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_LE_READ_REMOTE_FEATURES , 27, 5) \ 171 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 172 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 173 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 174 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 175 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 176 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 178 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 179 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 180 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 181 182 // enumerate supported commands 183 #define X(name, offset, bit) name, 184 enum { 185 SUPPORTED_HCI_COMMANDS 186 SUPPORTED_HCI_COMMANDS_COUNT 187 }; 188 #undef X 189 190 // prototypes 191 #ifdef ENABLE_CLASSIC 192 static void hci_update_scan_enable(void); 193 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 194 static int hci_local_ssp_activated(void); 195 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 196 static bool hci_ssp_supported(hci_connection_t * connection); 197 static void hci_notify_if_sco_can_send_now(void); 198 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 199 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 200 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 201 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 202 static void hci_connection_timestamp(hci_connection_t *connection); 203 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 204 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 205 #endif 206 207 static int hci_power_control_on(void); 208 static void hci_power_control_off(void); 209 static void hci_state_reset(void); 210 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 211 static void hci_emit_transport_packet_sent(void); 212 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 213 static void hci_emit_nr_connections_changed(void); 214 static void hci_emit_hci_open_failed(void); 215 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 216 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 217 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 218 static void hci_run(void); 219 static bool hci_is_le_connection(hci_connection_t * connection); 220 static uint8_t hci_send_prepared_cmd_packet(void); 221 222 #ifdef ENABLE_CLASSIC 223 static int hci_have_usb_transport(void); 224 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 225 #endif 226 227 #ifdef ENABLE_BLE 228 static bool hci_run_general_gap_le(void); 229 static void gap_privacy_clients_handle_ready(void); 230 static void gap_privacy_clients_notify(bd_addr_t new_random_address); 231 #ifdef ENABLE_LE_CENTRAL 232 // called from test/ble_client/advertising_data_parser.c 233 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 234 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 235 static hci_connection_t * gap_get_outgoing_le_connection(void); 236 static void hci_le_scan_stop(void); 237 #endif 238 #ifdef ENABLE_LE_PERIPHERAL 239 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 240 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 241 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len); 242 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size); 243 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 244 #endif /* ENABLE_LE_PERIPHERAL */ 245 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 246 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); 247 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 248 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 249 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 250 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 251 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 252 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 253 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 254 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 255 static void hci_iso_notify_can_send_now(void); 256 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 257 static void hci_emit_big_terminated(const le_audio_big_t * big); 258 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 259 static void hci_emit_big_sync_stopped(uint8_t big_handle); 260 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 261 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 262 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 263 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 264 #endif /* ENABLE_BLE */ 265 266 // the STACK is here 267 #ifndef HAVE_MALLOC 268 static hci_stack_t hci_stack_static; 269 #endif 270 static hci_stack_t * hci_stack = NULL; 271 272 #ifdef ENABLE_CLASSIC 273 // default name 274 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 275 276 // test helper 277 static uint8_t disable_l2cap_timeouts = 0; 278 #endif 279 280 // reset connection state on create and on reconnect 281 // don't overwrite addr, con handle, role 282 static void hci_connection_init(hci_connection_t * conn){ 283 conn->authentication_flags = AUTH_FLAG_NONE; 284 conn->bonding_flags = 0; 285 conn->requested_security_level = LEVEL_0; 286 conn->link_key_type = INVALID_LINK_KEY; 287 #ifdef ENABLE_CLASSIC 288 conn->request_role = HCI_ROLE_INVALID; 289 conn->sniff_subrating_max_latency = 0xffff; 290 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 291 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 292 btstack_run_loop_set_timer_context(&conn->timeout, conn); 293 hci_connection_timestamp(conn); 294 #endif 295 conn->acl_recombination_length = 0; 296 conn->acl_recombination_pos = 0; 297 conn->num_packets_sent = 0; 298 299 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 300 #ifdef ENABLE_BLE 301 conn->le_phy_update_all_phys = 0xff; 302 #endif 303 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 304 conn->le_max_tx_octets = 27; 305 #endif 306 #ifdef ENABLE_CLASSIC_PAIRING_OOB 307 conn->classic_oob_c_192 = NULL; 308 conn->classic_oob_r_192 = NULL; 309 conn->classic_oob_c_256 = NULL; 310 conn->classic_oob_r_256 = NULL; 311 #endif 312 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 313 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 314 conn->le_past_advertising_handle = 0xff; 315 #endif 316 } 317 318 /** 319 * create connection for given address 320 * 321 * @return connection OR NULL, if no memory left 322 */ 323 static hci_connection_t * 324 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 325 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 326 327 hci_connection_t * conn = btstack_memory_hci_connection_get(); 328 if (!conn) return NULL; 329 hci_connection_init(conn); 330 331 bd_addr_copy(conn->address, addr); 332 conn->address_type = addr_type; 333 conn->con_handle = HCI_CON_HANDLE_INVALID; 334 conn->role = role; 335 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 336 337 return conn; 338 } 339 340 341 /** 342 * get le connection parameter range 343 * 344 * @return le connection parameter range struct 345 */ 346 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 347 *range = hci_stack->le_connection_parameter_range; 348 } 349 350 /** 351 * set le connection parameter range 352 * 353 */ 354 355 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 356 hci_stack->le_connection_parameter_range = *range; 357 } 358 359 /** 360 * @brief Test if connection parameters are inside in existing rage 361 * @param conn_interval_min (unit: 1.25ms) 362 * @param conn_interval_max (unit: 1.25ms) 363 * @param conn_latency 364 * @param supervision_timeout (unit: 10ms) 365 * @return 1 if included 366 */ 367 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){ 368 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 369 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 370 371 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 372 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 373 374 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 375 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 376 377 return 1; 378 } 379 380 /** 381 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 382 * @note: default: 1 383 * @param max_peripheral_connections 384 */ 385 #ifdef ENABLE_LE_PERIPHERAL 386 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 387 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 388 } 389 #endif 390 391 /** 392 * get hci connections iterator 393 * 394 * @return hci connections iterator 395 */ 396 397 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 398 btstack_linked_list_iterator_init(it, &hci_stack->connections); 399 } 400 401 /** 402 * get connection for a given handle 403 * 404 * @return connection OR NULL, if not found 405 */ 406 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 407 btstack_linked_list_iterator_t it; 408 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 409 while (btstack_linked_list_iterator_has_next(&it)){ 410 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 411 if ( item->con_handle == con_handle ) { 412 return item; 413 } 414 } 415 return NULL; 416 } 417 418 /** 419 * get connection for given address 420 * 421 * @return connection OR NULL, if not found 422 */ 423 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 424 btstack_linked_list_iterator_t it; 425 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 426 while (btstack_linked_list_iterator_has_next(&it)){ 427 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 428 if (connection->address_type != addr_type) continue; 429 if (memcmp(addr, connection->address, 6) != 0) continue; 430 return connection; 431 } 432 return NULL; 433 } 434 435 #ifdef ENABLE_CLASSIC 436 437 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 438 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 439 } 440 441 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 442 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 443 } 444 445 #ifdef ENABLE_SCO_OVER_HCI 446 static int hci_number_sco_connections(void){ 447 int connections = 0; 448 btstack_linked_list_iterator_t it; 449 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 450 while (btstack_linked_list_iterator_has_next(&it)){ 451 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 452 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 453 connections++; 454 } 455 return connections; 456 } 457 #endif 458 459 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 460 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 461 #ifdef HAVE_EMBEDDED_TICK 462 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 463 // connections might be timed out 464 hci_emit_l2cap_check_timeout(connection); 465 } 466 #else 467 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 468 // connections might be timed out 469 hci_emit_l2cap_check_timeout(connection); 470 } 471 #endif 472 } 473 474 static void hci_connection_timestamp(hci_connection_t *connection){ 475 #ifdef HAVE_EMBEDDED_TICK 476 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 477 #else 478 connection->timestamp = btstack_run_loop_get_time_ms(); 479 #endif 480 } 481 482 /** 483 * add authentication flags and reset timer 484 * @note: assumes classic connection 485 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 486 */ 487 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 488 bd_addr_t addr; 489 reverse_bd_addr(bd_addr, addr); 490 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 491 if (conn) { 492 connectionSetAuthenticationFlags(conn, flags); 493 hci_connection_timestamp(conn); 494 } 495 } 496 497 static bool hci_pairing_active(hci_connection_t * hci_connection){ 498 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 499 } 500 501 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 502 if (hci_pairing_active(hci_connection)) return; 503 if (ssp){ 504 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 505 } else { 506 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 507 } 508 // if we are initiator, we have sent an HCI Authenticate Request 509 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 510 511 // if we are responder, use minimal service security level as required level 512 if (!initiator){ 513 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); 514 } 515 516 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 517 518 uint8_t event[12]; 519 event[0] = GAP_EVENT_PAIRING_STARTED; 520 event[1] = 10; 521 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 522 reverse_bd_addr(hci_connection->address, &event[4]); 523 event[10] = (uint8_t) ssp; 524 event[11] = (uint8_t) initiator; 525 hci_emit_event(event, sizeof(event), 1); 526 } 527 528 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 529 hci_connection->requested_security_level = LEVEL_0; 530 if (!hci_pairing_active(hci_connection)) return; 531 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 532 #ifdef ENABLE_CLASSIC_PAIRING_OOB 533 hci_connection->classic_oob_c_192 = NULL; 534 hci_connection->classic_oob_r_192 = NULL; 535 hci_connection->classic_oob_c_256 = NULL; 536 hci_connection->classic_oob_r_256 = NULL; 537 #endif 538 log_info("pairing complete, status %02x", status); 539 540 uint8_t event[11]; 541 event[0] = GAP_EVENT_PAIRING_COMPLETE; 542 event[1] = 9; 543 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 544 reverse_bd_addr(hci_connection->address, &event[4]); 545 event[10] = status; 546 hci_emit_event(event, sizeof(event), 1); 547 548 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 549 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 550 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 551 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 552 hci_connection->bonding_status = status; 553 } 554 } 555 556 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 557 hci_connection_t * conn = hci_connection_for_handle(handle); 558 if (!conn) return false; 559 return hci_pairing_active(conn); 560 } 561 562 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 563 if (!hci_stack->link_key_db) return; 564 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 565 hci_stack->link_key_db->delete_link_key(addr); 566 } 567 568 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 569 if (!hci_stack->link_key_db) return; 570 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 571 hci_stack->link_key_db->put_link_key(addr, link_key, type); 572 } 573 574 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 575 if (!hci_stack->link_key_db) return false; 576 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 577 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 578 return result; 579 } 580 581 void gap_delete_all_link_keys(void){ 582 bd_addr_t addr; 583 link_key_t link_key; 584 link_key_type_t type; 585 btstack_link_key_iterator_t it; 586 int ok = gap_link_key_iterator_init(&it); 587 if (!ok) { 588 log_error("could not initialize iterator"); 589 return; 590 } 591 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 592 gap_drop_link_key_for_bd_addr(addr); 593 } 594 gap_link_key_iterator_done(&it); 595 } 596 597 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 598 if (!hci_stack->link_key_db) return 0; 599 if (!hci_stack->link_key_db->iterator_init) return 0; 600 return hci_stack->link_key_db->iterator_init(it); 601 } 602 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){ 603 if (!hci_stack->link_key_db) return 0; 604 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 605 } 606 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 607 if (!hci_stack->link_key_db) return; 608 hci_stack->link_key_db->iterator_done(it); 609 } 610 #endif 611 612 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 613 switch (address_type){ 614 case BD_ADDR_TYPE_LE_PUBLIC: 615 case BD_ADDR_TYPE_LE_RANDOM: 616 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 617 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 618 return true; 619 default: 620 return false; 621 } 622 } 623 624 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 625 switch (address_type){ 626 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 627 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 628 return true; 629 default: 630 return false; 631 } 632 } 633 634 static bool hci_is_le_connection(hci_connection_t * connection){ 635 return hci_is_le_connection_type(connection->address_type); 636 } 637 638 /** 639 * count connections 640 */ 641 static int nr_hci_connections(void){ 642 int count = 0; 643 btstack_linked_item_t *it; 644 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 645 count++; 646 } 647 return count; 648 } 649 650 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 651 652 unsigned int num_packets_sent_classic = 0; 653 unsigned int num_packets_sent_le = 0; 654 655 btstack_linked_item_t *it; 656 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 657 hci_connection_t * connection = (hci_connection_t *) it; 658 if (hci_is_le_connection(connection)){ 659 num_packets_sent_le += connection->num_packets_sent; 660 } 661 if (connection->address_type == BD_ADDR_TYPE_ACL){ 662 num_packets_sent_classic += connection->num_packets_sent; 663 } 664 } 665 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 666 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 667 int free_slots_le = 0; 668 669 if (free_slots_classic < 0){ 670 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); 671 return 0; 672 } 673 674 if (hci_stack->le_acl_packets_total_num){ 675 // if we have LE slots, they are used 676 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 677 if (free_slots_le < 0){ 678 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); 679 return 0; 680 } 681 } else { 682 // otherwise, classic slots are used for LE, too 683 free_slots_classic -= num_packets_sent_le; 684 if (free_slots_classic < 0){ 685 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); 686 return 0; 687 } 688 } 689 690 switch (address_type){ 691 case BD_ADDR_TYPE_UNKNOWN: 692 log_error("hci_number_free_acl_slots: unknown address type"); 693 return 0; 694 695 case BD_ADDR_TYPE_ACL: 696 return (uint16_t) free_slots_classic; 697 698 default: 699 if (hci_stack->le_acl_packets_total_num > 0){ 700 return (uint16_t) free_slots_le; 701 } 702 return (uint16_t) free_slots_classic; 703 } 704 } 705 706 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 707 // get connection type 708 hci_connection_t * connection = hci_connection_for_handle(con_handle); 709 if (!connection){ 710 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 711 return 0; 712 } 713 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 714 } 715 716 #ifdef ENABLE_CLASSIC 717 static int hci_number_free_sco_slots(void){ 718 unsigned int num_sco_packets_sent = 0; 719 btstack_linked_item_t *it; 720 if (hci_stack->synchronous_flow_control_enabled){ 721 // explicit flow control 722 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 723 hci_connection_t * connection = (hci_connection_t *) it; 724 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 725 num_sco_packets_sent += connection->num_packets_sent; 726 } 727 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 728 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 729 return 0; 730 } 731 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 732 } else { 733 // implicit flow control 734 int num_ready = 0; 735 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 736 hci_connection_t * connection = (hci_connection_t *) it; 737 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 738 if (connection->sco_tx_ready == 0) continue; 739 num_ready++; 740 } 741 return num_ready; 742 } 743 } 744 #endif 745 746 // only used to send HCI Host Number Completed Packets 747 static int hci_can_send_comand_packet_transport(void){ 748 if (hci_stack->hci_packet_buffer_reserved) return 0; 749 750 // check for async hci transport implementations 751 if (hci_stack->hci_transport->can_send_packet_now){ 752 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 753 return 0; 754 } 755 } 756 return 1; 757 } 758 759 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 760 bool hci_can_send_command_packet_now(void){ 761 if (hci_can_send_comand_packet_transport() == 0) return false; 762 return hci_stack->num_cmd_packets > 0u; 763 } 764 765 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 766 // check for async hci transport implementations 767 if (!hci_stack->hci_transport->can_send_packet_now) return true; 768 return hci_stack->hci_transport->can_send_packet_now(packet_type); 769 } 770 771 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 772 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 773 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 774 } 775 776 bool hci_can_send_acl_le_packet_now(void){ 777 if (hci_stack->hci_packet_buffer_reserved) return false; 778 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 779 } 780 781 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 782 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 783 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 784 } 785 786 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 787 if (hci_stack->hci_packet_buffer_reserved) return false; 788 return hci_can_send_prepared_acl_packet_now(con_handle); 789 } 790 791 #ifdef ENABLE_CLASSIC 792 bool hci_can_send_acl_classic_packet_now(void){ 793 if (hci_stack->hci_packet_buffer_reserved) return false; 794 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 795 } 796 797 bool hci_can_send_prepared_sco_packet_now(void){ 798 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 799 if (hci_have_usb_transport()){ 800 return hci_stack->sco_can_send_now; 801 } else { 802 return hci_number_free_sco_slots() > 0; 803 } 804 } 805 806 bool hci_can_send_sco_packet_now(void){ 807 if (hci_stack->hci_packet_buffer_reserved) return false; 808 return hci_can_send_prepared_sco_packet_now(); 809 } 810 811 void hci_request_sco_can_send_now_event(void){ 812 hci_stack->sco_waiting_for_can_send_now = 1; 813 hci_notify_if_sco_can_send_now(); 814 } 815 #endif 816 817 // used for internal checks in l2cap.c 818 bool hci_is_packet_buffer_reserved(void){ 819 return hci_stack->hci_packet_buffer_reserved; 820 } 821 822 void hci_reserve_packet_buffer(void){ 823 btstack_assert(hci_stack->hci_packet_buffer_reserved == false); 824 hci_stack->hci_packet_buffer_reserved = true; 825 } 826 827 void hci_release_packet_buffer(void){ 828 btstack_assert(hci_stack->hci_packet_buffer_reserved); 829 hci_stack->hci_packet_buffer_reserved = false; 830 hci_emit_transport_packet_sent(); 831 } 832 833 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 834 static int hci_transport_synchronous(void){ 835 return hci_stack->hci_transport->can_send_packet_now == NULL; 836 } 837 838 // used for debugging 839 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 840 static void hci_controller_dump_packets(void){ 841 // format: "{handle:04x}:{count:02d} " 842 char summaries[3][7 * 8 + 1]; 843 uint16_t totals[3]; 844 uint8_t index; 845 for (index = 0 ; index < 3 ; index++){ 846 summaries[index][0] = 0; 847 totals[index] = 0; 848 } 849 btstack_linked_item_t *it; 850 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 851 hci_connection_t * connection = (hci_connection_t *) it; 852 switch (connection->address_type){ 853 case BD_ADDR_TYPE_ACL: 854 index = 0; 855 break; 856 case BD_ADDR_TYPE_SCO: 857 index = 2; 858 break; 859 default: 860 index = 1; 861 break; 862 } 863 totals[index] += connection->num_packets_sent; 864 char item_text[10]; 865 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 866 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 867 } 868 for (index = 0 ; index < 3 ; index++){ 869 if (summaries[index][0] == 0){ 870 summaries[index][0] = '-'; 871 summaries[index][1] = 0; 872 } 873 } 874 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]); 875 } 876 #endif 877 878 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 879 880 // 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); 881 882 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 883 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 884 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 885 max_acl_data_packet_length = hci_stack->le_data_packets_length; 886 } 887 888 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 889 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 890 max_acl_data_packet_length = connection->le_max_tx_octets; 891 } 892 #endif 893 894 log_debug("hci_send_acl_packet_fragments entered"); 895 896 uint8_t status = ERROR_CODE_SUCCESS; 897 // multiple packets could be send on a synchronous HCI transport 898 while (true){ 899 900 log_debug("hci_send_acl_packet_fragments loop entered"); 901 902 // get current data 903 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 904 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 905 bool more_fragments = false; 906 907 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 908 if (current_acl_data_packet_length > max_acl_data_packet_length){ 909 more_fragments = true; 910 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 911 } 912 913 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 914 if (acl_header_pos > 0u){ 915 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 916 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 917 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 918 } 919 920 // update header len 921 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 922 923 // count packet 924 connection->num_packets_sent++; 925 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 926 927 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 928 if (more_fragments){ 929 // update start of next fragment to send 930 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 931 } else { 932 // done 933 hci_stack->acl_fragmentation_pos = 0; 934 hci_stack->acl_fragmentation_total_size = 0; 935 } 936 937 // send packet 938 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 939 const int size = current_acl_data_packet_length + 4; 940 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 941 hci_stack->acl_fragmentation_tx_active = 1; 942 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 943 if (err != 0){ 944 // no error from HCI Transport expected 945 status = ERROR_CODE_HARDWARE_FAILURE; 946 break; 947 } 948 949 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 950 hci_controller_dump_packets(); 951 #endif 952 953 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 954 955 // done yet? 956 if (!more_fragments) break; 957 958 // can send more? 959 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 960 } 961 962 log_debug("hci_send_acl_packet_fragments loop over"); 963 964 // release buffer now for synchronous transport 965 if (hci_transport_synchronous()){ 966 hci_stack->acl_fragmentation_tx_active = 0; 967 hci_release_packet_buffer(); 968 } 969 970 return status; 971 } 972 973 // pre: caller has reserved the packet buffer 974 uint8_t hci_send_acl_packet_buffer(int size){ 975 btstack_assert(hci_stack->hci_packet_buffer_reserved); 976 977 uint8_t * packet = hci_stack->hci_packet_buffer; 978 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 979 980 hci_connection_t *connection = hci_connection_for_handle( con_handle); 981 if (!connection) { 982 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 983 hci_release_packet_buffer(); 984 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 985 } 986 987 // check for free places on Bluetooth module 988 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 989 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 990 hci_release_packet_buffer(); 991 return BTSTACK_ACL_BUFFERS_FULL; 992 } 993 994 #ifdef ENABLE_CLASSIC 995 hci_connection_timestamp(connection); 996 #endif 997 998 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 999 1000 // setup data 1001 hci_stack->acl_fragmentation_total_size = size; 1002 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1003 1004 return hci_send_acl_packet_fragments(connection); 1005 } 1006 1007 #ifdef ENABLE_CLASSIC 1008 // pre: caller has reserved the packet buffer 1009 uint8_t hci_send_sco_packet_buffer(int size){ 1010 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1011 1012 uint8_t * packet = hci_stack->hci_packet_buffer; 1013 1014 // skip checks in loopback mode 1015 if (!hci_stack->loopback_mode){ 1016 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1017 1018 // check for free places on Bluetooth module 1019 if (!hci_can_send_prepared_sco_packet_now()) { 1020 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1021 hci_release_packet_buffer(); 1022 return BTSTACK_ACL_BUFFERS_FULL; 1023 } 1024 1025 // track send packet in connection struct 1026 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1027 if (!connection) { 1028 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1029 hci_release_packet_buffer(); 1030 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1031 } 1032 1033 if (hci_have_usb_transport()){ 1034 // token used 1035 hci_stack->sco_can_send_now = false; 1036 } else { 1037 if (hci_stack->synchronous_flow_control_enabled){ 1038 connection->num_packets_sent++; 1039 } else { 1040 connection->sco_tx_ready--; 1041 } 1042 } 1043 } 1044 1045 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1046 1047 #ifdef HAVE_SCO_TRANSPORT 1048 hci_stack->sco_transport->send_packet(packet, size); 1049 hci_release_packet_buffer(); 1050 hci_emit_transport_packet_sent(); 1051 1052 return 0; 1053 #else 1054 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1055 uint8_t status; 1056 if (err == 0){ 1057 status = ERROR_CODE_SUCCESS; 1058 } else { 1059 status = ERROR_CODE_HARDWARE_FAILURE; 1060 } 1061 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 1062 hci_release_packet_buffer(); 1063 } 1064 return status; 1065 #endif 1066 } 1067 #endif 1068 1069 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1070 static uint8_t hci_send_iso_packet_fragments(void){ 1071 1072 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1073 uint8_t status = ERROR_CODE_SUCCESS; 1074 // multiple packets could be send on a synchronous HCI transport 1075 while (true){ 1076 1077 // get current data 1078 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1079 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1080 bool more_fragments = false; 1081 1082 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1083 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1084 more_fragments = true; 1085 current_iso_data_packet_length = max_iso_data_packet_length; 1086 } 1087 1088 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1089 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1090 uint8_t pb_flags; 1091 if (iso_header_pos == 0u){ 1092 // first fragment, keep TS field 1093 pb_flags = more_fragments ? 0x00 : 0x02; 1094 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1095 } else { 1096 // later fragment, drop TS field 1097 pb_flags = more_fragments ? 0x01 : 0x03; 1098 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1099 } 1100 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1101 1102 // update header len 1103 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1104 1105 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1106 if (more_fragments){ 1107 // update start of next fragment to send 1108 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1109 } else { 1110 // done 1111 hci_stack->iso_fragmentation_pos = 0; 1112 hci_stack->iso_fragmentation_total_size = 0; 1113 } 1114 1115 // send packet 1116 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1117 const int size = current_iso_data_packet_length + 4; 1118 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1119 hci_stack->iso_fragmentation_tx_active = true; 1120 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1121 if (err != 0){ 1122 // no error from HCI Transport expected 1123 status = ERROR_CODE_HARDWARE_FAILURE; 1124 } 1125 1126 // done yet? 1127 if (!more_fragments) break; 1128 1129 // can send more? 1130 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1131 } 1132 1133 // release buffer now for synchronous transport 1134 if (hci_transport_synchronous()){ 1135 hci_stack->iso_fragmentation_tx_active = false; 1136 hci_release_packet_buffer(); 1137 hci_emit_transport_packet_sent(); 1138 } 1139 1140 return status; 1141 } 1142 1143 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1144 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1145 1146 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1147 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1148 if (iso_stream == NULL){ 1149 hci_release_packet_buffer(); 1150 hci_iso_notify_can_send_now(); 1151 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1152 } 1153 1154 // TODO: check for space on controller 1155 1156 // skip iso packets if needed 1157 if (iso_stream->num_packets_to_skip > 0){ 1158 iso_stream->num_packets_to_skip--; 1159 // pretend it was processed and trigger next one 1160 hci_release_packet_buffer(); 1161 hci_iso_notify_can_send_now(); 1162 return ERROR_CODE_SUCCESS; 1163 } 1164 1165 // track outgoing packet sent 1166 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1167 iso_stream->num_packets_sent++; 1168 1169 // setup data 1170 hci_stack->iso_fragmentation_total_size = size; 1171 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1172 1173 return hci_send_iso_packet_fragments(); 1174 } 1175 #endif 1176 1177 static void acl_handler(uint8_t *packet, uint16_t size){ 1178 1179 // get info 1180 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1181 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1182 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1183 uint16_t acl_length = READ_ACL_LENGTH(packet); 1184 1185 // ignore non-registered handle 1186 if (!conn){ 1187 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1188 return; 1189 } 1190 1191 // assert packet is complete 1192 if ((acl_length + 4u) != size){ 1193 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1194 return; 1195 } 1196 1197 #ifdef ENABLE_CLASSIC 1198 // update idle timestamp 1199 hci_connection_timestamp(conn); 1200 #endif 1201 1202 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1203 hci_stack->host_completed_packets = 1; 1204 conn->num_packets_completed++; 1205 #endif 1206 1207 // handle different packet types 1208 switch (acl_flags & 0x03u) { 1209 1210 case 0x01: // continuation fragment 1211 1212 // sanity checks 1213 if (conn->acl_recombination_pos == 0u) { 1214 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1215 return; 1216 } 1217 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1218 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1219 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1220 conn->acl_recombination_pos = 0; 1221 return; 1222 } 1223 1224 // append fragment payload (header already stored) 1225 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1226 &packet[4], acl_length); 1227 conn->acl_recombination_pos += acl_length; 1228 1229 // forward complete L2CAP packet if complete. 1230 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1231 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1232 // reset recombination buffer 1233 conn->acl_recombination_length = 0; 1234 conn->acl_recombination_pos = 0; 1235 } 1236 break; 1237 1238 case 0x02: { // first fragment 1239 1240 // sanity check 1241 if (conn->acl_recombination_pos) { 1242 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1243 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1244 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1245 } 1246 conn->acl_recombination_pos = 0; 1247 } 1248 1249 // peek into L2CAP packet! 1250 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1251 1252 // compare fragment size to L2CAP packet size 1253 if (acl_length >= (l2cap_length + 4u)){ 1254 // forward fragment as L2CAP packet 1255 hci_emit_acl_packet(packet, acl_length + 4u); 1256 } else { 1257 1258 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1259 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1260 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1261 return; 1262 } 1263 1264 // store first fragment and tweak acl length for complete package 1265 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1266 packet, acl_length + 4u); 1267 conn->acl_recombination_pos = acl_length + 4u; 1268 conn->acl_recombination_length = l2cap_length; 1269 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1270 } 1271 break; 1272 1273 } 1274 default: 1275 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1276 return; 1277 } 1278 1279 // execute main loop 1280 hci_run(); 1281 } 1282 1283 static void hci_connection_stop_timer(hci_connection_t * conn){ 1284 btstack_run_loop_remove_timer(&conn->timeout); 1285 #ifdef ENABLE_CLASSIC 1286 btstack_run_loop_remove_timer(&conn->timeout_sco); 1287 #endif 1288 } 1289 1290 static void hci_shutdown_connection(hci_connection_t *conn){ 1291 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1292 1293 #ifdef ENABLE_CLASSIC 1294 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1295 bd_addr_type_t addr_type = conn->address_type; 1296 #endif 1297 #ifdef HAVE_SCO_TRANSPORT 1298 hci_con_handle_t con_handle = conn->con_handle; 1299 #endif 1300 #endif 1301 1302 hci_connection_stop_timer(conn); 1303 1304 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1305 btstack_memory_hci_connection_free( conn ); 1306 1307 // now it's gone 1308 hci_emit_nr_connections_changed(); 1309 1310 #ifdef ENABLE_CLASSIC 1311 #ifdef ENABLE_SCO_OVER_HCI 1312 // update SCO 1313 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1314 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1315 } 1316 #endif 1317 #ifdef HAVE_SCO_TRANSPORT 1318 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1319 hci_stack->sco_transport->close(con_handle); 1320 } 1321 #endif 1322 #endif 1323 } 1324 1325 #ifdef ENABLE_CLASSIC 1326 1327 static const uint16_t hci_acl_packet_type_sizes[] = { 1328 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1329 HCI_ACL_DH1_SIZE, 0, 0, 0, 1330 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1331 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1332 }; 1333 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1334 0, // 3 slot packets 1335 1, // 5 slot packets 1336 25, // EDR 2 mpbs 1337 26, // EDR 3 mbps 1338 39, // 3 slot EDR packts 1339 40, // 5 slot EDR packet 1340 }; 1341 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1342 0x0f00, // 3 slot packets 1343 0xf000, // 5 slot packets 1344 0x1102, // EDR 2 mpbs 1345 0x2204, // EDR 3 mbps 1346 0x0300, // 3 slot EDR packts 1347 0x3000, // 5 slot EDR packet 1348 }; 1349 1350 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1351 // enable packet types based on size 1352 uint16_t packet_types = 0; 1353 unsigned int i; 1354 for (i=0;i<16;i++){ 1355 if (hci_acl_packet_type_sizes[i] == 0) continue; 1356 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1357 packet_types |= 1 << i; 1358 } 1359 } 1360 // disable packet types due to missing local supported features 1361 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1362 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1363 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1364 if (feature_set) continue; 1365 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1366 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1367 } 1368 return packet_types; 1369 } 1370 1371 uint16_t hci_usable_acl_packet_types(void){ 1372 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1373 // flip bits for "may not be used" 1374 return active_packet_types ^ 0x3306; 1375 } 1376 1377 void hci_enable_acl_packet_types(uint16_t packet_types){ 1378 hci_stack->enabled_packet_types_acl = packet_types; 1379 } 1380 1381 static const struct { 1382 uint8_t feature_index; 1383 uint16_t feature_packet_mask; 1384 } hci_sco_packet_type_feature_requirements[] = { 1385 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1386 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1387 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1388 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1389 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1390 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1391 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1392 }; 1393 1394 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1395 static const struct { 1396 uint16_t type; 1397 uint16_t payload_length; 1398 } hci_sco_packet_type_to_payload_length[] = { 1399 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1400 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1401 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1402 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1403 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1404 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1405 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1406 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1407 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1408 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1409 }; 1410 1411 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1412 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1413 unsigned int i; 1414 // disable packet types due to missing local supported features 1415 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1416 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1417 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1418 if (feature_set) continue; 1419 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); 1420 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1421 } 1422 return packet_types; 1423 } 1424 1425 uint16_t hci_usable_sco_packet_types(void){ 1426 return hci_stack->usable_packet_types_sco; 1427 } 1428 1429 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1430 uint8_t i; 1431 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1432 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1433 return hci_sco_packet_type_to_payload_length[i].payload_length; 1434 } 1435 } 1436 return 0; 1437 } 1438 1439 #endif 1440 1441 uint8_t* hci_get_outgoing_packet_buffer(void){ 1442 // hci packet buffer is >= acl data packet length 1443 return hci_stack->hci_packet_buffer; 1444 } 1445 1446 uint16_t hci_max_acl_data_packet_length(void){ 1447 return hci_stack->acl_data_packet_length; 1448 } 1449 1450 #ifdef ENABLE_CLASSIC 1451 bool hci_extended_sco_link_supported(void){ 1452 // No. 31, byte 3, bit 7 1453 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1454 } 1455 #endif 1456 1457 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1458 // No. 54, byte 6, bit 6 1459 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1460 } 1461 1462 #ifdef ENABLE_CLASSIC 1463 static bool gap_ssp_supported(void){ 1464 // No. 51, byte 6, bit 3 1465 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1466 } 1467 #endif 1468 1469 bool hci_classic_supported(void){ 1470 #ifdef ENABLE_CLASSIC 1471 // No. 37, byte 4, bit 5, = No BR/EDR Support 1472 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1473 #else 1474 return false; 1475 #endif 1476 } 1477 1478 bool hci_le_supported(void){ 1479 #ifdef ENABLE_BLE 1480 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1481 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1482 #else 1483 return false; 1484 #endif 1485 } 1486 1487 static bool hci_command_supported(uint8_t command_index){ 1488 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1489 } 1490 1491 #ifdef ENABLE_BLE 1492 1493 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1494 bool hci_le_extended_advertising_supported(void){ 1495 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1496 } 1497 #endif 1498 1499 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1500 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1501 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1502 } else { 1503 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1504 } 1505 } 1506 1507 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1508 *addr_type = hci_stack->le_own_addr_type; 1509 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1510 } 1511 1512 #ifdef ENABLE_LE_PERIPHERAL 1513 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1514 *addr_type = hci_stack->le_advertisements_own_addr_type; 1515 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1516 }; 1517 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1518 void gap_le_get_own_advertising_set_address(uint8_t * addr_type, bd_addr_t addr, uint8_t advertising_handle){ 1519 if (advertising_handle == 0){ 1520 gap_le_get_own_advertisements_address(addr_type, addr); 1521 } else { 1522 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 1523 if (advertising_set != NULL){ 1524 switch (advertising_set->extended_params.own_address_type){ 1525 case BD_ADDR_TYPE_LE_PUBLIC: 1526 *addr_type = BD_ADDR_TYPE_LE_PUBLIC; 1527 memcpy(addr, hci_stack->local_bd_addr, 6); 1528 break; 1529 case BD_ADDR_TYPE_LE_RANDOM: 1530 *addr_type = BD_ADDR_TYPE_LE_RANDOM; 1531 memcpy(addr, advertising_set->random_address, 6); 1532 break; 1533 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 1534 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 1535 // do nothing as random address was already set from enhanced connection complete 1536 break; 1537 default: 1538 break; 1539 } 1540 } 1541 } 1542 }; 1543 #endif 1544 #endif 1545 1546 #ifdef ENABLE_LE_CENTRAL 1547 1548 /** 1549 * @brief Get own addr type and address used for LE connections (Central) 1550 */ 1551 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1552 *addr_type = hci_stack->le_connection_own_addr_type; 1553 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1554 } 1555 1556 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1557 1558 uint16_t offset = 3; 1559 uint8_t num_reports = packet[offset]; 1560 offset += 1; 1561 1562 uint16_t i; 1563 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1564 for (i=0; (i<num_reports) && (offset < size);i++){ 1565 // sanity checks on data_length: 1566 uint8_t data_length = packet[offset + 8]; 1567 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1568 if ((offset + 9u + data_length + 1u) > size) return; 1569 // setup event 1570 uint8_t event_size = 10u + data_length; 1571 uint16_t pos = 0; 1572 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1573 event[pos++] = event_size; 1574 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1575 offset += 8; 1576 pos += 8; 1577 event[pos++] = packet[offset + 1 + data_length]; // rssi 1578 event[pos++] = data_length; 1579 offset++; 1580 (void)memcpy(&event[pos], &packet[offset], data_length); 1581 pos += data_length; 1582 offset += data_length + 1u; // rssi 1583 hci_emit_event(event, pos, 1); 1584 } 1585 } 1586 1587 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1588 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1589 uint16_t offset = 3; 1590 uint8_t num_reports = packet[offset++]; 1591 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1592 uint8_t i; 1593 for (i=0; (i<num_reports) && (offset < size);i++){ 1594 // sanity checks on data_length: 1595 uint16_t data_length = packet[offset + 23]; 1596 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1597 if ((offset + 24u + data_length) > size) return; 1598 uint16_t event_type = little_endian_read_16(packet, offset); 1599 offset += 2; 1600 if ((event_type & 0x10) != 0) { 1601 // setup legacy event 1602 uint8_t legacy_event_type; 1603 switch (event_type){ 1604 case 0b0010011: 1605 // ADV_IND 1606 legacy_event_type = 0; 1607 break; 1608 case 0b0010101: 1609 // ADV_DIRECT_IND 1610 legacy_event_type = 1; 1611 break; 1612 case 0b0010010: 1613 // ADV_SCAN_IND 1614 legacy_event_type = 2; 1615 break; 1616 case 0b0010000: 1617 // ADV_NONCONN_IND 1618 legacy_event_type = 3; 1619 break; 1620 case 0b0011011: 1621 case 0b0011010: 1622 // SCAN_RSP 1623 legacy_event_type = 4; 1624 break; 1625 default: 1626 legacy_event_type = 0; 1627 break; 1628 } 1629 uint16_t pos = 0; 1630 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1631 event[pos++] = 10u + data_length; 1632 event[pos++] = legacy_event_type; 1633 // copy address type + address 1634 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1635 offset += 7; 1636 pos += 7; 1637 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1638 offset += 4; 1639 // copy rssi 1640 event[pos++] = packet[offset++]; 1641 // skip periodic advertising interval and direct address 1642 offset += 9; 1643 // copy data len + data; 1644 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1645 pos += 1 +data_length; 1646 offset += 1+ data_length; 1647 hci_emit_event(event, pos, 1); 1648 } else { 1649 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1650 uint8_t report_len = 24 + data_length; 1651 event[1] = report_len; 1652 little_endian_store_16(event, 2, event_type); 1653 memcpy(&event[4], &packet[offset], report_len); 1654 offset += report_len; 1655 hci_emit_event(event, 2 + report_len, 1); 1656 } 1657 } 1658 } 1659 #endif 1660 1661 #endif 1662 #endif 1663 1664 #ifdef ENABLE_BLE 1665 #ifdef ENABLE_LE_PERIPHERAL 1666 static void hci_update_advertisements_enabled_for_current_roles(void){ 1667 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1668 // get number of active le slave connections 1669 int num_slave_connections = 0; 1670 btstack_linked_list_iterator_t it; 1671 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1672 while (btstack_linked_list_iterator_has_next(&it)){ 1673 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1674 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1675 if (con->state != OPEN) continue; 1676 if (con->role != HCI_ROLE_SLAVE) continue; 1677 if (!hci_is_le_connection(con)) continue; 1678 num_slave_connections++; 1679 } 1680 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1681 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1682 } else { 1683 hci_stack->le_advertisements_enabled_for_current_roles = false; 1684 } 1685 } 1686 #endif 1687 #endif 1688 1689 #ifdef ENABLE_CLASSIC 1690 static void gap_run_set_local_name(void){ 1691 hci_reserve_packet_buffer(); 1692 uint8_t * packet = hci_stack->hci_packet_buffer; 1693 // construct HCI Command and send 1694 uint16_t opcode = hci_write_local_name.opcode; 1695 packet[0] = opcode & 0xff; 1696 packet[1] = opcode >> 8; 1697 packet[2] = DEVICE_NAME_LEN; 1698 memset(&packet[3], 0, DEVICE_NAME_LEN); 1699 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1700 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1701 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1702 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1703 // expand '00:00:00:00:00:00' in name with bd_addr 1704 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1705 hci_send_prepared_cmd_packet(); 1706 } 1707 1708 static void gap_run_set_eir_data(void){ 1709 hci_reserve_packet_buffer(); 1710 uint8_t * packet = hci_stack->hci_packet_buffer; 1711 // construct HCI Command in-place and send 1712 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1713 uint16_t offset = 0; 1714 packet[offset++] = opcode & 0xff; 1715 packet[offset++] = opcode >> 8; 1716 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1717 packet[offset++] = 0; // FEC not required 1718 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1719 if (hci_stack->eir_data){ 1720 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1721 ad_context_t context; 1722 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1723 uint8_t data_type = ad_iterator_get_data_type(&context); 1724 uint8_t size = ad_iterator_get_data_len(&context); 1725 const uint8_t *data = ad_iterator_get_data(&context); 1726 // copy item 1727 packet[offset++] = size + 1; 1728 packet[offset++] = data_type; 1729 memcpy(&packet[offset], data, size); 1730 // update name item 1731 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1732 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1733 } 1734 offset += size; 1735 } 1736 } else { 1737 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1738 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1739 packet[offset++] = bytes_to_copy + 1; 1740 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1741 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1742 // expand '00:00:00:00:00:00' in name with bd_addr 1743 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1744 } 1745 hci_send_prepared_cmd_packet(); 1746 } 1747 1748 static void hci_run_gap_tasks_classic(void){ 1749 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1750 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1751 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1752 return; 1753 } 1754 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1755 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1756 gap_run_set_local_name(); 1757 return; 1758 } 1759 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1760 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1761 gap_run_set_eir_data(); 1762 return; 1763 } 1764 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1765 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1766 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1767 return; 1768 } 1769 // write page scan activity 1770 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1771 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1772 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1773 return; 1774 } 1775 // write page scan type 1776 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1777 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1778 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1779 return; 1780 } 1781 // write page timeout 1782 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1783 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1784 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1785 return; 1786 } 1787 // send scan enable 1788 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1789 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1790 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1791 return; 1792 } 1793 // send write scan activity 1794 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1795 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1796 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1797 return; 1798 } 1799 // send write inquiry transmit power level 1800 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1801 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1802 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1803 return; 1804 } 1805 } 1806 #endif 1807 1808 #ifndef HAVE_HOST_CONTROLLER_API 1809 1810 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1811 if (!hci_stack->config) return 0; 1812 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1813 // Limit baud rate for Broadcom chipsets to 3 mbps 1814 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1815 baud_rate = 3000000; 1816 } 1817 return baud_rate; 1818 } 1819 1820 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1821 UNUSED(ds); 1822 1823 switch (hci_stack->substate){ 1824 case HCI_INIT_W4_SEND_RESET: 1825 log_info("Resend HCI Reset"); 1826 hci_stack->substate = HCI_INIT_SEND_RESET; 1827 hci_stack->num_cmd_packets = 1; 1828 hci_run(); 1829 break; 1830 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1831 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1832 if (hci_stack->hci_transport->reset_link){ 1833 hci_stack->hci_transport->reset_link(); 1834 } 1835 1836 /* fall through */ 1837 1838 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1839 log_info("Resend HCI Reset - CSR Warm Boot"); 1840 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1841 hci_stack->num_cmd_packets = 1; 1842 hci_run(); 1843 break; 1844 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1845 if (hci_stack->hci_transport->set_baudrate){ 1846 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1847 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1848 hci_stack->hci_transport->set_baudrate(baud_rate); 1849 } 1850 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1851 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1852 if (hci_stack->hci_transport->reset_link){ 1853 log_info("Link Reset"); 1854 hci_stack->hci_transport->reset_link(); 1855 } 1856 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1857 hci_run(); 1858 } 1859 break; 1860 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1861 // otherwise continue 1862 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1863 hci_send_cmd(&hci_read_local_supported_commands); 1864 break; 1865 default: 1866 break; 1867 } 1868 } 1869 #endif 1870 1871 static void hci_initializing_next_state(void){ 1872 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1873 } 1874 1875 static void hci_init_done(void){ 1876 // done. tell the app 1877 log_info("hci_init_done -> HCI_STATE_WORKING"); 1878 hci_stack->state = HCI_STATE_WORKING; 1879 hci_emit_state(); 1880 } 1881 1882 // assumption: hci_can_send_command_packet_now() == true 1883 static void hci_initializing_run(void){ 1884 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1885 1886 if (!hci_can_send_command_packet_now()) return; 1887 1888 #ifndef HAVE_HOST_CONTROLLER_API 1889 bool need_baud_change = hci_stack->config 1890 && hci_stack->chipset 1891 && hci_stack->chipset->set_baudrate_command 1892 && hci_stack->hci_transport->set_baudrate 1893 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1894 #endif 1895 1896 switch (hci_stack->substate){ 1897 case HCI_INIT_SEND_RESET: 1898 hci_state_reset(); 1899 1900 #ifndef HAVE_HOST_CONTROLLER_API 1901 // prepare reset if command complete not received in 100ms 1902 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1903 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1904 btstack_run_loop_add_timer(&hci_stack->timeout); 1905 #endif 1906 // send command 1907 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1908 hci_send_cmd(&hci_reset); 1909 break; 1910 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1911 hci_send_cmd(&hci_read_local_version_information); 1912 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1913 break; 1914 1915 #ifndef HAVE_HOST_CONTROLLER_API 1916 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1917 hci_state_reset(); 1918 // prepare reset if command complete not received in 100ms 1919 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1920 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1921 btstack_run_loop_add_timer(&hci_stack->timeout); 1922 // send command 1923 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1924 hci_send_cmd(&hci_reset); 1925 break; 1926 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1927 hci_state_reset(); 1928 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1929 hci_send_cmd(&hci_reset); 1930 break; 1931 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1932 hci_reserve_packet_buffer(); 1933 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1934 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1935 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1936 hci_send_prepared_cmd_packet(); 1937 break; 1938 } 1939 case HCI_INIT_SET_BD_ADDR: 1940 hci_reserve_packet_buffer(); 1941 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1942 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1943 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1944 hci_send_prepared_cmd_packet(); 1945 break; 1946 case HCI_INIT_SEND_READ_LOCAL_NAME: 1947 #ifdef ENABLE_CLASSIC 1948 hci_send_cmd(&hci_read_local_name); 1949 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1950 break; 1951 #endif 1952 /* fall through */ 1953 1954 case HCI_INIT_SEND_BAUD_CHANGE: 1955 if (need_baud_change) { 1956 hci_reserve_packet_buffer(); 1957 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1958 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1959 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1960 hci_send_prepared_cmd_packet(); 1961 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1962 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1963 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1964 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1965 btstack_run_loop_add_timer(&hci_stack->timeout); 1966 } 1967 break; 1968 } 1969 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1970 1971 /* fall through */ 1972 1973 case HCI_INIT_CUSTOM_INIT: 1974 case HCI_INIT_CUSTOM_PRE_INIT: 1975 // Custom initialization 1976 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1977 hci_reserve_packet_buffer(); 1978 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1979 bool send_cmd = false; 1980 switch (hci_stack->chipset_result){ 1981 case BTSTACK_CHIPSET_VALID_COMMAND: 1982 send_cmd = true; 1983 switch (hci_stack->substate){ 1984 case HCI_INIT_CUSTOM_INIT: 1985 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1986 break; 1987 case HCI_INIT_CUSTOM_PRE_INIT: 1988 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1989 break; 1990 default: 1991 btstack_assert(false); 1992 break; 1993 } 1994 break; 1995 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1996 send_cmd = true; 1997 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1998 log_info("CSR Warm Boot"); 1999 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 2000 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2001 btstack_run_loop_add_timer(&hci_stack->timeout); 2002 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 2003 && hci_stack->config 2004 && hci_stack->chipset 2005 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2006 && hci_stack->hci_transport->set_baudrate 2007 && hci_transport_uart_get_main_baud_rate()){ 2008 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2009 } else { 2010 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2011 } 2012 break; 2013 default: 2014 break; 2015 } 2016 2017 if (send_cmd){ 2018 hci_send_prepared_cmd_packet(); 2019 break; 2020 } else { 2021 hci_release_packet_buffer(); 2022 } 2023 log_info("Init script done"); 2024 2025 // Custom Pre-Init complete, start regular init with HCI Reset 2026 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2027 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2028 hci_send_cmd(&hci_reset); 2029 break; 2030 } 2031 2032 // Init script download on Broadcom chipsets causes: 2033 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2034 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2035 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2036 2037 // - baud rate to reset, restore UART baud rate if needed 2038 if (need_baud_change) { 2039 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2040 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2041 hci_stack->hci_transport->set_baudrate(baud_rate); 2042 } 2043 2044 uint16_t bcm_delay_ms = 300; 2045 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2046 // -> Work around: wait here. 2047 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2048 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2049 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2050 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2051 btstack_run_loop_add_timer(&hci_stack->timeout); 2052 break; 2053 } 2054 } 2055 #endif 2056 /* fall through */ 2057 2058 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2059 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2060 hci_send_cmd(&hci_read_local_supported_commands); 2061 break; 2062 case HCI_INIT_READ_BD_ADDR: 2063 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2064 hci_send_cmd(&hci_read_bd_addr); 2065 break; 2066 case HCI_INIT_READ_BUFFER_SIZE: 2067 // only read buffer size if supported 2068 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2069 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2070 hci_send_cmd(&hci_read_buffer_size); 2071 break; 2072 } 2073 2074 /* fall through */ 2075 2076 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2077 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2078 hci_send_cmd(&hci_read_local_supported_features); 2079 break; 2080 2081 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2082 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2083 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2084 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2085 break; 2086 case HCI_INIT_HOST_BUFFER_SIZE: 2087 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2088 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2089 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2090 break; 2091 #endif 2092 2093 case HCI_INIT_SET_EVENT_MASK: 2094 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2095 if (hci_le_supported()){ 2096 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2097 } else { 2098 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2099 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2100 } 2101 break; 2102 2103 case HCI_INIT_SET_EVENT_MASK_2: 2104 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2105 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2106 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2107 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2108 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2109 // Encryption Change Event v2 - bit 25 2110 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2111 break; 2112 } 2113 2114 #ifdef ENABLE_CLASSIC 2115 /* fall through */ 2116 2117 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2118 if (hci_classic_supported() && gap_ssp_supported()){ 2119 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2120 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2121 break; 2122 } 2123 2124 /* fall through */ 2125 2126 case HCI_INIT_WRITE_INQUIRY_MODE: 2127 if (hci_classic_supported()){ 2128 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2129 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2130 break; 2131 } 2132 2133 /* fall through */ 2134 2135 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2136 // skip write secure connections host support if not supported or disabled 2137 if (hci_classic_supported() && hci_stack->secure_connections_enable 2138 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2139 hci_stack->secure_connections_active = true; 2140 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2141 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2142 break; 2143 } 2144 2145 /* fall through */ 2146 2147 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2148 // skip set min encryption key size 2149 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2150 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2151 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2152 break; 2153 } 2154 2155 #ifdef ENABLE_SCO_OVER_HCI 2156 /* fall through */ 2157 2158 // only sent if ENABLE_SCO_OVER_HCI is defined 2159 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2160 // skip write synchronous flow control if not supported 2161 if (hci_classic_supported() 2162 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2163 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2164 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2165 break; 2166 } 2167 /* fall through */ 2168 2169 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2170 // skip write default erroneous data reporting if not supported 2171 if (hci_classic_supported() 2172 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2173 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2174 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2175 break; 2176 } 2177 #endif 2178 2179 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2180 /* fall through */ 2181 2182 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2183 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2184 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2185 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2186 #ifdef ENABLE_SCO_OVER_HCI 2187 log_info("BCM: Route SCO data via HCI transport"); 2188 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2189 #endif 2190 #ifdef ENABLE_SCO_OVER_PCM 2191 log_info("BCM: Route SCO data via PCM interface"); 2192 #ifdef ENABLE_BCM_PCM_WBS 2193 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2194 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2195 #else 2196 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2197 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2198 #endif 2199 #endif 2200 break; 2201 } 2202 #endif 2203 2204 #ifdef ENABLE_SCO_OVER_PCM 2205 /* fall through */ 2206 2207 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2208 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2209 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2210 log_info("BCM: Config PCM interface for I2S"); 2211 #ifdef ENABLE_BCM_PCM_WBS 2212 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2213 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2214 #else 2215 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2216 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2217 #endif 2218 break; 2219 } 2220 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2221 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2222 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2223 log_info("BCM: Config PCM Data format"); 2224 // msb first, fill bits 0, left justified 2225 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2226 break; 2227 } 2228 #ifdef HAVE_BCM_PCM2 2229 case HCI_INIT_BCM_PCM2_SETUP: 2230 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2231 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2232 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2233 uint32_t pcm_clock_freq; 2234 uint8_t ch_0_period; 2235 #ifdef ENABLE_BCM_PCM_WBS 2236 // 512 kHz, resample 8 kHz to 16 khz 2237 pcm_clock_freq = 512000; 2238 ch_0_period = 1; 2239 #else 2240 // 256 khz, 8 khz output 2241 pcm_clock_freq = 256000; 2242 ch_0_period = 0; 2243 #endif 2244 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2245 hci_send_cmd(&hci_bcm_pcm2_setup, 2246 0x00, // Action = Write 2247 0x00, // Test_Options = None 2248 op_mode, // Op_Mode 2249 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2250 pcm_clock_freq, // PCM_Clock_Freq 2251 0x01, // Sync_Signal_Width 2252 0x0F, // Slot_Width 2253 0x01, // NumberOfSlots 2254 0x00, // Bank_0_Fill_Mode = 0s 2255 0x00, // Bank_0_Number_of_Fill_Bits 2256 0x00, // Bank_0_Programmable_Fill_Data 2257 0x00, // Bank_1_Fill_Mode = 0s 2258 0x00, // Bank_1_Number_of_Fill_Bits 2259 0x00, // Bank_1_Programmable_Fill_Data 2260 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2261 0x00, // Ch_0_Slot_Number 2262 0x01, // Ch_1_Slot_Number 2263 0x02, // Ch_2_Slot_Number 2264 0x03, // Ch_3_Slot_Number 2265 0x04, // Ch_4_Slot_Number 2266 ch_0_period, // Ch_0_Period 2267 0x00, // Ch_1_Period 2268 0x00 // Ch_2_Period 2269 ); 2270 break; 2271 } 2272 #endif 2273 #endif /* ENABLE_SCO_OVER_PCM */ 2274 #endif /* ENABLE_CLASSIC */ 2275 2276 #ifdef ENABLE_BLE 2277 /* fall through */ 2278 2279 // LE INIT 2280 case HCI_INIT_LE_READ_BUFFER_SIZE: 2281 if (hci_le_supported()){ 2282 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2283 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2284 hci_send_cmd(&hci_le_read_buffer_size_v2); 2285 } else { 2286 hci_send_cmd(&hci_le_read_buffer_size); 2287 } 2288 break; 2289 } 2290 2291 /* fall through */ 2292 2293 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2294 // skip write le host if not supported (e.g. on LE only EM9301) 2295 if (hci_le_supported() 2296 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2297 // LE Supported Host = 1, Simultaneous Host = 0 2298 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2299 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2300 break; 2301 } 2302 2303 /* fall through */ 2304 2305 case HCI_INIT_LE_SET_EVENT_MASK: 2306 if (hci_le_supported()){ 2307 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2308 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2309 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2310 #else 2311 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2312 #endif 2313 break; 2314 } 2315 #endif 2316 2317 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2318 /* fall through */ 2319 2320 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2321 if (hci_le_supported() 2322 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2323 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2324 hci_send_cmd(&hci_le_read_maximum_data_length); 2325 break; 2326 } 2327 2328 /* fall through */ 2329 2330 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2331 if (hci_le_supported() 2332 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2333 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2334 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2335 break; 2336 } 2337 #endif 2338 2339 #ifdef ENABLE_LE_CENTRAL 2340 /* fall through */ 2341 2342 case HCI_INIT_READ_WHITE_LIST_SIZE: 2343 if (hci_le_supported()){ 2344 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2345 hci_send_cmd(&hci_le_read_white_list_size); 2346 break; 2347 } 2348 2349 #endif 2350 2351 #ifdef ENABLE_LE_PERIPHERAL 2352 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2353 /* fall through */ 2354 2355 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2356 if (hci_le_extended_advertising_supported()){ 2357 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2358 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2359 break; 2360 } 2361 #endif 2362 #endif 2363 /* fall through */ 2364 2365 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2366 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2367 if (hci_le_supported()) { 2368 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2369 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2370 break; 2371 } 2372 #endif 2373 2374 /* fall through */ 2375 2376 case HCI_INIT_DONE: 2377 hci_stack->substate = HCI_INIT_DONE; 2378 // main init sequence complete 2379 #ifdef ENABLE_CLASSIC 2380 // check if initial Classic GAP Tasks are completed 2381 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2382 hci_run_gap_tasks_classic(); 2383 break; 2384 } 2385 #endif 2386 #ifdef ENABLE_BLE 2387 #ifdef ENABLE_LE_CENTRAL 2388 // check if initial LE GAP Tasks are completed 2389 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2390 hci_run_general_gap_le(); 2391 break; 2392 } 2393 #endif 2394 #endif 2395 hci_init_done(); 2396 break; 2397 2398 default: 2399 return; 2400 } 2401 } 2402 2403 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2404 bool command_completed = false; 2405 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2406 uint16_t opcode = little_endian_read_16(packet,3); 2407 if (opcode == hci_stack->last_cmd_opcode){ 2408 command_completed = true; 2409 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2410 } else { 2411 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2412 } 2413 } 2414 2415 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2416 uint8_t status = packet[2]; 2417 uint16_t opcode = little_endian_read_16(packet,4); 2418 if (opcode == hci_stack->last_cmd_opcode){ 2419 if (status){ 2420 command_completed = true; 2421 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2422 } else { 2423 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2424 } 2425 } else { 2426 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2427 } 2428 } 2429 #ifndef HAVE_HOST_CONTROLLER_API 2430 // Vendor == CSR 2431 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2432 // TODO: track actual command 2433 command_completed = true; 2434 } 2435 2436 // Vendor == Toshiba 2437 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2438 // TODO: track actual command 2439 command_completed = true; 2440 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2441 hci_stack->num_cmd_packets = 1; 2442 } 2443 #endif 2444 2445 return command_completed; 2446 } 2447 2448 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2449 2450 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2451 2452 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2453 2454 #ifndef HAVE_HOST_CONTROLLER_API 2455 2456 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2457 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2458 // 2459 // HCI Reset 2460 // Timeout 100 ms 2461 // HCI Reset 2462 // Command Complete Reset 2463 // HCI Read Local Version Information 2464 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2465 // hang... 2466 // 2467 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2468 if (!command_completed 2469 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2470 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2471 2472 uint16_t opcode = little_endian_read_16(packet,3); 2473 if (opcode == hci_reset.opcode){ 2474 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2475 return; 2476 } 2477 } 2478 2479 // CSR & H5 2480 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2481 if (!command_completed 2482 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2483 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2484 2485 uint16_t opcode = little_endian_read_16(packet,3); 2486 if (opcode == hci_reset.opcode){ 2487 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2488 return; 2489 } 2490 } 2491 2492 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2493 // fix: Correct substate and behave as command below 2494 if (command_completed){ 2495 switch (hci_stack->substate){ 2496 case HCI_INIT_SEND_RESET: 2497 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2498 break; 2499 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2500 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2501 break; 2502 default: 2503 break; 2504 } 2505 } 2506 2507 #endif 2508 2509 if (!command_completed) return; 2510 2511 bool need_baud_change = false; 2512 bool need_addr_change = false; 2513 2514 #ifndef HAVE_HOST_CONTROLLER_API 2515 need_baud_change = hci_stack->config 2516 && hci_stack->chipset 2517 && hci_stack->chipset->set_baudrate_command 2518 && hci_stack->hci_transport->set_baudrate 2519 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2520 2521 need_addr_change = hci_stack->custom_bd_addr_set 2522 && hci_stack->chipset 2523 && hci_stack->chipset->set_bd_addr_command; 2524 #endif 2525 2526 switch(hci_stack->substate){ 2527 2528 #ifndef HAVE_HOST_CONTROLLER_API 2529 case HCI_INIT_SEND_RESET: 2530 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2531 // fix: just correct substate and behave as command below 2532 2533 /* fall through */ 2534 #endif 2535 2536 case HCI_INIT_W4_SEND_RESET: 2537 btstack_run_loop_remove_timer(&hci_stack->timeout); 2538 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2539 return; 2540 2541 #ifndef HAVE_HOST_CONTROLLER_API 2542 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2543 // for STLC2500D, baud rate change already happened. 2544 // for others, baud rate gets changed now 2545 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2546 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2547 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2548 hci_stack->hci_transport->set_baudrate(baud_rate); 2549 } 2550 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2551 return; 2552 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2553 btstack_run_loop_remove_timer(&hci_stack->timeout); 2554 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2555 return; 2556 case HCI_INIT_W4_CUSTOM_INIT: 2557 // repeat custom init 2558 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2559 return; 2560 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2561 // repeat custom init 2562 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2563 return; 2564 #endif 2565 2566 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2567 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2568 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2569 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2570 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2571 return; 2572 } 2573 if (need_addr_change){ 2574 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2575 return; 2576 } 2577 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2578 return; 2579 #ifndef HAVE_HOST_CONTROLLER_API 2580 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2581 if (need_baud_change){ 2582 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2583 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2584 hci_stack->hci_transport->set_baudrate(baud_rate); 2585 } 2586 if (need_addr_change){ 2587 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2588 return; 2589 } 2590 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2591 return; 2592 case HCI_INIT_W4_SET_BD_ADDR: 2593 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2594 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2595 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2596 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2597 return; 2598 } 2599 // skipping st warm boot 2600 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2601 return; 2602 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2603 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2604 return; 2605 #endif 2606 2607 case HCI_INIT_DONE: 2608 // set state if we came here by fall through 2609 hci_stack->substate = HCI_INIT_DONE; 2610 return; 2611 2612 default: 2613 break; 2614 } 2615 hci_initializing_next_state(); 2616 } 2617 2618 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2619 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2620 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2621 // check if we have been aware of the HCI connection 2622 switch (conn->state){ 2623 case SENT_CREATE_CONNECTION: 2624 case RECEIVED_CONNECTION_REQUEST: 2625 case ACCEPTED_CONNECTION_REQUEST: 2626 break; 2627 default: 2628 return; 2629 } 2630 2631 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2632 bd_addr_t bd_address; 2633 (void)memcpy(&bd_address, conn->address, 6); 2634 2635 #ifdef ENABLE_CLASSIC 2636 // cache needed data 2637 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2638 #endif 2639 2640 // connection failed, remove entry 2641 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2642 btstack_memory_hci_connection_free( conn ); 2643 2644 #ifdef ENABLE_CLASSIC 2645 // notify client if dedicated bonding 2646 if (notify_dedicated_bonding_failed){ 2647 log_info("hci notify_dedicated_bonding_failed"); 2648 hci_emit_dedicated_bonding_result(bd_address, status); 2649 } 2650 2651 // if authentication error, also delete link key 2652 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2653 gap_drop_link_key_for_bd_addr(bd_address); 2654 } 2655 #else 2656 UNUSED(status); 2657 #endif 2658 } 2659 2660 #ifdef ENABLE_CLASSIC 2661 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2662 // SSP Controller 2663 if (features[6] & (1 << 3)){ 2664 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2665 } 2666 // eSCO 2667 if (features[3] & (1<<7)){ 2668 conn->remote_supported_features[0] |= 1; 2669 } 2670 // Extended features 2671 if (features[7] & (1<<7)){ 2672 conn->remote_supported_features[0] |= 2; 2673 } 2674 // SCO packet types 2675 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2676 } 2677 2678 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2679 // SSP Host 2680 if (features[0] & (1 << 0)){ 2681 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2682 } 2683 // SC Host 2684 if (features[0] & (1 << 3)){ 2685 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2686 } 2687 } 2688 2689 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2690 // SC Controller 2691 if (features[1] & (1 << 0)){ 2692 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2693 } 2694 } 2695 2696 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2697 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2698 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2699 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2700 if (conn->bonding_flags & BONDING_DEDICATED){ 2701 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2702 } 2703 } 2704 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2705 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2706 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2707 } 2708 2709 #endif 2710 2711 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2712 // handle BT initialization 2713 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2714 hci_initializing_event_handler(packet, size); 2715 } 2716 2717 // help with BT sleep 2718 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2719 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2720 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2721 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2722 hci_initializing_next_state(); 2723 } 2724 } 2725 2726 #ifdef ENABLE_CLASSIC 2727 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2728 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2729 conn->requested_security_level = LEVEL_0; 2730 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2731 hci_emit_security_level(conn->con_handle, security_level); 2732 2733 // dedicated bonding 2734 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2735 conn->bonding_flags &= ~BONDING_DEDICATED; 2736 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2737 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2738 // emit dedicated bonding complete, don't disconnect 2739 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2740 #else 2741 // request disconnect, event is emitted after disconnect 2742 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2743 #endif 2744 } 2745 } 2746 2747 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2748 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2749 conn->encryption_key_size = encryption_key_size; 2750 2751 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2752 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2753 hci_handle_mutual_authentication_completed(conn); 2754 } else { 2755 // otherwise trigger remote feature request and send authentication request 2756 hci_trigger_remote_features_for_connection(conn); 2757 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2758 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2759 } 2760 } 2761 } 2762 #endif 2763 2764 static void hci_store_local_supported_commands(const uint8_t * packet){ 2765 // create mapping table 2766 #define X(name, offset, bit) { offset, bit }, 2767 static struct { 2768 uint8_t byte_offset; 2769 uint8_t bit_position; 2770 } supported_hci_commands_map [] = { 2771 SUPPORTED_HCI_COMMANDS 2772 }; 2773 #undef X 2774 2775 // create names for debug purposes 2776 #ifdef ENABLE_LOG_DEBUG 2777 #define X(name, offset, bit) #name, 2778 static const char * command_names[] = { 2779 SUPPORTED_HCI_COMMANDS 2780 }; 2781 #undef X 2782 #endif 2783 2784 hci_stack->local_supported_commands = 0; 2785 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2786 uint16_t i; 2787 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2788 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2789 #ifdef ENABLE_LOG_DEBUG 2790 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); 2791 #else 2792 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2793 #endif 2794 hci_stack->local_supported_commands |= (1LU << i); 2795 } 2796 } 2797 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2798 } 2799 2800 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2801 UNUSED(size); 2802 2803 uint8_t status = 0; 2804 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2805 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2806 } 2807 uint16_t manufacturer; 2808 #ifdef ENABLE_CLASSIC 2809 hci_connection_t * conn; 2810 #endif 2811 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2812 hci_con_handle_t handle; 2813 #endif 2814 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2815 le_audio_cig_t * cig; 2816 #endif 2817 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2818 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2819 #endif 2820 2821 // get num cmd packets - limit to 1 to reduce complexity 2822 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2823 2824 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2825 switch (opcode){ 2826 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2827 if (status) break; 2828 // terminate, name 248 chars 2829 packet[6+248] = 0; 2830 log_info("local name: %s", &packet[6]); 2831 break; 2832 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2833 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2834 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2835 uint16_t acl_len = little_endian_read_16(packet, 6); 2836 uint16_t sco_len = packet[8]; 2837 2838 // determine usable ACL/SCO payload size 2839 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2840 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2841 2842 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2843 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2844 2845 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2846 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2847 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2848 } 2849 break; 2850 case HCI_OPCODE_HCI_READ_RSSI: 2851 if (status == ERROR_CODE_SUCCESS){ 2852 uint8_t event[5]; 2853 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2854 event[1] = 3; 2855 (void)memcpy(&event[2], &packet[6], 3); 2856 hci_emit_event(event, sizeof(event), 1); 2857 } 2858 break; 2859 #ifdef ENABLE_BLE 2860 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2861 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2862 hci_stack->le_iso_packets_total_num = packet[11]; 2863 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2864 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2865 2866 /* fall through */ 2867 2868 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2869 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2870 hci_stack->le_acl_packets_total_num = packet[8]; 2871 // determine usable ACL payload size 2872 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2873 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2874 } 2875 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); 2876 break; 2877 #endif 2878 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2879 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2880 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2881 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2882 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); 2883 break; 2884 #endif 2885 #ifdef ENABLE_LE_CENTRAL 2886 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2887 hci_stack->le_whitelist_capacity = packet[6]; 2888 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2889 break; 2890 #endif 2891 #ifdef ENABLE_LE_PERIPHERAL 2892 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2893 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2894 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2895 break; 2896 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2897 if (hci_stack->le_advertising_set_in_current_command != 0) { 2898 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2899 hci_stack->le_advertising_set_in_current_command = 0; 2900 if (advertising_set == NULL) break; 2901 uint8_t adv_status = packet[6]; 2902 uint8_t tx_power = packet[7]; 2903 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 }; 2904 if (adv_status == 0){ 2905 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2906 } 2907 hci_emit_event(event, sizeof(event), 1); 2908 } 2909 break; 2910 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2911 if (hci_stack->le_advertising_set_in_current_command != 0) { 2912 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2913 hci_stack->le_advertising_set_in_current_command = 0; 2914 if (advertising_set == NULL) break; 2915 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2916 if (status == 0){ 2917 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2918 } 2919 hci_emit_event(event, sizeof(event), 1); 2920 } 2921 break; 2922 #endif 2923 #endif 2924 case HCI_OPCODE_HCI_READ_BD_ADDR: 2925 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2926 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2927 #ifdef ENABLE_CLASSIC 2928 if (hci_stack->link_key_db){ 2929 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2930 } 2931 #endif 2932 break; 2933 #ifdef ENABLE_CLASSIC 2934 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2935 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2936 break; 2937 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2938 if (status == ERROR_CODE_SUCCESS) { 2939 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2940 } else { 2941 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2942 } 2943 break; 2944 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2945 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2946 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2947 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2948 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2949 hci_emit_event(event, sizeof(event), 1); 2950 } 2951 break; 2952 #endif 2953 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2954 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2955 2956 #ifdef ENABLE_CLASSIC 2957 // determine usable ACL packet types based on host buffer size and supported features 2958 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]); 2959 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2960 // determine usable SCO packet types based on supported features 2961 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2962 &hci_stack->local_supported_features[0]); 2963 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2964 #endif 2965 // Classic/LE 2966 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2967 break; 2968 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2969 manufacturer = little_endian_read_16(packet, 10); 2970 // map Cypress & Infineon to Broadcom 2971 switch (manufacturer){ 2972 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2973 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2974 log_info("Treat Cypress/Infineon as Broadcom"); 2975 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2976 little_endian_store_16(packet, 10, manufacturer); 2977 break; 2978 default: 2979 break; 2980 } 2981 hci_stack->manufacturer = manufacturer; 2982 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2983 break; 2984 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2985 hci_store_local_supported_commands(packet); 2986 break; 2987 #ifdef ENABLE_CLASSIC 2988 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2989 if (status) return; 2990 hci_stack->synchronous_flow_control_enabled = 1; 2991 break; 2992 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2993 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2994 conn = hci_connection_for_handle(handle); 2995 if (conn != NULL) { 2996 uint8_t key_size = 0; 2997 if (status == 0){ 2998 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2999 log_info("Handle %04x key Size: %u", handle, key_size); 3000 } else { 3001 key_size = 1; 3002 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3003 } 3004 hci_handle_read_encryption_key_size_complete(conn, key_size); 3005 } 3006 break; 3007 // assert pairing complete event is emitted. 3008 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3009 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3010 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3011 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3012 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3013 // lookup connection by gap pairing addr 3014 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3015 if (conn == NULL) break; 3016 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3017 break; 3018 3019 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3020 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3021 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3022 uint8_t event[67]; 3023 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3024 event[1] = 65; 3025 (void)memset(&event[2], 0, 65); 3026 if (status == ERROR_CODE_SUCCESS){ 3027 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3028 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3029 event[2] = 3; 3030 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3031 } else { 3032 event[2] = 1; 3033 } 3034 } 3035 hci_emit_event(event, sizeof(event), 0); 3036 break; 3037 } 3038 3039 // note: only needed if user does not provide OOB data 3040 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3041 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3042 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3043 if (conn == NULL) break; 3044 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3045 break; 3046 #endif 3047 #endif 3048 #ifdef ENABLE_BLE 3049 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3050 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3051 // lookup CIG 3052 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3053 if (cig != NULL){ 3054 uint8_t i = 0; 3055 if (status == ERROR_CODE_SUCCESS){ 3056 // assign CIS handles to pre-allocated CIS 3057 btstack_linked_list_iterator_t it; 3058 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3059 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3060 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3061 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3062 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3063 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3064 iso_stream->cis_handle = cis_handle; 3065 cig->cis_con_handles[i] = cis_handle; 3066 i++; 3067 } 3068 } 3069 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3070 hci_emit_cig_created(cig, status); 3071 } else { 3072 hci_emit_cig_created(cig, status); 3073 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3074 } 3075 } 3076 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3077 break; 3078 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3079 if (status != ERROR_CODE_SUCCESS){ 3080 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3081 } 3082 break; 3083 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3084 if (status != ERROR_CODE_SUCCESS){ 3085 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3086 } 3087 break; 3088 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3089 // lookup BIG by state 3090 btstack_linked_list_iterator_t it; 3091 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3092 while (btstack_linked_list_iterator_has_next(&it)) { 3093 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3094 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3095 if (status == ERROR_CODE_SUCCESS){ 3096 big->state_vars.next_bis++; 3097 if (big->state_vars.next_bis == big->num_bis){ 3098 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3099 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3100 } else { 3101 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3102 } 3103 } else { 3104 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3105 big->state_vars.status = status; 3106 } 3107 return; 3108 } 3109 } 3110 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3111 while (btstack_linked_list_iterator_has_next(&it)) { 3112 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3113 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3114 if (status == ERROR_CODE_SUCCESS){ 3115 big_sync->state_vars.next_bis++; 3116 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3117 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3118 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3119 } else { 3120 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3121 } 3122 } else { 3123 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3124 big_sync->state_vars.status = status; 3125 } 3126 return; 3127 } 3128 } 3129 // Lookup CIS via active group operation 3130 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3131 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3132 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3133 3134 // lookup CIS by state 3135 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3136 while (btstack_linked_list_iterator_has_next(&it)){ 3137 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3138 handle = iso_stream->cis_handle; 3139 bool emit_cis_created = false; 3140 switch (iso_stream->state){ 3141 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3142 if (status != ERROR_CODE_SUCCESS){ 3143 emit_cis_created = true; 3144 break; 3145 } 3146 if (iso_stream->max_sdu_c_to_p > 0){ 3147 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3148 } else { 3149 emit_cis_created = true; 3150 } 3151 break; 3152 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3153 emit_cis_created = true; 3154 break; 3155 default: 3156 break; 3157 } 3158 if (emit_cis_created){ 3159 hci_cis_handle_created(iso_stream, status); 3160 } 3161 } 3162 } else { 3163 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3164 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3165 if (cig != NULL) { 3166 // emit cis created if all ISO Paths have been created 3167 // assume we are central 3168 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3169 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3170 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3171 // if outgoing has been setup, or incoming was setup but outgoing not required 3172 if ((cis_direction == 1) || (outgoing_needed == false)){ 3173 // lookup iso stream by cig/cis 3174 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3175 while (btstack_linked_list_iterator_has_next(&it)) { 3176 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3177 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3178 hci_cis_handle_created(iso_stream, status); 3179 } 3180 } 3181 } 3182 // next state 3183 cig->state_vars.next_cis++; 3184 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3185 } 3186 } 3187 } 3188 break; 3189 } 3190 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3191 // lookup BIG by state 3192 btstack_linked_list_iterator_t it; 3193 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3194 while (btstack_linked_list_iterator_has_next(&it)) { 3195 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3196 uint8_t big_handle = big_sync->big_handle; 3197 switch (big_sync->state){ 3198 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3199 btstack_linked_list_iterator_remove(&it); 3200 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3201 return; 3202 default: 3203 btstack_linked_list_iterator_remove(&it); 3204 hci_emit_big_sync_stopped(big_handle); 3205 return; 3206 } 3207 } 3208 break; 3209 } 3210 #endif 3211 #endif 3212 default: 3213 break; 3214 } 3215 } 3216 3217 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3218 UNUSED(size); 3219 3220 // get num cmd packets - limit to 1 to reduce complexity 3221 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3222 3223 // get opcode and command status 3224 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3225 3226 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3227 uint8_t status = hci_event_command_status_get_status(packet); 3228 #endif 3229 3230 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3231 bd_addr_type_t addr_type; 3232 bd_addr_t addr; 3233 #endif 3234 3235 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3236 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3237 #endif 3238 3239 switch (opcode){ 3240 #ifdef ENABLE_CLASSIC 3241 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3242 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3243 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3244 #endif 3245 #ifdef ENABLE_LE_CENTRAL 3246 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3247 #endif 3248 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3249 addr_type = hci_stack->outgoing_addr_type; 3250 memcpy(addr, hci_stack->outgoing_addr, 6); 3251 3252 // reset outgoing address info 3253 memset(hci_stack->outgoing_addr, 0, 6); 3254 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3255 3256 // on error 3257 if (status != ERROR_CODE_SUCCESS){ 3258 #ifdef ENABLE_LE_CENTRAL 3259 if (hci_is_le_connection_type(addr_type)){ 3260 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3261 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3262 } 3263 #endif 3264 // error => outgoing connection failed 3265 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3266 if (conn != NULL){ 3267 hci_handle_connection_failed(conn, status); 3268 } 3269 } 3270 break; 3271 #endif 3272 #ifdef ENABLE_CLASSIC 3273 case HCI_OPCODE_HCI_INQUIRY: 3274 if (status == ERROR_CODE_SUCCESS) { 3275 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3276 } else { 3277 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3278 } 3279 break; 3280 #endif 3281 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3282 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3283 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3284 if (status == ERROR_CODE_SUCCESS){ 3285 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3286 } else { 3287 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3288 } 3289 break; 3290 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3291 default: 3292 break; 3293 } 3294 } 3295 3296 #ifdef ENABLE_BLE 3297 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3298 gap_event[0] = HCI_EVENT_META_GAP; 3299 gap_event[1] = 36 - 2; 3300 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3301 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3302 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3303 memcpy(&gap_event[3], &hci_event[3], 11); 3304 memset(&gap_event[14], 0, 12); 3305 memcpy(&gap_event[26], &hci_event[14], 7); 3306 memset(&gap_event[33], 0xff, 3); 3307 break; 3308 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3309 memcpy(&gap_event[3], &hci_event[3], 30); 3310 memset(&gap_event[33], 0xff, 3); 3311 break; 3312 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3313 memcpy(&gap_event[3], &hci_event[3], 33); 3314 break; 3315 default: 3316 btstack_unreachable(); 3317 break; 3318 } 3319 } 3320 3321 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3322 bd_addr_t addr; 3323 bd_addr_type_t addr_type; 3324 hci_connection_t * conn; 3325 3326 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3327 uint8_t gap_event[36]; 3328 hci_create_gap_connection_complete_event(hci_event, gap_event); 3329 3330 // read fields 3331 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3332 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3333 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3334 3335 // Connection management 3336 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3337 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3338 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3339 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3340 3341 #ifdef ENABLE_LE_CENTRAL 3342 // handle error: error is reported only to the initiator -> outgoing connection 3343 if (status){ 3344 3345 // handle cancelled outgoing connection 3346 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3347 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3348 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3349 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3350 // reset state 3351 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3352 // get outgoing connection conn struct for direct connect 3353 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3354 conn = gap_get_outgoing_le_connection(); 3355 conn->state = SEND_CREATE_CONNECTION; 3356 } 3357 } 3358 3359 // free connection if cancelled by user (request == IDLE) 3360 if ((conn != NULL) && (hci_stack->le_connecting_request == LE_CONNECTING_IDLE)){ 3361 // remove entry 3362 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3363 btstack_memory_hci_connection_free( conn ); 3364 } 3365 3366 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE for error case 3367 hci_emit_event(gap_event, sizeof(gap_event), 1); 3368 return; 3369 } 3370 #endif 3371 3372 // on success, both hosts receive connection complete event 3373 if (role == HCI_ROLE_MASTER){ 3374 #ifdef ENABLE_LE_CENTRAL 3375 // if we're master, it was an outgoing connection 3376 // note: no hci_connection_t object exists yet for connect with whitelist 3377 3378 // if a identity addresses was used without enhanced connection complete event, 3379 // the connection complete event contains the current random address of the peer device. 3380 // This random address is needed in the case of a re-pairing 3381 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3382 conn = gap_get_outgoing_le_connection(); 3383 // if outgoing connection object is available, check if identity address was used. 3384 // if yes, track resolved random address and provide rpa 3385 // note: we don't update hci le subevent connection complete 3386 if (conn != NULL){ 3387 if (hci_is_le_identity_address_type(conn->address_type)){ 3388 memcpy(&gap_event[20], &gap_event[8], 6); 3389 gap_event[7] = conn->address_type; 3390 reverse_bd_addr(conn->address, &gap_event[8]); 3391 } 3392 } 3393 } 3394 3395 // we're done with it 3396 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3397 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3398 #endif 3399 } else { 3400 #ifdef ENABLE_LE_PERIPHERAL 3401 // if we're slave, it was an incoming connection, advertisements have stopped 3402 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3403 #endif 3404 } 3405 3406 // LE connections are auto-accepted, so just create a connection if there isn't one already 3407 if (!conn){ 3408 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3409 } 3410 3411 // no memory, sorry. 3412 if (!conn){ 3413 return; 3414 } 3415 3416 conn->state = OPEN; 3417 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3418 conn->le_connection_interval = conn_interval; 3419 3420 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3421 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3422 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES)){ 3423 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3424 } 3425 #endif 3426 3427 #ifdef ENABLE_LE_PERIPHERAL 3428 if (role == HCI_ROLE_SLAVE){ 3429 hci_update_advertisements_enabled_for_current_roles(); 3430 } 3431 #endif 3432 3433 // init unenhanced att bearer mtu 3434 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3435 conn->att_connection.mtu_exchanged = false; 3436 3437 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3438 3439 // restart timer 3440 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3441 // btstack_run_loop_add_timer(&conn->timeout); 3442 3443 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3444 3445 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3446 hci_emit_event(gap_event, sizeof(gap_event), 1); 3447 3448 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3449 hci_emit_nr_connections_changed(); 3450 } 3451 #endif 3452 3453 #ifdef ENABLE_CLASSIC 3454 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){ 3455 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3456 // LEVEL_4 is tested by l2cap 3457 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3458 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3459 if (level >= LEVEL_3){ 3460 // MITM not possible without keyboard or display 3461 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3462 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3463 3464 // MITM possible if one side has keyboard and the other has keyboard or display 3465 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3466 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3467 3468 // MITM not possible if one side has only display and other side has no keyboard 3469 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3470 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3471 } 3472 // LEVEL 2 requires SSP, which is a given 3473 return true; 3474 } 3475 3476 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3477 // get requested security level 3478 gap_security_level_t requested_security_level = conn->requested_security_level; 3479 if (hci_stack->gap_secure_connections_only_mode){ 3480 requested_security_level = LEVEL_4; 3481 } 3482 3483 // assess security: LEVEL 4 requires SC 3484 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3485 if ((requested_security_level == LEVEL_4) && 3486 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3487 !hci_remote_sc_enabled(conn)){ 3488 log_info("Level 4 required, but SC not supported -> abort"); 3489 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3490 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3491 return; 3492 } 3493 3494 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3495 // - GAP/MOD/NBON/BV-02-C 3496 // - GAP/DM/NBON/BV-01-C 3497 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3498 switch (conn->io_cap_response_auth_req){ 3499 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3500 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3501 if (hci_stack->bondable == false){ 3502 log_info("Dedicated vs. non-bondable -> abort"); 3503 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3504 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3505 return; 3506 } 3507 default: 3508 break; 3509 } 3510 } 3511 3512 // assess security based on io capabilities 3513 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3514 // responder: fully validate io caps of both sides as well as OOB data 3515 bool security_possible = false; 3516 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3517 3518 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3519 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3520 // so we merge the OOB data availability 3521 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3522 if (conn->classic_oob_c_192 != NULL){ 3523 have_oob_data |= 1; 3524 } 3525 if (conn->classic_oob_c_256 != NULL){ 3526 have_oob_data |= 2; 3527 } 3528 // for up to Level 3, either P-192 as well as P-256 will do 3529 // 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 3530 // if remote does not SC, we should not receive P-256 data either 3531 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3532 security_possible = true; 3533 } 3534 // for Level 4, P-256 is needed 3535 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3536 security_possible = true; 3537 } 3538 #endif 3539 3540 if (security_possible == false){ 3541 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3542 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3543 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3544 return; 3545 } 3546 } else { 3547 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3548 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3549 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3550 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3551 log_info("Level 3+ required, but no input/output -> abort"); 3552 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3553 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3554 return; 3555 } 3556 #endif 3557 #endif 3558 } 3559 3560 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3561 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3562 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3563 } else { 3564 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3565 } 3566 #endif 3567 } 3568 3569 #endif 3570 3571 static void event_handler(uint8_t *packet, uint16_t size){ 3572 3573 uint16_t event_length = packet[1]; 3574 3575 // assert packet is complete 3576 if (size != (event_length + 2u)){ 3577 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3578 return; 3579 } 3580 3581 hci_con_handle_t handle; 3582 hci_connection_t * conn; 3583 int i; 3584 3585 #ifdef ENABLE_CLASSIC 3586 hci_link_type_t link_type; 3587 bd_addr_t addr; 3588 bd_addr_type_t addr_type; 3589 #endif 3590 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3591 hci_iso_stream_t * iso_stream; 3592 le_audio_big_t * big; 3593 le_audio_big_sync_t * big_sync; 3594 #endif 3595 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3596 btstack_linked_list_iterator_t it; 3597 #endif 3598 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3599 uint8_t advertising_handle; 3600 #endif 3601 3602 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3603 3604 switch (hci_event_packet_get_type(packet)) { 3605 3606 case HCI_EVENT_COMMAND_COMPLETE: 3607 handle_command_complete_event(packet, size); 3608 break; 3609 3610 case HCI_EVENT_COMMAND_STATUS: 3611 handle_command_status_event(packet, size); 3612 break; 3613 3614 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3615 if (size < 3) return; 3616 uint16_t num_handles = packet[2]; 3617 if (size != (3u + num_handles * 4u)) return; 3618 #ifdef ENABLE_CLASSIC 3619 bool notify_sco = false; 3620 #endif 3621 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3622 bool notify_iso = false; 3623 #endif 3624 uint16_t offset = 3; 3625 for (i=0; i<num_handles;i++){ 3626 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3627 offset += 2u; 3628 uint16_t num_packets = little_endian_read_16(packet, offset); 3629 offset += 2u; 3630 3631 conn = hci_connection_for_handle(handle); 3632 if (conn != NULL) { 3633 3634 if (conn->num_packets_sent >= num_packets) { 3635 conn->num_packets_sent -= num_packets; 3636 } else { 3637 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3638 conn->num_packets_sent = 0; 3639 } 3640 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3641 #ifdef ENABLE_CLASSIC 3642 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3643 notify_sco = true; 3644 } 3645 #endif 3646 } 3647 3648 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3649 hci_controller_dump_packets(); 3650 #endif 3651 3652 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3653 if (conn == NULL){ 3654 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3655 if (iso_stream != NULL){ 3656 if (iso_stream->num_packets_sent >= num_packets) { 3657 iso_stream->num_packets_sent -= num_packets; 3658 } else { 3659 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3660 iso_stream->num_packets_sent = 0; 3661 } 3662 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3663 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3664 if (big != NULL){ 3665 big->num_completed_timestamp_current_valid = true; 3666 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3667 } 3668 } 3669 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3670 num_packets, handle, iso_stream->num_packets_sent); 3671 notify_iso = true; 3672 } 3673 } 3674 #endif 3675 } 3676 3677 #ifdef ENABLE_CLASSIC 3678 if (notify_sco){ 3679 hci_notify_if_sco_can_send_now(); 3680 } 3681 #endif 3682 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3683 if (notify_iso){ 3684 hci_iso_notify_can_send_now(); 3685 } 3686 #endif 3687 break; 3688 } 3689 3690 #ifdef ENABLE_CLASSIC 3691 case HCI_EVENT_FLUSH_OCCURRED: 3692 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3693 handle = hci_event_flush_occurred_get_handle(packet); 3694 conn = hci_connection_for_handle(handle); 3695 if (conn) { 3696 log_info("Flush occurred, disconnect 0x%04x", handle); 3697 conn->state = SEND_DISCONNECT; 3698 } 3699 break; 3700 3701 case HCI_EVENT_INQUIRY_COMPLETE: 3702 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3703 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3704 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3705 hci_emit_event(event, sizeof(event), 1); 3706 } 3707 break; 3708 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3709 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3710 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3711 } 3712 break; 3713 case HCI_EVENT_CONNECTION_REQUEST: 3714 reverse_bd_addr(&packet[2], addr); 3715 link_type = (hci_link_type_t) packet[11]; 3716 3717 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3718 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3719 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3720 bd_addr_copy(hci_stack->decline_addr, addr); 3721 break; 3722 } 3723 3724 if (hci_stack->gap_classic_accept_callback != NULL){ 3725 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3726 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3727 bd_addr_copy(hci_stack->decline_addr, addr); 3728 break; 3729 } 3730 } 3731 3732 // TODO: eval COD 8-10 3733 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3734 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3735 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3736 if (!conn) { 3737 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3738 } 3739 if (!conn) { 3740 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3741 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3742 bd_addr_copy(hci_stack->decline_addr, addr); 3743 hci_run(); 3744 // avoid event to higher layer 3745 return; 3746 } 3747 conn->state = RECEIVED_CONNECTION_REQUEST; 3748 // store info about eSCO 3749 if (link_type == HCI_LINK_TYPE_ESCO){ 3750 conn->remote_supported_features[0] |= 1; 3751 } 3752 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3753 if (addr_type == BD_ADDR_TYPE_SCO){ 3754 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3755 // ACL exists unless fuzzing 3756 if (acl_conn != NULL) { 3757 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3758 } 3759 } 3760 hci_run(); 3761 break; 3762 3763 case HCI_EVENT_CONNECTION_COMPLETE: 3764 // Connection management 3765 reverse_bd_addr(&packet[5], addr); 3766 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3767 addr_type = BD_ADDR_TYPE_ACL; 3768 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3769 if (conn) { 3770 switch (conn->state){ 3771 // expected states 3772 case ACCEPTED_CONNECTION_REQUEST: 3773 case SENT_CREATE_CONNECTION: 3774 break; 3775 // unexpected state -> ignore 3776 default: 3777 // don't forward event to app 3778 return; 3779 } 3780 if (!packet[2]){ 3781 conn->state = OPEN; 3782 conn->con_handle = little_endian_read_16(packet, 3); 3783 3784 // trigger write supervision timeout if we're master 3785 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3786 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3787 } 3788 3789 // trigger write automatic flush timeout 3790 if (hci_stack->automatic_flush_timeout != 0){ 3791 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3792 } 3793 3794 // restart timer 3795 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3796 btstack_run_loop_add_timer(&conn->timeout); 3797 3798 // trigger remote features for dedicated bonding 3799 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3800 hci_trigger_remote_features_for_connection(conn); 3801 } 3802 3803 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3804 3805 hci_emit_nr_connections_changed(); 3806 } else { 3807 // connection failed 3808 hci_handle_connection_failed(conn, packet[2]); 3809 } 3810 } 3811 break; 3812 3813 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3814 reverse_bd_addr(&packet[5], addr); 3815 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3816 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3817 3818 // SCO exists unless fuzzer 3819 if (conn == NULL) break; 3820 3821 if (packet[2] != ERROR_CODE_SUCCESS){ 3822 // connection failed, remove entry 3823 hci_handle_connection_failed(conn, packet[2]); 3824 break; 3825 } 3826 3827 conn->state = OPEN; 3828 conn->con_handle = little_endian_read_16(packet, 3); 3829 3830 // update sco payload length for eSCO connections 3831 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3832 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3833 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3834 } 3835 3836 #ifdef ENABLE_SCO_OVER_HCI 3837 // update SCO 3838 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3839 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3840 } 3841 // trigger can send now 3842 if (hci_have_usb_transport()){ 3843 hci_stack->sco_can_send_now = true; 3844 } 3845 3846 // setup implict sco flow control 3847 conn->sco_tx_ready = 0; 3848 conn->sco_tx_active = 0; 3849 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3850 3851 #endif 3852 #ifdef HAVE_SCO_TRANSPORT 3853 // configure sco transport 3854 if (hci_stack->sco_transport != NULL){ 3855 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3856 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3857 } 3858 #endif 3859 break; 3860 3861 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3862 handle = little_endian_read_16(packet, 3); 3863 conn = hci_connection_for_handle(handle); 3864 if (!conn) break; 3865 if (!packet[2]){ 3866 const uint8_t * features = &packet[5]; 3867 hci_handle_remote_features_page_0(conn, features); 3868 3869 // read extended features if possible 3870 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3871 && ((conn->remote_supported_features[0] & 2) != 0)) { 3872 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3873 break; 3874 } 3875 } 3876 hci_handle_remote_features_received(conn); 3877 break; 3878 3879 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3880 handle = little_endian_read_16(packet, 3); 3881 conn = hci_connection_for_handle(handle); 3882 if (!conn) break; 3883 // status = ok, page = 1 3884 if (!packet[2]) { 3885 uint8_t page_number = packet[5]; 3886 uint8_t maximum_page_number = packet[6]; 3887 const uint8_t * features = &packet[7]; 3888 bool done = false; 3889 switch (page_number){ 3890 case 1: 3891 hci_handle_remote_features_page_1(conn, features); 3892 if (maximum_page_number >= 2){ 3893 // get Secure Connections (Controller) from Page 2 if available 3894 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3895 } else { 3896 // otherwise, assume SC (Controller) == SC (Host) 3897 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3898 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3899 } 3900 done = true; 3901 } 3902 break; 3903 case 2: 3904 hci_handle_remote_features_page_2(conn, features); 3905 done = true; 3906 break; 3907 default: 3908 break; 3909 } 3910 if (!done) break; 3911 } 3912 hci_handle_remote_features_received(conn); 3913 break; 3914 3915 case HCI_EVENT_LINK_KEY_REQUEST: 3916 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3917 hci_event_link_key_request_get_bd_addr(packet, addr); 3918 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3919 if (!conn) break; 3920 3921 // lookup link key in db if not cached 3922 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3923 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3924 } 3925 3926 // response sent by hci_run() 3927 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3928 #endif 3929 break; 3930 3931 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3932 hci_event_link_key_request_get_bd_addr(packet, addr); 3933 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3934 if (!conn) break; 3935 3936 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3937 3938 // CVE-2020-26555: ignore NULL link key 3939 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3940 if (btstack_is_null(&packet[8], 16)) break; 3941 3942 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3943 // Change Connection Encryption keeps link key type 3944 if (link_key_type != CHANGED_COMBINATION_KEY){ 3945 conn->link_key_type = link_key_type; 3946 } 3947 3948 // cache link key. link keys stored in little-endian format for legacy reasons 3949 memcpy(&conn->link_key, &packet[8], 16); 3950 3951 // only store link key: 3952 // - if bondable enabled 3953 if (hci_stack->bondable == false) break; 3954 // - if security level sufficient 3955 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3956 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3957 break; 3958 } 3959 3960 case HCI_EVENT_PIN_CODE_REQUEST: 3961 hci_event_pin_code_request_get_bd_addr(packet, addr); 3962 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3963 if (!conn) break; 3964 3965 hci_pairing_started(conn, false); 3966 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3967 if (!hci_stack->bondable ){ 3968 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3969 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3970 hci_run(); 3971 return; 3972 } 3973 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3974 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3975 log_info("Level 4 required, but SC not supported -> abort"); 3976 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3977 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3978 hci_run(); 3979 return; 3980 } 3981 break; 3982 3983 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3984 hci_event_io_capability_response_get_bd_addr(packet, addr); 3985 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3986 if (!conn) break; 3987 3988 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3989 hci_pairing_started(conn, true); 3990 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3991 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3992 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3993 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3994 #endif 3995 break; 3996 3997 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3998 hci_event_io_capability_response_get_bd_addr(packet, addr); 3999 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4000 if (!conn) break; 4001 4002 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 4003 hci_connection_timestamp(conn); 4004 hci_pairing_started(conn, true); 4005 break; 4006 4007 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4008 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4009 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4010 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4011 if (!conn) break; 4012 4013 hci_connection_timestamp(conn); 4014 4015 hci_pairing_started(conn, true); 4016 4017 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4018 break; 4019 #endif 4020 4021 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4022 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4023 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4024 if (!conn) break; 4025 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4026 if (hci_stack->ssp_auto_accept){ 4027 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4028 }; 4029 } else { 4030 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4031 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4032 // don't forward event to app 4033 hci_run(); 4034 return; 4035 } 4036 break; 4037 4038 case HCI_EVENT_USER_PASSKEY_REQUEST: 4039 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4040 if (hci_stack->ssp_auto_accept){ 4041 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4042 }; 4043 break; 4044 4045 case HCI_EVENT_MODE_CHANGE: 4046 handle = hci_event_mode_change_get_handle(packet); 4047 conn = hci_connection_for_handle(handle); 4048 if (!conn) break; 4049 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4050 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4051 break; 4052 #endif 4053 4054 case HCI_EVENT_ENCRYPTION_CHANGE: 4055 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4056 handle = hci_event_encryption_change_get_connection_handle(packet); 4057 conn = hci_connection_for_handle(handle); 4058 if (!conn) break; 4059 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4060 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4061 if (encryption_enabled){ 4062 if (hci_is_le_connection(conn)){ 4063 // For LE, we accept connection as encrypted 4064 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4065 } 4066 #ifdef ENABLE_CLASSIC 4067 else { 4068 4069 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4070 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4071 bool connected_uses_aes_ccm = encryption_enabled == 2; 4072 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4073 #ifdef ENABLE_TESTING_SUPPORT 4074 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4075 // - GAP/SEC/SEM/BI-31-C 4076 // - GAP/SEC/SEM/BI-32-C 4077 // - GAP/SEC/SEM/BI-33-C 4078 4079 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4080 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4081 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4082 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4083 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4084 } 4085 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4086 conn->link_key_type, new_link_key_type); 4087 conn->link_key_type = new_link_key_type; 4088 #else 4089 log_info("SC during pairing, but only E0 now -> abort"); 4090 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4091 break; 4092 #endif 4093 } 4094 4095 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4096 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4097 if (connected_uses_aes_ccm){ 4098 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4099 } 4100 #else 4101 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4102 // with encryption key size > hci_stack->gap_required_encyrption_key_size 4103 // for all operations that require any security. See BIAS attacks. 4104 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4105 #endif 4106 // validate encryption key size 4107 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4108 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4109 // already got encryption key size 4110 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4111 } else { 4112 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4113 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4114 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4115 } else { 4116 // if not, pretend everything is perfect 4117 hci_handle_read_encryption_key_size_complete(conn, 16); 4118 } 4119 } 4120 } 4121 #endif 4122 } else { 4123 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4124 } 4125 } else { 4126 #ifdef ENABLE_CLASSIC 4127 if (!hci_is_le_connection(conn)){ 4128 uint8_t status = hci_event_encryption_change_get_status(packet); 4129 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4130 conn->bonding_flags &= ~BONDING_DEDICATED; 4131 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4132 conn->bonding_status = status; 4133 } 4134 // trigger security update -> level 0 4135 hci_handle_mutual_authentication_completed(conn); 4136 } 4137 #endif 4138 } 4139 4140 break; 4141 4142 #ifdef ENABLE_CLASSIC 4143 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4144 handle = hci_event_authentication_complete_get_connection_handle(packet); 4145 conn = hci_connection_for_handle(handle); 4146 if (!conn) break; 4147 4148 // clear authentication active flag 4149 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4150 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4151 4152 // authenticated only if auth status == 0 4153 if (hci_event_authentication_complete_get_status(packet) == 0){ 4154 // authenticated 4155 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4156 4157 // If not already encrypted, start encryption 4158 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4159 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4160 break; 4161 } 4162 } 4163 4164 // emit updated security level (will be 0 if not authenticated) 4165 hci_handle_mutual_authentication_completed(conn); 4166 break; 4167 4168 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4169 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4170 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4171 if (!conn) break; 4172 4173 // treat successfully paired connection as authenticated 4174 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4175 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4176 } 4177 4178 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4179 break; 4180 #endif 4181 4182 // HCI_EVENT_DISCONNECTION_COMPLETE 4183 // has been split, to first notify stack before shutting connection down 4184 // see end of function, too. 4185 case HCI_EVENT_DISCONNECTION_COMPLETE: 4186 if (packet[2]) break; // status != 0 4187 handle = little_endian_read_16(packet, 3); 4188 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4189 if (hci_stack->acl_fragmentation_total_size > 0u) { 4190 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4191 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4192 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4193 hci_stack->acl_fragmentation_total_size = 0; 4194 hci_stack->acl_fragmentation_pos = 0; 4195 if (release_buffer){ 4196 hci_release_packet_buffer(); 4197 } 4198 } 4199 } 4200 4201 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4202 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4203 if (hci_stack->iso_fragmentation_total_size > 0u) { 4204 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4205 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4206 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4207 hci_stack->iso_fragmentation_total_size = 0; 4208 hci_stack->iso_fragmentation_pos = 0; 4209 if (release_buffer){ 4210 hci_release_packet_buffer(); 4211 } 4212 } 4213 } 4214 4215 // finalize iso stream for CIS handle 4216 iso_stream = hci_iso_stream_for_con_handle(handle); 4217 if (iso_stream != NULL){ 4218 hci_iso_stream_finalize(iso_stream); 4219 break; 4220 } 4221 4222 // finalize iso stream(s) for ACL handle 4223 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4224 while (btstack_linked_list_iterator_has_next(&it)){ 4225 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4226 if (iso_stream->acl_handle == handle ) { 4227 hci_iso_stream_finalize(iso_stream); 4228 } 4229 } 4230 #endif 4231 4232 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4233 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4234 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4235 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4236 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4237 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4238 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4239 hci_stack->num_cmd_packets = 1; 4240 } 4241 #endif 4242 4243 conn = hci_connection_for_handle(handle); 4244 if (!conn) break; 4245 #ifdef ENABLE_CLASSIC 4246 // pairing failed if it was ongoing 4247 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4248 #endif 4249 4250 // emit dedicatd bonding event 4251 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4252 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4253 } 4254 4255 // mark connection for shutdown, stop timers, reset state 4256 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4257 hci_connection_stop_timer(conn); 4258 hci_connection_init(conn); 4259 4260 #ifdef ENABLE_BLE 4261 #ifdef ENABLE_LE_PERIPHERAL 4262 // re-enable advertisements for le connections if active 4263 if (hci_is_le_connection(conn)){ 4264 hci_update_advertisements_enabled_for_current_roles(); 4265 } 4266 #endif 4267 #endif 4268 break; 4269 4270 case HCI_EVENT_HARDWARE_ERROR: 4271 log_error("Hardware Error: 0x%02x", packet[2]); 4272 if (hci_stack->hardware_error_callback){ 4273 (*hci_stack->hardware_error_callback)(packet[2]); 4274 } else { 4275 // if no special requests, just reboot stack 4276 hci_power_control_off(); 4277 hci_power_control_on(); 4278 } 4279 break; 4280 4281 #ifdef ENABLE_CLASSIC 4282 case HCI_EVENT_ROLE_CHANGE: 4283 if (packet[2]) break; // status != 0 4284 reverse_bd_addr(&packet[3], addr); 4285 addr_type = BD_ADDR_TYPE_ACL; 4286 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4287 if (!conn) break; 4288 conn->role = (hci_role_t) packet[9]; 4289 break; 4290 #endif 4291 4292 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4293 // release packet buffer only for asynchronous transport and if there are not further fragments 4294 if (hci_transport_synchronous()) { 4295 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4296 return; // instead of break: to avoid re-entering hci_run() 4297 } 4298 hci_stack->acl_fragmentation_tx_active = 0; 4299 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4300 hci_stack->iso_fragmentation_tx_active = 0; 4301 if (hci_stack->iso_fragmentation_total_size) break; 4302 #endif 4303 if (hci_stack->acl_fragmentation_total_size) break; 4304 4305 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4306 btstack_assert(hci_stack->hci_packet_buffer_reserved); 4307 hci_stack->hci_packet_buffer_reserved = false; 4308 4309 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4310 hci_iso_notify_can_send_now(); 4311 #endif 4312 // L2CAP receives this event via the hci_emit_event below 4313 4314 #ifdef ENABLE_CLASSIC 4315 // For SCO, we do the can_send_now_check here 4316 hci_notify_if_sco_can_send_now(); 4317 #endif 4318 break; 4319 4320 #ifdef ENABLE_CLASSIC 4321 case HCI_EVENT_SCO_CAN_SEND_NOW: 4322 // For SCO, we do the can_send_now_check here 4323 hci_stack->sco_can_send_now = true; 4324 hci_notify_if_sco_can_send_now(); 4325 return; 4326 4327 // explode inquriy results for easier consumption 4328 case HCI_EVENT_INQUIRY_RESULT: 4329 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4330 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4331 gap_inquiry_explode(packet, size); 4332 break; 4333 #endif 4334 4335 #ifdef ENABLE_BLE 4336 case HCI_EVENT_LE_META: 4337 switch (packet[2]){ 4338 #ifdef ENABLE_LE_CENTRAL 4339 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4340 if (!hci_stack->le_scanning_enabled) break; 4341 le_handle_advertisement_report(packet, size); 4342 break; 4343 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4344 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4345 if (!hci_stack->le_scanning_enabled) break; 4346 le_handle_extended_advertisement_report(packet, size); 4347 break; 4348 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4349 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4350 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4351 break; 4352 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4353 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4354 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4355 while (btstack_linked_list_iterator_has_next(&it)) { 4356 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4357 if (advertising_set->advertising_handle == advertising_handle){ 4358 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4359 } 4360 } 4361 break; 4362 #endif 4363 #endif 4364 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4365 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4366 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4367 hci_handle_le_connection_complete_event(packet); 4368 break; 4369 4370 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4371 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4372 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4373 conn = hci_connection_for_handle(handle); 4374 if (!conn) break; 4375 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4376 break; 4377 4378 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4379 // connection 4380 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4381 conn = hci_connection_for_handle(handle); 4382 if (conn) { 4383 // read arguments 4384 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4385 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4386 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4387 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4388 4389 // validate against current connection parameter range 4390 le_connection_parameter_range_t existing_range; 4391 gap_get_connection_parameter_range(&existing_range); 4392 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4393 if (update_parameter){ 4394 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4395 conn->le_conn_interval_min = le_conn_interval_min; 4396 conn->le_conn_interval_max = le_conn_interval_max; 4397 conn->le_conn_latency = le_conn_latency; 4398 conn->le_supervision_timeout = le_supervision_timeout; 4399 } else { 4400 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4401 } 4402 } 4403 break; 4404 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4405 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4406 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4407 conn = hci_connection_for_handle(handle); 4408 if (conn) { 4409 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4410 } 4411 break; 4412 #endif 4413 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4414 case HCI_SUBEVENT_LE_CIS_REQUEST: 4415 // incoming CIS request, allocate iso stream object and cache metadata 4416 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4417 hci_subevent_le_cis_request_get_cig_id(packet), 4418 hci_subevent_le_cis_request_get_cis_id(packet)); 4419 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4420 if (iso_stream != NULL){ 4421 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4422 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4423 } 4424 break; 4425 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4426 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4427 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4428 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4429 iso_stream = hci_iso_stream_for_con_handle(handle); 4430 btstack_assert(iso_stream != NULL); 4431 // track connection info 4432 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4433 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4434 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4435 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4436 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4437 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4438 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4439 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4440 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4441 // CIS Accept by Peripheral 4442 if (status == ERROR_CODE_SUCCESS){ 4443 if (iso_stream->max_sdu_p_to_c > 0){ 4444 // we're peripheral and we will send data 4445 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4446 } else { 4447 // we're peripheral and we will only receive data 4448 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4449 } 4450 } else { 4451 hci_cis_handle_created(iso_stream, status); 4452 } 4453 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4454 } else { 4455 // CIG Setup by Central 4456 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4457 btstack_assert(cig != NULL); 4458 // update iso stream state 4459 if (status == ERROR_CODE_SUCCESS){ 4460 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4461 } else { 4462 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4463 } 4464 // update cig state 4465 uint8_t i; 4466 for (i=0;i<cig->num_cis;i++){ 4467 if (cig->cis_con_handles[i] == handle){ 4468 cig->cis_setup_active[i] = false; 4469 if (status == ERROR_CODE_SUCCESS){ 4470 cig->cis_established[i] = true; 4471 } else { 4472 hci_cis_handle_created(iso_stream, status); 4473 } 4474 } 4475 } 4476 4477 // trigger iso path setup if complete 4478 bool cis_setup_active = false; 4479 for (i=0;i<cig->num_cis;i++){ 4480 cis_setup_active |= cig->cis_setup_active[i]; 4481 } 4482 if (cis_setup_active == false){ 4483 cig->state_vars.next_cis = 0; 4484 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4485 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4486 } 4487 } 4488 } 4489 break; 4490 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4491 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4492 big = hci_big_for_handle(packet[4]); 4493 if (big != NULL){ 4494 uint8_t status = packet[3]; 4495 if (status == ERROR_CODE_SUCCESS){ 4496 // store bis_con_handles and trigger iso path setup 4497 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4498 uint8_t i; 4499 for (i=0;i<num_bis;i++){ 4500 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4501 big->bis_con_handles[i] = bis_handle; 4502 // assign bis handle 4503 btstack_linked_list_iterator_t it; 4504 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4505 while (btstack_linked_list_iterator_has_next(&it)){ 4506 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4507 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4508 (iso_stream->group_id == big->big_handle)){ 4509 iso_stream->cis_handle = bis_handle; 4510 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4511 break; 4512 } 4513 } 4514 } 4515 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4516 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4517 big->state_vars.next_bis = 0; 4518 } 4519 } else { 4520 // create BIG failed or has been stopped by us 4521 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4522 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4523 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4524 hci_emit_big_created(big, status); 4525 } else { 4526 hci_emit_big_terminated(big); 4527 } 4528 } 4529 } 4530 break; 4531 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4532 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4533 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4534 if (big != NULL){ 4535 // finalize associated ISO streams 4536 btstack_linked_list_iterator_t it; 4537 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4538 while (btstack_linked_list_iterator_has_next(&it)){ 4539 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4540 if (iso_stream->group_id == big->big_handle){ 4541 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4542 btstack_linked_list_iterator_remove(&it); 4543 btstack_memory_hci_iso_stream_free(iso_stream); 4544 } 4545 } 4546 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4547 switch (big->state){ 4548 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4549 hci_emit_big_created(big, big->state_vars.status); 4550 break; 4551 default: 4552 hci_emit_big_terminated(big); 4553 break; 4554 } 4555 } 4556 break; 4557 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4558 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4559 big_sync = hci_big_sync_for_handle(packet[4]); 4560 if (big_sync != NULL){ 4561 uint8_t status = packet[3]; 4562 uint8_t big_handle = packet[4]; 4563 if (status == ERROR_CODE_SUCCESS){ 4564 // store bis_con_handles and trigger iso path setup 4565 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4566 uint8_t i; 4567 for (i=0;i<num_bis;i++){ 4568 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4569 big_sync->bis_con_handles[i] = bis_handle; 4570 // setup iso_stream_t 4571 btstack_linked_list_iterator_t it; 4572 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4573 while (btstack_linked_list_iterator_has_next(&it)){ 4574 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4575 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4576 (iso_stream->group_id == big_sync->big_handle)){ 4577 iso_stream->cis_handle = bis_handle; 4578 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4579 break; 4580 } 4581 } 4582 } 4583 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4584 // trigger iso path setup 4585 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4586 big_sync->state_vars.next_bis = 0; 4587 } 4588 } else { 4589 // create BIG Sync failed or has been stopped by us 4590 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4591 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4592 hci_emit_big_sync_created(big_sync, status); 4593 } else { 4594 hci_emit_big_sync_stopped(big_handle); 4595 } 4596 } 4597 } 4598 break; 4599 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4600 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4601 big_sync = hci_big_sync_for_handle(packet[4]); 4602 if (big_sync != NULL){ 4603 uint8_t big_handle = packet[4]; 4604 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4605 hci_emit_big_sync_stopped(big_handle); 4606 } 4607 break; 4608 #endif 4609 default: 4610 break; 4611 } 4612 break; 4613 #endif 4614 case HCI_EVENT_VENDOR_SPECIFIC: 4615 // Vendor specific commands often create vendor specific event instead of num completed packets 4616 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4617 switch (hci_stack->manufacturer){ 4618 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4619 hci_stack->num_cmd_packets = 1; 4620 break; 4621 default: 4622 break; 4623 } 4624 break; 4625 default: 4626 break; 4627 } 4628 4629 handle_event_for_current_stack_state(packet, size); 4630 4631 // notify upper stack 4632 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4633 4634 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4635 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4636 handle = little_endian_read_16(packet, 3); 4637 hci_connection_t * aConn = hci_connection_for_handle(handle); 4638 // discard connection if app did not trigger a reconnect in the event handler 4639 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4640 hci_shutdown_connection(aConn); 4641 } 4642 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4643 hci_controller_dump_packets(); 4644 #endif 4645 } 4646 4647 // execute main loop 4648 hci_run(); 4649 } 4650 4651 #ifdef ENABLE_CLASSIC 4652 4653 static void sco_handler(uint8_t * packet, uint16_t size){ 4654 // lookup connection struct 4655 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4656 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4657 if (!conn) return; 4658 4659 #ifdef ENABLE_SCO_OVER_HCI 4660 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4661 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4662 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4663 packet[2] = 0x3c; 4664 memmove(&packet[3], &packet[23], 63); 4665 size = 63; 4666 } 4667 } 4668 4669 if (hci_have_usb_transport()){ 4670 // Nothing to do 4671 } else { 4672 // 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); 4673 if (hci_stack->synchronous_flow_control_enabled == 0){ 4674 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4675 uint8_t max_sco_packets = (uint8_t) btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4676 if (conn->sco_tx_active == 0){ 4677 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4678 conn->sco_tx_active = 1; 4679 conn->sco_tx_ready = max_sco_packets; 4680 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4681 hci_notify_if_sco_can_send_now(); 4682 } 4683 } else { 4684 if (conn->sco_tx_ready < max_sco_packets){ 4685 conn->sco_tx_ready++; 4686 } 4687 hci_notify_if_sco_can_send_now(); 4688 } 4689 } 4690 } 4691 #endif 4692 4693 // deliver to app 4694 if (hci_stack->sco_packet_handler) { 4695 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4696 } 4697 4698 #ifdef HAVE_SCO_TRANSPORT 4699 // We can send one packet for each received packet 4700 conn->sco_tx_ready++; 4701 hci_notify_if_sco_can_send_now(); 4702 #endif 4703 4704 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4705 conn->num_packets_completed++; 4706 hci_stack->host_completed_packets = 1; 4707 hci_run(); 4708 #endif 4709 } 4710 #endif 4711 4712 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4713 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4714 // propagate ISO packets received as ACL 4715 hci_iso_stream_t * iso_stream = NULL; 4716 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4717 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4718 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4719 if (iso_stream != NULL){ 4720 packet_type = HCI_ISO_DATA_PACKET; 4721 } 4722 } 4723 #endif 4724 4725 hci_dump_packet(packet_type, 1, packet, size); 4726 switch (packet_type) { 4727 case HCI_EVENT_PACKET: 4728 event_handler(packet, size); 4729 break; 4730 case HCI_ACL_DATA_PACKET: 4731 acl_handler(packet, size); 4732 break; 4733 #ifdef ENABLE_CLASSIC 4734 case HCI_SCO_DATA_PACKET: 4735 sco_handler(packet, size); 4736 break; 4737 #endif 4738 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4739 case HCI_ISO_DATA_PACKET: 4740 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4741 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4742 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4743 } 4744 hci_iso_packet_handler(iso_stream, packet, size); 4745 break; 4746 #endif 4747 default: 4748 break; 4749 } 4750 } 4751 4752 /** 4753 * @brief Add event packet handler. 4754 */ 4755 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4756 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4757 } 4758 4759 /** 4760 * @brief Remove event packet handler. 4761 */ 4762 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4763 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4764 } 4765 4766 /** Register HCI packet handlers */ 4767 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4768 hci_stack->acl_packet_handler = handler; 4769 } 4770 4771 #ifdef ENABLE_CLASSIC 4772 /** 4773 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4774 */ 4775 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4776 hci_stack->sco_packet_handler = handler; 4777 } 4778 #endif 4779 4780 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4781 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4782 hci_stack->iso_packet_handler = handler; 4783 } 4784 #endif 4785 4786 static void hci_state_reset(void){ 4787 // no connections yet 4788 hci_stack->connections = NULL; 4789 4790 // keep discoverable/connectable as this has been requested by the client(s) 4791 // hci_stack->discoverable = 0; 4792 // hci_stack->connectable = 0; 4793 // hci_stack->bondable = 1; 4794 // hci_stack->own_addr_type = 0; 4795 4796 // buffer is free 4797 hci_stack->hci_packet_buffer_reserved = false; 4798 4799 // no pending cmds 4800 hci_stack->decline_reason = 0; 4801 4802 hci_stack->secure_connections_active = false; 4803 4804 #ifdef ENABLE_CLASSIC 4805 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4806 4807 hci_stack->gap_tasks_classic = 4808 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4809 GAP_TASK_SET_CLASS_OF_DEVICE | 4810 GAP_TASK_SET_LOCAL_NAME | 4811 GAP_TASK_SET_EIR_DATA | 4812 GAP_TASK_WRITE_SCAN_ENABLE | 4813 GAP_TASK_WRITE_PAGE_TIMEOUT; 4814 #endif 4815 4816 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4817 hci_stack->classic_read_local_oob_data = false; 4818 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4819 #endif 4820 4821 // LE 4822 #ifdef ENABLE_BLE 4823 memset(hci_stack->le_random_address, 0, 6); 4824 hci_stack->le_random_address_set = 0; 4825 #endif 4826 #ifdef ENABLE_LE_CENTRAL 4827 hci_stack->le_scanning_active = false; 4828 hci_stack->le_scanning_param_update = true; 4829 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4830 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4831 hci_stack->le_whitelist_capacity = 0; 4832 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4833 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4834 #endif 4835 #endif 4836 #ifdef ENABLE_LE_PERIPHERAL 4837 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4838 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4839 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4840 } 4841 if (hci_stack->le_advertisements_data != NULL){ 4842 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4843 } 4844 #endif 4845 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4846 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4847 #endif 4848 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4849 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4850 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4851 #endif 4852 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4853 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4854 #endif 4855 } 4856 4857 #ifdef ENABLE_CLASSIC 4858 /** 4859 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4860 */ 4861 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4862 // store and open remote device db 4863 hci_stack->link_key_db = link_key_db; 4864 if (hci_stack->link_key_db) { 4865 hci_stack->link_key_db->open(); 4866 } 4867 } 4868 #endif 4869 4870 void hci_init(const hci_transport_t *transport, const void *config){ 4871 4872 #ifdef HAVE_MALLOC 4873 if (!hci_stack) { 4874 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4875 } 4876 btstack_assert(hci_stack != NULL); 4877 #else 4878 hci_stack = &hci_stack_static; 4879 #endif 4880 memset(hci_stack, 0, sizeof(hci_stack_t)); 4881 4882 // reference to use transport layer implementation 4883 hci_stack->hci_transport = transport; 4884 4885 // reference to used config 4886 hci_stack->config = config; 4887 4888 // setup pointer for outgoing packet buffer 4889 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4890 4891 // max acl payload size defined in config.h 4892 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4893 4894 // register packet handlers with transport 4895 transport->register_packet_handler(&packet_handler); 4896 4897 hci_stack->state = HCI_STATE_OFF; 4898 4899 // class of device 4900 hci_stack->class_of_device = 0x007a020c; // Smartphone 4901 4902 // bondable by default 4903 hci_stack->bondable = 1; 4904 4905 #ifdef ENABLE_CLASSIC 4906 // classic name 4907 hci_stack->local_name = default_classic_name; 4908 4909 // Master slave policy 4910 hci_stack->master_slave_policy = 1; 4911 4912 // Allow Role Switch 4913 hci_stack->allow_role_switch = 1; 4914 4915 // Default / minimum security level = 2 4916 hci_stack->gap_security_level = LEVEL_2; 4917 4918 // Default Security Mode 4 4919 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4920 4921 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4922 hci_stack->gap_required_encyrption_key_size = 7; 4923 4924 // Link Supervision Timeout 4925 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4926 4927 // Page Timeout 4928 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4929 4930 // All ACL packet types are enabledh 4931 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4932 #endif 4933 4934 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4935 hci_stack->ssp_enable = 1; 4936 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4937 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4938 hci_stack->ssp_auto_accept = 1; 4939 4940 // Secure Connections: enable (requires support from Controller) 4941 hci_stack->secure_connections_enable = true; 4942 4943 // voice setting - signed 16 bit pcm data with CVSD over the air 4944 hci_stack->sco_voice_setting = 0x60; 4945 4946 #ifdef ENABLE_BLE 4947 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4948 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4949 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4950 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4951 hci_stack->le_connection_latency = 4; // 4 4952 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4953 hci_stack->le_minimum_ce_length = 0; // 0 ms 4954 hci_stack->le_maximum_ce_length = 0; // 0 ms 4955 #endif 4956 4957 #ifdef ENABLE_LE_CENTRAL 4958 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4959 4960 // default LE Scanning 4961 hci_stack->le_scan_type = 0x01; // active 4962 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4963 hci_stack->le_scan_window = 0x30; // 30 ms 4964 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4965 #endif 4966 4967 #ifdef ENABLE_LE_PERIPHERAL 4968 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4969 4970 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4971 hci_stack->le_advertisements_interval_min = 0x0800; 4972 hci_stack->le_advertisements_interval_max = 0x0800; 4973 hci_stack->le_advertisements_type = 0; 4974 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4975 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4976 hci_stack->le_advertisements_channel_map = 0x07; 4977 hci_stack->le_advertisements_filter_policy = 0; 4978 #endif 4979 4980 // connection parameter range used to answer connection parameter update requests in l2cap 4981 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4982 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4983 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4984 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4985 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4986 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4987 4988 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4989 hci_stack->iso_packets_to_queue = 1; 4990 #endif 4991 4992 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4993 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4994 #endif 4995 4996 hci_state_reset(); 4997 } 4998 4999 void hci_deinit(void){ 5000 btstack_run_loop_remove_timer(&hci_stack->timeout); 5001 #ifdef HAVE_MALLOC 5002 if (hci_stack) { 5003 free(hci_stack); 5004 } 5005 #endif 5006 hci_stack = NULL; 5007 5008 #ifdef ENABLE_CLASSIC 5009 disable_l2cap_timeouts = 0; 5010 #endif 5011 } 5012 5013 /** 5014 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5015 */ 5016 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5017 hci_stack->chipset = chipset_driver; 5018 5019 // reset chipset driver - init is also called on power_up 5020 if (hci_stack->chipset && hci_stack->chipset->init){ 5021 hci_stack->chipset->init(hci_stack->config); 5022 } 5023 } 5024 5025 void hci_enable_custom_pre_init(void){ 5026 hci_stack->chipset_pre_init = true; 5027 } 5028 5029 /** 5030 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5031 */ 5032 void hci_set_control(const btstack_control_t *hardware_control){ 5033 // references to used control implementation 5034 hci_stack->control = hardware_control; 5035 // init with transport config 5036 hardware_control->init(hci_stack->config); 5037 } 5038 5039 static void hci_discard_connections(void){ 5040 btstack_linked_list_iterator_t it; 5041 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5042 while (btstack_linked_list_iterator_has_next(&it)){ 5043 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5044 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5045 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5046 hci_shutdown_connection(connection); 5047 } 5048 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5049 while (hci_stack->iso_streams != NULL){ 5050 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5051 } 5052 #endif 5053 } 5054 5055 void hci_close(void){ 5056 5057 #ifdef ENABLE_CLASSIC 5058 // close remote device db 5059 if (hci_stack->link_key_db) { 5060 hci_stack->link_key_db->close(); 5061 } 5062 #endif 5063 5064 hci_discard_connections(); 5065 5066 hci_power_control(HCI_POWER_OFF); 5067 5068 #ifdef HAVE_MALLOC 5069 free(hci_stack); 5070 #endif 5071 hci_stack = NULL; 5072 } 5073 5074 #ifdef HAVE_SCO_TRANSPORT 5075 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5076 hci_stack->sco_transport = sco_transport; 5077 sco_transport->register_packet_handler(&packet_handler); 5078 } 5079 #endif 5080 5081 #ifdef ENABLE_CLASSIC 5082 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5083 // validate ranage and set 5084 if (encryption_key_size < 7) return; 5085 if (encryption_key_size > 16) return; 5086 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5087 } 5088 5089 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5090 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5091 hci_stack->gap_security_mode = security_mode; 5092 return ERROR_CODE_SUCCESS; 5093 } else { 5094 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5095 } 5096 } 5097 5098 gap_security_mode_t gap_get_security_mode(void){ 5099 return hci_stack->gap_security_mode; 5100 } 5101 5102 void gap_set_security_level(gap_security_level_t security_level){ 5103 hci_stack->gap_security_level = security_level; 5104 } 5105 5106 gap_security_level_t gap_get_security_level(void){ 5107 if (hci_stack->gap_secure_connections_only_mode){ 5108 return LEVEL_4; 5109 } 5110 return hci_stack->gap_security_level; 5111 } 5112 5113 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5114 hci_stack->gap_minimal_service_security_level = security_level; 5115 } 5116 5117 void gap_set_secure_connections_only_mode(bool enable){ 5118 hci_stack->gap_secure_connections_only_mode = enable; 5119 } 5120 5121 bool gap_get_secure_connections_only_mode(void){ 5122 return hci_stack->gap_secure_connections_only_mode; 5123 } 5124 #endif 5125 5126 #ifdef ENABLE_CLASSIC 5127 void gap_set_class_of_device(uint32_t class_of_device){ 5128 hci_stack->class_of_device = class_of_device; 5129 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5130 hci_run(); 5131 } 5132 5133 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5134 hci_stack->default_link_policy_settings = default_link_policy_settings; 5135 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5136 hci_run(); 5137 } 5138 5139 void gap_set_allow_role_switch(bool allow_role_switch){ 5140 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5141 } 5142 5143 uint8_t hci_get_allow_role_switch(void){ 5144 return hci_stack->allow_role_switch; 5145 } 5146 5147 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5148 hci_stack->link_supervision_timeout = link_supervision_timeout; 5149 } 5150 5151 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5152 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5153 } 5154 5155 uint16_t hci_automatic_flush_timeout(void){ 5156 return hci_stack->automatic_flush_timeout; 5157 } 5158 5159 void hci_disable_l2cap_timeout_check(void){ 5160 disable_l2cap_timeouts = 1; 5161 } 5162 #endif 5163 5164 #ifndef HAVE_HOST_CONTROLLER_API 5165 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5166 void hci_set_bd_addr(bd_addr_t addr){ 5167 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5168 hci_stack->custom_bd_addr_set = 1; 5169 } 5170 #endif 5171 5172 // State-Module-Driver overview 5173 // state module low-level 5174 // HCI_STATE_OFF off close 5175 // HCI_STATE_INITIALIZING, on open 5176 // HCI_STATE_WORKING, on open 5177 // HCI_STATE_HALTING, on open 5178 // HCI_STATE_SLEEPING, off/sleep close 5179 // HCI_STATE_FALLING_ASLEEP on open 5180 5181 static int hci_power_control_on(void){ 5182 5183 // power on 5184 int err = 0; 5185 if (hci_stack->control && hci_stack->control->on){ 5186 err = (*hci_stack->control->on)(); 5187 } 5188 if (err){ 5189 log_error( "POWER_ON failed"); 5190 hci_emit_hci_open_failed(); 5191 return err; 5192 } 5193 5194 // int chipset driver 5195 if (hci_stack->chipset && hci_stack->chipset->init){ 5196 hci_stack->chipset->init(hci_stack->config); 5197 } 5198 5199 // init transport 5200 if (hci_stack->hci_transport->init){ 5201 hci_stack->hci_transport->init(hci_stack->config); 5202 } 5203 5204 // open transport 5205 err = hci_stack->hci_transport->open(); 5206 if (err){ 5207 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5208 if (hci_stack->control && hci_stack->control->off){ 5209 (*hci_stack->control->off)(); 5210 } 5211 hci_emit_hci_open_failed(); 5212 return err; 5213 } 5214 return 0; 5215 } 5216 5217 static void hci_power_control_off(void){ 5218 5219 log_info("hci_power_control_off"); 5220 5221 // close low-level device 5222 hci_stack->hci_transport->close(); 5223 5224 log_info("hci_power_control_off - hci_transport closed"); 5225 5226 // power off 5227 if (hci_stack->control && hci_stack->control->off){ 5228 (*hci_stack->control->off)(); 5229 } 5230 5231 log_info("hci_power_control_off - control closed"); 5232 5233 hci_stack->state = HCI_STATE_OFF; 5234 } 5235 5236 static void hci_power_control_sleep(void){ 5237 5238 log_info("hci_power_control_sleep"); 5239 5240 #if 0 5241 // don't close serial port during sleep 5242 5243 // close low-level device 5244 hci_stack->hci_transport->close(hci_stack->config); 5245 #endif 5246 5247 // sleep mode 5248 if (hci_stack->control && hci_stack->control->sleep){ 5249 (*hci_stack->control->sleep)(); 5250 } 5251 5252 hci_stack->state = HCI_STATE_SLEEPING; 5253 } 5254 5255 static int hci_power_control_wake(void){ 5256 5257 log_info("hci_power_control_wake"); 5258 5259 // wake on 5260 if (hci_stack->control && hci_stack->control->wake){ 5261 (*hci_stack->control->wake)(); 5262 } 5263 5264 #if 0 5265 // open low-level device 5266 int err = hci_stack->hci_transport->open(hci_stack->config); 5267 if (err){ 5268 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5269 if (hci_stack->control && hci_stack->control->off){ 5270 (*hci_stack->control->off)(); 5271 } 5272 hci_emit_hci_open_failed(); 5273 return err; 5274 } 5275 #endif 5276 5277 return 0; 5278 } 5279 5280 static void hci_power_enter_initializing_state(void){ 5281 // set up state machine 5282 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5283 hci_stack->hci_packet_buffer_reserved = false; 5284 hci_stack->state = HCI_STATE_INITIALIZING; 5285 5286 #ifndef HAVE_HOST_CONTROLLER_API 5287 if (hci_stack->chipset_pre_init) { 5288 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5289 } else 5290 #endif 5291 { 5292 hci_stack->substate = HCI_INIT_SEND_RESET; 5293 } 5294 } 5295 5296 static void hci_power_enter_halting_state(void){ 5297 #ifdef ENABLE_BLE 5298 // drop entries scheduled for removal, mark others for re-adding 5299 btstack_linked_list_iterator_t it; 5300 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5301 while (btstack_linked_list_iterator_has_next(&it)){ 5302 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5303 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5304 btstack_linked_list_iterator_remove(&it); 5305 btstack_memory_whitelist_entry_free(entry); 5306 } else { 5307 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5308 } 5309 } 5310 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5311 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5312 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5313 while (btstack_linked_list_iterator_has_next(&it)){ 5314 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5315 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5316 btstack_linked_list_iterator_remove(&it); 5317 btstack_memory_periodic_advertiser_list_entry_free(entry); 5318 } else { 5319 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5320 continue; 5321 } 5322 } 5323 #endif 5324 #endif 5325 // see hci_run 5326 hci_stack->state = HCI_STATE_HALTING; 5327 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5328 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5329 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5330 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5331 btstack_run_loop_add_timer(&hci_stack->timeout); 5332 } 5333 5334 // returns error 5335 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5336 int err; 5337 switch (power_mode){ 5338 case HCI_POWER_ON: 5339 err = hci_power_control_on(); 5340 if (err != 0) { 5341 log_error("hci_power_control_on() error %d", err); 5342 return err; 5343 } 5344 hci_power_enter_initializing_state(); 5345 break; 5346 case HCI_POWER_OFF: 5347 // do nothing 5348 break; 5349 case HCI_POWER_SLEEP: 5350 // do nothing (with SLEEP == OFF) 5351 break; 5352 default: 5353 btstack_assert(false); 5354 break; 5355 } 5356 return ERROR_CODE_SUCCESS; 5357 } 5358 5359 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5360 switch (power_mode){ 5361 case HCI_POWER_ON: 5362 // do nothing 5363 break; 5364 case HCI_POWER_OFF: 5365 // no connections yet, just turn it off 5366 hci_power_control_off(); 5367 break; 5368 case HCI_POWER_SLEEP: 5369 // no connections yet, just turn it off 5370 hci_power_control_sleep(); 5371 break; 5372 default: 5373 btstack_assert(false); 5374 break; 5375 } 5376 return ERROR_CODE_SUCCESS; 5377 } 5378 5379 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5380 switch (power_mode){ 5381 case HCI_POWER_ON: 5382 // do nothing 5383 break; 5384 case HCI_POWER_OFF: 5385 hci_power_enter_halting_state(); 5386 break; 5387 case HCI_POWER_SLEEP: 5388 // see hci_run 5389 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5390 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5391 break; 5392 default: 5393 btstack_assert(false); 5394 break; 5395 } 5396 return ERROR_CODE_SUCCESS; 5397 } 5398 5399 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5400 switch (power_mode){ 5401 case HCI_POWER_ON: 5402 hci_power_enter_initializing_state(); 5403 break; 5404 case HCI_POWER_OFF: 5405 // do nothing 5406 break; 5407 case HCI_POWER_SLEEP: 5408 // see hci_run 5409 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5410 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5411 break; 5412 default: 5413 btstack_assert(false); 5414 break; 5415 } 5416 return ERROR_CODE_SUCCESS; 5417 } 5418 5419 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5420 switch (power_mode){ 5421 case HCI_POWER_ON: 5422 hci_power_enter_initializing_state(); 5423 break; 5424 case HCI_POWER_OFF: 5425 hci_power_enter_halting_state(); 5426 break; 5427 case HCI_POWER_SLEEP: 5428 // do nothing 5429 break; 5430 default: 5431 btstack_assert(false); 5432 break; 5433 } 5434 return ERROR_CODE_SUCCESS; 5435 } 5436 5437 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5438 int err; 5439 switch (power_mode){ 5440 case HCI_POWER_ON: 5441 err = hci_power_control_wake(); 5442 if (err) return err; 5443 hci_power_enter_initializing_state(); 5444 break; 5445 case HCI_POWER_OFF: 5446 hci_power_enter_halting_state(); 5447 break; 5448 case HCI_POWER_SLEEP: 5449 // do nothing 5450 break; 5451 default: 5452 btstack_assert(false); 5453 break; 5454 } 5455 return ERROR_CODE_SUCCESS; 5456 } 5457 5458 int hci_power_control(HCI_POWER_MODE power_mode){ 5459 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5460 btstack_run_loop_remove_timer(&hci_stack->timeout); 5461 int err = 0; 5462 switch (hci_stack->state){ 5463 case HCI_STATE_OFF: 5464 err = hci_power_control_state_off(power_mode); 5465 break; 5466 case HCI_STATE_INITIALIZING: 5467 err = hci_power_control_state_initializing(power_mode); 5468 break; 5469 case HCI_STATE_WORKING: 5470 err = hci_power_control_state_working(power_mode); 5471 break; 5472 case HCI_STATE_HALTING: 5473 err = hci_power_control_state_halting(power_mode); 5474 break; 5475 case HCI_STATE_FALLING_ASLEEP: 5476 err = hci_power_control_state_falling_asleep(power_mode); 5477 break; 5478 case HCI_STATE_SLEEPING: 5479 err = hci_power_control_state_sleeping(power_mode); 5480 break; 5481 default: 5482 btstack_assert(false); 5483 break; 5484 } 5485 if (err != 0){ 5486 return err; 5487 } 5488 5489 // create internal event 5490 hci_emit_state(); 5491 5492 // trigger next/first action 5493 hci_run(); 5494 5495 return 0; 5496 } 5497 5498 5499 static void hci_halting_run(void) { 5500 5501 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5502 5503 hci_connection_t *connection; 5504 #ifdef ENABLE_BLE 5505 #ifdef ENABLE_LE_PERIPHERAL 5506 bool stop_advertismenets; 5507 #endif 5508 #endif 5509 5510 switch (hci_stack->substate) { 5511 case HCI_HALTING_CLASSIC_STOP: 5512 #ifdef ENABLE_CLASSIC 5513 if (!hci_can_send_command_packet_now()) return; 5514 5515 if (hci_stack->connectable || hci_stack->discoverable){ 5516 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5517 hci_send_cmd(&hci_write_scan_enable, 0); 5518 return; 5519 } 5520 #endif 5521 /* fall through */ 5522 5523 case HCI_HALTING_LE_ADV_STOP: 5524 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5525 5526 #ifdef ENABLE_BLE 5527 #ifdef ENABLE_LE_PERIPHERAL 5528 if (!hci_can_send_command_packet_now()) return; 5529 5530 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5531 5532 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5533 if (hci_le_extended_advertising_supported()){ 5534 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5535 btstack_linked_list_iterator_t it; 5536 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5537 // stop all periodic advertisements and check if an extended set is active 5538 while (btstack_linked_list_iterator_has_next(&it)){ 5539 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5540 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5541 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5542 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5543 return; 5544 } 5545 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5546 stop_advertismenets = true; 5547 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5548 } 5549 } 5550 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5551 if (stop_advertismenets){ 5552 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5553 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5554 return; 5555 } 5556 } else 5557 #else /* ENABLE_LE_PERIPHERAL */ 5558 { 5559 if (stop_advertismenets) { 5560 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5561 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5562 return; 5563 } 5564 } 5565 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5566 #endif /* ENABLE_LE_PERIPHERAL */ 5567 #endif /* ENABLE_BLE */ 5568 5569 /* fall through */ 5570 5571 case HCI_HALTING_LE_SCAN_STOP: 5572 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5573 if (!hci_can_send_command_packet_now()) return; 5574 5575 #ifdef ENABLE_BLE 5576 #ifdef ENABLE_LE_CENTRAL 5577 if (hci_stack->le_scanning_active){ 5578 hci_le_scan_stop(); 5579 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5580 return; 5581 } 5582 #endif 5583 #endif 5584 5585 /* fall through */ 5586 5587 case HCI_HALTING_DISCONNECT_ALL: 5588 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5589 if (!hci_can_send_command_packet_now()) return; 5590 5591 // close all open connections 5592 connection = (hci_connection_t *) hci_stack->connections; 5593 if (connection) { 5594 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5595 5596 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5597 5598 // check state 5599 switch(connection->state) { 5600 case SENT_DISCONNECT: 5601 case RECEIVED_DISCONNECTION_COMPLETE: 5602 // wait until connection is gone 5603 return; 5604 default: 5605 break; 5606 } 5607 5608 // finally, send the disconnect command 5609 connection->state = SENT_DISCONNECT; 5610 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5611 return; 5612 } 5613 5614 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5615 // stop BIGs and BIG Syncs 5616 if (hci_stack->le_audio_bigs != NULL){ 5617 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5618 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5619 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5620 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5621 return; 5622 } 5623 if (hci_stack->le_audio_big_syncs != NULL){ 5624 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5625 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5626 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5627 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5628 return; 5629 } 5630 #endif 5631 5632 btstack_run_loop_remove_timer(&hci_stack->timeout); 5633 5634 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5635 log_info("HCI_STATE_HALTING: wait 50 ms"); 5636 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5637 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5638 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5639 btstack_run_loop_add_timer(&hci_stack->timeout); 5640 break; 5641 5642 case HCI_HALTING_W4_CLOSE_TIMER: 5643 // keep waiting 5644 break; 5645 5646 case HCI_HALTING_CLOSE: 5647 // close left over connections (that had not been properly closed before) 5648 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5649 hci_discard_connections(); 5650 5651 log_info("HCI_STATE_HALTING, calling off"); 5652 5653 // switch mode 5654 hci_power_control_off(); 5655 5656 log_info("HCI_STATE_HALTING, emitting state"); 5657 hci_emit_state(); 5658 log_info("HCI_STATE_HALTING, done"); 5659 break; 5660 5661 default: 5662 break; 5663 } 5664 }; 5665 5666 static void hci_falling_asleep_run(void){ 5667 hci_connection_t * connection; 5668 switch(hci_stack->substate) { 5669 case HCI_FALLING_ASLEEP_DISCONNECT: 5670 log_info("HCI_STATE_FALLING_ASLEEP"); 5671 // close all open connections 5672 connection = (hci_connection_t *) hci_stack->connections; 5673 if (connection){ 5674 5675 // send disconnect 5676 if (!hci_can_send_command_packet_now()) return; 5677 5678 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5679 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5680 5681 // send disconnected event right away - causes higher layer connections to get closed, too. 5682 hci_shutdown_connection(connection); 5683 return; 5684 } 5685 5686 if (hci_classic_supported()){ 5687 // disable page and inquiry scan 5688 if (!hci_can_send_command_packet_now()) return; 5689 5690 log_info("HCI_STATE_HALTING, disabling inq scans"); 5691 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5692 5693 // continue in next sub state 5694 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5695 break; 5696 } 5697 5698 /* fall through */ 5699 5700 case HCI_FALLING_ASLEEP_COMPLETE: 5701 log_info("HCI_STATE_HALTING, calling sleep"); 5702 // switch mode 5703 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5704 hci_emit_state(); 5705 break; 5706 5707 default: 5708 break; 5709 } 5710 } 5711 5712 #ifdef ENABLE_CLASSIC 5713 5714 static void hci_update_scan_enable(void){ 5715 // 2 = page scan, 1 = inq scan 5716 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5717 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5718 hci_run(); 5719 } 5720 5721 void gap_discoverable_control(uint8_t enable){ 5722 if (enable) enable = 1; // normalize argument 5723 5724 if (hci_stack->discoverable == enable){ 5725 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5726 return; 5727 } 5728 5729 hci_stack->discoverable = enable; 5730 hci_update_scan_enable(); 5731 } 5732 5733 void gap_connectable_control(uint8_t enable){ 5734 if (enable) enable = 1; // normalize argument 5735 5736 // don't emit event 5737 if (hci_stack->connectable == enable) return; 5738 5739 hci_stack->connectable = enable; 5740 hci_update_scan_enable(); 5741 } 5742 #endif 5743 5744 void gap_local_bd_addr(bd_addr_t address_buffer){ 5745 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5746 } 5747 5748 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5749 static void hci_host_num_completed_packets(void){ 5750 5751 // create packet manually as arrays are not supported and num_commands should not get reduced 5752 hci_reserve_packet_buffer(); 5753 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5754 5755 uint16_t size = 0; 5756 uint16_t num_handles = 0; 5757 packet[size++] = 0x35; 5758 packet[size++] = 0x0c; 5759 size++; // skip param len 5760 size++; // skip num handles 5761 5762 // add { handle, packets } entries 5763 btstack_linked_item_t * it; 5764 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5765 hci_connection_t * connection = (hci_connection_t *) it; 5766 if (connection->num_packets_completed){ 5767 little_endian_store_16(packet, size, connection->con_handle); 5768 size += 2; 5769 little_endian_store_16(packet, size, connection->num_packets_completed); 5770 size += 2; 5771 // 5772 num_handles++; 5773 connection->num_packets_completed = 0; 5774 } 5775 } 5776 5777 packet[2] = size - 3; 5778 packet[3] = num_handles; 5779 5780 hci_stack->host_completed_packets = 0; 5781 5782 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5783 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5784 5785 // release packet buffer for synchronous transport implementations 5786 if (hci_transport_synchronous()){ 5787 hci_release_packet_buffer(); 5788 hci_emit_transport_packet_sent(); 5789 } 5790 } 5791 #endif 5792 5793 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5794 UNUSED(ds); 5795 hci_stack->substate = HCI_HALTING_CLOSE; 5796 hci_halting_run(); 5797 } 5798 5799 static bool hci_run_acl_fragments(void){ 5800 if (hci_stack->acl_fragmentation_total_size > 0u) { 5801 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5802 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5803 if (connection) { 5804 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5805 hci_send_acl_packet_fragments(connection); 5806 return true; 5807 } 5808 } else { 5809 // connection gone -> discard further fragments 5810 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5811 hci_stack->acl_fragmentation_total_size = 0; 5812 hci_stack->acl_fragmentation_pos = 0; 5813 } 5814 } 5815 return false; 5816 } 5817 5818 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5819 static bool hci_run_iso_fragments(void){ 5820 if (hci_stack->iso_fragmentation_total_size > 0u) { 5821 // TODO: flow control 5822 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5823 hci_send_iso_packet_fragments(); 5824 return true; 5825 } 5826 } 5827 return false; 5828 } 5829 #endif 5830 5831 #ifdef ENABLE_CLASSIC 5832 5833 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5834 static bool hci_classic_operation_active(void) { 5835 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5836 return true; 5837 } 5838 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5839 return true; 5840 } 5841 btstack_linked_item_t * it; 5842 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5843 hci_connection_t *connection = (hci_connection_t *) it; 5844 switch (connection->state) { 5845 case SENT_CREATE_CONNECTION: 5846 case SENT_CANCEL_CONNECTION: 5847 case SENT_DISCONNECT: 5848 return true; 5849 default: 5850 break; 5851 } 5852 } 5853 return false; 5854 } 5855 #endif 5856 5857 static bool hci_run_general_gap_classic(void){ 5858 5859 // assert stack is working and classic is active 5860 if (hci_classic_supported() == false) return false; 5861 if (hci_stack->state != HCI_STATE_WORKING) return false; 5862 5863 // decline incoming connections 5864 if (hci_stack->decline_reason){ 5865 uint8_t reason = hci_stack->decline_reason; 5866 hci_stack->decline_reason = 0; 5867 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5868 return true; 5869 } 5870 5871 if (hci_stack->gap_tasks_classic != 0){ 5872 hci_run_gap_tasks_classic(); 5873 return true; 5874 } 5875 5876 // start/stop inquiry 5877 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5878 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5879 if (hci_classic_operation_active() == false) 5880 #endif 5881 { 5882 uint8_t duration = hci_stack->inquiry_state; 5883 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5884 if (hci_stack->inquiry_max_period_length != 0){ 5885 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); 5886 } else { 5887 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5888 } 5889 return true; 5890 } 5891 } 5892 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5893 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5894 hci_send_cmd(&hci_inquiry_cancel); 5895 return true; 5896 } 5897 5898 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5899 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5900 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5901 return true; 5902 } 5903 5904 // remote name request 5905 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5906 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5907 if (hci_classic_operation_active() == false) 5908 #endif 5909 { 5910 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5911 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5912 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5913 return true; 5914 } 5915 } 5916 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5917 // Local OOB data 5918 if (hci_stack->classic_read_local_oob_data){ 5919 hci_stack->classic_read_local_oob_data = false; 5920 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5921 hci_send_cmd(&hci_read_local_extended_oob_data); 5922 } else { 5923 hci_send_cmd(&hci_read_local_oob_data); 5924 } 5925 } 5926 #endif 5927 // pairing 5928 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5929 uint8_t state = hci_stack->gap_pairing_state; 5930 uint8_t pin_code[PIN_CODE_LEN]; 5931 switch (state){ 5932 case GAP_PAIRING_STATE_SEND_PIN: 5933 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5934 memset(pin_code, 0, 16); 5935 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5936 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5937 break; 5938 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5939 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5940 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5941 break; 5942 case GAP_PAIRING_STATE_SEND_PASSKEY: 5943 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5944 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5945 break; 5946 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5947 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5948 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5949 break; 5950 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5951 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5952 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5953 break; 5954 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5955 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5956 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5957 break; 5958 default: 5959 break; 5960 } 5961 return true; 5962 } 5963 return false; 5964 } 5965 #endif 5966 5967 #ifdef ENABLE_BLE 5968 5969 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5970 static uint8_t hci_le_num_phys(uint8_t phys){ 5971 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5972 btstack_assert(phys); 5973 return num_bits_set[phys]; 5974 } 5975 #endif 5976 5977 #ifdef ENABLE_LE_CENTRAL 5978 static void hci_le_scan_stop(void){ 5979 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5980 if (hci_le_extended_advertising_supported()) { 5981 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5982 } else 5983 #endif 5984 { 5985 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5986 } 5987 } 5988 5989 static void 5990 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5991 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5992 if (hci_le_extended_advertising_supported()) { 5993 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5994 uint16_t le_connection_scan_interval[3]; 5995 uint16_t le_connection_scan_window[3]; 5996 uint16_t le_connection_interval_min[3]; 5997 uint16_t le_connection_interval_max[3]; 5998 uint16_t le_connection_latency[3]; 5999 uint16_t le_supervision_timeout[3]; 6000 uint16_t le_minimum_ce_length[3]; 6001 uint16_t le_maximum_ce_length[3]; 6002 6003 uint8_t i; 6004 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 6005 for (i=0;i<num_phys;i++){ 6006 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 6007 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6008 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6009 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6010 le_connection_latency[i] = hci_stack->le_connection_latency; 6011 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6012 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6013 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6014 } 6015 hci_send_cmd(&hci_le_extended_create_connection, 6016 initiator_filter_policy, 6017 hci_stack->le_connection_own_addr_type, // our addr type: 6018 address_type, // peer address type 6019 address, // peer bd addr 6020 hci_stack->le_connection_phys, // initiating PHY 6021 le_connection_scan_interval, // conn scan interval 6022 le_connection_scan_window, // conn scan windows 6023 le_connection_interval_min, // conn interval min 6024 le_connection_interval_max, // conn interval max 6025 le_connection_latency, // conn latency 6026 le_supervision_timeout, // conn latency 6027 le_minimum_ce_length, // min ce length 6028 le_maximum_ce_length // max ce length 6029 ); 6030 } else 6031 #endif 6032 { 6033 hci_send_cmd(&hci_le_create_connection, 6034 hci_stack->le_connection_scan_interval, // conn scan interval 6035 hci_stack->le_connection_scan_window, // conn scan windows 6036 initiator_filter_policy, // don't use whitelist 6037 address_type, // peer address type 6038 address, // peer bd addr 6039 hci_stack->le_connection_own_addr_type, // our addr type: 6040 hci_stack->le_connection_interval_min, // conn interval min 6041 hci_stack->le_connection_interval_max, // conn interval max 6042 hci_stack->le_connection_latency, // conn latency 6043 hci_stack->le_supervision_timeout, // conn latency 6044 hci_stack->le_minimum_ce_length, // min ce length 6045 hci_stack->le_maximum_ce_length // max ce length 6046 ); 6047 } 6048 } 6049 #endif 6050 6051 #ifdef ENABLE_LE_PERIPHERAL 6052 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6053 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6054 uint8_t operation = 0; 6055 if (pos == 0){ 6056 // first fragment or complete data 6057 operation |= 1; 6058 } 6059 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6060 // last fragment or complete data 6061 operation |= 2; 6062 } 6063 return operation; 6064 } 6065 #endif 6066 #endif 6067 6068 static bool hci_run_general_gap_le(void){ 6069 6070 btstack_linked_list_iterator_t lit; 6071 6072 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6073 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6074 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6075 hci_stack->le_resolvable_private_address_update_s = 0; 6076 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6077 return true; 6078 } 6079 #endif 6080 6081 // Phase 1: collect what to stop 6082 6083 #ifdef ENABLE_LE_CENTRAL 6084 bool scanning_stop = false; 6085 bool connecting_stop = false; 6086 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6087 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6088 bool periodic_sync_stop = false; 6089 #endif 6090 #endif 6091 #endif 6092 6093 #ifdef ENABLE_LE_PERIPHERAL 6094 bool advertising_stop = false; 6095 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6096 le_advertising_set_t * advertising_stop_set = NULL; 6097 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6098 bool periodic_advertising_stop = false; 6099 #endif 6100 #endif 6101 #endif 6102 6103 // check if own address changes 6104 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6105 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6106 6107 // check if whitelist needs modification 6108 bool whitelist_modification_pending = false; 6109 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6110 while (btstack_linked_list_iterator_has_next(&lit)){ 6111 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6112 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6113 whitelist_modification_pending = true; 6114 break; 6115 } 6116 } 6117 6118 // check if resolving list needs modification 6119 bool resolving_list_modification_pending = false; 6120 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6121 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6122 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6123 resolving_list_modification_pending = true; 6124 } 6125 #endif 6126 6127 #ifdef ENABLE_LE_CENTRAL 6128 6129 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6130 // check if periodic advertiser list needs modification 6131 bool periodic_list_modification_pending = false; 6132 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6133 while (btstack_linked_list_iterator_has_next(&lit)){ 6134 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6135 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6136 periodic_list_modification_pending = true; 6137 break; 6138 } 6139 } 6140 #endif 6141 6142 // scanning control 6143 if (hci_stack->le_scanning_active) { 6144 // stop if: 6145 // - parameter change required 6146 // - it's disabled 6147 // - whitelist change required but used for scanning 6148 // - resolving list modified 6149 // - own address changes 6150 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6151 if ((hci_stack->le_scanning_param_update) || 6152 !hci_stack->le_scanning_enabled || 6153 (scanning_uses_whitelist && whitelist_modification_pending) || 6154 resolving_list_modification_pending || 6155 random_address_change){ 6156 6157 scanning_stop = true; 6158 } 6159 } 6160 6161 // connecting control 6162 bool connecting_with_whitelist; 6163 switch (hci_stack->le_connecting_state){ 6164 case LE_CONNECTING_DIRECT: 6165 case LE_CONNECTING_WHITELIST: 6166 // stop connecting if: 6167 // - connecting uses white and whitelist modification pending 6168 // - if it got disabled 6169 // - resolving list modified 6170 // - own address changes 6171 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6172 if ((connecting_with_whitelist && whitelist_modification_pending) || 6173 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6174 resolving_list_modification_pending || 6175 random_address_change) { 6176 6177 connecting_stop = true; 6178 } 6179 break; 6180 default: 6181 break; 6182 } 6183 6184 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6185 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6186 // periodic sync control 6187 bool sync_with_advertiser_list; 6188 switch(hci_stack->le_periodic_sync_state){ 6189 case LE_CONNECTING_DIRECT: 6190 case LE_CONNECTING_WHITELIST: 6191 // stop sync if: 6192 // - sync with advertiser list and advertiser list modification pending 6193 // - if it got disabled 6194 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6195 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6196 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6197 periodic_sync_stop = true; 6198 } 6199 break; 6200 default: 6201 break; 6202 } 6203 #endif 6204 #endif 6205 6206 #endif /* ENABLE_LE_CENTRAL */ 6207 6208 #ifdef ENABLE_LE_PERIPHERAL 6209 // le advertisement control 6210 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6211 // stop if: 6212 // - parameter change required 6213 // - random address used in advertising and changes 6214 // - it's disabled 6215 // - whitelist change required but used for advertisement filter policy 6216 // - resolving list modified 6217 // - own address changes 6218 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6219 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6220 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6221 if (advertising_change || 6222 (advertising_uses_random_address && random_address_change) || 6223 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6224 (advertising_uses_whitelist && whitelist_modification_pending) || 6225 resolving_list_modification_pending || 6226 random_address_change) { 6227 6228 advertising_stop = true; 6229 } 6230 } 6231 6232 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6233 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6234 btstack_linked_list_iterator_t it; 6235 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6236 while (btstack_linked_list_iterator_has_next(&it)){ 6237 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6238 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6239 // stop if: 6240 // - parameter change required 6241 // - random address used in connectable advertising and changes 6242 // - it's disabled 6243 // - whitelist change required but used for advertisement filter policy 6244 // - resolving list modified 6245 // - own address changes 6246 // - advertisement set will be removed 6247 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6248 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6249 bool advertising_uses_random_address = 6250 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6251 advertising_connectable; 6252 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6253 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6254 bool advertising_set_random_address_change = 6255 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6256 bool advertising_set_will_be_removed = 6257 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6258 if (advertising_parameter_change || 6259 (advertising_uses_random_address && advertising_set_random_address_change) || 6260 (advertising_enabled == false) || 6261 (advertising_uses_whitelist && whitelist_modification_pending) || 6262 resolving_list_modification_pending || 6263 advertising_set_will_be_removed) { 6264 6265 advertising_stop = true; 6266 advertising_stop_set = advertising_set; 6267 break; 6268 } 6269 } 6270 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6271 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6272 // stop if: 6273 // - it's disabled 6274 // - parameter change required 6275 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6276 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6277 if ((periodic_enabled == false) || periodic_parameter_change){ 6278 periodic_advertising_stop = true; 6279 advertising_stop_set = advertising_set; 6280 } 6281 } 6282 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6283 } 6284 } 6285 #endif 6286 6287 #endif 6288 6289 6290 // Phase 2: stop everything that should be off during modifications 6291 6292 6293 // 2.1 Outgoing connection 6294 #ifdef ENABLE_LE_CENTRAL 6295 if (connecting_stop){ 6296 hci_send_cmd(&hci_le_create_connection_cancel); 6297 return true; 6298 } 6299 #endif 6300 6301 // 2.2 Scanning 6302 #ifdef ENABLE_LE_CENTRAL 6303 if (scanning_stop){ 6304 hci_stack->le_scanning_active = false; 6305 hci_le_scan_stop(); 6306 return true; 6307 } 6308 6309 // 2.3 Periodic Sync 6310 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6311 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6312 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6313 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6314 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6315 return true; 6316 } 6317 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6318 if (periodic_sync_stop){ 6319 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6320 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6321 return true; 6322 } 6323 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6324 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6325 #endif /* ENABLE_LE_CENTRAL */ 6326 6327 // 2.4 Advertising: legacy, extended, periodic 6328 #ifdef ENABLE_LE_PERIPHERAL 6329 if (advertising_stop){ 6330 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6331 if (hci_le_extended_advertising_supported()) { 6332 uint8_t advertising_stop_handle; 6333 if (advertising_stop_set != NULL){ 6334 advertising_stop_handle = advertising_stop_set->advertising_handle; 6335 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6336 } else { 6337 advertising_stop_handle = 0; 6338 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6339 } 6340 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6341 const uint16_t durations[] = { 0 }; 6342 const uint16_t max_events[] = { 0 }; 6343 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6344 } else 6345 #endif 6346 { 6347 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6348 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6349 } 6350 return true; 6351 } 6352 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6353 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6354 if (periodic_advertising_stop){ 6355 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6356 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6357 return true; 6358 } 6359 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6360 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6361 #endif /* ENABLE_LE_PERIPHERAL */ 6362 6363 6364 // Phase 3: modify 6365 6366 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6367 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6368 // GAP Privacy, notify clients upon upcoming random address change 6369 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6370 // notify might cause hci_run to get executed, check if we still can send 6371 gap_privacy_clients_notify(hci_stack->le_random_address); 6372 if (!hci_can_send_command_packet_now()) { 6373 return true; 6374 } 6375 } 6376 6377 // - wait until privacy update completed 6378 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6379 return false; 6380 } 6381 6382 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6383 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6384 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6385 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6386 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6387 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6388 #endif 6389 return true; 6390 } 6391 6392 #ifdef ENABLE_LE_CENTRAL 6393 if (hci_stack->le_scanning_param_update){ 6394 hci_stack->le_scanning_param_update = false; 6395 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6396 if (hci_le_extended_advertising_supported()){ 6397 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6398 uint8_t scan_types[2]; 6399 uint16_t scan_intervals[2]; 6400 uint16_t scan_windows[2]; 6401 6402 uint8_t i; 6403 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6404 for (i=0;i<num_phys;i++){ 6405 scan_types[i] = hci_stack->le_scan_type; 6406 scan_intervals[i] = hci_stack->le_scan_interval; 6407 scan_windows[i] = hci_stack->le_scan_window; 6408 } 6409 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6410 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6411 } else 6412 #endif 6413 { 6414 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6415 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6416 } 6417 return true; 6418 } 6419 #endif 6420 6421 #ifdef ENABLE_LE_PERIPHERAL 6422 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6423 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6424 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6425 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6426 if (hci_le_extended_advertising_supported()){ 6427 // map advertisment type to advertising event properties 6428 uint16_t adv_event_properties = 0; 6429 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6430 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6431 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6432 } 6433 hci_stack->le_advertising_set_in_current_command = 0; 6434 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6435 0, 6436 adv_event_properties, 6437 hci_stack->le_advertisements_interval_min, 6438 hci_stack->le_advertisements_interval_max, 6439 hci_stack->le_advertisements_channel_map, 6440 hci_stack->le_advertisements_own_addr_type, 6441 hci_stack->le_advertisements_direct_address_type, 6442 hci_stack->le_advertisements_direct_address, 6443 hci_stack->le_advertisements_filter_policy, 6444 0x7f, // tx power: no preference 6445 0x01, // primary adv phy: LE 1M 6446 0, // secondary adv max skip 6447 0x01, // secondary adv phy 6448 0, // adv sid 6449 0 // scan request notification 6450 ); 6451 } else 6452 #endif 6453 { 6454 hci_send_cmd(&hci_le_set_advertising_parameters, 6455 hci_stack->le_advertisements_interval_min, 6456 hci_stack->le_advertisements_interval_max, 6457 hci_stack->le_advertisements_type, 6458 hci_stack->le_advertisements_own_addr_type, 6459 hci_stack->le_advertisements_direct_address_type, 6460 hci_stack->le_advertisements_direct_address, 6461 hci_stack->le_advertisements_channel_map, 6462 hci_stack->le_advertisements_filter_policy); 6463 } 6464 return true; 6465 } 6466 6467 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6468 // assumption: only set if extended advertising is supported 6469 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6470 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6471 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6472 return true; 6473 } 6474 #endif 6475 6476 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6477 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6478 uint8_t adv_data_clean[31]; 6479 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6480 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6481 hci_stack->le_advertisements_data_len); 6482 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6483 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6484 if (hci_le_extended_advertising_supported()){ 6485 hci_stack->le_advertising_set_in_current_command = 0; 6486 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6487 } else 6488 #endif 6489 { 6490 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6491 } 6492 return true; 6493 } 6494 6495 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6496 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6497 uint8_t scan_data_clean[31]; 6498 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6499 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6500 hci_stack->le_scan_response_data_len); 6501 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6502 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6503 if (hci_le_extended_advertising_supported()){ 6504 hci_stack->le_advertising_set_in_current_command = 0; 6505 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6506 } else 6507 #endif 6508 { 6509 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6510 } 6511 return true; 6512 } 6513 6514 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6515 if (hci_le_extended_advertising_supported()) { 6516 btstack_linked_list_iterator_t it; 6517 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6518 while (btstack_linked_list_iterator_has_next(&it)){ 6519 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6520 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6521 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6522 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6523 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6524 return true; 6525 } 6526 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6527 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6528 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6529 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6530 advertising_set->advertising_handle, 6531 advertising_set->extended_params.advertising_event_properties, 6532 advertising_set->extended_params.primary_advertising_interval_min, 6533 advertising_set->extended_params.primary_advertising_interval_max, 6534 advertising_set->extended_params.primary_advertising_channel_map, 6535 advertising_set->extended_params.own_address_type, 6536 advertising_set->extended_params.peer_address_type, 6537 advertising_set->extended_params.peer_address, 6538 advertising_set->extended_params.advertising_filter_policy, 6539 advertising_set->extended_params.advertising_tx_power, 6540 advertising_set->extended_params.primary_advertising_phy, 6541 advertising_set->extended_params.secondary_advertising_max_skip, 6542 advertising_set->extended_params.secondary_advertising_phy, 6543 advertising_set->extended_params.advertising_sid, 6544 advertising_set->extended_params.scan_request_notification_enable 6545 ); 6546 return true; 6547 } 6548 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6549 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6550 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6551 return true; 6552 } 6553 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6554 uint16_t pos = advertising_set->adv_data_pos; 6555 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6556 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6557 if ((operation & 0x02) != 0){ 6558 // last fragment or complete data 6559 operation |= 2; 6560 advertising_set->adv_data_pos = 0; 6561 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6562 } else { 6563 advertising_set->adv_data_pos += data_to_upload; 6564 } 6565 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6566 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6567 return true; 6568 } 6569 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6570 uint16_t pos = advertising_set->scan_data_pos; 6571 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6572 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6573 if ((operation & 0x02) != 0){ 6574 advertising_set->scan_data_pos = 0; 6575 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6576 } else { 6577 advertising_set->scan_data_pos += data_to_upload; 6578 } 6579 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6580 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6581 return true; 6582 } 6583 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6584 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6585 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6586 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6587 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6588 advertising_set->advertising_handle, 6589 advertising_set->periodic_params.periodic_advertising_interval_min, 6590 advertising_set->periodic_params.periodic_advertising_interval_max, 6591 advertising_set->periodic_params.periodic_advertising_properties); 6592 return true; 6593 } 6594 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6595 uint16_t pos = advertising_set->periodic_data_pos; 6596 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6597 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6598 if ((operation & 0x02) != 0){ 6599 // last fragment or complete data 6600 operation |= 2; 6601 advertising_set->periodic_data_pos = 0; 6602 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6603 } else { 6604 advertising_set->periodic_data_pos += data_to_upload; 6605 } 6606 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6607 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6608 return true; 6609 } 6610 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6611 } 6612 } 6613 #endif 6614 6615 #endif 6616 6617 #ifdef ENABLE_LE_CENTRAL 6618 // if connect with whitelist was active and is not cancelled yet, wait until next time 6619 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6620 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6621 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6622 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6623 #endif 6624 #endif 6625 6626 // LE Whitelist Management 6627 if (whitelist_modification_pending){ 6628 // add/remove entries 6629 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6630 while (btstack_linked_list_iterator_has_next(&lit)){ 6631 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6632 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6633 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6634 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6635 bd_addr_type_t address_type = entry->address_type; 6636 bd_addr_t address; 6637 memcpy(address, entry->address, 6); 6638 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6639 // remove from whitelist if not scheduled for re-addition 6640 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6641 btstack_memory_whitelist_entry_free(entry); 6642 } 6643 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6644 return true; 6645 } 6646 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6647 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6648 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6649 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6650 return true; 6651 } 6652 } 6653 } 6654 6655 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6656 // LE Resolving List Management 6657 if (resolving_list_modification_pending) { 6658 uint16_t i; 6659 uint8_t null_16[16]; 6660 uint8_t local_irk_flipped[16]; 6661 const uint8_t *local_irk; 6662 switch (hci_stack->le_resolving_list_state) { 6663 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6664 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6665 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6666 return true; 6667 case LE_RESOLVING_LIST_READ_SIZE: 6668 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6669 hci_send_cmd(&hci_le_read_resolving_list_size); 6670 return true; 6671 case LE_RESOLVING_LIST_SEND_CLEAR: 6672 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6673 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6674 sizeof(hci_stack->le_resolving_list_add_entries)); 6675 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6676 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6677 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6678 sizeof(hci_stack->le_resolving_list_remove_entries)); 6679 hci_send_cmd(&hci_le_clear_resolving_list); 6680 return true; 6681 case LE_RESOLVING_LIST_SET_IRK: 6682 // set IRK used by RPA for undirected advertising 6683 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6684 local_irk = gap_get_persistent_irk(); 6685 reverse_128(local_irk, local_irk_flipped); 6686 memset(null_16, 0, sizeof(null_16)); 6687 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6688 null_16, local_irk_flipped); 6689 return true; 6690 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6691 // first remove old entries 6692 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6693 uint8_t offset = i >> 3; 6694 uint8_t mask = 1 << (i & 7); 6695 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6696 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6697 bd_addr_t peer_identity_addreses; 6698 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6699 sm_key_t peer_irk; 6700 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6701 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6702 6703 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6704 // trigger whitelist entry 'update' (work around for controller bug) 6705 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6706 while (btstack_linked_list_iterator_has_next(&lit)) { 6707 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6708 if (entry->address_type != peer_identity_addr_type) continue; 6709 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6710 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6711 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6712 } 6713 #endif 6714 6715 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6716 peer_identity_addreses); 6717 return true; 6718 } 6719 6720 // then add new entries 6721 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6722 uint8_t offset = i >> 3; 6723 uint8_t mask = 1 << (i & 7); 6724 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6725 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6726 bd_addr_t peer_identity_addreses; 6727 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6728 sm_key_t peer_irk; 6729 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6730 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6731 if (btstack_is_null(peer_irk, 16)) continue; 6732 local_irk = gap_get_persistent_irk(); 6733 // command uses format specifier 'P' that stores 16-byte value without flip 6734 uint8_t peer_irk_flipped[16]; 6735 reverse_128(local_irk, local_irk_flipped); 6736 reverse_128(peer_irk, peer_irk_flipped); 6737 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6738 peer_irk_flipped, local_irk_flipped); 6739 return true; 6740 } 6741 6742 // finally, set privacy mode 6743 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6744 uint8_t offset = i >> 3; 6745 uint8_t mask = 1 << (i & 7); 6746 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6747 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6748 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6749 // Network Privacy Mode is default 6750 continue; 6751 } 6752 bd_addr_t peer_identity_address; 6753 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6754 sm_key_t peer_irk; 6755 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6756 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6757 if (btstack_is_null(peer_irk, 16)) continue; 6758 // command uses format specifier 'P' that stores 16-byte value without flip 6759 uint8_t peer_irk_flipped[16]; 6760 reverse_128(peer_irk, peer_irk_flipped); 6761 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6762 return true; 6763 } 6764 break; 6765 6766 default: 6767 break; 6768 } 6769 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6770 } 6771 #endif 6772 6773 #ifdef ENABLE_LE_CENTRAL 6774 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6775 // LE Whitelist Management 6776 if (periodic_list_modification_pending){ 6777 // add/remove entries 6778 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6779 while (btstack_linked_list_iterator_has_next(&lit)){ 6780 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6781 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6782 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6783 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6784 return true; 6785 } 6786 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6787 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6788 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6789 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6790 return true; 6791 } 6792 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6793 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6794 btstack_memory_periodic_advertiser_list_entry_free(entry); 6795 } 6796 } 6797 } 6798 #endif 6799 #endif 6800 6801 #ifdef ENABLE_LE_CENTRAL 6802 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6803 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6804 if (hci_stack->le_past_set_default_params){ 6805 hci_stack->le_past_set_default_params = false; 6806 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6807 hci_stack->le_past_mode, 6808 hci_stack->le_past_skip, 6809 hci_stack->le_past_sync_timeout, 6810 hci_stack->le_past_cte_type); 6811 return true; 6812 } 6813 #endif 6814 #endif 6815 #endif 6816 6817 // post-pone all actions until stack is fully working 6818 if (hci_stack->state != HCI_STATE_WORKING) return false; 6819 6820 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6821 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6822 6823 // Phase 4: restore state 6824 6825 #ifdef ENABLE_LE_CENTRAL 6826 // re-start scanning 6827 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6828 hci_stack->le_scanning_active = true; 6829 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6830 if (hci_le_extended_advertising_supported()){ 6831 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6832 } else 6833 #endif 6834 { 6835 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6836 } 6837 return true; 6838 } 6839 #endif 6840 6841 #ifdef ENABLE_LE_CENTRAL 6842 // re-start connecting 6843 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6844 bd_addr_t null_addr; 6845 memset(null_addr, 0, 6); 6846 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6847 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6848 hci_send_le_create_connection(1, 0, null_addr); 6849 return true; 6850 } 6851 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6852 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6853 switch(hci_stack->le_periodic_sync_request){ 6854 case LE_CONNECTING_DIRECT: 6855 case LE_CONNECTING_WHITELIST: 6856 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6857 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6858 hci_stack->le_periodic_sync_options, 6859 hci_stack->le_periodic_sync_advertising_sid, 6860 hci_stack->le_periodic_sync_advertiser_address_type, 6861 hci_stack->le_periodic_sync_advertiser_address, 6862 hci_stack->le_periodic_sync_skip, 6863 hci_stack->le_periodic_sync_timeout, 6864 hci_stack->le_periodic_sync_cte_type); 6865 return true; 6866 default: 6867 break; 6868 } 6869 } 6870 #endif 6871 #endif 6872 6873 #ifdef ENABLE_LE_PERIPHERAL 6874 // re-start advertising 6875 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6876 // check if advertisements should be enabled given 6877 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6878 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6879 6880 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6881 if (hci_le_extended_advertising_supported()){ 6882 const uint8_t advertising_handles[] = { 0 }; 6883 const uint16_t durations[] = { 0 }; 6884 const uint16_t max_events[] = { 0 }; 6885 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6886 } else 6887 #endif 6888 { 6889 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6890 } 6891 return true; 6892 } 6893 6894 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6895 if (hci_le_extended_advertising_supported()) { 6896 btstack_linked_list_iterator_t it; 6897 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6898 while (btstack_linked_list_iterator_has_next(&it)) { 6899 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6900 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6901 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6902 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6903 const uint16_t durations[] = { advertising_set->enable_timeout }; 6904 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6905 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6906 return true; 6907 } 6908 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6909 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6910 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6911 uint8_t enable = 1; 6912 if (advertising_set->periodic_include_adi){ 6913 enable |= 2; 6914 } 6915 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6916 return true; 6917 } 6918 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6919 } 6920 } 6921 #endif 6922 #endif 6923 6924 return false; 6925 } 6926 6927 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6928 static bool hci_run_iso_tasks(void){ 6929 btstack_linked_list_iterator_t it; 6930 6931 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6932 return false; 6933 } 6934 6935 // BIG 6936 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6937 while (btstack_linked_list_iterator_has_next(&it)){ 6938 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6939 switch (big->state){ 6940 case LE_AUDIO_BIG_STATE_CREATE: 6941 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6942 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6943 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6944 hci_send_cmd(&hci_le_create_big, 6945 big->params->big_handle, 6946 big->params->advertising_handle, 6947 big->params->num_bis, 6948 big->params->sdu_interval_us, 6949 big->params->max_sdu, 6950 big->params->max_transport_latency_ms, 6951 big->params->rtn, 6952 big->params->phy, 6953 big->params->packing, 6954 big->params->framing, 6955 big->params->encryption, 6956 big->params->broadcast_code); 6957 return true; 6958 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6959 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6960 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); 6961 return true; 6962 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6963 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6964 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6965 return true; 6966 case LE_AUDIO_BIG_STATE_TERMINATE: 6967 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6968 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6969 return true; 6970 default: 6971 break; 6972 } 6973 } 6974 6975 // BIG Sync 6976 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6977 while (btstack_linked_list_iterator_has_next(&it)){ 6978 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6979 switch (big_sync->state){ 6980 case LE_AUDIO_BIG_STATE_CREATE: 6981 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6982 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6983 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6984 hci_send_cmd(&hci_le_big_create_sync, 6985 big_sync->params->big_handle, 6986 big_sync->params->sync_handle, 6987 big_sync->params->encryption, 6988 big_sync->params->broadcast_code, 6989 big_sync->params->mse, 6990 big_sync->params->big_sync_timeout_10ms, 6991 big_sync->params->num_bis, 6992 big_sync->params->bis_indices); 6993 return true; 6994 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6995 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6996 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); 6997 return true; 6998 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6999 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7000 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7001 return true; 7002 case LE_AUDIO_BIG_STATE_TERMINATE: 7003 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7004 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7005 return true; 7006 default: 7007 break; 7008 } 7009 } 7010 7011 // CIG 7012 bool cig_active; 7013 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7014 while (btstack_linked_list_iterator_has_next(&it)) { 7015 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7016 uint8_t i; 7017 // Set CIG Parameters 7018 uint8_t cis_id[MAX_NR_CIS]; 7019 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7020 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7021 uint8_t phy_c_to_p[MAX_NR_CIS]; 7022 uint8_t phy_p_to_c[MAX_NR_CIS]; 7023 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7024 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7025 switch (cig->state) { 7026 case LE_AUDIO_CIG_STATE_CREATE: 7027 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7028 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7029 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7030 le_audio_cig_params_t * params = cig->params; 7031 for (i = 0; i < params->num_cis; i++) { 7032 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7033 cis_id[i] = cis_params->cis_id; 7034 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7035 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7036 phy_c_to_p[i] = cis_params->phy_c_to_p; 7037 phy_p_to_c[i] = cis_params->phy_p_to_c; 7038 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7039 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7040 } 7041 hci_send_cmd(&hci_le_set_cig_parameters, 7042 cig->cig_id, 7043 params->sdu_interval_c_to_p, 7044 params->sdu_interval_p_to_c, 7045 params->worst_case_sca, 7046 params->packing, 7047 params->framing, 7048 params->max_transport_latency_c_to_p, 7049 params->max_transport_latency_p_to_c, 7050 params->num_cis, 7051 cis_id, 7052 max_sdu_c_to_p, 7053 max_sdu_p_to_c, 7054 phy_c_to_p, 7055 phy_p_to_c, 7056 rtn_c_to_p, 7057 rtn_p_to_c 7058 ); 7059 return true; 7060 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7061 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7062 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7063 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7064 for (i=0;i<cig->num_cis;i++){ 7065 cig->cis_setup_active[i] = true; 7066 } 7067 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7068 return true; 7069 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7070 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7071 // find next path to setup 7072 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7073 if (cig->cis_established[cis_index] == false) { 7074 continue; 7075 } 7076 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7077 bool setup = true; 7078 if (cis_direction == 0){ 7079 // 0 - input - host to controller 7080 // we are central => central to peripheral 7081 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7082 } else { 7083 // 1 - output - controller to host 7084 // we are central => peripheral to central 7085 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7086 } 7087 if (setup){ 7088 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7089 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7090 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7091 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); 7092 return true; 7093 } 7094 cig->state_vars.next_cis++; 7095 } 7096 // emit done 7097 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7098 break; 7099 case LE_AUDIO_CIG_STATE_REMOVE: 7100 // check if CIG Active 7101 cig_active = false; 7102 for (i = 0; i < cig->num_cis; i++) { 7103 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7104 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7105 if (stream != NULL){ 7106 cig_active = true; 7107 break; 7108 } 7109 } 7110 } 7111 if (cig_active == false){ 7112 btstack_linked_list_iterator_remove(&it); 7113 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7114 return true; 7115 } 7116 default: 7117 break; 7118 } 7119 } 7120 7121 // CIS Accept/Reject/Setup ISO Path/Close 7122 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7123 while (btstack_linked_list_iterator_has_next(&it)) { 7124 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7125 hci_con_handle_t con_handle; 7126 switch (iso_stream->state){ 7127 case HCI_ISO_STREAM_W2_ACCEPT: 7128 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7129 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7130 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7131 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7132 return true; 7133 case HCI_ISO_STREAM_W2_REJECT: 7134 con_handle = iso_stream->cis_handle; 7135 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7136 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7137 hci_iso_stream_finalize(iso_stream); 7138 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7139 return true; 7140 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7141 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7142 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7143 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7144 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); 7145 break; 7146 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7147 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7148 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7149 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7150 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); 7151 break; 7152 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7153 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7154 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle); 7155 break; 7156 default: 7157 break; 7158 } 7159 } 7160 7161 return false; 7162 } 7163 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7164 #endif 7165 7166 static bool hci_run_general_pending_commands(void){ 7167 btstack_linked_item_t * it; 7168 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7169 hci_connection_t * connection = (hci_connection_t *) it; 7170 7171 switch(connection->state){ 7172 case SEND_CREATE_CONNECTION: 7173 switch(connection->address_type){ 7174 #ifdef ENABLE_CLASSIC 7175 case BD_ADDR_TYPE_ACL: 7176 log_info("sending hci_create_connection"); 7177 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7178 break; 7179 #endif 7180 default: 7181 #ifdef ENABLE_BLE 7182 #ifdef ENABLE_LE_CENTRAL 7183 log_info("sending hci_le_create_connection"); 7184 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7185 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7186 hci_send_le_create_connection(0, connection->address_type, connection->address); 7187 connection->state = SENT_CREATE_CONNECTION; 7188 #endif 7189 #endif 7190 break; 7191 } 7192 return true; 7193 7194 #ifdef ENABLE_CLASSIC 7195 case RECEIVED_CONNECTION_REQUEST: 7196 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7197 log_info("sending hci_accept_connection_request"); 7198 connection->state = ACCEPTED_CONNECTION_REQUEST; 7199 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7200 return true; 7201 } 7202 break; 7203 #endif 7204 case SEND_DISCONNECT: 7205 connection->state = SENT_DISCONNECT; 7206 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7207 return true; 7208 7209 default: 7210 break; 7211 } 7212 7213 // no further commands if connection is about to get shut down 7214 if (connection->state == SENT_DISCONNECT) continue; 7215 7216 #ifdef ENABLE_CLASSIC 7217 7218 // Handling link key request requires remote supported features 7219 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7220 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7221 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7222 7223 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7224 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7225 if (have_link_key && security_level_sufficient){ 7226 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7227 } else { 7228 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7229 } 7230 return true; 7231 } 7232 7233 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7234 log_info("denying to pin request"); 7235 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7236 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7237 return true; 7238 } 7239 7240 // security assessment requires remote features 7241 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7242 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7243 hci_ssp_assess_security_on_io_cap_request(connection); 7244 // 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 7245 } 7246 7247 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7248 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7249 // set authentication requirements: 7250 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7251 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7252 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7253 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7254 authreq |= 1; 7255 } 7256 bool bonding = hci_stack->bondable; 7257 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7258 // if we have received IO Cap Response, we're in responder role 7259 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7260 if (bonding && !remote_bonding){ 7261 log_info("Remote not bonding, dropping local flag"); 7262 bonding = false; 7263 } 7264 } 7265 if (bonding){ 7266 if (connection->bonding_flags & BONDING_DEDICATED){ 7267 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7268 } else { 7269 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7270 } 7271 } 7272 uint8_t have_oob_data = 0; 7273 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7274 if (connection->classic_oob_c_192 != NULL){ 7275 have_oob_data |= 1; 7276 } 7277 if (connection->classic_oob_c_256 != NULL){ 7278 have_oob_data |= 2; 7279 } 7280 #endif 7281 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7282 return true; 7283 } 7284 7285 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7286 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7287 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7288 return true; 7289 } 7290 7291 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7292 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7293 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7294 const uint8_t zero[16] = { 0 }; 7295 const uint8_t * r_192 = zero; 7296 const uint8_t * c_192 = zero; 7297 const uint8_t * r_256 = zero; 7298 const uint8_t * c_256 = zero; 7299 // verify P-256 OOB 7300 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7301 c_256 = connection->classic_oob_c_256; 7302 if (connection->classic_oob_r_256 != NULL) { 7303 r_256 = connection->classic_oob_r_256; 7304 } 7305 } 7306 // verify P-192 OOB 7307 if ((connection->classic_oob_c_192 != NULL)) { 7308 c_192 = connection->classic_oob_c_192; 7309 if (connection->classic_oob_r_192 != NULL) { 7310 r_192 = connection->classic_oob_r_192; 7311 } 7312 } 7313 7314 // assess security 7315 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7316 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7317 if (need_level_4 && !can_reach_level_4){ 7318 log_info("Level 4 required, but not possible -> abort"); 7319 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7320 // send oob negative reply 7321 c_256 = NULL; 7322 c_192 = NULL; 7323 } 7324 7325 // Reply 7326 if (c_256 != zero) { 7327 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7328 } else if (c_192 != zero){ 7329 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7330 } else { 7331 hci_stack->classic_oob_con_handle = connection->con_handle; 7332 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7333 } 7334 return true; 7335 } 7336 #endif 7337 7338 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7339 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7340 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7341 return true; 7342 } 7343 7344 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7345 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7346 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7347 return true; 7348 } 7349 7350 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7351 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7352 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7353 return true; 7354 } 7355 7356 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7357 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7358 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7359 connection->state = SENT_DISCONNECT; 7360 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7361 return true; 7362 } 7363 7364 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7365 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7366 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7367 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7368 return true; 7369 } 7370 7371 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7372 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7373 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7374 return true; 7375 } 7376 7377 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7378 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7379 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7380 return true; 7381 } 7382 7383 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7384 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7385 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7386 return true; 7387 } 7388 7389 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7390 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7391 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7392 return true; 7393 } 7394 7395 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7396 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7397 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7398 return true; 7399 } 7400 #endif 7401 7402 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7403 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7404 #ifdef ENABLE_CLASSIC 7405 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7406 #endif 7407 if (connection->state != SENT_DISCONNECT){ 7408 connection->state = SENT_DISCONNECT; 7409 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7410 return true; 7411 } 7412 } 7413 7414 #ifdef ENABLE_CLASSIC 7415 uint16_t sniff_min_interval; 7416 switch (connection->sniff_min_interval){ 7417 case 0: 7418 break; 7419 case 0xffff: 7420 connection->sniff_min_interval = 0; 7421 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7422 return true; 7423 default: 7424 sniff_min_interval = connection->sniff_min_interval; 7425 connection->sniff_min_interval = 0; 7426 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7427 return true; 7428 } 7429 7430 if (connection->sniff_subrating_max_latency != 0xffff){ 7431 uint16_t max_latency = connection->sniff_subrating_max_latency; 7432 connection->sniff_subrating_max_latency = 0; 7433 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7434 return true; 7435 } 7436 7437 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7438 uint8_t service_type = (uint8_t) connection->qos_service_type; 7439 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7440 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); 7441 return true; 7442 } 7443 7444 if (connection->request_role != HCI_ROLE_INVALID){ 7445 hci_role_t role = connection->request_role; 7446 connection->request_role = HCI_ROLE_INVALID; 7447 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7448 return true; 7449 } 7450 #endif 7451 7452 if (connection->gap_connection_tasks != 0){ 7453 #ifdef ENABLE_CLASSIC 7454 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7455 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7456 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7457 return true; 7458 } 7459 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7460 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7461 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7462 return true; 7463 } 7464 #endif 7465 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7466 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7467 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7468 return true; 7469 } 7470 #ifdef ENABLE_BLE 7471 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7472 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7473 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7474 return true; 7475 } 7476 #endif 7477 } 7478 7479 #ifdef ENABLE_BLE 7480 switch (connection->le_con_parameter_update_state){ 7481 // response to L2CAP CON PARAMETER UPDATE REQUEST 7482 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7483 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7484 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7485 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7486 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7487 return true; 7488 case CON_PARAMETER_UPDATE_REPLY: 7489 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7490 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7491 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7492 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7493 return true; 7494 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7495 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7496 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7497 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7498 return true; 7499 default: 7500 break; 7501 } 7502 if (connection->le_phy_update_all_phys != 0xffu){ 7503 uint8_t all_phys = connection->le_phy_update_all_phys; 7504 connection->le_phy_update_all_phys = 0xff; 7505 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); 7506 return true; 7507 } 7508 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7509 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7510 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7511 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7512 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7513 return true; 7514 } 7515 if (connection->le_past_advertising_handle != 0xff){ 7516 uint8_t advertising_handle = connection->le_past_advertising_handle; 7517 connection->le_past_advertising_handle = 0xff; 7518 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7519 return true; 7520 } 7521 #endif 7522 #endif 7523 } 7524 return false; 7525 } 7526 7527 static void hci_run(void){ 7528 7529 // stack state sub statemachines 7530 switch (hci_stack->state) { 7531 case HCI_STATE_INITIALIZING: 7532 hci_initializing_run(); 7533 break; 7534 case HCI_STATE_HALTING: 7535 hci_halting_run(); 7536 break; 7537 case HCI_STATE_FALLING_ASLEEP: 7538 hci_falling_asleep_run(); 7539 break; 7540 default: 7541 break; 7542 } 7543 7544 // allow to run after initialization to working transition 7545 if (hci_stack->state != HCI_STATE_WORKING){ 7546 return; 7547 } 7548 7549 bool done; 7550 7551 // send continuation fragments first, as they block the prepared packet buffer 7552 done = hci_run_acl_fragments(); 7553 if (done) return; 7554 7555 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7556 done = hci_run_iso_fragments(); 7557 if (done) return; 7558 #endif 7559 7560 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7561 // send host num completed packets next as they don't require num_cmd_packets > 0 7562 if (!hci_can_send_comand_packet_transport()) return; 7563 if (hci_stack->host_completed_packets){ 7564 hci_host_num_completed_packets(); 7565 return; 7566 } 7567 #endif 7568 7569 if (!hci_can_send_command_packet_now()) return; 7570 7571 // global/non-connection oriented commands 7572 7573 7574 #ifdef ENABLE_CLASSIC 7575 // general gap classic 7576 done = hci_run_general_gap_classic(); 7577 if (done) return; 7578 #endif 7579 7580 #ifdef ENABLE_BLE 7581 // general gap le 7582 done = hci_run_general_gap_le(); 7583 if (done) return; 7584 7585 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7586 // ISO related tasks, e.g. BIG create/terminate/sync 7587 done = hci_run_iso_tasks(); 7588 if (done) return; 7589 #endif 7590 #endif 7591 7592 // send pending HCI commands 7593 hci_run_general_pending_commands(); 7594 } 7595 7596 #ifdef ENABLE_CLASSIC 7597 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7598 // bits 6-9 are 'don't use' 7599 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7600 7601 // restrict packet types to local and remote supported 7602 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7603 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7604 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7605 } 7606 #endif 7607 7608 // funnel for sending cmd packet using single outgoing buffer 7609 static uint8_t hci_send_prepared_cmd_packet(void) { 7610 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7611 // cache opcode 7612 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 7613 // get size 7614 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7615 // send packet 7616 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7617 // release packet buffer on error or for synchronous transport implementations 7618 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7619 hci_release_packet_buffer(); 7620 } 7621 return status; 7622 } 7623 7624 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7625 // house-keeping 7626 7627 #ifdef ENABLE_CLASSIC 7628 bd_addr_t addr; 7629 hci_connection_t * conn; 7630 #endif 7631 #ifdef ENABLE_LE_CENTRAL 7632 uint8_t initiator_filter_policy; 7633 #endif 7634 7635 uint16_t opcode = little_endian_read_16(packet, 0); 7636 switch (opcode) { 7637 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7638 hci_stack->loopback_mode = packet[3]; 7639 break; 7640 7641 #ifdef ENABLE_CLASSIC 7642 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7643 reverse_bd_addr(&packet[3], addr); 7644 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7645 7646 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7647 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7648 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7649 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7650 } 7651 7652 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7653 if (!conn) { 7654 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7655 if (!conn) { 7656 // notify client that alloc failed 7657 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7658 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7659 } 7660 conn->state = SEND_CREATE_CONNECTION; 7661 } 7662 7663 log_info("conn state %u", conn->state); 7664 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7665 switch (conn->state) { 7666 // if connection active exists 7667 case OPEN: 7668 // and OPEN, emit connection complete command 7669 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7670 // packet not sent to controller 7671 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7672 case RECEIVED_DISCONNECTION_COMPLETE: 7673 // create connection triggered in disconnect complete event, let's do it now 7674 break; 7675 case SEND_CREATE_CONNECTION: 7676 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7677 if (hci_classic_operation_active()){ 7678 return ERROR_CODE_SUCCESS; 7679 } 7680 #endif 7681 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7682 break; 7683 default: 7684 // otherwise, just ignore as it is already in the open process 7685 // packet not sent to controller 7686 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7687 } 7688 conn->state = SENT_CREATE_CONNECTION; 7689 7690 // track outgoing connection 7691 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7692 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7693 break; 7694 7695 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7696 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7697 if (conn == NULL) { 7698 // neither SCO nor ACL connection for con handle 7699 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7700 } else { 7701 uint16_t remote_supported_sco_packets; 7702 switch (conn->address_type){ 7703 case BD_ADDR_TYPE_ACL: 7704 // assert SCO connection does not exit 7705 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7706 return ERROR_CODE_COMMAND_DISALLOWED; 7707 } 7708 // cache remote sco packet types 7709 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7710 7711 // allocate connection struct 7712 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7713 HCI_ROLE_MASTER); 7714 if (!conn) { 7715 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7716 } 7717 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7718 break; 7719 case BD_ADDR_TYPE_SCO: 7720 // update of existing SCO connection 7721 break; 7722 default: 7723 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7724 } 7725 } 7726 7727 // conn refers to hci connection of type sco now 7728 7729 conn->state = SENT_CREATE_CONNECTION; 7730 7731 // track outgoing connection to handle command status with error 7732 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7733 (void) memcpy(hci_stack->outgoing_addr, conn->address, 6); 7734 7735 // setup_synchronous_connection? Voice setting at offset 22 7736 // TODO: compare to current setting if sco connection already active 7737 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7738 7739 // derive sco payload length from packet types 7740 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7741 break; 7742 7743 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7744 // get SCO connection 7745 reverse_bd_addr(&packet[3], addr); 7746 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7747 if (conn == NULL){ 7748 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7749 } 7750 7751 conn->state = ACCEPTED_CONNECTION_REQUEST; 7752 7753 // track outgoing connection to handle command status with error 7754 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7755 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7756 7757 // accept_synchronous_connection? Voice setting at offset 18 7758 // TODO: compare to current setting if sco connection already active 7759 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7760 7761 // derive sco payload length from packet types 7762 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7763 break; 7764 #endif 7765 7766 #ifdef ENABLE_BLE 7767 #ifdef ENABLE_LE_CENTRAL 7768 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7769 // white list used? 7770 initiator_filter_policy = packet[7]; 7771 switch (initiator_filter_policy) { 7772 case 0: 7773 // whitelist not used 7774 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7775 break; 7776 case 1: 7777 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7778 break; 7779 default: 7780 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7781 break; 7782 } 7783 // track outgoing connection 7784 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7785 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7786 break; 7787 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7788 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7789 // white list used? 7790 initiator_filter_policy = packet[3]; 7791 switch (initiator_filter_policy) { 7792 case 0: 7793 // whitelist not used 7794 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7795 break; 7796 case 1: 7797 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7798 break; 7799 default: 7800 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7801 break; 7802 } 7803 // track outgoing connection 7804 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7805 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7806 break; 7807 #endif 7808 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7809 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7810 break; 7811 #endif 7812 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7813 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7814 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7815 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7816 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7817 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7818 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7819 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7820 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7821 case HCI_OPCODE_HCI_LE_READ_PHY: 7822 case HCI_OPCODE_HCI_LE_SET_PHY: 7823 // conection handle is first command parameter 7824 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7825 break; 7826 #endif 7827 #endif /* ENABLE_BLE */ 7828 default: 7829 break; 7830 } 7831 7832 hci_stack->num_cmd_packets--; 7833 7834 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7835 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7836 uint8_t status; 7837 if (err == 0){ 7838 status = ERROR_CODE_SUCCESS; 7839 } else { 7840 status = ERROR_CODE_HARDWARE_FAILURE; 7841 } 7842 return status; 7843 } 7844 7845 // disconnect because of security block 7846 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7847 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7848 if (!connection) return; 7849 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7850 } 7851 7852 7853 // Configure Secure Simple Pairing 7854 7855 #ifdef ENABLE_CLASSIC 7856 7857 // enable will enable SSP during init 7858 void gap_ssp_set_enable(int enable){ 7859 hci_stack->ssp_enable = enable; 7860 } 7861 7862 static int hci_local_ssp_activated(void){ 7863 return gap_ssp_supported() && hci_stack->ssp_enable; 7864 } 7865 7866 // if set, BTstack will respond to io capability request using authentication requirement 7867 void gap_ssp_set_io_capability(int io_capability){ 7868 hci_stack->ssp_io_capability = io_capability; 7869 } 7870 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7871 hci_stack->ssp_authentication_requirement = authentication_requirement; 7872 } 7873 7874 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7875 void gap_ssp_set_auto_accept(int auto_accept){ 7876 hci_stack->ssp_auto_accept = auto_accept; 7877 } 7878 7879 void gap_secure_connections_enable(bool enable){ 7880 hci_stack->secure_connections_enable = enable; 7881 } 7882 bool gap_secure_connections_active(void){ 7883 return hci_stack->secure_connections_active; 7884 } 7885 7886 #endif 7887 7888 // va_list part of hci_send_cmd 7889 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7890 if (!hci_can_send_command_packet_now()){ 7891 log_error("hci_send_cmd called but cannot send packet now"); 7892 return ERROR_CODE_COMMAND_DISALLOWED; 7893 } 7894 7895 hci_reserve_packet_buffer(); 7896 hci_cmd_create_from_template(hci_stack->hci_packet_buffer, cmd, argptr); 7897 return hci_send_prepared_cmd_packet(); 7898 } 7899 7900 /** 7901 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7902 */ 7903 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7904 va_list argptr; 7905 va_start(argptr, cmd); 7906 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7907 va_end(argptr); 7908 return status; 7909 } 7910 7911 // Create various non-HCI events. 7912 // TODO: generalize, use table similar to hci_create_command 7913 7914 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7915 // dump packet 7916 if (dump) { 7917 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7918 } 7919 7920 // dispatch to all event handlers 7921 btstack_linked_list_iterator_t it; 7922 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7923 while (btstack_linked_list_iterator_has_next(&it)){ 7924 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7925 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7926 } 7927 } 7928 7929 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7930 if (!hci_stack->acl_packet_handler) return; 7931 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7932 } 7933 7934 #ifdef ENABLE_CLASSIC 7935 static void hci_notify_if_sco_can_send_now(void){ 7936 // notify SCO sender if waiting 7937 if (!hci_stack->sco_waiting_for_can_send_now) return; 7938 if (hci_can_send_sco_packet_now()){ 7939 hci_stack->sco_waiting_for_can_send_now = 0; 7940 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7941 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7942 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7943 } 7944 } 7945 7946 // parsing end emitting has been merged to reduce code size 7947 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7948 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7949 7950 uint8_t * eir_data; 7951 ad_context_t context; 7952 const uint8_t * name; 7953 uint8_t name_len; 7954 7955 if (size < 3) return; 7956 7957 int event_type = hci_event_packet_get_type(packet); 7958 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7959 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7960 7961 switch (event_type){ 7962 case HCI_EVENT_INQUIRY_RESULT: 7963 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7964 if (size != (3 + (num_responses * 14))) return; 7965 break; 7966 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7967 if (size != 257) return; 7968 if (num_responses != 1) return; 7969 break; 7970 default: 7971 return; 7972 } 7973 7974 // event[1] is set at the end 7975 int i; 7976 for (i=0; i<num_responses;i++){ 7977 memset(event, 0, sizeof(event)); 7978 event[0] = GAP_EVENT_INQUIRY_RESULT; 7979 uint8_t event_size = 27; // if name is not set by EIR 7980 7981 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7982 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7983 (void)memcpy(&event[9], 7984 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7985 3); // class of device 7986 (void)memcpy(&event[12], 7987 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7988 2); // clock offset 7989 7990 switch (event_type){ 7991 case HCI_EVENT_INQUIRY_RESULT: 7992 // 14,15,16,17 = 0, size 18 7993 break; 7994 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7995 event[14] = 1; 7996 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7997 // 16,17 = 0, size 18 7998 break; 7999 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8000 event[14] = 1; 8001 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8002 // EIR packets only contain a single inquiry response 8003 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 8004 name = NULL; 8005 // Iterate over EIR data 8006 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 8007 uint8_t data_type = ad_iterator_get_data_type(&context); 8008 uint8_t data_size = ad_iterator_get_data_len(&context); 8009 const uint8_t * data = ad_iterator_get_data(&context); 8010 // Prefer Complete Local Name over Shortened Local Name 8011 switch (data_type){ 8012 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 8013 if (name) continue; 8014 /* fall through */ 8015 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 8016 name = data; 8017 name_len = data_size; 8018 break; 8019 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8020 if (data_size != 8) break; 8021 event[16] = 1; 8022 memcpy(&event[17], data, 8); 8023 break; 8024 default: 8025 break; 8026 } 8027 } 8028 if (name){ 8029 event[25] = 1; 8030 // truncate name if needed 8031 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8032 event[26] = len; 8033 (void)memcpy(&event[27], name, len); 8034 event_size += len; 8035 } 8036 break; 8037 default: 8038 return; 8039 } 8040 event[1] = event_size - 2; 8041 hci_emit_event(event, event_size, 1); 8042 } 8043 } 8044 #endif 8045 8046 void hci_emit_state(void){ 8047 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8048 uint8_t event[3]; 8049 event[0] = BTSTACK_EVENT_STATE; 8050 event[1] = sizeof(event) - 2u; 8051 event[2] = hci_stack->state; 8052 hci_emit_event(event, sizeof(event), 1); 8053 } 8054 8055 #ifdef ENABLE_CLASSIC 8056 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8057 uint8_t event[13]; 8058 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8059 event[1] = sizeof(event) - 2; 8060 event[2] = status; 8061 little_endian_store_16(event, 3, con_handle); 8062 reverse_bd_addr(address, &event[5]); 8063 event[11] = 1; // ACL connection 8064 event[12] = 0; // encryption disabled 8065 hci_emit_event(event, sizeof(event), 1); 8066 } 8067 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8068 if (disable_l2cap_timeouts) return; 8069 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8070 uint8_t event[4]; 8071 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8072 event[1] = sizeof(event) - 2; 8073 little_endian_store_16(event, 2, conn->con_handle); 8074 hci_emit_event(event, sizeof(event), 1); 8075 } 8076 #endif 8077 8078 #ifdef ENABLE_BLE 8079 #ifdef ENABLE_LE_CENTRAL 8080 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){ 8081 uint8_t hci_event[21]; 8082 hci_event[0] = HCI_EVENT_LE_META; 8083 hci_event[1] = sizeof(hci_event) - 2u; 8084 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8085 hci_event[3] = status; 8086 little_endian_store_16(hci_event, 4, con_handle); 8087 hci_event[6] = 0; // TODO: role 8088 hci_event[7] = address_type; 8089 reverse_bd_addr(address, &hci_event[8]); 8090 little_endian_store_16(hci_event, 14, 0); // interval 8091 little_endian_store_16(hci_event, 16, 0); // latency 8092 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8093 hci_event[20] = 0; // master clock accuracy 8094 hci_emit_event(hci_event, sizeof(hci_event), 1); 8095 // emit GAP event, too 8096 uint8_t gap_event[36]; 8097 hci_create_gap_connection_complete_event(hci_event, gap_event); 8098 hci_emit_event(gap_event, sizeof(gap_event), 1); 8099 } 8100 #endif 8101 #endif 8102 8103 static void hci_emit_transport_packet_sent(void){ 8104 // notify upper stack that it might be possible to send again 8105 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8106 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 8107 } 8108 8109 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8110 uint8_t event[6]; 8111 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8112 event[1] = sizeof(event) - 2u; 8113 event[2] = 0; // status = OK 8114 little_endian_store_16(event, 3, con_handle); 8115 event[5] = reason; 8116 hci_emit_event(event, sizeof(event), 1); 8117 } 8118 8119 static void hci_emit_nr_connections_changed(void){ 8120 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8121 uint8_t event[3]; 8122 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8123 event[1] = sizeof(event) - 2u; 8124 event[2] = nr_hci_connections(); 8125 hci_emit_event(event, sizeof(event), 1); 8126 } 8127 8128 static void hci_emit_hci_open_failed(void){ 8129 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8130 uint8_t event[2]; 8131 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8132 event[1] = sizeof(event) - 2u; 8133 hci_emit_event(event, sizeof(event), 1); 8134 } 8135 8136 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8137 log_info("hci_emit_dedicated_bonding_result %u ", status); 8138 uint8_t event[9]; 8139 int pos = 0; 8140 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8141 event[pos++] = sizeof(event) - 2u; 8142 event[pos++] = status; 8143 reverse_bd_addr(address, &event[pos]); 8144 hci_emit_event(event, sizeof(event), 1); 8145 } 8146 8147 8148 #ifdef ENABLE_CLASSIC 8149 8150 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8151 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8152 uint8_t event[5]; 8153 int pos = 0; 8154 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8155 event[pos++] = sizeof(event) - 2; 8156 little_endian_store_16(event, 2, con_handle); 8157 pos += 2; 8158 event[pos++] = level; 8159 hci_emit_event(event, sizeof(event), 1); 8160 } 8161 8162 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8163 if (!connection) return LEVEL_0; 8164 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8165 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8166 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8167 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8168 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8169 // LEVEL 4 always requires 128 bit encrytion key size 8170 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8171 security_level = LEVEL_3; 8172 } 8173 return security_level; 8174 } 8175 8176 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8177 uint8_t event[4]; 8178 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8179 event[1] = sizeof(event) - 2; 8180 event[2] = discoverable; 8181 event[3] = connectable; 8182 hci_emit_event(event, sizeof(event), 1); 8183 } 8184 8185 // query if remote side supports eSCO 8186 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8187 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8188 if (!connection) return false; 8189 return (connection->remote_supported_features[0] & 1) != 0; 8190 } 8191 8192 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8193 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8194 if (!connection) return 0; 8195 return connection->remote_supported_sco_packets; 8196 } 8197 8198 static bool hci_ssp_supported(hci_connection_t * connection){ 8199 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8200 return (connection->bonding_flags & mask) == mask; 8201 } 8202 8203 // query if remote side supports SSP 8204 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8205 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8206 if (!connection) return false; 8207 return hci_ssp_supported(connection) ? 1 : 0; 8208 } 8209 8210 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8211 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8212 } 8213 8214 /** 8215 * Check if remote supported features query has completed 8216 */ 8217 bool hci_remote_features_available(hci_con_handle_t handle){ 8218 hci_connection_t * connection = hci_connection_for_handle(handle); 8219 if (!connection) return false; 8220 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8221 } 8222 8223 /** 8224 * Trigger remote supported features query 8225 */ 8226 8227 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8228 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8229 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8230 } 8231 } 8232 8233 void hci_remote_features_query(hci_con_handle_t con_handle){ 8234 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8235 if (!connection) return; 8236 hci_trigger_remote_features_for_connection(connection); 8237 hci_run(); 8238 } 8239 8240 // GAP API 8241 /** 8242 * @bbrief enable/disable bonding. default is enabled 8243 * @praram enabled 8244 */ 8245 void gap_set_bondable_mode(int enable){ 8246 hci_stack->bondable = enable ? 1 : 0; 8247 } 8248 /** 8249 * @brief Get bondable mode. 8250 * @return 1 if bondable 8251 */ 8252 int gap_get_bondable_mode(void){ 8253 return hci_stack->bondable; 8254 } 8255 8256 /** 8257 * @brief map link keys to security levels 8258 */ 8259 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8260 switch (link_key_type){ 8261 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8262 return LEVEL_4; 8263 case COMBINATION_KEY: 8264 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8265 return LEVEL_3; 8266 default: 8267 return LEVEL_2; 8268 } 8269 } 8270 8271 /** 8272 * @brief map link keys to secure connection yes/no 8273 */ 8274 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8275 switch (link_key_type){ 8276 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8277 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8278 return true; 8279 default: 8280 return false; 8281 } 8282 } 8283 8284 /** 8285 * @brief map link keys to authenticated 8286 */ 8287 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8288 switch (link_key_type){ 8289 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8290 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8291 return true; 8292 default: 8293 return false; 8294 } 8295 } 8296 8297 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8298 log_info("gap_mitm_protection_required_for_security_level %u", level); 8299 return level > LEVEL_2; 8300 } 8301 8302 /** 8303 * @brief get current security level 8304 */ 8305 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8306 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8307 if (!connection) return LEVEL_0; 8308 return gap_security_level_for_connection(connection); 8309 } 8310 8311 /** 8312 * @brief request connection to device to 8313 * @result GAP_AUTHENTICATION_RESULT 8314 */ 8315 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8316 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8317 if (!connection){ 8318 hci_emit_security_level(con_handle, LEVEL_0); 8319 return; 8320 } 8321 8322 btstack_assert(hci_is_le_connection(connection) == false); 8323 8324 // 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) 8325 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8326 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8327 requested_level = LEVEL_4; 8328 } 8329 8330 gap_security_level_t current_level = gap_security_level(con_handle); 8331 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8332 requested_level, connection->requested_security_level, current_level); 8333 8334 // authentication active if authentication request was sent or planned level > 0 8335 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8336 if (authentication_active){ 8337 // authentication already active 8338 if (connection->requested_security_level < requested_level){ 8339 // increase requested level as new level is higher 8340 // TODO: handle re-authentication when done 8341 connection->requested_security_level = requested_level; 8342 } 8343 } else { 8344 // no request active, notify if security sufficient 8345 if (requested_level <= current_level){ 8346 hci_emit_security_level(con_handle, current_level); 8347 return; 8348 } 8349 8350 // store request 8351 connection->requested_security_level = requested_level; 8352 8353 // start to authenticate connection 8354 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8355 8356 // request remote features if not already active, also trigger hci_run 8357 hci_remote_features_query(con_handle); 8358 } 8359 } 8360 8361 /** 8362 * @brief start dedicated bonding with device. disconnect after bonding 8363 * @param device 8364 * @param request MITM protection 8365 * @result GAP_DEDICATED_BONDING_COMPLETE 8366 */ 8367 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8368 8369 // create connection state machine 8370 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8371 8372 if (!connection){ 8373 return BTSTACK_MEMORY_ALLOC_FAILED; 8374 } 8375 8376 // delete link key 8377 gap_drop_link_key_for_bd_addr(device); 8378 8379 // configure LEVEL_2/3, dedicated bonding 8380 connection->state = SEND_CREATE_CONNECTION; 8381 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8382 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8383 connection->bonding_flags = BONDING_DEDICATED; 8384 8385 hci_run(); 8386 8387 return 0; 8388 } 8389 8390 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8391 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8392 if (connection == NULL){ 8393 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8394 } 8395 if (defer){ 8396 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8397 } else { 8398 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8399 // trigger disconnect 8400 hci_run(); 8401 } 8402 return ERROR_CODE_SUCCESS; 8403 } 8404 8405 void gap_set_local_name(const char * local_name){ 8406 hci_stack->local_name = local_name; 8407 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8408 // also update EIR if not set by user 8409 if (hci_stack->eir_data == NULL){ 8410 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8411 } 8412 hci_run(); 8413 } 8414 #endif 8415 8416 8417 #ifdef ENABLE_BLE 8418 8419 #ifdef ENABLE_LE_CENTRAL 8420 void gap_start_scan(void){ 8421 hci_stack->le_scanning_enabled = true; 8422 hci_run(); 8423 } 8424 8425 void gap_stop_scan(void){ 8426 hci_stack->le_scanning_enabled = false; 8427 hci_run(); 8428 } 8429 8430 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8431 hci_stack->le_scan_type = scan_type; 8432 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8433 hci_stack->le_scan_interval = scan_interval; 8434 hci_stack->le_scan_window = scan_window; 8435 hci_stack->le_scanning_param_update = true; 8436 hci_run(); 8437 } 8438 8439 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8440 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8441 } 8442 8443 void gap_set_scan_duplicate_filter(bool enabled){ 8444 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8445 } 8446 8447 void gap_set_scan_phys(uint8_t phys){ 8448 // LE Coded and LE 1M PHY 8449 hci_stack->le_scan_phys = phys & 0x05; 8450 } 8451 8452 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8453 // disallow le connection if outgoing already active 8454 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8455 log_error("le connect already active"); 8456 return ERROR_CODE_COMMAND_DISALLOWED; 8457 } 8458 8459 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8460 if (conn == NULL) { 8461 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8462 if (conn == false){ 8463 // alloc failed 8464 log_info("gap_connect: failed to alloc hci_connection_t"); 8465 return BTSTACK_MEMORY_ALLOC_FAILED; 8466 } 8467 } else { 8468 switch (conn->state) { 8469 case RECEIVED_DISCONNECTION_COMPLETE: 8470 // connection was just disconnected, reset state and allow re-connect 8471 conn->role = HCI_ROLE_MASTER; 8472 break; 8473 default: 8474 return ERROR_CODE_COMMAND_DISALLOWED; 8475 } 8476 } 8477 8478 // set le connecting state 8479 if (hci_is_le_connection_type(addr_type)){ 8480 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8481 } 8482 8483 // trigger connect 8484 log_info("gap_connect: send create connection next"); 8485 conn->state = SEND_CREATE_CONNECTION; 8486 hci_run(); 8487 return ERROR_CODE_SUCCESS; 8488 } 8489 8490 // @assumption: only a single outgoing LE Connection exists 8491 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8492 btstack_linked_item_t *it; 8493 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8494 hci_connection_t * conn = (hci_connection_t *) it; 8495 if (hci_is_le_connection(conn)){ 8496 switch (conn->state){ 8497 case SEND_CREATE_CONNECTION: 8498 case SENT_CREATE_CONNECTION: 8499 return conn; 8500 default: 8501 break; 8502 }; 8503 } 8504 } 8505 return NULL; 8506 } 8507 8508 uint8_t gap_connect_cancel(void){ 8509 hci_connection_t * conn; 8510 switch (hci_stack->le_connecting_request){ 8511 case LE_CONNECTING_IDLE: 8512 break; 8513 case LE_CONNECTING_WHITELIST: 8514 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8515 hci_run(); 8516 break; 8517 case LE_CONNECTING_DIRECT: 8518 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8519 conn = gap_get_outgoing_le_connection(); 8520 if (conn == NULL){ 8521 hci_run(); 8522 } else { 8523 switch (conn->state){ 8524 case SEND_CREATE_CONNECTION: 8525 // skip sending create connection and emit event instead 8526 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8527 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8528 btstack_memory_hci_connection_free( conn ); 8529 break; 8530 case SENT_CREATE_CONNECTION: 8531 // let hci_run_general_gap_le cancel outgoing connection 8532 hci_run(); 8533 break; 8534 default: 8535 break; 8536 } 8537 } 8538 break; 8539 default: 8540 btstack_unreachable(); 8541 break; 8542 } 8543 return ERROR_CODE_SUCCESS; 8544 } 8545 8546 /** 8547 * @brief Set connection parameters for outgoing connections 8548 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8549 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8550 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8551 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8552 * @param conn_latency, default: 4 8553 * @param supervision_timeout (unit: 10ms), default: 720 ms 8554 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8555 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8556 */ 8557 8558 void gap_set_connection_phys(uint8_t phys){ 8559 // LE Coded, LE 1M, LE 2M PHY 8560 hci_stack->le_connection_phys = phys & 7; 8561 } 8562 8563 #endif 8564 8565 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8566 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8567 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8568 hci_stack->le_connection_scan_interval = conn_scan_interval; 8569 hci_stack->le_connection_scan_window = conn_scan_window; 8570 hci_stack->le_connection_interval_min = conn_interval_min; 8571 hci_stack->le_connection_interval_max = conn_interval_max; 8572 hci_stack->le_connection_latency = conn_latency; 8573 hci_stack->le_supervision_timeout = supervision_timeout; 8574 hci_stack->le_minimum_ce_length = min_ce_length; 8575 hci_stack->le_maximum_ce_length = max_ce_length; 8576 } 8577 8578 /** 8579 * @brief Updates the connection parameters for a given LE connection 8580 * @param handle 8581 * @param conn_interval_min (unit: 1.25ms) 8582 * @param conn_interval_max (unit: 1.25ms) 8583 * @param conn_latency 8584 * @param supervision_timeout (unit: 10ms) 8585 * @return 0 if ok 8586 */ 8587 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8588 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8589 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8590 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8591 connection->le_conn_interval_min = conn_interval_min; 8592 connection->le_conn_interval_max = conn_interval_max; 8593 connection->le_conn_latency = conn_latency; 8594 connection->le_supervision_timeout = supervision_timeout; 8595 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8596 hci_run(); 8597 return 0; 8598 } 8599 8600 /** 8601 * @brief Request an update of the connection parameter for a given LE connection 8602 * @param handle 8603 * @param conn_interval_min (unit: 1.25ms) 8604 * @param conn_interval_max (unit: 1.25ms) 8605 * @param conn_latency 8606 * @param supervision_timeout (unit: 10ms) 8607 * @return 0 if ok 8608 */ 8609 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8610 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8611 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8612 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8613 connection->le_conn_interval_min = conn_interval_min; 8614 connection->le_conn_interval_max = conn_interval_max; 8615 connection->le_conn_latency = conn_latency; 8616 connection->le_supervision_timeout = supervision_timeout; 8617 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8618 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8619 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8620 return 0; 8621 } 8622 8623 #ifdef ENABLE_LE_PERIPHERAL 8624 8625 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8626 static void hci_assert_advertisement_set_0_ready(void){ 8627 // force advertising set creation for legacy LE Advertising 8628 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8629 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8630 } 8631 } 8632 #endif 8633 8634 /** 8635 * @brief Set Advertisement Data 8636 * @param advertising_data_length 8637 * @param advertising_data (max 31 octets) 8638 * @note data is not copied, pointer has to stay valid 8639 */ 8640 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8641 hci_stack->le_advertisements_data_len = advertising_data_length; 8642 hci_stack->le_advertisements_data = advertising_data; 8643 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8644 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8645 hci_assert_advertisement_set_0_ready(); 8646 #endif 8647 hci_run(); 8648 } 8649 8650 /** 8651 * @brief Set Scan Response Data 8652 * @param advertising_data_length 8653 * @param advertising_data (max 31 octets) 8654 * @note data is not copied, pointer has to stay valid 8655 */ 8656 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8657 hci_stack->le_scan_response_data_len = scan_response_data_length; 8658 hci_stack->le_scan_response_data = scan_response_data; 8659 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8660 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8661 hci_assert_advertisement_set_0_ready(); 8662 #endif 8663 hci_run(); 8664 } 8665 8666 /** 8667 * @brief Set Advertisement Parameters 8668 * @param adv_int_min 8669 * @param adv_int_max 8670 * @param adv_type 8671 * @param direct_address_type 8672 * @param direct_address 8673 * @param channel_map 8674 * @param filter_policy 8675 * 8676 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8677 */ 8678 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8679 uint8_t direct_address_typ, bd_addr_t direct_address, 8680 uint8_t channel_map, uint8_t filter_policy) { 8681 8682 hci_stack->le_advertisements_interval_min = adv_int_min; 8683 hci_stack->le_advertisements_interval_max = adv_int_max; 8684 hci_stack->le_advertisements_type = adv_type; 8685 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8686 hci_stack->le_advertisements_channel_map = channel_map; 8687 hci_stack->le_advertisements_filter_policy = filter_policy; 8688 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8689 6); 8690 8691 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8692 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8693 hci_run(); 8694 } 8695 8696 /** 8697 * @brief Enable/Disable Advertisements 8698 * @param enabled 8699 */ 8700 void gap_advertisements_enable(int enabled){ 8701 if (enabled == 0){ 8702 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8703 } else { 8704 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8705 } 8706 hci_update_advertisements_enabled_for_current_roles(); 8707 hci_run(); 8708 } 8709 8710 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8711 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8712 btstack_linked_list_iterator_t it; 8713 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8714 while (btstack_linked_list_iterator_has_next(&it)){ 8715 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8716 if ( item->advertising_handle == advertising_handle ) { 8717 return item; 8718 } 8719 } 8720 return NULL; 8721 } 8722 8723 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8724 hci_stack->le_resolvable_private_address_update_s = update_s; 8725 hci_run(); 8726 return ERROR_CODE_SUCCESS; 8727 } 8728 8729 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8730 // find free advertisement handle 8731 uint8_t advertisement_handle; 8732 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8733 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8734 } 8735 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8736 // clear 8737 memset(storage, 0, sizeof(le_advertising_set_t)); 8738 // copy params 8739 storage->advertising_handle = advertisement_handle; 8740 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8741 // add to list 8742 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8743 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8744 *out_advertising_handle = advertisement_handle; 8745 // set tasks and start 8746 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8747 hci_run(); 8748 return ERROR_CODE_SUCCESS; 8749 } 8750 8751 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8752 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8753 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8754 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8755 // set tasks and start 8756 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8757 hci_run(); 8758 return ERROR_CODE_SUCCESS; 8759 } 8760 8761 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8762 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8763 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8764 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8765 return ERROR_CODE_SUCCESS; 8766 } 8767 8768 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8769 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8770 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8771 memcpy(advertising_set->random_address, random_address, 6); 8772 // set tasks and start 8773 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8774 hci_run(); 8775 return ERROR_CODE_SUCCESS; 8776 } 8777 8778 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8779 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8780 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8781 advertising_set->adv_data = advertising_data; 8782 advertising_set->adv_data_len = advertising_data_length; 8783 // set tasks and start 8784 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8785 hci_run(); 8786 return ERROR_CODE_SUCCESS; 8787 } 8788 8789 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){ 8790 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8791 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8792 advertising_set->scan_data = scan_response_data; 8793 advertising_set->scan_data_len = scan_response_data_length; 8794 // set tasks and start 8795 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8796 hci_run(); 8797 return ERROR_CODE_SUCCESS; 8798 } 8799 8800 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8801 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8802 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8803 advertising_set->enable_timeout = timeout; 8804 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8805 // set tasks and start 8806 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8807 hci_run(); 8808 return ERROR_CODE_SUCCESS; 8809 } 8810 8811 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8812 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8813 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8814 // set tasks and start 8815 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8816 hci_run(); 8817 return ERROR_CODE_SUCCESS; 8818 } 8819 8820 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8821 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8822 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8823 // set tasks and start 8824 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8825 hci_run(); 8826 return ERROR_CODE_SUCCESS; 8827 } 8828 8829 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8830 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8831 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8832 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8833 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8834 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8835 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8836 // set tasks and start 8837 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8838 hci_run(); 8839 return ERROR_CODE_SUCCESS; 8840 } 8841 8842 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8843 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8844 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8845 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8846 return ERROR_CODE_SUCCESS; 8847 } 8848 8849 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8850 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8851 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8852 advertising_set->periodic_data = periodic_data; 8853 advertising_set->periodic_data_len = periodic_data_length; 8854 // set tasks and start 8855 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8856 hci_run(); 8857 return ERROR_CODE_SUCCESS; 8858 } 8859 8860 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8861 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8862 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8863 // set tasks and start 8864 advertising_set->periodic_include_adi = include_adi; 8865 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8866 hci_run(); 8867 return ERROR_CODE_SUCCESS; 8868 } 8869 8870 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8871 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8872 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8873 // set tasks and start 8874 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8875 hci_run(); 8876 return ERROR_CODE_SUCCESS; 8877 } 8878 8879 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8880 hci_stack->le_past_mode = mode; 8881 hci_stack->le_past_skip = skip; 8882 hci_stack->le_past_sync_timeout = sync_timeout; 8883 hci_stack->le_past_cte_type = cte_type; 8884 hci_stack->le_past_set_default_params = true; 8885 hci_run(); 8886 return ERROR_CODE_SUCCESS; 8887 } 8888 8889 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8890 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8891 if (hci_connection == NULL){ 8892 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8893 } 8894 hci_connection->le_past_sync_handle = sync_handle; 8895 hci_connection->le_past_service_data = service_data; 8896 hci_run(); 8897 return ERROR_CODE_SUCCESS; 8898 } 8899 8900 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8901 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8902 if (hci_connection == NULL){ 8903 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8904 } 8905 hci_connection->le_past_advertising_handle = advertising_handle; 8906 hci_connection->le_past_service_data = service_data; 8907 hci_run(); 8908 return ERROR_CODE_SUCCESS; 8909 } 8910 8911 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8912 8913 #endif 8914 8915 #endif 8916 8917 void hci_le_set_own_address_type(uint8_t own_address_type){ 8918 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8919 if (own_address_type == hci_stack->le_own_addr_type) return; 8920 hci_stack->le_own_addr_type = own_address_type; 8921 8922 #ifdef ENABLE_LE_PERIPHERAL 8923 // update advertisement parameters, too 8924 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8925 hci_run(); 8926 #endif 8927 #ifdef ENABLE_LE_CENTRAL 8928 // note: we don't update scan parameters or modify ongoing connection attempts 8929 #endif 8930 } 8931 8932 void hci_le_random_address_set(const bd_addr_t random_address){ 8933 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 8934 memcpy(hci_stack->le_random_address, random_address, 6); 8935 hci_stack->le_random_address_set = true; 8936 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 8937 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8938 if (hci_le_extended_advertising_supported()){ 8939 hci_assert_advertisement_set_0_ready(); 8940 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8941 } 8942 #endif 8943 hci_run(); 8944 } 8945 8946 #endif 8947 8948 uint8_t gap_disconnect(hci_con_handle_t handle){ 8949 hci_connection_t * conn = hci_connection_for_handle(handle); 8950 if (!conn){ 8951 hci_emit_disconnection_complete(handle, 0); 8952 return 0; 8953 } 8954 // ignore if already disconnected 8955 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8956 return 0; 8957 } 8958 conn->state = SEND_DISCONNECT; 8959 hci_run(); 8960 return 0; 8961 } 8962 8963 int gap_read_rssi(hci_con_handle_t con_handle){ 8964 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8965 if (hci_connection == NULL) return 0; 8966 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8967 hci_run(); 8968 return 1; 8969 } 8970 8971 /** 8972 * @brief Get connection type 8973 * @param con_handle 8974 * @result connection_type 8975 */ 8976 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8977 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8978 if (!conn) return GAP_CONNECTION_INVALID; 8979 switch (conn->address_type){ 8980 case BD_ADDR_TYPE_LE_PUBLIC: 8981 case BD_ADDR_TYPE_LE_RANDOM: 8982 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8983 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8984 return GAP_CONNECTION_LE; 8985 case BD_ADDR_TYPE_SCO: 8986 return GAP_CONNECTION_SCO; 8987 case BD_ADDR_TYPE_ACL: 8988 return GAP_CONNECTION_ACL; 8989 default: 8990 return GAP_CONNECTION_INVALID; 8991 } 8992 } 8993 8994 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8995 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8996 if (!conn) return HCI_ROLE_INVALID; 8997 return (hci_role_t) conn->role; 8998 } 8999 9000 9001 #ifdef ENABLE_CLASSIC 9002 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 9003 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9004 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9005 conn->request_role = role; 9006 hci_run(); 9007 return ERROR_CODE_SUCCESS; 9008 } 9009 #endif 9010 9011 #ifdef ENABLE_BLE 9012 9013 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){ 9014 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9015 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9016 9017 conn->le_phy_update_all_phys = all_phys; 9018 conn->le_phy_update_tx_phys = tx_phys; 9019 conn->le_phy_update_rx_phys = rx_phys; 9020 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9021 9022 hci_run(); 9023 9024 return 0; 9025 } 9026 9027 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9028 9029 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9030 // incorrect configuration: 9031 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9032 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9033 btstack_assert(false); 9034 #endif 9035 9036 // check if already in list 9037 btstack_linked_list_iterator_t it; 9038 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9039 while (btstack_linked_list_iterator_has_next(&it)) { 9040 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9041 if (entry->address_type != address_type) { 9042 continue; 9043 } 9044 if (memcmp(entry->address, address, 6) != 0) { 9045 continue; 9046 } 9047 9048 // if already on controller: 9049 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9050 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9051 // drop remove request 9052 entry->state = LE_WHITELIST_ON_CONTROLLER; 9053 return ERROR_CODE_SUCCESS; 9054 } else { 9055 // disallow as already on controller 9056 return ERROR_CODE_COMMAND_DISALLOWED; 9057 } 9058 } 9059 9060 // assume scheduled to add 9061 return ERROR_CODE_COMMAND_DISALLOWED; 9062 } 9063 9064 // alloc and add to list 9065 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9066 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9067 entry->address_type = address_type; 9068 (void)memcpy(entry->address, address, 6); 9069 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9070 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9071 return ERROR_CODE_SUCCESS; 9072 } 9073 9074 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9075 btstack_linked_list_iterator_t it; 9076 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9077 while (btstack_linked_list_iterator_has_next(&it)){ 9078 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9079 if (entry->address_type != address_type) { 9080 continue; 9081 } 9082 if (memcmp(entry->address, address, 6) != 0) { 9083 continue; 9084 } 9085 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9086 // remove from controller if already present 9087 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9088 } else { 9089 // directly remove entry from whitelist 9090 btstack_linked_list_iterator_remove(&it); 9091 btstack_memory_whitelist_entry_free(entry); 9092 } 9093 return ERROR_CODE_SUCCESS; 9094 } 9095 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9096 } 9097 9098 static void hci_whitelist_clear(void){ 9099 btstack_linked_list_iterator_t it; 9100 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9101 while (btstack_linked_list_iterator_has_next(&it)){ 9102 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9103 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9104 // remove from controller if already present 9105 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9106 continue; 9107 } 9108 // directly remove entry from whitelist 9109 btstack_linked_list_iterator_remove(&it); 9110 btstack_memory_whitelist_entry_free(entry); 9111 } 9112 } 9113 9114 /** 9115 * @brief Clear Whitelist 9116 * @return 0 if ok 9117 */ 9118 uint8_t gap_whitelist_clear(void){ 9119 hci_whitelist_clear(); 9120 hci_run(); 9121 return ERROR_CODE_SUCCESS; 9122 } 9123 9124 /** 9125 * @brief Add Device to Whitelist 9126 * @param address_typ 9127 * @param address 9128 * @return 0 if ok 9129 */ 9130 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9131 uint8_t status = hci_whitelist_add(address_type, address); 9132 if (status){ 9133 return status; 9134 } 9135 hci_run(); 9136 return ERROR_CODE_SUCCESS; 9137 } 9138 9139 /** 9140 * @brief Remove Device from Whitelist 9141 * @param address_typ 9142 * @param address 9143 * @return 0 if ok 9144 */ 9145 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9146 uint8_t status = hci_whitelist_remove(address_type, address); 9147 if (status){ 9148 return status; 9149 } 9150 hci_run(); 9151 return ERROR_CODE_SUCCESS; 9152 } 9153 9154 #ifdef ENABLE_LE_CENTRAL 9155 /** 9156 * @brief Connect with Whitelist 9157 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9158 * @return - if ok 9159 */ 9160 uint8_t gap_connect_with_whitelist(void){ 9161 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9162 return ERROR_CODE_COMMAND_DISALLOWED; 9163 } 9164 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9165 hci_run(); 9166 return ERROR_CODE_SUCCESS; 9167 } 9168 9169 /** 9170 * @brief Auto Connection Establishment - Start Connecting to device 9171 * @param address_typ 9172 * @param address 9173 * @return 0 if ok 9174 */ 9175 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9176 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9177 return ERROR_CODE_COMMAND_DISALLOWED; 9178 } 9179 9180 uint8_t status = hci_whitelist_add(address_type, address); 9181 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9182 return status; 9183 } 9184 9185 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9186 9187 hci_run(); 9188 return ERROR_CODE_SUCCESS; 9189 } 9190 9191 /** 9192 * @brief Auto Connection Establishment - Stop Connecting to device 9193 * @param address_typ 9194 * @param address 9195 * @return 0 if ok 9196 */ 9197 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9198 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9199 return ERROR_CODE_COMMAND_DISALLOWED; 9200 } 9201 9202 hci_whitelist_remove(address_type, address); 9203 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9204 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9205 } 9206 hci_run(); 9207 return 0; 9208 } 9209 9210 /** 9211 * @brief Auto Connection Establishment - Stop everything 9212 * @note Convenience function to stop all active auto connection attempts 9213 */ 9214 uint8_t gap_auto_connection_stop_all(void){ 9215 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9216 return ERROR_CODE_COMMAND_DISALLOWED; 9217 } 9218 hci_whitelist_clear(); 9219 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9220 hci_run(); 9221 return ERROR_CODE_SUCCESS; 9222 } 9223 9224 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9225 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9226 if (!conn) return 0; 9227 return conn->le_connection_interval; 9228 } 9229 #endif 9230 #endif 9231 9232 #ifdef ENABLE_CLASSIC 9233 /** 9234 * @brief Set Extended Inquiry Response data 9235 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9236 * @note has to be done before stack starts up 9237 */ 9238 void gap_set_extended_inquiry_response(const uint8_t * data){ 9239 hci_stack->eir_data = data; 9240 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9241 hci_run(); 9242 } 9243 9244 /** 9245 * @brief Start GAP Classic Inquiry 9246 * @param duration in 1.28s units 9247 * @return 0 if ok 9248 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9249 */ 9250 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9251 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9252 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9253 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9254 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9255 } 9256 hci_stack->inquiry_state = duration_in_1280ms_units; 9257 hci_stack->inquiry_max_period_length = 0; 9258 hci_stack->inquiry_min_period_length = 0; 9259 hci_run(); 9260 return 0; 9261 } 9262 9263 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9264 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9265 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9266 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9267 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9268 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9269 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9270 9271 hci_stack->inquiry_state = duration; 9272 hci_stack->inquiry_max_period_length = max_period_length; 9273 hci_stack->inquiry_min_period_length = min_period_length; 9274 hci_run(); 9275 return 0; 9276 } 9277 9278 /** 9279 * @brief Stop GAP Classic Inquiry 9280 * @return 0 if ok 9281 */ 9282 int gap_inquiry_stop(void){ 9283 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9284 // emit inquiry complete event, before it even started 9285 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9286 hci_emit_event(event, sizeof(event), 1); 9287 return 0; 9288 } 9289 switch (hci_stack->inquiry_state){ 9290 case GAP_INQUIRY_STATE_ACTIVE: 9291 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9292 hci_run(); 9293 return ERROR_CODE_SUCCESS; 9294 case GAP_INQUIRY_STATE_PERIODIC: 9295 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9296 hci_run(); 9297 return ERROR_CODE_SUCCESS; 9298 default: 9299 return ERROR_CODE_COMMAND_DISALLOWED; 9300 } 9301 } 9302 9303 void gap_inquiry_set_lap(uint32_t lap){ 9304 hci_stack->inquiry_lap = lap; 9305 } 9306 9307 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9308 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9309 hci_stack->inquiry_scan_window = inquiry_scan_window; 9310 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9311 hci_run(); 9312 } 9313 9314 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9315 { 9316 hci_stack->inquiry_tx_power_level = tx_power; 9317 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9318 hci_run(); 9319 } 9320 9321 9322 /** 9323 * @brief Remote Name Request 9324 * @param addr 9325 * @param page_scan_repetition_mode 9326 * @param clock_offset only used when bit 15 is set 9327 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9328 */ 9329 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9330 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9331 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9332 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9333 hci_stack->remote_name_clock_offset = clock_offset; 9334 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9335 hci_run(); 9336 return 0; 9337 } 9338 9339 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9340 hci_stack->gap_pairing_state = state; 9341 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9342 hci_run(); 9343 return 0; 9344 } 9345 9346 /** 9347 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9348 * @param addr 9349 * @param pin_data 9350 * @param pin_len 9351 * @return 0 if ok 9352 */ 9353 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9354 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9355 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9356 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9357 hci_stack->gap_pairing_pin_len = pin_len; 9358 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9359 } 9360 9361 /** 9362 * @brief Legacy Pairing Pin Code Response 9363 * @param addr 9364 * @param pin 9365 * @return 0 if ok 9366 */ 9367 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9368 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9369 } 9370 9371 /** 9372 * @brief Abort Legacy Pairing 9373 * @param addr 9374 * @param pin 9375 * @return 0 if ok 9376 */ 9377 int gap_pin_code_negative(bd_addr_t addr){ 9378 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9379 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9380 } 9381 9382 /** 9383 * @brief SSP Passkey Response 9384 * @param addr 9385 * @param passkey 9386 * @return 0 if ok 9387 */ 9388 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9389 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9390 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9391 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9392 } 9393 9394 /** 9395 * @brief Abort SSP Passkey Entry/Pairing 9396 * @param addr 9397 * @param pin 9398 * @return 0 if ok 9399 */ 9400 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9401 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9402 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9403 } 9404 9405 /** 9406 * @brief Accept SSP Numeric Comparison 9407 * @param addr 9408 * @param passkey 9409 * @return 0 if ok 9410 */ 9411 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9412 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9413 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9414 } 9415 9416 /** 9417 * @brief Abort SSP Numeric Comparison/Pairing 9418 * @param addr 9419 * @param pin 9420 * @return 0 if ok 9421 */ 9422 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9423 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9424 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9425 } 9426 9427 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9428 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9429 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9430 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9431 connectionSetAuthenticationFlags(conn, flag); 9432 hci_run(); 9433 return ERROR_CODE_SUCCESS; 9434 } 9435 #endif 9436 9437 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9438 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9439 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9440 } 9441 9442 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9443 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9444 } 9445 #endif 9446 9447 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9448 /** 9449 * @brief Report Remote OOB Data 9450 * @param bd_addr 9451 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9452 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9453 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9454 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9455 */ 9456 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){ 9457 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9458 if (connection == NULL) { 9459 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9460 } 9461 connection->classic_oob_c_192 = c_192; 9462 connection->classic_oob_r_192 = r_192; 9463 9464 // ignore P-256 if not supported by us 9465 if (hci_stack->secure_connections_active){ 9466 connection->classic_oob_c_256 = c_256; 9467 connection->classic_oob_r_256 = r_256; 9468 } 9469 9470 return ERROR_CODE_SUCCESS; 9471 } 9472 /** 9473 * @brief Generate new OOB data 9474 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9475 */ 9476 void gap_ssp_generate_oob_data(void){ 9477 hci_stack->classic_read_local_oob_data = true; 9478 hci_run(); 9479 } 9480 9481 #endif 9482 9483 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9484 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9485 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9486 if (connection == NULL) { 9487 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9488 } 9489 9490 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9491 connection->link_key_type = type; 9492 9493 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9494 } 9495 9496 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9497 /** 9498 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9499 * @param inquiry_mode see bluetooth_defines.h 9500 */ 9501 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9502 hci_stack->inquiry_mode = inquiry_mode; 9503 } 9504 9505 /** 9506 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9507 */ 9508 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9509 hci_stack->sco_voice_setting = voice_setting; 9510 } 9511 9512 /** 9513 * @brief Get SCO Voice Setting 9514 * @return current voice setting 9515 */ 9516 uint16_t hci_get_sco_voice_setting(void){ 9517 return hci_stack->sco_voice_setting; 9518 } 9519 9520 static int hci_have_usb_transport(void){ 9521 if (!hci_stack->hci_transport) return 0; 9522 const char * transport_name = hci_stack->hci_transport->name; 9523 if (!transport_name) return 0; 9524 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9525 } 9526 9527 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9528 uint16_t sco_packet_length = 0; 9529 9530 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9531 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9532 int multiplier; 9533 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9534 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9535 multiplier = 2; 9536 } else { 9537 multiplier = 1; 9538 } 9539 #endif 9540 9541 #ifdef ENABLE_SCO_OVER_HCI 9542 if (hci_have_usb_transport()){ 9543 // see Core Spec for H2 USB Transfer. 9544 // 3 byte SCO header + 24 bytes per connection 9545 // @note multiple sco connections not supported currently 9546 sco_packet_length = 3 + 24 * multiplier; 9547 } else { 9548 // 3 byte SCO header + SCO packet length over the air 9549 sco_packet_length = 3 + payload_size * multiplier; 9550 // assert that it still fits inside an SCO buffer 9551 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9552 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9553 } 9554 } 9555 #endif 9556 #ifdef HAVE_SCO_TRANSPORT 9557 // 3 byte SCO header + SCO packet length over the air 9558 sco_packet_length = 3 + payload_size * multiplier; 9559 // assert that it still fits inside an SCO buffer 9560 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9561 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9562 } 9563 #endif 9564 return sco_packet_length; 9565 } 9566 9567 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9568 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9569 if (connection != NULL){ 9570 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9571 } 9572 return 0; 9573 } 9574 9575 uint16_t hci_get_sco_packet_length(void){ 9576 btstack_linked_list_iterator_t it; 9577 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9578 while (btstack_linked_list_iterator_has_next(&it)){ 9579 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9580 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9581 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9582 } 9583 } 9584 return 0; 9585 } 9586 9587 /** 9588 * @brief Sets the master/slave policy 9589 * @param policy (0: attempt to become master, 1: let connecting device decide) 9590 */ 9591 void hci_set_master_slave_policy(uint8_t policy){ 9592 hci_stack->master_slave_policy = policy; 9593 } 9594 9595 #endif 9596 9597 HCI_STATE hci_get_state(void){ 9598 return hci_stack->state; 9599 } 9600 9601 #ifdef ENABLE_CLASSIC 9602 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9603 hci_stack->gap_classic_accept_callback = accept_callback; 9604 } 9605 #endif 9606 9607 /** 9608 * @brief Set callback for Bluetooth Hardware Error 9609 */ 9610 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9611 hci_stack->hardware_error_callback = fn; 9612 } 9613 9614 void hci_disconnect_all(void){ 9615 btstack_linked_list_iterator_t it; 9616 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9617 while (btstack_linked_list_iterator_has_next(&it)){ 9618 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9619 if (con->state == SENT_DISCONNECT) continue; 9620 con->state = SEND_DISCONNECT; 9621 } 9622 hci_run(); 9623 } 9624 9625 uint16_t hci_get_manufacturer(void){ 9626 return hci_stack->manufacturer; 9627 } 9628 9629 #ifdef ENABLE_BLE 9630 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9631 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9632 if (!hci_con) return NULL; 9633 return &hci_con->sm_connection; 9634 } 9635 9636 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9637 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9638 #endif 9639 9640 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9641 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9642 if (hci_connection == NULL) return 0; 9643 if (hci_is_le_connection(hci_connection)){ 9644 #ifdef ENABLE_BLE 9645 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9646 if (sm_conn->sm_connection_encrypted != 0u) { 9647 return sm_conn->sm_actual_encryption_key_size; 9648 } 9649 #endif 9650 } else { 9651 #ifdef ENABLE_CLASSIC 9652 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9653 return hci_connection->encryption_key_size; 9654 } 9655 #endif 9656 } 9657 return 0; 9658 } 9659 9660 bool gap_authenticated(hci_con_handle_t con_handle){ 9661 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9662 if (hci_connection == NULL) return false; 9663 9664 switch (hci_connection->address_type){ 9665 #ifdef ENABLE_BLE 9666 case BD_ADDR_TYPE_LE_PUBLIC: 9667 case BD_ADDR_TYPE_LE_RANDOM: 9668 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9669 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9670 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9671 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9672 #endif 9673 #ifdef ENABLE_CLASSIC 9674 case BD_ADDR_TYPE_SCO: 9675 case BD_ADDR_TYPE_ACL: 9676 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9677 #endif 9678 default: 9679 return false; 9680 } 9681 } 9682 9683 bool gap_secure_connection(hci_con_handle_t con_handle){ 9684 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9685 if (hci_connection == NULL) return 0; 9686 9687 switch (hci_connection->address_type){ 9688 #ifdef ENABLE_BLE 9689 case BD_ADDR_TYPE_LE_PUBLIC: 9690 case BD_ADDR_TYPE_LE_RANDOM: 9691 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9692 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9693 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9694 return hci_connection->sm_connection.sm_connection_sc; 9695 #endif 9696 #ifdef ENABLE_CLASSIC 9697 case BD_ADDR_TYPE_SCO: 9698 case BD_ADDR_TYPE_ACL: 9699 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9700 #endif 9701 default: 9702 return false; 9703 } 9704 } 9705 9706 bool gap_bonded(hci_con_handle_t con_handle){ 9707 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9708 if (hci_connection == NULL) return 0; 9709 9710 #ifdef ENABLE_CLASSIC 9711 link_key_t link_key; 9712 link_key_type_t link_key_type; 9713 #endif 9714 switch (hci_connection->address_type){ 9715 #ifdef ENABLE_BLE 9716 case BD_ADDR_TYPE_LE_PUBLIC: 9717 case BD_ADDR_TYPE_LE_RANDOM: 9718 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9719 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9720 return hci_connection->sm_connection.sm_le_db_index >= 0; 9721 #endif 9722 #ifdef ENABLE_CLASSIC 9723 case BD_ADDR_TYPE_SCO: 9724 case BD_ADDR_TYPE_ACL: 9725 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9726 #endif 9727 default: 9728 return false; 9729 } 9730 } 9731 9732 #ifdef ENABLE_BLE 9733 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9734 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9735 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9736 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9737 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9738 return sm_conn->sm_connection_authorization_state; 9739 } 9740 #endif 9741 9742 #ifdef ENABLE_CLASSIC 9743 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){ 9744 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9745 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9746 conn->sniff_min_interval = sniff_min_interval; 9747 conn->sniff_max_interval = sniff_max_interval; 9748 conn->sniff_attempt = sniff_attempt; 9749 conn->sniff_timeout = sniff_timeout; 9750 hci_run(); 9751 return 0; 9752 } 9753 9754 /** 9755 * @brief Exit Sniff mode 9756 * @param con_handle 9757 @ @return 0 if ok 9758 */ 9759 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9760 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9761 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9762 conn->sniff_min_interval = 0xffff; 9763 hci_run(); 9764 return 0; 9765 } 9766 9767 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){ 9768 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9769 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9770 conn->sniff_subrating_max_latency = max_latency; 9771 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9772 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9773 hci_run(); 9774 return ERROR_CODE_SUCCESS; 9775 } 9776 9777 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){ 9778 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9779 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9780 conn->qos_service_type = service_type; 9781 conn->qos_token_rate = token_rate; 9782 conn->qos_peak_bandwidth = peak_bandwidth; 9783 conn->qos_latency = latency; 9784 conn->qos_delay_variation = delay_variation; 9785 hci_run(); 9786 return ERROR_CODE_SUCCESS; 9787 } 9788 9789 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9790 hci_stack->new_page_scan_interval = page_scan_interval; 9791 hci_stack->new_page_scan_window = page_scan_window; 9792 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9793 hci_run(); 9794 } 9795 9796 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9797 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9798 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9799 hci_run(); 9800 } 9801 9802 void gap_set_page_timeout(uint16_t page_timeout){ 9803 hci_stack->page_timeout = page_timeout; 9804 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9805 hci_run(); 9806 } 9807 9808 #endif 9809 9810 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9811 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9812 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9813 if (le_device_db_index >= le_device_db_max_count()) return; 9814 uint8_t offset = le_device_db_index >> 3; 9815 uint8_t mask = 1 << (le_device_db_index & 7); 9816 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9817 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9818 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9819 // note: go back to remove entries, otherwise, a remove + add will skip the add 9820 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9821 } 9822 } 9823 9824 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9825 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9826 if (le_device_db_index >= le_device_db_max_count()) return; 9827 uint8_t offset = le_device_db_index >> 3; 9828 uint8_t mask = 1 << (le_device_db_index & 7); 9829 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9830 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9831 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9832 } 9833 } 9834 9835 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9836 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9837 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9838 } 9839 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9840 // restart le resolving list update 9841 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9842 } 9843 return ERROR_CODE_SUCCESS; 9844 } 9845 9846 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9847 hci_stack->le_privacy_mode = privacy_mode; 9848 } 9849 #endif 9850 9851 #ifdef ENABLE_BLE 9852 #ifdef ENABLE_LE_CENTRAL 9853 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9854 9855 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9856 9857 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9858 // incorrect configuration: 9859 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9860 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9861 btstack_assert(false); 9862 #endif 9863 9864 // check if already in list 9865 btstack_linked_list_iterator_t it; 9866 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9867 while (btstack_linked_list_iterator_has_next(&it)) { 9868 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9869 if (entry->sid != advertising_sid) { 9870 continue; 9871 } 9872 if (entry->address_type != address_type) { 9873 continue; 9874 } 9875 if (memcmp(entry->address, address, 6) != 0) { 9876 continue; 9877 } 9878 // disallow if already scheduled to add 9879 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9880 return ERROR_CODE_COMMAND_DISALLOWED; 9881 } 9882 // still on controller, but scheduled to remove -> re-add 9883 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9884 return ERROR_CODE_SUCCESS; 9885 } 9886 // alloc and add to list 9887 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9888 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9889 entry->sid = advertising_sid; 9890 entry->address_type = address_type; 9891 (void)memcpy(entry->address, address, 6); 9892 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9893 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9894 return ERROR_CODE_SUCCESS; 9895 } 9896 9897 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9898 btstack_linked_list_iterator_t it; 9899 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9900 while (btstack_linked_list_iterator_has_next(&it)){ 9901 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9902 if (entry->sid != advertising_sid) { 9903 continue; 9904 } 9905 if (entry->address_type != address_type) { 9906 continue; 9907 } 9908 if (memcmp(entry->address, address, 6) != 0) { 9909 continue; 9910 } 9911 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9912 // remove from controller if already present 9913 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9914 } else { 9915 // directly remove entry from whitelist 9916 btstack_linked_list_iterator_remove(&it); 9917 btstack_memory_periodic_advertiser_list_entry_free(entry); 9918 } 9919 return ERROR_CODE_SUCCESS; 9920 } 9921 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9922 } 9923 9924 static void hci_periodic_advertiser_list_clear(void){ 9925 btstack_linked_list_iterator_t it; 9926 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9927 while (btstack_linked_list_iterator_has_next(&it)){ 9928 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9929 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9930 // remove from controller if already present 9931 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9932 continue; 9933 } 9934 // directly remove entry from whitelist 9935 btstack_linked_list_iterator_remove(&it); 9936 btstack_memory_periodic_advertiser_list_entry_free(entry); 9937 } 9938 } 9939 9940 uint8_t gap_periodic_advertiser_list_clear(void){ 9941 hci_periodic_advertiser_list_clear(); 9942 hci_run(); 9943 return ERROR_CODE_SUCCESS; 9944 } 9945 9946 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9947 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9948 if (status){ 9949 return status; 9950 } 9951 hci_run(); 9952 return ERROR_CODE_SUCCESS; 9953 } 9954 9955 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9956 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9957 if (status){ 9958 return status; 9959 } 9960 hci_run(); 9961 return ERROR_CODE_SUCCESS; 9962 } 9963 9964 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9965 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9966 // abort if already active 9967 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9968 return ERROR_CODE_COMMAND_DISALLOWED; 9969 } 9970 // store request 9971 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9972 hci_stack->le_periodic_sync_options = options; 9973 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9974 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9975 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9976 hci_stack->le_periodic_sync_skip = skip; 9977 hci_stack->le_periodic_sync_timeout = sync_timeout; 9978 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9979 9980 hci_run(); 9981 return ERROR_CODE_SUCCESS; 9982 } 9983 9984 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9985 // abort if not requested 9986 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9987 return ERROR_CODE_COMMAND_DISALLOWED; 9988 } 9989 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9990 hci_run(); 9991 return ERROR_CODE_SUCCESS; 9992 } 9993 9994 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9995 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9996 return ERROR_CODE_COMMAND_DISALLOWED; 9997 } 9998 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9999 hci_run(); 10000 return ERROR_CODE_SUCCESS; 10001 } 10002 10003 #endif 10004 #endif 10005 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 10006 static hci_iso_stream_t * 10007 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 10008 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 10009 if (iso_stream != NULL){ 10010 iso_stream->iso_type = iso_type; 10011 iso_stream->state = state; 10012 iso_stream->group_id = group_id; 10013 iso_stream->stream_id = stream_id; 10014 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 10015 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 10016 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10017 } 10018 return iso_stream; 10019 } 10020 10021 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10022 btstack_linked_list_iterator_t it; 10023 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10024 while (btstack_linked_list_iterator_has_next(&it)){ 10025 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10026 if (iso_stream->cis_handle == con_handle ) { 10027 return iso_stream; 10028 } 10029 } 10030 return NULL; 10031 } 10032 10033 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10034 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10035 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10036 btstack_memory_hci_iso_stream_free(iso_stream); 10037 } 10038 10039 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10040 btstack_linked_list_iterator_t it; 10041 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10042 while (btstack_linked_list_iterator_has_next(&it)){ 10043 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10044 if ((iso_stream->group_id == group_id) && 10045 (iso_stream->iso_type == iso_type)){ 10046 btstack_linked_list_iterator_remove(&it); 10047 btstack_memory_hci_iso_stream_free(iso_stream); 10048 } 10049 } 10050 } 10051 10052 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10053 btstack_linked_list_iterator_t it; 10054 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10055 while (btstack_linked_list_iterator_has_next(&it)){ 10056 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10057 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10058 (iso_stream->group_id == group_id)){ 10059 btstack_linked_list_iterator_remove(&it); 10060 btstack_memory_hci_iso_stream_free(iso_stream); 10061 } 10062 } 10063 } 10064 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10065 btstack_linked_list_iterator_t it; 10066 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10067 while (btstack_linked_list_iterator_has_next(&it)){ 10068 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10069 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10070 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10071 } 10072 } 10073 } 10074 10075 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10076 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10077 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10078 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10079 return (sdu_len_offset + 2 + sdu_len) == size; 10080 } 10081 10082 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10083 if (iso_stream == NULL){ 10084 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10085 return; 10086 } 10087 10088 if (hci_stack->iso_packet_handler == NULL) { 10089 return; 10090 } 10091 10092 // parse header 10093 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10094 uint16_t data_total_length = little_endian_read_16(packet, 2); 10095 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10096 10097 // assert packet is complete 10098 if ((data_total_length + 4u) != size){ 10099 return; 10100 } 10101 10102 if ((pb_flag & 0x01) == 0){ 10103 if (pb_flag == 0x02){ 10104 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10105 if (hci_iso_sdu_complete(packet, size)) { 10106 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10107 } 10108 } else { 10109 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10110 if (size > sizeof(iso_stream->reassembly_buffer)){ 10111 return; 10112 } 10113 memcpy(iso_stream->reassembly_buffer, packet, size); 10114 // fix pb_flag 10115 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10116 iso_stream->reassembly_pos = size; 10117 } 10118 } else { 10119 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10120 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10121 if (ts_flag != 0){ 10122 return; 10123 } 10124 // append fragment 10125 if (iso_stream->reassembly_pos == 0){ 10126 return; 10127 } 10128 10129 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10130 // reset reassembly buffer 10131 iso_stream->reassembly_pos = 0; 10132 return; 10133 } 10134 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10135 iso_stream->reassembly_pos += data_total_length; 10136 10137 // deliver if last fragment and SDU complete 10138 if (pb_flag == 0x03){ 10139 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10140 // fix data_total_length 10141 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10142 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10143 } 10144 // reset reassembly buffer 10145 iso_stream->reassembly_pos = 0; 10146 } 10147 } 10148 } 10149 10150 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10151 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10152 uint16_t pos = 0; 10153 event[pos++] = HCI_EVENT_META_GAP; 10154 event[pos++] = 4 + (2 * big->num_bis); 10155 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10156 event[pos++] = status; 10157 event[pos++] = big->big_handle; 10158 event[pos++] = big->num_bis; 10159 uint8_t i; 10160 for (i=0;i<big->num_bis;i++){ 10161 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10162 pos += 2; 10163 } 10164 hci_emit_event(event, pos, 0); 10165 } 10166 10167 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10168 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10169 uint16_t pos = 0; 10170 event[pos++] = HCI_EVENT_META_GAP; 10171 event[pos++] = 4 + (2 * cig->num_cis); 10172 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10173 event[pos++] = status; 10174 event[pos++] = cig->cig_id; 10175 event[pos++] = cig->num_cis; 10176 uint8_t i; 10177 for (i=0;i<cig->num_cis;i++){ 10178 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10179 pos += 2; 10180 } 10181 hci_emit_event(event, pos, 0); 10182 } 10183 10184 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10185 uint16_t pos = 0; 10186 event[pos++] = HCI_EVENT_META_GAP; 10187 event[pos++] = 8; 10188 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10189 event[pos++] = status; 10190 event[pos++] = iso_stream->group_id; 10191 event[pos++] = iso_stream->stream_id; 10192 little_endian_store_16(event, pos, iso_stream->cis_handle); 10193 pos += 2; 10194 little_endian_store_16(event, pos, iso_stream->acl_handle); 10195 pos += 2; 10196 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10197 pos += 2; 10198 event[pos++] = iso_stream->number_of_subevents; 10199 event[pos++] = iso_stream->burst_number_c_to_p; 10200 event[pos++] = iso_stream->burst_number_p_to_c; 10201 event[pos++] = iso_stream->flush_timeout_c_to_p; 10202 event[pos++] = iso_stream->flush_timeout_p_to_c; 10203 return pos; 10204 } 10205 10206 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10207 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10208 // cache data before finalizing struct 10209 uint8_t event [17]; 10210 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10211 btstack_assert(pos <= sizeof(event)); 10212 if (status != ERROR_CODE_SUCCESS){ 10213 hci_iso_stream_finalize(iso_stream); 10214 } 10215 hci_emit_event(event, pos, 0); 10216 } 10217 10218 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10219 uint8_t event [4]; 10220 uint16_t pos = 0; 10221 event[pos++] = HCI_EVENT_META_GAP; 10222 event[pos++] = 2; 10223 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10224 event[pos++] = big->big_handle; 10225 hci_emit_event(event, pos, 0); 10226 } 10227 10228 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10229 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10230 uint16_t pos = 0; 10231 event[pos++] = HCI_EVENT_META_GAP; 10232 event[pos++] = 4; 10233 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10234 event[pos++] = status; 10235 event[pos++] = big_sync->big_handle; 10236 event[pos++] = big_sync->num_bis; 10237 uint8_t i; 10238 for (i=0;i<big_sync->num_bis;i++){ 10239 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10240 pos += 2; 10241 } 10242 hci_emit_event(event, pos, 0); 10243 } 10244 10245 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10246 uint8_t event [4]; 10247 uint16_t pos = 0; 10248 event[pos++] = HCI_EVENT_META_GAP; 10249 event[pos++] = 2; 10250 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10251 event[pos++] = big_handle; 10252 hci_emit_event(event, pos, 0); 10253 } 10254 10255 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10256 uint8_t event[6]; 10257 uint16_t pos = 0; 10258 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10259 event[pos++] = sizeof(event) - 2; 10260 event[pos++] = big->big_handle; 10261 event[pos++] = bis_index; 10262 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10263 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10264 } 10265 10266 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10267 uint8_t event[4]; 10268 uint16_t pos = 0; 10269 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10270 event[pos++] = sizeof(event) - 2; 10271 little_endian_store_16(event, pos, cis_con_handle); 10272 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10273 } 10274 10275 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10276 btstack_linked_list_iterator_t it; 10277 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10278 while (btstack_linked_list_iterator_has_next(&it)){ 10279 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10280 if ( big->big_handle == big_handle ) { 10281 return big; 10282 } 10283 } 10284 return NULL; 10285 } 10286 10287 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10288 btstack_linked_list_iterator_t it; 10289 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10290 while (btstack_linked_list_iterator_has_next(&it)){ 10291 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10292 if ( big_sync->big_handle == big_handle ) { 10293 return big_sync; 10294 } 10295 } 10296 return NULL; 10297 } 10298 10299 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10300 hci_stack->iso_packets_to_queue = num_packets; 10301 } 10302 10303 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10304 btstack_linked_list_iterator_t it; 10305 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10306 while (btstack_linked_list_iterator_has_next(&it)){ 10307 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10308 if ( cig->cig_id == cig_id ) { 10309 return cig; 10310 } 10311 } 10312 return NULL; 10313 } 10314 10315 static void hci_iso_notify_can_send_now(void){ 10316 10317 // BIG 10318 10319 btstack_linked_list_iterator_t it; 10320 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10321 while (btstack_linked_list_iterator_has_next(&it)){ 10322 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10323 // track number completed packet timestamps 10324 if (big->num_completed_timestamp_current_valid){ 10325 big->num_completed_timestamp_current_valid = false; 10326 if (big->num_completed_timestamp_previous_valid){ 10327 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10328 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10329 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10330 big->num_completed_timestamp_previous_ms); 10331 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10332 // to catch up, skip packet on all BIS 10333 uint8_t i; 10334 for (i=0;i<big->num_bis;i++){ 10335 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10336 if (iso_stream){ 10337 iso_stream->num_packets_to_skip++; 10338 } 10339 } 10340 } 10341 } 10342 big->num_completed_timestamp_previous_valid = true; 10343 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10344 } 10345 10346 if (big->can_send_now_requested){ 10347 // check if no outgoing iso packets pending and no can send now have to be emitted 10348 uint8_t i; 10349 bool can_send = true; 10350 uint8_t num_iso_queued_minimum = 0; 10351 for (i=0;i<big->num_bis;i++){ 10352 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10353 if (iso_stream == NULL) continue; 10354 // handle case where individual ISO packet was sent too late: 10355 // for each additionally queued packet, a new one needs to get skipped 10356 if (i==0){ 10357 num_iso_queued_minimum = iso_stream->num_packets_sent; 10358 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10359 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10360 iso_stream->num_packets_to_skip += num_packets_to_skip; 10361 iso_stream->num_packets_sent -= num_packets_to_skip; 10362 } 10363 // check if we can send now 10364 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10365 can_send = false; 10366 break; 10367 } 10368 } 10369 if (can_send){ 10370 // propagate can send now to individual streams 10371 big->can_send_now_requested = false; 10372 for (i=0;i<big->num_bis;i++){ 10373 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10374 iso_stream->emit_ready_to_send = true; 10375 } 10376 } 10377 } 10378 } 10379 10380 if (hci_stack->hci_packet_buffer_reserved) return; 10381 10382 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10383 while (btstack_linked_list_iterator_has_next(&it)){ 10384 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10385 // report bis ready 10386 uint8_t i; 10387 for (i=0;i<big->num_bis;i++){ 10388 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10389 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10390 iso_stream->emit_ready_to_send = false; 10391 hci_emit_bis_can_send_now(big, i); 10392 break; 10393 } 10394 } 10395 } 10396 10397 // CIS 10398 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10399 while (btstack_linked_list_iterator_has_next(&it)) { 10400 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10401 if ((iso_stream->can_send_now_requested) && 10402 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10403 iso_stream->can_send_now_requested = false; 10404 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10405 } 10406 } 10407 } 10408 10409 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10410 // make big handle unique and usuable for big and big sync 10411 if (hci_big_for_handle(big_handle) != NULL){ 10412 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10413 } 10414 if (hci_big_sync_for_handle(big_handle) != NULL){ 10415 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10416 } 10417 if (num_bis == 0){ 10418 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10419 } 10420 if (num_bis > MAX_NR_BIS){ 10421 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10422 } 10423 10424 // reserve ISO Streams 10425 uint8_t i; 10426 uint8_t status = ERROR_CODE_SUCCESS; 10427 for (i=0;i<num_bis;i++){ 10428 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10429 if (iso_stream == NULL) { 10430 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10431 break; 10432 } 10433 } 10434 10435 // free structs on error 10436 if (status != ERROR_CODE_SUCCESS){ 10437 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10438 } 10439 10440 return status; 10441 } 10442 10443 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10444 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10445 if (status != ERROR_CODE_SUCCESS){ 10446 return status; 10447 } 10448 10449 le_audio_big_t * big = storage; 10450 big->big_handle = big_params->big_handle; 10451 big->params = big_params; 10452 big->state = LE_AUDIO_BIG_STATE_CREATE; 10453 big->num_bis = big_params->num_bis; 10454 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10455 10456 hci_run(); 10457 10458 return ERROR_CODE_SUCCESS; 10459 } 10460 10461 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10462 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10463 if (status != ERROR_CODE_SUCCESS){ 10464 return status; 10465 } 10466 10467 le_audio_big_sync_t * big_sync = storage; 10468 big_sync->big_handle = big_sync_params->big_handle; 10469 big_sync->params = big_sync_params; 10470 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10471 big_sync->num_bis = big_sync_params->num_bis; 10472 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10473 10474 hci_run(); 10475 10476 return ERROR_CODE_SUCCESS; 10477 } 10478 10479 uint8_t gap_big_terminate(uint8_t big_handle){ 10480 le_audio_big_t * big = hci_big_for_handle(big_handle); 10481 if (big == NULL){ 10482 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10483 } 10484 switch (big->state){ 10485 case LE_AUDIO_BIG_STATE_CREATE: 10486 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10487 hci_emit_big_terminated(big); 10488 break; 10489 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10490 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10491 break; 10492 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10493 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10494 case LE_AUDIO_BIG_STATE_ACTIVE: 10495 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10496 hci_run(); 10497 break; 10498 default: 10499 return ERROR_CODE_COMMAND_DISALLOWED; 10500 } 10501 return ERROR_CODE_SUCCESS; 10502 } 10503 10504 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10505 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10506 if (big_sync == NULL){ 10507 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10508 } 10509 switch (big_sync->state){ 10510 case LE_AUDIO_BIG_STATE_CREATE: 10511 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10512 hci_emit_big_sync_stopped(big_handle); 10513 break; 10514 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10515 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10516 break; 10517 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10518 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10519 case LE_AUDIO_BIG_STATE_ACTIVE: 10520 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10521 hci_run(); 10522 break; 10523 default: 10524 return ERROR_CODE_COMMAND_DISALLOWED; 10525 } 10526 return ERROR_CODE_SUCCESS; 10527 } 10528 10529 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10530 le_audio_big_t * big = hci_big_for_handle(big_handle); 10531 if (big == NULL){ 10532 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10533 } 10534 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10535 return ERROR_CODE_COMMAND_DISALLOWED; 10536 } 10537 big->can_send_now_requested = true; 10538 hci_iso_notify_can_send_now(); 10539 return ERROR_CODE_SUCCESS; 10540 } 10541 10542 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10543 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10544 if (iso_stream == NULL){ 10545 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10546 } 10547 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10548 return ERROR_CODE_COMMAND_DISALLOWED; 10549 } 10550 iso_stream->can_send_now_requested = true; 10551 hci_iso_notify_can_send_now(); 10552 return ERROR_CODE_SUCCESS; 10553 } 10554 10555 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10556 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10557 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10558 } 10559 if (cig_params->num_cis == 0){ 10560 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10561 } 10562 if (cig_params->num_cis > MAX_NR_CIS){ 10563 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10564 } 10565 10566 // reserve ISO Streams 10567 uint8_t i; 10568 uint8_t status = ERROR_CODE_SUCCESS; 10569 for (i=0;i<cig_params->num_cis;i++){ 10570 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10571 if (iso_stream == NULL) { 10572 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10573 break; 10574 } 10575 } 10576 10577 // free structs on error 10578 if (status != ERROR_CODE_SUCCESS){ 10579 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10580 return status; 10581 } 10582 10583 le_audio_cig_t * cig = storage; 10584 cig->cig_id = cig_params->cig_id; 10585 cig->num_cis = cig_params->num_cis; 10586 cig->params = cig_params; 10587 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10588 for (i=0;i<cig->num_cis;i++){ 10589 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10590 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10591 cig->cis_setup_active[i] = false; 10592 cig->cis_established[i] = false; 10593 } 10594 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10595 10596 hci_run(); 10597 10598 return ERROR_CODE_SUCCESS; 10599 } 10600 10601 uint8_t gap_cig_remove(uint8_t cig_id){ 10602 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10603 if (cig == NULL){ 10604 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10605 } 10606 10607 // close active CIS 10608 uint8_t i; 10609 for (i=0;i<cig->num_cis;i++){ 10610 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10611 if (stream != NULL){ 10612 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10613 } 10614 } 10615 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10616 10617 hci_run(); 10618 10619 return ERROR_CODE_SUCCESS; 10620 } 10621 10622 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10623 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10624 if (cig == NULL){ 10625 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10626 } 10627 10628 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10629 return ERROR_CODE_COMMAND_DISALLOWED; 10630 } 10631 10632 // store ACL Connection Handles 10633 uint8_t i; 10634 for (i=0;i<cig->num_cis;i++){ 10635 // check that all con handles exist and store 10636 hci_con_handle_t cis_handle = cis_con_handles[i]; 10637 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10638 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10639 } 10640 uint8_t j; 10641 bool found = false; 10642 for (j=0;j<cig->num_cis;j++){ 10643 if (cig->cis_con_handles[j] == cis_handle){ 10644 cig->acl_con_handles[j] = acl_con_handles[j]; 10645 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10646 btstack_assert(iso_stream != NULL); 10647 iso_stream->acl_handle = acl_con_handles[j]; 10648 found = true; 10649 break; 10650 } 10651 } 10652 if (!found){ 10653 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10654 } 10655 } 10656 10657 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10658 hci_run(); 10659 10660 return ERROR_CODE_SUCCESS; 10661 } 10662 10663 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10664 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10665 if (iso_stream == NULL){ 10666 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10667 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10668 } 10669 10670 // set next state and continue 10671 iso_stream->state = state; 10672 hci_run(); 10673 return ERROR_CODE_SUCCESS; 10674 } 10675 10676 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10677 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10678 } 10679 10680 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10681 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10682 } 10683 10684 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10685 10686 // GAP Privacy - notify clients before random address update 10687 10688 static bool gap_privacy_client_all_ready(void){ 10689 // check if all ready 10690 btstack_linked_list_iterator_t it; 10691 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10692 while (btstack_linked_list_iterator_has_next(&it)) { 10693 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10694 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10695 return false; 10696 } 10697 } 10698 return true; 10699 } 10700 10701 static void gap_privacy_clients_handle_ready(void){ 10702 // clear 'ready' 10703 btstack_linked_list_iterator_t it; 10704 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10705 while (btstack_linked_list_iterator_has_next(&it)) { 10706 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10707 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10708 } 10709 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10710 hci_run(); 10711 } 10712 10713 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10714 btstack_linked_list_iterator_t it; 10715 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10716 while (btstack_linked_list_iterator_has_next(&it)) { 10717 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10718 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10719 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10720 (*client->callback)(client, new_random_address); 10721 } 10722 } 10723 if (gap_privacy_client_all_ready()){ 10724 gap_privacy_clients_handle_ready(); 10725 } 10726 } 10727 10728 void gap_privacy_client_register(gap_privacy_client_t * client){ 10729 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10730 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10731 } 10732 10733 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10734 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10735 if (gap_privacy_client_all_ready()){ 10736 gap_privacy_clients_handle_ready(); 10737 } 10738 } 10739 10740 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10741 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10742 } 10743 10744 #endif /* ENABLE_BLE */ 10745 10746 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10747 void hci_setup_test_connections_fuzz(void){ 10748 hci_connection_t * conn; 10749 10750 // default address: 66:55:44:33:00:01 10751 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10752 10753 // setup Controller info 10754 hci_stack->num_cmd_packets = 255; 10755 hci_stack->acl_packets_total_num = 255; 10756 10757 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10758 addr[5] = 0x01; 10759 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10760 conn->con_handle = addr[5]; 10761 conn->state = RECEIVED_CONNECTION_REQUEST; 10762 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10763 10764 // setup incoming Classic SCO connection with con handle 0x0002 10765 addr[5] = 0x02; 10766 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10767 conn->con_handle = addr[5]; 10768 conn->state = RECEIVED_CONNECTION_REQUEST; 10769 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10770 10771 // setup ready Classic ACL connection with con handle 0x0003 10772 addr[5] = 0x03; 10773 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10774 conn->con_handle = addr[5]; 10775 conn->state = OPEN; 10776 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10777 10778 // setup ready Classic SCO connection with con handle 0x0004 10779 addr[5] = 0x04; 10780 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10781 conn->con_handle = addr[5]; 10782 conn->state = OPEN; 10783 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10784 10785 // setup ready LE ACL connection with con handle 0x005 and public address 10786 addr[5] = 0x05; 10787 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10788 conn->con_handle = addr[5]; 10789 conn->state = OPEN; 10790 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10791 conn->sm_connection.sm_connection_encrypted = 1; 10792 } 10793 10794 void hci_free_connections_fuzz(void){ 10795 btstack_linked_list_iterator_t it; 10796 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10797 while (btstack_linked_list_iterator_has_next(&it)){ 10798 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10799 btstack_linked_list_iterator_remove(&it); 10800 btstack_memory_hci_connection_free(con); 10801 } 10802 } 10803 void hci_simulate_working_fuzz(void){ 10804 hci_stack->le_scanning_param_update = false; 10805 hci_init_done(); 10806 hci_stack->num_cmd_packets = 255; 10807 } 10808 #endif 10809