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_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 78 #ifndef HCI_HOST_ACL_PACKET_NUM 79 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 80 #endif 81 #ifndef HCI_HOST_ACL_PACKET_LEN 82 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 83 #endif 84 #ifndef HCI_HOST_SCO_PACKET_NUM 85 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 86 #endif 87 #ifndef HCI_HOST_SCO_PACKET_LEN 88 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 89 #endif 90 #endif 91 92 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 93 #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." 94 #endif 95 96 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 97 #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." 98 #endif 99 100 #define HCI_CONNECTION_TIMEOUT_MS 10000 101 102 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 103 #define HCI_RESET_RESEND_TIMEOUT_MS 200 104 #endif 105 106 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 107 #ifndef GAP_INQUIRY_MAX_NAME_LEN 108 #define GAP_INQUIRY_MAX_NAME_LEN 32 109 #endif 110 111 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 112 #define GAP_INQUIRY_DURATION_MIN 0x01 113 #define GAP_INQUIRY_DURATION_MAX 0x30 114 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 115 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 116 #define GAP_INQUIRY_STATE_IDLE 0x00 117 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 118 #define GAP_INQUIRY_STATE_ACTIVE 0x81 119 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 120 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 121 #define GAP_INQUIRY_STATE_PERIODIC 0x84 122 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 123 124 // GAP Remote Name Request 125 #define GAP_REMOTE_NAME_STATE_IDLE 0 126 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 127 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 128 129 // GAP Pairing 130 #define GAP_PAIRING_STATE_IDLE 0 131 #define GAP_PAIRING_STATE_SEND_PIN 1 132 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 133 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 134 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 135 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 136 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 137 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 138 139 // 140 // compact storage of relevant supported HCI Commands. 141 // X-Macro below provides enumeration and mapping table into the supported 142 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 143 // 144 145 // format: command name, byte offset, bit nr in 64-byte supported commands 146 // currently stored in 32-bit variable 147 #define SUPPORTED_HCI_COMMANDS \ 148 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 149 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 150 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 151 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 152 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 153 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 154 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 155 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 156 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 157 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 158 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 159 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 160 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 161 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 162 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 163 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 164 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 165 166 // enumerate supported commands 167 #define X(name, offset, bit) name, 168 enum { 169 SUPPORTED_HCI_COMMANDS 170 SUPPORTED_HCI_COMMANDS_COUNT 171 }; 172 #undef X 173 174 // prototypes 175 #ifdef ENABLE_CLASSIC 176 static void hci_update_scan_enable(void); 177 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 178 static int hci_local_ssp_activated(void); 179 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 180 static bool hci_ssp_supported(hci_connection_t * connection); 181 static void hci_notify_if_sco_can_send_now(void); 182 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 183 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 184 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 185 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 186 static void hci_connection_timestamp(hci_connection_t *connection); 187 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 188 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 189 #endif 190 191 static int hci_power_control_on(void); 192 static void hci_power_control_off(void); 193 static void hci_state_reset(void); 194 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 195 static void hci_emit_transport_packet_sent(void); 196 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 197 static void hci_emit_nr_connections_changed(void); 198 static void hci_emit_hci_open_failed(void); 199 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 200 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 201 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 202 static void hci_run(void); 203 static int hci_is_le_connection(hci_connection_t * connection); 204 205 #ifdef ENABLE_CLASSIC 206 static int hci_have_usb_transport(void); 207 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 208 #endif 209 210 #ifdef ENABLE_BLE 211 static void hci_whitelist_free(void); 212 #ifdef ENABLE_LE_CENTRAL 213 // called from test/ble_client/advertising_data_parser.c 214 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 215 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 216 static hci_connection_t * gap_get_outgoing_connection(void); 217 static void hci_le_scan_stop(void); 218 static bool hci_run_general_gap_le(void); 219 #endif 220 #ifdef ENABLE_LE_PERIPHERAL 221 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 222 static void hci_periodic_advertiser_list_free(void); 223 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 224 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 225 #endif /* ENABLE_LE_PERIPHERAL */ 226 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 227 static uint8_t hci_iso_stream_create(hci_con_handle_t con_handle, uint8_t big_handle); 228 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 229 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 230 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 231 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 232 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 233 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 234 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 235 static void hci_emit_big_terminated(const le_audio_big_t * big); 236 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 237 static void hci_emit_big_sync_stopped(const le_audio_big_sync_t * big_sync); 238 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 239 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 240 #endif /* ENABLE_BLE */ 241 242 // the STACK is here 243 #ifndef HAVE_MALLOC 244 static hci_stack_t hci_stack_static; 245 #endif 246 static hci_stack_t * hci_stack = NULL; 247 248 #ifdef ENABLE_CLASSIC 249 // default name 250 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 251 252 // test helper 253 static uint8_t disable_l2cap_timeouts = 0; 254 #endif 255 256 // reset connection state on create and on reconnect 257 // don't overwrite addr, con handle, role 258 static void hci_connection_init(hci_connection_t * conn){ 259 conn->authentication_flags = AUTH_FLAG_NONE; 260 conn->bonding_flags = 0; 261 conn->requested_security_level = LEVEL_0; 262 #ifdef ENABLE_CLASSIC 263 conn->request_role = HCI_ROLE_INVALID; 264 conn->sniff_subrating_max_latency = 0xffff; 265 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 266 conn->link_key_type = INVALID_LINK_KEY; 267 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 268 btstack_run_loop_set_timer_context(&conn->timeout, conn); 269 hci_connection_timestamp(conn); 270 #endif 271 conn->acl_recombination_length = 0; 272 conn->acl_recombination_pos = 0; 273 conn->num_packets_sent = 0; 274 275 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 276 #ifdef ENABLE_BLE 277 conn->le_phy_update_all_phys = 0xff; 278 #endif 279 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 280 conn->le_max_tx_octets = 27; 281 #endif 282 #ifdef ENABLE_CLASSIC_PAIRING_OOB 283 conn->classic_oob_c_192 = NULL; 284 conn->classic_oob_r_192 = NULL; 285 conn->classic_oob_c_256 = NULL; 286 conn->classic_oob_r_256 = NULL; 287 #endif 288 } 289 290 /** 291 * create connection for given address 292 * 293 * @return connection OR NULL, if no memory left 294 */ 295 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 296 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 297 298 hci_connection_t * conn = btstack_memory_hci_connection_get(); 299 if (!conn) return NULL; 300 hci_connection_init(conn); 301 302 bd_addr_copy(conn->address, addr); 303 conn->address_type = addr_type; 304 conn->con_handle = HCI_CON_HANDLE_INVALID; 305 conn->role = HCI_ROLE_INVALID; 306 307 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 308 309 return conn; 310 } 311 312 313 /** 314 * get le connection parameter range 315 * 316 * @return le connection parameter range struct 317 */ 318 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 319 *range = hci_stack->le_connection_parameter_range; 320 } 321 322 /** 323 * set le connection parameter range 324 * 325 */ 326 327 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 328 hci_stack->le_connection_parameter_range = *range; 329 } 330 331 /** 332 * @brief Test if connection parameters are inside in existing rage 333 * @param conn_interval_min (unit: 1.25ms) 334 * @param conn_interval_max (unit: 1.25ms) 335 * @param conn_latency 336 * @param supervision_timeout (unit: 10ms) 337 * @return 1 if included 338 */ 339 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){ 340 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 341 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 342 343 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 344 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 345 346 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 347 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 348 349 return 1; 350 } 351 352 /** 353 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 354 * @note: default: 1 355 * @param max_peripheral_connections 356 */ 357 #ifdef ENABLE_LE_PERIPHERAL 358 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 359 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 360 } 361 #endif 362 363 /** 364 * get hci connections iterator 365 * 366 * @return hci connections iterator 367 */ 368 369 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 370 btstack_linked_list_iterator_init(it, &hci_stack->connections); 371 } 372 373 /** 374 * get connection for a given handle 375 * 376 * @return connection OR NULL, if not found 377 */ 378 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 379 btstack_linked_list_iterator_t it; 380 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 381 while (btstack_linked_list_iterator_has_next(&it)){ 382 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 383 if ( item->con_handle == con_handle ) { 384 return item; 385 } 386 } 387 return NULL; 388 } 389 390 /** 391 * get connection for given address 392 * 393 * @return connection OR NULL, if not found 394 */ 395 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 396 btstack_linked_list_iterator_t it; 397 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 398 while (btstack_linked_list_iterator_has_next(&it)){ 399 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 400 if (connection->address_type != addr_type) continue; 401 if (memcmp(addr, connection->address, 6) != 0) continue; 402 return connection; 403 } 404 return NULL; 405 } 406 407 #ifdef ENABLE_CLASSIC 408 409 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 410 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 411 } 412 413 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 414 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 415 } 416 417 #ifdef ENABLE_SCO_OVER_HCI 418 static int hci_number_sco_connections(void){ 419 int connections = 0; 420 btstack_linked_list_iterator_t it; 421 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 422 while (btstack_linked_list_iterator_has_next(&it)){ 423 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 424 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 425 connections++; 426 } 427 return connections; 428 } 429 #endif 430 431 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 432 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 433 #ifdef HAVE_EMBEDDED_TICK 434 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 435 // connections might be timed out 436 hci_emit_l2cap_check_timeout(connection); 437 } 438 #else 439 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 440 // connections might be timed out 441 hci_emit_l2cap_check_timeout(connection); 442 } 443 #endif 444 } 445 446 static void hci_connection_timestamp(hci_connection_t *connection){ 447 #ifdef HAVE_EMBEDDED_TICK 448 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 449 #else 450 connection->timestamp = btstack_run_loop_get_time_ms(); 451 #endif 452 } 453 454 /** 455 * add authentication flags and reset timer 456 * @note: assumes classic connection 457 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 458 */ 459 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 460 bd_addr_t addr; 461 reverse_bd_addr(bd_addr, addr); 462 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 463 if (conn) { 464 connectionSetAuthenticationFlags(conn, flags); 465 hci_connection_timestamp(conn); 466 } 467 } 468 469 static bool hci_pairing_active(hci_connection_t * hci_connection){ 470 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 471 } 472 473 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 474 if (hci_pairing_active(hci_connection)) return; 475 if (ssp){ 476 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 477 } else { 478 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 479 } 480 // if we are initiator, we have sent an HCI Authenticate Request 481 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 482 483 // if we are responder, use minimal service security level as required level 484 if (!initiator){ 485 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); 486 } 487 488 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 489 490 uint8_t event[12]; 491 event[0] = GAP_EVENT_PAIRING_STARTED; 492 event[1] = 10; 493 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 494 reverse_bd_addr(hci_connection->address, &event[4]); 495 event[10] = (uint8_t) ssp; 496 event[11] = (uint8_t) initiator; 497 hci_emit_event(event, sizeof(event), 1); 498 } 499 500 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 501 hci_connection->requested_security_level = LEVEL_0; 502 if (!hci_pairing_active(hci_connection)) return; 503 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 504 #ifdef ENABLE_CLASSIC_PAIRING_OOB 505 hci_connection->classic_oob_c_192 = NULL; 506 hci_connection->classic_oob_r_192 = NULL; 507 hci_connection->classic_oob_c_256 = NULL; 508 hci_connection->classic_oob_r_256 = NULL; 509 #endif 510 log_info("pairing complete, status %02x", status); 511 512 uint8_t event[11]; 513 event[0] = GAP_EVENT_PAIRING_COMPLETE; 514 event[1] = 9; 515 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 516 reverse_bd_addr(hci_connection->address, &event[4]); 517 event[10] = status; 518 hci_emit_event(event, sizeof(event), 1); 519 520 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 521 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 522 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 523 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 524 hci_connection->bonding_status = status; 525 } 526 } 527 528 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 529 hci_connection_t * conn = hci_connection_for_handle(handle); 530 if (!conn) return false; 531 return hci_pairing_active(conn); 532 } 533 534 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 535 if (!hci_stack->link_key_db) return; 536 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 537 hci_stack->link_key_db->delete_link_key(addr); 538 } 539 540 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 541 if (!hci_stack->link_key_db) return; 542 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 543 hci_stack->link_key_db->put_link_key(addr, link_key, type); 544 } 545 546 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 547 if (!hci_stack->link_key_db) return false; 548 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 549 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 550 return result; 551 } 552 553 void gap_delete_all_link_keys(void){ 554 bd_addr_t addr; 555 link_key_t link_key; 556 link_key_type_t type; 557 btstack_link_key_iterator_t it; 558 int ok = gap_link_key_iterator_init(&it); 559 if (!ok) { 560 log_error("could not initialize iterator"); 561 return; 562 } 563 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 564 gap_drop_link_key_for_bd_addr(addr); 565 } 566 gap_link_key_iterator_done(&it); 567 } 568 569 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 570 if (!hci_stack->link_key_db) return 0; 571 if (!hci_stack->link_key_db->iterator_init) return 0; 572 return hci_stack->link_key_db->iterator_init(it); 573 } 574 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){ 575 if (!hci_stack->link_key_db) return 0; 576 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 577 } 578 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 579 if (!hci_stack->link_key_db) return; 580 hci_stack->link_key_db->iterator_done(it); 581 } 582 #endif 583 584 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 585 switch (address_type){ 586 case BD_ADDR_TYPE_LE_PUBLIC: 587 case BD_ADDR_TYPE_LE_RANDOM: 588 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 589 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 590 return true; 591 default: 592 return false; 593 } 594 } 595 596 static int hci_is_le_connection(hci_connection_t * connection){ 597 return hci_is_le_connection_type(connection->address_type); 598 } 599 600 /** 601 * count connections 602 */ 603 static int nr_hci_connections(void){ 604 int count = 0; 605 btstack_linked_item_t *it; 606 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 607 count++; 608 } 609 return count; 610 } 611 612 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 613 614 unsigned int num_packets_sent_classic = 0; 615 unsigned int num_packets_sent_le = 0; 616 617 btstack_linked_item_t *it; 618 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 619 hci_connection_t * connection = (hci_connection_t *) it; 620 if (hci_is_le_connection(connection)){ 621 num_packets_sent_le += connection->num_packets_sent; 622 } 623 if (connection->address_type == BD_ADDR_TYPE_ACL){ 624 num_packets_sent_classic += connection->num_packets_sent; 625 } 626 } 627 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 628 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 629 int free_slots_le = 0; 630 631 if (free_slots_classic < 0){ 632 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); 633 return 0; 634 } 635 636 if (hci_stack->le_acl_packets_total_num){ 637 // if we have LE slots, they are used 638 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 639 if (free_slots_le < 0){ 640 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); 641 return 0; 642 } 643 } else { 644 // otherwise, classic slots are used for LE, too 645 free_slots_classic -= num_packets_sent_le; 646 if (free_slots_classic < 0){ 647 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); 648 return 0; 649 } 650 } 651 652 switch (address_type){ 653 case BD_ADDR_TYPE_UNKNOWN: 654 log_error("hci_number_free_acl_slots: unknown address type"); 655 return 0; 656 657 case BD_ADDR_TYPE_ACL: 658 return (uint16_t) free_slots_classic; 659 660 default: 661 if (hci_stack->le_acl_packets_total_num > 0){ 662 return (uint16_t) free_slots_le; 663 } 664 return (uint16_t) free_slots_classic; 665 } 666 } 667 668 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 669 // get connection type 670 hci_connection_t * connection = hci_connection_for_handle(con_handle); 671 if (!connection){ 672 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 673 return 0; 674 } 675 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 676 } 677 678 #ifdef ENABLE_CLASSIC 679 static int hci_number_free_sco_slots(void){ 680 unsigned int num_sco_packets_sent = 0; 681 btstack_linked_item_t *it; 682 if (hci_stack->synchronous_flow_control_enabled){ 683 // explicit flow control 684 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 685 hci_connection_t * connection = (hci_connection_t *) it; 686 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 687 num_sco_packets_sent += connection->num_packets_sent; 688 } 689 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 690 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 691 return 0; 692 } 693 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 694 } else { 695 // implicit flow control -- TODO 696 int num_ready = 0; 697 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 698 hci_connection_t * connection = (hci_connection_t *) it; 699 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 700 if (connection->sco_tx_ready == 0) continue; 701 num_ready++; 702 } 703 return num_ready; 704 } 705 } 706 #endif 707 708 // only used to send HCI Host Number Completed Packets 709 static int hci_can_send_comand_packet_transport(void){ 710 if (hci_stack->hci_packet_buffer_reserved) return 0; 711 712 // check for async hci transport implementations 713 if (hci_stack->hci_transport->can_send_packet_now){ 714 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 715 return 0; 716 } 717 } 718 return 1; 719 } 720 721 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 722 bool hci_can_send_command_packet_now(void){ 723 if (hci_can_send_comand_packet_transport() == 0) return false; 724 return hci_stack->num_cmd_packets > 0u; 725 } 726 727 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 728 // check for async hci transport implementations 729 if (!hci_stack->hci_transport->can_send_packet_now) return true; 730 return hci_stack->hci_transport->can_send_packet_now(packet_type); 731 } 732 733 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 734 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 735 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 736 } 737 738 bool hci_can_send_acl_le_packet_now(void){ 739 if (hci_stack->hci_packet_buffer_reserved) return false; 740 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 741 } 742 743 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 744 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 745 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 746 } 747 748 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 749 if (hci_stack->hci_packet_buffer_reserved) return false; 750 return hci_can_send_prepared_acl_packet_now(con_handle); 751 } 752 753 #ifdef ENABLE_CLASSIC 754 bool hci_can_send_acl_classic_packet_now(void){ 755 if (hci_stack->hci_packet_buffer_reserved) return false; 756 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 757 } 758 759 bool hci_can_send_prepared_sco_packet_now(void){ 760 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 761 if (hci_have_usb_transport()){ 762 return hci_stack->sco_can_send_now; 763 } else { 764 return hci_number_free_sco_slots() > 0; 765 } 766 } 767 768 bool hci_can_send_sco_packet_now(void){ 769 if (hci_stack->hci_packet_buffer_reserved) return false; 770 return hci_can_send_prepared_sco_packet_now(); 771 } 772 773 void hci_request_sco_can_send_now_event(void){ 774 hci_stack->sco_waiting_for_can_send_now = 1; 775 hci_notify_if_sco_can_send_now(); 776 } 777 #endif 778 779 // used for internal checks in l2cap.c 780 bool hci_is_packet_buffer_reserved(void){ 781 return hci_stack->hci_packet_buffer_reserved; 782 } 783 784 // reserves outgoing packet buffer. 785 // @return 1 if successful 786 bool hci_reserve_packet_buffer(void){ 787 if (hci_stack->hci_packet_buffer_reserved) { 788 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 789 return false; 790 } 791 hci_stack->hci_packet_buffer_reserved = true; 792 return true; 793 } 794 795 void hci_release_packet_buffer(void){ 796 hci_stack->hci_packet_buffer_reserved = false; 797 } 798 799 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 800 static int hci_transport_synchronous(void){ 801 return hci_stack->hci_transport->can_send_packet_now == NULL; 802 } 803 804 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 805 806 // 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); 807 808 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 809 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 810 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 811 max_acl_data_packet_length = hci_stack->le_data_packets_length; 812 } 813 814 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 815 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 816 max_acl_data_packet_length = connection->le_max_tx_octets; 817 } 818 #endif 819 820 log_debug("hci_send_acl_packet_fragments entered"); 821 822 uint8_t status = ERROR_CODE_SUCCESS; 823 // multiple packets could be send on a synchronous HCI transport 824 while (true){ 825 826 log_debug("hci_send_acl_packet_fragments loop entered"); 827 828 // get current data 829 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 830 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 831 bool more_fragments = false; 832 833 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 834 if (current_acl_data_packet_length > max_acl_data_packet_length){ 835 more_fragments = true; 836 current_acl_data_packet_length = max_acl_data_packet_length; 837 } 838 839 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 840 if (acl_header_pos > 0u){ 841 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 842 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 843 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 844 } 845 846 // update header len 847 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 848 849 // count packet 850 connection->num_packets_sent++; 851 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 852 853 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 854 if (more_fragments){ 855 // update start of next fragment to send 856 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 857 } else { 858 // done 859 hci_stack->acl_fragmentation_pos = 0; 860 hci_stack->acl_fragmentation_total_size = 0; 861 } 862 863 // send packet 864 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 865 const int size = current_acl_data_packet_length + 4; 866 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 867 hci_stack->acl_fragmentation_tx_active = 1; 868 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 869 if (err != 0){ 870 // no error from HCI Transport expected 871 status = ERROR_CODE_HARDWARE_FAILURE; 872 } 873 874 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 875 876 // done yet? 877 if (!more_fragments) break; 878 879 // can send more? 880 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 881 } 882 883 log_debug("hci_send_acl_packet_fragments loop over"); 884 885 // release buffer now for synchronous transport 886 if (hci_transport_synchronous()){ 887 hci_stack->acl_fragmentation_tx_active = 0; 888 hci_release_packet_buffer(); 889 hci_emit_transport_packet_sent(); 890 } 891 892 return status; 893 } 894 895 // pre: caller has reserved the packet buffer 896 uint8_t hci_send_acl_packet_buffer(int size){ 897 btstack_assert(hci_stack->hci_packet_buffer_reserved); 898 899 uint8_t * packet = hci_stack->hci_packet_buffer; 900 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 901 902 // check for free places on Bluetooth module 903 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 904 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 905 hci_release_packet_buffer(); 906 hci_emit_transport_packet_sent(); 907 return BTSTACK_ACL_BUFFERS_FULL; 908 } 909 910 hci_connection_t *connection = hci_connection_for_handle( con_handle); 911 if (!connection) { 912 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 913 hci_release_packet_buffer(); 914 hci_emit_transport_packet_sent(); 915 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 916 } 917 918 #ifdef ENABLE_CLASSIC 919 hci_connection_timestamp(connection); 920 #endif 921 922 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 923 924 // setup data 925 hci_stack->acl_fragmentation_total_size = size; 926 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 927 928 return hci_send_acl_packet_fragments(connection); 929 } 930 931 #ifdef ENABLE_CLASSIC 932 // pre: caller has reserved the packet buffer 933 uint8_t hci_send_sco_packet_buffer(int size){ 934 btstack_assert(hci_stack->hci_packet_buffer_reserved); 935 936 uint8_t * packet = hci_stack->hci_packet_buffer; 937 938 // skip checks in loopback mode 939 if (!hci_stack->loopback_mode){ 940 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 941 942 // check for free places on Bluetooth module 943 if (!hci_can_send_prepared_sco_packet_now()) { 944 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 945 hci_release_packet_buffer(); 946 hci_emit_transport_packet_sent(); 947 return BTSTACK_ACL_BUFFERS_FULL; 948 } 949 950 // track send packet in connection struct 951 hci_connection_t *connection = hci_connection_for_handle( con_handle); 952 if (!connection) { 953 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 954 hci_release_packet_buffer(); 955 hci_emit_transport_packet_sent(); 956 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 957 } 958 959 if (hci_have_usb_transport()){ 960 // token used 961 hci_stack->sco_can_send_now = false; 962 } else { 963 if (hci_stack->synchronous_flow_control_enabled){ 964 connection->num_packets_sent++; 965 } else { 966 connection->sco_tx_ready--; 967 } 968 } 969 } 970 971 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 972 973 #ifdef HAVE_SCO_TRANSPORT 974 hci_stack->sco_transport->send_packet(packet, size); 975 hci_release_packet_buffer(); 976 hci_emit_transport_packet_sent(); 977 978 return 0; 979 #else 980 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 981 if (hci_transport_synchronous()){ 982 hci_release_packet_buffer(); 983 hci_emit_transport_packet_sent(); 984 } 985 986 if (err != 0){ 987 return ERROR_CODE_HARDWARE_FAILURE; 988 } 989 return ERROR_CODE_SUCCESS; 990 #endif 991 } 992 #endif 993 994 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 995 static uint8_t hci_send_iso_packet_fragments(void){ 996 997 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 998 uint8_t status = ERROR_CODE_SUCCESS; 999 // multiple packets could be send on a synchronous HCI transport 1000 while (true){ 1001 1002 // get current data 1003 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1004 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1005 bool more_fragments = false; 1006 1007 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1008 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1009 more_fragments = true; 1010 current_iso_data_packet_length = max_iso_data_packet_length; 1011 } 1012 1013 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1014 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1015 uint8_t pb_flags; 1016 if (iso_header_pos == 0u){ 1017 // first fragment, keep TS field 1018 pb_flags = more_fragments ? 0x00 : 0x02; 1019 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1020 } else { 1021 // later fragment, drop TS field 1022 pb_flags = more_fragments ? 0x01 : 0x03; 1023 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1024 } 1025 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1026 1027 // update header len 1028 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1029 1030 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1031 if (more_fragments){ 1032 // update start of next fragment to send 1033 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1034 } else { 1035 // done 1036 hci_stack->iso_fragmentation_pos = 0; 1037 hci_stack->iso_fragmentation_total_size = 0; 1038 } 1039 1040 // send packet 1041 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1042 const int size = current_iso_data_packet_length + 4; 1043 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1044 hci_stack->iso_fragmentation_tx_active = true; 1045 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1046 if (err != 0){ 1047 // no error from HCI Transport expected 1048 status = ERROR_CODE_HARDWARE_FAILURE; 1049 } 1050 1051 // done yet? 1052 if (!more_fragments) break; 1053 1054 // can send more? 1055 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1056 } 1057 1058 // release buffer now for synchronous transport 1059 if (hci_transport_synchronous()){ 1060 hci_stack->iso_fragmentation_tx_active = false; 1061 hci_release_packet_buffer(); 1062 hci_emit_transport_packet_sent(); 1063 } 1064 1065 return status; 1066 } 1067 1068 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1069 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1070 1071 // setup data 1072 hci_stack->iso_fragmentation_total_size = size; 1073 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1074 1075 // TODO: check for space on controller 1076 // TODO: track outgoing packet sent 1077 1078 return hci_send_iso_packet_fragments(); 1079 } 1080 #endif 1081 1082 static void acl_handler(uint8_t *packet, uint16_t size){ 1083 1084 // get info 1085 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1086 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1087 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1088 uint16_t acl_length = READ_ACL_LENGTH(packet); 1089 1090 // ignore non-registered handle 1091 if (!conn){ 1092 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1093 return; 1094 } 1095 1096 // assert packet is complete 1097 if ((acl_length + 4u) != size){ 1098 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1099 return; 1100 } 1101 1102 #ifdef ENABLE_CLASSIC 1103 // update idle timestamp 1104 hci_connection_timestamp(conn); 1105 #endif 1106 1107 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1108 hci_stack->host_completed_packets = 1; 1109 conn->num_packets_completed++; 1110 #endif 1111 1112 // handle different packet types 1113 switch (acl_flags & 0x03u) { 1114 1115 case 0x01: // continuation fragment 1116 1117 // sanity checks 1118 if (conn->acl_recombination_pos == 0u) { 1119 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1120 return; 1121 } 1122 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1123 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1124 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1125 conn->acl_recombination_pos = 0; 1126 return; 1127 } 1128 1129 // append fragment payload (header already stored) 1130 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1131 &packet[4], acl_length); 1132 conn->acl_recombination_pos += acl_length; 1133 1134 // forward complete L2CAP packet if complete. 1135 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1136 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1137 // reset recombination buffer 1138 conn->acl_recombination_length = 0; 1139 conn->acl_recombination_pos = 0; 1140 } 1141 break; 1142 1143 case 0x02: { // first fragment 1144 1145 // sanity check 1146 if (conn->acl_recombination_pos) { 1147 log_error( "ACL First Fragment but data in buffer for handle 0x%02x, dropping stale fragments", con_handle); 1148 conn->acl_recombination_pos = 0; 1149 } 1150 1151 // peek into L2CAP packet! 1152 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1153 1154 // compare fragment size to L2CAP packet size 1155 if (acl_length >= (l2cap_length + 4u)){ 1156 // forward fragment as L2CAP packet 1157 hci_emit_acl_packet(packet, acl_length + 4u); 1158 } else { 1159 1160 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1161 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1162 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1163 return; 1164 } 1165 1166 // store first fragment and tweak acl length for complete package 1167 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1168 packet, acl_length + 4u); 1169 conn->acl_recombination_pos = acl_length + 4u; 1170 conn->acl_recombination_length = l2cap_length; 1171 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1172 } 1173 break; 1174 1175 } 1176 default: 1177 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1178 return; 1179 } 1180 1181 // execute main loop 1182 hci_run(); 1183 } 1184 1185 static void hci_connection_stop_timer(hci_connection_t * conn){ 1186 btstack_run_loop_remove_timer(&conn->timeout); 1187 #ifdef ENABLE_CLASSIC 1188 btstack_run_loop_remove_timer(&conn->timeout_sco); 1189 #endif 1190 } 1191 1192 static void hci_shutdown_connection(hci_connection_t *conn){ 1193 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1194 1195 #ifdef ENABLE_CLASSIC 1196 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1197 bd_addr_type_t addr_type = conn->address_type; 1198 #endif 1199 #ifdef HAVE_SCO_TRANSPORT 1200 hci_con_handle_t con_handle = conn->con_handle; 1201 #endif 1202 #endif 1203 1204 hci_connection_stop_timer(conn); 1205 1206 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1207 btstack_memory_hci_connection_free( conn ); 1208 1209 // now it's gone 1210 hci_emit_nr_connections_changed(); 1211 1212 #ifdef ENABLE_CLASSIC 1213 #ifdef ENABLE_SCO_OVER_HCI 1214 // update SCO 1215 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1216 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1217 } 1218 #endif 1219 #ifdef HAVE_SCO_TRANSPORT 1220 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1221 hci_stack->sco_transport->close(con_handle); 1222 } 1223 #endif 1224 #endif 1225 } 1226 1227 #ifdef ENABLE_CLASSIC 1228 1229 static const uint16_t packet_type_sizes[] = { 1230 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1231 HCI_ACL_DH1_SIZE, 0, 0, 0, 1232 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1233 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1234 }; 1235 static const uint8_t packet_type_feature_requirement_bit[] = { 1236 0, // 3 slot packets 1237 1, // 5 slot packets 1238 25, // EDR 2 mpbs 1239 26, // EDR 3 mbps 1240 39, // 3 slot EDR packts 1241 40, // 5 slot EDR packet 1242 }; 1243 static const uint16_t packet_type_feature_packet_mask[] = { 1244 0x0f00, // 3 slot packets 1245 0xf000, // 5 slot packets 1246 0x1102, // EDR 2 mpbs 1247 0x2204, // EDR 3 mbps 1248 0x0300, // 3 slot EDR packts 1249 0x3000, // 5 slot EDR packet 1250 }; 1251 1252 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1253 // enable packet types based on size 1254 uint16_t packet_types = 0; 1255 unsigned int i; 1256 for (i=0;i<16;i++){ 1257 if (packet_type_sizes[i] == 0) continue; 1258 if (packet_type_sizes[i] <= buffer_size){ 1259 packet_types |= 1 << i; 1260 } 1261 } 1262 // disable packet types due to missing local supported features 1263 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1264 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1265 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1266 if (feature_set) continue; 1267 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1268 packet_types &= ~packet_type_feature_packet_mask[i]; 1269 } 1270 // flip bits for "may not be used" 1271 packet_types ^= 0x3306; 1272 return packet_types; 1273 } 1274 1275 uint16_t hci_usable_acl_packet_types(void){ 1276 return hci_stack->packet_types; 1277 } 1278 #endif 1279 1280 uint8_t* hci_get_outgoing_packet_buffer(void){ 1281 // hci packet buffer is >= acl data packet length 1282 return hci_stack->hci_packet_buffer; 1283 } 1284 1285 uint16_t hci_max_acl_data_packet_length(void){ 1286 return hci_stack->acl_data_packet_length; 1287 } 1288 1289 #ifdef ENABLE_CLASSIC 1290 bool hci_extended_sco_link_supported(void){ 1291 // No. 31, byte 3, bit 7 1292 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1293 } 1294 #endif 1295 1296 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1297 // No. 54, byte 6, bit 6 1298 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1299 } 1300 1301 #ifdef ENABLE_CLASSIC 1302 static int gap_ssp_supported(void){ 1303 // No. 51, byte 6, bit 3 1304 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1305 } 1306 #endif 1307 1308 static int hci_classic_supported(void){ 1309 #ifdef ENABLE_CLASSIC 1310 // No. 37, byte 4, bit 5, = No BR/EDR Support 1311 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1312 #else 1313 return 0; 1314 #endif 1315 } 1316 1317 static int hci_le_supported(void){ 1318 #ifdef ENABLE_BLE 1319 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1320 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1321 #else 1322 return 0; 1323 #endif 1324 } 1325 1326 static bool hci_command_supported(uint8_t command_index){ 1327 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1328 } 1329 1330 #ifdef ENABLE_BLE 1331 1332 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1333 static bool hci_extended_advertising_supported(void){ 1334 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1335 } 1336 #endif 1337 1338 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1339 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1340 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1341 } else { 1342 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1343 } 1344 } 1345 1346 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1347 *addr_type = hci_stack->le_own_addr_type; 1348 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1349 } 1350 1351 #ifdef ENABLE_LE_PERIPHERAL 1352 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1353 *addr_type = hci_stack->le_advertisements_own_addr_type; 1354 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1355 }; 1356 #endif 1357 1358 #ifdef ENABLE_LE_CENTRAL 1359 1360 /** 1361 * @brief Get own addr type and address used for LE connections (Central) 1362 */ 1363 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1364 *addr_type = hci_stack->le_connection_own_addr_type; 1365 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1366 } 1367 1368 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1369 1370 uint16_t offset = 3; 1371 uint8_t num_reports = packet[offset]; 1372 offset += 1; 1373 1374 uint16_t i; 1375 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1376 for (i=0; (i<num_reports) && (offset < size);i++){ 1377 // sanity checks on data_length: 1378 uint8_t data_length = packet[offset + 8]; 1379 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1380 if ((offset + 9u + data_length + 1u) > size) return; 1381 // setup event 1382 uint8_t event_size = 10u + data_length; 1383 uint16_t pos = 0; 1384 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1385 event[pos++] = event_size; 1386 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1387 offset += 8; 1388 pos += 8; 1389 event[pos++] = packet[offset + 1 + data_length]; // rssi 1390 event[pos++] = data_length; 1391 offset++; 1392 (void)memcpy(&event[pos], &packet[offset], data_length); 1393 pos += data_length; 1394 offset += data_length + 1u; // rssi 1395 hci_emit_event(event, pos, 1); 1396 } 1397 } 1398 1399 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1400 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1401 uint16_t offset = 3; 1402 uint8_t num_reports = packet[offset++]; 1403 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1404 uint8_t i; 1405 for (i=0; (i<num_reports) && (offset < size);i++){ 1406 // sanity checks on data_length: 1407 uint16_t data_length = packet[offset + 23]; 1408 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1409 if ((offset + 24u + data_length) > size) return; 1410 uint16_t event_type = little_endian_read_16(packet, offset); 1411 offset += 2; 1412 if ((event_type & 0x10) != 0) { 1413 // setup legacy event 1414 uint8_t legacy_event_type; 1415 switch (event_type){ 1416 case 0b0010011: 1417 // ADV_IND 1418 legacy_event_type = 0; 1419 break; 1420 case 0b0010101: 1421 // ADV_DIRECT_IND 1422 legacy_event_type = 1; 1423 break; 1424 case 0b0010010: 1425 // ADV_SCAN_IND 1426 legacy_event_type = 2; 1427 break; 1428 case 0b0010000: 1429 // ADV_NONCONN_IND 1430 legacy_event_type = 3; 1431 break; 1432 case 0b0011011: 1433 case 0b0011010: 1434 // SCAN_RSP 1435 legacy_event_type = 4; 1436 break; 1437 default: 1438 legacy_event_type = 0; 1439 break; 1440 } 1441 uint16_t pos = 0; 1442 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1443 event[pos++] = 10u + data_length; 1444 event[pos++] = legacy_event_type; 1445 // copy address type + address 1446 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1447 offset += 7; 1448 pos += 7; 1449 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1450 offset += 4; 1451 // copy rssi 1452 event[pos++] = packet[offset++]; 1453 // skip periodic advertising interval and direct address 1454 offset += 9; 1455 // copy data len + data; 1456 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1457 pos += 1 +data_length; 1458 offset += 1+ data_length; 1459 hci_emit_event(event, pos, 1); 1460 } else { 1461 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1462 uint8_t report_len = 24 + data_length; 1463 event[1] = report_len; 1464 little_endian_store_16(event, 2, event_type); 1465 memcpy(&event[4], &packet[offset], report_len); 1466 offset += report_len; 1467 hci_emit_event(event, 2 + report_len, 1); 1468 } 1469 } 1470 } 1471 #endif 1472 1473 #endif 1474 #endif 1475 1476 #ifdef ENABLE_BLE 1477 #ifdef ENABLE_LE_PERIPHERAL 1478 static void hci_update_advertisements_enabled_for_current_roles(void){ 1479 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1480 // get number of active le slave connections 1481 int num_slave_connections = 0; 1482 btstack_linked_list_iterator_t it; 1483 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1484 while (btstack_linked_list_iterator_has_next(&it)){ 1485 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1486 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1487 if (con->state != OPEN) continue; 1488 if (con->role != HCI_ROLE_SLAVE) continue; 1489 if (!hci_is_le_connection(con)) continue; 1490 num_slave_connections++; 1491 } 1492 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1493 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1494 } else { 1495 hci_stack->le_advertisements_enabled_for_current_roles = false; 1496 } 1497 } 1498 #endif 1499 #endif 1500 1501 #ifdef ENABLE_CLASSIC 1502 static void gap_run_set_local_name(void){ 1503 hci_reserve_packet_buffer(); 1504 uint8_t * packet = hci_stack->hci_packet_buffer; 1505 // construct HCI Command and send 1506 uint16_t opcode = hci_write_local_name.opcode; 1507 hci_stack->last_cmd_opcode = opcode; 1508 packet[0] = opcode & 0xff; 1509 packet[1] = opcode >> 8; 1510 packet[2] = DEVICE_NAME_LEN; 1511 memset(&packet[3], 0, DEVICE_NAME_LEN); 1512 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1513 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1514 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1515 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1516 // expand '00:00:00:00:00:00' in name with bd_addr 1517 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1518 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1519 } 1520 1521 static void gap_run_set_eir_data(void){ 1522 hci_reserve_packet_buffer(); 1523 uint8_t * packet = hci_stack->hci_packet_buffer; 1524 // construct HCI Command in-place and send 1525 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1526 hci_stack->last_cmd_opcode = opcode; 1527 uint16_t offset = 0; 1528 packet[offset++] = opcode & 0xff; 1529 packet[offset++] = opcode >> 8; 1530 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1531 packet[offset++] = 0; // FEC not required 1532 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1533 if (hci_stack->eir_data){ 1534 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1535 ad_context_t context; 1536 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1537 uint8_t data_type = ad_iterator_get_data_type(&context); 1538 uint8_t size = ad_iterator_get_data_len(&context); 1539 const uint8_t *data = ad_iterator_get_data(&context); 1540 // copy item 1541 packet[offset++] = size + 1; 1542 packet[offset++] = data_type; 1543 memcpy(&packet[offset], data, size); 1544 // update name item 1545 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1546 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1547 } 1548 offset += size; 1549 } 1550 } else { 1551 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1552 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1553 packet[offset++] = bytes_to_copy + 1; 1554 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1555 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1556 // expand '00:00:00:00:00:00' in name with bd_addr 1557 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1558 } 1559 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1560 } 1561 1562 static void hci_run_gap_tasks_classic(void){ 1563 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1564 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1565 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1566 return; 1567 } 1568 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1569 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1570 gap_run_set_local_name(); 1571 return; 1572 } 1573 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1574 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1575 gap_run_set_eir_data(); 1576 return; 1577 } 1578 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1579 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1580 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1581 return; 1582 } 1583 // write page scan activity 1584 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1585 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1586 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1587 return; 1588 } 1589 // write page scan type 1590 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1591 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1592 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1593 return; 1594 } 1595 // write page timeout 1596 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1597 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1598 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1599 return; 1600 } 1601 // send scan enable 1602 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1603 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1604 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1605 return; 1606 } 1607 // send write scan activity 1608 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1609 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1610 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1611 return; 1612 } 1613 } 1614 #endif 1615 1616 #ifndef HAVE_HOST_CONTROLLER_API 1617 1618 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1619 if (!hci_stack->config) return 0; 1620 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1621 // Limit baud rate for Broadcom chipsets to 3 mbps 1622 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1623 baud_rate = 3000000; 1624 } 1625 return baud_rate; 1626 } 1627 1628 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1629 UNUSED(ds); 1630 1631 switch (hci_stack->substate){ 1632 case HCI_INIT_W4_SEND_RESET: 1633 log_info("Resend HCI Reset"); 1634 hci_stack->substate = HCI_INIT_SEND_RESET; 1635 hci_stack->num_cmd_packets = 1; 1636 hci_run(); 1637 break; 1638 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1639 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1640 if (hci_stack->hci_transport->reset_link){ 1641 hci_stack->hci_transport->reset_link(); 1642 } 1643 1644 /* fall through */ 1645 1646 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1647 log_info("Resend HCI Reset - CSR Warm Boot"); 1648 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1649 hci_stack->num_cmd_packets = 1; 1650 hci_run(); 1651 break; 1652 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1653 if (hci_stack->hci_transport->set_baudrate){ 1654 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1655 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1656 hci_stack->hci_transport->set_baudrate(baud_rate); 1657 } 1658 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1659 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1660 if (hci_stack->hci_transport->reset_link){ 1661 log_info("Link Reset"); 1662 hci_stack->hci_transport->reset_link(); 1663 } 1664 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1665 hci_run(); 1666 } 1667 break; 1668 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1669 // otherwise continue 1670 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1671 hci_send_cmd(&hci_read_local_supported_commands); 1672 break; 1673 default: 1674 break; 1675 } 1676 } 1677 #endif 1678 1679 static void hci_initializing_next_state(void){ 1680 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1681 } 1682 1683 static void hci_init_done(void){ 1684 // done. tell the app 1685 log_info("hci_init_done -> HCI_STATE_WORKING"); 1686 hci_stack->state = HCI_STATE_WORKING; 1687 hci_emit_state(); 1688 } 1689 1690 // assumption: hci_can_send_command_packet_now() == true 1691 static void hci_initializing_run(void){ 1692 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1693 1694 if (!hci_can_send_command_packet_now()) return; 1695 1696 #ifndef HAVE_HOST_CONTROLLER_API 1697 bool need_baud_change = hci_stack->config 1698 && hci_stack->chipset 1699 && hci_stack->chipset->set_baudrate_command 1700 && hci_stack->hci_transport->set_baudrate 1701 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1702 #endif 1703 1704 switch (hci_stack->substate){ 1705 case HCI_INIT_SEND_RESET: 1706 hci_state_reset(); 1707 1708 #ifndef HAVE_HOST_CONTROLLER_API 1709 // prepare reset if command complete not received in 100ms 1710 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1711 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1712 btstack_run_loop_add_timer(&hci_stack->timeout); 1713 #endif 1714 // send command 1715 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1716 hci_send_cmd(&hci_reset); 1717 break; 1718 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1719 hci_send_cmd(&hci_read_local_version_information); 1720 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1721 break; 1722 1723 #ifndef HAVE_HOST_CONTROLLER_API 1724 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1725 hci_state_reset(); 1726 // prepare reset if command complete not received in 100ms 1727 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1728 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1729 btstack_run_loop_add_timer(&hci_stack->timeout); 1730 // send command 1731 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1732 hci_send_cmd(&hci_reset); 1733 break; 1734 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1735 hci_state_reset(); 1736 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1737 hci_send_cmd(&hci_reset); 1738 break; 1739 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1740 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1741 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1742 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1743 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1744 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1745 break; 1746 } 1747 case HCI_INIT_SET_BD_ADDR: 1748 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1749 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1750 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1751 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1752 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1753 break; 1754 case HCI_INIT_SEND_READ_LOCAL_NAME: 1755 #ifdef ENABLE_CLASSIC 1756 hci_send_cmd(&hci_read_local_name); 1757 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1758 break; 1759 #endif 1760 /* fall through */ 1761 1762 case HCI_INIT_SEND_BAUD_CHANGE: 1763 if (need_baud_change) { 1764 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1765 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1766 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1767 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1768 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1769 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1770 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1771 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1772 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1773 btstack_run_loop_add_timer(&hci_stack->timeout); 1774 } 1775 break; 1776 } 1777 1778 /* fall through */ 1779 1780 case HCI_INIT_CUSTOM_INIT: 1781 // Custom initialization 1782 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1783 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1784 bool send_cmd = false; 1785 switch (hci_stack->chipset_result){ 1786 case BTSTACK_CHIPSET_VALID_COMMAND: 1787 send_cmd = true; 1788 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1789 break; 1790 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1791 send_cmd = true; 1792 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1793 log_info("CSR Warm Boot"); 1794 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1795 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1796 btstack_run_loop_add_timer(&hci_stack->timeout); 1797 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1798 && hci_stack->config 1799 && hci_stack->chipset 1800 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1801 && hci_stack->hci_transport->set_baudrate 1802 && hci_transport_uart_get_main_baud_rate()){ 1803 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1804 } else { 1805 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1806 } 1807 break; 1808 default: 1809 break; 1810 } 1811 1812 if (send_cmd){ 1813 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1814 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1815 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1816 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1817 break; 1818 } 1819 log_info("Init script done"); 1820 1821 // Init script download on Broadcom chipsets causes: 1822 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1823 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1824 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1825 1826 // - baud rate to reset, restore UART baud rate if needed 1827 if (need_baud_change) { 1828 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1829 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1830 hci_stack->hci_transport->set_baudrate(baud_rate); 1831 } 1832 1833 uint16_t bcm_delay_ms = 300; 1834 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1835 // -> Work around: wait here. 1836 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1837 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1838 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1839 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1840 btstack_run_loop_add_timer(&hci_stack->timeout); 1841 break; 1842 } 1843 } 1844 #endif 1845 /* fall through */ 1846 1847 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1848 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1849 hci_send_cmd(&hci_read_local_supported_commands); 1850 break; 1851 case HCI_INIT_READ_BD_ADDR: 1852 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1853 hci_send_cmd(&hci_read_bd_addr); 1854 break; 1855 case HCI_INIT_READ_BUFFER_SIZE: 1856 // only read buffer size if supported 1857 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1858 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1859 hci_send_cmd(&hci_read_buffer_size); 1860 break; 1861 } 1862 1863 /* fall through */ 1864 1865 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1866 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1867 hci_send_cmd(&hci_read_local_supported_features); 1868 break; 1869 1870 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1871 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1872 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1873 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1874 break; 1875 case HCI_INIT_HOST_BUFFER_SIZE: 1876 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1877 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1878 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1879 break; 1880 #endif 1881 1882 case HCI_INIT_SET_EVENT_MASK: 1883 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1884 if (hci_le_supported()){ 1885 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1886 } else { 1887 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1888 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1889 } 1890 break; 1891 1892 case HCI_INIT_SET_EVENT_MASK_2: 1893 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 1894 // setting Event Mask 2 causes Controller to drop Encryption Change events. 1895 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 1896 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 1897 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1898 // Encryption Change Event v2 - bit 25 1899 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1900 break; 1901 } 1902 1903 #ifdef ENABLE_CLASSIC 1904 /* fall through */ 1905 1906 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 1907 if (hci_classic_supported() && gap_ssp_supported()){ 1908 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 1909 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 1910 break; 1911 } 1912 1913 /* fall through */ 1914 1915 case HCI_INIT_WRITE_INQUIRY_MODE: 1916 if (hci_classic_supported()){ 1917 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 1918 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 1919 break; 1920 } 1921 1922 /* fall through */ 1923 1924 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 1925 // skip write secure connections host support if not supported or disabled 1926 if (hci_classic_supported() && hci_stack->secure_connections_enable 1927 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 1928 hci_stack->secure_connections_active = true; 1929 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 1930 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 1931 break; 1932 } 1933 1934 /* fall through */ 1935 1936 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 1937 // skip set min encryption key size 1938 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 1939 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 1940 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 1941 break; 1942 } 1943 1944 #ifdef ENABLE_SCO_OVER_HCI 1945 /* fall through */ 1946 1947 // only sent if ENABLE_SCO_OVER_HCI is defined 1948 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 1949 // skip write synchronous flow control if not supported 1950 if (hci_classic_supported() 1951 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 1952 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 1953 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 1954 break; 1955 } 1956 /* fall through */ 1957 1958 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 1959 // skip write default erroneous data reporting if not supported 1960 if (hci_classic_supported() 1961 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 1962 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 1963 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 1964 break; 1965 } 1966 #endif 1967 1968 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 1969 /* fall through */ 1970 1971 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 1972 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 1973 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 1974 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 1975 #ifdef ENABLE_SCO_OVER_HCI 1976 log_info("BCM: Route SCO data via HCI transport"); 1977 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 1978 #endif 1979 #ifdef ENABLE_SCO_OVER_PCM 1980 log_info("BCM: Route SCO data via PCM interface"); 1981 #ifdef ENABLE_BCM_PCM_WBS 1982 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 1983 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 1984 #else 1985 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 1986 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 1987 #endif 1988 #endif 1989 break; 1990 } 1991 #endif 1992 1993 #ifdef ENABLE_SCO_OVER_PCM 1994 /* fall through */ 1995 1996 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 1997 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 1998 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 1999 log_info("BCM: Config PCM interface for I2S"); 2000 #ifdef ENABLE_BCM_PCM_WBS 2001 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2002 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2003 #else 2004 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2005 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2006 #endif 2007 break; 2008 } 2009 #endif 2010 #endif 2011 2012 #ifdef ENABLE_BLE 2013 /* fall through */ 2014 2015 // LE INIT 2016 case HCI_INIT_LE_READ_BUFFER_SIZE: 2017 if (hci_le_supported()){ 2018 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2019 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2020 hci_send_cmd(&hci_le_read_buffer_size_v2); 2021 } else { 2022 hci_send_cmd(&hci_le_read_buffer_size); 2023 } 2024 break; 2025 } 2026 2027 /* fall through */ 2028 2029 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2030 // skip write le host if not supported (e.g. on LE only EM9301) 2031 if (hci_le_supported() 2032 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2033 // LE Supported Host = 1, Simultaneous Host = 0 2034 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2035 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2036 break; 2037 } 2038 2039 /* fall through */ 2040 2041 case HCI_INIT_LE_SET_EVENT_MASK: 2042 if (hci_le_supported()){ 2043 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2044 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2045 break; 2046 } 2047 #endif 2048 2049 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2050 /* fall through */ 2051 2052 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2053 if (hci_le_supported() 2054 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2055 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2056 hci_send_cmd(&hci_le_read_maximum_data_length); 2057 break; 2058 } 2059 2060 /* fall through */ 2061 2062 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2063 if (hci_le_supported() 2064 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2065 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2066 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2067 break; 2068 } 2069 #endif 2070 2071 #ifdef ENABLE_LE_CENTRAL 2072 /* fall through */ 2073 2074 case HCI_INIT_READ_WHITE_LIST_SIZE: 2075 if (hci_le_supported()){ 2076 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2077 hci_send_cmd(&hci_le_read_white_list_size); 2078 break; 2079 } 2080 2081 #endif 2082 2083 #ifdef ENABLE_LE_PERIPHERAL 2084 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2085 /* fall through */ 2086 2087 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2088 if (hci_extended_advertising_supported()){ 2089 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2090 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2091 break; 2092 } 2093 #endif 2094 #endif 2095 /* fall through */ 2096 2097 case HCI_INIT_DONE: 2098 hci_stack->substate = HCI_INIT_DONE; 2099 // main init sequence complete 2100 #ifdef ENABLE_CLASSIC 2101 // check if initial Classic GAP Tasks are completed 2102 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2103 hci_run_gap_tasks_classic(); 2104 break; 2105 } 2106 #endif 2107 #ifdef ENABLE_BLE 2108 #ifdef ENABLE_LE_CENTRAL 2109 // check if initial LE GAP Tasks are completed 2110 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2111 hci_run_general_gap_le(); 2112 break; 2113 } 2114 #endif 2115 #endif 2116 hci_init_done(); 2117 break; 2118 2119 default: 2120 return; 2121 } 2122 } 2123 2124 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2125 bool command_completed = false; 2126 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2127 uint16_t opcode = little_endian_read_16(packet,3); 2128 if (opcode == hci_stack->last_cmd_opcode){ 2129 command_completed = true; 2130 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2131 } else { 2132 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2133 } 2134 } 2135 2136 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2137 uint8_t status = packet[2]; 2138 uint16_t opcode = little_endian_read_16(packet,4); 2139 if (opcode == hci_stack->last_cmd_opcode){ 2140 if (status){ 2141 command_completed = true; 2142 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2143 } else { 2144 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2145 } 2146 } else { 2147 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2148 } 2149 } 2150 #ifndef HAVE_HOST_CONTROLLER_API 2151 // Vendor == CSR 2152 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2153 // TODO: track actual command 2154 command_completed = true; 2155 } 2156 2157 // Vendor == Toshiba 2158 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2159 // TODO: track actual command 2160 command_completed = true; 2161 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2162 hci_stack->num_cmd_packets = 1; 2163 } 2164 #endif 2165 2166 return command_completed; 2167 } 2168 2169 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2170 2171 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2172 2173 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2174 2175 #ifndef HAVE_HOST_CONTROLLER_API 2176 2177 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2178 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2179 // 2180 // HCI Reset 2181 // Timeout 100 ms 2182 // HCI Reset 2183 // Command Complete Reset 2184 // HCI Read Local Version Information 2185 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2186 // hang... 2187 // 2188 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2189 if (!command_completed 2190 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2191 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2192 2193 uint16_t opcode = little_endian_read_16(packet,3); 2194 if (opcode == hci_reset.opcode){ 2195 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2196 return; 2197 } 2198 } 2199 2200 // CSR & H5 2201 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2202 if (!command_completed 2203 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2204 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2205 2206 uint16_t opcode = little_endian_read_16(packet,3); 2207 if (opcode == hci_reset.opcode){ 2208 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2209 return; 2210 } 2211 } 2212 2213 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2214 // fix: Correct substate and behave as command below 2215 if (command_completed){ 2216 switch (hci_stack->substate){ 2217 case HCI_INIT_SEND_RESET: 2218 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2219 break; 2220 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2221 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2222 break; 2223 default: 2224 break; 2225 } 2226 } 2227 2228 #endif 2229 2230 if (!command_completed) return; 2231 2232 bool need_baud_change = false; 2233 bool need_addr_change = false; 2234 2235 #ifndef HAVE_HOST_CONTROLLER_API 2236 need_baud_change = hci_stack->config 2237 && hci_stack->chipset 2238 && hci_stack->chipset->set_baudrate_command 2239 && hci_stack->hci_transport->set_baudrate 2240 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2241 2242 need_addr_change = hci_stack->custom_bd_addr_set 2243 && hci_stack->chipset 2244 && hci_stack->chipset->set_bd_addr_command; 2245 #endif 2246 2247 switch(hci_stack->substate){ 2248 2249 #ifndef HAVE_HOST_CONTROLLER_API 2250 case HCI_INIT_SEND_RESET: 2251 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2252 // fix: just correct substate and behave as command below 2253 2254 /* fall through */ 2255 #endif 2256 2257 case HCI_INIT_W4_SEND_RESET: 2258 btstack_run_loop_remove_timer(&hci_stack->timeout); 2259 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2260 return; 2261 2262 #ifndef HAVE_HOST_CONTROLLER_API 2263 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2264 // for STLC2500D, baud rate change already happened. 2265 // for others, baud rate gets changed now 2266 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2267 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2268 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2269 hci_stack->hci_transport->set_baudrate(baud_rate); 2270 } 2271 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2272 return; 2273 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2274 btstack_run_loop_remove_timer(&hci_stack->timeout); 2275 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2276 return; 2277 case HCI_INIT_W4_CUSTOM_INIT: 2278 // repeat custom init 2279 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2280 return; 2281 #endif 2282 2283 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2284 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2285 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2286 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2287 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2288 return; 2289 } 2290 if (need_addr_change){ 2291 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2292 return; 2293 } 2294 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2295 return; 2296 #ifndef HAVE_HOST_CONTROLLER_API 2297 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2298 if (need_baud_change){ 2299 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2300 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2301 hci_stack->hci_transport->set_baudrate(baud_rate); 2302 } 2303 if (need_addr_change){ 2304 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2305 return; 2306 } 2307 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2308 return; 2309 case HCI_INIT_W4_SET_BD_ADDR: 2310 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2311 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2312 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2313 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2314 return; 2315 } 2316 // skipping st warm boot 2317 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2318 return; 2319 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2320 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2321 return; 2322 #endif 2323 2324 case HCI_INIT_DONE: 2325 // set state if we came here by fall through 2326 hci_stack->substate = HCI_INIT_DONE; 2327 return; 2328 2329 default: 2330 break; 2331 } 2332 hci_initializing_next_state(); 2333 } 2334 2335 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2336 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2337 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2338 // check if we have been aware of the HCI connection 2339 switch (conn->state){ 2340 case SENT_CREATE_CONNECTION: 2341 case RECEIVED_CONNECTION_REQUEST: 2342 break; 2343 default: 2344 return; 2345 } 2346 2347 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2348 bd_addr_t bd_address; 2349 (void)memcpy(&bd_address, conn->address, 6); 2350 2351 #ifdef ENABLE_CLASSIC 2352 // cache needed data 2353 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2354 #endif 2355 2356 // connection failed, remove entry 2357 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2358 btstack_memory_hci_connection_free( conn ); 2359 2360 #ifdef ENABLE_CLASSIC 2361 // notify client if dedicated bonding 2362 if (notify_dedicated_bonding_failed){ 2363 log_info("hci notify_dedicated_bonding_failed"); 2364 hci_emit_dedicated_bonding_result(bd_address, status); 2365 } 2366 2367 // if authentication error, also delete link key 2368 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2369 gap_drop_link_key_for_bd_addr(bd_address); 2370 } 2371 #else 2372 UNUSED(status); 2373 #endif 2374 } 2375 2376 #ifdef ENABLE_CLASSIC 2377 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2378 // SSP Controller 2379 if (features[6] & (1 << 3)){ 2380 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2381 } 2382 // eSCO 2383 if (features[3] & (1<<7)){ 2384 conn->remote_supported_features[0] |= 1; 2385 } 2386 // Extended features 2387 if (features[7] & (1<<7)){ 2388 conn->remote_supported_features[0] |= 2; 2389 } 2390 } 2391 2392 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2393 // SSP Host 2394 if (features[0] & (1 << 0)){ 2395 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2396 } 2397 // SC Host 2398 if (features[0] & (1 << 3)){ 2399 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2400 } 2401 } 2402 2403 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2404 // SC Controller 2405 if (features[1] & (1 << 0)){ 2406 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2407 } 2408 } 2409 2410 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2411 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2412 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2413 log_info("Remote features %02x, bonding flags %x", conn->remote_supported_features[0], conn->bonding_flags); 2414 if (conn->bonding_flags & BONDING_DEDICATED){ 2415 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2416 } 2417 } 2418 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2419 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2420 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2421 } 2422 2423 #endif 2424 2425 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2426 // handle BT initialization 2427 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2428 hci_initializing_event_handler(packet, size); 2429 } 2430 2431 // help with BT sleep 2432 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2433 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2434 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2435 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2436 hci_initializing_next_state(); 2437 } 2438 } 2439 2440 #ifdef ENABLE_CLASSIC 2441 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2442 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2443 conn->encryption_key_size = encryption_key_size; 2444 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2445 2446 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2447 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2448 conn->bonding_flags &= ~BONDING_DEDICATED; 2449 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2450 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2451 return; 2452 } 2453 2454 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2455 conn->requested_security_level = LEVEL_0; 2456 hci_emit_security_level(conn->con_handle, security_level); 2457 return; 2458 } 2459 2460 // Request remote features if not already done 2461 hci_trigger_remote_features_for_connection(conn); 2462 2463 // Request Authentication if not already done 2464 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2465 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2466 } 2467 #endif 2468 2469 static void hci_store_local_supported_commands(const uint8_t * packet){ 2470 // create mapping table 2471 #define X(name, offset, bit) { offset, bit }, 2472 static struct { 2473 uint8_t byte_offset; 2474 uint8_t bit_position; 2475 } supported_hci_commands_map [] = { 2476 SUPPORTED_HCI_COMMANDS 2477 }; 2478 #undef X 2479 2480 // create names for debug purposes 2481 #ifdef ENABLE_LOG_DEBUG 2482 #define X(name, offset, bit) #name, 2483 static const char * command_names[] = { 2484 SUPPORTED_HCI_COMMANDS 2485 }; 2486 #undef X 2487 #endif 2488 2489 hci_stack->local_supported_commands = 0; 2490 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2491 uint16_t i; 2492 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2493 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2494 #ifdef ENABLE_LOG_DEBUG 2495 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); 2496 #else 2497 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2498 #endif 2499 hci_stack->local_supported_commands |= (1LU << i); 2500 } 2501 } 2502 log_info("Local supported commands summary %04x", hci_stack->local_supported_commands); 2503 } 2504 2505 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2506 UNUSED(size); 2507 2508 uint16_t manufacturer; 2509 #ifdef ENABLE_CLASSIC 2510 hci_con_handle_t handle; 2511 hci_connection_t * conn; 2512 uint8_t status; 2513 #endif 2514 // get num cmd packets - limit to 1 to reduce complexity 2515 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2516 2517 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2518 switch (opcode){ 2519 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2520 if (packet[5]) break; 2521 // terminate, name 248 chars 2522 packet[6+248] = 0; 2523 log_info("local name: %s", &packet[6]); 2524 break; 2525 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2526 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2527 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2528 uint16_t acl_len = little_endian_read_16(packet, 6); 2529 uint16_t sco_len = packet[8]; 2530 2531 // determine usable ACL/SCO payload size 2532 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2533 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2534 2535 hci_stack->acl_packets_total_num = (uint8_t) little_endian_read_16(packet, 9); 2536 hci_stack->sco_packets_total_num = (uint8_t) little_endian_read_16(packet, 11); 2537 2538 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2539 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2540 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2541 } 2542 break; 2543 case HCI_OPCODE_HCI_READ_RSSI: 2544 if (packet[5] == ERROR_CODE_SUCCESS){ 2545 uint8_t event[5]; 2546 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2547 event[1] = 3; 2548 (void)memcpy(&event[2], &packet[6], 3); 2549 hci_emit_event(event, sizeof(event), 1); 2550 } 2551 break; 2552 #ifdef ENABLE_BLE 2553 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2554 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2555 hci_stack->le_iso_packets_total_num = packet[11]; 2556 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2557 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2558 2559 /* fall through */ 2560 2561 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2562 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2563 hci_stack->le_acl_packets_total_num = packet[8]; 2564 // determine usable ACL payload size 2565 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2566 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2567 } 2568 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); 2569 break; 2570 #endif 2571 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2572 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2573 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2574 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2575 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); 2576 break; 2577 #endif 2578 #ifdef ENABLE_LE_CENTRAL 2579 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2580 hci_stack->le_whitelist_capacity = packet[6]; 2581 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2582 break; 2583 #endif 2584 #ifdef ENABLE_LE_PERIPHERAL 2585 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2586 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2587 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2588 break; 2589 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2590 if (hci_stack->le_advertising_set_in_current_command != 0) { 2591 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2592 hci_stack->le_advertising_set_in_current_command = 0; 2593 if (advertising_set == NULL) break; 2594 uint8_t adv_status = packet[6]; 2595 uint8_t tx_power = packet[7]; 2596 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 }; 2597 if (adv_status == 0){ 2598 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2599 } 2600 hci_emit_event(event, sizeof(event), 1); 2601 } 2602 break; 2603 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2604 if (hci_stack->le_advertising_set_in_current_command != 0) { 2605 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2606 hci_stack->le_advertising_set_in_current_command = 0; 2607 if (advertising_set == NULL) break; 2608 uint8_t adv_status = packet[5]; 2609 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2610 if (adv_status == 0){ 2611 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2612 } 2613 hci_emit_event(event, sizeof(event), 1); 2614 } 2615 break; 2616 #endif 2617 #endif 2618 case HCI_OPCODE_HCI_READ_BD_ADDR: 2619 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2620 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)); 2621 #ifdef ENABLE_CLASSIC 2622 if (hci_stack->link_key_db){ 2623 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2624 } 2625 #endif 2626 break; 2627 #ifdef ENABLE_CLASSIC 2628 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2629 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2630 break; 2631 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2632 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2633 if (status == ERROR_CODE_SUCCESS) { 2634 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2635 } else { 2636 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2637 } 2638 break; 2639 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2640 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2641 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2642 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2643 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2644 hci_emit_event(event, sizeof(event), 1); 2645 } 2646 break; 2647 #endif 2648 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2649 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2650 2651 #ifdef ENABLE_CLASSIC 2652 // determine usable ACL packet types based on host buffer size and supported features 2653 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2654 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2655 #endif 2656 // Classic/LE 2657 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2658 break; 2659 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2660 manufacturer = little_endian_read_16(packet, 10); 2661 // map Cypress to Broadcom 2662 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2663 log_info("Treat Cypress as Broadcom"); 2664 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2665 little_endian_store_16(packet, 10, manufacturer); 2666 } 2667 hci_stack->manufacturer = manufacturer; 2668 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2669 break; 2670 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2671 hci_store_local_supported_commands(packet); 2672 break; 2673 #ifdef ENABLE_CLASSIC 2674 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2675 if (packet[5]) return; 2676 hci_stack->synchronous_flow_control_enabled = 1; 2677 break; 2678 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2679 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2680 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2681 conn = hci_connection_for_handle(handle); 2682 if (conn != NULL) { 2683 uint8_t key_size = 0; 2684 if (status == 0){ 2685 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2686 log_info("Handle %04x key Size: %u", handle, key_size); 2687 } else { 2688 key_size = 1; 2689 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2690 } 2691 hci_handle_read_encryption_key_size_complete(conn, key_size); 2692 } 2693 break; 2694 // assert pairing complete event is emitted. 2695 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2696 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2697 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2698 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2699 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2700 // lookup connection by gap pairing addr 2701 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2702 if (conn == NULL) break; 2703 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2704 break; 2705 2706 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2707 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2708 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2709 uint8_t event[67]; 2710 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2711 event[1] = 65; 2712 (void)memset(&event[2], 0, 65); 2713 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2714 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2715 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2716 event[2] = 3; 2717 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2718 } else { 2719 event[2] = 1; 2720 } 2721 } 2722 hci_emit_event(event, sizeof(event), 0); 2723 break; 2724 } 2725 2726 // note: only needed if user does not provide OOB data 2727 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2728 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2729 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2730 if (conn == NULL) break; 2731 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2732 break; 2733 #endif 2734 #endif 2735 #ifdef ENABLE_BLE 2736 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2737 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2738 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2739 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2740 if (status != ERROR_CODE_SUCCESS){ 2741 hci_iso_stream_requested_finalize(0xff); 2742 } 2743 break; 2744 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2745 // lookup BIG by state 2746 btstack_linked_list_iterator_t it; 2747 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2748 while (btstack_linked_list_iterator_has_next(&it)) { 2749 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2750 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2751 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2752 if (status == ERROR_CODE_SUCCESS){ 2753 big->state_vars.next_bis++; 2754 if (big->state_vars.next_bis == big->num_bis){ 2755 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2756 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2757 } else { 2758 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2759 } 2760 } else { 2761 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2762 big->state_vars.status = status; 2763 } 2764 return; 2765 } 2766 } 2767 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2768 while (btstack_linked_list_iterator_has_next(&it)) { 2769 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2770 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2771 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2772 if (status == ERROR_CODE_SUCCESS){ 2773 big_sync->state_vars.next_bis++; 2774 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2775 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2776 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2777 } else { 2778 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2779 } 2780 } else { 2781 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2782 big_sync->state_vars.status = status; 2783 } 2784 return; 2785 } 2786 } 2787 break; 2788 } 2789 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 2790 // lookup BIG by state 2791 btstack_linked_list_iterator_t it; 2792 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2793 while (btstack_linked_list_iterator_has_next(&it)) { 2794 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2795 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED){ 2796 btstack_linked_list_iterator_remove(&it); 2797 switch (big_sync->state){ 2798 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 2799 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 2800 break; 2801 default: 2802 hci_emit_big_sync_stopped(big_sync); 2803 break; 2804 } 2805 return; 2806 } 2807 } 2808 break; 2809 } 2810 #endif 2811 #endif 2812 default: 2813 break; 2814 } 2815 } 2816 2817 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 2818 UNUSED(size); 2819 2820 // get num cmd packets - limit to 1 to reduce complexity 2821 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 2822 2823 // get opcode and command status 2824 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 2825 2826 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 2827 uint8_t status = hci_event_command_status_get_status(packet); 2828 #endif 2829 2830 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2831 bd_addr_type_t addr_type; 2832 #endif 2833 2834 switch (opcode){ 2835 #ifdef ENABLE_CLASSIC 2836 case HCI_OPCODE_HCI_CREATE_CONNECTION: 2837 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 2838 #endif 2839 #ifdef ENABLE_LE_CENTRAL 2840 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 2841 #endif 2842 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2843 addr_type = hci_stack->outgoing_addr_type; 2844 2845 // reset outgoing address info 2846 memset(hci_stack->outgoing_addr, 0, 6); 2847 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 2848 2849 // on error 2850 if (status != ERROR_CODE_SUCCESS){ 2851 #ifdef ENABLE_LE_CENTRAL 2852 if (hci_is_le_connection_type(addr_type)){ 2853 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2854 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2855 } 2856 #endif 2857 // error => outgoing connection failed 2858 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 2859 if (conn != NULL){ 2860 hci_handle_connection_failed(conn, status); 2861 } 2862 } 2863 break; 2864 #endif 2865 #ifdef ENABLE_CLASSIC 2866 case HCI_OPCODE_HCI_INQUIRY: 2867 if (status == ERROR_CODE_SUCCESS) { 2868 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 2869 } else { 2870 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2871 } 2872 break; 2873 #endif 2874 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2875 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2876 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2877 if (status == ERROR_CODE_SUCCESS){ 2878 hci_iso_stream_requested_confirm(0xff); 2879 } else { 2880 hci_iso_stream_requested_finalize(0xff); 2881 } 2882 break; 2883 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 2884 default: 2885 break; 2886 } 2887 } 2888 2889 #ifdef ENABLE_BLE 2890 static void event_handle_le_connection_complete(const uint8_t * packet){ 2891 bd_addr_t addr; 2892 bd_addr_type_t addr_type; 2893 hci_connection_t * conn; 2894 2895 // Connection management 2896 reverse_bd_addr(&packet[8], addr); 2897 addr_type = (bd_addr_type_t)packet[7]; 2898 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 2899 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 2900 2901 #ifdef ENABLE_LE_CENTRAL 2902 // handle error: error is reported only to the initiator -> outgoing connection 2903 if (packet[3]){ 2904 2905 // handle cancelled outgoing connection 2906 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 2907 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 2908 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 2909 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 2910 // reset state 2911 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2912 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2913 // get outgoing connection conn struct for direct connect 2914 conn = gap_get_outgoing_connection(); 2915 } 2916 2917 // outgoing le connection establishment is done 2918 if (conn){ 2919 // remove entry 2920 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2921 btstack_memory_hci_connection_free( conn ); 2922 } 2923 return; 2924 } 2925 #endif 2926 2927 // on success, both hosts receive connection complete event 2928 if (packet[6] == HCI_ROLE_MASTER){ 2929 #ifdef ENABLE_LE_CENTRAL 2930 // if we're master on an le connection, it was an outgoing connection and we're done with it 2931 // note: no hci_connection_t object exists yet for connect with whitelist 2932 if (hci_is_le_connection_type(addr_type)){ 2933 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2934 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2935 } 2936 #endif 2937 } else { 2938 #ifdef ENABLE_LE_PERIPHERAL 2939 // if we're slave, it was an incoming connection, advertisements have stopped 2940 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 2941 #endif 2942 } 2943 2944 // LE connections are auto-accepted, so just create a connection if there isn't one already 2945 if (!conn){ 2946 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 2947 } 2948 2949 // no memory, sorry. 2950 if (!conn){ 2951 return; 2952 } 2953 2954 conn->state = OPEN; 2955 conn->role = packet[6]; 2956 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 2957 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 2958 2959 #ifdef ENABLE_LE_PERIPHERAL 2960 if (packet[6] == HCI_ROLE_SLAVE){ 2961 hci_update_advertisements_enabled_for_current_roles(); 2962 } 2963 #endif 2964 2965 // init unenhanced att bearer mtu 2966 conn->att_connection.mtu = ATT_DEFAULT_MTU; 2967 conn->att_connection.mtu_exchanged = false; 2968 2969 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 2970 2971 // restart timer 2972 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 2973 // btstack_run_loop_add_timer(&conn->timeout); 2974 2975 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 2976 2977 hci_emit_nr_connections_changed(); 2978 } 2979 #endif 2980 2981 #ifdef ENABLE_CLASSIC 2982 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){ 2983 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 2984 // LEVEL_4 is tested by l2cap 2985 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 2986 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 2987 if (level >= LEVEL_3){ 2988 // MITM not possible without keyboard or display 2989 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 2990 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 2991 2992 // MITM possible if one side has keyboard and the other has keyboard or display 2993 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 2994 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 2995 2996 // MITM not possible if one side has only display and other side has no keyboard 2997 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 2998 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 2999 } 3000 // LEVEL 2 requires SSP, which is a given 3001 return true; 3002 } 3003 3004 static bool btstack_is_null(uint8_t * data, uint16_t size){ 3005 uint16_t i; 3006 for (i=0; i < size ; i++){ 3007 if (data[i] != 0) { 3008 return false; 3009 } 3010 } 3011 return true; 3012 } 3013 3014 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3015 // get requested security level 3016 gap_security_level_t requested_security_level = conn->requested_security_level; 3017 if (hci_stack->gap_secure_connections_only_mode){ 3018 requested_security_level = LEVEL_4; 3019 } 3020 3021 // assess security: LEVEL 4 requires SC 3022 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3023 if ((requested_security_level == LEVEL_4) && 3024 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3025 !hci_remote_sc_enabled(conn)){ 3026 log_info("Level 4 required, but SC not supported -> abort"); 3027 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3028 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3029 return; 3030 } 3031 3032 // assess security based on io capabilities 3033 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3034 // responder: fully validate io caps of both sides as well as OOB data 3035 bool security_possible = false; 3036 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3037 3038 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3039 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3040 // so we merge the OOB data availability 3041 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3042 if (conn->classic_oob_c_192 != NULL){ 3043 have_oob_data |= 1; 3044 } 3045 if (conn->classic_oob_c_256 != NULL){ 3046 have_oob_data |= 2; 3047 } 3048 // for up to Level 3, either P-192 as well as P-256 will do 3049 // 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 3050 // if remote does not SC, we should not receive P-256 data either 3051 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3052 security_possible = true; 3053 } 3054 // for Level 4, P-256 is needed 3055 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3056 security_possible = true; 3057 } 3058 #endif 3059 3060 if (security_possible == false){ 3061 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3062 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3063 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3064 return; 3065 } 3066 } else { 3067 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3068 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3069 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3070 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3071 log_info("Level 3+ required, but no input/output -> abort"); 3072 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3073 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3074 return; 3075 } 3076 #endif 3077 #endif 3078 } 3079 3080 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3081 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3082 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3083 } else { 3084 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3085 } 3086 #endif 3087 } 3088 3089 #endif 3090 3091 static void event_handler(uint8_t *packet, uint16_t size){ 3092 3093 uint16_t event_length = packet[1]; 3094 3095 // assert packet is complete 3096 if (size != (event_length + 2u)){ 3097 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3098 return; 3099 } 3100 3101 hci_con_handle_t handle; 3102 hci_connection_t * conn; 3103 int i; 3104 3105 #ifdef ENABLE_CLASSIC 3106 hci_link_type_t link_type; 3107 bd_addr_t addr; 3108 bd_addr_type_t addr_type; 3109 #endif 3110 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3111 hci_iso_stream_t * iso_stream; 3112 le_audio_big_t * big; 3113 le_audio_big_sync_t * big_sync; 3114 #endif 3115 3116 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3117 3118 switch (hci_event_packet_get_type(packet)) { 3119 3120 case HCI_EVENT_COMMAND_COMPLETE: 3121 handle_command_complete_event(packet, size); 3122 break; 3123 3124 case HCI_EVENT_COMMAND_STATUS: 3125 handle_command_status_event(packet, size); 3126 break; 3127 3128 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3129 if (size < 3) return; 3130 uint16_t num_handles = packet[2]; 3131 if (size != (3u + num_handles * 4u)) return; 3132 uint16_t offset = 3; 3133 for (i=0; i<num_handles;i++){ 3134 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3135 offset += 2u; 3136 uint16_t num_packets = little_endian_read_16(packet, offset); 3137 offset += 2u; 3138 3139 conn = hci_connection_for_handle(handle); 3140 if (!conn){ 3141 log_error("hci_number_completed_packet lists unused con handle %u", handle); 3142 continue; 3143 } 3144 3145 if (conn->num_packets_sent >= num_packets){ 3146 conn->num_packets_sent -= num_packets; 3147 } else { 3148 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3149 conn->num_packets_sent = 0; 3150 } 3151 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3152 3153 #ifdef ENABLE_CLASSIC 3154 // For SCO, we do the can_send_now_check here 3155 hci_notify_if_sco_can_send_now(); 3156 #endif 3157 } 3158 break; 3159 } 3160 3161 #ifdef ENABLE_CLASSIC 3162 case HCI_EVENT_FLUSH_OCCURRED: 3163 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3164 handle = hci_event_flush_occurred_get_handle(packet); 3165 conn = hci_connection_for_handle(handle); 3166 if (conn) { 3167 log_info("Flush occurred, disconnect 0x%04x", handle); 3168 conn->state = SEND_DISCONNECT; 3169 } 3170 break; 3171 3172 case HCI_EVENT_INQUIRY_COMPLETE: 3173 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3174 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3175 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3176 hci_emit_event(event, sizeof(event), 1); 3177 } 3178 break; 3179 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3180 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3181 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3182 } 3183 break; 3184 case HCI_EVENT_CONNECTION_REQUEST: 3185 reverse_bd_addr(&packet[2], addr); 3186 link_type = (hci_link_type_t) packet[11]; 3187 3188 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3189 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3190 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3191 bd_addr_copy(hci_stack->decline_addr, addr); 3192 break; 3193 } 3194 3195 if (hci_stack->gap_classic_accept_callback != NULL){ 3196 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3197 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3198 bd_addr_copy(hci_stack->decline_addr, addr); 3199 break; 3200 } 3201 } 3202 3203 // TODO: eval COD 8-10 3204 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3205 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3206 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3207 if (!conn) { 3208 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3209 } 3210 if (!conn) { 3211 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3212 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3213 bd_addr_copy(hci_stack->decline_addr, addr); 3214 hci_run(); 3215 // avoid event to higher layer 3216 return; 3217 } 3218 conn->role = HCI_ROLE_SLAVE; 3219 conn->state = RECEIVED_CONNECTION_REQUEST; 3220 // store info about eSCO 3221 if (link_type == HCI_LINK_TYPE_ESCO){ 3222 conn->remote_supported_features[0] |= 1; 3223 } 3224 hci_run(); 3225 break; 3226 3227 case HCI_EVENT_CONNECTION_COMPLETE: 3228 // Connection management 3229 reverse_bd_addr(&packet[5], addr); 3230 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3231 addr_type = BD_ADDR_TYPE_ACL; 3232 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3233 if (conn) { 3234 if (!packet[2]){ 3235 conn->state = OPEN; 3236 conn->con_handle = little_endian_read_16(packet, 3); 3237 3238 // trigger write supervision timeout if we're master 3239 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3240 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3241 } 3242 3243 // trigger write automatic flush timeout 3244 if (hci_stack->automatic_flush_timeout != 0){ 3245 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3246 } 3247 3248 // restart timer 3249 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3250 btstack_run_loop_add_timer(&conn->timeout); 3251 3252 // trigger remote features for dedicated bonding 3253 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3254 hci_trigger_remote_features_for_connection(conn); 3255 } 3256 3257 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3258 3259 hci_emit_nr_connections_changed(); 3260 } else { 3261 // connection failed 3262 hci_handle_connection_failed(conn, packet[2]); 3263 } 3264 } 3265 break; 3266 3267 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3268 reverse_bd_addr(&packet[5], addr); 3269 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3270 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3271 if (packet[2]){ 3272 // connection failed 3273 if (conn){ 3274 hci_handle_connection_failed(conn, packet[2]); 3275 } 3276 break; 3277 } 3278 if (!conn) { 3279 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3280 } 3281 if (!conn) { 3282 break; 3283 } 3284 conn->state = OPEN; 3285 conn->con_handle = little_endian_read_16(packet, 3); 3286 3287 #ifdef ENABLE_SCO_OVER_HCI 3288 // update SCO 3289 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3290 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3291 } 3292 // trigger can send now 3293 if (hci_have_usb_transport()){ 3294 hci_stack->sco_can_send_now = true; 3295 } 3296 #endif 3297 #ifdef HAVE_SCO_TRANSPORT 3298 // configure sco transport 3299 if (hci_stack->sco_transport != NULL){ 3300 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3301 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3302 } 3303 #endif 3304 break; 3305 3306 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3307 handle = little_endian_read_16(packet, 3); 3308 conn = hci_connection_for_handle(handle); 3309 if (!conn) break; 3310 if (!packet[2]){ 3311 const uint8_t * features = &packet[5]; 3312 hci_handle_remote_features_page_0(conn, features); 3313 3314 // read extended features if possible 3315 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3316 && ((conn->remote_supported_features[0] & 2) != 0)) { 3317 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3318 break; 3319 } 3320 } 3321 hci_handle_remote_features_received(conn); 3322 break; 3323 3324 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3325 handle = little_endian_read_16(packet, 3); 3326 conn = hci_connection_for_handle(handle); 3327 if (!conn) break; 3328 // status = ok, page = 1 3329 if (!packet[2]) { 3330 uint8_t page_number = packet[5]; 3331 uint8_t maximum_page_number = packet[6]; 3332 const uint8_t * features = &packet[7]; 3333 bool done = false; 3334 switch (page_number){ 3335 case 1: 3336 hci_handle_remote_features_page_1(conn, features); 3337 if (maximum_page_number >= 2){ 3338 // get Secure Connections (Controller) from Page 2 if available 3339 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3340 } else { 3341 // otherwise, assume SC (Controller) == SC (Host) 3342 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3343 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3344 } 3345 done = true; 3346 } 3347 break; 3348 case 2: 3349 hci_handle_remote_features_page_2(conn, features); 3350 done = true; 3351 break; 3352 default: 3353 break; 3354 } 3355 if (!done) break; 3356 } 3357 hci_handle_remote_features_received(conn); 3358 break; 3359 3360 case HCI_EVENT_LINK_KEY_REQUEST: 3361 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3362 hci_event_link_key_request_get_bd_addr(packet, addr); 3363 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3364 if (!conn) break; 3365 3366 // lookup link key in db if not cached 3367 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3368 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3369 } 3370 3371 // response sent by hci_run() 3372 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3373 #endif 3374 break; 3375 3376 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3377 hci_event_link_key_request_get_bd_addr(packet, addr); 3378 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3379 if (!conn) break; 3380 3381 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3382 3383 // CVE-2020-26555: ignore NULL link key 3384 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3385 if (btstack_is_null(&packet[8], 16)) break; 3386 3387 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3388 // Change Connection Encryption keeps link key type 3389 if (link_key_type != CHANGED_COMBINATION_KEY){ 3390 conn->link_key_type = link_key_type; 3391 } 3392 3393 // cache link key. link keys stored in little-endian format for legacy reasons 3394 memcpy(&conn->link_key, &packet[8], 16); 3395 3396 // only store link key: 3397 // - if bondable enabled 3398 if (hci_stack->bondable == false) break; 3399 // - if security level sufficient 3400 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3401 // - for SSP, also check if remote side requested bonding as well 3402 if (conn->link_key_type != COMBINATION_KEY){ 3403 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3404 if (!remote_bonding){ 3405 break; 3406 } 3407 } 3408 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3409 break; 3410 } 3411 3412 case HCI_EVENT_PIN_CODE_REQUEST: 3413 hci_event_pin_code_request_get_bd_addr(packet, addr); 3414 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3415 if (!conn) break; 3416 3417 hci_pairing_started(conn, false); 3418 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3419 if (!hci_stack->bondable ){ 3420 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3421 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3422 hci_run(); 3423 return; 3424 } 3425 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3426 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3427 log_info("Level 4 required, but SC not supported -> abort"); 3428 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3429 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3430 hci_run(); 3431 return; 3432 } 3433 break; 3434 3435 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3436 hci_event_io_capability_response_get_bd_addr(packet, addr); 3437 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3438 if (!conn) break; 3439 3440 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3441 hci_pairing_started(conn, true); 3442 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3443 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3444 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3445 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3446 #endif 3447 break; 3448 3449 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3450 hci_event_io_capability_response_get_bd_addr(packet, addr); 3451 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3452 if (!conn) break; 3453 3454 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3455 hci_connection_timestamp(conn); 3456 hci_pairing_started(conn, true); 3457 break; 3458 3459 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3460 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3461 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3462 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3463 if (!conn) break; 3464 3465 hci_connection_timestamp(conn); 3466 3467 hci_pairing_started(conn, true); 3468 3469 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3470 break; 3471 #endif 3472 3473 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3474 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3475 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3476 if (!conn) break; 3477 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3478 if (hci_stack->ssp_auto_accept){ 3479 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3480 }; 3481 } else { 3482 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3483 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3484 // don't forward event to app 3485 hci_run(); 3486 return; 3487 } 3488 break; 3489 3490 case HCI_EVENT_USER_PASSKEY_REQUEST: 3491 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3492 if (hci_stack->ssp_auto_accept){ 3493 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3494 }; 3495 break; 3496 3497 case HCI_EVENT_MODE_CHANGE: 3498 handle = hci_event_mode_change_get_handle(packet); 3499 conn = hci_connection_for_handle(handle); 3500 if (!conn) break; 3501 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3502 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3503 break; 3504 #endif 3505 3506 case HCI_EVENT_ENCRYPTION_CHANGE: 3507 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3508 handle = hci_event_encryption_change_get_connection_handle(packet); 3509 conn = hci_connection_for_handle(handle); 3510 if (!conn) break; 3511 if (hci_event_encryption_change_get_status(packet) == 0u) { 3512 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3513 if (encryption_enabled){ 3514 if (hci_is_le_connection(conn)){ 3515 // For LE, we accept connection as encrypted 3516 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3517 } 3518 #ifdef ENABLE_CLASSIC 3519 else { 3520 3521 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3522 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3523 bool connected_uses_aes_ccm = encryption_enabled == 2; 3524 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3525 log_info("SC during pairing, but only E0 now -> abort"); 3526 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3527 break; 3528 } 3529 3530 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3531 if (connected_uses_aes_ccm){ 3532 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3533 } 3534 3535 #ifdef ENABLE_TESTING_SUPPORT 3536 // work around for issue with PTS dongle 3537 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3538 #endif 3539 // validate encryption key size 3540 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3541 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3542 // already got encryption key size 3543 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3544 } else { 3545 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3546 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3547 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3548 } else { 3549 // if not, pretend everything is perfect 3550 hci_handle_read_encryption_key_size_complete(conn, 16); 3551 } 3552 } 3553 } 3554 #endif 3555 } else { 3556 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3557 } 3558 } else { 3559 uint8_t status = hci_event_encryption_change_get_status(packet); 3560 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3561 conn->bonding_flags &= ~BONDING_DEDICATED; 3562 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3563 conn->bonding_status = status; 3564 } 3565 } 3566 3567 break; 3568 3569 #ifdef ENABLE_CLASSIC 3570 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3571 handle = hci_event_authentication_complete_get_connection_handle(packet); 3572 conn = hci_connection_for_handle(handle); 3573 if (!conn) break; 3574 3575 // clear authentication active flag 3576 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3577 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3578 3579 // authenticated only if auth status == 0 3580 if (hci_event_authentication_complete_get_status(packet) == 0){ 3581 // authenticated 3582 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3583 3584 // If not already encrypted, start encryption 3585 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3586 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3587 break; 3588 } 3589 } 3590 3591 // emit updated security level 3592 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3593 break; 3594 3595 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3596 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3597 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3598 if (!conn) break; 3599 3600 // treat successfully paired connection as authenticated 3601 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3602 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3603 } 3604 3605 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3606 break; 3607 #endif 3608 3609 // HCI_EVENT_DISCONNECTION_COMPLETE 3610 // has been split, to first notify stack before shutting connection down 3611 // see end of function, too. 3612 case HCI_EVENT_DISCONNECTION_COMPLETE: 3613 if (packet[2]) break; // status != 0 3614 handle = little_endian_read_16(packet, 3); 3615 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3616 if (hci_stack->acl_fragmentation_total_size > 0u) { 3617 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3618 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3619 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3620 hci_stack->acl_fragmentation_total_size = 0; 3621 hci_stack->acl_fragmentation_pos = 0; 3622 if (release_buffer){ 3623 hci_release_packet_buffer(); 3624 } 3625 } 3626 } 3627 3628 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3629 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3630 if (hci_stack->iso_fragmentation_total_size > 0u) { 3631 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3632 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3633 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3634 hci_stack->iso_fragmentation_total_size = 0; 3635 hci_stack->iso_fragmentation_pos = 0; 3636 if (release_buffer){ 3637 hci_release_packet_buffer(); 3638 } 3639 } 3640 } 3641 3642 // finalize iso stream if handle matches 3643 iso_stream = hci_iso_stream_for_con_handle(handle); 3644 if (iso_stream != NULL){ 3645 hci_iso_stream_finalize(iso_stream); 3646 break; 3647 } 3648 #endif 3649 3650 conn = hci_connection_for_handle(handle); 3651 if (!conn) break; 3652 #ifdef ENABLE_CLASSIC 3653 // pairing failed if it was ongoing 3654 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3655 #endif 3656 3657 // emit dedicatd bonding event 3658 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3659 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3660 } 3661 3662 // mark connection for shutdown, stop timers, reset state 3663 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3664 hci_connection_stop_timer(conn); 3665 hci_connection_init(conn); 3666 3667 #ifdef ENABLE_BLE 3668 #ifdef ENABLE_LE_PERIPHERAL 3669 // re-enable advertisements for le connections if active 3670 if (hci_is_le_connection(conn)){ 3671 hci_update_advertisements_enabled_for_current_roles(); 3672 } 3673 #endif 3674 #endif 3675 break; 3676 3677 case HCI_EVENT_HARDWARE_ERROR: 3678 log_error("Hardware Error: 0x%02x", packet[2]); 3679 if (hci_stack->hardware_error_callback){ 3680 (*hci_stack->hardware_error_callback)(packet[2]); 3681 } else { 3682 // if no special requests, just reboot stack 3683 hci_power_control_off(); 3684 hci_power_control_on(); 3685 } 3686 break; 3687 3688 #ifdef ENABLE_CLASSIC 3689 case HCI_EVENT_ROLE_CHANGE: 3690 if (packet[2]) break; // status != 0 3691 reverse_bd_addr(&packet[3], addr); 3692 addr_type = BD_ADDR_TYPE_ACL; 3693 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3694 if (!conn) break; 3695 conn->role = packet[9]; 3696 break; 3697 #endif 3698 3699 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3700 // release packet buffer only for asynchronous transport and if there are not further fragments 3701 if (hci_transport_synchronous()) { 3702 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3703 return; // instead of break: to avoid re-entering hci_run() 3704 } 3705 hci_stack->acl_fragmentation_tx_active = 0; 3706 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3707 hci_stack->iso_fragmentation_tx_active = 0; 3708 if (hci_stack->iso_fragmentation_total_size) break; 3709 #endif 3710 if (hci_stack->acl_fragmentation_total_size) break; 3711 hci_release_packet_buffer(); 3712 3713 // L2CAP receives this event via the hci_emit_event below 3714 3715 #ifdef ENABLE_CLASSIC 3716 // For SCO, we do the can_send_now_check here 3717 hci_notify_if_sco_can_send_now(); 3718 #endif 3719 break; 3720 3721 #ifdef ENABLE_CLASSIC 3722 case HCI_EVENT_SCO_CAN_SEND_NOW: 3723 // For SCO, we do the can_send_now_check here 3724 hci_stack->sco_can_send_now = true; 3725 hci_notify_if_sco_can_send_now(); 3726 return; 3727 3728 // explode inquriy results for easier consumption 3729 case HCI_EVENT_INQUIRY_RESULT: 3730 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3731 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3732 gap_inquiry_explode(packet, size); 3733 break; 3734 #endif 3735 3736 #ifdef ENABLE_BLE 3737 case HCI_EVENT_LE_META: 3738 switch (packet[2]){ 3739 #ifdef ENABLE_LE_CENTRAL 3740 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3741 if (!hci_stack->le_scanning_enabled) break; 3742 le_handle_advertisement_report(packet, size); 3743 break; 3744 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3745 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3746 if (!hci_stack->le_scanning_enabled) break; 3747 le_handle_extended_advertisement_report(packet, size); 3748 break; 3749 #endif 3750 #endif 3751 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3752 event_handle_le_connection_complete(packet); 3753 break; 3754 3755 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 3756 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 3757 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 3758 conn = hci_connection_for_handle(handle); 3759 if (!conn) break; 3760 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 3761 break; 3762 3763 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 3764 // connection 3765 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 3766 conn = hci_connection_for_handle(handle); 3767 if (conn) { 3768 // read arguments 3769 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 3770 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 3771 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 3772 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 3773 3774 // validate against current connection parameter range 3775 le_connection_parameter_range_t existing_range; 3776 gap_get_connection_parameter_range(&existing_range); 3777 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 3778 if (update_parameter){ 3779 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 3780 conn->le_conn_interval_min = le_conn_interval_min; 3781 conn->le_conn_interval_max = le_conn_interval_max; 3782 conn->le_conn_latency = le_conn_latency; 3783 conn->le_supervision_timeout = le_supervision_timeout; 3784 } else { 3785 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 3786 } 3787 } 3788 break; 3789 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 3790 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 3791 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 3792 conn = hci_connection_for_handle(handle); 3793 if (conn) { 3794 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 3795 } 3796 break; 3797 #endif 3798 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3799 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 3800 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 3801 iso_stream = hci_iso_stream_for_con_handle(handle); 3802 if (iso_stream){ 3803 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 3804 if (status == ERROR_CODE_SUCCESS){ 3805 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 3806 } else { 3807 hci_iso_stream_finalize(iso_stream); 3808 } 3809 } 3810 break; 3811 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 3812 big = hci_big_for_handle(packet[4]); 3813 if (big != NULL){ 3814 uint8_t status = packet[3]; 3815 if (status == ERROR_CODE_SUCCESS){ 3816 // store bis_con_handles and trigger iso path setup 3817 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 3818 uint8_t i; 3819 for (i=0;i<num_bis;i++){ 3820 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 3821 big->bis_con_handles[i] = bis_handle; 3822 // assign bis handle 3823 btstack_linked_list_iterator_t it; 3824 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3825 while (btstack_linked_list_iterator_has_next(&it)){ 3826 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3827 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 3828 (iso_stream->big_handle == big->big_handle)){ 3829 iso_stream->con_handle = bis_handle; 3830 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 3831 } 3832 } 3833 } 3834 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3835 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3836 big->state_vars.next_bis = 0; 3837 } 3838 } else { 3839 // create BIG failed or has been stopped by us 3840 hci_iso_stream_requested_finalize(big->big_handle); 3841 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3842 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 3843 hci_emit_big_created(big, status); 3844 } else { 3845 hci_emit_big_terminated(big); 3846 } 3847 } 3848 } 3849 break; 3850 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 3851 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 3852 if (big != NULL){ 3853 // finalize associated ISO streams 3854 btstack_linked_list_iterator_t it; 3855 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3856 while (btstack_linked_list_iterator_has_next(&it)){ 3857 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3858 if (iso_stream->big_handle == big->big_handle){ 3859 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->big_handle, iso_stream->con_handle); 3860 btstack_linked_list_iterator_remove(&it); 3861 btstack_memory_hci_iso_stream_free(iso_stream); 3862 } 3863 } 3864 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3865 switch (big->state){ 3866 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3867 hci_emit_big_created(big, big->state_vars.status); 3868 break; 3869 default: 3870 hci_emit_big_terminated(big); 3871 break; 3872 } 3873 } 3874 break; 3875 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 3876 big_sync = hci_big_sync_for_handle(packet[4]); 3877 if (big_sync != NULL){ 3878 uint8_t status = packet[3]; 3879 if (status == ERROR_CODE_SUCCESS){ 3880 // store bis_con_handles and trigger iso path setup 3881 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 3882 uint8_t i; 3883 for (i=0;i<num_bis;i++){ 3884 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 3885 } 3886 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3887 // trigger iso path setup 3888 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3889 big_sync->state_vars.next_bis = 0; 3890 } 3891 } else { 3892 // create BIG Sync failed or has been stopped by us 3893 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3894 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3895 hci_emit_big_sync_created(big_sync, status); 3896 } else { 3897 hci_emit_big_sync_stopped(big_sync); 3898 } 3899 } 3900 } 3901 break; 3902 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 3903 big_sync = hci_big_sync_for_handle(packet[4]); 3904 if (big_sync != NULL){ 3905 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3906 hci_emit_big_sync_stopped(big_sync); 3907 } 3908 break; 3909 #endif 3910 default: 3911 break; 3912 } 3913 break; 3914 #endif 3915 case HCI_EVENT_VENDOR_SPECIFIC: 3916 // Vendor specific commands often create vendor specific event instead of num completed packets 3917 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 3918 switch (hci_stack->manufacturer){ 3919 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 3920 hci_stack->num_cmd_packets = 1; 3921 break; 3922 default: 3923 break; 3924 } 3925 break; 3926 default: 3927 break; 3928 } 3929 3930 handle_event_for_current_stack_state(packet, size); 3931 3932 // notify upper stack 3933 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 3934 3935 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 3936 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 3937 handle = little_endian_read_16(packet, 3); 3938 hci_connection_t * aConn = hci_connection_for_handle(handle); 3939 // discard connection if app did not trigger a reconnect in the event handler 3940 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 3941 hci_shutdown_connection(aConn); 3942 } 3943 } 3944 3945 // execute main loop 3946 hci_run(); 3947 } 3948 3949 #ifdef ENABLE_CLASSIC 3950 3951 #ifdef ENABLE_SCO_OVER_HCI 3952 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 3953 static void sco_schedule_tx(hci_connection_t * conn); 3954 3955 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 3956 log_debug("SCO TX Timeout"); 3957 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 3958 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3959 if (!conn) return; 3960 3961 // trigger send 3962 conn->sco_tx_ready = 1; 3963 // extra packet if CVSD but SCO buffer is too short 3964 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 3965 conn->sco_tx_ready++; 3966 } 3967 hci_notify_if_sco_can_send_now(); 3968 } 3969 3970 3971 #define SCO_TX_AFTER_RX_MS (6) 3972 3973 static void sco_schedule_tx(hci_connection_t * conn){ 3974 3975 uint32_t now = btstack_run_loop_get_time_ms(); 3976 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 3977 int time_delta_ms = sco_tx_ms - now; 3978 3979 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 3980 3981 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 3982 btstack_run_loop_remove_timer(timer); 3983 btstack_run_loop_set_timer(timer, time_delta_ms); 3984 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 3985 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 3986 btstack_run_loop_add_timer(timer); 3987 } 3988 #endif 3989 3990 static void sco_handler(uint8_t * packet, uint16_t size){ 3991 // lookup connection struct 3992 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 3993 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3994 if (!conn) return; 3995 3996 #ifdef ENABLE_SCO_OVER_HCI 3997 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 3998 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 3999 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4000 packet[2] = 0x3c; 4001 memmove(&packet[3], &packet[23], 63); 4002 size = 63; 4003 } 4004 } 4005 4006 if (hci_have_usb_transport()){ 4007 // Nothing to do 4008 } else { 4009 // 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); 4010 if (hci_stack->synchronous_flow_control_enabled == 0){ 4011 uint32_t now = btstack_run_loop_get_time_ms(); 4012 4013 if (!conn->sco_rx_valid){ 4014 // ignore first 10 packets 4015 conn->sco_rx_count++; 4016 // log_debug("sco rx count %u", conn->sco_rx_count); 4017 if (conn->sco_rx_count == 10) { 4018 // use first timestamp as is and pretent it just started 4019 conn->sco_rx_ms = now; 4020 conn->sco_rx_valid = 1; 4021 conn->sco_rx_count = 0; 4022 sco_schedule_tx(conn); 4023 } 4024 } else { 4025 // track expected arrival timme 4026 conn->sco_rx_count++; 4027 conn->sco_rx_ms += 7; 4028 int delta = (int32_t) (now - conn->sco_rx_ms); 4029 if (delta > 0){ 4030 conn->sco_rx_ms++; 4031 } 4032 // log_debug("sco rx %u", conn->sco_rx_ms); 4033 sco_schedule_tx(conn); 4034 } 4035 } 4036 } 4037 #endif 4038 4039 // deliver to app 4040 if (hci_stack->sco_packet_handler) { 4041 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4042 } 4043 4044 #ifdef HAVE_SCO_TRANSPORT 4045 // We can send one packet for each received packet 4046 conn->sco_tx_ready++; 4047 hci_notify_if_sco_can_send_now(); 4048 #endif 4049 4050 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4051 conn->num_packets_completed++; 4052 hci_stack->host_completed_packets = 1; 4053 hci_run(); 4054 #endif 4055 } 4056 #endif 4057 4058 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4059 hci_dump_packet(packet_type, 1, packet, size); 4060 switch (packet_type) { 4061 case HCI_EVENT_PACKET: 4062 event_handler(packet, size); 4063 break; 4064 case HCI_ACL_DATA_PACKET: 4065 acl_handler(packet, size); 4066 break; 4067 #ifdef ENABLE_CLASSIC 4068 case HCI_SCO_DATA_PACKET: 4069 sco_handler(packet, size); 4070 break; 4071 #endif 4072 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4073 case HCI_ISO_DATA_PACKET: 4074 hci_iso_packet_handler(packet, size); 4075 break; 4076 #endif 4077 default: 4078 break; 4079 } 4080 } 4081 4082 /** 4083 * @brief Add event packet handler. 4084 */ 4085 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4086 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4087 } 4088 4089 /** 4090 * @brief Remove event packet handler. 4091 */ 4092 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4093 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4094 } 4095 4096 /** Register HCI packet handlers */ 4097 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4098 hci_stack->acl_packet_handler = handler; 4099 } 4100 4101 #ifdef ENABLE_CLASSIC 4102 /** 4103 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4104 */ 4105 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4106 hci_stack->sco_packet_handler = handler; 4107 } 4108 #endif 4109 4110 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4111 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4112 hci_stack->iso_packet_handler = handler; 4113 } 4114 #endif 4115 4116 static void hci_state_reset(void){ 4117 // no connections yet 4118 hci_stack->connections = NULL; 4119 4120 // keep discoverable/connectable as this has been requested by the client(s) 4121 // hci_stack->discoverable = 0; 4122 // hci_stack->connectable = 0; 4123 // hci_stack->bondable = 1; 4124 // hci_stack->own_addr_type = 0; 4125 4126 // buffer is free 4127 hci_stack->hci_packet_buffer_reserved = false; 4128 4129 // no pending cmds 4130 hci_stack->decline_reason = 0; 4131 4132 hci_stack->secure_connections_active = false; 4133 4134 #ifdef ENABLE_CLASSIC 4135 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4136 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4137 4138 hci_stack->gap_tasks_classic = 4139 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4140 GAP_TASK_SET_CLASS_OF_DEVICE | 4141 GAP_TASK_SET_LOCAL_NAME | 4142 GAP_TASK_SET_EIR_DATA | 4143 GAP_TASK_WRITE_SCAN_ENABLE | 4144 GAP_TASK_WRITE_PAGE_TIMEOUT; 4145 #endif 4146 4147 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4148 hci_stack->classic_read_local_oob_data = false; 4149 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4150 #endif 4151 4152 // LE 4153 #ifdef ENABLE_BLE 4154 memset(hci_stack->le_random_address, 0, 6); 4155 hci_stack->le_random_address_set = 0; 4156 #endif 4157 #ifdef ENABLE_LE_CENTRAL 4158 hci_stack->le_scanning_active = false; 4159 hci_stack->le_scanning_param_update = true; 4160 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4161 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4162 hci_stack->le_whitelist_capacity = 0; 4163 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4164 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4165 #endif 4166 #endif 4167 #ifdef ENABLE_LE_PERIPHERAL 4168 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4169 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4170 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4171 } 4172 if (hci_stack->le_advertisements_data != NULL){ 4173 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4174 } 4175 #endif 4176 } 4177 4178 #ifdef ENABLE_CLASSIC 4179 /** 4180 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4181 */ 4182 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4183 // store and open remote device db 4184 hci_stack->link_key_db = link_key_db; 4185 if (hci_stack->link_key_db) { 4186 hci_stack->link_key_db->open(); 4187 } 4188 } 4189 #endif 4190 4191 void hci_init(const hci_transport_t *transport, const void *config){ 4192 4193 #ifdef HAVE_MALLOC 4194 if (!hci_stack) { 4195 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4196 } 4197 #else 4198 hci_stack = &hci_stack_static; 4199 #endif 4200 memset(hci_stack, 0, sizeof(hci_stack_t)); 4201 4202 // reference to use transport layer implementation 4203 hci_stack->hci_transport = transport; 4204 4205 // reference to used config 4206 hci_stack->config = config; 4207 4208 // setup pointer for outgoing packet buffer 4209 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4210 4211 // max acl payload size defined in config.h 4212 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4213 4214 // register packet handlers with transport 4215 transport->register_packet_handler(&packet_handler); 4216 4217 hci_stack->state = HCI_STATE_OFF; 4218 4219 // class of device 4220 hci_stack->class_of_device = 0x007a020c; // Smartphone 4221 4222 // bondable by default 4223 hci_stack->bondable = 1; 4224 4225 #ifdef ENABLE_CLASSIC 4226 // classic name 4227 hci_stack->local_name = default_classic_name; 4228 4229 // Master slave policy 4230 hci_stack->master_slave_policy = 1; 4231 4232 // Allow Role Switch 4233 hci_stack->allow_role_switch = 1; 4234 4235 // Default / minimum security level = 2 4236 hci_stack->gap_security_level = LEVEL_2; 4237 4238 // Default Security Mode 4 4239 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4240 4241 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4242 hci_stack->gap_required_encyrption_key_size = 7; 4243 4244 // Link Supervision Timeout 4245 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4246 4247 #endif 4248 4249 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4250 hci_stack->ssp_enable = 1; 4251 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4252 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4253 hci_stack->ssp_auto_accept = 1; 4254 4255 // Secure Connections: enable (requires support from Controller) 4256 hci_stack->secure_connections_enable = true; 4257 4258 // voice setting - signed 16 bit pcm data with CVSD over the air 4259 hci_stack->sco_voice_setting = 0x60; 4260 4261 #ifdef ENABLE_LE_CENTRAL 4262 // connection parameter to use for outgoing connections 4263 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4264 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4265 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4266 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4267 hci_stack->le_connection_latency = 4; // 4 4268 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4269 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4270 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4271 4272 // default LE Scanning 4273 hci_stack->le_scan_type = 0x1; // active 4274 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4275 hci_stack->le_scan_window = 0x30; // 30 ms 4276 #endif 4277 4278 #ifdef ENABLE_LE_PERIPHERAL 4279 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4280 #endif 4281 4282 // connection parameter range used to answer connection parameter update requests in l2cap 4283 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4284 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4285 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4286 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4287 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4288 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4289 4290 hci_state_reset(); 4291 } 4292 4293 void hci_deinit(void){ 4294 btstack_run_loop_remove_timer(&hci_stack->timeout); 4295 #ifdef HAVE_MALLOC 4296 if (hci_stack) { 4297 free(hci_stack); 4298 } 4299 #endif 4300 hci_stack = NULL; 4301 4302 #ifdef ENABLE_CLASSIC 4303 disable_l2cap_timeouts = 0; 4304 #endif 4305 } 4306 4307 /** 4308 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4309 */ 4310 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4311 hci_stack->chipset = chipset_driver; 4312 4313 // reset chipset driver - init is also called on power_up 4314 if (hci_stack->chipset && hci_stack->chipset->init){ 4315 hci_stack->chipset->init(hci_stack->config); 4316 } 4317 } 4318 4319 /** 4320 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4321 */ 4322 void hci_set_control(const btstack_control_t *hardware_control){ 4323 // references to used control implementation 4324 hci_stack->control = hardware_control; 4325 // init with transport config 4326 hardware_control->init(hci_stack->config); 4327 } 4328 4329 static void hci_discard_connections(void){ 4330 btstack_linked_list_iterator_t it; 4331 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4332 while (btstack_linked_list_iterator_has_next(&it)){ 4333 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4334 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4335 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4336 hci_shutdown_connection(connection); 4337 } 4338 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4339 while (hci_stack->iso_streams != NULL){ 4340 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4341 } 4342 #endif 4343 } 4344 4345 void hci_close(void){ 4346 4347 #ifdef ENABLE_CLASSIC 4348 // close remote device db 4349 if (hci_stack->link_key_db) { 4350 hci_stack->link_key_db->close(); 4351 } 4352 #endif 4353 4354 hci_discard_connections(); 4355 4356 hci_power_control(HCI_POWER_OFF); 4357 4358 #ifdef HAVE_MALLOC 4359 free(hci_stack); 4360 #endif 4361 hci_stack = NULL; 4362 } 4363 4364 #ifdef HAVE_SCO_TRANSPORT 4365 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4366 hci_stack->sco_transport = sco_transport; 4367 sco_transport->register_packet_handler(&packet_handler); 4368 } 4369 #endif 4370 4371 #ifdef ENABLE_CLASSIC 4372 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4373 // validate ranage and set 4374 if (encryption_key_size < 7) return; 4375 if (encryption_key_size > 16) return; 4376 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4377 } 4378 4379 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4380 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4381 hci_stack->gap_security_mode = security_mode; 4382 return ERROR_CODE_SUCCESS; 4383 } else { 4384 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4385 } 4386 } 4387 4388 gap_security_mode_t gap_get_security_mode(void){ 4389 return hci_stack->gap_security_mode; 4390 } 4391 4392 void gap_set_security_level(gap_security_level_t security_level){ 4393 hci_stack->gap_security_level = security_level; 4394 } 4395 4396 gap_security_level_t gap_get_security_level(void){ 4397 if (hci_stack->gap_secure_connections_only_mode){ 4398 return LEVEL_4; 4399 } 4400 return hci_stack->gap_security_level; 4401 } 4402 4403 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4404 hci_stack->gap_minimal_service_security_level = security_level; 4405 } 4406 4407 void gap_set_secure_connections_only_mode(bool enable){ 4408 hci_stack->gap_secure_connections_only_mode = enable; 4409 } 4410 4411 bool gap_get_secure_connections_only_mode(void){ 4412 return hci_stack->gap_secure_connections_only_mode; 4413 } 4414 #endif 4415 4416 #ifdef ENABLE_CLASSIC 4417 void gap_set_class_of_device(uint32_t class_of_device){ 4418 hci_stack->class_of_device = class_of_device; 4419 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4420 hci_run(); 4421 } 4422 4423 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4424 hci_stack->default_link_policy_settings = default_link_policy_settings; 4425 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4426 hci_run(); 4427 } 4428 4429 void gap_set_allow_role_switch(bool allow_role_switch){ 4430 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4431 } 4432 4433 uint8_t hci_get_allow_role_switch(void){ 4434 return hci_stack->allow_role_switch; 4435 } 4436 4437 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4438 hci_stack->link_supervision_timeout = link_supervision_timeout; 4439 } 4440 4441 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4442 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4443 } 4444 4445 uint16_t hci_automatic_flush_timeout(void){ 4446 return hci_stack->automatic_flush_timeout; 4447 } 4448 4449 void hci_disable_l2cap_timeout_check(void){ 4450 disable_l2cap_timeouts = 1; 4451 } 4452 #endif 4453 4454 #ifndef HAVE_HOST_CONTROLLER_API 4455 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4456 void hci_set_bd_addr(bd_addr_t addr){ 4457 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4458 hci_stack->custom_bd_addr_set = 1; 4459 } 4460 #endif 4461 4462 // State-Module-Driver overview 4463 // state module low-level 4464 // HCI_STATE_OFF off close 4465 // HCI_STATE_INITIALIZING, on open 4466 // HCI_STATE_WORKING, on open 4467 // HCI_STATE_HALTING, on open 4468 // HCI_STATE_SLEEPING, off/sleep close 4469 // HCI_STATE_FALLING_ASLEEP on open 4470 4471 static int hci_power_control_on(void){ 4472 4473 // power on 4474 int err = 0; 4475 if (hci_stack->control && hci_stack->control->on){ 4476 err = (*hci_stack->control->on)(); 4477 } 4478 if (err){ 4479 log_error( "POWER_ON failed"); 4480 hci_emit_hci_open_failed(); 4481 return err; 4482 } 4483 4484 // int chipset driver 4485 if (hci_stack->chipset && hci_stack->chipset->init){ 4486 hci_stack->chipset->init(hci_stack->config); 4487 } 4488 4489 // init transport 4490 if (hci_stack->hci_transport->init){ 4491 hci_stack->hci_transport->init(hci_stack->config); 4492 } 4493 4494 // open transport 4495 err = hci_stack->hci_transport->open(); 4496 if (err){ 4497 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4498 if (hci_stack->control && hci_stack->control->off){ 4499 (*hci_stack->control->off)(); 4500 } 4501 hci_emit_hci_open_failed(); 4502 return err; 4503 } 4504 return 0; 4505 } 4506 4507 static void hci_power_control_off(void){ 4508 4509 log_info("hci_power_control_off"); 4510 4511 // close low-level device 4512 hci_stack->hci_transport->close(); 4513 4514 log_info("hci_power_control_off - hci_transport closed"); 4515 4516 // power off 4517 if (hci_stack->control && hci_stack->control->off){ 4518 (*hci_stack->control->off)(); 4519 } 4520 4521 log_info("hci_power_control_off - control closed"); 4522 4523 hci_stack->state = HCI_STATE_OFF; 4524 } 4525 4526 static void hci_power_control_sleep(void){ 4527 4528 log_info("hci_power_control_sleep"); 4529 4530 #if 0 4531 // don't close serial port during sleep 4532 4533 // close low-level device 4534 hci_stack->hci_transport->close(hci_stack->config); 4535 #endif 4536 4537 // sleep mode 4538 if (hci_stack->control && hci_stack->control->sleep){ 4539 (*hci_stack->control->sleep)(); 4540 } 4541 4542 hci_stack->state = HCI_STATE_SLEEPING; 4543 } 4544 4545 static int hci_power_control_wake(void){ 4546 4547 log_info("hci_power_control_wake"); 4548 4549 // wake on 4550 if (hci_stack->control && hci_stack->control->wake){ 4551 (*hci_stack->control->wake)(); 4552 } 4553 4554 #if 0 4555 // open low-level device 4556 int err = hci_stack->hci_transport->open(hci_stack->config); 4557 if (err){ 4558 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4559 if (hci_stack->control && hci_stack->control->off){ 4560 (*hci_stack->control->off)(); 4561 } 4562 hci_emit_hci_open_failed(); 4563 return err; 4564 } 4565 #endif 4566 4567 return 0; 4568 } 4569 4570 static void hci_power_enter_initializing_state(void){ 4571 // set up state machine 4572 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4573 hci_stack->hci_packet_buffer_reserved = false; 4574 hci_stack->state = HCI_STATE_INITIALIZING; 4575 hci_stack->substate = HCI_INIT_SEND_RESET; 4576 } 4577 4578 static void hci_power_enter_halting_state(void){ 4579 #ifdef ENABLE_BLE 4580 hci_whitelist_free(); 4581 #endif 4582 // see hci_run 4583 hci_stack->state = HCI_STATE_HALTING; 4584 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4585 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4586 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4587 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4588 btstack_run_loop_add_timer(&hci_stack->timeout); 4589 } 4590 4591 // returns error 4592 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4593 int err; 4594 switch (power_mode){ 4595 case HCI_POWER_ON: 4596 err = hci_power_control_on(); 4597 if (err != 0) { 4598 log_error("hci_power_control_on() error %d", err); 4599 return err; 4600 } 4601 hci_power_enter_initializing_state(); 4602 break; 4603 case HCI_POWER_OFF: 4604 // do nothing 4605 break; 4606 case HCI_POWER_SLEEP: 4607 // do nothing (with SLEEP == OFF) 4608 break; 4609 default: 4610 btstack_assert(false); 4611 break; 4612 } 4613 return ERROR_CODE_SUCCESS; 4614 } 4615 4616 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4617 switch (power_mode){ 4618 case HCI_POWER_ON: 4619 // do nothing 4620 break; 4621 case HCI_POWER_OFF: 4622 // no connections yet, just turn it off 4623 hci_power_control_off(); 4624 break; 4625 case HCI_POWER_SLEEP: 4626 // no connections yet, just turn it off 4627 hci_power_control_sleep(); 4628 break; 4629 default: 4630 btstack_assert(false); 4631 break; 4632 } 4633 return ERROR_CODE_SUCCESS; 4634 } 4635 4636 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4637 switch (power_mode){ 4638 case HCI_POWER_ON: 4639 // do nothing 4640 break; 4641 case HCI_POWER_OFF: 4642 hci_power_enter_halting_state(); 4643 break; 4644 case HCI_POWER_SLEEP: 4645 // see hci_run 4646 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4647 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4648 break; 4649 default: 4650 btstack_assert(false); 4651 break; 4652 } 4653 return ERROR_CODE_SUCCESS; 4654 } 4655 4656 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4657 switch (power_mode){ 4658 case HCI_POWER_ON: 4659 hci_power_enter_initializing_state(); 4660 break; 4661 case HCI_POWER_OFF: 4662 // do nothing 4663 break; 4664 case HCI_POWER_SLEEP: 4665 // see hci_run 4666 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4667 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4668 break; 4669 default: 4670 btstack_assert(false); 4671 break; 4672 } 4673 return ERROR_CODE_SUCCESS; 4674 } 4675 4676 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4677 switch (power_mode){ 4678 case HCI_POWER_ON: 4679 hci_power_enter_initializing_state(); 4680 break; 4681 case HCI_POWER_OFF: 4682 hci_power_enter_halting_state(); 4683 break; 4684 case HCI_POWER_SLEEP: 4685 // do nothing 4686 break; 4687 default: 4688 btstack_assert(false); 4689 break; 4690 } 4691 return ERROR_CODE_SUCCESS; 4692 } 4693 4694 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 4695 int err; 4696 switch (power_mode){ 4697 case HCI_POWER_ON: 4698 err = hci_power_control_wake(); 4699 if (err) return err; 4700 hci_power_enter_initializing_state(); 4701 break; 4702 case HCI_POWER_OFF: 4703 hci_power_enter_halting_state(); 4704 break; 4705 case HCI_POWER_SLEEP: 4706 // do nothing 4707 break; 4708 default: 4709 btstack_assert(false); 4710 break; 4711 } 4712 return ERROR_CODE_SUCCESS; 4713 } 4714 4715 int hci_power_control(HCI_POWER_MODE power_mode){ 4716 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 4717 int err = 0; 4718 switch (hci_stack->state){ 4719 case HCI_STATE_OFF: 4720 err = hci_power_control_state_off(power_mode); 4721 break; 4722 case HCI_STATE_INITIALIZING: 4723 err = hci_power_control_state_initializing(power_mode); 4724 break; 4725 case HCI_STATE_WORKING: 4726 err = hci_power_control_state_working(power_mode); 4727 break; 4728 case HCI_STATE_HALTING: 4729 err = hci_power_control_state_halting(power_mode); 4730 break; 4731 case HCI_STATE_FALLING_ASLEEP: 4732 err = hci_power_control_state_falling_asleep(power_mode); 4733 break; 4734 case HCI_STATE_SLEEPING: 4735 err = hci_power_control_state_sleeping(power_mode); 4736 break; 4737 default: 4738 btstack_assert(false); 4739 break; 4740 } 4741 if (err != 0){ 4742 return err; 4743 } 4744 4745 // create internal event 4746 hci_emit_state(); 4747 4748 // trigger next/first action 4749 hci_run(); 4750 4751 return 0; 4752 } 4753 4754 4755 static void hci_halting_run(void) { 4756 4757 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4758 4759 hci_connection_t *connection; 4760 #ifdef ENABLE_BLE 4761 #ifdef ENABLE_LE_PERIPHERAL 4762 bool stop_advertismenets; 4763 #endif 4764 #endif 4765 4766 switch (hci_stack->substate) { 4767 case HCI_HALTING_CLASSIC_STOP: 4768 #ifdef ENABLE_CLASSIC 4769 if (!hci_can_send_command_packet_now()) return; 4770 4771 if (hci_stack->connectable || hci_stack->discoverable){ 4772 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4773 hci_send_cmd(&hci_write_scan_enable, 0); 4774 return; 4775 } 4776 #endif 4777 /* fall through */ 4778 4779 case HCI_HALTING_LE_ADV_STOP: 4780 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4781 4782 #ifdef ENABLE_BLE 4783 #ifdef ENABLE_LE_PERIPHERAL 4784 if (!hci_can_send_command_packet_now()) return; 4785 4786 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 4787 4788 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4789 if (hci_extended_advertising_supported()){ 4790 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4791 btstack_linked_list_iterator_t it; 4792 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4793 // stop all periodic advertisements and check if an extended set is active 4794 while (btstack_linked_list_iterator_has_next(&it)){ 4795 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 4796 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 4797 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 4798 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 4799 return; 4800 } 4801 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 4802 stop_advertismenets = true; 4803 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4804 } 4805 } 4806 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 4807 if (stop_advertismenets){ 4808 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4809 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 4810 return; 4811 } 4812 } 4813 else 4814 #else 4815 { 4816 if (stop_advertismenets) { 4817 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4818 hci_send_cmd(&hci_le_set_advertise_enable, 0); 4819 return; 4820 } 4821 } 4822 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 4823 #endif /* ENABLE_LE_PERIPHERAL */ 4824 #endif /* ENABLE_BLE */ 4825 4826 /* fall through */ 4827 4828 case HCI_HALTING_LE_SCAN_STOP: 4829 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 4830 if (!hci_can_send_command_packet_now()) return; 4831 4832 #ifdef ENABLE_BLE 4833 #ifdef ENABLE_LE_CENTRAL 4834 if (hci_stack->le_scanning_active){ 4835 hci_le_scan_stop(); 4836 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4837 return; 4838 } 4839 #endif 4840 #endif 4841 4842 /* fall through */ 4843 4844 case HCI_HALTING_DISCONNECT_ALL: 4845 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4846 if (!hci_can_send_command_packet_now()) return; 4847 4848 // close all open connections 4849 connection = (hci_connection_t *) hci_stack->connections; 4850 if (connection) { 4851 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 4852 4853 // check state 4854 if (connection->state == SENT_DISCONNECT) return; 4855 connection->state = SENT_DISCONNECT; 4856 4857 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 4858 4859 // finally, send the disconnect command 4860 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4861 return; 4862 } 4863 4864 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4865 // stop BIGs and BIG Syncs 4866 if (hci_stack->le_audio_bigs != NULL){ 4867 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 4868 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 4869 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 4870 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 4871 return; 4872 } 4873 if (hci_stack->le_audio_big_syncs != NULL){ 4874 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 4875 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 4876 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 4877 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 4878 return; 4879 } 4880 #endif 4881 4882 btstack_run_loop_remove_timer(&hci_stack->timeout); 4883 4884 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 4885 log_info("HCI_STATE_HALTING: wait 50 ms"); 4886 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 4887 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 4888 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4889 btstack_run_loop_add_timer(&hci_stack->timeout); 4890 break; 4891 4892 case HCI_HALTING_CLOSE: 4893 // close left over connections (that had not been properly closed before) 4894 hci_discard_connections(); 4895 4896 log_info("HCI_STATE_HALTING, calling off"); 4897 4898 // switch mode 4899 hci_power_control_off(); 4900 4901 log_info("HCI_STATE_HALTING, emitting state"); 4902 hci_emit_state(); 4903 log_info("HCI_STATE_HALTING, done"); 4904 break; 4905 4906 case HCI_HALTING_W4_CLOSE_TIMER: 4907 // keep waiting 4908 4909 break; 4910 default: 4911 break; 4912 } 4913 }; 4914 4915 static void hci_falling_asleep_run(void){ 4916 hci_connection_t * connection; 4917 switch(hci_stack->substate) { 4918 case HCI_FALLING_ASLEEP_DISCONNECT: 4919 log_info("HCI_STATE_FALLING_ASLEEP"); 4920 // close all open connections 4921 connection = (hci_connection_t *) hci_stack->connections; 4922 if (connection){ 4923 4924 // send disconnect 4925 if (!hci_can_send_command_packet_now()) return; 4926 4927 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 4928 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4929 4930 // send disconnected event right away - causes higher layer connections to get closed, too. 4931 hci_shutdown_connection(connection); 4932 return; 4933 } 4934 4935 if (hci_classic_supported()){ 4936 // disable page and inquiry scan 4937 if (!hci_can_send_command_packet_now()) return; 4938 4939 log_info("HCI_STATE_HALTING, disabling inq scans"); 4940 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 4941 4942 // continue in next sub state 4943 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 4944 break; 4945 } 4946 4947 /* fall through */ 4948 4949 case HCI_FALLING_ASLEEP_COMPLETE: 4950 log_info("HCI_STATE_HALTING, calling sleep"); 4951 // switch mode 4952 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 4953 hci_emit_state(); 4954 break; 4955 4956 default: 4957 break; 4958 } 4959 } 4960 4961 #ifdef ENABLE_CLASSIC 4962 4963 static void hci_update_scan_enable(void){ 4964 // 2 = page scan, 1 = inq scan 4965 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 4966 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 4967 hci_run(); 4968 } 4969 4970 void gap_discoverable_control(uint8_t enable){ 4971 if (enable) enable = 1; // normalize argument 4972 4973 if (hci_stack->discoverable == enable){ 4974 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 4975 return; 4976 } 4977 4978 hci_stack->discoverable = enable; 4979 hci_update_scan_enable(); 4980 } 4981 4982 void gap_connectable_control(uint8_t enable){ 4983 if (enable) enable = 1; // normalize argument 4984 4985 // don't emit event 4986 if (hci_stack->connectable == enable) return; 4987 4988 hci_stack->connectable = enable; 4989 hci_update_scan_enable(); 4990 } 4991 #endif 4992 4993 void gap_local_bd_addr(bd_addr_t address_buffer){ 4994 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 4995 } 4996 4997 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4998 static void hci_host_num_completed_packets(void){ 4999 5000 // create packet manually as arrays are not supported and num_commands should not get reduced 5001 hci_reserve_packet_buffer(); 5002 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5003 5004 uint16_t size = 0; 5005 uint16_t num_handles = 0; 5006 packet[size++] = 0x35; 5007 packet[size++] = 0x0c; 5008 size++; // skip param len 5009 size++; // skip num handles 5010 5011 // add { handle, packets } entries 5012 btstack_linked_item_t * it; 5013 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5014 hci_connection_t * connection = (hci_connection_t *) it; 5015 if (connection->num_packets_completed){ 5016 little_endian_store_16(packet, size, connection->con_handle); 5017 size += 2; 5018 little_endian_store_16(packet, size, connection->num_packets_completed); 5019 size += 2; 5020 // 5021 num_handles++; 5022 connection->num_packets_completed = 0; 5023 } 5024 } 5025 5026 packet[2] = size - 3; 5027 packet[3] = num_handles; 5028 5029 hci_stack->host_completed_packets = 0; 5030 5031 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5032 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5033 5034 // release packet buffer for synchronous transport implementations 5035 if (hci_transport_synchronous()){ 5036 hci_release_packet_buffer(); 5037 hci_emit_transport_packet_sent(); 5038 } 5039 } 5040 #endif 5041 5042 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5043 UNUSED(ds); 5044 hci_stack->substate = HCI_HALTING_CLOSE; 5045 // allow packet handlers to defer final shutdown 5046 hci_emit_state(); 5047 hci_run(); 5048 } 5049 5050 static bool hci_run_acl_fragments(void){ 5051 if (hci_stack->acl_fragmentation_total_size > 0u) { 5052 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5053 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5054 if (connection) { 5055 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5056 hci_send_acl_packet_fragments(connection); 5057 return true; 5058 } 5059 } else { 5060 // connection gone -> discard further fragments 5061 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5062 hci_stack->acl_fragmentation_total_size = 0; 5063 hci_stack->acl_fragmentation_pos = 0; 5064 } 5065 } 5066 return false; 5067 } 5068 5069 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5070 static bool hci_run_iso_fragments(void){ 5071 if (hci_stack->iso_fragmentation_total_size > 0u) { 5072 // TODO: flow control 5073 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5074 hci_send_iso_packet_fragments(); 5075 return true; 5076 } 5077 } 5078 return false; 5079 } 5080 #endif 5081 5082 #ifdef ENABLE_CLASSIC 5083 5084 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5085 static bool hci_classic_operation_active(void) { 5086 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5087 return true; 5088 } 5089 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5090 return true; 5091 } 5092 btstack_linked_item_t * it; 5093 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5094 hci_connection_t *connection = (hci_connection_t *) it; 5095 switch (connection->state) { 5096 case SENT_CREATE_CONNECTION: 5097 case SENT_CANCEL_CONNECTION: 5098 case SENT_DISCONNECT: 5099 return true; 5100 default: 5101 break; 5102 } 5103 } 5104 return false; 5105 } 5106 #endif 5107 5108 static bool hci_run_general_gap_classic(void){ 5109 5110 // assert stack is working and classic is active 5111 if (hci_classic_supported() == false) return false; 5112 if (hci_stack->state != HCI_STATE_WORKING) return false; 5113 5114 // decline incoming connections 5115 if (hci_stack->decline_reason){ 5116 uint8_t reason = hci_stack->decline_reason; 5117 hci_stack->decline_reason = 0; 5118 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5119 return true; 5120 } 5121 5122 if (hci_stack->gap_tasks_classic != 0){ 5123 hci_run_gap_tasks_classic(); 5124 return true; 5125 } 5126 5127 // start/stop inquiry 5128 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5129 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5130 if (hci_classic_operation_active() == false) 5131 #endif 5132 { 5133 uint8_t duration = hci_stack->inquiry_state; 5134 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5135 if (hci_stack->inquiry_max_period_length != 0){ 5136 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); 5137 } else { 5138 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5139 } 5140 return true; 5141 } 5142 } 5143 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5144 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5145 hci_send_cmd(&hci_inquiry_cancel); 5146 return true; 5147 } 5148 5149 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5150 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5151 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5152 return true; 5153 } 5154 5155 // remote name request 5156 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5157 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5158 if (hci_classic_operation_active() == false) 5159 #endif 5160 { 5161 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5162 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5163 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5164 return true; 5165 } 5166 } 5167 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5168 // Local OOB data 5169 if (hci_stack->classic_read_local_oob_data){ 5170 hci_stack->classic_read_local_oob_data = false; 5171 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5172 hci_send_cmd(&hci_read_local_extended_oob_data); 5173 } else { 5174 hci_send_cmd(&hci_read_local_oob_data); 5175 } 5176 } 5177 #endif 5178 // pairing 5179 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5180 uint8_t state = hci_stack->gap_pairing_state; 5181 uint8_t pin_code[16]; 5182 switch (state){ 5183 case GAP_PAIRING_STATE_SEND_PIN: 5184 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5185 memset(pin_code, 0, 16); 5186 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5187 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5188 break; 5189 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5190 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5191 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5192 break; 5193 case GAP_PAIRING_STATE_SEND_PASSKEY: 5194 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5195 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5196 break; 5197 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5198 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5199 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5200 break; 5201 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5202 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5203 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5204 break; 5205 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5206 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5207 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5208 break; 5209 default: 5210 break; 5211 } 5212 return true; 5213 } 5214 return false; 5215 } 5216 #endif 5217 5218 #ifdef ENABLE_BLE 5219 5220 #ifdef ENABLE_LE_CENTRAL 5221 static void hci_le_scan_stop(void){ 5222 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5223 if (hci_extended_advertising_supported()) { 5224 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5225 } else 5226 #endif 5227 { 5228 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5229 } 5230 } 5231 #endif 5232 5233 #ifdef ENABLE_LE_PERIPHERAL 5234 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5235 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5236 uint8_t operation = 0; 5237 if (pos == 0){ 5238 // first fragment or complete data 5239 operation |= 1; 5240 } 5241 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5242 // last fragment or complete data 5243 operation |= 2; 5244 } 5245 return operation; 5246 } 5247 #endif 5248 #endif 5249 5250 static bool hci_run_general_gap_le(void){ 5251 5252 btstack_linked_list_iterator_t lit; 5253 5254 // Phase 1: collect what to stop 5255 5256 #ifdef ENABLE_LE_CENTRAL 5257 bool scanning_stop = false; 5258 bool connecting_stop = false; 5259 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5260 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5261 bool periodic_sync_stop = false; 5262 #endif 5263 #endif 5264 #endif 5265 5266 #ifdef ENABLE_LE_PERIPHERAL 5267 bool advertising_stop = false; 5268 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5269 le_advertising_set_t * advertising_stop_set = NULL; 5270 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5271 bool periodic_advertising_stop = false; 5272 #endif 5273 #endif 5274 #endif 5275 5276 // check if own address changes 5277 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5278 5279 // check if whitelist needs modification 5280 bool whitelist_modification_pending = false; 5281 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5282 while (btstack_linked_list_iterator_has_next(&lit)){ 5283 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5284 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5285 whitelist_modification_pending = true; 5286 break; 5287 } 5288 } 5289 5290 // check if resolving list needs modification 5291 bool resolving_list_modification_pending = false; 5292 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5293 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5294 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5295 resolving_list_modification_pending = true; 5296 } 5297 #endif 5298 5299 #ifdef ENABLE_LE_CENTRAL 5300 5301 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5302 // check if periodic advertiser list needs modification 5303 bool periodic_list_modification_pending = false; 5304 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5305 while (btstack_linked_list_iterator_has_next(&lit)){ 5306 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5307 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5308 periodic_list_modification_pending = true; 5309 break; 5310 } 5311 } 5312 #endif 5313 5314 // scanning control 5315 if (hci_stack->le_scanning_active) { 5316 // stop if: 5317 // - parameter change required 5318 // - it's disabled 5319 // - whitelist change required but used for scanning 5320 // - resolving list modified 5321 // - own address changes 5322 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5323 if ((hci_stack->le_scanning_param_update) || 5324 !hci_stack->le_scanning_enabled || 5325 (scanning_uses_whitelist && whitelist_modification_pending) || 5326 resolving_list_modification_pending || 5327 random_address_change){ 5328 5329 scanning_stop = true; 5330 } 5331 } 5332 5333 // connecting control 5334 bool connecting_with_whitelist; 5335 switch (hci_stack->le_connecting_state){ 5336 case LE_CONNECTING_DIRECT: 5337 case LE_CONNECTING_WHITELIST: 5338 // stop connecting if: 5339 // - connecting uses white and whitelist modification pending 5340 // - if it got disabled 5341 // - resolving list modified 5342 // - own address changes 5343 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5344 if ((connecting_with_whitelist && whitelist_modification_pending) || 5345 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5346 resolving_list_modification_pending || 5347 random_address_change) { 5348 5349 connecting_stop = true; 5350 } 5351 break; 5352 default: 5353 break; 5354 } 5355 5356 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5357 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5358 // periodic sync control 5359 bool sync_with_advertiser_list; 5360 switch(hci_stack->le_periodic_sync_state){ 5361 case LE_CONNECTING_DIRECT: 5362 case LE_CONNECTING_WHITELIST: 5363 // stop sync if: 5364 // - sync with advertiser list and advertiser list modification pending 5365 // - if it got disabled 5366 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5367 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5368 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5369 periodic_sync_stop = true; 5370 } 5371 break; 5372 default: 5373 break; 5374 } 5375 #endif 5376 #endif 5377 5378 #endif /* ENABLE_LE_CENTRAL */ 5379 5380 #ifdef ENABLE_LE_PERIPHERAL 5381 // le advertisement control 5382 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5383 // stop if: 5384 // - parameter change required 5385 // - random address used in advertising and changes 5386 // - it's disabled 5387 // - whitelist change required but used for advertisement filter policy 5388 // - resolving list modified 5389 // - own address changes 5390 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5391 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5392 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5393 if (advertising_change || 5394 (advertising_uses_random_address && random_address_change) || 5395 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5396 (advertising_uses_whitelist && whitelist_modification_pending) || 5397 resolving_list_modification_pending || 5398 random_address_change) { 5399 5400 advertising_stop = true; 5401 } 5402 } 5403 5404 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5405 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5406 btstack_linked_list_iterator_t it; 5407 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5408 while (btstack_linked_list_iterator_has_next(&it)){ 5409 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5410 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5411 // stop if: 5412 // - parameter change required 5413 // - random address used in connectable advertising and changes 5414 // - it's disabled 5415 // - whitelist change required but used for advertisement filter policy 5416 // - resolving list modified 5417 // - own address changes 5418 // - advertisement set will be removed 5419 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5420 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5421 bool advertising_uses_random_address = 5422 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5423 advertising_connectable; 5424 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5425 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5426 bool advertising_set_random_address_change = 5427 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5428 bool advertising_set_will_be_removed = 5429 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5430 if (advertising_parameter_change || 5431 (advertising_uses_random_address && advertising_set_random_address_change) || 5432 (advertising_enabled == false) || 5433 (advertising_uses_whitelist && whitelist_modification_pending) || 5434 resolving_list_modification_pending || 5435 advertising_set_will_be_removed) { 5436 5437 advertising_stop = true; 5438 advertising_stop_set = advertising_set; 5439 break; 5440 } 5441 } 5442 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5443 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5444 // stop if: 5445 // - it's disabled 5446 // - parameter change required 5447 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5448 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5449 if ((periodic_enabled == false) || periodic_parameter_change){ 5450 periodic_advertising_stop = true; 5451 advertising_stop_set = advertising_set; 5452 } 5453 } 5454 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5455 } 5456 } 5457 #endif 5458 5459 #endif 5460 5461 5462 // Phase 2: stop everything that should be off during modifications 5463 5464 5465 // 2.1 Outgoing connection 5466 #ifdef ENABLE_LE_CENTRAL 5467 if (connecting_stop){ 5468 hci_send_cmd(&hci_le_create_connection_cancel); 5469 return true; 5470 } 5471 #endif 5472 5473 // 2.2 Scanning 5474 #ifdef ENABLE_LE_CENTRAL 5475 if (scanning_stop){ 5476 hci_stack->le_scanning_active = false; 5477 hci_le_scan_stop(); 5478 return true; 5479 } 5480 5481 // 2.3 Periodic Sync 5482 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5483 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5484 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5485 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5486 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5487 return true; 5488 } 5489 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5490 if (periodic_sync_stop){ 5491 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5492 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5493 return true; 5494 } 5495 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5496 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5497 #endif /* ENABLE_LE_CENTRAL */ 5498 5499 // 2.4 Advertising: legacy, extended, periodic 5500 #ifdef ENABLE_LE_PERIPHERAL 5501 if (advertising_stop){ 5502 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5503 if (hci_extended_advertising_supported()) { 5504 uint8_t advertising_stop_handle; 5505 if (advertising_stop_set != NULL){ 5506 advertising_stop_handle = advertising_stop_set->advertising_handle; 5507 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5508 } else { 5509 advertising_stop_handle = 0; 5510 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5511 } 5512 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5513 const uint16_t durations[] = { 0 }; 5514 const uint16_t max_events[] = { 0 }; 5515 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5516 } else 5517 #endif 5518 { 5519 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5520 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5521 } 5522 return true; 5523 } 5524 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5525 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5526 if (periodic_advertising_stop){ 5527 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5528 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5529 return true; 5530 } 5531 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5532 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5533 #endif /* ENABLE_LE_PERIPHERAL */ 5534 5535 5536 // Phase 3: modify 5537 5538 if (random_address_change){ 5539 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5540 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5541 if (hci_extended_advertising_supported()) { 5542 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5543 } 5544 #endif 5545 { 5546 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5547 } 5548 return true; 5549 } 5550 5551 #ifdef ENABLE_LE_CENTRAL 5552 if (hci_stack->le_scanning_param_update){ 5553 hci_stack->le_scanning_param_update = false; 5554 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5555 if (hci_extended_advertising_supported()){ 5556 // prepare arrays for all PHYs 5557 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5558 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5559 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5560 uint8_t scanning_phys = 1; // LE 1M PHY 5561 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5562 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5563 } else 5564 #endif 5565 { 5566 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5567 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5568 } 5569 return true; 5570 } 5571 #endif 5572 5573 #ifdef ENABLE_LE_PERIPHERAL 5574 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5575 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5576 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5577 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5578 if (hci_extended_advertising_supported()){ 5579 // map advertisment type to advertising event properties 5580 uint16_t adv_event_properties = 0; 5581 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5582 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5583 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5584 } 5585 hci_stack->le_advertising_set_in_current_command = 0; 5586 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5587 0, 5588 adv_event_properties, 5589 hci_stack->le_advertisements_interval_min, 5590 hci_stack->le_advertisements_interval_max, 5591 hci_stack->le_advertisements_channel_map, 5592 hci_stack->le_advertisements_own_addr_type, 5593 hci_stack->le_advertisements_direct_address_type, 5594 hci_stack->le_advertisements_direct_address, 5595 hci_stack->le_advertisements_filter_policy, 5596 0x7f, // tx power: no preference 5597 0x01, // primary adv phy: LE 1M 5598 0, // secondary adv max skip 5599 0, // secondary adv phy 5600 0, // adv sid 5601 0 // scan request notification 5602 ); 5603 } 5604 #endif 5605 { 5606 hci_send_cmd(&hci_le_set_advertising_parameters, 5607 hci_stack->le_advertisements_interval_min, 5608 hci_stack->le_advertisements_interval_max, 5609 hci_stack->le_advertisements_type, 5610 hci_stack->le_advertisements_own_addr_type, 5611 hci_stack->le_advertisements_direct_address_type, 5612 hci_stack->le_advertisements_direct_address, 5613 hci_stack->le_advertisements_channel_map, 5614 hci_stack->le_advertisements_filter_policy); 5615 } 5616 return true; 5617 } 5618 5619 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5620 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5621 uint8_t adv_data_clean[31]; 5622 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5623 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5624 hci_stack->le_advertisements_data_len); 5625 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5626 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5627 if (hci_extended_advertising_supported()){ 5628 hci_stack->le_advertising_set_in_current_command = 0; 5629 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5630 } else 5631 #endif 5632 { 5633 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5634 } 5635 return true; 5636 } 5637 5638 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5639 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5640 uint8_t scan_data_clean[31]; 5641 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5642 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5643 hci_stack->le_scan_response_data_len); 5644 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5645 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5646 if (hci_extended_advertising_supported()){ 5647 hci_stack->le_advertising_set_in_current_command = 0; 5648 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5649 } else 5650 #endif 5651 { 5652 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5653 } 5654 return true; 5655 } 5656 5657 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5658 if (hci_extended_advertising_supported()) { 5659 btstack_linked_list_iterator_t it; 5660 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5661 while (btstack_linked_list_iterator_has_next(&it)){ 5662 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5663 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5664 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5665 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5666 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5667 return true; 5668 } 5669 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5670 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5671 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5672 return true; 5673 } 5674 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5675 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5676 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5677 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5678 advertising_set->advertising_handle, 5679 advertising_set->extended_params.advertising_event_properties, 5680 advertising_set->extended_params.primary_advertising_interval_min, 5681 advertising_set->extended_params.primary_advertising_interval_max, 5682 advertising_set->extended_params.primary_advertising_channel_map, 5683 advertising_set->extended_params.own_address_type, 5684 advertising_set->extended_params.peer_address_type, 5685 advertising_set->extended_params.peer_address, 5686 advertising_set->extended_params.advertising_filter_policy, 5687 advertising_set->extended_params.advertising_tx_power, 5688 advertising_set->extended_params.primary_advertising_phy, 5689 advertising_set->extended_params.secondary_advertising_max_skip, 5690 advertising_set->extended_params.secondary_advertising_phy, 5691 advertising_set->extended_params.advertising_sid, 5692 advertising_set->extended_params.scan_request_notification_enable 5693 ); 5694 return true; 5695 } 5696 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 5697 uint16_t pos = advertising_set->adv_data_pos; 5698 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 5699 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5700 if ((operation & 0x02) != 0){ 5701 // last fragment or complete data 5702 operation |= 2; 5703 advertising_set->adv_data_pos = 0; 5704 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5705 } else { 5706 advertising_set->adv_data_pos += data_to_upload; 5707 } 5708 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5709 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 5710 return true; 5711 } 5712 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 5713 uint16_t pos = advertising_set->scan_data_pos; 5714 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 5715 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5716 if ((operation & 0x02) != 0){ 5717 advertising_set->scan_data_pos = 0; 5718 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5719 } else { 5720 advertising_set->scan_data_pos += data_to_upload; 5721 } 5722 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5723 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 5724 return true; 5725 } 5726 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5727 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 5728 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 5729 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5730 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 5731 advertising_set->advertising_handle, 5732 advertising_set->periodic_params.periodic_advertising_interval_min, 5733 advertising_set->periodic_params.periodic_advertising_interval_max, 5734 advertising_set->periodic_params.periodic_advertising_properties); 5735 return true; 5736 } 5737 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 5738 uint16_t pos = advertising_set->periodic_data_pos; 5739 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 5740 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5741 if ((operation & 0x02) != 0){ 5742 // last fragment or complete data 5743 operation |= 2; 5744 advertising_set->periodic_data_pos = 0; 5745 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 5746 } else { 5747 advertising_set->periodic_data_pos += data_to_upload; 5748 } 5749 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5750 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 5751 return true; 5752 } 5753 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5754 } 5755 } 5756 #endif 5757 5758 #endif 5759 5760 #ifdef ENABLE_LE_CENTRAL 5761 // if connect with whitelist was active and is not cancelled yet, wait until next time 5762 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 5763 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5764 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 5765 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 5766 #endif 5767 #endif 5768 5769 // LE Whitelist Management 5770 if (whitelist_modification_pending){ 5771 // add/remove entries 5772 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5773 while (btstack_linked_list_iterator_has_next(&lit)){ 5774 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5775 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5776 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5777 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 5778 return true; 5779 } 5780 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 5781 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 5782 entry->state |= LE_WHITELIST_ON_CONTROLLER; 5783 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 5784 return true; 5785 } 5786 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 5787 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 5788 btstack_memory_whitelist_entry_free(entry); 5789 } 5790 } 5791 } 5792 5793 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5794 // LE Resolving List Management 5795 if (resolving_list_supported) { 5796 uint16_t i; 5797 switch (hci_stack->le_resolving_list_state) { 5798 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 5799 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 5800 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 5801 return true; 5802 case LE_RESOLVING_LIST_READ_SIZE: 5803 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 5804 hci_send_cmd(&hci_le_read_resolving_list_size); 5805 return true; 5806 case LE_RESOLVING_LIST_SEND_CLEAR: 5807 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 5808 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 5809 sizeof(hci_stack->le_resolving_list_add_entries)); 5810 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 5811 sizeof(hci_stack->le_resolving_list_remove_entries)); 5812 hci_send_cmd(&hci_le_clear_resolving_list); 5813 return true; 5814 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 5815 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5816 uint8_t offset = i >> 3; 5817 uint8_t mask = 1 << (i & 7); 5818 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 5819 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 5820 bd_addr_t peer_identity_addreses; 5821 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5822 sm_key_t peer_irk; 5823 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5824 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5825 5826 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 5827 // trigger whitelist entry 'update' (work around for controller bug) 5828 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5829 while (btstack_linked_list_iterator_has_next(&lit)) { 5830 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 5831 if (entry->address_type != peer_identity_addr_type) continue; 5832 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 5833 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 5834 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 5835 } 5836 #endif 5837 5838 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 5839 peer_identity_addreses); 5840 return true; 5841 } 5842 5843 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 5844 5845 /* fall through */ 5846 5847 case LE_RESOLVING_LIST_ADD_ENTRIES: 5848 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5849 uint8_t offset = i >> 3; 5850 uint8_t mask = 1 << (i & 7); 5851 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 5852 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 5853 bd_addr_t peer_identity_addreses; 5854 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5855 sm_key_t peer_irk; 5856 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5857 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5858 const uint8_t *local_irk = gap_get_persistent_irk(); 5859 // command uses format specifier 'P' that stores 16-byte value without flip 5860 uint8_t local_irk_flipped[16]; 5861 uint8_t peer_irk_flipped[16]; 5862 reverse_128(local_irk, local_irk_flipped); 5863 reverse_128(peer_irk, peer_irk_flipped); 5864 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 5865 peer_irk_flipped, local_irk_flipped); 5866 return true; 5867 } 5868 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5869 break; 5870 5871 default: 5872 break; 5873 } 5874 } 5875 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5876 #endif 5877 5878 #ifdef ENABLE_LE_CENTRAL 5879 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5880 // LE Whitelist Management 5881 if (periodic_list_modification_pending){ 5882 // add/remove entries 5883 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5884 while (btstack_linked_list_iterator_has_next(&lit)){ 5885 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5886 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 5887 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5888 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 5889 return true; 5890 } 5891 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 5892 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5893 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 5894 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 5895 return true; 5896 } 5897 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 5898 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 5899 btstack_memory_periodic_advertiser_list_entry_free(entry); 5900 } 5901 } 5902 } 5903 #endif 5904 #endif 5905 5906 // post-pone all actions until stack is fully working 5907 if (hci_stack->state != HCI_STATE_WORKING) return false; 5908 5909 // advertisements, active scanning, and creating connections requires random address to be set if using private address 5910 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 5911 5912 // Phase 4: restore state 5913 5914 #ifdef ENABLE_LE_CENTRAL 5915 // re-start scanning 5916 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 5917 hci_stack->le_scanning_active = true; 5918 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5919 if (hci_extended_advertising_supported()){ 5920 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, 0, 0, 0); 5921 } else 5922 #endif 5923 { 5924 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 5925 } 5926 return true; 5927 } 5928 #endif 5929 5930 #ifdef ENABLE_LE_CENTRAL 5931 // re-start connecting 5932 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 5933 bd_addr_t null_addr; 5934 memset(null_addr, 0, 6); 5935 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 5936 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 5937 hci_send_cmd(&hci_le_create_connection, 5938 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 5939 hci_stack->le_connection_scan_window, // scan interval: 30 ms 5940 1, // use whitelist 5941 0, // peer address type 5942 null_addr, // peer bd addr 5943 hci_stack->le_connection_own_addr_type, // our addr type: 5944 hci_stack->le_connection_interval_min, // conn interval min 5945 hci_stack->le_connection_interval_max, // conn interval max 5946 hci_stack->le_connection_latency, // conn latency 5947 hci_stack->le_supervision_timeout, // conn latency 5948 hci_stack->le_minimum_ce_length, // min ce length 5949 hci_stack->le_maximum_ce_length // max ce length 5950 ); 5951 return true; 5952 } 5953 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5954 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 5955 switch(hci_stack->le_periodic_sync_request){ 5956 case LE_CONNECTING_DIRECT: 5957 case LE_CONNECTING_WHITELIST: 5958 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 5959 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 5960 hci_stack->le_periodic_sync_options, 5961 hci_stack->le_periodic_sync_advertising_sid, 5962 hci_stack->le_periodic_sync_advertiser_address_type, 5963 hci_stack->le_periodic_sync_advertiser_address, 5964 hci_stack->le_periodic_sync_skip, 5965 hci_stack->le_periodic_sync_timeout, 5966 hci_stack->le_periodic_sync_cte_type); 5967 return true; 5968 default: 5969 break; 5970 } 5971 } 5972 #endif 5973 #endif 5974 5975 #ifdef ENABLE_LE_PERIPHERAL 5976 // re-start advertising 5977 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 5978 // check if advertisements should be enabled given 5979 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 5980 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 5981 5982 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5983 if (hci_extended_advertising_supported()){ 5984 const uint8_t advertising_handles[] = { 0 }; 5985 const uint16_t durations[] = { 0 }; 5986 const uint16_t max_events[] = { 0 }; 5987 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 5988 } else 5989 #endif 5990 { 5991 hci_send_cmd(&hci_le_set_advertise_enable, 1); 5992 } 5993 return true; 5994 } 5995 5996 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5997 if (hci_extended_advertising_supported()) { 5998 btstack_linked_list_iterator_t it; 5999 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6000 while (btstack_linked_list_iterator_has_next(&it)) { 6001 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6002 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6003 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6004 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6005 const uint16_t durations[] = { advertising_set->enable_timeout }; 6006 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6007 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6008 return true; 6009 } 6010 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6011 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6012 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6013 uint8_t enable = 1; 6014 if (advertising_set->periodic_include_adi){ 6015 enable |= 2; 6016 } 6017 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6018 return true; 6019 } 6020 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6021 } 6022 } 6023 #endif 6024 #endif 6025 6026 return false; 6027 } 6028 6029 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6030 static bool hci_run_iso_tasks(void){ 6031 btstack_linked_list_iterator_t it; 6032 6033 // BIG 6034 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6035 while (btstack_linked_list_iterator_has_next(&it)){ 6036 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6037 switch (big->state){ 6038 case LE_AUDIO_BIG_STATE_CREATE: 6039 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6040 hci_send_cmd(&hci_le_create_big, 6041 big->params->big_handle, 6042 big->params->advertising_handle, 6043 big->params->num_bis, 6044 big->params->sdu_interval_us, 6045 big->params->max_sdu, 6046 big->params->max_transport_latency_ms, 6047 big->params->rtn, 6048 big->params->phy, 6049 big->params->packing, 6050 big->params->framing, 6051 big->params->encryption, 6052 big->params->broadcast_code); 6053 return true; 6054 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6055 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6056 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, 0, 0, 0, 0, 0, NULL); 6057 return true; 6058 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6059 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6060 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6061 break; 6062 case LE_AUDIO_BIG_STATE_TERMINATE: 6063 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6064 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6065 return true; 6066 default: 6067 break; 6068 } 6069 } 6070 6071 // BIG Sync 6072 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6073 while (btstack_linked_list_iterator_has_next(&it)){ 6074 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6075 switch (big_sync->state){ 6076 case LE_AUDIO_BIG_STATE_CREATE: 6077 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6078 hci_send_cmd(&hci_le_big_create_sync, 6079 big_sync->params->big_handle, 6080 big_sync->params->sync_handle, 6081 big_sync->params->encryption, 6082 big_sync->params->broadcast_code, 6083 big_sync->params->mse, 6084 big_sync->params->big_sync_timeout_10ms, 6085 big_sync->params->num_bis, 6086 big_sync->params->bis_indices); 6087 return true; 6088 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6089 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6090 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, 0, 0, 0, 0, 0, NULL); 6091 return true; 6092 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6093 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6094 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6095 break; 6096 case LE_AUDIO_BIG_STATE_TERMINATE: 6097 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6098 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6099 return true; 6100 default: 6101 break; 6102 } 6103 } 6104 6105 return false; 6106 } 6107 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6108 #endif 6109 6110 static bool hci_run_general_pending_commands(void){ 6111 btstack_linked_item_t * it; 6112 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6113 hci_connection_t * connection = (hci_connection_t *) it; 6114 6115 switch(connection->state){ 6116 case SEND_CREATE_CONNECTION: 6117 switch(connection->address_type){ 6118 #ifdef ENABLE_CLASSIC 6119 case BD_ADDR_TYPE_ACL: 6120 log_info("sending hci_create_connection"); 6121 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6122 break; 6123 #endif 6124 default: 6125 #ifdef ENABLE_BLE 6126 #ifdef ENABLE_LE_CENTRAL 6127 log_info("sending hci_le_create_connection"); 6128 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6129 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6130 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6131 if (hci_extended_advertising_supported()) { 6132 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6133 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6134 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6135 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6136 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6137 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6138 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6139 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6140 hci_send_cmd(&hci_le_extended_create_connection, 6141 0, // don't use whitelist 6142 hci_stack->le_connection_own_addr_type, // our addr type: 6143 connection->address_type, // peer address type 6144 connection->address, // peer bd addr 6145 1, // initiating PHY - 1M 6146 le_connection_scan_interval, // conn scan interval 6147 le_connection_scan_window, // conn scan windows 6148 le_connection_interval_min, // conn interval min 6149 le_connection_interval_max, // conn interval max 6150 le_connection_latency, // conn latency 6151 le_supervision_timeout, // conn latency 6152 le_minimum_ce_length, // min ce length 6153 le_maximum_ce_length // max ce length 6154 ); } 6155 else 6156 #endif 6157 { 6158 hci_send_cmd(&hci_le_create_connection, 6159 hci_stack->le_connection_scan_interval, // conn scan interval 6160 hci_stack->le_connection_scan_window, // conn scan windows 6161 0, // don't use whitelist 6162 connection->address_type, // peer address type 6163 connection->address, // peer bd addr 6164 hci_stack->le_connection_own_addr_type, // our addr type: 6165 hci_stack->le_connection_interval_min, // conn interval min 6166 hci_stack->le_connection_interval_max, // conn interval max 6167 hci_stack->le_connection_latency, // conn latency 6168 hci_stack->le_supervision_timeout, // conn latency 6169 hci_stack->le_minimum_ce_length, // min ce length 6170 hci_stack->le_maximum_ce_length // max ce length 6171 ); 6172 } 6173 connection->state = SENT_CREATE_CONNECTION; 6174 #endif 6175 #endif 6176 break; 6177 } 6178 return true; 6179 6180 #ifdef ENABLE_CLASSIC 6181 case RECEIVED_CONNECTION_REQUEST: 6182 connection->role = HCI_ROLE_SLAVE; 6183 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6184 log_info("sending hci_accept_connection_request"); 6185 connection->state = ACCEPTED_CONNECTION_REQUEST; 6186 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6187 return true; 6188 } 6189 break; 6190 #endif 6191 6192 #ifdef ENABLE_BLE 6193 #ifdef ENABLE_LE_CENTRAL 6194 case SEND_CANCEL_CONNECTION: 6195 connection->state = SENT_CANCEL_CONNECTION; 6196 hci_send_cmd(&hci_le_create_connection_cancel); 6197 return true; 6198 #endif 6199 #endif 6200 case SEND_DISCONNECT: 6201 connection->state = SENT_DISCONNECT; 6202 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6203 return true; 6204 6205 default: 6206 break; 6207 } 6208 6209 // no further commands if connection is about to get shut down 6210 if (connection->state == SENT_DISCONNECT) continue; 6211 6212 #ifdef ENABLE_CLASSIC 6213 6214 // Handling link key request requires remote supported features 6215 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6216 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6217 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6218 6219 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6220 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6221 if (have_link_key && security_level_sufficient){ 6222 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6223 } else { 6224 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6225 } 6226 return true; 6227 } 6228 6229 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6230 log_info("denying to pin request"); 6231 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6232 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6233 return true; 6234 } 6235 6236 // security assessment requires remote features 6237 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6238 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6239 hci_ssp_assess_security_on_io_cap_request(connection); 6240 // 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 6241 } 6242 6243 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6244 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6245 // set authentication requirements: 6246 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6247 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6248 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6249 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6250 authreq |= 1; 6251 } 6252 bool bonding = hci_stack->bondable; 6253 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6254 // if we have received IO Cap Response, we're in responder role 6255 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6256 if (bonding && !remote_bonding){ 6257 log_info("Remote not bonding, dropping local flag"); 6258 bonding = false; 6259 } 6260 } 6261 if (bonding){ 6262 if (connection->bonding_flags & BONDING_DEDICATED){ 6263 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6264 } else { 6265 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6266 } 6267 } 6268 uint8_t have_oob_data = 0; 6269 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6270 if (connection->classic_oob_c_192 != NULL){ 6271 have_oob_data |= 1; 6272 } 6273 if (connection->classic_oob_c_256 != NULL){ 6274 have_oob_data |= 2; 6275 } 6276 #endif 6277 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6278 return true; 6279 } 6280 6281 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6282 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6283 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6284 return true; 6285 } 6286 6287 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6288 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6289 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6290 const uint8_t zero[16] = { 0 }; 6291 const uint8_t * r_192 = zero; 6292 const uint8_t * c_192 = zero; 6293 const uint8_t * r_256 = zero; 6294 const uint8_t * c_256 = zero; 6295 // verify P-256 OOB 6296 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6297 c_256 = connection->classic_oob_c_256; 6298 if (connection->classic_oob_r_256 != NULL) { 6299 r_256 = connection->classic_oob_r_256; 6300 } 6301 } 6302 // verify P-192 OOB 6303 if ((connection->classic_oob_c_192 != NULL)) { 6304 c_192 = connection->classic_oob_c_192; 6305 if (connection->classic_oob_r_192 != NULL) { 6306 r_192 = connection->classic_oob_r_192; 6307 } 6308 } 6309 6310 // assess security 6311 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6312 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6313 if (need_level_4 && !can_reach_level_4){ 6314 log_info("Level 4 required, but not possible -> abort"); 6315 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6316 // send oob negative reply 6317 c_256 = NULL; 6318 c_192 = NULL; 6319 } 6320 6321 // Reply 6322 if (c_256 != zero) { 6323 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6324 } else if (c_192 != zero){ 6325 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6326 } else { 6327 hci_stack->classic_oob_con_handle = connection->con_handle; 6328 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6329 } 6330 return true; 6331 } 6332 #endif 6333 6334 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6335 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6336 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6337 return true; 6338 } 6339 6340 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6341 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6342 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6343 return true; 6344 } 6345 6346 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6347 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6348 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6349 return true; 6350 } 6351 6352 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6353 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6354 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6355 connection->state = SENT_DISCONNECT; 6356 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6357 return true; 6358 } 6359 6360 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6361 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6362 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6363 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6364 return true; 6365 } 6366 6367 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6368 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6369 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6370 return true; 6371 } 6372 6373 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6374 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6375 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6376 return true; 6377 } 6378 6379 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6380 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6381 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6382 return true; 6383 } 6384 6385 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6386 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6387 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6388 return true; 6389 } 6390 6391 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6392 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6393 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6394 return true; 6395 } 6396 #endif 6397 6398 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6399 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6400 #ifdef ENABLE_CLASSIC 6401 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6402 #endif 6403 if (connection->state != SENT_DISCONNECT){ 6404 connection->state = SENT_DISCONNECT; 6405 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6406 return true; 6407 } 6408 } 6409 6410 #ifdef ENABLE_CLASSIC 6411 uint16_t sniff_min_interval; 6412 switch (connection->sniff_min_interval){ 6413 case 0: 6414 break; 6415 case 0xffff: 6416 connection->sniff_min_interval = 0; 6417 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6418 return true; 6419 default: 6420 sniff_min_interval = connection->sniff_min_interval; 6421 connection->sniff_min_interval = 0; 6422 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6423 return true; 6424 } 6425 6426 if (connection->sniff_subrating_max_latency != 0xffff){ 6427 uint16_t max_latency = connection->sniff_subrating_max_latency; 6428 connection->sniff_subrating_max_latency = 0; 6429 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6430 return true; 6431 } 6432 6433 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6434 uint8_t service_type = (uint8_t) connection->qos_service_type; 6435 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6436 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); 6437 return true; 6438 } 6439 6440 if (connection->request_role != HCI_ROLE_INVALID){ 6441 hci_role_t role = connection->request_role; 6442 connection->request_role = HCI_ROLE_INVALID; 6443 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6444 return true; 6445 } 6446 #endif 6447 6448 if (connection->gap_connection_tasks != 0){ 6449 #ifdef ENABLE_CLASSIC 6450 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6451 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6452 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6453 return true; 6454 } 6455 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6456 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6457 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6458 return true; 6459 } 6460 #endif 6461 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6462 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6463 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6464 return true; 6465 } 6466 } 6467 6468 #ifdef ENABLE_BLE 6469 switch (connection->le_con_parameter_update_state){ 6470 // response to L2CAP CON PARAMETER UPDATE REQUEST 6471 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6472 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6473 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6474 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6475 0x0000, 0xffff); 6476 return true; 6477 case CON_PARAMETER_UPDATE_REPLY: 6478 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6479 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6480 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6481 0x0000, 0xffff); 6482 return true; 6483 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6484 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6485 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6486 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6487 return true; 6488 default: 6489 break; 6490 } 6491 if (connection->le_phy_update_all_phys != 0xffu){ 6492 uint8_t all_phys = connection->le_phy_update_all_phys; 6493 connection->le_phy_update_all_phys = 0xff; 6494 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); 6495 return true; 6496 } 6497 #endif 6498 } 6499 return false; 6500 } 6501 6502 static void hci_run(void){ 6503 6504 // stack state sub statemachines 6505 switch (hci_stack->state) { 6506 case HCI_STATE_INITIALIZING: 6507 hci_initializing_run(); 6508 break; 6509 case HCI_STATE_HALTING: 6510 hci_halting_run(); 6511 break; 6512 case HCI_STATE_FALLING_ASLEEP: 6513 hci_falling_asleep_run(); 6514 break; 6515 default: 6516 break; 6517 } 6518 6519 // allow to run after initialization to working transition 6520 if (hci_stack->state != HCI_STATE_WORKING){ 6521 return; 6522 } 6523 6524 bool done; 6525 6526 // send continuation fragments first, as they block the prepared packet buffer 6527 done = hci_run_acl_fragments(); 6528 if (done) return; 6529 6530 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6531 done = hci_run_iso_fragments(); 6532 if (done) return; 6533 #endif 6534 6535 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6536 // send host num completed packets next as they don't require num_cmd_packets > 0 6537 if (!hci_can_send_comand_packet_transport()) return; 6538 if (hci_stack->host_completed_packets){ 6539 hci_host_num_completed_packets(); 6540 return; 6541 } 6542 #endif 6543 6544 if (!hci_can_send_command_packet_now()) return; 6545 6546 // global/non-connection oriented commands 6547 6548 6549 #ifdef ENABLE_CLASSIC 6550 // general gap classic 6551 done = hci_run_general_gap_classic(); 6552 if (done) return; 6553 #endif 6554 6555 #ifdef ENABLE_BLE 6556 // general gap le 6557 done = hci_run_general_gap_le(); 6558 if (done) return; 6559 6560 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6561 // ISO related tasks, e.g. BIG create/terminate/sync 6562 done = hci_run_iso_tasks(); 6563 if (done) return; 6564 #endif 6565 #endif 6566 6567 // send pending HCI commands 6568 hci_run_general_pending_commands(); 6569 } 6570 6571 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 6572 // house-keeping 6573 6574 #ifdef ENABLE_CLASSIC 6575 bd_addr_t addr; 6576 hci_connection_t * conn; 6577 #endif 6578 #ifdef ENABLE_LE_CENTRAL 6579 uint8_t initiator_filter_policy; 6580 #endif 6581 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6582 uint8_t i; 6583 uint8_t num_cis; 6584 hci_con_handle_t cis_handle; 6585 uint8_t status; 6586 #endif 6587 6588 uint16_t opcode = little_endian_read_16(packet, 0); 6589 switch (opcode) { 6590 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 6591 hci_stack->loopback_mode = packet[3]; 6592 break; 6593 6594 #ifdef ENABLE_CLASSIC 6595 case HCI_OPCODE_HCI_CREATE_CONNECTION: 6596 reverse_bd_addr(&packet[3], addr); 6597 log_info("Create_connection to %s", bd_addr_to_str(addr)); 6598 6599 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 6600 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 6601 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 6602 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 6603 } 6604 6605 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6606 if (!conn) { 6607 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6608 if (!conn) { 6609 // notify client that alloc failed 6610 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6611 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 6612 } 6613 conn->state = SEND_CREATE_CONNECTION; 6614 conn->role = HCI_ROLE_MASTER; 6615 } 6616 6617 log_info("conn state %u", conn->state); 6618 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 6619 switch (conn->state) { 6620 // if connection active exists 6621 case OPEN: 6622 // and OPEN, emit connection complete command 6623 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 6624 // packet not sent to controller 6625 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6626 case RECEIVED_DISCONNECTION_COMPLETE: 6627 // create connection triggered in disconnect complete event, let's do it now 6628 break; 6629 case SEND_CREATE_CONNECTION: 6630 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 6631 if (hci_classic_operation_active()){ 6632 return ERROR_CODE_SUCCESS; 6633 } 6634 #endif 6635 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 6636 break; 6637 default: 6638 // otherwise, just ignore as it is already in the open process 6639 // packet not sent to controller 6640 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6641 } 6642 conn->state = SENT_CREATE_CONNECTION; 6643 6644 // track outgoing connection 6645 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 6646 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 6647 break; 6648 6649 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 6650 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 6651 // setup_synchronous_connection? Voice setting at offset 22 6652 // TODO: compare to current setting if sco connection already active 6653 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 6654 break; 6655 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 6656 // accept_synchronous_connection? Voice setting at offset 18 6657 // TODO: compare to current setting if sco connection already active 6658 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 6659 // track outgoing connection 6660 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 6661 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 6662 break; 6663 #endif 6664 #endif 6665 6666 #ifdef ENABLE_BLE 6667 #ifdef ENABLE_LE_CENTRAL 6668 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 6669 // white list used? 6670 initiator_filter_policy = packet[7]; 6671 switch (initiator_filter_policy) { 6672 case 0: 6673 // whitelist not used 6674 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 6675 break; 6676 case 1: 6677 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 6678 break; 6679 default: 6680 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 6681 break; 6682 } 6683 // track outgoing connection 6684 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 6685 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 6686 break; 6687 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 6688 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 6689 break; 6690 #endif 6691 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6692 #ifdef ENABLE_LE_CENTRAL 6693 case HCI_OPCODE_HCI_LE_CREATE_CIS: 6694 status = ERROR_CODE_SUCCESS; 6695 num_cis = packet[3]; 6696 // setup hci_iso_streams 6697 for (i=0;i<num_cis;i++){ 6698 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 4 + (4 * i)); 6699 status = hci_iso_stream_create(cis_handle, 0xff); 6700 if (status != ERROR_CODE_SUCCESS) { 6701 break; 6702 } 6703 } 6704 // free structs on error 6705 if (status != ERROR_CODE_SUCCESS){ 6706 hci_iso_stream_requested_finalize(0xff); 6707 return status; 6708 } 6709 break; 6710 #endif /* ENABLE_LE_CENTRAL */ 6711 #ifdef ENABLE_LE_PERIPHERAL 6712 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 6713 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 3); 6714 status = hci_iso_stream_create(cis_handle, 0xff); 6715 if (status != ERROR_CODE_SUCCESS){ 6716 return status; 6717 } 6718 break; 6719 #endif /* ENABLE_LE_PERIPHERAL */ 6720 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6721 #endif /* ENABLE_BLE */ 6722 default: 6723 break; 6724 } 6725 6726 hci_stack->num_cmd_packets--; 6727 6728 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 6729 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 6730 if (err != 0){ 6731 return ERROR_CODE_HARDWARE_FAILURE; 6732 } 6733 return ERROR_CODE_SUCCESS; 6734 } 6735 6736 // disconnect because of security block 6737 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 6738 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6739 if (!connection) return; 6740 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 6741 } 6742 6743 6744 // Configure Secure Simple Pairing 6745 6746 #ifdef ENABLE_CLASSIC 6747 6748 // enable will enable SSP during init 6749 void gap_ssp_set_enable(int enable){ 6750 hci_stack->ssp_enable = enable; 6751 } 6752 6753 static int hci_local_ssp_activated(void){ 6754 return gap_ssp_supported() && hci_stack->ssp_enable; 6755 } 6756 6757 // if set, BTstack will respond to io capability request using authentication requirement 6758 void gap_ssp_set_io_capability(int io_capability){ 6759 hci_stack->ssp_io_capability = io_capability; 6760 } 6761 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 6762 hci_stack->ssp_authentication_requirement = authentication_requirement; 6763 } 6764 6765 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 6766 void gap_ssp_set_auto_accept(int auto_accept){ 6767 hci_stack->ssp_auto_accept = auto_accept; 6768 } 6769 6770 void gap_secure_connections_enable(bool enable){ 6771 hci_stack->secure_connections_enable = enable; 6772 } 6773 bool gap_secure_connections_active(void){ 6774 return hci_stack->secure_connections_active; 6775 } 6776 6777 #endif 6778 6779 // va_list part of hci_send_cmd 6780 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 6781 if (!hci_can_send_command_packet_now()){ 6782 log_error("hci_send_cmd called but cannot send packet now"); 6783 return ERROR_CODE_COMMAND_DISALLOWED; 6784 } 6785 6786 // for HCI INITIALIZATION 6787 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 6788 hci_stack->last_cmd_opcode = cmd->opcode; 6789 6790 hci_reserve_packet_buffer(); 6791 uint8_t * packet = hci_stack->hci_packet_buffer; 6792 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 6793 uint8_t status = hci_send_cmd_packet(packet, size); 6794 6795 // release packet buffer on error or for synchronous transport implementations 6796 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 6797 hci_release_packet_buffer(); 6798 hci_emit_transport_packet_sent(); 6799 } 6800 6801 return status; 6802 } 6803 6804 /** 6805 * pre: numcmds >= 0 - it's allowed to send a command to the controller 6806 */ 6807 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 6808 va_list argptr; 6809 va_start(argptr, cmd); 6810 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 6811 va_end(argptr); 6812 return status; 6813 } 6814 6815 // Create various non-HCI events. 6816 // TODO: generalize, use table similar to hci_create_command 6817 6818 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 6819 // dump packet 6820 if (dump) { 6821 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 6822 } 6823 6824 // dispatch to all event handlers 6825 btstack_linked_list_iterator_t it; 6826 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 6827 while (btstack_linked_list_iterator_has_next(&it)){ 6828 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 6829 entry->callback(HCI_EVENT_PACKET, 0, event, size); 6830 } 6831 } 6832 6833 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 6834 if (!hci_stack->acl_packet_handler) return; 6835 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 6836 } 6837 6838 #ifdef ENABLE_CLASSIC 6839 static void hci_notify_if_sco_can_send_now(void){ 6840 // notify SCO sender if waiting 6841 if (!hci_stack->sco_waiting_for_can_send_now) return; 6842 if (hci_can_send_sco_packet_now()){ 6843 hci_stack->sco_waiting_for_can_send_now = 0; 6844 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 6845 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 6846 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 6847 } 6848 } 6849 6850 // parsing end emitting has been merged to reduce code size 6851 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 6852 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 6853 6854 uint8_t * eir_data; 6855 ad_context_t context; 6856 const uint8_t * name; 6857 uint8_t name_len; 6858 6859 if (size < 3) return; 6860 6861 int event_type = hci_event_packet_get_type(packet); 6862 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 6863 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 6864 6865 switch (event_type){ 6866 case HCI_EVENT_INQUIRY_RESULT: 6867 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6868 if (size != (3 + (num_responses * 14))) return; 6869 break; 6870 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6871 if (size != 257) return; 6872 if (num_responses != 1) return; 6873 break; 6874 default: 6875 return; 6876 } 6877 6878 // event[1] is set at the end 6879 int i; 6880 for (i=0; i<num_responses;i++){ 6881 memset(event, 0, sizeof(event)); 6882 event[0] = GAP_EVENT_INQUIRY_RESULT; 6883 uint8_t event_size = 27; // if name is not set by EIR 6884 6885 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 6886 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 6887 (void)memcpy(&event[9], 6888 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 6889 3); // class of device 6890 (void)memcpy(&event[12], 6891 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 6892 2); // clock offset 6893 6894 switch (event_type){ 6895 case HCI_EVENT_INQUIRY_RESULT: 6896 // 14,15,16,17 = 0, size 18 6897 break; 6898 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6899 event[14] = 1; 6900 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6901 // 16,17 = 0, size 18 6902 break; 6903 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6904 event[14] = 1; 6905 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6906 // EIR packets only contain a single inquiry response 6907 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 6908 name = NULL; 6909 // Iterate over EIR data 6910 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 6911 uint8_t data_type = ad_iterator_get_data_type(&context); 6912 uint8_t data_size = ad_iterator_get_data_len(&context); 6913 const uint8_t * data = ad_iterator_get_data(&context); 6914 // Prefer Complete Local Name over Shortened Local Name 6915 switch (data_type){ 6916 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 6917 if (name) continue; 6918 /* fall through */ 6919 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 6920 name = data; 6921 name_len = data_size; 6922 break; 6923 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 6924 if (data_size != 8) break; 6925 event[16] = 1; 6926 memcpy(&event[17], data, 8); 6927 break; 6928 default: 6929 break; 6930 } 6931 } 6932 if (name){ 6933 event[25] = 1; 6934 // truncate name if needed 6935 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 6936 event[26] = len; 6937 (void)memcpy(&event[27], name, len); 6938 event_size += len; 6939 } 6940 break; 6941 default: 6942 return; 6943 } 6944 event[1] = event_size - 2; 6945 hci_emit_event(event, event_size, 1); 6946 } 6947 } 6948 #endif 6949 6950 void hci_emit_state(void){ 6951 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 6952 uint8_t event[3]; 6953 event[0] = BTSTACK_EVENT_STATE; 6954 event[1] = sizeof(event) - 2u; 6955 event[2] = hci_stack->state; 6956 hci_emit_event(event, sizeof(event), 1); 6957 } 6958 6959 #ifdef ENABLE_CLASSIC 6960 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 6961 uint8_t event[13]; 6962 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 6963 event[1] = sizeof(event) - 2; 6964 event[2] = status; 6965 little_endian_store_16(event, 3, con_handle); 6966 reverse_bd_addr(address, &event[5]); 6967 event[11] = 1; // ACL connection 6968 event[12] = 0; // encryption disabled 6969 hci_emit_event(event, sizeof(event), 1); 6970 } 6971 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 6972 if (disable_l2cap_timeouts) return; 6973 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 6974 uint8_t event[4]; 6975 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 6976 event[1] = sizeof(event) - 2; 6977 little_endian_store_16(event, 2, conn->con_handle); 6978 hci_emit_event(event, sizeof(event), 1); 6979 } 6980 #endif 6981 6982 #ifdef ENABLE_BLE 6983 #ifdef ENABLE_LE_CENTRAL 6984 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){ 6985 uint8_t event[21]; 6986 event[0] = HCI_EVENT_LE_META; 6987 event[1] = sizeof(event) - 2u; 6988 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 6989 event[3] = status; 6990 little_endian_store_16(event, 4, con_handle); 6991 event[6] = 0; // TODO: role 6992 event[7] = address_type; 6993 reverse_bd_addr(address, &event[8]); 6994 little_endian_store_16(event, 14, 0); // interval 6995 little_endian_store_16(event, 16, 0); // latency 6996 little_endian_store_16(event, 18, 0); // supervision timeout 6997 event[20] = 0; // master clock accuracy 6998 hci_emit_event(event, sizeof(event), 1); 6999 } 7000 #endif 7001 #endif 7002 7003 static void hci_emit_transport_packet_sent(void){ 7004 // notify upper stack that it might be possible to send again 7005 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7006 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7007 } 7008 7009 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7010 uint8_t event[6]; 7011 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7012 event[1] = sizeof(event) - 2u; 7013 event[2] = 0; // status = OK 7014 little_endian_store_16(event, 3, con_handle); 7015 event[5] = reason; 7016 hci_emit_event(event, sizeof(event), 1); 7017 } 7018 7019 static void hci_emit_nr_connections_changed(void){ 7020 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7021 uint8_t event[3]; 7022 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7023 event[1] = sizeof(event) - 2u; 7024 event[2] = nr_hci_connections(); 7025 hci_emit_event(event, sizeof(event), 1); 7026 } 7027 7028 static void hci_emit_hci_open_failed(void){ 7029 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7030 uint8_t event[2]; 7031 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7032 event[1] = sizeof(event) - 2u; 7033 hci_emit_event(event, sizeof(event), 1); 7034 } 7035 7036 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7037 log_info("hci_emit_dedicated_bonding_result %u ", status); 7038 uint8_t event[9]; 7039 int pos = 0; 7040 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7041 event[pos++] = sizeof(event) - 2u; 7042 event[pos++] = status; 7043 reverse_bd_addr(address, &event[pos]); 7044 hci_emit_event(event, sizeof(event), 1); 7045 } 7046 7047 7048 #ifdef ENABLE_CLASSIC 7049 7050 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7051 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7052 uint8_t event[5]; 7053 int pos = 0; 7054 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7055 event[pos++] = sizeof(event) - 2; 7056 little_endian_store_16(event, 2, con_handle); 7057 pos += 2; 7058 event[pos++] = level; 7059 hci_emit_event(event, sizeof(event), 1); 7060 } 7061 7062 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7063 if (!connection) return LEVEL_0; 7064 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7065 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7066 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7067 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7068 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7069 // LEVEL 4 always requires 128 bit encrytion key size 7070 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7071 security_level = LEVEL_3; 7072 } 7073 return security_level; 7074 } 7075 7076 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7077 uint8_t event[4]; 7078 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7079 event[1] = sizeof(event) - 2; 7080 event[2] = discoverable; 7081 event[3] = connectable; 7082 hci_emit_event(event, sizeof(event), 1); 7083 } 7084 7085 // query if remote side supports eSCO 7086 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7087 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7088 if (!connection) return false; 7089 return (connection->remote_supported_features[0] & 1) != 0; 7090 } 7091 7092 static bool hci_ssp_supported(hci_connection_t * connection){ 7093 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7094 return (connection->bonding_flags & mask) == mask; 7095 } 7096 7097 // query if remote side supports SSP 7098 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7099 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7100 if (!connection) return false; 7101 return hci_ssp_supported(connection) ? 1 : 0; 7102 } 7103 7104 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7105 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7106 } 7107 7108 /** 7109 * Check if remote supported features query has completed 7110 */ 7111 bool hci_remote_features_available(hci_con_handle_t handle){ 7112 hci_connection_t * connection = hci_connection_for_handle(handle); 7113 if (!connection) return false; 7114 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7115 } 7116 7117 /** 7118 * Trigger remote supported features query 7119 */ 7120 7121 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7122 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7123 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7124 } 7125 } 7126 7127 void hci_remote_features_query(hci_con_handle_t con_handle){ 7128 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7129 if (!connection) return; 7130 hci_trigger_remote_features_for_connection(connection); 7131 hci_run(); 7132 } 7133 7134 // GAP API 7135 /** 7136 * @bbrief enable/disable bonding. default is enabled 7137 * @praram enabled 7138 */ 7139 void gap_set_bondable_mode(int enable){ 7140 hci_stack->bondable = enable ? 1 : 0; 7141 } 7142 /** 7143 * @brief Get bondable mode. 7144 * @return 1 if bondable 7145 */ 7146 int gap_get_bondable_mode(void){ 7147 return hci_stack->bondable; 7148 } 7149 7150 /** 7151 * @brief map link keys to security levels 7152 */ 7153 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7154 switch (link_key_type){ 7155 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7156 return LEVEL_4; 7157 case COMBINATION_KEY: 7158 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7159 return LEVEL_3; 7160 default: 7161 return LEVEL_2; 7162 } 7163 } 7164 7165 /** 7166 * @brief map link keys to secure connection yes/no 7167 */ 7168 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7169 switch (link_key_type){ 7170 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7171 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7172 return true; 7173 default: 7174 return false; 7175 } 7176 } 7177 7178 /** 7179 * @brief map link keys to authenticated 7180 */ 7181 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7182 switch (link_key_type){ 7183 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7184 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7185 return true; 7186 default: 7187 return false; 7188 } 7189 } 7190 7191 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7192 log_info("gap_mitm_protection_required_for_security_level %u", level); 7193 return level > LEVEL_2; 7194 } 7195 7196 /** 7197 * @brief get current security level 7198 */ 7199 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7200 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7201 if (!connection) return LEVEL_0; 7202 return gap_security_level_for_connection(connection); 7203 } 7204 7205 /** 7206 * @brief request connection to device to 7207 * @result GAP_AUTHENTICATION_RESULT 7208 */ 7209 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7210 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7211 if (!connection){ 7212 hci_emit_security_level(con_handle, LEVEL_0); 7213 return; 7214 } 7215 7216 btstack_assert(hci_is_le_connection(connection) == false); 7217 7218 // 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) 7219 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7220 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7221 requested_level = LEVEL_4; 7222 } 7223 7224 gap_security_level_t current_level = gap_security_level(con_handle); 7225 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7226 requested_level, connection->requested_security_level, current_level); 7227 7228 // authentication active if authentication request was sent or planned level > 0 7229 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7230 if (authentication_active){ 7231 // authentication already active 7232 if (connection->requested_security_level < requested_level){ 7233 // increase requested level as new level is higher 7234 // TODO: handle re-authentication when done 7235 connection->requested_security_level = requested_level; 7236 } 7237 } else { 7238 // no request active, notify if security sufficient 7239 if (requested_level <= current_level){ 7240 hci_emit_security_level(con_handle, current_level); 7241 return; 7242 } 7243 7244 // store request 7245 connection->requested_security_level = requested_level; 7246 7247 // start to authenticate connection 7248 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7249 7250 // request remote features if not already active, also trigger hci_run 7251 hci_remote_features_query(con_handle); 7252 } 7253 } 7254 7255 /** 7256 * @brief start dedicated bonding with device. disconnect after bonding 7257 * @param device 7258 * @param request MITM protection 7259 * @result GAP_DEDICATED_BONDING_COMPLETE 7260 */ 7261 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7262 7263 // create connection state machine 7264 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7265 7266 if (!connection){ 7267 return BTSTACK_MEMORY_ALLOC_FAILED; 7268 } 7269 7270 // delete linkn key 7271 gap_drop_link_key_for_bd_addr(device); 7272 7273 // configure LEVEL_2/3, dedicated bonding 7274 connection->state = SEND_CREATE_CONNECTION; 7275 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7276 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7277 connection->bonding_flags = BONDING_DEDICATED; 7278 7279 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7280 7281 // handle: connnection failure (connection complete != ok) 7282 // handle: authentication failure 7283 // handle: disconnect on done 7284 7285 hci_run(); 7286 7287 return 0; 7288 } 7289 7290 void gap_set_local_name(const char * local_name){ 7291 hci_stack->local_name = local_name; 7292 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7293 // also update EIR if not set by user 7294 if (hci_stack->eir_data == NULL){ 7295 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7296 } 7297 hci_run(); 7298 } 7299 #endif 7300 7301 7302 #ifdef ENABLE_BLE 7303 7304 #ifdef ENABLE_LE_CENTRAL 7305 void gap_start_scan(void){ 7306 hci_stack->le_scanning_enabled = true; 7307 hci_run(); 7308 } 7309 7310 void gap_stop_scan(void){ 7311 hci_stack->le_scanning_enabled = false; 7312 hci_run(); 7313 } 7314 7315 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7316 hci_stack->le_scan_type = scan_type; 7317 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7318 hci_stack->le_scan_interval = scan_interval; 7319 hci_stack->le_scan_window = scan_window; 7320 hci_stack->le_scanning_param_update = true; 7321 hci_run(); 7322 } 7323 7324 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7325 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7326 } 7327 7328 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7329 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7330 if (!conn){ 7331 // disallow if le connection is already outgoing 7332 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7333 log_error("le connection already active"); 7334 return ERROR_CODE_COMMAND_DISALLOWED; 7335 } 7336 7337 log_info("gap_connect: no connection exists yet, creating context"); 7338 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7339 if (!conn){ 7340 // notify client that alloc failed 7341 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7342 log_info("gap_connect: failed to alloc hci_connection_t"); 7343 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7344 } 7345 7346 // set le connecting state 7347 if (hci_is_le_connection_type(addr_type)){ 7348 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7349 } 7350 7351 conn->state = SEND_CREATE_CONNECTION; 7352 log_info("gap_connect: send create connection next"); 7353 hci_run(); 7354 return ERROR_CODE_SUCCESS; 7355 } 7356 7357 if (!hci_is_le_connection(conn) || 7358 (conn->state == SEND_CREATE_CONNECTION) || 7359 (conn->state == SENT_CREATE_CONNECTION)) { 7360 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7361 log_error("gap_connect: classic connection or connect is already being created"); 7362 return GATT_CLIENT_IN_WRONG_STATE; 7363 } 7364 7365 // check if connection was just disconnected 7366 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7367 log_info("gap_connect: send create connection (again)"); 7368 conn->state = SEND_CREATE_CONNECTION; 7369 hci_run(); 7370 return ERROR_CODE_SUCCESS; 7371 } 7372 7373 log_info("gap_connect: context exists with state %u", conn->state); 7374 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7375 hci_run(); 7376 return ERROR_CODE_SUCCESS; 7377 } 7378 7379 // @assumption: only a single outgoing LE Connection exists 7380 static hci_connection_t * gap_get_outgoing_connection(void){ 7381 btstack_linked_item_t *it; 7382 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7383 hci_connection_t * conn = (hci_connection_t *) it; 7384 if (!hci_is_le_connection(conn)) continue; 7385 switch (conn->state){ 7386 case SEND_CREATE_CONNECTION: 7387 case SENT_CREATE_CONNECTION: 7388 case SENT_CANCEL_CONNECTION: 7389 return conn; 7390 default: 7391 break; 7392 }; 7393 } 7394 return NULL; 7395 } 7396 7397 uint8_t gap_connect_cancel(void){ 7398 hci_connection_t * conn; 7399 switch (hci_stack->le_connecting_request){ 7400 case LE_CONNECTING_IDLE: 7401 break; 7402 case LE_CONNECTING_WHITELIST: 7403 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7404 hci_run(); 7405 break; 7406 case LE_CONNECTING_DIRECT: 7407 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7408 conn = gap_get_outgoing_connection(); 7409 if (conn == NULL){ 7410 hci_run(); 7411 } else { 7412 switch (conn->state){ 7413 case SEND_CREATE_CONNECTION: 7414 // skip sending create connection and emit event instead 7415 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7416 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7417 btstack_memory_hci_connection_free( conn ); 7418 break; 7419 case SENT_CREATE_CONNECTION: 7420 // request to send cancel connection 7421 conn->state = SEND_CANCEL_CONNECTION; 7422 hci_run(); 7423 break; 7424 default: 7425 break; 7426 } 7427 } 7428 break; 7429 default: 7430 btstack_unreachable(); 7431 break; 7432 } 7433 return ERROR_CODE_SUCCESS; 7434 } 7435 7436 /** 7437 * @brief Set connection parameters for outgoing connections 7438 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7439 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7440 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7441 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7442 * @param conn_latency, default: 4 7443 * @param supervision_timeout (unit: 10ms), default: 720 ms 7444 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7445 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7446 */ 7447 7448 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7449 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7450 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7451 hci_stack->le_connection_scan_interval = conn_scan_interval; 7452 hci_stack->le_connection_scan_window = conn_scan_window; 7453 hci_stack->le_connection_interval_min = conn_interval_min; 7454 hci_stack->le_connection_interval_max = conn_interval_max; 7455 hci_stack->le_connection_latency = conn_latency; 7456 hci_stack->le_supervision_timeout = supervision_timeout; 7457 hci_stack->le_minimum_ce_length = min_ce_length; 7458 hci_stack->le_maximum_ce_length = max_ce_length; 7459 } 7460 #endif 7461 7462 /** 7463 * @brief Updates the connection parameters for a given LE connection 7464 * @param handle 7465 * @param conn_interval_min (unit: 1.25ms) 7466 * @param conn_interval_max (unit: 1.25ms) 7467 * @param conn_latency 7468 * @param supervision_timeout (unit: 10ms) 7469 * @return 0 if ok 7470 */ 7471 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7472 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7473 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7474 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7475 connection->le_conn_interval_min = conn_interval_min; 7476 connection->le_conn_interval_max = conn_interval_max; 7477 connection->le_conn_latency = conn_latency; 7478 connection->le_supervision_timeout = supervision_timeout; 7479 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7480 hci_run(); 7481 return 0; 7482 } 7483 7484 /** 7485 * @brief Request an update of the connection parameter for a given LE connection 7486 * @param handle 7487 * @param conn_interval_min (unit: 1.25ms) 7488 * @param conn_interval_max (unit: 1.25ms) 7489 * @param conn_latency 7490 * @param supervision_timeout (unit: 10ms) 7491 * @return 0 if ok 7492 */ 7493 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7494 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7495 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7496 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7497 connection->le_conn_interval_min = conn_interval_min; 7498 connection->le_conn_interval_max = conn_interval_max; 7499 connection->le_conn_latency = conn_latency; 7500 connection->le_supervision_timeout = supervision_timeout; 7501 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7502 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7503 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7504 return 0; 7505 } 7506 7507 #ifdef ENABLE_LE_PERIPHERAL 7508 7509 /** 7510 * @brief Set Advertisement Data 7511 * @param advertising_data_length 7512 * @param advertising_data (max 31 octets) 7513 * @note data is not copied, pointer has to stay valid 7514 */ 7515 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7516 hci_stack->le_advertisements_data_len = advertising_data_length; 7517 hci_stack->le_advertisements_data = advertising_data; 7518 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7519 hci_run(); 7520 } 7521 7522 /** 7523 * @brief Set Scan Response Data 7524 * @param advertising_data_length 7525 * @param advertising_data (max 31 octets) 7526 * @note data is not copied, pointer has to stay valid 7527 */ 7528 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7529 hci_stack->le_scan_response_data_len = scan_response_data_length; 7530 hci_stack->le_scan_response_data = scan_response_data; 7531 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7532 hci_run(); 7533 } 7534 7535 /** 7536 * @brief Set Advertisement Parameters 7537 * @param adv_int_min 7538 * @param adv_int_max 7539 * @param adv_type 7540 * @param direct_address_type 7541 * @param direct_address 7542 * @param channel_map 7543 * @param filter_policy 7544 * 7545 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7546 */ 7547 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7548 uint8_t direct_address_typ, bd_addr_t direct_address, 7549 uint8_t channel_map, uint8_t filter_policy) { 7550 7551 hci_stack->le_advertisements_interval_min = adv_int_min; 7552 hci_stack->le_advertisements_interval_max = adv_int_max; 7553 hci_stack->le_advertisements_type = adv_type; 7554 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7555 hci_stack->le_advertisements_channel_map = channel_map; 7556 hci_stack->le_advertisements_filter_policy = filter_policy; 7557 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7558 6); 7559 7560 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7561 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7562 hci_run(); 7563 } 7564 7565 /** 7566 * @brief Enable/Disable Advertisements 7567 * @param enabled 7568 */ 7569 void gap_advertisements_enable(int enabled){ 7570 if (enabled == 0){ 7571 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7572 } else { 7573 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 7574 } 7575 hci_update_advertisements_enabled_for_current_roles(); 7576 hci_run(); 7577 } 7578 7579 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7580 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 7581 btstack_linked_list_iterator_t it; 7582 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7583 while (btstack_linked_list_iterator_has_next(&it)){ 7584 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7585 if ( item->advertising_handle == advertising_handle ) { 7586 return item; 7587 } 7588 } 7589 return NULL; 7590 } 7591 7592 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 7593 // find free advertisement handle 7594 uint8_t advertisement_handle; 7595 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 7596 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 7597 } 7598 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7599 // clear 7600 memset(storage, 0, sizeof(le_advertising_set_t)); 7601 // copy params 7602 storage->advertising_handle = advertisement_handle; 7603 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7604 // add to list 7605 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 7606 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7607 *out_advertising_handle = advertisement_handle; 7608 // set tasks and start 7609 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7610 hci_run(); 7611 return ERROR_CODE_SUCCESS; 7612 } 7613 7614 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 7615 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7616 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7617 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7618 // set tasks and start 7619 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7620 hci_run(); 7621 return ERROR_CODE_SUCCESS; 7622 } 7623 7624 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 7625 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7626 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7627 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 7628 return ERROR_CODE_SUCCESS; 7629 } 7630 7631 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 7632 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7633 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7634 memcpy(advertising_set->random_address, random_address, 6); 7635 // set tasks and start 7636 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7637 hci_run(); 7638 return ERROR_CODE_SUCCESS; 7639 } 7640 7641 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 7642 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7643 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7644 advertising_set->adv_data = advertising_data; 7645 advertising_set->adv_data_len = advertising_data_length; 7646 // set tasks and start 7647 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7648 hci_run(); 7649 return ERROR_CODE_SUCCESS; 7650 } 7651 7652 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){ 7653 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7654 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7655 advertising_set->scan_data = scan_response_data; 7656 advertising_set->scan_data_len = scan_response_data_length; 7657 // set tasks and start 7658 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7659 hci_run(); 7660 return ERROR_CODE_SUCCESS; 7661 } 7662 7663 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 7664 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7665 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7666 advertising_set->enable_timeout = timeout; 7667 advertising_set->enable_max_scan_events = num_extended_advertising_events; 7668 // set tasks and start 7669 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 7670 hci_run(); 7671 return ERROR_CODE_SUCCESS; 7672 } 7673 7674 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 7675 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7676 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7677 // set tasks and start 7678 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7679 hci_run(); 7680 return ERROR_CODE_SUCCESS; 7681 } 7682 7683 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 7684 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7685 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7686 // set tasks and start 7687 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 7688 hci_run(); 7689 return ERROR_CODE_SUCCESS; 7690 } 7691 7692 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7693 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 7694 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7695 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7696 // periodic advertising requires neither connectable, scannable, legacy or anonymous 7697 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7698 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 7699 // set tasks and start 7700 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 7701 hci_run(); 7702 return ERROR_CODE_SUCCESS; 7703 } 7704 7705 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 7706 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7707 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7708 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 7709 return ERROR_CODE_SUCCESS; 7710 } 7711 7712 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 7713 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7714 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7715 advertising_set->periodic_data = periodic_data; 7716 advertising_set->periodic_data_len = periodic_data_length; 7717 // set tasks and start 7718 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 7719 hci_run(); 7720 return ERROR_CODE_SUCCESS; 7721 } 7722 7723 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 7724 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7725 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7726 // set tasks and start 7727 advertising_set->periodic_include_adi = include_adi; 7728 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7729 hci_run(); 7730 return ERROR_CODE_SUCCESS; 7731 } 7732 7733 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 7734 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7735 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7736 // set tasks and start 7737 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7738 hci_run(); 7739 return ERROR_CODE_SUCCESS; 7740 } 7741 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7742 7743 #endif 7744 7745 #endif 7746 7747 void hci_le_set_own_address_type(uint8_t own_address_type){ 7748 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 7749 if (own_address_type == hci_stack->le_own_addr_type) return; 7750 hci_stack->le_own_addr_type = own_address_type; 7751 7752 #ifdef ENABLE_LE_PERIPHERAL 7753 // update advertisement parameters, too 7754 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7755 hci_run(); 7756 #endif 7757 #ifdef ENABLE_LE_CENTRAL 7758 // note: we don't update scan parameters or modify ongoing connection attempts 7759 #endif 7760 } 7761 7762 void hci_le_random_address_set(const bd_addr_t random_address){ 7763 memcpy(hci_stack->le_random_address, random_address, 6); 7764 hci_stack->le_random_address_set = true; 7765 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7766 hci_run(); 7767 } 7768 7769 #endif 7770 7771 uint8_t gap_disconnect(hci_con_handle_t handle){ 7772 hci_connection_t * conn = hci_connection_for_handle(handle); 7773 if (!conn){ 7774 hci_emit_disconnection_complete(handle, 0); 7775 return 0; 7776 } 7777 // ignore if already disconnected 7778 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7779 return 0; 7780 } 7781 conn->state = SEND_DISCONNECT; 7782 hci_run(); 7783 return 0; 7784 } 7785 7786 int gap_read_rssi(hci_con_handle_t con_handle){ 7787 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7788 if (hci_connection == NULL) return 0; 7789 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 7790 hci_run(); 7791 return 1; 7792 } 7793 7794 /** 7795 * @brief Get connection type 7796 * @param con_handle 7797 * @result connection_type 7798 */ 7799 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 7800 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7801 if (!conn) return GAP_CONNECTION_INVALID; 7802 switch (conn->address_type){ 7803 case BD_ADDR_TYPE_LE_PUBLIC: 7804 case BD_ADDR_TYPE_LE_RANDOM: 7805 return GAP_CONNECTION_LE; 7806 case BD_ADDR_TYPE_SCO: 7807 return GAP_CONNECTION_SCO; 7808 case BD_ADDR_TYPE_ACL: 7809 return GAP_CONNECTION_ACL; 7810 default: 7811 return GAP_CONNECTION_INVALID; 7812 } 7813 } 7814 7815 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 7816 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7817 if (!conn) return HCI_ROLE_INVALID; 7818 return (hci_role_t) conn->role; 7819 } 7820 7821 7822 #ifdef ENABLE_CLASSIC 7823 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 7824 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7825 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7826 conn->request_role = role; 7827 hci_run(); 7828 return ERROR_CODE_SUCCESS; 7829 } 7830 #endif 7831 7832 #ifdef ENABLE_BLE 7833 7834 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint8_t phy_options){ 7835 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7836 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7837 7838 conn->le_phy_update_all_phys = all_phys; 7839 conn->le_phy_update_tx_phys = tx_phys; 7840 conn->le_phy_update_rx_phys = rx_phys; 7841 conn->le_phy_update_phy_options = phy_options; 7842 7843 hci_run(); 7844 7845 return 0; 7846 } 7847 7848 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7849 // check if already in list 7850 btstack_linked_list_iterator_t it; 7851 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7852 while (btstack_linked_list_iterator_has_next(&it)) { 7853 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 7854 if (entry->address_type != address_type) { 7855 continue; 7856 } 7857 if (memcmp(entry->address, address, 6) != 0) { 7858 continue; 7859 } 7860 // disallow if already scheduled to add 7861 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 7862 return ERROR_CODE_COMMAND_DISALLOWED; 7863 } 7864 // still on controller, but scheduled to remove -> re-add 7865 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 7866 return ERROR_CODE_SUCCESS; 7867 } 7868 // alloc and add to list 7869 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 7870 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 7871 entry->address_type = address_type; 7872 (void)memcpy(entry->address, address, 6); 7873 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 7874 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 7875 return ERROR_CODE_SUCCESS; 7876 } 7877 7878 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7879 btstack_linked_list_iterator_t it; 7880 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7881 while (btstack_linked_list_iterator_has_next(&it)){ 7882 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7883 if (entry->address_type != address_type) { 7884 continue; 7885 } 7886 if (memcmp(entry->address, address, 6) != 0) { 7887 continue; 7888 } 7889 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7890 // remove from controller if already present 7891 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7892 } else { 7893 // directly remove entry from whitelist 7894 btstack_linked_list_iterator_remove(&it); 7895 btstack_memory_whitelist_entry_free(entry); 7896 } 7897 return ERROR_CODE_SUCCESS; 7898 } 7899 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7900 } 7901 7902 static void hci_whitelist_clear(void){ 7903 btstack_linked_list_iterator_t it; 7904 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7905 while (btstack_linked_list_iterator_has_next(&it)){ 7906 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7907 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7908 // remove from controller if already present 7909 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7910 continue; 7911 } 7912 // directly remove entry from whitelist 7913 btstack_linked_list_iterator_remove(&it); 7914 btstack_memory_whitelist_entry_free(entry); 7915 } 7916 } 7917 7918 // free all entries unconditionally 7919 static void hci_whitelist_free(void){ 7920 btstack_linked_list_iterator_t lit; 7921 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 7922 while (btstack_linked_list_iterator_has_next(&lit)){ 7923 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 7924 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 7925 btstack_memory_whitelist_entry_free(entry); 7926 } 7927 } 7928 7929 /** 7930 * @brief Clear Whitelist 7931 * @return 0 if ok 7932 */ 7933 uint8_t gap_whitelist_clear(void){ 7934 hci_whitelist_clear(); 7935 hci_run(); 7936 return ERROR_CODE_SUCCESS; 7937 } 7938 7939 /** 7940 * @brief Add Device to Whitelist 7941 * @param address_typ 7942 * @param address 7943 * @return 0 if ok 7944 */ 7945 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7946 uint8_t status = hci_whitelist_add(address_type, address); 7947 if (status){ 7948 return status; 7949 } 7950 hci_run(); 7951 return ERROR_CODE_SUCCESS; 7952 } 7953 7954 /** 7955 * @brief Remove Device from Whitelist 7956 * @param address_typ 7957 * @param address 7958 * @return 0 if ok 7959 */ 7960 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7961 uint8_t status = hci_whitelist_remove(address_type, address); 7962 if (status){ 7963 return status; 7964 } 7965 hci_run(); 7966 return ERROR_CODE_SUCCESS; 7967 } 7968 7969 #ifdef ENABLE_LE_CENTRAL 7970 /** 7971 * @brief Connect with Whitelist 7972 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 7973 * @return - if ok 7974 */ 7975 uint8_t gap_connect_with_whitelist(void){ 7976 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7977 return ERROR_CODE_COMMAND_DISALLOWED; 7978 } 7979 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 7980 hci_run(); 7981 return ERROR_CODE_SUCCESS; 7982 } 7983 7984 /** 7985 * @brief Auto Connection Establishment - Start Connecting to device 7986 * @param address_typ 7987 * @param address 7988 * @return 0 if ok 7989 */ 7990 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 7991 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 7992 return ERROR_CODE_COMMAND_DISALLOWED; 7993 } 7994 7995 uint8_t status = hci_whitelist_add(address_type, address); 7996 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 7997 return status; 7998 } 7999 8000 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8001 8002 hci_run(); 8003 return ERROR_CODE_SUCCESS; 8004 } 8005 8006 /** 8007 * @brief Auto Connection Establishment - Stop Connecting to device 8008 * @param address_typ 8009 * @param address 8010 * @return 0 if ok 8011 */ 8012 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8013 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8014 return ERROR_CODE_COMMAND_DISALLOWED; 8015 } 8016 8017 hci_whitelist_remove(address_type, address); 8018 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8019 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8020 } 8021 hci_run(); 8022 return 0; 8023 } 8024 8025 /** 8026 * @brief Auto Connection Establishment - Stop everything 8027 * @note Convenience function to stop all active auto connection attempts 8028 */ 8029 uint8_t gap_auto_connection_stop_all(void){ 8030 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8031 return ERROR_CODE_COMMAND_DISALLOWED; 8032 } 8033 hci_whitelist_clear(); 8034 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8035 hci_run(); 8036 return ERROR_CODE_SUCCESS; 8037 } 8038 8039 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8040 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8041 if (!conn) return 0; 8042 return conn->le_connection_interval; 8043 } 8044 #endif 8045 #endif 8046 8047 #ifdef ENABLE_CLASSIC 8048 /** 8049 * @brief Set Extended Inquiry Response data 8050 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8051 * @note has to be done before stack starts up 8052 */ 8053 void gap_set_extended_inquiry_response(const uint8_t * data){ 8054 hci_stack->eir_data = data; 8055 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8056 hci_run(); 8057 } 8058 8059 /** 8060 * @brief Start GAP Classic Inquiry 8061 * @param duration in 1.28s units 8062 * @return 0 if ok 8063 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8064 */ 8065 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8066 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8067 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8068 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8069 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8070 } 8071 hci_stack->inquiry_state = duration_in_1280ms_units; 8072 hci_stack->inquiry_max_period_length = 0; 8073 hci_stack->inquiry_min_period_length = 0; 8074 hci_run(); 8075 return 0; 8076 } 8077 8078 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8079 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8080 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8081 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8082 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8083 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8084 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8085 8086 hci_stack->inquiry_state = duration; 8087 hci_stack->inquiry_max_period_length = max_period_length; 8088 hci_stack->inquiry_min_period_length = min_period_length; 8089 hci_run(); 8090 return 0; 8091 } 8092 8093 /** 8094 * @brief Stop GAP Classic Inquiry 8095 * @return 0 if ok 8096 */ 8097 int gap_inquiry_stop(void){ 8098 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8099 // emit inquiry complete event, before it even started 8100 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8101 hci_emit_event(event, sizeof(event), 1); 8102 return 0; 8103 } 8104 switch (hci_stack->inquiry_state){ 8105 case GAP_INQUIRY_STATE_ACTIVE: 8106 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8107 hci_run(); 8108 return ERROR_CODE_SUCCESS; 8109 case GAP_INQUIRY_STATE_PERIODIC: 8110 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8111 hci_run(); 8112 return ERROR_CODE_SUCCESS; 8113 default: 8114 return ERROR_CODE_COMMAND_DISALLOWED; 8115 } 8116 } 8117 8118 void gap_inquiry_set_lap(uint32_t lap){ 8119 hci_stack->inquiry_lap = lap; 8120 } 8121 8122 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8123 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8124 hci_stack->inquiry_scan_window = inquiry_scan_window; 8125 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8126 hci_run(); 8127 } 8128 8129 8130 /** 8131 * @brief Remote Name Request 8132 * @param addr 8133 * @param page_scan_repetition_mode 8134 * @param clock_offset only used when bit 15 is set 8135 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8136 */ 8137 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8138 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8139 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8140 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8141 hci_stack->remote_name_clock_offset = clock_offset; 8142 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8143 hci_run(); 8144 return 0; 8145 } 8146 8147 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8148 hci_stack->gap_pairing_state = state; 8149 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8150 hci_run(); 8151 return 0; 8152 } 8153 8154 /** 8155 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8156 * @param addr 8157 * @param pin_data 8158 * @param pin_len 8159 * @return 0 if ok 8160 */ 8161 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8162 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8163 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8164 hci_stack->gap_pairing_pin_len = pin_len; 8165 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8166 } 8167 8168 /** 8169 * @brief Legacy Pairing Pin Code Response 8170 * @param addr 8171 * @param pin 8172 * @return 0 if ok 8173 */ 8174 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8175 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8176 } 8177 8178 /** 8179 * @brief Abort Legacy Pairing 8180 * @param addr 8181 * @param pin 8182 * @return 0 if ok 8183 */ 8184 int gap_pin_code_negative(bd_addr_t addr){ 8185 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8186 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8187 } 8188 8189 /** 8190 * @brief SSP Passkey Response 8191 * @param addr 8192 * @param passkey 8193 * @return 0 if ok 8194 */ 8195 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8196 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8197 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8198 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8199 } 8200 8201 /** 8202 * @brief Abort SSP Passkey Entry/Pairing 8203 * @param addr 8204 * @param pin 8205 * @return 0 if ok 8206 */ 8207 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8208 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8209 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8210 } 8211 8212 /** 8213 * @brief Accept SSP Numeric Comparison 8214 * @param addr 8215 * @param passkey 8216 * @return 0 if ok 8217 */ 8218 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8219 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8220 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8221 } 8222 8223 /** 8224 * @brief Abort SSP Numeric Comparison/Pairing 8225 * @param addr 8226 * @param pin 8227 * @return 0 if ok 8228 */ 8229 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8230 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8231 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8232 } 8233 8234 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8235 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8236 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8237 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8238 connectionSetAuthenticationFlags(conn, flag); 8239 hci_run(); 8240 return ERROR_CODE_SUCCESS; 8241 } 8242 #endif 8243 8244 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8245 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8246 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8247 } 8248 8249 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8250 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8251 } 8252 #endif 8253 8254 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8255 /** 8256 * @brief Report Remote OOB Data 8257 * @param bd_addr 8258 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8259 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8260 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8261 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8262 */ 8263 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){ 8264 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8265 if (connection == NULL) { 8266 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8267 } 8268 connection->classic_oob_c_192 = c_192; 8269 connection->classic_oob_r_192 = r_192; 8270 8271 // ignore P-256 if not supported by us 8272 if (hci_stack->secure_connections_active){ 8273 connection->classic_oob_c_256 = c_256; 8274 connection->classic_oob_r_256 = r_256; 8275 } 8276 8277 return ERROR_CODE_SUCCESS; 8278 } 8279 /** 8280 * @brief Generate new OOB data 8281 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8282 */ 8283 void gap_ssp_generate_oob_data(void){ 8284 hci_stack->classic_read_local_oob_data = true; 8285 hci_run(); 8286 } 8287 8288 #endif 8289 8290 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8291 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8292 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8293 if (connection == NULL) { 8294 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8295 } 8296 8297 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8298 connection->link_key_type = type; 8299 8300 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8301 } 8302 8303 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8304 /** 8305 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8306 * @param inquiry_mode see bluetooth_defines.h 8307 */ 8308 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8309 hci_stack->inquiry_mode = inquiry_mode; 8310 } 8311 8312 /** 8313 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8314 */ 8315 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8316 hci_stack->sco_voice_setting = voice_setting; 8317 } 8318 8319 /** 8320 * @brief Get SCO Voice Setting 8321 * @return current voice setting 8322 */ 8323 uint16_t hci_get_sco_voice_setting(void){ 8324 return hci_stack->sco_voice_setting; 8325 } 8326 8327 static int hci_have_usb_transport(void){ 8328 if (!hci_stack->hci_transport) return 0; 8329 const char * transport_name = hci_stack->hci_transport->name; 8330 if (!transport_name) return 0; 8331 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8332 } 8333 8334 /** @brief Get SCO packet length for current SCO Voice setting 8335 * @note Using SCO packets of the exact length is required for USB transfer 8336 * @return Length of SCO packets in bytes (not audio frames) 8337 */ 8338 uint16_t hci_get_sco_packet_length(void){ 8339 uint16_t sco_packet_length = 0; 8340 8341 #ifdef ENABLE_SCO_OVER_HCI 8342 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8343 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8344 8345 if (hci_have_usb_transport()){ 8346 // see Core Spec for H2 USB Transfer. 8347 // 3 byte SCO header + 24 bytes per connection 8348 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8349 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8350 } else { 8351 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8352 sco_packet_length = 3 + 60 * multiplier; 8353 // assert that it still fits inside an SCO buffer 8354 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8355 sco_packet_length = 3 + 60; 8356 } 8357 } 8358 #endif 8359 8360 #ifdef HAVE_SCO_TRANSPORT 8361 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8362 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8363 sco_packet_length = 3 + 60 * multiplier; 8364 #endif 8365 return sco_packet_length; 8366 } 8367 8368 /** 8369 * @brief Sets the master/slave policy 8370 * @param policy (0: attempt to become master, 1: let connecting device decide) 8371 */ 8372 void hci_set_master_slave_policy(uint8_t policy){ 8373 hci_stack->master_slave_policy = policy; 8374 } 8375 8376 #endif 8377 8378 HCI_STATE hci_get_state(void){ 8379 return hci_stack->state; 8380 } 8381 8382 #ifdef ENABLE_CLASSIC 8383 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8384 hci_stack->gap_classic_accept_callback = accept_callback; 8385 } 8386 #endif 8387 8388 /** 8389 * @brief Set callback for Bluetooth Hardware Error 8390 */ 8391 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8392 hci_stack->hardware_error_callback = fn; 8393 } 8394 8395 void hci_disconnect_all(void){ 8396 btstack_linked_list_iterator_t it; 8397 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8398 while (btstack_linked_list_iterator_has_next(&it)){ 8399 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8400 if (con->state == SENT_DISCONNECT) continue; 8401 con->state = SEND_DISCONNECT; 8402 } 8403 hci_run(); 8404 } 8405 8406 uint16_t hci_get_manufacturer(void){ 8407 return hci_stack->manufacturer; 8408 } 8409 8410 #ifdef ENABLE_BLE 8411 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8412 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8413 if (!hci_con) return NULL; 8414 return &hci_con->sm_connection; 8415 } 8416 8417 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8418 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8419 #endif 8420 8421 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8422 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8423 if (hci_connection == NULL) return 0; 8424 if (hci_is_le_connection(hci_connection)){ 8425 #ifdef ENABLE_BLE 8426 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8427 if (sm_conn->sm_connection_encrypted) { 8428 return sm_conn->sm_actual_encryption_key_size; 8429 } 8430 #endif 8431 } else { 8432 #ifdef ENABLE_CLASSIC 8433 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8434 return hci_connection->encryption_key_size; 8435 } 8436 #endif 8437 } 8438 return 0; 8439 } 8440 8441 bool gap_authenticated(hci_con_handle_t con_handle){ 8442 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8443 if (hci_connection == NULL) return false; 8444 8445 switch (hci_connection->address_type){ 8446 #ifdef ENABLE_BLE 8447 case BD_ADDR_TYPE_LE_PUBLIC: 8448 case BD_ADDR_TYPE_LE_RANDOM: 8449 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8450 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8451 #endif 8452 #ifdef ENABLE_CLASSIC 8453 case BD_ADDR_TYPE_SCO: 8454 case BD_ADDR_TYPE_ACL: 8455 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8456 #endif 8457 default: 8458 return false; 8459 } 8460 } 8461 8462 bool gap_secure_connection(hci_con_handle_t con_handle){ 8463 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8464 if (hci_connection == NULL) return 0; 8465 8466 switch (hci_connection->address_type){ 8467 #ifdef ENABLE_BLE 8468 case BD_ADDR_TYPE_LE_PUBLIC: 8469 case BD_ADDR_TYPE_LE_RANDOM: 8470 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8471 return hci_connection->sm_connection.sm_connection_sc != 0; 8472 #endif 8473 #ifdef ENABLE_CLASSIC 8474 case BD_ADDR_TYPE_SCO: 8475 case BD_ADDR_TYPE_ACL: 8476 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8477 #endif 8478 default: 8479 return false; 8480 } 8481 } 8482 8483 bool gap_bonded(hci_con_handle_t con_handle){ 8484 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8485 if (hci_connection == NULL) return 0; 8486 8487 #ifdef ENABLE_CLASSIC 8488 link_key_t link_key; 8489 link_key_type_t link_key_type; 8490 #endif 8491 switch (hci_connection->address_type){ 8492 #ifdef ENABLE_BLE 8493 case BD_ADDR_TYPE_LE_PUBLIC: 8494 case BD_ADDR_TYPE_LE_RANDOM: 8495 return hci_connection->sm_connection.sm_le_db_index >= 0; 8496 #endif 8497 #ifdef ENABLE_CLASSIC 8498 case BD_ADDR_TYPE_SCO: 8499 case BD_ADDR_TYPE_ACL: 8500 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8501 #endif 8502 default: 8503 return false; 8504 } 8505 } 8506 8507 #ifdef ENABLE_BLE 8508 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8509 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8510 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8511 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8512 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8513 return sm_conn->sm_connection_authorization_state; 8514 } 8515 #endif 8516 8517 #ifdef ENABLE_CLASSIC 8518 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){ 8519 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8520 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8521 conn->sniff_min_interval = sniff_min_interval; 8522 conn->sniff_max_interval = sniff_max_interval; 8523 conn->sniff_attempt = sniff_attempt; 8524 conn->sniff_timeout = sniff_timeout; 8525 hci_run(); 8526 return 0; 8527 } 8528 8529 /** 8530 * @brief Exit Sniff mode 8531 * @param con_handle 8532 @ @return 0 if ok 8533 */ 8534 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8535 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8536 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8537 conn->sniff_min_interval = 0xffff; 8538 hci_run(); 8539 return 0; 8540 } 8541 8542 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){ 8543 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8544 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8545 conn->sniff_subrating_max_latency = max_latency; 8546 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 8547 conn->sniff_subrating_min_local_timeout = min_local_timeout; 8548 hci_run(); 8549 return ERROR_CODE_SUCCESS; 8550 } 8551 8552 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){ 8553 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8554 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8555 conn->qos_service_type = service_type; 8556 conn->qos_token_rate = token_rate; 8557 conn->qos_peak_bandwidth = peak_bandwidth; 8558 conn->qos_latency = latency; 8559 conn->qos_delay_variation = delay_variation; 8560 hci_run(); 8561 return ERROR_CODE_SUCCESS; 8562 } 8563 8564 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 8565 hci_stack->new_page_scan_interval = page_scan_interval; 8566 hci_stack->new_page_scan_window = page_scan_window; 8567 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 8568 hci_run(); 8569 } 8570 8571 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 8572 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 8573 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 8574 hci_run(); 8575 } 8576 8577 void gap_set_page_timeout(uint16_t page_timeout){ 8578 hci_stack->page_timeout = page_timeout; 8579 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 8580 hci_run(); 8581 } 8582 8583 #endif 8584 8585 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 8586 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 8587 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8588 if (le_device_db_index >= le_device_db_max_count()) return; 8589 uint8_t offset = le_device_db_index >> 3; 8590 uint8_t mask = 1 << (le_device_db_index & 7); 8591 hci_stack->le_resolving_list_add_entries[offset] |= mask; 8592 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8593 // note: go back to remove entries, otherwise, a remove + add will skip the add 8594 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8595 } 8596 } 8597 8598 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 8599 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8600 if (le_device_db_index >= le_device_db_max_count()) return; 8601 uint8_t offset = le_device_db_index >> 3; 8602 uint8_t mask = 1 << (le_device_db_index & 7); 8603 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 8604 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8605 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8606 } 8607 } 8608 8609 uint8_t gap_load_resolving_list_from_le_device_db(void){ 8610 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 8611 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 8612 } 8613 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 8614 // restart le resolving list update 8615 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 8616 } 8617 return ERROR_CODE_SUCCESS; 8618 } 8619 #endif 8620 8621 #ifdef ENABLE_BLE 8622 #ifdef ENABLE_LE_CENTRAL 8623 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8624 8625 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8626 // check if already in list 8627 btstack_linked_list_iterator_t it; 8628 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8629 while (btstack_linked_list_iterator_has_next(&it)) { 8630 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 8631 if (entry->sid != advertising_sid) { 8632 continue; 8633 } 8634 if (entry->address_type != address_type) { 8635 continue; 8636 } 8637 if (memcmp(entry->address, address, 6) != 0) { 8638 continue; 8639 } 8640 // disallow if already scheduled to add 8641 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 8642 return ERROR_CODE_COMMAND_DISALLOWED; 8643 } 8644 // still on controller, but scheduled to remove -> re-add 8645 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8646 return ERROR_CODE_SUCCESS; 8647 } 8648 // alloc and add to list 8649 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 8650 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8651 entry->sid = advertising_sid; 8652 entry->address_type = address_type; 8653 (void)memcpy(entry->address, address, 6); 8654 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8655 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 8656 return ERROR_CODE_SUCCESS; 8657 } 8658 8659 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8660 btstack_linked_list_iterator_t it; 8661 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8662 while (btstack_linked_list_iterator_has_next(&it)){ 8663 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8664 if (entry->sid != advertising_sid) { 8665 continue; 8666 } 8667 if (entry->address_type != address_type) { 8668 continue; 8669 } 8670 if (memcmp(entry->address, address, 6) != 0) { 8671 continue; 8672 } 8673 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8674 // remove from controller if already present 8675 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8676 } else { 8677 // directly remove entry from whitelist 8678 btstack_linked_list_iterator_remove(&it); 8679 btstack_memory_periodic_advertiser_list_entry_free(entry); 8680 } 8681 return ERROR_CODE_SUCCESS; 8682 } 8683 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8684 } 8685 8686 static void hci_periodic_advertiser_list_clear(void){ 8687 btstack_linked_list_iterator_t it; 8688 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8689 while (btstack_linked_list_iterator_has_next(&it)){ 8690 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8691 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8692 // remove from controller if already present 8693 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8694 continue; 8695 } 8696 // directly remove entry from whitelist 8697 btstack_linked_list_iterator_remove(&it); 8698 btstack_memory_periodic_advertiser_list_entry_free(entry); 8699 } 8700 } 8701 8702 // free all entries unconditionally 8703 static void hci_periodic_advertiser_list_free(void){ 8704 btstack_linked_list_iterator_t lit; 8705 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 8706 while (btstack_linked_list_iterator_has_next(&lit)){ 8707 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 8708 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 8709 btstack_memory_periodic_advertiser_list_entry_free(entry); 8710 } 8711 } 8712 8713 uint8_t gap_periodic_advertiser_list_clear(void){ 8714 hci_periodic_advertiser_list_clear(); 8715 hci_run(); 8716 return ERROR_CODE_SUCCESS; 8717 } 8718 8719 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8720 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 8721 if (status){ 8722 return status; 8723 } 8724 hci_run(); 8725 return ERROR_CODE_SUCCESS; 8726 } 8727 8728 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8729 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 8730 if (status){ 8731 return status; 8732 } 8733 hci_run(); 8734 return ERROR_CODE_SUCCESS; 8735 } 8736 8737 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 8738 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 8739 // abort if already active 8740 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 8741 return ERROR_CODE_COMMAND_DISALLOWED; 8742 } 8743 // store request 8744 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 8745 hci_stack->le_periodic_sync_options = options; 8746 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 8747 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 8748 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 8749 hci_stack->le_periodic_sync_skip = skip; 8750 hci_stack->le_periodic_sync_timeout = sync_timeout; 8751 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 8752 8753 hci_run(); 8754 return ERROR_CODE_SUCCESS; 8755 } 8756 8757 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 8758 // abort if not requested 8759 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 8760 return ERROR_CODE_COMMAND_DISALLOWED; 8761 } 8762 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 8763 hci_run(); 8764 return ERROR_CODE_SUCCESS; 8765 } 8766 8767 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 8768 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 8769 return ERROR_CODE_COMMAND_DISALLOWED; 8770 } 8771 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 8772 hci_run(); 8773 return ERROR_CODE_SUCCESS; 8774 } 8775 8776 #endif 8777 #endif 8778 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 8779 static uint8_t hci_iso_stream_create(hci_con_handle_t con_handle, uint8_t big_handle) { 8780 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 8781 if (iso_stream == NULL){ 8782 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8783 } else { 8784 iso_stream->state = HCI_ISO_STREAM_STATE_REQUESTED; 8785 iso_stream->con_handle = con_handle; 8786 iso_stream->big_handle = big_handle; 8787 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8788 return ERROR_CODE_SUCCESS; 8789 } 8790 } 8791 8792 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 8793 btstack_linked_list_iterator_t it; 8794 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8795 while (btstack_linked_list_iterator_has_next(&it)){ 8796 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8797 if (iso_stream->con_handle == con_handle ) { 8798 return iso_stream; 8799 } 8800 } 8801 return NULL; 8802 } 8803 8804 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 8805 log_info("hci_iso_stream_finalize con_handle 0x%04x, big_handle 0x%02x", iso_stream->con_handle, iso_stream->big_handle); 8806 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8807 btstack_memory_hci_iso_stream_free(iso_stream); 8808 } 8809 8810 static void hci_iso_stream_requested_finalize(uint8_t big_handle) { 8811 btstack_linked_list_iterator_t it; 8812 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8813 while (btstack_linked_list_iterator_has_next(&it)){ 8814 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8815 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 8816 (iso_stream->big_handle == big_handle)){ 8817 btstack_linked_list_iterator_remove(&it); 8818 btstack_memory_hci_iso_stream_free(iso_stream); 8819 } 8820 } 8821 } 8822 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 8823 btstack_linked_list_iterator_t it; 8824 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8825 while (btstack_linked_list_iterator_has_next(&it)){ 8826 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8827 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 8828 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 8829 } 8830 } 8831 } 8832 8833 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 8834 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 8835 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 8836 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 8837 return (sdu_len_offset + 2 + sdu_len) == size; 8838 } 8839 8840 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 8841 if (hci_stack->iso_packet_handler == NULL) { 8842 return; 8843 } 8844 if (size < 4) { 8845 return; 8846 } 8847 8848 // parse header 8849 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 8850 uint16_t iso_data_len = little_endian_read_16(packet, 2); 8851 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 8852 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 8853 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 8854 8855 // assert packet is complete 8856 if ((iso_data_len + 4u) != size){ 8857 return; 8858 } 8859 8860 if ((pb_flag & 0x01) == 0){ 8861 if (pb_flag == 0x02){ 8862 // The ISO_Data_Load field contains a header and a complete SDU. 8863 if (hci_iso_sdu_complete(packet, size)) { 8864 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 8865 } 8866 } else { 8867 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 8868 if (iso_stream == NULL){ 8869 return; 8870 } 8871 if (size > HCI_ISO_PAYLOAD_SIZE){ 8872 return; 8873 } 8874 memcpy(iso_stream->reassembly_buffer, packet, size); 8875 // fix pb_flag 8876 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 8877 iso_stream->reassembly_pos = size; 8878 } 8879 } else { 8880 // iso_data_load contains continuation or last fragment of an SDU 8881 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 8882 if (ts_flag != 0){ 8883 return; 8884 } 8885 // append fragment 8886 if (iso_stream == NULL){ 8887 return; 8888 } 8889 if (iso_stream->reassembly_pos == 0){ 8890 return; 8891 } 8892 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 8893 // reset reassembly buffer 8894 iso_stream->reassembly_pos = 0; 8895 return; 8896 } 8897 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 8898 iso_stream->reassembly_pos += iso_data_len; 8899 8900 // deliver if last fragment and SDU complete 8901 if (pb_flag == 0x03){ 8902 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 8903 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 8904 } 8905 iso_stream->reassembly_pos = 0; 8906 } 8907 } 8908 } 8909 8910 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 8911 uint8_t event [6 + (MAX_NR_BIS * 2)]; 8912 uint16_t pos = 0; 8913 event[pos++] = HCI_EVENT_META_GAP; 8914 event[pos++] = 4 + (2 * big->num_bis); 8915 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 8916 event[pos++] = status; 8917 event[pos++] = big->big_handle; 8918 event[pos++] = big->num_bis; 8919 uint8_t i; 8920 for (i=0;i<big->num_bis;i++){ 8921 little_endian_store_16(event, pos, big->bis_con_handles[i]); 8922 pos += 2; 8923 } 8924 hci_emit_event(event, pos, 0); 8925 } 8926 8927 static void hci_emit_big_terminated(const le_audio_big_t * big){ 8928 uint8_t event [4]; 8929 uint16_t pos = 0; 8930 event[pos++] = HCI_EVENT_META_GAP; 8931 event[pos++] = 2; 8932 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 8933 event[pos++] = big->big_handle; 8934 hci_emit_event(event, pos, 0); 8935 } 8936 8937 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 8938 uint8_t event [6 + (MAX_NR_BIS * 2)]; 8939 uint16_t pos = 0; 8940 event[pos++] = HCI_EVENT_META_GAP; 8941 event[pos++] = 4; 8942 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 8943 event[pos++] = status; 8944 event[pos++] = big_sync->big_handle; 8945 event[pos++] = big_sync->num_bis; 8946 uint8_t i; 8947 for (i=0;i<big_sync->num_bis;i++){ 8948 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 8949 pos += 2; 8950 } 8951 hci_emit_event(event, pos, 0); 8952 } 8953 8954 static void hci_emit_big_sync_stopped(const le_audio_big_sync_t * big_sync){ 8955 uint8_t event [4]; 8956 uint16_t pos = 0; 8957 event[pos++] = HCI_EVENT_META_GAP; 8958 event[pos++] = 2; 8959 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 8960 event[pos++] = big_sync->big_handle; 8961 hci_emit_event(event, pos, 0); 8962 } 8963 8964 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 8965 btstack_linked_list_iterator_t it; 8966 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 8967 while (btstack_linked_list_iterator_has_next(&it)){ 8968 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 8969 if ( big->big_handle == big_handle ) { 8970 return big; 8971 } 8972 } 8973 return NULL; 8974 } 8975 8976 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 8977 btstack_linked_list_iterator_t it; 8978 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 8979 while (btstack_linked_list_iterator_has_next(&it)){ 8980 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 8981 if ( big_sync->big_handle == big_handle ) { 8982 return big_sync; 8983 } 8984 } 8985 return NULL; 8986 } 8987 8988 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 8989 if (hci_big_for_handle(big_params->big_handle) != NULL){ 8990 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8991 } 8992 if (big_params->num_bis == 0){ 8993 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8994 } 8995 if (big_params->num_bis > MAX_NR_BIS){ 8996 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8997 } 8998 8999 // reserve ISO Streams 9000 uint8_t i; 9001 uint8_t status = ERROR_CODE_SUCCESS; 9002 for (i=0;i<big_params->num_bis;i++){ 9003 status = hci_iso_stream_create(HCI_CON_HANDLE_INVALID, big_params->big_handle); 9004 if (status != ERROR_CODE_SUCCESS) { 9005 break; 9006 } 9007 } 9008 9009 // free structs on error 9010 if (status != ERROR_CODE_SUCCESS){ 9011 hci_iso_stream_requested_finalize(big_params->big_handle); 9012 return status; 9013 } 9014 9015 le_audio_big_t * big = storage; 9016 big->big_handle = big_params->big_handle; 9017 big->params = big_params; 9018 big->state = LE_AUDIO_BIG_STATE_CREATE; 9019 big->num_bis = big_params->num_bis; 9020 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9021 9022 hci_run(); 9023 9024 return ERROR_CODE_SUCCESS; 9025 } 9026 9027 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9028 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9029 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9030 } 9031 if (big_sync_params->num_bis == 0){ 9032 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9033 } 9034 if (big_sync_params->num_bis > MAX_NR_BIS){ 9035 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9036 } 9037 9038 le_audio_big_sync_t * big_sync = storage; 9039 big_sync->big_handle = big_sync_params->big_handle; 9040 big_sync->params = big_sync_params; 9041 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9042 big_sync->num_bis = big_sync_params->num_bis; 9043 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9044 9045 hci_run(); 9046 9047 return ERROR_CODE_SUCCESS; 9048 } 9049 9050 uint8_t gap_big_terminate(uint8_t big_handle){ 9051 le_audio_big_t * big = hci_big_for_handle(big_handle); 9052 if (big == NULL){ 9053 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9054 } 9055 switch (big->state){ 9056 case LE_AUDIO_BIG_STATE_CREATE: 9057 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9058 hci_emit_big_terminated(big); 9059 break; 9060 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9061 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9062 break; 9063 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9064 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9065 case LE_AUDIO_BIG_STATE_ACTIVE: 9066 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9067 hci_run(); 9068 break; 9069 default: 9070 return ERROR_CODE_COMMAND_DISALLOWED; 9071 } 9072 return ERROR_CODE_SUCCESS; 9073 } 9074 9075 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9076 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9077 if (big_sync == NULL){ 9078 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9079 } 9080 switch (big_sync->state){ 9081 case LE_AUDIO_BIG_STATE_CREATE: 9082 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9083 hci_emit_big_sync_stopped(big_sync); 9084 break; 9085 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9086 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9087 break; 9088 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9089 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9090 case LE_AUDIO_BIG_STATE_ACTIVE: 9091 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9092 hci_run(); 9093 break; 9094 default: 9095 return ERROR_CODE_COMMAND_DISALLOWED; 9096 } 9097 return ERROR_CODE_SUCCESS; 9098 } 9099 9100 #endif 9101 #endif /* ENABLE_BLE */ 9102 9103 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9104 void hci_setup_test_connections_fuzz(void){ 9105 hci_connection_t * conn; 9106 9107 // default address: 66:55:44:33:00:01 9108 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9109 9110 // setup Controller info 9111 hci_stack->num_cmd_packets = 255; 9112 hci_stack->acl_packets_total_num = 255; 9113 9114 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9115 addr[5] = 0x01; 9116 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9117 conn->con_handle = addr[5]; 9118 conn->role = HCI_ROLE_SLAVE; 9119 conn->state = RECEIVED_CONNECTION_REQUEST; 9120 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9121 9122 // setup incoming Classic SCO connection with con handle 0x0002 9123 addr[5] = 0x02; 9124 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9125 conn->con_handle = addr[5]; 9126 conn->role = HCI_ROLE_SLAVE; 9127 conn->state = RECEIVED_CONNECTION_REQUEST; 9128 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9129 9130 // setup ready Classic ACL connection with con handle 0x0003 9131 addr[5] = 0x03; 9132 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9133 conn->con_handle = addr[5]; 9134 conn->role = HCI_ROLE_SLAVE; 9135 conn->state = OPEN; 9136 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9137 9138 // setup ready Classic SCO connection with con handle 0x0004 9139 addr[5] = 0x04; 9140 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9141 conn->con_handle = addr[5]; 9142 conn->role = HCI_ROLE_SLAVE; 9143 conn->state = OPEN; 9144 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9145 9146 // setup ready LE ACL connection with con handle 0x005 and public address 9147 addr[5] = 0x05; 9148 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9149 conn->con_handle = addr[5]; 9150 conn->role = HCI_ROLE_SLAVE; 9151 conn->state = OPEN; 9152 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9153 conn->sm_connection.sm_connection_encrypted = 1; 9154 } 9155 9156 void hci_free_connections_fuzz(void){ 9157 btstack_linked_list_iterator_t it; 9158 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9159 while (btstack_linked_list_iterator_has_next(&it)){ 9160 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9161 btstack_linked_list_iterator_remove(&it); 9162 btstack_memory_hci_connection_free(con); 9163 } 9164 } 9165 void hci_simulate_working_fuzz(void){ 9166 hci_stack->le_scanning_param_update = false; 9167 hci_init_done(); 9168 hci_stack->num_cmd_packets = 255; 9169 } 9170 #endif 9171