1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static bool hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 #ifdef ENABLE_LE_CENTRAL 227 // called from test/ble_client/advertising_data_parser.c 228 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 229 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 230 static hci_connection_t * gap_get_outgoing_connection(void); 231 static void hci_le_scan_stop(void); 232 static bool hci_run_general_gap_le(void); 233 #endif 234 #ifdef ENABLE_LE_PERIPHERAL 235 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 236 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 237 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 238 #endif /* ENABLE_LE_PERIPHERAL */ 239 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 240 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 241 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 242 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 243 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 244 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 245 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 246 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 247 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 248 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 249 static void hci_iso_notify_can_send_now(void); 250 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 251 static void hci_emit_big_terminated(const le_audio_big_t * big); 252 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 253 static void hci_emit_big_sync_stopped(uint8_t big_handle); 254 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 255 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 258 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 259 #endif /* ENABLE_BLE */ 260 261 // the STACK is here 262 #ifndef HAVE_MALLOC 263 static hci_stack_t hci_stack_static; 264 #endif 265 static hci_stack_t * hci_stack = NULL; 266 267 #ifdef ENABLE_CLASSIC 268 // default name 269 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 270 271 // test helper 272 static uint8_t disable_l2cap_timeouts = 0; 273 #endif 274 275 // reset connection state on create and on reconnect 276 // don't overwrite addr, con handle, role 277 static void hci_connection_init(hci_connection_t * conn){ 278 conn->authentication_flags = AUTH_FLAG_NONE; 279 conn->bonding_flags = 0; 280 conn->requested_security_level = LEVEL_0; 281 #ifdef ENABLE_CLASSIC 282 conn->request_role = HCI_ROLE_INVALID; 283 conn->sniff_subrating_max_latency = 0xffff; 284 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 285 conn->link_key_type = INVALID_LINK_KEY; 286 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 287 btstack_run_loop_set_timer_context(&conn->timeout, conn); 288 hci_connection_timestamp(conn); 289 #endif 290 conn->acl_recombination_length = 0; 291 conn->acl_recombination_pos = 0; 292 conn->num_packets_sent = 0; 293 294 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 295 #ifdef ENABLE_BLE 296 conn->le_phy_update_all_phys = 0xff; 297 #endif 298 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 299 conn->le_max_tx_octets = 27; 300 #endif 301 #ifdef ENABLE_CLASSIC_PAIRING_OOB 302 conn->classic_oob_c_192 = NULL; 303 conn->classic_oob_r_192 = NULL; 304 conn->classic_oob_c_256 = NULL; 305 conn->classic_oob_r_256 = NULL; 306 #endif 307 } 308 309 /** 310 * create connection for given address 311 * 312 * @return connection OR NULL, if no memory left 313 */ 314 static hci_connection_t * 315 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 316 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 317 318 hci_connection_t * conn = btstack_memory_hci_connection_get(); 319 if (!conn) return NULL; 320 hci_connection_init(conn); 321 322 bd_addr_copy(conn->address, addr); 323 conn->address_type = addr_type; 324 conn->con_handle = HCI_CON_HANDLE_INVALID; 325 conn->role = role; 326 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 327 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 328 conn->le_past_advertising_handle = 0xff; 329 #endif 330 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 331 332 return conn; 333 } 334 335 336 /** 337 * get le connection parameter range 338 * 339 * @return le connection parameter range struct 340 */ 341 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 342 *range = hci_stack->le_connection_parameter_range; 343 } 344 345 /** 346 * set le connection parameter range 347 * 348 */ 349 350 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 351 hci_stack->le_connection_parameter_range = *range; 352 } 353 354 /** 355 * @brief Test if connection parameters are inside in existing rage 356 * @param conn_interval_min (unit: 1.25ms) 357 * @param conn_interval_max (unit: 1.25ms) 358 * @param conn_latency 359 * @param supervision_timeout (unit: 10ms) 360 * @return 1 if included 361 */ 362 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 363 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 364 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 365 366 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 367 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 368 369 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 370 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 371 372 return 1; 373 } 374 375 /** 376 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 377 * @note: default: 1 378 * @param max_peripheral_connections 379 */ 380 #ifdef ENABLE_LE_PERIPHERAL 381 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 382 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 383 } 384 #endif 385 386 /** 387 * get hci connections iterator 388 * 389 * @return hci connections iterator 390 */ 391 392 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 393 btstack_linked_list_iterator_init(it, &hci_stack->connections); 394 } 395 396 /** 397 * get connection for a given handle 398 * 399 * @return connection OR NULL, if not found 400 */ 401 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 402 btstack_linked_list_iterator_t it; 403 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 404 while (btstack_linked_list_iterator_has_next(&it)){ 405 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 406 if ( item->con_handle == con_handle ) { 407 return item; 408 } 409 } 410 return NULL; 411 } 412 413 /** 414 * get connection for given address 415 * 416 * @return connection OR NULL, if not found 417 */ 418 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 419 btstack_linked_list_iterator_t it; 420 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 421 while (btstack_linked_list_iterator_has_next(&it)){ 422 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 423 if (connection->address_type != addr_type) continue; 424 if (memcmp(addr, connection->address, 6) != 0) continue; 425 return connection; 426 } 427 return NULL; 428 } 429 430 #ifdef ENABLE_CLASSIC 431 432 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 433 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 434 } 435 436 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 437 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 438 } 439 440 #ifdef ENABLE_SCO_OVER_HCI 441 static int hci_number_sco_connections(void){ 442 int connections = 0; 443 btstack_linked_list_iterator_t it; 444 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 445 while (btstack_linked_list_iterator_has_next(&it)){ 446 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 447 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 448 connections++; 449 } 450 return connections; 451 } 452 #endif 453 454 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 455 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 456 #ifdef HAVE_EMBEDDED_TICK 457 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 458 // connections might be timed out 459 hci_emit_l2cap_check_timeout(connection); 460 } 461 #else 462 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 463 // connections might be timed out 464 hci_emit_l2cap_check_timeout(connection); 465 } 466 #endif 467 } 468 469 static void hci_connection_timestamp(hci_connection_t *connection){ 470 #ifdef HAVE_EMBEDDED_TICK 471 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 472 #else 473 connection->timestamp = btstack_run_loop_get_time_ms(); 474 #endif 475 } 476 477 /** 478 * add authentication flags and reset timer 479 * @note: assumes classic connection 480 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 481 */ 482 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 483 bd_addr_t addr; 484 reverse_bd_addr(bd_addr, addr); 485 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 486 if (conn) { 487 connectionSetAuthenticationFlags(conn, flags); 488 hci_connection_timestamp(conn); 489 } 490 } 491 492 static bool hci_pairing_active(hci_connection_t * hci_connection){ 493 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 494 } 495 496 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 497 if (hci_pairing_active(hci_connection)) return; 498 if (ssp){ 499 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 500 } else { 501 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 502 } 503 // if we are initiator, we have sent an HCI Authenticate Request 504 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 505 506 // if we are responder, use minimal service security level as required level 507 if (!initiator){ 508 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 509 } 510 511 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 512 513 uint8_t event[12]; 514 event[0] = GAP_EVENT_PAIRING_STARTED; 515 event[1] = 10; 516 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 517 reverse_bd_addr(hci_connection->address, &event[4]); 518 event[10] = (uint8_t) ssp; 519 event[11] = (uint8_t) initiator; 520 hci_emit_event(event, sizeof(event), 1); 521 } 522 523 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 524 hci_connection->requested_security_level = LEVEL_0; 525 if (!hci_pairing_active(hci_connection)) return; 526 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 527 #ifdef ENABLE_CLASSIC_PAIRING_OOB 528 hci_connection->classic_oob_c_192 = NULL; 529 hci_connection->classic_oob_r_192 = NULL; 530 hci_connection->classic_oob_c_256 = NULL; 531 hci_connection->classic_oob_r_256 = NULL; 532 #endif 533 log_info("pairing complete, status %02x", status); 534 535 uint8_t event[11]; 536 event[0] = GAP_EVENT_PAIRING_COMPLETE; 537 event[1] = 9; 538 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 539 reverse_bd_addr(hci_connection->address, &event[4]); 540 event[10] = status; 541 hci_emit_event(event, sizeof(event), 1); 542 543 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 544 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 545 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 546 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 547 hci_connection->bonding_status = status; 548 } 549 } 550 551 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 552 hci_connection_t * conn = hci_connection_for_handle(handle); 553 if (!conn) return false; 554 return hci_pairing_active(conn); 555 } 556 557 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 558 if (!hci_stack->link_key_db) return; 559 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 560 hci_stack->link_key_db->delete_link_key(addr); 561 } 562 563 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 564 if (!hci_stack->link_key_db) return; 565 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 566 hci_stack->link_key_db->put_link_key(addr, link_key, type); 567 } 568 569 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 570 if (!hci_stack->link_key_db) return false; 571 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 572 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 573 return result; 574 } 575 576 void gap_delete_all_link_keys(void){ 577 bd_addr_t addr; 578 link_key_t link_key; 579 link_key_type_t type; 580 btstack_link_key_iterator_t it; 581 int ok = gap_link_key_iterator_init(&it); 582 if (!ok) { 583 log_error("could not initialize iterator"); 584 return; 585 } 586 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 587 gap_drop_link_key_for_bd_addr(addr); 588 } 589 gap_link_key_iterator_done(&it); 590 } 591 592 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 593 if (!hci_stack->link_key_db) return 0; 594 if (!hci_stack->link_key_db->iterator_init) return 0; 595 return hci_stack->link_key_db->iterator_init(it); 596 } 597 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 598 if (!hci_stack->link_key_db) return 0; 599 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 600 } 601 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 602 if (!hci_stack->link_key_db) return; 603 hci_stack->link_key_db->iterator_done(it); 604 } 605 #endif 606 607 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 608 switch (address_type){ 609 case BD_ADDR_TYPE_LE_PUBLIC: 610 case BD_ADDR_TYPE_LE_RANDOM: 611 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 612 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 613 return true; 614 default: 615 return false; 616 } 617 } 618 619 static bool hci_is_le_connection(hci_connection_t * connection){ 620 return hci_is_le_connection_type(connection->address_type); 621 } 622 623 /** 624 * count connections 625 */ 626 static int nr_hci_connections(void){ 627 int count = 0; 628 btstack_linked_item_t *it; 629 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 630 count++; 631 } 632 return count; 633 } 634 635 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 636 637 unsigned int num_packets_sent_classic = 0; 638 unsigned int num_packets_sent_le = 0; 639 640 btstack_linked_item_t *it; 641 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 642 hci_connection_t * connection = (hci_connection_t *) it; 643 if (hci_is_le_connection(connection)){ 644 num_packets_sent_le += connection->num_packets_sent; 645 } 646 if (connection->address_type == BD_ADDR_TYPE_ACL){ 647 num_packets_sent_classic += connection->num_packets_sent; 648 } 649 } 650 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 651 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 652 int free_slots_le = 0; 653 654 if (free_slots_classic < 0){ 655 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 656 return 0; 657 } 658 659 if (hci_stack->le_acl_packets_total_num){ 660 // if we have LE slots, they are used 661 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 662 if (free_slots_le < 0){ 663 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 664 return 0; 665 } 666 } else { 667 // otherwise, classic slots are used for LE, too 668 free_slots_classic -= num_packets_sent_le; 669 if (free_slots_classic < 0){ 670 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 671 return 0; 672 } 673 } 674 675 switch (address_type){ 676 case BD_ADDR_TYPE_UNKNOWN: 677 log_error("hci_number_free_acl_slots: unknown address type"); 678 return 0; 679 680 case BD_ADDR_TYPE_ACL: 681 return (uint16_t) free_slots_classic; 682 683 default: 684 if (hci_stack->le_acl_packets_total_num > 0){ 685 return (uint16_t) free_slots_le; 686 } 687 return (uint16_t) free_slots_classic; 688 } 689 } 690 691 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 692 // get connection type 693 hci_connection_t * connection = hci_connection_for_handle(con_handle); 694 if (!connection){ 695 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 696 return 0; 697 } 698 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 699 } 700 701 #ifdef ENABLE_CLASSIC 702 static int hci_number_free_sco_slots(void){ 703 unsigned int num_sco_packets_sent = 0; 704 btstack_linked_item_t *it; 705 if (hci_stack->synchronous_flow_control_enabled){ 706 // explicit flow control 707 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 708 hci_connection_t * connection = (hci_connection_t *) it; 709 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 710 num_sco_packets_sent += connection->num_packets_sent; 711 } 712 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 713 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 714 return 0; 715 } 716 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 717 } else { 718 // implicit flow control -- TODO 719 int num_ready = 0; 720 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 721 hci_connection_t * connection = (hci_connection_t *) it; 722 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 723 if (connection->sco_tx_ready == 0) continue; 724 num_ready++; 725 } 726 return num_ready; 727 } 728 } 729 #endif 730 731 // only used to send HCI Host Number Completed Packets 732 static int hci_can_send_comand_packet_transport(void){ 733 if (hci_stack->hci_packet_buffer_reserved) return 0; 734 735 // check for async hci transport implementations 736 if (hci_stack->hci_transport->can_send_packet_now){ 737 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 738 return 0; 739 } 740 } 741 return 1; 742 } 743 744 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 745 bool hci_can_send_command_packet_now(void){ 746 if (hci_can_send_comand_packet_transport() == 0) return false; 747 return hci_stack->num_cmd_packets > 0u; 748 } 749 750 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 751 // check for async hci transport implementations 752 if (!hci_stack->hci_transport->can_send_packet_now) return true; 753 return hci_stack->hci_transport->can_send_packet_now(packet_type); 754 } 755 756 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 757 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 758 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 759 } 760 761 bool hci_can_send_acl_le_packet_now(void){ 762 if (hci_stack->hci_packet_buffer_reserved) return false; 763 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 764 } 765 766 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 767 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 768 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 769 } 770 771 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 772 if (hci_stack->hci_packet_buffer_reserved) return false; 773 return hci_can_send_prepared_acl_packet_now(con_handle); 774 } 775 776 #ifdef ENABLE_CLASSIC 777 bool hci_can_send_acl_classic_packet_now(void){ 778 if (hci_stack->hci_packet_buffer_reserved) return false; 779 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 780 } 781 782 bool hci_can_send_prepared_sco_packet_now(void){ 783 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 784 if (hci_have_usb_transport()){ 785 return hci_stack->sco_can_send_now; 786 } else { 787 return hci_number_free_sco_slots() > 0; 788 } 789 } 790 791 bool hci_can_send_sco_packet_now(void){ 792 if (hci_stack->hci_packet_buffer_reserved) return false; 793 return hci_can_send_prepared_sco_packet_now(); 794 } 795 796 void hci_request_sco_can_send_now_event(void){ 797 hci_stack->sco_waiting_for_can_send_now = 1; 798 hci_notify_if_sco_can_send_now(); 799 } 800 #endif 801 802 // used for internal checks in l2cap.c 803 bool hci_is_packet_buffer_reserved(void){ 804 return hci_stack->hci_packet_buffer_reserved; 805 } 806 807 // reserves outgoing packet buffer. 808 // @return 1 if successful 809 bool hci_reserve_packet_buffer(void){ 810 if (hci_stack->hci_packet_buffer_reserved) { 811 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 812 return false; 813 } 814 hci_stack->hci_packet_buffer_reserved = true; 815 return true; 816 } 817 818 void hci_release_packet_buffer(void){ 819 hci_stack->hci_packet_buffer_reserved = false; 820 } 821 822 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 823 static int hci_transport_synchronous(void){ 824 return hci_stack->hci_transport->can_send_packet_now == NULL; 825 } 826 827 // used for debugging 828 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 829 static void hci_controller_dump_packets(void){ 830 // format: "{handle:04x}:{count:02d} " 831 char summaries[3][7 * 8 + 1]; 832 uint16_t totals[3]; 833 uint8_t index; 834 for (index = 0 ; index < 3 ; index++){ 835 summaries[index][0] = 0; 836 totals[index] = 0; 837 } 838 btstack_linked_item_t *it; 839 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 840 hci_connection_t * connection = (hci_connection_t *) it; 841 switch (connection->address_type){ 842 case BD_ADDR_TYPE_ACL: 843 index = 0; 844 break; 845 case BD_ADDR_TYPE_SCO: 846 index = 2; 847 break; 848 default: 849 index = 1; 850 break; 851 } 852 totals[index] += connection->num_packets_sent; 853 char item_text[10]; 854 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 855 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 856 } 857 for (index = 0 ; index < 3 ; index++){ 858 if (summaries[index][0] == 0){ 859 summaries[index][0] = '-'; 860 summaries[index][1] = 0; 861 } 862 } 863 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 864 } 865 #endif 866 867 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 868 869 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 870 871 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 872 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 873 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 874 max_acl_data_packet_length = hci_stack->le_data_packets_length; 875 } 876 877 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 878 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 879 max_acl_data_packet_length = connection->le_max_tx_octets; 880 } 881 #endif 882 883 log_debug("hci_send_acl_packet_fragments entered"); 884 885 uint8_t status = ERROR_CODE_SUCCESS; 886 // multiple packets could be send on a synchronous HCI transport 887 while (true){ 888 889 log_debug("hci_send_acl_packet_fragments loop entered"); 890 891 // get current data 892 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 893 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 894 bool more_fragments = false; 895 896 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 897 if (current_acl_data_packet_length > max_acl_data_packet_length){ 898 more_fragments = true; 899 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 900 } 901 902 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 903 if (acl_header_pos > 0u){ 904 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 905 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 906 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 907 } 908 909 // update header len 910 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 911 912 // count packet 913 connection->num_packets_sent++; 914 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 915 916 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 917 if (more_fragments){ 918 // update start of next fragment to send 919 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 920 } else { 921 // done 922 hci_stack->acl_fragmentation_pos = 0; 923 hci_stack->acl_fragmentation_total_size = 0; 924 } 925 926 // send packet 927 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 928 const int size = current_acl_data_packet_length + 4; 929 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 930 hci_stack->acl_fragmentation_tx_active = 1; 931 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 932 if (err != 0){ 933 // no error from HCI Transport expected 934 status = ERROR_CODE_HARDWARE_FAILURE; 935 } 936 937 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 938 hci_controller_dump_packets(); 939 #endif 940 941 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 942 943 // done yet? 944 if (!more_fragments) break; 945 946 // can send more? 947 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 948 } 949 950 log_debug("hci_send_acl_packet_fragments loop over"); 951 952 // release buffer now for synchronous transport 953 if (hci_transport_synchronous()){ 954 hci_stack->acl_fragmentation_tx_active = 0; 955 hci_release_packet_buffer(); 956 hci_emit_transport_packet_sent(); 957 } 958 959 return status; 960 } 961 962 // pre: caller has reserved the packet buffer 963 uint8_t hci_send_acl_packet_buffer(int size){ 964 btstack_assert(hci_stack->hci_packet_buffer_reserved); 965 966 uint8_t * packet = hci_stack->hci_packet_buffer; 967 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 968 969 hci_connection_t *connection = hci_connection_for_handle( con_handle); 970 if (!connection) { 971 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 972 hci_release_packet_buffer(); 973 hci_emit_transport_packet_sent(); 974 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 975 } 976 977 // check for free places on Bluetooth module 978 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 979 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 980 hci_release_packet_buffer(); 981 hci_emit_transport_packet_sent(); 982 return BTSTACK_ACL_BUFFERS_FULL; 983 } 984 985 #ifdef ENABLE_CLASSIC 986 hci_connection_timestamp(connection); 987 #endif 988 989 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 990 991 // setup data 992 hci_stack->acl_fragmentation_total_size = size; 993 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 994 995 return hci_send_acl_packet_fragments(connection); 996 } 997 998 #ifdef ENABLE_CLASSIC 999 // pre: caller has reserved the packet buffer 1000 uint8_t hci_send_sco_packet_buffer(int size){ 1001 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1002 1003 uint8_t * packet = hci_stack->hci_packet_buffer; 1004 1005 // skip checks in loopback mode 1006 if (!hci_stack->loopback_mode){ 1007 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1008 1009 // check for free places on Bluetooth module 1010 if (!hci_can_send_prepared_sco_packet_now()) { 1011 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1012 hci_release_packet_buffer(); 1013 hci_emit_transport_packet_sent(); 1014 return BTSTACK_ACL_BUFFERS_FULL; 1015 } 1016 1017 // track send packet in connection struct 1018 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1019 if (!connection) { 1020 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1021 hci_release_packet_buffer(); 1022 hci_emit_transport_packet_sent(); 1023 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1024 } 1025 1026 if (hci_have_usb_transport()){ 1027 // token used 1028 hci_stack->sco_can_send_now = false; 1029 } else { 1030 if (hci_stack->synchronous_flow_control_enabled){ 1031 connection->num_packets_sent++; 1032 } else { 1033 connection->sco_tx_ready--; 1034 } 1035 } 1036 } 1037 1038 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1039 1040 #ifdef HAVE_SCO_TRANSPORT 1041 hci_stack->sco_transport->send_packet(packet, size); 1042 hci_release_packet_buffer(); 1043 hci_emit_transport_packet_sent(); 1044 1045 return 0; 1046 #else 1047 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1048 if (hci_transport_synchronous()){ 1049 hci_release_packet_buffer(); 1050 hci_emit_transport_packet_sent(); 1051 } 1052 1053 if (err != 0){ 1054 return ERROR_CODE_HARDWARE_FAILURE; 1055 } 1056 return ERROR_CODE_SUCCESS; 1057 #endif 1058 } 1059 #endif 1060 1061 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1062 static uint8_t hci_send_iso_packet_fragments(void){ 1063 1064 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1065 uint8_t status = ERROR_CODE_SUCCESS; 1066 // multiple packets could be send on a synchronous HCI transport 1067 while (true){ 1068 1069 // get current data 1070 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1071 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1072 bool more_fragments = false; 1073 1074 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1075 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1076 more_fragments = true; 1077 current_iso_data_packet_length = max_iso_data_packet_length; 1078 } 1079 1080 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1081 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1082 uint8_t pb_flags; 1083 if (iso_header_pos == 0u){ 1084 // first fragment, keep TS field 1085 pb_flags = more_fragments ? 0x00 : 0x02; 1086 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1087 } else { 1088 // later fragment, drop TS field 1089 pb_flags = more_fragments ? 0x01 : 0x03; 1090 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1091 } 1092 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1093 1094 // update header len 1095 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1096 1097 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1098 if (more_fragments){ 1099 // update start of next fragment to send 1100 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1101 } else { 1102 // done 1103 hci_stack->iso_fragmentation_pos = 0; 1104 hci_stack->iso_fragmentation_total_size = 0; 1105 } 1106 1107 // send packet 1108 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1109 const int size = current_iso_data_packet_length + 4; 1110 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1111 hci_stack->iso_fragmentation_tx_active = true; 1112 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1113 if (err != 0){ 1114 // no error from HCI Transport expected 1115 status = ERROR_CODE_HARDWARE_FAILURE; 1116 } 1117 1118 // done yet? 1119 if (!more_fragments) break; 1120 1121 // can send more? 1122 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1123 } 1124 1125 // release buffer now for synchronous transport 1126 if (hci_transport_synchronous()){ 1127 hci_stack->iso_fragmentation_tx_active = false; 1128 hci_release_packet_buffer(); 1129 hci_emit_transport_packet_sent(); 1130 } 1131 1132 return status; 1133 } 1134 1135 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1136 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1137 1138 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1139 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1140 if (iso_stream == NULL){ 1141 hci_release_packet_buffer(); 1142 hci_iso_notify_can_send_now(); 1143 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1144 } 1145 1146 // TODO: check for space on controller 1147 1148 // skip iso packets if needed 1149 if (iso_stream->num_packets_to_skip > 0){ 1150 iso_stream->num_packets_to_skip--; 1151 // pretend it was processed and trigger next one 1152 hci_release_packet_buffer(); 1153 hci_iso_notify_can_send_now(); 1154 return ERROR_CODE_SUCCESS; 1155 } 1156 1157 // track outgoing packet sent 1158 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1159 iso_stream->num_packets_sent++; 1160 1161 // setup data 1162 hci_stack->iso_fragmentation_total_size = size; 1163 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1164 1165 return hci_send_iso_packet_fragments(); 1166 } 1167 #endif 1168 1169 static void acl_handler(uint8_t *packet, uint16_t size){ 1170 1171 // get info 1172 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1173 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1174 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1175 uint16_t acl_length = READ_ACL_LENGTH(packet); 1176 1177 // ignore non-registered handle 1178 if (!conn){ 1179 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1180 return; 1181 } 1182 1183 // assert packet is complete 1184 if ((acl_length + 4u) != size){ 1185 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1186 return; 1187 } 1188 1189 #ifdef ENABLE_CLASSIC 1190 // update idle timestamp 1191 hci_connection_timestamp(conn); 1192 #endif 1193 1194 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1195 hci_stack->host_completed_packets = 1; 1196 conn->num_packets_completed++; 1197 #endif 1198 1199 // handle different packet types 1200 switch (acl_flags & 0x03u) { 1201 1202 case 0x01: // continuation fragment 1203 1204 // sanity checks 1205 if (conn->acl_recombination_pos == 0u) { 1206 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1207 return; 1208 } 1209 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1210 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1211 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1212 conn->acl_recombination_pos = 0; 1213 return; 1214 } 1215 1216 // append fragment payload (header already stored) 1217 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1218 &packet[4], acl_length); 1219 conn->acl_recombination_pos += acl_length; 1220 1221 // forward complete L2CAP packet if complete. 1222 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1223 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1224 // reset recombination buffer 1225 conn->acl_recombination_length = 0; 1226 conn->acl_recombination_pos = 0; 1227 } 1228 break; 1229 1230 case 0x02: { // first fragment 1231 1232 // sanity check 1233 if (conn->acl_recombination_pos) { 1234 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1235 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1236 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1237 } 1238 conn->acl_recombination_pos = 0; 1239 } 1240 1241 // peek into L2CAP packet! 1242 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1243 1244 // compare fragment size to L2CAP packet size 1245 if (acl_length >= (l2cap_length + 4u)){ 1246 // forward fragment as L2CAP packet 1247 hci_emit_acl_packet(packet, acl_length + 4u); 1248 } else { 1249 1250 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1251 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1252 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1253 return; 1254 } 1255 1256 // store first fragment and tweak acl length for complete package 1257 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1258 packet, acl_length + 4u); 1259 conn->acl_recombination_pos = acl_length + 4u; 1260 conn->acl_recombination_length = l2cap_length; 1261 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1262 } 1263 break; 1264 1265 } 1266 default: 1267 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1268 return; 1269 } 1270 1271 // execute main loop 1272 hci_run(); 1273 } 1274 1275 static void hci_connection_stop_timer(hci_connection_t * conn){ 1276 btstack_run_loop_remove_timer(&conn->timeout); 1277 #ifdef ENABLE_CLASSIC 1278 btstack_run_loop_remove_timer(&conn->timeout_sco); 1279 #endif 1280 } 1281 1282 static void hci_shutdown_connection(hci_connection_t *conn){ 1283 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1284 1285 #ifdef ENABLE_CLASSIC 1286 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1287 bd_addr_type_t addr_type = conn->address_type; 1288 #endif 1289 #ifdef HAVE_SCO_TRANSPORT 1290 hci_con_handle_t con_handle = conn->con_handle; 1291 #endif 1292 #endif 1293 1294 hci_connection_stop_timer(conn); 1295 1296 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1297 btstack_memory_hci_connection_free( conn ); 1298 1299 // now it's gone 1300 hci_emit_nr_connections_changed(); 1301 1302 #ifdef ENABLE_CLASSIC 1303 #ifdef ENABLE_SCO_OVER_HCI 1304 // update SCO 1305 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1306 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1307 } 1308 #endif 1309 #ifdef HAVE_SCO_TRANSPORT 1310 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1311 hci_stack->sco_transport->close(con_handle); 1312 } 1313 #endif 1314 #endif 1315 } 1316 1317 #ifdef ENABLE_CLASSIC 1318 1319 static const uint16_t hci_acl_packet_type_sizes[] = { 1320 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1321 HCI_ACL_DH1_SIZE, 0, 0, 0, 1322 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1323 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1324 }; 1325 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1326 0, // 3 slot packets 1327 1, // 5 slot packets 1328 25, // EDR 2 mpbs 1329 26, // EDR 3 mbps 1330 39, // 3 slot EDR packts 1331 40, // 5 slot EDR packet 1332 }; 1333 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1334 0x0f00, // 3 slot packets 1335 0xf000, // 5 slot packets 1336 0x1102, // EDR 2 mpbs 1337 0x2204, // EDR 3 mbps 1338 0x0300, // 3 slot EDR packts 1339 0x3000, // 5 slot EDR packet 1340 }; 1341 1342 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1343 // enable packet types based on size 1344 uint16_t packet_types = 0; 1345 unsigned int i; 1346 for (i=0;i<16;i++){ 1347 if (hci_acl_packet_type_sizes[i] == 0) continue; 1348 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1349 packet_types |= 1 << i; 1350 } 1351 } 1352 // disable packet types due to missing local supported features 1353 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1354 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1355 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1356 if (feature_set) continue; 1357 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1358 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1359 } 1360 return packet_types; 1361 } 1362 1363 uint16_t hci_usable_acl_packet_types(void){ 1364 // flip bits for "may not be used" 1365 return hci_stack->usable_packet_types_acl ^ 0x3306; 1366 } 1367 1368 static const struct { 1369 uint8_t feature_index; 1370 uint16_t feature_packet_mask; 1371 } hci_sco_packet_type_feature_requirements[] = { 1372 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1373 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1374 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1375 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1376 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1377 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1378 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1379 }; 1380 1381 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1382 static const struct { 1383 uint16_t type; 1384 uint16_t payload_length; 1385 } hci_sco_packet_type_to_payload_length[] = { 1386 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1387 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1388 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1389 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1390 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1391 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1392 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1393 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1394 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1395 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1396 }; 1397 1398 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1399 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1400 unsigned int i; 1401 // disable packet types due to missing local supported features 1402 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1403 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1404 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1405 if (feature_set) continue; 1406 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1407 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1408 } 1409 return packet_types; 1410 } 1411 1412 uint16_t hci_usable_sco_packet_types(void){ 1413 return hci_stack->usable_packet_types_sco; 1414 } 1415 1416 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1417 uint8_t i; 1418 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1419 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1420 return hci_sco_packet_type_to_payload_length[i].payload_length; 1421 } 1422 } 1423 return 0; 1424 } 1425 1426 #endif 1427 1428 uint8_t* hci_get_outgoing_packet_buffer(void){ 1429 // hci packet buffer is >= acl data packet length 1430 return hci_stack->hci_packet_buffer; 1431 } 1432 1433 uint16_t hci_max_acl_data_packet_length(void){ 1434 return hci_stack->acl_data_packet_length; 1435 } 1436 1437 #ifdef ENABLE_CLASSIC 1438 bool hci_extended_sco_link_supported(void){ 1439 // No. 31, byte 3, bit 7 1440 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1441 } 1442 #endif 1443 1444 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1445 // No. 54, byte 6, bit 6 1446 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1447 } 1448 1449 #ifdef ENABLE_CLASSIC 1450 static int gap_ssp_supported(void){ 1451 // No. 51, byte 6, bit 3 1452 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1453 } 1454 #endif 1455 1456 static int hci_classic_supported(void){ 1457 #ifdef ENABLE_CLASSIC 1458 // No. 37, byte 4, bit 5, = No BR/EDR Support 1459 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1460 #else 1461 return 0; 1462 #endif 1463 } 1464 1465 static int hci_le_supported(void){ 1466 #ifdef ENABLE_BLE 1467 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1468 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1469 #else 1470 return 0; 1471 #endif 1472 } 1473 1474 static bool hci_command_supported(uint8_t command_index){ 1475 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1476 } 1477 1478 #ifdef ENABLE_BLE 1479 1480 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1481 static bool hci_extended_advertising_supported(void){ 1482 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1483 } 1484 #endif 1485 1486 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1487 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1488 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1489 } else { 1490 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1491 } 1492 } 1493 1494 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1495 *addr_type = hci_stack->le_own_addr_type; 1496 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1497 } 1498 1499 #ifdef ENABLE_LE_PERIPHERAL 1500 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1501 *addr_type = hci_stack->le_advertisements_own_addr_type; 1502 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1503 }; 1504 #endif 1505 1506 #ifdef ENABLE_LE_CENTRAL 1507 1508 /** 1509 * @brief Get own addr type and address used for LE connections (Central) 1510 */ 1511 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1512 *addr_type = hci_stack->le_connection_own_addr_type; 1513 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1514 } 1515 1516 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1517 1518 uint16_t offset = 3; 1519 uint8_t num_reports = packet[offset]; 1520 offset += 1; 1521 1522 uint16_t i; 1523 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1524 for (i=0; (i<num_reports) && (offset < size);i++){ 1525 // sanity checks on data_length: 1526 uint8_t data_length = packet[offset + 8]; 1527 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1528 if ((offset + 9u + data_length + 1u) > size) return; 1529 // setup event 1530 uint8_t event_size = 10u + data_length; 1531 uint16_t pos = 0; 1532 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1533 event[pos++] = event_size; 1534 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1535 offset += 8; 1536 pos += 8; 1537 event[pos++] = packet[offset + 1 + data_length]; // rssi 1538 event[pos++] = data_length; 1539 offset++; 1540 (void)memcpy(&event[pos], &packet[offset], data_length); 1541 pos += data_length; 1542 offset += data_length + 1u; // rssi 1543 hci_emit_event(event, pos, 1); 1544 } 1545 } 1546 1547 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1548 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1549 uint16_t offset = 3; 1550 uint8_t num_reports = packet[offset++]; 1551 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1552 uint8_t i; 1553 for (i=0; (i<num_reports) && (offset < size);i++){ 1554 // sanity checks on data_length: 1555 uint16_t data_length = packet[offset + 23]; 1556 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1557 if ((offset + 24u + data_length) > size) return; 1558 uint16_t event_type = little_endian_read_16(packet, offset); 1559 offset += 2; 1560 if ((event_type & 0x10) != 0) { 1561 // setup legacy event 1562 uint8_t legacy_event_type; 1563 switch (event_type){ 1564 case 0b0010011: 1565 // ADV_IND 1566 legacy_event_type = 0; 1567 break; 1568 case 0b0010101: 1569 // ADV_DIRECT_IND 1570 legacy_event_type = 1; 1571 break; 1572 case 0b0010010: 1573 // ADV_SCAN_IND 1574 legacy_event_type = 2; 1575 break; 1576 case 0b0010000: 1577 // ADV_NONCONN_IND 1578 legacy_event_type = 3; 1579 break; 1580 case 0b0011011: 1581 case 0b0011010: 1582 // SCAN_RSP 1583 legacy_event_type = 4; 1584 break; 1585 default: 1586 legacy_event_type = 0; 1587 break; 1588 } 1589 uint16_t pos = 0; 1590 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1591 event[pos++] = 10u + data_length; 1592 event[pos++] = legacy_event_type; 1593 // copy address type + address 1594 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1595 offset += 7; 1596 pos += 7; 1597 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1598 offset += 4; 1599 // copy rssi 1600 event[pos++] = packet[offset++]; 1601 // skip periodic advertising interval and direct address 1602 offset += 9; 1603 // copy data len + data; 1604 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1605 pos += 1 +data_length; 1606 offset += 1+ data_length; 1607 hci_emit_event(event, pos, 1); 1608 } else { 1609 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1610 uint8_t report_len = 24 + data_length; 1611 event[1] = report_len; 1612 little_endian_store_16(event, 2, event_type); 1613 memcpy(&event[4], &packet[offset], report_len); 1614 offset += report_len; 1615 hci_emit_event(event, 2 + report_len, 1); 1616 } 1617 } 1618 } 1619 #endif 1620 1621 #endif 1622 #endif 1623 1624 #ifdef ENABLE_BLE 1625 #ifdef ENABLE_LE_PERIPHERAL 1626 static void hci_update_advertisements_enabled_for_current_roles(void){ 1627 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1628 // get number of active le slave connections 1629 int num_slave_connections = 0; 1630 btstack_linked_list_iterator_t it; 1631 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1632 while (btstack_linked_list_iterator_has_next(&it)){ 1633 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1634 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1635 if (con->state != OPEN) continue; 1636 if (con->role != HCI_ROLE_SLAVE) continue; 1637 if (!hci_is_le_connection(con)) continue; 1638 num_slave_connections++; 1639 } 1640 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1641 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1642 } else { 1643 hci_stack->le_advertisements_enabled_for_current_roles = false; 1644 } 1645 } 1646 #endif 1647 #endif 1648 1649 #ifdef ENABLE_CLASSIC 1650 static void gap_run_set_local_name(void){ 1651 hci_reserve_packet_buffer(); 1652 uint8_t * packet = hci_stack->hci_packet_buffer; 1653 // construct HCI Command and send 1654 uint16_t opcode = hci_write_local_name.opcode; 1655 hci_stack->last_cmd_opcode = opcode; 1656 packet[0] = opcode & 0xff; 1657 packet[1] = opcode >> 8; 1658 packet[2] = DEVICE_NAME_LEN; 1659 memset(&packet[3], 0, DEVICE_NAME_LEN); 1660 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1661 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1662 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1663 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1664 // expand '00:00:00:00:00:00' in name with bd_addr 1665 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1666 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1667 } 1668 1669 static void gap_run_set_eir_data(void){ 1670 hci_reserve_packet_buffer(); 1671 uint8_t * packet = hci_stack->hci_packet_buffer; 1672 // construct HCI Command in-place and send 1673 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1674 hci_stack->last_cmd_opcode = opcode; 1675 uint16_t offset = 0; 1676 packet[offset++] = opcode & 0xff; 1677 packet[offset++] = opcode >> 8; 1678 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1679 packet[offset++] = 0; // FEC not required 1680 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1681 if (hci_stack->eir_data){ 1682 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1683 ad_context_t context; 1684 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1685 uint8_t data_type = ad_iterator_get_data_type(&context); 1686 uint8_t size = ad_iterator_get_data_len(&context); 1687 const uint8_t *data = ad_iterator_get_data(&context); 1688 // copy item 1689 packet[offset++] = size + 1; 1690 packet[offset++] = data_type; 1691 memcpy(&packet[offset], data, size); 1692 // update name item 1693 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1694 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1695 } 1696 offset += size; 1697 } 1698 } else { 1699 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1700 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1701 packet[offset++] = bytes_to_copy + 1; 1702 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1703 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1704 // expand '00:00:00:00:00:00' in name with bd_addr 1705 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1706 } 1707 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1708 } 1709 1710 static void hci_run_gap_tasks_classic(void){ 1711 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1712 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1713 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1714 return; 1715 } 1716 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1717 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1718 gap_run_set_local_name(); 1719 return; 1720 } 1721 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1722 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1723 gap_run_set_eir_data(); 1724 return; 1725 } 1726 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1727 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1728 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1729 return; 1730 } 1731 // write page scan activity 1732 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1733 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1734 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1735 return; 1736 } 1737 // write page scan type 1738 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1739 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1740 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1741 return; 1742 } 1743 // write page timeout 1744 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1745 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1746 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1747 return; 1748 } 1749 // send scan enable 1750 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1751 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1752 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1753 return; 1754 } 1755 // send write scan activity 1756 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1757 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1758 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1759 return; 1760 } 1761 // send write inquiry transmit power level 1762 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1763 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1764 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1765 return; 1766 } 1767 } 1768 #endif 1769 1770 #ifndef HAVE_HOST_CONTROLLER_API 1771 1772 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1773 if (!hci_stack->config) return 0; 1774 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1775 // Limit baud rate for Broadcom chipsets to 3 mbps 1776 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1777 baud_rate = 3000000; 1778 } 1779 return baud_rate; 1780 } 1781 1782 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1783 UNUSED(ds); 1784 1785 switch (hci_stack->substate){ 1786 case HCI_INIT_W4_SEND_RESET: 1787 log_info("Resend HCI Reset"); 1788 hci_stack->substate = HCI_INIT_SEND_RESET; 1789 hci_stack->num_cmd_packets = 1; 1790 hci_run(); 1791 break; 1792 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1793 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1794 if (hci_stack->hci_transport->reset_link){ 1795 hci_stack->hci_transport->reset_link(); 1796 } 1797 1798 /* fall through */ 1799 1800 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1801 log_info("Resend HCI Reset - CSR Warm Boot"); 1802 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1803 hci_stack->num_cmd_packets = 1; 1804 hci_run(); 1805 break; 1806 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1807 if (hci_stack->hci_transport->set_baudrate){ 1808 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1809 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1810 hci_stack->hci_transport->set_baudrate(baud_rate); 1811 } 1812 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1813 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1814 if (hci_stack->hci_transport->reset_link){ 1815 log_info("Link Reset"); 1816 hci_stack->hci_transport->reset_link(); 1817 } 1818 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1819 hci_run(); 1820 } 1821 break; 1822 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1823 // otherwise continue 1824 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1825 hci_send_cmd(&hci_read_local_supported_commands); 1826 break; 1827 default: 1828 break; 1829 } 1830 } 1831 #endif 1832 1833 static void hci_initializing_next_state(void){ 1834 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1835 } 1836 1837 static void hci_init_done(void){ 1838 // done. tell the app 1839 log_info("hci_init_done -> HCI_STATE_WORKING"); 1840 hci_stack->state = HCI_STATE_WORKING; 1841 hci_emit_state(); 1842 } 1843 1844 // assumption: hci_can_send_command_packet_now() == true 1845 static void hci_initializing_run(void){ 1846 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1847 1848 if (!hci_can_send_command_packet_now()) return; 1849 1850 #ifndef HAVE_HOST_CONTROLLER_API 1851 bool need_baud_change = hci_stack->config 1852 && hci_stack->chipset 1853 && hci_stack->chipset->set_baudrate_command 1854 && hci_stack->hci_transport->set_baudrate 1855 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1856 #endif 1857 1858 switch (hci_stack->substate){ 1859 case HCI_INIT_SEND_RESET: 1860 hci_state_reset(); 1861 1862 #ifndef HAVE_HOST_CONTROLLER_API 1863 // prepare reset if command complete not received in 100ms 1864 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1865 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1866 btstack_run_loop_add_timer(&hci_stack->timeout); 1867 #endif 1868 // send command 1869 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1870 hci_send_cmd(&hci_reset); 1871 break; 1872 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1873 hci_send_cmd(&hci_read_local_version_information); 1874 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1875 break; 1876 1877 #ifndef HAVE_HOST_CONTROLLER_API 1878 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1879 hci_state_reset(); 1880 // prepare reset if command complete not received in 100ms 1881 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1882 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1883 btstack_run_loop_add_timer(&hci_stack->timeout); 1884 // send command 1885 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1886 hci_send_cmd(&hci_reset); 1887 break; 1888 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1889 hci_state_reset(); 1890 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1891 hci_send_cmd(&hci_reset); 1892 break; 1893 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1894 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1895 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1896 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1897 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1898 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1899 break; 1900 } 1901 case HCI_INIT_SET_BD_ADDR: 1902 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1903 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1904 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1905 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1906 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1907 break; 1908 case HCI_INIT_SEND_READ_LOCAL_NAME: 1909 #ifdef ENABLE_CLASSIC 1910 hci_send_cmd(&hci_read_local_name); 1911 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1912 break; 1913 #endif 1914 /* fall through */ 1915 1916 case HCI_INIT_SEND_BAUD_CHANGE: 1917 if (need_baud_change) { 1918 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1919 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1920 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1921 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1922 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1923 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1924 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1925 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1926 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1927 btstack_run_loop_add_timer(&hci_stack->timeout); 1928 } 1929 break; 1930 } 1931 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1932 1933 /* fall through */ 1934 1935 case HCI_INIT_CUSTOM_INIT: 1936 case HCI_INIT_CUSTOM_PRE_INIT: 1937 // Custom initialization 1938 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1939 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1940 bool send_cmd = false; 1941 switch (hci_stack->chipset_result){ 1942 case BTSTACK_CHIPSET_VALID_COMMAND: 1943 send_cmd = true; 1944 switch (hci_stack->substate){ 1945 case HCI_INIT_CUSTOM_INIT: 1946 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1947 break; 1948 case HCI_INIT_CUSTOM_PRE_INIT: 1949 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1950 break; 1951 default: 1952 btstack_assert(false); 1953 break; 1954 } 1955 break; 1956 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1957 send_cmd = true; 1958 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1959 log_info("CSR Warm Boot"); 1960 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1961 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1962 btstack_run_loop_add_timer(&hci_stack->timeout); 1963 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1964 && hci_stack->config 1965 && hci_stack->chipset 1966 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1967 && hci_stack->hci_transport->set_baudrate 1968 && hci_transport_uart_get_main_baud_rate()){ 1969 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1970 } else { 1971 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1972 } 1973 break; 1974 default: 1975 break; 1976 } 1977 1978 if (send_cmd){ 1979 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1980 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1981 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1982 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1983 break; 1984 } 1985 log_info("Init script done"); 1986 1987 // Custom Pre-Init complete, start regular init with HCI Reset 1988 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 1989 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1990 hci_send_cmd(&hci_reset); 1991 break; 1992 } 1993 1994 // Init script download on Broadcom chipsets causes: 1995 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1996 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1997 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1998 1999 // - baud rate to reset, restore UART baud rate if needed 2000 if (need_baud_change) { 2001 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2002 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2003 hci_stack->hci_transport->set_baudrate(baud_rate); 2004 } 2005 2006 uint16_t bcm_delay_ms = 300; 2007 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2008 // -> Work around: wait here. 2009 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2010 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2011 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2012 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2013 btstack_run_loop_add_timer(&hci_stack->timeout); 2014 break; 2015 } 2016 } 2017 #endif 2018 /* fall through */ 2019 2020 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2021 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2022 hci_send_cmd(&hci_read_local_supported_commands); 2023 break; 2024 case HCI_INIT_READ_BD_ADDR: 2025 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2026 hci_send_cmd(&hci_read_bd_addr); 2027 break; 2028 case HCI_INIT_READ_BUFFER_SIZE: 2029 // only read buffer size if supported 2030 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2031 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2032 hci_send_cmd(&hci_read_buffer_size); 2033 break; 2034 } 2035 2036 /* fall through */ 2037 2038 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2039 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2040 hci_send_cmd(&hci_read_local_supported_features); 2041 break; 2042 2043 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2044 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2045 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2046 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2047 break; 2048 case HCI_INIT_HOST_BUFFER_SIZE: 2049 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2050 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2051 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2052 break; 2053 #endif 2054 2055 case HCI_INIT_SET_EVENT_MASK: 2056 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2057 if (hci_le_supported()){ 2058 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2059 } else { 2060 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2061 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2062 } 2063 break; 2064 2065 case HCI_INIT_SET_EVENT_MASK_2: 2066 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2067 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2068 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2069 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2070 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2071 // Encryption Change Event v2 - bit 25 2072 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2073 break; 2074 } 2075 2076 #ifdef ENABLE_CLASSIC 2077 /* fall through */ 2078 2079 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2080 if (hci_classic_supported() && gap_ssp_supported()){ 2081 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2082 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2083 break; 2084 } 2085 2086 /* fall through */ 2087 2088 case HCI_INIT_WRITE_INQUIRY_MODE: 2089 if (hci_classic_supported()){ 2090 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2091 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2092 break; 2093 } 2094 2095 /* fall through */ 2096 2097 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2098 // skip write secure connections host support if not supported or disabled 2099 if (hci_classic_supported() && hci_stack->secure_connections_enable 2100 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2101 hci_stack->secure_connections_active = true; 2102 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2103 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2104 break; 2105 } 2106 2107 /* fall through */ 2108 2109 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2110 // skip set min encryption key size 2111 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2112 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2113 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2114 break; 2115 } 2116 2117 #ifdef ENABLE_SCO_OVER_HCI 2118 /* fall through */ 2119 2120 // only sent if ENABLE_SCO_OVER_HCI is defined 2121 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2122 // skip write synchronous flow control if not supported 2123 if (hci_classic_supported() 2124 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2125 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2126 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2127 break; 2128 } 2129 /* fall through */ 2130 2131 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2132 // skip write default erroneous data reporting if not supported 2133 if (hci_classic_supported() 2134 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2135 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2136 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2137 break; 2138 } 2139 #endif 2140 2141 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2142 /* fall through */ 2143 2144 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2145 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2146 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2147 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2148 #ifdef ENABLE_SCO_OVER_HCI 2149 log_info("BCM: Route SCO data via HCI transport"); 2150 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2151 #endif 2152 #ifdef ENABLE_SCO_OVER_PCM 2153 log_info("BCM: Route SCO data via PCM interface"); 2154 #ifdef ENABLE_BCM_PCM_WBS 2155 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2156 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2157 #else 2158 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2159 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2160 #endif 2161 #endif 2162 break; 2163 } 2164 #endif 2165 2166 #ifdef ENABLE_SCO_OVER_PCM 2167 /* fall through */ 2168 2169 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2170 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2171 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2172 log_info("BCM: Config PCM interface for I2S"); 2173 #ifdef ENABLE_BCM_PCM_WBS 2174 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2175 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2176 #else 2177 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2178 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2179 #endif 2180 break; 2181 } 2182 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2183 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2184 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2185 log_info("BCM: Config PCM Data format"); 2186 // msb first, fill bits 0, left justified 2187 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2188 break; 2189 } 2190 #endif 2191 #endif 2192 2193 #ifdef ENABLE_BLE 2194 /* fall through */ 2195 2196 // LE INIT 2197 case HCI_INIT_LE_READ_BUFFER_SIZE: 2198 if (hci_le_supported()){ 2199 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2200 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2201 hci_send_cmd(&hci_le_read_buffer_size_v2); 2202 } else { 2203 hci_send_cmd(&hci_le_read_buffer_size); 2204 } 2205 break; 2206 } 2207 2208 /* fall through */ 2209 2210 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2211 // skip write le host if not supported (e.g. on LE only EM9301) 2212 if (hci_le_supported() 2213 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2214 // LE Supported Host = 1, Simultaneous Host = 0 2215 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2216 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2217 break; 2218 } 2219 2220 /* fall through */ 2221 2222 case HCI_INIT_LE_SET_EVENT_MASK: 2223 if (hci_le_supported()){ 2224 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2225 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2226 break; 2227 } 2228 #endif 2229 2230 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2231 /* fall through */ 2232 2233 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2234 if (hci_le_supported() 2235 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2236 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2237 hci_send_cmd(&hci_le_read_maximum_data_length); 2238 break; 2239 } 2240 2241 /* fall through */ 2242 2243 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2244 if (hci_le_supported() 2245 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2246 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2247 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2248 break; 2249 } 2250 #endif 2251 2252 #ifdef ENABLE_LE_CENTRAL 2253 /* fall through */ 2254 2255 case HCI_INIT_READ_WHITE_LIST_SIZE: 2256 if (hci_le_supported()){ 2257 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2258 hci_send_cmd(&hci_le_read_white_list_size); 2259 break; 2260 } 2261 2262 #endif 2263 2264 #ifdef ENABLE_LE_PERIPHERAL 2265 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2266 /* fall through */ 2267 2268 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2269 if (hci_extended_advertising_supported()){ 2270 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2271 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2272 break; 2273 } 2274 #endif 2275 #endif 2276 /* fall through */ 2277 2278 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2279 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2280 if (hci_le_supported()) { 2281 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2282 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2283 break; 2284 } 2285 #endif 2286 2287 /* fall through */ 2288 2289 case HCI_INIT_DONE: 2290 hci_stack->substate = HCI_INIT_DONE; 2291 // main init sequence complete 2292 #ifdef ENABLE_CLASSIC 2293 // check if initial Classic GAP Tasks are completed 2294 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2295 hci_run_gap_tasks_classic(); 2296 break; 2297 } 2298 #endif 2299 #ifdef ENABLE_BLE 2300 #ifdef ENABLE_LE_CENTRAL 2301 // check if initial LE GAP Tasks are completed 2302 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2303 hci_run_general_gap_le(); 2304 break; 2305 } 2306 #endif 2307 #endif 2308 hci_init_done(); 2309 break; 2310 2311 default: 2312 return; 2313 } 2314 } 2315 2316 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2317 bool command_completed = false; 2318 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2319 uint16_t opcode = little_endian_read_16(packet,3); 2320 if (opcode == hci_stack->last_cmd_opcode){ 2321 command_completed = true; 2322 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2323 } else { 2324 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2325 } 2326 } 2327 2328 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2329 uint8_t status = packet[2]; 2330 uint16_t opcode = little_endian_read_16(packet,4); 2331 if (opcode == hci_stack->last_cmd_opcode){ 2332 if (status){ 2333 command_completed = true; 2334 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2335 } else { 2336 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2337 } 2338 } else { 2339 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2340 } 2341 } 2342 #ifndef HAVE_HOST_CONTROLLER_API 2343 // Vendor == CSR 2344 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2345 // TODO: track actual command 2346 command_completed = true; 2347 } 2348 2349 // Vendor == Toshiba 2350 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2351 // TODO: track actual command 2352 command_completed = true; 2353 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2354 hci_stack->num_cmd_packets = 1; 2355 } 2356 #endif 2357 2358 return command_completed; 2359 } 2360 2361 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2362 2363 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2364 2365 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2366 2367 #ifndef HAVE_HOST_CONTROLLER_API 2368 2369 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2370 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2371 // 2372 // HCI Reset 2373 // Timeout 100 ms 2374 // HCI Reset 2375 // Command Complete Reset 2376 // HCI Read Local Version Information 2377 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2378 // hang... 2379 // 2380 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2381 if (!command_completed 2382 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2383 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2384 2385 uint16_t opcode = little_endian_read_16(packet,3); 2386 if (opcode == hci_reset.opcode){ 2387 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2388 return; 2389 } 2390 } 2391 2392 // CSR & H5 2393 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2394 if (!command_completed 2395 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2396 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2397 2398 uint16_t opcode = little_endian_read_16(packet,3); 2399 if (opcode == hci_reset.opcode){ 2400 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2401 return; 2402 } 2403 } 2404 2405 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2406 // fix: Correct substate and behave as command below 2407 if (command_completed){ 2408 switch (hci_stack->substate){ 2409 case HCI_INIT_SEND_RESET: 2410 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2411 break; 2412 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2413 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2414 break; 2415 default: 2416 break; 2417 } 2418 } 2419 2420 #endif 2421 2422 if (!command_completed) return; 2423 2424 bool need_baud_change = false; 2425 bool need_addr_change = false; 2426 2427 #ifndef HAVE_HOST_CONTROLLER_API 2428 need_baud_change = hci_stack->config 2429 && hci_stack->chipset 2430 && hci_stack->chipset->set_baudrate_command 2431 && hci_stack->hci_transport->set_baudrate 2432 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2433 2434 need_addr_change = hci_stack->custom_bd_addr_set 2435 && hci_stack->chipset 2436 && hci_stack->chipset->set_bd_addr_command; 2437 #endif 2438 2439 switch(hci_stack->substate){ 2440 2441 #ifndef HAVE_HOST_CONTROLLER_API 2442 case HCI_INIT_SEND_RESET: 2443 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2444 // fix: just correct substate and behave as command below 2445 2446 /* fall through */ 2447 #endif 2448 2449 case HCI_INIT_W4_SEND_RESET: 2450 btstack_run_loop_remove_timer(&hci_stack->timeout); 2451 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2452 return; 2453 2454 #ifndef HAVE_HOST_CONTROLLER_API 2455 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2456 // for STLC2500D, baud rate change already happened. 2457 // for others, baud rate gets changed now 2458 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2459 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2460 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2461 hci_stack->hci_transport->set_baudrate(baud_rate); 2462 } 2463 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2464 return; 2465 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2466 btstack_run_loop_remove_timer(&hci_stack->timeout); 2467 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2468 return; 2469 case HCI_INIT_W4_CUSTOM_INIT: 2470 // repeat custom init 2471 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2472 return; 2473 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2474 // repeat custom init 2475 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2476 return; 2477 #endif 2478 2479 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2480 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2481 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2482 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2483 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2484 return; 2485 } 2486 if (need_addr_change){ 2487 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2488 return; 2489 } 2490 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2491 return; 2492 #ifndef HAVE_HOST_CONTROLLER_API 2493 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2494 if (need_baud_change){ 2495 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2496 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2497 hci_stack->hci_transport->set_baudrate(baud_rate); 2498 } 2499 if (need_addr_change){ 2500 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2501 return; 2502 } 2503 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2504 return; 2505 case HCI_INIT_W4_SET_BD_ADDR: 2506 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2507 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2508 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2509 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2510 return; 2511 } 2512 // skipping st warm boot 2513 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2514 return; 2515 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2516 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2517 return; 2518 #endif 2519 2520 case HCI_INIT_DONE: 2521 // set state if we came here by fall through 2522 hci_stack->substate = HCI_INIT_DONE; 2523 return; 2524 2525 default: 2526 break; 2527 } 2528 hci_initializing_next_state(); 2529 } 2530 2531 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2532 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2533 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2534 // check if we have been aware of the HCI connection 2535 switch (conn->state){ 2536 case SENT_CREATE_CONNECTION: 2537 case RECEIVED_CONNECTION_REQUEST: 2538 case ACCEPTED_CONNECTION_REQUEST: 2539 break; 2540 default: 2541 return; 2542 } 2543 2544 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2545 bd_addr_t bd_address; 2546 (void)memcpy(&bd_address, conn->address, 6); 2547 2548 #ifdef ENABLE_CLASSIC 2549 // cache needed data 2550 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2551 #endif 2552 2553 // connection failed, remove entry 2554 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2555 btstack_memory_hci_connection_free( conn ); 2556 2557 #ifdef ENABLE_CLASSIC 2558 // notify client if dedicated bonding 2559 if (notify_dedicated_bonding_failed){ 2560 log_info("hci notify_dedicated_bonding_failed"); 2561 hci_emit_dedicated_bonding_result(bd_address, status); 2562 } 2563 2564 // if authentication error, also delete link key 2565 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2566 gap_drop_link_key_for_bd_addr(bd_address); 2567 } 2568 #else 2569 UNUSED(status); 2570 #endif 2571 } 2572 2573 #ifdef ENABLE_CLASSIC 2574 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2575 // SSP Controller 2576 if (features[6] & (1 << 3)){ 2577 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2578 } 2579 // eSCO 2580 if (features[3] & (1<<7)){ 2581 conn->remote_supported_features[0] |= 1; 2582 } 2583 // Extended features 2584 if (features[7] & (1<<7)){ 2585 conn->remote_supported_features[0] |= 2; 2586 } 2587 // SCO packet types 2588 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2589 } 2590 2591 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2592 // SSP Host 2593 if (features[0] & (1 << 0)){ 2594 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2595 } 2596 // SC Host 2597 if (features[0] & (1 << 3)){ 2598 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2599 } 2600 } 2601 2602 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2603 // SC Controller 2604 if (features[1] & (1 << 0)){ 2605 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2606 } 2607 } 2608 2609 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2610 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2611 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2612 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2613 if (conn->bonding_flags & BONDING_DEDICATED){ 2614 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2615 } 2616 } 2617 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2618 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2619 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2620 } 2621 2622 #endif 2623 2624 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2625 // handle BT initialization 2626 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2627 hci_initializing_event_handler(packet, size); 2628 } 2629 2630 // help with BT sleep 2631 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2632 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2633 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2634 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2635 hci_initializing_next_state(); 2636 } 2637 } 2638 2639 #ifdef ENABLE_CLASSIC 2640 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2641 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2642 conn->requested_security_level = LEVEL_0; 2643 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2644 hci_emit_security_level(conn->con_handle, security_level); 2645 2646 // dedicated bonding 2647 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2648 conn->bonding_flags &= ~BONDING_DEDICATED; 2649 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2650 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2651 // emit dedicated bonding complete, don't disconnect 2652 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2653 #else 2654 // request disconnect, event is emitted after disconnect 2655 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2656 #endif 2657 } 2658 } 2659 2660 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2661 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2662 conn->encryption_key_size = encryption_key_size; 2663 2664 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2665 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2666 hci_handle_mutual_authentication_completed(conn); 2667 } else { 2668 // otherwise trigger remote feature request and send authentication request 2669 hci_trigger_remote_features_for_connection(conn); 2670 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2671 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2672 } 2673 } 2674 } 2675 #endif 2676 2677 static void hci_store_local_supported_commands(const uint8_t * packet){ 2678 // create mapping table 2679 #define X(name, offset, bit) { offset, bit }, 2680 static struct { 2681 uint8_t byte_offset; 2682 uint8_t bit_position; 2683 } supported_hci_commands_map [] = { 2684 SUPPORTED_HCI_COMMANDS 2685 }; 2686 #undef X 2687 2688 // create names for debug purposes 2689 #ifdef ENABLE_LOG_DEBUG 2690 #define X(name, offset, bit) #name, 2691 static const char * command_names[] = { 2692 SUPPORTED_HCI_COMMANDS 2693 }; 2694 #undef X 2695 #endif 2696 2697 hci_stack->local_supported_commands = 0; 2698 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2699 uint16_t i; 2700 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2701 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2702 #ifdef ENABLE_LOG_DEBUG 2703 log_info("Command %s (%u) supported %u/%u", command_names[i], i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2704 #else 2705 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2706 #endif 2707 hci_stack->local_supported_commands |= (1LU << i); 2708 } 2709 } 2710 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2711 } 2712 2713 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2714 UNUSED(size); 2715 2716 uint16_t manufacturer; 2717 #ifdef ENABLE_CLASSIC 2718 hci_con_handle_t handle; 2719 hci_connection_t * conn; 2720 #endif 2721 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2722 uint8_t status; 2723 #endif 2724 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2725 le_audio_cig_t * cig; 2726 #endif 2727 2728 // get num cmd packets - limit to 1 to reduce complexity 2729 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2730 2731 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2732 switch (opcode){ 2733 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2734 if (packet[5]) break; 2735 // terminate, name 248 chars 2736 packet[6+248] = 0; 2737 log_info("local name: %s", &packet[6]); 2738 break; 2739 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2740 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2741 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2742 uint16_t acl_len = little_endian_read_16(packet, 6); 2743 uint16_t sco_len = packet[8]; 2744 2745 // determine usable ACL/SCO payload size 2746 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2747 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2748 2749 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2750 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2751 2752 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2753 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2754 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2755 } 2756 break; 2757 case HCI_OPCODE_HCI_READ_RSSI: 2758 if (packet[5] == ERROR_CODE_SUCCESS){ 2759 uint8_t event[5]; 2760 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2761 event[1] = 3; 2762 (void)memcpy(&event[2], &packet[6], 3); 2763 hci_emit_event(event, sizeof(event), 1); 2764 } 2765 break; 2766 #ifdef ENABLE_BLE 2767 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2768 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2769 hci_stack->le_iso_packets_total_num = packet[11]; 2770 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2771 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2772 2773 /* fall through */ 2774 2775 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2776 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2777 hci_stack->le_acl_packets_total_num = packet[8]; 2778 // determine usable ACL payload size 2779 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2780 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2781 } 2782 log_info("hci_le_read_buffer_size: acl size %u, acl count %u", hci_stack->le_data_packets_length, hci_stack->le_acl_packets_total_num); 2783 break; 2784 #endif 2785 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2786 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2787 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2788 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2789 log_info("hci_le_read_maximum_data_length: tx octets %u, tx time %u us", hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2790 break; 2791 #endif 2792 #ifdef ENABLE_LE_CENTRAL 2793 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2794 hci_stack->le_whitelist_capacity = packet[6]; 2795 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2796 break; 2797 #endif 2798 #ifdef ENABLE_LE_PERIPHERAL 2799 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2800 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2801 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2802 break; 2803 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2804 if (hci_stack->le_advertising_set_in_current_command != 0) { 2805 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2806 hci_stack->le_advertising_set_in_current_command = 0; 2807 if (advertising_set == NULL) break; 2808 uint8_t adv_status = packet[6]; 2809 uint8_t tx_power = packet[7]; 2810 uint8_t event[] = { HCI_EVENT_META_GAP, 4, GAP_SUBEVENT_ADVERTISING_SET_INSTALLED, hci_stack->le_advertising_set_in_current_command, adv_status, tx_power }; 2811 if (adv_status == 0){ 2812 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2813 } 2814 hci_emit_event(event, sizeof(event), 1); 2815 } 2816 break; 2817 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2818 if (hci_stack->le_advertising_set_in_current_command != 0) { 2819 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2820 hci_stack->le_advertising_set_in_current_command = 0; 2821 if (advertising_set == NULL) break; 2822 uint8_t adv_status = packet[5]; 2823 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2824 if (adv_status == 0){ 2825 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2826 } 2827 hci_emit_event(event, sizeof(event), 1); 2828 } 2829 break; 2830 #endif 2831 #endif 2832 case HCI_OPCODE_HCI_READ_BD_ADDR: 2833 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2834 log_info("Local Address, Status: 0x%02x: Addr: %s", packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(hci_stack->local_bd_addr)); 2835 #ifdef ENABLE_CLASSIC 2836 if (hci_stack->link_key_db){ 2837 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2838 } 2839 #endif 2840 break; 2841 #ifdef ENABLE_CLASSIC 2842 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2843 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2844 break; 2845 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2846 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2847 if (status == ERROR_CODE_SUCCESS) { 2848 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2849 } else { 2850 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2851 } 2852 break; 2853 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2854 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2855 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2856 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2857 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2858 hci_emit_event(event, sizeof(event), 1); 2859 } 2860 break; 2861 #endif 2862 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2863 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2864 2865 #ifdef ENABLE_CLASSIC 2866 // determine usable ACL packet types based on host buffer size and supported features 2867 hci_stack->usable_packet_types_acl = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2868 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2869 // determine usable SCO packet types based on supported features 2870 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2871 &hci_stack->local_supported_features[0]); 2872 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2873 #endif 2874 // Classic/LE 2875 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2876 break; 2877 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2878 manufacturer = little_endian_read_16(packet, 10); 2879 // map Cypress & Infineon to Broadcom 2880 switch (manufacturer){ 2881 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2882 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2883 log_info("Treat Cypress/Infineon as Broadcom"); 2884 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2885 little_endian_store_16(packet, 10, manufacturer); 2886 break; 2887 default: 2888 break; 2889 } 2890 hci_stack->manufacturer = manufacturer; 2891 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2892 break; 2893 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2894 hci_store_local_supported_commands(packet); 2895 break; 2896 #ifdef ENABLE_CLASSIC 2897 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2898 if (packet[5]) return; 2899 hci_stack->synchronous_flow_control_enabled = 1; 2900 break; 2901 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2902 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2903 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2904 conn = hci_connection_for_handle(handle); 2905 if (conn != NULL) { 2906 uint8_t key_size = 0; 2907 if (status == 0){ 2908 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2909 log_info("Handle %04x key Size: %u", handle, key_size); 2910 } else { 2911 key_size = 1; 2912 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2913 } 2914 hci_handle_read_encryption_key_size_complete(conn, key_size); 2915 } 2916 break; 2917 // assert pairing complete event is emitted. 2918 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2919 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2920 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2921 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2922 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2923 // lookup connection by gap pairing addr 2924 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2925 if (conn == NULL) break; 2926 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2927 break; 2928 2929 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2930 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2931 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2932 uint8_t event[67]; 2933 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2934 event[1] = 65; 2935 (void)memset(&event[2], 0, 65); 2936 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2937 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2938 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2939 event[2] = 3; 2940 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2941 } else { 2942 event[2] = 1; 2943 } 2944 } 2945 hci_emit_event(event, sizeof(event), 0); 2946 break; 2947 } 2948 2949 // note: only needed if user does not provide OOB data 2950 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2951 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2952 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2953 if (conn == NULL) break; 2954 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2955 break; 2956 #endif 2957 #endif 2958 #ifdef ENABLE_BLE 2959 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2960 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2961 // lookup CIG 2962 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2963 if (cig != NULL){ 2964 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2965 uint8_t i = 0; 2966 if (status == ERROR_CODE_SUCCESS){ 2967 // assign CIS handles to pre-allocated CIS 2968 btstack_linked_list_iterator_t it; 2969 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2970 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2971 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2972 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2973 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2974 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2975 iso_stream->cis_handle = cis_handle; 2976 cig->cis_con_handles[i] = cis_handle; 2977 i++; 2978 } 2979 } 2980 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2981 hci_emit_cig_created(cig, status); 2982 } else { 2983 hci_emit_cig_created(cig, status); 2984 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2985 } 2986 } 2987 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2988 break; 2989 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2990 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2991 if (status != ERROR_CODE_SUCCESS){ 2992 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2993 } 2994 break; 2995 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2996 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2997 if (status != ERROR_CODE_SUCCESS){ 2998 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2999 } 3000 break; 3001 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3002 // lookup BIG by state 3003 btstack_linked_list_iterator_t it; 3004 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3005 while (btstack_linked_list_iterator_has_next(&it)) { 3006 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3007 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3008 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 3009 if (status == ERROR_CODE_SUCCESS){ 3010 big->state_vars.next_bis++; 3011 if (big->state_vars.next_bis == big->num_bis){ 3012 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3013 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3014 } else { 3015 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3016 } 3017 } else { 3018 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3019 big->state_vars.status = status; 3020 } 3021 return; 3022 } 3023 } 3024 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3025 while (btstack_linked_list_iterator_has_next(&it)) { 3026 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3027 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3028 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 3029 if (status == ERROR_CODE_SUCCESS){ 3030 big_sync->state_vars.next_bis++; 3031 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3032 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3033 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3034 } else { 3035 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3036 } 3037 } else { 3038 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3039 big_sync->state_vars.status = status; 3040 } 3041 return; 3042 } 3043 } 3044 // Lookup CIS via active group operation 3045 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3046 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3047 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3048 3049 // lookup CIS by state 3050 btstack_linked_list_iterator_t it; 3051 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3052 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 3053 while (btstack_linked_list_iterator_has_next(&it)){ 3054 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3055 handle = iso_stream->cis_handle; 3056 bool emit_cis_created = false; 3057 switch (iso_stream->state){ 3058 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3059 if (status != ERROR_CODE_SUCCESS){ 3060 emit_cis_created = true; 3061 break; 3062 } 3063 if (iso_stream->max_sdu_c_to_p > 0){ 3064 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3065 } else { 3066 emit_cis_created = true; 3067 } 3068 break; 3069 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3070 emit_cis_created = true; 3071 break; 3072 default: 3073 break; 3074 } 3075 if (emit_cis_created){ 3076 hci_cis_handle_created(iso_stream, status); 3077 } 3078 } 3079 } else { 3080 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3081 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3082 if (cig != NULL) { 3083 // emit cis created if all ISO Paths have been created 3084 // assume we are central 3085 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3086 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3087 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3088 // if outgoing has been setup, or incoming was setup but outgoing not required 3089 if ((cis_direction == 1) || (outgoing_needed == false)){ 3090 // lookup iso stream by cig/cis 3091 while (btstack_linked_list_iterator_has_next(&it)) { 3092 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3093 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3094 hci_cis_handle_created(iso_stream, status); 3095 } 3096 } 3097 } 3098 // next state 3099 cig->state_vars.next_cis++; 3100 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3101 } 3102 } 3103 } 3104 break; 3105 } 3106 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3107 // lookup BIG by state 3108 btstack_linked_list_iterator_t it; 3109 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3110 while (btstack_linked_list_iterator_has_next(&it)) { 3111 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3112 uint8_t big_handle = big_sync->big_handle; 3113 switch (big_sync->state){ 3114 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3115 btstack_linked_list_iterator_remove(&it); 3116 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3117 return; 3118 default: 3119 btstack_linked_list_iterator_remove(&it); 3120 hci_emit_big_sync_stopped(big_handle); 3121 return; 3122 } 3123 } 3124 break; 3125 } 3126 #endif 3127 #endif 3128 default: 3129 break; 3130 } 3131 } 3132 3133 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3134 UNUSED(size); 3135 3136 // get num cmd packets - limit to 1 to reduce complexity 3137 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3138 3139 // get opcode and command status 3140 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3141 3142 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3143 uint8_t status = hci_event_command_status_get_status(packet); 3144 #endif 3145 3146 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3147 bd_addr_type_t addr_type; 3148 bd_addr_t addr; 3149 #endif 3150 3151 switch (opcode){ 3152 #ifdef ENABLE_CLASSIC 3153 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3154 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3155 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3156 #endif 3157 #ifdef ENABLE_LE_CENTRAL 3158 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3159 #endif 3160 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3161 addr_type = hci_stack->outgoing_addr_type; 3162 memcpy(addr, hci_stack->outgoing_addr, 6); 3163 3164 // reset outgoing address info 3165 memset(hci_stack->outgoing_addr, 0, 6); 3166 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3167 3168 // on error 3169 if (status != ERROR_CODE_SUCCESS){ 3170 #ifdef ENABLE_LE_CENTRAL 3171 if (hci_is_le_connection_type(addr_type)){ 3172 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3173 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3174 } 3175 #endif 3176 // error => outgoing connection failed 3177 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3178 if (conn != NULL){ 3179 hci_handle_connection_failed(conn, status); 3180 } 3181 } 3182 break; 3183 #endif 3184 #ifdef ENABLE_CLASSIC 3185 case HCI_OPCODE_HCI_INQUIRY: 3186 if (status == ERROR_CODE_SUCCESS) { 3187 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3188 } else { 3189 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3190 } 3191 break; 3192 #endif 3193 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3194 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3195 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3196 if (status == ERROR_CODE_SUCCESS){ 3197 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3198 } else { 3199 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3200 } 3201 break; 3202 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3203 default: 3204 break; 3205 } 3206 } 3207 3208 #ifdef ENABLE_BLE 3209 static void event_handle_le_connection_complete(const uint8_t * packet){ 3210 bd_addr_t addr; 3211 bd_addr_type_t addr_type; 3212 hci_connection_t * conn; 3213 3214 // read fields 3215 uint8_t status = packet[3]; 3216 hci_role_t role = (hci_role_t) packet[6]; 3217 3218 // support different connection complete events 3219 uint16_t conn_interval; 3220 switch (packet[2]){ 3221 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3222 conn_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3223 break; 3224 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3225 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3226 conn_interval = hci_subevent_le_enhanced_connection_complete_v1_get_conn_interval(packet); 3227 break; 3228 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3229 conn_interval = hci_subevent_le_enhanced_connection_complete_v2_get_conn_interval(packet); 3230 break; 3231 #endif 3232 default: 3233 btstack_unreachable(); 3234 return; 3235 } 3236 3237 // Connection management 3238 reverse_bd_addr(&packet[8], addr); 3239 addr_type = (bd_addr_type_t)packet[7]; 3240 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3241 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3242 3243 #ifdef ENABLE_LE_CENTRAL 3244 // handle error: error is reported only to the initiator -> outgoing connection 3245 if (status){ 3246 3247 // handle cancelled outgoing connection 3248 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3249 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3250 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3251 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3252 // reset state 3253 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3254 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3255 // get outgoing connection conn struct for direct connect 3256 conn = gap_get_outgoing_connection(); 3257 } 3258 3259 // outgoing le connection establishment is done 3260 if (conn){ 3261 // remove entry 3262 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3263 btstack_memory_hci_connection_free( conn ); 3264 } 3265 return; 3266 } 3267 #endif 3268 3269 // on success, both hosts receive connection complete event 3270 if (role == HCI_ROLE_MASTER){ 3271 #ifdef ENABLE_LE_CENTRAL 3272 // if we're master on an le connection, it was an outgoing connection and we're done with it 3273 // note: no hci_connection_t object exists yet for connect with whitelist 3274 if (hci_is_le_connection_type(addr_type)){ 3275 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3276 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3277 } 3278 #endif 3279 } else { 3280 #ifdef ENABLE_LE_PERIPHERAL 3281 // if we're slave, it was an incoming connection, advertisements have stopped 3282 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3283 #endif 3284 } 3285 3286 // LE connections are auto-accepted, so just create a connection if there isn't one already 3287 if (!conn){ 3288 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3289 } 3290 3291 // no memory, sorry. 3292 if (!conn){ 3293 return; 3294 } 3295 3296 conn->state = OPEN; 3297 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3298 conn->le_connection_interval = conn_interval; 3299 3300 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3301 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3302 3303 #ifdef ENABLE_LE_PERIPHERAL 3304 if (role == HCI_ROLE_SLAVE){ 3305 hci_update_advertisements_enabled_for_current_roles(); 3306 } 3307 #endif 3308 3309 // init unenhanced att bearer mtu 3310 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3311 conn->att_connection.mtu_exchanged = false; 3312 3313 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3314 3315 // restart timer 3316 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3317 // btstack_run_loop_add_timer(&conn->timeout); 3318 3319 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3320 3321 hci_emit_nr_connections_changed(); 3322 } 3323 #endif 3324 3325 #ifdef ENABLE_CLASSIC 3326 static bool hci_ssp_security_level_possible_for_io_cap(gap_security_level_t level, uint8_t io_cap_local, uint8_t io_cap_remote){ 3327 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3328 // LEVEL_4 is tested by l2cap 3329 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3330 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3331 if (level >= LEVEL_3){ 3332 // MITM not possible without keyboard or display 3333 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3334 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3335 3336 // MITM possible if one side has keyboard and the other has keyboard or display 3337 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3338 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3339 3340 // MITM not possible if one side has only display and other side has no keyboard 3341 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3342 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3343 } 3344 // LEVEL 2 requires SSP, which is a given 3345 return true; 3346 } 3347 3348 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3349 // get requested security level 3350 gap_security_level_t requested_security_level = conn->requested_security_level; 3351 if (hci_stack->gap_secure_connections_only_mode){ 3352 requested_security_level = LEVEL_4; 3353 } 3354 3355 // assess security: LEVEL 4 requires SC 3356 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3357 if ((requested_security_level == LEVEL_4) && 3358 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3359 !hci_remote_sc_enabled(conn)){ 3360 log_info("Level 4 required, but SC not supported -> abort"); 3361 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3362 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3363 return; 3364 } 3365 3366 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3367 // - GAP/MOD/NBON/BV-02-C 3368 // - GAP/DM/NBON/BV-01-C 3369 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3370 switch (conn->io_cap_response_auth_req){ 3371 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3372 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3373 if (hci_stack->bondable == false){ 3374 log_info("Dedicated vs. non-bondable -> abort"); 3375 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3376 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3377 return; 3378 } 3379 default: 3380 break; 3381 } 3382 } 3383 3384 // assess security based on io capabilities 3385 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3386 // responder: fully validate io caps of both sides as well as OOB data 3387 bool security_possible = false; 3388 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3389 3390 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3391 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3392 // so we merge the OOB data availability 3393 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3394 if (conn->classic_oob_c_192 != NULL){ 3395 have_oob_data |= 1; 3396 } 3397 if (conn->classic_oob_c_256 != NULL){ 3398 have_oob_data |= 2; 3399 } 3400 // for up to Level 3, either P-192 as well as P-256 will do 3401 // if we don't support SC, then a) conn->classic_oob_c_256 will be NULL and b) remote should not report P-256 available 3402 // if remote does not SC, we should not receive P-256 data either 3403 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3404 security_possible = true; 3405 } 3406 // for Level 4, P-256 is needed 3407 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3408 security_possible = true; 3409 } 3410 #endif 3411 3412 if (security_possible == false){ 3413 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3414 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3415 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3416 return; 3417 } 3418 } else { 3419 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3420 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3421 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3422 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3423 log_info("Level 3+ required, but no input/output -> abort"); 3424 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3425 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3426 return; 3427 } 3428 #endif 3429 #endif 3430 } 3431 3432 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3433 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3434 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3435 } else { 3436 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3437 } 3438 #endif 3439 } 3440 3441 #endif 3442 3443 static void event_handler(uint8_t *packet, uint16_t size){ 3444 3445 uint16_t event_length = packet[1]; 3446 3447 // assert packet is complete 3448 if (size != (event_length + 2u)){ 3449 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3450 return; 3451 } 3452 3453 hci_con_handle_t handle; 3454 hci_connection_t * conn; 3455 int i; 3456 3457 #ifdef ENABLE_CLASSIC 3458 hci_link_type_t link_type; 3459 bd_addr_t addr; 3460 bd_addr_type_t addr_type; 3461 #endif 3462 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3463 hci_iso_stream_t * iso_stream; 3464 le_audio_big_t * big; 3465 le_audio_big_sync_t * big_sync; 3466 #endif 3467 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3468 btstack_linked_list_iterator_t it; 3469 #endif 3470 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3471 uint8_t advertising_handle; 3472 #endif 3473 3474 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3475 3476 switch (hci_event_packet_get_type(packet)) { 3477 3478 case HCI_EVENT_COMMAND_COMPLETE: 3479 handle_command_complete_event(packet, size); 3480 break; 3481 3482 case HCI_EVENT_COMMAND_STATUS: 3483 handle_command_status_event(packet, size); 3484 break; 3485 3486 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3487 if (size < 3) return; 3488 uint16_t num_handles = packet[2]; 3489 if (size != (3u + num_handles * 4u)) return; 3490 #ifdef ENABLE_CLASSIC 3491 bool notify_sco = false; 3492 #endif 3493 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3494 bool notify_iso = false; 3495 #endif 3496 uint16_t offset = 3; 3497 for (i=0; i<num_handles;i++){ 3498 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3499 offset += 2u; 3500 uint16_t num_packets = little_endian_read_16(packet, offset); 3501 offset += 2u; 3502 3503 conn = hci_connection_for_handle(handle); 3504 if (conn != NULL) { 3505 3506 if (conn->num_packets_sent >= num_packets) { 3507 conn->num_packets_sent -= num_packets; 3508 } else { 3509 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3510 conn->num_packets_sent = 0; 3511 } 3512 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3513 #ifdef ENABLE_CLASSIC 3514 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3515 notify_sco = true; 3516 } 3517 #endif 3518 } 3519 3520 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3521 hci_controller_dump_packets(); 3522 #endif 3523 3524 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3525 if (conn == NULL){ 3526 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3527 if (iso_stream != NULL){ 3528 if (iso_stream->num_packets_sent >= num_packets) { 3529 iso_stream->num_packets_sent -= num_packets; 3530 } else { 3531 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3532 iso_stream->num_packets_sent = 0; 3533 } 3534 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3535 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3536 if (big != NULL){ 3537 big->num_completed_timestamp_current_valid = true; 3538 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3539 } 3540 } 3541 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3542 num_packets, handle, iso_stream->num_packets_sent); 3543 notify_iso = true; 3544 } 3545 } 3546 #endif 3547 } 3548 3549 #ifdef ENABLE_CLASSIC 3550 if (notify_sco){ 3551 hci_notify_if_sco_can_send_now(); 3552 } 3553 #endif 3554 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3555 if (notify_iso){ 3556 hci_iso_notify_can_send_now(); 3557 } 3558 #endif 3559 break; 3560 } 3561 3562 #ifdef ENABLE_CLASSIC 3563 case HCI_EVENT_FLUSH_OCCURRED: 3564 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3565 handle = hci_event_flush_occurred_get_handle(packet); 3566 conn = hci_connection_for_handle(handle); 3567 if (conn) { 3568 log_info("Flush occurred, disconnect 0x%04x", handle); 3569 conn->state = SEND_DISCONNECT; 3570 } 3571 break; 3572 3573 case HCI_EVENT_INQUIRY_COMPLETE: 3574 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3575 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3576 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3577 hci_emit_event(event, sizeof(event), 1); 3578 } 3579 break; 3580 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3581 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3582 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3583 } 3584 break; 3585 case HCI_EVENT_CONNECTION_REQUEST: 3586 reverse_bd_addr(&packet[2], addr); 3587 link_type = (hci_link_type_t) packet[11]; 3588 3589 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3590 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3591 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3592 bd_addr_copy(hci_stack->decline_addr, addr); 3593 break; 3594 } 3595 3596 if (hci_stack->gap_classic_accept_callback != NULL){ 3597 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3598 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3599 bd_addr_copy(hci_stack->decline_addr, addr); 3600 break; 3601 } 3602 } 3603 3604 // TODO: eval COD 8-10 3605 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3606 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3607 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3608 if (!conn) { 3609 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3610 } 3611 if (!conn) { 3612 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3613 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3614 bd_addr_copy(hci_stack->decline_addr, addr); 3615 hci_run(); 3616 // avoid event to higher layer 3617 return; 3618 } 3619 conn->state = RECEIVED_CONNECTION_REQUEST; 3620 // store info about eSCO 3621 if (link_type == HCI_LINK_TYPE_ESCO){ 3622 conn->remote_supported_features[0] |= 1; 3623 } 3624 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3625 if (addr_type == BD_ADDR_TYPE_SCO){ 3626 hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3627 btstack_assert(acl_conn != NULL); 3628 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3629 } 3630 hci_run(); 3631 break; 3632 3633 case HCI_EVENT_CONNECTION_COMPLETE: 3634 // Connection management 3635 reverse_bd_addr(&packet[5], addr); 3636 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3637 addr_type = BD_ADDR_TYPE_ACL; 3638 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3639 if (conn) { 3640 switch (conn->state){ 3641 // expected states 3642 case ACCEPTED_CONNECTION_REQUEST: 3643 case SENT_CREATE_CONNECTION: 3644 break; 3645 // unexpected state -> ignore 3646 default: 3647 // don't forward event to app 3648 return; 3649 } 3650 if (!packet[2]){ 3651 conn->state = OPEN; 3652 conn->con_handle = little_endian_read_16(packet, 3); 3653 3654 // trigger write supervision timeout if we're master 3655 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3656 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3657 } 3658 3659 // trigger write automatic flush timeout 3660 if (hci_stack->automatic_flush_timeout != 0){ 3661 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3662 } 3663 3664 // restart timer 3665 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3666 btstack_run_loop_add_timer(&conn->timeout); 3667 3668 // trigger remote features for dedicated bonding 3669 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3670 hci_trigger_remote_features_for_connection(conn); 3671 } 3672 3673 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3674 3675 hci_emit_nr_connections_changed(); 3676 } else { 3677 // connection failed 3678 hci_handle_connection_failed(conn, packet[2]); 3679 } 3680 } 3681 break; 3682 3683 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3684 reverse_bd_addr(&packet[5], addr); 3685 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3686 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3687 btstack_assert(conn != NULL); 3688 3689 if (packet[2] != ERROR_CODE_SUCCESS){ 3690 // connection failed, remove entry 3691 hci_handle_connection_failed(conn, packet[2]); 3692 break; 3693 } 3694 3695 conn->state = OPEN; 3696 conn->con_handle = little_endian_read_16(packet, 3); 3697 3698 // update sco payload length for eSCO connections 3699 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3700 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3701 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3702 } 3703 3704 #ifdef ENABLE_SCO_OVER_HCI 3705 // update SCO 3706 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3707 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3708 } 3709 // trigger can send now 3710 if (hci_have_usb_transport()){ 3711 hci_stack->sco_can_send_now = true; 3712 } 3713 #endif 3714 #ifdef HAVE_SCO_TRANSPORT 3715 // configure sco transport 3716 if (hci_stack->sco_transport != NULL){ 3717 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3718 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3719 } 3720 #endif 3721 break; 3722 3723 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3724 handle = little_endian_read_16(packet, 3); 3725 conn = hci_connection_for_handle(handle); 3726 if (!conn) break; 3727 if (!packet[2]){ 3728 const uint8_t * features = &packet[5]; 3729 hci_handle_remote_features_page_0(conn, features); 3730 3731 // read extended features if possible 3732 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3733 && ((conn->remote_supported_features[0] & 2) != 0)) { 3734 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3735 break; 3736 } 3737 } 3738 hci_handle_remote_features_received(conn); 3739 break; 3740 3741 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3742 handle = little_endian_read_16(packet, 3); 3743 conn = hci_connection_for_handle(handle); 3744 if (!conn) break; 3745 // status = ok, page = 1 3746 if (!packet[2]) { 3747 uint8_t page_number = packet[5]; 3748 uint8_t maximum_page_number = packet[6]; 3749 const uint8_t * features = &packet[7]; 3750 bool done = false; 3751 switch (page_number){ 3752 case 1: 3753 hci_handle_remote_features_page_1(conn, features); 3754 if (maximum_page_number >= 2){ 3755 // get Secure Connections (Controller) from Page 2 if available 3756 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3757 } else { 3758 // otherwise, assume SC (Controller) == SC (Host) 3759 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3760 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3761 } 3762 done = true; 3763 } 3764 break; 3765 case 2: 3766 hci_handle_remote_features_page_2(conn, features); 3767 done = true; 3768 break; 3769 default: 3770 break; 3771 } 3772 if (!done) break; 3773 } 3774 hci_handle_remote_features_received(conn); 3775 break; 3776 3777 case HCI_EVENT_LINK_KEY_REQUEST: 3778 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3779 hci_event_link_key_request_get_bd_addr(packet, addr); 3780 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3781 if (!conn) break; 3782 3783 // lookup link key in db if not cached 3784 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3785 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3786 } 3787 3788 // response sent by hci_run() 3789 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3790 #endif 3791 break; 3792 3793 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3794 hci_event_link_key_request_get_bd_addr(packet, addr); 3795 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3796 if (!conn) break; 3797 3798 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3799 3800 // CVE-2020-26555: ignore NULL link key 3801 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3802 if (btstack_is_null(&packet[8], 16)) break; 3803 3804 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3805 // Change Connection Encryption keeps link key type 3806 if (link_key_type != CHANGED_COMBINATION_KEY){ 3807 conn->link_key_type = link_key_type; 3808 } 3809 3810 // cache link key. link keys stored in little-endian format for legacy reasons 3811 memcpy(&conn->link_key, &packet[8], 16); 3812 3813 // only store link key: 3814 // - if bondable enabled 3815 if (hci_stack->bondable == false) break; 3816 // - if security level sufficient 3817 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3818 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3819 break; 3820 } 3821 3822 case HCI_EVENT_PIN_CODE_REQUEST: 3823 hci_event_pin_code_request_get_bd_addr(packet, addr); 3824 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3825 if (!conn) break; 3826 3827 hci_pairing_started(conn, false); 3828 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3829 if (!hci_stack->bondable ){ 3830 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3831 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3832 hci_run(); 3833 return; 3834 } 3835 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3836 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3837 log_info("Level 4 required, but SC not supported -> abort"); 3838 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3839 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3840 hci_run(); 3841 return; 3842 } 3843 break; 3844 3845 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3846 hci_event_io_capability_response_get_bd_addr(packet, addr); 3847 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3848 if (!conn) break; 3849 3850 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3851 hci_pairing_started(conn, true); 3852 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3853 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3854 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3855 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3856 #endif 3857 break; 3858 3859 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3860 hci_event_io_capability_response_get_bd_addr(packet, addr); 3861 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3862 if (!conn) break; 3863 3864 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3865 hci_connection_timestamp(conn); 3866 hci_pairing_started(conn, true); 3867 break; 3868 3869 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3870 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3871 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3872 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3873 if (!conn) break; 3874 3875 hci_connection_timestamp(conn); 3876 3877 hci_pairing_started(conn, true); 3878 3879 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3880 break; 3881 #endif 3882 3883 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3884 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3885 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3886 if (!conn) break; 3887 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3888 if (hci_stack->ssp_auto_accept){ 3889 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3890 }; 3891 } else { 3892 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3893 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3894 // don't forward event to app 3895 hci_run(); 3896 return; 3897 } 3898 break; 3899 3900 case HCI_EVENT_USER_PASSKEY_REQUEST: 3901 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3902 if (hci_stack->ssp_auto_accept){ 3903 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3904 }; 3905 break; 3906 3907 case HCI_EVENT_MODE_CHANGE: 3908 handle = hci_event_mode_change_get_handle(packet); 3909 conn = hci_connection_for_handle(handle); 3910 if (!conn) break; 3911 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3912 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3913 break; 3914 #endif 3915 3916 case HCI_EVENT_ENCRYPTION_CHANGE: 3917 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3918 handle = hci_event_encryption_change_get_connection_handle(packet); 3919 conn = hci_connection_for_handle(handle); 3920 if (!conn) break; 3921 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 3922 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3923 if (encryption_enabled){ 3924 if (hci_is_le_connection(conn)){ 3925 // For LE, we accept connection as encrypted 3926 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3927 } 3928 #ifdef ENABLE_CLASSIC 3929 else { 3930 3931 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3932 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3933 bool connected_uses_aes_ccm = encryption_enabled == 2; 3934 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3935 #ifdef ENABLE_TESTING_SUPPORT 3936 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 3937 // - GAP/SEC/SEM/BI-31-C 3938 // - GAP/SEC/SEM/BI-32-C 3939 // - GAP/SEC/SEM/BI-33-C 3940 3941 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 3942 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 3943 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 3944 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 3945 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 3946 } 3947 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 3948 conn->link_key_type, new_link_key_type); 3949 conn->link_key_type = new_link_key_type; 3950 #else 3951 log_info("SC during pairing, but only E0 now -> abort"); 3952 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3953 break; 3954 #endif 3955 } 3956 3957 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3958 if (connected_uses_aes_ccm){ 3959 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3960 } 3961 3962 #ifdef ENABLE_TESTING_SUPPORT 3963 // work around for issue with PTS dongle 3964 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3965 #endif 3966 // validate encryption key size 3967 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3968 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3969 // already got encryption key size 3970 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3971 } else { 3972 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3973 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3974 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3975 } else { 3976 // if not, pretend everything is perfect 3977 hci_handle_read_encryption_key_size_complete(conn, 16); 3978 } 3979 } 3980 } 3981 #endif 3982 } else { 3983 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3984 } 3985 } else { 3986 #ifdef ENABLE_CLASSIC 3987 if (!hci_is_le_connection(conn)){ 3988 uint8_t status = hci_event_encryption_change_get_status(packet); 3989 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3990 conn->bonding_flags &= ~BONDING_DEDICATED; 3991 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3992 conn->bonding_status = status; 3993 } 3994 // trigger security update -> level 0 3995 hci_handle_mutual_authentication_completed(conn); 3996 } 3997 #endif 3998 } 3999 4000 break; 4001 4002 #ifdef ENABLE_CLASSIC 4003 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4004 handle = hci_event_authentication_complete_get_connection_handle(packet); 4005 conn = hci_connection_for_handle(handle); 4006 if (!conn) break; 4007 4008 // clear authentication active flag 4009 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4010 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4011 4012 // authenticated only if auth status == 0 4013 if (hci_event_authentication_complete_get_status(packet) == 0){ 4014 // authenticated 4015 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4016 4017 // If not already encrypted, start encryption 4018 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4019 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4020 break; 4021 } 4022 } 4023 4024 // emit updated security level (will be 0 if not authenticated) 4025 hci_handle_mutual_authentication_completed(conn); 4026 break; 4027 4028 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4029 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4030 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4031 if (!conn) break; 4032 4033 // treat successfully paired connection as authenticated 4034 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4035 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4036 } 4037 4038 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4039 break; 4040 #endif 4041 4042 // HCI_EVENT_DISCONNECTION_COMPLETE 4043 // has been split, to first notify stack before shutting connection down 4044 // see end of function, too. 4045 case HCI_EVENT_DISCONNECTION_COMPLETE: 4046 if (packet[2]) break; // status != 0 4047 handle = little_endian_read_16(packet, 3); 4048 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4049 if (hci_stack->acl_fragmentation_total_size > 0u) { 4050 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4051 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4052 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4053 hci_stack->acl_fragmentation_total_size = 0; 4054 hci_stack->acl_fragmentation_pos = 0; 4055 if (release_buffer){ 4056 hci_release_packet_buffer(); 4057 } 4058 } 4059 } 4060 4061 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4062 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4063 if (hci_stack->iso_fragmentation_total_size > 0u) { 4064 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4065 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4066 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4067 hci_stack->iso_fragmentation_total_size = 0; 4068 hci_stack->iso_fragmentation_pos = 0; 4069 if (release_buffer){ 4070 hci_release_packet_buffer(); 4071 } 4072 } 4073 } 4074 4075 // finalize iso stream for CIS handle 4076 iso_stream = hci_iso_stream_for_con_handle(handle); 4077 if (iso_stream != NULL){ 4078 hci_iso_stream_finalize(iso_stream); 4079 break; 4080 } 4081 4082 // finalize iso stream(s) for ACL handle 4083 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4084 while (btstack_linked_list_iterator_has_next(&it)){ 4085 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4086 if (iso_stream->acl_handle == handle ) { 4087 hci_iso_stream_finalize(iso_stream); 4088 } 4089 } 4090 #endif 4091 4092 conn = hci_connection_for_handle(handle); 4093 if (!conn) break; 4094 #ifdef ENABLE_CLASSIC 4095 // pairing failed if it was ongoing 4096 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4097 #endif 4098 4099 // emit dedicatd bonding event 4100 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4101 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4102 } 4103 4104 // mark connection for shutdown, stop timers, reset state 4105 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4106 hci_connection_stop_timer(conn); 4107 hci_connection_init(conn); 4108 4109 #ifdef ENABLE_BLE 4110 #ifdef ENABLE_LE_PERIPHERAL 4111 // re-enable advertisements for le connections if active 4112 if (hci_is_le_connection(conn)){ 4113 hci_update_advertisements_enabled_for_current_roles(); 4114 } 4115 #endif 4116 #endif 4117 break; 4118 4119 case HCI_EVENT_HARDWARE_ERROR: 4120 log_error("Hardware Error: 0x%02x", packet[2]); 4121 if (hci_stack->hardware_error_callback){ 4122 (*hci_stack->hardware_error_callback)(packet[2]); 4123 } else { 4124 // if no special requests, just reboot stack 4125 hci_power_control_off(); 4126 hci_power_control_on(); 4127 } 4128 break; 4129 4130 #ifdef ENABLE_CLASSIC 4131 case HCI_EVENT_ROLE_CHANGE: 4132 if (packet[2]) break; // status != 0 4133 reverse_bd_addr(&packet[3], addr); 4134 addr_type = BD_ADDR_TYPE_ACL; 4135 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4136 if (!conn) break; 4137 conn->role = (hci_role_t) packet[9]; 4138 break; 4139 #endif 4140 4141 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4142 // release packet buffer only for asynchronous transport and if there are not further fragments 4143 if (hci_transport_synchronous()) { 4144 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4145 return; // instead of break: to avoid re-entering hci_run() 4146 } 4147 hci_stack->acl_fragmentation_tx_active = 0; 4148 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4149 hci_stack->iso_fragmentation_tx_active = 0; 4150 if (hci_stack->iso_fragmentation_total_size) break; 4151 #endif 4152 if (hci_stack->acl_fragmentation_total_size) break; 4153 hci_release_packet_buffer(); 4154 4155 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4156 hci_iso_notify_can_send_now(); 4157 #endif 4158 // L2CAP receives this event via the hci_emit_event below 4159 4160 #ifdef ENABLE_CLASSIC 4161 // For SCO, we do the can_send_now_check here 4162 hci_notify_if_sco_can_send_now(); 4163 #endif 4164 break; 4165 4166 #ifdef ENABLE_CLASSIC 4167 case HCI_EVENT_SCO_CAN_SEND_NOW: 4168 // For SCO, we do the can_send_now_check here 4169 hci_stack->sco_can_send_now = true; 4170 hci_notify_if_sco_can_send_now(); 4171 return; 4172 4173 // explode inquriy results for easier consumption 4174 case HCI_EVENT_INQUIRY_RESULT: 4175 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4176 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4177 gap_inquiry_explode(packet, size); 4178 break; 4179 #endif 4180 4181 #ifdef ENABLE_BLE 4182 case HCI_EVENT_LE_META: 4183 switch (packet[2]){ 4184 #ifdef ENABLE_LE_CENTRAL 4185 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4186 if (!hci_stack->le_scanning_enabled) break; 4187 le_handle_advertisement_report(packet, size); 4188 break; 4189 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4190 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4191 if (!hci_stack->le_scanning_enabled) break; 4192 le_handle_extended_advertisement_report(packet, size); 4193 break; 4194 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4195 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4196 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4197 break; 4198 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4199 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4200 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4201 while (btstack_linked_list_iterator_has_next(&it)) { 4202 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4203 if (advertising_set->advertising_handle == advertising_handle){ 4204 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4205 } 4206 } 4207 break; 4208 #endif 4209 #endif 4210 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4211 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4212 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4213 event_handle_le_connection_complete(packet); 4214 break; 4215 4216 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4217 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4218 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4219 conn = hci_connection_for_handle(handle); 4220 if (!conn) break; 4221 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4222 break; 4223 4224 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4225 // connection 4226 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4227 conn = hci_connection_for_handle(handle); 4228 if (conn) { 4229 // read arguments 4230 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4231 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4232 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4233 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4234 4235 // validate against current connection parameter range 4236 le_connection_parameter_range_t existing_range; 4237 gap_get_connection_parameter_range(&existing_range); 4238 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4239 if (update_parameter){ 4240 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4241 conn->le_conn_interval_min = le_conn_interval_min; 4242 conn->le_conn_interval_max = le_conn_interval_max; 4243 conn->le_conn_latency = le_conn_latency; 4244 conn->le_supervision_timeout = le_supervision_timeout; 4245 } else { 4246 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4247 } 4248 } 4249 break; 4250 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4251 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4252 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4253 conn = hci_connection_for_handle(handle); 4254 if (conn) { 4255 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4256 } 4257 break; 4258 #endif 4259 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4260 case HCI_SUBEVENT_LE_CIS_REQUEST: 4261 // incoming CIS request, allocate iso stream object and cache metadata 4262 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4263 hci_subevent_le_cis_request_get_cig_id(packet), 4264 hci_subevent_le_cis_request_get_cis_id(packet)); 4265 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4266 if (iso_stream != NULL){ 4267 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4268 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4269 } 4270 break; 4271 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4272 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4273 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4274 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4275 iso_stream = hci_iso_stream_for_con_handle(handle); 4276 btstack_assert(iso_stream != NULL); 4277 // track SDU 4278 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4279 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4280 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4281 // CIS Accept by Peripheral 4282 if (status == ERROR_CODE_SUCCESS){ 4283 if (iso_stream->max_sdu_p_to_c > 0){ 4284 // we're peripheral and we will send data 4285 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4286 } else { 4287 // we're peripheral and we will only receive data 4288 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4289 } 4290 } else { 4291 hci_cis_handle_created(iso_stream, status); 4292 } 4293 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4294 } else { 4295 // CIG Setup by Central 4296 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4297 btstack_assert(cig != NULL); 4298 // update iso stream state 4299 if (status == ERROR_CODE_SUCCESS){ 4300 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4301 } else { 4302 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4303 } 4304 // update cig state 4305 uint8_t i; 4306 for (i=0;i<cig->num_cis;i++){ 4307 if (cig->cis_con_handles[i] == handle){ 4308 cig->cis_setup_active[i] = false; 4309 if (status == ERROR_CODE_SUCCESS){ 4310 cig->cis_established[i] = true; 4311 } else { 4312 hci_cis_handle_created(iso_stream, status); 4313 } 4314 } 4315 } 4316 4317 // trigger iso path setup if complete 4318 bool cis_setup_active = false; 4319 for (i=0;i<cig->num_cis;i++){ 4320 cis_setup_active |= cig->cis_setup_active[i]; 4321 } 4322 if (cis_setup_active == false){ 4323 cig->state_vars.next_cis = 0; 4324 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4325 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4326 } 4327 } 4328 } 4329 break; 4330 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4331 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4332 big = hci_big_for_handle(packet[4]); 4333 if (big != NULL){ 4334 uint8_t status = packet[3]; 4335 if (status == ERROR_CODE_SUCCESS){ 4336 // store bis_con_handles and trigger iso path setup 4337 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4338 uint8_t i; 4339 for (i=0;i<num_bis;i++){ 4340 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4341 big->bis_con_handles[i] = bis_handle; 4342 // assign bis handle 4343 btstack_linked_list_iterator_t it; 4344 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4345 while (btstack_linked_list_iterator_has_next(&it)){ 4346 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4347 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4348 (iso_stream->group_id == big->big_handle)){ 4349 iso_stream->cis_handle = bis_handle; 4350 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4351 break; 4352 } 4353 } 4354 } 4355 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4356 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4357 big->state_vars.next_bis = 0; 4358 } 4359 } else { 4360 // create BIG failed or has been stopped by us 4361 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4362 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4363 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4364 hci_emit_big_created(big, status); 4365 } else { 4366 hci_emit_big_terminated(big); 4367 } 4368 } 4369 } 4370 break; 4371 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4372 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4373 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4374 if (big != NULL){ 4375 // finalize associated ISO streams 4376 btstack_linked_list_iterator_t it; 4377 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4378 while (btstack_linked_list_iterator_has_next(&it)){ 4379 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4380 if (iso_stream->group_id == big->big_handle){ 4381 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4382 btstack_linked_list_iterator_remove(&it); 4383 btstack_memory_hci_iso_stream_free(iso_stream); 4384 } 4385 } 4386 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4387 switch (big->state){ 4388 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4389 hci_emit_big_created(big, big->state_vars.status); 4390 break; 4391 default: 4392 hci_emit_big_terminated(big); 4393 break; 4394 } 4395 } 4396 break; 4397 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4398 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4399 big_sync = hci_big_sync_for_handle(packet[4]); 4400 if (big_sync != NULL){ 4401 uint8_t status = packet[3]; 4402 uint8_t big_handle = packet[4]; 4403 if (status == ERROR_CODE_SUCCESS){ 4404 // store bis_con_handles and trigger iso path setup 4405 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4406 uint8_t i; 4407 for (i=0;i<num_bis;i++){ 4408 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4409 } 4410 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4411 // trigger iso path setup 4412 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4413 big_sync->state_vars.next_bis = 0; 4414 } 4415 } else { 4416 // create BIG Sync failed or has been stopped by us 4417 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4418 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4419 hci_emit_big_sync_created(big_sync, status); 4420 } else { 4421 hci_emit_big_sync_stopped(big_handle); 4422 } 4423 } 4424 } 4425 break; 4426 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4427 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4428 big_sync = hci_big_sync_for_handle(packet[4]); 4429 if (big_sync != NULL){ 4430 uint8_t big_handle = packet[4]; 4431 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4432 hci_emit_big_sync_stopped(big_handle); 4433 } 4434 break; 4435 #endif 4436 default: 4437 break; 4438 } 4439 break; 4440 #endif 4441 case HCI_EVENT_VENDOR_SPECIFIC: 4442 // Vendor specific commands often create vendor specific event instead of num completed packets 4443 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4444 switch (hci_stack->manufacturer){ 4445 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4446 hci_stack->num_cmd_packets = 1; 4447 break; 4448 default: 4449 break; 4450 } 4451 break; 4452 default: 4453 break; 4454 } 4455 4456 handle_event_for_current_stack_state(packet, size); 4457 4458 // notify upper stack 4459 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4460 4461 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4462 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4463 handle = little_endian_read_16(packet, 3); 4464 hci_connection_t * aConn = hci_connection_for_handle(handle); 4465 // discard connection if app did not trigger a reconnect in the event handler 4466 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4467 hci_shutdown_connection(aConn); 4468 } 4469 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4470 hci_controller_dump_packets(); 4471 #endif 4472 } 4473 4474 // execute main loop 4475 hci_run(); 4476 } 4477 4478 #ifdef ENABLE_CLASSIC 4479 4480 #ifdef ENABLE_SCO_OVER_HCI 4481 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4482 static void sco_schedule_tx(hci_connection_t * conn); 4483 4484 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4485 log_debug("SCO TX Timeout"); 4486 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4487 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4488 if (!conn) return; 4489 4490 // trigger send 4491 conn->sco_tx_ready = 1; 4492 // extra packet if CVSD but SCO buffer is too short 4493 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4494 conn->sco_tx_ready++; 4495 } 4496 hci_notify_if_sco_can_send_now(); 4497 } 4498 4499 4500 #define SCO_TX_AFTER_RX_MS (6) 4501 4502 static void sco_schedule_tx(hci_connection_t * conn){ 4503 4504 uint32_t now = btstack_run_loop_get_time_ms(); 4505 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4506 int time_delta_ms = sco_tx_ms - now; 4507 4508 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4509 4510 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4511 btstack_run_loop_remove_timer(timer); 4512 btstack_run_loop_set_timer(timer, time_delta_ms); 4513 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4514 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4515 btstack_run_loop_add_timer(timer); 4516 } 4517 #endif 4518 4519 static void sco_handler(uint8_t * packet, uint16_t size){ 4520 // lookup connection struct 4521 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4522 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4523 if (!conn) return; 4524 4525 #ifdef ENABLE_SCO_OVER_HCI 4526 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4527 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4528 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4529 packet[2] = 0x3c; 4530 memmove(&packet[3], &packet[23], 63); 4531 size = 63; 4532 } 4533 } 4534 4535 if (hci_have_usb_transport()){ 4536 // Nothing to do 4537 } else { 4538 // 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); 4539 if (hci_stack->synchronous_flow_control_enabled == 0){ 4540 uint32_t now = btstack_run_loop_get_time_ms(); 4541 4542 if (!conn->sco_rx_valid){ 4543 // ignore first 10 packets 4544 conn->sco_rx_count++; 4545 // log_debug("sco rx count %u", conn->sco_rx_count); 4546 if (conn->sco_rx_count == 10) { 4547 // use first timestamp as is and pretent it just started 4548 conn->sco_rx_ms = now; 4549 conn->sco_rx_valid = 1; 4550 conn->sco_rx_count = 0; 4551 sco_schedule_tx(conn); 4552 } 4553 } else { 4554 // track expected arrival timme 4555 conn->sco_rx_count++; 4556 conn->sco_rx_ms += 7; 4557 int delta = (int32_t) (now - conn->sco_rx_ms); 4558 if (delta > 0){ 4559 conn->sco_rx_ms++; 4560 } 4561 // log_debug("sco rx %u", conn->sco_rx_ms); 4562 sco_schedule_tx(conn); 4563 } 4564 } 4565 } 4566 #endif 4567 4568 // deliver to app 4569 if (hci_stack->sco_packet_handler) { 4570 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4571 } 4572 4573 #ifdef HAVE_SCO_TRANSPORT 4574 // We can send one packet for each received packet 4575 conn->sco_tx_ready++; 4576 hci_notify_if_sco_can_send_now(); 4577 #endif 4578 4579 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4580 conn->num_packets_completed++; 4581 hci_stack->host_completed_packets = 1; 4582 hci_run(); 4583 #endif 4584 } 4585 #endif 4586 4587 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4588 hci_dump_packet(packet_type, 1, packet, size); 4589 switch (packet_type) { 4590 case HCI_EVENT_PACKET: 4591 event_handler(packet, size); 4592 break; 4593 case HCI_ACL_DATA_PACKET: 4594 acl_handler(packet, size); 4595 break; 4596 #ifdef ENABLE_CLASSIC 4597 case HCI_SCO_DATA_PACKET: 4598 sco_handler(packet, size); 4599 break; 4600 #endif 4601 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4602 case HCI_ISO_DATA_PACKET: 4603 hci_iso_packet_handler(packet, size); 4604 break; 4605 #endif 4606 default: 4607 break; 4608 } 4609 } 4610 4611 /** 4612 * @brief Add event packet handler. 4613 */ 4614 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4615 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4616 } 4617 4618 /** 4619 * @brief Remove event packet handler. 4620 */ 4621 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4622 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4623 } 4624 4625 /** Register HCI packet handlers */ 4626 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4627 hci_stack->acl_packet_handler = handler; 4628 } 4629 4630 #ifdef ENABLE_CLASSIC 4631 /** 4632 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4633 */ 4634 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4635 hci_stack->sco_packet_handler = handler; 4636 } 4637 #endif 4638 4639 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4640 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4641 hci_stack->iso_packet_handler = handler; 4642 } 4643 #endif 4644 4645 static void hci_state_reset(void){ 4646 // no connections yet 4647 hci_stack->connections = NULL; 4648 4649 // keep discoverable/connectable as this has been requested by the client(s) 4650 // hci_stack->discoverable = 0; 4651 // hci_stack->connectable = 0; 4652 // hci_stack->bondable = 1; 4653 // hci_stack->own_addr_type = 0; 4654 4655 // buffer is free 4656 hci_stack->hci_packet_buffer_reserved = false; 4657 4658 // no pending cmds 4659 hci_stack->decline_reason = 0; 4660 4661 hci_stack->secure_connections_active = false; 4662 4663 #ifdef ENABLE_CLASSIC 4664 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4665 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4666 4667 hci_stack->gap_tasks_classic = 4668 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4669 GAP_TASK_SET_CLASS_OF_DEVICE | 4670 GAP_TASK_SET_LOCAL_NAME | 4671 GAP_TASK_SET_EIR_DATA | 4672 GAP_TASK_WRITE_SCAN_ENABLE | 4673 GAP_TASK_WRITE_PAGE_TIMEOUT; 4674 #endif 4675 4676 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4677 hci_stack->classic_read_local_oob_data = false; 4678 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4679 #endif 4680 4681 // LE 4682 #ifdef ENABLE_BLE 4683 memset(hci_stack->le_random_address, 0, 6); 4684 hci_stack->le_random_address_set = 0; 4685 #endif 4686 #ifdef ENABLE_LE_CENTRAL 4687 hci_stack->le_scanning_active = false; 4688 hci_stack->le_scanning_param_update = true; 4689 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4690 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4691 hci_stack->le_whitelist_capacity = 0; 4692 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4693 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4694 #endif 4695 #endif 4696 #ifdef ENABLE_LE_PERIPHERAL 4697 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4698 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4699 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4700 } 4701 if (hci_stack->le_advertisements_data != NULL){ 4702 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4703 } 4704 #endif 4705 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4706 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4707 #endif 4708 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4709 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4710 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4711 #endif 4712 } 4713 4714 #ifdef ENABLE_CLASSIC 4715 /** 4716 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4717 */ 4718 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4719 // store and open remote device db 4720 hci_stack->link_key_db = link_key_db; 4721 if (hci_stack->link_key_db) { 4722 hci_stack->link_key_db->open(); 4723 } 4724 } 4725 #endif 4726 4727 void hci_init(const hci_transport_t *transport, const void *config){ 4728 4729 #ifdef HAVE_MALLOC 4730 if (!hci_stack) { 4731 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4732 } 4733 #else 4734 hci_stack = &hci_stack_static; 4735 #endif 4736 memset(hci_stack, 0, sizeof(hci_stack_t)); 4737 4738 // reference to use transport layer implementation 4739 hci_stack->hci_transport = transport; 4740 4741 // reference to used config 4742 hci_stack->config = config; 4743 4744 // setup pointer for outgoing packet buffer 4745 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4746 4747 // max acl payload size defined in config.h 4748 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4749 4750 // register packet handlers with transport 4751 transport->register_packet_handler(&packet_handler); 4752 4753 hci_stack->state = HCI_STATE_OFF; 4754 4755 // class of device 4756 hci_stack->class_of_device = 0x007a020c; // Smartphone 4757 4758 // bondable by default 4759 hci_stack->bondable = 1; 4760 4761 #ifdef ENABLE_CLASSIC 4762 // classic name 4763 hci_stack->local_name = default_classic_name; 4764 4765 // Master slave policy 4766 hci_stack->master_slave_policy = 1; 4767 4768 // Allow Role Switch 4769 hci_stack->allow_role_switch = 1; 4770 4771 // Default / minimum security level = 2 4772 hci_stack->gap_security_level = LEVEL_2; 4773 4774 // Default Security Mode 4 4775 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4776 4777 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4778 hci_stack->gap_required_encyrption_key_size = 7; 4779 4780 // Link Supervision Timeout 4781 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4782 4783 #endif 4784 4785 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4786 hci_stack->ssp_enable = 1; 4787 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4788 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4789 hci_stack->ssp_auto_accept = 1; 4790 4791 // Secure Connections: enable (requires support from Controller) 4792 hci_stack->secure_connections_enable = true; 4793 4794 // voice setting - signed 16 bit pcm data with CVSD over the air 4795 hci_stack->sco_voice_setting = 0x60; 4796 4797 #ifdef ENABLE_BLE 4798 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4799 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4800 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4801 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4802 hci_stack->le_connection_latency = 4; // 4 4803 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4804 hci_stack->le_minimum_ce_length = 0; // 0 ms 4805 hci_stack->le_maximum_ce_length = 0; // 0 ms 4806 #endif 4807 4808 #ifdef ENABLE_LE_CENTRAL 4809 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4810 4811 // default LE Scanning 4812 hci_stack->le_scan_type = 0x01; // active 4813 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4814 hci_stack->le_scan_window = 0x30; // 30 ms 4815 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4816 #endif 4817 4818 #ifdef ENABLE_LE_PERIPHERAL 4819 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4820 4821 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4822 hci_stack->le_advertisements_interval_min = 0x0800; 4823 hci_stack->le_advertisements_interval_max = 0x0800; 4824 hci_stack->le_advertisements_type = 0; 4825 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4826 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4827 hci_stack->le_advertisements_channel_map = 0x07; 4828 hci_stack->le_advertisements_filter_policy = 0; 4829 #endif 4830 4831 // connection parameter range used to answer connection parameter update requests in l2cap 4832 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4833 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4834 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4835 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4836 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4837 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4838 4839 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4840 hci_stack->iso_packets_to_queue = 1; 4841 #endif 4842 4843 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4844 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4845 #endif 4846 4847 hci_state_reset(); 4848 } 4849 4850 void hci_deinit(void){ 4851 btstack_run_loop_remove_timer(&hci_stack->timeout); 4852 #ifdef HAVE_MALLOC 4853 if (hci_stack) { 4854 free(hci_stack); 4855 } 4856 #endif 4857 hci_stack = NULL; 4858 4859 #ifdef ENABLE_CLASSIC 4860 disable_l2cap_timeouts = 0; 4861 #endif 4862 } 4863 4864 /** 4865 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4866 */ 4867 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4868 hci_stack->chipset = chipset_driver; 4869 4870 // reset chipset driver - init is also called on power_up 4871 if (hci_stack->chipset && hci_stack->chipset->init){ 4872 hci_stack->chipset->init(hci_stack->config); 4873 } 4874 } 4875 4876 void hci_enable_custom_pre_init(void){ 4877 hci_stack->chipset_pre_init = true; 4878 } 4879 4880 /** 4881 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4882 */ 4883 void hci_set_control(const btstack_control_t *hardware_control){ 4884 // references to used control implementation 4885 hci_stack->control = hardware_control; 4886 // init with transport config 4887 hardware_control->init(hci_stack->config); 4888 } 4889 4890 static void hci_discard_connections(void){ 4891 btstack_linked_list_iterator_t it; 4892 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4893 while (btstack_linked_list_iterator_has_next(&it)){ 4894 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4895 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4896 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4897 hci_shutdown_connection(connection); 4898 } 4899 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4900 while (hci_stack->iso_streams != NULL){ 4901 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4902 } 4903 #endif 4904 } 4905 4906 void hci_close(void){ 4907 4908 #ifdef ENABLE_CLASSIC 4909 // close remote device db 4910 if (hci_stack->link_key_db) { 4911 hci_stack->link_key_db->close(); 4912 } 4913 #endif 4914 4915 hci_discard_connections(); 4916 4917 hci_power_control(HCI_POWER_OFF); 4918 4919 #ifdef HAVE_MALLOC 4920 free(hci_stack); 4921 #endif 4922 hci_stack = NULL; 4923 } 4924 4925 #ifdef HAVE_SCO_TRANSPORT 4926 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4927 hci_stack->sco_transport = sco_transport; 4928 sco_transport->register_packet_handler(&packet_handler); 4929 } 4930 #endif 4931 4932 #ifdef ENABLE_CLASSIC 4933 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4934 // validate ranage and set 4935 if (encryption_key_size < 7) return; 4936 if (encryption_key_size > 16) return; 4937 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4938 } 4939 4940 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4941 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4942 hci_stack->gap_security_mode = security_mode; 4943 return ERROR_CODE_SUCCESS; 4944 } else { 4945 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4946 } 4947 } 4948 4949 gap_security_mode_t gap_get_security_mode(void){ 4950 return hci_stack->gap_security_mode; 4951 } 4952 4953 void gap_set_security_level(gap_security_level_t security_level){ 4954 hci_stack->gap_security_level = security_level; 4955 } 4956 4957 gap_security_level_t gap_get_security_level(void){ 4958 if (hci_stack->gap_secure_connections_only_mode){ 4959 return LEVEL_4; 4960 } 4961 return hci_stack->gap_security_level; 4962 } 4963 4964 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4965 hci_stack->gap_minimal_service_security_level = security_level; 4966 } 4967 4968 void gap_set_secure_connections_only_mode(bool enable){ 4969 hci_stack->gap_secure_connections_only_mode = enable; 4970 } 4971 4972 bool gap_get_secure_connections_only_mode(void){ 4973 return hci_stack->gap_secure_connections_only_mode; 4974 } 4975 #endif 4976 4977 #ifdef ENABLE_CLASSIC 4978 void gap_set_class_of_device(uint32_t class_of_device){ 4979 hci_stack->class_of_device = class_of_device; 4980 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4981 hci_run(); 4982 } 4983 4984 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4985 hci_stack->default_link_policy_settings = default_link_policy_settings; 4986 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4987 hci_run(); 4988 } 4989 4990 void gap_set_allow_role_switch(bool allow_role_switch){ 4991 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4992 } 4993 4994 uint8_t hci_get_allow_role_switch(void){ 4995 return hci_stack->allow_role_switch; 4996 } 4997 4998 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4999 hci_stack->link_supervision_timeout = link_supervision_timeout; 5000 } 5001 5002 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5003 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5004 } 5005 5006 uint16_t hci_automatic_flush_timeout(void){ 5007 return hci_stack->automatic_flush_timeout; 5008 } 5009 5010 void hci_disable_l2cap_timeout_check(void){ 5011 disable_l2cap_timeouts = 1; 5012 } 5013 #endif 5014 5015 #ifndef HAVE_HOST_CONTROLLER_API 5016 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5017 void hci_set_bd_addr(bd_addr_t addr){ 5018 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5019 hci_stack->custom_bd_addr_set = 1; 5020 } 5021 #endif 5022 5023 // State-Module-Driver overview 5024 // state module low-level 5025 // HCI_STATE_OFF off close 5026 // HCI_STATE_INITIALIZING, on open 5027 // HCI_STATE_WORKING, on open 5028 // HCI_STATE_HALTING, on open 5029 // HCI_STATE_SLEEPING, off/sleep close 5030 // HCI_STATE_FALLING_ASLEEP on open 5031 5032 static int hci_power_control_on(void){ 5033 5034 // power on 5035 int err = 0; 5036 if (hci_stack->control && hci_stack->control->on){ 5037 err = (*hci_stack->control->on)(); 5038 } 5039 if (err){ 5040 log_error( "POWER_ON failed"); 5041 hci_emit_hci_open_failed(); 5042 return err; 5043 } 5044 5045 // int chipset driver 5046 if (hci_stack->chipset && hci_stack->chipset->init){ 5047 hci_stack->chipset->init(hci_stack->config); 5048 } 5049 5050 // init transport 5051 if (hci_stack->hci_transport->init){ 5052 hci_stack->hci_transport->init(hci_stack->config); 5053 } 5054 5055 // open transport 5056 err = hci_stack->hci_transport->open(); 5057 if (err){ 5058 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5059 if (hci_stack->control && hci_stack->control->off){ 5060 (*hci_stack->control->off)(); 5061 } 5062 hci_emit_hci_open_failed(); 5063 return err; 5064 } 5065 return 0; 5066 } 5067 5068 static void hci_power_control_off(void){ 5069 5070 log_info("hci_power_control_off"); 5071 5072 // close low-level device 5073 hci_stack->hci_transport->close(); 5074 5075 log_info("hci_power_control_off - hci_transport closed"); 5076 5077 // power off 5078 if (hci_stack->control && hci_stack->control->off){ 5079 (*hci_stack->control->off)(); 5080 } 5081 5082 log_info("hci_power_control_off - control closed"); 5083 5084 hci_stack->state = HCI_STATE_OFF; 5085 } 5086 5087 static void hci_power_control_sleep(void){ 5088 5089 log_info("hci_power_control_sleep"); 5090 5091 #if 0 5092 // don't close serial port during sleep 5093 5094 // close low-level device 5095 hci_stack->hci_transport->close(hci_stack->config); 5096 #endif 5097 5098 // sleep mode 5099 if (hci_stack->control && hci_stack->control->sleep){ 5100 (*hci_stack->control->sleep)(); 5101 } 5102 5103 hci_stack->state = HCI_STATE_SLEEPING; 5104 } 5105 5106 static int hci_power_control_wake(void){ 5107 5108 log_info("hci_power_control_wake"); 5109 5110 // wake on 5111 if (hci_stack->control && hci_stack->control->wake){ 5112 (*hci_stack->control->wake)(); 5113 } 5114 5115 #if 0 5116 // open low-level device 5117 int err = hci_stack->hci_transport->open(hci_stack->config); 5118 if (err){ 5119 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5120 if (hci_stack->control && hci_stack->control->off){ 5121 (*hci_stack->control->off)(); 5122 } 5123 hci_emit_hci_open_failed(); 5124 return err; 5125 } 5126 #endif 5127 5128 return 0; 5129 } 5130 5131 static void hci_power_enter_initializing_state(void){ 5132 // set up state machine 5133 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5134 hci_stack->hci_packet_buffer_reserved = false; 5135 hci_stack->state = HCI_STATE_INITIALIZING; 5136 5137 #ifndef HAVE_HOST_CONTROLLER_API 5138 if (hci_stack->chipset_pre_init) { 5139 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5140 } else 5141 #endif 5142 { 5143 hci_stack->substate = HCI_INIT_SEND_RESET; 5144 } 5145 } 5146 5147 static void hci_power_enter_halting_state(void){ 5148 #ifdef ENABLE_BLE 5149 // drop entries scheduled for removal, mark others for re-adding 5150 btstack_linked_list_iterator_t it; 5151 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5152 while (btstack_linked_list_iterator_has_next(&it)){ 5153 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5154 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5155 btstack_linked_list_iterator_remove(&it); 5156 btstack_memory_whitelist_entry_free(entry); 5157 } else { 5158 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5159 } 5160 } 5161 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5162 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5163 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5164 while (btstack_linked_list_iterator_has_next(&it)){ 5165 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5166 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5167 btstack_linked_list_iterator_remove(&it); 5168 btstack_memory_periodic_advertiser_list_entry_free(entry); 5169 } else { 5170 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5171 continue; 5172 } 5173 } 5174 #endif 5175 #endif 5176 // see hci_run 5177 hci_stack->state = HCI_STATE_HALTING; 5178 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5179 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5180 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5181 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5182 btstack_run_loop_add_timer(&hci_stack->timeout); 5183 } 5184 5185 // returns error 5186 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5187 int err; 5188 switch (power_mode){ 5189 case HCI_POWER_ON: 5190 err = hci_power_control_on(); 5191 if (err != 0) { 5192 log_error("hci_power_control_on() error %d", err); 5193 return err; 5194 } 5195 hci_power_enter_initializing_state(); 5196 break; 5197 case HCI_POWER_OFF: 5198 // do nothing 5199 break; 5200 case HCI_POWER_SLEEP: 5201 // do nothing (with SLEEP == OFF) 5202 break; 5203 default: 5204 btstack_assert(false); 5205 break; 5206 } 5207 return ERROR_CODE_SUCCESS; 5208 } 5209 5210 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5211 switch (power_mode){ 5212 case HCI_POWER_ON: 5213 // do nothing 5214 break; 5215 case HCI_POWER_OFF: 5216 // no connections yet, just turn it off 5217 hci_power_control_off(); 5218 break; 5219 case HCI_POWER_SLEEP: 5220 // no connections yet, just turn it off 5221 hci_power_control_sleep(); 5222 break; 5223 default: 5224 btstack_assert(false); 5225 break; 5226 } 5227 return ERROR_CODE_SUCCESS; 5228 } 5229 5230 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5231 switch (power_mode){ 5232 case HCI_POWER_ON: 5233 // do nothing 5234 break; 5235 case HCI_POWER_OFF: 5236 hci_power_enter_halting_state(); 5237 break; 5238 case HCI_POWER_SLEEP: 5239 // see hci_run 5240 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5241 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5242 break; 5243 default: 5244 btstack_assert(false); 5245 break; 5246 } 5247 return ERROR_CODE_SUCCESS; 5248 } 5249 5250 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5251 switch (power_mode){ 5252 case HCI_POWER_ON: 5253 hci_power_enter_initializing_state(); 5254 break; 5255 case HCI_POWER_OFF: 5256 // do nothing 5257 break; 5258 case HCI_POWER_SLEEP: 5259 // see hci_run 5260 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5261 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5262 break; 5263 default: 5264 btstack_assert(false); 5265 break; 5266 } 5267 return ERROR_CODE_SUCCESS; 5268 } 5269 5270 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5271 switch (power_mode){ 5272 case HCI_POWER_ON: 5273 hci_power_enter_initializing_state(); 5274 break; 5275 case HCI_POWER_OFF: 5276 hci_power_enter_halting_state(); 5277 break; 5278 case HCI_POWER_SLEEP: 5279 // do nothing 5280 break; 5281 default: 5282 btstack_assert(false); 5283 break; 5284 } 5285 return ERROR_CODE_SUCCESS; 5286 } 5287 5288 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5289 int err; 5290 switch (power_mode){ 5291 case HCI_POWER_ON: 5292 err = hci_power_control_wake(); 5293 if (err) return err; 5294 hci_power_enter_initializing_state(); 5295 break; 5296 case HCI_POWER_OFF: 5297 hci_power_enter_halting_state(); 5298 break; 5299 case HCI_POWER_SLEEP: 5300 // do nothing 5301 break; 5302 default: 5303 btstack_assert(false); 5304 break; 5305 } 5306 return ERROR_CODE_SUCCESS; 5307 } 5308 5309 int hci_power_control(HCI_POWER_MODE power_mode){ 5310 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5311 btstack_run_loop_remove_timer(&hci_stack->timeout); 5312 int err = 0; 5313 switch (hci_stack->state){ 5314 case HCI_STATE_OFF: 5315 err = hci_power_control_state_off(power_mode); 5316 break; 5317 case HCI_STATE_INITIALIZING: 5318 err = hci_power_control_state_initializing(power_mode); 5319 break; 5320 case HCI_STATE_WORKING: 5321 err = hci_power_control_state_working(power_mode); 5322 break; 5323 case HCI_STATE_HALTING: 5324 err = hci_power_control_state_halting(power_mode); 5325 break; 5326 case HCI_STATE_FALLING_ASLEEP: 5327 err = hci_power_control_state_falling_asleep(power_mode); 5328 break; 5329 case HCI_STATE_SLEEPING: 5330 err = hci_power_control_state_sleeping(power_mode); 5331 break; 5332 default: 5333 btstack_assert(false); 5334 break; 5335 } 5336 if (err != 0){ 5337 return err; 5338 } 5339 5340 // create internal event 5341 hci_emit_state(); 5342 5343 // trigger next/first action 5344 hci_run(); 5345 5346 return 0; 5347 } 5348 5349 5350 static void hci_halting_run(void) { 5351 5352 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5353 5354 hci_connection_t *connection; 5355 #ifdef ENABLE_BLE 5356 #ifdef ENABLE_LE_PERIPHERAL 5357 bool stop_advertismenets; 5358 #endif 5359 #endif 5360 5361 switch (hci_stack->substate) { 5362 case HCI_HALTING_CLASSIC_STOP: 5363 #ifdef ENABLE_CLASSIC 5364 if (!hci_can_send_command_packet_now()) return; 5365 5366 if (hci_stack->connectable || hci_stack->discoverable){ 5367 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5368 hci_send_cmd(&hci_write_scan_enable, 0); 5369 return; 5370 } 5371 #endif 5372 /* fall through */ 5373 5374 case HCI_HALTING_LE_ADV_STOP: 5375 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5376 5377 #ifdef ENABLE_BLE 5378 #ifdef ENABLE_LE_PERIPHERAL 5379 if (!hci_can_send_command_packet_now()) return; 5380 5381 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5382 5383 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5384 if (hci_extended_advertising_supported()){ 5385 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5386 btstack_linked_list_iterator_t it; 5387 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5388 // stop all periodic advertisements and check if an extended set is active 5389 while (btstack_linked_list_iterator_has_next(&it)){ 5390 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5391 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5392 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5393 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5394 return; 5395 } 5396 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5397 stop_advertismenets = true; 5398 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5399 } 5400 } 5401 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5402 if (stop_advertismenets){ 5403 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5404 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5405 return; 5406 } 5407 } else 5408 #else /* ENABLE_LE_PERIPHERAL */ 5409 { 5410 if (stop_advertismenets) { 5411 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5412 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5413 return; 5414 } 5415 } 5416 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5417 #endif /* ENABLE_LE_PERIPHERAL */ 5418 #endif /* ENABLE_BLE */ 5419 5420 /* fall through */ 5421 5422 case HCI_HALTING_LE_SCAN_STOP: 5423 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5424 if (!hci_can_send_command_packet_now()) return; 5425 5426 #ifdef ENABLE_BLE 5427 #ifdef ENABLE_LE_CENTRAL 5428 if (hci_stack->le_scanning_active){ 5429 hci_le_scan_stop(); 5430 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5431 return; 5432 } 5433 #endif 5434 #endif 5435 5436 /* fall through */ 5437 5438 case HCI_HALTING_DISCONNECT_ALL: 5439 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5440 if (!hci_can_send_command_packet_now()) return; 5441 5442 // close all open connections 5443 connection = (hci_connection_t *) hci_stack->connections; 5444 if (connection) { 5445 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5446 5447 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5448 5449 // check state 5450 switch(connection->state) { 5451 case SENT_DISCONNECT: 5452 case RECEIVED_DISCONNECTION_COMPLETE: 5453 // wait until connection is gone 5454 return; 5455 default: 5456 break; 5457 } 5458 5459 // finally, send the disconnect command 5460 connection->state = SENT_DISCONNECT; 5461 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5462 return; 5463 } 5464 5465 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5466 // stop BIGs and BIG Syncs 5467 if (hci_stack->le_audio_bigs != NULL){ 5468 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5469 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5470 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5471 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5472 return; 5473 } 5474 if (hci_stack->le_audio_big_syncs != NULL){ 5475 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5476 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5477 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5478 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5479 return; 5480 } 5481 #endif 5482 5483 btstack_run_loop_remove_timer(&hci_stack->timeout); 5484 5485 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5486 log_info("HCI_STATE_HALTING: wait 50 ms"); 5487 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5488 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5489 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5490 btstack_run_loop_add_timer(&hci_stack->timeout); 5491 break; 5492 5493 case HCI_HALTING_W4_CLOSE_TIMER: 5494 // keep waiting 5495 break; 5496 5497 case HCI_HALTING_CLOSE: 5498 // close left over connections (that had not been properly closed before) 5499 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5500 hci_discard_connections(); 5501 5502 log_info("HCI_STATE_HALTING, calling off"); 5503 5504 // switch mode 5505 hci_power_control_off(); 5506 5507 log_info("HCI_STATE_HALTING, emitting state"); 5508 hci_emit_state(); 5509 log_info("HCI_STATE_HALTING, done"); 5510 break; 5511 5512 default: 5513 break; 5514 } 5515 }; 5516 5517 static void hci_falling_asleep_run(void){ 5518 hci_connection_t * connection; 5519 switch(hci_stack->substate) { 5520 case HCI_FALLING_ASLEEP_DISCONNECT: 5521 log_info("HCI_STATE_FALLING_ASLEEP"); 5522 // close all open connections 5523 connection = (hci_connection_t *) hci_stack->connections; 5524 if (connection){ 5525 5526 // send disconnect 5527 if (!hci_can_send_command_packet_now()) return; 5528 5529 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5530 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5531 5532 // send disconnected event right away - causes higher layer connections to get closed, too. 5533 hci_shutdown_connection(connection); 5534 return; 5535 } 5536 5537 if (hci_classic_supported()){ 5538 // disable page and inquiry scan 5539 if (!hci_can_send_command_packet_now()) return; 5540 5541 log_info("HCI_STATE_HALTING, disabling inq scans"); 5542 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5543 5544 // continue in next sub state 5545 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5546 break; 5547 } 5548 5549 /* fall through */ 5550 5551 case HCI_FALLING_ASLEEP_COMPLETE: 5552 log_info("HCI_STATE_HALTING, calling sleep"); 5553 // switch mode 5554 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5555 hci_emit_state(); 5556 break; 5557 5558 default: 5559 break; 5560 } 5561 } 5562 5563 #ifdef ENABLE_CLASSIC 5564 5565 static void hci_update_scan_enable(void){ 5566 // 2 = page scan, 1 = inq scan 5567 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5568 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5569 hci_run(); 5570 } 5571 5572 void gap_discoverable_control(uint8_t enable){ 5573 if (enable) enable = 1; // normalize argument 5574 5575 if (hci_stack->discoverable == enable){ 5576 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5577 return; 5578 } 5579 5580 hci_stack->discoverable = enable; 5581 hci_update_scan_enable(); 5582 } 5583 5584 void gap_connectable_control(uint8_t enable){ 5585 if (enable) enable = 1; // normalize argument 5586 5587 // don't emit event 5588 if (hci_stack->connectable == enable) return; 5589 5590 hci_stack->connectable = enable; 5591 hci_update_scan_enable(); 5592 } 5593 #endif 5594 5595 void gap_local_bd_addr(bd_addr_t address_buffer){ 5596 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5597 } 5598 5599 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5600 static void hci_host_num_completed_packets(void){ 5601 5602 // create packet manually as arrays are not supported and num_commands should not get reduced 5603 hci_reserve_packet_buffer(); 5604 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5605 5606 uint16_t size = 0; 5607 uint16_t num_handles = 0; 5608 packet[size++] = 0x35; 5609 packet[size++] = 0x0c; 5610 size++; // skip param len 5611 size++; // skip num handles 5612 5613 // add { handle, packets } entries 5614 btstack_linked_item_t * it; 5615 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5616 hci_connection_t * connection = (hci_connection_t *) it; 5617 if (connection->num_packets_completed){ 5618 little_endian_store_16(packet, size, connection->con_handle); 5619 size += 2; 5620 little_endian_store_16(packet, size, connection->num_packets_completed); 5621 size += 2; 5622 // 5623 num_handles++; 5624 connection->num_packets_completed = 0; 5625 } 5626 } 5627 5628 packet[2] = size - 3; 5629 packet[3] = num_handles; 5630 5631 hci_stack->host_completed_packets = 0; 5632 5633 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5634 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5635 5636 // release packet buffer for synchronous transport implementations 5637 if (hci_transport_synchronous()){ 5638 hci_release_packet_buffer(); 5639 hci_emit_transport_packet_sent(); 5640 } 5641 } 5642 #endif 5643 5644 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5645 UNUSED(ds); 5646 hci_stack->substate = HCI_HALTING_CLOSE; 5647 hci_halting_run(); 5648 } 5649 5650 static bool hci_run_acl_fragments(void){ 5651 if (hci_stack->acl_fragmentation_total_size > 0u) { 5652 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5653 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5654 if (connection) { 5655 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5656 hci_send_acl_packet_fragments(connection); 5657 return true; 5658 } 5659 } else { 5660 // connection gone -> discard further fragments 5661 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5662 hci_stack->acl_fragmentation_total_size = 0; 5663 hci_stack->acl_fragmentation_pos = 0; 5664 } 5665 } 5666 return false; 5667 } 5668 5669 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5670 static bool hci_run_iso_fragments(void){ 5671 if (hci_stack->iso_fragmentation_total_size > 0u) { 5672 // TODO: flow control 5673 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5674 hci_send_iso_packet_fragments(); 5675 return true; 5676 } 5677 } 5678 return false; 5679 } 5680 #endif 5681 5682 #ifdef ENABLE_CLASSIC 5683 5684 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5685 static bool hci_classic_operation_active(void) { 5686 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5687 return true; 5688 } 5689 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5690 return true; 5691 } 5692 btstack_linked_item_t * it; 5693 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5694 hci_connection_t *connection = (hci_connection_t *) it; 5695 switch (connection->state) { 5696 case SENT_CREATE_CONNECTION: 5697 case SENT_CANCEL_CONNECTION: 5698 case SENT_DISCONNECT: 5699 return true; 5700 default: 5701 break; 5702 } 5703 } 5704 return false; 5705 } 5706 #endif 5707 5708 static bool hci_run_general_gap_classic(void){ 5709 5710 // assert stack is working and classic is active 5711 if (hci_classic_supported() == false) return false; 5712 if (hci_stack->state != HCI_STATE_WORKING) return false; 5713 5714 // decline incoming connections 5715 if (hci_stack->decline_reason){ 5716 uint8_t reason = hci_stack->decline_reason; 5717 hci_stack->decline_reason = 0; 5718 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5719 return true; 5720 } 5721 5722 if (hci_stack->gap_tasks_classic != 0){ 5723 hci_run_gap_tasks_classic(); 5724 return true; 5725 } 5726 5727 // start/stop inquiry 5728 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5729 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5730 if (hci_classic_operation_active() == false) 5731 #endif 5732 { 5733 uint8_t duration = hci_stack->inquiry_state; 5734 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5735 if (hci_stack->inquiry_max_period_length != 0){ 5736 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); 5737 } else { 5738 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5739 } 5740 return true; 5741 } 5742 } 5743 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5744 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5745 hci_send_cmd(&hci_inquiry_cancel); 5746 return true; 5747 } 5748 5749 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5750 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5751 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5752 return true; 5753 } 5754 5755 // remote name request 5756 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5757 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5758 if (hci_classic_operation_active() == false) 5759 #endif 5760 { 5761 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5762 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5763 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5764 return true; 5765 } 5766 } 5767 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5768 // Local OOB data 5769 if (hci_stack->classic_read_local_oob_data){ 5770 hci_stack->classic_read_local_oob_data = false; 5771 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5772 hci_send_cmd(&hci_read_local_extended_oob_data); 5773 } else { 5774 hci_send_cmd(&hci_read_local_oob_data); 5775 } 5776 } 5777 #endif 5778 // pairing 5779 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5780 uint8_t state = hci_stack->gap_pairing_state; 5781 uint8_t pin_code[16]; 5782 switch (state){ 5783 case GAP_PAIRING_STATE_SEND_PIN: 5784 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5785 memset(pin_code, 0, 16); 5786 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5787 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5788 break; 5789 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5790 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5791 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5792 break; 5793 case GAP_PAIRING_STATE_SEND_PASSKEY: 5794 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5795 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5796 break; 5797 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5798 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5799 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5800 break; 5801 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5802 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5803 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5804 break; 5805 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5806 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5807 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5808 break; 5809 default: 5810 break; 5811 } 5812 return true; 5813 } 5814 return false; 5815 } 5816 #endif 5817 5818 #ifdef ENABLE_BLE 5819 5820 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5821 static uint8_t hci_le_num_phys(uint8_t phys){ 5822 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5823 btstack_assert(phys); 5824 return num_bits_set[phys]; 5825 } 5826 #endif 5827 5828 #ifdef ENABLE_LE_CENTRAL 5829 static void hci_le_scan_stop(void){ 5830 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5831 if (hci_extended_advertising_supported()) { 5832 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5833 } else 5834 #endif 5835 { 5836 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5837 } 5838 } 5839 5840 static void 5841 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5842 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5843 if (hci_extended_advertising_supported()) { 5844 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5845 uint16_t le_connection_scan_interval[3]; 5846 uint16_t le_connection_scan_window[3]; 5847 uint16_t le_connection_interval_min[3]; 5848 uint16_t le_connection_interval_max[3]; 5849 uint16_t le_connection_latency[3]; 5850 uint16_t le_supervision_timeout[3]; 5851 uint16_t le_minimum_ce_length[3]; 5852 uint16_t le_maximum_ce_length[3]; 5853 5854 uint8_t i; 5855 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5856 for (i=0;i<num_phys;i++){ 5857 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5858 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5859 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5860 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5861 le_connection_latency[i] = hci_stack->le_connection_latency; 5862 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5863 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5864 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5865 } 5866 hci_send_cmd(&hci_le_extended_create_connection, 5867 initiator_filter_policy, 5868 hci_stack->le_connection_own_addr_type, // our addr type: 5869 address_type, // peer address type 5870 address, // peer bd addr 5871 hci_stack->le_connection_phys, // initiating PHY 5872 le_connection_scan_interval, // conn scan interval 5873 le_connection_scan_window, // conn scan windows 5874 le_connection_interval_min, // conn interval min 5875 le_connection_interval_max, // conn interval max 5876 le_connection_latency, // conn latency 5877 le_supervision_timeout, // conn latency 5878 le_minimum_ce_length, // min ce length 5879 le_maximum_ce_length // max ce length 5880 ); 5881 } else 5882 #endif 5883 { 5884 hci_send_cmd(&hci_le_create_connection, 5885 hci_stack->le_connection_scan_interval, // conn scan interval 5886 hci_stack->le_connection_scan_window, // conn scan windows 5887 initiator_filter_policy, // don't use whitelist 5888 address_type, // peer address type 5889 address, // peer bd addr 5890 hci_stack->le_connection_own_addr_type, // our addr type: 5891 hci_stack->le_connection_interval_min, // conn interval min 5892 hci_stack->le_connection_interval_max, // conn interval max 5893 hci_stack->le_connection_latency, // conn latency 5894 hci_stack->le_supervision_timeout, // conn latency 5895 hci_stack->le_minimum_ce_length, // min ce length 5896 hci_stack->le_maximum_ce_length // max ce length 5897 ); 5898 } 5899 } 5900 #endif 5901 5902 #ifdef ENABLE_LE_PERIPHERAL 5903 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5904 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5905 uint8_t operation = 0; 5906 if (pos == 0){ 5907 // first fragment or complete data 5908 operation |= 1; 5909 } 5910 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5911 // last fragment or complete data 5912 operation |= 2; 5913 } 5914 return operation; 5915 } 5916 #endif 5917 #endif 5918 5919 static bool hci_run_general_gap_le(void){ 5920 5921 btstack_linked_list_iterator_t lit; 5922 5923 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5924 if (hci_stack->le_resolvable_private_address_update_s > 0){ 5925 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 5926 hci_stack->le_resolvable_private_address_update_s = 0; 5927 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 5928 return true; 5929 } 5930 #endif 5931 5932 // Phase 1: collect what to stop 5933 5934 #ifdef ENABLE_LE_CENTRAL 5935 bool scanning_stop = false; 5936 bool connecting_stop = false; 5937 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5938 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5939 bool periodic_sync_stop = false; 5940 #endif 5941 #endif 5942 #endif 5943 5944 #ifdef ENABLE_LE_PERIPHERAL 5945 bool advertising_stop = false; 5946 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5947 le_advertising_set_t * advertising_stop_set = NULL; 5948 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5949 bool periodic_advertising_stop = false; 5950 #endif 5951 #endif 5952 #endif 5953 5954 // check if own address changes 5955 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 5956 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 5957 5958 // check if whitelist needs modification 5959 bool whitelist_modification_pending = false; 5960 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5961 while (btstack_linked_list_iterator_has_next(&lit)){ 5962 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5963 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5964 whitelist_modification_pending = true; 5965 break; 5966 } 5967 } 5968 5969 // check if resolving list needs modification 5970 bool resolving_list_modification_pending = false; 5971 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5972 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5973 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5974 resolving_list_modification_pending = true; 5975 } 5976 #endif 5977 5978 #ifdef ENABLE_LE_CENTRAL 5979 5980 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5981 // check if periodic advertiser list needs modification 5982 bool periodic_list_modification_pending = false; 5983 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5984 while (btstack_linked_list_iterator_has_next(&lit)){ 5985 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5986 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5987 periodic_list_modification_pending = true; 5988 break; 5989 } 5990 } 5991 #endif 5992 5993 // scanning control 5994 if (hci_stack->le_scanning_active) { 5995 // stop if: 5996 // - parameter change required 5997 // - it's disabled 5998 // - whitelist change required but used for scanning 5999 // - resolving list modified 6000 // - own address changes 6001 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6002 if ((hci_stack->le_scanning_param_update) || 6003 !hci_stack->le_scanning_enabled || 6004 (scanning_uses_whitelist && whitelist_modification_pending) || 6005 resolving_list_modification_pending || 6006 random_address_change){ 6007 6008 scanning_stop = true; 6009 } 6010 } 6011 6012 // connecting control 6013 bool connecting_with_whitelist; 6014 switch (hci_stack->le_connecting_state){ 6015 case LE_CONNECTING_DIRECT: 6016 case LE_CONNECTING_WHITELIST: 6017 // stop connecting if: 6018 // - connecting uses white and whitelist modification pending 6019 // - if it got disabled 6020 // - resolving list modified 6021 // - own address changes 6022 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6023 if ((connecting_with_whitelist && whitelist_modification_pending) || 6024 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6025 resolving_list_modification_pending || 6026 random_address_change) { 6027 6028 connecting_stop = true; 6029 } 6030 break; 6031 default: 6032 break; 6033 } 6034 6035 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6036 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6037 // periodic sync control 6038 bool sync_with_advertiser_list; 6039 switch(hci_stack->le_periodic_sync_state){ 6040 case LE_CONNECTING_DIRECT: 6041 case LE_CONNECTING_WHITELIST: 6042 // stop sync if: 6043 // - sync with advertiser list and advertiser list modification pending 6044 // - if it got disabled 6045 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6046 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6047 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6048 periodic_sync_stop = true; 6049 } 6050 break; 6051 default: 6052 break; 6053 } 6054 #endif 6055 #endif 6056 6057 #endif /* ENABLE_LE_CENTRAL */ 6058 6059 #ifdef ENABLE_LE_PERIPHERAL 6060 // le advertisement control 6061 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6062 // stop if: 6063 // - parameter change required 6064 // - random address used in advertising and changes 6065 // - it's disabled 6066 // - whitelist change required but used for advertisement filter policy 6067 // - resolving list modified 6068 // - own address changes 6069 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6070 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6071 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6072 if (advertising_change || 6073 (advertising_uses_random_address && random_address_change) || 6074 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6075 (advertising_uses_whitelist && whitelist_modification_pending) || 6076 resolving_list_modification_pending || 6077 random_address_change) { 6078 6079 advertising_stop = true; 6080 } 6081 } 6082 6083 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6084 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 6085 btstack_linked_list_iterator_t it; 6086 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6087 while (btstack_linked_list_iterator_has_next(&it)){ 6088 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6089 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6090 // stop if: 6091 // - parameter change required 6092 // - random address used in connectable advertising and changes 6093 // - it's disabled 6094 // - whitelist change required but used for advertisement filter policy 6095 // - resolving list modified 6096 // - own address changes 6097 // - advertisement set will be removed 6098 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6099 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6100 bool advertising_uses_random_address = 6101 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6102 advertising_connectable; 6103 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6104 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6105 bool advertising_set_random_address_change = 6106 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6107 bool advertising_set_will_be_removed = 6108 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6109 if (advertising_parameter_change || 6110 (advertising_uses_random_address && advertising_set_random_address_change) || 6111 (advertising_enabled == false) || 6112 (advertising_uses_whitelist && whitelist_modification_pending) || 6113 resolving_list_modification_pending || 6114 advertising_set_will_be_removed) { 6115 6116 advertising_stop = true; 6117 advertising_stop_set = advertising_set; 6118 break; 6119 } 6120 } 6121 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6122 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6123 // stop if: 6124 // - it's disabled 6125 // - parameter change required 6126 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6127 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6128 if ((periodic_enabled == false) || periodic_parameter_change){ 6129 periodic_advertising_stop = true; 6130 advertising_stop_set = advertising_set; 6131 } 6132 } 6133 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6134 } 6135 } 6136 #endif 6137 6138 #endif 6139 6140 6141 // Phase 2: stop everything that should be off during modifications 6142 6143 6144 // 2.1 Outgoing connection 6145 #ifdef ENABLE_LE_CENTRAL 6146 if (connecting_stop){ 6147 hci_send_cmd(&hci_le_create_connection_cancel); 6148 return true; 6149 } 6150 #endif 6151 6152 // 2.2 Scanning 6153 #ifdef ENABLE_LE_CENTRAL 6154 if (scanning_stop){ 6155 hci_stack->le_scanning_active = false; 6156 hci_le_scan_stop(); 6157 return true; 6158 } 6159 6160 // 2.3 Periodic Sync 6161 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6162 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6163 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6164 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6165 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6166 return true; 6167 } 6168 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6169 if (periodic_sync_stop){ 6170 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6171 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6172 return true; 6173 } 6174 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6175 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6176 #endif /* ENABLE_LE_CENTRAL */ 6177 6178 // 2.4 Advertising: legacy, extended, periodic 6179 #ifdef ENABLE_LE_PERIPHERAL 6180 if (advertising_stop){ 6181 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6182 if (hci_extended_advertising_supported()) { 6183 uint8_t advertising_stop_handle; 6184 if (advertising_stop_set != NULL){ 6185 advertising_stop_handle = advertising_stop_set->advertising_handle; 6186 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6187 } else { 6188 advertising_stop_handle = 0; 6189 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6190 } 6191 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6192 const uint16_t durations[] = { 0 }; 6193 const uint16_t max_events[] = { 0 }; 6194 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6195 } else 6196 #endif 6197 { 6198 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6199 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6200 } 6201 return true; 6202 } 6203 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6204 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6205 if (periodic_advertising_stop){ 6206 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6207 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6208 return true; 6209 } 6210 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6211 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6212 #endif /* ENABLE_LE_PERIPHERAL */ 6213 6214 6215 // Phase 3: modify 6216 6217 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6218 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6219 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6220 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6221 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6222 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6223 #endif 6224 return true; 6225 } 6226 6227 #ifdef ENABLE_LE_CENTRAL 6228 if (hci_stack->le_scanning_param_update){ 6229 hci_stack->le_scanning_param_update = false; 6230 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6231 if (hci_extended_advertising_supported()){ 6232 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6233 uint8_t scan_types[2]; 6234 uint16_t scan_intervals[2]; 6235 uint16_t scan_windows[2]; 6236 6237 uint8_t i; 6238 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6239 for (i=0;i<num_phys;i++){ 6240 scan_types[i] = hci_stack->le_scan_type; 6241 scan_intervals[i] = hci_stack->le_scan_interval; 6242 scan_windows[i] = hci_stack->le_scan_window; 6243 } 6244 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6245 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6246 } else 6247 #endif 6248 { 6249 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6250 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6251 } 6252 return true; 6253 } 6254 #endif 6255 6256 #ifdef ENABLE_LE_PERIPHERAL 6257 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6258 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6259 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6260 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6261 if (hci_extended_advertising_supported()){ 6262 // map advertisment type to advertising event properties 6263 uint16_t adv_event_properties = 0; 6264 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6265 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6266 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6267 } 6268 hci_stack->le_advertising_set_in_current_command = 0; 6269 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6270 0, 6271 adv_event_properties, 6272 hci_stack->le_advertisements_interval_min, 6273 hci_stack->le_advertisements_interval_max, 6274 hci_stack->le_advertisements_channel_map, 6275 hci_stack->le_advertisements_own_addr_type, 6276 hci_stack->le_advertisements_direct_address_type, 6277 hci_stack->le_advertisements_direct_address, 6278 hci_stack->le_advertisements_filter_policy, 6279 0x7f, // tx power: no preference 6280 0x01, // primary adv phy: LE 1M 6281 0, // secondary adv max skip 6282 0x01, // secondary adv phy 6283 0, // adv sid 6284 0 // scan request notification 6285 ); 6286 } else 6287 #endif 6288 { 6289 hci_send_cmd(&hci_le_set_advertising_parameters, 6290 hci_stack->le_advertisements_interval_min, 6291 hci_stack->le_advertisements_interval_max, 6292 hci_stack->le_advertisements_type, 6293 hci_stack->le_advertisements_own_addr_type, 6294 hci_stack->le_advertisements_direct_address_type, 6295 hci_stack->le_advertisements_direct_address, 6296 hci_stack->le_advertisements_channel_map, 6297 hci_stack->le_advertisements_filter_policy); 6298 } 6299 return true; 6300 } 6301 6302 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6303 // assumption: only set if extended advertising is supported 6304 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6305 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6306 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6307 return true; 6308 } 6309 #endif 6310 6311 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6312 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6313 uint8_t adv_data_clean[31]; 6314 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6315 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6316 hci_stack->le_advertisements_data_len); 6317 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6318 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6319 if (hci_extended_advertising_supported()){ 6320 hci_stack->le_advertising_set_in_current_command = 0; 6321 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6322 } else 6323 #endif 6324 { 6325 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6326 } 6327 return true; 6328 } 6329 6330 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6331 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6332 uint8_t scan_data_clean[31]; 6333 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6334 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6335 hci_stack->le_scan_response_data_len); 6336 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6337 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6338 if (hci_extended_advertising_supported()){ 6339 hci_stack->le_advertising_set_in_current_command = 0; 6340 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6341 } else 6342 #endif 6343 { 6344 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6345 } 6346 return true; 6347 } 6348 6349 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6350 if (hci_extended_advertising_supported()) { 6351 btstack_linked_list_iterator_t it; 6352 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6353 while (btstack_linked_list_iterator_has_next(&it)){ 6354 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6355 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6356 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6357 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6358 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6359 return true; 6360 } 6361 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6362 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6363 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6364 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6365 advertising_set->advertising_handle, 6366 advertising_set->extended_params.advertising_event_properties, 6367 advertising_set->extended_params.primary_advertising_interval_min, 6368 advertising_set->extended_params.primary_advertising_interval_max, 6369 advertising_set->extended_params.primary_advertising_channel_map, 6370 advertising_set->extended_params.own_address_type, 6371 advertising_set->extended_params.peer_address_type, 6372 advertising_set->extended_params.peer_address, 6373 advertising_set->extended_params.advertising_filter_policy, 6374 advertising_set->extended_params.advertising_tx_power, 6375 advertising_set->extended_params.primary_advertising_phy, 6376 advertising_set->extended_params.secondary_advertising_max_skip, 6377 advertising_set->extended_params.secondary_advertising_phy, 6378 advertising_set->extended_params.advertising_sid, 6379 advertising_set->extended_params.scan_request_notification_enable 6380 ); 6381 return true; 6382 } 6383 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6384 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6385 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6386 return true; 6387 } 6388 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6389 uint16_t pos = advertising_set->adv_data_pos; 6390 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6391 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6392 if ((operation & 0x02) != 0){ 6393 // last fragment or complete data 6394 operation |= 2; 6395 advertising_set->adv_data_pos = 0; 6396 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6397 } else { 6398 advertising_set->adv_data_pos += data_to_upload; 6399 } 6400 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6401 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6402 return true; 6403 } 6404 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6405 uint16_t pos = advertising_set->scan_data_pos; 6406 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6407 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6408 if ((operation & 0x02) != 0){ 6409 advertising_set->scan_data_pos = 0; 6410 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6411 } else { 6412 advertising_set->scan_data_pos += data_to_upload; 6413 } 6414 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6415 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6416 return true; 6417 } 6418 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6419 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6420 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6421 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6422 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6423 advertising_set->advertising_handle, 6424 advertising_set->periodic_params.periodic_advertising_interval_min, 6425 advertising_set->periodic_params.periodic_advertising_interval_max, 6426 advertising_set->periodic_params.periodic_advertising_properties); 6427 return true; 6428 } 6429 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6430 uint16_t pos = advertising_set->periodic_data_pos; 6431 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6432 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6433 if ((operation & 0x02) != 0){ 6434 // last fragment or complete data 6435 operation |= 2; 6436 advertising_set->periodic_data_pos = 0; 6437 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6438 } else { 6439 advertising_set->periodic_data_pos += data_to_upload; 6440 } 6441 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6442 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6443 return true; 6444 } 6445 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6446 } 6447 } 6448 #endif 6449 6450 #endif 6451 6452 #ifdef ENABLE_LE_CENTRAL 6453 // if connect with whitelist was active and is not cancelled yet, wait until next time 6454 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6455 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6456 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6457 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6458 #endif 6459 #endif 6460 6461 // LE Whitelist Management 6462 if (whitelist_modification_pending){ 6463 // add/remove entries 6464 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6465 while (btstack_linked_list_iterator_has_next(&lit)){ 6466 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6467 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6468 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6469 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6470 bd_addr_type_t address_type = entry->address_type; 6471 bd_addr_t address; 6472 memcpy(address, entry->address, 6); 6473 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6474 // remove from whitelist if not scheduled for re-addition 6475 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6476 btstack_memory_whitelist_entry_free(entry); 6477 } 6478 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6479 return true; 6480 } 6481 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6482 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6483 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6484 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6485 return true; 6486 } 6487 } 6488 } 6489 6490 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6491 // LE Resolving List Management 6492 if (resolving_list_supported) { 6493 uint16_t i; 6494 switch (hci_stack->le_resolving_list_state) { 6495 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6496 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6497 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6498 return true; 6499 case LE_RESOLVING_LIST_READ_SIZE: 6500 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6501 hci_send_cmd(&hci_le_read_resolving_list_size); 6502 return true; 6503 case LE_RESOLVING_LIST_SEND_CLEAR: 6504 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6505 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6506 sizeof(hci_stack->le_resolving_list_add_entries)); 6507 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6508 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6509 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6510 sizeof(hci_stack->le_resolving_list_remove_entries)); 6511 hci_send_cmd(&hci_le_clear_resolving_list); 6512 return true; 6513 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6514 // first remove old entries 6515 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6516 uint8_t offset = i >> 3; 6517 uint8_t mask = 1 << (i & 7); 6518 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6519 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6520 bd_addr_t peer_identity_addreses; 6521 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6522 sm_key_t peer_irk; 6523 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6524 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6525 6526 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6527 // trigger whitelist entry 'update' (work around for controller bug) 6528 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6529 while (btstack_linked_list_iterator_has_next(&lit)) { 6530 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6531 if (entry->address_type != peer_identity_addr_type) continue; 6532 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6533 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6534 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6535 } 6536 #endif 6537 6538 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6539 peer_identity_addreses); 6540 return true; 6541 } 6542 6543 // then add new entries 6544 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6545 uint8_t offset = i >> 3; 6546 uint8_t mask = 1 << (i & 7); 6547 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6548 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6549 bd_addr_t peer_identity_addreses; 6550 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6551 sm_key_t peer_irk; 6552 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6553 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6554 if (btstack_is_null(peer_irk, 16)) continue; 6555 const uint8_t *local_irk = gap_get_persistent_irk(); 6556 // command uses format specifier 'P' that stores 16-byte value without flip 6557 uint8_t local_irk_flipped[16]; 6558 uint8_t peer_irk_flipped[16]; 6559 reverse_128(local_irk, local_irk_flipped); 6560 reverse_128(peer_irk, peer_irk_flipped); 6561 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6562 peer_irk_flipped, local_irk_flipped); 6563 return true; 6564 } 6565 6566 // finally, set privacy mode 6567 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6568 uint8_t offset = i >> 3; 6569 uint8_t mask = 1 << (i & 7); 6570 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6571 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6572 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6573 // Network Privacy Mode is default 6574 continue; 6575 } 6576 bd_addr_t peer_identity_address; 6577 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6578 sm_key_t peer_irk; 6579 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6580 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6581 if (btstack_is_null(peer_irk, 16)) continue; 6582 // command uses format specifier 'P' that stores 16-byte value without flip 6583 uint8_t peer_irk_flipped[16]; 6584 reverse_128(peer_irk, peer_irk_flipped); 6585 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6586 return true; 6587 } 6588 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6589 break; 6590 6591 default: 6592 break; 6593 } 6594 } 6595 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6596 #endif 6597 6598 #ifdef ENABLE_LE_CENTRAL 6599 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6600 // LE Whitelist Management 6601 if (periodic_list_modification_pending){ 6602 // add/remove entries 6603 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6604 while (btstack_linked_list_iterator_has_next(&lit)){ 6605 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6606 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6607 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6608 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6609 return true; 6610 } 6611 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6612 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6613 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6614 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6615 return true; 6616 } 6617 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6618 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6619 btstack_memory_periodic_advertiser_list_entry_free(entry); 6620 } 6621 } 6622 } 6623 #endif 6624 #endif 6625 6626 #ifdef ENABLE_LE_CENTRAL 6627 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6628 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6629 if (hci_stack->le_past_set_default_params){ 6630 hci_stack->le_past_set_default_params = false; 6631 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6632 hci_stack->le_past_mode, 6633 hci_stack->le_past_skip, 6634 hci_stack->le_past_sync_timeout, 6635 hci_stack->le_past_cte_type); 6636 return true; 6637 } 6638 #endif 6639 #endif 6640 #endif 6641 6642 // post-pone all actions until stack is fully working 6643 if (hci_stack->state != HCI_STATE_WORKING) return false; 6644 6645 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6646 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6647 6648 // Phase 4: restore state 6649 6650 #ifdef ENABLE_LE_CENTRAL 6651 // re-start scanning 6652 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6653 hci_stack->le_scanning_active = true; 6654 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6655 if (hci_extended_advertising_supported()){ 6656 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6657 } else 6658 #endif 6659 { 6660 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6661 } 6662 return true; 6663 } 6664 #endif 6665 6666 #ifdef ENABLE_LE_CENTRAL 6667 // re-start connecting 6668 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6669 bd_addr_t null_addr; 6670 memset(null_addr, 0, 6); 6671 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6672 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6673 hci_send_le_create_connection(1, 0, null_addr); 6674 return true; 6675 } 6676 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6677 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6678 switch(hci_stack->le_periodic_sync_request){ 6679 case LE_CONNECTING_DIRECT: 6680 case LE_CONNECTING_WHITELIST: 6681 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6682 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6683 hci_stack->le_periodic_sync_options, 6684 hci_stack->le_periodic_sync_advertising_sid, 6685 hci_stack->le_periodic_sync_advertiser_address_type, 6686 hci_stack->le_periodic_sync_advertiser_address, 6687 hci_stack->le_periodic_sync_skip, 6688 hci_stack->le_periodic_sync_timeout, 6689 hci_stack->le_periodic_sync_cte_type); 6690 return true; 6691 default: 6692 break; 6693 } 6694 } 6695 #endif 6696 #endif 6697 6698 #ifdef ENABLE_LE_PERIPHERAL 6699 // re-start advertising 6700 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6701 // check if advertisements should be enabled given 6702 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6703 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6704 6705 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6706 if (hci_extended_advertising_supported()){ 6707 const uint8_t advertising_handles[] = { 0 }; 6708 const uint16_t durations[] = { 0 }; 6709 const uint16_t max_events[] = { 0 }; 6710 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6711 } else 6712 #endif 6713 { 6714 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6715 } 6716 return true; 6717 } 6718 6719 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6720 if (hci_extended_advertising_supported()) { 6721 btstack_linked_list_iterator_t it; 6722 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6723 while (btstack_linked_list_iterator_has_next(&it)) { 6724 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6725 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6726 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6727 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6728 const uint16_t durations[] = { advertising_set->enable_timeout }; 6729 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6730 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6731 return true; 6732 } 6733 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6734 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6735 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6736 uint8_t enable = 1; 6737 if (advertising_set->periodic_include_adi){ 6738 enable |= 2; 6739 } 6740 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6741 return true; 6742 } 6743 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6744 } 6745 } 6746 #endif 6747 #endif 6748 6749 return false; 6750 } 6751 6752 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6753 static bool hci_run_iso_tasks(void){ 6754 btstack_linked_list_iterator_t it; 6755 6756 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6757 return false; 6758 } 6759 6760 // BIG 6761 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6762 while (btstack_linked_list_iterator_has_next(&it)){ 6763 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6764 switch (big->state){ 6765 case LE_AUDIO_BIG_STATE_CREATE: 6766 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6767 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6768 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6769 hci_send_cmd(&hci_le_create_big, 6770 big->params->big_handle, 6771 big->params->advertising_handle, 6772 big->params->num_bis, 6773 big->params->sdu_interval_us, 6774 big->params->max_sdu, 6775 big->params->max_transport_latency_ms, 6776 big->params->rtn, 6777 big->params->phy, 6778 big->params->packing, 6779 big->params->framing, 6780 big->params->encryption, 6781 big->params->broadcast_code); 6782 return true; 6783 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6784 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6785 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); 6786 return true; 6787 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6788 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6789 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6790 return true; 6791 case LE_AUDIO_BIG_STATE_TERMINATE: 6792 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6793 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6794 return true; 6795 default: 6796 break; 6797 } 6798 } 6799 6800 // BIG Sync 6801 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6802 while (btstack_linked_list_iterator_has_next(&it)){ 6803 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6804 switch (big_sync->state){ 6805 case LE_AUDIO_BIG_STATE_CREATE: 6806 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6807 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6808 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6809 hci_send_cmd(&hci_le_big_create_sync, 6810 big_sync->params->big_handle, 6811 big_sync->params->sync_handle, 6812 big_sync->params->encryption, 6813 big_sync->params->broadcast_code, 6814 big_sync->params->mse, 6815 big_sync->params->big_sync_timeout_10ms, 6816 big_sync->params->num_bis, 6817 big_sync->params->bis_indices); 6818 return true; 6819 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6820 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6821 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); 6822 return true; 6823 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6824 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6825 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6826 return true; 6827 case LE_AUDIO_BIG_STATE_TERMINATE: 6828 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6829 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6830 return true; 6831 default: 6832 break; 6833 } 6834 } 6835 6836 // CIG 6837 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6838 while (btstack_linked_list_iterator_has_next(&it)) { 6839 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6840 uint8_t i; 6841 // Set CIG Parameters 6842 uint8_t cis_id[MAX_NR_CIS]; 6843 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6844 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6845 uint8_t phy_c_to_p[MAX_NR_CIS]; 6846 uint8_t phy_p_to_c[MAX_NR_CIS]; 6847 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6848 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6849 switch (cig->state) { 6850 case LE_AUDIO_CIG_STATE_CREATE: 6851 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6852 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6853 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6854 le_audio_cig_params_t * params = cig->params; 6855 for (i = 0; i < params->num_cis; i++) { 6856 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6857 cis_id[i] = cis_params->cis_id; 6858 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6859 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6860 phy_c_to_p[i] = cis_params->phy_c_to_p; 6861 phy_p_to_c[i] = cis_params->phy_p_to_c; 6862 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6863 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6864 } 6865 hci_send_cmd(&hci_le_set_cig_parameters, 6866 cig->cig_id, 6867 params->sdu_interval_c_to_p, 6868 params->sdu_interval_p_to_c, 6869 params->worst_case_sca, 6870 params->packing, 6871 params->framing, 6872 params->max_transport_latency_c_to_p, 6873 params->max_transport_latency_p_to_c, 6874 params->num_cis, 6875 cis_id, 6876 max_sdu_c_to_p, 6877 max_sdu_p_to_c, 6878 phy_c_to_p, 6879 phy_p_to_c, 6880 rtn_c_to_p, 6881 rtn_p_to_c 6882 ); 6883 return true; 6884 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6885 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6886 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6887 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6888 for (i=0;i<cig->num_cis;i++){ 6889 cig->cis_setup_active[i] = true; 6890 } 6891 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6892 return true; 6893 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6894 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6895 // find next path to setup 6896 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6897 if (cig->cis_established[cis_index] == false) { 6898 continue; 6899 } 6900 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6901 bool setup = true; 6902 if (cis_direction == 0){ 6903 // 0 - input - host to controller 6904 // we are central => central to peripheral 6905 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6906 } else { 6907 // 1 - output - controller to host 6908 // we are central => peripheral to central 6909 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6910 } 6911 if (setup){ 6912 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6913 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6914 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6915 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); 6916 return true; 6917 } 6918 cig->state_vars.next_cis++; 6919 } 6920 // emit done 6921 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6922 default: 6923 break; 6924 } 6925 } 6926 6927 // CIS Accept/Reject 6928 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6929 while (btstack_linked_list_iterator_has_next(&it)) { 6930 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6931 hci_con_handle_t con_handle; 6932 switch (iso_stream->state){ 6933 case HCI_ISO_STREAM_W2_ACCEPT: 6934 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6935 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6936 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6937 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 6938 return true; 6939 case HCI_ISO_STREAM_W2_REJECT: 6940 con_handle = iso_stream->cis_handle; 6941 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6942 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6943 hci_iso_stream_finalize(iso_stream); 6944 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6945 return true; 6946 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6947 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6948 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6949 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6950 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); 6951 break; 6952 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6953 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6954 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6955 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6956 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); 6957 break; 6958 default: 6959 break; 6960 } 6961 } 6962 6963 return false; 6964 } 6965 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6966 #endif 6967 6968 static bool hci_run_general_pending_commands(void){ 6969 btstack_linked_item_t * it; 6970 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6971 hci_connection_t * connection = (hci_connection_t *) it; 6972 6973 switch(connection->state){ 6974 case SEND_CREATE_CONNECTION: 6975 switch(connection->address_type){ 6976 #ifdef ENABLE_CLASSIC 6977 case BD_ADDR_TYPE_ACL: 6978 log_info("sending hci_create_connection"); 6979 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6980 break; 6981 #endif 6982 default: 6983 #ifdef ENABLE_BLE 6984 #ifdef ENABLE_LE_CENTRAL 6985 log_info("sending hci_le_create_connection"); 6986 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6987 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6988 hci_send_le_create_connection(0, connection->address_type, connection->address); 6989 connection->state = SENT_CREATE_CONNECTION; 6990 #endif 6991 #endif 6992 break; 6993 } 6994 return true; 6995 6996 #ifdef ENABLE_CLASSIC 6997 case RECEIVED_CONNECTION_REQUEST: 6998 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6999 log_info("sending hci_accept_connection_request"); 7000 connection->state = ACCEPTED_CONNECTION_REQUEST; 7001 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7002 return true; 7003 } 7004 break; 7005 #endif 7006 case SEND_DISCONNECT: 7007 connection->state = SENT_DISCONNECT; 7008 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7009 return true; 7010 7011 default: 7012 break; 7013 } 7014 7015 // no further commands if connection is about to get shut down 7016 if (connection->state == SENT_DISCONNECT) continue; 7017 7018 #ifdef ENABLE_CLASSIC 7019 7020 // Handling link key request requires remote supported features 7021 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7022 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7023 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7024 7025 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7026 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7027 if (have_link_key && security_level_sufficient){ 7028 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7029 } else { 7030 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7031 } 7032 return true; 7033 } 7034 7035 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7036 log_info("denying to pin request"); 7037 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7038 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7039 return true; 7040 } 7041 7042 // security assessment requires remote features 7043 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7044 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7045 hci_ssp_assess_security_on_io_cap_request(connection); 7046 // 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 7047 } 7048 7049 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7050 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7051 // set authentication requirements: 7052 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7053 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7054 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7055 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7056 authreq |= 1; 7057 } 7058 bool bonding = hci_stack->bondable; 7059 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7060 // if we have received IO Cap Response, we're in responder role 7061 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7062 if (bonding && !remote_bonding){ 7063 log_info("Remote not bonding, dropping local flag"); 7064 bonding = false; 7065 } 7066 } 7067 if (bonding){ 7068 if (connection->bonding_flags & BONDING_DEDICATED){ 7069 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7070 } else { 7071 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7072 } 7073 } 7074 uint8_t have_oob_data = 0; 7075 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7076 if (connection->classic_oob_c_192 != NULL){ 7077 have_oob_data |= 1; 7078 } 7079 if (connection->classic_oob_c_256 != NULL){ 7080 have_oob_data |= 2; 7081 } 7082 #endif 7083 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7084 return true; 7085 } 7086 7087 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7088 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7089 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7090 return true; 7091 } 7092 7093 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7094 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7095 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7096 const uint8_t zero[16] = { 0 }; 7097 const uint8_t * r_192 = zero; 7098 const uint8_t * c_192 = zero; 7099 const uint8_t * r_256 = zero; 7100 const uint8_t * c_256 = zero; 7101 // verify P-256 OOB 7102 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7103 c_256 = connection->classic_oob_c_256; 7104 if (connection->classic_oob_r_256 != NULL) { 7105 r_256 = connection->classic_oob_r_256; 7106 } 7107 } 7108 // verify P-192 OOB 7109 if ((connection->classic_oob_c_192 != NULL)) { 7110 c_192 = connection->classic_oob_c_192; 7111 if (connection->classic_oob_r_192 != NULL) { 7112 r_192 = connection->classic_oob_r_192; 7113 } 7114 } 7115 7116 // assess security 7117 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7118 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7119 if (need_level_4 && !can_reach_level_4){ 7120 log_info("Level 4 required, but not possible -> abort"); 7121 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7122 // send oob negative reply 7123 c_256 = NULL; 7124 c_192 = NULL; 7125 } 7126 7127 // Reply 7128 if (c_256 != zero) { 7129 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7130 } else if (c_192 != zero){ 7131 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7132 } else { 7133 hci_stack->classic_oob_con_handle = connection->con_handle; 7134 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7135 } 7136 return true; 7137 } 7138 #endif 7139 7140 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7141 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7142 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7143 return true; 7144 } 7145 7146 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7147 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7148 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7149 return true; 7150 } 7151 7152 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7153 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7154 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7155 return true; 7156 } 7157 7158 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7159 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7160 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7161 connection->state = SENT_DISCONNECT; 7162 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7163 return true; 7164 } 7165 7166 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7167 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7168 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7169 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7170 return true; 7171 } 7172 7173 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7174 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7175 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7176 return true; 7177 } 7178 7179 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7180 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7181 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7182 return true; 7183 } 7184 7185 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7186 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7187 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7188 return true; 7189 } 7190 7191 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7192 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7193 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7194 return true; 7195 } 7196 7197 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7198 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7199 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7200 return true; 7201 } 7202 #endif 7203 7204 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7205 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7206 #ifdef ENABLE_CLASSIC 7207 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7208 #endif 7209 if (connection->state != SENT_DISCONNECT){ 7210 connection->state = SENT_DISCONNECT; 7211 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7212 return true; 7213 } 7214 } 7215 7216 #ifdef ENABLE_CLASSIC 7217 uint16_t sniff_min_interval; 7218 switch (connection->sniff_min_interval){ 7219 case 0: 7220 break; 7221 case 0xffff: 7222 connection->sniff_min_interval = 0; 7223 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7224 return true; 7225 default: 7226 sniff_min_interval = connection->sniff_min_interval; 7227 connection->sniff_min_interval = 0; 7228 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7229 return true; 7230 } 7231 7232 if (connection->sniff_subrating_max_latency != 0xffff){ 7233 uint16_t max_latency = connection->sniff_subrating_max_latency; 7234 connection->sniff_subrating_max_latency = 0; 7235 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7236 return true; 7237 } 7238 7239 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7240 uint8_t service_type = (uint8_t) connection->qos_service_type; 7241 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7242 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); 7243 return true; 7244 } 7245 7246 if (connection->request_role != HCI_ROLE_INVALID){ 7247 hci_role_t role = connection->request_role; 7248 connection->request_role = HCI_ROLE_INVALID; 7249 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7250 return true; 7251 } 7252 #endif 7253 7254 if (connection->gap_connection_tasks != 0){ 7255 #ifdef ENABLE_CLASSIC 7256 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7257 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7258 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7259 return true; 7260 } 7261 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7262 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7263 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7264 return true; 7265 } 7266 #endif 7267 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7268 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7269 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7270 return true; 7271 } 7272 #ifdef ENABLE_BLE 7273 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7274 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7275 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7276 return true; 7277 } 7278 #endif 7279 } 7280 7281 #ifdef ENABLE_BLE 7282 switch (connection->le_con_parameter_update_state){ 7283 // response to L2CAP CON PARAMETER UPDATE REQUEST 7284 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7285 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7286 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7287 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7288 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7289 return true; 7290 case CON_PARAMETER_UPDATE_REPLY: 7291 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7292 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7293 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7294 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7295 return true; 7296 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7297 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7298 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7299 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7300 return true; 7301 default: 7302 break; 7303 } 7304 if (connection->le_phy_update_all_phys != 0xffu){ 7305 uint8_t all_phys = connection->le_phy_update_all_phys; 7306 connection->le_phy_update_all_phys = 0xff; 7307 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); 7308 return true; 7309 } 7310 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7311 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7312 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7313 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7314 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7315 return true; 7316 } 7317 if (connection->le_past_advertising_handle != 0xff){ 7318 uint8_t advertising_handle = connection->le_past_advertising_handle; 7319 connection->le_past_advertising_handle = 0xff; 7320 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7321 return true; 7322 } 7323 #endif 7324 #endif 7325 } 7326 return false; 7327 } 7328 7329 static void hci_run(void){ 7330 7331 // stack state sub statemachines 7332 switch (hci_stack->state) { 7333 case HCI_STATE_INITIALIZING: 7334 hci_initializing_run(); 7335 break; 7336 case HCI_STATE_HALTING: 7337 hci_halting_run(); 7338 break; 7339 case HCI_STATE_FALLING_ASLEEP: 7340 hci_falling_asleep_run(); 7341 break; 7342 default: 7343 break; 7344 } 7345 7346 // allow to run after initialization to working transition 7347 if (hci_stack->state != HCI_STATE_WORKING){ 7348 return; 7349 } 7350 7351 bool done; 7352 7353 // send continuation fragments first, as they block the prepared packet buffer 7354 done = hci_run_acl_fragments(); 7355 if (done) return; 7356 7357 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7358 done = hci_run_iso_fragments(); 7359 if (done) return; 7360 #endif 7361 7362 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7363 // send host num completed packets next as they don't require num_cmd_packets > 0 7364 if (!hci_can_send_comand_packet_transport()) return; 7365 if (hci_stack->host_completed_packets){ 7366 hci_host_num_completed_packets(); 7367 return; 7368 } 7369 #endif 7370 7371 if (!hci_can_send_command_packet_now()) return; 7372 7373 // global/non-connection oriented commands 7374 7375 7376 #ifdef ENABLE_CLASSIC 7377 // general gap classic 7378 done = hci_run_general_gap_classic(); 7379 if (done) return; 7380 #endif 7381 7382 #ifdef ENABLE_BLE 7383 // general gap le 7384 done = hci_run_general_gap_le(); 7385 if (done) return; 7386 7387 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7388 // ISO related tasks, e.g. BIG create/terminate/sync 7389 done = hci_run_iso_tasks(); 7390 if (done) return; 7391 #endif 7392 #endif 7393 7394 // send pending HCI commands 7395 hci_run_general_pending_commands(); 7396 } 7397 7398 #ifdef ENABLE_CLASSIC 7399 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7400 // bits 6-9 are 'don't use' 7401 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7402 7403 // restrict packet types to local and remote supported 7404 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7405 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7406 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7407 } 7408 #endif 7409 7410 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7411 // house-keeping 7412 7413 #ifdef ENABLE_CLASSIC 7414 bd_addr_t addr; 7415 hci_connection_t * conn; 7416 #endif 7417 #ifdef ENABLE_LE_CENTRAL 7418 uint8_t initiator_filter_policy; 7419 #endif 7420 7421 uint16_t opcode = little_endian_read_16(packet, 0); 7422 switch (opcode) { 7423 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7424 hci_stack->loopback_mode = packet[3]; 7425 break; 7426 7427 #ifdef ENABLE_CLASSIC 7428 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7429 reverse_bd_addr(&packet[3], addr); 7430 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7431 7432 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7433 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7434 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7435 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7436 } 7437 7438 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7439 if (!conn) { 7440 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7441 if (!conn) { 7442 // notify client that alloc failed 7443 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7444 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7445 } 7446 conn->state = SEND_CREATE_CONNECTION; 7447 } 7448 7449 log_info("conn state %u", conn->state); 7450 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7451 switch (conn->state) { 7452 // if connection active exists 7453 case OPEN: 7454 // and OPEN, emit connection complete command 7455 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7456 // packet not sent to controller 7457 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7458 case RECEIVED_DISCONNECTION_COMPLETE: 7459 // create connection triggered in disconnect complete event, let's do it now 7460 break; 7461 case SEND_CREATE_CONNECTION: 7462 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7463 if (hci_classic_operation_active()){ 7464 return ERROR_CODE_SUCCESS; 7465 } 7466 #endif 7467 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7468 break; 7469 default: 7470 // otherwise, just ignore as it is already in the open process 7471 // packet not sent to controller 7472 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7473 } 7474 conn->state = SENT_CREATE_CONNECTION; 7475 7476 // track outgoing connection 7477 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7478 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7479 break; 7480 7481 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7482 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7483 if (conn == NULL) { 7484 // neither SCO nor ACL connection for con handle 7485 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7486 } else { 7487 uint16_t remote_supported_sco_packets; 7488 switch (conn->address_type){ 7489 case BD_ADDR_TYPE_ACL: 7490 // assert SCO connection does not exit 7491 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7492 return ERROR_CODE_COMMAND_DISALLOWED; 7493 } 7494 // cache remote sco packet types 7495 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7496 7497 // allocate connection struct 7498 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7499 HCI_ROLE_MASTER); 7500 if (!conn) { 7501 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7502 } 7503 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7504 break; 7505 case BD_ADDR_TYPE_SCO: 7506 // update of existing SCO connection 7507 break; 7508 default: 7509 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7510 } 7511 } 7512 7513 // conn refers to hci connection of type sco now 7514 7515 conn->state = SENT_CREATE_CONNECTION; 7516 7517 // track outgoing connection to handle command status with error 7518 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7519 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7520 7521 // setup_synchronous_connection? Voice setting at offset 22 7522 // TODO: compare to current setting if sco connection already active 7523 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7524 7525 // derive sco payload length from packet types 7526 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7527 break; 7528 7529 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7530 // get SCO connection 7531 reverse_bd_addr(&packet[3], addr); 7532 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7533 if (conn == NULL){ 7534 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7535 } 7536 7537 conn->state = ACCEPTED_CONNECTION_REQUEST; 7538 7539 // track outgoing connection to handle command status with error 7540 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7541 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7542 7543 // accept_synchronous_connection? Voice setting at offset 18 7544 // TODO: compare to current setting if sco connection already active 7545 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7546 7547 // derive sco payload length from packet types 7548 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7549 break; 7550 #endif 7551 7552 #ifdef ENABLE_BLE 7553 #ifdef ENABLE_LE_CENTRAL 7554 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7555 // white list used? 7556 initiator_filter_policy = packet[7]; 7557 switch (initiator_filter_policy) { 7558 case 0: 7559 // whitelist not used 7560 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7561 break; 7562 case 1: 7563 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7564 break; 7565 default: 7566 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7567 break; 7568 } 7569 // track outgoing connection 7570 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7571 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7572 break; 7573 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7574 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7575 // white list used? 7576 initiator_filter_policy = packet[3]; 7577 switch (initiator_filter_policy) { 7578 case 0: 7579 // whitelist not used 7580 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7581 break; 7582 case 1: 7583 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7584 break; 7585 default: 7586 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7587 break; 7588 } 7589 // track outgoing connection 7590 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7591 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7592 break; 7593 #endif 7594 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7595 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7596 break; 7597 #endif 7598 #endif /* ENABLE_BLE */ 7599 default: 7600 break; 7601 } 7602 7603 hci_stack->num_cmd_packets--; 7604 7605 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7606 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7607 if (err != 0){ 7608 return ERROR_CODE_HARDWARE_FAILURE; 7609 } 7610 return ERROR_CODE_SUCCESS; 7611 } 7612 7613 // disconnect because of security block 7614 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7615 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7616 if (!connection) return; 7617 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7618 } 7619 7620 7621 // Configure Secure Simple Pairing 7622 7623 #ifdef ENABLE_CLASSIC 7624 7625 // enable will enable SSP during init 7626 void gap_ssp_set_enable(int enable){ 7627 hci_stack->ssp_enable = enable; 7628 } 7629 7630 static int hci_local_ssp_activated(void){ 7631 return gap_ssp_supported() && hci_stack->ssp_enable; 7632 } 7633 7634 // if set, BTstack will respond to io capability request using authentication requirement 7635 void gap_ssp_set_io_capability(int io_capability){ 7636 hci_stack->ssp_io_capability = io_capability; 7637 } 7638 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7639 hci_stack->ssp_authentication_requirement = authentication_requirement; 7640 } 7641 7642 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7643 void gap_ssp_set_auto_accept(int auto_accept){ 7644 hci_stack->ssp_auto_accept = auto_accept; 7645 } 7646 7647 void gap_secure_connections_enable(bool enable){ 7648 hci_stack->secure_connections_enable = enable; 7649 } 7650 bool gap_secure_connections_active(void){ 7651 return hci_stack->secure_connections_active; 7652 } 7653 7654 #endif 7655 7656 // va_list part of hci_send_cmd 7657 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7658 if (!hci_can_send_command_packet_now()){ 7659 log_error("hci_send_cmd called but cannot send packet now"); 7660 return ERROR_CODE_COMMAND_DISALLOWED; 7661 } 7662 7663 // for HCI INITIALIZATION 7664 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7665 hci_stack->last_cmd_opcode = cmd->opcode; 7666 7667 hci_reserve_packet_buffer(); 7668 uint8_t * packet = hci_stack->hci_packet_buffer; 7669 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7670 uint8_t status = hci_send_cmd_packet(packet, size); 7671 7672 // release packet buffer on error or for synchronous transport implementations 7673 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7674 hci_release_packet_buffer(); 7675 hci_emit_transport_packet_sent(); 7676 } 7677 7678 return status; 7679 } 7680 7681 /** 7682 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7683 */ 7684 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7685 va_list argptr; 7686 va_start(argptr, cmd); 7687 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7688 va_end(argptr); 7689 return status; 7690 } 7691 7692 // Create various non-HCI events. 7693 // TODO: generalize, use table similar to hci_create_command 7694 7695 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7696 // dump packet 7697 if (dump) { 7698 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7699 } 7700 7701 // dispatch to all event handlers 7702 btstack_linked_list_iterator_t it; 7703 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7704 while (btstack_linked_list_iterator_has_next(&it)){ 7705 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7706 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7707 } 7708 } 7709 7710 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7711 if (!hci_stack->acl_packet_handler) return; 7712 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7713 } 7714 7715 #ifdef ENABLE_CLASSIC 7716 static void hci_notify_if_sco_can_send_now(void){ 7717 // notify SCO sender if waiting 7718 if (!hci_stack->sco_waiting_for_can_send_now) return; 7719 if (hci_can_send_sco_packet_now()){ 7720 hci_stack->sco_waiting_for_can_send_now = 0; 7721 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7722 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7723 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7724 } 7725 } 7726 7727 // parsing end emitting has been merged to reduce code size 7728 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7729 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7730 7731 uint8_t * eir_data; 7732 ad_context_t context; 7733 const uint8_t * name; 7734 uint8_t name_len; 7735 7736 if (size < 3) return; 7737 7738 int event_type = hci_event_packet_get_type(packet); 7739 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7740 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7741 7742 switch (event_type){ 7743 case HCI_EVENT_INQUIRY_RESULT: 7744 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7745 if (size != (3 + (num_responses * 14))) return; 7746 break; 7747 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7748 if (size != 257) return; 7749 if (num_responses != 1) return; 7750 break; 7751 default: 7752 return; 7753 } 7754 7755 // event[1] is set at the end 7756 int i; 7757 for (i=0; i<num_responses;i++){ 7758 memset(event, 0, sizeof(event)); 7759 event[0] = GAP_EVENT_INQUIRY_RESULT; 7760 uint8_t event_size = 27; // if name is not set by EIR 7761 7762 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7763 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7764 (void)memcpy(&event[9], 7765 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7766 3); // class of device 7767 (void)memcpy(&event[12], 7768 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7769 2); // clock offset 7770 7771 switch (event_type){ 7772 case HCI_EVENT_INQUIRY_RESULT: 7773 // 14,15,16,17 = 0, size 18 7774 break; 7775 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7776 event[14] = 1; 7777 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7778 // 16,17 = 0, size 18 7779 break; 7780 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7781 event[14] = 1; 7782 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7783 // EIR packets only contain a single inquiry response 7784 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7785 name = NULL; 7786 // Iterate over EIR data 7787 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7788 uint8_t data_type = ad_iterator_get_data_type(&context); 7789 uint8_t data_size = ad_iterator_get_data_len(&context); 7790 const uint8_t * data = ad_iterator_get_data(&context); 7791 // Prefer Complete Local Name over Shortened Local Name 7792 switch (data_type){ 7793 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7794 if (name) continue; 7795 /* fall through */ 7796 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7797 name = data; 7798 name_len = data_size; 7799 break; 7800 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7801 if (data_size != 8) break; 7802 event[16] = 1; 7803 memcpy(&event[17], data, 8); 7804 break; 7805 default: 7806 break; 7807 } 7808 } 7809 if (name){ 7810 event[25] = 1; 7811 // truncate name if needed 7812 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7813 event[26] = len; 7814 (void)memcpy(&event[27], name, len); 7815 event_size += len; 7816 } 7817 break; 7818 default: 7819 return; 7820 } 7821 event[1] = event_size - 2; 7822 hci_emit_event(event, event_size, 1); 7823 } 7824 } 7825 #endif 7826 7827 void hci_emit_state(void){ 7828 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7829 uint8_t event[3]; 7830 event[0] = BTSTACK_EVENT_STATE; 7831 event[1] = sizeof(event) - 2u; 7832 event[2] = hci_stack->state; 7833 hci_emit_event(event, sizeof(event), 1); 7834 } 7835 7836 #ifdef ENABLE_CLASSIC 7837 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7838 uint8_t event[13]; 7839 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7840 event[1] = sizeof(event) - 2; 7841 event[2] = status; 7842 little_endian_store_16(event, 3, con_handle); 7843 reverse_bd_addr(address, &event[5]); 7844 event[11] = 1; // ACL connection 7845 event[12] = 0; // encryption disabled 7846 hci_emit_event(event, sizeof(event), 1); 7847 } 7848 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7849 if (disable_l2cap_timeouts) return; 7850 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7851 uint8_t event[4]; 7852 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7853 event[1] = sizeof(event) - 2; 7854 little_endian_store_16(event, 2, conn->con_handle); 7855 hci_emit_event(event, sizeof(event), 1); 7856 } 7857 #endif 7858 7859 #ifdef ENABLE_BLE 7860 #ifdef ENABLE_LE_CENTRAL 7861 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){ 7862 uint8_t event[21]; 7863 event[0] = HCI_EVENT_LE_META; 7864 event[1] = sizeof(event) - 2u; 7865 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7866 event[3] = status; 7867 little_endian_store_16(event, 4, con_handle); 7868 event[6] = 0; // TODO: role 7869 event[7] = address_type; 7870 reverse_bd_addr(address, &event[8]); 7871 little_endian_store_16(event, 14, 0); // interval 7872 little_endian_store_16(event, 16, 0); // latency 7873 little_endian_store_16(event, 18, 0); // supervision timeout 7874 event[20] = 0; // master clock accuracy 7875 hci_emit_event(event, sizeof(event), 1); 7876 } 7877 #endif 7878 #endif 7879 7880 static void hci_emit_transport_packet_sent(void){ 7881 // notify upper stack that it might be possible to send again 7882 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7883 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7884 } 7885 7886 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7887 uint8_t event[6]; 7888 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7889 event[1] = sizeof(event) - 2u; 7890 event[2] = 0; // status = OK 7891 little_endian_store_16(event, 3, con_handle); 7892 event[5] = reason; 7893 hci_emit_event(event, sizeof(event), 1); 7894 } 7895 7896 static void hci_emit_nr_connections_changed(void){ 7897 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7898 uint8_t event[3]; 7899 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7900 event[1] = sizeof(event) - 2u; 7901 event[2] = nr_hci_connections(); 7902 hci_emit_event(event, sizeof(event), 1); 7903 } 7904 7905 static void hci_emit_hci_open_failed(void){ 7906 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7907 uint8_t event[2]; 7908 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7909 event[1] = sizeof(event) - 2u; 7910 hci_emit_event(event, sizeof(event), 1); 7911 } 7912 7913 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7914 log_info("hci_emit_dedicated_bonding_result %u ", status); 7915 uint8_t event[9]; 7916 int pos = 0; 7917 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7918 event[pos++] = sizeof(event) - 2u; 7919 event[pos++] = status; 7920 reverse_bd_addr(address, &event[pos]); 7921 hci_emit_event(event, sizeof(event), 1); 7922 } 7923 7924 7925 #ifdef ENABLE_CLASSIC 7926 7927 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7928 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7929 uint8_t event[5]; 7930 int pos = 0; 7931 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7932 event[pos++] = sizeof(event) - 2; 7933 little_endian_store_16(event, 2, con_handle); 7934 pos += 2; 7935 event[pos++] = level; 7936 hci_emit_event(event, sizeof(event), 1); 7937 } 7938 7939 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7940 if (!connection) return LEVEL_0; 7941 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7942 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7943 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7944 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7945 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7946 // LEVEL 4 always requires 128 bit encrytion key size 7947 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7948 security_level = LEVEL_3; 7949 } 7950 return security_level; 7951 } 7952 7953 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7954 uint8_t event[4]; 7955 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7956 event[1] = sizeof(event) - 2; 7957 event[2] = discoverable; 7958 event[3] = connectable; 7959 hci_emit_event(event, sizeof(event), 1); 7960 } 7961 7962 // query if remote side supports eSCO 7963 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7964 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7965 if (!connection) return false; 7966 return (connection->remote_supported_features[0] & 1) != 0; 7967 } 7968 7969 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 7970 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7971 if (!connection) return 0; 7972 return connection->remote_supported_sco_packets; 7973 } 7974 7975 static bool hci_ssp_supported(hci_connection_t * connection){ 7976 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7977 return (connection->bonding_flags & mask) == mask; 7978 } 7979 7980 // query if remote side supports SSP 7981 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7982 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7983 if (!connection) return false; 7984 return hci_ssp_supported(connection) ? 1 : 0; 7985 } 7986 7987 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7988 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7989 } 7990 7991 /** 7992 * Check if remote supported features query has completed 7993 */ 7994 bool hci_remote_features_available(hci_con_handle_t handle){ 7995 hci_connection_t * connection = hci_connection_for_handle(handle); 7996 if (!connection) return false; 7997 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7998 } 7999 8000 /** 8001 * Trigger remote supported features query 8002 */ 8003 8004 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8005 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8006 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8007 } 8008 } 8009 8010 void hci_remote_features_query(hci_con_handle_t con_handle){ 8011 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8012 if (!connection) return; 8013 hci_trigger_remote_features_for_connection(connection); 8014 hci_run(); 8015 } 8016 8017 // GAP API 8018 /** 8019 * @bbrief enable/disable bonding. default is enabled 8020 * @praram enabled 8021 */ 8022 void gap_set_bondable_mode(int enable){ 8023 hci_stack->bondable = enable ? 1 : 0; 8024 } 8025 /** 8026 * @brief Get bondable mode. 8027 * @return 1 if bondable 8028 */ 8029 int gap_get_bondable_mode(void){ 8030 return hci_stack->bondable; 8031 } 8032 8033 /** 8034 * @brief map link keys to security levels 8035 */ 8036 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8037 switch (link_key_type){ 8038 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8039 return LEVEL_4; 8040 case COMBINATION_KEY: 8041 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8042 return LEVEL_3; 8043 default: 8044 return LEVEL_2; 8045 } 8046 } 8047 8048 /** 8049 * @brief map link keys to secure connection yes/no 8050 */ 8051 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8052 switch (link_key_type){ 8053 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8054 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8055 return true; 8056 default: 8057 return false; 8058 } 8059 } 8060 8061 /** 8062 * @brief map link keys to authenticated 8063 */ 8064 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8065 switch (link_key_type){ 8066 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8067 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8068 return true; 8069 default: 8070 return false; 8071 } 8072 } 8073 8074 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8075 log_info("gap_mitm_protection_required_for_security_level %u", level); 8076 return level > LEVEL_2; 8077 } 8078 8079 /** 8080 * @brief get current security level 8081 */ 8082 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8083 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8084 if (!connection) return LEVEL_0; 8085 return gap_security_level_for_connection(connection); 8086 } 8087 8088 /** 8089 * @brief request connection to device to 8090 * @result GAP_AUTHENTICATION_RESULT 8091 */ 8092 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8093 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8094 if (!connection){ 8095 hci_emit_security_level(con_handle, LEVEL_0); 8096 return; 8097 } 8098 8099 btstack_assert(hci_is_le_connection(connection) == false); 8100 8101 // 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) 8102 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8103 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8104 requested_level = LEVEL_4; 8105 } 8106 8107 gap_security_level_t current_level = gap_security_level(con_handle); 8108 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8109 requested_level, connection->requested_security_level, current_level); 8110 8111 // authentication active if authentication request was sent or planned level > 0 8112 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8113 if (authentication_active){ 8114 // authentication already active 8115 if (connection->requested_security_level < requested_level){ 8116 // increase requested level as new level is higher 8117 // TODO: handle re-authentication when done 8118 connection->requested_security_level = requested_level; 8119 } 8120 } else { 8121 // no request active, notify if security sufficient 8122 if (requested_level <= current_level){ 8123 hci_emit_security_level(con_handle, current_level); 8124 return; 8125 } 8126 8127 // store request 8128 connection->requested_security_level = requested_level; 8129 8130 // start to authenticate connection 8131 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8132 8133 // request remote features if not already active, also trigger hci_run 8134 hci_remote_features_query(con_handle); 8135 } 8136 } 8137 8138 /** 8139 * @brief start dedicated bonding with device. disconnect after bonding 8140 * @param device 8141 * @param request MITM protection 8142 * @result GAP_DEDICATED_BONDING_COMPLETE 8143 */ 8144 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8145 8146 // create connection state machine 8147 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8148 8149 if (!connection){ 8150 return BTSTACK_MEMORY_ALLOC_FAILED; 8151 } 8152 8153 // delete link key 8154 gap_drop_link_key_for_bd_addr(device); 8155 8156 // configure LEVEL_2/3, dedicated bonding 8157 connection->state = SEND_CREATE_CONNECTION; 8158 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8159 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8160 connection->bonding_flags = BONDING_DEDICATED; 8161 8162 hci_run(); 8163 8164 return 0; 8165 } 8166 8167 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8168 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8169 if (connection == NULL){ 8170 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8171 } 8172 if (defer){ 8173 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8174 } else { 8175 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8176 // trigger disconnect 8177 hci_run(); 8178 } 8179 return ERROR_CODE_SUCCESS; 8180 } 8181 8182 void gap_set_local_name(const char * local_name){ 8183 hci_stack->local_name = local_name; 8184 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8185 // also update EIR if not set by user 8186 if (hci_stack->eir_data == NULL){ 8187 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8188 } 8189 hci_run(); 8190 } 8191 #endif 8192 8193 8194 #ifdef ENABLE_BLE 8195 8196 #ifdef ENABLE_LE_CENTRAL 8197 void gap_start_scan(void){ 8198 hci_stack->le_scanning_enabled = true; 8199 hci_run(); 8200 } 8201 8202 void gap_stop_scan(void){ 8203 hci_stack->le_scanning_enabled = false; 8204 hci_run(); 8205 } 8206 8207 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8208 hci_stack->le_scan_type = scan_type; 8209 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8210 hci_stack->le_scan_interval = scan_interval; 8211 hci_stack->le_scan_window = scan_window; 8212 hci_stack->le_scanning_param_update = true; 8213 hci_run(); 8214 } 8215 8216 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8217 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8218 } 8219 8220 void gap_set_scan_duplicate_filter(bool enabled){ 8221 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8222 } 8223 8224 void gap_set_scan_phys(uint8_t phys){ 8225 // LE Coded and LE 1M PHY 8226 hci_stack->le_scan_phys = phys & 0x05; 8227 } 8228 8229 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 8230 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8231 if (!conn){ 8232 // disallow if le connection is already outgoing 8233 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8234 log_error("le connection already active"); 8235 return ERROR_CODE_COMMAND_DISALLOWED; 8236 } 8237 8238 log_info("gap_connect: no connection exists yet, creating context"); 8239 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8240 if (!conn){ 8241 // notify client that alloc failed 8242 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 8243 log_info("gap_connect: failed to alloc hci_connection_t"); 8244 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 8245 } 8246 8247 // set le connecting state 8248 if (hci_is_le_connection_type(addr_type)){ 8249 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8250 } 8251 8252 conn->state = SEND_CREATE_CONNECTION; 8253 log_info("gap_connect: send create connection next"); 8254 hci_run(); 8255 return ERROR_CODE_SUCCESS; 8256 } 8257 8258 if (!hci_is_le_connection(conn) || 8259 (conn->state == SEND_CREATE_CONNECTION) || 8260 (conn->state == SENT_CREATE_CONNECTION)) { 8261 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 8262 log_error("gap_connect: classic connection or connect is already being created"); 8263 return GATT_CLIENT_IN_WRONG_STATE; 8264 } 8265 8266 // check if connection was just disconnected 8267 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8268 log_info("gap_connect: send create connection (again)"); 8269 conn->state = SEND_CREATE_CONNECTION; 8270 hci_run(); 8271 return ERROR_CODE_SUCCESS; 8272 } 8273 8274 log_info("gap_connect: context exists with state %u", conn->state); 8275 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 8276 hci_run(); 8277 return ERROR_CODE_SUCCESS; 8278 } 8279 8280 // @assumption: only a single outgoing LE Connection exists 8281 static hci_connection_t * gap_get_outgoing_connection(void){ 8282 btstack_linked_item_t *it; 8283 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8284 hci_connection_t * conn = (hci_connection_t *) it; 8285 if (!hci_is_le_connection(conn)) continue; 8286 switch (conn->state){ 8287 case SEND_CREATE_CONNECTION: 8288 case SENT_CREATE_CONNECTION: 8289 return conn; 8290 default: 8291 break; 8292 }; 8293 } 8294 return NULL; 8295 } 8296 8297 uint8_t gap_connect_cancel(void){ 8298 hci_connection_t * conn; 8299 switch (hci_stack->le_connecting_request){ 8300 case LE_CONNECTING_IDLE: 8301 break; 8302 case LE_CONNECTING_WHITELIST: 8303 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8304 hci_run(); 8305 break; 8306 case LE_CONNECTING_DIRECT: 8307 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8308 conn = gap_get_outgoing_connection(); 8309 if (conn == NULL){ 8310 hci_run(); 8311 } else { 8312 switch (conn->state){ 8313 case SEND_CREATE_CONNECTION: 8314 // skip sending create connection and emit event instead 8315 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8316 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8317 btstack_memory_hci_connection_free( conn ); 8318 break; 8319 case SENT_CREATE_CONNECTION: 8320 // let hci_run_general_gap_le cancel outgoing connection 8321 hci_run(); 8322 break; 8323 default: 8324 break; 8325 } 8326 } 8327 break; 8328 default: 8329 btstack_unreachable(); 8330 break; 8331 } 8332 return ERROR_CODE_SUCCESS; 8333 } 8334 8335 /** 8336 * @brief Set connection parameters for outgoing connections 8337 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8338 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8339 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8340 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8341 * @param conn_latency, default: 4 8342 * @param supervision_timeout (unit: 10ms), default: 720 ms 8343 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8344 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8345 */ 8346 8347 void gap_set_connection_phys(uint8_t phys){ 8348 // LE Coded, LE 1M, LE 2M PHY 8349 hci_stack->le_connection_phys = phys & 7; 8350 } 8351 8352 #endif 8353 8354 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8355 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8356 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8357 hci_stack->le_connection_scan_interval = conn_scan_interval; 8358 hci_stack->le_connection_scan_window = conn_scan_window; 8359 hci_stack->le_connection_interval_min = conn_interval_min; 8360 hci_stack->le_connection_interval_max = conn_interval_max; 8361 hci_stack->le_connection_latency = conn_latency; 8362 hci_stack->le_supervision_timeout = supervision_timeout; 8363 hci_stack->le_minimum_ce_length = min_ce_length; 8364 hci_stack->le_maximum_ce_length = max_ce_length; 8365 } 8366 8367 /** 8368 * @brief Updates the connection parameters for a given LE connection 8369 * @param handle 8370 * @param conn_interval_min (unit: 1.25ms) 8371 * @param conn_interval_max (unit: 1.25ms) 8372 * @param conn_latency 8373 * @param supervision_timeout (unit: 10ms) 8374 * @return 0 if ok 8375 */ 8376 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8377 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8378 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8379 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8380 connection->le_conn_interval_min = conn_interval_min; 8381 connection->le_conn_interval_max = conn_interval_max; 8382 connection->le_conn_latency = conn_latency; 8383 connection->le_supervision_timeout = supervision_timeout; 8384 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8385 hci_run(); 8386 return 0; 8387 } 8388 8389 /** 8390 * @brief Request an update of the connection parameter for a given LE connection 8391 * @param handle 8392 * @param conn_interval_min (unit: 1.25ms) 8393 * @param conn_interval_max (unit: 1.25ms) 8394 * @param conn_latency 8395 * @param supervision_timeout (unit: 10ms) 8396 * @return 0 if ok 8397 */ 8398 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8399 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8400 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8401 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8402 connection->le_conn_interval_min = conn_interval_min; 8403 connection->le_conn_interval_max = conn_interval_max; 8404 connection->le_conn_latency = conn_latency; 8405 connection->le_supervision_timeout = supervision_timeout; 8406 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8407 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8408 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8409 return 0; 8410 } 8411 8412 #ifdef ENABLE_LE_PERIPHERAL 8413 8414 /** 8415 * @brief Set Advertisement Data 8416 * @param advertising_data_length 8417 * @param advertising_data (max 31 octets) 8418 * @note data is not copied, pointer has to stay valid 8419 */ 8420 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8421 hci_stack->le_advertisements_data_len = advertising_data_length; 8422 hci_stack->le_advertisements_data = advertising_data; 8423 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8424 hci_run(); 8425 } 8426 8427 /** 8428 * @brief Set Scan Response Data 8429 * @param advertising_data_length 8430 * @param advertising_data (max 31 octets) 8431 * @note data is not copied, pointer has to stay valid 8432 */ 8433 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8434 hci_stack->le_scan_response_data_len = scan_response_data_length; 8435 hci_stack->le_scan_response_data = scan_response_data; 8436 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8437 hci_run(); 8438 } 8439 8440 /** 8441 * @brief Set Advertisement Parameters 8442 * @param adv_int_min 8443 * @param adv_int_max 8444 * @param adv_type 8445 * @param direct_address_type 8446 * @param direct_address 8447 * @param channel_map 8448 * @param filter_policy 8449 * 8450 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8451 */ 8452 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8453 uint8_t direct_address_typ, bd_addr_t direct_address, 8454 uint8_t channel_map, uint8_t filter_policy) { 8455 8456 hci_stack->le_advertisements_interval_min = adv_int_min; 8457 hci_stack->le_advertisements_interval_max = adv_int_max; 8458 hci_stack->le_advertisements_type = adv_type; 8459 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8460 hci_stack->le_advertisements_channel_map = channel_map; 8461 hci_stack->le_advertisements_filter_policy = filter_policy; 8462 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8463 6); 8464 8465 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8466 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8467 hci_run(); 8468 } 8469 8470 /** 8471 * @brief Enable/Disable Advertisements 8472 * @param enabled 8473 */ 8474 void gap_advertisements_enable(int enabled){ 8475 if (enabled == 0){ 8476 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8477 } else { 8478 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8479 } 8480 hci_update_advertisements_enabled_for_current_roles(); 8481 hci_run(); 8482 } 8483 8484 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8485 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8486 btstack_linked_list_iterator_t it; 8487 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8488 while (btstack_linked_list_iterator_has_next(&it)){ 8489 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8490 if ( item->advertising_handle == advertising_handle ) { 8491 return item; 8492 } 8493 } 8494 return NULL; 8495 } 8496 8497 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8498 hci_stack->le_resolvable_private_address_update_s = update_s; 8499 hci_run(); 8500 return ERROR_CODE_SUCCESS; 8501 } 8502 8503 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8504 // find free advertisement handle 8505 uint8_t advertisement_handle; 8506 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8507 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8508 } 8509 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8510 // clear 8511 memset(storage, 0, sizeof(le_advertising_set_t)); 8512 // copy params 8513 storage->advertising_handle = advertisement_handle; 8514 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8515 // add to list 8516 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8517 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8518 *out_advertising_handle = advertisement_handle; 8519 // set tasks and start 8520 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8521 hci_run(); 8522 return ERROR_CODE_SUCCESS; 8523 } 8524 8525 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8526 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8527 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8528 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8529 // set tasks and start 8530 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8531 hci_run(); 8532 return ERROR_CODE_SUCCESS; 8533 } 8534 8535 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8536 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8537 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8538 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8539 return ERROR_CODE_SUCCESS; 8540 } 8541 8542 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8543 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8544 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8545 memcpy(advertising_set->random_address, random_address, 6); 8546 // set tasks and start 8547 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8548 hci_run(); 8549 return ERROR_CODE_SUCCESS; 8550 } 8551 8552 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8553 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8554 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8555 advertising_set->adv_data = advertising_data; 8556 advertising_set->adv_data_len = advertising_data_length; 8557 // set tasks and start 8558 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8559 hci_run(); 8560 return ERROR_CODE_SUCCESS; 8561 } 8562 8563 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){ 8564 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8565 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8566 advertising_set->scan_data = scan_response_data; 8567 advertising_set->scan_data_len = scan_response_data_length; 8568 // set tasks and start 8569 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8570 hci_run(); 8571 return ERROR_CODE_SUCCESS; 8572 } 8573 8574 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8575 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8576 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8577 advertising_set->enable_timeout = timeout; 8578 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8579 // set tasks and start 8580 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8581 hci_run(); 8582 return ERROR_CODE_SUCCESS; 8583 } 8584 8585 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8586 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8587 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8588 // set tasks and start 8589 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8590 hci_run(); 8591 return ERROR_CODE_SUCCESS; 8592 } 8593 8594 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8595 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8596 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8597 // set tasks and start 8598 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8599 hci_run(); 8600 return ERROR_CODE_SUCCESS; 8601 } 8602 8603 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8604 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8605 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8606 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8607 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8608 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8609 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8610 // set tasks and start 8611 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8612 hci_run(); 8613 return ERROR_CODE_SUCCESS; 8614 } 8615 8616 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8617 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8618 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8619 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8620 return ERROR_CODE_SUCCESS; 8621 } 8622 8623 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8624 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8625 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8626 advertising_set->periodic_data = periodic_data; 8627 advertising_set->periodic_data_len = periodic_data_length; 8628 // set tasks and start 8629 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8630 hci_run(); 8631 return ERROR_CODE_SUCCESS; 8632 } 8633 8634 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8635 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8636 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8637 // set tasks and start 8638 advertising_set->periodic_include_adi = include_adi; 8639 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8640 hci_run(); 8641 return ERROR_CODE_SUCCESS; 8642 } 8643 8644 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8645 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8646 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8647 // set tasks and start 8648 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8649 hci_run(); 8650 return ERROR_CODE_SUCCESS; 8651 } 8652 8653 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8654 hci_stack->le_past_mode = mode; 8655 hci_stack->le_past_skip = skip; 8656 hci_stack->le_past_sync_timeout = sync_timeout; 8657 hci_stack->le_past_cte_type = cte_type; 8658 hci_stack->le_past_set_default_params = true; 8659 hci_run(); 8660 return ERROR_CODE_SUCCESS; 8661 } 8662 8663 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8664 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8665 if (hci_connection == NULL){ 8666 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8667 } 8668 hci_connection->le_past_sync_handle = sync_handle; 8669 hci_connection->le_past_service_data = service_data; 8670 hci_run(); 8671 return ERROR_CODE_SUCCESS; 8672 } 8673 8674 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8675 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8676 if (hci_connection == NULL){ 8677 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8678 } 8679 hci_connection->le_past_advertising_handle = advertising_handle; 8680 hci_connection->le_past_service_data = service_data; 8681 hci_run(); 8682 return ERROR_CODE_SUCCESS; 8683 } 8684 8685 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8686 8687 #endif 8688 8689 #endif 8690 8691 void hci_le_set_own_address_type(uint8_t own_address_type){ 8692 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8693 if (own_address_type == hci_stack->le_own_addr_type) return; 8694 hci_stack->le_own_addr_type = own_address_type; 8695 8696 #ifdef ENABLE_LE_PERIPHERAL 8697 // update advertisement parameters, too 8698 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8699 hci_run(); 8700 #endif 8701 #ifdef ENABLE_LE_CENTRAL 8702 // note: we don't update scan parameters or modify ongoing connection attempts 8703 #endif 8704 } 8705 8706 void hci_le_random_address_set(const bd_addr_t random_address){ 8707 memcpy(hci_stack->le_random_address, random_address, 6); 8708 hci_stack->le_random_address_set = true; 8709 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8710 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8711 if (hci_extended_advertising_supported()){ 8712 // force advertising set creation for LE Set Advertising Set Random Address 8713 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8714 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8715 } 8716 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8717 } 8718 #endif 8719 hci_run(); 8720 } 8721 8722 #endif 8723 8724 uint8_t gap_disconnect(hci_con_handle_t handle){ 8725 hci_connection_t * conn = hci_connection_for_handle(handle); 8726 if (!conn){ 8727 hci_emit_disconnection_complete(handle, 0); 8728 return 0; 8729 } 8730 // ignore if already disconnected 8731 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8732 return 0; 8733 } 8734 conn->state = SEND_DISCONNECT; 8735 hci_run(); 8736 return 0; 8737 } 8738 8739 int gap_read_rssi(hci_con_handle_t con_handle){ 8740 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8741 if (hci_connection == NULL) return 0; 8742 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8743 hci_run(); 8744 return 1; 8745 } 8746 8747 /** 8748 * @brief Get connection type 8749 * @param con_handle 8750 * @result connection_type 8751 */ 8752 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8753 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8754 if (!conn) return GAP_CONNECTION_INVALID; 8755 switch (conn->address_type){ 8756 case BD_ADDR_TYPE_LE_PUBLIC: 8757 case BD_ADDR_TYPE_LE_RANDOM: 8758 return GAP_CONNECTION_LE; 8759 case BD_ADDR_TYPE_SCO: 8760 return GAP_CONNECTION_SCO; 8761 case BD_ADDR_TYPE_ACL: 8762 return GAP_CONNECTION_ACL; 8763 default: 8764 return GAP_CONNECTION_INVALID; 8765 } 8766 } 8767 8768 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8769 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8770 if (!conn) return HCI_ROLE_INVALID; 8771 return (hci_role_t) conn->role; 8772 } 8773 8774 8775 #ifdef ENABLE_CLASSIC 8776 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8777 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8778 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8779 conn->request_role = role; 8780 hci_run(); 8781 return ERROR_CODE_SUCCESS; 8782 } 8783 #endif 8784 8785 #ifdef ENABLE_BLE 8786 8787 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){ 8788 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8789 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8790 8791 conn->le_phy_update_all_phys = all_phys; 8792 conn->le_phy_update_tx_phys = tx_phys; 8793 conn->le_phy_update_rx_phys = rx_phys; 8794 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8795 8796 hci_run(); 8797 8798 return 0; 8799 } 8800 8801 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8802 // check if already in list 8803 btstack_linked_list_iterator_t it; 8804 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8805 while (btstack_linked_list_iterator_has_next(&it)) { 8806 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8807 if (entry->address_type != address_type) { 8808 continue; 8809 } 8810 if (memcmp(entry->address, address, 6) != 0) { 8811 continue; 8812 } 8813 8814 // if already on controller: 8815 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 8816 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 8817 // drop remove request 8818 entry->state = LE_WHITELIST_ON_CONTROLLER; 8819 return ERROR_CODE_SUCCESS; 8820 } else { 8821 // disallow as already on controller 8822 return ERROR_CODE_COMMAND_DISALLOWED; 8823 } 8824 } 8825 8826 // assume scheduled to add 8827 return ERROR_CODE_COMMAND_DISALLOWED; 8828 } 8829 8830 // alloc and add to list 8831 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8832 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8833 entry->address_type = address_type; 8834 (void)memcpy(entry->address, address, 6); 8835 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8836 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8837 return ERROR_CODE_SUCCESS; 8838 } 8839 8840 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8841 btstack_linked_list_iterator_t it; 8842 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8843 while (btstack_linked_list_iterator_has_next(&it)){ 8844 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8845 if (entry->address_type != address_type) { 8846 continue; 8847 } 8848 if (memcmp(entry->address, address, 6) != 0) { 8849 continue; 8850 } 8851 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8852 // remove from controller if already present 8853 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8854 } else { 8855 // directly remove entry from whitelist 8856 btstack_linked_list_iterator_remove(&it); 8857 btstack_memory_whitelist_entry_free(entry); 8858 } 8859 return ERROR_CODE_SUCCESS; 8860 } 8861 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8862 } 8863 8864 static void hci_whitelist_clear(void){ 8865 btstack_linked_list_iterator_t it; 8866 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8867 while (btstack_linked_list_iterator_has_next(&it)){ 8868 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8869 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8870 // remove from controller if already present 8871 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8872 continue; 8873 } 8874 // directly remove entry from whitelist 8875 btstack_linked_list_iterator_remove(&it); 8876 btstack_memory_whitelist_entry_free(entry); 8877 } 8878 } 8879 8880 /** 8881 * @brief Clear Whitelist 8882 * @return 0 if ok 8883 */ 8884 uint8_t gap_whitelist_clear(void){ 8885 hci_whitelist_clear(); 8886 hci_run(); 8887 return ERROR_CODE_SUCCESS; 8888 } 8889 8890 /** 8891 * @brief Add Device to Whitelist 8892 * @param address_typ 8893 * @param address 8894 * @return 0 if ok 8895 */ 8896 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8897 uint8_t status = hci_whitelist_add(address_type, address); 8898 if (status){ 8899 return status; 8900 } 8901 hci_run(); 8902 return ERROR_CODE_SUCCESS; 8903 } 8904 8905 /** 8906 * @brief Remove Device from Whitelist 8907 * @param address_typ 8908 * @param address 8909 * @return 0 if ok 8910 */ 8911 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8912 uint8_t status = hci_whitelist_remove(address_type, address); 8913 if (status){ 8914 return status; 8915 } 8916 hci_run(); 8917 return ERROR_CODE_SUCCESS; 8918 } 8919 8920 #ifdef ENABLE_LE_CENTRAL 8921 /** 8922 * @brief Connect with Whitelist 8923 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8924 * @return - if ok 8925 */ 8926 uint8_t gap_connect_with_whitelist(void){ 8927 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8928 return ERROR_CODE_COMMAND_DISALLOWED; 8929 } 8930 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8931 hci_run(); 8932 return ERROR_CODE_SUCCESS; 8933 } 8934 8935 /** 8936 * @brief Auto Connection Establishment - Start Connecting to device 8937 * @param address_typ 8938 * @param address 8939 * @return 0 if ok 8940 */ 8941 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8942 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8943 return ERROR_CODE_COMMAND_DISALLOWED; 8944 } 8945 8946 uint8_t status = hci_whitelist_add(address_type, address); 8947 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8948 return status; 8949 } 8950 8951 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8952 8953 hci_run(); 8954 return ERROR_CODE_SUCCESS; 8955 } 8956 8957 /** 8958 * @brief Auto Connection Establishment - Stop Connecting to device 8959 * @param address_typ 8960 * @param address 8961 * @return 0 if ok 8962 */ 8963 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8964 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8965 return ERROR_CODE_COMMAND_DISALLOWED; 8966 } 8967 8968 hci_whitelist_remove(address_type, address); 8969 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8970 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8971 } 8972 hci_run(); 8973 return 0; 8974 } 8975 8976 /** 8977 * @brief Auto Connection Establishment - Stop everything 8978 * @note Convenience function to stop all active auto connection attempts 8979 */ 8980 uint8_t gap_auto_connection_stop_all(void){ 8981 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8982 return ERROR_CODE_COMMAND_DISALLOWED; 8983 } 8984 hci_whitelist_clear(); 8985 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8986 hci_run(); 8987 return ERROR_CODE_SUCCESS; 8988 } 8989 8990 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8991 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8992 if (!conn) return 0; 8993 return conn->le_connection_interval; 8994 } 8995 #endif 8996 #endif 8997 8998 #ifdef ENABLE_CLASSIC 8999 /** 9000 * @brief Set Extended Inquiry Response data 9001 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9002 * @note has to be done before stack starts up 9003 */ 9004 void gap_set_extended_inquiry_response(const uint8_t * data){ 9005 hci_stack->eir_data = data; 9006 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9007 hci_run(); 9008 } 9009 9010 /** 9011 * @brief Start GAP Classic Inquiry 9012 * @param duration in 1.28s units 9013 * @return 0 if ok 9014 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9015 */ 9016 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9017 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9018 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9019 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9020 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9021 } 9022 hci_stack->inquiry_state = duration_in_1280ms_units; 9023 hci_stack->inquiry_max_period_length = 0; 9024 hci_stack->inquiry_min_period_length = 0; 9025 hci_run(); 9026 return 0; 9027 } 9028 9029 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9030 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9031 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9032 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9033 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9034 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9035 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9036 9037 hci_stack->inquiry_state = duration; 9038 hci_stack->inquiry_max_period_length = max_period_length; 9039 hci_stack->inquiry_min_period_length = min_period_length; 9040 hci_run(); 9041 return 0; 9042 } 9043 9044 /** 9045 * @brief Stop GAP Classic Inquiry 9046 * @return 0 if ok 9047 */ 9048 int gap_inquiry_stop(void){ 9049 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9050 // emit inquiry complete event, before it even started 9051 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9052 hci_emit_event(event, sizeof(event), 1); 9053 return 0; 9054 } 9055 switch (hci_stack->inquiry_state){ 9056 case GAP_INQUIRY_STATE_ACTIVE: 9057 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9058 hci_run(); 9059 return ERROR_CODE_SUCCESS; 9060 case GAP_INQUIRY_STATE_PERIODIC: 9061 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9062 hci_run(); 9063 return ERROR_CODE_SUCCESS; 9064 default: 9065 return ERROR_CODE_COMMAND_DISALLOWED; 9066 } 9067 } 9068 9069 void gap_inquiry_set_lap(uint32_t lap){ 9070 hci_stack->inquiry_lap = lap; 9071 } 9072 9073 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9074 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9075 hci_stack->inquiry_scan_window = inquiry_scan_window; 9076 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9077 hci_run(); 9078 } 9079 9080 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9081 { 9082 hci_stack->inquiry_tx_power_level = tx_power; 9083 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9084 hci_run(); 9085 } 9086 9087 9088 /** 9089 * @brief Remote Name Request 9090 * @param addr 9091 * @param page_scan_repetition_mode 9092 * @param clock_offset only used when bit 15 is set 9093 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9094 */ 9095 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9096 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9097 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9098 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9099 hci_stack->remote_name_clock_offset = clock_offset; 9100 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9101 hci_run(); 9102 return 0; 9103 } 9104 9105 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9106 hci_stack->gap_pairing_state = state; 9107 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9108 hci_run(); 9109 return 0; 9110 } 9111 9112 /** 9113 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9114 * @param addr 9115 * @param pin_data 9116 * @param pin_len 9117 * @return 0 if ok 9118 */ 9119 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9120 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9121 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9122 hci_stack->gap_pairing_pin_len = pin_len; 9123 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9124 } 9125 9126 /** 9127 * @brief Legacy Pairing Pin Code Response 9128 * @param addr 9129 * @param pin 9130 * @return 0 if ok 9131 */ 9132 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9133 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9134 } 9135 9136 /** 9137 * @brief Abort Legacy Pairing 9138 * @param addr 9139 * @param pin 9140 * @return 0 if ok 9141 */ 9142 int gap_pin_code_negative(bd_addr_t addr){ 9143 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9144 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9145 } 9146 9147 /** 9148 * @brief SSP Passkey Response 9149 * @param addr 9150 * @param passkey 9151 * @return 0 if ok 9152 */ 9153 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9154 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9155 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9156 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9157 } 9158 9159 /** 9160 * @brief Abort SSP Passkey Entry/Pairing 9161 * @param addr 9162 * @param pin 9163 * @return 0 if ok 9164 */ 9165 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9166 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9167 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9168 } 9169 9170 /** 9171 * @brief Accept SSP Numeric Comparison 9172 * @param addr 9173 * @param passkey 9174 * @return 0 if ok 9175 */ 9176 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9177 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9178 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9179 } 9180 9181 /** 9182 * @brief Abort SSP Numeric Comparison/Pairing 9183 * @param addr 9184 * @param pin 9185 * @return 0 if ok 9186 */ 9187 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9188 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9189 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9190 } 9191 9192 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9193 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9194 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9195 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9196 connectionSetAuthenticationFlags(conn, flag); 9197 hci_run(); 9198 return ERROR_CODE_SUCCESS; 9199 } 9200 #endif 9201 9202 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9203 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9204 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9205 } 9206 9207 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9208 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9209 } 9210 #endif 9211 9212 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9213 /** 9214 * @brief Report Remote OOB Data 9215 * @param bd_addr 9216 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9217 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9218 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9219 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9220 */ 9221 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){ 9222 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9223 if (connection == NULL) { 9224 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9225 } 9226 connection->classic_oob_c_192 = c_192; 9227 connection->classic_oob_r_192 = r_192; 9228 9229 // ignore P-256 if not supported by us 9230 if (hci_stack->secure_connections_active){ 9231 connection->classic_oob_c_256 = c_256; 9232 connection->classic_oob_r_256 = r_256; 9233 } 9234 9235 return ERROR_CODE_SUCCESS; 9236 } 9237 /** 9238 * @brief Generate new OOB data 9239 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9240 */ 9241 void gap_ssp_generate_oob_data(void){ 9242 hci_stack->classic_read_local_oob_data = true; 9243 hci_run(); 9244 } 9245 9246 #endif 9247 9248 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9249 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9250 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9251 if (connection == NULL) { 9252 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9253 } 9254 9255 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9256 connection->link_key_type = type; 9257 9258 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9259 } 9260 9261 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9262 /** 9263 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9264 * @param inquiry_mode see bluetooth_defines.h 9265 */ 9266 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9267 hci_stack->inquiry_mode = inquiry_mode; 9268 } 9269 9270 /** 9271 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9272 */ 9273 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9274 hci_stack->sco_voice_setting = voice_setting; 9275 } 9276 9277 /** 9278 * @brief Get SCO Voice Setting 9279 * @return current voice setting 9280 */ 9281 uint16_t hci_get_sco_voice_setting(void){ 9282 return hci_stack->sco_voice_setting; 9283 } 9284 9285 static int hci_have_usb_transport(void){ 9286 if (!hci_stack->hci_transport) return 0; 9287 const char * transport_name = hci_stack->hci_transport->name; 9288 if (!transport_name) return 0; 9289 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9290 } 9291 9292 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9293 uint16_t sco_packet_length = 0; 9294 9295 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9296 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9297 int multiplier; 9298 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9299 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9300 multiplier = 2; 9301 } else { 9302 multiplier = 1; 9303 } 9304 #endif 9305 9306 #ifdef ENABLE_SCO_OVER_HCI 9307 if (hci_have_usb_transport()){ 9308 // see Core Spec for H2 USB Transfer. 9309 // 3 byte SCO header + 24 bytes per connection 9310 // @note multiple sco connections not supported currently 9311 sco_packet_length = 3 + 24 * multiplier; 9312 } else { 9313 // 3 byte SCO header + SCO packet length over the air 9314 sco_packet_length = 3 + payload_size * multiplier; 9315 // assert that it still fits inside an SCO buffer 9316 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9317 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9318 } 9319 } 9320 #endif 9321 #ifdef HAVE_SCO_TRANSPORT 9322 // 3 byte SCO header + SCO packet length over the air 9323 sco_packet_length = 3 + payload_size * multiplier; 9324 // assert that it still fits inside an SCO buffer 9325 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9326 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9327 } 9328 #endif 9329 return sco_packet_length; 9330 } 9331 9332 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9333 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9334 if (connection != NULL){ 9335 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9336 } 9337 return 0; 9338 } 9339 9340 uint16_t hci_get_sco_packet_length(void){ 9341 btstack_linked_list_iterator_t it; 9342 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9343 while (btstack_linked_list_iterator_has_next(&it)){ 9344 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9345 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9346 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9347 } 9348 } 9349 return 0; 9350 } 9351 9352 /** 9353 * @brief Sets the master/slave policy 9354 * @param policy (0: attempt to become master, 1: let connecting device decide) 9355 */ 9356 void hci_set_master_slave_policy(uint8_t policy){ 9357 hci_stack->master_slave_policy = policy; 9358 } 9359 9360 #endif 9361 9362 HCI_STATE hci_get_state(void){ 9363 return hci_stack->state; 9364 } 9365 9366 #ifdef ENABLE_CLASSIC 9367 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9368 hci_stack->gap_classic_accept_callback = accept_callback; 9369 } 9370 #endif 9371 9372 /** 9373 * @brief Set callback for Bluetooth Hardware Error 9374 */ 9375 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9376 hci_stack->hardware_error_callback = fn; 9377 } 9378 9379 void hci_disconnect_all(void){ 9380 btstack_linked_list_iterator_t it; 9381 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9382 while (btstack_linked_list_iterator_has_next(&it)){ 9383 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9384 if (con->state == SENT_DISCONNECT) continue; 9385 con->state = SEND_DISCONNECT; 9386 } 9387 hci_run(); 9388 } 9389 9390 uint16_t hci_get_manufacturer(void){ 9391 return hci_stack->manufacturer; 9392 } 9393 9394 #ifdef ENABLE_BLE 9395 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9396 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9397 if (!hci_con) return NULL; 9398 return &hci_con->sm_connection; 9399 } 9400 9401 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9402 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9403 #endif 9404 9405 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9406 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9407 if (hci_connection == NULL) return 0; 9408 if (hci_is_le_connection(hci_connection)){ 9409 #ifdef ENABLE_BLE 9410 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9411 if (sm_conn->sm_connection_encrypted) { 9412 return sm_conn->sm_actual_encryption_key_size; 9413 } 9414 #endif 9415 } else { 9416 #ifdef ENABLE_CLASSIC 9417 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9418 return hci_connection->encryption_key_size; 9419 } 9420 #endif 9421 } 9422 return 0; 9423 } 9424 9425 bool gap_authenticated(hci_con_handle_t con_handle){ 9426 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9427 if (hci_connection == NULL) return false; 9428 9429 switch (hci_connection->address_type){ 9430 #ifdef ENABLE_BLE 9431 case BD_ADDR_TYPE_LE_PUBLIC: 9432 case BD_ADDR_TYPE_LE_RANDOM: 9433 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9434 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9435 #endif 9436 #ifdef ENABLE_CLASSIC 9437 case BD_ADDR_TYPE_SCO: 9438 case BD_ADDR_TYPE_ACL: 9439 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9440 #endif 9441 default: 9442 return false; 9443 } 9444 } 9445 9446 bool gap_secure_connection(hci_con_handle_t con_handle){ 9447 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9448 if (hci_connection == NULL) return 0; 9449 9450 switch (hci_connection->address_type){ 9451 #ifdef ENABLE_BLE 9452 case BD_ADDR_TYPE_LE_PUBLIC: 9453 case BD_ADDR_TYPE_LE_RANDOM: 9454 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9455 return hci_connection->sm_connection.sm_connection_sc != 0; 9456 #endif 9457 #ifdef ENABLE_CLASSIC 9458 case BD_ADDR_TYPE_SCO: 9459 case BD_ADDR_TYPE_ACL: 9460 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9461 #endif 9462 default: 9463 return false; 9464 } 9465 } 9466 9467 bool gap_bonded(hci_con_handle_t con_handle){ 9468 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9469 if (hci_connection == NULL) return 0; 9470 9471 #ifdef ENABLE_CLASSIC 9472 link_key_t link_key; 9473 link_key_type_t link_key_type; 9474 #endif 9475 switch (hci_connection->address_type){ 9476 #ifdef ENABLE_BLE 9477 case BD_ADDR_TYPE_LE_PUBLIC: 9478 case BD_ADDR_TYPE_LE_RANDOM: 9479 return hci_connection->sm_connection.sm_le_db_index >= 0; 9480 #endif 9481 #ifdef ENABLE_CLASSIC 9482 case BD_ADDR_TYPE_SCO: 9483 case BD_ADDR_TYPE_ACL: 9484 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9485 #endif 9486 default: 9487 return false; 9488 } 9489 } 9490 9491 #ifdef ENABLE_BLE 9492 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9493 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9494 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 9495 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9496 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9497 return sm_conn->sm_connection_authorization_state; 9498 } 9499 #endif 9500 9501 #ifdef ENABLE_CLASSIC 9502 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){ 9503 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9504 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9505 conn->sniff_min_interval = sniff_min_interval; 9506 conn->sniff_max_interval = sniff_max_interval; 9507 conn->sniff_attempt = sniff_attempt; 9508 conn->sniff_timeout = sniff_timeout; 9509 hci_run(); 9510 return 0; 9511 } 9512 9513 /** 9514 * @brief Exit Sniff mode 9515 * @param con_handle 9516 @ @return 0 if ok 9517 */ 9518 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9519 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9520 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9521 conn->sniff_min_interval = 0xffff; 9522 hci_run(); 9523 return 0; 9524 } 9525 9526 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){ 9527 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9528 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9529 conn->sniff_subrating_max_latency = max_latency; 9530 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9531 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9532 hci_run(); 9533 return ERROR_CODE_SUCCESS; 9534 } 9535 9536 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){ 9537 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9538 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9539 conn->qos_service_type = service_type; 9540 conn->qos_token_rate = token_rate; 9541 conn->qos_peak_bandwidth = peak_bandwidth; 9542 conn->qos_latency = latency; 9543 conn->qos_delay_variation = delay_variation; 9544 hci_run(); 9545 return ERROR_CODE_SUCCESS; 9546 } 9547 9548 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9549 hci_stack->new_page_scan_interval = page_scan_interval; 9550 hci_stack->new_page_scan_window = page_scan_window; 9551 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9552 hci_run(); 9553 } 9554 9555 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9556 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9557 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9558 hci_run(); 9559 } 9560 9561 void gap_set_page_timeout(uint16_t page_timeout){ 9562 hci_stack->page_timeout = page_timeout; 9563 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9564 hci_run(); 9565 } 9566 9567 #endif 9568 9569 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9570 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9571 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9572 if (le_device_db_index >= le_device_db_max_count()) return; 9573 uint8_t offset = le_device_db_index >> 3; 9574 uint8_t mask = 1 << (le_device_db_index & 7); 9575 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9576 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9577 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9578 // note: go back to remove entries, otherwise, a remove + add will skip the add 9579 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9580 } 9581 } 9582 9583 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9584 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9585 if (le_device_db_index >= le_device_db_max_count()) return; 9586 uint8_t offset = le_device_db_index >> 3; 9587 uint8_t mask = 1 << (le_device_db_index & 7); 9588 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9589 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9590 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9591 } 9592 } 9593 9594 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9595 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9596 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9597 } 9598 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9599 // restart le resolving list update 9600 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9601 } 9602 return ERROR_CODE_SUCCESS; 9603 } 9604 9605 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9606 hci_stack->le_privacy_mode = privacy_mode; 9607 } 9608 #endif 9609 9610 #ifdef ENABLE_BLE 9611 #ifdef ENABLE_LE_CENTRAL 9612 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9613 9614 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9615 // check if already in list 9616 btstack_linked_list_iterator_t it; 9617 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9618 while (btstack_linked_list_iterator_has_next(&it)) { 9619 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9620 if (entry->sid != advertising_sid) { 9621 continue; 9622 } 9623 if (entry->address_type != address_type) { 9624 continue; 9625 } 9626 if (memcmp(entry->address, address, 6) != 0) { 9627 continue; 9628 } 9629 // disallow if already scheduled to add 9630 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9631 return ERROR_CODE_COMMAND_DISALLOWED; 9632 } 9633 // still on controller, but scheduled to remove -> re-add 9634 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9635 return ERROR_CODE_SUCCESS; 9636 } 9637 // alloc and add to list 9638 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9639 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9640 entry->sid = advertising_sid; 9641 entry->address_type = address_type; 9642 (void)memcpy(entry->address, address, 6); 9643 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9644 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9645 return ERROR_CODE_SUCCESS; 9646 } 9647 9648 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9649 btstack_linked_list_iterator_t it; 9650 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9651 while (btstack_linked_list_iterator_has_next(&it)){ 9652 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9653 if (entry->sid != advertising_sid) { 9654 continue; 9655 } 9656 if (entry->address_type != address_type) { 9657 continue; 9658 } 9659 if (memcmp(entry->address, address, 6) != 0) { 9660 continue; 9661 } 9662 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9663 // remove from controller if already present 9664 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9665 } else { 9666 // directly remove entry from whitelist 9667 btstack_linked_list_iterator_remove(&it); 9668 btstack_memory_periodic_advertiser_list_entry_free(entry); 9669 } 9670 return ERROR_CODE_SUCCESS; 9671 } 9672 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9673 } 9674 9675 static void hci_periodic_advertiser_list_clear(void){ 9676 btstack_linked_list_iterator_t it; 9677 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9678 while (btstack_linked_list_iterator_has_next(&it)){ 9679 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9680 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9681 // remove from controller if already present 9682 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9683 continue; 9684 } 9685 // directly remove entry from whitelist 9686 btstack_linked_list_iterator_remove(&it); 9687 btstack_memory_periodic_advertiser_list_entry_free(entry); 9688 } 9689 } 9690 9691 uint8_t gap_periodic_advertiser_list_clear(void){ 9692 hci_periodic_advertiser_list_clear(); 9693 hci_run(); 9694 return ERROR_CODE_SUCCESS; 9695 } 9696 9697 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9698 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9699 if (status){ 9700 return status; 9701 } 9702 hci_run(); 9703 return ERROR_CODE_SUCCESS; 9704 } 9705 9706 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9707 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9708 if (status){ 9709 return status; 9710 } 9711 hci_run(); 9712 return ERROR_CODE_SUCCESS; 9713 } 9714 9715 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9716 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9717 // abort if already active 9718 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9719 return ERROR_CODE_COMMAND_DISALLOWED; 9720 } 9721 // store request 9722 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9723 hci_stack->le_periodic_sync_options = options; 9724 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9725 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9726 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9727 hci_stack->le_periodic_sync_skip = skip; 9728 hci_stack->le_periodic_sync_timeout = sync_timeout; 9729 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9730 9731 hci_run(); 9732 return ERROR_CODE_SUCCESS; 9733 } 9734 9735 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9736 // abort if not requested 9737 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9738 return ERROR_CODE_COMMAND_DISALLOWED; 9739 } 9740 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9741 hci_run(); 9742 return ERROR_CODE_SUCCESS; 9743 } 9744 9745 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9746 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9747 return ERROR_CODE_COMMAND_DISALLOWED; 9748 } 9749 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9750 hci_run(); 9751 return ERROR_CODE_SUCCESS; 9752 } 9753 9754 #endif 9755 #endif 9756 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9757 static hci_iso_stream_t * 9758 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9759 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9760 if (iso_stream != NULL){ 9761 iso_stream->iso_type = iso_type; 9762 iso_stream->state = state; 9763 iso_stream->group_id = group_id; 9764 iso_stream->stream_id = stream_id; 9765 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9766 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9767 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9768 } 9769 return iso_stream; 9770 } 9771 9772 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9773 btstack_linked_list_iterator_t it; 9774 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9775 while (btstack_linked_list_iterator_has_next(&it)){ 9776 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9777 if (iso_stream->cis_handle == con_handle ) { 9778 return iso_stream; 9779 } 9780 } 9781 return NULL; 9782 } 9783 9784 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9785 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 9786 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9787 btstack_memory_hci_iso_stream_free(iso_stream); 9788 } 9789 9790 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9791 btstack_linked_list_iterator_t it; 9792 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9793 while (btstack_linked_list_iterator_has_next(&it)){ 9794 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9795 if ((iso_stream->group_id == group_id) && 9796 (iso_stream->iso_type == iso_type)){ 9797 btstack_linked_list_iterator_remove(&it); 9798 btstack_memory_hci_iso_stream_free(iso_stream); 9799 } 9800 } 9801 } 9802 9803 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9804 btstack_linked_list_iterator_t it; 9805 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9806 while (btstack_linked_list_iterator_has_next(&it)){ 9807 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9808 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9809 (iso_stream->group_id == group_id)){ 9810 btstack_linked_list_iterator_remove(&it); 9811 btstack_memory_hci_iso_stream_free(iso_stream); 9812 } 9813 } 9814 } 9815 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9816 btstack_linked_list_iterator_t it; 9817 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9818 while (btstack_linked_list_iterator_has_next(&it)){ 9819 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9820 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9821 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9822 } 9823 } 9824 } 9825 9826 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9827 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9828 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9829 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9830 return (sdu_len_offset + 2 + sdu_len) == size; 9831 } 9832 9833 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9834 if (hci_stack->iso_packet_handler == NULL) { 9835 return; 9836 } 9837 if (size < 4) { 9838 return; 9839 } 9840 9841 // parse header 9842 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9843 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9844 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9845 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9846 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9847 9848 // assert packet is complete 9849 if ((iso_data_len + 4u) != size){ 9850 return; 9851 } 9852 9853 if ((pb_flag & 0x01) == 0){ 9854 if (pb_flag == 0x02){ 9855 // The ISO_Data_Load field contains a header and a complete SDU. 9856 if (hci_iso_sdu_complete(packet, size)) { 9857 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9858 } 9859 } else { 9860 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9861 if (iso_stream == NULL){ 9862 return; 9863 } 9864 if (size > HCI_ISO_PAYLOAD_SIZE){ 9865 return; 9866 } 9867 memcpy(iso_stream->reassembly_buffer, packet, size); 9868 // fix pb_flag 9869 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9870 iso_stream->reassembly_pos = size; 9871 } 9872 } else { 9873 // iso_data_load contains continuation or last fragment of an SDU 9874 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9875 if (ts_flag != 0){ 9876 return; 9877 } 9878 // append fragment 9879 if (iso_stream == NULL){ 9880 return; 9881 } 9882 if (iso_stream->reassembly_pos == 0){ 9883 return; 9884 } 9885 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9886 // reset reassembly buffer 9887 iso_stream->reassembly_pos = 0; 9888 return; 9889 } 9890 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9891 iso_stream->reassembly_pos += iso_data_len; 9892 9893 // deliver if last fragment and SDU complete 9894 if (pb_flag == 0x03){ 9895 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9896 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9897 } 9898 iso_stream->reassembly_pos = 0; 9899 } 9900 } 9901 } 9902 9903 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9904 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9905 uint16_t pos = 0; 9906 event[pos++] = HCI_EVENT_META_GAP; 9907 event[pos++] = 4 + (2 * big->num_bis); 9908 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9909 event[pos++] = status; 9910 event[pos++] = big->big_handle; 9911 event[pos++] = big->num_bis; 9912 uint8_t i; 9913 for (i=0;i<big->num_bis;i++){ 9914 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9915 pos += 2; 9916 } 9917 hci_emit_event(event, pos, 0); 9918 } 9919 9920 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9921 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9922 uint16_t pos = 0; 9923 event[pos++] = HCI_EVENT_META_GAP; 9924 event[pos++] = 4 + (2 * cig->num_cis); 9925 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9926 event[pos++] = status; 9927 event[pos++] = cig->cig_id; 9928 event[pos++] = cig->num_cis; 9929 uint8_t i; 9930 for (i=0;i<cig->num_cis;i++){ 9931 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9932 pos += 2; 9933 } 9934 hci_emit_event(event, pos, 0); 9935 } 9936 9937 static void hci_emit_cis_created(uint8_t status, uint8_t cig_id, uint8_t cis_id, hci_con_handle_t cis_con_handle, 9938 hci_con_handle_t acl_con_handle) { 9939 uint8_t event [10]; 9940 uint16_t pos = 0; 9941 event[pos++] = HCI_EVENT_META_GAP; 9942 event[pos++] = 8; 9943 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9944 event[pos++] = status; 9945 event[pos++] = cig_id; 9946 event[pos++] = cis_id; 9947 little_endian_store_16(event, pos, cis_con_handle); 9948 pos += 2; 9949 little_endian_store_16(event, pos, acl_con_handle); 9950 pos += 2; 9951 hci_emit_event(event, pos, 0); 9952 } 9953 9954 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 9955 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 9956 // cache data before finalizing struct 9957 uint8_t cig_id = iso_stream->group_id; 9958 uint8_t cis_id = iso_stream->stream_id; 9959 hci_con_handle_t cis_handle = iso_stream->cis_handle; 9960 hci_con_handle_t acl_handle = iso_stream->acl_handle; 9961 if (status != ERROR_CODE_SUCCESS){ 9962 hci_iso_stream_finalize(iso_stream); 9963 } 9964 hci_emit_cis_created(status, cig_id, cis_id, cis_handle, acl_handle); 9965 } 9966 9967 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9968 uint8_t event [4]; 9969 uint16_t pos = 0; 9970 event[pos++] = HCI_EVENT_META_GAP; 9971 event[pos++] = 2; 9972 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9973 event[pos++] = big->big_handle; 9974 hci_emit_event(event, pos, 0); 9975 } 9976 9977 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9978 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9979 uint16_t pos = 0; 9980 event[pos++] = HCI_EVENT_META_GAP; 9981 event[pos++] = 4; 9982 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9983 event[pos++] = status; 9984 event[pos++] = big_sync->big_handle; 9985 event[pos++] = big_sync->num_bis; 9986 uint8_t i; 9987 for (i=0;i<big_sync->num_bis;i++){ 9988 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9989 pos += 2; 9990 } 9991 hci_emit_event(event, pos, 0); 9992 } 9993 9994 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9995 uint8_t event [4]; 9996 uint16_t pos = 0; 9997 event[pos++] = HCI_EVENT_META_GAP; 9998 event[pos++] = 2; 9999 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10000 event[pos++] = big_handle; 10001 hci_emit_event(event, pos, 0); 10002 } 10003 10004 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10005 uint8_t event[6]; 10006 uint16_t pos = 0; 10007 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10008 event[pos++] = sizeof(event) - 2; 10009 event[pos++] = big->big_handle; 10010 event[pos++] = bis_index; 10011 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10012 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10013 } 10014 10015 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10016 uint8_t event[4]; 10017 uint16_t pos = 0; 10018 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10019 event[pos++] = sizeof(event) - 2; 10020 little_endian_store_16(event, pos, cis_con_handle); 10021 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10022 } 10023 10024 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10025 btstack_linked_list_iterator_t it; 10026 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10027 while (btstack_linked_list_iterator_has_next(&it)){ 10028 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10029 if ( big->big_handle == big_handle ) { 10030 return big; 10031 } 10032 } 10033 return NULL; 10034 } 10035 10036 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10037 btstack_linked_list_iterator_t it; 10038 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10039 while (btstack_linked_list_iterator_has_next(&it)){ 10040 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10041 if ( big_sync->big_handle == big_handle ) { 10042 return big_sync; 10043 } 10044 } 10045 return NULL; 10046 } 10047 10048 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10049 hci_stack->iso_packets_to_queue = num_packets; 10050 } 10051 10052 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10053 btstack_linked_list_iterator_t it; 10054 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10055 while (btstack_linked_list_iterator_has_next(&it)){ 10056 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10057 if ( cig->cig_id == cig_id ) { 10058 return cig; 10059 } 10060 } 10061 return NULL; 10062 } 10063 10064 static void hci_iso_notify_can_send_now(void){ 10065 10066 // BIG 10067 10068 btstack_linked_list_iterator_t it; 10069 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10070 while (btstack_linked_list_iterator_has_next(&it)){ 10071 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10072 // track number completed packet timestamps 10073 if (big->num_completed_timestamp_current_valid){ 10074 big->num_completed_timestamp_current_valid = false; 10075 if (big->num_completed_timestamp_previous_valid){ 10076 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10077 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10078 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10079 big->num_completed_timestamp_previous_ms); 10080 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10081 // to catch up, skip packet on all BIS 10082 uint8_t i; 10083 for (i=0;i<big->num_bis;i++){ 10084 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10085 if (iso_stream){ 10086 iso_stream->num_packets_to_skip++; 10087 } 10088 } 10089 } 10090 } 10091 big->num_completed_timestamp_previous_valid = true; 10092 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10093 } 10094 10095 if (big->can_send_now_requested){ 10096 // check if no outgoing iso packets pending and no can send now have to be emitted 10097 uint8_t i; 10098 bool can_send = true; 10099 uint8_t num_iso_queued_minimum = 0; 10100 for (i=0;i<big->num_bis;i++){ 10101 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10102 if (iso_stream == NULL) continue; 10103 // handle case where individual ISO packet was sent too late: 10104 // for each additionally queued packet, a new one needs to get skipped 10105 if (i==0){ 10106 num_iso_queued_minimum = iso_stream->num_packets_sent; 10107 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10108 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10109 iso_stream->num_packets_to_skip += num_packets_to_skip; 10110 iso_stream->num_packets_sent -= num_packets_to_skip; 10111 } 10112 // check if we can send now 10113 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10114 can_send = false; 10115 break; 10116 } 10117 } 10118 if (can_send){ 10119 // propagate can send now to individual streams 10120 big->can_send_now_requested = false; 10121 for (i=0;i<big->num_bis;i++){ 10122 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10123 iso_stream->emit_ready_to_send = true; 10124 } 10125 } 10126 } 10127 } 10128 10129 if (hci_stack->hci_packet_buffer_reserved) return; 10130 10131 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10132 while (btstack_linked_list_iterator_has_next(&it)){ 10133 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10134 // report bis ready 10135 uint8_t i; 10136 for (i=0;i<big->num_bis;i++){ 10137 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10138 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10139 iso_stream->emit_ready_to_send = false; 10140 hci_emit_bis_can_send_now(big, i); 10141 break; 10142 } 10143 } 10144 } 10145 10146 // CIS 10147 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10148 while (btstack_linked_list_iterator_has_next(&it)) { 10149 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10150 if ((iso_stream->can_send_now_requested) && 10151 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10152 iso_stream->can_send_now_requested = false; 10153 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10154 } 10155 } 10156 } 10157 10158 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10159 if (hci_big_for_handle(big_params->big_handle) != NULL){ 10160 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10161 } 10162 if (big_params->num_bis == 0){ 10163 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10164 } 10165 if (big_params->num_bis > MAX_NR_BIS){ 10166 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10167 } 10168 10169 // reserve ISO Streams 10170 uint8_t i; 10171 uint8_t status = ERROR_CODE_SUCCESS; 10172 for (i=0;i<big_params->num_bis;i++){ 10173 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_params->big_handle, i); 10174 if (iso_stream == NULL) { 10175 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10176 break; 10177 } 10178 } 10179 10180 // free structs on error 10181 if (status != ERROR_CODE_SUCCESS){ 10182 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 10183 return status; 10184 } 10185 10186 le_audio_big_t * big = storage; 10187 big->big_handle = big_params->big_handle; 10188 big->params = big_params; 10189 big->state = LE_AUDIO_BIG_STATE_CREATE; 10190 big->num_bis = big_params->num_bis; 10191 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10192 10193 hci_run(); 10194 10195 return ERROR_CODE_SUCCESS; 10196 } 10197 10198 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10199 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 10200 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10201 } 10202 if (big_sync_params->num_bis == 0){ 10203 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10204 } 10205 if (big_sync_params->num_bis > MAX_NR_BIS){ 10206 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10207 } 10208 10209 le_audio_big_sync_t * big_sync = storage; 10210 big_sync->big_handle = big_sync_params->big_handle; 10211 big_sync->params = big_sync_params; 10212 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10213 big_sync->num_bis = big_sync_params->num_bis; 10214 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10215 10216 hci_run(); 10217 10218 return ERROR_CODE_SUCCESS; 10219 } 10220 10221 uint8_t gap_big_terminate(uint8_t big_handle){ 10222 le_audio_big_t * big = hci_big_for_handle(big_handle); 10223 if (big == NULL){ 10224 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10225 } 10226 switch (big->state){ 10227 case LE_AUDIO_BIG_STATE_CREATE: 10228 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10229 hci_emit_big_terminated(big); 10230 break; 10231 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10232 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10233 break; 10234 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10235 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10236 case LE_AUDIO_BIG_STATE_ACTIVE: 10237 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10238 hci_run(); 10239 break; 10240 default: 10241 return ERROR_CODE_COMMAND_DISALLOWED; 10242 } 10243 return ERROR_CODE_SUCCESS; 10244 } 10245 10246 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10247 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10248 if (big_sync == NULL){ 10249 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10250 } 10251 switch (big_sync->state){ 10252 case LE_AUDIO_BIG_STATE_CREATE: 10253 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10254 hci_emit_big_sync_stopped(big_handle); 10255 break; 10256 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10257 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10258 break; 10259 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10260 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10261 case LE_AUDIO_BIG_STATE_ACTIVE: 10262 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10263 hci_run(); 10264 break; 10265 default: 10266 return ERROR_CODE_COMMAND_DISALLOWED; 10267 } 10268 return ERROR_CODE_SUCCESS; 10269 } 10270 10271 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10272 le_audio_big_t * big = hci_big_for_handle(big_handle); 10273 if (big == NULL){ 10274 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10275 } 10276 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10277 return ERROR_CODE_COMMAND_DISALLOWED; 10278 } 10279 big->can_send_now_requested = true; 10280 hci_iso_notify_can_send_now(); 10281 return ERROR_CODE_SUCCESS; 10282 } 10283 10284 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10285 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10286 if (iso_stream == NULL){ 10287 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10288 } 10289 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10290 return ERROR_CODE_COMMAND_DISALLOWED; 10291 } 10292 iso_stream->can_send_now_requested = true; 10293 hci_iso_notify_can_send_now(); 10294 return ERROR_CODE_SUCCESS; 10295 } 10296 10297 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10298 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10299 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10300 } 10301 if (cig_params->num_cis == 0){ 10302 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10303 } 10304 if (cig_params->num_cis > MAX_NR_BIS){ 10305 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10306 } 10307 10308 // reserve ISO Streams 10309 uint8_t i; 10310 uint8_t status = ERROR_CODE_SUCCESS; 10311 for (i=0;i<cig_params->num_cis;i++){ 10312 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10313 if (iso_stream == NULL) { 10314 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10315 break; 10316 } 10317 } 10318 10319 // free structs on error 10320 if (status != ERROR_CODE_SUCCESS){ 10321 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10322 return status; 10323 } 10324 10325 le_audio_cig_t * cig = storage; 10326 cig->cig_id = cig_params->cig_id; 10327 cig->num_cis = cig_params->num_cis; 10328 cig->params = cig_params; 10329 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10330 for (i=0;i<cig->num_cis;i++){ 10331 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10332 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10333 cig->cis_setup_active[i] = false; 10334 cig->cis_established[i] = false; 10335 } 10336 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10337 10338 hci_run(); 10339 10340 return ERROR_CODE_SUCCESS; 10341 } 10342 10343 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10344 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 10345 if (cig == NULL){ 10346 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10347 } 10348 10349 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10350 return ERROR_CODE_COMMAND_DISALLOWED; 10351 } 10352 10353 // store ACL Connection Handles 10354 uint8_t i; 10355 for (i=0;i<cig->num_cis;i++){ 10356 // check that all con handles exist and store 10357 hci_con_handle_t cis_handle = cis_con_handles[i]; 10358 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10359 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10360 } 10361 uint8_t j; 10362 bool found = false; 10363 for (j=0;j<cig->num_cis;j++){ 10364 if (cig->cis_con_handles[j] == cis_handle){ 10365 cig->acl_con_handles[j] = acl_con_handles[j]; 10366 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10367 btstack_assert(iso_stream != NULL); 10368 iso_stream->acl_handle = acl_con_handles[j]; 10369 found = true; 10370 break; 10371 } 10372 } 10373 if (!found){ 10374 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10375 } 10376 } 10377 10378 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10379 hci_run(); 10380 10381 return ERROR_CODE_SUCCESS; 10382 } 10383 10384 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10385 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10386 if (iso_stream == NULL){ 10387 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10388 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10389 } 10390 10391 // set next state and continue 10392 iso_stream->state = state; 10393 hci_run(); 10394 return ERROR_CODE_SUCCESS; 10395 } 10396 10397 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10398 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10399 } 10400 10401 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10402 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10403 } 10404 10405 10406 #endif 10407 #endif /* ENABLE_BLE */ 10408 10409 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10410 void hci_setup_test_connections_fuzz(void){ 10411 hci_connection_t * conn; 10412 10413 // default address: 66:55:44:33:00:01 10414 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10415 10416 // setup Controller info 10417 hci_stack->num_cmd_packets = 255; 10418 hci_stack->acl_packets_total_num = 255; 10419 10420 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10421 addr[5] = 0x01; 10422 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10423 conn->con_handle = addr[5]; 10424 conn->state = RECEIVED_CONNECTION_REQUEST; 10425 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10426 10427 // setup incoming Classic SCO connection with con handle 0x0002 10428 addr[5] = 0x02; 10429 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10430 conn->con_handle = addr[5]; 10431 conn->state = RECEIVED_CONNECTION_REQUEST; 10432 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10433 10434 // setup ready Classic ACL connection with con handle 0x0003 10435 addr[5] = 0x03; 10436 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10437 conn->con_handle = addr[5]; 10438 conn->state = OPEN; 10439 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10440 10441 // setup ready Classic SCO connection with con handle 0x0004 10442 addr[5] = 0x04; 10443 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10444 conn->con_handle = addr[5]; 10445 conn->state = OPEN; 10446 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10447 10448 // setup ready LE ACL connection with con handle 0x005 and public address 10449 addr[5] = 0x05; 10450 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10451 conn->con_handle = addr[5]; 10452 conn->state = OPEN; 10453 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10454 conn->sm_connection.sm_connection_encrypted = 1; 10455 } 10456 10457 void hci_free_connections_fuzz(void){ 10458 btstack_linked_list_iterator_t it; 10459 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10460 while (btstack_linked_list_iterator_has_next(&it)){ 10461 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10462 btstack_linked_list_iterator_remove(&it); 10463 btstack_memory_hci_connection_free(con); 10464 } 10465 } 10466 void hci_simulate_working_fuzz(void){ 10467 hci_stack->le_scanning_param_update = false; 10468 hci_init_done(); 10469 hci_stack->num_cmd_packets = 255; 10470 } 10471 #endif 10472