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 %x", 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 %04x", 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 if (!packet[2]){ 3474 conn->state = OPEN; 3475 conn->con_handle = little_endian_read_16(packet, 3); 3476 3477 // trigger write supervision timeout if we're master 3478 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3479 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3480 } 3481 3482 // trigger write automatic flush timeout 3483 if (hci_stack->automatic_flush_timeout != 0){ 3484 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3485 } 3486 3487 // restart timer 3488 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3489 btstack_run_loop_add_timer(&conn->timeout); 3490 3491 // trigger remote features for dedicated bonding 3492 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3493 hci_trigger_remote_features_for_connection(conn); 3494 } 3495 3496 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3497 3498 hci_emit_nr_connections_changed(); 3499 } else { 3500 // connection failed 3501 hci_handle_connection_failed(conn, packet[2]); 3502 } 3503 } 3504 break; 3505 3506 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3507 reverse_bd_addr(&packet[5], addr); 3508 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3509 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3510 if (packet[2]){ 3511 // connection failed 3512 if (conn){ 3513 hci_handle_connection_failed(conn, packet[2]); 3514 } 3515 break; 3516 } 3517 if (!conn) { 3518 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3519 } 3520 if (!conn) { 3521 break; 3522 } 3523 conn->state = OPEN; 3524 conn->con_handle = little_endian_read_16(packet, 3); 3525 3526 #ifdef ENABLE_SCO_OVER_HCI 3527 // update SCO 3528 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3529 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3530 } 3531 // trigger can send now 3532 if (hci_have_usb_transport()){ 3533 hci_stack->sco_can_send_now = true; 3534 } 3535 #endif 3536 #ifdef HAVE_SCO_TRANSPORT 3537 // configure sco transport 3538 if (hci_stack->sco_transport != NULL){ 3539 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3540 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3541 } 3542 #endif 3543 break; 3544 3545 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3546 handle = little_endian_read_16(packet, 3); 3547 conn = hci_connection_for_handle(handle); 3548 if (!conn) break; 3549 if (!packet[2]){ 3550 const uint8_t * features = &packet[5]; 3551 hci_handle_remote_features_page_0(conn, features); 3552 3553 // read extended features if possible 3554 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3555 && ((conn->remote_supported_features[0] & 2) != 0)) { 3556 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3557 break; 3558 } 3559 } 3560 hci_handle_remote_features_received(conn); 3561 break; 3562 3563 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3564 handle = little_endian_read_16(packet, 3); 3565 conn = hci_connection_for_handle(handle); 3566 if (!conn) break; 3567 // status = ok, page = 1 3568 if (!packet[2]) { 3569 uint8_t page_number = packet[5]; 3570 uint8_t maximum_page_number = packet[6]; 3571 const uint8_t * features = &packet[7]; 3572 bool done = false; 3573 switch (page_number){ 3574 case 1: 3575 hci_handle_remote_features_page_1(conn, features); 3576 if (maximum_page_number >= 2){ 3577 // get Secure Connections (Controller) from Page 2 if available 3578 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3579 } else { 3580 // otherwise, assume SC (Controller) == SC (Host) 3581 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3582 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3583 } 3584 done = true; 3585 } 3586 break; 3587 case 2: 3588 hci_handle_remote_features_page_2(conn, features); 3589 done = true; 3590 break; 3591 default: 3592 break; 3593 } 3594 if (!done) break; 3595 } 3596 hci_handle_remote_features_received(conn); 3597 break; 3598 3599 case HCI_EVENT_LINK_KEY_REQUEST: 3600 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3601 hci_event_link_key_request_get_bd_addr(packet, addr); 3602 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3603 if (!conn) break; 3604 3605 // lookup link key in db if not cached 3606 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3607 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3608 } 3609 3610 // response sent by hci_run() 3611 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3612 #endif 3613 break; 3614 3615 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3616 hci_event_link_key_request_get_bd_addr(packet, addr); 3617 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3618 if (!conn) break; 3619 3620 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3621 3622 // CVE-2020-26555: ignore NULL link key 3623 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3624 if (btstack_is_null(&packet[8], 16)) break; 3625 3626 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3627 // Change Connection Encryption keeps link key type 3628 if (link_key_type != CHANGED_COMBINATION_KEY){ 3629 conn->link_key_type = link_key_type; 3630 } 3631 3632 // cache link key. link keys stored in little-endian format for legacy reasons 3633 memcpy(&conn->link_key, &packet[8], 16); 3634 3635 // only store link key: 3636 // - if bondable enabled 3637 if (hci_stack->bondable == false) break; 3638 // - if security level sufficient 3639 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3640 // - for SSP, also check if remote side requested bonding as well 3641 if (conn->link_key_type != COMBINATION_KEY){ 3642 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3643 if (!remote_bonding){ 3644 break; 3645 } 3646 } 3647 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3648 break; 3649 } 3650 3651 case HCI_EVENT_PIN_CODE_REQUEST: 3652 hci_event_pin_code_request_get_bd_addr(packet, addr); 3653 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3654 if (!conn) break; 3655 3656 hci_pairing_started(conn, false); 3657 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3658 if (!hci_stack->bondable ){ 3659 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3660 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3661 hci_run(); 3662 return; 3663 } 3664 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3665 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3666 log_info("Level 4 required, but SC not supported -> abort"); 3667 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3668 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3669 hci_run(); 3670 return; 3671 } 3672 break; 3673 3674 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3675 hci_event_io_capability_response_get_bd_addr(packet, addr); 3676 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3677 if (!conn) break; 3678 3679 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3680 hci_pairing_started(conn, true); 3681 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3682 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3683 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3684 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3685 #endif 3686 break; 3687 3688 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3689 hci_event_io_capability_response_get_bd_addr(packet, addr); 3690 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3691 if (!conn) break; 3692 3693 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3694 hci_connection_timestamp(conn); 3695 hci_pairing_started(conn, true); 3696 break; 3697 3698 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3699 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3700 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3701 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3702 if (!conn) break; 3703 3704 hci_connection_timestamp(conn); 3705 3706 hci_pairing_started(conn, true); 3707 3708 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3709 break; 3710 #endif 3711 3712 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3713 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3714 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3715 if (!conn) break; 3716 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3717 if (hci_stack->ssp_auto_accept){ 3718 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3719 }; 3720 } else { 3721 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3722 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3723 // don't forward event to app 3724 hci_run(); 3725 return; 3726 } 3727 break; 3728 3729 case HCI_EVENT_USER_PASSKEY_REQUEST: 3730 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3731 if (hci_stack->ssp_auto_accept){ 3732 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3733 }; 3734 break; 3735 3736 case HCI_EVENT_MODE_CHANGE: 3737 handle = hci_event_mode_change_get_handle(packet); 3738 conn = hci_connection_for_handle(handle); 3739 if (!conn) break; 3740 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3741 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3742 break; 3743 #endif 3744 3745 case HCI_EVENT_ENCRYPTION_CHANGE: 3746 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3747 handle = hci_event_encryption_change_get_connection_handle(packet); 3748 conn = hci_connection_for_handle(handle); 3749 if (!conn) break; 3750 if (hci_event_encryption_change_get_status(packet) == 0u) { 3751 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3752 if (encryption_enabled){ 3753 if (hci_is_le_connection(conn)){ 3754 // For LE, we accept connection as encrypted 3755 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3756 } 3757 #ifdef ENABLE_CLASSIC 3758 else { 3759 3760 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3761 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3762 bool connected_uses_aes_ccm = encryption_enabled == 2; 3763 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3764 log_info("SC during pairing, but only E0 now -> abort"); 3765 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3766 break; 3767 } 3768 3769 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3770 if (connected_uses_aes_ccm){ 3771 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3772 } 3773 3774 #ifdef ENABLE_TESTING_SUPPORT 3775 // work around for issue with PTS dongle 3776 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3777 #endif 3778 // validate encryption key size 3779 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3780 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3781 // already got encryption key size 3782 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3783 } else { 3784 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3785 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3786 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3787 } else { 3788 // if not, pretend everything is perfect 3789 hci_handle_read_encryption_key_size_complete(conn, 16); 3790 } 3791 } 3792 } 3793 #endif 3794 } else { 3795 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3796 } 3797 } else { 3798 uint8_t status = hci_event_encryption_change_get_status(packet); 3799 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3800 conn->bonding_flags &= ~BONDING_DEDICATED; 3801 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3802 conn->bonding_status = status; 3803 } 3804 } 3805 3806 break; 3807 3808 #ifdef ENABLE_CLASSIC 3809 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3810 handle = hci_event_authentication_complete_get_connection_handle(packet); 3811 conn = hci_connection_for_handle(handle); 3812 if (!conn) break; 3813 3814 // clear authentication active flag 3815 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3816 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3817 3818 // authenticated only if auth status == 0 3819 if (hci_event_authentication_complete_get_status(packet) == 0){ 3820 // authenticated 3821 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3822 3823 // If not already encrypted, start encryption 3824 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3825 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3826 break; 3827 } 3828 } 3829 3830 // emit updated security level 3831 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3832 break; 3833 3834 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3835 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3836 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3837 if (!conn) break; 3838 3839 // treat successfully paired connection as authenticated 3840 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3841 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3842 } 3843 3844 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3845 break; 3846 #endif 3847 3848 // HCI_EVENT_DISCONNECTION_COMPLETE 3849 // has been split, to first notify stack before shutting connection down 3850 // see end of function, too. 3851 case HCI_EVENT_DISCONNECTION_COMPLETE: 3852 if (packet[2]) break; // status != 0 3853 handle = little_endian_read_16(packet, 3); 3854 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3855 if (hci_stack->acl_fragmentation_total_size > 0u) { 3856 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3857 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3858 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3859 hci_stack->acl_fragmentation_total_size = 0; 3860 hci_stack->acl_fragmentation_pos = 0; 3861 if (release_buffer){ 3862 hci_release_packet_buffer(); 3863 } 3864 } 3865 } 3866 3867 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3868 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3869 if (hci_stack->iso_fragmentation_total_size > 0u) { 3870 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3871 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3872 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3873 hci_stack->iso_fragmentation_total_size = 0; 3874 hci_stack->iso_fragmentation_pos = 0; 3875 if (release_buffer){ 3876 hci_release_packet_buffer(); 3877 } 3878 } 3879 } 3880 3881 // finalize iso stream if handle matches 3882 iso_stream = hci_iso_stream_for_con_handle(handle); 3883 if (iso_stream != NULL){ 3884 hci_iso_stream_finalize(iso_stream); 3885 break; 3886 } 3887 #endif 3888 3889 conn = hci_connection_for_handle(handle); 3890 if (!conn) break; 3891 #ifdef ENABLE_CLASSIC 3892 // pairing failed if it was ongoing 3893 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3894 #endif 3895 3896 // emit dedicatd bonding event 3897 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3898 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3899 } 3900 3901 // mark connection for shutdown, stop timers, reset state 3902 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3903 hci_connection_stop_timer(conn); 3904 hci_connection_init(conn); 3905 3906 #ifdef ENABLE_BLE 3907 #ifdef ENABLE_LE_PERIPHERAL 3908 // re-enable advertisements for le connections if active 3909 if (hci_is_le_connection(conn)){ 3910 hci_update_advertisements_enabled_for_current_roles(); 3911 } 3912 #endif 3913 #endif 3914 break; 3915 3916 case HCI_EVENT_HARDWARE_ERROR: 3917 log_error("Hardware Error: 0x%02x", packet[2]); 3918 if (hci_stack->hardware_error_callback){ 3919 (*hci_stack->hardware_error_callback)(packet[2]); 3920 } else { 3921 // if no special requests, just reboot stack 3922 hci_power_control_off(); 3923 hci_power_control_on(); 3924 } 3925 break; 3926 3927 #ifdef ENABLE_CLASSIC 3928 case HCI_EVENT_ROLE_CHANGE: 3929 if (packet[2]) break; // status != 0 3930 reverse_bd_addr(&packet[3], addr); 3931 addr_type = BD_ADDR_TYPE_ACL; 3932 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3933 if (!conn) break; 3934 conn->role = packet[9]; 3935 break; 3936 #endif 3937 3938 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3939 // release packet buffer only for asynchronous transport and if there are not further fragments 3940 if (hci_transport_synchronous()) { 3941 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3942 return; // instead of break: to avoid re-entering hci_run() 3943 } 3944 hci_stack->acl_fragmentation_tx_active = 0; 3945 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3946 hci_stack->iso_fragmentation_tx_active = 0; 3947 if (hci_stack->iso_fragmentation_total_size) break; 3948 #endif 3949 if (hci_stack->acl_fragmentation_total_size) break; 3950 hci_release_packet_buffer(); 3951 3952 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3953 hci_iso_notify_can_send_now(); 3954 #endif 3955 // L2CAP receives this event via the hci_emit_event below 3956 3957 #ifdef ENABLE_CLASSIC 3958 // For SCO, we do the can_send_now_check here 3959 hci_notify_if_sco_can_send_now(); 3960 #endif 3961 break; 3962 3963 #ifdef ENABLE_CLASSIC 3964 case HCI_EVENT_SCO_CAN_SEND_NOW: 3965 // For SCO, we do the can_send_now_check here 3966 hci_stack->sco_can_send_now = true; 3967 hci_notify_if_sco_can_send_now(); 3968 return; 3969 3970 // explode inquriy results for easier consumption 3971 case HCI_EVENT_INQUIRY_RESULT: 3972 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3973 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3974 gap_inquiry_explode(packet, size); 3975 break; 3976 #endif 3977 3978 #ifdef ENABLE_BLE 3979 case HCI_EVENT_LE_META: 3980 switch (packet[2]){ 3981 #ifdef ENABLE_LE_CENTRAL 3982 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3983 if (!hci_stack->le_scanning_enabled) break; 3984 le_handle_advertisement_report(packet, size); 3985 break; 3986 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3987 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3988 if (!hci_stack->le_scanning_enabled) break; 3989 le_handle_extended_advertisement_report(packet, size); 3990 break; 3991 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 3992 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 3993 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 3994 break; 3995 #endif 3996 #endif 3997 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3998 event_handle_le_connection_complete(packet); 3999 break; 4000 4001 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4002 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4003 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4004 conn = hci_connection_for_handle(handle); 4005 if (!conn) break; 4006 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4007 break; 4008 4009 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4010 // connection 4011 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4012 conn = hci_connection_for_handle(handle); 4013 if (conn) { 4014 // read arguments 4015 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4016 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4017 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4018 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4019 4020 // validate against current connection parameter range 4021 le_connection_parameter_range_t existing_range; 4022 gap_get_connection_parameter_range(&existing_range); 4023 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4024 if (update_parameter){ 4025 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4026 conn->le_conn_interval_min = le_conn_interval_min; 4027 conn->le_conn_interval_max = le_conn_interval_max; 4028 conn->le_conn_latency = le_conn_latency; 4029 conn->le_supervision_timeout = le_supervision_timeout; 4030 } else { 4031 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4032 } 4033 } 4034 break; 4035 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4036 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4037 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4038 conn = hci_connection_for_handle(handle); 4039 if (conn) { 4040 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4041 } 4042 break; 4043 #endif 4044 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4045 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4046 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4047 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4048 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4049 iso_stream = hci_iso_stream_for_con_handle(handle); 4050 btstack_assert(iso_stream != NULL); 4051 // track SDU 4052 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4053 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4054 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4055 // CIS Accept by Peripheral 4056 if (status == ERROR_CODE_SUCCESS){ 4057 if (iso_stream->max_sdu_p_to_c > 0){ 4058 // we're peripheral and we will send data 4059 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4060 } else { 4061 // we're peripheral and we will only receive data 4062 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4063 } 4064 } else { 4065 hci_iso_stream_finalize(iso_stream); 4066 hci_emit_cis_created(HCI_ISO_GROUP_ID_INVALID, handle, status); 4067 } 4068 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4069 } else { 4070 // CIG Setup by Central 4071 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4072 btstack_assert(cig != NULL); 4073 // update iso stream state 4074 if (status == ERROR_CODE_SUCCESS){ 4075 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4076 } else { 4077 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4078 } 4079 // update cig state 4080 uint8_t i; 4081 for (i=0;i<cig->num_cis;i++){ 4082 if (cig->cis_con_handles[i] == handle){ 4083 cig->cis_setup_active[i] = false; 4084 if (status == ERROR_CODE_SUCCESS){ 4085 cig->cis_setup_active[i] = false; 4086 cig->cis_established[i] = true; 4087 } else { 4088 hci_emit_cis_created(cig->cig_id, handle, status); 4089 } 4090 } 4091 } 4092 4093 // trigger iso path setup if complete 4094 bool setup_active = false; 4095 for (i=0;i<cig->num_cis;i++){ 4096 setup_active |= cig->cis_setup_active[i]; 4097 } 4098 if (setup_active == false){ 4099 cig->state_vars.next_cis = 0; 4100 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4101 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4102 } 4103 } 4104 } 4105 break; 4106 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4107 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4108 big = hci_big_for_handle(packet[4]); 4109 if (big != NULL){ 4110 uint8_t status = packet[3]; 4111 if (status == ERROR_CODE_SUCCESS){ 4112 // store bis_con_handles and trigger iso path setup 4113 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4114 uint8_t i; 4115 for (i=0;i<num_bis;i++){ 4116 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4117 big->bis_con_handles[i] = bis_handle; 4118 // assign bis handle 4119 btstack_linked_list_iterator_t it; 4120 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4121 while (btstack_linked_list_iterator_has_next(&it)){ 4122 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4123 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4124 (iso_stream->group_id == big->big_handle)){ 4125 iso_stream->con_handle = bis_handle; 4126 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4127 break; 4128 } 4129 } 4130 } 4131 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4132 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4133 big->state_vars.next_bis = 0; 4134 } 4135 } else { 4136 // create BIG failed or has been stopped by us 4137 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4138 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4139 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4140 hci_emit_big_created(big, status); 4141 } else { 4142 hci_emit_big_terminated(big); 4143 } 4144 } 4145 } 4146 break; 4147 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4148 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4149 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4150 if (big != NULL){ 4151 // finalize associated ISO streams 4152 btstack_linked_list_iterator_t it; 4153 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4154 while (btstack_linked_list_iterator_has_next(&it)){ 4155 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4156 if (iso_stream->group_id == big->big_handle){ 4157 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->con_handle); 4158 btstack_linked_list_iterator_remove(&it); 4159 btstack_memory_hci_iso_stream_free(iso_stream); 4160 } 4161 } 4162 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4163 switch (big->state){ 4164 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4165 hci_emit_big_created(big, big->state_vars.status); 4166 break; 4167 default: 4168 hci_emit_big_terminated(big); 4169 break; 4170 } 4171 } 4172 break; 4173 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4174 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4175 big_sync = hci_big_sync_for_handle(packet[4]); 4176 if (big_sync != NULL){ 4177 uint8_t status = packet[3]; 4178 uint8_t big_handle = packet[4]; 4179 if (status == ERROR_CODE_SUCCESS){ 4180 // store bis_con_handles and trigger iso path setup 4181 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4182 uint8_t i; 4183 for (i=0;i<num_bis;i++){ 4184 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4185 } 4186 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4187 // trigger iso path setup 4188 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4189 big_sync->state_vars.next_bis = 0; 4190 } 4191 } else { 4192 // create BIG Sync failed or has been stopped by us 4193 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4194 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4195 hci_emit_big_sync_created(big_sync, status); 4196 } else { 4197 hci_emit_big_sync_stopped(big_handle); 4198 } 4199 } 4200 } 4201 break; 4202 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4203 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4204 big_sync = hci_big_sync_for_handle(packet[4]); 4205 if (big_sync != NULL){ 4206 uint8_t big_handle = packet[4]; 4207 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4208 hci_emit_big_sync_stopped(big_handle); 4209 } 4210 break; 4211 #endif 4212 default: 4213 break; 4214 } 4215 break; 4216 #endif 4217 case HCI_EVENT_VENDOR_SPECIFIC: 4218 // Vendor specific commands often create vendor specific event instead of num completed packets 4219 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4220 switch (hci_stack->manufacturer){ 4221 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4222 hci_stack->num_cmd_packets = 1; 4223 break; 4224 default: 4225 break; 4226 } 4227 break; 4228 default: 4229 break; 4230 } 4231 4232 handle_event_for_current_stack_state(packet, size); 4233 4234 // notify upper stack 4235 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4236 4237 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4238 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4239 handle = little_endian_read_16(packet, 3); 4240 hci_connection_t * aConn = hci_connection_for_handle(handle); 4241 // discard connection if app did not trigger a reconnect in the event handler 4242 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4243 hci_shutdown_connection(aConn); 4244 } 4245 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4246 hci_controller_dump_packets(); 4247 #endif 4248 } 4249 4250 // execute main loop 4251 hci_run(); 4252 } 4253 4254 #ifdef ENABLE_CLASSIC 4255 4256 #ifdef ENABLE_SCO_OVER_HCI 4257 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4258 static void sco_schedule_tx(hci_connection_t * conn); 4259 4260 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4261 log_debug("SCO TX Timeout"); 4262 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4263 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4264 if (!conn) return; 4265 4266 // trigger send 4267 conn->sco_tx_ready = 1; 4268 // extra packet if CVSD but SCO buffer is too short 4269 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4270 conn->sco_tx_ready++; 4271 } 4272 hci_notify_if_sco_can_send_now(); 4273 } 4274 4275 4276 #define SCO_TX_AFTER_RX_MS (6) 4277 4278 static void sco_schedule_tx(hci_connection_t * conn){ 4279 4280 uint32_t now = btstack_run_loop_get_time_ms(); 4281 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4282 int time_delta_ms = sco_tx_ms - now; 4283 4284 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4285 4286 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4287 btstack_run_loop_remove_timer(timer); 4288 btstack_run_loop_set_timer(timer, time_delta_ms); 4289 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4290 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4291 btstack_run_loop_add_timer(timer); 4292 } 4293 #endif 4294 4295 static void sco_handler(uint8_t * packet, uint16_t size){ 4296 // lookup connection struct 4297 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4298 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4299 if (!conn) return; 4300 4301 #ifdef ENABLE_SCO_OVER_HCI 4302 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4303 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4304 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4305 packet[2] = 0x3c; 4306 memmove(&packet[3], &packet[23], 63); 4307 size = 63; 4308 } 4309 } 4310 4311 if (hci_have_usb_transport()){ 4312 // Nothing to do 4313 } else { 4314 // 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); 4315 if (hci_stack->synchronous_flow_control_enabled == 0){ 4316 uint32_t now = btstack_run_loop_get_time_ms(); 4317 4318 if (!conn->sco_rx_valid){ 4319 // ignore first 10 packets 4320 conn->sco_rx_count++; 4321 // log_debug("sco rx count %u", conn->sco_rx_count); 4322 if (conn->sco_rx_count == 10) { 4323 // use first timestamp as is and pretent it just started 4324 conn->sco_rx_ms = now; 4325 conn->sco_rx_valid = 1; 4326 conn->sco_rx_count = 0; 4327 sco_schedule_tx(conn); 4328 } 4329 } else { 4330 // track expected arrival timme 4331 conn->sco_rx_count++; 4332 conn->sco_rx_ms += 7; 4333 int delta = (int32_t) (now - conn->sco_rx_ms); 4334 if (delta > 0){ 4335 conn->sco_rx_ms++; 4336 } 4337 // log_debug("sco rx %u", conn->sco_rx_ms); 4338 sco_schedule_tx(conn); 4339 } 4340 } 4341 } 4342 #endif 4343 4344 // deliver to app 4345 if (hci_stack->sco_packet_handler) { 4346 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4347 } 4348 4349 #ifdef HAVE_SCO_TRANSPORT 4350 // We can send one packet for each received packet 4351 conn->sco_tx_ready++; 4352 hci_notify_if_sco_can_send_now(); 4353 #endif 4354 4355 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4356 conn->num_packets_completed++; 4357 hci_stack->host_completed_packets = 1; 4358 hci_run(); 4359 #endif 4360 } 4361 #endif 4362 4363 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4364 hci_dump_packet(packet_type, 1, packet, size); 4365 switch (packet_type) { 4366 case HCI_EVENT_PACKET: 4367 event_handler(packet, size); 4368 break; 4369 case HCI_ACL_DATA_PACKET: 4370 acl_handler(packet, size); 4371 break; 4372 #ifdef ENABLE_CLASSIC 4373 case HCI_SCO_DATA_PACKET: 4374 sco_handler(packet, size); 4375 break; 4376 #endif 4377 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4378 case HCI_ISO_DATA_PACKET: 4379 hci_iso_packet_handler(packet, size); 4380 break; 4381 #endif 4382 default: 4383 break; 4384 } 4385 } 4386 4387 /** 4388 * @brief Add event packet handler. 4389 */ 4390 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4391 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4392 } 4393 4394 /** 4395 * @brief Remove event packet handler. 4396 */ 4397 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4398 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4399 } 4400 4401 /** Register HCI packet handlers */ 4402 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4403 hci_stack->acl_packet_handler = handler; 4404 } 4405 4406 #ifdef ENABLE_CLASSIC 4407 /** 4408 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4409 */ 4410 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4411 hci_stack->sco_packet_handler = handler; 4412 } 4413 #endif 4414 4415 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4416 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4417 hci_stack->iso_packet_handler = handler; 4418 } 4419 #endif 4420 4421 static void hci_state_reset(void){ 4422 // no connections yet 4423 hci_stack->connections = NULL; 4424 4425 // keep discoverable/connectable as this has been requested by the client(s) 4426 // hci_stack->discoverable = 0; 4427 // hci_stack->connectable = 0; 4428 // hci_stack->bondable = 1; 4429 // hci_stack->own_addr_type = 0; 4430 4431 // buffer is free 4432 hci_stack->hci_packet_buffer_reserved = false; 4433 4434 // no pending cmds 4435 hci_stack->decline_reason = 0; 4436 4437 hci_stack->secure_connections_active = false; 4438 4439 #ifdef ENABLE_CLASSIC 4440 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4441 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4442 4443 hci_stack->gap_tasks_classic = 4444 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4445 GAP_TASK_SET_CLASS_OF_DEVICE | 4446 GAP_TASK_SET_LOCAL_NAME | 4447 GAP_TASK_SET_EIR_DATA | 4448 GAP_TASK_WRITE_SCAN_ENABLE | 4449 GAP_TASK_WRITE_PAGE_TIMEOUT; 4450 #endif 4451 4452 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4453 hci_stack->classic_read_local_oob_data = false; 4454 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4455 #endif 4456 4457 // LE 4458 #ifdef ENABLE_BLE 4459 memset(hci_stack->le_random_address, 0, 6); 4460 hci_stack->le_random_address_set = 0; 4461 #endif 4462 #ifdef ENABLE_LE_CENTRAL 4463 hci_stack->le_scanning_active = false; 4464 hci_stack->le_scanning_param_update = true; 4465 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4466 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4467 hci_stack->le_whitelist_capacity = 0; 4468 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4469 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4470 #endif 4471 #endif 4472 #ifdef ENABLE_LE_PERIPHERAL 4473 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4474 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4475 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4476 } 4477 if (hci_stack->le_advertisements_data != NULL){ 4478 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4479 } 4480 #endif 4481 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4482 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4483 #endif 4484 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4485 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4486 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4487 #endif 4488 } 4489 4490 #ifdef ENABLE_CLASSIC 4491 /** 4492 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4493 */ 4494 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4495 // store and open remote device db 4496 hci_stack->link_key_db = link_key_db; 4497 if (hci_stack->link_key_db) { 4498 hci_stack->link_key_db->open(); 4499 } 4500 } 4501 #endif 4502 4503 void hci_init(const hci_transport_t *transport, const void *config){ 4504 4505 #ifdef HAVE_MALLOC 4506 if (!hci_stack) { 4507 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4508 } 4509 #else 4510 hci_stack = &hci_stack_static; 4511 #endif 4512 memset(hci_stack, 0, sizeof(hci_stack_t)); 4513 4514 // reference to use transport layer implementation 4515 hci_stack->hci_transport = transport; 4516 4517 // reference to used config 4518 hci_stack->config = config; 4519 4520 // setup pointer for outgoing packet buffer 4521 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4522 4523 // max acl payload size defined in config.h 4524 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4525 4526 // register packet handlers with transport 4527 transport->register_packet_handler(&packet_handler); 4528 4529 hci_stack->state = HCI_STATE_OFF; 4530 4531 // class of device 4532 hci_stack->class_of_device = 0x007a020c; // Smartphone 4533 4534 // bondable by default 4535 hci_stack->bondable = 1; 4536 4537 #ifdef ENABLE_CLASSIC 4538 // classic name 4539 hci_stack->local_name = default_classic_name; 4540 4541 // Master slave policy 4542 hci_stack->master_slave_policy = 1; 4543 4544 // Allow Role Switch 4545 hci_stack->allow_role_switch = 1; 4546 4547 // Default / minimum security level = 2 4548 hci_stack->gap_security_level = LEVEL_2; 4549 4550 // Default Security Mode 4 4551 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4552 4553 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4554 hci_stack->gap_required_encyrption_key_size = 7; 4555 4556 // Link Supervision Timeout 4557 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4558 4559 #endif 4560 4561 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4562 hci_stack->ssp_enable = 1; 4563 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4564 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4565 hci_stack->ssp_auto_accept = 1; 4566 4567 // Secure Connections: enable (requires support from Controller) 4568 hci_stack->secure_connections_enable = true; 4569 4570 // voice setting - signed 16 bit pcm data with CVSD over the air 4571 hci_stack->sco_voice_setting = 0x60; 4572 4573 #ifdef ENABLE_LE_CENTRAL 4574 // connection parameter to use for outgoing connections 4575 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4576 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4577 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4578 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4579 hci_stack->le_connection_latency = 4; // 4 4580 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4581 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4582 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4583 4584 // default LE Scanning 4585 hci_stack->le_scan_type = 0x1; // active 4586 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4587 hci_stack->le_scan_window = 0x30; // 30 ms 4588 #endif 4589 4590 #ifdef ENABLE_LE_PERIPHERAL 4591 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4592 #endif 4593 4594 // connection parameter range used to answer connection parameter update requests in l2cap 4595 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4596 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4597 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4598 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4599 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4600 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4601 4602 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4603 hci_stack->iso_packets_to_queue = 1; 4604 #endif 4605 4606 hci_state_reset(); 4607 } 4608 4609 void hci_deinit(void){ 4610 btstack_run_loop_remove_timer(&hci_stack->timeout); 4611 #ifdef HAVE_MALLOC 4612 if (hci_stack) { 4613 free(hci_stack); 4614 } 4615 #endif 4616 hci_stack = NULL; 4617 4618 #ifdef ENABLE_CLASSIC 4619 disable_l2cap_timeouts = 0; 4620 #endif 4621 } 4622 4623 /** 4624 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4625 */ 4626 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4627 hci_stack->chipset = chipset_driver; 4628 4629 // reset chipset driver - init is also called on power_up 4630 if (hci_stack->chipset && hci_stack->chipset->init){ 4631 hci_stack->chipset->init(hci_stack->config); 4632 } 4633 } 4634 4635 /** 4636 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4637 */ 4638 void hci_set_control(const btstack_control_t *hardware_control){ 4639 // references to used control implementation 4640 hci_stack->control = hardware_control; 4641 // init with transport config 4642 hardware_control->init(hci_stack->config); 4643 } 4644 4645 static void hci_discard_connections(void){ 4646 btstack_linked_list_iterator_t it; 4647 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4648 while (btstack_linked_list_iterator_has_next(&it)){ 4649 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4650 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4651 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4652 hci_shutdown_connection(connection); 4653 } 4654 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4655 while (hci_stack->iso_streams != NULL){ 4656 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4657 } 4658 #endif 4659 } 4660 4661 void hci_close(void){ 4662 4663 #ifdef ENABLE_CLASSIC 4664 // close remote device db 4665 if (hci_stack->link_key_db) { 4666 hci_stack->link_key_db->close(); 4667 } 4668 #endif 4669 4670 hci_discard_connections(); 4671 4672 hci_power_control(HCI_POWER_OFF); 4673 4674 #ifdef HAVE_MALLOC 4675 free(hci_stack); 4676 #endif 4677 hci_stack = NULL; 4678 } 4679 4680 #ifdef HAVE_SCO_TRANSPORT 4681 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4682 hci_stack->sco_transport = sco_transport; 4683 sco_transport->register_packet_handler(&packet_handler); 4684 } 4685 #endif 4686 4687 #ifdef ENABLE_CLASSIC 4688 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4689 // validate ranage and set 4690 if (encryption_key_size < 7) return; 4691 if (encryption_key_size > 16) return; 4692 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4693 } 4694 4695 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4696 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4697 hci_stack->gap_security_mode = security_mode; 4698 return ERROR_CODE_SUCCESS; 4699 } else { 4700 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4701 } 4702 } 4703 4704 gap_security_mode_t gap_get_security_mode(void){ 4705 return hci_stack->gap_security_mode; 4706 } 4707 4708 void gap_set_security_level(gap_security_level_t security_level){ 4709 hci_stack->gap_security_level = security_level; 4710 } 4711 4712 gap_security_level_t gap_get_security_level(void){ 4713 if (hci_stack->gap_secure_connections_only_mode){ 4714 return LEVEL_4; 4715 } 4716 return hci_stack->gap_security_level; 4717 } 4718 4719 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4720 hci_stack->gap_minimal_service_security_level = security_level; 4721 } 4722 4723 void gap_set_secure_connections_only_mode(bool enable){ 4724 hci_stack->gap_secure_connections_only_mode = enable; 4725 } 4726 4727 bool gap_get_secure_connections_only_mode(void){ 4728 return hci_stack->gap_secure_connections_only_mode; 4729 } 4730 #endif 4731 4732 #ifdef ENABLE_CLASSIC 4733 void gap_set_class_of_device(uint32_t class_of_device){ 4734 hci_stack->class_of_device = class_of_device; 4735 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4736 hci_run(); 4737 } 4738 4739 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4740 hci_stack->default_link_policy_settings = default_link_policy_settings; 4741 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4742 hci_run(); 4743 } 4744 4745 void gap_set_allow_role_switch(bool allow_role_switch){ 4746 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4747 } 4748 4749 uint8_t hci_get_allow_role_switch(void){ 4750 return hci_stack->allow_role_switch; 4751 } 4752 4753 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4754 hci_stack->link_supervision_timeout = link_supervision_timeout; 4755 } 4756 4757 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4758 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4759 } 4760 4761 uint16_t hci_automatic_flush_timeout(void){ 4762 return hci_stack->automatic_flush_timeout; 4763 } 4764 4765 void hci_disable_l2cap_timeout_check(void){ 4766 disable_l2cap_timeouts = 1; 4767 } 4768 #endif 4769 4770 #ifndef HAVE_HOST_CONTROLLER_API 4771 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4772 void hci_set_bd_addr(bd_addr_t addr){ 4773 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4774 hci_stack->custom_bd_addr_set = 1; 4775 } 4776 #endif 4777 4778 // State-Module-Driver overview 4779 // state module low-level 4780 // HCI_STATE_OFF off close 4781 // HCI_STATE_INITIALIZING, on open 4782 // HCI_STATE_WORKING, on open 4783 // HCI_STATE_HALTING, on open 4784 // HCI_STATE_SLEEPING, off/sleep close 4785 // HCI_STATE_FALLING_ASLEEP on open 4786 4787 static int hci_power_control_on(void){ 4788 4789 // power on 4790 int err = 0; 4791 if (hci_stack->control && hci_stack->control->on){ 4792 err = (*hci_stack->control->on)(); 4793 } 4794 if (err){ 4795 log_error( "POWER_ON failed"); 4796 hci_emit_hci_open_failed(); 4797 return err; 4798 } 4799 4800 // int chipset driver 4801 if (hci_stack->chipset && hci_stack->chipset->init){ 4802 hci_stack->chipset->init(hci_stack->config); 4803 } 4804 4805 // init transport 4806 if (hci_stack->hci_transport->init){ 4807 hci_stack->hci_transport->init(hci_stack->config); 4808 } 4809 4810 // open transport 4811 err = hci_stack->hci_transport->open(); 4812 if (err){ 4813 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4814 if (hci_stack->control && hci_stack->control->off){ 4815 (*hci_stack->control->off)(); 4816 } 4817 hci_emit_hci_open_failed(); 4818 return err; 4819 } 4820 return 0; 4821 } 4822 4823 static void hci_power_control_off(void){ 4824 4825 log_info("hci_power_control_off"); 4826 4827 // close low-level device 4828 hci_stack->hci_transport->close(); 4829 4830 log_info("hci_power_control_off - hci_transport closed"); 4831 4832 // power off 4833 if (hci_stack->control && hci_stack->control->off){ 4834 (*hci_stack->control->off)(); 4835 } 4836 4837 log_info("hci_power_control_off - control closed"); 4838 4839 hci_stack->state = HCI_STATE_OFF; 4840 } 4841 4842 static void hci_power_control_sleep(void){ 4843 4844 log_info("hci_power_control_sleep"); 4845 4846 #if 0 4847 // don't close serial port during sleep 4848 4849 // close low-level device 4850 hci_stack->hci_transport->close(hci_stack->config); 4851 #endif 4852 4853 // sleep mode 4854 if (hci_stack->control && hci_stack->control->sleep){ 4855 (*hci_stack->control->sleep)(); 4856 } 4857 4858 hci_stack->state = HCI_STATE_SLEEPING; 4859 } 4860 4861 static int hci_power_control_wake(void){ 4862 4863 log_info("hci_power_control_wake"); 4864 4865 // wake on 4866 if (hci_stack->control && hci_stack->control->wake){ 4867 (*hci_stack->control->wake)(); 4868 } 4869 4870 #if 0 4871 // open low-level device 4872 int err = hci_stack->hci_transport->open(hci_stack->config); 4873 if (err){ 4874 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4875 if (hci_stack->control && hci_stack->control->off){ 4876 (*hci_stack->control->off)(); 4877 } 4878 hci_emit_hci_open_failed(); 4879 return err; 4880 } 4881 #endif 4882 4883 return 0; 4884 } 4885 4886 static void hci_power_enter_initializing_state(void){ 4887 // set up state machine 4888 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4889 hci_stack->hci_packet_buffer_reserved = false; 4890 hci_stack->state = HCI_STATE_INITIALIZING; 4891 hci_stack->substate = HCI_INIT_SEND_RESET; 4892 } 4893 4894 static void hci_power_enter_halting_state(void){ 4895 #ifdef ENABLE_BLE 4896 hci_whitelist_free(); 4897 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4898 hci_periodic_advertiser_list_free(); 4899 #endif 4900 #endif 4901 // see hci_run 4902 hci_stack->state = HCI_STATE_HALTING; 4903 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4904 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4905 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4906 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4907 btstack_run_loop_add_timer(&hci_stack->timeout); 4908 } 4909 4910 // returns error 4911 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4912 int err; 4913 switch (power_mode){ 4914 case HCI_POWER_ON: 4915 err = hci_power_control_on(); 4916 if (err != 0) { 4917 log_error("hci_power_control_on() error %d", err); 4918 return err; 4919 } 4920 hci_power_enter_initializing_state(); 4921 break; 4922 case HCI_POWER_OFF: 4923 // do nothing 4924 break; 4925 case HCI_POWER_SLEEP: 4926 // do nothing (with SLEEP == OFF) 4927 break; 4928 default: 4929 btstack_assert(false); 4930 break; 4931 } 4932 return ERROR_CODE_SUCCESS; 4933 } 4934 4935 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4936 switch (power_mode){ 4937 case HCI_POWER_ON: 4938 // do nothing 4939 break; 4940 case HCI_POWER_OFF: 4941 // no connections yet, just turn it off 4942 hci_power_control_off(); 4943 break; 4944 case HCI_POWER_SLEEP: 4945 // no connections yet, just turn it off 4946 hci_power_control_sleep(); 4947 break; 4948 default: 4949 btstack_assert(false); 4950 break; 4951 } 4952 return ERROR_CODE_SUCCESS; 4953 } 4954 4955 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4956 switch (power_mode){ 4957 case HCI_POWER_ON: 4958 // do nothing 4959 break; 4960 case HCI_POWER_OFF: 4961 hci_power_enter_halting_state(); 4962 break; 4963 case HCI_POWER_SLEEP: 4964 // see hci_run 4965 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4966 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4967 break; 4968 default: 4969 btstack_assert(false); 4970 break; 4971 } 4972 return ERROR_CODE_SUCCESS; 4973 } 4974 4975 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4976 switch (power_mode){ 4977 case HCI_POWER_ON: 4978 hci_power_enter_initializing_state(); 4979 break; 4980 case HCI_POWER_OFF: 4981 // do nothing 4982 break; 4983 case HCI_POWER_SLEEP: 4984 // see hci_run 4985 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4986 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4987 break; 4988 default: 4989 btstack_assert(false); 4990 break; 4991 } 4992 return ERROR_CODE_SUCCESS; 4993 } 4994 4995 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4996 switch (power_mode){ 4997 case HCI_POWER_ON: 4998 hci_power_enter_initializing_state(); 4999 break; 5000 case HCI_POWER_OFF: 5001 hci_power_enter_halting_state(); 5002 break; 5003 case HCI_POWER_SLEEP: 5004 // do nothing 5005 break; 5006 default: 5007 btstack_assert(false); 5008 break; 5009 } 5010 return ERROR_CODE_SUCCESS; 5011 } 5012 5013 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5014 int err; 5015 switch (power_mode){ 5016 case HCI_POWER_ON: 5017 err = hci_power_control_wake(); 5018 if (err) return err; 5019 hci_power_enter_initializing_state(); 5020 break; 5021 case HCI_POWER_OFF: 5022 hci_power_enter_halting_state(); 5023 break; 5024 case HCI_POWER_SLEEP: 5025 // do nothing 5026 break; 5027 default: 5028 btstack_assert(false); 5029 break; 5030 } 5031 return ERROR_CODE_SUCCESS; 5032 } 5033 5034 int hci_power_control(HCI_POWER_MODE power_mode){ 5035 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5036 btstack_run_loop_remove_timer(&hci_stack->timeout); 5037 int err = 0; 5038 switch (hci_stack->state){ 5039 case HCI_STATE_OFF: 5040 err = hci_power_control_state_off(power_mode); 5041 break; 5042 case HCI_STATE_INITIALIZING: 5043 err = hci_power_control_state_initializing(power_mode); 5044 break; 5045 case HCI_STATE_WORKING: 5046 err = hci_power_control_state_working(power_mode); 5047 break; 5048 case HCI_STATE_HALTING: 5049 err = hci_power_control_state_halting(power_mode); 5050 break; 5051 case HCI_STATE_FALLING_ASLEEP: 5052 err = hci_power_control_state_falling_asleep(power_mode); 5053 break; 5054 case HCI_STATE_SLEEPING: 5055 err = hci_power_control_state_sleeping(power_mode); 5056 break; 5057 default: 5058 btstack_assert(false); 5059 break; 5060 } 5061 if (err != 0){ 5062 return err; 5063 } 5064 5065 // create internal event 5066 hci_emit_state(); 5067 5068 // trigger next/first action 5069 hci_run(); 5070 5071 return 0; 5072 } 5073 5074 5075 static void hci_halting_run(void) { 5076 5077 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5078 5079 hci_connection_t *connection; 5080 #ifdef ENABLE_BLE 5081 #ifdef ENABLE_LE_PERIPHERAL 5082 bool stop_advertismenets; 5083 #endif 5084 #endif 5085 5086 switch (hci_stack->substate) { 5087 case HCI_HALTING_CLASSIC_STOP: 5088 #ifdef ENABLE_CLASSIC 5089 if (!hci_can_send_command_packet_now()) return; 5090 5091 if (hci_stack->connectable || hci_stack->discoverable){ 5092 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5093 hci_send_cmd(&hci_write_scan_enable, 0); 5094 return; 5095 } 5096 #endif 5097 /* fall through */ 5098 5099 case HCI_HALTING_LE_ADV_STOP: 5100 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5101 5102 #ifdef ENABLE_BLE 5103 #ifdef ENABLE_LE_PERIPHERAL 5104 if (!hci_can_send_command_packet_now()) return; 5105 5106 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5107 5108 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5109 if (hci_extended_advertising_supported()){ 5110 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5111 btstack_linked_list_iterator_t it; 5112 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5113 // stop all periodic advertisements and check if an extended set is active 5114 while (btstack_linked_list_iterator_has_next(&it)){ 5115 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5116 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5117 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5118 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5119 return; 5120 } 5121 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5122 stop_advertismenets = true; 5123 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5124 } 5125 } 5126 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5127 if (stop_advertismenets){ 5128 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5129 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5130 return; 5131 } 5132 } 5133 else 5134 #else /* ENABLE_LE_PERIPHERAL */ 5135 { 5136 if (stop_advertismenets) { 5137 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5138 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5139 return; 5140 } 5141 } 5142 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5143 #endif /* ENABLE_LE_PERIPHERAL */ 5144 #endif /* ENABLE_BLE */ 5145 5146 /* fall through */ 5147 5148 case HCI_HALTING_LE_SCAN_STOP: 5149 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5150 if (!hci_can_send_command_packet_now()) return; 5151 5152 #ifdef ENABLE_BLE 5153 #ifdef ENABLE_LE_CENTRAL 5154 if (hci_stack->le_scanning_active){ 5155 hci_le_scan_stop(); 5156 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5157 return; 5158 } 5159 #endif 5160 #endif 5161 5162 /* fall through */ 5163 5164 case HCI_HALTING_DISCONNECT_ALL: 5165 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5166 if (!hci_can_send_command_packet_now()) return; 5167 5168 // close all open connections 5169 connection = (hci_connection_t *) hci_stack->connections; 5170 if (connection) { 5171 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5172 5173 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5174 5175 // check state 5176 switch(connection->state) { 5177 case SENT_DISCONNECT: 5178 case RECEIVED_DISCONNECTION_COMPLETE: 5179 // wait until connection is gone 5180 return; 5181 default: 5182 break; 5183 } 5184 5185 // finally, send the disconnect command 5186 connection->state = SENT_DISCONNECT; 5187 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5188 return; 5189 } 5190 5191 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5192 // stop BIGs and BIG Syncs 5193 if (hci_stack->le_audio_bigs != NULL){ 5194 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5195 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5196 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5197 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5198 return; 5199 } 5200 if (hci_stack->le_audio_big_syncs != NULL){ 5201 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5202 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5203 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5204 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5205 return; 5206 } 5207 #endif 5208 5209 btstack_run_loop_remove_timer(&hci_stack->timeout); 5210 5211 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5212 log_info("HCI_STATE_HALTING: wait 50 ms"); 5213 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5214 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5215 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5216 btstack_run_loop_add_timer(&hci_stack->timeout); 5217 break; 5218 5219 case HCI_HALTING_CLOSE: 5220 // close left over connections (that had not been properly closed before) 5221 hci_discard_connections(); 5222 5223 log_info("HCI_STATE_HALTING, calling off"); 5224 5225 // switch mode 5226 hci_power_control_off(); 5227 5228 log_info("HCI_STATE_HALTING, emitting state"); 5229 hci_emit_state(); 5230 log_info("HCI_STATE_HALTING, done"); 5231 break; 5232 5233 case HCI_HALTING_W4_CLOSE_TIMER: 5234 // keep waiting 5235 5236 break; 5237 default: 5238 break; 5239 } 5240 }; 5241 5242 static void hci_falling_asleep_run(void){ 5243 hci_connection_t * connection; 5244 switch(hci_stack->substate) { 5245 case HCI_FALLING_ASLEEP_DISCONNECT: 5246 log_info("HCI_STATE_FALLING_ASLEEP"); 5247 // close all open connections 5248 connection = (hci_connection_t *) hci_stack->connections; 5249 if (connection){ 5250 5251 // send disconnect 5252 if (!hci_can_send_command_packet_now()) return; 5253 5254 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5255 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5256 5257 // send disconnected event right away - causes higher layer connections to get closed, too. 5258 hci_shutdown_connection(connection); 5259 return; 5260 } 5261 5262 if (hci_classic_supported()){ 5263 // disable page and inquiry scan 5264 if (!hci_can_send_command_packet_now()) return; 5265 5266 log_info("HCI_STATE_HALTING, disabling inq scans"); 5267 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5268 5269 // continue in next sub state 5270 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5271 break; 5272 } 5273 5274 /* fall through */ 5275 5276 case HCI_FALLING_ASLEEP_COMPLETE: 5277 log_info("HCI_STATE_HALTING, calling sleep"); 5278 // switch mode 5279 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5280 hci_emit_state(); 5281 break; 5282 5283 default: 5284 break; 5285 } 5286 } 5287 5288 #ifdef ENABLE_CLASSIC 5289 5290 static void hci_update_scan_enable(void){ 5291 // 2 = page scan, 1 = inq scan 5292 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5293 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5294 hci_run(); 5295 } 5296 5297 void gap_discoverable_control(uint8_t enable){ 5298 if (enable) enable = 1; // normalize argument 5299 5300 if (hci_stack->discoverable == enable){ 5301 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5302 return; 5303 } 5304 5305 hci_stack->discoverable = enable; 5306 hci_update_scan_enable(); 5307 } 5308 5309 void gap_connectable_control(uint8_t enable){ 5310 if (enable) enable = 1; // normalize argument 5311 5312 // don't emit event 5313 if (hci_stack->connectable == enable) return; 5314 5315 hci_stack->connectable = enable; 5316 hci_update_scan_enable(); 5317 } 5318 #endif 5319 5320 void gap_local_bd_addr(bd_addr_t address_buffer){ 5321 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5322 } 5323 5324 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5325 static void hci_host_num_completed_packets(void){ 5326 5327 // create packet manually as arrays are not supported and num_commands should not get reduced 5328 hci_reserve_packet_buffer(); 5329 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5330 5331 uint16_t size = 0; 5332 uint16_t num_handles = 0; 5333 packet[size++] = 0x35; 5334 packet[size++] = 0x0c; 5335 size++; // skip param len 5336 size++; // skip num handles 5337 5338 // add { handle, packets } entries 5339 btstack_linked_item_t * it; 5340 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5341 hci_connection_t * connection = (hci_connection_t *) it; 5342 if (connection->num_packets_completed){ 5343 little_endian_store_16(packet, size, connection->con_handle); 5344 size += 2; 5345 little_endian_store_16(packet, size, connection->num_packets_completed); 5346 size += 2; 5347 // 5348 num_handles++; 5349 connection->num_packets_completed = 0; 5350 } 5351 } 5352 5353 packet[2] = size - 3; 5354 packet[3] = num_handles; 5355 5356 hci_stack->host_completed_packets = 0; 5357 5358 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5359 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5360 5361 // release packet buffer for synchronous transport implementations 5362 if (hci_transport_synchronous()){ 5363 hci_release_packet_buffer(); 5364 hci_emit_transport_packet_sent(); 5365 } 5366 } 5367 #endif 5368 5369 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5370 UNUSED(ds); 5371 hci_stack->substate = HCI_HALTING_CLOSE; 5372 hci_halting_run(); 5373 } 5374 5375 static bool hci_run_acl_fragments(void){ 5376 if (hci_stack->acl_fragmentation_total_size > 0u) { 5377 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5378 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5379 if (connection) { 5380 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5381 hci_send_acl_packet_fragments(connection); 5382 return true; 5383 } 5384 } else { 5385 // connection gone -> discard further fragments 5386 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5387 hci_stack->acl_fragmentation_total_size = 0; 5388 hci_stack->acl_fragmentation_pos = 0; 5389 } 5390 } 5391 return false; 5392 } 5393 5394 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5395 static bool hci_run_iso_fragments(void){ 5396 if (hci_stack->iso_fragmentation_total_size > 0u) { 5397 // TODO: flow control 5398 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5399 hci_send_iso_packet_fragments(); 5400 return true; 5401 } 5402 } 5403 return false; 5404 } 5405 #endif 5406 5407 #ifdef ENABLE_CLASSIC 5408 5409 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5410 static bool hci_classic_operation_active(void) { 5411 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5412 return true; 5413 } 5414 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5415 return true; 5416 } 5417 btstack_linked_item_t * it; 5418 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5419 hci_connection_t *connection = (hci_connection_t *) it; 5420 switch (connection->state) { 5421 case SENT_CREATE_CONNECTION: 5422 case SENT_CANCEL_CONNECTION: 5423 case SENT_DISCONNECT: 5424 return true; 5425 default: 5426 break; 5427 } 5428 } 5429 return false; 5430 } 5431 #endif 5432 5433 static bool hci_run_general_gap_classic(void){ 5434 5435 // assert stack is working and classic is active 5436 if (hci_classic_supported() == false) return false; 5437 if (hci_stack->state != HCI_STATE_WORKING) return false; 5438 5439 // decline incoming connections 5440 if (hci_stack->decline_reason){ 5441 uint8_t reason = hci_stack->decline_reason; 5442 hci_stack->decline_reason = 0; 5443 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5444 return true; 5445 } 5446 5447 if (hci_stack->gap_tasks_classic != 0){ 5448 hci_run_gap_tasks_classic(); 5449 return true; 5450 } 5451 5452 // start/stop inquiry 5453 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5454 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5455 if (hci_classic_operation_active() == false) 5456 #endif 5457 { 5458 uint8_t duration = hci_stack->inquiry_state; 5459 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5460 if (hci_stack->inquiry_max_period_length != 0){ 5461 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); 5462 } else { 5463 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5464 } 5465 return true; 5466 } 5467 } 5468 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5469 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5470 hci_send_cmd(&hci_inquiry_cancel); 5471 return true; 5472 } 5473 5474 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5475 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5476 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5477 return true; 5478 } 5479 5480 // remote name request 5481 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5482 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5483 if (hci_classic_operation_active() == false) 5484 #endif 5485 { 5486 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5487 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5488 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5489 return true; 5490 } 5491 } 5492 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5493 // Local OOB data 5494 if (hci_stack->classic_read_local_oob_data){ 5495 hci_stack->classic_read_local_oob_data = false; 5496 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5497 hci_send_cmd(&hci_read_local_extended_oob_data); 5498 } else { 5499 hci_send_cmd(&hci_read_local_oob_data); 5500 } 5501 } 5502 #endif 5503 // pairing 5504 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5505 uint8_t state = hci_stack->gap_pairing_state; 5506 uint8_t pin_code[16]; 5507 switch (state){ 5508 case GAP_PAIRING_STATE_SEND_PIN: 5509 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5510 memset(pin_code, 0, 16); 5511 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5512 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5513 break; 5514 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5515 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5516 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5517 break; 5518 case GAP_PAIRING_STATE_SEND_PASSKEY: 5519 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5520 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5521 break; 5522 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5523 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5524 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5525 break; 5526 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5527 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5528 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5529 break; 5530 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5531 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5532 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5533 break; 5534 default: 5535 break; 5536 } 5537 return true; 5538 } 5539 return false; 5540 } 5541 #endif 5542 5543 #ifdef ENABLE_BLE 5544 5545 #ifdef ENABLE_LE_CENTRAL 5546 static void hci_le_scan_stop(void){ 5547 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5548 if (hci_extended_advertising_supported()) { 5549 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5550 } else 5551 #endif 5552 { 5553 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5554 } 5555 } 5556 #endif 5557 5558 #ifdef ENABLE_LE_PERIPHERAL 5559 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5560 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5561 uint8_t operation = 0; 5562 if (pos == 0){ 5563 // first fragment or complete data 5564 operation |= 1; 5565 } 5566 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5567 // last fragment or complete data 5568 operation |= 2; 5569 } 5570 return operation; 5571 } 5572 #endif 5573 #endif 5574 5575 static bool hci_run_general_gap_le(void){ 5576 5577 btstack_linked_list_iterator_t lit; 5578 5579 // Phase 1: collect what to stop 5580 5581 #ifdef ENABLE_LE_CENTRAL 5582 bool scanning_stop = false; 5583 bool connecting_stop = false; 5584 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5585 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5586 bool periodic_sync_stop = false; 5587 #endif 5588 #endif 5589 #endif 5590 5591 #ifdef ENABLE_LE_PERIPHERAL 5592 bool advertising_stop = false; 5593 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5594 le_advertising_set_t * advertising_stop_set = NULL; 5595 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5596 bool periodic_advertising_stop = false; 5597 #endif 5598 #endif 5599 #endif 5600 5601 // check if own address changes 5602 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5603 5604 // check if whitelist needs modification 5605 bool whitelist_modification_pending = false; 5606 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5607 while (btstack_linked_list_iterator_has_next(&lit)){ 5608 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5609 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5610 whitelist_modification_pending = true; 5611 break; 5612 } 5613 } 5614 5615 // check if resolving list needs modification 5616 bool resolving_list_modification_pending = false; 5617 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5618 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5619 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5620 resolving_list_modification_pending = true; 5621 } 5622 #endif 5623 5624 #ifdef ENABLE_LE_CENTRAL 5625 5626 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5627 // check if periodic advertiser list needs modification 5628 bool periodic_list_modification_pending = false; 5629 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5630 while (btstack_linked_list_iterator_has_next(&lit)){ 5631 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5632 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5633 periodic_list_modification_pending = true; 5634 break; 5635 } 5636 } 5637 #endif 5638 5639 // scanning control 5640 if (hci_stack->le_scanning_active) { 5641 // stop if: 5642 // - parameter change required 5643 // - it's disabled 5644 // - whitelist change required but used for scanning 5645 // - resolving list modified 5646 // - own address changes 5647 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5648 if ((hci_stack->le_scanning_param_update) || 5649 !hci_stack->le_scanning_enabled || 5650 (scanning_uses_whitelist && whitelist_modification_pending) || 5651 resolving_list_modification_pending || 5652 random_address_change){ 5653 5654 scanning_stop = true; 5655 } 5656 } 5657 5658 // connecting control 5659 bool connecting_with_whitelist; 5660 switch (hci_stack->le_connecting_state){ 5661 case LE_CONNECTING_DIRECT: 5662 case LE_CONNECTING_WHITELIST: 5663 // stop connecting if: 5664 // - connecting uses white and whitelist modification pending 5665 // - if it got disabled 5666 // - resolving list modified 5667 // - own address changes 5668 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5669 if ((connecting_with_whitelist && whitelist_modification_pending) || 5670 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5671 resolving_list_modification_pending || 5672 random_address_change) { 5673 5674 connecting_stop = true; 5675 } 5676 break; 5677 default: 5678 break; 5679 } 5680 5681 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5682 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5683 // periodic sync control 5684 bool sync_with_advertiser_list; 5685 switch(hci_stack->le_periodic_sync_state){ 5686 case LE_CONNECTING_DIRECT: 5687 case LE_CONNECTING_WHITELIST: 5688 // stop sync if: 5689 // - sync with advertiser list and advertiser list modification pending 5690 // - if it got disabled 5691 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5692 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5693 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5694 periodic_sync_stop = true; 5695 } 5696 break; 5697 default: 5698 break; 5699 } 5700 #endif 5701 #endif 5702 5703 #endif /* ENABLE_LE_CENTRAL */ 5704 5705 #ifdef ENABLE_LE_PERIPHERAL 5706 // le advertisement control 5707 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5708 // stop if: 5709 // - parameter change required 5710 // - random address used in advertising and changes 5711 // - it's disabled 5712 // - whitelist change required but used for advertisement filter policy 5713 // - resolving list modified 5714 // - own address changes 5715 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5716 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5717 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5718 if (advertising_change || 5719 (advertising_uses_random_address && random_address_change) || 5720 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5721 (advertising_uses_whitelist && whitelist_modification_pending) || 5722 resolving_list_modification_pending || 5723 random_address_change) { 5724 5725 advertising_stop = true; 5726 } 5727 } 5728 5729 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5730 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5731 btstack_linked_list_iterator_t it; 5732 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5733 while (btstack_linked_list_iterator_has_next(&it)){ 5734 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5735 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5736 // stop if: 5737 // - parameter change required 5738 // - random address used in connectable advertising and changes 5739 // - it's disabled 5740 // - whitelist change required but used for advertisement filter policy 5741 // - resolving list modified 5742 // - own address changes 5743 // - advertisement set will be removed 5744 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5745 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5746 bool advertising_uses_random_address = 5747 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5748 advertising_connectable; 5749 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5750 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5751 bool advertising_set_random_address_change = 5752 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5753 bool advertising_set_will_be_removed = 5754 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5755 if (advertising_parameter_change || 5756 (advertising_uses_random_address && advertising_set_random_address_change) || 5757 (advertising_enabled == false) || 5758 (advertising_uses_whitelist && whitelist_modification_pending) || 5759 resolving_list_modification_pending || 5760 advertising_set_will_be_removed) { 5761 5762 advertising_stop = true; 5763 advertising_stop_set = advertising_set; 5764 break; 5765 } 5766 } 5767 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5768 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5769 // stop if: 5770 // - it's disabled 5771 // - parameter change required 5772 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5773 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5774 if ((periodic_enabled == false) || periodic_parameter_change){ 5775 periodic_advertising_stop = true; 5776 advertising_stop_set = advertising_set; 5777 } 5778 } 5779 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5780 } 5781 } 5782 #endif 5783 5784 #endif 5785 5786 5787 // Phase 2: stop everything that should be off during modifications 5788 5789 5790 // 2.1 Outgoing connection 5791 #ifdef ENABLE_LE_CENTRAL 5792 if (connecting_stop){ 5793 hci_send_cmd(&hci_le_create_connection_cancel); 5794 return true; 5795 } 5796 #endif 5797 5798 // 2.2 Scanning 5799 #ifdef ENABLE_LE_CENTRAL 5800 if (scanning_stop){ 5801 hci_stack->le_scanning_active = false; 5802 hci_le_scan_stop(); 5803 return true; 5804 } 5805 5806 // 2.3 Periodic Sync 5807 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5808 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5809 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5810 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5811 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5812 return true; 5813 } 5814 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5815 if (periodic_sync_stop){ 5816 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5817 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5818 return true; 5819 } 5820 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5821 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5822 #endif /* ENABLE_LE_CENTRAL */ 5823 5824 // 2.4 Advertising: legacy, extended, periodic 5825 #ifdef ENABLE_LE_PERIPHERAL 5826 if (advertising_stop){ 5827 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5828 if (hci_extended_advertising_supported()) { 5829 uint8_t advertising_stop_handle; 5830 if (advertising_stop_set != NULL){ 5831 advertising_stop_handle = advertising_stop_set->advertising_handle; 5832 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5833 } else { 5834 advertising_stop_handle = 0; 5835 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5836 } 5837 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5838 const uint16_t durations[] = { 0 }; 5839 const uint16_t max_events[] = { 0 }; 5840 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5841 } else 5842 #endif 5843 { 5844 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5845 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5846 } 5847 return true; 5848 } 5849 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5850 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5851 if (periodic_advertising_stop){ 5852 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5853 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5854 return true; 5855 } 5856 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5857 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5858 #endif /* ENABLE_LE_PERIPHERAL */ 5859 5860 5861 // Phase 3: modify 5862 5863 if (random_address_change){ 5864 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5865 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5866 if (hci_extended_advertising_supported()) { 5867 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5868 } 5869 #endif 5870 { 5871 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5872 } 5873 return true; 5874 } 5875 5876 #ifdef ENABLE_LE_CENTRAL 5877 if (hci_stack->le_scanning_param_update){ 5878 hci_stack->le_scanning_param_update = false; 5879 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5880 if (hci_extended_advertising_supported()){ 5881 // prepare arrays for all PHYs 5882 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5883 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5884 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5885 uint8_t scanning_phys = 1; // LE 1M PHY 5886 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5887 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5888 } else 5889 #endif 5890 { 5891 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5892 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5893 } 5894 return true; 5895 } 5896 #endif 5897 5898 #ifdef ENABLE_LE_PERIPHERAL 5899 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5900 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5901 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5902 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5903 if (hci_extended_advertising_supported()){ 5904 // map advertisment type to advertising event properties 5905 uint16_t adv_event_properties = 0; 5906 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5907 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5908 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5909 } 5910 hci_stack->le_advertising_set_in_current_command = 0; 5911 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5912 0, 5913 adv_event_properties, 5914 hci_stack->le_advertisements_interval_min, 5915 hci_stack->le_advertisements_interval_max, 5916 hci_stack->le_advertisements_channel_map, 5917 hci_stack->le_advertisements_own_addr_type, 5918 hci_stack->le_advertisements_direct_address_type, 5919 hci_stack->le_advertisements_direct_address, 5920 hci_stack->le_advertisements_filter_policy, 5921 0x7f, // tx power: no preference 5922 0x01, // primary adv phy: LE 1M 5923 0, // secondary adv max skip 5924 0, // secondary adv phy 5925 0, // adv sid 5926 0 // scan request notification 5927 ); 5928 } 5929 #endif 5930 { 5931 hci_send_cmd(&hci_le_set_advertising_parameters, 5932 hci_stack->le_advertisements_interval_min, 5933 hci_stack->le_advertisements_interval_max, 5934 hci_stack->le_advertisements_type, 5935 hci_stack->le_advertisements_own_addr_type, 5936 hci_stack->le_advertisements_direct_address_type, 5937 hci_stack->le_advertisements_direct_address, 5938 hci_stack->le_advertisements_channel_map, 5939 hci_stack->le_advertisements_filter_policy); 5940 } 5941 return true; 5942 } 5943 5944 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5945 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5946 uint8_t adv_data_clean[31]; 5947 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5948 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5949 hci_stack->le_advertisements_data_len); 5950 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5951 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5952 if (hci_extended_advertising_supported()){ 5953 hci_stack->le_advertising_set_in_current_command = 0; 5954 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5955 } else 5956 #endif 5957 { 5958 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5959 } 5960 return true; 5961 } 5962 5963 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5964 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5965 uint8_t scan_data_clean[31]; 5966 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5967 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5968 hci_stack->le_scan_response_data_len); 5969 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5970 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5971 if (hci_extended_advertising_supported()){ 5972 hci_stack->le_advertising_set_in_current_command = 0; 5973 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5974 } else 5975 #endif 5976 { 5977 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5978 } 5979 return true; 5980 } 5981 5982 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5983 if (hci_extended_advertising_supported()) { 5984 btstack_linked_list_iterator_t it; 5985 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5986 while (btstack_linked_list_iterator_has_next(&it)){ 5987 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5988 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5989 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5990 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5991 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5992 return true; 5993 } 5994 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5995 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5996 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5997 return true; 5998 } 5999 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6000 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6001 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6002 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6003 advertising_set->advertising_handle, 6004 advertising_set->extended_params.advertising_event_properties, 6005 advertising_set->extended_params.primary_advertising_interval_min, 6006 advertising_set->extended_params.primary_advertising_interval_max, 6007 advertising_set->extended_params.primary_advertising_channel_map, 6008 advertising_set->extended_params.own_address_type, 6009 advertising_set->extended_params.peer_address_type, 6010 advertising_set->extended_params.peer_address, 6011 advertising_set->extended_params.advertising_filter_policy, 6012 advertising_set->extended_params.advertising_tx_power, 6013 advertising_set->extended_params.primary_advertising_phy, 6014 advertising_set->extended_params.secondary_advertising_max_skip, 6015 advertising_set->extended_params.secondary_advertising_phy, 6016 advertising_set->extended_params.advertising_sid, 6017 advertising_set->extended_params.scan_request_notification_enable 6018 ); 6019 return true; 6020 } 6021 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6022 uint16_t pos = advertising_set->adv_data_pos; 6023 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6024 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6025 if ((operation & 0x02) != 0){ 6026 // last fragment or complete data 6027 operation |= 2; 6028 advertising_set->adv_data_pos = 0; 6029 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6030 } else { 6031 advertising_set->adv_data_pos += data_to_upload; 6032 } 6033 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6034 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6035 return true; 6036 } 6037 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6038 uint16_t pos = advertising_set->scan_data_pos; 6039 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6040 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6041 if ((operation & 0x02) != 0){ 6042 advertising_set->scan_data_pos = 0; 6043 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6044 } else { 6045 advertising_set->scan_data_pos += data_to_upload; 6046 } 6047 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6048 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6049 return true; 6050 } 6051 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6052 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6053 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6054 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6055 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6056 advertising_set->advertising_handle, 6057 advertising_set->periodic_params.periodic_advertising_interval_min, 6058 advertising_set->periodic_params.periodic_advertising_interval_max, 6059 advertising_set->periodic_params.periodic_advertising_properties); 6060 return true; 6061 } 6062 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6063 uint16_t pos = advertising_set->periodic_data_pos; 6064 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6065 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6066 if ((operation & 0x02) != 0){ 6067 // last fragment or complete data 6068 operation |= 2; 6069 advertising_set->periodic_data_pos = 0; 6070 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6071 } else { 6072 advertising_set->periodic_data_pos += data_to_upload; 6073 } 6074 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6075 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6076 return true; 6077 } 6078 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6079 } 6080 } 6081 #endif 6082 6083 #endif 6084 6085 #ifdef ENABLE_LE_CENTRAL 6086 // if connect with whitelist was active and is not cancelled yet, wait until next time 6087 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6088 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6089 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6090 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6091 #endif 6092 #endif 6093 6094 // LE Whitelist Management 6095 if (whitelist_modification_pending){ 6096 // add/remove entries 6097 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6098 while (btstack_linked_list_iterator_has_next(&lit)){ 6099 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6100 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6101 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6102 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6103 return true; 6104 } 6105 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6106 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6107 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6108 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6109 return true; 6110 } 6111 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6112 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6113 btstack_memory_whitelist_entry_free(entry); 6114 } 6115 } 6116 } 6117 6118 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6119 // LE Resolving List Management 6120 if (resolving_list_supported) { 6121 uint16_t i; 6122 switch (hci_stack->le_resolving_list_state) { 6123 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6124 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6125 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6126 return true; 6127 case LE_RESOLVING_LIST_READ_SIZE: 6128 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6129 hci_send_cmd(&hci_le_read_resolving_list_size); 6130 return true; 6131 case LE_RESOLVING_LIST_SEND_CLEAR: 6132 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6133 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6134 sizeof(hci_stack->le_resolving_list_add_entries)); 6135 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6136 sizeof(hci_stack->le_resolving_list_remove_entries)); 6137 hci_send_cmd(&hci_le_clear_resolving_list); 6138 return true; 6139 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6140 // first remove old entries 6141 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6142 uint8_t offset = i >> 3; 6143 uint8_t mask = 1 << (i & 7); 6144 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6145 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6146 bd_addr_t peer_identity_addreses; 6147 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6148 sm_key_t peer_irk; 6149 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6150 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6151 6152 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6153 // trigger whitelist entry 'update' (work around for controller bug) 6154 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6155 while (btstack_linked_list_iterator_has_next(&lit)) { 6156 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6157 if (entry->address_type != peer_identity_addr_type) continue; 6158 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6159 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6160 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6161 } 6162 #endif 6163 6164 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6165 peer_identity_addreses); 6166 return true; 6167 } 6168 6169 // then add new entries 6170 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6171 uint8_t offset = i >> 3; 6172 uint8_t mask = 1 << (i & 7); 6173 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6174 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6175 bd_addr_t peer_identity_addreses; 6176 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6177 sm_key_t peer_irk; 6178 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6179 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6180 if (btstack_is_null(peer_irk, 16)) continue; 6181 const uint8_t *local_irk = gap_get_persistent_irk(); 6182 // command uses format specifier 'P' that stores 16-byte value without flip 6183 uint8_t local_irk_flipped[16]; 6184 uint8_t peer_irk_flipped[16]; 6185 reverse_128(local_irk, local_irk_flipped); 6186 reverse_128(peer_irk, peer_irk_flipped); 6187 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6188 peer_irk_flipped, local_irk_flipped); 6189 return true; 6190 } 6191 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6192 break; 6193 6194 default: 6195 break; 6196 } 6197 } 6198 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6199 #endif 6200 6201 #ifdef ENABLE_LE_CENTRAL 6202 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6203 // LE Whitelist Management 6204 if (periodic_list_modification_pending){ 6205 // add/remove entries 6206 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6207 while (btstack_linked_list_iterator_has_next(&lit)){ 6208 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6209 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6210 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6211 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6212 return true; 6213 } 6214 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6215 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6216 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6217 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6218 return true; 6219 } 6220 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6221 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6222 btstack_memory_periodic_advertiser_list_entry_free(entry); 6223 } 6224 } 6225 } 6226 #endif 6227 #endif 6228 6229 #ifdef ENABLE_LE_CENTRAL 6230 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6231 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6232 if (hci_stack->le_past_set_default_params){ 6233 hci_stack->le_past_set_default_params = false; 6234 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6235 hci_stack->le_past_mode, 6236 hci_stack->le_past_skip, 6237 hci_stack->le_past_sync_timeout, 6238 hci_stack->le_past_cte_type); 6239 return true; 6240 } 6241 #endif 6242 #endif 6243 #endif 6244 6245 // post-pone all actions until stack is fully working 6246 if (hci_stack->state != HCI_STATE_WORKING) return false; 6247 6248 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6249 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6250 6251 // Phase 4: restore state 6252 6253 #ifdef ENABLE_LE_CENTRAL 6254 // re-start scanning 6255 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6256 hci_stack->le_scanning_active = true; 6257 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6258 if (hci_extended_advertising_supported()){ 6259 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6260 } else 6261 #endif 6262 { 6263 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6264 } 6265 return true; 6266 } 6267 #endif 6268 6269 #ifdef ENABLE_LE_CENTRAL 6270 // re-start connecting 6271 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6272 bd_addr_t null_addr; 6273 memset(null_addr, 0, 6); 6274 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6275 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6276 hci_send_cmd(&hci_le_create_connection, 6277 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 6278 hci_stack->le_connection_scan_window, // scan interval: 30 ms 6279 1, // use whitelist 6280 0, // peer address type 6281 null_addr, // peer bd addr 6282 hci_stack->le_connection_own_addr_type, // our addr type: 6283 hci_stack->le_connection_interval_min, // conn interval min 6284 hci_stack->le_connection_interval_max, // conn interval max 6285 hci_stack->le_connection_latency, // conn latency 6286 hci_stack->le_supervision_timeout, // conn latency 6287 hci_stack->le_minimum_ce_length, // min ce length 6288 hci_stack->le_maximum_ce_length // max ce length 6289 ); 6290 return true; 6291 } 6292 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6293 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6294 switch(hci_stack->le_periodic_sync_request){ 6295 case LE_CONNECTING_DIRECT: 6296 case LE_CONNECTING_WHITELIST: 6297 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6298 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6299 hci_stack->le_periodic_sync_options, 6300 hci_stack->le_periodic_sync_advertising_sid, 6301 hci_stack->le_periodic_sync_advertiser_address_type, 6302 hci_stack->le_periodic_sync_advertiser_address, 6303 hci_stack->le_periodic_sync_skip, 6304 hci_stack->le_periodic_sync_timeout, 6305 hci_stack->le_periodic_sync_cte_type); 6306 return true; 6307 default: 6308 break; 6309 } 6310 } 6311 #endif 6312 #endif 6313 6314 #ifdef ENABLE_LE_PERIPHERAL 6315 // re-start advertising 6316 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6317 // check if advertisements should be enabled given 6318 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6319 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6320 6321 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6322 if (hci_extended_advertising_supported()){ 6323 const uint8_t advertising_handles[] = { 0 }; 6324 const uint16_t durations[] = { 0 }; 6325 const uint16_t max_events[] = { 0 }; 6326 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6327 } else 6328 #endif 6329 { 6330 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6331 } 6332 return true; 6333 } 6334 6335 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6336 if (hci_extended_advertising_supported()) { 6337 btstack_linked_list_iterator_t it; 6338 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6339 while (btstack_linked_list_iterator_has_next(&it)) { 6340 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6341 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6342 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6343 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6344 const uint16_t durations[] = { advertising_set->enable_timeout }; 6345 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6346 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6347 return true; 6348 } 6349 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6350 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6351 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6352 uint8_t enable = 1; 6353 if (advertising_set->periodic_include_adi){ 6354 enable |= 2; 6355 } 6356 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6357 return true; 6358 } 6359 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6360 } 6361 } 6362 #endif 6363 #endif 6364 6365 return false; 6366 } 6367 6368 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6369 static bool hci_run_iso_tasks(void){ 6370 btstack_linked_list_iterator_t it; 6371 6372 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6373 return false; 6374 } 6375 6376 // BIG 6377 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6378 while (btstack_linked_list_iterator_has_next(&it)){ 6379 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6380 switch (big->state){ 6381 case LE_AUDIO_BIG_STATE_CREATE: 6382 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6383 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6384 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6385 hci_send_cmd(&hci_le_create_big, 6386 big->params->big_handle, 6387 big->params->advertising_handle, 6388 big->params->num_bis, 6389 big->params->sdu_interval_us, 6390 big->params->max_sdu, 6391 big->params->max_transport_latency_ms, 6392 big->params->rtn, 6393 big->params->phy, 6394 big->params->packing, 6395 big->params->framing, 6396 big->params->encryption, 6397 big->params->broadcast_code); 6398 return true; 6399 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6400 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6401 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); 6402 return true; 6403 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6404 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6405 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6406 return true; 6407 case LE_AUDIO_BIG_STATE_TERMINATE: 6408 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6409 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6410 return true; 6411 default: 6412 break; 6413 } 6414 } 6415 6416 // BIG Sync 6417 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6418 while (btstack_linked_list_iterator_has_next(&it)){ 6419 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6420 switch (big_sync->state){ 6421 case LE_AUDIO_BIG_STATE_CREATE: 6422 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6423 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6424 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6425 hci_send_cmd(&hci_le_big_create_sync, 6426 big_sync->params->big_handle, 6427 big_sync->params->sync_handle, 6428 big_sync->params->encryption, 6429 big_sync->params->broadcast_code, 6430 big_sync->params->mse, 6431 big_sync->params->big_sync_timeout_10ms, 6432 big_sync->params->num_bis, 6433 big_sync->params->bis_indices); 6434 return true; 6435 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6436 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6437 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); 6438 return true; 6439 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6440 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6441 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6442 return true; 6443 case LE_AUDIO_BIG_STATE_TERMINATE: 6444 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6445 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6446 return true; 6447 default: 6448 break; 6449 } 6450 } 6451 6452 // CIG 6453 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6454 while (btstack_linked_list_iterator_has_next(&it)) { 6455 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6456 uint8_t i; 6457 // Set CIG Parameters 6458 uint8_t cis_id[MAX_NR_CIS]; 6459 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6460 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6461 uint8_t phy_c_to_p[MAX_NR_CIS]; 6462 uint8_t phy_p_to_c[MAX_NR_CIS]; 6463 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6464 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6465 switch (cig->state) { 6466 case LE_AUDIO_CIG_STATE_CREATE: 6467 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6468 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6469 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6470 le_audio_cig_params_t * params = cig->params; 6471 for (i = 0; i < params->num_cis; i++) { 6472 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6473 cis_id[i] = cis_params->cis_id; 6474 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6475 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6476 phy_c_to_p[i] = cis_params->phy_c_to_p; 6477 phy_p_to_c[i] = cis_params->phy_p_to_c; 6478 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6479 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6480 } 6481 hci_send_cmd(&hci_le_set_cig_parameters, 6482 cig->cig_id, 6483 params->sdu_interval_c_to_p, 6484 params->sdu_interval_p_to_c, 6485 params->worst_case_sca, 6486 params->packing, 6487 params->framing, 6488 params->max_transport_latency_c_to_p, 6489 params->max_transport_latency_p_to_c, 6490 params->num_cis, 6491 cis_id, 6492 max_sdu_c_to_p, 6493 max_sdu_p_to_c, 6494 phy_c_to_p, 6495 phy_p_to_c, 6496 rtn_c_to_p, 6497 rtn_p_to_c 6498 ); 6499 return true; 6500 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6501 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6502 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6503 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6504 for (i=0;i<cig->num_cis;i++){ 6505 cig->cis_setup_active[i] = true; 6506 } 6507 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6508 return true; 6509 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6510 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6511 // find next path to setup 6512 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6513 if (cig->cis_established[cis_index] == false) { 6514 continue; 6515 } 6516 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6517 bool setup = true; 6518 if (cis_direction == 0){ 6519 // 0 - input - host to controller 6520 // we are central => central to peripheral 6521 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6522 } else { 6523 // 1 - output - controller to host 6524 // we are central => peripheral to central 6525 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6526 } 6527 if (setup){ 6528 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6529 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6530 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6531 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6532 return true; 6533 } 6534 cig->state_vars.next_cis++; 6535 } 6536 // emit done 6537 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6538 default: 6539 break; 6540 } 6541 } 6542 6543 // CIS Accept/Reject 6544 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6545 while (btstack_linked_list_iterator_has_next(&it)) { 6546 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6547 hci_con_handle_t con_handle; 6548 switch (iso_stream->state){ 6549 case HCI_ISO_STREAM_W2_ACCEPT: 6550 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6551 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6552 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6553 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->con_handle); 6554 return true; 6555 case HCI_ISO_STREAM_W2_REJECT: 6556 con_handle = iso_stream->con_handle; 6557 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6558 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6559 hci_iso_stream_finalize(iso_stream); 6560 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6561 return true; 6562 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6563 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6564 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6565 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6566 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6567 break; 6568 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6569 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6570 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6571 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6572 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6573 break; 6574 default: 6575 break; 6576 } 6577 } 6578 6579 return false; 6580 } 6581 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6582 #endif 6583 6584 static bool hci_run_general_pending_commands(void){ 6585 btstack_linked_item_t * it; 6586 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6587 hci_connection_t * connection = (hci_connection_t *) it; 6588 6589 switch(connection->state){ 6590 case SEND_CREATE_CONNECTION: 6591 switch(connection->address_type){ 6592 #ifdef ENABLE_CLASSIC 6593 case BD_ADDR_TYPE_ACL: 6594 log_info("sending hci_create_connection"); 6595 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6596 break; 6597 #endif 6598 default: 6599 #ifdef ENABLE_BLE 6600 #ifdef ENABLE_LE_CENTRAL 6601 log_info("sending hci_le_create_connection"); 6602 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6603 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6604 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6605 if (hci_extended_advertising_supported()) { 6606 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6607 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6608 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6609 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6610 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6611 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6612 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6613 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6614 hci_send_cmd(&hci_le_extended_create_connection, 6615 0, // don't use whitelist 6616 hci_stack->le_connection_own_addr_type, // our addr type: 6617 connection->address_type, // peer address type 6618 connection->address, // peer bd addr 6619 1, // initiating PHY - 1M 6620 le_connection_scan_interval, // conn scan interval 6621 le_connection_scan_window, // conn scan windows 6622 le_connection_interval_min, // conn interval min 6623 le_connection_interval_max, // conn interval max 6624 le_connection_latency, // conn latency 6625 le_supervision_timeout, // conn latency 6626 le_minimum_ce_length, // min ce length 6627 le_maximum_ce_length // max ce length 6628 ); } 6629 else 6630 #endif 6631 { 6632 hci_send_cmd(&hci_le_create_connection, 6633 hci_stack->le_connection_scan_interval, // conn scan interval 6634 hci_stack->le_connection_scan_window, // conn scan windows 6635 0, // don't use whitelist 6636 connection->address_type, // peer address type 6637 connection->address, // peer bd addr 6638 hci_stack->le_connection_own_addr_type, // our addr type: 6639 hci_stack->le_connection_interval_min, // conn interval min 6640 hci_stack->le_connection_interval_max, // conn interval max 6641 hci_stack->le_connection_latency, // conn latency 6642 hci_stack->le_supervision_timeout, // conn latency 6643 hci_stack->le_minimum_ce_length, // min ce length 6644 hci_stack->le_maximum_ce_length // max ce length 6645 ); 6646 } 6647 connection->state = SENT_CREATE_CONNECTION; 6648 #endif 6649 #endif 6650 break; 6651 } 6652 return true; 6653 6654 #ifdef ENABLE_CLASSIC 6655 case RECEIVED_CONNECTION_REQUEST: 6656 connection->role = HCI_ROLE_SLAVE; 6657 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6658 log_info("sending hci_accept_connection_request"); 6659 connection->state = ACCEPTED_CONNECTION_REQUEST; 6660 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6661 return true; 6662 } 6663 break; 6664 #endif 6665 case SEND_DISCONNECT: 6666 connection->state = SENT_DISCONNECT; 6667 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6668 return true; 6669 6670 default: 6671 break; 6672 } 6673 6674 // no further commands if connection is about to get shut down 6675 if (connection->state == SENT_DISCONNECT) continue; 6676 6677 #ifdef ENABLE_CLASSIC 6678 6679 // Handling link key request requires remote supported features 6680 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6681 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6682 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6683 6684 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6685 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6686 if (have_link_key && security_level_sufficient){ 6687 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6688 } else { 6689 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6690 } 6691 return true; 6692 } 6693 6694 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6695 log_info("denying to pin request"); 6696 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6697 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6698 return true; 6699 } 6700 6701 // security assessment requires remote features 6702 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6703 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6704 hci_ssp_assess_security_on_io_cap_request(connection); 6705 // 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 6706 } 6707 6708 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6709 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6710 // set authentication requirements: 6711 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6712 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6713 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6714 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6715 authreq |= 1; 6716 } 6717 bool bonding = hci_stack->bondable; 6718 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6719 // if we have received IO Cap Response, we're in responder role 6720 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6721 if (bonding && !remote_bonding){ 6722 log_info("Remote not bonding, dropping local flag"); 6723 bonding = false; 6724 } 6725 } 6726 if (bonding){ 6727 if (connection->bonding_flags & BONDING_DEDICATED){ 6728 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6729 } else { 6730 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6731 } 6732 } 6733 uint8_t have_oob_data = 0; 6734 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6735 if (connection->classic_oob_c_192 != NULL){ 6736 have_oob_data |= 1; 6737 } 6738 if (connection->classic_oob_c_256 != NULL){ 6739 have_oob_data |= 2; 6740 } 6741 #endif 6742 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6743 return true; 6744 } 6745 6746 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6747 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6748 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6749 return true; 6750 } 6751 6752 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6753 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6754 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6755 const uint8_t zero[16] = { 0 }; 6756 const uint8_t * r_192 = zero; 6757 const uint8_t * c_192 = zero; 6758 const uint8_t * r_256 = zero; 6759 const uint8_t * c_256 = zero; 6760 // verify P-256 OOB 6761 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6762 c_256 = connection->classic_oob_c_256; 6763 if (connection->classic_oob_r_256 != NULL) { 6764 r_256 = connection->classic_oob_r_256; 6765 } 6766 } 6767 // verify P-192 OOB 6768 if ((connection->classic_oob_c_192 != NULL)) { 6769 c_192 = connection->classic_oob_c_192; 6770 if (connection->classic_oob_r_192 != NULL) { 6771 r_192 = connection->classic_oob_r_192; 6772 } 6773 } 6774 6775 // assess security 6776 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6777 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6778 if (need_level_4 && !can_reach_level_4){ 6779 log_info("Level 4 required, but not possible -> abort"); 6780 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6781 // send oob negative reply 6782 c_256 = NULL; 6783 c_192 = NULL; 6784 } 6785 6786 // Reply 6787 if (c_256 != zero) { 6788 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6789 } else if (c_192 != zero){ 6790 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6791 } else { 6792 hci_stack->classic_oob_con_handle = connection->con_handle; 6793 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6794 } 6795 return true; 6796 } 6797 #endif 6798 6799 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6800 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6801 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6802 return true; 6803 } 6804 6805 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6806 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6807 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6808 return true; 6809 } 6810 6811 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6812 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6813 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6814 return true; 6815 } 6816 6817 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6818 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6819 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6820 connection->state = SENT_DISCONNECT; 6821 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6822 return true; 6823 } 6824 6825 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6826 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6827 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6828 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6829 return true; 6830 } 6831 6832 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6833 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6834 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6835 return true; 6836 } 6837 6838 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6839 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6840 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6841 return true; 6842 } 6843 6844 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6845 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6846 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6847 return true; 6848 } 6849 6850 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6851 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6852 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6853 return true; 6854 } 6855 6856 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6857 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6858 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6859 return true; 6860 } 6861 #endif 6862 6863 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6864 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6865 #ifdef ENABLE_CLASSIC 6866 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6867 #endif 6868 if (connection->state != SENT_DISCONNECT){ 6869 connection->state = SENT_DISCONNECT; 6870 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6871 return true; 6872 } 6873 } 6874 6875 #ifdef ENABLE_CLASSIC 6876 uint16_t sniff_min_interval; 6877 switch (connection->sniff_min_interval){ 6878 case 0: 6879 break; 6880 case 0xffff: 6881 connection->sniff_min_interval = 0; 6882 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6883 return true; 6884 default: 6885 sniff_min_interval = connection->sniff_min_interval; 6886 connection->sniff_min_interval = 0; 6887 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6888 return true; 6889 } 6890 6891 if (connection->sniff_subrating_max_latency != 0xffff){ 6892 uint16_t max_latency = connection->sniff_subrating_max_latency; 6893 connection->sniff_subrating_max_latency = 0; 6894 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6895 return true; 6896 } 6897 6898 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6899 uint8_t service_type = (uint8_t) connection->qos_service_type; 6900 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6901 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); 6902 return true; 6903 } 6904 6905 if (connection->request_role != HCI_ROLE_INVALID){ 6906 hci_role_t role = connection->request_role; 6907 connection->request_role = HCI_ROLE_INVALID; 6908 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6909 return true; 6910 } 6911 #endif 6912 6913 if (connection->gap_connection_tasks != 0){ 6914 #ifdef ENABLE_CLASSIC 6915 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6916 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6917 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6918 return true; 6919 } 6920 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6921 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6922 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6923 return true; 6924 } 6925 #endif 6926 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6927 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6928 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6929 return true; 6930 } 6931 #ifdef ENABLE_BLE 6932 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 6933 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 6934 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 6935 return true; 6936 } 6937 #endif 6938 } 6939 6940 #ifdef ENABLE_BLE 6941 switch (connection->le_con_parameter_update_state){ 6942 // response to L2CAP CON PARAMETER UPDATE REQUEST 6943 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6944 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6945 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6946 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6947 0x0000, 0xffff); 6948 return true; 6949 case CON_PARAMETER_UPDATE_REPLY: 6950 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6951 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6952 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6953 0x0000, 0xffff); 6954 return true; 6955 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6956 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6957 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6958 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6959 return true; 6960 default: 6961 break; 6962 } 6963 if (connection->le_phy_update_all_phys != 0xffu){ 6964 uint8_t all_phys = connection->le_phy_update_all_phys; 6965 connection->le_phy_update_all_phys = 0xff; 6966 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); 6967 return true; 6968 } 6969 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6970 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 6971 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 6972 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 6973 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 6974 return true; 6975 } 6976 #endif 6977 #endif 6978 } 6979 return false; 6980 } 6981 6982 static void hci_run(void){ 6983 6984 // stack state sub statemachines 6985 switch (hci_stack->state) { 6986 case HCI_STATE_INITIALIZING: 6987 hci_initializing_run(); 6988 break; 6989 case HCI_STATE_HALTING: 6990 hci_halting_run(); 6991 break; 6992 case HCI_STATE_FALLING_ASLEEP: 6993 hci_falling_asleep_run(); 6994 break; 6995 default: 6996 break; 6997 } 6998 6999 // allow to run after initialization to working transition 7000 if (hci_stack->state != HCI_STATE_WORKING){ 7001 return; 7002 } 7003 7004 bool done; 7005 7006 // send continuation fragments first, as they block the prepared packet buffer 7007 done = hci_run_acl_fragments(); 7008 if (done) return; 7009 7010 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7011 done = hci_run_iso_fragments(); 7012 if (done) return; 7013 #endif 7014 7015 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7016 // send host num completed packets next as they don't require num_cmd_packets > 0 7017 if (!hci_can_send_comand_packet_transport()) return; 7018 if (hci_stack->host_completed_packets){ 7019 hci_host_num_completed_packets(); 7020 return; 7021 } 7022 #endif 7023 7024 if (!hci_can_send_command_packet_now()) return; 7025 7026 // global/non-connection oriented commands 7027 7028 7029 #ifdef ENABLE_CLASSIC 7030 // general gap classic 7031 done = hci_run_general_gap_classic(); 7032 if (done) return; 7033 #endif 7034 7035 #ifdef ENABLE_BLE 7036 // general gap le 7037 done = hci_run_general_gap_le(); 7038 if (done) return; 7039 7040 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7041 // ISO related tasks, e.g. BIG create/terminate/sync 7042 done = hci_run_iso_tasks(); 7043 if (done) return; 7044 #endif 7045 #endif 7046 7047 // send pending HCI commands 7048 hci_run_general_pending_commands(); 7049 } 7050 7051 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7052 // house-keeping 7053 7054 #ifdef ENABLE_CLASSIC 7055 bd_addr_t addr; 7056 hci_connection_t * conn; 7057 #endif 7058 #ifdef ENABLE_LE_CENTRAL 7059 uint8_t initiator_filter_policy; 7060 #endif 7061 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7062 uint8_t i; 7063 uint8_t num_cis; 7064 hci_con_handle_t cis_handle; 7065 uint8_t status; 7066 #endif 7067 7068 uint16_t opcode = little_endian_read_16(packet, 0); 7069 switch (opcode) { 7070 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7071 hci_stack->loopback_mode = packet[3]; 7072 break; 7073 7074 #ifdef ENABLE_CLASSIC 7075 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7076 reverse_bd_addr(&packet[3], addr); 7077 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7078 7079 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7080 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7081 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7082 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7083 } 7084 7085 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7086 if (!conn) { 7087 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7088 if (!conn) { 7089 // notify client that alloc failed 7090 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7091 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7092 } 7093 conn->state = SEND_CREATE_CONNECTION; 7094 conn->role = HCI_ROLE_MASTER; 7095 } 7096 7097 log_info("conn state %u", conn->state); 7098 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7099 switch (conn->state) { 7100 // if connection active exists 7101 case OPEN: 7102 // and OPEN, emit connection complete command 7103 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7104 // packet not sent to controller 7105 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7106 case RECEIVED_DISCONNECTION_COMPLETE: 7107 // create connection triggered in disconnect complete event, let's do it now 7108 break; 7109 case SEND_CREATE_CONNECTION: 7110 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7111 if (hci_classic_operation_active()){ 7112 return ERROR_CODE_SUCCESS; 7113 } 7114 #endif 7115 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7116 break; 7117 default: 7118 // otherwise, just ignore as it is already in the open process 7119 // packet not sent to controller 7120 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7121 } 7122 conn->state = SENT_CREATE_CONNECTION; 7123 7124 // track outgoing connection 7125 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7126 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7127 break; 7128 7129 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7130 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7131 // setup_synchronous_connection? Voice setting at offset 22 7132 // TODO: compare to current setting if sco connection already active 7133 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7134 break; 7135 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7136 // accept_synchronous_connection? Voice setting at offset 18 7137 // TODO: compare to current setting if sco connection already active 7138 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7139 // track outgoing connection 7140 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7141 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 7142 break; 7143 #endif 7144 #endif 7145 7146 #ifdef ENABLE_BLE 7147 #ifdef ENABLE_LE_CENTRAL 7148 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7149 // white list used? 7150 initiator_filter_policy = packet[7]; 7151 switch (initiator_filter_policy) { 7152 case 0: 7153 // whitelist not used 7154 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7155 break; 7156 case 1: 7157 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7158 break; 7159 default: 7160 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7161 break; 7162 } 7163 // track outgoing connection 7164 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 7165 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7166 break; 7167 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7168 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7169 break; 7170 #endif 7171 #endif /* ENABLE_BLE */ 7172 default: 7173 break; 7174 } 7175 7176 hci_stack->num_cmd_packets--; 7177 7178 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7179 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7180 if (err != 0){ 7181 return ERROR_CODE_HARDWARE_FAILURE; 7182 } 7183 return ERROR_CODE_SUCCESS; 7184 } 7185 7186 // disconnect because of security block 7187 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7188 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7189 if (!connection) return; 7190 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7191 } 7192 7193 7194 // Configure Secure Simple Pairing 7195 7196 #ifdef ENABLE_CLASSIC 7197 7198 // enable will enable SSP during init 7199 void gap_ssp_set_enable(int enable){ 7200 hci_stack->ssp_enable = enable; 7201 } 7202 7203 static int hci_local_ssp_activated(void){ 7204 return gap_ssp_supported() && hci_stack->ssp_enable; 7205 } 7206 7207 // if set, BTstack will respond to io capability request using authentication requirement 7208 void gap_ssp_set_io_capability(int io_capability){ 7209 hci_stack->ssp_io_capability = io_capability; 7210 } 7211 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7212 hci_stack->ssp_authentication_requirement = authentication_requirement; 7213 } 7214 7215 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7216 void gap_ssp_set_auto_accept(int auto_accept){ 7217 hci_stack->ssp_auto_accept = auto_accept; 7218 } 7219 7220 void gap_secure_connections_enable(bool enable){ 7221 hci_stack->secure_connections_enable = enable; 7222 } 7223 bool gap_secure_connections_active(void){ 7224 return hci_stack->secure_connections_active; 7225 } 7226 7227 #endif 7228 7229 // va_list part of hci_send_cmd 7230 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7231 if (!hci_can_send_command_packet_now()){ 7232 log_error("hci_send_cmd called but cannot send packet now"); 7233 return ERROR_CODE_COMMAND_DISALLOWED; 7234 } 7235 7236 // for HCI INITIALIZATION 7237 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7238 hci_stack->last_cmd_opcode = cmd->opcode; 7239 7240 hci_reserve_packet_buffer(); 7241 uint8_t * packet = hci_stack->hci_packet_buffer; 7242 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7243 uint8_t status = hci_send_cmd_packet(packet, size); 7244 7245 // release packet buffer on error or for synchronous transport implementations 7246 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7247 hci_release_packet_buffer(); 7248 hci_emit_transport_packet_sent(); 7249 } 7250 7251 return status; 7252 } 7253 7254 /** 7255 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7256 */ 7257 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7258 va_list argptr; 7259 va_start(argptr, cmd); 7260 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7261 va_end(argptr); 7262 return status; 7263 } 7264 7265 // Create various non-HCI events. 7266 // TODO: generalize, use table similar to hci_create_command 7267 7268 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7269 // dump packet 7270 if (dump) { 7271 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7272 } 7273 7274 // dispatch to all event handlers 7275 btstack_linked_list_iterator_t it; 7276 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7277 while (btstack_linked_list_iterator_has_next(&it)){ 7278 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7279 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7280 } 7281 } 7282 7283 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7284 if (!hci_stack->acl_packet_handler) return; 7285 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7286 } 7287 7288 #ifdef ENABLE_CLASSIC 7289 static void hci_notify_if_sco_can_send_now(void){ 7290 // notify SCO sender if waiting 7291 if (!hci_stack->sco_waiting_for_can_send_now) return; 7292 if (hci_can_send_sco_packet_now()){ 7293 hci_stack->sco_waiting_for_can_send_now = 0; 7294 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7295 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7296 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7297 } 7298 } 7299 7300 // parsing end emitting has been merged to reduce code size 7301 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7302 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7303 7304 uint8_t * eir_data; 7305 ad_context_t context; 7306 const uint8_t * name; 7307 uint8_t name_len; 7308 7309 if (size < 3) return; 7310 7311 int event_type = hci_event_packet_get_type(packet); 7312 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7313 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7314 7315 switch (event_type){ 7316 case HCI_EVENT_INQUIRY_RESULT: 7317 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7318 if (size != (3 + (num_responses * 14))) return; 7319 break; 7320 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7321 if (size != 257) return; 7322 if (num_responses != 1) return; 7323 break; 7324 default: 7325 return; 7326 } 7327 7328 // event[1] is set at the end 7329 int i; 7330 for (i=0; i<num_responses;i++){ 7331 memset(event, 0, sizeof(event)); 7332 event[0] = GAP_EVENT_INQUIRY_RESULT; 7333 uint8_t event_size = 27; // if name is not set by EIR 7334 7335 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7336 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7337 (void)memcpy(&event[9], 7338 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7339 3); // class of device 7340 (void)memcpy(&event[12], 7341 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7342 2); // clock offset 7343 7344 switch (event_type){ 7345 case HCI_EVENT_INQUIRY_RESULT: 7346 // 14,15,16,17 = 0, size 18 7347 break; 7348 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7349 event[14] = 1; 7350 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7351 // 16,17 = 0, size 18 7352 break; 7353 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7354 event[14] = 1; 7355 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7356 // EIR packets only contain a single inquiry response 7357 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7358 name = NULL; 7359 // Iterate over EIR data 7360 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7361 uint8_t data_type = ad_iterator_get_data_type(&context); 7362 uint8_t data_size = ad_iterator_get_data_len(&context); 7363 const uint8_t * data = ad_iterator_get_data(&context); 7364 // Prefer Complete Local Name over Shortened Local Name 7365 switch (data_type){ 7366 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7367 if (name) continue; 7368 /* fall through */ 7369 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7370 name = data; 7371 name_len = data_size; 7372 break; 7373 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7374 if (data_size != 8) break; 7375 event[16] = 1; 7376 memcpy(&event[17], data, 8); 7377 break; 7378 default: 7379 break; 7380 } 7381 } 7382 if (name){ 7383 event[25] = 1; 7384 // truncate name if needed 7385 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7386 event[26] = len; 7387 (void)memcpy(&event[27], name, len); 7388 event_size += len; 7389 } 7390 break; 7391 default: 7392 return; 7393 } 7394 event[1] = event_size - 2; 7395 hci_emit_event(event, event_size, 1); 7396 } 7397 } 7398 #endif 7399 7400 void hci_emit_state(void){ 7401 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7402 uint8_t event[3]; 7403 event[0] = BTSTACK_EVENT_STATE; 7404 event[1] = sizeof(event) - 2u; 7405 event[2] = hci_stack->state; 7406 hci_emit_event(event, sizeof(event), 1); 7407 } 7408 7409 #ifdef ENABLE_CLASSIC 7410 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7411 uint8_t event[13]; 7412 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7413 event[1] = sizeof(event) - 2; 7414 event[2] = status; 7415 little_endian_store_16(event, 3, con_handle); 7416 reverse_bd_addr(address, &event[5]); 7417 event[11] = 1; // ACL connection 7418 event[12] = 0; // encryption disabled 7419 hci_emit_event(event, sizeof(event), 1); 7420 } 7421 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7422 if (disable_l2cap_timeouts) return; 7423 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7424 uint8_t event[4]; 7425 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7426 event[1] = sizeof(event) - 2; 7427 little_endian_store_16(event, 2, conn->con_handle); 7428 hci_emit_event(event, sizeof(event), 1); 7429 } 7430 #endif 7431 7432 #ifdef ENABLE_BLE 7433 #ifdef ENABLE_LE_CENTRAL 7434 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){ 7435 uint8_t event[21]; 7436 event[0] = HCI_EVENT_LE_META; 7437 event[1] = sizeof(event) - 2u; 7438 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7439 event[3] = status; 7440 little_endian_store_16(event, 4, con_handle); 7441 event[6] = 0; // TODO: role 7442 event[7] = address_type; 7443 reverse_bd_addr(address, &event[8]); 7444 little_endian_store_16(event, 14, 0); // interval 7445 little_endian_store_16(event, 16, 0); // latency 7446 little_endian_store_16(event, 18, 0); // supervision timeout 7447 event[20] = 0; // master clock accuracy 7448 hci_emit_event(event, sizeof(event), 1); 7449 } 7450 #endif 7451 #endif 7452 7453 static void hci_emit_transport_packet_sent(void){ 7454 // notify upper stack that it might be possible to send again 7455 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7456 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7457 } 7458 7459 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7460 uint8_t event[6]; 7461 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7462 event[1] = sizeof(event) - 2u; 7463 event[2] = 0; // status = OK 7464 little_endian_store_16(event, 3, con_handle); 7465 event[5] = reason; 7466 hci_emit_event(event, sizeof(event), 1); 7467 } 7468 7469 static void hci_emit_nr_connections_changed(void){ 7470 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7471 uint8_t event[3]; 7472 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7473 event[1] = sizeof(event) - 2u; 7474 event[2] = nr_hci_connections(); 7475 hci_emit_event(event, sizeof(event), 1); 7476 } 7477 7478 static void hci_emit_hci_open_failed(void){ 7479 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7480 uint8_t event[2]; 7481 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7482 event[1] = sizeof(event) - 2u; 7483 hci_emit_event(event, sizeof(event), 1); 7484 } 7485 7486 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7487 log_info("hci_emit_dedicated_bonding_result %u ", status); 7488 uint8_t event[9]; 7489 int pos = 0; 7490 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7491 event[pos++] = sizeof(event) - 2u; 7492 event[pos++] = status; 7493 reverse_bd_addr(address, &event[pos]); 7494 hci_emit_event(event, sizeof(event), 1); 7495 } 7496 7497 7498 #ifdef ENABLE_CLASSIC 7499 7500 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7501 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7502 uint8_t event[5]; 7503 int pos = 0; 7504 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7505 event[pos++] = sizeof(event) - 2; 7506 little_endian_store_16(event, 2, con_handle); 7507 pos += 2; 7508 event[pos++] = level; 7509 hci_emit_event(event, sizeof(event), 1); 7510 } 7511 7512 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7513 if (!connection) return LEVEL_0; 7514 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7515 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7516 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7517 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7518 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7519 // LEVEL 4 always requires 128 bit encrytion key size 7520 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7521 security_level = LEVEL_3; 7522 } 7523 return security_level; 7524 } 7525 7526 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7527 uint8_t event[4]; 7528 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7529 event[1] = sizeof(event) - 2; 7530 event[2] = discoverable; 7531 event[3] = connectable; 7532 hci_emit_event(event, sizeof(event), 1); 7533 } 7534 7535 // query if remote side supports eSCO 7536 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7537 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7538 if (!connection) return false; 7539 return (connection->remote_supported_features[0] & 1) != 0; 7540 } 7541 7542 static bool hci_ssp_supported(hci_connection_t * connection){ 7543 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7544 return (connection->bonding_flags & mask) == mask; 7545 } 7546 7547 // query if remote side supports SSP 7548 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7549 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7550 if (!connection) return false; 7551 return hci_ssp_supported(connection) ? 1 : 0; 7552 } 7553 7554 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7555 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7556 } 7557 7558 /** 7559 * Check if remote supported features query has completed 7560 */ 7561 bool hci_remote_features_available(hci_con_handle_t handle){ 7562 hci_connection_t * connection = hci_connection_for_handle(handle); 7563 if (!connection) return false; 7564 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7565 } 7566 7567 /** 7568 * Trigger remote supported features query 7569 */ 7570 7571 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7572 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7573 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7574 } 7575 } 7576 7577 void hci_remote_features_query(hci_con_handle_t con_handle){ 7578 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7579 if (!connection) return; 7580 hci_trigger_remote_features_for_connection(connection); 7581 hci_run(); 7582 } 7583 7584 // GAP API 7585 /** 7586 * @bbrief enable/disable bonding. default is enabled 7587 * @praram enabled 7588 */ 7589 void gap_set_bondable_mode(int enable){ 7590 hci_stack->bondable = enable ? 1 : 0; 7591 } 7592 /** 7593 * @brief Get bondable mode. 7594 * @return 1 if bondable 7595 */ 7596 int gap_get_bondable_mode(void){ 7597 return hci_stack->bondable; 7598 } 7599 7600 /** 7601 * @brief map link keys to security levels 7602 */ 7603 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7604 switch (link_key_type){ 7605 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7606 return LEVEL_4; 7607 case COMBINATION_KEY: 7608 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7609 return LEVEL_3; 7610 default: 7611 return LEVEL_2; 7612 } 7613 } 7614 7615 /** 7616 * @brief map link keys to secure connection yes/no 7617 */ 7618 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7619 switch (link_key_type){ 7620 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7621 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7622 return true; 7623 default: 7624 return false; 7625 } 7626 } 7627 7628 /** 7629 * @brief map link keys to authenticated 7630 */ 7631 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7632 switch (link_key_type){ 7633 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7634 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7635 return true; 7636 default: 7637 return false; 7638 } 7639 } 7640 7641 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7642 log_info("gap_mitm_protection_required_for_security_level %u", level); 7643 return level > LEVEL_2; 7644 } 7645 7646 /** 7647 * @brief get current security level 7648 */ 7649 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7650 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7651 if (!connection) return LEVEL_0; 7652 return gap_security_level_for_connection(connection); 7653 } 7654 7655 /** 7656 * @brief request connection to device to 7657 * @result GAP_AUTHENTICATION_RESULT 7658 */ 7659 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7660 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7661 if (!connection){ 7662 hci_emit_security_level(con_handle, LEVEL_0); 7663 return; 7664 } 7665 7666 btstack_assert(hci_is_le_connection(connection) == false); 7667 7668 // 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) 7669 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7670 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7671 requested_level = LEVEL_4; 7672 } 7673 7674 gap_security_level_t current_level = gap_security_level(con_handle); 7675 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7676 requested_level, connection->requested_security_level, current_level); 7677 7678 // authentication active if authentication request was sent or planned level > 0 7679 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7680 if (authentication_active){ 7681 // authentication already active 7682 if (connection->requested_security_level < requested_level){ 7683 // increase requested level as new level is higher 7684 // TODO: handle re-authentication when done 7685 connection->requested_security_level = requested_level; 7686 } 7687 } else { 7688 // no request active, notify if security sufficient 7689 if (requested_level <= current_level){ 7690 hci_emit_security_level(con_handle, current_level); 7691 return; 7692 } 7693 7694 // store request 7695 connection->requested_security_level = requested_level; 7696 7697 // start to authenticate connection 7698 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7699 7700 // request remote features if not already active, also trigger hci_run 7701 hci_remote_features_query(con_handle); 7702 } 7703 } 7704 7705 /** 7706 * @brief start dedicated bonding with device. disconnect after bonding 7707 * @param device 7708 * @param request MITM protection 7709 * @result GAP_DEDICATED_BONDING_COMPLETE 7710 */ 7711 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7712 7713 // create connection state machine 7714 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7715 7716 if (!connection){ 7717 return BTSTACK_MEMORY_ALLOC_FAILED; 7718 } 7719 7720 // delete linkn key 7721 gap_drop_link_key_for_bd_addr(device); 7722 7723 // configure LEVEL_2/3, dedicated bonding 7724 connection->state = SEND_CREATE_CONNECTION; 7725 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7726 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7727 connection->bonding_flags = BONDING_DEDICATED; 7728 7729 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7730 7731 // handle: connnection failure (connection complete != ok) 7732 // handle: authentication failure 7733 // handle: disconnect on done 7734 7735 hci_run(); 7736 7737 return 0; 7738 } 7739 7740 void gap_set_local_name(const char * local_name){ 7741 hci_stack->local_name = local_name; 7742 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7743 // also update EIR if not set by user 7744 if (hci_stack->eir_data == NULL){ 7745 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7746 } 7747 hci_run(); 7748 } 7749 #endif 7750 7751 7752 #ifdef ENABLE_BLE 7753 7754 #ifdef ENABLE_LE_CENTRAL 7755 void gap_start_scan(void){ 7756 hci_stack->le_scanning_enabled = true; 7757 hci_run(); 7758 } 7759 7760 void gap_stop_scan(void){ 7761 hci_stack->le_scanning_enabled = false; 7762 hci_run(); 7763 } 7764 7765 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7766 hci_stack->le_scan_type = scan_type; 7767 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7768 hci_stack->le_scan_interval = scan_interval; 7769 hci_stack->le_scan_window = scan_window; 7770 hci_stack->le_scanning_param_update = true; 7771 hci_run(); 7772 } 7773 7774 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7775 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7776 } 7777 7778 void gap_set_scan_duplicate_filter(bool enabled){ 7779 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 7780 } 7781 7782 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7783 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7784 if (!conn){ 7785 // disallow if le connection is already outgoing 7786 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7787 log_error("le connection already active"); 7788 return ERROR_CODE_COMMAND_DISALLOWED; 7789 } 7790 7791 log_info("gap_connect: no connection exists yet, creating context"); 7792 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7793 if (!conn){ 7794 // notify client that alloc failed 7795 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7796 log_info("gap_connect: failed to alloc hci_connection_t"); 7797 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7798 } 7799 7800 // set le connecting state 7801 if (hci_is_le_connection_type(addr_type)){ 7802 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7803 } 7804 7805 conn->state = SEND_CREATE_CONNECTION; 7806 log_info("gap_connect: send create connection next"); 7807 hci_run(); 7808 return ERROR_CODE_SUCCESS; 7809 } 7810 7811 if (!hci_is_le_connection(conn) || 7812 (conn->state == SEND_CREATE_CONNECTION) || 7813 (conn->state == SENT_CREATE_CONNECTION)) { 7814 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7815 log_error("gap_connect: classic connection or connect is already being created"); 7816 return GATT_CLIENT_IN_WRONG_STATE; 7817 } 7818 7819 // check if connection was just disconnected 7820 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7821 log_info("gap_connect: send create connection (again)"); 7822 conn->state = SEND_CREATE_CONNECTION; 7823 hci_run(); 7824 return ERROR_CODE_SUCCESS; 7825 } 7826 7827 log_info("gap_connect: context exists with state %u", conn->state); 7828 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7829 hci_run(); 7830 return ERROR_CODE_SUCCESS; 7831 } 7832 7833 // @assumption: only a single outgoing LE Connection exists 7834 static hci_connection_t * gap_get_outgoing_connection(void){ 7835 btstack_linked_item_t *it; 7836 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7837 hci_connection_t * conn = (hci_connection_t *) it; 7838 if (!hci_is_le_connection(conn)) continue; 7839 switch (conn->state){ 7840 case SEND_CREATE_CONNECTION: 7841 case SENT_CREATE_CONNECTION: 7842 return conn; 7843 default: 7844 break; 7845 }; 7846 } 7847 return NULL; 7848 } 7849 7850 uint8_t gap_connect_cancel(void){ 7851 hci_connection_t * conn; 7852 switch (hci_stack->le_connecting_request){ 7853 case LE_CONNECTING_IDLE: 7854 break; 7855 case LE_CONNECTING_WHITELIST: 7856 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7857 hci_run(); 7858 break; 7859 case LE_CONNECTING_DIRECT: 7860 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7861 conn = gap_get_outgoing_connection(); 7862 if (conn == NULL){ 7863 hci_run(); 7864 } else { 7865 switch (conn->state){ 7866 case SEND_CREATE_CONNECTION: 7867 // skip sending create connection and emit event instead 7868 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7869 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7870 btstack_memory_hci_connection_free( conn ); 7871 break; 7872 case SENT_CREATE_CONNECTION: 7873 // let hci_run_general_gap_le cancel outgoing connection 7874 hci_run(); 7875 break; 7876 default: 7877 break; 7878 } 7879 } 7880 break; 7881 default: 7882 btstack_unreachable(); 7883 break; 7884 } 7885 return ERROR_CODE_SUCCESS; 7886 } 7887 7888 /** 7889 * @brief Set connection parameters for outgoing connections 7890 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7891 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7892 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7893 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7894 * @param conn_latency, default: 4 7895 * @param supervision_timeout (unit: 10ms), default: 720 ms 7896 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7897 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7898 */ 7899 7900 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7901 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7902 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7903 hci_stack->le_connection_scan_interval = conn_scan_interval; 7904 hci_stack->le_connection_scan_window = conn_scan_window; 7905 hci_stack->le_connection_interval_min = conn_interval_min; 7906 hci_stack->le_connection_interval_max = conn_interval_max; 7907 hci_stack->le_connection_latency = conn_latency; 7908 hci_stack->le_supervision_timeout = supervision_timeout; 7909 hci_stack->le_minimum_ce_length = min_ce_length; 7910 hci_stack->le_maximum_ce_length = max_ce_length; 7911 } 7912 #endif 7913 7914 /** 7915 * @brief Updates the connection parameters for a given LE connection 7916 * @param handle 7917 * @param conn_interval_min (unit: 1.25ms) 7918 * @param conn_interval_max (unit: 1.25ms) 7919 * @param conn_latency 7920 * @param supervision_timeout (unit: 10ms) 7921 * @return 0 if ok 7922 */ 7923 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7924 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7925 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7926 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7927 connection->le_conn_interval_min = conn_interval_min; 7928 connection->le_conn_interval_max = conn_interval_max; 7929 connection->le_conn_latency = conn_latency; 7930 connection->le_supervision_timeout = supervision_timeout; 7931 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7932 hci_run(); 7933 return 0; 7934 } 7935 7936 /** 7937 * @brief Request an update of the connection parameter for a given LE connection 7938 * @param handle 7939 * @param conn_interval_min (unit: 1.25ms) 7940 * @param conn_interval_max (unit: 1.25ms) 7941 * @param conn_latency 7942 * @param supervision_timeout (unit: 10ms) 7943 * @return 0 if ok 7944 */ 7945 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7946 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7947 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7948 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7949 connection->le_conn_interval_min = conn_interval_min; 7950 connection->le_conn_interval_max = conn_interval_max; 7951 connection->le_conn_latency = conn_latency; 7952 connection->le_supervision_timeout = supervision_timeout; 7953 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7954 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7955 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7956 return 0; 7957 } 7958 7959 #ifdef ENABLE_LE_PERIPHERAL 7960 7961 /** 7962 * @brief Set Advertisement Data 7963 * @param advertising_data_length 7964 * @param advertising_data (max 31 octets) 7965 * @note data is not copied, pointer has to stay valid 7966 */ 7967 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7968 hci_stack->le_advertisements_data_len = advertising_data_length; 7969 hci_stack->le_advertisements_data = advertising_data; 7970 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7971 hci_run(); 7972 } 7973 7974 /** 7975 * @brief Set Scan Response Data 7976 * @param advertising_data_length 7977 * @param advertising_data (max 31 octets) 7978 * @note data is not copied, pointer has to stay valid 7979 */ 7980 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7981 hci_stack->le_scan_response_data_len = scan_response_data_length; 7982 hci_stack->le_scan_response_data = scan_response_data; 7983 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7984 hci_run(); 7985 } 7986 7987 /** 7988 * @brief Set Advertisement Parameters 7989 * @param adv_int_min 7990 * @param adv_int_max 7991 * @param adv_type 7992 * @param direct_address_type 7993 * @param direct_address 7994 * @param channel_map 7995 * @param filter_policy 7996 * 7997 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7998 */ 7999 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8000 uint8_t direct_address_typ, bd_addr_t direct_address, 8001 uint8_t channel_map, uint8_t filter_policy) { 8002 8003 hci_stack->le_advertisements_interval_min = adv_int_min; 8004 hci_stack->le_advertisements_interval_max = adv_int_max; 8005 hci_stack->le_advertisements_type = adv_type; 8006 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8007 hci_stack->le_advertisements_channel_map = channel_map; 8008 hci_stack->le_advertisements_filter_policy = filter_policy; 8009 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8010 6); 8011 8012 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8013 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8014 hci_run(); 8015 } 8016 8017 /** 8018 * @brief Enable/Disable Advertisements 8019 * @param enabled 8020 */ 8021 void gap_advertisements_enable(int enabled){ 8022 if (enabled == 0){ 8023 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8024 } else { 8025 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8026 } 8027 hci_update_advertisements_enabled_for_current_roles(); 8028 hci_run(); 8029 } 8030 8031 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8032 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8033 btstack_linked_list_iterator_t it; 8034 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8035 while (btstack_linked_list_iterator_has_next(&it)){ 8036 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8037 if ( item->advertising_handle == advertising_handle ) { 8038 return item; 8039 } 8040 } 8041 return NULL; 8042 } 8043 8044 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8045 // find free advertisement handle 8046 uint8_t advertisement_handle; 8047 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8048 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8049 } 8050 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8051 // clear 8052 memset(storage, 0, sizeof(le_advertising_set_t)); 8053 // copy params 8054 storage->advertising_handle = advertisement_handle; 8055 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8056 // add to list 8057 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8058 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8059 *out_advertising_handle = advertisement_handle; 8060 // set tasks and start 8061 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8062 hci_run(); 8063 return ERROR_CODE_SUCCESS; 8064 } 8065 8066 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8067 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8068 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8069 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8070 // set tasks and start 8071 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8072 hci_run(); 8073 return ERROR_CODE_SUCCESS; 8074 } 8075 8076 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, 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_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8080 return ERROR_CODE_SUCCESS; 8081 } 8082 8083 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8084 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8085 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8086 memcpy(advertising_set->random_address, random_address, 6); 8087 // set tasks and start 8088 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8089 hci_run(); 8090 return ERROR_CODE_SUCCESS; 8091 } 8092 8093 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 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 advertising_set->adv_data = advertising_data; 8097 advertising_set->adv_data_len = advertising_data_length; 8098 // set tasks and start 8099 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8100 hci_run(); 8101 return ERROR_CODE_SUCCESS; 8102 } 8103 8104 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){ 8105 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8106 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8107 advertising_set->scan_data = scan_response_data; 8108 advertising_set->scan_data_len = scan_response_data_length; 8109 // set tasks and start 8110 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8111 hci_run(); 8112 return ERROR_CODE_SUCCESS; 8113 } 8114 8115 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8116 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8117 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8118 advertising_set->enable_timeout = timeout; 8119 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8120 // set tasks and start 8121 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8122 hci_run(); 8123 return ERROR_CODE_SUCCESS; 8124 } 8125 8126 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8127 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8128 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8129 // set tasks and start 8130 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8131 hci_run(); 8132 return ERROR_CODE_SUCCESS; 8133 } 8134 8135 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8136 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8137 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8138 // set tasks and start 8139 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8140 hci_run(); 8141 return ERROR_CODE_SUCCESS; 8142 } 8143 8144 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8145 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 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 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8149 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8150 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8151 // set tasks and start 8152 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8153 hci_run(); 8154 return ERROR_CODE_SUCCESS; 8155 } 8156 8157 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8158 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8159 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8160 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8161 return ERROR_CODE_SUCCESS; 8162 } 8163 8164 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8165 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8166 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8167 advertising_set->periodic_data = periodic_data; 8168 advertising_set->periodic_data_len = periodic_data_length; 8169 // set tasks and start 8170 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8171 hci_run(); 8172 return ERROR_CODE_SUCCESS; 8173 } 8174 8175 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8176 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8177 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8178 // set tasks and start 8179 advertising_set->periodic_include_adi = include_adi; 8180 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8181 hci_run(); 8182 return ERROR_CODE_SUCCESS; 8183 } 8184 8185 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 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->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8190 hci_run(); 8191 return ERROR_CODE_SUCCESS; 8192 } 8193 8194 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8195 hci_stack->le_past_mode = mode; 8196 hci_stack->le_past_skip = skip; 8197 hci_stack->le_past_sync_timeout = sync_timeout; 8198 hci_stack->le_past_cte_type = cte_type; 8199 hci_stack->le_past_set_default_params = true; 8200 hci_run(); 8201 return ERROR_CODE_SUCCESS; 8202 } 8203 8204 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8205 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8206 if (hci_connection == NULL){ 8207 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8208 } 8209 hci_connection->le_past_sync_handle = sync_handle; 8210 hci_connection->le_past_service_data = service_data; 8211 hci_run(); 8212 return ERROR_CODE_SUCCESS; 8213 } 8214 8215 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8216 8217 #endif 8218 8219 #endif 8220 8221 void hci_le_set_own_address_type(uint8_t own_address_type){ 8222 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8223 if (own_address_type == hci_stack->le_own_addr_type) return; 8224 hci_stack->le_own_addr_type = own_address_type; 8225 8226 #ifdef ENABLE_LE_PERIPHERAL 8227 // update advertisement parameters, too 8228 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8229 hci_run(); 8230 #endif 8231 #ifdef ENABLE_LE_CENTRAL 8232 // note: we don't update scan parameters or modify ongoing connection attempts 8233 #endif 8234 } 8235 8236 void hci_le_random_address_set(const bd_addr_t random_address){ 8237 memcpy(hci_stack->le_random_address, random_address, 6); 8238 hci_stack->le_random_address_set = true; 8239 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8240 hci_run(); 8241 } 8242 8243 #endif 8244 8245 uint8_t gap_disconnect(hci_con_handle_t handle){ 8246 hci_connection_t * conn = hci_connection_for_handle(handle); 8247 if (!conn){ 8248 hci_emit_disconnection_complete(handle, 0); 8249 return 0; 8250 } 8251 // ignore if already disconnected 8252 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8253 return 0; 8254 } 8255 conn->state = SEND_DISCONNECT; 8256 hci_run(); 8257 return 0; 8258 } 8259 8260 int gap_read_rssi(hci_con_handle_t con_handle){ 8261 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8262 if (hci_connection == NULL) return 0; 8263 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8264 hci_run(); 8265 return 1; 8266 } 8267 8268 /** 8269 * @brief Get connection type 8270 * @param con_handle 8271 * @result connection_type 8272 */ 8273 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8274 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8275 if (!conn) return GAP_CONNECTION_INVALID; 8276 switch (conn->address_type){ 8277 case BD_ADDR_TYPE_LE_PUBLIC: 8278 case BD_ADDR_TYPE_LE_RANDOM: 8279 return GAP_CONNECTION_LE; 8280 case BD_ADDR_TYPE_SCO: 8281 return GAP_CONNECTION_SCO; 8282 case BD_ADDR_TYPE_ACL: 8283 return GAP_CONNECTION_ACL; 8284 default: 8285 return GAP_CONNECTION_INVALID; 8286 } 8287 } 8288 8289 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8290 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8291 if (!conn) return HCI_ROLE_INVALID; 8292 return (hci_role_t) conn->role; 8293 } 8294 8295 8296 #ifdef ENABLE_CLASSIC 8297 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8298 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8299 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8300 conn->request_role = role; 8301 hci_run(); 8302 return ERROR_CODE_SUCCESS; 8303 } 8304 #endif 8305 8306 #ifdef ENABLE_BLE 8307 8308 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){ 8309 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8310 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8311 8312 conn->le_phy_update_all_phys = all_phys; 8313 conn->le_phy_update_tx_phys = tx_phys; 8314 conn->le_phy_update_rx_phys = rx_phys; 8315 conn->le_phy_update_phy_options = phy_options; 8316 8317 hci_run(); 8318 8319 return 0; 8320 } 8321 8322 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8323 // check if already in list 8324 btstack_linked_list_iterator_t it; 8325 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8326 while (btstack_linked_list_iterator_has_next(&it)) { 8327 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8328 if (entry->address_type != address_type) { 8329 continue; 8330 } 8331 if (memcmp(entry->address, address, 6) != 0) { 8332 continue; 8333 } 8334 // disallow if already scheduled to add 8335 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8336 return ERROR_CODE_COMMAND_DISALLOWED; 8337 } 8338 // still on controller, but scheduled to remove -> re-add 8339 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8340 return ERROR_CODE_SUCCESS; 8341 } 8342 // alloc and add to list 8343 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8344 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8345 entry->address_type = address_type; 8346 (void)memcpy(entry->address, address, 6); 8347 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8348 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8349 return ERROR_CODE_SUCCESS; 8350 } 8351 8352 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8353 btstack_linked_list_iterator_t it; 8354 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8355 while (btstack_linked_list_iterator_has_next(&it)){ 8356 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8357 if (entry->address_type != address_type) { 8358 continue; 8359 } 8360 if (memcmp(entry->address, address, 6) != 0) { 8361 continue; 8362 } 8363 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8364 // remove from controller if already present 8365 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8366 } else { 8367 // directly remove entry from whitelist 8368 btstack_linked_list_iterator_remove(&it); 8369 btstack_memory_whitelist_entry_free(entry); 8370 } 8371 return ERROR_CODE_SUCCESS; 8372 } 8373 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8374 } 8375 8376 static void hci_whitelist_clear(void){ 8377 btstack_linked_list_iterator_t it; 8378 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8379 while (btstack_linked_list_iterator_has_next(&it)){ 8380 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8381 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8382 // remove from controller if already present 8383 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8384 continue; 8385 } 8386 // directly remove entry from whitelist 8387 btstack_linked_list_iterator_remove(&it); 8388 btstack_memory_whitelist_entry_free(entry); 8389 } 8390 } 8391 8392 // free all entries unconditionally 8393 static void hci_whitelist_free(void){ 8394 btstack_linked_list_iterator_t lit; 8395 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 8396 while (btstack_linked_list_iterator_has_next(&lit)){ 8397 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 8398 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 8399 btstack_memory_whitelist_entry_free(entry); 8400 } 8401 } 8402 8403 /** 8404 * @brief Clear Whitelist 8405 * @return 0 if ok 8406 */ 8407 uint8_t gap_whitelist_clear(void){ 8408 hci_whitelist_clear(); 8409 hci_run(); 8410 return ERROR_CODE_SUCCESS; 8411 } 8412 8413 /** 8414 * @brief Add Device to Whitelist 8415 * @param address_typ 8416 * @param address 8417 * @return 0 if ok 8418 */ 8419 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8420 uint8_t status = hci_whitelist_add(address_type, address); 8421 if (status){ 8422 return status; 8423 } 8424 hci_run(); 8425 return ERROR_CODE_SUCCESS; 8426 } 8427 8428 /** 8429 * @brief Remove Device from Whitelist 8430 * @param address_typ 8431 * @param address 8432 * @return 0 if ok 8433 */ 8434 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8435 uint8_t status = hci_whitelist_remove(address_type, address); 8436 if (status){ 8437 return status; 8438 } 8439 hci_run(); 8440 return ERROR_CODE_SUCCESS; 8441 } 8442 8443 #ifdef ENABLE_LE_CENTRAL 8444 /** 8445 * @brief Connect with Whitelist 8446 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8447 * @return - if ok 8448 */ 8449 uint8_t gap_connect_with_whitelist(void){ 8450 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8451 return ERROR_CODE_COMMAND_DISALLOWED; 8452 } 8453 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8454 hci_run(); 8455 return ERROR_CODE_SUCCESS; 8456 } 8457 8458 /** 8459 * @brief Auto Connection Establishment - Start Connecting to device 8460 * @param address_typ 8461 * @param address 8462 * @return 0 if ok 8463 */ 8464 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8465 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8466 return ERROR_CODE_COMMAND_DISALLOWED; 8467 } 8468 8469 uint8_t status = hci_whitelist_add(address_type, address); 8470 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8471 return status; 8472 } 8473 8474 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8475 8476 hci_run(); 8477 return ERROR_CODE_SUCCESS; 8478 } 8479 8480 /** 8481 * @brief Auto Connection Establishment - Stop Connecting to device 8482 * @param address_typ 8483 * @param address 8484 * @return 0 if ok 8485 */ 8486 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8487 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8488 return ERROR_CODE_COMMAND_DISALLOWED; 8489 } 8490 8491 hci_whitelist_remove(address_type, address); 8492 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8493 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8494 } 8495 hci_run(); 8496 return 0; 8497 } 8498 8499 /** 8500 * @brief Auto Connection Establishment - Stop everything 8501 * @note Convenience function to stop all active auto connection attempts 8502 */ 8503 uint8_t gap_auto_connection_stop_all(void){ 8504 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8505 return ERROR_CODE_COMMAND_DISALLOWED; 8506 } 8507 hci_whitelist_clear(); 8508 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8509 hci_run(); 8510 return ERROR_CODE_SUCCESS; 8511 } 8512 8513 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8514 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8515 if (!conn) return 0; 8516 return conn->le_connection_interval; 8517 } 8518 #endif 8519 #endif 8520 8521 #ifdef ENABLE_CLASSIC 8522 /** 8523 * @brief Set Extended Inquiry Response data 8524 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8525 * @note has to be done before stack starts up 8526 */ 8527 void gap_set_extended_inquiry_response(const uint8_t * data){ 8528 hci_stack->eir_data = data; 8529 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8530 hci_run(); 8531 } 8532 8533 /** 8534 * @brief Start GAP Classic Inquiry 8535 * @param duration in 1.28s units 8536 * @return 0 if ok 8537 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8538 */ 8539 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8540 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8541 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8542 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8543 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8544 } 8545 hci_stack->inquiry_state = duration_in_1280ms_units; 8546 hci_stack->inquiry_max_period_length = 0; 8547 hci_stack->inquiry_min_period_length = 0; 8548 hci_run(); 8549 return 0; 8550 } 8551 8552 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8553 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8554 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8555 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8556 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8557 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8558 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8559 8560 hci_stack->inquiry_state = duration; 8561 hci_stack->inquiry_max_period_length = max_period_length; 8562 hci_stack->inquiry_min_period_length = min_period_length; 8563 hci_run(); 8564 return 0; 8565 } 8566 8567 /** 8568 * @brief Stop GAP Classic Inquiry 8569 * @return 0 if ok 8570 */ 8571 int gap_inquiry_stop(void){ 8572 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8573 // emit inquiry complete event, before it even started 8574 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8575 hci_emit_event(event, sizeof(event), 1); 8576 return 0; 8577 } 8578 switch (hci_stack->inquiry_state){ 8579 case GAP_INQUIRY_STATE_ACTIVE: 8580 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8581 hci_run(); 8582 return ERROR_CODE_SUCCESS; 8583 case GAP_INQUIRY_STATE_PERIODIC: 8584 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8585 hci_run(); 8586 return ERROR_CODE_SUCCESS; 8587 default: 8588 return ERROR_CODE_COMMAND_DISALLOWED; 8589 } 8590 } 8591 8592 void gap_inquiry_set_lap(uint32_t lap){ 8593 hci_stack->inquiry_lap = lap; 8594 } 8595 8596 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8597 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8598 hci_stack->inquiry_scan_window = inquiry_scan_window; 8599 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8600 hci_run(); 8601 } 8602 8603 8604 /** 8605 * @brief Remote Name Request 8606 * @param addr 8607 * @param page_scan_repetition_mode 8608 * @param clock_offset only used when bit 15 is set 8609 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8610 */ 8611 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8612 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8613 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8614 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8615 hci_stack->remote_name_clock_offset = clock_offset; 8616 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8617 hci_run(); 8618 return 0; 8619 } 8620 8621 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8622 hci_stack->gap_pairing_state = state; 8623 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8624 hci_run(); 8625 return 0; 8626 } 8627 8628 /** 8629 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8630 * @param addr 8631 * @param pin_data 8632 * @param pin_len 8633 * @return 0 if ok 8634 */ 8635 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8636 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8637 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8638 hci_stack->gap_pairing_pin_len = pin_len; 8639 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8640 } 8641 8642 /** 8643 * @brief Legacy Pairing Pin Code Response 8644 * @param addr 8645 * @param pin 8646 * @return 0 if ok 8647 */ 8648 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8649 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8650 } 8651 8652 /** 8653 * @brief Abort Legacy Pairing 8654 * @param addr 8655 * @param pin 8656 * @return 0 if ok 8657 */ 8658 int gap_pin_code_negative(bd_addr_t addr){ 8659 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8660 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8661 } 8662 8663 /** 8664 * @brief SSP Passkey Response 8665 * @param addr 8666 * @param passkey 8667 * @return 0 if ok 8668 */ 8669 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8670 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8671 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8672 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8673 } 8674 8675 /** 8676 * @brief Abort SSP Passkey Entry/Pairing 8677 * @param addr 8678 * @param pin 8679 * @return 0 if ok 8680 */ 8681 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8682 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8683 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8684 } 8685 8686 /** 8687 * @brief Accept SSP Numeric Comparison 8688 * @param addr 8689 * @param passkey 8690 * @return 0 if ok 8691 */ 8692 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8693 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8694 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8695 } 8696 8697 /** 8698 * @brief Abort SSP Numeric Comparison/Pairing 8699 * @param addr 8700 * @param pin 8701 * @return 0 if ok 8702 */ 8703 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8704 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8705 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8706 } 8707 8708 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8709 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8710 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8711 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8712 connectionSetAuthenticationFlags(conn, flag); 8713 hci_run(); 8714 return ERROR_CODE_SUCCESS; 8715 } 8716 #endif 8717 8718 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8719 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8720 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8721 } 8722 8723 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8724 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8725 } 8726 #endif 8727 8728 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8729 /** 8730 * @brief Report Remote OOB Data 8731 * @param bd_addr 8732 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8733 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8734 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8735 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8736 */ 8737 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){ 8738 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8739 if (connection == NULL) { 8740 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8741 } 8742 connection->classic_oob_c_192 = c_192; 8743 connection->classic_oob_r_192 = r_192; 8744 8745 // ignore P-256 if not supported by us 8746 if (hci_stack->secure_connections_active){ 8747 connection->classic_oob_c_256 = c_256; 8748 connection->classic_oob_r_256 = r_256; 8749 } 8750 8751 return ERROR_CODE_SUCCESS; 8752 } 8753 /** 8754 * @brief Generate new OOB data 8755 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8756 */ 8757 void gap_ssp_generate_oob_data(void){ 8758 hci_stack->classic_read_local_oob_data = true; 8759 hci_run(); 8760 } 8761 8762 #endif 8763 8764 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8765 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8766 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8767 if (connection == NULL) { 8768 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8769 } 8770 8771 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8772 connection->link_key_type = type; 8773 8774 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8775 } 8776 8777 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8778 /** 8779 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8780 * @param inquiry_mode see bluetooth_defines.h 8781 */ 8782 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8783 hci_stack->inquiry_mode = inquiry_mode; 8784 } 8785 8786 /** 8787 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8788 */ 8789 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8790 hci_stack->sco_voice_setting = voice_setting; 8791 } 8792 8793 /** 8794 * @brief Get SCO Voice Setting 8795 * @return current voice setting 8796 */ 8797 uint16_t hci_get_sco_voice_setting(void){ 8798 return hci_stack->sco_voice_setting; 8799 } 8800 8801 static int hci_have_usb_transport(void){ 8802 if (!hci_stack->hci_transport) return 0; 8803 const char * transport_name = hci_stack->hci_transport->name; 8804 if (!transport_name) return 0; 8805 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8806 } 8807 8808 /** @brief Get SCO packet length for current SCO Voice setting 8809 * @note Using SCO packets of the exact length is required for USB transfer 8810 * @return Length of SCO packets in bytes (not audio frames) 8811 */ 8812 uint16_t hci_get_sco_packet_length(void){ 8813 uint16_t sco_packet_length = 0; 8814 8815 #ifdef ENABLE_SCO_OVER_HCI 8816 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8817 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8818 8819 if (hci_have_usb_transport()){ 8820 // see Core Spec for H2 USB Transfer. 8821 // 3 byte SCO header + 24 bytes per connection 8822 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8823 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8824 } else { 8825 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8826 sco_packet_length = 3 + 60 * multiplier; 8827 // assert that it still fits inside an SCO buffer 8828 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8829 sco_packet_length = 3 + 60; 8830 } 8831 } 8832 #endif 8833 8834 #ifdef HAVE_SCO_TRANSPORT 8835 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8836 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8837 sco_packet_length = 3 + 60 * multiplier; 8838 #endif 8839 return sco_packet_length; 8840 } 8841 8842 /** 8843 * @brief Sets the master/slave policy 8844 * @param policy (0: attempt to become master, 1: let connecting device decide) 8845 */ 8846 void hci_set_master_slave_policy(uint8_t policy){ 8847 hci_stack->master_slave_policy = policy; 8848 } 8849 8850 #endif 8851 8852 HCI_STATE hci_get_state(void){ 8853 return hci_stack->state; 8854 } 8855 8856 #ifdef ENABLE_CLASSIC 8857 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8858 hci_stack->gap_classic_accept_callback = accept_callback; 8859 } 8860 #endif 8861 8862 /** 8863 * @brief Set callback for Bluetooth Hardware Error 8864 */ 8865 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8866 hci_stack->hardware_error_callback = fn; 8867 } 8868 8869 void hci_disconnect_all(void){ 8870 btstack_linked_list_iterator_t it; 8871 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8872 while (btstack_linked_list_iterator_has_next(&it)){ 8873 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8874 if (con->state == SENT_DISCONNECT) continue; 8875 con->state = SEND_DISCONNECT; 8876 } 8877 hci_run(); 8878 } 8879 8880 uint16_t hci_get_manufacturer(void){ 8881 return hci_stack->manufacturer; 8882 } 8883 8884 #ifdef ENABLE_BLE 8885 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8886 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8887 if (!hci_con) return NULL; 8888 return &hci_con->sm_connection; 8889 } 8890 8891 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8892 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8893 #endif 8894 8895 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8896 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8897 if (hci_connection == NULL) return 0; 8898 if (hci_is_le_connection(hci_connection)){ 8899 #ifdef ENABLE_BLE 8900 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8901 if (sm_conn->sm_connection_encrypted) { 8902 return sm_conn->sm_actual_encryption_key_size; 8903 } 8904 #endif 8905 } else { 8906 #ifdef ENABLE_CLASSIC 8907 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8908 return hci_connection->encryption_key_size; 8909 } 8910 #endif 8911 } 8912 return 0; 8913 } 8914 8915 bool gap_authenticated(hci_con_handle_t con_handle){ 8916 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8917 if (hci_connection == NULL) return false; 8918 8919 switch (hci_connection->address_type){ 8920 #ifdef ENABLE_BLE 8921 case BD_ADDR_TYPE_LE_PUBLIC: 8922 case BD_ADDR_TYPE_LE_RANDOM: 8923 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8924 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8925 #endif 8926 #ifdef ENABLE_CLASSIC 8927 case BD_ADDR_TYPE_SCO: 8928 case BD_ADDR_TYPE_ACL: 8929 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8930 #endif 8931 default: 8932 return false; 8933 } 8934 } 8935 8936 bool gap_secure_connection(hci_con_handle_t con_handle){ 8937 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8938 if (hci_connection == NULL) return 0; 8939 8940 switch (hci_connection->address_type){ 8941 #ifdef ENABLE_BLE 8942 case BD_ADDR_TYPE_LE_PUBLIC: 8943 case BD_ADDR_TYPE_LE_RANDOM: 8944 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8945 return hci_connection->sm_connection.sm_connection_sc != 0; 8946 #endif 8947 #ifdef ENABLE_CLASSIC 8948 case BD_ADDR_TYPE_SCO: 8949 case BD_ADDR_TYPE_ACL: 8950 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8951 #endif 8952 default: 8953 return false; 8954 } 8955 } 8956 8957 bool gap_bonded(hci_con_handle_t con_handle){ 8958 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8959 if (hci_connection == NULL) return 0; 8960 8961 #ifdef ENABLE_CLASSIC 8962 link_key_t link_key; 8963 link_key_type_t link_key_type; 8964 #endif 8965 switch (hci_connection->address_type){ 8966 #ifdef ENABLE_BLE 8967 case BD_ADDR_TYPE_LE_PUBLIC: 8968 case BD_ADDR_TYPE_LE_RANDOM: 8969 return hci_connection->sm_connection.sm_le_db_index >= 0; 8970 #endif 8971 #ifdef ENABLE_CLASSIC 8972 case BD_ADDR_TYPE_SCO: 8973 case BD_ADDR_TYPE_ACL: 8974 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8975 #endif 8976 default: 8977 return false; 8978 } 8979 } 8980 8981 #ifdef ENABLE_BLE 8982 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8983 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8984 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8985 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8986 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8987 return sm_conn->sm_connection_authorization_state; 8988 } 8989 #endif 8990 8991 #ifdef ENABLE_CLASSIC 8992 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){ 8993 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8994 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8995 conn->sniff_min_interval = sniff_min_interval; 8996 conn->sniff_max_interval = sniff_max_interval; 8997 conn->sniff_attempt = sniff_attempt; 8998 conn->sniff_timeout = sniff_timeout; 8999 hci_run(); 9000 return 0; 9001 } 9002 9003 /** 9004 * @brief Exit Sniff mode 9005 * @param con_handle 9006 @ @return 0 if ok 9007 */ 9008 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9009 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9010 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9011 conn->sniff_min_interval = 0xffff; 9012 hci_run(); 9013 return 0; 9014 } 9015 9016 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){ 9017 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9018 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9019 conn->sniff_subrating_max_latency = max_latency; 9020 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9021 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9022 hci_run(); 9023 return ERROR_CODE_SUCCESS; 9024 } 9025 9026 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){ 9027 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9028 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9029 conn->qos_service_type = service_type; 9030 conn->qos_token_rate = token_rate; 9031 conn->qos_peak_bandwidth = peak_bandwidth; 9032 conn->qos_latency = latency; 9033 conn->qos_delay_variation = delay_variation; 9034 hci_run(); 9035 return ERROR_CODE_SUCCESS; 9036 } 9037 9038 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9039 hci_stack->new_page_scan_interval = page_scan_interval; 9040 hci_stack->new_page_scan_window = page_scan_window; 9041 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9042 hci_run(); 9043 } 9044 9045 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9046 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9047 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9048 hci_run(); 9049 } 9050 9051 void gap_set_page_timeout(uint16_t page_timeout){ 9052 hci_stack->page_timeout = page_timeout; 9053 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9054 hci_run(); 9055 } 9056 9057 #endif 9058 9059 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9060 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9061 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9062 if (le_device_db_index >= le_device_db_max_count()) return; 9063 uint8_t offset = le_device_db_index >> 3; 9064 uint8_t mask = 1 << (le_device_db_index & 7); 9065 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9066 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9067 // note: go back to remove entries, otherwise, a remove + add will skip the add 9068 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9069 } 9070 } 9071 9072 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9073 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9074 if (le_device_db_index >= le_device_db_max_count()) return; 9075 uint8_t offset = le_device_db_index >> 3; 9076 uint8_t mask = 1 << (le_device_db_index & 7); 9077 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9078 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9079 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9080 } 9081 } 9082 9083 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9084 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9085 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9086 } 9087 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9088 // restart le resolving list update 9089 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9090 } 9091 return ERROR_CODE_SUCCESS; 9092 } 9093 #endif 9094 9095 #ifdef ENABLE_BLE 9096 #ifdef ENABLE_LE_CENTRAL 9097 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9098 9099 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9100 // check if already in list 9101 btstack_linked_list_iterator_t it; 9102 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9103 while (btstack_linked_list_iterator_has_next(&it)) { 9104 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9105 if (entry->sid != advertising_sid) { 9106 continue; 9107 } 9108 if (entry->address_type != address_type) { 9109 continue; 9110 } 9111 if (memcmp(entry->address, address, 6) != 0) { 9112 continue; 9113 } 9114 // disallow if already scheduled to add 9115 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9116 return ERROR_CODE_COMMAND_DISALLOWED; 9117 } 9118 // still on controller, but scheduled to remove -> re-add 9119 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9120 return ERROR_CODE_SUCCESS; 9121 } 9122 // alloc and add to list 9123 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9124 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9125 entry->sid = advertising_sid; 9126 entry->address_type = address_type; 9127 (void)memcpy(entry->address, address, 6); 9128 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9129 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9130 return ERROR_CODE_SUCCESS; 9131 } 9132 9133 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9134 btstack_linked_list_iterator_t it; 9135 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9136 while (btstack_linked_list_iterator_has_next(&it)){ 9137 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9138 if (entry->sid != advertising_sid) { 9139 continue; 9140 } 9141 if (entry->address_type != address_type) { 9142 continue; 9143 } 9144 if (memcmp(entry->address, address, 6) != 0) { 9145 continue; 9146 } 9147 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9148 // remove from controller if already present 9149 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9150 } else { 9151 // directly remove entry from whitelist 9152 btstack_linked_list_iterator_remove(&it); 9153 btstack_memory_periodic_advertiser_list_entry_free(entry); 9154 } 9155 return ERROR_CODE_SUCCESS; 9156 } 9157 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9158 } 9159 9160 static void hci_periodic_advertiser_list_clear(void){ 9161 btstack_linked_list_iterator_t it; 9162 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9163 while (btstack_linked_list_iterator_has_next(&it)){ 9164 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9165 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9166 // remove from controller if already present 9167 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9168 continue; 9169 } 9170 // directly remove entry from whitelist 9171 btstack_linked_list_iterator_remove(&it); 9172 btstack_memory_periodic_advertiser_list_entry_free(entry); 9173 } 9174 } 9175 9176 // free all entries unconditionally 9177 static void hci_periodic_advertiser_list_free(void){ 9178 btstack_linked_list_iterator_t lit; 9179 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 9180 while (btstack_linked_list_iterator_has_next(&lit)){ 9181 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 9182 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 9183 btstack_memory_periodic_advertiser_list_entry_free(entry); 9184 } 9185 } 9186 9187 uint8_t gap_periodic_advertiser_list_clear(void){ 9188 hci_periodic_advertiser_list_clear(); 9189 hci_run(); 9190 return ERROR_CODE_SUCCESS; 9191 } 9192 9193 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9194 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9195 if (status){ 9196 return status; 9197 } 9198 hci_run(); 9199 return ERROR_CODE_SUCCESS; 9200 } 9201 9202 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9203 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9204 if (status){ 9205 return status; 9206 } 9207 hci_run(); 9208 return ERROR_CODE_SUCCESS; 9209 } 9210 9211 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9212 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9213 // abort if already active 9214 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9215 return ERROR_CODE_COMMAND_DISALLOWED; 9216 } 9217 // store request 9218 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9219 hci_stack->le_periodic_sync_options = options; 9220 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9221 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9222 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9223 hci_stack->le_periodic_sync_skip = skip; 9224 hci_stack->le_periodic_sync_timeout = sync_timeout; 9225 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9226 9227 hci_run(); 9228 return ERROR_CODE_SUCCESS; 9229 } 9230 9231 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9232 // abort if not requested 9233 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9234 return ERROR_CODE_COMMAND_DISALLOWED; 9235 } 9236 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9237 hci_run(); 9238 return ERROR_CODE_SUCCESS; 9239 } 9240 9241 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9242 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9243 return ERROR_CODE_COMMAND_DISALLOWED; 9244 } 9245 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9246 hci_run(); 9247 return ERROR_CODE_SUCCESS; 9248 } 9249 9250 #endif 9251 #endif 9252 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9253 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 9254 hci_iso_stream_state_t state) { 9255 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9256 if (iso_stream == NULL){ 9257 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9258 } else { 9259 iso_stream->iso_type = iso_type; 9260 iso_stream->state = state; 9261 iso_stream->con_handle = con_handle; 9262 iso_stream->group_id = group_id; 9263 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9264 return ERROR_CODE_SUCCESS; 9265 } 9266 } 9267 9268 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9269 btstack_linked_list_iterator_t it; 9270 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9271 while (btstack_linked_list_iterator_has_next(&it)){ 9272 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9273 if (iso_stream->con_handle == con_handle ) { 9274 return iso_stream; 9275 } 9276 } 9277 return NULL; 9278 } 9279 9280 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9281 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->con_handle, iso_stream->group_id); 9282 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9283 btstack_memory_hci_iso_stream_free(iso_stream); 9284 } 9285 9286 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9287 btstack_linked_list_iterator_t it; 9288 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9289 while (btstack_linked_list_iterator_has_next(&it)){ 9290 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9291 if ((iso_stream->group_id == group_id) && 9292 (iso_stream->iso_type == iso_type)){ 9293 btstack_linked_list_iterator_remove(&it); 9294 btstack_memory_hci_iso_stream_free(iso_stream); 9295 } 9296 } 9297 } 9298 9299 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9300 btstack_linked_list_iterator_t it; 9301 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9302 while (btstack_linked_list_iterator_has_next(&it)){ 9303 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9304 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9305 (iso_stream->group_id == group_id)){ 9306 btstack_linked_list_iterator_remove(&it); 9307 btstack_memory_hci_iso_stream_free(iso_stream); 9308 } 9309 } 9310 } 9311 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9312 btstack_linked_list_iterator_t it; 9313 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9314 while (btstack_linked_list_iterator_has_next(&it)){ 9315 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9316 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9317 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9318 } 9319 } 9320 } 9321 9322 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9323 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9324 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9325 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9326 return (sdu_len_offset + 2 + sdu_len) == size; 9327 } 9328 9329 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9330 if (hci_stack->iso_packet_handler == NULL) { 9331 return; 9332 } 9333 if (size < 4) { 9334 return; 9335 } 9336 9337 // parse header 9338 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9339 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9340 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9341 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9342 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9343 9344 // assert packet is complete 9345 if ((iso_data_len + 4u) != size){ 9346 return; 9347 } 9348 9349 if ((pb_flag & 0x01) == 0){ 9350 if (pb_flag == 0x02){ 9351 // The ISO_Data_Load field contains a header and a complete SDU. 9352 if (hci_iso_sdu_complete(packet, size)) { 9353 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9354 } 9355 } else { 9356 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9357 if (iso_stream == NULL){ 9358 return; 9359 } 9360 if (size > HCI_ISO_PAYLOAD_SIZE){ 9361 return; 9362 } 9363 memcpy(iso_stream->reassembly_buffer, packet, size); 9364 // fix pb_flag 9365 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9366 iso_stream->reassembly_pos = size; 9367 } 9368 } else { 9369 // iso_data_load contains continuation or last fragment of an SDU 9370 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9371 if (ts_flag != 0){ 9372 return; 9373 } 9374 // append fragment 9375 if (iso_stream == NULL){ 9376 return; 9377 } 9378 if (iso_stream->reassembly_pos == 0){ 9379 return; 9380 } 9381 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9382 // reset reassembly buffer 9383 iso_stream->reassembly_pos = 0; 9384 return; 9385 } 9386 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9387 iso_stream->reassembly_pos += iso_data_len; 9388 9389 // deliver if last fragment and SDU complete 9390 if (pb_flag == 0x03){ 9391 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9392 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9393 } 9394 iso_stream->reassembly_pos = 0; 9395 } 9396 } 9397 } 9398 9399 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9400 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9401 uint16_t pos = 0; 9402 event[pos++] = HCI_EVENT_META_GAP; 9403 event[pos++] = 4 + (2 * big->num_bis); 9404 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9405 event[pos++] = status; 9406 event[pos++] = big->big_handle; 9407 event[pos++] = big->num_bis; 9408 uint8_t i; 9409 for (i=0;i<big->num_bis;i++){ 9410 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9411 pos += 2; 9412 } 9413 hci_emit_event(event, pos, 0); 9414 } 9415 9416 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9417 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9418 uint16_t pos = 0; 9419 event[pos++] = HCI_EVENT_META_GAP; 9420 event[pos++] = 4 + (2 * cig->num_cis); 9421 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9422 event[pos++] = status; 9423 event[pos++] = cig->cig_id; 9424 event[pos++] = cig->num_cis; 9425 uint8_t i; 9426 for (i=0;i<cig->num_cis;i++){ 9427 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9428 pos += 2; 9429 } 9430 hci_emit_event(event, pos, 0); 9431 } 9432 9433 static void 9434 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status) { 9435 uint8_t event [7]; 9436 uint16_t pos = 0; 9437 event[pos++] = HCI_EVENT_META_GAP; 9438 event[pos++] = 5; 9439 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9440 event[pos++] = status; 9441 event[pos++] = cig_id; 9442 little_endian_store_16(event, pos, cis_con_handle); 9443 pos += 2; 9444 hci_emit_event(event, pos, 0); 9445 } 9446 9447 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9448 uint8_t event [4]; 9449 uint16_t pos = 0; 9450 event[pos++] = HCI_EVENT_META_GAP; 9451 event[pos++] = 2; 9452 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9453 event[pos++] = big->big_handle; 9454 hci_emit_event(event, pos, 0); 9455 } 9456 9457 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9458 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9459 uint16_t pos = 0; 9460 event[pos++] = HCI_EVENT_META_GAP; 9461 event[pos++] = 4; 9462 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9463 event[pos++] = status; 9464 event[pos++] = big_sync->big_handle; 9465 event[pos++] = big_sync->num_bis; 9466 uint8_t i; 9467 for (i=0;i<big_sync->num_bis;i++){ 9468 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9469 pos += 2; 9470 } 9471 hci_emit_event(event, pos, 0); 9472 } 9473 9474 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9475 uint8_t event [4]; 9476 uint16_t pos = 0; 9477 event[pos++] = HCI_EVENT_META_GAP; 9478 event[pos++] = 2; 9479 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9480 event[pos++] = big_handle; 9481 hci_emit_event(event, pos, 0); 9482 } 9483 9484 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9485 uint8_t event[6]; 9486 uint16_t pos = 0; 9487 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9488 event[pos++] = sizeof(event) - 2; 9489 event[pos++] = big->big_handle; 9490 event[pos++] = bis_index; 9491 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9492 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9493 } 9494 9495 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9496 uint8_t event[4]; 9497 uint16_t pos = 0; 9498 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9499 event[pos++] = sizeof(event) - 2; 9500 little_endian_store_16(event, pos, cis_con_handle); 9501 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9502 } 9503 9504 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9505 btstack_linked_list_iterator_t it; 9506 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9507 while (btstack_linked_list_iterator_has_next(&it)){ 9508 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9509 if ( big->big_handle == big_handle ) { 9510 return big; 9511 } 9512 } 9513 return NULL; 9514 } 9515 9516 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9517 btstack_linked_list_iterator_t it; 9518 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9519 while (btstack_linked_list_iterator_has_next(&it)){ 9520 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9521 if ( big_sync->big_handle == big_handle ) { 9522 return big_sync; 9523 } 9524 } 9525 return NULL; 9526 } 9527 9528 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9529 hci_stack->iso_packets_to_queue = num_packets; 9530 } 9531 9532 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9533 btstack_linked_list_iterator_t it; 9534 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9535 while (btstack_linked_list_iterator_has_next(&it)){ 9536 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9537 if ( cig->cig_id == cig_id ) { 9538 return cig; 9539 } 9540 } 9541 return NULL; 9542 } 9543 9544 static void hci_iso_notify_can_send_now(void){ 9545 9546 // BIG 9547 9548 btstack_linked_list_iterator_t it; 9549 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9550 while (btstack_linked_list_iterator_has_next(&it)){ 9551 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9552 // track number completed packet timestamps 9553 if (big->num_completed_timestamp_current_valid){ 9554 big->num_completed_timestamp_current_valid = false; 9555 if (big->num_completed_timestamp_previous_valid){ 9556 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9557 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9558 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9559 big->num_completed_timestamp_previous_ms); 9560 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9561 // to catch up, skip packet on all BIS 9562 uint8_t i; 9563 for (i=0;i<big->num_bis;i++){ 9564 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9565 if (iso_stream){ 9566 iso_stream->num_packets_to_skip++; 9567 } 9568 } 9569 } 9570 } 9571 big->num_completed_timestamp_previous_valid = true; 9572 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9573 } 9574 9575 if (big->can_send_now_requested){ 9576 // check if no outgoing iso packets pending and no can send now have to be emitted 9577 uint8_t i; 9578 bool can_send = true; 9579 uint8_t num_iso_queued_minimum = 0; 9580 for (i=0;i<big->num_bis;i++){ 9581 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9582 if (iso_stream == NULL) continue; 9583 // handle case where individual ISO packet was sent too late: 9584 // for each additionally queued packet, a new one needs to get skipped 9585 if (i==0){ 9586 num_iso_queued_minimum = iso_stream->num_packets_sent; 9587 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9588 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9589 iso_stream->num_packets_to_skip += num_packets_to_skip; 9590 iso_stream->num_packets_sent -= num_packets_to_skip; 9591 } 9592 // check if we can send now 9593 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9594 can_send = false; 9595 break; 9596 } 9597 } 9598 if (can_send){ 9599 // propagate can send now to individual streams 9600 big->can_send_now_requested = false; 9601 for (i=0;i<big->num_bis;i++){ 9602 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9603 iso_stream->emit_ready_to_send = true; 9604 } 9605 } 9606 } 9607 } 9608 9609 if (hci_stack->hci_packet_buffer_reserved) return; 9610 9611 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9612 while (btstack_linked_list_iterator_has_next(&it)){ 9613 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9614 // report bis ready 9615 uint8_t i; 9616 for (i=0;i<big->num_bis;i++){ 9617 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9618 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9619 iso_stream->emit_ready_to_send = false; 9620 hci_emit_bis_can_send_now(big, i); 9621 break; 9622 } 9623 } 9624 } 9625 9626 // CIS 9627 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9628 while (btstack_linked_list_iterator_has_next(&it)) { 9629 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9630 if ((iso_stream->can_send_now_requested) && 9631 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9632 iso_stream->can_send_now_requested = false; 9633 hci_emit_cis_can_send_now(iso_stream->con_handle); 9634 } 9635 } 9636 } 9637 9638 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9639 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9640 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9641 } 9642 if (big_params->num_bis == 0){ 9643 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9644 } 9645 if (big_params->num_bis > MAX_NR_BIS){ 9646 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9647 } 9648 9649 // reserve ISO Streams 9650 uint8_t i; 9651 uint8_t status = ERROR_CODE_SUCCESS; 9652 for (i=0;i<big_params->num_bis;i++){ 9653 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_CON_HANDLE_INVALID, big_params->big_handle, 9654 HCI_ISO_STREAM_STATE_REQUESTED); 9655 if (status != ERROR_CODE_SUCCESS) { 9656 break; 9657 } 9658 } 9659 9660 // free structs on error 9661 if (status != ERROR_CODE_SUCCESS){ 9662 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9663 return status; 9664 } 9665 9666 le_audio_big_t * big = storage; 9667 big->big_handle = big_params->big_handle; 9668 big->params = big_params; 9669 big->state = LE_AUDIO_BIG_STATE_CREATE; 9670 big->num_bis = big_params->num_bis; 9671 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9672 9673 hci_run(); 9674 9675 return ERROR_CODE_SUCCESS; 9676 } 9677 9678 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9679 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9680 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9681 } 9682 if (big_sync_params->num_bis == 0){ 9683 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9684 } 9685 if (big_sync_params->num_bis > MAX_NR_BIS){ 9686 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9687 } 9688 9689 le_audio_big_sync_t * big_sync = storage; 9690 big_sync->big_handle = big_sync_params->big_handle; 9691 big_sync->params = big_sync_params; 9692 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9693 big_sync->num_bis = big_sync_params->num_bis; 9694 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9695 9696 hci_run(); 9697 9698 return ERROR_CODE_SUCCESS; 9699 } 9700 9701 uint8_t gap_big_terminate(uint8_t big_handle){ 9702 le_audio_big_t * big = hci_big_for_handle(big_handle); 9703 if (big == NULL){ 9704 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9705 } 9706 switch (big->state){ 9707 case LE_AUDIO_BIG_STATE_CREATE: 9708 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9709 hci_emit_big_terminated(big); 9710 break; 9711 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9712 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9713 break; 9714 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9715 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9716 case LE_AUDIO_BIG_STATE_ACTIVE: 9717 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9718 hci_run(); 9719 break; 9720 default: 9721 return ERROR_CODE_COMMAND_DISALLOWED; 9722 } 9723 return ERROR_CODE_SUCCESS; 9724 } 9725 9726 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9727 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9728 if (big_sync == NULL){ 9729 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9730 } 9731 switch (big_sync->state){ 9732 case LE_AUDIO_BIG_STATE_CREATE: 9733 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9734 hci_emit_big_sync_stopped(big_handle); 9735 break; 9736 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9737 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9738 break; 9739 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9740 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9741 case LE_AUDIO_BIG_STATE_ACTIVE: 9742 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9743 hci_run(); 9744 break; 9745 default: 9746 return ERROR_CODE_COMMAND_DISALLOWED; 9747 } 9748 return ERROR_CODE_SUCCESS; 9749 } 9750 9751 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9752 le_audio_big_t * big = hci_big_for_handle(big_handle); 9753 if (big == NULL){ 9754 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9755 } 9756 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9757 return ERROR_CODE_COMMAND_DISALLOWED; 9758 } 9759 big->can_send_now_requested = true; 9760 hci_iso_notify_can_send_now(); 9761 return ERROR_CODE_SUCCESS; 9762 } 9763 9764 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 9765 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9766 if (iso_stream == NULL){ 9767 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9768 } 9769 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 9770 return ERROR_CODE_COMMAND_DISALLOWED; 9771 } 9772 iso_stream->can_send_now_requested = true; 9773 hci_iso_notify_can_send_now(); 9774 return ERROR_CODE_SUCCESS; 9775 } 9776 9777 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 9778 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 9779 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9780 } 9781 if (cig_params->num_cis == 0){ 9782 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9783 } 9784 if (cig_params->num_cis > MAX_NR_BIS){ 9785 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9786 } 9787 9788 // reserve ISO Streams 9789 uint8_t i; 9790 uint8_t status = ERROR_CODE_SUCCESS; 9791 for (i=0;i<cig_params->num_cis;i++){ 9792 status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_CON_HANDLE_INVALID, cig_params->cig_id, 9793 HCI_ISO_STREAM_STATE_REQUESTED); 9794 if (status != ERROR_CODE_SUCCESS) { 9795 break; 9796 } 9797 } 9798 9799 // free structs on error 9800 if (status != ERROR_CODE_SUCCESS){ 9801 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 9802 return status; 9803 } 9804 9805 le_audio_cig_t * cig = storage; 9806 cig->cig_id = cig_params->cig_id; 9807 cig->num_cis = cig_params->num_cis; 9808 cig->params = cig_params; 9809 cig->state = LE_AUDIO_CIG_STATE_CREATE; 9810 for (i=0;i<cig->num_cis;i++){ 9811 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 9812 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 9813 } 9814 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 9815 9816 hci_run(); 9817 9818 return ERROR_CODE_SUCCESS; 9819 } 9820 9821 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 9822 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 9823 if (cig == NULL){ 9824 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9825 } 9826 9827 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 9828 return ERROR_CODE_COMMAND_DISALLOWED; 9829 } 9830 9831 // store ACL Connection Handles 9832 uint8_t i; 9833 for (i=0;i<cig->num_cis;i++){ 9834 // check that all con handles exit 9835 hci_con_handle_t cis_handle = cis_con_handles[i]; 9836 uint8_t j; 9837 bool found = false; 9838 for (j=0;j<cig->num_cis;j++){ 9839 if (cig->cis_con_handles[j] == cis_handle){ 9840 cig->acl_con_handles[j] = acl_con_handles[j]; 9841 found = true; 9842 break; 9843 } 9844 } 9845 if (!found){ 9846 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9847 } 9848 } 9849 9850 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 9851 hci_run(); 9852 9853 return ERROR_CODE_SUCCESS; 9854 } 9855 9856 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_con_handle, hci_iso_stream_state_t state){ 9857 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9858 if (iso_stream != NULL){ 9859 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9860 } 9861 9862 uint8_t status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, cis_con_handle, 9863 HCI_ISO_GROUP_ID_INVALID, state); 9864 if (status == ERROR_CODE_SUCCESS){ 9865 return status; 9866 } 9867 9868 hci_run(); 9869 return ERROR_CODE_SUCCESS; 9870 } 9871 9872 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 9873 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 9874 } 9875 9876 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 9877 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 9878 } 9879 9880 9881 #endif 9882 #endif /* ENABLE_BLE */ 9883 9884 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9885 void hci_setup_test_connections_fuzz(void){ 9886 hci_connection_t * conn; 9887 9888 // default address: 66:55:44:33:00:01 9889 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9890 9891 // setup Controller info 9892 hci_stack->num_cmd_packets = 255; 9893 hci_stack->acl_packets_total_num = 255; 9894 9895 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9896 addr[5] = 0x01; 9897 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9898 conn->con_handle = addr[5]; 9899 conn->role = HCI_ROLE_SLAVE; 9900 conn->state = RECEIVED_CONNECTION_REQUEST; 9901 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9902 9903 // setup incoming Classic SCO connection with con handle 0x0002 9904 addr[5] = 0x02; 9905 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9906 conn->con_handle = addr[5]; 9907 conn->role = HCI_ROLE_SLAVE; 9908 conn->state = RECEIVED_CONNECTION_REQUEST; 9909 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9910 9911 // setup ready Classic ACL connection with con handle 0x0003 9912 addr[5] = 0x03; 9913 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9914 conn->con_handle = addr[5]; 9915 conn->role = HCI_ROLE_SLAVE; 9916 conn->state = OPEN; 9917 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9918 9919 // setup ready Classic SCO connection with con handle 0x0004 9920 addr[5] = 0x04; 9921 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9922 conn->con_handle = addr[5]; 9923 conn->role = HCI_ROLE_SLAVE; 9924 conn->state = OPEN; 9925 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9926 9927 // setup ready LE ACL connection with con handle 0x005 and public address 9928 addr[5] = 0x05; 9929 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9930 conn->con_handle = addr[5]; 9931 conn->role = HCI_ROLE_SLAVE; 9932 conn->state = OPEN; 9933 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9934 conn->sm_connection.sm_connection_encrypted = 1; 9935 } 9936 9937 void hci_free_connections_fuzz(void){ 9938 btstack_linked_list_iterator_t it; 9939 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9940 while (btstack_linked_list_iterator_has_next(&it)){ 9941 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9942 btstack_linked_list_iterator_remove(&it); 9943 btstack_memory_hci_connection_free(con); 9944 } 9945 } 9946 void hci_simulate_working_fuzz(void){ 9947 hci_stack->le_scanning_param_update = false; 9948 hci_init_done(); 9949 hci_stack->num_cmd_packets = 255; 9950 } 9951 #endif 9952