection_t *connection; 5313 #ifdef ENABLE_BLE 5314 #ifdef ENABLE_LE_PERIPHERAL 5315 bool stop_advertismenets; 5316 #endif 5317 #endif 5318 5319 switch (hci_stack->substate) { 5320 case HCI_HALTING_CLASSIC_STOP: 5321 #ifdef ENABLE_CLASSIC 5322 if (!hci_can_send_command_packet_now()) return; 5323 5324 if (hci_stack->connectable || hci_stack->discoverable){ 5325 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5326 hci_send_cmd(&hci_write_scan_enable, 0); 5327 return; 5328 } 5329 #endif 5330 /* fall through */ 5331 5332 case HCI_HALTING_LE_ADV_STOP: 5333 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5334 5335 #ifdef ENABLE_BLE 5336 #ifdef ENABLE_LE_PERIPHERAL 5337 if (!hci_can_send_command_packet_now()) return; 5338 5339 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5340 5341 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5342 if (hci_extended_advertising_supported()){ 5343 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5344 btstack_linked_list_iterator_t it; 5345 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5346 // stop all periodic advertisements and check if an extended set is active 5347 while (btstack_linked_list_iterator_has_next(&it)){ 5348 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5349 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5350 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5351 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5352 return; 5353 } 5354 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5355 stop_advertismenets = true; 5356 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5357 } 5358 } 5359 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5360 if (stop_advertismenets){ 5361 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5362 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5363 return; 5364 } 5365 } else 5366 #else /* ENABLE_LE_PERIPHERAL */ 5367 { 5368 if (stop_advertismenets) { 5369 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5370 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5371 return; 5372 } 5373 } 5374 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5375 #endif /* ENABLE_LE_PERIPHERAL */ 5376 #endif /* ENABLE_BLE */ 5377 5378 /* fall through */ 5379 5380 case HCI_HALTING_LE_SCAN_STOP: 5381 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5382 if (!hci_can_send_command_packet_now()) return; 5383 5384 #ifdef ENABLE_BLE 5385 #ifdef ENABLE_LE_CENTRAL 5386 if (hci_stack->le_scanning_active){ 5387 hci_le_scan_stop(); 5388 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5389 return; 5390 } 5391 #endif 5392 #endif 5393 5394 /* fall through */ 5395 5396 case HCI_HALTING_DISCONNECT_ALL: 5397 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5398 if (!hci_can_send_command_packet_now()) return; 5399 5400 // close all open connections 5401 connection = (hci_connection_t *) hci_stack->connections; 5402 if (connection) { 5403 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5404 5405 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5406 5407 // check state 5408 switch(connection->state) { 5409 case SENT_DISCONNECT: 5410 case RECEIVED_DISCONNECTION_COMPLETE: 5411 // wait until connection is gone 5412 return; 5413 default: 5414 break; 5415 } 5416 5417 // finally, send the disconnect command 5418 connection->state = SENT_DISCONNECT; 5419 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5420 return; 5421 } 5422 5423 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5424 // stop BIGs and BIG Syncs 5425 if (hci_stack->le_audio_bigs != NULL){ 5426 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5427 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5428 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5429 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5430 return; 5431 } 5432 if (hci_stack->le_audio_big_syncs != NULL){ 5433 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5434 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5435 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5436 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5437 return; 5438 } 5439 #endif 5440 5441 btstack_run_loop_remove_timer(&hci_stack->timeout); 5442 5443 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5444 log_info("HCI_STATE_HALTING: wait 50 ms"); 5445 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5446 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5447 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5448 btstack_run_loop_add_timer(&hci_stack->timeout); 5449 break; 5450 5451 case HCI_HALTING_W4_CLOSE_TIMER: 5452 // keep waiting 5453 break; 5454 5455 case HCI_HALTING_CLOSE: 5456 // close left over connections (that had not been properly closed before) 5457 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5458 hci_discard_connections(); 5459 5460 log_info("HCI_STATE_HALTING, calling off"); 5461 5462 // switch mode 5463 hci_power_control_off(); 5464 5465 log_info("HCI_STATE_HALTING, emitting state"); 5466 hci_emit_state(); 5467 log_info("HCI_STATE_HALTING, done"); 5468 break; 5469 5470 default: 5471 break; 5472 } 5473 }; 5474 5475 static void hci_falling_asleep_run(void){ 5476 hci_connection_t * connection; 5477 switch(hci_stack->substate) { 5478 case HCI_FALLING_ASLEEP_DISCONNECT: 5479 log_info("HCI_STATE_FALLING_ASLEEP"); 5480 // close all open connections 5481 connection = (hci_connection_t *) hci_stack->connections; 5482 if (connection){ 5483 5484 // send disconnect 5485 if (!hci_can_send_command_packet_now()) return; 5486 5487 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5488 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5489 5490 // send disconnected event right away - causes higher layer connections to get closed, too. 5491 hci_shutdown_connection(connection); 5492 return; 5493 } 5494 5495 if (hci_classic_supported()){ 5496 // disable page and inquiry scan 5497 if (!hci_can_send_command_packet_now()) return; 5498 5499 log_info("HCI_STATE_HALTING, disabling inq scans"); 5500 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5501 5502 // continue in next sub state 5503 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5504 break; 5505 } 5506 5507 /* fall through */ 5508 5509 case HCI_FALLING_ASLEEP_COMPLETE: 5510 log_info("HCI_STATE_HALTING, calling sleep"); 5511 // switch mode 5512 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5513 hci_emit_state(); 5514 break; 5515 5516 default: 5517 break; 5518 } 5519 } 5520 5521 #ifdef ENABLE_CLASSIC 5522 5523 static void hci_update_scan_enable(void){ 5524 // 2 = page scan, 1 = inq scan 5525 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5526 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5527 hci_run(); 5528 } 5529 5530 void gap_discoverable_control(uint8_t enable){ 5531 if (enable) enable = 1; // normalize argument 5532 5533 if (hci_stack->discoverable == enable){ 5534 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5535 return; 5536 } 5537 5538 hci_stack->discoverable = enable; 5539 hci_update_scan_enable(); 5540 } 5541 5542 void gap_connectable_control(uint8_t enable){ 5543 if (enable) enable = 1; // normalize argument 5544 5545 // don't emit event 5546 if (hci_stack->connectable == enable) return; 5547 5548 hci_stack->connectable = enable; 5549 hci_update_scan_enable(); 5550 } 5551 #endif 5552 5553 void gap_local_bd_addr(bd_addr_t address_buffer){ 5554 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5555 } 5556 5557 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5558 static void hci_host_num_completed_packets(void){ 5559 5560 // create packet manually as arrays are not supported and num_commands should not get reduced 5561 hci_reserve_packet_buffer(); 5562 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5563 5564 uint16_t size = 0; 5565 uint16_t num_handles = 0; 5566 packet[size++] = 0x35; 5567 packet[size++] = 0x0c; 5568 size++; // skip param len 5569 size++; // skip num handles 5570 5571 // add { handle, packets } entries 5572 btstack_linked_item_t * it; 5573 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5574 hci_connection_t * connection = (hci_connection_t *) it; 5575 if (connection->num_packets_completed){ 5576 little_endian_store_16(packet, size, connection->con_handle); 5577 size += 2; 5578 little_endian_store_16(packet, size, connection->num_packets_completed); 5579 size += 2; 5580 // 5581 num_handles++; 5582 connection->num_packets_completed = 0; 5583 } 5584 } 5585 5586 packet[2] = size - 3; 5587 packet[3] = num_handles; 5588 5589 hci_stack->host_completed_packets = 0; 5590 5591 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5592 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5593 5594 // release packet buffer for synchronous transport implementations 5595 if (hci_transport_synchronous()){ 5596 hci_release_packet_buffer(); 5597 hci_emit_transport_packet_sent(); 5598 } 5599 } 5600 #endif 5601 5602 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5603 UNUSED(ds); 5604 hci_stack->substate = HCI_HALTING_CLOSE; 5605 hci_halting_run(); 5606 } 5607 5608 static bool hci_run_acl_fragments(void){ 5609 if (hci_stack->acl_fragmentation_total_size > 0u) { 5610 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5611 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5612 if (connection) { 5613 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5614 hci_send_acl_packet_fragments(connection); 5615 return true; 5616 } 5617 } else { 5618 // connection gone -> discard further fragments 5619 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5620 hci_stack->acl_fragmentation_total_size = 0; 5621 hci_stack->acl_fragmentation_pos = 0; 5622 } 5623 } 5624 return false; 5625 } 5626 5627 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5628 static bool hci_run_iso_fragments(void){ 5629 if (hci_stack->iso_fragmentation_total_size > 0u) { 5630 // TODO: flow control 5631 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5632 hci_send_iso_packet_fragments(); 5633 return true; 5634 } 5635 } 5636 return false; 5637 } 5638 #endif 5639 5640 #ifdef ENABLE_CLASSIC 5641 5642 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5643 static bool hci_classic_operation_active(void) { 5644 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5645 return true; 5646 } 5647 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5648 return true; 5649 } 5650 btstack_linked_item_t * it; 5651 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5652 hci_connection_t *connection = (hci_connection_t *) it; 5653 switch (connection->state) { 5654 case SENT_CREATE_CONNECTION: 5655 case SENT_CANCEL_CONNECTION: 5656 case SENT_DISCONNECT: 5657 return true; 5658 default: 5659 break; 5660 } 5661 } 5662 return false; 5663 } 5664 #endif 5665 5666 static bool hci_run_general_gap_classic(void){ 5667 5668 // assert stack is working and classic is active 5669 if (hci_classic_supported() == false) return false; 5670 if (hci_stack->state != HCI_STATE_WORKING) return false; 5671 5672 // decline incoming connections 5673 if (hci_stack->decline_reason){ 5674 uint8_t reason = hci_stack->decline_reason; 5675 hci_stack->decline_reason = 0; 5676 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5677 return true; 5678 } 5679 5680 if (hci_stack->gap_tasks_classic != 0){ 5681 hci_run_gap_tasks_classic(); 5682 return true; 5683 } 5684 5685 // start/stop inquiry 5686 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5687 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5688 if (hci_classic_operation_active() == false) 5689 #endif 5690 { 5691 uint8_t duration = hci_stack->inquiry_state; 5692 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5693 if (hci_stack->inquiry_max_period_length != 0){ 5694 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); 5695 } else { 5696 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5697 } 5698 return true; 5699 } 5700 } 5701 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5702 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5703 hci_send_cmd(&hci_inquiry_cancel); 5704 return true; 5705 } 5706 5707 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5708 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5709 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5710 return true; 5711 } 5712 5713 // remote name request 5714 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5715 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5716 if (hci_classic_operation_active() == false) 5717 #endif 5718 { 5719 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5720 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5721 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5722 return true; 5723 } 5724 } 5725 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5726 // Local OOB data 5727 if (hci_stack->classic_read_local_oob_data){ 5728 hci_stack->classic_read_local_oob_data = false; 5729 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5730 hci_send_cmd(&hci_read_local_extended_oob_data); 5731 } else { 5732 hci_send_cmd(&hci_read_local_oob_data); 5733 } 5734 } 5735 #endif 5736 // pairing 5737 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5738 uint8_t state = hci_stack->gap_pairing_state; 5739 uint8_t pin_code[16]; 5740 switch (state){ 5741 case GAP_PAIRING_STATE_SEND_PIN: 5742 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5743 memset(pin_code, 0, 16); 5744 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5745 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5746 break; 5747 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5748 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5749 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5750 break; 5751 case GAP_PAIRING_STATE_SEND_PASSKEY: 5752 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5753 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5754 break; 5755 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5756 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5757 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5758 break; 5759 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5760 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5761 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5762 break; 5763 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5764 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5765 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5766 break; 5767 default: 5768 break; 5769 } 5770 return true; 5771 } 5772 return false; 5773 } 5774 #endif 5775 5776 #ifdef ENABLE_BLE 5777 5778 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5779 static uint8_t hci_le_num_phys(uint8_t phys){ 5780 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5781 btstack_assert(phys); 5782 return num_bits_set[phys]; 5783 } 5784 #endif 5785 5786 #ifdef ENABLE_LE_CENTRAL 5787 static void hci_le_scan_stop(void){ 5788 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5789 if (hci_extended_advertising_supported()) { 5790 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5791 } else 5792 #endif 5793 { 5794 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5795 } 5796 } 5797 5798 static void 5799 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5800 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5801 if (hci_extended_advertising_supported()) { 5802 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5803 uint16_t le_connection_scan_interval[3]; 5804 uint16_t le_connection_scan_window[3]; 5805 uint16_t le_connection_interval_min[3]; 5806 uint16_t le_connection_interval_max[3]; 5807 uint16_t le_connection_latency[3]; 5808 uint16_t le_supervision_timeout[3]; 5809 uint16_t le_minimum_ce_length[3]; 5810 uint16_t le_maximum_ce_length[3]; 5811 5812 uint8_t i; 5813 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5814 for (i=0;i<num_phys;i++){ 5815 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5816 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5817 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5818 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5819 le_connection_latency[i] = hci_stack->le_connection_latency; 5820 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5821 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5822 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5823 } 5824 hci_send_cmd(&hci_le_extended_create_connection, 5825 initiator_filter_policy, 5826 hci_stack->le_connection_own_addr_type, // our addr type: 5827 address_type, // peer address type 5828 address, // peer bd addr 5829 hci_stack->le_connection_phys, // initiating PHY 5830 le_connection_scan_interval, // conn scan interval 5831 le_connection_scan_window, // conn scan windows 5832 le_connection_interval_min, // conn interval min 5833 le_connection_interval_max, // conn interval max 5834 le_connection_latency, // conn latency 5835 le_supervision_timeout, // conn latency 5836 le_minimum_ce_length, // min ce length 5837 le_maximum_ce_length // max ce length 5838 ); 5839 } else 5840 #endif 5841 { 5842 hci_send_cmd(&hci_le_create_connection, 5843 hci_stack->le_connection_scan_interval, // conn scan interval 5844 hci_stack->le_connection_scan_window, // conn scan windows 5845 initiator_filter_policy, // don't use whitelist 5846 address_type, // peer address type 5847 address, // peer bd addr 5848 hci_stack->le_connection_own_addr_type, // our addr type: 5849 hci_stack->le_connection_interval_min, // conn interval min 5850 hci_stack->le_connection_interval_max, // conn interval max 5851 hci_stack->le_connection_latency, // conn latency 5852 hci_stack->le_supervision_timeout, // conn latency 5853 hci_stack->le_minimum_ce_length, // min ce length 5854 hci_stack->le_maximum_ce_length // max ce length 5855 ); 5856 } 5857 } 5858 #endif 5859 5860 #ifdef ENABLE_LE_PERIPHERAL 5861 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5862 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5863 uint8_t operation = 0; 5864 if (pos == 0){ 5865 // first fragment or complete data 5866 operation |= 1; 5867 } 5868 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5869 // last fragment or complete data 5870 operation |= 2; 5871 } 5872 return operation; 5873 } 5874 #endif 5875 #endif 5876 5877 static bool hci_run_general_gap_le(void){ 5878 5879 btstack_linked_list_iterator_t lit; 5880 5881 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5882 if (hci_stack->le_resolvable_private_address_update_s > 0){ 5883 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 5884 hci_stack->le_resolvable_private_address_update_s = 0; 5885 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 5886 return true; 5887 } 5888 #endif 5889 5890 // Phase 1: collect what to stop 5891 5892 #ifdef ENABLE_LE_CENTRAL 5893 bool scanning_stop = false; 5894 bool connecting_stop = false; 5895 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5896 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5897 bool periodic_sync_stop = false; 5898 #endif 5899 #endif 5900 #endif 5901 5902 #ifdef ENABLE_LE_PERIPHERAL 5903 bool advertising_stop = false; 5904 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5905 le_advertising_set_t * advertising_stop_set = NULL; 5906 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5907 bool periodic_advertising_stop = false; 5908 #endif 5909 #endif 5910 #endif 5911 5912 // check if own address changes 5913 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5914 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5915 5916 // check if whitelist needs modification 5917 bool whitelist_modification_pending = false; 5918 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5919 while (btstack_linked_list_iterator_has_next(&lit)){ 5920 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5921 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5922 whitelist_modification_pending = true; 5923 break; 5924 } 5925 } 5926 5927 // check if resolving list needs modification 5928 bool resolving_list_modification_pending = false; 5929 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5930 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5931 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5932 resolving_list_modification_pending = true; 5933 } 5934 #endif 5935 5936 #ifdef ENABLE_LE_CENTRAL 5937 5938 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5939 // check if periodic advertiser list needs modification 5940 bool periodic_list_modification_pending = false; 5941 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5942 while (btstack_linked_list_iterator_has_next(&lit)){ 5943 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5944 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5945 periodic_list_modification_pending = true; 5946 break; 5947 } 5948 } 5949 #endif 5950 5951 // scanning control 5952 if (hci_stack->le_scanning_active) { 5953 // stop if: 5954 // - parameter change required 5955 // - it's disabled 5956 // - whitelist change required but used for scanning 5957 // - resolving list modified 5958 // - own address changes 5959 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5960 if ((hci_stack->le_scanning_param_update) || 5961 !hci_stack->le_scanning_enabled || 5962 (scanning_uses_whitelist && whitelist_modification_pending) || 5963 resolving_list_modification_pending || 5964 random_address_change){ 5965 5966 scanning_stop = true; 5967 } 5968 } 5969 5970 // connecting control 5971 bool connecting_with_whitelist; 5972 switch (hci_stack->le_connecting_state){ 5973 case LE_CONNECTING_DIRECT: 5974 case LE_CONNECTING_WHITELIST: 5975 // stop connecting if: 5976 // - connecting uses white and whitelist modification pending 5977 // - if it got disabled 5978 // - resolving list modified 5979 // - own address changes 5980 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5981 if ((connecting_with_whitelist && whitelist_modification_pending) || 5982 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5983 resolving_list_modification_pending || 5984 random_address_change) { 5985 5986 connecting_stop = true; 5987 } 5988 break; 5989 default: 5990 break; 5991 } 5992 5993 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5994 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5995 // periodic sync control 5996 bool sync_with_advertiser_list; 5997 switch(hci_stack->le_periodic_sync_state){ 5998 case LE_CONNECTING_DIRECT: 5999 case LE_CONNECTING_WHITELIST: 6000 // stop sync if: 6001 // - sync with advertiser list and advertiser list modification pending 6002 // - if it got disabled 6003 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6004 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6005 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6006 periodic_sync_stop = true; 6007 } 6008 break; 6009 default: 6010 break; 6011 } 6012 #endif 6013 #endif 6014 6015 #endif /* ENABLE_LE_CENTRAL */ 6016 6017 #ifdef ENABLE_LE_PERIPHERAL 6018 // le advertisement control 6019 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6020 // stop if: 6021 // - parameter change required 6022 // - random address used in advertising and changes 6023 // - it's disabled 6024 // - whitelist change required but used for advertisement filter policy 6025 // - resolving list modified 6026 // - own address changes 6027 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6028 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6029 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6030 if (advertising_change || 6031 (advertising_uses_random_address && random_address_change) || 6032 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6033 (advertising_uses_whitelist && whitelist_modification_pending) || 6034 resolving_list_modification_pending || 6035 random_address_change) { 6036 6037 advertising_stop = true; 6038 } 6039 } 6040 6041 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6042 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6043 btstack_linked_list_iterator_t it; 6044 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6045 while (btstack_linked_list_iterator_has_next(&it)){ 6046 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6047 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6048 // stop if: 6049 // - parameter change required 6050 // - random address used in connectable advertising and changes 6051 // - it's disabled 6052 // - whitelist change required but used for advertisement filter policy 6053 // - resolving list modified 6054 // - own address changes 6055 // - advertisement set will be removed 6056 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6057 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6058 bool advertising_uses_random_address = 6059 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6060 advertising_connectable; 6061 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6062 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6063 bool advertising_set_random_address_change = 6064 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6065 bool advertising_set_will_be_removed = 6066 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6067 if (advertising_parameter_change || 6068 (advertising_uses_random_address && advertising_set_random_address_change) || 6069 (advertising_enabled == false) || 6070 (advertising_uses_whitelist && whitelist_modification_pending) || 6071 resolving_list_modification_pending || 6072 advertising_set_will_be_removed) { 6073 6074 advertising_stop = true; 6075 advertising_stop_set = advertising_set; 6076 break; 6077 } 6078 } 6079 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6080 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6081 // stop if: 6082 // - it's disabled 6083 // - parameter change required 6084 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6085 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6086 if ((periodic_enabled == false) || periodic_parameter_change){ 6087 periodic_advertising_stop = true; 6088 advertising_stop_set = advertising_set; 6089 } 6090 } 6091 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6092 } 6093 } 6094 #endif 6095 6096 #endif 6097 6098 6099 // Phase 2: stop everything that should be off during modifications 6100 6101 6102 // 2.1 Outgoing connection 6103 #ifdef ENABLE_LE_CENTRAL 6104 if (connecting_stop){ 6105 hci_send_cmd(&hci_le_create_connection_cancel); 6106 return true; 6107 } 6108 #endif 6109 6110 // 2.2 Scanning 6111 #ifdef ENABLE_LE_CENTRAL 6112 if (scanning_stop){ 6113 hci_stack->le_scanning_active = false; 6114 hci_le_scan_stop(); 6115 return true; 6116 } 6117 6118 // 2.3 Periodic Sync 6119 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6120 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6121 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6122 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6123 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6124 return true; 6125 } 6126 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6127 if (periodic_sync_stop){ 6128 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6129 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6130 return true; 6131 } 6132 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6133 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6134 #endif /* ENABLE_LE_CENTRAL */ 6135 6136 // 2.4 Advertising: legacy, extended, periodic 6137 #ifdef ENABLE_LE_PERIPHERAL 6138 if (advertising_stop){ 6139 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6140 if (hci_extended_advertising_supported()) { 6141 uint8_t advertising_stop_handle; 6142 if (advertising_stop_set != NULL){ 6143 advertising_stop_handle = advertising_stop_set->advertising_handle; 6144 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6145 } else { 6146 advertising_stop_handle = 0; 6147 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6148 } 6149 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6150 const uint16_t durations[] = { 0 }; 6151 const uint16_t max_events[] = { 0 }; 6152 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6153 } else 6154 #endif 6155 { 6156 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6157 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6158 } 6159 return true; 6160 } 6161 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6162 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6163 if (periodic_advertising_stop){ 6164 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6165 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6166 return true; 6167 } 6168 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6169 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6170 #endif /* ENABLE_LE_PERIPHERAL */ 6171 6172 6173 // Phase 3: modify 6174 6175 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6176 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6177 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6178 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6179 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6180 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6181 #endif 6182 return true; 6183 } 6184 6185 #ifdef ENABLE_LE_CENTRAL 6186 if (hci_stack->le_scanning_param_update){ 6187 hci_stack->le_scanning_param_update = false; 6188 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6189 if (hci_extended_advertising_supported()){ 6190 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6191 uint8_t scan_types[2]; 6192 uint16_t scan_intervals[2]; 6193 uint16_t scan_windows[2]; 6194 6195 uint8_t i; 6196 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6197 for (i=0;i<num_phys;i++){ 6198 scan_types[i] = hci_stack->le_scan_type; 6199 scan_intervals[i] = hci_stack->le_scan_interval; 6200 scan_windows[i] = hci_stack->le_scan_window; 6201 } 6202 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6203 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6204 } else 6205 #endif 6206 { 6207 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6208 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6209 } 6210 return true; 6211 } 6212 #endif 6213 6214 #ifdef ENABLE_LE_PERIPHERAL 6215 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6216 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6217 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6218 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6219 if (hci_extended_advertising_supported()){ 6220 // map advertisment type to advertising event properties 6221 uint16_t adv_event_properties = 0; 6222 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6223 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6224 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6225 } 6226 hci_stack->le_advertising_set_in_current_command = 0; 6227 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6228 0, 6229 adv_event_properties, 6230 hci_stack->le_advertisements_interval_min, 6231 hci_stack->le_advertisements_interval_max, 6232 hci_stack->le_advertisements_channel_map, 6233 hci_stack->le_advertisements_own_addr_type, 6234 hci_stack->le_advertisements_direct_address_type, 6235 hci_stack->le_advertisements_direct_address, 6236 hci_stack->le_advertisements_filter_policy, 6237 0x7f, // tx power: no preference 6238 0x01, // primary adv phy: LE 1M 6239 0, // secondary adv max skip 6240 0x01, // secondary adv phy 6241 0, // adv sid 6242 0 // scan request notification 6243 ); 6244 } else 6245 #endif 6246 { 6247 hci_send_cmd(&hci_le_set_advertising_parameters, 6248 hci_stack->le_advertisements_interval_min, 6249 hci_stack->le_advertisements_interval_max, 6250 hci_stack->le_advertisements_type, 6251 hci_stack->le_advertisements_own_addr_type, 6252 hci_stack->le_advertisements_direct_address_type, 6253 hci_stack->le_advertisements_direct_address, 6254 hci_stack->le_advertisements_channel_map, 6255 hci_stack->le_advertisements_filter_policy); 6256 } 6257 return true; 6258 } 6259 6260 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6261 // assumption: only set if extended advertising is supported 6262 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6263 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6264 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6265 return true; 6266 } 6267 #endif 6268 6269 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6270 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6271 uint8_t adv_data_clean[31]; 6272 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6273 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6274 hci_stack->le_advertisements_data_len); 6275 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6276 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6277 if (hci_extended_advertising_supported()){ 6278 hci_stack->le_advertising_set_in_current_command = 0; 6279 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6280 } else 6281 #endif 6282 { 6283 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6284 } 6285 return true; 6286 } 6287 6288 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6289 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6290 uint8_t scan_data_clean[31]; 6291 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6292 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6293 hci_stack->le_scan_response_data_len); 6294 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6295 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6296 if (hci_extended_advertising_supported()){ 6297 hci_stack->le_advertising_set_in_current_command = 0; 6298 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6299 } else 6300 #endif 6301 { 6302 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6303 } 6304 return true; 6305 } 6306 6307 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6308 if (hci_extended_advertising_supported()) { 6309 btstack_linked_list_iterator_t it; 6310 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6311 while (btstack_linked_list_iterator_has_next(&it)){ 6312 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6313 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6314 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6315 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6316 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6317 return true; 6318 } 6319 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6320 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6321 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6322 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6323 advertising_set->advertising_handle, 6324 advertising_set->extended_params.advertising_event_properties, 6325 advertising_set->extended_params.primary_advertising_interval_min, 6326 advertising_set->extended_params.primary_advertising_interval_max, 6327 advertising_set->extended_params.primary_advertising_channel_map, 6328 advertising_set->extended_params.own_address_type, 6329 advertising_set->extended_params.peer_address_type, 6330 advertising_set->extended_params.peer_address, 6331 advertising_set->extended_params.advertising_filter_policy, 6332 advertising_set->extended_params.advertising_tx_power, 6333 advertising_set->extended_params.primary_advertising_phy, 6334 advertising_set->extended_params.secondary_advertising_max_skip, 6335 advertising_set->extended_params.secondary_advertising_phy, 6336 advertising_set->extended_params.advertising_sid, 6337 advertising_set->extended_params.scan_request_notification_enable 6338 ); 6339 return true; 6340 } 6341 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6342 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6343 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6344 return true; 6345 } 6346 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6347 uint16_t pos = advertising_set->adv_data_pos; 6348 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6349 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6350 if ((operation & 0x02) != 0){ 6351 // last fragment or complete data 6352 operation |= 2; 6353 advertising_set->adv_data_pos = 0; 6354 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6355 } else { 6356 advertising_set->adv_data_pos += data_to_upload; 6357 } 6358 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6359 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6360 return true; 6361 } 6362 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6363 uint16_t pos = advertising_set->scan_data_pos; 6364 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6365 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6366 if ((operation & 0x02) != 0){ 6367 advertising_set->scan_data_pos = 0; 6368 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6369 } else { 6370 advertising_set->scan_data_pos += data_to_upload; 6371 } 6372 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6373 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6374 return true; 6375 } 6376 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6377 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6378 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6379 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6380 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6381 advertising_set->advertising_handle, 6382 advertising_set->periodic_params.periodic_advertising_interval_min, 6383 advertising_set->periodic_params.periodic_advertising_interval_max, 6384 advertising_set->periodic_params.periodic_advertising_properties); 6385 return true; 6386 } 6387 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6388 uint16_t pos = advertising_set->periodic_data_pos; 6389 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6390 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6391 if ((operation & 0x02) != 0){ 6392 // last fragment or complete data 6393 operation |= 2; 6394 advertising_set->periodic_data_pos = 0; 6395 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6396 } else { 6397 advertising_set->periodic_data_pos += data_to_upload; 6398 } 6399 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6400 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6401 return true; 6402 } 6403 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6404 } 6405 } 6406 #endif 6407 6408 #endif 6409 6410 #ifdef ENABLE_LE_CENTRAL 6411 // if connect with whitelist was active and is not cancelled yet, wait until next time 6412 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6413 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6414 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6415 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6416 #endif 6417 #endif 6418 6419 // LE Whitelist Management 6420 if (whitelist_modification_pending){ 6421 // add/remove entries 6422 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6423 while (btstack_linked_list_iterator_has_next(&lit)){ 6424 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6425 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6426 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6427 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6428 bd_addr_type_t address_type = entry->address_type; 6429 bd_addr_t address; 6430 memcpy(address, entry->address, 6); 6431 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6432 // remove from whitelist if not scheduled for re-addition 6433 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6434 btstack_memory_whitelist_entry_free(entry); 6435 } 6436 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6437 return true; 6438 } 6439 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6440 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6441 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6442 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6443 return true; 6444 } 6445 } 6446 } 6447 6448 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6449 // LE Resolving List Management 6450 if (resolving_list_supported) { 6451 uint16_t i; 6452 switch (hci_stack->le_resolving_list_state) { 6453 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6454 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6455 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6456 return true; 6457 case LE_RESOLVING_LIST_READ_SIZE: 6458 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6459 hci_send_cmd(&hci_le_read_resolving_list_size); 6460 return true; 6461 case LE_RESOLVING_LIST_SEND_CLEAR: 6462 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6463 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6464 sizeof(hci_stack->le_resolving_list_add_entries)); 6465 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6466 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6467 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6468 sizeof(hci_stack->le_resolving_list_remove_entries)); 6469 hci_send_cmd(&hci_le_clear_resolving_list); 6470 return true; 6471 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6472 // first remove old entries 6473 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6474 uint8_t offset = i >> 3; 6475 uint8_t mask = 1 << (i & 7); 6476 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6477 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6478 bd_addr_t peer_identity_addreses; 6479 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6480 sm_key_t peer_irk; 6481 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6482 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6483 6484 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6485 // trigger whitelist entry 'update' (work around for controller bug) 6486 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6487 while (btstack_linked_list_iterator_has_next(&lit)) { 6488 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6489 if (entry->address_type != peer_identity_addr_type) continue; 6490 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6491 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6492 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6493 } 6494 #endif 6495 6496 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6497 peer_identity_addreses); 6498 return true; 6499 } 6500 6501 // then add new entries 6502 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6503 uint8_t offset = i >> 3; 6504 uint8_t mask = 1 << (i & 7); 6505 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6506 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6507 bd_addr_t peer_identity_addreses; 6508 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6509 sm_key_t peer_irk; 6510 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6511 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6512 if (btstack_is_null(peer_irk, 16)) continue; 6513 const uint8_t *local_irk = gap_get_persistent_irk(); 6514 // command uses format specifier 'P' that stores 16-byte value without flip 6515 uint8_t local_irk_flipped[16]; 6516 uint8_t peer_irk_flipped[16]; 6517 reverse_128(local_irk, local_irk_flipped); 6518 reverse_128(peer_irk, peer_irk_flipped); 6519 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6520 peer_irk_flipped, local_irk_flipped); 6521 return true; 6522 } 6523 6524 // finally, set privacy mode 6525 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6526 uint8_t offset = i >> 3; 6527 uint8_t mask = 1 << (i & 7); 6528 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6529 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6530 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6531 // Network Privacy Mode is default 6532 continue; 6533 } 6534 bd_addr_t peer_identity_address; 6535 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6536 sm_key_t peer_irk; 6537 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6538 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6539 if (btstack_is_null(peer_irk, 16)) continue; 6540 // command uses format specifier 'P' that stores 16-byte value without flip 6541 uint8_t peer_irk_flipped[16]; 6542 reverse_128(peer_irk, peer_irk_flipped); 6543 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6544 return true; 6545 } 6546 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6547 break; 6548 6549 default: 6550 break; 6551 } 6552 } 6553 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6554 #endif 6555 6556 #ifdef ENABLE_LE_CENTRAL 6557 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6558 // LE Whitelist Management 6559 if (periodic_list_modification_pending){ 6560 // add/remove entries 6561 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6562 while (btstack_linked_list_iterator_has_next(&lit)){ 6563 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6564 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6565 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6566 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6567 return true; 6568 } 6569 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6570 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6571 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6572 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6573 return true; 6574 } 6575 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6576 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6577 btstack_memory_periodic_advertiser_list_entry_free(entry); 6578 } 6579 } 6580 } 6581 #endif 6582 #endif 6583 6584 #ifdef ENABLE_LE_CENTRAL 6585 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6586 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6587 if (hci_stack->le_past_set_default_params){ 6588 hci_stack->le_past_set_default_params = false; 6589 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6590 hci_stack->le_past_mode, 6591 hci_stack->le_past_skip, 6592 hci_stack->le_past_sync_timeout, 6593 hci_stack->le_past_cte_type); 6594 return true; 6595 } 6596 #endif 6597 #endif 6598 #endif 6599 6600 // post-pone all actions until stack is fully working 6601 if (hci_stack->state != HCI_STATE_WORKING) return false; 6602 6603 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6604 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6605 6606 // Phase 4: restore state 6607 6608 #ifdef ENABLE_LE_CENTRAL 6609 // re-start scanning 6610 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6611 hci_stack->le_scanning_active = true; 6612 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6613 if (hci_extended_advertising_supported()){ 6614 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6615 } else 6616 #endif 6617 { 6618 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6619 } 6620 return true; 6621 } 6622 #endif 6623 6624 #ifdef ENABLE_LE_CENTRAL 6625 // re-start connecting 6626 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6627 bd_addr_t null_addr; 6628 memset(null_addr, 0, 6); 6629 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6630 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6631 hci_send_le_create_connection(1, 0, null_addr); 6632 return true; 6633 } 6634 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6635 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6636 switch(hci_stack->le_periodic_sync_request){ 6637 case LE_CONNECTING_DIRECT: 6638 case LE_CONNECTING_WHITELIST: 6639 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6640 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6641 hci_stack->le_periodic_sync_options, 6642 hci_stack->le_periodic_sync_advertising_sid, 6643 hci_stack->le_periodic_sync_advertiser_address_type, 6644 hci_stack->le_periodic_sync_advertiser_address, 6645 hci_stack->le_periodic_sync_skip, 6646 hci_stack->le_periodic_sync_timeout, 6647 hci_stack->le_periodic_sync_cte_type); 6648 return true; 6649 default: 6650 break; 6651 } 6652 } 6653 #endif 6654 #endif 6655 6656 #ifdef ENABLE_LE_PERIPHERAL 6657 // re-start advertising 6658 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6659 // check if advertisements should be enabled given 6660 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6661 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6662 6663 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6664 if (hci_extended_advertising_supported()){ 6665 const uint8_t advertising_handles[] = { 0 }; 6666 const uint16_t durations[] = { 0 }; 6667 const uint16_t max_events[] = { 0 }; 6668 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6669 } else 6670 #endif 6671 { 6672 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6673 } 6674 return true; 6675 } 6676 6677 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6678 if (hci_extended_advertising_supported()) { 6679 btstack_linked_list_iterator_t it; 6680 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6681 while (btstack_linked_list_iterator_has_next(&it)) { 6682 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6683 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6684 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6685 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6686 const uint16_t durations[] = { advertising_set->enable_timeout }; 6687 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6688 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6689 return true; 6690 } 6691 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6692 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6693 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6694 uint8_t enable = 1; 6695 if (advertising_set->periodic_include_adi){ 6696 enable |= 2; 6697 } 6698 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6699 return true; 6700 } 6701 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6702 } 6703 } 6704 #endif 6705 #endif 6706 6707 return false; 6708 } 6709 6710 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6711 static bool hci_run_iso_tasks(void){ 6712 btstack_linked_list_iterator_t it; 6713 6714 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6715 return false; 6716 } 6717 6718 // BIG 6719 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6720 while (btstack_linked_list_iterator_has_next(&it)){ 6721 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6722 switch (big->state){ 6723 case LE_AUDIO_BIG_STATE_CREATE: 6724 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6725 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6726 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6727 hci_send_cmd(&hci_le_create_big, 6728 big->params->big_handle, 6729 big->params->advertising_handle, 6730 big->params->num_bis, 6731 big->params->sdu_interval_us, 6732 big->params->max_sdu, 6733 big->params->max_transport_latency_ms, 6734 big->params->rtn, 6735 big->params->phy, 6736 big->params->packing, 6737 big->params->framing, 6738 big->params->encryption, 6739 big->params->broadcast_code); 6740 return true; 6741 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6742 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6743 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); 6744 return true; 6745 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6746 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6747 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6748 return true; 6749 case LE_AUDIO_BIG_STATE_TERMINATE: 6750 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6751 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6752 return true; 6753 default: 6754 break; 6755 } 6756 } 6757 6758 // BIG Sync 6759 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6760 while (btstack_linked_list_iterator_has_next(&it)){ 6761 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6762 switch (big_sync->state){ 6763 case LE_AUDIO_BIG_STATE_CREATE: 6764 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6765 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6766 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6767 hci_send_cmd(&hci_le_big_create_sync, 6768 big_sync->params->big_handle, 6769 big_sync->params->sync_handle, 6770 big_sync->params->encryption, 6771 big_sync->params->broadcast_code, 6772 big_sync->params->mse, 6773 big_sync->params->big_sync_timeout_10ms, 6774 big_sync->params->num_bis, 6775 big_sync->params->bis_indices); 6776 return true; 6777 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6778 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6779 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); 6780 return true; 6781 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6782 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6783 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6784 return true; 6785 case LE_AUDIO_BIG_STATE_TERMINATE: 6786 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6787 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6788 return true; 6789 default: 6790 break; 6791 } 6792 } 6793 6794 // CIG 6795 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6796 while (btstack_linked_list_iterator_has_next(&it)) { 6797 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6798 uint8_t i; 6799 // Set CIG Parameters 6800 uint8_t cis_id[MAX_NR_CIS]; 6801 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6802 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6803 uint8_t phy_c_to_p[MAX_NR_CIS]; 6804 uint8_t phy_p_to_c[MAX_NR_CIS]; 6805 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6806 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6807 switch (cig->state) { 6808 case LE_AUDIO_CIG_STATE_CREATE: 6809 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6810 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6811 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6812 le_audio_cig_params_t * params = cig->params; 6813 for (i = 0; i < params->num_cis; i++) { 6814 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6815 cis_id[i] = cis_params->cis_id; 6816 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6817 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6818 phy_c_to_p[i] = cis_params->phy_c_to_p; 6819 phy_p_to_c[i] = cis_params->phy_p_to_c; 6820 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6821 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6822 } 6823 hci_send_cmd(&hci_le_set_cig_parameters, 6824 cig->cig_id, 6825 params->sdu_interval_c_to_p, 6826 params->sdu_interval_p_to_c, 6827 params->worst_case_sca, 6828 params->packing, 6829 params->framing, 6830 params->max_transport_latency_c_to_p, 6831 params->max_transport_latency_p_to_c, 6832 params->num_cis, 6833 cis_id, 6834 max_sdu_c_to_p, 6835 max_sdu_p_to_c, 6836 phy_c_to_p, 6837 phy_p_to_c, 6838 rtn_c_to_p, 6839 rtn_p_to_c 6840 ); 6841 return true; 6842 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6843 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6844 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6845 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6846 for (i=0;i<cig->num_cis;i++){ 6847 cig->cis_setup_active[i] = true; 6848 } 6849 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6850 return true; 6851 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6852 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6853 // find next path to setup 6854 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6855 if (cig->cis_established[cis_index] == false) { 6856 continue; 6857 } 6858 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6859 bool setup = true; 6860 if (cis_direction == 0){ 6861 // 0 - input - host to controller 6862 // we are central => central to peripheral 6863 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6864 } else { 6865 // 1 - output - controller to host 6866 // we are central => peripheral to central 6867 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6868 } 6869 if (setup){ 6870 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6871 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6872 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6873 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); 6874 return true; 6875 } 6876 cig->state_vars.next_cis++; 6877 } 6878 // emit done 6879 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6880 default: 6881 break; 6882 } 6883 } 6884 6885 // CIS Accept/Reject 6886 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6887 while (btstack_linked_list_iterator_has_next(&it)) { 6888 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6889 hci_con_handle_t con_handle; 6890 switch (iso_stream->state){ 6891 case HCI_ISO_STREAM_W2_ACCEPT: 6892 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6893 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6894 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6895 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6896 return true; 6897 case HCI_ISO_STREAM_W2_REJECT: 6898 con_handle = iso_stream->cis_handle; 6899 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6900 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6901 hci_iso_stream_finalize(iso_stream); 6902 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6903 return true; 6904 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6905 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6906 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6907 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6908 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); 6909 break; 6910 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6911 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6912 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6913 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6914 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); 6915 break; 6916 default: 6917 break; 6918 } 6919 } 6920 6921 return false; 6922 } 6923 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6924 #endif 6925 6926 static bool hci_run_general_pending_commands(void){ 6927 btstack_linked_item_t * it; 6928 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6929 hci_connection_t * connection = (hci_connection_t *) it; 6930 6931 switch(connection->state){ 6932 case SEND_CREATE_CONNECTION: 6933 switch(connection->address_type){ 6934 #ifdef ENABLE_CLASSIC 6935 case BD_ADDR_TYPE_ACL: 6936 log_info("sending hci_create_connection"); 6937 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6938 break; 6939 #endif 6940 default: 6941 #ifdef ENABLE_BLE 6942 #ifdef ENABLE_LE_CENTRAL 6943 log_info("sending hci_le_create_connection"); 6944 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6945 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6946 hci_send_le_create_connection(0, connection->address_type, connection->address); 6947 connection->state = SENT_CREATE_CONNECTION; 6948 #endif 6949 #endif 6950 break; 6951 } 6952 return true; 6953 6954 #ifdef ENABLE_CLASSIC 6955 case RECEIVED_CONNECTION_REQUEST: 6956 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6957 log_info("sending hci_accept_connection_request"); 6958 connection->state = ACCEPTED_CONNECTION_REQUEST; 6959 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6960 return true; 6961 } 6962 break; 6963 #endif 6964 case SEND_DISCONNECT: 6965 connection->state = SENT_DISCONNECT; 6966 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6967 return true; 6968 6969 default: 6970 break; 6971 } 6972 6973 // no further commands if connection is about to get shut down 6974 if (connection->state == SENT_DISCONNECT) continue; 6975 6976 #ifdef ENABLE_CLASSIC 6977 6978 // Handling link key request requires remote supported features 6979 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6980 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6981 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6982 6983 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6984 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6985 if (have_link_key && security_level_sufficient){ 6986 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6987 } else { 6988 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6989 } 6990 return true; 6991 } 6992 6993 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6994 log_info("denying to pin request"); 6995 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6996 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6997 return true; 6998 } 6999 7000 // security assessment requires remote features 7001 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7002 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7003 hci_ssp_assess_security_on_io_cap_request(connection); 7004 // 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 7005 } 7006 7007 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7008 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7009 // set authentication requirements: 7010 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7011 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7012 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7013 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7014 authreq |= 1; 7015 } 7016 bool bonding = hci_stack->bondable; 7017 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7018 // if we have received IO Cap Response, we're in responder role 7019 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7020 if (bonding && !remote_bonding){ 7021 log_info("Remote not bonding, dropping local flag"); 7022 bonding = false; 7023 } 7024 } 7025 if (bonding){ 7026 if (connection->bonding_flags & BONDING_DEDICATED){ 7027 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7028 } else { 7029 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7030 } 7031 } 7032 uint8_t have_oob_data = 0; 7033 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7034 if (connection->classic_oob_c_192 != NULL){ 7035 have_oob_data |= 1; 7036 } 7037 if (connection->classic_oob_c_256 != NULL){ 7038 have_oob_data |= 2; 7039 } 7040 #endif 7041 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7042 return true; 7043 } 7044 7045 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7046 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7047 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7048 return true; 7049 } 7050 7051 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7052 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7053 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7054 const uint8_t zero[16] = { 0 }; 7055 const uint8_t * r_192 = zero; 7056 const uint8_t * c_192 = zero; 7057 const uint8_t * r_256 = zero; 7058 const uint8_t * c_256 = zero; 7059 // verify P-256 OOB 7060 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7061 c_256 = connection->classic_oob_c_256; 7062 if (connection->classic_oob_r_256 != NULL) { 7063 r_256 = connection->classic_oob_r_256; 7064 } 7065 } 7066 // verify P-192 OOB 7067 if ((connection->classic_oob_c_192 != NULL)) { 7068 c_192 = connection->classic_oob_c_192; 7069 if (connection->classic_oob_r_192 != NULL) { 7070 r_192 = connection->classic_oob_r_192; 7071 } 7072 } 7073 7074 // assess security 7075 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7076 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7077 if (need_level_4 && !can_reach_level_4){ 7078 log_info("Level 4 required, but not possible -> abort"); 7079 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7080 // send oob negative reply 7081 c_256 = NULL; 7082 c_192 = NULL; 7083 } 7084 7085 // Reply 7086 if (c_256 != zero) { 7087 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7088 } else if (c_192 != zero){ 7089 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7090 } else { 7091 hci_stack->classic_oob_con_handle = connection->con_handle; 7092 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7093 } 7094 return true; 7095 } 7096 #endif 7097 7098 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7099 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7100 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7101 return true; 7102 } 7103 7104 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7105 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7106 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7107 return true; 7108 } 7109 7110 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7111 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7112 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7113 return true; 7114 } 7115 7116 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7117 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7118 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7119 connection->state = SENT_DISCONNECT; 7120 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7121 return true; 7122 } 7123 7124 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7125 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7126 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7127 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7128 return true; 7129 } 7130 7131 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7132 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7133 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7134 return true; 7135 } 7136 7137 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7138 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7139 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7140 return true; 7141 } 7142 7143 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7144 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7145 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7146 return true; 7147 } 7148 7149 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7150 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7151 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7152 return true; 7153 } 7154 7155 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7156 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7157 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7158 return true; 7159 } 7160 #endif 7161 7162 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7163 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7164 #ifdef ENABLE_CLASSIC 7165 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7166 #endif 7167 if (connection->state != SENT_DISCONNECT){ 7168 connection->state = SENT_DISCONNECT; 7169 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7170 return true; 7171 } 7172 } 7173 7174 #ifdef ENABLE_CLASSIC 7175 uint16_t sniff_min_interval; 7176 switch (connection->sniff_min_interval){ 7177 case 0: 7178 break; 7179 case 0xffff: 7180 connection->sniff_min_interval = 0; 7181 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7182 return true; 7183 default: 7184 sniff_min_interval = connection->sniff_min_interval; 7185 connection->sniff_min_interval = 0; 7186 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7187 return true; 7188 } 7189 7190 if (connection->sniff_subrating_max_latency != 0xffff){ 7191 uint16_t max_latency = connection->sniff_subrating_max_latency; 7192 connection->sniff_subrating_max_latency = 0; 7193 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7194 return true; 7195 } 7196 7197 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7198 uint8_t service_type = (uint8_t) connection->qos_service_type; 7199 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7200 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); 7201 return true; 7202 } 7203 7204 if (connection->request_role != HCI_ROLE_INVALID){ 7205 hci_role_t role = connection->request_role; 7206 connection->request_role = HCI_ROLE_INVALID; 7207 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7208 return true; 7209 } 7210 #endif 7211 7212 if (connection->gap_connection_tasks != 0){ 7213 #ifdef ENABLE_CLASSIC 7214 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7215 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7216 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7217 return true; 7218 } 7219 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7220 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7221 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7222 return true; 7223 } 7224 #endif 7225 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7226 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7227 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7228 return true; 7229 } 7230 #ifdef ENABLE_BLE 7231 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7232 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7233 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7234 return true; 7235 } 7236 #endif 7237 } 7238 7239 #ifdef ENABLE_BLE 7240 switch (connection->le_con_parameter_update_state){ 7241 // response to L2CAP CON PARAMETER UPDATE REQUEST 7242 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7243 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7244 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7245 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7246 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7247 return true; 7248 case CON_PARAMETER_UPDATE_REPLY: 7249 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7250 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7251 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7252 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7253 return true; 7254 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7255 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7256 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7257 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7258 return true; 7259 default: 7260 break; 7261 } 7262 if (connection->le_phy_update_all_phys != 0xffu){ 7263 uint8_t all_phys = connection->le_phy_update_all_phys; 7264 connection->le_phy_update_all_phys = 0xff; 7265 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); 7266 return true; 7267 } 7268 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7269 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7270 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7271 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7272 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7273 return true; 7274 } 7275 if (connection->le_past_advertising_handle != 0xff){ 7276 uint8_t advertising_handle = connection->le_past_advertising_handle; 7277 connection->le_past_advertising_handle = 0xff; 7278 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7279 return true; 7280 } 7281 #endif 7282 #endif 7283 } 7284 return false; 7285 } 7286 7287 static void hci_run(void){ 7288 7289 // stack state sub statemachines 7290 switch (hci_stack->state) { 7291 case HCI_STATE_INITIALIZING: 7292 hci_initializing_run(); 7293 break; 7294 case HCI_STATE_HALTING: 7295 hci_halting_run(); 7296 break; 7297 case HCI_STATE_FALLING_ASLEEP: 7298 hci_falling_asleep_run(); 7299 break; 7300 default: 7301 break; 7302 } 7303 7304 // allow to run after initialization to working transition 7305 if (hci_stack->state != HCI_STATE_WORKING){ 7306 return; 7307 } 7308 7309 bool done; 7310 7311 // send continuation fragments first, as they block the prepared packet buffer 7312 done = hci_run_acl_fragments(); 7313 if (done) return; 7314 7315 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7316 done = hci_run_iso_fragments(); 7317 if (done) return; 7318 #endif 7319 7320 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7321 // send host num completed packets next as they don't require num_cmd_packets > 0 7322 if (!hci_can_send_comand_packet_transport()) return; 7323 if (hci_stack->host_completed_packets){ 7324 hci_host_num_completed_packets(); 7325 return; 7326 } 7327 #endif 7328 7329 if (!hci_can_send_command_packet_now()) return; 7330 7331 // global/non-connection oriented commands 7332 7333 7334 #ifdef ENABLE_CLASSIC 7335 // general gap classic 7336 done = hci_run_general_gap_classic(); 7337 if (done) return; 7338 #endif 7339 7340 #ifdef ENABLE_BLE 7341 // general gap le 7342 done = hci_run_general_gap_le(); 7343 if (done) return; 7344 7345 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7346 // ISO related tasks, e.g. BIG create/terminate/sync 7347 done = hci_run_iso_tasks(); 7348 if (done) return; 7349 #endif 7350 #endif 7351 7352 // send pending HCI commands 7353 hci_run_general_pending_commands(); 7354 } 7355 7356 #ifdef ENABLE_CLASSIC 7357 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7358 // bits 6-9 are 'don't use' 7359 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7360 7361 // restrict packet types to local and remote supported 7362 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7363 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7364 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7365 } 7366 #endif 7367 7368 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7369 // house-keeping 7370 7371 #ifdef ENABLE_CLASSIC 7372 bd_addr_t addr; 7373 hci_connection_t * conn; 7374 #endif 7375 #ifdef ENABLE_LE_CENTRAL 7376 uint8_t initiator_filter_policy; 7377 #endif 7378 7379 uint16_t opcode = little_endian_read_16(packet, 0); 7380 switch (opcode) { 7381 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7382 hci_stack->loopback_mode = packet[3]; 7383 break; 7384 7385 #ifdef ENABLE_CLASSIC 7386 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7387 reverse_bd_addr(&packet[3], addr); 7388 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7389 7390 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7391 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7392 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7393 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7394 } 7395 7396 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7397 if (!conn) { 7398 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7399 if (!conn) { 7400 // notify client that alloc failed 7401 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7402 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7403 } 7404 conn->state = SEND_CREATE_CONNECTION; 7405 } 7406 7407 log_info("conn state %u", conn->state); 7408 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7409 switch (conn->state) { 7410 // if connection active exists 7411 case OPEN: 7412 // and OPEN, emit connection complete command 7413 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7414 // packet not sent to controller 7415 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7416 case RECEIVED_DISCONNECTION_COMPLETE: 7417 // create connection triggered in disconnect complete event, let's do it now 7418 break; 7419 case SEND_CREATE_CONNECTION: 7420 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7421 if (hci_classic_operation_active()){ 7422 return ERROR_CODE_SUCCESS; 7423 } 7424 #endif 7425 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7426 break; 7427 default: 7428 // otherwise, just ignore as it is already in the open process 7429 // packet not sent to controller 7430 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7431 } 7432 conn->state = SENT_CREATE_CONNECTION; 7433 7434 // track outgoing connection 7435 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7436 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7437 break; 7438 7439 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7440 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7441 if (conn == NULL) { 7442 // neither SCO nor ACL connection for con handle 7443 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7444 } else { 7445 uint16_t remote_supported_sco_packets; 7446 switch (conn->address_type){ 7447 case BD_ADDR_TYPE_ACL: 7448 // assert SCO connection does not exit 7449 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7450 return ERROR_CODE_COMMAND_DISALLOWED; 7451 } 7452 // cache remote sco packet types 7453 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7454 7455 // allocate connection struct 7456 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7457 HCI_ROLE_MASTER); 7458 if (!conn) { 7459 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7460 } 7461 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7462 break; 7463 case BD_ADDR_TYPE_SCO: 7464 // update of existing SCO connection 7465 break; 7466 default: 7467 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7468 } 7469 } 7470 7471 // conn refers to hci connection of type sco now 7472 7473 conn->state = SENT_CREATE_CONNECTION; 7474 7475 // track outgoing connection to handle command status with error 7476 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7477 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7478 7479 // setup_synchronous_connection? Voice setting at offset 22 7480 // TODO: compare to current setting if sco connection already active 7481 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7482 7483 // derive sco payload length from packet types 7484 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7485 break; 7486 7487 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7488 // get SCO connection 7489 reverse_bd_addr(&packet[3], addr); 7490 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7491 if (conn == NULL){ 7492 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7493 } 7494 7495 conn->state = ACCEPTED_CONNECTION_REQUEST; 7496 7497 // track outgoing connection to handle command status with error 7498 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7499 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7500 7501 // accept_synchronous_connection? Voice setting at offset 18 7502 // TODO: compare to current setting if sco connection already active 7503 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7504 7505 // derive sco payload length from packet types 7506 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7507 break; 7508 #endif 7509 7510 #ifdef ENABLE_BLE 7511 #ifdef ENABLE_LE_CENTRAL 7512 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7513 // white list used? 7514 initiator_filter_policy = packet[7]; 7515 switch (initiator_filter_policy) { 7516 case 0: 7517 // whitelist not used 7518 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7519 break; 7520 case 1: 7521 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7522 break; 7523 default: 7524 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7525 break; 7526 } 7527 // track outgoing connection 7528 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7529 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7530 break; 7531 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7532 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7533 // white list used? 7534 initiator_filter_policy = packet[3]; 7535 switch (initiator_filter_policy) { 7536 case 0: 7537 // whitelist not used 7538 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7539 break; 7540 case 1: 7541 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7542 break; 7543 default: 7544 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7545 break; 7546 } 7547 // track outgoing connection 7548 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7549 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7550 break; 7551 #endif 7552 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7553 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7554 break; 7555 #endif 7556 #endif /* ENABLE_BLE */ 7557 default: 7558 break; 7559 } 7560 7561 hci_stack->num_cmd_packets--; 7562 7563 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7564 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7565 if (err != 0){ 7566 return ERROR_CODE_HARDWARE_FAILURE; 7567 } 7568 return ERROR_CODE_SUCCESS; 7569 } 7570 7571 // disconnect because of security block 7572 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7573 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7574 if (!connection) return; 7575 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7576 } 7577 7578 7579 // Configure Secure Simple Pairing 7580 7581 #ifdef ENABLE_CLASSIC 7582 7583 // enable will enable SSP during init 7584 void gap_ssp_set_enable(int enable){ 7585 hci_stack->ssp_enable = enable; 7586 } 7587 7588 static int hci_local_ssp_activated(void){ 7589 return gap_ssp_supported() && hci_stack->ssp_enable; 7590 } 7591 7592 // if set, BTstack will respond to io capability request using authentication requirement 7593 void gap_ssp_set_io_capability(int io_capability){ 7594 hci_stack->ssp_io_capability = io_capability; 7595 } 7596 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7597 hci_stack->ssp_authentication_requirement = authentication_requirement; 7598 } 7599 7600 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7601 void gap_ssp_set_auto_accept(int auto_accept){ 7602 hci_stack->ssp_auto_accept = auto_accept; 7603 } 7604 7605 void gap_secure_connections_enable(bool enable){ 7606 hci_stack->secure_connections_enable = enable; 7607 } 7608 bool gap_secure_connections_active(void){ 7609 return hci_stack->secure_connections_active; 7610 } 7611 7612 #endif 7613 7614 // va_list part of hci_send_cmd 7615 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7616 if (!hci_can_send_command_packet_now()){ 7617 log_error("hci_send_cmd called but cannot send packet now"); 7618 return ERROR_CODE_COMMAND_DISALLOWED; 7619 } 7620 7621 // for HCI INITIALIZATION 7622 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7623 hci_stack->last_cmd_opcode = cmd->opcode; 7624 7625 hci_reserve_packet_buffer(); 7626 uint8_t * packet = hci_stack->hci_packet_buffer; 7627 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7628 uint8_t status = hci_send_cmd_packet(packet, size); 7629 7630 // release packet buffer on error or for synchronous transport implementations 7631 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7632 hci_release_packet_buffer(); 7633 hci_emit_transport_packet_sent(); 7634 } 7635 7636 return status; 7637 } 7638 7639 /** 7640 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7641 */ 7642 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7643 va_list argptr; 7644 va_start(argptr, cmd); 7645 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7646 va_end(argptr); 7647 return status; 7648 } 7649 7650 // Create various non-HCI events. 7651 // TODO: generalize, use table similar to hci_create_command 7652 7653 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7654 // dump packet 7655 if (dump) { 7656 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7657 } 7658 7659 // dispatch to all event handlers 7660 btstack_linked_list_iterator_t it; 7661 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7662 while (btstack_linked_list_iterator_has_next(&it)){ 7663 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7664 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7665 } 7666 } 7667 7668 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7669 if (!hci_stack->acl_packet_handler) return; 7670 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7671 } 7672 7673 #ifdef ENABLE_CLASSIC 7674 static void hci_notify_if_sco_can_send_now(void){ 7675 // notify SCO sender if waiting 7676 if (!hci_stack->sco_waiting_for_can_send_now) return; 7677 if (hci_can_send_sco_packet_now()){ 7678 hci_stack->sco_waiting_for_can_send_now = 0; 7679 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7680 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7681 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7682 } 7683 } 7684 7685 // parsing end emitting has been merged to reduce code size 7686 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7687 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7688 7689 uint8_t * eir_data; 7690 ad_context_t context; 7691 const uint8_t * name; 7692 uint8_t name_len; 7693 7694 if (size < 3) return; 7695 7696 int event_type = hci_event_packet_get_type(packet); 7697 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7698 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7699 7700 switch (event_type){ 7701 case HCI_EVENT_INQUIRY_RESULT: 7702 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7703 if (size != (3 + (num_responses * 14))) return; 7704 break; 7705 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7706 if (size != 257) return; 7707 if (num_responses != 1) return; 7708 break; 7709 default: 7710 return; 7711 } 7712 7713 // event[1] is set at the end 7714 int i; 7715 for (i=0; i<num_responses;i++){ 7716 memset(event, 0, sizeof(event)); 7717 event[0] = GAP_EVENT_INQUIRY_RESULT; 7718 uint8_t event_size = 27; // if name is not set by EIR 7719 7720 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7721 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7722 (void)memcpy(&event[9], 7723 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7724 3); // class of device 7725 (void)memcpy(&event[12], 7726 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7727 2); // clock offset 7728 7729 switch (event_type){ 7730 case HCI_EVENT_INQUIRY_RESULT: 7731 // 14,15,16,17 = 0, size 18 7732 break; 7733 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7734 event[14] = 1; 7735 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7736 // 16,17 = 0, size 18 7737 break; 7738 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7739 event[14] = 1; 7740 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7741 // EIR packets only contain a single inquiry response 7742 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7743 name = NULL; 7744 // Iterate over EIR data 7745 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7746 uint8_t data_type = ad_iterator_get_data_type(&context); 7747 uint8_t data_size = ad_iterator_get_data_len(&context); 7748 const uint8_t * data = ad_iterator_get_data(&context); 7749 // Prefer Complete Local Name over Shortened Local Name 7750 switch (data_type){ 7751 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7752 if (name) continue; 7753 /* fall through */ 7754 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7755 name = data; 7756 name_len = data_size; 7757 break; 7758 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7759 if (data_size != 8) break; 7760 event[16] = 1; 7761 memcpy(&event[17], data, 8); 7762 break; 7763 default: 7764 break; 7765 } 7766 } 7767 if (name){ 7768 event[25] = 1; 7769 // truncate name if needed 7770 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7771 event[26] = len; 7772 (void)memcpy(&event[27], name, len); 7773 event_size += len; 7774 } 7775 break; 7776 default: 7777 return; 7778 } 7779 event[1] = event_size - 2; 7780 hci_emit_event(event, event_size, 1); 7781 } 7782 } 7783 #endif 7784 7785 void hci_emit_state(void){ 7786 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7787 uint8_t event[3]; 7788 event[0] = BTSTACK_EVENT_STATE; 7789 event[1] = sizeof(event) - 2u; 7790 event[2] = hci_stack->state; 7791 hci_emit_event(event, sizeof(event), 1); 7792 } 7793 7794 #ifdef ENABLE_CLASSIC 7795 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7796 uint8_t event[13]; 7797 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7798 event[1] = sizeof(event) - 2; 7799 event[2] = status; 7800 little_endian_store_16(event, 3, con_handle); 7801 reverse_bd_addr(address, &event[5]); 7802 event[11] = 1; // ACL connection 7803 event[12] = 0; // encryption disabled 7804 hci_emit_event(event, sizeof(event), 1); 7805 } 7806 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7807 if (disable_l2cap_timeouts) return; 7808 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7809 uint8_t event[4]; 7810 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7811 event[1] = sizeof(event) - 2; 7812 little_endian_store_16(event, 2, conn->con_handle); 7813 hci_emit_event(event, sizeof(event), 1); 7814 } 7815 #endif 7816 7817 #ifdef ENABLE_BLE 7818 #ifdef ENABLE_LE_CENTRAL 7819 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){ 7820 uint8_t event[21]; 7821 event[0] = HCI_EVENT_LE_META; 7822 event[1] = sizeof(event) - 2u; 7823 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7824 event[3] = status; 7825 little_endian_store_16(event, 4, con_handle); 7826 event[6] = 0; // TODO: role 7827 event[7] = address_type; 7828 reverse_bd_addr(address, &event[8]); 7829 little_endian_store_16(event, 14, 0); // interval 7830 little_endian_store_16(event, 16, 0); // latency 7831 little_endian_store_16(event, 18, 0); // supervision timeout 7832 event[20] = 0; // master clock accuracy 7833 hci_emit_event(event, sizeof(event), 1); 7834 } 7835 #endif 7836 #endif 7837 7838 static void hci_emit_transport_packet_sent(void){ 7839 // notify upper stack that it might be possible to send again 7840 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7841 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7842 } 7843 7844 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7845 uint8_t event[6]; 7846 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7847 event[1] = sizeof(event) - 2u; 7848 event[2] = 0; // status = OK 7849 little_endian_store_16(event, 3, con_handle); 7850 event[5] = reason; 7851 hci_emit_event(event, sizeof(event), 1); 7852 } 7853 7854 static void hci_emit_nr_connections_changed(void){ 7855 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7856 uint8_t event[3]; 7857 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7858 event[1] = sizeof(event) - 2u; 7859 event[2] = nr_hci_connections(); 7860 hci_emit_event(event, sizeof(event), 1); 7861 } 7862 7863 static void hci_emit_hci_open_failed(void){ 7864 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7865 uint8_t event[2]; 7866 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7867 event[1] = sizeof(event) - 2u; 7868 hci_emit_event(event, sizeof(event), 1); 7869 } 7870 7871 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7872 log_info("hci_emit_dedicated_bonding_result %u ", status); 7873 uint8_t event[9]; 7874 int pos = 0; 7875 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7876 event[pos++] = sizeof(event) - 2u; 7877 event[pos++] = status; 7878 reverse_bd_addr(address, &event[pos]); 7879 hci_emit_event(event, sizeof(event), 1); 7880 } 7881 7882 7883 #ifdef ENABLE_CLASSIC 7884 7885 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7886 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7887 uint8_t event[5]; 7888 int pos = 0; 7889 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7890 event[pos++] = sizeof(event) - 2; 7891 little_endian_store_16(event, 2, con_handle); 7892 pos += 2; 7893 event[pos++] = level; 7894 hci_emit_event(event, sizeof(event), 1); 7895 } 7896 7897 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7898 if (!connection) return LEVEL_0; 7899 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7900 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7901 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7902 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7903 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7904 // LEVEL 4 always requires 128 bit encrytion key size 7905 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7906 security_level = LEVEL_3; 7907 } 7908 return security_level; 7909 } 7910 7911 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7912 uint8_t event[4]; 7913 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7914 event[1] = sizeof(event) - 2; 7915 event[2] = discoverable; 7916 event[3] = connectable; 7917 hci_emit_event(event, sizeof(event), 1); 7918 } 7919 7920 // query if remote side supports eSCO 7921 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7922 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7923 if (!connection) return false; 7924 return (connection->remote_supported_features[0] & 1) != 0; 7925 } 7926 7927 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 7928 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7929 if (!connection) return 0; 7930 return connection->remote_supported_sco_packets; 7931 } 7932 7933 static bool hci_ssp_supported(hci_connection_t * connection){ 7934 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7935 return (connection->bonding_flags & mask) == mask; 7936 } 7937 7938 // query if remote side supports SSP 7939 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7940 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7941 if (!connection) return false; 7942 return hci_ssp_supported(connection) ? 1 : 0; 7943 } 7944 7945 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7946 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7947 } 7948 7949 /** 7950 * Check if remote supported features query has completed 7951 */ 7952 bool hci_remote_features_available(hci_con_handle_t handle){ 7953 hci_connection_t * connection = hci_connection_for_handle(handle); 7954 if (!connection) return false; 7955 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7956 } 7957 7958 /** 7959 * Trigger remote supported features query 7960 */ 7961 7962 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7963 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7964 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7965 } 7966 } 7967 7968 void hci_remote_features_query(hci_con_handle_t con_handle){ 7969 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7970 if (!connection) return; 7971 hci_trigger_remote_features_for_connection(connection); 7972 hci_run(); 7973 } 7974 7975 // GAP API 7976 /** 7977 * @bbrief enable/disable bonding. default is enabled 7978 * @praram enabled 7979 */ 7980 void gap_set_bondable_mode(int enable){ 7981 hci_stack->bondable = enable ? 1 : 0; 7982 } 7983 /** 7984 * @brief Get bondable mode. 7985 * @return 1 if bondable 7986 */ 7987 int gap_get_bondable_mode(void){ 7988 return hci_stack->bondable; 7989 } 7990 7991 /** 7992 * @brief map link keys to security levels 7993 */ 7994 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7995 switch (link_key_type){ 7996 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7997 return LEVEL_4; 7998 case COMBINATION_KEY: 7999 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8000 return LEVEL_3; 8001 default: 8002 return LEVEL_2; 8003 } 8004 } 8005 8006 /** 8007 * @brief map link keys to secure connection yes/no 8008 */ 8009 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8010 switch (link_key_type){ 8011 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8012 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8013 return true; 8014 default: 8015 return false; 8016 } 8017 } 8018 8019 /** 8020 * @brief map link keys to authenticated 8021 */ 8022 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8023 switch (link_key_type){ 8024 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8025 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8026 return true; 8027 default: 8028 return false; 8029 } 8030 } 8031 8032 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8033 log_info("gap_mitm_protection_required_for_security_level %u", level); 8034 return level > LEVEL_2; 8035 } 8036 8037 /** 8038 * @brief get current security level 8039 */ 8040 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8041 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8042 if (!connection) return LEVEL_0; 8043 return gap_security_level_for_connection(connection); 8044 } 8045 8046 /** 8047 * @brief request connection to device to 8048 * @result GAP_AUTHENTICATION_RESULT 8049 */ 8050 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8051 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8052 if (!connection){ 8053 hci_emit_security_level(con_handle, LEVEL_0); 8054 return; 8055 } 8056 8057 btstack_assert(hci_is_le_connection(connection) == false); 8058 8059 // 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) 8060 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8061 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8062 requested_level = LEVEL_4; 8063 } 8064 8065 gap_security_level_t current_level = gap_security_level(con_handle); 8066 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8067 requested_level, connection->requested_security_level, current_level); 8068 8069 // authentication active if authentication request was sent or planned level > 0 8070 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8071 if (authentication_active){ 8072 // authentication already active 8073 if (connection->requested_security_level < requested_level){ 8074 // increase requested level as new level is higher 8075 // TODO: handle re-authentication when done 8076 connection->requested_security_level = requested_level; 8077 } 8078 } else { 8079 // no request active, notify if security sufficient 8080 if (requested_level <= current_level){ 8081 hci_emit_security_level(con_handle, current_level); 8082 return; 8083 } 8084 8085 // store request 8086 connection->requested_security_level = requested_level; 8087 8088 // start to authenticate connection 8089 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8090 8091 // request remote features if not already active, also trigger hci_run 8092 hci_remote_features_query(con_handle); 8093 } 8094 } 8095 8096 /** 8097 * @brief start dedicated bonding with device. disconnect after bonding 8098 * @param device 8099 * @param request MITM protection 8100 * @result GAP_DEDICATED_BONDING_COMPLETE 8101 */ 8102 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8103 8104 // create connection state machine 8105 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8106 8107 if (!connection){ 8108 return BTSTACK_MEMORY_ALLOC_FAILED; 8109 } 8110 8111 // delete link key 8112 gap_drop_link_key_for_bd_addr(device); 8113 8114 // configure LEVEL_2/3, dedicated bonding 8115 connection->state = SEND_CREATE_CONNECTION; 8116 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8117 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8118 connection->bonding_flags = BONDING_DEDICATED; 8119 8120 hci_run(); 8121 8122 return 0; 8123 } 8124 8125 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8126 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8127 if (connection == NULL){ 8128 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8129 } 8130 if (defer){ 8131 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8132 } else { 8133 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8134 // trigger disconnect 8135 hci_run(); 8136 } 8137 return ERROR_CODE_SUCCESS; 8138 } 8139 8140 void gap_set_local_name(const char * local_name){ 8141 hci_stack->local_name = local_name; 8142 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8143 // also update EIR if not set by user 8144 if (hci_stack->eir_data == NULL){ 8145 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8146 } 8147 hci_run(); 8148 } 8149 #endif 8150 8151 8152 #ifdef ENABLE_BLE 8153 8154 #ifdef ENABLE_LE_CENTRAL 8155 void gap_start_scan(void){ 8156 hci_stack->le_scanning_enabled = true; 8157 hci_run(); 8158 } 8159 8160 void gap_stop_scan(void){ 8161 hci_stack->le_scanning_enabled = false; 8162 hci_run(); 8163 } 8164 8165 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8166 hci_stack->le_scan_type = scan_type; 8167 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8168 hci_stack->le_scan_interval = scan_interval; 8169 hci_stack->le_scan_window = scan_window; 8170 hci_stack->le_scanning_param_update = true; 8171 hci_run(); 8172 } 8173 8174 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8175 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8176 } 8177 8178 void gap_set_scan_duplicate_filter(bool enabled){ 8179 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8180 } 8181 8182 void gap_set_scan_phys(uint8_t phys){ 8183 // LE Coded and LE 1M PHY 8184 hci_stack->le_scan_phys = phys & 0x05; 8185 } 8186 8187 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 8188 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8189 if (!conn){ 8190 // disallow if le connection is already outgoing 8191 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8192 log_error("le connection already active"); 8193 return ERROR_CODE_COMMAND_DISALLOWED; 8194 } 8195 8196 log_info("gap_connect: no connection exists yet, creating context"); 8197 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8198 if (!conn){ 8199 // notify client that alloc failed 8200 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8201 log_info("gap_connect: failed to alloc hci_connection_t"); 8202 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8203 } 8204 8205 // set le connecting state 8206 if (hci_is_le_connection_type(addr_type)){ 8207 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8208 } 8209 8210 conn->state = SEND_CREATE_CONNECTION; 8211 log_info("gap_connect: send create connection next"); 8212 hci_run(); 8213 return ERROR_CODE_SUCCESS; 8214 } 8215 8216 if (!hci_is_le_connection(conn) || 8217 (conn->state == SEND_CREATE_CONNECTION) || 8218 (conn->state == SENT_CREATE_CONNECTION)) { 8219 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8220 log_error("gap_connect: classic connection or connect is already being created"); 8221 return GATT_CLIENT_IN_WRONG_STATE; 8222 } 8223 8224 // check if connection was just disconnected 8225 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8226 log_info("gap_connect: send create connection (again)"); 8227 conn->state = SEND_CREATE_CONNECTION; 8228 hci_run(); 8229 return ERROR_CODE_SUCCESS; 8230 } 8231 8232 log_info("gap_connect: context exists with state %u", conn->state); 8233 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8234 hci_run(); 8235 return ERROR_CODE_SUCCESS; 8236 } 8237 8238 // @assumption: only a single outgoing LE Connection exists 8239 static hci_connection_t * gap_get_outgoing_connection(void){ 8240 btstack_linked_item_t *it; 8241 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8242 hci_connection_t * conn = (hci_connection_t *) it; 8243 if (!hci_is_le_connection(conn)) continue; 8244 switch (conn->state){ 8245 case SEND_CREATE_CONNECTION: 8246 case SENT_CREATE_CONNECTION: 8247 return conn; 8248 default: 8249 break; 8250 }; 8251 } 8252 return NULL; 8253 } 8254 8255 uint8_t gap_connect_cancel(void){ 8256 hci_connection_t * conn; 8257 switch (hci_stack->le_connecting_request){ 8258 case LE_CONNECTING_IDLE: 8259 break; 8260 case LE_CONNECTING_WHITELIST: 8261 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8262 hci_run(); 8263 break; 8264 case LE_CONNECTING_DIRECT: 8265 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8266 conn = gap_get_outgoing_connection(); 8267 if (conn == NULL){ 8268 hci_run(); 8269 } else { 8270 switch (conn->state){ 8271 case SEND_CREATE_CONNECTION: 8272 // skip sending create connection and emit event instead 8273 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8274 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8275 btstack_memory_hci_connection_free( conn ); 8276 break; 8277 case SENT_CREATE_CONNECTION: 8278 // let hci_run_general_gap_le cancel outgoing connection 8279 hci_run(); 8280 break; 8281 default: 8282 break; 8283 } 8284 } 8285 break; 8286 default: 8287 btstack_unreachable(); 8288 break; 8289 } 8290 return ERROR_CODE_SUCCESS; 8291 } 8292 8293 /** 8294 * @brief Set connection parameters for outgoing connections 8295 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8296 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8297 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8298 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8299 * @param conn_latency, default: 4 8300 * @param supervision_timeout (unit: 10ms), default: 720 ms 8301 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8302 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8303 */ 8304 8305 void gap_set_connection_phys(uint8_t phys){ 8306 // LE Coded, LE 1M, LE 2M PHY 8307 hci_stack->le_connection_phys = phys & 7; 8308 } 8309 8310 #endif 8311 8312 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8313 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8314 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8315 hci_stack->le_connection_scan_interval = conn_scan_interval; 8316 hci_stack->le_connection_scan_window = conn_scan_window; 8317 hci_stack->le_connection_interval_min = conn_interval_min; 8318 hci_stack->le_connection_interval_max = conn_interval_max; 8319 hci_stack->le_connection_latency = conn_latency; 8320 hci_stack->le_supervision_timeout = supervision_timeout; 8321 hci_stack->le_minimum_ce_length = min_ce_length; 8322 hci_stack->le_maximum_ce_length = max_ce_length; 8323 } 8324 8325 /** 8326 * @brief Updates the connection parameters for a given LE connection 8327 * @param handle 8328 * @param conn_interval_min (unit: 1.25ms) 8329 * @param conn_interval_max (unit: 1.25ms) 8330 * @param conn_latency 8331 * @param supervision_timeout (unit: 10ms) 8332 * @return 0 if ok 8333 */ 8334 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8335 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8336 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8337 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8338 connection->le_conn_interval_min = conn_interval_min; 8339 connection->le_conn_interval_max = conn_interval_max; 8340 connection->le_conn_latency = conn_latency; 8341 connection->le_supervision_timeout = supervision_timeout; 8342 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8343 hci_run(); 8344 return 0; 8345 } 8346 8347 /** 8348 * @brief Request an update of the connection parameter for a given LE connection 8349 * @param handle 8350 * @param conn_interval_min (unit: 1.25ms) 8351 * @param conn_interval_max (unit: 1.25ms) 8352 * @param conn_latency 8353 * @param supervision_timeout (unit: 10ms) 8354 * @return 0 if ok 8355 */ 8356 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8357 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8358 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8359 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8360 connection->le_conn_interval_min = conn_interval_min; 8361 connection->le_conn_interval_max = conn_interval_max; 8362 connection->le_conn_latency = conn_latency; 8363 connection->le_supervision_timeout = supervision_timeout; 8364 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8365 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8366 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8367 return 0; 8368 } 8369 8370 #ifdef ENABLE_LE_PERIPHERAL 8371 8372 /** 8373 * @brief Set Advertisement Data 8374 * @param advertising_data_length 8375 * @param advertising_data (max 31 octets) 8376 * @note data is not copied, pointer has to stay valid 8377 */ 8378 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8379 hci_stack->le_advertisements_data_len = advertising_data_length; 8380 hci_stack->le_advertisements_data = advertising_data; 8381 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8382 hci_run(); 8383 } 8384 8385 /** 8386 * @brief Set Scan Response Data 8387 * @param advertising_data_length 8388 * @param advertising_data (max 31 octets) 8389 * @note data is not copied, pointer has to stay valid 8390 */ 8391 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8392 hci_stack->le_scan_response_data_len = scan_response_data_length; 8393 hci_stack->le_scan_response_data = scan_response_data; 8394 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8395 hci_run(); 8396 } 8397 8398 /** 8399 * @brief Set Advertisement Parameters 8400 * @param adv_int_min 8401 * @param adv_int_max 8402 * @param adv_type 8403 * @param direct_address_type 8404 * @param direct_address 8405 * @param channel_map 8406 * @param filter_policy 8407 * 8408 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8409 */ 8410 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8411 uint8_t direct_address_typ, bd_addr_t direct_address, 8412 uint8_t channel_map, uint8_t filter_policy) { 8413 8414 hci_stack->le_advertisements_interval_min = adv_int_min; 8415 hci_stack->le_advertisements_interval_max = adv_int_max; 8416 hci_stack->le_advertisements_type = adv_type; 8417 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8418 hci_stack->le_advertisements_channel_map = channel_map; 8419 hci_stack->le_advertisements_filter_policy = filter_policy; 8420 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8421 6); 8422 8423 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8424 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8425 hci_run(); 8426 } 8427 8428 /** 8429 * @brief Enable/Disable Advertisements 8430 * @param enabled 8431 */ 8432 void gap_advertisements_enable(int enabled){ 8433 if (enabled == 0){ 8434 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8435 } else { 8436 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8437 } 8438 hci_update_advertisements_enabled_for_current_roles(); 8439 hci_run(); 8440 } 8441 8442 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8443 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8444 btstack_linked_list_iterator_t it; 8445 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8446 while (btstack_linked_list_iterator_has_next(&it)){ 8447 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8448 if ( item->advertising_handle == advertising_handle ) { 8449 return item; 8450 } 8451 } 8452 return NULL; 8453 } 8454 8455 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8456 hci_stack->le_resolvable_private_address_update_s = update_s; 8457 hci_run(); 8458 return ERROR_CODE_SUCCESS; 8459 } 8460 8461 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8462 // find free advertisement handle 8463 uint8_t advertisement_handle; 8464 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8465 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8466 } 8467 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8468 // clear 8469 memset(storage, 0, sizeof(le_advertising_set_t)); 8470 // copy params 8471 storage->advertising_handle = advertisement_handle; 8472 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8473 // add to list 8474 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8475 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8476 *out_advertising_handle = advertisement_handle; 8477 // set tasks and start 8478 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8479 hci_run(); 8480 return ERROR_CODE_SUCCESS; 8481 } 8482 8483 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8484 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8485 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8486 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8487 // set tasks and start 8488 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8489 hci_run(); 8490 return ERROR_CODE_SUCCESS; 8491 } 8492 8493 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8494 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8495 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8496 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8497 return ERROR_CODE_SUCCESS; 8498 } 8499 8500 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8501 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8502 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8503 memcpy(advertising_set->random_address, random_address, 6); 8504 // set tasks and start 8505 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8506 hci_run(); 8507 return ERROR_CODE_SUCCESS; 8508 } 8509 8510 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8511 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8512 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8513 advertising_set->adv_data = advertising_data; 8514 advertising_set->adv_data_len = advertising_data_length; 8515 // set tasks and start 8516 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8517 hci_run(); 8518 return ERROR_CODE_SUCCESS; 8519 } 8520 8521 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){ 8522 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8523 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8524 advertising_set->scan_data = scan_response_data; 8525 advertising_set->scan_data_len = scan_response_data_length; 8526 // set tasks and start 8527 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8528 hci_run(); 8529 return ERROR_CODE_SUCCESS; 8530 } 8531 8532 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8533 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8534 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8535 advertising_set->enable_timeout = timeout; 8536 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8537 // set tasks and start 8538 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8539 hci_run(); 8540 return ERROR_CODE_SUCCESS; 8541 } 8542 8543 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8544 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8545 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8546 // set tasks and start 8547 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8548 hci_run(); 8549 return ERROR_CODE_SUCCESS; 8550 } 8551 8552 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8553 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8554 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8555 // set tasks and start 8556 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8557 hci_run(); 8558 return ERROR_CODE_SUCCESS; 8559 } 8560 8561 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8562 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8563 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8564 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8565 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8566 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8567 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8568 // set tasks and start 8569 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8570 hci_run(); 8571 return ERROR_CODE_SUCCESS; 8572 } 8573 8574 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8575 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8576 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8577 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8578 return ERROR_CODE_SUCCESS; 8579 } 8580 8581 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8582 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8583 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8584 advertising_set->periodic_data = periodic_data; 8585 advertising_set->periodic_data_len = periodic_data_length; 8586 // set tasks and start 8587 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8588 hci_run(); 8589 return ERROR_CODE_SUCCESS; 8590 } 8591 8592 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8593 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8594 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8595 // set tasks and start 8596 advertising_set->periodic_include_adi = include_adi; 8597 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8598 hci_run(); 8599 return ERROR_CODE_SUCCESS; 8600 } 8601 8602 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8603 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8604 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8605 // set tasks and start 8606 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8607 hci_run(); 8608 return ERROR_CODE_SUCCESS; 8609 } 8610 8611 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8612 hci_stack->le_past_mode = mode; 8613 hci_stack->le_past_skip = skip; 8614 hci_stack->le_past_sync_timeout = sync_timeout; 8615 hci_stack->le_past_cte_type = cte_type; 8616 hci_stack->le_past_set_default_params = true; 8617 hci_run(); 8618 return ERROR_CODE_SUCCESS; 8619 } 8620 8621 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8622 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8623 if (hci_connection == NULL){ 8624 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8625 } 8626 hci_connection->le_past_sync_handle = sync_handle; 8627 hci_connection->le_past_service_data = service_data; 8628 hci_run(); 8629 return ERROR_CODE_SUCCESS; 8630 } 8631 8632 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8633 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8634 if (hci_connection == NULL){ 8635 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8636 } 8637 hci_connection->le_past_advertising_handle = advertising_handle; 8638 hci_connection->le_past_service_data = service_data; 8639 hci_run(); 8640 return ERROR_CODE_SUCCESS; 8641 } 8642 8643 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8644 8645 #endif 8646 8647 #endif 8648 8649 void hci_le_set_own_address_type(uint8_t own_address_type){ 8650 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8651 if (own_address_type == hci_stack->le_own_addr_type) return; 8652 hci_stack->le_own_addr_type = own_address_type; 8653 8654 #ifdef ENABLE_LE_PERIPHERAL 8655 // update advertisement parameters, too 8656 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8657 hci_run(); 8658 #endif 8659 #ifdef ENABLE_LE_CENTRAL 8660 // note: we don't update scan parameters or modify ongoing connection attempts 8661 #endif 8662 } 8663 8664 void hci_le_random_address_set(const bd_addr_t random_address){ 8665 memcpy(hci_stack->le_random_address, random_address, 6); 8666 hci_stack->le_random_address_set = true; 8667 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8668 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8669 if (hci_extended_advertising_supported()){ 8670 // force advertising set creation for LE Set Advertising Set Random Address 8671 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8672 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8673 } 8674 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8675 } 8676 #endif 8677 hci_run(); 8678 } 8679 8680 #endif 8681 8682 uint8_t gap_disconnect(hci_con_handle_t handle){ 8683 hci_connection_t * conn = hci_connection_for_handle(handle); 8684 if (!conn){ 8685 hci_emit_disconnection_complete(handle, 0); 8686 return 0; 8687 } 8688 // ignore if already disconnected 8689 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8690 return 0; 8691 } 8692 conn->state = SEND_DISCONNECT; 8693 hci_run(); 8694 return 0; 8695 } 8696 8697 int gap_read_rssi(hci_con_handle_t con_handle){ 8698 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8699 if (hci_connection == NULL) return 0; 8700 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8701 hci_run(); 8702 return 1; 8703 } 8704 8705 /** 8706 * @brief Get connection type 8707 * @param con_handle 8708 * @result connection_type 8709 */ 8710 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8711 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8712 if (!conn) return GAP_CONNECTION_INVALID; 8713 switch (conn->address_type){ 8714 case BD_ADDR_TYPE_LE_PUBLIC: 8715 case BD_ADDR_TYPE_LE_RANDOM: 8716 return GAP_CONNECTION_LE; 8717 case BD_ADDR_TYPE_SCO: 8718 return GAP_CONNECTION_SCO; 8719 case BD_ADDR_TYPE_ACL: 8720 return GAP_CONNECTION_ACL; 8721 default: 8722 return GAP_CONNECTION_INVALID; 8723 } 8724 } 8725 8726 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8727 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8728 if (!conn) return HCI_ROLE_INVALID; 8729 return (hci_role_t) conn->role; 8730 } 8731 8732 8733 #ifdef ENABLE_CLASSIC 8734 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8735 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8736 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8737 conn->request_role = role; 8738 hci_run(); 8739 return ERROR_CODE_SUCCESS; 8740 } 8741 #endif 8742 8743 #ifdef ENABLE_BLE 8744 8745 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){ 8746 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8747 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8748 8749 conn->le_phy_update_all_phys = all_phys; 8750 conn->le_phy_update_tx_phys = tx_phys; 8751 conn->le_phy_update_rx_phys = rx_phys; 8752 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8753 8754 hci_run(); 8755 8756 return 0; 8757 } 8758 8759 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8760 // check if already in list 8761 btstack_linked_list_iterator_t it; 8762 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8763 while (btstack_linked_list_iterator_has_next(&it)) { 8764 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8765 if (entry->address_type != address_type) { 8766 continue; 8767 } 8768 if (memcmp(entry->address, address, 6) != 0) { 8769 continue; 8770 } 8771 8772 // if already on controller: 8773 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8774 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8775 // drop remove request 8776 entry->state = LE_WHITELIST_ON_CONTROLLER; 8777 return ERROR_CODE_SUCCESS; 8778 } else { 8779 // disallow as already on controller 8780 return ERROR_CODE_COMMAND_DISALLOWED; 8781 } 8782 } 8783 8784 // assume scheduled to add 8785 return ERROR_CODE_COMMAND_DISALLOWED; 8786 } 8787 8788 // alloc and add to list 8789 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8790 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8791 entry->address_type = address_type; 8792 (void)memcpy(entry->address, address, 6); 8793 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8794 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8795 return ERROR_CODE_SUCCESS; 8796 } 8797 8798 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8799 btstack_linked_list_iterator_t it; 8800 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8801 while (btstack_linked_list_iterator_has_next(&it)){ 8802 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8803 if (entry->address_type != address_type) { 8804 continue; 8805 } 8806 if (memcmp(entry->address, address, 6) != 0) { 8807 continue; 8808 } 8809 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8810 // remove from controller if already present 8811 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8812 } else { 8813 // directly remove entry from whitelist 8814 btstack_linked_list_iterator_remove(&it); 8815 btstack_memory_whitelist_entry_free(entry); 8816 } 8817 return ERROR_CODE_SUCCESS; 8818 } 8819 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8820 } 8821 8822 static void hci_whitelist_clear(void){ 8823 btstack_linked_list_iterator_t it; 8824 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8825 while (btstack_linked_list_iterator_has_next(&it)){ 8826 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8827 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8828 // remove from controller if already present 8829 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8830 continue; 8831 } 8832 // directly remove entry from whitelist 8833 btstack_linked_list_iterator_remove(&it); 8834 btstack_memory_whitelist_entry_free(entry); 8835 } 8836 } 8837 8838 /** 8839 * @brief Clear Whitelist 8840 * @return 0 if ok 8841 */ 8842 uint8_t gap_whitelist_clear(void){ 8843 hci_whitelist_clear(); 8844 hci_run(); 8845 return ERROR_CODE_SUCCESS; 8846 } 8847 8848 /** 8849 * @brief Add Device to Whitelist 8850 * @param address_typ 8851 * @param address 8852 * @return 0 if ok 8853 */ 8854 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8855 uint8_t status = hci_whitelist_add(address_type, address); 8856 if (status){ 8857 return status; 8858 } 8859 hci_run(); 8860 return ERROR_CODE_SUCCESS; 8861 } 8862 8863 /** 8864 * @brief Remove Device from Whitelist 8865 * @param address_typ 8866 * @param address 8867 * @return 0 if ok 8868 */ 8869 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8870 uint8_t status = hci_whitelist_remove(address_type, address); 8871 if (status){ 8872 return status; 8873 } 8874 hci_run(); 8875 return ERROR_CODE_SUCCESS; 8876 } 8877 8878 #ifdef ENABLE_LE_CENTRAL 8879 /** 8880 * @brief Connect with Whitelist 8881 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8882 * @return - if ok 8883 */ 8884 uint8_t gap_connect_with_whitelist(void){ 8885 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8886 return ERROR_CODE_COMMAND_DISALLOWED; 8887 } 8888 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8889 hci_run(); 8890 return ERROR_CODE_SUCCESS; 8891 } 8892 8893 /** 8894 * @brief Auto Connection Establishment - Start Connecting to device 8895 * @param address_typ 8896 * @param address 8897 * @return 0 if ok 8898 */ 8899 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8900 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8901 return ERROR_CODE_COMMAND_DISALLOWED; 8902 } 8903 8904 uint8_t status = hci_whitelist_add(address_type, address); 8905 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8906 return status; 8907 } 8908 8909 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8910 8911 hci_run(); 8912 return ERROR_CODE_SUCCESS; 8913 } 8914 8915 /** 8916 * @brief Auto Connection Establishment - Stop Connecting to device 8917 * @param address_typ 8918 * @param address 8919 * @return 0 if ok 8920 */ 8921 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8922 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8923 return ERROR_CODE_COMMAND_DISALLOWED; 8924 } 8925 8926 hci_whitelist_remove(address_type, address); 8927 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8928 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8929 } 8930 hci_run(); 8931 return 0; 8932 } 8933 8934 /** 8935 * @brief Auto Connection Establishment - Stop everything 8936 * @note Convenience function to stop all active auto connection attempts 8937 */ 8938 uint8_t gap_auto_connection_stop_all(void){ 8939 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8940 return ERROR_CODE_COMMAND_DISALLOWED; 8941 } 8942 hci_whitelist_clear(); 8943 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8944 hci_run(); 8945 return ERROR_CODE_SUCCESS; 8946 } 8947 8948 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8949 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8950 if (!conn) return 0; 8951 return conn->le_connection_interval; 8952 } 8953 #endif 8954 #endif 8955 8956 #ifdef ENABLE_CLASSIC 8957 /** 8958 * @brief Set Extended Inquiry Response data 8959 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8960 * @note has to be done before stack starts up 8961 */ 8962 void gap_set_extended_inquiry_response(const uint8_t * data){ 8963 hci_stack->eir_data = data; 8964 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8965 hci_run(); 8966 } 8967 8968 /** 8969 * @brief Start GAP Classic Inquiry 8970 * @param duration in 1.28s units 8971 * @return 0 if ok 8972 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8973 */ 8974 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8975 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8976 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8977 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8978 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8979 } 8980 hci_stack->inquiry_state = duration_in_1280ms_units; 8981 hci_stack->inquiry_max_period_length = 0; 8982 hci_stack->inquiry_min_period_length = 0; 8983 hci_run(); 8984 return 0; 8985 } 8986 8987 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8988 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8989 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8990 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8991 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8992 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8993 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8994 8995 hci_stack->inquiry_state = duration; 8996 hci_stack->inquiry_max_period_length = max_period_length; 8997 hci_stack->inquiry_min_period_length = min_period_length; 8998 hci_run(); 8999 return 0; 9000 } 9001 9002 /** 9003 * @brief Stop GAP Classic Inquiry 9004 * @return 0 if ok 9005 */ 9006 int gap_inquiry_stop(void){ 9007 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9008 // emit inquiry complete event, before it even started 9009 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9010 hci_emit_event(event, sizeof(event), 1); 9011 return 0; 9012 } 9013 switch (hci_stack->inquiry_state){ 9014 case GAP_INQUIRY_STATE_ACTIVE: 9015 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9016 hci_run(); 9017 return ERROR_CODE_SUCCESS; 9018 case GAP_INQUIRY_STATE_PERIODIC: 9019 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9020 hci_run(); 9021 return ERROR_CODE_SUCCESS; 9022 default: 9023 return ERROR_CODE_COMMAND_DISALLOWED; 9024 } 9025 } 9026 9027 void gap_inquiry_set_lap(uint32_t lap){ 9028 hci_stack->inquiry_lap = lap; 9029 } 9030 9031 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9032 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9033 hci_stack->inquiry_scan_window = inquiry_scan_window; 9034 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9035 hci_run(); 9036 } 9037 9038 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9039 { 9040 hci_stack->inquiry_tx_power_level = tx_power; 9041 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9042 hci_run(); 9043 } 9044 9045 9046 /** 9047 * @brief Remote Name Request 9048 * @param addr 9049 * @param page_scan_repetition_mode 9050 * @param clock_offset only used when bit 15 is set 9051 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9052 */ 9053 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9054 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9055 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9056 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9057 hci_stack->remote_name_clock_offset = clock_offset; 9058 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9059 hci_run(); 9060 return 0; 9061 } 9062 9063 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9064 hci_stack->gap_pairing_state = state; 9065 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9066 hci_run(); 9067 return 0; 9068 } 9069 9070 /** 9071 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9072 * @param addr 9073 * @param pin_data 9074 * @param pin_len 9075 * @return 0 if ok 9076 */ 9077 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9078 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9079 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9080 hci_stack->gap_pairing_pin_len = pin_len; 9081 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9082 } 9083 9084 /** 9085 * @brief Legacy Pairing Pin Code Response 9086 * @param addr 9087 * @param pin 9088 * @return 0 if ok 9089 */ 9090 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9091 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9092 } 9093 9094 /** 9095 * @brief Abort Legacy Pairing 9096 * @param addr 9097 * @param pin 9098 * @return 0 if ok 9099 */ 9100 int gap_pin_code_negative(bd_addr_t addr){ 9101 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9102 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9103 } 9104 9105 /** 9106 * @brief SSP Passkey Response 9107 * @param addr 9108 * @param passkey 9109 * @return 0 if ok 9110 */ 9111 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9112 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9113 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9114 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9115 } 9116 9117 /** 9118 * @brief Abort SSP Passkey Entry/Pairing 9119 * @param addr 9120 * @param pin 9121 * @return 0 if ok 9122 */ 9123 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9124 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9125 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9126 } 9127 9128 /** 9129 * @brief Accept SSP Numeric Comparison 9130 * @param addr 9131 * @param passkey 9132 * @return 0 if ok 9133 */ 9134 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9135 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9136 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9137 } 9138 9139 /** 9140 * @brief Abort SSP Numeric Comparison/Pairing 9141 * @param addr 9142 * @param pin 9143 * @return 0 if ok 9144 */ 9145 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9146 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9147 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9148 } 9149 9150 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9151 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9152 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9153 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9154 connectionSetAuthenticationFlags(conn, flag); 9155 hci_run(); 9156 return ERROR_CODE_SUCCESS; 9157 } 9158 #endif 9159 9160 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9161 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9162 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9163 } 9164 9165 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9166 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9167 } 9168 #endif 9169 9170 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9171 /** 9172 * @brief Report Remote OOB Data 9173 * @param bd_addr 9174 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9175 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9176 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9177 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9178 */ 9179 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){ 9180 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9181 if (connection == NULL) { 9182 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9183 } 9184 connection->classic_oob_c_192 = c_192; 9185 connection->classic_oob_r_192 = r_192; 9186 9187 // ignore P-256 if not supported by us 9188 if (hci_stack->secure_connections_active){ 9189 connection->classic_oob_c_256 = c_256; 9190 connection->classic_oob_r_256 = r_256; 9191 } 9192 9193 return ERROR_CODE_SUCCESS; 9194 } 9195 /** 9196 * @brief Generate new OOB data 9197 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9198 */ 9199 void gap_ssp_generate_oob_data(void){ 9200 hci_stack->classic_read_local_oob_data = true; 9201 hci_run(); 9202 } 9203 9204 #endif 9205 9206 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9207 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9208 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9209 if (connection == NULL) { 9210 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9211 } 9212 9213 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9214 connection->link_key_type = type; 9215 9216 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9217 } 9218 9219 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9220 /** 9221 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9222 * @param inquiry_mode see bluetooth_defines.h 9223 */ 9224 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9225 hci_stack->inquiry_mode = inquiry_mode; 9226 } 9227 9228 /** 9229 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9230 */ 9231 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9232 hci_stack->sco_voice_setting = voice_setting; 9233 } 9234 9235 /** 9236 * @brief Get SCO Voice Setting 9237 * @return current voice setting 9238 */ 9239 uint16_t hci_get_sco_voice_setting(void){ 9240 return hci_stack->sco_voice_setting; 9241 } 9242 9243 static int hci_have_usb_transport(void){ 9244 if (!hci_stack->hci_transport) return 0; 9245 const char * transport_name = hci_stack->hci_transport->name; 9246 if (!transport_name) return 0; 9247 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9248 } 9249 9250 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9251 uint16_t sco_packet_length = 0; 9252 9253 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9254 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9255 int multiplier; 9256 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9257 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9258 multiplier = 2; 9259 } else { 9260 multiplier = 1; 9261 } 9262 #endif 9263 9264 #ifdef ENABLE_SCO_OVER_HCI 9265 if (hci_have_usb_transport()){ 9266 // see Core Spec for H2 USB Transfer. 9267 // 3 byte SCO header + 24 bytes per connection 9268 // @note multiple sco connections not supported currently 9269 sco_packet_length = 3 + 24 * multiplier; 9270 } else { 9271 // 3 byte SCO header + SCO packet length over the air 9272 sco_packet_length = 3 + payload_size * multiplier; 9273 // assert that it still fits inside an SCO buffer 9274 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9275 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9276 } 9277 } 9278 #endif 9279 #ifdef HAVE_SCO_TRANSPORT 9280 // 3 byte SCO header + SCO packet length over the air 9281 sco_packet_length = 3 + payload_size * multiplier; 9282 // assert that it still fits inside an SCO buffer 9283 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9284 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9285 } 9286 #endif 9287 return sco_packet_length; 9288 } 9289 9290 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9291 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9292 if (connection != NULL){ 9293 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9294 } 9295 return 0; 9296 } 9297 9298 uint16_t hci_get_sco_packet_length(void){ 9299 btstack_linked_list_iterator_t it; 9300 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9301 while (btstack_linked_list_iterator_has_next(&it)){ 9302 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9303 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9304 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9305 } 9306 } 9307 return 0; 9308 } 9309 9310 /** 9311 * @brief Sets the master/slave policy 9312 * @param policy (0: attempt to become master, 1: let connecting device decide) 9313 */ 9314 void hci_set_master_slave_policy(uint8_t policy){ 9315 hci_stack->master_slave_policy = policy; 9316 } 9317 9318 #endif 9319 9320 HCI_STATE hci_get_state(void){ 9321 return hci_stack->state; 9322 } 9323 9324 #ifdef ENABLE_CLASSIC 9325 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9326 hci_stack->gap_classic_accept_callback = accept_callback; 9327 } 9328 #endif 9329 9330 /** 9331 * @brief Set callback for Bluetooth Hardware Error 9332 */ 9333 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9334 hci_stack->hardware_error_callback = fn; 9335 } 9336 9337 void hci_disconnect_all(void){ 9338 btstack_linked_list_iterator_t it; 9339 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9340 while (btstack_linked_list_iterator_has_next(&it)){ 9341 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9342 if (con->state == SENT_DISCONNECT) continue; 9343 con->state = SEND_DISCONNECT; 9344 } 9345 hci_run(); 9346 } 9347 9348 uint16_t hci_get_manufacturer(void){ 9349 return hci_stack->manufacturer; 9350 } 9351 9352 #ifdef ENABLE_BLE 9353 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9354 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9355 if (!hci_con) return NULL; 9356 return &hci_con->sm_connection; 9357 } 9358 9359 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9360 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9361 #endif 9362 9363 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9364 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9365 if (hci_connection == NULL) return 0; 9366 if (hci_is_le_connection(hci_connection)){ 9367 #ifdef ENABLE_BLE 9368 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9369 if (sm_conn->sm_connection_encrypted) { 9370 return sm_conn->sm_actual_encryption_key_size; 9371 } 9372 #endif 9373 } else { 9374 #ifdef ENABLE_CLASSIC 9375 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9376 return hci_connection->encryption_key_size; 9377 } 9378 #endif 9379 } 9380 return 0; 9381 } 9382 9383 bool gap_authenticated(hci_con_handle_t con_handle){ 9384 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9385 if (hci_connection == NULL) return false; 9386 9387 switch (hci_connection->address_type){ 9388 #ifdef ENABLE_BLE 9389 case BD_ADDR_TYPE_LE_PUBLIC: 9390 case BD_ADDR_TYPE_LE_RANDOM: 9391 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9392 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9393 #endif 9394 #ifdef ENABLE_CLASSIC 9395 case BD_ADDR_TYPE_SCO: 9396 case BD_ADDR_TYPE_ACL: 9397 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9398 #endif 9399 default: 9400 return false; 9401 } 9402 } 9403 9404 bool gap_secure_connection(hci_con_handle_t con_handle){ 9405 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9406 if (hci_connection == NULL) return 0; 9407 9408 switch (hci_connection->address_type){ 9409 #ifdef ENABLE_BLE 9410 case BD_ADDR_TYPE_LE_PUBLIC: 9411 case BD_ADDR_TYPE_LE_RANDOM: 9412 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9413 return hci_connection->sm_connection.sm_connection_sc != 0; 9414 #endif 9415 #ifdef ENABLE_CLASSIC 9416 case BD_ADDR_TYPE_SCO: 9417 case BD_ADDR_TYPE_ACL: 9418 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9419 #endif 9420 default: 9421 return false; 9422 } 9423 } 9424 9425 bool gap_bonded(hci_con_handle_t con_handle){ 9426 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9427 if (hci_connection == NULL) return 0; 9428 9429 #ifdef ENABLE_CLASSIC 9430 link_key_t link_key; 9431 link_key_type_t link_key_type; 9432 #endif 9433 switch (hci_connection->address_type){ 9434 #ifdef ENABLE_BLE 9435 case BD_ADDR_TYPE_LE_PUBLIC: 9436 case BD_ADDR_TYPE_LE_RANDOM: 9437 return hci_connection->sm_connection.sm_le_db_index >= 0; 9438 #endif 9439 #ifdef ENABLE_CLASSIC 9440 case BD_ADDR_TYPE_SCO: 9441 case BD_ADDR_TYPE_ACL: 9442 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9443 #endif 9444 default: 9445 return false; 9446 } 9447 } 9448 9449 #ifdef ENABLE_BLE 9450 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9451 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9452 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9453 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9454 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9455 return sm_conn->sm_connection_authorization_state; 9456 } 9457 #endif 9458 9459 #ifdef ENABLE_CLASSIC 9460 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){ 9461 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9462 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9463 conn->sniff_min_interval = sniff_min_interval; 9464 conn->sniff_max_interval = sniff_max_interval; 9465 conn->sniff_attempt = sniff_attempt; 9466 conn->sniff_timeout = sniff_timeout; 9467 hci_run(); 9468 return 0; 9469 } 9470 9471 /** 9472 * @brief Exit Sniff mode 9473 * @param con_handle 9474 @ @return 0 if ok 9475 */ 9476 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9477 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9478 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9479 conn->sniff_min_interval = 0xffff; 9480 hci_run(); 9481 return 0; 9482 } 9483 9484 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){ 9485 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9486 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9487 conn->sniff_subrating_max_latency = max_latency; 9488 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9489 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9490 hci_run(); 9491 return ERROR_CODE_SUCCESS; 9492 } 9493 9494 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){ 9495 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9496 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9497 conn->qos_service_type = service_type; 9498 conn->qos_token_rate = token_rate; 9499 conn->qos_peak_bandwidth = peak_bandwidth; 9500 conn->qos_latency = latency; 9501 conn->qos_delay_variation = delay_variation; 9502 hci_run(); 9503 return ERROR_CODE_SUCCESS; 9504 } 9505 9506 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9507 hci_stack->new_page_scan_interval = page_scan_interval; 9508 hci_stack->new_page_scan_window = page_scan_window; 9509 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9510 hci_run(); 9511 } 9512 9513 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9514 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9515 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9516 hci_run(); 9517 } 9518 9519 void gap_set_page_timeout(uint16_t page_timeout){ 9520 hci_stack->page_timeout = page_timeout; 9521 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9522 hci_run(); 9523 } 9524 9525 #endif 9526 9527 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9528 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9529 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9530 if (le_device_db_index >= le_device_db_max_count()) return; 9531 uint8_t offset = le_device_db_index >> 3; 9532 uint8_t mask = 1 << (le_device_db_index & 7); 9533 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9534 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9535 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9536 // note: go back to remove entries, otherwise, a remove + add will skip the add 9537 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9538 } 9539 } 9540 9541 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9542 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9543 if (le_device_db_index >= le_device_db_max_count()) return; 9544 uint8_t offset = le_device_db_index >> 3; 9545 uint8_t mask = 1 << (le_device_db_index & 7); 9546 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9547 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9548 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9549 } 9550 } 9551 9552 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9553 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9554 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9555 } 9556 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9557 // restart le resolving list update 9558 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9559 } 9560 return ERROR_CODE_SUCCESS; 9561 } 9562 9563 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9564 hci_stack->le_privacy_mode = privacy_mode; 9565 } 9566 #endif 9567 9568 #ifdef ENABLE_BLE 9569 #ifdef ENABLE_LE_CENTRAL 9570 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9571 9572 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9573 // check if already in list 9574 btstack_linked_list_iterator_t it; 9575 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9576 while (btstack_linked_list_iterator_has_next(&it)) { 9577 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9578 if (entry->sid != advertising_sid) { 9579 continue; 9580 } 9581 if (entry->address_type != address_type) { 9582 continue; 9583 } 9584 if (memcmp(entry->address, address, 6) != 0) { 9585 continue; 9586 } 9587 // disallow if already scheduled to add 9588 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9589 return ERROR_CODE_COMMAND_DISALLOWED; 9590 } 9591 // still on controller, but scheduled to remove -> re-add 9592 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9593 return ERROR_CODE_SUCCESS; 9594 } 9595 // alloc and add to list 9596 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9597 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9598 entry->sid = advertising_sid; 9599 entry->address_type = address_type; 9600 (void)memcpy(entry->address, address, 6); 9601 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9602 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9603 return ERROR_CODE_SUCCESS; 9604 } 9605 9606 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9607 btstack_linked_list_iterator_t it; 9608 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9609 while (btstack_linked_list_iterator_has_next(&it)){ 9610 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9611 if (entry->sid != advertising_sid) { 9612 continue; 9613 } 9614 if (entry->address_type != address_type) { 9615 continue; 9616 } 9617 if (memcmp(entry->address, address, 6) != 0) { 9618 continue; 9619 } 9620 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9621 // remove from controller if already present 9622 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9623 } else { 9624 // directly remove entry from whitelist 9625 btstack_linked_list_iterator_remove(&it); 9626 btstack_memory_periodic_advertiser_list_entry_free(entry); 9627 } 9628 return ERROR_CODE_SUCCESS; 9629 } 9630 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9631 } 9632 9633 static void hci_periodic_advertiser_list_clear(void){ 9634 btstack_linked_list_iterator_t it; 9635 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9636 while (btstack_linked_list_iterator_has_next(&it)){ 9637 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9638 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9639 // remove from controller if already present 9640 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9641 continue; 9642 } 9643 // directly remove entry from whitelist 9644 btstack_linked_list_iterator_remove(&it); 9645 btstack_memory_periodic_advertiser_list_entry_free(entry); 9646 } 9647 } 9648 9649 uint8_t gap_periodic_advertiser_list_clear(void){ 9650 hci_periodic_advertiser_list_clear(); 9651 hci_run(); 9652 return ERROR_CODE_SUCCESS; 9653 } 9654 9655 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9656 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9657 if (status){ 9658 return status; 9659 } 9660 hci_run(); 9661 return ERROR_CODE_SUCCESS; 9662 } 9663 9664 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9665 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9666 if (status){ 9667 return status; 9668 } 9669 hci_run(); 9670 return ERROR_CODE_SUCCESS; 9671 } 9672 9673 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9674 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9675 // abort if already active 9676 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9677 return ERROR_CODE_COMMAND_DISALLOWED; 9678 } 9679 // store request 9680 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9681 hci_stack->le_periodic_sync_options = options; 9682 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9683 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9684 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9685 hci_stack->le_periodic_sync_skip = skip; 9686 hci_stack->le_periodic_sync_timeout = sync_timeout; 9687 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9688 9689 hci_run(); 9690 return ERROR_CODE_SUCCESS; 9691 } 9692 9693 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9694 // abort if not requested 9695 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9696 return ERROR_CODE_COMMAND_DISALLOWED; 9697 } 9698 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9699 hci_run(); 9700 return ERROR_CODE_SUCCESS; 9701 } 9702 9703 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9704 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9705 return ERROR_CODE_COMMAND_DISALLOWED; 9706 } 9707 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9708 hci_run(); 9709 return ERROR_CODE_SUCCESS; 9710 } 9711 9712 #endif 9713 #endif 9714 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9715 static hci_iso_stream_t * 9716 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9717 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9718 if (iso_stream != NULL){ 9719 iso_stream->iso_type = iso_type; 9720 iso_stream->state = state; 9721 iso_stream->group_id = group_id; 9722 iso_stream->stream_id = stream_id; 9723 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9724 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9725 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9726 } 9727 return iso_stream; 9728 } 9729 9730 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9731 btstack_linked_list_iterator_t it; 9732 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9733 while (btstack_linked_list_iterator_has_next(&it)){ 9734 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9735 if (iso_stream->cis_handle == con_handle ) { 9736 return iso_stream; 9737 } 9738 } 9739 return NULL; 9740 } 9741 9742 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9743 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9744 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9745 btstack_memory_hci_iso_stream_free(iso_stream); 9746 } 9747 9748 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9749 btstack_linked_list_iterator_t it; 9750 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9751 while (btstack_linked_list_iterator_has_next(&it)){ 9752 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9753 if ((iso_stream->group_id == group_id) && 9754 (iso_stream->iso_type == iso_type)){ 9755 btstack_linked_list_iterator_remove(&it); 9756 btstack_memory_hci_iso_stream_free(iso_stream); 9757 } 9758 } 9759 } 9760 9761 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9762 btstack_linked_list_iterator_t it; 9763 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9764 while (btstack_linked_list_iterator_has_next(&it)){ 9765 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9766 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9767 (iso_stream->group_id == group_id)){ 9768 btstack_linked_list_iterator_remove(&it); 9769 btstack_memory_hci_iso_stream_free(iso_stream); 9770 } 9771 } 9772 } 9773 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9774 btstack_linked_list_iterator_t it; 9775 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9776 while (btstack_linked_list_iterator_has_next(&it)){ 9777 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9778 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9779 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9780 } 9781 } 9782 } 9783 9784 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9785 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9786 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9787 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9788 return (sdu_len_offset + 2 + sdu_len) == size; 9789 } 9790 9791 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9792 if (hci_stack->iso_packet_handler == NULL) { 9793 return; 9794 } 9795 if (size < 4) { 9796 return; 9797 } 9798 9799 // parse header 9800 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9801 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9802 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9803 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9804 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9805 9806 // assert packet is complete 9807 if ((iso_data_len + 4u) != size){ 9808 return; 9809 } 9810 9811 if ((pb_flag & 0x01) == 0){ 9812 if (pb_flag == 0x02){ 9813 // The ISO_Data_Load field contains a header and a complete SDU. 9814 if (hci_iso_sdu_complete(packet, size)) { 9815 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9816 } 9817 } else { 9818 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9819 if (iso_stream == NULL){ 9820 return; 9821 } 9822 if (size > HCI_ISO_PAYLOAD_SIZE){ 9823 return; 9824 } 9825 memcpy(iso_stream->reassembly_buffer, packet, size); 9826 // fix pb_flag 9827 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9828 iso_stream->reassembly_pos = size; 9829 } 9830 } else { 9831 // iso_data_load contains continuation or last fragment of an SDU 9832 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9833 if (ts_flag != 0){ 9834 return; 9835 } 9836 // append fragment 9837 if (iso_stream == NULL){ 9838 return; 9839 } 9840 if (iso_stream->reassembly_pos == 0){ 9841 return; 9842 } 9843 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9844 // reset reassembly buffer 9845 iso_stream->reassembly_pos = 0; 9846 return; 9847 } 9848 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9849 iso_stream->reassembly_pos += iso_data_len; 9850 9851 // deliver if last fragment and SDU complete 9852 if (pb_flag == 0x03){ 9853 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9854 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9855 } 9856 iso_stream->reassembly_pos = 0; 9857 } 9858 } 9859 } 9860 9861 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9862 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9863 uint16_t pos = 0; 9864 event[pos++] = HCI_EVENT_META_GAP; 9865 event[pos++] = 4 + (2 * big->num_bis); 9866 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9867 event[pos++] = status; 9868 event[pos++] = big->big_handle; 9869 event[pos++] = big->num_bis; 9870 uint8_t i; 9871 for (i=0;i<big->num_bis;i++){ 9872 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9873 pos += 2; 9874 } 9875 hci_emit_event(event, pos, 0); 9876 } 9877 9878 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9879 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9880 uint16_t pos = 0; 9881 event[pos++] = HCI_EVENT_META_GAP; 9882 event[pos++] = 4 + (2 * cig->num_cis); 9883 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9884 event[pos++] = status; 9885 event[pos++] = cig->cig_id; 9886 event[pos++] = cig->num_cis; 9887 uint8_t i; 9888 for (i=0;i<cig->num_cis;i++){ 9889 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9890 pos += 2; 9891 } 9892 hci_emit_event(event, pos, 0); 9893 } 9894 9895 static void hci_emit_cis_created(uint8_t status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 9896 hci_con_handle_t acl_con_handle) { 9897 uint8_t event [10]; 9898 uint16_t pos = 0; 9899 event[pos++] = HCI_EVENT_META_GAP; 9900 event[pos++] = 8; 9901 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9902 event[pos++] = status; 9903 event[pos++] = cig_id; 9904 event[pos++] = cis_id; 9905 little_endian_store_16(event, pos, cis_con_handle); 9906 pos += 2; 9907 little_endian_store_16(event, pos, acl_con_handle); 9908 pos += 2; 9909 hci_emit_event(event, pos, 0); 9910 } 9911 9912 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 9913 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 9914 // cache data before finalizing struct 9915 uint8_t cig_id = iso_stream->group_id; 9916 uint8_t cis_id = iso_stream->stream_id; 9917 hci_con_handle_t cis_handle = iso_stream->cis_handle; 9918 hci_con_handle_t acl_handle = iso_stream->acl_handle; 9919 if (status != ERROR_CODE_SUCCESS){ 9920 hci_iso_stream_finalize(iso_stream); 9921 } 9922 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 9923 } 9924 9925 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9926 uint8_t event [4]; 9927 uint16_t pos = 0; 9928 event[pos++] = HCI_EVENT_META_GAP; 9929 event[pos++] = 2; 9930 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9931 event[pos++] = big->big_handle; 9932 hci_emit_event(event, pos, 0); 9933 } 9934 9935 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9936 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9937 uint16_t pos = 0; 9938 event[pos++] = HCI_EVENT_META_GAP; 9939 event[pos++] = 4; 9940 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9941 event[pos++] = status; 9942 event[pos++] = big_sync->big_handle; 9943 event[pos++] = big_sync->num_bis; 9944 uint8_t i; 9945 for (i=0;i<big_sync->num_bis;i++){ 9946 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9947 pos += 2; 9948 } 9949 hci_emit_event(event, pos, 0); 9950 } 9951 9952 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9953 uint8_t event [4]; 9954 uint16_t pos = 0; 9955 event[pos++] = HCI_EVENT_META_GAP; 9956 event[pos++] = 2; 9957 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9958 event[pos++] = big_handle; 9959 hci_emit_event(event, pos, 0); 9960 } 9961 9962 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9963 uint8_t event[6]; 9964 uint16_t pos = 0; 9965 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9966 event[pos++] = sizeof(event) - 2; 9967 event[pos++] = big->big_handle; 9968 event[pos++] = bis_index; 9969 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9970 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9971 } 9972 9973 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9974 uint8_t event[4]; 9975 uint16_t pos = 0; 9976 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9977 event[pos++] = sizeof(event) - 2; 9978 little_endian_store_16(event, pos, cis_con_handle); 9979 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9980 } 9981 9982 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9983 btstack_linked_list_iterator_t it; 9984 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9985 while (btstack_linked_list_iterator_has_next(&it)){ 9986 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9987 if ( big->big_handle == big_handle ) { 9988 return big; 9989 } 9990 } 9991 return NULL; 9992 } 9993 9994 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9995 btstack_linked_list_iterator_t it; 9996 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9997 while (btstack_linked_list_iterator_has_next(&it)){ 9998 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9999 if ( big_sync->big_handle == big_handle ) { 10000 return big_sync; 10001 } 10002 } 10003 return NULL; 10004 } 10005 10006 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10007 hci_stack->iso_packets_to_queue = num_packets; 10008 } 10009 10010 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10011 btstack_linked_list_iterator_t it; 10012 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10013 while (btstack_linked_list_iterator_has_next(&it)){ 10014 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10015 if ( cig->cig_id == cig_id ) { 10016 return cig; 10017 } 10018 } 10019 return NULL; 10020 } 10021 10022 static void hci_iso_notify_can_send_now(void){ 10023 10024 // BIG 10025 10026 btstack_linked_list_iterator_t it; 10027 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10028 while (btstack_linked_list_iterator_has_next(&it)){ 10029 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10030 // track number completed packet timestamps 10031 if (big->num_completed_timestamp_current_valid){ 10032 big->num_completed_timestamp_current_valid = false; 10033 if (big->num_completed_timestamp_previous_valid){ 10034 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10035 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10036 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10037 big->num_completed_timestamp_previous_ms); 10038 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10039 // to catch up, skip packet on all BIS 10040 uint8_t i; 10041 for (i=0;i<big->num_bis;i++){ 10042 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10043 if (iso_stream){ 10044 iso_stream->num_packets_to_skip++; 10045 } 10046 } 10047 } 10048 } 10049 big->num_completed_timestamp_previous_valid = true; 10050 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10051 } 10052 10053 if (big->can_send_now_requested){ 10054 // check if no outgoing iso packets pending and no can send now have to be emitted 10055 uint8_t i; 10056 bool can_send = true; 10057 uint8_t num_iso_queued_minimum = 0; 10058 for (i=0;i<big->num_bis;i++){ 10059 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10060 if (iso_stream == NULL) continue; 10061 // handle case where individual ISO packet was sent too late: 10062 // for each additionally queued packet, a new one needs to get skipped 10063 if (i==0){ 10064 num_iso_queued_minimum = iso_stream->num_packets_sent; 10065 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10066 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10067 iso_stream->num_packets_to_skip += num_packets_to_skip; 10068 iso_stream->num_packets_sent -= num_packets_to_skip; 10069 } 10070 // check if we can send now 10071 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10072 can_send = false; 10073 break; 10074 } 10075 } 10076 if (can_send){ 10077 // propagate can send now to individual streams 10078 big->can_send_now_requested = false; 10079 for (i=0;i<big->num_bis;i++){ 10080 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10081 iso_stream->emit_ready_to_send = true; 10082 } 10083 } 10084 } 10085 } 10086 10087 if (hci_stack->hci_packet_buffer_reserved) return; 10088 10089 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10090 while (btstack_linked_list_iterator_has_next(&it)){ 10091 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10092 // report bis ready 10093 uint8_t i; 10094 for (i=0;i<big->num_bis;i++){ 10095 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10096 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10097 iso_stream->emit_ready_to_send = false; 10098 hci_emit_bis_can_send_now(big, i); 10099 break; 10100 } 10101 } 10102 } 10103 10104 // CIS 10105 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10106 while (btstack_linked_list_iterator_has_next(&it)) { 10107 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10108 if ((iso_stream->can_send_now_requested) && 10109 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10110 iso_stream->can_send_now_requested = false; 10111 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10112 } 10113 } 10114 } 10115 10116 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10117 if (hci_big_for_handle(big_params->big_handle) != NULL){ 10118 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10119 } 10120 if (big_params->num_bis == 0){ 10121 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10122 } 10123 if (big_params->num_bis > MAX_NR_BIS){ 10124 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10125 } 10126 10127 // reserve ISO Streams 10128 uint8_t i; 10129 uint8_t status = ERROR_CODE_SUCCESS; 10130 for (i=0;i<big_params->num_bis;i++){ 10131 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 10132 if (iso_stream == NULL) { 10133 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10134 break; 10135 } 10136 } 10137 10138 // free structs on error 10139 if (status != ERROR_CODE_SUCCESS){ 10140 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 10141 return status; 10142 } 10143 10144 le_audio_big_t * big = storage; 10145 big->big_handle = big_params->big_handle; 10146 big->params = big_params; 10147 big->state = LE_AUDIO_BIG_STATE_CREATE; 10148 big->num_bis = big_params->num_bis; 10149 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10150 10151 hci_run(); 10152 10153 return ERROR_CODE_SUCCESS; 10154 } 10155 10156 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10157 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 10158 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10159 } 10160 if (big_sync_params->num_bis == 0){ 10161 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10162 } 10163 if (big_sync_params->num_bis > MAX_NR_BIS){ 10164 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10165 } 10166 10167 le_audio_big_sync_t * big_sync = storage; 10168 big_sync->big_handle = big_sync_params->big_handle; 10169 big_sync->params = big_sync_params; 10170 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10171 big_sync->num_bis = big_sync_params->num_bis; 10172 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10173 10174 hci_run(); 10175 10176 return ERROR_CODE_SUCCESS; 10177 } 10178 10179 uint8_t gap_big_terminate(uint8_t big_handle){ 10180 le_audio_big_t * big = hci_big_for_handle(big_handle); 10181 if (big == NULL){ 10182 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10183 } 10184 switch (big->state){ 10185 case LE_AUDIO_BIG_STATE_CREATE: 10186 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10187 hci_emit_big_terminated(big); 10188 break; 10189 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10190 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10191 break; 10192 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10193 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10194 case LE_AUDIO_BIG_STATE_ACTIVE: 10195 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10196 hci_run(); 10197 break; 10198 default: 10199 return ERROR_CODE_COMMAND_DISALLOWED; 10200 } 10201 return ERROR_CODE_SUCCESS; 10202 } 10203 10204 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10205 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10206 if (big_sync == NULL){ 10207 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10208 } 10209 switch (big_sync->state){ 10210 case LE_AUDIO_BIG_STATE_CREATE: 10211 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10212 hci_emit_big_sync_stopped(big_handle); 10213 break; 10214 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10215 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10216 break; 10217 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10218 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10219 case LE_AUDIO_BIG_STATE_ACTIVE: 10220 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10221 hci_run(); 10222 break; 10223 default: 10224 return ERROR_CODE_COMMAND_DISALLOWED; 10225 } 10226 return ERROR_CODE_SUCCESS; 10227 } 10228 10229 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10230 le_audio_big_t * big = hci_big_for_handle(big_handle); 10231 if (big == NULL){ 10232 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10233 } 10234 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10235 return ERROR_CODE_COMMAND_DISALLOWED; 10236 } 10237 big->can_send_now_requested = true; 10238 hci_iso_notify_can_send_now(); 10239 return ERROR_CODE_SUCCESS; 10240 } 10241 10242 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10243 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10244 if (iso_stream == NULL){ 10245 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10246 } 10247 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10248 return ERROR_CODE_COMMAND_DISALLOWED; 10249 } 10250 iso_stream->can_send_now_requested = true; 10251 hci_iso_notify_can_send_now(); 10252 return ERROR_CODE_SUCCESS; 10253 } 10254 10255 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10256 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10257 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10258 } 10259 if (cig_params->num_cis == 0){ 10260 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10261 } 10262 if (cig_params->num_cis > MAX_NR_BIS){ 10263 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10264 } 10265 10266 // reserve ISO Streams 10267 uint8_t i; 10268 uint8_t status = ERROR_CODE_SUCCESS; 10269 for (i=0;i<cig_params->num_cis;i++){ 10270 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10271 if (iso_stream == NULL) { 10272 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10273 break; 10274 } 10275 } 10276 10277 // free structs on error 10278 if (status != ERROR_CODE_SUCCESS){ 10279 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10280 return status; 10281 } 10282 10283 le_audio_cig_t * cig = storage; 10284 cig->cig_id = cig_params->cig_id; 10285 cig->num_cis = cig_params->num_cis; 10286 cig->params = cig_params; 10287 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10288 for (i=0;i<cig->num_cis;i++){ 10289 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10290 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10291 cig->cis_setup_active[i] = false; 10292 cig->cis_established[i] = false; 10293 } 10294 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10295 10296 hci_run(); 10297 10298 return ERROR_CODE_SUCCESS; 10299 } 10300 10301 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10302 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10303 if (cig == NULL){ 10304 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10305 } 10306 10307 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10308 return ERROR_CODE_COMMAND_DISALLOWED; 10309 } 10310 10311 // store ACL Connection Handles 10312 uint8_t i; 10313 for (i=0;i<cig->num_cis;i++){ 10314 // check that all con handles exist and store 10315 hci_con_handle_t cis_handle = cis_con_handles[i]; 10316 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10317 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10318 } 10319 uint8_t j; 10320 bool found = false; 10321 for (j=0;j<cig->num_cis;j++){ 10322 if (cig->cis_con_handles[j] == cis_handle){ 10323 cig->acl_con_handles[j] = acl_con_handles[j]; 10324 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10325 btstack_assert(iso_stream != NULL); 10326 iso_stream->acl_handle = acl_con_handles[j]; 10327 found = true; 10328 break; 10329 } 10330 } 10331 if (!found){ 10332 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10333 } 10334 } 10335 10336 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10337 hci_run(); 10338 10339 return ERROR_CODE_SUCCESS; 10340 } 10341 10342 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10343 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10344 if (iso_stream == NULL){ 10345 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10346 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10347 } 10348 10349 // set next state and continue 10350 iso_stream->state = state; 10351 hci_run(); 10352 return ERROR_CODE_SUCCESS; 10353 } 10354 10355 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10356 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10357 } 10358 10359 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10360 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10361 } 10362 10363 10364 #endif 10365 #endif /* ENABLE_BLE */ 10366 10367 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10368 void hci_setup_test_connections_fuzz(void){ 10369 hci_connection_t * conn; 10370 10371 // default address: 66:55:44:33:00:01 10372 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10373 10374 // setup Controller info 10375 hci_stack->num_cmd_packets = 255; 10376 hci_stack->acl_packets_total_num = 255; 10377 10378 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10379 addr[5] = 0x01; 10380 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10381 conn->con_handle = addr[5]; 10382 conn->state = RECEIVED_CONNECTION_REQUEST; 10383 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10384 10385 // setup incoming Classic SCO connection with con handle 0x0002 10386 addr[5] = 0x02; 10387 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10388 conn->con_handle = addr[5]; 10389 conn->state = RECEIVED_CONNECTION_REQUEST; 10390 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10391 10392 // setup ready Classic ACL connection with con handle 0x0003 10393 addr[5] = 0x03; 10394 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10395 conn->con_handle = addr[5]; 10396 conn->state = OPEN; 10397 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10398 10399 // setup ready Classic SCO connection with con handle 0x0004 10400 addr[5] = 0x04; 10401 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10402 conn->con_handle = addr[5]; 10403 conn->state = OPEN; 10404 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10405 10406 // setup ready LE ACL connection with con handle 0x005 and public address 10407 addr[5] = 0x05; 10408 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10409 conn->con_handle = addr[5]; 10410 conn->state = OPEN; 10411 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10412 conn->sm_connection.sm_connection_encrypted = 1; 10413 } 10414 10415 void hci_free_connections_fuzz(void){ 10416 btstack_linked_list_iterator_t it; 10417 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10418 while (btstack_linked_list_iterator_has_next(&it)){ 10419 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10420 btstack_linked_list_iterator_remove(&it); 10421 btstack_memory_hci_connection_free(con); 10422 } 10423 } 10424 void hci_simulate_working_fuzz(void){ 10425 hci_stack->le_scanning_param_update = false; 10426 hci_init_done(); 10427 hci_stack->num_cmd_packets = 255; 10428 } 10429 #endif 10430