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