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_iso_notify_can_send_now(void); 235 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 236 static void hci_emit_big_terminated(const le_audio_big_t * big); 237 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 238 static void hci_emit_big_sync_stopped(const le_audio_big_sync_t * big_sync); 239 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 240 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 241 #endif /* ENABLE_BLE */ 242 243 // the STACK is here 244 #ifndef HAVE_MALLOC 245 static hci_stack_t hci_stack_static; 246 #endif 247 static hci_stack_t * hci_stack = NULL; 248 249 #ifdef ENABLE_CLASSIC 250 // default name 251 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 252 253 // test helper 254 static uint8_t disable_l2cap_timeouts = 0; 255 #endif 256 257 // reset connection state on create and on reconnect 258 // don't overwrite addr, con handle, role 259 static void hci_connection_init(hci_connection_t * conn){ 260 conn->authentication_flags = AUTH_FLAG_NONE; 261 conn->bonding_flags = 0; 262 conn->requested_security_level = LEVEL_0; 263 #ifdef ENABLE_CLASSIC 264 conn->request_role = HCI_ROLE_INVALID; 265 conn->sniff_subrating_max_latency = 0xffff; 266 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 267 conn->link_key_type = INVALID_LINK_KEY; 268 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 269 btstack_run_loop_set_timer_context(&conn->timeout, conn); 270 hci_connection_timestamp(conn); 271 #endif 272 conn->acl_recombination_length = 0; 273 conn->acl_recombination_pos = 0; 274 conn->num_packets_sent = 0; 275 276 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 277 #ifdef ENABLE_BLE 278 conn->le_phy_update_all_phys = 0xff; 279 #endif 280 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 281 conn->le_max_tx_octets = 27; 282 #endif 283 #ifdef ENABLE_CLASSIC_PAIRING_OOB 284 conn->classic_oob_c_192 = NULL; 285 conn->classic_oob_r_192 = NULL; 286 conn->classic_oob_c_256 = NULL; 287 conn->classic_oob_r_256 = NULL; 288 #endif 289 } 290 291 /** 292 * create connection for given address 293 * 294 * @return connection OR NULL, if no memory left 295 */ 296 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 297 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 298 299 hci_connection_t * conn = btstack_memory_hci_connection_get(); 300 if (!conn) return NULL; 301 hci_connection_init(conn); 302 303 bd_addr_copy(conn->address, addr); 304 conn->address_type = addr_type; 305 conn->con_handle = HCI_CON_HANDLE_INVALID; 306 conn->role = HCI_ROLE_INVALID; 307 308 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 309 310 return conn; 311 } 312 313 314 /** 315 * get le connection parameter range 316 * 317 * @return le connection parameter range struct 318 */ 319 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 320 *range = hci_stack->le_connection_parameter_range; 321 } 322 323 /** 324 * set le connection parameter range 325 * 326 */ 327 328 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 329 hci_stack->le_connection_parameter_range = *range; 330 } 331 332 /** 333 * @brief Test if connection parameters are inside in existing rage 334 * @param conn_interval_min (unit: 1.25ms) 335 * @param conn_interval_max (unit: 1.25ms) 336 * @param conn_latency 337 * @param supervision_timeout (unit: 10ms) 338 * @return 1 if included 339 */ 340 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){ 341 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 342 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 343 344 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 345 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 346 347 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 348 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 349 350 return 1; 351 } 352 353 /** 354 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 355 * @note: default: 1 356 * @param max_peripheral_connections 357 */ 358 #ifdef ENABLE_LE_PERIPHERAL 359 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 360 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 361 } 362 #endif 363 364 /** 365 * get hci connections iterator 366 * 367 * @return hci connections iterator 368 */ 369 370 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 371 btstack_linked_list_iterator_init(it, &hci_stack->connections); 372 } 373 374 /** 375 * get connection for a given handle 376 * 377 * @return connection OR NULL, if not found 378 */ 379 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 380 btstack_linked_list_iterator_t it; 381 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 382 while (btstack_linked_list_iterator_has_next(&it)){ 383 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 384 if ( item->con_handle == con_handle ) { 385 return item; 386 } 387 } 388 return NULL; 389 } 390 391 /** 392 * get connection for given address 393 * 394 * @return connection OR NULL, if not found 395 */ 396 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 397 btstack_linked_list_iterator_t it; 398 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 399 while (btstack_linked_list_iterator_has_next(&it)){ 400 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 401 if (connection->address_type != addr_type) continue; 402 if (memcmp(addr, connection->address, 6) != 0) continue; 403 return connection; 404 } 405 return NULL; 406 } 407 408 #ifdef ENABLE_CLASSIC 409 410 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 411 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 412 } 413 414 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 415 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 416 } 417 418 #ifdef ENABLE_SCO_OVER_HCI 419 static int hci_number_sco_connections(void){ 420 int connections = 0; 421 btstack_linked_list_iterator_t it; 422 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 423 while (btstack_linked_list_iterator_has_next(&it)){ 424 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 425 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 426 connections++; 427 } 428 return connections; 429 } 430 #endif 431 432 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 433 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 434 #ifdef HAVE_EMBEDDED_TICK 435 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 436 // connections might be timed out 437 hci_emit_l2cap_check_timeout(connection); 438 } 439 #else 440 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 441 // connections might be timed out 442 hci_emit_l2cap_check_timeout(connection); 443 } 444 #endif 445 } 446 447 static void hci_connection_timestamp(hci_connection_t *connection){ 448 #ifdef HAVE_EMBEDDED_TICK 449 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 450 #else 451 connection->timestamp = btstack_run_loop_get_time_ms(); 452 #endif 453 } 454 455 /** 456 * add authentication flags and reset timer 457 * @note: assumes classic connection 458 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 459 */ 460 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 461 bd_addr_t addr; 462 reverse_bd_addr(bd_addr, addr); 463 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 464 if (conn) { 465 connectionSetAuthenticationFlags(conn, flags); 466 hci_connection_timestamp(conn); 467 } 468 } 469 470 static bool hci_pairing_active(hci_connection_t * hci_connection){ 471 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 472 } 473 474 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 475 if (hci_pairing_active(hci_connection)) return; 476 if (ssp){ 477 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 478 } else { 479 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 480 } 481 // if we are initiator, we have sent an HCI Authenticate Request 482 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 483 484 // if we are responder, use minimal service security level as required level 485 if (!initiator){ 486 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); 487 } 488 489 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 490 491 uint8_t event[12]; 492 event[0] = GAP_EVENT_PAIRING_STARTED; 493 event[1] = 10; 494 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 495 reverse_bd_addr(hci_connection->address, &event[4]); 496 event[10] = (uint8_t) ssp; 497 event[11] = (uint8_t) initiator; 498 hci_emit_event(event, sizeof(event), 1); 499 } 500 501 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 502 hci_connection->requested_security_level = LEVEL_0; 503 if (!hci_pairing_active(hci_connection)) return; 504 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 505 #ifdef ENABLE_CLASSIC_PAIRING_OOB 506 hci_connection->classic_oob_c_192 = NULL; 507 hci_connection->classic_oob_r_192 = NULL; 508 hci_connection->classic_oob_c_256 = NULL; 509 hci_connection->classic_oob_r_256 = NULL; 510 #endif 511 log_info("pairing complete, status %02x", status); 512 513 uint8_t event[11]; 514 event[0] = GAP_EVENT_PAIRING_COMPLETE; 515 event[1] = 9; 516 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 517 reverse_bd_addr(hci_connection->address, &event[4]); 518 event[10] = status; 519 hci_emit_event(event, sizeof(event), 1); 520 521 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 522 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 523 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 524 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 525 hci_connection->bonding_status = status; 526 } 527 } 528 529 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 530 hci_connection_t * conn = hci_connection_for_handle(handle); 531 if (!conn) return false; 532 return hci_pairing_active(conn); 533 } 534 535 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 536 if (!hci_stack->link_key_db) return; 537 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 538 hci_stack->link_key_db->delete_link_key(addr); 539 } 540 541 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 542 if (!hci_stack->link_key_db) return; 543 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 544 hci_stack->link_key_db->put_link_key(addr, link_key, type); 545 } 546 547 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 548 if (!hci_stack->link_key_db) return false; 549 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 550 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 551 return result; 552 } 553 554 void gap_delete_all_link_keys(void){ 555 bd_addr_t addr; 556 link_key_t link_key; 557 link_key_type_t type; 558 btstack_link_key_iterator_t it; 559 int ok = gap_link_key_iterator_init(&it); 560 if (!ok) { 561 log_error("could not initialize iterator"); 562 return; 563 } 564 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 565 gap_drop_link_key_for_bd_addr(addr); 566 } 567 gap_link_key_iterator_done(&it); 568 } 569 570 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 571 if (!hci_stack->link_key_db) return 0; 572 if (!hci_stack->link_key_db->iterator_init) return 0; 573 return hci_stack->link_key_db->iterator_init(it); 574 } 575 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){ 576 if (!hci_stack->link_key_db) return 0; 577 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 578 } 579 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 580 if (!hci_stack->link_key_db) return; 581 hci_stack->link_key_db->iterator_done(it); 582 } 583 #endif 584 585 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 586 switch (address_type){ 587 case BD_ADDR_TYPE_LE_PUBLIC: 588 case BD_ADDR_TYPE_LE_RANDOM: 589 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 590 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 591 return true; 592 default: 593 return false; 594 } 595 } 596 597 static int hci_is_le_connection(hci_connection_t * connection){ 598 return hci_is_le_connection_type(connection->address_type); 599 } 600 601 /** 602 * count connections 603 */ 604 static int nr_hci_connections(void){ 605 int count = 0; 606 btstack_linked_item_t *it; 607 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 608 count++; 609 } 610 return count; 611 } 612 613 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 614 615 unsigned int num_packets_sent_classic = 0; 616 unsigned int num_packets_sent_le = 0; 617 618 btstack_linked_item_t *it; 619 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 620 hci_connection_t * connection = (hci_connection_t *) it; 621 if (hci_is_le_connection(connection)){ 622 num_packets_sent_le += connection->num_packets_sent; 623 } 624 if (connection->address_type == BD_ADDR_TYPE_ACL){ 625 num_packets_sent_classic += connection->num_packets_sent; 626 } 627 } 628 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 629 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 630 int free_slots_le = 0; 631 632 if (free_slots_classic < 0){ 633 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); 634 return 0; 635 } 636 637 if (hci_stack->le_acl_packets_total_num){ 638 // if we have LE slots, they are used 639 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 640 if (free_slots_le < 0){ 641 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); 642 return 0; 643 } 644 } else { 645 // otherwise, classic slots are used for LE, too 646 free_slots_classic -= num_packets_sent_le; 647 if (free_slots_classic < 0){ 648 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); 649 return 0; 650 } 651 } 652 653 switch (address_type){ 654 case BD_ADDR_TYPE_UNKNOWN: 655 log_error("hci_number_free_acl_slots: unknown address type"); 656 return 0; 657 658 case BD_ADDR_TYPE_ACL: 659 return (uint16_t) free_slots_classic; 660 661 default: 662 if (hci_stack->le_acl_packets_total_num > 0){ 663 return (uint16_t) free_slots_le; 664 } 665 return (uint16_t) free_slots_classic; 666 } 667 } 668 669 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 670 // get connection type 671 hci_connection_t * connection = hci_connection_for_handle(con_handle); 672 if (!connection){ 673 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 674 return 0; 675 } 676 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 677 } 678 679 #ifdef ENABLE_CLASSIC 680 static int hci_number_free_sco_slots(void){ 681 unsigned int num_sco_packets_sent = 0; 682 btstack_linked_item_t *it; 683 if (hci_stack->synchronous_flow_control_enabled){ 684 // explicit flow control 685 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 686 hci_connection_t * connection = (hci_connection_t *) it; 687 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 688 num_sco_packets_sent += connection->num_packets_sent; 689 } 690 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 691 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 692 return 0; 693 } 694 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 695 } else { 696 // implicit flow control -- TODO 697 int num_ready = 0; 698 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 699 hci_connection_t * connection = (hci_connection_t *) it; 700 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 701 if (connection->sco_tx_ready == 0) continue; 702 num_ready++; 703 } 704 return num_ready; 705 } 706 } 707 #endif 708 709 // only used to send HCI Host Number Completed Packets 710 static int hci_can_send_comand_packet_transport(void){ 711 if (hci_stack->hci_packet_buffer_reserved) return 0; 712 713 // check for async hci transport implementations 714 if (hci_stack->hci_transport->can_send_packet_now){ 715 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 716 return 0; 717 } 718 } 719 return 1; 720 } 721 722 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 723 bool hci_can_send_command_packet_now(void){ 724 if (hci_can_send_comand_packet_transport() == 0) return false; 725 return hci_stack->num_cmd_packets > 0u; 726 } 727 728 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 729 // check for async hci transport implementations 730 if (!hci_stack->hci_transport->can_send_packet_now) return true; 731 return hci_stack->hci_transport->can_send_packet_now(packet_type); 732 } 733 734 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 735 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 736 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 737 } 738 739 bool hci_can_send_acl_le_packet_now(void){ 740 if (hci_stack->hci_packet_buffer_reserved) return false; 741 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 742 } 743 744 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 745 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 746 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 747 } 748 749 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 750 if (hci_stack->hci_packet_buffer_reserved) return false; 751 return hci_can_send_prepared_acl_packet_now(con_handle); 752 } 753 754 #ifdef ENABLE_CLASSIC 755 bool hci_can_send_acl_classic_packet_now(void){ 756 if (hci_stack->hci_packet_buffer_reserved) return false; 757 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 758 } 759 760 bool hci_can_send_prepared_sco_packet_now(void){ 761 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 762 if (hci_have_usb_transport()){ 763 return hci_stack->sco_can_send_now; 764 } else { 765 return hci_number_free_sco_slots() > 0; 766 } 767 } 768 769 bool hci_can_send_sco_packet_now(void){ 770 if (hci_stack->hci_packet_buffer_reserved) return false; 771 return hci_can_send_prepared_sco_packet_now(); 772 } 773 774 void hci_request_sco_can_send_now_event(void){ 775 hci_stack->sco_waiting_for_can_send_now = 1; 776 hci_notify_if_sco_can_send_now(); 777 } 778 #endif 779 780 // used for internal checks in l2cap.c 781 bool hci_is_packet_buffer_reserved(void){ 782 return hci_stack->hci_packet_buffer_reserved; 783 } 784 785 // reserves outgoing packet buffer. 786 // @return 1 if successful 787 bool hci_reserve_packet_buffer(void){ 788 if (hci_stack->hci_packet_buffer_reserved) { 789 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 790 return false; 791 } 792 hci_stack->hci_packet_buffer_reserved = true; 793 return true; 794 } 795 796 void hci_release_packet_buffer(void){ 797 hci_stack->hci_packet_buffer_reserved = false; 798 } 799 800 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 801 static int hci_transport_synchronous(void){ 802 return hci_stack->hci_transport->can_send_packet_now == NULL; 803 } 804 805 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 806 807 // 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); 808 809 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 810 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 811 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 812 max_acl_data_packet_length = hci_stack->le_data_packets_length; 813 } 814 815 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 816 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 817 max_acl_data_packet_length = connection->le_max_tx_octets; 818 } 819 #endif 820 821 log_debug("hci_send_acl_packet_fragments entered"); 822 823 uint8_t status = ERROR_CODE_SUCCESS; 824 // multiple packets could be send on a synchronous HCI transport 825 while (true){ 826 827 log_debug("hci_send_acl_packet_fragments loop entered"); 828 829 // get current data 830 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 831 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 832 bool more_fragments = false; 833 834 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 835 if (current_acl_data_packet_length > max_acl_data_packet_length){ 836 more_fragments = true; 837 current_acl_data_packet_length = max_acl_data_packet_length; 838 } 839 840 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 841 if (acl_header_pos > 0u){ 842 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 843 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 844 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 845 } 846 847 // update header len 848 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 849 850 // count packet 851 connection->num_packets_sent++; 852 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 853 854 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 855 if (more_fragments){ 856 // update start of next fragment to send 857 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 858 } else { 859 // done 860 hci_stack->acl_fragmentation_pos = 0; 861 hci_stack->acl_fragmentation_total_size = 0; 862 } 863 864 // send packet 865 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 866 const int size = current_acl_data_packet_length + 4; 867 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 868 hci_stack->acl_fragmentation_tx_active = 1; 869 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 870 if (err != 0){ 871 // no error from HCI Transport expected 872 status = ERROR_CODE_HARDWARE_FAILURE; 873 } 874 875 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 876 877 // done yet? 878 if (!more_fragments) break; 879 880 // can send more? 881 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 882 } 883 884 log_debug("hci_send_acl_packet_fragments loop over"); 885 886 // release buffer now for synchronous transport 887 if (hci_transport_synchronous()){ 888 hci_stack->acl_fragmentation_tx_active = 0; 889 hci_release_packet_buffer(); 890 hci_emit_transport_packet_sent(); 891 } 892 893 return status; 894 } 895 896 // pre: caller has reserved the packet buffer 897 uint8_t hci_send_acl_packet_buffer(int size){ 898 btstack_assert(hci_stack->hci_packet_buffer_reserved); 899 900 uint8_t * packet = hci_stack->hci_packet_buffer; 901 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 902 903 // check for free places on Bluetooth module 904 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 905 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 906 hci_release_packet_buffer(); 907 hci_emit_transport_packet_sent(); 908 return BTSTACK_ACL_BUFFERS_FULL; 909 } 910 911 hci_connection_t *connection = hci_connection_for_handle( con_handle); 912 if (!connection) { 913 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 914 hci_release_packet_buffer(); 915 hci_emit_transport_packet_sent(); 916 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 917 } 918 919 #ifdef ENABLE_CLASSIC 920 hci_connection_timestamp(connection); 921 #endif 922 923 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 924 925 // setup data 926 hci_stack->acl_fragmentation_total_size = size; 927 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 928 929 return hci_send_acl_packet_fragments(connection); 930 } 931 932 #ifdef ENABLE_CLASSIC 933 // pre: caller has reserved the packet buffer 934 uint8_t hci_send_sco_packet_buffer(int size){ 935 btstack_assert(hci_stack->hci_packet_buffer_reserved); 936 937 uint8_t * packet = hci_stack->hci_packet_buffer; 938 939 // skip checks in loopback mode 940 if (!hci_stack->loopback_mode){ 941 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 942 943 // check for free places on Bluetooth module 944 if (!hci_can_send_prepared_sco_packet_now()) { 945 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 946 hci_release_packet_buffer(); 947 hci_emit_transport_packet_sent(); 948 return BTSTACK_ACL_BUFFERS_FULL; 949 } 950 951 // track send packet in connection struct 952 hci_connection_t *connection = hci_connection_for_handle( con_handle); 953 if (!connection) { 954 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 955 hci_release_packet_buffer(); 956 hci_emit_transport_packet_sent(); 957 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 958 } 959 960 if (hci_have_usb_transport()){ 961 // token used 962 hci_stack->sco_can_send_now = false; 963 } else { 964 if (hci_stack->synchronous_flow_control_enabled){ 965 connection->num_packets_sent++; 966 } else { 967 connection->sco_tx_ready--; 968 } 969 } 970 } 971 972 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 973 974 #ifdef HAVE_SCO_TRANSPORT 975 hci_stack->sco_transport->send_packet(packet, size); 976 hci_release_packet_buffer(); 977 hci_emit_transport_packet_sent(); 978 979 return 0; 980 #else 981 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 982 if (hci_transport_synchronous()){ 983 hci_release_packet_buffer(); 984 hci_emit_transport_packet_sent(); 985 } 986 987 if (err != 0){ 988 return ERROR_CODE_HARDWARE_FAILURE; 989 } 990 return ERROR_CODE_SUCCESS; 991 #endif 992 } 993 #endif 994 995 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 996 static uint8_t hci_send_iso_packet_fragments(void){ 997 998 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 999 uint8_t status = ERROR_CODE_SUCCESS; 1000 // multiple packets could be send on a synchronous HCI transport 1001 while (true){ 1002 1003 // get current data 1004 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1005 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1006 bool more_fragments = false; 1007 1008 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1009 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1010 more_fragments = true; 1011 current_iso_data_packet_length = max_iso_data_packet_length; 1012 } 1013 1014 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1015 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1016 uint8_t pb_flags; 1017 if (iso_header_pos == 0u){ 1018 // first fragment, keep TS field 1019 pb_flags = more_fragments ? 0x00 : 0x02; 1020 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1021 } else { 1022 // later fragment, drop TS field 1023 pb_flags = more_fragments ? 0x01 : 0x03; 1024 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1025 } 1026 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1027 1028 // update header len 1029 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1030 1031 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1032 if (more_fragments){ 1033 // update start of next fragment to send 1034 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1035 } else { 1036 // done 1037 hci_stack->iso_fragmentation_pos = 0; 1038 hci_stack->iso_fragmentation_total_size = 0; 1039 } 1040 1041 // send packet 1042 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1043 const int size = current_iso_data_packet_length + 4; 1044 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1045 hci_stack->iso_fragmentation_tx_active = true; 1046 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1047 if (err != 0){ 1048 // no error from HCI Transport expected 1049 status = ERROR_CODE_HARDWARE_FAILURE; 1050 } 1051 1052 // done yet? 1053 if (!more_fragments) break; 1054 1055 // can send more? 1056 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1057 } 1058 1059 // release buffer now for synchronous transport 1060 if (hci_transport_synchronous()){ 1061 hci_stack->iso_fragmentation_tx_active = false; 1062 hci_release_packet_buffer(); 1063 hci_emit_transport_packet_sent(); 1064 } 1065 1066 return status; 1067 } 1068 1069 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1070 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1071 1072 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1073 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1074 if (iso_stream == NULL){ 1075 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1076 } 1077 1078 // TODO: check for space on controller 1079 1080 // track outgoing packet sent 1081 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1082 iso_stream->num_packets_sent++; 1083 1084 // setup data 1085 hci_stack->iso_fragmentation_total_size = size; 1086 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1087 1088 return hci_send_iso_packet_fragments(); 1089 } 1090 #endif 1091 1092 static void acl_handler(uint8_t *packet, uint16_t size){ 1093 1094 // get info 1095 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1096 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1097 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1098 uint16_t acl_length = READ_ACL_LENGTH(packet); 1099 1100 // ignore non-registered handle 1101 if (!conn){ 1102 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1103 return; 1104 } 1105 1106 // assert packet is complete 1107 if ((acl_length + 4u) != size){ 1108 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1109 return; 1110 } 1111 1112 #ifdef ENABLE_CLASSIC 1113 // update idle timestamp 1114 hci_connection_timestamp(conn); 1115 #endif 1116 1117 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1118 hci_stack->host_completed_packets = 1; 1119 conn->num_packets_completed++; 1120 #endif 1121 1122 // handle different packet types 1123 switch (acl_flags & 0x03u) { 1124 1125 case 0x01: // continuation fragment 1126 1127 // sanity checks 1128 if (conn->acl_recombination_pos == 0u) { 1129 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1130 return; 1131 } 1132 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1133 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1134 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1135 conn->acl_recombination_pos = 0; 1136 return; 1137 } 1138 1139 // append fragment payload (header already stored) 1140 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1141 &packet[4], acl_length); 1142 conn->acl_recombination_pos += acl_length; 1143 1144 // forward complete L2CAP packet if complete. 1145 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1146 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1147 // reset recombination buffer 1148 conn->acl_recombination_length = 0; 1149 conn->acl_recombination_pos = 0; 1150 } 1151 break; 1152 1153 case 0x02: { // first fragment 1154 1155 // sanity check 1156 if (conn->acl_recombination_pos) { 1157 log_error( "ACL First Fragment but data in buffer for handle 0x%02x, dropping stale fragments", con_handle); 1158 conn->acl_recombination_pos = 0; 1159 } 1160 1161 // peek into L2CAP packet! 1162 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1163 1164 // compare fragment size to L2CAP packet size 1165 if (acl_length >= (l2cap_length + 4u)){ 1166 // forward fragment as L2CAP packet 1167 hci_emit_acl_packet(packet, acl_length + 4u); 1168 } else { 1169 1170 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1171 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1172 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1173 return; 1174 } 1175 1176 // store first fragment and tweak acl length for complete package 1177 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1178 packet, acl_length + 4u); 1179 conn->acl_recombination_pos = acl_length + 4u; 1180 conn->acl_recombination_length = l2cap_length; 1181 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1182 } 1183 break; 1184 1185 } 1186 default: 1187 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1188 return; 1189 } 1190 1191 // execute main loop 1192 hci_run(); 1193 } 1194 1195 static void hci_connection_stop_timer(hci_connection_t * conn){ 1196 btstack_run_loop_remove_timer(&conn->timeout); 1197 #ifdef ENABLE_CLASSIC 1198 btstack_run_loop_remove_timer(&conn->timeout_sco); 1199 #endif 1200 } 1201 1202 static void hci_shutdown_connection(hci_connection_t *conn){ 1203 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1204 1205 #ifdef ENABLE_CLASSIC 1206 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1207 bd_addr_type_t addr_type = conn->address_type; 1208 #endif 1209 #ifdef HAVE_SCO_TRANSPORT 1210 hci_con_handle_t con_handle = conn->con_handle; 1211 #endif 1212 #endif 1213 1214 hci_connection_stop_timer(conn); 1215 1216 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1217 btstack_memory_hci_connection_free( conn ); 1218 1219 // now it's gone 1220 hci_emit_nr_connections_changed(); 1221 1222 #ifdef ENABLE_CLASSIC 1223 #ifdef ENABLE_SCO_OVER_HCI 1224 // update SCO 1225 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1226 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1227 } 1228 #endif 1229 #ifdef HAVE_SCO_TRANSPORT 1230 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1231 hci_stack->sco_transport->close(con_handle); 1232 } 1233 #endif 1234 #endif 1235 } 1236 1237 #ifdef ENABLE_CLASSIC 1238 1239 static const uint16_t packet_type_sizes[] = { 1240 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1241 HCI_ACL_DH1_SIZE, 0, 0, 0, 1242 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1243 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1244 }; 1245 static const uint8_t packet_type_feature_requirement_bit[] = { 1246 0, // 3 slot packets 1247 1, // 5 slot packets 1248 25, // EDR 2 mpbs 1249 26, // EDR 3 mbps 1250 39, // 3 slot EDR packts 1251 40, // 5 slot EDR packet 1252 }; 1253 static const uint16_t packet_type_feature_packet_mask[] = { 1254 0x0f00, // 3 slot packets 1255 0xf000, // 5 slot packets 1256 0x1102, // EDR 2 mpbs 1257 0x2204, // EDR 3 mbps 1258 0x0300, // 3 slot EDR packts 1259 0x3000, // 5 slot EDR packet 1260 }; 1261 1262 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1263 // enable packet types based on size 1264 uint16_t packet_types = 0; 1265 unsigned int i; 1266 for (i=0;i<16;i++){ 1267 if (packet_type_sizes[i] == 0) continue; 1268 if (packet_type_sizes[i] <= buffer_size){ 1269 packet_types |= 1 << i; 1270 } 1271 } 1272 // disable packet types due to missing local supported features 1273 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1274 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1275 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1276 if (feature_set) continue; 1277 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1278 packet_types &= ~packet_type_feature_packet_mask[i]; 1279 } 1280 // flip bits for "may not be used" 1281 packet_types ^= 0x3306; 1282 return packet_types; 1283 } 1284 1285 uint16_t hci_usable_acl_packet_types(void){ 1286 return hci_stack->packet_types; 1287 } 1288 #endif 1289 1290 uint8_t* hci_get_outgoing_packet_buffer(void){ 1291 // hci packet buffer is >= acl data packet length 1292 return hci_stack->hci_packet_buffer; 1293 } 1294 1295 uint16_t hci_max_acl_data_packet_length(void){ 1296 return hci_stack->acl_data_packet_length; 1297 } 1298 1299 #ifdef ENABLE_CLASSIC 1300 bool hci_extended_sco_link_supported(void){ 1301 // No. 31, byte 3, bit 7 1302 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1303 } 1304 #endif 1305 1306 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1307 // No. 54, byte 6, bit 6 1308 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1309 } 1310 1311 #ifdef ENABLE_CLASSIC 1312 static int gap_ssp_supported(void){ 1313 // No. 51, byte 6, bit 3 1314 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1315 } 1316 #endif 1317 1318 static int hci_classic_supported(void){ 1319 #ifdef ENABLE_CLASSIC 1320 // No. 37, byte 4, bit 5, = No BR/EDR Support 1321 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1322 #else 1323 return 0; 1324 #endif 1325 } 1326 1327 static int hci_le_supported(void){ 1328 #ifdef ENABLE_BLE 1329 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1330 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1331 #else 1332 return 0; 1333 #endif 1334 } 1335 1336 static bool hci_command_supported(uint8_t command_index){ 1337 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1338 } 1339 1340 #ifdef ENABLE_BLE 1341 1342 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1343 static bool hci_extended_advertising_supported(void){ 1344 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1345 } 1346 #endif 1347 1348 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1349 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1350 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1351 } else { 1352 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1353 } 1354 } 1355 1356 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1357 *addr_type = hci_stack->le_own_addr_type; 1358 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1359 } 1360 1361 #ifdef ENABLE_LE_PERIPHERAL 1362 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1363 *addr_type = hci_stack->le_advertisements_own_addr_type; 1364 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1365 }; 1366 #endif 1367 1368 #ifdef ENABLE_LE_CENTRAL 1369 1370 /** 1371 * @brief Get own addr type and address used for LE connections (Central) 1372 */ 1373 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1374 *addr_type = hci_stack->le_connection_own_addr_type; 1375 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1376 } 1377 1378 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1379 1380 uint16_t offset = 3; 1381 uint8_t num_reports = packet[offset]; 1382 offset += 1; 1383 1384 uint16_t i; 1385 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1386 for (i=0; (i<num_reports) && (offset < size);i++){ 1387 // sanity checks on data_length: 1388 uint8_t data_length = packet[offset + 8]; 1389 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1390 if ((offset + 9u + data_length + 1u) > size) return; 1391 // setup event 1392 uint8_t event_size = 10u + data_length; 1393 uint16_t pos = 0; 1394 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1395 event[pos++] = event_size; 1396 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1397 offset += 8; 1398 pos += 8; 1399 event[pos++] = packet[offset + 1 + data_length]; // rssi 1400 event[pos++] = data_length; 1401 offset++; 1402 (void)memcpy(&event[pos], &packet[offset], data_length); 1403 pos += data_length; 1404 offset += data_length + 1u; // rssi 1405 hci_emit_event(event, pos, 1); 1406 } 1407 } 1408 1409 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1410 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1411 uint16_t offset = 3; 1412 uint8_t num_reports = packet[offset++]; 1413 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1414 uint8_t i; 1415 for (i=0; (i<num_reports) && (offset < size);i++){ 1416 // sanity checks on data_length: 1417 uint16_t data_length = packet[offset + 23]; 1418 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1419 if ((offset + 24u + data_length) > size) return; 1420 uint16_t event_type = little_endian_read_16(packet, offset); 1421 offset += 2; 1422 if ((event_type & 0x10) != 0) { 1423 // setup legacy event 1424 uint8_t legacy_event_type; 1425 switch (event_type){ 1426 case 0b0010011: 1427 // ADV_IND 1428 legacy_event_type = 0; 1429 break; 1430 case 0b0010101: 1431 // ADV_DIRECT_IND 1432 legacy_event_type = 1; 1433 break; 1434 case 0b0010010: 1435 // ADV_SCAN_IND 1436 legacy_event_type = 2; 1437 break; 1438 case 0b0010000: 1439 // ADV_NONCONN_IND 1440 legacy_event_type = 3; 1441 break; 1442 case 0b0011011: 1443 case 0b0011010: 1444 // SCAN_RSP 1445 legacy_event_type = 4; 1446 break; 1447 default: 1448 legacy_event_type = 0; 1449 break; 1450 } 1451 uint16_t pos = 0; 1452 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1453 event[pos++] = 10u + data_length; 1454 event[pos++] = legacy_event_type; 1455 // copy address type + address 1456 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1457 offset += 7; 1458 pos += 7; 1459 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1460 offset += 4; 1461 // copy rssi 1462 event[pos++] = packet[offset++]; 1463 // skip periodic advertising interval and direct address 1464 offset += 9; 1465 // copy data len + data; 1466 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1467 pos += 1 +data_length; 1468 offset += 1+ data_length; 1469 hci_emit_event(event, pos, 1); 1470 } else { 1471 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1472 uint8_t report_len = 24 + data_length; 1473 event[1] = report_len; 1474 little_endian_store_16(event, 2, event_type); 1475 memcpy(&event[4], &packet[offset], report_len); 1476 offset += report_len; 1477 hci_emit_event(event, 2 + report_len, 1); 1478 } 1479 } 1480 } 1481 #endif 1482 1483 #endif 1484 #endif 1485 1486 #ifdef ENABLE_BLE 1487 #ifdef ENABLE_LE_PERIPHERAL 1488 static void hci_update_advertisements_enabled_for_current_roles(void){ 1489 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1490 // get number of active le slave connections 1491 int num_slave_connections = 0; 1492 btstack_linked_list_iterator_t it; 1493 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1494 while (btstack_linked_list_iterator_has_next(&it)){ 1495 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1496 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1497 if (con->state != OPEN) continue; 1498 if (con->role != HCI_ROLE_SLAVE) continue; 1499 if (!hci_is_le_connection(con)) continue; 1500 num_slave_connections++; 1501 } 1502 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1503 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1504 } else { 1505 hci_stack->le_advertisements_enabled_for_current_roles = false; 1506 } 1507 } 1508 #endif 1509 #endif 1510 1511 #ifdef ENABLE_CLASSIC 1512 static void gap_run_set_local_name(void){ 1513 hci_reserve_packet_buffer(); 1514 uint8_t * packet = hci_stack->hci_packet_buffer; 1515 // construct HCI Command and send 1516 uint16_t opcode = hci_write_local_name.opcode; 1517 hci_stack->last_cmd_opcode = opcode; 1518 packet[0] = opcode & 0xff; 1519 packet[1] = opcode >> 8; 1520 packet[2] = DEVICE_NAME_LEN; 1521 memset(&packet[3], 0, DEVICE_NAME_LEN); 1522 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1523 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1524 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1525 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1526 // expand '00:00:00:00:00:00' in name with bd_addr 1527 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1528 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1529 } 1530 1531 static void gap_run_set_eir_data(void){ 1532 hci_reserve_packet_buffer(); 1533 uint8_t * packet = hci_stack->hci_packet_buffer; 1534 // construct HCI Command in-place and send 1535 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1536 hci_stack->last_cmd_opcode = opcode; 1537 uint16_t offset = 0; 1538 packet[offset++] = opcode & 0xff; 1539 packet[offset++] = opcode >> 8; 1540 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1541 packet[offset++] = 0; // FEC not required 1542 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1543 if (hci_stack->eir_data){ 1544 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1545 ad_context_t context; 1546 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1547 uint8_t data_type = ad_iterator_get_data_type(&context); 1548 uint8_t size = ad_iterator_get_data_len(&context); 1549 const uint8_t *data = ad_iterator_get_data(&context); 1550 // copy item 1551 packet[offset++] = size + 1; 1552 packet[offset++] = data_type; 1553 memcpy(&packet[offset], data, size); 1554 // update name item 1555 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1556 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1557 } 1558 offset += size; 1559 } 1560 } else { 1561 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1562 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1563 packet[offset++] = bytes_to_copy + 1; 1564 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1565 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1566 // expand '00:00:00:00:00:00' in name with bd_addr 1567 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1568 } 1569 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1570 } 1571 1572 static void hci_run_gap_tasks_classic(void){ 1573 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1574 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1575 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1576 return; 1577 } 1578 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1579 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1580 gap_run_set_local_name(); 1581 return; 1582 } 1583 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1584 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1585 gap_run_set_eir_data(); 1586 return; 1587 } 1588 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1589 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1590 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1591 return; 1592 } 1593 // write page scan activity 1594 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1595 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1596 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1597 return; 1598 } 1599 // write page scan type 1600 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1601 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1602 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1603 return; 1604 } 1605 // write page timeout 1606 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1607 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1608 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1609 return; 1610 } 1611 // send scan enable 1612 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1613 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1614 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1615 return; 1616 } 1617 // send write scan activity 1618 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1619 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1620 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1621 return; 1622 } 1623 } 1624 #endif 1625 1626 #ifndef HAVE_HOST_CONTROLLER_API 1627 1628 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1629 if (!hci_stack->config) return 0; 1630 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1631 // Limit baud rate for Broadcom chipsets to 3 mbps 1632 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1633 baud_rate = 3000000; 1634 } 1635 return baud_rate; 1636 } 1637 1638 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1639 UNUSED(ds); 1640 1641 switch (hci_stack->substate){ 1642 case HCI_INIT_W4_SEND_RESET: 1643 log_info("Resend HCI Reset"); 1644 hci_stack->substate = HCI_INIT_SEND_RESET; 1645 hci_stack->num_cmd_packets = 1; 1646 hci_run(); 1647 break; 1648 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1649 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1650 if (hci_stack->hci_transport->reset_link){ 1651 hci_stack->hci_transport->reset_link(); 1652 } 1653 1654 /* fall through */ 1655 1656 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1657 log_info("Resend HCI Reset - CSR Warm Boot"); 1658 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1659 hci_stack->num_cmd_packets = 1; 1660 hci_run(); 1661 break; 1662 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1663 if (hci_stack->hci_transport->set_baudrate){ 1664 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1665 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1666 hci_stack->hci_transport->set_baudrate(baud_rate); 1667 } 1668 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1669 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1670 if (hci_stack->hci_transport->reset_link){ 1671 log_info("Link Reset"); 1672 hci_stack->hci_transport->reset_link(); 1673 } 1674 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1675 hci_run(); 1676 } 1677 break; 1678 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1679 // otherwise continue 1680 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1681 hci_send_cmd(&hci_read_local_supported_commands); 1682 break; 1683 default: 1684 break; 1685 } 1686 } 1687 #endif 1688 1689 static void hci_initializing_next_state(void){ 1690 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1691 } 1692 1693 static void hci_init_done(void){ 1694 // done. tell the app 1695 log_info("hci_init_done -> HCI_STATE_WORKING"); 1696 hci_stack->state = HCI_STATE_WORKING; 1697 hci_emit_state(); 1698 } 1699 1700 // assumption: hci_can_send_command_packet_now() == true 1701 static void hci_initializing_run(void){ 1702 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1703 1704 if (!hci_can_send_command_packet_now()) return; 1705 1706 #ifndef HAVE_HOST_CONTROLLER_API 1707 bool need_baud_change = hci_stack->config 1708 && hci_stack->chipset 1709 && hci_stack->chipset->set_baudrate_command 1710 && hci_stack->hci_transport->set_baudrate 1711 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1712 #endif 1713 1714 switch (hci_stack->substate){ 1715 case HCI_INIT_SEND_RESET: 1716 hci_state_reset(); 1717 1718 #ifndef HAVE_HOST_CONTROLLER_API 1719 // prepare reset if command complete not received in 100ms 1720 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1721 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1722 btstack_run_loop_add_timer(&hci_stack->timeout); 1723 #endif 1724 // send command 1725 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1726 hci_send_cmd(&hci_reset); 1727 break; 1728 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1729 hci_send_cmd(&hci_read_local_version_information); 1730 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1731 break; 1732 1733 #ifndef HAVE_HOST_CONTROLLER_API 1734 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1735 hci_state_reset(); 1736 // prepare reset if command complete not received in 100ms 1737 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1738 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1739 btstack_run_loop_add_timer(&hci_stack->timeout); 1740 // send command 1741 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1742 hci_send_cmd(&hci_reset); 1743 break; 1744 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1745 hci_state_reset(); 1746 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1747 hci_send_cmd(&hci_reset); 1748 break; 1749 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1750 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1751 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1752 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1753 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1754 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1755 break; 1756 } 1757 case HCI_INIT_SET_BD_ADDR: 1758 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1759 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1760 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1761 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1762 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1763 break; 1764 case HCI_INIT_SEND_READ_LOCAL_NAME: 1765 #ifdef ENABLE_CLASSIC 1766 hci_send_cmd(&hci_read_local_name); 1767 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1768 break; 1769 #endif 1770 /* fall through */ 1771 1772 case HCI_INIT_SEND_BAUD_CHANGE: 1773 if (need_baud_change) { 1774 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1775 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1776 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1777 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1778 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1779 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1780 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1781 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1782 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1783 btstack_run_loop_add_timer(&hci_stack->timeout); 1784 } 1785 break; 1786 } 1787 1788 /* fall through */ 1789 1790 case HCI_INIT_CUSTOM_INIT: 1791 // Custom initialization 1792 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1793 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1794 bool send_cmd = false; 1795 switch (hci_stack->chipset_result){ 1796 case BTSTACK_CHIPSET_VALID_COMMAND: 1797 send_cmd = true; 1798 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1799 break; 1800 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1801 send_cmd = true; 1802 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1803 log_info("CSR Warm Boot"); 1804 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1805 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1806 btstack_run_loop_add_timer(&hci_stack->timeout); 1807 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1808 && hci_stack->config 1809 && hci_stack->chipset 1810 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1811 && hci_stack->hci_transport->set_baudrate 1812 && hci_transport_uart_get_main_baud_rate()){ 1813 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1814 } else { 1815 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1816 } 1817 break; 1818 default: 1819 break; 1820 } 1821 1822 if (send_cmd){ 1823 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1824 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1825 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1826 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1827 break; 1828 } 1829 log_info("Init script done"); 1830 1831 // Init script download on Broadcom chipsets causes: 1832 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1833 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1834 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1835 1836 // - baud rate to reset, restore UART baud rate if needed 1837 if (need_baud_change) { 1838 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1839 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1840 hci_stack->hci_transport->set_baudrate(baud_rate); 1841 } 1842 1843 uint16_t bcm_delay_ms = 300; 1844 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1845 // -> Work around: wait here. 1846 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1847 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1848 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1849 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1850 btstack_run_loop_add_timer(&hci_stack->timeout); 1851 break; 1852 } 1853 } 1854 #endif 1855 /* fall through */ 1856 1857 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1858 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1859 hci_send_cmd(&hci_read_local_supported_commands); 1860 break; 1861 case HCI_INIT_READ_BD_ADDR: 1862 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1863 hci_send_cmd(&hci_read_bd_addr); 1864 break; 1865 case HCI_INIT_READ_BUFFER_SIZE: 1866 // only read buffer size if supported 1867 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1868 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1869 hci_send_cmd(&hci_read_buffer_size); 1870 break; 1871 } 1872 1873 /* fall through */ 1874 1875 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1876 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1877 hci_send_cmd(&hci_read_local_supported_features); 1878 break; 1879 1880 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1881 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1882 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1883 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1884 break; 1885 case HCI_INIT_HOST_BUFFER_SIZE: 1886 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1887 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1888 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1889 break; 1890 #endif 1891 1892 case HCI_INIT_SET_EVENT_MASK: 1893 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1894 if (hci_le_supported()){ 1895 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1896 } else { 1897 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1898 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1899 } 1900 break; 1901 1902 case HCI_INIT_SET_EVENT_MASK_2: 1903 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 1904 // setting Event Mask 2 causes Controller to drop Encryption Change events. 1905 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 1906 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 1907 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1908 // Encryption Change Event v2 - bit 25 1909 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1910 break; 1911 } 1912 1913 #ifdef ENABLE_CLASSIC 1914 /* fall through */ 1915 1916 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 1917 if (hci_classic_supported() && gap_ssp_supported()){ 1918 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 1919 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 1920 break; 1921 } 1922 1923 /* fall through */ 1924 1925 case HCI_INIT_WRITE_INQUIRY_MODE: 1926 if (hci_classic_supported()){ 1927 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 1928 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 1929 break; 1930 } 1931 1932 /* fall through */ 1933 1934 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 1935 // skip write secure connections host support if not supported or disabled 1936 if (hci_classic_supported() && hci_stack->secure_connections_enable 1937 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 1938 hci_stack->secure_connections_active = true; 1939 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 1940 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 1941 break; 1942 } 1943 1944 /* fall through */ 1945 1946 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 1947 // skip set min encryption key size 1948 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 1949 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 1950 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 1951 break; 1952 } 1953 1954 #ifdef ENABLE_SCO_OVER_HCI 1955 /* fall through */ 1956 1957 // only sent if ENABLE_SCO_OVER_HCI is defined 1958 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 1959 // skip write synchronous flow control if not supported 1960 if (hci_classic_supported() 1961 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 1962 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 1963 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 1964 break; 1965 } 1966 /* fall through */ 1967 1968 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 1969 // skip write default erroneous data reporting if not supported 1970 if (hci_classic_supported() 1971 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 1972 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 1973 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 1974 break; 1975 } 1976 #endif 1977 1978 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 1979 /* fall through */ 1980 1981 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 1982 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 1983 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 1984 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 1985 #ifdef ENABLE_SCO_OVER_HCI 1986 log_info("BCM: Route SCO data via HCI transport"); 1987 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 1988 #endif 1989 #ifdef ENABLE_SCO_OVER_PCM 1990 log_info("BCM: Route SCO data via PCM interface"); 1991 #ifdef ENABLE_BCM_PCM_WBS 1992 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 1993 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 1994 #else 1995 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 1996 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 1997 #endif 1998 #endif 1999 break; 2000 } 2001 #endif 2002 2003 #ifdef ENABLE_SCO_OVER_PCM 2004 /* fall through */ 2005 2006 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2007 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2008 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2009 log_info("BCM: Config PCM interface for I2S"); 2010 #ifdef ENABLE_BCM_PCM_WBS 2011 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2012 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2013 #else 2014 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2015 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2016 #endif 2017 break; 2018 } 2019 #endif 2020 #endif 2021 2022 #ifdef ENABLE_BLE 2023 /* fall through */ 2024 2025 // LE INIT 2026 case HCI_INIT_LE_READ_BUFFER_SIZE: 2027 if (hci_le_supported()){ 2028 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2029 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2030 hci_send_cmd(&hci_le_read_buffer_size_v2); 2031 } else { 2032 hci_send_cmd(&hci_le_read_buffer_size); 2033 } 2034 break; 2035 } 2036 2037 /* fall through */ 2038 2039 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2040 // skip write le host if not supported (e.g. on LE only EM9301) 2041 if (hci_le_supported() 2042 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2043 // LE Supported Host = 1, Simultaneous Host = 0 2044 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2045 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2046 break; 2047 } 2048 2049 /* fall through */ 2050 2051 case HCI_INIT_LE_SET_EVENT_MASK: 2052 if (hci_le_supported()){ 2053 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2054 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2055 break; 2056 } 2057 #endif 2058 2059 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2060 /* fall through */ 2061 2062 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2063 if (hci_le_supported() 2064 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2065 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2066 hci_send_cmd(&hci_le_read_maximum_data_length); 2067 break; 2068 } 2069 2070 /* fall through */ 2071 2072 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2073 if (hci_le_supported() 2074 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2075 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2076 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2077 break; 2078 } 2079 #endif 2080 2081 #ifdef ENABLE_LE_CENTRAL 2082 /* fall through */ 2083 2084 case HCI_INIT_READ_WHITE_LIST_SIZE: 2085 if (hci_le_supported()){ 2086 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2087 hci_send_cmd(&hci_le_read_white_list_size); 2088 break; 2089 } 2090 2091 #endif 2092 2093 #ifdef ENABLE_LE_PERIPHERAL 2094 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2095 /* fall through */ 2096 2097 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2098 if (hci_extended_advertising_supported()){ 2099 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2100 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2101 break; 2102 } 2103 #endif 2104 #endif 2105 /* fall through */ 2106 2107 case HCI_INIT_DONE: 2108 hci_stack->substate = HCI_INIT_DONE; 2109 // main init sequence complete 2110 #ifdef ENABLE_CLASSIC 2111 // check if initial Classic GAP Tasks are completed 2112 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2113 hci_run_gap_tasks_classic(); 2114 break; 2115 } 2116 #endif 2117 #ifdef ENABLE_BLE 2118 #ifdef ENABLE_LE_CENTRAL 2119 // check if initial LE GAP Tasks are completed 2120 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2121 hci_run_general_gap_le(); 2122 break; 2123 } 2124 #endif 2125 #endif 2126 hci_init_done(); 2127 break; 2128 2129 default: 2130 return; 2131 } 2132 } 2133 2134 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2135 bool command_completed = false; 2136 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2137 uint16_t opcode = little_endian_read_16(packet,3); 2138 if (opcode == hci_stack->last_cmd_opcode){ 2139 command_completed = true; 2140 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2141 } else { 2142 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2143 } 2144 } 2145 2146 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2147 uint8_t status = packet[2]; 2148 uint16_t opcode = little_endian_read_16(packet,4); 2149 if (opcode == hci_stack->last_cmd_opcode){ 2150 if (status){ 2151 command_completed = true; 2152 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2153 } else { 2154 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2155 } 2156 } else { 2157 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2158 } 2159 } 2160 #ifndef HAVE_HOST_CONTROLLER_API 2161 // Vendor == CSR 2162 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2163 // TODO: track actual command 2164 command_completed = true; 2165 } 2166 2167 // Vendor == Toshiba 2168 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2169 // TODO: track actual command 2170 command_completed = true; 2171 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2172 hci_stack->num_cmd_packets = 1; 2173 } 2174 #endif 2175 2176 return command_completed; 2177 } 2178 2179 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2180 2181 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2182 2183 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2184 2185 #ifndef HAVE_HOST_CONTROLLER_API 2186 2187 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2188 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2189 // 2190 // HCI Reset 2191 // Timeout 100 ms 2192 // HCI Reset 2193 // Command Complete Reset 2194 // HCI Read Local Version Information 2195 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2196 // hang... 2197 // 2198 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2199 if (!command_completed 2200 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2201 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2202 2203 uint16_t opcode = little_endian_read_16(packet,3); 2204 if (opcode == hci_reset.opcode){ 2205 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2206 return; 2207 } 2208 } 2209 2210 // CSR & H5 2211 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2212 if (!command_completed 2213 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2214 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2215 2216 uint16_t opcode = little_endian_read_16(packet,3); 2217 if (opcode == hci_reset.opcode){ 2218 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2219 return; 2220 } 2221 } 2222 2223 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2224 // fix: Correct substate and behave as command below 2225 if (command_completed){ 2226 switch (hci_stack->substate){ 2227 case HCI_INIT_SEND_RESET: 2228 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2229 break; 2230 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2231 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2232 break; 2233 default: 2234 break; 2235 } 2236 } 2237 2238 #endif 2239 2240 if (!command_completed) return; 2241 2242 bool need_baud_change = false; 2243 bool need_addr_change = false; 2244 2245 #ifndef HAVE_HOST_CONTROLLER_API 2246 need_baud_change = hci_stack->config 2247 && hci_stack->chipset 2248 && hci_stack->chipset->set_baudrate_command 2249 && hci_stack->hci_transport->set_baudrate 2250 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2251 2252 need_addr_change = hci_stack->custom_bd_addr_set 2253 && hci_stack->chipset 2254 && hci_stack->chipset->set_bd_addr_command; 2255 #endif 2256 2257 switch(hci_stack->substate){ 2258 2259 #ifndef HAVE_HOST_CONTROLLER_API 2260 case HCI_INIT_SEND_RESET: 2261 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2262 // fix: just correct substate and behave as command below 2263 2264 /* fall through */ 2265 #endif 2266 2267 case HCI_INIT_W4_SEND_RESET: 2268 btstack_run_loop_remove_timer(&hci_stack->timeout); 2269 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2270 return; 2271 2272 #ifndef HAVE_HOST_CONTROLLER_API 2273 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2274 // for STLC2500D, baud rate change already happened. 2275 // for others, baud rate gets changed now 2276 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2277 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2278 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2279 hci_stack->hci_transport->set_baudrate(baud_rate); 2280 } 2281 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2282 return; 2283 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2284 btstack_run_loop_remove_timer(&hci_stack->timeout); 2285 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2286 return; 2287 case HCI_INIT_W4_CUSTOM_INIT: 2288 // repeat custom init 2289 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2290 return; 2291 #endif 2292 2293 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2294 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2295 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2296 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2297 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2298 return; 2299 } 2300 if (need_addr_change){ 2301 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2302 return; 2303 } 2304 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2305 return; 2306 #ifndef HAVE_HOST_CONTROLLER_API 2307 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2308 if (need_baud_change){ 2309 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2310 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2311 hci_stack->hci_transport->set_baudrate(baud_rate); 2312 } 2313 if (need_addr_change){ 2314 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2315 return; 2316 } 2317 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2318 return; 2319 case HCI_INIT_W4_SET_BD_ADDR: 2320 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2321 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2322 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2323 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2324 return; 2325 } 2326 // skipping st warm boot 2327 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2328 return; 2329 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2330 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2331 return; 2332 #endif 2333 2334 case HCI_INIT_DONE: 2335 // set state if we came here by fall through 2336 hci_stack->substate = HCI_INIT_DONE; 2337 return; 2338 2339 default: 2340 break; 2341 } 2342 hci_initializing_next_state(); 2343 } 2344 2345 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2346 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2347 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2348 // check if we have been aware of the HCI connection 2349 switch (conn->state){ 2350 case SENT_CREATE_CONNECTION: 2351 case RECEIVED_CONNECTION_REQUEST: 2352 break; 2353 default: 2354 return; 2355 } 2356 2357 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2358 bd_addr_t bd_address; 2359 (void)memcpy(&bd_address, conn->address, 6); 2360 2361 #ifdef ENABLE_CLASSIC 2362 // cache needed data 2363 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2364 #endif 2365 2366 // connection failed, remove entry 2367 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2368 btstack_memory_hci_connection_free( conn ); 2369 2370 #ifdef ENABLE_CLASSIC 2371 // notify client if dedicated bonding 2372 if (notify_dedicated_bonding_failed){ 2373 log_info("hci notify_dedicated_bonding_failed"); 2374 hci_emit_dedicated_bonding_result(bd_address, status); 2375 } 2376 2377 // if authentication error, also delete link key 2378 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2379 gap_drop_link_key_for_bd_addr(bd_address); 2380 } 2381 #else 2382 UNUSED(status); 2383 #endif 2384 } 2385 2386 #ifdef ENABLE_CLASSIC 2387 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2388 // SSP Controller 2389 if (features[6] & (1 << 3)){ 2390 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2391 } 2392 // eSCO 2393 if (features[3] & (1<<7)){ 2394 conn->remote_supported_features[0] |= 1; 2395 } 2396 // Extended features 2397 if (features[7] & (1<<7)){ 2398 conn->remote_supported_features[0] |= 2; 2399 } 2400 } 2401 2402 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2403 // SSP Host 2404 if (features[0] & (1 << 0)){ 2405 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2406 } 2407 // SC Host 2408 if (features[0] & (1 << 3)){ 2409 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2410 } 2411 } 2412 2413 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2414 // SC Controller 2415 if (features[1] & (1 << 0)){ 2416 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2417 } 2418 } 2419 2420 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2421 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2422 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2423 log_info("Remote features %02x, bonding flags %x", conn->remote_supported_features[0], conn->bonding_flags); 2424 if (conn->bonding_flags & BONDING_DEDICATED){ 2425 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2426 } 2427 } 2428 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2429 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2430 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2431 } 2432 2433 #endif 2434 2435 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2436 // handle BT initialization 2437 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2438 hci_initializing_event_handler(packet, size); 2439 } 2440 2441 // help with BT sleep 2442 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2443 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2444 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2445 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2446 hci_initializing_next_state(); 2447 } 2448 } 2449 2450 #ifdef ENABLE_CLASSIC 2451 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2452 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2453 conn->encryption_key_size = encryption_key_size; 2454 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2455 2456 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2457 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2458 conn->bonding_flags &= ~BONDING_DEDICATED; 2459 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2460 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2461 return; 2462 } 2463 2464 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2465 conn->requested_security_level = LEVEL_0; 2466 hci_emit_security_level(conn->con_handle, security_level); 2467 return; 2468 } 2469 2470 // Request remote features if not already done 2471 hci_trigger_remote_features_for_connection(conn); 2472 2473 // Request Authentication if not already done 2474 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2475 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2476 } 2477 #endif 2478 2479 static void hci_store_local_supported_commands(const uint8_t * packet){ 2480 // create mapping table 2481 #define X(name, offset, bit) { offset, bit }, 2482 static struct { 2483 uint8_t byte_offset; 2484 uint8_t bit_position; 2485 } supported_hci_commands_map [] = { 2486 SUPPORTED_HCI_COMMANDS 2487 }; 2488 #undef X 2489 2490 // create names for debug purposes 2491 #ifdef ENABLE_LOG_DEBUG 2492 #define X(name, offset, bit) #name, 2493 static const char * command_names[] = { 2494 SUPPORTED_HCI_COMMANDS 2495 }; 2496 #undef X 2497 #endif 2498 2499 hci_stack->local_supported_commands = 0; 2500 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2501 uint16_t i; 2502 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2503 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2504 #ifdef ENABLE_LOG_DEBUG 2505 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); 2506 #else 2507 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2508 #endif 2509 hci_stack->local_supported_commands |= (1LU << i); 2510 } 2511 } 2512 log_info("Local supported commands summary %04x", hci_stack->local_supported_commands); 2513 } 2514 2515 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2516 UNUSED(size); 2517 2518 uint16_t manufacturer; 2519 #ifdef ENABLE_CLASSIC 2520 hci_con_handle_t handle; 2521 hci_connection_t * conn; 2522 uint8_t status; 2523 #endif 2524 // get num cmd packets - limit to 1 to reduce complexity 2525 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2526 2527 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2528 switch (opcode){ 2529 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2530 if (packet[5]) break; 2531 // terminate, name 248 chars 2532 packet[6+248] = 0; 2533 log_info("local name: %s", &packet[6]); 2534 break; 2535 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2536 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2537 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2538 uint16_t acl_len = little_endian_read_16(packet, 6); 2539 uint16_t sco_len = packet[8]; 2540 2541 // determine usable ACL/SCO payload size 2542 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2543 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2544 2545 hci_stack->acl_packets_total_num = (uint8_t) little_endian_read_16(packet, 9); 2546 hci_stack->sco_packets_total_num = (uint8_t) little_endian_read_16(packet, 11); 2547 2548 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2549 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2550 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2551 } 2552 break; 2553 case HCI_OPCODE_HCI_READ_RSSI: 2554 if (packet[5] == ERROR_CODE_SUCCESS){ 2555 uint8_t event[5]; 2556 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2557 event[1] = 3; 2558 (void)memcpy(&event[2], &packet[6], 3); 2559 hci_emit_event(event, sizeof(event), 1); 2560 } 2561 break; 2562 #ifdef ENABLE_BLE 2563 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2564 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2565 hci_stack->le_iso_packets_total_num = packet[11]; 2566 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2567 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2568 2569 /* fall through */ 2570 2571 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2572 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2573 hci_stack->le_acl_packets_total_num = packet[8]; 2574 // determine usable ACL payload size 2575 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2576 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2577 } 2578 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); 2579 break; 2580 #endif 2581 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2582 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2583 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2584 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2585 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); 2586 break; 2587 #endif 2588 #ifdef ENABLE_LE_CENTRAL 2589 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2590 hci_stack->le_whitelist_capacity = packet[6]; 2591 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2592 break; 2593 #endif 2594 #ifdef ENABLE_LE_PERIPHERAL 2595 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2596 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2597 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2598 break; 2599 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2600 if (hci_stack->le_advertising_set_in_current_command != 0) { 2601 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2602 hci_stack->le_advertising_set_in_current_command = 0; 2603 if (advertising_set == NULL) break; 2604 uint8_t adv_status = packet[6]; 2605 uint8_t tx_power = packet[7]; 2606 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 }; 2607 if (adv_status == 0){ 2608 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2609 } 2610 hci_emit_event(event, sizeof(event), 1); 2611 } 2612 break; 2613 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2614 if (hci_stack->le_advertising_set_in_current_command != 0) { 2615 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2616 hci_stack->le_advertising_set_in_current_command = 0; 2617 if (advertising_set == NULL) break; 2618 uint8_t adv_status = packet[5]; 2619 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2620 if (adv_status == 0){ 2621 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2622 } 2623 hci_emit_event(event, sizeof(event), 1); 2624 } 2625 break; 2626 #endif 2627 #endif 2628 case HCI_OPCODE_HCI_READ_BD_ADDR: 2629 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2630 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)); 2631 #ifdef ENABLE_CLASSIC 2632 if (hci_stack->link_key_db){ 2633 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2634 } 2635 #endif 2636 break; 2637 #ifdef ENABLE_CLASSIC 2638 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2639 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2640 break; 2641 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2642 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2643 if (status == ERROR_CODE_SUCCESS) { 2644 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2645 } else { 2646 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2647 } 2648 break; 2649 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2650 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2651 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2652 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2653 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2654 hci_emit_event(event, sizeof(event), 1); 2655 } 2656 break; 2657 #endif 2658 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2659 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2660 2661 #ifdef ENABLE_CLASSIC 2662 // determine usable ACL packet types based on host buffer size and supported features 2663 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2664 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2665 #endif 2666 // Classic/LE 2667 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2668 break; 2669 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2670 manufacturer = little_endian_read_16(packet, 10); 2671 // map Cypress to Broadcom 2672 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2673 log_info("Treat Cypress as Broadcom"); 2674 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2675 little_endian_store_16(packet, 10, manufacturer); 2676 } 2677 hci_stack->manufacturer = manufacturer; 2678 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2679 break; 2680 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2681 hci_store_local_supported_commands(packet); 2682 break; 2683 #ifdef ENABLE_CLASSIC 2684 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2685 if (packet[5]) return; 2686 hci_stack->synchronous_flow_control_enabled = 1; 2687 break; 2688 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2689 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2690 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2691 conn = hci_connection_for_handle(handle); 2692 if (conn != NULL) { 2693 uint8_t key_size = 0; 2694 if (status == 0){ 2695 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2696 log_info("Handle %04x key Size: %u", handle, key_size); 2697 } else { 2698 key_size = 1; 2699 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2700 } 2701 hci_handle_read_encryption_key_size_complete(conn, key_size); 2702 } 2703 break; 2704 // assert pairing complete event is emitted. 2705 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2706 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2707 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2708 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2709 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2710 // lookup connection by gap pairing addr 2711 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2712 if (conn == NULL) break; 2713 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2714 break; 2715 2716 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2717 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2718 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2719 uint8_t event[67]; 2720 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2721 event[1] = 65; 2722 (void)memset(&event[2], 0, 65); 2723 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2724 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2725 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2726 event[2] = 3; 2727 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2728 } else { 2729 event[2] = 1; 2730 } 2731 } 2732 hci_emit_event(event, sizeof(event), 0); 2733 break; 2734 } 2735 2736 // note: only needed if user does not provide OOB data 2737 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2738 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2739 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2740 if (conn == NULL) break; 2741 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2742 break; 2743 #endif 2744 #endif 2745 #ifdef ENABLE_BLE 2746 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2747 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2748 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2749 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2750 if (status != ERROR_CODE_SUCCESS){ 2751 hci_iso_stream_requested_finalize(0xff); 2752 } 2753 break; 2754 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2755 // lookup BIG by state 2756 btstack_linked_list_iterator_t it; 2757 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2758 while (btstack_linked_list_iterator_has_next(&it)) { 2759 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2760 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2761 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2762 if (status == ERROR_CODE_SUCCESS){ 2763 big->state_vars.next_bis++; 2764 if (big->state_vars.next_bis == big->num_bis){ 2765 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2766 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2767 } else { 2768 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2769 } 2770 } else { 2771 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2772 big->state_vars.status = status; 2773 } 2774 return; 2775 } 2776 } 2777 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2778 while (btstack_linked_list_iterator_has_next(&it)) { 2779 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2780 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2781 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2782 if (status == ERROR_CODE_SUCCESS){ 2783 big_sync->state_vars.next_bis++; 2784 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2785 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2786 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2787 } else { 2788 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2789 } 2790 } else { 2791 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2792 big_sync->state_vars.status = status; 2793 } 2794 return; 2795 } 2796 } 2797 break; 2798 } 2799 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 2800 // lookup BIG by state 2801 btstack_linked_list_iterator_t it; 2802 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2803 while (btstack_linked_list_iterator_has_next(&it)) { 2804 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2805 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED){ 2806 btstack_linked_list_iterator_remove(&it); 2807 switch (big_sync->state){ 2808 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 2809 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 2810 break; 2811 default: 2812 hci_emit_big_sync_stopped(big_sync); 2813 break; 2814 } 2815 return; 2816 } 2817 } 2818 break; 2819 } 2820 #endif 2821 #endif 2822 default: 2823 break; 2824 } 2825 } 2826 2827 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 2828 UNUSED(size); 2829 2830 // get num cmd packets - limit to 1 to reduce complexity 2831 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 2832 2833 // get opcode and command status 2834 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 2835 2836 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 2837 uint8_t status = hci_event_command_status_get_status(packet); 2838 #endif 2839 2840 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2841 bd_addr_type_t addr_type; 2842 #endif 2843 2844 switch (opcode){ 2845 #ifdef ENABLE_CLASSIC 2846 case HCI_OPCODE_HCI_CREATE_CONNECTION: 2847 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 2848 #endif 2849 #ifdef ENABLE_LE_CENTRAL 2850 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 2851 #endif 2852 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2853 addr_type = hci_stack->outgoing_addr_type; 2854 2855 // reset outgoing address info 2856 memset(hci_stack->outgoing_addr, 0, 6); 2857 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 2858 2859 // on error 2860 if (status != ERROR_CODE_SUCCESS){ 2861 #ifdef ENABLE_LE_CENTRAL 2862 if (hci_is_le_connection_type(addr_type)){ 2863 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2864 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2865 } 2866 #endif 2867 // error => outgoing connection failed 2868 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 2869 if (conn != NULL){ 2870 hci_handle_connection_failed(conn, status); 2871 } 2872 } 2873 break; 2874 #endif 2875 #ifdef ENABLE_CLASSIC 2876 case HCI_OPCODE_HCI_INQUIRY: 2877 if (status == ERROR_CODE_SUCCESS) { 2878 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 2879 } else { 2880 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2881 } 2882 break; 2883 #endif 2884 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2885 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2886 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2887 if (status == ERROR_CODE_SUCCESS){ 2888 hci_iso_stream_requested_confirm(0xff); 2889 } else { 2890 hci_iso_stream_requested_finalize(0xff); 2891 } 2892 break; 2893 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 2894 default: 2895 break; 2896 } 2897 } 2898 2899 #ifdef ENABLE_BLE 2900 static void event_handle_le_connection_complete(const uint8_t * packet){ 2901 bd_addr_t addr; 2902 bd_addr_type_t addr_type; 2903 hci_connection_t * conn; 2904 2905 // Connection management 2906 reverse_bd_addr(&packet[8], addr); 2907 addr_type = (bd_addr_type_t)packet[7]; 2908 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 2909 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 2910 2911 #ifdef ENABLE_LE_CENTRAL 2912 // handle error: error is reported only to the initiator -> outgoing connection 2913 if (packet[3]){ 2914 2915 // handle cancelled outgoing connection 2916 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 2917 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 2918 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 2919 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 2920 // reset state 2921 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2922 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2923 // get outgoing connection conn struct for direct connect 2924 conn = gap_get_outgoing_connection(); 2925 } 2926 2927 // outgoing le connection establishment is done 2928 if (conn){ 2929 // remove entry 2930 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2931 btstack_memory_hci_connection_free( conn ); 2932 } 2933 return; 2934 } 2935 #endif 2936 2937 // on success, both hosts receive connection complete event 2938 if (packet[6] == HCI_ROLE_MASTER){ 2939 #ifdef ENABLE_LE_CENTRAL 2940 // if we're master on an le connection, it was an outgoing connection and we're done with it 2941 // note: no hci_connection_t object exists yet for connect with whitelist 2942 if (hci_is_le_connection_type(addr_type)){ 2943 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2944 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2945 } 2946 #endif 2947 } else { 2948 #ifdef ENABLE_LE_PERIPHERAL 2949 // if we're slave, it was an incoming connection, advertisements have stopped 2950 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 2951 #endif 2952 } 2953 2954 // LE connections are auto-accepted, so just create a connection if there isn't one already 2955 if (!conn){ 2956 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 2957 } 2958 2959 // no memory, sorry. 2960 if (!conn){ 2961 return; 2962 } 2963 2964 conn->state = OPEN; 2965 conn->role = packet[6]; 2966 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 2967 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 2968 2969 #ifdef ENABLE_LE_PERIPHERAL 2970 if (packet[6] == HCI_ROLE_SLAVE){ 2971 hci_update_advertisements_enabled_for_current_roles(); 2972 } 2973 #endif 2974 2975 // init unenhanced att bearer mtu 2976 conn->att_connection.mtu = ATT_DEFAULT_MTU; 2977 conn->att_connection.mtu_exchanged = false; 2978 2979 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 2980 2981 // restart timer 2982 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 2983 // btstack_run_loop_add_timer(&conn->timeout); 2984 2985 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 2986 2987 hci_emit_nr_connections_changed(); 2988 } 2989 #endif 2990 2991 #ifdef ENABLE_CLASSIC 2992 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){ 2993 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 2994 // LEVEL_4 is tested by l2cap 2995 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 2996 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 2997 if (level >= LEVEL_3){ 2998 // MITM not possible without keyboard or display 2999 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3000 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3001 3002 // MITM possible if one side has keyboard and the other has keyboard or display 3003 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3004 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3005 3006 // MITM not possible if one side has only display and other side has no keyboard 3007 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3008 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3009 } 3010 // LEVEL 2 requires SSP, which is a given 3011 return true; 3012 } 3013 3014 static bool btstack_is_null(uint8_t * data, uint16_t size){ 3015 uint16_t i; 3016 for (i=0; i < size ; i++){ 3017 if (data[i] != 0) { 3018 return false; 3019 } 3020 } 3021 return true; 3022 } 3023 3024 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3025 // get requested security level 3026 gap_security_level_t requested_security_level = conn->requested_security_level; 3027 if (hci_stack->gap_secure_connections_only_mode){ 3028 requested_security_level = LEVEL_4; 3029 } 3030 3031 // assess security: LEVEL 4 requires SC 3032 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3033 if ((requested_security_level == LEVEL_4) && 3034 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3035 !hci_remote_sc_enabled(conn)){ 3036 log_info("Level 4 required, but SC not supported -> abort"); 3037 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3038 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3039 return; 3040 } 3041 3042 // assess security based on io capabilities 3043 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3044 // responder: fully validate io caps of both sides as well as OOB data 3045 bool security_possible = false; 3046 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3047 3048 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3049 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3050 // so we merge the OOB data availability 3051 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3052 if (conn->classic_oob_c_192 != NULL){ 3053 have_oob_data |= 1; 3054 } 3055 if (conn->classic_oob_c_256 != NULL){ 3056 have_oob_data |= 2; 3057 } 3058 // for up to Level 3, either P-192 as well as P-256 will do 3059 // 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 3060 // if remote does not SC, we should not receive P-256 data either 3061 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3062 security_possible = true; 3063 } 3064 // for Level 4, P-256 is needed 3065 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3066 security_possible = true; 3067 } 3068 #endif 3069 3070 if (security_possible == false){ 3071 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3072 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3073 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3074 return; 3075 } 3076 } else { 3077 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3078 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3079 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3080 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3081 log_info("Level 3+ required, but no input/output -> abort"); 3082 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3083 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3084 return; 3085 } 3086 #endif 3087 #endif 3088 } 3089 3090 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3091 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3092 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3093 } else { 3094 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3095 } 3096 #endif 3097 } 3098 3099 #endif 3100 3101 static void event_handler(uint8_t *packet, uint16_t size){ 3102 3103 uint16_t event_length = packet[1]; 3104 3105 // assert packet is complete 3106 if (size != (event_length + 2u)){ 3107 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3108 return; 3109 } 3110 3111 hci_con_handle_t handle; 3112 hci_connection_t * conn; 3113 int i; 3114 3115 #ifdef ENABLE_CLASSIC 3116 hci_link_type_t link_type; 3117 bd_addr_t addr; 3118 bd_addr_type_t addr_type; 3119 #endif 3120 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3121 hci_iso_stream_t * iso_stream; 3122 le_audio_big_t * big; 3123 le_audio_big_sync_t * big_sync; 3124 #endif 3125 3126 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3127 3128 switch (hci_event_packet_get_type(packet)) { 3129 3130 case HCI_EVENT_COMMAND_COMPLETE: 3131 handle_command_complete_event(packet, size); 3132 break; 3133 3134 case HCI_EVENT_COMMAND_STATUS: 3135 handle_command_status_event(packet, size); 3136 break; 3137 3138 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3139 if (size < 3) return; 3140 uint16_t num_handles = packet[2]; 3141 if (size != (3u + num_handles * 4u)) return; 3142 uint16_t offset = 3; 3143 for (i=0; i<num_handles;i++){ 3144 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3145 offset += 2u; 3146 uint16_t num_packets = little_endian_read_16(packet, offset); 3147 offset += 2u; 3148 3149 conn = hci_connection_for_handle(handle); 3150 if (conn != NULL) { 3151 3152 if (conn->num_packets_sent >= num_packets) { 3153 conn->num_packets_sent -= num_packets; 3154 } else { 3155 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3156 conn->num_packets_sent = 0; 3157 } 3158 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3159 } 3160 3161 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3162 if (conn == NULL){ 3163 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3164 if (iso_stream != NULL){ 3165 if (iso_stream->num_packets_sent >= num_packets) { 3166 iso_stream->num_packets_sent -= num_packets; 3167 } else { 3168 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3169 iso_stream->num_packets_sent = 0; 3170 } 3171 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3172 num_packets, handle, iso_stream->num_packets_sent); 3173 } 3174 hci_iso_notify_can_send_now(); 3175 } 3176 #endif 3177 3178 #ifdef ENABLE_CLASSIC 3179 // For SCO, we do the can_send_now_check here 3180 hci_notify_if_sco_can_send_now(); 3181 #endif 3182 } 3183 break; 3184 } 3185 3186 #ifdef ENABLE_CLASSIC 3187 case HCI_EVENT_FLUSH_OCCURRED: 3188 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3189 handle = hci_event_flush_occurred_get_handle(packet); 3190 conn = hci_connection_for_handle(handle); 3191 if (conn) { 3192 log_info("Flush occurred, disconnect 0x%04x", handle); 3193 conn->state = SEND_DISCONNECT; 3194 } 3195 break; 3196 3197 case HCI_EVENT_INQUIRY_COMPLETE: 3198 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3199 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3200 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3201 hci_emit_event(event, sizeof(event), 1); 3202 } 3203 break; 3204 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3205 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3206 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3207 } 3208 break; 3209 case HCI_EVENT_CONNECTION_REQUEST: 3210 reverse_bd_addr(&packet[2], addr); 3211 link_type = (hci_link_type_t) packet[11]; 3212 3213 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3214 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3215 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3216 bd_addr_copy(hci_stack->decline_addr, addr); 3217 break; 3218 } 3219 3220 if (hci_stack->gap_classic_accept_callback != NULL){ 3221 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3222 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3223 bd_addr_copy(hci_stack->decline_addr, addr); 3224 break; 3225 } 3226 } 3227 3228 // TODO: eval COD 8-10 3229 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3230 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3231 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3232 if (!conn) { 3233 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3234 } 3235 if (!conn) { 3236 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3237 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3238 bd_addr_copy(hci_stack->decline_addr, addr); 3239 hci_run(); 3240 // avoid event to higher layer 3241 return; 3242 } 3243 conn->role = HCI_ROLE_SLAVE; 3244 conn->state = RECEIVED_CONNECTION_REQUEST; 3245 // store info about eSCO 3246 if (link_type == HCI_LINK_TYPE_ESCO){ 3247 conn->remote_supported_features[0] |= 1; 3248 } 3249 hci_run(); 3250 break; 3251 3252 case HCI_EVENT_CONNECTION_COMPLETE: 3253 // Connection management 3254 reverse_bd_addr(&packet[5], addr); 3255 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3256 addr_type = BD_ADDR_TYPE_ACL; 3257 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3258 if (conn) { 3259 if (!packet[2]){ 3260 conn->state = OPEN; 3261 conn->con_handle = little_endian_read_16(packet, 3); 3262 3263 // trigger write supervision timeout if we're master 3264 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3265 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3266 } 3267 3268 // trigger write automatic flush timeout 3269 if (hci_stack->automatic_flush_timeout != 0){ 3270 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3271 } 3272 3273 // restart timer 3274 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3275 btstack_run_loop_add_timer(&conn->timeout); 3276 3277 // trigger remote features for dedicated bonding 3278 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3279 hci_trigger_remote_features_for_connection(conn); 3280 } 3281 3282 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3283 3284 hci_emit_nr_connections_changed(); 3285 } else { 3286 // connection failed 3287 hci_handle_connection_failed(conn, packet[2]); 3288 } 3289 } 3290 break; 3291 3292 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3293 reverse_bd_addr(&packet[5], addr); 3294 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3295 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3296 if (packet[2]){ 3297 // connection failed 3298 if (conn){ 3299 hci_handle_connection_failed(conn, packet[2]); 3300 } 3301 break; 3302 } 3303 if (!conn) { 3304 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3305 } 3306 if (!conn) { 3307 break; 3308 } 3309 conn->state = OPEN; 3310 conn->con_handle = little_endian_read_16(packet, 3); 3311 3312 #ifdef ENABLE_SCO_OVER_HCI 3313 // update SCO 3314 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3315 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3316 } 3317 // trigger can send now 3318 if (hci_have_usb_transport()){ 3319 hci_stack->sco_can_send_now = true; 3320 } 3321 #endif 3322 #ifdef HAVE_SCO_TRANSPORT 3323 // configure sco transport 3324 if (hci_stack->sco_transport != NULL){ 3325 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3326 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3327 } 3328 #endif 3329 break; 3330 3331 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3332 handle = little_endian_read_16(packet, 3); 3333 conn = hci_connection_for_handle(handle); 3334 if (!conn) break; 3335 if (!packet[2]){ 3336 const uint8_t * features = &packet[5]; 3337 hci_handle_remote_features_page_0(conn, features); 3338 3339 // read extended features if possible 3340 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3341 && ((conn->remote_supported_features[0] & 2) != 0)) { 3342 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3343 break; 3344 } 3345 } 3346 hci_handle_remote_features_received(conn); 3347 break; 3348 3349 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3350 handle = little_endian_read_16(packet, 3); 3351 conn = hci_connection_for_handle(handle); 3352 if (!conn) break; 3353 // status = ok, page = 1 3354 if (!packet[2]) { 3355 uint8_t page_number = packet[5]; 3356 uint8_t maximum_page_number = packet[6]; 3357 const uint8_t * features = &packet[7]; 3358 bool done = false; 3359 switch (page_number){ 3360 case 1: 3361 hci_handle_remote_features_page_1(conn, features); 3362 if (maximum_page_number >= 2){ 3363 // get Secure Connections (Controller) from Page 2 if available 3364 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3365 } else { 3366 // otherwise, assume SC (Controller) == SC (Host) 3367 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3368 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3369 } 3370 done = true; 3371 } 3372 break; 3373 case 2: 3374 hci_handle_remote_features_page_2(conn, features); 3375 done = true; 3376 break; 3377 default: 3378 break; 3379 } 3380 if (!done) break; 3381 } 3382 hci_handle_remote_features_received(conn); 3383 break; 3384 3385 case HCI_EVENT_LINK_KEY_REQUEST: 3386 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3387 hci_event_link_key_request_get_bd_addr(packet, addr); 3388 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3389 if (!conn) break; 3390 3391 // lookup link key in db if not cached 3392 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3393 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3394 } 3395 3396 // response sent by hci_run() 3397 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3398 #endif 3399 break; 3400 3401 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3402 hci_event_link_key_request_get_bd_addr(packet, addr); 3403 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3404 if (!conn) break; 3405 3406 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3407 3408 // CVE-2020-26555: ignore NULL link key 3409 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3410 if (btstack_is_null(&packet[8], 16)) break; 3411 3412 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3413 // Change Connection Encryption keeps link key type 3414 if (link_key_type != CHANGED_COMBINATION_KEY){ 3415 conn->link_key_type = link_key_type; 3416 } 3417 3418 // cache link key. link keys stored in little-endian format for legacy reasons 3419 memcpy(&conn->link_key, &packet[8], 16); 3420 3421 // only store link key: 3422 // - if bondable enabled 3423 if (hci_stack->bondable == false) break; 3424 // - if security level sufficient 3425 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3426 // - for SSP, also check if remote side requested bonding as well 3427 if (conn->link_key_type != COMBINATION_KEY){ 3428 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3429 if (!remote_bonding){ 3430 break; 3431 } 3432 } 3433 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3434 break; 3435 } 3436 3437 case HCI_EVENT_PIN_CODE_REQUEST: 3438 hci_event_pin_code_request_get_bd_addr(packet, addr); 3439 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3440 if (!conn) break; 3441 3442 hci_pairing_started(conn, false); 3443 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3444 if (!hci_stack->bondable ){ 3445 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3446 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3447 hci_run(); 3448 return; 3449 } 3450 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3451 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3452 log_info("Level 4 required, but SC not supported -> abort"); 3453 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3454 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3455 hci_run(); 3456 return; 3457 } 3458 break; 3459 3460 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3461 hci_event_io_capability_response_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_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3466 hci_pairing_started(conn, true); 3467 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3468 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3469 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3470 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3471 #endif 3472 break; 3473 3474 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3475 hci_event_io_capability_response_get_bd_addr(packet, addr); 3476 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3477 if (!conn) break; 3478 3479 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3480 hci_connection_timestamp(conn); 3481 hci_pairing_started(conn, true); 3482 break; 3483 3484 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3485 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3486 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3487 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3488 if (!conn) break; 3489 3490 hci_connection_timestamp(conn); 3491 3492 hci_pairing_started(conn, true); 3493 3494 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3495 break; 3496 #endif 3497 3498 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3499 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3500 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3501 if (!conn) break; 3502 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3503 if (hci_stack->ssp_auto_accept){ 3504 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3505 }; 3506 } else { 3507 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3508 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3509 // don't forward event to app 3510 hci_run(); 3511 return; 3512 } 3513 break; 3514 3515 case HCI_EVENT_USER_PASSKEY_REQUEST: 3516 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3517 if (hci_stack->ssp_auto_accept){ 3518 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3519 }; 3520 break; 3521 3522 case HCI_EVENT_MODE_CHANGE: 3523 handle = hci_event_mode_change_get_handle(packet); 3524 conn = hci_connection_for_handle(handle); 3525 if (!conn) break; 3526 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3527 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3528 break; 3529 #endif 3530 3531 case HCI_EVENT_ENCRYPTION_CHANGE: 3532 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3533 handle = hci_event_encryption_change_get_connection_handle(packet); 3534 conn = hci_connection_for_handle(handle); 3535 if (!conn) break; 3536 if (hci_event_encryption_change_get_status(packet) == 0u) { 3537 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3538 if (encryption_enabled){ 3539 if (hci_is_le_connection(conn)){ 3540 // For LE, we accept connection as encrypted 3541 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3542 } 3543 #ifdef ENABLE_CLASSIC 3544 else { 3545 3546 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3547 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3548 bool connected_uses_aes_ccm = encryption_enabled == 2; 3549 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3550 log_info("SC during pairing, but only E0 now -> abort"); 3551 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3552 break; 3553 } 3554 3555 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3556 if (connected_uses_aes_ccm){ 3557 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3558 } 3559 3560 #ifdef ENABLE_TESTING_SUPPORT 3561 // work around for issue with PTS dongle 3562 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3563 #endif 3564 // validate encryption key size 3565 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3566 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3567 // already got encryption key size 3568 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3569 } else { 3570 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3571 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3572 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3573 } else { 3574 // if not, pretend everything is perfect 3575 hci_handle_read_encryption_key_size_complete(conn, 16); 3576 } 3577 } 3578 } 3579 #endif 3580 } else { 3581 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3582 } 3583 } else { 3584 uint8_t status = hci_event_encryption_change_get_status(packet); 3585 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3586 conn->bonding_flags &= ~BONDING_DEDICATED; 3587 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3588 conn->bonding_status = status; 3589 } 3590 } 3591 3592 break; 3593 3594 #ifdef ENABLE_CLASSIC 3595 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3596 handle = hci_event_authentication_complete_get_connection_handle(packet); 3597 conn = hci_connection_for_handle(handle); 3598 if (!conn) break; 3599 3600 // clear authentication active flag 3601 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3602 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3603 3604 // authenticated only if auth status == 0 3605 if (hci_event_authentication_complete_get_status(packet) == 0){ 3606 // authenticated 3607 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3608 3609 // If not already encrypted, start encryption 3610 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3611 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3612 break; 3613 } 3614 } 3615 3616 // emit updated security level 3617 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3618 break; 3619 3620 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3621 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3622 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3623 if (!conn) break; 3624 3625 // treat successfully paired connection as authenticated 3626 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3627 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3628 } 3629 3630 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3631 break; 3632 #endif 3633 3634 // HCI_EVENT_DISCONNECTION_COMPLETE 3635 // has been split, to first notify stack before shutting connection down 3636 // see end of function, too. 3637 case HCI_EVENT_DISCONNECTION_COMPLETE: 3638 if (packet[2]) break; // status != 0 3639 handle = little_endian_read_16(packet, 3); 3640 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3641 if (hci_stack->acl_fragmentation_total_size > 0u) { 3642 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3643 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3644 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3645 hci_stack->acl_fragmentation_total_size = 0; 3646 hci_stack->acl_fragmentation_pos = 0; 3647 if (release_buffer){ 3648 hci_release_packet_buffer(); 3649 } 3650 } 3651 } 3652 3653 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3654 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3655 if (hci_stack->iso_fragmentation_total_size > 0u) { 3656 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3657 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3658 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3659 hci_stack->iso_fragmentation_total_size = 0; 3660 hci_stack->iso_fragmentation_pos = 0; 3661 if (release_buffer){ 3662 hci_release_packet_buffer(); 3663 } 3664 } 3665 } 3666 3667 // finalize iso stream if handle matches 3668 iso_stream = hci_iso_stream_for_con_handle(handle); 3669 if (iso_stream != NULL){ 3670 hci_iso_stream_finalize(iso_stream); 3671 break; 3672 } 3673 #endif 3674 3675 conn = hci_connection_for_handle(handle); 3676 if (!conn) break; 3677 #ifdef ENABLE_CLASSIC 3678 // pairing failed if it was ongoing 3679 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3680 #endif 3681 3682 // emit dedicatd bonding event 3683 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3684 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3685 } 3686 3687 // mark connection for shutdown, stop timers, reset state 3688 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3689 hci_connection_stop_timer(conn); 3690 hci_connection_init(conn); 3691 3692 #ifdef ENABLE_BLE 3693 #ifdef ENABLE_LE_PERIPHERAL 3694 // re-enable advertisements for le connections if active 3695 if (hci_is_le_connection(conn)){ 3696 hci_update_advertisements_enabled_for_current_roles(); 3697 } 3698 #endif 3699 #endif 3700 break; 3701 3702 case HCI_EVENT_HARDWARE_ERROR: 3703 log_error("Hardware Error: 0x%02x", packet[2]); 3704 if (hci_stack->hardware_error_callback){ 3705 (*hci_stack->hardware_error_callback)(packet[2]); 3706 } else { 3707 // if no special requests, just reboot stack 3708 hci_power_control_off(); 3709 hci_power_control_on(); 3710 } 3711 break; 3712 3713 #ifdef ENABLE_CLASSIC 3714 case HCI_EVENT_ROLE_CHANGE: 3715 if (packet[2]) break; // status != 0 3716 reverse_bd_addr(&packet[3], addr); 3717 addr_type = BD_ADDR_TYPE_ACL; 3718 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3719 if (!conn) break; 3720 conn->role = packet[9]; 3721 break; 3722 #endif 3723 3724 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3725 // release packet buffer only for asynchronous transport and if there are not further fragments 3726 if (hci_transport_synchronous()) { 3727 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3728 return; // instead of break: to avoid re-entering hci_run() 3729 } 3730 hci_stack->acl_fragmentation_tx_active = 0; 3731 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3732 hci_stack->iso_fragmentation_tx_active = 0; 3733 if (hci_stack->iso_fragmentation_total_size) break; 3734 #endif 3735 if (hci_stack->acl_fragmentation_total_size) break; 3736 hci_release_packet_buffer(); 3737 3738 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3739 hci_iso_notify_can_send_now(); 3740 #endif 3741 // L2CAP receives this event via the hci_emit_event below 3742 3743 #ifdef ENABLE_CLASSIC 3744 // For SCO, we do the can_send_now_check here 3745 hci_notify_if_sco_can_send_now(); 3746 #endif 3747 break; 3748 3749 #ifdef ENABLE_CLASSIC 3750 case HCI_EVENT_SCO_CAN_SEND_NOW: 3751 // For SCO, we do the can_send_now_check here 3752 hci_stack->sco_can_send_now = true; 3753 hci_notify_if_sco_can_send_now(); 3754 return; 3755 3756 // explode inquriy results for easier consumption 3757 case HCI_EVENT_INQUIRY_RESULT: 3758 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3759 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3760 gap_inquiry_explode(packet, size); 3761 break; 3762 #endif 3763 3764 #ifdef ENABLE_BLE 3765 case HCI_EVENT_LE_META: 3766 switch (packet[2]){ 3767 #ifdef ENABLE_LE_CENTRAL 3768 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3769 if (!hci_stack->le_scanning_enabled) break; 3770 le_handle_advertisement_report(packet, size); 3771 break; 3772 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3773 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3774 if (!hci_stack->le_scanning_enabled) break; 3775 le_handle_extended_advertisement_report(packet, size); 3776 break; 3777 #endif 3778 #endif 3779 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3780 event_handle_le_connection_complete(packet); 3781 break; 3782 3783 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 3784 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 3785 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 3786 conn = hci_connection_for_handle(handle); 3787 if (!conn) break; 3788 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 3789 break; 3790 3791 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 3792 // connection 3793 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 3794 conn = hci_connection_for_handle(handle); 3795 if (conn) { 3796 // read arguments 3797 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 3798 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 3799 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 3800 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 3801 3802 // validate against current connection parameter range 3803 le_connection_parameter_range_t existing_range; 3804 gap_get_connection_parameter_range(&existing_range); 3805 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 3806 if (update_parameter){ 3807 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 3808 conn->le_conn_interval_min = le_conn_interval_min; 3809 conn->le_conn_interval_max = le_conn_interval_max; 3810 conn->le_conn_latency = le_conn_latency; 3811 conn->le_supervision_timeout = le_supervision_timeout; 3812 } else { 3813 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 3814 } 3815 } 3816 break; 3817 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 3818 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 3819 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 3820 conn = hci_connection_for_handle(handle); 3821 if (conn) { 3822 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 3823 } 3824 break; 3825 #endif 3826 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3827 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 3828 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 3829 iso_stream = hci_iso_stream_for_con_handle(handle); 3830 if (iso_stream){ 3831 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 3832 if (status == ERROR_CODE_SUCCESS){ 3833 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 3834 } else { 3835 hci_iso_stream_finalize(iso_stream); 3836 } 3837 } 3838 break; 3839 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 3840 big = hci_big_for_handle(packet[4]); 3841 if (big != NULL){ 3842 uint8_t status = packet[3]; 3843 if (status == ERROR_CODE_SUCCESS){ 3844 // store bis_con_handles and trigger iso path setup 3845 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 3846 uint8_t i; 3847 for (i=0;i<num_bis;i++){ 3848 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 3849 big->bis_con_handles[i] = bis_handle; 3850 // assign bis handle 3851 btstack_linked_list_iterator_t it; 3852 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3853 while (btstack_linked_list_iterator_has_next(&it)){ 3854 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3855 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 3856 (iso_stream->big_handle == big->big_handle)){ 3857 iso_stream->con_handle = bis_handle; 3858 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 3859 } 3860 } 3861 } 3862 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3863 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3864 big->state_vars.next_bis = 0; 3865 } 3866 } else { 3867 // create BIG failed or has been stopped by us 3868 hci_iso_stream_requested_finalize(big->big_handle); 3869 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3870 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 3871 hci_emit_big_created(big, status); 3872 } else { 3873 hci_emit_big_terminated(big); 3874 } 3875 } 3876 } 3877 break; 3878 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 3879 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 3880 if (big != NULL){ 3881 // finalize associated ISO streams 3882 btstack_linked_list_iterator_t it; 3883 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3884 while (btstack_linked_list_iterator_has_next(&it)){ 3885 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3886 if (iso_stream->big_handle == big->big_handle){ 3887 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->big_handle, iso_stream->con_handle); 3888 btstack_linked_list_iterator_remove(&it); 3889 btstack_memory_hci_iso_stream_free(iso_stream); 3890 } 3891 } 3892 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3893 switch (big->state){ 3894 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3895 hci_emit_big_created(big, big->state_vars.status); 3896 break; 3897 default: 3898 hci_emit_big_terminated(big); 3899 break; 3900 } 3901 } 3902 break; 3903 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 3904 big_sync = hci_big_sync_for_handle(packet[4]); 3905 if (big_sync != NULL){ 3906 uint8_t status = packet[3]; 3907 if (status == ERROR_CODE_SUCCESS){ 3908 // store bis_con_handles and trigger iso path setup 3909 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 3910 uint8_t i; 3911 for (i=0;i<num_bis;i++){ 3912 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 3913 } 3914 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3915 // trigger iso path setup 3916 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3917 big_sync->state_vars.next_bis = 0; 3918 } 3919 } else { 3920 // create BIG Sync failed or has been stopped by us 3921 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3922 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3923 hci_emit_big_sync_created(big_sync, status); 3924 } else { 3925 hci_emit_big_sync_stopped(big_sync); 3926 } 3927 } 3928 } 3929 break; 3930 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 3931 big_sync = hci_big_sync_for_handle(packet[4]); 3932 if (big_sync != NULL){ 3933 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3934 hci_emit_big_sync_stopped(big_sync); 3935 } 3936 break; 3937 #endif 3938 default: 3939 break; 3940 } 3941 break; 3942 #endif 3943 case HCI_EVENT_VENDOR_SPECIFIC: 3944 // Vendor specific commands often create vendor specific event instead of num completed packets 3945 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 3946 switch (hci_stack->manufacturer){ 3947 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 3948 hci_stack->num_cmd_packets = 1; 3949 break; 3950 default: 3951 break; 3952 } 3953 break; 3954 default: 3955 break; 3956 } 3957 3958 handle_event_for_current_stack_state(packet, size); 3959 3960 // notify upper stack 3961 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 3962 3963 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 3964 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 3965 handle = little_endian_read_16(packet, 3); 3966 hci_connection_t * aConn = hci_connection_for_handle(handle); 3967 // discard connection if app did not trigger a reconnect in the event handler 3968 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 3969 hci_shutdown_connection(aConn); 3970 } 3971 } 3972 3973 // execute main loop 3974 hci_run(); 3975 } 3976 3977 #ifdef ENABLE_CLASSIC 3978 3979 #ifdef ENABLE_SCO_OVER_HCI 3980 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 3981 static void sco_schedule_tx(hci_connection_t * conn); 3982 3983 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 3984 log_debug("SCO TX Timeout"); 3985 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 3986 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3987 if (!conn) return; 3988 3989 // trigger send 3990 conn->sco_tx_ready = 1; 3991 // extra packet if CVSD but SCO buffer is too short 3992 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 3993 conn->sco_tx_ready++; 3994 } 3995 hci_notify_if_sco_can_send_now(); 3996 } 3997 3998 3999 #define SCO_TX_AFTER_RX_MS (6) 4000 4001 static void sco_schedule_tx(hci_connection_t * conn){ 4002 4003 uint32_t now = btstack_run_loop_get_time_ms(); 4004 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4005 int time_delta_ms = sco_tx_ms - now; 4006 4007 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4008 4009 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4010 btstack_run_loop_remove_timer(timer); 4011 btstack_run_loop_set_timer(timer, time_delta_ms); 4012 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4013 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4014 btstack_run_loop_add_timer(timer); 4015 } 4016 #endif 4017 4018 static void sco_handler(uint8_t * packet, uint16_t size){ 4019 // lookup connection struct 4020 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4021 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4022 if (!conn) return; 4023 4024 #ifdef ENABLE_SCO_OVER_HCI 4025 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4026 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4027 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4028 packet[2] = 0x3c; 4029 memmove(&packet[3], &packet[23], 63); 4030 size = 63; 4031 } 4032 } 4033 4034 if (hci_have_usb_transport()){ 4035 // Nothing to do 4036 } else { 4037 // 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); 4038 if (hci_stack->synchronous_flow_control_enabled == 0){ 4039 uint32_t now = btstack_run_loop_get_time_ms(); 4040 4041 if (!conn->sco_rx_valid){ 4042 // ignore first 10 packets 4043 conn->sco_rx_count++; 4044 // log_debug("sco rx count %u", conn->sco_rx_count); 4045 if (conn->sco_rx_count == 10) { 4046 // use first timestamp as is and pretent it just started 4047 conn->sco_rx_ms = now; 4048 conn->sco_rx_valid = 1; 4049 conn->sco_rx_count = 0; 4050 sco_schedule_tx(conn); 4051 } 4052 } else { 4053 // track expected arrival timme 4054 conn->sco_rx_count++; 4055 conn->sco_rx_ms += 7; 4056 int delta = (int32_t) (now - conn->sco_rx_ms); 4057 if (delta > 0){ 4058 conn->sco_rx_ms++; 4059 } 4060 // log_debug("sco rx %u", conn->sco_rx_ms); 4061 sco_schedule_tx(conn); 4062 } 4063 } 4064 } 4065 #endif 4066 4067 // deliver to app 4068 if (hci_stack->sco_packet_handler) { 4069 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4070 } 4071 4072 #ifdef HAVE_SCO_TRANSPORT 4073 // We can send one packet for each received packet 4074 conn->sco_tx_ready++; 4075 hci_notify_if_sco_can_send_now(); 4076 #endif 4077 4078 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4079 conn->num_packets_completed++; 4080 hci_stack->host_completed_packets = 1; 4081 hci_run(); 4082 #endif 4083 } 4084 #endif 4085 4086 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4087 hci_dump_packet(packet_type, 1, packet, size); 4088 switch (packet_type) { 4089 case HCI_EVENT_PACKET: 4090 event_handler(packet, size); 4091 break; 4092 case HCI_ACL_DATA_PACKET: 4093 acl_handler(packet, size); 4094 break; 4095 #ifdef ENABLE_CLASSIC 4096 case HCI_SCO_DATA_PACKET: 4097 sco_handler(packet, size); 4098 break; 4099 #endif 4100 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4101 case HCI_ISO_DATA_PACKET: 4102 hci_iso_packet_handler(packet, size); 4103 break; 4104 #endif 4105 default: 4106 break; 4107 } 4108 } 4109 4110 /** 4111 * @brief Add event packet handler. 4112 */ 4113 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4114 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4115 } 4116 4117 /** 4118 * @brief Remove event packet handler. 4119 */ 4120 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4121 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4122 } 4123 4124 /** Register HCI packet handlers */ 4125 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4126 hci_stack->acl_packet_handler = handler; 4127 } 4128 4129 #ifdef ENABLE_CLASSIC 4130 /** 4131 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4132 */ 4133 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4134 hci_stack->sco_packet_handler = handler; 4135 } 4136 #endif 4137 4138 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4139 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4140 hci_stack->iso_packet_handler = handler; 4141 } 4142 #endif 4143 4144 static void hci_state_reset(void){ 4145 // no connections yet 4146 hci_stack->connections = NULL; 4147 4148 // keep discoverable/connectable as this has been requested by the client(s) 4149 // hci_stack->discoverable = 0; 4150 // hci_stack->connectable = 0; 4151 // hci_stack->bondable = 1; 4152 // hci_stack->own_addr_type = 0; 4153 4154 // buffer is free 4155 hci_stack->hci_packet_buffer_reserved = false; 4156 4157 // no pending cmds 4158 hci_stack->decline_reason = 0; 4159 4160 hci_stack->secure_connections_active = false; 4161 4162 #ifdef ENABLE_CLASSIC 4163 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4164 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4165 4166 hci_stack->gap_tasks_classic = 4167 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4168 GAP_TASK_SET_CLASS_OF_DEVICE | 4169 GAP_TASK_SET_LOCAL_NAME | 4170 GAP_TASK_SET_EIR_DATA | 4171 GAP_TASK_WRITE_SCAN_ENABLE | 4172 GAP_TASK_WRITE_PAGE_TIMEOUT; 4173 #endif 4174 4175 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4176 hci_stack->classic_read_local_oob_data = false; 4177 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4178 #endif 4179 4180 // LE 4181 #ifdef ENABLE_BLE 4182 memset(hci_stack->le_random_address, 0, 6); 4183 hci_stack->le_random_address_set = 0; 4184 #endif 4185 #ifdef ENABLE_LE_CENTRAL 4186 hci_stack->le_scanning_active = false; 4187 hci_stack->le_scanning_param_update = true; 4188 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4189 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4190 hci_stack->le_whitelist_capacity = 0; 4191 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4192 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4193 #endif 4194 #endif 4195 #ifdef ENABLE_LE_PERIPHERAL 4196 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4197 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4198 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4199 } 4200 if (hci_stack->le_advertisements_data != NULL){ 4201 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4202 } 4203 #endif 4204 } 4205 4206 #ifdef ENABLE_CLASSIC 4207 /** 4208 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4209 */ 4210 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4211 // store and open remote device db 4212 hci_stack->link_key_db = link_key_db; 4213 if (hci_stack->link_key_db) { 4214 hci_stack->link_key_db->open(); 4215 } 4216 } 4217 #endif 4218 4219 void hci_init(const hci_transport_t *transport, const void *config){ 4220 4221 #ifdef HAVE_MALLOC 4222 if (!hci_stack) { 4223 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4224 } 4225 #else 4226 hci_stack = &hci_stack_static; 4227 #endif 4228 memset(hci_stack, 0, sizeof(hci_stack_t)); 4229 4230 // reference to use transport layer implementation 4231 hci_stack->hci_transport = transport; 4232 4233 // reference to used config 4234 hci_stack->config = config; 4235 4236 // setup pointer for outgoing packet buffer 4237 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4238 4239 // max acl payload size defined in config.h 4240 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4241 4242 // register packet handlers with transport 4243 transport->register_packet_handler(&packet_handler); 4244 4245 hci_stack->state = HCI_STATE_OFF; 4246 4247 // class of device 4248 hci_stack->class_of_device = 0x007a020c; // Smartphone 4249 4250 // bondable by default 4251 hci_stack->bondable = 1; 4252 4253 #ifdef ENABLE_CLASSIC 4254 // classic name 4255 hci_stack->local_name = default_classic_name; 4256 4257 // Master slave policy 4258 hci_stack->master_slave_policy = 1; 4259 4260 // Allow Role Switch 4261 hci_stack->allow_role_switch = 1; 4262 4263 // Default / minimum security level = 2 4264 hci_stack->gap_security_level = LEVEL_2; 4265 4266 // Default Security Mode 4 4267 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4268 4269 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4270 hci_stack->gap_required_encyrption_key_size = 7; 4271 4272 // Link Supervision Timeout 4273 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4274 4275 #endif 4276 4277 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4278 hci_stack->ssp_enable = 1; 4279 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4280 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4281 hci_stack->ssp_auto_accept = 1; 4282 4283 // Secure Connections: enable (requires support from Controller) 4284 hci_stack->secure_connections_enable = true; 4285 4286 // voice setting - signed 16 bit pcm data with CVSD over the air 4287 hci_stack->sco_voice_setting = 0x60; 4288 4289 #ifdef ENABLE_LE_CENTRAL 4290 // connection parameter to use for outgoing connections 4291 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4292 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4293 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4294 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4295 hci_stack->le_connection_latency = 4; // 4 4296 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4297 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4298 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4299 4300 // default LE Scanning 4301 hci_stack->le_scan_type = 0x1; // active 4302 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4303 hci_stack->le_scan_window = 0x30; // 30 ms 4304 #endif 4305 4306 #ifdef ENABLE_LE_PERIPHERAL 4307 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4308 #endif 4309 4310 // connection parameter range used to answer connection parameter update requests in l2cap 4311 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4312 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4313 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4314 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4315 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4316 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4317 4318 hci_state_reset(); 4319 } 4320 4321 void hci_deinit(void){ 4322 btstack_run_loop_remove_timer(&hci_stack->timeout); 4323 #ifdef HAVE_MALLOC 4324 if (hci_stack) { 4325 free(hci_stack); 4326 } 4327 #endif 4328 hci_stack = NULL; 4329 4330 #ifdef ENABLE_CLASSIC 4331 disable_l2cap_timeouts = 0; 4332 #endif 4333 } 4334 4335 /** 4336 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4337 */ 4338 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4339 hci_stack->chipset = chipset_driver; 4340 4341 // reset chipset driver - init is also called on power_up 4342 if (hci_stack->chipset && hci_stack->chipset->init){ 4343 hci_stack->chipset->init(hci_stack->config); 4344 } 4345 } 4346 4347 /** 4348 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4349 */ 4350 void hci_set_control(const btstack_control_t *hardware_control){ 4351 // references to used control implementation 4352 hci_stack->control = hardware_control; 4353 // init with transport config 4354 hardware_control->init(hci_stack->config); 4355 } 4356 4357 static void hci_discard_connections(void){ 4358 btstack_linked_list_iterator_t it; 4359 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4360 while (btstack_linked_list_iterator_has_next(&it)){ 4361 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4362 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4363 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4364 hci_shutdown_connection(connection); 4365 } 4366 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4367 while (hci_stack->iso_streams != NULL){ 4368 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4369 } 4370 #endif 4371 } 4372 4373 void hci_close(void){ 4374 4375 #ifdef ENABLE_CLASSIC 4376 // close remote device db 4377 if (hci_stack->link_key_db) { 4378 hci_stack->link_key_db->close(); 4379 } 4380 #endif 4381 4382 hci_discard_connections(); 4383 4384 hci_power_control(HCI_POWER_OFF); 4385 4386 #ifdef HAVE_MALLOC 4387 free(hci_stack); 4388 #endif 4389 hci_stack = NULL; 4390 } 4391 4392 #ifdef HAVE_SCO_TRANSPORT 4393 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4394 hci_stack->sco_transport = sco_transport; 4395 sco_transport->register_packet_handler(&packet_handler); 4396 } 4397 #endif 4398 4399 #ifdef ENABLE_CLASSIC 4400 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4401 // validate ranage and set 4402 if (encryption_key_size < 7) return; 4403 if (encryption_key_size > 16) return; 4404 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4405 } 4406 4407 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4408 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4409 hci_stack->gap_security_mode = security_mode; 4410 return ERROR_CODE_SUCCESS; 4411 } else { 4412 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4413 } 4414 } 4415 4416 gap_security_mode_t gap_get_security_mode(void){ 4417 return hci_stack->gap_security_mode; 4418 } 4419 4420 void gap_set_security_level(gap_security_level_t security_level){ 4421 hci_stack->gap_security_level = security_level; 4422 } 4423 4424 gap_security_level_t gap_get_security_level(void){ 4425 if (hci_stack->gap_secure_connections_only_mode){ 4426 return LEVEL_4; 4427 } 4428 return hci_stack->gap_security_level; 4429 } 4430 4431 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4432 hci_stack->gap_minimal_service_security_level = security_level; 4433 } 4434 4435 void gap_set_secure_connections_only_mode(bool enable){ 4436 hci_stack->gap_secure_connections_only_mode = enable; 4437 } 4438 4439 bool gap_get_secure_connections_only_mode(void){ 4440 return hci_stack->gap_secure_connections_only_mode; 4441 } 4442 #endif 4443 4444 #ifdef ENABLE_CLASSIC 4445 void gap_set_class_of_device(uint32_t class_of_device){ 4446 hci_stack->class_of_device = class_of_device; 4447 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4448 hci_run(); 4449 } 4450 4451 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4452 hci_stack->default_link_policy_settings = default_link_policy_settings; 4453 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4454 hci_run(); 4455 } 4456 4457 void gap_set_allow_role_switch(bool allow_role_switch){ 4458 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4459 } 4460 4461 uint8_t hci_get_allow_role_switch(void){ 4462 return hci_stack->allow_role_switch; 4463 } 4464 4465 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4466 hci_stack->link_supervision_timeout = link_supervision_timeout; 4467 } 4468 4469 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4470 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4471 } 4472 4473 uint16_t hci_automatic_flush_timeout(void){ 4474 return hci_stack->automatic_flush_timeout; 4475 } 4476 4477 void hci_disable_l2cap_timeout_check(void){ 4478 disable_l2cap_timeouts = 1; 4479 } 4480 #endif 4481 4482 #ifndef HAVE_HOST_CONTROLLER_API 4483 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4484 void hci_set_bd_addr(bd_addr_t addr){ 4485 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4486 hci_stack->custom_bd_addr_set = 1; 4487 } 4488 #endif 4489 4490 // State-Module-Driver overview 4491 // state module low-level 4492 // HCI_STATE_OFF off close 4493 // HCI_STATE_INITIALIZING, on open 4494 // HCI_STATE_WORKING, on open 4495 // HCI_STATE_HALTING, on open 4496 // HCI_STATE_SLEEPING, off/sleep close 4497 // HCI_STATE_FALLING_ASLEEP on open 4498 4499 static int hci_power_control_on(void){ 4500 4501 // power on 4502 int err = 0; 4503 if (hci_stack->control && hci_stack->control->on){ 4504 err = (*hci_stack->control->on)(); 4505 } 4506 if (err){ 4507 log_error( "POWER_ON failed"); 4508 hci_emit_hci_open_failed(); 4509 return err; 4510 } 4511 4512 // int chipset driver 4513 if (hci_stack->chipset && hci_stack->chipset->init){ 4514 hci_stack->chipset->init(hci_stack->config); 4515 } 4516 4517 // init transport 4518 if (hci_stack->hci_transport->init){ 4519 hci_stack->hci_transport->init(hci_stack->config); 4520 } 4521 4522 // open transport 4523 err = hci_stack->hci_transport->open(); 4524 if (err){ 4525 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4526 if (hci_stack->control && hci_stack->control->off){ 4527 (*hci_stack->control->off)(); 4528 } 4529 hci_emit_hci_open_failed(); 4530 return err; 4531 } 4532 return 0; 4533 } 4534 4535 static void hci_power_control_off(void){ 4536 4537 log_info("hci_power_control_off"); 4538 4539 // close low-level device 4540 hci_stack->hci_transport->close(); 4541 4542 log_info("hci_power_control_off - hci_transport closed"); 4543 4544 // power off 4545 if (hci_stack->control && hci_stack->control->off){ 4546 (*hci_stack->control->off)(); 4547 } 4548 4549 log_info("hci_power_control_off - control closed"); 4550 4551 hci_stack->state = HCI_STATE_OFF; 4552 } 4553 4554 static void hci_power_control_sleep(void){ 4555 4556 log_info("hci_power_control_sleep"); 4557 4558 #if 0 4559 // don't close serial port during sleep 4560 4561 // close low-level device 4562 hci_stack->hci_transport->close(hci_stack->config); 4563 #endif 4564 4565 // sleep mode 4566 if (hci_stack->control && hci_stack->control->sleep){ 4567 (*hci_stack->control->sleep)(); 4568 } 4569 4570 hci_stack->state = HCI_STATE_SLEEPING; 4571 } 4572 4573 static int hci_power_control_wake(void){ 4574 4575 log_info("hci_power_control_wake"); 4576 4577 // wake on 4578 if (hci_stack->control && hci_stack->control->wake){ 4579 (*hci_stack->control->wake)(); 4580 } 4581 4582 #if 0 4583 // open low-level device 4584 int err = hci_stack->hci_transport->open(hci_stack->config); 4585 if (err){ 4586 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4587 if (hci_stack->control && hci_stack->control->off){ 4588 (*hci_stack->control->off)(); 4589 } 4590 hci_emit_hci_open_failed(); 4591 return err; 4592 } 4593 #endif 4594 4595 return 0; 4596 } 4597 4598 static void hci_power_enter_initializing_state(void){ 4599 // set up state machine 4600 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4601 hci_stack->hci_packet_buffer_reserved = false; 4602 hci_stack->state = HCI_STATE_INITIALIZING; 4603 hci_stack->substate = HCI_INIT_SEND_RESET; 4604 } 4605 4606 static void hci_power_enter_halting_state(void){ 4607 #ifdef ENABLE_BLE 4608 hci_whitelist_free(); 4609 #endif 4610 // see hci_run 4611 hci_stack->state = HCI_STATE_HALTING; 4612 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4613 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4614 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4615 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4616 btstack_run_loop_add_timer(&hci_stack->timeout); 4617 } 4618 4619 // returns error 4620 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4621 int err; 4622 switch (power_mode){ 4623 case HCI_POWER_ON: 4624 err = hci_power_control_on(); 4625 if (err != 0) { 4626 log_error("hci_power_control_on() error %d", err); 4627 return err; 4628 } 4629 hci_power_enter_initializing_state(); 4630 break; 4631 case HCI_POWER_OFF: 4632 // do nothing 4633 break; 4634 case HCI_POWER_SLEEP: 4635 // do nothing (with SLEEP == OFF) 4636 break; 4637 default: 4638 btstack_assert(false); 4639 break; 4640 } 4641 return ERROR_CODE_SUCCESS; 4642 } 4643 4644 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4645 switch (power_mode){ 4646 case HCI_POWER_ON: 4647 // do nothing 4648 break; 4649 case HCI_POWER_OFF: 4650 // no connections yet, just turn it off 4651 hci_power_control_off(); 4652 break; 4653 case HCI_POWER_SLEEP: 4654 // no connections yet, just turn it off 4655 hci_power_control_sleep(); 4656 break; 4657 default: 4658 btstack_assert(false); 4659 break; 4660 } 4661 return ERROR_CODE_SUCCESS; 4662 } 4663 4664 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4665 switch (power_mode){ 4666 case HCI_POWER_ON: 4667 // do nothing 4668 break; 4669 case HCI_POWER_OFF: 4670 hci_power_enter_halting_state(); 4671 break; 4672 case HCI_POWER_SLEEP: 4673 // see hci_run 4674 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4675 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4676 break; 4677 default: 4678 btstack_assert(false); 4679 break; 4680 } 4681 return ERROR_CODE_SUCCESS; 4682 } 4683 4684 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4685 switch (power_mode){ 4686 case HCI_POWER_ON: 4687 hci_power_enter_initializing_state(); 4688 break; 4689 case HCI_POWER_OFF: 4690 // do nothing 4691 break; 4692 case HCI_POWER_SLEEP: 4693 // see hci_run 4694 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4695 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4696 break; 4697 default: 4698 btstack_assert(false); 4699 break; 4700 } 4701 return ERROR_CODE_SUCCESS; 4702 } 4703 4704 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4705 switch (power_mode){ 4706 case HCI_POWER_ON: 4707 hci_power_enter_initializing_state(); 4708 break; 4709 case HCI_POWER_OFF: 4710 hci_power_enter_halting_state(); 4711 break; 4712 case HCI_POWER_SLEEP: 4713 // do nothing 4714 break; 4715 default: 4716 btstack_assert(false); 4717 break; 4718 } 4719 return ERROR_CODE_SUCCESS; 4720 } 4721 4722 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 4723 int err; 4724 switch (power_mode){ 4725 case HCI_POWER_ON: 4726 err = hci_power_control_wake(); 4727 if (err) return err; 4728 hci_power_enter_initializing_state(); 4729 break; 4730 case HCI_POWER_OFF: 4731 hci_power_enter_halting_state(); 4732 break; 4733 case HCI_POWER_SLEEP: 4734 // do nothing 4735 break; 4736 default: 4737 btstack_assert(false); 4738 break; 4739 } 4740 return ERROR_CODE_SUCCESS; 4741 } 4742 4743 int hci_power_control(HCI_POWER_MODE power_mode){ 4744 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 4745 int err = 0; 4746 switch (hci_stack->state){ 4747 case HCI_STATE_OFF: 4748 err = hci_power_control_state_off(power_mode); 4749 break; 4750 case HCI_STATE_INITIALIZING: 4751 err = hci_power_control_state_initializing(power_mode); 4752 break; 4753 case HCI_STATE_WORKING: 4754 err = hci_power_control_state_working(power_mode); 4755 break; 4756 case HCI_STATE_HALTING: 4757 err = hci_power_control_state_halting(power_mode); 4758 break; 4759 case HCI_STATE_FALLING_ASLEEP: 4760 err = hci_power_control_state_falling_asleep(power_mode); 4761 break; 4762 case HCI_STATE_SLEEPING: 4763 err = hci_power_control_state_sleeping(power_mode); 4764 break; 4765 default: 4766 btstack_assert(false); 4767 break; 4768 } 4769 if (err != 0){ 4770 return err; 4771 } 4772 4773 // create internal event 4774 hci_emit_state(); 4775 4776 // trigger next/first action 4777 hci_run(); 4778 4779 return 0; 4780 } 4781 4782 4783 static void hci_halting_run(void) { 4784 4785 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4786 4787 hci_connection_t *connection; 4788 #ifdef ENABLE_BLE 4789 #ifdef ENABLE_LE_PERIPHERAL 4790 bool stop_advertismenets; 4791 #endif 4792 #endif 4793 4794 switch (hci_stack->substate) { 4795 case HCI_HALTING_CLASSIC_STOP: 4796 #ifdef ENABLE_CLASSIC 4797 if (!hci_can_send_command_packet_now()) return; 4798 4799 if (hci_stack->connectable || hci_stack->discoverable){ 4800 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4801 hci_send_cmd(&hci_write_scan_enable, 0); 4802 return; 4803 } 4804 #endif 4805 /* fall through */ 4806 4807 case HCI_HALTING_LE_ADV_STOP: 4808 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4809 4810 #ifdef ENABLE_BLE 4811 #ifdef ENABLE_LE_PERIPHERAL 4812 if (!hci_can_send_command_packet_now()) return; 4813 4814 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 4815 4816 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4817 if (hci_extended_advertising_supported()){ 4818 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4819 btstack_linked_list_iterator_t it; 4820 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4821 // stop all periodic advertisements and check if an extended set is active 4822 while (btstack_linked_list_iterator_has_next(&it)){ 4823 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 4824 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 4825 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 4826 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 4827 return; 4828 } 4829 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 4830 stop_advertismenets = true; 4831 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4832 } 4833 } 4834 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 4835 if (stop_advertismenets){ 4836 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4837 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 4838 return; 4839 } 4840 } 4841 else 4842 #else 4843 { 4844 if (stop_advertismenets) { 4845 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4846 hci_send_cmd(&hci_le_set_advertise_enable, 0); 4847 return; 4848 } 4849 } 4850 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 4851 #endif /* ENABLE_LE_PERIPHERAL */ 4852 #endif /* ENABLE_BLE */ 4853 4854 /* fall through */ 4855 4856 case HCI_HALTING_LE_SCAN_STOP: 4857 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 4858 if (!hci_can_send_command_packet_now()) return; 4859 4860 #ifdef ENABLE_BLE 4861 #ifdef ENABLE_LE_CENTRAL 4862 if (hci_stack->le_scanning_active){ 4863 hci_le_scan_stop(); 4864 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4865 return; 4866 } 4867 #endif 4868 #endif 4869 4870 /* fall through */ 4871 4872 case HCI_HALTING_DISCONNECT_ALL: 4873 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4874 if (!hci_can_send_command_packet_now()) return; 4875 4876 // close all open connections 4877 connection = (hci_connection_t *) hci_stack->connections; 4878 if (connection) { 4879 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 4880 4881 // check state 4882 if (connection->state == SENT_DISCONNECT) return; 4883 connection->state = SENT_DISCONNECT; 4884 4885 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 4886 4887 // finally, send the disconnect command 4888 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4889 return; 4890 } 4891 4892 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4893 // stop BIGs and BIG Syncs 4894 if (hci_stack->le_audio_bigs != NULL){ 4895 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 4896 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 4897 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 4898 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 4899 return; 4900 } 4901 if (hci_stack->le_audio_big_syncs != NULL){ 4902 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 4903 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 4904 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 4905 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 4906 return; 4907 } 4908 #endif 4909 4910 btstack_run_loop_remove_timer(&hci_stack->timeout); 4911 4912 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 4913 log_info("HCI_STATE_HALTING: wait 50 ms"); 4914 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 4915 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 4916 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4917 btstack_run_loop_add_timer(&hci_stack->timeout); 4918 break; 4919 4920 case HCI_HALTING_CLOSE: 4921 // close left over connections (that had not been properly closed before) 4922 hci_discard_connections(); 4923 4924 log_info("HCI_STATE_HALTING, calling off"); 4925 4926 // switch mode 4927 hci_power_control_off(); 4928 4929 log_info("HCI_STATE_HALTING, emitting state"); 4930 hci_emit_state(); 4931 log_info("HCI_STATE_HALTING, done"); 4932 break; 4933 4934 case HCI_HALTING_W4_CLOSE_TIMER: 4935 // keep waiting 4936 4937 break; 4938 default: 4939 break; 4940 } 4941 }; 4942 4943 static void hci_falling_asleep_run(void){ 4944 hci_connection_t * connection; 4945 switch(hci_stack->substate) { 4946 case HCI_FALLING_ASLEEP_DISCONNECT: 4947 log_info("HCI_STATE_FALLING_ASLEEP"); 4948 // close all open connections 4949 connection = (hci_connection_t *) hci_stack->connections; 4950 if (connection){ 4951 4952 // send disconnect 4953 if (!hci_can_send_command_packet_now()) return; 4954 4955 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 4956 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4957 4958 // send disconnected event right away - causes higher layer connections to get closed, too. 4959 hci_shutdown_connection(connection); 4960 return; 4961 } 4962 4963 if (hci_classic_supported()){ 4964 // disable page and inquiry scan 4965 if (!hci_can_send_command_packet_now()) return; 4966 4967 log_info("HCI_STATE_HALTING, disabling inq scans"); 4968 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 4969 4970 // continue in next sub state 4971 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 4972 break; 4973 } 4974 4975 /* fall through */ 4976 4977 case HCI_FALLING_ASLEEP_COMPLETE: 4978 log_info("HCI_STATE_HALTING, calling sleep"); 4979 // switch mode 4980 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 4981 hci_emit_state(); 4982 break; 4983 4984 default: 4985 break; 4986 } 4987 } 4988 4989 #ifdef ENABLE_CLASSIC 4990 4991 static void hci_update_scan_enable(void){ 4992 // 2 = page scan, 1 = inq scan 4993 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 4994 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 4995 hci_run(); 4996 } 4997 4998 void gap_discoverable_control(uint8_t enable){ 4999 if (enable) enable = 1; // normalize argument 5000 5001 if (hci_stack->discoverable == enable){ 5002 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5003 return; 5004 } 5005 5006 hci_stack->discoverable = enable; 5007 hci_update_scan_enable(); 5008 } 5009 5010 void gap_connectable_control(uint8_t enable){ 5011 if (enable) enable = 1; // normalize argument 5012 5013 // don't emit event 5014 if (hci_stack->connectable == enable) return; 5015 5016 hci_stack->connectable = enable; 5017 hci_update_scan_enable(); 5018 } 5019 #endif 5020 5021 void gap_local_bd_addr(bd_addr_t address_buffer){ 5022 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5023 } 5024 5025 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5026 static void hci_host_num_completed_packets(void){ 5027 5028 // create packet manually as arrays are not supported and num_commands should not get reduced 5029 hci_reserve_packet_buffer(); 5030 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5031 5032 uint16_t size = 0; 5033 uint16_t num_handles = 0; 5034 packet[size++] = 0x35; 5035 packet[size++] = 0x0c; 5036 size++; // skip param len 5037 size++; // skip num handles 5038 5039 // add { handle, packets } entries 5040 btstack_linked_item_t * it; 5041 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5042 hci_connection_t * connection = (hci_connection_t *) it; 5043 if (connection->num_packets_completed){ 5044 little_endian_store_16(packet, size, connection->con_handle); 5045 size += 2; 5046 little_endian_store_16(packet, size, connection->num_packets_completed); 5047 size += 2; 5048 // 5049 num_handles++; 5050 connection->num_packets_completed = 0; 5051 } 5052 } 5053 5054 packet[2] = size - 3; 5055 packet[3] = num_handles; 5056 5057 hci_stack->host_completed_packets = 0; 5058 5059 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5060 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5061 5062 // release packet buffer for synchronous transport implementations 5063 if (hci_transport_synchronous()){ 5064 hci_release_packet_buffer(); 5065 hci_emit_transport_packet_sent(); 5066 } 5067 } 5068 #endif 5069 5070 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5071 UNUSED(ds); 5072 hci_stack->substate = HCI_HALTING_CLOSE; 5073 // allow packet handlers to defer final shutdown 5074 hci_emit_state(); 5075 hci_run(); 5076 } 5077 5078 static bool hci_run_acl_fragments(void){ 5079 if (hci_stack->acl_fragmentation_total_size > 0u) { 5080 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5081 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5082 if (connection) { 5083 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5084 hci_send_acl_packet_fragments(connection); 5085 return true; 5086 } 5087 } else { 5088 // connection gone -> discard further fragments 5089 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5090 hci_stack->acl_fragmentation_total_size = 0; 5091 hci_stack->acl_fragmentation_pos = 0; 5092 } 5093 } 5094 return false; 5095 } 5096 5097 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5098 static bool hci_run_iso_fragments(void){ 5099 if (hci_stack->iso_fragmentation_total_size > 0u) { 5100 // TODO: flow control 5101 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5102 hci_send_iso_packet_fragments(); 5103 return true; 5104 } 5105 } 5106 return false; 5107 } 5108 #endif 5109 5110 #ifdef ENABLE_CLASSIC 5111 5112 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5113 static bool hci_classic_operation_active(void) { 5114 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5115 return true; 5116 } 5117 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5118 return true; 5119 } 5120 btstack_linked_item_t * it; 5121 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5122 hci_connection_t *connection = (hci_connection_t *) it; 5123 switch (connection->state) { 5124 case SENT_CREATE_CONNECTION: 5125 case SENT_CANCEL_CONNECTION: 5126 case SENT_DISCONNECT: 5127 return true; 5128 default: 5129 break; 5130 } 5131 } 5132 return false; 5133 } 5134 #endif 5135 5136 static bool hci_run_general_gap_classic(void){ 5137 5138 // assert stack is working and classic is active 5139 if (hci_classic_supported() == false) return false; 5140 if (hci_stack->state != HCI_STATE_WORKING) return false; 5141 5142 // decline incoming connections 5143 if (hci_stack->decline_reason){ 5144 uint8_t reason = hci_stack->decline_reason; 5145 hci_stack->decline_reason = 0; 5146 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5147 return true; 5148 } 5149 5150 if (hci_stack->gap_tasks_classic != 0){ 5151 hci_run_gap_tasks_classic(); 5152 return true; 5153 } 5154 5155 // start/stop inquiry 5156 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5157 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5158 if (hci_classic_operation_active() == false) 5159 #endif 5160 { 5161 uint8_t duration = hci_stack->inquiry_state; 5162 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5163 if (hci_stack->inquiry_max_period_length != 0){ 5164 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); 5165 } else { 5166 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5167 } 5168 return true; 5169 } 5170 } 5171 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5172 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5173 hci_send_cmd(&hci_inquiry_cancel); 5174 return true; 5175 } 5176 5177 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5178 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5179 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5180 return true; 5181 } 5182 5183 // remote name request 5184 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5185 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5186 if (hci_classic_operation_active() == false) 5187 #endif 5188 { 5189 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5190 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5191 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5192 return true; 5193 } 5194 } 5195 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5196 // Local OOB data 5197 if (hci_stack->classic_read_local_oob_data){ 5198 hci_stack->classic_read_local_oob_data = false; 5199 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5200 hci_send_cmd(&hci_read_local_extended_oob_data); 5201 } else { 5202 hci_send_cmd(&hci_read_local_oob_data); 5203 } 5204 } 5205 #endif 5206 // pairing 5207 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5208 uint8_t state = hci_stack->gap_pairing_state; 5209 uint8_t pin_code[16]; 5210 switch (state){ 5211 case GAP_PAIRING_STATE_SEND_PIN: 5212 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5213 memset(pin_code, 0, 16); 5214 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5215 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5216 break; 5217 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5218 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5219 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5220 break; 5221 case GAP_PAIRING_STATE_SEND_PASSKEY: 5222 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5223 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5224 break; 5225 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5226 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5227 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5228 break; 5229 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5230 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5231 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5232 break; 5233 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5234 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5235 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5236 break; 5237 default: 5238 break; 5239 } 5240 return true; 5241 } 5242 return false; 5243 } 5244 #endif 5245 5246 #ifdef ENABLE_BLE 5247 5248 #ifdef ENABLE_LE_CENTRAL 5249 static void hci_le_scan_stop(void){ 5250 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5251 if (hci_extended_advertising_supported()) { 5252 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5253 } else 5254 #endif 5255 { 5256 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5257 } 5258 } 5259 #endif 5260 5261 #ifdef ENABLE_LE_PERIPHERAL 5262 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5263 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5264 uint8_t operation = 0; 5265 if (pos == 0){ 5266 // first fragment or complete data 5267 operation |= 1; 5268 } 5269 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5270 // last fragment or complete data 5271 operation |= 2; 5272 } 5273 return operation; 5274 } 5275 #endif 5276 #endif 5277 5278 static bool hci_run_general_gap_le(void){ 5279 5280 btstack_linked_list_iterator_t lit; 5281 5282 // Phase 1: collect what to stop 5283 5284 #ifdef ENABLE_LE_CENTRAL 5285 bool scanning_stop = false; 5286 bool connecting_stop = false; 5287 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5288 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5289 bool periodic_sync_stop = false; 5290 #endif 5291 #endif 5292 #endif 5293 5294 #ifdef ENABLE_LE_PERIPHERAL 5295 bool advertising_stop = false; 5296 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5297 le_advertising_set_t * advertising_stop_set = NULL; 5298 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5299 bool periodic_advertising_stop = false; 5300 #endif 5301 #endif 5302 #endif 5303 5304 // check if own address changes 5305 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5306 5307 // check if whitelist needs modification 5308 bool whitelist_modification_pending = false; 5309 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5310 while (btstack_linked_list_iterator_has_next(&lit)){ 5311 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5312 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5313 whitelist_modification_pending = true; 5314 break; 5315 } 5316 } 5317 5318 // check if resolving list needs modification 5319 bool resolving_list_modification_pending = false; 5320 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5321 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5322 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5323 resolving_list_modification_pending = true; 5324 } 5325 #endif 5326 5327 #ifdef ENABLE_LE_CENTRAL 5328 5329 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5330 // check if periodic advertiser list needs modification 5331 bool periodic_list_modification_pending = false; 5332 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5333 while (btstack_linked_list_iterator_has_next(&lit)){ 5334 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5335 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5336 periodic_list_modification_pending = true; 5337 break; 5338 } 5339 } 5340 #endif 5341 5342 // scanning control 5343 if (hci_stack->le_scanning_active) { 5344 // stop if: 5345 // - parameter change required 5346 // - it's disabled 5347 // - whitelist change required but used for scanning 5348 // - resolving list modified 5349 // - own address changes 5350 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5351 if ((hci_stack->le_scanning_param_update) || 5352 !hci_stack->le_scanning_enabled || 5353 (scanning_uses_whitelist && whitelist_modification_pending) || 5354 resolving_list_modification_pending || 5355 random_address_change){ 5356 5357 scanning_stop = true; 5358 } 5359 } 5360 5361 // connecting control 5362 bool connecting_with_whitelist; 5363 switch (hci_stack->le_connecting_state){ 5364 case LE_CONNECTING_DIRECT: 5365 case LE_CONNECTING_WHITELIST: 5366 // stop connecting if: 5367 // - connecting uses white and whitelist modification pending 5368 // - if it got disabled 5369 // - resolving list modified 5370 // - own address changes 5371 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5372 if ((connecting_with_whitelist && whitelist_modification_pending) || 5373 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5374 resolving_list_modification_pending || 5375 random_address_change) { 5376 5377 connecting_stop = true; 5378 } 5379 break; 5380 default: 5381 break; 5382 } 5383 5384 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5385 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5386 // periodic sync control 5387 bool sync_with_advertiser_list; 5388 switch(hci_stack->le_periodic_sync_state){ 5389 case LE_CONNECTING_DIRECT: 5390 case LE_CONNECTING_WHITELIST: 5391 // stop sync if: 5392 // - sync with advertiser list and advertiser list modification pending 5393 // - if it got disabled 5394 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5395 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5396 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5397 periodic_sync_stop = true; 5398 } 5399 break; 5400 default: 5401 break; 5402 } 5403 #endif 5404 #endif 5405 5406 #endif /* ENABLE_LE_CENTRAL */ 5407 5408 #ifdef ENABLE_LE_PERIPHERAL 5409 // le advertisement control 5410 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5411 // stop if: 5412 // - parameter change required 5413 // - random address used in 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 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5419 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5420 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5421 if (advertising_change || 5422 (advertising_uses_random_address && random_address_change) || 5423 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5424 (advertising_uses_whitelist && whitelist_modification_pending) || 5425 resolving_list_modification_pending || 5426 random_address_change) { 5427 5428 advertising_stop = true; 5429 } 5430 } 5431 5432 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5433 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5434 btstack_linked_list_iterator_t it; 5435 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5436 while (btstack_linked_list_iterator_has_next(&it)){ 5437 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5438 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5439 // stop if: 5440 // - parameter change required 5441 // - random address used in connectable advertising and changes 5442 // - it's disabled 5443 // - whitelist change required but used for advertisement filter policy 5444 // - resolving list modified 5445 // - own address changes 5446 // - advertisement set will be removed 5447 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5448 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5449 bool advertising_uses_random_address = 5450 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5451 advertising_connectable; 5452 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5453 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5454 bool advertising_set_random_address_change = 5455 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5456 bool advertising_set_will_be_removed = 5457 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5458 if (advertising_parameter_change || 5459 (advertising_uses_random_address && advertising_set_random_address_change) || 5460 (advertising_enabled == false) || 5461 (advertising_uses_whitelist && whitelist_modification_pending) || 5462 resolving_list_modification_pending || 5463 advertising_set_will_be_removed) { 5464 5465 advertising_stop = true; 5466 advertising_stop_set = advertising_set; 5467 break; 5468 } 5469 } 5470 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5471 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5472 // stop if: 5473 // - it's disabled 5474 // - parameter change required 5475 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5476 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5477 if ((periodic_enabled == false) || periodic_parameter_change){ 5478 periodic_advertising_stop = true; 5479 advertising_stop_set = advertising_set; 5480 } 5481 } 5482 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5483 } 5484 } 5485 #endif 5486 5487 #endif 5488 5489 5490 // Phase 2: stop everything that should be off during modifications 5491 5492 5493 // 2.1 Outgoing connection 5494 #ifdef ENABLE_LE_CENTRAL 5495 if (connecting_stop){ 5496 hci_send_cmd(&hci_le_create_connection_cancel); 5497 return true; 5498 } 5499 #endif 5500 5501 // 2.2 Scanning 5502 #ifdef ENABLE_LE_CENTRAL 5503 if (scanning_stop){ 5504 hci_stack->le_scanning_active = false; 5505 hci_le_scan_stop(); 5506 return true; 5507 } 5508 5509 // 2.3 Periodic Sync 5510 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5511 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5512 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5513 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5514 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5515 return true; 5516 } 5517 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5518 if (periodic_sync_stop){ 5519 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5520 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5521 return true; 5522 } 5523 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5524 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5525 #endif /* ENABLE_LE_CENTRAL */ 5526 5527 // 2.4 Advertising: legacy, extended, periodic 5528 #ifdef ENABLE_LE_PERIPHERAL 5529 if (advertising_stop){ 5530 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5531 if (hci_extended_advertising_supported()) { 5532 uint8_t advertising_stop_handle; 5533 if (advertising_stop_set != NULL){ 5534 advertising_stop_handle = advertising_stop_set->advertising_handle; 5535 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5536 } else { 5537 advertising_stop_handle = 0; 5538 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5539 } 5540 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5541 const uint16_t durations[] = { 0 }; 5542 const uint16_t max_events[] = { 0 }; 5543 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5544 } else 5545 #endif 5546 { 5547 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5548 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5549 } 5550 return true; 5551 } 5552 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5553 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5554 if (periodic_advertising_stop){ 5555 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5556 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5557 return true; 5558 } 5559 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5560 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5561 #endif /* ENABLE_LE_PERIPHERAL */ 5562 5563 5564 // Phase 3: modify 5565 5566 if (random_address_change){ 5567 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5568 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5569 if (hci_extended_advertising_supported()) { 5570 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5571 } 5572 #endif 5573 { 5574 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5575 } 5576 return true; 5577 } 5578 5579 #ifdef ENABLE_LE_CENTRAL 5580 if (hci_stack->le_scanning_param_update){ 5581 hci_stack->le_scanning_param_update = false; 5582 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5583 if (hci_extended_advertising_supported()){ 5584 // prepare arrays for all PHYs 5585 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5586 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5587 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5588 uint8_t scanning_phys = 1; // LE 1M PHY 5589 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5590 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5591 } else 5592 #endif 5593 { 5594 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5595 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5596 } 5597 return true; 5598 } 5599 #endif 5600 5601 #ifdef ENABLE_LE_PERIPHERAL 5602 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5603 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5604 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5605 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5606 if (hci_extended_advertising_supported()){ 5607 // map advertisment type to advertising event properties 5608 uint16_t adv_event_properties = 0; 5609 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5610 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5611 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5612 } 5613 hci_stack->le_advertising_set_in_current_command = 0; 5614 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5615 0, 5616 adv_event_properties, 5617 hci_stack->le_advertisements_interval_min, 5618 hci_stack->le_advertisements_interval_max, 5619 hci_stack->le_advertisements_channel_map, 5620 hci_stack->le_advertisements_own_addr_type, 5621 hci_stack->le_advertisements_direct_address_type, 5622 hci_stack->le_advertisements_direct_address, 5623 hci_stack->le_advertisements_filter_policy, 5624 0x7f, // tx power: no preference 5625 0x01, // primary adv phy: LE 1M 5626 0, // secondary adv max skip 5627 0, // secondary adv phy 5628 0, // adv sid 5629 0 // scan request notification 5630 ); 5631 } 5632 #endif 5633 { 5634 hci_send_cmd(&hci_le_set_advertising_parameters, 5635 hci_stack->le_advertisements_interval_min, 5636 hci_stack->le_advertisements_interval_max, 5637 hci_stack->le_advertisements_type, 5638 hci_stack->le_advertisements_own_addr_type, 5639 hci_stack->le_advertisements_direct_address_type, 5640 hci_stack->le_advertisements_direct_address, 5641 hci_stack->le_advertisements_channel_map, 5642 hci_stack->le_advertisements_filter_policy); 5643 } 5644 return true; 5645 } 5646 5647 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5648 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5649 uint8_t adv_data_clean[31]; 5650 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5651 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5652 hci_stack->le_advertisements_data_len); 5653 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5654 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5655 if (hci_extended_advertising_supported()){ 5656 hci_stack->le_advertising_set_in_current_command = 0; 5657 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5658 } else 5659 #endif 5660 { 5661 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5662 } 5663 return true; 5664 } 5665 5666 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5667 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5668 uint8_t scan_data_clean[31]; 5669 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5670 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5671 hci_stack->le_scan_response_data_len); 5672 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5673 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5674 if (hci_extended_advertising_supported()){ 5675 hci_stack->le_advertising_set_in_current_command = 0; 5676 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5677 } else 5678 #endif 5679 { 5680 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5681 } 5682 return true; 5683 } 5684 5685 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5686 if (hci_extended_advertising_supported()) { 5687 btstack_linked_list_iterator_t it; 5688 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5689 while (btstack_linked_list_iterator_has_next(&it)){ 5690 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5691 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5692 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5693 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5694 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5695 return true; 5696 } 5697 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5698 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5699 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5700 return true; 5701 } 5702 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5703 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5704 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5705 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5706 advertising_set->advertising_handle, 5707 advertising_set->extended_params.advertising_event_properties, 5708 advertising_set->extended_params.primary_advertising_interval_min, 5709 advertising_set->extended_params.primary_advertising_interval_max, 5710 advertising_set->extended_params.primary_advertising_channel_map, 5711 advertising_set->extended_params.own_address_type, 5712 advertising_set->extended_params.peer_address_type, 5713 advertising_set->extended_params.peer_address, 5714 advertising_set->extended_params.advertising_filter_policy, 5715 advertising_set->extended_params.advertising_tx_power, 5716 advertising_set->extended_params.primary_advertising_phy, 5717 advertising_set->extended_params.secondary_advertising_max_skip, 5718 advertising_set->extended_params.secondary_advertising_phy, 5719 advertising_set->extended_params.advertising_sid, 5720 advertising_set->extended_params.scan_request_notification_enable 5721 ); 5722 return true; 5723 } 5724 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 5725 uint16_t pos = advertising_set->adv_data_pos; 5726 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 5727 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5728 if ((operation & 0x02) != 0){ 5729 // last fragment or complete data 5730 operation |= 2; 5731 advertising_set->adv_data_pos = 0; 5732 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5733 } else { 5734 advertising_set->adv_data_pos += data_to_upload; 5735 } 5736 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5737 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 5738 return true; 5739 } 5740 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 5741 uint16_t pos = advertising_set->scan_data_pos; 5742 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 5743 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5744 if ((operation & 0x02) != 0){ 5745 advertising_set->scan_data_pos = 0; 5746 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5747 } else { 5748 advertising_set->scan_data_pos += data_to_upload; 5749 } 5750 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5751 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 5752 return true; 5753 } 5754 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5755 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 5756 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 5757 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5758 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 5759 advertising_set->advertising_handle, 5760 advertising_set->periodic_params.periodic_advertising_interval_min, 5761 advertising_set->periodic_params.periodic_advertising_interval_max, 5762 advertising_set->periodic_params.periodic_advertising_properties); 5763 return true; 5764 } 5765 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 5766 uint16_t pos = advertising_set->periodic_data_pos; 5767 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 5768 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5769 if ((operation & 0x02) != 0){ 5770 // last fragment or complete data 5771 operation |= 2; 5772 advertising_set->periodic_data_pos = 0; 5773 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 5774 } else { 5775 advertising_set->periodic_data_pos += data_to_upload; 5776 } 5777 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5778 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 5779 return true; 5780 } 5781 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5782 } 5783 } 5784 #endif 5785 5786 #endif 5787 5788 #ifdef ENABLE_LE_CENTRAL 5789 // if connect with whitelist was active and is not cancelled yet, wait until next time 5790 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 5791 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5792 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 5793 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 5794 #endif 5795 #endif 5796 5797 // LE Whitelist Management 5798 if (whitelist_modification_pending){ 5799 // add/remove entries 5800 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5801 while (btstack_linked_list_iterator_has_next(&lit)){ 5802 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5803 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5804 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5805 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 5806 return true; 5807 } 5808 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 5809 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 5810 entry->state |= LE_WHITELIST_ON_CONTROLLER; 5811 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 5812 return true; 5813 } 5814 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 5815 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 5816 btstack_memory_whitelist_entry_free(entry); 5817 } 5818 } 5819 } 5820 5821 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5822 // LE Resolving List Management 5823 if (resolving_list_supported) { 5824 uint16_t i; 5825 switch (hci_stack->le_resolving_list_state) { 5826 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 5827 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 5828 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 5829 return true; 5830 case LE_RESOLVING_LIST_READ_SIZE: 5831 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 5832 hci_send_cmd(&hci_le_read_resolving_list_size); 5833 return true; 5834 case LE_RESOLVING_LIST_SEND_CLEAR: 5835 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 5836 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 5837 sizeof(hci_stack->le_resolving_list_add_entries)); 5838 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 5839 sizeof(hci_stack->le_resolving_list_remove_entries)); 5840 hci_send_cmd(&hci_le_clear_resolving_list); 5841 return true; 5842 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 5843 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5844 uint8_t offset = i >> 3; 5845 uint8_t mask = 1 << (i & 7); 5846 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 5847 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 5848 bd_addr_t peer_identity_addreses; 5849 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5850 sm_key_t peer_irk; 5851 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5852 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5853 5854 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 5855 // trigger whitelist entry 'update' (work around for controller bug) 5856 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5857 while (btstack_linked_list_iterator_has_next(&lit)) { 5858 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 5859 if (entry->address_type != peer_identity_addr_type) continue; 5860 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 5861 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 5862 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 5863 } 5864 #endif 5865 5866 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 5867 peer_identity_addreses); 5868 return true; 5869 } 5870 5871 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 5872 5873 /* fall through */ 5874 5875 case LE_RESOLVING_LIST_ADD_ENTRIES: 5876 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5877 uint8_t offset = i >> 3; 5878 uint8_t mask = 1 << (i & 7); 5879 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 5880 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 5881 bd_addr_t peer_identity_addreses; 5882 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5883 sm_key_t peer_irk; 5884 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5885 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5886 const uint8_t *local_irk = gap_get_persistent_irk(); 5887 // command uses format specifier 'P' that stores 16-byte value without flip 5888 uint8_t local_irk_flipped[16]; 5889 uint8_t peer_irk_flipped[16]; 5890 reverse_128(local_irk, local_irk_flipped); 5891 reverse_128(peer_irk, peer_irk_flipped); 5892 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 5893 peer_irk_flipped, local_irk_flipped); 5894 return true; 5895 } 5896 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5897 break; 5898 5899 default: 5900 break; 5901 } 5902 } 5903 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5904 #endif 5905 5906 #ifdef ENABLE_LE_CENTRAL 5907 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5908 // LE Whitelist Management 5909 if (periodic_list_modification_pending){ 5910 // add/remove entries 5911 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5912 while (btstack_linked_list_iterator_has_next(&lit)){ 5913 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5914 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 5915 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5916 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 5917 return true; 5918 } 5919 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 5920 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5921 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 5922 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 5923 return true; 5924 } 5925 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 5926 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 5927 btstack_memory_periodic_advertiser_list_entry_free(entry); 5928 } 5929 } 5930 } 5931 #endif 5932 #endif 5933 5934 // post-pone all actions until stack is fully working 5935 if (hci_stack->state != HCI_STATE_WORKING) return false; 5936 5937 // advertisements, active scanning, and creating connections requires random address to be set if using private address 5938 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 5939 5940 // Phase 4: restore state 5941 5942 #ifdef ENABLE_LE_CENTRAL 5943 // re-start scanning 5944 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 5945 hci_stack->le_scanning_active = true; 5946 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5947 if (hci_extended_advertising_supported()){ 5948 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, 0, 0, 0); 5949 } else 5950 #endif 5951 { 5952 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 5953 } 5954 return true; 5955 } 5956 #endif 5957 5958 #ifdef ENABLE_LE_CENTRAL 5959 // re-start connecting 5960 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 5961 bd_addr_t null_addr; 5962 memset(null_addr, 0, 6); 5963 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 5964 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 5965 hci_send_cmd(&hci_le_create_connection, 5966 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 5967 hci_stack->le_connection_scan_window, // scan interval: 30 ms 5968 1, // use whitelist 5969 0, // peer address type 5970 null_addr, // peer bd addr 5971 hci_stack->le_connection_own_addr_type, // our addr type: 5972 hci_stack->le_connection_interval_min, // conn interval min 5973 hci_stack->le_connection_interval_max, // conn interval max 5974 hci_stack->le_connection_latency, // conn latency 5975 hci_stack->le_supervision_timeout, // conn latency 5976 hci_stack->le_minimum_ce_length, // min ce length 5977 hci_stack->le_maximum_ce_length // max ce length 5978 ); 5979 return true; 5980 } 5981 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5982 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 5983 switch(hci_stack->le_periodic_sync_request){ 5984 case LE_CONNECTING_DIRECT: 5985 case LE_CONNECTING_WHITELIST: 5986 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 5987 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 5988 hci_stack->le_periodic_sync_options, 5989 hci_stack->le_periodic_sync_advertising_sid, 5990 hci_stack->le_periodic_sync_advertiser_address_type, 5991 hci_stack->le_periodic_sync_advertiser_address, 5992 hci_stack->le_periodic_sync_skip, 5993 hci_stack->le_periodic_sync_timeout, 5994 hci_stack->le_periodic_sync_cte_type); 5995 return true; 5996 default: 5997 break; 5998 } 5999 } 6000 #endif 6001 #endif 6002 6003 #ifdef ENABLE_LE_PERIPHERAL 6004 // re-start advertising 6005 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6006 // check if advertisements should be enabled given 6007 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6008 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6009 6010 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6011 if (hci_extended_advertising_supported()){ 6012 const uint8_t advertising_handles[] = { 0 }; 6013 const uint16_t durations[] = { 0 }; 6014 const uint16_t max_events[] = { 0 }; 6015 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6016 } else 6017 #endif 6018 { 6019 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6020 } 6021 return true; 6022 } 6023 6024 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6025 if (hci_extended_advertising_supported()) { 6026 btstack_linked_list_iterator_t it; 6027 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6028 while (btstack_linked_list_iterator_has_next(&it)) { 6029 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6030 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6031 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6032 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6033 const uint16_t durations[] = { advertising_set->enable_timeout }; 6034 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6035 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6036 return true; 6037 } 6038 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6039 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6040 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6041 uint8_t enable = 1; 6042 if (advertising_set->periodic_include_adi){ 6043 enable |= 2; 6044 } 6045 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6046 return true; 6047 } 6048 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6049 } 6050 } 6051 #endif 6052 #endif 6053 6054 return false; 6055 } 6056 6057 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6058 static bool hci_run_iso_tasks(void){ 6059 btstack_linked_list_iterator_t it; 6060 6061 // BIG 6062 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6063 while (btstack_linked_list_iterator_has_next(&it)){ 6064 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6065 switch (big->state){ 6066 case LE_AUDIO_BIG_STATE_CREATE: 6067 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6068 hci_send_cmd(&hci_le_create_big, 6069 big->params->big_handle, 6070 big->params->advertising_handle, 6071 big->params->num_bis, 6072 big->params->sdu_interval_us, 6073 big->params->max_sdu, 6074 big->params->max_transport_latency_ms, 6075 big->params->rtn, 6076 big->params->phy, 6077 big->params->packing, 6078 big->params->framing, 6079 big->params->encryption, 6080 big->params->broadcast_code); 6081 return true; 6082 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6083 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6084 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); 6085 return true; 6086 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6087 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6088 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6089 break; 6090 case LE_AUDIO_BIG_STATE_TERMINATE: 6091 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6092 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6093 return true; 6094 default: 6095 break; 6096 } 6097 } 6098 6099 // BIG Sync 6100 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6101 while (btstack_linked_list_iterator_has_next(&it)){ 6102 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6103 switch (big_sync->state){ 6104 case LE_AUDIO_BIG_STATE_CREATE: 6105 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6106 hci_send_cmd(&hci_le_big_create_sync, 6107 big_sync->params->big_handle, 6108 big_sync->params->sync_handle, 6109 big_sync->params->encryption, 6110 big_sync->params->broadcast_code, 6111 big_sync->params->mse, 6112 big_sync->params->big_sync_timeout_10ms, 6113 big_sync->params->num_bis, 6114 big_sync->params->bis_indices); 6115 return true; 6116 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6117 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6118 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); 6119 return true; 6120 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6121 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6122 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6123 break; 6124 case LE_AUDIO_BIG_STATE_TERMINATE: 6125 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6126 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6127 return true; 6128 default: 6129 break; 6130 } 6131 } 6132 6133 return false; 6134 } 6135 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6136 #endif 6137 6138 static bool hci_run_general_pending_commands(void){ 6139 btstack_linked_item_t * it; 6140 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6141 hci_connection_t * connection = (hci_connection_t *) it; 6142 6143 switch(connection->state){ 6144 case SEND_CREATE_CONNECTION: 6145 switch(connection->address_type){ 6146 #ifdef ENABLE_CLASSIC 6147 case BD_ADDR_TYPE_ACL: 6148 log_info("sending hci_create_connection"); 6149 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6150 break; 6151 #endif 6152 default: 6153 #ifdef ENABLE_BLE 6154 #ifdef ENABLE_LE_CENTRAL 6155 log_info("sending hci_le_create_connection"); 6156 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6157 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6158 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6159 if (hci_extended_advertising_supported()) { 6160 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6161 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6162 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6163 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6164 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6165 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6166 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6167 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6168 hci_send_cmd(&hci_le_extended_create_connection, 6169 0, // don't use whitelist 6170 hci_stack->le_connection_own_addr_type, // our addr type: 6171 connection->address_type, // peer address type 6172 connection->address, // peer bd addr 6173 1, // initiating PHY - 1M 6174 le_connection_scan_interval, // conn scan interval 6175 le_connection_scan_window, // conn scan windows 6176 le_connection_interval_min, // conn interval min 6177 le_connection_interval_max, // conn interval max 6178 le_connection_latency, // conn latency 6179 le_supervision_timeout, // conn latency 6180 le_minimum_ce_length, // min ce length 6181 le_maximum_ce_length // max ce length 6182 ); } 6183 else 6184 #endif 6185 { 6186 hci_send_cmd(&hci_le_create_connection, 6187 hci_stack->le_connection_scan_interval, // conn scan interval 6188 hci_stack->le_connection_scan_window, // conn scan windows 6189 0, // don't use whitelist 6190 connection->address_type, // peer address type 6191 connection->address, // peer bd addr 6192 hci_stack->le_connection_own_addr_type, // our addr type: 6193 hci_stack->le_connection_interval_min, // conn interval min 6194 hci_stack->le_connection_interval_max, // conn interval max 6195 hci_stack->le_connection_latency, // conn latency 6196 hci_stack->le_supervision_timeout, // conn latency 6197 hci_stack->le_minimum_ce_length, // min ce length 6198 hci_stack->le_maximum_ce_length // max ce length 6199 ); 6200 } 6201 connection->state = SENT_CREATE_CONNECTION; 6202 #endif 6203 #endif 6204 break; 6205 } 6206 return true; 6207 6208 #ifdef ENABLE_CLASSIC 6209 case RECEIVED_CONNECTION_REQUEST: 6210 connection->role = HCI_ROLE_SLAVE; 6211 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6212 log_info("sending hci_accept_connection_request"); 6213 connection->state = ACCEPTED_CONNECTION_REQUEST; 6214 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6215 return true; 6216 } 6217 break; 6218 #endif 6219 6220 #ifdef ENABLE_BLE 6221 #ifdef ENABLE_LE_CENTRAL 6222 case SEND_CANCEL_CONNECTION: 6223 connection->state = SENT_CANCEL_CONNECTION; 6224 hci_send_cmd(&hci_le_create_connection_cancel); 6225 return true; 6226 #endif 6227 #endif 6228 case SEND_DISCONNECT: 6229 connection->state = SENT_DISCONNECT; 6230 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6231 return true; 6232 6233 default: 6234 break; 6235 } 6236 6237 // no further commands if connection is about to get shut down 6238 if (connection->state == SENT_DISCONNECT) continue; 6239 6240 #ifdef ENABLE_CLASSIC 6241 6242 // Handling link key request requires remote supported features 6243 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6244 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6245 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6246 6247 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6248 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6249 if (have_link_key && security_level_sufficient){ 6250 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6251 } else { 6252 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6253 } 6254 return true; 6255 } 6256 6257 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6258 log_info("denying to pin request"); 6259 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6260 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6261 return true; 6262 } 6263 6264 // security assessment requires remote features 6265 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6266 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6267 hci_ssp_assess_security_on_io_cap_request(connection); 6268 // 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 6269 } 6270 6271 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6272 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6273 // set authentication requirements: 6274 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6275 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6276 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6277 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6278 authreq |= 1; 6279 } 6280 bool bonding = hci_stack->bondable; 6281 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6282 // if we have received IO Cap Response, we're in responder role 6283 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6284 if (bonding && !remote_bonding){ 6285 log_info("Remote not bonding, dropping local flag"); 6286 bonding = false; 6287 } 6288 } 6289 if (bonding){ 6290 if (connection->bonding_flags & BONDING_DEDICATED){ 6291 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6292 } else { 6293 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6294 } 6295 } 6296 uint8_t have_oob_data = 0; 6297 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6298 if (connection->classic_oob_c_192 != NULL){ 6299 have_oob_data |= 1; 6300 } 6301 if (connection->classic_oob_c_256 != NULL){ 6302 have_oob_data |= 2; 6303 } 6304 #endif 6305 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6306 return true; 6307 } 6308 6309 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6310 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6311 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6312 return true; 6313 } 6314 6315 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6316 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6317 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6318 const uint8_t zero[16] = { 0 }; 6319 const uint8_t * r_192 = zero; 6320 const uint8_t * c_192 = zero; 6321 const uint8_t * r_256 = zero; 6322 const uint8_t * c_256 = zero; 6323 // verify P-256 OOB 6324 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6325 c_256 = connection->classic_oob_c_256; 6326 if (connection->classic_oob_r_256 != NULL) { 6327 r_256 = connection->classic_oob_r_256; 6328 } 6329 } 6330 // verify P-192 OOB 6331 if ((connection->classic_oob_c_192 != NULL)) { 6332 c_192 = connection->classic_oob_c_192; 6333 if (connection->classic_oob_r_192 != NULL) { 6334 r_192 = connection->classic_oob_r_192; 6335 } 6336 } 6337 6338 // assess security 6339 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6340 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6341 if (need_level_4 && !can_reach_level_4){ 6342 log_info("Level 4 required, but not possible -> abort"); 6343 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6344 // send oob negative reply 6345 c_256 = NULL; 6346 c_192 = NULL; 6347 } 6348 6349 // Reply 6350 if (c_256 != zero) { 6351 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6352 } else if (c_192 != zero){ 6353 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6354 } else { 6355 hci_stack->classic_oob_con_handle = connection->con_handle; 6356 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6357 } 6358 return true; 6359 } 6360 #endif 6361 6362 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6363 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6364 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6365 return true; 6366 } 6367 6368 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6369 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6370 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6371 return true; 6372 } 6373 6374 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6375 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6376 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6377 return true; 6378 } 6379 6380 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6381 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6382 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6383 connection->state = SENT_DISCONNECT; 6384 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6385 return true; 6386 } 6387 6388 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6389 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6390 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6391 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6392 return true; 6393 } 6394 6395 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6396 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6397 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6398 return true; 6399 } 6400 6401 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6402 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6403 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6404 return true; 6405 } 6406 6407 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6408 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6409 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6410 return true; 6411 } 6412 6413 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6414 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6415 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6416 return true; 6417 } 6418 6419 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6420 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6421 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6422 return true; 6423 } 6424 #endif 6425 6426 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6427 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6428 #ifdef ENABLE_CLASSIC 6429 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6430 #endif 6431 if (connection->state != SENT_DISCONNECT){ 6432 connection->state = SENT_DISCONNECT; 6433 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6434 return true; 6435 } 6436 } 6437 6438 #ifdef ENABLE_CLASSIC 6439 uint16_t sniff_min_interval; 6440 switch (connection->sniff_min_interval){ 6441 case 0: 6442 break; 6443 case 0xffff: 6444 connection->sniff_min_interval = 0; 6445 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6446 return true; 6447 default: 6448 sniff_min_interval = connection->sniff_min_interval; 6449 connection->sniff_min_interval = 0; 6450 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6451 return true; 6452 } 6453 6454 if (connection->sniff_subrating_max_latency != 0xffff){ 6455 uint16_t max_latency = connection->sniff_subrating_max_latency; 6456 connection->sniff_subrating_max_latency = 0; 6457 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6458 return true; 6459 } 6460 6461 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6462 uint8_t service_type = (uint8_t) connection->qos_service_type; 6463 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6464 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); 6465 return true; 6466 } 6467 6468 if (connection->request_role != HCI_ROLE_INVALID){ 6469 hci_role_t role = connection->request_role; 6470 connection->request_role = HCI_ROLE_INVALID; 6471 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6472 return true; 6473 } 6474 #endif 6475 6476 if (connection->gap_connection_tasks != 0){ 6477 #ifdef ENABLE_CLASSIC 6478 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6479 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6480 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6481 return true; 6482 } 6483 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6484 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6485 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6486 return true; 6487 } 6488 #endif 6489 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6490 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6491 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6492 return true; 6493 } 6494 } 6495 6496 #ifdef ENABLE_BLE 6497 switch (connection->le_con_parameter_update_state){ 6498 // response to L2CAP CON PARAMETER UPDATE REQUEST 6499 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6500 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6501 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6502 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6503 0x0000, 0xffff); 6504 return true; 6505 case CON_PARAMETER_UPDATE_REPLY: 6506 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6507 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6508 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6509 0x0000, 0xffff); 6510 return true; 6511 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6512 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6513 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6514 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6515 return true; 6516 default: 6517 break; 6518 } 6519 if (connection->le_phy_update_all_phys != 0xffu){ 6520 uint8_t all_phys = connection->le_phy_update_all_phys; 6521 connection->le_phy_update_all_phys = 0xff; 6522 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); 6523 return true; 6524 } 6525 #endif 6526 } 6527 return false; 6528 } 6529 6530 static void hci_run(void){ 6531 6532 // stack state sub statemachines 6533 switch (hci_stack->state) { 6534 case HCI_STATE_INITIALIZING: 6535 hci_initializing_run(); 6536 break; 6537 case HCI_STATE_HALTING: 6538 hci_halting_run(); 6539 break; 6540 case HCI_STATE_FALLING_ASLEEP: 6541 hci_falling_asleep_run(); 6542 break; 6543 default: 6544 break; 6545 } 6546 6547 // allow to run after initialization to working transition 6548 if (hci_stack->state != HCI_STATE_WORKING){ 6549 return; 6550 } 6551 6552 bool done; 6553 6554 // send continuation fragments first, as they block the prepared packet buffer 6555 done = hci_run_acl_fragments(); 6556 if (done) return; 6557 6558 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6559 done = hci_run_iso_fragments(); 6560 if (done) return; 6561 #endif 6562 6563 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6564 // send host num completed packets next as they don't require num_cmd_packets > 0 6565 if (!hci_can_send_comand_packet_transport()) return; 6566 if (hci_stack->host_completed_packets){ 6567 hci_host_num_completed_packets(); 6568 return; 6569 } 6570 #endif 6571 6572 if (!hci_can_send_command_packet_now()) return; 6573 6574 // global/non-connection oriented commands 6575 6576 6577 #ifdef ENABLE_CLASSIC 6578 // general gap classic 6579 done = hci_run_general_gap_classic(); 6580 if (done) return; 6581 #endif 6582 6583 #ifdef ENABLE_BLE 6584 // general gap le 6585 done = hci_run_general_gap_le(); 6586 if (done) return; 6587 6588 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6589 // ISO related tasks, e.g. BIG create/terminate/sync 6590 done = hci_run_iso_tasks(); 6591 if (done) return; 6592 #endif 6593 #endif 6594 6595 // send pending HCI commands 6596 hci_run_general_pending_commands(); 6597 } 6598 6599 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 6600 // house-keeping 6601 6602 #ifdef ENABLE_CLASSIC 6603 bd_addr_t addr; 6604 hci_connection_t * conn; 6605 #endif 6606 #ifdef ENABLE_LE_CENTRAL 6607 uint8_t initiator_filter_policy; 6608 #endif 6609 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6610 uint8_t i; 6611 uint8_t num_cis; 6612 hci_con_handle_t cis_handle; 6613 uint8_t status; 6614 #endif 6615 6616 uint16_t opcode = little_endian_read_16(packet, 0); 6617 switch (opcode) { 6618 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 6619 hci_stack->loopback_mode = packet[3]; 6620 break; 6621 6622 #ifdef ENABLE_CLASSIC 6623 case HCI_OPCODE_HCI_CREATE_CONNECTION: 6624 reverse_bd_addr(&packet[3], addr); 6625 log_info("Create_connection to %s", bd_addr_to_str(addr)); 6626 6627 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 6628 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 6629 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 6630 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 6631 } 6632 6633 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6634 if (!conn) { 6635 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6636 if (!conn) { 6637 // notify client that alloc failed 6638 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6639 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 6640 } 6641 conn->state = SEND_CREATE_CONNECTION; 6642 conn->role = HCI_ROLE_MASTER; 6643 } 6644 6645 log_info("conn state %u", conn->state); 6646 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 6647 switch (conn->state) { 6648 // if connection active exists 6649 case OPEN: 6650 // and OPEN, emit connection complete command 6651 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 6652 // packet not sent to controller 6653 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6654 case RECEIVED_DISCONNECTION_COMPLETE: 6655 // create connection triggered in disconnect complete event, let's do it now 6656 break; 6657 case SEND_CREATE_CONNECTION: 6658 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 6659 if (hci_classic_operation_active()){ 6660 return ERROR_CODE_SUCCESS; 6661 } 6662 #endif 6663 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 6664 break; 6665 default: 6666 // otherwise, just ignore as it is already in the open process 6667 // packet not sent to controller 6668 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6669 } 6670 conn->state = SENT_CREATE_CONNECTION; 6671 6672 // track outgoing connection 6673 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 6674 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 6675 break; 6676 6677 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 6678 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 6679 // setup_synchronous_connection? Voice setting at offset 22 6680 // TODO: compare to current setting if sco connection already active 6681 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 6682 break; 6683 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 6684 // accept_synchronous_connection? Voice setting at offset 18 6685 // TODO: compare to current setting if sco connection already active 6686 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 6687 // track outgoing connection 6688 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 6689 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 6690 break; 6691 #endif 6692 #endif 6693 6694 #ifdef ENABLE_BLE 6695 #ifdef ENABLE_LE_CENTRAL 6696 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 6697 // white list used? 6698 initiator_filter_policy = packet[7]; 6699 switch (initiator_filter_policy) { 6700 case 0: 6701 // whitelist not used 6702 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 6703 break; 6704 case 1: 6705 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 6706 break; 6707 default: 6708 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 6709 break; 6710 } 6711 // track outgoing connection 6712 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 6713 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 6714 break; 6715 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 6716 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 6717 break; 6718 #endif 6719 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6720 #ifdef ENABLE_LE_CENTRAL 6721 case HCI_OPCODE_HCI_LE_CREATE_CIS: 6722 status = ERROR_CODE_SUCCESS; 6723 num_cis = packet[3]; 6724 // setup hci_iso_streams 6725 for (i=0;i<num_cis;i++){ 6726 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 4 + (4 * i)); 6727 status = hci_iso_stream_create(cis_handle, 0xff); 6728 if (status != ERROR_CODE_SUCCESS) { 6729 break; 6730 } 6731 } 6732 // free structs on error 6733 if (status != ERROR_CODE_SUCCESS){ 6734 hci_iso_stream_requested_finalize(0xff); 6735 return status; 6736 } 6737 break; 6738 #endif /* ENABLE_LE_CENTRAL */ 6739 #ifdef ENABLE_LE_PERIPHERAL 6740 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 6741 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 3); 6742 status = hci_iso_stream_create(cis_handle, 0xff); 6743 if (status != ERROR_CODE_SUCCESS){ 6744 return status; 6745 } 6746 break; 6747 #endif /* ENABLE_LE_PERIPHERAL */ 6748 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6749 #endif /* ENABLE_BLE */ 6750 default: 6751 break; 6752 } 6753 6754 hci_stack->num_cmd_packets--; 6755 6756 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 6757 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 6758 if (err != 0){ 6759 return ERROR_CODE_HARDWARE_FAILURE; 6760 } 6761 return ERROR_CODE_SUCCESS; 6762 } 6763 6764 // disconnect because of security block 6765 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 6766 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6767 if (!connection) return; 6768 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 6769 } 6770 6771 6772 // Configure Secure Simple Pairing 6773 6774 #ifdef ENABLE_CLASSIC 6775 6776 // enable will enable SSP during init 6777 void gap_ssp_set_enable(int enable){ 6778 hci_stack->ssp_enable = enable; 6779 } 6780 6781 static int hci_local_ssp_activated(void){ 6782 return gap_ssp_supported() && hci_stack->ssp_enable; 6783 } 6784 6785 // if set, BTstack will respond to io capability request using authentication requirement 6786 void gap_ssp_set_io_capability(int io_capability){ 6787 hci_stack->ssp_io_capability = io_capability; 6788 } 6789 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 6790 hci_stack->ssp_authentication_requirement = authentication_requirement; 6791 } 6792 6793 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 6794 void gap_ssp_set_auto_accept(int auto_accept){ 6795 hci_stack->ssp_auto_accept = auto_accept; 6796 } 6797 6798 void gap_secure_connections_enable(bool enable){ 6799 hci_stack->secure_connections_enable = enable; 6800 } 6801 bool gap_secure_connections_active(void){ 6802 return hci_stack->secure_connections_active; 6803 } 6804 6805 #endif 6806 6807 // va_list part of hci_send_cmd 6808 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 6809 if (!hci_can_send_command_packet_now()){ 6810 log_error("hci_send_cmd called but cannot send packet now"); 6811 return ERROR_CODE_COMMAND_DISALLOWED; 6812 } 6813 6814 // for HCI INITIALIZATION 6815 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 6816 hci_stack->last_cmd_opcode = cmd->opcode; 6817 6818 hci_reserve_packet_buffer(); 6819 uint8_t * packet = hci_stack->hci_packet_buffer; 6820 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 6821 uint8_t status = hci_send_cmd_packet(packet, size); 6822 6823 // release packet buffer on error or for synchronous transport implementations 6824 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 6825 hci_release_packet_buffer(); 6826 hci_emit_transport_packet_sent(); 6827 } 6828 6829 return status; 6830 } 6831 6832 /** 6833 * pre: numcmds >= 0 - it's allowed to send a command to the controller 6834 */ 6835 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 6836 va_list argptr; 6837 va_start(argptr, cmd); 6838 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 6839 va_end(argptr); 6840 return status; 6841 } 6842 6843 // Create various non-HCI events. 6844 // TODO: generalize, use table similar to hci_create_command 6845 6846 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 6847 // dump packet 6848 if (dump) { 6849 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 6850 } 6851 6852 // dispatch to all event handlers 6853 btstack_linked_list_iterator_t it; 6854 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 6855 while (btstack_linked_list_iterator_has_next(&it)){ 6856 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 6857 entry->callback(HCI_EVENT_PACKET, 0, event, size); 6858 } 6859 } 6860 6861 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 6862 if (!hci_stack->acl_packet_handler) return; 6863 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 6864 } 6865 6866 #ifdef ENABLE_CLASSIC 6867 static void hci_notify_if_sco_can_send_now(void){ 6868 // notify SCO sender if waiting 6869 if (!hci_stack->sco_waiting_for_can_send_now) return; 6870 if (hci_can_send_sco_packet_now()){ 6871 hci_stack->sco_waiting_for_can_send_now = 0; 6872 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 6873 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 6874 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 6875 } 6876 } 6877 6878 // parsing end emitting has been merged to reduce code size 6879 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 6880 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 6881 6882 uint8_t * eir_data; 6883 ad_context_t context; 6884 const uint8_t * name; 6885 uint8_t name_len; 6886 6887 if (size < 3) return; 6888 6889 int event_type = hci_event_packet_get_type(packet); 6890 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 6891 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 6892 6893 switch (event_type){ 6894 case HCI_EVENT_INQUIRY_RESULT: 6895 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6896 if (size != (3 + (num_responses * 14))) return; 6897 break; 6898 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6899 if (size != 257) return; 6900 if (num_responses != 1) return; 6901 break; 6902 default: 6903 return; 6904 } 6905 6906 // event[1] is set at the end 6907 int i; 6908 for (i=0; i<num_responses;i++){ 6909 memset(event, 0, sizeof(event)); 6910 event[0] = GAP_EVENT_INQUIRY_RESULT; 6911 uint8_t event_size = 27; // if name is not set by EIR 6912 6913 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 6914 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 6915 (void)memcpy(&event[9], 6916 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 6917 3); // class of device 6918 (void)memcpy(&event[12], 6919 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 6920 2); // clock offset 6921 6922 switch (event_type){ 6923 case HCI_EVENT_INQUIRY_RESULT: 6924 // 14,15,16,17 = 0, size 18 6925 break; 6926 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6927 event[14] = 1; 6928 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6929 // 16,17 = 0, size 18 6930 break; 6931 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6932 event[14] = 1; 6933 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6934 // EIR packets only contain a single inquiry response 6935 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 6936 name = NULL; 6937 // Iterate over EIR data 6938 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 6939 uint8_t data_type = ad_iterator_get_data_type(&context); 6940 uint8_t data_size = ad_iterator_get_data_len(&context); 6941 const uint8_t * data = ad_iterator_get_data(&context); 6942 // Prefer Complete Local Name over Shortened Local Name 6943 switch (data_type){ 6944 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 6945 if (name) continue; 6946 /* fall through */ 6947 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 6948 name = data; 6949 name_len = data_size; 6950 break; 6951 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 6952 if (data_size != 8) break; 6953 event[16] = 1; 6954 memcpy(&event[17], data, 8); 6955 break; 6956 default: 6957 break; 6958 } 6959 } 6960 if (name){ 6961 event[25] = 1; 6962 // truncate name if needed 6963 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 6964 event[26] = len; 6965 (void)memcpy(&event[27], name, len); 6966 event_size += len; 6967 } 6968 break; 6969 default: 6970 return; 6971 } 6972 event[1] = event_size - 2; 6973 hci_emit_event(event, event_size, 1); 6974 } 6975 } 6976 #endif 6977 6978 void hci_emit_state(void){ 6979 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 6980 uint8_t event[3]; 6981 event[0] = BTSTACK_EVENT_STATE; 6982 event[1] = sizeof(event) - 2u; 6983 event[2] = hci_stack->state; 6984 hci_emit_event(event, sizeof(event), 1); 6985 } 6986 6987 #ifdef ENABLE_CLASSIC 6988 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 6989 uint8_t event[13]; 6990 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 6991 event[1] = sizeof(event) - 2; 6992 event[2] = status; 6993 little_endian_store_16(event, 3, con_handle); 6994 reverse_bd_addr(address, &event[5]); 6995 event[11] = 1; // ACL connection 6996 event[12] = 0; // encryption disabled 6997 hci_emit_event(event, sizeof(event), 1); 6998 } 6999 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7000 if (disable_l2cap_timeouts) return; 7001 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7002 uint8_t event[4]; 7003 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7004 event[1] = sizeof(event) - 2; 7005 little_endian_store_16(event, 2, conn->con_handle); 7006 hci_emit_event(event, sizeof(event), 1); 7007 } 7008 #endif 7009 7010 #ifdef ENABLE_BLE 7011 #ifdef ENABLE_LE_CENTRAL 7012 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){ 7013 uint8_t event[21]; 7014 event[0] = HCI_EVENT_LE_META; 7015 event[1] = sizeof(event) - 2u; 7016 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7017 event[3] = status; 7018 little_endian_store_16(event, 4, con_handle); 7019 event[6] = 0; // TODO: role 7020 event[7] = address_type; 7021 reverse_bd_addr(address, &event[8]); 7022 little_endian_store_16(event, 14, 0); // interval 7023 little_endian_store_16(event, 16, 0); // latency 7024 little_endian_store_16(event, 18, 0); // supervision timeout 7025 event[20] = 0; // master clock accuracy 7026 hci_emit_event(event, sizeof(event), 1); 7027 } 7028 #endif 7029 #endif 7030 7031 static void hci_emit_transport_packet_sent(void){ 7032 // notify upper stack that it might be possible to send again 7033 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7034 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7035 } 7036 7037 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7038 uint8_t event[6]; 7039 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7040 event[1] = sizeof(event) - 2u; 7041 event[2] = 0; // status = OK 7042 little_endian_store_16(event, 3, con_handle); 7043 event[5] = reason; 7044 hci_emit_event(event, sizeof(event), 1); 7045 } 7046 7047 static void hci_emit_nr_connections_changed(void){ 7048 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7049 uint8_t event[3]; 7050 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7051 event[1] = sizeof(event) - 2u; 7052 event[2] = nr_hci_connections(); 7053 hci_emit_event(event, sizeof(event), 1); 7054 } 7055 7056 static void hci_emit_hci_open_failed(void){ 7057 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7058 uint8_t event[2]; 7059 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7060 event[1] = sizeof(event) - 2u; 7061 hci_emit_event(event, sizeof(event), 1); 7062 } 7063 7064 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7065 log_info("hci_emit_dedicated_bonding_result %u ", status); 7066 uint8_t event[9]; 7067 int pos = 0; 7068 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7069 event[pos++] = sizeof(event) - 2u; 7070 event[pos++] = status; 7071 reverse_bd_addr(address, &event[pos]); 7072 hci_emit_event(event, sizeof(event), 1); 7073 } 7074 7075 7076 #ifdef ENABLE_CLASSIC 7077 7078 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7079 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7080 uint8_t event[5]; 7081 int pos = 0; 7082 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7083 event[pos++] = sizeof(event) - 2; 7084 little_endian_store_16(event, 2, con_handle); 7085 pos += 2; 7086 event[pos++] = level; 7087 hci_emit_event(event, sizeof(event), 1); 7088 } 7089 7090 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7091 if (!connection) return LEVEL_0; 7092 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7093 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7094 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7095 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7096 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7097 // LEVEL 4 always requires 128 bit encrytion key size 7098 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7099 security_level = LEVEL_3; 7100 } 7101 return security_level; 7102 } 7103 7104 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7105 uint8_t event[4]; 7106 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7107 event[1] = sizeof(event) - 2; 7108 event[2] = discoverable; 7109 event[3] = connectable; 7110 hci_emit_event(event, sizeof(event), 1); 7111 } 7112 7113 // query if remote side supports eSCO 7114 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7115 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7116 if (!connection) return false; 7117 return (connection->remote_supported_features[0] & 1) != 0; 7118 } 7119 7120 static bool hci_ssp_supported(hci_connection_t * connection){ 7121 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7122 return (connection->bonding_flags & mask) == mask; 7123 } 7124 7125 // query if remote side supports SSP 7126 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7127 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7128 if (!connection) return false; 7129 return hci_ssp_supported(connection) ? 1 : 0; 7130 } 7131 7132 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7133 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7134 } 7135 7136 /** 7137 * Check if remote supported features query has completed 7138 */ 7139 bool hci_remote_features_available(hci_con_handle_t handle){ 7140 hci_connection_t * connection = hci_connection_for_handle(handle); 7141 if (!connection) return false; 7142 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7143 } 7144 7145 /** 7146 * Trigger remote supported features query 7147 */ 7148 7149 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7150 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7151 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7152 } 7153 } 7154 7155 void hci_remote_features_query(hci_con_handle_t con_handle){ 7156 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7157 if (!connection) return; 7158 hci_trigger_remote_features_for_connection(connection); 7159 hci_run(); 7160 } 7161 7162 // GAP API 7163 /** 7164 * @bbrief enable/disable bonding. default is enabled 7165 * @praram enabled 7166 */ 7167 void gap_set_bondable_mode(int enable){ 7168 hci_stack->bondable = enable ? 1 : 0; 7169 } 7170 /** 7171 * @brief Get bondable mode. 7172 * @return 1 if bondable 7173 */ 7174 int gap_get_bondable_mode(void){ 7175 return hci_stack->bondable; 7176 } 7177 7178 /** 7179 * @brief map link keys to security levels 7180 */ 7181 gap_security_level_t gap_security_level_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 return LEVEL_4; 7185 case COMBINATION_KEY: 7186 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7187 return LEVEL_3; 7188 default: 7189 return LEVEL_2; 7190 } 7191 } 7192 7193 /** 7194 * @brief map link keys to secure connection yes/no 7195 */ 7196 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7197 switch (link_key_type){ 7198 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7199 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7200 return true; 7201 default: 7202 return false; 7203 } 7204 } 7205 7206 /** 7207 * @brief map link keys to authenticated 7208 */ 7209 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7210 switch (link_key_type){ 7211 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7212 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7213 return true; 7214 default: 7215 return false; 7216 } 7217 } 7218 7219 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7220 log_info("gap_mitm_protection_required_for_security_level %u", level); 7221 return level > LEVEL_2; 7222 } 7223 7224 /** 7225 * @brief get current security level 7226 */ 7227 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7228 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7229 if (!connection) return LEVEL_0; 7230 return gap_security_level_for_connection(connection); 7231 } 7232 7233 /** 7234 * @brief request connection to device to 7235 * @result GAP_AUTHENTICATION_RESULT 7236 */ 7237 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7238 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7239 if (!connection){ 7240 hci_emit_security_level(con_handle, LEVEL_0); 7241 return; 7242 } 7243 7244 btstack_assert(hci_is_le_connection(connection) == false); 7245 7246 // 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) 7247 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7248 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7249 requested_level = LEVEL_4; 7250 } 7251 7252 gap_security_level_t current_level = gap_security_level(con_handle); 7253 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7254 requested_level, connection->requested_security_level, current_level); 7255 7256 // authentication active if authentication request was sent or planned level > 0 7257 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7258 if (authentication_active){ 7259 // authentication already active 7260 if (connection->requested_security_level < requested_level){ 7261 // increase requested level as new level is higher 7262 // TODO: handle re-authentication when done 7263 connection->requested_security_level = requested_level; 7264 } 7265 } else { 7266 // no request active, notify if security sufficient 7267 if (requested_level <= current_level){ 7268 hci_emit_security_level(con_handle, current_level); 7269 return; 7270 } 7271 7272 // store request 7273 connection->requested_security_level = requested_level; 7274 7275 // start to authenticate connection 7276 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7277 7278 // request remote features if not already active, also trigger hci_run 7279 hci_remote_features_query(con_handle); 7280 } 7281 } 7282 7283 /** 7284 * @brief start dedicated bonding with device. disconnect after bonding 7285 * @param device 7286 * @param request MITM protection 7287 * @result GAP_DEDICATED_BONDING_COMPLETE 7288 */ 7289 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7290 7291 // create connection state machine 7292 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7293 7294 if (!connection){ 7295 return BTSTACK_MEMORY_ALLOC_FAILED; 7296 } 7297 7298 // delete linkn key 7299 gap_drop_link_key_for_bd_addr(device); 7300 7301 // configure LEVEL_2/3, dedicated bonding 7302 connection->state = SEND_CREATE_CONNECTION; 7303 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7304 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7305 connection->bonding_flags = BONDING_DEDICATED; 7306 7307 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7308 7309 // handle: connnection failure (connection complete != ok) 7310 // handle: authentication failure 7311 // handle: disconnect on done 7312 7313 hci_run(); 7314 7315 return 0; 7316 } 7317 7318 void gap_set_local_name(const char * local_name){ 7319 hci_stack->local_name = local_name; 7320 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7321 // also update EIR if not set by user 7322 if (hci_stack->eir_data == NULL){ 7323 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7324 } 7325 hci_run(); 7326 } 7327 #endif 7328 7329 7330 #ifdef ENABLE_BLE 7331 7332 #ifdef ENABLE_LE_CENTRAL 7333 void gap_start_scan(void){ 7334 hci_stack->le_scanning_enabled = true; 7335 hci_run(); 7336 } 7337 7338 void gap_stop_scan(void){ 7339 hci_stack->le_scanning_enabled = false; 7340 hci_run(); 7341 } 7342 7343 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7344 hci_stack->le_scan_type = scan_type; 7345 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7346 hci_stack->le_scan_interval = scan_interval; 7347 hci_stack->le_scan_window = scan_window; 7348 hci_stack->le_scanning_param_update = true; 7349 hci_run(); 7350 } 7351 7352 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7353 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7354 } 7355 7356 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7357 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7358 if (!conn){ 7359 // disallow if le connection is already outgoing 7360 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7361 log_error("le connection already active"); 7362 return ERROR_CODE_COMMAND_DISALLOWED; 7363 } 7364 7365 log_info("gap_connect: no connection exists yet, creating context"); 7366 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7367 if (!conn){ 7368 // notify client that alloc failed 7369 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7370 log_info("gap_connect: failed to alloc hci_connection_t"); 7371 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7372 } 7373 7374 // set le connecting state 7375 if (hci_is_le_connection_type(addr_type)){ 7376 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7377 } 7378 7379 conn->state = SEND_CREATE_CONNECTION; 7380 log_info("gap_connect: send create connection next"); 7381 hci_run(); 7382 return ERROR_CODE_SUCCESS; 7383 } 7384 7385 if (!hci_is_le_connection(conn) || 7386 (conn->state == SEND_CREATE_CONNECTION) || 7387 (conn->state == SENT_CREATE_CONNECTION)) { 7388 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7389 log_error("gap_connect: classic connection or connect is already being created"); 7390 return GATT_CLIENT_IN_WRONG_STATE; 7391 } 7392 7393 // check if connection was just disconnected 7394 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7395 log_info("gap_connect: send create connection (again)"); 7396 conn->state = SEND_CREATE_CONNECTION; 7397 hci_run(); 7398 return ERROR_CODE_SUCCESS; 7399 } 7400 7401 log_info("gap_connect: context exists with state %u", conn->state); 7402 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7403 hci_run(); 7404 return ERROR_CODE_SUCCESS; 7405 } 7406 7407 // @assumption: only a single outgoing LE Connection exists 7408 static hci_connection_t * gap_get_outgoing_connection(void){ 7409 btstack_linked_item_t *it; 7410 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7411 hci_connection_t * conn = (hci_connection_t *) it; 7412 if (!hci_is_le_connection(conn)) continue; 7413 switch (conn->state){ 7414 case SEND_CREATE_CONNECTION: 7415 case SENT_CREATE_CONNECTION: 7416 case SENT_CANCEL_CONNECTION: 7417 return conn; 7418 default: 7419 break; 7420 }; 7421 } 7422 return NULL; 7423 } 7424 7425 uint8_t gap_connect_cancel(void){ 7426 hci_connection_t * conn; 7427 switch (hci_stack->le_connecting_request){ 7428 case LE_CONNECTING_IDLE: 7429 break; 7430 case LE_CONNECTING_WHITELIST: 7431 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7432 hci_run(); 7433 break; 7434 case LE_CONNECTING_DIRECT: 7435 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7436 conn = gap_get_outgoing_connection(); 7437 if (conn == NULL){ 7438 hci_run(); 7439 } else { 7440 switch (conn->state){ 7441 case SEND_CREATE_CONNECTION: 7442 // skip sending create connection and emit event instead 7443 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7444 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7445 btstack_memory_hci_connection_free( conn ); 7446 break; 7447 case SENT_CREATE_CONNECTION: 7448 // request to send cancel connection 7449 conn->state = SEND_CANCEL_CONNECTION; 7450 hci_run(); 7451 break; 7452 default: 7453 break; 7454 } 7455 } 7456 break; 7457 default: 7458 btstack_unreachable(); 7459 break; 7460 } 7461 return ERROR_CODE_SUCCESS; 7462 } 7463 7464 /** 7465 * @brief Set connection parameters for outgoing connections 7466 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7467 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7468 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7469 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7470 * @param conn_latency, default: 4 7471 * @param supervision_timeout (unit: 10ms), default: 720 ms 7472 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7473 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7474 */ 7475 7476 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7477 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7478 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7479 hci_stack->le_connection_scan_interval = conn_scan_interval; 7480 hci_stack->le_connection_scan_window = conn_scan_window; 7481 hci_stack->le_connection_interval_min = conn_interval_min; 7482 hci_stack->le_connection_interval_max = conn_interval_max; 7483 hci_stack->le_connection_latency = conn_latency; 7484 hci_stack->le_supervision_timeout = supervision_timeout; 7485 hci_stack->le_minimum_ce_length = min_ce_length; 7486 hci_stack->le_maximum_ce_length = max_ce_length; 7487 } 7488 #endif 7489 7490 /** 7491 * @brief Updates the connection parameters for a given LE connection 7492 * @param handle 7493 * @param conn_interval_min (unit: 1.25ms) 7494 * @param conn_interval_max (unit: 1.25ms) 7495 * @param conn_latency 7496 * @param supervision_timeout (unit: 10ms) 7497 * @return 0 if ok 7498 */ 7499 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7500 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7501 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7502 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7503 connection->le_conn_interval_min = conn_interval_min; 7504 connection->le_conn_interval_max = conn_interval_max; 7505 connection->le_conn_latency = conn_latency; 7506 connection->le_supervision_timeout = supervision_timeout; 7507 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7508 hci_run(); 7509 return 0; 7510 } 7511 7512 /** 7513 * @brief Request an update of the connection parameter for a given LE connection 7514 * @param handle 7515 * @param conn_interval_min (unit: 1.25ms) 7516 * @param conn_interval_max (unit: 1.25ms) 7517 * @param conn_latency 7518 * @param supervision_timeout (unit: 10ms) 7519 * @return 0 if ok 7520 */ 7521 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7522 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7523 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7524 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7525 connection->le_conn_interval_min = conn_interval_min; 7526 connection->le_conn_interval_max = conn_interval_max; 7527 connection->le_conn_latency = conn_latency; 7528 connection->le_supervision_timeout = supervision_timeout; 7529 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7530 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7531 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7532 return 0; 7533 } 7534 7535 #ifdef ENABLE_LE_PERIPHERAL 7536 7537 /** 7538 * @brief Set Advertisement Data 7539 * @param advertising_data_length 7540 * @param advertising_data (max 31 octets) 7541 * @note data is not copied, pointer has to stay valid 7542 */ 7543 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7544 hci_stack->le_advertisements_data_len = advertising_data_length; 7545 hci_stack->le_advertisements_data = advertising_data; 7546 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7547 hci_run(); 7548 } 7549 7550 /** 7551 * @brief Set Scan Response Data 7552 * @param advertising_data_length 7553 * @param advertising_data (max 31 octets) 7554 * @note data is not copied, pointer has to stay valid 7555 */ 7556 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7557 hci_stack->le_scan_response_data_len = scan_response_data_length; 7558 hci_stack->le_scan_response_data = scan_response_data; 7559 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7560 hci_run(); 7561 } 7562 7563 /** 7564 * @brief Set Advertisement Parameters 7565 * @param adv_int_min 7566 * @param adv_int_max 7567 * @param adv_type 7568 * @param direct_address_type 7569 * @param direct_address 7570 * @param channel_map 7571 * @param filter_policy 7572 * 7573 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7574 */ 7575 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7576 uint8_t direct_address_typ, bd_addr_t direct_address, 7577 uint8_t channel_map, uint8_t filter_policy) { 7578 7579 hci_stack->le_advertisements_interval_min = adv_int_min; 7580 hci_stack->le_advertisements_interval_max = adv_int_max; 7581 hci_stack->le_advertisements_type = adv_type; 7582 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7583 hci_stack->le_advertisements_channel_map = channel_map; 7584 hci_stack->le_advertisements_filter_policy = filter_policy; 7585 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7586 6); 7587 7588 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7589 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7590 hci_run(); 7591 } 7592 7593 /** 7594 * @brief Enable/Disable Advertisements 7595 * @param enabled 7596 */ 7597 void gap_advertisements_enable(int enabled){ 7598 if (enabled == 0){ 7599 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7600 } else { 7601 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 7602 } 7603 hci_update_advertisements_enabled_for_current_roles(); 7604 hci_run(); 7605 } 7606 7607 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7608 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 7609 btstack_linked_list_iterator_t it; 7610 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7611 while (btstack_linked_list_iterator_has_next(&it)){ 7612 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7613 if ( item->advertising_handle == advertising_handle ) { 7614 return item; 7615 } 7616 } 7617 return NULL; 7618 } 7619 7620 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 7621 // find free advertisement handle 7622 uint8_t advertisement_handle; 7623 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 7624 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 7625 } 7626 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7627 // clear 7628 memset(storage, 0, sizeof(le_advertising_set_t)); 7629 // copy params 7630 storage->advertising_handle = advertisement_handle; 7631 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7632 // add to list 7633 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 7634 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7635 *out_advertising_handle = advertisement_handle; 7636 // set tasks and start 7637 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7638 hci_run(); 7639 return ERROR_CODE_SUCCESS; 7640 } 7641 7642 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 7643 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7644 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7645 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7646 // set tasks and start 7647 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7648 hci_run(); 7649 return ERROR_CODE_SUCCESS; 7650 } 7651 7652 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 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 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 7656 return ERROR_CODE_SUCCESS; 7657 } 7658 7659 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 7660 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7661 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7662 memcpy(advertising_set->random_address, random_address, 6); 7663 // set tasks and start 7664 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7665 hci_run(); 7666 return ERROR_CODE_SUCCESS; 7667 } 7668 7669 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 7670 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7671 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7672 advertising_set->adv_data = advertising_data; 7673 advertising_set->adv_data_len = advertising_data_length; 7674 // set tasks and start 7675 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7676 hci_run(); 7677 return ERROR_CODE_SUCCESS; 7678 } 7679 7680 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){ 7681 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7682 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7683 advertising_set->scan_data = scan_response_data; 7684 advertising_set->scan_data_len = scan_response_data_length; 7685 // set tasks and start 7686 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7687 hci_run(); 7688 return ERROR_CODE_SUCCESS; 7689 } 7690 7691 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 7692 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7693 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7694 advertising_set->enable_timeout = timeout; 7695 advertising_set->enable_max_scan_events = num_extended_advertising_events; 7696 // set tasks and start 7697 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 7698 hci_run(); 7699 return ERROR_CODE_SUCCESS; 7700 } 7701 7702 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 7703 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7704 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7705 // set tasks and start 7706 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7707 hci_run(); 7708 return ERROR_CODE_SUCCESS; 7709 } 7710 7711 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 7712 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7713 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7714 // set tasks and start 7715 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 7716 hci_run(); 7717 return ERROR_CODE_SUCCESS; 7718 } 7719 7720 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7721 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 7722 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7723 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7724 // periodic advertising requires neither connectable, scannable, legacy or anonymous 7725 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7726 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 7727 // set tasks and start 7728 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 7729 hci_run(); 7730 return ERROR_CODE_SUCCESS; 7731 } 7732 7733 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 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 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 7737 return ERROR_CODE_SUCCESS; 7738 } 7739 7740 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 7741 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7742 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7743 advertising_set->periodic_data = periodic_data; 7744 advertising_set->periodic_data_len = periodic_data_length; 7745 // set tasks and start 7746 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 7747 hci_run(); 7748 return ERROR_CODE_SUCCESS; 7749 } 7750 7751 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 7752 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7753 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7754 // set tasks and start 7755 advertising_set->periodic_include_adi = include_adi; 7756 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7757 hci_run(); 7758 return ERROR_CODE_SUCCESS; 7759 } 7760 7761 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 7762 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7763 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7764 // set tasks and start 7765 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7766 hci_run(); 7767 return ERROR_CODE_SUCCESS; 7768 } 7769 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7770 7771 #endif 7772 7773 #endif 7774 7775 void hci_le_set_own_address_type(uint8_t own_address_type){ 7776 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 7777 if (own_address_type == hci_stack->le_own_addr_type) return; 7778 hci_stack->le_own_addr_type = own_address_type; 7779 7780 #ifdef ENABLE_LE_PERIPHERAL 7781 // update advertisement parameters, too 7782 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7783 hci_run(); 7784 #endif 7785 #ifdef ENABLE_LE_CENTRAL 7786 // note: we don't update scan parameters or modify ongoing connection attempts 7787 #endif 7788 } 7789 7790 void hci_le_random_address_set(const bd_addr_t random_address){ 7791 memcpy(hci_stack->le_random_address, random_address, 6); 7792 hci_stack->le_random_address_set = true; 7793 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7794 hci_run(); 7795 } 7796 7797 #endif 7798 7799 uint8_t gap_disconnect(hci_con_handle_t handle){ 7800 hci_connection_t * conn = hci_connection_for_handle(handle); 7801 if (!conn){ 7802 hci_emit_disconnection_complete(handle, 0); 7803 return 0; 7804 } 7805 // ignore if already disconnected 7806 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7807 return 0; 7808 } 7809 conn->state = SEND_DISCONNECT; 7810 hci_run(); 7811 return 0; 7812 } 7813 7814 int gap_read_rssi(hci_con_handle_t con_handle){ 7815 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7816 if (hci_connection == NULL) return 0; 7817 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 7818 hci_run(); 7819 return 1; 7820 } 7821 7822 /** 7823 * @brief Get connection type 7824 * @param con_handle 7825 * @result connection_type 7826 */ 7827 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 7828 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7829 if (!conn) return GAP_CONNECTION_INVALID; 7830 switch (conn->address_type){ 7831 case BD_ADDR_TYPE_LE_PUBLIC: 7832 case BD_ADDR_TYPE_LE_RANDOM: 7833 return GAP_CONNECTION_LE; 7834 case BD_ADDR_TYPE_SCO: 7835 return GAP_CONNECTION_SCO; 7836 case BD_ADDR_TYPE_ACL: 7837 return GAP_CONNECTION_ACL; 7838 default: 7839 return GAP_CONNECTION_INVALID; 7840 } 7841 } 7842 7843 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 7844 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7845 if (!conn) return HCI_ROLE_INVALID; 7846 return (hci_role_t) conn->role; 7847 } 7848 7849 7850 #ifdef ENABLE_CLASSIC 7851 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 7852 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7853 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7854 conn->request_role = role; 7855 hci_run(); 7856 return ERROR_CODE_SUCCESS; 7857 } 7858 #endif 7859 7860 #ifdef ENABLE_BLE 7861 7862 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){ 7863 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7864 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7865 7866 conn->le_phy_update_all_phys = all_phys; 7867 conn->le_phy_update_tx_phys = tx_phys; 7868 conn->le_phy_update_rx_phys = rx_phys; 7869 conn->le_phy_update_phy_options = phy_options; 7870 7871 hci_run(); 7872 7873 return 0; 7874 } 7875 7876 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7877 // check if already in list 7878 btstack_linked_list_iterator_t it; 7879 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7880 while (btstack_linked_list_iterator_has_next(&it)) { 7881 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 7882 if (entry->address_type != address_type) { 7883 continue; 7884 } 7885 if (memcmp(entry->address, address, 6) != 0) { 7886 continue; 7887 } 7888 // disallow if already scheduled to add 7889 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 7890 return ERROR_CODE_COMMAND_DISALLOWED; 7891 } 7892 // still on controller, but scheduled to remove -> re-add 7893 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 7894 return ERROR_CODE_SUCCESS; 7895 } 7896 // alloc and add to list 7897 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 7898 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 7899 entry->address_type = address_type; 7900 (void)memcpy(entry->address, address, 6); 7901 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 7902 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 7903 return ERROR_CODE_SUCCESS; 7904 } 7905 7906 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7907 btstack_linked_list_iterator_t it; 7908 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7909 while (btstack_linked_list_iterator_has_next(&it)){ 7910 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7911 if (entry->address_type != address_type) { 7912 continue; 7913 } 7914 if (memcmp(entry->address, address, 6) != 0) { 7915 continue; 7916 } 7917 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7918 // remove from controller if already present 7919 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7920 } else { 7921 // directly remove entry from whitelist 7922 btstack_linked_list_iterator_remove(&it); 7923 btstack_memory_whitelist_entry_free(entry); 7924 } 7925 return ERROR_CODE_SUCCESS; 7926 } 7927 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7928 } 7929 7930 static void hci_whitelist_clear(void){ 7931 btstack_linked_list_iterator_t it; 7932 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7933 while (btstack_linked_list_iterator_has_next(&it)){ 7934 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7935 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7936 // remove from controller if already present 7937 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7938 continue; 7939 } 7940 // directly remove entry from whitelist 7941 btstack_linked_list_iterator_remove(&it); 7942 btstack_memory_whitelist_entry_free(entry); 7943 } 7944 } 7945 7946 // free all entries unconditionally 7947 static void hci_whitelist_free(void){ 7948 btstack_linked_list_iterator_t lit; 7949 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 7950 while (btstack_linked_list_iterator_has_next(&lit)){ 7951 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 7952 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 7953 btstack_memory_whitelist_entry_free(entry); 7954 } 7955 } 7956 7957 /** 7958 * @brief Clear Whitelist 7959 * @return 0 if ok 7960 */ 7961 uint8_t gap_whitelist_clear(void){ 7962 hci_whitelist_clear(); 7963 hci_run(); 7964 return ERROR_CODE_SUCCESS; 7965 } 7966 7967 /** 7968 * @brief Add Device to Whitelist 7969 * @param address_typ 7970 * @param address 7971 * @return 0 if ok 7972 */ 7973 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7974 uint8_t status = hci_whitelist_add(address_type, address); 7975 if (status){ 7976 return status; 7977 } 7978 hci_run(); 7979 return ERROR_CODE_SUCCESS; 7980 } 7981 7982 /** 7983 * @brief Remove Device from Whitelist 7984 * @param address_typ 7985 * @param address 7986 * @return 0 if ok 7987 */ 7988 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7989 uint8_t status = hci_whitelist_remove(address_type, address); 7990 if (status){ 7991 return status; 7992 } 7993 hci_run(); 7994 return ERROR_CODE_SUCCESS; 7995 } 7996 7997 #ifdef ENABLE_LE_CENTRAL 7998 /** 7999 * @brief Connect with Whitelist 8000 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8001 * @return - if ok 8002 */ 8003 uint8_t gap_connect_with_whitelist(void){ 8004 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8005 return ERROR_CODE_COMMAND_DISALLOWED; 8006 } 8007 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8008 hci_run(); 8009 return ERROR_CODE_SUCCESS; 8010 } 8011 8012 /** 8013 * @brief Auto Connection Establishment - Start Connecting to device 8014 * @param address_typ 8015 * @param address 8016 * @return 0 if ok 8017 */ 8018 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8019 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8020 return ERROR_CODE_COMMAND_DISALLOWED; 8021 } 8022 8023 uint8_t status = hci_whitelist_add(address_type, address); 8024 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8025 return status; 8026 } 8027 8028 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8029 8030 hci_run(); 8031 return ERROR_CODE_SUCCESS; 8032 } 8033 8034 /** 8035 * @brief Auto Connection Establishment - Stop Connecting to device 8036 * @param address_typ 8037 * @param address 8038 * @return 0 if ok 8039 */ 8040 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8041 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8042 return ERROR_CODE_COMMAND_DISALLOWED; 8043 } 8044 8045 hci_whitelist_remove(address_type, address); 8046 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8047 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8048 } 8049 hci_run(); 8050 return 0; 8051 } 8052 8053 /** 8054 * @brief Auto Connection Establishment - Stop everything 8055 * @note Convenience function to stop all active auto connection attempts 8056 */ 8057 uint8_t gap_auto_connection_stop_all(void){ 8058 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8059 return ERROR_CODE_COMMAND_DISALLOWED; 8060 } 8061 hci_whitelist_clear(); 8062 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8063 hci_run(); 8064 return ERROR_CODE_SUCCESS; 8065 } 8066 8067 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8068 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8069 if (!conn) return 0; 8070 return conn->le_connection_interval; 8071 } 8072 #endif 8073 #endif 8074 8075 #ifdef ENABLE_CLASSIC 8076 /** 8077 * @brief Set Extended Inquiry Response data 8078 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8079 * @note has to be done before stack starts up 8080 */ 8081 void gap_set_extended_inquiry_response(const uint8_t * data){ 8082 hci_stack->eir_data = data; 8083 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8084 hci_run(); 8085 } 8086 8087 /** 8088 * @brief Start GAP Classic Inquiry 8089 * @param duration in 1.28s units 8090 * @return 0 if ok 8091 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8092 */ 8093 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8094 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8095 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8096 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8097 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8098 } 8099 hci_stack->inquiry_state = duration_in_1280ms_units; 8100 hci_stack->inquiry_max_period_length = 0; 8101 hci_stack->inquiry_min_period_length = 0; 8102 hci_run(); 8103 return 0; 8104 } 8105 8106 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8107 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8108 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8109 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8110 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8111 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8112 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8113 8114 hci_stack->inquiry_state = duration; 8115 hci_stack->inquiry_max_period_length = max_period_length; 8116 hci_stack->inquiry_min_period_length = min_period_length; 8117 hci_run(); 8118 return 0; 8119 } 8120 8121 /** 8122 * @brief Stop GAP Classic Inquiry 8123 * @return 0 if ok 8124 */ 8125 int gap_inquiry_stop(void){ 8126 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8127 // emit inquiry complete event, before it even started 8128 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8129 hci_emit_event(event, sizeof(event), 1); 8130 return 0; 8131 } 8132 switch (hci_stack->inquiry_state){ 8133 case GAP_INQUIRY_STATE_ACTIVE: 8134 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8135 hci_run(); 8136 return ERROR_CODE_SUCCESS; 8137 case GAP_INQUIRY_STATE_PERIODIC: 8138 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8139 hci_run(); 8140 return ERROR_CODE_SUCCESS; 8141 default: 8142 return ERROR_CODE_COMMAND_DISALLOWED; 8143 } 8144 } 8145 8146 void gap_inquiry_set_lap(uint32_t lap){ 8147 hci_stack->inquiry_lap = lap; 8148 } 8149 8150 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8151 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8152 hci_stack->inquiry_scan_window = inquiry_scan_window; 8153 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8154 hci_run(); 8155 } 8156 8157 8158 /** 8159 * @brief Remote Name Request 8160 * @param addr 8161 * @param page_scan_repetition_mode 8162 * @param clock_offset only used when bit 15 is set 8163 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8164 */ 8165 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8166 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8167 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8168 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8169 hci_stack->remote_name_clock_offset = clock_offset; 8170 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8171 hci_run(); 8172 return 0; 8173 } 8174 8175 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8176 hci_stack->gap_pairing_state = state; 8177 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8178 hci_run(); 8179 return 0; 8180 } 8181 8182 /** 8183 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8184 * @param addr 8185 * @param pin_data 8186 * @param pin_len 8187 * @return 0 if ok 8188 */ 8189 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8190 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8191 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8192 hci_stack->gap_pairing_pin_len = pin_len; 8193 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8194 } 8195 8196 /** 8197 * @brief Legacy Pairing Pin Code Response 8198 * @param addr 8199 * @param pin 8200 * @return 0 if ok 8201 */ 8202 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8203 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8204 } 8205 8206 /** 8207 * @brief Abort Legacy Pairing 8208 * @param addr 8209 * @param pin 8210 * @return 0 if ok 8211 */ 8212 int gap_pin_code_negative(bd_addr_t addr){ 8213 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8214 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8215 } 8216 8217 /** 8218 * @brief SSP Passkey Response 8219 * @param addr 8220 * @param passkey 8221 * @return 0 if ok 8222 */ 8223 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8224 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8225 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8226 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8227 } 8228 8229 /** 8230 * @brief Abort SSP Passkey Entry/Pairing 8231 * @param addr 8232 * @param pin 8233 * @return 0 if ok 8234 */ 8235 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8236 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8237 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8238 } 8239 8240 /** 8241 * @brief Accept SSP Numeric Comparison 8242 * @param addr 8243 * @param passkey 8244 * @return 0 if ok 8245 */ 8246 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8247 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8248 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8249 } 8250 8251 /** 8252 * @brief Abort SSP Numeric Comparison/Pairing 8253 * @param addr 8254 * @param pin 8255 * @return 0 if ok 8256 */ 8257 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8258 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8259 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8260 } 8261 8262 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8263 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8264 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8265 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8266 connectionSetAuthenticationFlags(conn, flag); 8267 hci_run(); 8268 return ERROR_CODE_SUCCESS; 8269 } 8270 #endif 8271 8272 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8273 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8274 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8275 } 8276 8277 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8278 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8279 } 8280 #endif 8281 8282 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8283 /** 8284 * @brief Report Remote OOB Data 8285 * @param bd_addr 8286 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8287 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8288 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8289 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8290 */ 8291 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){ 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 connection->classic_oob_c_192 = c_192; 8297 connection->classic_oob_r_192 = r_192; 8298 8299 // ignore P-256 if not supported by us 8300 if (hci_stack->secure_connections_active){ 8301 connection->classic_oob_c_256 = c_256; 8302 connection->classic_oob_r_256 = r_256; 8303 } 8304 8305 return ERROR_CODE_SUCCESS; 8306 } 8307 /** 8308 * @brief Generate new OOB data 8309 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8310 */ 8311 void gap_ssp_generate_oob_data(void){ 8312 hci_stack->classic_read_local_oob_data = true; 8313 hci_run(); 8314 } 8315 8316 #endif 8317 8318 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8319 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8320 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8321 if (connection == NULL) { 8322 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8323 } 8324 8325 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8326 connection->link_key_type = type; 8327 8328 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8329 } 8330 8331 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8332 /** 8333 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8334 * @param inquiry_mode see bluetooth_defines.h 8335 */ 8336 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8337 hci_stack->inquiry_mode = inquiry_mode; 8338 } 8339 8340 /** 8341 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8342 */ 8343 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8344 hci_stack->sco_voice_setting = voice_setting; 8345 } 8346 8347 /** 8348 * @brief Get SCO Voice Setting 8349 * @return current voice setting 8350 */ 8351 uint16_t hci_get_sco_voice_setting(void){ 8352 return hci_stack->sco_voice_setting; 8353 } 8354 8355 static int hci_have_usb_transport(void){ 8356 if (!hci_stack->hci_transport) return 0; 8357 const char * transport_name = hci_stack->hci_transport->name; 8358 if (!transport_name) return 0; 8359 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8360 } 8361 8362 /** @brief Get SCO packet length for current SCO Voice setting 8363 * @note Using SCO packets of the exact length is required for USB transfer 8364 * @return Length of SCO packets in bytes (not audio frames) 8365 */ 8366 uint16_t hci_get_sco_packet_length(void){ 8367 uint16_t sco_packet_length = 0; 8368 8369 #ifdef ENABLE_SCO_OVER_HCI 8370 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8371 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8372 8373 if (hci_have_usb_transport()){ 8374 // see Core Spec for H2 USB Transfer. 8375 // 3 byte SCO header + 24 bytes per connection 8376 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8377 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8378 } else { 8379 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8380 sco_packet_length = 3 + 60 * multiplier; 8381 // assert that it still fits inside an SCO buffer 8382 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8383 sco_packet_length = 3 + 60; 8384 } 8385 } 8386 #endif 8387 8388 #ifdef HAVE_SCO_TRANSPORT 8389 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8390 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8391 sco_packet_length = 3 + 60 * multiplier; 8392 #endif 8393 return sco_packet_length; 8394 } 8395 8396 /** 8397 * @brief Sets the master/slave policy 8398 * @param policy (0: attempt to become master, 1: let connecting device decide) 8399 */ 8400 void hci_set_master_slave_policy(uint8_t policy){ 8401 hci_stack->master_slave_policy = policy; 8402 } 8403 8404 #endif 8405 8406 HCI_STATE hci_get_state(void){ 8407 return hci_stack->state; 8408 } 8409 8410 #ifdef ENABLE_CLASSIC 8411 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8412 hci_stack->gap_classic_accept_callback = accept_callback; 8413 } 8414 #endif 8415 8416 /** 8417 * @brief Set callback for Bluetooth Hardware Error 8418 */ 8419 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8420 hci_stack->hardware_error_callback = fn; 8421 } 8422 8423 void hci_disconnect_all(void){ 8424 btstack_linked_list_iterator_t it; 8425 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8426 while (btstack_linked_list_iterator_has_next(&it)){ 8427 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8428 if (con->state == SENT_DISCONNECT) continue; 8429 con->state = SEND_DISCONNECT; 8430 } 8431 hci_run(); 8432 } 8433 8434 uint16_t hci_get_manufacturer(void){ 8435 return hci_stack->manufacturer; 8436 } 8437 8438 #ifdef ENABLE_BLE 8439 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8440 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8441 if (!hci_con) return NULL; 8442 return &hci_con->sm_connection; 8443 } 8444 8445 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8446 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8447 #endif 8448 8449 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8450 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8451 if (hci_connection == NULL) return 0; 8452 if (hci_is_le_connection(hci_connection)){ 8453 #ifdef ENABLE_BLE 8454 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8455 if (sm_conn->sm_connection_encrypted) { 8456 return sm_conn->sm_actual_encryption_key_size; 8457 } 8458 #endif 8459 } else { 8460 #ifdef ENABLE_CLASSIC 8461 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8462 return hci_connection->encryption_key_size; 8463 } 8464 #endif 8465 } 8466 return 0; 8467 } 8468 8469 bool gap_authenticated(hci_con_handle_t con_handle){ 8470 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8471 if (hci_connection == NULL) return false; 8472 8473 switch (hci_connection->address_type){ 8474 #ifdef ENABLE_BLE 8475 case BD_ADDR_TYPE_LE_PUBLIC: 8476 case BD_ADDR_TYPE_LE_RANDOM: 8477 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8478 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8479 #endif 8480 #ifdef ENABLE_CLASSIC 8481 case BD_ADDR_TYPE_SCO: 8482 case BD_ADDR_TYPE_ACL: 8483 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8484 #endif 8485 default: 8486 return false; 8487 } 8488 } 8489 8490 bool gap_secure_connection(hci_con_handle_t con_handle){ 8491 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8492 if (hci_connection == NULL) return 0; 8493 8494 switch (hci_connection->address_type){ 8495 #ifdef ENABLE_BLE 8496 case BD_ADDR_TYPE_LE_PUBLIC: 8497 case BD_ADDR_TYPE_LE_RANDOM: 8498 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8499 return hci_connection->sm_connection.sm_connection_sc != 0; 8500 #endif 8501 #ifdef ENABLE_CLASSIC 8502 case BD_ADDR_TYPE_SCO: 8503 case BD_ADDR_TYPE_ACL: 8504 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8505 #endif 8506 default: 8507 return false; 8508 } 8509 } 8510 8511 bool gap_bonded(hci_con_handle_t con_handle){ 8512 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8513 if (hci_connection == NULL) return 0; 8514 8515 #ifdef ENABLE_CLASSIC 8516 link_key_t link_key; 8517 link_key_type_t link_key_type; 8518 #endif 8519 switch (hci_connection->address_type){ 8520 #ifdef ENABLE_BLE 8521 case BD_ADDR_TYPE_LE_PUBLIC: 8522 case BD_ADDR_TYPE_LE_RANDOM: 8523 return hci_connection->sm_connection.sm_le_db_index >= 0; 8524 #endif 8525 #ifdef ENABLE_CLASSIC 8526 case BD_ADDR_TYPE_SCO: 8527 case BD_ADDR_TYPE_ACL: 8528 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8529 #endif 8530 default: 8531 return false; 8532 } 8533 } 8534 8535 #ifdef ENABLE_BLE 8536 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8537 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8538 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8539 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8540 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8541 return sm_conn->sm_connection_authorization_state; 8542 } 8543 #endif 8544 8545 #ifdef ENABLE_CLASSIC 8546 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){ 8547 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8548 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8549 conn->sniff_min_interval = sniff_min_interval; 8550 conn->sniff_max_interval = sniff_max_interval; 8551 conn->sniff_attempt = sniff_attempt; 8552 conn->sniff_timeout = sniff_timeout; 8553 hci_run(); 8554 return 0; 8555 } 8556 8557 /** 8558 * @brief Exit Sniff mode 8559 * @param con_handle 8560 @ @return 0 if ok 8561 */ 8562 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8563 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8564 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8565 conn->sniff_min_interval = 0xffff; 8566 hci_run(); 8567 return 0; 8568 } 8569 8570 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){ 8571 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8572 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8573 conn->sniff_subrating_max_latency = max_latency; 8574 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 8575 conn->sniff_subrating_min_local_timeout = min_local_timeout; 8576 hci_run(); 8577 return ERROR_CODE_SUCCESS; 8578 } 8579 8580 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){ 8581 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8582 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8583 conn->qos_service_type = service_type; 8584 conn->qos_token_rate = token_rate; 8585 conn->qos_peak_bandwidth = peak_bandwidth; 8586 conn->qos_latency = latency; 8587 conn->qos_delay_variation = delay_variation; 8588 hci_run(); 8589 return ERROR_CODE_SUCCESS; 8590 } 8591 8592 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 8593 hci_stack->new_page_scan_interval = page_scan_interval; 8594 hci_stack->new_page_scan_window = page_scan_window; 8595 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 8596 hci_run(); 8597 } 8598 8599 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 8600 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 8601 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 8602 hci_run(); 8603 } 8604 8605 void gap_set_page_timeout(uint16_t page_timeout){ 8606 hci_stack->page_timeout = page_timeout; 8607 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 8608 hci_run(); 8609 } 8610 8611 #endif 8612 8613 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 8614 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 8615 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8616 if (le_device_db_index >= le_device_db_max_count()) return; 8617 uint8_t offset = le_device_db_index >> 3; 8618 uint8_t mask = 1 << (le_device_db_index & 7); 8619 hci_stack->le_resolving_list_add_entries[offset] |= mask; 8620 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8621 // note: go back to remove entries, otherwise, a remove + add will skip the add 8622 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8623 } 8624 } 8625 8626 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 8627 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8628 if (le_device_db_index >= le_device_db_max_count()) return; 8629 uint8_t offset = le_device_db_index >> 3; 8630 uint8_t mask = 1 << (le_device_db_index & 7); 8631 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 8632 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8633 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8634 } 8635 } 8636 8637 uint8_t gap_load_resolving_list_from_le_device_db(void){ 8638 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 8639 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 8640 } 8641 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 8642 // restart le resolving list update 8643 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 8644 } 8645 return ERROR_CODE_SUCCESS; 8646 } 8647 #endif 8648 8649 #ifdef ENABLE_BLE 8650 #ifdef ENABLE_LE_CENTRAL 8651 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8652 8653 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8654 // check if already in list 8655 btstack_linked_list_iterator_t it; 8656 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8657 while (btstack_linked_list_iterator_has_next(&it)) { 8658 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 8659 if (entry->sid != advertising_sid) { 8660 continue; 8661 } 8662 if (entry->address_type != address_type) { 8663 continue; 8664 } 8665 if (memcmp(entry->address, address, 6) != 0) { 8666 continue; 8667 } 8668 // disallow if already scheduled to add 8669 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 8670 return ERROR_CODE_COMMAND_DISALLOWED; 8671 } 8672 // still on controller, but scheduled to remove -> re-add 8673 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8674 return ERROR_CODE_SUCCESS; 8675 } 8676 // alloc and add to list 8677 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 8678 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8679 entry->sid = advertising_sid; 8680 entry->address_type = address_type; 8681 (void)memcpy(entry->address, address, 6); 8682 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8683 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 8684 return ERROR_CODE_SUCCESS; 8685 } 8686 8687 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8688 btstack_linked_list_iterator_t it; 8689 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8690 while (btstack_linked_list_iterator_has_next(&it)){ 8691 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8692 if (entry->sid != advertising_sid) { 8693 continue; 8694 } 8695 if (entry->address_type != address_type) { 8696 continue; 8697 } 8698 if (memcmp(entry->address, address, 6) != 0) { 8699 continue; 8700 } 8701 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8702 // remove from controller if already present 8703 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8704 } else { 8705 // directly remove entry from whitelist 8706 btstack_linked_list_iterator_remove(&it); 8707 btstack_memory_periodic_advertiser_list_entry_free(entry); 8708 } 8709 return ERROR_CODE_SUCCESS; 8710 } 8711 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8712 } 8713 8714 static void hci_periodic_advertiser_list_clear(void){ 8715 btstack_linked_list_iterator_t it; 8716 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8717 while (btstack_linked_list_iterator_has_next(&it)){ 8718 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8719 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8720 // remove from controller if already present 8721 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8722 continue; 8723 } 8724 // directly remove entry from whitelist 8725 btstack_linked_list_iterator_remove(&it); 8726 btstack_memory_periodic_advertiser_list_entry_free(entry); 8727 } 8728 } 8729 8730 // free all entries unconditionally 8731 static void hci_periodic_advertiser_list_free(void){ 8732 btstack_linked_list_iterator_t lit; 8733 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 8734 while (btstack_linked_list_iterator_has_next(&lit)){ 8735 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 8736 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 8737 btstack_memory_periodic_advertiser_list_entry_free(entry); 8738 } 8739 } 8740 8741 uint8_t gap_periodic_advertiser_list_clear(void){ 8742 hci_periodic_advertiser_list_clear(); 8743 hci_run(); 8744 return ERROR_CODE_SUCCESS; 8745 } 8746 8747 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8748 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 8749 if (status){ 8750 return status; 8751 } 8752 hci_run(); 8753 return ERROR_CODE_SUCCESS; 8754 } 8755 8756 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8757 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 8758 if (status){ 8759 return status; 8760 } 8761 hci_run(); 8762 return ERROR_CODE_SUCCESS; 8763 } 8764 8765 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 8766 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 8767 // abort if already active 8768 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 8769 return ERROR_CODE_COMMAND_DISALLOWED; 8770 } 8771 // store request 8772 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 8773 hci_stack->le_periodic_sync_options = options; 8774 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 8775 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 8776 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 8777 hci_stack->le_periodic_sync_skip = skip; 8778 hci_stack->le_periodic_sync_timeout = sync_timeout; 8779 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 8780 8781 hci_run(); 8782 return ERROR_CODE_SUCCESS; 8783 } 8784 8785 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 8786 // abort if not requested 8787 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 8788 return ERROR_CODE_COMMAND_DISALLOWED; 8789 } 8790 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 8791 hci_run(); 8792 return ERROR_CODE_SUCCESS; 8793 } 8794 8795 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 8796 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 8797 return ERROR_CODE_COMMAND_DISALLOWED; 8798 } 8799 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 8800 hci_run(); 8801 return ERROR_CODE_SUCCESS; 8802 } 8803 8804 #endif 8805 #endif 8806 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 8807 static uint8_t hci_iso_stream_create(hci_con_handle_t con_handle, uint8_t big_handle) { 8808 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 8809 if (iso_stream == NULL){ 8810 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8811 } else { 8812 iso_stream->state = HCI_ISO_STREAM_STATE_REQUESTED; 8813 iso_stream->con_handle = con_handle; 8814 iso_stream->big_handle = big_handle; 8815 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8816 return ERROR_CODE_SUCCESS; 8817 } 8818 } 8819 8820 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 8821 btstack_linked_list_iterator_t it; 8822 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8823 while (btstack_linked_list_iterator_has_next(&it)){ 8824 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8825 if (iso_stream->con_handle == con_handle ) { 8826 return iso_stream; 8827 } 8828 } 8829 return NULL; 8830 } 8831 8832 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 8833 log_info("hci_iso_stream_finalize con_handle 0x%04x, big_handle 0x%02x", iso_stream->con_handle, iso_stream->big_handle); 8834 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8835 btstack_memory_hci_iso_stream_free(iso_stream); 8836 } 8837 8838 static void hci_iso_stream_requested_finalize(uint8_t big_handle) { 8839 btstack_linked_list_iterator_t it; 8840 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8841 while (btstack_linked_list_iterator_has_next(&it)){ 8842 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8843 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 8844 (iso_stream->big_handle == big_handle)){ 8845 btstack_linked_list_iterator_remove(&it); 8846 btstack_memory_hci_iso_stream_free(iso_stream); 8847 } 8848 } 8849 } 8850 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 8851 btstack_linked_list_iterator_t it; 8852 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8853 while (btstack_linked_list_iterator_has_next(&it)){ 8854 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8855 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 8856 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 8857 } 8858 } 8859 } 8860 8861 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 8862 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 8863 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 8864 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 8865 return (sdu_len_offset + 2 + sdu_len) == size; 8866 } 8867 8868 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 8869 if (hci_stack->iso_packet_handler == NULL) { 8870 return; 8871 } 8872 if (size < 4) { 8873 return; 8874 } 8875 8876 // parse header 8877 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 8878 uint16_t iso_data_len = little_endian_read_16(packet, 2); 8879 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 8880 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 8881 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 8882 8883 // assert packet is complete 8884 if ((iso_data_len + 4u) != size){ 8885 return; 8886 } 8887 8888 if ((pb_flag & 0x01) == 0){ 8889 if (pb_flag == 0x02){ 8890 // The ISO_Data_Load field contains a header and a complete SDU. 8891 if (hci_iso_sdu_complete(packet, size)) { 8892 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 8893 } 8894 } else { 8895 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 8896 if (iso_stream == NULL){ 8897 return; 8898 } 8899 if (size > HCI_ISO_PAYLOAD_SIZE){ 8900 return; 8901 } 8902 memcpy(iso_stream->reassembly_buffer, packet, size); 8903 // fix pb_flag 8904 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 8905 iso_stream->reassembly_pos = size; 8906 } 8907 } else { 8908 // iso_data_load contains continuation or last fragment of an SDU 8909 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 8910 if (ts_flag != 0){ 8911 return; 8912 } 8913 // append fragment 8914 if (iso_stream == NULL){ 8915 return; 8916 } 8917 if (iso_stream->reassembly_pos == 0){ 8918 return; 8919 } 8920 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 8921 // reset reassembly buffer 8922 iso_stream->reassembly_pos = 0; 8923 return; 8924 } 8925 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 8926 iso_stream->reassembly_pos += iso_data_len; 8927 8928 // deliver if last fragment and SDU complete 8929 if (pb_flag == 0x03){ 8930 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 8931 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 8932 } 8933 iso_stream->reassembly_pos = 0; 8934 } 8935 } 8936 } 8937 8938 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 8939 uint8_t event [6 + (MAX_NR_BIS * 2)]; 8940 uint16_t pos = 0; 8941 event[pos++] = HCI_EVENT_META_GAP; 8942 event[pos++] = 4 + (2 * big->num_bis); 8943 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 8944 event[pos++] = status; 8945 event[pos++] = big->big_handle; 8946 event[pos++] = big->num_bis; 8947 uint8_t i; 8948 for (i=0;i<big->num_bis;i++){ 8949 little_endian_store_16(event, pos, big->bis_con_handles[i]); 8950 pos += 2; 8951 } 8952 hci_emit_event(event, pos, 0); 8953 } 8954 8955 static void hci_emit_big_terminated(const le_audio_big_t * big){ 8956 uint8_t event [4]; 8957 uint16_t pos = 0; 8958 event[pos++] = HCI_EVENT_META_GAP; 8959 event[pos++] = 2; 8960 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 8961 event[pos++] = big->big_handle; 8962 hci_emit_event(event, pos, 0); 8963 } 8964 8965 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 8966 uint8_t event [6 + (MAX_NR_BIS * 2)]; 8967 uint16_t pos = 0; 8968 event[pos++] = HCI_EVENT_META_GAP; 8969 event[pos++] = 4; 8970 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 8971 event[pos++] = status; 8972 event[pos++] = big_sync->big_handle; 8973 event[pos++] = big_sync->num_bis; 8974 uint8_t i; 8975 for (i=0;i<big_sync->num_bis;i++){ 8976 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 8977 pos += 2; 8978 } 8979 hci_emit_event(event, pos, 0); 8980 } 8981 8982 static void hci_emit_big_sync_stopped(const le_audio_big_sync_t * big_sync){ 8983 uint8_t event [4]; 8984 uint16_t pos = 0; 8985 event[pos++] = HCI_EVENT_META_GAP; 8986 event[pos++] = 2; 8987 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 8988 event[pos++] = big_sync->big_handle; 8989 hci_emit_event(event, pos, 0); 8990 } 8991 8992 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 8993 uint8_t event[6]; 8994 uint16_t pos = 0; 8995 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 8996 event[pos++] = sizeof(event) - 2; 8997 event[pos++] = big->big_handle; 8998 event[pos++] = bis_index; 8999 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9000 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9001 } 9002 9003 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9004 btstack_linked_list_iterator_t it; 9005 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9006 while (btstack_linked_list_iterator_has_next(&it)){ 9007 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9008 if ( big->big_handle == big_handle ) { 9009 return big; 9010 } 9011 } 9012 return NULL; 9013 } 9014 9015 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9016 btstack_linked_list_iterator_t it; 9017 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9018 while (btstack_linked_list_iterator_has_next(&it)){ 9019 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9020 if ( big_sync->big_handle == big_handle ) { 9021 return big_sync; 9022 } 9023 } 9024 return NULL; 9025 } 9026 9027 static void hci_iso_notify_can_send_now(void){ 9028 btstack_linked_list_iterator_t it; 9029 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9030 while (btstack_linked_list_iterator_has_next(&it)){ 9031 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9032 if (big->can_send_now_requested){ 9033 // check if no outgoing iso packets pending 9034 uint8_t i; 9035 bool can_send = true; 9036 for (i=0;i<big->num_bis;i++){ 9037 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9038 if ((iso_stream == NULL) || (iso_stream->num_packets_sent > 0)){ 9039 can_send = false; 9040 break; 9041 } 9042 } 9043 if (can_send){ 9044 // propagate can send now to individual streams 9045 big->can_send_now_requested = false; 9046 for (i=0;i<big->num_bis;i++){ 9047 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9048 iso_stream->emit_ready_to_send = true; 9049 } 9050 } 9051 } 9052 } 9053 9054 if (hci_stack->hci_packet_buffer_reserved) return; 9055 9056 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9057 while (btstack_linked_list_iterator_has_next(&it)){ 9058 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9059 // report bis ready 9060 uint8_t i; 9061 bool can_send = true; 9062 for (i=0;i<big->num_bis;i++){ 9063 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9064 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9065 iso_stream->emit_ready_to_send = false; 9066 hci_emit_bis_can_send_now(big, i); 9067 break; 9068 } 9069 } 9070 } 9071 } 9072 9073 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9074 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9075 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9076 } 9077 if (big_params->num_bis == 0){ 9078 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9079 } 9080 if (big_params->num_bis > MAX_NR_BIS){ 9081 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9082 } 9083 9084 // reserve ISO Streams 9085 uint8_t i; 9086 uint8_t status = ERROR_CODE_SUCCESS; 9087 for (i=0;i<big_params->num_bis;i++){ 9088 status = hci_iso_stream_create(HCI_CON_HANDLE_INVALID, big_params->big_handle); 9089 if (status != ERROR_CODE_SUCCESS) { 9090 break; 9091 } 9092 } 9093 9094 // free structs on error 9095 if (status != ERROR_CODE_SUCCESS){ 9096 hci_iso_stream_requested_finalize(big_params->big_handle); 9097 return status; 9098 } 9099 9100 le_audio_big_t * big = storage; 9101 big->big_handle = big_params->big_handle; 9102 big->params = big_params; 9103 big->state = LE_AUDIO_BIG_STATE_CREATE; 9104 big->num_bis = big_params->num_bis; 9105 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9106 9107 hci_run(); 9108 9109 return ERROR_CODE_SUCCESS; 9110 } 9111 9112 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9113 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9114 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9115 } 9116 if (big_sync_params->num_bis == 0){ 9117 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9118 } 9119 if (big_sync_params->num_bis > MAX_NR_BIS){ 9120 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9121 } 9122 9123 le_audio_big_sync_t * big_sync = storage; 9124 big_sync->big_handle = big_sync_params->big_handle; 9125 big_sync->params = big_sync_params; 9126 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9127 big_sync->num_bis = big_sync_params->num_bis; 9128 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9129 9130 hci_run(); 9131 9132 return ERROR_CODE_SUCCESS; 9133 } 9134 9135 uint8_t gap_big_terminate(uint8_t big_handle){ 9136 le_audio_big_t * big = hci_big_for_handle(big_handle); 9137 if (big == NULL){ 9138 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9139 } 9140 switch (big->state){ 9141 case LE_AUDIO_BIG_STATE_CREATE: 9142 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9143 hci_emit_big_terminated(big); 9144 break; 9145 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9146 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9147 break; 9148 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9149 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9150 case LE_AUDIO_BIG_STATE_ACTIVE: 9151 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9152 hci_run(); 9153 break; 9154 default: 9155 return ERROR_CODE_COMMAND_DISALLOWED; 9156 } 9157 return ERROR_CODE_SUCCESS; 9158 } 9159 9160 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9161 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9162 if (big_sync == NULL){ 9163 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9164 } 9165 switch (big_sync->state){ 9166 case LE_AUDIO_BIG_STATE_CREATE: 9167 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9168 hci_emit_big_sync_stopped(big_sync); 9169 break; 9170 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9171 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9172 break; 9173 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9174 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9175 case LE_AUDIO_BIG_STATE_ACTIVE: 9176 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9177 hci_run(); 9178 break; 9179 default: 9180 return ERROR_CODE_COMMAND_DISALLOWED; 9181 } 9182 return ERROR_CODE_SUCCESS; 9183 } 9184 9185 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9186 le_audio_big_t * big = hci_big_for_handle(big_handle); 9187 if (big == NULL){ 9188 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9189 } 9190 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9191 return ERROR_CODE_COMMAND_DISALLOWED; 9192 } 9193 big->can_send_now_requested = true; 9194 hci_iso_notify_can_send_now(); 9195 return ERROR_CODE_SUCCESS; 9196 } 9197 #endif 9198 #endif /* ENABLE_BLE */ 9199 9200 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9201 void hci_setup_test_connections_fuzz(void){ 9202 hci_connection_t * conn; 9203 9204 // default address: 66:55:44:33:00:01 9205 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9206 9207 // setup Controller info 9208 hci_stack->num_cmd_packets = 255; 9209 hci_stack->acl_packets_total_num = 255; 9210 9211 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9212 addr[5] = 0x01; 9213 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9214 conn->con_handle = addr[5]; 9215 conn->role = HCI_ROLE_SLAVE; 9216 conn->state = RECEIVED_CONNECTION_REQUEST; 9217 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9218 9219 // setup incoming Classic SCO connection with con handle 0x0002 9220 addr[5] = 0x02; 9221 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9222 conn->con_handle = addr[5]; 9223 conn->role = HCI_ROLE_SLAVE; 9224 conn->state = RECEIVED_CONNECTION_REQUEST; 9225 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9226 9227 // setup ready Classic ACL connection with con handle 0x0003 9228 addr[5] = 0x03; 9229 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9230 conn->con_handle = addr[5]; 9231 conn->role = HCI_ROLE_SLAVE; 9232 conn->state = OPEN; 9233 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9234 9235 // setup ready Classic SCO connection with con handle 0x0004 9236 addr[5] = 0x04; 9237 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9238 conn->con_handle = addr[5]; 9239 conn->role = HCI_ROLE_SLAVE; 9240 conn->state = OPEN; 9241 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9242 9243 // setup ready LE ACL connection with con handle 0x005 and public address 9244 addr[5] = 0x05; 9245 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9246 conn->con_handle = addr[5]; 9247 conn->role = HCI_ROLE_SLAVE; 9248 conn->state = OPEN; 9249 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9250 conn->sm_connection.sm_connection_encrypted = 1; 9251 } 9252 9253 void hci_free_connections_fuzz(void){ 9254 btstack_linked_list_iterator_t it; 9255 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9256 while (btstack_linked_list_iterator_has_next(&it)){ 9257 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9258 btstack_linked_list_iterator_remove(&it); 9259 btstack_memory_hci_connection_free(con); 9260 } 9261 } 9262 void hci_simulate_working_fuzz(void){ 9263 hci_stack->le_scanning_param_update = false; 9264 hci_init_done(); 9265 hci_stack->num_cmd_packets = 255; 9266 } 9267 #endif 9268