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 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 104 #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." 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 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 HAVE_SCO_TRANSPORT." 109 #endif 110 111 #define HCI_CONNECTION_TIMEOUT_MS 10000 112 113 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 114 #define HCI_RESET_RESEND_TIMEOUT_MS 200 115 #endif 116 117 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 118 #ifndef GAP_INQUIRY_MAX_NAME_LEN 119 #define GAP_INQUIRY_MAX_NAME_LEN 32 120 #endif 121 122 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 123 #define GAP_INQUIRY_DURATION_MIN 0x01 124 #define GAP_INQUIRY_DURATION_MAX 0x30 125 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 126 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 127 #define GAP_INQUIRY_STATE_IDLE 0x00 128 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 129 #define GAP_INQUIRY_STATE_ACTIVE 0x81 130 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 131 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 132 #define GAP_INQUIRY_STATE_PERIODIC 0x84 133 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 134 135 // GAP Remote Name Request 136 #define GAP_REMOTE_NAME_STATE_IDLE 0 137 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 138 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 139 140 // GAP Pairing 141 #define GAP_PAIRING_STATE_IDLE 0 142 #define GAP_PAIRING_STATE_SEND_PIN 1 143 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 144 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 145 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 146 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 147 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 148 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 149 150 // 151 // compact storage of relevant supported HCI Commands. 152 // X-Macro below provides enumeration and mapping table into the supported 153 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 154 // 155 156 // format: command name, byte offset, bit nr in 64-byte supported commands 157 // currently stored in 32-bit variable 158 #define SUPPORTED_HCI_COMMANDS \ 159 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 160 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 161 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 162 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 163 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 164 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 165 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 166 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 167 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 168 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 169 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 170 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 171 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 172 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 173 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 174 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 175 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 176 177 // enumerate supported commands 178 #define X(name, offset, bit) name, 179 enum { 180 SUPPORTED_HCI_COMMANDS 181 SUPPORTED_HCI_COMMANDS_COUNT 182 }; 183 #undef X 184 185 // prototypes 186 #ifdef ENABLE_CLASSIC 187 static void hci_update_scan_enable(void); 188 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 189 static int hci_local_ssp_activated(void); 190 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 191 static bool hci_ssp_supported(hci_connection_t * connection); 192 static void hci_notify_if_sco_can_send_now(void); 193 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 194 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 195 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 196 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 197 static void hci_connection_timestamp(hci_connection_t *connection); 198 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 199 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 200 #endif 201 202 static int hci_power_control_on(void); 203 static void hci_power_control_off(void); 204 static void hci_state_reset(void); 205 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 206 static void hci_emit_transport_packet_sent(void); 207 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 208 static void hci_emit_nr_connections_changed(void); 209 static void hci_emit_hci_open_failed(void); 210 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 211 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 212 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 213 static void hci_run(void); 214 static int hci_is_le_connection(hci_connection_t * connection); 215 216 #ifdef ENABLE_CLASSIC 217 static int hci_have_usb_transport(void); 218 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 219 #endif 220 221 #ifdef ENABLE_BLE 222 static void hci_whitelist_free(void); 223 #ifdef ENABLE_LE_CENTRAL 224 // called from test/ble_client/advertising_data_parser.c 225 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 226 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 227 static hci_connection_t * gap_get_outgoing_connection(void); 228 static void hci_le_scan_stop(void); 229 static bool hci_run_general_gap_le(void); 230 #endif 231 #ifdef ENABLE_LE_PERIPHERAL 232 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 233 static void hci_periodic_advertiser_list_free(void); 234 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 235 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 236 #endif /* ENABLE_LE_PERIPHERAL */ 237 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 238 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 239 hci_iso_stream_state_t state); 240 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 241 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 242 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 243 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 244 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 245 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 246 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 247 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 248 static void hci_iso_notify_can_send_now(void); 249 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 250 static void hci_emit_big_terminated(const le_audio_big_t * big); 251 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 252 static void hci_emit_big_sync_stopped(uint8_t big_handle); 253 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 254 static void 255 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status); 256 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 257 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 258 #endif /* ENABLE_BLE */ 259 260 // the STACK is here 261 #ifndef HAVE_MALLOC 262 static hci_stack_t hci_stack_static; 263 #endif 264 static hci_stack_t * hci_stack = NULL; 265 266 #ifdef ENABLE_CLASSIC 267 // default name 268 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 269 270 // test helper 271 static uint8_t disable_l2cap_timeouts = 0; 272 #endif 273 274 static bool btstack_is_null(uint8_t * data, uint16_t size){ 275 uint16_t i; 276 for (i=0; i < size ; i++){ 277 if (data[i] != 0) { 278 return false; 279 } 280 } 281 return true; 282 } 283 284 // reset connection state on create and on reconnect 285 // don't overwrite addr, con handle, role 286 static void hci_connection_init(hci_connection_t * conn){ 287 conn->authentication_flags = AUTH_FLAG_NONE; 288 conn->bonding_flags = 0; 289 conn->requested_security_level = LEVEL_0; 290 #ifdef ENABLE_CLASSIC 291 conn->request_role = HCI_ROLE_INVALID; 292 conn->sniff_subrating_max_latency = 0xffff; 293 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 294 conn->link_key_type = INVALID_LINK_KEY; 295 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 296 btstack_run_loop_set_timer_context(&conn->timeout, conn); 297 hci_connection_timestamp(conn); 298 #endif 299 conn->acl_recombination_length = 0; 300 conn->acl_recombination_pos = 0; 301 conn->num_packets_sent = 0; 302 303 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 304 #ifdef ENABLE_BLE 305 conn->le_phy_update_all_phys = 0xff; 306 #endif 307 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 308 conn->le_max_tx_octets = 27; 309 #endif 310 #ifdef ENABLE_CLASSIC_PAIRING_OOB 311 conn->classic_oob_c_192 = NULL; 312 conn->classic_oob_r_192 = NULL; 313 conn->classic_oob_c_256 = NULL; 314 conn->classic_oob_r_256 = NULL; 315 #endif 316 } 317 318 /** 319 * create connection for given address 320 * 321 * @return connection OR NULL, if no memory left 322 */ 323 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 324 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 325 326 hci_connection_t * conn = btstack_memory_hci_connection_get(); 327 if (!conn) return NULL; 328 hci_connection_init(conn); 329 330 bd_addr_copy(conn->address, addr); 331 conn->address_type = addr_type; 332 conn->con_handle = HCI_CON_HANDLE_INVALID; 333 conn->role = HCI_ROLE_INVALID; 334 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 335 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 336 #endif 337 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 338 339 return conn; 340 } 341 342 343 /** 344 * get le connection parameter range 345 * 346 * @return le connection parameter range struct 347 */ 348 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 349 *range = hci_stack->le_connection_parameter_range; 350 } 351 352 /** 353 * set le connection parameter range 354 * 355 */ 356 357 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 358 hci_stack->le_connection_parameter_range = *range; 359 } 360 361 /** 362 * @brief Test if connection parameters are inside in existing rage 363 * @param conn_interval_min (unit: 1.25ms) 364 * @param conn_interval_max (unit: 1.25ms) 365 * @param conn_latency 366 * @param supervision_timeout (unit: 10ms) 367 * @return 1 if included 368 */ 369 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){ 370 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 371 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 372 373 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 374 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 375 376 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 377 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 378 379 return 1; 380 } 381 382 /** 383 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 384 * @note: default: 1 385 * @param max_peripheral_connections 386 */ 387 #ifdef ENABLE_LE_PERIPHERAL 388 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 389 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 390 } 391 #endif 392 393 /** 394 * get hci connections iterator 395 * 396 * @return hci connections iterator 397 */ 398 399 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 400 btstack_linked_list_iterator_init(it, &hci_stack->connections); 401 } 402 403 /** 404 * get connection for a given handle 405 * 406 * @return connection OR NULL, if not found 407 */ 408 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 409 btstack_linked_list_iterator_t it; 410 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 411 while (btstack_linked_list_iterator_has_next(&it)){ 412 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 413 if ( item->con_handle == con_handle ) { 414 return item; 415 } 416 } 417 return NULL; 418 } 419 420 /** 421 * get connection for given address 422 * 423 * @return connection OR NULL, if not found 424 */ 425 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 426 btstack_linked_list_iterator_t it; 427 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 428 while (btstack_linked_list_iterator_has_next(&it)){ 429 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 430 if (connection->address_type != addr_type) continue; 431 if (memcmp(addr, connection->address, 6) != 0) continue; 432 return connection; 433 } 434 return NULL; 435 } 436 437 #ifdef ENABLE_CLASSIC 438 439 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 440 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 441 } 442 443 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 444 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 445 } 446 447 #ifdef ENABLE_SCO_OVER_HCI 448 static int hci_number_sco_connections(void){ 449 int connections = 0; 450 btstack_linked_list_iterator_t it; 451 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 452 while (btstack_linked_list_iterator_has_next(&it)){ 453 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 454 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 455 connections++; 456 } 457 return connections; 458 } 459 #endif 460 461 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 462 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 463 #ifdef HAVE_EMBEDDED_TICK 464 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 465 // connections might be timed out 466 hci_emit_l2cap_check_timeout(connection); 467 } 468 #else 469 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 470 // connections might be timed out 471 hci_emit_l2cap_check_timeout(connection); 472 } 473 #endif 474 } 475 476 static void hci_connection_timestamp(hci_connection_t *connection){ 477 #ifdef HAVE_EMBEDDED_TICK 478 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 479 #else 480 connection->timestamp = btstack_run_loop_get_time_ms(); 481 #endif 482 } 483 484 /** 485 * add authentication flags and reset timer 486 * @note: assumes classic connection 487 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 488 */ 489 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 490 bd_addr_t addr; 491 reverse_bd_addr(bd_addr, addr); 492 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 493 if (conn) { 494 connectionSetAuthenticationFlags(conn, flags); 495 hci_connection_timestamp(conn); 496 } 497 } 498 499 static bool hci_pairing_active(hci_connection_t * hci_connection){ 500 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 501 } 502 503 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 504 if (hci_pairing_active(hci_connection)) return; 505 if (ssp){ 506 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 507 } else { 508 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 509 } 510 // if we are initiator, we have sent an HCI Authenticate Request 511 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 512 513 // if we are responder, use minimal service security level as required level 514 if (!initiator){ 515 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); 516 } 517 518 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 519 520 uint8_t event[12]; 521 event[0] = GAP_EVENT_PAIRING_STARTED; 522 event[1] = 10; 523 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 524 reverse_bd_addr(hci_connection->address, &event[4]); 525 event[10] = (uint8_t) ssp; 526 event[11] = (uint8_t) initiator; 527 hci_emit_event(event, sizeof(event), 1); 528 } 529 530 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 531 hci_connection->requested_security_level = LEVEL_0; 532 if (!hci_pairing_active(hci_connection)) return; 533 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 534 #ifdef ENABLE_CLASSIC_PAIRING_OOB 535 hci_connection->classic_oob_c_192 = NULL; 536 hci_connection->classic_oob_r_192 = NULL; 537 hci_connection->classic_oob_c_256 = NULL; 538 hci_connection->classic_oob_r_256 = NULL; 539 #endif 540 log_info("pairing complete, status %02x", status); 541 542 uint8_t event[11]; 543 event[0] = GAP_EVENT_PAIRING_COMPLETE; 544 event[1] = 9; 545 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 546 reverse_bd_addr(hci_connection->address, &event[4]); 547 event[10] = status; 548 hci_emit_event(event, sizeof(event), 1); 549 550 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 551 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 552 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 553 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 554 hci_connection->bonding_status = status; 555 } 556 } 557 558 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 559 hci_connection_t * conn = hci_connection_for_handle(handle); 560 if (!conn) return false; 561 return hci_pairing_active(conn); 562 } 563 564 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 565 if (!hci_stack->link_key_db) return; 566 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 567 hci_stack->link_key_db->delete_link_key(addr); 568 } 569 570 void gap_store_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; 572 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 573 hci_stack->link_key_db->put_link_key(addr, link_key, type); 574 } 575 576 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 577 if (!hci_stack->link_key_db) return false; 578 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 579 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 580 return result; 581 } 582 583 void gap_delete_all_link_keys(void){ 584 bd_addr_t addr; 585 link_key_t link_key; 586 link_key_type_t type; 587 btstack_link_key_iterator_t it; 588 int ok = gap_link_key_iterator_init(&it); 589 if (!ok) { 590 log_error("could not initialize iterator"); 591 return; 592 } 593 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 594 gap_drop_link_key_for_bd_addr(addr); 595 } 596 gap_link_key_iterator_done(&it); 597 } 598 599 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 600 if (!hci_stack->link_key_db) return 0; 601 if (!hci_stack->link_key_db->iterator_init) return 0; 602 return hci_stack->link_key_db->iterator_init(it); 603 } 604 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){ 605 if (!hci_stack->link_key_db) return 0; 606 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 607 } 608 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 609 if (!hci_stack->link_key_db) return; 610 hci_stack->link_key_db->iterator_done(it); 611 } 612 #endif 613 614 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 615 switch (address_type){ 616 case BD_ADDR_TYPE_LE_PUBLIC: 617 case BD_ADDR_TYPE_LE_RANDOM: 618 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 619 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 620 return true; 621 default: 622 return false; 623 } 624 } 625 626 static int hci_is_le_connection(hci_connection_t * connection){ 627 return hci_is_le_connection_type(connection->address_type); 628 } 629 630 /** 631 * count connections 632 */ 633 static int nr_hci_connections(void){ 634 int count = 0; 635 btstack_linked_item_t *it; 636 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 637 count++; 638 } 639 return count; 640 } 641 642 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 643 644 unsigned int num_packets_sent_classic = 0; 645 unsigned int num_packets_sent_le = 0; 646 647 btstack_linked_item_t *it; 648 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 649 hci_connection_t * connection = (hci_connection_t *) it; 650 if (hci_is_le_connection(connection)){ 651 num_packets_sent_le += connection->num_packets_sent; 652 } 653 if (connection->address_type == BD_ADDR_TYPE_ACL){ 654 num_packets_sent_classic += connection->num_packets_sent; 655 } 656 } 657 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 658 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 659 int free_slots_le = 0; 660 661 if (free_slots_classic < 0){ 662 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); 663 return 0; 664 } 665 666 if (hci_stack->le_acl_packets_total_num){ 667 // if we have LE slots, they are used 668 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 669 if (free_slots_le < 0){ 670 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); 671 return 0; 672 } 673 } else { 674 // otherwise, classic slots are used for LE, too 675 free_slots_classic -= num_packets_sent_le; 676 if (free_slots_classic < 0){ 677 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); 678 return 0; 679 } 680 } 681 682 switch (address_type){ 683 case BD_ADDR_TYPE_UNKNOWN: 684 log_error("hci_number_free_acl_slots: unknown address type"); 685 return 0; 686 687 case BD_ADDR_TYPE_ACL: 688 return (uint16_t) free_slots_classic; 689 690 default: 691 if (hci_stack->le_acl_packets_total_num > 0){ 692 return (uint16_t) free_slots_le; 693 } 694 return (uint16_t) free_slots_classic; 695 } 696 } 697 698 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 699 // get connection type 700 hci_connection_t * connection = hci_connection_for_handle(con_handle); 701 if (!connection){ 702 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 703 return 0; 704 } 705 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 706 } 707 708 #ifdef ENABLE_CLASSIC 709 static int hci_number_free_sco_slots(void){ 710 unsigned int num_sco_packets_sent = 0; 711 btstack_linked_item_t *it; 712 if (hci_stack->synchronous_flow_control_enabled){ 713 // explicit flow control 714 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 715 hci_connection_t * connection = (hci_connection_t *) it; 716 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 717 num_sco_packets_sent += connection->num_packets_sent; 718 } 719 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 720 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 721 return 0; 722 } 723 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 724 } else { 725 // implicit flow control -- TODO 726 int num_ready = 0; 727 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 728 hci_connection_t * connection = (hci_connection_t *) it; 729 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 730 if (connection->sco_tx_ready == 0) continue; 731 num_ready++; 732 } 733 return num_ready; 734 } 735 } 736 #endif 737 738 // only used to send HCI Host Number Completed Packets 739 static int hci_can_send_comand_packet_transport(void){ 740 if (hci_stack->hci_packet_buffer_reserved) return 0; 741 742 // check for async hci transport implementations 743 if (hci_stack->hci_transport->can_send_packet_now){ 744 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 745 return 0; 746 } 747 } 748 return 1; 749 } 750 751 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 752 bool hci_can_send_command_packet_now(void){ 753 if (hci_can_send_comand_packet_transport() == 0) return false; 754 return hci_stack->num_cmd_packets > 0u; 755 } 756 757 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 758 // check for async hci transport implementations 759 if (!hci_stack->hci_transport->can_send_packet_now) return true; 760 return hci_stack->hci_transport->can_send_packet_now(packet_type); 761 } 762 763 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 764 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 765 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 766 } 767 768 bool hci_can_send_acl_le_packet_now(void){ 769 if (hci_stack->hci_packet_buffer_reserved) return false; 770 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 771 } 772 773 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 774 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 775 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 776 } 777 778 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 779 if (hci_stack->hci_packet_buffer_reserved) return false; 780 return hci_can_send_prepared_acl_packet_now(con_handle); 781 } 782 783 #ifdef ENABLE_CLASSIC 784 bool hci_can_send_acl_classic_packet_now(void){ 785 if (hci_stack->hci_packet_buffer_reserved) return false; 786 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 787 } 788 789 bool hci_can_send_prepared_sco_packet_now(void){ 790 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 791 if (hci_have_usb_transport()){ 792 return hci_stack->sco_can_send_now; 793 } else { 794 return hci_number_free_sco_slots() > 0; 795 } 796 } 797 798 bool hci_can_send_sco_packet_now(void){ 799 if (hci_stack->hci_packet_buffer_reserved) return false; 800 return hci_can_send_prepared_sco_packet_now(); 801 } 802 803 void hci_request_sco_can_send_now_event(void){ 804 hci_stack->sco_waiting_for_can_send_now = 1; 805 hci_notify_if_sco_can_send_now(); 806 } 807 #endif 808 809 // used for internal checks in l2cap.c 810 bool hci_is_packet_buffer_reserved(void){ 811 return hci_stack->hci_packet_buffer_reserved; 812 } 813 814 // reserves outgoing packet buffer. 815 // @return 1 if successful 816 bool hci_reserve_packet_buffer(void){ 817 if (hci_stack->hci_packet_buffer_reserved) { 818 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 819 return false; 820 } 821 hci_stack->hci_packet_buffer_reserved = true; 822 return true; 823 } 824 825 void hci_release_packet_buffer(void){ 826 hci_stack->hci_packet_buffer_reserved = false; 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; 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 hci_emit_transport_packet_sent(); 964 } 965 966 return status; 967 } 968 969 // pre: caller has reserved the packet buffer 970 uint8_t hci_send_acl_packet_buffer(int size){ 971 btstack_assert(hci_stack->hci_packet_buffer_reserved); 972 973 uint8_t * packet = hci_stack->hci_packet_buffer; 974 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 975 976 // check for free places on Bluetooth module 977 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 978 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 979 hci_release_packet_buffer(); 980 hci_emit_transport_packet_sent(); 981 return BTSTACK_ACL_BUFFERS_FULL; 982 } 983 984 hci_connection_t *connection = hci_connection_for_handle( con_handle); 985 if (!connection) { 986 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 987 hci_release_packet_buffer(); 988 hci_emit_transport_packet_sent(); 989 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 990 } 991 992 #ifdef ENABLE_CLASSIC 993 hci_connection_timestamp(connection); 994 #endif 995 996 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 997 998 // setup data 999 hci_stack->acl_fragmentation_total_size = size; 1000 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1001 1002 return hci_send_acl_packet_fragments(connection); 1003 } 1004 1005 #ifdef ENABLE_CLASSIC 1006 // pre: caller has reserved the packet buffer 1007 uint8_t hci_send_sco_packet_buffer(int size){ 1008 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1009 1010 uint8_t * packet = hci_stack->hci_packet_buffer; 1011 1012 // skip checks in loopback mode 1013 if (!hci_stack->loopback_mode){ 1014 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1015 1016 // check for free places on Bluetooth module 1017 if (!hci_can_send_prepared_sco_packet_now()) { 1018 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1019 hci_release_packet_buffer(); 1020 hci_emit_transport_packet_sent(); 1021 return BTSTACK_ACL_BUFFERS_FULL; 1022 } 1023 1024 // track send packet in connection struct 1025 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1026 if (!connection) { 1027 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1028 hci_release_packet_buffer(); 1029 hci_emit_transport_packet_sent(); 1030 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1031 } 1032 1033 if (hci_have_usb_transport()){ 1034 // token used 1035 hci_stack->sco_can_send_now = false; 1036 } else { 1037 if (hci_stack->synchronous_flow_control_enabled){ 1038 connection->num_packets_sent++; 1039 } else { 1040 connection->sco_tx_ready--; 1041 } 1042 } 1043 } 1044 1045 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1046 1047 #ifdef HAVE_SCO_TRANSPORT 1048 hci_stack->sco_transport->send_packet(packet, size); 1049 hci_release_packet_buffer(); 1050 hci_emit_transport_packet_sent(); 1051 1052 return 0; 1053 #else 1054 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1055 if (hci_transport_synchronous()){ 1056 hci_release_packet_buffer(); 1057 hci_emit_transport_packet_sent(); 1058 } 1059 1060 if (err != 0){ 1061 return ERROR_CODE_HARDWARE_FAILURE; 1062 } 1063 return ERROR_CODE_SUCCESS; 1064 #endif 1065 } 1066 #endif 1067 1068 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1069 static uint8_t hci_send_iso_packet_fragments(void){ 1070 1071 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1072 uint8_t status = ERROR_CODE_SUCCESS; 1073 // multiple packets could be send on a synchronous HCI transport 1074 while (true){ 1075 1076 // get current data 1077 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1078 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1079 bool more_fragments = false; 1080 1081 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1082 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1083 more_fragments = true; 1084 current_iso_data_packet_length = max_iso_data_packet_length; 1085 } 1086 1087 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1088 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1089 uint8_t pb_flags; 1090 if (iso_header_pos == 0u){ 1091 // first fragment, keep TS field 1092 pb_flags = more_fragments ? 0x00 : 0x02; 1093 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1094 } else { 1095 // later fragment, drop TS field 1096 pb_flags = more_fragments ? 0x01 : 0x03; 1097 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1098 } 1099 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1100 1101 // update header len 1102 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1103 1104 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1105 if (more_fragments){ 1106 // update start of next fragment to send 1107 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1108 } else { 1109 // done 1110 hci_stack->iso_fragmentation_pos = 0; 1111 hci_stack->iso_fragmentation_total_size = 0; 1112 } 1113 1114 // send packet 1115 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1116 const int size = current_iso_data_packet_length + 4; 1117 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1118 hci_stack->iso_fragmentation_tx_active = true; 1119 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1120 if (err != 0){ 1121 // no error from HCI Transport expected 1122 status = ERROR_CODE_HARDWARE_FAILURE; 1123 } 1124 1125 // done yet? 1126 if (!more_fragments) break; 1127 1128 // can send more? 1129 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1130 } 1131 1132 // release buffer now for synchronous transport 1133 if (hci_transport_synchronous()){ 1134 hci_stack->iso_fragmentation_tx_active = false; 1135 hci_release_packet_buffer(); 1136 hci_emit_transport_packet_sent(); 1137 } 1138 1139 return status; 1140 } 1141 1142 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1143 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1144 1145 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1146 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1147 if (iso_stream == NULL){ 1148 hci_release_packet_buffer(); 1149 hci_iso_notify_can_send_now(); 1150 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1151 } 1152 1153 // TODO: check for space on controller 1154 1155 // skip iso packets if needed 1156 if (iso_stream->num_packets_to_skip > 0){ 1157 iso_stream->num_packets_to_skip--; 1158 // pretend it was processed and trigger next one 1159 hci_release_packet_buffer(); 1160 hci_iso_notify_can_send_now(); 1161 return ERROR_CODE_SUCCESS; 1162 } 1163 1164 // track outgoing packet sent 1165 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1166 iso_stream->num_packets_sent++; 1167 1168 // setup data 1169 hci_stack->iso_fragmentation_total_size = size; 1170 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1171 1172 return hci_send_iso_packet_fragments(); 1173 } 1174 #endif 1175 1176 static void acl_handler(uint8_t *packet, uint16_t size){ 1177 1178 // get info 1179 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1180 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1181 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1182 uint16_t acl_length = READ_ACL_LENGTH(packet); 1183 1184 // ignore non-registered handle 1185 if (!conn){ 1186 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1187 return; 1188 } 1189 1190 // assert packet is complete 1191 if ((acl_length + 4u) != size){ 1192 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1193 return; 1194 } 1195 1196 #ifdef ENABLE_CLASSIC 1197 // update idle timestamp 1198 hci_connection_timestamp(conn); 1199 #endif 1200 1201 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1202 hci_stack->host_completed_packets = 1; 1203 conn->num_packets_completed++; 1204 #endif 1205 1206 // handle different packet types 1207 switch (acl_flags & 0x03u) { 1208 1209 case 0x01: // continuation fragment 1210 1211 // sanity checks 1212 if (conn->acl_recombination_pos == 0u) { 1213 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1214 return; 1215 } 1216 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1217 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1218 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1219 conn->acl_recombination_pos = 0; 1220 return; 1221 } 1222 1223 // append fragment payload (header already stored) 1224 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1225 &packet[4], acl_length); 1226 conn->acl_recombination_pos += acl_length; 1227 1228 // forward complete L2CAP packet if complete. 1229 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1230 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1231 // reset recombination buffer 1232 conn->acl_recombination_length = 0; 1233 conn->acl_recombination_pos = 0; 1234 } 1235 break; 1236 1237 case 0x02: { // first fragment 1238 1239 // sanity check 1240 if (conn->acl_recombination_pos) { 1241 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1242 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1243 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1244 } 1245 conn->acl_recombination_pos = 0; 1246 } 1247 1248 // peek into L2CAP packet! 1249 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1250 1251 // compare fragment size to L2CAP packet size 1252 if (acl_length >= (l2cap_length + 4u)){ 1253 // forward fragment as L2CAP packet 1254 hci_emit_acl_packet(packet, acl_length + 4u); 1255 } else { 1256 1257 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1258 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1259 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1260 return; 1261 } 1262 1263 // store first fragment and tweak acl length for complete package 1264 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1265 packet, acl_length + 4u); 1266 conn->acl_recombination_pos = acl_length + 4u; 1267 conn->acl_recombination_length = l2cap_length; 1268 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1269 } 1270 break; 1271 1272 } 1273 default: 1274 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1275 return; 1276 } 1277 1278 // execute main loop 1279 hci_run(); 1280 } 1281 1282 static void hci_connection_stop_timer(hci_connection_t * conn){ 1283 btstack_run_loop_remove_timer(&conn->timeout); 1284 #ifdef ENABLE_CLASSIC 1285 btstack_run_loop_remove_timer(&conn->timeout_sco); 1286 #endif 1287 } 1288 1289 static void hci_shutdown_connection(hci_connection_t *conn){ 1290 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1291 1292 #ifdef ENABLE_CLASSIC 1293 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1294 bd_addr_type_t addr_type = conn->address_type; 1295 #endif 1296 #ifdef HAVE_SCO_TRANSPORT 1297 hci_con_handle_t con_handle = conn->con_handle; 1298 #endif 1299 #endif 1300 1301 hci_connection_stop_timer(conn); 1302 1303 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1304 btstack_memory_hci_connection_free( conn ); 1305 1306 // now it's gone 1307 hci_emit_nr_connections_changed(); 1308 1309 #ifdef ENABLE_CLASSIC 1310 #ifdef ENABLE_SCO_OVER_HCI 1311 // update SCO 1312 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1313 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1314 } 1315 #endif 1316 #ifdef HAVE_SCO_TRANSPORT 1317 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1318 hci_stack->sco_transport->close(con_handle); 1319 } 1320 #endif 1321 #endif 1322 } 1323 1324 #ifdef ENABLE_CLASSIC 1325 1326 static const uint16_t packet_type_sizes[] = { 1327 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1328 HCI_ACL_DH1_SIZE, 0, 0, 0, 1329 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1330 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1331 }; 1332 static const uint8_t packet_type_feature_requirement_bit[] = { 1333 0, // 3 slot packets 1334 1, // 5 slot packets 1335 25, // EDR 2 mpbs 1336 26, // EDR 3 mbps 1337 39, // 3 slot EDR packts 1338 40, // 5 slot EDR packet 1339 }; 1340 static const uint16_t packet_type_feature_packet_mask[] = { 1341 0x0f00, // 3 slot packets 1342 0xf000, // 5 slot packets 1343 0x1102, // EDR 2 mpbs 1344 0x2204, // EDR 3 mbps 1345 0x0300, // 3 slot EDR packts 1346 0x3000, // 5 slot EDR packet 1347 }; 1348 1349 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1350 // enable packet types based on size 1351 uint16_t packet_types = 0; 1352 unsigned int i; 1353 for (i=0;i<16;i++){ 1354 if (packet_type_sizes[i] == 0) continue; 1355 if (packet_type_sizes[i] <= buffer_size){ 1356 packet_types |= 1 << i; 1357 } 1358 } 1359 // disable packet types due to missing local supported features 1360 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1361 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1362 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1363 if (feature_set) continue; 1364 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1365 packet_types &= ~packet_type_feature_packet_mask[i]; 1366 } 1367 // flip bits for "may not be used" 1368 packet_types ^= 0x3306; 1369 return packet_types; 1370 } 1371 1372 uint16_t hci_usable_acl_packet_types(void){ 1373 return hci_stack->packet_types; 1374 } 1375 #endif 1376 1377 uint8_t* hci_get_outgoing_packet_buffer(void){ 1378 // hci packet buffer is >= acl data packet length 1379 return hci_stack->hci_packet_buffer; 1380 } 1381 1382 uint16_t hci_max_acl_data_packet_length(void){ 1383 return hci_stack->acl_data_packet_length; 1384 } 1385 1386 #ifdef ENABLE_CLASSIC 1387 bool hci_extended_sco_link_supported(void){ 1388 // No. 31, byte 3, bit 7 1389 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1390 } 1391 #endif 1392 1393 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1394 // No. 54, byte 6, bit 6 1395 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1396 } 1397 1398 #ifdef ENABLE_CLASSIC 1399 static int gap_ssp_supported(void){ 1400 // No. 51, byte 6, bit 3 1401 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1402 } 1403 #endif 1404 1405 static int hci_classic_supported(void){ 1406 #ifdef ENABLE_CLASSIC 1407 // No. 37, byte 4, bit 5, = No BR/EDR Support 1408 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1409 #else 1410 return 0; 1411 #endif 1412 } 1413 1414 static int hci_le_supported(void){ 1415 #ifdef ENABLE_BLE 1416 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1417 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1418 #else 1419 return 0; 1420 #endif 1421 } 1422 1423 static bool hci_command_supported(uint8_t command_index){ 1424 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1425 } 1426 1427 #ifdef ENABLE_BLE 1428 1429 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1430 static bool hci_extended_advertising_supported(void){ 1431 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1432 } 1433 #endif 1434 1435 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1436 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1437 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1438 } else { 1439 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1440 } 1441 } 1442 1443 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1444 *addr_type = hci_stack->le_own_addr_type; 1445 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1446 } 1447 1448 #ifdef ENABLE_LE_PERIPHERAL 1449 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1450 *addr_type = hci_stack->le_advertisements_own_addr_type; 1451 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1452 }; 1453 #endif 1454 1455 #ifdef ENABLE_LE_CENTRAL 1456 1457 /** 1458 * @brief Get own addr type and address used for LE connections (Central) 1459 */ 1460 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1461 *addr_type = hci_stack->le_connection_own_addr_type; 1462 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1463 } 1464 1465 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1466 1467 uint16_t offset = 3; 1468 uint8_t num_reports = packet[offset]; 1469 offset += 1; 1470 1471 uint16_t i; 1472 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1473 for (i=0; (i<num_reports) && (offset < size);i++){ 1474 // sanity checks on data_length: 1475 uint8_t data_length = packet[offset + 8]; 1476 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1477 if ((offset + 9u + data_length + 1u) > size) return; 1478 // setup event 1479 uint8_t event_size = 10u + data_length; 1480 uint16_t pos = 0; 1481 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1482 event[pos++] = event_size; 1483 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1484 offset += 8; 1485 pos += 8; 1486 event[pos++] = packet[offset + 1 + data_length]; // rssi 1487 event[pos++] = data_length; 1488 offset++; 1489 (void)memcpy(&event[pos], &packet[offset], data_length); 1490 pos += data_length; 1491 offset += data_length + 1u; // rssi 1492 hci_emit_event(event, pos, 1); 1493 } 1494 } 1495 1496 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1497 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1498 uint16_t offset = 3; 1499 uint8_t num_reports = packet[offset++]; 1500 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1501 uint8_t i; 1502 for (i=0; (i<num_reports) && (offset < size);i++){ 1503 // sanity checks on data_length: 1504 uint16_t data_length = packet[offset + 23]; 1505 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1506 if ((offset + 24u + data_length) > size) return; 1507 uint16_t event_type = little_endian_read_16(packet, offset); 1508 offset += 2; 1509 if ((event_type & 0x10) != 0) { 1510 // setup legacy event 1511 uint8_t legacy_event_type; 1512 switch (event_type){ 1513 case 0b0010011: 1514 // ADV_IND 1515 legacy_event_type = 0; 1516 break; 1517 case 0b0010101: 1518 // ADV_DIRECT_IND 1519 legacy_event_type = 1; 1520 break; 1521 case 0b0010010: 1522 // ADV_SCAN_IND 1523 legacy_event_type = 2; 1524 break; 1525 case 0b0010000: 1526 // ADV_NONCONN_IND 1527 legacy_event_type = 3; 1528 break; 1529 case 0b0011011: 1530 case 0b0011010: 1531 // SCAN_RSP 1532 legacy_event_type = 4; 1533 break; 1534 default: 1535 legacy_event_type = 0; 1536 break; 1537 } 1538 uint16_t pos = 0; 1539 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1540 event[pos++] = 10u + data_length; 1541 event[pos++] = legacy_event_type; 1542 // copy address type + address 1543 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1544 offset += 7; 1545 pos += 7; 1546 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1547 offset += 4; 1548 // copy rssi 1549 event[pos++] = packet[offset++]; 1550 // skip periodic advertising interval and direct address 1551 offset += 9; 1552 // copy data len + data; 1553 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1554 pos += 1 +data_length; 1555 offset += 1+ data_length; 1556 hci_emit_event(event, pos, 1); 1557 } else { 1558 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1559 uint8_t report_len = 24 + data_length; 1560 event[1] = report_len; 1561 little_endian_store_16(event, 2, event_type); 1562 memcpy(&event[4], &packet[offset], report_len); 1563 offset += report_len; 1564 hci_emit_event(event, 2 + report_len, 1); 1565 } 1566 } 1567 } 1568 #endif 1569 1570 #endif 1571 #endif 1572 1573 #ifdef ENABLE_BLE 1574 #ifdef ENABLE_LE_PERIPHERAL 1575 static void hci_update_advertisements_enabled_for_current_roles(void){ 1576 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1577 // get number of active le slave connections 1578 int num_slave_connections = 0; 1579 btstack_linked_list_iterator_t it; 1580 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1581 while (btstack_linked_list_iterator_has_next(&it)){ 1582 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1583 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1584 if (con->state != OPEN) continue; 1585 if (con->role != HCI_ROLE_SLAVE) continue; 1586 if (!hci_is_le_connection(con)) continue; 1587 num_slave_connections++; 1588 } 1589 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1590 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1591 } else { 1592 hci_stack->le_advertisements_enabled_for_current_roles = false; 1593 } 1594 } 1595 #endif 1596 #endif 1597 1598 #ifdef ENABLE_CLASSIC 1599 static void gap_run_set_local_name(void){ 1600 hci_reserve_packet_buffer(); 1601 uint8_t * packet = hci_stack->hci_packet_buffer; 1602 // construct HCI Command and send 1603 uint16_t opcode = hci_write_local_name.opcode; 1604 hci_stack->last_cmd_opcode = opcode; 1605 packet[0] = opcode & 0xff; 1606 packet[1] = opcode >> 8; 1607 packet[2] = DEVICE_NAME_LEN; 1608 memset(&packet[3], 0, DEVICE_NAME_LEN); 1609 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1610 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1611 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1612 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1613 // expand '00:00:00:00:00:00' in name with bd_addr 1614 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1615 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1616 } 1617 1618 static void gap_run_set_eir_data(void){ 1619 hci_reserve_packet_buffer(); 1620 uint8_t * packet = hci_stack->hci_packet_buffer; 1621 // construct HCI Command in-place and send 1622 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1623 hci_stack->last_cmd_opcode = opcode; 1624 uint16_t offset = 0; 1625 packet[offset++] = opcode & 0xff; 1626 packet[offset++] = opcode >> 8; 1627 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1628 packet[offset++] = 0; // FEC not required 1629 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1630 if (hci_stack->eir_data){ 1631 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1632 ad_context_t context; 1633 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1634 uint8_t data_type = ad_iterator_get_data_type(&context); 1635 uint8_t size = ad_iterator_get_data_len(&context); 1636 const uint8_t *data = ad_iterator_get_data(&context); 1637 // copy item 1638 packet[offset++] = size + 1; 1639 packet[offset++] = data_type; 1640 memcpy(&packet[offset], data, size); 1641 // update name item 1642 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1643 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1644 } 1645 offset += size; 1646 } 1647 } else { 1648 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1649 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1650 packet[offset++] = bytes_to_copy + 1; 1651 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1652 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1653 // expand '00:00:00:00:00:00' in name with bd_addr 1654 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1655 } 1656 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1657 } 1658 1659 static void hci_run_gap_tasks_classic(void){ 1660 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1661 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1662 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1663 return; 1664 } 1665 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1666 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1667 gap_run_set_local_name(); 1668 return; 1669 } 1670 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1671 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1672 gap_run_set_eir_data(); 1673 return; 1674 } 1675 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1676 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1677 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1678 return; 1679 } 1680 // write page scan activity 1681 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1682 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1683 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1684 return; 1685 } 1686 // write page scan type 1687 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1688 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1689 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1690 return; 1691 } 1692 // write page timeout 1693 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1694 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1695 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1696 return; 1697 } 1698 // send scan enable 1699 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1700 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1701 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1702 return; 1703 } 1704 // send write scan activity 1705 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1706 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1707 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1708 return; 1709 } 1710 } 1711 #endif 1712 1713 #ifndef HAVE_HOST_CONTROLLER_API 1714 1715 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1716 if (!hci_stack->config) return 0; 1717 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1718 // Limit baud rate for Broadcom chipsets to 3 mbps 1719 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1720 baud_rate = 3000000; 1721 } 1722 return baud_rate; 1723 } 1724 1725 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1726 UNUSED(ds); 1727 1728 switch (hci_stack->substate){ 1729 case HCI_INIT_W4_SEND_RESET: 1730 log_info("Resend HCI Reset"); 1731 hci_stack->substate = HCI_INIT_SEND_RESET; 1732 hci_stack->num_cmd_packets = 1; 1733 hci_run(); 1734 break; 1735 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1736 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1737 if (hci_stack->hci_transport->reset_link){ 1738 hci_stack->hci_transport->reset_link(); 1739 } 1740 1741 /* fall through */ 1742 1743 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1744 log_info("Resend HCI Reset - CSR Warm Boot"); 1745 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1746 hci_stack->num_cmd_packets = 1; 1747 hci_run(); 1748 break; 1749 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1750 if (hci_stack->hci_transport->set_baudrate){ 1751 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1752 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1753 hci_stack->hci_transport->set_baudrate(baud_rate); 1754 } 1755 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1756 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1757 if (hci_stack->hci_transport->reset_link){ 1758 log_info("Link Reset"); 1759 hci_stack->hci_transport->reset_link(); 1760 } 1761 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1762 hci_run(); 1763 } 1764 break; 1765 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1766 // otherwise continue 1767 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1768 hci_send_cmd(&hci_read_local_supported_commands); 1769 break; 1770 default: 1771 break; 1772 } 1773 } 1774 #endif 1775 1776 static void hci_initializing_next_state(void){ 1777 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1778 } 1779 1780 static void hci_init_done(void){ 1781 // done. tell the app 1782 log_info("hci_init_done -> HCI_STATE_WORKING"); 1783 hci_stack->state = HCI_STATE_WORKING; 1784 hci_emit_state(); 1785 } 1786 1787 // assumption: hci_can_send_command_packet_now() == true 1788 static void hci_initializing_run(void){ 1789 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1790 1791 if (!hci_can_send_command_packet_now()) return; 1792 1793 #ifndef HAVE_HOST_CONTROLLER_API 1794 bool need_baud_change = hci_stack->config 1795 && hci_stack->chipset 1796 && hci_stack->chipset->set_baudrate_command 1797 && hci_stack->hci_transport->set_baudrate 1798 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1799 #endif 1800 1801 switch (hci_stack->substate){ 1802 case HCI_INIT_SEND_RESET: 1803 hci_state_reset(); 1804 1805 #ifndef HAVE_HOST_CONTROLLER_API 1806 // prepare reset if command complete not received in 100ms 1807 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1808 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1809 btstack_run_loop_add_timer(&hci_stack->timeout); 1810 #endif 1811 // send command 1812 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1813 hci_send_cmd(&hci_reset); 1814 break; 1815 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1816 hci_send_cmd(&hci_read_local_version_information); 1817 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1818 break; 1819 1820 #ifndef HAVE_HOST_CONTROLLER_API 1821 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1822 hci_state_reset(); 1823 // prepare reset if command complete not received in 100ms 1824 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1825 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1826 btstack_run_loop_add_timer(&hci_stack->timeout); 1827 // send command 1828 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1829 hci_send_cmd(&hci_reset); 1830 break; 1831 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1832 hci_state_reset(); 1833 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1834 hci_send_cmd(&hci_reset); 1835 break; 1836 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1837 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1838 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1839 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1840 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1841 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1842 break; 1843 } 1844 case HCI_INIT_SET_BD_ADDR: 1845 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1846 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1847 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1848 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1849 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1850 break; 1851 case HCI_INIT_SEND_READ_LOCAL_NAME: 1852 #ifdef ENABLE_CLASSIC 1853 hci_send_cmd(&hci_read_local_name); 1854 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1855 break; 1856 #endif 1857 /* fall through */ 1858 1859 case HCI_INIT_SEND_BAUD_CHANGE: 1860 if (need_baud_change) { 1861 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1862 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1863 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1864 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1865 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1866 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1867 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1868 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1869 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1870 btstack_run_loop_add_timer(&hci_stack->timeout); 1871 } 1872 break; 1873 } 1874 1875 /* fall through */ 1876 1877 case HCI_INIT_CUSTOM_INIT: 1878 // Custom initialization 1879 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1880 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1881 bool send_cmd = false; 1882 switch (hci_stack->chipset_result){ 1883 case BTSTACK_CHIPSET_VALID_COMMAND: 1884 send_cmd = true; 1885 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1886 break; 1887 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1888 send_cmd = true; 1889 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1890 log_info("CSR Warm Boot"); 1891 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1892 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1893 btstack_run_loop_add_timer(&hci_stack->timeout); 1894 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1895 && hci_stack->config 1896 && hci_stack->chipset 1897 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1898 && hci_stack->hci_transport->set_baudrate 1899 && hci_transport_uart_get_main_baud_rate()){ 1900 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1901 } else { 1902 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1903 } 1904 break; 1905 default: 1906 break; 1907 } 1908 1909 if (send_cmd){ 1910 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1911 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1912 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1913 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1914 break; 1915 } 1916 log_info("Init script done"); 1917 1918 // Init script download on Broadcom chipsets causes: 1919 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1920 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1921 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1922 1923 // - baud rate to reset, restore UART baud rate if needed 1924 if (need_baud_change) { 1925 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1926 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1927 hci_stack->hci_transport->set_baudrate(baud_rate); 1928 } 1929 1930 uint16_t bcm_delay_ms = 300; 1931 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1932 // -> Work around: wait here. 1933 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1934 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1935 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1936 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1937 btstack_run_loop_add_timer(&hci_stack->timeout); 1938 break; 1939 } 1940 } 1941 #endif 1942 /* fall through */ 1943 1944 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1945 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1946 hci_send_cmd(&hci_read_local_supported_commands); 1947 break; 1948 case HCI_INIT_READ_BD_ADDR: 1949 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1950 hci_send_cmd(&hci_read_bd_addr); 1951 break; 1952 case HCI_INIT_READ_BUFFER_SIZE: 1953 // only read buffer size if supported 1954 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1955 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1956 hci_send_cmd(&hci_read_buffer_size); 1957 break; 1958 } 1959 1960 /* fall through */ 1961 1962 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1963 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1964 hci_send_cmd(&hci_read_local_supported_features); 1965 break; 1966 1967 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1968 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1969 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1970 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1971 break; 1972 case HCI_INIT_HOST_BUFFER_SIZE: 1973 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1974 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1975 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1976 break; 1977 #endif 1978 1979 case HCI_INIT_SET_EVENT_MASK: 1980 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1981 if (hci_le_supported()){ 1982 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1983 } else { 1984 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1985 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1986 } 1987 break; 1988 1989 case HCI_INIT_SET_EVENT_MASK_2: 1990 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 1991 // setting Event Mask 2 causes Controller to drop Encryption Change events. 1992 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 1993 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 1994 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1995 // Encryption Change Event v2 - bit 25 1996 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1997 break; 1998 } 1999 2000 #ifdef ENABLE_CLASSIC 2001 /* fall through */ 2002 2003 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2004 if (hci_classic_supported() && gap_ssp_supported()){ 2005 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2006 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2007 break; 2008 } 2009 2010 /* fall through */ 2011 2012 case HCI_INIT_WRITE_INQUIRY_MODE: 2013 if (hci_classic_supported()){ 2014 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2015 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2016 break; 2017 } 2018 2019 /* fall through */ 2020 2021 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2022 // skip write secure connections host support if not supported or disabled 2023 if (hci_classic_supported() && hci_stack->secure_connections_enable 2024 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2025 hci_stack->secure_connections_active = true; 2026 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2027 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2028 break; 2029 } 2030 2031 /* fall through */ 2032 2033 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2034 // skip set min encryption key size 2035 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2036 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2037 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2038 break; 2039 } 2040 2041 #ifdef ENABLE_SCO_OVER_HCI 2042 /* fall through */ 2043 2044 // only sent if ENABLE_SCO_OVER_HCI is defined 2045 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2046 // skip write synchronous flow control if not supported 2047 if (hci_classic_supported() 2048 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2049 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2050 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2051 break; 2052 } 2053 /* fall through */ 2054 2055 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2056 // skip write default erroneous data reporting if not supported 2057 if (hci_classic_supported() 2058 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2059 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2060 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2061 break; 2062 } 2063 #endif 2064 2065 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2066 /* fall through */ 2067 2068 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2069 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2070 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2071 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2072 #ifdef ENABLE_SCO_OVER_HCI 2073 log_info("BCM: Route SCO data via HCI transport"); 2074 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2075 #endif 2076 #ifdef ENABLE_SCO_OVER_PCM 2077 log_info("BCM: Route SCO data via PCM interface"); 2078 #ifdef ENABLE_BCM_PCM_WBS 2079 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2080 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2081 #else 2082 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2083 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2084 #endif 2085 #endif 2086 break; 2087 } 2088 #endif 2089 2090 #ifdef ENABLE_SCO_OVER_PCM 2091 /* fall through */ 2092 2093 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2094 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2095 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2096 log_info("BCM: Config PCM interface for I2S"); 2097 #ifdef ENABLE_BCM_PCM_WBS 2098 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2099 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2100 #else 2101 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2102 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2103 #endif 2104 break; 2105 } 2106 #endif 2107 #endif 2108 2109 #ifdef ENABLE_BLE 2110 /* fall through */ 2111 2112 // LE INIT 2113 case HCI_INIT_LE_READ_BUFFER_SIZE: 2114 if (hci_le_supported()){ 2115 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2116 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2117 hci_send_cmd(&hci_le_read_buffer_size_v2); 2118 } else { 2119 hci_send_cmd(&hci_le_read_buffer_size); 2120 } 2121 break; 2122 } 2123 2124 /* fall through */ 2125 2126 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2127 // skip write le host if not supported (e.g. on LE only EM9301) 2128 if (hci_le_supported() 2129 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2130 // LE Supported Host = 1, Simultaneous Host = 0 2131 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2132 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2133 break; 2134 } 2135 2136 /* fall through */ 2137 2138 case HCI_INIT_LE_SET_EVENT_MASK: 2139 if (hci_le_supported()){ 2140 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2141 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2142 break; 2143 } 2144 #endif 2145 2146 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2147 /* fall through */ 2148 2149 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2150 if (hci_le_supported() 2151 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2152 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2153 hci_send_cmd(&hci_le_read_maximum_data_length); 2154 break; 2155 } 2156 2157 /* fall through */ 2158 2159 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2160 if (hci_le_supported() 2161 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2162 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2163 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2164 break; 2165 } 2166 #endif 2167 2168 #ifdef ENABLE_LE_CENTRAL 2169 /* fall through */ 2170 2171 case HCI_INIT_READ_WHITE_LIST_SIZE: 2172 if (hci_le_supported()){ 2173 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2174 hci_send_cmd(&hci_le_read_white_list_size); 2175 break; 2176 } 2177 2178 #endif 2179 2180 #ifdef ENABLE_LE_PERIPHERAL 2181 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2182 /* fall through */ 2183 2184 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2185 if (hci_extended_advertising_supported()){ 2186 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2187 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2188 break; 2189 } 2190 #endif 2191 #endif 2192 /* fall through */ 2193 2194 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2195 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2196 if (hci_le_supported()) { 2197 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2198 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2199 break; 2200 } 2201 #endif 2202 2203 /* fall through */ 2204 2205 case HCI_INIT_DONE: 2206 hci_stack->substate = HCI_INIT_DONE; 2207 // main init sequence complete 2208 #ifdef ENABLE_CLASSIC 2209 // check if initial Classic GAP Tasks are completed 2210 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2211 hci_run_gap_tasks_classic(); 2212 break; 2213 } 2214 #endif 2215 #ifdef ENABLE_BLE 2216 #ifdef ENABLE_LE_CENTRAL 2217 // check if initial LE GAP Tasks are completed 2218 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2219 hci_run_general_gap_le(); 2220 break; 2221 } 2222 #endif 2223 #endif 2224 hci_init_done(); 2225 break; 2226 2227 default: 2228 return; 2229 } 2230 } 2231 2232 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2233 bool command_completed = false; 2234 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2235 uint16_t opcode = little_endian_read_16(packet,3); 2236 if (opcode == hci_stack->last_cmd_opcode){ 2237 command_completed = true; 2238 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2239 } else { 2240 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2241 } 2242 } 2243 2244 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2245 uint8_t status = packet[2]; 2246 uint16_t opcode = little_endian_read_16(packet,4); 2247 if (opcode == hci_stack->last_cmd_opcode){ 2248 if (status){ 2249 command_completed = true; 2250 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2251 } else { 2252 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2253 } 2254 } else { 2255 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2256 } 2257 } 2258 #ifndef HAVE_HOST_CONTROLLER_API 2259 // Vendor == CSR 2260 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2261 // TODO: track actual command 2262 command_completed = true; 2263 } 2264 2265 // Vendor == Toshiba 2266 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2267 // TODO: track actual command 2268 command_completed = true; 2269 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2270 hci_stack->num_cmd_packets = 1; 2271 } 2272 #endif 2273 2274 return command_completed; 2275 } 2276 2277 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2278 2279 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2280 2281 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2282 2283 #ifndef HAVE_HOST_CONTROLLER_API 2284 2285 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2286 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2287 // 2288 // HCI Reset 2289 // Timeout 100 ms 2290 // HCI Reset 2291 // Command Complete Reset 2292 // HCI Read Local Version Information 2293 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2294 // hang... 2295 // 2296 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2297 if (!command_completed 2298 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2299 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2300 2301 uint16_t opcode = little_endian_read_16(packet,3); 2302 if (opcode == hci_reset.opcode){ 2303 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2304 return; 2305 } 2306 } 2307 2308 // CSR & H5 2309 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2310 if (!command_completed 2311 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2312 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2313 2314 uint16_t opcode = little_endian_read_16(packet,3); 2315 if (opcode == hci_reset.opcode){ 2316 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2317 return; 2318 } 2319 } 2320 2321 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2322 // fix: Correct substate and behave as command below 2323 if (command_completed){ 2324 switch (hci_stack->substate){ 2325 case HCI_INIT_SEND_RESET: 2326 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2327 break; 2328 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2329 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2330 break; 2331 default: 2332 break; 2333 } 2334 } 2335 2336 #endif 2337 2338 if (!command_completed) return; 2339 2340 bool need_baud_change = false; 2341 bool need_addr_change = false; 2342 2343 #ifndef HAVE_HOST_CONTROLLER_API 2344 need_baud_change = hci_stack->config 2345 && hci_stack->chipset 2346 && hci_stack->chipset->set_baudrate_command 2347 && hci_stack->hci_transport->set_baudrate 2348 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2349 2350 need_addr_change = hci_stack->custom_bd_addr_set 2351 && hci_stack->chipset 2352 && hci_stack->chipset->set_bd_addr_command; 2353 #endif 2354 2355 switch(hci_stack->substate){ 2356 2357 #ifndef HAVE_HOST_CONTROLLER_API 2358 case HCI_INIT_SEND_RESET: 2359 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2360 // fix: just correct substate and behave as command below 2361 2362 /* fall through */ 2363 #endif 2364 2365 case HCI_INIT_W4_SEND_RESET: 2366 btstack_run_loop_remove_timer(&hci_stack->timeout); 2367 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2368 return; 2369 2370 #ifndef HAVE_HOST_CONTROLLER_API 2371 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2372 // for STLC2500D, baud rate change already happened. 2373 // for others, baud rate gets changed now 2374 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2375 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2376 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2377 hci_stack->hci_transport->set_baudrate(baud_rate); 2378 } 2379 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2380 return; 2381 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2382 btstack_run_loop_remove_timer(&hci_stack->timeout); 2383 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2384 return; 2385 case HCI_INIT_W4_CUSTOM_INIT: 2386 // repeat custom init 2387 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2388 return; 2389 #endif 2390 2391 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2392 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2393 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2394 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2395 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2396 return; 2397 } 2398 if (need_addr_change){ 2399 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2400 return; 2401 } 2402 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2403 return; 2404 #ifndef HAVE_HOST_CONTROLLER_API 2405 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2406 if (need_baud_change){ 2407 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2408 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2409 hci_stack->hci_transport->set_baudrate(baud_rate); 2410 } 2411 if (need_addr_change){ 2412 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2413 return; 2414 } 2415 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2416 return; 2417 case HCI_INIT_W4_SET_BD_ADDR: 2418 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2419 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2420 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2421 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2422 return; 2423 } 2424 // skipping st warm boot 2425 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2426 return; 2427 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2428 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2429 return; 2430 #endif 2431 2432 case HCI_INIT_DONE: 2433 // set state if we came here by fall through 2434 hci_stack->substate = HCI_INIT_DONE; 2435 return; 2436 2437 default: 2438 break; 2439 } 2440 hci_initializing_next_state(); 2441 } 2442 2443 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2444 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2445 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2446 // check if we have been aware of the HCI connection 2447 switch (conn->state){ 2448 case SENT_CREATE_CONNECTION: 2449 case RECEIVED_CONNECTION_REQUEST: 2450 break; 2451 default: 2452 return; 2453 } 2454 2455 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2456 bd_addr_t bd_address; 2457 (void)memcpy(&bd_address, conn->address, 6); 2458 2459 #ifdef ENABLE_CLASSIC 2460 // cache needed data 2461 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2462 #endif 2463 2464 // connection failed, remove entry 2465 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2466 btstack_memory_hci_connection_free( conn ); 2467 2468 #ifdef ENABLE_CLASSIC 2469 // notify client if dedicated bonding 2470 if (notify_dedicated_bonding_failed){ 2471 log_info("hci notify_dedicated_bonding_failed"); 2472 hci_emit_dedicated_bonding_result(bd_address, status); 2473 } 2474 2475 // if authentication error, also delete link key 2476 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2477 gap_drop_link_key_for_bd_addr(bd_address); 2478 } 2479 #else 2480 UNUSED(status); 2481 #endif 2482 } 2483 2484 #ifdef ENABLE_CLASSIC 2485 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2486 // SSP Controller 2487 if (features[6] & (1 << 3)){ 2488 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2489 } 2490 // eSCO 2491 if (features[3] & (1<<7)){ 2492 conn->remote_supported_features[0] |= 1; 2493 } 2494 // Extended features 2495 if (features[7] & (1<<7)){ 2496 conn->remote_supported_features[0] |= 2; 2497 } 2498 } 2499 2500 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2501 // SSP Host 2502 if (features[0] & (1 << 0)){ 2503 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2504 } 2505 // SC Host 2506 if (features[0] & (1 << 3)){ 2507 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2508 } 2509 } 2510 2511 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2512 // SC Controller 2513 if (features[1] & (1 << 0)){ 2514 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2515 } 2516 } 2517 2518 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2519 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2520 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2521 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2522 if (conn->bonding_flags & BONDING_DEDICATED){ 2523 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2524 } 2525 } 2526 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2527 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2528 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2529 } 2530 2531 #endif 2532 2533 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2534 // handle BT initialization 2535 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2536 hci_initializing_event_handler(packet, size); 2537 } 2538 2539 // help with BT sleep 2540 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2541 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2542 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2543 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2544 hci_initializing_next_state(); 2545 } 2546 } 2547 2548 #ifdef ENABLE_CLASSIC 2549 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2550 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2551 conn->encryption_key_size = encryption_key_size; 2552 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2553 2554 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2555 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2556 conn->bonding_flags &= ~BONDING_DEDICATED; 2557 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2558 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2559 return; 2560 } 2561 2562 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2563 conn->requested_security_level = LEVEL_0; 2564 hci_emit_security_level(conn->con_handle, security_level); 2565 return; 2566 } 2567 2568 // Request remote features if not already done 2569 hci_trigger_remote_features_for_connection(conn); 2570 2571 // Request Authentication if not already done 2572 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2573 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2574 } 2575 #endif 2576 2577 static void hci_store_local_supported_commands(const uint8_t * packet){ 2578 // create mapping table 2579 #define X(name, offset, bit) { offset, bit }, 2580 static struct { 2581 uint8_t byte_offset; 2582 uint8_t bit_position; 2583 } supported_hci_commands_map [] = { 2584 SUPPORTED_HCI_COMMANDS 2585 }; 2586 #undef X 2587 2588 // create names for debug purposes 2589 #ifdef ENABLE_LOG_DEBUG 2590 #define X(name, offset, bit) #name, 2591 static const char * command_names[] = { 2592 SUPPORTED_HCI_COMMANDS 2593 }; 2594 #undef X 2595 #endif 2596 2597 hci_stack->local_supported_commands = 0; 2598 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2599 uint16_t i; 2600 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2601 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2602 #ifdef ENABLE_LOG_DEBUG 2603 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); 2604 #else 2605 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2606 #endif 2607 hci_stack->local_supported_commands |= (1LU << i); 2608 } 2609 } 2610 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2611 } 2612 2613 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2614 UNUSED(size); 2615 2616 uint16_t manufacturer; 2617 #ifdef ENABLE_CLASSIC 2618 hci_con_handle_t handle; 2619 hci_connection_t * conn; 2620 #endif 2621 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2622 uint8_t status; 2623 #endif 2624 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2625 le_audio_cig_t * cig; 2626 #endif 2627 2628 // get num cmd packets - limit to 1 to reduce complexity 2629 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2630 2631 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2632 switch (opcode){ 2633 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2634 if (packet[5]) break; 2635 // terminate, name 248 chars 2636 packet[6+248] = 0; 2637 log_info("local name: %s", &packet[6]); 2638 break; 2639 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2640 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2641 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2642 uint16_t acl_len = little_endian_read_16(packet, 6); 2643 uint16_t sco_len = packet[8]; 2644 2645 // determine usable ACL/SCO payload size 2646 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2647 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2648 2649 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2650 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2651 2652 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2653 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2654 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2655 } 2656 break; 2657 case HCI_OPCODE_HCI_READ_RSSI: 2658 if (packet[5] == ERROR_CODE_SUCCESS){ 2659 uint8_t event[5]; 2660 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2661 event[1] = 3; 2662 (void)memcpy(&event[2], &packet[6], 3); 2663 hci_emit_event(event, sizeof(event), 1); 2664 } 2665 break; 2666 #ifdef ENABLE_BLE 2667 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2668 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2669 hci_stack->le_iso_packets_total_num = packet[11]; 2670 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2671 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2672 2673 /* fall through */ 2674 2675 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2676 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2677 hci_stack->le_acl_packets_total_num = packet[8]; 2678 // determine usable ACL payload size 2679 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2680 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2681 } 2682 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); 2683 break; 2684 #endif 2685 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2686 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2687 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2688 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2689 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); 2690 break; 2691 #endif 2692 #ifdef ENABLE_LE_CENTRAL 2693 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2694 hci_stack->le_whitelist_capacity = packet[6]; 2695 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2696 break; 2697 #endif 2698 #ifdef ENABLE_LE_PERIPHERAL 2699 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2700 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2701 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2702 break; 2703 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2704 if (hci_stack->le_advertising_set_in_current_command != 0) { 2705 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2706 hci_stack->le_advertising_set_in_current_command = 0; 2707 if (advertising_set == NULL) break; 2708 uint8_t adv_status = packet[6]; 2709 uint8_t tx_power = packet[7]; 2710 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 }; 2711 if (adv_status == 0){ 2712 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2713 } 2714 hci_emit_event(event, sizeof(event), 1); 2715 } 2716 break; 2717 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2718 if (hci_stack->le_advertising_set_in_current_command != 0) { 2719 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2720 hci_stack->le_advertising_set_in_current_command = 0; 2721 if (advertising_set == NULL) break; 2722 uint8_t adv_status = packet[5]; 2723 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2724 if (adv_status == 0){ 2725 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2726 } 2727 hci_emit_event(event, sizeof(event), 1); 2728 } 2729 break; 2730 #endif 2731 #endif 2732 case HCI_OPCODE_HCI_READ_BD_ADDR: 2733 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2734 log_info("Local Address, Status: 0x%02x: Addr: %s", packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(hci_stack->local_bd_addr)); 2735 #ifdef ENABLE_CLASSIC 2736 if (hci_stack->link_key_db){ 2737 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2738 } 2739 #endif 2740 break; 2741 #ifdef ENABLE_CLASSIC 2742 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2743 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2744 break; 2745 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2746 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2747 if (status == ERROR_CODE_SUCCESS) { 2748 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2749 } else { 2750 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2751 } 2752 break; 2753 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2754 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2755 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2756 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2757 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2758 hci_emit_event(event, sizeof(event), 1); 2759 } 2760 break; 2761 #endif 2762 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2763 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2764 2765 #ifdef ENABLE_CLASSIC 2766 // determine usable ACL packet types based on host buffer size and supported features 2767 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2768 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2769 #endif 2770 // Classic/LE 2771 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2772 break; 2773 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2774 manufacturer = little_endian_read_16(packet, 10); 2775 // map Cypress to Broadcom 2776 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2777 log_info("Treat Cypress as Broadcom"); 2778 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2779 little_endian_store_16(packet, 10, manufacturer); 2780 } 2781 hci_stack->manufacturer = manufacturer; 2782 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2783 break; 2784 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2785 hci_store_local_supported_commands(packet); 2786 break; 2787 #ifdef ENABLE_CLASSIC 2788 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2789 if (packet[5]) return; 2790 hci_stack->synchronous_flow_control_enabled = 1; 2791 break; 2792 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2793 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2794 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2795 conn = hci_connection_for_handle(handle); 2796 if (conn != NULL) { 2797 uint8_t key_size = 0; 2798 if (status == 0){ 2799 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2800 log_info("Handle %04x key Size: %u", handle, key_size); 2801 } else { 2802 key_size = 1; 2803 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2804 } 2805 hci_handle_read_encryption_key_size_complete(conn, key_size); 2806 } 2807 break; 2808 // assert pairing complete event is emitted. 2809 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2810 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2811 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2812 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2813 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2814 // lookup connection by gap pairing addr 2815 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2816 if (conn == NULL) break; 2817 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2818 break; 2819 2820 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2821 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2822 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2823 uint8_t event[67]; 2824 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2825 event[1] = 65; 2826 (void)memset(&event[2], 0, 65); 2827 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2828 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2829 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2830 event[2] = 3; 2831 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2832 } else { 2833 event[2] = 1; 2834 } 2835 } 2836 hci_emit_event(event, sizeof(event), 0); 2837 break; 2838 } 2839 2840 // note: only needed if user does not provide OOB data 2841 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2842 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2843 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2844 if (conn == NULL) break; 2845 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2846 break; 2847 #endif 2848 #endif 2849 #ifdef ENABLE_BLE 2850 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2851 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2852 // lookup CIG 2853 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2854 if (cig != NULL){ 2855 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2856 uint8_t i = 0; 2857 if (status == ERROR_CODE_SUCCESS){ 2858 // assign CIS handles to pre-allocated CIS 2859 btstack_linked_list_iterator_t it; 2860 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2861 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2862 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2863 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2864 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2865 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2866 iso_stream->con_handle = cis_handle; 2867 cig->cis_con_handles[i] = cis_handle; 2868 i++; 2869 } 2870 } 2871 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2872 hci_emit_cig_created(cig, status); 2873 } else { 2874 hci_emit_cig_created(cig, status); 2875 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2876 } 2877 } 2878 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2879 break; 2880 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2881 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2882 if (status != ERROR_CODE_SUCCESS){ 2883 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2884 } 2885 break; 2886 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2887 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2888 if (status != ERROR_CODE_SUCCESS){ 2889 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2890 } 2891 break; 2892 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2893 // lookup BIG by state 2894 btstack_linked_list_iterator_t it; 2895 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2896 while (btstack_linked_list_iterator_has_next(&it)) { 2897 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2898 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2899 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2900 if (status == ERROR_CODE_SUCCESS){ 2901 big->state_vars.next_bis++; 2902 if (big->state_vars.next_bis == big->num_bis){ 2903 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2904 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2905 } else { 2906 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2907 } 2908 } else { 2909 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2910 big->state_vars.status = status; 2911 } 2912 return; 2913 } 2914 } 2915 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2916 while (btstack_linked_list_iterator_has_next(&it)) { 2917 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2918 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2919 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2920 if (status == ERROR_CODE_SUCCESS){ 2921 big_sync->state_vars.next_bis++; 2922 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2923 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2924 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2925 } else { 2926 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2927 } 2928 } else { 2929 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2930 big_sync->state_vars.status = status; 2931 } 2932 return; 2933 } 2934 } 2935 // Lookup CIS via active group operation 2936 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 2937 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 2938 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2939 2940 // lookup CIS by state 2941 btstack_linked_list_iterator_t it; 2942 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2943 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2944 while (btstack_linked_list_iterator_has_next(&it)){ 2945 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2946 handle = iso_stream->con_handle; 2947 switch (iso_stream->state){ 2948 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 2949 if (status != ERROR_CODE_SUCCESS){ 2950 hci_iso_stream_finalize(iso_stream); 2951 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2952 break; 2953 } 2954 if (iso_stream->max_sdu_c_to_p > 0){ 2955 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 2956 } else { 2957 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2958 } 2959 break; 2960 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 2961 if (status != ERROR_CODE_SUCCESS){ 2962 hci_iso_stream_finalize(iso_stream); 2963 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2964 break; 2965 } 2966 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2967 break; 2968 default: 2969 break; 2970 } 2971 } 2972 } else { 2973 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2974 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2975 if (cig != NULL) { 2976 // emit cis created if all ISO Paths have been created 2977 // assume we are central 2978 uint8_t cis_index = cig->state_vars.next_cis >> 1; 2979 uint8_t cis_direction = cig->state_vars.next_cis & 1; 2980 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 2981 // if outgoing has been setup, or incoming was setup but outgoing not required 2982 if ((cis_direction == 1) || (outgoing_needed == false)){ 2983 hci_emit_cis_created(cig->cig_id, cig->cis_con_handles[cis_index], status); 2984 } 2985 // next state 2986 cig->state_vars.next_cis++; 2987 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 2988 } 2989 } 2990 } 2991 break; 2992 } 2993 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 2994 // lookup BIG by state 2995 btstack_linked_list_iterator_t it; 2996 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2997 while (btstack_linked_list_iterator_has_next(&it)) { 2998 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2999 uint8_t big_handle = big_sync->big_handle; 3000 switch (big_sync->state){ 3001 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3002 btstack_linked_list_iterator_remove(&it); 3003 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3004 return; 3005 default: 3006 btstack_linked_list_iterator_remove(&it); 3007 hci_emit_big_sync_stopped(big_handle); 3008 return; 3009 } 3010 } 3011 break; 3012 } 3013 #endif 3014 #endif 3015 default: 3016 break; 3017 } 3018 } 3019 3020 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3021 UNUSED(size); 3022 3023 // get num cmd packets - limit to 1 to reduce complexity 3024 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3025 3026 // get opcode and command status 3027 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3028 3029 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3030 uint8_t status = hci_event_command_status_get_status(packet); 3031 #endif 3032 3033 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3034 bd_addr_type_t addr_type; 3035 #endif 3036 3037 switch (opcode){ 3038 #ifdef ENABLE_CLASSIC 3039 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3040 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3041 #endif 3042 #ifdef ENABLE_LE_CENTRAL 3043 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3044 #endif 3045 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3046 addr_type = hci_stack->outgoing_addr_type; 3047 3048 // reset outgoing address info 3049 memset(hci_stack->outgoing_addr, 0, 6); 3050 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3051 3052 // on error 3053 if (status != ERROR_CODE_SUCCESS){ 3054 #ifdef ENABLE_LE_CENTRAL 3055 if (hci_is_le_connection_type(addr_type)){ 3056 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3057 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3058 } 3059 #endif 3060 // error => outgoing connection failed 3061 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 3062 if (conn != NULL){ 3063 hci_handle_connection_failed(conn, status); 3064 } 3065 } 3066 break; 3067 #endif 3068 #ifdef ENABLE_CLASSIC 3069 case HCI_OPCODE_HCI_INQUIRY: 3070 if (status == ERROR_CODE_SUCCESS) { 3071 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3072 } else { 3073 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3074 } 3075 break; 3076 #endif 3077 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3078 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3079 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3080 if (status == ERROR_CODE_SUCCESS){ 3081 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3082 } else { 3083 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3084 } 3085 break; 3086 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3087 default: 3088 break; 3089 } 3090 } 3091 3092 #ifdef ENABLE_BLE 3093 static void event_handle_le_connection_complete(const uint8_t * packet){ 3094 bd_addr_t addr; 3095 bd_addr_type_t addr_type; 3096 hci_connection_t * conn; 3097 3098 // Connection management 3099 reverse_bd_addr(&packet[8], addr); 3100 addr_type = (bd_addr_type_t)packet[7]; 3101 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 3102 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3103 3104 #ifdef ENABLE_LE_CENTRAL 3105 // handle error: error is reported only to the initiator -> outgoing connection 3106 if (packet[3]){ 3107 3108 // handle cancelled outgoing connection 3109 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3110 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3111 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3112 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3113 // reset state 3114 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3115 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3116 // get outgoing connection conn struct for direct connect 3117 conn = gap_get_outgoing_connection(); 3118 } 3119 3120 // outgoing le connection establishment is done 3121 if (conn){ 3122 // remove entry 3123 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3124 btstack_memory_hci_connection_free( conn ); 3125 } 3126 return; 3127 } 3128 #endif 3129 3130 // on success, both hosts receive connection complete event 3131 if (packet[6] == HCI_ROLE_MASTER){ 3132 #ifdef ENABLE_LE_CENTRAL 3133 // if we're master on an le connection, it was an outgoing connection and we're done with it 3134 // note: no hci_connection_t object exists yet for connect with whitelist 3135 if (hci_is_le_connection_type(addr_type)){ 3136 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3137 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3138 } 3139 #endif 3140 } else { 3141 #ifdef ENABLE_LE_PERIPHERAL 3142 // if we're slave, it was an incoming connection, advertisements have stopped 3143 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3144 #endif 3145 } 3146 3147 // LE connections are auto-accepted, so just create a connection if there isn't one already 3148 if (!conn){ 3149 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3150 } 3151 3152 // no memory, sorry. 3153 if (!conn){ 3154 return; 3155 } 3156 3157 conn->state = OPEN; 3158 conn->role = packet[6]; 3159 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3160 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3161 3162 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3163 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3164 3165 #ifdef ENABLE_LE_PERIPHERAL 3166 if (packet[6] == HCI_ROLE_SLAVE){ 3167 hci_update_advertisements_enabled_for_current_roles(); 3168 } 3169 #endif 3170 3171 // init unenhanced att bearer mtu 3172 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3173 conn->att_connection.mtu_exchanged = false; 3174 3175 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3176 3177 // restart timer 3178 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3179 // btstack_run_loop_add_timer(&conn->timeout); 3180 3181 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3182 3183 hci_emit_nr_connections_changed(); 3184 } 3185 #endif 3186 3187 #ifdef ENABLE_CLASSIC 3188 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){ 3189 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3190 // LEVEL_4 is tested by l2cap 3191 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3192 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3193 if (level >= LEVEL_3){ 3194 // MITM not possible without keyboard or display 3195 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3196 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3197 3198 // MITM possible if one side has keyboard and the other has keyboard or display 3199 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3200 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3201 3202 // MITM not possible if one side has only display and other side has no keyboard 3203 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3204 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3205 } 3206 // LEVEL 2 requires SSP, which is a given 3207 return true; 3208 } 3209 3210 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3211 // get requested security level 3212 gap_security_level_t requested_security_level = conn->requested_security_level; 3213 if (hci_stack->gap_secure_connections_only_mode){ 3214 requested_security_level = LEVEL_4; 3215 } 3216 3217 // assess security: LEVEL 4 requires SC 3218 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3219 if ((requested_security_level == LEVEL_4) && 3220 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3221 !hci_remote_sc_enabled(conn)){ 3222 log_info("Level 4 required, but SC not supported -> abort"); 3223 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3224 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3225 return; 3226 } 3227 3228 // assess security based on io capabilities 3229 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3230 // responder: fully validate io caps of both sides as well as OOB data 3231 bool security_possible = false; 3232 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3233 3234 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3235 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3236 // so we merge the OOB data availability 3237 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3238 if (conn->classic_oob_c_192 != NULL){ 3239 have_oob_data |= 1; 3240 } 3241 if (conn->classic_oob_c_256 != NULL){ 3242 have_oob_data |= 2; 3243 } 3244 // for up to Level 3, either P-192 as well as P-256 will do 3245 // 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 3246 // if remote does not SC, we should not receive P-256 data either 3247 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3248 security_possible = true; 3249 } 3250 // for Level 4, P-256 is needed 3251 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3252 security_possible = true; 3253 } 3254 #endif 3255 3256 if (security_possible == false){ 3257 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3258 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3259 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3260 return; 3261 } 3262 } else { 3263 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3264 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3265 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3266 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3267 log_info("Level 3+ required, but no input/output -> abort"); 3268 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3269 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3270 return; 3271 } 3272 #endif 3273 #endif 3274 } 3275 3276 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3277 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3278 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3279 } else { 3280 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3281 } 3282 #endif 3283 } 3284 3285 #endif 3286 3287 static void event_handler(uint8_t *packet, uint16_t size){ 3288 3289 uint16_t event_length = packet[1]; 3290 3291 // assert packet is complete 3292 if (size != (event_length + 2u)){ 3293 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3294 return; 3295 } 3296 3297 hci_con_handle_t handle; 3298 hci_connection_t * conn; 3299 int i; 3300 3301 #ifdef ENABLE_CLASSIC 3302 hci_link_type_t link_type; 3303 bd_addr_t addr; 3304 bd_addr_type_t addr_type; 3305 #endif 3306 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3307 hci_iso_stream_t * iso_stream; 3308 le_audio_big_t * big; 3309 le_audio_big_sync_t * big_sync; 3310 #endif 3311 3312 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3313 3314 switch (hci_event_packet_get_type(packet)) { 3315 3316 case HCI_EVENT_COMMAND_COMPLETE: 3317 handle_command_complete_event(packet, size); 3318 break; 3319 3320 case HCI_EVENT_COMMAND_STATUS: 3321 handle_command_status_event(packet, size); 3322 break; 3323 3324 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3325 if (size < 3) return; 3326 uint16_t num_handles = packet[2]; 3327 if (size != (3u + num_handles * 4u)) return; 3328 #ifdef ENABLE_CLASSIC 3329 bool notify_sco = false; 3330 #endif 3331 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3332 bool notify_iso = false; 3333 #endif 3334 uint16_t offset = 3; 3335 for (i=0; i<num_handles;i++){ 3336 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3337 offset += 2u; 3338 uint16_t num_packets = little_endian_read_16(packet, offset); 3339 offset += 2u; 3340 3341 conn = hci_connection_for_handle(handle); 3342 if (conn != NULL) { 3343 3344 if (conn->num_packets_sent >= num_packets) { 3345 conn->num_packets_sent -= num_packets; 3346 } else { 3347 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3348 conn->num_packets_sent = 0; 3349 } 3350 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3351 #ifdef ENABLE_CLASSIC 3352 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3353 notify_sco = true; 3354 } 3355 #endif 3356 } 3357 3358 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3359 hci_controller_dump_packets(); 3360 #endif 3361 3362 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3363 if (conn == NULL){ 3364 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3365 if (iso_stream != NULL){ 3366 if (iso_stream->num_packets_sent >= num_packets) { 3367 iso_stream->num_packets_sent -= num_packets; 3368 } else { 3369 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3370 iso_stream->num_packets_sent = 0; 3371 } 3372 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3373 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3374 if (big != NULL){ 3375 big->num_completed_timestamp_current_valid = true; 3376 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3377 } 3378 } 3379 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3380 num_packets, handle, iso_stream->num_packets_sent); 3381 notify_iso = true; 3382 } 3383 } 3384 #endif 3385 } 3386 3387 #ifdef ENABLE_CLASSIC 3388 if (notify_sco){ 3389 hci_notify_if_sco_can_send_now(); 3390 } 3391 #endif 3392 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3393 if (notify_iso){ 3394 hci_iso_notify_can_send_now(); 3395 } 3396 #endif 3397 break; 3398 } 3399 3400 #ifdef ENABLE_CLASSIC 3401 case HCI_EVENT_FLUSH_OCCURRED: 3402 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3403 handle = hci_event_flush_occurred_get_handle(packet); 3404 conn = hci_connection_for_handle(handle); 3405 if (conn) { 3406 log_info("Flush occurred, disconnect 0x%04x", handle); 3407 conn->state = SEND_DISCONNECT; 3408 } 3409 break; 3410 3411 case HCI_EVENT_INQUIRY_COMPLETE: 3412 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3413 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3414 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3415 hci_emit_event(event, sizeof(event), 1); 3416 } 3417 break; 3418 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3419 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3420 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3421 } 3422 break; 3423 case HCI_EVENT_CONNECTION_REQUEST: 3424 reverse_bd_addr(&packet[2], addr); 3425 link_type = (hci_link_type_t) packet[11]; 3426 3427 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3428 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3429 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3430 bd_addr_copy(hci_stack->decline_addr, addr); 3431 break; 3432 } 3433 3434 if (hci_stack->gap_classic_accept_callback != NULL){ 3435 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3436 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3437 bd_addr_copy(hci_stack->decline_addr, addr); 3438 break; 3439 } 3440 } 3441 3442 // TODO: eval COD 8-10 3443 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3444 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3445 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3446 if (!conn) { 3447 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3448 } 3449 if (!conn) { 3450 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3451 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3452 bd_addr_copy(hci_stack->decline_addr, addr); 3453 hci_run(); 3454 // avoid event to higher layer 3455 return; 3456 } 3457 conn->role = HCI_ROLE_SLAVE; 3458 conn->state = RECEIVED_CONNECTION_REQUEST; 3459 // store info about eSCO 3460 if (link_type == HCI_LINK_TYPE_ESCO){ 3461 conn->remote_supported_features[0] |= 1; 3462 } 3463 hci_run(); 3464 break; 3465 3466 case HCI_EVENT_CONNECTION_COMPLETE: 3467 // Connection management 3468 reverse_bd_addr(&packet[5], addr); 3469 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3470 addr_type = BD_ADDR_TYPE_ACL; 3471 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3472 if (conn) { 3473 switch (conn->state){ 3474 // expected states 3475 case ACCEPTED_CONNECTION_REQUEST: 3476 case SENT_CREATE_CONNECTION: 3477 break; 3478 // unexpected state -> ignore 3479 default: 3480 // don't forward event to app 3481 return; 3482 } 3483 if (!packet[2]){ 3484 conn->state = OPEN; 3485 conn->con_handle = little_endian_read_16(packet, 3); 3486 3487 // trigger write supervision timeout if we're master 3488 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3489 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3490 } 3491 3492 // trigger write automatic flush timeout 3493 if (hci_stack->automatic_flush_timeout != 0){ 3494 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3495 } 3496 3497 // restart timer 3498 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3499 btstack_run_loop_add_timer(&conn->timeout); 3500 3501 // trigger remote features for dedicated bonding 3502 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3503 hci_trigger_remote_features_for_connection(conn); 3504 } 3505 3506 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3507 3508 hci_emit_nr_connections_changed(); 3509 } else { 3510 // connection failed 3511 hci_handle_connection_failed(conn, packet[2]); 3512 } 3513 } 3514 break; 3515 3516 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3517 reverse_bd_addr(&packet[5], addr); 3518 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3519 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3520 if (packet[2]){ 3521 // connection failed 3522 if (conn){ 3523 hci_handle_connection_failed(conn, packet[2]); 3524 } 3525 break; 3526 } 3527 if (!conn) { 3528 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3529 } 3530 if (!conn) { 3531 break; 3532 } 3533 conn->state = OPEN; 3534 conn->con_handle = little_endian_read_16(packet, 3); 3535 3536 #ifdef ENABLE_SCO_OVER_HCI 3537 // update SCO 3538 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3539 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3540 } 3541 // trigger can send now 3542 if (hci_have_usb_transport()){ 3543 hci_stack->sco_can_send_now = true; 3544 } 3545 #endif 3546 #ifdef HAVE_SCO_TRANSPORT 3547 // configure sco transport 3548 if (hci_stack->sco_transport != NULL){ 3549 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3550 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3551 } 3552 #endif 3553 break; 3554 3555 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3556 handle = little_endian_read_16(packet, 3); 3557 conn = hci_connection_for_handle(handle); 3558 if (!conn) break; 3559 if (!packet[2]){ 3560 const uint8_t * features = &packet[5]; 3561 hci_handle_remote_features_page_0(conn, features); 3562 3563 // read extended features if possible 3564 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3565 && ((conn->remote_supported_features[0] & 2) != 0)) { 3566 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3567 break; 3568 } 3569 } 3570 hci_handle_remote_features_received(conn); 3571 break; 3572 3573 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3574 handle = little_endian_read_16(packet, 3); 3575 conn = hci_connection_for_handle(handle); 3576 if (!conn) break; 3577 // status = ok, page = 1 3578 if (!packet[2]) { 3579 uint8_t page_number = packet[5]; 3580 uint8_t maximum_page_number = packet[6]; 3581 const uint8_t * features = &packet[7]; 3582 bool done = false; 3583 switch (page_number){ 3584 case 1: 3585 hci_handle_remote_features_page_1(conn, features); 3586 if (maximum_page_number >= 2){ 3587 // get Secure Connections (Controller) from Page 2 if available 3588 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3589 } else { 3590 // otherwise, assume SC (Controller) == SC (Host) 3591 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3592 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3593 } 3594 done = true; 3595 } 3596 break; 3597 case 2: 3598 hci_handle_remote_features_page_2(conn, features); 3599 done = true; 3600 break; 3601 default: 3602 break; 3603 } 3604 if (!done) break; 3605 } 3606 hci_handle_remote_features_received(conn); 3607 break; 3608 3609 case HCI_EVENT_LINK_KEY_REQUEST: 3610 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3611 hci_event_link_key_request_get_bd_addr(packet, addr); 3612 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3613 if (!conn) break; 3614 3615 // lookup link key in db if not cached 3616 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3617 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3618 } 3619 3620 // response sent by hci_run() 3621 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3622 #endif 3623 break; 3624 3625 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3626 hci_event_link_key_request_get_bd_addr(packet, addr); 3627 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3628 if (!conn) break; 3629 3630 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3631 3632 // CVE-2020-26555: ignore NULL link key 3633 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3634 if (btstack_is_null(&packet[8], 16)) break; 3635 3636 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3637 // Change Connection Encryption keeps link key type 3638 if (link_key_type != CHANGED_COMBINATION_KEY){ 3639 conn->link_key_type = link_key_type; 3640 } 3641 3642 // cache link key. link keys stored in little-endian format for legacy reasons 3643 memcpy(&conn->link_key, &packet[8], 16); 3644 3645 // only store link key: 3646 // - if bondable enabled 3647 if (hci_stack->bondable == false) break; 3648 // - if security level sufficient 3649 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3650 // - for SSP, also check if remote side requested bonding as well 3651 if (conn->link_key_type != COMBINATION_KEY){ 3652 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3653 if (!remote_bonding){ 3654 break; 3655 } 3656 } 3657 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3658 break; 3659 } 3660 3661 case HCI_EVENT_PIN_CODE_REQUEST: 3662 hci_event_pin_code_request_get_bd_addr(packet, addr); 3663 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3664 if (!conn) break; 3665 3666 hci_pairing_started(conn, false); 3667 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3668 if (!hci_stack->bondable ){ 3669 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3670 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3671 hci_run(); 3672 return; 3673 } 3674 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3675 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3676 log_info("Level 4 required, but SC not supported -> abort"); 3677 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3678 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3679 hci_run(); 3680 return; 3681 } 3682 break; 3683 3684 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3685 hci_event_io_capability_response_get_bd_addr(packet, addr); 3686 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3687 if (!conn) break; 3688 3689 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3690 hci_pairing_started(conn, true); 3691 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3692 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3693 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3694 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3695 #endif 3696 break; 3697 3698 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3699 hci_event_io_capability_response_get_bd_addr(packet, addr); 3700 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3701 if (!conn) break; 3702 3703 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3704 hci_connection_timestamp(conn); 3705 hci_pairing_started(conn, true); 3706 break; 3707 3708 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3709 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3710 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3711 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3712 if (!conn) break; 3713 3714 hci_connection_timestamp(conn); 3715 3716 hci_pairing_started(conn, true); 3717 3718 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3719 break; 3720 #endif 3721 3722 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3723 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3724 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3725 if (!conn) break; 3726 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3727 if (hci_stack->ssp_auto_accept){ 3728 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3729 }; 3730 } else { 3731 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3732 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3733 // don't forward event to app 3734 hci_run(); 3735 return; 3736 } 3737 break; 3738 3739 case HCI_EVENT_USER_PASSKEY_REQUEST: 3740 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3741 if (hci_stack->ssp_auto_accept){ 3742 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3743 }; 3744 break; 3745 3746 case HCI_EVENT_MODE_CHANGE: 3747 handle = hci_event_mode_change_get_handle(packet); 3748 conn = hci_connection_for_handle(handle); 3749 if (!conn) break; 3750 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3751 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3752 break; 3753 #endif 3754 3755 case HCI_EVENT_ENCRYPTION_CHANGE: 3756 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3757 handle = hci_event_encryption_change_get_connection_handle(packet); 3758 conn = hci_connection_for_handle(handle); 3759 if (!conn) break; 3760 if (hci_event_encryption_change_get_status(packet) == 0u) { 3761 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3762 if (encryption_enabled){ 3763 if (hci_is_le_connection(conn)){ 3764 // For LE, we accept connection as encrypted 3765 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3766 } 3767 #ifdef ENABLE_CLASSIC 3768 else { 3769 3770 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3771 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3772 bool connected_uses_aes_ccm = encryption_enabled == 2; 3773 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3774 log_info("SC during pairing, but only E0 now -> abort"); 3775 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3776 break; 3777 } 3778 3779 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3780 if (connected_uses_aes_ccm){ 3781 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3782 } 3783 3784 #ifdef ENABLE_TESTING_SUPPORT 3785 // work around for issue with PTS dongle 3786 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3787 #endif 3788 // validate encryption key size 3789 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3790 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3791 // already got encryption key size 3792 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3793 } else { 3794 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3795 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3796 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3797 } else { 3798 // if not, pretend everything is perfect 3799 hci_handle_read_encryption_key_size_complete(conn, 16); 3800 } 3801 } 3802 } 3803 #endif 3804 } else { 3805 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3806 } 3807 } else { 3808 uint8_t status = hci_event_encryption_change_get_status(packet); 3809 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3810 conn->bonding_flags &= ~BONDING_DEDICATED; 3811 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3812 conn->bonding_status = status; 3813 } 3814 } 3815 3816 break; 3817 3818 #ifdef ENABLE_CLASSIC 3819 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3820 handle = hci_event_authentication_complete_get_connection_handle(packet); 3821 conn = hci_connection_for_handle(handle); 3822 if (!conn) break; 3823 3824 // clear authentication active flag 3825 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3826 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3827 3828 // authenticated only if auth status == 0 3829 if (hci_event_authentication_complete_get_status(packet) == 0){ 3830 // authenticated 3831 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3832 3833 // If not already encrypted, start encryption 3834 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3835 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3836 break; 3837 } 3838 } 3839 3840 // emit updated security level 3841 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3842 break; 3843 3844 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3845 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3846 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3847 if (!conn) break; 3848 3849 // treat successfully paired connection as authenticated 3850 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3851 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3852 } 3853 3854 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3855 break; 3856 #endif 3857 3858 // HCI_EVENT_DISCONNECTION_COMPLETE 3859 // has been split, to first notify stack before shutting connection down 3860 // see end of function, too. 3861 case HCI_EVENT_DISCONNECTION_COMPLETE: 3862 if (packet[2]) break; // status != 0 3863 handle = little_endian_read_16(packet, 3); 3864 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3865 if (hci_stack->acl_fragmentation_total_size > 0u) { 3866 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3867 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3868 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3869 hci_stack->acl_fragmentation_total_size = 0; 3870 hci_stack->acl_fragmentation_pos = 0; 3871 if (release_buffer){ 3872 hci_release_packet_buffer(); 3873 } 3874 } 3875 } 3876 3877 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3878 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3879 if (hci_stack->iso_fragmentation_total_size > 0u) { 3880 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3881 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3882 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3883 hci_stack->iso_fragmentation_total_size = 0; 3884 hci_stack->iso_fragmentation_pos = 0; 3885 if (release_buffer){ 3886 hci_release_packet_buffer(); 3887 } 3888 } 3889 } 3890 3891 // finalize iso stream if handle matches 3892 iso_stream = hci_iso_stream_for_con_handle(handle); 3893 if (iso_stream != NULL){ 3894 hci_iso_stream_finalize(iso_stream); 3895 break; 3896 } 3897 #endif 3898 3899 conn = hci_connection_for_handle(handle); 3900 if (!conn) break; 3901 #ifdef ENABLE_CLASSIC 3902 // pairing failed if it was ongoing 3903 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3904 #endif 3905 3906 // emit dedicatd bonding event 3907 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3908 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3909 } 3910 3911 // mark connection for shutdown, stop timers, reset state 3912 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3913 hci_connection_stop_timer(conn); 3914 hci_connection_init(conn); 3915 3916 #ifdef ENABLE_BLE 3917 #ifdef ENABLE_LE_PERIPHERAL 3918 // re-enable advertisements for le connections if active 3919 if (hci_is_le_connection(conn)){ 3920 hci_update_advertisements_enabled_for_current_roles(); 3921 } 3922 #endif 3923 #endif 3924 break; 3925 3926 case HCI_EVENT_HARDWARE_ERROR: 3927 log_error("Hardware Error: 0x%02x", packet[2]); 3928 if (hci_stack->hardware_error_callback){ 3929 (*hci_stack->hardware_error_callback)(packet[2]); 3930 } else { 3931 // if no special requests, just reboot stack 3932 hci_power_control_off(); 3933 hci_power_control_on(); 3934 } 3935 break; 3936 3937 #ifdef ENABLE_CLASSIC 3938 case HCI_EVENT_ROLE_CHANGE: 3939 if (packet[2]) break; // status != 0 3940 reverse_bd_addr(&packet[3], addr); 3941 addr_type = BD_ADDR_TYPE_ACL; 3942 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3943 if (!conn) break; 3944 conn->role = packet[9]; 3945 break; 3946 #endif 3947 3948 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3949 // release packet buffer only for asynchronous transport and if there are not further fragments 3950 if (hci_transport_synchronous()) { 3951 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3952 return; // instead of break: to avoid re-entering hci_run() 3953 } 3954 hci_stack->acl_fragmentation_tx_active = 0; 3955 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3956 hci_stack->iso_fragmentation_tx_active = 0; 3957 if (hci_stack->iso_fragmentation_total_size) break; 3958 #endif 3959 if (hci_stack->acl_fragmentation_total_size) break; 3960 hci_release_packet_buffer(); 3961 3962 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3963 hci_iso_notify_can_send_now(); 3964 #endif 3965 // L2CAP receives this event via the hci_emit_event below 3966 3967 #ifdef ENABLE_CLASSIC 3968 // For SCO, we do the can_send_now_check here 3969 hci_notify_if_sco_can_send_now(); 3970 #endif 3971 break; 3972 3973 #ifdef ENABLE_CLASSIC 3974 case HCI_EVENT_SCO_CAN_SEND_NOW: 3975 // For SCO, we do the can_send_now_check here 3976 hci_stack->sco_can_send_now = true; 3977 hci_notify_if_sco_can_send_now(); 3978 return; 3979 3980 // explode inquriy results for easier consumption 3981 case HCI_EVENT_INQUIRY_RESULT: 3982 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3983 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3984 gap_inquiry_explode(packet, size); 3985 break; 3986 #endif 3987 3988 #ifdef ENABLE_BLE 3989 case HCI_EVENT_LE_META: 3990 switch (packet[2]){ 3991 #ifdef ENABLE_LE_CENTRAL 3992 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3993 if (!hci_stack->le_scanning_enabled) break; 3994 le_handle_advertisement_report(packet, size); 3995 break; 3996 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3997 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3998 if (!hci_stack->le_scanning_enabled) break; 3999 le_handle_extended_advertisement_report(packet, size); 4000 break; 4001 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4002 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4003 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4004 break; 4005 #endif 4006 #endif 4007 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4008 event_handle_le_connection_complete(packet); 4009 break; 4010 4011 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4012 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4013 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4014 conn = hci_connection_for_handle(handle); 4015 if (!conn) break; 4016 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4017 break; 4018 4019 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4020 // connection 4021 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4022 conn = hci_connection_for_handle(handle); 4023 if (conn) { 4024 // read arguments 4025 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4026 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4027 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4028 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4029 4030 // validate against current connection parameter range 4031 le_connection_parameter_range_t existing_range; 4032 gap_get_connection_parameter_range(&existing_range); 4033 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4034 if (update_parameter){ 4035 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4036 conn->le_conn_interval_min = le_conn_interval_min; 4037 conn->le_conn_interval_max = le_conn_interval_max; 4038 conn->le_conn_latency = le_conn_latency; 4039 conn->le_supervision_timeout = le_supervision_timeout; 4040 } else { 4041 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4042 } 4043 } 4044 break; 4045 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4046 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4047 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4048 conn = hci_connection_for_handle(handle); 4049 if (conn) { 4050 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4051 } 4052 break; 4053 #endif 4054 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4055 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4056 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4057 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4058 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4059 iso_stream = hci_iso_stream_for_con_handle(handle); 4060 btstack_assert(iso_stream != NULL); 4061 // track SDU 4062 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4063 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4064 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4065 // CIS Accept by Peripheral 4066 if (status == ERROR_CODE_SUCCESS){ 4067 if (iso_stream->max_sdu_p_to_c > 0){ 4068 // we're peripheral and we will send data 4069 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4070 } else { 4071 // we're peripheral and we will only receive data 4072 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4073 } 4074 } else { 4075 hci_iso_stream_finalize(iso_stream); 4076 hci_emit_cis_created(HCI_ISO_GROUP_ID_INVALID, handle, status); 4077 } 4078 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4079 } else { 4080 // CIG Setup by Central 4081 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4082 btstack_assert(cig != NULL); 4083 // update iso stream state 4084 if (status == ERROR_CODE_SUCCESS){ 4085 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4086 } else { 4087 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4088 } 4089 // update cig state 4090 uint8_t i; 4091 for (i=0;i<cig->num_cis;i++){ 4092 if (cig->cis_con_handles[i] == handle){ 4093 cig->cis_setup_active[i] = false; 4094 if (status == ERROR_CODE_SUCCESS){ 4095 cig->cis_setup_active[i] = false; 4096 cig->cis_established[i] = true; 4097 } else { 4098 hci_emit_cis_created(cig->cig_id, handle, status); 4099 } 4100 } 4101 } 4102 4103 // trigger iso path setup if complete 4104 bool setup_active = false; 4105 for (i=0;i<cig->num_cis;i++){ 4106 setup_active |= cig->cis_setup_active[i]; 4107 } 4108 if (setup_active == false){ 4109 cig->state_vars.next_cis = 0; 4110 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4111 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4112 } 4113 } 4114 } 4115 break; 4116 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4117 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4118 big = hci_big_for_handle(packet[4]); 4119 if (big != NULL){ 4120 uint8_t status = packet[3]; 4121 if (status == ERROR_CODE_SUCCESS){ 4122 // store bis_con_handles and trigger iso path setup 4123 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4124 uint8_t i; 4125 for (i=0;i<num_bis;i++){ 4126 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4127 big->bis_con_handles[i] = bis_handle; 4128 // assign bis handle 4129 btstack_linked_list_iterator_t it; 4130 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4131 while (btstack_linked_list_iterator_has_next(&it)){ 4132 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4133 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4134 (iso_stream->group_id == big->big_handle)){ 4135 iso_stream->con_handle = bis_handle; 4136 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4137 break; 4138 } 4139 } 4140 } 4141 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4142 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4143 big->state_vars.next_bis = 0; 4144 } 4145 } else { 4146 // create BIG failed or has been stopped by us 4147 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4148 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4149 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4150 hci_emit_big_created(big, status); 4151 } else { 4152 hci_emit_big_terminated(big); 4153 } 4154 } 4155 } 4156 break; 4157 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4158 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4159 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4160 if (big != NULL){ 4161 // finalize associated ISO streams 4162 btstack_linked_list_iterator_t it; 4163 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4164 while (btstack_linked_list_iterator_has_next(&it)){ 4165 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4166 if (iso_stream->group_id == big->big_handle){ 4167 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->con_handle); 4168 btstack_linked_list_iterator_remove(&it); 4169 btstack_memory_hci_iso_stream_free(iso_stream); 4170 } 4171 } 4172 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4173 switch (big->state){ 4174 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4175 hci_emit_big_created(big, big->state_vars.status); 4176 break; 4177 default: 4178 hci_emit_big_terminated(big); 4179 break; 4180 } 4181 } 4182 break; 4183 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4184 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4185 big_sync = hci_big_sync_for_handle(packet[4]); 4186 if (big_sync != NULL){ 4187 uint8_t status = packet[3]; 4188 uint8_t big_handle = packet[4]; 4189 if (status == ERROR_CODE_SUCCESS){ 4190 // store bis_con_handles and trigger iso path setup 4191 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4192 uint8_t i; 4193 for (i=0;i<num_bis;i++){ 4194 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4195 } 4196 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4197 // trigger iso path setup 4198 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4199 big_sync->state_vars.next_bis = 0; 4200 } 4201 } else { 4202 // create BIG Sync failed or has been stopped by us 4203 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4204 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4205 hci_emit_big_sync_created(big_sync, status); 4206 } else { 4207 hci_emit_big_sync_stopped(big_handle); 4208 } 4209 } 4210 } 4211 break; 4212 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4213 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4214 big_sync = hci_big_sync_for_handle(packet[4]); 4215 if (big_sync != NULL){ 4216 uint8_t big_handle = packet[4]; 4217 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4218 hci_emit_big_sync_stopped(big_handle); 4219 } 4220 break; 4221 #endif 4222 default: 4223 break; 4224 } 4225 break; 4226 #endif 4227 case HCI_EVENT_VENDOR_SPECIFIC: 4228 // Vendor specific commands often create vendor specific event instead of num completed packets 4229 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4230 switch (hci_stack->manufacturer){ 4231 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4232 hci_stack->num_cmd_packets = 1; 4233 break; 4234 default: 4235 break; 4236 } 4237 break; 4238 default: 4239 break; 4240 } 4241 4242 handle_event_for_current_stack_state(packet, size); 4243 4244 // notify upper stack 4245 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4246 4247 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4248 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4249 handle = little_endian_read_16(packet, 3); 4250 hci_connection_t * aConn = hci_connection_for_handle(handle); 4251 // discard connection if app did not trigger a reconnect in the event handler 4252 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4253 hci_shutdown_connection(aConn); 4254 } 4255 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4256 hci_controller_dump_packets(); 4257 #endif 4258 } 4259 4260 // execute main loop 4261 hci_run(); 4262 } 4263 4264 #ifdef ENABLE_CLASSIC 4265 4266 #ifdef ENABLE_SCO_OVER_HCI 4267 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4268 static void sco_schedule_tx(hci_connection_t * conn); 4269 4270 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4271 log_debug("SCO TX Timeout"); 4272 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4273 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4274 if (!conn) return; 4275 4276 // trigger send 4277 conn->sco_tx_ready = 1; 4278 // extra packet if CVSD but SCO buffer is too short 4279 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4280 conn->sco_tx_ready++; 4281 } 4282 hci_notify_if_sco_can_send_now(); 4283 } 4284 4285 4286 #define SCO_TX_AFTER_RX_MS (6) 4287 4288 static void sco_schedule_tx(hci_connection_t * conn){ 4289 4290 uint32_t now = btstack_run_loop_get_time_ms(); 4291 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4292 int time_delta_ms = sco_tx_ms - now; 4293 4294 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4295 4296 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4297 btstack_run_loop_remove_timer(timer); 4298 btstack_run_loop_set_timer(timer, time_delta_ms); 4299 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4300 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4301 btstack_run_loop_add_timer(timer); 4302 } 4303 #endif 4304 4305 static void sco_handler(uint8_t * packet, uint16_t size){ 4306 // lookup connection struct 4307 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4308 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4309 if (!conn) return; 4310 4311 #ifdef ENABLE_SCO_OVER_HCI 4312 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4313 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4314 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4315 packet[2] = 0x3c; 4316 memmove(&packet[3], &packet[23], 63); 4317 size = 63; 4318 } 4319 } 4320 4321 if (hci_have_usb_transport()){ 4322 // Nothing to do 4323 } else { 4324 // 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); 4325 if (hci_stack->synchronous_flow_control_enabled == 0){ 4326 uint32_t now = btstack_run_loop_get_time_ms(); 4327 4328 if (!conn->sco_rx_valid){ 4329 // ignore first 10 packets 4330 conn->sco_rx_count++; 4331 // log_debug("sco rx count %u", conn->sco_rx_count); 4332 if (conn->sco_rx_count == 10) { 4333 // use first timestamp as is and pretent it just started 4334 conn->sco_rx_ms = now; 4335 conn->sco_rx_valid = 1; 4336 conn->sco_rx_count = 0; 4337 sco_schedule_tx(conn); 4338 } 4339 } else { 4340 // track expected arrival timme 4341 conn->sco_rx_count++; 4342 conn->sco_rx_ms += 7; 4343 int delta = (int32_t) (now - conn->sco_rx_ms); 4344 if (delta > 0){ 4345 conn->sco_rx_ms++; 4346 } 4347 // log_debug("sco rx %u", conn->sco_rx_ms); 4348 sco_schedule_tx(conn); 4349 } 4350 } 4351 } 4352 #endif 4353 4354 // deliver to app 4355 if (hci_stack->sco_packet_handler) { 4356 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4357 } 4358 4359 #ifdef HAVE_SCO_TRANSPORT 4360 // We can send one packet for each received packet 4361 conn->sco_tx_ready++; 4362 hci_notify_if_sco_can_send_now(); 4363 #endif 4364 4365 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4366 conn->num_packets_completed++; 4367 hci_stack->host_completed_packets = 1; 4368 hci_run(); 4369 #endif 4370 } 4371 #endif 4372 4373 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4374 hci_dump_packet(packet_type, 1, packet, size); 4375 switch (packet_type) { 4376 case HCI_EVENT_PACKET: 4377 event_handler(packet, size); 4378 break; 4379 case HCI_ACL_DATA_PACKET: 4380 acl_handler(packet, size); 4381 break; 4382 #ifdef ENABLE_CLASSIC 4383 case HCI_SCO_DATA_PACKET: 4384 sco_handler(packet, size); 4385 break; 4386 #endif 4387 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4388 case HCI_ISO_DATA_PACKET: 4389 hci_iso_packet_handler(packet, size); 4390 break; 4391 #endif 4392 default: 4393 break; 4394 } 4395 } 4396 4397 /** 4398 * @brief Add event packet handler. 4399 */ 4400 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4401 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4402 } 4403 4404 /** 4405 * @brief Remove event packet handler. 4406 */ 4407 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4408 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4409 } 4410 4411 /** Register HCI packet handlers */ 4412 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4413 hci_stack->acl_packet_handler = handler; 4414 } 4415 4416 #ifdef ENABLE_CLASSIC 4417 /** 4418 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4419 */ 4420 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4421 hci_stack->sco_packet_handler = handler; 4422 } 4423 #endif 4424 4425 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4426 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4427 hci_stack->iso_packet_handler = handler; 4428 } 4429 #endif 4430 4431 static void hci_state_reset(void){ 4432 // no connections yet 4433 hci_stack->connections = NULL; 4434 4435 // keep discoverable/connectable as this has been requested by the client(s) 4436 // hci_stack->discoverable = 0; 4437 // hci_stack->connectable = 0; 4438 // hci_stack->bondable = 1; 4439 // hci_stack->own_addr_type = 0; 4440 4441 // buffer is free 4442 hci_stack->hci_packet_buffer_reserved = false; 4443 4444 // no pending cmds 4445 hci_stack->decline_reason = 0; 4446 4447 hci_stack->secure_connections_active = false; 4448 4449 #ifdef ENABLE_CLASSIC 4450 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4451 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4452 4453 hci_stack->gap_tasks_classic = 4454 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4455 GAP_TASK_SET_CLASS_OF_DEVICE | 4456 GAP_TASK_SET_LOCAL_NAME | 4457 GAP_TASK_SET_EIR_DATA | 4458 GAP_TASK_WRITE_SCAN_ENABLE | 4459 GAP_TASK_WRITE_PAGE_TIMEOUT; 4460 #endif 4461 4462 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4463 hci_stack->classic_read_local_oob_data = false; 4464 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4465 #endif 4466 4467 // LE 4468 #ifdef ENABLE_BLE 4469 memset(hci_stack->le_random_address, 0, 6); 4470 hci_stack->le_random_address_set = 0; 4471 #endif 4472 #ifdef ENABLE_LE_CENTRAL 4473 hci_stack->le_scanning_active = false; 4474 hci_stack->le_scanning_param_update = true; 4475 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4476 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4477 hci_stack->le_whitelist_capacity = 0; 4478 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4479 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4480 #endif 4481 #endif 4482 #ifdef ENABLE_LE_PERIPHERAL 4483 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4484 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4485 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4486 } 4487 if (hci_stack->le_advertisements_data != NULL){ 4488 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4489 } 4490 #endif 4491 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4492 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4493 #endif 4494 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4495 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4496 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4497 #endif 4498 } 4499 4500 #ifdef ENABLE_CLASSIC 4501 /** 4502 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4503 */ 4504 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4505 // store and open remote device db 4506 hci_stack->link_key_db = link_key_db; 4507 if (hci_stack->link_key_db) { 4508 hci_stack->link_key_db->open(); 4509 } 4510 } 4511 #endif 4512 4513 void hci_init(const hci_transport_t *transport, const void *config){ 4514 4515 #ifdef HAVE_MALLOC 4516 if (!hci_stack) { 4517 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4518 } 4519 #else 4520 hci_stack = &hci_stack_static; 4521 #endif 4522 memset(hci_stack, 0, sizeof(hci_stack_t)); 4523 4524 // reference to use transport layer implementation 4525 hci_stack->hci_transport = transport; 4526 4527 // reference to used config 4528 hci_stack->config = config; 4529 4530 // setup pointer for outgoing packet buffer 4531 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4532 4533 // max acl payload size defined in config.h 4534 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4535 4536 // register packet handlers with transport 4537 transport->register_packet_handler(&packet_handler); 4538 4539 hci_stack->state = HCI_STATE_OFF; 4540 4541 // class of device 4542 hci_stack->class_of_device = 0x007a020c; // Smartphone 4543 4544 // bondable by default 4545 hci_stack->bondable = 1; 4546 4547 #ifdef ENABLE_CLASSIC 4548 // classic name 4549 hci_stack->local_name = default_classic_name; 4550 4551 // Master slave policy 4552 hci_stack->master_slave_policy = 1; 4553 4554 // Allow Role Switch 4555 hci_stack->allow_role_switch = 1; 4556 4557 // Default / minimum security level = 2 4558 hci_stack->gap_security_level = LEVEL_2; 4559 4560 // Default Security Mode 4 4561 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4562 4563 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4564 hci_stack->gap_required_encyrption_key_size = 7; 4565 4566 // Link Supervision Timeout 4567 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4568 4569 #endif 4570 4571 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4572 hci_stack->ssp_enable = 1; 4573 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4574 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4575 hci_stack->ssp_auto_accept = 1; 4576 4577 // Secure Connections: enable (requires support from Controller) 4578 hci_stack->secure_connections_enable = true; 4579 4580 // voice setting - signed 16 bit pcm data with CVSD over the air 4581 hci_stack->sco_voice_setting = 0x60; 4582 4583 #ifdef ENABLE_LE_CENTRAL 4584 // connection parameter to use for outgoing connections 4585 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4586 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4587 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4588 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4589 hci_stack->le_connection_latency = 4; // 4 4590 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4591 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4592 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4593 4594 // default LE Scanning 4595 hci_stack->le_scan_type = 0x1; // active 4596 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4597 hci_stack->le_scan_window = 0x30; // 30 ms 4598 #endif 4599 4600 #ifdef ENABLE_LE_PERIPHERAL 4601 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4602 #endif 4603 4604 // connection parameter range used to answer connection parameter update requests in l2cap 4605 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4606 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4607 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4608 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4609 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4610 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4611 4612 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4613 hci_stack->iso_packets_to_queue = 1; 4614 #endif 4615 4616 hci_state_reset(); 4617 } 4618 4619 void hci_deinit(void){ 4620 btstack_run_loop_remove_timer(&hci_stack->timeout); 4621 #ifdef HAVE_MALLOC 4622 if (hci_stack) { 4623 free(hci_stack); 4624 } 4625 #endif 4626 hci_stack = NULL; 4627 4628 #ifdef ENABLE_CLASSIC 4629 disable_l2cap_timeouts = 0; 4630 #endif 4631 } 4632 4633 /** 4634 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4635 */ 4636 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4637 hci_stack->chipset = chipset_driver; 4638 4639 // reset chipset driver - init is also called on power_up 4640 if (hci_stack->chipset && hci_stack->chipset->init){ 4641 hci_stack->chipset->init(hci_stack->config); 4642 } 4643 } 4644 4645 /** 4646 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4647 */ 4648 void hci_set_control(const btstack_control_t *hardware_control){ 4649 // references to used control implementation 4650 hci_stack->control = hardware_control; 4651 // init with transport config 4652 hardware_control->init(hci_stack->config); 4653 } 4654 4655 static void hci_discard_connections(void){ 4656 btstack_linked_list_iterator_t it; 4657 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4658 while (btstack_linked_list_iterator_has_next(&it)){ 4659 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4660 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4661 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4662 hci_shutdown_connection(connection); 4663 } 4664 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4665 while (hci_stack->iso_streams != NULL){ 4666 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4667 } 4668 #endif 4669 } 4670 4671 void hci_close(void){ 4672 4673 #ifdef ENABLE_CLASSIC 4674 // close remote device db 4675 if (hci_stack->link_key_db) { 4676 hci_stack->link_key_db->close(); 4677 } 4678 #endif 4679 4680 hci_discard_connections(); 4681 4682 hci_power_control(HCI_POWER_OFF); 4683 4684 #ifdef HAVE_MALLOC 4685 free(hci_stack); 4686 #endif 4687 hci_stack = NULL; 4688 } 4689 4690 #ifdef HAVE_SCO_TRANSPORT 4691 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4692 hci_stack->sco_transport = sco_transport; 4693 sco_transport->register_packet_handler(&packet_handler); 4694 } 4695 #endif 4696 4697 #ifdef ENABLE_CLASSIC 4698 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4699 // validate ranage and set 4700 if (encryption_key_size < 7) return; 4701 if (encryption_key_size > 16) return; 4702 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4703 } 4704 4705 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4706 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4707 hci_stack->gap_security_mode = security_mode; 4708 return ERROR_CODE_SUCCESS; 4709 } else { 4710 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4711 } 4712 } 4713 4714 gap_security_mode_t gap_get_security_mode(void){ 4715 return hci_stack->gap_security_mode; 4716 } 4717 4718 void gap_set_security_level(gap_security_level_t security_level){ 4719 hci_stack->gap_security_level = security_level; 4720 } 4721 4722 gap_security_level_t gap_get_security_level(void){ 4723 if (hci_stack->gap_secure_connections_only_mode){ 4724 return LEVEL_4; 4725 } 4726 return hci_stack->gap_security_level; 4727 } 4728 4729 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4730 hci_stack->gap_minimal_service_security_level = security_level; 4731 } 4732 4733 void gap_set_secure_connections_only_mode(bool enable){ 4734 hci_stack->gap_secure_connections_only_mode = enable; 4735 } 4736 4737 bool gap_get_secure_connections_only_mode(void){ 4738 return hci_stack->gap_secure_connections_only_mode; 4739 } 4740 #endif 4741 4742 #ifdef ENABLE_CLASSIC 4743 void gap_set_class_of_device(uint32_t class_of_device){ 4744 hci_stack->class_of_device = class_of_device; 4745 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4746 hci_run(); 4747 } 4748 4749 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4750 hci_stack->default_link_policy_settings = default_link_policy_settings; 4751 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4752 hci_run(); 4753 } 4754 4755 void gap_set_allow_role_switch(bool allow_role_switch){ 4756 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4757 } 4758 4759 uint8_t hci_get_allow_role_switch(void){ 4760 return hci_stack->allow_role_switch; 4761 } 4762 4763 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4764 hci_stack->link_supervision_timeout = link_supervision_timeout; 4765 } 4766 4767 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4768 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4769 } 4770 4771 uint16_t hci_automatic_flush_timeout(void){ 4772 return hci_stack->automatic_flush_timeout; 4773 } 4774 4775 void hci_disable_l2cap_timeout_check(void){ 4776 disable_l2cap_timeouts = 1; 4777 } 4778 #endif 4779 4780 #ifndef HAVE_HOST_CONTROLLER_API 4781 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4782 void hci_set_bd_addr(bd_addr_t addr){ 4783 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4784 hci_stack->custom_bd_addr_set = 1; 4785 } 4786 #endif 4787 4788 // State-Module-Driver overview 4789 // state module low-level 4790 // HCI_STATE_OFF off close 4791 // HCI_STATE_INITIALIZING, on open 4792 // HCI_STATE_WORKING, on open 4793 // HCI_STATE_HALTING, on open 4794 // HCI_STATE_SLEEPING, off/sleep close 4795 // HCI_STATE_FALLING_ASLEEP on open 4796 4797 static int hci_power_control_on(void){ 4798 4799 // power on 4800 int err = 0; 4801 if (hci_stack->control && hci_stack->control->on){ 4802 err = (*hci_stack->control->on)(); 4803 } 4804 if (err){ 4805 log_error( "POWER_ON failed"); 4806 hci_emit_hci_open_failed(); 4807 return err; 4808 } 4809 4810 // int chipset driver 4811 if (hci_stack->chipset && hci_stack->chipset->init){ 4812 hci_stack->chipset->init(hci_stack->config); 4813 } 4814 4815 // init transport 4816 if (hci_stack->hci_transport->init){ 4817 hci_stack->hci_transport->init(hci_stack->config); 4818 } 4819 4820 // open transport 4821 err = hci_stack->hci_transport->open(); 4822 if (err){ 4823 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4824 if (hci_stack->control && hci_stack->control->off){ 4825 (*hci_stack->control->off)(); 4826 } 4827 hci_emit_hci_open_failed(); 4828 return err; 4829 } 4830 return 0; 4831 } 4832 4833 static void hci_power_control_off(void){ 4834 4835 log_info("hci_power_control_off"); 4836 4837 // close low-level device 4838 hci_stack->hci_transport->close(); 4839 4840 log_info("hci_power_control_off - hci_transport closed"); 4841 4842 // power off 4843 if (hci_stack->control && hci_stack->control->off){ 4844 (*hci_stack->control->off)(); 4845 } 4846 4847 log_info("hci_power_control_off - control closed"); 4848 4849 hci_stack->state = HCI_STATE_OFF; 4850 } 4851 4852 static void hci_power_control_sleep(void){ 4853 4854 log_info("hci_power_control_sleep"); 4855 4856 #if 0 4857 // don't close serial port during sleep 4858 4859 // close low-level device 4860 hci_stack->hci_transport->close(hci_stack->config); 4861 #endif 4862 4863 // sleep mode 4864 if (hci_stack->control && hci_stack->control->sleep){ 4865 (*hci_stack->control->sleep)(); 4866 } 4867 4868 hci_stack->state = HCI_STATE_SLEEPING; 4869 } 4870 4871 static int hci_power_control_wake(void){ 4872 4873 log_info("hci_power_control_wake"); 4874 4875 // wake on 4876 if (hci_stack->control && hci_stack->control->wake){ 4877 (*hci_stack->control->wake)(); 4878 } 4879 4880 #if 0 4881 // open low-level device 4882 int err = hci_stack->hci_transport->open(hci_stack->config); 4883 if (err){ 4884 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4885 if (hci_stack->control && hci_stack->control->off){ 4886 (*hci_stack->control->off)(); 4887 } 4888 hci_emit_hci_open_failed(); 4889 return err; 4890 } 4891 #endif 4892 4893 return 0; 4894 } 4895 4896 static void hci_power_enter_initializing_state(void){ 4897 // set up state machine 4898 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4899 hci_stack->hci_packet_buffer_reserved = false; 4900 hci_stack->state = HCI_STATE_INITIALIZING; 4901 hci_stack->substate = HCI_INIT_SEND_RESET; 4902 } 4903 4904 static void hci_power_enter_halting_state(void){ 4905 #ifdef ENABLE_BLE 4906 hci_whitelist_free(); 4907 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4908 hci_periodic_advertiser_list_free(); 4909 #endif 4910 #endif 4911 // see hci_run 4912 hci_stack->state = HCI_STATE_HALTING; 4913 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4914 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4915 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4916 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4917 btstack_run_loop_add_timer(&hci_stack->timeout); 4918 } 4919 4920 // returns error 4921 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4922 int err; 4923 switch (power_mode){ 4924 case HCI_POWER_ON: 4925 err = hci_power_control_on(); 4926 if (err != 0) { 4927 log_error("hci_power_control_on() error %d", err); 4928 return err; 4929 } 4930 hci_power_enter_initializing_state(); 4931 break; 4932 case HCI_POWER_OFF: 4933 // do nothing 4934 break; 4935 case HCI_POWER_SLEEP: 4936 // do nothing (with SLEEP == OFF) 4937 break; 4938 default: 4939 btstack_assert(false); 4940 break; 4941 } 4942 return ERROR_CODE_SUCCESS; 4943 } 4944 4945 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4946 switch (power_mode){ 4947 case HCI_POWER_ON: 4948 // do nothing 4949 break; 4950 case HCI_POWER_OFF: 4951 // no connections yet, just turn it off 4952 hci_power_control_off(); 4953 break; 4954 case HCI_POWER_SLEEP: 4955 // no connections yet, just turn it off 4956 hci_power_control_sleep(); 4957 break; 4958 default: 4959 btstack_assert(false); 4960 break; 4961 } 4962 return ERROR_CODE_SUCCESS; 4963 } 4964 4965 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4966 switch (power_mode){ 4967 case HCI_POWER_ON: 4968 // do nothing 4969 break; 4970 case HCI_POWER_OFF: 4971 hci_power_enter_halting_state(); 4972 break; 4973 case HCI_POWER_SLEEP: 4974 // see hci_run 4975 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4976 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4977 break; 4978 default: 4979 btstack_assert(false); 4980 break; 4981 } 4982 return ERROR_CODE_SUCCESS; 4983 } 4984 4985 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4986 switch (power_mode){ 4987 case HCI_POWER_ON: 4988 hci_power_enter_initializing_state(); 4989 break; 4990 case HCI_POWER_OFF: 4991 // do nothing 4992 break; 4993 case HCI_POWER_SLEEP: 4994 // see hci_run 4995 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4996 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4997 break; 4998 default: 4999 btstack_assert(false); 5000 break; 5001 } 5002 return ERROR_CODE_SUCCESS; 5003 } 5004 5005 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5006 switch (power_mode){ 5007 case HCI_POWER_ON: 5008 hci_power_enter_initializing_state(); 5009 break; 5010 case HCI_POWER_OFF: 5011 hci_power_enter_halting_state(); 5012 break; 5013 case HCI_POWER_SLEEP: 5014 // do nothing 5015 break; 5016 default: 5017 btstack_assert(false); 5018 break; 5019 } 5020 return ERROR_CODE_SUCCESS; 5021 } 5022 5023 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5024 int err; 5025 switch (power_mode){ 5026 case HCI_POWER_ON: 5027 err = hci_power_control_wake(); 5028 if (err) return err; 5029 hci_power_enter_initializing_state(); 5030 break; 5031 case HCI_POWER_OFF: 5032 hci_power_enter_halting_state(); 5033 break; 5034 case HCI_POWER_SLEEP: 5035 // do nothing 5036 break; 5037 default: 5038 btstack_assert(false); 5039 break; 5040 } 5041 return ERROR_CODE_SUCCESS; 5042 } 5043 5044 int hci_power_control(HCI_POWER_MODE power_mode){ 5045 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5046 btstack_run_loop_remove_timer(&hci_stack->timeout); 5047 int err = 0; 5048 switch (hci_stack->state){ 5049 case HCI_STATE_OFF: 5050 err = hci_power_control_state_off(power_mode); 5051 break; 5052 case HCI_STATE_INITIALIZING: 5053 err = hci_power_control_state_initializing(power_mode); 5054 break; 5055 case HCI_STATE_WORKING: 5056 err = hci_power_control_state_working(power_mode); 5057 break; 5058 case HCI_STATE_HALTING: 5059 err = hci_power_control_state_halting(power_mode); 5060 break; 5061 case HCI_STATE_FALLING_ASLEEP: 5062 err = hci_power_control_state_falling_asleep(power_mode); 5063 break; 5064 case HCI_STATE_SLEEPING: 5065 err = hci_power_control_state_sleeping(power_mode); 5066 break; 5067 default: 5068 btstack_assert(false); 5069 break; 5070 } 5071 if (err != 0){ 5072 return err; 5073 } 5074 5075 // create internal event 5076 hci_emit_state(); 5077 5078 // trigger next/first action 5079 hci_run(); 5080 5081 return 0; 5082 } 5083 5084 5085 static void hci_halting_run(void) { 5086 5087 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5088 5089 hci_connection_t *connection; 5090 #ifdef ENABLE_BLE 5091 #ifdef ENABLE_LE_PERIPHERAL 5092 bool stop_advertismenets; 5093 #endif 5094 #endif 5095 5096 switch (hci_stack->substate) { 5097 case HCI_HALTING_CLASSIC_STOP: 5098 #ifdef ENABLE_CLASSIC 5099 if (!hci_can_send_command_packet_now()) return; 5100 5101 if (hci_stack->connectable || hci_stack->discoverable){ 5102 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5103 hci_send_cmd(&hci_write_scan_enable, 0); 5104 return; 5105 } 5106 #endif 5107 /* fall through */ 5108 5109 case HCI_HALTING_LE_ADV_STOP: 5110 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5111 5112 #ifdef ENABLE_BLE 5113 #ifdef ENABLE_LE_PERIPHERAL 5114 if (!hci_can_send_command_packet_now()) return; 5115 5116 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5117 5118 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5119 if (hci_extended_advertising_supported()){ 5120 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5121 btstack_linked_list_iterator_t it; 5122 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5123 // stop all periodic advertisements and check if an extended set is active 5124 while (btstack_linked_list_iterator_has_next(&it)){ 5125 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5126 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5127 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5128 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5129 return; 5130 } 5131 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5132 stop_advertismenets = true; 5133 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5134 } 5135 } 5136 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5137 if (stop_advertismenets){ 5138 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5139 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5140 return; 5141 } 5142 } 5143 else 5144 #else /* ENABLE_LE_PERIPHERAL */ 5145 { 5146 if (stop_advertismenets) { 5147 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5148 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5149 return; 5150 } 5151 } 5152 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5153 #endif /* ENABLE_LE_PERIPHERAL */ 5154 #endif /* ENABLE_BLE */ 5155 5156 /* fall through */ 5157 5158 case HCI_HALTING_LE_SCAN_STOP: 5159 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5160 if (!hci_can_send_command_packet_now()) return; 5161 5162 #ifdef ENABLE_BLE 5163 #ifdef ENABLE_LE_CENTRAL 5164 if (hci_stack->le_scanning_active){ 5165 hci_le_scan_stop(); 5166 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5167 return; 5168 } 5169 #endif 5170 #endif 5171 5172 /* fall through */ 5173 5174 case HCI_HALTING_DISCONNECT_ALL: 5175 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5176 if (!hci_can_send_command_packet_now()) return; 5177 5178 // close all open connections 5179 connection = (hci_connection_t *) hci_stack->connections; 5180 if (connection) { 5181 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5182 5183 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5184 5185 // check state 5186 switch(connection->state) { 5187 case SENT_DISCONNECT: 5188 case RECEIVED_DISCONNECTION_COMPLETE: 5189 // wait until connection is gone 5190 return; 5191 default: 5192 break; 5193 } 5194 5195 // finally, send the disconnect command 5196 connection->state = SENT_DISCONNECT; 5197 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5198 return; 5199 } 5200 5201 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5202 // stop BIGs and BIG Syncs 5203 if (hci_stack->le_audio_bigs != NULL){ 5204 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5205 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5206 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5207 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5208 return; 5209 } 5210 if (hci_stack->le_audio_big_syncs != NULL){ 5211 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5212 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5213 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5214 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5215 return; 5216 } 5217 #endif 5218 5219 btstack_run_loop_remove_timer(&hci_stack->timeout); 5220 5221 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5222 log_info("HCI_STATE_HALTING: wait 50 ms"); 5223 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5224 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5225 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5226 btstack_run_loop_add_timer(&hci_stack->timeout); 5227 break; 5228 5229 case HCI_HALTING_CLOSE: 5230 // close left over connections (that had not been properly closed before) 5231 hci_discard_connections(); 5232 5233 log_info("HCI_STATE_HALTING, calling off"); 5234 5235 // switch mode 5236 hci_power_control_off(); 5237 5238 log_info("HCI_STATE_HALTING, emitting state"); 5239 hci_emit_state(); 5240 log_info("HCI_STATE_HALTING, done"); 5241 break; 5242 5243 case HCI_HALTING_W4_CLOSE_TIMER: 5244 // keep waiting 5245 5246 break; 5247 default: 5248 break; 5249 } 5250 }; 5251 5252 static void hci_falling_asleep_run(void){ 5253 hci_connection_t * connection; 5254 switch(hci_stack->substate) { 5255 case HCI_FALLING_ASLEEP_DISCONNECT: 5256 log_info("HCI_STATE_FALLING_ASLEEP"); 5257 // close all open connections 5258 connection = (hci_connection_t *) hci_stack->connections; 5259 if (connection){ 5260 5261 // send disconnect 5262 if (!hci_can_send_command_packet_now()) return; 5263 5264 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5265 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5266 5267 // send disconnected event right away - causes higher layer connections to get closed, too. 5268 hci_shutdown_connection(connection); 5269 return; 5270 } 5271 5272 if (hci_classic_supported()){ 5273 // disable page and inquiry scan 5274 if (!hci_can_send_command_packet_now()) return; 5275 5276 log_info("HCI_STATE_HALTING, disabling inq scans"); 5277 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5278 5279 // continue in next sub state 5280 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5281 break; 5282 } 5283 5284 /* fall through */ 5285 5286 case HCI_FALLING_ASLEEP_COMPLETE: 5287 log_info("HCI_STATE_HALTING, calling sleep"); 5288 // switch mode 5289 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5290 hci_emit_state(); 5291 break; 5292 5293 default: 5294 break; 5295 } 5296 } 5297 5298 #ifdef ENABLE_CLASSIC 5299 5300 static void hci_update_scan_enable(void){ 5301 // 2 = page scan, 1 = inq scan 5302 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5303 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5304 hci_run(); 5305 } 5306 5307 void gap_discoverable_control(uint8_t enable){ 5308 if (enable) enable = 1; // normalize argument 5309 5310 if (hci_stack->discoverable == enable){ 5311 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5312 return; 5313 } 5314 5315 hci_stack->discoverable = enable; 5316 hci_update_scan_enable(); 5317 } 5318 5319 void gap_connectable_control(uint8_t enable){ 5320 if (enable) enable = 1; // normalize argument 5321 5322 // don't emit event 5323 if (hci_stack->connectable == enable) return; 5324 5325 hci_stack->connectable = enable; 5326 hci_update_scan_enable(); 5327 } 5328 #endif 5329 5330 void gap_local_bd_addr(bd_addr_t address_buffer){ 5331 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5332 } 5333 5334 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5335 static void hci_host_num_completed_packets(void){ 5336 5337 // create packet manually as arrays are not supported and num_commands should not get reduced 5338 hci_reserve_packet_buffer(); 5339 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5340 5341 uint16_t size = 0; 5342 uint16_t num_handles = 0; 5343 packet[size++] = 0x35; 5344 packet[size++] = 0x0c; 5345 size++; // skip param len 5346 size++; // skip num handles 5347 5348 // add { handle, packets } entries 5349 btstack_linked_item_t * it; 5350 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5351 hci_connection_t * connection = (hci_connection_t *) it; 5352 if (connection->num_packets_completed){ 5353 little_endian_store_16(packet, size, connection->con_handle); 5354 size += 2; 5355 little_endian_store_16(packet, size, connection->num_packets_completed); 5356 size += 2; 5357 // 5358 num_handles++; 5359 connection->num_packets_completed = 0; 5360 } 5361 } 5362 5363 packet[2] = size - 3; 5364 packet[3] = num_handles; 5365 5366 hci_stack->host_completed_packets = 0; 5367 5368 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5369 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5370 5371 // release packet buffer for synchronous transport implementations 5372 if (hci_transport_synchronous()){ 5373 hci_release_packet_buffer(); 5374 hci_emit_transport_packet_sent(); 5375 } 5376 } 5377 #endif 5378 5379 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5380 UNUSED(ds); 5381 hci_stack->substate = HCI_HALTING_CLOSE; 5382 hci_halting_run(); 5383 } 5384 5385 static bool hci_run_acl_fragments(void){ 5386 if (hci_stack->acl_fragmentation_total_size > 0u) { 5387 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5388 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5389 if (connection) { 5390 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5391 hci_send_acl_packet_fragments(connection); 5392 return true; 5393 } 5394 } else { 5395 // connection gone -> discard further fragments 5396 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5397 hci_stack->acl_fragmentation_total_size = 0; 5398 hci_stack->acl_fragmentation_pos = 0; 5399 } 5400 } 5401 return false; 5402 } 5403 5404 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5405 static bool hci_run_iso_fragments(void){ 5406 if (hci_stack->iso_fragmentation_total_size > 0u) { 5407 // TODO: flow control 5408 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5409 hci_send_iso_packet_fragments(); 5410 return true; 5411 } 5412 } 5413 return false; 5414 } 5415 #endif 5416 5417 #ifdef ENABLE_CLASSIC 5418 5419 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5420 static bool hci_classic_operation_active(void) { 5421 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5422 return true; 5423 } 5424 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5425 return true; 5426 } 5427 btstack_linked_item_t * it; 5428 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5429 hci_connection_t *connection = (hci_connection_t *) it; 5430 switch (connection->state) { 5431 case SENT_CREATE_CONNECTION: 5432 case SENT_CANCEL_CONNECTION: 5433 case SENT_DISCONNECT: 5434 return true; 5435 default: 5436 break; 5437 } 5438 } 5439 return false; 5440 } 5441 #endif 5442 5443 static bool hci_run_general_gap_classic(void){ 5444 5445 // assert stack is working and classic is active 5446 if (hci_classic_supported() == false) return false; 5447 if (hci_stack->state != HCI_STATE_WORKING) return false; 5448 5449 // decline incoming connections 5450 if (hci_stack->decline_reason){ 5451 uint8_t reason = hci_stack->decline_reason; 5452 hci_stack->decline_reason = 0; 5453 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5454 return true; 5455 } 5456 5457 if (hci_stack->gap_tasks_classic != 0){ 5458 hci_run_gap_tasks_classic(); 5459 return true; 5460 } 5461 5462 // start/stop inquiry 5463 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5464 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5465 if (hci_classic_operation_active() == false) 5466 #endif 5467 { 5468 uint8_t duration = hci_stack->inquiry_state; 5469 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5470 if (hci_stack->inquiry_max_period_length != 0){ 5471 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); 5472 } else { 5473 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5474 } 5475 return true; 5476 } 5477 } 5478 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5479 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5480 hci_send_cmd(&hci_inquiry_cancel); 5481 return true; 5482 } 5483 5484 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5485 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5486 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5487 return true; 5488 } 5489 5490 // remote name request 5491 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5492 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5493 if (hci_classic_operation_active() == false) 5494 #endif 5495 { 5496 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5497 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5498 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5499 return true; 5500 } 5501 } 5502 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5503 // Local OOB data 5504 if (hci_stack->classic_read_local_oob_data){ 5505 hci_stack->classic_read_local_oob_data = false; 5506 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5507 hci_send_cmd(&hci_read_local_extended_oob_data); 5508 } else { 5509 hci_send_cmd(&hci_read_local_oob_data); 5510 } 5511 } 5512 #endif 5513 // pairing 5514 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5515 uint8_t state = hci_stack->gap_pairing_state; 5516 uint8_t pin_code[16]; 5517 switch (state){ 5518 case GAP_PAIRING_STATE_SEND_PIN: 5519 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5520 memset(pin_code, 0, 16); 5521 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5522 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5523 break; 5524 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5525 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5526 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5527 break; 5528 case GAP_PAIRING_STATE_SEND_PASSKEY: 5529 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5530 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5531 break; 5532 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5533 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5534 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5535 break; 5536 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5537 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5538 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5539 break; 5540 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5541 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5542 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5543 break; 5544 default: 5545 break; 5546 } 5547 return true; 5548 } 5549 return false; 5550 } 5551 #endif 5552 5553 #ifdef ENABLE_BLE 5554 5555 #ifdef ENABLE_LE_CENTRAL 5556 static void hci_le_scan_stop(void){ 5557 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5558 if (hci_extended_advertising_supported()) { 5559 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5560 } else 5561 #endif 5562 { 5563 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5564 } 5565 } 5566 #endif 5567 5568 #ifdef ENABLE_LE_PERIPHERAL 5569 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5570 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5571 uint8_t operation = 0; 5572 if (pos == 0){ 5573 // first fragment or complete data 5574 operation |= 1; 5575 } 5576 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5577 // last fragment or complete data 5578 operation |= 2; 5579 } 5580 return operation; 5581 } 5582 #endif 5583 #endif 5584 5585 static bool hci_run_general_gap_le(void){ 5586 5587 btstack_linked_list_iterator_t lit; 5588 5589 // Phase 1: collect what to stop 5590 5591 #ifdef ENABLE_LE_CENTRAL 5592 bool scanning_stop = false; 5593 bool connecting_stop = false; 5594 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5595 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5596 bool periodic_sync_stop = false; 5597 #endif 5598 #endif 5599 #endif 5600 5601 #ifdef ENABLE_LE_PERIPHERAL 5602 bool advertising_stop = false; 5603 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5604 le_advertising_set_t * advertising_stop_set = NULL; 5605 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5606 bool periodic_advertising_stop = false; 5607 #endif 5608 #endif 5609 #endif 5610 5611 // check if own address changes 5612 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5613 5614 // check if whitelist needs modification 5615 bool whitelist_modification_pending = false; 5616 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5617 while (btstack_linked_list_iterator_has_next(&lit)){ 5618 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5619 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5620 whitelist_modification_pending = true; 5621 break; 5622 } 5623 } 5624 5625 // check if resolving list needs modification 5626 bool resolving_list_modification_pending = false; 5627 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5628 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5629 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5630 resolving_list_modification_pending = true; 5631 } 5632 #endif 5633 5634 #ifdef ENABLE_LE_CENTRAL 5635 5636 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5637 // check if periodic advertiser list needs modification 5638 bool periodic_list_modification_pending = false; 5639 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5640 while (btstack_linked_list_iterator_has_next(&lit)){ 5641 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5642 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5643 periodic_list_modification_pending = true; 5644 break; 5645 } 5646 } 5647 #endif 5648 5649 // scanning control 5650 if (hci_stack->le_scanning_active) { 5651 // stop if: 5652 // - parameter change required 5653 // - it's disabled 5654 // - whitelist change required but used for scanning 5655 // - resolving list modified 5656 // - own address changes 5657 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5658 if ((hci_stack->le_scanning_param_update) || 5659 !hci_stack->le_scanning_enabled || 5660 (scanning_uses_whitelist && whitelist_modification_pending) || 5661 resolving_list_modification_pending || 5662 random_address_change){ 5663 5664 scanning_stop = true; 5665 } 5666 } 5667 5668 // connecting control 5669 bool connecting_with_whitelist; 5670 switch (hci_stack->le_connecting_state){ 5671 case LE_CONNECTING_DIRECT: 5672 case LE_CONNECTING_WHITELIST: 5673 // stop connecting if: 5674 // - connecting uses white and whitelist modification pending 5675 // - if it got disabled 5676 // - resolving list modified 5677 // - own address changes 5678 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5679 if ((connecting_with_whitelist && whitelist_modification_pending) || 5680 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5681 resolving_list_modification_pending || 5682 random_address_change) { 5683 5684 connecting_stop = true; 5685 } 5686 break; 5687 default: 5688 break; 5689 } 5690 5691 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5692 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5693 // periodic sync control 5694 bool sync_with_advertiser_list; 5695 switch(hci_stack->le_periodic_sync_state){ 5696 case LE_CONNECTING_DIRECT: 5697 case LE_CONNECTING_WHITELIST: 5698 // stop sync if: 5699 // - sync with advertiser list and advertiser list modification pending 5700 // - if it got disabled 5701 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5702 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5703 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5704 periodic_sync_stop = true; 5705 } 5706 break; 5707 default: 5708 break; 5709 } 5710 #endif 5711 #endif 5712 5713 #endif /* ENABLE_LE_CENTRAL */ 5714 5715 #ifdef ENABLE_LE_PERIPHERAL 5716 // le advertisement control 5717 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5718 // stop if: 5719 // - parameter change required 5720 // - random address used in advertising and changes 5721 // - it's disabled 5722 // - whitelist change required but used for advertisement filter policy 5723 // - resolving list modified 5724 // - own address changes 5725 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5726 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5727 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5728 if (advertising_change || 5729 (advertising_uses_random_address && random_address_change) || 5730 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5731 (advertising_uses_whitelist && whitelist_modification_pending) || 5732 resolving_list_modification_pending || 5733 random_address_change) { 5734 5735 advertising_stop = true; 5736 } 5737 } 5738 5739 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5740 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5741 btstack_linked_list_iterator_t it; 5742 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5743 while (btstack_linked_list_iterator_has_next(&it)){ 5744 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5745 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5746 // stop if: 5747 // - parameter change required 5748 // - random address used in connectable advertising and changes 5749 // - it's disabled 5750 // - whitelist change required but used for advertisement filter policy 5751 // - resolving list modified 5752 // - own address changes 5753 // - advertisement set will be removed 5754 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5755 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5756 bool advertising_uses_random_address = 5757 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5758 advertising_connectable; 5759 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5760 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5761 bool advertising_set_random_address_change = 5762 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5763 bool advertising_set_will_be_removed = 5764 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5765 if (advertising_parameter_change || 5766 (advertising_uses_random_address && advertising_set_random_address_change) || 5767 (advertising_enabled == false) || 5768 (advertising_uses_whitelist && whitelist_modification_pending) || 5769 resolving_list_modification_pending || 5770 advertising_set_will_be_removed) { 5771 5772 advertising_stop = true; 5773 advertising_stop_set = advertising_set; 5774 break; 5775 } 5776 } 5777 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5778 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5779 // stop if: 5780 // - it's disabled 5781 // - parameter change required 5782 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5783 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5784 if ((periodic_enabled == false) || periodic_parameter_change){ 5785 periodic_advertising_stop = true; 5786 advertising_stop_set = advertising_set; 5787 } 5788 } 5789 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5790 } 5791 } 5792 #endif 5793 5794 #endif 5795 5796 5797 // Phase 2: stop everything that should be off during modifications 5798 5799 5800 // 2.1 Outgoing connection 5801 #ifdef ENABLE_LE_CENTRAL 5802 if (connecting_stop){ 5803 hci_send_cmd(&hci_le_create_connection_cancel); 5804 return true; 5805 } 5806 #endif 5807 5808 // 2.2 Scanning 5809 #ifdef ENABLE_LE_CENTRAL 5810 if (scanning_stop){ 5811 hci_stack->le_scanning_active = false; 5812 hci_le_scan_stop(); 5813 return true; 5814 } 5815 5816 // 2.3 Periodic Sync 5817 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5818 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5819 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5820 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5821 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5822 return true; 5823 } 5824 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5825 if (periodic_sync_stop){ 5826 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5827 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5828 return true; 5829 } 5830 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5831 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5832 #endif /* ENABLE_LE_CENTRAL */ 5833 5834 // 2.4 Advertising: legacy, extended, periodic 5835 #ifdef ENABLE_LE_PERIPHERAL 5836 if (advertising_stop){ 5837 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5838 if (hci_extended_advertising_supported()) { 5839 uint8_t advertising_stop_handle; 5840 if (advertising_stop_set != NULL){ 5841 advertising_stop_handle = advertising_stop_set->advertising_handle; 5842 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5843 } else { 5844 advertising_stop_handle = 0; 5845 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5846 } 5847 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5848 const uint16_t durations[] = { 0 }; 5849 const uint16_t max_events[] = { 0 }; 5850 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5851 } else 5852 #endif 5853 { 5854 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5855 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5856 } 5857 return true; 5858 } 5859 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5860 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5861 if (periodic_advertising_stop){ 5862 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5863 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5864 return true; 5865 } 5866 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5867 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5868 #endif /* ENABLE_LE_PERIPHERAL */ 5869 5870 5871 // Phase 3: modify 5872 5873 if (random_address_change){ 5874 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5875 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5876 if (hci_extended_advertising_supported()) { 5877 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5878 } 5879 #endif 5880 { 5881 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5882 } 5883 return true; 5884 } 5885 5886 #ifdef ENABLE_LE_CENTRAL 5887 if (hci_stack->le_scanning_param_update){ 5888 hci_stack->le_scanning_param_update = false; 5889 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5890 if (hci_extended_advertising_supported()){ 5891 // prepare arrays for all PHYs 5892 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5893 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5894 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5895 uint8_t scanning_phys = 1; // LE 1M PHY 5896 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5897 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5898 } else 5899 #endif 5900 { 5901 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5902 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5903 } 5904 return true; 5905 } 5906 #endif 5907 5908 #ifdef ENABLE_LE_PERIPHERAL 5909 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5910 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5911 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5912 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5913 if (hci_extended_advertising_supported()){ 5914 // map advertisment type to advertising event properties 5915 uint16_t adv_event_properties = 0; 5916 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5917 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5918 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5919 } 5920 hci_stack->le_advertising_set_in_current_command = 0; 5921 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5922 0, 5923 adv_event_properties, 5924 hci_stack->le_advertisements_interval_min, 5925 hci_stack->le_advertisements_interval_max, 5926 hci_stack->le_advertisements_channel_map, 5927 hci_stack->le_advertisements_own_addr_type, 5928 hci_stack->le_advertisements_direct_address_type, 5929 hci_stack->le_advertisements_direct_address, 5930 hci_stack->le_advertisements_filter_policy, 5931 0x7f, // tx power: no preference 5932 0x01, // primary adv phy: LE 1M 5933 0, // secondary adv max skip 5934 0, // secondary adv phy 5935 0, // adv sid 5936 0 // scan request notification 5937 ); 5938 } 5939 #endif 5940 { 5941 hci_send_cmd(&hci_le_set_advertising_parameters, 5942 hci_stack->le_advertisements_interval_min, 5943 hci_stack->le_advertisements_interval_max, 5944 hci_stack->le_advertisements_type, 5945 hci_stack->le_advertisements_own_addr_type, 5946 hci_stack->le_advertisements_direct_address_type, 5947 hci_stack->le_advertisements_direct_address, 5948 hci_stack->le_advertisements_channel_map, 5949 hci_stack->le_advertisements_filter_policy); 5950 } 5951 return true; 5952 } 5953 5954 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5955 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5956 uint8_t adv_data_clean[31]; 5957 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5958 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5959 hci_stack->le_advertisements_data_len); 5960 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5961 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5962 if (hci_extended_advertising_supported()){ 5963 hci_stack->le_advertising_set_in_current_command = 0; 5964 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5965 } else 5966 #endif 5967 { 5968 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5969 } 5970 return true; 5971 } 5972 5973 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5974 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5975 uint8_t scan_data_clean[31]; 5976 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5977 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5978 hci_stack->le_scan_response_data_len); 5979 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5980 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5981 if (hci_extended_advertising_supported()){ 5982 hci_stack->le_advertising_set_in_current_command = 0; 5983 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5984 } else 5985 #endif 5986 { 5987 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5988 } 5989 return true; 5990 } 5991 5992 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5993 if (hci_extended_advertising_supported()) { 5994 btstack_linked_list_iterator_t it; 5995 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5996 while (btstack_linked_list_iterator_has_next(&it)){ 5997 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5998 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5999 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6000 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6001 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6002 return true; 6003 } 6004 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6005 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6006 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6007 return true; 6008 } 6009 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6010 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6011 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6012 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6013 advertising_set->advertising_handle, 6014 advertising_set->extended_params.advertising_event_properties, 6015 advertising_set->extended_params.primary_advertising_interval_min, 6016 advertising_set->extended_params.primary_advertising_interval_max, 6017 advertising_set->extended_params.primary_advertising_channel_map, 6018 advertising_set->extended_params.own_address_type, 6019 advertising_set->extended_params.peer_address_type, 6020 advertising_set->extended_params.peer_address, 6021 advertising_set->extended_params.advertising_filter_policy, 6022 advertising_set->extended_params.advertising_tx_power, 6023 advertising_set->extended_params.primary_advertising_phy, 6024 advertising_set->extended_params.secondary_advertising_max_skip, 6025 advertising_set->extended_params.secondary_advertising_phy, 6026 advertising_set->extended_params.advertising_sid, 6027 advertising_set->extended_params.scan_request_notification_enable 6028 ); 6029 return true; 6030 } 6031 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6032 uint16_t pos = advertising_set->adv_data_pos; 6033 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6034 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6035 if ((operation & 0x02) != 0){ 6036 // last fragment or complete data 6037 operation |= 2; 6038 advertising_set->adv_data_pos = 0; 6039 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6040 } else { 6041 advertising_set->adv_data_pos += data_to_upload; 6042 } 6043 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6044 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6045 return true; 6046 } 6047 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6048 uint16_t pos = advertising_set->scan_data_pos; 6049 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6050 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6051 if ((operation & 0x02) != 0){ 6052 advertising_set->scan_data_pos = 0; 6053 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6054 } else { 6055 advertising_set->scan_data_pos += data_to_upload; 6056 } 6057 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6058 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6059 return true; 6060 } 6061 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6062 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6063 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6064 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6065 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6066 advertising_set->advertising_handle, 6067 advertising_set->periodic_params.periodic_advertising_interval_min, 6068 advertising_set->periodic_params.periodic_advertising_interval_max, 6069 advertising_set->periodic_params.periodic_advertising_properties); 6070 return true; 6071 } 6072 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6073 uint16_t pos = advertising_set->periodic_data_pos; 6074 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6075 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6076 if ((operation & 0x02) != 0){ 6077 // last fragment or complete data 6078 operation |= 2; 6079 advertising_set->periodic_data_pos = 0; 6080 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6081 } else { 6082 advertising_set->periodic_data_pos += data_to_upload; 6083 } 6084 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6085 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6086 return true; 6087 } 6088 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6089 } 6090 } 6091 #endif 6092 6093 #endif 6094 6095 #ifdef ENABLE_LE_CENTRAL 6096 // if connect with whitelist was active and is not cancelled yet, wait until next time 6097 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6098 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6099 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6100 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6101 #endif 6102 #endif 6103 6104 // LE Whitelist Management 6105 if (whitelist_modification_pending){ 6106 // add/remove entries 6107 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6108 while (btstack_linked_list_iterator_has_next(&lit)){ 6109 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6110 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6111 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6112 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6113 return true; 6114 } 6115 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6116 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6117 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6118 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6119 return true; 6120 } 6121 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6122 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6123 btstack_memory_whitelist_entry_free(entry); 6124 } 6125 } 6126 } 6127 6128 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6129 // LE Resolving List Management 6130 if (resolving_list_supported) { 6131 uint16_t i; 6132 switch (hci_stack->le_resolving_list_state) { 6133 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6134 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6135 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6136 return true; 6137 case LE_RESOLVING_LIST_READ_SIZE: 6138 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6139 hci_send_cmd(&hci_le_read_resolving_list_size); 6140 return true; 6141 case LE_RESOLVING_LIST_SEND_CLEAR: 6142 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6143 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6144 sizeof(hci_stack->le_resolving_list_add_entries)); 6145 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6146 sizeof(hci_stack->le_resolving_list_remove_entries)); 6147 hci_send_cmd(&hci_le_clear_resolving_list); 6148 return true; 6149 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6150 // first remove old entries 6151 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6152 uint8_t offset = i >> 3; 6153 uint8_t mask = 1 << (i & 7); 6154 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6155 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6156 bd_addr_t peer_identity_addreses; 6157 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6158 sm_key_t peer_irk; 6159 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6160 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6161 6162 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6163 // trigger whitelist entry 'update' (work around for controller bug) 6164 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6165 while (btstack_linked_list_iterator_has_next(&lit)) { 6166 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6167 if (entry->address_type != peer_identity_addr_type) continue; 6168 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6169 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6170 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6171 } 6172 #endif 6173 6174 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6175 peer_identity_addreses); 6176 return true; 6177 } 6178 6179 // then add new entries 6180 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6181 uint8_t offset = i >> 3; 6182 uint8_t mask = 1 << (i & 7); 6183 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6184 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6185 bd_addr_t peer_identity_addreses; 6186 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6187 sm_key_t peer_irk; 6188 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6189 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6190 if (btstack_is_null(peer_irk, 16)) continue; 6191 const uint8_t *local_irk = gap_get_persistent_irk(); 6192 // command uses format specifier 'P' that stores 16-byte value without flip 6193 uint8_t local_irk_flipped[16]; 6194 uint8_t peer_irk_flipped[16]; 6195 reverse_128(local_irk, local_irk_flipped); 6196 reverse_128(peer_irk, peer_irk_flipped); 6197 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6198 peer_irk_flipped, local_irk_flipped); 6199 return true; 6200 } 6201 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6202 break; 6203 6204 default: 6205 break; 6206 } 6207 } 6208 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6209 #endif 6210 6211 #ifdef ENABLE_LE_CENTRAL 6212 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6213 // LE Whitelist Management 6214 if (periodic_list_modification_pending){ 6215 // add/remove entries 6216 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6217 while (btstack_linked_list_iterator_has_next(&lit)){ 6218 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6219 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6220 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6221 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6222 return true; 6223 } 6224 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6225 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6226 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6227 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6228 return true; 6229 } 6230 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6231 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6232 btstack_memory_periodic_advertiser_list_entry_free(entry); 6233 } 6234 } 6235 } 6236 #endif 6237 #endif 6238 6239 #ifdef ENABLE_LE_CENTRAL 6240 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6241 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6242 if (hci_stack->le_past_set_default_params){ 6243 hci_stack->le_past_set_default_params = false; 6244 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6245 hci_stack->le_past_mode, 6246 hci_stack->le_past_skip, 6247 hci_stack->le_past_sync_timeout, 6248 hci_stack->le_past_cte_type); 6249 return true; 6250 } 6251 #endif 6252 #endif 6253 #endif 6254 6255 // post-pone all actions until stack is fully working 6256 if (hci_stack->state != HCI_STATE_WORKING) return false; 6257 6258 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6259 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6260 6261 // Phase 4: restore state 6262 6263 #ifdef ENABLE_LE_CENTRAL 6264 // re-start scanning 6265 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6266 hci_stack->le_scanning_active = true; 6267 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6268 if (hci_extended_advertising_supported()){ 6269 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6270 } else 6271 #endif 6272 { 6273 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6274 } 6275 return true; 6276 } 6277 #endif 6278 6279 #ifdef ENABLE_LE_CENTRAL 6280 // re-start connecting 6281 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6282 bd_addr_t null_addr; 6283 memset(null_addr, 0, 6); 6284 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6285 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6286 hci_send_cmd(&hci_le_create_connection, 6287 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 6288 hci_stack->le_connection_scan_window, // scan interval: 30 ms 6289 1, // use whitelist 6290 0, // peer address type 6291 null_addr, // peer bd addr 6292 hci_stack->le_connection_own_addr_type, // our addr type: 6293 hci_stack->le_connection_interval_min, // conn interval min 6294 hci_stack->le_connection_interval_max, // conn interval max 6295 hci_stack->le_connection_latency, // conn latency 6296 hci_stack->le_supervision_timeout, // conn latency 6297 hci_stack->le_minimum_ce_length, // min ce length 6298 hci_stack->le_maximum_ce_length // max ce length 6299 ); 6300 return true; 6301 } 6302 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6303 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6304 switch(hci_stack->le_periodic_sync_request){ 6305 case LE_CONNECTING_DIRECT: 6306 case LE_CONNECTING_WHITELIST: 6307 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6308 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6309 hci_stack->le_periodic_sync_options, 6310 hci_stack->le_periodic_sync_advertising_sid, 6311 hci_stack->le_periodic_sync_advertiser_address_type, 6312 hci_stack->le_periodic_sync_advertiser_address, 6313 hci_stack->le_periodic_sync_skip, 6314 hci_stack->le_periodic_sync_timeout, 6315 hci_stack->le_periodic_sync_cte_type); 6316 return true; 6317 default: 6318 break; 6319 } 6320 } 6321 #endif 6322 #endif 6323 6324 #ifdef ENABLE_LE_PERIPHERAL 6325 // re-start advertising 6326 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6327 // check if advertisements should be enabled given 6328 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6329 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6330 6331 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6332 if (hci_extended_advertising_supported()){ 6333 const uint8_t advertising_handles[] = { 0 }; 6334 const uint16_t durations[] = { 0 }; 6335 const uint16_t max_events[] = { 0 }; 6336 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6337 } else 6338 #endif 6339 { 6340 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6341 } 6342 return true; 6343 } 6344 6345 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6346 if (hci_extended_advertising_supported()) { 6347 btstack_linked_list_iterator_t it; 6348 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6349 while (btstack_linked_list_iterator_has_next(&it)) { 6350 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6351 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6352 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6353 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6354 const uint16_t durations[] = { advertising_set->enable_timeout }; 6355 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6356 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6357 return true; 6358 } 6359 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6360 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6361 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6362 uint8_t enable = 1; 6363 if (advertising_set->periodic_include_adi){ 6364 enable |= 2; 6365 } 6366 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6367 return true; 6368 } 6369 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6370 } 6371 } 6372 #endif 6373 #endif 6374 6375 return false; 6376 } 6377 6378 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6379 static bool hci_run_iso_tasks(void){ 6380 btstack_linked_list_iterator_t it; 6381 6382 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6383 return false; 6384 } 6385 6386 // BIG 6387 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6388 while (btstack_linked_list_iterator_has_next(&it)){ 6389 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6390 switch (big->state){ 6391 case LE_AUDIO_BIG_STATE_CREATE: 6392 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6393 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6394 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6395 hci_send_cmd(&hci_le_create_big, 6396 big->params->big_handle, 6397 big->params->advertising_handle, 6398 big->params->num_bis, 6399 big->params->sdu_interval_us, 6400 big->params->max_sdu, 6401 big->params->max_transport_latency_ms, 6402 big->params->rtn, 6403 big->params->phy, 6404 big->params->packing, 6405 big->params->framing, 6406 big->params->encryption, 6407 big->params->broadcast_code); 6408 return true; 6409 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6410 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6411 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, 0, 0, 0, 0, 0, NULL); 6412 return true; 6413 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6414 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6415 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6416 return true; 6417 case LE_AUDIO_BIG_STATE_TERMINATE: 6418 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6419 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6420 return true; 6421 default: 6422 break; 6423 } 6424 } 6425 6426 // BIG Sync 6427 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6428 while (btstack_linked_list_iterator_has_next(&it)){ 6429 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6430 switch (big_sync->state){ 6431 case LE_AUDIO_BIG_STATE_CREATE: 6432 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6433 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6434 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6435 hci_send_cmd(&hci_le_big_create_sync, 6436 big_sync->params->big_handle, 6437 big_sync->params->sync_handle, 6438 big_sync->params->encryption, 6439 big_sync->params->broadcast_code, 6440 big_sync->params->mse, 6441 big_sync->params->big_sync_timeout_10ms, 6442 big_sync->params->num_bis, 6443 big_sync->params->bis_indices); 6444 return true; 6445 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6446 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6447 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, 0, 0, 0, 0, 0, NULL); 6448 return true; 6449 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6450 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6451 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6452 return true; 6453 case LE_AUDIO_BIG_STATE_TERMINATE: 6454 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6455 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6456 return true; 6457 default: 6458 break; 6459 } 6460 } 6461 6462 // CIG 6463 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6464 while (btstack_linked_list_iterator_has_next(&it)) { 6465 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6466 uint8_t i; 6467 // Set CIG Parameters 6468 uint8_t cis_id[MAX_NR_CIS]; 6469 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6470 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6471 uint8_t phy_c_to_p[MAX_NR_CIS]; 6472 uint8_t phy_p_to_c[MAX_NR_CIS]; 6473 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6474 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6475 switch (cig->state) { 6476 case LE_AUDIO_CIG_STATE_CREATE: 6477 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6478 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6479 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6480 le_audio_cig_params_t * params = cig->params; 6481 for (i = 0; i < params->num_cis; i++) { 6482 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6483 cis_id[i] = cis_params->cis_id; 6484 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6485 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6486 phy_c_to_p[i] = cis_params->phy_c_to_p; 6487 phy_p_to_c[i] = cis_params->phy_p_to_c; 6488 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6489 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6490 } 6491 hci_send_cmd(&hci_le_set_cig_parameters, 6492 cig->cig_id, 6493 params->sdu_interval_c_to_p, 6494 params->sdu_interval_p_to_c, 6495 params->worst_case_sca, 6496 params->packing, 6497 params->framing, 6498 params->max_transport_latency_c_to_p, 6499 params->max_transport_latency_p_to_c, 6500 params->num_cis, 6501 cis_id, 6502 max_sdu_c_to_p, 6503 max_sdu_p_to_c, 6504 phy_c_to_p, 6505 phy_p_to_c, 6506 rtn_c_to_p, 6507 rtn_p_to_c 6508 ); 6509 return true; 6510 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6511 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6512 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6513 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6514 for (i=0;i<cig->num_cis;i++){ 6515 cig->cis_setup_active[i] = true; 6516 } 6517 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6518 return true; 6519 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6520 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6521 // find next path to setup 6522 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6523 if (cig->cis_established[cis_index] == false) { 6524 continue; 6525 } 6526 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6527 bool setup = true; 6528 if (cis_direction == 0){ 6529 // 0 - input - host to controller 6530 // we are central => central to peripheral 6531 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6532 } else { 6533 // 1 - output - controller to host 6534 // we are central => peripheral to central 6535 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6536 } 6537 if (setup){ 6538 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6539 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6540 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6541 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6542 return true; 6543 } 6544 cig->state_vars.next_cis++; 6545 } 6546 // emit done 6547 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6548 default: 6549 break; 6550 } 6551 } 6552 6553 // CIS Accept/Reject 6554 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6555 while (btstack_linked_list_iterator_has_next(&it)) { 6556 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6557 hci_con_handle_t con_handle; 6558 switch (iso_stream->state){ 6559 case HCI_ISO_STREAM_W2_ACCEPT: 6560 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6561 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6562 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6563 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->con_handle); 6564 return true; 6565 case HCI_ISO_STREAM_W2_REJECT: 6566 con_handle = iso_stream->con_handle; 6567 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6568 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6569 hci_iso_stream_finalize(iso_stream); 6570 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6571 return true; 6572 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6573 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6574 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6575 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6576 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6577 break; 6578 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6579 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6580 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6581 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6582 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6583 break; 6584 default: 6585 break; 6586 } 6587 } 6588 6589 return false; 6590 } 6591 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6592 #endif 6593 6594 static bool hci_run_general_pending_commands(void){ 6595 btstack_linked_item_t * it; 6596 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6597 hci_connection_t * connection = (hci_connection_t *) it; 6598 6599 switch(connection->state){ 6600 case SEND_CREATE_CONNECTION: 6601 switch(connection->address_type){ 6602 #ifdef ENABLE_CLASSIC 6603 case BD_ADDR_TYPE_ACL: 6604 log_info("sending hci_create_connection"); 6605 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6606 break; 6607 #endif 6608 default: 6609 #ifdef ENABLE_BLE 6610 #ifdef ENABLE_LE_CENTRAL 6611 log_info("sending hci_le_create_connection"); 6612 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6613 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6614 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6615 if (hci_extended_advertising_supported()) { 6616 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6617 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6618 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6619 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6620 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6621 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6622 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6623 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6624 hci_send_cmd(&hci_le_extended_create_connection, 6625 0, // don't use whitelist 6626 hci_stack->le_connection_own_addr_type, // our addr type: 6627 connection->address_type, // peer address type 6628 connection->address, // peer bd addr 6629 1, // initiating PHY - 1M 6630 le_connection_scan_interval, // conn scan interval 6631 le_connection_scan_window, // conn scan windows 6632 le_connection_interval_min, // conn interval min 6633 le_connection_interval_max, // conn interval max 6634 le_connection_latency, // conn latency 6635 le_supervision_timeout, // conn latency 6636 le_minimum_ce_length, // min ce length 6637 le_maximum_ce_length // max ce length 6638 ); } 6639 else 6640 #endif 6641 { 6642 hci_send_cmd(&hci_le_create_connection, 6643 hci_stack->le_connection_scan_interval, // conn scan interval 6644 hci_stack->le_connection_scan_window, // conn scan windows 6645 0, // don't use whitelist 6646 connection->address_type, // peer address type 6647 connection->address, // peer bd addr 6648 hci_stack->le_connection_own_addr_type, // our addr type: 6649 hci_stack->le_connection_interval_min, // conn interval min 6650 hci_stack->le_connection_interval_max, // conn interval max 6651 hci_stack->le_connection_latency, // conn latency 6652 hci_stack->le_supervision_timeout, // conn latency 6653 hci_stack->le_minimum_ce_length, // min ce length 6654 hci_stack->le_maximum_ce_length // max ce length 6655 ); 6656 } 6657 connection->state = SENT_CREATE_CONNECTION; 6658 #endif 6659 #endif 6660 break; 6661 } 6662 return true; 6663 6664 #ifdef ENABLE_CLASSIC 6665 case RECEIVED_CONNECTION_REQUEST: 6666 connection->role = HCI_ROLE_SLAVE; 6667 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6668 log_info("sending hci_accept_connection_request"); 6669 connection->state = ACCEPTED_CONNECTION_REQUEST; 6670 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6671 return true; 6672 } 6673 break; 6674 #endif 6675 case SEND_DISCONNECT: 6676 connection->state = SENT_DISCONNECT; 6677 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6678 return true; 6679 6680 default: 6681 break; 6682 } 6683 6684 // no further commands if connection is about to get shut down 6685 if (connection->state == SENT_DISCONNECT) continue; 6686 6687 #ifdef ENABLE_CLASSIC 6688 6689 // Handling link key request requires remote supported features 6690 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6691 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6692 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6693 6694 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6695 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6696 if (have_link_key && security_level_sufficient){ 6697 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6698 } else { 6699 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6700 } 6701 return true; 6702 } 6703 6704 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6705 log_info("denying to pin request"); 6706 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6707 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6708 return true; 6709 } 6710 6711 // security assessment requires remote features 6712 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6713 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6714 hci_ssp_assess_security_on_io_cap_request(connection); 6715 // 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 6716 } 6717 6718 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6719 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6720 // set authentication requirements: 6721 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6722 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6723 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6724 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6725 authreq |= 1; 6726 } 6727 bool bonding = hci_stack->bondable; 6728 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6729 // if we have received IO Cap Response, we're in responder role 6730 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6731 if (bonding && !remote_bonding){ 6732 log_info("Remote not bonding, dropping local flag"); 6733 bonding = false; 6734 } 6735 } 6736 if (bonding){ 6737 if (connection->bonding_flags & BONDING_DEDICATED){ 6738 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6739 } else { 6740 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6741 } 6742 } 6743 uint8_t have_oob_data = 0; 6744 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6745 if (connection->classic_oob_c_192 != NULL){ 6746 have_oob_data |= 1; 6747 } 6748 if (connection->classic_oob_c_256 != NULL){ 6749 have_oob_data |= 2; 6750 } 6751 #endif 6752 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6753 return true; 6754 } 6755 6756 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6757 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6758 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6759 return true; 6760 } 6761 6762 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6763 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6764 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6765 const uint8_t zero[16] = { 0 }; 6766 const uint8_t * r_192 = zero; 6767 const uint8_t * c_192 = zero; 6768 const uint8_t * r_256 = zero; 6769 const uint8_t * c_256 = zero; 6770 // verify P-256 OOB 6771 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6772 c_256 = connection->classic_oob_c_256; 6773 if (connection->classic_oob_r_256 != NULL) { 6774 r_256 = connection->classic_oob_r_256; 6775 } 6776 } 6777 // verify P-192 OOB 6778 if ((connection->classic_oob_c_192 != NULL)) { 6779 c_192 = connection->classic_oob_c_192; 6780 if (connection->classic_oob_r_192 != NULL) { 6781 r_192 = connection->classic_oob_r_192; 6782 } 6783 } 6784 6785 // assess security 6786 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6787 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6788 if (need_level_4 && !can_reach_level_4){ 6789 log_info("Level 4 required, but not possible -> abort"); 6790 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6791 // send oob negative reply 6792 c_256 = NULL; 6793 c_192 = NULL; 6794 } 6795 6796 // Reply 6797 if (c_256 != zero) { 6798 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6799 } else if (c_192 != zero){ 6800 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6801 } else { 6802 hci_stack->classic_oob_con_handle = connection->con_handle; 6803 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6804 } 6805 return true; 6806 } 6807 #endif 6808 6809 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6810 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6811 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6812 return true; 6813 } 6814 6815 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6816 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6817 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6818 return true; 6819 } 6820 6821 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6822 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6823 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6824 return true; 6825 } 6826 6827 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6828 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6829 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6830 connection->state = SENT_DISCONNECT; 6831 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6832 return true; 6833 } 6834 6835 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6836 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6837 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6838 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6839 return true; 6840 } 6841 6842 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6843 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6844 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6845 return true; 6846 } 6847 6848 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6849 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6850 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6851 return true; 6852 } 6853 6854 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6855 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6856 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6857 return true; 6858 } 6859 6860 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6861 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6862 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6863 return true; 6864 } 6865 6866 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6867 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6868 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6869 return true; 6870 } 6871 #endif 6872 6873 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6874 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6875 #ifdef ENABLE_CLASSIC 6876 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6877 #endif 6878 if (connection->state != SENT_DISCONNECT){ 6879 connection->state = SENT_DISCONNECT; 6880 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6881 return true; 6882 } 6883 } 6884 6885 #ifdef ENABLE_CLASSIC 6886 uint16_t sniff_min_interval; 6887 switch (connection->sniff_min_interval){ 6888 case 0: 6889 break; 6890 case 0xffff: 6891 connection->sniff_min_interval = 0; 6892 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6893 return true; 6894 default: 6895 sniff_min_interval = connection->sniff_min_interval; 6896 connection->sniff_min_interval = 0; 6897 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6898 return true; 6899 } 6900 6901 if (connection->sniff_subrating_max_latency != 0xffff){ 6902 uint16_t max_latency = connection->sniff_subrating_max_latency; 6903 connection->sniff_subrating_max_latency = 0; 6904 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6905 return true; 6906 } 6907 6908 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6909 uint8_t service_type = (uint8_t) connection->qos_service_type; 6910 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6911 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); 6912 return true; 6913 } 6914 6915 if (connection->request_role != HCI_ROLE_INVALID){ 6916 hci_role_t role = connection->request_role; 6917 connection->request_role = HCI_ROLE_INVALID; 6918 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6919 return true; 6920 } 6921 #endif 6922 6923 if (connection->gap_connection_tasks != 0){ 6924 #ifdef ENABLE_CLASSIC 6925 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6926 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6927 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6928 return true; 6929 } 6930 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6931 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6932 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6933 return true; 6934 } 6935 #endif 6936 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6937 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6938 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6939 return true; 6940 } 6941 #ifdef ENABLE_BLE 6942 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 6943 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 6944 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 6945 return true; 6946 } 6947 #endif 6948 } 6949 6950 #ifdef ENABLE_BLE 6951 switch (connection->le_con_parameter_update_state){ 6952 // response to L2CAP CON PARAMETER UPDATE REQUEST 6953 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6954 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6955 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6956 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6957 0x0000, 0xffff); 6958 return true; 6959 case CON_PARAMETER_UPDATE_REPLY: 6960 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6961 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6962 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6963 0x0000, 0xffff); 6964 return true; 6965 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6966 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6967 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6968 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6969 return true; 6970 default: 6971 break; 6972 } 6973 if (connection->le_phy_update_all_phys != 0xffu){ 6974 uint8_t all_phys = connection->le_phy_update_all_phys; 6975 connection->le_phy_update_all_phys = 0xff; 6976 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); 6977 return true; 6978 } 6979 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6980 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 6981 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 6982 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 6983 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 6984 return true; 6985 } 6986 #endif 6987 #endif 6988 } 6989 return false; 6990 } 6991 6992 static void hci_run(void){ 6993 6994 // stack state sub statemachines 6995 switch (hci_stack->state) { 6996 case HCI_STATE_INITIALIZING: 6997 hci_initializing_run(); 6998 break; 6999 case HCI_STATE_HALTING: 7000 hci_halting_run(); 7001 break; 7002 case HCI_STATE_FALLING_ASLEEP: 7003 hci_falling_asleep_run(); 7004 break; 7005 default: 7006 break; 7007 } 7008 7009 // allow to run after initialization to working transition 7010 if (hci_stack->state != HCI_STATE_WORKING){ 7011 return; 7012 } 7013 7014 bool done; 7015 7016 // send continuation fragments first, as they block the prepared packet buffer 7017 done = hci_run_acl_fragments(); 7018 if (done) return; 7019 7020 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7021 done = hci_run_iso_fragments(); 7022 if (done) return; 7023 #endif 7024 7025 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7026 // send host num completed packets next as they don't require num_cmd_packets > 0 7027 if (!hci_can_send_comand_packet_transport()) return; 7028 if (hci_stack->host_completed_packets){ 7029 hci_host_num_completed_packets(); 7030 return; 7031 } 7032 #endif 7033 7034 if (!hci_can_send_command_packet_now()) return; 7035 7036 // global/non-connection oriented commands 7037 7038 7039 #ifdef ENABLE_CLASSIC 7040 // general gap classic 7041 done = hci_run_general_gap_classic(); 7042 if (done) return; 7043 #endif 7044 7045 #ifdef ENABLE_BLE 7046 // general gap le 7047 done = hci_run_general_gap_le(); 7048 if (done) return; 7049 7050 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7051 // ISO related tasks, e.g. BIG create/terminate/sync 7052 done = hci_run_iso_tasks(); 7053 if (done) return; 7054 #endif 7055 #endif 7056 7057 // send pending HCI commands 7058 hci_run_general_pending_commands(); 7059 } 7060 7061 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7062 // house-keeping 7063 7064 #ifdef ENABLE_CLASSIC 7065 bd_addr_t addr; 7066 hci_connection_t * conn; 7067 #endif 7068 #ifdef ENABLE_LE_CENTRAL 7069 uint8_t initiator_filter_policy; 7070 #endif 7071 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7072 uint8_t i; 7073 uint8_t num_cis; 7074 hci_con_handle_t cis_handle; 7075 uint8_t status; 7076 #endif 7077 7078 uint16_t opcode = little_endian_read_16(packet, 0); 7079 switch (opcode) { 7080 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7081 hci_stack->loopback_mode = packet[3]; 7082 break; 7083 7084 #ifdef ENABLE_CLASSIC 7085 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7086 reverse_bd_addr(&packet[3], addr); 7087 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7088 7089 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7090 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7091 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7092 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7093 } 7094 7095 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7096 if (!conn) { 7097 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7098 if (!conn) { 7099 // notify client that alloc failed 7100 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7101 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7102 } 7103 conn->state = SEND_CREATE_CONNECTION; 7104 conn->role = HCI_ROLE_MASTER; 7105 } 7106 7107 log_info("conn state %u", conn->state); 7108 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7109 switch (conn->state) { 7110 // if connection active exists 7111 case OPEN: 7112 // and OPEN, emit connection complete command 7113 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7114 // packet not sent to controller 7115 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7116 case RECEIVED_DISCONNECTION_COMPLETE: 7117 // create connection triggered in disconnect complete event, let's do it now 7118 break; 7119 case SEND_CREATE_CONNECTION: 7120 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7121 if (hci_classic_operation_active()){ 7122 return ERROR_CODE_SUCCESS; 7123 } 7124 #endif 7125 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7126 break; 7127 default: 7128 // otherwise, just ignore as it is already in the open process 7129 // packet not sent to controller 7130 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7131 } 7132 conn->state = SENT_CREATE_CONNECTION; 7133 7134 // track outgoing connection 7135 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7136 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7137 break; 7138 7139 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7140 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7141 // setup_synchronous_connection? Voice setting at offset 22 7142 // TODO: compare to current setting if sco connection already active 7143 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7144 break; 7145 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7146 // accept_synchronous_connection? Voice setting at offset 18 7147 // TODO: compare to current setting if sco connection already active 7148 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7149 // track outgoing connection 7150 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7151 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 7152 break; 7153 #endif 7154 #endif 7155 7156 #ifdef ENABLE_BLE 7157 #ifdef ENABLE_LE_CENTRAL 7158 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7159 // white list used? 7160 initiator_filter_policy = packet[7]; 7161 switch (initiator_filter_policy) { 7162 case 0: 7163 // whitelist not used 7164 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7165 break; 7166 case 1: 7167 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7168 break; 7169 default: 7170 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7171 break; 7172 } 7173 // track outgoing connection 7174 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 7175 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7176 break; 7177 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7178 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7179 break; 7180 #endif 7181 #endif /* ENABLE_BLE */ 7182 default: 7183 break; 7184 } 7185 7186 hci_stack->num_cmd_packets--; 7187 7188 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7189 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7190 if (err != 0){ 7191 return ERROR_CODE_HARDWARE_FAILURE; 7192 } 7193 return ERROR_CODE_SUCCESS; 7194 } 7195 7196 // disconnect because of security block 7197 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7198 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7199 if (!connection) return; 7200 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7201 } 7202 7203 7204 // Configure Secure Simple Pairing 7205 7206 #ifdef ENABLE_CLASSIC 7207 7208 // enable will enable SSP during init 7209 void gap_ssp_set_enable(int enable){ 7210 hci_stack->ssp_enable = enable; 7211 } 7212 7213 static int hci_local_ssp_activated(void){ 7214 return gap_ssp_supported() && hci_stack->ssp_enable; 7215 } 7216 7217 // if set, BTstack will respond to io capability request using authentication requirement 7218 void gap_ssp_set_io_capability(int io_capability){ 7219 hci_stack->ssp_io_capability = io_capability; 7220 } 7221 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7222 hci_stack->ssp_authentication_requirement = authentication_requirement; 7223 } 7224 7225 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7226 void gap_ssp_set_auto_accept(int auto_accept){ 7227 hci_stack->ssp_auto_accept = auto_accept; 7228 } 7229 7230 void gap_secure_connections_enable(bool enable){ 7231 hci_stack->secure_connections_enable = enable; 7232 } 7233 bool gap_secure_connections_active(void){ 7234 return hci_stack->secure_connections_active; 7235 } 7236 7237 #endif 7238 7239 // va_list part of hci_send_cmd 7240 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7241 if (!hci_can_send_command_packet_now()){ 7242 log_error("hci_send_cmd called but cannot send packet now"); 7243 return ERROR_CODE_COMMAND_DISALLOWED; 7244 } 7245 7246 // for HCI INITIALIZATION 7247 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7248 hci_stack->last_cmd_opcode = cmd->opcode; 7249 7250 hci_reserve_packet_buffer(); 7251 uint8_t * packet = hci_stack->hci_packet_buffer; 7252 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7253 uint8_t status = hci_send_cmd_packet(packet, size); 7254 7255 // release packet buffer on error or for synchronous transport implementations 7256 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7257 hci_release_packet_buffer(); 7258 hci_emit_transport_packet_sent(); 7259 } 7260 7261 return status; 7262 } 7263 7264 /** 7265 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7266 */ 7267 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7268 va_list argptr; 7269 va_start(argptr, cmd); 7270 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7271 va_end(argptr); 7272 return status; 7273 } 7274 7275 // Create various non-HCI events. 7276 // TODO: generalize, use table similar to hci_create_command 7277 7278 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7279 // dump packet 7280 if (dump) { 7281 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7282 } 7283 7284 // dispatch to all event handlers 7285 btstack_linked_list_iterator_t it; 7286 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7287 while (btstack_linked_list_iterator_has_next(&it)){ 7288 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7289 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7290 } 7291 } 7292 7293 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7294 if (!hci_stack->acl_packet_handler) return; 7295 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7296 } 7297 7298 #ifdef ENABLE_CLASSIC 7299 static void hci_notify_if_sco_can_send_now(void){ 7300 // notify SCO sender if waiting 7301 if (!hci_stack->sco_waiting_for_can_send_now) return; 7302 if (hci_can_send_sco_packet_now()){ 7303 hci_stack->sco_waiting_for_can_send_now = 0; 7304 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7305 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7306 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7307 } 7308 } 7309 7310 // parsing end emitting has been merged to reduce code size 7311 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7312 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7313 7314 uint8_t * eir_data; 7315 ad_context_t context; 7316 const uint8_t * name; 7317 uint8_t name_len; 7318 7319 if (size < 3) return; 7320 7321 int event_type = hci_event_packet_get_type(packet); 7322 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7323 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7324 7325 switch (event_type){ 7326 case HCI_EVENT_INQUIRY_RESULT: 7327 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7328 if (size != (3 + (num_responses * 14))) return; 7329 break; 7330 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7331 if (size != 257) return; 7332 if (num_responses != 1) return; 7333 break; 7334 default: 7335 return; 7336 } 7337 7338 // event[1] is set at the end 7339 int i; 7340 for (i=0; i<num_responses;i++){ 7341 memset(event, 0, sizeof(event)); 7342 event[0] = GAP_EVENT_INQUIRY_RESULT; 7343 uint8_t event_size = 27; // if name is not set by EIR 7344 7345 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7346 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7347 (void)memcpy(&event[9], 7348 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7349 3); // class of device 7350 (void)memcpy(&event[12], 7351 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7352 2); // clock offset 7353 7354 switch (event_type){ 7355 case HCI_EVENT_INQUIRY_RESULT: 7356 // 14,15,16,17 = 0, size 18 7357 break; 7358 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7359 event[14] = 1; 7360 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7361 // 16,17 = 0, size 18 7362 break; 7363 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7364 event[14] = 1; 7365 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7366 // EIR packets only contain a single inquiry response 7367 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7368 name = NULL; 7369 // Iterate over EIR data 7370 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7371 uint8_t data_type = ad_iterator_get_data_type(&context); 7372 uint8_t data_size = ad_iterator_get_data_len(&context); 7373 const uint8_t * data = ad_iterator_get_data(&context); 7374 // Prefer Complete Local Name over Shortened Local Name 7375 switch (data_type){ 7376 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7377 if (name) continue; 7378 /* fall through */ 7379 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7380 name = data; 7381 name_len = data_size; 7382 break; 7383 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7384 if (data_size != 8) break; 7385 event[16] = 1; 7386 memcpy(&event[17], data, 8); 7387 break; 7388 default: 7389 break; 7390 } 7391 } 7392 if (name){ 7393 event[25] = 1; 7394 // truncate name if needed 7395 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7396 event[26] = len; 7397 (void)memcpy(&event[27], name, len); 7398 event_size += len; 7399 } 7400 break; 7401 default: 7402 return; 7403 } 7404 event[1] = event_size - 2; 7405 hci_emit_event(event, event_size, 1); 7406 } 7407 } 7408 #endif 7409 7410 void hci_emit_state(void){ 7411 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7412 uint8_t event[3]; 7413 event[0] = BTSTACK_EVENT_STATE; 7414 event[1] = sizeof(event) - 2u; 7415 event[2] = hci_stack->state; 7416 hci_emit_event(event, sizeof(event), 1); 7417 } 7418 7419 #ifdef ENABLE_CLASSIC 7420 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7421 uint8_t event[13]; 7422 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7423 event[1] = sizeof(event) - 2; 7424 event[2] = status; 7425 little_endian_store_16(event, 3, con_handle); 7426 reverse_bd_addr(address, &event[5]); 7427 event[11] = 1; // ACL connection 7428 event[12] = 0; // encryption disabled 7429 hci_emit_event(event, sizeof(event), 1); 7430 } 7431 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7432 if (disable_l2cap_timeouts) return; 7433 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7434 uint8_t event[4]; 7435 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7436 event[1] = sizeof(event) - 2; 7437 little_endian_store_16(event, 2, conn->con_handle); 7438 hci_emit_event(event, sizeof(event), 1); 7439 } 7440 #endif 7441 7442 #ifdef ENABLE_BLE 7443 #ifdef ENABLE_LE_CENTRAL 7444 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){ 7445 uint8_t event[21]; 7446 event[0] = HCI_EVENT_LE_META; 7447 event[1] = sizeof(event) - 2u; 7448 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7449 event[3] = status; 7450 little_endian_store_16(event, 4, con_handle); 7451 event[6] = 0; // TODO: role 7452 event[7] = address_type; 7453 reverse_bd_addr(address, &event[8]); 7454 little_endian_store_16(event, 14, 0); // interval 7455 little_endian_store_16(event, 16, 0); // latency 7456 little_endian_store_16(event, 18, 0); // supervision timeout 7457 event[20] = 0; // master clock accuracy 7458 hci_emit_event(event, sizeof(event), 1); 7459 } 7460 #endif 7461 #endif 7462 7463 static void hci_emit_transport_packet_sent(void){ 7464 // notify upper stack that it might be possible to send again 7465 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7466 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7467 } 7468 7469 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7470 uint8_t event[6]; 7471 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7472 event[1] = sizeof(event) - 2u; 7473 event[2] = 0; // status = OK 7474 little_endian_store_16(event, 3, con_handle); 7475 event[5] = reason; 7476 hci_emit_event(event, sizeof(event), 1); 7477 } 7478 7479 static void hci_emit_nr_connections_changed(void){ 7480 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7481 uint8_t event[3]; 7482 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7483 event[1] = sizeof(event) - 2u; 7484 event[2] = nr_hci_connections(); 7485 hci_emit_event(event, sizeof(event), 1); 7486 } 7487 7488 static void hci_emit_hci_open_failed(void){ 7489 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7490 uint8_t event[2]; 7491 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7492 event[1] = sizeof(event) - 2u; 7493 hci_emit_event(event, sizeof(event), 1); 7494 } 7495 7496 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7497 log_info("hci_emit_dedicated_bonding_result %u ", status); 7498 uint8_t event[9]; 7499 int pos = 0; 7500 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7501 event[pos++] = sizeof(event) - 2u; 7502 event[pos++] = status; 7503 reverse_bd_addr(address, &event[pos]); 7504 hci_emit_event(event, sizeof(event), 1); 7505 } 7506 7507 7508 #ifdef ENABLE_CLASSIC 7509 7510 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7511 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7512 uint8_t event[5]; 7513 int pos = 0; 7514 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7515 event[pos++] = sizeof(event) - 2; 7516 little_endian_store_16(event, 2, con_handle); 7517 pos += 2; 7518 event[pos++] = level; 7519 hci_emit_event(event, sizeof(event), 1); 7520 } 7521 7522 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7523 if (!connection) return LEVEL_0; 7524 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7525 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7526 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7527 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7528 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7529 // LEVEL 4 always requires 128 bit encrytion key size 7530 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7531 security_level = LEVEL_3; 7532 } 7533 return security_level; 7534 } 7535 7536 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7537 uint8_t event[4]; 7538 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7539 event[1] = sizeof(event) - 2; 7540 event[2] = discoverable; 7541 event[3] = connectable; 7542 hci_emit_event(event, sizeof(event), 1); 7543 } 7544 7545 // query if remote side supports eSCO 7546 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7547 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7548 if (!connection) return false; 7549 return (connection->remote_supported_features[0] & 1) != 0; 7550 } 7551 7552 static bool hci_ssp_supported(hci_connection_t * connection){ 7553 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7554 return (connection->bonding_flags & mask) == mask; 7555 } 7556 7557 // query if remote side supports SSP 7558 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7559 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7560 if (!connection) return false; 7561 return hci_ssp_supported(connection) ? 1 : 0; 7562 } 7563 7564 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7565 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7566 } 7567 7568 /** 7569 * Check if remote supported features query has completed 7570 */ 7571 bool hci_remote_features_available(hci_con_handle_t handle){ 7572 hci_connection_t * connection = hci_connection_for_handle(handle); 7573 if (!connection) return false; 7574 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7575 } 7576 7577 /** 7578 * Trigger remote supported features query 7579 */ 7580 7581 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7582 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7583 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7584 } 7585 } 7586 7587 void hci_remote_features_query(hci_con_handle_t con_handle){ 7588 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7589 if (!connection) return; 7590 hci_trigger_remote_features_for_connection(connection); 7591 hci_run(); 7592 } 7593 7594 // GAP API 7595 /** 7596 * @bbrief enable/disable bonding. default is enabled 7597 * @praram enabled 7598 */ 7599 void gap_set_bondable_mode(int enable){ 7600 hci_stack->bondable = enable ? 1 : 0; 7601 } 7602 /** 7603 * @brief Get bondable mode. 7604 * @return 1 if bondable 7605 */ 7606 int gap_get_bondable_mode(void){ 7607 return hci_stack->bondable; 7608 } 7609 7610 /** 7611 * @brief map link keys to security levels 7612 */ 7613 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7614 switch (link_key_type){ 7615 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7616 return LEVEL_4; 7617 case COMBINATION_KEY: 7618 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7619 return LEVEL_3; 7620 default: 7621 return LEVEL_2; 7622 } 7623 } 7624 7625 /** 7626 * @brief map link keys to secure connection yes/no 7627 */ 7628 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7629 switch (link_key_type){ 7630 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7631 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7632 return true; 7633 default: 7634 return false; 7635 } 7636 } 7637 7638 /** 7639 * @brief map link keys to authenticated 7640 */ 7641 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7642 switch (link_key_type){ 7643 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7644 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7645 return true; 7646 default: 7647 return false; 7648 } 7649 } 7650 7651 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7652 log_info("gap_mitm_protection_required_for_security_level %u", level); 7653 return level > LEVEL_2; 7654 } 7655 7656 /** 7657 * @brief get current security level 7658 */ 7659 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7660 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7661 if (!connection) return LEVEL_0; 7662 return gap_security_level_for_connection(connection); 7663 } 7664 7665 /** 7666 * @brief request connection to device to 7667 * @result GAP_AUTHENTICATION_RESULT 7668 */ 7669 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7670 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7671 if (!connection){ 7672 hci_emit_security_level(con_handle, LEVEL_0); 7673 return; 7674 } 7675 7676 btstack_assert(hci_is_le_connection(connection) == false); 7677 7678 // 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) 7679 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7680 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7681 requested_level = LEVEL_4; 7682 } 7683 7684 gap_security_level_t current_level = gap_security_level(con_handle); 7685 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7686 requested_level, connection->requested_security_level, current_level); 7687 7688 // authentication active if authentication request was sent or planned level > 0 7689 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7690 if (authentication_active){ 7691 // authentication already active 7692 if (connection->requested_security_level < requested_level){ 7693 // increase requested level as new level is higher 7694 // TODO: handle re-authentication when done 7695 connection->requested_security_level = requested_level; 7696 } 7697 } else { 7698 // no request active, notify if security sufficient 7699 if (requested_level <= current_level){ 7700 hci_emit_security_level(con_handle, current_level); 7701 return; 7702 } 7703 7704 // store request 7705 connection->requested_security_level = requested_level; 7706 7707 // start to authenticate connection 7708 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7709 7710 // request remote features if not already active, also trigger hci_run 7711 hci_remote_features_query(con_handle); 7712 } 7713 } 7714 7715 /** 7716 * @brief start dedicated bonding with device. disconnect after bonding 7717 * @param device 7718 * @param request MITM protection 7719 * @result GAP_DEDICATED_BONDING_COMPLETE 7720 */ 7721 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7722 7723 // create connection state machine 7724 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7725 7726 if (!connection){ 7727 return BTSTACK_MEMORY_ALLOC_FAILED; 7728 } 7729 7730 // delete linkn key 7731 gap_drop_link_key_for_bd_addr(device); 7732 7733 // configure LEVEL_2/3, dedicated bonding 7734 connection->state = SEND_CREATE_CONNECTION; 7735 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7736 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7737 connection->bonding_flags = BONDING_DEDICATED; 7738 7739 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7740 7741 // handle: connnection failure (connection complete != ok) 7742 // handle: authentication failure 7743 // handle: disconnect on done 7744 7745 hci_run(); 7746 7747 return 0; 7748 } 7749 7750 void gap_set_local_name(const char * local_name){ 7751 hci_stack->local_name = local_name; 7752 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7753 // also update EIR if not set by user 7754 if (hci_stack->eir_data == NULL){ 7755 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7756 } 7757 hci_run(); 7758 } 7759 #endif 7760 7761 7762 #ifdef ENABLE_BLE 7763 7764 #ifdef ENABLE_LE_CENTRAL 7765 void gap_start_scan(void){ 7766 hci_stack->le_scanning_enabled = true; 7767 hci_run(); 7768 } 7769 7770 void gap_stop_scan(void){ 7771 hci_stack->le_scanning_enabled = false; 7772 hci_run(); 7773 } 7774 7775 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7776 hci_stack->le_scan_type = scan_type; 7777 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7778 hci_stack->le_scan_interval = scan_interval; 7779 hci_stack->le_scan_window = scan_window; 7780 hci_stack->le_scanning_param_update = true; 7781 hci_run(); 7782 } 7783 7784 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7785 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7786 } 7787 7788 void gap_set_scan_duplicate_filter(bool enabled){ 7789 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 7790 } 7791 7792 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7793 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7794 if (!conn){ 7795 // disallow if le connection is already outgoing 7796 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7797 log_error("le connection already active"); 7798 return ERROR_CODE_COMMAND_DISALLOWED; 7799 } 7800 7801 log_info("gap_connect: no connection exists yet, creating context"); 7802 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7803 if (!conn){ 7804 // notify client that alloc failed 7805 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7806 log_info("gap_connect: failed to alloc hci_connection_t"); 7807 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7808 } 7809 7810 // set le connecting state 7811 if (hci_is_le_connection_type(addr_type)){ 7812 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7813 } 7814 7815 conn->state = SEND_CREATE_CONNECTION; 7816 log_info("gap_connect: send create connection next"); 7817 hci_run(); 7818 return ERROR_CODE_SUCCESS; 7819 } 7820 7821 if (!hci_is_le_connection(conn) || 7822 (conn->state == SEND_CREATE_CONNECTION) || 7823 (conn->state == SENT_CREATE_CONNECTION)) { 7824 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7825 log_error("gap_connect: classic connection or connect is already being created"); 7826 return GATT_CLIENT_IN_WRONG_STATE; 7827 } 7828 7829 // check if connection was just disconnected 7830 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7831 log_info("gap_connect: send create connection (again)"); 7832 conn->state = SEND_CREATE_CONNECTION; 7833 hci_run(); 7834 return ERROR_CODE_SUCCESS; 7835 } 7836 7837 log_info("gap_connect: context exists with state %u", conn->state); 7838 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7839 hci_run(); 7840 return ERROR_CODE_SUCCESS; 7841 } 7842 7843 // @assumption: only a single outgoing LE Connection exists 7844 static hci_connection_t * gap_get_outgoing_connection(void){ 7845 btstack_linked_item_t *it; 7846 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7847 hci_connection_t * conn = (hci_connection_t *) it; 7848 if (!hci_is_le_connection(conn)) continue; 7849 switch (conn->state){ 7850 case SEND_CREATE_CONNECTION: 7851 case SENT_CREATE_CONNECTION: 7852 return conn; 7853 default: 7854 break; 7855 }; 7856 } 7857 return NULL; 7858 } 7859 7860 uint8_t gap_connect_cancel(void){ 7861 hci_connection_t * conn; 7862 switch (hci_stack->le_connecting_request){ 7863 case LE_CONNECTING_IDLE: 7864 break; 7865 case LE_CONNECTING_WHITELIST: 7866 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7867 hci_run(); 7868 break; 7869 case LE_CONNECTING_DIRECT: 7870 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7871 conn = gap_get_outgoing_connection(); 7872 if (conn == NULL){ 7873 hci_run(); 7874 } else { 7875 switch (conn->state){ 7876 case SEND_CREATE_CONNECTION: 7877 // skip sending create connection and emit event instead 7878 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7879 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7880 btstack_memory_hci_connection_free( conn ); 7881 break; 7882 case SENT_CREATE_CONNECTION: 7883 // let hci_run_general_gap_le cancel outgoing connection 7884 hci_run(); 7885 break; 7886 default: 7887 break; 7888 } 7889 } 7890 break; 7891 default: 7892 btstack_unreachable(); 7893 break; 7894 } 7895 return ERROR_CODE_SUCCESS; 7896 } 7897 7898 /** 7899 * @brief Set connection parameters for outgoing connections 7900 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7901 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7902 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7903 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7904 * @param conn_latency, default: 4 7905 * @param supervision_timeout (unit: 10ms), default: 720 ms 7906 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7907 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7908 */ 7909 7910 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7911 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7912 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7913 hci_stack->le_connection_scan_interval = conn_scan_interval; 7914 hci_stack->le_connection_scan_window = conn_scan_window; 7915 hci_stack->le_connection_interval_min = conn_interval_min; 7916 hci_stack->le_connection_interval_max = conn_interval_max; 7917 hci_stack->le_connection_latency = conn_latency; 7918 hci_stack->le_supervision_timeout = supervision_timeout; 7919 hci_stack->le_minimum_ce_length = min_ce_length; 7920 hci_stack->le_maximum_ce_length = max_ce_length; 7921 } 7922 #endif 7923 7924 /** 7925 * @brief Updates the connection parameters for a given LE connection 7926 * @param handle 7927 * @param conn_interval_min (unit: 1.25ms) 7928 * @param conn_interval_max (unit: 1.25ms) 7929 * @param conn_latency 7930 * @param supervision_timeout (unit: 10ms) 7931 * @return 0 if ok 7932 */ 7933 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7934 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7935 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7936 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7937 connection->le_conn_interval_min = conn_interval_min; 7938 connection->le_conn_interval_max = conn_interval_max; 7939 connection->le_conn_latency = conn_latency; 7940 connection->le_supervision_timeout = supervision_timeout; 7941 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7942 hci_run(); 7943 return 0; 7944 } 7945 7946 /** 7947 * @brief Request an update of the connection parameter for a given LE connection 7948 * @param handle 7949 * @param conn_interval_min (unit: 1.25ms) 7950 * @param conn_interval_max (unit: 1.25ms) 7951 * @param conn_latency 7952 * @param supervision_timeout (unit: 10ms) 7953 * @return 0 if ok 7954 */ 7955 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7956 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7957 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7958 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7959 connection->le_conn_interval_min = conn_interval_min; 7960 connection->le_conn_interval_max = conn_interval_max; 7961 connection->le_conn_latency = conn_latency; 7962 connection->le_supervision_timeout = supervision_timeout; 7963 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7964 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7965 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7966 return 0; 7967 } 7968 7969 #ifdef ENABLE_LE_PERIPHERAL 7970 7971 /** 7972 * @brief Set Advertisement Data 7973 * @param advertising_data_length 7974 * @param advertising_data (max 31 octets) 7975 * @note data is not copied, pointer has to stay valid 7976 */ 7977 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7978 hci_stack->le_advertisements_data_len = advertising_data_length; 7979 hci_stack->le_advertisements_data = advertising_data; 7980 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7981 hci_run(); 7982 } 7983 7984 /** 7985 * @brief Set Scan Response Data 7986 * @param advertising_data_length 7987 * @param advertising_data (max 31 octets) 7988 * @note data is not copied, pointer has to stay valid 7989 */ 7990 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7991 hci_stack->le_scan_response_data_len = scan_response_data_length; 7992 hci_stack->le_scan_response_data = scan_response_data; 7993 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7994 hci_run(); 7995 } 7996 7997 /** 7998 * @brief Set Advertisement Parameters 7999 * @param adv_int_min 8000 * @param adv_int_max 8001 * @param adv_type 8002 * @param direct_address_type 8003 * @param direct_address 8004 * @param channel_map 8005 * @param filter_policy 8006 * 8007 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8008 */ 8009 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8010 uint8_t direct_address_typ, bd_addr_t direct_address, 8011 uint8_t channel_map, uint8_t filter_policy) { 8012 8013 hci_stack->le_advertisements_interval_min = adv_int_min; 8014 hci_stack->le_advertisements_interval_max = adv_int_max; 8015 hci_stack->le_advertisements_type = adv_type; 8016 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8017 hci_stack->le_advertisements_channel_map = channel_map; 8018 hci_stack->le_advertisements_filter_policy = filter_policy; 8019 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8020 6); 8021 8022 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8023 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8024 hci_run(); 8025 } 8026 8027 /** 8028 * @brief Enable/Disable Advertisements 8029 * @param enabled 8030 */ 8031 void gap_advertisements_enable(int enabled){ 8032 if (enabled == 0){ 8033 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8034 } else { 8035 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8036 } 8037 hci_update_advertisements_enabled_for_current_roles(); 8038 hci_run(); 8039 } 8040 8041 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8042 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8043 btstack_linked_list_iterator_t it; 8044 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8045 while (btstack_linked_list_iterator_has_next(&it)){ 8046 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8047 if ( item->advertising_handle == advertising_handle ) { 8048 return item; 8049 } 8050 } 8051 return NULL; 8052 } 8053 8054 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8055 // find free advertisement handle 8056 uint8_t advertisement_handle; 8057 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8058 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8059 } 8060 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8061 // clear 8062 memset(storage, 0, sizeof(le_advertising_set_t)); 8063 // copy params 8064 storage->advertising_handle = advertisement_handle; 8065 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8066 // add to list 8067 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8068 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8069 *out_advertising_handle = advertisement_handle; 8070 // set tasks and start 8071 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8072 hci_run(); 8073 return ERROR_CODE_SUCCESS; 8074 } 8075 8076 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8077 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8078 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8079 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8080 // set tasks and start 8081 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8082 hci_run(); 8083 return ERROR_CODE_SUCCESS; 8084 } 8085 8086 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8087 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8088 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8089 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8090 return ERROR_CODE_SUCCESS; 8091 } 8092 8093 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8094 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8095 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8096 memcpy(advertising_set->random_address, random_address, 6); 8097 // set tasks and start 8098 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8099 hci_run(); 8100 return ERROR_CODE_SUCCESS; 8101 } 8102 8103 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8104 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8105 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8106 advertising_set->adv_data = advertising_data; 8107 advertising_set->adv_data_len = advertising_data_length; 8108 // set tasks and start 8109 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8110 hci_run(); 8111 return ERROR_CODE_SUCCESS; 8112 } 8113 8114 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){ 8115 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8116 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8117 advertising_set->scan_data = scan_response_data; 8118 advertising_set->scan_data_len = scan_response_data_length; 8119 // set tasks and start 8120 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8121 hci_run(); 8122 return ERROR_CODE_SUCCESS; 8123 } 8124 8125 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8126 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8127 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8128 advertising_set->enable_timeout = timeout; 8129 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8130 // set tasks and start 8131 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8132 hci_run(); 8133 return ERROR_CODE_SUCCESS; 8134 } 8135 8136 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8137 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8138 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8139 // set tasks and start 8140 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8141 hci_run(); 8142 return ERROR_CODE_SUCCESS; 8143 } 8144 8145 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8146 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8147 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8148 // set tasks and start 8149 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8150 hci_run(); 8151 return ERROR_CODE_SUCCESS; 8152 } 8153 8154 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8155 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8156 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8157 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8158 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8159 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8160 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8161 // set tasks and start 8162 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8163 hci_run(); 8164 return ERROR_CODE_SUCCESS; 8165 } 8166 8167 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8168 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8169 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8170 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8171 return ERROR_CODE_SUCCESS; 8172 } 8173 8174 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8175 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8176 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8177 advertising_set->periodic_data = periodic_data; 8178 advertising_set->periodic_data_len = periodic_data_length; 8179 // set tasks and start 8180 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8181 hci_run(); 8182 return ERROR_CODE_SUCCESS; 8183 } 8184 8185 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8186 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8187 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8188 // set tasks and start 8189 advertising_set->periodic_include_adi = include_adi; 8190 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8191 hci_run(); 8192 return ERROR_CODE_SUCCESS; 8193 } 8194 8195 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8196 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8197 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8198 // set tasks and start 8199 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8200 hci_run(); 8201 return ERROR_CODE_SUCCESS; 8202 } 8203 8204 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8205 hci_stack->le_past_mode = mode; 8206 hci_stack->le_past_skip = skip; 8207 hci_stack->le_past_sync_timeout = sync_timeout; 8208 hci_stack->le_past_cte_type = cte_type; 8209 hci_stack->le_past_set_default_params = true; 8210 hci_run(); 8211 return ERROR_CODE_SUCCESS; 8212 } 8213 8214 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8215 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8216 if (hci_connection == NULL){ 8217 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8218 } 8219 hci_connection->le_past_sync_handle = sync_handle; 8220 hci_connection->le_past_service_data = service_data; 8221 hci_run(); 8222 return ERROR_CODE_SUCCESS; 8223 } 8224 8225 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8226 8227 #endif 8228 8229 #endif 8230 8231 void hci_le_set_own_address_type(uint8_t own_address_type){ 8232 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8233 if (own_address_type == hci_stack->le_own_addr_type) return; 8234 hci_stack->le_own_addr_type = own_address_type; 8235 8236 #ifdef ENABLE_LE_PERIPHERAL 8237 // update advertisement parameters, too 8238 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8239 hci_run(); 8240 #endif 8241 #ifdef ENABLE_LE_CENTRAL 8242 // note: we don't update scan parameters or modify ongoing connection attempts 8243 #endif 8244 } 8245 8246 void hci_le_random_address_set(const bd_addr_t random_address){ 8247 memcpy(hci_stack->le_random_address, random_address, 6); 8248 hci_stack->le_random_address_set = true; 8249 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8250 hci_run(); 8251 } 8252 8253 #endif 8254 8255 uint8_t gap_disconnect(hci_con_handle_t handle){ 8256 hci_connection_t * conn = hci_connection_for_handle(handle); 8257 if (!conn){ 8258 hci_emit_disconnection_complete(handle, 0); 8259 return 0; 8260 } 8261 // ignore if already disconnected 8262 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8263 return 0; 8264 } 8265 conn->state = SEND_DISCONNECT; 8266 hci_run(); 8267 return 0; 8268 } 8269 8270 int gap_read_rssi(hci_con_handle_t con_handle){ 8271 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8272 if (hci_connection == NULL) return 0; 8273 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8274 hci_run(); 8275 return 1; 8276 } 8277 8278 /** 8279 * @brief Get connection type 8280 * @param con_handle 8281 * @result connection_type 8282 */ 8283 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8284 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8285 if (!conn) return GAP_CONNECTION_INVALID; 8286 switch (conn->address_type){ 8287 case BD_ADDR_TYPE_LE_PUBLIC: 8288 case BD_ADDR_TYPE_LE_RANDOM: 8289 return GAP_CONNECTION_LE; 8290 case BD_ADDR_TYPE_SCO: 8291 return GAP_CONNECTION_SCO; 8292 case BD_ADDR_TYPE_ACL: 8293 return GAP_CONNECTION_ACL; 8294 default: 8295 return GAP_CONNECTION_INVALID; 8296 } 8297 } 8298 8299 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8300 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8301 if (!conn) return HCI_ROLE_INVALID; 8302 return (hci_role_t) conn->role; 8303 } 8304 8305 8306 #ifdef ENABLE_CLASSIC 8307 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8308 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8309 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8310 conn->request_role = role; 8311 hci_run(); 8312 return ERROR_CODE_SUCCESS; 8313 } 8314 #endif 8315 8316 #ifdef ENABLE_BLE 8317 8318 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint8_t phy_options){ 8319 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8320 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8321 8322 conn->le_phy_update_all_phys = all_phys; 8323 conn->le_phy_update_tx_phys = tx_phys; 8324 conn->le_phy_update_rx_phys = rx_phys; 8325 conn->le_phy_update_phy_options = phy_options; 8326 8327 hci_run(); 8328 8329 return 0; 8330 } 8331 8332 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8333 // check if already in list 8334 btstack_linked_list_iterator_t it; 8335 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8336 while (btstack_linked_list_iterator_has_next(&it)) { 8337 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8338 if (entry->address_type != address_type) { 8339 continue; 8340 } 8341 if (memcmp(entry->address, address, 6) != 0) { 8342 continue; 8343 } 8344 // disallow if already scheduled to add 8345 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8346 return ERROR_CODE_COMMAND_DISALLOWED; 8347 } 8348 // still on controller, but scheduled to remove -> re-add 8349 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8350 return ERROR_CODE_SUCCESS; 8351 } 8352 // alloc and add to list 8353 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8354 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8355 entry->address_type = address_type; 8356 (void)memcpy(entry->address, address, 6); 8357 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8358 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8359 return ERROR_CODE_SUCCESS; 8360 } 8361 8362 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8363 btstack_linked_list_iterator_t it; 8364 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8365 while (btstack_linked_list_iterator_has_next(&it)){ 8366 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8367 if (entry->address_type != address_type) { 8368 continue; 8369 } 8370 if (memcmp(entry->address, address, 6) != 0) { 8371 continue; 8372 } 8373 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8374 // remove from controller if already present 8375 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8376 } else { 8377 // directly remove entry from whitelist 8378 btstack_linked_list_iterator_remove(&it); 8379 btstack_memory_whitelist_entry_free(entry); 8380 } 8381 return ERROR_CODE_SUCCESS; 8382 } 8383 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8384 } 8385 8386 static void hci_whitelist_clear(void){ 8387 btstack_linked_list_iterator_t it; 8388 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8389 while (btstack_linked_list_iterator_has_next(&it)){ 8390 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8391 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8392 // remove from controller if already present 8393 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8394 continue; 8395 } 8396 // directly remove entry from whitelist 8397 btstack_linked_list_iterator_remove(&it); 8398 btstack_memory_whitelist_entry_free(entry); 8399 } 8400 } 8401 8402 // free all entries unconditionally 8403 static void hci_whitelist_free(void){ 8404 btstack_linked_list_iterator_t lit; 8405 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 8406 while (btstack_linked_list_iterator_has_next(&lit)){ 8407 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 8408 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 8409 btstack_memory_whitelist_entry_free(entry); 8410 } 8411 } 8412 8413 /** 8414 * @brief Clear Whitelist 8415 * @return 0 if ok 8416 */ 8417 uint8_t gap_whitelist_clear(void){ 8418 hci_whitelist_clear(); 8419 hci_run(); 8420 return ERROR_CODE_SUCCESS; 8421 } 8422 8423 /** 8424 * @brief Add Device to Whitelist 8425 * @param address_typ 8426 * @param address 8427 * @return 0 if ok 8428 */ 8429 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8430 uint8_t status = hci_whitelist_add(address_type, address); 8431 if (status){ 8432 return status; 8433 } 8434 hci_run(); 8435 return ERROR_CODE_SUCCESS; 8436 } 8437 8438 /** 8439 * @brief Remove Device from Whitelist 8440 * @param address_typ 8441 * @param address 8442 * @return 0 if ok 8443 */ 8444 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8445 uint8_t status = hci_whitelist_remove(address_type, address); 8446 if (status){ 8447 return status; 8448 } 8449 hci_run(); 8450 return ERROR_CODE_SUCCESS; 8451 } 8452 8453 #ifdef ENABLE_LE_CENTRAL 8454 /** 8455 * @brief Connect with Whitelist 8456 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8457 * @return - if ok 8458 */ 8459 uint8_t gap_connect_with_whitelist(void){ 8460 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8461 return ERROR_CODE_COMMAND_DISALLOWED; 8462 } 8463 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8464 hci_run(); 8465 return ERROR_CODE_SUCCESS; 8466 } 8467 8468 /** 8469 * @brief Auto Connection Establishment - Start Connecting to device 8470 * @param address_typ 8471 * @param address 8472 * @return 0 if ok 8473 */ 8474 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8475 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8476 return ERROR_CODE_COMMAND_DISALLOWED; 8477 } 8478 8479 uint8_t status = hci_whitelist_add(address_type, address); 8480 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8481 return status; 8482 } 8483 8484 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8485 8486 hci_run(); 8487 return ERROR_CODE_SUCCESS; 8488 } 8489 8490 /** 8491 * @brief Auto Connection Establishment - Stop Connecting to device 8492 * @param address_typ 8493 * @param address 8494 * @return 0 if ok 8495 */ 8496 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8497 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8498 return ERROR_CODE_COMMAND_DISALLOWED; 8499 } 8500 8501 hci_whitelist_remove(address_type, address); 8502 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8503 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8504 } 8505 hci_run(); 8506 return 0; 8507 } 8508 8509 /** 8510 * @brief Auto Connection Establishment - Stop everything 8511 * @note Convenience function to stop all active auto connection attempts 8512 */ 8513 uint8_t gap_auto_connection_stop_all(void){ 8514 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8515 return ERROR_CODE_COMMAND_DISALLOWED; 8516 } 8517 hci_whitelist_clear(); 8518 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8519 hci_run(); 8520 return ERROR_CODE_SUCCESS; 8521 } 8522 8523 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8524 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8525 if (!conn) return 0; 8526 return conn->le_connection_interval; 8527 } 8528 #endif 8529 #endif 8530 8531 #ifdef ENABLE_CLASSIC 8532 /** 8533 * @brief Set Extended Inquiry Response data 8534 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8535 * @note has to be done before stack starts up 8536 */ 8537 void gap_set_extended_inquiry_response(const uint8_t * data){ 8538 hci_stack->eir_data = data; 8539 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8540 hci_run(); 8541 } 8542 8543 /** 8544 * @brief Start GAP Classic Inquiry 8545 * @param duration in 1.28s units 8546 * @return 0 if ok 8547 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8548 */ 8549 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8550 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8551 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8552 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8553 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8554 } 8555 hci_stack->inquiry_state = duration_in_1280ms_units; 8556 hci_stack->inquiry_max_period_length = 0; 8557 hci_stack->inquiry_min_period_length = 0; 8558 hci_run(); 8559 return 0; 8560 } 8561 8562 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8563 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8564 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8565 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8566 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8567 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8568 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8569 8570 hci_stack->inquiry_state = duration; 8571 hci_stack->inquiry_max_period_length = max_period_length; 8572 hci_stack->inquiry_min_period_length = min_period_length; 8573 hci_run(); 8574 return 0; 8575 } 8576 8577 /** 8578 * @brief Stop GAP Classic Inquiry 8579 * @return 0 if ok 8580 */ 8581 int gap_inquiry_stop(void){ 8582 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8583 // emit inquiry complete event, before it even started 8584 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8585 hci_emit_event(event, sizeof(event), 1); 8586 return 0; 8587 } 8588 switch (hci_stack->inquiry_state){ 8589 case GAP_INQUIRY_STATE_ACTIVE: 8590 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8591 hci_run(); 8592 return ERROR_CODE_SUCCESS; 8593 case GAP_INQUIRY_STATE_PERIODIC: 8594 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8595 hci_run(); 8596 return ERROR_CODE_SUCCESS; 8597 default: 8598 return ERROR_CODE_COMMAND_DISALLOWED; 8599 } 8600 } 8601 8602 void gap_inquiry_set_lap(uint32_t lap){ 8603 hci_stack->inquiry_lap = lap; 8604 } 8605 8606 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8607 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8608 hci_stack->inquiry_scan_window = inquiry_scan_window; 8609 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8610 hci_run(); 8611 } 8612 8613 8614 /** 8615 * @brief Remote Name Request 8616 * @param addr 8617 * @param page_scan_repetition_mode 8618 * @param clock_offset only used when bit 15 is set 8619 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8620 */ 8621 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8622 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8623 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8624 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8625 hci_stack->remote_name_clock_offset = clock_offset; 8626 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8627 hci_run(); 8628 return 0; 8629 } 8630 8631 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8632 hci_stack->gap_pairing_state = state; 8633 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8634 hci_run(); 8635 return 0; 8636 } 8637 8638 /** 8639 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8640 * @param addr 8641 * @param pin_data 8642 * @param pin_len 8643 * @return 0 if ok 8644 */ 8645 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8646 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8647 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8648 hci_stack->gap_pairing_pin_len = pin_len; 8649 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8650 } 8651 8652 /** 8653 * @brief Legacy Pairing Pin Code Response 8654 * @param addr 8655 * @param pin 8656 * @return 0 if ok 8657 */ 8658 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8659 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8660 } 8661 8662 /** 8663 * @brief Abort Legacy Pairing 8664 * @param addr 8665 * @param pin 8666 * @return 0 if ok 8667 */ 8668 int gap_pin_code_negative(bd_addr_t addr){ 8669 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8670 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8671 } 8672 8673 /** 8674 * @brief SSP Passkey Response 8675 * @param addr 8676 * @param passkey 8677 * @return 0 if ok 8678 */ 8679 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8680 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8681 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8682 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8683 } 8684 8685 /** 8686 * @brief Abort SSP Passkey Entry/Pairing 8687 * @param addr 8688 * @param pin 8689 * @return 0 if ok 8690 */ 8691 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8692 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8693 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8694 } 8695 8696 /** 8697 * @brief Accept SSP Numeric Comparison 8698 * @param addr 8699 * @param passkey 8700 * @return 0 if ok 8701 */ 8702 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8703 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8704 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8705 } 8706 8707 /** 8708 * @brief Abort SSP Numeric Comparison/Pairing 8709 * @param addr 8710 * @param pin 8711 * @return 0 if ok 8712 */ 8713 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8714 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8715 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8716 } 8717 8718 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8719 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8720 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8721 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8722 connectionSetAuthenticationFlags(conn, flag); 8723 hci_run(); 8724 return ERROR_CODE_SUCCESS; 8725 } 8726 #endif 8727 8728 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8729 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8730 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8731 } 8732 8733 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8734 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8735 } 8736 #endif 8737 8738 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8739 /** 8740 * @brief Report Remote OOB Data 8741 * @param bd_addr 8742 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8743 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8744 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8745 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8746 */ 8747 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){ 8748 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8749 if (connection == NULL) { 8750 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8751 } 8752 connection->classic_oob_c_192 = c_192; 8753 connection->classic_oob_r_192 = r_192; 8754 8755 // ignore P-256 if not supported by us 8756 if (hci_stack->secure_connections_active){ 8757 connection->classic_oob_c_256 = c_256; 8758 connection->classic_oob_r_256 = r_256; 8759 } 8760 8761 return ERROR_CODE_SUCCESS; 8762 } 8763 /** 8764 * @brief Generate new OOB data 8765 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8766 */ 8767 void gap_ssp_generate_oob_data(void){ 8768 hci_stack->classic_read_local_oob_data = true; 8769 hci_run(); 8770 } 8771 8772 #endif 8773 8774 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8775 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8776 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8777 if (connection == NULL) { 8778 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8779 } 8780 8781 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8782 connection->link_key_type = type; 8783 8784 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8785 } 8786 8787 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8788 /** 8789 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8790 * @param inquiry_mode see bluetooth_defines.h 8791 */ 8792 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8793 hci_stack->inquiry_mode = inquiry_mode; 8794 } 8795 8796 /** 8797 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8798 */ 8799 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8800 hci_stack->sco_voice_setting = voice_setting; 8801 } 8802 8803 /** 8804 * @brief Get SCO Voice Setting 8805 * @return current voice setting 8806 */ 8807 uint16_t hci_get_sco_voice_setting(void){ 8808 return hci_stack->sco_voice_setting; 8809 } 8810 8811 static int hci_have_usb_transport(void){ 8812 if (!hci_stack->hci_transport) return 0; 8813 const char * transport_name = hci_stack->hci_transport->name; 8814 if (!transport_name) return 0; 8815 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8816 } 8817 8818 /** @brief Get SCO packet length for current SCO Voice setting 8819 * @note Using SCO packets of the exact length is required for USB transfer 8820 * @return Length of SCO packets in bytes (not audio frames) 8821 */ 8822 uint16_t hci_get_sco_packet_length(void){ 8823 uint16_t sco_packet_length = 0; 8824 8825 #ifdef ENABLE_SCO_OVER_HCI 8826 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8827 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8828 8829 if (hci_have_usb_transport()){ 8830 // see Core Spec for H2 USB Transfer. 8831 // 3 byte SCO header + 24 bytes per connection 8832 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8833 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8834 } else { 8835 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8836 sco_packet_length = 3 + 60 * multiplier; 8837 // assert that it still fits inside an SCO buffer 8838 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8839 sco_packet_length = 3 + 60; 8840 } 8841 } 8842 #endif 8843 8844 #ifdef HAVE_SCO_TRANSPORT 8845 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8846 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8847 sco_packet_length = 3 + 60 * multiplier; 8848 #endif 8849 return sco_packet_length; 8850 } 8851 8852 /** 8853 * @brief Sets the master/slave policy 8854 * @param policy (0: attempt to become master, 1: let connecting device decide) 8855 */ 8856 void hci_set_master_slave_policy(uint8_t policy){ 8857 hci_stack->master_slave_policy = policy; 8858 } 8859 8860 #endif 8861 8862 HCI_STATE hci_get_state(void){ 8863 return hci_stack->state; 8864 } 8865 8866 #ifdef ENABLE_CLASSIC 8867 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8868 hci_stack->gap_classic_accept_callback = accept_callback; 8869 } 8870 #endif 8871 8872 /** 8873 * @brief Set callback for Bluetooth Hardware Error 8874 */ 8875 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8876 hci_stack->hardware_error_callback = fn; 8877 } 8878 8879 void hci_disconnect_all(void){ 8880 btstack_linked_list_iterator_t it; 8881 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8882 while (btstack_linked_list_iterator_has_next(&it)){ 8883 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8884 if (con->state == SENT_DISCONNECT) continue; 8885 con->state = SEND_DISCONNECT; 8886 } 8887 hci_run(); 8888 } 8889 8890 uint16_t hci_get_manufacturer(void){ 8891 return hci_stack->manufacturer; 8892 } 8893 8894 #ifdef ENABLE_BLE 8895 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8896 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8897 if (!hci_con) return NULL; 8898 return &hci_con->sm_connection; 8899 } 8900 8901 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8902 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8903 #endif 8904 8905 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8906 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8907 if (hci_connection == NULL) return 0; 8908 if (hci_is_le_connection(hci_connection)){ 8909 #ifdef ENABLE_BLE 8910 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8911 if (sm_conn->sm_connection_encrypted) { 8912 return sm_conn->sm_actual_encryption_key_size; 8913 } 8914 #endif 8915 } else { 8916 #ifdef ENABLE_CLASSIC 8917 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8918 return hci_connection->encryption_key_size; 8919 } 8920 #endif 8921 } 8922 return 0; 8923 } 8924 8925 bool gap_authenticated(hci_con_handle_t con_handle){ 8926 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8927 if (hci_connection == NULL) return false; 8928 8929 switch (hci_connection->address_type){ 8930 #ifdef ENABLE_BLE 8931 case BD_ADDR_TYPE_LE_PUBLIC: 8932 case BD_ADDR_TYPE_LE_RANDOM: 8933 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8934 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8935 #endif 8936 #ifdef ENABLE_CLASSIC 8937 case BD_ADDR_TYPE_SCO: 8938 case BD_ADDR_TYPE_ACL: 8939 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8940 #endif 8941 default: 8942 return false; 8943 } 8944 } 8945 8946 bool gap_secure_connection(hci_con_handle_t con_handle){ 8947 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8948 if (hci_connection == NULL) return 0; 8949 8950 switch (hci_connection->address_type){ 8951 #ifdef ENABLE_BLE 8952 case BD_ADDR_TYPE_LE_PUBLIC: 8953 case BD_ADDR_TYPE_LE_RANDOM: 8954 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8955 return hci_connection->sm_connection.sm_connection_sc != 0; 8956 #endif 8957 #ifdef ENABLE_CLASSIC 8958 case BD_ADDR_TYPE_SCO: 8959 case BD_ADDR_TYPE_ACL: 8960 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8961 #endif 8962 default: 8963 return false; 8964 } 8965 } 8966 8967 bool gap_bonded(hci_con_handle_t con_handle){ 8968 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8969 if (hci_connection == NULL) return 0; 8970 8971 #ifdef ENABLE_CLASSIC 8972 link_key_t link_key; 8973 link_key_type_t link_key_type; 8974 #endif 8975 switch (hci_connection->address_type){ 8976 #ifdef ENABLE_BLE 8977 case BD_ADDR_TYPE_LE_PUBLIC: 8978 case BD_ADDR_TYPE_LE_RANDOM: 8979 return hci_connection->sm_connection.sm_le_db_index >= 0; 8980 #endif 8981 #ifdef ENABLE_CLASSIC 8982 case BD_ADDR_TYPE_SCO: 8983 case BD_ADDR_TYPE_ACL: 8984 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8985 #endif 8986 default: 8987 return false; 8988 } 8989 } 8990 8991 #ifdef ENABLE_BLE 8992 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8993 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8994 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8995 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8996 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8997 return sm_conn->sm_connection_authorization_state; 8998 } 8999 #endif 9000 9001 #ifdef ENABLE_CLASSIC 9002 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){ 9003 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9004 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9005 conn->sniff_min_interval = sniff_min_interval; 9006 conn->sniff_max_interval = sniff_max_interval; 9007 conn->sniff_attempt = sniff_attempt; 9008 conn->sniff_timeout = sniff_timeout; 9009 hci_run(); 9010 return 0; 9011 } 9012 9013 /** 9014 * @brief Exit Sniff mode 9015 * @param con_handle 9016 @ @return 0 if ok 9017 */ 9018 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9019 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9020 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9021 conn->sniff_min_interval = 0xffff; 9022 hci_run(); 9023 return 0; 9024 } 9025 9026 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){ 9027 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9028 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9029 conn->sniff_subrating_max_latency = max_latency; 9030 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9031 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9032 hci_run(); 9033 return ERROR_CODE_SUCCESS; 9034 } 9035 9036 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){ 9037 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9038 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9039 conn->qos_service_type = service_type; 9040 conn->qos_token_rate = token_rate; 9041 conn->qos_peak_bandwidth = peak_bandwidth; 9042 conn->qos_latency = latency; 9043 conn->qos_delay_variation = delay_variation; 9044 hci_run(); 9045 return ERROR_CODE_SUCCESS; 9046 } 9047 9048 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9049 hci_stack->new_page_scan_interval = page_scan_interval; 9050 hci_stack->new_page_scan_window = page_scan_window; 9051 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9052 hci_run(); 9053 } 9054 9055 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9056 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9057 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9058 hci_run(); 9059 } 9060 9061 void gap_set_page_timeout(uint16_t page_timeout){ 9062 hci_stack->page_timeout = page_timeout; 9063 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9064 hci_run(); 9065 } 9066 9067 #endif 9068 9069 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9070 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9071 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9072 if (le_device_db_index >= le_device_db_max_count()) return; 9073 uint8_t offset = le_device_db_index >> 3; 9074 uint8_t mask = 1 << (le_device_db_index & 7); 9075 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9076 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9077 // note: go back to remove entries, otherwise, a remove + add will skip the add 9078 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9079 } 9080 } 9081 9082 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9083 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9084 if (le_device_db_index >= le_device_db_max_count()) return; 9085 uint8_t offset = le_device_db_index >> 3; 9086 uint8_t mask = 1 << (le_device_db_index & 7); 9087 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9088 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9089 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9090 } 9091 } 9092 9093 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9094 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9095 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9096 } 9097 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9098 // restart le resolving list update 9099 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9100 } 9101 return ERROR_CODE_SUCCESS; 9102 } 9103 #endif 9104 9105 #ifdef ENABLE_BLE 9106 #ifdef ENABLE_LE_CENTRAL 9107 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9108 9109 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9110 // check if already in list 9111 btstack_linked_list_iterator_t it; 9112 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9113 while (btstack_linked_list_iterator_has_next(&it)) { 9114 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9115 if (entry->sid != advertising_sid) { 9116 continue; 9117 } 9118 if (entry->address_type != address_type) { 9119 continue; 9120 } 9121 if (memcmp(entry->address, address, 6) != 0) { 9122 continue; 9123 } 9124 // disallow if already scheduled to add 9125 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9126 return ERROR_CODE_COMMAND_DISALLOWED; 9127 } 9128 // still on controller, but scheduled to remove -> re-add 9129 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9130 return ERROR_CODE_SUCCESS; 9131 } 9132 // alloc and add to list 9133 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9134 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9135 entry->sid = advertising_sid; 9136 entry->address_type = address_type; 9137 (void)memcpy(entry->address, address, 6); 9138 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9139 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9140 return ERROR_CODE_SUCCESS; 9141 } 9142 9143 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9144 btstack_linked_list_iterator_t it; 9145 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9146 while (btstack_linked_list_iterator_has_next(&it)){ 9147 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9148 if (entry->sid != advertising_sid) { 9149 continue; 9150 } 9151 if (entry->address_type != address_type) { 9152 continue; 9153 } 9154 if (memcmp(entry->address, address, 6) != 0) { 9155 continue; 9156 } 9157 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9158 // remove from controller if already present 9159 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9160 } else { 9161 // directly remove entry from whitelist 9162 btstack_linked_list_iterator_remove(&it); 9163 btstack_memory_periodic_advertiser_list_entry_free(entry); 9164 } 9165 return ERROR_CODE_SUCCESS; 9166 } 9167 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9168 } 9169 9170 static void hci_periodic_advertiser_list_clear(void){ 9171 btstack_linked_list_iterator_t it; 9172 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9173 while (btstack_linked_list_iterator_has_next(&it)){ 9174 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9175 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9176 // remove from controller if already present 9177 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9178 continue; 9179 } 9180 // directly remove entry from whitelist 9181 btstack_linked_list_iterator_remove(&it); 9182 btstack_memory_periodic_advertiser_list_entry_free(entry); 9183 } 9184 } 9185 9186 // free all entries unconditionally 9187 static void hci_periodic_advertiser_list_free(void){ 9188 btstack_linked_list_iterator_t lit; 9189 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 9190 while (btstack_linked_list_iterator_has_next(&lit)){ 9191 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 9192 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 9193 btstack_memory_periodic_advertiser_list_entry_free(entry); 9194 } 9195 } 9196 9197 uint8_t gap_periodic_advertiser_list_clear(void){ 9198 hci_periodic_advertiser_list_clear(); 9199 hci_run(); 9200 return ERROR_CODE_SUCCESS; 9201 } 9202 9203 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9204 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9205 if (status){ 9206 return status; 9207 } 9208 hci_run(); 9209 return ERROR_CODE_SUCCESS; 9210 } 9211 9212 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9213 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9214 if (status){ 9215 return status; 9216 } 9217 hci_run(); 9218 return ERROR_CODE_SUCCESS; 9219 } 9220 9221 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9222 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9223 // abort if already active 9224 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9225 return ERROR_CODE_COMMAND_DISALLOWED; 9226 } 9227 // store request 9228 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9229 hci_stack->le_periodic_sync_options = options; 9230 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9231 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9232 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9233 hci_stack->le_periodic_sync_skip = skip; 9234 hci_stack->le_periodic_sync_timeout = sync_timeout; 9235 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9236 9237 hci_run(); 9238 return ERROR_CODE_SUCCESS; 9239 } 9240 9241 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9242 // abort if not requested 9243 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9244 return ERROR_CODE_COMMAND_DISALLOWED; 9245 } 9246 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9247 hci_run(); 9248 return ERROR_CODE_SUCCESS; 9249 } 9250 9251 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9252 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9253 return ERROR_CODE_COMMAND_DISALLOWED; 9254 } 9255 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9256 hci_run(); 9257 return ERROR_CODE_SUCCESS; 9258 } 9259 9260 #endif 9261 #endif 9262 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9263 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 9264 hci_iso_stream_state_t state) { 9265 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9266 if (iso_stream == NULL){ 9267 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9268 } else { 9269 iso_stream->iso_type = iso_type; 9270 iso_stream->state = state; 9271 iso_stream->con_handle = con_handle; 9272 iso_stream->group_id = group_id; 9273 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9274 return ERROR_CODE_SUCCESS; 9275 } 9276 } 9277 9278 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9279 btstack_linked_list_iterator_t it; 9280 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9281 while (btstack_linked_list_iterator_has_next(&it)){ 9282 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9283 if (iso_stream->con_handle == con_handle ) { 9284 return iso_stream; 9285 } 9286 } 9287 return NULL; 9288 } 9289 9290 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9291 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->con_handle, iso_stream->group_id); 9292 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9293 btstack_memory_hci_iso_stream_free(iso_stream); 9294 } 9295 9296 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9297 btstack_linked_list_iterator_t it; 9298 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9299 while (btstack_linked_list_iterator_has_next(&it)){ 9300 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9301 if ((iso_stream->group_id == group_id) && 9302 (iso_stream->iso_type == iso_type)){ 9303 btstack_linked_list_iterator_remove(&it); 9304 btstack_memory_hci_iso_stream_free(iso_stream); 9305 } 9306 } 9307 } 9308 9309 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9310 btstack_linked_list_iterator_t it; 9311 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9312 while (btstack_linked_list_iterator_has_next(&it)){ 9313 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9314 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9315 (iso_stream->group_id == group_id)){ 9316 btstack_linked_list_iterator_remove(&it); 9317 btstack_memory_hci_iso_stream_free(iso_stream); 9318 } 9319 } 9320 } 9321 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9322 btstack_linked_list_iterator_t it; 9323 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9324 while (btstack_linked_list_iterator_has_next(&it)){ 9325 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9326 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9327 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9328 } 9329 } 9330 } 9331 9332 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9333 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9334 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9335 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9336 return (sdu_len_offset + 2 + sdu_len) == size; 9337 } 9338 9339 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9340 if (hci_stack->iso_packet_handler == NULL) { 9341 return; 9342 } 9343 if (size < 4) { 9344 return; 9345 } 9346 9347 // parse header 9348 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9349 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9350 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9351 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9352 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9353 9354 // assert packet is complete 9355 if ((iso_data_len + 4u) != size){ 9356 return; 9357 } 9358 9359 if ((pb_flag & 0x01) == 0){ 9360 if (pb_flag == 0x02){ 9361 // The ISO_Data_Load field contains a header and a complete SDU. 9362 if (hci_iso_sdu_complete(packet, size)) { 9363 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9364 } 9365 } else { 9366 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9367 if (iso_stream == NULL){ 9368 return; 9369 } 9370 if (size > HCI_ISO_PAYLOAD_SIZE){ 9371 return; 9372 } 9373 memcpy(iso_stream->reassembly_buffer, packet, size); 9374 // fix pb_flag 9375 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9376 iso_stream->reassembly_pos = size; 9377 } 9378 } else { 9379 // iso_data_load contains continuation or last fragment of an SDU 9380 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9381 if (ts_flag != 0){ 9382 return; 9383 } 9384 // append fragment 9385 if (iso_stream == NULL){ 9386 return; 9387 } 9388 if (iso_stream->reassembly_pos == 0){ 9389 return; 9390 } 9391 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9392 // reset reassembly buffer 9393 iso_stream->reassembly_pos = 0; 9394 return; 9395 } 9396 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9397 iso_stream->reassembly_pos += iso_data_len; 9398 9399 // deliver if last fragment and SDU complete 9400 if (pb_flag == 0x03){ 9401 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9402 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9403 } 9404 iso_stream->reassembly_pos = 0; 9405 } 9406 } 9407 } 9408 9409 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9410 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9411 uint16_t pos = 0; 9412 event[pos++] = HCI_EVENT_META_GAP; 9413 event[pos++] = 4 + (2 * big->num_bis); 9414 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9415 event[pos++] = status; 9416 event[pos++] = big->big_handle; 9417 event[pos++] = big->num_bis; 9418 uint8_t i; 9419 for (i=0;i<big->num_bis;i++){ 9420 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9421 pos += 2; 9422 } 9423 hci_emit_event(event, pos, 0); 9424 } 9425 9426 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9427 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9428 uint16_t pos = 0; 9429 event[pos++] = HCI_EVENT_META_GAP; 9430 event[pos++] = 4 + (2 * cig->num_cis); 9431 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9432 event[pos++] = status; 9433 event[pos++] = cig->cig_id; 9434 event[pos++] = cig->num_cis; 9435 uint8_t i; 9436 for (i=0;i<cig->num_cis;i++){ 9437 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9438 pos += 2; 9439 } 9440 hci_emit_event(event, pos, 0); 9441 } 9442 9443 static void 9444 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status) { 9445 uint8_t event [7]; 9446 uint16_t pos = 0; 9447 event[pos++] = HCI_EVENT_META_GAP; 9448 event[pos++] = 5; 9449 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9450 event[pos++] = status; 9451 event[pos++] = cig_id; 9452 little_endian_store_16(event, pos, cis_con_handle); 9453 pos += 2; 9454 hci_emit_event(event, pos, 0); 9455 } 9456 9457 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9458 uint8_t event [4]; 9459 uint16_t pos = 0; 9460 event[pos++] = HCI_EVENT_META_GAP; 9461 event[pos++] = 2; 9462 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9463 event[pos++] = big->big_handle; 9464 hci_emit_event(event, pos, 0); 9465 } 9466 9467 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9468 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9469 uint16_t pos = 0; 9470 event[pos++] = HCI_EVENT_META_GAP; 9471 event[pos++] = 4; 9472 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9473 event[pos++] = status; 9474 event[pos++] = big_sync->big_handle; 9475 event[pos++] = big_sync->num_bis; 9476 uint8_t i; 9477 for (i=0;i<big_sync->num_bis;i++){ 9478 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9479 pos += 2; 9480 } 9481 hci_emit_event(event, pos, 0); 9482 } 9483 9484 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9485 uint8_t event [4]; 9486 uint16_t pos = 0; 9487 event[pos++] = HCI_EVENT_META_GAP; 9488 event[pos++] = 2; 9489 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9490 event[pos++] = big_handle; 9491 hci_emit_event(event, pos, 0); 9492 } 9493 9494 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9495 uint8_t event[6]; 9496 uint16_t pos = 0; 9497 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9498 event[pos++] = sizeof(event) - 2; 9499 event[pos++] = big->big_handle; 9500 event[pos++] = bis_index; 9501 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9502 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9503 } 9504 9505 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9506 uint8_t event[4]; 9507 uint16_t pos = 0; 9508 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9509 event[pos++] = sizeof(event) - 2; 9510 little_endian_store_16(event, pos, cis_con_handle); 9511 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9512 } 9513 9514 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9515 btstack_linked_list_iterator_t it; 9516 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9517 while (btstack_linked_list_iterator_has_next(&it)){ 9518 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9519 if ( big->big_handle == big_handle ) { 9520 return big; 9521 } 9522 } 9523 return NULL; 9524 } 9525 9526 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9527 btstack_linked_list_iterator_t it; 9528 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9529 while (btstack_linked_list_iterator_has_next(&it)){ 9530 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9531 if ( big_sync->big_handle == big_handle ) { 9532 return big_sync; 9533 } 9534 } 9535 return NULL; 9536 } 9537 9538 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9539 hci_stack->iso_packets_to_queue = num_packets; 9540 } 9541 9542 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9543 btstack_linked_list_iterator_t it; 9544 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9545 while (btstack_linked_list_iterator_has_next(&it)){ 9546 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9547 if ( cig->cig_id == cig_id ) { 9548 return cig; 9549 } 9550 } 9551 return NULL; 9552 } 9553 9554 static void hci_iso_notify_can_send_now(void){ 9555 9556 // BIG 9557 9558 btstack_linked_list_iterator_t it; 9559 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9560 while (btstack_linked_list_iterator_has_next(&it)){ 9561 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9562 // track number completed packet timestamps 9563 if (big->num_completed_timestamp_current_valid){ 9564 big->num_completed_timestamp_current_valid = false; 9565 if (big->num_completed_timestamp_previous_valid){ 9566 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9567 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9568 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9569 big->num_completed_timestamp_previous_ms); 9570 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9571 // to catch up, skip packet on all BIS 9572 uint8_t i; 9573 for (i=0;i<big->num_bis;i++){ 9574 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9575 if (iso_stream){ 9576 iso_stream->num_packets_to_skip++; 9577 } 9578 } 9579 } 9580 } 9581 big->num_completed_timestamp_previous_valid = true; 9582 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9583 } 9584 9585 if (big->can_send_now_requested){ 9586 // check if no outgoing iso packets pending and no can send now have to be emitted 9587 uint8_t i; 9588 bool can_send = true; 9589 uint8_t num_iso_queued_minimum = 0; 9590 for (i=0;i<big->num_bis;i++){ 9591 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9592 if (iso_stream == NULL) continue; 9593 // handle case where individual ISO packet was sent too late: 9594 // for each additionally queued packet, a new one needs to get skipped 9595 if (i==0){ 9596 num_iso_queued_minimum = iso_stream->num_packets_sent; 9597 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9598 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9599 iso_stream->num_packets_to_skip += num_packets_to_skip; 9600 iso_stream->num_packets_sent -= num_packets_to_skip; 9601 } 9602 // check if we can send now 9603 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9604 can_send = false; 9605 break; 9606 } 9607 } 9608 if (can_send){ 9609 // propagate can send now to individual streams 9610 big->can_send_now_requested = false; 9611 for (i=0;i<big->num_bis;i++){ 9612 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9613 iso_stream->emit_ready_to_send = true; 9614 } 9615 } 9616 } 9617 } 9618 9619 if (hci_stack->hci_packet_buffer_reserved) return; 9620 9621 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9622 while (btstack_linked_list_iterator_has_next(&it)){ 9623 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9624 // report bis ready 9625 uint8_t i; 9626 for (i=0;i<big->num_bis;i++){ 9627 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9628 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9629 iso_stream->emit_ready_to_send = false; 9630 hci_emit_bis_can_send_now(big, i); 9631 break; 9632 } 9633 } 9634 } 9635 9636 // CIS 9637 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9638 while (btstack_linked_list_iterator_has_next(&it)) { 9639 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9640 if ((iso_stream->can_send_now_requested) && 9641 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9642 iso_stream->can_send_now_requested = false; 9643 hci_emit_cis_can_send_now(iso_stream->con_handle); 9644 } 9645 } 9646 } 9647 9648 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9649 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9650 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9651 } 9652 if (big_params->num_bis == 0){ 9653 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9654 } 9655 if (big_params->num_bis > MAX_NR_BIS){ 9656 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9657 } 9658 9659 // reserve ISO Streams 9660 uint8_t i; 9661 uint8_t status = ERROR_CODE_SUCCESS; 9662 for (i=0;i<big_params->num_bis;i++){ 9663 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_CON_HANDLE_INVALID, big_params->big_handle, 9664 HCI_ISO_STREAM_STATE_REQUESTED); 9665 if (status != ERROR_CODE_SUCCESS) { 9666 break; 9667 } 9668 } 9669 9670 // free structs on error 9671 if (status != ERROR_CODE_SUCCESS){ 9672 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9673 return status; 9674 } 9675 9676 le_audio_big_t * big = storage; 9677 big->big_handle = big_params->big_handle; 9678 big->params = big_params; 9679 big->state = LE_AUDIO_BIG_STATE_CREATE; 9680 big->num_bis = big_params->num_bis; 9681 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9682 9683 hci_run(); 9684 9685 return ERROR_CODE_SUCCESS; 9686 } 9687 9688 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9689 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9690 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9691 } 9692 if (big_sync_params->num_bis == 0){ 9693 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9694 } 9695 if (big_sync_params->num_bis > MAX_NR_BIS){ 9696 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9697 } 9698 9699 le_audio_big_sync_t * big_sync = storage; 9700 big_sync->big_handle = big_sync_params->big_handle; 9701 big_sync->params = big_sync_params; 9702 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9703 big_sync->num_bis = big_sync_params->num_bis; 9704 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9705 9706 hci_run(); 9707 9708 return ERROR_CODE_SUCCESS; 9709 } 9710 9711 uint8_t gap_big_terminate(uint8_t big_handle){ 9712 le_audio_big_t * big = hci_big_for_handle(big_handle); 9713 if (big == NULL){ 9714 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9715 } 9716 switch (big->state){ 9717 case LE_AUDIO_BIG_STATE_CREATE: 9718 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9719 hci_emit_big_terminated(big); 9720 break; 9721 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9722 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9723 break; 9724 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9725 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9726 case LE_AUDIO_BIG_STATE_ACTIVE: 9727 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9728 hci_run(); 9729 break; 9730 default: 9731 return ERROR_CODE_COMMAND_DISALLOWED; 9732 } 9733 return ERROR_CODE_SUCCESS; 9734 } 9735 9736 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9737 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9738 if (big_sync == NULL){ 9739 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9740 } 9741 switch (big_sync->state){ 9742 case LE_AUDIO_BIG_STATE_CREATE: 9743 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9744 hci_emit_big_sync_stopped(big_handle); 9745 break; 9746 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9747 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9748 break; 9749 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9750 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9751 case LE_AUDIO_BIG_STATE_ACTIVE: 9752 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9753 hci_run(); 9754 break; 9755 default: 9756 return ERROR_CODE_COMMAND_DISALLOWED; 9757 } 9758 return ERROR_CODE_SUCCESS; 9759 } 9760 9761 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9762 le_audio_big_t * big = hci_big_for_handle(big_handle); 9763 if (big == NULL){ 9764 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9765 } 9766 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9767 return ERROR_CODE_COMMAND_DISALLOWED; 9768 } 9769 big->can_send_now_requested = true; 9770 hci_iso_notify_can_send_now(); 9771 return ERROR_CODE_SUCCESS; 9772 } 9773 9774 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 9775 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9776 if (iso_stream == NULL){ 9777 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9778 } 9779 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 9780 return ERROR_CODE_COMMAND_DISALLOWED; 9781 } 9782 iso_stream->can_send_now_requested = true; 9783 hci_iso_notify_can_send_now(); 9784 return ERROR_CODE_SUCCESS; 9785 } 9786 9787 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 9788 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 9789 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9790 } 9791 if (cig_params->num_cis == 0){ 9792 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9793 } 9794 if (cig_params->num_cis > MAX_NR_BIS){ 9795 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9796 } 9797 9798 // reserve ISO Streams 9799 uint8_t i; 9800 uint8_t status = ERROR_CODE_SUCCESS; 9801 for (i=0;i<cig_params->num_cis;i++){ 9802 status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_CON_HANDLE_INVALID, cig_params->cig_id, 9803 HCI_ISO_STREAM_STATE_REQUESTED); 9804 if (status != ERROR_CODE_SUCCESS) { 9805 break; 9806 } 9807 } 9808 9809 // free structs on error 9810 if (status != ERROR_CODE_SUCCESS){ 9811 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 9812 return status; 9813 } 9814 9815 le_audio_cig_t * cig = storage; 9816 cig->cig_id = cig_params->cig_id; 9817 cig->num_cis = cig_params->num_cis; 9818 cig->params = cig_params; 9819 cig->state = LE_AUDIO_CIG_STATE_CREATE; 9820 for (i=0;i<cig->num_cis;i++){ 9821 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 9822 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 9823 } 9824 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 9825 9826 hci_run(); 9827 9828 return ERROR_CODE_SUCCESS; 9829 } 9830 9831 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 9832 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 9833 if (cig == NULL){ 9834 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9835 } 9836 9837 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 9838 return ERROR_CODE_COMMAND_DISALLOWED; 9839 } 9840 9841 // store ACL Connection Handles 9842 uint8_t i; 9843 for (i=0;i<cig->num_cis;i++){ 9844 // check that all con handles exit 9845 hci_con_handle_t cis_handle = cis_con_handles[i]; 9846 uint8_t j; 9847 bool found = false; 9848 for (j=0;j<cig->num_cis;j++){ 9849 if (cig->cis_con_handles[j] == cis_handle){ 9850 cig->acl_con_handles[j] = acl_con_handles[j]; 9851 found = true; 9852 break; 9853 } 9854 } 9855 if (!found){ 9856 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9857 } 9858 } 9859 9860 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 9861 hci_run(); 9862 9863 return ERROR_CODE_SUCCESS; 9864 } 9865 9866 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_con_handle, hci_iso_stream_state_t state){ 9867 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9868 if (iso_stream != NULL){ 9869 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9870 } 9871 9872 uint8_t status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, cis_con_handle, 9873 HCI_ISO_GROUP_ID_INVALID, state); 9874 if (status == ERROR_CODE_SUCCESS){ 9875 return status; 9876 } 9877 9878 hci_run(); 9879 return ERROR_CODE_SUCCESS; 9880 } 9881 9882 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 9883 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 9884 } 9885 9886 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 9887 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 9888 } 9889 9890 9891 #endif 9892 #endif /* ENABLE_BLE */ 9893 9894 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9895 void hci_setup_test_connections_fuzz(void){ 9896 hci_connection_t * conn; 9897 9898 // default address: 66:55:44:33:00:01 9899 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9900 9901 // setup Controller info 9902 hci_stack->num_cmd_packets = 255; 9903 hci_stack->acl_packets_total_num = 255; 9904 9905 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9906 addr[5] = 0x01; 9907 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9908 conn->con_handle = addr[5]; 9909 conn->role = HCI_ROLE_SLAVE; 9910 conn->state = RECEIVED_CONNECTION_REQUEST; 9911 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9912 9913 // setup incoming Classic SCO connection with con handle 0x0002 9914 addr[5] = 0x02; 9915 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9916 conn->con_handle = addr[5]; 9917 conn->role = HCI_ROLE_SLAVE; 9918 conn->state = RECEIVED_CONNECTION_REQUEST; 9919 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9920 9921 // setup ready Classic ACL connection with con handle 0x0003 9922 addr[5] = 0x03; 9923 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9924 conn->con_handle = addr[5]; 9925 conn->role = HCI_ROLE_SLAVE; 9926 conn->state = OPEN; 9927 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9928 9929 // setup ready Classic SCO connection with con handle 0x0004 9930 addr[5] = 0x04; 9931 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9932 conn->con_handle = addr[5]; 9933 conn->role = HCI_ROLE_SLAVE; 9934 conn->state = OPEN; 9935 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9936 9937 // setup ready LE ACL connection with con handle 0x005 and public address 9938 addr[5] = 0x05; 9939 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9940 conn->con_handle = addr[5]; 9941 conn->role = HCI_ROLE_SLAVE; 9942 conn->state = OPEN; 9943 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9944 conn->sm_connection.sm_connection_encrypted = 1; 9945 } 9946 9947 void hci_free_connections_fuzz(void){ 9948 btstack_linked_list_iterator_t it; 9949 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9950 while (btstack_linked_list_iterator_has_next(&it)){ 9951 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9952 btstack_linked_list_iterator_remove(&it); 9953 btstack_memory_hci_connection_free(con); 9954 } 9955 } 9956 void hci_simulate_working_fuzz(void){ 9957 hci_stack->le_scanning_param_update = false; 9958 hci_init_done(); 9959 hci_stack->num_cmd_packets = 255; 9960 } 9961 #endif 9962