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 hci_emit_transport_packet_sent(); 4196 } 4197 } 4198 } 4199 4200 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4201 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4202 if (hci_stack->iso_fragmentation_total_size > 0u) { 4203 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4204 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4205 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4206 hci_stack->iso_fragmentation_total_size = 0; 4207 hci_stack->iso_fragmentation_pos = 0; 4208 if (release_buffer){ 4209 hci_release_packet_buffer(); 4210 } 4211 } 4212 } 4213 4214 // finalize iso stream for CIS handle 4215 iso_stream = hci_iso_stream_for_con_handle(handle); 4216 if (iso_stream != NULL){ 4217 hci_iso_stream_finalize(iso_stream); 4218 break; 4219 } 4220 4221 // finalize iso stream(s) for ACL handle 4222 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4223 while (btstack_linked_list_iterator_has_next(&it)){ 4224 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4225 if (iso_stream->acl_handle == handle ) { 4226 hci_iso_stream_finalize(iso_stream); 4227 } 4228 } 4229 #endif 4230 4231 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4232 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4233 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4234 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4235 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4236 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4237 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4238 hci_stack->num_cmd_packets = 1; 4239 } 4240 #endif 4241 4242 conn = hci_connection_for_handle(handle); 4243 if (!conn) break; 4244 #ifdef ENABLE_CLASSIC 4245 // pairing failed if it was ongoing 4246 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4247 #endif 4248 4249 // emit dedicatd bonding event 4250 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4251 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4252 } 4253 4254 // mark connection for shutdown, stop timers, reset state 4255 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4256 hci_connection_stop_timer(conn); 4257 hci_connection_init(conn); 4258 4259 #ifdef ENABLE_BLE 4260 #ifdef ENABLE_LE_PERIPHERAL 4261 // re-enable advertisements for le connections if active 4262 if (hci_is_le_connection(conn)){ 4263 hci_update_advertisements_enabled_for_current_roles(); 4264 } 4265 #endif 4266 #endif 4267 break; 4268 4269 case HCI_EVENT_HARDWARE_ERROR: 4270 log_error("Hardware Error: 0x%02x", packet[2]); 4271 if (hci_stack->hardware_error_callback){ 4272 (*hci_stack->hardware_error_callback)(packet[2]); 4273 } else { 4274 // if no special requests, just reboot stack 4275 hci_power_control_off(); 4276 hci_power_control_on(); 4277 } 4278 break; 4279 4280 #ifdef ENABLE_CLASSIC 4281 case HCI_EVENT_ROLE_CHANGE: 4282 if (packet[2]) break; // status != 0 4283 reverse_bd_addr(&packet[3], addr); 4284 addr_type = BD_ADDR_TYPE_ACL; 4285 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4286 if (!conn) break; 4287 conn->role = (hci_role_t) packet[9]; 4288 break; 4289 #endif 4290 4291 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4292 // release packet buffer only for asynchronous transport and if there are not further fragments 4293 if (hci_transport_synchronous()) { 4294 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4295 return; // instead of break: to avoid re-entering hci_run() 4296 } 4297 hci_stack->acl_fragmentation_tx_active = 0; 4298 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4299 hci_stack->iso_fragmentation_tx_active = 0; 4300 if (hci_stack->iso_fragmentation_total_size) break; 4301 #endif 4302 if (hci_stack->acl_fragmentation_total_size) break; 4303 hci_release_packet_buffer(); 4304 4305 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4306 hci_iso_notify_can_send_now(); 4307 #endif 4308 // L2CAP receives this event via the hci_emit_event below 4309 4310 #ifdef ENABLE_CLASSIC 4311 // For SCO, we do the can_send_now_check here 4312 hci_notify_if_sco_can_send_now(); 4313 #endif 4314 break; 4315 4316 #ifdef ENABLE_CLASSIC 4317 case HCI_EVENT_SCO_CAN_SEND_NOW: 4318 // For SCO, we do the can_send_now_check here 4319 hci_stack->sco_can_send_now = true; 4320 hci_notify_if_sco_can_send_now(); 4321 return; 4322 4323 // explode inquriy results for easier consumption 4324 case HCI_EVENT_INQUIRY_RESULT: 4325 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4326 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4327 gap_inquiry_explode(packet, size); 4328 break; 4329 #endif 4330 4331 #ifdef ENABLE_BLE 4332 case HCI_EVENT_LE_META: 4333 switch (packet[2]){ 4334 #ifdef ENABLE_LE_CENTRAL 4335 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4336 if (!hci_stack->le_scanning_enabled) break; 4337 le_handle_advertisement_report(packet, size); 4338 break; 4339 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4340 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4341 if (!hci_stack->le_scanning_enabled) break; 4342 le_handle_extended_advertisement_report(packet, size); 4343 break; 4344 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4345 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4346 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4347 break; 4348 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4349 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4350 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4351 while (btstack_linked_list_iterator_has_next(&it)) { 4352 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4353 if (advertising_set->advertising_handle == advertising_handle){ 4354 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4355 } 4356 } 4357 break; 4358 #endif 4359 #endif 4360 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4361 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4362 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4363 hci_handle_le_connection_complete_event(packet); 4364 break; 4365 4366 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4367 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4368 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4369 conn = hci_connection_for_handle(handle); 4370 if (!conn) break; 4371 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4372 break; 4373 4374 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4375 // connection 4376 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4377 conn = hci_connection_for_handle(handle); 4378 if (conn) { 4379 // read arguments 4380 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4381 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4382 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4383 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4384 4385 // validate against current connection parameter range 4386 le_connection_parameter_range_t existing_range; 4387 gap_get_connection_parameter_range(&existing_range); 4388 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4389 if (update_parameter){ 4390 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4391 conn->le_conn_interval_min = le_conn_interval_min; 4392 conn->le_conn_interval_max = le_conn_interval_max; 4393 conn->le_conn_latency = le_conn_latency; 4394 conn->le_supervision_timeout = le_supervision_timeout; 4395 } else { 4396 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4397 } 4398 } 4399 break; 4400 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4401 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4402 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4403 conn = hci_connection_for_handle(handle); 4404 if (conn) { 4405 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4406 } 4407 break; 4408 #endif 4409 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4410 case HCI_SUBEVENT_LE_CIS_REQUEST: 4411 // incoming CIS request, allocate iso stream object and cache metadata 4412 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4413 hci_subevent_le_cis_request_get_cig_id(packet), 4414 hci_subevent_le_cis_request_get_cis_id(packet)); 4415 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4416 if (iso_stream != NULL){ 4417 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4418 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4419 } 4420 break; 4421 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4422 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4423 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4424 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4425 iso_stream = hci_iso_stream_for_con_handle(handle); 4426 btstack_assert(iso_stream != NULL); 4427 // track connection info 4428 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4429 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4430 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4431 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4432 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4433 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4434 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4435 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4436 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4437 // CIS Accept by Peripheral 4438 if (status == ERROR_CODE_SUCCESS){ 4439 if (iso_stream->max_sdu_p_to_c > 0){ 4440 // we're peripheral and we will send data 4441 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4442 } else { 4443 // we're peripheral and we will only receive data 4444 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4445 } 4446 } else { 4447 hci_cis_handle_created(iso_stream, status); 4448 } 4449 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4450 } else { 4451 // CIG Setup by Central 4452 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4453 btstack_assert(cig != NULL); 4454 // update iso stream state 4455 if (status == ERROR_CODE_SUCCESS){ 4456 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4457 } else { 4458 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4459 } 4460 // update cig state 4461 uint8_t i; 4462 for (i=0;i<cig->num_cis;i++){ 4463 if (cig->cis_con_handles[i] == handle){ 4464 cig->cis_setup_active[i] = false; 4465 if (status == ERROR_CODE_SUCCESS){ 4466 cig->cis_established[i] = true; 4467 } else { 4468 hci_cis_handle_created(iso_stream, status); 4469 } 4470 } 4471 } 4472 4473 // trigger iso path setup if complete 4474 bool cis_setup_active = false; 4475 for (i=0;i<cig->num_cis;i++){ 4476 cis_setup_active |= cig->cis_setup_active[i]; 4477 } 4478 if (cis_setup_active == false){ 4479 cig->state_vars.next_cis = 0; 4480 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4481 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4482 } 4483 } 4484 } 4485 break; 4486 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4487 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4488 big = hci_big_for_handle(packet[4]); 4489 if (big != NULL){ 4490 uint8_t status = packet[3]; 4491 if (status == ERROR_CODE_SUCCESS){ 4492 // store bis_con_handles and trigger iso path setup 4493 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4494 uint8_t i; 4495 for (i=0;i<num_bis;i++){ 4496 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4497 big->bis_con_handles[i] = bis_handle; 4498 // assign bis handle 4499 btstack_linked_list_iterator_t it; 4500 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4501 while (btstack_linked_list_iterator_has_next(&it)){ 4502 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4503 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4504 (iso_stream->group_id == big->big_handle)){ 4505 iso_stream->cis_handle = bis_handle; 4506 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4507 break; 4508 } 4509 } 4510 } 4511 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4512 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4513 big->state_vars.next_bis = 0; 4514 } 4515 } else { 4516 // create BIG failed or has been stopped by us 4517 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4518 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4519 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4520 hci_emit_big_created(big, status); 4521 } else { 4522 hci_emit_big_terminated(big); 4523 } 4524 } 4525 } 4526 break; 4527 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4528 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4529 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4530 if (big != NULL){ 4531 // finalize associated ISO streams 4532 btstack_linked_list_iterator_t it; 4533 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4534 while (btstack_linked_list_iterator_has_next(&it)){ 4535 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4536 if (iso_stream->group_id == big->big_handle){ 4537 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4538 btstack_linked_list_iterator_remove(&it); 4539 btstack_memory_hci_iso_stream_free(iso_stream); 4540 } 4541 } 4542 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4543 switch (big->state){ 4544 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4545 hci_emit_big_created(big, big->state_vars.status); 4546 break; 4547 default: 4548 hci_emit_big_terminated(big); 4549 break; 4550 } 4551 } 4552 break; 4553 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4554 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4555 big_sync = hci_big_sync_for_handle(packet[4]); 4556 if (big_sync != NULL){ 4557 uint8_t status = packet[3]; 4558 uint8_t big_handle = packet[4]; 4559 if (status == ERROR_CODE_SUCCESS){ 4560 // store bis_con_handles and trigger iso path setup 4561 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4562 uint8_t i; 4563 for (i=0;i<num_bis;i++){ 4564 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4565 big_sync->bis_con_handles[i] = bis_handle; 4566 // setup iso_stream_t 4567 btstack_linked_list_iterator_t it; 4568 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4569 while (btstack_linked_list_iterator_has_next(&it)){ 4570 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4571 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4572 (iso_stream->group_id == big_sync->big_handle)){ 4573 iso_stream->cis_handle = bis_handle; 4574 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4575 break; 4576 } 4577 } 4578 } 4579 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4580 // trigger iso path setup 4581 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4582 big_sync->state_vars.next_bis = 0; 4583 } 4584 } else { 4585 // create BIG Sync failed or has been stopped by us 4586 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4587 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4588 hci_emit_big_sync_created(big_sync, status); 4589 } else { 4590 hci_emit_big_sync_stopped(big_handle); 4591 } 4592 } 4593 } 4594 break; 4595 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4596 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4597 big_sync = hci_big_sync_for_handle(packet[4]); 4598 if (big_sync != NULL){ 4599 uint8_t big_handle = packet[4]; 4600 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4601 hci_emit_big_sync_stopped(big_handle); 4602 } 4603 break; 4604 #endif 4605 default: 4606 break; 4607 } 4608 break; 4609 #endif 4610 case HCI_EVENT_VENDOR_SPECIFIC: 4611 // Vendor specific commands often create vendor specific event instead of num completed packets 4612 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4613 switch (hci_stack->manufacturer){ 4614 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4615 hci_stack->num_cmd_packets = 1; 4616 break; 4617 default: 4618 break; 4619 } 4620 break; 4621 default: 4622 break; 4623 } 4624 4625 handle_event_for_current_stack_state(packet, size); 4626 4627 // notify upper stack 4628 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4629 4630 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4631 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4632 handle = little_endian_read_16(packet, 3); 4633 hci_connection_t * aConn = hci_connection_for_handle(handle); 4634 // discard connection if app did not trigger a reconnect in the event handler 4635 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4636 hci_shutdown_connection(aConn); 4637 } 4638 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4639 hci_controller_dump_packets(); 4640 #endif 4641 } 4642 4643 // execute main loop 4644 hci_run(); 4645 } 4646 4647 #ifdef ENABLE_CLASSIC 4648 4649 static void sco_handler(uint8_t * packet, uint16_t size){ 4650 // lookup connection struct 4651 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4652 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4653 if (!conn) return; 4654 4655 #ifdef ENABLE_SCO_OVER_HCI 4656 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4657 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4658 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4659 packet[2] = 0x3c; 4660 memmove(&packet[3], &packet[23], 63); 4661 size = 63; 4662 } 4663 } 4664 4665 if (hci_have_usb_transport()){ 4666 // Nothing to do 4667 } else { 4668 // 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); 4669 if (hci_stack->synchronous_flow_control_enabled == 0){ 4670 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4671 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4672 if (conn->sco_tx_active == 0){ 4673 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4674 conn->sco_tx_active = 1; 4675 conn->sco_tx_ready = max_sco_packets; 4676 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4677 hci_notify_if_sco_can_send_now(); 4678 } 4679 } else { 4680 if (conn->sco_tx_ready < max_sco_packets){ 4681 conn->sco_tx_ready++; 4682 } 4683 hci_notify_if_sco_can_send_now(); 4684 } 4685 } 4686 } 4687 #endif 4688 4689 // deliver to app 4690 if (hci_stack->sco_packet_handler) { 4691 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4692 } 4693 4694 #ifdef HAVE_SCO_TRANSPORT 4695 // We can send one packet for each received packet 4696 conn->sco_tx_ready++; 4697 hci_notify_if_sco_can_send_now(); 4698 #endif 4699 4700 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4701 conn->num_packets_completed++; 4702 hci_stack->host_completed_packets = 1; 4703 hci_run(); 4704 #endif 4705 } 4706 #endif 4707 4708 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4709 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4710 // propagate ISO packets received as ACL 4711 hci_iso_stream_t * iso_stream = NULL; 4712 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4713 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4714 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4715 if (iso_stream != NULL){ 4716 packet_type = HCI_ISO_DATA_PACKET; 4717 } 4718 } 4719 #endif 4720 4721 hci_dump_packet(packet_type, 1, packet, size); 4722 switch (packet_type) { 4723 case HCI_EVENT_PACKET: 4724 event_handler(packet, size); 4725 break; 4726 case HCI_ACL_DATA_PACKET: 4727 acl_handler(packet, size); 4728 break; 4729 #ifdef ENABLE_CLASSIC 4730 case HCI_SCO_DATA_PACKET: 4731 sco_handler(packet, size); 4732 break; 4733 #endif 4734 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4735 case HCI_ISO_DATA_PACKET: 4736 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4737 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4738 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4739 } 4740 hci_iso_packet_handler(iso_stream, packet, size); 4741 break; 4742 #endif 4743 default: 4744 break; 4745 } 4746 } 4747 4748 /** 4749 * @brief Add event packet handler. 4750 */ 4751 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4752 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4753 } 4754 4755 /** 4756 * @brief Remove event packet handler. 4757 */ 4758 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4759 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4760 } 4761 4762 /** Register HCI packet handlers */ 4763 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4764 hci_stack->acl_packet_handler = handler; 4765 } 4766 4767 #ifdef ENABLE_CLASSIC 4768 /** 4769 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4770 */ 4771 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4772 hci_stack->sco_packet_handler = handler; 4773 } 4774 #endif 4775 4776 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4777 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4778 hci_stack->iso_packet_handler = handler; 4779 } 4780 #endif 4781 4782 static void hci_state_reset(void){ 4783 // no connections yet 4784 hci_stack->connections = NULL; 4785 4786 // keep discoverable/connectable as this has been requested by the client(s) 4787 // hci_stack->discoverable = 0; 4788 // hci_stack->connectable = 0; 4789 // hci_stack->bondable = 1; 4790 // hci_stack->own_addr_type = 0; 4791 4792 // buffer is free 4793 hci_stack->hci_packet_buffer_reserved = false; 4794 4795 // no pending cmds 4796 hci_stack->decline_reason = 0; 4797 4798 hci_stack->secure_connections_active = false; 4799 4800 #ifdef ENABLE_CLASSIC 4801 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4802 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4803 4804 hci_stack->gap_tasks_classic = 4805 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4806 GAP_TASK_SET_CLASS_OF_DEVICE | 4807 GAP_TASK_SET_LOCAL_NAME | 4808 GAP_TASK_SET_EIR_DATA | 4809 GAP_TASK_WRITE_SCAN_ENABLE | 4810 GAP_TASK_WRITE_PAGE_TIMEOUT; 4811 #endif 4812 4813 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4814 hci_stack->classic_read_local_oob_data = false; 4815 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4816 #endif 4817 4818 // LE 4819 #ifdef ENABLE_BLE 4820 memset(hci_stack->le_random_address, 0, 6); 4821 hci_stack->le_random_address_set = 0; 4822 #endif 4823 #ifdef ENABLE_LE_CENTRAL 4824 hci_stack->le_scanning_active = false; 4825 hci_stack->le_scanning_param_update = true; 4826 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4827 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4828 hci_stack->le_whitelist_capacity = 0; 4829 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4830 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4831 #endif 4832 #endif 4833 #ifdef ENABLE_LE_PERIPHERAL 4834 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4835 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4836 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4837 } 4838 if (hci_stack->le_advertisements_data != NULL){ 4839 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4840 } 4841 #endif 4842 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4843 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4844 #endif 4845 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4846 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4847 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4848 #endif 4849 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4850 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4851 #endif 4852 } 4853 4854 #ifdef ENABLE_CLASSIC 4855 /** 4856 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4857 */ 4858 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4859 // store and open remote device db 4860 hci_stack->link_key_db = link_key_db; 4861 if (hci_stack->link_key_db) { 4862 hci_stack->link_key_db->open(); 4863 } 4864 } 4865 #endif 4866 4867 void hci_init(const hci_transport_t *transport, const void *config){ 4868 4869 #ifdef HAVE_MALLOC 4870 if (!hci_stack) { 4871 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4872 } 4873 #else 4874 hci_stack = &hci_stack_static; 4875 #endif 4876 memset(hci_stack, 0, sizeof(hci_stack_t)); 4877 4878 // reference to use transport layer implementation 4879 hci_stack->hci_transport = transport; 4880 4881 // reference to used config 4882 hci_stack->config = config; 4883 4884 // setup pointer for outgoing packet buffer 4885 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4886 4887 // max acl payload size defined in config.h 4888 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4889 4890 // register packet handlers with transport 4891 transport->register_packet_handler(&packet_handler); 4892 4893 hci_stack->state = HCI_STATE_OFF; 4894 4895 // class of device 4896 hci_stack->class_of_device = 0x007a020c; // Smartphone 4897 4898 // bondable by default 4899 hci_stack->bondable = 1; 4900 4901 #ifdef ENABLE_CLASSIC 4902 // classic name 4903 hci_stack->local_name = default_classic_name; 4904 4905 // Master slave policy 4906 hci_stack->master_slave_policy = 1; 4907 4908 // Allow Role Switch 4909 hci_stack->allow_role_switch = 1; 4910 4911 // Default / minimum security level = 2 4912 hci_stack->gap_security_level = LEVEL_2; 4913 4914 // Default Security Mode 4 4915 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4916 4917 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4918 hci_stack->gap_required_encyrption_key_size = 7; 4919 4920 // Link Supervision Timeout 4921 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4922 4923 // All ACL packet types are enabledh 4924 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4925 #endif 4926 4927 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4928 hci_stack->ssp_enable = 1; 4929 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4930 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4931 hci_stack->ssp_auto_accept = 1; 4932 4933 // Secure Connections: enable (requires support from Controller) 4934 hci_stack->secure_connections_enable = true; 4935 4936 // voice setting - signed 16 bit pcm data with CVSD over the air 4937 hci_stack->sco_voice_setting = 0x60; 4938 4939 #ifdef ENABLE_BLE 4940 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4941 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4942 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4943 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4944 hci_stack->le_connection_latency = 4; // 4 4945 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4946 hci_stack->le_minimum_ce_length = 0; // 0 ms 4947 hci_stack->le_maximum_ce_length = 0; // 0 ms 4948 #endif 4949 4950 #ifdef ENABLE_LE_CENTRAL 4951 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4952 4953 // default LE Scanning 4954 hci_stack->le_scan_type = 0x01; // active 4955 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4956 hci_stack->le_scan_window = 0x30; // 30 ms 4957 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4958 #endif 4959 4960 #ifdef ENABLE_LE_PERIPHERAL 4961 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4962 4963 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4964 hci_stack->le_advertisements_interval_min = 0x0800; 4965 hci_stack->le_advertisements_interval_max = 0x0800; 4966 hci_stack->le_advertisements_type = 0; 4967 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4968 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4969 hci_stack->le_advertisements_channel_map = 0x07; 4970 hci_stack->le_advertisements_filter_policy = 0; 4971 #endif 4972 4973 // connection parameter range used to answer connection parameter update requests in l2cap 4974 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4975 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4976 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4977 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4978 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4979 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4980 4981 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4982 hci_stack->iso_packets_to_queue = 1; 4983 #endif 4984 4985 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4986 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4987 #endif 4988 4989 hci_state_reset(); 4990 } 4991 4992 void hci_deinit(void){ 4993 btstack_run_loop_remove_timer(&hci_stack->timeout); 4994 #ifdef HAVE_MALLOC 4995 if (hci_stack) { 4996 free(hci_stack); 4997 } 4998 #endif 4999 hci_stack = NULL; 5000 5001 #ifdef ENABLE_CLASSIC 5002 disable_l2cap_timeouts = 0; 5003 #endif 5004 } 5005 5006 /** 5007 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5008 */ 5009 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5010 hci_stack->chipset = chipset_driver; 5011 5012 // reset chipset driver - init is also called on power_up 5013 if (hci_stack->chipset && hci_stack->chipset->init){ 5014 hci_stack->chipset->init(hci_stack->config); 5015 } 5016 } 5017 5018 void hci_enable_custom_pre_init(void){ 5019 hci_stack->chipset_pre_init = true; 5020 } 5021 5022 /** 5023 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5024 */ 5025 void hci_set_control(const btstack_control_t *hardware_control){ 5026 // references to used control implementation 5027 hci_stack->control = hardware_control; 5028 // init with transport config 5029 hardware_control->init(hci_stack->config); 5030 } 5031 5032 static void hci_discard_connections(void){ 5033 btstack_linked_list_iterator_t it; 5034 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5035 while (btstack_linked_list_iterator_has_next(&it)){ 5036 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5037 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5038 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5039 hci_shutdown_connection(connection); 5040 } 5041 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5042 while (hci_stack->iso_streams != NULL){ 5043 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5044 } 5045 #endif 5046 } 5047 5048 void hci_close(void){ 5049 5050 #ifdef ENABLE_CLASSIC 5051 // close remote device db 5052 if (hci_stack->link_key_db) { 5053 hci_stack->link_key_db->close(); 5054 } 5055 #endif 5056 5057 hci_discard_connections(); 5058 5059 hci_power_control(HCI_POWER_OFF); 5060 5061 #ifdef HAVE_MALLOC 5062 free(hci_stack); 5063 #endif 5064 hci_stack = NULL; 5065 } 5066 5067 #ifdef HAVE_SCO_TRANSPORT 5068 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5069 hci_stack->sco_transport = sco_transport; 5070 sco_transport->register_packet_handler(&packet_handler); 5071 } 5072 #endif 5073 5074 #ifdef ENABLE_CLASSIC 5075 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5076 // validate ranage and set 5077 if (encryption_key_size < 7) return; 5078 if (encryption_key_size > 16) return; 5079 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5080 } 5081 5082 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5083 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5084 hci_stack->gap_security_mode = security_mode; 5085 return ERROR_CODE_SUCCESS; 5086 } else { 5087 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5088 } 5089 } 5090 5091 gap_security_mode_t gap_get_security_mode(void){ 5092 return hci_stack->gap_security_mode; 5093 } 5094 5095 void gap_set_security_level(gap_security_level_t security_level){ 5096 hci_stack->gap_security_level = security_level; 5097 } 5098 5099 gap_security_level_t gap_get_security_level(void){ 5100 if (hci_stack->gap_secure_connections_only_mode){ 5101 return LEVEL_4; 5102 } 5103 return hci_stack->gap_security_level; 5104 } 5105 5106 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5107 hci_stack->gap_minimal_service_security_level = security_level; 5108 } 5109 5110 void gap_set_secure_connections_only_mode(bool enable){ 5111 hci_stack->gap_secure_connections_only_mode = enable; 5112 } 5113 5114 bool gap_get_secure_connections_only_mode(void){ 5115 return hci_stack->gap_secure_connections_only_mode; 5116 } 5117 #endif 5118 5119 #ifdef ENABLE_CLASSIC 5120 void gap_set_class_of_device(uint32_t class_of_device){ 5121 hci_stack->class_of_device = class_of_device; 5122 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5123 hci_run(); 5124 } 5125 5126 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5127 hci_stack->default_link_policy_settings = default_link_policy_settings; 5128 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5129 hci_run(); 5130 } 5131 5132 void gap_set_allow_role_switch(bool allow_role_switch){ 5133 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5134 } 5135 5136 uint8_t hci_get_allow_role_switch(void){ 5137 return hci_stack->allow_role_switch; 5138 } 5139 5140 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5141 hci_stack->link_supervision_timeout = link_supervision_timeout; 5142 } 5143 5144 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5145 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5146 } 5147 5148 uint16_t hci_automatic_flush_timeout(void){ 5149 return hci_stack->automatic_flush_timeout; 5150 } 5151 5152 void hci_disable_l2cap_timeout_check(void){ 5153 disable_l2cap_timeouts = 1; 5154 } 5155 #endif 5156 5157 #ifndef HAVE_HOST_CONTROLLER_API 5158 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5159 void hci_set_bd_addr(bd_addr_t addr){ 5160 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5161 hci_stack->custom_bd_addr_set = 1; 5162 } 5163 #endif 5164 5165 // State-Module-Driver overview 5166 // state module low-level 5167 // HCI_STATE_OFF off close 5168 // HCI_STATE_INITIALIZING, on open 5169 // HCI_STATE_WORKING, on open 5170 // HCI_STATE_HALTING, on open 5171 // HCI_STATE_SLEEPING, off/sleep close 5172 // HCI_STATE_FALLING_ASLEEP on open 5173 5174 static int hci_power_control_on(void){ 5175 5176 // power on 5177 int err = 0; 5178 if (hci_stack->control && hci_stack->control->on){ 5179 err = (*hci_stack->control->on)(); 5180 } 5181 if (err){ 5182 log_error( "POWER_ON failed"); 5183 hci_emit_hci_open_failed(); 5184 return err; 5185 } 5186 5187 // int chipset driver 5188 if (hci_stack->chipset && hci_stack->chipset->init){ 5189 hci_stack->chipset->init(hci_stack->config); 5190 } 5191 5192 // init transport 5193 if (hci_stack->hci_transport->init){ 5194 hci_stack->hci_transport->init(hci_stack->config); 5195 } 5196 5197 // open transport 5198 err = hci_stack->hci_transport->open(); 5199 if (err){ 5200 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5201 if (hci_stack->control && hci_stack->control->off){ 5202 (*hci_stack->control->off)(); 5203 } 5204 hci_emit_hci_open_failed(); 5205 return err; 5206 } 5207 return 0; 5208 } 5209 5210 static void hci_power_control_off(void){ 5211 5212 log_info("hci_power_control_off"); 5213 5214 // close low-level device 5215 hci_stack->hci_transport->close(); 5216 5217 log_info("hci_power_control_off - hci_transport closed"); 5218 5219 // power off 5220 if (hci_stack->control && hci_stack->control->off){ 5221 (*hci_stack->control->off)(); 5222 } 5223 5224 log_info("hci_power_control_off - control closed"); 5225 5226 hci_stack->state = HCI_STATE_OFF; 5227 } 5228 5229 static void hci_power_control_sleep(void){ 5230 5231 log_info("hci_power_control_sleep"); 5232 5233 #if 0 5234 // don't close serial port during sleep 5235 5236 // close low-level device 5237 hci_stack->hci_transport->close(hci_stack->config); 5238 #endif 5239 5240 // sleep mode 5241 if (hci_stack->control && hci_stack->control->sleep){ 5242 (*hci_stack->control->sleep)(); 5243 } 5244 5245 hci_stack->state = HCI_STATE_SLEEPING; 5246 } 5247 5248 static int hci_power_control_wake(void){ 5249 5250 log_info("hci_power_control_wake"); 5251 5252 // wake on 5253 if (hci_stack->control && hci_stack->control->wake){ 5254 (*hci_stack->control->wake)(); 5255 } 5256 5257 #if 0 5258 // open low-level device 5259 int err = hci_stack->hci_transport->open(hci_stack->config); 5260 if (err){ 5261 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5262 if (hci_stack->control && hci_stack->control->off){ 5263 (*hci_stack->control->off)(); 5264 } 5265 hci_emit_hci_open_failed(); 5266 return err; 5267 } 5268 #endif 5269 5270 return 0; 5271 } 5272 5273 static void hci_power_enter_initializing_state(void){ 5274 // set up state machine 5275 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5276 hci_stack->hci_packet_buffer_reserved = false; 5277 hci_stack->state = HCI_STATE_INITIALIZING; 5278 5279 #ifndef HAVE_HOST_CONTROLLER_API 5280 if (hci_stack->chipset_pre_init) { 5281 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5282 } else 5283 #endif 5284 { 5285 hci_stack->substate = HCI_INIT_SEND_RESET; 5286 } 5287 } 5288 5289 static void hci_power_enter_halting_state(void){ 5290 #ifdef ENABLE_BLE 5291 // drop entries scheduled for removal, mark others for re-adding 5292 btstack_linked_list_iterator_t it; 5293 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5294 while (btstack_linked_list_iterator_has_next(&it)){ 5295 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5296 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5297 btstack_linked_list_iterator_remove(&it); 5298 btstack_memory_whitelist_entry_free(entry); 5299 } else { 5300 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5301 } 5302 } 5303 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5304 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5305 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5306 while (btstack_linked_list_iterator_has_next(&it)){ 5307 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5308 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5309 btstack_linked_list_iterator_remove(&it); 5310 btstack_memory_periodic_advertiser_list_entry_free(entry); 5311 } else { 5312 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5313 continue; 5314 } 5315 } 5316 #endif 5317 #endif 5318 // see hci_run 5319 hci_stack->state = HCI_STATE_HALTING; 5320 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5321 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5322 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5323 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5324 btstack_run_loop_add_timer(&hci_stack->timeout); 5325 } 5326 5327 // returns error 5328 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5329 int err; 5330 switch (power_mode){ 5331 case HCI_POWER_ON: 5332 err = hci_power_control_on(); 5333 if (err != 0) { 5334 log_error("hci_power_control_on() error %d", err); 5335 return err; 5336 } 5337 hci_power_enter_initializing_state(); 5338 break; 5339 case HCI_POWER_OFF: 5340 // do nothing 5341 break; 5342 case HCI_POWER_SLEEP: 5343 // do nothing (with SLEEP == OFF) 5344 break; 5345 default: 5346 btstack_assert(false); 5347 break; 5348 } 5349 return ERROR_CODE_SUCCESS; 5350 } 5351 5352 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5353 switch (power_mode){ 5354 case HCI_POWER_ON: 5355 // do nothing 5356 break; 5357 case HCI_POWER_OFF: 5358 // no connections yet, just turn it off 5359 hci_power_control_off(); 5360 break; 5361 case HCI_POWER_SLEEP: 5362 // no connections yet, just turn it off 5363 hci_power_control_sleep(); 5364 break; 5365 default: 5366 btstack_assert(false); 5367 break; 5368 } 5369 return ERROR_CODE_SUCCESS; 5370 } 5371 5372 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5373 switch (power_mode){ 5374 case HCI_POWER_ON: 5375 // do nothing 5376 break; 5377 case HCI_POWER_OFF: 5378 hci_power_enter_halting_state(); 5379 break; 5380 case HCI_POWER_SLEEP: 5381 // see hci_run 5382 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5383 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5384 break; 5385 default: 5386 btstack_assert(false); 5387 break; 5388 } 5389 return ERROR_CODE_SUCCESS; 5390 } 5391 5392 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5393 switch (power_mode){ 5394 case HCI_POWER_ON: 5395 hci_power_enter_initializing_state(); 5396 break; 5397 case HCI_POWER_OFF: 5398 // do nothing 5399 break; 5400 case HCI_POWER_SLEEP: 5401 // see hci_run 5402 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5403 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5404 break; 5405 default: 5406 btstack_assert(false); 5407 break; 5408 } 5409 return ERROR_CODE_SUCCESS; 5410 } 5411 5412 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5413 switch (power_mode){ 5414 case HCI_POWER_ON: 5415 hci_power_enter_initializing_state(); 5416 break; 5417 case HCI_POWER_OFF: 5418 hci_power_enter_halting_state(); 5419 break; 5420 case HCI_POWER_SLEEP: 5421 // do nothing 5422 break; 5423 default: 5424 btstack_assert(false); 5425 break; 5426 } 5427 return ERROR_CODE_SUCCESS; 5428 } 5429 5430 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5431 int err; 5432 switch (power_mode){ 5433 case HCI_POWER_ON: 5434 err = hci_power_control_wake(); 5435 if (err) return err; 5436 hci_power_enter_initializing_state(); 5437 break; 5438 case HCI_POWER_OFF: 5439 hci_power_enter_halting_state(); 5440 break; 5441 case HCI_POWER_SLEEP: 5442 // do nothing 5443 break; 5444 default: 5445 btstack_assert(false); 5446 break; 5447 } 5448 return ERROR_CODE_SUCCESS; 5449 } 5450 5451 int hci_power_control(HCI_POWER_MODE power_mode){ 5452 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5453 btstack_run_loop_remove_timer(&hci_stack->timeout); 5454 int err = 0; 5455 switch (hci_stack->state){ 5456 case HCI_STATE_OFF: 5457 err = hci_power_control_state_off(power_mode); 5458 break; 5459 case HCI_STATE_INITIALIZING: 5460 err = hci_power_control_state_initializing(power_mode); 5461 break; 5462 case HCI_STATE_WORKING: 5463 err = hci_power_control_state_working(power_mode); 5464 break; 5465 case HCI_STATE_HALTING: 5466 err = hci_power_control_state_halting(power_mode); 5467 break; 5468 case HCI_STATE_FALLING_ASLEEP: 5469 err = hci_power_control_state_falling_asleep(power_mode); 5470 break; 5471 case HCI_STATE_SLEEPING: 5472 err = hci_power_control_state_sleeping(power_mode); 5473 break; 5474 default: 5475 btstack_assert(false); 5476 break; 5477 } 5478 if (err != 0){ 5479 return err; 5480 } 5481 5482 // create internal event 5483 hci_emit_state(); 5484 5485 // trigger next/first action 5486 hci_run(); 5487 5488 return 0; 5489 } 5490 5491 5492 static void hci_halting_run(void) { 5493 5494 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5495 5496 hci_connection_t *connection; 5497 #ifdef ENABLE_BLE 5498 #ifdef ENABLE_LE_PERIPHERAL 5499 bool stop_advertismenets; 5500 #endif 5501 #endif 5502 5503 switch (hci_stack->substate) { 5504 case HCI_HALTING_CLASSIC_STOP: 5505 #ifdef ENABLE_CLASSIC 5506 if (!hci_can_send_command_packet_now()) return; 5507 5508 if (hci_stack->connectable || hci_stack->discoverable){ 5509 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5510 hci_send_cmd(&hci_write_scan_enable, 0); 5511 return; 5512 } 5513 #endif 5514 /* fall through */ 5515 5516 case HCI_HALTING_LE_ADV_STOP: 5517 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5518 5519 #ifdef ENABLE_BLE 5520 #ifdef ENABLE_LE_PERIPHERAL 5521 if (!hci_can_send_command_packet_now()) return; 5522 5523 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5524 5525 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5526 if (hci_le_extended_advertising_supported()){ 5527 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5528 btstack_linked_list_iterator_t it; 5529 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5530 // stop all periodic advertisements and check if an extended set is active 5531 while (btstack_linked_list_iterator_has_next(&it)){ 5532 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5533 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5534 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5535 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5536 return; 5537 } 5538 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5539 stop_advertismenets = true; 5540 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5541 } 5542 } 5543 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5544 if (stop_advertismenets){ 5545 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5546 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5547 return; 5548 } 5549 } else 5550 #else /* ENABLE_LE_PERIPHERAL */ 5551 { 5552 if (stop_advertismenets) { 5553 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5554 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5555 return; 5556 } 5557 } 5558 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5559 #endif /* ENABLE_LE_PERIPHERAL */ 5560 #endif /* ENABLE_BLE */ 5561 5562 /* fall through */ 5563 5564 case HCI_HALTING_LE_SCAN_STOP: 5565 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5566 if (!hci_can_send_command_packet_now()) return; 5567 5568 #ifdef ENABLE_BLE 5569 #ifdef ENABLE_LE_CENTRAL 5570 if (hci_stack->le_scanning_active){ 5571 hci_le_scan_stop(); 5572 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5573 return; 5574 } 5575 #endif 5576 #endif 5577 5578 /* fall through */ 5579 5580 case HCI_HALTING_DISCONNECT_ALL: 5581 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5582 if (!hci_can_send_command_packet_now()) return; 5583 5584 // close all open connections 5585 connection = (hci_connection_t *) hci_stack->connections; 5586 if (connection) { 5587 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5588 5589 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5590 5591 // check state 5592 switch(connection->state) { 5593 case SENT_DISCONNECT: 5594 case RECEIVED_DISCONNECTION_COMPLETE: 5595 // wait until connection is gone 5596 return; 5597 default: 5598 break; 5599 } 5600 5601 // finally, send the disconnect command 5602 connection->state = SENT_DISCONNECT; 5603 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5604 return; 5605 } 5606 5607 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5608 // stop BIGs and BIG Syncs 5609 if (hci_stack->le_audio_bigs != NULL){ 5610 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5611 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5612 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5613 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5614 return; 5615 } 5616 if (hci_stack->le_audio_big_syncs != NULL){ 5617 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5618 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5619 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5620 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5621 return; 5622 } 5623 #endif 5624 5625 btstack_run_loop_remove_timer(&hci_stack->timeout); 5626 5627 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5628 log_info("HCI_STATE_HALTING: wait 50 ms"); 5629 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5630 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5631 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5632 btstack_run_loop_add_timer(&hci_stack->timeout); 5633 break; 5634 5635 case HCI_HALTING_W4_CLOSE_TIMER: 5636 // keep waiting 5637 break; 5638 5639 case HCI_HALTING_CLOSE: 5640 // close left over connections (that had not been properly closed before) 5641 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5642 hci_discard_connections(); 5643 5644 log_info("HCI_STATE_HALTING, calling off"); 5645 5646 // switch mode 5647 hci_power_control_off(); 5648 5649 log_info("HCI_STATE_HALTING, emitting state"); 5650 hci_emit_state(); 5651 log_info("HCI_STATE_HALTING, done"); 5652 break; 5653 5654 default: 5655 break; 5656 } 5657 }; 5658 5659 static void hci_falling_asleep_run(void){ 5660 hci_connection_t * connection; 5661 switch(hci_stack->substate) { 5662 case HCI_FALLING_ASLEEP_DISCONNECT: 5663 log_info("HCI_STATE_FALLING_ASLEEP"); 5664 // close all open connections 5665 connection = (hci_connection_t *) hci_stack->connections; 5666 if (connection){ 5667 5668 // send disconnect 5669 if (!hci_can_send_command_packet_now()) return; 5670 5671 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5672 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5673 5674 // send disconnected event right away - causes higher layer connections to get closed, too. 5675 hci_shutdown_connection(connection); 5676 return; 5677 } 5678 5679 if (hci_classic_supported()){ 5680 // disable page and inquiry scan 5681 if (!hci_can_send_command_packet_now()) return; 5682 5683 log_info("HCI_STATE_HALTING, disabling inq scans"); 5684 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5685 5686 // continue in next sub state 5687 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5688 break; 5689 } 5690 5691 /* fall through */ 5692 5693 case HCI_FALLING_ASLEEP_COMPLETE: 5694 log_info("HCI_STATE_HALTING, calling sleep"); 5695 // switch mode 5696 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5697 hci_emit_state(); 5698 break; 5699 5700 default: 5701 break; 5702 } 5703 } 5704 5705 #ifdef ENABLE_CLASSIC 5706 5707 static void hci_update_scan_enable(void){ 5708 // 2 = page scan, 1 = inq scan 5709 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5710 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5711 hci_run(); 5712 } 5713 5714 void gap_discoverable_control(uint8_t enable){ 5715 if (enable) enable = 1; // normalize argument 5716 5717 if (hci_stack->discoverable == enable){ 5718 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5719 return; 5720 } 5721 5722 hci_stack->discoverable = enable; 5723 hci_update_scan_enable(); 5724 } 5725 5726 void gap_connectable_control(uint8_t enable){ 5727 if (enable) enable = 1; // normalize argument 5728 5729 // don't emit event 5730 if (hci_stack->connectable == enable) return; 5731 5732 hci_stack->connectable = enable; 5733 hci_update_scan_enable(); 5734 } 5735 #endif 5736 5737 void gap_local_bd_addr(bd_addr_t address_buffer){ 5738 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5739 } 5740 5741 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5742 static void hci_host_num_completed_packets(void){ 5743 5744 // create packet manually as arrays are not supported and num_commands should not get reduced 5745 hci_reserve_packet_buffer(); 5746 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5747 5748 uint16_t size = 0; 5749 uint16_t num_handles = 0; 5750 packet[size++] = 0x35; 5751 packet[size++] = 0x0c; 5752 size++; // skip param len 5753 size++; // skip num handles 5754 5755 // add { handle, packets } entries 5756 btstack_linked_item_t * it; 5757 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5758 hci_connection_t * connection = (hci_connection_t *) it; 5759 if (connection->num_packets_completed){ 5760 little_endian_store_16(packet, size, connection->con_handle); 5761 size += 2; 5762 little_endian_store_16(packet, size, connection->num_packets_completed); 5763 size += 2; 5764 // 5765 num_handles++; 5766 connection->num_packets_completed = 0; 5767 } 5768 } 5769 5770 packet[2] = size - 3; 5771 packet[3] = num_handles; 5772 5773 hci_stack->host_completed_packets = 0; 5774 5775 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5776 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5777 5778 // release packet buffer for synchronous transport implementations 5779 if (hci_transport_synchronous()){ 5780 hci_release_packet_buffer(); 5781 hci_emit_transport_packet_sent(); 5782 } 5783 } 5784 #endif 5785 5786 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5787 UNUSED(ds); 5788 hci_stack->substate = HCI_HALTING_CLOSE; 5789 hci_halting_run(); 5790 } 5791 5792 static bool hci_run_acl_fragments(void){ 5793 if (hci_stack->acl_fragmentation_total_size > 0u) { 5794 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5795 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5796 if (connection) { 5797 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5798 hci_send_acl_packet_fragments(connection); 5799 return true; 5800 } 5801 } else { 5802 // connection gone -> discard further fragments 5803 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5804 hci_stack->acl_fragmentation_total_size = 0; 5805 hci_stack->acl_fragmentation_pos = 0; 5806 } 5807 } 5808 return false; 5809 } 5810 5811 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5812 static bool hci_run_iso_fragments(void){ 5813 if (hci_stack->iso_fragmentation_total_size > 0u) { 5814 // TODO: flow control 5815 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5816 hci_send_iso_packet_fragments(); 5817 return true; 5818 } 5819 } 5820 return false; 5821 } 5822 #endif 5823 5824 #ifdef ENABLE_CLASSIC 5825 5826 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5827 static bool hci_classic_operation_active(void) { 5828 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5829 return true; 5830 } 5831 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5832 return true; 5833 } 5834 btstack_linked_item_t * it; 5835 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5836 hci_connection_t *connection = (hci_connection_t *) it; 5837 switch (connection->state) { 5838 case SENT_CREATE_CONNECTION: 5839 case SENT_CANCEL_CONNECTION: 5840 case SENT_DISCONNECT: 5841 return true; 5842 default: 5843 break; 5844 } 5845 } 5846 return false; 5847 } 5848 #endif 5849 5850 static bool hci_run_general_gap_classic(void){ 5851 5852 // assert stack is working and classic is active 5853 if (hci_classic_supported() == false) return false; 5854 if (hci_stack->state != HCI_STATE_WORKING) return false; 5855 5856 // decline incoming connections 5857 if (hci_stack->decline_reason){ 5858 uint8_t reason = hci_stack->decline_reason; 5859 hci_stack->decline_reason = 0; 5860 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5861 return true; 5862 } 5863 5864 if (hci_stack->gap_tasks_classic != 0){ 5865 hci_run_gap_tasks_classic(); 5866 return true; 5867 } 5868 5869 // start/stop inquiry 5870 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5871 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5872 if (hci_classic_operation_active() == false) 5873 #endif 5874 { 5875 uint8_t duration = hci_stack->inquiry_state; 5876 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5877 if (hci_stack->inquiry_max_period_length != 0){ 5878 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); 5879 } else { 5880 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5881 } 5882 return true; 5883 } 5884 } 5885 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5886 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5887 hci_send_cmd(&hci_inquiry_cancel); 5888 return true; 5889 } 5890 5891 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5892 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5893 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5894 return true; 5895 } 5896 5897 // remote name request 5898 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5899 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5900 if (hci_classic_operation_active() == false) 5901 #endif 5902 { 5903 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5904 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5905 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5906 return true; 5907 } 5908 } 5909 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5910 // Local OOB data 5911 if (hci_stack->classic_read_local_oob_data){ 5912 hci_stack->classic_read_local_oob_data = false; 5913 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5914 hci_send_cmd(&hci_read_local_extended_oob_data); 5915 } else { 5916 hci_send_cmd(&hci_read_local_oob_data); 5917 } 5918 } 5919 #endif 5920 // pairing 5921 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5922 uint8_t state = hci_stack->gap_pairing_state; 5923 uint8_t pin_code[PIN_CODE_LEN]; 5924 switch (state){ 5925 case GAP_PAIRING_STATE_SEND_PIN: 5926 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5927 memset(pin_code, 0, 16); 5928 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5929 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5930 break; 5931 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5932 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5933 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5934 break; 5935 case GAP_PAIRING_STATE_SEND_PASSKEY: 5936 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5937 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5938 break; 5939 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5940 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5941 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5942 break; 5943 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5944 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5945 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5946 break; 5947 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5948 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5949 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5950 break; 5951 default: 5952 break; 5953 } 5954 return true; 5955 } 5956 return false; 5957 } 5958 #endif 5959 5960 #ifdef ENABLE_BLE 5961 5962 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5963 static uint8_t hci_le_num_phys(uint8_t phys){ 5964 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5965 btstack_assert(phys); 5966 return num_bits_set[phys]; 5967 } 5968 #endif 5969 5970 #ifdef ENABLE_LE_CENTRAL 5971 static void hci_le_scan_stop(void){ 5972 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5973 if (hci_le_extended_advertising_supported()) { 5974 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5975 } else 5976 #endif 5977 { 5978 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5979 } 5980 } 5981 5982 static void 5983 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5984 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5985 if (hci_le_extended_advertising_supported()) { 5986 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5987 uint16_t le_connection_scan_interval[3]; 5988 uint16_t le_connection_scan_window[3]; 5989 uint16_t le_connection_interval_min[3]; 5990 uint16_t le_connection_interval_max[3]; 5991 uint16_t le_connection_latency[3]; 5992 uint16_t le_supervision_timeout[3]; 5993 uint16_t le_minimum_ce_length[3]; 5994 uint16_t le_maximum_ce_length[3]; 5995 5996 uint8_t i; 5997 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5998 for (i=0;i<num_phys;i++){ 5999 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 6000 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6001 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6002 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6003 le_connection_latency[i] = hci_stack->le_connection_latency; 6004 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6005 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6006 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6007 } 6008 hci_send_cmd(&hci_le_extended_create_connection, 6009 initiator_filter_policy, 6010 hci_stack->le_connection_own_addr_type, // our addr type: 6011 address_type, // peer address type 6012 address, // peer bd addr 6013 hci_stack->le_connection_phys, // initiating PHY 6014 le_connection_scan_interval, // conn scan interval 6015 le_connection_scan_window, // conn scan windows 6016 le_connection_interval_min, // conn interval min 6017 le_connection_interval_max, // conn interval max 6018 le_connection_latency, // conn latency 6019 le_supervision_timeout, // conn latency 6020 le_minimum_ce_length, // min ce length 6021 le_maximum_ce_length // max ce length 6022 ); 6023 } else 6024 #endif 6025 { 6026 hci_send_cmd(&hci_le_create_connection, 6027 hci_stack->le_connection_scan_interval, // conn scan interval 6028 hci_stack->le_connection_scan_window, // conn scan windows 6029 initiator_filter_policy, // don't use whitelist 6030 address_type, // peer address type 6031 address, // peer bd addr 6032 hci_stack->le_connection_own_addr_type, // our addr type: 6033 hci_stack->le_connection_interval_min, // conn interval min 6034 hci_stack->le_connection_interval_max, // conn interval max 6035 hci_stack->le_connection_latency, // conn latency 6036 hci_stack->le_supervision_timeout, // conn latency 6037 hci_stack->le_minimum_ce_length, // min ce length 6038 hci_stack->le_maximum_ce_length // max ce length 6039 ); 6040 } 6041 } 6042 #endif 6043 6044 #ifdef ENABLE_LE_PERIPHERAL 6045 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6046 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6047 uint8_t operation = 0; 6048 if (pos == 0){ 6049 // first fragment or complete data 6050 operation |= 1; 6051 } 6052 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6053 // last fragment or complete data 6054 operation |= 2; 6055 } 6056 return operation; 6057 } 6058 #endif 6059 #endif 6060 6061 static bool hci_run_general_gap_le(void){ 6062 6063 btstack_linked_list_iterator_t lit; 6064 6065 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6066 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6067 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6068 hci_stack->le_resolvable_private_address_update_s = 0; 6069 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6070 return true; 6071 } 6072 #endif 6073 6074 // Phase 1: collect what to stop 6075 6076 #ifdef ENABLE_LE_CENTRAL 6077 bool scanning_stop = false; 6078 bool connecting_stop = false; 6079 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6080 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6081 bool periodic_sync_stop = false; 6082 #endif 6083 #endif 6084 #endif 6085 6086 #ifdef ENABLE_LE_PERIPHERAL 6087 bool advertising_stop = false; 6088 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6089 le_advertising_set_t * advertising_stop_set = NULL; 6090 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6091 bool periodic_advertising_stop = false; 6092 #endif 6093 #endif 6094 #endif 6095 6096 // check if own address changes 6097 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6098 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6099 6100 // check if whitelist needs modification 6101 bool whitelist_modification_pending = false; 6102 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6103 while (btstack_linked_list_iterator_has_next(&lit)){ 6104 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6105 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6106 whitelist_modification_pending = true; 6107 break; 6108 } 6109 } 6110 6111 // check if resolving list needs modification 6112 bool resolving_list_modification_pending = false; 6113 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6114 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6115 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6116 resolving_list_modification_pending = true; 6117 } 6118 #endif 6119 6120 #ifdef ENABLE_LE_CENTRAL 6121 6122 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6123 // check if periodic advertiser list needs modification 6124 bool periodic_list_modification_pending = false; 6125 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6126 while (btstack_linked_list_iterator_has_next(&lit)){ 6127 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6128 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6129 periodic_list_modification_pending = true; 6130 break; 6131 } 6132 } 6133 #endif 6134 6135 // scanning control 6136 if (hci_stack->le_scanning_active) { 6137 // stop if: 6138 // - parameter change required 6139 // - it's disabled 6140 // - whitelist change required but used for scanning 6141 // - resolving list modified 6142 // - own address changes 6143 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6144 if ((hci_stack->le_scanning_param_update) || 6145 !hci_stack->le_scanning_enabled || 6146 (scanning_uses_whitelist && whitelist_modification_pending) || 6147 resolving_list_modification_pending || 6148 random_address_change){ 6149 6150 scanning_stop = true; 6151 } 6152 } 6153 6154 // connecting control 6155 bool connecting_with_whitelist; 6156 switch (hci_stack->le_connecting_state){ 6157 case LE_CONNECTING_DIRECT: 6158 case LE_CONNECTING_WHITELIST: 6159 // stop connecting if: 6160 // - connecting uses white and whitelist modification pending 6161 // - if it got disabled 6162 // - resolving list modified 6163 // - own address changes 6164 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6165 if ((connecting_with_whitelist && whitelist_modification_pending) || 6166 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6167 resolving_list_modification_pending || 6168 random_address_change) { 6169 6170 connecting_stop = true; 6171 } 6172 break; 6173 default: 6174 break; 6175 } 6176 6177 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6178 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6179 // periodic sync control 6180 bool sync_with_advertiser_list; 6181 switch(hci_stack->le_periodic_sync_state){ 6182 case LE_CONNECTING_DIRECT: 6183 case LE_CONNECTING_WHITELIST: 6184 // stop sync if: 6185 // - sync with advertiser list and advertiser list modification pending 6186 // - if it got disabled 6187 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6188 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6189 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6190 periodic_sync_stop = true; 6191 } 6192 break; 6193 default: 6194 break; 6195 } 6196 #endif 6197 #endif 6198 6199 #endif /* ENABLE_LE_CENTRAL */ 6200 6201 #ifdef ENABLE_LE_PERIPHERAL 6202 // le advertisement control 6203 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6204 // stop if: 6205 // - parameter change required 6206 // - random address used in advertising and changes 6207 // - it's disabled 6208 // - whitelist change required but used for advertisement filter policy 6209 // - resolving list modified 6210 // - own address changes 6211 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6212 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6213 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6214 if (advertising_change || 6215 (advertising_uses_random_address && random_address_change) || 6216 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6217 (advertising_uses_whitelist && whitelist_modification_pending) || 6218 resolving_list_modification_pending || 6219 random_address_change) { 6220 6221 advertising_stop = true; 6222 } 6223 } 6224 6225 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6226 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6227 btstack_linked_list_iterator_t it; 6228 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6229 while (btstack_linked_list_iterator_has_next(&it)){ 6230 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6231 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6232 // stop if: 6233 // - parameter change required 6234 // - random address used in connectable advertising and changes 6235 // - it's disabled 6236 // - whitelist change required but used for advertisement filter policy 6237 // - resolving list modified 6238 // - own address changes 6239 // - advertisement set will be removed 6240 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6241 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6242 bool advertising_uses_random_address = 6243 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6244 advertising_connectable; 6245 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6246 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6247 bool advertising_set_random_address_change = 6248 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6249 bool advertising_set_will_be_removed = 6250 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6251 if (advertising_parameter_change || 6252 (advertising_uses_random_address && advertising_set_random_address_change) || 6253 (advertising_enabled == false) || 6254 (advertising_uses_whitelist && whitelist_modification_pending) || 6255 resolving_list_modification_pending || 6256 advertising_set_will_be_removed) { 6257 6258 advertising_stop = true; 6259 advertising_stop_set = advertising_set; 6260 break; 6261 } 6262 } 6263 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6264 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6265 // stop if: 6266 // - it's disabled 6267 // - parameter change required 6268 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6269 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6270 if ((periodic_enabled == false) || periodic_parameter_change){ 6271 periodic_advertising_stop = true; 6272 advertising_stop_set = advertising_set; 6273 } 6274 } 6275 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6276 } 6277 } 6278 #endif 6279 6280 #endif 6281 6282 6283 // Phase 2: stop everything that should be off during modifications 6284 6285 6286 // 2.1 Outgoing connection 6287 #ifdef ENABLE_LE_CENTRAL 6288 if (connecting_stop){ 6289 hci_send_cmd(&hci_le_create_connection_cancel); 6290 return true; 6291 } 6292 #endif 6293 6294 // 2.2 Scanning 6295 #ifdef ENABLE_LE_CENTRAL 6296 if (scanning_stop){ 6297 hci_stack->le_scanning_active = false; 6298 hci_le_scan_stop(); 6299 return true; 6300 } 6301 6302 // 2.3 Periodic Sync 6303 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6304 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6305 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6306 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6307 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6308 return true; 6309 } 6310 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6311 if (periodic_sync_stop){ 6312 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6313 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6314 return true; 6315 } 6316 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6317 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6318 #endif /* ENABLE_LE_CENTRAL */ 6319 6320 // 2.4 Advertising: legacy, extended, periodic 6321 #ifdef ENABLE_LE_PERIPHERAL 6322 if (advertising_stop){ 6323 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6324 if (hci_le_extended_advertising_supported()) { 6325 uint8_t advertising_stop_handle; 6326 if (advertising_stop_set != NULL){ 6327 advertising_stop_handle = advertising_stop_set->advertising_handle; 6328 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6329 } else { 6330 advertising_stop_handle = 0; 6331 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6332 } 6333 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6334 const uint16_t durations[] = { 0 }; 6335 const uint16_t max_events[] = { 0 }; 6336 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6337 } else 6338 #endif 6339 { 6340 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6341 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6342 } 6343 return true; 6344 } 6345 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6346 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6347 if (periodic_advertising_stop){ 6348 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6349 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6350 return true; 6351 } 6352 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6353 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6354 #endif /* ENABLE_LE_PERIPHERAL */ 6355 6356 6357 // Phase 3: modify 6358 6359 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6360 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6361 // GAP Privacy, notify clients upon upcoming random address change 6362 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6363 gap_privacy_clients_notify(hci_stack->le_random_address); 6364 } 6365 6366 // - wait until privacy update completed 6367 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6368 return false; 6369 } 6370 6371 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6372 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6373 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6374 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6375 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6376 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6377 #endif 6378 return true; 6379 } 6380 6381 #ifdef ENABLE_LE_CENTRAL 6382 if (hci_stack->le_scanning_param_update){ 6383 hci_stack->le_scanning_param_update = false; 6384 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6385 if (hci_le_extended_advertising_supported()){ 6386 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6387 uint8_t scan_types[2]; 6388 uint16_t scan_intervals[2]; 6389 uint16_t scan_windows[2]; 6390 6391 uint8_t i; 6392 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6393 for (i=0;i<num_phys;i++){ 6394 scan_types[i] = hci_stack->le_scan_type; 6395 scan_intervals[i] = hci_stack->le_scan_interval; 6396 scan_windows[i] = hci_stack->le_scan_window; 6397 } 6398 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6399 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6400 } else 6401 #endif 6402 { 6403 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6404 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6405 } 6406 return true; 6407 } 6408 #endif 6409 6410 #ifdef ENABLE_LE_PERIPHERAL 6411 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6412 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6413 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6414 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6415 if (hci_le_extended_advertising_supported()){ 6416 // map advertisment type to advertising event properties 6417 uint16_t adv_event_properties = 0; 6418 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6419 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6420 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6421 } 6422 hci_stack->le_advertising_set_in_current_command = 0; 6423 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6424 0, 6425 adv_event_properties, 6426 hci_stack->le_advertisements_interval_min, 6427 hci_stack->le_advertisements_interval_max, 6428 hci_stack->le_advertisements_channel_map, 6429 hci_stack->le_advertisements_own_addr_type, 6430 hci_stack->le_advertisements_direct_address_type, 6431 hci_stack->le_advertisements_direct_address, 6432 hci_stack->le_advertisements_filter_policy, 6433 0x7f, // tx power: no preference 6434 0x01, // primary adv phy: LE 1M 6435 0, // secondary adv max skip 6436 0x01, // secondary adv phy 6437 0, // adv sid 6438 0 // scan request notification 6439 ); 6440 } else 6441 #endif 6442 { 6443 hci_send_cmd(&hci_le_set_advertising_parameters, 6444 hci_stack->le_advertisements_interval_min, 6445 hci_stack->le_advertisements_interval_max, 6446 hci_stack->le_advertisements_type, 6447 hci_stack->le_advertisements_own_addr_type, 6448 hci_stack->le_advertisements_direct_address_type, 6449 hci_stack->le_advertisements_direct_address, 6450 hci_stack->le_advertisements_channel_map, 6451 hci_stack->le_advertisements_filter_policy); 6452 } 6453 return true; 6454 } 6455 6456 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6457 // assumption: only set if extended advertising is supported 6458 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6459 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6460 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6461 return true; 6462 } 6463 #endif 6464 6465 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6466 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6467 uint8_t adv_data_clean[31]; 6468 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6469 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6470 hci_stack->le_advertisements_data_len); 6471 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6472 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6473 if (hci_le_extended_advertising_supported()){ 6474 hci_stack->le_advertising_set_in_current_command = 0; 6475 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6476 } else 6477 #endif 6478 { 6479 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6480 } 6481 return true; 6482 } 6483 6484 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6485 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6486 uint8_t scan_data_clean[31]; 6487 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6488 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6489 hci_stack->le_scan_response_data_len); 6490 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6491 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6492 if (hci_le_extended_advertising_supported()){ 6493 hci_stack->le_advertising_set_in_current_command = 0; 6494 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6495 } else 6496 #endif 6497 { 6498 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6499 } 6500 return true; 6501 } 6502 6503 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6504 if (hci_le_extended_advertising_supported()) { 6505 btstack_linked_list_iterator_t it; 6506 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6507 while (btstack_linked_list_iterator_has_next(&it)){ 6508 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6509 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6510 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6511 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6512 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6513 return true; 6514 } 6515 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6516 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6517 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6518 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6519 advertising_set->advertising_handle, 6520 advertising_set->extended_params.advertising_event_properties, 6521 advertising_set->extended_params.primary_advertising_interval_min, 6522 advertising_set->extended_params.primary_advertising_interval_max, 6523 advertising_set->extended_params.primary_advertising_channel_map, 6524 advertising_set->extended_params.own_address_type, 6525 advertising_set->extended_params.peer_address_type, 6526 advertising_set->extended_params.peer_address, 6527 advertising_set->extended_params.advertising_filter_policy, 6528 advertising_set->extended_params.advertising_tx_power, 6529 advertising_set->extended_params.primary_advertising_phy, 6530 advertising_set->extended_params.secondary_advertising_max_skip, 6531 advertising_set->extended_params.secondary_advertising_phy, 6532 advertising_set->extended_params.advertising_sid, 6533 advertising_set->extended_params.scan_request_notification_enable 6534 ); 6535 return true; 6536 } 6537 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6538 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6539 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6540 return true; 6541 } 6542 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6543 uint16_t pos = advertising_set->adv_data_pos; 6544 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6545 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6546 if ((operation & 0x02) != 0){ 6547 // last fragment or complete data 6548 operation |= 2; 6549 advertising_set->adv_data_pos = 0; 6550 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6551 } else { 6552 advertising_set->adv_data_pos += data_to_upload; 6553 } 6554 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6555 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6556 return true; 6557 } 6558 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6559 uint16_t pos = advertising_set->scan_data_pos; 6560 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6561 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6562 if ((operation & 0x02) != 0){ 6563 advertising_set->scan_data_pos = 0; 6564 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6565 } else { 6566 advertising_set->scan_data_pos += data_to_upload; 6567 } 6568 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6569 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6570 return true; 6571 } 6572 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6573 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6574 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6575 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6576 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6577 advertising_set->advertising_handle, 6578 advertising_set->periodic_params.periodic_advertising_interval_min, 6579 advertising_set->periodic_params.periodic_advertising_interval_max, 6580 advertising_set->periodic_params.periodic_advertising_properties); 6581 return true; 6582 } 6583 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6584 uint16_t pos = advertising_set->periodic_data_pos; 6585 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6586 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6587 if ((operation & 0x02) != 0){ 6588 // last fragment or complete data 6589 operation |= 2; 6590 advertising_set->periodic_data_pos = 0; 6591 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6592 } else { 6593 advertising_set->periodic_data_pos += data_to_upload; 6594 } 6595 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6596 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6597 return true; 6598 } 6599 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6600 } 6601 } 6602 #endif 6603 6604 #endif 6605 6606 #ifdef ENABLE_LE_CENTRAL 6607 // if connect with whitelist was active and is not cancelled yet, wait until next time 6608 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6609 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6610 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6611 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6612 #endif 6613 #endif 6614 6615 // LE Whitelist Management 6616 if (whitelist_modification_pending){ 6617 // add/remove entries 6618 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6619 while (btstack_linked_list_iterator_has_next(&lit)){ 6620 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6621 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6622 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6623 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6624 bd_addr_type_t address_type = entry->address_type; 6625 bd_addr_t address; 6626 memcpy(address, entry->address, 6); 6627 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6628 // remove from whitelist if not scheduled for re-addition 6629 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6630 btstack_memory_whitelist_entry_free(entry); 6631 } 6632 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6633 return true; 6634 } 6635 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6636 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6637 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6638 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6639 return true; 6640 } 6641 } 6642 } 6643 6644 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6645 // LE Resolving List Management 6646 if (resolving_list_modification_pending) { 6647 uint16_t i; 6648 uint8_t null_16[16]; 6649 uint8_t local_irk_flipped[16]; 6650 const uint8_t *local_irk; 6651 switch (hci_stack->le_resolving_list_state) { 6652 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6653 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6654 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6655 return true; 6656 case LE_RESOLVING_LIST_READ_SIZE: 6657 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6658 hci_send_cmd(&hci_le_read_resolving_list_size); 6659 return true; 6660 case LE_RESOLVING_LIST_SEND_CLEAR: 6661 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6662 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6663 sizeof(hci_stack->le_resolving_list_add_entries)); 6664 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6665 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6666 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6667 sizeof(hci_stack->le_resolving_list_remove_entries)); 6668 hci_send_cmd(&hci_le_clear_resolving_list); 6669 return true; 6670 case LE_RESOLVING_LIST_SET_IRK: 6671 // set IRK used by RPA for undirected advertising 6672 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6673 local_irk = gap_get_persistent_irk(); 6674 reverse_128(local_irk, local_irk_flipped); 6675 memset(null_16, 0, sizeof(null_16)); 6676 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6677 null_16, local_irk_flipped); 6678 return true; 6679 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6680 // first remove old entries 6681 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6682 uint8_t offset = i >> 3; 6683 uint8_t mask = 1 << (i & 7); 6684 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6685 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6686 bd_addr_t peer_identity_addreses; 6687 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6688 sm_key_t peer_irk; 6689 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6690 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6691 6692 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6693 // trigger whitelist entry 'update' (work around for controller bug) 6694 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6695 while (btstack_linked_list_iterator_has_next(&lit)) { 6696 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6697 if (entry->address_type != peer_identity_addr_type) continue; 6698 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6699 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6700 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6701 } 6702 #endif 6703 6704 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6705 peer_identity_addreses); 6706 return true; 6707 } 6708 6709 // then add new entries 6710 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6711 uint8_t offset = i >> 3; 6712 uint8_t mask = 1 << (i & 7); 6713 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6714 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6715 bd_addr_t peer_identity_addreses; 6716 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6717 sm_key_t peer_irk; 6718 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6719 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6720 if (btstack_is_null(peer_irk, 16)) continue; 6721 local_irk = gap_get_persistent_irk(); 6722 // command uses format specifier 'P' that stores 16-byte value without flip 6723 uint8_t peer_irk_flipped[16]; 6724 reverse_128(local_irk, local_irk_flipped); 6725 reverse_128(peer_irk, peer_irk_flipped); 6726 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6727 peer_irk_flipped, local_irk_flipped); 6728 return true; 6729 } 6730 6731 // finally, set privacy mode 6732 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6733 uint8_t offset = i >> 3; 6734 uint8_t mask = 1 << (i & 7); 6735 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6736 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6737 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6738 // Network Privacy Mode is default 6739 continue; 6740 } 6741 bd_addr_t peer_identity_address; 6742 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6743 sm_key_t peer_irk; 6744 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6745 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6746 if (btstack_is_null(peer_irk, 16)) continue; 6747 // command uses format specifier 'P' that stores 16-byte value without flip 6748 uint8_t peer_irk_flipped[16]; 6749 reverse_128(peer_irk, peer_irk_flipped); 6750 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6751 return true; 6752 } 6753 break; 6754 6755 default: 6756 break; 6757 } 6758 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6759 } 6760 #endif 6761 6762 #ifdef ENABLE_LE_CENTRAL 6763 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6764 // LE Whitelist Management 6765 if (periodic_list_modification_pending){ 6766 // add/remove entries 6767 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6768 while (btstack_linked_list_iterator_has_next(&lit)){ 6769 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6770 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6771 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6772 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6773 return true; 6774 } 6775 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6776 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6777 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6778 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6779 return true; 6780 } 6781 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6782 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6783 btstack_memory_periodic_advertiser_list_entry_free(entry); 6784 } 6785 } 6786 } 6787 #endif 6788 #endif 6789 6790 #ifdef ENABLE_LE_CENTRAL 6791 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6792 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6793 if (hci_stack->le_past_set_default_params){ 6794 hci_stack->le_past_set_default_params = false; 6795 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6796 hci_stack->le_past_mode, 6797 hci_stack->le_past_skip, 6798 hci_stack->le_past_sync_timeout, 6799 hci_stack->le_past_cte_type); 6800 return true; 6801 } 6802 #endif 6803 #endif 6804 #endif 6805 6806 // post-pone all actions until stack is fully working 6807 if (hci_stack->state != HCI_STATE_WORKING) return false; 6808 6809 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6810 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6811 6812 // Phase 4: restore state 6813 6814 #ifdef ENABLE_LE_CENTRAL 6815 // re-start scanning 6816 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6817 hci_stack->le_scanning_active = true; 6818 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6819 if (hci_le_extended_advertising_supported()){ 6820 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6821 } else 6822 #endif 6823 { 6824 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6825 } 6826 return true; 6827 } 6828 #endif 6829 6830 #ifdef ENABLE_LE_CENTRAL 6831 // re-start connecting 6832 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6833 bd_addr_t null_addr; 6834 memset(null_addr, 0, 6); 6835 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6836 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6837 hci_send_le_create_connection(1, 0, null_addr); 6838 return true; 6839 } 6840 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6841 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6842 switch(hci_stack->le_periodic_sync_request){ 6843 case LE_CONNECTING_DIRECT: 6844 case LE_CONNECTING_WHITELIST: 6845 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6846 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6847 hci_stack->le_periodic_sync_options, 6848 hci_stack->le_periodic_sync_advertising_sid, 6849 hci_stack->le_periodic_sync_advertiser_address_type, 6850 hci_stack->le_periodic_sync_advertiser_address, 6851 hci_stack->le_periodic_sync_skip, 6852 hci_stack->le_periodic_sync_timeout, 6853 hci_stack->le_periodic_sync_cte_type); 6854 return true; 6855 default: 6856 break; 6857 } 6858 } 6859 #endif 6860 #endif 6861 6862 #ifdef ENABLE_LE_PERIPHERAL 6863 // re-start advertising 6864 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6865 // check if advertisements should be enabled given 6866 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6867 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6868 6869 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6870 if (hci_le_extended_advertising_supported()){ 6871 const uint8_t advertising_handles[] = { 0 }; 6872 const uint16_t durations[] = { 0 }; 6873 const uint16_t max_events[] = { 0 }; 6874 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6875 } else 6876 #endif 6877 { 6878 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6879 } 6880 return true; 6881 } 6882 6883 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6884 if (hci_le_extended_advertising_supported()) { 6885 btstack_linked_list_iterator_t it; 6886 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6887 while (btstack_linked_list_iterator_has_next(&it)) { 6888 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6889 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6890 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6891 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6892 const uint16_t durations[] = { advertising_set->enable_timeout }; 6893 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6894 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6895 return true; 6896 } 6897 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6898 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6899 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6900 uint8_t enable = 1; 6901 if (advertising_set->periodic_include_adi){ 6902 enable |= 2; 6903 } 6904 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6905 return true; 6906 } 6907 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6908 } 6909 } 6910 #endif 6911 #endif 6912 6913 return false; 6914 } 6915 6916 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6917 static bool hci_run_iso_tasks(void){ 6918 btstack_linked_list_iterator_t it; 6919 6920 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6921 return false; 6922 } 6923 6924 // BIG 6925 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6926 while (btstack_linked_list_iterator_has_next(&it)){ 6927 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6928 switch (big->state){ 6929 case LE_AUDIO_BIG_STATE_CREATE: 6930 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6931 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6932 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6933 hci_send_cmd(&hci_le_create_big, 6934 big->params->big_handle, 6935 big->params->advertising_handle, 6936 big->params->num_bis, 6937 big->params->sdu_interval_us, 6938 big->params->max_sdu, 6939 big->params->max_transport_latency_ms, 6940 big->params->rtn, 6941 big->params->phy, 6942 big->params->packing, 6943 big->params->framing, 6944 big->params->encryption, 6945 big->params->broadcast_code); 6946 return true; 6947 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6948 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6949 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); 6950 return true; 6951 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6952 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6953 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6954 return true; 6955 case LE_AUDIO_BIG_STATE_TERMINATE: 6956 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6957 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6958 return true; 6959 default: 6960 break; 6961 } 6962 } 6963 6964 // BIG Sync 6965 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6966 while (btstack_linked_list_iterator_has_next(&it)){ 6967 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6968 switch (big_sync->state){ 6969 case LE_AUDIO_BIG_STATE_CREATE: 6970 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6971 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6972 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6973 hci_send_cmd(&hci_le_big_create_sync, 6974 big_sync->params->big_handle, 6975 big_sync->params->sync_handle, 6976 big_sync->params->encryption, 6977 big_sync->params->broadcast_code, 6978 big_sync->params->mse, 6979 big_sync->params->big_sync_timeout_10ms, 6980 big_sync->params->num_bis, 6981 big_sync->params->bis_indices); 6982 return true; 6983 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6984 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6985 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); 6986 return true; 6987 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6988 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6989 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6990 return true; 6991 case LE_AUDIO_BIG_STATE_TERMINATE: 6992 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6993 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6994 return true; 6995 default: 6996 break; 6997 } 6998 } 6999 7000 // CIG 7001 bool cig_active; 7002 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7003 while (btstack_linked_list_iterator_has_next(&it)) { 7004 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7005 uint8_t i; 7006 // Set CIG Parameters 7007 uint8_t cis_id[MAX_NR_CIS]; 7008 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7009 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7010 uint8_t phy_c_to_p[MAX_NR_CIS]; 7011 uint8_t phy_p_to_c[MAX_NR_CIS]; 7012 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7013 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7014 switch (cig->state) { 7015 case LE_AUDIO_CIG_STATE_CREATE: 7016 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7017 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7018 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7019 le_audio_cig_params_t * params = cig->params; 7020 for (i = 0; i < params->num_cis; i++) { 7021 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7022 cis_id[i] = cis_params->cis_id; 7023 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7024 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7025 phy_c_to_p[i] = cis_params->phy_c_to_p; 7026 phy_p_to_c[i] = cis_params->phy_p_to_c; 7027 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7028 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7029 } 7030 hci_send_cmd(&hci_le_set_cig_parameters, 7031 cig->cig_id, 7032 params->sdu_interval_c_to_p, 7033 params->sdu_interval_p_to_c, 7034 params->worst_case_sca, 7035 params->packing, 7036 params->framing, 7037 params->max_transport_latency_c_to_p, 7038 params->max_transport_latency_p_to_c, 7039 params->num_cis, 7040 cis_id, 7041 max_sdu_c_to_p, 7042 max_sdu_p_to_c, 7043 phy_c_to_p, 7044 phy_p_to_c, 7045 rtn_c_to_p, 7046 rtn_p_to_c 7047 ); 7048 return true; 7049 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7050 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7051 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7052 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7053 for (i=0;i<cig->num_cis;i++){ 7054 cig->cis_setup_active[i] = true; 7055 } 7056 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7057 return true; 7058 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7059 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7060 // find next path to setup 7061 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7062 if (cig->cis_established[cis_index] == false) { 7063 continue; 7064 } 7065 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7066 bool setup = true; 7067 if (cis_direction == 0){ 7068 // 0 - input - host to controller 7069 // we are central => central to peripheral 7070 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7071 } else { 7072 // 1 - output - controller to host 7073 // we are central => peripheral to central 7074 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7075 } 7076 if (setup){ 7077 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7078 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7079 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7080 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); 7081 return true; 7082 } 7083 cig->state_vars.next_cis++; 7084 } 7085 // emit done 7086 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7087 break; 7088 case LE_AUDIO_CIG_STATE_REMOVE: 7089 // check if CIG Active 7090 cig_active = false; 7091 for (i = 0; i < cig->num_cis; i++) { 7092 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7093 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7094 if (stream != NULL){ 7095 cig_active = true; 7096 break; 7097 } 7098 } 7099 } 7100 if (cig_active == false){ 7101 btstack_linked_list_iterator_remove(&it); 7102 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7103 return true; 7104 } 7105 default: 7106 break; 7107 } 7108 } 7109 7110 // CIS Accept/Reject/Setup ISO Path/Close 7111 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7112 while (btstack_linked_list_iterator_has_next(&it)) { 7113 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7114 hci_con_handle_t con_handle; 7115 switch (iso_stream->state){ 7116 case HCI_ISO_STREAM_W2_ACCEPT: 7117 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7118 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7119 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7120 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7121 return true; 7122 case HCI_ISO_STREAM_W2_REJECT: 7123 con_handle = iso_stream->cis_handle; 7124 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7125 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7126 hci_iso_stream_finalize(iso_stream); 7127 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7128 return true; 7129 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7130 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7131 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7132 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7133 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); 7134 break; 7135 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7136 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7137 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7138 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7139 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); 7140 break; 7141 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7142 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7143 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle); 7144 break; 7145 default: 7146 break; 7147 } 7148 } 7149 7150 return false; 7151 } 7152 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7153 #endif 7154 7155 static bool hci_run_general_pending_commands(void){ 7156 btstack_linked_item_t * it; 7157 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7158 hci_connection_t * connection = (hci_connection_t *) it; 7159 7160 switch(connection->state){ 7161 case SEND_CREATE_CONNECTION: 7162 switch(connection->address_type){ 7163 #ifdef ENABLE_CLASSIC 7164 case BD_ADDR_TYPE_ACL: 7165 log_info("sending hci_create_connection"); 7166 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7167 break; 7168 #endif 7169 default: 7170 #ifdef ENABLE_BLE 7171 #ifdef ENABLE_LE_CENTRAL 7172 log_info("sending hci_le_create_connection"); 7173 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7174 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7175 hci_send_le_create_connection(0, connection->address_type, connection->address); 7176 connection->state = SENT_CREATE_CONNECTION; 7177 #endif 7178 #endif 7179 break; 7180 } 7181 return true; 7182 7183 #ifdef ENABLE_CLASSIC 7184 case RECEIVED_CONNECTION_REQUEST: 7185 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7186 log_info("sending hci_accept_connection_request"); 7187 connection->state = ACCEPTED_CONNECTION_REQUEST; 7188 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7189 return true; 7190 } 7191 break; 7192 #endif 7193 case SEND_DISCONNECT: 7194 connection->state = SENT_DISCONNECT; 7195 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7196 return true; 7197 7198 default: 7199 break; 7200 } 7201 7202 // no further commands if connection is about to get shut down 7203 if (connection->state == SENT_DISCONNECT) continue; 7204 7205 #ifdef ENABLE_CLASSIC 7206 7207 // Handling link key request requires remote supported features 7208 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7209 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7210 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7211 7212 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7213 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7214 if (have_link_key && security_level_sufficient){ 7215 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7216 } else { 7217 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7218 } 7219 return true; 7220 } 7221 7222 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7223 log_info("denying to pin request"); 7224 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7225 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7226 return true; 7227 } 7228 7229 // security assessment requires remote features 7230 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7231 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7232 hci_ssp_assess_security_on_io_cap_request(connection); 7233 // 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 7234 } 7235 7236 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7237 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7238 // set authentication requirements: 7239 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7240 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7241 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7242 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7243 authreq |= 1; 7244 } 7245 bool bonding = hci_stack->bondable; 7246 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7247 // if we have received IO Cap Response, we're in responder role 7248 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7249 if (bonding && !remote_bonding){ 7250 log_info("Remote not bonding, dropping local flag"); 7251 bonding = false; 7252 } 7253 } 7254 if (bonding){ 7255 if (connection->bonding_flags & BONDING_DEDICATED){ 7256 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7257 } else { 7258 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7259 } 7260 } 7261 uint8_t have_oob_data = 0; 7262 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7263 if (connection->classic_oob_c_192 != NULL){ 7264 have_oob_data |= 1; 7265 } 7266 if (connection->classic_oob_c_256 != NULL){ 7267 have_oob_data |= 2; 7268 } 7269 #endif 7270 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7271 return true; 7272 } 7273 7274 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7275 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7276 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7277 return true; 7278 } 7279 7280 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7281 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7282 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7283 const uint8_t zero[16] = { 0 }; 7284 const uint8_t * r_192 = zero; 7285 const uint8_t * c_192 = zero; 7286 const uint8_t * r_256 = zero; 7287 const uint8_t * c_256 = zero; 7288 // verify P-256 OOB 7289 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7290 c_256 = connection->classic_oob_c_256; 7291 if (connection->classic_oob_r_256 != NULL) { 7292 r_256 = connection->classic_oob_r_256; 7293 } 7294 } 7295 // verify P-192 OOB 7296 if ((connection->classic_oob_c_192 != NULL)) { 7297 c_192 = connection->classic_oob_c_192; 7298 if (connection->classic_oob_r_192 != NULL) { 7299 r_192 = connection->classic_oob_r_192; 7300 } 7301 } 7302 7303 // assess security 7304 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7305 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7306 if (need_level_4 && !can_reach_level_4){ 7307 log_info("Level 4 required, but not possible -> abort"); 7308 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7309 // send oob negative reply 7310 c_256 = NULL; 7311 c_192 = NULL; 7312 } 7313 7314 // Reply 7315 if (c_256 != zero) { 7316 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7317 } else if (c_192 != zero){ 7318 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7319 } else { 7320 hci_stack->classic_oob_con_handle = connection->con_handle; 7321 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7322 } 7323 return true; 7324 } 7325 #endif 7326 7327 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7328 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7329 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7330 return true; 7331 } 7332 7333 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7334 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7335 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7336 return true; 7337 } 7338 7339 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7340 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7341 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7342 return true; 7343 } 7344 7345 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7346 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7347 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7348 connection->state = SENT_DISCONNECT; 7349 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7350 return true; 7351 } 7352 7353 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7354 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7355 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7356 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7357 return true; 7358 } 7359 7360 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7361 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7362 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7363 return true; 7364 } 7365 7366 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7367 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7368 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7369 return true; 7370 } 7371 7372 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7373 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7374 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7375 return true; 7376 } 7377 7378 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7379 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7380 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7381 return true; 7382 } 7383 7384 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7385 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7386 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7387 return true; 7388 } 7389 #endif 7390 7391 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7392 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7393 #ifdef ENABLE_CLASSIC 7394 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7395 #endif 7396 if (connection->state != SENT_DISCONNECT){ 7397 connection->state = SENT_DISCONNECT; 7398 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7399 return true; 7400 } 7401 } 7402 7403 #ifdef ENABLE_CLASSIC 7404 uint16_t sniff_min_interval; 7405 switch (connection->sniff_min_interval){ 7406 case 0: 7407 break; 7408 case 0xffff: 7409 connection->sniff_min_interval = 0; 7410 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7411 return true; 7412 default: 7413 sniff_min_interval = connection->sniff_min_interval; 7414 connection->sniff_min_interval = 0; 7415 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7416 return true; 7417 } 7418 7419 if (connection->sniff_subrating_max_latency != 0xffff){ 7420 uint16_t max_latency = connection->sniff_subrating_max_latency; 7421 connection->sniff_subrating_max_latency = 0; 7422 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7423 return true; 7424 } 7425 7426 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7427 uint8_t service_type = (uint8_t) connection->qos_service_type; 7428 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7429 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); 7430 return true; 7431 } 7432 7433 if (connection->request_role != HCI_ROLE_INVALID){ 7434 hci_role_t role = connection->request_role; 7435 connection->request_role = HCI_ROLE_INVALID; 7436 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7437 return true; 7438 } 7439 #endif 7440 7441 if (connection->gap_connection_tasks != 0){ 7442 #ifdef ENABLE_CLASSIC 7443 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7444 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7445 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7446 return true; 7447 } 7448 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7449 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7450 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7451 return true; 7452 } 7453 #endif 7454 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7455 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7456 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7457 return true; 7458 } 7459 #ifdef ENABLE_BLE 7460 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7461 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7462 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7463 return true; 7464 } 7465 #endif 7466 } 7467 7468 #ifdef ENABLE_BLE 7469 switch (connection->le_con_parameter_update_state){ 7470 // response to L2CAP CON PARAMETER UPDATE REQUEST 7471 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7472 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7473 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7474 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7475 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7476 return true; 7477 case CON_PARAMETER_UPDATE_REPLY: 7478 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7479 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7480 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7481 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7482 return true; 7483 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7484 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7485 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7486 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7487 return true; 7488 default: 7489 break; 7490 } 7491 if (connection->le_phy_update_all_phys != 0xffu){ 7492 uint8_t all_phys = connection->le_phy_update_all_phys; 7493 connection->le_phy_update_all_phys = 0xff; 7494 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); 7495 return true; 7496 } 7497 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7498 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7499 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7500 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7501 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7502 return true; 7503 } 7504 if (connection->le_past_advertising_handle != 0xff){ 7505 uint8_t advertising_handle = connection->le_past_advertising_handle; 7506 connection->le_past_advertising_handle = 0xff; 7507 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7508 return true; 7509 } 7510 #endif 7511 #endif 7512 } 7513 return false; 7514 } 7515 7516 static void hci_run(void){ 7517 7518 // stack state sub statemachines 7519 switch (hci_stack->state) { 7520 case HCI_STATE_INITIALIZING: 7521 hci_initializing_run(); 7522 break; 7523 case HCI_STATE_HALTING: 7524 hci_halting_run(); 7525 break; 7526 case HCI_STATE_FALLING_ASLEEP: 7527 hci_falling_asleep_run(); 7528 break; 7529 default: 7530 break; 7531 } 7532 7533 // allow to run after initialization to working transition 7534 if (hci_stack->state != HCI_STATE_WORKING){ 7535 return; 7536 } 7537 7538 bool done; 7539 7540 // send continuation fragments first, as they block the prepared packet buffer 7541 done = hci_run_acl_fragments(); 7542 if (done) return; 7543 7544 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7545 done = hci_run_iso_fragments(); 7546 if (done) return; 7547 #endif 7548 7549 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7550 // send host num completed packets next as they don't require num_cmd_packets > 0 7551 if (!hci_can_send_comand_packet_transport()) return; 7552 if (hci_stack->host_completed_packets){ 7553 hci_host_num_completed_packets(); 7554 return; 7555 } 7556 #endif 7557 7558 if (!hci_can_send_command_packet_now()) return; 7559 7560 // global/non-connection oriented commands 7561 7562 7563 #ifdef ENABLE_CLASSIC 7564 // general gap classic 7565 done = hci_run_general_gap_classic(); 7566 if (done) return; 7567 #endif 7568 7569 #ifdef ENABLE_BLE 7570 // general gap le 7571 done = hci_run_general_gap_le(); 7572 if (done) return; 7573 7574 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7575 // ISO related tasks, e.g. BIG create/terminate/sync 7576 done = hci_run_iso_tasks(); 7577 if (done) return; 7578 #endif 7579 #endif 7580 7581 // send pending HCI commands 7582 hci_run_general_pending_commands(); 7583 } 7584 7585 #ifdef ENABLE_CLASSIC 7586 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7587 // bits 6-9 are 'don't use' 7588 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7589 7590 // restrict packet types to local and remote supported 7591 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7592 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7593 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7594 } 7595 #endif 7596 7597 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7598 // house-keeping 7599 7600 #ifdef ENABLE_CLASSIC 7601 bd_addr_t addr; 7602 hci_connection_t * conn; 7603 #endif 7604 #ifdef ENABLE_LE_CENTRAL 7605 uint8_t initiator_filter_policy; 7606 #endif 7607 7608 uint16_t opcode = little_endian_read_16(packet, 0); 7609 switch (opcode) { 7610 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7611 hci_stack->loopback_mode = packet[3]; 7612 break; 7613 7614 #ifdef ENABLE_CLASSIC 7615 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7616 reverse_bd_addr(&packet[3], addr); 7617 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7618 7619 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7620 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7621 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7622 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7623 } 7624 7625 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7626 if (!conn) { 7627 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7628 if (!conn) { 7629 // notify client that alloc failed 7630 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7631 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7632 } 7633 conn->state = SEND_CREATE_CONNECTION; 7634 } 7635 7636 log_info("conn state %u", conn->state); 7637 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7638 switch (conn->state) { 7639 // if connection active exists 7640 case OPEN: 7641 // and OPEN, emit connection complete command 7642 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7643 // packet not sent to controller 7644 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7645 case RECEIVED_DISCONNECTION_COMPLETE: 7646 // create connection triggered in disconnect complete event, let's do it now 7647 break; 7648 case SEND_CREATE_CONNECTION: 7649 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7650 if (hci_classic_operation_active()){ 7651 return ERROR_CODE_SUCCESS; 7652 } 7653 #endif 7654 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7655 break; 7656 default: 7657 // otherwise, just ignore as it is already in the open process 7658 // packet not sent to controller 7659 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7660 } 7661 conn->state = SENT_CREATE_CONNECTION; 7662 7663 // track outgoing connection 7664 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7665 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7666 break; 7667 7668 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7669 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7670 if (conn == NULL) { 7671 // neither SCO nor ACL connection for con handle 7672 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7673 } else { 7674 uint16_t remote_supported_sco_packets; 7675 switch (conn->address_type){ 7676 case BD_ADDR_TYPE_ACL: 7677 // assert SCO connection does not exit 7678 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7679 return ERROR_CODE_COMMAND_DISALLOWED; 7680 } 7681 // cache remote sco packet types 7682 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7683 7684 // allocate connection struct 7685 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7686 HCI_ROLE_MASTER); 7687 if (!conn) { 7688 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7689 } 7690 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7691 break; 7692 case BD_ADDR_TYPE_SCO: 7693 // update of existing SCO connection 7694 break; 7695 default: 7696 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7697 } 7698 } 7699 7700 // conn refers to hci connection of type sco now 7701 7702 conn->state = SENT_CREATE_CONNECTION; 7703 7704 // track outgoing connection to handle command status with error 7705 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7706 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7707 7708 // setup_synchronous_connection? Voice setting at offset 22 7709 // TODO: compare to current setting if sco connection already active 7710 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7711 7712 // derive sco payload length from packet types 7713 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7714 break; 7715 7716 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7717 // get SCO connection 7718 reverse_bd_addr(&packet[3], addr); 7719 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7720 if (conn == NULL){ 7721 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7722 } 7723 7724 conn->state = ACCEPTED_CONNECTION_REQUEST; 7725 7726 // track outgoing connection to handle command status with error 7727 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7728 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7729 7730 // accept_synchronous_connection? Voice setting at offset 18 7731 // TODO: compare to current setting if sco connection already active 7732 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7733 7734 // derive sco payload length from packet types 7735 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7736 break; 7737 #endif 7738 7739 #ifdef ENABLE_BLE 7740 #ifdef ENABLE_LE_CENTRAL 7741 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7742 // white list used? 7743 initiator_filter_policy = packet[7]; 7744 switch (initiator_filter_policy) { 7745 case 0: 7746 // whitelist not used 7747 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7748 break; 7749 case 1: 7750 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7751 break; 7752 default: 7753 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7754 break; 7755 } 7756 // track outgoing connection 7757 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7758 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7759 break; 7760 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7761 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7762 // white list used? 7763 initiator_filter_policy = packet[3]; 7764 switch (initiator_filter_policy) { 7765 case 0: 7766 // whitelist not used 7767 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7768 break; 7769 case 1: 7770 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7771 break; 7772 default: 7773 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7774 break; 7775 } 7776 // track outgoing connection 7777 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7778 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7779 break; 7780 #endif 7781 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7782 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7783 break; 7784 #endif 7785 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7786 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7787 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7788 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7789 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7790 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7791 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7792 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7793 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7794 case HCI_OPCODE_HCI_LE_READ_PHY: 7795 case HCI_OPCODE_HCI_LE_SET_PHY: 7796 // conection handle is first command parameter 7797 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7798 break; 7799 #endif 7800 #endif /* ENABLE_BLE */ 7801 default: 7802 break; 7803 } 7804 7805 hci_stack->num_cmd_packets--; 7806 7807 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7808 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7809 if (err != 0){ 7810 return ERROR_CODE_HARDWARE_FAILURE; 7811 } 7812 return ERROR_CODE_SUCCESS; 7813 } 7814 7815 // disconnect because of security block 7816 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7817 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7818 if (!connection) return; 7819 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7820 } 7821 7822 7823 // Configure Secure Simple Pairing 7824 7825 #ifdef ENABLE_CLASSIC 7826 7827 // enable will enable SSP during init 7828 void gap_ssp_set_enable(int enable){ 7829 hci_stack->ssp_enable = enable; 7830 } 7831 7832 static int hci_local_ssp_activated(void){ 7833 return gap_ssp_supported() && hci_stack->ssp_enable; 7834 } 7835 7836 // if set, BTstack will respond to io capability request using authentication requirement 7837 void gap_ssp_set_io_capability(int io_capability){ 7838 hci_stack->ssp_io_capability = io_capability; 7839 } 7840 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7841 hci_stack->ssp_authentication_requirement = authentication_requirement; 7842 } 7843 7844 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7845 void gap_ssp_set_auto_accept(int auto_accept){ 7846 hci_stack->ssp_auto_accept = auto_accept; 7847 } 7848 7849 void gap_secure_connections_enable(bool enable){ 7850 hci_stack->secure_connections_enable = enable; 7851 } 7852 bool gap_secure_connections_active(void){ 7853 return hci_stack->secure_connections_active; 7854 } 7855 7856 #endif 7857 7858 // va_list part of hci_send_cmd 7859 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7860 if (!hci_can_send_command_packet_now()){ 7861 log_error("hci_send_cmd called but cannot send packet now"); 7862 return ERROR_CODE_COMMAND_DISALLOWED; 7863 } 7864 7865 // for HCI INITIALIZATION 7866 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7867 hci_stack->last_cmd_opcode = cmd->opcode; 7868 7869 hci_reserve_packet_buffer(); 7870 uint8_t * packet = hci_stack->hci_packet_buffer; 7871 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7872 uint8_t status = hci_send_cmd_packet(packet, size); 7873 7874 // release packet buffer on error or for synchronous transport implementations 7875 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7876 hci_release_packet_buffer(); 7877 hci_emit_transport_packet_sent(); 7878 } 7879 7880 return status; 7881 } 7882 7883 /** 7884 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7885 */ 7886 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7887 va_list argptr; 7888 va_start(argptr, cmd); 7889 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7890 va_end(argptr); 7891 return status; 7892 } 7893 7894 // Create various non-HCI events. 7895 // TODO: generalize, use table similar to hci_create_command 7896 7897 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7898 // dump packet 7899 if (dump) { 7900 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7901 } 7902 7903 // dispatch to all event handlers 7904 btstack_linked_list_iterator_t it; 7905 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7906 while (btstack_linked_list_iterator_has_next(&it)){ 7907 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7908 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7909 } 7910 } 7911 7912 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7913 if (!hci_stack->acl_packet_handler) return; 7914 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7915 } 7916 7917 #ifdef ENABLE_CLASSIC 7918 static void hci_notify_if_sco_can_send_now(void){ 7919 // notify SCO sender if waiting 7920 if (!hci_stack->sco_waiting_for_can_send_now) return; 7921 if (hci_can_send_sco_packet_now()){ 7922 hci_stack->sco_waiting_for_can_send_now = 0; 7923 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7924 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7925 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7926 } 7927 } 7928 7929 // parsing end emitting has been merged to reduce code size 7930 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7931 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7932 7933 uint8_t * eir_data; 7934 ad_context_t context; 7935 const uint8_t * name; 7936 uint8_t name_len; 7937 7938 if (size < 3) return; 7939 7940 int event_type = hci_event_packet_get_type(packet); 7941 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7942 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7943 7944 switch (event_type){ 7945 case HCI_EVENT_INQUIRY_RESULT: 7946 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7947 if (size != (3 + (num_responses * 14))) return; 7948 break; 7949 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7950 if (size != 257) return; 7951 if (num_responses != 1) return; 7952 break; 7953 default: 7954 return; 7955 } 7956 7957 // event[1] is set at the end 7958 int i; 7959 for (i=0; i<num_responses;i++){ 7960 memset(event, 0, sizeof(event)); 7961 event[0] = GAP_EVENT_INQUIRY_RESULT; 7962 uint8_t event_size = 27; // if name is not set by EIR 7963 7964 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7965 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7966 (void)memcpy(&event[9], 7967 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7968 3); // class of device 7969 (void)memcpy(&event[12], 7970 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7971 2); // clock offset 7972 7973 switch (event_type){ 7974 case HCI_EVENT_INQUIRY_RESULT: 7975 // 14,15,16,17 = 0, size 18 7976 break; 7977 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7978 event[14] = 1; 7979 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7980 // 16,17 = 0, size 18 7981 break; 7982 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7983 event[14] = 1; 7984 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7985 // EIR packets only contain a single inquiry response 7986 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7987 name = NULL; 7988 // Iterate over EIR data 7989 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7990 uint8_t data_type = ad_iterator_get_data_type(&context); 7991 uint8_t data_size = ad_iterator_get_data_len(&context); 7992 const uint8_t * data = ad_iterator_get_data(&context); 7993 // Prefer Complete Local Name over Shortened Local Name 7994 switch (data_type){ 7995 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7996 if (name) continue; 7997 /* fall through */ 7998 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7999 name = data; 8000 name_len = data_size; 8001 break; 8002 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8003 if (data_size != 8) break; 8004 event[16] = 1; 8005 memcpy(&event[17], data, 8); 8006 break; 8007 default: 8008 break; 8009 } 8010 } 8011 if (name){ 8012 event[25] = 1; 8013 // truncate name if needed 8014 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8015 event[26] = len; 8016 (void)memcpy(&event[27], name, len); 8017 event_size += len; 8018 } 8019 break; 8020 default: 8021 return; 8022 } 8023 event[1] = event_size - 2; 8024 hci_emit_event(event, event_size, 1); 8025 } 8026 } 8027 #endif 8028 8029 void hci_emit_state(void){ 8030 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8031 uint8_t event[3]; 8032 event[0] = BTSTACK_EVENT_STATE; 8033 event[1] = sizeof(event) - 2u; 8034 event[2] = hci_stack->state; 8035 hci_emit_event(event, sizeof(event), 1); 8036 } 8037 8038 #ifdef ENABLE_CLASSIC 8039 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8040 uint8_t event[13]; 8041 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8042 event[1] = sizeof(event) - 2; 8043 event[2] = status; 8044 little_endian_store_16(event, 3, con_handle); 8045 reverse_bd_addr(address, &event[5]); 8046 event[11] = 1; // ACL connection 8047 event[12] = 0; // encryption disabled 8048 hci_emit_event(event, sizeof(event), 1); 8049 } 8050 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8051 if (disable_l2cap_timeouts) return; 8052 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8053 uint8_t event[4]; 8054 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8055 event[1] = sizeof(event) - 2; 8056 little_endian_store_16(event, 2, conn->con_handle); 8057 hci_emit_event(event, sizeof(event), 1); 8058 } 8059 #endif 8060 8061 #ifdef ENABLE_BLE 8062 #ifdef ENABLE_LE_CENTRAL 8063 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){ 8064 uint8_t hci_event[21]; 8065 hci_event[0] = HCI_EVENT_LE_META; 8066 hci_event[1] = sizeof(hci_event) - 2u; 8067 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8068 hci_event[3] = status; 8069 little_endian_store_16(hci_event, 4, con_handle); 8070 hci_event[6] = 0; // TODO: role 8071 hci_event[7] = address_type; 8072 reverse_bd_addr(address, &hci_event[8]); 8073 little_endian_store_16(hci_event, 14, 0); // interval 8074 little_endian_store_16(hci_event, 16, 0); // latency 8075 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8076 hci_event[20] = 0; // master clock accuracy 8077 hci_emit_event(hci_event, sizeof(hci_event), 1); 8078 // emit GAP event, too 8079 uint8_t gap_event[36]; 8080 hci_create_gap_connection_complete_event(hci_event, gap_event); 8081 hci_emit_event(gap_event, sizeof(gap_event), 1); 8082 } 8083 #endif 8084 #endif 8085 8086 static void hci_emit_transport_packet_sent(void){ 8087 // notify upper stack that it might be possible to send again 8088 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8089 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 8090 } 8091 8092 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8093 uint8_t event[6]; 8094 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8095 event[1] = sizeof(event) - 2u; 8096 event[2] = 0; // status = OK 8097 little_endian_store_16(event, 3, con_handle); 8098 event[5] = reason; 8099 hci_emit_event(event, sizeof(event), 1); 8100 } 8101 8102 static void hci_emit_nr_connections_changed(void){ 8103 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8104 uint8_t event[3]; 8105 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8106 event[1] = sizeof(event) - 2u; 8107 event[2] = nr_hci_connections(); 8108 hci_emit_event(event, sizeof(event), 1); 8109 } 8110 8111 static void hci_emit_hci_open_failed(void){ 8112 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8113 uint8_t event[2]; 8114 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8115 event[1] = sizeof(event) - 2u; 8116 hci_emit_event(event, sizeof(event), 1); 8117 } 8118 8119 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8120 log_info("hci_emit_dedicated_bonding_result %u ", status); 8121 uint8_t event[9]; 8122 int pos = 0; 8123 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8124 event[pos++] = sizeof(event) - 2u; 8125 event[pos++] = status; 8126 reverse_bd_addr(address, &event[pos]); 8127 hci_emit_event(event, sizeof(event), 1); 8128 } 8129 8130 8131 #ifdef ENABLE_CLASSIC 8132 8133 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8134 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8135 uint8_t event[5]; 8136 int pos = 0; 8137 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8138 event[pos++] = sizeof(event) - 2; 8139 little_endian_store_16(event, 2, con_handle); 8140 pos += 2; 8141 event[pos++] = level; 8142 hci_emit_event(event, sizeof(event), 1); 8143 } 8144 8145 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8146 if (!connection) return LEVEL_0; 8147 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8148 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8149 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8150 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8151 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8152 // LEVEL 4 always requires 128 bit encrytion key size 8153 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8154 security_level = LEVEL_3; 8155 } 8156 return security_level; 8157 } 8158 8159 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8160 uint8_t event[4]; 8161 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8162 event[1] = sizeof(event) - 2; 8163 event[2] = discoverable; 8164 event[3] = connectable; 8165 hci_emit_event(event, sizeof(event), 1); 8166 } 8167 8168 // query if remote side supports eSCO 8169 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8170 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8171 if (!connection) return false; 8172 return (connection->remote_supported_features[0] & 1) != 0; 8173 } 8174 8175 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8176 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8177 if (!connection) return 0; 8178 return connection->remote_supported_sco_packets; 8179 } 8180 8181 static bool hci_ssp_supported(hci_connection_t * connection){ 8182 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8183 return (connection->bonding_flags & mask) == mask; 8184 } 8185 8186 // query if remote side supports SSP 8187 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8188 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8189 if (!connection) return false; 8190 return hci_ssp_supported(connection) ? 1 : 0; 8191 } 8192 8193 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8194 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8195 } 8196 8197 /** 8198 * Check if remote supported features query has completed 8199 */ 8200 bool hci_remote_features_available(hci_con_handle_t handle){ 8201 hci_connection_t * connection = hci_connection_for_handle(handle); 8202 if (!connection) return false; 8203 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8204 } 8205 8206 /** 8207 * Trigger remote supported features query 8208 */ 8209 8210 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8211 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8212 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8213 } 8214 } 8215 8216 void hci_remote_features_query(hci_con_handle_t con_handle){ 8217 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8218 if (!connection) return; 8219 hci_trigger_remote_features_for_connection(connection); 8220 hci_run(); 8221 } 8222 8223 // GAP API 8224 /** 8225 * @bbrief enable/disable bonding. default is enabled 8226 * @praram enabled 8227 */ 8228 void gap_set_bondable_mode(int enable){ 8229 hci_stack->bondable = enable ? 1 : 0; 8230 } 8231 /** 8232 * @brief Get bondable mode. 8233 * @return 1 if bondable 8234 */ 8235 int gap_get_bondable_mode(void){ 8236 return hci_stack->bondable; 8237 } 8238 8239 /** 8240 * @brief map link keys to security levels 8241 */ 8242 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8243 switch (link_key_type){ 8244 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8245 return LEVEL_4; 8246 case COMBINATION_KEY: 8247 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8248 return LEVEL_3; 8249 default: 8250 return LEVEL_2; 8251 } 8252 } 8253 8254 /** 8255 * @brief map link keys to secure connection yes/no 8256 */ 8257 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8258 switch (link_key_type){ 8259 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8260 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8261 return true; 8262 default: 8263 return false; 8264 } 8265 } 8266 8267 /** 8268 * @brief map link keys to authenticated 8269 */ 8270 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8271 switch (link_key_type){ 8272 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8273 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8274 return true; 8275 default: 8276 return false; 8277 } 8278 } 8279 8280 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8281 log_info("gap_mitm_protection_required_for_security_level %u", level); 8282 return level > LEVEL_2; 8283 } 8284 8285 /** 8286 * @brief get current security level 8287 */ 8288 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8289 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8290 if (!connection) return LEVEL_0; 8291 return gap_security_level_for_connection(connection); 8292 } 8293 8294 /** 8295 * @brief request connection to device to 8296 * @result GAP_AUTHENTICATION_RESULT 8297 */ 8298 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8299 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8300 if (!connection){ 8301 hci_emit_security_level(con_handle, LEVEL_0); 8302 return; 8303 } 8304 8305 btstack_assert(hci_is_le_connection(connection) == false); 8306 8307 // 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) 8308 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8309 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8310 requested_level = LEVEL_4; 8311 } 8312 8313 gap_security_level_t current_level = gap_security_level(con_handle); 8314 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8315 requested_level, connection->requested_security_level, current_level); 8316 8317 // authentication active if authentication request was sent or planned level > 0 8318 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8319 if (authentication_active){ 8320 // authentication already active 8321 if (connection->requested_security_level < requested_level){ 8322 // increase requested level as new level is higher 8323 // TODO: handle re-authentication when done 8324 connection->requested_security_level = requested_level; 8325 } 8326 } else { 8327 // no request active, notify if security sufficient 8328 if (requested_level <= current_level){ 8329 hci_emit_security_level(con_handle, current_level); 8330 return; 8331 } 8332 8333 // store request 8334 connection->requested_security_level = requested_level; 8335 8336 // start to authenticate connection 8337 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8338 8339 // request remote features if not already active, also trigger hci_run 8340 hci_remote_features_query(con_handle); 8341 } 8342 } 8343 8344 /** 8345 * @brief start dedicated bonding with device. disconnect after bonding 8346 * @param device 8347 * @param request MITM protection 8348 * @result GAP_DEDICATED_BONDING_COMPLETE 8349 */ 8350 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8351 8352 // create connection state machine 8353 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8354 8355 if (!connection){ 8356 return BTSTACK_MEMORY_ALLOC_FAILED; 8357 } 8358 8359 // delete link key 8360 gap_drop_link_key_for_bd_addr(device); 8361 8362 // configure LEVEL_2/3, dedicated bonding 8363 connection->state = SEND_CREATE_CONNECTION; 8364 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8365 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8366 connection->bonding_flags = BONDING_DEDICATED; 8367 8368 hci_run(); 8369 8370 return 0; 8371 } 8372 8373 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8374 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8375 if (connection == NULL){ 8376 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8377 } 8378 if (defer){ 8379 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8380 } else { 8381 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8382 // trigger disconnect 8383 hci_run(); 8384 } 8385 return ERROR_CODE_SUCCESS; 8386 } 8387 8388 void gap_set_local_name(const char * local_name){ 8389 hci_stack->local_name = local_name; 8390 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8391 // also update EIR if not set by user 8392 if (hci_stack->eir_data == NULL){ 8393 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8394 } 8395 hci_run(); 8396 } 8397 #endif 8398 8399 8400 #ifdef ENABLE_BLE 8401 8402 #ifdef ENABLE_LE_CENTRAL 8403 void gap_start_scan(void){ 8404 hci_stack->le_scanning_enabled = true; 8405 hci_run(); 8406 } 8407 8408 void gap_stop_scan(void){ 8409 hci_stack->le_scanning_enabled = false; 8410 hci_run(); 8411 } 8412 8413 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8414 hci_stack->le_scan_type = scan_type; 8415 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8416 hci_stack->le_scan_interval = scan_interval; 8417 hci_stack->le_scan_window = scan_window; 8418 hci_stack->le_scanning_param_update = true; 8419 hci_run(); 8420 } 8421 8422 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8423 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8424 } 8425 8426 void gap_set_scan_duplicate_filter(bool enabled){ 8427 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8428 } 8429 8430 void gap_set_scan_phys(uint8_t phys){ 8431 // LE Coded and LE 1M PHY 8432 hci_stack->le_scan_phys = phys & 0x05; 8433 } 8434 8435 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8436 // disallow le connection if outgoing already active 8437 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8438 log_error("le connect already active"); 8439 return ERROR_CODE_COMMAND_DISALLOWED; 8440 } 8441 8442 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8443 if (conn == NULL) { 8444 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8445 if (conn == false){ 8446 // alloc failed 8447 log_info("gap_connect: failed to alloc hci_connection_t"); 8448 return BTSTACK_MEMORY_ALLOC_FAILED; 8449 } 8450 } else { 8451 switch (conn->state) { 8452 case RECEIVED_DISCONNECTION_COMPLETE: 8453 // connection was just disconnected, reset state and allow re-connect 8454 conn->role = HCI_ROLE_MASTER; 8455 break; 8456 default: 8457 return ERROR_CODE_COMMAND_DISALLOWED; 8458 } 8459 } 8460 8461 // set le connecting state 8462 if (hci_is_le_connection_type(addr_type)){ 8463 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8464 } 8465 8466 // trigger connect 8467 log_info("gap_connect: send create connection next"); 8468 conn->state = SEND_CREATE_CONNECTION; 8469 hci_run(); 8470 return ERROR_CODE_SUCCESS; 8471 } 8472 8473 // @assumption: only a single outgoing LE Connection exists 8474 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8475 btstack_linked_item_t *it; 8476 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8477 hci_connection_t * conn = (hci_connection_t *) it; 8478 if (hci_is_le_connection(conn)){ 8479 switch (conn->state){ 8480 case SEND_CREATE_CONNECTION: 8481 case SENT_CREATE_CONNECTION: 8482 return conn; 8483 default: 8484 break; 8485 }; 8486 } 8487 } 8488 return NULL; 8489 } 8490 8491 uint8_t gap_connect_cancel(void){ 8492 hci_connection_t * conn; 8493 switch (hci_stack->le_connecting_request){ 8494 case LE_CONNECTING_IDLE: 8495 break; 8496 case LE_CONNECTING_WHITELIST: 8497 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8498 hci_run(); 8499 break; 8500 case LE_CONNECTING_DIRECT: 8501 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8502 conn = gap_get_outgoing_le_connection(); 8503 if (conn == NULL){ 8504 hci_run(); 8505 } else { 8506 switch (conn->state){ 8507 case SEND_CREATE_CONNECTION: 8508 // skip sending create connection and emit event instead 8509 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8510 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8511 btstack_memory_hci_connection_free( conn ); 8512 break; 8513 case SENT_CREATE_CONNECTION: 8514 // let hci_run_general_gap_le cancel outgoing connection 8515 hci_run(); 8516 break; 8517 default: 8518 break; 8519 } 8520 } 8521 break; 8522 default: 8523 btstack_unreachable(); 8524 break; 8525 } 8526 return ERROR_CODE_SUCCESS; 8527 } 8528 8529 /** 8530 * @brief Set connection parameters for outgoing connections 8531 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8532 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8533 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8534 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8535 * @param conn_latency, default: 4 8536 * @param supervision_timeout (unit: 10ms), default: 720 ms 8537 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8538 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8539 */ 8540 8541 void gap_set_connection_phys(uint8_t phys){ 8542 // LE Coded, LE 1M, LE 2M PHY 8543 hci_stack->le_connection_phys = phys & 7; 8544 } 8545 8546 #endif 8547 8548 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8549 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8550 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8551 hci_stack->le_connection_scan_interval = conn_scan_interval; 8552 hci_stack->le_connection_scan_window = conn_scan_window; 8553 hci_stack->le_connection_interval_min = conn_interval_min; 8554 hci_stack->le_connection_interval_max = conn_interval_max; 8555 hci_stack->le_connection_latency = conn_latency; 8556 hci_stack->le_supervision_timeout = supervision_timeout; 8557 hci_stack->le_minimum_ce_length = min_ce_length; 8558 hci_stack->le_maximum_ce_length = max_ce_length; 8559 } 8560 8561 /** 8562 * @brief Updates the connection parameters for a given LE connection 8563 * @param handle 8564 * @param conn_interval_min (unit: 1.25ms) 8565 * @param conn_interval_max (unit: 1.25ms) 8566 * @param conn_latency 8567 * @param supervision_timeout (unit: 10ms) 8568 * @return 0 if ok 8569 */ 8570 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8571 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8572 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8573 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8574 connection->le_conn_interval_min = conn_interval_min; 8575 connection->le_conn_interval_max = conn_interval_max; 8576 connection->le_conn_latency = conn_latency; 8577 connection->le_supervision_timeout = supervision_timeout; 8578 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8579 hci_run(); 8580 return 0; 8581 } 8582 8583 /** 8584 * @brief Request an update of the connection parameter for a given LE connection 8585 * @param handle 8586 * @param conn_interval_min (unit: 1.25ms) 8587 * @param conn_interval_max (unit: 1.25ms) 8588 * @param conn_latency 8589 * @param supervision_timeout (unit: 10ms) 8590 * @return 0 if ok 8591 */ 8592 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8593 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8594 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8595 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8596 connection->le_conn_interval_min = conn_interval_min; 8597 connection->le_conn_interval_max = conn_interval_max; 8598 connection->le_conn_latency = conn_latency; 8599 connection->le_supervision_timeout = supervision_timeout; 8600 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8601 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8602 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8603 return 0; 8604 } 8605 8606 #ifdef ENABLE_LE_PERIPHERAL 8607 8608 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8609 static void hci_assert_advertisement_set_0_ready(void){ 8610 // force advertising set creation for legacy LE Advertising 8611 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8612 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8613 } 8614 } 8615 #endif 8616 8617 /** 8618 * @brief Set Advertisement Data 8619 * @param advertising_data_length 8620 * @param advertising_data (max 31 octets) 8621 * @note data is not copied, pointer has to stay valid 8622 */ 8623 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8624 hci_stack->le_advertisements_data_len = advertising_data_length; 8625 hci_stack->le_advertisements_data = advertising_data; 8626 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8627 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8628 hci_assert_advertisement_set_0_ready(); 8629 #endif 8630 hci_run(); 8631 } 8632 8633 /** 8634 * @brief Set Scan Response Data 8635 * @param advertising_data_length 8636 * @param advertising_data (max 31 octets) 8637 * @note data is not copied, pointer has to stay valid 8638 */ 8639 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8640 hci_stack->le_scan_response_data_len = scan_response_data_length; 8641 hci_stack->le_scan_response_data = scan_response_data; 8642 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8643 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8644 hci_assert_advertisement_set_0_ready(); 8645 #endif 8646 hci_run(); 8647 } 8648 8649 /** 8650 * @brief Set Advertisement Parameters 8651 * @param adv_int_min 8652 * @param adv_int_max 8653 * @param adv_type 8654 * @param direct_address_type 8655 * @param direct_address 8656 * @param channel_map 8657 * @param filter_policy 8658 * 8659 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8660 */ 8661 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8662 uint8_t direct_address_typ, bd_addr_t direct_address, 8663 uint8_t channel_map, uint8_t filter_policy) { 8664 8665 hci_stack->le_advertisements_interval_min = adv_int_min; 8666 hci_stack->le_advertisements_interval_max = adv_int_max; 8667 hci_stack->le_advertisements_type = adv_type; 8668 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8669 hci_stack->le_advertisements_channel_map = channel_map; 8670 hci_stack->le_advertisements_filter_policy = filter_policy; 8671 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8672 6); 8673 8674 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8675 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8676 hci_run(); 8677 } 8678 8679 /** 8680 * @brief Enable/Disable Advertisements 8681 * @param enabled 8682 */ 8683 void gap_advertisements_enable(int enabled){ 8684 if (enabled == 0){ 8685 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8686 } else { 8687 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8688 } 8689 hci_update_advertisements_enabled_for_current_roles(); 8690 hci_run(); 8691 } 8692 8693 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8694 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8695 btstack_linked_list_iterator_t it; 8696 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8697 while (btstack_linked_list_iterator_has_next(&it)){ 8698 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8699 if ( item->advertising_handle == advertising_handle ) { 8700 return item; 8701 } 8702 } 8703 return NULL; 8704 } 8705 8706 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8707 hci_stack->le_resolvable_private_address_update_s = update_s; 8708 hci_run(); 8709 return ERROR_CODE_SUCCESS; 8710 } 8711 8712 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8713 // find free advertisement handle 8714 uint8_t advertisement_handle; 8715 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8716 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8717 } 8718 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8719 // clear 8720 memset(storage, 0, sizeof(le_advertising_set_t)); 8721 // copy params 8722 storage->advertising_handle = advertisement_handle; 8723 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8724 // add to list 8725 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8726 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8727 *out_advertising_handle = advertisement_handle; 8728 // set tasks and start 8729 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8730 hci_run(); 8731 return ERROR_CODE_SUCCESS; 8732 } 8733 8734 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8735 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8736 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8737 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8738 // set tasks and start 8739 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8740 hci_run(); 8741 return ERROR_CODE_SUCCESS; 8742 } 8743 8744 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8745 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8746 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8747 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8748 return ERROR_CODE_SUCCESS; 8749 } 8750 8751 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8752 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8753 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8754 memcpy(advertising_set->random_address, random_address, 6); 8755 // set tasks and start 8756 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8757 hci_run(); 8758 return ERROR_CODE_SUCCESS; 8759 } 8760 8761 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8762 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8763 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8764 advertising_set->adv_data = advertising_data; 8765 advertising_set->adv_data_len = advertising_data_length; 8766 // set tasks and start 8767 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8768 hci_run(); 8769 return ERROR_CODE_SUCCESS; 8770 } 8771 8772 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){ 8773 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8774 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8775 advertising_set->scan_data = scan_response_data; 8776 advertising_set->scan_data_len = scan_response_data_length; 8777 // set tasks and start 8778 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8779 hci_run(); 8780 return ERROR_CODE_SUCCESS; 8781 } 8782 8783 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8784 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8785 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8786 advertising_set->enable_timeout = timeout; 8787 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8788 // set tasks and start 8789 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8790 hci_run(); 8791 return ERROR_CODE_SUCCESS; 8792 } 8793 8794 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8795 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8796 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8797 // set tasks and start 8798 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8799 hci_run(); 8800 return ERROR_CODE_SUCCESS; 8801 } 8802 8803 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8804 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8805 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8806 // set tasks and start 8807 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8808 hci_run(); 8809 return ERROR_CODE_SUCCESS; 8810 } 8811 8812 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8813 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8814 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8815 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8816 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8817 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8818 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8819 // set tasks and start 8820 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8821 hci_run(); 8822 return ERROR_CODE_SUCCESS; 8823 } 8824 8825 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8826 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8827 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8828 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8829 return ERROR_CODE_SUCCESS; 8830 } 8831 8832 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8833 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8834 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8835 advertising_set->periodic_data = periodic_data; 8836 advertising_set->periodic_data_len = periodic_data_length; 8837 // set tasks and start 8838 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8839 hci_run(); 8840 return ERROR_CODE_SUCCESS; 8841 } 8842 8843 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8844 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8845 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8846 // set tasks and start 8847 advertising_set->periodic_include_adi = include_adi; 8848 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8849 hci_run(); 8850 return ERROR_CODE_SUCCESS; 8851 } 8852 8853 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8854 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8855 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8856 // set tasks and start 8857 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8858 hci_run(); 8859 return ERROR_CODE_SUCCESS; 8860 } 8861 8862 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8863 hci_stack->le_past_mode = mode; 8864 hci_stack->le_past_skip = skip; 8865 hci_stack->le_past_sync_timeout = sync_timeout; 8866 hci_stack->le_past_cte_type = cte_type; 8867 hci_stack->le_past_set_default_params = true; 8868 hci_run(); 8869 return ERROR_CODE_SUCCESS; 8870 } 8871 8872 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8873 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8874 if (hci_connection == NULL){ 8875 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8876 } 8877 hci_connection->le_past_sync_handle = sync_handle; 8878 hci_connection->le_past_service_data = service_data; 8879 hci_run(); 8880 return ERROR_CODE_SUCCESS; 8881 } 8882 8883 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8884 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8885 if (hci_connection == NULL){ 8886 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8887 } 8888 hci_connection->le_past_advertising_handle = advertising_handle; 8889 hci_connection->le_past_service_data = service_data; 8890 hci_run(); 8891 return ERROR_CODE_SUCCESS; 8892 } 8893 8894 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8895 8896 #endif 8897 8898 #endif 8899 8900 void hci_le_set_own_address_type(uint8_t own_address_type){ 8901 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8902 if (own_address_type == hci_stack->le_own_addr_type) return; 8903 hci_stack->le_own_addr_type = own_address_type; 8904 8905 #ifdef ENABLE_LE_PERIPHERAL 8906 // update advertisement parameters, too 8907 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8908 hci_run(); 8909 #endif 8910 #ifdef ENABLE_LE_CENTRAL 8911 // note: we don't update scan parameters or modify ongoing connection attempts 8912 #endif 8913 } 8914 8915 void hci_le_random_address_set(const bd_addr_t random_address){ 8916 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 8917 memcpy(hci_stack->le_random_address, random_address, 6); 8918 hci_stack->le_random_address_set = true; 8919 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 8920 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8921 if (hci_le_extended_advertising_supported()){ 8922 hci_assert_advertisement_set_0_ready(); 8923 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8924 } 8925 #endif 8926 hci_run(); 8927 } 8928 8929 #endif 8930 8931 uint8_t gap_disconnect(hci_con_handle_t handle){ 8932 hci_connection_t * conn = hci_connection_for_handle(handle); 8933 if (!conn){ 8934 hci_emit_disconnection_complete(handle, 0); 8935 return 0; 8936 } 8937 // ignore if already disconnected 8938 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8939 return 0; 8940 } 8941 conn->state = SEND_DISCONNECT; 8942 hci_run(); 8943 return 0; 8944 } 8945 8946 int gap_read_rssi(hci_con_handle_t con_handle){ 8947 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8948 if (hci_connection == NULL) return 0; 8949 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8950 hci_run(); 8951 return 1; 8952 } 8953 8954 /** 8955 * @brief Get connection type 8956 * @param con_handle 8957 * @result connection_type 8958 */ 8959 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8960 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8961 if (!conn) return GAP_CONNECTION_INVALID; 8962 switch (conn->address_type){ 8963 case BD_ADDR_TYPE_LE_PUBLIC: 8964 case BD_ADDR_TYPE_LE_RANDOM: 8965 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8966 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8967 return GAP_CONNECTION_LE; 8968 case BD_ADDR_TYPE_SCO: 8969 return GAP_CONNECTION_SCO; 8970 case BD_ADDR_TYPE_ACL: 8971 return GAP_CONNECTION_ACL; 8972 default: 8973 return GAP_CONNECTION_INVALID; 8974 } 8975 } 8976 8977 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8978 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8979 if (!conn) return HCI_ROLE_INVALID; 8980 return (hci_role_t) conn->role; 8981 } 8982 8983 8984 #ifdef ENABLE_CLASSIC 8985 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8986 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8987 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8988 conn->request_role = role; 8989 hci_run(); 8990 return ERROR_CODE_SUCCESS; 8991 } 8992 #endif 8993 8994 #ifdef ENABLE_BLE 8995 8996 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){ 8997 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8998 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8999 9000 conn->le_phy_update_all_phys = all_phys; 9001 conn->le_phy_update_tx_phys = tx_phys; 9002 conn->le_phy_update_rx_phys = rx_phys; 9003 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9004 9005 hci_run(); 9006 9007 return 0; 9008 } 9009 9010 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9011 9012 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9013 // incorrect configuration: 9014 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9015 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9016 btstack_assert(false); 9017 #endif 9018 9019 // check if already in list 9020 btstack_linked_list_iterator_t it; 9021 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9022 while (btstack_linked_list_iterator_has_next(&it)) { 9023 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9024 if (entry->address_type != address_type) { 9025 continue; 9026 } 9027 if (memcmp(entry->address, address, 6) != 0) { 9028 continue; 9029 } 9030 9031 // if already on controller: 9032 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9033 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9034 // drop remove request 9035 entry->state = LE_WHITELIST_ON_CONTROLLER; 9036 return ERROR_CODE_SUCCESS; 9037 } else { 9038 // disallow as already on controller 9039 return ERROR_CODE_COMMAND_DISALLOWED; 9040 } 9041 } 9042 9043 // assume scheduled to add 9044 return ERROR_CODE_COMMAND_DISALLOWED; 9045 } 9046 9047 // alloc and add to list 9048 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9049 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9050 entry->address_type = address_type; 9051 (void)memcpy(entry->address, address, 6); 9052 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9053 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9054 return ERROR_CODE_SUCCESS; 9055 } 9056 9057 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9058 btstack_linked_list_iterator_t it; 9059 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9060 while (btstack_linked_list_iterator_has_next(&it)){ 9061 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9062 if (entry->address_type != address_type) { 9063 continue; 9064 } 9065 if (memcmp(entry->address, address, 6) != 0) { 9066 continue; 9067 } 9068 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9069 // remove from controller if already present 9070 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9071 } else { 9072 // directly remove entry from whitelist 9073 btstack_linked_list_iterator_remove(&it); 9074 btstack_memory_whitelist_entry_free(entry); 9075 } 9076 return ERROR_CODE_SUCCESS; 9077 } 9078 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9079 } 9080 9081 static void hci_whitelist_clear(void){ 9082 btstack_linked_list_iterator_t it; 9083 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9084 while (btstack_linked_list_iterator_has_next(&it)){ 9085 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9086 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9087 // remove from controller if already present 9088 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9089 continue; 9090 } 9091 // directly remove entry from whitelist 9092 btstack_linked_list_iterator_remove(&it); 9093 btstack_memory_whitelist_entry_free(entry); 9094 } 9095 } 9096 9097 /** 9098 * @brief Clear Whitelist 9099 * @return 0 if ok 9100 */ 9101 uint8_t gap_whitelist_clear(void){ 9102 hci_whitelist_clear(); 9103 hci_run(); 9104 return ERROR_CODE_SUCCESS; 9105 } 9106 9107 /** 9108 * @brief Add Device to Whitelist 9109 * @param address_typ 9110 * @param address 9111 * @return 0 if ok 9112 */ 9113 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9114 uint8_t status = hci_whitelist_add(address_type, address); 9115 if (status){ 9116 return status; 9117 } 9118 hci_run(); 9119 return ERROR_CODE_SUCCESS; 9120 } 9121 9122 /** 9123 * @brief Remove Device from Whitelist 9124 * @param address_typ 9125 * @param address 9126 * @return 0 if ok 9127 */ 9128 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9129 uint8_t status = hci_whitelist_remove(address_type, address); 9130 if (status){ 9131 return status; 9132 } 9133 hci_run(); 9134 return ERROR_CODE_SUCCESS; 9135 } 9136 9137 #ifdef ENABLE_LE_CENTRAL 9138 /** 9139 * @brief Connect with Whitelist 9140 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9141 * @return - if ok 9142 */ 9143 uint8_t gap_connect_with_whitelist(void){ 9144 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9145 return ERROR_CODE_COMMAND_DISALLOWED; 9146 } 9147 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9148 hci_run(); 9149 return ERROR_CODE_SUCCESS; 9150 } 9151 9152 /** 9153 * @brief Auto Connection Establishment - Start Connecting to device 9154 * @param address_typ 9155 * @param address 9156 * @return 0 if ok 9157 */ 9158 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9159 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9160 return ERROR_CODE_COMMAND_DISALLOWED; 9161 } 9162 9163 uint8_t status = hci_whitelist_add(address_type, address); 9164 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9165 return status; 9166 } 9167 9168 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9169 9170 hci_run(); 9171 return ERROR_CODE_SUCCESS; 9172 } 9173 9174 /** 9175 * @brief Auto Connection Establishment - Stop Connecting to device 9176 * @param address_typ 9177 * @param address 9178 * @return 0 if ok 9179 */ 9180 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9181 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9182 return ERROR_CODE_COMMAND_DISALLOWED; 9183 } 9184 9185 hci_whitelist_remove(address_type, address); 9186 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9187 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9188 } 9189 hci_run(); 9190 return 0; 9191 } 9192 9193 /** 9194 * @brief Auto Connection Establishment - Stop everything 9195 * @note Convenience function to stop all active auto connection attempts 9196 */ 9197 uint8_t gap_auto_connection_stop_all(void){ 9198 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9199 return ERROR_CODE_COMMAND_DISALLOWED; 9200 } 9201 hci_whitelist_clear(); 9202 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9203 hci_run(); 9204 return ERROR_CODE_SUCCESS; 9205 } 9206 9207 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9208 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9209 if (!conn) return 0; 9210 return conn->le_connection_interval; 9211 } 9212 #endif 9213 #endif 9214 9215 #ifdef ENABLE_CLASSIC 9216 /** 9217 * @brief Set Extended Inquiry Response data 9218 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9219 * @note has to be done before stack starts up 9220 */ 9221 void gap_set_extended_inquiry_response(const uint8_t * data){ 9222 hci_stack->eir_data = data; 9223 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9224 hci_run(); 9225 } 9226 9227 /** 9228 * @brief Start GAP Classic Inquiry 9229 * @param duration in 1.28s units 9230 * @return 0 if ok 9231 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9232 */ 9233 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9234 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9235 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9236 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9237 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9238 } 9239 hci_stack->inquiry_state = duration_in_1280ms_units; 9240 hci_stack->inquiry_max_period_length = 0; 9241 hci_stack->inquiry_min_period_length = 0; 9242 hci_run(); 9243 return 0; 9244 } 9245 9246 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9247 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9248 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9249 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9250 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9251 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9252 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9253 9254 hci_stack->inquiry_state = duration; 9255 hci_stack->inquiry_max_period_length = max_period_length; 9256 hci_stack->inquiry_min_period_length = min_period_length; 9257 hci_run(); 9258 return 0; 9259 } 9260 9261 /** 9262 * @brief Stop GAP Classic Inquiry 9263 * @return 0 if ok 9264 */ 9265 int gap_inquiry_stop(void){ 9266 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9267 // emit inquiry complete event, before it even started 9268 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9269 hci_emit_event(event, sizeof(event), 1); 9270 return 0; 9271 } 9272 switch (hci_stack->inquiry_state){ 9273 case GAP_INQUIRY_STATE_ACTIVE: 9274 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9275 hci_run(); 9276 return ERROR_CODE_SUCCESS; 9277 case GAP_INQUIRY_STATE_PERIODIC: 9278 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9279 hci_run(); 9280 return ERROR_CODE_SUCCESS; 9281 default: 9282 return ERROR_CODE_COMMAND_DISALLOWED; 9283 } 9284 } 9285 9286 void gap_inquiry_set_lap(uint32_t lap){ 9287 hci_stack->inquiry_lap = lap; 9288 } 9289 9290 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9291 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9292 hci_stack->inquiry_scan_window = inquiry_scan_window; 9293 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9294 hci_run(); 9295 } 9296 9297 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9298 { 9299 hci_stack->inquiry_tx_power_level = tx_power; 9300 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9301 hci_run(); 9302 } 9303 9304 9305 /** 9306 * @brief Remote Name Request 9307 * @param addr 9308 * @param page_scan_repetition_mode 9309 * @param clock_offset only used when bit 15 is set 9310 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9311 */ 9312 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9313 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9314 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9315 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9316 hci_stack->remote_name_clock_offset = clock_offset; 9317 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9318 hci_run(); 9319 return 0; 9320 } 9321 9322 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9323 hci_stack->gap_pairing_state = state; 9324 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9325 hci_run(); 9326 return 0; 9327 } 9328 9329 /** 9330 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9331 * @param addr 9332 * @param pin_data 9333 * @param pin_len 9334 * @return 0 if ok 9335 */ 9336 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9337 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9338 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9339 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9340 hci_stack->gap_pairing_pin_len = pin_len; 9341 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9342 } 9343 9344 /** 9345 * @brief Legacy Pairing Pin Code Response 9346 * @param addr 9347 * @param pin 9348 * @return 0 if ok 9349 */ 9350 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9351 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9352 } 9353 9354 /** 9355 * @brief Abort Legacy Pairing 9356 * @param addr 9357 * @param pin 9358 * @return 0 if ok 9359 */ 9360 int gap_pin_code_negative(bd_addr_t addr){ 9361 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9362 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9363 } 9364 9365 /** 9366 * @brief SSP Passkey Response 9367 * @param addr 9368 * @param passkey 9369 * @return 0 if ok 9370 */ 9371 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9372 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9373 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9374 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9375 } 9376 9377 /** 9378 * @brief Abort SSP Passkey Entry/Pairing 9379 * @param addr 9380 * @param pin 9381 * @return 0 if ok 9382 */ 9383 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9384 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9385 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9386 } 9387 9388 /** 9389 * @brief Accept SSP Numeric Comparison 9390 * @param addr 9391 * @param passkey 9392 * @return 0 if ok 9393 */ 9394 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9395 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9396 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9397 } 9398 9399 /** 9400 * @brief Abort SSP Numeric Comparison/Pairing 9401 * @param addr 9402 * @param pin 9403 * @return 0 if ok 9404 */ 9405 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9406 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9407 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9408 } 9409 9410 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9411 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9412 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9413 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9414 connectionSetAuthenticationFlags(conn, flag); 9415 hci_run(); 9416 return ERROR_CODE_SUCCESS; 9417 } 9418 #endif 9419 9420 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9421 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9422 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9423 } 9424 9425 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9426 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9427 } 9428 #endif 9429 9430 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9431 /** 9432 * @brief Report Remote OOB Data 9433 * @param bd_addr 9434 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9435 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9436 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9437 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9438 */ 9439 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){ 9440 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9441 if (connection == NULL) { 9442 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9443 } 9444 connection->classic_oob_c_192 = c_192; 9445 connection->classic_oob_r_192 = r_192; 9446 9447 // ignore P-256 if not supported by us 9448 if (hci_stack->secure_connections_active){ 9449 connection->classic_oob_c_256 = c_256; 9450 connection->classic_oob_r_256 = r_256; 9451 } 9452 9453 return ERROR_CODE_SUCCESS; 9454 } 9455 /** 9456 * @brief Generate new OOB data 9457 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9458 */ 9459 void gap_ssp_generate_oob_data(void){ 9460 hci_stack->classic_read_local_oob_data = true; 9461 hci_run(); 9462 } 9463 9464 #endif 9465 9466 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9467 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9468 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9469 if (connection == NULL) { 9470 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9471 } 9472 9473 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9474 connection->link_key_type = type; 9475 9476 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9477 } 9478 9479 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9480 /** 9481 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9482 * @param inquiry_mode see bluetooth_defines.h 9483 */ 9484 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9485 hci_stack->inquiry_mode = inquiry_mode; 9486 } 9487 9488 /** 9489 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9490 */ 9491 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9492 hci_stack->sco_voice_setting = voice_setting; 9493 } 9494 9495 /** 9496 * @brief Get SCO Voice Setting 9497 * @return current voice setting 9498 */ 9499 uint16_t hci_get_sco_voice_setting(void){ 9500 return hci_stack->sco_voice_setting; 9501 } 9502 9503 static int hci_have_usb_transport(void){ 9504 if (!hci_stack->hci_transport) return 0; 9505 const char * transport_name = hci_stack->hci_transport->name; 9506 if (!transport_name) return 0; 9507 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9508 } 9509 9510 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9511 uint16_t sco_packet_length = 0; 9512 9513 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9514 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9515 int multiplier; 9516 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9517 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9518 multiplier = 2; 9519 } else { 9520 multiplier = 1; 9521 } 9522 #endif 9523 9524 #ifdef ENABLE_SCO_OVER_HCI 9525 if (hci_have_usb_transport()){ 9526 // see Core Spec for H2 USB Transfer. 9527 // 3 byte SCO header + 24 bytes per connection 9528 // @note multiple sco connections not supported currently 9529 sco_packet_length = 3 + 24 * multiplier; 9530 } else { 9531 // 3 byte SCO header + SCO packet length over the air 9532 sco_packet_length = 3 + payload_size * multiplier; 9533 // assert that it still fits inside an SCO buffer 9534 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9535 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9536 } 9537 } 9538 #endif 9539 #ifdef HAVE_SCO_TRANSPORT 9540 // 3 byte SCO header + SCO packet length over the air 9541 sco_packet_length = 3 + payload_size * multiplier; 9542 // assert that it still fits inside an SCO buffer 9543 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9544 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9545 } 9546 #endif 9547 return sco_packet_length; 9548 } 9549 9550 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9551 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9552 if (connection != NULL){ 9553 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9554 } 9555 return 0; 9556 } 9557 9558 uint16_t hci_get_sco_packet_length(void){ 9559 btstack_linked_list_iterator_t it; 9560 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9561 while (btstack_linked_list_iterator_has_next(&it)){ 9562 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9563 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9564 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9565 } 9566 } 9567 return 0; 9568 } 9569 9570 /** 9571 * @brief Sets the master/slave policy 9572 * @param policy (0: attempt to become master, 1: let connecting device decide) 9573 */ 9574 void hci_set_master_slave_policy(uint8_t policy){ 9575 hci_stack->master_slave_policy = policy; 9576 } 9577 9578 #endif 9579 9580 HCI_STATE hci_get_state(void){ 9581 return hci_stack->state; 9582 } 9583 9584 #ifdef ENABLE_CLASSIC 9585 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9586 hci_stack->gap_classic_accept_callback = accept_callback; 9587 } 9588 #endif 9589 9590 /** 9591 * @brief Set callback for Bluetooth Hardware Error 9592 */ 9593 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9594 hci_stack->hardware_error_callback = fn; 9595 } 9596 9597 void hci_disconnect_all(void){ 9598 btstack_linked_list_iterator_t it; 9599 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9600 while (btstack_linked_list_iterator_has_next(&it)){ 9601 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9602 if (con->state == SENT_DISCONNECT) continue; 9603 con->state = SEND_DISCONNECT; 9604 } 9605 hci_run(); 9606 } 9607 9608 uint16_t hci_get_manufacturer(void){ 9609 return hci_stack->manufacturer; 9610 } 9611 9612 #ifdef ENABLE_BLE 9613 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9614 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9615 if (!hci_con) return NULL; 9616 return &hci_con->sm_connection; 9617 } 9618 9619 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9620 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9621 #endif 9622 9623 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9624 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9625 if (hci_connection == NULL) return 0; 9626 if (hci_is_le_connection(hci_connection)){ 9627 #ifdef ENABLE_BLE 9628 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9629 if (sm_conn->sm_connection_encrypted != 0u) { 9630 return sm_conn->sm_actual_encryption_key_size; 9631 } 9632 #endif 9633 } else { 9634 #ifdef ENABLE_CLASSIC 9635 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9636 return hci_connection->encryption_key_size; 9637 } 9638 #endif 9639 } 9640 return 0; 9641 } 9642 9643 bool gap_authenticated(hci_con_handle_t con_handle){ 9644 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9645 if (hci_connection == NULL) return false; 9646 9647 switch (hci_connection->address_type){ 9648 #ifdef ENABLE_BLE 9649 case BD_ADDR_TYPE_LE_PUBLIC: 9650 case BD_ADDR_TYPE_LE_RANDOM: 9651 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9652 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9653 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9654 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9655 #endif 9656 #ifdef ENABLE_CLASSIC 9657 case BD_ADDR_TYPE_SCO: 9658 case BD_ADDR_TYPE_ACL: 9659 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9660 #endif 9661 default: 9662 return false; 9663 } 9664 } 9665 9666 bool gap_secure_connection(hci_con_handle_t con_handle){ 9667 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9668 if (hci_connection == NULL) return 0; 9669 9670 switch (hci_connection->address_type){ 9671 #ifdef ENABLE_BLE 9672 case BD_ADDR_TYPE_LE_PUBLIC: 9673 case BD_ADDR_TYPE_LE_RANDOM: 9674 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9675 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9676 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9677 return hci_connection->sm_connection.sm_connection_sc; 9678 #endif 9679 #ifdef ENABLE_CLASSIC 9680 case BD_ADDR_TYPE_SCO: 9681 case BD_ADDR_TYPE_ACL: 9682 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9683 #endif 9684 default: 9685 return false; 9686 } 9687 } 9688 9689 bool gap_bonded(hci_con_handle_t con_handle){ 9690 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9691 if (hci_connection == NULL) return 0; 9692 9693 #ifdef ENABLE_CLASSIC 9694 link_key_t link_key; 9695 link_key_type_t link_key_type; 9696 #endif 9697 switch (hci_connection->address_type){ 9698 #ifdef ENABLE_BLE 9699 case BD_ADDR_TYPE_LE_PUBLIC: 9700 case BD_ADDR_TYPE_LE_RANDOM: 9701 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9702 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9703 return hci_connection->sm_connection.sm_le_db_index >= 0; 9704 #endif 9705 #ifdef ENABLE_CLASSIC 9706 case BD_ADDR_TYPE_SCO: 9707 case BD_ADDR_TYPE_ACL: 9708 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9709 #endif 9710 default: 9711 return false; 9712 } 9713 } 9714 9715 #ifdef ENABLE_BLE 9716 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9717 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9718 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9719 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9720 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9721 return sm_conn->sm_connection_authorization_state; 9722 } 9723 #endif 9724 9725 #ifdef ENABLE_CLASSIC 9726 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){ 9727 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9728 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9729 conn->sniff_min_interval = sniff_min_interval; 9730 conn->sniff_max_interval = sniff_max_interval; 9731 conn->sniff_attempt = sniff_attempt; 9732 conn->sniff_timeout = sniff_timeout; 9733 hci_run(); 9734 return 0; 9735 } 9736 9737 /** 9738 * @brief Exit Sniff mode 9739 * @param con_handle 9740 @ @return 0 if ok 9741 */ 9742 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9743 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9744 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9745 conn->sniff_min_interval = 0xffff; 9746 hci_run(); 9747 return 0; 9748 } 9749 9750 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){ 9751 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9752 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9753 conn->sniff_subrating_max_latency = max_latency; 9754 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9755 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9756 hci_run(); 9757 return ERROR_CODE_SUCCESS; 9758 } 9759 9760 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){ 9761 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9762 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9763 conn->qos_service_type = service_type; 9764 conn->qos_token_rate = token_rate; 9765 conn->qos_peak_bandwidth = peak_bandwidth; 9766 conn->qos_latency = latency; 9767 conn->qos_delay_variation = delay_variation; 9768 hci_run(); 9769 return ERROR_CODE_SUCCESS; 9770 } 9771 9772 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9773 hci_stack->new_page_scan_interval = page_scan_interval; 9774 hci_stack->new_page_scan_window = page_scan_window; 9775 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9776 hci_run(); 9777 } 9778 9779 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9780 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9781 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9782 hci_run(); 9783 } 9784 9785 void gap_set_page_timeout(uint16_t page_timeout){ 9786 hci_stack->page_timeout = page_timeout; 9787 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9788 hci_run(); 9789 } 9790 9791 #endif 9792 9793 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9794 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9795 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9796 if (le_device_db_index >= le_device_db_max_count()) return; 9797 uint8_t offset = le_device_db_index >> 3; 9798 uint8_t mask = 1 << (le_device_db_index & 7); 9799 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9800 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9801 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9802 // note: go back to remove entries, otherwise, a remove + add will skip the add 9803 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9804 } 9805 } 9806 9807 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9808 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9809 if (le_device_db_index >= le_device_db_max_count()) return; 9810 uint8_t offset = le_device_db_index >> 3; 9811 uint8_t mask = 1 << (le_device_db_index & 7); 9812 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9813 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9814 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9815 } 9816 } 9817 9818 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9819 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9820 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9821 } 9822 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9823 // restart le resolving list update 9824 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9825 } 9826 return ERROR_CODE_SUCCESS; 9827 } 9828 9829 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9830 hci_stack->le_privacy_mode = privacy_mode; 9831 } 9832 #endif 9833 9834 #ifdef ENABLE_BLE 9835 #ifdef ENABLE_LE_CENTRAL 9836 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9837 9838 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9839 9840 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9841 // incorrect configuration: 9842 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9843 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9844 btstack_assert(false); 9845 #endif 9846 9847 // check if already in list 9848 btstack_linked_list_iterator_t it; 9849 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9850 while (btstack_linked_list_iterator_has_next(&it)) { 9851 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9852 if (entry->sid != advertising_sid) { 9853 continue; 9854 } 9855 if (entry->address_type != address_type) { 9856 continue; 9857 } 9858 if (memcmp(entry->address, address, 6) != 0) { 9859 continue; 9860 } 9861 // disallow if already scheduled to add 9862 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9863 return ERROR_CODE_COMMAND_DISALLOWED; 9864 } 9865 // still on controller, but scheduled to remove -> re-add 9866 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9867 return ERROR_CODE_SUCCESS; 9868 } 9869 // alloc and add to list 9870 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9871 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9872 entry->sid = advertising_sid; 9873 entry->address_type = address_type; 9874 (void)memcpy(entry->address, address, 6); 9875 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9876 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9877 return ERROR_CODE_SUCCESS; 9878 } 9879 9880 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9881 btstack_linked_list_iterator_t it; 9882 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9883 while (btstack_linked_list_iterator_has_next(&it)){ 9884 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9885 if (entry->sid != advertising_sid) { 9886 continue; 9887 } 9888 if (entry->address_type != address_type) { 9889 continue; 9890 } 9891 if (memcmp(entry->address, address, 6) != 0) { 9892 continue; 9893 } 9894 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9895 // remove from controller if already present 9896 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9897 } else { 9898 // directly remove entry from whitelist 9899 btstack_linked_list_iterator_remove(&it); 9900 btstack_memory_periodic_advertiser_list_entry_free(entry); 9901 } 9902 return ERROR_CODE_SUCCESS; 9903 } 9904 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9905 } 9906 9907 static void hci_periodic_advertiser_list_clear(void){ 9908 btstack_linked_list_iterator_t it; 9909 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9910 while (btstack_linked_list_iterator_has_next(&it)){ 9911 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9912 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9913 // remove from controller if already present 9914 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9915 continue; 9916 } 9917 // directly remove entry from whitelist 9918 btstack_linked_list_iterator_remove(&it); 9919 btstack_memory_periodic_advertiser_list_entry_free(entry); 9920 } 9921 } 9922 9923 uint8_t gap_periodic_advertiser_list_clear(void){ 9924 hci_periodic_advertiser_list_clear(); 9925 hci_run(); 9926 return ERROR_CODE_SUCCESS; 9927 } 9928 9929 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9930 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9931 if (status){ 9932 return status; 9933 } 9934 hci_run(); 9935 return ERROR_CODE_SUCCESS; 9936 } 9937 9938 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9939 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9940 if (status){ 9941 return status; 9942 } 9943 hci_run(); 9944 return ERROR_CODE_SUCCESS; 9945 } 9946 9947 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9948 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9949 // abort if already active 9950 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9951 return ERROR_CODE_COMMAND_DISALLOWED; 9952 } 9953 // store request 9954 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9955 hci_stack->le_periodic_sync_options = options; 9956 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9957 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9958 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9959 hci_stack->le_periodic_sync_skip = skip; 9960 hci_stack->le_periodic_sync_timeout = sync_timeout; 9961 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9962 9963 hci_run(); 9964 return ERROR_CODE_SUCCESS; 9965 } 9966 9967 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9968 // abort if not requested 9969 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9970 return ERROR_CODE_COMMAND_DISALLOWED; 9971 } 9972 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9973 hci_run(); 9974 return ERROR_CODE_SUCCESS; 9975 } 9976 9977 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9978 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9979 return ERROR_CODE_COMMAND_DISALLOWED; 9980 } 9981 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9982 hci_run(); 9983 return ERROR_CODE_SUCCESS; 9984 } 9985 9986 #endif 9987 #endif 9988 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9989 static hci_iso_stream_t * 9990 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9991 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9992 if (iso_stream != NULL){ 9993 iso_stream->iso_type = iso_type; 9994 iso_stream->state = state; 9995 iso_stream->group_id = group_id; 9996 iso_stream->stream_id = stream_id; 9997 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9998 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9999 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10000 } 10001 return iso_stream; 10002 } 10003 10004 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10005 btstack_linked_list_iterator_t it; 10006 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10007 while (btstack_linked_list_iterator_has_next(&it)){ 10008 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10009 if (iso_stream->cis_handle == con_handle ) { 10010 return iso_stream; 10011 } 10012 } 10013 return NULL; 10014 } 10015 10016 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10017 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10018 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10019 btstack_memory_hci_iso_stream_free(iso_stream); 10020 } 10021 10022 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10023 btstack_linked_list_iterator_t it; 10024 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10025 while (btstack_linked_list_iterator_has_next(&it)){ 10026 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10027 if ((iso_stream->group_id == group_id) && 10028 (iso_stream->iso_type == iso_type)){ 10029 btstack_linked_list_iterator_remove(&it); 10030 btstack_memory_hci_iso_stream_free(iso_stream); 10031 } 10032 } 10033 } 10034 10035 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10036 btstack_linked_list_iterator_t it; 10037 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10038 while (btstack_linked_list_iterator_has_next(&it)){ 10039 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10040 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10041 (iso_stream->group_id == group_id)){ 10042 btstack_linked_list_iterator_remove(&it); 10043 btstack_memory_hci_iso_stream_free(iso_stream); 10044 } 10045 } 10046 } 10047 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10048 btstack_linked_list_iterator_t it; 10049 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10050 while (btstack_linked_list_iterator_has_next(&it)){ 10051 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10052 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10053 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10054 } 10055 } 10056 } 10057 10058 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10059 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10060 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10061 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10062 return (sdu_len_offset + 2 + sdu_len) == size; 10063 } 10064 10065 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10066 if (iso_stream == NULL){ 10067 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10068 return; 10069 } 10070 10071 if (hci_stack->iso_packet_handler == NULL) { 10072 return; 10073 } 10074 10075 // parse header 10076 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10077 uint16_t data_total_length = little_endian_read_16(packet, 2); 10078 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10079 10080 // assert packet is complete 10081 if ((data_total_length + 4u) != size){ 10082 return; 10083 } 10084 10085 if ((pb_flag & 0x01) == 0){ 10086 if (pb_flag == 0x02){ 10087 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10088 if (hci_iso_sdu_complete(packet, size)) { 10089 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10090 } 10091 } else { 10092 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10093 if (size > sizeof(iso_stream->reassembly_buffer)){ 10094 return; 10095 } 10096 memcpy(iso_stream->reassembly_buffer, packet, size); 10097 // fix pb_flag 10098 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10099 iso_stream->reassembly_pos = size; 10100 } 10101 } else { 10102 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10103 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10104 if (ts_flag != 0){ 10105 return; 10106 } 10107 // append fragment 10108 if (iso_stream->reassembly_pos == 0){ 10109 return; 10110 } 10111 10112 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10113 // reset reassembly buffer 10114 iso_stream->reassembly_pos = 0; 10115 return; 10116 } 10117 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10118 iso_stream->reassembly_pos += data_total_length; 10119 10120 // deliver if last fragment and SDU complete 10121 if (pb_flag == 0x03){ 10122 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10123 // fix data_total_length 10124 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10125 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10126 } 10127 // reset reassembly buffer 10128 iso_stream->reassembly_pos = 0; 10129 } 10130 } 10131 } 10132 10133 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10134 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10135 uint16_t pos = 0; 10136 event[pos++] = HCI_EVENT_META_GAP; 10137 event[pos++] = 4 + (2 * big->num_bis); 10138 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10139 event[pos++] = status; 10140 event[pos++] = big->big_handle; 10141 event[pos++] = big->num_bis; 10142 uint8_t i; 10143 for (i=0;i<big->num_bis;i++){ 10144 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10145 pos += 2; 10146 } 10147 hci_emit_event(event, pos, 0); 10148 } 10149 10150 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10151 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10152 uint16_t pos = 0; 10153 event[pos++] = HCI_EVENT_META_GAP; 10154 event[pos++] = 4 + (2 * cig->num_cis); 10155 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10156 event[pos++] = status; 10157 event[pos++] = cig->cig_id; 10158 event[pos++] = cig->num_cis; 10159 uint8_t i; 10160 for (i=0;i<cig->num_cis;i++){ 10161 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10162 pos += 2; 10163 } 10164 hci_emit_event(event, pos, 0); 10165 } 10166 10167 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10168 uint16_t pos = 0; 10169 event[pos++] = HCI_EVENT_META_GAP; 10170 event[pos++] = 8; 10171 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10172 event[pos++] = status; 10173 event[pos++] = iso_stream->group_id; 10174 event[pos++] = iso_stream->stream_id; 10175 little_endian_store_16(event, pos, iso_stream->cis_handle); 10176 pos += 2; 10177 little_endian_store_16(event, pos, iso_stream->acl_handle); 10178 pos += 2; 10179 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10180 pos += 2; 10181 event[pos++] = iso_stream->number_of_subevents; 10182 event[pos++] = iso_stream->burst_number_c_to_p; 10183 event[pos++] = iso_stream->burst_number_p_to_c; 10184 event[pos++] = iso_stream->flush_timeout_c_to_p; 10185 event[pos++] = iso_stream->flush_timeout_p_to_c; 10186 return pos; 10187 } 10188 10189 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10190 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10191 // cache data before finalizing struct 10192 uint8_t event [17]; 10193 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10194 btstack_assert(pos <= sizeof(event)); 10195 if (status != ERROR_CODE_SUCCESS){ 10196 hci_iso_stream_finalize(iso_stream); 10197 } 10198 hci_emit_event(event, pos, 0); 10199 } 10200 10201 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10202 uint8_t event [4]; 10203 uint16_t pos = 0; 10204 event[pos++] = HCI_EVENT_META_GAP; 10205 event[pos++] = 2; 10206 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10207 event[pos++] = big->big_handle; 10208 hci_emit_event(event, pos, 0); 10209 } 10210 10211 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10212 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10213 uint16_t pos = 0; 10214 event[pos++] = HCI_EVENT_META_GAP; 10215 event[pos++] = 4; 10216 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10217 event[pos++] = status; 10218 event[pos++] = big_sync->big_handle; 10219 event[pos++] = big_sync->num_bis; 10220 uint8_t i; 10221 for (i=0;i<big_sync->num_bis;i++){ 10222 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10223 pos += 2; 10224 } 10225 hci_emit_event(event, pos, 0); 10226 } 10227 10228 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10229 uint8_t event [4]; 10230 uint16_t pos = 0; 10231 event[pos++] = HCI_EVENT_META_GAP; 10232 event[pos++] = 2; 10233 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10234 event[pos++] = big_handle; 10235 hci_emit_event(event, pos, 0); 10236 } 10237 10238 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10239 uint8_t event[6]; 10240 uint16_t pos = 0; 10241 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10242 event[pos++] = sizeof(event) - 2; 10243 event[pos++] = big->big_handle; 10244 event[pos++] = bis_index; 10245 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10246 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10247 } 10248 10249 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10250 uint8_t event[4]; 10251 uint16_t pos = 0; 10252 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10253 event[pos++] = sizeof(event) - 2; 10254 little_endian_store_16(event, pos, cis_con_handle); 10255 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10256 } 10257 10258 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10259 btstack_linked_list_iterator_t it; 10260 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10261 while (btstack_linked_list_iterator_has_next(&it)){ 10262 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10263 if ( big->big_handle == big_handle ) { 10264 return big; 10265 } 10266 } 10267 return NULL; 10268 } 10269 10270 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10271 btstack_linked_list_iterator_t it; 10272 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10273 while (btstack_linked_list_iterator_has_next(&it)){ 10274 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10275 if ( big_sync->big_handle == big_handle ) { 10276 return big_sync; 10277 } 10278 } 10279 return NULL; 10280 } 10281 10282 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10283 hci_stack->iso_packets_to_queue = num_packets; 10284 } 10285 10286 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10287 btstack_linked_list_iterator_t it; 10288 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10289 while (btstack_linked_list_iterator_has_next(&it)){ 10290 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10291 if ( cig->cig_id == cig_id ) { 10292 return cig; 10293 } 10294 } 10295 return NULL; 10296 } 10297 10298 static void hci_iso_notify_can_send_now(void){ 10299 10300 // BIG 10301 10302 btstack_linked_list_iterator_t it; 10303 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10304 while (btstack_linked_list_iterator_has_next(&it)){ 10305 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10306 // track number completed packet timestamps 10307 if (big->num_completed_timestamp_current_valid){ 10308 big->num_completed_timestamp_current_valid = false; 10309 if (big->num_completed_timestamp_previous_valid){ 10310 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10311 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10312 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10313 big->num_completed_timestamp_previous_ms); 10314 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10315 // to catch up, skip packet on all BIS 10316 uint8_t i; 10317 for (i=0;i<big->num_bis;i++){ 10318 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10319 if (iso_stream){ 10320 iso_stream->num_packets_to_skip++; 10321 } 10322 } 10323 } 10324 } 10325 big->num_completed_timestamp_previous_valid = true; 10326 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10327 } 10328 10329 if (big->can_send_now_requested){ 10330 // check if no outgoing iso packets pending and no can send now have to be emitted 10331 uint8_t i; 10332 bool can_send = true; 10333 uint8_t num_iso_queued_minimum = 0; 10334 for (i=0;i<big->num_bis;i++){ 10335 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10336 if (iso_stream == NULL) continue; 10337 // handle case where individual ISO packet was sent too late: 10338 // for each additionally queued packet, a new one needs to get skipped 10339 if (i==0){ 10340 num_iso_queued_minimum = iso_stream->num_packets_sent; 10341 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10342 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10343 iso_stream->num_packets_to_skip += num_packets_to_skip; 10344 iso_stream->num_packets_sent -= num_packets_to_skip; 10345 } 10346 // check if we can send now 10347 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10348 can_send = false; 10349 break; 10350 } 10351 } 10352 if (can_send){ 10353 // propagate can send now to individual streams 10354 big->can_send_now_requested = false; 10355 for (i=0;i<big->num_bis;i++){ 10356 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10357 iso_stream->emit_ready_to_send = true; 10358 } 10359 } 10360 } 10361 } 10362 10363 if (hci_stack->hci_packet_buffer_reserved) return; 10364 10365 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10366 while (btstack_linked_list_iterator_has_next(&it)){ 10367 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10368 // report bis ready 10369 uint8_t i; 10370 for (i=0;i<big->num_bis;i++){ 10371 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10372 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10373 iso_stream->emit_ready_to_send = false; 10374 hci_emit_bis_can_send_now(big, i); 10375 break; 10376 } 10377 } 10378 } 10379 10380 // CIS 10381 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10382 while (btstack_linked_list_iterator_has_next(&it)) { 10383 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10384 if ((iso_stream->can_send_now_requested) && 10385 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10386 iso_stream->can_send_now_requested = false; 10387 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10388 } 10389 } 10390 } 10391 10392 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10393 // make big handle unique and usuable for big and big sync 10394 if (hci_big_for_handle(big_handle) != NULL){ 10395 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10396 } 10397 if (hci_big_sync_for_handle(big_handle) != NULL){ 10398 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10399 } 10400 if (num_bis == 0){ 10401 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10402 } 10403 if (num_bis > MAX_NR_BIS){ 10404 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10405 } 10406 10407 // reserve ISO Streams 10408 uint8_t i; 10409 uint8_t status = ERROR_CODE_SUCCESS; 10410 for (i=0;i<num_bis;i++){ 10411 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10412 if (iso_stream == NULL) { 10413 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10414 break; 10415 } 10416 } 10417 10418 // free structs on error 10419 if (status != ERROR_CODE_SUCCESS){ 10420 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10421 } 10422 10423 return status; 10424 } 10425 10426 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10427 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10428 if (status != ERROR_CODE_SUCCESS){ 10429 return status; 10430 } 10431 10432 le_audio_big_t * big = storage; 10433 big->big_handle = big_params->big_handle; 10434 big->params = big_params; 10435 big->state = LE_AUDIO_BIG_STATE_CREATE; 10436 big->num_bis = big_params->num_bis; 10437 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10438 10439 hci_run(); 10440 10441 return ERROR_CODE_SUCCESS; 10442 } 10443 10444 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10445 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10446 if (status != ERROR_CODE_SUCCESS){ 10447 return status; 10448 } 10449 10450 le_audio_big_sync_t * big_sync = storage; 10451 big_sync->big_handle = big_sync_params->big_handle; 10452 big_sync->params = big_sync_params; 10453 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10454 big_sync->num_bis = big_sync_params->num_bis; 10455 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10456 10457 hci_run(); 10458 10459 return ERROR_CODE_SUCCESS; 10460 } 10461 10462 uint8_t gap_big_terminate(uint8_t big_handle){ 10463 le_audio_big_t * big = hci_big_for_handle(big_handle); 10464 if (big == NULL){ 10465 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10466 } 10467 switch (big->state){ 10468 case LE_AUDIO_BIG_STATE_CREATE: 10469 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10470 hci_emit_big_terminated(big); 10471 break; 10472 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10473 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10474 break; 10475 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10476 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10477 case LE_AUDIO_BIG_STATE_ACTIVE: 10478 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10479 hci_run(); 10480 break; 10481 default: 10482 return ERROR_CODE_COMMAND_DISALLOWED; 10483 } 10484 return ERROR_CODE_SUCCESS; 10485 } 10486 10487 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10488 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10489 if (big_sync == NULL){ 10490 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10491 } 10492 switch (big_sync->state){ 10493 case LE_AUDIO_BIG_STATE_CREATE: 10494 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10495 hci_emit_big_sync_stopped(big_handle); 10496 break; 10497 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10498 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10499 break; 10500 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10501 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10502 case LE_AUDIO_BIG_STATE_ACTIVE: 10503 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10504 hci_run(); 10505 break; 10506 default: 10507 return ERROR_CODE_COMMAND_DISALLOWED; 10508 } 10509 return ERROR_CODE_SUCCESS; 10510 } 10511 10512 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10513 le_audio_big_t * big = hci_big_for_handle(big_handle); 10514 if (big == NULL){ 10515 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10516 } 10517 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10518 return ERROR_CODE_COMMAND_DISALLOWED; 10519 } 10520 big->can_send_now_requested = true; 10521 hci_iso_notify_can_send_now(); 10522 return ERROR_CODE_SUCCESS; 10523 } 10524 10525 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10526 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10527 if (iso_stream == NULL){ 10528 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10529 } 10530 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10531 return ERROR_CODE_COMMAND_DISALLOWED; 10532 } 10533 iso_stream->can_send_now_requested = true; 10534 hci_iso_notify_can_send_now(); 10535 return ERROR_CODE_SUCCESS; 10536 } 10537 10538 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10539 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10540 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10541 } 10542 if (cig_params->num_cis == 0){ 10543 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10544 } 10545 if (cig_params->num_cis > MAX_NR_CIS){ 10546 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10547 } 10548 10549 // reserve ISO Streams 10550 uint8_t i; 10551 uint8_t status = ERROR_CODE_SUCCESS; 10552 for (i=0;i<cig_params->num_cis;i++){ 10553 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10554 if (iso_stream == NULL) { 10555 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10556 break; 10557 } 10558 } 10559 10560 // free structs on error 10561 if (status != ERROR_CODE_SUCCESS){ 10562 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10563 return status; 10564 } 10565 10566 le_audio_cig_t * cig = storage; 10567 cig->cig_id = cig_params->cig_id; 10568 cig->num_cis = cig_params->num_cis; 10569 cig->params = cig_params; 10570 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10571 for (i=0;i<cig->num_cis;i++){ 10572 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10573 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10574 cig->cis_setup_active[i] = false; 10575 cig->cis_established[i] = false; 10576 } 10577 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10578 10579 hci_run(); 10580 10581 return ERROR_CODE_SUCCESS; 10582 } 10583 10584 uint8_t gap_cig_remove(uint8_t cig_id){ 10585 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10586 if (cig == NULL){ 10587 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10588 } 10589 10590 // close active CIS 10591 uint8_t i; 10592 for (i=0;i<cig->num_cis;i++){ 10593 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10594 if (stream != NULL){ 10595 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10596 } 10597 } 10598 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10599 10600 hci_run(); 10601 10602 return ERROR_CODE_SUCCESS; 10603 } 10604 10605 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10606 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10607 if (cig == NULL){ 10608 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10609 } 10610 10611 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10612 return ERROR_CODE_COMMAND_DISALLOWED; 10613 } 10614 10615 // store ACL Connection Handles 10616 uint8_t i; 10617 for (i=0;i<cig->num_cis;i++){ 10618 // check that all con handles exist and store 10619 hci_con_handle_t cis_handle = cis_con_handles[i]; 10620 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10621 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10622 } 10623 uint8_t j; 10624 bool found = false; 10625 for (j=0;j<cig->num_cis;j++){ 10626 if (cig->cis_con_handles[j] == cis_handle){ 10627 cig->acl_con_handles[j] = acl_con_handles[j]; 10628 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10629 btstack_assert(iso_stream != NULL); 10630 iso_stream->acl_handle = acl_con_handles[j]; 10631 found = true; 10632 break; 10633 } 10634 } 10635 if (!found){ 10636 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10637 } 10638 } 10639 10640 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10641 hci_run(); 10642 10643 return ERROR_CODE_SUCCESS; 10644 } 10645 10646 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10647 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10648 if (iso_stream == NULL){ 10649 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10650 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10651 } 10652 10653 // set next state and continue 10654 iso_stream->state = state; 10655 hci_run(); 10656 return ERROR_CODE_SUCCESS; 10657 } 10658 10659 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10660 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10661 } 10662 10663 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10664 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10665 } 10666 10667 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10668 10669 // GAP Privacy - notify clients before random address update 10670 10671 static bool gap_privacy_client_all_ready(void){ 10672 // check if all ready 10673 btstack_linked_list_iterator_t it; 10674 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10675 while (btstack_linked_list_iterator_has_next(&it)) { 10676 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10677 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10678 return false; 10679 } 10680 } 10681 return true; 10682 } 10683 10684 static void gap_privacy_clients_handle_ready(void){ 10685 // clear 'ready' 10686 btstack_linked_list_iterator_t it; 10687 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10688 while (btstack_linked_list_iterator_has_next(&it)) { 10689 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10690 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10691 } 10692 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10693 hci_run(); 10694 } 10695 10696 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10697 btstack_linked_list_iterator_t it; 10698 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10699 while (btstack_linked_list_iterator_has_next(&it)) { 10700 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10701 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10702 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10703 (*client->callback)(client, new_random_address); 10704 } 10705 } 10706 if (gap_privacy_client_all_ready()){ 10707 gap_privacy_clients_handle_ready(); 10708 } 10709 } 10710 10711 void gap_privacy_client_register(gap_privacy_client_t * client){ 10712 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10713 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10714 } 10715 10716 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10717 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10718 if (gap_privacy_client_all_ready()){ 10719 gap_privacy_clients_handle_ready(); 10720 } 10721 } 10722 10723 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10724 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10725 } 10726 10727 #endif /* ENABLE_BLE */ 10728 10729 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10730 void hci_setup_test_connections_fuzz(void){ 10731 hci_connection_t * conn; 10732 10733 // default address: 66:55:44:33:00:01 10734 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10735 10736 // setup Controller info 10737 hci_stack->num_cmd_packets = 255; 10738 hci_stack->acl_packets_total_num = 255; 10739 10740 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10741 addr[5] = 0x01; 10742 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10743 conn->con_handle = addr[5]; 10744 conn->state = RECEIVED_CONNECTION_REQUEST; 10745 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10746 10747 // setup incoming Classic SCO connection with con handle 0x0002 10748 addr[5] = 0x02; 10749 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10750 conn->con_handle = addr[5]; 10751 conn->state = RECEIVED_CONNECTION_REQUEST; 10752 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10753 10754 // setup ready Classic ACL connection with con handle 0x0003 10755 addr[5] = 0x03; 10756 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10757 conn->con_handle = addr[5]; 10758 conn->state = OPEN; 10759 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10760 10761 // setup ready Classic SCO connection with con handle 0x0004 10762 addr[5] = 0x04; 10763 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10764 conn->con_handle = addr[5]; 10765 conn->state = OPEN; 10766 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10767 10768 // setup ready LE ACL connection with con handle 0x005 and public address 10769 addr[5] = 0x05; 10770 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10771 conn->con_handle = addr[5]; 10772 conn->state = OPEN; 10773 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10774 conn->sm_connection.sm_connection_encrypted = 1; 10775 } 10776 10777 void hci_free_connections_fuzz(void){ 10778 btstack_linked_list_iterator_t it; 10779 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10780 while (btstack_linked_list_iterator_has_next(&it)){ 10781 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10782 btstack_linked_list_iterator_remove(&it); 10783 btstack_memory_hci_connection_free(con); 10784 } 10785 } 10786 void hci_simulate_working_fuzz(void){ 10787 hci_stack->le_scanning_param_update = false; 10788 hci_init_done(); 10789 hci_stack->num_cmd_packets = 255; 10790 } 10791 #endif 10792