1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 171 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 172 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 173 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 174 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 175 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 176 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 178 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 179 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 180 181 // enumerate supported commands 182 #define X(name, offset, bit) name, 183 enum { 184 SUPPORTED_HCI_COMMANDS 185 SUPPORTED_HCI_COMMANDS_COUNT 186 }; 187 #undef X 188 189 // prototypes 190 #ifdef ENABLE_CLASSIC 191 static void hci_update_scan_enable(void); 192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 193 static int hci_local_ssp_activated(void); 194 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 195 static bool hci_ssp_supported(hci_connection_t * connection); 196 static void hci_notify_if_sco_can_send_now(void); 197 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 198 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 199 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 200 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 201 static void hci_connection_timestamp(hci_connection_t *connection); 202 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 203 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 204 #endif 205 206 static int hci_power_control_on(void); 207 static void hci_power_control_off(void); 208 static void hci_state_reset(void); 209 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 210 static void hci_emit_transport_packet_sent(void); 211 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 212 static void hci_emit_nr_connections_changed(void); 213 static void hci_emit_hci_open_failed(void); 214 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 215 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 216 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 217 static void hci_run(void); 218 static bool hci_is_le_connection(hci_connection_t * connection); 219 220 #ifdef ENABLE_CLASSIC 221 static int hci_have_usb_transport(void); 222 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 223 #endif 224 225 #ifdef ENABLE_BLE 226 static bool hci_run_general_gap_le(void); 227 static void gap_privacy_clients_handle_ready(void); 228 static void gap_privacy_clients_notify(bd_addr_t new_random_address); 229 #ifdef ENABLE_LE_CENTRAL 230 // called from test/ble_client/advertising_data_parser.c 231 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 232 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 233 static hci_connection_t * gap_get_outgoing_le_connection(void); 234 static void hci_le_scan_stop(void); 235 #endif 236 #ifdef ENABLE_LE_PERIPHERAL 237 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 238 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 239 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 240 #endif /* ENABLE_LE_PERIPHERAL */ 241 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 242 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 243 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 244 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 245 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 246 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 247 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 248 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 249 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 250 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 251 static void hci_iso_notify_can_send_now(void); 252 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 253 static void hci_emit_big_terminated(const le_audio_big_t * big); 254 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 255 static void hci_emit_big_sync_stopped(uint8_t big_handle); 256 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 257 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 258 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 259 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 260 #endif /* ENABLE_BLE */ 261 262 // the STACK is here 263 #ifndef HAVE_MALLOC 264 static hci_stack_t hci_stack_static; 265 #endif 266 static hci_stack_t * hci_stack = NULL; 267 268 #ifdef ENABLE_CLASSIC 269 // default name 270 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 271 272 // test helper 273 static uint8_t disable_l2cap_timeouts = 0; 274 #endif 275 276 // reset connection state on create and on reconnect 277 // don't overwrite addr, con handle, role 278 static void hci_connection_init(hci_connection_t * conn){ 279 conn->authentication_flags = AUTH_FLAG_NONE; 280 conn->bonding_flags = 0; 281 conn->requested_security_level = LEVEL_0; 282 conn->link_key_type = INVALID_LINK_KEY; 283 #ifdef ENABLE_CLASSIC 284 conn->request_role = HCI_ROLE_INVALID; 285 conn->sniff_subrating_max_latency = 0xffff; 286 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 287 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 288 btstack_run_loop_set_timer_context(&conn->timeout, conn); 289 hci_connection_timestamp(conn); 290 #endif 291 conn->acl_recombination_length = 0; 292 conn->acl_recombination_pos = 0; 293 conn->num_packets_sent = 0; 294 295 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 296 #ifdef ENABLE_BLE 297 conn->le_phy_update_all_phys = 0xff; 298 #endif 299 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 300 conn->le_max_tx_octets = 27; 301 #endif 302 #ifdef ENABLE_CLASSIC_PAIRING_OOB 303 conn->classic_oob_c_192 = NULL; 304 conn->classic_oob_r_192 = NULL; 305 conn->classic_oob_c_256 = NULL; 306 conn->classic_oob_r_256 = NULL; 307 #endif 308 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 309 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 310 conn->le_past_advertising_handle = 0xff; 311 #endif 312 } 313 314 /** 315 * create connection for given address 316 * 317 * @return connection OR NULL, if no memory left 318 */ 319 static hci_connection_t * 320 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 321 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 322 323 hci_connection_t * conn = btstack_memory_hci_connection_get(); 324 if (!conn) return NULL; 325 hci_connection_init(conn); 326 327 bd_addr_copy(conn->address, addr); 328 conn->address_type = addr_type; 329 conn->con_handle = HCI_CON_HANDLE_INVALID; 330 conn->role = role; 331 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 332 333 return conn; 334 } 335 336 337 /** 338 * get le connection parameter range 339 * 340 * @return le connection parameter range struct 341 */ 342 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 343 *range = hci_stack->le_connection_parameter_range; 344 } 345 346 /** 347 * set le connection parameter range 348 * 349 */ 350 351 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 352 hci_stack->le_connection_parameter_range = *range; 353 } 354 355 /** 356 * @brief Test if connection parameters are inside in existing rage 357 * @param conn_interval_min (unit: 1.25ms) 358 * @param conn_interval_max (unit: 1.25ms) 359 * @param conn_latency 360 * @param supervision_timeout (unit: 10ms) 361 * @return 1 if included 362 */ 363 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 364 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 365 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 366 367 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 368 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 369 370 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 371 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 372 373 return 1; 374 } 375 376 /** 377 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 378 * @note: default: 1 379 * @param max_peripheral_connections 380 */ 381 #ifdef ENABLE_LE_PERIPHERAL 382 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 383 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 384 } 385 #endif 386 387 /** 388 * get hci connections iterator 389 * 390 * @return hci connections iterator 391 */ 392 393 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 394 btstack_linked_list_iterator_init(it, &hci_stack->connections); 395 } 396 397 /** 398 * get connection for a given handle 399 * 400 * @return connection OR NULL, if not found 401 */ 402 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 403 btstack_linked_list_iterator_t it; 404 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 405 while (btstack_linked_list_iterator_has_next(&it)){ 406 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 407 if ( item->con_handle == con_handle ) { 408 return item; 409 } 410 } 411 return NULL; 412 } 413 414 /** 415 * get connection for given address 416 * 417 * @return connection OR NULL, if not found 418 */ 419 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 420 btstack_linked_list_iterator_t it; 421 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 422 while (btstack_linked_list_iterator_has_next(&it)){ 423 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 424 if (connection->address_type != addr_type) continue; 425 if (memcmp(addr, connection->address, 6) != 0) continue; 426 return connection; 427 } 428 return NULL; 429 } 430 431 #ifdef ENABLE_CLASSIC 432 433 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 434 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 435 } 436 437 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 438 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 439 } 440 441 #ifdef ENABLE_SCO_OVER_HCI 442 static int hci_number_sco_connections(void){ 443 int connections = 0; 444 btstack_linked_list_iterator_t it; 445 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 446 while (btstack_linked_list_iterator_has_next(&it)){ 447 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 448 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 449 connections++; 450 } 451 return connections; 452 } 453 #endif 454 455 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 456 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 457 #ifdef HAVE_EMBEDDED_TICK 458 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 459 // connections might be timed out 460 hci_emit_l2cap_check_timeout(connection); 461 } 462 #else 463 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 464 // connections might be timed out 465 hci_emit_l2cap_check_timeout(connection); 466 } 467 #endif 468 } 469 470 static void hci_connection_timestamp(hci_connection_t *connection){ 471 #ifdef HAVE_EMBEDDED_TICK 472 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 473 #else 474 connection->timestamp = btstack_run_loop_get_time_ms(); 475 #endif 476 } 477 478 /** 479 * add authentication flags and reset timer 480 * @note: assumes classic connection 481 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 482 */ 483 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 484 bd_addr_t addr; 485 reverse_bd_addr(bd_addr, addr); 486 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 487 if (conn) { 488 connectionSetAuthenticationFlags(conn, flags); 489 hci_connection_timestamp(conn); 490 } 491 } 492 493 static bool hci_pairing_active(hci_connection_t * hci_connection){ 494 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 495 } 496 497 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 498 if (hci_pairing_active(hci_connection)) return; 499 if (ssp){ 500 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 501 } else { 502 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 503 } 504 // if we are initiator, we have sent an HCI Authenticate Request 505 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 506 507 // if we are responder, use minimal service security level as required level 508 if (!initiator){ 509 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 510 } 511 512 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 513 514 uint8_t event[12]; 515 event[0] = GAP_EVENT_PAIRING_STARTED; 516 event[1] = 10; 517 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 518 reverse_bd_addr(hci_connection->address, &event[4]); 519 event[10] = (uint8_t) ssp; 520 event[11] = (uint8_t) initiator; 521 hci_emit_event(event, sizeof(event), 1); 522 } 523 524 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 525 hci_connection->requested_security_level = LEVEL_0; 526 if (!hci_pairing_active(hci_connection)) return; 527 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 528 #ifdef ENABLE_CLASSIC_PAIRING_OOB 529 hci_connection->classic_oob_c_192 = NULL; 530 hci_connection->classic_oob_r_192 = NULL; 531 hci_connection->classic_oob_c_256 = NULL; 532 hci_connection->classic_oob_r_256 = NULL; 533 #endif 534 log_info("pairing complete, status %02x", status); 535 536 uint8_t event[11]; 537 event[0] = GAP_EVENT_PAIRING_COMPLETE; 538 event[1] = 9; 539 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 540 reverse_bd_addr(hci_connection->address, &event[4]); 541 event[10] = status; 542 hci_emit_event(event, sizeof(event), 1); 543 544 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 545 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 546 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 547 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 548 hci_connection->bonding_status = status; 549 } 550 } 551 552 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 553 hci_connection_t * conn = hci_connection_for_handle(handle); 554 if (!conn) return false; 555 return hci_pairing_active(conn); 556 } 557 558 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 559 if (!hci_stack->link_key_db) return; 560 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 561 hci_stack->link_key_db->delete_link_key(addr); 562 } 563 564 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 565 if (!hci_stack->link_key_db) return; 566 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 567 hci_stack->link_key_db->put_link_key(addr, link_key, type); 568 } 569 570 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 571 if (!hci_stack->link_key_db) return false; 572 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 573 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 574 return result; 575 } 576 577 void gap_delete_all_link_keys(void){ 578 bd_addr_t addr; 579 link_key_t link_key; 580 link_key_type_t type; 581 btstack_link_key_iterator_t it; 582 int ok = gap_link_key_iterator_init(&it); 583 if (!ok) { 584 log_error("could not initialize iterator"); 585 return; 586 } 587 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 588 gap_drop_link_key_for_bd_addr(addr); 589 } 590 gap_link_key_iterator_done(&it); 591 } 592 593 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 594 if (!hci_stack->link_key_db) return 0; 595 if (!hci_stack->link_key_db->iterator_init) return 0; 596 return hci_stack->link_key_db->iterator_init(it); 597 } 598 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 599 if (!hci_stack->link_key_db) return 0; 600 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 601 } 602 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 603 if (!hci_stack->link_key_db) return; 604 hci_stack->link_key_db->iterator_done(it); 605 } 606 #endif 607 608 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 609 switch (address_type){ 610 case BD_ADDR_TYPE_LE_PUBLIC: 611 case BD_ADDR_TYPE_LE_RANDOM: 612 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 613 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 614 return true; 615 default: 616 return false; 617 } 618 } 619 620 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 621 switch (address_type){ 622 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 623 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 624 return true; 625 default: 626 return false; 627 } 628 } 629 630 static bool hci_is_le_connection(hci_connection_t * connection){ 631 return hci_is_le_connection_type(connection->address_type); 632 } 633 634 /** 635 * count connections 636 */ 637 static int nr_hci_connections(void){ 638 int count = 0; 639 btstack_linked_item_t *it; 640 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 641 count++; 642 } 643 return count; 644 } 645 646 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 647 648 unsigned int num_packets_sent_classic = 0; 649 unsigned int num_packets_sent_le = 0; 650 651 btstack_linked_item_t *it; 652 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 653 hci_connection_t * connection = (hci_connection_t *) it; 654 if (hci_is_le_connection(connection)){ 655 num_packets_sent_le += connection->num_packets_sent; 656 } 657 if (connection->address_type == BD_ADDR_TYPE_ACL){ 658 num_packets_sent_classic += connection->num_packets_sent; 659 } 660 } 661 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 662 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 663 int free_slots_le = 0; 664 665 if (free_slots_classic < 0){ 666 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 667 return 0; 668 } 669 670 if (hci_stack->le_acl_packets_total_num){ 671 // if we have LE slots, they are used 672 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 673 if (free_slots_le < 0){ 674 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 675 return 0; 676 } 677 } else { 678 // otherwise, classic slots are used for LE, too 679 free_slots_classic -= num_packets_sent_le; 680 if (free_slots_classic < 0){ 681 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 682 return 0; 683 } 684 } 685 686 switch (address_type){ 687 case BD_ADDR_TYPE_UNKNOWN: 688 log_error("hci_number_free_acl_slots: unknown address type"); 689 return 0; 690 691 case BD_ADDR_TYPE_ACL: 692 return (uint16_t) free_slots_classic; 693 694 default: 695 if (hci_stack->le_acl_packets_total_num > 0){ 696 return (uint16_t) free_slots_le; 697 } 698 return (uint16_t) free_slots_classic; 699 } 700 } 701 702 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 703 // get connection type 704 hci_connection_t * connection = hci_connection_for_handle(con_handle); 705 if (!connection){ 706 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 707 return 0; 708 } 709 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 710 } 711 712 #ifdef ENABLE_CLASSIC 713 static int hci_number_free_sco_slots(void){ 714 unsigned int num_sco_packets_sent = 0; 715 btstack_linked_item_t *it; 716 if (hci_stack->synchronous_flow_control_enabled){ 717 // explicit flow control 718 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 719 hci_connection_t * connection = (hci_connection_t *) it; 720 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 721 num_sco_packets_sent += connection->num_packets_sent; 722 } 723 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 724 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 725 return 0; 726 } 727 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 728 } else { 729 // implicit flow control 730 int num_ready = 0; 731 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 732 hci_connection_t * connection = (hci_connection_t *) it; 733 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 734 if (connection->sco_tx_ready == 0) continue; 735 num_ready++; 736 } 737 return num_ready; 738 } 739 } 740 #endif 741 742 // only used to send HCI Host Number Completed Packets 743 static int hci_can_send_comand_packet_transport(void){ 744 if (hci_stack->hci_packet_buffer_reserved) return 0; 745 746 // check for async hci transport implementations 747 if (hci_stack->hci_transport->can_send_packet_now){ 748 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 749 return 0; 750 } 751 } 752 return 1; 753 } 754 755 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 756 bool hci_can_send_command_packet_now(void){ 757 if (hci_can_send_comand_packet_transport() == 0) return false; 758 return hci_stack->num_cmd_packets > 0u; 759 } 760 761 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 762 // check for async hci transport implementations 763 if (!hci_stack->hci_transport->can_send_packet_now) return true; 764 return hci_stack->hci_transport->can_send_packet_now(packet_type); 765 } 766 767 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 768 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 769 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 770 } 771 772 bool hci_can_send_acl_le_packet_now(void){ 773 if (hci_stack->hci_packet_buffer_reserved) return false; 774 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 775 } 776 777 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 778 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 779 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 780 } 781 782 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 783 if (hci_stack->hci_packet_buffer_reserved) return false; 784 return hci_can_send_prepared_acl_packet_now(con_handle); 785 } 786 787 #ifdef ENABLE_CLASSIC 788 bool hci_can_send_acl_classic_packet_now(void){ 789 if (hci_stack->hci_packet_buffer_reserved) return false; 790 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 791 } 792 793 bool hci_can_send_prepared_sco_packet_now(void){ 794 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 795 if (hci_have_usb_transport()){ 796 return hci_stack->sco_can_send_now; 797 } else { 798 return hci_number_free_sco_slots() > 0; 799 } 800 } 801 802 bool hci_can_send_sco_packet_now(void){ 803 if (hci_stack->hci_packet_buffer_reserved) return false; 804 return hci_can_send_prepared_sco_packet_now(); 805 } 806 807 void hci_request_sco_can_send_now_event(void){ 808 hci_stack->sco_waiting_for_can_send_now = 1; 809 hci_notify_if_sco_can_send_now(); 810 } 811 #endif 812 813 // used for internal checks in l2cap.c 814 bool hci_is_packet_buffer_reserved(void){ 815 return hci_stack->hci_packet_buffer_reserved; 816 } 817 818 void hci_reserve_packet_buffer(void){ 819 btstack_assert(hci_stack->hci_packet_buffer_reserved == false); 820 hci_stack->hci_packet_buffer_reserved = true; 821 } 822 823 void hci_release_packet_buffer(void){ 824 btstack_assert(hci_stack->hci_packet_buffer_reserved); 825 hci_stack->hci_packet_buffer_reserved = false; 826 hci_emit_transport_packet_sent(); 827 } 828 829 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 830 static int hci_transport_synchronous(void){ 831 return hci_stack->hci_transport->can_send_packet_now == NULL; 832 } 833 834 // used for debugging 835 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 836 static void hci_controller_dump_packets(void){ 837 // format: "{handle:04x}:{count:02d} " 838 char summaries[3][7 * 8 + 1]; 839 uint16_t totals[3]; 840 uint8_t index; 841 for (index = 0 ; index < 3 ; index++){ 842 summaries[index][0] = 0; 843 totals[index] = 0; 844 } 845 btstack_linked_item_t *it; 846 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 847 hci_connection_t * connection = (hci_connection_t *) it; 848 switch (connection->address_type){ 849 case BD_ADDR_TYPE_ACL: 850 index = 0; 851 break; 852 case BD_ADDR_TYPE_SCO: 853 index = 2; 854 break; 855 default: 856 index = 1; 857 break; 858 } 859 totals[index] += connection->num_packets_sent; 860 char item_text[10]; 861 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 862 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 863 } 864 for (index = 0 ; index < 3 ; index++){ 865 if (summaries[index][0] == 0){ 866 summaries[index][0] = '-'; 867 summaries[index][1] = 0; 868 } 869 } 870 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 871 } 872 #endif 873 874 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 875 876 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 877 878 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 879 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 880 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 881 max_acl_data_packet_length = hci_stack->le_data_packets_length; 882 } 883 884 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 885 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 886 max_acl_data_packet_length = connection->le_max_tx_octets; 887 } 888 #endif 889 890 log_debug("hci_send_acl_packet_fragments entered"); 891 892 uint8_t status = ERROR_CODE_SUCCESS; 893 // multiple packets could be send on a synchronous HCI transport 894 while (true){ 895 896 log_debug("hci_send_acl_packet_fragments loop entered"); 897 898 // get current data 899 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 900 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 901 bool more_fragments = false; 902 903 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 904 if (current_acl_data_packet_length > max_acl_data_packet_length){ 905 more_fragments = true; 906 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 907 } 908 909 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 910 if (acl_header_pos > 0u){ 911 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 912 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 913 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 914 } 915 916 // update header len 917 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 918 919 // count packet 920 connection->num_packets_sent++; 921 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 922 923 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 924 if (more_fragments){ 925 // update start of next fragment to send 926 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 927 } else { 928 // done 929 hci_stack->acl_fragmentation_pos = 0; 930 hci_stack->acl_fragmentation_total_size = 0; 931 } 932 933 // send packet 934 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 935 const int size = current_acl_data_packet_length + 4; 936 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 937 hci_stack->acl_fragmentation_tx_active = 1; 938 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 939 if (err != 0){ 940 // no error from HCI Transport expected 941 status = ERROR_CODE_HARDWARE_FAILURE; 942 } 943 944 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 945 hci_controller_dump_packets(); 946 #endif 947 948 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 949 950 // done yet? 951 if (!more_fragments) break; 952 953 // can send more? 954 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 955 } 956 957 log_debug("hci_send_acl_packet_fragments loop over"); 958 959 // release buffer now for synchronous transport 960 if (hci_transport_synchronous()){ 961 hci_stack->acl_fragmentation_tx_active = 0; 962 hci_release_packet_buffer(); 963 } 964 965 return status; 966 } 967 968 // pre: caller has reserved the packet buffer 969 uint8_t hci_send_acl_packet_buffer(int size){ 970 btstack_assert(hci_stack->hci_packet_buffer_reserved); 971 972 uint8_t * packet = hci_stack->hci_packet_buffer; 973 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 974 975 hci_connection_t *connection = hci_connection_for_handle( con_handle); 976 if (!connection) { 977 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 978 hci_release_packet_buffer(); 979 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 980 } 981 982 // check for free places on Bluetooth module 983 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 984 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 985 hci_release_packet_buffer(); 986 return BTSTACK_ACL_BUFFERS_FULL; 987 } 988 989 #ifdef ENABLE_CLASSIC 990 hci_connection_timestamp(connection); 991 #endif 992 993 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 994 995 // setup data 996 hci_stack->acl_fragmentation_total_size = size; 997 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 998 999 return hci_send_acl_packet_fragments(connection); 1000 } 1001 1002 #ifdef ENABLE_CLASSIC 1003 // pre: caller has reserved the packet buffer 1004 uint8_t hci_send_sco_packet_buffer(int size){ 1005 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1006 1007 uint8_t * packet = hci_stack->hci_packet_buffer; 1008 1009 // skip checks in loopback mode 1010 if (!hci_stack->loopback_mode){ 1011 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1012 1013 // check for free places on Bluetooth module 1014 if (!hci_can_send_prepared_sco_packet_now()) { 1015 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1016 hci_release_packet_buffer(); 1017 return BTSTACK_ACL_BUFFERS_FULL; 1018 } 1019 1020 // track send packet in connection struct 1021 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1022 if (!connection) { 1023 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1024 hci_release_packet_buffer(); 1025 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1026 } 1027 1028 if (hci_have_usb_transport()){ 1029 // token used 1030 hci_stack->sco_can_send_now = false; 1031 } else { 1032 if (hci_stack->synchronous_flow_control_enabled){ 1033 connection->num_packets_sent++; 1034 } else { 1035 connection->sco_tx_ready--; 1036 } 1037 } 1038 } 1039 1040 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1041 1042 #ifdef HAVE_SCO_TRANSPORT 1043 hci_stack->sco_transport->send_packet(packet, size); 1044 hci_release_packet_buffer(); 1045 hci_emit_transport_packet_sent(); 1046 1047 return 0; 1048 #else 1049 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1050 if (hci_transport_synchronous()){ 1051 hci_release_packet_buffer(); 1052 } 1053 1054 if (err != 0){ 1055 return ERROR_CODE_HARDWARE_FAILURE; 1056 } 1057 return ERROR_CODE_SUCCESS; 1058 #endif 1059 } 1060 #endif 1061 1062 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1063 static uint8_t hci_send_iso_packet_fragments(void){ 1064 1065 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1066 uint8_t status = ERROR_CODE_SUCCESS; 1067 // multiple packets could be send on a synchronous HCI transport 1068 while (true){ 1069 1070 // get current data 1071 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1072 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1073 bool more_fragments = false; 1074 1075 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1076 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1077 more_fragments = true; 1078 current_iso_data_packet_length = max_iso_data_packet_length; 1079 } 1080 1081 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1082 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1083 uint8_t pb_flags; 1084 if (iso_header_pos == 0u){ 1085 // first fragment, keep TS field 1086 pb_flags = more_fragments ? 0x00 : 0x02; 1087 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1088 } else { 1089 // later fragment, drop TS field 1090 pb_flags = more_fragments ? 0x01 : 0x03; 1091 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1092 } 1093 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1094 1095 // update header len 1096 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1097 1098 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1099 if (more_fragments){ 1100 // update start of next fragment to send 1101 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1102 } else { 1103 // done 1104 hci_stack->iso_fragmentation_pos = 0; 1105 hci_stack->iso_fragmentation_total_size = 0; 1106 } 1107 1108 // send packet 1109 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1110 const int size = current_iso_data_packet_length + 4; 1111 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1112 hci_stack->iso_fragmentation_tx_active = true; 1113 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1114 if (err != 0){ 1115 // no error from HCI Transport expected 1116 status = ERROR_CODE_HARDWARE_FAILURE; 1117 } 1118 1119 // done yet? 1120 if (!more_fragments) break; 1121 1122 // can send more? 1123 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1124 } 1125 1126 // release buffer now for synchronous transport 1127 if (hci_transport_synchronous()){ 1128 hci_stack->iso_fragmentation_tx_active = false; 1129 hci_release_packet_buffer(); 1130 hci_emit_transport_packet_sent(); 1131 } 1132 1133 return status; 1134 } 1135 1136 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1137 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1138 1139 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1140 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1141 if (iso_stream == NULL){ 1142 hci_release_packet_buffer(); 1143 hci_iso_notify_can_send_now(); 1144 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1145 } 1146 1147 // TODO: check for space on controller 1148 1149 // skip iso packets if needed 1150 if (iso_stream->num_packets_to_skip > 0){ 1151 iso_stream->num_packets_to_skip--; 1152 // pretend it was processed and trigger next one 1153 hci_release_packet_buffer(); 1154 hci_iso_notify_can_send_now(); 1155 return ERROR_CODE_SUCCESS; 1156 } 1157 1158 // track outgoing packet sent 1159 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1160 iso_stream->num_packets_sent++; 1161 1162 // setup data 1163 hci_stack->iso_fragmentation_total_size = size; 1164 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1165 1166 return hci_send_iso_packet_fragments(); 1167 } 1168 #endif 1169 1170 static void acl_handler(uint8_t *packet, uint16_t size){ 1171 1172 // get info 1173 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1174 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1175 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1176 uint16_t acl_length = READ_ACL_LENGTH(packet); 1177 1178 // ignore non-registered handle 1179 if (!conn){ 1180 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1181 return; 1182 } 1183 1184 // assert packet is complete 1185 if ((acl_length + 4u) != size){ 1186 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1187 return; 1188 } 1189 1190 #ifdef ENABLE_CLASSIC 1191 // update idle timestamp 1192 hci_connection_timestamp(conn); 1193 #endif 1194 1195 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1196 hci_stack->host_completed_packets = 1; 1197 conn->num_packets_completed++; 1198 #endif 1199 1200 // handle different packet types 1201 switch (acl_flags & 0x03u) { 1202 1203 case 0x01: // continuation fragment 1204 1205 // sanity checks 1206 if (conn->acl_recombination_pos == 0u) { 1207 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1208 return; 1209 } 1210 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1211 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1212 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1213 conn->acl_recombination_pos = 0; 1214 return; 1215 } 1216 1217 // append fragment payload (header already stored) 1218 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1219 &packet[4], acl_length); 1220 conn->acl_recombination_pos += acl_length; 1221 1222 // forward complete L2CAP packet if complete. 1223 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1224 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1225 // reset recombination buffer 1226 conn->acl_recombination_length = 0; 1227 conn->acl_recombination_pos = 0; 1228 } 1229 break; 1230 1231 case 0x02: { // first fragment 1232 1233 // sanity check 1234 if (conn->acl_recombination_pos) { 1235 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1236 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1237 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1238 } 1239 conn->acl_recombination_pos = 0; 1240 } 1241 1242 // peek into L2CAP packet! 1243 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1244 1245 // compare fragment size to L2CAP packet size 1246 if (acl_length >= (l2cap_length + 4u)){ 1247 // forward fragment as L2CAP packet 1248 hci_emit_acl_packet(packet, acl_length + 4u); 1249 } else { 1250 1251 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1252 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1253 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1254 return; 1255 } 1256 1257 // store first fragment and tweak acl length for complete package 1258 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1259 packet, acl_length + 4u); 1260 conn->acl_recombination_pos = acl_length + 4u; 1261 conn->acl_recombination_length = l2cap_length; 1262 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1263 } 1264 break; 1265 1266 } 1267 default: 1268 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1269 return; 1270 } 1271 1272 // execute main loop 1273 hci_run(); 1274 } 1275 1276 static void hci_connection_stop_timer(hci_connection_t * conn){ 1277 btstack_run_loop_remove_timer(&conn->timeout); 1278 #ifdef ENABLE_CLASSIC 1279 btstack_run_loop_remove_timer(&conn->timeout_sco); 1280 #endif 1281 } 1282 1283 static void hci_shutdown_connection(hci_connection_t *conn){ 1284 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1285 1286 #ifdef ENABLE_CLASSIC 1287 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1288 bd_addr_type_t addr_type = conn->address_type; 1289 #endif 1290 #ifdef HAVE_SCO_TRANSPORT 1291 hci_con_handle_t con_handle = conn->con_handle; 1292 #endif 1293 #endif 1294 1295 hci_connection_stop_timer(conn); 1296 1297 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1298 btstack_memory_hci_connection_free( conn ); 1299 1300 // now it's gone 1301 hci_emit_nr_connections_changed(); 1302 1303 #ifdef ENABLE_CLASSIC 1304 #ifdef ENABLE_SCO_OVER_HCI 1305 // update SCO 1306 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1307 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1308 } 1309 #endif 1310 #ifdef HAVE_SCO_TRANSPORT 1311 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1312 hci_stack->sco_transport->close(con_handle); 1313 } 1314 #endif 1315 #endif 1316 } 1317 1318 #ifdef ENABLE_CLASSIC 1319 1320 static const uint16_t hci_acl_packet_type_sizes[] = { 1321 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1322 HCI_ACL_DH1_SIZE, 0, 0, 0, 1323 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1324 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1325 }; 1326 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1327 0, // 3 slot packets 1328 1, // 5 slot packets 1329 25, // EDR 2 mpbs 1330 26, // EDR 3 mbps 1331 39, // 3 slot EDR packts 1332 40, // 5 slot EDR packet 1333 }; 1334 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1335 0x0f00, // 3 slot packets 1336 0xf000, // 5 slot packets 1337 0x1102, // EDR 2 mpbs 1338 0x2204, // EDR 3 mbps 1339 0x0300, // 3 slot EDR packts 1340 0x3000, // 5 slot EDR packet 1341 }; 1342 1343 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1344 // enable packet types based on size 1345 uint16_t packet_types = 0; 1346 unsigned int i; 1347 for (i=0;i<16;i++){ 1348 if (hci_acl_packet_type_sizes[i] == 0) continue; 1349 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1350 packet_types |= 1 << i; 1351 } 1352 } 1353 // disable packet types due to missing local supported features 1354 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1355 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1356 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1357 if (feature_set) continue; 1358 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1359 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1360 } 1361 return packet_types; 1362 } 1363 1364 uint16_t hci_usable_acl_packet_types(void){ 1365 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1366 // flip bits for "may not be used" 1367 return active_packet_types ^ 0x3306; 1368 } 1369 1370 void hci_enable_acl_packet_types(uint16_t packet_types){ 1371 hci_stack->enabled_packet_types_acl = packet_types; 1372 } 1373 1374 static const struct { 1375 uint8_t feature_index; 1376 uint16_t feature_packet_mask; 1377 } hci_sco_packet_type_feature_requirements[] = { 1378 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1379 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1380 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1381 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1382 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1383 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1384 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1385 }; 1386 1387 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1388 static const struct { 1389 uint16_t type; 1390 uint16_t payload_length; 1391 } hci_sco_packet_type_to_payload_length[] = { 1392 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1393 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1394 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1395 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1396 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1397 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1398 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1399 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1400 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1401 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1402 }; 1403 1404 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1405 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1406 unsigned int i; 1407 // disable packet types due to missing local supported features 1408 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1409 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1410 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1411 if (feature_set) continue; 1412 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1413 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1414 } 1415 return packet_types; 1416 } 1417 1418 uint16_t hci_usable_sco_packet_types(void){ 1419 return hci_stack->usable_packet_types_sco; 1420 } 1421 1422 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1423 uint8_t i; 1424 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1425 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1426 return hci_sco_packet_type_to_payload_length[i].payload_length; 1427 } 1428 } 1429 return 0; 1430 } 1431 1432 #endif 1433 1434 uint8_t* hci_get_outgoing_packet_buffer(void){ 1435 // hci packet buffer is >= acl data packet length 1436 return hci_stack->hci_packet_buffer; 1437 } 1438 1439 uint16_t hci_max_acl_data_packet_length(void){ 1440 return hci_stack->acl_data_packet_length; 1441 } 1442 1443 #ifdef ENABLE_CLASSIC 1444 bool hci_extended_sco_link_supported(void){ 1445 // No. 31, byte 3, bit 7 1446 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1447 } 1448 #endif 1449 1450 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1451 // No. 54, byte 6, bit 6 1452 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1453 } 1454 1455 #ifdef ENABLE_CLASSIC 1456 static bool gap_ssp_supported(void){ 1457 // No. 51, byte 6, bit 3 1458 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1459 } 1460 #endif 1461 1462 bool hci_classic_supported(void){ 1463 #ifdef ENABLE_CLASSIC 1464 // No. 37, byte 4, bit 5, = No BR/EDR Support 1465 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1466 #else 1467 return false; 1468 #endif 1469 } 1470 1471 bool hci_le_supported(void){ 1472 #ifdef ENABLE_BLE 1473 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1474 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1475 #else 1476 return false; 1477 #endif 1478 } 1479 1480 static bool hci_command_supported(uint8_t command_index){ 1481 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1482 } 1483 1484 #ifdef ENABLE_BLE 1485 1486 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1487 bool hci_le_extended_advertising_supported(void){ 1488 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1489 } 1490 #endif 1491 1492 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1493 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1494 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1495 } else { 1496 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1497 } 1498 } 1499 1500 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1501 *addr_type = hci_stack->le_own_addr_type; 1502 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1503 } 1504 1505 #ifdef ENABLE_LE_PERIPHERAL 1506 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1507 *addr_type = hci_stack->le_advertisements_own_addr_type; 1508 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1509 }; 1510 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1511 void gap_le_get_own_advertising_set_address(uint8_t * addr_type, bd_addr_t addr, uint8_t advertising_handle){ 1512 if (advertising_handle == 0){ 1513 gap_le_get_own_advertisements_address(addr_type, addr); 1514 } else { 1515 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 1516 if (advertising_set != NULL){ 1517 switch (advertising_set->extended_params.own_address_type){ 1518 case BD_ADDR_TYPE_LE_PUBLIC: 1519 *addr_type = BD_ADDR_TYPE_LE_PUBLIC; 1520 memcpy(addr, hci_stack->local_bd_addr, 6); 1521 break; 1522 case BD_ADDR_TYPE_LE_RANDOM: 1523 *addr_type = BD_ADDR_TYPE_LE_RANDOM; 1524 memcpy(addr, advertising_set->random_address, 6); 1525 break; 1526 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 1527 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 1528 // do nothing as random address was already set from enhanced connection complete 1529 break; 1530 default: 1531 break; 1532 } 1533 } 1534 } 1535 }; 1536 #endif 1537 #endif 1538 1539 #ifdef ENABLE_LE_CENTRAL 1540 1541 /** 1542 * @brief Get own addr type and address used for LE connections (Central) 1543 */ 1544 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1545 *addr_type = hci_stack->le_connection_own_addr_type; 1546 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1547 } 1548 1549 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1550 1551 uint16_t offset = 3; 1552 uint8_t num_reports = packet[offset]; 1553 offset += 1; 1554 1555 uint16_t i; 1556 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1557 for (i=0; (i<num_reports) && (offset < size);i++){ 1558 // sanity checks on data_length: 1559 uint8_t data_length = packet[offset + 8]; 1560 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1561 if ((offset + 9u + data_length + 1u) > size) return; 1562 // setup event 1563 uint8_t event_size = 10u + data_length; 1564 uint16_t pos = 0; 1565 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1566 event[pos++] = event_size; 1567 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1568 offset += 8; 1569 pos += 8; 1570 event[pos++] = packet[offset + 1 + data_length]; // rssi 1571 event[pos++] = data_length; 1572 offset++; 1573 (void)memcpy(&event[pos], &packet[offset], data_length); 1574 pos += data_length; 1575 offset += data_length + 1u; // rssi 1576 hci_emit_event(event, pos, 1); 1577 } 1578 } 1579 1580 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1581 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1582 uint16_t offset = 3; 1583 uint8_t num_reports = packet[offset++]; 1584 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1585 uint8_t i; 1586 for (i=0; (i<num_reports) && (offset < size);i++){ 1587 // sanity checks on data_length: 1588 uint16_t data_length = packet[offset + 23]; 1589 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1590 if ((offset + 24u + data_length) > size) return; 1591 uint16_t event_type = little_endian_read_16(packet, offset); 1592 offset += 2; 1593 if ((event_type & 0x10) != 0) { 1594 // setup legacy event 1595 uint8_t legacy_event_type; 1596 switch (event_type){ 1597 case 0b0010011: 1598 // ADV_IND 1599 legacy_event_type = 0; 1600 break; 1601 case 0b0010101: 1602 // ADV_DIRECT_IND 1603 legacy_event_type = 1; 1604 break; 1605 case 0b0010010: 1606 // ADV_SCAN_IND 1607 legacy_event_type = 2; 1608 break; 1609 case 0b0010000: 1610 // ADV_NONCONN_IND 1611 legacy_event_type = 3; 1612 break; 1613 case 0b0011011: 1614 case 0b0011010: 1615 // SCAN_RSP 1616 legacy_event_type = 4; 1617 break; 1618 default: 1619 legacy_event_type = 0; 1620 break; 1621 } 1622 uint16_t pos = 0; 1623 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1624 event[pos++] = 10u + data_length; 1625 event[pos++] = legacy_event_type; 1626 // copy address type + address 1627 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1628 offset += 7; 1629 pos += 7; 1630 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1631 offset += 4; 1632 // copy rssi 1633 event[pos++] = packet[offset++]; 1634 // skip periodic advertising interval and direct address 1635 offset += 9; 1636 // copy data len + data; 1637 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1638 pos += 1 +data_length; 1639 offset += 1+ data_length; 1640 hci_emit_event(event, pos, 1); 1641 } else { 1642 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1643 uint8_t report_len = 24 + data_length; 1644 event[1] = report_len; 1645 little_endian_store_16(event, 2, event_type); 1646 memcpy(&event[4], &packet[offset], report_len); 1647 offset += report_len; 1648 hci_emit_event(event, 2 + report_len, 1); 1649 } 1650 } 1651 } 1652 #endif 1653 1654 #endif 1655 #endif 1656 1657 #ifdef ENABLE_BLE 1658 #ifdef ENABLE_LE_PERIPHERAL 1659 static void hci_update_advertisements_enabled_for_current_roles(void){ 1660 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1661 // get number of active le slave connections 1662 int num_slave_connections = 0; 1663 btstack_linked_list_iterator_t it; 1664 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1665 while (btstack_linked_list_iterator_has_next(&it)){ 1666 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1667 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1668 if (con->state != OPEN) continue; 1669 if (con->role != HCI_ROLE_SLAVE) continue; 1670 if (!hci_is_le_connection(con)) continue; 1671 num_slave_connections++; 1672 } 1673 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1674 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1675 } else { 1676 hci_stack->le_advertisements_enabled_for_current_roles = false; 1677 } 1678 } 1679 #endif 1680 #endif 1681 1682 #ifdef ENABLE_CLASSIC 1683 static void gap_run_set_local_name(void){ 1684 hci_reserve_packet_buffer(); 1685 uint8_t * packet = hci_stack->hci_packet_buffer; 1686 // construct HCI Command and send 1687 uint16_t opcode = hci_write_local_name.opcode; 1688 hci_stack->last_cmd_opcode = opcode; 1689 packet[0] = opcode & 0xff; 1690 packet[1] = opcode >> 8; 1691 packet[2] = DEVICE_NAME_LEN; 1692 memset(&packet[3], 0, DEVICE_NAME_LEN); 1693 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1694 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1695 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1696 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1697 // expand '00:00:00:00:00:00' in name with bd_addr 1698 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1699 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1700 } 1701 1702 static void gap_run_set_eir_data(void){ 1703 hci_reserve_packet_buffer(); 1704 uint8_t * packet = hci_stack->hci_packet_buffer; 1705 // construct HCI Command in-place and send 1706 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1707 hci_stack->last_cmd_opcode = opcode; 1708 uint16_t offset = 0; 1709 packet[offset++] = opcode & 0xff; 1710 packet[offset++] = opcode >> 8; 1711 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1712 packet[offset++] = 0; // FEC not required 1713 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1714 if (hci_stack->eir_data){ 1715 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1716 ad_context_t context; 1717 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1718 uint8_t data_type = ad_iterator_get_data_type(&context); 1719 uint8_t size = ad_iterator_get_data_len(&context); 1720 const uint8_t *data = ad_iterator_get_data(&context); 1721 // copy item 1722 packet[offset++] = size + 1; 1723 packet[offset++] = data_type; 1724 memcpy(&packet[offset], data, size); 1725 // update name item 1726 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1727 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1728 } 1729 offset += size; 1730 } 1731 } else { 1732 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1733 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1734 packet[offset++] = bytes_to_copy + 1; 1735 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1736 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1737 // expand '00:00:00:00:00:00' in name with bd_addr 1738 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1739 } 1740 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1741 } 1742 1743 static void hci_run_gap_tasks_classic(void){ 1744 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1745 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1746 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1747 return; 1748 } 1749 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1750 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1751 gap_run_set_local_name(); 1752 return; 1753 } 1754 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1755 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1756 gap_run_set_eir_data(); 1757 return; 1758 } 1759 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1760 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1761 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1762 return; 1763 } 1764 // write page scan activity 1765 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1766 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1767 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1768 return; 1769 } 1770 // write page scan type 1771 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1772 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1773 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1774 return; 1775 } 1776 // write page timeout 1777 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1778 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1779 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1780 return; 1781 } 1782 // send scan enable 1783 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1784 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1785 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1786 return; 1787 } 1788 // send write scan activity 1789 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1790 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1791 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1792 return; 1793 } 1794 // send write inquiry transmit power level 1795 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1796 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1797 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1798 return; 1799 } 1800 } 1801 #endif 1802 1803 #ifndef HAVE_HOST_CONTROLLER_API 1804 1805 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1806 if (!hci_stack->config) return 0; 1807 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1808 // Limit baud rate for Broadcom chipsets to 3 mbps 1809 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1810 baud_rate = 3000000; 1811 } 1812 return baud_rate; 1813 } 1814 1815 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1816 UNUSED(ds); 1817 1818 switch (hci_stack->substate){ 1819 case HCI_INIT_W4_SEND_RESET: 1820 log_info("Resend HCI Reset"); 1821 hci_stack->substate = HCI_INIT_SEND_RESET; 1822 hci_stack->num_cmd_packets = 1; 1823 hci_run(); 1824 break; 1825 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1826 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1827 if (hci_stack->hci_transport->reset_link){ 1828 hci_stack->hci_transport->reset_link(); 1829 } 1830 1831 /* fall through */ 1832 1833 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1834 log_info("Resend HCI Reset - CSR Warm Boot"); 1835 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1836 hci_stack->num_cmd_packets = 1; 1837 hci_run(); 1838 break; 1839 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1840 if (hci_stack->hci_transport->set_baudrate){ 1841 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1842 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1843 hci_stack->hci_transport->set_baudrate(baud_rate); 1844 } 1845 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1846 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1847 if (hci_stack->hci_transport->reset_link){ 1848 log_info("Link Reset"); 1849 hci_stack->hci_transport->reset_link(); 1850 } 1851 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1852 hci_run(); 1853 } 1854 break; 1855 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1856 // otherwise continue 1857 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1858 hci_send_cmd(&hci_read_local_supported_commands); 1859 break; 1860 default: 1861 break; 1862 } 1863 } 1864 #endif 1865 1866 static void hci_initializing_next_state(void){ 1867 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1868 } 1869 1870 static void hci_init_done(void){ 1871 // done. tell the app 1872 log_info("hci_init_done -> HCI_STATE_WORKING"); 1873 hci_stack->state = HCI_STATE_WORKING; 1874 hci_emit_state(); 1875 } 1876 1877 // assumption: hci_can_send_command_packet_now() == true 1878 static void hci_initializing_run(void){ 1879 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1880 1881 if (!hci_can_send_command_packet_now()) return; 1882 1883 #ifndef HAVE_HOST_CONTROLLER_API 1884 bool need_baud_change = hci_stack->config 1885 && hci_stack->chipset 1886 && hci_stack->chipset->set_baudrate_command 1887 && hci_stack->hci_transport->set_baudrate 1888 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1889 #endif 1890 1891 switch (hci_stack->substate){ 1892 case HCI_INIT_SEND_RESET: 1893 hci_state_reset(); 1894 1895 #ifndef HAVE_HOST_CONTROLLER_API 1896 // prepare reset if command complete not received in 100ms 1897 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1898 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1899 btstack_run_loop_add_timer(&hci_stack->timeout); 1900 #endif 1901 // send command 1902 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1903 hci_send_cmd(&hci_reset); 1904 break; 1905 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1906 hci_send_cmd(&hci_read_local_version_information); 1907 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1908 break; 1909 1910 #ifndef HAVE_HOST_CONTROLLER_API 1911 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1912 hci_state_reset(); 1913 // prepare reset if command complete not received in 100ms 1914 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1915 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1916 btstack_run_loop_add_timer(&hci_stack->timeout); 1917 // send command 1918 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1919 hci_send_cmd(&hci_reset); 1920 break; 1921 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1922 hci_state_reset(); 1923 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1924 hci_send_cmd(&hci_reset); 1925 break; 1926 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1927 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1928 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1929 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1930 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1931 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1932 break; 1933 } 1934 case HCI_INIT_SET_BD_ADDR: 1935 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1936 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1937 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1938 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1939 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1940 break; 1941 case HCI_INIT_SEND_READ_LOCAL_NAME: 1942 #ifdef ENABLE_CLASSIC 1943 hci_send_cmd(&hci_read_local_name); 1944 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1945 break; 1946 #endif 1947 /* fall through */ 1948 1949 case HCI_INIT_SEND_BAUD_CHANGE: 1950 if (need_baud_change) { 1951 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1952 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1953 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1954 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1955 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1956 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1957 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1958 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1959 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1960 btstack_run_loop_add_timer(&hci_stack->timeout); 1961 } 1962 break; 1963 } 1964 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1965 1966 /* fall through */ 1967 1968 case HCI_INIT_CUSTOM_INIT: 1969 case HCI_INIT_CUSTOM_PRE_INIT: 1970 // Custom initialization 1971 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1972 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1973 bool send_cmd = false; 1974 switch (hci_stack->chipset_result){ 1975 case BTSTACK_CHIPSET_VALID_COMMAND: 1976 send_cmd = true; 1977 switch (hci_stack->substate){ 1978 case HCI_INIT_CUSTOM_INIT: 1979 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1980 break; 1981 case HCI_INIT_CUSTOM_PRE_INIT: 1982 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1983 break; 1984 default: 1985 btstack_assert(false); 1986 break; 1987 } 1988 break; 1989 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1990 send_cmd = true; 1991 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1992 log_info("CSR Warm Boot"); 1993 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1994 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1995 btstack_run_loop_add_timer(&hci_stack->timeout); 1996 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1997 && hci_stack->config 1998 && hci_stack->chipset 1999 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2000 && hci_stack->hci_transport->set_baudrate 2001 && hci_transport_uart_get_main_baud_rate()){ 2002 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2003 } else { 2004 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2005 } 2006 break; 2007 default: 2008 break; 2009 } 2010 2011 if (send_cmd){ 2012 int size = 3u + hci_stack->hci_packet_buffer[2u]; 2013 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 2014 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 2015 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 2016 break; 2017 } 2018 log_info("Init script done"); 2019 2020 // Custom Pre-Init complete, start regular init with HCI Reset 2021 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2022 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2023 hci_send_cmd(&hci_reset); 2024 break; 2025 } 2026 2027 // Init script download on Broadcom chipsets causes: 2028 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2029 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2030 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2031 2032 // - baud rate to reset, restore UART baud rate if needed 2033 if (need_baud_change) { 2034 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2035 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2036 hci_stack->hci_transport->set_baudrate(baud_rate); 2037 } 2038 2039 uint16_t bcm_delay_ms = 300; 2040 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2041 // -> Work around: wait here. 2042 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2043 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2044 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2045 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2046 btstack_run_loop_add_timer(&hci_stack->timeout); 2047 break; 2048 } 2049 } 2050 #endif 2051 /* fall through */ 2052 2053 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2054 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2055 hci_send_cmd(&hci_read_local_supported_commands); 2056 break; 2057 case HCI_INIT_READ_BD_ADDR: 2058 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2059 hci_send_cmd(&hci_read_bd_addr); 2060 break; 2061 case HCI_INIT_READ_BUFFER_SIZE: 2062 // only read buffer size if supported 2063 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2064 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2065 hci_send_cmd(&hci_read_buffer_size); 2066 break; 2067 } 2068 2069 /* fall through */ 2070 2071 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2072 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2073 hci_send_cmd(&hci_read_local_supported_features); 2074 break; 2075 2076 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2077 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2078 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2079 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2080 break; 2081 case HCI_INIT_HOST_BUFFER_SIZE: 2082 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2083 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2084 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2085 break; 2086 #endif 2087 2088 case HCI_INIT_SET_EVENT_MASK: 2089 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2090 if (hci_le_supported()){ 2091 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2092 } else { 2093 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2094 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2095 } 2096 break; 2097 2098 case HCI_INIT_SET_EVENT_MASK_2: 2099 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2100 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2101 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2102 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2103 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2104 // Encryption Change Event v2 - bit 25 2105 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2106 break; 2107 } 2108 2109 #ifdef ENABLE_CLASSIC 2110 /* fall through */ 2111 2112 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2113 if (hci_classic_supported() && gap_ssp_supported()){ 2114 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2115 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2116 break; 2117 } 2118 2119 /* fall through */ 2120 2121 case HCI_INIT_WRITE_INQUIRY_MODE: 2122 if (hci_classic_supported()){ 2123 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2124 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2125 break; 2126 } 2127 2128 /* fall through */ 2129 2130 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2131 // skip write secure connections host support if not supported or disabled 2132 if (hci_classic_supported() && hci_stack->secure_connections_enable 2133 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2134 hci_stack->secure_connections_active = true; 2135 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2136 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2137 break; 2138 } 2139 2140 /* fall through */ 2141 2142 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2143 // skip set min encryption key size 2144 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2145 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2146 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2147 break; 2148 } 2149 2150 #ifdef ENABLE_SCO_OVER_HCI 2151 /* fall through */ 2152 2153 // only sent if ENABLE_SCO_OVER_HCI is defined 2154 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2155 // skip write synchronous flow control if not supported 2156 if (hci_classic_supported() 2157 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2158 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2159 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2160 break; 2161 } 2162 /* fall through */ 2163 2164 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2165 // skip write default erroneous data reporting if not supported 2166 if (hci_classic_supported() 2167 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2168 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2169 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2170 break; 2171 } 2172 #endif 2173 2174 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2175 /* fall through */ 2176 2177 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2178 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2179 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2180 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2181 #ifdef ENABLE_SCO_OVER_HCI 2182 log_info("BCM: Route SCO data via HCI transport"); 2183 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2184 #endif 2185 #ifdef ENABLE_SCO_OVER_PCM 2186 log_info("BCM: Route SCO data via PCM interface"); 2187 #ifdef ENABLE_BCM_PCM_WBS 2188 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2189 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2190 #else 2191 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2192 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2193 #endif 2194 #endif 2195 break; 2196 } 2197 #endif 2198 2199 #ifdef ENABLE_SCO_OVER_PCM 2200 /* fall through */ 2201 2202 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2203 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2204 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2205 log_info("BCM: Config PCM interface for I2S"); 2206 #ifdef ENABLE_BCM_PCM_WBS 2207 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2208 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2209 #else 2210 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2211 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2212 #endif 2213 break; 2214 } 2215 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2216 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2217 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2218 log_info("BCM: Config PCM Data format"); 2219 // msb first, fill bits 0, left justified 2220 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2221 break; 2222 } 2223 #ifdef HAVE_BCM_PCM2 2224 case HCI_INIT_BCM_PCM2_SETUP: 2225 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2226 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2227 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2228 uint32_t pcm_clock_freq; 2229 uint8_t ch_0_period; 2230 #ifdef ENABLE_BCM_PCM_WBS 2231 // 512 kHz, resample 8 kHz to 16 khz 2232 pcm_clock_freq = 512000; 2233 ch_0_period = 1; 2234 #else 2235 // 256 khz, 8 khz output 2236 pcm_clock_freq = 256000; 2237 ch_0_period = 0; 2238 #endif 2239 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2240 hci_send_cmd(&hci_bcm_pcm2_setup, 2241 0x00, // Action = Write 2242 0x00, // Test_Options = None 2243 op_mode, // Op_Mode 2244 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2245 pcm_clock_freq, // PCM_Clock_Freq 2246 0x01, // Sync_Signal_Width 2247 0x0F, // Slot_Width 2248 0x01, // NumberOfSlots 2249 0x00, // Bank_0_Fill_Mode = 0s 2250 0x00, // Bank_0_Number_of_Fill_Bits 2251 0x00, // Bank_0_Programmable_Fill_Data 2252 0x00, // Bank_1_Fill_Mode = 0s 2253 0x00, // Bank_1_Number_of_Fill_Bits 2254 0x00, // Bank_1_Programmable_Fill_Data 2255 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2256 0x00, // Ch_0_Slot_Number 2257 0x01, // Ch_1_Slot_Number 2258 0x02, // Ch_2_Slot_Number 2259 0x03, // Ch_3_Slot_Number 2260 0x04, // Ch_4_Slot_Number 2261 ch_0_period, // Ch_0_Period 2262 0x00, // Ch_1_Period 2263 0x00 // Ch_2_Period 2264 ); 2265 break; 2266 } 2267 #endif 2268 #endif /* ENABLE_SCO_OVER_PCM */ 2269 #endif /* ENABLE_CLASSIC */ 2270 2271 #ifdef ENABLE_BLE 2272 /* fall through */ 2273 2274 // LE INIT 2275 case HCI_INIT_LE_READ_BUFFER_SIZE: 2276 if (hci_le_supported()){ 2277 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2278 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2279 hci_send_cmd(&hci_le_read_buffer_size_v2); 2280 } else { 2281 hci_send_cmd(&hci_le_read_buffer_size); 2282 } 2283 break; 2284 } 2285 2286 /* fall through */ 2287 2288 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2289 // skip write le host if not supported (e.g. on LE only EM9301) 2290 if (hci_le_supported() 2291 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2292 // LE Supported Host = 1, Simultaneous Host = 0 2293 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2294 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2295 break; 2296 } 2297 2298 /* fall through */ 2299 2300 case HCI_INIT_LE_SET_EVENT_MASK: 2301 if (hci_le_supported()){ 2302 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2303 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2304 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2305 #else 2306 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2307 #endif 2308 break; 2309 } 2310 #endif 2311 2312 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2313 /* fall through */ 2314 2315 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2316 if (hci_le_supported() 2317 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2318 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2319 hci_send_cmd(&hci_le_read_maximum_data_length); 2320 break; 2321 } 2322 2323 /* fall through */ 2324 2325 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2326 if (hci_le_supported() 2327 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2328 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2329 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2330 break; 2331 } 2332 #endif 2333 2334 #ifdef ENABLE_LE_CENTRAL 2335 /* fall through */ 2336 2337 case HCI_INIT_READ_WHITE_LIST_SIZE: 2338 if (hci_le_supported()){ 2339 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2340 hci_send_cmd(&hci_le_read_white_list_size); 2341 break; 2342 } 2343 2344 #endif 2345 2346 #ifdef ENABLE_LE_PERIPHERAL 2347 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2348 /* fall through */ 2349 2350 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2351 if (hci_le_extended_advertising_supported()){ 2352 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2353 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2354 break; 2355 } 2356 #endif 2357 #endif 2358 /* fall through */ 2359 2360 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2361 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2362 if (hci_le_supported()) { 2363 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2364 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2365 break; 2366 } 2367 #endif 2368 2369 /* fall through */ 2370 2371 case HCI_INIT_DONE: 2372 hci_stack->substate = HCI_INIT_DONE; 2373 // main init sequence complete 2374 #ifdef ENABLE_CLASSIC 2375 // check if initial Classic GAP Tasks are completed 2376 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2377 hci_run_gap_tasks_classic(); 2378 break; 2379 } 2380 #endif 2381 #ifdef ENABLE_BLE 2382 #ifdef ENABLE_LE_CENTRAL 2383 // check if initial LE GAP Tasks are completed 2384 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2385 hci_run_general_gap_le(); 2386 break; 2387 } 2388 #endif 2389 #endif 2390 hci_init_done(); 2391 break; 2392 2393 default: 2394 return; 2395 } 2396 } 2397 2398 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2399 bool command_completed = false; 2400 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2401 uint16_t opcode = little_endian_read_16(packet,3); 2402 if (opcode == hci_stack->last_cmd_opcode){ 2403 command_completed = true; 2404 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2405 } else { 2406 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2407 } 2408 } 2409 2410 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2411 uint8_t status = packet[2]; 2412 uint16_t opcode = little_endian_read_16(packet,4); 2413 if (opcode == hci_stack->last_cmd_opcode){ 2414 if (status){ 2415 command_completed = true; 2416 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2417 } else { 2418 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2419 } 2420 } else { 2421 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2422 } 2423 } 2424 #ifndef HAVE_HOST_CONTROLLER_API 2425 // Vendor == CSR 2426 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2427 // TODO: track actual command 2428 command_completed = true; 2429 } 2430 2431 // Vendor == Toshiba 2432 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2433 // TODO: track actual command 2434 command_completed = true; 2435 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2436 hci_stack->num_cmd_packets = 1; 2437 } 2438 #endif 2439 2440 return command_completed; 2441 } 2442 2443 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2444 2445 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2446 2447 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2448 2449 #ifndef HAVE_HOST_CONTROLLER_API 2450 2451 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2452 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2453 // 2454 // HCI Reset 2455 // Timeout 100 ms 2456 // HCI Reset 2457 // Command Complete Reset 2458 // HCI Read Local Version Information 2459 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2460 // hang... 2461 // 2462 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2463 if (!command_completed 2464 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2465 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2466 2467 uint16_t opcode = little_endian_read_16(packet,3); 2468 if (opcode == hci_reset.opcode){ 2469 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2470 return; 2471 } 2472 } 2473 2474 // CSR & H5 2475 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2476 if (!command_completed 2477 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2478 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2479 2480 uint16_t opcode = little_endian_read_16(packet,3); 2481 if (opcode == hci_reset.opcode){ 2482 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2483 return; 2484 } 2485 } 2486 2487 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2488 // fix: Correct substate and behave as command below 2489 if (command_completed){ 2490 switch (hci_stack->substate){ 2491 case HCI_INIT_SEND_RESET: 2492 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2493 break; 2494 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2495 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2496 break; 2497 default: 2498 break; 2499 } 2500 } 2501 2502 #endif 2503 2504 if (!command_completed) return; 2505 2506 bool need_baud_change = false; 2507 bool need_addr_change = false; 2508 2509 #ifndef HAVE_HOST_CONTROLLER_API 2510 need_baud_change = hci_stack->config 2511 && hci_stack->chipset 2512 && hci_stack->chipset->set_baudrate_command 2513 && hci_stack->hci_transport->set_baudrate 2514 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2515 2516 need_addr_change = hci_stack->custom_bd_addr_set 2517 && hci_stack->chipset 2518 && hci_stack->chipset->set_bd_addr_command; 2519 #endif 2520 2521 switch(hci_stack->substate){ 2522 2523 #ifndef HAVE_HOST_CONTROLLER_API 2524 case HCI_INIT_SEND_RESET: 2525 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2526 // fix: just correct substate and behave as command below 2527 2528 /* fall through */ 2529 #endif 2530 2531 case HCI_INIT_W4_SEND_RESET: 2532 btstack_run_loop_remove_timer(&hci_stack->timeout); 2533 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2534 return; 2535 2536 #ifndef HAVE_HOST_CONTROLLER_API 2537 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2538 // for STLC2500D, baud rate change already happened. 2539 // for others, baud rate gets changed now 2540 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2541 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2542 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2543 hci_stack->hci_transport->set_baudrate(baud_rate); 2544 } 2545 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2546 return; 2547 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2548 btstack_run_loop_remove_timer(&hci_stack->timeout); 2549 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2550 return; 2551 case HCI_INIT_W4_CUSTOM_INIT: 2552 // repeat custom init 2553 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2554 return; 2555 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2556 // repeat custom init 2557 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2558 return; 2559 #endif 2560 2561 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2562 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2563 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2564 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2565 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2566 return; 2567 } 2568 if (need_addr_change){ 2569 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2570 return; 2571 } 2572 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2573 return; 2574 #ifndef HAVE_HOST_CONTROLLER_API 2575 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2576 if (need_baud_change){ 2577 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2578 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2579 hci_stack->hci_transport->set_baudrate(baud_rate); 2580 } 2581 if (need_addr_change){ 2582 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2583 return; 2584 } 2585 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2586 return; 2587 case HCI_INIT_W4_SET_BD_ADDR: 2588 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2589 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2590 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2591 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2592 return; 2593 } 2594 // skipping st warm boot 2595 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2596 return; 2597 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2598 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2599 return; 2600 #endif 2601 2602 case HCI_INIT_DONE: 2603 // set state if we came here by fall through 2604 hci_stack->substate = HCI_INIT_DONE; 2605 return; 2606 2607 default: 2608 break; 2609 } 2610 hci_initializing_next_state(); 2611 } 2612 2613 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2614 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2615 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2616 // check if we have been aware of the HCI connection 2617 switch (conn->state){ 2618 case SENT_CREATE_CONNECTION: 2619 case RECEIVED_CONNECTION_REQUEST: 2620 case ACCEPTED_CONNECTION_REQUEST: 2621 break; 2622 default: 2623 return; 2624 } 2625 2626 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2627 bd_addr_t bd_address; 2628 (void)memcpy(&bd_address, conn->address, 6); 2629 2630 #ifdef ENABLE_CLASSIC 2631 // cache needed data 2632 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2633 #endif 2634 2635 // connection failed, remove entry 2636 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2637 btstack_memory_hci_connection_free( conn ); 2638 2639 #ifdef ENABLE_CLASSIC 2640 // notify client if dedicated bonding 2641 if (notify_dedicated_bonding_failed){ 2642 log_info("hci notify_dedicated_bonding_failed"); 2643 hci_emit_dedicated_bonding_result(bd_address, status); 2644 } 2645 2646 // if authentication error, also delete link key 2647 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2648 gap_drop_link_key_for_bd_addr(bd_address); 2649 } 2650 #else 2651 UNUSED(status); 2652 #endif 2653 } 2654 2655 #ifdef ENABLE_CLASSIC 2656 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2657 // SSP Controller 2658 if (features[6] & (1 << 3)){ 2659 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2660 } 2661 // eSCO 2662 if (features[3] & (1<<7)){ 2663 conn->remote_supported_features[0] |= 1; 2664 } 2665 // Extended features 2666 if (features[7] & (1<<7)){ 2667 conn->remote_supported_features[0] |= 2; 2668 } 2669 // SCO packet types 2670 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2671 } 2672 2673 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2674 // SSP Host 2675 if (features[0] & (1 << 0)){ 2676 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2677 } 2678 // SC Host 2679 if (features[0] & (1 << 3)){ 2680 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2681 } 2682 } 2683 2684 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2685 // SC Controller 2686 if (features[1] & (1 << 0)){ 2687 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2688 } 2689 } 2690 2691 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2692 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2693 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2694 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2695 if (conn->bonding_flags & BONDING_DEDICATED){ 2696 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2697 } 2698 } 2699 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2700 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2701 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2702 } 2703 2704 #endif 2705 2706 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2707 // handle BT initialization 2708 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2709 hci_initializing_event_handler(packet, size); 2710 } 2711 2712 // help with BT sleep 2713 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2714 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2715 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2716 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2717 hci_initializing_next_state(); 2718 } 2719 } 2720 2721 #ifdef ENABLE_CLASSIC 2722 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2723 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2724 conn->requested_security_level = LEVEL_0; 2725 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2726 hci_emit_security_level(conn->con_handle, security_level); 2727 2728 // dedicated bonding 2729 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2730 conn->bonding_flags &= ~BONDING_DEDICATED; 2731 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2732 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2733 // emit dedicated bonding complete, don't disconnect 2734 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2735 #else 2736 // request disconnect, event is emitted after disconnect 2737 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2738 #endif 2739 } 2740 } 2741 2742 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2743 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2744 conn->encryption_key_size = encryption_key_size; 2745 2746 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2747 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2748 hci_handle_mutual_authentication_completed(conn); 2749 } else { 2750 // otherwise trigger remote feature request and send authentication request 2751 hci_trigger_remote_features_for_connection(conn); 2752 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2753 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2754 } 2755 } 2756 } 2757 #endif 2758 2759 static void hci_store_local_supported_commands(const uint8_t * packet){ 2760 // create mapping table 2761 #define X(name, offset, bit) { offset, bit }, 2762 static struct { 2763 uint8_t byte_offset; 2764 uint8_t bit_position; 2765 } supported_hci_commands_map [] = { 2766 SUPPORTED_HCI_COMMANDS 2767 }; 2768 #undef X 2769 2770 // create names for debug purposes 2771 #ifdef ENABLE_LOG_DEBUG 2772 #define X(name, offset, bit) #name, 2773 static const char * command_names[] = { 2774 SUPPORTED_HCI_COMMANDS 2775 }; 2776 #undef X 2777 #endif 2778 2779 hci_stack->local_supported_commands = 0; 2780 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2781 uint16_t i; 2782 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2783 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2784 #ifdef ENABLE_LOG_DEBUG 2785 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); 2786 #else 2787 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2788 #endif 2789 hci_stack->local_supported_commands |= (1LU << i); 2790 } 2791 } 2792 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2793 } 2794 2795 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2796 UNUSED(size); 2797 2798 uint8_t status = 0; 2799 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2800 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2801 } 2802 uint16_t manufacturer; 2803 #ifdef ENABLE_CLASSIC 2804 hci_connection_t * conn; 2805 #endif 2806 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2807 hci_con_handle_t handle; 2808 #endif 2809 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2810 le_audio_cig_t * cig; 2811 #endif 2812 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2813 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2814 #endif 2815 2816 // get num cmd packets - limit to 1 to reduce complexity 2817 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2818 2819 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2820 switch (opcode){ 2821 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2822 if (status) break; 2823 // terminate, name 248 chars 2824 packet[6+248] = 0; 2825 log_info("local name: %s", &packet[6]); 2826 break; 2827 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2828 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2829 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2830 uint16_t acl_len = little_endian_read_16(packet, 6); 2831 uint16_t sco_len = packet[8]; 2832 2833 // determine usable ACL/SCO payload size 2834 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2835 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2836 2837 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2838 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2839 2840 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2841 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2842 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2843 } 2844 break; 2845 case HCI_OPCODE_HCI_READ_RSSI: 2846 if (status == ERROR_CODE_SUCCESS){ 2847 uint8_t event[5]; 2848 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2849 event[1] = 3; 2850 (void)memcpy(&event[2], &packet[6], 3); 2851 hci_emit_event(event, sizeof(event), 1); 2852 } 2853 break; 2854 #ifdef ENABLE_BLE 2855 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2856 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2857 hci_stack->le_iso_packets_total_num = packet[11]; 2858 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2859 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2860 2861 /* fall through */ 2862 2863 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2864 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2865 hci_stack->le_acl_packets_total_num = packet[8]; 2866 // determine usable ACL payload size 2867 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2868 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2869 } 2870 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); 2871 break; 2872 #endif 2873 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2874 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2875 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2876 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2877 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); 2878 break; 2879 #endif 2880 #ifdef ENABLE_LE_CENTRAL 2881 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2882 hci_stack->le_whitelist_capacity = packet[6]; 2883 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2884 break; 2885 #endif 2886 #ifdef ENABLE_LE_PERIPHERAL 2887 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2888 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2889 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2890 break; 2891 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2892 if (hci_stack->le_advertising_set_in_current_command != 0) { 2893 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2894 hci_stack->le_advertising_set_in_current_command = 0; 2895 if (advertising_set == NULL) break; 2896 uint8_t adv_status = packet[6]; 2897 uint8_t tx_power = packet[7]; 2898 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 }; 2899 if (adv_status == 0){ 2900 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2901 } 2902 hci_emit_event(event, sizeof(event), 1); 2903 } 2904 break; 2905 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2906 if (hci_stack->le_advertising_set_in_current_command != 0) { 2907 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2908 hci_stack->le_advertising_set_in_current_command = 0; 2909 if (advertising_set == NULL) break; 2910 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2911 if (status == 0){ 2912 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2913 } 2914 hci_emit_event(event, sizeof(event), 1); 2915 } 2916 break; 2917 #endif 2918 #endif 2919 case HCI_OPCODE_HCI_READ_BD_ADDR: 2920 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2921 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2922 #ifdef ENABLE_CLASSIC 2923 if (hci_stack->link_key_db){ 2924 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2925 } 2926 #endif 2927 break; 2928 #ifdef ENABLE_CLASSIC 2929 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2930 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2931 break; 2932 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2933 if (status == ERROR_CODE_SUCCESS) { 2934 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2935 } else { 2936 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2937 } 2938 break; 2939 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2940 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2941 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2942 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2943 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2944 hci_emit_event(event, sizeof(event), 1); 2945 } 2946 break; 2947 #endif 2948 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2949 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2950 2951 #ifdef ENABLE_CLASSIC 2952 // determine usable ACL packet types based on host buffer size and supported features 2953 hci_stack->usable_packet_types_acl = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2954 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2955 // determine usable SCO packet types based on supported features 2956 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2957 &hci_stack->local_supported_features[0]); 2958 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2959 #endif 2960 // Classic/LE 2961 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2962 break; 2963 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2964 manufacturer = little_endian_read_16(packet, 10); 2965 // map Cypress & Infineon to Broadcom 2966 switch (manufacturer){ 2967 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2968 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2969 log_info("Treat Cypress/Infineon as Broadcom"); 2970 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2971 little_endian_store_16(packet, 10, manufacturer); 2972 break; 2973 default: 2974 break; 2975 } 2976 hci_stack->manufacturer = manufacturer; 2977 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2978 break; 2979 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2980 hci_store_local_supported_commands(packet); 2981 break; 2982 #ifdef ENABLE_CLASSIC 2983 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2984 if (status) return; 2985 hci_stack->synchronous_flow_control_enabled = 1; 2986 break; 2987 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2988 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2989 conn = hci_connection_for_handle(handle); 2990 if (conn != NULL) { 2991 uint8_t key_size = 0; 2992 if (status == 0){ 2993 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2994 log_info("Handle %04x key Size: %u", handle, key_size); 2995 } else { 2996 key_size = 1; 2997 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2998 } 2999 hci_handle_read_encryption_key_size_complete(conn, key_size); 3000 } 3001 break; 3002 // assert pairing complete event is emitted. 3003 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3004 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3005 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3006 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3007 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3008 // lookup connection by gap pairing addr 3009 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3010 if (conn == NULL) break; 3011 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3012 break; 3013 3014 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3015 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3016 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3017 uint8_t event[67]; 3018 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3019 event[1] = 65; 3020 (void)memset(&event[2], 0, 65); 3021 if (status == ERROR_CODE_SUCCESS){ 3022 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3023 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3024 event[2] = 3; 3025 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3026 } else { 3027 event[2] = 1; 3028 } 3029 } 3030 hci_emit_event(event, sizeof(event), 0); 3031 break; 3032 } 3033 3034 // note: only needed if user does not provide OOB data 3035 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3036 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3037 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3038 if (conn == NULL) break; 3039 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3040 break; 3041 #endif 3042 #endif 3043 #ifdef ENABLE_BLE 3044 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3045 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3046 // lookup CIG 3047 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3048 if (cig != NULL){ 3049 uint8_t i = 0; 3050 if (status == ERROR_CODE_SUCCESS){ 3051 // assign CIS handles to pre-allocated CIS 3052 btstack_linked_list_iterator_t it; 3053 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3054 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3055 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3056 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3057 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3058 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3059 iso_stream->cis_handle = cis_handle; 3060 cig->cis_con_handles[i] = cis_handle; 3061 i++; 3062 } 3063 } 3064 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3065 hci_emit_cig_created(cig, status); 3066 } else { 3067 hci_emit_cig_created(cig, status); 3068 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3069 } 3070 } 3071 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3072 break; 3073 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3074 if (status != ERROR_CODE_SUCCESS){ 3075 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3076 } 3077 break; 3078 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3079 if (status != ERROR_CODE_SUCCESS){ 3080 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3081 } 3082 break; 3083 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3084 // lookup BIG by state 3085 btstack_linked_list_iterator_t it; 3086 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3087 while (btstack_linked_list_iterator_has_next(&it)) { 3088 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3089 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3090 if (status == ERROR_CODE_SUCCESS){ 3091 big->state_vars.next_bis++; 3092 if (big->state_vars.next_bis == big->num_bis){ 3093 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3094 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3095 } else { 3096 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3097 } 3098 } else { 3099 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3100 big->state_vars.status = status; 3101 } 3102 return; 3103 } 3104 } 3105 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3106 while (btstack_linked_list_iterator_has_next(&it)) { 3107 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3108 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3109 if (status == ERROR_CODE_SUCCESS){ 3110 big_sync->state_vars.next_bis++; 3111 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3112 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3113 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3114 } else { 3115 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3116 } 3117 } else { 3118 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3119 big_sync->state_vars.status = status; 3120 } 3121 return; 3122 } 3123 } 3124 // Lookup CIS via active group operation 3125 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3126 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3127 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3128 3129 // lookup CIS by state 3130 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3131 while (btstack_linked_list_iterator_has_next(&it)){ 3132 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3133 handle = iso_stream->cis_handle; 3134 bool emit_cis_created = false; 3135 switch (iso_stream->state){ 3136 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3137 if (status != ERROR_CODE_SUCCESS){ 3138 emit_cis_created = true; 3139 break; 3140 } 3141 if (iso_stream->max_sdu_c_to_p > 0){ 3142 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3143 } else { 3144 emit_cis_created = true; 3145 } 3146 break; 3147 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3148 emit_cis_created = true; 3149 break; 3150 default: 3151 break; 3152 } 3153 if (emit_cis_created){ 3154 hci_cis_handle_created(iso_stream, status); 3155 } 3156 } 3157 } else { 3158 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3159 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3160 if (cig != NULL) { 3161 // emit cis created if all ISO Paths have been created 3162 // assume we are central 3163 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3164 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3165 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3166 // if outgoing has been setup, or incoming was setup but outgoing not required 3167 if ((cis_direction == 1) || (outgoing_needed == false)){ 3168 // lookup iso stream by cig/cis 3169 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3170 while (btstack_linked_list_iterator_has_next(&it)) { 3171 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3172 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3173 hci_cis_handle_created(iso_stream, status); 3174 } 3175 } 3176 } 3177 // next state 3178 cig->state_vars.next_cis++; 3179 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3180 } 3181 } 3182 } 3183 break; 3184 } 3185 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3186 // lookup BIG by state 3187 btstack_linked_list_iterator_t it; 3188 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3189 while (btstack_linked_list_iterator_has_next(&it)) { 3190 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3191 uint8_t big_handle = big_sync->big_handle; 3192 switch (big_sync->state){ 3193 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3194 btstack_linked_list_iterator_remove(&it); 3195 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3196 return; 3197 default: 3198 btstack_linked_list_iterator_remove(&it); 3199 hci_emit_big_sync_stopped(big_handle); 3200 return; 3201 } 3202 } 3203 break; 3204 } 3205 #endif 3206 #endif 3207 default: 3208 break; 3209 } 3210 } 3211 3212 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3213 UNUSED(size); 3214 3215 // get num cmd packets - limit to 1 to reduce complexity 3216 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3217 3218 // get opcode and command status 3219 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3220 3221 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3222 uint8_t status = hci_event_command_status_get_status(packet); 3223 #endif 3224 3225 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3226 bd_addr_type_t addr_type; 3227 bd_addr_t addr; 3228 #endif 3229 3230 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3231 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3232 #endif 3233 3234 switch (opcode){ 3235 #ifdef ENABLE_CLASSIC 3236 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3237 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3238 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3239 #endif 3240 #ifdef ENABLE_LE_CENTRAL 3241 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3242 #endif 3243 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3244 addr_type = hci_stack->outgoing_addr_type; 3245 memcpy(addr, hci_stack->outgoing_addr, 6); 3246 3247 // reset outgoing address info 3248 memset(hci_stack->outgoing_addr, 0, 6); 3249 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3250 3251 // on error 3252 if (status != ERROR_CODE_SUCCESS){ 3253 #ifdef ENABLE_LE_CENTRAL 3254 if (hci_is_le_connection_type(addr_type)){ 3255 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3256 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3257 } 3258 #endif 3259 // error => outgoing connection failed 3260 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3261 if (conn != NULL){ 3262 hci_handle_connection_failed(conn, status); 3263 } 3264 } 3265 break; 3266 #endif 3267 #ifdef ENABLE_CLASSIC 3268 case HCI_OPCODE_HCI_INQUIRY: 3269 if (status == ERROR_CODE_SUCCESS) { 3270 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3271 } else { 3272 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3273 } 3274 break; 3275 #endif 3276 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3277 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3278 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3279 if (status == ERROR_CODE_SUCCESS){ 3280 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3281 } else { 3282 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3283 } 3284 break; 3285 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3286 default: 3287 break; 3288 } 3289 } 3290 3291 #ifdef ENABLE_BLE 3292 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3293 gap_event[0] = HCI_EVENT_META_GAP; 3294 gap_event[1] = 36 - 2; 3295 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3296 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3297 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3298 memcpy(&gap_event[3], &hci_event[3], 11); 3299 memset(&gap_event[14], 0, 12); 3300 memcpy(&gap_event[26], &hci_event[14], 7); 3301 memset(&gap_event[33], 0xff, 3); 3302 break; 3303 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3304 memcpy(&gap_event[3], &hci_event[3], 30); 3305 memset(&gap_event[33], 0xff, 3); 3306 break; 3307 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3308 memcpy(&gap_event[3], &hci_event[3], 33); 3309 break; 3310 default: 3311 btstack_unreachable(); 3312 break; 3313 } 3314 } 3315 3316 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3317 bd_addr_t addr; 3318 bd_addr_type_t addr_type; 3319 hci_connection_t * conn; 3320 3321 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3322 uint8_t gap_event[36]; 3323 hci_create_gap_connection_complete_event(hci_event, gap_event); 3324 3325 // read fields 3326 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3327 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3328 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3329 3330 // Connection management 3331 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3332 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3333 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3334 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3335 3336 #ifdef ENABLE_LE_CENTRAL 3337 // handle error: error is reported only to the initiator -> outgoing connection 3338 if (status){ 3339 3340 // handle cancelled outgoing connection 3341 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3342 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3343 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3344 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3345 // reset state 3346 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3347 // get outgoing connection conn struct for direct connect 3348 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3349 conn = gap_get_outgoing_le_connection(); 3350 conn->state = SEND_CREATE_CONNECTION; 3351 } 3352 } 3353 3354 // free connection if cancelled by user (request == IDLE) 3355 if ((conn != NULL) && (hci_stack->le_connecting_request == LE_CONNECTING_IDLE)){ 3356 // remove entry 3357 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3358 btstack_memory_hci_connection_free( conn ); 3359 } 3360 return; 3361 } 3362 #endif 3363 3364 // on success, both hosts receive connection complete event 3365 if (role == HCI_ROLE_MASTER){ 3366 #ifdef ENABLE_LE_CENTRAL 3367 // if we're master, it was an outgoing connection 3368 // note: no hci_connection_t object exists yet for connect with whitelist 3369 3370 // if a identity addresses was used without enhanced connection complete event, 3371 // the connection complete event contains the current random address of the peer device. 3372 // This random address is needed in the case of a re-pairing 3373 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3374 conn = gap_get_outgoing_le_connection(); 3375 // if outgoing connection object is available, check if identity address was used. 3376 // if yes, track resolved random address and provide rpa 3377 // note: we don't update hci le subevent connection complete 3378 if (conn != NULL){ 3379 if (hci_is_le_identity_address_type(conn->address_type)){ 3380 memcpy(&gap_event[20], &gap_event[8], 6); 3381 gap_event[7] = conn->address_type; 3382 reverse_bd_addr(conn->address, &gap_event[8]); 3383 } 3384 } 3385 } 3386 3387 // we're done with it 3388 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3389 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3390 #endif 3391 } else { 3392 #ifdef ENABLE_LE_PERIPHERAL 3393 // if we're slave, it was an incoming connection, advertisements have stopped 3394 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3395 #endif 3396 } 3397 3398 // LE connections are auto-accepted, so just create a connection if there isn't one already 3399 if (!conn){ 3400 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3401 } 3402 3403 // no memory, sorry. 3404 if (!conn){ 3405 return; 3406 } 3407 3408 conn->state = OPEN; 3409 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3410 conn->le_connection_interval = conn_interval; 3411 3412 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3413 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3414 3415 #ifdef ENABLE_LE_PERIPHERAL 3416 if (role == HCI_ROLE_SLAVE){ 3417 hci_update_advertisements_enabled_for_current_roles(); 3418 } 3419 #endif 3420 3421 // init unenhanced att bearer mtu 3422 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3423 conn->att_connection.mtu_exchanged = false; 3424 3425 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3426 3427 // restart timer 3428 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3429 // btstack_run_loop_add_timer(&conn->timeout); 3430 3431 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3432 3433 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3434 hci_emit_event(gap_event, sizeof(gap_event), 1); 3435 3436 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3437 hci_emit_nr_connections_changed(); 3438 } 3439 #endif 3440 3441 #ifdef ENABLE_CLASSIC 3442 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){ 3443 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3444 // LEVEL_4 is tested by l2cap 3445 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3446 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3447 if (level >= LEVEL_3){ 3448 // MITM not possible without keyboard or display 3449 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3450 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3451 3452 // MITM possible if one side has keyboard and the other has keyboard or display 3453 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3454 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3455 3456 // MITM not possible if one side has only display and other side has no keyboard 3457 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3458 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3459 } 3460 // LEVEL 2 requires SSP, which is a given 3461 return true; 3462 } 3463 3464 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3465 // get requested security level 3466 gap_security_level_t requested_security_level = conn->requested_security_level; 3467 if (hci_stack->gap_secure_connections_only_mode){ 3468 requested_security_level = LEVEL_4; 3469 } 3470 3471 // assess security: LEVEL 4 requires SC 3472 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3473 if ((requested_security_level == LEVEL_4) && 3474 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3475 !hci_remote_sc_enabled(conn)){ 3476 log_info("Level 4 required, but SC not supported -> abort"); 3477 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3478 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3479 return; 3480 } 3481 3482 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3483 // - GAP/MOD/NBON/BV-02-C 3484 // - GAP/DM/NBON/BV-01-C 3485 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3486 switch (conn->io_cap_response_auth_req){ 3487 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3488 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3489 if (hci_stack->bondable == false){ 3490 log_info("Dedicated vs. non-bondable -> abort"); 3491 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3492 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3493 return; 3494 } 3495 default: 3496 break; 3497 } 3498 } 3499 3500 // assess security based on io capabilities 3501 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3502 // responder: fully validate io caps of both sides as well as OOB data 3503 bool security_possible = false; 3504 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3505 3506 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3507 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3508 // so we merge the OOB data availability 3509 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3510 if (conn->classic_oob_c_192 != NULL){ 3511 have_oob_data |= 1; 3512 } 3513 if (conn->classic_oob_c_256 != NULL){ 3514 have_oob_data |= 2; 3515 } 3516 // for up to Level 3, either P-192 as well as P-256 will do 3517 // 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 3518 // if remote does not SC, we should not receive P-256 data either 3519 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3520 security_possible = true; 3521 } 3522 // for Level 4, P-256 is needed 3523 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3524 security_possible = true; 3525 } 3526 #endif 3527 3528 if (security_possible == false){ 3529 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3530 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3531 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3532 return; 3533 } 3534 } else { 3535 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3536 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3537 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3538 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3539 log_info("Level 3+ required, but no input/output -> abort"); 3540 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3541 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3542 return; 3543 } 3544 #endif 3545 #endif 3546 } 3547 3548 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3549 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3550 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3551 } else { 3552 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3553 } 3554 #endif 3555 } 3556 3557 #endif 3558 3559 static void event_handler(uint8_t *packet, uint16_t size){ 3560 3561 uint16_t event_length = packet[1]; 3562 3563 // assert packet is complete 3564 if (size != (event_length + 2u)){ 3565 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3566 return; 3567 } 3568 3569 hci_con_handle_t handle; 3570 hci_connection_t * conn; 3571 int i; 3572 3573 #ifdef ENABLE_CLASSIC 3574 hci_link_type_t link_type; 3575 bd_addr_t addr; 3576 bd_addr_type_t addr_type; 3577 #endif 3578 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3579 hci_iso_stream_t * iso_stream; 3580 le_audio_big_t * big; 3581 le_audio_big_sync_t * big_sync; 3582 #endif 3583 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3584 btstack_linked_list_iterator_t it; 3585 #endif 3586 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3587 uint8_t advertising_handle; 3588 #endif 3589 3590 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3591 3592 switch (hci_event_packet_get_type(packet)) { 3593 3594 case HCI_EVENT_COMMAND_COMPLETE: 3595 handle_command_complete_event(packet, size); 3596 break; 3597 3598 case HCI_EVENT_COMMAND_STATUS: 3599 handle_command_status_event(packet, size); 3600 break; 3601 3602 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3603 if (size < 3) return; 3604 uint16_t num_handles = packet[2]; 3605 if (size != (3u + num_handles * 4u)) return; 3606 #ifdef ENABLE_CLASSIC 3607 bool notify_sco = false; 3608 #endif 3609 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3610 bool notify_iso = false; 3611 #endif 3612 uint16_t offset = 3; 3613 for (i=0; i<num_handles;i++){ 3614 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3615 offset += 2u; 3616 uint16_t num_packets = little_endian_read_16(packet, offset); 3617 offset += 2u; 3618 3619 conn = hci_connection_for_handle(handle); 3620 if (conn != NULL) { 3621 3622 if (conn->num_packets_sent >= num_packets) { 3623 conn->num_packets_sent -= num_packets; 3624 } else { 3625 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3626 conn->num_packets_sent = 0; 3627 } 3628 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3629 #ifdef ENABLE_CLASSIC 3630 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3631 notify_sco = true; 3632 } 3633 #endif 3634 } 3635 3636 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3637 hci_controller_dump_packets(); 3638 #endif 3639 3640 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3641 if (conn == NULL){ 3642 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3643 if (iso_stream != NULL){ 3644 if (iso_stream->num_packets_sent >= num_packets) { 3645 iso_stream->num_packets_sent -= num_packets; 3646 } else { 3647 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3648 iso_stream->num_packets_sent = 0; 3649 } 3650 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3651 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3652 if (big != NULL){ 3653 big->num_completed_timestamp_current_valid = true; 3654 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3655 } 3656 } 3657 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3658 num_packets, handle, iso_stream->num_packets_sent); 3659 notify_iso = true; 3660 } 3661 } 3662 #endif 3663 } 3664 3665 #ifdef ENABLE_CLASSIC 3666 if (notify_sco){ 3667 hci_notify_if_sco_can_send_now(); 3668 } 3669 #endif 3670 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3671 if (notify_iso){ 3672 hci_iso_notify_can_send_now(); 3673 } 3674 #endif 3675 break; 3676 } 3677 3678 #ifdef ENABLE_CLASSIC 3679 case HCI_EVENT_FLUSH_OCCURRED: 3680 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3681 handle = hci_event_flush_occurred_get_handle(packet); 3682 conn = hci_connection_for_handle(handle); 3683 if (conn) { 3684 log_info("Flush occurred, disconnect 0x%04x", handle); 3685 conn->state = SEND_DISCONNECT; 3686 } 3687 break; 3688 3689 case HCI_EVENT_INQUIRY_COMPLETE: 3690 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3691 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3692 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3693 hci_emit_event(event, sizeof(event), 1); 3694 } 3695 break; 3696 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3697 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3698 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3699 } 3700 break; 3701 case HCI_EVENT_CONNECTION_REQUEST: 3702 reverse_bd_addr(&packet[2], addr); 3703 link_type = (hci_link_type_t) packet[11]; 3704 3705 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3706 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3707 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3708 bd_addr_copy(hci_stack->decline_addr, addr); 3709 break; 3710 } 3711 3712 if (hci_stack->gap_classic_accept_callback != NULL){ 3713 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3714 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3715 bd_addr_copy(hci_stack->decline_addr, addr); 3716 break; 3717 } 3718 } 3719 3720 // TODO: eval COD 8-10 3721 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3722 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3723 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3724 if (!conn) { 3725 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3726 } 3727 if (!conn) { 3728 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3729 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3730 bd_addr_copy(hci_stack->decline_addr, addr); 3731 hci_run(); 3732 // avoid event to higher layer 3733 return; 3734 } 3735 conn->state = RECEIVED_CONNECTION_REQUEST; 3736 // store info about eSCO 3737 if (link_type == HCI_LINK_TYPE_ESCO){ 3738 conn->remote_supported_features[0] |= 1; 3739 } 3740 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3741 if (addr_type == BD_ADDR_TYPE_SCO){ 3742 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3743 // ACL exists unless fuzzing 3744 if (acl_conn != NULL) { 3745 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3746 } 3747 } 3748 hci_run(); 3749 break; 3750 3751 case HCI_EVENT_CONNECTION_COMPLETE: 3752 // Connection management 3753 reverse_bd_addr(&packet[5], addr); 3754 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3755 addr_type = BD_ADDR_TYPE_ACL; 3756 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3757 if (conn) { 3758 switch (conn->state){ 3759 // expected states 3760 case ACCEPTED_CONNECTION_REQUEST: 3761 case SENT_CREATE_CONNECTION: 3762 break; 3763 // unexpected state -> ignore 3764 default: 3765 // don't forward event to app 3766 return; 3767 } 3768 if (!packet[2]){ 3769 conn->state = OPEN; 3770 conn->con_handle = little_endian_read_16(packet, 3); 3771 3772 // trigger write supervision timeout if we're master 3773 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3774 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3775 } 3776 3777 // trigger write automatic flush timeout 3778 if (hci_stack->automatic_flush_timeout != 0){ 3779 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3780 } 3781 3782 // restart timer 3783 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3784 btstack_run_loop_add_timer(&conn->timeout); 3785 3786 // trigger remote features for dedicated bonding 3787 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3788 hci_trigger_remote_features_for_connection(conn); 3789 } 3790 3791 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3792 3793 hci_emit_nr_connections_changed(); 3794 } else { 3795 // connection failed 3796 hci_handle_connection_failed(conn, packet[2]); 3797 } 3798 } 3799 break; 3800 3801 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3802 reverse_bd_addr(&packet[5], addr); 3803 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3804 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3805 3806 // SCO exists unless fuzzer 3807 if (conn == NULL) break; 3808 3809 if (packet[2] != ERROR_CODE_SUCCESS){ 3810 // connection failed, remove entry 3811 hci_handle_connection_failed(conn, packet[2]); 3812 break; 3813 } 3814 3815 conn->state = OPEN; 3816 conn->con_handle = little_endian_read_16(packet, 3); 3817 3818 // update sco payload length for eSCO connections 3819 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3820 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3821 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3822 } 3823 3824 #ifdef ENABLE_SCO_OVER_HCI 3825 // update SCO 3826 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3827 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3828 } 3829 // trigger can send now 3830 if (hci_have_usb_transport()){ 3831 hci_stack->sco_can_send_now = true; 3832 } 3833 3834 // setup implict sco flow control 3835 conn->sco_tx_ready = 0; 3836 conn->sco_tx_active = 0; 3837 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3838 3839 #endif 3840 #ifdef HAVE_SCO_TRANSPORT 3841 // configure sco transport 3842 if (hci_stack->sco_transport != NULL){ 3843 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3844 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3845 } 3846 #endif 3847 break; 3848 3849 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3850 handle = little_endian_read_16(packet, 3); 3851 conn = hci_connection_for_handle(handle); 3852 if (!conn) break; 3853 if (!packet[2]){ 3854 const uint8_t * features = &packet[5]; 3855 hci_handle_remote_features_page_0(conn, features); 3856 3857 // read extended features if possible 3858 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3859 && ((conn->remote_supported_features[0] & 2) != 0)) { 3860 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3861 break; 3862 } 3863 } 3864 hci_handle_remote_features_received(conn); 3865 break; 3866 3867 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3868 handle = little_endian_read_16(packet, 3); 3869 conn = hci_connection_for_handle(handle); 3870 if (!conn) break; 3871 // status = ok, page = 1 3872 if (!packet[2]) { 3873 uint8_t page_number = packet[5]; 3874 uint8_t maximum_page_number = packet[6]; 3875 const uint8_t * features = &packet[7]; 3876 bool done = false; 3877 switch (page_number){ 3878 case 1: 3879 hci_handle_remote_features_page_1(conn, features); 3880 if (maximum_page_number >= 2){ 3881 // get Secure Connections (Controller) from Page 2 if available 3882 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3883 } else { 3884 // otherwise, assume SC (Controller) == SC (Host) 3885 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3886 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3887 } 3888 done = true; 3889 } 3890 break; 3891 case 2: 3892 hci_handle_remote_features_page_2(conn, features); 3893 done = true; 3894 break; 3895 default: 3896 break; 3897 } 3898 if (!done) break; 3899 } 3900 hci_handle_remote_features_received(conn); 3901 break; 3902 3903 case HCI_EVENT_LINK_KEY_REQUEST: 3904 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3905 hci_event_link_key_request_get_bd_addr(packet, addr); 3906 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3907 if (!conn) break; 3908 3909 // lookup link key in db if not cached 3910 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3911 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3912 } 3913 3914 // response sent by hci_run() 3915 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3916 #endif 3917 break; 3918 3919 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3920 hci_event_link_key_request_get_bd_addr(packet, addr); 3921 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3922 if (!conn) break; 3923 3924 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3925 3926 // CVE-2020-26555: ignore NULL link key 3927 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3928 if (btstack_is_null(&packet[8], 16)) break; 3929 3930 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3931 // Change Connection Encryption keeps link key type 3932 if (link_key_type != CHANGED_COMBINATION_KEY){ 3933 conn->link_key_type = link_key_type; 3934 } 3935 3936 // cache link key. link keys stored in little-endian format for legacy reasons 3937 memcpy(&conn->link_key, &packet[8], 16); 3938 3939 // only store link key: 3940 // - if bondable enabled 3941 if (hci_stack->bondable == false) break; 3942 // - if security level sufficient 3943 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3944 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3945 break; 3946 } 3947 3948 case HCI_EVENT_PIN_CODE_REQUEST: 3949 hci_event_pin_code_request_get_bd_addr(packet, addr); 3950 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3951 if (!conn) break; 3952 3953 hci_pairing_started(conn, false); 3954 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3955 if (!hci_stack->bondable ){ 3956 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3957 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3958 hci_run(); 3959 return; 3960 } 3961 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3962 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3963 log_info("Level 4 required, but SC not supported -> abort"); 3964 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3965 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3966 hci_run(); 3967 return; 3968 } 3969 break; 3970 3971 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3972 hci_event_io_capability_response_get_bd_addr(packet, addr); 3973 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3974 if (!conn) break; 3975 3976 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3977 hci_pairing_started(conn, true); 3978 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3979 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3980 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3981 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3982 #endif 3983 break; 3984 3985 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3986 hci_event_io_capability_response_get_bd_addr(packet, addr); 3987 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3988 if (!conn) break; 3989 3990 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3991 hci_connection_timestamp(conn); 3992 hci_pairing_started(conn, true); 3993 break; 3994 3995 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3996 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3997 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3998 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3999 if (!conn) break; 4000 4001 hci_connection_timestamp(conn); 4002 4003 hci_pairing_started(conn, true); 4004 4005 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4006 break; 4007 #endif 4008 4009 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4010 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4011 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4012 if (!conn) break; 4013 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4014 if (hci_stack->ssp_auto_accept){ 4015 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4016 }; 4017 } else { 4018 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4019 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4020 // don't forward event to app 4021 hci_run(); 4022 return; 4023 } 4024 break; 4025 4026 case HCI_EVENT_USER_PASSKEY_REQUEST: 4027 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4028 if (hci_stack->ssp_auto_accept){ 4029 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4030 }; 4031 break; 4032 4033 case HCI_EVENT_MODE_CHANGE: 4034 handle = hci_event_mode_change_get_handle(packet); 4035 conn = hci_connection_for_handle(handle); 4036 if (!conn) break; 4037 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4038 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4039 break; 4040 #endif 4041 4042 case HCI_EVENT_ENCRYPTION_CHANGE: 4043 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4044 handle = hci_event_encryption_change_get_connection_handle(packet); 4045 conn = hci_connection_for_handle(handle); 4046 if (!conn) break; 4047 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4048 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4049 if (encryption_enabled){ 4050 if (hci_is_le_connection(conn)){ 4051 // For LE, we accept connection as encrypted 4052 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4053 } 4054 #ifdef ENABLE_CLASSIC 4055 else { 4056 4057 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4058 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4059 bool connected_uses_aes_ccm = encryption_enabled == 2; 4060 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4061 #ifdef ENABLE_TESTING_SUPPORT 4062 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4063 // - GAP/SEC/SEM/BI-31-C 4064 // - GAP/SEC/SEM/BI-32-C 4065 // - GAP/SEC/SEM/BI-33-C 4066 4067 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4068 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4069 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4070 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4071 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4072 } 4073 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4074 conn->link_key_type, new_link_key_type); 4075 conn->link_key_type = new_link_key_type; 4076 #else 4077 log_info("SC during pairing, but only E0 now -> abort"); 4078 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4079 break; 4080 #endif 4081 } 4082 4083 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4084 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4085 if (connected_uses_aes_ccm){ 4086 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4087 } 4088 #else 4089 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4090 // with encryption key size > hci_stack->gap_required_encyrption_key_size 4091 // for all operations that require any security. See BIAS attacks. 4092 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4093 #endif 4094 // validate encryption key size 4095 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4096 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4097 // already got encryption key size 4098 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4099 } else { 4100 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4101 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4102 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4103 } else { 4104 // if not, pretend everything is perfect 4105 hci_handle_read_encryption_key_size_complete(conn, 16); 4106 } 4107 } 4108 } 4109 #endif 4110 } else { 4111 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4112 } 4113 } else { 4114 #ifdef ENABLE_CLASSIC 4115 if (!hci_is_le_connection(conn)){ 4116 uint8_t status = hci_event_encryption_change_get_status(packet); 4117 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4118 conn->bonding_flags &= ~BONDING_DEDICATED; 4119 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4120 conn->bonding_status = status; 4121 } 4122 // trigger security update -> level 0 4123 hci_handle_mutual_authentication_completed(conn); 4124 } 4125 #endif 4126 } 4127 4128 break; 4129 4130 #ifdef ENABLE_CLASSIC 4131 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4132 handle = hci_event_authentication_complete_get_connection_handle(packet); 4133 conn = hci_connection_for_handle(handle); 4134 if (!conn) break; 4135 4136 // clear authentication active flag 4137 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4138 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4139 4140 // authenticated only if auth status == 0 4141 if (hci_event_authentication_complete_get_status(packet) == 0){ 4142 // authenticated 4143 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4144 4145 // If not already encrypted, start encryption 4146 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4147 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4148 break; 4149 } 4150 } 4151 4152 // emit updated security level (will be 0 if not authenticated) 4153 hci_handle_mutual_authentication_completed(conn); 4154 break; 4155 4156 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4157 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4158 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4159 if (!conn) break; 4160 4161 // treat successfully paired connection as authenticated 4162 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4163 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4164 } 4165 4166 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4167 break; 4168 #endif 4169 4170 // HCI_EVENT_DISCONNECTION_COMPLETE 4171 // has been split, to first notify stack before shutting connection down 4172 // see end of function, too. 4173 case HCI_EVENT_DISCONNECTION_COMPLETE: 4174 if (packet[2]) break; // status != 0 4175 handle = little_endian_read_16(packet, 3); 4176 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4177 if (hci_stack->acl_fragmentation_total_size > 0u) { 4178 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4179 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4180 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4181 hci_stack->acl_fragmentation_total_size = 0; 4182 hci_stack->acl_fragmentation_pos = 0; 4183 if (release_buffer){ 4184 hci_release_packet_buffer(); 4185 } 4186 } 4187 } 4188 4189 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4190 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4191 if (hci_stack->iso_fragmentation_total_size > 0u) { 4192 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4193 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4194 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4195 hci_stack->iso_fragmentation_total_size = 0; 4196 hci_stack->iso_fragmentation_pos = 0; 4197 if (release_buffer){ 4198 hci_release_packet_buffer(); 4199 } 4200 } 4201 } 4202 4203 // finalize iso stream for CIS handle 4204 iso_stream = hci_iso_stream_for_con_handle(handle); 4205 if (iso_stream != NULL){ 4206 hci_iso_stream_finalize(iso_stream); 4207 break; 4208 } 4209 4210 // finalize iso stream(s) for ACL handle 4211 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4212 while (btstack_linked_list_iterator_has_next(&it)){ 4213 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4214 if (iso_stream->acl_handle == handle ) { 4215 hci_iso_stream_finalize(iso_stream); 4216 } 4217 } 4218 #endif 4219 4220 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4221 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4222 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4223 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4224 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4225 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4226 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4227 hci_stack->num_cmd_packets = 1; 4228 } 4229 #endif 4230 4231 conn = hci_connection_for_handle(handle); 4232 if (!conn) break; 4233 #ifdef ENABLE_CLASSIC 4234 // pairing failed if it was ongoing 4235 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4236 #endif 4237 4238 // emit dedicatd bonding event 4239 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4240 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4241 } 4242 4243 // mark connection for shutdown, stop timers, reset state 4244 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4245 hci_connection_stop_timer(conn); 4246 hci_connection_init(conn); 4247 4248 #ifdef ENABLE_BLE 4249 #ifdef ENABLE_LE_PERIPHERAL 4250 // re-enable advertisements for le connections if active 4251 if (hci_is_le_connection(conn)){ 4252 hci_update_advertisements_enabled_for_current_roles(); 4253 } 4254 #endif 4255 #endif 4256 break; 4257 4258 case HCI_EVENT_HARDWARE_ERROR: 4259 log_error("Hardware Error: 0x%02x", packet[2]); 4260 if (hci_stack->hardware_error_callback){ 4261 (*hci_stack->hardware_error_callback)(packet[2]); 4262 } else { 4263 // if no special requests, just reboot stack 4264 hci_power_control_off(); 4265 hci_power_control_on(); 4266 } 4267 break; 4268 4269 #ifdef ENABLE_CLASSIC 4270 case HCI_EVENT_ROLE_CHANGE: 4271 if (packet[2]) break; // status != 0 4272 reverse_bd_addr(&packet[3], addr); 4273 addr_type = BD_ADDR_TYPE_ACL; 4274 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4275 if (!conn) break; 4276 conn->role = (hci_role_t) packet[9]; 4277 break; 4278 #endif 4279 4280 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4281 // release packet buffer only for asynchronous transport and if there are not further fragments 4282 if (hci_transport_synchronous()) { 4283 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4284 return; // instead of break: to avoid re-entering hci_run() 4285 } 4286 hci_stack->acl_fragmentation_tx_active = 0; 4287 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4288 hci_stack->iso_fragmentation_tx_active = 0; 4289 if (hci_stack->iso_fragmentation_total_size) break; 4290 #endif 4291 if (hci_stack->acl_fragmentation_total_size) break; 4292 4293 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4294 btstack_assert(hci_stack->hci_packet_buffer_reserved); 4295 hci_stack->hci_packet_buffer_reserved = false; 4296 4297 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4298 hci_iso_notify_can_send_now(); 4299 #endif 4300 // L2CAP receives this event via the hci_emit_event below 4301 4302 #ifdef ENABLE_CLASSIC 4303 // For SCO, we do the can_send_now_check here 4304 hci_notify_if_sco_can_send_now(); 4305 #endif 4306 break; 4307 4308 #ifdef ENABLE_CLASSIC 4309 case HCI_EVENT_SCO_CAN_SEND_NOW: 4310 // For SCO, we do the can_send_now_check here 4311 hci_stack->sco_can_send_now = true; 4312 hci_notify_if_sco_can_send_now(); 4313 return; 4314 4315 // explode inquriy results for easier consumption 4316 case HCI_EVENT_INQUIRY_RESULT: 4317 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4318 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4319 gap_inquiry_explode(packet, size); 4320 break; 4321 #endif 4322 4323 #ifdef ENABLE_BLE 4324 case HCI_EVENT_LE_META: 4325 switch (packet[2]){ 4326 #ifdef ENABLE_LE_CENTRAL 4327 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4328 if (!hci_stack->le_scanning_enabled) break; 4329 le_handle_advertisement_report(packet, size); 4330 break; 4331 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4332 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4333 if (!hci_stack->le_scanning_enabled) break; 4334 le_handle_extended_advertisement_report(packet, size); 4335 break; 4336 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4337 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4338 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4339 break; 4340 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4341 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4342 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4343 while (btstack_linked_list_iterator_has_next(&it)) { 4344 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4345 if (advertising_set->advertising_handle == advertising_handle){ 4346 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4347 } 4348 } 4349 break; 4350 #endif 4351 #endif 4352 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4353 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4354 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4355 hci_handle_le_connection_complete_event(packet); 4356 break; 4357 4358 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4359 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4360 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4361 conn = hci_connection_for_handle(handle); 4362 if (!conn) break; 4363 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4364 break; 4365 4366 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4367 // connection 4368 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4369 conn = hci_connection_for_handle(handle); 4370 if (conn) { 4371 // read arguments 4372 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4373 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4374 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4375 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4376 4377 // validate against current connection parameter range 4378 le_connection_parameter_range_t existing_range; 4379 gap_get_connection_parameter_range(&existing_range); 4380 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4381 if (update_parameter){ 4382 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4383 conn->le_conn_interval_min = le_conn_interval_min; 4384 conn->le_conn_interval_max = le_conn_interval_max; 4385 conn->le_conn_latency = le_conn_latency; 4386 conn->le_supervision_timeout = le_supervision_timeout; 4387 } else { 4388 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4389 } 4390 } 4391 break; 4392 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4393 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4394 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4395 conn = hci_connection_for_handle(handle); 4396 if (conn) { 4397 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4398 } 4399 break; 4400 #endif 4401 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4402 case HCI_SUBEVENT_LE_CIS_REQUEST: 4403 // incoming CIS request, allocate iso stream object and cache metadata 4404 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4405 hci_subevent_le_cis_request_get_cig_id(packet), 4406 hci_subevent_le_cis_request_get_cis_id(packet)); 4407 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4408 if (iso_stream != NULL){ 4409 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4410 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4411 } 4412 break; 4413 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4414 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4415 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4416 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4417 iso_stream = hci_iso_stream_for_con_handle(handle); 4418 btstack_assert(iso_stream != NULL); 4419 // track connection info 4420 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4421 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4422 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4423 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4424 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4425 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4426 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4427 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4428 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4429 // CIS Accept by Peripheral 4430 if (status == ERROR_CODE_SUCCESS){ 4431 if (iso_stream->max_sdu_p_to_c > 0){ 4432 // we're peripheral and we will send data 4433 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4434 } else { 4435 // we're peripheral and we will only receive data 4436 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4437 } 4438 } else { 4439 hci_cis_handle_created(iso_stream, status); 4440 } 4441 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4442 } else { 4443 // CIG Setup by Central 4444 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4445 btstack_assert(cig != NULL); 4446 // update iso stream state 4447 if (status == ERROR_CODE_SUCCESS){ 4448 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4449 } else { 4450 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4451 } 4452 // update cig state 4453 uint8_t i; 4454 for (i=0;i<cig->num_cis;i++){ 4455 if (cig->cis_con_handles[i] == handle){ 4456 cig->cis_setup_active[i] = false; 4457 if (status == ERROR_CODE_SUCCESS){ 4458 cig->cis_established[i] = true; 4459 } else { 4460 hci_cis_handle_created(iso_stream, status); 4461 } 4462 } 4463 } 4464 4465 // trigger iso path setup if complete 4466 bool cis_setup_active = false; 4467 for (i=0;i<cig->num_cis;i++){ 4468 cis_setup_active |= cig->cis_setup_active[i]; 4469 } 4470 if (cis_setup_active == false){ 4471 cig->state_vars.next_cis = 0; 4472 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4473 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4474 } 4475 } 4476 } 4477 break; 4478 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4479 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4480 big = hci_big_for_handle(packet[4]); 4481 if (big != NULL){ 4482 uint8_t status = packet[3]; 4483 if (status == ERROR_CODE_SUCCESS){ 4484 // store bis_con_handles and trigger iso path setup 4485 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4486 uint8_t i; 4487 for (i=0;i<num_bis;i++){ 4488 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4489 big->bis_con_handles[i] = bis_handle; 4490 // assign bis handle 4491 btstack_linked_list_iterator_t it; 4492 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4493 while (btstack_linked_list_iterator_has_next(&it)){ 4494 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4495 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4496 (iso_stream->group_id == big->big_handle)){ 4497 iso_stream->cis_handle = bis_handle; 4498 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4499 break; 4500 } 4501 } 4502 } 4503 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4504 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4505 big->state_vars.next_bis = 0; 4506 } 4507 } else { 4508 // create BIG failed or has been stopped by us 4509 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4510 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4511 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4512 hci_emit_big_created(big, status); 4513 } else { 4514 hci_emit_big_terminated(big); 4515 } 4516 } 4517 } 4518 break; 4519 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4520 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4521 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4522 if (big != NULL){ 4523 // finalize associated ISO streams 4524 btstack_linked_list_iterator_t it; 4525 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4526 while (btstack_linked_list_iterator_has_next(&it)){ 4527 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4528 if (iso_stream->group_id == big->big_handle){ 4529 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4530 btstack_linked_list_iterator_remove(&it); 4531 btstack_memory_hci_iso_stream_free(iso_stream); 4532 } 4533 } 4534 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4535 switch (big->state){ 4536 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4537 hci_emit_big_created(big, big->state_vars.status); 4538 break; 4539 default: 4540 hci_emit_big_terminated(big); 4541 break; 4542 } 4543 } 4544 break; 4545 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4546 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4547 big_sync = hci_big_sync_for_handle(packet[4]); 4548 if (big_sync != NULL){ 4549 uint8_t status = packet[3]; 4550 uint8_t big_handle = packet[4]; 4551 if (status == ERROR_CODE_SUCCESS){ 4552 // store bis_con_handles and trigger iso path setup 4553 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4554 uint8_t i; 4555 for (i=0;i<num_bis;i++){ 4556 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4557 big_sync->bis_con_handles[i] = bis_handle; 4558 // setup iso_stream_t 4559 btstack_linked_list_iterator_t it; 4560 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4561 while (btstack_linked_list_iterator_has_next(&it)){ 4562 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4563 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4564 (iso_stream->group_id == big_sync->big_handle)){ 4565 iso_stream->cis_handle = bis_handle; 4566 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4567 break; 4568 } 4569 } 4570 } 4571 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4572 // trigger iso path setup 4573 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4574 big_sync->state_vars.next_bis = 0; 4575 } 4576 } else { 4577 // create BIG Sync failed or has been stopped by us 4578 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4579 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4580 hci_emit_big_sync_created(big_sync, status); 4581 } else { 4582 hci_emit_big_sync_stopped(big_handle); 4583 } 4584 } 4585 } 4586 break; 4587 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4588 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4589 big_sync = hci_big_sync_for_handle(packet[4]); 4590 if (big_sync != NULL){ 4591 uint8_t big_handle = packet[4]; 4592 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4593 hci_emit_big_sync_stopped(big_handle); 4594 } 4595 break; 4596 #endif 4597 default: 4598 break; 4599 } 4600 break; 4601 #endif 4602 case HCI_EVENT_VENDOR_SPECIFIC: 4603 // Vendor specific commands often create vendor specific event instead of num completed packets 4604 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4605 switch (hci_stack->manufacturer){ 4606 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4607 hci_stack->num_cmd_packets = 1; 4608 break; 4609 default: 4610 break; 4611 } 4612 break; 4613 default: 4614 break; 4615 } 4616 4617 handle_event_for_current_stack_state(packet, size); 4618 4619 // notify upper stack 4620 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4621 4622 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4623 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4624 handle = little_endian_read_16(packet, 3); 4625 hci_connection_t * aConn = hci_connection_for_handle(handle); 4626 // discard connection if app did not trigger a reconnect in the event handler 4627 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4628 hci_shutdown_connection(aConn); 4629 } 4630 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4631 hci_controller_dump_packets(); 4632 #endif 4633 } 4634 4635 // execute main loop 4636 hci_run(); 4637 } 4638 4639 #ifdef ENABLE_CLASSIC 4640 4641 static void sco_handler(uint8_t * packet, uint16_t size){ 4642 // lookup connection struct 4643 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4644 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4645 if (!conn) return; 4646 4647 #ifdef ENABLE_SCO_OVER_HCI 4648 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4649 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4650 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4651 packet[2] = 0x3c; 4652 memmove(&packet[3], &packet[23], 63); 4653 size = 63; 4654 } 4655 } 4656 4657 if (hci_have_usb_transport()){ 4658 // Nothing to do 4659 } else { 4660 // 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); 4661 if (hci_stack->synchronous_flow_control_enabled == 0){ 4662 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4663 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4664 if (conn->sco_tx_active == 0){ 4665 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4666 conn->sco_tx_active = 1; 4667 conn->sco_tx_ready = max_sco_packets; 4668 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4669 hci_notify_if_sco_can_send_now(); 4670 } 4671 } else { 4672 if (conn->sco_tx_ready < max_sco_packets){ 4673 conn->sco_tx_ready++; 4674 } 4675 hci_notify_if_sco_can_send_now(); 4676 } 4677 } 4678 } 4679 #endif 4680 4681 // deliver to app 4682 if (hci_stack->sco_packet_handler) { 4683 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4684 } 4685 4686 #ifdef HAVE_SCO_TRANSPORT 4687 // We can send one packet for each received packet 4688 conn->sco_tx_ready++; 4689 hci_notify_if_sco_can_send_now(); 4690 #endif 4691 4692 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4693 conn->num_packets_completed++; 4694 hci_stack->host_completed_packets = 1; 4695 hci_run(); 4696 #endif 4697 } 4698 #endif 4699 4700 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4701 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4702 // propagate ISO packets received as ACL 4703 hci_iso_stream_t * iso_stream = NULL; 4704 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4705 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4706 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4707 if (iso_stream != NULL){ 4708 packet_type = HCI_ISO_DATA_PACKET; 4709 } 4710 } 4711 #endif 4712 4713 hci_dump_packet(packet_type, 1, packet, size); 4714 switch (packet_type) { 4715 case HCI_EVENT_PACKET: 4716 event_handler(packet, size); 4717 break; 4718 case HCI_ACL_DATA_PACKET: 4719 acl_handler(packet, size); 4720 break; 4721 #ifdef ENABLE_CLASSIC 4722 case HCI_SCO_DATA_PACKET: 4723 sco_handler(packet, size); 4724 break; 4725 #endif 4726 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4727 case HCI_ISO_DATA_PACKET: 4728 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4729 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4730 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4731 } 4732 hci_iso_packet_handler(iso_stream, packet, size); 4733 break; 4734 #endif 4735 default: 4736 break; 4737 } 4738 } 4739 4740 /** 4741 * @brief Add event packet handler. 4742 */ 4743 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4744 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4745 } 4746 4747 /** 4748 * @brief Remove event packet handler. 4749 */ 4750 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4751 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4752 } 4753 4754 /** Register HCI packet handlers */ 4755 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4756 hci_stack->acl_packet_handler = handler; 4757 } 4758 4759 #ifdef ENABLE_CLASSIC 4760 /** 4761 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4762 */ 4763 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4764 hci_stack->sco_packet_handler = handler; 4765 } 4766 #endif 4767 4768 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4769 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4770 hci_stack->iso_packet_handler = handler; 4771 } 4772 #endif 4773 4774 static void hci_state_reset(void){ 4775 // no connections yet 4776 hci_stack->connections = NULL; 4777 4778 // keep discoverable/connectable as this has been requested by the client(s) 4779 // hci_stack->discoverable = 0; 4780 // hci_stack->connectable = 0; 4781 // hci_stack->bondable = 1; 4782 // hci_stack->own_addr_type = 0; 4783 4784 // buffer is free 4785 hci_stack->hci_packet_buffer_reserved = false; 4786 4787 // no pending cmds 4788 hci_stack->decline_reason = 0; 4789 4790 hci_stack->secure_connections_active = false; 4791 4792 #ifdef ENABLE_CLASSIC 4793 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4794 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4795 4796 hci_stack->gap_tasks_classic = 4797 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4798 GAP_TASK_SET_CLASS_OF_DEVICE | 4799 GAP_TASK_SET_LOCAL_NAME | 4800 GAP_TASK_SET_EIR_DATA | 4801 GAP_TASK_WRITE_SCAN_ENABLE | 4802 GAP_TASK_WRITE_PAGE_TIMEOUT; 4803 #endif 4804 4805 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4806 hci_stack->classic_read_local_oob_data = false; 4807 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4808 #endif 4809 4810 // LE 4811 #ifdef ENABLE_BLE 4812 memset(hci_stack->le_random_address, 0, 6); 4813 hci_stack->le_random_address_set = 0; 4814 #endif 4815 #ifdef ENABLE_LE_CENTRAL 4816 hci_stack->le_scanning_active = false; 4817 hci_stack->le_scanning_param_update = true; 4818 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4819 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4820 hci_stack->le_whitelist_capacity = 0; 4821 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4822 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4823 #endif 4824 #endif 4825 #ifdef ENABLE_LE_PERIPHERAL 4826 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4827 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4828 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4829 } 4830 if (hci_stack->le_advertisements_data != NULL){ 4831 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4832 } 4833 #endif 4834 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4835 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4836 #endif 4837 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4838 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4839 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4840 #endif 4841 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4842 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4843 #endif 4844 } 4845 4846 #ifdef ENABLE_CLASSIC 4847 /** 4848 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4849 */ 4850 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4851 // store and open remote device db 4852 hci_stack->link_key_db = link_key_db; 4853 if (hci_stack->link_key_db) { 4854 hci_stack->link_key_db->open(); 4855 } 4856 } 4857 #endif 4858 4859 void hci_init(const hci_transport_t *transport, const void *config){ 4860 4861 #ifdef HAVE_MALLOC 4862 if (!hci_stack) { 4863 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4864 } 4865 #else 4866 hci_stack = &hci_stack_static; 4867 #endif 4868 memset(hci_stack, 0, sizeof(hci_stack_t)); 4869 4870 // reference to use transport layer implementation 4871 hci_stack->hci_transport = transport; 4872 4873 // reference to used config 4874 hci_stack->config = config; 4875 4876 // setup pointer for outgoing packet buffer 4877 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4878 4879 // max acl payload size defined in config.h 4880 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4881 4882 // register packet handlers with transport 4883 transport->register_packet_handler(&packet_handler); 4884 4885 hci_stack->state = HCI_STATE_OFF; 4886 4887 // class of device 4888 hci_stack->class_of_device = 0x007a020c; // Smartphone 4889 4890 // bondable by default 4891 hci_stack->bondable = 1; 4892 4893 #ifdef ENABLE_CLASSIC 4894 // classic name 4895 hci_stack->local_name = default_classic_name; 4896 4897 // Master slave policy 4898 hci_stack->master_slave_policy = 1; 4899 4900 // Allow Role Switch 4901 hci_stack->allow_role_switch = 1; 4902 4903 // Default / minimum security level = 2 4904 hci_stack->gap_security_level = LEVEL_2; 4905 4906 // Default Security Mode 4 4907 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4908 4909 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4910 hci_stack->gap_required_encyrption_key_size = 7; 4911 4912 // Link Supervision Timeout 4913 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4914 4915 // All ACL packet types are enabledh 4916 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4917 #endif 4918 4919 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4920 hci_stack->ssp_enable = 1; 4921 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4922 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4923 hci_stack->ssp_auto_accept = 1; 4924 4925 // Secure Connections: enable (requires support from Controller) 4926 hci_stack->secure_connections_enable = true; 4927 4928 // voice setting - signed 16 bit pcm data with CVSD over the air 4929 hci_stack->sco_voice_setting = 0x60; 4930 4931 #ifdef ENABLE_BLE 4932 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4933 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4934 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4935 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4936 hci_stack->le_connection_latency = 4; // 4 4937 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4938 hci_stack->le_minimum_ce_length = 0; // 0 ms 4939 hci_stack->le_maximum_ce_length = 0; // 0 ms 4940 #endif 4941 4942 #ifdef ENABLE_LE_CENTRAL 4943 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4944 4945 // default LE Scanning 4946 hci_stack->le_scan_type = 0x01; // active 4947 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4948 hci_stack->le_scan_window = 0x30; // 30 ms 4949 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4950 #endif 4951 4952 #ifdef ENABLE_LE_PERIPHERAL 4953 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4954 4955 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4956 hci_stack->le_advertisements_interval_min = 0x0800; 4957 hci_stack->le_advertisements_interval_max = 0x0800; 4958 hci_stack->le_advertisements_type = 0; 4959 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4960 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4961 hci_stack->le_advertisements_channel_map = 0x07; 4962 hci_stack->le_advertisements_filter_policy = 0; 4963 #endif 4964 4965 // connection parameter range used to answer connection parameter update requests in l2cap 4966 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4967 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4968 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4969 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4970 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4971 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4972 4973 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4974 hci_stack->iso_packets_to_queue = 1; 4975 #endif 4976 4977 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4978 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4979 #endif 4980 4981 hci_state_reset(); 4982 } 4983 4984 void hci_deinit(void){ 4985 btstack_run_loop_remove_timer(&hci_stack->timeout); 4986 #ifdef HAVE_MALLOC 4987 if (hci_stack) { 4988 free(hci_stack); 4989 } 4990 #endif 4991 hci_stack = NULL; 4992 4993 #ifdef ENABLE_CLASSIC 4994 disable_l2cap_timeouts = 0; 4995 #endif 4996 } 4997 4998 /** 4999 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5000 */ 5001 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5002 hci_stack->chipset = chipset_driver; 5003 5004 // reset chipset driver - init is also called on power_up 5005 if (hci_stack->chipset && hci_stack->chipset->init){ 5006 hci_stack->chipset->init(hci_stack->config); 5007 } 5008 } 5009 5010 void hci_enable_custom_pre_init(void){ 5011 hci_stack->chipset_pre_init = true; 5012 } 5013 5014 /** 5015 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5016 */ 5017 void hci_set_control(const btstack_control_t *hardware_control){ 5018 // references to used control implementation 5019 hci_stack->control = hardware_control; 5020 // init with transport config 5021 hardware_control->init(hci_stack->config); 5022 } 5023 5024 static void hci_discard_connections(void){ 5025 btstack_linked_list_iterator_t it; 5026 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5027 while (btstack_linked_list_iterator_has_next(&it)){ 5028 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5029 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5030 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5031 hci_shutdown_connection(connection); 5032 } 5033 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5034 while (hci_stack->iso_streams != NULL){ 5035 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5036 } 5037 #endif 5038 } 5039 5040 void hci_close(void){ 5041 5042 #ifdef ENABLE_CLASSIC 5043 // close remote device db 5044 if (hci_stack->link_key_db) { 5045 hci_stack->link_key_db->close(); 5046 } 5047 #endif 5048 5049 hci_discard_connections(); 5050 5051 hci_power_control(HCI_POWER_OFF); 5052 5053 #ifdef HAVE_MALLOC 5054 free(hci_stack); 5055 #endif 5056 hci_stack = NULL; 5057 } 5058 5059 #ifdef HAVE_SCO_TRANSPORT 5060 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5061 hci_stack->sco_transport = sco_transport; 5062 sco_transport->register_packet_handler(&packet_handler); 5063 } 5064 #endif 5065 5066 #ifdef ENABLE_CLASSIC 5067 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5068 // validate ranage and set 5069 if (encryption_key_size < 7) return; 5070 if (encryption_key_size > 16) return; 5071 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5072 } 5073 5074 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5075 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5076 hci_stack->gap_security_mode = security_mode; 5077 return ERROR_CODE_SUCCESS; 5078 } else { 5079 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5080 } 5081 } 5082 5083 gap_security_mode_t gap_get_security_mode(void){ 5084 return hci_stack->gap_security_mode; 5085 } 5086 5087 void gap_set_security_level(gap_security_level_t security_level){ 5088 hci_stack->gap_security_level = security_level; 5089 } 5090 5091 gap_security_level_t gap_get_security_level(void){ 5092 if (hci_stack->gap_secure_connections_only_mode){ 5093 return LEVEL_4; 5094 } 5095 return hci_stack->gap_security_level; 5096 } 5097 5098 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5099 hci_stack->gap_minimal_service_security_level = security_level; 5100 } 5101 5102 void gap_set_secure_connections_only_mode(bool enable){ 5103 hci_stack->gap_secure_connections_only_mode = enable; 5104 } 5105 5106 bool gap_get_secure_connections_only_mode(void){ 5107 return hci_stack->gap_secure_connections_only_mode; 5108 } 5109 #endif 5110 5111 #ifdef ENABLE_CLASSIC 5112 void gap_set_class_of_device(uint32_t class_of_device){ 5113 hci_stack->class_of_device = class_of_device; 5114 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5115 hci_run(); 5116 } 5117 5118 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5119 hci_stack->default_link_policy_settings = default_link_policy_settings; 5120 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5121 hci_run(); 5122 } 5123 5124 void gap_set_allow_role_switch(bool allow_role_switch){ 5125 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5126 } 5127 5128 uint8_t hci_get_allow_role_switch(void){ 5129 return hci_stack->allow_role_switch; 5130 } 5131 5132 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5133 hci_stack->link_supervision_timeout = link_supervision_timeout; 5134 } 5135 5136 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5137 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5138 } 5139 5140 uint16_t hci_automatic_flush_timeout(void){ 5141 return hci_stack->automatic_flush_timeout; 5142 } 5143 5144 void hci_disable_l2cap_timeout_check(void){ 5145 disable_l2cap_timeouts = 1; 5146 } 5147 #endif 5148 5149 #ifndef HAVE_HOST_CONTROLLER_API 5150 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5151 void hci_set_bd_addr(bd_addr_t addr){ 5152 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5153 hci_stack->custom_bd_addr_set = 1; 5154 } 5155 #endif 5156 5157 // State-Module-Driver overview 5158 // state module low-level 5159 // HCI_STATE_OFF off close 5160 // HCI_STATE_INITIALIZING, on open 5161 // HCI_STATE_WORKING, on open 5162 // HCI_STATE_HALTING, on open 5163 // HCI_STATE_SLEEPING, off/sleep close 5164 // HCI_STATE_FALLING_ASLEEP on open 5165 5166 static int hci_power_control_on(void){ 5167 5168 // power on 5169 int err = 0; 5170 if (hci_stack->control && hci_stack->control->on){ 5171 err = (*hci_stack->control->on)(); 5172 } 5173 if (err){ 5174 log_error( "POWER_ON failed"); 5175 hci_emit_hci_open_failed(); 5176 return err; 5177 } 5178 5179 // int chipset driver 5180 if (hci_stack->chipset && hci_stack->chipset->init){ 5181 hci_stack->chipset->init(hci_stack->config); 5182 } 5183 5184 // init transport 5185 if (hci_stack->hci_transport->init){ 5186 hci_stack->hci_transport->init(hci_stack->config); 5187 } 5188 5189 // open transport 5190 err = hci_stack->hci_transport->open(); 5191 if (err){ 5192 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5193 if (hci_stack->control && hci_stack->control->off){ 5194 (*hci_stack->control->off)(); 5195 } 5196 hci_emit_hci_open_failed(); 5197 return err; 5198 } 5199 return 0; 5200 } 5201 5202 static void hci_power_control_off(void){ 5203 5204 log_info("hci_power_control_off"); 5205 5206 // close low-level device 5207 hci_stack->hci_transport->close(); 5208 5209 log_info("hci_power_control_off - hci_transport closed"); 5210 5211 // power off 5212 if (hci_stack->control && hci_stack->control->off){ 5213 (*hci_stack->control->off)(); 5214 } 5215 5216 log_info("hci_power_control_off - control closed"); 5217 5218 hci_stack->state = HCI_STATE_OFF; 5219 } 5220 5221 static void hci_power_control_sleep(void){ 5222 5223 log_info("hci_power_control_sleep"); 5224 5225 #if 0 5226 // don't close serial port during sleep 5227 5228 // close low-level device 5229 hci_stack->hci_transport->close(hci_stack->config); 5230 #endif 5231 5232 // sleep mode 5233 if (hci_stack->control && hci_stack->control->sleep){ 5234 (*hci_stack->control->sleep)(); 5235 } 5236 5237 hci_stack->state = HCI_STATE_SLEEPING; 5238 } 5239 5240 static int hci_power_control_wake(void){ 5241 5242 log_info("hci_power_control_wake"); 5243 5244 // wake on 5245 if (hci_stack->control && hci_stack->control->wake){ 5246 (*hci_stack->control->wake)(); 5247 } 5248 5249 #if 0 5250 // open low-level device 5251 int err = hci_stack->hci_transport->open(hci_stack->config); 5252 if (err){ 5253 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5254 if (hci_stack->control && hci_stack->control->off){ 5255 (*hci_stack->control->off)(); 5256 } 5257 hci_emit_hci_open_failed(); 5258 return err; 5259 } 5260 #endif 5261 5262 return 0; 5263 } 5264 5265 static void hci_power_enter_initializing_state(void){ 5266 // set up state machine 5267 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5268 hci_stack->hci_packet_buffer_reserved = false; 5269 hci_stack->state = HCI_STATE_INITIALIZING; 5270 5271 #ifndef HAVE_HOST_CONTROLLER_API 5272 if (hci_stack->chipset_pre_init) { 5273 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5274 } else 5275 #endif 5276 { 5277 hci_stack->substate = HCI_INIT_SEND_RESET; 5278 } 5279 } 5280 5281 static void hci_power_enter_halting_state(void){ 5282 #ifdef ENABLE_BLE 5283 // drop entries scheduled for removal, mark others for re-adding 5284 btstack_linked_list_iterator_t it; 5285 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5286 while (btstack_linked_list_iterator_has_next(&it)){ 5287 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5288 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5289 btstack_linked_list_iterator_remove(&it); 5290 btstack_memory_whitelist_entry_free(entry); 5291 } else { 5292 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5293 } 5294 } 5295 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5296 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5297 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5298 while (btstack_linked_list_iterator_has_next(&it)){ 5299 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5300 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5301 btstack_linked_list_iterator_remove(&it); 5302 btstack_memory_periodic_advertiser_list_entry_free(entry); 5303 } else { 5304 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5305 continue; 5306 } 5307 } 5308 #endif 5309 #endif 5310 // see hci_run 5311 hci_stack->state = HCI_STATE_HALTING; 5312 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5313 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5314 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5315 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5316 btstack_run_loop_add_timer(&hci_stack->timeout); 5317 } 5318 5319 // returns error 5320 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5321 int err; 5322 switch (power_mode){ 5323 case HCI_POWER_ON: 5324 err = hci_power_control_on(); 5325 if (err != 0) { 5326 log_error("hci_power_control_on() error %d", err); 5327 return err; 5328 } 5329 hci_power_enter_initializing_state(); 5330 break; 5331 case HCI_POWER_OFF: 5332 // do nothing 5333 break; 5334 case HCI_POWER_SLEEP: 5335 // do nothing (with SLEEP == OFF) 5336 break; 5337 default: 5338 btstack_assert(false); 5339 break; 5340 } 5341 return ERROR_CODE_SUCCESS; 5342 } 5343 5344 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5345 switch (power_mode){ 5346 case HCI_POWER_ON: 5347 // do nothing 5348 break; 5349 case HCI_POWER_OFF: 5350 // no connections yet, just turn it off 5351 hci_power_control_off(); 5352 break; 5353 case HCI_POWER_SLEEP: 5354 // no connections yet, just turn it off 5355 hci_power_control_sleep(); 5356 break; 5357 default: 5358 btstack_assert(false); 5359 break; 5360 } 5361 return ERROR_CODE_SUCCESS; 5362 } 5363 5364 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5365 switch (power_mode){ 5366 case HCI_POWER_ON: 5367 // do nothing 5368 break; 5369 case HCI_POWER_OFF: 5370 hci_power_enter_halting_state(); 5371 break; 5372 case HCI_POWER_SLEEP: 5373 // see hci_run 5374 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5375 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5376 break; 5377 default: 5378 btstack_assert(false); 5379 break; 5380 } 5381 return ERROR_CODE_SUCCESS; 5382 } 5383 5384 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5385 switch (power_mode){ 5386 case HCI_POWER_ON: 5387 hci_power_enter_initializing_state(); 5388 break; 5389 case HCI_POWER_OFF: 5390 // do nothing 5391 break; 5392 case HCI_POWER_SLEEP: 5393 // see hci_run 5394 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5395 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5396 break; 5397 default: 5398 btstack_assert(false); 5399 break; 5400 } 5401 return ERROR_CODE_SUCCESS; 5402 } 5403 5404 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5405 switch (power_mode){ 5406 case HCI_POWER_ON: 5407 hci_power_enter_initializing_state(); 5408 break; 5409 case HCI_POWER_OFF: 5410 hci_power_enter_halting_state(); 5411 break; 5412 case HCI_POWER_SLEEP: 5413 // do nothing 5414 break; 5415 default: 5416 btstack_assert(false); 5417 break; 5418 } 5419 return ERROR_CODE_SUCCESS; 5420 } 5421 5422 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5423 int err; 5424 switch (power_mode){ 5425 case HCI_POWER_ON: 5426 err = hci_power_control_wake(); 5427 if (err) return err; 5428 hci_power_enter_initializing_state(); 5429 break; 5430 case HCI_POWER_OFF: 5431 hci_power_enter_halting_state(); 5432 break; 5433 case HCI_POWER_SLEEP: 5434 // do nothing 5435 break; 5436 default: 5437 btstack_assert(false); 5438 break; 5439 } 5440 return ERROR_CODE_SUCCESS; 5441 } 5442 5443 int hci_power_control(HCI_POWER_MODE power_mode){ 5444 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5445 btstack_run_loop_remove_timer(&hci_stack->timeout); 5446 int err = 0; 5447 switch (hci_stack->state){ 5448 case HCI_STATE_OFF: 5449 err = hci_power_control_state_off(power_mode); 5450 break; 5451 case HCI_STATE_INITIALIZING: 5452 err = hci_power_control_state_initializing(power_mode); 5453 break; 5454 case HCI_STATE_WORKING: 5455 err = hci_power_control_state_working(power_mode); 5456 break; 5457 case HCI_STATE_HALTING: 5458 err = hci_power_control_state_halting(power_mode); 5459 break; 5460 case HCI_STATE_FALLING_ASLEEP: 5461 err = hci_power_control_state_falling_asleep(power_mode); 5462 break; 5463 case HCI_STATE_SLEEPING: 5464 err = hci_power_control_state_sleeping(power_mode); 5465 break; 5466 default: 5467 btstack_assert(false); 5468 break; 5469 } 5470 if (err != 0){ 5471 return err; 5472 } 5473 5474 // create internal event 5475 hci_emit_state(); 5476 5477 // trigger next/first action 5478 hci_run(); 5479 5480 return 0; 5481 } 5482 5483 5484 static void hci_halting_run(void) { 5485 5486 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5487 5488 hci_connection_t *connection; 5489 #ifdef ENABLE_BLE 5490 #ifdef ENABLE_LE_PERIPHERAL 5491 bool stop_advertismenets; 5492 #endif 5493 #endif 5494 5495 switch (hci_stack->substate) { 5496 case HCI_HALTING_CLASSIC_STOP: 5497 #ifdef ENABLE_CLASSIC 5498 if (!hci_can_send_command_packet_now()) return; 5499 5500 if (hci_stack->connectable || hci_stack->discoverable){ 5501 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5502 hci_send_cmd(&hci_write_scan_enable, 0); 5503 return; 5504 } 5505 #endif 5506 /* fall through */ 5507 5508 case HCI_HALTING_LE_ADV_STOP: 5509 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5510 5511 #ifdef ENABLE_BLE 5512 #ifdef ENABLE_LE_PERIPHERAL 5513 if (!hci_can_send_command_packet_now()) return; 5514 5515 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5516 5517 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5518 if (hci_le_extended_advertising_supported()){ 5519 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5520 btstack_linked_list_iterator_t it; 5521 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5522 // stop all periodic advertisements and check if an extended set is active 5523 while (btstack_linked_list_iterator_has_next(&it)){ 5524 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5525 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5526 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5527 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5528 return; 5529 } 5530 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5531 stop_advertismenets = true; 5532 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5533 } 5534 } 5535 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5536 if (stop_advertismenets){ 5537 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5538 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5539 return; 5540 } 5541 } else 5542 #else /* ENABLE_LE_PERIPHERAL */ 5543 { 5544 if (stop_advertismenets) { 5545 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5546 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5547 return; 5548 } 5549 } 5550 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5551 #endif /* ENABLE_LE_PERIPHERAL */ 5552 #endif /* ENABLE_BLE */ 5553 5554 /* fall through */ 5555 5556 case HCI_HALTING_LE_SCAN_STOP: 5557 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5558 if (!hci_can_send_command_packet_now()) return; 5559 5560 #ifdef ENABLE_BLE 5561 #ifdef ENABLE_LE_CENTRAL 5562 if (hci_stack->le_scanning_active){ 5563 hci_le_scan_stop(); 5564 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5565 return; 5566 } 5567 #endif 5568 #endif 5569 5570 /* fall through */ 5571 5572 case HCI_HALTING_DISCONNECT_ALL: 5573 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5574 if (!hci_can_send_command_packet_now()) return; 5575 5576 // close all open connections 5577 connection = (hci_connection_t *) hci_stack->connections; 5578 if (connection) { 5579 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5580 5581 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5582 5583 // check state 5584 switch(connection->state) { 5585 case SENT_DISCONNECT: 5586 case RECEIVED_DISCONNECTION_COMPLETE: 5587 // wait until connection is gone 5588 return; 5589 default: 5590 break; 5591 } 5592 5593 // finally, send the disconnect command 5594 connection->state = SENT_DISCONNECT; 5595 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5596 return; 5597 } 5598 5599 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5600 // stop BIGs and BIG Syncs 5601 if (hci_stack->le_audio_bigs != NULL){ 5602 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5603 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5604 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5605 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5606 return; 5607 } 5608 if (hci_stack->le_audio_big_syncs != NULL){ 5609 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5610 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5611 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5612 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5613 return; 5614 } 5615 #endif 5616 5617 btstack_run_loop_remove_timer(&hci_stack->timeout); 5618 5619 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5620 log_info("HCI_STATE_HALTING: wait 50 ms"); 5621 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5622 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5623 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5624 btstack_run_loop_add_timer(&hci_stack->timeout); 5625 break; 5626 5627 case HCI_HALTING_W4_CLOSE_TIMER: 5628 // keep waiting 5629 break; 5630 5631 case HCI_HALTING_CLOSE: 5632 // close left over connections (that had not been properly closed before) 5633 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5634 hci_discard_connections(); 5635 5636 log_info("HCI_STATE_HALTING, calling off"); 5637 5638 // switch mode 5639 hci_power_control_off(); 5640 5641 log_info("HCI_STATE_HALTING, emitting state"); 5642 hci_emit_state(); 5643 log_info("HCI_STATE_HALTING, done"); 5644 break; 5645 5646 default: 5647 break; 5648 } 5649 }; 5650 5651 static void hci_falling_asleep_run(void){ 5652 hci_connection_t * connection; 5653 switch(hci_stack->substate) { 5654 case HCI_FALLING_ASLEEP_DISCONNECT: 5655 log_info("HCI_STATE_FALLING_ASLEEP"); 5656 // close all open connections 5657 connection = (hci_connection_t *) hci_stack->connections; 5658 if (connection){ 5659 5660 // send disconnect 5661 if (!hci_can_send_command_packet_now()) return; 5662 5663 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5664 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5665 5666 // send disconnected event right away - causes higher layer connections to get closed, too. 5667 hci_shutdown_connection(connection); 5668 return; 5669 } 5670 5671 if (hci_classic_supported()){ 5672 // disable page and inquiry scan 5673 if (!hci_can_send_command_packet_now()) return; 5674 5675 log_info("HCI_STATE_HALTING, disabling inq scans"); 5676 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5677 5678 // continue in next sub state 5679 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5680 break; 5681 } 5682 5683 /* fall through */ 5684 5685 case HCI_FALLING_ASLEEP_COMPLETE: 5686 log_info("HCI_STATE_HALTING, calling sleep"); 5687 // switch mode 5688 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5689 hci_emit_state(); 5690 break; 5691 5692 default: 5693 break; 5694 } 5695 } 5696 5697 #ifdef ENABLE_CLASSIC 5698 5699 static void hci_update_scan_enable(void){ 5700 // 2 = page scan, 1 = inq scan 5701 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5702 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5703 hci_run(); 5704 } 5705 5706 void gap_discoverable_control(uint8_t enable){ 5707 if (enable) enable = 1; // normalize argument 5708 5709 if (hci_stack->discoverable == enable){ 5710 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5711 return; 5712 } 5713 5714 hci_stack->discoverable = enable; 5715 hci_update_scan_enable(); 5716 } 5717 5718 void gap_connectable_control(uint8_t enable){ 5719 if (enable) enable = 1; // normalize argument 5720 5721 // don't emit event 5722 if (hci_stack->connectable == enable) return; 5723 5724 hci_stack->connectable = enable; 5725 hci_update_scan_enable(); 5726 } 5727 #endif 5728 5729 void gap_local_bd_addr(bd_addr_t address_buffer){ 5730 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5731 } 5732 5733 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5734 static void hci_host_num_completed_packets(void){ 5735 5736 // create packet manually as arrays are not supported and num_commands should not get reduced 5737 hci_reserve_packet_buffer(); 5738 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5739 5740 uint16_t size = 0; 5741 uint16_t num_handles = 0; 5742 packet[size++] = 0x35; 5743 packet[size++] = 0x0c; 5744 size++; // skip param len 5745 size++; // skip num handles 5746 5747 // add { handle, packets } entries 5748 btstack_linked_item_t * it; 5749 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5750 hci_connection_t * connection = (hci_connection_t *) it; 5751 if (connection->num_packets_completed){ 5752 little_endian_store_16(packet, size, connection->con_handle); 5753 size += 2; 5754 little_endian_store_16(packet, size, connection->num_packets_completed); 5755 size += 2; 5756 // 5757 num_handles++; 5758 connection->num_packets_completed = 0; 5759 } 5760 } 5761 5762 packet[2] = size - 3; 5763 packet[3] = num_handles; 5764 5765 hci_stack->host_completed_packets = 0; 5766 5767 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5768 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5769 5770 // release packet buffer for synchronous transport implementations 5771 if (hci_transport_synchronous()){ 5772 hci_release_packet_buffer(); 5773 hci_emit_transport_packet_sent(); 5774 } 5775 } 5776 #endif 5777 5778 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5779 UNUSED(ds); 5780 hci_stack->substate = HCI_HALTING_CLOSE; 5781 hci_halting_run(); 5782 } 5783 5784 static bool hci_run_acl_fragments(void){ 5785 if (hci_stack->acl_fragmentation_total_size > 0u) { 5786 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5787 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5788 if (connection) { 5789 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5790 hci_send_acl_packet_fragments(connection); 5791 return true; 5792 } 5793 } else { 5794 // connection gone -> discard further fragments 5795 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5796 hci_stack->acl_fragmentation_total_size = 0; 5797 hci_stack->acl_fragmentation_pos = 0; 5798 } 5799 } 5800 return false; 5801 } 5802 5803 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5804 static bool hci_run_iso_fragments(void){ 5805 if (hci_stack->iso_fragmentation_total_size > 0u) { 5806 // TODO: flow control 5807 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5808 hci_send_iso_packet_fragments(); 5809 return true; 5810 } 5811 } 5812 return false; 5813 } 5814 #endif 5815 5816 #ifdef ENABLE_CLASSIC 5817 5818 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5819 static bool hci_classic_operation_active(void) { 5820 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5821 return true; 5822 } 5823 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5824 return true; 5825 } 5826 btstack_linked_item_t * it; 5827 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5828 hci_connection_t *connection = (hci_connection_t *) it; 5829 switch (connection->state) { 5830 case SENT_CREATE_CONNECTION: 5831 case SENT_CANCEL_CONNECTION: 5832 case SENT_DISCONNECT: 5833 return true; 5834 default: 5835 break; 5836 } 5837 } 5838 return false; 5839 } 5840 #endif 5841 5842 static bool hci_run_general_gap_classic(void){ 5843 5844 // assert stack is working and classic is active 5845 if (hci_classic_supported() == false) return false; 5846 if (hci_stack->state != HCI_STATE_WORKING) return false; 5847 5848 // decline incoming connections 5849 if (hci_stack->decline_reason){ 5850 uint8_t reason = hci_stack->decline_reason; 5851 hci_stack->decline_reason = 0; 5852 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5853 return true; 5854 } 5855 5856 if (hci_stack->gap_tasks_classic != 0){ 5857 hci_run_gap_tasks_classic(); 5858 return true; 5859 } 5860 5861 // start/stop inquiry 5862 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5863 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5864 if (hci_classic_operation_active() == false) 5865 #endif 5866 { 5867 uint8_t duration = hci_stack->inquiry_state; 5868 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5869 if (hci_stack->inquiry_max_period_length != 0){ 5870 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); 5871 } else { 5872 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5873 } 5874 return true; 5875 } 5876 } 5877 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5878 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5879 hci_send_cmd(&hci_inquiry_cancel); 5880 return true; 5881 } 5882 5883 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5884 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5885 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5886 return true; 5887 } 5888 5889 // remote name request 5890 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5891 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5892 if (hci_classic_operation_active() == false) 5893 #endif 5894 { 5895 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5896 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5897 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5898 return true; 5899 } 5900 } 5901 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5902 // Local OOB data 5903 if (hci_stack->classic_read_local_oob_data){ 5904 hci_stack->classic_read_local_oob_data = false; 5905 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5906 hci_send_cmd(&hci_read_local_extended_oob_data); 5907 } else { 5908 hci_send_cmd(&hci_read_local_oob_data); 5909 } 5910 } 5911 #endif 5912 // pairing 5913 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5914 uint8_t state = hci_stack->gap_pairing_state; 5915 uint8_t pin_code[PIN_CODE_LEN]; 5916 switch (state){ 5917 case GAP_PAIRING_STATE_SEND_PIN: 5918 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5919 memset(pin_code, 0, 16); 5920 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5921 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5922 break; 5923 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5924 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5925 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5926 break; 5927 case GAP_PAIRING_STATE_SEND_PASSKEY: 5928 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5929 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5930 break; 5931 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5932 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5933 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5934 break; 5935 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5936 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5937 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5938 break; 5939 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5940 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5941 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5942 break; 5943 default: 5944 break; 5945 } 5946 return true; 5947 } 5948 return false; 5949 } 5950 #endif 5951 5952 #ifdef ENABLE_BLE 5953 5954 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5955 static uint8_t hci_le_num_phys(uint8_t phys){ 5956 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5957 btstack_assert(phys); 5958 return num_bits_set[phys]; 5959 } 5960 #endif 5961 5962 #ifdef ENABLE_LE_CENTRAL 5963 static void hci_le_scan_stop(void){ 5964 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5965 if (hci_le_extended_advertising_supported()) { 5966 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5967 } else 5968 #endif 5969 { 5970 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5971 } 5972 } 5973 5974 static void 5975 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5976 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5977 if (hci_le_extended_advertising_supported()) { 5978 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5979 uint16_t le_connection_scan_interval[3]; 5980 uint16_t le_connection_scan_window[3]; 5981 uint16_t le_connection_interval_min[3]; 5982 uint16_t le_connection_interval_max[3]; 5983 uint16_t le_connection_latency[3]; 5984 uint16_t le_supervision_timeout[3]; 5985 uint16_t le_minimum_ce_length[3]; 5986 uint16_t le_maximum_ce_length[3]; 5987 5988 uint8_t i; 5989 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5990 for (i=0;i<num_phys;i++){ 5991 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5992 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5993 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5994 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5995 le_connection_latency[i] = hci_stack->le_connection_latency; 5996 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 5997 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 5998 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 5999 } 6000 hci_send_cmd(&hci_le_extended_create_connection, 6001 initiator_filter_policy, 6002 hci_stack->le_connection_own_addr_type, // our addr type: 6003 address_type, // peer address type 6004 address, // peer bd addr 6005 hci_stack->le_connection_phys, // initiating PHY 6006 le_connection_scan_interval, // conn scan interval 6007 le_connection_scan_window, // conn scan windows 6008 le_connection_interval_min, // conn interval min 6009 le_connection_interval_max, // conn interval max 6010 le_connection_latency, // conn latency 6011 le_supervision_timeout, // conn latency 6012 le_minimum_ce_length, // min ce length 6013 le_maximum_ce_length // max ce length 6014 ); 6015 } else 6016 #endif 6017 { 6018 hci_send_cmd(&hci_le_create_connection, 6019 hci_stack->le_connection_scan_interval, // conn scan interval 6020 hci_stack->le_connection_scan_window, // conn scan windows 6021 initiator_filter_policy, // don't use whitelist 6022 address_type, // peer address type 6023 address, // peer bd addr 6024 hci_stack->le_connection_own_addr_type, // our addr type: 6025 hci_stack->le_connection_interval_min, // conn interval min 6026 hci_stack->le_connection_interval_max, // conn interval max 6027 hci_stack->le_connection_latency, // conn latency 6028 hci_stack->le_supervision_timeout, // conn latency 6029 hci_stack->le_minimum_ce_length, // min ce length 6030 hci_stack->le_maximum_ce_length // max ce length 6031 ); 6032 } 6033 } 6034 #endif 6035 6036 #ifdef ENABLE_LE_PERIPHERAL 6037 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6038 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6039 uint8_t operation = 0; 6040 if (pos == 0){ 6041 // first fragment or complete data 6042 operation |= 1; 6043 } 6044 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6045 // last fragment or complete data 6046 operation |= 2; 6047 } 6048 return operation; 6049 } 6050 #endif 6051 #endif 6052 6053 static bool hci_run_general_gap_le(void){ 6054 6055 btstack_linked_list_iterator_t lit; 6056 6057 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6058 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6059 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6060 hci_stack->le_resolvable_private_address_update_s = 0; 6061 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6062 return true; 6063 } 6064 #endif 6065 6066 // Phase 1: collect what to stop 6067 6068 #ifdef ENABLE_LE_CENTRAL 6069 bool scanning_stop = false; 6070 bool connecting_stop = false; 6071 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6072 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6073 bool periodic_sync_stop = false; 6074 #endif 6075 #endif 6076 #endif 6077 6078 #ifdef ENABLE_LE_PERIPHERAL 6079 bool advertising_stop = false; 6080 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6081 le_advertising_set_t * advertising_stop_set = NULL; 6082 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6083 bool periodic_advertising_stop = false; 6084 #endif 6085 #endif 6086 #endif 6087 6088 // check if own address changes 6089 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6090 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6091 6092 // check if whitelist needs modification 6093 bool whitelist_modification_pending = false; 6094 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6095 while (btstack_linked_list_iterator_has_next(&lit)){ 6096 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6097 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6098 whitelist_modification_pending = true; 6099 break; 6100 } 6101 } 6102 6103 // check if resolving list needs modification 6104 bool resolving_list_modification_pending = false; 6105 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6106 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6107 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6108 resolving_list_modification_pending = true; 6109 } 6110 #endif 6111 6112 #ifdef ENABLE_LE_CENTRAL 6113 6114 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6115 // check if periodic advertiser list needs modification 6116 bool periodic_list_modification_pending = false; 6117 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6118 while (btstack_linked_list_iterator_has_next(&lit)){ 6119 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6120 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6121 periodic_list_modification_pending = true; 6122 break; 6123 } 6124 } 6125 #endif 6126 6127 // scanning control 6128 if (hci_stack->le_scanning_active) { 6129 // stop if: 6130 // - parameter change required 6131 // - it's disabled 6132 // - whitelist change required but used for scanning 6133 // - resolving list modified 6134 // - own address changes 6135 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6136 if ((hci_stack->le_scanning_param_update) || 6137 !hci_stack->le_scanning_enabled || 6138 (scanning_uses_whitelist && whitelist_modification_pending) || 6139 resolving_list_modification_pending || 6140 random_address_change){ 6141 6142 scanning_stop = true; 6143 } 6144 } 6145 6146 // connecting control 6147 bool connecting_with_whitelist; 6148 switch (hci_stack->le_connecting_state){ 6149 case LE_CONNECTING_DIRECT: 6150 case LE_CONNECTING_WHITELIST: 6151 // stop connecting if: 6152 // - connecting uses white and whitelist modification pending 6153 // - if it got disabled 6154 // - resolving list modified 6155 // - own address changes 6156 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6157 if ((connecting_with_whitelist && whitelist_modification_pending) || 6158 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6159 resolving_list_modification_pending || 6160 random_address_change) { 6161 6162 connecting_stop = true; 6163 } 6164 break; 6165 default: 6166 break; 6167 } 6168 6169 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6170 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6171 // periodic sync control 6172 bool sync_with_advertiser_list; 6173 switch(hci_stack->le_periodic_sync_state){ 6174 case LE_CONNECTING_DIRECT: 6175 case LE_CONNECTING_WHITELIST: 6176 // stop sync if: 6177 // - sync with advertiser list and advertiser list modification pending 6178 // - if it got disabled 6179 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6180 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6181 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6182 periodic_sync_stop = true; 6183 } 6184 break; 6185 default: 6186 break; 6187 } 6188 #endif 6189 #endif 6190 6191 #endif /* ENABLE_LE_CENTRAL */ 6192 6193 #ifdef ENABLE_LE_PERIPHERAL 6194 // le advertisement control 6195 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6196 // stop if: 6197 // - parameter change required 6198 // - random address used in advertising and changes 6199 // - it's disabled 6200 // - whitelist change required but used for advertisement filter policy 6201 // - resolving list modified 6202 // - own address changes 6203 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6204 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6205 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6206 if (advertising_change || 6207 (advertising_uses_random_address && random_address_change) || 6208 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6209 (advertising_uses_whitelist && whitelist_modification_pending) || 6210 resolving_list_modification_pending || 6211 random_address_change) { 6212 6213 advertising_stop = true; 6214 } 6215 } 6216 6217 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6218 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6219 btstack_linked_list_iterator_t it; 6220 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6221 while (btstack_linked_list_iterator_has_next(&it)){ 6222 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6223 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6224 // stop if: 6225 // - parameter change required 6226 // - random address used in connectable advertising and changes 6227 // - it's disabled 6228 // - whitelist change required but used for advertisement filter policy 6229 // - resolving list modified 6230 // - own address changes 6231 // - advertisement set will be removed 6232 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6233 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6234 bool advertising_uses_random_address = 6235 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6236 advertising_connectable; 6237 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6238 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6239 bool advertising_set_random_address_change = 6240 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6241 bool advertising_set_will_be_removed = 6242 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6243 if (advertising_parameter_change || 6244 (advertising_uses_random_address && advertising_set_random_address_change) || 6245 (advertising_enabled == false) || 6246 (advertising_uses_whitelist && whitelist_modification_pending) || 6247 resolving_list_modification_pending || 6248 advertising_set_will_be_removed) { 6249 6250 advertising_stop = true; 6251 advertising_stop_set = advertising_set; 6252 break; 6253 } 6254 } 6255 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6256 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6257 // stop if: 6258 // - it's disabled 6259 // - parameter change required 6260 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6261 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6262 if ((periodic_enabled == false) || periodic_parameter_change){ 6263 periodic_advertising_stop = true; 6264 advertising_stop_set = advertising_set; 6265 } 6266 } 6267 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6268 } 6269 } 6270 #endif 6271 6272 #endif 6273 6274 6275 // Phase 2: stop everything that should be off during modifications 6276 6277 6278 // 2.1 Outgoing connection 6279 #ifdef ENABLE_LE_CENTRAL 6280 if (connecting_stop){ 6281 hci_send_cmd(&hci_le_create_connection_cancel); 6282 return true; 6283 } 6284 #endif 6285 6286 // 2.2 Scanning 6287 #ifdef ENABLE_LE_CENTRAL 6288 if (scanning_stop){ 6289 hci_stack->le_scanning_active = false; 6290 hci_le_scan_stop(); 6291 return true; 6292 } 6293 6294 // 2.3 Periodic Sync 6295 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6296 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6297 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6298 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6299 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6300 return true; 6301 } 6302 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6303 if (periodic_sync_stop){ 6304 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6305 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6306 return true; 6307 } 6308 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6309 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6310 #endif /* ENABLE_LE_CENTRAL */ 6311 6312 // 2.4 Advertising: legacy, extended, periodic 6313 #ifdef ENABLE_LE_PERIPHERAL 6314 if (advertising_stop){ 6315 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6316 if (hci_le_extended_advertising_supported()) { 6317 uint8_t advertising_stop_handle; 6318 if (advertising_stop_set != NULL){ 6319 advertising_stop_handle = advertising_stop_set->advertising_handle; 6320 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6321 } else { 6322 advertising_stop_handle = 0; 6323 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6324 } 6325 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6326 const uint16_t durations[] = { 0 }; 6327 const uint16_t max_events[] = { 0 }; 6328 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6329 } else 6330 #endif 6331 { 6332 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6333 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6334 } 6335 return true; 6336 } 6337 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6338 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6339 if (periodic_advertising_stop){ 6340 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6341 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6342 return true; 6343 } 6344 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6345 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6346 #endif /* ENABLE_LE_PERIPHERAL */ 6347 6348 6349 // Phase 3: modify 6350 6351 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6352 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6353 // GAP Privacy, notify clients upon upcoming random address change 6354 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6355 gap_privacy_clients_notify(hci_stack->le_random_address); 6356 } 6357 6358 // - wait until privacy update completed 6359 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6360 return false; 6361 } 6362 6363 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6364 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6365 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6366 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6367 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6368 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6369 #endif 6370 return true; 6371 } 6372 6373 #ifdef ENABLE_LE_CENTRAL 6374 if (hci_stack->le_scanning_param_update){ 6375 hci_stack->le_scanning_param_update = false; 6376 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6377 if (hci_le_extended_advertising_supported()){ 6378 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6379 uint8_t scan_types[2]; 6380 uint16_t scan_intervals[2]; 6381 uint16_t scan_windows[2]; 6382 6383 uint8_t i; 6384 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6385 for (i=0;i<num_phys;i++){ 6386 scan_types[i] = hci_stack->le_scan_type; 6387 scan_intervals[i] = hci_stack->le_scan_interval; 6388 scan_windows[i] = hci_stack->le_scan_window; 6389 } 6390 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6391 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6392 } else 6393 #endif 6394 { 6395 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6396 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6397 } 6398 return true; 6399 } 6400 #endif 6401 6402 #ifdef ENABLE_LE_PERIPHERAL 6403 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6404 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6405 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6406 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6407 if (hci_le_extended_advertising_supported()){ 6408 // map advertisment type to advertising event properties 6409 uint16_t adv_event_properties = 0; 6410 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6411 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6412 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6413 } 6414 hci_stack->le_advertising_set_in_current_command = 0; 6415 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6416 0, 6417 adv_event_properties, 6418 hci_stack->le_advertisements_interval_min, 6419 hci_stack->le_advertisements_interval_max, 6420 hci_stack->le_advertisements_channel_map, 6421 hci_stack->le_advertisements_own_addr_type, 6422 hci_stack->le_advertisements_direct_address_type, 6423 hci_stack->le_advertisements_direct_address, 6424 hci_stack->le_advertisements_filter_policy, 6425 0x7f, // tx power: no preference 6426 0x01, // primary adv phy: LE 1M 6427 0, // secondary adv max skip 6428 0x01, // secondary adv phy 6429 0, // adv sid 6430 0 // scan request notification 6431 ); 6432 } else 6433 #endif 6434 { 6435 hci_send_cmd(&hci_le_set_advertising_parameters, 6436 hci_stack->le_advertisements_interval_min, 6437 hci_stack->le_advertisements_interval_max, 6438 hci_stack->le_advertisements_type, 6439 hci_stack->le_advertisements_own_addr_type, 6440 hci_stack->le_advertisements_direct_address_type, 6441 hci_stack->le_advertisements_direct_address, 6442 hci_stack->le_advertisements_channel_map, 6443 hci_stack->le_advertisements_filter_policy); 6444 } 6445 return true; 6446 } 6447 6448 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6449 // assumption: only set if extended advertising is supported 6450 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6451 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6452 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6453 return true; 6454 } 6455 #endif 6456 6457 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6458 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6459 uint8_t adv_data_clean[31]; 6460 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6461 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6462 hci_stack->le_advertisements_data_len); 6463 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6464 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6465 if (hci_le_extended_advertising_supported()){ 6466 hci_stack->le_advertising_set_in_current_command = 0; 6467 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6468 } else 6469 #endif 6470 { 6471 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6472 } 6473 return true; 6474 } 6475 6476 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6477 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6478 uint8_t scan_data_clean[31]; 6479 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6480 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6481 hci_stack->le_scan_response_data_len); 6482 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6483 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6484 if (hci_le_extended_advertising_supported()){ 6485 hci_stack->le_advertising_set_in_current_command = 0; 6486 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6487 } else 6488 #endif 6489 { 6490 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6491 } 6492 return true; 6493 } 6494 6495 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6496 if (hci_le_extended_advertising_supported()) { 6497 btstack_linked_list_iterator_t it; 6498 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6499 while (btstack_linked_list_iterator_has_next(&it)){ 6500 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6501 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6502 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6503 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6504 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6505 return true; 6506 } 6507 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6508 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6509 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6510 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6511 advertising_set->advertising_handle, 6512 advertising_set->extended_params.advertising_event_properties, 6513 advertising_set->extended_params.primary_advertising_interval_min, 6514 advertising_set->extended_params.primary_advertising_interval_max, 6515 advertising_set->extended_params.primary_advertising_channel_map, 6516 advertising_set->extended_params.own_address_type, 6517 advertising_set->extended_params.peer_address_type, 6518 advertising_set->extended_params.peer_address, 6519 advertising_set->extended_params.advertising_filter_policy, 6520 advertising_set->extended_params.advertising_tx_power, 6521 advertising_set->extended_params.primary_advertising_phy, 6522 advertising_set->extended_params.secondary_advertising_max_skip, 6523 advertising_set->extended_params.secondary_advertising_phy, 6524 advertising_set->extended_params.advertising_sid, 6525 advertising_set->extended_params.scan_request_notification_enable 6526 ); 6527 return true; 6528 } 6529 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6530 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6531 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6532 return true; 6533 } 6534 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6535 uint16_t pos = advertising_set->adv_data_pos; 6536 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6537 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6538 if ((operation & 0x02) != 0){ 6539 // last fragment or complete data 6540 operation |= 2; 6541 advertising_set->adv_data_pos = 0; 6542 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6543 } else { 6544 advertising_set->adv_data_pos += data_to_upload; 6545 } 6546 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6547 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6548 return true; 6549 } 6550 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6551 uint16_t pos = advertising_set->scan_data_pos; 6552 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6553 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6554 if ((operation & 0x02) != 0){ 6555 advertising_set->scan_data_pos = 0; 6556 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6557 } else { 6558 advertising_set->scan_data_pos += data_to_upload; 6559 } 6560 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6561 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6562 return true; 6563 } 6564 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6565 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6566 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6567 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6568 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6569 advertising_set->advertising_handle, 6570 advertising_set->periodic_params.periodic_advertising_interval_min, 6571 advertising_set->periodic_params.periodic_advertising_interval_max, 6572 advertising_set->periodic_params.periodic_advertising_properties); 6573 return true; 6574 } 6575 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6576 uint16_t pos = advertising_set->periodic_data_pos; 6577 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6578 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6579 if ((operation & 0x02) != 0){ 6580 // last fragment or complete data 6581 operation |= 2; 6582 advertising_set->periodic_data_pos = 0; 6583 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6584 } else { 6585 advertising_set->periodic_data_pos += data_to_upload; 6586 } 6587 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6588 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6589 return true; 6590 } 6591 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6592 } 6593 } 6594 #endif 6595 6596 #endif 6597 6598 #ifdef ENABLE_LE_CENTRAL 6599 // if connect with whitelist was active and is not cancelled yet, wait until next time 6600 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6601 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6602 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6603 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6604 #endif 6605 #endif 6606 6607 // LE Whitelist Management 6608 if (whitelist_modification_pending){ 6609 // add/remove entries 6610 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6611 while (btstack_linked_list_iterator_has_next(&lit)){ 6612 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6613 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6614 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6615 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6616 bd_addr_type_t address_type = entry->address_type; 6617 bd_addr_t address; 6618 memcpy(address, entry->address, 6); 6619 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6620 // remove from whitelist if not scheduled for re-addition 6621 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6622 btstack_memory_whitelist_entry_free(entry); 6623 } 6624 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6625 return true; 6626 } 6627 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6628 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6629 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6630 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6631 return true; 6632 } 6633 } 6634 } 6635 6636 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6637 // LE Resolving List Management 6638 if (resolving_list_modification_pending) { 6639 uint16_t i; 6640 uint8_t null_16[16]; 6641 uint8_t local_irk_flipped[16]; 6642 const uint8_t *local_irk; 6643 switch (hci_stack->le_resolving_list_state) { 6644 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6645 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6646 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6647 return true; 6648 case LE_RESOLVING_LIST_READ_SIZE: 6649 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6650 hci_send_cmd(&hci_le_read_resolving_list_size); 6651 return true; 6652 case LE_RESOLVING_LIST_SEND_CLEAR: 6653 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6654 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6655 sizeof(hci_stack->le_resolving_list_add_entries)); 6656 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6657 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6658 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6659 sizeof(hci_stack->le_resolving_list_remove_entries)); 6660 hci_send_cmd(&hci_le_clear_resolving_list); 6661 return true; 6662 case LE_RESOLVING_LIST_SET_IRK: 6663 // set IRK used by RPA for undirected advertising 6664 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6665 local_irk = gap_get_persistent_irk(); 6666 reverse_128(local_irk, local_irk_flipped); 6667 memset(null_16, 0, sizeof(null_16)); 6668 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6669 null_16, local_irk_flipped); 6670 return true; 6671 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6672 // first remove old entries 6673 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6674 uint8_t offset = i >> 3; 6675 uint8_t mask = 1 << (i & 7); 6676 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6677 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6678 bd_addr_t peer_identity_addreses; 6679 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6680 sm_key_t peer_irk; 6681 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6682 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6683 6684 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6685 // trigger whitelist entry 'update' (work around for controller bug) 6686 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6687 while (btstack_linked_list_iterator_has_next(&lit)) { 6688 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6689 if (entry->address_type != peer_identity_addr_type) continue; 6690 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6691 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6692 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6693 } 6694 #endif 6695 6696 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6697 peer_identity_addreses); 6698 return true; 6699 } 6700 6701 // then add new entries 6702 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6703 uint8_t offset = i >> 3; 6704 uint8_t mask = 1 << (i & 7); 6705 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6706 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6707 bd_addr_t peer_identity_addreses; 6708 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6709 sm_key_t peer_irk; 6710 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6711 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6712 if (btstack_is_null(peer_irk, 16)) continue; 6713 local_irk = gap_get_persistent_irk(); 6714 // command uses format specifier 'P' that stores 16-byte value without flip 6715 uint8_t peer_irk_flipped[16]; 6716 reverse_128(local_irk, local_irk_flipped); 6717 reverse_128(peer_irk, peer_irk_flipped); 6718 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6719 peer_irk_flipped, local_irk_flipped); 6720 return true; 6721 } 6722 6723 // finally, set privacy mode 6724 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6725 uint8_t offset = i >> 3; 6726 uint8_t mask = 1 << (i & 7); 6727 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6728 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6729 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6730 // Network Privacy Mode is default 6731 continue; 6732 } 6733 bd_addr_t peer_identity_address; 6734 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6735 sm_key_t peer_irk; 6736 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6737 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6738 if (btstack_is_null(peer_irk, 16)) continue; 6739 // command uses format specifier 'P' that stores 16-byte value without flip 6740 uint8_t peer_irk_flipped[16]; 6741 reverse_128(peer_irk, peer_irk_flipped); 6742 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6743 return true; 6744 } 6745 break; 6746 6747 default: 6748 break; 6749 } 6750 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6751 } 6752 #endif 6753 6754 #ifdef ENABLE_LE_CENTRAL 6755 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6756 // LE Whitelist Management 6757 if (periodic_list_modification_pending){ 6758 // add/remove entries 6759 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6760 while (btstack_linked_list_iterator_has_next(&lit)){ 6761 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6762 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6763 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6764 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6765 return true; 6766 } 6767 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6768 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6769 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6770 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6771 return true; 6772 } 6773 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6774 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6775 btstack_memory_periodic_advertiser_list_entry_free(entry); 6776 } 6777 } 6778 } 6779 #endif 6780 #endif 6781 6782 #ifdef ENABLE_LE_CENTRAL 6783 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6784 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6785 if (hci_stack->le_past_set_default_params){ 6786 hci_stack->le_past_set_default_params = false; 6787 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6788 hci_stack->le_past_mode, 6789 hci_stack->le_past_skip, 6790 hci_stack->le_past_sync_timeout, 6791 hci_stack->le_past_cte_type); 6792 return true; 6793 } 6794 #endif 6795 #endif 6796 #endif 6797 6798 // post-pone all actions until stack is fully working 6799 if (hci_stack->state != HCI_STATE_WORKING) return false; 6800 6801 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6802 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6803 6804 // Phase 4: restore state 6805 6806 #ifdef ENABLE_LE_CENTRAL 6807 // re-start scanning 6808 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6809 hci_stack->le_scanning_active = true; 6810 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6811 if (hci_le_extended_advertising_supported()){ 6812 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6813 } else 6814 #endif 6815 { 6816 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6817 } 6818 return true; 6819 } 6820 #endif 6821 6822 #ifdef ENABLE_LE_CENTRAL 6823 // re-start connecting 6824 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6825 bd_addr_t null_addr; 6826 memset(null_addr, 0, 6); 6827 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6828 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6829 hci_send_le_create_connection(1, 0, null_addr); 6830 return true; 6831 } 6832 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6833 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6834 switch(hci_stack->le_periodic_sync_request){ 6835 case LE_CONNECTING_DIRECT: 6836 case LE_CONNECTING_WHITELIST: 6837 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6838 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6839 hci_stack->le_periodic_sync_options, 6840 hci_stack->le_periodic_sync_advertising_sid, 6841 hci_stack->le_periodic_sync_advertiser_address_type, 6842 hci_stack->le_periodic_sync_advertiser_address, 6843 hci_stack->le_periodic_sync_skip, 6844 hci_stack->le_periodic_sync_timeout, 6845 hci_stack->le_periodic_sync_cte_type); 6846 return true; 6847 default: 6848 break; 6849 } 6850 } 6851 #endif 6852 #endif 6853 6854 #ifdef ENABLE_LE_PERIPHERAL 6855 // re-start advertising 6856 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6857 // check if advertisements should be enabled given 6858 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6859 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6860 6861 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6862 if (hci_le_extended_advertising_supported()){ 6863 const uint8_t advertising_handles[] = { 0 }; 6864 const uint16_t durations[] = { 0 }; 6865 const uint16_t max_events[] = { 0 }; 6866 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6867 } else 6868 #endif 6869 { 6870 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6871 } 6872 return true; 6873 } 6874 6875 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6876 if (hci_le_extended_advertising_supported()) { 6877 btstack_linked_list_iterator_t it; 6878 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6879 while (btstack_linked_list_iterator_has_next(&it)) { 6880 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6881 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6882 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6883 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6884 const uint16_t durations[] = { advertising_set->enable_timeout }; 6885 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6886 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6887 return true; 6888 } 6889 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6890 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6891 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6892 uint8_t enable = 1; 6893 if (advertising_set->periodic_include_adi){ 6894 enable |= 2; 6895 } 6896 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6897 return true; 6898 } 6899 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6900 } 6901 } 6902 #endif 6903 #endif 6904 6905 return false; 6906 } 6907 6908 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6909 static bool hci_run_iso_tasks(void){ 6910 btstack_linked_list_iterator_t it; 6911 6912 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6913 return false; 6914 } 6915 6916 // BIG 6917 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6918 while (btstack_linked_list_iterator_has_next(&it)){ 6919 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6920 switch (big->state){ 6921 case LE_AUDIO_BIG_STATE_CREATE: 6922 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6923 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6924 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6925 hci_send_cmd(&hci_le_create_big, 6926 big->params->big_handle, 6927 big->params->advertising_handle, 6928 big->params->num_bis, 6929 big->params->sdu_interval_us, 6930 big->params->max_sdu, 6931 big->params->max_transport_latency_ms, 6932 big->params->rtn, 6933 big->params->phy, 6934 big->params->packing, 6935 big->params->framing, 6936 big->params->encryption, 6937 big->params->broadcast_code); 6938 return true; 6939 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6940 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6941 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 6942 return true; 6943 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6944 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6945 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6946 return true; 6947 case LE_AUDIO_BIG_STATE_TERMINATE: 6948 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6949 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6950 return true; 6951 default: 6952 break; 6953 } 6954 } 6955 6956 // BIG Sync 6957 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6958 while (btstack_linked_list_iterator_has_next(&it)){ 6959 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6960 switch (big_sync->state){ 6961 case LE_AUDIO_BIG_STATE_CREATE: 6962 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6963 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6964 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6965 hci_send_cmd(&hci_le_big_create_sync, 6966 big_sync->params->big_handle, 6967 big_sync->params->sync_handle, 6968 big_sync->params->encryption, 6969 big_sync->params->broadcast_code, 6970 big_sync->params->mse, 6971 big_sync->params->big_sync_timeout_10ms, 6972 big_sync->params->num_bis, 6973 big_sync->params->bis_indices); 6974 return true; 6975 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6976 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6977 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 6978 return true; 6979 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6980 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6981 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6982 return true; 6983 case LE_AUDIO_BIG_STATE_TERMINATE: 6984 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6985 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6986 return true; 6987 default: 6988 break; 6989 } 6990 } 6991 6992 // CIG 6993 bool cig_active; 6994 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6995 while (btstack_linked_list_iterator_has_next(&it)) { 6996 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 6997 uint8_t i; 6998 // Set CIG Parameters 6999 uint8_t cis_id[MAX_NR_CIS]; 7000 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7001 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7002 uint8_t phy_c_to_p[MAX_NR_CIS]; 7003 uint8_t phy_p_to_c[MAX_NR_CIS]; 7004 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7005 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7006 switch (cig->state) { 7007 case LE_AUDIO_CIG_STATE_CREATE: 7008 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7009 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7010 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7011 le_audio_cig_params_t * params = cig->params; 7012 for (i = 0; i < params->num_cis; i++) { 7013 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7014 cis_id[i] = cis_params->cis_id; 7015 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7016 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7017 phy_c_to_p[i] = cis_params->phy_c_to_p; 7018 phy_p_to_c[i] = cis_params->phy_p_to_c; 7019 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7020 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7021 } 7022 hci_send_cmd(&hci_le_set_cig_parameters, 7023 cig->cig_id, 7024 params->sdu_interval_c_to_p, 7025 params->sdu_interval_p_to_c, 7026 params->worst_case_sca, 7027 params->packing, 7028 params->framing, 7029 params->max_transport_latency_c_to_p, 7030 params->max_transport_latency_p_to_c, 7031 params->num_cis, 7032 cis_id, 7033 max_sdu_c_to_p, 7034 max_sdu_p_to_c, 7035 phy_c_to_p, 7036 phy_p_to_c, 7037 rtn_c_to_p, 7038 rtn_p_to_c 7039 ); 7040 return true; 7041 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7042 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7043 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7044 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7045 for (i=0;i<cig->num_cis;i++){ 7046 cig->cis_setup_active[i] = true; 7047 } 7048 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7049 return true; 7050 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7051 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7052 // find next path to setup 7053 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7054 if (cig->cis_established[cis_index] == false) { 7055 continue; 7056 } 7057 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7058 bool setup = true; 7059 if (cis_direction == 0){ 7060 // 0 - input - host to controller 7061 // we are central => central to peripheral 7062 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7063 } else { 7064 // 1 - output - controller to host 7065 // we are central => peripheral to central 7066 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7067 } 7068 if (setup){ 7069 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7070 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7071 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7072 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7073 return true; 7074 } 7075 cig->state_vars.next_cis++; 7076 } 7077 // emit done 7078 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7079 break; 7080 case LE_AUDIO_CIG_STATE_REMOVE: 7081 // check if CIG Active 7082 cig_active = false; 7083 for (i = 0; i < cig->num_cis; i++) { 7084 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7085 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7086 if (stream != NULL){ 7087 cig_active = true; 7088 break; 7089 } 7090 } 7091 } 7092 if (cig_active == false){ 7093 btstack_linked_list_iterator_remove(&it); 7094 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7095 return true; 7096 } 7097 default: 7098 break; 7099 } 7100 } 7101 7102 // CIS Accept/Reject/Setup ISO Path/Close 7103 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7104 while (btstack_linked_list_iterator_has_next(&it)) { 7105 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7106 hci_con_handle_t con_handle; 7107 switch (iso_stream->state){ 7108 case HCI_ISO_STREAM_W2_ACCEPT: 7109 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7110 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7111 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7112 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7113 return true; 7114 case HCI_ISO_STREAM_W2_REJECT: 7115 con_handle = iso_stream->cis_handle; 7116 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7117 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7118 hci_iso_stream_finalize(iso_stream); 7119 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7120 return true; 7121 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7122 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7123 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7124 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7125 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7126 break; 7127 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7128 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7129 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7130 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7131 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7132 break; 7133 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7134 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7135 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle); 7136 break; 7137 default: 7138 break; 7139 } 7140 } 7141 7142 return false; 7143 } 7144 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7145 #endif 7146 7147 static bool hci_run_general_pending_commands(void){ 7148 btstack_linked_item_t * it; 7149 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7150 hci_connection_t * connection = (hci_connection_t *) it; 7151 7152 switch(connection->state){ 7153 case SEND_CREATE_CONNECTION: 7154 switch(connection->address_type){ 7155 #ifdef ENABLE_CLASSIC 7156 case BD_ADDR_TYPE_ACL: 7157 log_info("sending hci_create_connection"); 7158 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7159 break; 7160 #endif 7161 default: 7162 #ifdef ENABLE_BLE 7163 #ifdef ENABLE_LE_CENTRAL 7164 log_info("sending hci_le_create_connection"); 7165 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7166 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7167 hci_send_le_create_connection(0, connection->address_type, connection->address); 7168 connection->state = SENT_CREATE_CONNECTION; 7169 #endif 7170 #endif 7171 break; 7172 } 7173 return true; 7174 7175 #ifdef ENABLE_CLASSIC 7176 case RECEIVED_CONNECTION_REQUEST: 7177 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7178 log_info("sending hci_accept_connection_request"); 7179 connection->state = ACCEPTED_CONNECTION_REQUEST; 7180 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7181 return true; 7182 } 7183 break; 7184 #endif 7185 case SEND_DISCONNECT: 7186 connection->state = SENT_DISCONNECT; 7187 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7188 return true; 7189 7190 default: 7191 break; 7192 } 7193 7194 // no further commands if connection is about to get shut down 7195 if (connection->state == SENT_DISCONNECT) continue; 7196 7197 #ifdef ENABLE_CLASSIC 7198 7199 // Handling link key request requires remote supported features 7200 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7201 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7202 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7203 7204 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7205 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7206 if (have_link_key && security_level_sufficient){ 7207 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7208 } else { 7209 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7210 } 7211 return true; 7212 } 7213 7214 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7215 log_info("denying to pin request"); 7216 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7217 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7218 return true; 7219 } 7220 7221 // security assessment requires remote features 7222 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7223 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7224 hci_ssp_assess_security_on_io_cap_request(connection); 7225 // 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 7226 } 7227 7228 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7229 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7230 // set authentication requirements: 7231 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7232 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7233 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7234 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7235 authreq |= 1; 7236 } 7237 bool bonding = hci_stack->bondable; 7238 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7239 // if we have received IO Cap Response, we're in responder role 7240 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7241 if (bonding && !remote_bonding){ 7242 log_info("Remote not bonding, dropping local flag"); 7243 bonding = false; 7244 } 7245 } 7246 if (bonding){ 7247 if (connection->bonding_flags & BONDING_DEDICATED){ 7248 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7249 } else { 7250 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7251 } 7252 } 7253 uint8_t have_oob_data = 0; 7254 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7255 if (connection->classic_oob_c_192 != NULL){ 7256 have_oob_data |= 1; 7257 } 7258 if (connection->classic_oob_c_256 != NULL){ 7259 have_oob_data |= 2; 7260 } 7261 #endif 7262 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7263 return true; 7264 } 7265 7266 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7267 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7268 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7269 return true; 7270 } 7271 7272 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7273 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7274 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7275 const uint8_t zero[16] = { 0 }; 7276 const uint8_t * r_192 = zero; 7277 const uint8_t * c_192 = zero; 7278 const uint8_t * r_256 = zero; 7279 const uint8_t * c_256 = zero; 7280 // verify P-256 OOB 7281 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7282 c_256 = connection->classic_oob_c_256; 7283 if (connection->classic_oob_r_256 != NULL) { 7284 r_256 = connection->classic_oob_r_256; 7285 } 7286 } 7287 // verify P-192 OOB 7288 if ((connection->classic_oob_c_192 != NULL)) { 7289 c_192 = connection->classic_oob_c_192; 7290 if (connection->classic_oob_r_192 != NULL) { 7291 r_192 = connection->classic_oob_r_192; 7292 } 7293 } 7294 7295 // assess security 7296 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7297 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7298 if (need_level_4 && !can_reach_level_4){ 7299 log_info("Level 4 required, but not possible -> abort"); 7300 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7301 // send oob negative reply 7302 c_256 = NULL; 7303 c_192 = NULL; 7304 } 7305 7306 // Reply 7307 if (c_256 != zero) { 7308 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7309 } else if (c_192 != zero){ 7310 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7311 } else { 7312 hci_stack->classic_oob_con_handle = connection->con_handle; 7313 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7314 } 7315 return true; 7316 } 7317 #endif 7318 7319 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7320 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7321 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7322 return true; 7323 } 7324 7325 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7326 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7327 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7328 return true; 7329 } 7330 7331 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7332 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7333 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7334 return true; 7335 } 7336 7337 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7338 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7339 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7340 connection->state = SENT_DISCONNECT; 7341 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7342 return true; 7343 } 7344 7345 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7346 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7347 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7348 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7349 return true; 7350 } 7351 7352 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7353 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7354 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7355 return true; 7356 } 7357 7358 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7359 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7360 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7361 return true; 7362 } 7363 7364 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7365 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7366 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7367 return true; 7368 } 7369 7370 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7371 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7372 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7373 return true; 7374 } 7375 7376 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7377 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7378 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7379 return true; 7380 } 7381 #endif 7382 7383 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7384 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7385 #ifdef ENABLE_CLASSIC 7386 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7387 #endif 7388 if (connection->state != SENT_DISCONNECT){ 7389 connection->state = SENT_DISCONNECT; 7390 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7391 return true; 7392 } 7393 } 7394 7395 #ifdef ENABLE_CLASSIC 7396 uint16_t sniff_min_interval; 7397 switch (connection->sniff_min_interval){ 7398 case 0: 7399 break; 7400 case 0xffff: 7401 connection->sniff_min_interval = 0; 7402 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7403 return true; 7404 default: 7405 sniff_min_interval = connection->sniff_min_interval; 7406 connection->sniff_min_interval = 0; 7407 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7408 return true; 7409 } 7410 7411 if (connection->sniff_subrating_max_latency != 0xffff){ 7412 uint16_t max_latency = connection->sniff_subrating_max_latency; 7413 connection->sniff_subrating_max_latency = 0; 7414 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7415 return true; 7416 } 7417 7418 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7419 uint8_t service_type = (uint8_t) connection->qos_service_type; 7420 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7421 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); 7422 return true; 7423 } 7424 7425 if (connection->request_role != HCI_ROLE_INVALID){ 7426 hci_role_t role = connection->request_role; 7427 connection->request_role = HCI_ROLE_INVALID; 7428 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7429 return true; 7430 } 7431 #endif 7432 7433 if (connection->gap_connection_tasks != 0){ 7434 #ifdef ENABLE_CLASSIC 7435 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7436 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7437 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7438 return true; 7439 } 7440 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7441 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7442 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7443 return true; 7444 } 7445 #endif 7446 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7447 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7448 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7449 return true; 7450 } 7451 #ifdef ENABLE_BLE 7452 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7453 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7454 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7455 return true; 7456 } 7457 #endif 7458 } 7459 7460 #ifdef ENABLE_BLE 7461 switch (connection->le_con_parameter_update_state){ 7462 // response to L2CAP CON PARAMETER UPDATE REQUEST 7463 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7464 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7465 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7466 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7467 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7468 return true; 7469 case CON_PARAMETER_UPDATE_REPLY: 7470 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7471 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7472 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7473 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7474 return true; 7475 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7476 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7477 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7478 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7479 return true; 7480 default: 7481 break; 7482 } 7483 if (connection->le_phy_update_all_phys != 0xffu){ 7484 uint8_t all_phys = connection->le_phy_update_all_phys; 7485 connection->le_phy_update_all_phys = 0xff; 7486 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); 7487 return true; 7488 } 7489 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7490 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7491 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7492 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7493 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7494 return true; 7495 } 7496 if (connection->le_past_advertising_handle != 0xff){ 7497 uint8_t advertising_handle = connection->le_past_advertising_handle; 7498 connection->le_past_advertising_handle = 0xff; 7499 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7500 return true; 7501 } 7502 #endif 7503 #endif 7504 } 7505 return false; 7506 } 7507 7508 static void hci_run(void){ 7509 7510 // stack state sub statemachines 7511 switch (hci_stack->state) { 7512 case HCI_STATE_INITIALIZING: 7513 hci_initializing_run(); 7514 break; 7515 case HCI_STATE_HALTING: 7516 hci_halting_run(); 7517 break; 7518 case HCI_STATE_FALLING_ASLEEP: 7519 hci_falling_asleep_run(); 7520 break; 7521 default: 7522 break; 7523 } 7524 7525 // allow to run after initialization to working transition 7526 if (hci_stack->state != HCI_STATE_WORKING){ 7527 return; 7528 } 7529 7530 bool done; 7531 7532 // send continuation fragments first, as they block the prepared packet buffer 7533 done = hci_run_acl_fragments(); 7534 if (done) return; 7535 7536 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7537 done = hci_run_iso_fragments(); 7538 if (done) return; 7539 #endif 7540 7541 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7542 // send host num completed packets next as they don't require num_cmd_packets > 0 7543 if (!hci_can_send_comand_packet_transport()) return; 7544 if (hci_stack->host_completed_packets){ 7545 hci_host_num_completed_packets(); 7546 return; 7547 } 7548 #endif 7549 7550 if (!hci_can_send_command_packet_now()) return; 7551 7552 // global/non-connection oriented commands 7553 7554 7555 #ifdef ENABLE_CLASSIC 7556 // general gap classic 7557 done = hci_run_general_gap_classic(); 7558 if (done) return; 7559 #endif 7560 7561 #ifdef ENABLE_BLE 7562 // general gap le 7563 done = hci_run_general_gap_le(); 7564 if (done) return; 7565 7566 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7567 // ISO related tasks, e.g. BIG create/terminate/sync 7568 done = hci_run_iso_tasks(); 7569 if (done) return; 7570 #endif 7571 #endif 7572 7573 // send pending HCI commands 7574 hci_run_general_pending_commands(); 7575 } 7576 7577 #ifdef ENABLE_CLASSIC 7578 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7579 // bits 6-9 are 'don't use' 7580 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7581 7582 // restrict packet types to local and remote supported 7583 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7584 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7585 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7586 } 7587 #endif 7588 7589 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7590 // house-keeping 7591 7592 #ifdef ENABLE_CLASSIC 7593 bd_addr_t addr; 7594 hci_connection_t * conn; 7595 #endif 7596 #ifdef ENABLE_LE_CENTRAL 7597 uint8_t initiator_filter_policy; 7598 #endif 7599 7600 uint16_t opcode = little_endian_read_16(packet, 0); 7601 switch (opcode) { 7602 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7603 hci_stack->loopback_mode = packet[3]; 7604 break; 7605 7606 #ifdef ENABLE_CLASSIC 7607 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7608 reverse_bd_addr(&packet[3], addr); 7609 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7610 7611 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7612 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7613 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7614 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7615 } 7616 7617 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7618 if (!conn) { 7619 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7620 if (!conn) { 7621 // notify client that alloc failed 7622 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7623 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7624 } 7625 conn->state = SEND_CREATE_CONNECTION; 7626 } 7627 7628 log_info("conn state %u", conn->state); 7629 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7630 switch (conn->state) { 7631 // if connection active exists 7632 case OPEN: 7633 // and OPEN, emit connection complete command 7634 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7635 // packet not sent to controller 7636 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7637 case RECEIVED_DISCONNECTION_COMPLETE: 7638 // create connection triggered in disconnect complete event, let's do it now 7639 break; 7640 case SEND_CREATE_CONNECTION: 7641 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7642 if (hci_classic_operation_active()){ 7643 return ERROR_CODE_SUCCESS; 7644 } 7645 #endif 7646 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7647 break; 7648 default: 7649 // otherwise, just ignore as it is already in the open process 7650 // packet not sent to controller 7651 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7652 } 7653 conn->state = SENT_CREATE_CONNECTION; 7654 7655 // track outgoing connection 7656 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7657 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7658 break; 7659 7660 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7661 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7662 if (conn == NULL) { 7663 // neither SCO nor ACL connection for con handle 7664 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7665 } else { 7666 uint16_t remote_supported_sco_packets; 7667 switch (conn->address_type){ 7668 case BD_ADDR_TYPE_ACL: 7669 // assert SCO connection does not exit 7670 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7671 return ERROR_CODE_COMMAND_DISALLOWED; 7672 } 7673 // cache remote sco packet types 7674 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7675 7676 // allocate connection struct 7677 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7678 HCI_ROLE_MASTER); 7679 if (!conn) { 7680 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7681 } 7682 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7683 break; 7684 case BD_ADDR_TYPE_SCO: 7685 // update of existing SCO connection 7686 break; 7687 default: 7688 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7689 } 7690 } 7691 7692 // conn refers to hci connection of type sco now 7693 7694 conn->state = SENT_CREATE_CONNECTION; 7695 7696 // track outgoing connection to handle command status with error 7697 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7698 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7699 7700 // setup_synchronous_connection? Voice setting at offset 22 7701 // TODO: compare to current setting if sco connection already active 7702 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7703 7704 // derive sco payload length from packet types 7705 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7706 break; 7707 7708 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7709 // get SCO connection 7710 reverse_bd_addr(&packet[3], addr); 7711 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7712 if (conn == NULL){ 7713 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7714 } 7715 7716 conn->state = ACCEPTED_CONNECTION_REQUEST; 7717 7718 // track outgoing connection to handle command status with error 7719 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7720 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7721 7722 // accept_synchronous_connection? Voice setting at offset 18 7723 // TODO: compare to current setting if sco connection already active 7724 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7725 7726 // derive sco payload length from packet types 7727 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7728 break; 7729 #endif 7730 7731 #ifdef ENABLE_BLE 7732 #ifdef ENABLE_LE_CENTRAL 7733 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7734 // white list used? 7735 initiator_filter_policy = packet[7]; 7736 switch (initiator_filter_policy) { 7737 case 0: 7738 // whitelist not used 7739 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7740 break; 7741 case 1: 7742 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7743 break; 7744 default: 7745 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7746 break; 7747 } 7748 // track outgoing connection 7749 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7750 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7751 break; 7752 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7753 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7754 // white list used? 7755 initiator_filter_policy = packet[3]; 7756 switch (initiator_filter_policy) { 7757 case 0: 7758 // whitelist not used 7759 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7760 break; 7761 case 1: 7762 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7763 break; 7764 default: 7765 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7766 break; 7767 } 7768 // track outgoing connection 7769 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7770 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7771 break; 7772 #endif 7773 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7774 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7775 break; 7776 #endif 7777 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7778 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7779 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7780 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7781 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7782 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7783 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7784 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7785 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7786 case HCI_OPCODE_HCI_LE_READ_PHY: 7787 case HCI_OPCODE_HCI_LE_SET_PHY: 7788 // conection handle is first command parameter 7789 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7790 break; 7791 #endif 7792 #endif /* ENABLE_BLE */ 7793 default: 7794 break; 7795 } 7796 7797 hci_stack->num_cmd_packets--; 7798 7799 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7800 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7801 if (err != 0){ 7802 return ERROR_CODE_HARDWARE_FAILURE; 7803 } 7804 return ERROR_CODE_SUCCESS; 7805 } 7806 7807 // disconnect because of security block 7808 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7809 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7810 if (!connection) return; 7811 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7812 } 7813 7814 7815 // Configure Secure Simple Pairing 7816 7817 #ifdef ENABLE_CLASSIC 7818 7819 // enable will enable SSP during init 7820 void gap_ssp_set_enable(int enable){ 7821 hci_stack->ssp_enable = enable; 7822 } 7823 7824 static int hci_local_ssp_activated(void){ 7825 return gap_ssp_supported() && hci_stack->ssp_enable; 7826 } 7827 7828 // if set, BTstack will respond to io capability request using authentication requirement 7829 void gap_ssp_set_io_capability(int io_capability){ 7830 hci_stack->ssp_io_capability = io_capability; 7831 } 7832 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7833 hci_stack->ssp_authentication_requirement = authentication_requirement; 7834 } 7835 7836 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7837 void gap_ssp_set_auto_accept(int auto_accept){ 7838 hci_stack->ssp_auto_accept = auto_accept; 7839 } 7840 7841 void gap_secure_connections_enable(bool enable){ 7842 hci_stack->secure_connections_enable = enable; 7843 } 7844 bool gap_secure_connections_active(void){ 7845 return hci_stack->secure_connections_active; 7846 } 7847 7848 #endif 7849 7850 // va_list part of hci_send_cmd 7851 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7852 if (!hci_can_send_command_packet_now()){ 7853 log_error("hci_send_cmd called but cannot send packet now"); 7854 return ERROR_CODE_COMMAND_DISALLOWED; 7855 } 7856 7857 // for HCI INITIALIZATION 7858 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7859 hci_stack->last_cmd_opcode = cmd->opcode; 7860 7861 hci_reserve_packet_buffer(); 7862 uint8_t * packet = hci_stack->hci_packet_buffer; 7863 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7864 uint8_t status = hci_send_cmd_packet(packet, size); 7865 7866 // release packet buffer on error or for synchronous transport implementations 7867 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7868 hci_release_packet_buffer(); 7869 } 7870 7871 return status; 7872 } 7873 7874 /** 7875 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7876 */ 7877 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7878 va_list argptr; 7879 va_start(argptr, cmd); 7880 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7881 va_end(argptr); 7882 return status; 7883 } 7884 7885 // Create various non-HCI events. 7886 // TODO: generalize, use table similar to hci_create_command 7887 7888 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7889 // dump packet 7890 if (dump) { 7891 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7892 } 7893 7894 // dispatch to all event handlers 7895 btstack_linked_list_iterator_t it; 7896 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7897 while (btstack_linked_list_iterator_has_next(&it)){ 7898 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7899 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7900 } 7901 } 7902 7903 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7904 if (!hci_stack->acl_packet_handler) return; 7905 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7906 } 7907 7908 #ifdef ENABLE_CLASSIC 7909 static void hci_notify_if_sco_can_send_now(void){ 7910 // notify SCO sender if waiting 7911 if (!hci_stack->sco_waiting_for_can_send_now) return; 7912 if (hci_can_send_sco_packet_now()){ 7913 hci_stack->sco_waiting_for_can_send_now = 0; 7914 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7915 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7916 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7917 } 7918 } 7919 7920 // parsing end emitting has been merged to reduce code size 7921 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7922 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7923 7924 uint8_t * eir_data; 7925 ad_context_t context; 7926 const uint8_t * name; 7927 uint8_t name_len; 7928 7929 if (size < 3) return; 7930 7931 int event_type = hci_event_packet_get_type(packet); 7932 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7933 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7934 7935 switch (event_type){ 7936 case HCI_EVENT_INQUIRY_RESULT: 7937 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7938 if (size != (3 + (num_responses * 14))) return; 7939 break; 7940 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7941 if (size != 257) return; 7942 if (num_responses != 1) return; 7943 break; 7944 default: 7945 return; 7946 } 7947 7948 // event[1] is set at the end 7949 int i; 7950 for (i=0; i<num_responses;i++){ 7951 memset(event, 0, sizeof(event)); 7952 event[0] = GAP_EVENT_INQUIRY_RESULT; 7953 uint8_t event_size = 27; // if name is not set by EIR 7954 7955 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7956 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7957 (void)memcpy(&event[9], 7958 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7959 3); // class of device 7960 (void)memcpy(&event[12], 7961 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7962 2); // clock offset 7963 7964 switch (event_type){ 7965 case HCI_EVENT_INQUIRY_RESULT: 7966 // 14,15,16,17 = 0, size 18 7967 break; 7968 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7969 event[14] = 1; 7970 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7971 // 16,17 = 0, size 18 7972 break; 7973 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7974 event[14] = 1; 7975 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7976 // EIR packets only contain a single inquiry response 7977 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7978 name = NULL; 7979 // Iterate over EIR data 7980 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7981 uint8_t data_type = ad_iterator_get_data_type(&context); 7982 uint8_t data_size = ad_iterator_get_data_len(&context); 7983 const uint8_t * data = ad_iterator_get_data(&context); 7984 // Prefer Complete Local Name over Shortened Local Name 7985 switch (data_type){ 7986 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7987 if (name) continue; 7988 /* fall through */ 7989 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7990 name = data; 7991 name_len = data_size; 7992 break; 7993 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7994 if (data_size != 8) break; 7995 event[16] = 1; 7996 memcpy(&event[17], data, 8); 7997 break; 7998 default: 7999 break; 8000 } 8001 } 8002 if (name){ 8003 event[25] = 1; 8004 // truncate name if needed 8005 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8006 event[26] = len; 8007 (void)memcpy(&event[27], name, len); 8008 event_size += len; 8009 } 8010 break; 8011 default: 8012 return; 8013 } 8014 event[1] = event_size - 2; 8015 hci_emit_event(event, event_size, 1); 8016 } 8017 } 8018 #endif 8019 8020 void hci_emit_state(void){ 8021 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8022 uint8_t event[3]; 8023 event[0] = BTSTACK_EVENT_STATE; 8024 event[1] = sizeof(event) - 2u; 8025 event[2] = hci_stack->state; 8026 hci_emit_event(event, sizeof(event), 1); 8027 } 8028 8029 #ifdef ENABLE_CLASSIC 8030 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8031 uint8_t event[13]; 8032 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8033 event[1] = sizeof(event) - 2; 8034 event[2] = status; 8035 little_endian_store_16(event, 3, con_handle); 8036 reverse_bd_addr(address, &event[5]); 8037 event[11] = 1; // ACL connection 8038 event[12] = 0; // encryption disabled 8039 hci_emit_event(event, sizeof(event), 1); 8040 } 8041 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8042 if (disable_l2cap_timeouts) return; 8043 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8044 uint8_t event[4]; 8045 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8046 event[1] = sizeof(event) - 2; 8047 little_endian_store_16(event, 2, conn->con_handle); 8048 hci_emit_event(event, sizeof(event), 1); 8049 } 8050 #endif 8051 8052 #ifdef ENABLE_BLE 8053 #ifdef ENABLE_LE_CENTRAL 8054 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){ 8055 uint8_t hci_event[21]; 8056 hci_event[0] = HCI_EVENT_LE_META; 8057 hci_event[1] = sizeof(hci_event) - 2u; 8058 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8059 hci_event[3] = status; 8060 little_endian_store_16(hci_event, 4, con_handle); 8061 hci_event[6] = 0; // TODO: role 8062 hci_event[7] = address_type; 8063 reverse_bd_addr(address, &hci_event[8]); 8064 little_endian_store_16(hci_event, 14, 0); // interval 8065 little_endian_store_16(hci_event, 16, 0); // latency 8066 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8067 hci_event[20] = 0; // master clock accuracy 8068 hci_emit_event(hci_event, sizeof(hci_event), 1); 8069 // emit GAP event, too 8070 uint8_t gap_event[36]; 8071 hci_create_gap_connection_complete_event(hci_event, gap_event); 8072 hci_emit_event(gap_event, sizeof(gap_event), 1); 8073 } 8074 #endif 8075 #endif 8076 8077 static void hci_emit_transport_packet_sent(void){ 8078 // notify upper stack that it might be possible to send again 8079 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8080 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 8081 } 8082 8083 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8084 uint8_t event[6]; 8085 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8086 event[1] = sizeof(event) - 2u; 8087 event[2] = 0; // status = OK 8088 little_endian_store_16(event, 3, con_handle); 8089 event[5] = reason; 8090 hci_emit_event(event, sizeof(event), 1); 8091 } 8092 8093 static void hci_emit_nr_connections_changed(void){ 8094 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8095 uint8_t event[3]; 8096 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8097 event[1] = sizeof(event) - 2u; 8098 event[2] = nr_hci_connections(); 8099 hci_emit_event(event, sizeof(event), 1); 8100 } 8101 8102 static void hci_emit_hci_open_failed(void){ 8103 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8104 uint8_t event[2]; 8105 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8106 event[1] = sizeof(event) - 2u; 8107 hci_emit_event(event, sizeof(event), 1); 8108 } 8109 8110 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8111 log_info("hci_emit_dedicated_bonding_result %u ", status); 8112 uint8_t event[9]; 8113 int pos = 0; 8114 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8115 event[pos++] = sizeof(event) - 2u; 8116 event[pos++] = status; 8117 reverse_bd_addr(address, &event[pos]); 8118 hci_emit_event(event, sizeof(event), 1); 8119 } 8120 8121 8122 #ifdef ENABLE_CLASSIC 8123 8124 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8125 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8126 uint8_t event[5]; 8127 int pos = 0; 8128 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8129 event[pos++] = sizeof(event) - 2; 8130 little_endian_store_16(event, 2, con_handle); 8131 pos += 2; 8132 event[pos++] = level; 8133 hci_emit_event(event, sizeof(event), 1); 8134 } 8135 8136 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8137 if (!connection) return LEVEL_0; 8138 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8139 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8140 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8141 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8142 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8143 // LEVEL 4 always requires 128 bit encrytion key size 8144 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8145 security_level = LEVEL_3; 8146 } 8147 return security_level; 8148 } 8149 8150 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8151 uint8_t event[4]; 8152 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8153 event[1] = sizeof(event) - 2; 8154 event[2] = discoverable; 8155 event[3] = connectable; 8156 hci_emit_event(event, sizeof(event), 1); 8157 } 8158 8159 // query if remote side supports eSCO 8160 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8161 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8162 if (!connection) return false; 8163 return (connection->remote_supported_features[0] & 1) != 0; 8164 } 8165 8166 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8167 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8168 if (!connection) return 0; 8169 return connection->remote_supported_sco_packets; 8170 } 8171 8172 static bool hci_ssp_supported(hci_connection_t * connection){ 8173 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8174 return (connection->bonding_flags & mask) == mask; 8175 } 8176 8177 // query if remote side supports SSP 8178 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8179 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8180 if (!connection) return false; 8181 return hci_ssp_supported(connection) ? 1 : 0; 8182 } 8183 8184 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8185 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8186 } 8187 8188 /** 8189 * Check if remote supported features query has completed 8190 */ 8191 bool hci_remote_features_available(hci_con_handle_t handle){ 8192 hci_connection_t * connection = hci_connection_for_handle(handle); 8193 if (!connection) return false; 8194 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8195 } 8196 8197 /** 8198 * Trigger remote supported features query 8199 */ 8200 8201 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8202 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8203 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8204 } 8205 } 8206 8207 void hci_remote_features_query(hci_con_handle_t con_handle){ 8208 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8209 if (!connection) return; 8210 hci_trigger_remote_features_for_connection(connection); 8211 hci_run(); 8212 } 8213 8214 // GAP API 8215 /** 8216 * @bbrief enable/disable bonding. default is enabled 8217 * @praram enabled 8218 */ 8219 void gap_set_bondable_mode(int enable){ 8220 hci_stack->bondable = enable ? 1 : 0; 8221 } 8222 /** 8223 * @brief Get bondable mode. 8224 * @return 1 if bondable 8225 */ 8226 int gap_get_bondable_mode(void){ 8227 return hci_stack->bondable; 8228 } 8229 8230 /** 8231 * @brief map link keys to security levels 8232 */ 8233 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8234 switch (link_key_type){ 8235 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8236 return LEVEL_4; 8237 case COMBINATION_KEY: 8238 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8239 return LEVEL_3; 8240 default: 8241 return LEVEL_2; 8242 } 8243 } 8244 8245 /** 8246 * @brief map link keys to secure connection yes/no 8247 */ 8248 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8249 switch (link_key_type){ 8250 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8251 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8252 return true; 8253 default: 8254 return false; 8255 } 8256 } 8257 8258 /** 8259 * @brief map link keys to authenticated 8260 */ 8261 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8262 switch (link_key_type){ 8263 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8264 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8265 return true; 8266 default: 8267 return false; 8268 } 8269 } 8270 8271 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8272 log_info("gap_mitm_protection_required_for_security_level %u", level); 8273 return level > LEVEL_2; 8274 } 8275 8276 /** 8277 * @brief get current security level 8278 */ 8279 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8280 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8281 if (!connection) return LEVEL_0; 8282 return gap_security_level_for_connection(connection); 8283 } 8284 8285 /** 8286 * @brief request connection to device to 8287 * @result GAP_AUTHENTICATION_RESULT 8288 */ 8289 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8290 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8291 if (!connection){ 8292 hci_emit_security_level(con_handle, LEVEL_0); 8293 return; 8294 } 8295 8296 btstack_assert(hci_is_le_connection(connection) == false); 8297 8298 // 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) 8299 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8300 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8301 requested_level = LEVEL_4; 8302 } 8303 8304 gap_security_level_t current_level = gap_security_level(con_handle); 8305 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8306 requested_level, connection->requested_security_level, current_level); 8307 8308 // authentication active if authentication request was sent or planned level > 0 8309 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8310 if (authentication_active){ 8311 // authentication already active 8312 if (connection->requested_security_level < requested_level){ 8313 // increase requested level as new level is higher 8314 // TODO: handle re-authentication when done 8315 connection->requested_security_level = requested_level; 8316 } 8317 } else { 8318 // no request active, notify if security sufficient 8319 if (requested_level <= current_level){ 8320 hci_emit_security_level(con_handle, current_level); 8321 return; 8322 } 8323 8324 // store request 8325 connection->requested_security_level = requested_level; 8326 8327 // start to authenticate connection 8328 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8329 8330 // request remote features if not already active, also trigger hci_run 8331 hci_remote_features_query(con_handle); 8332 } 8333 } 8334 8335 /** 8336 * @brief start dedicated bonding with device. disconnect after bonding 8337 * @param device 8338 * @param request MITM protection 8339 * @result GAP_DEDICATED_BONDING_COMPLETE 8340 */ 8341 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8342 8343 // create connection state machine 8344 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8345 8346 if (!connection){ 8347 return BTSTACK_MEMORY_ALLOC_FAILED; 8348 } 8349 8350 // delete link key 8351 gap_drop_link_key_for_bd_addr(device); 8352 8353 // configure LEVEL_2/3, dedicated bonding 8354 connection->state = SEND_CREATE_CONNECTION; 8355 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8356 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8357 connection->bonding_flags = BONDING_DEDICATED; 8358 8359 hci_run(); 8360 8361 return 0; 8362 } 8363 8364 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8365 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8366 if (connection == NULL){ 8367 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8368 } 8369 if (defer){ 8370 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8371 } else { 8372 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8373 // trigger disconnect 8374 hci_run(); 8375 } 8376 return ERROR_CODE_SUCCESS; 8377 } 8378 8379 void gap_set_local_name(const char * local_name){ 8380 hci_stack->local_name = local_name; 8381 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8382 // also update EIR if not set by user 8383 if (hci_stack->eir_data == NULL){ 8384 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8385 } 8386 hci_run(); 8387 } 8388 #endif 8389 8390 8391 #ifdef ENABLE_BLE 8392 8393 #ifdef ENABLE_LE_CENTRAL 8394 void gap_start_scan(void){ 8395 hci_stack->le_scanning_enabled = true; 8396 hci_run(); 8397 } 8398 8399 void gap_stop_scan(void){ 8400 hci_stack->le_scanning_enabled = false; 8401 hci_run(); 8402 } 8403 8404 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8405 hci_stack->le_scan_type = scan_type; 8406 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8407 hci_stack->le_scan_interval = scan_interval; 8408 hci_stack->le_scan_window = scan_window; 8409 hci_stack->le_scanning_param_update = true; 8410 hci_run(); 8411 } 8412 8413 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8414 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8415 } 8416 8417 void gap_set_scan_duplicate_filter(bool enabled){ 8418 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8419 } 8420 8421 void gap_set_scan_phys(uint8_t phys){ 8422 // LE Coded and LE 1M PHY 8423 hci_stack->le_scan_phys = phys & 0x05; 8424 } 8425 8426 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8427 // disallow le connection if outgoing already active 8428 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8429 log_error("le connect already active"); 8430 return ERROR_CODE_COMMAND_DISALLOWED; 8431 } 8432 8433 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8434 if (conn == NULL) { 8435 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8436 if (conn == false){ 8437 // alloc failed 8438 log_info("gap_connect: failed to alloc hci_connection_t"); 8439 return BTSTACK_MEMORY_ALLOC_FAILED; 8440 } 8441 } else { 8442 switch (conn->state) { 8443 case RECEIVED_DISCONNECTION_COMPLETE: 8444 // connection was just disconnected, reset state and allow re-connect 8445 conn->role = HCI_ROLE_MASTER; 8446 break; 8447 default: 8448 return ERROR_CODE_COMMAND_DISALLOWED; 8449 } 8450 } 8451 8452 // set le connecting state 8453 if (hci_is_le_connection_type(addr_type)){ 8454 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8455 } 8456 8457 // trigger connect 8458 log_info("gap_connect: send create connection next"); 8459 conn->state = SEND_CREATE_CONNECTION; 8460 hci_run(); 8461 return ERROR_CODE_SUCCESS; 8462 } 8463 8464 // @assumption: only a single outgoing LE Connection exists 8465 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8466 btstack_linked_item_t *it; 8467 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8468 hci_connection_t * conn = (hci_connection_t *) it; 8469 if (hci_is_le_connection(conn)){ 8470 switch (conn->state){ 8471 case SEND_CREATE_CONNECTION: 8472 case SENT_CREATE_CONNECTION: 8473 return conn; 8474 default: 8475 break; 8476 }; 8477 } 8478 } 8479 return NULL; 8480 } 8481 8482 uint8_t gap_connect_cancel(void){ 8483 hci_connection_t * conn; 8484 switch (hci_stack->le_connecting_request){ 8485 case LE_CONNECTING_IDLE: 8486 break; 8487 case LE_CONNECTING_WHITELIST: 8488 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8489 hci_run(); 8490 break; 8491 case LE_CONNECTING_DIRECT: 8492 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8493 conn = gap_get_outgoing_le_connection(); 8494 if (conn == NULL){ 8495 hci_run(); 8496 } else { 8497 switch (conn->state){ 8498 case SEND_CREATE_CONNECTION: 8499 // skip sending create connection and emit event instead 8500 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8501 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8502 btstack_memory_hci_connection_free( conn ); 8503 break; 8504 case SENT_CREATE_CONNECTION: 8505 // let hci_run_general_gap_le cancel outgoing connection 8506 hci_run(); 8507 break; 8508 default: 8509 break; 8510 } 8511 } 8512 break; 8513 default: 8514 btstack_unreachable(); 8515 break; 8516 } 8517 return ERROR_CODE_SUCCESS; 8518 } 8519 8520 /** 8521 * @brief Set connection parameters for outgoing connections 8522 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8523 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8524 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8525 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8526 * @param conn_latency, default: 4 8527 * @param supervision_timeout (unit: 10ms), default: 720 ms 8528 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8529 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8530 */ 8531 8532 void gap_set_connection_phys(uint8_t phys){ 8533 // LE Coded, LE 1M, LE 2M PHY 8534 hci_stack->le_connection_phys = phys & 7; 8535 } 8536 8537 #endif 8538 8539 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8540 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8541 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8542 hci_stack->le_connection_scan_interval = conn_scan_interval; 8543 hci_stack->le_connection_scan_window = conn_scan_window; 8544 hci_stack->le_connection_interval_min = conn_interval_min; 8545 hci_stack->le_connection_interval_max = conn_interval_max; 8546 hci_stack->le_connection_latency = conn_latency; 8547 hci_stack->le_supervision_timeout = supervision_timeout; 8548 hci_stack->le_minimum_ce_length = min_ce_length; 8549 hci_stack->le_maximum_ce_length = max_ce_length; 8550 } 8551 8552 /** 8553 * @brief Updates the connection parameters for a given LE connection 8554 * @param handle 8555 * @param conn_interval_min (unit: 1.25ms) 8556 * @param conn_interval_max (unit: 1.25ms) 8557 * @param conn_latency 8558 * @param supervision_timeout (unit: 10ms) 8559 * @return 0 if ok 8560 */ 8561 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8562 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8563 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8564 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8565 connection->le_conn_interval_min = conn_interval_min; 8566 connection->le_conn_interval_max = conn_interval_max; 8567 connection->le_conn_latency = conn_latency; 8568 connection->le_supervision_timeout = supervision_timeout; 8569 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8570 hci_run(); 8571 return 0; 8572 } 8573 8574 /** 8575 * @brief Request an update of the connection parameter for a given LE connection 8576 * @param handle 8577 * @param conn_interval_min (unit: 1.25ms) 8578 * @param conn_interval_max (unit: 1.25ms) 8579 * @param conn_latency 8580 * @param supervision_timeout (unit: 10ms) 8581 * @return 0 if ok 8582 */ 8583 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8584 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8585 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8586 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8587 connection->le_conn_interval_min = conn_interval_min; 8588 connection->le_conn_interval_max = conn_interval_max; 8589 connection->le_conn_latency = conn_latency; 8590 connection->le_supervision_timeout = supervision_timeout; 8591 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8592 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8593 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8594 return 0; 8595 } 8596 8597 #ifdef ENABLE_LE_PERIPHERAL 8598 8599 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8600 static void hci_assert_advertisement_set_0_ready(void){ 8601 // force advertising set creation for legacy LE Advertising 8602 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8603 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8604 } 8605 } 8606 #endif 8607 8608 /** 8609 * @brief Set Advertisement Data 8610 * @param advertising_data_length 8611 * @param advertising_data (max 31 octets) 8612 * @note data is not copied, pointer has to stay valid 8613 */ 8614 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8615 hci_stack->le_advertisements_data_len = advertising_data_length; 8616 hci_stack->le_advertisements_data = advertising_data; 8617 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8618 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8619 hci_assert_advertisement_set_0_ready(); 8620 #endif 8621 hci_run(); 8622 } 8623 8624 /** 8625 * @brief Set Scan Response Data 8626 * @param advertising_data_length 8627 * @param advertising_data (max 31 octets) 8628 * @note data is not copied, pointer has to stay valid 8629 */ 8630 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8631 hci_stack->le_scan_response_data_len = scan_response_data_length; 8632 hci_stack->le_scan_response_data = scan_response_data; 8633 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8634 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8635 hci_assert_advertisement_set_0_ready(); 8636 #endif 8637 hci_run(); 8638 } 8639 8640 /** 8641 * @brief Set Advertisement Parameters 8642 * @param adv_int_min 8643 * @param adv_int_max 8644 * @param adv_type 8645 * @param direct_address_type 8646 * @param direct_address 8647 * @param channel_map 8648 * @param filter_policy 8649 * 8650 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8651 */ 8652 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8653 uint8_t direct_address_typ, bd_addr_t direct_address, 8654 uint8_t channel_map, uint8_t filter_policy) { 8655 8656 hci_stack->le_advertisements_interval_min = adv_int_min; 8657 hci_stack->le_advertisements_interval_max = adv_int_max; 8658 hci_stack->le_advertisements_type = adv_type; 8659 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8660 hci_stack->le_advertisements_channel_map = channel_map; 8661 hci_stack->le_advertisements_filter_policy = filter_policy; 8662 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8663 6); 8664 8665 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8666 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8667 hci_run(); 8668 } 8669 8670 /** 8671 * @brief Enable/Disable Advertisements 8672 * @param enabled 8673 */ 8674 void gap_advertisements_enable(int enabled){ 8675 if (enabled == 0){ 8676 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8677 } else { 8678 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8679 } 8680 hci_update_advertisements_enabled_for_current_roles(); 8681 hci_run(); 8682 } 8683 8684 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8685 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8686 btstack_linked_list_iterator_t it; 8687 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8688 while (btstack_linked_list_iterator_has_next(&it)){ 8689 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8690 if ( item->advertising_handle == advertising_handle ) { 8691 return item; 8692 } 8693 } 8694 return NULL; 8695 } 8696 8697 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8698 hci_stack->le_resolvable_private_address_update_s = update_s; 8699 hci_run(); 8700 return ERROR_CODE_SUCCESS; 8701 } 8702 8703 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8704 // find free advertisement handle 8705 uint8_t advertisement_handle; 8706 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8707 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8708 } 8709 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8710 // clear 8711 memset(storage, 0, sizeof(le_advertising_set_t)); 8712 // copy params 8713 storage->advertising_handle = advertisement_handle; 8714 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8715 // add to list 8716 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8717 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8718 *out_advertising_handle = advertisement_handle; 8719 // set tasks and start 8720 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8721 hci_run(); 8722 return ERROR_CODE_SUCCESS; 8723 } 8724 8725 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8726 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8727 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8728 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8729 // set tasks and start 8730 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8731 hci_run(); 8732 return ERROR_CODE_SUCCESS; 8733 } 8734 8735 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8736 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8737 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8738 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8739 return ERROR_CODE_SUCCESS; 8740 } 8741 8742 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8743 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8744 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8745 memcpy(advertising_set->random_address, random_address, 6); 8746 // set tasks and start 8747 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8748 hci_run(); 8749 return ERROR_CODE_SUCCESS; 8750 } 8751 8752 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8753 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8754 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8755 advertising_set->adv_data = advertising_data; 8756 advertising_set->adv_data_len = advertising_data_length; 8757 // set tasks and start 8758 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8759 hci_run(); 8760 return ERROR_CODE_SUCCESS; 8761 } 8762 8763 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){ 8764 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8765 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8766 advertising_set->scan_data = scan_response_data; 8767 advertising_set->scan_data_len = scan_response_data_length; 8768 // set tasks and start 8769 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8770 hci_run(); 8771 return ERROR_CODE_SUCCESS; 8772 } 8773 8774 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8775 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8776 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8777 advertising_set->enable_timeout = timeout; 8778 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8779 // set tasks and start 8780 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8781 hci_run(); 8782 return ERROR_CODE_SUCCESS; 8783 } 8784 8785 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8786 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8787 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8788 // set tasks and start 8789 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8790 hci_run(); 8791 return ERROR_CODE_SUCCESS; 8792 } 8793 8794 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8795 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8796 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8797 // set tasks and start 8798 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8799 hci_run(); 8800 return ERROR_CODE_SUCCESS; 8801 } 8802 8803 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8804 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8805 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8806 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8807 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8808 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8809 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8810 // set tasks and start 8811 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8812 hci_run(); 8813 return ERROR_CODE_SUCCESS; 8814 } 8815 8816 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8817 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8818 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8819 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8820 return ERROR_CODE_SUCCESS; 8821 } 8822 8823 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8824 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8825 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8826 advertising_set->periodic_data = periodic_data; 8827 advertising_set->periodic_data_len = periodic_data_length; 8828 // set tasks and start 8829 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8830 hci_run(); 8831 return ERROR_CODE_SUCCESS; 8832 } 8833 8834 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8835 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8836 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8837 // set tasks and start 8838 advertising_set->periodic_include_adi = include_adi; 8839 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8840 hci_run(); 8841 return ERROR_CODE_SUCCESS; 8842 } 8843 8844 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8845 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8846 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8847 // set tasks and start 8848 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8849 hci_run(); 8850 return ERROR_CODE_SUCCESS; 8851 } 8852 8853 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8854 hci_stack->le_past_mode = mode; 8855 hci_stack->le_past_skip = skip; 8856 hci_stack->le_past_sync_timeout = sync_timeout; 8857 hci_stack->le_past_cte_type = cte_type; 8858 hci_stack->le_past_set_default_params = true; 8859 hci_run(); 8860 return ERROR_CODE_SUCCESS; 8861 } 8862 8863 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8864 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8865 if (hci_connection == NULL){ 8866 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8867 } 8868 hci_connection->le_past_sync_handle = sync_handle; 8869 hci_connection->le_past_service_data = service_data; 8870 hci_run(); 8871 return ERROR_CODE_SUCCESS; 8872 } 8873 8874 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8875 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8876 if (hci_connection == NULL){ 8877 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8878 } 8879 hci_connection->le_past_advertising_handle = advertising_handle; 8880 hci_connection->le_past_service_data = service_data; 8881 hci_run(); 8882 return ERROR_CODE_SUCCESS; 8883 } 8884 8885 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8886 8887 #endif 8888 8889 #endif 8890 8891 void hci_le_set_own_address_type(uint8_t own_address_type){ 8892 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8893 if (own_address_type == hci_stack->le_own_addr_type) return; 8894 hci_stack->le_own_addr_type = own_address_type; 8895 8896 #ifdef ENABLE_LE_PERIPHERAL 8897 // update advertisement parameters, too 8898 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8899 hci_run(); 8900 #endif 8901 #ifdef ENABLE_LE_CENTRAL 8902 // note: we don't update scan parameters or modify ongoing connection attempts 8903 #endif 8904 } 8905 8906 void hci_le_random_address_set(const bd_addr_t random_address){ 8907 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 8908 memcpy(hci_stack->le_random_address, random_address, 6); 8909 hci_stack->le_random_address_set = true; 8910 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 8911 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8912 if (hci_le_extended_advertising_supported()){ 8913 hci_assert_advertisement_set_0_ready(); 8914 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8915 } 8916 #endif 8917 hci_run(); 8918 } 8919 8920 #endif 8921 8922 uint8_t gap_disconnect(hci_con_handle_t handle){ 8923 hci_connection_t * conn = hci_connection_for_handle(handle); 8924 if (!conn){ 8925 hci_emit_disconnection_complete(handle, 0); 8926 return 0; 8927 } 8928 // ignore if already disconnected 8929 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8930 return 0; 8931 } 8932 conn->state = SEND_DISCONNECT; 8933 hci_run(); 8934 return 0; 8935 } 8936 8937 int gap_read_rssi(hci_con_handle_t con_handle){ 8938 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8939 if (hci_connection == NULL) return 0; 8940 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8941 hci_run(); 8942 return 1; 8943 } 8944 8945 /** 8946 * @brief Get connection type 8947 * @param con_handle 8948 * @result connection_type 8949 */ 8950 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8951 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8952 if (!conn) return GAP_CONNECTION_INVALID; 8953 switch (conn->address_type){ 8954 case BD_ADDR_TYPE_LE_PUBLIC: 8955 case BD_ADDR_TYPE_LE_RANDOM: 8956 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8957 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8958 return GAP_CONNECTION_LE; 8959 case BD_ADDR_TYPE_SCO: 8960 return GAP_CONNECTION_SCO; 8961 case BD_ADDR_TYPE_ACL: 8962 return GAP_CONNECTION_ACL; 8963 default: 8964 return GAP_CONNECTION_INVALID; 8965 } 8966 } 8967 8968 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8969 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8970 if (!conn) return HCI_ROLE_INVALID; 8971 return (hci_role_t) conn->role; 8972 } 8973 8974 8975 #ifdef ENABLE_CLASSIC 8976 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8977 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8978 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8979 conn->request_role = role; 8980 hci_run(); 8981 return ERROR_CODE_SUCCESS; 8982 } 8983 #endif 8984 8985 #ifdef ENABLE_BLE 8986 8987 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint16_t phy_options){ 8988 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8989 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8990 8991 conn->le_phy_update_all_phys = all_phys; 8992 conn->le_phy_update_tx_phys = tx_phys; 8993 conn->le_phy_update_rx_phys = rx_phys; 8994 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8995 8996 hci_run(); 8997 8998 return 0; 8999 } 9000 9001 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9002 9003 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9004 // incorrect configuration: 9005 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9006 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9007 btstack_assert(false); 9008 #endif 9009 9010 // check if already in list 9011 btstack_linked_list_iterator_t it; 9012 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9013 while (btstack_linked_list_iterator_has_next(&it)) { 9014 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9015 if (entry->address_type != address_type) { 9016 continue; 9017 } 9018 if (memcmp(entry->address, address, 6) != 0) { 9019 continue; 9020 } 9021 9022 // if already on controller: 9023 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9024 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9025 // drop remove request 9026 entry->state = LE_WHITELIST_ON_CONTROLLER; 9027 return ERROR_CODE_SUCCESS; 9028 } else { 9029 // disallow as already on controller 9030 return ERROR_CODE_COMMAND_DISALLOWED; 9031 } 9032 } 9033 9034 // assume scheduled to add 9035 return ERROR_CODE_COMMAND_DISALLOWED; 9036 } 9037 9038 // alloc and add to list 9039 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9040 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9041 entry->address_type = address_type; 9042 (void)memcpy(entry->address, address, 6); 9043 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9044 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9045 return ERROR_CODE_SUCCESS; 9046 } 9047 9048 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9049 btstack_linked_list_iterator_t it; 9050 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9051 while (btstack_linked_list_iterator_has_next(&it)){ 9052 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9053 if (entry->address_type != address_type) { 9054 continue; 9055 } 9056 if (memcmp(entry->address, address, 6) != 0) { 9057 continue; 9058 } 9059 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9060 // remove from controller if already present 9061 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9062 } else { 9063 // directly remove entry from whitelist 9064 btstack_linked_list_iterator_remove(&it); 9065 btstack_memory_whitelist_entry_free(entry); 9066 } 9067 return ERROR_CODE_SUCCESS; 9068 } 9069 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9070 } 9071 9072 static void hci_whitelist_clear(void){ 9073 btstack_linked_list_iterator_t it; 9074 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9075 while (btstack_linked_list_iterator_has_next(&it)){ 9076 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9077 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9078 // remove from controller if already present 9079 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9080 continue; 9081 } 9082 // directly remove entry from whitelist 9083 btstack_linked_list_iterator_remove(&it); 9084 btstack_memory_whitelist_entry_free(entry); 9085 } 9086 } 9087 9088 /** 9089 * @brief Clear Whitelist 9090 * @return 0 if ok 9091 */ 9092 uint8_t gap_whitelist_clear(void){ 9093 hci_whitelist_clear(); 9094 hci_run(); 9095 return ERROR_CODE_SUCCESS; 9096 } 9097 9098 /** 9099 * @brief Add Device to Whitelist 9100 * @param address_typ 9101 * @param address 9102 * @return 0 if ok 9103 */ 9104 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9105 uint8_t status = hci_whitelist_add(address_type, address); 9106 if (status){ 9107 return status; 9108 } 9109 hci_run(); 9110 return ERROR_CODE_SUCCESS; 9111 } 9112 9113 /** 9114 * @brief Remove Device from Whitelist 9115 * @param address_typ 9116 * @param address 9117 * @return 0 if ok 9118 */ 9119 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9120 uint8_t status = hci_whitelist_remove(address_type, address); 9121 if (status){ 9122 return status; 9123 } 9124 hci_run(); 9125 return ERROR_CODE_SUCCESS; 9126 } 9127 9128 #ifdef ENABLE_LE_CENTRAL 9129 /** 9130 * @brief Connect with Whitelist 9131 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9132 * @return - if ok 9133 */ 9134 uint8_t gap_connect_with_whitelist(void){ 9135 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9136 return ERROR_CODE_COMMAND_DISALLOWED; 9137 } 9138 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9139 hci_run(); 9140 return ERROR_CODE_SUCCESS; 9141 } 9142 9143 /** 9144 * @brief Auto Connection Establishment - Start Connecting to device 9145 * @param address_typ 9146 * @param address 9147 * @return 0 if ok 9148 */ 9149 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9150 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9151 return ERROR_CODE_COMMAND_DISALLOWED; 9152 } 9153 9154 uint8_t status = hci_whitelist_add(address_type, address); 9155 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9156 return status; 9157 } 9158 9159 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9160 9161 hci_run(); 9162 return ERROR_CODE_SUCCESS; 9163 } 9164 9165 /** 9166 * @brief Auto Connection Establishment - Stop Connecting to device 9167 * @param address_typ 9168 * @param address 9169 * @return 0 if ok 9170 */ 9171 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9172 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9173 return ERROR_CODE_COMMAND_DISALLOWED; 9174 } 9175 9176 hci_whitelist_remove(address_type, address); 9177 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9178 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9179 } 9180 hci_run(); 9181 return 0; 9182 } 9183 9184 /** 9185 * @brief Auto Connection Establishment - Stop everything 9186 * @note Convenience function to stop all active auto connection attempts 9187 */ 9188 uint8_t gap_auto_connection_stop_all(void){ 9189 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9190 return ERROR_CODE_COMMAND_DISALLOWED; 9191 } 9192 hci_whitelist_clear(); 9193 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9194 hci_run(); 9195 return ERROR_CODE_SUCCESS; 9196 } 9197 9198 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9199 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9200 if (!conn) return 0; 9201 return conn->le_connection_interval; 9202 } 9203 #endif 9204 #endif 9205 9206 #ifdef ENABLE_CLASSIC 9207 /** 9208 * @brief Set Extended Inquiry Response data 9209 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9210 * @note has to be done before stack starts up 9211 */ 9212 void gap_set_extended_inquiry_response(const uint8_t * data){ 9213 hci_stack->eir_data = data; 9214 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9215 hci_run(); 9216 } 9217 9218 /** 9219 * @brief Start GAP Classic Inquiry 9220 * @param duration in 1.28s units 9221 * @return 0 if ok 9222 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9223 */ 9224 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9225 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9226 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9227 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9228 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9229 } 9230 hci_stack->inquiry_state = duration_in_1280ms_units; 9231 hci_stack->inquiry_max_period_length = 0; 9232 hci_stack->inquiry_min_period_length = 0; 9233 hci_run(); 9234 return 0; 9235 } 9236 9237 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9238 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9239 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9240 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9241 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9242 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9243 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9244 9245 hci_stack->inquiry_state = duration; 9246 hci_stack->inquiry_max_period_length = max_period_length; 9247 hci_stack->inquiry_min_period_length = min_period_length; 9248 hci_run(); 9249 return 0; 9250 } 9251 9252 /** 9253 * @brief Stop GAP Classic Inquiry 9254 * @return 0 if ok 9255 */ 9256 int gap_inquiry_stop(void){ 9257 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9258 // emit inquiry complete event, before it even started 9259 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9260 hci_emit_event(event, sizeof(event), 1); 9261 return 0; 9262 } 9263 switch (hci_stack->inquiry_state){ 9264 case GAP_INQUIRY_STATE_ACTIVE: 9265 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9266 hci_run(); 9267 return ERROR_CODE_SUCCESS; 9268 case GAP_INQUIRY_STATE_PERIODIC: 9269 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9270 hci_run(); 9271 return ERROR_CODE_SUCCESS; 9272 default: 9273 return ERROR_CODE_COMMAND_DISALLOWED; 9274 } 9275 } 9276 9277 void gap_inquiry_set_lap(uint32_t lap){ 9278 hci_stack->inquiry_lap = lap; 9279 } 9280 9281 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9282 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9283 hci_stack->inquiry_scan_window = inquiry_scan_window; 9284 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9285 hci_run(); 9286 } 9287 9288 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9289 { 9290 hci_stack->inquiry_tx_power_level = tx_power; 9291 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9292 hci_run(); 9293 } 9294 9295 9296 /** 9297 * @brief Remote Name Request 9298 * @param addr 9299 * @param page_scan_repetition_mode 9300 * @param clock_offset only used when bit 15 is set 9301 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9302 */ 9303 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9304 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9305 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9306 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9307 hci_stack->remote_name_clock_offset = clock_offset; 9308 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9309 hci_run(); 9310 return 0; 9311 } 9312 9313 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9314 hci_stack->gap_pairing_state = state; 9315 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9316 hci_run(); 9317 return 0; 9318 } 9319 9320 /** 9321 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9322 * @param addr 9323 * @param pin_data 9324 * @param pin_len 9325 * @return 0 if ok 9326 */ 9327 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9328 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9329 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9330 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9331 hci_stack->gap_pairing_pin_len = pin_len; 9332 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9333 } 9334 9335 /** 9336 * @brief Legacy Pairing Pin Code Response 9337 * @param addr 9338 * @param pin 9339 * @return 0 if ok 9340 */ 9341 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9342 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9343 } 9344 9345 /** 9346 * @brief Abort Legacy Pairing 9347 * @param addr 9348 * @param pin 9349 * @return 0 if ok 9350 */ 9351 int gap_pin_code_negative(bd_addr_t addr){ 9352 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9353 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9354 } 9355 9356 /** 9357 * @brief SSP Passkey Response 9358 * @param addr 9359 * @param passkey 9360 * @return 0 if ok 9361 */ 9362 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9363 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9364 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9365 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9366 } 9367 9368 /** 9369 * @brief Abort SSP Passkey Entry/Pairing 9370 * @param addr 9371 * @param pin 9372 * @return 0 if ok 9373 */ 9374 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9375 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9376 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9377 } 9378 9379 /** 9380 * @brief Accept SSP Numeric Comparison 9381 * @param addr 9382 * @param passkey 9383 * @return 0 if ok 9384 */ 9385 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9386 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9387 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9388 } 9389 9390 /** 9391 * @brief Abort SSP Numeric Comparison/Pairing 9392 * @param addr 9393 * @param pin 9394 * @return 0 if ok 9395 */ 9396 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9397 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9398 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9399 } 9400 9401 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9402 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9403 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9404 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9405 connectionSetAuthenticationFlags(conn, flag); 9406 hci_run(); 9407 return ERROR_CODE_SUCCESS; 9408 } 9409 #endif 9410 9411 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9412 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9413 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9414 } 9415 9416 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9417 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9418 } 9419 #endif 9420 9421 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9422 /** 9423 * @brief Report Remote OOB Data 9424 * @param bd_addr 9425 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9426 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9427 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9428 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9429 */ 9430 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){ 9431 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9432 if (connection == NULL) { 9433 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9434 } 9435 connection->classic_oob_c_192 = c_192; 9436 connection->classic_oob_r_192 = r_192; 9437 9438 // ignore P-256 if not supported by us 9439 if (hci_stack->secure_connections_active){ 9440 connection->classic_oob_c_256 = c_256; 9441 connection->classic_oob_r_256 = r_256; 9442 } 9443 9444 return ERROR_CODE_SUCCESS; 9445 } 9446 /** 9447 * @brief Generate new OOB data 9448 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9449 */ 9450 void gap_ssp_generate_oob_data(void){ 9451 hci_stack->classic_read_local_oob_data = true; 9452 hci_run(); 9453 } 9454 9455 #endif 9456 9457 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9458 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9459 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9460 if (connection == NULL) { 9461 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9462 } 9463 9464 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9465 connection->link_key_type = type; 9466 9467 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9468 } 9469 9470 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9471 /** 9472 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9473 * @param inquiry_mode see bluetooth_defines.h 9474 */ 9475 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9476 hci_stack->inquiry_mode = inquiry_mode; 9477 } 9478 9479 /** 9480 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9481 */ 9482 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9483 hci_stack->sco_voice_setting = voice_setting; 9484 } 9485 9486 /** 9487 * @brief Get SCO Voice Setting 9488 * @return current voice setting 9489 */ 9490 uint16_t hci_get_sco_voice_setting(void){ 9491 return hci_stack->sco_voice_setting; 9492 } 9493 9494 static int hci_have_usb_transport(void){ 9495 if (!hci_stack->hci_transport) return 0; 9496 const char * transport_name = hci_stack->hci_transport->name; 9497 if (!transport_name) return 0; 9498 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9499 } 9500 9501 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9502 uint16_t sco_packet_length = 0; 9503 9504 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9505 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9506 int multiplier; 9507 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9508 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9509 multiplier = 2; 9510 } else { 9511 multiplier = 1; 9512 } 9513 #endif 9514 9515 #ifdef ENABLE_SCO_OVER_HCI 9516 if (hci_have_usb_transport()){ 9517 // see Core Spec for H2 USB Transfer. 9518 // 3 byte SCO header + 24 bytes per connection 9519 // @note multiple sco connections not supported currently 9520 sco_packet_length = 3 + 24 * multiplier; 9521 } else { 9522 // 3 byte SCO header + SCO packet length over the air 9523 sco_packet_length = 3 + payload_size * multiplier; 9524 // assert that it still fits inside an SCO buffer 9525 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9526 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9527 } 9528 } 9529 #endif 9530 #ifdef HAVE_SCO_TRANSPORT 9531 // 3 byte SCO header + SCO packet length over the air 9532 sco_packet_length = 3 + payload_size * multiplier; 9533 // assert that it still fits inside an SCO buffer 9534 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9535 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9536 } 9537 #endif 9538 return sco_packet_length; 9539 } 9540 9541 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9542 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9543 if (connection != NULL){ 9544 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9545 } 9546 return 0; 9547 } 9548 9549 uint16_t hci_get_sco_packet_length(void){ 9550 btstack_linked_list_iterator_t it; 9551 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9552 while (btstack_linked_list_iterator_has_next(&it)){ 9553 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9554 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9555 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9556 } 9557 } 9558 return 0; 9559 } 9560 9561 /** 9562 * @brief Sets the master/slave policy 9563 * @param policy (0: attempt to become master, 1: let connecting device decide) 9564 */ 9565 void hci_set_master_slave_policy(uint8_t policy){ 9566 hci_stack->master_slave_policy = policy; 9567 } 9568 9569 #endif 9570 9571 HCI_STATE hci_get_state(void){ 9572 return hci_stack->state; 9573 } 9574 9575 #ifdef ENABLE_CLASSIC 9576 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9577 hci_stack->gap_classic_accept_callback = accept_callback; 9578 } 9579 #endif 9580 9581 /** 9582 * @brief Set callback for Bluetooth Hardware Error 9583 */ 9584 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9585 hci_stack->hardware_error_callback = fn; 9586 } 9587 9588 void hci_disconnect_all(void){ 9589 btstack_linked_list_iterator_t it; 9590 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9591 while (btstack_linked_list_iterator_has_next(&it)){ 9592 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9593 if (con->state == SENT_DISCONNECT) continue; 9594 con->state = SEND_DISCONNECT; 9595 } 9596 hci_run(); 9597 } 9598 9599 uint16_t hci_get_manufacturer(void){ 9600 return hci_stack->manufacturer; 9601 } 9602 9603 #ifdef ENABLE_BLE 9604 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9605 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9606 if (!hci_con) return NULL; 9607 return &hci_con->sm_connection; 9608 } 9609 9610 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9611 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9612 #endif 9613 9614 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9615 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9616 if (hci_connection == NULL) return 0; 9617 if (hci_is_le_connection(hci_connection)){ 9618 #ifdef ENABLE_BLE 9619 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9620 if (sm_conn->sm_connection_encrypted != 0u) { 9621 return sm_conn->sm_actual_encryption_key_size; 9622 } 9623 #endif 9624 } else { 9625 #ifdef ENABLE_CLASSIC 9626 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9627 return hci_connection->encryption_key_size; 9628 } 9629 #endif 9630 } 9631 return 0; 9632 } 9633 9634 bool gap_authenticated(hci_con_handle_t con_handle){ 9635 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9636 if (hci_connection == NULL) return false; 9637 9638 switch (hci_connection->address_type){ 9639 #ifdef ENABLE_BLE 9640 case BD_ADDR_TYPE_LE_PUBLIC: 9641 case BD_ADDR_TYPE_LE_RANDOM: 9642 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9643 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9644 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9645 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9646 #endif 9647 #ifdef ENABLE_CLASSIC 9648 case BD_ADDR_TYPE_SCO: 9649 case BD_ADDR_TYPE_ACL: 9650 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9651 #endif 9652 default: 9653 return false; 9654 } 9655 } 9656 9657 bool gap_secure_connection(hci_con_handle_t con_handle){ 9658 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9659 if (hci_connection == NULL) return 0; 9660 9661 switch (hci_connection->address_type){ 9662 #ifdef ENABLE_BLE 9663 case BD_ADDR_TYPE_LE_PUBLIC: 9664 case BD_ADDR_TYPE_LE_RANDOM: 9665 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9666 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9667 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9668 return hci_connection->sm_connection.sm_connection_sc; 9669 #endif 9670 #ifdef ENABLE_CLASSIC 9671 case BD_ADDR_TYPE_SCO: 9672 case BD_ADDR_TYPE_ACL: 9673 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9674 #endif 9675 default: 9676 return false; 9677 } 9678 } 9679 9680 bool gap_bonded(hci_con_handle_t con_handle){ 9681 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9682 if (hci_connection == NULL) return 0; 9683 9684 #ifdef ENABLE_CLASSIC 9685 link_key_t link_key; 9686 link_key_type_t link_key_type; 9687 #endif 9688 switch (hci_connection->address_type){ 9689 #ifdef ENABLE_BLE 9690 case BD_ADDR_TYPE_LE_PUBLIC: 9691 case BD_ADDR_TYPE_LE_RANDOM: 9692 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9693 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9694 return hci_connection->sm_connection.sm_le_db_index >= 0; 9695 #endif 9696 #ifdef ENABLE_CLASSIC 9697 case BD_ADDR_TYPE_SCO: 9698 case BD_ADDR_TYPE_ACL: 9699 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9700 #endif 9701 default: 9702 return false; 9703 } 9704 } 9705 9706 #ifdef ENABLE_BLE 9707 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9708 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9709 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9710 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9711 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9712 return sm_conn->sm_connection_authorization_state; 9713 } 9714 #endif 9715 9716 #ifdef ENABLE_CLASSIC 9717 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){ 9718 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9719 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9720 conn->sniff_min_interval = sniff_min_interval; 9721 conn->sniff_max_interval = sniff_max_interval; 9722 conn->sniff_attempt = sniff_attempt; 9723 conn->sniff_timeout = sniff_timeout; 9724 hci_run(); 9725 return 0; 9726 } 9727 9728 /** 9729 * @brief Exit Sniff mode 9730 * @param con_handle 9731 @ @return 0 if ok 9732 */ 9733 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9734 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9735 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9736 conn->sniff_min_interval = 0xffff; 9737 hci_run(); 9738 return 0; 9739 } 9740 9741 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){ 9742 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9743 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9744 conn->sniff_subrating_max_latency = max_latency; 9745 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9746 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9747 hci_run(); 9748 return ERROR_CODE_SUCCESS; 9749 } 9750 9751 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){ 9752 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9753 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9754 conn->qos_service_type = service_type; 9755 conn->qos_token_rate = token_rate; 9756 conn->qos_peak_bandwidth = peak_bandwidth; 9757 conn->qos_latency = latency; 9758 conn->qos_delay_variation = delay_variation; 9759 hci_run(); 9760 return ERROR_CODE_SUCCESS; 9761 } 9762 9763 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9764 hci_stack->new_page_scan_interval = page_scan_interval; 9765 hci_stack->new_page_scan_window = page_scan_window; 9766 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9767 hci_run(); 9768 } 9769 9770 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9771 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9772 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9773 hci_run(); 9774 } 9775 9776 void gap_set_page_timeout(uint16_t page_timeout){ 9777 hci_stack->page_timeout = page_timeout; 9778 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9779 hci_run(); 9780 } 9781 9782 #endif 9783 9784 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9785 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9786 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9787 if (le_device_db_index >= le_device_db_max_count()) return; 9788 uint8_t offset = le_device_db_index >> 3; 9789 uint8_t mask = 1 << (le_device_db_index & 7); 9790 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9791 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9792 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9793 // note: go back to remove entries, otherwise, a remove + add will skip the add 9794 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9795 } 9796 } 9797 9798 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9799 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9800 if (le_device_db_index >= le_device_db_max_count()) return; 9801 uint8_t offset = le_device_db_index >> 3; 9802 uint8_t mask = 1 << (le_device_db_index & 7); 9803 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9804 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9805 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9806 } 9807 } 9808 9809 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9810 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9811 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9812 } 9813 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9814 // restart le resolving list update 9815 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9816 } 9817 return ERROR_CODE_SUCCESS; 9818 } 9819 9820 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9821 hci_stack->le_privacy_mode = privacy_mode; 9822 } 9823 #endif 9824 9825 #ifdef ENABLE_BLE 9826 #ifdef ENABLE_LE_CENTRAL 9827 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9828 9829 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9830 9831 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9832 // incorrect configuration: 9833 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9834 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9835 btstack_assert(false); 9836 #endif 9837 9838 // check if already in list 9839 btstack_linked_list_iterator_t it; 9840 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9841 while (btstack_linked_list_iterator_has_next(&it)) { 9842 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9843 if (entry->sid != advertising_sid) { 9844 continue; 9845 } 9846 if (entry->address_type != address_type) { 9847 continue; 9848 } 9849 if (memcmp(entry->address, address, 6) != 0) { 9850 continue; 9851 } 9852 // disallow if already scheduled to add 9853 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9854 return ERROR_CODE_COMMAND_DISALLOWED; 9855 } 9856 // still on controller, but scheduled to remove -> re-add 9857 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9858 return ERROR_CODE_SUCCESS; 9859 } 9860 // alloc and add to list 9861 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9862 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9863 entry->sid = advertising_sid; 9864 entry->address_type = address_type; 9865 (void)memcpy(entry->address, address, 6); 9866 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9867 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9868 return ERROR_CODE_SUCCESS; 9869 } 9870 9871 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9872 btstack_linked_list_iterator_t it; 9873 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9874 while (btstack_linked_list_iterator_has_next(&it)){ 9875 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9876 if (entry->sid != advertising_sid) { 9877 continue; 9878 } 9879 if (entry->address_type != address_type) { 9880 continue; 9881 } 9882 if (memcmp(entry->address, address, 6) != 0) { 9883 continue; 9884 } 9885 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9886 // remove from controller if already present 9887 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9888 } else { 9889 // directly remove entry from whitelist 9890 btstack_linked_list_iterator_remove(&it); 9891 btstack_memory_periodic_advertiser_list_entry_free(entry); 9892 } 9893 return ERROR_CODE_SUCCESS; 9894 } 9895 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9896 } 9897 9898 static void hci_periodic_advertiser_list_clear(void){ 9899 btstack_linked_list_iterator_t it; 9900 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9901 while (btstack_linked_list_iterator_has_next(&it)){ 9902 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9903 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9904 // remove from controller if already present 9905 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9906 continue; 9907 } 9908 // directly remove entry from whitelist 9909 btstack_linked_list_iterator_remove(&it); 9910 btstack_memory_periodic_advertiser_list_entry_free(entry); 9911 } 9912 } 9913 9914 uint8_t gap_periodic_advertiser_list_clear(void){ 9915 hci_periodic_advertiser_list_clear(); 9916 hci_run(); 9917 return ERROR_CODE_SUCCESS; 9918 } 9919 9920 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9921 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9922 if (status){ 9923 return status; 9924 } 9925 hci_run(); 9926 return ERROR_CODE_SUCCESS; 9927 } 9928 9929 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9930 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9931 if (status){ 9932 return status; 9933 } 9934 hci_run(); 9935 return ERROR_CODE_SUCCESS; 9936 } 9937 9938 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9939 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9940 // abort if already active 9941 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9942 return ERROR_CODE_COMMAND_DISALLOWED; 9943 } 9944 // store request 9945 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9946 hci_stack->le_periodic_sync_options = options; 9947 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9948 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9949 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9950 hci_stack->le_periodic_sync_skip = skip; 9951 hci_stack->le_periodic_sync_timeout = sync_timeout; 9952 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9953 9954 hci_run(); 9955 return ERROR_CODE_SUCCESS; 9956 } 9957 9958 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9959 // abort if not requested 9960 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9961 return ERROR_CODE_COMMAND_DISALLOWED; 9962 } 9963 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9964 hci_run(); 9965 return ERROR_CODE_SUCCESS; 9966 } 9967 9968 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9969 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9970 return ERROR_CODE_COMMAND_DISALLOWED; 9971 } 9972 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9973 hci_run(); 9974 return ERROR_CODE_SUCCESS; 9975 } 9976 9977 #endif 9978 #endif 9979 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9980 static hci_iso_stream_t * 9981 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9982 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9983 if (iso_stream != NULL){ 9984 iso_stream->iso_type = iso_type; 9985 iso_stream->state = state; 9986 iso_stream->group_id = group_id; 9987 iso_stream->stream_id = stream_id; 9988 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9989 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9990 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9991 } 9992 return iso_stream; 9993 } 9994 9995 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9996 btstack_linked_list_iterator_t it; 9997 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 9998 while (btstack_linked_list_iterator_has_next(&it)){ 9999 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10000 if (iso_stream->cis_handle == con_handle ) { 10001 return iso_stream; 10002 } 10003 } 10004 return NULL; 10005 } 10006 10007 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10008 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10009 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10010 btstack_memory_hci_iso_stream_free(iso_stream); 10011 } 10012 10013 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10014 btstack_linked_list_iterator_t it; 10015 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10016 while (btstack_linked_list_iterator_has_next(&it)){ 10017 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10018 if ((iso_stream->group_id == group_id) && 10019 (iso_stream->iso_type == iso_type)){ 10020 btstack_linked_list_iterator_remove(&it); 10021 btstack_memory_hci_iso_stream_free(iso_stream); 10022 } 10023 } 10024 } 10025 10026 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10027 btstack_linked_list_iterator_t it; 10028 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10029 while (btstack_linked_list_iterator_has_next(&it)){ 10030 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10031 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10032 (iso_stream->group_id == group_id)){ 10033 btstack_linked_list_iterator_remove(&it); 10034 btstack_memory_hci_iso_stream_free(iso_stream); 10035 } 10036 } 10037 } 10038 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10039 btstack_linked_list_iterator_t it; 10040 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10041 while (btstack_linked_list_iterator_has_next(&it)){ 10042 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10043 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10044 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10045 } 10046 } 10047 } 10048 10049 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10050 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10051 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10052 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10053 return (sdu_len_offset + 2 + sdu_len) == size; 10054 } 10055 10056 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10057 if (iso_stream == NULL){ 10058 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10059 return; 10060 } 10061 10062 if (hci_stack->iso_packet_handler == NULL) { 10063 return; 10064 } 10065 10066 // parse header 10067 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10068 uint16_t data_total_length = little_endian_read_16(packet, 2); 10069 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10070 10071 // assert packet is complete 10072 if ((data_total_length + 4u) != size){ 10073 return; 10074 } 10075 10076 if ((pb_flag & 0x01) == 0){ 10077 if (pb_flag == 0x02){ 10078 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10079 if (hci_iso_sdu_complete(packet, size)) { 10080 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10081 } 10082 } else { 10083 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10084 if (size > sizeof(iso_stream->reassembly_buffer)){ 10085 return; 10086 } 10087 memcpy(iso_stream->reassembly_buffer, packet, size); 10088 // fix pb_flag 10089 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10090 iso_stream->reassembly_pos = size; 10091 } 10092 } else { 10093 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10094 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10095 if (ts_flag != 0){ 10096 return; 10097 } 10098 // append fragment 10099 if (iso_stream->reassembly_pos == 0){ 10100 return; 10101 } 10102 10103 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10104 // reset reassembly buffer 10105 iso_stream->reassembly_pos = 0; 10106 return; 10107 } 10108 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10109 iso_stream->reassembly_pos += data_total_length; 10110 10111 // deliver if last fragment and SDU complete 10112 if (pb_flag == 0x03){ 10113 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10114 // fix data_total_length 10115 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10116 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10117 } 10118 // reset reassembly buffer 10119 iso_stream->reassembly_pos = 0; 10120 } 10121 } 10122 } 10123 10124 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10125 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10126 uint16_t pos = 0; 10127 event[pos++] = HCI_EVENT_META_GAP; 10128 event[pos++] = 4 + (2 * big->num_bis); 10129 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10130 event[pos++] = status; 10131 event[pos++] = big->big_handle; 10132 event[pos++] = big->num_bis; 10133 uint8_t i; 10134 for (i=0;i<big->num_bis;i++){ 10135 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10136 pos += 2; 10137 } 10138 hci_emit_event(event, pos, 0); 10139 } 10140 10141 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10142 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10143 uint16_t pos = 0; 10144 event[pos++] = HCI_EVENT_META_GAP; 10145 event[pos++] = 4 + (2 * cig->num_cis); 10146 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10147 event[pos++] = status; 10148 event[pos++] = cig->cig_id; 10149 event[pos++] = cig->num_cis; 10150 uint8_t i; 10151 for (i=0;i<cig->num_cis;i++){ 10152 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10153 pos += 2; 10154 } 10155 hci_emit_event(event, pos, 0); 10156 } 10157 10158 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10159 uint16_t pos = 0; 10160 event[pos++] = HCI_EVENT_META_GAP; 10161 event[pos++] = 8; 10162 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10163 event[pos++] = status; 10164 event[pos++] = iso_stream->group_id; 10165 event[pos++] = iso_stream->stream_id; 10166 little_endian_store_16(event, pos, iso_stream->cis_handle); 10167 pos += 2; 10168 little_endian_store_16(event, pos, iso_stream->acl_handle); 10169 pos += 2; 10170 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10171 pos += 2; 10172 event[pos++] = iso_stream->number_of_subevents; 10173 event[pos++] = iso_stream->burst_number_c_to_p; 10174 event[pos++] = iso_stream->burst_number_p_to_c; 10175 event[pos++] = iso_stream->flush_timeout_c_to_p; 10176 event[pos++] = iso_stream->flush_timeout_p_to_c; 10177 return pos; 10178 } 10179 10180 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10181 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10182 // cache data before finalizing struct 10183 uint8_t event [17]; 10184 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10185 btstack_assert(pos <= sizeof(event)); 10186 if (status != ERROR_CODE_SUCCESS){ 10187 hci_iso_stream_finalize(iso_stream); 10188 } 10189 hci_emit_event(event, pos, 0); 10190 } 10191 10192 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10193 uint8_t event [4]; 10194 uint16_t pos = 0; 10195 event[pos++] = HCI_EVENT_META_GAP; 10196 event[pos++] = 2; 10197 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10198 event[pos++] = big->big_handle; 10199 hci_emit_event(event, pos, 0); 10200 } 10201 10202 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10203 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10204 uint16_t pos = 0; 10205 event[pos++] = HCI_EVENT_META_GAP; 10206 event[pos++] = 4; 10207 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10208 event[pos++] = status; 10209 event[pos++] = big_sync->big_handle; 10210 event[pos++] = big_sync->num_bis; 10211 uint8_t i; 10212 for (i=0;i<big_sync->num_bis;i++){ 10213 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10214 pos += 2; 10215 } 10216 hci_emit_event(event, pos, 0); 10217 } 10218 10219 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10220 uint8_t event [4]; 10221 uint16_t pos = 0; 10222 event[pos++] = HCI_EVENT_META_GAP; 10223 event[pos++] = 2; 10224 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10225 event[pos++] = big_handle; 10226 hci_emit_event(event, pos, 0); 10227 } 10228 10229 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10230 uint8_t event[6]; 10231 uint16_t pos = 0; 10232 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10233 event[pos++] = sizeof(event) - 2; 10234 event[pos++] = big->big_handle; 10235 event[pos++] = bis_index; 10236 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10237 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10238 } 10239 10240 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10241 uint8_t event[4]; 10242 uint16_t pos = 0; 10243 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10244 event[pos++] = sizeof(event) - 2; 10245 little_endian_store_16(event, pos, cis_con_handle); 10246 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10247 } 10248 10249 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10250 btstack_linked_list_iterator_t it; 10251 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10252 while (btstack_linked_list_iterator_has_next(&it)){ 10253 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10254 if ( big->big_handle == big_handle ) { 10255 return big; 10256 } 10257 } 10258 return NULL; 10259 } 10260 10261 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10262 btstack_linked_list_iterator_t it; 10263 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10264 while (btstack_linked_list_iterator_has_next(&it)){ 10265 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10266 if ( big_sync->big_handle == big_handle ) { 10267 return big_sync; 10268 } 10269 } 10270 return NULL; 10271 } 10272 10273 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10274 hci_stack->iso_packets_to_queue = num_packets; 10275 } 10276 10277 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10278 btstack_linked_list_iterator_t it; 10279 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10280 while (btstack_linked_list_iterator_has_next(&it)){ 10281 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10282 if ( cig->cig_id == cig_id ) { 10283 return cig; 10284 } 10285 } 10286 return NULL; 10287 } 10288 10289 static void hci_iso_notify_can_send_now(void){ 10290 10291 // BIG 10292 10293 btstack_linked_list_iterator_t it; 10294 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10295 while (btstack_linked_list_iterator_has_next(&it)){ 10296 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10297 // track number completed packet timestamps 10298 if (big->num_completed_timestamp_current_valid){ 10299 big->num_completed_timestamp_current_valid = false; 10300 if (big->num_completed_timestamp_previous_valid){ 10301 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10302 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10303 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10304 big->num_completed_timestamp_previous_ms); 10305 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10306 // to catch up, skip packet on all BIS 10307 uint8_t i; 10308 for (i=0;i<big->num_bis;i++){ 10309 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10310 if (iso_stream){ 10311 iso_stream->num_packets_to_skip++; 10312 } 10313 } 10314 } 10315 } 10316 big->num_completed_timestamp_previous_valid = true; 10317 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10318 } 10319 10320 if (big->can_send_now_requested){ 10321 // check if no outgoing iso packets pending and no can send now have to be emitted 10322 uint8_t i; 10323 bool can_send = true; 10324 uint8_t num_iso_queued_minimum = 0; 10325 for (i=0;i<big->num_bis;i++){ 10326 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10327 if (iso_stream == NULL) continue; 10328 // handle case where individual ISO packet was sent too late: 10329 // for each additionally queued packet, a new one needs to get skipped 10330 if (i==0){ 10331 num_iso_queued_minimum = iso_stream->num_packets_sent; 10332 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10333 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10334 iso_stream->num_packets_to_skip += num_packets_to_skip; 10335 iso_stream->num_packets_sent -= num_packets_to_skip; 10336 } 10337 // check if we can send now 10338 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10339 can_send = false; 10340 break; 10341 } 10342 } 10343 if (can_send){ 10344 // propagate can send now to individual streams 10345 big->can_send_now_requested = false; 10346 for (i=0;i<big->num_bis;i++){ 10347 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10348 iso_stream->emit_ready_to_send = true; 10349 } 10350 } 10351 } 10352 } 10353 10354 if (hci_stack->hci_packet_buffer_reserved) return; 10355 10356 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10357 while (btstack_linked_list_iterator_has_next(&it)){ 10358 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10359 // report bis ready 10360 uint8_t i; 10361 for (i=0;i<big->num_bis;i++){ 10362 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10363 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10364 iso_stream->emit_ready_to_send = false; 10365 hci_emit_bis_can_send_now(big, i); 10366 break; 10367 } 10368 } 10369 } 10370 10371 // CIS 10372 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10373 while (btstack_linked_list_iterator_has_next(&it)) { 10374 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10375 if ((iso_stream->can_send_now_requested) && 10376 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10377 iso_stream->can_send_now_requested = false; 10378 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10379 } 10380 } 10381 } 10382 10383 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10384 // make big handle unique and usuable for big and big sync 10385 if (hci_big_for_handle(big_handle) != NULL){ 10386 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10387 } 10388 if (hci_big_sync_for_handle(big_handle) != NULL){ 10389 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10390 } 10391 if (num_bis == 0){ 10392 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10393 } 10394 if (num_bis > MAX_NR_BIS){ 10395 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10396 } 10397 10398 // reserve ISO Streams 10399 uint8_t i; 10400 uint8_t status = ERROR_CODE_SUCCESS; 10401 for (i=0;i<num_bis;i++){ 10402 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10403 if (iso_stream == NULL) { 10404 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10405 break; 10406 } 10407 } 10408 10409 // free structs on error 10410 if (status != ERROR_CODE_SUCCESS){ 10411 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10412 } 10413 10414 return status; 10415 } 10416 10417 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10418 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10419 if (status != ERROR_CODE_SUCCESS){ 10420 return status; 10421 } 10422 10423 le_audio_big_t * big = storage; 10424 big->big_handle = big_params->big_handle; 10425 big->params = big_params; 10426 big->state = LE_AUDIO_BIG_STATE_CREATE; 10427 big->num_bis = big_params->num_bis; 10428 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10429 10430 hci_run(); 10431 10432 return ERROR_CODE_SUCCESS; 10433 } 10434 10435 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10436 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10437 if (status != ERROR_CODE_SUCCESS){ 10438 return status; 10439 } 10440 10441 le_audio_big_sync_t * big_sync = storage; 10442 big_sync->big_handle = big_sync_params->big_handle; 10443 big_sync->params = big_sync_params; 10444 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10445 big_sync->num_bis = big_sync_params->num_bis; 10446 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10447 10448 hci_run(); 10449 10450 return ERROR_CODE_SUCCESS; 10451 } 10452 10453 uint8_t gap_big_terminate(uint8_t big_handle){ 10454 le_audio_big_t * big = hci_big_for_handle(big_handle); 10455 if (big == NULL){ 10456 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10457 } 10458 switch (big->state){ 10459 case LE_AUDIO_BIG_STATE_CREATE: 10460 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10461 hci_emit_big_terminated(big); 10462 break; 10463 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10464 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10465 break; 10466 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10467 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10468 case LE_AUDIO_BIG_STATE_ACTIVE: 10469 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10470 hci_run(); 10471 break; 10472 default: 10473 return ERROR_CODE_COMMAND_DISALLOWED; 10474 } 10475 return ERROR_CODE_SUCCESS; 10476 } 10477 10478 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10479 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10480 if (big_sync == NULL){ 10481 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10482 } 10483 switch (big_sync->state){ 10484 case LE_AUDIO_BIG_STATE_CREATE: 10485 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10486 hci_emit_big_sync_stopped(big_handle); 10487 break; 10488 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10489 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10490 break; 10491 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10492 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10493 case LE_AUDIO_BIG_STATE_ACTIVE: 10494 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10495 hci_run(); 10496 break; 10497 default: 10498 return ERROR_CODE_COMMAND_DISALLOWED; 10499 } 10500 return ERROR_CODE_SUCCESS; 10501 } 10502 10503 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10504 le_audio_big_t * big = hci_big_for_handle(big_handle); 10505 if (big == NULL){ 10506 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10507 } 10508 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10509 return ERROR_CODE_COMMAND_DISALLOWED; 10510 } 10511 big->can_send_now_requested = true; 10512 hci_iso_notify_can_send_now(); 10513 return ERROR_CODE_SUCCESS; 10514 } 10515 10516 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10517 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10518 if (iso_stream == NULL){ 10519 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10520 } 10521 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10522 return ERROR_CODE_COMMAND_DISALLOWED; 10523 } 10524 iso_stream->can_send_now_requested = true; 10525 hci_iso_notify_can_send_now(); 10526 return ERROR_CODE_SUCCESS; 10527 } 10528 10529 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10530 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10531 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10532 } 10533 if (cig_params->num_cis == 0){ 10534 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10535 } 10536 if (cig_params->num_cis > MAX_NR_CIS){ 10537 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10538 } 10539 10540 // reserve ISO Streams 10541 uint8_t i; 10542 uint8_t status = ERROR_CODE_SUCCESS; 10543 for (i=0;i<cig_params->num_cis;i++){ 10544 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10545 if (iso_stream == NULL) { 10546 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10547 break; 10548 } 10549 } 10550 10551 // free structs on error 10552 if (status != ERROR_CODE_SUCCESS){ 10553 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10554 return status; 10555 } 10556 10557 le_audio_cig_t * cig = storage; 10558 cig->cig_id = cig_params->cig_id; 10559 cig->num_cis = cig_params->num_cis; 10560 cig->params = cig_params; 10561 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10562 for (i=0;i<cig->num_cis;i++){ 10563 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10564 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10565 cig->cis_setup_active[i] = false; 10566 cig->cis_established[i] = false; 10567 } 10568 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10569 10570 hci_run(); 10571 10572 return ERROR_CODE_SUCCESS; 10573 } 10574 10575 uint8_t gap_cig_remove(uint8_t cig_id){ 10576 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10577 if (cig == NULL){ 10578 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10579 } 10580 10581 // close active CIS 10582 uint8_t i; 10583 for (i=0;i<cig->num_cis;i++){ 10584 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10585 if (stream != NULL){ 10586 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10587 } 10588 } 10589 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10590 10591 hci_run(); 10592 10593 return ERROR_CODE_SUCCESS; 10594 } 10595 10596 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10597 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10598 if (cig == NULL){ 10599 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10600 } 10601 10602 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10603 return ERROR_CODE_COMMAND_DISALLOWED; 10604 } 10605 10606 // store ACL Connection Handles 10607 uint8_t i; 10608 for (i=0;i<cig->num_cis;i++){ 10609 // check that all con handles exist and store 10610 hci_con_handle_t cis_handle = cis_con_handles[i]; 10611 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10612 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10613 } 10614 uint8_t j; 10615 bool found = false; 10616 for (j=0;j<cig->num_cis;j++){ 10617 if (cig->cis_con_handles[j] == cis_handle){ 10618 cig->acl_con_handles[j] = acl_con_handles[j]; 10619 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10620 btstack_assert(iso_stream != NULL); 10621 iso_stream->acl_handle = acl_con_handles[j]; 10622 found = true; 10623 break; 10624 } 10625 } 10626 if (!found){ 10627 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10628 } 10629 } 10630 10631 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10632 hci_run(); 10633 10634 return ERROR_CODE_SUCCESS; 10635 } 10636 10637 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10638 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10639 if (iso_stream == NULL){ 10640 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10641 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10642 } 10643 10644 // set next state and continue 10645 iso_stream->state = state; 10646 hci_run(); 10647 return ERROR_CODE_SUCCESS; 10648 } 10649 10650 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10651 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10652 } 10653 10654 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10655 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10656 } 10657 10658 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10659 10660 // GAP Privacy - notify clients before random address update 10661 10662 static bool gap_privacy_client_all_ready(void){ 10663 // check if all ready 10664 btstack_linked_list_iterator_t it; 10665 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10666 while (btstack_linked_list_iterator_has_next(&it)) { 10667 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10668 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10669 return false; 10670 } 10671 } 10672 return true; 10673 } 10674 10675 static void gap_privacy_clients_handle_ready(void){ 10676 // clear 'ready' 10677 btstack_linked_list_iterator_t it; 10678 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10679 while (btstack_linked_list_iterator_has_next(&it)) { 10680 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10681 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10682 } 10683 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10684 hci_run(); 10685 } 10686 10687 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10688 btstack_linked_list_iterator_t it; 10689 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10690 while (btstack_linked_list_iterator_has_next(&it)) { 10691 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10692 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10693 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10694 (*client->callback)(client, new_random_address); 10695 } 10696 } 10697 if (gap_privacy_client_all_ready()){ 10698 gap_privacy_clients_handle_ready(); 10699 } 10700 } 10701 10702 void gap_privacy_client_register(gap_privacy_client_t * client){ 10703 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10704 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10705 } 10706 10707 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10708 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10709 if (gap_privacy_client_all_ready()){ 10710 gap_privacy_clients_handle_ready(); 10711 } 10712 } 10713 10714 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10715 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10716 } 10717 10718 #endif /* ENABLE_BLE */ 10719 10720 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10721 void hci_setup_test_connections_fuzz(void){ 10722 hci_connection_t * conn; 10723 10724 // default address: 66:55:44:33:00:01 10725 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10726 10727 // setup Controller info 10728 hci_stack->num_cmd_packets = 255; 10729 hci_stack->acl_packets_total_num = 255; 10730 10731 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10732 addr[5] = 0x01; 10733 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10734 conn->con_handle = addr[5]; 10735 conn->state = RECEIVED_CONNECTION_REQUEST; 10736 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10737 10738 // setup incoming Classic SCO connection with con handle 0x0002 10739 addr[5] = 0x02; 10740 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10741 conn->con_handle = addr[5]; 10742 conn->state = RECEIVED_CONNECTION_REQUEST; 10743 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10744 10745 // setup ready Classic ACL connection with con handle 0x0003 10746 addr[5] = 0x03; 10747 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10748 conn->con_handle = addr[5]; 10749 conn->state = OPEN; 10750 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10751 10752 // setup ready Classic SCO connection with con handle 0x0004 10753 addr[5] = 0x04; 10754 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10755 conn->con_handle = addr[5]; 10756 conn->state = OPEN; 10757 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10758 10759 // setup ready LE ACL connection with con handle 0x005 and public address 10760 addr[5] = 0x05; 10761 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10762 conn->con_handle = addr[5]; 10763 conn->state = OPEN; 10764 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10765 conn->sm_connection.sm_connection_encrypted = 1; 10766 } 10767 10768 void hci_free_connections_fuzz(void){ 10769 btstack_linked_list_iterator_t it; 10770 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10771 while (btstack_linked_list_iterator_has_next(&it)){ 10772 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10773 btstack_linked_list_iterator_remove(&it); 10774 btstack_memory_hci_connection_free(con); 10775 } 10776 } 10777 void hci_simulate_working_fuzz(void){ 10778 hci_stack->le_scanning_param_update = false; 10779 hci_init_done(); 10780 hci_stack->num_cmd_packets = 255; 10781 } 10782 #endif 10783