1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static bool hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 static bool hci_run_general_gap_le(void); 227 static void gap_privacy_clients_handle_ready(void); 228 static void gap_privacy_clients_notify(bd_addr_t new_random_address); 229 #ifdef ENABLE_LE_CENTRAL 230 // called from test/ble_client/advertising_data_parser.c 231 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 232 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 233 static hci_connection_t * gap_get_outgoing_le_connection(void); 234 static void hci_le_scan_stop(void); 235 #endif 236 #ifdef ENABLE_LE_PERIPHERAL 237 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 238 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 239 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 240 #endif /* ENABLE_LE_PERIPHERAL */ 241 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 242 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 243 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 244 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 245 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 246 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 247 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 248 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 249 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 250 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 251 static void hci_iso_notify_can_send_now(void); 252 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 253 static void hci_emit_big_terminated(const le_audio_big_t * big); 254 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 255 static void hci_emit_big_sync_stopped(uint8_t big_handle); 256 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 257 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 258 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 259 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 260 #endif /* ENABLE_BLE */ 261 262 // the STACK is here 263 #ifndef HAVE_MALLOC 264 static hci_stack_t hci_stack_static; 265 #endif 266 static hci_stack_t * hci_stack = NULL; 267 268 #ifdef ENABLE_CLASSIC 269 // default name 270 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 271 272 // test helper 273 static uint8_t disable_l2cap_timeouts = 0; 274 #endif 275 276 // reset connection state on create and on reconnect 277 // don't overwrite addr, con handle, role 278 static void hci_connection_init(hci_connection_t * conn){ 279 conn->authentication_flags = AUTH_FLAG_NONE; 280 conn->bonding_flags = 0; 281 conn->requested_security_level = LEVEL_0; 282 conn->link_key_type = INVALID_LINK_KEY; 283 #ifdef ENABLE_CLASSIC 284 conn->request_role = HCI_ROLE_INVALID; 285 conn->sniff_subrating_max_latency = 0xffff; 286 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 287 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 288 btstack_run_loop_set_timer_context(&conn->timeout, conn); 289 hci_connection_timestamp(conn); 290 #endif 291 conn->acl_recombination_length = 0; 292 conn->acl_recombination_pos = 0; 293 conn->num_packets_sent = 0; 294 295 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 296 #ifdef ENABLE_BLE 297 conn->le_phy_update_all_phys = 0xff; 298 #endif 299 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 300 conn->le_max_tx_octets = 27; 301 #endif 302 #ifdef ENABLE_CLASSIC_PAIRING_OOB 303 conn->classic_oob_c_192 = NULL; 304 conn->classic_oob_r_192 = NULL; 305 conn->classic_oob_c_256 = NULL; 306 conn->classic_oob_r_256 = NULL; 307 #endif 308 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 309 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 310 conn->le_past_advertising_handle = 0xff; 311 #endif 312 } 313 314 /** 315 * create connection for given address 316 * 317 * @return connection OR NULL, if no memory left 318 */ 319 static hci_connection_t * 320 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 321 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 322 323 hci_connection_t * conn = btstack_memory_hci_connection_get(); 324 if (!conn) return NULL; 325 hci_connection_init(conn); 326 327 bd_addr_copy(conn->address, addr); 328 conn->address_type = addr_type; 329 conn->con_handle = HCI_CON_HANDLE_INVALID; 330 conn->role = role; 331 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 332 333 return conn; 334 } 335 336 337 /** 338 * get le connection parameter range 339 * 340 * @return le connection parameter range struct 341 */ 342 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 343 *range = hci_stack->le_connection_parameter_range; 344 } 345 346 /** 347 * set le connection parameter range 348 * 349 */ 350 351 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 352 hci_stack->le_connection_parameter_range = *range; 353 } 354 355 /** 356 * @brief Test if connection parameters are inside in existing rage 357 * @param conn_interval_min (unit: 1.25ms) 358 * @param conn_interval_max (unit: 1.25ms) 359 * @param conn_latency 360 * @param supervision_timeout (unit: 10ms) 361 * @return 1 if included 362 */ 363 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){ 364 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 365 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 366 367 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 368 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 369 370 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 371 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 372 373 return 1; 374 } 375 376 /** 377 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 378 * @note: default: 1 379 * @param max_peripheral_connections 380 */ 381 #ifdef ENABLE_LE_PERIPHERAL 382 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 383 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 384 } 385 #endif 386 387 /** 388 * get hci connections iterator 389 * 390 * @return hci connections iterator 391 */ 392 393 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 394 btstack_linked_list_iterator_init(it, &hci_stack->connections); 395 } 396 397 /** 398 * get connection for a given handle 399 * 400 * @return connection OR NULL, if not found 401 */ 402 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 403 btstack_linked_list_iterator_t it; 404 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 405 while (btstack_linked_list_iterator_has_next(&it)){ 406 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 407 if ( item->con_handle == con_handle ) { 408 return item; 409 } 410 } 411 return NULL; 412 } 413 414 /** 415 * get connection for given address 416 * 417 * @return connection OR NULL, if not found 418 */ 419 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 420 btstack_linked_list_iterator_t it; 421 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 422 while (btstack_linked_list_iterator_has_next(&it)){ 423 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 424 if (connection->address_type != addr_type) continue; 425 if (memcmp(addr, connection->address, 6) != 0) continue; 426 return connection; 427 } 428 return NULL; 429 } 430 431 #ifdef ENABLE_CLASSIC 432 433 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 434 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 435 } 436 437 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 438 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 439 } 440 441 #ifdef ENABLE_SCO_OVER_HCI 442 static int hci_number_sco_connections(void){ 443 int connections = 0; 444 btstack_linked_list_iterator_t it; 445 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 446 while (btstack_linked_list_iterator_has_next(&it)){ 447 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 448 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 449 connections++; 450 } 451 return connections; 452 } 453 #endif 454 455 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 456 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 457 #ifdef HAVE_EMBEDDED_TICK 458 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 459 // connections might be timed out 460 hci_emit_l2cap_check_timeout(connection); 461 } 462 #else 463 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 464 // connections might be timed out 465 hci_emit_l2cap_check_timeout(connection); 466 } 467 #endif 468 } 469 470 static void hci_connection_timestamp(hci_connection_t *connection){ 471 #ifdef HAVE_EMBEDDED_TICK 472 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 473 #else 474 connection->timestamp = btstack_run_loop_get_time_ms(); 475 #endif 476 } 477 478 /** 479 * add authentication flags and reset timer 480 * @note: assumes classic connection 481 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 482 */ 483 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 484 bd_addr_t addr; 485 reverse_bd_addr(bd_addr, addr); 486 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 487 if (conn) { 488 connectionSetAuthenticationFlags(conn, flags); 489 hci_connection_timestamp(conn); 490 } 491 } 492 493 static bool hci_pairing_active(hci_connection_t * hci_connection){ 494 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 495 } 496 497 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 498 if (hci_pairing_active(hci_connection)) return; 499 if (ssp){ 500 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 501 } else { 502 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 503 } 504 // if we are initiator, we have sent an HCI Authenticate Request 505 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 506 507 // if we are responder, use minimal service security level as required level 508 if (!initiator){ 509 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); 510 } 511 512 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 513 514 uint8_t event[12]; 515 event[0] = GAP_EVENT_PAIRING_STARTED; 516 event[1] = 10; 517 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 518 reverse_bd_addr(hci_connection->address, &event[4]); 519 event[10] = (uint8_t) ssp; 520 event[11] = (uint8_t) initiator; 521 hci_emit_event(event, sizeof(event), 1); 522 } 523 524 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 525 hci_connection->requested_security_level = LEVEL_0; 526 if (!hci_pairing_active(hci_connection)) return; 527 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 528 #ifdef ENABLE_CLASSIC_PAIRING_OOB 529 hci_connection->classic_oob_c_192 = NULL; 530 hci_connection->classic_oob_r_192 = NULL; 531 hci_connection->classic_oob_c_256 = NULL; 532 hci_connection->classic_oob_r_256 = NULL; 533 #endif 534 log_info("pairing complete, status %02x", status); 535 536 uint8_t event[11]; 537 event[0] = GAP_EVENT_PAIRING_COMPLETE; 538 event[1] = 9; 539 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 540 reverse_bd_addr(hci_connection->address, &event[4]); 541 event[10] = status; 542 hci_emit_event(event, sizeof(event), 1); 543 544 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 545 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 546 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 547 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 548 hci_connection->bonding_status = status; 549 } 550 } 551 552 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 553 hci_connection_t * conn = hci_connection_for_handle(handle); 554 if (!conn) return false; 555 return hci_pairing_active(conn); 556 } 557 558 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 559 if (!hci_stack->link_key_db) return; 560 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 561 hci_stack->link_key_db->delete_link_key(addr); 562 } 563 564 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 565 if (!hci_stack->link_key_db) return; 566 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 567 hci_stack->link_key_db->put_link_key(addr, link_key, type); 568 } 569 570 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 571 if (!hci_stack->link_key_db) return false; 572 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 573 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 574 return result; 575 } 576 577 void gap_delete_all_link_keys(void){ 578 bd_addr_t addr; 579 link_key_t link_key; 580 link_key_type_t type; 581 btstack_link_key_iterator_t it; 582 int ok = gap_link_key_iterator_init(&it); 583 if (!ok) { 584 log_error("could not initialize iterator"); 585 return; 586 } 587 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 588 gap_drop_link_key_for_bd_addr(addr); 589 } 590 gap_link_key_iterator_done(&it); 591 } 592 593 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 594 if (!hci_stack->link_key_db) return 0; 595 if (!hci_stack->link_key_db->iterator_init) return 0; 596 return hci_stack->link_key_db->iterator_init(it); 597 } 598 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){ 599 if (!hci_stack->link_key_db) return 0; 600 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 601 } 602 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 603 if (!hci_stack->link_key_db) return; 604 hci_stack->link_key_db->iterator_done(it); 605 } 606 #endif 607 608 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 609 switch (address_type){ 610 case BD_ADDR_TYPE_LE_PUBLIC: 611 case BD_ADDR_TYPE_LE_RANDOM: 612 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 613 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 614 return true; 615 default: 616 return false; 617 } 618 } 619 620 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 621 switch (address_type){ 622 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 623 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 624 return true; 625 default: 626 return false; 627 } 628 } 629 630 static bool hci_is_le_connection(hci_connection_t * connection){ 631 return hci_is_le_connection_type(connection->address_type); 632 } 633 634 /** 635 * count connections 636 */ 637 static int nr_hci_connections(void){ 638 int count = 0; 639 btstack_linked_item_t *it; 640 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 641 count++; 642 } 643 return count; 644 } 645 646 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 647 648 unsigned int num_packets_sent_classic = 0; 649 unsigned int num_packets_sent_le = 0; 650 651 btstack_linked_item_t *it; 652 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 653 hci_connection_t * connection = (hci_connection_t *) it; 654 if (hci_is_le_connection(connection)){ 655 num_packets_sent_le += connection->num_packets_sent; 656 } 657 if (connection->address_type == BD_ADDR_TYPE_ACL){ 658 num_packets_sent_classic += connection->num_packets_sent; 659 } 660 } 661 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 662 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 663 int free_slots_le = 0; 664 665 if (free_slots_classic < 0){ 666 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); 667 return 0; 668 } 669 670 if (hci_stack->le_acl_packets_total_num){ 671 // if we have LE slots, they are used 672 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 673 if (free_slots_le < 0){ 674 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); 675 return 0; 676 } 677 } else { 678 // otherwise, classic slots are used for LE, too 679 free_slots_classic -= num_packets_sent_le; 680 if (free_slots_classic < 0){ 681 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); 682 return 0; 683 } 684 } 685 686 switch (address_type){ 687 case BD_ADDR_TYPE_UNKNOWN: 688 log_error("hci_number_free_acl_slots: unknown address type"); 689 return 0; 690 691 case BD_ADDR_TYPE_ACL: 692 return (uint16_t) free_slots_classic; 693 694 default: 695 if (hci_stack->le_acl_packets_total_num > 0){ 696 return (uint16_t) free_slots_le; 697 } 698 return (uint16_t) free_slots_classic; 699 } 700 } 701 702 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 703 // get connection type 704 hci_connection_t * connection = hci_connection_for_handle(con_handle); 705 if (!connection){ 706 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 707 return 0; 708 } 709 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 710 } 711 712 #ifdef ENABLE_CLASSIC 713 static int hci_number_free_sco_slots(void){ 714 unsigned int num_sco_packets_sent = 0; 715 btstack_linked_item_t *it; 716 if (hci_stack->synchronous_flow_control_enabled){ 717 // explicit flow control 718 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 719 hci_connection_t * connection = (hci_connection_t *) it; 720 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 721 num_sco_packets_sent += connection->num_packets_sent; 722 } 723 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 724 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 725 return 0; 726 } 727 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 728 } else { 729 // implicit flow control 730 int num_ready = 0; 731 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 732 hci_connection_t * connection = (hci_connection_t *) it; 733 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 734 if (connection->sco_tx_ready == 0) continue; 735 num_ready++; 736 } 737 return num_ready; 738 } 739 } 740 #endif 741 742 // only used to send HCI Host Number Completed Packets 743 static int hci_can_send_comand_packet_transport(void){ 744 if (hci_stack->hci_packet_buffer_reserved) return 0; 745 746 // check for async hci transport implementations 747 if (hci_stack->hci_transport->can_send_packet_now){ 748 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 749 return 0; 750 } 751 } 752 return 1; 753 } 754 755 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 756 bool hci_can_send_command_packet_now(void){ 757 if (hci_can_send_comand_packet_transport() == 0) return false; 758 return hci_stack->num_cmd_packets > 0u; 759 } 760 761 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 762 // check for async hci transport implementations 763 if (!hci_stack->hci_transport->can_send_packet_now) return true; 764 return hci_stack->hci_transport->can_send_packet_now(packet_type); 765 } 766 767 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 768 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 769 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 770 } 771 772 bool hci_can_send_acl_le_packet_now(void){ 773 if (hci_stack->hci_packet_buffer_reserved) return false; 774 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 775 } 776 777 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 778 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 779 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 780 } 781 782 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 783 if (hci_stack->hci_packet_buffer_reserved) return false; 784 return hci_can_send_prepared_acl_packet_now(con_handle); 785 } 786 787 #ifdef ENABLE_CLASSIC 788 bool hci_can_send_acl_classic_packet_now(void){ 789 if (hci_stack->hci_packet_buffer_reserved) return false; 790 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 791 } 792 793 bool hci_can_send_prepared_sco_packet_now(void){ 794 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 795 if (hci_have_usb_transport()){ 796 return hci_stack->sco_can_send_now; 797 } else { 798 return hci_number_free_sco_slots() > 0; 799 } 800 } 801 802 bool hci_can_send_sco_packet_now(void){ 803 if (hci_stack->hci_packet_buffer_reserved) return false; 804 return hci_can_send_prepared_sco_packet_now(); 805 } 806 807 void hci_request_sco_can_send_now_event(void){ 808 hci_stack->sco_waiting_for_can_send_now = 1; 809 hci_notify_if_sco_can_send_now(); 810 } 811 #endif 812 813 // used for internal checks in l2cap.c 814 bool hci_is_packet_buffer_reserved(void){ 815 return hci_stack->hci_packet_buffer_reserved; 816 } 817 818 // reserves outgoing packet buffer. 819 // @return 1 if successful 820 bool hci_reserve_packet_buffer(void){ 821 if (hci_stack->hci_packet_buffer_reserved) { 822 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 823 return false; 824 } 825 hci_stack->hci_packet_buffer_reserved = true; 826 return true; 827 } 828 829 void hci_release_packet_buffer(void){ 830 hci_stack->hci_packet_buffer_reserved = false; 831 } 832 833 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 834 static int hci_transport_synchronous(void){ 835 return hci_stack->hci_transport->can_send_packet_now == NULL; 836 } 837 838 // used for debugging 839 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 840 static void hci_controller_dump_packets(void){ 841 // format: "{handle:04x}:{count:02d} " 842 char summaries[3][7 * 8 + 1]; 843 uint16_t totals[3]; 844 uint8_t index; 845 for (index = 0 ; index < 3 ; index++){ 846 summaries[index][0] = 0; 847 totals[index] = 0; 848 } 849 btstack_linked_item_t *it; 850 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 851 hci_connection_t * connection = (hci_connection_t *) it; 852 switch (connection->address_type){ 853 case BD_ADDR_TYPE_ACL: 854 index = 0; 855 break; 856 case BD_ADDR_TYPE_SCO: 857 index = 2; 858 break; 859 default: 860 index = 1; 861 break; 862 } 863 totals[index] += connection->num_packets_sent; 864 char item_text[10]; 865 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 866 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 867 } 868 for (index = 0 ; index < 3 ; index++){ 869 if (summaries[index][0] == 0){ 870 summaries[index][0] = '-'; 871 summaries[index][1] = 0; 872 } 873 } 874 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 875 } 876 #endif 877 878 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 879 880 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 881 882 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 883 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 884 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 885 max_acl_data_packet_length = hci_stack->le_data_packets_length; 886 } 887 888 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 889 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 890 max_acl_data_packet_length = connection->le_max_tx_octets; 891 } 892 #endif 893 894 log_debug("hci_send_acl_packet_fragments entered"); 895 896 uint8_t status = ERROR_CODE_SUCCESS; 897 // multiple packets could be send on a synchronous HCI transport 898 while (true){ 899 900 log_debug("hci_send_acl_packet_fragments loop entered"); 901 902 // get current data 903 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 904 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 905 bool more_fragments = false; 906 907 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 908 if (current_acl_data_packet_length > max_acl_data_packet_length){ 909 more_fragments = true; 910 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 911 } 912 913 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 914 if (acl_header_pos > 0u){ 915 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 916 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 917 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 918 } 919 920 // update header len 921 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 922 923 // count packet 924 connection->num_packets_sent++; 925 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 926 927 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 928 if (more_fragments){ 929 // update start of next fragment to send 930 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 931 } else { 932 // done 933 hci_stack->acl_fragmentation_pos = 0; 934 hci_stack->acl_fragmentation_total_size = 0; 935 } 936 937 // send packet 938 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 939 const int size = current_acl_data_packet_length + 4; 940 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 941 hci_stack->acl_fragmentation_tx_active = 1; 942 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 943 if (err != 0){ 944 // no error from HCI Transport expected 945 status = ERROR_CODE_HARDWARE_FAILURE; 946 } 947 948 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 949 hci_controller_dump_packets(); 950 #endif 951 952 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 953 954 // done yet? 955 if (!more_fragments) break; 956 957 // can send more? 958 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 959 } 960 961 log_debug("hci_send_acl_packet_fragments loop over"); 962 963 // release buffer now for synchronous transport 964 if (hci_transport_synchronous()){ 965 hci_stack->acl_fragmentation_tx_active = 0; 966 hci_release_packet_buffer(); 967 hci_emit_transport_packet_sent(); 968 } 969 970 return status; 971 } 972 973 // pre: caller has reserved the packet buffer 974 uint8_t hci_send_acl_packet_buffer(int size){ 975 btstack_assert(hci_stack->hci_packet_buffer_reserved); 976 977 uint8_t * packet = hci_stack->hci_packet_buffer; 978 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 979 980 hci_connection_t *connection = hci_connection_for_handle( con_handle); 981 if (!connection) { 982 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 983 hci_release_packet_buffer(); 984 hci_emit_transport_packet_sent(); 985 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 986 } 987 988 // check for free places on Bluetooth module 989 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 990 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 991 hci_release_packet_buffer(); 992 hci_emit_transport_packet_sent(); 993 return BTSTACK_ACL_BUFFERS_FULL; 994 } 995 996 #ifdef ENABLE_CLASSIC 997 hci_connection_timestamp(connection); 998 #endif 999 1000 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 1001 1002 // setup data 1003 hci_stack->acl_fragmentation_total_size = size; 1004 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1005 1006 return hci_send_acl_packet_fragments(connection); 1007 } 1008 1009 #ifdef ENABLE_CLASSIC 1010 // pre: caller has reserved the packet buffer 1011 uint8_t hci_send_sco_packet_buffer(int size){ 1012 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1013 1014 uint8_t * packet = hci_stack->hci_packet_buffer; 1015 1016 // skip checks in loopback mode 1017 if (!hci_stack->loopback_mode){ 1018 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1019 1020 // check for free places on Bluetooth module 1021 if (!hci_can_send_prepared_sco_packet_now()) { 1022 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1023 hci_release_packet_buffer(); 1024 hci_emit_transport_packet_sent(); 1025 return BTSTACK_ACL_BUFFERS_FULL; 1026 } 1027 1028 // track send packet in connection struct 1029 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1030 if (!connection) { 1031 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1032 hci_release_packet_buffer(); 1033 hci_emit_transport_packet_sent(); 1034 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1035 } 1036 1037 if (hci_have_usb_transport()){ 1038 // token used 1039 hci_stack->sco_can_send_now = false; 1040 } else { 1041 if (hci_stack->synchronous_flow_control_enabled){ 1042 connection->num_packets_sent++; 1043 } else { 1044 connection->sco_tx_ready--; 1045 } 1046 } 1047 } 1048 1049 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1050 1051 #ifdef HAVE_SCO_TRANSPORT 1052 hci_stack->sco_transport->send_packet(packet, size); 1053 hci_release_packet_buffer(); 1054 hci_emit_transport_packet_sent(); 1055 1056 return 0; 1057 #else 1058 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1059 if (hci_transport_synchronous()){ 1060 hci_release_packet_buffer(); 1061 hci_emit_transport_packet_sent(); 1062 } 1063 1064 if (err != 0){ 1065 return ERROR_CODE_HARDWARE_FAILURE; 1066 } 1067 return ERROR_CODE_SUCCESS; 1068 #endif 1069 } 1070 #endif 1071 1072 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1073 static uint8_t hci_send_iso_packet_fragments(void){ 1074 1075 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1076 uint8_t status = ERROR_CODE_SUCCESS; 1077 // multiple packets could be send on a synchronous HCI transport 1078 while (true){ 1079 1080 // get current data 1081 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1082 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1083 bool more_fragments = false; 1084 1085 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1086 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1087 more_fragments = true; 1088 current_iso_data_packet_length = max_iso_data_packet_length; 1089 } 1090 1091 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1092 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1093 uint8_t pb_flags; 1094 if (iso_header_pos == 0u){ 1095 // first fragment, keep TS field 1096 pb_flags = more_fragments ? 0x00 : 0x02; 1097 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1098 } else { 1099 // later fragment, drop TS field 1100 pb_flags = more_fragments ? 0x01 : 0x03; 1101 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1102 } 1103 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1104 1105 // update header len 1106 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1107 1108 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1109 if (more_fragments){ 1110 // update start of next fragment to send 1111 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1112 } else { 1113 // done 1114 hci_stack->iso_fragmentation_pos = 0; 1115 hci_stack->iso_fragmentation_total_size = 0; 1116 } 1117 1118 // send packet 1119 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1120 const int size = current_iso_data_packet_length + 4; 1121 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1122 hci_stack->iso_fragmentation_tx_active = true; 1123 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1124 if (err != 0){ 1125 // no error from HCI Transport expected 1126 status = ERROR_CODE_HARDWARE_FAILURE; 1127 } 1128 1129 // done yet? 1130 if (!more_fragments) break; 1131 1132 // can send more? 1133 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1134 } 1135 1136 // release buffer now for synchronous transport 1137 if (hci_transport_synchronous()){ 1138 hci_stack->iso_fragmentation_tx_active = false; 1139 hci_release_packet_buffer(); 1140 hci_emit_transport_packet_sent(); 1141 } 1142 1143 return status; 1144 } 1145 1146 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1147 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1148 1149 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1150 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1151 if (iso_stream == NULL){ 1152 hci_release_packet_buffer(); 1153 hci_iso_notify_can_send_now(); 1154 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1155 } 1156 1157 // TODO: check for space on controller 1158 1159 // skip iso packets if needed 1160 if (iso_stream->num_packets_to_skip > 0){ 1161 iso_stream->num_packets_to_skip--; 1162 // pretend it was processed and trigger next one 1163 hci_release_packet_buffer(); 1164 hci_iso_notify_can_send_now(); 1165 return ERROR_CODE_SUCCESS; 1166 } 1167 1168 // track outgoing packet sent 1169 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1170 iso_stream->num_packets_sent++; 1171 1172 // setup data 1173 hci_stack->iso_fragmentation_total_size = size; 1174 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1175 1176 return hci_send_iso_packet_fragments(); 1177 } 1178 #endif 1179 1180 static void acl_handler(uint8_t *packet, uint16_t size){ 1181 1182 // get info 1183 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1184 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1185 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1186 uint16_t acl_length = READ_ACL_LENGTH(packet); 1187 1188 // ignore non-registered handle 1189 if (!conn){ 1190 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1191 return; 1192 } 1193 1194 // assert packet is complete 1195 if ((acl_length + 4u) != size){ 1196 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1197 return; 1198 } 1199 1200 #ifdef ENABLE_CLASSIC 1201 // update idle timestamp 1202 hci_connection_timestamp(conn); 1203 #endif 1204 1205 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1206 hci_stack->host_completed_packets = 1; 1207 conn->num_packets_completed++; 1208 #endif 1209 1210 // handle different packet types 1211 switch (acl_flags & 0x03u) { 1212 1213 case 0x01: // continuation fragment 1214 1215 // sanity checks 1216 if (conn->acl_recombination_pos == 0u) { 1217 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1218 return; 1219 } 1220 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1221 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1222 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1223 conn->acl_recombination_pos = 0; 1224 return; 1225 } 1226 1227 // append fragment payload (header already stored) 1228 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1229 &packet[4], acl_length); 1230 conn->acl_recombination_pos += acl_length; 1231 1232 // forward complete L2CAP packet if complete. 1233 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1234 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1235 // reset recombination buffer 1236 conn->acl_recombination_length = 0; 1237 conn->acl_recombination_pos = 0; 1238 } 1239 break; 1240 1241 case 0x02: { // first fragment 1242 1243 // sanity check 1244 if (conn->acl_recombination_pos) { 1245 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1246 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1247 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1248 } 1249 conn->acl_recombination_pos = 0; 1250 } 1251 1252 // peek into L2CAP packet! 1253 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1254 1255 // compare fragment size to L2CAP packet size 1256 if (acl_length >= (l2cap_length + 4u)){ 1257 // forward fragment as L2CAP packet 1258 hci_emit_acl_packet(packet, acl_length + 4u); 1259 } else { 1260 1261 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1262 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1263 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1264 return; 1265 } 1266 1267 // store first fragment and tweak acl length for complete package 1268 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1269 packet, acl_length + 4u); 1270 conn->acl_recombination_pos = acl_length + 4u; 1271 conn->acl_recombination_length = l2cap_length; 1272 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1273 } 1274 break; 1275 1276 } 1277 default: 1278 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1279 return; 1280 } 1281 1282 // execute main loop 1283 hci_run(); 1284 } 1285 1286 static void hci_connection_stop_timer(hci_connection_t * conn){ 1287 btstack_run_loop_remove_timer(&conn->timeout); 1288 #ifdef ENABLE_CLASSIC 1289 btstack_run_loop_remove_timer(&conn->timeout_sco); 1290 #endif 1291 } 1292 1293 static void hci_shutdown_connection(hci_connection_t *conn){ 1294 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1295 1296 #ifdef ENABLE_CLASSIC 1297 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1298 bd_addr_type_t addr_type = conn->address_type; 1299 #endif 1300 #ifdef HAVE_SCO_TRANSPORT 1301 hci_con_handle_t con_handle = conn->con_handle; 1302 #endif 1303 #endif 1304 1305 hci_connection_stop_timer(conn); 1306 1307 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1308 btstack_memory_hci_connection_free( conn ); 1309 1310 // now it's gone 1311 hci_emit_nr_connections_changed(); 1312 1313 #ifdef ENABLE_CLASSIC 1314 #ifdef ENABLE_SCO_OVER_HCI 1315 // update SCO 1316 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1317 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1318 } 1319 #endif 1320 #ifdef HAVE_SCO_TRANSPORT 1321 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1322 hci_stack->sco_transport->close(con_handle); 1323 } 1324 #endif 1325 #endif 1326 } 1327 1328 #ifdef ENABLE_CLASSIC 1329 1330 static const uint16_t hci_acl_packet_type_sizes[] = { 1331 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1332 HCI_ACL_DH1_SIZE, 0, 0, 0, 1333 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1334 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1335 }; 1336 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1337 0, // 3 slot packets 1338 1, // 5 slot packets 1339 25, // EDR 2 mpbs 1340 26, // EDR 3 mbps 1341 39, // 3 slot EDR packts 1342 40, // 5 slot EDR packet 1343 }; 1344 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1345 0x0f00, // 3 slot packets 1346 0xf000, // 5 slot packets 1347 0x1102, // EDR 2 mpbs 1348 0x2204, // EDR 3 mbps 1349 0x0300, // 3 slot EDR packts 1350 0x3000, // 5 slot EDR packet 1351 }; 1352 1353 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1354 // enable packet types based on size 1355 uint16_t packet_types = 0; 1356 unsigned int i; 1357 for (i=0;i<16;i++){ 1358 if (hci_acl_packet_type_sizes[i] == 0) continue; 1359 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1360 packet_types |= 1 << i; 1361 } 1362 } 1363 // disable packet types due to missing local supported features 1364 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1365 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1366 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1367 if (feature_set) continue; 1368 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1369 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1370 } 1371 return packet_types; 1372 } 1373 1374 uint16_t hci_usable_acl_packet_types(void){ 1375 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1376 // flip bits for "may not be used" 1377 return active_packet_types ^ 0x3306; 1378 } 1379 1380 void hci_enable_acl_packet_types(uint16_t packet_types){ 1381 hci_stack->enabled_packet_types_acl = packet_types; 1382 } 1383 1384 static const struct { 1385 uint8_t feature_index; 1386 uint16_t feature_packet_mask; 1387 } hci_sco_packet_type_feature_requirements[] = { 1388 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1389 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1390 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1391 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1392 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1393 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1394 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1395 }; 1396 1397 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1398 static const struct { 1399 uint16_t type; 1400 uint16_t payload_length; 1401 } hci_sco_packet_type_to_payload_length[] = { 1402 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1403 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1404 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1405 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1406 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1407 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1408 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1409 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1410 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1411 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1412 }; 1413 1414 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1415 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1416 unsigned int i; 1417 // disable packet types due to missing local supported features 1418 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1419 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1420 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1421 if (feature_set) continue; 1422 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1423 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1424 } 1425 return packet_types; 1426 } 1427 1428 uint16_t hci_usable_sco_packet_types(void){ 1429 return hci_stack->usable_packet_types_sco; 1430 } 1431 1432 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1433 uint8_t i; 1434 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1435 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1436 return hci_sco_packet_type_to_payload_length[i].payload_length; 1437 } 1438 } 1439 return 0; 1440 } 1441 1442 #endif 1443 1444 uint8_t* hci_get_outgoing_packet_buffer(void){ 1445 // hci packet buffer is >= acl data packet length 1446 return hci_stack->hci_packet_buffer; 1447 } 1448 1449 uint16_t hci_max_acl_data_packet_length(void){ 1450 return hci_stack->acl_data_packet_length; 1451 } 1452 1453 #ifdef ENABLE_CLASSIC 1454 bool hci_extended_sco_link_supported(void){ 1455 // No. 31, byte 3, bit 7 1456 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1457 } 1458 #endif 1459 1460 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1461 // No. 54, byte 6, bit 6 1462 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1463 } 1464 1465 #ifdef ENABLE_CLASSIC 1466 static bool gap_ssp_supported(void){ 1467 // No. 51, byte 6, bit 3 1468 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1469 } 1470 #endif 1471 1472 bool hci_classic_supported(void){ 1473 #ifdef ENABLE_CLASSIC 1474 // No. 37, byte 4, bit 5, = No BR/EDR Support 1475 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1476 #else 1477 return false; 1478 #endif 1479 } 1480 1481 bool hci_le_supported(void){ 1482 #ifdef ENABLE_BLE 1483 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1484 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1485 #else 1486 return false; 1487 #endif 1488 } 1489 1490 static bool hci_command_supported(uint8_t command_index){ 1491 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1492 } 1493 1494 #ifdef ENABLE_BLE 1495 1496 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1497 bool hci_le_extended_advertising_supported(void){ 1498 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1499 } 1500 #endif 1501 1502 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1503 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1504 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1505 } else { 1506 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1507 } 1508 } 1509 1510 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1511 *addr_type = hci_stack->le_own_addr_type; 1512 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1513 } 1514 1515 #ifdef ENABLE_LE_PERIPHERAL 1516 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1517 *addr_type = hci_stack->le_advertisements_own_addr_type; 1518 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1519 }; 1520 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1521 void gap_le_get_own_advertising_set_address(uint8_t * addr_type, bd_addr_t addr, uint8_t advertising_handle){ 1522 if (advertising_handle == 0){ 1523 gap_le_get_own_advertisements_address(addr_type, addr); 1524 } else { 1525 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 1526 if (advertising_set != NULL){ 1527 switch (advertising_set->extended_params.own_address_type){ 1528 case BD_ADDR_TYPE_LE_PUBLIC: 1529 *addr_type = BD_ADDR_TYPE_LE_PUBLIC; 1530 memcpy(addr, hci_stack->local_bd_addr, 6); 1531 break; 1532 case BD_ADDR_TYPE_LE_RANDOM: 1533 *addr_type = BD_ADDR_TYPE_LE_RANDOM; 1534 memcpy(addr, advertising_set->random_address, 6); 1535 break; 1536 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 1537 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 1538 // do nothing as random address was already set from enhanced connection complete 1539 break; 1540 default: 1541 break; 1542 } 1543 } 1544 } 1545 }; 1546 #endif 1547 #endif 1548 1549 #ifdef ENABLE_LE_CENTRAL 1550 1551 /** 1552 * @brief Get own addr type and address used for LE connections (Central) 1553 */ 1554 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1555 *addr_type = hci_stack->le_connection_own_addr_type; 1556 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1557 } 1558 1559 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1560 1561 uint16_t offset = 3; 1562 uint8_t num_reports = packet[offset]; 1563 offset += 1; 1564 1565 uint16_t i; 1566 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1567 for (i=0; (i<num_reports) && (offset < size);i++){ 1568 // sanity checks on data_length: 1569 uint8_t data_length = packet[offset + 8]; 1570 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1571 if ((offset + 9u + data_length + 1u) > size) return; 1572 // setup event 1573 uint8_t event_size = 10u + data_length; 1574 uint16_t pos = 0; 1575 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1576 event[pos++] = event_size; 1577 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1578 offset += 8; 1579 pos += 8; 1580 event[pos++] = packet[offset + 1 + data_length]; // rssi 1581 event[pos++] = data_length; 1582 offset++; 1583 (void)memcpy(&event[pos], &packet[offset], data_length); 1584 pos += data_length; 1585 offset += data_length + 1u; // rssi 1586 hci_emit_event(event, pos, 1); 1587 } 1588 } 1589 1590 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1591 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1592 uint16_t offset = 3; 1593 uint8_t num_reports = packet[offset++]; 1594 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1595 uint8_t i; 1596 for (i=0; (i<num_reports) && (offset < size);i++){ 1597 // sanity checks on data_length: 1598 uint16_t data_length = packet[offset + 23]; 1599 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1600 if ((offset + 24u + data_length) > size) return; 1601 uint16_t event_type = little_endian_read_16(packet, offset); 1602 offset += 2; 1603 if ((event_type & 0x10) != 0) { 1604 // setup legacy event 1605 uint8_t legacy_event_type; 1606 switch (event_type){ 1607 case 0b0010011: 1608 // ADV_IND 1609 legacy_event_type = 0; 1610 break; 1611 case 0b0010101: 1612 // ADV_DIRECT_IND 1613 legacy_event_type = 1; 1614 break; 1615 case 0b0010010: 1616 // ADV_SCAN_IND 1617 legacy_event_type = 2; 1618 break; 1619 case 0b0010000: 1620 // ADV_NONCONN_IND 1621 legacy_event_type = 3; 1622 break; 1623 case 0b0011011: 1624 case 0b0011010: 1625 // SCAN_RSP 1626 legacy_event_type = 4; 1627 break; 1628 default: 1629 legacy_event_type = 0; 1630 break; 1631 } 1632 uint16_t pos = 0; 1633 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1634 event[pos++] = 10u + data_length; 1635 event[pos++] = legacy_event_type; 1636 // copy address type + address 1637 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1638 offset += 7; 1639 pos += 7; 1640 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1641 offset += 4; 1642 // copy rssi 1643 event[pos++] = packet[offset++]; 1644 // skip periodic advertising interval and direct address 1645 offset += 9; 1646 // copy data len + data; 1647 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1648 pos += 1 +data_length; 1649 offset += 1+ data_length; 1650 hci_emit_event(event, pos, 1); 1651 } else { 1652 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1653 uint8_t report_len = 24 + data_length; 1654 event[1] = report_len; 1655 little_endian_store_16(event, 2, event_type); 1656 memcpy(&event[4], &packet[offset], report_len); 1657 offset += report_len; 1658 hci_emit_event(event, 2 + report_len, 1); 1659 } 1660 } 1661 } 1662 #endif 1663 1664 #endif 1665 #endif 1666 1667 #ifdef ENABLE_BLE 1668 #ifdef ENABLE_LE_PERIPHERAL 1669 static void hci_update_advertisements_enabled_for_current_roles(void){ 1670 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1671 // get number of active le slave connections 1672 int num_slave_connections = 0; 1673 btstack_linked_list_iterator_t it; 1674 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1675 while (btstack_linked_list_iterator_has_next(&it)){ 1676 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1677 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1678 if (con->state != OPEN) continue; 1679 if (con->role != HCI_ROLE_SLAVE) continue; 1680 if (!hci_is_le_connection(con)) continue; 1681 num_slave_connections++; 1682 } 1683 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1684 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1685 } else { 1686 hci_stack->le_advertisements_enabled_for_current_roles = false; 1687 } 1688 } 1689 #endif 1690 #endif 1691 1692 #ifdef ENABLE_CLASSIC 1693 static void gap_run_set_local_name(void){ 1694 hci_reserve_packet_buffer(); 1695 uint8_t * packet = hci_stack->hci_packet_buffer; 1696 // construct HCI Command and send 1697 uint16_t opcode = hci_write_local_name.opcode; 1698 hci_stack->last_cmd_opcode = opcode; 1699 packet[0] = opcode & 0xff; 1700 packet[1] = opcode >> 8; 1701 packet[2] = DEVICE_NAME_LEN; 1702 memset(&packet[3], 0, DEVICE_NAME_LEN); 1703 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1704 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1705 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1706 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1707 // expand '00:00:00:00:00:00' in name with bd_addr 1708 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1709 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1710 } 1711 1712 static void gap_run_set_eir_data(void){ 1713 hci_reserve_packet_buffer(); 1714 uint8_t * packet = hci_stack->hci_packet_buffer; 1715 // construct HCI Command in-place and send 1716 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1717 hci_stack->last_cmd_opcode = opcode; 1718 uint16_t offset = 0; 1719 packet[offset++] = opcode & 0xff; 1720 packet[offset++] = opcode >> 8; 1721 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1722 packet[offset++] = 0; // FEC not required 1723 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1724 if (hci_stack->eir_data){ 1725 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1726 ad_context_t context; 1727 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1728 uint8_t data_type = ad_iterator_get_data_type(&context); 1729 uint8_t size = ad_iterator_get_data_len(&context); 1730 const uint8_t *data = ad_iterator_get_data(&context); 1731 // copy item 1732 packet[offset++] = size + 1; 1733 packet[offset++] = data_type; 1734 memcpy(&packet[offset], data, size); 1735 // update name item 1736 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1737 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1738 } 1739 offset += size; 1740 } 1741 } else { 1742 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1743 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1744 packet[offset++] = bytes_to_copy + 1; 1745 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1746 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1747 // expand '00:00:00:00:00:00' in name with bd_addr 1748 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1749 } 1750 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1751 } 1752 1753 static void hci_run_gap_tasks_classic(void){ 1754 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1755 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1756 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1757 return; 1758 } 1759 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1760 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1761 gap_run_set_local_name(); 1762 return; 1763 } 1764 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1765 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1766 gap_run_set_eir_data(); 1767 return; 1768 } 1769 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1770 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1771 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1772 return; 1773 } 1774 // write page scan activity 1775 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1776 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1777 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1778 return; 1779 } 1780 // write page scan type 1781 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1782 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1783 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1784 return; 1785 } 1786 // write page timeout 1787 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1788 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1789 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1790 return; 1791 } 1792 // send scan enable 1793 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1794 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1795 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1796 return; 1797 } 1798 // send write scan activity 1799 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1800 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1801 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1802 return; 1803 } 1804 // send write inquiry transmit power level 1805 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1806 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1807 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1808 return; 1809 } 1810 } 1811 #endif 1812 1813 #ifndef HAVE_HOST_CONTROLLER_API 1814 1815 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1816 if (!hci_stack->config) return 0; 1817 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1818 // Limit baud rate for Broadcom chipsets to 3 mbps 1819 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1820 baud_rate = 3000000; 1821 } 1822 return baud_rate; 1823 } 1824 1825 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1826 UNUSED(ds); 1827 1828 switch (hci_stack->substate){ 1829 case HCI_INIT_W4_SEND_RESET: 1830 log_info("Resend HCI Reset"); 1831 hci_stack->substate = HCI_INIT_SEND_RESET; 1832 hci_stack->num_cmd_packets = 1; 1833 hci_run(); 1834 break; 1835 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1836 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1837 if (hci_stack->hci_transport->reset_link){ 1838 hci_stack->hci_transport->reset_link(); 1839 } 1840 1841 /* fall through */ 1842 1843 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1844 log_info("Resend HCI Reset - CSR Warm Boot"); 1845 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1846 hci_stack->num_cmd_packets = 1; 1847 hci_run(); 1848 break; 1849 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1850 if (hci_stack->hci_transport->set_baudrate){ 1851 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1852 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1853 hci_stack->hci_transport->set_baudrate(baud_rate); 1854 } 1855 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1856 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1857 if (hci_stack->hci_transport->reset_link){ 1858 log_info("Link Reset"); 1859 hci_stack->hci_transport->reset_link(); 1860 } 1861 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1862 hci_run(); 1863 } 1864 break; 1865 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1866 // otherwise continue 1867 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1868 hci_send_cmd(&hci_read_local_supported_commands); 1869 break; 1870 default: 1871 break; 1872 } 1873 } 1874 #endif 1875 1876 static void hci_initializing_next_state(void){ 1877 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1878 } 1879 1880 static void hci_init_done(void){ 1881 // done. tell the app 1882 log_info("hci_init_done -> HCI_STATE_WORKING"); 1883 hci_stack->state = HCI_STATE_WORKING; 1884 hci_emit_state(); 1885 } 1886 1887 // assumption: hci_can_send_command_packet_now() == true 1888 static void hci_initializing_run(void){ 1889 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1890 1891 if (!hci_can_send_command_packet_now()) return; 1892 1893 #ifndef HAVE_HOST_CONTROLLER_API 1894 bool need_baud_change = hci_stack->config 1895 && hci_stack->chipset 1896 && hci_stack->chipset->set_baudrate_command 1897 && hci_stack->hci_transport->set_baudrate 1898 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1899 #endif 1900 1901 switch (hci_stack->substate){ 1902 case HCI_INIT_SEND_RESET: 1903 hci_state_reset(); 1904 1905 #ifndef HAVE_HOST_CONTROLLER_API 1906 // prepare reset if command complete not received in 100ms 1907 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1908 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1909 btstack_run_loop_add_timer(&hci_stack->timeout); 1910 #endif 1911 // send command 1912 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1913 hci_send_cmd(&hci_reset); 1914 break; 1915 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1916 hci_send_cmd(&hci_read_local_version_information); 1917 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1918 break; 1919 1920 #ifndef HAVE_HOST_CONTROLLER_API 1921 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1922 hci_state_reset(); 1923 // prepare reset if command complete not received in 100ms 1924 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1925 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1926 btstack_run_loop_add_timer(&hci_stack->timeout); 1927 // send command 1928 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1929 hci_send_cmd(&hci_reset); 1930 break; 1931 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1932 hci_state_reset(); 1933 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1934 hci_send_cmd(&hci_reset); 1935 break; 1936 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1937 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1938 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1939 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1940 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1941 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1942 break; 1943 } 1944 case HCI_INIT_SET_BD_ADDR: 1945 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1946 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1947 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1948 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1949 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1950 break; 1951 case HCI_INIT_SEND_READ_LOCAL_NAME: 1952 #ifdef ENABLE_CLASSIC 1953 hci_send_cmd(&hci_read_local_name); 1954 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1955 break; 1956 #endif 1957 /* fall through */ 1958 1959 case HCI_INIT_SEND_BAUD_CHANGE: 1960 if (need_baud_change) { 1961 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1962 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1963 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1964 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1965 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1966 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1967 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1968 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1969 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1970 btstack_run_loop_add_timer(&hci_stack->timeout); 1971 } 1972 break; 1973 } 1974 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1975 1976 /* fall through */ 1977 1978 case HCI_INIT_CUSTOM_INIT: 1979 case HCI_INIT_CUSTOM_PRE_INIT: 1980 // Custom initialization 1981 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1982 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1983 bool send_cmd = false; 1984 switch (hci_stack->chipset_result){ 1985 case BTSTACK_CHIPSET_VALID_COMMAND: 1986 send_cmd = true; 1987 switch (hci_stack->substate){ 1988 case HCI_INIT_CUSTOM_INIT: 1989 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1990 break; 1991 case HCI_INIT_CUSTOM_PRE_INIT: 1992 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1993 break; 1994 default: 1995 btstack_assert(false); 1996 break; 1997 } 1998 break; 1999 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 2000 send_cmd = true; 2001 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 2002 log_info("CSR Warm Boot"); 2003 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 2004 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2005 btstack_run_loop_add_timer(&hci_stack->timeout); 2006 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 2007 && hci_stack->config 2008 && hci_stack->chipset 2009 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2010 && hci_stack->hci_transport->set_baudrate 2011 && hci_transport_uart_get_main_baud_rate()){ 2012 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2013 } else { 2014 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2015 } 2016 break; 2017 default: 2018 break; 2019 } 2020 2021 if (send_cmd){ 2022 int size = 3u + hci_stack->hci_packet_buffer[2u]; 2023 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 2024 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 2025 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 2026 break; 2027 } 2028 log_info("Init script done"); 2029 2030 // Custom Pre-Init complete, start regular init with HCI Reset 2031 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2032 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2033 hci_send_cmd(&hci_reset); 2034 break; 2035 } 2036 2037 // Init script download on Broadcom chipsets causes: 2038 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2039 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2040 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2041 2042 // - baud rate to reset, restore UART baud rate if needed 2043 if (need_baud_change) { 2044 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2045 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2046 hci_stack->hci_transport->set_baudrate(baud_rate); 2047 } 2048 2049 uint16_t bcm_delay_ms = 300; 2050 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2051 // -> Work around: wait here. 2052 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2053 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2054 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2055 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2056 btstack_run_loop_add_timer(&hci_stack->timeout); 2057 break; 2058 } 2059 } 2060 #endif 2061 /* fall through */ 2062 2063 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2064 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2065 hci_send_cmd(&hci_read_local_supported_commands); 2066 break; 2067 case HCI_INIT_READ_BD_ADDR: 2068 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2069 hci_send_cmd(&hci_read_bd_addr); 2070 break; 2071 case HCI_INIT_READ_BUFFER_SIZE: 2072 // only read buffer size if supported 2073 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2074 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2075 hci_send_cmd(&hci_read_buffer_size); 2076 break; 2077 } 2078 2079 /* fall through */ 2080 2081 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2082 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2083 hci_send_cmd(&hci_read_local_supported_features); 2084 break; 2085 2086 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2087 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2088 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2089 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2090 break; 2091 case HCI_INIT_HOST_BUFFER_SIZE: 2092 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2093 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2094 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2095 break; 2096 #endif 2097 2098 case HCI_INIT_SET_EVENT_MASK: 2099 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2100 if (hci_le_supported()){ 2101 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2102 } else { 2103 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2104 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2105 } 2106 break; 2107 2108 case HCI_INIT_SET_EVENT_MASK_2: 2109 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2110 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2111 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2112 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2113 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2114 // Encryption Change Event v2 - bit 25 2115 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2116 break; 2117 } 2118 2119 #ifdef ENABLE_CLASSIC 2120 /* fall through */ 2121 2122 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2123 if (hci_classic_supported() && gap_ssp_supported()){ 2124 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2125 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2126 break; 2127 } 2128 2129 /* fall through */ 2130 2131 case HCI_INIT_WRITE_INQUIRY_MODE: 2132 if (hci_classic_supported()){ 2133 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2134 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2135 break; 2136 } 2137 2138 /* fall through */ 2139 2140 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2141 // skip write secure connections host support if not supported or disabled 2142 if (hci_classic_supported() && hci_stack->secure_connections_enable 2143 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2144 hci_stack->secure_connections_active = true; 2145 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2146 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2147 break; 2148 } 2149 2150 /* fall through */ 2151 2152 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2153 // skip set min encryption key size 2154 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2155 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2156 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2157 break; 2158 } 2159 2160 #ifdef ENABLE_SCO_OVER_HCI 2161 /* fall through */ 2162 2163 // only sent if ENABLE_SCO_OVER_HCI is defined 2164 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2165 // skip write synchronous flow control if not supported 2166 if (hci_classic_supported() 2167 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2168 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2169 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2170 break; 2171 } 2172 /* fall through */ 2173 2174 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2175 // skip write default erroneous data reporting if not supported 2176 if (hci_classic_supported() 2177 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2178 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2179 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2180 break; 2181 } 2182 #endif 2183 2184 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2185 /* fall through */ 2186 2187 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2188 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2189 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2190 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2191 #ifdef ENABLE_SCO_OVER_HCI 2192 log_info("BCM: Route SCO data via HCI transport"); 2193 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2194 #endif 2195 #ifdef ENABLE_SCO_OVER_PCM 2196 log_info("BCM: Route SCO data via PCM interface"); 2197 #ifdef ENABLE_BCM_PCM_WBS 2198 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2199 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2200 #else 2201 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2202 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2203 #endif 2204 #endif 2205 break; 2206 } 2207 #endif 2208 2209 #ifdef ENABLE_SCO_OVER_PCM 2210 /* fall through */ 2211 2212 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2213 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2214 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2215 log_info("BCM: Config PCM interface for I2S"); 2216 #ifdef ENABLE_BCM_PCM_WBS 2217 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2218 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2219 #else 2220 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2221 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2222 #endif 2223 break; 2224 } 2225 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2226 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2227 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2228 log_info("BCM: Config PCM Data format"); 2229 // msb first, fill bits 0, left justified 2230 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2231 break; 2232 } 2233 #ifdef HAVE_BCM_PCM2 2234 case HCI_INIT_BCM_PCM2_SETUP: 2235 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2236 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2237 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2238 uint32_t pcm_clock_freq; 2239 uint8_t ch_0_period; 2240 #ifdef ENABLE_BCM_PCM_WBS 2241 // 512 kHz, resample 8 kHz to 16 khz 2242 pcm_clock_freq = 512000; 2243 ch_0_period = 1; 2244 #else 2245 // 256 khz, 8 khz output 2246 pcm_clock_freq = 256000; 2247 ch_0_period = 0; 2248 #endif 2249 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2250 hci_send_cmd(&hci_bcm_pcm2_setup, 2251 0x00, // Action = Write 2252 0x00, // Test_Options = None 2253 op_mode, // Op_Mode 2254 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2255 pcm_clock_freq, // PCM_Clock_Freq 2256 0x01, // Sync_Signal_Width 2257 0x0F, // Slot_Width 2258 0x01, // NumberOfSlots 2259 0x00, // Bank_0_Fill_Mode = 0s 2260 0x00, // Bank_0_Number_of_Fill_Bits 2261 0x00, // Bank_0_Programmable_Fill_Data 2262 0x00, // Bank_1_Fill_Mode = 0s 2263 0x00, // Bank_1_Number_of_Fill_Bits 2264 0x00, // Bank_1_Programmable_Fill_Data 2265 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2266 0x00, // Ch_0_Slot_Number 2267 0x01, // Ch_1_Slot_Number 2268 0x02, // Ch_2_Slot_Number 2269 0x03, // Ch_3_Slot_Number 2270 0x04, // Ch_4_Slot_Number 2271 ch_0_period, // Ch_0_Period 2272 0x00, // Ch_1_Period 2273 0x00 // Ch_2_Period 2274 ); 2275 break; 2276 } 2277 #endif 2278 #endif /* ENABLE_SCO_OVER_PCM */ 2279 #endif /* ENABLE_CLASSIC */ 2280 2281 #ifdef ENABLE_BLE 2282 /* fall through */ 2283 2284 // LE INIT 2285 case HCI_INIT_LE_READ_BUFFER_SIZE: 2286 if (hci_le_supported()){ 2287 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2288 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2289 hci_send_cmd(&hci_le_read_buffer_size_v2); 2290 } else { 2291 hci_send_cmd(&hci_le_read_buffer_size); 2292 } 2293 break; 2294 } 2295 2296 /* fall through */ 2297 2298 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2299 // skip write le host if not supported (e.g. on LE only EM9301) 2300 if (hci_le_supported() 2301 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2302 // LE Supported Host = 1, Simultaneous Host = 0 2303 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2304 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2305 break; 2306 } 2307 2308 /* fall through */ 2309 2310 case HCI_INIT_LE_SET_EVENT_MASK: 2311 if (hci_le_supported()){ 2312 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2313 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2314 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2315 #else 2316 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2317 #endif 2318 break; 2319 } 2320 #endif 2321 2322 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2323 /* fall through */ 2324 2325 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2326 if (hci_le_supported() 2327 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2328 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2329 hci_send_cmd(&hci_le_read_maximum_data_length); 2330 break; 2331 } 2332 2333 /* fall through */ 2334 2335 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2336 if (hci_le_supported() 2337 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2338 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2339 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2340 break; 2341 } 2342 #endif 2343 2344 #ifdef ENABLE_LE_CENTRAL 2345 /* fall through */ 2346 2347 case HCI_INIT_READ_WHITE_LIST_SIZE: 2348 if (hci_le_supported()){ 2349 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2350 hci_send_cmd(&hci_le_read_white_list_size); 2351 break; 2352 } 2353 2354 #endif 2355 2356 #ifdef ENABLE_LE_PERIPHERAL 2357 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2358 /* fall through */ 2359 2360 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2361 if (hci_le_extended_advertising_supported()){ 2362 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2363 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2364 break; 2365 } 2366 #endif 2367 #endif 2368 /* fall through */ 2369 2370 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2371 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2372 if (hci_le_supported()) { 2373 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2374 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2375 break; 2376 } 2377 #endif 2378 2379 /* fall through */ 2380 2381 case HCI_INIT_DONE: 2382 hci_stack->substate = HCI_INIT_DONE; 2383 // main init sequence complete 2384 #ifdef ENABLE_CLASSIC 2385 // check if initial Classic GAP Tasks are completed 2386 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2387 hci_run_gap_tasks_classic(); 2388 break; 2389 } 2390 #endif 2391 #ifdef ENABLE_BLE 2392 #ifdef ENABLE_LE_CENTRAL 2393 // check if initial LE GAP Tasks are completed 2394 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2395 hci_run_general_gap_le(); 2396 break; 2397 } 2398 #endif 2399 #endif 2400 hci_init_done(); 2401 break; 2402 2403 default: 2404 return; 2405 } 2406 } 2407 2408 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2409 bool command_completed = false; 2410 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2411 uint16_t opcode = little_endian_read_16(packet,3); 2412 if (opcode == hci_stack->last_cmd_opcode){ 2413 command_completed = true; 2414 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2415 } else { 2416 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2417 } 2418 } 2419 2420 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2421 uint8_t status = packet[2]; 2422 uint16_t opcode = little_endian_read_16(packet,4); 2423 if (opcode == hci_stack->last_cmd_opcode){ 2424 if (status){ 2425 command_completed = true; 2426 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2427 } else { 2428 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2429 } 2430 } else { 2431 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2432 } 2433 } 2434 #ifndef HAVE_HOST_CONTROLLER_API 2435 // Vendor == CSR 2436 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2437 // TODO: track actual command 2438 command_completed = true; 2439 } 2440 2441 // Vendor == Toshiba 2442 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2443 // TODO: track actual command 2444 command_completed = true; 2445 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2446 hci_stack->num_cmd_packets = 1; 2447 } 2448 #endif 2449 2450 return command_completed; 2451 } 2452 2453 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2454 2455 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2456 2457 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2458 2459 #ifndef HAVE_HOST_CONTROLLER_API 2460 2461 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2462 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2463 // 2464 // HCI Reset 2465 // Timeout 100 ms 2466 // HCI Reset 2467 // Command Complete Reset 2468 // HCI Read Local Version Information 2469 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2470 // hang... 2471 // 2472 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2473 if (!command_completed 2474 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2475 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2476 2477 uint16_t opcode = little_endian_read_16(packet,3); 2478 if (opcode == hci_reset.opcode){ 2479 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2480 return; 2481 } 2482 } 2483 2484 // CSR & H5 2485 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2486 if (!command_completed 2487 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2488 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2489 2490 uint16_t opcode = little_endian_read_16(packet,3); 2491 if (opcode == hci_reset.opcode){ 2492 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2493 return; 2494 } 2495 } 2496 2497 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2498 // fix: Correct substate and behave as command below 2499 if (command_completed){ 2500 switch (hci_stack->substate){ 2501 case HCI_INIT_SEND_RESET: 2502 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2503 break; 2504 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2505 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2506 break; 2507 default: 2508 break; 2509 } 2510 } 2511 2512 #endif 2513 2514 if (!command_completed) return; 2515 2516 bool need_baud_change = false; 2517 bool need_addr_change = false; 2518 2519 #ifndef HAVE_HOST_CONTROLLER_API 2520 need_baud_change = hci_stack->config 2521 && hci_stack->chipset 2522 && hci_stack->chipset->set_baudrate_command 2523 && hci_stack->hci_transport->set_baudrate 2524 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2525 2526 need_addr_change = hci_stack->custom_bd_addr_set 2527 && hci_stack->chipset 2528 && hci_stack->chipset->set_bd_addr_command; 2529 #endif 2530 2531 switch(hci_stack->substate){ 2532 2533 #ifndef HAVE_HOST_CONTROLLER_API 2534 case HCI_INIT_SEND_RESET: 2535 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2536 // fix: just correct substate and behave as command below 2537 2538 /* fall through */ 2539 #endif 2540 2541 case HCI_INIT_W4_SEND_RESET: 2542 btstack_run_loop_remove_timer(&hci_stack->timeout); 2543 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2544 return; 2545 2546 #ifndef HAVE_HOST_CONTROLLER_API 2547 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2548 // for STLC2500D, baud rate change already happened. 2549 // for others, baud rate gets changed now 2550 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2551 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2552 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2553 hci_stack->hci_transport->set_baudrate(baud_rate); 2554 } 2555 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2556 return; 2557 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2558 btstack_run_loop_remove_timer(&hci_stack->timeout); 2559 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2560 return; 2561 case HCI_INIT_W4_CUSTOM_INIT: 2562 // repeat custom init 2563 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2564 return; 2565 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2566 // repeat custom init 2567 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2568 return; 2569 #endif 2570 2571 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2572 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2573 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2574 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2575 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2576 return; 2577 } 2578 if (need_addr_change){ 2579 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2580 return; 2581 } 2582 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2583 return; 2584 #ifndef HAVE_HOST_CONTROLLER_API 2585 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2586 if (need_baud_change){ 2587 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2588 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2589 hci_stack->hci_transport->set_baudrate(baud_rate); 2590 } 2591 if (need_addr_change){ 2592 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2593 return; 2594 } 2595 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2596 return; 2597 case HCI_INIT_W4_SET_BD_ADDR: 2598 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2599 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2600 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2601 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2602 return; 2603 } 2604 // skipping st warm boot 2605 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2606 return; 2607 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2608 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2609 return; 2610 #endif 2611 2612 case HCI_INIT_DONE: 2613 // set state if we came here by fall through 2614 hci_stack->substate = HCI_INIT_DONE; 2615 return; 2616 2617 default: 2618 break; 2619 } 2620 hci_initializing_next_state(); 2621 } 2622 2623 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2624 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2625 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2626 // check if we have been aware of the HCI connection 2627 switch (conn->state){ 2628 case SENT_CREATE_CONNECTION: 2629 case RECEIVED_CONNECTION_REQUEST: 2630 case ACCEPTED_CONNECTION_REQUEST: 2631 break; 2632 default: 2633 return; 2634 } 2635 2636 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2637 bd_addr_t bd_address; 2638 (void)memcpy(&bd_address, conn->address, 6); 2639 2640 #ifdef ENABLE_CLASSIC 2641 // cache needed data 2642 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2643 #endif 2644 2645 // connection failed, remove entry 2646 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2647 btstack_memory_hci_connection_free( conn ); 2648 2649 #ifdef ENABLE_CLASSIC 2650 // notify client if dedicated bonding 2651 if (notify_dedicated_bonding_failed){ 2652 log_info("hci notify_dedicated_bonding_failed"); 2653 hci_emit_dedicated_bonding_result(bd_address, status); 2654 } 2655 2656 // if authentication error, also delete link key 2657 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2658 gap_drop_link_key_for_bd_addr(bd_address); 2659 } 2660 #else 2661 UNUSED(status); 2662 #endif 2663 } 2664 2665 #ifdef ENABLE_CLASSIC 2666 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2667 // SSP Controller 2668 if (features[6] & (1 << 3)){ 2669 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2670 } 2671 // eSCO 2672 if (features[3] & (1<<7)){ 2673 conn->remote_supported_features[0] |= 1; 2674 } 2675 // Extended features 2676 if (features[7] & (1<<7)){ 2677 conn->remote_supported_features[0] |= 2; 2678 } 2679 // SCO packet types 2680 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2681 } 2682 2683 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2684 // SSP Host 2685 if (features[0] & (1 << 0)){ 2686 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2687 } 2688 // SC Host 2689 if (features[0] & (1 << 3)){ 2690 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2691 } 2692 } 2693 2694 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2695 // SC Controller 2696 if (features[1] & (1 << 0)){ 2697 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2698 } 2699 } 2700 2701 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2702 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2703 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2704 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2705 if (conn->bonding_flags & BONDING_DEDICATED){ 2706 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2707 } 2708 } 2709 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2710 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2711 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2712 } 2713 2714 #endif 2715 2716 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2717 // handle BT initialization 2718 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2719 hci_initializing_event_handler(packet, size); 2720 } 2721 2722 // help with BT sleep 2723 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2724 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2725 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2726 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2727 hci_initializing_next_state(); 2728 } 2729 } 2730 2731 #ifdef ENABLE_CLASSIC 2732 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2733 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2734 conn->requested_security_level = LEVEL_0; 2735 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2736 hci_emit_security_level(conn->con_handle, security_level); 2737 2738 // dedicated bonding 2739 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2740 conn->bonding_flags &= ~BONDING_DEDICATED; 2741 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2742 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2743 // emit dedicated bonding complete, don't disconnect 2744 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2745 #else 2746 // request disconnect, event is emitted after disconnect 2747 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2748 #endif 2749 } 2750 } 2751 2752 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2753 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2754 conn->encryption_key_size = encryption_key_size; 2755 2756 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2757 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2758 hci_handle_mutual_authentication_completed(conn); 2759 } else { 2760 // otherwise trigger remote feature request and send authentication request 2761 hci_trigger_remote_features_for_connection(conn); 2762 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2763 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2764 } 2765 } 2766 } 2767 #endif 2768 2769 static void hci_store_local_supported_commands(const uint8_t * packet){ 2770 // create mapping table 2771 #define X(name, offset, bit) { offset, bit }, 2772 static struct { 2773 uint8_t byte_offset; 2774 uint8_t bit_position; 2775 } supported_hci_commands_map [] = { 2776 SUPPORTED_HCI_COMMANDS 2777 }; 2778 #undef X 2779 2780 // create names for debug purposes 2781 #ifdef ENABLE_LOG_DEBUG 2782 #define X(name, offset, bit) #name, 2783 static const char * command_names[] = { 2784 SUPPORTED_HCI_COMMANDS 2785 }; 2786 #undef X 2787 #endif 2788 2789 hci_stack->local_supported_commands = 0; 2790 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2791 uint16_t i; 2792 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2793 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2794 #ifdef ENABLE_LOG_DEBUG 2795 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); 2796 #else 2797 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2798 #endif 2799 hci_stack->local_supported_commands |= (1LU << i); 2800 } 2801 } 2802 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2803 } 2804 2805 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2806 UNUSED(size); 2807 2808 uint8_t status = 0; 2809 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2810 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2811 } 2812 uint16_t manufacturer; 2813 #ifdef ENABLE_CLASSIC 2814 hci_connection_t * conn; 2815 #endif 2816 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2817 hci_con_handle_t handle; 2818 #endif 2819 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2820 le_audio_cig_t * cig; 2821 #endif 2822 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2823 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2824 #endif 2825 2826 // get num cmd packets - limit to 1 to reduce complexity 2827 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2828 2829 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2830 switch (opcode){ 2831 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2832 if (status) break; 2833 // terminate, name 248 chars 2834 packet[6+248] = 0; 2835 log_info("local name: %s", &packet[6]); 2836 break; 2837 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2838 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2839 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2840 uint16_t acl_len = little_endian_read_16(packet, 6); 2841 uint16_t sco_len = packet[8]; 2842 2843 // determine usable ACL/SCO payload size 2844 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2845 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2846 2847 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2848 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2849 2850 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2851 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2852 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2853 } 2854 break; 2855 case HCI_OPCODE_HCI_READ_RSSI: 2856 if (status == ERROR_CODE_SUCCESS){ 2857 uint8_t event[5]; 2858 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2859 event[1] = 3; 2860 (void)memcpy(&event[2], &packet[6], 3); 2861 hci_emit_event(event, sizeof(event), 1); 2862 } 2863 break; 2864 #ifdef ENABLE_BLE 2865 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2866 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2867 hci_stack->le_iso_packets_total_num = packet[11]; 2868 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2869 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2870 2871 /* fall through */ 2872 2873 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2874 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2875 hci_stack->le_acl_packets_total_num = packet[8]; 2876 // determine usable ACL payload size 2877 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2878 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2879 } 2880 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); 2881 break; 2882 #endif 2883 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2884 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2885 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2886 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2887 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); 2888 break; 2889 #endif 2890 #ifdef ENABLE_LE_CENTRAL 2891 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2892 hci_stack->le_whitelist_capacity = packet[6]; 2893 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2894 break; 2895 #endif 2896 #ifdef ENABLE_LE_PERIPHERAL 2897 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2898 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2899 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2900 break; 2901 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2902 if (hci_stack->le_advertising_set_in_current_command != 0) { 2903 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2904 hci_stack->le_advertising_set_in_current_command = 0; 2905 if (advertising_set == NULL) break; 2906 uint8_t adv_status = packet[6]; 2907 uint8_t tx_power = packet[7]; 2908 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 }; 2909 if (adv_status == 0){ 2910 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2911 } 2912 hci_emit_event(event, sizeof(event), 1); 2913 } 2914 break; 2915 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2916 if (hci_stack->le_advertising_set_in_current_command != 0) { 2917 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2918 hci_stack->le_advertising_set_in_current_command = 0; 2919 if (advertising_set == NULL) break; 2920 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2921 if (status == 0){ 2922 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2923 } 2924 hci_emit_event(event, sizeof(event), 1); 2925 } 2926 break; 2927 #endif 2928 #endif 2929 case HCI_OPCODE_HCI_READ_BD_ADDR: 2930 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2931 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2932 #ifdef ENABLE_CLASSIC 2933 if (hci_stack->link_key_db){ 2934 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2935 } 2936 #endif 2937 break; 2938 #ifdef ENABLE_CLASSIC 2939 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2940 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2941 break; 2942 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2943 if (status == ERROR_CODE_SUCCESS) { 2944 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2945 } else { 2946 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2947 } 2948 break; 2949 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2950 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2951 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2952 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2953 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2954 hci_emit_event(event, sizeof(event), 1); 2955 } 2956 break; 2957 #endif 2958 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2959 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2960 2961 #ifdef ENABLE_CLASSIC 2962 // determine usable ACL packet types based on host buffer size and supported features 2963 hci_stack->usable_packet_types_acl = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2964 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2965 // determine usable SCO packet types based on supported features 2966 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2967 &hci_stack->local_supported_features[0]); 2968 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2969 #endif 2970 // Classic/LE 2971 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2972 break; 2973 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2974 manufacturer = little_endian_read_16(packet, 10); 2975 // map Cypress & Infineon to Broadcom 2976 switch (manufacturer){ 2977 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2978 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2979 log_info("Treat Cypress/Infineon as Broadcom"); 2980 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2981 little_endian_store_16(packet, 10, manufacturer); 2982 break; 2983 default: 2984 break; 2985 } 2986 hci_stack->manufacturer = manufacturer; 2987 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2988 break; 2989 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2990 hci_store_local_supported_commands(packet); 2991 break; 2992 #ifdef ENABLE_CLASSIC 2993 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2994 if (status) return; 2995 hci_stack->synchronous_flow_control_enabled = 1; 2996 break; 2997 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2998 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2999 conn = hci_connection_for_handle(handle); 3000 if (conn != NULL) { 3001 uint8_t key_size = 0; 3002 if (status == 0){ 3003 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 3004 log_info("Handle %04x key Size: %u", handle, key_size); 3005 } else { 3006 key_size = 1; 3007 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3008 } 3009 hci_handle_read_encryption_key_size_complete(conn, key_size); 3010 } 3011 break; 3012 // assert pairing complete event is emitted. 3013 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3014 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3015 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3016 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3017 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3018 // lookup connection by gap pairing addr 3019 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3020 if (conn == NULL) break; 3021 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3022 break; 3023 3024 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3025 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3026 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3027 uint8_t event[67]; 3028 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3029 event[1] = 65; 3030 (void)memset(&event[2], 0, 65); 3031 if (status == ERROR_CODE_SUCCESS){ 3032 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3033 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3034 event[2] = 3; 3035 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3036 } else { 3037 event[2] = 1; 3038 } 3039 } 3040 hci_emit_event(event, sizeof(event), 0); 3041 break; 3042 } 3043 3044 // note: only needed if user does not provide OOB data 3045 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3046 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3047 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3048 if (conn == NULL) break; 3049 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3050 break; 3051 #endif 3052 #endif 3053 #ifdef ENABLE_BLE 3054 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3055 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3056 // lookup CIG 3057 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3058 if (cig != NULL){ 3059 uint8_t i = 0; 3060 if (status == ERROR_CODE_SUCCESS){ 3061 // assign CIS handles to pre-allocated CIS 3062 btstack_linked_list_iterator_t it; 3063 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3064 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3065 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3066 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3067 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3068 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3069 iso_stream->cis_handle = cis_handle; 3070 cig->cis_con_handles[i] = cis_handle; 3071 i++; 3072 } 3073 } 3074 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3075 hci_emit_cig_created(cig, status); 3076 } else { 3077 hci_emit_cig_created(cig, status); 3078 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3079 } 3080 } 3081 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3082 break; 3083 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3084 if (status != ERROR_CODE_SUCCESS){ 3085 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3086 } 3087 break; 3088 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3089 if (status != ERROR_CODE_SUCCESS){ 3090 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3091 } 3092 break; 3093 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3094 // lookup BIG by state 3095 btstack_linked_list_iterator_t it; 3096 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3097 while (btstack_linked_list_iterator_has_next(&it)) { 3098 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3099 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3100 if (status == ERROR_CODE_SUCCESS){ 3101 big->state_vars.next_bis++; 3102 if (big->state_vars.next_bis == big->num_bis){ 3103 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3104 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3105 } else { 3106 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3107 } 3108 } else { 3109 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3110 big->state_vars.status = status; 3111 } 3112 return; 3113 } 3114 } 3115 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3116 while (btstack_linked_list_iterator_has_next(&it)) { 3117 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3118 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3119 if (status == ERROR_CODE_SUCCESS){ 3120 big_sync->state_vars.next_bis++; 3121 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3122 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3123 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3124 } else { 3125 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3126 } 3127 } else { 3128 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3129 big_sync->state_vars.status = status; 3130 } 3131 return; 3132 } 3133 } 3134 // Lookup CIS via active group operation 3135 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3136 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3137 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3138 3139 // lookup CIS by state 3140 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3141 while (btstack_linked_list_iterator_has_next(&it)){ 3142 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3143 handle = iso_stream->cis_handle; 3144 bool emit_cis_created = false; 3145 switch (iso_stream->state){ 3146 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3147 if (status != ERROR_CODE_SUCCESS){ 3148 emit_cis_created = true; 3149 break; 3150 } 3151 if (iso_stream->max_sdu_c_to_p > 0){ 3152 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3153 } else { 3154 emit_cis_created = true; 3155 } 3156 break; 3157 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3158 emit_cis_created = true; 3159 break; 3160 default: 3161 break; 3162 } 3163 if (emit_cis_created){ 3164 hci_cis_handle_created(iso_stream, status); 3165 } 3166 } 3167 } else { 3168 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3169 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3170 if (cig != NULL) { 3171 // emit cis created if all ISO Paths have been created 3172 // assume we are central 3173 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3174 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3175 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3176 // if outgoing has been setup, or incoming was setup but outgoing not required 3177 if ((cis_direction == 1) || (outgoing_needed == false)){ 3178 // lookup iso stream by cig/cis 3179 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3180 while (btstack_linked_list_iterator_has_next(&it)) { 3181 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3182 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3183 hci_cis_handle_created(iso_stream, status); 3184 } 3185 } 3186 } 3187 // next state 3188 cig->state_vars.next_cis++; 3189 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3190 } 3191 } 3192 } 3193 break; 3194 } 3195 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3196 // lookup BIG by state 3197 btstack_linked_list_iterator_t it; 3198 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3199 while (btstack_linked_list_iterator_has_next(&it)) { 3200 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3201 uint8_t big_handle = big_sync->big_handle; 3202 switch (big_sync->state){ 3203 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3204 btstack_linked_list_iterator_remove(&it); 3205 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3206 return; 3207 default: 3208 btstack_linked_list_iterator_remove(&it); 3209 hci_emit_big_sync_stopped(big_handle); 3210 return; 3211 } 3212 } 3213 break; 3214 } 3215 #endif 3216 #endif 3217 default: 3218 break; 3219 } 3220 } 3221 3222 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3223 UNUSED(size); 3224 3225 // get num cmd packets - limit to 1 to reduce complexity 3226 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3227 3228 // get opcode and command status 3229 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3230 3231 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3232 uint8_t status = hci_event_command_status_get_status(packet); 3233 #endif 3234 3235 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3236 bd_addr_type_t addr_type; 3237 bd_addr_t addr; 3238 #endif 3239 3240 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3241 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3242 #endif 3243 3244 switch (opcode){ 3245 #ifdef ENABLE_CLASSIC 3246 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3247 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3248 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3249 #endif 3250 #ifdef ENABLE_LE_CENTRAL 3251 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3252 #endif 3253 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3254 addr_type = hci_stack->outgoing_addr_type; 3255 memcpy(addr, hci_stack->outgoing_addr, 6); 3256 3257 // reset outgoing address info 3258 memset(hci_stack->outgoing_addr, 0, 6); 3259 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3260 3261 // on error 3262 if (status != ERROR_CODE_SUCCESS){ 3263 #ifdef ENABLE_LE_CENTRAL 3264 if (hci_is_le_connection_type(addr_type)){ 3265 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3266 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3267 } 3268 #endif 3269 // error => outgoing connection failed 3270 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3271 if (conn != NULL){ 3272 hci_handle_connection_failed(conn, status); 3273 } 3274 } 3275 break; 3276 #endif 3277 #ifdef ENABLE_CLASSIC 3278 case HCI_OPCODE_HCI_INQUIRY: 3279 if (status == ERROR_CODE_SUCCESS) { 3280 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3281 } else { 3282 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3283 } 3284 break; 3285 #endif 3286 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3287 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3288 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3289 if (status == ERROR_CODE_SUCCESS){ 3290 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3291 } else { 3292 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3293 } 3294 break; 3295 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3296 default: 3297 break; 3298 } 3299 } 3300 3301 #ifdef ENABLE_BLE 3302 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3303 gap_event[0] = HCI_EVENT_META_GAP; 3304 gap_event[1] = 36 - 2; 3305 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3306 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3307 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3308 memcpy(&gap_event[3], &hci_event[3], 11); 3309 memset(&gap_event[14], 0, 12); 3310 memcpy(&gap_event[26], &hci_event[14], 7); 3311 memset(&gap_event[33], 0xff, 3); 3312 break; 3313 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3314 memcpy(&gap_event[3], &hci_event[3], 30); 3315 memset(&gap_event[33], 0xff, 3); 3316 break; 3317 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3318 memcpy(&gap_event[3], &hci_event[3], 33); 3319 break; 3320 default: 3321 btstack_unreachable(); 3322 break; 3323 } 3324 } 3325 3326 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3327 bd_addr_t addr; 3328 bd_addr_type_t addr_type; 3329 hci_connection_t * conn; 3330 3331 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3332 uint8_t gap_event[36]; 3333 hci_create_gap_connection_complete_event(hci_event, gap_event); 3334 3335 // read fields 3336 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3337 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3338 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3339 3340 // Connection management 3341 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3342 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3343 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3344 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3345 3346 #ifdef ENABLE_LE_CENTRAL 3347 // handle error: error is reported only to the initiator -> outgoing connection 3348 if (status){ 3349 3350 // handle cancelled outgoing connection 3351 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3352 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3353 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3354 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3355 // reset state 3356 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3357 // get outgoing connection conn struct for direct connect 3358 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3359 conn = gap_get_outgoing_le_connection(); 3360 conn->state = SEND_CREATE_CONNECTION; 3361 } 3362 } 3363 3364 // free connection if cancelled by user (request == IDLE) 3365 if ((conn != NULL) && (hci_stack->le_connecting_request == LE_CONNECTING_IDLE)){ 3366 // remove entry 3367 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3368 btstack_memory_hci_connection_free( conn ); 3369 } 3370 return; 3371 } 3372 #endif 3373 3374 // on success, both hosts receive connection complete event 3375 if (role == HCI_ROLE_MASTER){ 3376 #ifdef ENABLE_LE_CENTRAL 3377 // if we're master, it was an outgoing connection 3378 // note: no hci_connection_t object exists yet for connect with whitelist 3379 3380 // if a identity addresses was used without enhanced connection complete event, 3381 // the connection complete event contains the current random address of the peer device. 3382 // This random address is needed in the case of a re-pairing 3383 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3384 conn = gap_get_outgoing_le_connection(); 3385 // if outgoing connection object is available, check if identity address was used. 3386 // if yes, track resolved random address and provide rpa 3387 // note: we don't update hci le subevent connection complete 3388 if (conn != NULL){ 3389 if (hci_is_le_identity_address_type(conn->address_type)){ 3390 memcpy(&gap_event[20], &gap_event[8], 6); 3391 gap_event[7] = conn->address_type; 3392 reverse_bd_addr(conn->address, &gap_event[8]); 3393 } 3394 } 3395 } 3396 3397 // we're done with it 3398 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3399 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3400 #endif 3401 } else { 3402 #ifdef ENABLE_LE_PERIPHERAL 3403 // if we're slave, it was an incoming connection, advertisements have stopped 3404 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3405 #endif 3406 } 3407 3408 // LE connections are auto-accepted, so just create a connection if there isn't one already 3409 if (!conn){ 3410 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3411 } 3412 3413 // no memory, sorry. 3414 if (!conn){ 3415 return; 3416 } 3417 3418 conn->state = OPEN; 3419 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3420 conn->le_connection_interval = conn_interval; 3421 3422 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3423 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3424 3425 #ifdef ENABLE_LE_PERIPHERAL 3426 if (role == HCI_ROLE_SLAVE){ 3427 hci_update_advertisements_enabled_for_current_roles(); 3428 } 3429 #endif 3430 3431 // init unenhanced att bearer mtu 3432 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3433 conn->att_connection.mtu_exchanged = false; 3434 3435 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3436 3437 // restart timer 3438 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3439 // btstack_run_loop_add_timer(&conn->timeout); 3440 3441 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3442 3443 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3444 hci_emit_event(gap_event, sizeof(gap_event), 1); 3445 3446 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3447 hci_emit_nr_connections_changed(); 3448 } 3449 #endif 3450 3451 #ifdef ENABLE_CLASSIC 3452 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){ 3453 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3454 // LEVEL_4 is tested by l2cap 3455 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3456 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3457 if (level >= LEVEL_3){ 3458 // MITM not possible without keyboard or display 3459 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3460 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3461 3462 // MITM possible if one side has keyboard and the other has keyboard or display 3463 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3464 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3465 3466 // MITM not possible if one side has only display and other side has no keyboard 3467 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3468 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3469 } 3470 // LEVEL 2 requires SSP, which is a given 3471 return true; 3472 } 3473 3474 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3475 // get requested security level 3476 gap_security_level_t requested_security_level = conn->requested_security_level; 3477 if (hci_stack->gap_secure_connections_only_mode){ 3478 requested_security_level = LEVEL_4; 3479 } 3480 3481 // assess security: LEVEL 4 requires SC 3482 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3483 if ((requested_security_level == LEVEL_4) && 3484 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3485 !hci_remote_sc_enabled(conn)){ 3486 log_info("Level 4 required, but SC not supported -> abort"); 3487 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3488 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3489 return; 3490 } 3491 3492 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3493 // - GAP/MOD/NBON/BV-02-C 3494 // - GAP/DM/NBON/BV-01-C 3495 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3496 switch (conn->io_cap_response_auth_req){ 3497 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3498 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3499 if (hci_stack->bondable == false){ 3500 log_info("Dedicated vs. non-bondable -> abort"); 3501 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3502 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3503 return; 3504 } 3505 default: 3506 break; 3507 } 3508 } 3509 3510 // assess security based on io capabilities 3511 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3512 // responder: fully validate io caps of both sides as well as OOB data 3513 bool security_possible = false; 3514 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3515 3516 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3517 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3518 // so we merge the OOB data availability 3519 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3520 if (conn->classic_oob_c_192 != NULL){ 3521 have_oob_data |= 1; 3522 } 3523 if (conn->classic_oob_c_256 != NULL){ 3524 have_oob_data |= 2; 3525 } 3526 // for up to Level 3, either P-192 as well as P-256 will do 3527 // 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 3528 // if remote does not SC, we should not receive P-256 data either 3529 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3530 security_possible = true; 3531 } 3532 // for Level 4, P-256 is needed 3533 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3534 security_possible = true; 3535 } 3536 #endif 3537 3538 if (security_possible == false){ 3539 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3540 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3541 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3542 return; 3543 } 3544 } else { 3545 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3546 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3547 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3548 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3549 log_info("Level 3+ required, but no input/output -> abort"); 3550 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3551 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3552 return; 3553 } 3554 #endif 3555 #endif 3556 } 3557 3558 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3559 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3560 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3561 } else { 3562 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3563 } 3564 #endif 3565 } 3566 3567 #endif 3568 3569 static void event_handler(uint8_t *packet, uint16_t size){ 3570 3571 uint16_t event_length = packet[1]; 3572 3573 // assert packet is complete 3574 if (size != (event_length + 2u)){ 3575 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3576 return; 3577 } 3578 3579 hci_con_handle_t handle; 3580 hci_connection_t * conn; 3581 int i; 3582 3583 #ifdef ENABLE_CLASSIC 3584 hci_link_type_t link_type; 3585 bd_addr_t addr; 3586 bd_addr_type_t addr_type; 3587 #endif 3588 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3589 hci_iso_stream_t * iso_stream; 3590 le_audio_big_t * big; 3591 le_audio_big_sync_t * big_sync; 3592 #endif 3593 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3594 btstack_linked_list_iterator_t it; 3595 #endif 3596 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3597 uint8_t advertising_handle; 3598 #endif 3599 3600 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3601 3602 switch (hci_event_packet_get_type(packet)) { 3603 3604 case HCI_EVENT_COMMAND_COMPLETE: 3605 handle_command_complete_event(packet, size); 3606 break; 3607 3608 case HCI_EVENT_COMMAND_STATUS: 3609 handle_command_status_event(packet, size); 3610 break; 3611 3612 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3613 if (size < 3) return; 3614 uint16_t num_handles = packet[2]; 3615 if (size != (3u + num_handles * 4u)) return; 3616 #ifdef ENABLE_CLASSIC 3617 bool notify_sco = false; 3618 #endif 3619 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3620 bool notify_iso = false; 3621 #endif 3622 uint16_t offset = 3; 3623 for (i=0; i<num_handles;i++){ 3624 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3625 offset += 2u; 3626 uint16_t num_packets = little_endian_read_16(packet, offset); 3627 offset += 2u; 3628 3629 conn = hci_connection_for_handle(handle); 3630 if (conn != NULL) { 3631 3632 if (conn->num_packets_sent >= num_packets) { 3633 conn->num_packets_sent -= num_packets; 3634 } else { 3635 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3636 conn->num_packets_sent = 0; 3637 } 3638 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3639 #ifdef ENABLE_CLASSIC 3640 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3641 notify_sco = true; 3642 } 3643 #endif 3644 } 3645 3646 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3647 hci_controller_dump_packets(); 3648 #endif 3649 3650 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3651 if (conn == NULL){ 3652 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3653 if (iso_stream != NULL){ 3654 if (iso_stream->num_packets_sent >= num_packets) { 3655 iso_stream->num_packets_sent -= num_packets; 3656 } else { 3657 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3658 iso_stream->num_packets_sent = 0; 3659 } 3660 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3661 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3662 if (big != NULL){ 3663 big->num_completed_timestamp_current_valid = true; 3664 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3665 } 3666 } 3667 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3668 num_packets, handle, iso_stream->num_packets_sent); 3669 notify_iso = true; 3670 } 3671 } 3672 #endif 3673 } 3674 3675 #ifdef ENABLE_CLASSIC 3676 if (notify_sco){ 3677 hci_notify_if_sco_can_send_now(); 3678 } 3679 #endif 3680 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3681 if (notify_iso){ 3682 hci_iso_notify_can_send_now(); 3683 } 3684 #endif 3685 break; 3686 } 3687 3688 #ifdef ENABLE_CLASSIC 3689 case HCI_EVENT_FLUSH_OCCURRED: 3690 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3691 handle = hci_event_flush_occurred_get_handle(packet); 3692 conn = hci_connection_for_handle(handle); 3693 if (conn) { 3694 log_info("Flush occurred, disconnect 0x%04x", handle); 3695 conn->state = SEND_DISCONNECT; 3696 } 3697 break; 3698 3699 case HCI_EVENT_INQUIRY_COMPLETE: 3700 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3701 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3702 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3703 hci_emit_event(event, sizeof(event), 1); 3704 } 3705 break; 3706 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3707 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3708 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3709 } 3710 break; 3711 case HCI_EVENT_CONNECTION_REQUEST: 3712 reverse_bd_addr(&packet[2], addr); 3713 link_type = (hci_link_type_t) packet[11]; 3714 3715 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3716 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3717 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3718 bd_addr_copy(hci_stack->decline_addr, addr); 3719 break; 3720 } 3721 3722 if (hci_stack->gap_classic_accept_callback != NULL){ 3723 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3724 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3725 bd_addr_copy(hci_stack->decline_addr, addr); 3726 break; 3727 } 3728 } 3729 3730 // TODO: eval COD 8-10 3731 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3732 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3733 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3734 if (!conn) { 3735 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3736 } 3737 if (!conn) { 3738 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3739 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3740 bd_addr_copy(hci_stack->decline_addr, addr); 3741 hci_run(); 3742 // avoid event to higher layer 3743 return; 3744 } 3745 conn->state = RECEIVED_CONNECTION_REQUEST; 3746 // store info about eSCO 3747 if (link_type == HCI_LINK_TYPE_ESCO){ 3748 conn->remote_supported_features[0] |= 1; 3749 } 3750 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3751 if (addr_type == BD_ADDR_TYPE_SCO){ 3752 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3753 // ACL exists unless fuzzing 3754 if (acl_conn != NULL) { 3755 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3756 } 3757 } 3758 hci_run(); 3759 break; 3760 3761 case HCI_EVENT_CONNECTION_COMPLETE: 3762 // Connection management 3763 reverse_bd_addr(&packet[5], addr); 3764 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3765 addr_type = BD_ADDR_TYPE_ACL; 3766 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3767 if (conn) { 3768 switch (conn->state){ 3769 // expected states 3770 case ACCEPTED_CONNECTION_REQUEST: 3771 case SENT_CREATE_CONNECTION: 3772 break; 3773 // unexpected state -> ignore 3774 default: 3775 // don't forward event to app 3776 return; 3777 } 3778 if (!packet[2]){ 3779 conn->state = OPEN; 3780 conn->con_handle = little_endian_read_16(packet, 3); 3781 3782 // trigger write supervision timeout if we're master 3783 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3784 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3785 } 3786 3787 // trigger write automatic flush timeout 3788 if (hci_stack->automatic_flush_timeout != 0){ 3789 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3790 } 3791 3792 // restart timer 3793 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3794 btstack_run_loop_add_timer(&conn->timeout); 3795 3796 // trigger remote features for dedicated bonding 3797 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3798 hci_trigger_remote_features_for_connection(conn); 3799 } 3800 3801 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3802 3803 hci_emit_nr_connections_changed(); 3804 } else { 3805 // connection failed 3806 hci_handle_connection_failed(conn, packet[2]); 3807 } 3808 } 3809 break; 3810 3811 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3812 reverse_bd_addr(&packet[5], addr); 3813 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3814 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3815 3816 // SCO exists unless fuzzer 3817 if (conn == NULL) break; 3818 3819 if (packet[2] != ERROR_CODE_SUCCESS){ 3820 // connection failed, remove entry 3821 hci_handle_connection_failed(conn, packet[2]); 3822 break; 3823 } 3824 3825 conn->state = OPEN; 3826 conn->con_handle = little_endian_read_16(packet, 3); 3827 3828 // update sco payload length for eSCO connections 3829 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3830 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3831 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3832 } 3833 3834 #ifdef ENABLE_SCO_OVER_HCI 3835 // update SCO 3836 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3837 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3838 } 3839 // trigger can send now 3840 if (hci_have_usb_transport()){ 3841 hci_stack->sco_can_send_now = true; 3842 } 3843 3844 // setup implict sco flow control 3845 conn->sco_tx_ready = 0; 3846 conn->sco_tx_active = 0; 3847 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3848 3849 #endif 3850 #ifdef HAVE_SCO_TRANSPORT 3851 // configure sco transport 3852 if (hci_stack->sco_transport != NULL){ 3853 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3854 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3855 } 3856 #endif 3857 break; 3858 3859 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3860 handle = little_endian_read_16(packet, 3); 3861 conn = hci_connection_for_handle(handle); 3862 if (!conn) break; 3863 if (!packet[2]){ 3864 const uint8_t * features = &packet[5]; 3865 hci_handle_remote_features_page_0(conn, features); 3866 3867 // read extended features if possible 3868 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3869 && ((conn->remote_supported_features[0] & 2) != 0)) { 3870 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3871 break; 3872 } 3873 } 3874 hci_handle_remote_features_received(conn); 3875 break; 3876 3877 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3878 handle = little_endian_read_16(packet, 3); 3879 conn = hci_connection_for_handle(handle); 3880 if (!conn) break; 3881 // status = ok, page = 1 3882 if (!packet[2]) { 3883 uint8_t page_number = packet[5]; 3884 uint8_t maximum_page_number = packet[6]; 3885 const uint8_t * features = &packet[7]; 3886 bool done = false; 3887 switch (page_number){ 3888 case 1: 3889 hci_handle_remote_features_page_1(conn, features); 3890 if (maximum_page_number >= 2){ 3891 // get Secure Connections (Controller) from Page 2 if available 3892 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3893 } else { 3894 // otherwise, assume SC (Controller) == SC (Host) 3895 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3896 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3897 } 3898 done = true; 3899 } 3900 break; 3901 case 2: 3902 hci_handle_remote_features_page_2(conn, features); 3903 done = true; 3904 break; 3905 default: 3906 break; 3907 } 3908 if (!done) break; 3909 } 3910 hci_handle_remote_features_received(conn); 3911 break; 3912 3913 case HCI_EVENT_LINK_KEY_REQUEST: 3914 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3915 hci_event_link_key_request_get_bd_addr(packet, addr); 3916 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3917 if (!conn) break; 3918 3919 // lookup link key in db if not cached 3920 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3921 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3922 } 3923 3924 // response sent by hci_run() 3925 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3926 #endif 3927 break; 3928 3929 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3930 hci_event_link_key_request_get_bd_addr(packet, addr); 3931 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3932 if (!conn) break; 3933 3934 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3935 3936 // CVE-2020-26555: ignore NULL link key 3937 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3938 if (btstack_is_null(&packet[8], 16)) break; 3939 3940 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3941 // Change Connection Encryption keeps link key type 3942 if (link_key_type != CHANGED_COMBINATION_KEY){ 3943 conn->link_key_type = link_key_type; 3944 } 3945 3946 // cache link key. link keys stored in little-endian format for legacy reasons 3947 memcpy(&conn->link_key, &packet[8], 16); 3948 3949 // only store link key: 3950 // - if bondable enabled 3951 if (hci_stack->bondable == false) break; 3952 // - if security level sufficient 3953 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3954 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3955 break; 3956 } 3957 3958 case HCI_EVENT_PIN_CODE_REQUEST: 3959 hci_event_pin_code_request_get_bd_addr(packet, addr); 3960 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3961 if (!conn) break; 3962 3963 hci_pairing_started(conn, false); 3964 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3965 if (!hci_stack->bondable ){ 3966 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3967 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3968 hci_run(); 3969 return; 3970 } 3971 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3972 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3973 log_info("Level 4 required, but SC not supported -> abort"); 3974 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3975 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3976 hci_run(); 3977 return; 3978 } 3979 break; 3980 3981 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3982 hci_event_io_capability_response_get_bd_addr(packet, addr); 3983 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3984 if (!conn) break; 3985 3986 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3987 hci_pairing_started(conn, true); 3988 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3989 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3990 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3991 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3992 #endif 3993 break; 3994 3995 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3996 hci_event_io_capability_response_get_bd_addr(packet, addr); 3997 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3998 if (!conn) break; 3999 4000 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 4001 hci_connection_timestamp(conn); 4002 hci_pairing_started(conn, true); 4003 break; 4004 4005 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4006 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4007 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4008 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4009 if (!conn) break; 4010 4011 hci_connection_timestamp(conn); 4012 4013 hci_pairing_started(conn, true); 4014 4015 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4016 break; 4017 #endif 4018 4019 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4020 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4021 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4022 if (!conn) break; 4023 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4024 if (hci_stack->ssp_auto_accept){ 4025 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4026 }; 4027 } else { 4028 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4029 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4030 // don't forward event to app 4031 hci_run(); 4032 return; 4033 } 4034 break; 4035 4036 case HCI_EVENT_USER_PASSKEY_REQUEST: 4037 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4038 if (hci_stack->ssp_auto_accept){ 4039 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4040 }; 4041 break; 4042 4043 case HCI_EVENT_MODE_CHANGE: 4044 handle = hci_event_mode_change_get_handle(packet); 4045 conn = hci_connection_for_handle(handle); 4046 if (!conn) break; 4047 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4048 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4049 break; 4050 #endif 4051 4052 case HCI_EVENT_ENCRYPTION_CHANGE: 4053 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4054 handle = hci_event_encryption_change_get_connection_handle(packet); 4055 conn = hci_connection_for_handle(handle); 4056 if (!conn) break; 4057 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4058 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4059 if (encryption_enabled){ 4060 if (hci_is_le_connection(conn)){ 4061 // For LE, we accept connection as encrypted 4062 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4063 } 4064 #ifdef ENABLE_CLASSIC 4065 else { 4066 4067 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4068 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4069 bool connected_uses_aes_ccm = encryption_enabled == 2; 4070 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4071 #ifdef ENABLE_TESTING_SUPPORT 4072 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4073 // - GAP/SEC/SEM/BI-31-C 4074 // - GAP/SEC/SEM/BI-32-C 4075 // - GAP/SEC/SEM/BI-33-C 4076 4077 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4078 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4079 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4080 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4081 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4082 } 4083 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4084 conn->link_key_type, new_link_key_type); 4085 conn->link_key_type = new_link_key_type; 4086 #else 4087 log_info("SC during pairing, but only E0 now -> abort"); 4088 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4089 break; 4090 #endif 4091 } 4092 4093 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4094 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4095 if (connected_uses_aes_ccm){ 4096 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4097 } 4098 #else 4099 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4100 // with encryption key size > hci_stack->gap_required_encyrption_key_size 4101 // for all operations that require any security. See BIAS attacks. 4102 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4103 #endif 4104 // validate encryption key size 4105 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4106 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4107 // already got encryption key size 4108 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4109 } else { 4110 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4111 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4112 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4113 } else { 4114 // if not, pretend everything is perfect 4115 hci_handle_read_encryption_key_size_complete(conn, 16); 4116 } 4117 } 4118 } 4119 #endif 4120 } else { 4121 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4122 } 4123 } else { 4124 #ifdef ENABLE_CLASSIC 4125 if (!hci_is_le_connection(conn)){ 4126 uint8_t status = hci_event_encryption_change_get_status(packet); 4127 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4128 conn->bonding_flags &= ~BONDING_DEDICATED; 4129 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4130 conn->bonding_status = status; 4131 } 4132 // trigger security update -> level 0 4133 hci_handle_mutual_authentication_completed(conn); 4134 } 4135 #endif 4136 } 4137 4138 break; 4139 4140 #ifdef ENABLE_CLASSIC 4141 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4142 handle = hci_event_authentication_complete_get_connection_handle(packet); 4143 conn = hci_connection_for_handle(handle); 4144 if (!conn) break; 4145 4146 // clear authentication active flag 4147 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4148 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4149 4150 // authenticated only if auth status == 0 4151 if (hci_event_authentication_complete_get_status(packet) == 0){ 4152 // authenticated 4153 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4154 4155 // If not already encrypted, start encryption 4156 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4157 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4158 break; 4159 } 4160 } 4161 4162 // emit updated security level (will be 0 if not authenticated) 4163 hci_handle_mutual_authentication_completed(conn); 4164 break; 4165 4166 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4167 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4168 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4169 if (!conn) break; 4170 4171 // treat successfully paired connection as authenticated 4172 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4173 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4174 } 4175 4176 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4177 break; 4178 #endif 4179 4180 // HCI_EVENT_DISCONNECTION_COMPLETE 4181 // has been split, to first notify stack before shutting connection down 4182 // see end of function, too. 4183 case HCI_EVENT_DISCONNECTION_COMPLETE: 4184 if (packet[2]) break; // status != 0 4185 handle = little_endian_read_16(packet, 3); 4186 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4187 if (hci_stack->acl_fragmentation_total_size > 0u) { 4188 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4189 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4190 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4191 hci_stack->acl_fragmentation_total_size = 0; 4192 hci_stack->acl_fragmentation_pos = 0; 4193 if (release_buffer){ 4194 hci_release_packet_buffer(); 4195 } 4196 } 4197 } 4198 4199 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4200 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4201 if (hci_stack->iso_fragmentation_total_size > 0u) { 4202 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4203 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4204 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4205 hci_stack->iso_fragmentation_total_size = 0; 4206 hci_stack->iso_fragmentation_pos = 0; 4207 if (release_buffer){ 4208 hci_release_packet_buffer(); 4209 } 4210 } 4211 } 4212 4213 // finalize iso stream for CIS handle 4214 iso_stream = hci_iso_stream_for_con_handle(handle); 4215 if (iso_stream != NULL){ 4216 hci_iso_stream_finalize(iso_stream); 4217 break; 4218 } 4219 4220 // finalize iso stream(s) for ACL handle 4221 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4222 while (btstack_linked_list_iterator_has_next(&it)){ 4223 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4224 if (iso_stream->acl_handle == handle ) { 4225 hci_iso_stream_finalize(iso_stream); 4226 } 4227 } 4228 #endif 4229 4230 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4231 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4232 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4233 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4234 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4235 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4236 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4237 hci_stack->num_cmd_packets = 1; 4238 } 4239 #endif 4240 4241 conn = hci_connection_for_handle(handle); 4242 if (!conn) break; 4243 #ifdef ENABLE_CLASSIC 4244 // pairing failed if it was ongoing 4245 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4246 #endif 4247 4248 // emit dedicatd bonding event 4249 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4250 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4251 } 4252 4253 // mark connection for shutdown, stop timers, reset state 4254 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4255 hci_connection_stop_timer(conn); 4256 hci_connection_init(conn); 4257 4258 #ifdef ENABLE_BLE 4259 #ifdef ENABLE_LE_PERIPHERAL 4260 // re-enable advertisements for le connections if active 4261 if (hci_is_le_connection(conn)){ 4262 hci_update_advertisements_enabled_for_current_roles(); 4263 } 4264 #endif 4265 #endif 4266 break; 4267 4268 case HCI_EVENT_HARDWARE_ERROR: 4269 log_error("Hardware Error: 0x%02x", packet[2]); 4270 if (hci_stack->hardware_error_callback){ 4271 (*hci_stack->hardware_error_callback)(packet[2]); 4272 } else { 4273 // if no special requests, just reboot stack 4274 hci_power_control_off(); 4275 hci_power_control_on(); 4276 } 4277 break; 4278 4279 #ifdef ENABLE_CLASSIC 4280 case HCI_EVENT_ROLE_CHANGE: 4281 if (packet[2]) break; // status != 0 4282 reverse_bd_addr(&packet[3], addr); 4283 addr_type = BD_ADDR_TYPE_ACL; 4284 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4285 if (!conn) break; 4286 conn->role = (hci_role_t) packet[9]; 4287 break; 4288 #endif 4289 4290 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4291 // release packet buffer only for asynchronous transport and if there are not further fragments 4292 if (hci_transport_synchronous()) { 4293 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4294 return; // instead of break: to avoid re-entering hci_run() 4295 } 4296 hci_stack->acl_fragmentation_tx_active = 0; 4297 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4298 hci_stack->iso_fragmentation_tx_active = 0; 4299 if (hci_stack->iso_fragmentation_total_size) break; 4300 #endif 4301 if (hci_stack->acl_fragmentation_total_size) break; 4302 hci_release_packet_buffer(); 4303 4304 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4305 hci_iso_notify_can_send_now(); 4306 #endif 4307 // L2CAP receives this event via the hci_emit_event below 4308 4309 #ifdef ENABLE_CLASSIC 4310 // For SCO, we do the can_send_now_check here 4311 hci_notify_if_sco_can_send_now(); 4312 #endif 4313 break; 4314 4315 #ifdef ENABLE_CLASSIC 4316 case HCI_EVENT_SCO_CAN_SEND_NOW: 4317 // For SCO, we do the can_send_now_check here 4318 hci_stack->sco_can_send_now = true; 4319 hci_notify_if_sco_can_send_now(); 4320 return; 4321 4322 // explode inquriy results for easier consumption 4323 case HCI_EVENT_INQUIRY_RESULT: 4324 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4325 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4326 gap_inquiry_explode(packet, size); 4327 break; 4328 #endif 4329 4330 #ifdef ENABLE_BLE 4331 case HCI_EVENT_LE_META: 4332 switch (packet[2]){ 4333 #ifdef ENABLE_LE_CENTRAL 4334 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4335 if (!hci_stack->le_scanning_enabled) break; 4336 le_handle_advertisement_report(packet, size); 4337 break; 4338 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4339 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4340 if (!hci_stack->le_scanning_enabled) break; 4341 le_handle_extended_advertisement_report(packet, size); 4342 break; 4343 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4344 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4345 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4346 break; 4347 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4348 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4349 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4350 while (btstack_linked_list_iterator_has_next(&it)) { 4351 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4352 if (advertising_set->advertising_handle == advertising_handle){ 4353 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4354 } 4355 } 4356 break; 4357 #endif 4358 #endif 4359 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4360 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4361 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4362 hci_handle_le_connection_complete_event(packet); 4363 break; 4364 4365 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4366 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4367 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4368 conn = hci_connection_for_handle(handle); 4369 if (!conn) break; 4370 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4371 break; 4372 4373 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4374 // connection 4375 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4376 conn = hci_connection_for_handle(handle); 4377 if (conn) { 4378 // read arguments 4379 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4380 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4381 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4382 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4383 4384 // validate against current connection parameter range 4385 le_connection_parameter_range_t existing_range; 4386 gap_get_connection_parameter_range(&existing_range); 4387 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4388 if (update_parameter){ 4389 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4390 conn->le_conn_interval_min = le_conn_interval_min; 4391 conn->le_conn_interval_max = le_conn_interval_max; 4392 conn->le_conn_latency = le_conn_latency; 4393 conn->le_supervision_timeout = le_supervision_timeout; 4394 } else { 4395 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4396 } 4397 } 4398 break; 4399 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4400 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4401 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4402 conn = hci_connection_for_handle(handle); 4403 if (conn) { 4404 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4405 } 4406 break; 4407 #endif 4408 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4409 case HCI_SUBEVENT_LE_CIS_REQUEST: 4410 // incoming CIS request, allocate iso stream object and cache metadata 4411 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4412 hci_subevent_le_cis_request_get_cig_id(packet), 4413 hci_subevent_le_cis_request_get_cis_id(packet)); 4414 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4415 if (iso_stream != NULL){ 4416 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4417 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4418 } 4419 break; 4420 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4421 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4422 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4423 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4424 iso_stream = hci_iso_stream_for_con_handle(handle); 4425 btstack_assert(iso_stream != NULL); 4426 // track connection info 4427 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4428 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4429 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4430 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4431 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4432 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4433 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4434 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4435 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4436 // CIS Accept by Peripheral 4437 if (status == ERROR_CODE_SUCCESS){ 4438 if (iso_stream->max_sdu_p_to_c > 0){ 4439 // we're peripheral and we will send data 4440 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4441 } else { 4442 // we're peripheral and we will only receive data 4443 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4444 } 4445 } else { 4446 hci_cis_handle_created(iso_stream, status); 4447 } 4448 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4449 } else { 4450 // CIG Setup by Central 4451 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4452 btstack_assert(cig != NULL); 4453 // update iso stream state 4454 if (status == ERROR_CODE_SUCCESS){ 4455 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4456 } else { 4457 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4458 } 4459 // update cig state 4460 uint8_t i; 4461 for (i=0;i<cig->num_cis;i++){ 4462 if (cig->cis_con_handles[i] == handle){ 4463 cig->cis_setup_active[i] = false; 4464 if (status == ERROR_CODE_SUCCESS){ 4465 cig->cis_established[i] = true; 4466 } else { 4467 hci_cis_handle_created(iso_stream, status); 4468 } 4469 } 4470 } 4471 4472 // trigger iso path setup if complete 4473 bool cis_setup_active = false; 4474 for (i=0;i<cig->num_cis;i++){ 4475 cis_setup_active |= cig->cis_setup_active[i]; 4476 } 4477 if (cis_setup_active == false){ 4478 cig->state_vars.next_cis = 0; 4479 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4480 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4481 } 4482 } 4483 } 4484 break; 4485 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4486 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4487 big = hci_big_for_handle(packet[4]); 4488 if (big != NULL){ 4489 uint8_t status = packet[3]; 4490 if (status == ERROR_CODE_SUCCESS){ 4491 // store bis_con_handles and trigger iso path setup 4492 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4493 uint8_t i; 4494 for (i=0;i<num_bis;i++){ 4495 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4496 big->bis_con_handles[i] = bis_handle; 4497 // assign bis handle 4498 btstack_linked_list_iterator_t it; 4499 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4500 while (btstack_linked_list_iterator_has_next(&it)){ 4501 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4502 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4503 (iso_stream->group_id == big->big_handle)){ 4504 iso_stream->cis_handle = bis_handle; 4505 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4506 break; 4507 } 4508 } 4509 } 4510 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4511 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4512 big->state_vars.next_bis = 0; 4513 } 4514 } else { 4515 // create BIG failed or has been stopped by us 4516 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4517 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4518 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4519 hci_emit_big_created(big, status); 4520 } else { 4521 hci_emit_big_terminated(big); 4522 } 4523 } 4524 } 4525 break; 4526 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4527 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4528 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4529 if (big != NULL){ 4530 // finalize associated ISO streams 4531 btstack_linked_list_iterator_t it; 4532 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4533 while (btstack_linked_list_iterator_has_next(&it)){ 4534 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4535 if (iso_stream->group_id == big->big_handle){ 4536 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4537 btstack_linked_list_iterator_remove(&it); 4538 btstack_memory_hci_iso_stream_free(iso_stream); 4539 } 4540 } 4541 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4542 switch (big->state){ 4543 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4544 hci_emit_big_created(big, big->state_vars.status); 4545 break; 4546 default: 4547 hci_emit_big_terminated(big); 4548 break; 4549 } 4550 } 4551 break; 4552 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4553 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4554 big_sync = hci_big_sync_for_handle(packet[4]); 4555 if (big_sync != NULL){ 4556 uint8_t status = packet[3]; 4557 uint8_t big_handle = packet[4]; 4558 if (status == ERROR_CODE_SUCCESS){ 4559 // store bis_con_handles and trigger iso path setup 4560 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4561 uint8_t i; 4562 for (i=0;i<num_bis;i++){ 4563 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4564 big_sync->bis_con_handles[i] = bis_handle; 4565 // setup iso_stream_t 4566 btstack_linked_list_iterator_t it; 4567 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4568 while (btstack_linked_list_iterator_has_next(&it)){ 4569 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4570 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4571 (iso_stream->group_id == big_sync->big_handle)){ 4572 iso_stream->cis_handle = bis_handle; 4573 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4574 break; 4575 } 4576 } 4577 } 4578 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4579 // trigger iso path setup 4580 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4581 big_sync->state_vars.next_bis = 0; 4582 } 4583 } else { 4584 // create BIG Sync failed or has been stopped by us 4585 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4586 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4587 hci_emit_big_sync_created(big_sync, status); 4588 } else { 4589 hci_emit_big_sync_stopped(big_handle); 4590 } 4591 } 4592 } 4593 break; 4594 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4595 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4596 big_sync = hci_big_sync_for_handle(packet[4]); 4597 if (big_sync != NULL){ 4598 uint8_t big_handle = packet[4]; 4599 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4600 hci_emit_big_sync_stopped(big_handle); 4601 } 4602 break; 4603 #endif 4604 default: 4605 break; 4606 } 4607 break; 4608 #endif 4609 case HCI_EVENT_VENDOR_SPECIFIC: 4610 // Vendor specific commands often create vendor specific event instead of num completed packets 4611 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4612 switch (hci_stack->manufacturer){ 4613 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4614 hci_stack->num_cmd_packets = 1; 4615 break; 4616 default: 4617 break; 4618 } 4619 break; 4620 default: 4621 break; 4622 } 4623 4624 handle_event_for_current_stack_state(packet, size); 4625 4626 // notify upper stack 4627 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4628 4629 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4630 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4631 handle = little_endian_read_16(packet, 3); 4632 hci_connection_t * aConn = hci_connection_for_handle(handle); 4633 // discard connection if app did not trigger a reconnect in the event handler 4634 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4635 hci_shutdown_connection(aConn); 4636 } 4637 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4638 hci_controller_dump_packets(); 4639 #endif 4640 } 4641 4642 // execute main loop 4643 hci_run(); 4644 } 4645 4646 #ifdef ENABLE_CLASSIC 4647 4648 static void sco_handler(uint8_t * packet, uint16_t size){ 4649 // lookup connection struct 4650 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4651 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4652 if (!conn) return; 4653 4654 #ifdef ENABLE_SCO_OVER_HCI 4655 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4656 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4657 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4658 packet[2] = 0x3c; 4659 memmove(&packet[3], &packet[23], 63); 4660 size = 63; 4661 } 4662 } 4663 4664 if (hci_have_usb_transport()){ 4665 // Nothing to do 4666 } else { 4667 // 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); 4668 if (hci_stack->synchronous_flow_control_enabled == 0){ 4669 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4670 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4671 if (conn->sco_tx_active == 0){ 4672 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4673 conn->sco_tx_active = 1; 4674 conn->sco_tx_ready = max_sco_packets; 4675 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4676 hci_notify_if_sco_can_send_now(); 4677 } 4678 } else { 4679 if (conn->sco_tx_ready < max_sco_packets){ 4680 conn->sco_tx_ready++; 4681 } 4682 hci_notify_if_sco_can_send_now(); 4683 } 4684 } 4685 } 4686 #endif 4687 4688 // deliver to app 4689 if (hci_stack->sco_packet_handler) { 4690 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4691 } 4692 4693 #ifdef HAVE_SCO_TRANSPORT 4694 // We can send one packet for each received packet 4695 conn->sco_tx_ready++; 4696 hci_notify_if_sco_can_send_now(); 4697 #endif 4698 4699 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4700 conn->num_packets_completed++; 4701 hci_stack->host_completed_packets = 1; 4702 hci_run(); 4703 #endif 4704 } 4705 #endif 4706 4707 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4708 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4709 // propagate ISO packets received as ACL 4710 hci_iso_stream_t * iso_stream = NULL; 4711 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4712 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4713 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4714 if (iso_stream != NULL){ 4715 packet_type = HCI_ISO_DATA_PACKET; 4716 } 4717 } 4718 #endif 4719 4720 hci_dump_packet(packet_type, 1, packet, size); 4721 switch (packet_type) { 4722 case HCI_EVENT_PACKET: 4723 event_handler(packet, size); 4724 break; 4725 case HCI_ACL_DATA_PACKET: 4726 acl_handler(packet, size); 4727 break; 4728 #ifdef ENABLE_CLASSIC 4729 case HCI_SCO_DATA_PACKET: 4730 sco_handler(packet, size); 4731 break; 4732 #endif 4733 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4734 case HCI_ISO_DATA_PACKET: 4735 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4736 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4737 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4738 } 4739 hci_iso_packet_handler(iso_stream, packet, size); 4740 break; 4741 #endif 4742 default: 4743 break; 4744 } 4745 } 4746 4747 /** 4748 * @brief Add event packet handler. 4749 */ 4750 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4751 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4752 } 4753 4754 /** 4755 * @brief Remove event packet handler. 4756 */ 4757 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4758 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4759 } 4760 4761 /** Register HCI packet handlers */ 4762 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4763 hci_stack->acl_packet_handler = handler; 4764 } 4765 4766 #ifdef ENABLE_CLASSIC 4767 /** 4768 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4769 */ 4770 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4771 hci_stack->sco_packet_handler = handler; 4772 } 4773 #endif 4774 4775 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4776 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4777 hci_stack->iso_packet_handler = handler; 4778 } 4779 #endif 4780 4781 static void hci_state_reset(void){ 4782 // no connections yet 4783 hci_stack->connections = NULL; 4784 4785 // keep discoverable/connectable as this has been requested by the client(s) 4786 // hci_stack->discoverable = 0; 4787 // hci_stack->connectable = 0; 4788 // hci_stack->bondable = 1; 4789 // hci_stack->own_addr_type = 0; 4790 4791 // buffer is free 4792 hci_stack->hci_packet_buffer_reserved = false; 4793 4794 // no pending cmds 4795 hci_stack->decline_reason = 0; 4796 4797 hci_stack->secure_connections_active = false; 4798 4799 #ifdef ENABLE_CLASSIC 4800 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4801 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4802 4803 hci_stack->gap_tasks_classic = 4804 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4805 GAP_TASK_SET_CLASS_OF_DEVICE | 4806 GAP_TASK_SET_LOCAL_NAME | 4807 GAP_TASK_SET_EIR_DATA | 4808 GAP_TASK_WRITE_SCAN_ENABLE | 4809 GAP_TASK_WRITE_PAGE_TIMEOUT; 4810 #endif 4811 4812 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4813 hci_stack->classic_read_local_oob_data = false; 4814 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4815 #endif 4816 4817 // LE 4818 #ifdef ENABLE_BLE 4819 memset(hci_stack->le_random_address, 0, 6); 4820 hci_stack->le_random_address_set = 0; 4821 #endif 4822 #ifdef ENABLE_LE_CENTRAL 4823 hci_stack->le_scanning_active = false; 4824 hci_stack->le_scanning_param_update = true; 4825 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4826 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4827 hci_stack->le_whitelist_capacity = 0; 4828 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4829 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4830 #endif 4831 #endif 4832 #ifdef ENABLE_LE_PERIPHERAL 4833 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4834 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4835 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4836 } 4837 if (hci_stack->le_advertisements_data != NULL){ 4838 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4839 } 4840 #endif 4841 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4842 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4843 #endif 4844 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4845 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4846 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4847 #endif 4848 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4849 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4850 #endif 4851 } 4852 4853 #ifdef ENABLE_CLASSIC 4854 /** 4855 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4856 */ 4857 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4858 // store and open remote device db 4859 hci_stack->link_key_db = link_key_db; 4860 if (hci_stack->link_key_db) { 4861 hci_stack->link_key_db->open(); 4862 } 4863 } 4864 #endif 4865 4866 void hci_init(const hci_transport_t *transport, const void *config){ 4867 4868 #ifdef HAVE_MALLOC 4869 if (!hci_stack) { 4870 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4871 } 4872 #else 4873 hci_stack = &hci_stack_static; 4874 #endif 4875 memset(hci_stack, 0, sizeof(hci_stack_t)); 4876 4877 // reference to use transport layer implementation 4878 hci_stack->hci_transport = transport; 4879 4880 // reference to used config 4881 hci_stack->config = config; 4882 4883 // setup pointer for outgoing packet buffer 4884 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4885 4886 // max acl payload size defined in config.h 4887 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4888 4889 // register packet handlers with transport 4890 transport->register_packet_handler(&packet_handler); 4891 4892 hci_stack->state = HCI_STATE_OFF; 4893 4894 // class of device 4895 hci_stack->class_of_device = 0x007a020c; // Smartphone 4896 4897 // bondable by default 4898 hci_stack->bondable = 1; 4899 4900 #ifdef ENABLE_CLASSIC 4901 // classic name 4902 hci_stack->local_name = default_classic_name; 4903 4904 // Master slave policy 4905 hci_stack->master_slave_policy = 1; 4906 4907 // Allow Role Switch 4908 hci_stack->allow_role_switch = 1; 4909 4910 // Default / minimum security level = 2 4911 hci_stack->gap_security_level = LEVEL_2; 4912 4913 // Default Security Mode 4 4914 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4915 4916 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4917 hci_stack->gap_required_encyrption_key_size = 7; 4918 4919 // Link Supervision Timeout 4920 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4921 4922 // All ACL packet types are enabledh 4923 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4924 #endif 4925 4926 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4927 hci_stack->ssp_enable = 1; 4928 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4929 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4930 hci_stack->ssp_auto_accept = 1; 4931 4932 // Secure Connections: enable (requires support from Controller) 4933 hci_stack->secure_connections_enable = true; 4934 4935 // voice setting - signed 16 bit pcm data with CVSD over the air 4936 hci_stack->sco_voice_setting = 0x60; 4937 4938 #ifdef ENABLE_BLE 4939 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4940 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4941 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4942 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4943 hci_stack->le_connection_latency = 4; // 4 4944 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4945 hci_stack->le_minimum_ce_length = 0; // 0 ms 4946 hci_stack->le_maximum_ce_length = 0; // 0 ms 4947 #endif 4948 4949 #ifdef ENABLE_LE_CENTRAL 4950 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4951 4952 // default LE Scanning 4953 hci_stack->le_scan_type = 0x01; // active 4954 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4955 hci_stack->le_scan_window = 0x30; // 30 ms 4956 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4957 #endif 4958 4959 #ifdef ENABLE_LE_PERIPHERAL 4960 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4961 4962 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4963 hci_stack->le_advertisements_interval_min = 0x0800; 4964 hci_stack->le_advertisements_interval_max = 0x0800; 4965 hci_stack->le_advertisements_type = 0; 4966 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4967 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4968 hci_stack->le_advertisements_channel_map = 0x07; 4969 hci_stack->le_advertisements_filter_policy = 0; 4970 #endif 4971 4972 // connection parameter range used to answer connection parameter update requests in l2cap 4973 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4974 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4975 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4976 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4977 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4978 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4979 4980 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4981 hci_stack->iso_packets_to_queue = 1; 4982 #endif 4983 4984 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4985 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4986 #endif 4987 4988 hci_state_reset(); 4989 } 4990 4991 void hci_deinit(void){ 4992 btstack_run_loop_remove_timer(&hci_stack->timeout); 4993 #ifdef HAVE_MALLOC 4994 if (hci_stack) { 4995 free(hci_stack); 4996 } 4997 #endif 4998 hci_stack = NULL; 4999 5000 #ifdef ENABLE_CLASSIC 5001 disable_l2cap_timeouts = 0; 5002 #endif 5003 } 5004 5005 /** 5006 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5007 */ 5008 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5009 hci_stack->chipset = chipset_driver; 5010 5011 // reset chipset driver - init is also called on power_up 5012 if (hci_stack->chipset && hci_stack->chipset->init){ 5013 hci_stack->chipset->init(hci_stack->config); 5014 } 5015 } 5016 5017 void hci_enable_custom_pre_init(void){ 5018 hci_stack->chipset_pre_init = true; 5019 } 5020 5021 /** 5022 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5023 */ 5024 void hci_set_control(const btstack_control_t *hardware_control){ 5025 // references to used control implementation 5026 hci_stack->control = hardware_control; 5027 // init with transport config 5028 hardware_control->init(hci_stack->config); 5029 } 5030 5031 static void hci_discard_connections(void){ 5032 btstack_linked_list_iterator_t it; 5033 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5034 while (btstack_linked_list_iterator_has_next(&it)){ 5035 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5036 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5037 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5038 hci_shutdown_connection(connection); 5039 } 5040 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5041 while (hci_stack->iso_streams != NULL){ 5042 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5043 } 5044 #endif 5045 } 5046 5047 void hci_close(void){ 5048 5049 #ifdef ENABLE_CLASSIC 5050 // close remote device db 5051 if (hci_stack->link_key_db) { 5052 hci_stack->link_key_db->close(); 5053 } 5054 #endif 5055 5056 hci_discard_connections(); 5057 5058 hci_power_control(HCI_POWER_OFF); 5059 5060 #ifdef HAVE_MALLOC 5061 free(hci_stack); 5062 #endif 5063 hci_stack = NULL; 5064 } 5065 5066 #ifdef HAVE_SCO_TRANSPORT 5067 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5068 hci_stack->sco_transport = sco_transport; 5069 sco_transport->register_packet_handler(&packet_handler); 5070 } 5071 #endif 5072 5073 #ifdef ENABLE_CLASSIC 5074 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5075 // validate ranage and set 5076 if (encryption_key_size < 7) return; 5077 if (encryption_key_size > 16) return; 5078 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5079 } 5080 5081 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5082 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5083 hci_stack->gap_security_mode = security_mode; 5084 return ERROR_CODE_SUCCESS; 5085 } else { 5086 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5087 } 5088 } 5089 5090 gap_security_mode_t gap_get_security_mode(void){ 5091 return hci_stack->gap_security_mode; 5092 } 5093 5094 void gap_set_security_level(gap_security_level_t security_level){ 5095 hci_stack->gap_security_level = security_level; 5096 } 5097 5098 gap_security_level_t gap_get_security_level(void){ 5099 if (hci_stack->gap_secure_connections_only_mode){ 5100 return LEVEL_4; 5101 } 5102 return hci_stack->gap_security_level; 5103 } 5104 5105 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5106 hci_stack->gap_minimal_service_security_level = security_level; 5107 } 5108 5109 void gap_set_secure_connections_only_mode(bool enable){ 5110 hci_stack->gap_secure_connections_only_mode = enable; 5111 } 5112 5113 bool gap_get_secure_connections_only_mode(void){ 5114 return hci_stack->gap_secure_connections_only_mode; 5115 } 5116 #endif 5117 5118 #ifdef ENABLE_CLASSIC 5119 void gap_set_class_of_device(uint32_t class_of_device){ 5120 hci_stack->class_of_device = class_of_device; 5121 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5122 hci_run(); 5123 } 5124 5125 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5126 hci_stack->default_link_policy_settings = default_link_policy_settings; 5127 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5128 hci_run(); 5129 } 5130 5131 void gap_set_allow_role_switch(bool allow_role_switch){ 5132 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5133 } 5134 5135 uint8_t hci_get_allow_role_switch(void){ 5136 return hci_stack->allow_role_switch; 5137 } 5138 5139 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5140 hci_stack->link_supervision_timeout = link_supervision_timeout; 5141 } 5142 5143 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5144 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5145 } 5146 5147 uint16_t hci_automatic_flush_timeout(void){ 5148 return hci_stack->automatic_flush_timeout; 5149 } 5150 5151 void hci_disable_l2cap_timeout_check(void){ 5152 disable_l2cap_timeouts = 1; 5153 } 5154 #endif 5155 5156 #ifndef HAVE_HOST_CONTROLLER_API 5157 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5158 void hci_set_bd_addr(bd_addr_t addr){ 5159 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5160 hci_stack->custom_bd_addr_set = 1; 5161 } 5162 #endif 5163 5164 // State-Module-Driver overview 5165 // state module low-level 5166 // HCI_STATE_OFF off close 5167 // HCI_STATE_INITIALIZING, on open 5168 // HCI_STATE_WORKING, on open 5169 // HCI_STATE_HALTING, on open 5170 // HCI_STATE_SLEEPING, off/sleep close 5171 // HCI_STATE_FALLING_ASLEEP on open 5172 5173 static int hci_power_control_on(void){ 5174 5175 // power on 5176 int err = 0; 5177 if (hci_stack->control && hci_stack->control->on){ 5178 err = (*hci_stack->control->on)(); 5179 } 5180 if (err){ 5181 log_error( "POWER_ON failed"); 5182 hci_emit_hci_open_failed(); 5183 return err; 5184 } 5185 5186 // int chipset driver 5187 if (hci_stack->chipset && hci_stack->chipset->init){ 5188 hci_stack->chipset->init(hci_stack->config); 5189 } 5190 5191 // init transport 5192 if (hci_stack->hci_transport->init){ 5193 hci_stack->hci_transport->init(hci_stack->config); 5194 } 5195 5196 // open transport 5197 err = hci_stack->hci_transport->open(); 5198 if (err){ 5199 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5200 if (hci_stack->control && hci_stack->control->off){ 5201 (*hci_stack->control->off)(); 5202 } 5203 hci_emit_hci_open_failed(); 5204 return err; 5205 } 5206 return 0; 5207 } 5208 5209 static void hci_power_control_off(void){ 5210 5211 log_info("hci_power_control_off"); 5212 5213 // close low-level device 5214 hci_stack->hci_transport->close(); 5215 5216 log_info("hci_power_control_off - hci_transport closed"); 5217 5218 // power off 5219 if (hci_stack->control && hci_stack->control->off){ 5220 (*hci_stack->control->off)(); 5221 } 5222 5223 log_info("hci_power_control_off - control closed"); 5224 5225 hci_stack->state = HCI_STATE_OFF; 5226 } 5227 5228 static void hci_power_control_sleep(void){ 5229 5230 log_info("hci_power_control_sleep"); 5231 5232 #if 0 5233 // don't close serial port during sleep 5234 5235 // close low-level device 5236 hci_stack->hci_transport->close(hci_stack->config); 5237 #endif 5238 5239 // sleep mode 5240 if (hci_stack->control && hci_stack->control->sleep){ 5241 (*hci_stack->control->sleep)(); 5242 } 5243 5244 hci_stack->state = HCI_STATE_SLEEPING; 5245 } 5246 5247 static int hci_power_control_wake(void){ 5248 5249 log_info("hci_power_control_wake"); 5250 5251 // wake on 5252 if (hci_stack->control && hci_stack->control->wake){ 5253 (*hci_stack->control->wake)(); 5254 } 5255 5256 #if 0 5257 // open low-level device 5258 int err = hci_stack->hci_transport->open(hci_stack->config); 5259 if (err){ 5260 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5261 if (hci_stack->control && hci_stack->control->off){ 5262 (*hci_stack->control->off)(); 5263 } 5264 hci_emit_hci_open_failed(); 5265 return err; 5266 } 5267 #endif 5268 5269 return 0; 5270 } 5271 5272 static void hci_power_enter_initializing_state(void){ 5273 // set up state machine 5274 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5275 hci_stack->hci_packet_buffer_reserved = false; 5276 hci_stack->state = HCI_STATE_INITIALIZING; 5277 5278 #ifndef HAVE_HOST_CONTROLLER_API 5279 if (hci_stack->chipset_pre_init) { 5280 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5281 } else 5282 #endif 5283 { 5284 hci_stack->substate = HCI_INIT_SEND_RESET; 5285 } 5286 } 5287 5288 static void hci_power_enter_halting_state(void){ 5289 #ifdef ENABLE_BLE 5290 // drop entries scheduled for removal, mark others for re-adding 5291 btstack_linked_list_iterator_t it; 5292 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5293 while (btstack_linked_list_iterator_has_next(&it)){ 5294 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5295 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5296 btstack_linked_list_iterator_remove(&it); 5297 btstack_memory_whitelist_entry_free(entry); 5298 } else { 5299 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5300 } 5301 } 5302 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5303 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5304 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5305 while (btstack_linked_list_iterator_has_next(&it)){ 5306 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5307 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5308 btstack_linked_list_iterator_remove(&it); 5309 btstack_memory_periodic_advertiser_list_entry_free(entry); 5310 } else { 5311 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5312 continue; 5313 } 5314 } 5315 #endif 5316 #endif 5317 // see hci_run 5318 hci_stack->state = HCI_STATE_HALTING; 5319 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5320 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5321 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5322 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5323 btstack_run_loop_add_timer(&hci_stack->timeout); 5324 } 5325 5326 // returns error 5327 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5328 int err; 5329 switch (power_mode){ 5330 case HCI_POWER_ON: 5331 err = hci_power_control_on(); 5332 if (err != 0) { 5333 log_error("hci_power_control_on() error %d", err); 5334 return err; 5335 } 5336 hci_power_enter_initializing_state(); 5337 break; 5338 case HCI_POWER_OFF: 5339 // do nothing 5340 break; 5341 case HCI_POWER_SLEEP: 5342 // do nothing (with SLEEP == OFF) 5343 break; 5344 default: 5345 btstack_assert(false); 5346 break; 5347 } 5348 return ERROR_CODE_SUCCESS; 5349 } 5350 5351 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5352 switch (power_mode){ 5353 case HCI_POWER_ON: 5354 // do nothing 5355 break; 5356 case HCI_POWER_OFF: 5357 // no connections yet, just turn it off 5358 hci_power_control_off(); 5359 break; 5360 case HCI_POWER_SLEEP: 5361 // no connections yet, just turn it off 5362 hci_power_control_sleep(); 5363 break; 5364 default: 5365 btstack_assert(false); 5366 break; 5367 } 5368 return ERROR_CODE_SUCCESS; 5369 } 5370 5371 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5372 switch (power_mode){ 5373 case HCI_POWER_ON: 5374 // do nothing 5375 break; 5376 case HCI_POWER_OFF: 5377 hci_power_enter_halting_state(); 5378 break; 5379 case HCI_POWER_SLEEP: 5380 // see hci_run 5381 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5382 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5383 break; 5384 default: 5385 btstack_assert(false); 5386 break; 5387 } 5388 return ERROR_CODE_SUCCESS; 5389 } 5390 5391 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5392 switch (power_mode){ 5393 case HCI_POWER_ON: 5394 hci_power_enter_initializing_state(); 5395 break; 5396 case HCI_POWER_OFF: 5397 // do nothing 5398 break; 5399 case HCI_POWER_SLEEP: 5400 // see hci_run 5401 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5402 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5403 break; 5404 default: 5405 btstack_assert(false); 5406 break; 5407 } 5408 return ERROR_CODE_SUCCESS; 5409 } 5410 5411 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5412 switch (power_mode){ 5413 case HCI_POWER_ON: 5414 hci_power_enter_initializing_state(); 5415 break; 5416 case HCI_POWER_OFF: 5417 hci_power_enter_halting_state(); 5418 break; 5419 case HCI_POWER_SLEEP: 5420 // do nothing 5421 break; 5422 default: 5423 btstack_assert(false); 5424 break; 5425 } 5426 return ERROR_CODE_SUCCESS; 5427 } 5428 5429 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5430 int err; 5431 switch (power_mode){ 5432 case HCI_POWER_ON: 5433 err = hci_power_control_wake(); 5434 if (err) return err; 5435 hci_power_enter_initializing_state(); 5436 break; 5437 case HCI_POWER_OFF: 5438 hci_power_enter_halting_state(); 5439 break; 5440 case HCI_POWER_SLEEP: 5441 // do nothing 5442 break; 5443 default: 5444 btstack_assert(false); 5445 break; 5446 } 5447 return ERROR_CODE_SUCCESS; 5448 } 5449 5450 int hci_power_control(HCI_POWER_MODE power_mode){ 5451 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5452 btstack_run_loop_remove_timer(&hci_stack->timeout); 5453 int err = 0; 5454 switch (hci_stack->state){ 5455 case HCI_STATE_OFF: 5456 err = hci_power_control_state_off(power_mode); 5457 break; 5458 case HCI_STATE_INITIALIZING: 5459 err = hci_power_control_state_initializing(power_mode); 5460 break; 5461 case HCI_STATE_WORKING: 5462 err = hci_power_control_state_working(power_mode); 5463 break; 5464 case HCI_STATE_HALTING: 5465 err = hci_power_control_state_halting(power_mode); 5466 break; 5467 case HCI_STATE_FALLING_ASLEEP: 5468 err = hci_power_control_state_falling_asleep(power_mode); 5469 break; 5470 case HCI_STATE_SLEEPING: 5471 err = hci_power_control_state_sleeping(power_mode); 5472 break; 5473 default: 5474 btstack_assert(false); 5475 break; 5476 } 5477 if (err != 0){ 5478 return err; 5479 } 5480 5481 // create internal event 5482 hci_emit_state(); 5483 5484 // trigger next/first action 5485 hci_run(); 5486 5487 return 0; 5488 } 5489 5490 5491 static void hci_halting_run(void) { 5492 5493 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5494 5495 hci_connection_t *connection; 5496 #ifdef ENABLE_BLE 5497 #ifdef ENABLE_LE_PERIPHERAL 5498 bool stop_advertismenets; 5499 #endif 5500 #endif 5501 5502 switch (hci_stack->substate) { 5503 case HCI_HALTING_CLASSIC_STOP: 5504 #ifdef ENABLE_CLASSIC 5505 if (!hci_can_send_command_packet_now()) return; 5506 5507 if (hci_stack->connectable || hci_stack->discoverable){ 5508 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5509 hci_send_cmd(&hci_write_scan_enable, 0); 5510 return; 5511 } 5512 #endif 5513 /* fall through */ 5514 5515 case HCI_HALTING_LE_ADV_STOP: 5516 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5517 5518 #ifdef ENABLE_BLE 5519 #ifdef ENABLE_LE_PERIPHERAL 5520 if (!hci_can_send_command_packet_now()) return; 5521 5522 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5523 5524 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5525 if (hci_le_extended_advertising_supported()){ 5526 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5527 btstack_linked_list_iterator_t it; 5528 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5529 // stop all periodic advertisements and check if an extended set is active 5530 while (btstack_linked_list_iterator_has_next(&it)){ 5531 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5532 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5533 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5534 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5535 return; 5536 } 5537 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5538 stop_advertismenets = true; 5539 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5540 } 5541 } 5542 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5543 if (stop_advertismenets){ 5544 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5545 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5546 return; 5547 } 5548 } else 5549 #else /* ENABLE_LE_PERIPHERAL */ 5550 { 5551 if (stop_advertismenets) { 5552 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5553 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5554 return; 5555 } 5556 } 5557 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5558 #endif /* ENABLE_LE_PERIPHERAL */ 5559 #endif /* ENABLE_BLE */ 5560 5561 /* fall through */ 5562 5563 case HCI_HALTING_LE_SCAN_STOP: 5564 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5565 if (!hci_can_send_command_packet_now()) return; 5566 5567 #ifdef ENABLE_BLE 5568 #ifdef ENABLE_LE_CENTRAL 5569 if (hci_stack->le_scanning_active){ 5570 hci_le_scan_stop(); 5571 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5572 return; 5573 } 5574 #endif 5575 #endif 5576 5577 /* fall through */ 5578 5579 case HCI_HALTING_DISCONNECT_ALL: 5580 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5581 if (!hci_can_send_command_packet_now()) return; 5582 5583 // close all open connections 5584 connection = (hci_connection_t *) hci_stack->connections; 5585 if (connection) { 5586 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5587 5588 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5589 5590 // check state 5591 switch(connection->state) { 5592 case SENT_DISCONNECT: 5593 case RECEIVED_DISCONNECTION_COMPLETE: 5594 // wait until connection is gone 5595 return; 5596 default: 5597 break; 5598 } 5599 5600 // finally, send the disconnect command 5601 connection->state = SENT_DISCONNECT; 5602 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5603 return; 5604 } 5605 5606 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5607 // stop BIGs and BIG Syncs 5608 if (hci_stack->le_audio_bigs != NULL){ 5609 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5610 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5611 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5612 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5613 return; 5614 } 5615 if (hci_stack->le_audio_big_syncs != NULL){ 5616 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5617 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5618 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5619 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5620 return; 5621 } 5622 #endif 5623 5624 btstack_run_loop_remove_timer(&hci_stack->timeout); 5625 5626 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5627 log_info("HCI_STATE_HALTING: wait 50 ms"); 5628 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5629 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5630 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5631 btstack_run_loop_add_timer(&hci_stack->timeout); 5632 break; 5633 5634 case HCI_HALTING_W4_CLOSE_TIMER: 5635 // keep waiting 5636 break; 5637 5638 case HCI_HALTING_CLOSE: 5639 // close left over connections (that had not been properly closed before) 5640 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5641 hci_discard_connections(); 5642 5643 log_info("HCI_STATE_HALTING, calling off"); 5644 5645 // switch mode 5646 hci_power_control_off(); 5647 5648 log_info("HCI_STATE_HALTING, emitting state"); 5649 hci_emit_state(); 5650 log_info("HCI_STATE_HALTING, done"); 5651 break; 5652 5653 default: 5654 break; 5655 } 5656 }; 5657 5658 static void hci_falling_asleep_run(void){ 5659 hci_connection_t * connection; 5660 switch(hci_stack->substate) { 5661 case HCI_FALLING_ASLEEP_DISCONNECT: 5662 log_info("HCI_STATE_FALLING_ASLEEP"); 5663 // close all open connections 5664 connection = (hci_connection_t *) hci_stack->connections; 5665 if (connection){ 5666 5667 // send disconnect 5668 if (!hci_can_send_command_packet_now()) return; 5669 5670 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5671 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5672 5673 // send disconnected event right away - causes higher layer connections to get closed, too. 5674 hci_shutdown_connection(connection); 5675 return; 5676 } 5677 5678 if (hci_classic_supported()){ 5679 // disable page and inquiry scan 5680 if (!hci_can_send_command_packet_now()) return; 5681 5682 log_info("HCI_STATE_HALTING, disabling inq scans"); 5683 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5684 5685 // continue in next sub state 5686 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5687 break; 5688 } 5689 5690 /* fall through */ 5691 5692 case HCI_FALLING_ASLEEP_COMPLETE: 5693 log_info("HCI_STATE_HALTING, calling sleep"); 5694 // switch mode 5695 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5696 hci_emit_state(); 5697 break; 5698 5699 default: 5700 break; 5701 } 5702 } 5703 5704 #ifdef ENABLE_CLASSIC 5705 5706 static void hci_update_scan_enable(void){ 5707 // 2 = page scan, 1 = inq scan 5708 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5709 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5710 hci_run(); 5711 } 5712 5713 void gap_discoverable_control(uint8_t enable){ 5714 if (enable) enable = 1; // normalize argument 5715 5716 if (hci_stack->discoverable == enable){ 5717 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5718 return; 5719 } 5720 5721 hci_stack->discoverable = enable; 5722 hci_update_scan_enable(); 5723 } 5724 5725 void gap_connectable_control(uint8_t enable){ 5726 if (enable) enable = 1; // normalize argument 5727 5728 // don't emit event 5729 if (hci_stack->connectable == enable) return; 5730 5731 hci_stack->connectable = enable; 5732 hci_update_scan_enable(); 5733 } 5734 #endif 5735 5736 void gap_local_bd_addr(bd_addr_t address_buffer){ 5737 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5738 } 5739 5740 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5741 static void hci_host_num_completed_packets(void){ 5742 5743 // create packet manually as arrays are not supported and num_commands should not get reduced 5744 hci_reserve_packet_buffer(); 5745 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5746 5747 uint16_t size = 0; 5748 uint16_t num_handles = 0; 5749 packet[size++] = 0x35; 5750 packet[size++] = 0x0c; 5751 size++; // skip param len 5752 size++; // skip num handles 5753 5754 // add { handle, packets } entries 5755 btstack_linked_item_t * it; 5756 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5757 hci_connection_t * connection = (hci_connection_t *) it; 5758 if (connection->num_packets_completed){ 5759 little_endian_store_16(packet, size, connection->con_handle); 5760 size += 2; 5761 little_endian_store_16(packet, size, connection->num_packets_completed); 5762 size += 2; 5763 // 5764 num_handles++; 5765 connection->num_packets_completed = 0; 5766 } 5767 } 5768 5769 packet[2] = size - 3; 5770 packet[3] = num_handles; 5771 5772 hci_stack->host_completed_packets = 0; 5773 5774 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5775 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5776 5777 // release packet buffer for synchronous transport implementations 5778 if (hci_transport_synchronous()){ 5779 hci_release_packet_buffer(); 5780 hci_emit_transport_packet_sent(); 5781 } 5782 } 5783 #endif 5784 5785 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5786 UNUSED(ds); 5787 hci_stack->substate = HCI_HALTING_CLOSE; 5788 hci_halting_run(); 5789 } 5790 5791 static bool hci_run_acl_fragments(void){ 5792 if (hci_stack->acl_fragmentation_total_size > 0u) { 5793 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5794 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5795 if (connection) { 5796 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5797 hci_send_acl_packet_fragments(connection); 5798 return true; 5799 } 5800 } else { 5801 // connection gone -> discard further fragments 5802 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5803 hci_stack->acl_fragmentation_total_size = 0; 5804 hci_stack->acl_fragmentation_pos = 0; 5805 } 5806 } 5807 return false; 5808 } 5809 5810 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5811 static bool hci_run_iso_fragments(void){ 5812 if (hci_stack->iso_fragmentation_total_size > 0u) { 5813 // TODO: flow control 5814 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5815 hci_send_iso_packet_fragments(); 5816 return true; 5817 } 5818 } 5819 return false; 5820 } 5821 #endif 5822 5823 #ifdef ENABLE_CLASSIC 5824 5825 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5826 static bool hci_classic_operation_active(void) { 5827 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5828 return true; 5829 } 5830 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5831 return true; 5832 } 5833 btstack_linked_item_t * it; 5834 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5835 hci_connection_t *connection = (hci_connection_t *) it; 5836 switch (connection->state) { 5837 case SENT_CREATE_CONNECTION: 5838 case SENT_CANCEL_CONNECTION: 5839 case SENT_DISCONNECT: 5840 return true; 5841 default: 5842 break; 5843 } 5844 } 5845 return false; 5846 } 5847 #endif 5848 5849 static bool hci_run_general_gap_classic(void){ 5850 5851 // assert stack is working and classic is active 5852 if (hci_classic_supported() == false) return false; 5853 if (hci_stack->state != HCI_STATE_WORKING) return false; 5854 5855 // decline incoming connections 5856 if (hci_stack->decline_reason){ 5857 uint8_t reason = hci_stack->decline_reason; 5858 hci_stack->decline_reason = 0; 5859 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5860 return true; 5861 } 5862 5863 if (hci_stack->gap_tasks_classic != 0){ 5864 hci_run_gap_tasks_classic(); 5865 return true; 5866 } 5867 5868 // start/stop inquiry 5869 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5870 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5871 if (hci_classic_operation_active() == false) 5872 #endif 5873 { 5874 uint8_t duration = hci_stack->inquiry_state; 5875 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5876 if (hci_stack->inquiry_max_period_length != 0){ 5877 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); 5878 } else { 5879 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5880 } 5881 return true; 5882 } 5883 } 5884 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5885 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5886 hci_send_cmd(&hci_inquiry_cancel); 5887 return true; 5888 } 5889 5890 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5891 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5892 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5893 return true; 5894 } 5895 5896 // remote name request 5897 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5898 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5899 if (hci_classic_operation_active() == false) 5900 #endif 5901 { 5902 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5903 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5904 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5905 return true; 5906 } 5907 } 5908 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5909 // Local OOB data 5910 if (hci_stack->classic_read_local_oob_data){ 5911 hci_stack->classic_read_local_oob_data = false; 5912 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5913 hci_send_cmd(&hci_read_local_extended_oob_data); 5914 } else { 5915 hci_send_cmd(&hci_read_local_oob_data); 5916 } 5917 } 5918 #endif 5919 // pairing 5920 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5921 uint8_t state = hci_stack->gap_pairing_state; 5922 uint8_t pin_code[PIN_CODE_LEN]; 5923 switch (state){ 5924 case GAP_PAIRING_STATE_SEND_PIN: 5925 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5926 memset(pin_code, 0, 16); 5927 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5928 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5929 break; 5930 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5931 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5932 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5933 break; 5934 case GAP_PAIRING_STATE_SEND_PASSKEY: 5935 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5936 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5937 break; 5938 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5939 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5940 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5941 break; 5942 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5943 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5944 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5945 break; 5946 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5947 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5948 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5949 break; 5950 default: 5951 break; 5952 } 5953 return true; 5954 } 5955 return false; 5956 } 5957 #endif 5958 5959 #ifdef ENABLE_BLE 5960 5961 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5962 static uint8_t hci_le_num_phys(uint8_t phys){ 5963 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5964 btstack_assert(phys); 5965 return num_bits_set[phys]; 5966 } 5967 #endif 5968 5969 #ifdef ENABLE_LE_CENTRAL 5970 static void hci_le_scan_stop(void){ 5971 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5972 if (hci_le_extended_advertising_supported()) { 5973 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5974 } else 5975 #endif 5976 { 5977 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5978 } 5979 } 5980 5981 static void 5982 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5983 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5984 if (hci_le_extended_advertising_supported()) { 5985 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5986 uint16_t le_connection_scan_interval[3]; 5987 uint16_t le_connection_scan_window[3]; 5988 uint16_t le_connection_interval_min[3]; 5989 uint16_t le_connection_interval_max[3]; 5990 uint16_t le_connection_latency[3]; 5991 uint16_t le_supervision_timeout[3]; 5992 uint16_t le_minimum_ce_length[3]; 5993 uint16_t le_maximum_ce_length[3]; 5994 5995 uint8_t i; 5996 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5997 for (i=0;i<num_phys;i++){ 5998 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5999 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6000 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6001 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6002 le_connection_latency[i] = hci_stack->le_connection_latency; 6003 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6004 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6005 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6006 } 6007 hci_send_cmd(&hci_le_extended_create_connection, 6008 initiator_filter_policy, 6009 hci_stack->le_connection_own_addr_type, // our addr type: 6010 address_type, // peer address type 6011 address, // peer bd addr 6012 hci_stack->le_connection_phys, // initiating PHY 6013 le_connection_scan_interval, // conn scan interval 6014 le_connection_scan_window, // conn scan windows 6015 le_connection_interval_min, // conn interval min 6016 le_connection_interval_max, // conn interval max 6017 le_connection_latency, // conn latency 6018 le_supervision_timeout, // conn latency 6019 le_minimum_ce_length, // min ce length 6020 le_maximum_ce_length // max ce length 6021 ); 6022 } else 6023 #endif 6024 { 6025 hci_send_cmd(&hci_le_create_connection, 6026 hci_stack->le_connection_scan_interval, // conn scan interval 6027 hci_stack->le_connection_scan_window, // conn scan windows 6028 initiator_filter_policy, // don't use whitelist 6029 address_type, // peer address type 6030 address, // peer bd addr 6031 hci_stack->le_connection_own_addr_type, // our addr type: 6032 hci_stack->le_connection_interval_min, // conn interval min 6033 hci_stack->le_connection_interval_max, // conn interval max 6034 hci_stack->le_connection_latency, // conn latency 6035 hci_stack->le_supervision_timeout, // conn latency 6036 hci_stack->le_minimum_ce_length, // min ce length 6037 hci_stack->le_maximum_ce_length // max ce length 6038 ); 6039 } 6040 } 6041 #endif 6042 6043 #ifdef ENABLE_LE_PERIPHERAL 6044 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6045 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6046 uint8_t operation = 0; 6047 if (pos == 0){ 6048 // first fragment or complete data 6049 operation |= 1; 6050 } 6051 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6052 // last fragment or complete data 6053 operation |= 2; 6054 } 6055 return operation; 6056 } 6057 #endif 6058 #endif 6059 6060 static bool hci_run_general_gap_le(void){ 6061 6062 btstack_linked_list_iterator_t lit; 6063 6064 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6065 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6066 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6067 hci_stack->le_resolvable_private_address_update_s = 0; 6068 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6069 return true; 6070 } 6071 #endif 6072 6073 // Phase 1: collect what to stop 6074 6075 #ifdef ENABLE_LE_CENTRAL 6076 bool scanning_stop = false; 6077 bool connecting_stop = false; 6078 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6079 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6080 bool periodic_sync_stop = false; 6081 #endif 6082 #endif 6083 #endif 6084 6085 #ifdef ENABLE_LE_PERIPHERAL 6086 bool advertising_stop = false; 6087 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6088 le_advertising_set_t * advertising_stop_set = NULL; 6089 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6090 bool periodic_advertising_stop = false; 6091 #endif 6092 #endif 6093 #endif 6094 6095 // check if own address changes 6096 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6097 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6098 6099 // check if whitelist needs modification 6100 bool whitelist_modification_pending = false; 6101 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6102 while (btstack_linked_list_iterator_has_next(&lit)){ 6103 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6104 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6105 whitelist_modification_pending = true; 6106 break; 6107 } 6108 } 6109 6110 // check if resolving list needs modification 6111 bool resolving_list_modification_pending = false; 6112 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6113 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6114 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6115 resolving_list_modification_pending = true; 6116 } 6117 #endif 6118 6119 #ifdef ENABLE_LE_CENTRAL 6120 6121 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6122 // check if periodic advertiser list needs modification 6123 bool periodic_list_modification_pending = false; 6124 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6125 while (btstack_linked_list_iterator_has_next(&lit)){ 6126 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6127 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6128 periodic_list_modification_pending = true; 6129 break; 6130 } 6131 } 6132 #endif 6133 6134 // scanning control 6135 if (hci_stack->le_scanning_active) { 6136 // stop if: 6137 // - parameter change required 6138 // - it's disabled 6139 // - whitelist change required but used for scanning 6140 // - resolving list modified 6141 // - own address changes 6142 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6143 if ((hci_stack->le_scanning_param_update) || 6144 !hci_stack->le_scanning_enabled || 6145 (scanning_uses_whitelist && whitelist_modification_pending) || 6146 resolving_list_modification_pending || 6147 random_address_change){ 6148 6149 scanning_stop = true; 6150 } 6151 } 6152 6153 // connecting control 6154 bool connecting_with_whitelist; 6155 switch (hci_stack->le_connecting_state){ 6156 case LE_CONNECTING_DIRECT: 6157 case LE_CONNECTING_WHITELIST: 6158 // stop connecting if: 6159 // - connecting uses white and whitelist modification pending 6160 // - if it got disabled 6161 // - resolving list modified 6162 // - own address changes 6163 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6164 if ((connecting_with_whitelist && whitelist_modification_pending) || 6165 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6166 resolving_list_modification_pending || 6167 random_address_change) { 6168 6169 connecting_stop = true; 6170 } 6171 break; 6172 default: 6173 break; 6174 } 6175 6176 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6177 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6178 // periodic sync control 6179 bool sync_with_advertiser_list; 6180 switch(hci_stack->le_periodic_sync_state){ 6181 case LE_CONNECTING_DIRECT: 6182 case LE_CONNECTING_WHITELIST: 6183 // stop sync if: 6184 // - sync with advertiser list and advertiser list modification pending 6185 // - if it got disabled 6186 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6187 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6188 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6189 periodic_sync_stop = true; 6190 } 6191 break; 6192 default: 6193 break; 6194 } 6195 #endif 6196 #endif 6197 6198 #endif /* ENABLE_LE_CENTRAL */ 6199 6200 #ifdef ENABLE_LE_PERIPHERAL 6201 // le advertisement control 6202 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6203 // stop if: 6204 // - parameter change required 6205 // - random address used in advertising and changes 6206 // - it's disabled 6207 // - whitelist change required but used for advertisement filter policy 6208 // - resolving list modified 6209 // - own address changes 6210 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6211 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6212 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6213 if (advertising_change || 6214 (advertising_uses_random_address && random_address_change) || 6215 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6216 (advertising_uses_whitelist && whitelist_modification_pending) || 6217 resolving_list_modification_pending || 6218 random_address_change) { 6219 6220 advertising_stop = true; 6221 } 6222 } 6223 6224 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6225 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6226 btstack_linked_list_iterator_t it; 6227 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6228 while (btstack_linked_list_iterator_has_next(&it)){ 6229 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6230 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6231 // stop if: 6232 // - parameter change required 6233 // - random address used in connectable advertising and changes 6234 // - it's disabled 6235 // - whitelist change required but used for advertisement filter policy 6236 // - resolving list modified 6237 // - own address changes 6238 // - advertisement set will be removed 6239 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6240 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6241 bool advertising_uses_random_address = 6242 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6243 advertising_connectable; 6244 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6245 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6246 bool advertising_set_random_address_change = 6247 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6248 bool advertising_set_will_be_removed = 6249 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6250 if (advertising_parameter_change || 6251 (advertising_uses_random_address && advertising_set_random_address_change) || 6252 (advertising_enabled == false) || 6253 (advertising_uses_whitelist && whitelist_modification_pending) || 6254 resolving_list_modification_pending || 6255 advertising_set_will_be_removed) { 6256 6257 advertising_stop = true; 6258 advertising_stop_set = advertising_set; 6259 break; 6260 } 6261 } 6262 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6263 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6264 // stop if: 6265 // - it's disabled 6266 // - parameter change required 6267 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6268 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6269 if ((periodic_enabled == false) || periodic_parameter_change){ 6270 periodic_advertising_stop = true; 6271 advertising_stop_set = advertising_set; 6272 } 6273 } 6274 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6275 } 6276 } 6277 #endif 6278 6279 #endif 6280 6281 6282 // Phase 2: stop everything that should be off during modifications 6283 6284 6285 // 2.1 Outgoing connection 6286 #ifdef ENABLE_LE_CENTRAL 6287 if (connecting_stop){ 6288 hci_send_cmd(&hci_le_create_connection_cancel); 6289 return true; 6290 } 6291 #endif 6292 6293 // 2.2 Scanning 6294 #ifdef ENABLE_LE_CENTRAL 6295 if (scanning_stop){ 6296 hci_stack->le_scanning_active = false; 6297 hci_le_scan_stop(); 6298 return true; 6299 } 6300 6301 // 2.3 Periodic Sync 6302 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6303 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6304 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6305 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6306 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6307 return true; 6308 } 6309 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6310 if (periodic_sync_stop){ 6311 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6312 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6313 return true; 6314 } 6315 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6316 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6317 #endif /* ENABLE_LE_CENTRAL */ 6318 6319 // 2.4 Advertising: legacy, extended, periodic 6320 #ifdef ENABLE_LE_PERIPHERAL 6321 if (advertising_stop){ 6322 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6323 if (hci_le_extended_advertising_supported()) { 6324 uint8_t advertising_stop_handle; 6325 if (advertising_stop_set != NULL){ 6326 advertising_stop_handle = advertising_stop_set->advertising_handle; 6327 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6328 } else { 6329 advertising_stop_handle = 0; 6330 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6331 } 6332 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6333 const uint16_t durations[] = { 0 }; 6334 const uint16_t max_events[] = { 0 }; 6335 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6336 } else 6337 #endif 6338 { 6339 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6340 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6341 } 6342 return true; 6343 } 6344 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6345 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6346 if (periodic_advertising_stop){ 6347 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6348 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6349 return true; 6350 } 6351 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6352 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6353 #endif /* ENABLE_LE_PERIPHERAL */ 6354 6355 6356 // Phase 3: modify 6357 6358 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6359 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6360 // GAP Privacy, notify clients upon upcoming random address change 6361 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6362 gap_privacy_clients_notify(hci_stack->le_random_address); 6363 } 6364 6365 // - wait until privacy update completed 6366 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6367 return false; 6368 } 6369 6370 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6371 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6372 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6373 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6374 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6375 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6376 #endif 6377 return true; 6378 } 6379 6380 #ifdef ENABLE_LE_CENTRAL 6381 if (hci_stack->le_scanning_param_update){ 6382 hci_stack->le_scanning_param_update = false; 6383 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6384 if (hci_le_extended_advertising_supported()){ 6385 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6386 uint8_t scan_types[2]; 6387 uint16_t scan_intervals[2]; 6388 uint16_t scan_windows[2]; 6389 6390 uint8_t i; 6391 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6392 for (i=0;i<num_phys;i++){ 6393 scan_types[i] = hci_stack->le_scan_type; 6394 scan_intervals[i] = hci_stack->le_scan_interval; 6395 scan_windows[i] = hci_stack->le_scan_window; 6396 } 6397 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6398 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6399 } else 6400 #endif 6401 { 6402 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6403 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6404 } 6405 return true; 6406 } 6407 #endif 6408 6409 #ifdef ENABLE_LE_PERIPHERAL 6410 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6411 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6412 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6413 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6414 if (hci_le_extended_advertising_supported()){ 6415 // map advertisment type to advertising event properties 6416 uint16_t adv_event_properties = 0; 6417 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6418 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6419 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6420 } 6421 hci_stack->le_advertising_set_in_current_command = 0; 6422 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6423 0, 6424 adv_event_properties, 6425 hci_stack->le_advertisements_interval_min, 6426 hci_stack->le_advertisements_interval_max, 6427 hci_stack->le_advertisements_channel_map, 6428 hci_stack->le_advertisements_own_addr_type, 6429 hci_stack->le_advertisements_direct_address_type, 6430 hci_stack->le_advertisements_direct_address, 6431 hci_stack->le_advertisements_filter_policy, 6432 0x7f, // tx power: no preference 6433 0x01, // primary adv phy: LE 1M 6434 0, // secondary adv max skip 6435 0x01, // secondary adv phy 6436 0, // adv sid 6437 0 // scan request notification 6438 ); 6439 } else 6440 #endif 6441 { 6442 hci_send_cmd(&hci_le_set_advertising_parameters, 6443 hci_stack->le_advertisements_interval_min, 6444 hci_stack->le_advertisements_interval_max, 6445 hci_stack->le_advertisements_type, 6446 hci_stack->le_advertisements_own_addr_type, 6447 hci_stack->le_advertisements_direct_address_type, 6448 hci_stack->le_advertisements_direct_address, 6449 hci_stack->le_advertisements_channel_map, 6450 hci_stack->le_advertisements_filter_policy); 6451 } 6452 return true; 6453 } 6454 6455 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6456 // assumption: only set if extended advertising is supported 6457 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6458 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6459 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6460 return true; 6461 } 6462 #endif 6463 6464 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6465 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6466 uint8_t adv_data_clean[31]; 6467 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6468 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6469 hci_stack->le_advertisements_data_len); 6470 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6471 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6472 if (hci_le_extended_advertising_supported()){ 6473 hci_stack->le_advertising_set_in_current_command = 0; 6474 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6475 } else 6476 #endif 6477 { 6478 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6479 } 6480 return true; 6481 } 6482 6483 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6484 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6485 uint8_t scan_data_clean[31]; 6486 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6487 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6488 hci_stack->le_scan_response_data_len); 6489 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6490 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6491 if (hci_le_extended_advertising_supported()){ 6492 hci_stack->le_advertising_set_in_current_command = 0; 6493 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6494 } else 6495 #endif 6496 { 6497 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6498 } 6499 return true; 6500 } 6501 6502 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6503 if (hci_le_extended_advertising_supported()) { 6504 btstack_linked_list_iterator_t it; 6505 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6506 while (btstack_linked_list_iterator_has_next(&it)){ 6507 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6508 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6509 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6510 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6511 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6512 return true; 6513 } 6514 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6515 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6516 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6517 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6518 advertising_set->advertising_handle, 6519 advertising_set->extended_params.advertising_event_properties, 6520 advertising_set->extended_params.primary_advertising_interval_min, 6521 advertising_set->extended_params.primary_advertising_interval_max, 6522 advertising_set->extended_params.primary_advertising_channel_map, 6523 advertising_set->extended_params.own_address_type, 6524 advertising_set->extended_params.peer_address_type, 6525 advertising_set->extended_params.peer_address, 6526 advertising_set->extended_params.advertising_filter_policy, 6527 advertising_set->extended_params.advertising_tx_power, 6528 advertising_set->extended_params.primary_advertising_phy, 6529 advertising_set->extended_params.secondary_advertising_max_skip, 6530 advertising_set->extended_params.secondary_advertising_phy, 6531 advertising_set->extended_params.advertising_sid, 6532 advertising_set->extended_params.scan_request_notification_enable 6533 ); 6534 return true; 6535 } 6536 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6537 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6538 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6539 return true; 6540 } 6541 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6542 uint16_t pos = advertising_set->adv_data_pos; 6543 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6544 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6545 if ((operation & 0x02) != 0){ 6546 // last fragment or complete data 6547 operation |= 2; 6548 advertising_set->adv_data_pos = 0; 6549 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6550 } else { 6551 advertising_set->adv_data_pos += data_to_upload; 6552 } 6553 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6554 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6555 return true; 6556 } 6557 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6558 uint16_t pos = advertising_set->scan_data_pos; 6559 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6560 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6561 if ((operation & 0x02) != 0){ 6562 advertising_set->scan_data_pos = 0; 6563 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6564 } else { 6565 advertising_set->scan_data_pos += data_to_upload; 6566 } 6567 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6568 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6569 return true; 6570 } 6571 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6572 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6573 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6574 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6575 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6576 advertising_set->advertising_handle, 6577 advertising_set->periodic_params.periodic_advertising_interval_min, 6578 advertising_set->periodic_params.periodic_advertising_interval_max, 6579 advertising_set->periodic_params.periodic_advertising_properties); 6580 return true; 6581 } 6582 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6583 uint16_t pos = advertising_set->periodic_data_pos; 6584 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6585 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6586 if ((operation & 0x02) != 0){ 6587 // last fragment or complete data 6588 operation |= 2; 6589 advertising_set->periodic_data_pos = 0; 6590 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6591 } else { 6592 advertising_set->periodic_data_pos += data_to_upload; 6593 } 6594 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6595 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6596 return true; 6597 } 6598 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6599 } 6600 } 6601 #endif 6602 6603 #endif 6604 6605 #ifdef ENABLE_LE_CENTRAL 6606 // if connect with whitelist was active and is not cancelled yet, wait until next time 6607 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6608 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6609 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6610 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6611 #endif 6612 #endif 6613 6614 // LE Whitelist Management 6615 if (whitelist_modification_pending){ 6616 // add/remove entries 6617 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6618 while (btstack_linked_list_iterator_has_next(&lit)){ 6619 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6620 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6621 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6622 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6623 bd_addr_type_t address_type = entry->address_type; 6624 bd_addr_t address; 6625 memcpy(address, entry->address, 6); 6626 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6627 // remove from whitelist if not scheduled for re-addition 6628 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6629 btstack_memory_whitelist_entry_free(entry); 6630 } 6631 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6632 return true; 6633 } 6634 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6635 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6636 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6637 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6638 return true; 6639 } 6640 } 6641 } 6642 6643 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6644 // LE Resolving List Management 6645 if (resolving_list_modification_pending) { 6646 uint16_t i; 6647 uint8_t null_16[16]; 6648 uint8_t local_irk_flipped[16]; 6649 const uint8_t *local_irk; 6650 switch (hci_stack->le_resolving_list_state) { 6651 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6652 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6653 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6654 return true; 6655 case LE_RESOLVING_LIST_READ_SIZE: 6656 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6657 hci_send_cmd(&hci_le_read_resolving_list_size); 6658 return true; 6659 case LE_RESOLVING_LIST_SEND_CLEAR: 6660 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6661 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6662 sizeof(hci_stack->le_resolving_list_add_entries)); 6663 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6664 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6665 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6666 sizeof(hci_stack->le_resolving_list_remove_entries)); 6667 hci_send_cmd(&hci_le_clear_resolving_list); 6668 return true; 6669 case LE_RESOLVING_LIST_SET_IRK: 6670 // set IRK used by RPA for undirected advertising 6671 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6672 local_irk = gap_get_persistent_irk(); 6673 reverse_128(local_irk, local_irk_flipped); 6674 memset(null_16, 0, sizeof(null_16)); 6675 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6676 null_16, local_irk_flipped); 6677 return true; 6678 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6679 // first remove old entries 6680 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6681 uint8_t offset = i >> 3; 6682 uint8_t mask = 1 << (i & 7); 6683 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6684 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6685 bd_addr_t peer_identity_addreses; 6686 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6687 sm_key_t peer_irk; 6688 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6689 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6690 6691 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6692 // trigger whitelist entry 'update' (work around for controller bug) 6693 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6694 while (btstack_linked_list_iterator_has_next(&lit)) { 6695 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6696 if (entry->address_type != peer_identity_addr_type) continue; 6697 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6698 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6699 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6700 } 6701 #endif 6702 6703 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6704 peer_identity_addreses); 6705 return true; 6706 } 6707 6708 // then add new entries 6709 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6710 uint8_t offset = i >> 3; 6711 uint8_t mask = 1 << (i & 7); 6712 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6713 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6714 bd_addr_t peer_identity_addreses; 6715 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6716 sm_key_t peer_irk; 6717 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6718 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6719 if (btstack_is_null(peer_irk, 16)) continue; 6720 local_irk = gap_get_persistent_irk(); 6721 // command uses format specifier 'P' that stores 16-byte value without flip 6722 uint8_t peer_irk_flipped[16]; 6723 reverse_128(local_irk, local_irk_flipped); 6724 reverse_128(peer_irk, peer_irk_flipped); 6725 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6726 peer_irk_flipped, local_irk_flipped); 6727 return true; 6728 } 6729 6730 // finally, set privacy mode 6731 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6732 uint8_t offset = i >> 3; 6733 uint8_t mask = 1 << (i & 7); 6734 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6735 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6736 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6737 // Network Privacy Mode is default 6738 continue; 6739 } 6740 bd_addr_t peer_identity_address; 6741 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6742 sm_key_t peer_irk; 6743 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6744 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6745 if (btstack_is_null(peer_irk, 16)) continue; 6746 // command uses format specifier 'P' that stores 16-byte value without flip 6747 uint8_t peer_irk_flipped[16]; 6748 reverse_128(peer_irk, peer_irk_flipped); 6749 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6750 return true; 6751 } 6752 break; 6753 6754 default: 6755 break; 6756 } 6757 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6758 } 6759 #endif 6760 6761 #ifdef ENABLE_LE_CENTRAL 6762 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6763 // LE Whitelist Management 6764 if (periodic_list_modification_pending){ 6765 // add/remove entries 6766 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6767 while (btstack_linked_list_iterator_has_next(&lit)){ 6768 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6769 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6770 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6771 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6772 return true; 6773 } 6774 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6775 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6776 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6777 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6778 return true; 6779 } 6780 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6781 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6782 btstack_memory_periodic_advertiser_list_entry_free(entry); 6783 } 6784 } 6785 } 6786 #endif 6787 #endif 6788 6789 #ifdef ENABLE_LE_CENTRAL 6790 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6791 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6792 if (hci_stack->le_past_set_default_params){ 6793 hci_stack->le_past_set_default_params = false; 6794 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6795 hci_stack->le_past_mode, 6796 hci_stack->le_past_skip, 6797 hci_stack->le_past_sync_timeout, 6798 hci_stack->le_past_cte_type); 6799 return true; 6800 } 6801 #endif 6802 #endif 6803 #endif 6804 6805 // post-pone all actions until stack is fully working 6806 if (hci_stack->state != HCI_STATE_WORKING) return false; 6807 6808 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6809 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6810 6811 // Phase 4: restore state 6812 6813 #ifdef ENABLE_LE_CENTRAL 6814 // re-start scanning 6815 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6816 hci_stack->le_scanning_active = true; 6817 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6818 if (hci_le_extended_advertising_supported()){ 6819 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6820 } else 6821 #endif 6822 { 6823 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6824 } 6825 return true; 6826 } 6827 #endif 6828 6829 #ifdef ENABLE_LE_CENTRAL 6830 // re-start connecting 6831 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6832 bd_addr_t null_addr; 6833 memset(null_addr, 0, 6); 6834 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6835 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6836 hci_send_le_create_connection(1, 0, null_addr); 6837 return true; 6838 } 6839 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6840 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6841 switch(hci_stack->le_periodic_sync_request){ 6842 case LE_CONNECTING_DIRECT: 6843 case LE_CONNECTING_WHITELIST: 6844 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6845 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6846 hci_stack->le_periodic_sync_options, 6847 hci_stack->le_periodic_sync_advertising_sid, 6848 hci_stack->le_periodic_sync_advertiser_address_type, 6849 hci_stack->le_periodic_sync_advertiser_address, 6850 hci_stack->le_periodic_sync_skip, 6851 hci_stack->le_periodic_sync_timeout, 6852 hci_stack->le_periodic_sync_cte_type); 6853 return true; 6854 default: 6855 break; 6856 } 6857 } 6858 #endif 6859 #endif 6860 6861 #ifdef ENABLE_LE_PERIPHERAL 6862 // re-start advertising 6863 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6864 // check if advertisements should be enabled given 6865 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6866 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6867 6868 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6869 if (hci_le_extended_advertising_supported()){ 6870 const uint8_t advertising_handles[] = { 0 }; 6871 const uint16_t durations[] = { 0 }; 6872 const uint16_t max_events[] = { 0 }; 6873 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6874 } else 6875 #endif 6876 { 6877 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6878 } 6879 return true; 6880 } 6881 6882 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6883 if (hci_le_extended_advertising_supported()) { 6884 btstack_linked_list_iterator_t it; 6885 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6886 while (btstack_linked_list_iterator_has_next(&it)) { 6887 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6888 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6889 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6890 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6891 const uint16_t durations[] = { advertising_set->enable_timeout }; 6892 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6893 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6894 return true; 6895 } 6896 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6897 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6898 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6899 uint8_t enable = 1; 6900 if (advertising_set->periodic_include_adi){ 6901 enable |= 2; 6902 } 6903 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6904 return true; 6905 } 6906 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6907 } 6908 } 6909 #endif 6910 #endif 6911 6912 return false; 6913 } 6914 6915 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6916 static bool hci_run_iso_tasks(void){ 6917 btstack_linked_list_iterator_t it; 6918 6919 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6920 return false; 6921 } 6922 6923 // BIG 6924 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6925 while (btstack_linked_list_iterator_has_next(&it)){ 6926 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6927 switch (big->state){ 6928 case LE_AUDIO_BIG_STATE_CREATE: 6929 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6930 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6931 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6932 hci_send_cmd(&hci_le_create_big, 6933 big->params->big_handle, 6934 big->params->advertising_handle, 6935 big->params->num_bis, 6936 big->params->sdu_interval_us, 6937 big->params->max_sdu, 6938 big->params->max_transport_latency_ms, 6939 big->params->rtn, 6940 big->params->phy, 6941 big->params->packing, 6942 big->params->framing, 6943 big->params->encryption, 6944 big->params->broadcast_code); 6945 return true; 6946 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6947 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6948 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 6949 return true; 6950 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6951 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6952 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6953 return true; 6954 case LE_AUDIO_BIG_STATE_TERMINATE: 6955 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6956 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6957 return true; 6958 default: 6959 break; 6960 } 6961 } 6962 6963 // BIG Sync 6964 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6965 while (btstack_linked_list_iterator_has_next(&it)){ 6966 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6967 switch (big_sync->state){ 6968 case LE_AUDIO_BIG_STATE_CREATE: 6969 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6970 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6971 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6972 hci_send_cmd(&hci_le_big_create_sync, 6973 big_sync->params->big_handle, 6974 big_sync->params->sync_handle, 6975 big_sync->params->encryption, 6976 big_sync->params->broadcast_code, 6977 big_sync->params->mse, 6978 big_sync->params->big_sync_timeout_10ms, 6979 big_sync->params->num_bis, 6980 big_sync->params->bis_indices); 6981 return true; 6982 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6983 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6984 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 6985 return true; 6986 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6987 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6988 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6989 return true; 6990 case LE_AUDIO_BIG_STATE_TERMINATE: 6991 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6992 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6993 return true; 6994 default: 6995 break; 6996 } 6997 } 6998 6999 // CIG 7000 bool cig_active; 7001 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7002 while (btstack_linked_list_iterator_has_next(&it)) { 7003 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7004 uint8_t i; 7005 // Set CIG Parameters 7006 uint8_t cis_id[MAX_NR_CIS]; 7007 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7008 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7009 uint8_t phy_c_to_p[MAX_NR_CIS]; 7010 uint8_t phy_p_to_c[MAX_NR_CIS]; 7011 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7012 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7013 switch (cig->state) { 7014 case LE_AUDIO_CIG_STATE_CREATE: 7015 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7016 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7017 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7018 le_audio_cig_params_t * params = cig->params; 7019 for (i = 0; i < params->num_cis; i++) { 7020 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7021 cis_id[i] = cis_params->cis_id; 7022 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7023 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7024 phy_c_to_p[i] = cis_params->phy_c_to_p; 7025 phy_p_to_c[i] = cis_params->phy_p_to_c; 7026 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7027 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7028 } 7029 hci_send_cmd(&hci_le_set_cig_parameters, 7030 cig->cig_id, 7031 params->sdu_interval_c_to_p, 7032 params->sdu_interval_p_to_c, 7033 params->worst_case_sca, 7034 params->packing, 7035 params->framing, 7036 params->max_transport_latency_c_to_p, 7037 params->max_transport_latency_p_to_c, 7038 params->num_cis, 7039 cis_id, 7040 max_sdu_c_to_p, 7041 max_sdu_p_to_c, 7042 phy_c_to_p, 7043 phy_p_to_c, 7044 rtn_c_to_p, 7045 rtn_p_to_c 7046 ); 7047 return true; 7048 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7049 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7050 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7051 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7052 for (i=0;i<cig->num_cis;i++){ 7053 cig->cis_setup_active[i] = true; 7054 } 7055 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7056 return true; 7057 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7058 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7059 // find next path to setup 7060 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7061 if (cig->cis_established[cis_index] == false) { 7062 continue; 7063 } 7064 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7065 bool setup = true; 7066 if (cis_direction == 0){ 7067 // 0 - input - host to controller 7068 // we are central => central to peripheral 7069 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7070 } else { 7071 // 1 - output - controller to host 7072 // we are central => peripheral to central 7073 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7074 } 7075 if (setup){ 7076 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7077 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7078 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7079 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7080 return true; 7081 } 7082 cig->state_vars.next_cis++; 7083 } 7084 // emit done 7085 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7086 break; 7087 case LE_AUDIO_CIG_STATE_REMOVE: 7088 // check if CIG Active 7089 cig_active = false; 7090 for (i = 0; i < cig->num_cis; i++) { 7091 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7092 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7093 if (stream != NULL){ 7094 cig_active = true; 7095 break; 7096 } 7097 } 7098 } 7099 if (cig_active == false){ 7100 btstack_linked_list_iterator_remove(&it); 7101 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7102 return true; 7103 } 7104 default: 7105 break; 7106 } 7107 } 7108 7109 // CIS Accept/Reject/Setup ISO Path/Close 7110 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7111 while (btstack_linked_list_iterator_has_next(&it)) { 7112 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7113 hci_con_handle_t con_handle; 7114 switch (iso_stream->state){ 7115 case HCI_ISO_STREAM_W2_ACCEPT: 7116 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7117 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7118 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7119 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7120 return true; 7121 case HCI_ISO_STREAM_W2_REJECT: 7122 con_handle = iso_stream->cis_handle; 7123 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7124 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7125 hci_iso_stream_finalize(iso_stream); 7126 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7127 return true; 7128 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7129 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7130 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7131 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7132 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7133 break; 7134 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7135 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7136 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7137 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7138 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7139 break; 7140 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7141 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7142 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle); 7143 break; 7144 default: 7145 break; 7146 } 7147 } 7148 7149 return false; 7150 } 7151 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7152 #endif 7153 7154 static bool hci_run_general_pending_commands(void){ 7155 btstack_linked_item_t * it; 7156 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7157 hci_connection_t * connection = (hci_connection_t *) it; 7158 7159 switch(connection->state){ 7160 case SEND_CREATE_CONNECTION: 7161 switch(connection->address_type){ 7162 #ifdef ENABLE_CLASSIC 7163 case BD_ADDR_TYPE_ACL: 7164 log_info("sending hci_create_connection"); 7165 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7166 break; 7167 #endif 7168 default: 7169 #ifdef ENABLE_BLE 7170 #ifdef ENABLE_LE_CENTRAL 7171 log_info("sending hci_le_create_connection"); 7172 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7173 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7174 hci_send_le_create_connection(0, connection->address_type, connection->address); 7175 connection->state = SENT_CREATE_CONNECTION; 7176 #endif 7177 #endif 7178 break; 7179 } 7180 return true; 7181 7182 #ifdef ENABLE_CLASSIC 7183 case RECEIVED_CONNECTION_REQUEST: 7184 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7185 log_info("sending hci_accept_connection_request"); 7186 connection->state = ACCEPTED_CONNECTION_REQUEST; 7187 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7188 return true; 7189 } 7190 break; 7191 #endif 7192 case SEND_DISCONNECT: 7193 connection->state = SENT_DISCONNECT; 7194 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7195 return true; 7196 7197 default: 7198 break; 7199 } 7200 7201 // no further commands if connection is about to get shut down 7202 if (connection->state == SENT_DISCONNECT) continue; 7203 7204 #ifdef ENABLE_CLASSIC 7205 7206 // Handling link key request requires remote supported features 7207 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7208 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7209 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7210 7211 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7212 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7213 if (have_link_key && security_level_sufficient){ 7214 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7215 } else { 7216 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7217 } 7218 return true; 7219 } 7220 7221 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7222 log_info("denying to pin request"); 7223 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7224 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7225 return true; 7226 } 7227 7228 // security assessment requires remote features 7229 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7230 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7231 hci_ssp_assess_security_on_io_cap_request(connection); 7232 // 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 7233 } 7234 7235 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7236 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7237 // set authentication requirements: 7238 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7239 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7240 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7241 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7242 authreq |= 1; 7243 } 7244 bool bonding = hci_stack->bondable; 7245 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7246 // if we have received IO Cap Response, we're in responder role 7247 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7248 if (bonding && !remote_bonding){ 7249 log_info("Remote not bonding, dropping local flag"); 7250 bonding = false; 7251 } 7252 } 7253 if (bonding){ 7254 if (connection->bonding_flags & BONDING_DEDICATED){ 7255 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7256 } else { 7257 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7258 } 7259 } 7260 uint8_t have_oob_data = 0; 7261 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7262 if (connection->classic_oob_c_192 != NULL){ 7263 have_oob_data |= 1; 7264 } 7265 if (connection->classic_oob_c_256 != NULL){ 7266 have_oob_data |= 2; 7267 } 7268 #endif 7269 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7270 return true; 7271 } 7272 7273 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7274 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7275 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7276 return true; 7277 } 7278 7279 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7280 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7281 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7282 const uint8_t zero[16] = { 0 }; 7283 const uint8_t * r_192 = zero; 7284 const uint8_t * c_192 = zero; 7285 const uint8_t * r_256 = zero; 7286 const uint8_t * c_256 = zero; 7287 // verify P-256 OOB 7288 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7289 c_256 = connection->classic_oob_c_256; 7290 if (connection->classic_oob_r_256 != NULL) { 7291 r_256 = connection->classic_oob_r_256; 7292 } 7293 } 7294 // verify P-192 OOB 7295 if ((connection->classic_oob_c_192 != NULL)) { 7296 c_192 = connection->classic_oob_c_192; 7297 if (connection->classic_oob_r_192 != NULL) { 7298 r_192 = connection->classic_oob_r_192; 7299 } 7300 } 7301 7302 // assess security 7303 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7304 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7305 if (need_level_4 && !can_reach_level_4){ 7306 log_info("Level 4 required, but not possible -> abort"); 7307 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7308 // send oob negative reply 7309 c_256 = NULL; 7310 c_192 = NULL; 7311 } 7312 7313 // Reply 7314 if (c_256 != zero) { 7315 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7316 } else if (c_192 != zero){ 7317 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7318 } else { 7319 hci_stack->classic_oob_con_handle = connection->con_handle; 7320 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7321 } 7322 return true; 7323 } 7324 #endif 7325 7326 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7327 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7328 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7329 return true; 7330 } 7331 7332 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7333 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7334 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7335 return true; 7336 } 7337 7338 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7339 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7340 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7341 return true; 7342 } 7343 7344 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7345 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7346 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7347 connection->state = SENT_DISCONNECT; 7348 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7349 return true; 7350 } 7351 7352 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7353 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7354 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7355 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7356 return true; 7357 } 7358 7359 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7360 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7361 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7362 return true; 7363 } 7364 7365 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7366 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7367 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7368 return true; 7369 } 7370 7371 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7372 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7373 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7374 return true; 7375 } 7376 7377 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7378 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7379 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7380 return true; 7381 } 7382 7383 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7384 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7385 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7386 return true; 7387 } 7388 #endif 7389 7390 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7391 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7392 #ifdef ENABLE_CLASSIC 7393 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7394 #endif 7395 if (connection->state != SENT_DISCONNECT){ 7396 connection->state = SENT_DISCONNECT; 7397 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7398 return true; 7399 } 7400 } 7401 7402 #ifdef ENABLE_CLASSIC 7403 uint16_t sniff_min_interval; 7404 switch (connection->sniff_min_interval){ 7405 case 0: 7406 break; 7407 case 0xffff: 7408 connection->sniff_min_interval = 0; 7409 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7410 return true; 7411 default: 7412 sniff_min_interval = connection->sniff_min_interval; 7413 connection->sniff_min_interval = 0; 7414 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7415 return true; 7416 } 7417 7418 if (connection->sniff_subrating_max_latency != 0xffff){ 7419 uint16_t max_latency = connection->sniff_subrating_max_latency; 7420 connection->sniff_subrating_max_latency = 0; 7421 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7422 return true; 7423 } 7424 7425 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7426 uint8_t service_type = (uint8_t) connection->qos_service_type; 7427 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7428 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); 7429 return true; 7430 } 7431 7432 if (connection->request_role != HCI_ROLE_INVALID){ 7433 hci_role_t role = connection->request_role; 7434 connection->request_role = HCI_ROLE_INVALID; 7435 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7436 return true; 7437 } 7438 #endif 7439 7440 if (connection->gap_connection_tasks != 0){ 7441 #ifdef ENABLE_CLASSIC 7442 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7443 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7444 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7445 return true; 7446 } 7447 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7448 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7449 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7450 return true; 7451 } 7452 #endif 7453 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7454 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7455 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7456 return true; 7457 } 7458 #ifdef ENABLE_BLE 7459 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7460 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7461 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7462 return true; 7463 } 7464 #endif 7465 } 7466 7467 #ifdef ENABLE_BLE 7468 switch (connection->le_con_parameter_update_state){ 7469 // response to L2CAP CON PARAMETER UPDATE REQUEST 7470 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7471 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7472 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7473 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7474 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7475 return true; 7476 case CON_PARAMETER_UPDATE_REPLY: 7477 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7478 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7479 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7480 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7481 return true; 7482 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7483 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7484 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7485 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7486 return true; 7487 default: 7488 break; 7489 } 7490 if (connection->le_phy_update_all_phys != 0xffu){ 7491 uint8_t all_phys = connection->le_phy_update_all_phys; 7492 connection->le_phy_update_all_phys = 0xff; 7493 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); 7494 return true; 7495 } 7496 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7497 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7498 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7499 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7500 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7501 return true; 7502 } 7503 if (connection->le_past_advertising_handle != 0xff){ 7504 uint8_t advertising_handle = connection->le_past_advertising_handle; 7505 connection->le_past_advertising_handle = 0xff; 7506 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7507 return true; 7508 } 7509 #endif 7510 #endif 7511 } 7512 return false; 7513 } 7514 7515 static void hci_run(void){ 7516 7517 // stack state sub statemachines 7518 switch (hci_stack->state) { 7519 case HCI_STATE_INITIALIZING: 7520 hci_initializing_run(); 7521 break; 7522 case HCI_STATE_HALTING: 7523 hci_halting_run(); 7524 break; 7525 case HCI_STATE_FALLING_ASLEEP: 7526 hci_falling_asleep_run(); 7527 break; 7528 default: 7529 break; 7530 } 7531 7532 // allow to run after initialization to working transition 7533 if (hci_stack->state != HCI_STATE_WORKING){ 7534 return; 7535 } 7536 7537 bool done; 7538 7539 // send continuation fragments first, as they block the prepared packet buffer 7540 done = hci_run_acl_fragments(); 7541 if (done) return; 7542 7543 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7544 done = hci_run_iso_fragments(); 7545 if (done) return; 7546 #endif 7547 7548 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7549 // send host num completed packets next as they don't require num_cmd_packets > 0 7550 if (!hci_can_send_comand_packet_transport()) return; 7551 if (hci_stack->host_completed_packets){ 7552 hci_host_num_completed_packets(); 7553 return; 7554 } 7555 #endif 7556 7557 if (!hci_can_send_command_packet_now()) return; 7558 7559 // global/non-connection oriented commands 7560 7561 7562 #ifdef ENABLE_CLASSIC 7563 // general gap classic 7564 done = hci_run_general_gap_classic(); 7565 if (done) return; 7566 #endif 7567 7568 #ifdef ENABLE_BLE 7569 // general gap le 7570 done = hci_run_general_gap_le(); 7571 if (done) return; 7572 7573 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7574 // ISO related tasks, e.g. BIG create/terminate/sync 7575 done = hci_run_iso_tasks(); 7576 if (done) return; 7577 #endif 7578 #endif 7579 7580 // send pending HCI commands 7581 hci_run_general_pending_commands(); 7582 } 7583 7584 #ifdef ENABLE_CLASSIC 7585 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7586 // bits 6-9 are 'don't use' 7587 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7588 7589 // restrict packet types to local and remote supported 7590 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7591 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7592 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7593 } 7594 #endif 7595 7596 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7597 // house-keeping 7598 7599 #ifdef ENABLE_CLASSIC 7600 bd_addr_t addr; 7601 hci_connection_t * conn; 7602 #endif 7603 #ifdef ENABLE_LE_CENTRAL 7604 uint8_t initiator_filter_policy; 7605 #endif 7606 7607 uint16_t opcode = little_endian_read_16(packet, 0); 7608 switch (opcode) { 7609 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7610 hci_stack->loopback_mode = packet[3]; 7611 break; 7612 7613 #ifdef ENABLE_CLASSIC 7614 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7615 reverse_bd_addr(&packet[3], addr); 7616 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7617 7618 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7619 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7620 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7621 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7622 } 7623 7624 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7625 if (!conn) { 7626 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7627 if (!conn) { 7628 // notify client that alloc failed 7629 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7630 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7631 } 7632 conn->state = SEND_CREATE_CONNECTION; 7633 } 7634 7635 log_info("conn state %u", conn->state); 7636 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7637 switch (conn->state) { 7638 // if connection active exists 7639 case OPEN: 7640 // and OPEN, emit connection complete command 7641 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7642 // packet not sent to controller 7643 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7644 case RECEIVED_DISCONNECTION_COMPLETE: 7645 // create connection triggered in disconnect complete event, let's do it now 7646 break; 7647 case SEND_CREATE_CONNECTION: 7648 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7649 if (hci_classic_operation_active()){ 7650 return ERROR_CODE_SUCCESS; 7651 } 7652 #endif 7653 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7654 break; 7655 default: 7656 // otherwise, just ignore as it is already in the open process 7657 // packet not sent to controller 7658 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7659 } 7660 conn->state = SENT_CREATE_CONNECTION; 7661 7662 // track outgoing connection 7663 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7664 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7665 break; 7666 7667 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7668 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7669 if (conn == NULL) { 7670 // neither SCO nor ACL connection for con handle 7671 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7672 } else { 7673 uint16_t remote_supported_sco_packets; 7674 switch (conn->address_type){ 7675 case BD_ADDR_TYPE_ACL: 7676 // assert SCO connection does not exit 7677 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7678 return ERROR_CODE_COMMAND_DISALLOWED; 7679 } 7680 // cache remote sco packet types 7681 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7682 7683 // allocate connection struct 7684 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7685 HCI_ROLE_MASTER); 7686 if (!conn) { 7687 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7688 } 7689 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7690 break; 7691 case BD_ADDR_TYPE_SCO: 7692 // update of existing SCO connection 7693 break; 7694 default: 7695 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7696 } 7697 } 7698 7699 // conn refers to hci connection of type sco now 7700 7701 conn->state = SENT_CREATE_CONNECTION; 7702 7703 // track outgoing connection to handle command status with error 7704 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7705 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7706 7707 // setup_synchronous_connection? Voice setting at offset 22 7708 // TODO: compare to current setting if sco connection already active 7709 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7710 7711 // derive sco payload length from packet types 7712 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7713 break; 7714 7715 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7716 // get SCO connection 7717 reverse_bd_addr(&packet[3], addr); 7718 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7719 if (conn == NULL){ 7720 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7721 } 7722 7723 conn->state = ACCEPTED_CONNECTION_REQUEST; 7724 7725 // track outgoing connection to handle command status with error 7726 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7727 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7728 7729 // accept_synchronous_connection? Voice setting at offset 18 7730 // TODO: compare to current setting if sco connection already active 7731 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7732 7733 // derive sco payload length from packet types 7734 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7735 break; 7736 #endif 7737 7738 #ifdef ENABLE_BLE 7739 #ifdef ENABLE_LE_CENTRAL 7740 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7741 // white list used? 7742 initiator_filter_policy = packet[7]; 7743 switch (initiator_filter_policy) { 7744 case 0: 7745 // whitelist not used 7746 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7747 break; 7748 case 1: 7749 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7750 break; 7751 default: 7752 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7753 break; 7754 } 7755 // track outgoing connection 7756 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7757 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7758 break; 7759 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7760 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7761 // white list used? 7762 initiator_filter_policy = packet[3]; 7763 switch (initiator_filter_policy) { 7764 case 0: 7765 // whitelist not used 7766 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7767 break; 7768 case 1: 7769 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7770 break; 7771 default: 7772 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7773 break; 7774 } 7775 // track outgoing connection 7776 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7777 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7778 break; 7779 #endif 7780 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7781 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7782 break; 7783 #endif 7784 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7785 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7786 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7787 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7788 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7789 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7790 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7791 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7792 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7793 case HCI_OPCODE_HCI_LE_READ_PHY: 7794 case HCI_OPCODE_HCI_LE_SET_PHY: 7795 // conection handle is first command parameter 7796 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7797 break; 7798 #endif 7799 #endif /* ENABLE_BLE */ 7800 default: 7801 break; 7802 } 7803 7804 hci_stack->num_cmd_packets--; 7805 7806 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7807 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7808 if (err != 0){ 7809 return ERROR_CODE_HARDWARE_FAILURE; 7810 } 7811 return ERROR_CODE_SUCCESS; 7812 } 7813 7814 // disconnect because of security block 7815 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7816 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7817 if (!connection) return; 7818 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7819 } 7820 7821 7822 // Configure Secure Simple Pairing 7823 7824 #ifdef ENABLE_CLASSIC 7825 7826 // enable will enable SSP during init 7827 void gap_ssp_set_enable(int enable){ 7828 hci_stack->ssp_enable = enable; 7829 } 7830 7831 static int hci_local_ssp_activated(void){ 7832 return gap_ssp_supported() && hci_stack->ssp_enable; 7833 } 7834 7835 // if set, BTstack will respond to io capability request using authentication requirement 7836 void gap_ssp_set_io_capability(int io_capability){ 7837 hci_stack->ssp_io_capability = io_capability; 7838 } 7839 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7840 hci_stack->ssp_authentication_requirement = authentication_requirement; 7841 } 7842 7843 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7844 void gap_ssp_set_auto_accept(int auto_accept){ 7845 hci_stack->ssp_auto_accept = auto_accept; 7846 } 7847 7848 void gap_secure_connections_enable(bool enable){ 7849 hci_stack->secure_connections_enable = enable; 7850 } 7851 bool gap_secure_connections_active(void){ 7852 return hci_stack->secure_connections_active; 7853 } 7854 7855 #endif 7856 7857 // va_list part of hci_send_cmd 7858 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7859 if (!hci_can_send_command_packet_now()){ 7860 log_error("hci_send_cmd called but cannot send packet now"); 7861 return ERROR_CODE_COMMAND_DISALLOWED; 7862 } 7863 7864 // for HCI INITIALIZATION 7865 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7866 hci_stack->last_cmd_opcode = cmd->opcode; 7867 7868 hci_reserve_packet_buffer(); 7869 uint8_t * packet = hci_stack->hci_packet_buffer; 7870 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7871 uint8_t status = hci_send_cmd_packet(packet, size); 7872 7873 // release packet buffer on error or for synchronous transport implementations 7874 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7875 hci_release_packet_buffer(); 7876 hci_emit_transport_packet_sent(); 7877 } 7878 7879 return status; 7880 } 7881 7882 /** 7883 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7884 */ 7885 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7886 va_list argptr; 7887 va_start(argptr, cmd); 7888 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7889 va_end(argptr); 7890 return status; 7891 } 7892 7893 // Create various non-HCI events. 7894 // TODO: generalize, use table similar to hci_create_command 7895 7896 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7897 // dump packet 7898 if (dump) { 7899 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7900 } 7901 7902 // dispatch to all event handlers 7903 btstack_linked_list_iterator_t it; 7904 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7905 while (btstack_linked_list_iterator_has_next(&it)){ 7906 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7907 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7908 } 7909 } 7910 7911 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7912 if (!hci_stack->acl_packet_handler) return; 7913 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7914 } 7915 7916 #ifdef ENABLE_CLASSIC 7917 static void hci_notify_if_sco_can_send_now(void){ 7918 // notify SCO sender if waiting 7919 if (!hci_stack->sco_waiting_for_can_send_now) return; 7920 if (hci_can_send_sco_packet_now()){ 7921 hci_stack->sco_waiting_for_can_send_now = 0; 7922 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7923 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7924 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7925 } 7926 } 7927 7928 // parsing end emitting has been merged to reduce code size 7929 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7930 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7931 7932 uint8_t * eir_data; 7933 ad_context_t context; 7934 const uint8_t * name; 7935 uint8_t name_len; 7936 7937 if (size < 3) return; 7938 7939 int event_type = hci_event_packet_get_type(packet); 7940 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7941 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7942 7943 switch (event_type){ 7944 case HCI_EVENT_INQUIRY_RESULT: 7945 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7946 if (size != (3 + (num_responses * 14))) return; 7947 break; 7948 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7949 if (size != 257) return; 7950 if (num_responses != 1) return; 7951 break; 7952 default: 7953 return; 7954 } 7955 7956 // event[1] is set at the end 7957 int i; 7958 for (i=0; i<num_responses;i++){ 7959 memset(event, 0, sizeof(event)); 7960 event[0] = GAP_EVENT_INQUIRY_RESULT; 7961 uint8_t event_size = 27; // if name is not set by EIR 7962 7963 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7964 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7965 (void)memcpy(&event[9], 7966 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7967 3); // class of device 7968 (void)memcpy(&event[12], 7969 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7970 2); // clock offset 7971 7972 switch (event_type){ 7973 case HCI_EVENT_INQUIRY_RESULT: 7974 // 14,15,16,17 = 0, size 18 7975 break; 7976 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7977 event[14] = 1; 7978 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7979 // 16,17 = 0, size 18 7980 break; 7981 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7982 event[14] = 1; 7983 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7984 // EIR packets only contain a single inquiry response 7985 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7986 name = NULL; 7987 // Iterate over EIR data 7988 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7989 uint8_t data_type = ad_iterator_get_data_type(&context); 7990 uint8_t data_size = ad_iterator_get_data_len(&context); 7991 const uint8_t * data = ad_iterator_get_data(&context); 7992 // Prefer Complete Local Name over Shortened Local Name 7993 switch (data_type){ 7994 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7995 if (name) continue; 7996 /* fall through */ 7997 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7998 name = data; 7999 name_len = data_size; 8000 break; 8001 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8002 if (data_size != 8) break; 8003 event[16] = 1; 8004 memcpy(&event[17], data, 8); 8005 break; 8006 default: 8007 break; 8008 } 8009 } 8010 if (name){ 8011 event[25] = 1; 8012 // truncate name if needed 8013 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8014 event[26] = len; 8015 (void)memcpy(&event[27], name, len); 8016 event_size += len; 8017 } 8018 break; 8019 default: 8020 return; 8021 } 8022 event[1] = event_size - 2; 8023 hci_emit_event(event, event_size, 1); 8024 } 8025 } 8026 #endif 8027 8028 void hci_emit_state(void){ 8029 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8030 uint8_t event[3]; 8031 event[0] = BTSTACK_EVENT_STATE; 8032 event[1] = sizeof(event) - 2u; 8033 event[2] = hci_stack->state; 8034 hci_emit_event(event, sizeof(event), 1); 8035 } 8036 8037 #ifdef ENABLE_CLASSIC 8038 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8039 uint8_t event[13]; 8040 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8041 event[1] = sizeof(event) - 2; 8042 event[2] = status; 8043 little_endian_store_16(event, 3, con_handle); 8044 reverse_bd_addr(address, &event[5]); 8045 event[11] = 1; // ACL connection 8046 event[12] = 0; // encryption disabled 8047 hci_emit_event(event, sizeof(event), 1); 8048 } 8049 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8050 if (disable_l2cap_timeouts) return; 8051 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8052 uint8_t event[4]; 8053 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8054 event[1] = sizeof(event) - 2; 8055 little_endian_store_16(event, 2, conn->con_handle); 8056 hci_emit_event(event, sizeof(event), 1); 8057 } 8058 #endif 8059 8060 #ifdef ENABLE_BLE 8061 #ifdef ENABLE_LE_CENTRAL 8062 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){ 8063 uint8_t hci_event[21]; 8064 hci_event[0] = HCI_EVENT_LE_META; 8065 hci_event[1] = sizeof(hci_event) - 2u; 8066 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8067 hci_event[3] = status; 8068 little_endian_store_16(hci_event, 4, con_handle); 8069 hci_event[6] = 0; // TODO: role 8070 hci_event[7] = address_type; 8071 reverse_bd_addr(address, &hci_event[8]); 8072 little_endian_store_16(hci_event, 14, 0); // interval 8073 little_endian_store_16(hci_event, 16, 0); // latency 8074 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8075 hci_event[20] = 0; // master clock accuracy 8076 hci_emit_event(hci_event, sizeof(hci_event), 1); 8077 // emit GAP event, too 8078 uint8_t gap_event[36]; 8079 hci_create_gap_connection_complete_event(hci_event, gap_event); 8080 hci_emit_event(gap_event, sizeof(gap_event), 1); 8081 } 8082 #endif 8083 #endif 8084 8085 static void hci_emit_transport_packet_sent(void){ 8086 // notify upper stack that it might be possible to send again 8087 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8088 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 8089 } 8090 8091 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8092 uint8_t event[6]; 8093 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8094 event[1] = sizeof(event) - 2u; 8095 event[2] = 0; // status = OK 8096 little_endian_store_16(event, 3, con_handle); 8097 event[5] = reason; 8098 hci_emit_event(event, sizeof(event), 1); 8099 } 8100 8101 static void hci_emit_nr_connections_changed(void){ 8102 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8103 uint8_t event[3]; 8104 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8105 event[1] = sizeof(event) - 2u; 8106 event[2] = nr_hci_connections(); 8107 hci_emit_event(event, sizeof(event), 1); 8108 } 8109 8110 static void hci_emit_hci_open_failed(void){ 8111 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8112 uint8_t event[2]; 8113 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8114 event[1] = sizeof(event) - 2u; 8115 hci_emit_event(event, sizeof(event), 1); 8116 } 8117 8118 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8119 log_info("hci_emit_dedicated_bonding_result %u ", status); 8120 uint8_t event[9]; 8121 int pos = 0; 8122 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8123 event[pos++] = sizeof(event) - 2u; 8124 event[pos++] = status; 8125 reverse_bd_addr(address, &event[pos]); 8126 hci_emit_event(event, sizeof(event), 1); 8127 } 8128 8129 8130 #ifdef ENABLE_CLASSIC 8131 8132 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8133 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8134 uint8_t event[5]; 8135 int pos = 0; 8136 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8137 event[pos++] = sizeof(event) - 2; 8138 little_endian_store_16(event, 2, con_handle); 8139 pos += 2; 8140 event[pos++] = level; 8141 hci_emit_event(event, sizeof(event), 1); 8142 } 8143 8144 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8145 if (!connection) return LEVEL_0; 8146 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8147 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8148 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8149 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8150 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8151 // LEVEL 4 always requires 128 bit encrytion key size 8152 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8153 security_level = LEVEL_3; 8154 } 8155 return security_level; 8156 } 8157 8158 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8159 uint8_t event[4]; 8160 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8161 event[1] = sizeof(event) - 2; 8162 event[2] = discoverable; 8163 event[3] = connectable; 8164 hci_emit_event(event, sizeof(event), 1); 8165 } 8166 8167 // query if remote side supports eSCO 8168 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8169 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8170 if (!connection) return false; 8171 return (connection->remote_supported_features[0] & 1) != 0; 8172 } 8173 8174 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8175 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8176 if (!connection) return 0; 8177 return connection->remote_supported_sco_packets; 8178 } 8179 8180 static bool hci_ssp_supported(hci_connection_t * connection){ 8181 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8182 return (connection->bonding_flags & mask) == mask; 8183 } 8184 8185 // query if remote side supports SSP 8186 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8187 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8188 if (!connection) return false; 8189 return hci_ssp_supported(connection) ? 1 : 0; 8190 } 8191 8192 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8193 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8194 } 8195 8196 /** 8197 * Check if remote supported features query has completed 8198 */ 8199 bool hci_remote_features_available(hci_con_handle_t handle){ 8200 hci_connection_t * connection = hci_connection_for_handle(handle); 8201 if (!connection) return false; 8202 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8203 } 8204 8205 /** 8206 * Trigger remote supported features query 8207 */ 8208 8209 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8210 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8211 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8212 } 8213 } 8214 8215 void hci_remote_features_query(hci_con_handle_t con_handle){ 8216 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8217 if (!connection) return; 8218 hci_trigger_remote_features_for_connection(connection); 8219 hci_run(); 8220 } 8221 8222 // GAP API 8223 /** 8224 * @bbrief enable/disable bonding. default is enabled 8225 * @praram enabled 8226 */ 8227 void gap_set_bondable_mode(int enable){ 8228 hci_stack->bondable = enable ? 1 : 0; 8229 } 8230 /** 8231 * @brief Get bondable mode. 8232 * @return 1 if bondable 8233 */ 8234 int gap_get_bondable_mode(void){ 8235 return hci_stack->bondable; 8236 } 8237 8238 /** 8239 * @brief map link keys to security levels 8240 */ 8241 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8242 switch (link_key_type){ 8243 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8244 return LEVEL_4; 8245 case COMBINATION_KEY: 8246 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8247 return LEVEL_3; 8248 default: 8249 return LEVEL_2; 8250 } 8251 } 8252 8253 /** 8254 * @brief map link keys to secure connection yes/no 8255 */ 8256 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8257 switch (link_key_type){ 8258 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8259 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8260 return true; 8261 default: 8262 return false; 8263 } 8264 } 8265 8266 /** 8267 * @brief map link keys to authenticated 8268 */ 8269 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8270 switch (link_key_type){ 8271 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8272 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8273 return true; 8274 default: 8275 return false; 8276 } 8277 } 8278 8279 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8280 log_info("gap_mitm_protection_required_for_security_level %u", level); 8281 return level > LEVEL_2; 8282 } 8283 8284 /** 8285 * @brief get current security level 8286 */ 8287 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8288 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8289 if (!connection) return LEVEL_0; 8290 return gap_security_level_for_connection(connection); 8291 } 8292 8293 /** 8294 * @brief request connection to device to 8295 * @result GAP_AUTHENTICATION_RESULT 8296 */ 8297 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8298 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8299 if (!connection){ 8300 hci_emit_security_level(con_handle, LEVEL_0); 8301 return; 8302 } 8303 8304 btstack_assert(hci_is_le_connection(connection) == false); 8305 8306 // 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) 8307 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8308 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8309 requested_level = LEVEL_4; 8310 } 8311 8312 gap_security_level_t current_level = gap_security_level(con_handle); 8313 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8314 requested_level, connection->requested_security_level, current_level); 8315 8316 // authentication active if authentication request was sent or planned level > 0 8317 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8318 if (authentication_active){ 8319 // authentication already active 8320 if (connection->requested_security_level < requested_level){ 8321 // increase requested level as new level is higher 8322 // TODO: handle re-authentication when done 8323 connection->requested_security_level = requested_level; 8324 } 8325 } else { 8326 // no request active, notify if security sufficient 8327 if (requested_level <= current_level){ 8328 hci_emit_security_level(con_handle, current_level); 8329 return; 8330 } 8331 8332 // store request 8333 connection->requested_security_level = requested_level; 8334 8335 // start to authenticate connection 8336 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8337 8338 // request remote features if not already active, also trigger hci_run 8339 hci_remote_features_query(con_handle); 8340 } 8341 } 8342 8343 /** 8344 * @brief start dedicated bonding with device. disconnect after bonding 8345 * @param device 8346 * @param request MITM protection 8347 * @result GAP_DEDICATED_BONDING_COMPLETE 8348 */ 8349 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8350 8351 // create connection state machine 8352 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8353 8354 if (!connection){ 8355 return BTSTACK_MEMORY_ALLOC_FAILED; 8356 } 8357 8358 // delete link key 8359 gap_drop_link_key_for_bd_addr(device); 8360 8361 // configure LEVEL_2/3, dedicated bonding 8362 connection->state = SEND_CREATE_CONNECTION; 8363 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8364 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8365 connection->bonding_flags = BONDING_DEDICATED; 8366 8367 hci_run(); 8368 8369 return 0; 8370 } 8371 8372 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8373 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8374 if (connection == NULL){ 8375 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8376 } 8377 if (defer){ 8378 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8379 } else { 8380 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8381 // trigger disconnect 8382 hci_run(); 8383 } 8384 return ERROR_CODE_SUCCESS; 8385 } 8386 8387 void gap_set_local_name(const char * local_name){ 8388 hci_stack->local_name = local_name; 8389 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8390 // also update EIR if not set by user 8391 if (hci_stack->eir_data == NULL){ 8392 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8393 } 8394 hci_run(); 8395 } 8396 #endif 8397 8398 8399 #ifdef ENABLE_BLE 8400 8401 #ifdef ENABLE_LE_CENTRAL 8402 void gap_start_scan(void){ 8403 hci_stack->le_scanning_enabled = true; 8404 hci_run(); 8405 } 8406 8407 void gap_stop_scan(void){ 8408 hci_stack->le_scanning_enabled = false; 8409 hci_run(); 8410 } 8411 8412 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8413 hci_stack->le_scan_type = scan_type; 8414 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8415 hci_stack->le_scan_interval = scan_interval; 8416 hci_stack->le_scan_window = scan_window; 8417 hci_stack->le_scanning_param_update = true; 8418 hci_run(); 8419 } 8420 8421 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8422 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8423 } 8424 8425 void gap_set_scan_duplicate_filter(bool enabled){ 8426 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8427 } 8428 8429 void gap_set_scan_phys(uint8_t phys){ 8430 // LE Coded and LE 1M PHY 8431 hci_stack->le_scan_phys = phys & 0x05; 8432 } 8433 8434 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8435 // disallow le connection if outgoing already active 8436 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8437 log_error("le connect already active"); 8438 return ERROR_CODE_COMMAND_DISALLOWED; 8439 } 8440 8441 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8442 if (conn == NULL) { 8443 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8444 if (conn == false){ 8445 // alloc failed 8446 log_info("gap_connect: failed to alloc hci_connection_t"); 8447 return BTSTACK_MEMORY_ALLOC_FAILED; 8448 } 8449 } else { 8450 switch (conn->state) { 8451 case RECEIVED_DISCONNECTION_COMPLETE: 8452 // connection was just disconnected, reset state and allow re-connect 8453 conn->role = HCI_ROLE_MASTER; 8454 break; 8455 default: 8456 return ERROR_CODE_COMMAND_DISALLOWED; 8457 } 8458 } 8459 8460 // set le connecting state 8461 if (hci_is_le_connection_type(addr_type)){ 8462 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8463 } 8464 8465 // trigger connect 8466 log_info("gap_connect: send create connection next"); 8467 conn->state = SEND_CREATE_CONNECTION; 8468 hci_run(); 8469 return ERROR_CODE_SUCCESS; 8470 } 8471 8472 // @assumption: only a single outgoing LE Connection exists 8473 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8474 btstack_linked_item_t *it; 8475 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8476 hci_connection_t * conn = (hci_connection_t *) it; 8477 if (hci_is_le_connection(conn)){ 8478 switch (conn->state){ 8479 case SEND_CREATE_CONNECTION: 8480 case SENT_CREATE_CONNECTION: 8481 return conn; 8482 default: 8483 break; 8484 }; 8485 } 8486 } 8487 return NULL; 8488 } 8489 8490 uint8_t gap_connect_cancel(void){ 8491 hci_connection_t * conn; 8492 switch (hci_stack->le_connecting_request){ 8493 case LE_CONNECTING_IDLE: 8494 break; 8495 case LE_CONNECTING_WHITELIST: 8496 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8497 hci_run(); 8498 break; 8499 case LE_CONNECTING_DIRECT: 8500 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8501 conn = gap_get_outgoing_le_connection(); 8502 if (conn == NULL){ 8503 hci_run(); 8504 } else { 8505 switch (conn->state){ 8506 case SEND_CREATE_CONNECTION: 8507 // skip sending create connection and emit event instead 8508 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8509 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8510 btstack_memory_hci_connection_free( conn ); 8511 break; 8512 case SENT_CREATE_CONNECTION: 8513 // let hci_run_general_gap_le cancel outgoing connection 8514 hci_run(); 8515 break; 8516 default: 8517 break; 8518 } 8519 } 8520 break; 8521 default: 8522 btstack_unreachable(); 8523 break; 8524 } 8525 return ERROR_CODE_SUCCESS; 8526 } 8527 8528 /** 8529 * @brief Set connection parameters for outgoing connections 8530 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8531 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8532 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8533 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8534 * @param conn_latency, default: 4 8535 * @param supervision_timeout (unit: 10ms), default: 720 ms 8536 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8537 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8538 */ 8539 8540 void gap_set_connection_phys(uint8_t phys){ 8541 // LE Coded, LE 1M, LE 2M PHY 8542 hci_stack->le_connection_phys = phys & 7; 8543 } 8544 8545 #endif 8546 8547 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8548 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8549 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8550 hci_stack->le_connection_scan_interval = conn_scan_interval; 8551 hci_stack->le_connection_scan_window = conn_scan_window; 8552 hci_stack->le_connection_interval_min = conn_interval_min; 8553 hci_stack->le_connection_interval_max = conn_interval_max; 8554 hci_stack->le_connection_latency = conn_latency; 8555 hci_stack->le_supervision_timeout = supervision_timeout; 8556 hci_stack->le_minimum_ce_length = min_ce_length; 8557 hci_stack->le_maximum_ce_length = max_ce_length; 8558 } 8559 8560 /** 8561 * @brief Updates the connection parameters for a given LE connection 8562 * @param handle 8563 * @param conn_interval_min (unit: 1.25ms) 8564 * @param conn_interval_max (unit: 1.25ms) 8565 * @param conn_latency 8566 * @param supervision_timeout (unit: 10ms) 8567 * @return 0 if ok 8568 */ 8569 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8570 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8571 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8572 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8573 connection->le_conn_interval_min = conn_interval_min; 8574 connection->le_conn_interval_max = conn_interval_max; 8575 connection->le_conn_latency = conn_latency; 8576 connection->le_supervision_timeout = supervision_timeout; 8577 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8578 hci_run(); 8579 return 0; 8580 } 8581 8582 /** 8583 * @brief Request an update of the connection parameter for a given LE connection 8584 * @param handle 8585 * @param conn_interval_min (unit: 1.25ms) 8586 * @param conn_interval_max (unit: 1.25ms) 8587 * @param conn_latency 8588 * @param supervision_timeout (unit: 10ms) 8589 * @return 0 if ok 8590 */ 8591 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8592 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8593 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8594 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8595 connection->le_conn_interval_min = conn_interval_min; 8596 connection->le_conn_interval_max = conn_interval_max; 8597 connection->le_conn_latency = conn_latency; 8598 connection->le_supervision_timeout = supervision_timeout; 8599 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8600 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8601 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8602 return 0; 8603 } 8604 8605 #ifdef ENABLE_LE_PERIPHERAL 8606 8607 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8608 static void hci_assert_advertisement_set_0_ready(void){ 8609 // force advertising set creation for legacy LE Advertising 8610 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8611 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8612 } 8613 } 8614 #endif 8615 8616 /** 8617 * @brief Set Advertisement Data 8618 * @param advertising_data_length 8619 * @param advertising_data (max 31 octets) 8620 * @note data is not copied, pointer has to stay valid 8621 */ 8622 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8623 hci_stack->le_advertisements_data_len = advertising_data_length; 8624 hci_stack->le_advertisements_data = advertising_data; 8625 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8626 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8627 hci_assert_advertisement_set_0_ready(); 8628 #endif 8629 hci_run(); 8630 } 8631 8632 /** 8633 * @brief Set Scan Response Data 8634 * @param advertising_data_length 8635 * @param advertising_data (max 31 octets) 8636 * @note data is not copied, pointer has to stay valid 8637 */ 8638 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8639 hci_stack->le_scan_response_data_len = scan_response_data_length; 8640 hci_stack->le_scan_response_data = scan_response_data; 8641 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8642 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8643 hci_assert_advertisement_set_0_ready(); 8644 #endif 8645 hci_run(); 8646 } 8647 8648 /** 8649 * @brief Set Advertisement Parameters 8650 * @param adv_int_min 8651 * @param adv_int_max 8652 * @param adv_type 8653 * @param direct_address_type 8654 * @param direct_address 8655 * @param channel_map 8656 * @param filter_policy 8657 * 8658 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8659 */ 8660 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8661 uint8_t direct_address_typ, bd_addr_t direct_address, 8662 uint8_t channel_map, uint8_t filter_policy) { 8663 8664 hci_stack->le_advertisements_interval_min = adv_int_min; 8665 hci_stack->le_advertisements_interval_max = adv_int_max; 8666 hci_stack->le_advertisements_type = adv_type; 8667 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8668 hci_stack->le_advertisements_channel_map = channel_map; 8669 hci_stack->le_advertisements_filter_policy = filter_policy; 8670 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8671 6); 8672 8673 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8674 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8675 hci_run(); 8676 } 8677 8678 /** 8679 * @brief Enable/Disable Advertisements 8680 * @param enabled 8681 */ 8682 void gap_advertisements_enable(int enabled){ 8683 if (enabled == 0){ 8684 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8685 } else { 8686 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8687 } 8688 hci_update_advertisements_enabled_for_current_roles(); 8689 hci_run(); 8690 } 8691 8692 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8693 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8694 btstack_linked_list_iterator_t it; 8695 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8696 while (btstack_linked_list_iterator_has_next(&it)){ 8697 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8698 if ( item->advertising_handle == advertising_handle ) { 8699 return item; 8700 } 8701 } 8702 return NULL; 8703 } 8704 8705 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8706 hci_stack->le_resolvable_private_address_update_s = update_s; 8707 hci_run(); 8708 return ERROR_CODE_SUCCESS; 8709 } 8710 8711 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8712 // find free advertisement handle 8713 uint8_t advertisement_handle; 8714 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8715 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8716 } 8717 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8718 // clear 8719 memset(storage, 0, sizeof(le_advertising_set_t)); 8720 // copy params 8721 storage->advertising_handle = advertisement_handle; 8722 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8723 // add to list 8724 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8725 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8726 *out_advertising_handle = advertisement_handle; 8727 // set tasks and start 8728 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8729 hci_run(); 8730 return ERROR_CODE_SUCCESS; 8731 } 8732 8733 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8734 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8735 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8736 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8737 // set tasks and start 8738 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8739 hci_run(); 8740 return ERROR_CODE_SUCCESS; 8741 } 8742 8743 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8744 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8745 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8746 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8747 return ERROR_CODE_SUCCESS; 8748 } 8749 8750 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8751 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8752 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8753 memcpy(advertising_set->random_address, random_address, 6); 8754 // set tasks and start 8755 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8756 hci_run(); 8757 return ERROR_CODE_SUCCESS; 8758 } 8759 8760 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8761 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8762 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8763 advertising_set->adv_data = advertising_data; 8764 advertising_set->adv_data_len = advertising_data_length; 8765 // set tasks and start 8766 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8767 hci_run(); 8768 return ERROR_CODE_SUCCESS; 8769 } 8770 8771 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){ 8772 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8773 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8774 advertising_set->scan_data = scan_response_data; 8775 advertising_set->scan_data_len = scan_response_data_length; 8776 // set tasks and start 8777 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8778 hci_run(); 8779 return ERROR_CODE_SUCCESS; 8780 } 8781 8782 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8783 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8784 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8785 advertising_set->enable_timeout = timeout; 8786 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8787 // set tasks and start 8788 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8789 hci_run(); 8790 return ERROR_CODE_SUCCESS; 8791 } 8792 8793 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8794 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8795 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8796 // set tasks and start 8797 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8798 hci_run(); 8799 return ERROR_CODE_SUCCESS; 8800 } 8801 8802 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8803 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8804 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8805 // set tasks and start 8806 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8807 hci_run(); 8808 return ERROR_CODE_SUCCESS; 8809 } 8810 8811 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8812 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8813 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8814 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8815 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8816 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8817 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8818 // set tasks and start 8819 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8820 hci_run(); 8821 return ERROR_CODE_SUCCESS; 8822 } 8823 8824 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8825 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8826 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8827 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8828 return ERROR_CODE_SUCCESS; 8829 } 8830 8831 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8832 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8833 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8834 advertising_set->periodic_data = periodic_data; 8835 advertising_set->periodic_data_len = periodic_data_length; 8836 // set tasks and start 8837 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8838 hci_run(); 8839 return ERROR_CODE_SUCCESS; 8840 } 8841 8842 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8843 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8844 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8845 // set tasks and start 8846 advertising_set->periodic_include_adi = include_adi; 8847 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8848 hci_run(); 8849 return ERROR_CODE_SUCCESS; 8850 } 8851 8852 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8853 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8854 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8855 // set tasks and start 8856 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8857 hci_run(); 8858 return ERROR_CODE_SUCCESS; 8859 } 8860 8861 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8862 hci_stack->le_past_mode = mode; 8863 hci_stack->le_past_skip = skip; 8864 hci_stack->le_past_sync_timeout = sync_timeout; 8865 hci_stack->le_past_cte_type = cte_type; 8866 hci_stack->le_past_set_default_params = true; 8867 hci_run(); 8868 return ERROR_CODE_SUCCESS; 8869 } 8870 8871 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8872 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8873 if (hci_connection == NULL){ 8874 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8875 } 8876 hci_connection->le_past_sync_handle = sync_handle; 8877 hci_connection->le_past_service_data = service_data; 8878 hci_run(); 8879 return ERROR_CODE_SUCCESS; 8880 } 8881 8882 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8883 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8884 if (hci_connection == NULL){ 8885 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8886 } 8887 hci_connection->le_past_advertising_handle = advertising_handle; 8888 hci_connection->le_past_service_data = service_data; 8889 hci_run(); 8890 return ERROR_CODE_SUCCESS; 8891 } 8892 8893 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8894 8895 #endif 8896 8897 #endif 8898 8899 void hci_le_set_own_address_type(uint8_t own_address_type){ 8900 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8901 if (own_address_type == hci_stack->le_own_addr_type) return; 8902 hci_stack->le_own_addr_type = own_address_type; 8903 8904 #ifdef ENABLE_LE_PERIPHERAL 8905 // update advertisement parameters, too 8906 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8907 hci_run(); 8908 #endif 8909 #ifdef ENABLE_LE_CENTRAL 8910 // note: we don't update scan parameters or modify ongoing connection attempts 8911 #endif 8912 } 8913 8914 void hci_le_random_address_set(const bd_addr_t random_address){ 8915 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 8916 memcpy(hci_stack->le_random_address, random_address, 6); 8917 hci_stack->le_random_address_set = true; 8918 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 8919 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8920 if (hci_le_extended_advertising_supported()){ 8921 hci_assert_advertisement_set_0_ready(); 8922 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8923 } 8924 #endif 8925 hci_run(); 8926 } 8927 8928 #endif 8929 8930 uint8_t gap_disconnect(hci_con_handle_t handle){ 8931 hci_connection_t * conn = hci_connection_for_handle(handle); 8932 if (!conn){ 8933 hci_emit_disconnection_complete(handle, 0); 8934 return 0; 8935 } 8936 // ignore if already disconnected 8937 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8938 return 0; 8939 } 8940 conn->state = SEND_DISCONNECT; 8941 hci_run(); 8942 return 0; 8943 } 8944 8945 int gap_read_rssi(hci_con_handle_t con_handle){ 8946 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8947 if (hci_connection == NULL) return 0; 8948 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8949 hci_run(); 8950 return 1; 8951 } 8952 8953 /** 8954 * @brief Get connection type 8955 * @param con_handle 8956 * @result connection_type 8957 */ 8958 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8959 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8960 if (!conn) return GAP_CONNECTION_INVALID; 8961 switch (conn->address_type){ 8962 case BD_ADDR_TYPE_LE_PUBLIC: 8963 case BD_ADDR_TYPE_LE_RANDOM: 8964 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8965 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8966 return GAP_CONNECTION_LE; 8967 case BD_ADDR_TYPE_SCO: 8968 return GAP_CONNECTION_SCO; 8969 case BD_ADDR_TYPE_ACL: 8970 return GAP_CONNECTION_ACL; 8971 default: 8972 return GAP_CONNECTION_INVALID; 8973 } 8974 } 8975 8976 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8977 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8978 if (!conn) return HCI_ROLE_INVALID; 8979 return (hci_role_t) conn->role; 8980 } 8981 8982 8983 #ifdef ENABLE_CLASSIC 8984 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8985 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8986 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8987 conn->request_role = role; 8988 hci_run(); 8989 return ERROR_CODE_SUCCESS; 8990 } 8991 #endif 8992 8993 #ifdef ENABLE_BLE 8994 8995 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint16_t phy_options){ 8996 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8997 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8998 8999 conn->le_phy_update_all_phys = all_phys; 9000 conn->le_phy_update_tx_phys = tx_phys; 9001 conn->le_phy_update_rx_phys = rx_phys; 9002 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9003 9004 hci_run(); 9005 9006 return 0; 9007 } 9008 9009 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9010 9011 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9012 // incorrect configuration: 9013 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9014 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9015 btstack_assert(false); 9016 #endif 9017 9018 // check if already in list 9019 btstack_linked_list_iterator_t it; 9020 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9021 while (btstack_linked_list_iterator_has_next(&it)) { 9022 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9023 if (entry->address_type != address_type) { 9024 continue; 9025 } 9026 if (memcmp(entry->address, address, 6) != 0) { 9027 continue; 9028 } 9029 9030 // if already on controller: 9031 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9032 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9033 // drop remove request 9034 entry->state = LE_WHITELIST_ON_CONTROLLER; 9035 return ERROR_CODE_SUCCESS; 9036 } else { 9037 // disallow as already on controller 9038 return ERROR_CODE_COMMAND_DISALLOWED; 9039 } 9040 } 9041 9042 // assume scheduled to add 9043 return ERROR_CODE_COMMAND_DISALLOWED; 9044 } 9045 9046 // alloc and add to list 9047 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9048 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9049 entry->address_type = address_type; 9050 (void)memcpy(entry->address, address, 6); 9051 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9052 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9053 return ERROR_CODE_SUCCESS; 9054 } 9055 9056 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9057 btstack_linked_list_iterator_t it; 9058 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9059 while (btstack_linked_list_iterator_has_next(&it)){ 9060 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9061 if (entry->address_type != address_type) { 9062 continue; 9063 } 9064 if (memcmp(entry->address, address, 6) != 0) { 9065 continue; 9066 } 9067 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9068 // remove from controller if already present 9069 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9070 } else { 9071 // directly remove entry from whitelist 9072 btstack_linked_list_iterator_remove(&it); 9073 btstack_memory_whitelist_entry_free(entry); 9074 } 9075 return ERROR_CODE_SUCCESS; 9076 } 9077 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9078 } 9079 9080 static void hci_whitelist_clear(void){ 9081 btstack_linked_list_iterator_t it; 9082 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9083 while (btstack_linked_list_iterator_has_next(&it)){ 9084 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9085 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9086 // remove from controller if already present 9087 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9088 continue; 9089 } 9090 // directly remove entry from whitelist 9091 btstack_linked_list_iterator_remove(&it); 9092 btstack_memory_whitelist_entry_free(entry); 9093 } 9094 } 9095 9096 /** 9097 * @brief Clear Whitelist 9098 * @return 0 if ok 9099 */ 9100 uint8_t gap_whitelist_clear(void){ 9101 hci_whitelist_clear(); 9102 hci_run(); 9103 return ERROR_CODE_SUCCESS; 9104 } 9105 9106 /** 9107 * @brief Add Device to Whitelist 9108 * @param address_typ 9109 * @param address 9110 * @return 0 if ok 9111 */ 9112 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9113 uint8_t status = hci_whitelist_add(address_type, address); 9114 if (status){ 9115 return status; 9116 } 9117 hci_run(); 9118 return ERROR_CODE_SUCCESS; 9119 } 9120 9121 /** 9122 * @brief Remove Device from Whitelist 9123 * @param address_typ 9124 * @param address 9125 * @return 0 if ok 9126 */ 9127 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9128 uint8_t status = hci_whitelist_remove(address_type, address); 9129 if (status){ 9130 return status; 9131 } 9132 hci_run(); 9133 return ERROR_CODE_SUCCESS; 9134 } 9135 9136 #ifdef ENABLE_LE_CENTRAL 9137 /** 9138 * @brief Connect with Whitelist 9139 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9140 * @return - if ok 9141 */ 9142 uint8_t gap_connect_with_whitelist(void){ 9143 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9144 return ERROR_CODE_COMMAND_DISALLOWED; 9145 } 9146 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9147 hci_run(); 9148 return ERROR_CODE_SUCCESS; 9149 } 9150 9151 /** 9152 * @brief Auto Connection Establishment - Start Connecting to device 9153 * @param address_typ 9154 * @param address 9155 * @return 0 if ok 9156 */ 9157 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9158 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9159 return ERROR_CODE_COMMAND_DISALLOWED; 9160 } 9161 9162 uint8_t status = hci_whitelist_add(address_type, address); 9163 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9164 return status; 9165 } 9166 9167 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9168 9169 hci_run(); 9170 return ERROR_CODE_SUCCESS; 9171 } 9172 9173 /** 9174 * @brief Auto Connection Establishment - Stop Connecting to device 9175 * @param address_typ 9176 * @param address 9177 * @return 0 if ok 9178 */ 9179 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9180 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9181 return ERROR_CODE_COMMAND_DISALLOWED; 9182 } 9183 9184 hci_whitelist_remove(address_type, address); 9185 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9186 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9187 } 9188 hci_run(); 9189 return 0; 9190 } 9191 9192 /** 9193 * @brief Auto Connection Establishment - Stop everything 9194 * @note Convenience function to stop all active auto connection attempts 9195 */ 9196 uint8_t gap_auto_connection_stop_all(void){ 9197 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9198 return ERROR_CODE_COMMAND_DISALLOWED; 9199 } 9200 hci_whitelist_clear(); 9201 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9202 hci_run(); 9203 return ERROR_CODE_SUCCESS; 9204 } 9205 9206 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9207 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9208 if (!conn) return 0; 9209 return conn->le_connection_interval; 9210 } 9211 #endif 9212 #endif 9213 9214 #ifdef ENABLE_CLASSIC 9215 /** 9216 * @brief Set Extended Inquiry Response data 9217 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9218 * @note has to be done before stack starts up 9219 */ 9220 void gap_set_extended_inquiry_response(const uint8_t * data){ 9221 hci_stack->eir_data = data; 9222 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9223 hci_run(); 9224 } 9225 9226 /** 9227 * @brief Start GAP Classic Inquiry 9228 * @param duration in 1.28s units 9229 * @return 0 if ok 9230 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9231 */ 9232 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9233 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9234 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9235 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9236 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9237 } 9238 hci_stack->inquiry_state = duration_in_1280ms_units; 9239 hci_stack->inquiry_max_period_length = 0; 9240 hci_stack->inquiry_min_period_length = 0; 9241 hci_run(); 9242 return 0; 9243 } 9244 9245 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9246 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9247 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9248 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9249 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9250 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9251 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9252 9253 hci_stack->inquiry_state = duration; 9254 hci_stack->inquiry_max_period_length = max_period_length; 9255 hci_stack->inquiry_min_period_length = min_period_length; 9256 hci_run(); 9257 return 0; 9258 } 9259 9260 /** 9261 * @brief Stop GAP Classic Inquiry 9262 * @return 0 if ok 9263 */ 9264 int gap_inquiry_stop(void){ 9265 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9266 // emit inquiry complete event, before it even started 9267 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9268 hci_emit_event(event, sizeof(event), 1); 9269 return 0; 9270 } 9271 switch (hci_stack->inquiry_state){ 9272 case GAP_INQUIRY_STATE_ACTIVE: 9273 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9274 hci_run(); 9275 return ERROR_CODE_SUCCESS; 9276 case GAP_INQUIRY_STATE_PERIODIC: 9277 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9278 hci_run(); 9279 return ERROR_CODE_SUCCESS; 9280 default: 9281 return ERROR_CODE_COMMAND_DISALLOWED; 9282 } 9283 } 9284 9285 void gap_inquiry_set_lap(uint32_t lap){ 9286 hci_stack->inquiry_lap = lap; 9287 } 9288 9289 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9290 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9291 hci_stack->inquiry_scan_window = inquiry_scan_window; 9292 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9293 hci_run(); 9294 } 9295 9296 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9297 { 9298 hci_stack->inquiry_tx_power_level = tx_power; 9299 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9300 hci_run(); 9301 } 9302 9303 9304 /** 9305 * @brief Remote Name Request 9306 * @param addr 9307 * @param page_scan_repetition_mode 9308 * @param clock_offset only used when bit 15 is set 9309 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9310 */ 9311 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9312 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9313 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9314 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9315 hci_stack->remote_name_clock_offset = clock_offset; 9316 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9317 hci_run(); 9318 return 0; 9319 } 9320 9321 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9322 hci_stack->gap_pairing_state = state; 9323 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9324 hci_run(); 9325 return 0; 9326 } 9327 9328 /** 9329 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9330 * @param addr 9331 * @param pin_data 9332 * @param pin_len 9333 * @return 0 if ok 9334 */ 9335 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9336 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9337 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9338 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9339 hci_stack->gap_pairing_pin_len = pin_len; 9340 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9341 } 9342 9343 /** 9344 * @brief Legacy Pairing Pin Code Response 9345 * @param addr 9346 * @param pin 9347 * @return 0 if ok 9348 */ 9349 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9350 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9351 } 9352 9353 /** 9354 * @brief Abort Legacy Pairing 9355 * @param addr 9356 * @param pin 9357 * @return 0 if ok 9358 */ 9359 int gap_pin_code_negative(bd_addr_t addr){ 9360 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9361 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9362 } 9363 9364 /** 9365 * @brief SSP Passkey Response 9366 * @param addr 9367 * @param passkey 9368 * @return 0 if ok 9369 */ 9370 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9371 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9372 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9373 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9374 } 9375 9376 /** 9377 * @brief Abort SSP Passkey Entry/Pairing 9378 * @param addr 9379 * @param pin 9380 * @return 0 if ok 9381 */ 9382 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9383 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9384 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9385 } 9386 9387 /** 9388 * @brief Accept SSP Numeric Comparison 9389 * @param addr 9390 * @param passkey 9391 * @return 0 if ok 9392 */ 9393 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9394 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9395 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9396 } 9397 9398 /** 9399 * @brief Abort SSP Numeric Comparison/Pairing 9400 * @param addr 9401 * @param pin 9402 * @return 0 if ok 9403 */ 9404 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9405 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9406 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9407 } 9408 9409 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9410 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9411 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9412 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9413 connectionSetAuthenticationFlags(conn, flag); 9414 hci_run(); 9415 return ERROR_CODE_SUCCESS; 9416 } 9417 #endif 9418 9419 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9420 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9421 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9422 } 9423 9424 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9425 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9426 } 9427 #endif 9428 9429 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9430 /** 9431 * @brief Report Remote OOB Data 9432 * @param bd_addr 9433 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9434 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9435 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9436 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9437 */ 9438 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){ 9439 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9440 if (connection == NULL) { 9441 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9442 } 9443 connection->classic_oob_c_192 = c_192; 9444 connection->classic_oob_r_192 = r_192; 9445 9446 // ignore P-256 if not supported by us 9447 if (hci_stack->secure_connections_active){ 9448 connection->classic_oob_c_256 = c_256; 9449 connection->classic_oob_r_256 = r_256; 9450 } 9451 9452 return ERROR_CODE_SUCCESS; 9453 } 9454 /** 9455 * @brief Generate new OOB data 9456 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9457 */ 9458 void gap_ssp_generate_oob_data(void){ 9459 hci_stack->classic_read_local_oob_data = true; 9460 hci_run(); 9461 } 9462 9463 #endif 9464 9465 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9466 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9467 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9468 if (connection == NULL) { 9469 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9470 } 9471 9472 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9473 connection->link_key_type = type; 9474 9475 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9476 } 9477 9478 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9479 /** 9480 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9481 * @param inquiry_mode see bluetooth_defines.h 9482 */ 9483 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9484 hci_stack->inquiry_mode = inquiry_mode; 9485 } 9486 9487 /** 9488 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9489 */ 9490 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9491 hci_stack->sco_voice_setting = voice_setting; 9492 } 9493 9494 /** 9495 * @brief Get SCO Voice Setting 9496 * @return current voice setting 9497 */ 9498 uint16_t hci_get_sco_voice_setting(void){ 9499 return hci_stack->sco_voice_setting; 9500 } 9501 9502 static int hci_have_usb_transport(void){ 9503 if (!hci_stack->hci_transport) return 0; 9504 const char * transport_name = hci_stack->hci_transport->name; 9505 if (!transport_name) return 0; 9506 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9507 } 9508 9509 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9510 uint16_t sco_packet_length = 0; 9511 9512 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9513 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9514 int multiplier; 9515 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9516 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9517 multiplier = 2; 9518 } else { 9519 multiplier = 1; 9520 } 9521 #endif 9522 9523 #ifdef ENABLE_SCO_OVER_HCI 9524 if (hci_have_usb_transport()){ 9525 // see Core Spec for H2 USB Transfer. 9526 // 3 byte SCO header + 24 bytes per connection 9527 // @note multiple sco connections not supported currently 9528 sco_packet_length = 3 + 24 * multiplier; 9529 } else { 9530 // 3 byte SCO header + SCO packet length over the air 9531 sco_packet_length = 3 + payload_size * multiplier; 9532 // assert that it still fits inside an SCO buffer 9533 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9534 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9535 } 9536 } 9537 #endif 9538 #ifdef HAVE_SCO_TRANSPORT 9539 // 3 byte SCO header + SCO packet length over the air 9540 sco_packet_length = 3 + payload_size * multiplier; 9541 // assert that it still fits inside an SCO buffer 9542 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9543 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9544 } 9545 #endif 9546 return sco_packet_length; 9547 } 9548 9549 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9550 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9551 if (connection != NULL){ 9552 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9553 } 9554 return 0; 9555 } 9556 9557 uint16_t hci_get_sco_packet_length(void){ 9558 btstack_linked_list_iterator_t it; 9559 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9560 while (btstack_linked_list_iterator_has_next(&it)){ 9561 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9562 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9563 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9564 } 9565 } 9566 return 0; 9567 } 9568 9569 /** 9570 * @brief Sets the master/slave policy 9571 * @param policy (0: attempt to become master, 1: let connecting device decide) 9572 */ 9573 void hci_set_master_slave_policy(uint8_t policy){ 9574 hci_stack->master_slave_policy = policy; 9575 } 9576 9577 #endif 9578 9579 HCI_STATE hci_get_state(void){ 9580 return hci_stack->state; 9581 } 9582 9583 #ifdef ENABLE_CLASSIC 9584 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9585 hci_stack->gap_classic_accept_callback = accept_callback; 9586 } 9587 #endif 9588 9589 /** 9590 * @brief Set callback for Bluetooth Hardware Error 9591 */ 9592 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9593 hci_stack->hardware_error_callback = fn; 9594 } 9595 9596 void hci_disconnect_all(void){ 9597 btstack_linked_list_iterator_t it; 9598 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9599 while (btstack_linked_list_iterator_has_next(&it)){ 9600 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9601 if (con->state == SENT_DISCONNECT) continue; 9602 con->state = SEND_DISCONNECT; 9603 } 9604 hci_run(); 9605 } 9606 9607 uint16_t hci_get_manufacturer(void){ 9608 return hci_stack->manufacturer; 9609 } 9610 9611 #ifdef ENABLE_BLE 9612 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9613 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9614 if (!hci_con) return NULL; 9615 return &hci_con->sm_connection; 9616 } 9617 9618 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9619 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9620 #endif 9621 9622 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9623 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9624 if (hci_connection == NULL) return 0; 9625 if (hci_is_le_connection(hci_connection)){ 9626 #ifdef ENABLE_BLE 9627 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9628 if (sm_conn->sm_connection_encrypted != 0u) { 9629 return sm_conn->sm_actual_encryption_key_size; 9630 } 9631 #endif 9632 } else { 9633 #ifdef ENABLE_CLASSIC 9634 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9635 return hci_connection->encryption_key_size; 9636 } 9637 #endif 9638 } 9639 return 0; 9640 } 9641 9642 bool gap_authenticated(hci_con_handle_t con_handle){ 9643 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9644 if (hci_connection == NULL) return false; 9645 9646 switch (hci_connection->address_type){ 9647 #ifdef ENABLE_BLE 9648 case BD_ADDR_TYPE_LE_PUBLIC: 9649 case BD_ADDR_TYPE_LE_RANDOM: 9650 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9651 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9652 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9653 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9654 #endif 9655 #ifdef ENABLE_CLASSIC 9656 case BD_ADDR_TYPE_SCO: 9657 case BD_ADDR_TYPE_ACL: 9658 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9659 #endif 9660 default: 9661 return false; 9662 } 9663 } 9664 9665 bool gap_secure_connection(hci_con_handle_t con_handle){ 9666 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9667 if (hci_connection == NULL) return 0; 9668 9669 switch (hci_connection->address_type){ 9670 #ifdef ENABLE_BLE 9671 case BD_ADDR_TYPE_LE_PUBLIC: 9672 case BD_ADDR_TYPE_LE_RANDOM: 9673 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9674 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9675 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9676 return hci_connection->sm_connection.sm_connection_sc; 9677 #endif 9678 #ifdef ENABLE_CLASSIC 9679 case BD_ADDR_TYPE_SCO: 9680 case BD_ADDR_TYPE_ACL: 9681 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9682 #endif 9683 default: 9684 return false; 9685 } 9686 } 9687 9688 bool gap_bonded(hci_con_handle_t con_handle){ 9689 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9690 if (hci_connection == NULL) return 0; 9691 9692 #ifdef ENABLE_CLASSIC 9693 link_key_t link_key; 9694 link_key_type_t link_key_type; 9695 #endif 9696 switch (hci_connection->address_type){ 9697 #ifdef ENABLE_BLE 9698 case BD_ADDR_TYPE_LE_PUBLIC: 9699 case BD_ADDR_TYPE_LE_RANDOM: 9700 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9701 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9702 return hci_connection->sm_connection.sm_le_db_index >= 0; 9703 #endif 9704 #ifdef ENABLE_CLASSIC 9705 case BD_ADDR_TYPE_SCO: 9706 case BD_ADDR_TYPE_ACL: 9707 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9708 #endif 9709 default: 9710 return false; 9711 } 9712 } 9713 9714 #ifdef ENABLE_BLE 9715 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9716 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9717 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9718 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9719 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9720 return sm_conn->sm_connection_authorization_state; 9721 } 9722 #endif 9723 9724 #ifdef ENABLE_CLASSIC 9725 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){ 9726 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9727 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9728 conn->sniff_min_interval = sniff_min_interval; 9729 conn->sniff_max_interval = sniff_max_interval; 9730 conn->sniff_attempt = sniff_attempt; 9731 conn->sniff_timeout = sniff_timeout; 9732 hci_run(); 9733 return 0; 9734 } 9735 9736 /** 9737 * @brief Exit Sniff mode 9738 * @param con_handle 9739 @ @return 0 if ok 9740 */ 9741 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9742 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9743 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9744 conn->sniff_min_interval = 0xffff; 9745 hci_run(); 9746 return 0; 9747 } 9748 9749 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){ 9750 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9751 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9752 conn->sniff_subrating_max_latency = max_latency; 9753 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9754 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9755 hci_run(); 9756 return ERROR_CODE_SUCCESS; 9757 } 9758 9759 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){ 9760 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9761 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9762 conn->qos_service_type = service_type; 9763 conn->qos_token_rate = token_rate; 9764 conn->qos_peak_bandwidth = peak_bandwidth; 9765 conn->qos_latency = latency; 9766 conn->qos_delay_variation = delay_variation; 9767 hci_run(); 9768 return ERROR_CODE_SUCCESS; 9769 } 9770 9771 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9772 hci_stack->new_page_scan_interval = page_scan_interval; 9773 hci_stack->new_page_scan_window = page_scan_window; 9774 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9775 hci_run(); 9776 } 9777 9778 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9779 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9780 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9781 hci_run(); 9782 } 9783 9784 void gap_set_page_timeout(uint16_t page_timeout){ 9785 hci_stack->page_timeout = page_timeout; 9786 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9787 hci_run(); 9788 } 9789 9790 #endif 9791 9792 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9793 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9794 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9795 if (le_device_db_index >= le_device_db_max_count()) return; 9796 uint8_t offset = le_device_db_index >> 3; 9797 uint8_t mask = 1 << (le_device_db_index & 7); 9798 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9799 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9800 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9801 // note: go back to remove entries, otherwise, a remove + add will skip the add 9802 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9803 } 9804 } 9805 9806 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9807 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9808 if (le_device_db_index >= le_device_db_max_count()) return; 9809 uint8_t offset = le_device_db_index >> 3; 9810 uint8_t mask = 1 << (le_device_db_index & 7); 9811 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9812 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9813 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9814 } 9815 } 9816 9817 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9818 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9819 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9820 } 9821 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9822 // restart le resolving list update 9823 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9824 } 9825 return ERROR_CODE_SUCCESS; 9826 } 9827 9828 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9829 hci_stack->le_privacy_mode = privacy_mode; 9830 } 9831 #endif 9832 9833 #ifdef ENABLE_BLE 9834 #ifdef ENABLE_LE_CENTRAL 9835 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9836 9837 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9838 9839 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9840 // incorrect configuration: 9841 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9842 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9843 btstack_assert(false); 9844 #endif 9845 9846 // check if already in list 9847 btstack_linked_list_iterator_t it; 9848 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9849 while (btstack_linked_list_iterator_has_next(&it)) { 9850 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9851 if (entry->sid != advertising_sid) { 9852 continue; 9853 } 9854 if (entry->address_type != address_type) { 9855 continue; 9856 } 9857 if (memcmp(entry->address, address, 6) != 0) { 9858 continue; 9859 } 9860 // disallow if already scheduled to add 9861 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9862 return ERROR_CODE_COMMAND_DISALLOWED; 9863 } 9864 // still on controller, but scheduled to remove -> re-add 9865 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9866 return ERROR_CODE_SUCCESS; 9867 } 9868 // alloc and add to list 9869 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9870 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9871 entry->sid = advertising_sid; 9872 entry->address_type = address_type; 9873 (void)memcpy(entry->address, address, 6); 9874 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9875 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9876 return ERROR_CODE_SUCCESS; 9877 } 9878 9879 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9880 btstack_linked_list_iterator_t it; 9881 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9882 while (btstack_linked_list_iterator_has_next(&it)){ 9883 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9884 if (entry->sid != advertising_sid) { 9885 continue; 9886 } 9887 if (entry->address_type != address_type) { 9888 continue; 9889 } 9890 if (memcmp(entry->address, address, 6) != 0) { 9891 continue; 9892 } 9893 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9894 // remove from controller if already present 9895 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9896 } else { 9897 // directly remove entry from whitelist 9898 btstack_linked_list_iterator_remove(&it); 9899 btstack_memory_periodic_advertiser_list_entry_free(entry); 9900 } 9901 return ERROR_CODE_SUCCESS; 9902 } 9903 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9904 } 9905 9906 static void hci_periodic_advertiser_list_clear(void){ 9907 btstack_linked_list_iterator_t it; 9908 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9909 while (btstack_linked_list_iterator_has_next(&it)){ 9910 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9911 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9912 // remove from controller if already present 9913 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9914 continue; 9915 } 9916 // directly remove entry from whitelist 9917 btstack_linked_list_iterator_remove(&it); 9918 btstack_memory_periodic_advertiser_list_entry_free(entry); 9919 } 9920 } 9921 9922 uint8_t gap_periodic_advertiser_list_clear(void){ 9923 hci_periodic_advertiser_list_clear(); 9924 hci_run(); 9925 return ERROR_CODE_SUCCESS; 9926 } 9927 9928 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9929 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9930 if (status){ 9931 return status; 9932 } 9933 hci_run(); 9934 return ERROR_CODE_SUCCESS; 9935 } 9936 9937 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9938 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9939 if (status){ 9940 return status; 9941 } 9942 hci_run(); 9943 return ERROR_CODE_SUCCESS; 9944 } 9945 9946 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9947 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9948 // abort if already active 9949 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9950 return ERROR_CODE_COMMAND_DISALLOWED; 9951 } 9952 // store request 9953 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9954 hci_stack->le_periodic_sync_options = options; 9955 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9956 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9957 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9958 hci_stack->le_periodic_sync_skip = skip; 9959 hci_stack->le_periodic_sync_timeout = sync_timeout; 9960 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9961 9962 hci_run(); 9963 return ERROR_CODE_SUCCESS; 9964 } 9965 9966 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9967 // abort if not requested 9968 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9969 return ERROR_CODE_COMMAND_DISALLOWED; 9970 } 9971 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9972 hci_run(); 9973 return ERROR_CODE_SUCCESS; 9974 } 9975 9976 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9977 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9978 return ERROR_CODE_COMMAND_DISALLOWED; 9979 } 9980 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9981 hci_run(); 9982 return ERROR_CODE_SUCCESS; 9983 } 9984 9985 #endif 9986 #endif 9987 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9988 static hci_iso_stream_t * 9989 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9990 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9991 if (iso_stream != NULL){ 9992 iso_stream->iso_type = iso_type; 9993 iso_stream->state = state; 9994 iso_stream->group_id = group_id; 9995 iso_stream->stream_id = stream_id; 9996 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9997 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9998 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9999 } 10000 return iso_stream; 10001 } 10002 10003 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10004 btstack_linked_list_iterator_t it; 10005 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10006 while (btstack_linked_list_iterator_has_next(&it)){ 10007 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10008 if (iso_stream->cis_handle == con_handle ) { 10009 return iso_stream; 10010 } 10011 } 10012 return NULL; 10013 } 10014 10015 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10016 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10017 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10018 btstack_memory_hci_iso_stream_free(iso_stream); 10019 } 10020 10021 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10022 btstack_linked_list_iterator_t it; 10023 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10024 while (btstack_linked_list_iterator_has_next(&it)){ 10025 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10026 if ((iso_stream->group_id == group_id) && 10027 (iso_stream->iso_type == iso_type)){ 10028 btstack_linked_list_iterator_remove(&it); 10029 btstack_memory_hci_iso_stream_free(iso_stream); 10030 } 10031 } 10032 } 10033 10034 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10035 btstack_linked_list_iterator_t it; 10036 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10037 while (btstack_linked_list_iterator_has_next(&it)){ 10038 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10039 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10040 (iso_stream->group_id == group_id)){ 10041 btstack_linked_list_iterator_remove(&it); 10042 btstack_memory_hci_iso_stream_free(iso_stream); 10043 } 10044 } 10045 } 10046 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10047 btstack_linked_list_iterator_t it; 10048 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10049 while (btstack_linked_list_iterator_has_next(&it)){ 10050 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10051 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10052 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10053 } 10054 } 10055 } 10056 10057 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10058 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10059 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10060 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10061 return (sdu_len_offset + 2 + sdu_len) == size; 10062 } 10063 10064 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10065 if (iso_stream == NULL){ 10066 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10067 return; 10068 } 10069 10070 if (hci_stack->iso_packet_handler == NULL) { 10071 return; 10072 } 10073 10074 // parse header 10075 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10076 uint16_t data_total_length = little_endian_read_16(packet, 2); 10077 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10078 10079 // assert packet is complete 10080 if ((data_total_length + 4u) != size){ 10081 return; 10082 } 10083 10084 if ((pb_flag & 0x01) == 0){ 10085 if (pb_flag == 0x02){ 10086 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10087 if (hci_iso_sdu_complete(packet, size)) { 10088 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10089 } 10090 } else { 10091 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10092 if (size > sizeof(iso_stream->reassembly_buffer)){ 10093 return; 10094 } 10095 memcpy(iso_stream->reassembly_buffer, packet, size); 10096 // fix pb_flag 10097 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10098 iso_stream->reassembly_pos = size; 10099 } 10100 } else { 10101 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10102 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10103 if (ts_flag != 0){ 10104 return; 10105 } 10106 // append fragment 10107 if (iso_stream->reassembly_pos == 0){ 10108 return; 10109 } 10110 10111 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10112 // reset reassembly buffer 10113 iso_stream->reassembly_pos = 0; 10114 return; 10115 } 10116 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10117 iso_stream->reassembly_pos += data_total_length; 10118 10119 // deliver if last fragment and SDU complete 10120 if (pb_flag == 0x03){ 10121 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10122 // fix data_total_length 10123 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10124 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10125 } 10126 // reset reassembly buffer 10127 iso_stream->reassembly_pos = 0; 10128 } 10129 } 10130 } 10131 10132 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10133 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10134 uint16_t pos = 0; 10135 event[pos++] = HCI_EVENT_META_GAP; 10136 event[pos++] = 4 + (2 * big->num_bis); 10137 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10138 event[pos++] = status; 10139 event[pos++] = big->big_handle; 10140 event[pos++] = big->num_bis; 10141 uint8_t i; 10142 for (i=0;i<big->num_bis;i++){ 10143 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10144 pos += 2; 10145 } 10146 hci_emit_event(event, pos, 0); 10147 } 10148 10149 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10150 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10151 uint16_t pos = 0; 10152 event[pos++] = HCI_EVENT_META_GAP; 10153 event[pos++] = 4 + (2 * cig->num_cis); 10154 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10155 event[pos++] = status; 10156 event[pos++] = cig->cig_id; 10157 event[pos++] = cig->num_cis; 10158 uint8_t i; 10159 for (i=0;i<cig->num_cis;i++){ 10160 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10161 pos += 2; 10162 } 10163 hci_emit_event(event, pos, 0); 10164 } 10165 10166 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10167 uint16_t pos = 0; 10168 event[pos++] = HCI_EVENT_META_GAP; 10169 event[pos++] = 8; 10170 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10171 event[pos++] = status; 10172 event[pos++] = iso_stream->group_id; 10173 event[pos++] = iso_stream->stream_id; 10174 little_endian_store_16(event, pos, iso_stream->cis_handle); 10175 pos += 2; 10176 little_endian_store_16(event, pos, iso_stream->acl_handle); 10177 pos += 2; 10178 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10179 pos += 2; 10180 event[pos++] = iso_stream->number_of_subevents; 10181 event[pos++] = iso_stream->burst_number_c_to_p; 10182 event[pos++] = iso_stream->burst_number_p_to_c; 10183 event[pos++] = iso_stream->flush_timeout_c_to_p; 10184 event[pos++] = iso_stream->flush_timeout_p_to_c; 10185 return pos; 10186 } 10187 10188 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10189 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10190 // cache data before finalizing struct 10191 uint8_t event [17]; 10192 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10193 btstack_assert(pos <= sizeof(event)); 10194 if (status != ERROR_CODE_SUCCESS){ 10195 hci_iso_stream_finalize(iso_stream); 10196 } 10197 hci_emit_event(event, pos, 0); 10198 } 10199 10200 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10201 uint8_t event [4]; 10202 uint16_t pos = 0; 10203 event[pos++] = HCI_EVENT_META_GAP; 10204 event[pos++] = 2; 10205 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10206 event[pos++] = big->big_handle; 10207 hci_emit_event(event, pos, 0); 10208 } 10209 10210 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10211 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10212 uint16_t pos = 0; 10213 event[pos++] = HCI_EVENT_META_GAP; 10214 event[pos++] = 4; 10215 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10216 event[pos++] = status; 10217 event[pos++] = big_sync->big_handle; 10218 event[pos++] = big_sync->num_bis; 10219 uint8_t i; 10220 for (i=0;i<big_sync->num_bis;i++){ 10221 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10222 pos += 2; 10223 } 10224 hci_emit_event(event, pos, 0); 10225 } 10226 10227 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10228 uint8_t event [4]; 10229 uint16_t pos = 0; 10230 event[pos++] = HCI_EVENT_META_GAP; 10231 event[pos++] = 2; 10232 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10233 event[pos++] = big_handle; 10234 hci_emit_event(event, pos, 0); 10235 } 10236 10237 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10238 uint8_t event[6]; 10239 uint16_t pos = 0; 10240 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10241 event[pos++] = sizeof(event) - 2; 10242 event[pos++] = big->big_handle; 10243 event[pos++] = bis_index; 10244 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10245 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10246 } 10247 10248 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10249 uint8_t event[4]; 10250 uint16_t pos = 0; 10251 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10252 event[pos++] = sizeof(event) - 2; 10253 little_endian_store_16(event, pos, cis_con_handle); 10254 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10255 } 10256 10257 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10258 btstack_linked_list_iterator_t it; 10259 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10260 while (btstack_linked_list_iterator_has_next(&it)){ 10261 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10262 if ( big->big_handle == big_handle ) { 10263 return big; 10264 } 10265 } 10266 return NULL; 10267 } 10268 10269 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10270 btstack_linked_list_iterator_t it; 10271 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10272 while (btstack_linked_list_iterator_has_next(&it)){ 10273 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10274 if ( big_sync->big_handle == big_handle ) { 10275 return big_sync; 10276 } 10277 } 10278 return NULL; 10279 } 10280 10281 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10282 hci_stack->iso_packets_to_queue = num_packets; 10283 } 10284 10285 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10286 btstack_linked_list_iterator_t it; 10287 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10288 while (btstack_linked_list_iterator_has_next(&it)){ 10289 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10290 if ( cig->cig_id == cig_id ) { 10291 return cig; 10292 } 10293 } 10294 return NULL; 10295 } 10296 10297 static void hci_iso_notify_can_send_now(void){ 10298 10299 // BIG 10300 10301 btstack_linked_list_iterator_t it; 10302 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10303 while (btstack_linked_list_iterator_has_next(&it)){ 10304 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10305 // track number completed packet timestamps 10306 if (big->num_completed_timestamp_current_valid){ 10307 big->num_completed_timestamp_current_valid = false; 10308 if (big->num_completed_timestamp_previous_valid){ 10309 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10310 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10311 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10312 big->num_completed_timestamp_previous_ms); 10313 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10314 // to catch up, skip packet on all BIS 10315 uint8_t i; 10316 for (i=0;i<big->num_bis;i++){ 10317 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10318 if (iso_stream){ 10319 iso_stream->num_packets_to_skip++; 10320 } 10321 } 10322 } 10323 } 10324 big->num_completed_timestamp_previous_valid = true; 10325 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10326 } 10327 10328 if (big->can_send_now_requested){ 10329 // check if no outgoing iso packets pending and no can send now have to be emitted 10330 uint8_t i; 10331 bool can_send = true; 10332 uint8_t num_iso_queued_minimum = 0; 10333 for (i=0;i<big->num_bis;i++){ 10334 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10335 if (iso_stream == NULL) continue; 10336 // handle case where individual ISO packet was sent too late: 10337 // for each additionally queued packet, a new one needs to get skipped 10338 if (i==0){ 10339 num_iso_queued_minimum = iso_stream->num_packets_sent; 10340 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10341 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10342 iso_stream->num_packets_to_skip += num_packets_to_skip; 10343 iso_stream->num_packets_sent -= num_packets_to_skip; 10344 } 10345 // check if we can send now 10346 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10347 can_send = false; 10348 break; 10349 } 10350 } 10351 if (can_send){ 10352 // propagate can send now to individual streams 10353 big->can_send_now_requested = false; 10354 for (i=0;i<big->num_bis;i++){ 10355 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10356 iso_stream->emit_ready_to_send = true; 10357 } 10358 } 10359 } 10360 } 10361 10362 if (hci_stack->hci_packet_buffer_reserved) return; 10363 10364 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10365 while (btstack_linked_list_iterator_has_next(&it)){ 10366 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10367 // report bis ready 10368 uint8_t i; 10369 for (i=0;i<big->num_bis;i++){ 10370 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10371 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10372 iso_stream->emit_ready_to_send = false; 10373 hci_emit_bis_can_send_now(big, i); 10374 break; 10375 } 10376 } 10377 } 10378 10379 // CIS 10380 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10381 while (btstack_linked_list_iterator_has_next(&it)) { 10382 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10383 if ((iso_stream->can_send_now_requested) && 10384 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10385 iso_stream->can_send_now_requested = false; 10386 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10387 } 10388 } 10389 } 10390 10391 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10392 // make big handle unique and usuable for big and big sync 10393 if (hci_big_for_handle(big_handle) != NULL){ 10394 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10395 } 10396 if (hci_big_sync_for_handle(big_handle) != NULL){ 10397 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10398 } 10399 if (num_bis == 0){ 10400 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10401 } 10402 if (num_bis > MAX_NR_BIS){ 10403 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10404 } 10405 10406 // reserve ISO Streams 10407 uint8_t i; 10408 uint8_t status = ERROR_CODE_SUCCESS; 10409 for (i=0;i<num_bis;i++){ 10410 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10411 if (iso_stream == NULL) { 10412 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10413 break; 10414 } 10415 } 10416 10417 // free structs on error 10418 if (status != ERROR_CODE_SUCCESS){ 10419 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10420 } 10421 10422 return status; 10423 } 10424 10425 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10426 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10427 if (status != ERROR_CODE_SUCCESS){ 10428 return status; 10429 } 10430 10431 le_audio_big_t * big = storage; 10432 big->big_handle = big_params->big_handle; 10433 big->params = big_params; 10434 big->state = LE_AUDIO_BIG_STATE_CREATE; 10435 big->num_bis = big_params->num_bis; 10436 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10437 10438 hci_run(); 10439 10440 return ERROR_CODE_SUCCESS; 10441 } 10442 10443 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10444 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10445 if (status != ERROR_CODE_SUCCESS){ 10446 return status; 10447 } 10448 10449 le_audio_big_sync_t * big_sync = storage; 10450 big_sync->big_handle = big_sync_params->big_handle; 10451 big_sync->params = big_sync_params; 10452 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10453 big_sync->num_bis = big_sync_params->num_bis; 10454 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10455 10456 hci_run(); 10457 10458 return ERROR_CODE_SUCCESS; 10459 } 10460 10461 uint8_t gap_big_terminate(uint8_t big_handle){ 10462 le_audio_big_t * big = hci_big_for_handle(big_handle); 10463 if (big == NULL){ 10464 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10465 } 10466 switch (big->state){ 10467 case LE_AUDIO_BIG_STATE_CREATE: 10468 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10469 hci_emit_big_terminated(big); 10470 break; 10471 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10472 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10473 break; 10474 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10475 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10476 case LE_AUDIO_BIG_STATE_ACTIVE: 10477 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10478 hci_run(); 10479 break; 10480 default: 10481 return ERROR_CODE_COMMAND_DISALLOWED; 10482 } 10483 return ERROR_CODE_SUCCESS; 10484 } 10485 10486 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10487 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10488 if (big_sync == NULL){ 10489 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10490 } 10491 switch (big_sync->state){ 10492 case LE_AUDIO_BIG_STATE_CREATE: 10493 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10494 hci_emit_big_sync_stopped(big_handle); 10495 break; 10496 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10497 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10498 break; 10499 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10500 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10501 case LE_AUDIO_BIG_STATE_ACTIVE: 10502 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10503 hci_run(); 10504 break; 10505 default: 10506 return ERROR_CODE_COMMAND_DISALLOWED; 10507 } 10508 return ERROR_CODE_SUCCESS; 10509 } 10510 10511 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10512 le_audio_big_t * big = hci_big_for_handle(big_handle); 10513 if (big == NULL){ 10514 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10515 } 10516 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10517 return ERROR_CODE_COMMAND_DISALLOWED; 10518 } 10519 big->can_send_now_requested = true; 10520 hci_iso_notify_can_send_now(); 10521 return ERROR_CODE_SUCCESS; 10522 } 10523 10524 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10525 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10526 if (iso_stream == NULL){ 10527 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10528 } 10529 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10530 return ERROR_CODE_COMMAND_DISALLOWED; 10531 } 10532 iso_stream->can_send_now_requested = true; 10533 hci_iso_notify_can_send_now(); 10534 return ERROR_CODE_SUCCESS; 10535 } 10536 10537 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10538 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10539 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10540 } 10541 if (cig_params->num_cis == 0){ 10542 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10543 } 10544 if (cig_params->num_cis > MAX_NR_CIS){ 10545 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10546 } 10547 10548 // reserve ISO Streams 10549 uint8_t i; 10550 uint8_t status = ERROR_CODE_SUCCESS; 10551 for (i=0;i<cig_params->num_cis;i++){ 10552 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10553 if (iso_stream == NULL) { 10554 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10555 break; 10556 } 10557 } 10558 10559 // free structs on error 10560 if (status != ERROR_CODE_SUCCESS){ 10561 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10562 return status; 10563 } 10564 10565 le_audio_cig_t * cig = storage; 10566 cig->cig_id = cig_params->cig_id; 10567 cig->num_cis = cig_params->num_cis; 10568 cig->params = cig_params; 10569 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10570 for (i=0;i<cig->num_cis;i++){ 10571 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10572 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10573 cig->cis_setup_active[i] = false; 10574 cig->cis_established[i] = false; 10575 } 10576 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10577 10578 hci_run(); 10579 10580 return ERROR_CODE_SUCCESS; 10581 } 10582 10583 uint8_t gap_cig_remove(uint8_t cig_id){ 10584 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10585 if (cig == NULL){ 10586 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10587 } 10588 10589 // close active CIS 10590 uint8_t i; 10591 for (i=0;i<cig->num_cis;i++){ 10592 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10593 if (stream != NULL){ 10594 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10595 } 10596 } 10597 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10598 10599 hci_run(); 10600 10601 return ERROR_CODE_SUCCESS; 10602 } 10603 10604 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10605 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10606 if (cig == NULL){ 10607 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10608 } 10609 10610 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10611 return ERROR_CODE_COMMAND_DISALLOWED; 10612 } 10613 10614 // store ACL Connection Handles 10615 uint8_t i; 10616 for (i=0;i<cig->num_cis;i++){ 10617 // check that all con handles exist and store 10618 hci_con_handle_t cis_handle = cis_con_handles[i]; 10619 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10620 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10621 } 10622 uint8_t j; 10623 bool found = false; 10624 for (j=0;j<cig->num_cis;j++){ 10625 if (cig->cis_con_handles[j] == cis_handle){ 10626 cig->acl_con_handles[j] = acl_con_handles[j]; 10627 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10628 btstack_assert(iso_stream != NULL); 10629 iso_stream->acl_handle = acl_con_handles[j]; 10630 found = true; 10631 break; 10632 } 10633 } 10634 if (!found){ 10635 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10636 } 10637 } 10638 10639 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10640 hci_run(); 10641 10642 return ERROR_CODE_SUCCESS; 10643 } 10644 10645 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10646 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10647 if (iso_stream == NULL){ 10648 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10649 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10650 } 10651 10652 // set next state and continue 10653 iso_stream->state = state; 10654 hci_run(); 10655 return ERROR_CODE_SUCCESS; 10656 } 10657 10658 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10659 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10660 } 10661 10662 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10663 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10664 } 10665 10666 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10667 10668 // GAP Privacy - notify clients before random address update 10669 10670 static bool gap_privacy_client_all_ready(void){ 10671 // check if all ready 10672 btstack_linked_list_iterator_t it; 10673 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10674 while (btstack_linked_list_iterator_has_next(&it)) { 10675 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10676 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10677 return false; 10678 } 10679 } 10680 return true; 10681 } 10682 10683 static void gap_privacy_clients_handle_ready(void){ 10684 // clear 'ready' 10685 btstack_linked_list_iterator_t it; 10686 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10687 while (btstack_linked_list_iterator_has_next(&it)) { 10688 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10689 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10690 } 10691 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10692 hci_run(); 10693 } 10694 10695 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10696 btstack_linked_list_iterator_t it; 10697 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10698 while (btstack_linked_list_iterator_has_next(&it)) { 10699 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10700 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10701 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10702 (*client->callback)(client, new_random_address); 10703 } 10704 } 10705 if (gap_privacy_client_all_ready()){ 10706 gap_privacy_clients_handle_ready(); 10707 } 10708 } 10709 10710 void gap_privacy_client_register(gap_privacy_client_t * client){ 10711 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10712 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10713 } 10714 10715 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10716 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10717 if (gap_privacy_client_all_ready()){ 10718 gap_privacy_clients_handle_ready(); 10719 } 10720 } 10721 10722 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10723 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10724 } 10725 10726 #endif /* ENABLE_BLE */ 10727 10728 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10729 void hci_setup_test_connections_fuzz(void){ 10730 hci_connection_t * conn; 10731 10732 // default address: 66:55:44:33:00:01 10733 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10734 10735 // setup Controller info 10736 hci_stack->num_cmd_packets = 255; 10737 hci_stack->acl_packets_total_num = 255; 10738 10739 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10740 addr[5] = 0x01; 10741 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10742 conn->con_handle = addr[5]; 10743 conn->state = RECEIVED_CONNECTION_REQUEST; 10744 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10745 10746 // setup incoming Classic SCO connection with con handle 0x0002 10747 addr[5] = 0x02; 10748 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10749 conn->con_handle = addr[5]; 10750 conn->state = RECEIVED_CONNECTION_REQUEST; 10751 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10752 10753 // setup ready Classic ACL connection with con handle 0x0003 10754 addr[5] = 0x03; 10755 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10756 conn->con_handle = addr[5]; 10757 conn->state = OPEN; 10758 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10759 10760 // setup ready Classic SCO connection with con handle 0x0004 10761 addr[5] = 0x04; 10762 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10763 conn->con_handle = addr[5]; 10764 conn->state = OPEN; 10765 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10766 10767 // setup ready LE ACL connection with con handle 0x005 and public address 10768 addr[5] = 0x05; 10769 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10770 conn->con_handle = addr[5]; 10771 conn->state = OPEN; 10772 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10773 conn->sm_connection.sm_connection_encrypted = 1; 10774 } 10775 10776 void hci_free_connections_fuzz(void){ 10777 btstack_linked_list_iterator_t it; 10778 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10779 while (btstack_linked_list_iterator_has_next(&it)){ 10780 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10781 btstack_linked_list_iterator_remove(&it); 10782 btstack_memory_hci_connection_free(con); 10783 } 10784 } 10785 void hci_simulate_working_fuzz(void){ 10786 hci_stack->le_scanning_param_update = false; 10787 hci_init_done(); 10788 hci_stack->num_cmd_packets = 255; 10789 } 10790 #endif 10791