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 #ifdef ENABLE_LE_CENTRAL 223 // called from test/ble_client/advertising_data_parser.c 224 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 225 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 226 static hci_connection_t * gap_get_outgoing_connection(void); 227 static void hci_le_scan_stop(void); 228 static bool hci_run_general_gap_le(void); 229 #endif 230 #ifdef ENABLE_LE_PERIPHERAL 231 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 232 static void hci_periodic_advertiser_list_free(void); 233 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 234 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 235 #endif /* ENABLE_LE_PERIPHERAL */ 236 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 237 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 238 hci_iso_stream_state_t state); 239 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 240 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 241 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 242 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 243 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 244 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 245 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 246 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 247 static void hci_iso_notify_can_send_now(void); 248 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 249 static void hci_emit_big_terminated(const le_audio_big_t * big); 250 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 251 static void hci_emit_big_sync_stopped(uint8_t big_handle); 252 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 253 static void 254 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status); 255 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 256 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 257 #endif /* ENABLE_BLE */ 258 259 // the STACK is here 260 #ifndef HAVE_MALLOC 261 static hci_stack_t hci_stack_static; 262 #endif 263 static hci_stack_t * hci_stack = NULL; 264 265 #ifdef ENABLE_CLASSIC 266 // default name 267 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 268 269 // test helper 270 static uint8_t disable_l2cap_timeouts = 0; 271 #endif 272 273 static bool btstack_is_null(uint8_t * data, uint16_t size){ 274 uint16_t i; 275 for (i=0; i < size ; i++){ 276 if (data[i] != 0) { 277 return false; 278 } 279 } 280 return true; 281 } 282 283 // reset connection state on create and on reconnect 284 // don't overwrite addr, con handle, role 285 static void hci_connection_init(hci_connection_t * conn){ 286 conn->authentication_flags = AUTH_FLAG_NONE; 287 conn->bonding_flags = 0; 288 conn->requested_security_level = LEVEL_0; 289 #ifdef ENABLE_CLASSIC 290 conn->request_role = HCI_ROLE_INVALID; 291 conn->sniff_subrating_max_latency = 0xffff; 292 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 293 conn->link_key_type = INVALID_LINK_KEY; 294 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 295 btstack_run_loop_set_timer_context(&conn->timeout, conn); 296 hci_connection_timestamp(conn); 297 #endif 298 conn->acl_recombination_length = 0; 299 conn->acl_recombination_pos = 0; 300 conn->num_packets_sent = 0; 301 302 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 303 #ifdef ENABLE_BLE 304 conn->le_phy_update_all_phys = 0xff; 305 #endif 306 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 307 conn->le_max_tx_octets = 27; 308 #endif 309 #ifdef ENABLE_CLASSIC_PAIRING_OOB 310 conn->classic_oob_c_192 = NULL; 311 conn->classic_oob_r_192 = NULL; 312 conn->classic_oob_c_256 = NULL; 313 conn->classic_oob_r_256 = NULL; 314 #endif 315 } 316 317 /** 318 * create connection for given address 319 * 320 * @return connection OR NULL, if no memory left 321 */ 322 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 323 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 324 325 hci_connection_t * conn = btstack_memory_hci_connection_get(); 326 if (!conn) return NULL; 327 hci_connection_init(conn); 328 329 bd_addr_copy(conn->address, addr); 330 conn->address_type = addr_type; 331 conn->con_handle = HCI_CON_HANDLE_INVALID; 332 conn->role = HCI_ROLE_INVALID; 333 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 334 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 335 #endif 336 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 337 338 return conn; 339 } 340 341 342 /** 343 * get le connection parameter range 344 * 345 * @return le connection parameter range struct 346 */ 347 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 348 *range = hci_stack->le_connection_parameter_range; 349 } 350 351 /** 352 * set le connection parameter range 353 * 354 */ 355 356 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 357 hci_stack->le_connection_parameter_range = *range; 358 } 359 360 /** 361 * @brief Test if connection parameters are inside in existing rage 362 * @param conn_interval_min (unit: 1.25ms) 363 * @param conn_interval_max (unit: 1.25ms) 364 * @param conn_latency 365 * @param supervision_timeout (unit: 10ms) 366 * @return 1 if included 367 */ 368 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){ 369 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 370 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 371 372 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 373 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 374 375 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 376 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 377 378 return 1; 379 } 380 381 /** 382 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 383 * @note: default: 1 384 * @param max_peripheral_connections 385 */ 386 #ifdef ENABLE_LE_PERIPHERAL 387 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 388 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 389 } 390 #endif 391 392 /** 393 * get hci connections iterator 394 * 395 * @return hci connections iterator 396 */ 397 398 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 399 btstack_linked_list_iterator_init(it, &hci_stack->connections); 400 } 401 402 /** 403 * get connection for a given handle 404 * 405 * @return connection OR NULL, if not found 406 */ 407 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 408 btstack_linked_list_iterator_t it; 409 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 410 while (btstack_linked_list_iterator_has_next(&it)){ 411 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 412 if ( item->con_handle == con_handle ) { 413 return item; 414 } 415 } 416 return NULL; 417 } 418 419 /** 420 * get connection for given address 421 * 422 * @return connection OR NULL, if not found 423 */ 424 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 425 btstack_linked_list_iterator_t it; 426 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 427 while (btstack_linked_list_iterator_has_next(&it)){ 428 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 429 if (connection->address_type != addr_type) continue; 430 if (memcmp(addr, connection->address, 6) != 0) continue; 431 return connection; 432 } 433 return NULL; 434 } 435 436 #ifdef ENABLE_CLASSIC 437 438 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 439 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 440 } 441 442 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 443 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 444 } 445 446 #ifdef ENABLE_SCO_OVER_HCI 447 static int hci_number_sco_connections(void){ 448 int connections = 0; 449 btstack_linked_list_iterator_t it; 450 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 451 while (btstack_linked_list_iterator_has_next(&it)){ 452 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 453 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 454 connections++; 455 } 456 return connections; 457 } 458 #endif 459 460 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 461 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 462 #ifdef HAVE_EMBEDDED_TICK 463 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 464 // connections might be timed out 465 hci_emit_l2cap_check_timeout(connection); 466 } 467 #else 468 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 469 // connections might be timed out 470 hci_emit_l2cap_check_timeout(connection); 471 } 472 #endif 473 } 474 475 static void hci_connection_timestamp(hci_connection_t *connection){ 476 #ifdef HAVE_EMBEDDED_TICK 477 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 478 #else 479 connection->timestamp = btstack_run_loop_get_time_ms(); 480 #endif 481 } 482 483 /** 484 * add authentication flags and reset timer 485 * @note: assumes classic connection 486 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 487 */ 488 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 489 bd_addr_t addr; 490 reverse_bd_addr(bd_addr, addr); 491 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 492 if (conn) { 493 connectionSetAuthenticationFlags(conn, flags); 494 hci_connection_timestamp(conn); 495 } 496 } 497 498 static bool hci_pairing_active(hci_connection_t * hci_connection){ 499 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 500 } 501 502 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 503 if (hci_pairing_active(hci_connection)) return; 504 if (ssp){ 505 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 506 } else { 507 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 508 } 509 // if we are initiator, we have sent an HCI Authenticate Request 510 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 511 512 // if we are responder, use minimal service security level as required level 513 if (!initiator){ 514 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); 515 } 516 517 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 518 519 uint8_t event[12]; 520 event[0] = GAP_EVENT_PAIRING_STARTED; 521 event[1] = 10; 522 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 523 reverse_bd_addr(hci_connection->address, &event[4]); 524 event[10] = (uint8_t) ssp; 525 event[11] = (uint8_t) initiator; 526 hci_emit_event(event, sizeof(event), 1); 527 } 528 529 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 530 hci_connection->requested_security_level = LEVEL_0; 531 if (!hci_pairing_active(hci_connection)) return; 532 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 533 #ifdef ENABLE_CLASSIC_PAIRING_OOB 534 hci_connection->classic_oob_c_192 = NULL; 535 hci_connection->classic_oob_r_192 = NULL; 536 hci_connection->classic_oob_c_256 = NULL; 537 hci_connection->classic_oob_r_256 = NULL; 538 #endif 539 log_info("pairing complete, status %02x", status); 540 541 uint8_t event[11]; 542 event[0] = GAP_EVENT_PAIRING_COMPLETE; 543 event[1] = 9; 544 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 545 reverse_bd_addr(hci_connection->address, &event[4]); 546 event[10] = status; 547 hci_emit_event(event, sizeof(event), 1); 548 549 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 550 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 551 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 552 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 553 hci_connection->bonding_status = status; 554 } 555 } 556 557 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 558 hci_connection_t * conn = hci_connection_for_handle(handle); 559 if (!conn) return false; 560 return hci_pairing_active(conn); 561 } 562 563 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 564 if (!hci_stack->link_key_db) return; 565 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 566 hci_stack->link_key_db->delete_link_key(addr); 567 } 568 569 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 570 if (!hci_stack->link_key_db) return; 571 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 572 hci_stack->link_key_db->put_link_key(addr, link_key, type); 573 } 574 575 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 576 if (!hci_stack->link_key_db) return false; 577 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 578 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 579 return result; 580 } 581 582 void gap_delete_all_link_keys(void){ 583 bd_addr_t addr; 584 link_key_t link_key; 585 link_key_type_t type; 586 btstack_link_key_iterator_t it; 587 int ok = gap_link_key_iterator_init(&it); 588 if (!ok) { 589 log_error("could not initialize iterator"); 590 return; 591 } 592 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 593 gap_drop_link_key_for_bd_addr(addr); 594 } 595 gap_link_key_iterator_done(&it); 596 } 597 598 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 599 if (!hci_stack->link_key_db) return 0; 600 if (!hci_stack->link_key_db->iterator_init) return 0; 601 return hci_stack->link_key_db->iterator_init(it); 602 } 603 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){ 604 if (!hci_stack->link_key_db) return 0; 605 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 606 } 607 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 608 if (!hci_stack->link_key_db) return; 609 hci_stack->link_key_db->iterator_done(it); 610 } 611 #endif 612 613 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 614 switch (address_type){ 615 case BD_ADDR_TYPE_LE_PUBLIC: 616 case BD_ADDR_TYPE_LE_RANDOM: 617 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 618 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 619 return true; 620 default: 621 return false; 622 } 623 } 624 625 static int hci_is_le_connection(hci_connection_t * connection){ 626 return hci_is_le_connection_type(connection->address_type); 627 } 628 629 /** 630 * count connections 631 */ 632 static int nr_hci_connections(void){ 633 int count = 0; 634 btstack_linked_item_t *it; 635 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 636 count++; 637 } 638 return count; 639 } 640 641 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 642 643 unsigned int num_packets_sent_classic = 0; 644 unsigned int num_packets_sent_le = 0; 645 646 btstack_linked_item_t *it; 647 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 648 hci_connection_t * connection = (hci_connection_t *) it; 649 if (hci_is_le_connection(connection)){ 650 num_packets_sent_le += connection->num_packets_sent; 651 } 652 if (connection->address_type == BD_ADDR_TYPE_ACL){ 653 num_packets_sent_classic += connection->num_packets_sent; 654 } 655 } 656 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 657 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 658 int free_slots_le = 0; 659 660 if (free_slots_classic < 0){ 661 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); 662 return 0; 663 } 664 665 if (hci_stack->le_acl_packets_total_num){ 666 // if we have LE slots, they are used 667 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 668 if (free_slots_le < 0){ 669 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); 670 return 0; 671 } 672 } else { 673 // otherwise, classic slots are used for LE, too 674 free_slots_classic -= num_packets_sent_le; 675 if (free_slots_classic < 0){ 676 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); 677 return 0; 678 } 679 } 680 681 switch (address_type){ 682 case BD_ADDR_TYPE_UNKNOWN: 683 log_error("hci_number_free_acl_slots: unknown address type"); 684 return 0; 685 686 case BD_ADDR_TYPE_ACL: 687 return (uint16_t) free_slots_classic; 688 689 default: 690 if (hci_stack->le_acl_packets_total_num > 0){ 691 return (uint16_t) free_slots_le; 692 } 693 return (uint16_t) free_slots_classic; 694 } 695 } 696 697 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 698 // get connection type 699 hci_connection_t * connection = hci_connection_for_handle(con_handle); 700 if (!connection){ 701 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 702 return 0; 703 } 704 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 705 } 706 707 #ifdef ENABLE_CLASSIC 708 static int hci_number_free_sco_slots(void){ 709 unsigned int num_sco_packets_sent = 0; 710 btstack_linked_item_t *it; 711 if (hci_stack->synchronous_flow_control_enabled){ 712 // explicit flow control 713 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 714 hci_connection_t * connection = (hci_connection_t *) it; 715 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 716 num_sco_packets_sent += connection->num_packets_sent; 717 } 718 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 719 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 720 return 0; 721 } 722 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 723 } else { 724 // implicit flow control -- TODO 725 int num_ready = 0; 726 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 727 hci_connection_t * connection = (hci_connection_t *) it; 728 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 729 if (connection->sco_tx_ready == 0) continue; 730 num_ready++; 731 } 732 return num_ready; 733 } 734 } 735 #endif 736 737 // only used to send HCI Host Number Completed Packets 738 static int hci_can_send_comand_packet_transport(void){ 739 if (hci_stack->hci_packet_buffer_reserved) return 0; 740 741 // check for async hci transport implementations 742 if (hci_stack->hci_transport->can_send_packet_now){ 743 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 744 return 0; 745 } 746 } 747 return 1; 748 } 749 750 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 751 bool hci_can_send_command_packet_now(void){ 752 if (hci_can_send_comand_packet_transport() == 0) return false; 753 return hci_stack->num_cmd_packets > 0u; 754 } 755 756 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 757 // check for async hci transport implementations 758 if (!hci_stack->hci_transport->can_send_packet_now) return true; 759 return hci_stack->hci_transport->can_send_packet_now(packet_type); 760 } 761 762 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 763 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 764 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 765 } 766 767 bool hci_can_send_acl_le_packet_now(void){ 768 if (hci_stack->hci_packet_buffer_reserved) return false; 769 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 770 } 771 772 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 773 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 774 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 775 } 776 777 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 778 if (hci_stack->hci_packet_buffer_reserved) return false; 779 return hci_can_send_prepared_acl_packet_now(con_handle); 780 } 781 782 #ifdef ENABLE_CLASSIC 783 bool hci_can_send_acl_classic_packet_now(void){ 784 if (hci_stack->hci_packet_buffer_reserved) return false; 785 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 786 } 787 788 bool hci_can_send_prepared_sco_packet_now(void){ 789 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 790 if (hci_have_usb_transport()){ 791 return hci_stack->sco_can_send_now; 792 } else { 793 return hci_number_free_sco_slots() > 0; 794 } 795 } 796 797 bool hci_can_send_sco_packet_now(void){ 798 if (hci_stack->hci_packet_buffer_reserved) return false; 799 return hci_can_send_prepared_sco_packet_now(); 800 } 801 802 void hci_request_sco_can_send_now_event(void){ 803 hci_stack->sco_waiting_for_can_send_now = 1; 804 hci_notify_if_sco_can_send_now(); 805 } 806 #endif 807 808 // used for internal checks in l2cap.c 809 bool hci_is_packet_buffer_reserved(void){ 810 return hci_stack->hci_packet_buffer_reserved; 811 } 812 813 // reserves outgoing packet buffer. 814 // @return 1 if successful 815 bool hci_reserve_packet_buffer(void){ 816 if (hci_stack->hci_packet_buffer_reserved) { 817 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 818 return false; 819 } 820 hci_stack->hci_packet_buffer_reserved = true; 821 return true; 822 } 823 824 void hci_release_packet_buffer(void){ 825 hci_stack->hci_packet_buffer_reserved = false; 826 } 827 828 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 829 static int hci_transport_synchronous(void){ 830 return hci_stack->hci_transport->can_send_packet_now == NULL; 831 } 832 833 // used for debugging 834 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 835 static void hci_controller_dump_packets(void){ 836 // format: "{handle:04x}:{count:02d} " 837 char summaries[3][7 * 8 + 1]; 838 uint16_t totals[3]; 839 uint8_t index; 840 for (index = 0 ; index < 3 ; index++){ 841 summaries[index][0] = 0; 842 totals[index] = 0; 843 } 844 btstack_linked_item_t *it; 845 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 846 hci_connection_t * connection = (hci_connection_t *) it; 847 switch (connection->address_type){ 848 case BD_ADDR_TYPE_ACL: 849 index = 0; 850 break; 851 case BD_ADDR_TYPE_SCO: 852 index = 2; 853 break; 854 default: 855 index = 1; 856 break; 857 } 858 totals[index] += connection->num_packets_sent; 859 char item_text[10]; 860 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 861 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 862 } 863 for (index = 0 ; index < 3 ; index++){ 864 if (summaries[index][0] == 0){ 865 summaries[index][0] = '-'; 866 summaries[index][1] = 0; 867 } 868 } 869 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]); 870 } 871 #endif 872 873 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 874 875 // 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); 876 877 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 878 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 879 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 880 max_acl_data_packet_length = hci_stack->le_data_packets_length; 881 } 882 883 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 884 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 885 max_acl_data_packet_length = connection->le_max_tx_octets; 886 } 887 #endif 888 889 log_debug("hci_send_acl_packet_fragments entered"); 890 891 uint8_t status = ERROR_CODE_SUCCESS; 892 // multiple packets could be send on a synchronous HCI transport 893 while (true){ 894 895 log_debug("hci_send_acl_packet_fragments loop entered"); 896 897 // get current data 898 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 899 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 900 bool more_fragments = false; 901 902 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 903 if (current_acl_data_packet_length > max_acl_data_packet_length){ 904 more_fragments = true; 905 current_acl_data_packet_length = max_acl_data_packet_length; 906 } 907 908 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 909 if (acl_header_pos > 0u){ 910 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 911 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 912 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 913 } 914 915 // update header len 916 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 917 918 // count packet 919 connection->num_packets_sent++; 920 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 921 922 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 923 if (more_fragments){ 924 // update start of next fragment to send 925 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 926 } else { 927 // done 928 hci_stack->acl_fragmentation_pos = 0; 929 hci_stack->acl_fragmentation_total_size = 0; 930 } 931 932 // send packet 933 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 934 const int size = current_acl_data_packet_length + 4; 935 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 936 hci_stack->acl_fragmentation_tx_active = 1; 937 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 938 if (err != 0){ 939 // no error from HCI Transport expected 940 status = ERROR_CODE_HARDWARE_FAILURE; 941 } 942 943 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 944 hci_controller_dump_packets(); 945 #endif 946 947 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 948 949 // done yet? 950 if (!more_fragments) break; 951 952 // can send more? 953 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 954 } 955 956 log_debug("hci_send_acl_packet_fragments loop over"); 957 958 // release buffer now for synchronous transport 959 if (hci_transport_synchronous()){ 960 hci_stack->acl_fragmentation_tx_active = 0; 961 hci_release_packet_buffer(); 962 hci_emit_transport_packet_sent(); 963 } 964 965 return status; 966 } 967 968 // pre: caller has reserved the packet buffer 969 uint8_t hci_send_acl_packet_buffer(int size){ 970 btstack_assert(hci_stack->hci_packet_buffer_reserved); 971 972 uint8_t * packet = hci_stack->hci_packet_buffer; 973 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 974 975 // check for free places on Bluetooth module 976 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 977 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 978 hci_release_packet_buffer(); 979 hci_emit_transport_packet_sent(); 980 return BTSTACK_ACL_BUFFERS_FULL; 981 } 982 983 hci_connection_t *connection = hci_connection_for_handle( con_handle); 984 if (!connection) { 985 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 986 hci_release_packet_buffer(); 987 hci_emit_transport_packet_sent(); 988 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 989 } 990 991 #ifdef ENABLE_CLASSIC 992 hci_connection_timestamp(connection); 993 #endif 994 995 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 996 997 // setup data 998 hci_stack->acl_fragmentation_total_size = size; 999 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1000 1001 return hci_send_acl_packet_fragments(connection); 1002 } 1003 1004 #ifdef ENABLE_CLASSIC 1005 // pre: caller has reserved the packet buffer 1006 uint8_t hci_send_sco_packet_buffer(int size){ 1007 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1008 1009 uint8_t * packet = hci_stack->hci_packet_buffer; 1010 1011 // skip checks in loopback mode 1012 if (!hci_stack->loopback_mode){ 1013 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1014 1015 // check for free places on Bluetooth module 1016 if (!hci_can_send_prepared_sco_packet_now()) { 1017 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1018 hci_release_packet_buffer(); 1019 hci_emit_transport_packet_sent(); 1020 return BTSTACK_ACL_BUFFERS_FULL; 1021 } 1022 1023 // track send packet in connection struct 1024 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1025 if (!connection) { 1026 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1027 hci_release_packet_buffer(); 1028 hci_emit_transport_packet_sent(); 1029 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1030 } 1031 1032 if (hci_have_usb_transport()){ 1033 // token used 1034 hci_stack->sco_can_send_now = false; 1035 } else { 1036 if (hci_stack->synchronous_flow_control_enabled){ 1037 connection->num_packets_sent++; 1038 } else { 1039 connection->sco_tx_ready--; 1040 } 1041 } 1042 } 1043 1044 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1045 1046 #ifdef HAVE_SCO_TRANSPORT 1047 hci_stack->sco_transport->send_packet(packet, size); 1048 hci_release_packet_buffer(); 1049 hci_emit_transport_packet_sent(); 1050 1051 return 0; 1052 #else 1053 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1054 if (hci_transport_synchronous()){ 1055 hci_release_packet_buffer(); 1056 hci_emit_transport_packet_sent(); 1057 } 1058 1059 if (err != 0){ 1060 return ERROR_CODE_HARDWARE_FAILURE; 1061 } 1062 return ERROR_CODE_SUCCESS; 1063 #endif 1064 } 1065 #endif 1066 1067 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1068 static uint8_t hci_send_iso_packet_fragments(void){ 1069 1070 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1071 uint8_t status = ERROR_CODE_SUCCESS; 1072 // multiple packets could be send on a synchronous HCI transport 1073 while (true){ 1074 1075 // get current data 1076 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1077 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1078 bool more_fragments = false; 1079 1080 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1081 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1082 more_fragments = true; 1083 current_iso_data_packet_length = max_iso_data_packet_length; 1084 } 1085 1086 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1087 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1088 uint8_t pb_flags; 1089 if (iso_header_pos == 0u){ 1090 // first fragment, keep TS field 1091 pb_flags = more_fragments ? 0x00 : 0x02; 1092 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1093 } else { 1094 // later fragment, drop TS field 1095 pb_flags = more_fragments ? 0x01 : 0x03; 1096 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1097 } 1098 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1099 1100 // update header len 1101 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1102 1103 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1104 if (more_fragments){ 1105 // update start of next fragment to send 1106 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1107 } else { 1108 // done 1109 hci_stack->iso_fragmentation_pos = 0; 1110 hci_stack->iso_fragmentation_total_size = 0; 1111 } 1112 1113 // send packet 1114 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1115 const int size = current_iso_data_packet_length + 4; 1116 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1117 hci_stack->iso_fragmentation_tx_active = true; 1118 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1119 if (err != 0){ 1120 // no error from HCI Transport expected 1121 status = ERROR_CODE_HARDWARE_FAILURE; 1122 } 1123 1124 // done yet? 1125 if (!more_fragments) break; 1126 1127 // can send more? 1128 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1129 } 1130 1131 // release buffer now for synchronous transport 1132 if (hci_transport_synchronous()){ 1133 hci_stack->iso_fragmentation_tx_active = false; 1134 hci_release_packet_buffer(); 1135 hci_emit_transport_packet_sent(); 1136 } 1137 1138 return status; 1139 } 1140 1141 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1142 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1143 1144 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1145 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1146 if (iso_stream == NULL){ 1147 hci_release_packet_buffer(); 1148 hci_iso_notify_can_send_now(); 1149 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1150 } 1151 1152 // TODO: check for space on controller 1153 1154 // skip iso packets if needed 1155 if (iso_stream->num_packets_to_skip > 0){ 1156 iso_stream->num_packets_to_skip--; 1157 // pretend it was processed and trigger next one 1158 hci_release_packet_buffer(); 1159 hci_iso_notify_can_send_now(); 1160 return ERROR_CODE_SUCCESS; 1161 } 1162 1163 // track outgoing packet sent 1164 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1165 iso_stream->num_packets_sent++; 1166 1167 // setup data 1168 hci_stack->iso_fragmentation_total_size = size; 1169 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1170 1171 return hci_send_iso_packet_fragments(); 1172 } 1173 #endif 1174 1175 static void acl_handler(uint8_t *packet, uint16_t size){ 1176 1177 // get info 1178 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1179 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1180 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1181 uint16_t acl_length = READ_ACL_LENGTH(packet); 1182 1183 // ignore non-registered handle 1184 if (!conn){ 1185 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1186 return; 1187 } 1188 1189 // assert packet is complete 1190 if ((acl_length + 4u) != size){ 1191 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1192 return; 1193 } 1194 1195 #ifdef ENABLE_CLASSIC 1196 // update idle timestamp 1197 hci_connection_timestamp(conn); 1198 #endif 1199 1200 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1201 hci_stack->host_completed_packets = 1; 1202 conn->num_packets_completed++; 1203 #endif 1204 1205 // handle different packet types 1206 switch (acl_flags & 0x03u) { 1207 1208 case 0x01: // continuation fragment 1209 1210 // sanity checks 1211 if (conn->acl_recombination_pos == 0u) { 1212 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1213 return; 1214 } 1215 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1216 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1217 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1218 conn->acl_recombination_pos = 0; 1219 return; 1220 } 1221 1222 // append fragment payload (header already stored) 1223 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1224 &packet[4], acl_length); 1225 conn->acl_recombination_pos += acl_length; 1226 1227 // forward complete L2CAP packet if complete. 1228 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1229 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1230 // reset recombination buffer 1231 conn->acl_recombination_length = 0; 1232 conn->acl_recombination_pos = 0; 1233 } 1234 break; 1235 1236 case 0x02: { // first fragment 1237 1238 // sanity check 1239 if (conn->acl_recombination_pos) { 1240 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1241 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1242 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1243 } 1244 conn->acl_recombination_pos = 0; 1245 } 1246 1247 // peek into L2CAP packet! 1248 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1249 1250 // compare fragment size to L2CAP packet size 1251 if (acl_length >= (l2cap_length + 4u)){ 1252 // forward fragment as L2CAP packet 1253 hci_emit_acl_packet(packet, acl_length + 4u); 1254 } else { 1255 1256 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1257 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1258 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1259 return; 1260 } 1261 1262 // store first fragment and tweak acl length for complete package 1263 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1264 packet, acl_length + 4u); 1265 conn->acl_recombination_pos = acl_length + 4u; 1266 conn->acl_recombination_length = l2cap_length; 1267 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1268 } 1269 break; 1270 1271 } 1272 default: 1273 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1274 return; 1275 } 1276 1277 // execute main loop 1278 hci_run(); 1279 } 1280 1281 static void hci_connection_stop_timer(hci_connection_t * conn){ 1282 btstack_run_loop_remove_timer(&conn->timeout); 1283 #ifdef ENABLE_CLASSIC 1284 btstack_run_loop_remove_timer(&conn->timeout_sco); 1285 #endif 1286 } 1287 1288 static void hci_shutdown_connection(hci_connection_t *conn){ 1289 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1290 1291 #ifdef ENABLE_CLASSIC 1292 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1293 bd_addr_type_t addr_type = conn->address_type; 1294 #endif 1295 #ifdef HAVE_SCO_TRANSPORT 1296 hci_con_handle_t con_handle = conn->con_handle; 1297 #endif 1298 #endif 1299 1300 hci_connection_stop_timer(conn); 1301 1302 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1303 btstack_memory_hci_connection_free( conn ); 1304 1305 // now it's gone 1306 hci_emit_nr_connections_changed(); 1307 1308 #ifdef ENABLE_CLASSIC 1309 #ifdef ENABLE_SCO_OVER_HCI 1310 // update SCO 1311 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1312 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1313 } 1314 #endif 1315 #ifdef HAVE_SCO_TRANSPORT 1316 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1317 hci_stack->sco_transport->close(con_handle); 1318 } 1319 #endif 1320 #endif 1321 } 1322 1323 #ifdef ENABLE_CLASSIC 1324 1325 static const uint16_t packet_type_sizes[] = { 1326 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1327 HCI_ACL_DH1_SIZE, 0, 0, 0, 1328 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1329 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1330 }; 1331 static const uint8_t packet_type_feature_requirement_bit[] = { 1332 0, // 3 slot packets 1333 1, // 5 slot packets 1334 25, // EDR 2 mpbs 1335 26, // EDR 3 mbps 1336 39, // 3 slot EDR packts 1337 40, // 5 slot EDR packet 1338 }; 1339 static const uint16_t packet_type_feature_packet_mask[] = { 1340 0x0f00, // 3 slot packets 1341 0xf000, // 5 slot packets 1342 0x1102, // EDR 2 mpbs 1343 0x2204, // EDR 3 mbps 1344 0x0300, // 3 slot EDR packts 1345 0x3000, // 5 slot EDR packet 1346 }; 1347 1348 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1349 // enable packet types based on size 1350 uint16_t packet_types = 0; 1351 unsigned int i; 1352 for (i=0;i<16;i++){ 1353 if (packet_type_sizes[i] == 0) continue; 1354 if (packet_type_sizes[i] <= buffer_size){ 1355 packet_types |= 1 << i; 1356 } 1357 } 1358 // disable packet types due to missing local supported features 1359 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1360 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1361 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1362 if (feature_set) continue; 1363 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1364 packet_types &= ~packet_type_feature_packet_mask[i]; 1365 } 1366 // flip bits for "may not be used" 1367 packet_types ^= 0x3306; 1368 return packet_types; 1369 } 1370 1371 uint16_t hci_usable_acl_packet_types(void){ 1372 return hci_stack->packet_types; 1373 } 1374 #endif 1375 1376 uint8_t* hci_get_outgoing_packet_buffer(void){ 1377 // hci packet buffer is >= acl data packet length 1378 return hci_stack->hci_packet_buffer; 1379 } 1380 1381 uint16_t hci_max_acl_data_packet_length(void){ 1382 return hci_stack->acl_data_packet_length; 1383 } 1384 1385 #ifdef ENABLE_CLASSIC 1386 bool hci_extended_sco_link_supported(void){ 1387 // No. 31, byte 3, bit 7 1388 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1389 } 1390 #endif 1391 1392 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1393 // No. 54, byte 6, bit 6 1394 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1395 } 1396 1397 #ifdef ENABLE_CLASSIC 1398 static int gap_ssp_supported(void){ 1399 // No. 51, byte 6, bit 3 1400 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1401 } 1402 #endif 1403 1404 static int hci_classic_supported(void){ 1405 #ifdef ENABLE_CLASSIC 1406 // No. 37, byte 4, bit 5, = No BR/EDR Support 1407 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1408 #else 1409 return 0; 1410 #endif 1411 } 1412 1413 static int hci_le_supported(void){ 1414 #ifdef ENABLE_BLE 1415 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1416 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1417 #else 1418 return 0; 1419 #endif 1420 } 1421 1422 static bool hci_command_supported(uint8_t command_index){ 1423 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1424 } 1425 1426 #ifdef ENABLE_BLE 1427 1428 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1429 static bool hci_extended_advertising_supported(void){ 1430 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1431 } 1432 #endif 1433 1434 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1435 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1436 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1437 } else { 1438 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1439 } 1440 } 1441 1442 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1443 *addr_type = hci_stack->le_own_addr_type; 1444 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1445 } 1446 1447 #ifdef ENABLE_LE_PERIPHERAL 1448 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1449 *addr_type = hci_stack->le_advertisements_own_addr_type; 1450 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1451 }; 1452 #endif 1453 1454 #ifdef ENABLE_LE_CENTRAL 1455 1456 /** 1457 * @brief Get own addr type and address used for LE connections (Central) 1458 */ 1459 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1460 *addr_type = hci_stack->le_connection_own_addr_type; 1461 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1462 } 1463 1464 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1465 1466 uint16_t offset = 3; 1467 uint8_t num_reports = packet[offset]; 1468 offset += 1; 1469 1470 uint16_t i; 1471 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1472 for (i=0; (i<num_reports) && (offset < size);i++){ 1473 // sanity checks on data_length: 1474 uint8_t data_length = packet[offset + 8]; 1475 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1476 if ((offset + 9u + data_length + 1u) > size) return; 1477 // setup event 1478 uint8_t event_size = 10u + data_length; 1479 uint16_t pos = 0; 1480 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1481 event[pos++] = event_size; 1482 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1483 offset += 8; 1484 pos += 8; 1485 event[pos++] = packet[offset + 1 + data_length]; // rssi 1486 event[pos++] = data_length; 1487 offset++; 1488 (void)memcpy(&event[pos], &packet[offset], data_length); 1489 pos += data_length; 1490 offset += data_length + 1u; // rssi 1491 hci_emit_event(event, pos, 1); 1492 } 1493 } 1494 1495 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1496 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1497 uint16_t offset = 3; 1498 uint8_t num_reports = packet[offset++]; 1499 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1500 uint8_t i; 1501 for (i=0; (i<num_reports) && (offset < size);i++){ 1502 // sanity checks on data_length: 1503 uint16_t data_length = packet[offset + 23]; 1504 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1505 if ((offset + 24u + data_length) > size) return; 1506 uint16_t event_type = little_endian_read_16(packet, offset); 1507 offset += 2; 1508 if ((event_type & 0x10) != 0) { 1509 // setup legacy event 1510 uint8_t legacy_event_type; 1511 switch (event_type){ 1512 case 0b0010011: 1513 // ADV_IND 1514 legacy_event_type = 0; 1515 break; 1516 case 0b0010101: 1517 // ADV_DIRECT_IND 1518 legacy_event_type = 1; 1519 break; 1520 case 0b0010010: 1521 // ADV_SCAN_IND 1522 legacy_event_type = 2; 1523 break; 1524 case 0b0010000: 1525 // ADV_NONCONN_IND 1526 legacy_event_type = 3; 1527 break; 1528 case 0b0011011: 1529 case 0b0011010: 1530 // SCAN_RSP 1531 legacy_event_type = 4; 1532 break; 1533 default: 1534 legacy_event_type = 0; 1535 break; 1536 } 1537 uint16_t pos = 0; 1538 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1539 event[pos++] = 10u + data_length; 1540 event[pos++] = legacy_event_type; 1541 // copy address type + address 1542 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1543 offset += 7; 1544 pos += 7; 1545 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1546 offset += 4; 1547 // copy rssi 1548 event[pos++] = packet[offset++]; 1549 // skip periodic advertising interval and direct address 1550 offset += 9; 1551 // copy data len + data; 1552 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1553 pos += 1 +data_length; 1554 offset += 1+ data_length; 1555 hci_emit_event(event, pos, 1); 1556 } else { 1557 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1558 uint8_t report_len = 24 + data_length; 1559 event[1] = report_len; 1560 little_endian_store_16(event, 2, event_type); 1561 memcpy(&event[4], &packet[offset], report_len); 1562 offset += report_len; 1563 hci_emit_event(event, 2 + report_len, 1); 1564 } 1565 } 1566 } 1567 #endif 1568 1569 #endif 1570 #endif 1571 1572 #ifdef ENABLE_BLE 1573 #ifdef ENABLE_LE_PERIPHERAL 1574 static void hci_update_advertisements_enabled_for_current_roles(void){ 1575 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1576 // get number of active le slave connections 1577 int num_slave_connections = 0; 1578 btstack_linked_list_iterator_t it; 1579 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1580 while (btstack_linked_list_iterator_has_next(&it)){ 1581 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1582 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1583 if (con->state != OPEN) continue; 1584 if (con->role != HCI_ROLE_SLAVE) continue; 1585 if (!hci_is_le_connection(con)) continue; 1586 num_slave_connections++; 1587 } 1588 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1589 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1590 } else { 1591 hci_stack->le_advertisements_enabled_for_current_roles = false; 1592 } 1593 } 1594 #endif 1595 #endif 1596 1597 #ifdef ENABLE_CLASSIC 1598 static void gap_run_set_local_name(void){ 1599 hci_reserve_packet_buffer(); 1600 uint8_t * packet = hci_stack->hci_packet_buffer; 1601 // construct HCI Command and send 1602 uint16_t opcode = hci_write_local_name.opcode; 1603 hci_stack->last_cmd_opcode = opcode; 1604 packet[0] = opcode & 0xff; 1605 packet[1] = opcode >> 8; 1606 packet[2] = DEVICE_NAME_LEN; 1607 memset(&packet[3], 0, DEVICE_NAME_LEN); 1608 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1609 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1610 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1611 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1612 // expand '00:00:00:00:00:00' in name with bd_addr 1613 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1614 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1615 } 1616 1617 static void gap_run_set_eir_data(void){ 1618 hci_reserve_packet_buffer(); 1619 uint8_t * packet = hci_stack->hci_packet_buffer; 1620 // construct HCI Command in-place and send 1621 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1622 hci_stack->last_cmd_opcode = opcode; 1623 uint16_t offset = 0; 1624 packet[offset++] = opcode & 0xff; 1625 packet[offset++] = opcode >> 8; 1626 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1627 packet[offset++] = 0; // FEC not required 1628 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1629 if (hci_stack->eir_data){ 1630 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1631 ad_context_t context; 1632 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1633 uint8_t data_type = ad_iterator_get_data_type(&context); 1634 uint8_t size = ad_iterator_get_data_len(&context); 1635 const uint8_t *data = ad_iterator_get_data(&context); 1636 // copy item 1637 packet[offset++] = size + 1; 1638 packet[offset++] = data_type; 1639 memcpy(&packet[offset], data, size); 1640 // update name item 1641 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1642 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1643 } 1644 offset += size; 1645 } 1646 } else { 1647 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1648 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1649 packet[offset++] = bytes_to_copy + 1; 1650 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1651 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1652 // expand '00:00:00:00:00:00' in name with bd_addr 1653 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1654 } 1655 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1656 } 1657 1658 static void hci_run_gap_tasks_classic(void){ 1659 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1660 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1661 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1662 return; 1663 } 1664 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1665 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1666 gap_run_set_local_name(); 1667 return; 1668 } 1669 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1670 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1671 gap_run_set_eir_data(); 1672 return; 1673 } 1674 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1675 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1676 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1677 return; 1678 } 1679 // write page scan activity 1680 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1681 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1682 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1683 return; 1684 } 1685 // write page scan type 1686 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1687 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1688 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1689 return; 1690 } 1691 // write page timeout 1692 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1693 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1694 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1695 return; 1696 } 1697 // send scan enable 1698 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1699 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1700 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1701 return; 1702 } 1703 // send write scan activity 1704 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1705 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1706 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1707 return; 1708 } 1709 } 1710 #endif 1711 1712 #ifndef HAVE_HOST_CONTROLLER_API 1713 1714 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1715 if (!hci_stack->config) return 0; 1716 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1717 // Limit baud rate for Broadcom chipsets to 3 mbps 1718 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1719 baud_rate = 3000000; 1720 } 1721 return baud_rate; 1722 } 1723 1724 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1725 UNUSED(ds); 1726 1727 switch (hci_stack->substate){ 1728 case HCI_INIT_W4_SEND_RESET: 1729 log_info("Resend HCI Reset"); 1730 hci_stack->substate = HCI_INIT_SEND_RESET; 1731 hci_stack->num_cmd_packets = 1; 1732 hci_run(); 1733 break; 1734 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1735 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1736 if (hci_stack->hci_transport->reset_link){ 1737 hci_stack->hci_transport->reset_link(); 1738 } 1739 1740 /* fall through */ 1741 1742 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1743 log_info("Resend HCI Reset - CSR Warm Boot"); 1744 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1745 hci_stack->num_cmd_packets = 1; 1746 hci_run(); 1747 break; 1748 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1749 if (hci_stack->hci_transport->set_baudrate){ 1750 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1751 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1752 hci_stack->hci_transport->set_baudrate(baud_rate); 1753 } 1754 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1755 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1756 if (hci_stack->hci_transport->reset_link){ 1757 log_info("Link Reset"); 1758 hci_stack->hci_transport->reset_link(); 1759 } 1760 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1761 hci_run(); 1762 } 1763 break; 1764 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1765 // otherwise continue 1766 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1767 hci_send_cmd(&hci_read_local_supported_commands); 1768 break; 1769 default: 1770 break; 1771 } 1772 } 1773 #endif 1774 1775 static void hci_initializing_next_state(void){ 1776 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1777 } 1778 1779 static void hci_init_done(void){ 1780 // done. tell the app 1781 log_info("hci_init_done -> HCI_STATE_WORKING"); 1782 hci_stack->state = HCI_STATE_WORKING; 1783 hci_emit_state(); 1784 } 1785 1786 // assumption: hci_can_send_command_packet_now() == true 1787 static void hci_initializing_run(void){ 1788 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1789 1790 if (!hci_can_send_command_packet_now()) return; 1791 1792 #ifndef HAVE_HOST_CONTROLLER_API 1793 bool need_baud_change = hci_stack->config 1794 && hci_stack->chipset 1795 && hci_stack->chipset->set_baudrate_command 1796 && hci_stack->hci_transport->set_baudrate 1797 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1798 #endif 1799 1800 switch (hci_stack->substate){ 1801 case HCI_INIT_SEND_RESET: 1802 hci_state_reset(); 1803 1804 #ifndef HAVE_HOST_CONTROLLER_API 1805 // prepare reset if command complete not received in 100ms 1806 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1807 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1808 btstack_run_loop_add_timer(&hci_stack->timeout); 1809 #endif 1810 // send command 1811 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1812 hci_send_cmd(&hci_reset); 1813 break; 1814 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1815 hci_send_cmd(&hci_read_local_version_information); 1816 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1817 break; 1818 1819 #ifndef HAVE_HOST_CONTROLLER_API 1820 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1821 hci_state_reset(); 1822 // prepare reset if command complete not received in 100ms 1823 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1824 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1825 btstack_run_loop_add_timer(&hci_stack->timeout); 1826 // send command 1827 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1828 hci_send_cmd(&hci_reset); 1829 break; 1830 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1831 hci_state_reset(); 1832 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1833 hci_send_cmd(&hci_reset); 1834 break; 1835 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1836 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1837 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1838 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1839 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1840 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1841 break; 1842 } 1843 case HCI_INIT_SET_BD_ADDR: 1844 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1845 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1846 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1847 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1848 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1849 break; 1850 case HCI_INIT_SEND_READ_LOCAL_NAME: 1851 #ifdef ENABLE_CLASSIC 1852 hci_send_cmd(&hci_read_local_name); 1853 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1854 break; 1855 #endif 1856 /* fall through */ 1857 1858 case HCI_INIT_SEND_BAUD_CHANGE: 1859 if (need_baud_change) { 1860 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1861 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1862 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1863 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1864 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1865 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1866 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1867 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1868 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1869 btstack_run_loop_add_timer(&hci_stack->timeout); 1870 } 1871 break; 1872 } 1873 1874 /* fall through */ 1875 1876 case HCI_INIT_CUSTOM_INIT: 1877 // Custom initialization 1878 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1879 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1880 bool send_cmd = false; 1881 switch (hci_stack->chipset_result){ 1882 case BTSTACK_CHIPSET_VALID_COMMAND: 1883 send_cmd = true; 1884 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1885 break; 1886 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1887 send_cmd = true; 1888 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1889 log_info("CSR Warm Boot"); 1890 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1891 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1892 btstack_run_loop_add_timer(&hci_stack->timeout); 1893 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1894 && hci_stack->config 1895 && hci_stack->chipset 1896 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1897 && hci_stack->hci_transport->set_baudrate 1898 && hci_transport_uart_get_main_baud_rate()){ 1899 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1900 } else { 1901 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1902 } 1903 break; 1904 default: 1905 break; 1906 } 1907 1908 if (send_cmd){ 1909 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1910 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1911 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1912 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1913 break; 1914 } 1915 log_info("Init script done"); 1916 1917 // Init script download on Broadcom chipsets causes: 1918 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1919 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1920 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1921 1922 // - baud rate to reset, restore UART baud rate if needed 1923 if (need_baud_change) { 1924 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1925 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1926 hci_stack->hci_transport->set_baudrate(baud_rate); 1927 } 1928 1929 uint16_t bcm_delay_ms = 300; 1930 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1931 // -> Work around: wait here. 1932 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1933 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1934 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1935 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1936 btstack_run_loop_add_timer(&hci_stack->timeout); 1937 break; 1938 } 1939 } 1940 #endif 1941 /* fall through */ 1942 1943 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1944 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1945 hci_send_cmd(&hci_read_local_supported_commands); 1946 break; 1947 case HCI_INIT_READ_BD_ADDR: 1948 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1949 hci_send_cmd(&hci_read_bd_addr); 1950 break; 1951 case HCI_INIT_READ_BUFFER_SIZE: 1952 // only read buffer size if supported 1953 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1954 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1955 hci_send_cmd(&hci_read_buffer_size); 1956 break; 1957 } 1958 1959 /* fall through */ 1960 1961 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1962 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1963 hci_send_cmd(&hci_read_local_supported_features); 1964 break; 1965 1966 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1967 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1968 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1969 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1970 break; 1971 case HCI_INIT_HOST_BUFFER_SIZE: 1972 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1973 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1974 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1975 break; 1976 #endif 1977 1978 case HCI_INIT_SET_EVENT_MASK: 1979 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1980 if (hci_le_supported()){ 1981 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1982 } else { 1983 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1984 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1985 } 1986 break; 1987 1988 case HCI_INIT_SET_EVENT_MASK_2: 1989 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 1990 // setting Event Mask 2 causes Controller to drop Encryption Change events. 1991 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 1992 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 1993 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1994 // Encryption Change Event v2 - bit 25 1995 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1996 break; 1997 } 1998 1999 #ifdef ENABLE_CLASSIC 2000 /* fall through */ 2001 2002 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2003 if (hci_classic_supported() && gap_ssp_supported()){ 2004 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2005 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2006 break; 2007 } 2008 2009 /* fall through */ 2010 2011 case HCI_INIT_WRITE_INQUIRY_MODE: 2012 if (hci_classic_supported()){ 2013 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2014 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2015 break; 2016 } 2017 2018 /* fall through */ 2019 2020 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2021 // skip write secure connections host support if not supported or disabled 2022 if (hci_classic_supported() && hci_stack->secure_connections_enable 2023 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2024 hci_stack->secure_connections_active = true; 2025 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2026 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2027 break; 2028 } 2029 2030 /* fall through */ 2031 2032 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2033 // skip set min encryption key size 2034 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2035 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2036 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2037 break; 2038 } 2039 2040 #ifdef ENABLE_SCO_OVER_HCI 2041 /* fall through */ 2042 2043 // only sent if ENABLE_SCO_OVER_HCI is defined 2044 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2045 // skip write synchronous flow control if not supported 2046 if (hci_classic_supported() 2047 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2048 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2049 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2050 break; 2051 } 2052 /* fall through */ 2053 2054 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2055 // skip write default erroneous data reporting if not supported 2056 if (hci_classic_supported() 2057 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2058 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2059 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2060 break; 2061 } 2062 #endif 2063 2064 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2065 /* fall through */ 2066 2067 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2068 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2069 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2070 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2071 #ifdef ENABLE_SCO_OVER_HCI 2072 log_info("BCM: Route SCO data via HCI transport"); 2073 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2074 #endif 2075 #ifdef ENABLE_SCO_OVER_PCM 2076 log_info("BCM: Route SCO data via PCM interface"); 2077 #ifdef ENABLE_BCM_PCM_WBS 2078 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2079 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2080 #else 2081 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2082 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2083 #endif 2084 #endif 2085 break; 2086 } 2087 #endif 2088 2089 #ifdef ENABLE_SCO_OVER_PCM 2090 /* fall through */ 2091 2092 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2093 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2094 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2095 log_info("BCM: Config PCM interface for I2S"); 2096 #ifdef ENABLE_BCM_PCM_WBS 2097 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2098 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2099 #else 2100 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2101 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2102 #endif 2103 break; 2104 } 2105 #endif 2106 #endif 2107 2108 #ifdef ENABLE_BLE 2109 /* fall through */ 2110 2111 // LE INIT 2112 case HCI_INIT_LE_READ_BUFFER_SIZE: 2113 if (hci_le_supported()){ 2114 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2115 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2116 hci_send_cmd(&hci_le_read_buffer_size_v2); 2117 } else { 2118 hci_send_cmd(&hci_le_read_buffer_size); 2119 } 2120 break; 2121 } 2122 2123 /* fall through */ 2124 2125 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2126 // skip write le host if not supported (e.g. on LE only EM9301) 2127 if (hci_le_supported() 2128 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2129 // LE Supported Host = 1, Simultaneous Host = 0 2130 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2131 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2132 break; 2133 } 2134 2135 /* fall through */ 2136 2137 case HCI_INIT_LE_SET_EVENT_MASK: 2138 if (hci_le_supported()){ 2139 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2140 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2141 break; 2142 } 2143 #endif 2144 2145 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2146 /* fall through */ 2147 2148 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2149 if (hci_le_supported() 2150 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2151 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2152 hci_send_cmd(&hci_le_read_maximum_data_length); 2153 break; 2154 } 2155 2156 /* fall through */ 2157 2158 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2159 if (hci_le_supported() 2160 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2161 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2162 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2163 break; 2164 } 2165 #endif 2166 2167 #ifdef ENABLE_LE_CENTRAL 2168 /* fall through */ 2169 2170 case HCI_INIT_READ_WHITE_LIST_SIZE: 2171 if (hci_le_supported()){ 2172 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2173 hci_send_cmd(&hci_le_read_white_list_size); 2174 break; 2175 } 2176 2177 #endif 2178 2179 #ifdef ENABLE_LE_PERIPHERAL 2180 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2181 /* fall through */ 2182 2183 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2184 if (hci_extended_advertising_supported()){ 2185 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2186 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2187 break; 2188 } 2189 #endif 2190 #endif 2191 /* fall through */ 2192 2193 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2194 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2195 if (hci_le_supported()) { 2196 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2197 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2198 break; 2199 } 2200 #endif 2201 2202 /* fall through */ 2203 2204 case HCI_INIT_DONE: 2205 hci_stack->substate = HCI_INIT_DONE; 2206 // main init sequence complete 2207 #ifdef ENABLE_CLASSIC 2208 // check if initial Classic GAP Tasks are completed 2209 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2210 hci_run_gap_tasks_classic(); 2211 break; 2212 } 2213 #endif 2214 #ifdef ENABLE_BLE 2215 #ifdef ENABLE_LE_CENTRAL 2216 // check if initial LE GAP Tasks are completed 2217 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2218 hci_run_general_gap_le(); 2219 break; 2220 } 2221 #endif 2222 #endif 2223 hci_init_done(); 2224 break; 2225 2226 default: 2227 return; 2228 } 2229 } 2230 2231 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2232 bool command_completed = false; 2233 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2234 uint16_t opcode = little_endian_read_16(packet,3); 2235 if (opcode == hci_stack->last_cmd_opcode){ 2236 command_completed = true; 2237 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2238 } else { 2239 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2240 } 2241 } 2242 2243 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2244 uint8_t status = packet[2]; 2245 uint16_t opcode = little_endian_read_16(packet,4); 2246 if (opcode == hci_stack->last_cmd_opcode){ 2247 if (status){ 2248 command_completed = true; 2249 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2250 } else { 2251 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2252 } 2253 } else { 2254 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2255 } 2256 } 2257 #ifndef HAVE_HOST_CONTROLLER_API 2258 // Vendor == CSR 2259 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2260 // TODO: track actual command 2261 command_completed = true; 2262 } 2263 2264 // Vendor == Toshiba 2265 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2266 // TODO: track actual command 2267 command_completed = true; 2268 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2269 hci_stack->num_cmd_packets = 1; 2270 } 2271 #endif 2272 2273 return command_completed; 2274 } 2275 2276 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2277 2278 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2279 2280 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2281 2282 #ifndef HAVE_HOST_CONTROLLER_API 2283 2284 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2285 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2286 // 2287 // HCI Reset 2288 // Timeout 100 ms 2289 // HCI Reset 2290 // Command Complete Reset 2291 // HCI Read Local Version Information 2292 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2293 // hang... 2294 // 2295 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2296 if (!command_completed 2297 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2298 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2299 2300 uint16_t opcode = little_endian_read_16(packet,3); 2301 if (opcode == hci_reset.opcode){ 2302 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2303 return; 2304 } 2305 } 2306 2307 // CSR & H5 2308 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2309 if (!command_completed 2310 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2311 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2312 2313 uint16_t opcode = little_endian_read_16(packet,3); 2314 if (opcode == hci_reset.opcode){ 2315 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2316 return; 2317 } 2318 } 2319 2320 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2321 // fix: Correct substate and behave as command below 2322 if (command_completed){ 2323 switch (hci_stack->substate){ 2324 case HCI_INIT_SEND_RESET: 2325 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2326 break; 2327 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2328 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2329 break; 2330 default: 2331 break; 2332 } 2333 } 2334 2335 #endif 2336 2337 if (!command_completed) return; 2338 2339 bool need_baud_change = false; 2340 bool need_addr_change = false; 2341 2342 #ifndef HAVE_HOST_CONTROLLER_API 2343 need_baud_change = hci_stack->config 2344 && hci_stack->chipset 2345 && hci_stack->chipset->set_baudrate_command 2346 && hci_stack->hci_transport->set_baudrate 2347 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2348 2349 need_addr_change = hci_stack->custom_bd_addr_set 2350 && hci_stack->chipset 2351 && hci_stack->chipset->set_bd_addr_command; 2352 #endif 2353 2354 switch(hci_stack->substate){ 2355 2356 #ifndef HAVE_HOST_CONTROLLER_API 2357 case HCI_INIT_SEND_RESET: 2358 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2359 // fix: just correct substate and behave as command below 2360 2361 /* fall through */ 2362 #endif 2363 2364 case HCI_INIT_W4_SEND_RESET: 2365 btstack_run_loop_remove_timer(&hci_stack->timeout); 2366 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2367 return; 2368 2369 #ifndef HAVE_HOST_CONTROLLER_API 2370 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2371 // for STLC2500D, baud rate change already happened. 2372 // for others, baud rate gets changed now 2373 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2374 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2375 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2376 hci_stack->hci_transport->set_baudrate(baud_rate); 2377 } 2378 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2379 return; 2380 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2381 btstack_run_loop_remove_timer(&hci_stack->timeout); 2382 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2383 return; 2384 case HCI_INIT_W4_CUSTOM_INIT: 2385 // repeat custom init 2386 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2387 return; 2388 #endif 2389 2390 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2391 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2392 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2393 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2394 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2395 return; 2396 } 2397 if (need_addr_change){ 2398 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2399 return; 2400 } 2401 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2402 return; 2403 #ifndef HAVE_HOST_CONTROLLER_API 2404 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2405 if (need_baud_change){ 2406 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2407 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2408 hci_stack->hci_transport->set_baudrate(baud_rate); 2409 } 2410 if (need_addr_change){ 2411 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2412 return; 2413 } 2414 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2415 return; 2416 case HCI_INIT_W4_SET_BD_ADDR: 2417 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2418 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2419 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2420 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2421 return; 2422 } 2423 // skipping st warm boot 2424 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2425 return; 2426 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2427 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2428 return; 2429 #endif 2430 2431 case HCI_INIT_DONE: 2432 // set state if we came here by fall through 2433 hci_stack->substate = HCI_INIT_DONE; 2434 return; 2435 2436 default: 2437 break; 2438 } 2439 hci_initializing_next_state(); 2440 } 2441 2442 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2443 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2444 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2445 // check if we have been aware of the HCI connection 2446 switch (conn->state){ 2447 case SENT_CREATE_CONNECTION: 2448 case RECEIVED_CONNECTION_REQUEST: 2449 break; 2450 default: 2451 return; 2452 } 2453 2454 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2455 bd_addr_t bd_address; 2456 (void)memcpy(&bd_address, conn->address, 6); 2457 2458 #ifdef ENABLE_CLASSIC 2459 // cache needed data 2460 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2461 #endif 2462 2463 // connection failed, remove entry 2464 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2465 btstack_memory_hci_connection_free( conn ); 2466 2467 #ifdef ENABLE_CLASSIC 2468 // notify client if dedicated bonding 2469 if (notify_dedicated_bonding_failed){ 2470 log_info("hci notify_dedicated_bonding_failed"); 2471 hci_emit_dedicated_bonding_result(bd_address, status); 2472 } 2473 2474 // if authentication error, also delete link key 2475 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2476 gap_drop_link_key_for_bd_addr(bd_address); 2477 } 2478 #else 2479 UNUSED(status); 2480 #endif 2481 } 2482 2483 #ifdef ENABLE_CLASSIC 2484 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2485 // SSP Controller 2486 if (features[6] & (1 << 3)){ 2487 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2488 } 2489 // eSCO 2490 if (features[3] & (1<<7)){ 2491 conn->remote_supported_features[0] |= 1; 2492 } 2493 // Extended features 2494 if (features[7] & (1<<7)){ 2495 conn->remote_supported_features[0] |= 2; 2496 } 2497 } 2498 2499 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2500 // SSP Host 2501 if (features[0] & (1 << 0)){ 2502 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2503 } 2504 // SC Host 2505 if (features[0] & (1 << 3)){ 2506 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2507 } 2508 } 2509 2510 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2511 // SC Controller 2512 if (features[1] & (1 << 0)){ 2513 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2514 } 2515 } 2516 2517 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2518 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2519 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2520 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2521 if (conn->bonding_flags & BONDING_DEDICATED){ 2522 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2523 } 2524 } 2525 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2526 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2527 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2528 } 2529 2530 #endif 2531 2532 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2533 // handle BT initialization 2534 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2535 hci_initializing_event_handler(packet, size); 2536 } 2537 2538 // help with BT sleep 2539 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2540 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2541 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2542 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2543 hci_initializing_next_state(); 2544 } 2545 } 2546 2547 #ifdef ENABLE_CLASSIC 2548 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2549 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2550 conn->encryption_key_size = encryption_key_size; 2551 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2552 2553 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2554 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2555 conn->bonding_flags &= ~BONDING_DEDICATED; 2556 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2557 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2558 return; 2559 } 2560 2561 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2562 conn->requested_security_level = LEVEL_0; 2563 hci_emit_security_level(conn->con_handle, security_level); 2564 return; 2565 } 2566 2567 // Request remote features if not already done 2568 hci_trigger_remote_features_for_connection(conn); 2569 2570 // Request Authentication if not already done 2571 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2572 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2573 } 2574 #endif 2575 2576 static void hci_store_local_supported_commands(const uint8_t * packet){ 2577 // create mapping table 2578 #define X(name, offset, bit) { offset, bit }, 2579 static struct { 2580 uint8_t byte_offset; 2581 uint8_t bit_position; 2582 } supported_hci_commands_map [] = { 2583 SUPPORTED_HCI_COMMANDS 2584 }; 2585 #undef X 2586 2587 // create names for debug purposes 2588 #ifdef ENABLE_LOG_DEBUG 2589 #define X(name, offset, bit) #name, 2590 static const char * command_names[] = { 2591 SUPPORTED_HCI_COMMANDS 2592 }; 2593 #undef X 2594 #endif 2595 2596 hci_stack->local_supported_commands = 0; 2597 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2598 uint16_t i; 2599 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2600 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2601 #ifdef ENABLE_LOG_DEBUG 2602 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); 2603 #else 2604 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2605 #endif 2606 hci_stack->local_supported_commands |= (1LU << i); 2607 } 2608 } 2609 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2610 } 2611 2612 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2613 UNUSED(size); 2614 2615 uint16_t manufacturer; 2616 #ifdef ENABLE_CLASSIC 2617 hci_con_handle_t handle; 2618 hci_connection_t * conn; 2619 #endif 2620 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2621 uint8_t status; 2622 #endif 2623 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2624 le_audio_cig_t * cig; 2625 #endif 2626 2627 // get num cmd packets - limit to 1 to reduce complexity 2628 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2629 2630 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2631 switch (opcode){ 2632 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2633 if (packet[5]) break; 2634 // terminate, name 248 chars 2635 packet[6+248] = 0; 2636 log_info("local name: %s", &packet[6]); 2637 break; 2638 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2639 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2640 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2641 uint16_t acl_len = little_endian_read_16(packet, 6); 2642 uint16_t sco_len = packet[8]; 2643 2644 // determine usable ACL/SCO payload size 2645 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2646 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2647 2648 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2649 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2650 2651 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2652 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2653 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2654 } 2655 break; 2656 case HCI_OPCODE_HCI_READ_RSSI: 2657 if (packet[5] == ERROR_CODE_SUCCESS){ 2658 uint8_t event[5]; 2659 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2660 event[1] = 3; 2661 (void)memcpy(&event[2], &packet[6], 3); 2662 hci_emit_event(event, sizeof(event), 1); 2663 } 2664 break; 2665 #ifdef ENABLE_BLE 2666 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2667 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2668 hci_stack->le_iso_packets_total_num = packet[11]; 2669 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2670 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2671 2672 /* fall through */ 2673 2674 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2675 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2676 hci_stack->le_acl_packets_total_num = packet[8]; 2677 // determine usable ACL payload size 2678 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2679 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2680 } 2681 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); 2682 break; 2683 #endif 2684 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2685 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2686 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2687 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2688 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); 2689 break; 2690 #endif 2691 #ifdef ENABLE_LE_CENTRAL 2692 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2693 hci_stack->le_whitelist_capacity = packet[6]; 2694 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2695 break; 2696 #endif 2697 #ifdef ENABLE_LE_PERIPHERAL 2698 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2699 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2700 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2701 break; 2702 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2703 if (hci_stack->le_advertising_set_in_current_command != 0) { 2704 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2705 hci_stack->le_advertising_set_in_current_command = 0; 2706 if (advertising_set == NULL) break; 2707 uint8_t adv_status = packet[6]; 2708 uint8_t tx_power = packet[7]; 2709 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 }; 2710 if (adv_status == 0){ 2711 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2712 } 2713 hci_emit_event(event, sizeof(event), 1); 2714 } 2715 break; 2716 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2717 if (hci_stack->le_advertising_set_in_current_command != 0) { 2718 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2719 hci_stack->le_advertising_set_in_current_command = 0; 2720 if (advertising_set == NULL) break; 2721 uint8_t adv_status = packet[5]; 2722 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2723 if (adv_status == 0){ 2724 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2725 } 2726 hci_emit_event(event, sizeof(event), 1); 2727 } 2728 break; 2729 #endif 2730 #endif 2731 case HCI_OPCODE_HCI_READ_BD_ADDR: 2732 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2733 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)); 2734 #ifdef ENABLE_CLASSIC 2735 if (hci_stack->link_key_db){ 2736 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2737 } 2738 #endif 2739 break; 2740 #ifdef ENABLE_CLASSIC 2741 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2742 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2743 break; 2744 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2745 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2746 if (status == ERROR_CODE_SUCCESS) { 2747 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2748 } else { 2749 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2750 } 2751 break; 2752 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2753 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2754 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2755 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2756 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2757 hci_emit_event(event, sizeof(event), 1); 2758 } 2759 break; 2760 #endif 2761 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2762 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2763 2764 #ifdef ENABLE_CLASSIC 2765 // determine usable ACL packet types based on host buffer size and supported features 2766 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2767 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2768 #endif 2769 // Classic/LE 2770 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2771 break; 2772 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2773 manufacturer = little_endian_read_16(packet, 10); 2774 // map Cypress to Broadcom 2775 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2776 log_info("Treat Cypress as Broadcom"); 2777 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2778 little_endian_store_16(packet, 10, manufacturer); 2779 } 2780 hci_stack->manufacturer = manufacturer; 2781 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2782 break; 2783 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2784 hci_store_local_supported_commands(packet); 2785 break; 2786 #ifdef ENABLE_CLASSIC 2787 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2788 if (packet[5]) return; 2789 hci_stack->synchronous_flow_control_enabled = 1; 2790 break; 2791 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2792 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2793 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2794 conn = hci_connection_for_handle(handle); 2795 if (conn != NULL) { 2796 uint8_t key_size = 0; 2797 if (status == 0){ 2798 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2799 log_info("Handle %04x key Size: %u", handle, key_size); 2800 } else { 2801 key_size = 1; 2802 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2803 } 2804 hci_handle_read_encryption_key_size_complete(conn, key_size); 2805 } 2806 break; 2807 // assert pairing complete event is emitted. 2808 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2809 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2810 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2811 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2812 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2813 // lookup connection by gap pairing addr 2814 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2815 if (conn == NULL) break; 2816 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2817 break; 2818 2819 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2820 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2821 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2822 uint8_t event[67]; 2823 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2824 event[1] = 65; 2825 (void)memset(&event[2], 0, 65); 2826 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2827 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2828 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2829 event[2] = 3; 2830 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2831 } else { 2832 event[2] = 1; 2833 } 2834 } 2835 hci_emit_event(event, sizeof(event), 0); 2836 break; 2837 } 2838 2839 // note: only needed if user does not provide OOB data 2840 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2841 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2842 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2843 if (conn == NULL) break; 2844 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2845 break; 2846 #endif 2847 #endif 2848 #ifdef ENABLE_BLE 2849 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2850 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 2851 // lookup CIG 2852 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2853 if (cig != NULL){ 2854 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2855 uint8_t i = 0; 2856 if (status == ERROR_CODE_SUCCESS){ 2857 // assign CIS handles to pre-allocated CIS 2858 btstack_linked_list_iterator_t it; 2859 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2860 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 2861 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2862 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 2863 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 2864 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 2865 iso_stream->con_handle = cis_handle; 2866 cig->cis_con_handles[i] = cis_handle; 2867 i++; 2868 } 2869 } 2870 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 2871 hci_emit_cig_created(cig, status); 2872 } else { 2873 hci_emit_cig_created(cig, status); 2874 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 2875 } 2876 } 2877 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2878 break; 2879 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2880 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2881 if (status != ERROR_CODE_SUCCESS){ 2882 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2883 } 2884 break; 2885 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2886 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2887 if (status != ERROR_CODE_SUCCESS){ 2888 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 2889 } 2890 break; 2891 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2892 // lookup BIG by state 2893 btstack_linked_list_iterator_t it; 2894 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2895 while (btstack_linked_list_iterator_has_next(&it)) { 2896 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2897 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2898 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2899 if (status == ERROR_CODE_SUCCESS){ 2900 big->state_vars.next_bis++; 2901 if (big->state_vars.next_bis == big->num_bis){ 2902 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2903 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2904 } else { 2905 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2906 } 2907 } else { 2908 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2909 big->state_vars.status = status; 2910 } 2911 return; 2912 } 2913 } 2914 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2915 while (btstack_linked_list_iterator_has_next(&it)) { 2916 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2917 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2918 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2919 if (status == ERROR_CODE_SUCCESS){ 2920 big_sync->state_vars.next_bis++; 2921 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2922 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2923 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2924 } else { 2925 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2926 } 2927 } else { 2928 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2929 big_sync->state_vars.status = status; 2930 } 2931 return; 2932 } 2933 } 2934 // Lookup CIS via active group operation 2935 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 2936 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 2937 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2938 2939 // lookup CIS by state 2940 btstack_linked_list_iterator_t it; 2941 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 2942 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2943 while (btstack_linked_list_iterator_has_next(&it)){ 2944 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 2945 handle = iso_stream->con_handle; 2946 switch (iso_stream->state){ 2947 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 2948 if (status != ERROR_CODE_SUCCESS){ 2949 hci_iso_stream_finalize(iso_stream); 2950 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2951 break; 2952 } 2953 if (iso_stream->max_sdu_c_to_p > 0){ 2954 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 2955 } else { 2956 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2957 } 2958 break; 2959 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 2960 if (status != ERROR_CODE_SUCCESS){ 2961 hci_iso_stream_finalize(iso_stream); 2962 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, status); 2963 break; 2964 } 2965 hci_emit_cis_created(HCI_ISO_GROUP_ID_SINGLE_CIS, handle, ERROR_CODE_SUCCESS); 2966 break; 2967 default: 2968 break; 2969 } 2970 } 2971 } else { 2972 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 2973 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 2974 if (cig != NULL) { 2975 // emit cis created if all ISO Paths have been created 2976 // assume we are central 2977 uint8_t cis_index = cig->state_vars.next_cis >> 1; 2978 uint8_t cis_direction = cig->state_vars.next_cis & 1; 2979 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 2980 // if outgoing has been setup, or incoming was setup but outgoing not required 2981 if ((cis_direction == 1) || (outgoing_needed == false)){ 2982 hci_emit_cis_created(cig->cig_id, cig->cis_con_handles[cis_index], status); 2983 } 2984 // next state 2985 cig->state_vars.next_cis++; 2986 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 2987 } 2988 } 2989 } 2990 break; 2991 } 2992 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 2993 // lookup BIG by state 2994 btstack_linked_list_iterator_t it; 2995 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2996 while (btstack_linked_list_iterator_has_next(&it)) { 2997 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2998 uint8_t big_handle = big_sync->big_handle; 2999 switch (big_sync->state){ 3000 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3001 btstack_linked_list_iterator_remove(&it); 3002 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3003 return; 3004 default: 3005 btstack_linked_list_iterator_remove(&it); 3006 hci_emit_big_sync_stopped(big_handle); 3007 return; 3008 } 3009 } 3010 break; 3011 } 3012 #endif 3013 #endif 3014 default: 3015 break; 3016 } 3017 } 3018 3019 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3020 UNUSED(size); 3021 3022 // get num cmd packets - limit to 1 to reduce complexity 3023 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3024 3025 // get opcode and command status 3026 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3027 3028 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3029 uint8_t status = hci_event_command_status_get_status(packet); 3030 #endif 3031 3032 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3033 bd_addr_type_t addr_type; 3034 #endif 3035 3036 switch (opcode){ 3037 #ifdef ENABLE_CLASSIC 3038 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3039 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3040 #endif 3041 #ifdef ENABLE_LE_CENTRAL 3042 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3043 #endif 3044 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3045 addr_type = hci_stack->outgoing_addr_type; 3046 3047 // reset outgoing address info 3048 memset(hci_stack->outgoing_addr, 0, 6); 3049 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3050 3051 // on error 3052 if (status != ERROR_CODE_SUCCESS){ 3053 #ifdef ENABLE_LE_CENTRAL 3054 if (hci_is_le_connection_type(addr_type)){ 3055 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3056 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3057 } 3058 #endif 3059 // error => outgoing connection failed 3060 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 3061 if (conn != NULL){ 3062 hci_handle_connection_failed(conn, status); 3063 } 3064 } 3065 break; 3066 #endif 3067 #ifdef ENABLE_CLASSIC 3068 case HCI_OPCODE_HCI_INQUIRY: 3069 if (status == ERROR_CODE_SUCCESS) { 3070 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3071 } else { 3072 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3073 } 3074 break; 3075 #endif 3076 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3077 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3078 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3079 if (status == ERROR_CODE_SUCCESS){ 3080 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3081 } else { 3082 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3083 } 3084 break; 3085 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3086 default: 3087 break; 3088 } 3089 } 3090 3091 #ifdef ENABLE_BLE 3092 static void event_handle_le_connection_complete(const uint8_t * packet){ 3093 bd_addr_t addr; 3094 bd_addr_type_t addr_type; 3095 hci_connection_t * conn; 3096 3097 // Connection management 3098 reverse_bd_addr(&packet[8], addr); 3099 addr_type = (bd_addr_type_t)packet[7]; 3100 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 3101 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3102 3103 #ifdef ENABLE_LE_CENTRAL 3104 // handle error: error is reported only to the initiator -> outgoing connection 3105 if (packet[3]){ 3106 3107 // handle cancelled outgoing connection 3108 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3109 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3110 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3111 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3112 // reset state 3113 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3114 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3115 // get outgoing connection conn struct for direct connect 3116 conn = gap_get_outgoing_connection(); 3117 } 3118 3119 // outgoing le connection establishment is done 3120 if (conn){ 3121 // remove entry 3122 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3123 btstack_memory_hci_connection_free( conn ); 3124 } 3125 return; 3126 } 3127 #endif 3128 3129 // on success, both hosts receive connection complete event 3130 if (packet[6] == HCI_ROLE_MASTER){ 3131 #ifdef ENABLE_LE_CENTRAL 3132 // if we're master on an le connection, it was an outgoing connection and we're done with it 3133 // note: no hci_connection_t object exists yet for connect with whitelist 3134 if (hci_is_le_connection_type(addr_type)){ 3135 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3136 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3137 } 3138 #endif 3139 } else { 3140 #ifdef ENABLE_LE_PERIPHERAL 3141 // if we're slave, it was an incoming connection, advertisements have stopped 3142 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3143 #endif 3144 } 3145 3146 // LE connections are auto-accepted, so just create a connection if there isn't one already 3147 if (!conn){ 3148 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3149 } 3150 3151 // no memory, sorry. 3152 if (!conn){ 3153 return; 3154 } 3155 3156 conn->state = OPEN; 3157 conn->role = packet[6]; 3158 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3159 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3160 3161 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3162 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3163 3164 #ifdef ENABLE_LE_PERIPHERAL 3165 if (packet[6] == HCI_ROLE_SLAVE){ 3166 hci_update_advertisements_enabled_for_current_roles(); 3167 } 3168 #endif 3169 3170 // init unenhanced att bearer mtu 3171 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3172 conn->att_connection.mtu_exchanged = false; 3173 3174 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3175 3176 // restart timer 3177 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3178 // btstack_run_loop_add_timer(&conn->timeout); 3179 3180 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3181 3182 hci_emit_nr_connections_changed(); 3183 } 3184 #endif 3185 3186 #ifdef ENABLE_CLASSIC 3187 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){ 3188 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3189 // LEVEL_4 is tested by l2cap 3190 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3191 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3192 if (level >= LEVEL_3){ 3193 // MITM not possible without keyboard or display 3194 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3195 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3196 3197 // MITM possible if one side has keyboard and the other has keyboard or display 3198 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3199 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3200 3201 // MITM not possible if one side has only display and other side has no keyboard 3202 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3203 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3204 } 3205 // LEVEL 2 requires SSP, which is a given 3206 return true; 3207 } 3208 3209 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3210 // get requested security level 3211 gap_security_level_t requested_security_level = conn->requested_security_level; 3212 if (hci_stack->gap_secure_connections_only_mode){ 3213 requested_security_level = LEVEL_4; 3214 } 3215 3216 // assess security: LEVEL 4 requires SC 3217 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3218 if ((requested_security_level == LEVEL_4) && 3219 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3220 !hci_remote_sc_enabled(conn)){ 3221 log_info("Level 4 required, but SC not supported -> abort"); 3222 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3223 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3224 return; 3225 } 3226 3227 // assess security based on io capabilities 3228 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3229 // responder: fully validate io caps of both sides as well as OOB data 3230 bool security_possible = false; 3231 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3232 3233 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3234 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3235 // so we merge the OOB data availability 3236 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3237 if (conn->classic_oob_c_192 != NULL){ 3238 have_oob_data |= 1; 3239 } 3240 if (conn->classic_oob_c_256 != NULL){ 3241 have_oob_data |= 2; 3242 } 3243 // for up to Level 3, either P-192 as well as P-256 will do 3244 // 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 3245 // if remote does not SC, we should not receive P-256 data either 3246 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3247 security_possible = true; 3248 } 3249 // for Level 4, P-256 is needed 3250 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3251 security_possible = true; 3252 } 3253 #endif 3254 3255 if (security_possible == false){ 3256 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3257 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3258 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3259 return; 3260 } 3261 } else { 3262 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3263 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3264 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3265 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3266 log_info("Level 3+ required, but no input/output -> abort"); 3267 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3268 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3269 return; 3270 } 3271 #endif 3272 #endif 3273 } 3274 3275 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3276 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3277 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3278 } else { 3279 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3280 } 3281 #endif 3282 } 3283 3284 #endif 3285 3286 static void event_handler(uint8_t *packet, uint16_t size){ 3287 3288 uint16_t event_length = packet[1]; 3289 3290 // assert packet is complete 3291 if (size != (event_length + 2u)){ 3292 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3293 return; 3294 } 3295 3296 hci_con_handle_t handle; 3297 hci_connection_t * conn; 3298 int i; 3299 3300 #ifdef ENABLE_CLASSIC 3301 hci_link_type_t link_type; 3302 bd_addr_t addr; 3303 bd_addr_type_t addr_type; 3304 #endif 3305 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3306 hci_iso_stream_t * iso_stream; 3307 le_audio_big_t * big; 3308 le_audio_big_sync_t * big_sync; 3309 #endif 3310 3311 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3312 3313 switch (hci_event_packet_get_type(packet)) { 3314 3315 case HCI_EVENT_COMMAND_COMPLETE: 3316 handle_command_complete_event(packet, size); 3317 break; 3318 3319 case HCI_EVENT_COMMAND_STATUS: 3320 handle_command_status_event(packet, size); 3321 break; 3322 3323 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3324 if (size < 3) return; 3325 uint16_t num_handles = packet[2]; 3326 if (size != (3u + num_handles * 4u)) return; 3327 #ifdef ENABLE_CLASSIC 3328 bool notify_sco = false; 3329 #endif 3330 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3331 bool notify_iso = false; 3332 #endif 3333 uint16_t offset = 3; 3334 for (i=0; i<num_handles;i++){ 3335 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3336 offset += 2u; 3337 uint16_t num_packets = little_endian_read_16(packet, offset); 3338 offset += 2u; 3339 3340 conn = hci_connection_for_handle(handle); 3341 if (conn != NULL) { 3342 3343 if (conn->num_packets_sent >= num_packets) { 3344 conn->num_packets_sent -= num_packets; 3345 } else { 3346 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3347 conn->num_packets_sent = 0; 3348 } 3349 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3350 #ifdef ENABLE_CLASSIC 3351 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3352 notify_sco = true; 3353 } 3354 #endif 3355 } 3356 3357 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3358 hci_controller_dump_packets(); 3359 #endif 3360 3361 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3362 if (conn == NULL){ 3363 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3364 if (iso_stream != NULL){ 3365 if (iso_stream->num_packets_sent >= num_packets) { 3366 iso_stream->num_packets_sent -= num_packets; 3367 } else { 3368 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3369 iso_stream->num_packets_sent = 0; 3370 } 3371 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3372 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3373 if (big != NULL){ 3374 big->num_completed_timestamp_current_valid = true; 3375 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3376 } 3377 } 3378 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3379 num_packets, handle, iso_stream->num_packets_sent); 3380 notify_iso = true; 3381 } 3382 } 3383 #endif 3384 } 3385 3386 #ifdef ENABLE_CLASSIC 3387 if (notify_sco){ 3388 hci_notify_if_sco_can_send_now(); 3389 } 3390 #endif 3391 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3392 if (notify_iso){ 3393 hci_iso_notify_can_send_now(); 3394 } 3395 #endif 3396 break; 3397 } 3398 3399 #ifdef ENABLE_CLASSIC 3400 case HCI_EVENT_FLUSH_OCCURRED: 3401 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3402 handle = hci_event_flush_occurred_get_handle(packet); 3403 conn = hci_connection_for_handle(handle); 3404 if (conn) { 3405 log_info("Flush occurred, disconnect 0x%04x", handle); 3406 conn->state = SEND_DISCONNECT; 3407 } 3408 break; 3409 3410 case HCI_EVENT_INQUIRY_COMPLETE: 3411 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3412 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3413 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3414 hci_emit_event(event, sizeof(event), 1); 3415 } 3416 break; 3417 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3418 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3419 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3420 } 3421 break; 3422 case HCI_EVENT_CONNECTION_REQUEST: 3423 reverse_bd_addr(&packet[2], addr); 3424 link_type = (hci_link_type_t) packet[11]; 3425 3426 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3427 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3428 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3429 bd_addr_copy(hci_stack->decline_addr, addr); 3430 break; 3431 } 3432 3433 if (hci_stack->gap_classic_accept_callback != NULL){ 3434 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3435 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3436 bd_addr_copy(hci_stack->decline_addr, addr); 3437 break; 3438 } 3439 } 3440 3441 // TODO: eval COD 8-10 3442 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3443 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3444 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3445 if (!conn) { 3446 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3447 } 3448 if (!conn) { 3449 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3450 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3451 bd_addr_copy(hci_stack->decline_addr, addr); 3452 hci_run(); 3453 // avoid event to higher layer 3454 return; 3455 } 3456 conn->role = HCI_ROLE_SLAVE; 3457 conn->state = RECEIVED_CONNECTION_REQUEST; 3458 // store info about eSCO 3459 if (link_type == HCI_LINK_TYPE_ESCO){ 3460 conn->remote_supported_features[0] |= 1; 3461 } 3462 hci_run(); 3463 break; 3464 3465 case HCI_EVENT_CONNECTION_COMPLETE: 3466 // Connection management 3467 reverse_bd_addr(&packet[5], addr); 3468 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3469 addr_type = BD_ADDR_TYPE_ACL; 3470 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3471 if (conn) { 3472 switch (conn->state){ 3473 // expected states 3474 case ACCEPTED_CONNECTION_REQUEST: 3475 case SENT_CREATE_CONNECTION: 3476 break; 3477 // unexpected state -> ignore 3478 default: 3479 // don't forward event to app 3480 return; 3481 } 3482 if (!packet[2]){ 3483 conn->state = OPEN; 3484 conn->con_handle = little_endian_read_16(packet, 3); 3485 3486 // trigger write supervision timeout if we're master 3487 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3488 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3489 } 3490 3491 // trigger write automatic flush timeout 3492 if (hci_stack->automatic_flush_timeout != 0){ 3493 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3494 } 3495 3496 // restart timer 3497 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3498 btstack_run_loop_add_timer(&conn->timeout); 3499 3500 // trigger remote features for dedicated bonding 3501 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3502 hci_trigger_remote_features_for_connection(conn); 3503 } 3504 3505 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3506 3507 hci_emit_nr_connections_changed(); 3508 } else { 3509 // connection failed 3510 hci_handle_connection_failed(conn, packet[2]); 3511 } 3512 } 3513 break; 3514 3515 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3516 reverse_bd_addr(&packet[5], addr); 3517 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3518 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3519 if (packet[2]){ 3520 // connection failed 3521 if (conn){ 3522 hci_handle_connection_failed(conn, packet[2]); 3523 } 3524 break; 3525 } 3526 if (!conn) { 3527 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3528 } 3529 if (!conn) { 3530 break; 3531 } 3532 conn->state = OPEN; 3533 conn->con_handle = little_endian_read_16(packet, 3); 3534 3535 #ifdef ENABLE_SCO_OVER_HCI 3536 // update SCO 3537 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3538 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3539 } 3540 // trigger can send now 3541 if (hci_have_usb_transport()){ 3542 hci_stack->sco_can_send_now = true; 3543 } 3544 #endif 3545 #ifdef HAVE_SCO_TRANSPORT 3546 // configure sco transport 3547 if (hci_stack->sco_transport != NULL){ 3548 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3549 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3550 } 3551 #endif 3552 break; 3553 3554 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3555 handle = little_endian_read_16(packet, 3); 3556 conn = hci_connection_for_handle(handle); 3557 if (!conn) break; 3558 if (!packet[2]){ 3559 const uint8_t * features = &packet[5]; 3560 hci_handle_remote_features_page_0(conn, features); 3561 3562 // read extended features if possible 3563 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3564 && ((conn->remote_supported_features[0] & 2) != 0)) { 3565 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3566 break; 3567 } 3568 } 3569 hci_handle_remote_features_received(conn); 3570 break; 3571 3572 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3573 handle = little_endian_read_16(packet, 3); 3574 conn = hci_connection_for_handle(handle); 3575 if (!conn) break; 3576 // status = ok, page = 1 3577 if (!packet[2]) { 3578 uint8_t page_number = packet[5]; 3579 uint8_t maximum_page_number = packet[6]; 3580 const uint8_t * features = &packet[7]; 3581 bool done = false; 3582 switch (page_number){ 3583 case 1: 3584 hci_handle_remote_features_page_1(conn, features); 3585 if (maximum_page_number >= 2){ 3586 // get Secure Connections (Controller) from Page 2 if available 3587 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3588 } else { 3589 // otherwise, assume SC (Controller) == SC (Host) 3590 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3591 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3592 } 3593 done = true; 3594 } 3595 break; 3596 case 2: 3597 hci_handle_remote_features_page_2(conn, features); 3598 done = true; 3599 break; 3600 default: 3601 break; 3602 } 3603 if (!done) break; 3604 } 3605 hci_handle_remote_features_received(conn); 3606 break; 3607 3608 case HCI_EVENT_LINK_KEY_REQUEST: 3609 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3610 hci_event_link_key_request_get_bd_addr(packet, addr); 3611 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3612 if (!conn) break; 3613 3614 // lookup link key in db if not cached 3615 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3616 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3617 } 3618 3619 // response sent by hci_run() 3620 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3621 #endif 3622 break; 3623 3624 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3625 hci_event_link_key_request_get_bd_addr(packet, addr); 3626 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3627 if (!conn) break; 3628 3629 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3630 3631 // CVE-2020-26555: ignore NULL link key 3632 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3633 if (btstack_is_null(&packet[8], 16)) break; 3634 3635 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3636 // Change Connection Encryption keeps link key type 3637 if (link_key_type != CHANGED_COMBINATION_KEY){ 3638 conn->link_key_type = link_key_type; 3639 } 3640 3641 // cache link key. link keys stored in little-endian format for legacy reasons 3642 memcpy(&conn->link_key, &packet[8], 16); 3643 3644 // only store link key: 3645 // - if bondable enabled 3646 if (hci_stack->bondable == false) break; 3647 // - if security level sufficient 3648 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3649 // - for SSP, also check if remote side requested bonding as well 3650 if (conn->link_key_type != COMBINATION_KEY){ 3651 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3652 if (!remote_bonding){ 3653 break; 3654 } 3655 } 3656 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3657 break; 3658 } 3659 3660 case HCI_EVENT_PIN_CODE_REQUEST: 3661 hci_event_pin_code_request_get_bd_addr(packet, addr); 3662 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3663 if (!conn) break; 3664 3665 hci_pairing_started(conn, false); 3666 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3667 if (!hci_stack->bondable ){ 3668 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3669 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3670 hci_run(); 3671 return; 3672 } 3673 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3674 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3675 log_info("Level 4 required, but SC not supported -> abort"); 3676 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3677 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3678 hci_run(); 3679 return; 3680 } 3681 break; 3682 3683 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3684 hci_event_io_capability_response_get_bd_addr(packet, addr); 3685 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3686 if (!conn) break; 3687 3688 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3689 hci_pairing_started(conn, true); 3690 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3691 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3692 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3693 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3694 #endif 3695 break; 3696 3697 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3698 hci_event_io_capability_response_get_bd_addr(packet, addr); 3699 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3700 if (!conn) break; 3701 3702 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3703 hci_connection_timestamp(conn); 3704 hci_pairing_started(conn, true); 3705 break; 3706 3707 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3708 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3709 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3710 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3711 if (!conn) break; 3712 3713 hci_connection_timestamp(conn); 3714 3715 hci_pairing_started(conn, true); 3716 3717 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3718 break; 3719 #endif 3720 3721 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3722 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3723 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3724 if (!conn) break; 3725 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3726 if (hci_stack->ssp_auto_accept){ 3727 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3728 }; 3729 } else { 3730 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3731 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3732 // don't forward event to app 3733 hci_run(); 3734 return; 3735 } 3736 break; 3737 3738 case HCI_EVENT_USER_PASSKEY_REQUEST: 3739 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3740 if (hci_stack->ssp_auto_accept){ 3741 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3742 }; 3743 break; 3744 3745 case HCI_EVENT_MODE_CHANGE: 3746 handle = hci_event_mode_change_get_handle(packet); 3747 conn = hci_connection_for_handle(handle); 3748 if (!conn) break; 3749 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3750 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3751 break; 3752 #endif 3753 3754 case HCI_EVENT_ENCRYPTION_CHANGE: 3755 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3756 handle = hci_event_encryption_change_get_connection_handle(packet); 3757 conn = hci_connection_for_handle(handle); 3758 if (!conn) break; 3759 if (hci_event_encryption_change_get_status(packet) == 0u) { 3760 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3761 if (encryption_enabled){ 3762 if (hci_is_le_connection(conn)){ 3763 // For LE, we accept connection as encrypted 3764 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3765 } 3766 #ifdef ENABLE_CLASSIC 3767 else { 3768 3769 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3770 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3771 bool connected_uses_aes_ccm = encryption_enabled == 2; 3772 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3773 log_info("SC during pairing, but only E0 now -> abort"); 3774 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3775 break; 3776 } 3777 3778 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3779 if (connected_uses_aes_ccm){ 3780 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3781 } 3782 3783 #ifdef ENABLE_TESTING_SUPPORT 3784 // work around for issue with PTS dongle 3785 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3786 #endif 3787 // validate encryption key size 3788 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3789 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3790 // already got encryption key size 3791 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3792 } else { 3793 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3794 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3795 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3796 } else { 3797 // if not, pretend everything is perfect 3798 hci_handle_read_encryption_key_size_complete(conn, 16); 3799 } 3800 } 3801 } 3802 #endif 3803 } else { 3804 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3805 } 3806 } else { 3807 uint8_t status = hci_event_encryption_change_get_status(packet); 3808 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3809 conn->bonding_flags &= ~BONDING_DEDICATED; 3810 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3811 conn->bonding_status = status; 3812 } 3813 } 3814 3815 break; 3816 3817 #ifdef ENABLE_CLASSIC 3818 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3819 handle = hci_event_authentication_complete_get_connection_handle(packet); 3820 conn = hci_connection_for_handle(handle); 3821 if (!conn) break; 3822 3823 // clear authentication active flag 3824 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3825 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3826 3827 // authenticated only if auth status == 0 3828 if (hci_event_authentication_complete_get_status(packet) == 0){ 3829 // authenticated 3830 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3831 3832 // If not already encrypted, start encryption 3833 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3834 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3835 break; 3836 } 3837 } 3838 3839 // emit updated security level 3840 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3841 break; 3842 3843 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3844 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3845 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3846 if (!conn) break; 3847 3848 // treat successfully paired connection as authenticated 3849 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3850 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3851 } 3852 3853 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3854 break; 3855 #endif 3856 3857 // HCI_EVENT_DISCONNECTION_COMPLETE 3858 // has been split, to first notify stack before shutting connection down 3859 // see end of function, too. 3860 case HCI_EVENT_DISCONNECTION_COMPLETE: 3861 if (packet[2]) break; // status != 0 3862 handle = little_endian_read_16(packet, 3); 3863 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3864 if (hci_stack->acl_fragmentation_total_size > 0u) { 3865 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3866 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3867 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3868 hci_stack->acl_fragmentation_total_size = 0; 3869 hci_stack->acl_fragmentation_pos = 0; 3870 if (release_buffer){ 3871 hci_release_packet_buffer(); 3872 } 3873 } 3874 } 3875 3876 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3877 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3878 if (hci_stack->iso_fragmentation_total_size > 0u) { 3879 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3880 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3881 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3882 hci_stack->iso_fragmentation_total_size = 0; 3883 hci_stack->iso_fragmentation_pos = 0; 3884 if (release_buffer){ 3885 hci_release_packet_buffer(); 3886 } 3887 } 3888 } 3889 3890 // finalize iso stream if handle matches 3891 iso_stream = hci_iso_stream_for_con_handle(handle); 3892 if (iso_stream != NULL){ 3893 hci_iso_stream_finalize(iso_stream); 3894 break; 3895 } 3896 #endif 3897 3898 conn = hci_connection_for_handle(handle); 3899 if (!conn) break; 3900 #ifdef ENABLE_CLASSIC 3901 // pairing failed if it was ongoing 3902 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3903 #endif 3904 3905 // emit dedicatd bonding event 3906 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3907 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3908 } 3909 3910 // mark connection for shutdown, stop timers, reset state 3911 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3912 hci_connection_stop_timer(conn); 3913 hci_connection_init(conn); 3914 3915 #ifdef ENABLE_BLE 3916 #ifdef ENABLE_LE_PERIPHERAL 3917 // re-enable advertisements for le connections if active 3918 if (hci_is_le_connection(conn)){ 3919 hci_update_advertisements_enabled_for_current_roles(); 3920 } 3921 #endif 3922 #endif 3923 break; 3924 3925 case HCI_EVENT_HARDWARE_ERROR: 3926 log_error("Hardware Error: 0x%02x", packet[2]); 3927 if (hci_stack->hardware_error_callback){ 3928 (*hci_stack->hardware_error_callback)(packet[2]); 3929 } else { 3930 // if no special requests, just reboot stack 3931 hci_power_control_off(); 3932 hci_power_control_on(); 3933 } 3934 break; 3935 3936 #ifdef ENABLE_CLASSIC 3937 case HCI_EVENT_ROLE_CHANGE: 3938 if (packet[2]) break; // status != 0 3939 reverse_bd_addr(&packet[3], addr); 3940 addr_type = BD_ADDR_TYPE_ACL; 3941 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3942 if (!conn) break; 3943 conn->role = packet[9]; 3944 break; 3945 #endif 3946 3947 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3948 // release packet buffer only for asynchronous transport and if there are not further fragments 3949 if (hci_transport_synchronous()) { 3950 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3951 return; // instead of break: to avoid re-entering hci_run() 3952 } 3953 hci_stack->acl_fragmentation_tx_active = 0; 3954 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3955 hci_stack->iso_fragmentation_tx_active = 0; 3956 if (hci_stack->iso_fragmentation_total_size) break; 3957 #endif 3958 if (hci_stack->acl_fragmentation_total_size) break; 3959 hci_release_packet_buffer(); 3960 3961 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3962 hci_iso_notify_can_send_now(); 3963 #endif 3964 // L2CAP receives this event via the hci_emit_event below 3965 3966 #ifdef ENABLE_CLASSIC 3967 // For SCO, we do the can_send_now_check here 3968 hci_notify_if_sco_can_send_now(); 3969 #endif 3970 break; 3971 3972 #ifdef ENABLE_CLASSIC 3973 case HCI_EVENT_SCO_CAN_SEND_NOW: 3974 // For SCO, we do the can_send_now_check here 3975 hci_stack->sco_can_send_now = true; 3976 hci_notify_if_sco_can_send_now(); 3977 return; 3978 3979 // explode inquriy results for easier consumption 3980 case HCI_EVENT_INQUIRY_RESULT: 3981 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3982 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3983 gap_inquiry_explode(packet, size); 3984 break; 3985 #endif 3986 3987 #ifdef ENABLE_BLE 3988 case HCI_EVENT_LE_META: 3989 switch (packet[2]){ 3990 #ifdef ENABLE_LE_CENTRAL 3991 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3992 if (!hci_stack->le_scanning_enabled) break; 3993 le_handle_advertisement_report(packet, size); 3994 break; 3995 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3996 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3997 if (!hci_stack->le_scanning_enabled) break; 3998 le_handle_extended_advertisement_report(packet, size); 3999 break; 4000 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4001 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4002 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4003 break; 4004 #endif 4005 #endif 4006 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4007 event_handle_le_connection_complete(packet); 4008 break; 4009 4010 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4011 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4012 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4013 conn = hci_connection_for_handle(handle); 4014 if (!conn) break; 4015 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4016 break; 4017 4018 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4019 // connection 4020 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4021 conn = hci_connection_for_handle(handle); 4022 if (conn) { 4023 // read arguments 4024 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4025 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4026 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4027 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4028 4029 // validate against current connection parameter range 4030 le_connection_parameter_range_t existing_range; 4031 gap_get_connection_parameter_range(&existing_range); 4032 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4033 if (update_parameter){ 4034 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4035 conn->le_conn_interval_min = le_conn_interval_min; 4036 conn->le_conn_interval_max = le_conn_interval_max; 4037 conn->le_conn_latency = le_conn_latency; 4038 conn->le_supervision_timeout = le_supervision_timeout; 4039 } else { 4040 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4041 } 4042 } 4043 break; 4044 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4045 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4046 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4047 conn = hci_connection_for_handle(handle); 4048 if (conn) { 4049 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4050 } 4051 break; 4052 #endif 4053 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4054 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4055 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4056 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4057 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4058 iso_stream = hci_iso_stream_for_con_handle(handle); 4059 btstack_assert(iso_stream != NULL); 4060 // track SDU 4061 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4062 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4063 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4064 // CIS Accept by Peripheral 4065 if (status == ERROR_CODE_SUCCESS){ 4066 if (iso_stream->max_sdu_p_to_c > 0){ 4067 // we're peripheral and we will send data 4068 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4069 } else { 4070 // we're peripheral and we will only receive data 4071 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4072 } 4073 } else { 4074 hci_iso_stream_finalize(iso_stream); 4075 hci_emit_cis_created(HCI_ISO_GROUP_ID_INVALID, handle, status); 4076 } 4077 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4078 } else { 4079 // CIG Setup by Central 4080 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4081 btstack_assert(cig != NULL); 4082 // update iso stream state 4083 if (status == ERROR_CODE_SUCCESS){ 4084 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4085 } else { 4086 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4087 } 4088 // update cig state 4089 uint8_t i; 4090 for (i=0;i<cig->num_cis;i++){ 4091 if (cig->cis_con_handles[i] == handle){ 4092 cig->cis_setup_active[i] = false; 4093 if (status == ERROR_CODE_SUCCESS){ 4094 cig->cis_setup_active[i] = false; 4095 cig->cis_established[i] = true; 4096 } else { 4097 hci_emit_cis_created(cig->cig_id, handle, status); 4098 } 4099 } 4100 } 4101 4102 // trigger iso path setup if complete 4103 bool setup_active = false; 4104 for (i=0;i<cig->num_cis;i++){ 4105 setup_active |= cig->cis_setup_active[i]; 4106 } 4107 if (setup_active == false){ 4108 cig->state_vars.next_cis = 0; 4109 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4110 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4111 } 4112 } 4113 } 4114 break; 4115 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4116 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4117 big = hci_big_for_handle(packet[4]); 4118 if (big != NULL){ 4119 uint8_t status = packet[3]; 4120 if (status == ERROR_CODE_SUCCESS){ 4121 // store bis_con_handles and trigger iso path setup 4122 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 4123 uint8_t i; 4124 for (i=0;i<num_bis;i++){ 4125 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4126 big->bis_con_handles[i] = bis_handle; 4127 // assign bis handle 4128 btstack_linked_list_iterator_t it; 4129 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4130 while (btstack_linked_list_iterator_has_next(&it)){ 4131 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4132 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4133 (iso_stream->group_id == big->big_handle)){ 4134 iso_stream->con_handle = bis_handle; 4135 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4136 break; 4137 } 4138 } 4139 } 4140 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4141 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4142 big->state_vars.next_bis = 0; 4143 } 4144 } else { 4145 // create BIG failed or has been stopped by us 4146 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4147 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4148 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4149 hci_emit_big_created(big, status); 4150 } else { 4151 hci_emit_big_terminated(big); 4152 } 4153 } 4154 } 4155 break; 4156 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4157 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4158 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4159 if (big != NULL){ 4160 // finalize associated ISO streams 4161 btstack_linked_list_iterator_t it; 4162 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4163 while (btstack_linked_list_iterator_has_next(&it)){ 4164 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4165 if (iso_stream->group_id == big->big_handle){ 4166 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->con_handle); 4167 btstack_linked_list_iterator_remove(&it); 4168 btstack_memory_hci_iso_stream_free(iso_stream); 4169 } 4170 } 4171 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4172 switch (big->state){ 4173 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4174 hci_emit_big_created(big, big->state_vars.status); 4175 break; 4176 default: 4177 hci_emit_big_terminated(big); 4178 break; 4179 } 4180 } 4181 break; 4182 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4183 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4184 big_sync = hci_big_sync_for_handle(packet[4]); 4185 if (big_sync != NULL){ 4186 uint8_t status = packet[3]; 4187 uint8_t big_handle = packet[4]; 4188 if (status == ERROR_CODE_SUCCESS){ 4189 // store bis_con_handles and trigger iso path setup 4190 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 4191 uint8_t i; 4192 for (i=0;i<num_bis;i++){ 4193 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 4194 } 4195 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4196 // trigger iso path setup 4197 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4198 big_sync->state_vars.next_bis = 0; 4199 } 4200 } else { 4201 // create BIG Sync failed or has been stopped by us 4202 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4203 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4204 hci_emit_big_sync_created(big_sync, status); 4205 } else { 4206 hci_emit_big_sync_stopped(big_handle); 4207 } 4208 } 4209 } 4210 break; 4211 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4212 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4213 big_sync = hci_big_sync_for_handle(packet[4]); 4214 if (big_sync != NULL){ 4215 uint8_t big_handle = packet[4]; 4216 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4217 hci_emit_big_sync_stopped(big_handle); 4218 } 4219 break; 4220 #endif 4221 default: 4222 break; 4223 } 4224 break; 4225 #endif 4226 case HCI_EVENT_VENDOR_SPECIFIC: 4227 // Vendor specific commands often create vendor specific event instead of num completed packets 4228 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4229 switch (hci_stack->manufacturer){ 4230 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4231 hci_stack->num_cmd_packets = 1; 4232 break; 4233 default: 4234 break; 4235 } 4236 break; 4237 default: 4238 break; 4239 } 4240 4241 handle_event_for_current_stack_state(packet, size); 4242 4243 // notify upper stack 4244 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4245 4246 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4247 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4248 handle = little_endian_read_16(packet, 3); 4249 hci_connection_t * aConn = hci_connection_for_handle(handle); 4250 // discard connection if app did not trigger a reconnect in the event handler 4251 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4252 hci_shutdown_connection(aConn); 4253 } 4254 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4255 hci_controller_dump_packets(); 4256 #endif 4257 } 4258 4259 // execute main loop 4260 hci_run(); 4261 } 4262 4263 #ifdef ENABLE_CLASSIC 4264 4265 #ifdef ENABLE_SCO_OVER_HCI 4266 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4267 static void sco_schedule_tx(hci_connection_t * conn); 4268 4269 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4270 log_debug("SCO TX Timeout"); 4271 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4272 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4273 if (!conn) return; 4274 4275 // trigger send 4276 conn->sco_tx_ready = 1; 4277 // extra packet if CVSD but SCO buffer is too short 4278 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4279 conn->sco_tx_ready++; 4280 } 4281 hci_notify_if_sco_can_send_now(); 4282 } 4283 4284 4285 #define SCO_TX_AFTER_RX_MS (6) 4286 4287 static void sco_schedule_tx(hci_connection_t * conn){ 4288 4289 uint32_t now = btstack_run_loop_get_time_ms(); 4290 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4291 int time_delta_ms = sco_tx_ms - now; 4292 4293 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4294 4295 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4296 btstack_run_loop_remove_timer(timer); 4297 btstack_run_loop_set_timer(timer, time_delta_ms); 4298 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4299 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4300 btstack_run_loop_add_timer(timer); 4301 } 4302 #endif 4303 4304 static void sco_handler(uint8_t * packet, uint16_t size){ 4305 // lookup connection struct 4306 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4307 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4308 if (!conn) return; 4309 4310 #ifdef ENABLE_SCO_OVER_HCI 4311 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4312 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4313 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4314 packet[2] = 0x3c; 4315 memmove(&packet[3], &packet[23], 63); 4316 size = 63; 4317 } 4318 } 4319 4320 if (hci_have_usb_transport()){ 4321 // Nothing to do 4322 } else { 4323 // 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); 4324 if (hci_stack->synchronous_flow_control_enabled == 0){ 4325 uint32_t now = btstack_run_loop_get_time_ms(); 4326 4327 if (!conn->sco_rx_valid){ 4328 // ignore first 10 packets 4329 conn->sco_rx_count++; 4330 // log_debug("sco rx count %u", conn->sco_rx_count); 4331 if (conn->sco_rx_count == 10) { 4332 // use first timestamp as is and pretent it just started 4333 conn->sco_rx_ms = now; 4334 conn->sco_rx_valid = 1; 4335 conn->sco_rx_count = 0; 4336 sco_schedule_tx(conn); 4337 } 4338 } else { 4339 // track expected arrival timme 4340 conn->sco_rx_count++; 4341 conn->sco_rx_ms += 7; 4342 int delta = (int32_t) (now - conn->sco_rx_ms); 4343 if (delta > 0){ 4344 conn->sco_rx_ms++; 4345 } 4346 // log_debug("sco rx %u", conn->sco_rx_ms); 4347 sco_schedule_tx(conn); 4348 } 4349 } 4350 } 4351 #endif 4352 4353 // deliver to app 4354 if (hci_stack->sco_packet_handler) { 4355 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4356 } 4357 4358 #ifdef HAVE_SCO_TRANSPORT 4359 // We can send one packet for each received packet 4360 conn->sco_tx_ready++; 4361 hci_notify_if_sco_can_send_now(); 4362 #endif 4363 4364 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4365 conn->num_packets_completed++; 4366 hci_stack->host_completed_packets = 1; 4367 hci_run(); 4368 #endif 4369 } 4370 #endif 4371 4372 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4373 hci_dump_packet(packet_type, 1, packet, size); 4374 switch (packet_type) { 4375 case HCI_EVENT_PACKET: 4376 event_handler(packet, size); 4377 break; 4378 case HCI_ACL_DATA_PACKET: 4379 acl_handler(packet, size); 4380 break; 4381 #ifdef ENABLE_CLASSIC 4382 case HCI_SCO_DATA_PACKET: 4383 sco_handler(packet, size); 4384 break; 4385 #endif 4386 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4387 case HCI_ISO_DATA_PACKET: 4388 hci_iso_packet_handler(packet, size); 4389 break; 4390 #endif 4391 default: 4392 break; 4393 } 4394 } 4395 4396 /** 4397 * @brief Add event packet handler. 4398 */ 4399 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4400 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4401 } 4402 4403 /** 4404 * @brief Remove event packet handler. 4405 */ 4406 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4407 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4408 } 4409 4410 /** Register HCI packet handlers */ 4411 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4412 hci_stack->acl_packet_handler = handler; 4413 } 4414 4415 #ifdef ENABLE_CLASSIC 4416 /** 4417 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4418 */ 4419 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4420 hci_stack->sco_packet_handler = handler; 4421 } 4422 #endif 4423 4424 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4425 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4426 hci_stack->iso_packet_handler = handler; 4427 } 4428 #endif 4429 4430 static void hci_state_reset(void){ 4431 // no connections yet 4432 hci_stack->connections = NULL; 4433 4434 // keep discoverable/connectable as this has been requested by the client(s) 4435 // hci_stack->discoverable = 0; 4436 // hci_stack->connectable = 0; 4437 // hci_stack->bondable = 1; 4438 // hci_stack->own_addr_type = 0; 4439 4440 // buffer is free 4441 hci_stack->hci_packet_buffer_reserved = false; 4442 4443 // no pending cmds 4444 hci_stack->decline_reason = 0; 4445 4446 hci_stack->secure_connections_active = false; 4447 4448 #ifdef ENABLE_CLASSIC 4449 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4450 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4451 4452 hci_stack->gap_tasks_classic = 4453 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4454 GAP_TASK_SET_CLASS_OF_DEVICE | 4455 GAP_TASK_SET_LOCAL_NAME | 4456 GAP_TASK_SET_EIR_DATA | 4457 GAP_TASK_WRITE_SCAN_ENABLE | 4458 GAP_TASK_WRITE_PAGE_TIMEOUT; 4459 #endif 4460 4461 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4462 hci_stack->classic_read_local_oob_data = false; 4463 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4464 #endif 4465 4466 // LE 4467 #ifdef ENABLE_BLE 4468 memset(hci_stack->le_random_address, 0, 6); 4469 hci_stack->le_random_address_set = 0; 4470 #endif 4471 #ifdef ENABLE_LE_CENTRAL 4472 hci_stack->le_scanning_active = false; 4473 hci_stack->le_scanning_param_update = true; 4474 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4475 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4476 hci_stack->le_whitelist_capacity = 0; 4477 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4478 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4479 #endif 4480 #endif 4481 #ifdef ENABLE_LE_PERIPHERAL 4482 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4483 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4484 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4485 } 4486 if (hci_stack->le_advertisements_data != NULL){ 4487 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4488 } 4489 #endif 4490 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4491 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4492 #endif 4493 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4494 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4495 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4496 #endif 4497 } 4498 4499 #ifdef ENABLE_CLASSIC 4500 /** 4501 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4502 */ 4503 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4504 // store and open remote device db 4505 hci_stack->link_key_db = link_key_db; 4506 if (hci_stack->link_key_db) { 4507 hci_stack->link_key_db->open(); 4508 } 4509 } 4510 #endif 4511 4512 void hci_init(const hci_transport_t *transport, const void *config){ 4513 4514 #ifdef HAVE_MALLOC 4515 if (!hci_stack) { 4516 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4517 } 4518 #else 4519 hci_stack = &hci_stack_static; 4520 #endif 4521 memset(hci_stack, 0, sizeof(hci_stack_t)); 4522 4523 // reference to use transport layer implementation 4524 hci_stack->hci_transport = transport; 4525 4526 // reference to used config 4527 hci_stack->config = config; 4528 4529 // setup pointer for outgoing packet buffer 4530 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4531 4532 // max acl payload size defined in config.h 4533 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4534 4535 // register packet handlers with transport 4536 transport->register_packet_handler(&packet_handler); 4537 4538 hci_stack->state = HCI_STATE_OFF; 4539 4540 // class of device 4541 hci_stack->class_of_device = 0x007a020c; // Smartphone 4542 4543 // bondable by default 4544 hci_stack->bondable = 1; 4545 4546 #ifdef ENABLE_CLASSIC 4547 // classic name 4548 hci_stack->local_name = default_classic_name; 4549 4550 // Master slave policy 4551 hci_stack->master_slave_policy = 1; 4552 4553 // Allow Role Switch 4554 hci_stack->allow_role_switch = 1; 4555 4556 // Default / minimum security level = 2 4557 hci_stack->gap_security_level = LEVEL_2; 4558 4559 // Default Security Mode 4 4560 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4561 4562 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4563 hci_stack->gap_required_encyrption_key_size = 7; 4564 4565 // Link Supervision Timeout 4566 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4567 4568 #endif 4569 4570 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4571 hci_stack->ssp_enable = 1; 4572 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4573 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4574 hci_stack->ssp_auto_accept = 1; 4575 4576 // Secure Connections: enable (requires support from Controller) 4577 hci_stack->secure_connections_enable = true; 4578 4579 // voice setting - signed 16 bit pcm data with CVSD over the air 4580 hci_stack->sco_voice_setting = 0x60; 4581 4582 #ifdef ENABLE_LE_CENTRAL 4583 // connection parameter to use for outgoing connections 4584 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4585 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4586 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4587 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4588 hci_stack->le_connection_latency = 4; // 4 4589 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4590 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4591 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4592 4593 // default LE Scanning 4594 hci_stack->le_scan_type = 0x1; // active 4595 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4596 hci_stack->le_scan_window = 0x30; // 30 ms 4597 #endif 4598 4599 #ifdef ENABLE_LE_PERIPHERAL 4600 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4601 #endif 4602 4603 // connection parameter range used to answer connection parameter update requests in l2cap 4604 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4605 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4606 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4607 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4608 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4609 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4610 4611 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4612 hci_stack->iso_packets_to_queue = 1; 4613 #endif 4614 4615 hci_state_reset(); 4616 } 4617 4618 void hci_deinit(void){ 4619 btstack_run_loop_remove_timer(&hci_stack->timeout); 4620 #ifdef HAVE_MALLOC 4621 if (hci_stack) { 4622 free(hci_stack); 4623 } 4624 #endif 4625 hci_stack = NULL; 4626 4627 #ifdef ENABLE_CLASSIC 4628 disable_l2cap_timeouts = 0; 4629 #endif 4630 } 4631 4632 /** 4633 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4634 */ 4635 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4636 hci_stack->chipset = chipset_driver; 4637 4638 // reset chipset driver - init is also called on power_up 4639 if (hci_stack->chipset && hci_stack->chipset->init){ 4640 hci_stack->chipset->init(hci_stack->config); 4641 } 4642 } 4643 4644 /** 4645 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4646 */ 4647 void hci_set_control(const btstack_control_t *hardware_control){ 4648 // references to used control implementation 4649 hci_stack->control = hardware_control; 4650 // init with transport config 4651 hardware_control->init(hci_stack->config); 4652 } 4653 4654 static void hci_discard_connections(void){ 4655 btstack_linked_list_iterator_t it; 4656 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4657 while (btstack_linked_list_iterator_has_next(&it)){ 4658 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4659 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4660 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4661 hci_shutdown_connection(connection); 4662 } 4663 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4664 while (hci_stack->iso_streams != NULL){ 4665 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4666 } 4667 #endif 4668 } 4669 4670 void hci_close(void){ 4671 4672 #ifdef ENABLE_CLASSIC 4673 // close remote device db 4674 if (hci_stack->link_key_db) { 4675 hci_stack->link_key_db->close(); 4676 } 4677 #endif 4678 4679 hci_discard_connections(); 4680 4681 hci_power_control(HCI_POWER_OFF); 4682 4683 #ifdef HAVE_MALLOC 4684 free(hci_stack); 4685 #endif 4686 hci_stack = NULL; 4687 } 4688 4689 #ifdef HAVE_SCO_TRANSPORT 4690 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4691 hci_stack->sco_transport = sco_transport; 4692 sco_transport->register_packet_handler(&packet_handler); 4693 } 4694 #endif 4695 4696 #ifdef ENABLE_CLASSIC 4697 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4698 // validate ranage and set 4699 if (encryption_key_size < 7) return; 4700 if (encryption_key_size > 16) return; 4701 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4702 } 4703 4704 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4705 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4706 hci_stack->gap_security_mode = security_mode; 4707 return ERROR_CODE_SUCCESS; 4708 } else { 4709 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4710 } 4711 } 4712 4713 gap_security_mode_t gap_get_security_mode(void){ 4714 return hci_stack->gap_security_mode; 4715 } 4716 4717 void gap_set_security_level(gap_security_level_t security_level){ 4718 hci_stack->gap_security_level = security_level; 4719 } 4720 4721 gap_security_level_t gap_get_security_level(void){ 4722 if (hci_stack->gap_secure_connections_only_mode){ 4723 return LEVEL_4; 4724 } 4725 return hci_stack->gap_security_level; 4726 } 4727 4728 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4729 hci_stack->gap_minimal_service_security_level = security_level; 4730 } 4731 4732 void gap_set_secure_connections_only_mode(bool enable){ 4733 hci_stack->gap_secure_connections_only_mode = enable; 4734 } 4735 4736 bool gap_get_secure_connections_only_mode(void){ 4737 return hci_stack->gap_secure_connections_only_mode; 4738 } 4739 #endif 4740 4741 #ifdef ENABLE_CLASSIC 4742 void gap_set_class_of_device(uint32_t class_of_device){ 4743 hci_stack->class_of_device = class_of_device; 4744 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4745 hci_run(); 4746 } 4747 4748 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4749 hci_stack->default_link_policy_settings = default_link_policy_settings; 4750 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4751 hci_run(); 4752 } 4753 4754 void gap_set_allow_role_switch(bool allow_role_switch){ 4755 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4756 } 4757 4758 uint8_t hci_get_allow_role_switch(void){ 4759 return hci_stack->allow_role_switch; 4760 } 4761 4762 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4763 hci_stack->link_supervision_timeout = link_supervision_timeout; 4764 } 4765 4766 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4767 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4768 } 4769 4770 uint16_t hci_automatic_flush_timeout(void){ 4771 return hci_stack->automatic_flush_timeout; 4772 } 4773 4774 void hci_disable_l2cap_timeout_check(void){ 4775 disable_l2cap_timeouts = 1; 4776 } 4777 #endif 4778 4779 #ifndef HAVE_HOST_CONTROLLER_API 4780 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4781 void hci_set_bd_addr(bd_addr_t addr){ 4782 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4783 hci_stack->custom_bd_addr_set = 1; 4784 } 4785 #endif 4786 4787 // State-Module-Driver overview 4788 // state module low-level 4789 // HCI_STATE_OFF off close 4790 // HCI_STATE_INITIALIZING, on open 4791 // HCI_STATE_WORKING, on open 4792 // HCI_STATE_HALTING, on open 4793 // HCI_STATE_SLEEPING, off/sleep close 4794 // HCI_STATE_FALLING_ASLEEP on open 4795 4796 static int hci_power_control_on(void){ 4797 4798 // power on 4799 int err = 0; 4800 if (hci_stack->control && hci_stack->control->on){ 4801 err = (*hci_stack->control->on)(); 4802 } 4803 if (err){ 4804 log_error( "POWER_ON failed"); 4805 hci_emit_hci_open_failed(); 4806 return err; 4807 } 4808 4809 // int chipset driver 4810 if (hci_stack->chipset && hci_stack->chipset->init){ 4811 hci_stack->chipset->init(hci_stack->config); 4812 } 4813 4814 // init transport 4815 if (hci_stack->hci_transport->init){ 4816 hci_stack->hci_transport->init(hci_stack->config); 4817 } 4818 4819 // open transport 4820 err = hci_stack->hci_transport->open(); 4821 if (err){ 4822 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4823 if (hci_stack->control && hci_stack->control->off){ 4824 (*hci_stack->control->off)(); 4825 } 4826 hci_emit_hci_open_failed(); 4827 return err; 4828 } 4829 return 0; 4830 } 4831 4832 static void hci_power_control_off(void){ 4833 4834 log_info("hci_power_control_off"); 4835 4836 // close low-level device 4837 hci_stack->hci_transport->close(); 4838 4839 log_info("hci_power_control_off - hci_transport closed"); 4840 4841 // power off 4842 if (hci_stack->control && hci_stack->control->off){ 4843 (*hci_stack->control->off)(); 4844 } 4845 4846 log_info("hci_power_control_off - control closed"); 4847 4848 hci_stack->state = HCI_STATE_OFF; 4849 } 4850 4851 static void hci_power_control_sleep(void){ 4852 4853 log_info("hci_power_control_sleep"); 4854 4855 #if 0 4856 // don't close serial port during sleep 4857 4858 // close low-level device 4859 hci_stack->hci_transport->close(hci_stack->config); 4860 #endif 4861 4862 // sleep mode 4863 if (hci_stack->control && hci_stack->control->sleep){ 4864 (*hci_stack->control->sleep)(); 4865 } 4866 4867 hci_stack->state = HCI_STATE_SLEEPING; 4868 } 4869 4870 static int hci_power_control_wake(void){ 4871 4872 log_info("hci_power_control_wake"); 4873 4874 // wake on 4875 if (hci_stack->control && hci_stack->control->wake){ 4876 (*hci_stack->control->wake)(); 4877 } 4878 4879 #if 0 4880 // open low-level device 4881 int err = hci_stack->hci_transport->open(hci_stack->config); 4882 if (err){ 4883 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4884 if (hci_stack->control && hci_stack->control->off){ 4885 (*hci_stack->control->off)(); 4886 } 4887 hci_emit_hci_open_failed(); 4888 return err; 4889 } 4890 #endif 4891 4892 return 0; 4893 } 4894 4895 static void hci_power_enter_initializing_state(void){ 4896 // set up state machine 4897 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4898 hci_stack->hci_packet_buffer_reserved = false; 4899 hci_stack->state = HCI_STATE_INITIALIZING; 4900 hci_stack->substate = HCI_INIT_SEND_RESET; 4901 } 4902 4903 static void hci_power_enter_halting_state(void){ 4904 #ifdef ENABLE_BLE 4905 // drop entries scheduled for removal, mark others for re-adding 4906 btstack_linked_list_iterator_t it; 4907 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 4908 while (btstack_linked_list_iterator_has_next(&it)){ 4909 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 4910 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 4911 btstack_linked_list_iterator_remove(&it); 4912 btstack_memory_whitelist_entry_free(entry); 4913 } else { 4914 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 4915 } 4916 } 4917 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4918 hci_periodic_advertiser_list_free(); 4919 #endif 4920 #endif 4921 // see hci_run 4922 hci_stack->state = HCI_STATE_HALTING; 4923 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4924 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4925 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4926 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4927 btstack_run_loop_add_timer(&hci_stack->timeout); 4928 } 4929 4930 // returns error 4931 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4932 int err; 4933 switch (power_mode){ 4934 case HCI_POWER_ON: 4935 err = hci_power_control_on(); 4936 if (err != 0) { 4937 log_error("hci_power_control_on() error %d", err); 4938 return err; 4939 } 4940 hci_power_enter_initializing_state(); 4941 break; 4942 case HCI_POWER_OFF: 4943 // do nothing 4944 break; 4945 case HCI_POWER_SLEEP: 4946 // do nothing (with SLEEP == OFF) 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_initializing(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 // no connections yet, just turn it off 4962 hci_power_control_off(); 4963 break; 4964 case HCI_POWER_SLEEP: 4965 // no connections yet, just turn it off 4966 hci_power_control_sleep(); 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_working(HCI_POWER_MODE power_mode) { 4976 switch (power_mode){ 4977 case HCI_POWER_ON: 4978 // do nothing 4979 break; 4980 case HCI_POWER_OFF: 4981 hci_power_enter_halting_state(); 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_halting(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 // do nothing 5002 break; 5003 case HCI_POWER_SLEEP: 5004 // see hci_run 5005 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5006 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5007 break; 5008 default: 5009 btstack_assert(false); 5010 break; 5011 } 5012 return ERROR_CODE_SUCCESS; 5013 } 5014 5015 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5016 switch (power_mode){ 5017 case HCI_POWER_ON: 5018 hci_power_enter_initializing_state(); 5019 break; 5020 case HCI_POWER_OFF: 5021 hci_power_enter_halting_state(); 5022 break; 5023 case HCI_POWER_SLEEP: 5024 // do nothing 5025 break; 5026 default: 5027 btstack_assert(false); 5028 break; 5029 } 5030 return ERROR_CODE_SUCCESS; 5031 } 5032 5033 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5034 int err; 5035 switch (power_mode){ 5036 case HCI_POWER_ON: 5037 err = hci_power_control_wake(); 5038 if (err) return err; 5039 hci_power_enter_initializing_state(); 5040 break; 5041 case HCI_POWER_OFF: 5042 hci_power_enter_halting_state(); 5043 break; 5044 case HCI_POWER_SLEEP: 5045 // do nothing 5046 break; 5047 default: 5048 btstack_assert(false); 5049 break; 5050 } 5051 return ERROR_CODE_SUCCESS; 5052 } 5053 5054 int hci_power_control(HCI_POWER_MODE power_mode){ 5055 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5056 btstack_run_loop_remove_timer(&hci_stack->timeout); 5057 int err = 0; 5058 switch (hci_stack->state){ 5059 case HCI_STATE_OFF: 5060 err = hci_power_control_state_off(power_mode); 5061 break; 5062 case HCI_STATE_INITIALIZING: 5063 err = hci_power_control_state_initializing(power_mode); 5064 break; 5065 case HCI_STATE_WORKING: 5066 err = hci_power_control_state_working(power_mode); 5067 break; 5068 case HCI_STATE_HALTING: 5069 err = hci_power_control_state_halting(power_mode); 5070 break; 5071 case HCI_STATE_FALLING_ASLEEP: 5072 err = hci_power_control_state_falling_asleep(power_mode); 5073 break; 5074 case HCI_STATE_SLEEPING: 5075 err = hci_power_control_state_sleeping(power_mode); 5076 break; 5077 default: 5078 btstack_assert(false); 5079 break; 5080 } 5081 if (err != 0){ 5082 return err; 5083 } 5084 5085 // create internal event 5086 hci_emit_state(); 5087 5088 // trigger next/first action 5089 hci_run(); 5090 5091 return 0; 5092 } 5093 5094 5095 static void hci_halting_run(void) { 5096 5097 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5098 5099 hci_connection_t *connection; 5100 #ifdef ENABLE_BLE 5101 #ifdef ENABLE_LE_PERIPHERAL 5102 bool stop_advertismenets; 5103 #endif 5104 #endif 5105 5106 switch (hci_stack->substate) { 5107 case HCI_HALTING_CLASSIC_STOP: 5108 #ifdef ENABLE_CLASSIC 5109 if (!hci_can_send_command_packet_now()) return; 5110 5111 if (hci_stack->connectable || hci_stack->discoverable){ 5112 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5113 hci_send_cmd(&hci_write_scan_enable, 0); 5114 return; 5115 } 5116 #endif 5117 /* fall through */ 5118 5119 case HCI_HALTING_LE_ADV_STOP: 5120 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5121 5122 #ifdef ENABLE_BLE 5123 #ifdef ENABLE_LE_PERIPHERAL 5124 if (!hci_can_send_command_packet_now()) return; 5125 5126 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5127 5128 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5129 if (hci_extended_advertising_supported()){ 5130 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5131 btstack_linked_list_iterator_t it; 5132 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5133 // stop all periodic advertisements and check if an extended set is active 5134 while (btstack_linked_list_iterator_has_next(&it)){ 5135 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5136 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5137 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5138 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5139 return; 5140 } 5141 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5142 stop_advertismenets = true; 5143 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5144 } 5145 } 5146 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5147 if (stop_advertismenets){ 5148 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5149 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5150 return; 5151 } 5152 } 5153 else 5154 #else /* ENABLE_LE_PERIPHERAL */ 5155 { 5156 if (stop_advertismenets) { 5157 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5158 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5159 return; 5160 } 5161 } 5162 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5163 #endif /* ENABLE_LE_PERIPHERAL */ 5164 #endif /* ENABLE_BLE */ 5165 5166 /* fall through */ 5167 5168 case HCI_HALTING_LE_SCAN_STOP: 5169 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5170 if (!hci_can_send_command_packet_now()) return; 5171 5172 #ifdef ENABLE_BLE 5173 #ifdef ENABLE_LE_CENTRAL 5174 if (hci_stack->le_scanning_active){ 5175 hci_le_scan_stop(); 5176 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5177 return; 5178 } 5179 #endif 5180 #endif 5181 5182 /* fall through */ 5183 5184 case HCI_HALTING_DISCONNECT_ALL: 5185 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5186 if (!hci_can_send_command_packet_now()) return; 5187 5188 // close all open connections 5189 connection = (hci_connection_t *) hci_stack->connections; 5190 if (connection) { 5191 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5192 5193 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5194 5195 // check state 5196 switch(connection->state) { 5197 case SENT_DISCONNECT: 5198 case RECEIVED_DISCONNECTION_COMPLETE: 5199 // wait until connection is gone 5200 return; 5201 default: 5202 break; 5203 } 5204 5205 // finally, send the disconnect command 5206 connection->state = SENT_DISCONNECT; 5207 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5208 return; 5209 } 5210 5211 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5212 // stop BIGs and BIG Syncs 5213 if (hci_stack->le_audio_bigs != NULL){ 5214 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5215 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5216 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5217 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5218 return; 5219 } 5220 if (hci_stack->le_audio_big_syncs != NULL){ 5221 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5222 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5223 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5224 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5225 return; 5226 } 5227 #endif 5228 5229 btstack_run_loop_remove_timer(&hci_stack->timeout); 5230 5231 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5232 log_info("HCI_STATE_HALTING: wait 50 ms"); 5233 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5234 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5235 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5236 btstack_run_loop_add_timer(&hci_stack->timeout); 5237 break; 5238 5239 case HCI_HALTING_CLOSE: 5240 // close left over connections (that had not been properly closed before) 5241 hci_discard_connections(); 5242 5243 log_info("HCI_STATE_HALTING, calling off"); 5244 5245 // switch mode 5246 hci_power_control_off(); 5247 5248 log_info("HCI_STATE_HALTING, emitting state"); 5249 hci_emit_state(); 5250 log_info("HCI_STATE_HALTING, done"); 5251 break; 5252 5253 case HCI_HALTING_W4_CLOSE_TIMER: 5254 // keep waiting 5255 5256 break; 5257 default: 5258 break; 5259 } 5260 }; 5261 5262 static void hci_falling_asleep_run(void){ 5263 hci_connection_t * connection; 5264 switch(hci_stack->substate) { 5265 case HCI_FALLING_ASLEEP_DISCONNECT: 5266 log_info("HCI_STATE_FALLING_ASLEEP"); 5267 // close all open connections 5268 connection = (hci_connection_t *) hci_stack->connections; 5269 if (connection){ 5270 5271 // send disconnect 5272 if (!hci_can_send_command_packet_now()) return; 5273 5274 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5275 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5276 5277 // send disconnected event right away - causes higher layer connections to get closed, too. 5278 hci_shutdown_connection(connection); 5279 return; 5280 } 5281 5282 if (hci_classic_supported()){ 5283 // disable page and inquiry scan 5284 if (!hci_can_send_command_packet_now()) return; 5285 5286 log_info("HCI_STATE_HALTING, disabling inq scans"); 5287 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5288 5289 // continue in next sub state 5290 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5291 break; 5292 } 5293 5294 /* fall through */ 5295 5296 case HCI_FALLING_ASLEEP_COMPLETE: 5297 log_info("HCI_STATE_HALTING, calling sleep"); 5298 // switch mode 5299 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5300 hci_emit_state(); 5301 break; 5302 5303 default: 5304 break; 5305 } 5306 } 5307 5308 #ifdef ENABLE_CLASSIC 5309 5310 static void hci_update_scan_enable(void){ 5311 // 2 = page scan, 1 = inq scan 5312 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5313 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5314 hci_run(); 5315 } 5316 5317 void gap_discoverable_control(uint8_t enable){ 5318 if (enable) enable = 1; // normalize argument 5319 5320 if (hci_stack->discoverable == enable){ 5321 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5322 return; 5323 } 5324 5325 hci_stack->discoverable = enable; 5326 hci_update_scan_enable(); 5327 } 5328 5329 void gap_connectable_control(uint8_t enable){ 5330 if (enable) enable = 1; // normalize argument 5331 5332 // don't emit event 5333 if (hci_stack->connectable == enable) return; 5334 5335 hci_stack->connectable = enable; 5336 hci_update_scan_enable(); 5337 } 5338 #endif 5339 5340 void gap_local_bd_addr(bd_addr_t address_buffer){ 5341 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5342 } 5343 5344 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5345 static void hci_host_num_completed_packets(void){ 5346 5347 // create packet manually as arrays are not supported and num_commands should not get reduced 5348 hci_reserve_packet_buffer(); 5349 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5350 5351 uint16_t size = 0; 5352 uint16_t num_handles = 0; 5353 packet[size++] = 0x35; 5354 packet[size++] = 0x0c; 5355 size++; // skip param len 5356 size++; // skip num handles 5357 5358 // add { handle, packets } entries 5359 btstack_linked_item_t * it; 5360 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5361 hci_connection_t * connection = (hci_connection_t *) it; 5362 if (connection->num_packets_completed){ 5363 little_endian_store_16(packet, size, connection->con_handle); 5364 size += 2; 5365 little_endian_store_16(packet, size, connection->num_packets_completed); 5366 size += 2; 5367 // 5368 num_handles++; 5369 connection->num_packets_completed = 0; 5370 } 5371 } 5372 5373 packet[2] = size - 3; 5374 packet[3] = num_handles; 5375 5376 hci_stack->host_completed_packets = 0; 5377 5378 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5379 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5380 5381 // release packet buffer for synchronous transport implementations 5382 if (hci_transport_synchronous()){ 5383 hci_release_packet_buffer(); 5384 hci_emit_transport_packet_sent(); 5385 } 5386 } 5387 #endif 5388 5389 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5390 UNUSED(ds); 5391 hci_stack->substate = HCI_HALTING_CLOSE; 5392 hci_halting_run(); 5393 } 5394 5395 static bool hci_run_acl_fragments(void){ 5396 if (hci_stack->acl_fragmentation_total_size > 0u) { 5397 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5398 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5399 if (connection) { 5400 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5401 hci_send_acl_packet_fragments(connection); 5402 return true; 5403 } 5404 } else { 5405 // connection gone -> discard further fragments 5406 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5407 hci_stack->acl_fragmentation_total_size = 0; 5408 hci_stack->acl_fragmentation_pos = 0; 5409 } 5410 } 5411 return false; 5412 } 5413 5414 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5415 static bool hci_run_iso_fragments(void){ 5416 if (hci_stack->iso_fragmentation_total_size > 0u) { 5417 // TODO: flow control 5418 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5419 hci_send_iso_packet_fragments(); 5420 return true; 5421 } 5422 } 5423 return false; 5424 } 5425 #endif 5426 5427 #ifdef ENABLE_CLASSIC 5428 5429 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5430 static bool hci_classic_operation_active(void) { 5431 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5432 return true; 5433 } 5434 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5435 return true; 5436 } 5437 btstack_linked_item_t * it; 5438 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5439 hci_connection_t *connection = (hci_connection_t *) it; 5440 switch (connection->state) { 5441 case SENT_CREATE_CONNECTION: 5442 case SENT_CANCEL_CONNECTION: 5443 case SENT_DISCONNECT: 5444 return true; 5445 default: 5446 break; 5447 } 5448 } 5449 return false; 5450 } 5451 #endif 5452 5453 static bool hci_run_general_gap_classic(void){ 5454 5455 // assert stack is working and classic is active 5456 if (hci_classic_supported() == false) return false; 5457 if (hci_stack->state != HCI_STATE_WORKING) return false; 5458 5459 // decline incoming connections 5460 if (hci_stack->decline_reason){ 5461 uint8_t reason = hci_stack->decline_reason; 5462 hci_stack->decline_reason = 0; 5463 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5464 return true; 5465 } 5466 5467 if (hci_stack->gap_tasks_classic != 0){ 5468 hci_run_gap_tasks_classic(); 5469 return true; 5470 } 5471 5472 // start/stop inquiry 5473 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5474 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5475 if (hci_classic_operation_active() == false) 5476 #endif 5477 { 5478 uint8_t duration = hci_stack->inquiry_state; 5479 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5480 if (hci_stack->inquiry_max_period_length != 0){ 5481 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); 5482 } else { 5483 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5484 } 5485 return true; 5486 } 5487 } 5488 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5489 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5490 hci_send_cmd(&hci_inquiry_cancel); 5491 return true; 5492 } 5493 5494 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5495 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5496 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5497 return true; 5498 } 5499 5500 // remote name request 5501 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5502 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5503 if (hci_classic_operation_active() == false) 5504 #endif 5505 { 5506 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5507 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5508 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5509 return true; 5510 } 5511 } 5512 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5513 // Local OOB data 5514 if (hci_stack->classic_read_local_oob_data){ 5515 hci_stack->classic_read_local_oob_data = false; 5516 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5517 hci_send_cmd(&hci_read_local_extended_oob_data); 5518 } else { 5519 hci_send_cmd(&hci_read_local_oob_data); 5520 } 5521 } 5522 #endif 5523 // pairing 5524 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5525 uint8_t state = hci_stack->gap_pairing_state; 5526 uint8_t pin_code[16]; 5527 switch (state){ 5528 case GAP_PAIRING_STATE_SEND_PIN: 5529 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5530 memset(pin_code, 0, 16); 5531 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5532 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5533 break; 5534 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5535 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5536 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5537 break; 5538 case GAP_PAIRING_STATE_SEND_PASSKEY: 5539 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5540 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5541 break; 5542 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5543 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5544 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5545 break; 5546 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5547 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5548 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5549 break; 5550 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5551 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5552 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5553 break; 5554 default: 5555 break; 5556 } 5557 return true; 5558 } 5559 return false; 5560 } 5561 #endif 5562 5563 #ifdef ENABLE_BLE 5564 5565 #ifdef ENABLE_LE_CENTRAL 5566 static void hci_le_scan_stop(void){ 5567 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5568 if (hci_extended_advertising_supported()) { 5569 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5570 } else 5571 #endif 5572 { 5573 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5574 } 5575 } 5576 #endif 5577 5578 #ifdef ENABLE_LE_PERIPHERAL 5579 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5580 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5581 uint8_t operation = 0; 5582 if (pos == 0){ 5583 // first fragment or complete data 5584 operation |= 1; 5585 } 5586 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5587 // last fragment or complete data 5588 operation |= 2; 5589 } 5590 return operation; 5591 } 5592 #endif 5593 #endif 5594 5595 static bool hci_run_general_gap_le(void){ 5596 5597 btstack_linked_list_iterator_t lit; 5598 5599 // Phase 1: collect what to stop 5600 5601 #ifdef ENABLE_LE_CENTRAL 5602 bool scanning_stop = false; 5603 bool connecting_stop = false; 5604 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5605 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5606 bool periodic_sync_stop = false; 5607 #endif 5608 #endif 5609 #endif 5610 5611 #ifdef ENABLE_LE_PERIPHERAL 5612 bool advertising_stop = false; 5613 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5614 le_advertising_set_t * advertising_stop_set = NULL; 5615 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5616 bool periodic_advertising_stop = false; 5617 #endif 5618 #endif 5619 #endif 5620 5621 // check if own address changes 5622 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5623 5624 // check if whitelist needs modification 5625 bool whitelist_modification_pending = false; 5626 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5627 while (btstack_linked_list_iterator_has_next(&lit)){ 5628 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5629 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5630 whitelist_modification_pending = true; 5631 break; 5632 } 5633 } 5634 5635 // check if resolving list needs modification 5636 bool resolving_list_modification_pending = false; 5637 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5638 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5639 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5640 resolving_list_modification_pending = true; 5641 } 5642 #endif 5643 5644 #ifdef ENABLE_LE_CENTRAL 5645 5646 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5647 // check if periodic advertiser list needs modification 5648 bool periodic_list_modification_pending = false; 5649 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5650 while (btstack_linked_list_iterator_has_next(&lit)){ 5651 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5652 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5653 periodic_list_modification_pending = true; 5654 break; 5655 } 5656 } 5657 #endif 5658 5659 // scanning control 5660 if (hci_stack->le_scanning_active) { 5661 // stop if: 5662 // - parameter change required 5663 // - it's disabled 5664 // - whitelist change required but used for scanning 5665 // - resolving list modified 5666 // - own address changes 5667 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5668 if ((hci_stack->le_scanning_param_update) || 5669 !hci_stack->le_scanning_enabled || 5670 (scanning_uses_whitelist && whitelist_modification_pending) || 5671 resolving_list_modification_pending || 5672 random_address_change){ 5673 5674 scanning_stop = true; 5675 } 5676 } 5677 5678 // connecting control 5679 bool connecting_with_whitelist; 5680 switch (hci_stack->le_connecting_state){ 5681 case LE_CONNECTING_DIRECT: 5682 case LE_CONNECTING_WHITELIST: 5683 // stop connecting if: 5684 // - connecting uses white and whitelist modification pending 5685 // - if it got disabled 5686 // - resolving list modified 5687 // - own address changes 5688 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5689 if ((connecting_with_whitelist && whitelist_modification_pending) || 5690 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5691 resolving_list_modification_pending || 5692 random_address_change) { 5693 5694 connecting_stop = true; 5695 } 5696 break; 5697 default: 5698 break; 5699 } 5700 5701 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5702 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5703 // periodic sync control 5704 bool sync_with_advertiser_list; 5705 switch(hci_stack->le_periodic_sync_state){ 5706 case LE_CONNECTING_DIRECT: 5707 case LE_CONNECTING_WHITELIST: 5708 // stop sync if: 5709 // - sync with advertiser list and advertiser list modification pending 5710 // - if it got disabled 5711 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5712 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5713 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5714 periodic_sync_stop = true; 5715 } 5716 break; 5717 default: 5718 break; 5719 } 5720 #endif 5721 #endif 5722 5723 #endif /* ENABLE_LE_CENTRAL */ 5724 5725 #ifdef ENABLE_LE_PERIPHERAL 5726 // le advertisement control 5727 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5728 // stop if: 5729 // - parameter change required 5730 // - random address used in advertising and changes 5731 // - it's disabled 5732 // - whitelist change required but used for advertisement filter policy 5733 // - resolving list modified 5734 // - own address changes 5735 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5736 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5737 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5738 if (advertising_change || 5739 (advertising_uses_random_address && random_address_change) || 5740 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5741 (advertising_uses_whitelist && whitelist_modification_pending) || 5742 resolving_list_modification_pending || 5743 random_address_change) { 5744 5745 advertising_stop = true; 5746 } 5747 } 5748 5749 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5750 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5751 btstack_linked_list_iterator_t it; 5752 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5753 while (btstack_linked_list_iterator_has_next(&it)){ 5754 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5755 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5756 // stop if: 5757 // - parameter change required 5758 // - random address used in connectable advertising and changes 5759 // - it's disabled 5760 // - whitelist change required but used for advertisement filter policy 5761 // - resolving list modified 5762 // - own address changes 5763 // - advertisement set will be removed 5764 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5765 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5766 bool advertising_uses_random_address = 5767 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5768 advertising_connectable; 5769 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5770 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5771 bool advertising_set_random_address_change = 5772 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5773 bool advertising_set_will_be_removed = 5774 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5775 if (advertising_parameter_change || 5776 (advertising_uses_random_address && advertising_set_random_address_change) || 5777 (advertising_enabled == false) || 5778 (advertising_uses_whitelist && whitelist_modification_pending) || 5779 resolving_list_modification_pending || 5780 advertising_set_will_be_removed) { 5781 5782 advertising_stop = true; 5783 advertising_stop_set = advertising_set; 5784 break; 5785 } 5786 } 5787 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5788 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5789 // stop if: 5790 // - it's disabled 5791 // - parameter change required 5792 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5793 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5794 if ((periodic_enabled == false) || periodic_parameter_change){ 5795 periodic_advertising_stop = true; 5796 advertising_stop_set = advertising_set; 5797 } 5798 } 5799 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5800 } 5801 } 5802 #endif 5803 5804 #endif 5805 5806 5807 // Phase 2: stop everything that should be off during modifications 5808 5809 5810 // 2.1 Outgoing connection 5811 #ifdef ENABLE_LE_CENTRAL 5812 if (connecting_stop){ 5813 hci_send_cmd(&hci_le_create_connection_cancel); 5814 return true; 5815 } 5816 #endif 5817 5818 // 2.2 Scanning 5819 #ifdef ENABLE_LE_CENTRAL 5820 if (scanning_stop){ 5821 hci_stack->le_scanning_active = false; 5822 hci_le_scan_stop(); 5823 return true; 5824 } 5825 5826 // 2.3 Periodic Sync 5827 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5828 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5829 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5830 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5831 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5832 return true; 5833 } 5834 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5835 if (periodic_sync_stop){ 5836 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5837 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5838 return true; 5839 } 5840 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5841 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5842 #endif /* ENABLE_LE_CENTRAL */ 5843 5844 // 2.4 Advertising: legacy, extended, periodic 5845 #ifdef ENABLE_LE_PERIPHERAL 5846 if (advertising_stop){ 5847 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5848 if (hci_extended_advertising_supported()) { 5849 uint8_t advertising_stop_handle; 5850 if (advertising_stop_set != NULL){ 5851 advertising_stop_handle = advertising_stop_set->advertising_handle; 5852 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5853 } else { 5854 advertising_stop_handle = 0; 5855 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5856 } 5857 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5858 const uint16_t durations[] = { 0 }; 5859 const uint16_t max_events[] = { 0 }; 5860 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5861 } else 5862 #endif 5863 { 5864 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5865 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5866 } 5867 return true; 5868 } 5869 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5870 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5871 if (periodic_advertising_stop){ 5872 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5873 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5874 return true; 5875 } 5876 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5877 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5878 #endif /* ENABLE_LE_PERIPHERAL */ 5879 5880 5881 // Phase 3: modify 5882 5883 if (random_address_change){ 5884 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5885 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5886 if (hci_extended_advertising_supported()) { 5887 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5888 } 5889 #endif 5890 { 5891 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5892 } 5893 return true; 5894 } 5895 5896 #ifdef ENABLE_LE_CENTRAL 5897 if (hci_stack->le_scanning_param_update){ 5898 hci_stack->le_scanning_param_update = false; 5899 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5900 if (hci_extended_advertising_supported()){ 5901 // prepare arrays for all PHYs 5902 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5903 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5904 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5905 uint8_t scanning_phys = 1; // LE 1M PHY 5906 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5907 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5908 } else 5909 #endif 5910 { 5911 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5912 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5913 } 5914 return true; 5915 } 5916 #endif 5917 5918 #ifdef ENABLE_LE_PERIPHERAL 5919 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5920 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5921 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5922 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5923 if (hci_extended_advertising_supported()){ 5924 // map advertisment type to advertising event properties 5925 uint16_t adv_event_properties = 0; 5926 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5927 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5928 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5929 } 5930 hci_stack->le_advertising_set_in_current_command = 0; 5931 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5932 0, 5933 adv_event_properties, 5934 hci_stack->le_advertisements_interval_min, 5935 hci_stack->le_advertisements_interval_max, 5936 hci_stack->le_advertisements_channel_map, 5937 hci_stack->le_advertisements_own_addr_type, 5938 hci_stack->le_advertisements_direct_address_type, 5939 hci_stack->le_advertisements_direct_address, 5940 hci_stack->le_advertisements_filter_policy, 5941 0x7f, // tx power: no preference 5942 0x01, // primary adv phy: LE 1M 5943 0, // secondary adv max skip 5944 0, // secondary adv phy 5945 0, // adv sid 5946 0 // scan request notification 5947 ); 5948 } 5949 #endif 5950 { 5951 hci_send_cmd(&hci_le_set_advertising_parameters, 5952 hci_stack->le_advertisements_interval_min, 5953 hci_stack->le_advertisements_interval_max, 5954 hci_stack->le_advertisements_type, 5955 hci_stack->le_advertisements_own_addr_type, 5956 hci_stack->le_advertisements_direct_address_type, 5957 hci_stack->le_advertisements_direct_address, 5958 hci_stack->le_advertisements_channel_map, 5959 hci_stack->le_advertisements_filter_policy); 5960 } 5961 return true; 5962 } 5963 5964 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5965 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5966 uint8_t adv_data_clean[31]; 5967 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5968 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5969 hci_stack->le_advertisements_data_len); 5970 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5971 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5972 if (hci_extended_advertising_supported()){ 5973 hci_stack->le_advertising_set_in_current_command = 0; 5974 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5975 } else 5976 #endif 5977 { 5978 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5979 } 5980 return true; 5981 } 5982 5983 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5984 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5985 uint8_t scan_data_clean[31]; 5986 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5987 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5988 hci_stack->le_scan_response_data_len); 5989 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5990 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5991 if (hci_extended_advertising_supported()){ 5992 hci_stack->le_advertising_set_in_current_command = 0; 5993 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5994 } else 5995 #endif 5996 { 5997 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5998 } 5999 return true; 6000 } 6001 6002 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6003 if (hci_extended_advertising_supported()) { 6004 btstack_linked_list_iterator_t it; 6005 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6006 while (btstack_linked_list_iterator_has_next(&it)){ 6007 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6008 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6009 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6010 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6011 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6012 return true; 6013 } 6014 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6015 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6016 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6017 return true; 6018 } 6019 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6020 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6021 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6022 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6023 advertising_set->advertising_handle, 6024 advertising_set->extended_params.advertising_event_properties, 6025 advertising_set->extended_params.primary_advertising_interval_min, 6026 advertising_set->extended_params.primary_advertising_interval_max, 6027 advertising_set->extended_params.primary_advertising_channel_map, 6028 advertising_set->extended_params.own_address_type, 6029 advertising_set->extended_params.peer_address_type, 6030 advertising_set->extended_params.peer_address, 6031 advertising_set->extended_params.advertising_filter_policy, 6032 advertising_set->extended_params.advertising_tx_power, 6033 advertising_set->extended_params.primary_advertising_phy, 6034 advertising_set->extended_params.secondary_advertising_max_skip, 6035 advertising_set->extended_params.secondary_advertising_phy, 6036 advertising_set->extended_params.advertising_sid, 6037 advertising_set->extended_params.scan_request_notification_enable 6038 ); 6039 return true; 6040 } 6041 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6042 uint16_t pos = advertising_set->adv_data_pos; 6043 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6044 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6045 if ((operation & 0x02) != 0){ 6046 // last fragment or complete data 6047 operation |= 2; 6048 advertising_set->adv_data_pos = 0; 6049 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6050 } else { 6051 advertising_set->adv_data_pos += data_to_upload; 6052 } 6053 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6054 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6055 return true; 6056 } 6057 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6058 uint16_t pos = advertising_set->scan_data_pos; 6059 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6060 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6061 if ((operation & 0x02) != 0){ 6062 advertising_set->scan_data_pos = 0; 6063 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6064 } else { 6065 advertising_set->scan_data_pos += data_to_upload; 6066 } 6067 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6068 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6069 return true; 6070 } 6071 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6072 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6073 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6074 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6075 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6076 advertising_set->advertising_handle, 6077 advertising_set->periodic_params.periodic_advertising_interval_min, 6078 advertising_set->periodic_params.periodic_advertising_interval_max, 6079 advertising_set->periodic_params.periodic_advertising_properties); 6080 return true; 6081 } 6082 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6083 uint16_t pos = advertising_set->periodic_data_pos; 6084 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6085 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6086 if ((operation & 0x02) != 0){ 6087 // last fragment or complete data 6088 operation |= 2; 6089 advertising_set->periodic_data_pos = 0; 6090 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6091 } else { 6092 advertising_set->periodic_data_pos += data_to_upload; 6093 } 6094 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6095 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6096 return true; 6097 } 6098 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6099 } 6100 } 6101 #endif 6102 6103 #endif 6104 6105 #ifdef ENABLE_LE_CENTRAL 6106 // if connect with whitelist was active and is not cancelled yet, wait until next time 6107 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6108 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6109 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6110 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6111 #endif 6112 #endif 6113 6114 // LE Whitelist Management 6115 if (whitelist_modification_pending){ 6116 // add/remove entries 6117 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6118 while (btstack_linked_list_iterator_has_next(&lit)){ 6119 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6120 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6121 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6122 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 6123 return true; 6124 } 6125 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6126 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6127 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6128 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6129 return true; 6130 } 6131 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 6132 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6133 btstack_memory_whitelist_entry_free(entry); 6134 } 6135 } 6136 } 6137 6138 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6139 // LE Resolving List Management 6140 if (resolving_list_supported) { 6141 uint16_t i; 6142 switch (hci_stack->le_resolving_list_state) { 6143 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6144 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6145 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6146 return true; 6147 case LE_RESOLVING_LIST_READ_SIZE: 6148 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6149 hci_send_cmd(&hci_le_read_resolving_list_size); 6150 return true; 6151 case LE_RESOLVING_LIST_SEND_CLEAR: 6152 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6153 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6154 sizeof(hci_stack->le_resolving_list_add_entries)); 6155 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6156 sizeof(hci_stack->le_resolving_list_remove_entries)); 6157 hci_send_cmd(&hci_le_clear_resolving_list); 6158 return true; 6159 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6160 // first remove old entries 6161 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6162 uint8_t offset = i >> 3; 6163 uint8_t mask = 1 << (i & 7); 6164 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6165 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6166 bd_addr_t peer_identity_addreses; 6167 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6168 sm_key_t peer_irk; 6169 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6170 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6171 6172 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6173 // trigger whitelist entry 'update' (work around for controller bug) 6174 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6175 while (btstack_linked_list_iterator_has_next(&lit)) { 6176 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6177 if (entry->address_type != peer_identity_addr_type) continue; 6178 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6179 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6180 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6181 } 6182 #endif 6183 6184 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6185 peer_identity_addreses); 6186 return true; 6187 } 6188 6189 // then add new entries 6190 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6191 uint8_t offset = i >> 3; 6192 uint8_t mask = 1 << (i & 7); 6193 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6194 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6195 bd_addr_t peer_identity_addreses; 6196 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6197 sm_key_t peer_irk; 6198 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6199 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6200 if (btstack_is_null(peer_irk, 16)) continue; 6201 const uint8_t *local_irk = gap_get_persistent_irk(); 6202 // command uses format specifier 'P' that stores 16-byte value without flip 6203 uint8_t local_irk_flipped[16]; 6204 uint8_t peer_irk_flipped[16]; 6205 reverse_128(local_irk, local_irk_flipped); 6206 reverse_128(peer_irk, peer_irk_flipped); 6207 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6208 peer_irk_flipped, local_irk_flipped); 6209 return true; 6210 } 6211 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6212 break; 6213 6214 default: 6215 break; 6216 } 6217 } 6218 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6219 #endif 6220 6221 #ifdef ENABLE_LE_CENTRAL 6222 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6223 // LE Whitelist Management 6224 if (periodic_list_modification_pending){ 6225 // add/remove entries 6226 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6227 while (btstack_linked_list_iterator_has_next(&lit)){ 6228 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6229 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6230 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6231 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6232 return true; 6233 } 6234 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6235 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6236 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6237 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6238 return true; 6239 } 6240 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6241 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6242 btstack_memory_periodic_advertiser_list_entry_free(entry); 6243 } 6244 } 6245 } 6246 #endif 6247 #endif 6248 6249 #ifdef ENABLE_LE_CENTRAL 6250 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6251 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6252 if (hci_stack->le_past_set_default_params){ 6253 hci_stack->le_past_set_default_params = false; 6254 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6255 hci_stack->le_past_mode, 6256 hci_stack->le_past_skip, 6257 hci_stack->le_past_sync_timeout, 6258 hci_stack->le_past_cte_type); 6259 return true; 6260 } 6261 #endif 6262 #endif 6263 #endif 6264 6265 // post-pone all actions until stack is fully working 6266 if (hci_stack->state != HCI_STATE_WORKING) return false; 6267 6268 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6269 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6270 6271 // Phase 4: restore state 6272 6273 #ifdef ENABLE_LE_CENTRAL 6274 // re-start scanning 6275 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6276 hci_stack->le_scanning_active = true; 6277 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6278 if (hci_extended_advertising_supported()){ 6279 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6280 } else 6281 #endif 6282 { 6283 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6284 } 6285 return true; 6286 } 6287 #endif 6288 6289 #ifdef ENABLE_LE_CENTRAL 6290 // re-start connecting 6291 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6292 bd_addr_t null_addr; 6293 memset(null_addr, 0, 6); 6294 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6295 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6296 hci_send_cmd(&hci_le_create_connection, 6297 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 6298 hci_stack->le_connection_scan_window, // scan interval: 30 ms 6299 1, // use whitelist 6300 0, // peer address type 6301 null_addr, // peer bd addr 6302 hci_stack->le_connection_own_addr_type, // our addr type: 6303 hci_stack->le_connection_interval_min, // conn interval min 6304 hci_stack->le_connection_interval_max, // conn interval max 6305 hci_stack->le_connection_latency, // conn latency 6306 hci_stack->le_supervision_timeout, // conn latency 6307 hci_stack->le_minimum_ce_length, // min ce length 6308 hci_stack->le_maximum_ce_length // max ce length 6309 ); 6310 return true; 6311 } 6312 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6313 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6314 switch(hci_stack->le_periodic_sync_request){ 6315 case LE_CONNECTING_DIRECT: 6316 case LE_CONNECTING_WHITELIST: 6317 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6318 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6319 hci_stack->le_periodic_sync_options, 6320 hci_stack->le_periodic_sync_advertising_sid, 6321 hci_stack->le_periodic_sync_advertiser_address_type, 6322 hci_stack->le_periodic_sync_advertiser_address, 6323 hci_stack->le_periodic_sync_skip, 6324 hci_stack->le_periodic_sync_timeout, 6325 hci_stack->le_periodic_sync_cte_type); 6326 return true; 6327 default: 6328 break; 6329 } 6330 } 6331 #endif 6332 #endif 6333 6334 #ifdef ENABLE_LE_PERIPHERAL 6335 // re-start advertising 6336 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6337 // check if advertisements should be enabled given 6338 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6339 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6340 6341 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6342 if (hci_extended_advertising_supported()){ 6343 const uint8_t advertising_handles[] = { 0 }; 6344 const uint16_t durations[] = { 0 }; 6345 const uint16_t max_events[] = { 0 }; 6346 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6347 } else 6348 #endif 6349 { 6350 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6351 } 6352 return true; 6353 } 6354 6355 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6356 if (hci_extended_advertising_supported()) { 6357 btstack_linked_list_iterator_t it; 6358 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6359 while (btstack_linked_list_iterator_has_next(&it)) { 6360 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6361 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6362 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6363 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6364 const uint16_t durations[] = { advertising_set->enable_timeout }; 6365 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6366 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6367 return true; 6368 } 6369 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6370 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6371 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6372 uint8_t enable = 1; 6373 if (advertising_set->periodic_include_adi){ 6374 enable |= 2; 6375 } 6376 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6377 return true; 6378 } 6379 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6380 } 6381 } 6382 #endif 6383 #endif 6384 6385 return false; 6386 } 6387 6388 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6389 static bool hci_run_iso_tasks(void){ 6390 btstack_linked_list_iterator_t it; 6391 6392 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6393 return false; 6394 } 6395 6396 // BIG 6397 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6398 while (btstack_linked_list_iterator_has_next(&it)){ 6399 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6400 switch (big->state){ 6401 case LE_AUDIO_BIG_STATE_CREATE: 6402 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6403 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6404 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6405 hci_send_cmd(&hci_le_create_big, 6406 big->params->big_handle, 6407 big->params->advertising_handle, 6408 big->params->num_bis, 6409 big->params->sdu_interval_us, 6410 big->params->max_sdu, 6411 big->params->max_transport_latency_ms, 6412 big->params->rtn, 6413 big->params->phy, 6414 big->params->packing, 6415 big->params->framing, 6416 big->params->encryption, 6417 big->params->broadcast_code); 6418 return true; 6419 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6420 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6421 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); 6422 return true; 6423 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6424 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6425 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6426 return true; 6427 case LE_AUDIO_BIG_STATE_TERMINATE: 6428 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6429 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6430 return true; 6431 default: 6432 break; 6433 } 6434 } 6435 6436 // BIG Sync 6437 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6438 while (btstack_linked_list_iterator_has_next(&it)){ 6439 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6440 switch (big_sync->state){ 6441 case LE_AUDIO_BIG_STATE_CREATE: 6442 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6443 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6444 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6445 hci_send_cmd(&hci_le_big_create_sync, 6446 big_sync->params->big_handle, 6447 big_sync->params->sync_handle, 6448 big_sync->params->encryption, 6449 big_sync->params->broadcast_code, 6450 big_sync->params->mse, 6451 big_sync->params->big_sync_timeout_10ms, 6452 big_sync->params->num_bis, 6453 big_sync->params->bis_indices); 6454 return true; 6455 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6456 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6457 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); 6458 return true; 6459 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6460 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6461 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6462 return true; 6463 case LE_AUDIO_BIG_STATE_TERMINATE: 6464 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6465 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6466 return true; 6467 default: 6468 break; 6469 } 6470 } 6471 6472 // CIG 6473 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6474 while (btstack_linked_list_iterator_has_next(&it)) { 6475 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6476 uint8_t i; 6477 // Set CIG Parameters 6478 uint8_t cis_id[MAX_NR_CIS]; 6479 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 6480 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 6481 uint8_t phy_c_to_p[MAX_NR_CIS]; 6482 uint8_t phy_p_to_c[MAX_NR_CIS]; 6483 uint8_t rtn_c_to_p[MAX_NR_CIS]; 6484 uint8_t rtn_p_to_c[MAX_NR_CIS]; 6485 switch (cig->state) { 6486 case LE_AUDIO_CIG_STATE_CREATE: 6487 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6488 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6489 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 6490 le_audio_cig_params_t * params = cig->params; 6491 for (i = 0; i < params->num_cis; i++) { 6492 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 6493 cis_id[i] = cis_params->cis_id; 6494 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 6495 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 6496 phy_c_to_p[i] = cis_params->phy_c_to_p; 6497 phy_p_to_c[i] = cis_params->phy_p_to_c; 6498 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 6499 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 6500 } 6501 hci_send_cmd(&hci_le_set_cig_parameters, 6502 cig->cig_id, 6503 params->sdu_interval_c_to_p, 6504 params->sdu_interval_p_to_c, 6505 params->worst_case_sca, 6506 params->packing, 6507 params->framing, 6508 params->max_transport_latency_c_to_p, 6509 params->max_transport_latency_p_to_c, 6510 params->num_cis, 6511 cis_id, 6512 max_sdu_c_to_p, 6513 max_sdu_p_to_c, 6514 phy_c_to_p, 6515 phy_p_to_c, 6516 rtn_c_to_p, 6517 rtn_p_to_c 6518 ); 6519 return true; 6520 case LE_AUDIO_CIG_STATE_CREATE_CIS: 6521 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6522 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6523 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 6524 for (i=0;i<cig->num_cis;i++){ 6525 cig->cis_setup_active[i] = true; 6526 } 6527 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 6528 return true; 6529 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 6530 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 6531 // find next path to setup 6532 uint8_t cis_index = cig->state_vars.next_cis >> 1; 6533 if (cig->cis_established[cis_index] == false) { 6534 continue; 6535 } 6536 uint8_t cis_direction = cig->state_vars.next_cis & 1; 6537 bool setup = true; 6538 if (cis_direction == 0){ 6539 // 0 - input - host to controller 6540 // we are central => central to peripheral 6541 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 6542 } else { 6543 // 1 - output - controller to host 6544 // we are central => peripheral to central 6545 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 6546 } 6547 if (setup){ 6548 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 6549 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6550 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 6551 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, 0, 0, 0, 0, 0, NULL); 6552 return true; 6553 } 6554 cig->state_vars.next_cis++; 6555 } 6556 // emit done 6557 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 6558 default: 6559 break; 6560 } 6561 } 6562 6563 // CIS Accept/Reject 6564 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 6565 while (btstack_linked_list_iterator_has_next(&it)) { 6566 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 6567 hci_con_handle_t con_handle; 6568 switch (iso_stream->state){ 6569 case HCI_ISO_STREAM_W2_ACCEPT: 6570 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 6571 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6572 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6573 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->con_handle); 6574 return true; 6575 case HCI_ISO_STREAM_W2_REJECT: 6576 con_handle = iso_stream->con_handle; 6577 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6578 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6579 hci_iso_stream_finalize(iso_stream); 6580 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 6581 return true; 6582 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 6583 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6584 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6585 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 6586 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 0, 0, 0, 0, 0, 0, 0, NULL); 6587 break; 6588 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 6589 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 6590 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 6591 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 6592 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->con_handle, 1, 0, 0, 0, 0, 0, 0, NULL); 6593 break; 6594 default: 6595 break; 6596 } 6597 } 6598 6599 return false; 6600 } 6601 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6602 #endif 6603 6604 static bool hci_run_general_pending_commands(void){ 6605 btstack_linked_item_t * it; 6606 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6607 hci_connection_t * connection = (hci_connection_t *) it; 6608 6609 switch(connection->state){ 6610 case SEND_CREATE_CONNECTION: 6611 switch(connection->address_type){ 6612 #ifdef ENABLE_CLASSIC 6613 case BD_ADDR_TYPE_ACL: 6614 log_info("sending hci_create_connection"); 6615 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6616 break; 6617 #endif 6618 default: 6619 #ifdef ENABLE_BLE 6620 #ifdef ENABLE_LE_CENTRAL 6621 log_info("sending hci_le_create_connection"); 6622 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6623 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6624 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6625 if (hci_extended_advertising_supported()) { 6626 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6627 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6628 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6629 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6630 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6631 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6632 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6633 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6634 hci_send_cmd(&hci_le_extended_create_connection, 6635 0, // don't use whitelist 6636 hci_stack->le_connection_own_addr_type, // our addr type: 6637 connection->address_type, // peer address type 6638 connection->address, // peer bd addr 6639 1, // initiating PHY - 1M 6640 le_connection_scan_interval, // conn scan interval 6641 le_connection_scan_window, // conn scan windows 6642 le_connection_interval_min, // conn interval min 6643 le_connection_interval_max, // conn interval max 6644 le_connection_latency, // conn latency 6645 le_supervision_timeout, // conn latency 6646 le_minimum_ce_length, // min ce length 6647 le_maximum_ce_length // max ce length 6648 ); } 6649 else 6650 #endif 6651 { 6652 hci_send_cmd(&hci_le_create_connection, 6653 hci_stack->le_connection_scan_interval, // conn scan interval 6654 hci_stack->le_connection_scan_window, // conn scan windows 6655 0, // don't use whitelist 6656 connection->address_type, // peer address type 6657 connection->address, // peer bd addr 6658 hci_stack->le_connection_own_addr_type, // our addr type: 6659 hci_stack->le_connection_interval_min, // conn interval min 6660 hci_stack->le_connection_interval_max, // conn interval max 6661 hci_stack->le_connection_latency, // conn latency 6662 hci_stack->le_supervision_timeout, // conn latency 6663 hci_stack->le_minimum_ce_length, // min ce length 6664 hci_stack->le_maximum_ce_length // max ce length 6665 ); 6666 } 6667 connection->state = SENT_CREATE_CONNECTION; 6668 #endif 6669 #endif 6670 break; 6671 } 6672 return true; 6673 6674 #ifdef ENABLE_CLASSIC 6675 case RECEIVED_CONNECTION_REQUEST: 6676 connection->role = HCI_ROLE_SLAVE; 6677 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6678 log_info("sending hci_accept_connection_request"); 6679 connection->state = ACCEPTED_CONNECTION_REQUEST; 6680 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6681 return true; 6682 } 6683 break; 6684 #endif 6685 case SEND_DISCONNECT: 6686 connection->state = SENT_DISCONNECT; 6687 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6688 return true; 6689 6690 default: 6691 break; 6692 } 6693 6694 // no further commands if connection is about to get shut down 6695 if (connection->state == SENT_DISCONNECT) continue; 6696 6697 #ifdef ENABLE_CLASSIC 6698 6699 // Handling link key request requires remote supported features 6700 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6701 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6702 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6703 6704 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6705 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6706 if (have_link_key && security_level_sufficient){ 6707 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6708 } else { 6709 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6710 } 6711 return true; 6712 } 6713 6714 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6715 log_info("denying to pin request"); 6716 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6717 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6718 return true; 6719 } 6720 6721 // security assessment requires remote features 6722 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6723 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6724 hci_ssp_assess_security_on_io_cap_request(connection); 6725 // 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 6726 } 6727 6728 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6729 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6730 // set authentication requirements: 6731 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6732 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6733 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6734 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6735 authreq |= 1; 6736 } 6737 bool bonding = hci_stack->bondable; 6738 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6739 // if we have received IO Cap Response, we're in responder role 6740 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6741 if (bonding && !remote_bonding){ 6742 log_info("Remote not bonding, dropping local flag"); 6743 bonding = false; 6744 } 6745 } 6746 if (bonding){ 6747 if (connection->bonding_flags & BONDING_DEDICATED){ 6748 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6749 } else { 6750 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6751 } 6752 } 6753 uint8_t have_oob_data = 0; 6754 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6755 if (connection->classic_oob_c_192 != NULL){ 6756 have_oob_data |= 1; 6757 } 6758 if (connection->classic_oob_c_256 != NULL){ 6759 have_oob_data |= 2; 6760 } 6761 #endif 6762 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6763 return true; 6764 } 6765 6766 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6767 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6768 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6769 return true; 6770 } 6771 6772 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6773 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6774 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6775 const uint8_t zero[16] = { 0 }; 6776 const uint8_t * r_192 = zero; 6777 const uint8_t * c_192 = zero; 6778 const uint8_t * r_256 = zero; 6779 const uint8_t * c_256 = zero; 6780 // verify P-256 OOB 6781 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6782 c_256 = connection->classic_oob_c_256; 6783 if (connection->classic_oob_r_256 != NULL) { 6784 r_256 = connection->classic_oob_r_256; 6785 } 6786 } 6787 // verify P-192 OOB 6788 if ((connection->classic_oob_c_192 != NULL)) { 6789 c_192 = connection->classic_oob_c_192; 6790 if (connection->classic_oob_r_192 != NULL) { 6791 r_192 = connection->classic_oob_r_192; 6792 } 6793 } 6794 6795 // assess security 6796 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6797 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6798 if (need_level_4 && !can_reach_level_4){ 6799 log_info("Level 4 required, but not possible -> abort"); 6800 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6801 // send oob negative reply 6802 c_256 = NULL; 6803 c_192 = NULL; 6804 } 6805 6806 // Reply 6807 if (c_256 != zero) { 6808 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6809 } else if (c_192 != zero){ 6810 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6811 } else { 6812 hci_stack->classic_oob_con_handle = connection->con_handle; 6813 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6814 } 6815 return true; 6816 } 6817 #endif 6818 6819 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6820 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6821 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6822 return true; 6823 } 6824 6825 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6826 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6827 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6828 return true; 6829 } 6830 6831 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6832 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6833 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6834 return true; 6835 } 6836 6837 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6838 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6839 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6840 connection->state = SENT_DISCONNECT; 6841 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6842 return true; 6843 } 6844 6845 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6846 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6847 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6848 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6849 return true; 6850 } 6851 6852 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6853 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6854 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6855 return true; 6856 } 6857 6858 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6859 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6860 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6861 return true; 6862 } 6863 6864 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6865 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6866 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6867 return true; 6868 } 6869 6870 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6871 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6872 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6873 return true; 6874 } 6875 6876 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6877 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6878 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6879 return true; 6880 } 6881 #endif 6882 6883 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6884 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6885 #ifdef ENABLE_CLASSIC 6886 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6887 #endif 6888 if (connection->state != SENT_DISCONNECT){ 6889 connection->state = SENT_DISCONNECT; 6890 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6891 return true; 6892 } 6893 } 6894 6895 #ifdef ENABLE_CLASSIC 6896 uint16_t sniff_min_interval; 6897 switch (connection->sniff_min_interval){ 6898 case 0: 6899 break; 6900 case 0xffff: 6901 connection->sniff_min_interval = 0; 6902 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6903 return true; 6904 default: 6905 sniff_min_interval = connection->sniff_min_interval; 6906 connection->sniff_min_interval = 0; 6907 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6908 return true; 6909 } 6910 6911 if (connection->sniff_subrating_max_latency != 0xffff){ 6912 uint16_t max_latency = connection->sniff_subrating_max_latency; 6913 connection->sniff_subrating_max_latency = 0; 6914 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6915 return true; 6916 } 6917 6918 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6919 uint8_t service_type = (uint8_t) connection->qos_service_type; 6920 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6921 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); 6922 return true; 6923 } 6924 6925 if (connection->request_role != HCI_ROLE_INVALID){ 6926 hci_role_t role = connection->request_role; 6927 connection->request_role = HCI_ROLE_INVALID; 6928 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6929 return true; 6930 } 6931 #endif 6932 6933 if (connection->gap_connection_tasks != 0){ 6934 #ifdef ENABLE_CLASSIC 6935 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6936 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6937 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6938 return true; 6939 } 6940 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6941 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6942 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6943 return true; 6944 } 6945 #endif 6946 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6947 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6948 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6949 return true; 6950 } 6951 #ifdef ENABLE_BLE 6952 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 6953 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 6954 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 6955 return true; 6956 } 6957 #endif 6958 } 6959 6960 #ifdef ENABLE_BLE 6961 switch (connection->le_con_parameter_update_state){ 6962 // response to L2CAP CON PARAMETER UPDATE REQUEST 6963 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6964 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6965 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6966 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6967 0x0000, 0xffff); 6968 return true; 6969 case CON_PARAMETER_UPDATE_REPLY: 6970 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6971 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6972 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6973 0x0000, 0xffff); 6974 return true; 6975 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6976 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6977 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6978 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6979 return true; 6980 default: 6981 break; 6982 } 6983 if (connection->le_phy_update_all_phys != 0xffu){ 6984 uint8_t all_phys = connection->le_phy_update_all_phys; 6985 connection->le_phy_update_all_phys = 0xff; 6986 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); 6987 return true; 6988 } 6989 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6990 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 6991 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 6992 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 6993 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 6994 return true; 6995 } 6996 #endif 6997 #endif 6998 } 6999 return false; 7000 } 7001 7002 static void hci_run(void){ 7003 7004 // stack state sub statemachines 7005 switch (hci_stack->state) { 7006 case HCI_STATE_INITIALIZING: 7007 hci_initializing_run(); 7008 break; 7009 case HCI_STATE_HALTING: 7010 hci_halting_run(); 7011 break; 7012 case HCI_STATE_FALLING_ASLEEP: 7013 hci_falling_asleep_run(); 7014 break; 7015 default: 7016 break; 7017 } 7018 7019 // allow to run after initialization to working transition 7020 if (hci_stack->state != HCI_STATE_WORKING){ 7021 return; 7022 } 7023 7024 bool done; 7025 7026 // send continuation fragments first, as they block the prepared packet buffer 7027 done = hci_run_acl_fragments(); 7028 if (done) return; 7029 7030 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7031 done = hci_run_iso_fragments(); 7032 if (done) return; 7033 #endif 7034 7035 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7036 // send host num completed packets next as they don't require num_cmd_packets > 0 7037 if (!hci_can_send_comand_packet_transport()) return; 7038 if (hci_stack->host_completed_packets){ 7039 hci_host_num_completed_packets(); 7040 return; 7041 } 7042 #endif 7043 7044 if (!hci_can_send_command_packet_now()) return; 7045 7046 // global/non-connection oriented commands 7047 7048 7049 #ifdef ENABLE_CLASSIC 7050 // general gap classic 7051 done = hci_run_general_gap_classic(); 7052 if (done) return; 7053 #endif 7054 7055 #ifdef ENABLE_BLE 7056 // general gap le 7057 done = hci_run_general_gap_le(); 7058 if (done) return; 7059 7060 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7061 // ISO related tasks, e.g. BIG create/terminate/sync 7062 done = hci_run_iso_tasks(); 7063 if (done) return; 7064 #endif 7065 #endif 7066 7067 // send pending HCI commands 7068 hci_run_general_pending_commands(); 7069 } 7070 7071 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7072 // house-keeping 7073 7074 #ifdef ENABLE_CLASSIC 7075 bd_addr_t addr; 7076 hci_connection_t * conn; 7077 #endif 7078 #ifdef ENABLE_LE_CENTRAL 7079 uint8_t initiator_filter_policy; 7080 #endif 7081 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7082 uint8_t i; 7083 uint8_t num_cis; 7084 hci_con_handle_t cis_handle; 7085 uint8_t status; 7086 #endif 7087 7088 uint16_t opcode = little_endian_read_16(packet, 0); 7089 switch (opcode) { 7090 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7091 hci_stack->loopback_mode = packet[3]; 7092 break; 7093 7094 #ifdef ENABLE_CLASSIC 7095 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7096 reverse_bd_addr(&packet[3], addr); 7097 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7098 7099 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7100 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7101 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7102 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7103 } 7104 7105 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7106 if (!conn) { 7107 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7108 if (!conn) { 7109 // notify client that alloc failed 7110 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7111 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7112 } 7113 conn->state = SEND_CREATE_CONNECTION; 7114 conn->role = HCI_ROLE_MASTER; 7115 } 7116 7117 log_info("conn state %u", conn->state); 7118 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7119 switch (conn->state) { 7120 // if connection active exists 7121 case OPEN: 7122 // and OPEN, emit connection complete command 7123 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7124 // packet not sent to controller 7125 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7126 case RECEIVED_DISCONNECTION_COMPLETE: 7127 // create connection triggered in disconnect complete event, let's do it now 7128 break; 7129 case SEND_CREATE_CONNECTION: 7130 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7131 if (hci_classic_operation_active()){ 7132 return ERROR_CODE_SUCCESS; 7133 } 7134 #endif 7135 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7136 break; 7137 default: 7138 // otherwise, just ignore as it is already in the open process 7139 // packet not sent to controller 7140 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7141 } 7142 conn->state = SENT_CREATE_CONNECTION; 7143 7144 // track outgoing connection 7145 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7146 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7147 break; 7148 7149 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 7150 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7151 // setup_synchronous_connection? Voice setting at offset 22 7152 // TODO: compare to current setting if sco connection already active 7153 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7154 break; 7155 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7156 // accept_synchronous_connection? Voice setting at offset 18 7157 // TODO: compare to current setting if sco connection already active 7158 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7159 // track outgoing connection 7160 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7161 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 7162 break; 7163 #endif 7164 #endif 7165 7166 #ifdef ENABLE_BLE 7167 #ifdef ENABLE_LE_CENTRAL 7168 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7169 // white list used? 7170 initiator_filter_policy = packet[7]; 7171 switch (initiator_filter_policy) { 7172 case 0: 7173 // whitelist not used 7174 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7175 break; 7176 case 1: 7177 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7178 break; 7179 default: 7180 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7181 break; 7182 } 7183 // track outgoing connection 7184 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 7185 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7186 break; 7187 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7188 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7189 break; 7190 #endif 7191 #endif /* ENABLE_BLE */ 7192 default: 7193 break; 7194 } 7195 7196 hci_stack->num_cmd_packets--; 7197 7198 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7199 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7200 if (err != 0){ 7201 return ERROR_CODE_HARDWARE_FAILURE; 7202 } 7203 return ERROR_CODE_SUCCESS; 7204 } 7205 7206 // disconnect because of security block 7207 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7208 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7209 if (!connection) return; 7210 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7211 } 7212 7213 7214 // Configure Secure Simple Pairing 7215 7216 #ifdef ENABLE_CLASSIC 7217 7218 // enable will enable SSP during init 7219 void gap_ssp_set_enable(int enable){ 7220 hci_stack->ssp_enable = enable; 7221 } 7222 7223 static int hci_local_ssp_activated(void){ 7224 return gap_ssp_supported() && hci_stack->ssp_enable; 7225 } 7226 7227 // if set, BTstack will respond to io capability request using authentication requirement 7228 void gap_ssp_set_io_capability(int io_capability){ 7229 hci_stack->ssp_io_capability = io_capability; 7230 } 7231 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7232 hci_stack->ssp_authentication_requirement = authentication_requirement; 7233 } 7234 7235 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7236 void gap_ssp_set_auto_accept(int auto_accept){ 7237 hci_stack->ssp_auto_accept = auto_accept; 7238 } 7239 7240 void gap_secure_connections_enable(bool enable){ 7241 hci_stack->secure_connections_enable = enable; 7242 } 7243 bool gap_secure_connections_active(void){ 7244 return hci_stack->secure_connections_active; 7245 } 7246 7247 #endif 7248 7249 // va_list part of hci_send_cmd 7250 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7251 if (!hci_can_send_command_packet_now()){ 7252 log_error("hci_send_cmd called but cannot send packet now"); 7253 return ERROR_CODE_COMMAND_DISALLOWED; 7254 } 7255 7256 // for HCI INITIALIZATION 7257 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7258 hci_stack->last_cmd_opcode = cmd->opcode; 7259 7260 hci_reserve_packet_buffer(); 7261 uint8_t * packet = hci_stack->hci_packet_buffer; 7262 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7263 uint8_t status = hci_send_cmd_packet(packet, size); 7264 7265 // release packet buffer on error or for synchronous transport implementations 7266 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7267 hci_release_packet_buffer(); 7268 hci_emit_transport_packet_sent(); 7269 } 7270 7271 return status; 7272 } 7273 7274 /** 7275 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7276 */ 7277 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7278 va_list argptr; 7279 va_start(argptr, cmd); 7280 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7281 va_end(argptr); 7282 return status; 7283 } 7284 7285 // Create various non-HCI events. 7286 // TODO: generalize, use table similar to hci_create_command 7287 7288 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7289 // dump packet 7290 if (dump) { 7291 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7292 } 7293 7294 // dispatch to all event handlers 7295 btstack_linked_list_iterator_t it; 7296 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7297 while (btstack_linked_list_iterator_has_next(&it)){ 7298 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7299 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7300 } 7301 } 7302 7303 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7304 if (!hci_stack->acl_packet_handler) return; 7305 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7306 } 7307 7308 #ifdef ENABLE_CLASSIC 7309 static void hci_notify_if_sco_can_send_now(void){ 7310 // notify SCO sender if waiting 7311 if (!hci_stack->sco_waiting_for_can_send_now) return; 7312 if (hci_can_send_sco_packet_now()){ 7313 hci_stack->sco_waiting_for_can_send_now = 0; 7314 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7315 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7316 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7317 } 7318 } 7319 7320 // parsing end emitting has been merged to reduce code size 7321 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7322 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7323 7324 uint8_t * eir_data; 7325 ad_context_t context; 7326 const uint8_t * name; 7327 uint8_t name_len; 7328 7329 if (size < 3) return; 7330 7331 int event_type = hci_event_packet_get_type(packet); 7332 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7333 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7334 7335 switch (event_type){ 7336 case HCI_EVENT_INQUIRY_RESULT: 7337 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7338 if (size != (3 + (num_responses * 14))) return; 7339 break; 7340 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7341 if (size != 257) return; 7342 if (num_responses != 1) return; 7343 break; 7344 default: 7345 return; 7346 } 7347 7348 // event[1] is set at the end 7349 int i; 7350 for (i=0; i<num_responses;i++){ 7351 memset(event, 0, sizeof(event)); 7352 event[0] = GAP_EVENT_INQUIRY_RESULT; 7353 uint8_t event_size = 27; // if name is not set by EIR 7354 7355 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7356 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7357 (void)memcpy(&event[9], 7358 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7359 3); // class of device 7360 (void)memcpy(&event[12], 7361 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7362 2); // clock offset 7363 7364 switch (event_type){ 7365 case HCI_EVENT_INQUIRY_RESULT: 7366 // 14,15,16,17 = 0, size 18 7367 break; 7368 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7369 event[14] = 1; 7370 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7371 // 16,17 = 0, size 18 7372 break; 7373 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7374 event[14] = 1; 7375 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7376 // EIR packets only contain a single inquiry response 7377 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7378 name = NULL; 7379 // Iterate over EIR data 7380 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7381 uint8_t data_type = ad_iterator_get_data_type(&context); 7382 uint8_t data_size = ad_iterator_get_data_len(&context); 7383 const uint8_t * data = ad_iterator_get_data(&context); 7384 // Prefer Complete Local Name over Shortened Local Name 7385 switch (data_type){ 7386 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7387 if (name) continue; 7388 /* fall through */ 7389 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7390 name = data; 7391 name_len = data_size; 7392 break; 7393 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7394 if (data_size != 8) break; 7395 event[16] = 1; 7396 memcpy(&event[17], data, 8); 7397 break; 7398 default: 7399 break; 7400 } 7401 } 7402 if (name){ 7403 event[25] = 1; 7404 // truncate name if needed 7405 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7406 event[26] = len; 7407 (void)memcpy(&event[27], name, len); 7408 event_size += len; 7409 } 7410 break; 7411 default: 7412 return; 7413 } 7414 event[1] = event_size - 2; 7415 hci_emit_event(event, event_size, 1); 7416 } 7417 } 7418 #endif 7419 7420 void hci_emit_state(void){ 7421 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7422 uint8_t event[3]; 7423 event[0] = BTSTACK_EVENT_STATE; 7424 event[1] = sizeof(event) - 2u; 7425 event[2] = hci_stack->state; 7426 hci_emit_event(event, sizeof(event), 1); 7427 } 7428 7429 #ifdef ENABLE_CLASSIC 7430 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7431 uint8_t event[13]; 7432 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7433 event[1] = sizeof(event) - 2; 7434 event[2] = status; 7435 little_endian_store_16(event, 3, con_handle); 7436 reverse_bd_addr(address, &event[5]); 7437 event[11] = 1; // ACL connection 7438 event[12] = 0; // encryption disabled 7439 hci_emit_event(event, sizeof(event), 1); 7440 } 7441 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7442 if (disable_l2cap_timeouts) return; 7443 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7444 uint8_t event[4]; 7445 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7446 event[1] = sizeof(event) - 2; 7447 little_endian_store_16(event, 2, conn->con_handle); 7448 hci_emit_event(event, sizeof(event), 1); 7449 } 7450 #endif 7451 7452 #ifdef ENABLE_BLE 7453 #ifdef ENABLE_LE_CENTRAL 7454 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){ 7455 uint8_t event[21]; 7456 event[0] = HCI_EVENT_LE_META; 7457 event[1] = sizeof(event) - 2u; 7458 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7459 event[3] = status; 7460 little_endian_store_16(event, 4, con_handle); 7461 event[6] = 0; // TODO: role 7462 event[7] = address_type; 7463 reverse_bd_addr(address, &event[8]); 7464 little_endian_store_16(event, 14, 0); // interval 7465 little_endian_store_16(event, 16, 0); // latency 7466 little_endian_store_16(event, 18, 0); // supervision timeout 7467 event[20] = 0; // master clock accuracy 7468 hci_emit_event(event, sizeof(event), 1); 7469 } 7470 #endif 7471 #endif 7472 7473 static void hci_emit_transport_packet_sent(void){ 7474 // notify upper stack that it might be possible to send again 7475 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7476 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7477 } 7478 7479 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7480 uint8_t event[6]; 7481 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7482 event[1] = sizeof(event) - 2u; 7483 event[2] = 0; // status = OK 7484 little_endian_store_16(event, 3, con_handle); 7485 event[5] = reason; 7486 hci_emit_event(event, sizeof(event), 1); 7487 } 7488 7489 static void hci_emit_nr_connections_changed(void){ 7490 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7491 uint8_t event[3]; 7492 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7493 event[1] = sizeof(event) - 2u; 7494 event[2] = nr_hci_connections(); 7495 hci_emit_event(event, sizeof(event), 1); 7496 } 7497 7498 static void hci_emit_hci_open_failed(void){ 7499 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7500 uint8_t event[2]; 7501 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7502 event[1] = sizeof(event) - 2u; 7503 hci_emit_event(event, sizeof(event), 1); 7504 } 7505 7506 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7507 log_info("hci_emit_dedicated_bonding_result %u ", status); 7508 uint8_t event[9]; 7509 int pos = 0; 7510 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7511 event[pos++] = sizeof(event) - 2u; 7512 event[pos++] = status; 7513 reverse_bd_addr(address, &event[pos]); 7514 hci_emit_event(event, sizeof(event), 1); 7515 } 7516 7517 7518 #ifdef ENABLE_CLASSIC 7519 7520 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7521 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7522 uint8_t event[5]; 7523 int pos = 0; 7524 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7525 event[pos++] = sizeof(event) - 2; 7526 little_endian_store_16(event, 2, con_handle); 7527 pos += 2; 7528 event[pos++] = level; 7529 hci_emit_event(event, sizeof(event), 1); 7530 } 7531 7532 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7533 if (!connection) return LEVEL_0; 7534 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7535 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7536 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7537 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7538 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7539 // LEVEL 4 always requires 128 bit encrytion key size 7540 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7541 security_level = LEVEL_3; 7542 } 7543 return security_level; 7544 } 7545 7546 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7547 uint8_t event[4]; 7548 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7549 event[1] = sizeof(event) - 2; 7550 event[2] = discoverable; 7551 event[3] = connectable; 7552 hci_emit_event(event, sizeof(event), 1); 7553 } 7554 7555 // query if remote side supports eSCO 7556 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7557 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7558 if (!connection) return false; 7559 return (connection->remote_supported_features[0] & 1) != 0; 7560 } 7561 7562 static bool hci_ssp_supported(hci_connection_t * connection){ 7563 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7564 return (connection->bonding_flags & mask) == mask; 7565 } 7566 7567 // query if remote side supports SSP 7568 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7569 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7570 if (!connection) return false; 7571 return hci_ssp_supported(connection) ? 1 : 0; 7572 } 7573 7574 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7575 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7576 } 7577 7578 /** 7579 * Check if remote supported features query has completed 7580 */ 7581 bool hci_remote_features_available(hci_con_handle_t handle){ 7582 hci_connection_t * connection = hci_connection_for_handle(handle); 7583 if (!connection) return false; 7584 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7585 } 7586 7587 /** 7588 * Trigger remote supported features query 7589 */ 7590 7591 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7592 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7593 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7594 } 7595 } 7596 7597 void hci_remote_features_query(hci_con_handle_t con_handle){ 7598 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7599 if (!connection) return; 7600 hci_trigger_remote_features_for_connection(connection); 7601 hci_run(); 7602 } 7603 7604 // GAP API 7605 /** 7606 * @bbrief enable/disable bonding. default is enabled 7607 * @praram enabled 7608 */ 7609 void gap_set_bondable_mode(int enable){ 7610 hci_stack->bondable = enable ? 1 : 0; 7611 } 7612 /** 7613 * @brief Get bondable mode. 7614 * @return 1 if bondable 7615 */ 7616 int gap_get_bondable_mode(void){ 7617 return hci_stack->bondable; 7618 } 7619 7620 /** 7621 * @brief map link keys to security levels 7622 */ 7623 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7624 switch (link_key_type){ 7625 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7626 return LEVEL_4; 7627 case COMBINATION_KEY: 7628 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7629 return LEVEL_3; 7630 default: 7631 return LEVEL_2; 7632 } 7633 } 7634 7635 /** 7636 * @brief map link keys to secure connection yes/no 7637 */ 7638 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7639 switch (link_key_type){ 7640 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7641 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7642 return true; 7643 default: 7644 return false; 7645 } 7646 } 7647 7648 /** 7649 * @brief map link keys to authenticated 7650 */ 7651 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7652 switch (link_key_type){ 7653 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7654 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7655 return true; 7656 default: 7657 return false; 7658 } 7659 } 7660 7661 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7662 log_info("gap_mitm_protection_required_for_security_level %u", level); 7663 return level > LEVEL_2; 7664 } 7665 7666 /** 7667 * @brief get current security level 7668 */ 7669 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7670 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7671 if (!connection) return LEVEL_0; 7672 return gap_security_level_for_connection(connection); 7673 } 7674 7675 /** 7676 * @brief request connection to device to 7677 * @result GAP_AUTHENTICATION_RESULT 7678 */ 7679 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7680 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7681 if (!connection){ 7682 hci_emit_security_level(con_handle, LEVEL_0); 7683 return; 7684 } 7685 7686 btstack_assert(hci_is_le_connection(connection) == false); 7687 7688 // 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) 7689 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7690 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7691 requested_level = LEVEL_4; 7692 } 7693 7694 gap_security_level_t current_level = gap_security_level(con_handle); 7695 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7696 requested_level, connection->requested_security_level, current_level); 7697 7698 // authentication active if authentication request was sent or planned level > 0 7699 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7700 if (authentication_active){ 7701 // authentication already active 7702 if (connection->requested_security_level < requested_level){ 7703 // increase requested level as new level is higher 7704 // TODO: handle re-authentication when done 7705 connection->requested_security_level = requested_level; 7706 } 7707 } else { 7708 // no request active, notify if security sufficient 7709 if (requested_level <= current_level){ 7710 hci_emit_security_level(con_handle, current_level); 7711 return; 7712 } 7713 7714 // store request 7715 connection->requested_security_level = requested_level; 7716 7717 // start to authenticate connection 7718 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7719 7720 // request remote features if not already active, also trigger hci_run 7721 hci_remote_features_query(con_handle); 7722 } 7723 } 7724 7725 /** 7726 * @brief start dedicated bonding with device. disconnect after bonding 7727 * @param device 7728 * @param request MITM protection 7729 * @result GAP_DEDICATED_BONDING_COMPLETE 7730 */ 7731 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7732 7733 // create connection state machine 7734 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7735 7736 if (!connection){ 7737 return BTSTACK_MEMORY_ALLOC_FAILED; 7738 } 7739 7740 // delete linkn key 7741 gap_drop_link_key_for_bd_addr(device); 7742 7743 // configure LEVEL_2/3, dedicated bonding 7744 connection->state = SEND_CREATE_CONNECTION; 7745 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7746 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7747 connection->bonding_flags = BONDING_DEDICATED; 7748 7749 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7750 7751 // handle: connnection failure (connection complete != ok) 7752 // handle: authentication failure 7753 // handle: disconnect on done 7754 7755 hci_run(); 7756 7757 return 0; 7758 } 7759 7760 void gap_set_local_name(const char * local_name){ 7761 hci_stack->local_name = local_name; 7762 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7763 // also update EIR if not set by user 7764 if (hci_stack->eir_data == NULL){ 7765 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7766 } 7767 hci_run(); 7768 } 7769 #endif 7770 7771 7772 #ifdef ENABLE_BLE 7773 7774 #ifdef ENABLE_LE_CENTRAL 7775 void gap_start_scan(void){ 7776 hci_stack->le_scanning_enabled = true; 7777 hci_run(); 7778 } 7779 7780 void gap_stop_scan(void){ 7781 hci_stack->le_scanning_enabled = false; 7782 hci_run(); 7783 } 7784 7785 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7786 hci_stack->le_scan_type = scan_type; 7787 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7788 hci_stack->le_scan_interval = scan_interval; 7789 hci_stack->le_scan_window = scan_window; 7790 hci_stack->le_scanning_param_update = true; 7791 hci_run(); 7792 } 7793 7794 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7795 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7796 } 7797 7798 void gap_set_scan_duplicate_filter(bool enabled){ 7799 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 7800 } 7801 7802 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7803 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7804 if (!conn){ 7805 // disallow if le connection is already outgoing 7806 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7807 log_error("le connection already active"); 7808 return ERROR_CODE_COMMAND_DISALLOWED; 7809 } 7810 7811 log_info("gap_connect: no connection exists yet, creating context"); 7812 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7813 if (!conn){ 7814 // notify client that alloc failed 7815 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7816 log_info("gap_connect: failed to alloc hci_connection_t"); 7817 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7818 } 7819 7820 // set le connecting state 7821 if (hci_is_le_connection_type(addr_type)){ 7822 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7823 } 7824 7825 conn->state = SEND_CREATE_CONNECTION; 7826 log_info("gap_connect: send create connection next"); 7827 hci_run(); 7828 return ERROR_CODE_SUCCESS; 7829 } 7830 7831 if (!hci_is_le_connection(conn) || 7832 (conn->state == SEND_CREATE_CONNECTION) || 7833 (conn->state == SENT_CREATE_CONNECTION)) { 7834 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7835 log_error("gap_connect: classic connection or connect is already being created"); 7836 return GATT_CLIENT_IN_WRONG_STATE; 7837 } 7838 7839 // check if connection was just disconnected 7840 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7841 log_info("gap_connect: send create connection (again)"); 7842 conn->state = SEND_CREATE_CONNECTION; 7843 hci_run(); 7844 return ERROR_CODE_SUCCESS; 7845 } 7846 7847 log_info("gap_connect: context exists with state %u", conn->state); 7848 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7849 hci_run(); 7850 return ERROR_CODE_SUCCESS; 7851 } 7852 7853 // @assumption: only a single outgoing LE Connection exists 7854 static hci_connection_t * gap_get_outgoing_connection(void){ 7855 btstack_linked_item_t *it; 7856 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7857 hci_connection_t * conn = (hci_connection_t *) it; 7858 if (!hci_is_le_connection(conn)) continue; 7859 switch (conn->state){ 7860 case SEND_CREATE_CONNECTION: 7861 case SENT_CREATE_CONNECTION: 7862 return conn; 7863 default: 7864 break; 7865 }; 7866 } 7867 return NULL; 7868 } 7869 7870 uint8_t gap_connect_cancel(void){ 7871 hci_connection_t * conn; 7872 switch (hci_stack->le_connecting_request){ 7873 case LE_CONNECTING_IDLE: 7874 break; 7875 case LE_CONNECTING_WHITELIST: 7876 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7877 hci_run(); 7878 break; 7879 case LE_CONNECTING_DIRECT: 7880 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7881 conn = gap_get_outgoing_connection(); 7882 if (conn == NULL){ 7883 hci_run(); 7884 } else { 7885 switch (conn->state){ 7886 case SEND_CREATE_CONNECTION: 7887 // skip sending create connection and emit event instead 7888 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7889 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7890 btstack_memory_hci_connection_free( conn ); 7891 break; 7892 case SENT_CREATE_CONNECTION: 7893 // let hci_run_general_gap_le cancel outgoing connection 7894 hci_run(); 7895 break; 7896 default: 7897 break; 7898 } 7899 } 7900 break; 7901 default: 7902 btstack_unreachable(); 7903 break; 7904 } 7905 return ERROR_CODE_SUCCESS; 7906 } 7907 7908 /** 7909 * @brief Set connection parameters for outgoing connections 7910 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7911 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7912 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7913 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7914 * @param conn_latency, default: 4 7915 * @param supervision_timeout (unit: 10ms), default: 720 ms 7916 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7917 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7918 */ 7919 7920 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7921 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7922 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7923 hci_stack->le_connection_scan_interval = conn_scan_interval; 7924 hci_stack->le_connection_scan_window = conn_scan_window; 7925 hci_stack->le_connection_interval_min = conn_interval_min; 7926 hci_stack->le_connection_interval_max = conn_interval_max; 7927 hci_stack->le_connection_latency = conn_latency; 7928 hci_stack->le_supervision_timeout = supervision_timeout; 7929 hci_stack->le_minimum_ce_length = min_ce_length; 7930 hci_stack->le_maximum_ce_length = max_ce_length; 7931 } 7932 #endif 7933 7934 /** 7935 * @brief Updates the connection parameters for a given LE connection 7936 * @param handle 7937 * @param conn_interval_min (unit: 1.25ms) 7938 * @param conn_interval_max (unit: 1.25ms) 7939 * @param conn_latency 7940 * @param supervision_timeout (unit: 10ms) 7941 * @return 0 if ok 7942 */ 7943 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7944 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7945 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7946 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7947 connection->le_conn_interval_min = conn_interval_min; 7948 connection->le_conn_interval_max = conn_interval_max; 7949 connection->le_conn_latency = conn_latency; 7950 connection->le_supervision_timeout = supervision_timeout; 7951 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7952 hci_run(); 7953 return 0; 7954 } 7955 7956 /** 7957 * @brief Request an update of the connection parameter for a given LE connection 7958 * @param handle 7959 * @param conn_interval_min (unit: 1.25ms) 7960 * @param conn_interval_max (unit: 1.25ms) 7961 * @param conn_latency 7962 * @param supervision_timeout (unit: 10ms) 7963 * @return 0 if ok 7964 */ 7965 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7966 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7967 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7968 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7969 connection->le_conn_interval_min = conn_interval_min; 7970 connection->le_conn_interval_max = conn_interval_max; 7971 connection->le_conn_latency = conn_latency; 7972 connection->le_supervision_timeout = supervision_timeout; 7973 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7974 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7975 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7976 return 0; 7977 } 7978 7979 #ifdef ENABLE_LE_PERIPHERAL 7980 7981 /** 7982 * @brief Set Advertisement Data 7983 * @param advertising_data_length 7984 * @param advertising_data (max 31 octets) 7985 * @note data is not copied, pointer has to stay valid 7986 */ 7987 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7988 hci_stack->le_advertisements_data_len = advertising_data_length; 7989 hci_stack->le_advertisements_data = advertising_data; 7990 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7991 hci_run(); 7992 } 7993 7994 /** 7995 * @brief Set Scan Response Data 7996 * @param advertising_data_length 7997 * @param advertising_data (max 31 octets) 7998 * @note data is not copied, pointer has to stay valid 7999 */ 8000 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8001 hci_stack->le_scan_response_data_len = scan_response_data_length; 8002 hci_stack->le_scan_response_data = scan_response_data; 8003 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8004 hci_run(); 8005 } 8006 8007 /** 8008 * @brief Set Advertisement Parameters 8009 * @param adv_int_min 8010 * @param adv_int_max 8011 * @param adv_type 8012 * @param direct_address_type 8013 * @param direct_address 8014 * @param channel_map 8015 * @param filter_policy 8016 * 8017 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8018 */ 8019 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8020 uint8_t direct_address_typ, bd_addr_t direct_address, 8021 uint8_t channel_map, uint8_t filter_policy) { 8022 8023 hci_stack->le_advertisements_interval_min = adv_int_min; 8024 hci_stack->le_advertisements_interval_max = adv_int_max; 8025 hci_stack->le_advertisements_type = adv_type; 8026 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8027 hci_stack->le_advertisements_channel_map = channel_map; 8028 hci_stack->le_advertisements_filter_policy = filter_policy; 8029 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8030 6); 8031 8032 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8033 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8034 hci_run(); 8035 } 8036 8037 /** 8038 * @brief Enable/Disable Advertisements 8039 * @param enabled 8040 */ 8041 void gap_advertisements_enable(int enabled){ 8042 if (enabled == 0){ 8043 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8044 } else { 8045 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8046 } 8047 hci_update_advertisements_enabled_for_current_roles(); 8048 hci_run(); 8049 } 8050 8051 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8052 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8053 btstack_linked_list_iterator_t it; 8054 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8055 while (btstack_linked_list_iterator_has_next(&it)){ 8056 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8057 if ( item->advertising_handle == advertising_handle ) { 8058 return item; 8059 } 8060 } 8061 return NULL; 8062 } 8063 8064 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8065 // find free advertisement handle 8066 uint8_t advertisement_handle; 8067 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8068 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8069 } 8070 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8071 // clear 8072 memset(storage, 0, sizeof(le_advertising_set_t)); 8073 // copy params 8074 storage->advertising_handle = advertisement_handle; 8075 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8076 // add to list 8077 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8078 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8079 *out_advertising_handle = advertisement_handle; 8080 // set tasks and start 8081 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8082 hci_run(); 8083 return ERROR_CODE_SUCCESS; 8084 } 8085 8086 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8087 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8088 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8089 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8090 // set tasks and start 8091 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8092 hci_run(); 8093 return ERROR_CODE_SUCCESS; 8094 } 8095 8096 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8097 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8098 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8099 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8100 return ERROR_CODE_SUCCESS; 8101 } 8102 8103 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8104 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8105 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8106 memcpy(advertising_set->random_address, random_address, 6); 8107 // set tasks and start 8108 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8109 hci_run(); 8110 return ERROR_CODE_SUCCESS; 8111 } 8112 8113 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8114 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8115 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8116 advertising_set->adv_data = advertising_data; 8117 advertising_set->adv_data_len = advertising_data_length; 8118 // set tasks and start 8119 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8120 hci_run(); 8121 return ERROR_CODE_SUCCESS; 8122 } 8123 8124 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){ 8125 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8126 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8127 advertising_set->scan_data = scan_response_data; 8128 advertising_set->scan_data_len = scan_response_data_length; 8129 // set tasks and start 8130 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8131 hci_run(); 8132 return ERROR_CODE_SUCCESS; 8133 } 8134 8135 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8136 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8137 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8138 advertising_set->enable_timeout = timeout; 8139 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8140 // set tasks and start 8141 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8142 hci_run(); 8143 return ERROR_CODE_SUCCESS; 8144 } 8145 8146 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8147 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8148 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8149 // set tasks and start 8150 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8151 hci_run(); 8152 return ERROR_CODE_SUCCESS; 8153 } 8154 8155 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8156 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8157 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8158 // set tasks and start 8159 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8160 hci_run(); 8161 return ERROR_CODE_SUCCESS; 8162 } 8163 8164 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8165 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8166 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8167 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8168 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8169 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8170 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8171 // set tasks and start 8172 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8173 hci_run(); 8174 return ERROR_CODE_SUCCESS; 8175 } 8176 8177 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8178 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8179 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8180 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8181 return ERROR_CODE_SUCCESS; 8182 } 8183 8184 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8185 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8186 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8187 advertising_set->periodic_data = periodic_data; 8188 advertising_set->periodic_data_len = periodic_data_length; 8189 // set tasks and start 8190 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8191 hci_run(); 8192 return ERROR_CODE_SUCCESS; 8193 } 8194 8195 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8196 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8197 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8198 // set tasks and start 8199 advertising_set->periodic_include_adi = include_adi; 8200 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8201 hci_run(); 8202 return ERROR_CODE_SUCCESS; 8203 } 8204 8205 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8206 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8207 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8208 // set tasks and start 8209 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8210 hci_run(); 8211 return ERROR_CODE_SUCCESS; 8212 } 8213 8214 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8215 hci_stack->le_past_mode = mode; 8216 hci_stack->le_past_skip = skip; 8217 hci_stack->le_past_sync_timeout = sync_timeout; 8218 hci_stack->le_past_cte_type = cte_type; 8219 hci_stack->le_past_set_default_params = true; 8220 hci_run(); 8221 return ERROR_CODE_SUCCESS; 8222 } 8223 8224 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8225 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8226 if (hci_connection == NULL){ 8227 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8228 } 8229 hci_connection->le_past_sync_handle = sync_handle; 8230 hci_connection->le_past_service_data = service_data; 8231 hci_run(); 8232 return ERROR_CODE_SUCCESS; 8233 } 8234 8235 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8236 8237 #endif 8238 8239 #endif 8240 8241 void hci_le_set_own_address_type(uint8_t own_address_type){ 8242 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8243 if (own_address_type == hci_stack->le_own_addr_type) return; 8244 hci_stack->le_own_addr_type = own_address_type; 8245 8246 #ifdef ENABLE_LE_PERIPHERAL 8247 // update advertisement parameters, too 8248 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8249 hci_run(); 8250 #endif 8251 #ifdef ENABLE_LE_CENTRAL 8252 // note: we don't update scan parameters or modify ongoing connection attempts 8253 #endif 8254 } 8255 8256 void hci_le_random_address_set(const bd_addr_t random_address){ 8257 memcpy(hci_stack->le_random_address, random_address, 6); 8258 hci_stack->le_random_address_set = true; 8259 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8260 hci_run(); 8261 } 8262 8263 #endif 8264 8265 uint8_t gap_disconnect(hci_con_handle_t handle){ 8266 hci_connection_t * conn = hci_connection_for_handle(handle); 8267 if (!conn){ 8268 hci_emit_disconnection_complete(handle, 0); 8269 return 0; 8270 } 8271 // ignore if already disconnected 8272 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8273 return 0; 8274 } 8275 conn->state = SEND_DISCONNECT; 8276 hci_run(); 8277 return 0; 8278 } 8279 8280 int gap_read_rssi(hci_con_handle_t con_handle){ 8281 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8282 if (hci_connection == NULL) return 0; 8283 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8284 hci_run(); 8285 return 1; 8286 } 8287 8288 /** 8289 * @brief Get connection type 8290 * @param con_handle 8291 * @result connection_type 8292 */ 8293 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8294 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8295 if (!conn) return GAP_CONNECTION_INVALID; 8296 switch (conn->address_type){ 8297 case BD_ADDR_TYPE_LE_PUBLIC: 8298 case BD_ADDR_TYPE_LE_RANDOM: 8299 return GAP_CONNECTION_LE; 8300 case BD_ADDR_TYPE_SCO: 8301 return GAP_CONNECTION_SCO; 8302 case BD_ADDR_TYPE_ACL: 8303 return GAP_CONNECTION_ACL; 8304 default: 8305 return GAP_CONNECTION_INVALID; 8306 } 8307 } 8308 8309 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8310 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8311 if (!conn) return HCI_ROLE_INVALID; 8312 return (hci_role_t) conn->role; 8313 } 8314 8315 8316 #ifdef ENABLE_CLASSIC 8317 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8318 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8319 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8320 conn->request_role = role; 8321 hci_run(); 8322 return ERROR_CODE_SUCCESS; 8323 } 8324 #endif 8325 8326 #ifdef ENABLE_BLE 8327 8328 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){ 8329 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8330 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8331 8332 conn->le_phy_update_all_phys = all_phys; 8333 conn->le_phy_update_tx_phys = tx_phys; 8334 conn->le_phy_update_rx_phys = rx_phys; 8335 conn->le_phy_update_phy_options = phy_options; 8336 8337 hci_run(); 8338 8339 return 0; 8340 } 8341 8342 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8343 // check if already in list 8344 btstack_linked_list_iterator_t it; 8345 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8346 while (btstack_linked_list_iterator_has_next(&it)) { 8347 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 8348 if (entry->address_type != address_type) { 8349 continue; 8350 } 8351 if (memcmp(entry->address, address, 6) != 0) { 8352 continue; 8353 } 8354 // disallow if already scheduled to add 8355 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 8356 return ERROR_CODE_COMMAND_DISALLOWED; 8357 } 8358 // still on controller, but scheduled to remove -> re-add 8359 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 8360 return ERROR_CODE_SUCCESS; 8361 } 8362 // alloc and add to list 8363 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 8364 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8365 entry->address_type = address_type; 8366 (void)memcpy(entry->address, address, 6); 8367 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 8368 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 8369 return ERROR_CODE_SUCCESS; 8370 } 8371 8372 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8373 btstack_linked_list_iterator_t it; 8374 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8375 while (btstack_linked_list_iterator_has_next(&it)){ 8376 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8377 if (entry->address_type != address_type) { 8378 continue; 8379 } 8380 if (memcmp(entry->address, address, 6) != 0) { 8381 continue; 8382 } 8383 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8384 // remove from controller if already present 8385 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8386 } else { 8387 // directly remove entry from whitelist 8388 btstack_linked_list_iterator_remove(&it); 8389 btstack_memory_whitelist_entry_free(entry); 8390 } 8391 return ERROR_CODE_SUCCESS; 8392 } 8393 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8394 } 8395 8396 static void hci_whitelist_clear(void){ 8397 btstack_linked_list_iterator_t it; 8398 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8399 while (btstack_linked_list_iterator_has_next(&it)){ 8400 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8401 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8402 // remove from controller if already present 8403 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8404 continue; 8405 } 8406 // directly remove entry from whitelist 8407 btstack_linked_list_iterator_remove(&it); 8408 btstack_memory_whitelist_entry_free(entry); 8409 } 8410 } 8411 8412 /** 8413 * @brief Clear Whitelist 8414 * @return 0 if ok 8415 */ 8416 uint8_t gap_whitelist_clear(void){ 8417 hci_whitelist_clear(); 8418 hci_run(); 8419 return ERROR_CODE_SUCCESS; 8420 } 8421 8422 /** 8423 * @brief Add Device to Whitelist 8424 * @param address_typ 8425 * @param address 8426 * @return 0 if ok 8427 */ 8428 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8429 uint8_t status = hci_whitelist_add(address_type, address); 8430 if (status){ 8431 return status; 8432 } 8433 hci_run(); 8434 return ERROR_CODE_SUCCESS; 8435 } 8436 8437 /** 8438 * @brief Remove Device from Whitelist 8439 * @param address_typ 8440 * @param address 8441 * @return 0 if ok 8442 */ 8443 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8444 uint8_t status = hci_whitelist_remove(address_type, address); 8445 if (status){ 8446 return status; 8447 } 8448 hci_run(); 8449 return ERROR_CODE_SUCCESS; 8450 } 8451 8452 #ifdef ENABLE_LE_CENTRAL 8453 /** 8454 * @brief Connect with Whitelist 8455 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8456 * @return - if ok 8457 */ 8458 uint8_t gap_connect_with_whitelist(void){ 8459 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8460 return ERROR_CODE_COMMAND_DISALLOWED; 8461 } 8462 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8463 hci_run(); 8464 return ERROR_CODE_SUCCESS; 8465 } 8466 8467 /** 8468 * @brief Auto Connection Establishment - Start Connecting to device 8469 * @param address_typ 8470 * @param address 8471 * @return 0 if ok 8472 */ 8473 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8474 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8475 return ERROR_CODE_COMMAND_DISALLOWED; 8476 } 8477 8478 uint8_t status = hci_whitelist_add(address_type, address); 8479 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8480 return status; 8481 } 8482 8483 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8484 8485 hci_run(); 8486 return ERROR_CODE_SUCCESS; 8487 } 8488 8489 /** 8490 * @brief Auto Connection Establishment - Stop Connecting to device 8491 * @param address_typ 8492 * @param address 8493 * @return 0 if ok 8494 */ 8495 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8496 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8497 return ERROR_CODE_COMMAND_DISALLOWED; 8498 } 8499 8500 hci_whitelist_remove(address_type, address); 8501 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8502 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8503 } 8504 hci_run(); 8505 return 0; 8506 } 8507 8508 /** 8509 * @brief Auto Connection Establishment - Stop everything 8510 * @note Convenience function to stop all active auto connection attempts 8511 */ 8512 uint8_t gap_auto_connection_stop_all(void){ 8513 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8514 return ERROR_CODE_COMMAND_DISALLOWED; 8515 } 8516 hci_whitelist_clear(); 8517 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8518 hci_run(); 8519 return ERROR_CODE_SUCCESS; 8520 } 8521 8522 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8523 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8524 if (!conn) return 0; 8525 return conn->le_connection_interval; 8526 } 8527 #endif 8528 #endif 8529 8530 #ifdef ENABLE_CLASSIC 8531 /** 8532 * @brief Set Extended Inquiry Response data 8533 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8534 * @note has to be done before stack starts up 8535 */ 8536 void gap_set_extended_inquiry_response(const uint8_t * data){ 8537 hci_stack->eir_data = data; 8538 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8539 hci_run(); 8540 } 8541 8542 /** 8543 * @brief Start GAP Classic Inquiry 8544 * @param duration in 1.28s units 8545 * @return 0 if ok 8546 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8547 */ 8548 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8549 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8550 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8551 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8552 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8553 } 8554 hci_stack->inquiry_state = duration_in_1280ms_units; 8555 hci_stack->inquiry_max_period_length = 0; 8556 hci_stack->inquiry_min_period_length = 0; 8557 hci_run(); 8558 return 0; 8559 } 8560 8561 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8562 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8563 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8564 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8565 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8566 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8567 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8568 8569 hci_stack->inquiry_state = duration; 8570 hci_stack->inquiry_max_period_length = max_period_length; 8571 hci_stack->inquiry_min_period_length = min_period_length; 8572 hci_run(); 8573 return 0; 8574 } 8575 8576 /** 8577 * @brief Stop GAP Classic Inquiry 8578 * @return 0 if ok 8579 */ 8580 int gap_inquiry_stop(void){ 8581 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8582 // emit inquiry complete event, before it even started 8583 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8584 hci_emit_event(event, sizeof(event), 1); 8585 return 0; 8586 } 8587 switch (hci_stack->inquiry_state){ 8588 case GAP_INQUIRY_STATE_ACTIVE: 8589 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8590 hci_run(); 8591 return ERROR_CODE_SUCCESS; 8592 case GAP_INQUIRY_STATE_PERIODIC: 8593 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8594 hci_run(); 8595 return ERROR_CODE_SUCCESS; 8596 default: 8597 return ERROR_CODE_COMMAND_DISALLOWED; 8598 } 8599 } 8600 8601 void gap_inquiry_set_lap(uint32_t lap){ 8602 hci_stack->inquiry_lap = lap; 8603 } 8604 8605 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8606 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8607 hci_stack->inquiry_scan_window = inquiry_scan_window; 8608 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8609 hci_run(); 8610 } 8611 8612 8613 /** 8614 * @brief Remote Name Request 8615 * @param addr 8616 * @param page_scan_repetition_mode 8617 * @param clock_offset only used when bit 15 is set 8618 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8619 */ 8620 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8621 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8622 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8623 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8624 hci_stack->remote_name_clock_offset = clock_offset; 8625 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8626 hci_run(); 8627 return 0; 8628 } 8629 8630 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8631 hci_stack->gap_pairing_state = state; 8632 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8633 hci_run(); 8634 return 0; 8635 } 8636 8637 /** 8638 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8639 * @param addr 8640 * @param pin_data 8641 * @param pin_len 8642 * @return 0 if ok 8643 */ 8644 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8645 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8646 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8647 hci_stack->gap_pairing_pin_len = pin_len; 8648 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8649 } 8650 8651 /** 8652 * @brief Legacy Pairing Pin Code Response 8653 * @param addr 8654 * @param pin 8655 * @return 0 if ok 8656 */ 8657 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8658 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8659 } 8660 8661 /** 8662 * @brief Abort Legacy Pairing 8663 * @param addr 8664 * @param pin 8665 * @return 0 if ok 8666 */ 8667 int gap_pin_code_negative(bd_addr_t addr){ 8668 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8669 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8670 } 8671 8672 /** 8673 * @brief SSP Passkey Response 8674 * @param addr 8675 * @param passkey 8676 * @return 0 if ok 8677 */ 8678 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8679 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8680 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8681 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8682 } 8683 8684 /** 8685 * @brief Abort SSP Passkey Entry/Pairing 8686 * @param addr 8687 * @param pin 8688 * @return 0 if ok 8689 */ 8690 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8691 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8692 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8693 } 8694 8695 /** 8696 * @brief Accept SSP Numeric Comparison 8697 * @param addr 8698 * @param passkey 8699 * @return 0 if ok 8700 */ 8701 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8702 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8703 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8704 } 8705 8706 /** 8707 * @brief Abort SSP Numeric Comparison/Pairing 8708 * @param addr 8709 * @param pin 8710 * @return 0 if ok 8711 */ 8712 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8713 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8714 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8715 } 8716 8717 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8718 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8719 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8720 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8721 connectionSetAuthenticationFlags(conn, flag); 8722 hci_run(); 8723 return ERROR_CODE_SUCCESS; 8724 } 8725 #endif 8726 8727 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8728 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8729 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8730 } 8731 8732 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8733 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8734 } 8735 #endif 8736 8737 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8738 /** 8739 * @brief Report Remote OOB Data 8740 * @param bd_addr 8741 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8742 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8743 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8744 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8745 */ 8746 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){ 8747 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8748 if (connection == NULL) { 8749 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8750 } 8751 connection->classic_oob_c_192 = c_192; 8752 connection->classic_oob_r_192 = r_192; 8753 8754 // ignore P-256 if not supported by us 8755 if (hci_stack->secure_connections_active){ 8756 connection->classic_oob_c_256 = c_256; 8757 connection->classic_oob_r_256 = r_256; 8758 } 8759 8760 return ERROR_CODE_SUCCESS; 8761 } 8762 /** 8763 * @brief Generate new OOB data 8764 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8765 */ 8766 void gap_ssp_generate_oob_data(void){ 8767 hci_stack->classic_read_local_oob_data = true; 8768 hci_run(); 8769 } 8770 8771 #endif 8772 8773 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8774 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8775 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8776 if (connection == NULL) { 8777 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8778 } 8779 8780 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8781 connection->link_key_type = type; 8782 8783 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8784 } 8785 8786 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8787 /** 8788 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8789 * @param inquiry_mode see bluetooth_defines.h 8790 */ 8791 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8792 hci_stack->inquiry_mode = inquiry_mode; 8793 } 8794 8795 /** 8796 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8797 */ 8798 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8799 hci_stack->sco_voice_setting = voice_setting; 8800 } 8801 8802 /** 8803 * @brief Get SCO Voice Setting 8804 * @return current voice setting 8805 */ 8806 uint16_t hci_get_sco_voice_setting(void){ 8807 return hci_stack->sco_voice_setting; 8808 } 8809 8810 static int hci_have_usb_transport(void){ 8811 if (!hci_stack->hci_transport) return 0; 8812 const char * transport_name = hci_stack->hci_transport->name; 8813 if (!transport_name) return 0; 8814 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8815 } 8816 8817 /** @brief Get SCO packet length for current SCO Voice setting 8818 * @note Using SCO packets of the exact length is required for USB transfer 8819 * @return Length of SCO packets in bytes (not audio frames) 8820 */ 8821 uint16_t hci_get_sco_packet_length(void){ 8822 uint16_t sco_packet_length = 0; 8823 8824 #ifdef ENABLE_SCO_OVER_HCI 8825 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8826 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8827 8828 if (hci_have_usb_transport()){ 8829 // see Core Spec for H2 USB Transfer. 8830 // 3 byte SCO header + 24 bytes per connection 8831 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8832 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8833 } else { 8834 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8835 sco_packet_length = 3 + 60 * multiplier; 8836 // assert that it still fits inside an SCO buffer 8837 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8838 sco_packet_length = 3 + 60; 8839 } 8840 } 8841 #endif 8842 8843 #ifdef HAVE_SCO_TRANSPORT 8844 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8845 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8846 sco_packet_length = 3 + 60 * multiplier; 8847 #endif 8848 return sco_packet_length; 8849 } 8850 8851 /** 8852 * @brief Sets the master/slave policy 8853 * @param policy (0: attempt to become master, 1: let connecting device decide) 8854 */ 8855 void hci_set_master_slave_policy(uint8_t policy){ 8856 hci_stack->master_slave_policy = policy; 8857 } 8858 8859 #endif 8860 8861 HCI_STATE hci_get_state(void){ 8862 return hci_stack->state; 8863 } 8864 8865 #ifdef ENABLE_CLASSIC 8866 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8867 hci_stack->gap_classic_accept_callback = accept_callback; 8868 } 8869 #endif 8870 8871 /** 8872 * @brief Set callback for Bluetooth Hardware Error 8873 */ 8874 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8875 hci_stack->hardware_error_callback = fn; 8876 } 8877 8878 void hci_disconnect_all(void){ 8879 btstack_linked_list_iterator_t it; 8880 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8881 while (btstack_linked_list_iterator_has_next(&it)){ 8882 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8883 if (con->state == SENT_DISCONNECT) continue; 8884 con->state = SEND_DISCONNECT; 8885 } 8886 hci_run(); 8887 } 8888 8889 uint16_t hci_get_manufacturer(void){ 8890 return hci_stack->manufacturer; 8891 } 8892 8893 #ifdef ENABLE_BLE 8894 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8895 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8896 if (!hci_con) return NULL; 8897 return &hci_con->sm_connection; 8898 } 8899 8900 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8901 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8902 #endif 8903 8904 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8905 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8906 if (hci_connection == NULL) return 0; 8907 if (hci_is_le_connection(hci_connection)){ 8908 #ifdef ENABLE_BLE 8909 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8910 if (sm_conn->sm_connection_encrypted) { 8911 return sm_conn->sm_actual_encryption_key_size; 8912 } 8913 #endif 8914 } else { 8915 #ifdef ENABLE_CLASSIC 8916 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8917 return hci_connection->encryption_key_size; 8918 } 8919 #endif 8920 } 8921 return 0; 8922 } 8923 8924 bool gap_authenticated(hci_con_handle_t con_handle){ 8925 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8926 if (hci_connection == NULL) return false; 8927 8928 switch (hci_connection->address_type){ 8929 #ifdef ENABLE_BLE 8930 case BD_ADDR_TYPE_LE_PUBLIC: 8931 case BD_ADDR_TYPE_LE_RANDOM: 8932 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8933 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8934 #endif 8935 #ifdef ENABLE_CLASSIC 8936 case BD_ADDR_TYPE_SCO: 8937 case BD_ADDR_TYPE_ACL: 8938 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8939 #endif 8940 default: 8941 return false; 8942 } 8943 } 8944 8945 bool gap_secure_connection(hci_con_handle_t con_handle){ 8946 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8947 if (hci_connection == NULL) return 0; 8948 8949 switch (hci_connection->address_type){ 8950 #ifdef ENABLE_BLE 8951 case BD_ADDR_TYPE_LE_PUBLIC: 8952 case BD_ADDR_TYPE_LE_RANDOM: 8953 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8954 return hci_connection->sm_connection.sm_connection_sc != 0; 8955 #endif 8956 #ifdef ENABLE_CLASSIC 8957 case BD_ADDR_TYPE_SCO: 8958 case BD_ADDR_TYPE_ACL: 8959 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8960 #endif 8961 default: 8962 return false; 8963 } 8964 } 8965 8966 bool gap_bonded(hci_con_handle_t con_handle){ 8967 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8968 if (hci_connection == NULL) return 0; 8969 8970 #ifdef ENABLE_CLASSIC 8971 link_key_t link_key; 8972 link_key_type_t link_key_type; 8973 #endif 8974 switch (hci_connection->address_type){ 8975 #ifdef ENABLE_BLE 8976 case BD_ADDR_TYPE_LE_PUBLIC: 8977 case BD_ADDR_TYPE_LE_RANDOM: 8978 return hci_connection->sm_connection.sm_le_db_index >= 0; 8979 #endif 8980 #ifdef ENABLE_CLASSIC 8981 case BD_ADDR_TYPE_SCO: 8982 case BD_ADDR_TYPE_ACL: 8983 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8984 #endif 8985 default: 8986 return false; 8987 } 8988 } 8989 8990 #ifdef ENABLE_BLE 8991 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8992 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8993 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8994 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8995 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8996 return sm_conn->sm_connection_authorization_state; 8997 } 8998 #endif 8999 9000 #ifdef ENABLE_CLASSIC 9001 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){ 9002 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9003 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9004 conn->sniff_min_interval = sniff_min_interval; 9005 conn->sniff_max_interval = sniff_max_interval; 9006 conn->sniff_attempt = sniff_attempt; 9007 conn->sniff_timeout = sniff_timeout; 9008 hci_run(); 9009 return 0; 9010 } 9011 9012 /** 9013 * @brief Exit Sniff mode 9014 * @param con_handle 9015 @ @return 0 if ok 9016 */ 9017 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9018 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9019 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9020 conn->sniff_min_interval = 0xffff; 9021 hci_run(); 9022 return 0; 9023 } 9024 9025 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){ 9026 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9027 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9028 conn->sniff_subrating_max_latency = max_latency; 9029 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9030 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9031 hci_run(); 9032 return ERROR_CODE_SUCCESS; 9033 } 9034 9035 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){ 9036 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9037 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9038 conn->qos_service_type = service_type; 9039 conn->qos_token_rate = token_rate; 9040 conn->qos_peak_bandwidth = peak_bandwidth; 9041 conn->qos_latency = latency; 9042 conn->qos_delay_variation = delay_variation; 9043 hci_run(); 9044 return ERROR_CODE_SUCCESS; 9045 } 9046 9047 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9048 hci_stack->new_page_scan_interval = page_scan_interval; 9049 hci_stack->new_page_scan_window = page_scan_window; 9050 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9051 hci_run(); 9052 } 9053 9054 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9055 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9056 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9057 hci_run(); 9058 } 9059 9060 void gap_set_page_timeout(uint16_t page_timeout){ 9061 hci_stack->page_timeout = page_timeout; 9062 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9063 hci_run(); 9064 } 9065 9066 #endif 9067 9068 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9069 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9070 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9071 if (le_device_db_index >= le_device_db_max_count()) return; 9072 uint8_t offset = le_device_db_index >> 3; 9073 uint8_t mask = 1 << (le_device_db_index & 7); 9074 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9075 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9076 // note: go back to remove entries, otherwise, a remove + add will skip the add 9077 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9078 } 9079 } 9080 9081 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9082 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9083 if (le_device_db_index >= le_device_db_max_count()) return; 9084 uint8_t offset = le_device_db_index >> 3; 9085 uint8_t mask = 1 << (le_device_db_index & 7); 9086 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9087 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9088 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9089 } 9090 } 9091 9092 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9093 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9094 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9095 } 9096 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9097 // restart le resolving list update 9098 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9099 } 9100 return ERROR_CODE_SUCCESS; 9101 } 9102 #endif 9103 9104 #ifdef ENABLE_BLE 9105 #ifdef ENABLE_LE_CENTRAL 9106 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9107 9108 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9109 // check if already in list 9110 btstack_linked_list_iterator_t it; 9111 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9112 while (btstack_linked_list_iterator_has_next(&it)) { 9113 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9114 if (entry->sid != advertising_sid) { 9115 continue; 9116 } 9117 if (entry->address_type != address_type) { 9118 continue; 9119 } 9120 if (memcmp(entry->address, address, 6) != 0) { 9121 continue; 9122 } 9123 // disallow if already scheduled to add 9124 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9125 return ERROR_CODE_COMMAND_DISALLOWED; 9126 } 9127 // still on controller, but scheduled to remove -> re-add 9128 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9129 return ERROR_CODE_SUCCESS; 9130 } 9131 // alloc and add to list 9132 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9133 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9134 entry->sid = advertising_sid; 9135 entry->address_type = address_type; 9136 (void)memcpy(entry->address, address, 6); 9137 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9138 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9139 return ERROR_CODE_SUCCESS; 9140 } 9141 9142 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9143 btstack_linked_list_iterator_t it; 9144 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9145 while (btstack_linked_list_iterator_has_next(&it)){ 9146 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9147 if (entry->sid != advertising_sid) { 9148 continue; 9149 } 9150 if (entry->address_type != address_type) { 9151 continue; 9152 } 9153 if (memcmp(entry->address, address, 6) != 0) { 9154 continue; 9155 } 9156 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9157 // remove from controller if already present 9158 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9159 } else { 9160 // directly remove entry from whitelist 9161 btstack_linked_list_iterator_remove(&it); 9162 btstack_memory_periodic_advertiser_list_entry_free(entry); 9163 } 9164 return ERROR_CODE_SUCCESS; 9165 } 9166 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9167 } 9168 9169 static void hci_periodic_advertiser_list_clear(void){ 9170 btstack_linked_list_iterator_t it; 9171 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9172 while (btstack_linked_list_iterator_has_next(&it)){ 9173 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9174 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9175 // remove from controller if already present 9176 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9177 continue; 9178 } 9179 // directly remove entry from whitelist 9180 btstack_linked_list_iterator_remove(&it); 9181 btstack_memory_periodic_advertiser_list_entry_free(entry); 9182 } 9183 } 9184 9185 // free all entries unconditionally 9186 static void hci_periodic_advertiser_list_free(void){ 9187 btstack_linked_list_iterator_t lit; 9188 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 9189 while (btstack_linked_list_iterator_has_next(&lit)){ 9190 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 9191 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 9192 btstack_memory_periodic_advertiser_list_entry_free(entry); 9193 } 9194 } 9195 9196 uint8_t gap_periodic_advertiser_list_clear(void){ 9197 hci_periodic_advertiser_list_clear(); 9198 hci_run(); 9199 return ERROR_CODE_SUCCESS; 9200 } 9201 9202 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9203 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9204 if (status){ 9205 return status; 9206 } 9207 hci_run(); 9208 return ERROR_CODE_SUCCESS; 9209 } 9210 9211 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9212 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9213 if (status){ 9214 return status; 9215 } 9216 hci_run(); 9217 return ERROR_CODE_SUCCESS; 9218 } 9219 9220 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9221 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9222 // abort if already active 9223 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9224 return ERROR_CODE_COMMAND_DISALLOWED; 9225 } 9226 // store request 9227 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9228 hci_stack->le_periodic_sync_options = options; 9229 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9230 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9231 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9232 hci_stack->le_periodic_sync_skip = skip; 9233 hci_stack->le_periodic_sync_timeout = sync_timeout; 9234 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9235 9236 hci_run(); 9237 return ERROR_CODE_SUCCESS; 9238 } 9239 9240 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9241 // abort if not requested 9242 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9243 return ERROR_CODE_COMMAND_DISALLOWED; 9244 } 9245 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9246 hci_run(); 9247 return ERROR_CODE_SUCCESS; 9248 } 9249 9250 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9251 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9252 return ERROR_CODE_COMMAND_DISALLOWED; 9253 } 9254 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9255 hci_run(); 9256 return ERROR_CODE_SUCCESS; 9257 } 9258 9259 #endif 9260 #endif 9261 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9262 static uint8_t hci_iso_stream_create(hci_iso_type_t iso_type, hci_con_handle_t con_handle, uint8_t group_id, 9263 hci_iso_stream_state_t state) { 9264 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9265 if (iso_stream == NULL){ 9266 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 9267 } else { 9268 iso_stream->iso_type = iso_type; 9269 iso_stream->state = state; 9270 iso_stream->con_handle = con_handle; 9271 iso_stream->group_id = group_id; 9272 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9273 return ERROR_CODE_SUCCESS; 9274 } 9275 } 9276 9277 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9278 btstack_linked_list_iterator_t it; 9279 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9280 while (btstack_linked_list_iterator_has_next(&it)){ 9281 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9282 if (iso_stream->con_handle == con_handle ) { 9283 return iso_stream; 9284 } 9285 } 9286 return NULL; 9287 } 9288 9289 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 9290 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->con_handle, iso_stream->group_id); 9291 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9292 btstack_memory_hci_iso_stream_free(iso_stream); 9293 } 9294 9295 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 9296 btstack_linked_list_iterator_t it; 9297 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9298 while (btstack_linked_list_iterator_has_next(&it)){ 9299 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9300 if ((iso_stream->group_id == group_id) && 9301 (iso_stream->iso_type == iso_type)){ 9302 btstack_linked_list_iterator_remove(&it); 9303 btstack_memory_hci_iso_stream_free(iso_stream); 9304 } 9305 } 9306 } 9307 9308 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 9309 btstack_linked_list_iterator_t it; 9310 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9311 while (btstack_linked_list_iterator_has_next(&it)){ 9312 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9313 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 9314 (iso_stream->group_id == group_id)){ 9315 btstack_linked_list_iterator_remove(&it); 9316 btstack_memory_hci_iso_stream_free(iso_stream); 9317 } 9318 } 9319 } 9320 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 9321 btstack_linked_list_iterator_t it; 9322 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9323 while (btstack_linked_list_iterator_has_next(&it)){ 9324 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9325 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 9326 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 9327 } 9328 } 9329 } 9330 9331 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 9332 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 9333 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 9334 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 9335 return (sdu_len_offset + 2 + sdu_len) == size; 9336 } 9337 9338 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 9339 if (hci_stack->iso_packet_handler == NULL) { 9340 return; 9341 } 9342 if (size < 4) { 9343 return; 9344 } 9345 9346 // parse header 9347 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 9348 uint16_t iso_data_len = little_endian_read_16(packet, 2); 9349 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 9350 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 9351 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 9352 9353 // assert packet is complete 9354 if ((iso_data_len + 4u) != size){ 9355 return; 9356 } 9357 9358 if ((pb_flag & 0x01) == 0){ 9359 if (pb_flag == 0x02){ 9360 // The ISO_Data_Load field contains a header and a complete SDU. 9361 if (hci_iso_sdu_complete(packet, size)) { 9362 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 9363 } 9364 } else { 9365 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 9366 if (iso_stream == NULL){ 9367 return; 9368 } 9369 if (size > HCI_ISO_PAYLOAD_SIZE){ 9370 return; 9371 } 9372 memcpy(iso_stream->reassembly_buffer, packet, size); 9373 // fix pb_flag 9374 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 9375 iso_stream->reassembly_pos = size; 9376 } 9377 } else { 9378 // iso_data_load contains continuation or last fragment of an SDU 9379 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 9380 if (ts_flag != 0){ 9381 return; 9382 } 9383 // append fragment 9384 if (iso_stream == NULL){ 9385 return; 9386 } 9387 if (iso_stream->reassembly_pos == 0){ 9388 return; 9389 } 9390 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9391 // reset reassembly buffer 9392 iso_stream->reassembly_pos = 0; 9393 return; 9394 } 9395 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9396 iso_stream->reassembly_pos += iso_data_len; 9397 9398 // deliver if last fragment and SDU complete 9399 if (pb_flag == 0x03){ 9400 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9401 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9402 } 9403 iso_stream->reassembly_pos = 0; 9404 } 9405 } 9406 } 9407 9408 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9409 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9410 uint16_t pos = 0; 9411 event[pos++] = HCI_EVENT_META_GAP; 9412 event[pos++] = 4 + (2 * big->num_bis); 9413 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9414 event[pos++] = status; 9415 event[pos++] = big->big_handle; 9416 event[pos++] = big->num_bis; 9417 uint8_t i; 9418 for (i=0;i<big->num_bis;i++){ 9419 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9420 pos += 2; 9421 } 9422 hci_emit_event(event, pos, 0); 9423 } 9424 9425 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 9426 uint8_t event [6 + (MAX_NR_CIS * 2)]; 9427 uint16_t pos = 0; 9428 event[pos++] = HCI_EVENT_META_GAP; 9429 event[pos++] = 4 + (2 * cig->num_cis); 9430 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 9431 event[pos++] = status; 9432 event[pos++] = cig->cig_id; 9433 event[pos++] = cig->num_cis; 9434 uint8_t i; 9435 for (i=0;i<cig->num_cis;i++){ 9436 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 9437 pos += 2; 9438 } 9439 hci_emit_event(event, pos, 0); 9440 } 9441 9442 static void 9443 hci_emit_cis_created(uint8_t cig_id, hci_con_handle_t cis_con_handle, uint8_t status) { 9444 uint8_t event [7]; 9445 uint16_t pos = 0; 9446 event[pos++] = HCI_EVENT_META_GAP; 9447 event[pos++] = 5; 9448 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 9449 event[pos++] = status; 9450 event[pos++] = cig_id; 9451 little_endian_store_16(event, pos, cis_con_handle); 9452 pos += 2; 9453 hci_emit_event(event, pos, 0); 9454 } 9455 9456 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9457 uint8_t event [4]; 9458 uint16_t pos = 0; 9459 event[pos++] = HCI_EVENT_META_GAP; 9460 event[pos++] = 2; 9461 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9462 event[pos++] = big->big_handle; 9463 hci_emit_event(event, pos, 0); 9464 } 9465 9466 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9467 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9468 uint16_t pos = 0; 9469 event[pos++] = HCI_EVENT_META_GAP; 9470 event[pos++] = 4; 9471 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9472 event[pos++] = status; 9473 event[pos++] = big_sync->big_handle; 9474 event[pos++] = big_sync->num_bis; 9475 uint8_t i; 9476 for (i=0;i<big_sync->num_bis;i++){ 9477 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9478 pos += 2; 9479 } 9480 hci_emit_event(event, pos, 0); 9481 } 9482 9483 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 9484 uint8_t event [4]; 9485 uint16_t pos = 0; 9486 event[pos++] = HCI_EVENT_META_GAP; 9487 event[pos++] = 2; 9488 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9489 event[pos++] = big_handle; 9490 hci_emit_event(event, pos, 0); 9491 } 9492 9493 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9494 uint8_t event[6]; 9495 uint16_t pos = 0; 9496 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9497 event[pos++] = sizeof(event) - 2; 9498 event[pos++] = big->big_handle; 9499 event[pos++] = bis_index; 9500 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9501 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9502 } 9503 9504 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 9505 uint8_t event[4]; 9506 uint16_t pos = 0; 9507 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 9508 event[pos++] = sizeof(event) - 2; 9509 little_endian_store_16(event, pos, cis_con_handle); 9510 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9511 } 9512 9513 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9514 btstack_linked_list_iterator_t it; 9515 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9516 while (btstack_linked_list_iterator_has_next(&it)){ 9517 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9518 if ( big->big_handle == big_handle ) { 9519 return big; 9520 } 9521 } 9522 return NULL; 9523 } 9524 9525 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9526 btstack_linked_list_iterator_t it; 9527 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9528 while (btstack_linked_list_iterator_has_next(&it)){ 9529 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9530 if ( big_sync->big_handle == big_handle ) { 9531 return big_sync; 9532 } 9533 } 9534 return NULL; 9535 } 9536 9537 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9538 hci_stack->iso_packets_to_queue = num_packets; 9539 } 9540 9541 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 9542 btstack_linked_list_iterator_t it; 9543 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 9544 while (btstack_linked_list_iterator_has_next(&it)){ 9545 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 9546 if ( cig->cig_id == cig_id ) { 9547 return cig; 9548 } 9549 } 9550 return NULL; 9551 } 9552 9553 static void hci_iso_notify_can_send_now(void){ 9554 9555 // BIG 9556 9557 btstack_linked_list_iterator_t it; 9558 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9559 while (btstack_linked_list_iterator_has_next(&it)){ 9560 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9561 // track number completed packet timestamps 9562 if (big->num_completed_timestamp_current_valid){ 9563 big->num_completed_timestamp_current_valid = false; 9564 if (big->num_completed_timestamp_previous_valid){ 9565 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 9566 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 9567 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 9568 big->num_completed_timestamp_previous_ms); 9569 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 9570 // to catch up, skip packet on all BIS 9571 uint8_t i; 9572 for (i=0;i<big->num_bis;i++){ 9573 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9574 if (iso_stream){ 9575 iso_stream->num_packets_to_skip++; 9576 } 9577 } 9578 } 9579 } 9580 big->num_completed_timestamp_previous_valid = true; 9581 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 9582 } 9583 9584 if (big->can_send_now_requested){ 9585 // check if no outgoing iso packets pending and no can send now have to be emitted 9586 uint8_t i; 9587 bool can_send = true; 9588 uint8_t num_iso_queued_minimum = 0; 9589 for (i=0;i<big->num_bis;i++){ 9590 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9591 if (iso_stream == NULL) continue; 9592 // handle case where individual ISO packet was sent too late: 9593 // for each additionally queued packet, a new one needs to get skipped 9594 if (i==0){ 9595 num_iso_queued_minimum = iso_stream->num_packets_sent; 9596 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 9597 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 9598 iso_stream->num_packets_to_skip += num_packets_to_skip; 9599 iso_stream->num_packets_sent -= num_packets_to_skip; 9600 } 9601 // check if we can send now 9602 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9603 can_send = false; 9604 break; 9605 } 9606 } 9607 if (can_send){ 9608 // propagate can send now to individual streams 9609 big->can_send_now_requested = false; 9610 for (i=0;i<big->num_bis;i++){ 9611 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9612 iso_stream->emit_ready_to_send = true; 9613 } 9614 } 9615 } 9616 } 9617 9618 if (hci_stack->hci_packet_buffer_reserved) return; 9619 9620 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9621 while (btstack_linked_list_iterator_has_next(&it)){ 9622 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9623 // report bis ready 9624 uint8_t i; 9625 for (i=0;i<big->num_bis;i++){ 9626 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9627 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9628 iso_stream->emit_ready_to_send = false; 9629 hci_emit_bis_can_send_now(big, i); 9630 break; 9631 } 9632 } 9633 } 9634 9635 // CIS 9636 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9637 while (btstack_linked_list_iterator_has_next(&it)) { 9638 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 9639 if ((iso_stream->can_send_now_requested) && 9640 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 9641 iso_stream->can_send_now_requested = false; 9642 hci_emit_cis_can_send_now(iso_stream->con_handle); 9643 } 9644 } 9645 } 9646 9647 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9648 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9649 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9650 } 9651 if (big_params->num_bis == 0){ 9652 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9653 } 9654 if (big_params->num_bis > MAX_NR_BIS){ 9655 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9656 } 9657 9658 // reserve ISO Streams 9659 uint8_t i; 9660 uint8_t status = ERROR_CODE_SUCCESS; 9661 for (i=0;i<big_params->num_bis;i++){ 9662 status = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_CON_HANDLE_INVALID, big_params->big_handle, 9663 HCI_ISO_STREAM_STATE_REQUESTED); 9664 if (status != ERROR_CODE_SUCCESS) { 9665 break; 9666 } 9667 } 9668 9669 // free structs on error 9670 if (status != ERROR_CODE_SUCCESS){ 9671 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_params->big_handle); 9672 return status; 9673 } 9674 9675 le_audio_big_t * big = storage; 9676 big->big_handle = big_params->big_handle; 9677 big->params = big_params; 9678 big->state = LE_AUDIO_BIG_STATE_CREATE; 9679 big->num_bis = big_params->num_bis; 9680 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9681 9682 hci_run(); 9683 9684 return ERROR_CODE_SUCCESS; 9685 } 9686 9687 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9688 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9689 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9690 } 9691 if (big_sync_params->num_bis == 0){ 9692 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9693 } 9694 if (big_sync_params->num_bis > MAX_NR_BIS){ 9695 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9696 } 9697 9698 le_audio_big_sync_t * big_sync = storage; 9699 big_sync->big_handle = big_sync_params->big_handle; 9700 big_sync->params = big_sync_params; 9701 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9702 big_sync->num_bis = big_sync_params->num_bis; 9703 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9704 9705 hci_run(); 9706 9707 return ERROR_CODE_SUCCESS; 9708 } 9709 9710 uint8_t gap_big_terminate(uint8_t big_handle){ 9711 le_audio_big_t * big = hci_big_for_handle(big_handle); 9712 if (big == NULL){ 9713 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9714 } 9715 switch (big->state){ 9716 case LE_AUDIO_BIG_STATE_CREATE: 9717 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9718 hci_emit_big_terminated(big); 9719 break; 9720 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9721 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9722 break; 9723 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9724 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9725 case LE_AUDIO_BIG_STATE_ACTIVE: 9726 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9727 hci_run(); 9728 break; 9729 default: 9730 return ERROR_CODE_COMMAND_DISALLOWED; 9731 } 9732 return ERROR_CODE_SUCCESS; 9733 } 9734 9735 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9736 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9737 if (big_sync == NULL){ 9738 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9739 } 9740 switch (big_sync->state){ 9741 case LE_AUDIO_BIG_STATE_CREATE: 9742 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9743 hci_emit_big_sync_stopped(big_handle); 9744 break; 9745 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9746 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9747 break; 9748 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9749 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9750 case LE_AUDIO_BIG_STATE_ACTIVE: 9751 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9752 hci_run(); 9753 break; 9754 default: 9755 return ERROR_CODE_COMMAND_DISALLOWED; 9756 } 9757 return ERROR_CODE_SUCCESS; 9758 } 9759 9760 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9761 le_audio_big_t * big = hci_big_for_handle(big_handle); 9762 if (big == NULL){ 9763 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9764 } 9765 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9766 return ERROR_CODE_COMMAND_DISALLOWED; 9767 } 9768 big->can_send_now_requested = true; 9769 hci_iso_notify_can_send_now(); 9770 return ERROR_CODE_SUCCESS; 9771 } 9772 9773 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 9774 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9775 if (iso_stream == NULL){ 9776 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9777 } 9778 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 9779 return ERROR_CODE_COMMAND_DISALLOWED; 9780 } 9781 iso_stream->can_send_now_requested = true; 9782 hci_iso_notify_can_send_now(); 9783 return ERROR_CODE_SUCCESS; 9784 } 9785 9786 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 9787 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 9788 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9789 } 9790 if (cig_params->num_cis == 0){ 9791 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9792 } 9793 if (cig_params->num_cis > MAX_NR_BIS){ 9794 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9795 } 9796 9797 // reserve ISO Streams 9798 uint8_t i; 9799 uint8_t status = ERROR_CODE_SUCCESS; 9800 for (i=0;i<cig_params->num_cis;i++){ 9801 status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_CON_HANDLE_INVALID, cig_params->cig_id, 9802 HCI_ISO_STREAM_STATE_REQUESTED); 9803 if (status != ERROR_CODE_SUCCESS) { 9804 break; 9805 } 9806 } 9807 9808 // free structs on error 9809 if (status != ERROR_CODE_SUCCESS){ 9810 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 9811 return status; 9812 } 9813 9814 le_audio_cig_t * cig = storage; 9815 cig->cig_id = cig_params->cig_id; 9816 cig->num_cis = cig_params->num_cis; 9817 cig->params = cig_params; 9818 cig->state = LE_AUDIO_CIG_STATE_CREATE; 9819 for (i=0;i<cig->num_cis;i++){ 9820 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 9821 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 9822 } 9823 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 9824 9825 hci_run(); 9826 9827 return ERROR_CODE_SUCCESS; 9828 } 9829 9830 uint8_t gap_cis_create(uint8_t cig_handle, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 9831 le_audio_cig_t * cig = hci_cig_for_id(cig_handle); 9832 if (cig == NULL){ 9833 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9834 } 9835 9836 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 9837 return ERROR_CODE_COMMAND_DISALLOWED; 9838 } 9839 9840 // store ACL Connection Handles 9841 uint8_t i; 9842 for (i=0;i<cig->num_cis;i++){ 9843 // check that all con handles exit 9844 hci_con_handle_t cis_handle = cis_con_handles[i]; 9845 uint8_t j; 9846 bool found = false; 9847 for (j=0;j<cig->num_cis;j++){ 9848 if (cig->cis_con_handles[j] == cis_handle){ 9849 cig->acl_con_handles[j] = acl_con_handles[j]; 9850 found = true; 9851 break; 9852 } 9853 } 9854 if (!found){ 9855 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9856 } 9857 } 9858 9859 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 9860 hci_run(); 9861 9862 return ERROR_CODE_SUCCESS; 9863 } 9864 9865 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_con_handle, hci_iso_stream_state_t state){ 9866 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 9867 if (iso_stream != NULL){ 9868 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9869 } 9870 9871 uint8_t status = hci_iso_stream_create(HCI_ISO_TYPE_CIS, cis_con_handle, 9872 HCI_ISO_GROUP_ID_INVALID, state); 9873 if (status == ERROR_CODE_SUCCESS){ 9874 return status; 9875 } 9876 9877 hci_run(); 9878 return ERROR_CODE_SUCCESS; 9879 } 9880 9881 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 9882 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 9883 } 9884 9885 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 9886 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 9887 } 9888 9889 9890 #endif 9891 #endif /* ENABLE_BLE */ 9892 9893 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9894 void hci_setup_test_connections_fuzz(void){ 9895 hci_connection_t * conn; 9896 9897 // default address: 66:55:44:33:00:01 9898 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9899 9900 // setup Controller info 9901 hci_stack->num_cmd_packets = 255; 9902 hci_stack->acl_packets_total_num = 255; 9903 9904 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9905 addr[5] = 0x01; 9906 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9907 conn->con_handle = addr[5]; 9908 conn->role = HCI_ROLE_SLAVE; 9909 conn->state = RECEIVED_CONNECTION_REQUEST; 9910 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9911 9912 // setup incoming Classic SCO connection with con handle 0x0002 9913 addr[5] = 0x02; 9914 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9915 conn->con_handle = addr[5]; 9916 conn->role = HCI_ROLE_SLAVE; 9917 conn->state = RECEIVED_CONNECTION_REQUEST; 9918 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9919 9920 // setup ready Classic ACL connection with con handle 0x0003 9921 addr[5] = 0x03; 9922 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9923 conn->con_handle = addr[5]; 9924 conn->role = HCI_ROLE_SLAVE; 9925 conn->state = OPEN; 9926 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9927 9928 // setup ready Classic SCO connection with con handle 0x0004 9929 addr[5] = 0x04; 9930 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9931 conn->con_handle = addr[5]; 9932 conn->role = HCI_ROLE_SLAVE; 9933 conn->state = OPEN; 9934 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9935 9936 // setup ready LE ACL connection with con handle 0x005 and public address 9937 addr[5] = 0x05; 9938 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9939 conn->con_handle = addr[5]; 9940 conn->role = HCI_ROLE_SLAVE; 9941 conn->state = OPEN; 9942 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9943 conn->sm_connection.sm_connection_encrypted = 1; 9944 } 9945 9946 void hci_free_connections_fuzz(void){ 9947 btstack_linked_list_iterator_t it; 9948 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9949 while (btstack_linked_list_iterator_has_next(&it)){ 9950 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9951 btstack_linked_list_iterator_remove(&it); 9952 btstack_memory_hci_connection_free(con); 9953 } 9954 } 9955 void hci_simulate_working_fuzz(void){ 9956 hci_stack->le_scanning_param_update = false; 9957 hci_init_done(); 9958 hci_stack->num_cmd_packets = 255; 9959 } 9960 #endif 9961