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 // check state 5174 if (connection->state == SENT_DISCONNECT) return; 5175 connection->state = SENT_DISCONNECT; 5176 5177 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 5178 5179 // finally, send the disconnect command 5180 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5181 return; 5182 } 5183 5184 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5185 // stop BIGs and BIG Syncs 5186 if (hci_stack->le_audio_bigs != NULL){ 5187 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5188 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5189 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5190 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5191 return; 5192 } 5193 if (hci_stack->le_audio_big_syncs != NULL){ 5194 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5195 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5196 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5197 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5198 return; 5199 } 5200 #endif 5201 5202 btstack_run_loop_remove_timer(&hci_stack->timeout); 5203 5204 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5205 log_info("HCI_STATE_HALTING: wait 50 ms"); 5206 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5207 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5208 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5209 btstack_run_loop_add_timer(&hci_stack->timeout); 5210 break; 5211 5212 case HCI_HALTING_CLOSE: 5213 // close left over connections (that had not been properly closed before) 5214 hci_discard_connections(); 5215 5216 log_info("HCI_STATE_HALTING, calling off"); 5217 5218 // switch mode 5219 hci_power_control_off(); 5220 5221 log_info("HCI_STATE_HALTING, emitting state"); 5222 hci_emit_state(); 5223 log_info("HCI_STATE_HALTING, done"); 5224 break; 5225 5226 case HCI_HALTING_W4_CLOSE_TIMER: 5227 // keep waiting 5228 5229 break; 5230 default: 5231 break; 5232 } 5233 }; 5234 5235 static void hci_falling_asleep_run(void){ 5236 hci_connection_t * connection; 5237 switch(hci_stack->substate) { 5238 case HCI_FALLING_ASLEEP_DISCONNECT: 5239 log_info("HCI_STATE_FALLING_ASLEEP"); 5240 // close all open connections 5241 connection = (hci_connection_t *) hci_stack->connections; 5242 if (connection){ 5243 5244 // send disconnect 5245 if (!hci_can_send_command_packet_now()) return; 5246 5247 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5248 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5249 5250 // send disconnected event right away - causes higher layer connections to get closed, too. 5251 hci_shutdown_connection(connection); 5252 return; 5253 } 5254 5255 if (hci_classic_supported()){ 5256 // disable page and inquiry scan 5257 if (!hci_can_send_command_packet_now()) return; 5258 5259 log_info("HCI_STATE_HALTING, disabling inq scans"); 5260 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5261 5262 // continue in next sub state 5263 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5264 break; 5265 } 5266 5267 /* fall through */ 5268 5269 case HCI_FALLING_ASLEEP_COMPLETE: 5270 log_info("HCI_STATE_HALTING, calling sleep"); 5271 // switch mode 5272 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5273 hci_emit_state(); 5274 break; 5275 5276 default: 5277 break; 5278 } 5279 } 5280 5281 #ifdef ENABLE_CLASSIC 5282 5283 static void hci_update_scan_enable(void){ 5284 // 2 = page scan, 1 = inq scan 5285 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5286 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5287 hci_run(); 5288 } 5289 5290 void gap_discoverable_control(uint8_t enable){ 5291 if (enable) enable = 1; // normalize argument 5292 5293 if (hci_stack->discoverable == enable){ 5294 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5295 return; 5296 } 5297 5298 hci_stack->discoverable = enable; 5299 hci_update_scan_enable(); 5300 } 5301 5302 void gap_connectable_control(uint8_t enable){ 5303 if (enable) enable = 1; // normalize argument 5304 5305 // don't emit event 5306 if (hci_stack->connectable == enable) return; 5307 5308 hci_stack->connectable = enable; 5309 hci_update_scan_enable(); 5310 } 5311 #endif 5312 5313 void gap_local_bd_addr(bd_addr_t address_buffer){ 5314 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5315 } 5316 5317 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5318 static void hci_host_num_completed_packets(void){ 5319 5320 // create packet manually as arrays are not supported and num_commands should not get reduced 5321 hci_reserve_packet_buffer(); 5322 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5323 5324 uint16_t size = 0; 5325 uint16_t num_handles = 0; 5326 packet[size++] = 0x35; 5327 packet[size++] = 0x0c; 5328 size++; // skip param len 5329 size++; // skip num handles 5330 5331 // add { handle, packets } entries 5332 btstack_linked_item_t * it; 5333 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5334 hci_connection_t * connection = (hci_connection_t *) it; 5335 if (connection->num_packets_completed){ 5336 little_endian_store_16(packet, size, connection->con_handle); 5337 size += 2; 5338 little_endian_store_16(packet, size, connection->num_packets_completed); 5339 size += 2; 5340 // 5341 num_handles++; 5342 connection->num_packets_completed = 0; 5343 } 5344 } 5345 5346 packet[2] = size - 3; 5347 packet[3] = num_handles; 5348 5349 hci_stack->host_completed_packets = 0; 5350 5351 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5352 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5353 5354 // release packet buffer for synchronous transport implementations 5355 if (hci_transport_synchronous()){ 5356 hci_release_packet_buffer(); 5357 hci_emit_transport_packet_sent(); 5358 } 5359 } 5360 #endif 5361 5362 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5363 UNUSED(ds); 5364 hci_stack->substate = HCI_HALTING_CLOSE; 5365 // allow packet handlers to defer final shutdown 5366 hci_emit_state(); 5367 hci_run(); 5368 } 5369 5370 static bool hci_run_acl_fragments(void){ 5371 if (hci_stack->acl_fragmentation_total_size > 0u) { 5372 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5373 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5374 if (connection) { 5375 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5376 hci_send_acl_packet_fragments(connection); 5377 return true; 5378 } 5379 } else { 5380 // connection gone -> discard further fragments 5381 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5382 hci_stack->acl_fragmentation_total_size = 0; 5383 hci_stack->acl_fragmentation_pos = 0; 5384 } 5385 } 5386 return false; 5387 } 5388 5389 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5390 static bool hci_run_iso_fragments(void){ 5391 if (hci_stack->iso_fragmentation_total_size > 0u) { 5392 // TODO: flow control 5393 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5394 hci_send_iso_packet_fragments(); 5395 return true; 5396 } 5397 } 5398 return false; 5399 } 5400 #endif 5401 5402 #ifdef ENABLE_CLASSIC 5403 5404 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5405 static bool hci_classic_operation_active(void) { 5406 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5407 return true; 5408 } 5409 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5410 return true; 5411 } 5412 btstack_linked_item_t * it; 5413 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5414 hci_connection_t *connection = (hci_connection_t *) it; 5415 switch (connection->state) { 5416 case SENT_CREATE_CONNECTION: 5417 case SENT_CANCEL_CONNECTION: 5418 case SENT_DISCONNECT: 5419 return true; 5420 default: 5421 break; 5422 } 5423 } 5424 return false; 5425 } 5426 #endif 5427 5428 static bool hci_run_general_gap_classic(void){ 5429 5430 // assert stack is working and classic is active 5431 if (hci_classic_supported() == false) return false; 5432 if (hci_stack->state != HCI_STATE_WORKING) return false; 5433 5434 // decline incoming connections 5435 if (hci_stack->decline_reason){ 5436 uint8_t reason = hci_stack->decline_reason; 5437 hci_stack->decline_reason = 0; 5438 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5439 return true; 5440 } 5441 5442 if (hci_stack->gap_tasks_classic != 0){ 5443 hci_run_gap_tasks_classic(); 5444 return true; 5445 } 5446 5447 // start/stop inquiry 5448 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5449 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5450 if (hci_classic_operation_active() == false) 5451 #endif 5452 { 5453 uint8_t duration = hci_stack->inquiry_state; 5454 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5455 if (hci_stack->inquiry_max_period_length != 0){ 5456 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); 5457 } else { 5458 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5459 } 5460 return true; 5461 } 5462 } 5463 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5464 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5465 hci_send_cmd(&hci_inquiry_cancel); 5466 return true; 5467 } 5468 5469 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5470 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5471 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5472 return true; 5473 } 5474 5475 // remote name request 5476 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5477 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5478 if (hci_classic_operation_active() == false) 5479 #endif 5480 { 5481 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5482 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5483 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5484 return true; 5485 } 5486 } 5487 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5488 // Local OOB data 5489 if (hci_stack->classic_read_local_oob_data){ 5490 hci_stack->classic_read_local_oob_data = false; 5491 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5492 hci_send_cmd(&hci_read_local_extended_oob_data); 5493 } else { 5494 hci_send_cmd(&hci_read_local_oob_data); 5495 } 5496 } 5497 #endif 5498 // pairing 5499 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5500 uint8_t state = hci_stack->gap_pairing_state; 5501 uint8_t pin_code[16]; 5502 switch (state){ 5503 case GAP_PAIRING_STATE_SEND_PIN: 5504 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5505 memset(pin_code, 0, 16); 5506 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5507 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5508 break; 5509 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5510 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5511 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5512 break; 5513 case GAP_PAIRING_STATE_SEND_PASSKEY: 5514 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5515 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5516 break; 5517 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5518 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5519 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5520 break; 5521 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5522 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5523 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5524 break; 5525 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5526 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5527 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5528 break; 5529 default: 5530 break; 5531 } 5532 return true; 5533 } 5534 return false; 5535 } 5536 #endif 5537 5538 #ifdef ENABLE_BLE 5539 5540 #ifdef ENABLE_LE_CENTRAL 5541 static void hci_le_scan_stop(void){ 5542 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5543 if (hci_extended_advertising_supported()) { 5544 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5545 } else 5546 #endif 5547 { 5548 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5549 } 5550 } 5551 #endif 5552 5553 #ifdef ENABLE_LE_PERIPHERAL 5554 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5555 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5556 uint8_t operation = 0; 5557 if (pos == 0){ 5558 // first fragment or complete data 5559 operation |= 1; 5560 } 5561 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5562 // last fragment or complete data 5563 operation |= 2; 5564 } 5565 return operation; 5566 } 5567 #endif 5568 #endif 5569 5570 static bool hci_run_general_gap_le(void){ 5571 5572 btstack_linked_list_iterator_t lit; 5573 5574 // Phase 1: collect what to stop 5575 5576 #ifdef ENABLE_LE_CENTRAL 5577 bool scanning_stop = false; 5578 bool connecting_stop = false; 5579 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5580 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5581 bool periodic_sync_stop = false; 5582 #endif 5583 #endif 5584 #endif 5585 5586 #ifdef ENABLE_LE_PERIPHERAL 5587 bool advertising_stop = false; 5588 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5589 le_advertising_set_t * advertising_stop_set = NULL; 5590 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5591 bool periodic_advertising_stop = false; 5592 #endif 5593 #endif 5594 #endif 5595 5596 // check if own address changes 5597 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5598 5599 // check if whitelist needs modification 5600 bool whitelist_modification_pending = false; 5601 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5602 while (btstack_linked_list_iterator_has_next(&lit)){ 5603 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5604 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5605 whitelist_modification_pending = true; 5606 break; 5607 } 5608 } 5609 5610 // check if resolving list needs modification 5611 bool resolving_list_modification_pending = false; 5612 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5613 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5614 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5615 resolving_list_modification_pending = true; 5616 } 5617 #endif 5618 5619 #ifdef ENABLE_LE_CENTRAL 5620 5621 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5622 // check if periodic advertiser list needs modification 5623 bool periodic_list_modification_pending = false; 5624 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5625 while (btstack_linked_list_iterator_has_next(&lit)){ 5626 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5627 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5628 periodic_list_modification_pending = true; 5629 break; 5630 } 5631 } 5632 #endif 5633 5634 // scanning control 5635 if (hci_stack->le_scanning_active) { 5636 // stop if: 5637 // - parameter change required 5638 // - it's disabled 5639 // - whitelist change required but used for scanning 5640 // - resolving list modified 5641 // - own address changes 5642 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5643 if ((hci_stack->le_scanning_param_update) || 5644 !hci_stack->le_scanning_enabled || 5645 (scanning_uses_whitelist && whitelist_modification_pending) || 5646 resolving_list_modification_pending || 5647 random_address_change){ 5648 5649 scanning_stop = true; 5650 } 5651 } 5652 5653 // connecting control 5654 bool connecting_with_whitelist; 5655 switch (hci_stack->le_connecting_state){ 5656 case LE_CONNECTING_DIRECT: 5657 case LE_CONNECTING_WHITELIST: 5658 // stop connecting if: 5659 // - connecting uses white and whitelist modification pending 5660 // - if it got disabled 5661 // - resolving list modified 5662 // - own address changes 5663 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5664 if ((connecting_with_whitelist && whitelist_modification_pending) || 5665 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5666 resolving_list_modification_pending || 5667 random_address_change) { 5668 5669 connecting_stop = true; 5670 } 5671 break; 5672 default: 5673 break; 5674 } 5675 5676 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5677 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5678 // periodic sync control 5679 bool sync_with_advertiser_list; 5680 switch(hci_stack->le_periodic_sync_state){ 5681 case LE_CONNECTING_DIRECT: 5682 case LE_CONNECTING_WHITELIST: 5683 // stop sync if: 5684 // - sync with advertiser list and advertiser list modification pending 5685 // - if it got disabled 5686 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5687 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5688 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5689 periodic_sync_stop = true; 5690 } 5691 break; 5692 default: 5693 break; 5694 } 5695 #endif 5696 #endif 5697 5698 #endif /* ENABLE_LE_CENTRAL */ 5699 5700 #ifdef ENABLE_LE_PERIPHERAL 5701 // le advertisement control 5702 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5703 // stop if: 5704 // - parameter change required 5705 // - random address used in advertising and changes 5706 // - it's disabled 5707 // - whitelist change required but used for advertisement filter policy 5708 // - resolving list modified 5709 // - own address changes 5710 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5711 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5712 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5713 if (advertising_change || 5714 (advertising_uses_random_address && random_address_change) || 5715 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5716 (advertising_uses_whitelist && whitelist_modification_pending) || 5717 resolving_list_modification_pending || 5718 random_address_change) { 5719 5720 advertising_stop = true; 5721 } 5722 } 5723 5724 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5725 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5726 btstack_linked_list_iterator_t it; 5727 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5728 while (btstack_linked_list_iterator_has_next(&it)){ 5729 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5730 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5731 // stop if: 5732 // - parameter change required 5733 // - random address used in connectable advertising and changes 5734 // - it's disabled 5735 // - whitelist change required but used for advertisement filter policy 5736 // - resolving list modified 5737 // - own address changes 5738 // - advertisement set will be removed 5739 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5740 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5741 bool advertising_uses_random_address = 5742 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5743 advertising_connectable; 5744 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5745 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5746 bool advertising_set_random_address_change = 5747 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5748 bool advertising_set_will_be_removed = 5749 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5750 if (advertising_parameter_change || 5751 (advertising_uses_random_address && advertising_set_random_address_change) || 5752 (advertising_enabled == false) || 5753 (advertising_uses_whitelist && whitelist_modification_pending) || 5754 resolving_list_modification_pending || 5755 advertising_set_will_be_removed) { 5756 5757 advertising_stop = true; 5758 advertising_stop_set = advertising_set; 5759 break; 5760 } 5761 } 5762 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5763 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5764 // stop if: 5765 // - it's disabled 5766 // - parameter change required 5767 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5768 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5769 if ((periodic_enabled == false) || periodic_parameter_change){ 5770 periodic_advertising_stop = true; 5771 advertising_stop_set = advertising_set; 5772 } 5773 } 5774 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5775 } 5776 } 5777 #endif 5778 5779 #endif 5780 5781 5782 // Phase 2: stop everything that should be off during modifications 5783 5784 5785 // 2.1 Outgoing connection 5786 #ifdef ENABLE_LE_CENTRAL 5787 if (connecting_stop){ 5788 hci_send_cmd(&hci_le_create_connection_cancel); 5789 return true; 5790 } 5791 #endif 5792 5793 // 2.2 Scanning 5794 #ifdef ENABLE_LE_CENTRAL 5795 if (scanning_stop){ 5796 hci_stack->le_scanning_active = false; 5797 hci_le_scan_stop(); 5798 return true; 5799 } 5800 5801 // 2.3 Periodic Sync 5802 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5803 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5804 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5805 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5806 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5807 return true; 5808 } 5809 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5810 if (periodic_sync_stop){ 5811 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5812 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5813 return true; 5814 } 5815 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5816 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5817 #endif /* ENABLE_LE_CENTRAL */ 5818 5819 // 2.4 Advertising: legacy, extended, periodic 5820 #ifdef ENABLE_LE_PERIPHERAL 5821 if (advertising_stop){ 5822 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5823 if (hci_extended_advertising_supported()) { 5824 uint8_t advertising_stop_handle; 5825 if (advertising_stop_set != NULL){ 5826 advertising_stop_handle = advertising_stop_set->advertising_handle; 5827 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5828 } else { 5829 advertising_stop_handle = 0; 5830 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5831 } 5832 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5833 const uint16_t durations[] = { 0 }; 5834 const uint16_t max_events[] = { 0 }; 5835 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5836 } else 5837 #endif 5838 { 5839 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5840 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5841 } 5842 return true; 5843 } 5844 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5845 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5846 if (periodic_advertising_stop){ 5847 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5848 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5849 return true; 5850 } 5851 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5852 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5853 #endif /* ENABLE_LE_PERIPHERAL */ 5854 5855 5856 // Phase 3: modify 5857 5858 if (random_address_change){ 5859 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5860 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5861 if (hci_extended_advertising_supported()) { 5862 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5863 } 5864 #endif 5865 { 5866 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5867 } 5868 return true; 5869 } 5870 5871 #ifdef ENABLE_LE_CENTRAL 5872 if (hci_stack->le_scanning_param_update){ 5873 hci_stack->le_scanning_param_update = false; 5874 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5875 if (hci_extended_advertising_supported()){ 5876 // prepare arrays for all PHYs 5877 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5878 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5879 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5880 uint8_t scanning_phys = 1; // LE 1M PHY 5881 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5882 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5883 } else 5884 #endif 5885 { 5886 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5887 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5888 } 5889 return true; 5890 } 5891 #endif 5892 5893 #ifdef ENABLE_LE_PERIPHERAL 5894 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5895 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5896 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5897 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5898 if (hci_extended_advertising_supported()){ 5899 // map advertisment type to advertising event properties 5900 uint16_t adv_event_properties = 0; 5901 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5902 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5903 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5904 } 5905 hci_stack->le_advertising_set_in_current_command = 0; 5906 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5907 0, 5908 adv_event_properties, 5909 hci_stack->le_advertisements_interval_min, 5910 hci_stack->le_advertisements_interval_max, 5911 hci_stack->le_advertisements_channel_map, 5912 hci_stack->le_advertisements_own_addr_type, 5913 hci_stack->le_advertisements_direct_address_type, 5914 hci_stack->le_advertisements_direct_address, 5915 hci_stack->le_advertisements_filter_policy, 5916 0x7f, // tx power: no preference 5917 0x01, // primary adv phy: LE 1M 5918 0, // secondary adv max skip 5919 0, // secondary adv phy 5920 0, // adv sid 5921 0 // scan request notification 5922 ); 5923 } 5924 #endif 5925 { 5926 hci_send_cmd(&hci_le_set_advertising_parameters, 5927 hci_stack->le_advertisements_interval_min, 5928 hci_stack->le_advertisements_interval_max, 5929 hci_stack->le_advertisements_type, 5930 hci_stack->le_advertisements_own_addr_type, 5931 hci_stack->le_advertisements_direct_address_type, 5932 hci_stack->le_advertisements_direct_address, 5933 hci_stack->le_advertisements_channel_map, 5934 hci_stack->le_advertisements_filter_policy); 5935 } 5936 return true; 5937 } 5938 5939 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5940 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5941 uint8_t adv_data_clean[31]; 5942 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5943 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5944 hci_stack->le_advertisements_data_len); 5945 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5946 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5947 if (hci_extended_advertising_supported()){ 5948 hci_stack->le_advertising_set_in_current_command = 0; 5949 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5950 } else 5951 #endif 5952 { 5953 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5954 } 5955 return true; 5956 } 5957 5958 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5959 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5960 uint8_t scan_data_clean[31]; 5961 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5962 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5963 hci_stack->le_scan_response_data_len); 5964 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5965 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5966 if (hci_extended_advertising_supported()){ 5967 hci_stack->le_advertising_set_in_current_command = 0; 5968 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5969 } else 5970 #endif 5971 { 5972 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5973 } 5974 return true; 5975 } 5976 5977 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5978 if (hci_extended_advertising_supported()) { 5979 btstack_linked_list_iterator_t it; 5980 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5981 while (btstack_linked_list_iterator_has_next(&it)){ 5982 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5983 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5984 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5985 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5986 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5987 return true; 5988 } 5989 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5990 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5991 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5992 return true; 5993 } 5994 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5995 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5996 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5997 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5998 advertising_set->advertising_handle, 5999 advertising_set->extended_params.advertising_event_properties, 6000 advertising_set->extended_params.primary_advertising_interval_min, 6001 advertising_set->extended_params.primary_advertising_interval_max, 6002 advertising_set->extended_params.primary_advertising_channel_map, 6003 advertising_set->extended_params.own_address_type, 6004 advertising_set->extended_params.peer_address_type, 6005 advertising_set->extended_params.peer_address, 6006 advertising_set->extended_params.advertising_filter_policy, 6007 advertising_set->extended_params.advertising_tx_power, 6008 advertising_set->extended_params.primary_advertising_phy, 6009 advertising_set->extended_params.secondary_advertising_max_skip, 6010 advertising_set->extended_params.secondary_advertising_phy, 6011 advertising_set->extended_params.advertising_sid, 6012 advertising_set->extended_params.scan_request_notification_enable 6013 ); 6014 return true; 6015 } 6016 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6017 uint16_t pos = advertising_set->adv_data_pos; 6018 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6019 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6020 if ((operation & 0x02) != 0){ 6021 // last fragment or complete data 6022 operation |= 2; 6023 advertising_set->adv_data_pos = 0; 6024 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6025 } else { 6026 advertising_set->adv_data_pos += data_to_upload; 6027 } 6028 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6029 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6030 return true; 6031 } 6032 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6033 uint16_t pos = advertising_set->scan_data_pos; 6034 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6035 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6036 if ((operation & 0x02) != 0){ 6037 advertising_set->scan_data_pos = 0; 6038 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6039 } else { 6040 advertising_set->scan_data_pos += data_to_upload; 6041 } 6042 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6043 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6044 return true; 6045 } 6046 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6047 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6048 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6049 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6050 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6051 advertising_set->advertising_handle, 6052 advertising_set->periodic_params.periodic_advertising_interval_min, 6053 advertising_set->periodic_params.periodic_advertising_interval_max, 6054 advertising_set->periodic_params.periodic_advertising_properties); 6055 return true; 6056 } 6057 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6058 uint16_t pos = advertising_set->periodic_data_pos; 6059 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6060 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6061 if ((operation & 0x02) != 0){ 6062 // last fragment or complete data 6063 operation |= 2; 6064 advertising_set->periodic_data_pos = 0; 6065 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6066 } else { 6067 advertising_set->periodic_data_pos += data_to_upload; 6068 } 6069 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6070 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6071 return true; 6072 } 6073 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6074 } 6075 } 6076 #endif 6077 6078 #endif 6079 6080 #ifdef ENABLE_LE_CENTRAL 6081 // if connect with whitelist was active and is not cancelled yet, wait until next time 6082 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6083 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6084 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6085 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6086 #endif 6087 #endif 6088 6089 // LE Whitelist Management 6090 if (whitelist_modification_pending){ 6091 // add/remove entries 6092 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6093 while (btstack_linked_list_iterator_has_next(&lit)){ 6094 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6095 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6096 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6097 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6098 return true; 6099 } 6100 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6101 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6102 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6103 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6104 return true; 6105 } 6106 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6107 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6108 btstack_memory_whitelist_entry_free(entry); 6109 } 6110 } 6111 } 6112 6113 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6114 // LE Resolving List Management 6115 if (resolving_list_supported) { 6116 uint16_t i; 6117 switch (hci_stack->le_resolving_list_state) { 6118 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6119 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6120 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6121 return true; 6122 case LE_RESOLVING_LIST_READ_SIZE: 6123 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6124 hci_send_cmd(&hci_le_read_resolving_list_size); 6125 return true; 6126 case LE_RESOLVING_LIST_SEND_CLEAR: 6127 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6128 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6129 sizeof(hci_stack->le_resolving_list_add_entries)); 6130 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6131 sizeof(hci_stack->le_resolving_list_remove_entries)); 6132 hci_send_cmd(&hci_le_clear_resolving_list); 6133 return true; 6134 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6135 // first remove old entries 6136 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6137 uint8_t offset = i >> 3; 6138 uint8_t mask = 1 << (i & 7); 6139 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6140 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6141 bd_addr_t peer_identity_addreses; 6142 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6143 sm_key_t peer_irk; 6144 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6145 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6146 6147 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6148 // trigger whitelist entry 'update' (work around for controller bug) 6149 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6150 while (btstack_linked_list_iterator_has_next(&lit)) { 6151 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6152 if (entry->address_type != peer_identity_addr_type) continue; 6153 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6154 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6155 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6156 } 6157 #endif 6158 6159 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6160 peer_identity_addreses); 6161 return true; 6162 } 6163 6164 // then add new entries 6165 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6166 uint8_t offset = i >> 3; 6167 uint8_t mask = 1 << (i & 7); 6168 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6169 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6170 bd_addr_t peer_identity_addreses; 6171 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6172 sm_key_t peer_irk; 6173 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6174 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6175 if (btstack_is_null(peer_irk, 16)) continue; 6176 const uint8_t *local_irk = gap_get_persistent_irk(); 6177 // command uses format specifier 'P' that stores 16-byte value without flip 6178 uint8_t local_irk_flipped[16]; 6179 uint8_t peer_irk_flipped[16]; 6180 reverse_128(local_irk, local_irk_flipped); 6181 reverse_128(peer_irk, peer_irk_flipped); 6182 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6183 peer_irk_flipped, local_irk_flipped); 6184 return true; 6185 } 6186 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6187 break; 6188 6189 default: 6190 break; 6191 } 6192 } 6193 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6194 #endif 6195 6196 #ifdef ENABLE_LE_CENTRAL 6197 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6198 // LE Whitelist Management 6199 if (periodic_list_modification_pending){ 6200 // add/remove entries 6201 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6202 while (btstack_linked_list_iterator_has_next(&lit)){ 6203 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6204 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6205 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6206 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6207 return true; 6208 } 6209 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6210 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6211 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6212 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6213 return true; 6214 } 6215 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6216 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6217 btstack_memory_periodic_advertiser_list_entry_free(entry); 6218 } 6219 } 6220 } 6221 #endif 6222 #endif 6223 6224 #ifdef ENABLE_LE_CENTRAL 6225 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6226 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6227 if (hci_stack->le_past_set_default_params){ 6228 hci_stack->le_past_set_default_params = false; 6229 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6230 hci_stack->le_past_mode, 6231 hci_stack->le_past_skip, 6232 hci_stack->le_past_sync_timeout, 6233 hci_stack->le_past_cte_type); 6234 return true; 6235 } 6236 #endif 6237 #endif 6238 #endif 6239 6240 // post-pone all actions until stack is fully working 6241 if (hci_stack->state != HCI_STATE_WORKING) return false; 6242 6243 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6244 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6245 6246 // Phase 4: restore state 6247 6248 #ifdef ENABLE_LE_CENTRAL 6249 // re-start scanning 6250 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6251 hci_stack->le_scanning_active = true; 6252 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6253 if (hci_extended_advertising_supported()){ 6254 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6255 } else 6256 #endif 6257 { 6258 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6259 } 6260 return true; 6261 } 6262 #endif 6263 6264 #ifdef ENABLE_LE_CENTRAL 6265 // re-start connecting 6266 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6267 bd_addr_t null_addr; 6268 memset(null_addr, 0, 6); 6269 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6270 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6271 hci_send_cmd(&hci_le_create_connection, 6272 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 6273 hci_stack->le_connection_scan_window, // scan interval: 30 ms 6274 1, // use whitelist 6275 0, // peer address type 6276 null_addr, // peer bd addr 6277 hci_stack->le_connection_own_addr_type, // our addr type: 6278 hci_stack->le_connection_interval_min, // conn interval min 6279 hci_stack->le_connection_interval_max, // conn interval max 6280 hci_stack->le_connection_latency, // conn latency 6281 hci_stack->le_supervision_timeout, // conn latency 6282 hci_stack->le_minimum_ce_length, // min ce length 6283 hci_stack->le_maximum_ce_length // max ce length 6284 ); 6285 return true; 6286 } 6287 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6288 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6289 switch(hci_stack->le_periodic_sync_request){ 6290 case LE_CONNECTING_DIRECT: 6291 case LE_CONNECTING_WHITELIST: 6292 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6293 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6294 hci_stack->le_periodic_sync_options, 6295 hci_stack->le_periodic_sync_advertising_sid, 6296 hci_stack->le_periodic_sync_advertiser_address_type, 6297 hci_stack->le_periodic_sync_advertiser_address, 6298 hci_stack->le_periodic_sync_skip, 6299 hci_stack->le_periodic_sync_timeout, 6300 hci_stack->le_periodic_sync_cte_type); 6301 return true; 6302 default: 6303 break; 6304 } 6305 } 6306 #endif 6307 #endif 6308 6309 #ifdef ENABLE_LE_PERIPHERAL 6310 // re-start advertising 6311 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6312 // check if advertisements should be enabled given 6313 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6314 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6315 6316 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6317 if (hci_extended_advertising_supported()){ 6318 const uint8_t advertising_handles[] = { 0 }; 6319 const uint16_t durations[] = { 0 }; 6320 const uint16_t max_events[] = { 0 }; 6321 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6322 } else 6323 #endif 6324 { 6325 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6326 } 6327 return true; 6328 } 6329 6330 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6331 if (hci_extended_advertising_supported()) { 6332 btstack_linked_list_iterator_t it; 6333 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6334 while (btstack_linked_list_iterator_has_next(&it)) { 6335 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6336 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6337 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6338 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6339 const uint16_t durations[] = { advertising_set->enable_timeout }; 6340 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6341 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6342 return true; 6343 } 6344 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6345 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6346 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6347 uint8_t enable = 1; 6348 if (advertising_set->periodic_include_adi){ 6349 enable |= 2; 6350 } 6351 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6352 return true; 6353 } 6354 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6355 } 6356 } 6357 #endif 6358 #endif 6359 6360 return false; 6361 } 6362 6363 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6364 static bool hci_run_iso_tasks(void){ 6365 btstack_linked_list_iterator_t it; 6366 6367 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6368 return false; 6369 } 6370 6371 // BIG 6372 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6373 while (btstack_linked_list_iterator_has_next(&it)){ 6374 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6375 switch (big->state){ 6376 case LE_AUDIO_BIG_STATE_CREATE: 6377 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6378 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6379 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6380 hci_send_cmd(&hci_le_create_big, 6381 big->params->big_handle, 6382 big->params->advertising_handle, 6383 big->params->num_bis, 6384 big->params->sdu_interval_us, 6385 big->params->max_sdu, 6386 big->params->max_transport_latency_ms, 6387 big->params->rtn, 6388 big->params->phy, 6389 big->params->packing, 6390 big->params->framing, 6391 big->params->encryption, 6392 big->params->broadcast_code); 6393 return true; 6394 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6395 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6396 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); 6397 return true; 6398 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6399 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6400 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6401 return true; 6402 case LE_AUDIO_BIG_STATE_TERMINATE: 6403 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6404 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6405 return true; 6406 default: 6407 break; 6408 } 6409 } 6410 6411 // BIG Sync 6412 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6413 while (btstack_linked_list_iterator_has_next(&it)){ 6414 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6415 switch (big_sync->state){ 6416 case LE_AUDIO_BIG_STATE_CREATE: 6417 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6418 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6419 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6420 hci_send_cmd(&hci_le_big_create_sync, 6421 big_sync->params->big_handle, 6422 big_sync->params->sync_handle, 6423 big_sync->params->encryption, 6424 big_sync->params->broadcast_code, 6425 big_sync->params->mse, 6426 big_sync->params->big_sync_timeout_10ms, 6427 big_sync->params->num_bis, 6428 big_sync->params->bis_indices); 6429 return true; 6430 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6431 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6432 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); 6433 return true; 6434 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6435 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6436 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6437 return true; 6438 case LE_AUDIO_BIG_STATE_TERMINATE: 6439 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6440 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6441 return true; 6442 default: 6443 break; 6444 } 6445 } 6446 6447 // CIG 6448 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6449 while (btstack_linked_list_iterator_has_next(&it)) { 6450 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6451 uint8_t i; 6452 // Set CIG Parameters 6453 uint8_t cis_id[MAX_NR_CIS]; 6454 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6455 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6456 uint8_t phy_c_to_p[MAX_NR_CIS]; 6457 uint8_t phy_p_to_c[MAX_NR_CIS]; 6458 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6459 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6460 switch (cig->state) { 6461 case LE_AUDIO_CIG_STATE_CREATE: 6462 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6463 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6464 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6465 le_audio_cig_params_t * params = cig->params; 6466 for (i = 0; i < params->num_cis; i++) { 6467 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6468 cis_id[i] = cis_params->cis_id; 6469 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6470 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6471 phy_c_to_p[i] = cis_params->phy_c_to_p; 6472 phy_p_to_c[i] = cis_params->phy_p_to_c; 6473 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6474 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6475 } 6476 hci_send_cmd(&hci_le_set_cig_parameters, 6477 cig->cig_id, 6478 params->sdu_interval_c_to_p, 6479 params->sdu_interval_p_to_c, 6480 params->worst_case_sca, 6481 params->packing, 6482 params->framing, 6483 params->max_transport_latency_c_to_p, 6484 params->max_transport_latency_p_to_c, 6485 params->num_cis, 6486 cis_id, 6487 max_sdu_c_to_p, 6488 max_sdu_p_to_c, 6489 phy_c_to_p, 6490 phy_p_to_c, 6491 rtn_c_to_p, 6492 rtn_p_to_c 6493 ); 6494 return true; 6495 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6496 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6497 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6498 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6499 for (i=0;i<cig->num_cis;i++){ 6500 cig->cis_setup_active[i] = true; 6501 } 6502 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6503 return true; 6504 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6505 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6506 // find next path to setup 6507 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6508 if (cig->cis_established[cis_index] == false) { 6509 continue; 6510 } 6511 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6512 bool setup = true; 6513 if (cis_direction == 0){ 6514 // 0 - input - host to controller 6515 // we are central => central to peripheral 6516 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6517 } else { 6518 // 1 - output - controller to host 6519 // we are central => peripheral to central 6520 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6521 } 6522 if (setup){ 6523 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6524 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6525 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6526 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6527 return true; 6528 } 6529 cig->state_vars.next_cis++; 6530 } 6531 // emit done 6532 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6533 default: 6534 break; 6535 } 6536 } 6537 6538 // CIS Accept/Reject 6539 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6540 while (btstack_linked_list_iterator_has_next(&it)) { 6541 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6542 hci_con_handle_t con_handle; 6543 switch (iso_stream->state){ 6544 case HCI_ISO_STREAM_W2_ACCEPT: 6545 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6546 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6547 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6548 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->con_handle); 6549 return true; 6550 case HCI_ISO_STREAM_W2_REJECT: 6551 con_handle = iso_stream->con_handle; 6552 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6553 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6554 hci_iso_stream_finalize(iso_stream); 6555 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6556 return true; 6557 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6558 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6559 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6560 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6561 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6562 break; 6563 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6564 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6565 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6566 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6567 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6568 break; 6569 default: 6570 break; 6571 } 6572 } 6573 6574 return false; 6575 } 6576 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6577 #endif 6578 6579 static bool hci_run_general_pending_commands(void){ 6580 btstack_linked_item_t * it; 6581 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6582 hci_connection_t * connection = (hci_connection_t *) it; 6583 6584 switch(connection->state){ 6585 case SEND_CREATE_CONNECTION: 6586 switch(connection->address_type){ 6587 #ifdef ENABLE_CLASSIC 6588 case BD_ADDR_TYPE_ACL: 6589 log_info("sending hci_create_connection"); 6590 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6591 break; 6592 #endif 6593 default: 6594 #ifdef ENABLE_BLE 6595 #ifdef ENABLE_LE_CENTRAL 6596 log_info("sending hci_le_create_connection"); 6597 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6598 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6599 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6600 if (hci_extended_advertising_supported()) { 6601 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6602 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6603 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6604 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6605 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6606 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6607 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6608 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6609 hci_send_cmd(&hci_le_extended_create_connection, 6610 0, // don't use whitelist 6611 hci_stack->le_connection_own_addr_type, // our addr type: 6612 connection->address_type, // peer address type 6613 connection->address, // peer bd addr 6614 1, // initiating PHY - 1M 6615 le_connection_scan_interval, // conn scan interval 6616 le_connection_scan_window, // conn scan windows 6617 le_connection_interval_min, // conn interval min 6618 le_connection_interval_max, // conn interval max 6619 le_connection_latency, // conn latency 6620 le_supervision_timeout, // conn latency 6621 le_minimum_ce_length, // min ce length 6622 le_maximum_ce_length // max ce length 6623 ); } 6624 else 6625 #endif 6626 { 6627 hci_send_cmd(&hci_le_create_connection, 6628 hci_stack->le_connection_scan_interval, // conn scan interval 6629 hci_stack->le_connection_scan_window, // conn scan windows 6630 0, // don't use whitelist 6631 connection->address_type, // peer address type 6632 connection->address, // peer bd addr 6633 hci_stack->le_connection_own_addr_type, // our addr type: 6634 hci_stack->le_connection_interval_min, // conn interval min 6635 hci_stack->le_connection_interval_max, // conn interval max 6636 hci_stack->le_connection_latency, // conn latency 6637 hci_stack->le_supervision_timeout, // conn latency 6638 hci_stack->le_minimum_ce_length, // min ce length 6639 hci_stack->le_maximum_ce_length // max ce length 6640 ); 6641 } 6642 connection->state = SENT_CREATE_CONNECTION; 6643 #endif 6644 #endif 6645 break; 6646 } 6647 return true; 6648 6649 #ifdef ENABLE_CLASSIC 6650 case RECEIVED_CONNECTION_REQUEST: 6651 connection->role = HCI_ROLE_SLAVE; 6652 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6653 log_info("sending hci_accept_connection_request"); 6654 connection->state = ACCEPTED_CONNECTION_REQUEST; 6655 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6656 return true; 6657 } 6658 break; 6659 #endif 6660 case SEND_DISCONNECT: 6661 connection->state = SENT_DISCONNECT; 6662 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6663 return true; 6664 6665 default: 6666 break; 6667 } 6668 6669 // no further commands if connection is about to get shut down 6670 if (connection->state == SENT_DISCONNECT) continue; 6671 6672 #ifdef ENABLE_CLASSIC 6673 6674 // Handling link key request requires remote supported features 6675 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6676 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6677 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6678 6679 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6680 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6681 if (have_link_key && security_level_sufficient){ 6682 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6683 } else { 6684 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6685 } 6686 return true; 6687 } 6688 6689 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6690 log_info("denying to pin request"); 6691 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6692 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6693 return true; 6694 } 6695 6696 // security assessment requires remote features 6697 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6698 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6699 hci_ssp_assess_security_on_io_cap_request(connection); 6700 // 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 6701 } 6702 6703 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6704 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6705 // set authentication requirements: 6706 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6707 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6708 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6709 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6710 authreq |= 1; 6711 } 6712 bool bonding = hci_stack->bondable; 6713 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6714 // if we have received IO Cap Response, we're in responder role 6715 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6716 if (bonding && !remote_bonding){ 6717 log_info("Remote not bonding, dropping local flag"); 6718 bonding = false; 6719 } 6720 } 6721 if (bonding){ 6722 if (connection->bonding_flags & BONDING_DEDICATED){ 6723 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6724 } else { 6725 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6726 } 6727 } 6728 uint8_t have_oob_data = 0; 6729 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6730 if (connection->classic_oob_c_192 != NULL){ 6731 have_oob_data |= 1; 6732 } 6733 if (connection->classic_oob_c_256 != NULL){ 6734 have_oob_data |= 2; 6735 } 6736 #endif 6737 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6738 return true; 6739 } 6740 6741 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6742 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6743 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6744 return true; 6745 } 6746 6747 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6748 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6749 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6750 const uint8_t zero[16] = { 0 }; 6751 const uint8_t * r_192 = zero; 6752 const uint8_t * c_192 = zero; 6753 const uint8_t * r_256 = zero; 6754 const uint8_t * c_256 = zero; 6755 // verify P-256 OOB 6756 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6757 c_256 = connection->classic_oob_c_256; 6758 if (connection->classic_oob_r_256 != NULL) { 6759 r_256 = connection->classic_oob_r_256; 6760 } 6761 } 6762 // verify P-192 OOB 6763 if ((connection->classic_oob_c_192 != NULL)) { 6764 c_192 = connection->classic_oob_c_192; 6765 if (connection->classic_oob_r_192 != NULL) { 6766 r_192 = connection->classic_oob_r_192; 6767 } 6768 } 6769 6770 // assess security 6771 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6772 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6773 if (need_level_4 && !can_reach_level_4){ 6774 log_info("Level 4 required, but not possible -> abort"); 6775 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6776 // send oob negative reply 6777 c_256 = NULL; 6778 c_192 = NULL; 6779 } 6780 6781 // Reply 6782 if (c_256 != zero) { 6783 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6784 } else if (c_192 != zero){ 6785 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6786 } else { 6787 hci_stack->classic_oob_con_handle = connection->con_handle; 6788 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6789 } 6790 return true; 6791 } 6792 #endif 6793 6794 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6795 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6796 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6797 return true; 6798 } 6799 6800 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6801 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6802 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6803 return true; 6804 } 6805 6806 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6807 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6808 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6809 return true; 6810 } 6811 6812 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6813 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6814 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6815 connection->state = SENT_DISCONNECT; 6816 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6817 return true; 6818 } 6819 6820 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6821 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6822 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6823 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6824 return true; 6825 } 6826 6827 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6828 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6829 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6830 return true; 6831 } 6832 6833 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6834 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6835 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6836 return true; 6837 } 6838 6839 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6840 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6841 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6842 return true; 6843 } 6844 6845 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6846 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6847 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6848 return true; 6849 } 6850 6851 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6852 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6853 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6854 return true; 6855 } 6856 #endif 6857 6858 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6859 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6860 #ifdef ENABLE_CLASSIC 6861 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6862 #endif 6863 if (connection->state != SENT_DISCONNECT){ 6864 connection->state = SENT_DISCONNECT; 6865 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6866 return true; 6867 } 6868 } 6869 6870 #ifdef ENABLE_CLASSIC 6871 uint16_t sniff_min_interval; 6872 switch (connection->sniff_min_interval){ 6873 case 0: 6874 break; 6875 case 0xffff: 6876 connection->sniff_min_interval = 0; 6877 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6878 return true; 6879 default: 6880 sniff_min_interval = connection->sniff_min_interval; 6881 connection->sniff_min_interval = 0; 6882 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6883 return true; 6884 } 6885 6886 if (connection->sniff_subrating_max_latency != 0xffff){ 6887 uint16_t max_latency = connection->sniff_subrating_max_latency; 6888 connection->sniff_subrating_max_latency = 0; 6889 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6890 return true; 6891 } 6892 6893 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6894 uint8_t service_type = (uint8_t) connection->qos_service_type; 6895 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6896 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); 6897 return true; 6898 } 6899 6900 if (connection->request_role != HCI_ROLE_INVALID){ 6901 hci_role_t role = connection->request_role; 6902 connection->request_role = HCI_ROLE_INVALID; 6903 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6904 return true; 6905 } 6906 #endif 6907 6908 if (connection->gap_connection_tasks != 0){ 6909 #ifdef ENABLE_CLASSIC 6910 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6911 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6912 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6913 return true; 6914 } 6915 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6916 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6917 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6918 return true; 6919 } 6920 #endif 6921 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6922 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6923 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6924 return true; 6925 } 6926 #ifdef ENABLE_BLE 6927 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 6928 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 6929 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 6930 return true; 6931 } 6932 #endif 6933 } 6934 6935 #ifdef ENABLE_BLE 6936 switch (connection->le_con_parameter_update_state){ 6937 // response to L2CAP CON PARAMETER UPDATE REQUEST 6938 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6939 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6940 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6941 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6942 0x0000, 0xffff); 6943 return true; 6944 case CON_PARAMETER_UPDATE_REPLY: 6945 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6946 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6947 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6948 0x0000, 0xffff); 6949 return true; 6950 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6951 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6952 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6953 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6954 return true; 6955 default: 6956 break; 6957 } 6958 if (connection->le_phy_update_all_phys != 0xffu){ 6959 uint8_t all_phys = connection->le_phy_update_all_phys; 6960 connection->le_phy_update_all_phys = 0xff; 6961 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); 6962 return true; 6963 } 6964 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6965 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 6966 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 6967 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 6968 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 6969 return true; 6970 } 6971 #endif 6972 #endif 6973 } 6974 return false; 6975 } 6976 6977 static void hci_run(void){ 6978 6979 // stack state sub statemachines 6980 switch (hci_stack->state) { 6981 case HCI_STATE_INITIALIZING: 6982 hci_initializing_run(); 6983 break; 6984 case HCI_STATE_HALTING: 6985 hci_halting_run(); 6986 break; 6987 case HCI_STATE_FALLING_ASLEEP: 6988 hci_falling_asleep_run(); 6989 break; 6990 default: 6991 break; 6992 } 6993 6994 // allow to run after initialization to working transition 6995 if (hci_stack->state != HCI_STATE_WORKING){ 6996 return; 6997 } 6998 6999 bool done; 7000 7001 // send continuation fragments first, as they block the prepared packet buffer 7002 done = hci_run_acl_fragments(); 7003 if (done) return; 7004 7005 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7006 done = hci_run_iso_fragments(); 7007 if (done) return; 7008 #endif 7009 7010 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7011 // send host num completed packets next as they don't require num_cmd_packets > 0 7012 if (!hci_can_send_comand_packet_transport()) return; 7013 if (hci_stack->host_completed_packets){ 7014 hci_host_num_completed_packets(); 7015 return; 7016 } 7017 #endif 7018 7019 if (!hci_can_send_command_packet_now()) return; 7020 7021 // global/non-connection oriented commands 7022 7023 7024 #ifdef ENABLE_CLASSIC 7025 // general gap classic 7026 done = hci_run_general_gap_classic(); 7027 if (done) return; 7028 #endif 7029 7030 #ifdef ENABLE_BLE 7031 // general gap le 7032 done = hci_run_general_gap_le(); 7033 if (done) return; 7034 7035 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7036 // ISO related tasks, e.g. BIG create/terminate/sync 7037 done = hci_run_iso_tasks(); 7038 if (done) return; 7039 #endif 7040 #endif 7041 7042 // send pending HCI commands 7043 hci_run_general_pending_commands(); 7044 } 7045 7046 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7047 // house-keeping 7048 7049 #ifdef ENABLE_CLASSIC 7050 bd_addr_t addr; 7051 hci_connection_t * conn; 7052 #endif 7053 #ifdef ENABLE_LE_CENTRAL 7054 uint8_t initiator_filter_policy; 7055 #endif 7056 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7057 uint8_t i; 7058 uint8_t num_cis; 7059 hci_con_handle_t cis_handle; 7060 uint8_t status; 7061 #endif 7062 7063 uint16_t opcode = little_endian_read_16(packet, 0); 7064 switch (opcode) { 7065 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7066 hci_stack->loopback_mode = packet[3]; 7067 break; 7068 7069 #ifdef ENABLE_CLASSIC 7070 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7071 reverse_bd_addr(&packet[3], addr); 7072 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7073 7074 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7075 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7076 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7077 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7078 } 7079 7080 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7081 if (!conn) { 7082 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7083 if (!conn) { 7084 // notify client that alloc failed 7085 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7086 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7087 } 7088 conn->state = SEND_CREATE_CONNECTION; 7089 conn->role = HCI_ROLE_MASTER; 7090 } 7091 7092 log_info("conn state %u", conn->state); 7093 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7094 switch (conn->state) { 7095 // if connection active exists 7096 case OPEN: 7097 // and OPEN, emit connection complete command 7098 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7099 // packet not sent to controller 7100 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7101 case RECEIVED_DISCONNECTION_COMPLETE: 7102 // create connection triggered in disconnect complete event, let's do it now 7103 break; 7104 case SEND_CREATE_CONNECTION: 7105 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7106 if (hci_classic_operation_active()){ 7107 return ERROR_CODE_SUCCESS; 7108 } 7109 #endif 7110 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7111 break; 7112 default: 7113 // otherwise, just ignore as it is already in the open process 7114 // packet not sent to controller 7115 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7116 } 7117 conn->state = SENT_CREATE_CONNECTION; 7118 7119 // track outgoing connection 7120 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7121 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7122 break; 7123 7124 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7125 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7126 // setup_synchronous_connection? Voice setting at offset 22 7127 // TODO: compare to current setting if sco connection already active 7128 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7129 break; 7130 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7131 // accept_synchronous_connection? Voice setting at offset 18 7132 // TODO: compare to current setting if sco connection already active 7133 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7134 // track outgoing connection 7135 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7136 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 7137 break; 7138 #endif 7139 #endif 7140 7141 #ifdef ENABLE_BLE 7142 #ifdef ENABLE_LE_CENTRAL 7143 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7144 // white list used? 7145 initiator_filter_policy = packet[7]; 7146 switch (initiator_filter_policy) { 7147 case 0: 7148 // whitelist not used 7149 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7150 break; 7151 case 1: 7152 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7153 break; 7154 default: 7155 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7156 break; 7157 } 7158 // track outgoing connection 7159 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 7160 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7161 break; 7162 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7163 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7164 break; 7165 #endif 7166 #endif /* ENABLE_BLE */ 7167 default: 7168 break; 7169 } 7170 7171 hci_stack->num_cmd_packets--; 7172 7173 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7174 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7175 if (err != 0){ 7176 return ERROR_CODE_HARDWARE_FAILURE; 7177 } 7178 return ERROR_CODE_SUCCESS; 7179 } 7180 7181 // disconnect because of security block 7182 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7183 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7184 if (!connection) return; 7185 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7186 } 7187 7188 7189 // Configure Secure Simple Pairing 7190 7191 #ifdef ENABLE_CLASSIC 7192 7193 // enable will enable SSP during init 7194 void gap_ssp_set_enable(int enable){ 7195 hci_stack->ssp_enable = enable; 7196 } 7197 7198 static int hci_local_ssp_activated(void){ 7199 return gap_ssp_supported() && hci_stack->ssp_enable; 7200 } 7201 7202 // if set, BTstack will respond to io capability request using authentication requirement 7203 void gap_ssp_set_io_capability(int io_capability){ 7204 hci_stack->ssp_io_capability = io_capability; 7205 } 7206 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7207 hci_stack->ssp_authentication_requirement = authentication_requirement; 7208 } 7209 7210 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7211 void gap_ssp_set_auto_accept(int auto_accept){ 7212 hci_stack->ssp_auto_accept = auto_accept; 7213 } 7214 7215 void gap_secure_connections_enable(bool enable){ 7216 hci_stack->secure_connections_enable = enable; 7217 } 7218 bool gap_secure_connections_active(void){ 7219 return hci_stack->secure_connections_active; 7220 } 7221 7222 #endif 7223 7224 // va_list part of hci_send_cmd 7225 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7226 if (!hci_can_send_command_packet_now()){ 7227 log_error("hci_send_cmd called but cannot send packet now"); 7228 return ERROR_CODE_COMMAND_DISALLOWED; 7229 } 7230 7231 // for HCI INITIALIZATION 7232 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7233 hci_stack->last_cmd_opcode = cmd->opcode; 7234 7235 hci_reserve_packet_buffer(); 7236 uint8_t * packet = hci_stack->hci_packet_buffer; 7237 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7238 uint8_t status = hci_send_cmd_packet(packet, size); 7239 7240 // release packet buffer on error or for synchronous transport implementations 7241 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7242 hci_release_packet_buffer(); 7243 hci_emit_transport_packet_sent(); 7244 } 7245 7246 return status; 7247 } 7248 7249 /** 7250 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7251 */ 7252 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7253 va_list argptr; 7254 va_start(argptr, cmd); 7255 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7256 va_end(argptr); 7257 return status; 7258 } 7259 7260 // Create various non-HCI events. 7261 // TODO: generalize, use table similar to hci_create_command 7262 7263 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7264 // dump packet 7265 if (dump) { 7266 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7267 } 7268 7269 // dispatch to all event handlers 7270 btstack_linked_list_iterator_t it; 7271 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7272 while (btstack_linked_list_iterator_has_next(&it)){ 7273 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7274 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7275 } 7276 } 7277 7278 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7279 if (!hci_stack->acl_packet_handler) return; 7280 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7281 } 7282 7283 #ifdef ENABLE_CLASSIC 7284 static void hci_notify_if_sco_can_send_now(void){ 7285 // notify SCO sender if waiting 7286 if (!hci_stack->sco_waiting_for_can_send_now) return; 7287 if (hci_can_send_sco_packet_now()){ 7288 hci_stack->sco_waiting_for_can_send_now = 0; 7289 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7290 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7291 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7292 } 7293 } 7294 7295 // parsing end emitting has been merged to reduce code size 7296 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7297 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7298 7299 uint8_t * eir_data; 7300 ad_context_t context; 7301 const uint8_t * name; 7302 uint8_t name_len; 7303 7304 if (size < 3) return; 7305 7306 int event_type = hci_event_packet_get_type(packet); 7307 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7308 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7309 7310 switch (event_type){ 7311 case HCI_EVENT_INQUIRY_RESULT: 7312 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7313 if (size != (3 + (num_responses * 14))) return; 7314 break; 7315 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7316 if (size != 257) return; 7317 if (num_responses != 1) return; 7318 break; 7319 default: 7320 return; 7321 } 7322 7323 // event[1] is set at the end 7324 int i; 7325 for (i=0; i<num_responses;i++){ 7326 memset(event, 0, sizeof(event)); 7327 event[0] = GAP_EVENT_INQUIRY_RESULT; 7328 uint8_t event_size = 27; // if name is not set by EIR 7329 7330 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7331 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7332 (void)memcpy(&event[9], 7333 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7334 3); // class of device 7335 (void)memcpy(&event[12], 7336 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7337 2); // clock offset 7338 7339 switch (event_type){ 7340 case HCI_EVENT_INQUIRY_RESULT: 7341 // 14,15,16,17 = 0, size 18 7342 break; 7343 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7344 event[14] = 1; 7345 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7346 // 16,17 = 0, size 18 7347 break; 7348 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7349 event[14] = 1; 7350 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7351 // EIR packets only contain a single inquiry response 7352 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7353 name = NULL; 7354 // Iterate over EIR data 7355 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7356 uint8_t data_type = ad_iterator_get_data_type(&context); 7357 uint8_t data_size = ad_iterator_get_data_len(&context); 7358 const uint8_t * data = ad_iterator_get_data(&context); 7359 // Prefer Complete Local Name over Shortened Local Name 7360 switch (data_type){ 7361 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7362 if (name) continue; 7363 /* fall through */ 7364 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7365 name = data; 7366 name_len = data_size; 7367 break; 7368 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7369 if (data_size != 8) break; 7370 event[16] = 1; 7371 memcpy(&event[17], data, 8); 7372 break; 7373 default: 7374 break; 7375 } 7376 } 7377 if (name){ 7378 event[25] = 1; 7379 // truncate name if needed 7380 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7381 event[26] = len; 7382 (void)memcpy(&event[27], name, len); 7383 event_size += len; 7384 } 7385 break; 7386 default: 7387 return; 7388 } 7389 event[1] = event_size - 2; 7390 hci_emit_event(event, event_size, 1); 7391 } 7392 } 7393 #endif 7394 7395 void hci_emit_state(void){ 7396 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7397 uint8_t event[3]; 7398 event[0] = BTSTACK_EVENT_STATE; 7399 event[1] = sizeof(event) - 2u; 7400 event[2] = hci_stack->state; 7401 hci_emit_event(event, sizeof(event), 1); 7402 } 7403 7404 #ifdef ENABLE_CLASSIC 7405 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7406 uint8_t event[13]; 7407 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7408 event[1] = sizeof(event) - 2; 7409 event[2] = status; 7410 little_endian_store_16(event, 3, con_handle); 7411 reverse_bd_addr(address, &event[5]); 7412 event[11] = 1; // ACL connection 7413 event[12] = 0; // encryption disabled 7414 hci_emit_event(event, sizeof(event), 1); 7415 } 7416 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7417 if (disable_l2cap_timeouts) return; 7418 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7419 uint8_t event[4]; 7420 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7421 event[1] = sizeof(event) - 2; 7422 little_endian_store_16(event, 2, conn->con_handle); 7423 hci_emit_event(event, sizeof(event), 1); 7424 } 7425 #endif 7426 7427 #ifdef ENABLE_BLE 7428 #ifdef ENABLE_LE_CENTRAL 7429 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){ 7430 uint8_t event[21]; 7431 event[0] = HCI_EVENT_LE_META; 7432 event[1] = sizeof(event) - 2u; 7433 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7434 event[3] = status; 7435 little_endian_store_16(event, 4, con_handle); 7436 event[6] = 0; // TODO: role 7437 event[7] = address_type; 7438 reverse_bd_addr(address, &event[8]); 7439 little_endian_store_16(event, 14, 0); // interval 7440 little_endian_store_16(event, 16, 0); // latency 7441 little_endian_store_16(event, 18, 0); // supervision timeout 7442 event[20] = 0; // master clock accuracy 7443 hci_emit_event(event, sizeof(event), 1); 7444 } 7445 #endif 7446 #endif 7447 7448 static void hci_emit_transport_packet_sent(void){ 7449 // notify upper stack that it might be possible to send again 7450 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7451 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7452 } 7453 7454 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7455 uint8_t event[6]; 7456 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7457 event[1] = sizeof(event) - 2u; 7458 event[2] = 0; // status = OK 7459 little_endian_store_16(event, 3, con_handle); 7460 event[5] = reason; 7461 hci_emit_event(event, sizeof(event), 1); 7462 } 7463 7464 static void hci_emit_nr_connections_changed(void){ 7465 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7466 uint8_t event[3]; 7467 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7468 event[1] = sizeof(event) - 2u; 7469 event[2] = nr_hci_connections(); 7470 hci_emit_event(event, sizeof(event), 1); 7471 } 7472 7473 static void hci_emit_hci_open_failed(void){ 7474 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7475 uint8_t event[2]; 7476 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7477 event[1] = sizeof(event) - 2u; 7478 hci_emit_event(event, sizeof(event), 1); 7479 } 7480 7481 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7482 log_info("hci_emit_dedicated_bonding_result %u ", status); 7483 uint8_t event[9]; 7484 int pos = 0; 7485 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7486 event[pos++] = sizeof(event) - 2u; 7487 event[pos++] = status; 7488 reverse_bd_addr(address, &event[pos]); 7489 hci_emit_event(event, sizeof(event), 1); 7490 } 7491 7492 7493 #ifdef ENABLE_CLASSIC 7494 7495 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7496 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7497 uint8_t event[5]; 7498 int pos = 0; 7499 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7500 event[pos++] = sizeof(event) - 2; 7501 little_endian_store_16(event, 2, con_handle); 7502 pos += 2; 7503 event[pos++] = level; 7504 hci_emit_event(event, sizeof(event), 1); 7505 } 7506 7507 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7508 if (!connection) return LEVEL_0; 7509 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7510 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7511 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7512 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7513 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7514 // LEVEL 4 always requires 128 bit encrytion key size 7515 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7516 security_level = LEVEL_3; 7517 } 7518 return security_level; 7519 } 7520 7521 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7522 uint8_t event[4]; 7523 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7524 event[1] = sizeof(event) - 2; 7525 event[2] = discoverable; 7526 event[3] = connectable; 7527 hci_emit_event(event, sizeof(event), 1); 7528 } 7529 7530 // query if remote side supports eSCO 7531 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7532 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7533 if (!connection) return false; 7534 return (connection->remote_supported_features[0] & 1) != 0; 7535 } 7536 7537 static bool hci_ssp_supported(hci_connection_t * connection){ 7538 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7539 return (connection->bonding_flags & mask) == mask; 7540 } 7541 7542 // query if remote side supports SSP 7543 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7544 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7545 if (!connection) return false; 7546 return hci_ssp_supported(connection) ? 1 : 0; 7547 } 7548 7549 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7550 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7551 } 7552 7553 /** 7554 * Check if remote supported features query has completed 7555 */ 7556 bool hci_remote_features_available(hci_con_handle_t handle){ 7557 hci_connection_t * connection = hci_connection_for_handle(handle); 7558 if (!connection) return false; 7559 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7560 } 7561 7562 /** 7563 * Trigger remote supported features query 7564 */ 7565 7566 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7567 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7568 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7569 } 7570 } 7571 7572 void hci_remote_features_query(hci_con_handle_t con_handle){ 7573 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7574 if (!connection) return; 7575 hci_trigger_remote_features_for_connection(connection); 7576 hci_run(); 7577 } 7578 7579 // GAP API 7580 /** 7581 * @bbrief enable/disable bonding. default is enabled 7582 * @praram enabled 7583 */ 7584 void gap_set_bondable_mode(int enable){ 7585 hci_stack->bondable = enable ? 1 : 0; 7586 } 7587 /** 7588 * @brief Get bondable mode. 7589 * @return 1 if bondable 7590 */ 7591 int gap_get_bondable_mode(void){ 7592 return hci_stack->bondable; 7593 } 7594 7595 /** 7596 * @brief map link keys to security levels 7597 */ 7598 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7599 switch (link_key_type){ 7600 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7601 return LEVEL_4; 7602 case COMBINATION_KEY: 7603 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7604 return LEVEL_3; 7605 default: 7606 return LEVEL_2; 7607 } 7608 } 7609 7610 /** 7611 * @brief map link keys to secure connection yes/no 7612 */ 7613 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7614 switch (link_key_type){ 7615 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7616 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7617 return true; 7618 default: 7619 return false; 7620 } 7621 } 7622 7623 /** 7624 * @brief map link keys to authenticated 7625 */ 7626 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7627 switch (link_key_type){ 7628 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7629 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7630 return true; 7631 default: 7632 return false; 7633 } 7634 } 7635 7636 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7637 log_info("gap_mitm_protection_required_for_security_level %u", level); 7638 return level > LEVEL_2; 7639 } 7640 7641 /** 7642 * @brief get current security level 7643 */ 7644 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7645 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7646 if (!connection) return LEVEL_0; 7647 return gap_security_level_for_connection(connection); 7648 } 7649 7650 /** 7651 * @brief request connection to device to 7652 * @result GAP_AUTHENTICATION_RESULT 7653 */ 7654 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7655 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7656 if (!connection){ 7657 hci_emit_security_level(con_handle, LEVEL_0); 7658 return; 7659 } 7660 7661 btstack_assert(hci_is_le_connection(connection) == false); 7662 7663 // 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) 7664 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7665 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7666 requested_level = LEVEL_4; 7667 } 7668 7669 gap_security_level_t current_level = gap_security_level(con_handle); 7670 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7671 requested_level, connection->requested_security_level, current_level); 7672 7673 // authentication active if authentication request was sent or planned level > 0 7674 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7675 if (authentication_active){ 7676 // authentication already active 7677 if (connection->requested_security_level < requested_level){ 7678 // increase requested level as new level is higher 7679 // TODO: handle re-authentication when done 7680 connection->requested_security_level = requested_level; 7681 } 7682 } else { 7683 // no request active, notify if security sufficient 7684 if (requested_level <= current_level){ 7685 hci_emit_security_level(con_handle, current_level); 7686 return; 7687 } 7688 7689 // store request 7690 connection->requested_security_level = requested_level; 7691 7692 // start to authenticate connection 7693 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7694 7695 // request remote features if not already active, also trigger hci_run 7696 hci_remote_features_query(con_handle); 7697 } 7698 } 7699 7700 /** 7701 * @brief start dedicated bonding with device. disconnect after bonding 7702 * @param device 7703 * @param request MITM protection 7704 * @result GAP_DEDICATED_BONDING_COMPLETE 7705 */ 7706 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7707 7708 // create connection state machine 7709 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7710 7711 if (!connection){ 7712 return BTSTACK_MEMORY_ALLOC_FAILED; 7713 } 7714 7715 // delete linkn key 7716 gap_drop_link_key_for_bd_addr(device); 7717 7718 // configure LEVEL_2/3, dedicated bonding 7719 connection->state = SEND_CREATE_CONNECTION; 7720 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7721 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7722 connection->bonding_flags = BONDING_DEDICATED; 7723 7724 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7725 7726 // handle: connnection failure (connection complete != ok) 7727 // handle: authentication failure 7728 // handle: disconnect on done 7729 7730 hci_run(); 7731 7732 return 0; 7733 } 7734 7735 void gap_set_local_name(const char * local_name){ 7736 hci_stack->local_name = local_name; 7737 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7738 // also update EIR if not set by user 7739 if (hci_stack->eir_data == NULL){ 7740 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7741 } 7742 hci_run(); 7743 } 7744 #endif 7745 7746 7747 #ifdef ENABLE_BLE 7748 7749 #ifdef ENABLE_LE_CENTRAL 7750 void gap_start_scan(void){ 7751 hci_stack->le_scanning_enabled = true; 7752 hci_run(); 7753 } 7754 7755 void gap_stop_scan(void){ 7756 hci_stack->le_scanning_enabled = false; 7757 hci_run(); 7758 } 7759 7760 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7761 hci_stack->le_scan_type = scan_type; 7762 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7763 hci_stack->le_scan_interval = scan_interval; 7764 hci_stack->le_scan_window = scan_window; 7765 hci_stack->le_scanning_param_update = true; 7766 hci_run(); 7767 } 7768 7769 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7770 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7771 } 7772 7773 void gap_set_scan_duplicate_filter(bool enabled){ 7774 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 7775 } 7776 7777 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7778 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7779 if (!conn){ 7780 // disallow if le connection is already outgoing 7781 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7782 log_error("le connection already active"); 7783 return ERROR_CODE_COMMAND_DISALLOWED; 7784 } 7785 7786 log_info("gap_connect: no connection exists yet, creating context"); 7787 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7788 if (!conn){ 7789 // notify client that alloc failed 7790 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7791 log_info("gap_connect: failed to alloc hci_connection_t"); 7792 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7793 } 7794 7795 // set le connecting state 7796 if (hci_is_le_connection_type(addr_type)){ 7797 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7798 } 7799 7800 conn->state = SEND_CREATE_CONNECTION; 7801 log_info("gap_connect: send create connection next"); 7802 hci_run(); 7803 return ERROR_CODE_SUCCESS; 7804 } 7805 7806 if (!hci_is_le_connection(conn) || 7807 (conn->state == SEND_CREATE_CONNECTION) || 7808 (conn->state == SENT_CREATE_CONNECTION)) { 7809 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7810 log_error("gap_connect: classic connection or connect is already being created"); 7811 return GATT_CLIENT_IN_WRONG_STATE; 7812 } 7813 7814 // check if connection was just disconnected 7815 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7816 log_info("gap_connect: send create connection (again)"); 7817 conn->state = SEND_CREATE_CONNECTION; 7818 hci_run(); 7819 return ERROR_CODE_SUCCESS; 7820 } 7821 7822 log_info("gap_connect: context exists with state %u", conn->state); 7823 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7824 hci_run(); 7825 return ERROR_CODE_SUCCESS; 7826 } 7827 7828 // @assumption: only a single outgoing LE Connection exists 7829 static hci_connection_t * gap_get_outgoing_connection(void){ 7830 btstack_linked_item_t *it; 7831 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7832 hci_connection_t * conn = (hci_connection_t *) it; 7833 if (!hci_is_le_connection(conn)) continue; 7834 switch (conn->state){ 7835 case SEND_CREATE_CONNECTION: 7836 case SENT_CREATE_CONNECTION: 7837 return conn; 7838 default: 7839 break; 7840 }; 7841 } 7842 return NULL; 7843 } 7844 7845 uint8_t gap_connect_cancel(void){ 7846 hci_connection_t * conn; 7847 switch (hci_stack->le_connecting_request){ 7848 case LE_CONNECTING_IDLE: 7849 break; 7850 case LE_CONNECTING_WHITELIST: 7851 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7852 hci_run(); 7853 break; 7854 case LE_CONNECTING_DIRECT: 7855 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7856 conn = gap_get_outgoing_connection(); 7857 if (conn == NULL){ 7858 hci_run(); 7859 } else { 7860 switch (conn->state){ 7861 case SEND_CREATE_CONNECTION: 7862 // skip sending create connection and emit event instead 7863 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7864 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7865 btstack_memory_hci_connection_free( conn ); 7866 break; 7867 case SENT_CREATE_CONNECTION: 7868 // let hci_run_general_gap_le cancel outgoing connection 7869 hci_run(); 7870 break; 7871 default: 7872 break; 7873 } 7874 } 7875 break; 7876 default: 7877 btstack_unreachable(); 7878 break; 7879 } 7880 return ERROR_CODE_SUCCESS; 7881 } 7882 7883 /** 7884 * @brief Set connection parameters for outgoing connections 7885 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7886 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7887 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7888 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7889 * @param conn_latency, default: 4 7890 * @param supervision_timeout (unit: 10ms), default: 720 ms 7891 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7892 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7893 */ 7894 7895 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7896 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7897 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7898 hci_stack->le_connection_scan_interval = conn_scan_interval; 7899 hci_stack->le_connection_scan_window = conn_scan_window; 7900 hci_stack->le_connection_interval_min = conn_interval_min; 7901 hci_stack->le_connection_interval_max = conn_interval_max; 7902 hci_stack->le_connection_latency = conn_latency; 7903 hci_stack->le_supervision_timeout = supervision_timeout; 7904 hci_stack->le_minimum_ce_length = min_ce_length; 7905 hci_stack->le_maximum_ce_length = max_ce_length; 7906 } 7907 #endif 7908 7909 /** 7910 * @brief Updates the connection parameters for a given LE connection 7911 * @param handle 7912 * @param conn_interval_min (unit: 1.25ms) 7913 * @param conn_interval_max (unit: 1.25ms) 7914 * @param conn_latency 7915 * @param supervision_timeout (unit: 10ms) 7916 * @return 0 if ok 7917 */ 7918 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7919 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7920 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7921 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7922 connection->le_conn_interval_min = conn_interval_min; 7923 connection->le_conn_interval_max = conn_interval_max; 7924 connection->le_conn_latency = conn_latency; 7925 connection->le_supervision_timeout = supervision_timeout; 7926 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7927 hci_run(); 7928 return 0; 7929 } 7930 7931 /** 7932 * @brief Request an update of the connection parameter for a given LE connection 7933 * @param handle 7934 * @param conn_interval_min (unit: 1.25ms) 7935 * @param conn_interval_max (unit: 1.25ms) 7936 * @param conn_latency 7937 * @param supervision_timeout (unit: 10ms) 7938 * @return 0 if ok 7939 */ 7940 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7941 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7942 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7943 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7944 connection->le_conn_interval_min = conn_interval_min; 7945 connection->le_conn_interval_max = conn_interval_max; 7946 connection->le_conn_latency = conn_latency; 7947 connection->le_supervision_timeout = supervision_timeout; 7948 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7949 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7950 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7951 return 0; 7952 } 7953 7954 #ifdef ENABLE_LE_PERIPHERAL 7955 7956 /** 7957 * @brief Set Advertisement Data 7958 * @param advertising_data_length 7959 * @param advertising_data (max 31 octets) 7960 * @note data is not copied, pointer has to stay valid 7961 */ 7962 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7963 hci_stack->le_advertisements_data_len = advertising_data_length; 7964 hci_stack->le_advertisements_data = advertising_data; 7965 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7966 hci_run(); 7967 } 7968 7969 /** 7970 * @brief Set Scan Response Data 7971 * @param advertising_data_length 7972 * @param advertising_data (max 31 octets) 7973 * @note data is not copied, pointer has to stay valid 7974 */ 7975 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7976 hci_stack->le_scan_response_data_len = scan_response_data_length; 7977 hci_stack->le_scan_response_data = scan_response_data; 7978 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7979 hci_run(); 7980 } 7981 7982 /** 7983 * @brief Set Advertisement Parameters 7984 * @param adv_int_min 7985 * @param adv_int_max 7986 * @param adv_type 7987 * @param direct_address_type 7988 * @param direct_address 7989 * @param channel_map 7990 * @param filter_policy 7991 * 7992 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7993 */ 7994 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7995 uint8_t direct_address_typ, bd_addr_t direct_address, 7996 uint8_t channel_map, uint8_t filter_policy) { 7997 7998 hci_stack->le_advertisements_interval_min = adv_int_min; 7999 hci_stack->le_advertisements_interval_max = adv_int_max; 8000 hci_stack->le_advertisements_type = adv_type; 8001 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8002 hci_stack->le_advertisements_channel_map = channel_map; 8003 hci_stack->le_advertisements_filter_policy = filter_policy; 8004 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8005 6); 8006 8007 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8008 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8009 hci_run(); 8010 } 8011 8012 /** 8013 * @brief Enable/Disable Advertisements 8014 * @param enabled 8015 */ 8016 void gap_advertisements_enable(int enabled){ 8017 if (enabled == 0){ 8018 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8019 } else { 8020 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8021 } 8022 hci_update_advertisements_enabled_for_current_roles(); 8023 hci_run(); 8024 } 8025 8026 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8027 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8028 btstack_linked_list_iterator_t it; 8029 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8030 while (btstack_linked_list_iterator_has_next(&it)){ 8031 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8032 if ( item->advertising_handle == advertising_handle ) { 8033 return item; 8034 } 8035 } 8036 return NULL; 8037 } 8038 8039 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8040 // find free advertisement handle 8041 uint8_t advertisement_handle; 8042 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8043 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8044 } 8045 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8046 // clear 8047 memset(storage, 0, sizeof(le_advertising_set_t)); 8048 // copy params 8049 storage->advertising_handle = advertisement_handle; 8050 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8051 // add to list 8052 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8053 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8054 *out_advertising_handle = advertisement_handle; 8055 // set tasks and start 8056 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8057 hci_run(); 8058 return ERROR_CODE_SUCCESS; 8059 } 8060 8061 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8062 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8063 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8064 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8065 // set tasks and start 8066 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8067 hci_run(); 8068 return ERROR_CODE_SUCCESS; 8069 } 8070 8071 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8072 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8073 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8074 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8075 return ERROR_CODE_SUCCESS; 8076 } 8077 8078 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8079 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8080 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8081 memcpy(advertising_set->random_address, random_address, 6); 8082 // set tasks and start 8083 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8084 hci_run(); 8085 return ERROR_CODE_SUCCESS; 8086 } 8087 8088 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8089 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8090 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8091 advertising_set->adv_data = advertising_data; 8092 advertising_set->adv_data_len = advertising_data_length; 8093 // set tasks and start 8094 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8095 hci_run(); 8096 return ERROR_CODE_SUCCESS; 8097 } 8098 8099 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){ 8100 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8101 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8102 advertising_set->scan_data = scan_response_data; 8103 advertising_set->scan_data_len = scan_response_data_length; 8104 // set tasks and start 8105 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8106 hci_run(); 8107 return ERROR_CODE_SUCCESS; 8108 } 8109 8110 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8111 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8112 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8113 advertising_set->enable_timeout = timeout; 8114 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8115 // set tasks and start 8116 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8117 hci_run(); 8118 return ERROR_CODE_SUCCESS; 8119 } 8120 8121 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8122 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8123 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8124 // set tasks and start 8125 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8126 hci_run(); 8127 return ERROR_CODE_SUCCESS; 8128 } 8129 8130 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8131 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8132 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8133 // set tasks and start 8134 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8135 hci_run(); 8136 return ERROR_CODE_SUCCESS; 8137 } 8138 8139 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8140 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8141 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8142 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8143 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8144 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8145 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8146 // set tasks and start 8147 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8148 hci_run(); 8149 return ERROR_CODE_SUCCESS; 8150 } 8151 8152 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8153 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8154 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8155 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8156 return ERROR_CODE_SUCCESS; 8157 } 8158 8159 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8160 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8161 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8162 advertising_set->periodic_data = periodic_data; 8163 advertising_set->periodic_data_len = periodic_data_length; 8164 // set tasks and start 8165 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8166 hci_run(); 8167 return ERROR_CODE_SUCCESS; 8168 } 8169 8170 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8171 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8172 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8173 // set tasks and start 8174 advertising_set->periodic_include_adi = include_adi; 8175 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8176 hci_run(); 8177 return ERROR_CODE_SUCCESS; 8178 } 8179 8180 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8181 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8182 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8183 // set tasks and start 8184 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8185 hci_run(); 8186 return ERROR_CODE_SUCCESS; 8187 } 8188 8189 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8190 hci_stack->le_past_mode = mode; 8191 hci_stack->le_past_skip = skip; 8192 hci_stack->le_past_sync_timeout = sync_timeout; 8193 hci_stack->le_past_cte_type = cte_type; 8194 hci_stack->le_past_set_default_params = true; 8195 hci_run(); 8196 return ERROR_CODE_SUCCESS; 8197 } 8198 8199 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8200 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8201 if (hci_connection == NULL){ 8202 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8203 } 8204 hci_connection->le_past_sync_handle = sync_handle; 8205 hci_connection->le_past_service_data = service_data; 8206 hci_run(); 8207 return ERROR_CODE_SUCCESS; 8208 } 8209 8210 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8211 8212 #endif 8213 8214 #endif 8215 8216 void hci_le_set_own_address_type(uint8_t own_address_type){ 8217 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8218 if (own_address_type == hci_stack->le_own_addr_type) return; 8219 hci_stack->le_own_addr_type = own_address_type; 8220 8221 #ifdef ENABLE_LE_PERIPHERAL 8222 // update advertisement parameters, too 8223 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8224 hci_run(); 8225 #endif 8226 #ifdef ENABLE_LE_CENTRAL 8227 // note: we don't update scan parameters or modify ongoing connection attempts 8228 #endif 8229 } 8230 8231 void hci_le_random_address_set(const bd_addr_t random_address){ 8232 memcpy(hci_stack->le_random_address, random_address, 6); 8233 hci_stack->le_random_address_set = true; 8234 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8235 hci_run(); 8236 } 8237 8238 #endif 8239 8240 uint8_t gap_disconnect(hci_con_handle_t handle){ 8241 hci_connection_t * conn = hci_connection_for_handle(handle); 8242 if (!conn){ 8243 hci_emit_disconnection_complete(handle, 0); 8244 return 0; 8245 } 8246 // ignore if already disconnected 8247 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8248 return 0; 8249 } 8250 conn->state = SEND_DISCONNECT; 8251 hci_run(); 8252 return 0; 8253 } 8254 8255 int gap_read_rssi(hci_con_handle_t con_handle){ 8256 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8257 if (hci_connection == NULL) return 0; 8258 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8259 hci_run(); 8260 return 1; 8261 } 8262 8263 /** 8264 * @brief Get connection type 8265 * @param con_handle 8266 * @result connection_type 8267 */ 8268 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8269 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8270 if (!conn) return GAP_CONNECTION_INVALID; 8271 switch (conn->address_type){ 8272 case BD_ADDR_TYPE_LE_PUBLIC: 8273 case BD_ADDR_TYPE_LE_RANDOM: 8274 return GAP_CONNECTION_LE; 8275 case BD_ADDR_TYPE_SCO: 8276 return GAP_CONNECTION_SCO; 8277 case BD_ADDR_TYPE_ACL: 8278 return GAP_CONNECTION_ACL; 8279 default: 8280 return GAP_CONNECTION_INVALID; 8281 } 8282 } 8283 8284 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8285 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8286 if (!conn) return HCI_ROLE_INVALID; 8287 return (hci_role_t) conn->role; 8288 } 8289 8290 8291 #ifdef ENABLE_CLASSIC 8292 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8293 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8294 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8295 conn->request_role = role; 8296 hci_run(); 8297 return ERROR_CODE_SUCCESS; 8298 } 8299 #endif 8300 8301 #ifdef ENABLE_BLE 8302 8303 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){ 8304 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8305 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8306 8307 conn->le_phy_update_all_phys = all_phys; 8308 conn->le_phy_update_tx_phys = tx_phys; 8309 conn->le_phy_update_rx_phys = rx_phys; 8310 conn->le_phy_update_phy_options = phy_options; 8311 8312 hci_run(); 8313 8314 return 0; 8315 } 8316 8317 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8318 // check if already in list 8319 btstack_linked_list_iterator_t it; 8320 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8321 while (btstack_linked_list_iterator_has_next(&it)) { 8322 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8323 if (entry->address_type != address_type) { 8324 continue; 8325 } 8326 if (memcmp(entry->address, address, 6) != 0) { 8327 continue; 8328 } 8329 // disallow if already scheduled to add 8330 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8331 return ERROR_CODE_COMMAND_DISALLOWED; 8332 } 8333 // still on controller, but scheduled to remove -> re-add 8334 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8335 return ERROR_CODE_SUCCESS; 8336 } 8337 // alloc and add to list 8338 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8339 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8340 entry->address_type = address_type; 8341 (void)memcpy(entry->address, address, 6); 8342 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8343 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8344 return ERROR_CODE_SUCCESS; 8345 } 8346 8347 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8348 btstack_linked_list_iterator_t it; 8349 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8350 while (btstack_linked_list_iterator_has_next(&it)){ 8351 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8352 if (entry->address_type != address_type) { 8353 continue; 8354 } 8355 if (memcmp(entry->address, address, 6) != 0) { 8356 continue; 8357 } 8358 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8359 // remove from controller if already present 8360 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8361 } else { 8362 // directly remove entry from whitelist 8363 btstack_linked_list_iterator_remove(&it); 8364 btstack_memory_whitelist_entry_free(entry); 8365 } 8366 return ERROR_CODE_SUCCESS; 8367 } 8368 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8369 } 8370 8371 static void hci_whitelist_clear(void){ 8372 btstack_linked_list_iterator_t it; 8373 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8374 while (btstack_linked_list_iterator_has_next(&it)){ 8375 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8376 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8377 // remove from controller if already present 8378 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8379 continue; 8380 } 8381 // directly remove entry from whitelist 8382 btstack_linked_list_iterator_remove(&it); 8383 btstack_memory_whitelist_entry_free(entry); 8384 } 8385 } 8386 8387 // free all entries unconditionally 8388 static void hci_whitelist_free(void){ 8389 btstack_linked_list_iterator_t lit; 8390 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 8391 while (btstack_linked_list_iterator_has_next(&lit)){ 8392 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 8393 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 8394 btstack_memory_whitelist_entry_free(entry); 8395 } 8396 } 8397 8398 /** 8399 * @brief Clear Whitelist 8400 * @return 0 if ok 8401 */ 8402 uint8_t gap_whitelist_clear(void){ 8403 hci_whitelist_clear(); 8404 hci_run(); 8405 return ERROR_CODE_SUCCESS; 8406 } 8407 8408 /** 8409 * @brief Add Device to Whitelist 8410 * @param address_typ 8411 * @param address 8412 * @return 0 if ok 8413 */ 8414 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8415 uint8_t status = hci_whitelist_add(address_type, address); 8416 if (status){ 8417 return status; 8418 } 8419 hci_run(); 8420 return ERROR_CODE_SUCCESS; 8421 } 8422 8423 /** 8424 * @brief Remove Device from Whitelist 8425 * @param address_typ 8426 * @param address 8427 * @return 0 if ok 8428 */ 8429 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8430 uint8_t status = hci_whitelist_remove(address_type, address); 8431 if (status){ 8432 return status; 8433 } 8434 hci_run(); 8435 return ERROR_CODE_SUCCESS; 8436 } 8437 8438 #ifdef ENABLE_LE_CENTRAL 8439 /** 8440 * @brief Connect with Whitelist 8441 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8442 * @return - if ok 8443 */ 8444 uint8_t gap_connect_with_whitelist(void){ 8445 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8446 return ERROR_CODE_COMMAND_DISALLOWED; 8447 } 8448 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8449 hci_run(); 8450 return ERROR_CODE_SUCCESS; 8451 } 8452 8453 /** 8454 * @brief Auto Connection Establishment - Start Connecting to device 8455 * @param address_typ 8456 * @param address 8457 * @return 0 if ok 8458 */ 8459 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8460 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8461 return ERROR_CODE_COMMAND_DISALLOWED; 8462 } 8463 8464 uint8_t status = hci_whitelist_add(address_type, address); 8465 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8466 return status; 8467 } 8468 8469 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8470 8471 hci_run(); 8472 return ERROR_CODE_SUCCESS; 8473 } 8474 8475 /** 8476 * @brief Auto Connection Establishment - Stop Connecting to device 8477 * @param address_typ 8478 * @param address 8479 * @return 0 if ok 8480 */ 8481 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8482 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8483 return ERROR_CODE_COMMAND_DISALLOWED; 8484 } 8485 8486 hci_whitelist_remove(address_type, address); 8487 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8488 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8489 } 8490 hci_run(); 8491 return 0; 8492 } 8493 8494 /** 8495 * @brief Auto Connection Establishment - Stop everything 8496 * @note Convenience function to stop all active auto connection attempts 8497 */ 8498 uint8_t gap_auto_connection_stop_all(void){ 8499 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8500 return ERROR_CODE_COMMAND_DISALLOWED; 8501 } 8502 hci_whitelist_clear(); 8503 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8504 hci_run(); 8505 return ERROR_CODE_SUCCESS; 8506 } 8507 8508 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8509 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8510 if (!conn) return 0; 8511 return conn->le_connection_interval; 8512 } 8513 #endif 8514 #endif 8515 8516 #ifdef ENABLE_CLASSIC 8517 /** 8518 * @brief Set Extended Inquiry Response data 8519 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8520 * @note has to be done before stack starts up 8521 */ 8522 void gap_set_extended_inquiry_response(const uint8_t * data){ 8523 hci_stack->eir_data = data; 8524 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8525 hci_run(); 8526 } 8527 8528 /** 8529 * @brief Start GAP Classic Inquiry 8530 * @param duration in 1.28s units 8531 * @return 0 if ok 8532 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8533 */ 8534 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8535 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8536 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8537 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8538 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8539 } 8540 hci_stack->inquiry_state = duration_in_1280ms_units; 8541 hci_stack->inquiry_max_period_length = 0; 8542 hci_stack->inquiry_min_period_length = 0; 8543 hci_run(); 8544 return 0; 8545 } 8546 8547 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8548 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8549 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8550 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8551 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8552 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8553 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8554 8555 hci_stack->inquiry_state = duration; 8556 hci_stack->inquiry_max_period_length = max_period_length; 8557 hci_stack->inquiry_min_period_length = min_period_length; 8558 hci_run(); 8559 return 0; 8560 } 8561 8562 /** 8563 * @brief Stop GAP Classic Inquiry 8564 * @return 0 if ok 8565 */ 8566 int gap_inquiry_stop(void){ 8567 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8568 // emit inquiry complete event, before it even started 8569 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8570 hci_emit_event(event, sizeof(event), 1); 8571 return 0; 8572 } 8573 switch (hci_stack->inquiry_state){ 8574 case GAP_INQUIRY_STATE_ACTIVE: 8575 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8576 hci_run(); 8577 return ERROR_CODE_SUCCESS; 8578 case GAP_INQUIRY_STATE_PERIODIC: 8579 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8580 hci_run(); 8581 return ERROR_CODE_SUCCESS; 8582 default: 8583 return ERROR_CODE_COMMAND_DISALLOWED; 8584 } 8585 } 8586 8587 void gap_inquiry_set_lap(uint32_t lap){ 8588 hci_stack->inquiry_lap = lap; 8589 } 8590 8591 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8592 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8593 hci_stack->inquiry_scan_window = inquiry_scan_window; 8594 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8595 hci_run(); 8596 } 8597 8598 8599 /** 8600 * @brief Remote Name Request 8601 * @param addr 8602 * @param page_scan_repetition_mode 8603 * @param clock_offset only used when bit 15 is set 8604 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8605 */ 8606 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8607 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8608 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8609 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8610 hci_stack->remote_name_clock_offset = clock_offset; 8611 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8612 hci_run(); 8613 return 0; 8614 } 8615 8616 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8617 hci_stack->gap_pairing_state = state; 8618 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8619 hci_run(); 8620 return 0; 8621 } 8622 8623 /** 8624 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8625 * @param addr 8626 * @param pin_data 8627 * @param pin_len 8628 * @return 0 if ok 8629 */ 8630 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8631 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8632 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8633 hci_stack->gap_pairing_pin_len = pin_len; 8634 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8635 } 8636 8637 /** 8638 * @brief Legacy Pairing Pin Code Response 8639 * @param addr 8640 * @param pin 8641 * @return 0 if ok 8642 */ 8643 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8644 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8645 } 8646 8647 /** 8648 * @brief Abort Legacy Pairing 8649 * @param addr 8650 * @param pin 8651 * @return 0 if ok 8652 */ 8653 int gap_pin_code_negative(bd_addr_t addr){ 8654 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8655 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8656 } 8657 8658 /** 8659 * @brief SSP Passkey Response 8660 * @param addr 8661 * @param passkey 8662 * @return 0 if ok 8663 */ 8664 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8665 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8666 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8667 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8668 } 8669 8670 /** 8671 * @brief Abort SSP Passkey Entry/Pairing 8672 * @param addr 8673 * @param pin 8674 * @return 0 if ok 8675 */ 8676 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8677 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8678 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8679 } 8680 8681 /** 8682 * @brief Accept SSP Numeric Comparison 8683 * @param addr 8684 * @param passkey 8685 * @return 0 if ok 8686 */ 8687 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8688 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8689 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8690 } 8691 8692 /** 8693 * @brief Abort SSP Numeric Comparison/Pairing 8694 * @param addr 8695 * @param pin 8696 * @return 0 if ok 8697 */ 8698 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8699 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8700 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8701 } 8702 8703 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8704 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8705 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8706 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8707 connectionSetAuthenticationFlags(conn, flag); 8708 hci_run(); 8709 return ERROR_CODE_SUCCESS; 8710 } 8711 #endif 8712 8713 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8714 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8715 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8716 } 8717 8718 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8719 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8720 } 8721 #endif 8722 8723 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8724 /** 8725 * @brief Report Remote OOB Data 8726 * @param bd_addr 8727 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8728 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8729 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8730 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8731 */ 8732 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){ 8733 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8734 if (connection == NULL) { 8735 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8736 } 8737 connection->classic_oob_c_192 = c_192; 8738 connection->classic_oob_r_192 = r_192; 8739 8740 // ignore P-256 if not supported by us 8741 if (hci_stack->secure_connections_active){ 8742 connection->classic_oob_c_256 = c_256; 8743 connection->classic_oob_r_256 = r_256; 8744 } 8745 8746 return ERROR_CODE_SUCCESS; 8747 } 8748 /** 8749 * @brief Generate new OOB data 8750 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8751 */ 8752 void gap_ssp_generate_oob_data(void){ 8753 hci_stack->classic_read_local_oob_data = true; 8754 hci_run(); 8755 } 8756 8757 #endif 8758 8759 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8760 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8761 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8762 if (connection == NULL) { 8763 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8764 } 8765 8766 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8767 connection->link_key_type = type; 8768 8769 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8770 } 8771 8772 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8773 /** 8774 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8775 * @param inquiry_mode see bluetooth_defines.h 8776 */ 8777 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8778 hci_stack->inquiry_mode = inquiry_mode; 8779 } 8780 8781 /** 8782 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8783 */ 8784 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8785 hci_stack->sco_voice_setting = voice_setting; 8786 } 8787 8788 /** 8789 * @brief Get SCO Voice Setting 8790 * @return current voice setting 8791 */ 8792 uint16_t hci_get_sco_voice_setting(void){ 8793 return hci_stack->sco_voice_setting; 8794 } 8795 8796 static int hci_have_usb_transport(void){ 8797 if (!hci_stack->hci_transport) return 0; 8798 const char * transport_name = hci_stack->hci_transport->name; 8799 if (!transport_name) return 0; 8800 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8801 } 8802 8803 /** @brief Get SCO packet length for current SCO Voice setting 8804 * @note Using SCO packets of the exact length is required for USB transfer 8805 * @return Length of SCO packets in bytes (not audio frames) 8806 */ 8807 uint16_t hci_get_sco_packet_length(void){ 8808 uint16_t sco_packet_length = 0; 8809 8810 #ifdef ENABLE_SCO_OVER_HCI 8811 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8812 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8813 8814 if (hci_have_usb_transport()){ 8815 // see Core Spec for H2 USB Transfer. 8816 // 3 byte SCO header + 24 bytes per connection 8817 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8818 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8819 } else { 8820 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8821 sco_packet_length = 3 + 60 * multiplier; 8822 // assert that it still fits inside an SCO buffer 8823 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8824 sco_packet_length = 3 + 60; 8825 } 8826 } 8827 #endif 8828 8829 #ifdef HAVE_SCO_TRANSPORT 8830 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8831 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8832 sco_packet_length = 3 + 60 * multiplier; 8833 #endif 8834 return sco_packet_length; 8835 } 8836 8837 /** 8838 * @brief Sets the master/slave policy 8839 * @param policy (0: attempt to become master, 1: let connecting device decide) 8840 */ 8841 void hci_set_master_slave_policy(uint8_t policy){ 8842 hci_stack->master_slave_policy = policy; 8843 } 8844 8845 #endif 8846 8847 HCI_STATE hci_get_state(void){ 8848 return hci_stack->state; 8849 } 8850 8851 #ifdef ENABLE_CLASSIC 8852 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8853 hci_stack->gap_classic_accept_callback = accept_callback; 8854 } 8855 #endif 8856 8857 /** 8858 * @brief Set callback for Bluetooth Hardware Error 8859 */ 8860 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8861 hci_stack->hardware_error_callback = fn; 8862 } 8863 8864 void hci_disconnect_all(void){ 8865 btstack_linked_list_iterator_t it; 8866 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8867 while (btstack_linked_list_iterator_has_next(&it)){ 8868 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8869 if (con->state == SENT_DISCONNECT) continue; 8870 con->state = SEND_DISCONNECT; 8871 } 8872 hci_run(); 8873 } 8874 8875 uint16_t hci_get_manufacturer(void){ 8876 return hci_stack->manufacturer; 8877 } 8878 8879 #ifdef ENABLE_BLE 8880 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8881 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8882 if (!hci_con) return NULL; 8883 return &hci_con->sm_connection; 8884 } 8885 8886 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8887 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8888 #endif 8889 8890 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8891 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8892 if (hci_connection == NULL) return 0; 8893 if (hci_is_le_connection(hci_connection)){ 8894 #ifdef ENABLE_BLE 8895 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8896 if (sm_conn->sm_connection_encrypted) { 8897 return sm_conn->sm_actual_encryption_key_size; 8898 } 8899 #endif 8900 } else { 8901 #ifdef ENABLE_CLASSIC 8902 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8903 return hci_connection->encryption_key_size; 8904 } 8905 #endif 8906 } 8907 return 0; 8908 } 8909 8910 bool gap_authenticated(hci_con_handle_t con_handle){ 8911 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8912 if (hci_connection == NULL) return false; 8913 8914 switch (hci_connection->address_type){ 8915 #ifdef ENABLE_BLE 8916 case BD_ADDR_TYPE_LE_PUBLIC: 8917 case BD_ADDR_TYPE_LE_RANDOM: 8918 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8919 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8920 #endif 8921 #ifdef ENABLE_CLASSIC 8922 case BD_ADDR_TYPE_SCO: 8923 case BD_ADDR_TYPE_ACL: 8924 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8925 #endif 8926 default: 8927 return false; 8928 } 8929 } 8930 8931 bool gap_secure_connection(hci_con_handle_t con_handle){ 8932 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8933 if (hci_connection == NULL) return 0; 8934 8935 switch (hci_connection->address_type){ 8936 #ifdef ENABLE_BLE 8937 case BD_ADDR_TYPE_LE_PUBLIC: 8938 case BD_ADDR_TYPE_LE_RANDOM: 8939 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8940 return hci_connection->sm_connection.sm_connection_sc != 0; 8941 #endif 8942 #ifdef ENABLE_CLASSIC 8943 case BD_ADDR_TYPE_SCO: 8944 case BD_ADDR_TYPE_ACL: 8945 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8946 #endif 8947 default: 8948 return false; 8949 } 8950 } 8951 8952 bool gap_bonded(hci_con_handle_t con_handle){ 8953 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8954 if (hci_connection == NULL) return 0; 8955 8956 #ifdef ENABLE_CLASSIC 8957 link_key_t link_key; 8958 link_key_type_t link_key_type; 8959 #endif 8960 switch (hci_connection->address_type){ 8961 #ifdef ENABLE_BLE 8962 case BD_ADDR_TYPE_LE_PUBLIC: 8963 case BD_ADDR_TYPE_LE_RANDOM: 8964 return hci_connection->sm_connection.sm_le_db_index >= 0; 8965 #endif 8966 #ifdef ENABLE_CLASSIC 8967 case BD_ADDR_TYPE_SCO: 8968 case BD_ADDR_TYPE_ACL: 8969 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8970 #endif 8971 default: 8972 return false; 8973 } 8974 } 8975 8976 #ifdef ENABLE_BLE 8977 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8978 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8979 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8980 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8981 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8982 return sm_conn->sm_connection_authorization_state; 8983 } 8984 #endif 8985 8986 #ifdef ENABLE_CLASSIC 8987 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){ 8988 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8989 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8990 conn->sniff_min_interval = sniff_min_interval; 8991 conn->sniff_max_interval = sniff_max_interval; 8992 conn->sniff_attempt = sniff_attempt; 8993 conn->sniff_timeout = sniff_timeout; 8994 hci_run(); 8995 return 0; 8996 } 8997 8998 /** 8999 * @brief Exit Sniff mode 9000 * @param con_handle 9001 @ @return 0 if ok 9002 */ 9003 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9004 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9005 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9006 conn->sniff_min_interval = 0xffff; 9007 hci_run(); 9008 return 0; 9009 } 9010 9011 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){ 9012 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9013 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9014 conn->sniff_subrating_max_latency = max_latency; 9015 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9016 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9017 hci_run(); 9018 return ERROR_CODE_SUCCESS; 9019 } 9020 9021 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){ 9022 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9023 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9024 conn->qos_service_type = service_type; 9025 conn->qos_token_rate = token_rate; 9026 conn->qos_peak_bandwidth = peak_bandwidth; 9027 conn->qos_latency = latency; 9028 conn->qos_delay_variation = delay_variation; 9029 hci_run(); 9030 return ERROR_CODE_SUCCESS; 9031 } 9032 9033 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9034 hci_stack->new_page_scan_interval = page_scan_interval; 9035 hci_stack->new_page_scan_window = page_scan_window; 9036 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9037 hci_run(); 9038 } 9039 9040 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9041 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9042 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9043 hci_run(); 9044 } 9045 9046 void gap_set_page_timeout(uint16_t page_timeout){ 9047 hci_stack->page_timeout = page_timeout; 9048 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9049 hci_run(); 9050 } 9051 9052 #endif 9053 9054 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9055 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9056 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9057 if (le_device_db_index >= le_device_db_max_count()) return; 9058 uint8_t offset = le_device_db_index >> 3; 9059 uint8_t mask = 1 << (le_device_db_index & 7); 9060 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9061 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9062 // note: go back to remove entries, otherwise, a remove + add will skip the add 9063 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9064 } 9065 } 9066 9067 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9068 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9069 if (le_device_db_index >= le_device_db_max_count()) return; 9070 uint8_t offset = le_device_db_index >> 3; 9071 uint8_t mask = 1 << (le_device_db_index & 7); 9072 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9073 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9074 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9075 } 9076 } 9077 9078 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9079 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9080 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9081 } 9082 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9083 // restart le resolving list update 9084 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9085 } 9086 return ERROR_CODE_SUCCESS; 9087 } 9088 #endif 9089 9090 #ifdef ENABLE_BLE 9091 #ifdef ENABLE_LE_CENTRAL 9092 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9093 9094 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9095 // check if already in list 9096 btstack_linked_list_iterator_t it; 9097 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9098 while (btstack_linked_list_iterator_has_next(&it)) { 9099 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9100 if (entry->sid != advertising_sid) { 9101 continue; 9102 } 9103 if (entry->address_type != address_type) { 9104 continue; 9105 } 9106 if (memcmp(entry->address, address, 6) != 0) { 9107 continue; 9108 } 9109 // disallow if already scheduled to add 9110 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9111 return ERROR_CODE_COMMAND_DISALLOWED; 9112 } 9113 // still on controller, but scheduled to remove -> re-add 9114 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9115 return ERROR_CODE_SUCCESS; 9116 } 9117 // alloc and add to list 9118 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9119 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9120 entry->sid = advertising_sid; 9121 entry->address_type = address_type; 9122 (void)memcpy(entry->address, address, 6); 9123 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9124 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9125 return ERROR_CODE_SUCCESS; 9126 } 9127 9128 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9129 btstack_linked_list_iterator_t it; 9130 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9131 while (btstack_linked_list_iterator_has_next(&it)){ 9132 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9133 if (entry->sid != advertising_sid) { 9134 continue; 9135 } 9136 if (entry->address_type != address_type) { 9137 continue; 9138 } 9139 if (memcmp(entry->address, address, 6) != 0) { 9140 continue; 9141 } 9142 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9143 // remove from controller if already present 9144 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9145 } else { 9146 // directly remove entry from whitelist 9147 btstack_linked_list_iterator_remove(&it); 9148 btstack_memory_periodic_advertiser_list_entry_free(entry); 9149 } 9150 return ERROR_CODE_SUCCESS; 9151 } 9152 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9153 } 9154 9155 static void hci_periodic_advertiser_list_clear(void){ 9156 btstack_linked_list_iterator_t it; 9157 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9158 while (btstack_linked_list_iterator_has_next(&it)){ 9159 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9160 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9161 // remove from controller if already present 9162 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9163 continue; 9164 } 9165 // directly remove entry from whitelist 9166 btstack_linked_list_iterator_remove(&it); 9167 btstack_memory_periodic_advertiser_list_entry_free(entry); 9168 } 9169 } 9170 9171 // free all entries unconditionally 9172 static void hci_periodic_advertiser_list_free(void){ 9173 btstack_linked_list_iterator_t lit; 9174 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 9175 while (btstack_linked_list_iterator_has_next(&lit)){ 9176 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 9177 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 9178 btstack_memory_periodic_advertiser_list_entry_free(entry); 9179 } 9180 } 9181 9182 uint8_t gap_periodic_advertiser_list_clear(void){ 9183 hci_periodic_advertiser_list_clear(); 9184 hci_run(); 9185 return ERROR_CODE_SUCCESS; 9186 } 9187 9188 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9189 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9190 if (status){ 9191 return status; 9192 } 9193 hci_run(); 9194 return ERROR_CODE_SUCCESS; 9195 } 9196 9197 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9198 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9199 if (status){ 9200 return status; 9201 } 9202 hci_run(); 9203 return ERROR_CODE_SUCCESS; 9204 } 9205 9206 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9207 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9208 // abort if already active 9209 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9210 return ERROR_CODE_COMMAND_DISALLOWED; 9211 } 9212 // store request 9213 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9214 hci_stack->le_periodic_sync_options = options; 9215 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9216 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9217 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9218 hci_stack->le_periodic_sync_skip = skip; 9219 hci_stack->le_periodic_sync_timeout = sync_timeout; 9220 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9221 9222 hci_run(); 9223 return ERROR_CODE_SUCCESS; 9224 } 9225 9226 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9227 // abort if not requested 9228 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9229 return ERROR_CODE_COMMAND_DISALLOWED; 9230 } 9231 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9232 hci_run(); 9233 return ERROR_CODE_SUCCESS; 9234 } 9235 9236 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9237 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9238 return ERROR_CODE_COMMAND_DISALLOWED; 9239 } 9240 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9241 hci_run(); 9242 return ERROR_CODE_SUCCESS; 9243 } 9244 9245 #endif 9246 #endif 9247 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9248 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 9249 hci_iso_stream_state_t state) { 9250 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9251 if (iso_stream == NULL){ 9252 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9253 } else { 9254 iso_stream->iso_type = iso_type; 9255 iso_stream->state = state; 9256 iso_stream->con_handle = con_handle; 9257 iso_stream->group_id = group_id; 9258 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9259 return ERROR_CODE_SUCCESS; 9260 } 9261 } 9262 9263 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9264 btstack_linked_list_iterator_t it; 9265 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9266 while (btstack_linked_list_iterator_has_next(&it)){ 9267 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9268 if (iso_stream->con_handle == con_handle ) { 9269 return iso_stream; 9270 } 9271 } 9272 return NULL; 9273 } 9274 9275 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9276 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->con_handle, iso_stream->group_id); 9277 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9278 btstack_memory_hci_iso_stream_free(iso_stream); 9279 } 9280 9281 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9282 btstack_linked_list_iterator_t it; 9283 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9284 while (btstack_linked_list_iterator_has_next(&it)){ 9285 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9286 if ((iso_stream->group_id == group_id) && 9287 (iso_stream->iso_type == iso_type)){ 9288 btstack_linked_list_iterator_remove(&it); 9289 btstack_memory_hci_iso_stream_free(iso_stream); 9290 } 9291 } 9292 } 9293 9294 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9295 btstack_linked_list_iterator_t it; 9296 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9297 while (btstack_linked_list_iterator_has_next(&it)){ 9298 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9299 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9300 (iso_stream->group_id == group_id)){ 9301 btstack_linked_list_iterator_remove(&it); 9302 btstack_memory_hci_iso_stream_free(iso_stream); 9303 } 9304 } 9305 } 9306 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9307 btstack_linked_list_iterator_t it; 9308 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9309 while (btstack_linked_list_iterator_has_next(&it)){ 9310 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9311 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9312 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9313 } 9314 } 9315 } 9316 9317 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9318 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9319 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9320 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9321 return (sdu_len_offset + 2 + sdu_len) == size; 9322 } 9323 9324 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9325 if (hci_stack->iso_packet_handler == NULL) { 9326 return; 9327 } 9328 if (size < 4) { 9329 return; 9330 } 9331 9332 // parse header 9333 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9334 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9335 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9336 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9337 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9338 9339 // assert packet is complete 9340 if ((iso_data_len + 4u) != size){ 9341 return; 9342 } 9343 9344 if ((pb_flag & 0x01) == 0){ 9345 if (pb_flag == 0x02){ 9346 // The ISO_Data_Load field contains a header and a complete SDU. 9347 if (hci_iso_sdu_complete(packet, size)) { 9348 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9349 } 9350 } else { 9351 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9352 if (iso_stream == NULL){ 9353 return; 9354 } 9355 if (size > HCI_ISO_PAYLOAD_SIZE){ 9356 return; 9357 } 9358 memcpy(iso_stream->reassembly_buffer, packet, size); 9359 // fix pb_flag 9360 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9361 iso_stream->reassembly_pos = size; 9362 } 9363 } else { 9364 // iso_data_load contains continuation or last fragment of an SDU 9365 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9366 if (ts_flag != 0){ 9367 return; 9368 } 9369 // append fragment 9370 if (iso_stream == NULL){ 9371 return; 9372 } 9373 if (iso_stream->reassembly_pos == 0){ 9374 return; 9375 } 9376 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9377 // reset reassembly buffer 9378 iso_stream->reassembly_pos = 0; 9379 return; 9380 } 9381 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9382 iso_stream->reassembly_pos += iso_data_len; 9383 9384 // deliver if last fragment and SDU complete 9385 if (pb_flag == 0x03){ 9386 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9387 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9388 } 9389 iso_stream->reassembly_pos = 0; 9390 } 9391 } 9392 } 9393 9394 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9395 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9396 uint16_t pos = 0; 9397 event[pos++] = HCI_EVENT_META_GAP; 9398 event[pos++] = 4 + (2 * big->num_bis); 9399 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9400 event[pos++] = status; 9401 event[pos++] = big->big_handle; 9402 event[pos++] = big->num_bis; 9403 uint8_t i; 9404 for (i=0;i<big->num_bis;i++){ 9405 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9406 pos += 2; 9407 } 9408 hci_emit_event(event, pos, 0); 9409 } 9410 9411 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9412 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9413 uint16_t pos = 0; 9414 event[pos++] = HCI_EVENT_META_GAP; 9415 event[pos++] = 4 + (2 * cig->num_cis); 9416 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9417 event[pos++] = status; 9418 event[pos++] = cig->cig_id; 9419 event[pos++] = cig->num_cis; 9420 uint8_t i; 9421 for (i=0;i<cig->num_cis;i++){ 9422 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9423 pos += 2; 9424 } 9425 hci_emit_event(event, pos, 0); 9426 } 9427 9428 static void 9429 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status) { 9430 uint8_t event [7]; 9431 uint16_t pos = 0; 9432 event[pos++] = HCI_EVENT_META_GAP; 9433 event[pos++] = 5; 9434 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9435 event[pos++] = status; 9436 event[pos++] = cig_id; 9437 little_endian_store_16(event, pos, cis_con_handle); 9438 pos += 2; 9439 hci_emit_event(event, pos, 0); 9440 } 9441 9442 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9443 uint8_t event [4]; 9444 uint16_t pos = 0; 9445 event[pos++] = HCI_EVENT_META_GAP; 9446 event[pos++] = 2; 9447 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9448 event[pos++] = big->big_handle; 9449 hci_emit_event(event, pos, 0); 9450 } 9451 9452 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9453 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9454 uint16_t pos = 0; 9455 event[pos++] = HCI_EVENT_META_GAP; 9456 event[pos++] = 4; 9457 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9458 event[pos++] = status; 9459 event[pos++] = big_sync->big_handle; 9460 event[pos++] = big_sync->num_bis; 9461 uint8_t i; 9462 for (i=0;i<big_sync->num_bis;i++){ 9463 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9464 pos += 2; 9465 } 9466 hci_emit_event(event, pos, 0); 9467 } 9468 9469 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9470 uint8_t event [4]; 9471 uint16_t pos = 0; 9472 event[pos++] = HCI_EVENT_META_GAP; 9473 event[pos++] = 2; 9474 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9475 event[pos++] = big_handle; 9476 hci_emit_event(event, pos, 0); 9477 } 9478 9479 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9480 uint8_t event[6]; 9481 uint16_t pos = 0; 9482 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9483 event[pos++] = sizeof(event) - 2; 9484 event[pos++] = big->big_handle; 9485 event[pos++] = bis_index; 9486 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9487 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9488 } 9489 9490 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9491 uint8_t event[4]; 9492 uint16_t pos = 0; 9493 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9494 event[pos++] = sizeof(event) - 2; 9495 little_endian_store_16(event, pos, cis_con_handle); 9496 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9497 } 9498 9499 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9500 btstack_linked_list_iterator_t it; 9501 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9502 while (btstack_linked_list_iterator_has_next(&it)){ 9503 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9504 if ( big->big_handle == big_handle ) { 9505 return big; 9506 } 9507 } 9508 return NULL; 9509 } 9510 9511 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9512 btstack_linked_list_iterator_t it; 9513 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9514 while (btstack_linked_list_iterator_has_next(&it)){ 9515 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9516 if ( big_sync->big_handle == big_handle ) { 9517 return big_sync; 9518 } 9519 } 9520 return NULL; 9521 } 9522 9523 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9524 hci_stack->iso_packets_to_queue = num_packets; 9525 } 9526 9527 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9528 btstack_linked_list_iterator_t it; 9529 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9530 while (btstack_linked_list_iterator_has_next(&it)){ 9531 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9532 if ( cig->cig_id == cig_id ) { 9533 return cig; 9534 } 9535 } 9536 return NULL; 9537 } 9538 9539 static void hci_iso_notify_can_send_now(void){ 9540 9541 // BIG 9542 9543 btstack_linked_list_iterator_t it; 9544 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9545 while (btstack_linked_list_iterator_has_next(&it)){ 9546 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9547 // track number completed packet timestamps 9548 if (big->num_completed_timestamp_current_valid){ 9549 big->num_completed_timestamp_current_valid = false; 9550 if (big->num_completed_timestamp_previous_valid){ 9551 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9552 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9553 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9554 big->num_completed_timestamp_previous_ms); 9555 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9556 // to catch up, skip packet on all BIS 9557 uint8_t i; 9558 for (i=0;i<big->num_bis;i++){ 9559 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9560 if (iso_stream){ 9561 iso_stream->num_packets_to_skip++; 9562 } 9563 } 9564 } 9565 } 9566 big->num_completed_timestamp_previous_valid = true; 9567 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9568 } 9569 9570 if (big->can_send_now_requested){ 9571 // check if no outgoing iso packets pending and no can send now have to be emitted 9572 uint8_t i; 9573 bool can_send = true; 9574 uint8_t num_iso_queued_minimum = 0; 9575 for (i=0;i<big->num_bis;i++){ 9576 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9577 if (iso_stream == NULL) continue; 9578 // handle case where individual ISO packet was sent too late: 9579 // for each additionally queued packet, a new one needs to get skipped 9580 if (i==0){ 9581 num_iso_queued_minimum = iso_stream->num_packets_sent; 9582 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9583 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9584 iso_stream->num_packets_to_skip += num_packets_to_skip; 9585 iso_stream->num_packets_sent -= num_packets_to_skip; 9586 } 9587 // check if we can send now 9588 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9589 can_send = false; 9590 break; 9591 } 9592 } 9593 if (can_send){ 9594 // propagate can send now to individual streams 9595 big->can_send_now_requested = false; 9596 for (i=0;i<big->num_bis;i++){ 9597 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9598 iso_stream->emit_ready_to_send = true; 9599 } 9600 } 9601 } 9602 } 9603 9604 if (hci_stack->hci_packet_buffer_reserved) return; 9605 9606 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9607 while (btstack_linked_list_iterator_has_next(&it)){ 9608 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9609 // report bis ready 9610 uint8_t i; 9611 for (i=0;i<big->num_bis;i++){ 9612 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9613 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9614 iso_stream->emit_ready_to_send = false; 9615 hci_emit_bis_can_send_now(big, i); 9616 break; 9617 } 9618 } 9619 } 9620 9621 // CIS 9622 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9623 while (btstack_linked_list_iterator_has_next(&it)) { 9624 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9625 if ((iso_stream->can_send_now_requested) && 9626 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9627 iso_stream->can_send_now_requested = false; 9628 hci_emit_cis_can_send_now(iso_stream->con_handle); 9629 } 9630 } 9631 } 9632 9633 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9634 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9635 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9636 } 9637 if (big_params->num_bis == 0){ 9638 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9639 } 9640 if (big_params->num_bis > MAX_NR_BIS){ 9641 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9642 } 9643 9644 // reserve ISO Streams 9645 uint8_t i; 9646 uint8_t status = ERROR_CODE_SUCCESS; 9647 for (i=0;i<big_params->num_bis;i++){ 9648 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_CON_HANDLE_INVALID, big_params->big_handle, 9649 HCI_ISO_STREAM_STATE_REQUESTED); 9650 if (status != ERROR_CODE_SUCCESS) { 9651 break; 9652 } 9653 } 9654 9655 // free structs on error 9656 if (status != ERROR_CODE_SUCCESS){ 9657 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9658 return status; 9659 } 9660 9661 le_audio_big_t * big = storage; 9662 big->big_handle = big_params->big_handle; 9663 big->params = big_params; 9664 big->state = LE_AUDIO_BIG_STATE_CREATE; 9665 big->num_bis = big_params->num_bis; 9666 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9667 9668 hci_run(); 9669 9670 return ERROR_CODE_SUCCESS; 9671 } 9672 9673 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9674 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9675 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9676 } 9677 if (big_sync_params->num_bis == 0){ 9678 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9679 } 9680 if (big_sync_params->num_bis > MAX_NR_BIS){ 9681 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9682 } 9683 9684 le_audio_big_sync_t * big_sync = storage; 9685 big_sync->big_handle = big_sync_params->big_handle; 9686 big_sync->params = big_sync_params; 9687 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9688 big_sync->num_bis = big_sync_params->num_bis; 9689 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9690 9691 hci_run(); 9692 9693 return ERROR_CODE_SUCCESS; 9694 } 9695 9696 uint8_t gap_big_terminate(uint8_t big_handle){ 9697 le_audio_big_t * big = hci_big_for_handle(big_handle); 9698 if (big == NULL){ 9699 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9700 } 9701 switch (big->state){ 9702 case LE_AUDIO_BIG_STATE_CREATE: 9703 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9704 hci_emit_big_terminated(big); 9705 break; 9706 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9707 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9708 break; 9709 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9710 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9711 case LE_AUDIO_BIG_STATE_ACTIVE: 9712 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9713 hci_run(); 9714 break; 9715 default: 9716 return ERROR_CODE_COMMAND_DISALLOWED; 9717 } 9718 return ERROR_CODE_SUCCESS; 9719 } 9720 9721 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9722 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9723 if (big_sync == NULL){ 9724 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9725 } 9726 switch (big_sync->state){ 9727 case LE_AUDIO_BIG_STATE_CREATE: 9728 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9729 hci_emit_big_sync_stopped(big_handle); 9730 break; 9731 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9732 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9733 break; 9734 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9735 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9736 case LE_AUDIO_BIG_STATE_ACTIVE: 9737 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9738 hci_run(); 9739 break; 9740 default: 9741 return ERROR_CODE_COMMAND_DISALLOWED; 9742 } 9743 return ERROR_CODE_SUCCESS; 9744 } 9745 9746 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9747 le_audio_big_t * big = hci_big_for_handle(big_handle); 9748 if (big == NULL){ 9749 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9750 } 9751 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9752 return ERROR_CODE_COMMAND_DISALLOWED; 9753 } 9754 big->can_send_now_requested = true; 9755 hci_iso_notify_can_send_now(); 9756 return ERROR_CODE_SUCCESS; 9757 } 9758 9759 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 9760 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9761 if (iso_stream == NULL){ 9762 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9763 } 9764 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 9765 return ERROR_CODE_COMMAND_DISALLOWED; 9766 } 9767 iso_stream->can_send_now_requested = true; 9768 hci_iso_notify_can_send_now(); 9769 return ERROR_CODE_SUCCESS; 9770 } 9771 9772 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 9773 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 9774 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9775 } 9776 if (cig_params->num_cis == 0){ 9777 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9778 } 9779 if (cig_params->num_cis > MAX_NR_BIS){ 9780 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9781 } 9782 9783 // reserve ISO Streams 9784 uint8_t i; 9785 uint8_t status = ERROR_CODE_SUCCESS; 9786 for (i=0;i<cig_params->num_cis;i++){ 9787 status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_CON_HANDLE_INVALID, cig_params->cig_id, 9788 HCI_ISO_STREAM_STATE_REQUESTED); 9789 if (status != ERROR_CODE_SUCCESS) { 9790 break; 9791 } 9792 } 9793 9794 // free structs on error 9795 if (status != ERROR_CODE_SUCCESS){ 9796 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 9797 return status; 9798 } 9799 9800 le_audio_cig_t * cig = storage; 9801 cig->cig_id = cig_params->cig_id; 9802 cig->num_cis = cig_params->num_cis; 9803 cig->params = cig_params; 9804 cig->state = LE_AUDIO_CIG_STATE_CREATE; 9805 for (i=0;i<cig->num_cis;i++){ 9806 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 9807 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 9808 } 9809 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 9810 9811 hci_run(); 9812 9813 return ERROR_CODE_SUCCESS; 9814 } 9815 9816 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 9817 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 9818 if (cig == NULL){ 9819 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9820 } 9821 9822 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 9823 return ERROR_CODE_COMMAND_DISALLOWED; 9824 } 9825 9826 // store ACL Connection Handles 9827 uint8_t i; 9828 for (i=0;i<cig->num_cis;i++){ 9829 // check that all con handles exit 9830 hci_con_handle_t cis_handle = cis_con_handles[i]; 9831 uint8_t j; 9832 bool found = false; 9833 for (j=0;j<cig->num_cis;j++){ 9834 if (cig->cis_con_handles[j] == cis_handle){ 9835 cig->acl_con_handles[j] = acl_con_handles[j]; 9836 found = true; 9837 break; 9838 } 9839 } 9840 if (!found){ 9841 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9842 } 9843 } 9844 9845 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 9846 hci_run(); 9847 9848 return ERROR_CODE_SUCCESS; 9849 } 9850 9851 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_con_handle, hci_iso_stream_state_t state){ 9852 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9853 if (iso_stream != NULL){ 9854 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9855 } 9856 9857 uint8_t status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, cis_con_handle, 9858 HCI_ISO_GROUP_ID_INVALID, state); 9859 if (status == ERROR_CODE_SUCCESS){ 9860 return status; 9861 } 9862 9863 hci_run(); 9864 return ERROR_CODE_SUCCESS; 9865 } 9866 9867 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 9868 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 9869 } 9870 9871 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 9872 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 9873 } 9874 9875 9876 #endif 9877 #endif /* ENABLE_BLE */ 9878 9879 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9880 void hci_setup_test_connections_fuzz(void){ 9881 hci_connection_t * conn; 9882 9883 // default address: 66:55:44:33:00:01 9884 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9885 9886 // setup Controller info 9887 hci_stack->num_cmd_packets = 255; 9888 hci_stack->acl_packets_total_num = 255; 9889 9890 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9891 addr[5] = 0x01; 9892 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9893 conn->con_handle = addr[5]; 9894 conn->role = HCI_ROLE_SLAVE; 9895 conn->state = RECEIVED_CONNECTION_REQUEST; 9896 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9897 9898 // setup incoming Classic SCO connection with con handle 0x0002 9899 addr[5] = 0x02; 9900 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9901 conn->con_handle = addr[5]; 9902 conn->role = HCI_ROLE_SLAVE; 9903 conn->state = RECEIVED_CONNECTION_REQUEST; 9904 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9905 9906 // setup ready Classic ACL connection with con handle 0x0003 9907 addr[5] = 0x03; 9908 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9909 conn->con_handle = addr[5]; 9910 conn->role = HCI_ROLE_SLAVE; 9911 conn->state = OPEN; 9912 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9913 9914 // setup ready Classic SCO connection with con handle 0x0004 9915 addr[5] = 0x04; 9916 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9917 conn->con_handle = addr[5]; 9918 conn->role = HCI_ROLE_SLAVE; 9919 conn->state = OPEN; 9920 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9921 9922 // setup ready LE ACL connection with con handle 0x005 and public address 9923 addr[5] = 0x05; 9924 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9925 conn->con_handle = addr[5]; 9926 conn->role = HCI_ROLE_SLAVE; 9927 conn->state = OPEN; 9928 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9929 conn->sm_connection.sm_connection_encrypted = 1; 9930 } 9931 9932 void hci_free_connections_fuzz(void){ 9933 btstack_linked_list_iterator_t it; 9934 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9935 while (btstack_linked_list_iterator_has_next(&it)){ 9936 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9937 btstack_linked_list_iterator_remove(&it); 9938 btstack_memory_hci_connection_free(con); 9939 } 9940 } 9941 void hci_simulate_working_fuzz(void){ 9942 hci_stack->le_scanning_param_update = false; 9943 hci_init_done(); 9944 hci_stack->num_cmd_packets = 255; 9945 } 9946 #endif 9947