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 // reserves outgoing packet buffer. 819 // @return 1 if successful 820 bool hci_reserve_packet_buffer(void){ 821 btstack_assert(hci_stack->hci_packet_buffer_reserved == false); 822 hci_stack->hci_packet_buffer_reserved = true; 823 return true; 824 } 825 826 void hci_release_packet_buffer(void){ 827 btstack_assert(hci_stack->hci_packet_buffer_reserved); 828 hci_stack->hci_packet_buffer_reserved = false; 829 hci_emit_transport_packet_sent(); 830 } 831 832 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 833 static int hci_transport_synchronous(void){ 834 return hci_stack->hci_transport->can_send_packet_now == NULL; 835 } 836 837 // used for debugging 838 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 839 static void hci_controller_dump_packets(void){ 840 // format: "{handle:04x}:{count:02d} " 841 char summaries[3][7 * 8 + 1]; 842 uint16_t totals[3]; 843 uint8_t index; 844 for (index = 0 ; index < 3 ; index++){ 845 summaries[index][0] = 0; 846 totals[index] = 0; 847 } 848 btstack_linked_item_t *it; 849 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 850 hci_connection_t * connection = (hci_connection_t *) it; 851 switch (connection->address_type){ 852 case BD_ADDR_TYPE_ACL: 853 index = 0; 854 break; 855 case BD_ADDR_TYPE_SCO: 856 index = 2; 857 break; 858 default: 859 index = 1; 860 break; 861 } 862 totals[index] += connection->num_packets_sent; 863 char item_text[10]; 864 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 865 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 866 } 867 for (index = 0 ; index < 3 ; index++){ 868 if (summaries[index][0] == 0){ 869 summaries[index][0] = '-'; 870 summaries[index][1] = 0; 871 } 872 } 873 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]); 874 } 875 #endif 876 877 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 878 879 // 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); 880 881 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 882 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 883 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 884 max_acl_data_packet_length = hci_stack->le_data_packets_length; 885 } 886 887 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 888 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 889 max_acl_data_packet_length = connection->le_max_tx_octets; 890 } 891 #endif 892 893 log_debug("hci_send_acl_packet_fragments entered"); 894 895 uint8_t status = ERROR_CODE_SUCCESS; 896 // multiple packets could be send on a synchronous HCI transport 897 while (true){ 898 899 log_debug("hci_send_acl_packet_fragments loop entered"); 900 901 // get current data 902 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 903 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 904 bool more_fragments = false; 905 906 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 907 if (current_acl_data_packet_length > max_acl_data_packet_length){ 908 more_fragments = true; 909 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 910 } 911 912 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 913 if (acl_header_pos > 0u){ 914 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 915 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 916 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 917 } 918 919 // update header len 920 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 921 922 // count packet 923 connection->num_packets_sent++; 924 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 925 926 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 927 if (more_fragments){ 928 // update start of next fragment to send 929 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 930 } else { 931 // done 932 hci_stack->acl_fragmentation_pos = 0; 933 hci_stack->acl_fragmentation_total_size = 0; 934 } 935 936 // send packet 937 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 938 const int size = current_acl_data_packet_length + 4; 939 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 940 hci_stack->acl_fragmentation_tx_active = 1; 941 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 942 if (err != 0){ 943 // no error from HCI Transport expected 944 status = ERROR_CODE_HARDWARE_FAILURE; 945 } 946 947 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 948 hci_controller_dump_packets(); 949 #endif 950 951 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 952 953 // done yet? 954 if (!more_fragments) break; 955 956 // can send more? 957 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 958 } 959 960 log_debug("hci_send_acl_packet_fragments loop over"); 961 962 // release buffer now for synchronous transport 963 if (hci_transport_synchronous()){ 964 hci_stack->acl_fragmentation_tx_active = 0; 965 hci_release_packet_buffer(); 966 } 967 968 return status; 969 } 970 971 // pre: caller has reserved the packet buffer 972 uint8_t hci_send_acl_packet_buffer(int size){ 973 btstack_assert(hci_stack->hci_packet_buffer_reserved); 974 975 uint8_t * packet = hci_stack->hci_packet_buffer; 976 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 977 978 hci_connection_t *connection = hci_connection_for_handle( con_handle); 979 if (!connection) { 980 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 981 hci_release_packet_buffer(); 982 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 983 } 984 985 // check for free places on Bluetooth module 986 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 987 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 988 hci_release_packet_buffer(); 989 return BTSTACK_ACL_BUFFERS_FULL; 990 } 991 992 #ifdef ENABLE_CLASSIC 993 hci_connection_timestamp(connection); 994 #endif 995 996 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 997 998 // setup data 999 hci_stack->acl_fragmentation_total_size = size; 1000 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1001 1002 return hci_send_acl_packet_fragments(connection); 1003 } 1004 1005 #ifdef ENABLE_CLASSIC 1006 // pre: caller has reserved the packet buffer 1007 uint8_t hci_send_sco_packet_buffer(int size){ 1008 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1009 1010 uint8_t * packet = hci_stack->hci_packet_buffer; 1011 1012 // skip checks in loopback mode 1013 if (!hci_stack->loopback_mode){ 1014 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1015 1016 // check for free places on Bluetooth module 1017 if (!hci_can_send_prepared_sco_packet_now()) { 1018 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1019 hci_release_packet_buffer(); 1020 return BTSTACK_ACL_BUFFERS_FULL; 1021 } 1022 1023 // track send packet in connection struct 1024 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1025 if (!connection) { 1026 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1027 hci_release_packet_buffer(); 1028 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1029 } 1030 1031 if (hci_have_usb_transport()){ 1032 // token used 1033 hci_stack->sco_can_send_now = false; 1034 } else { 1035 if (hci_stack->synchronous_flow_control_enabled){ 1036 connection->num_packets_sent++; 1037 } else { 1038 connection->sco_tx_ready--; 1039 } 1040 } 1041 } 1042 1043 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1044 1045 #ifdef HAVE_SCO_TRANSPORT 1046 hci_stack->sco_transport->send_packet(packet, size); 1047 hci_release_packet_buffer(); 1048 hci_emit_transport_packet_sent(); 1049 1050 return 0; 1051 #else 1052 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1053 if (hci_transport_synchronous()){ 1054 hci_release_packet_buffer(); 1055 } 1056 1057 if (err != 0){ 1058 return ERROR_CODE_HARDWARE_FAILURE; 1059 } 1060 return ERROR_CODE_SUCCESS; 1061 #endif 1062 } 1063 #endif 1064 1065 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1066 static uint8_t hci_send_iso_packet_fragments(void){ 1067 1068 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1069 uint8_t status = ERROR_CODE_SUCCESS; 1070 // multiple packets could be send on a synchronous HCI transport 1071 while (true){ 1072 1073 // get current data 1074 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1075 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1076 bool more_fragments = false; 1077 1078 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1079 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1080 more_fragments = true; 1081 current_iso_data_packet_length = max_iso_data_packet_length; 1082 } 1083 1084 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1085 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1086 uint8_t pb_flags; 1087 if (iso_header_pos == 0u){ 1088 // first fragment, keep TS field 1089 pb_flags = more_fragments ? 0x00 : 0x02; 1090 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1091 } else { 1092 // later fragment, drop TS field 1093 pb_flags = more_fragments ? 0x01 : 0x03; 1094 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1095 } 1096 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1097 1098 // update header len 1099 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1100 1101 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1102 if (more_fragments){ 1103 // update start of next fragment to send 1104 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1105 } else { 1106 // done 1107 hci_stack->iso_fragmentation_pos = 0; 1108 hci_stack->iso_fragmentation_total_size = 0; 1109 } 1110 1111 // send packet 1112 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1113 const int size = current_iso_data_packet_length + 4; 1114 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1115 hci_stack->iso_fragmentation_tx_active = true; 1116 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1117 if (err != 0){ 1118 // no error from HCI Transport expected 1119 status = ERROR_CODE_HARDWARE_FAILURE; 1120 } 1121 1122 // done yet? 1123 if (!more_fragments) break; 1124 1125 // can send more? 1126 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1127 } 1128 1129 // release buffer now for synchronous transport 1130 if (hci_transport_synchronous()){ 1131 hci_stack->iso_fragmentation_tx_active = false; 1132 hci_release_packet_buffer(); 1133 hci_emit_transport_packet_sent(); 1134 } 1135 1136 return status; 1137 } 1138 1139 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1140 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1141 1142 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1143 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1144 if (iso_stream == NULL){ 1145 hci_release_packet_buffer(); 1146 hci_iso_notify_can_send_now(); 1147 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1148 } 1149 1150 // TODO: check for space on controller 1151 1152 // skip iso packets if needed 1153 if (iso_stream->num_packets_to_skip > 0){ 1154 iso_stream->num_packets_to_skip--; 1155 // pretend it was processed and trigger next one 1156 hci_release_packet_buffer(); 1157 hci_iso_notify_can_send_now(); 1158 return ERROR_CODE_SUCCESS; 1159 } 1160 1161 // track outgoing packet sent 1162 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1163 iso_stream->num_packets_sent++; 1164 1165 // setup data 1166 hci_stack->iso_fragmentation_total_size = size; 1167 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1168 1169 return hci_send_iso_packet_fragments(); 1170 } 1171 #endif 1172 1173 static void acl_handler(uint8_t *packet, uint16_t size){ 1174 1175 // get info 1176 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1177 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1178 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1179 uint16_t acl_length = READ_ACL_LENGTH(packet); 1180 1181 // ignore non-registered handle 1182 if (!conn){ 1183 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1184 return; 1185 } 1186 1187 // assert packet is complete 1188 if ((acl_length + 4u) != size){ 1189 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1190 return; 1191 } 1192 1193 #ifdef ENABLE_CLASSIC 1194 // update idle timestamp 1195 hci_connection_timestamp(conn); 1196 #endif 1197 1198 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1199 hci_stack->host_completed_packets = 1; 1200 conn->num_packets_completed++; 1201 #endif 1202 1203 // handle different packet types 1204 switch (acl_flags & 0x03u) { 1205 1206 case 0x01: // continuation fragment 1207 1208 // sanity checks 1209 if (conn->acl_recombination_pos == 0u) { 1210 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1211 return; 1212 } 1213 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1214 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1215 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1216 conn->acl_recombination_pos = 0; 1217 return; 1218 } 1219 1220 // append fragment payload (header already stored) 1221 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1222 &packet[4], acl_length); 1223 conn->acl_recombination_pos += acl_length; 1224 1225 // forward complete L2CAP packet if complete. 1226 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1227 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1228 // reset recombination buffer 1229 conn->acl_recombination_length = 0; 1230 conn->acl_recombination_pos = 0; 1231 } 1232 break; 1233 1234 case 0x02: { // first fragment 1235 1236 // sanity check 1237 if (conn->acl_recombination_pos) { 1238 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1239 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1240 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1241 } 1242 conn->acl_recombination_pos = 0; 1243 } 1244 1245 // peek into L2CAP packet! 1246 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1247 1248 // compare fragment size to L2CAP packet size 1249 if (acl_length >= (l2cap_length + 4u)){ 1250 // forward fragment as L2CAP packet 1251 hci_emit_acl_packet(packet, acl_length + 4u); 1252 } else { 1253 1254 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1255 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1256 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1257 return; 1258 } 1259 1260 // store first fragment and tweak acl length for complete package 1261 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1262 packet, acl_length + 4u); 1263 conn->acl_recombination_pos = acl_length + 4u; 1264 conn->acl_recombination_length = l2cap_length; 1265 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1266 } 1267 break; 1268 1269 } 1270 default: 1271 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1272 return; 1273 } 1274 1275 // execute main loop 1276 hci_run(); 1277 } 1278 1279 static void hci_connection_stop_timer(hci_connection_t * conn){ 1280 btstack_run_loop_remove_timer(&conn->timeout); 1281 #ifdef ENABLE_CLASSIC 1282 btstack_run_loop_remove_timer(&conn->timeout_sco); 1283 #endif 1284 } 1285 1286 static void hci_shutdown_connection(hci_connection_t *conn){ 1287 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1288 1289 #ifdef ENABLE_CLASSIC 1290 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1291 bd_addr_type_t addr_type = conn->address_type; 1292 #endif 1293 #ifdef HAVE_SCO_TRANSPORT 1294 hci_con_handle_t con_handle = conn->con_handle; 1295 #endif 1296 #endif 1297 1298 hci_connection_stop_timer(conn); 1299 1300 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1301 btstack_memory_hci_connection_free( conn ); 1302 1303 // now it's gone 1304 hci_emit_nr_connections_changed(); 1305 1306 #ifdef ENABLE_CLASSIC 1307 #ifdef ENABLE_SCO_OVER_HCI 1308 // update SCO 1309 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1310 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1311 } 1312 #endif 1313 #ifdef HAVE_SCO_TRANSPORT 1314 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1315 hci_stack->sco_transport->close(con_handle); 1316 } 1317 #endif 1318 #endif 1319 } 1320 1321 #ifdef ENABLE_CLASSIC 1322 1323 static const uint16_t hci_acl_packet_type_sizes[] = { 1324 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1325 HCI_ACL_DH1_SIZE, 0, 0, 0, 1326 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1327 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1328 }; 1329 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1330 0, // 3 slot packets 1331 1, // 5 slot packets 1332 25, // EDR 2 mpbs 1333 26, // EDR 3 mbps 1334 39, // 3 slot EDR packts 1335 40, // 5 slot EDR packet 1336 }; 1337 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1338 0x0f00, // 3 slot packets 1339 0xf000, // 5 slot packets 1340 0x1102, // EDR 2 mpbs 1341 0x2204, // EDR 3 mbps 1342 0x0300, // 3 slot EDR packts 1343 0x3000, // 5 slot EDR packet 1344 }; 1345 1346 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1347 // enable packet types based on size 1348 uint16_t packet_types = 0; 1349 unsigned int i; 1350 for (i=0;i<16;i++){ 1351 if (hci_acl_packet_type_sizes[i] == 0) continue; 1352 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1353 packet_types |= 1 << i; 1354 } 1355 } 1356 // disable packet types due to missing local supported features 1357 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1358 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1359 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1360 if (feature_set) continue; 1361 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1362 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1363 } 1364 return packet_types; 1365 } 1366 1367 uint16_t hci_usable_acl_packet_types(void){ 1368 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1369 // flip bits for "may not be used" 1370 return active_packet_types ^ 0x3306; 1371 } 1372 1373 void hci_enable_acl_packet_types(uint16_t packet_types){ 1374 hci_stack->enabled_packet_types_acl = packet_types; 1375 } 1376 1377 static const struct { 1378 uint8_t feature_index; 1379 uint16_t feature_packet_mask; 1380 } hci_sco_packet_type_feature_requirements[] = { 1381 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1382 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1383 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1384 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1385 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1386 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1387 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1388 }; 1389 1390 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1391 static const struct { 1392 uint16_t type; 1393 uint16_t payload_length; 1394 } hci_sco_packet_type_to_payload_length[] = { 1395 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1396 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1397 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1398 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1399 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1400 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1401 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1402 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1403 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1404 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1405 }; 1406 1407 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1408 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1409 unsigned int i; 1410 // disable packet types due to missing local supported features 1411 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1412 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1413 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1414 if (feature_set) continue; 1415 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); 1416 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1417 } 1418 return packet_types; 1419 } 1420 1421 uint16_t hci_usable_sco_packet_types(void){ 1422 return hci_stack->usable_packet_types_sco; 1423 } 1424 1425 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1426 uint8_t i; 1427 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1428 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1429 return hci_sco_packet_type_to_payload_length[i].payload_length; 1430 } 1431 } 1432 return 0; 1433 } 1434 1435 #endif 1436 1437 uint8_t* hci_get_outgoing_packet_buffer(void){ 1438 // hci packet buffer is >= acl data packet length 1439 return hci_stack->hci_packet_buffer; 1440 } 1441 1442 uint16_t hci_max_acl_data_packet_length(void){ 1443 return hci_stack->acl_data_packet_length; 1444 } 1445 1446 #ifdef ENABLE_CLASSIC 1447 bool hci_extended_sco_link_supported(void){ 1448 // No. 31, byte 3, bit 7 1449 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1450 } 1451 #endif 1452 1453 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1454 // No. 54, byte 6, bit 6 1455 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1456 } 1457 1458 #ifdef ENABLE_CLASSIC 1459 static bool gap_ssp_supported(void){ 1460 // No. 51, byte 6, bit 3 1461 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1462 } 1463 #endif 1464 1465 bool hci_classic_supported(void){ 1466 #ifdef ENABLE_CLASSIC 1467 // No. 37, byte 4, bit 5, = No BR/EDR Support 1468 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1469 #else 1470 return false; 1471 #endif 1472 } 1473 1474 bool hci_le_supported(void){ 1475 #ifdef ENABLE_BLE 1476 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1477 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1478 #else 1479 return false; 1480 #endif 1481 } 1482 1483 static bool hci_command_supported(uint8_t command_index){ 1484 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1485 } 1486 1487 #ifdef ENABLE_BLE 1488 1489 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1490 bool hci_le_extended_advertising_supported(void){ 1491 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1492 } 1493 #endif 1494 1495 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1496 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1497 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1498 } else { 1499 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1500 } 1501 } 1502 1503 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1504 *addr_type = hci_stack->le_own_addr_type; 1505 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1506 } 1507 1508 #ifdef ENABLE_LE_PERIPHERAL 1509 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1510 *addr_type = hci_stack->le_advertisements_own_addr_type; 1511 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1512 }; 1513 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1514 void gap_le_get_own_advertising_set_address(uint8_t * addr_type, bd_addr_t addr, uint8_t advertising_handle){ 1515 if (advertising_handle == 0){ 1516 gap_le_get_own_advertisements_address(addr_type, addr); 1517 } else { 1518 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 1519 if (advertising_set != NULL){ 1520 switch (advertising_set->extended_params.own_address_type){ 1521 case BD_ADDR_TYPE_LE_PUBLIC: 1522 *addr_type = BD_ADDR_TYPE_LE_PUBLIC; 1523 memcpy(addr, hci_stack->local_bd_addr, 6); 1524 break; 1525 case BD_ADDR_TYPE_LE_RANDOM: 1526 *addr_type = BD_ADDR_TYPE_LE_RANDOM; 1527 memcpy(addr, advertising_set->random_address, 6); 1528 break; 1529 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 1530 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 1531 // do nothing as random address was already set from enhanced connection complete 1532 break; 1533 default: 1534 break; 1535 } 1536 } 1537 } 1538 }; 1539 #endif 1540 #endif 1541 1542 #ifdef ENABLE_LE_CENTRAL 1543 1544 /** 1545 * @brief Get own addr type and address used for LE connections (Central) 1546 */ 1547 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1548 *addr_type = hci_stack->le_connection_own_addr_type; 1549 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1550 } 1551 1552 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1553 1554 uint16_t offset = 3; 1555 uint8_t num_reports = packet[offset]; 1556 offset += 1; 1557 1558 uint16_t i; 1559 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1560 for (i=0; (i<num_reports) && (offset < size);i++){ 1561 // sanity checks on data_length: 1562 uint8_t data_length = packet[offset + 8]; 1563 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1564 if ((offset + 9u + data_length + 1u) > size) return; 1565 // setup event 1566 uint8_t event_size = 10u + data_length; 1567 uint16_t pos = 0; 1568 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1569 event[pos++] = event_size; 1570 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1571 offset += 8; 1572 pos += 8; 1573 event[pos++] = packet[offset + 1 + data_length]; // rssi 1574 event[pos++] = data_length; 1575 offset++; 1576 (void)memcpy(&event[pos], &packet[offset], data_length); 1577 pos += data_length; 1578 offset += data_length + 1u; // rssi 1579 hci_emit_event(event, pos, 1); 1580 } 1581 } 1582 1583 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1584 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1585 uint16_t offset = 3; 1586 uint8_t num_reports = packet[offset++]; 1587 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1588 uint8_t i; 1589 for (i=0; (i<num_reports) && (offset < size);i++){ 1590 // sanity checks on data_length: 1591 uint16_t data_length = packet[offset + 23]; 1592 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1593 if ((offset + 24u + data_length) > size) return; 1594 uint16_t event_type = little_endian_read_16(packet, offset); 1595 offset += 2; 1596 if ((event_type & 0x10) != 0) { 1597 // setup legacy event 1598 uint8_t legacy_event_type; 1599 switch (event_type){ 1600 case 0b0010011: 1601 // ADV_IND 1602 legacy_event_type = 0; 1603 break; 1604 case 0b0010101: 1605 // ADV_DIRECT_IND 1606 legacy_event_type = 1; 1607 break; 1608 case 0b0010010: 1609 // ADV_SCAN_IND 1610 legacy_event_type = 2; 1611 break; 1612 case 0b0010000: 1613 // ADV_NONCONN_IND 1614 legacy_event_type = 3; 1615 break; 1616 case 0b0011011: 1617 case 0b0011010: 1618 // SCAN_RSP 1619 legacy_event_type = 4; 1620 break; 1621 default: 1622 legacy_event_type = 0; 1623 break; 1624 } 1625 uint16_t pos = 0; 1626 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1627 event[pos++] = 10u + data_length; 1628 event[pos++] = legacy_event_type; 1629 // copy address type + address 1630 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1631 offset += 7; 1632 pos += 7; 1633 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1634 offset += 4; 1635 // copy rssi 1636 event[pos++] = packet[offset++]; 1637 // skip periodic advertising interval and direct address 1638 offset += 9; 1639 // copy data len + data; 1640 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1641 pos += 1 +data_length; 1642 offset += 1+ data_length; 1643 hci_emit_event(event, pos, 1); 1644 } else { 1645 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1646 uint8_t report_len = 24 + data_length; 1647 event[1] = report_len; 1648 little_endian_store_16(event, 2, event_type); 1649 memcpy(&event[4], &packet[offset], report_len); 1650 offset += report_len; 1651 hci_emit_event(event, 2 + report_len, 1); 1652 } 1653 } 1654 } 1655 #endif 1656 1657 #endif 1658 #endif 1659 1660 #ifdef ENABLE_BLE 1661 #ifdef ENABLE_LE_PERIPHERAL 1662 static void hci_update_advertisements_enabled_for_current_roles(void){ 1663 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1664 // get number of active le slave connections 1665 int num_slave_connections = 0; 1666 btstack_linked_list_iterator_t it; 1667 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1668 while (btstack_linked_list_iterator_has_next(&it)){ 1669 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1670 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1671 if (con->state != OPEN) continue; 1672 if (con->role != HCI_ROLE_SLAVE) continue; 1673 if (!hci_is_le_connection(con)) continue; 1674 num_slave_connections++; 1675 } 1676 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1677 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1678 } else { 1679 hci_stack->le_advertisements_enabled_for_current_roles = false; 1680 } 1681 } 1682 #endif 1683 #endif 1684 1685 #ifdef ENABLE_CLASSIC 1686 static void gap_run_set_local_name(void){ 1687 hci_reserve_packet_buffer(); 1688 uint8_t * packet = hci_stack->hci_packet_buffer; 1689 // construct HCI Command and send 1690 uint16_t opcode = hci_write_local_name.opcode; 1691 hci_stack->last_cmd_opcode = opcode; 1692 packet[0] = opcode & 0xff; 1693 packet[1] = opcode >> 8; 1694 packet[2] = DEVICE_NAME_LEN; 1695 memset(&packet[3], 0, DEVICE_NAME_LEN); 1696 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1697 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1698 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1699 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1700 // expand '00:00:00:00:00:00' in name with bd_addr 1701 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1702 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1703 } 1704 1705 static void gap_run_set_eir_data(void){ 1706 hci_reserve_packet_buffer(); 1707 uint8_t * packet = hci_stack->hci_packet_buffer; 1708 // construct HCI Command in-place and send 1709 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1710 hci_stack->last_cmd_opcode = opcode; 1711 uint16_t offset = 0; 1712 packet[offset++] = opcode & 0xff; 1713 packet[offset++] = opcode >> 8; 1714 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1715 packet[offset++] = 0; // FEC not required 1716 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1717 if (hci_stack->eir_data){ 1718 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1719 ad_context_t context; 1720 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1721 uint8_t data_type = ad_iterator_get_data_type(&context); 1722 uint8_t size = ad_iterator_get_data_len(&context); 1723 const uint8_t *data = ad_iterator_get_data(&context); 1724 // copy item 1725 packet[offset++] = size + 1; 1726 packet[offset++] = data_type; 1727 memcpy(&packet[offset], data, size); 1728 // update name item 1729 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1730 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1731 } 1732 offset += size; 1733 } 1734 } else { 1735 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1736 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1737 packet[offset++] = bytes_to_copy + 1; 1738 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1739 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1740 // expand '00:00:00:00:00:00' in name with bd_addr 1741 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1742 } 1743 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1744 } 1745 1746 static void hci_run_gap_tasks_classic(void){ 1747 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1748 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1749 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1750 return; 1751 } 1752 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1753 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1754 gap_run_set_local_name(); 1755 return; 1756 } 1757 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1758 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1759 gap_run_set_eir_data(); 1760 return; 1761 } 1762 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1763 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1764 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1765 return; 1766 } 1767 // write page scan activity 1768 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1769 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1770 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1771 return; 1772 } 1773 // write page scan type 1774 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1775 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1776 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1777 return; 1778 } 1779 // write page timeout 1780 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1781 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1782 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1783 return; 1784 } 1785 // send scan enable 1786 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1787 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1788 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1789 return; 1790 } 1791 // send write scan activity 1792 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1793 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1794 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1795 return; 1796 } 1797 // send write inquiry transmit power level 1798 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1799 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1800 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1801 return; 1802 } 1803 } 1804 #endif 1805 1806 #ifndef HAVE_HOST_CONTROLLER_API 1807 1808 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1809 if (!hci_stack->config) return 0; 1810 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1811 // Limit baud rate for Broadcom chipsets to 3 mbps 1812 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1813 baud_rate = 3000000; 1814 } 1815 return baud_rate; 1816 } 1817 1818 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1819 UNUSED(ds); 1820 1821 switch (hci_stack->substate){ 1822 case HCI_INIT_W4_SEND_RESET: 1823 log_info("Resend HCI Reset"); 1824 hci_stack->substate = HCI_INIT_SEND_RESET; 1825 hci_stack->num_cmd_packets = 1; 1826 hci_run(); 1827 break; 1828 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1829 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1830 if (hci_stack->hci_transport->reset_link){ 1831 hci_stack->hci_transport->reset_link(); 1832 } 1833 1834 /* fall through */ 1835 1836 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1837 log_info("Resend HCI Reset - CSR Warm Boot"); 1838 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1839 hci_stack->num_cmd_packets = 1; 1840 hci_run(); 1841 break; 1842 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1843 if (hci_stack->hci_transport->set_baudrate){ 1844 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1845 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1846 hci_stack->hci_transport->set_baudrate(baud_rate); 1847 } 1848 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1849 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1850 if (hci_stack->hci_transport->reset_link){ 1851 log_info("Link Reset"); 1852 hci_stack->hci_transport->reset_link(); 1853 } 1854 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1855 hci_run(); 1856 } 1857 break; 1858 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1859 // otherwise continue 1860 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1861 hci_send_cmd(&hci_read_local_supported_commands); 1862 break; 1863 default: 1864 break; 1865 } 1866 } 1867 #endif 1868 1869 static void hci_initializing_next_state(void){ 1870 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1871 } 1872 1873 static void hci_init_done(void){ 1874 // done. tell the app 1875 log_info("hci_init_done -> HCI_STATE_WORKING"); 1876 hci_stack->state = HCI_STATE_WORKING; 1877 hci_emit_state(); 1878 } 1879 1880 // assumption: hci_can_send_command_packet_now() == true 1881 static void hci_initializing_run(void){ 1882 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1883 1884 if (!hci_can_send_command_packet_now()) return; 1885 1886 #ifndef HAVE_HOST_CONTROLLER_API 1887 bool need_baud_change = hci_stack->config 1888 && hci_stack->chipset 1889 && hci_stack->chipset->set_baudrate_command 1890 && hci_stack->hci_transport->set_baudrate 1891 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1892 #endif 1893 1894 switch (hci_stack->substate){ 1895 case HCI_INIT_SEND_RESET: 1896 hci_state_reset(); 1897 1898 #ifndef HAVE_HOST_CONTROLLER_API 1899 // prepare reset if command complete not received in 100ms 1900 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1901 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1902 btstack_run_loop_add_timer(&hci_stack->timeout); 1903 #endif 1904 // send command 1905 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1906 hci_send_cmd(&hci_reset); 1907 break; 1908 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1909 hci_send_cmd(&hci_read_local_version_information); 1910 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1911 break; 1912 1913 #ifndef HAVE_HOST_CONTROLLER_API 1914 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1915 hci_state_reset(); 1916 // prepare reset if command complete not received in 100ms 1917 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1918 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1919 btstack_run_loop_add_timer(&hci_stack->timeout); 1920 // send command 1921 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1922 hci_send_cmd(&hci_reset); 1923 break; 1924 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1925 hci_state_reset(); 1926 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1927 hci_send_cmd(&hci_reset); 1928 break; 1929 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1930 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1931 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1932 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1933 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1934 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1935 break; 1936 } 1937 case HCI_INIT_SET_BD_ADDR: 1938 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1939 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1940 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1941 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1942 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1943 break; 1944 case HCI_INIT_SEND_READ_LOCAL_NAME: 1945 #ifdef ENABLE_CLASSIC 1946 hci_send_cmd(&hci_read_local_name); 1947 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1948 break; 1949 #endif 1950 /* fall through */ 1951 1952 case HCI_INIT_SEND_BAUD_CHANGE: 1953 if (need_baud_change) { 1954 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1955 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1956 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1957 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1958 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1959 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1960 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1961 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1962 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1963 btstack_run_loop_add_timer(&hci_stack->timeout); 1964 } 1965 break; 1966 } 1967 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1968 1969 /* fall through */ 1970 1971 case HCI_INIT_CUSTOM_INIT: 1972 case HCI_INIT_CUSTOM_PRE_INIT: 1973 // Custom initialization 1974 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1975 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1976 bool send_cmd = false; 1977 switch (hci_stack->chipset_result){ 1978 case BTSTACK_CHIPSET_VALID_COMMAND: 1979 send_cmd = true; 1980 switch (hci_stack->substate){ 1981 case HCI_INIT_CUSTOM_INIT: 1982 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1983 break; 1984 case HCI_INIT_CUSTOM_PRE_INIT: 1985 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1986 break; 1987 default: 1988 btstack_assert(false); 1989 break; 1990 } 1991 break; 1992 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1993 send_cmd = true; 1994 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1995 log_info("CSR Warm Boot"); 1996 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1997 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1998 btstack_run_loop_add_timer(&hci_stack->timeout); 1999 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 2000 && hci_stack->config 2001 && hci_stack->chipset 2002 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2003 && hci_stack->hci_transport->set_baudrate 2004 && hci_transport_uart_get_main_baud_rate()){ 2005 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2006 } else { 2007 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2008 } 2009 break; 2010 default: 2011 break; 2012 } 2013 2014 if (send_cmd){ 2015 int size = 3u + hci_stack->hci_packet_buffer[2u]; 2016 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 2017 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 2018 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 2019 break; 2020 } 2021 log_info("Init script done"); 2022 2023 // Custom Pre-Init complete, start regular init with HCI Reset 2024 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2025 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2026 hci_send_cmd(&hci_reset); 2027 break; 2028 } 2029 2030 // Init script download on Broadcom chipsets causes: 2031 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2032 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2033 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2034 2035 // - baud rate to reset, restore UART baud rate if needed 2036 if (need_baud_change) { 2037 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2038 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2039 hci_stack->hci_transport->set_baudrate(baud_rate); 2040 } 2041 2042 uint16_t bcm_delay_ms = 300; 2043 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2044 // -> Work around: wait here. 2045 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2046 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2047 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2048 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2049 btstack_run_loop_add_timer(&hci_stack->timeout); 2050 break; 2051 } 2052 } 2053 #endif 2054 /* fall through */ 2055 2056 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2057 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2058 hci_send_cmd(&hci_read_local_supported_commands); 2059 break; 2060 case HCI_INIT_READ_BD_ADDR: 2061 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2062 hci_send_cmd(&hci_read_bd_addr); 2063 break; 2064 case HCI_INIT_READ_BUFFER_SIZE: 2065 // only read buffer size if supported 2066 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2067 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2068 hci_send_cmd(&hci_read_buffer_size); 2069 break; 2070 } 2071 2072 /* fall through */ 2073 2074 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2075 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2076 hci_send_cmd(&hci_read_local_supported_features); 2077 break; 2078 2079 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2080 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2081 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2082 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2083 break; 2084 case HCI_INIT_HOST_BUFFER_SIZE: 2085 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2086 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2087 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2088 break; 2089 #endif 2090 2091 case HCI_INIT_SET_EVENT_MASK: 2092 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2093 if (hci_le_supported()){ 2094 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2095 } else { 2096 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2097 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2098 } 2099 break; 2100 2101 case HCI_INIT_SET_EVENT_MASK_2: 2102 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2103 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2104 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2105 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2106 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2107 // Encryption Change Event v2 - bit 25 2108 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2109 break; 2110 } 2111 2112 #ifdef ENABLE_CLASSIC 2113 /* fall through */ 2114 2115 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2116 if (hci_classic_supported() && gap_ssp_supported()){ 2117 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2118 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2119 break; 2120 } 2121 2122 /* fall through */ 2123 2124 case HCI_INIT_WRITE_INQUIRY_MODE: 2125 if (hci_classic_supported()){ 2126 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2127 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2128 break; 2129 } 2130 2131 /* fall through */ 2132 2133 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2134 // skip write secure connections host support if not supported or disabled 2135 if (hci_classic_supported() && hci_stack->secure_connections_enable 2136 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2137 hci_stack->secure_connections_active = true; 2138 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2139 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2140 break; 2141 } 2142 2143 /* fall through */ 2144 2145 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2146 // skip set min encryption key size 2147 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2148 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2149 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2150 break; 2151 } 2152 2153 #ifdef ENABLE_SCO_OVER_HCI 2154 /* fall through */ 2155 2156 // only sent if ENABLE_SCO_OVER_HCI is defined 2157 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2158 // skip write synchronous flow control if not supported 2159 if (hci_classic_supported() 2160 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2161 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2162 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2163 break; 2164 } 2165 /* fall through */ 2166 2167 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2168 // skip write default erroneous data reporting if not supported 2169 if (hci_classic_supported() 2170 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2171 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2172 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2173 break; 2174 } 2175 #endif 2176 2177 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2178 /* fall through */ 2179 2180 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2181 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2182 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2183 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2184 #ifdef ENABLE_SCO_OVER_HCI 2185 log_info("BCM: Route SCO data via HCI transport"); 2186 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2187 #endif 2188 #ifdef ENABLE_SCO_OVER_PCM 2189 log_info("BCM: Route SCO data via PCM interface"); 2190 #ifdef ENABLE_BCM_PCM_WBS 2191 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2192 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2193 #else 2194 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2195 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2196 #endif 2197 #endif 2198 break; 2199 } 2200 #endif 2201 2202 #ifdef ENABLE_SCO_OVER_PCM 2203 /* fall through */ 2204 2205 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2206 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2207 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2208 log_info("BCM: Config PCM interface for I2S"); 2209 #ifdef ENABLE_BCM_PCM_WBS 2210 // 512 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, 2); 2212 #else 2213 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2214 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2215 #endif 2216 break; 2217 } 2218 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2219 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2220 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2221 log_info("BCM: Config PCM Data format"); 2222 // msb first, fill bits 0, left justified 2223 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2224 break; 2225 } 2226 #ifdef HAVE_BCM_PCM2 2227 case HCI_INIT_BCM_PCM2_SETUP: 2228 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2229 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2230 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2231 uint32_t pcm_clock_freq; 2232 uint8_t ch_0_period; 2233 #ifdef ENABLE_BCM_PCM_WBS 2234 // 512 kHz, resample 8 kHz to 16 khz 2235 pcm_clock_freq = 512000; 2236 ch_0_period = 1; 2237 #else 2238 // 256 khz, 8 khz output 2239 pcm_clock_freq = 256000; 2240 ch_0_period = 0; 2241 #endif 2242 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2243 hci_send_cmd(&hci_bcm_pcm2_setup, 2244 0x00, // Action = Write 2245 0x00, // Test_Options = None 2246 op_mode, // Op_Mode 2247 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2248 pcm_clock_freq, // PCM_Clock_Freq 2249 0x01, // Sync_Signal_Width 2250 0x0F, // Slot_Width 2251 0x01, // NumberOfSlots 2252 0x00, // Bank_0_Fill_Mode = 0s 2253 0x00, // Bank_0_Number_of_Fill_Bits 2254 0x00, // Bank_0_Programmable_Fill_Data 2255 0x00, // Bank_1_Fill_Mode = 0s 2256 0x00, // Bank_1_Number_of_Fill_Bits 2257 0x00, // Bank_1_Programmable_Fill_Data 2258 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2259 0x00, // Ch_0_Slot_Number 2260 0x01, // Ch_1_Slot_Number 2261 0x02, // Ch_2_Slot_Number 2262 0x03, // Ch_3_Slot_Number 2263 0x04, // Ch_4_Slot_Number 2264 ch_0_period, // Ch_0_Period 2265 0x00, // Ch_1_Period 2266 0x00 // Ch_2_Period 2267 ); 2268 break; 2269 } 2270 #endif 2271 #endif /* ENABLE_SCO_OVER_PCM */ 2272 #endif /* ENABLE_CLASSIC */ 2273 2274 #ifdef ENABLE_BLE 2275 /* fall through */ 2276 2277 // LE INIT 2278 case HCI_INIT_LE_READ_BUFFER_SIZE: 2279 if (hci_le_supported()){ 2280 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2281 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2282 hci_send_cmd(&hci_le_read_buffer_size_v2); 2283 } else { 2284 hci_send_cmd(&hci_le_read_buffer_size); 2285 } 2286 break; 2287 } 2288 2289 /* fall through */ 2290 2291 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2292 // skip write le host if not supported (e.g. on LE only EM9301) 2293 if (hci_le_supported() 2294 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2295 // LE Supported Host = 1, Simultaneous Host = 0 2296 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2297 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2298 break; 2299 } 2300 2301 /* fall through */ 2302 2303 case HCI_INIT_LE_SET_EVENT_MASK: 2304 if (hci_le_supported()){ 2305 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2306 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2307 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2308 #else 2309 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2310 #endif 2311 break; 2312 } 2313 #endif 2314 2315 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2316 /* fall through */ 2317 2318 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2319 if (hci_le_supported() 2320 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2321 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2322 hci_send_cmd(&hci_le_read_maximum_data_length); 2323 break; 2324 } 2325 2326 /* fall through */ 2327 2328 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2329 if (hci_le_supported() 2330 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2331 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2332 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2333 break; 2334 } 2335 #endif 2336 2337 #ifdef ENABLE_LE_CENTRAL 2338 /* fall through */ 2339 2340 case HCI_INIT_READ_WHITE_LIST_SIZE: 2341 if (hci_le_supported()){ 2342 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2343 hci_send_cmd(&hci_le_read_white_list_size); 2344 break; 2345 } 2346 2347 #endif 2348 2349 #ifdef ENABLE_LE_PERIPHERAL 2350 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2351 /* fall through */ 2352 2353 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2354 if (hci_le_extended_advertising_supported()){ 2355 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2356 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2357 break; 2358 } 2359 #endif 2360 #endif 2361 /* fall through */ 2362 2363 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2364 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2365 if (hci_le_supported()) { 2366 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2367 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2368 break; 2369 } 2370 #endif 2371 2372 /* fall through */ 2373 2374 case HCI_INIT_DONE: 2375 hci_stack->substate = HCI_INIT_DONE; 2376 // main init sequence complete 2377 #ifdef ENABLE_CLASSIC 2378 // check if initial Classic GAP Tasks are completed 2379 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2380 hci_run_gap_tasks_classic(); 2381 break; 2382 } 2383 #endif 2384 #ifdef ENABLE_BLE 2385 #ifdef ENABLE_LE_CENTRAL 2386 // check if initial LE GAP Tasks are completed 2387 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2388 hci_run_general_gap_le(); 2389 break; 2390 } 2391 #endif 2392 #endif 2393 hci_init_done(); 2394 break; 2395 2396 default: 2397 return; 2398 } 2399 } 2400 2401 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2402 bool command_completed = false; 2403 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2404 uint16_t opcode = little_endian_read_16(packet,3); 2405 if (opcode == hci_stack->last_cmd_opcode){ 2406 command_completed = true; 2407 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2408 } else { 2409 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2410 } 2411 } 2412 2413 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2414 uint8_t status = packet[2]; 2415 uint16_t opcode = little_endian_read_16(packet,4); 2416 if (opcode == hci_stack->last_cmd_opcode){ 2417 if (status){ 2418 command_completed = true; 2419 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2420 } else { 2421 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2422 } 2423 } else { 2424 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2425 } 2426 } 2427 #ifndef HAVE_HOST_CONTROLLER_API 2428 // Vendor == CSR 2429 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2430 // TODO: track actual command 2431 command_completed = true; 2432 } 2433 2434 // Vendor == Toshiba 2435 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2436 // TODO: track actual command 2437 command_completed = true; 2438 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2439 hci_stack->num_cmd_packets = 1; 2440 } 2441 #endif 2442 2443 return command_completed; 2444 } 2445 2446 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2447 2448 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2449 2450 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2451 2452 #ifndef HAVE_HOST_CONTROLLER_API 2453 2454 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2455 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2456 // 2457 // HCI Reset 2458 // Timeout 100 ms 2459 // HCI Reset 2460 // Command Complete Reset 2461 // HCI Read Local Version Information 2462 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2463 // hang... 2464 // 2465 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2466 if (!command_completed 2467 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2468 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2469 2470 uint16_t opcode = little_endian_read_16(packet,3); 2471 if (opcode == hci_reset.opcode){ 2472 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2473 return; 2474 } 2475 } 2476 2477 // CSR & H5 2478 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2479 if (!command_completed 2480 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2481 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2482 2483 uint16_t opcode = little_endian_read_16(packet,3); 2484 if (opcode == hci_reset.opcode){ 2485 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2486 return; 2487 } 2488 } 2489 2490 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2491 // fix: Correct substate and behave as command below 2492 if (command_completed){ 2493 switch (hci_stack->substate){ 2494 case HCI_INIT_SEND_RESET: 2495 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2496 break; 2497 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2498 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2499 break; 2500 default: 2501 break; 2502 } 2503 } 2504 2505 #endif 2506 2507 if (!command_completed) return; 2508 2509 bool need_baud_change = false; 2510 bool need_addr_change = false; 2511 2512 #ifndef HAVE_HOST_CONTROLLER_API 2513 need_baud_change = hci_stack->config 2514 && hci_stack->chipset 2515 && hci_stack->chipset->set_baudrate_command 2516 && hci_stack->hci_transport->set_baudrate 2517 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2518 2519 need_addr_change = hci_stack->custom_bd_addr_set 2520 && hci_stack->chipset 2521 && hci_stack->chipset->set_bd_addr_command; 2522 #endif 2523 2524 switch(hci_stack->substate){ 2525 2526 #ifndef HAVE_HOST_CONTROLLER_API 2527 case HCI_INIT_SEND_RESET: 2528 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2529 // fix: just correct substate and behave as command below 2530 2531 /* fall through */ 2532 #endif 2533 2534 case HCI_INIT_W4_SEND_RESET: 2535 btstack_run_loop_remove_timer(&hci_stack->timeout); 2536 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2537 return; 2538 2539 #ifndef HAVE_HOST_CONTROLLER_API 2540 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2541 // for STLC2500D, baud rate change already happened. 2542 // for others, baud rate gets changed now 2543 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2544 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2545 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2546 hci_stack->hci_transport->set_baudrate(baud_rate); 2547 } 2548 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2549 return; 2550 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2551 btstack_run_loop_remove_timer(&hci_stack->timeout); 2552 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2553 return; 2554 case HCI_INIT_W4_CUSTOM_INIT: 2555 // repeat custom init 2556 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2557 return; 2558 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2559 // repeat custom init 2560 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2561 return; 2562 #endif 2563 2564 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2565 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2566 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2567 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2568 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2569 return; 2570 } 2571 if (need_addr_change){ 2572 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2573 return; 2574 } 2575 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2576 return; 2577 #ifndef HAVE_HOST_CONTROLLER_API 2578 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2579 if (need_baud_change){ 2580 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2581 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2582 hci_stack->hci_transport->set_baudrate(baud_rate); 2583 } 2584 if (need_addr_change){ 2585 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2586 return; 2587 } 2588 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2589 return; 2590 case HCI_INIT_W4_SET_BD_ADDR: 2591 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2592 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2593 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2594 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2595 return; 2596 } 2597 // skipping st warm boot 2598 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2599 return; 2600 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2601 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2602 return; 2603 #endif 2604 2605 case HCI_INIT_DONE: 2606 // set state if we came here by fall through 2607 hci_stack->substate = HCI_INIT_DONE; 2608 return; 2609 2610 default: 2611 break; 2612 } 2613 hci_initializing_next_state(); 2614 } 2615 2616 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2617 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2618 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2619 // check if we have been aware of the HCI connection 2620 switch (conn->state){ 2621 case SENT_CREATE_CONNECTION: 2622 case RECEIVED_CONNECTION_REQUEST: 2623 case ACCEPTED_CONNECTION_REQUEST: 2624 break; 2625 default: 2626 return; 2627 } 2628 2629 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2630 bd_addr_t bd_address; 2631 (void)memcpy(&bd_address, conn->address, 6); 2632 2633 #ifdef ENABLE_CLASSIC 2634 // cache needed data 2635 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2636 #endif 2637 2638 // connection failed, remove entry 2639 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2640 btstack_memory_hci_connection_free( conn ); 2641 2642 #ifdef ENABLE_CLASSIC 2643 // notify client if dedicated bonding 2644 if (notify_dedicated_bonding_failed){ 2645 log_info("hci notify_dedicated_bonding_failed"); 2646 hci_emit_dedicated_bonding_result(bd_address, status); 2647 } 2648 2649 // if authentication error, also delete link key 2650 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2651 gap_drop_link_key_for_bd_addr(bd_address); 2652 } 2653 #else 2654 UNUSED(status); 2655 #endif 2656 } 2657 2658 #ifdef ENABLE_CLASSIC 2659 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2660 // SSP Controller 2661 if (features[6] & (1 << 3)){ 2662 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2663 } 2664 // eSCO 2665 if (features[3] & (1<<7)){ 2666 conn->remote_supported_features[0] |= 1; 2667 } 2668 // Extended features 2669 if (features[7] & (1<<7)){ 2670 conn->remote_supported_features[0] |= 2; 2671 } 2672 // SCO packet types 2673 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2674 } 2675 2676 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2677 // SSP Host 2678 if (features[0] & (1 << 0)){ 2679 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2680 } 2681 // SC Host 2682 if (features[0] & (1 << 3)){ 2683 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2684 } 2685 } 2686 2687 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2688 // SC Controller 2689 if (features[1] & (1 << 0)){ 2690 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2691 } 2692 } 2693 2694 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2695 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2696 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2697 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2698 if (conn->bonding_flags & BONDING_DEDICATED){ 2699 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2700 } 2701 } 2702 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2703 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2704 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2705 } 2706 2707 #endif 2708 2709 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2710 // handle BT initialization 2711 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2712 hci_initializing_event_handler(packet, size); 2713 } 2714 2715 // help with BT sleep 2716 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2717 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2718 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2719 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2720 hci_initializing_next_state(); 2721 } 2722 } 2723 2724 #ifdef ENABLE_CLASSIC 2725 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2726 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2727 conn->requested_security_level = LEVEL_0; 2728 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2729 hci_emit_security_level(conn->con_handle, security_level); 2730 2731 // dedicated bonding 2732 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2733 conn->bonding_flags &= ~BONDING_DEDICATED; 2734 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2735 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2736 // emit dedicated bonding complete, don't disconnect 2737 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2738 #else 2739 // request disconnect, event is emitted after disconnect 2740 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2741 #endif 2742 } 2743 } 2744 2745 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2746 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2747 conn->encryption_key_size = encryption_key_size; 2748 2749 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2750 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2751 hci_handle_mutual_authentication_completed(conn); 2752 } else { 2753 // otherwise trigger remote feature request and send authentication request 2754 hci_trigger_remote_features_for_connection(conn); 2755 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2756 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2757 } 2758 } 2759 } 2760 #endif 2761 2762 static void hci_store_local_supported_commands(const uint8_t * packet){ 2763 // create mapping table 2764 #define X(name, offset, bit) { offset, bit }, 2765 static struct { 2766 uint8_t byte_offset; 2767 uint8_t bit_position; 2768 } supported_hci_commands_map [] = { 2769 SUPPORTED_HCI_COMMANDS 2770 }; 2771 #undef X 2772 2773 // create names for debug purposes 2774 #ifdef ENABLE_LOG_DEBUG 2775 #define X(name, offset, bit) #name, 2776 static const char * command_names[] = { 2777 SUPPORTED_HCI_COMMANDS 2778 }; 2779 #undef X 2780 #endif 2781 2782 hci_stack->local_supported_commands = 0; 2783 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2784 uint16_t i; 2785 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2786 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2787 #ifdef ENABLE_LOG_DEBUG 2788 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); 2789 #else 2790 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2791 #endif 2792 hci_stack->local_supported_commands |= (1LU << i); 2793 } 2794 } 2795 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2796 } 2797 2798 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2799 UNUSED(size); 2800 2801 uint8_t status = 0; 2802 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2803 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2804 } 2805 uint16_t manufacturer; 2806 #ifdef ENABLE_CLASSIC 2807 hci_connection_t * conn; 2808 #endif 2809 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2810 hci_con_handle_t handle; 2811 #endif 2812 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2813 le_audio_cig_t * cig; 2814 #endif 2815 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2816 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2817 #endif 2818 2819 // get num cmd packets - limit to 1 to reduce complexity 2820 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2821 2822 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2823 switch (opcode){ 2824 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2825 if (status) break; 2826 // terminate, name 248 chars 2827 packet[6+248] = 0; 2828 log_info("local name: %s", &packet[6]); 2829 break; 2830 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2831 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2832 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2833 uint16_t acl_len = little_endian_read_16(packet, 6); 2834 uint16_t sco_len = packet[8]; 2835 2836 // determine usable ACL/SCO payload size 2837 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2838 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2839 2840 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2841 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2842 2843 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2844 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2845 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2846 } 2847 break; 2848 case HCI_OPCODE_HCI_READ_RSSI: 2849 if (status == ERROR_CODE_SUCCESS){ 2850 uint8_t event[5]; 2851 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2852 event[1] = 3; 2853 (void)memcpy(&event[2], &packet[6], 3); 2854 hci_emit_event(event, sizeof(event), 1); 2855 } 2856 break; 2857 #ifdef ENABLE_BLE 2858 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2859 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2860 hci_stack->le_iso_packets_total_num = packet[11]; 2861 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2862 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2863 2864 /* fall through */ 2865 2866 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2867 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2868 hci_stack->le_acl_packets_total_num = packet[8]; 2869 // determine usable ACL payload size 2870 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2871 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2872 } 2873 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); 2874 break; 2875 #endif 2876 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2877 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2878 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2879 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2880 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); 2881 break; 2882 #endif 2883 #ifdef ENABLE_LE_CENTRAL 2884 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2885 hci_stack->le_whitelist_capacity = packet[6]; 2886 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2887 break; 2888 #endif 2889 #ifdef ENABLE_LE_PERIPHERAL 2890 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2891 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2892 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2893 break; 2894 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2895 if (hci_stack->le_advertising_set_in_current_command != 0) { 2896 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2897 hci_stack->le_advertising_set_in_current_command = 0; 2898 if (advertising_set == NULL) break; 2899 uint8_t adv_status = packet[6]; 2900 uint8_t tx_power = packet[7]; 2901 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 }; 2902 if (adv_status == 0){ 2903 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2904 } 2905 hci_emit_event(event, sizeof(event), 1); 2906 } 2907 break; 2908 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2909 if (hci_stack->le_advertising_set_in_current_command != 0) { 2910 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2911 hci_stack->le_advertising_set_in_current_command = 0; 2912 if (advertising_set == NULL) break; 2913 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2914 if (status == 0){ 2915 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2916 } 2917 hci_emit_event(event, sizeof(event), 1); 2918 } 2919 break; 2920 #endif 2921 #endif 2922 case HCI_OPCODE_HCI_READ_BD_ADDR: 2923 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2924 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2925 #ifdef ENABLE_CLASSIC 2926 if (hci_stack->link_key_db){ 2927 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2928 } 2929 #endif 2930 break; 2931 #ifdef ENABLE_CLASSIC 2932 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2933 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2934 break; 2935 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2936 if (status == ERROR_CODE_SUCCESS) { 2937 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2938 } else { 2939 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2940 } 2941 break; 2942 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2943 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2944 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2945 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2946 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2947 hci_emit_event(event, sizeof(event), 1); 2948 } 2949 break; 2950 #endif 2951 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2952 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2953 2954 #ifdef ENABLE_CLASSIC 2955 // determine usable ACL packet types based on host buffer size and supported features 2956 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]); 2957 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2958 // determine usable SCO packet types based on supported features 2959 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2960 &hci_stack->local_supported_features[0]); 2961 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2962 #endif 2963 // Classic/LE 2964 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2965 break; 2966 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2967 manufacturer = little_endian_read_16(packet, 10); 2968 // map Cypress & Infineon to Broadcom 2969 switch (manufacturer){ 2970 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2971 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2972 log_info("Treat Cypress/Infineon as Broadcom"); 2973 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2974 little_endian_store_16(packet, 10, manufacturer); 2975 break; 2976 default: 2977 break; 2978 } 2979 hci_stack->manufacturer = manufacturer; 2980 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2981 break; 2982 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2983 hci_store_local_supported_commands(packet); 2984 break; 2985 #ifdef ENABLE_CLASSIC 2986 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2987 if (status) return; 2988 hci_stack->synchronous_flow_control_enabled = 1; 2989 break; 2990 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2991 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2992 conn = hci_connection_for_handle(handle); 2993 if (conn != NULL) { 2994 uint8_t key_size = 0; 2995 if (status == 0){ 2996 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2997 log_info("Handle %04x key Size: %u", handle, key_size); 2998 } else { 2999 key_size = 1; 3000 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3001 } 3002 hci_handle_read_encryption_key_size_complete(conn, key_size); 3003 } 3004 break; 3005 // assert pairing complete event is emitted. 3006 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3007 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3008 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3009 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3010 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3011 // lookup connection by gap pairing addr 3012 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3013 if (conn == NULL) break; 3014 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3015 break; 3016 3017 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3018 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3019 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3020 uint8_t event[67]; 3021 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3022 event[1] = 65; 3023 (void)memset(&event[2], 0, 65); 3024 if (status == ERROR_CODE_SUCCESS){ 3025 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3026 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3027 event[2] = 3; 3028 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3029 } else { 3030 event[2] = 1; 3031 } 3032 } 3033 hci_emit_event(event, sizeof(event), 0); 3034 break; 3035 } 3036 3037 // note: only needed if user does not provide OOB data 3038 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3039 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3040 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3041 if (conn == NULL) break; 3042 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3043 break; 3044 #endif 3045 #endif 3046 #ifdef ENABLE_BLE 3047 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3048 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3049 // lookup CIG 3050 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3051 if (cig != NULL){ 3052 uint8_t i = 0; 3053 if (status == ERROR_CODE_SUCCESS){ 3054 // assign CIS handles to pre-allocated CIS 3055 btstack_linked_list_iterator_t it; 3056 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3057 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3058 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3059 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3060 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3061 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3062 iso_stream->cis_handle = cis_handle; 3063 cig->cis_con_handles[i] = cis_handle; 3064 i++; 3065 } 3066 } 3067 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3068 hci_emit_cig_created(cig, status); 3069 } else { 3070 hci_emit_cig_created(cig, status); 3071 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3072 } 3073 } 3074 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3075 break; 3076 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3077 if (status != ERROR_CODE_SUCCESS){ 3078 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3079 } 3080 break; 3081 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3082 if (status != ERROR_CODE_SUCCESS){ 3083 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3084 } 3085 break; 3086 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3087 // lookup BIG by state 3088 btstack_linked_list_iterator_t it; 3089 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3090 while (btstack_linked_list_iterator_has_next(&it)) { 3091 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3092 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3093 if (status == ERROR_CODE_SUCCESS){ 3094 big->state_vars.next_bis++; 3095 if (big->state_vars.next_bis == big->num_bis){ 3096 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3097 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3098 } else { 3099 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3100 } 3101 } else { 3102 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3103 big->state_vars.status = status; 3104 } 3105 return; 3106 } 3107 } 3108 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3109 while (btstack_linked_list_iterator_has_next(&it)) { 3110 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3111 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3112 if (status == ERROR_CODE_SUCCESS){ 3113 big_sync->state_vars.next_bis++; 3114 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3115 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3116 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3117 } else { 3118 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3119 } 3120 } else { 3121 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3122 big_sync->state_vars.status = status; 3123 } 3124 return; 3125 } 3126 } 3127 // Lookup CIS via active group operation 3128 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3129 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3130 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3131 3132 // lookup CIS by state 3133 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3134 while (btstack_linked_list_iterator_has_next(&it)){ 3135 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3136 handle = iso_stream->cis_handle; 3137 bool emit_cis_created = false; 3138 switch (iso_stream->state){ 3139 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3140 if (status != ERROR_CODE_SUCCESS){ 3141 emit_cis_created = true; 3142 break; 3143 } 3144 if (iso_stream->max_sdu_c_to_p > 0){ 3145 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3146 } else { 3147 emit_cis_created = true; 3148 } 3149 break; 3150 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3151 emit_cis_created = true; 3152 break; 3153 default: 3154 break; 3155 } 3156 if (emit_cis_created){ 3157 hci_cis_handle_created(iso_stream, status); 3158 } 3159 } 3160 } else { 3161 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3162 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3163 if (cig != NULL) { 3164 // emit cis created if all ISO Paths have been created 3165 // assume we are central 3166 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3167 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3168 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3169 // if outgoing has been setup, or incoming was setup but outgoing not required 3170 if ((cis_direction == 1) || (outgoing_needed == false)){ 3171 // lookup iso stream by cig/cis 3172 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3173 while (btstack_linked_list_iterator_has_next(&it)) { 3174 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3175 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3176 hci_cis_handle_created(iso_stream, status); 3177 } 3178 } 3179 } 3180 // next state 3181 cig->state_vars.next_cis++; 3182 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3183 } 3184 } 3185 } 3186 break; 3187 } 3188 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3189 // lookup BIG by state 3190 btstack_linked_list_iterator_t it; 3191 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3192 while (btstack_linked_list_iterator_has_next(&it)) { 3193 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3194 uint8_t big_handle = big_sync->big_handle; 3195 switch (big_sync->state){ 3196 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3197 btstack_linked_list_iterator_remove(&it); 3198 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3199 return; 3200 default: 3201 btstack_linked_list_iterator_remove(&it); 3202 hci_emit_big_sync_stopped(big_handle); 3203 return; 3204 } 3205 } 3206 break; 3207 } 3208 #endif 3209 #endif 3210 default: 3211 break; 3212 } 3213 } 3214 3215 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3216 UNUSED(size); 3217 3218 // get num cmd packets - limit to 1 to reduce complexity 3219 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3220 3221 // get opcode and command status 3222 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3223 3224 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3225 uint8_t status = hci_event_command_status_get_status(packet); 3226 #endif 3227 3228 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3229 bd_addr_type_t addr_type; 3230 bd_addr_t addr; 3231 #endif 3232 3233 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3234 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3235 #endif 3236 3237 switch (opcode){ 3238 #ifdef ENABLE_CLASSIC 3239 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3240 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3241 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3242 #endif 3243 #ifdef ENABLE_LE_CENTRAL 3244 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3245 #endif 3246 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3247 addr_type = hci_stack->outgoing_addr_type; 3248 memcpy(addr, hci_stack->outgoing_addr, 6); 3249 3250 // reset outgoing address info 3251 memset(hci_stack->outgoing_addr, 0, 6); 3252 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3253 3254 // on error 3255 if (status != ERROR_CODE_SUCCESS){ 3256 #ifdef ENABLE_LE_CENTRAL 3257 if (hci_is_le_connection_type(addr_type)){ 3258 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3259 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3260 } 3261 #endif 3262 // error => outgoing connection failed 3263 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3264 if (conn != NULL){ 3265 hci_handle_connection_failed(conn, status); 3266 } 3267 } 3268 break; 3269 #endif 3270 #ifdef ENABLE_CLASSIC 3271 case HCI_OPCODE_HCI_INQUIRY: 3272 if (status == ERROR_CODE_SUCCESS) { 3273 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3274 } else { 3275 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3276 } 3277 break; 3278 #endif 3279 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3280 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3281 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3282 if (status == ERROR_CODE_SUCCESS){ 3283 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3284 } else { 3285 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3286 } 3287 break; 3288 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3289 default: 3290 break; 3291 } 3292 } 3293 3294 #ifdef ENABLE_BLE 3295 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3296 gap_event[0] = HCI_EVENT_META_GAP; 3297 gap_event[1] = 36 - 2; 3298 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3299 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3300 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3301 memcpy(&gap_event[3], &hci_event[3], 11); 3302 memset(&gap_event[14], 0, 12); 3303 memcpy(&gap_event[26], &hci_event[14], 7); 3304 memset(&gap_event[33], 0xff, 3); 3305 break; 3306 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3307 memcpy(&gap_event[3], &hci_event[3], 30); 3308 memset(&gap_event[33], 0xff, 3); 3309 break; 3310 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3311 memcpy(&gap_event[3], &hci_event[3], 33); 3312 break; 3313 default: 3314 btstack_unreachable(); 3315 break; 3316 } 3317 } 3318 3319 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3320 bd_addr_t addr; 3321 bd_addr_type_t addr_type; 3322 hci_connection_t * conn; 3323 3324 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3325 uint8_t gap_event[36]; 3326 hci_create_gap_connection_complete_event(hci_event, gap_event); 3327 3328 // read fields 3329 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3330 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3331 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3332 3333 // Connection management 3334 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3335 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3336 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3337 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3338 3339 #ifdef ENABLE_LE_CENTRAL 3340 // handle error: error is reported only to the initiator -> outgoing connection 3341 if (status){ 3342 3343 // handle cancelled outgoing connection 3344 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3345 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3346 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3347 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3348 // reset state 3349 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3350 // get outgoing connection conn struct for direct connect 3351 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3352 conn = gap_get_outgoing_le_connection(); 3353 conn->state = SEND_CREATE_CONNECTION; 3354 } 3355 } 3356 3357 // free connection if cancelled by user (request == IDLE) 3358 if ((conn != NULL) && (hci_stack->le_connecting_request == LE_CONNECTING_IDLE)){ 3359 // remove entry 3360 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3361 btstack_memory_hci_connection_free( conn ); 3362 } 3363 return; 3364 } 3365 #endif 3366 3367 // on success, both hosts receive connection complete event 3368 if (role == HCI_ROLE_MASTER){ 3369 #ifdef ENABLE_LE_CENTRAL 3370 // if we're master, it was an outgoing connection 3371 // note: no hci_connection_t object exists yet for connect with whitelist 3372 3373 // if a identity addresses was used without enhanced connection complete event, 3374 // the connection complete event contains the current random address of the peer device. 3375 // This random address is needed in the case of a re-pairing 3376 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3377 conn = gap_get_outgoing_le_connection(); 3378 // if outgoing connection object is available, check if identity address was used. 3379 // if yes, track resolved random address and provide rpa 3380 // note: we don't update hci le subevent connection complete 3381 if (conn != NULL){ 3382 if (hci_is_le_identity_address_type(conn->address_type)){ 3383 memcpy(&gap_event[20], &gap_event[8], 6); 3384 gap_event[7] = conn->address_type; 3385 reverse_bd_addr(conn->address, &gap_event[8]); 3386 } 3387 } 3388 } 3389 3390 // we're done with it 3391 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3392 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3393 #endif 3394 } else { 3395 #ifdef ENABLE_LE_PERIPHERAL 3396 // if we're slave, it was an incoming connection, advertisements have stopped 3397 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3398 #endif 3399 } 3400 3401 // LE connections are auto-accepted, so just create a connection if there isn't one already 3402 if (!conn){ 3403 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3404 } 3405 3406 // no memory, sorry. 3407 if (!conn){ 3408 return; 3409 } 3410 3411 conn->state = OPEN; 3412 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3413 conn->le_connection_interval = conn_interval; 3414 3415 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3416 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3417 3418 #ifdef ENABLE_LE_PERIPHERAL 3419 if (role == HCI_ROLE_SLAVE){ 3420 hci_update_advertisements_enabled_for_current_roles(); 3421 } 3422 #endif 3423 3424 // init unenhanced att bearer mtu 3425 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3426 conn->att_connection.mtu_exchanged = false; 3427 3428 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3429 3430 // restart timer 3431 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3432 // btstack_run_loop_add_timer(&conn->timeout); 3433 3434 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3435 3436 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3437 hci_emit_event(gap_event, sizeof(gap_event), 1); 3438 3439 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3440 hci_emit_nr_connections_changed(); 3441 } 3442 #endif 3443 3444 #ifdef ENABLE_CLASSIC 3445 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){ 3446 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3447 // LEVEL_4 is tested by l2cap 3448 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3449 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3450 if (level >= LEVEL_3){ 3451 // MITM not possible without keyboard or display 3452 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3453 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3454 3455 // MITM possible if one side has keyboard and the other has keyboard or display 3456 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3457 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3458 3459 // MITM not possible if one side has only display and other side has no keyboard 3460 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3461 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3462 } 3463 // LEVEL 2 requires SSP, which is a given 3464 return true; 3465 } 3466 3467 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3468 // get requested security level 3469 gap_security_level_t requested_security_level = conn->requested_security_level; 3470 if (hci_stack->gap_secure_connections_only_mode){ 3471 requested_security_level = LEVEL_4; 3472 } 3473 3474 // assess security: LEVEL 4 requires SC 3475 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3476 if ((requested_security_level == LEVEL_4) && 3477 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3478 !hci_remote_sc_enabled(conn)){ 3479 log_info("Level 4 required, but SC not supported -> abort"); 3480 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3481 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3482 return; 3483 } 3484 3485 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3486 // - GAP/MOD/NBON/BV-02-C 3487 // - GAP/DM/NBON/BV-01-C 3488 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3489 switch (conn->io_cap_response_auth_req){ 3490 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3491 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3492 if (hci_stack->bondable == false){ 3493 log_info("Dedicated vs. non-bondable -> abort"); 3494 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3495 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3496 return; 3497 } 3498 default: 3499 break; 3500 } 3501 } 3502 3503 // assess security based on io capabilities 3504 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3505 // responder: fully validate io caps of both sides as well as OOB data 3506 bool security_possible = false; 3507 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3508 3509 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3510 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3511 // so we merge the OOB data availability 3512 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3513 if (conn->classic_oob_c_192 != NULL){ 3514 have_oob_data |= 1; 3515 } 3516 if (conn->classic_oob_c_256 != NULL){ 3517 have_oob_data |= 2; 3518 } 3519 // for up to Level 3, either P-192 as well as P-256 will do 3520 // 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 3521 // if remote does not SC, we should not receive P-256 data either 3522 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3523 security_possible = true; 3524 } 3525 // for Level 4, P-256 is needed 3526 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3527 security_possible = true; 3528 } 3529 #endif 3530 3531 if (security_possible == false){ 3532 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3533 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3534 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3535 return; 3536 } 3537 } else { 3538 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3539 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3540 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3541 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3542 log_info("Level 3+ required, but no input/output -> abort"); 3543 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3544 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3545 return; 3546 } 3547 #endif 3548 #endif 3549 } 3550 3551 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3552 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3553 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3554 } else { 3555 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3556 } 3557 #endif 3558 } 3559 3560 #endif 3561 3562 static void event_handler(uint8_t *packet, uint16_t size){ 3563 3564 uint16_t event_length = packet[1]; 3565 3566 // assert packet is complete 3567 if (size != (event_length + 2u)){ 3568 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3569 return; 3570 } 3571 3572 hci_con_handle_t handle; 3573 hci_connection_t * conn; 3574 int i; 3575 3576 #ifdef ENABLE_CLASSIC 3577 hci_link_type_t link_type; 3578 bd_addr_t addr; 3579 bd_addr_type_t addr_type; 3580 #endif 3581 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3582 hci_iso_stream_t * iso_stream; 3583 le_audio_big_t * big; 3584 le_audio_big_sync_t * big_sync; 3585 #endif 3586 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3587 btstack_linked_list_iterator_t it; 3588 #endif 3589 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3590 uint8_t advertising_handle; 3591 #endif 3592 3593 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3594 3595 switch (hci_event_packet_get_type(packet)) { 3596 3597 case HCI_EVENT_COMMAND_COMPLETE: 3598 handle_command_complete_event(packet, size); 3599 break; 3600 3601 case HCI_EVENT_COMMAND_STATUS: 3602 handle_command_status_event(packet, size); 3603 break; 3604 3605 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3606 if (size < 3) return; 3607 uint16_t num_handles = packet[2]; 3608 if (size != (3u + num_handles * 4u)) return; 3609 #ifdef ENABLE_CLASSIC 3610 bool notify_sco = false; 3611 #endif 3612 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3613 bool notify_iso = false; 3614 #endif 3615 uint16_t offset = 3; 3616 for (i=0; i<num_handles;i++){ 3617 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3618 offset += 2u; 3619 uint16_t num_packets = little_endian_read_16(packet, offset); 3620 offset += 2u; 3621 3622 conn = hci_connection_for_handle(handle); 3623 if (conn != NULL) { 3624 3625 if (conn->num_packets_sent >= num_packets) { 3626 conn->num_packets_sent -= num_packets; 3627 } else { 3628 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3629 conn->num_packets_sent = 0; 3630 } 3631 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3632 #ifdef ENABLE_CLASSIC 3633 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3634 notify_sco = true; 3635 } 3636 #endif 3637 } 3638 3639 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3640 hci_controller_dump_packets(); 3641 #endif 3642 3643 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3644 if (conn == NULL){ 3645 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3646 if (iso_stream != NULL){ 3647 if (iso_stream->num_packets_sent >= num_packets) { 3648 iso_stream->num_packets_sent -= num_packets; 3649 } else { 3650 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3651 iso_stream->num_packets_sent = 0; 3652 } 3653 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3654 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3655 if (big != NULL){ 3656 big->num_completed_timestamp_current_valid = true; 3657 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3658 } 3659 } 3660 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3661 num_packets, handle, iso_stream->num_packets_sent); 3662 notify_iso = true; 3663 } 3664 } 3665 #endif 3666 } 3667 3668 #ifdef ENABLE_CLASSIC 3669 if (notify_sco){ 3670 hci_notify_if_sco_can_send_now(); 3671 } 3672 #endif 3673 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3674 if (notify_iso){ 3675 hci_iso_notify_can_send_now(); 3676 } 3677 #endif 3678 break; 3679 } 3680 3681 #ifdef ENABLE_CLASSIC 3682 case HCI_EVENT_FLUSH_OCCURRED: 3683 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3684 handle = hci_event_flush_occurred_get_handle(packet); 3685 conn = hci_connection_for_handle(handle); 3686 if (conn) { 3687 log_info("Flush occurred, disconnect 0x%04x", handle); 3688 conn->state = SEND_DISCONNECT; 3689 } 3690 break; 3691 3692 case HCI_EVENT_INQUIRY_COMPLETE: 3693 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3694 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3695 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3696 hci_emit_event(event, sizeof(event), 1); 3697 } 3698 break; 3699 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3700 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3701 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3702 } 3703 break; 3704 case HCI_EVENT_CONNECTION_REQUEST: 3705 reverse_bd_addr(&packet[2], addr); 3706 link_type = (hci_link_type_t) packet[11]; 3707 3708 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3709 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3710 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3711 bd_addr_copy(hci_stack->decline_addr, addr); 3712 break; 3713 } 3714 3715 if (hci_stack->gap_classic_accept_callback != NULL){ 3716 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3717 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3718 bd_addr_copy(hci_stack->decline_addr, addr); 3719 break; 3720 } 3721 } 3722 3723 // TODO: eval COD 8-10 3724 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3725 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3726 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3727 if (!conn) { 3728 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3729 } 3730 if (!conn) { 3731 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3732 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3733 bd_addr_copy(hci_stack->decline_addr, addr); 3734 hci_run(); 3735 // avoid event to higher layer 3736 return; 3737 } 3738 conn->state = RECEIVED_CONNECTION_REQUEST; 3739 // store info about eSCO 3740 if (link_type == HCI_LINK_TYPE_ESCO){ 3741 conn->remote_supported_features[0] |= 1; 3742 } 3743 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3744 if (addr_type == BD_ADDR_TYPE_SCO){ 3745 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3746 // ACL exists unless fuzzing 3747 if (acl_conn != NULL) { 3748 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3749 } 3750 } 3751 hci_run(); 3752 break; 3753 3754 case HCI_EVENT_CONNECTION_COMPLETE: 3755 // Connection management 3756 reverse_bd_addr(&packet[5], addr); 3757 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3758 addr_type = BD_ADDR_TYPE_ACL; 3759 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3760 if (conn) { 3761 switch (conn->state){ 3762 // expected states 3763 case ACCEPTED_CONNECTION_REQUEST: 3764 case SENT_CREATE_CONNECTION: 3765 break; 3766 // unexpected state -> ignore 3767 default: 3768 // don't forward event to app 3769 return; 3770 } 3771 if (!packet[2]){ 3772 conn->state = OPEN; 3773 conn->con_handle = little_endian_read_16(packet, 3); 3774 3775 // trigger write supervision timeout if we're master 3776 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3777 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3778 } 3779 3780 // trigger write automatic flush timeout 3781 if (hci_stack->automatic_flush_timeout != 0){ 3782 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3783 } 3784 3785 // restart timer 3786 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3787 btstack_run_loop_add_timer(&conn->timeout); 3788 3789 // trigger remote features for dedicated bonding 3790 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3791 hci_trigger_remote_features_for_connection(conn); 3792 } 3793 3794 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3795 3796 hci_emit_nr_connections_changed(); 3797 } else { 3798 // connection failed 3799 hci_handle_connection_failed(conn, packet[2]); 3800 } 3801 } 3802 break; 3803 3804 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3805 reverse_bd_addr(&packet[5], addr); 3806 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3807 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3808 3809 // SCO exists unless fuzzer 3810 if (conn == NULL) break; 3811 3812 if (packet[2] != ERROR_CODE_SUCCESS){ 3813 // connection failed, remove entry 3814 hci_handle_connection_failed(conn, packet[2]); 3815 break; 3816 } 3817 3818 conn->state = OPEN; 3819 conn->con_handle = little_endian_read_16(packet, 3); 3820 3821 // update sco payload length for eSCO connections 3822 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3823 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3824 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3825 } 3826 3827 #ifdef ENABLE_SCO_OVER_HCI 3828 // update SCO 3829 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3830 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3831 } 3832 // trigger can send now 3833 if (hci_have_usb_transport()){ 3834 hci_stack->sco_can_send_now = true; 3835 } 3836 3837 // setup implict sco flow control 3838 conn->sco_tx_ready = 0; 3839 conn->sco_tx_active = 0; 3840 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3841 3842 #endif 3843 #ifdef HAVE_SCO_TRANSPORT 3844 // configure sco transport 3845 if (hci_stack->sco_transport != NULL){ 3846 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3847 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3848 } 3849 #endif 3850 break; 3851 3852 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3853 handle = little_endian_read_16(packet, 3); 3854 conn = hci_connection_for_handle(handle); 3855 if (!conn) break; 3856 if (!packet[2]){ 3857 const uint8_t * features = &packet[5]; 3858 hci_handle_remote_features_page_0(conn, features); 3859 3860 // read extended features if possible 3861 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3862 && ((conn->remote_supported_features[0] & 2) != 0)) { 3863 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3864 break; 3865 } 3866 } 3867 hci_handle_remote_features_received(conn); 3868 break; 3869 3870 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3871 handle = little_endian_read_16(packet, 3); 3872 conn = hci_connection_for_handle(handle); 3873 if (!conn) break; 3874 // status = ok, page = 1 3875 if (!packet[2]) { 3876 uint8_t page_number = packet[5]; 3877 uint8_t maximum_page_number = packet[6]; 3878 const uint8_t * features = &packet[7]; 3879 bool done = false; 3880 switch (page_number){ 3881 case 1: 3882 hci_handle_remote_features_page_1(conn, features); 3883 if (maximum_page_number >= 2){ 3884 // get Secure Connections (Controller) from Page 2 if available 3885 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3886 } else { 3887 // otherwise, assume SC (Controller) == SC (Host) 3888 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3889 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3890 } 3891 done = true; 3892 } 3893 break; 3894 case 2: 3895 hci_handle_remote_features_page_2(conn, features); 3896 done = true; 3897 break; 3898 default: 3899 break; 3900 } 3901 if (!done) break; 3902 } 3903 hci_handle_remote_features_received(conn); 3904 break; 3905 3906 case HCI_EVENT_LINK_KEY_REQUEST: 3907 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3908 hci_event_link_key_request_get_bd_addr(packet, addr); 3909 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3910 if (!conn) break; 3911 3912 // lookup link key in db if not cached 3913 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3914 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3915 } 3916 3917 // response sent by hci_run() 3918 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3919 #endif 3920 break; 3921 3922 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3923 hci_event_link_key_request_get_bd_addr(packet, addr); 3924 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3925 if (!conn) break; 3926 3927 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3928 3929 // CVE-2020-26555: ignore NULL link key 3930 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3931 if (btstack_is_null(&packet[8], 16)) break; 3932 3933 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3934 // Change Connection Encryption keeps link key type 3935 if (link_key_type != CHANGED_COMBINATION_KEY){ 3936 conn->link_key_type = link_key_type; 3937 } 3938 3939 // cache link key. link keys stored in little-endian format for legacy reasons 3940 memcpy(&conn->link_key, &packet[8], 16); 3941 3942 // only store link key: 3943 // - if bondable enabled 3944 if (hci_stack->bondable == false) break; 3945 // - if security level sufficient 3946 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3947 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3948 break; 3949 } 3950 3951 case HCI_EVENT_PIN_CODE_REQUEST: 3952 hci_event_pin_code_request_get_bd_addr(packet, addr); 3953 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3954 if (!conn) break; 3955 3956 hci_pairing_started(conn, false); 3957 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3958 if (!hci_stack->bondable ){ 3959 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3960 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3961 hci_run(); 3962 return; 3963 } 3964 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3965 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3966 log_info("Level 4 required, but SC not supported -> abort"); 3967 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3968 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3969 hci_run(); 3970 return; 3971 } 3972 break; 3973 3974 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3975 hci_event_io_capability_response_get_bd_addr(packet, addr); 3976 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3977 if (!conn) break; 3978 3979 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3980 hci_pairing_started(conn, true); 3981 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3982 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3983 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3984 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3985 #endif 3986 break; 3987 3988 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3989 hci_event_io_capability_response_get_bd_addr(packet, addr); 3990 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3991 if (!conn) break; 3992 3993 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3994 hci_connection_timestamp(conn); 3995 hci_pairing_started(conn, true); 3996 break; 3997 3998 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3999 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4000 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4001 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4002 if (!conn) break; 4003 4004 hci_connection_timestamp(conn); 4005 4006 hci_pairing_started(conn, true); 4007 4008 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4009 break; 4010 #endif 4011 4012 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4013 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4014 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4015 if (!conn) break; 4016 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4017 if (hci_stack->ssp_auto_accept){ 4018 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4019 }; 4020 } else { 4021 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4022 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4023 // don't forward event to app 4024 hci_run(); 4025 return; 4026 } 4027 break; 4028 4029 case HCI_EVENT_USER_PASSKEY_REQUEST: 4030 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4031 if (hci_stack->ssp_auto_accept){ 4032 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4033 }; 4034 break; 4035 4036 case HCI_EVENT_MODE_CHANGE: 4037 handle = hci_event_mode_change_get_handle(packet); 4038 conn = hci_connection_for_handle(handle); 4039 if (!conn) break; 4040 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4041 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4042 break; 4043 #endif 4044 4045 case HCI_EVENT_ENCRYPTION_CHANGE: 4046 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4047 handle = hci_event_encryption_change_get_connection_handle(packet); 4048 conn = hci_connection_for_handle(handle); 4049 if (!conn) break; 4050 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4051 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4052 if (encryption_enabled){ 4053 if (hci_is_le_connection(conn)){ 4054 // For LE, we accept connection as encrypted 4055 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4056 } 4057 #ifdef ENABLE_CLASSIC 4058 else { 4059 4060 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4061 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4062 bool connected_uses_aes_ccm = encryption_enabled == 2; 4063 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4064 #ifdef ENABLE_TESTING_SUPPORT 4065 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4066 // - GAP/SEC/SEM/BI-31-C 4067 // - GAP/SEC/SEM/BI-32-C 4068 // - GAP/SEC/SEM/BI-33-C 4069 4070 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4071 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4072 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4073 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4074 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4075 } 4076 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4077 conn->link_key_type, new_link_key_type); 4078 conn->link_key_type = new_link_key_type; 4079 #else 4080 log_info("SC during pairing, but only E0 now -> abort"); 4081 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4082 break; 4083 #endif 4084 } 4085 4086 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4087 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4088 if (connected_uses_aes_ccm){ 4089 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4090 } 4091 #else 4092 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4093 // with encryption key size > hci_stack->gap_required_encyrption_key_size 4094 // for all operations that require any security. See BIAS attacks. 4095 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4096 #endif 4097 // validate encryption key size 4098 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4099 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4100 // already got encryption key size 4101 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4102 } else { 4103 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4104 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4105 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4106 } else { 4107 // if not, pretend everything is perfect 4108 hci_handle_read_encryption_key_size_complete(conn, 16); 4109 } 4110 } 4111 } 4112 #endif 4113 } else { 4114 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4115 } 4116 } else { 4117 #ifdef ENABLE_CLASSIC 4118 if (!hci_is_le_connection(conn)){ 4119 uint8_t status = hci_event_encryption_change_get_status(packet); 4120 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4121 conn->bonding_flags &= ~BONDING_DEDICATED; 4122 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4123 conn->bonding_status = status; 4124 } 4125 // trigger security update -> level 0 4126 hci_handle_mutual_authentication_completed(conn); 4127 } 4128 #endif 4129 } 4130 4131 break; 4132 4133 #ifdef ENABLE_CLASSIC 4134 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4135 handle = hci_event_authentication_complete_get_connection_handle(packet); 4136 conn = hci_connection_for_handle(handle); 4137 if (!conn) break; 4138 4139 // clear authentication active flag 4140 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4141 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4142 4143 // authenticated only if auth status == 0 4144 if (hci_event_authentication_complete_get_status(packet) == 0){ 4145 // authenticated 4146 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4147 4148 // If not already encrypted, start encryption 4149 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4150 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4151 break; 4152 } 4153 } 4154 4155 // emit updated security level (will be 0 if not authenticated) 4156 hci_handle_mutual_authentication_completed(conn); 4157 break; 4158 4159 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4160 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4161 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4162 if (!conn) break; 4163 4164 // treat successfully paired connection as authenticated 4165 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4166 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4167 } 4168 4169 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4170 break; 4171 #endif 4172 4173 // HCI_EVENT_DISCONNECTION_COMPLETE 4174 // has been split, to first notify stack before shutting connection down 4175 // see end of function, too. 4176 case HCI_EVENT_DISCONNECTION_COMPLETE: 4177 if (packet[2]) break; // status != 0 4178 handle = little_endian_read_16(packet, 3); 4179 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4180 if (hci_stack->acl_fragmentation_total_size > 0u) { 4181 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4182 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4183 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4184 hci_stack->acl_fragmentation_total_size = 0; 4185 hci_stack->acl_fragmentation_pos = 0; 4186 if (release_buffer){ 4187 hci_release_packet_buffer(); 4188 } 4189 } 4190 } 4191 4192 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4193 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4194 if (hci_stack->iso_fragmentation_total_size > 0u) { 4195 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4196 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4197 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4198 hci_stack->iso_fragmentation_total_size = 0; 4199 hci_stack->iso_fragmentation_pos = 0; 4200 if (release_buffer){ 4201 hci_release_packet_buffer(); 4202 } 4203 } 4204 } 4205 4206 // finalize iso stream for CIS handle 4207 iso_stream = hci_iso_stream_for_con_handle(handle); 4208 if (iso_stream != NULL){ 4209 hci_iso_stream_finalize(iso_stream); 4210 break; 4211 } 4212 4213 // finalize iso stream(s) for ACL handle 4214 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4215 while (btstack_linked_list_iterator_has_next(&it)){ 4216 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4217 if (iso_stream->acl_handle == handle ) { 4218 hci_iso_stream_finalize(iso_stream); 4219 } 4220 } 4221 #endif 4222 4223 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4224 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4225 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4226 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4227 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4228 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4229 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4230 hci_stack->num_cmd_packets = 1; 4231 } 4232 #endif 4233 4234 conn = hci_connection_for_handle(handle); 4235 if (!conn) break; 4236 #ifdef ENABLE_CLASSIC 4237 // pairing failed if it was ongoing 4238 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4239 #endif 4240 4241 // emit dedicatd bonding event 4242 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4243 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4244 } 4245 4246 // mark connection for shutdown, stop timers, reset state 4247 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4248 hci_connection_stop_timer(conn); 4249 hci_connection_init(conn); 4250 4251 #ifdef ENABLE_BLE 4252 #ifdef ENABLE_LE_PERIPHERAL 4253 // re-enable advertisements for le connections if active 4254 if (hci_is_le_connection(conn)){ 4255 hci_update_advertisements_enabled_for_current_roles(); 4256 } 4257 #endif 4258 #endif 4259 break; 4260 4261 case HCI_EVENT_HARDWARE_ERROR: 4262 log_error("Hardware Error: 0x%02x", packet[2]); 4263 if (hci_stack->hardware_error_callback){ 4264 (*hci_stack->hardware_error_callback)(packet[2]); 4265 } else { 4266 // if no special requests, just reboot stack 4267 hci_power_control_off(); 4268 hci_power_control_on(); 4269 } 4270 break; 4271 4272 #ifdef ENABLE_CLASSIC 4273 case HCI_EVENT_ROLE_CHANGE: 4274 if (packet[2]) break; // status != 0 4275 reverse_bd_addr(&packet[3], addr); 4276 addr_type = BD_ADDR_TYPE_ACL; 4277 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4278 if (!conn) break; 4279 conn->role = (hci_role_t) packet[9]; 4280 break; 4281 #endif 4282 4283 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4284 // release packet buffer only for asynchronous transport and if there are not further fragments 4285 if (hci_transport_synchronous()) { 4286 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4287 return; // instead of break: to avoid re-entering hci_run() 4288 } 4289 hci_stack->acl_fragmentation_tx_active = 0; 4290 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4291 hci_stack->iso_fragmentation_tx_active = 0; 4292 if (hci_stack->iso_fragmentation_total_size) break; 4293 #endif 4294 if (hci_stack->acl_fragmentation_total_size) break; 4295 4296 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4297 btstack_assert(hci_stack->hci_packet_buffer_reserved); 4298 hci_stack->hci_packet_buffer_reserved = false; 4299 4300 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4301 hci_iso_notify_can_send_now(); 4302 #endif 4303 // L2CAP receives this event via the hci_emit_event below 4304 4305 #ifdef ENABLE_CLASSIC 4306 // For SCO, we do the can_send_now_check here 4307 hci_notify_if_sco_can_send_now(); 4308 #endif 4309 break; 4310 4311 #ifdef ENABLE_CLASSIC 4312 case HCI_EVENT_SCO_CAN_SEND_NOW: 4313 // For SCO, we do the can_send_now_check here 4314 hci_stack->sco_can_send_now = true; 4315 hci_notify_if_sco_can_send_now(); 4316 return; 4317 4318 // explode inquriy results for easier consumption 4319 case HCI_EVENT_INQUIRY_RESULT: 4320 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4321 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4322 gap_inquiry_explode(packet, size); 4323 break; 4324 #endif 4325 4326 #ifdef ENABLE_BLE 4327 case HCI_EVENT_LE_META: 4328 switch (packet[2]){ 4329 #ifdef ENABLE_LE_CENTRAL 4330 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4331 if (!hci_stack->le_scanning_enabled) break; 4332 le_handle_advertisement_report(packet, size); 4333 break; 4334 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4335 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4336 if (!hci_stack->le_scanning_enabled) break; 4337 le_handle_extended_advertisement_report(packet, size); 4338 break; 4339 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4340 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4341 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4342 break; 4343 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4344 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4345 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4346 while (btstack_linked_list_iterator_has_next(&it)) { 4347 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4348 if (advertising_set->advertising_handle == advertising_handle){ 4349 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4350 } 4351 } 4352 break; 4353 #endif 4354 #endif 4355 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4356 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4357 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4358 hci_handle_le_connection_complete_event(packet); 4359 break; 4360 4361 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4362 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4363 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4364 conn = hci_connection_for_handle(handle); 4365 if (!conn) break; 4366 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4367 break; 4368 4369 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4370 // connection 4371 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4372 conn = hci_connection_for_handle(handle); 4373 if (conn) { 4374 // read arguments 4375 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4376 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4377 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4378 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4379 4380 // validate against current connection parameter range 4381 le_connection_parameter_range_t existing_range; 4382 gap_get_connection_parameter_range(&existing_range); 4383 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4384 if (update_parameter){ 4385 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4386 conn->le_conn_interval_min = le_conn_interval_min; 4387 conn->le_conn_interval_max = le_conn_interval_max; 4388 conn->le_conn_latency = le_conn_latency; 4389 conn->le_supervision_timeout = le_supervision_timeout; 4390 } else { 4391 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4392 } 4393 } 4394 break; 4395 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4396 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4397 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4398 conn = hci_connection_for_handle(handle); 4399 if (conn) { 4400 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4401 } 4402 break; 4403 #endif 4404 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4405 case HCI_SUBEVENT_LE_CIS_REQUEST: 4406 // incoming CIS request, allocate iso stream object and cache metadata 4407 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4408 hci_subevent_le_cis_request_get_cig_id(packet), 4409 hci_subevent_le_cis_request_get_cis_id(packet)); 4410 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4411 if (iso_stream != NULL){ 4412 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4413 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4414 } 4415 break; 4416 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4417 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4418 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4419 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4420 iso_stream = hci_iso_stream_for_con_handle(handle); 4421 btstack_assert(iso_stream != NULL); 4422 // track connection info 4423 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4424 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4425 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4426 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4427 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4428 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4429 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4430 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4431 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4432 // CIS Accept by Peripheral 4433 if (status == ERROR_CODE_SUCCESS){ 4434 if (iso_stream->max_sdu_p_to_c > 0){ 4435 // we're peripheral and we will send data 4436 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4437 } else { 4438 // we're peripheral and we will only receive data 4439 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4440 } 4441 } else { 4442 hci_cis_handle_created(iso_stream, status); 4443 } 4444 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4445 } else { 4446 // CIG Setup by Central 4447 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4448 btstack_assert(cig != NULL); 4449 // update iso stream state 4450 if (status == ERROR_CODE_SUCCESS){ 4451 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4452 } else { 4453 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4454 } 4455 // update cig state 4456 uint8_t i; 4457 for (i=0;i<cig->num_cis;i++){ 4458 if (cig->cis_con_handles[i] == handle){ 4459 cig->cis_setup_active[i] = false; 4460 if (status == ERROR_CODE_SUCCESS){ 4461 cig->cis_established[i] = true; 4462 } else { 4463 hci_cis_handle_created(iso_stream, status); 4464 } 4465 } 4466 } 4467 4468 // trigger iso path setup if complete 4469 bool cis_setup_active = false; 4470 for (i=0;i<cig->num_cis;i++){ 4471 cis_setup_active |= cig->cis_setup_active[i]; 4472 } 4473 if (cis_setup_active == false){ 4474 cig->state_vars.next_cis = 0; 4475 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4476 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4477 } 4478 } 4479 } 4480 break; 4481 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4482 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4483 big = hci_big_for_handle(packet[4]); 4484 if (big != NULL){ 4485 uint8_t status = packet[3]; 4486 if (status == ERROR_CODE_SUCCESS){ 4487 // store bis_con_handles and trigger iso path setup 4488 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4489 uint8_t i; 4490 for (i=0;i<num_bis;i++){ 4491 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4492 big->bis_con_handles[i] = bis_handle; 4493 // assign bis handle 4494 btstack_linked_list_iterator_t it; 4495 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4496 while (btstack_linked_list_iterator_has_next(&it)){ 4497 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4498 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4499 (iso_stream->group_id == big->big_handle)){ 4500 iso_stream->cis_handle = bis_handle; 4501 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4502 break; 4503 } 4504 } 4505 } 4506 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4507 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4508 big->state_vars.next_bis = 0; 4509 } 4510 } else { 4511 // create BIG failed or has been stopped by us 4512 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4513 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4514 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4515 hci_emit_big_created(big, status); 4516 } else { 4517 hci_emit_big_terminated(big); 4518 } 4519 } 4520 } 4521 break; 4522 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4523 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4524 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4525 if (big != NULL){ 4526 // finalize associated ISO streams 4527 btstack_linked_list_iterator_t it; 4528 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4529 while (btstack_linked_list_iterator_has_next(&it)){ 4530 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4531 if (iso_stream->group_id == big->big_handle){ 4532 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4533 btstack_linked_list_iterator_remove(&it); 4534 btstack_memory_hci_iso_stream_free(iso_stream); 4535 } 4536 } 4537 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4538 switch (big->state){ 4539 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4540 hci_emit_big_created(big, big->state_vars.status); 4541 break; 4542 default: 4543 hci_emit_big_terminated(big); 4544 break; 4545 } 4546 } 4547 break; 4548 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4549 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4550 big_sync = hci_big_sync_for_handle(packet[4]); 4551 if (big_sync != NULL){ 4552 uint8_t status = packet[3]; 4553 uint8_t big_handle = packet[4]; 4554 if (status == ERROR_CODE_SUCCESS){ 4555 // store bis_con_handles and trigger iso path setup 4556 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4557 uint8_t i; 4558 for (i=0;i<num_bis;i++){ 4559 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4560 big_sync->bis_con_handles[i] = bis_handle; 4561 // setup iso_stream_t 4562 btstack_linked_list_iterator_t it; 4563 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4564 while (btstack_linked_list_iterator_has_next(&it)){ 4565 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4566 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4567 (iso_stream->group_id == big_sync->big_handle)){ 4568 iso_stream->cis_handle = bis_handle; 4569 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4570 break; 4571 } 4572 } 4573 } 4574 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4575 // trigger iso path setup 4576 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4577 big_sync->state_vars.next_bis = 0; 4578 } 4579 } else { 4580 // create BIG Sync failed or has been stopped by us 4581 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4582 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4583 hci_emit_big_sync_created(big_sync, status); 4584 } else { 4585 hci_emit_big_sync_stopped(big_handle); 4586 } 4587 } 4588 } 4589 break; 4590 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4591 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4592 big_sync = hci_big_sync_for_handle(packet[4]); 4593 if (big_sync != NULL){ 4594 uint8_t big_handle = packet[4]; 4595 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4596 hci_emit_big_sync_stopped(big_handle); 4597 } 4598 break; 4599 #endif 4600 default: 4601 break; 4602 } 4603 break; 4604 #endif 4605 case HCI_EVENT_VENDOR_SPECIFIC: 4606 // Vendor specific commands often create vendor specific event instead of num completed packets 4607 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4608 switch (hci_stack->manufacturer){ 4609 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4610 hci_stack->num_cmd_packets = 1; 4611 break; 4612 default: 4613 break; 4614 } 4615 break; 4616 default: 4617 break; 4618 } 4619 4620 handle_event_for_current_stack_state(packet, size); 4621 4622 // notify upper stack 4623 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4624 4625 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4626 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4627 handle = little_endian_read_16(packet, 3); 4628 hci_connection_t * aConn = hci_connection_for_handle(handle); 4629 // discard connection if app did not trigger a reconnect in the event handler 4630 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4631 hci_shutdown_connection(aConn); 4632 } 4633 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4634 hci_controller_dump_packets(); 4635 #endif 4636 } 4637 4638 // execute main loop 4639 hci_run(); 4640 } 4641 4642 #ifdef ENABLE_CLASSIC 4643 4644 static void sco_handler(uint8_t * packet, uint16_t size){ 4645 // lookup connection struct 4646 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4647 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4648 if (!conn) return; 4649 4650 #ifdef ENABLE_SCO_OVER_HCI 4651 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4652 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4653 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4654 packet[2] = 0x3c; 4655 memmove(&packet[3], &packet[23], 63); 4656 size = 63; 4657 } 4658 } 4659 4660 if (hci_have_usb_transport()){ 4661 // Nothing to do 4662 } else { 4663 // 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); 4664 if (hci_stack->synchronous_flow_control_enabled == 0){ 4665 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4666 uint16_t max_sco_packets = btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4667 if (conn->sco_tx_active == 0){ 4668 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4669 conn->sco_tx_active = 1; 4670 conn->sco_tx_ready = max_sco_packets; 4671 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4672 hci_notify_if_sco_can_send_now(); 4673 } 4674 } else { 4675 if (conn->sco_tx_ready < max_sco_packets){ 4676 conn->sco_tx_ready++; 4677 } 4678 hci_notify_if_sco_can_send_now(); 4679 } 4680 } 4681 } 4682 #endif 4683 4684 // deliver to app 4685 if (hci_stack->sco_packet_handler) { 4686 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4687 } 4688 4689 #ifdef HAVE_SCO_TRANSPORT 4690 // We can send one packet for each received packet 4691 conn->sco_tx_ready++; 4692 hci_notify_if_sco_can_send_now(); 4693 #endif 4694 4695 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4696 conn->num_packets_completed++; 4697 hci_stack->host_completed_packets = 1; 4698 hci_run(); 4699 #endif 4700 } 4701 #endif 4702 4703 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4704 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4705 // propagate ISO packets received as ACL 4706 hci_iso_stream_t * iso_stream = NULL; 4707 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4708 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4709 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4710 if (iso_stream != NULL){ 4711 packet_type = HCI_ISO_DATA_PACKET; 4712 } 4713 } 4714 #endif 4715 4716 hci_dump_packet(packet_type, 1, packet, size); 4717 switch (packet_type) { 4718 case HCI_EVENT_PACKET: 4719 event_handler(packet, size); 4720 break; 4721 case HCI_ACL_DATA_PACKET: 4722 acl_handler(packet, size); 4723 break; 4724 #ifdef ENABLE_CLASSIC 4725 case HCI_SCO_DATA_PACKET: 4726 sco_handler(packet, size); 4727 break; 4728 #endif 4729 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4730 case HCI_ISO_DATA_PACKET: 4731 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4732 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4733 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4734 } 4735 hci_iso_packet_handler(iso_stream, packet, size); 4736 break; 4737 #endif 4738 default: 4739 break; 4740 } 4741 } 4742 4743 /** 4744 * @brief Add event packet handler. 4745 */ 4746 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4747 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4748 } 4749 4750 /** 4751 * @brief Remove event packet handler. 4752 */ 4753 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4754 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4755 } 4756 4757 /** Register HCI packet handlers */ 4758 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4759 hci_stack->acl_packet_handler = handler; 4760 } 4761 4762 #ifdef ENABLE_CLASSIC 4763 /** 4764 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4765 */ 4766 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4767 hci_stack->sco_packet_handler = handler; 4768 } 4769 #endif 4770 4771 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4772 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4773 hci_stack->iso_packet_handler = handler; 4774 } 4775 #endif 4776 4777 static void hci_state_reset(void){ 4778 // no connections yet 4779 hci_stack->connections = NULL; 4780 4781 // keep discoverable/connectable as this has been requested by the client(s) 4782 // hci_stack->discoverable = 0; 4783 // hci_stack->connectable = 0; 4784 // hci_stack->bondable = 1; 4785 // hci_stack->own_addr_type = 0; 4786 4787 // buffer is free 4788 hci_stack->hci_packet_buffer_reserved = false; 4789 4790 // no pending cmds 4791 hci_stack->decline_reason = 0; 4792 4793 hci_stack->secure_connections_active = false; 4794 4795 #ifdef ENABLE_CLASSIC 4796 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4797 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4798 4799 hci_stack->gap_tasks_classic = 4800 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4801 GAP_TASK_SET_CLASS_OF_DEVICE | 4802 GAP_TASK_SET_LOCAL_NAME | 4803 GAP_TASK_SET_EIR_DATA | 4804 GAP_TASK_WRITE_SCAN_ENABLE | 4805 GAP_TASK_WRITE_PAGE_TIMEOUT; 4806 #endif 4807 4808 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4809 hci_stack->classic_read_local_oob_data = false; 4810 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4811 #endif 4812 4813 // LE 4814 #ifdef ENABLE_BLE 4815 memset(hci_stack->le_random_address, 0, 6); 4816 hci_stack->le_random_address_set = 0; 4817 #endif 4818 #ifdef ENABLE_LE_CENTRAL 4819 hci_stack->le_scanning_active = false; 4820 hci_stack->le_scanning_param_update = true; 4821 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4822 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4823 hci_stack->le_whitelist_capacity = 0; 4824 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4825 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4826 #endif 4827 #endif 4828 #ifdef ENABLE_LE_PERIPHERAL 4829 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4830 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4831 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4832 } 4833 if (hci_stack->le_advertisements_data != NULL){ 4834 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4835 } 4836 #endif 4837 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4838 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4839 #endif 4840 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4841 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4842 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4843 #endif 4844 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4845 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4846 #endif 4847 } 4848 4849 #ifdef ENABLE_CLASSIC 4850 /** 4851 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4852 */ 4853 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4854 // store and open remote device db 4855 hci_stack->link_key_db = link_key_db; 4856 if (hci_stack->link_key_db) { 4857 hci_stack->link_key_db->open(); 4858 } 4859 } 4860 #endif 4861 4862 void hci_init(const hci_transport_t *transport, const void *config){ 4863 4864 #ifdef HAVE_MALLOC 4865 if (!hci_stack) { 4866 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4867 } 4868 #else 4869 hci_stack = &hci_stack_static; 4870 #endif 4871 memset(hci_stack, 0, sizeof(hci_stack_t)); 4872 4873 // reference to use transport layer implementation 4874 hci_stack->hci_transport = transport; 4875 4876 // reference to used config 4877 hci_stack->config = config; 4878 4879 // setup pointer for outgoing packet buffer 4880 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4881 4882 // max acl payload size defined in config.h 4883 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4884 4885 // register packet handlers with transport 4886 transport->register_packet_handler(&packet_handler); 4887 4888 hci_stack->state = HCI_STATE_OFF; 4889 4890 // class of device 4891 hci_stack->class_of_device = 0x007a020c; // Smartphone 4892 4893 // bondable by default 4894 hci_stack->bondable = 1; 4895 4896 #ifdef ENABLE_CLASSIC 4897 // classic name 4898 hci_stack->local_name = default_classic_name; 4899 4900 // Master slave policy 4901 hci_stack->master_slave_policy = 1; 4902 4903 // Allow Role Switch 4904 hci_stack->allow_role_switch = 1; 4905 4906 // Default / minimum security level = 2 4907 hci_stack->gap_security_level = LEVEL_2; 4908 4909 // Default Security Mode 4 4910 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4911 4912 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4913 hci_stack->gap_required_encyrption_key_size = 7; 4914 4915 // Link Supervision Timeout 4916 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4917 4918 // All ACL packet types are enabledh 4919 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4920 #endif 4921 4922 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4923 hci_stack->ssp_enable = 1; 4924 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4925 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4926 hci_stack->ssp_auto_accept = 1; 4927 4928 // Secure Connections: enable (requires support from Controller) 4929 hci_stack->secure_connections_enable = true; 4930 4931 // voice setting - signed 16 bit pcm data with CVSD over the air 4932 hci_stack->sco_voice_setting = 0x60; 4933 4934 #ifdef ENABLE_BLE 4935 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4936 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4937 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4938 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4939 hci_stack->le_connection_latency = 4; // 4 4940 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4941 hci_stack->le_minimum_ce_length = 0; // 0 ms 4942 hci_stack->le_maximum_ce_length = 0; // 0 ms 4943 #endif 4944 4945 #ifdef ENABLE_LE_CENTRAL 4946 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4947 4948 // default LE Scanning 4949 hci_stack->le_scan_type = 0x01; // active 4950 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4951 hci_stack->le_scan_window = 0x30; // 30 ms 4952 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4953 #endif 4954 4955 #ifdef ENABLE_LE_PERIPHERAL 4956 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4957 4958 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4959 hci_stack->le_advertisements_interval_min = 0x0800; 4960 hci_stack->le_advertisements_interval_max = 0x0800; 4961 hci_stack->le_advertisements_type = 0; 4962 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4963 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4964 hci_stack->le_advertisements_channel_map = 0x07; 4965 hci_stack->le_advertisements_filter_policy = 0; 4966 #endif 4967 4968 // connection parameter range used to answer connection parameter update requests in l2cap 4969 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4970 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4971 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4972 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4973 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4974 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4975 4976 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4977 hci_stack->iso_packets_to_queue = 1; 4978 #endif 4979 4980 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4981 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 4982 #endif 4983 4984 hci_state_reset(); 4985 } 4986 4987 void hci_deinit(void){ 4988 btstack_run_loop_remove_timer(&hci_stack->timeout); 4989 #ifdef HAVE_MALLOC 4990 if (hci_stack) { 4991 free(hci_stack); 4992 } 4993 #endif 4994 hci_stack = NULL; 4995 4996 #ifdef ENABLE_CLASSIC 4997 disable_l2cap_timeouts = 0; 4998 #endif 4999 } 5000 5001 /** 5002 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5003 */ 5004 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5005 hci_stack->chipset = chipset_driver; 5006 5007 // reset chipset driver - init is also called on power_up 5008 if (hci_stack->chipset && hci_stack->chipset->init){ 5009 hci_stack->chipset->init(hci_stack->config); 5010 } 5011 } 5012 5013 void hci_enable_custom_pre_init(void){ 5014 hci_stack->chipset_pre_init = true; 5015 } 5016 5017 /** 5018 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5019 */ 5020 void hci_set_control(const btstack_control_t *hardware_control){ 5021 // references to used control implementation 5022 hci_stack->control = hardware_control; 5023 // init with transport config 5024 hardware_control->init(hci_stack->config); 5025 } 5026 5027 static void hci_discard_connections(void){ 5028 btstack_linked_list_iterator_t it; 5029 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5030 while (btstack_linked_list_iterator_has_next(&it)){ 5031 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5032 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5033 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5034 hci_shutdown_connection(connection); 5035 } 5036 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5037 while (hci_stack->iso_streams != NULL){ 5038 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5039 } 5040 #endif 5041 } 5042 5043 void hci_close(void){ 5044 5045 #ifdef ENABLE_CLASSIC 5046 // close remote device db 5047 if (hci_stack->link_key_db) { 5048 hci_stack->link_key_db->close(); 5049 } 5050 #endif 5051 5052 hci_discard_connections(); 5053 5054 hci_power_control(HCI_POWER_OFF); 5055 5056 #ifdef HAVE_MALLOC 5057 free(hci_stack); 5058 #endif 5059 hci_stack = NULL; 5060 } 5061 5062 #ifdef HAVE_SCO_TRANSPORT 5063 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5064 hci_stack->sco_transport = sco_transport; 5065 sco_transport->register_packet_handler(&packet_handler); 5066 } 5067 #endif 5068 5069 #ifdef ENABLE_CLASSIC 5070 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5071 // validate ranage and set 5072 if (encryption_key_size < 7) return; 5073 if (encryption_key_size > 16) return; 5074 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5075 } 5076 5077 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5078 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5079 hci_stack->gap_security_mode = security_mode; 5080 return ERROR_CODE_SUCCESS; 5081 } else { 5082 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5083 } 5084 } 5085 5086 gap_security_mode_t gap_get_security_mode(void){ 5087 return hci_stack->gap_security_mode; 5088 } 5089 5090 void gap_set_security_level(gap_security_level_t security_level){ 5091 hci_stack->gap_security_level = security_level; 5092 } 5093 5094 gap_security_level_t gap_get_security_level(void){ 5095 if (hci_stack->gap_secure_connections_only_mode){ 5096 return LEVEL_4; 5097 } 5098 return hci_stack->gap_security_level; 5099 } 5100 5101 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5102 hci_stack->gap_minimal_service_security_level = security_level; 5103 } 5104 5105 void gap_set_secure_connections_only_mode(bool enable){ 5106 hci_stack->gap_secure_connections_only_mode = enable; 5107 } 5108 5109 bool gap_get_secure_connections_only_mode(void){ 5110 return hci_stack->gap_secure_connections_only_mode; 5111 } 5112 #endif 5113 5114 #ifdef ENABLE_CLASSIC 5115 void gap_set_class_of_device(uint32_t class_of_device){ 5116 hci_stack->class_of_device = class_of_device; 5117 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5118 hci_run(); 5119 } 5120 5121 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5122 hci_stack->default_link_policy_settings = default_link_policy_settings; 5123 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5124 hci_run(); 5125 } 5126 5127 void gap_set_allow_role_switch(bool allow_role_switch){ 5128 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5129 } 5130 5131 uint8_t hci_get_allow_role_switch(void){ 5132 return hci_stack->allow_role_switch; 5133 } 5134 5135 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5136 hci_stack->link_supervision_timeout = link_supervision_timeout; 5137 } 5138 5139 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5140 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5141 } 5142 5143 uint16_t hci_automatic_flush_timeout(void){ 5144 return hci_stack->automatic_flush_timeout; 5145 } 5146 5147 void hci_disable_l2cap_timeout_check(void){ 5148 disable_l2cap_timeouts = 1; 5149 } 5150 #endif 5151 5152 #ifndef HAVE_HOST_CONTROLLER_API 5153 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5154 void hci_set_bd_addr(bd_addr_t addr){ 5155 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5156 hci_stack->custom_bd_addr_set = 1; 5157 } 5158 #endif 5159 5160 // State-Module-Driver overview 5161 // state module low-level 5162 // HCI_STATE_OFF off close 5163 // HCI_STATE_INITIALIZING, on open 5164 // HCI_STATE_WORKING, on open 5165 // HCI_STATE_HALTING, on open 5166 // HCI_STATE_SLEEPING, off/sleep close 5167 // HCI_STATE_FALLING_ASLEEP on open 5168 5169 static int hci_power_control_on(void){ 5170 5171 // power on 5172 int err = 0; 5173 if (hci_stack->control && hci_stack->control->on){ 5174 err = (*hci_stack->control->on)(); 5175 } 5176 if (err){ 5177 log_error( "POWER_ON failed"); 5178 hci_emit_hci_open_failed(); 5179 return err; 5180 } 5181 5182 // int chipset driver 5183 if (hci_stack->chipset && hci_stack->chipset->init){ 5184 hci_stack->chipset->init(hci_stack->config); 5185 } 5186 5187 // init transport 5188 if (hci_stack->hci_transport->init){ 5189 hci_stack->hci_transport->init(hci_stack->config); 5190 } 5191 5192 // open transport 5193 err = hci_stack->hci_transport->open(); 5194 if (err){ 5195 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5196 if (hci_stack->control && hci_stack->control->off){ 5197 (*hci_stack->control->off)(); 5198 } 5199 hci_emit_hci_open_failed(); 5200 return err; 5201 } 5202 return 0; 5203 } 5204 5205 static void hci_power_control_off(void){ 5206 5207 log_info("hci_power_control_off"); 5208 5209 // close low-level device 5210 hci_stack->hci_transport->close(); 5211 5212 log_info("hci_power_control_off - hci_transport closed"); 5213 5214 // power off 5215 if (hci_stack->control && hci_stack->control->off){ 5216 (*hci_stack->control->off)(); 5217 } 5218 5219 log_info("hci_power_control_off - control closed"); 5220 5221 hci_stack->state = HCI_STATE_OFF; 5222 } 5223 5224 static void hci_power_control_sleep(void){ 5225 5226 log_info("hci_power_control_sleep"); 5227 5228 #if 0 5229 // don't close serial port during sleep 5230 5231 // close low-level device 5232 hci_stack->hci_transport->close(hci_stack->config); 5233 #endif 5234 5235 // sleep mode 5236 if (hci_stack->control && hci_stack->control->sleep){ 5237 (*hci_stack->control->sleep)(); 5238 } 5239 5240 hci_stack->state = HCI_STATE_SLEEPING; 5241 } 5242 5243 static int hci_power_control_wake(void){ 5244 5245 log_info("hci_power_control_wake"); 5246 5247 // wake on 5248 if (hci_stack->control && hci_stack->control->wake){ 5249 (*hci_stack->control->wake)(); 5250 } 5251 5252 #if 0 5253 // open low-level device 5254 int err = hci_stack->hci_transport->open(hci_stack->config); 5255 if (err){ 5256 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5257 if (hci_stack->control && hci_stack->control->off){ 5258 (*hci_stack->control->off)(); 5259 } 5260 hci_emit_hci_open_failed(); 5261 return err; 5262 } 5263 #endif 5264 5265 return 0; 5266 } 5267 5268 static void hci_power_enter_initializing_state(void){ 5269 // set up state machine 5270 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5271 hci_stack->hci_packet_buffer_reserved = false; 5272 hci_stack->state = HCI_STATE_INITIALIZING; 5273 5274 #ifndef HAVE_HOST_CONTROLLER_API 5275 if (hci_stack->chipset_pre_init) { 5276 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5277 } else 5278 #endif 5279 { 5280 hci_stack->substate = HCI_INIT_SEND_RESET; 5281 } 5282 } 5283 5284 static void hci_power_enter_halting_state(void){ 5285 #ifdef ENABLE_BLE 5286 // drop entries scheduled for removal, mark others for re-adding 5287 btstack_linked_list_iterator_t it; 5288 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5289 while (btstack_linked_list_iterator_has_next(&it)){ 5290 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5291 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5292 btstack_linked_list_iterator_remove(&it); 5293 btstack_memory_whitelist_entry_free(entry); 5294 } else { 5295 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5296 } 5297 } 5298 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5299 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5300 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5301 while (btstack_linked_list_iterator_has_next(&it)){ 5302 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5303 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5304 btstack_linked_list_iterator_remove(&it); 5305 btstack_memory_periodic_advertiser_list_entry_free(entry); 5306 } else { 5307 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5308 continue; 5309 } 5310 } 5311 #endif 5312 #endif 5313 // see hci_run 5314 hci_stack->state = HCI_STATE_HALTING; 5315 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5316 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5317 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5318 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5319 btstack_run_loop_add_timer(&hci_stack->timeout); 5320 } 5321 5322 // returns error 5323 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5324 int err; 5325 switch (power_mode){ 5326 case HCI_POWER_ON: 5327 err = hci_power_control_on(); 5328 if (err != 0) { 5329 log_error("hci_power_control_on() error %d", err); 5330 return err; 5331 } 5332 hci_power_enter_initializing_state(); 5333 break; 5334 case HCI_POWER_OFF: 5335 // do nothing 5336 break; 5337 case HCI_POWER_SLEEP: 5338 // do nothing (with SLEEP == OFF) 5339 break; 5340 default: 5341 btstack_assert(false); 5342 break; 5343 } 5344 return ERROR_CODE_SUCCESS; 5345 } 5346 5347 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5348 switch (power_mode){ 5349 case HCI_POWER_ON: 5350 // do nothing 5351 break; 5352 case HCI_POWER_OFF: 5353 // no connections yet, just turn it off 5354 hci_power_control_off(); 5355 break; 5356 case HCI_POWER_SLEEP: 5357 // no connections yet, just turn it off 5358 hci_power_control_sleep(); 5359 break; 5360 default: 5361 btstack_assert(false); 5362 break; 5363 } 5364 return ERROR_CODE_SUCCESS; 5365 } 5366 5367 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5368 switch (power_mode){ 5369 case HCI_POWER_ON: 5370 // do nothing 5371 break; 5372 case HCI_POWER_OFF: 5373 hci_power_enter_halting_state(); 5374 break; 5375 case HCI_POWER_SLEEP: 5376 // see hci_run 5377 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5378 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5379 break; 5380 default: 5381 btstack_assert(false); 5382 break; 5383 } 5384 return ERROR_CODE_SUCCESS; 5385 } 5386 5387 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5388 switch (power_mode){ 5389 case HCI_POWER_ON: 5390 hci_power_enter_initializing_state(); 5391 break; 5392 case HCI_POWER_OFF: 5393 // do nothing 5394 break; 5395 case HCI_POWER_SLEEP: 5396 // see hci_run 5397 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5398 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5399 break; 5400 default: 5401 btstack_assert(false); 5402 break; 5403 } 5404 return ERROR_CODE_SUCCESS; 5405 } 5406 5407 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5408 switch (power_mode){ 5409 case HCI_POWER_ON: 5410 hci_power_enter_initializing_state(); 5411 break; 5412 case HCI_POWER_OFF: 5413 hci_power_enter_halting_state(); 5414 break; 5415 case HCI_POWER_SLEEP: 5416 // do nothing 5417 break; 5418 default: 5419 btstack_assert(false); 5420 break; 5421 } 5422 return ERROR_CODE_SUCCESS; 5423 } 5424 5425 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5426 int err; 5427 switch (power_mode){ 5428 case HCI_POWER_ON: 5429 err = hci_power_control_wake(); 5430 if (err) return err; 5431 hci_power_enter_initializing_state(); 5432 break; 5433 case HCI_POWER_OFF: 5434 hci_power_enter_halting_state(); 5435 break; 5436 case HCI_POWER_SLEEP: 5437 // do nothing 5438 break; 5439 default: 5440 btstack_assert(false); 5441 break; 5442 } 5443 return ERROR_CODE_SUCCESS; 5444 } 5445 5446 int hci_power_control(HCI_POWER_MODE power_mode){ 5447 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5448 btstack_run_loop_remove_timer(&hci_stack->timeout); 5449 int err = 0; 5450 switch (hci_stack->state){ 5451 case HCI_STATE_OFF: 5452 err = hci_power_control_state_off(power_mode); 5453 break; 5454 case HCI_STATE_INITIALIZING: 5455 err = hci_power_control_state_initializing(power_mode); 5456 break; 5457 case HCI_STATE_WORKING: 5458 err = hci_power_control_state_working(power_mode); 5459 break; 5460 case HCI_STATE_HALTING: 5461 err = hci_power_control_state_halting(power_mode); 5462 break; 5463 case HCI_STATE_FALLING_ASLEEP: 5464 err = hci_power_control_state_falling_asleep(power_mode); 5465 break; 5466 case HCI_STATE_SLEEPING: 5467 err = hci_power_control_state_sleeping(power_mode); 5468 break; 5469 default: 5470 btstack_assert(false); 5471 break; 5472 } 5473 if (err != 0){ 5474 return err; 5475 } 5476 5477 // create internal event 5478 hci_emit_state(); 5479 5480 // trigger next/first action 5481 hci_run(); 5482 5483 return 0; 5484 } 5485 5486 5487 static void hci_halting_run(void) { 5488 5489 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5490 5491 hci_connection_t *connection; 5492 #ifdef ENABLE_BLE 5493 #ifdef ENABLE_LE_PERIPHERAL 5494 bool stop_advertismenets; 5495 #endif 5496 #endif 5497 5498 switch (hci_stack->substate) { 5499 case HCI_HALTING_CLASSIC_STOP: 5500 #ifdef ENABLE_CLASSIC 5501 if (!hci_can_send_command_packet_now()) return; 5502 5503 if (hci_stack->connectable || hci_stack->discoverable){ 5504 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5505 hci_send_cmd(&hci_write_scan_enable, 0); 5506 return; 5507 } 5508 #endif 5509 /* fall through */ 5510 5511 case HCI_HALTING_LE_ADV_STOP: 5512 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5513 5514 #ifdef ENABLE_BLE 5515 #ifdef ENABLE_LE_PERIPHERAL 5516 if (!hci_can_send_command_packet_now()) return; 5517 5518 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5519 5520 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5521 if (hci_le_extended_advertising_supported()){ 5522 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5523 btstack_linked_list_iterator_t it; 5524 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5525 // stop all periodic advertisements and check if an extended set is active 5526 while (btstack_linked_list_iterator_has_next(&it)){ 5527 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5528 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5529 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5530 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5531 return; 5532 } 5533 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5534 stop_advertismenets = true; 5535 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5536 } 5537 } 5538 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5539 if (stop_advertismenets){ 5540 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5541 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5542 return; 5543 } 5544 } else 5545 #else /* ENABLE_LE_PERIPHERAL */ 5546 { 5547 if (stop_advertismenets) { 5548 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5549 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5550 return; 5551 } 5552 } 5553 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5554 #endif /* ENABLE_LE_PERIPHERAL */ 5555 #endif /* ENABLE_BLE */ 5556 5557 /* fall through */ 5558 5559 case HCI_HALTING_LE_SCAN_STOP: 5560 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5561 if (!hci_can_send_command_packet_now()) return; 5562 5563 #ifdef ENABLE_BLE 5564 #ifdef ENABLE_LE_CENTRAL 5565 if (hci_stack->le_scanning_active){ 5566 hci_le_scan_stop(); 5567 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5568 return; 5569 } 5570 #endif 5571 #endif 5572 5573 /* fall through */ 5574 5575 case HCI_HALTING_DISCONNECT_ALL: 5576 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5577 if (!hci_can_send_command_packet_now()) return; 5578 5579 // close all open connections 5580 connection = (hci_connection_t *) hci_stack->connections; 5581 if (connection) { 5582 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5583 5584 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5585 5586 // check state 5587 switch(connection->state) { 5588 case SENT_DISCONNECT: 5589 case RECEIVED_DISCONNECTION_COMPLETE: 5590 // wait until connection is gone 5591 return; 5592 default: 5593 break; 5594 } 5595 5596 // finally, send the disconnect command 5597 connection->state = SENT_DISCONNECT; 5598 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5599 return; 5600 } 5601 5602 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5603 // stop BIGs and BIG Syncs 5604 if (hci_stack->le_audio_bigs != NULL){ 5605 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5606 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5607 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5608 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5609 return; 5610 } 5611 if (hci_stack->le_audio_big_syncs != NULL){ 5612 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5613 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5614 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5615 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5616 return; 5617 } 5618 #endif 5619 5620 btstack_run_loop_remove_timer(&hci_stack->timeout); 5621 5622 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5623 log_info("HCI_STATE_HALTING: wait 50 ms"); 5624 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5625 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5626 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5627 btstack_run_loop_add_timer(&hci_stack->timeout); 5628 break; 5629 5630 case HCI_HALTING_W4_CLOSE_TIMER: 5631 // keep waiting 5632 break; 5633 5634 case HCI_HALTING_CLOSE: 5635 // close left over connections (that had not been properly closed before) 5636 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5637 hci_discard_connections(); 5638 5639 log_info("HCI_STATE_HALTING, calling off"); 5640 5641 // switch mode 5642 hci_power_control_off(); 5643 5644 log_info("HCI_STATE_HALTING, emitting state"); 5645 hci_emit_state(); 5646 log_info("HCI_STATE_HALTING, done"); 5647 break; 5648 5649 default: 5650 break; 5651 } 5652 }; 5653 5654 static void hci_falling_asleep_run(void){ 5655 hci_connection_t * connection; 5656 switch(hci_stack->substate) { 5657 case HCI_FALLING_ASLEEP_DISCONNECT: 5658 log_info("HCI_STATE_FALLING_ASLEEP"); 5659 // close all open connections 5660 connection = (hci_connection_t *) hci_stack->connections; 5661 if (connection){ 5662 5663 // send disconnect 5664 if (!hci_can_send_command_packet_now()) return; 5665 5666 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5667 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5668 5669 // send disconnected event right away - causes higher layer connections to get closed, too. 5670 hci_shutdown_connection(connection); 5671 return; 5672 } 5673 5674 if (hci_classic_supported()){ 5675 // disable page and inquiry scan 5676 if (!hci_can_send_command_packet_now()) return; 5677 5678 log_info("HCI_STATE_HALTING, disabling inq scans"); 5679 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5680 5681 // continue in next sub state 5682 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5683 break; 5684 } 5685 5686 /* fall through */ 5687 5688 case HCI_FALLING_ASLEEP_COMPLETE: 5689 log_info("HCI_STATE_HALTING, calling sleep"); 5690 // switch mode 5691 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5692 hci_emit_state(); 5693 break; 5694 5695 default: 5696 break; 5697 } 5698 } 5699 5700 #ifdef ENABLE_CLASSIC 5701 5702 static void hci_update_scan_enable(void){ 5703 // 2 = page scan, 1 = inq scan 5704 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5705 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5706 hci_run(); 5707 } 5708 5709 void gap_discoverable_control(uint8_t enable){ 5710 if (enable) enable = 1; // normalize argument 5711 5712 if (hci_stack->discoverable == enable){ 5713 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5714 return; 5715 } 5716 5717 hci_stack->discoverable = enable; 5718 hci_update_scan_enable(); 5719 } 5720 5721 void gap_connectable_control(uint8_t enable){ 5722 if (enable) enable = 1; // normalize argument 5723 5724 // don't emit event 5725 if (hci_stack->connectable == enable) return; 5726 5727 hci_stack->connectable = enable; 5728 hci_update_scan_enable(); 5729 } 5730 #endif 5731 5732 void gap_local_bd_addr(bd_addr_t address_buffer){ 5733 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5734 } 5735 5736 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5737 static void hci_host_num_completed_packets(void){ 5738 5739 // create packet manually as arrays are not supported and num_commands should not get reduced 5740 hci_reserve_packet_buffer(); 5741 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5742 5743 uint16_t size = 0; 5744 uint16_t num_handles = 0; 5745 packet[size++] = 0x35; 5746 packet[size++] = 0x0c; 5747 size++; // skip param len 5748 size++; // skip num handles 5749 5750 // add { handle, packets } entries 5751 btstack_linked_item_t * it; 5752 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5753 hci_connection_t * connection = (hci_connection_t *) it; 5754 if (connection->num_packets_completed){ 5755 little_endian_store_16(packet, size, connection->con_handle); 5756 size += 2; 5757 little_endian_store_16(packet, size, connection->num_packets_completed); 5758 size += 2; 5759 // 5760 num_handles++; 5761 connection->num_packets_completed = 0; 5762 } 5763 } 5764 5765 packet[2] = size - 3; 5766 packet[3] = num_handles; 5767 5768 hci_stack->host_completed_packets = 0; 5769 5770 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5771 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5772 5773 // release packet buffer for synchronous transport implementations 5774 if (hci_transport_synchronous()){ 5775 hci_release_packet_buffer(); 5776 hci_emit_transport_packet_sent(); 5777 } 5778 } 5779 #endif 5780 5781 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5782 UNUSED(ds); 5783 hci_stack->substate = HCI_HALTING_CLOSE; 5784 hci_halting_run(); 5785 } 5786 5787 static bool hci_run_acl_fragments(void){ 5788 if (hci_stack->acl_fragmentation_total_size > 0u) { 5789 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5790 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5791 if (connection) { 5792 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5793 hci_send_acl_packet_fragments(connection); 5794 return true; 5795 } 5796 } else { 5797 // connection gone -> discard further fragments 5798 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5799 hci_stack->acl_fragmentation_total_size = 0; 5800 hci_stack->acl_fragmentation_pos = 0; 5801 } 5802 } 5803 return false; 5804 } 5805 5806 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5807 static bool hci_run_iso_fragments(void){ 5808 if (hci_stack->iso_fragmentation_total_size > 0u) { 5809 // TODO: flow control 5810 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5811 hci_send_iso_packet_fragments(); 5812 return true; 5813 } 5814 } 5815 return false; 5816 } 5817 #endif 5818 5819 #ifdef ENABLE_CLASSIC 5820 5821 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5822 static bool hci_classic_operation_active(void) { 5823 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5824 return true; 5825 } 5826 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5827 return true; 5828 } 5829 btstack_linked_item_t * it; 5830 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5831 hci_connection_t *connection = (hci_connection_t *) it; 5832 switch (connection->state) { 5833 case SENT_CREATE_CONNECTION: 5834 case SENT_CANCEL_CONNECTION: 5835 case SENT_DISCONNECT: 5836 return true; 5837 default: 5838 break; 5839 } 5840 } 5841 return false; 5842 } 5843 #endif 5844 5845 static bool hci_run_general_gap_classic(void){ 5846 5847 // assert stack is working and classic is active 5848 if (hci_classic_supported() == false) return false; 5849 if (hci_stack->state != HCI_STATE_WORKING) return false; 5850 5851 // decline incoming connections 5852 if (hci_stack->decline_reason){ 5853 uint8_t reason = hci_stack->decline_reason; 5854 hci_stack->decline_reason = 0; 5855 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5856 return true; 5857 } 5858 5859 if (hci_stack->gap_tasks_classic != 0){ 5860 hci_run_gap_tasks_classic(); 5861 return true; 5862 } 5863 5864 // start/stop inquiry 5865 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5866 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5867 if (hci_classic_operation_active() == false) 5868 #endif 5869 { 5870 uint8_t duration = hci_stack->inquiry_state; 5871 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5872 if (hci_stack->inquiry_max_period_length != 0){ 5873 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); 5874 } else { 5875 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5876 } 5877 return true; 5878 } 5879 } 5880 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5881 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5882 hci_send_cmd(&hci_inquiry_cancel); 5883 return true; 5884 } 5885 5886 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5887 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5888 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5889 return true; 5890 } 5891 5892 // remote name request 5893 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5894 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5895 if (hci_classic_operation_active() == false) 5896 #endif 5897 { 5898 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5899 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5900 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5901 return true; 5902 } 5903 } 5904 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5905 // Local OOB data 5906 if (hci_stack->classic_read_local_oob_data){ 5907 hci_stack->classic_read_local_oob_data = false; 5908 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5909 hci_send_cmd(&hci_read_local_extended_oob_data); 5910 } else { 5911 hci_send_cmd(&hci_read_local_oob_data); 5912 } 5913 } 5914 #endif 5915 // pairing 5916 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5917 uint8_t state = hci_stack->gap_pairing_state; 5918 uint8_t pin_code[PIN_CODE_LEN]; 5919 switch (state){ 5920 case GAP_PAIRING_STATE_SEND_PIN: 5921 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5922 memset(pin_code, 0, 16); 5923 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5924 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5925 break; 5926 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5927 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5928 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5929 break; 5930 case GAP_PAIRING_STATE_SEND_PASSKEY: 5931 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5932 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5933 break; 5934 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5935 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5936 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5937 break; 5938 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5939 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5940 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5941 break; 5942 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5943 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5944 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5945 break; 5946 default: 5947 break; 5948 } 5949 return true; 5950 } 5951 return false; 5952 } 5953 #endif 5954 5955 #ifdef ENABLE_BLE 5956 5957 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5958 static uint8_t hci_le_num_phys(uint8_t phys){ 5959 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5960 btstack_assert(phys); 5961 return num_bits_set[phys]; 5962 } 5963 #endif 5964 5965 #ifdef ENABLE_LE_CENTRAL 5966 static void hci_le_scan_stop(void){ 5967 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5968 if (hci_le_extended_advertising_supported()) { 5969 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5970 } else 5971 #endif 5972 { 5973 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5974 } 5975 } 5976 5977 static void 5978 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 5979 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5980 if (hci_le_extended_advertising_supported()) { 5981 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 5982 uint16_t le_connection_scan_interval[3]; 5983 uint16_t le_connection_scan_window[3]; 5984 uint16_t le_connection_interval_min[3]; 5985 uint16_t le_connection_interval_max[3]; 5986 uint16_t le_connection_latency[3]; 5987 uint16_t le_supervision_timeout[3]; 5988 uint16_t le_minimum_ce_length[3]; 5989 uint16_t le_maximum_ce_length[3]; 5990 5991 uint8_t i; 5992 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 5993 for (i=0;i<num_phys;i++){ 5994 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 5995 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 5996 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 5997 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 5998 le_connection_latency[i] = hci_stack->le_connection_latency; 5999 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6000 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6001 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6002 } 6003 hci_send_cmd(&hci_le_extended_create_connection, 6004 initiator_filter_policy, 6005 hci_stack->le_connection_own_addr_type, // our addr type: 6006 address_type, // peer address type 6007 address, // peer bd addr 6008 hci_stack->le_connection_phys, // initiating PHY 6009 le_connection_scan_interval, // conn scan interval 6010 le_connection_scan_window, // conn scan windows 6011 le_connection_interval_min, // conn interval min 6012 le_connection_interval_max, // conn interval max 6013 le_connection_latency, // conn latency 6014 le_supervision_timeout, // conn latency 6015 le_minimum_ce_length, // min ce length 6016 le_maximum_ce_length // max ce length 6017 ); 6018 } else 6019 #endif 6020 { 6021 hci_send_cmd(&hci_le_create_connection, 6022 hci_stack->le_connection_scan_interval, // conn scan interval 6023 hci_stack->le_connection_scan_window, // conn scan windows 6024 initiator_filter_policy, // don't use whitelist 6025 address_type, // peer address type 6026 address, // peer bd addr 6027 hci_stack->le_connection_own_addr_type, // our addr type: 6028 hci_stack->le_connection_interval_min, // conn interval min 6029 hci_stack->le_connection_interval_max, // conn interval max 6030 hci_stack->le_connection_latency, // conn latency 6031 hci_stack->le_supervision_timeout, // conn latency 6032 hci_stack->le_minimum_ce_length, // min ce length 6033 hci_stack->le_maximum_ce_length // max ce length 6034 ); 6035 } 6036 } 6037 #endif 6038 6039 #ifdef ENABLE_LE_PERIPHERAL 6040 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6041 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6042 uint8_t operation = 0; 6043 if (pos == 0){ 6044 // first fragment or complete data 6045 operation |= 1; 6046 } 6047 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6048 // last fragment or complete data 6049 operation |= 2; 6050 } 6051 return operation; 6052 } 6053 #endif 6054 #endif 6055 6056 static bool hci_run_general_gap_le(void){ 6057 6058 btstack_linked_list_iterator_t lit; 6059 6060 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6061 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6062 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6063 hci_stack->le_resolvable_private_address_update_s = 0; 6064 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6065 return true; 6066 } 6067 #endif 6068 6069 // Phase 1: collect what to stop 6070 6071 #ifdef ENABLE_LE_CENTRAL 6072 bool scanning_stop = false; 6073 bool connecting_stop = false; 6074 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6075 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6076 bool periodic_sync_stop = false; 6077 #endif 6078 #endif 6079 #endif 6080 6081 #ifdef ENABLE_LE_PERIPHERAL 6082 bool advertising_stop = false; 6083 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6084 le_advertising_set_t * advertising_stop_set = NULL; 6085 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6086 bool periodic_advertising_stop = false; 6087 #endif 6088 #endif 6089 #endif 6090 6091 // check if own address changes 6092 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6093 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6094 6095 // check if whitelist needs modification 6096 bool whitelist_modification_pending = false; 6097 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6098 while (btstack_linked_list_iterator_has_next(&lit)){ 6099 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6100 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6101 whitelist_modification_pending = true; 6102 break; 6103 } 6104 } 6105 6106 // check if resolving list needs modification 6107 bool resolving_list_modification_pending = false; 6108 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6109 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6110 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6111 resolving_list_modification_pending = true; 6112 } 6113 #endif 6114 6115 #ifdef ENABLE_LE_CENTRAL 6116 6117 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6118 // check if periodic advertiser list needs modification 6119 bool periodic_list_modification_pending = false; 6120 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6121 while (btstack_linked_list_iterator_has_next(&lit)){ 6122 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6123 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6124 periodic_list_modification_pending = true; 6125 break; 6126 } 6127 } 6128 #endif 6129 6130 // scanning control 6131 if (hci_stack->le_scanning_active) { 6132 // stop if: 6133 // - parameter change required 6134 // - it's disabled 6135 // - whitelist change required but used for scanning 6136 // - resolving list modified 6137 // - own address changes 6138 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6139 if ((hci_stack->le_scanning_param_update) || 6140 !hci_stack->le_scanning_enabled || 6141 (scanning_uses_whitelist && whitelist_modification_pending) || 6142 resolving_list_modification_pending || 6143 random_address_change){ 6144 6145 scanning_stop = true; 6146 } 6147 } 6148 6149 // connecting control 6150 bool connecting_with_whitelist; 6151 switch (hci_stack->le_connecting_state){ 6152 case LE_CONNECTING_DIRECT: 6153 case LE_CONNECTING_WHITELIST: 6154 // stop connecting if: 6155 // - connecting uses white and whitelist modification pending 6156 // - if it got disabled 6157 // - resolving list modified 6158 // - own address changes 6159 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6160 if ((connecting_with_whitelist && whitelist_modification_pending) || 6161 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6162 resolving_list_modification_pending || 6163 random_address_change) { 6164 6165 connecting_stop = true; 6166 } 6167 break; 6168 default: 6169 break; 6170 } 6171 6172 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6173 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6174 // periodic sync control 6175 bool sync_with_advertiser_list; 6176 switch(hci_stack->le_periodic_sync_state){ 6177 case LE_CONNECTING_DIRECT: 6178 case LE_CONNECTING_WHITELIST: 6179 // stop sync if: 6180 // - sync with advertiser list and advertiser list modification pending 6181 // - if it got disabled 6182 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6183 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6184 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6185 periodic_sync_stop = true; 6186 } 6187 break; 6188 default: 6189 break; 6190 } 6191 #endif 6192 #endif 6193 6194 #endif /* ENABLE_LE_CENTRAL */ 6195 6196 #ifdef ENABLE_LE_PERIPHERAL 6197 // le advertisement control 6198 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6199 // stop if: 6200 // - parameter change required 6201 // - random address used in advertising and changes 6202 // - it's disabled 6203 // - whitelist change required but used for advertisement filter policy 6204 // - resolving list modified 6205 // - own address changes 6206 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6207 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6208 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6209 if (advertising_change || 6210 (advertising_uses_random_address && random_address_change) || 6211 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6212 (advertising_uses_whitelist && whitelist_modification_pending) || 6213 resolving_list_modification_pending || 6214 random_address_change) { 6215 6216 advertising_stop = true; 6217 } 6218 } 6219 6220 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6221 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6222 btstack_linked_list_iterator_t it; 6223 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6224 while (btstack_linked_list_iterator_has_next(&it)){ 6225 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6226 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6227 // stop if: 6228 // - parameter change required 6229 // - random address used in connectable advertising and changes 6230 // - it's disabled 6231 // - whitelist change required but used for advertisement filter policy 6232 // - resolving list modified 6233 // - own address changes 6234 // - advertisement set will be removed 6235 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6236 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6237 bool advertising_uses_random_address = 6238 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6239 advertising_connectable; 6240 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6241 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6242 bool advertising_set_random_address_change = 6243 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6244 bool advertising_set_will_be_removed = 6245 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6246 if (advertising_parameter_change || 6247 (advertising_uses_random_address && advertising_set_random_address_change) || 6248 (advertising_enabled == false) || 6249 (advertising_uses_whitelist && whitelist_modification_pending) || 6250 resolving_list_modification_pending || 6251 advertising_set_will_be_removed) { 6252 6253 advertising_stop = true; 6254 advertising_stop_set = advertising_set; 6255 break; 6256 } 6257 } 6258 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6259 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6260 // stop if: 6261 // - it's disabled 6262 // - parameter change required 6263 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6264 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6265 if ((periodic_enabled == false) || periodic_parameter_change){ 6266 periodic_advertising_stop = true; 6267 advertising_stop_set = advertising_set; 6268 } 6269 } 6270 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6271 } 6272 } 6273 #endif 6274 6275 #endif 6276 6277 6278 // Phase 2: stop everything that should be off during modifications 6279 6280 6281 // 2.1 Outgoing connection 6282 #ifdef ENABLE_LE_CENTRAL 6283 if (connecting_stop){ 6284 hci_send_cmd(&hci_le_create_connection_cancel); 6285 return true; 6286 } 6287 #endif 6288 6289 // 2.2 Scanning 6290 #ifdef ENABLE_LE_CENTRAL 6291 if (scanning_stop){ 6292 hci_stack->le_scanning_active = false; 6293 hci_le_scan_stop(); 6294 return true; 6295 } 6296 6297 // 2.3 Periodic Sync 6298 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6299 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6300 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6301 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6302 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6303 return true; 6304 } 6305 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6306 if (periodic_sync_stop){ 6307 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6308 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6309 return true; 6310 } 6311 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6312 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6313 #endif /* ENABLE_LE_CENTRAL */ 6314 6315 // 2.4 Advertising: legacy, extended, periodic 6316 #ifdef ENABLE_LE_PERIPHERAL 6317 if (advertising_stop){ 6318 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6319 if (hci_le_extended_advertising_supported()) { 6320 uint8_t advertising_stop_handle; 6321 if (advertising_stop_set != NULL){ 6322 advertising_stop_handle = advertising_stop_set->advertising_handle; 6323 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6324 } else { 6325 advertising_stop_handle = 0; 6326 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6327 } 6328 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6329 const uint16_t durations[] = { 0 }; 6330 const uint16_t max_events[] = { 0 }; 6331 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6332 } else 6333 #endif 6334 { 6335 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6336 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6337 } 6338 return true; 6339 } 6340 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6341 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6342 if (periodic_advertising_stop){ 6343 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6344 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6345 return true; 6346 } 6347 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6348 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6349 #endif /* ENABLE_LE_PERIPHERAL */ 6350 6351 6352 // Phase 3: modify 6353 6354 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6355 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6356 // GAP Privacy, notify clients upon upcoming random address change 6357 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6358 gap_privacy_clients_notify(hci_stack->le_random_address); 6359 } 6360 6361 // - wait until privacy update completed 6362 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6363 return false; 6364 } 6365 6366 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6367 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6368 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6369 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6370 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6371 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6372 #endif 6373 return true; 6374 } 6375 6376 #ifdef ENABLE_LE_CENTRAL 6377 if (hci_stack->le_scanning_param_update){ 6378 hci_stack->le_scanning_param_update = false; 6379 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6380 if (hci_le_extended_advertising_supported()){ 6381 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6382 uint8_t scan_types[2]; 6383 uint16_t scan_intervals[2]; 6384 uint16_t scan_windows[2]; 6385 6386 uint8_t i; 6387 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6388 for (i=0;i<num_phys;i++){ 6389 scan_types[i] = hci_stack->le_scan_type; 6390 scan_intervals[i] = hci_stack->le_scan_interval; 6391 scan_windows[i] = hci_stack->le_scan_window; 6392 } 6393 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6394 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6395 } else 6396 #endif 6397 { 6398 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6399 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6400 } 6401 return true; 6402 } 6403 #endif 6404 6405 #ifdef ENABLE_LE_PERIPHERAL 6406 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6407 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6408 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6409 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6410 if (hci_le_extended_advertising_supported()){ 6411 // map advertisment type to advertising event properties 6412 uint16_t adv_event_properties = 0; 6413 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6414 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6415 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6416 } 6417 hci_stack->le_advertising_set_in_current_command = 0; 6418 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6419 0, 6420 adv_event_properties, 6421 hci_stack->le_advertisements_interval_min, 6422 hci_stack->le_advertisements_interval_max, 6423 hci_stack->le_advertisements_channel_map, 6424 hci_stack->le_advertisements_own_addr_type, 6425 hci_stack->le_advertisements_direct_address_type, 6426 hci_stack->le_advertisements_direct_address, 6427 hci_stack->le_advertisements_filter_policy, 6428 0x7f, // tx power: no preference 6429 0x01, // primary adv phy: LE 1M 6430 0, // secondary adv max skip 6431 0x01, // secondary adv phy 6432 0, // adv sid 6433 0 // scan request notification 6434 ); 6435 } else 6436 #endif 6437 { 6438 hci_send_cmd(&hci_le_set_advertising_parameters, 6439 hci_stack->le_advertisements_interval_min, 6440 hci_stack->le_advertisements_interval_max, 6441 hci_stack->le_advertisements_type, 6442 hci_stack->le_advertisements_own_addr_type, 6443 hci_stack->le_advertisements_direct_address_type, 6444 hci_stack->le_advertisements_direct_address, 6445 hci_stack->le_advertisements_channel_map, 6446 hci_stack->le_advertisements_filter_policy); 6447 } 6448 return true; 6449 } 6450 6451 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6452 // assumption: only set if extended advertising is supported 6453 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6454 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6455 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6456 return true; 6457 } 6458 #endif 6459 6460 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6461 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6462 uint8_t adv_data_clean[31]; 6463 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6464 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6465 hci_stack->le_advertisements_data_len); 6466 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6467 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6468 if (hci_le_extended_advertising_supported()){ 6469 hci_stack->le_advertising_set_in_current_command = 0; 6470 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6471 } else 6472 #endif 6473 { 6474 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6475 } 6476 return true; 6477 } 6478 6479 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6480 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6481 uint8_t scan_data_clean[31]; 6482 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6483 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6484 hci_stack->le_scan_response_data_len); 6485 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6486 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6487 if (hci_le_extended_advertising_supported()){ 6488 hci_stack->le_advertising_set_in_current_command = 0; 6489 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6490 } else 6491 #endif 6492 { 6493 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6494 } 6495 return true; 6496 } 6497 6498 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6499 if (hci_le_extended_advertising_supported()) { 6500 btstack_linked_list_iterator_t it; 6501 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6502 while (btstack_linked_list_iterator_has_next(&it)){ 6503 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6504 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6505 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6506 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6507 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6508 return true; 6509 } 6510 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6511 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6512 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6513 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6514 advertising_set->advertising_handle, 6515 advertising_set->extended_params.advertising_event_properties, 6516 advertising_set->extended_params.primary_advertising_interval_min, 6517 advertising_set->extended_params.primary_advertising_interval_max, 6518 advertising_set->extended_params.primary_advertising_channel_map, 6519 advertising_set->extended_params.own_address_type, 6520 advertising_set->extended_params.peer_address_type, 6521 advertising_set->extended_params.peer_address, 6522 advertising_set->extended_params.advertising_filter_policy, 6523 advertising_set->extended_params.advertising_tx_power, 6524 advertising_set->extended_params.primary_advertising_phy, 6525 advertising_set->extended_params.secondary_advertising_max_skip, 6526 advertising_set->extended_params.secondary_advertising_phy, 6527 advertising_set->extended_params.advertising_sid, 6528 advertising_set->extended_params.scan_request_notification_enable 6529 ); 6530 return true; 6531 } 6532 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6533 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6534 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6535 return true; 6536 } 6537 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6538 uint16_t pos = advertising_set->adv_data_pos; 6539 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6540 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6541 if ((operation & 0x02) != 0){ 6542 // last fragment or complete data 6543 operation |= 2; 6544 advertising_set->adv_data_pos = 0; 6545 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6546 } else { 6547 advertising_set->adv_data_pos += data_to_upload; 6548 } 6549 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6550 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6551 return true; 6552 } 6553 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6554 uint16_t pos = advertising_set->scan_data_pos; 6555 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6556 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6557 if ((operation & 0x02) != 0){ 6558 advertising_set->scan_data_pos = 0; 6559 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6560 } else { 6561 advertising_set->scan_data_pos += data_to_upload; 6562 } 6563 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6564 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6565 return true; 6566 } 6567 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6568 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6569 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6570 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6571 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6572 advertising_set->advertising_handle, 6573 advertising_set->periodic_params.periodic_advertising_interval_min, 6574 advertising_set->periodic_params.periodic_advertising_interval_max, 6575 advertising_set->periodic_params.periodic_advertising_properties); 6576 return true; 6577 } 6578 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6579 uint16_t pos = advertising_set->periodic_data_pos; 6580 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6581 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6582 if ((operation & 0x02) != 0){ 6583 // last fragment or complete data 6584 operation |= 2; 6585 advertising_set->periodic_data_pos = 0; 6586 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6587 } else { 6588 advertising_set->periodic_data_pos += data_to_upload; 6589 } 6590 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6591 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6592 return true; 6593 } 6594 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6595 } 6596 } 6597 #endif 6598 6599 #endif 6600 6601 #ifdef ENABLE_LE_CENTRAL 6602 // if connect with whitelist was active and is not cancelled yet, wait until next time 6603 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6604 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6605 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6606 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6607 #endif 6608 #endif 6609 6610 // LE Whitelist Management 6611 if (whitelist_modification_pending){ 6612 // add/remove entries 6613 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6614 while (btstack_linked_list_iterator_has_next(&lit)){ 6615 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6616 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6617 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6618 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6619 bd_addr_type_t address_type = entry->address_type; 6620 bd_addr_t address; 6621 memcpy(address, entry->address, 6); 6622 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6623 // remove from whitelist if not scheduled for re-addition 6624 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6625 btstack_memory_whitelist_entry_free(entry); 6626 } 6627 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6628 return true; 6629 } 6630 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6631 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6632 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6633 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6634 return true; 6635 } 6636 } 6637 } 6638 6639 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6640 // LE Resolving List Management 6641 if (resolving_list_modification_pending) { 6642 uint16_t i; 6643 uint8_t null_16[16]; 6644 uint8_t local_irk_flipped[16]; 6645 const uint8_t *local_irk; 6646 switch (hci_stack->le_resolving_list_state) { 6647 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6648 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6649 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6650 return true; 6651 case LE_RESOLVING_LIST_READ_SIZE: 6652 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6653 hci_send_cmd(&hci_le_read_resolving_list_size); 6654 return true; 6655 case LE_RESOLVING_LIST_SEND_CLEAR: 6656 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6657 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6658 sizeof(hci_stack->le_resolving_list_add_entries)); 6659 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6660 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6661 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6662 sizeof(hci_stack->le_resolving_list_remove_entries)); 6663 hci_send_cmd(&hci_le_clear_resolving_list); 6664 return true; 6665 case LE_RESOLVING_LIST_SET_IRK: 6666 // set IRK used by RPA for undirected advertising 6667 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6668 local_irk = gap_get_persistent_irk(); 6669 reverse_128(local_irk, local_irk_flipped); 6670 memset(null_16, 0, sizeof(null_16)); 6671 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6672 null_16, local_irk_flipped); 6673 return true; 6674 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6675 // first remove old entries 6676 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6677 uint8_t offset = i >> 3; 6678 uint8_t mask = 1 << (i & 7); 6679 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6680 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6681 bd_addr_t peer_identity_addreses; 6682 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6683 sm_key_t peer_irk; 6684 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6685 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6686 6687 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6688 // trigger whitelist entry 'update' (work around for controller bug) 6689 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6690 while (btstack_linked_list_iterator_has_next(&lit)) { 6691 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6692 if (entry->address_type != peer_identity_addr_type) continue; 6693 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6694 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6695 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6696 } 6697 #endif 6698 6699 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6700 peer_identity_addreses); 6701 return true; 6702 } 6703 6704 // then add new entries 6705 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6706 uint8_t offset = i >> 3; 6707 uint8_t mask = 1 << (i & 7); 6708 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6709 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6710 bd_addr_t peer_identity_addreses; 6711 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6712 sm_key_t peer_irk; 6713 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6714 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6715 if (btstack_is_null(peer_irk, 16)) continue; 6716 local_irk = gap_get_persistent_irk(); 6717 // command uses format specifier 'P' that stores 16-byte value without flip 6718 uint8_t peer_irk_flipped[16]; 6719 reverse_128(local_irk, local_irk_flipped); 6720 reverse_128(peer_irk, peer_irk_flipped); 6721 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6722 peer_irk_flipped, local_irk_flipped); 6723 return true; 6724 } 6725 6726 // finally, set privacy mode 6727 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6728 uint8_t offset = i >> 3; 6729 uint8_t mask = 1 << (i & 7); 6730 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6731 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6732 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6733 // Network Privacy Mode is default 6734 continue; 6735 } 6736 bd_addr_t peer_identity_address; 6737 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6738 sm_key_t peer_irk; 6739 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6740 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6741 if (btstack_is_null(peer_irk, 16)) continue; 6742 // command uses format specifier 'P' that stores 16-byte value without flip 6743 uint8_t peer_irk_flipped[16]; 6744 reverse_128(peer_irk, peer_irk_flipped); 6745 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6746 return true; 6747 } 6748 break; 6749 6750 default: 6751 break; 6752 } 6753 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6754 } 6755 #endif 6756 6757 #ifdef ENABLE_LE_CENTRAL 6758 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6759 // LE Whitelist Management 6760 if (periodic_list_modification_pending){ 6761 // add/remove entries 6762 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6763 while (btstack_linked_list_iterator_has_next(&lit)){ 6764 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6765 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6766 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6767 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6768 return true; 6769 } 6770 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6771 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6772 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6773 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6774 return true; 6775 } 6776 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6777 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6778 btstack_memory_periodic_advertiser_list_entry_free(entry); 6779 } 6780 } 6781 } 6782 #endif 6783 #endif 6784 6785 #ifdef ENABLE_LE_CENTRAL 6786 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6787 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6788 if (hci_stack->le_past_set_default_params){ 6789 hci_stack->le_past_set_default_params = false; 6790 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6791 hci_stack->le_past_mode, 6792 hci_stack->le_past_skip, 6793 hci_stack->le_past_sync_timeout, 6794 hci_stack->le_past_cte_type); 6795 return true; 6796 } 6797 #endif 6798 #endif 6799 #endif 6800 6801 // post-pone all actions until stack is fully working 6802 if (hci_stack->state != HCI_STATE_WORKING) return false; 6803 6804 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6805 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6806 6807 // Phase 4: restore state 6808 6809 #ifdef ENABLE_LE_CENTRAL 6810 // re-start scanning 6811 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6812 hci_stack->le_scanning_active = true; 6813 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6814 if (hci_le_extended_advertising_supported()){ 6815 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6816 } else 6817 #endif 6818 { 6819 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6820 } 6821 return true; 6822 } 6823 #endif 6824 6825 #ifdef ENABLE_LE_CENTRAL 6826 // re-start connecting 6827 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6828 bd_addr_t null_addr; 6829 memset(null_addr, 0, 6); 6830 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6831 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6832 hci_send_le_create_connection(1, 0, null_addr); 6833 return true; 6834 } 6835 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6836 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6837 switch(hci_stack->le_periodic_sync_request){ 6838 case LE_CONNECTING_DIRECT: 6839 case LE_CONNECTING_WHITELIST: 6840 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6841 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6842 hci_stack->le_periodic_sync_options, 6843 hci_stack->le_periodic_sync_advertising_sid, 6844 hci_stack->le_periodic_sync_advertiser_address_type, 6845 hci_stack->le_periodic_sync_advertiser_address, 6846 hci_stack->le_periodic_sync_skip, 6847 hci_stack->le_periodic_sync_timeout, 6848 hci_stack->le_periodic_sync_cte_type); 6849 return true; 6850 default: 6851 break; 6852 } 6853 } 6854 #endif 6855 #endif 6856 6857 #ifdef ENABLE_LE_PERIPHERAL 6858 // re-start advertising 6859 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6860 // check if advertisements should be enabled given 6861 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6862 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6863 6864 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6865 if (hci_le_extended_advertising_supported()){ 6866 const uint8_t advertising_handles[] = { 0 }; 6867 const uint16_t durations[] = { 0 }; 6868 const uint16_t max_events[] = { 0 }; 6869 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6870 } else 6871 #endif 6872 { 6873 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6874 } 6875 return true; 6876 } 6877 6878 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6879 if (hci_le_extended_advertising_supported()) { 6880 btstack_linked_list_iterator_t it; 6881 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6882 while (btstack_linked_list_iterator_has_next(&it)) { 6883 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6884 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6885 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6886 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6887 const uint16_t durations[] = { advertising_set->enable_timeout }; 6888 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6889 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6890 return true; 6891 } 6892 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6893 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6894 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6895 uint8_t enable = 1; 6896 if (advertising_set->periodic_include_adi){ 6897 enable |= 2; 6898 } 6899 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6900 return true; 6901 } 6902 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6903 } 6904 } 6905 #endif 6906 #endif 6907 6908 return false; 6909 } 6910 6911 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6912 static bool hci_run_iso_tasks(void){ 6913 btstack_linked_list_iterator_t it; 6914 6915 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6916 return false; 6917 } 6918 6919 // BIG 6920 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6921 while (btstack_linked_list_iterator_has_next(&it)){ 6922 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6923 switch (big->state){ 6924 case LE_AUDIO_BIG_STATE_CREATE: 6925 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6926 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6927 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6928 hci_send_cmd(&hci_le_create_big, 6929 big->params->big_handle, 6930 big->params->advertising_handle, 6931 big->params->num_bis, 6932 big->params->sdu_interval_us, 6933 big->params->max_sdu, 6934 big->params->max_transport_latency_ms, 6935 big->params->rtn, 6936 big->params->phy, 6937 big->params->packing, 6938 big->params->framing, 6939 big->params->encryption, 6940 big->params->broadcast_code); 6941 return true; 6942 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6943 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6944 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); 6945 return true; 6946 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6947 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6948 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6949 return true; 6950 case LE_AUDIO_BIG_STATE_TERMINATE: 6951 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6952 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6953 return true; 6954 default: 6955 break; 6956 } 6957 } 6958 6959 // BIG Sync 6960 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6961 while (btstack_linked_list_iterator_has_next(&it)){ 6962 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6963 switch (big_sync->state){ 6964 case LE_AUDIO_BIG_STATE_CREATE: 6965 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 6966 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6967 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6968 hci_send_cmd(&hci_le_big_create_sync, 6969 big_sync->params->big_handle, 6970 big_sync->params->sync_handle, 6971 big_sync->params->encryption, 6972 big_sync->params->broadcast_code, 6973 big_sync->params->mse, 6974 big_sync->params->big_sync_timeout_10ms, 6975 big_sync->params->num_bis, 6976 big_sync->params->bis_indices); 6977 return true; 6978 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6979 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6980 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); 6981 return true; 6982 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6983 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6984 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6985 return true; 6986 case LE_AUDIO_BIG_STATE_TERMINATE: 6987 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6988 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6989 return true; 6990 default: 6991 break; 6992 } 6993 } 6994 6995 // CIG 6996 bool cig_active; 6997 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 6998 while (btstack_linked_list_iterator_has_next(&it)) { 6999 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7000 uint8_t i; 7001 // Set CIG Parameters 7002 uint8_t cis_id[MAX_NR_CIS]; 7003 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7004 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7005 uint8_t phy_c_to_p[MAX_NR_CIS]; 7006 uint8_t phy_p_to_c[MAX_NR_CIS]; 7007 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7008 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7009 switch (cig->state) { 7010 case LE_AUDIO_CIG_STATE_CREATE: 7011 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7012 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7013 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7014 le_audio_cig_params_t * params = cig->params; 7015 for (i = 0; i < params->num_cis; i++) { 7016 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7017 cis_id[i] = cis_params->cis_id; 7018 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7019 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7020 phy_c_to_p[i] = cis_params->phy_c_to_p; 7021 phy_p_to_c[i] = cis_params->phy_p_to_c; 7022 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7023 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7024 } 7025 hci_send_cmd(&hci_le_set_cig_parameters, 7026 cig->cig_id, 7027 params->sdu_interval_c_to_p, 7028 params->sdu_interval_p_to_c, 7029 params->worst_case_sca, 7030 params->packing, 7031 params->framing, 7032 params->max_transport_latency_c_to_p, 7033 params->max_transport_latency_p_to_c, 7034 params->num_cis, 7035 cis_id, 7036 max_sdu_c_to_p, 7037 max_sdu_p_to_c, 7038 phy_c_to_p, 7039 phy_p_to_c, 7040 rtn_c_to_p, 7041 rtn_p_to_c 7042 ); 7043 return true; 7044 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7045 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7046 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7047 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7048 for (i=0;i<cig->num_cis;i++){ 7049 cig->cis_setup_active[i] = true; 7050 } 7051 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7052 return true; 7053 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7054 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7055 // find next path to setup 7056 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7057 if (cig->cis_established[cis_index] == false) { 7058 continue; 7059 } 7060 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7061 bool setup = true; 7062 if (cis_direction == 0){ 7063 // 0 - input - host to controller 7064 // we are central => central to peripheral 7065 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7066 } else { 7067 // 1 - output - controller to host 7068 // we are central => peripheral to central 7069 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7070 } 7071 if (setup){ 7072 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7073 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7074 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7075 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); 7076 return true; 7077 } 7078 cig->state_vars.next_cis++; 7079 } 7080 // emit done 7081 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7082 break; 7083 case LE_AUDIO_CIG_STATE_REMOVE: 7084 // check if CIG Active 7085 cig_active = false; 7086 for (i = 0; i < cig->num_cis; i++) { 7087 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7088 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7089 if (stream != NULL){ 7090 cig_active = true; 7091 break; 7092 } 7093 } 7094 } 7095 if (cig_active == false){ 7096 btstack_linked_list_iterator_remove(&it); 7097 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7098 return true; 7099 } 7100 default: 7101 break; 7102 } 7103 } 7104 7105 // CIS Accept/Reject/Setup ISO Path/Close 7106 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7107 while (btstack_linked_list_iterator_has_next(&it)) { 7108 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7109 hci_con_handle_t con_handle; 7110 switch (iso_stream->state){ 7111 case HCI_ISO_STREAM_W2_ACCEPT: 7112 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7113 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7114 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7115 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7116 return true; 7117 case HCI_ISO_STREAM_W2_REJECT: 7118 con_handle = iso_stream->cis_handle; 7119 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7120 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7121 hci_iso_stream_finalize(iso_stream); 7122 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7123 return true; 7124 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7125 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7126 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7127 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7128 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); 7129 break; 7130 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7131 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7132 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7133 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7134 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); 7135 break; 7136 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7137 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7138 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle); 7139 break; 7140 default: 7141 break; 7142 } 7143 } 7144 7145 return false; 7146 } 7147 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7148 #endif 7149 7150 static bool hci_run_general_pending_commands(void){ 7151 btstack_linked_item_t * it; 7152 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7153 hci_connection_t * connection = (hci_connection_t *) it; 7154 7155 switch(connection->state){ 7156 case SEND_CREATE_CONNECTION: 7157 switch(connection->address_type){ 7158 #ifdef ENABLE_CLASSIC 7159 case BD_ADDR_TYPE_ACL: 7160 log_info("sending hci_create_connection"); 7161 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7162 break; 7163 #endif 7164 default: 7165 #ifdef ENABLE_BLE 7166 #ifdef ENABLE_LE_CENTRAL 7167 log_info("sending hci_le_create_connection"); 7168 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7169 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7170 hci_send_le_create_connection(0, connection->address_type, connection->address); 7171 connection->state = SENT_CREATE_CONNECTION; 7172 #endif 7173 #endif 7174 break; 7175 } 7176 return true; 7177 7178 #ifdef ENABLE_CLASSIC 7179 case RECEIVED_CONNECTION_REQUEST: 7180 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7181 log_info("sending hci_accept_connection_request"); 7182 connection->state = ACCEPTED_CONNECTION_REQUEST; 7183 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7184 return true; 7185 } 7186 break; 7187 #endif 7188 case SEND_DISCONNECT: 7189 connection->state = SENT_DISCONNECT; 7190 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7191 return true; 7192 7193 default: 7194 break; 7195 } 7196 7197 // no further commands if connection is about to get shut down 7198 if (connection->state == SENT_DISCONNECT) continue; 7199 7200 #ifdef ENABLE_CLASSIC 7201 7202 // Handling link key request requires remote supported features 7203 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7204 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7205 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7206 7207 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7208 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7209 if (have_link_key && security_level_sufficient){ 7210 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7211 } else { 7212 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7213 } 7214 return true; 7215 } 7216 7217 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7218 log_info("denying to pin request"); 7219 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7220 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7221 return true; 7222 } 7223 7224 // security assessment requires remote features 7225 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7226 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7227 hci_ssp_assess_security_on_io_cap_request(connection); 7228 // 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 7229 } 7230 7231 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7232 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7233 // set authentication requirements: 7234 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7235 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7236 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7237 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7238 authreq |= 1; 7239 } 7240 bool bonding = hci_stack->bondable; 7241 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7242 // if we have received IO Cap Response, we're in responder role 7243 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7244 if (bonding && !remote_bonding){ 7245 log_info("Remote not bonding, dropping local flag"); 7246 bonding = false; 7247 } 7248 } 7249 if (bonding){ 7250 if (connection->bonding_flags & BONDING_DEDICATED){ 7251 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7252 } else { 7253 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7254 } 7255 } 7256 uint8_t have_oob_data = 0; 7257 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7258 if (connection->classic_oob_c_192 != NULL){ 7259 have_oob_data |= 1; 7260 } 7261 if (connection->classic_oob_c_256 != NULL){ 7262 have_oob_data |= 2; 7263 } 7264 #endif 7265 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7266 return true; 7267 } 7268 7269 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7270 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7271 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7272 return true; 7273 } 7274 7275 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7276 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7277 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7278 const uint8_t zero[16] = { 0 }; 7279 const uint8_t * r_192 = zero; 7280 const uint8_t * c_192 = zero; 7281 const uint8_t * r_256 = zero; 7282 const uint8_t * c_256 = zero; 7283 // verify P-256 OOB 7284 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7285 c_256 = connection->classic_oob_c_256; 7286 if (connection->classic_oob_r_256 != NULL) { 7287 r_256 = connection->classic_oob_r_256; 7288 } 7289 } 7290 // verify P-192 OOB 7291 if ((connection->classic_oob_c_192 != NULL)) { 7292 c_192 = connection->classic_oob_c_192; 7293 if (connection->classic_oob_r_192 != NULL) { 7294 r_192 = connection->classic_oob_r_192; 7295 } 7296 } 7297 7298 // assess security 7299 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7300 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7301 if (need_level_4 && !can_reach_level_4){ 7302 log_info("Level 4 required, but not possible -> abort"); 7303 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7304 // send oob negative reply 7305 c_256 = NULL; 7306 c_192 = NULL; 7307 } 7308 7309 // Reply 7310 if (c_256 != zero) { 7311 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7312 } else if (c_192 != zero){ 7313 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7314 } else { 7315 hci_stack->classic_oob_con_handle = connection->con_handle; 7316 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7317 } 7318 return true; 7319 } 7320 #endif 7321 7322 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7323 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7324 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7325 return true; 7326 } 7327 7328 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7329 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7330 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7331 return true; 7332 } 7333 7334 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7335 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7336 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7337 return true; 7338 } 7339 7340 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7341 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7342 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7343 connection->state = SENT_DISCONNECT; 7344 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7345 return true; 7346 } 7347 7348 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7349 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7350 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7351 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7352 return true; 7353 } 7354 7355 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7356 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7357 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7358 return true; 7359 } 7360 7361 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7362 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7363 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7364 return true; 7365 } 7366 7367 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7368 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7369 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7370 return true; 7371 } 7372 7373 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7374 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7375 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7376 return true; 7377 } 7378 7379 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7380 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7381 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7382 return true; 7383 } 7384 #endif 7385 7386 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7387 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7388 #ifdef ENABLE_CLASSIC 7389 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7390 #endif 7391 if (connection->state != SENT_DISCONNECT){ 7392 connection->state = SENT_DISCONNECT; 7393 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7394 return true; 7395 } 7396 } 7397 7398 #ifdef ENABLE_CLASSIC 7399 uint16_t sniff_min_interval; 7400 switch (connection->sniff_min_interval){ 7401 case 0: 7402 break; 7403 case 0xffff: 7404 connection->sniff_min_interval = 0; 7405 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7406 return true; 7407 default: 7408 sniff_min_interval = connection->sniff_min_interval; 7409 connection->sniff_min_interval = 0; 7410 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7411 return true; 7412 } 7413 7414 if (connection->sniff_subrating_max_latency != 0xffff){ 7415 uint16_t max_latency = connection->sniff_subrating_max_latency; 7416 connection->sniff_subrating_max_latency = 0; 7417 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7418 return true; 7419 } 7420 7421 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7422 uint8_t service_type = (uint8_t) connection->qos_service_type; 7423 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7424 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); 7425 return true; 7426 } 7427 7428 if (connection->request_role != HCI_ROLE_INVALID){ 7429 hci_role_t role = connection->request_role; 7430 connection->request_role = HCI_ROLE_INVALID; 7431 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7432 return true; 7433 } 7434 #endif 7435 7436 if (connection->gap_connection_tasks != 0){ 7437 #ifdef ENABLE_CLASSIC 7438 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7439 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7440 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7441 return true; 7442 } 7443 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7444 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7445 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7446 return true; 7447 } 7448 #endif 7449 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7450 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7451 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7452 return true; 7453 } 7454 #ifdef ENABLE_BLE 7455 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7456 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7457 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7458 return true; 7459 } 7460 #endif 7461 } 7462 7463 #ifdef ENABLE_BLE 7464 switch (connection->le_con_parameter_update_state){ 7465 // response to L2CAP CON PARAMETER UPDATE REQUEST 7466 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7467 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7468 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7469 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7470 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7471 return true; 7472 case CON_PARAMETER_UPDATE_REPLY: 7473 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7474 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7475 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7476 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7477 return true; 7478 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7479 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7480 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7481 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7482 return true; 7483 default: 7484 break; 7485 } 7486 if (connection->le_phy_update_all_phys != 0xffu){ 7487 uint8_t all_phys = connection->le_phy_update_all_phys; 7488 connection->le_phy_update_all_phys = 0xff; 7489 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); 7490 return true; 7491 } 7492 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7493 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7494 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7495 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7496 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7497 return true; 7498 } 7499 if (connection->le_past_advertising_handle != 0xff){ 7500 uint8_t advertising_handle = connection->le_past_advertising_handle; 7501 connection->le_past_advertising_handle = 0xff; 7502 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7503 return true; 7504 } 7505 #endif 7506 #endif 7507 } 7508 return false; 7509 } 7510 7511 static void hci_run(void){ 7512 7513 // stack state sub statemachines 7514 switch (hci_stack->state) { 7515 case HCI_STATE_INITIALIZING: 7516 hci_initializing_run(); 7517 break; 7518 case HCI_STATE_HALTING: 7519 hci_halting_run(); 7520 break; 7521 case HCI_STATE_FALLING_ASLEEP: 7522 hci_falling_asleep_run(); 7523 break; 7524 default: 7525 break; 7526 } 7527 7528 // allow to run after initialization to working transition 7529 if (hci_stack->state != HCI_STATE_WORKING){ 7530 return; 7531 } 7532 7533 bool done; 7534 7535 // send continuation fragments first, as they block the prepared packet buffer 7536 done = hci_run_acl_fragments(); 7537 if (done) return; 7538 7539 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7540 done = hci_run_iso_fragments(); 7541 if (done) return; 7542 #endif 7543 7544 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7545 // send host num completed packets next as they don't require num_cmd_packets > 0 7546 if (!hci_can_send_comand_packet_transport()) return; 7547 if (hci_stack->host_completed_packets){ 7548 hci_host_num_completed_packets(); 7549 return; 7550 } 7551 #endif 7552 7553 if (!hci_can_send_command_packet_now()) return; 7554 7555 // global/non-connection oriented commands 7556 7557 7558 #ifdef ENABLE_CLASSIC 7559 // general gap classic 7560 done = hci_run_general_gap_classic(); 7561 if (done) return; 7562 #endif 7563 7564 #ifdef ENABLE_BLE 7565 // general gap le 7566 done = hci_run_general_gap_le(); 7567 if (done) return; 7568 7569 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7570 // ISO related tasks, e.g. BIG create/terminate/sync 7571 done = hci_run_iso_tasks(); 7572 if (done) return; 7573 #endif 7574 #endif 7575 7576 // send pending HCI commands 7577 hci_run_general_pending_commands(); 7578 } 7579 7580 #ifdef ENABLE_CLASSIC 7581 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7582 // bits 6-9 are 'don't use' 7583 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7584 7585 // restrict packet types to local and remote supported 7586 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7587 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7588 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7589 } 7590 #endif 7591 7592 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7593 // house-keeping 7594 7595 #ifdef ENABLE_CLASSIC 7596 bd_addr_t addr; 7597 hci_connection_t * conn; 7598 #endif 7599 #ifdef ENABLE_LE_CENTRAL 7600 uint8_t initiator_filter_policy; 7601 #endif 7602 7603 uint16_t opcode = little_endian_read_16(packet, 0); 7604 switch (opcode) { 7605 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7606 hci_stack->loopback_mode = packet[3]; 7607 break; 7608 7609 #ifdef ENABLE_CLASSIC 7610 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7611 reverse_bd_addr(&packet[3], addr); 7612 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7613 7614 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7615 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7616 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7617 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7618 } 7619 7620 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7621 if (!conn) { 7622 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7623 if (!conn) { 7624 // notify client that alloc failed 7625 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7626 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7627 } 7628 conn->state = SEND_CREATE_CONNECTION; 7629 } 7630 7631 log_info("conn state %u", conn->state); 7632 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7633 switch (conn->state) { 7634 // if connection active exists 7635 case OPEN: 7636 // and OPEN, emit connection complete command 7637 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7638 // packet not sent to controller 7639 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7640 case RECEIVED_DISCONNECTION_COMPLETE: 7641 // create connection triggered in disconnect complete event, let's do it now 7642 break; 7643 case SEND_CREATE_CONNECTION: 7644 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7645 if (hci_classic_operation_active()){ 7646 return ERROR_CODE_SUCCESS; 7647 } 7648 #endif 7649 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7650 break; 7651 default: 7652 // otherwise, just ignore as it is already in the open process 7653 // packet not sent to controller 7654 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7655 } 7656 conn->state = SENT_CREATE_CONNECTION; 7657 7658 // track outgoing connection 7659 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7660 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7661 break; 7662 7663 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7664 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7665 if (conn == NULL) { 7666 // neither SCO nor ACL connection for con handle 7667 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7668 } else { 7669 uint16_t remote_supported_sco_packets; 7670 switch (conn->address_type){ 7671 case BD_ADDR_TYPE_ACL: 7672 // assert SCO connection does not exit 7673 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7674 return ERROR_CODE_COMMAND_DISALLOWED; 7675 } 7676 // cache remote sco packet types 7677 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7678 7679 // allocate connection struct 7680 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7681 HCI_ROLE_MASTER); 7682 if (!conn) { 7683 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7684 } 7685 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7686 break; 7687 case BD_ADDR_TYPE_SCO: 7688 // update of existing SCO connection 7689 break; 7690 default: 7691 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7692 } 7693 } 7694 7695 // conn refers to hci connection of type sco now 7696 7697 conn->state = SENT_CREATE_CONNECTION; 7698 7699 // track outgoing connection to handle command status with error 7700 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7701 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7702 7703 // setup_synchronous_connection? Voice setting at offset 22 7704 // TODO: compare to current setting if sco connection already active 7705 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7706 7707 // derive sco payload length from packet types 7708 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7709 break; 7710 7711 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7712 // get SCO connection 7713 reverse_bd_addr(&packet[3], addr); 7714 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7715 if (conn == NULL){ 7716 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7717 } 7718 7719 conn->state = ACCEPTED_CONNECTION_REQUEST; 7720 7721 // track outgoing connection to handle command status with error 7722 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7723 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7724 7725 // accept_synchronous_connection? Voice setting at offset 18 7726 // TODO: compare to current setting if sco connection already active 7727 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7728 7729 // derive sco payload length from packet types 7730 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7731 break; 7732 #endif 7733 7734 #ifdef ENABLE_BLE 7735 #ifdef ENABLE_LE_CENTRAL 7736 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7737 // white list used? 7738 initiator_filter_policy = packet[7]; 7739 switch (initiator_filter_policy) { 7740 case 0: 7741 // whitelist not used 7742 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7743 break; 7744 case 1: 7745 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7746 break; 7747 default: 7748 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7749 break; 7750 } 7751 // track outgoing connection 7752 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7753 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7754 break; 7755 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7756 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7757 // white list used? 7758 initiator_filter_policy = packet[3]; 7759 switch (initiator_filter_policy) { 7760 case 0: 7761 // whitelist not used 7762 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7763 break; 7764 case 1: 7765 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7766 break; 7767 default: 7768 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7769 break; 7770 } 7771 // track outgoing connection 7772 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7773 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7774 break; 7775 #endif 7776 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7777 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7778 break; 7779 #endif 7780 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7781 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7782 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7783 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7784 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7785 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7786 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7787 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7788 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7789 case HCI_OPCODE_HCI_LE_READ_PHY: 7790 case HCI_OPCODE_HCI_LE_SET_PHY: 7791 // conection handle is first command parameter 7792 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7793 break; 7794 #endif 7795 #endif /* ENABLE_BLE */ 7796 default: 7797 break; 7798 } 7799 7800 hci_stack->num_cmd_packets--; 7801 7802 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7803 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7804 if (err != 0){ 7805 return ERROR_CODE_HARDWARE_FAILURE; 7806 } 7807 return ERROR_CODE_SUCCESS; 7808 } 7809 7810 // disconnect because of security block 7811 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7812 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7813 if (!connection) return; 7814 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7815 } 7816 7817 7818 // Configure Secure Simple Pairing 7819 7820 #ifdef ENABLE_CLASSIC 7821 7822 // enable will enable SSP during init 7823 void gap_ssp_set_enable(int enable){ 7824 hci_stack->ssp_enable = enable; 7825 } 7826 7827 static int hci_local_ssp_activated(void){ 7828 return gap_ssp_supported() && hci_stack->ssp_enable; 7829 } 7830 7831 // if set, BTstack will respond to io capability request using authentication requirement 7832 void gap_ssp_set_io_capability(int io_capability){ 7833 hci_stack->ssp_io_capability = io_capability; 7834 } 7835 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7836 hci_stack->ssp_authentication_requirement = authentication_requirement; 7837 } 7838 7839 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7840 void gap_ssp_set_auto_accept(int auto_accept){ 7841 hci_stack->ssp_auto_accept = auto_accept; 7842 } 7843 7844 void gap_secure_connections_enable(bool enable){ 7845 hci_stack->secure_connections_enable = enable; 7846 } 7847 bool gap_secure_connections_active(void){ 7848 return hci_stack->secure_connections_active; 7849 } 7850 7851 #endif 7852 7853 // va_list part of hci_send_cmd 7854 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7855 if (!hci_can_send_command_packet_now()){ 7856 log_error("hci_send_cmd called but cannot send packet now"); 7857 return ERROR_CODE_COMMAND_DISALLOWED; 7858 } 7859 7860 // for HCI INITIALIZATION 7861 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 7862 hci_stack->last_cmd_opcode = cmd->opcode; 7863 7864 hci_reserve_packet_buffer(); 7865 uint8_t * packet = hci_stack->hci_packet_buffer; 7866 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 7867 uint8_t status = hci_send_cmd_packet(packet, size); 7868 7869 // release packet buffer on error or for synchronous transport implementations 7870 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7871 hci_release_packet_buffer(); 7872 } 7873 7874 return status; 7875 } 7876 7877 /** 7878 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7879 */ 7880 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7881 va_list argptr; 7882 va_start(argptr, cmd); 7883 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7884 va_end(argptr); 7885 return status; 7886 } 7887 7888 // Create various non-HCI events. 7889 // TODO: generalize, use table similar to hci_create_command 7890 7891 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7892 // dump packet 7893 if (dump) { 7894 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7895 } 7896 7897 // dispatch to all event handlers 7898 btstack_linked_list_iterator_t it; 7899 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7900 while (btstack_linked_list_iterator_has_next(&it)){ 7901 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7902 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7903 } 7904 } 7905 7906 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7907 if (!hci_stack->acl_packet_handler) return; 7908 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7909 } 7910 7911 #ifdef ENABLE_CLASSIC 7912 static void hci_notify_if_sco_can_send_now(void){ 7913 // notify SCO sender if waiting 7914 if (!hci_stack->sco_waiting_for_can_send_now) return; 7915 if (hci_can_send_sco_packet_now()){ 7916 hci_stack->sco_waiting_for_can_send_now = 0; 7917 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7918 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 7919 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7920 } 7921 } 7922 7923 // parsing end emitting has been merged to reduce code size 7924 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7925 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7926 7927 uint8_t * eir_data; 7928 ad_context_t context; 7929 const uint8_t * name; 7930 uint8_t name_len; 7931 7932 if (size < 3) return; 7933 7934 int event_type = hci_event_packet_get_type(packet); 7935 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7936 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7937 7938 switch (event_type){ 7939 case HCI_EVENT_INQUIRY_RESULT: 7940 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7941 if (size != (3 + (num_responses * 14))) return; 7942 break; 7943 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7944 if (size != 257) return; 7945 if (num_responses != 1) return; 7946 break; 7947 default: 7948 return; 7949 } 7950 7951 // event[1] is set at the end 7952 int i; 7953 for (i=0; i<num_responses;i++){ 7954 memset(event, 0, sizeof(event)); 7955 event[0] = GAP_EVENT_INQUIRY_RESULT; 7956 uint8_t event_size = 27; // if name is not set by EIR 7957 7958 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7959 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7960 (void)memcpy(&event[9], 7961 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7962 3); // class of device 7963 (void)memcpy(&event[12], 7964 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7965 2); // clock offset 7966 7967 switch (event_type){ 7968 case HCI_EVENT_INQUIRY_RESULT: 7969 // 14,15,16,17 = 0, size 18 7970 break; 7971 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7972 event[14] = 1; 7973 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7974 // 16,17 = 0, size 18 7975 break; 7976 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7977 event[14] = 1; 7978 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7979 // EIR packets only contain a single inquiry response 7980 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7981 name = NULL; 7982 // Iterate over EIR data 7983 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7984 uint8_t data_type = ad_iterator_get_data_type(&context); 7985 uint8_t data_size = ad_iterator_get_data_len(&context); 7986 const uint8_t * data = ad_iterator_get_data(&context); 7987 // Prefer Complete Local Name over Shortened Local Name 7988 switch (data_type){ 7989 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7990 if (name) continue; 7991 /* fall through */ 7992 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7993 name = data; 7994 name_len = data_size; 7995 break; 7996 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7997 if (data_size != 8) break; 7998 event[16] = 1; 7999 memcpy(&event[17], data, 8); 8000 break; 8001 default: 8002 break; 8003 } 8004 } 8005 if (name){ 8006 event[25] = 1; 8007 // truncate name if needed 8008 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8009 event[26] = len; 8010 (void)memcpy(&event[27], name, len); 8011 event_size += len; 8012 } 8013 break; 8014 default: 8015 return; 8016 } 8017 event[1] = event_size - 2; 8018 hci_emit_event(event, event_size, 1); 8019 } 8020 } 8021 #endif 8022 8023 void hci_emit_state(void){ 8024 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8025 uint8_t event[3]; 8026 event[0] = BTSTACK_EVENT_STATE; 8027 event[1] = sizeof(event) - 2u; 8028 event[2] = hci_stack->state; 8029 hci_emit_event(event, sizeof(event), 1); 8030 } 8031 8032 #ifdef ENABLE_CLASSIC 8033 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8034 uint8_t event[13]; 8035 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8036 event[1] = sizeof(event) - 2; 8037 event[2] = status; 8038 little_endian_store_16(event, 3, con_handle); 8039 reverse_bd_addr(address, &event[5]); 8040 event[11] = 1; // ACL connection 8041 event[12] = 0; // encryption disabled 8042 hci_emit_event(event, sizeof(event), 1); 8043 } 8044 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8045 if (disable_l2cap_timeouts) return; 8046 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8047 uint8_t event[4]; 8048 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8049 event[1] = sizeof(event) - 2; 8050 little_endian_store_16(event, 2, conn->con_handle); 8051 hci_emit_event(event, sizeof(event), 1); 8052 } 8053 #endif 8054 8055 #ifdef ENABLE_BLE 8056 #ifdef ENABLE_LE_CENTRAL 8057 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){ 8058 uint8_t hci_event[21]; 8059 hci_event[0] = HCI_EVENT_LE_META; 8060 hci_event[1] = sizeof(hci_event) - 2u; 8061 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8062 hci_event[3] = status; 8063 little_endian_store_16(hci_event, 4, con_handle); 8064 hci_event[6] = 0; // TODO: role 8065 hci_event[7] = address_type; 8066 reverse_bd_addr(address, &hci_event[8]); 8067 little_endian_store_16(hci_event, 14, 0); // interval 8068 little_endian_store_16(hci_event, 16, 0); // latency 8069 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8070 hci_event[20] = 0; // master clock accuracy 8071 hci_emit_event(hci_event, sizeof(hci_event), 1); 8072 // emit GAP event, too 8073 uint8_t gap_event[36]; 8074 hci_create_gap_connection_complete_event(hci_event, gap_event); 8075 hci_emit_event(gap_event, sizeof(gap_event), 1); 8076 } 8077 #endif 8078 #endif 8079 8080 static void hci_emit_transport_packet_sent(void){ 8081 // notify upper stack that it might be possible to send again 8082 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8083 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 8084 } 8085 8086 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8087 uint8_t event[6]; 8088 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8089 event[1] = sizeof(event) - 2u; 8090 event[2] = 0; // status = OK 8091 little_endian_store_16(event, 3, con_handle); 8092 event[5] = reason; 8093 hci_emit_event(event, sizeof(event), 1); 8094 } 8095 8096 static void hci_emit_nr_connections_changed(void){ 8097 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8098 uint8_t event[3]; 8099 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8100 event[1] = sizeof(event) - 2u; 8101 event[2] = nr_hci_connections(); 8102 hci_emit_event(event, sizeof(event), 1); 8103 } 8104 8105 static void hci_emit_hci_open_failed(void){ 8106 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8107 uint8_t event[2]; 8108 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8109 event[1] = sizeof(event) - 2u; 8110 hci_emit_event(event, sizeof(event), 1); 8111 } 8112 8113 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8114 log_info("hci_emit_dedicated_bonding_result %u ", status); 8115 uint8_t event[9]; 8116 int pos = 0; 8117 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8118 event[pos++] = sizeof(event) - 2u; 8119 event[pos++] = status; 8120 reverse_bd_addr(address, &event[pos]); 8121 hci_emit_event(event, sizeof(event), 1); 8122 } 8123 8124 8125 #ifdef ENABLE_CLASSIC 8126 8127 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8128 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8129 uint8_t event[5]; 8130 int pos = 0; 8131 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8132 event[pos++] = sizeof(event) - 2; 8133 little_endian_store_16(event, 2, con_handle); 8134 pos += 2; 8135 event[pos++] = level; 8136 hci_emit_event(event, sizeof(event), 1); 8137 } 8138 8139 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8140 if (!connection) return LEVEL_0; 8141 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8142 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8143 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8144 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8145 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8146 // LEVEL 4 always requires 128 bit encrytion key size 8147 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8148 security_level = LEVEL_3; 8149 } 8150 return security_level; 8151 } 8152 8153 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8154 uint8_t event[4]; 8155 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8156 event[1] = sizeof(event) - 2; 8157 event[2] = discoverable; 8158 event[3] = connectable; 8159 hci_emit_event(event, sizeof(event), 1); 8160 } 8161 8162 // query if remote side supports eSCO 8163 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8164 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8165 if (!connection) return false; 8166 return (connection->remote_supported_features[0] & 1) != 0; 8167 } 8168 8169 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8170 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8171 if (!connection) return 0; 8172 return connection->remote_supported_sco_packets; 8173 } 8174 8175 static bool hci_ssp_supported(hci_connection_t * connection){ 8176 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8177 return (connection->bonding_flags & mask) == mask; 8178 } 8179 8180 // query if remote side supports SSP 8181 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8182 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8183 if (!connection) return false; 8184 return hci_ssp_supported(connection) ? 1 : 0; 8185 } 8186 8187 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8188 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8189 } 8190 8191 /** 8192 * Check if remote supported features query has completed 8193 */ 8194 bool hci_remote_features_available(hci_con_handle_t handle){ 8195 hci_connection_t * connection = hci_connection_for_handle(handle); 8196 if (!connection) return false; 8197 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8198 } 8199 8200 /** 8201 * Trigger remote supported features query 8202 */ 8203 8204 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8205 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8206 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8207 } 8208 } 8209 8210 void hci_remote_features_query(hci_con_handle_t con_handle){ 8211 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8212 if (!connection) return; 8213 hci_trigger_remote_features_for_connection(connection); 8214 hci_run(); 8215 } 8216 8217 // GAP API 8218 /** 8219 * @bbrief enable/disable bonding. default is enabled 8220 * @praram enabled 8221 */ 8222 void gap_set_bondable_mode(int enable){ 8223 hci_stack->bondable = enable ? 1 : 0; 8224 } 8225 /** 8226 * @brief Get bondable mode. 8227 * @return 1 if bondable 8228 */ 8229 int gap_get_bondable_mode(void){ 8230 return hci_stack->bondable; 8231 } 8232 8233 /** 8234 * @brief map link keys to security levels 8235 */ 8236 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8237 switch (link_key_type){ 8238 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8239 return LEVEL_4; 8240 case COMBINATION_KEY: 8241 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8242 return LEVEL_3; 8243 default: 8244 return LEVEL_2; 8245 } 8246 } 8247 8248 /** 8249 * @brief map link keys to secure connection yes/no 8250 */ 8251 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8252 switch (link_key_type){ 8253 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8254 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8255 return true; 8256 default: 8257 return false; 8258 } 8259 } 8260 8261 /** 8262 * @brief map link keys to authenticated 8263 */ 8264 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8265 switch (link_key_type){ 8266 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8267 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8268 return true; 8269 default: 8270 return false; 8271 } 8272 } 8273 8274 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8275 log_info("gap_mitm_protection_required_for_security_level %u", level); 8276 return level > LEVEL_2; 8277 } 8278 8279 /** 8280 * @brief get current security level 8281 */ 8282 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8283 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8284 if (!connection) return LEVEL_0; 8285 return gap_security_level_for_connection(connection); 8286 } 8287 8288 /** 8289 * @brief request connection to device to 8290 * @result GAP_AUTHENTICATION_RESULT 8291 */ 8292 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8293 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8294 if (!connection){ 8295 hci_emit_security_level(con_handle, LEVEL_0); 8296 return; 8297 } 8298 8299 btstack_assert(hci_is_le_connection(connection) == false); 8300 8301 // 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) 8302 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8303 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8304 requested_level = LEVEL_4; 8305 } 8306 8307 gap_security_level_t current_level = gap_security_level(con_handle); 8308 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8309 requested_level, connection->requested_security_level, current_level); 8310 8311 // authentication active if authentication request was sent or planned level > 0 8312 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8313 if (authentication_active){ 8314 // authentication already active 8315 if (connection->requested_security_level < requested_level){ 8316 // increase requested level as new level is higher 8317 // TODO: handle re-authentication when done 8318 connection->requested_security_level = requested_level; 8319 } 8320 } else { 8321 // no request active, notify if security sufficient 8322 if (requested_level <= current_level){ 8323 hci_emit_security_level(con_handle, current_level); 8324 return; 8325 } 8326 8327 // store request 8328 connection->requested_security_level = requested_level; 8329 8330 // start to authenticate connection 8331 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8332 8333 // request remote features if not already active, also trigger hci_run 8334 hci_remote_features_query(con_handle); 8335 } 8336 } 8337 8338 /** 8339 * @brief start dedicated bonding with device. disconnect after bonding 8340 * @param device 8341 * @param request MITM protection 8342 * @result GAP_DEDICATED_BONDING_COMPLETE 8343 */ 8344 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8345 8346 // create connection state machine 8347 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8348 8349 if (!connection){ 8350 return BTSTACK_MEMORY_ALLOC_FAILED; 8351 } 8352 8353 // delete link key 8354 gap_drop_link_key_for_bd_addr(device); 8355 8356 // configure LEVEL_2/3, dedicated bonding 8357 connection->state = SEND_CREATE_CONNECTION; 8358 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8359 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8360 connection->bonding_flags = BONDING_DEDICATED; 8361 8362 hci_run(); 8363 8364 return 0; 8365 } 8366 8367 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8368 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8369 if (connection == NULL){ 8370 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8371 } 8372 if (defer){ 8373 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8374 } else { 8375 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8376 // trigger disconnect 8377 hci_run(); 8378 } 8379 return ERROR_CODE_SUCCESS; 8380 } 8381 8382 void gap_set_local_name(const char * local_name){ 8383 hci_stack->local_name = local_name; 8384 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8385 // also update EIR if not set by user 8386 if (hci_stack->eir_data == NULL){ 8387 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8388 } 8389 hci_run(); 8390 } 8391 #endif 8392 8393 8394 #ifdef ENABLE_BLE 8395 8396 #ifdef ENABLE_LE_CENTRAL 8397 void gap_start_scan(void){ 8398 hci_stack->le_scanning_enabled = true; 8399 hci_run(); 8400 } 8401 8402 void gap_stop_scan(void){ 8403 hci_stack->le_scanning_enabled = false; 8404 hci_run(); 8405 } 8406 8407 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8408 hci_stack->le_scan_type = scan_type; 8409 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8410 hci_stack->le_scan_interval = scan_interval; 8411 hci_stack->le_scan_window = scan_window; 8412 hci_stack->le_scanning_param_update = true; 8413 hci_run(); 8414 } 8415 8416 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8417 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8418 } 8419 8420 void gap_set_scan_duplicate_filter(bool enabled){ 8421 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8422 } 8423 8424 void gap_set_scan_phys(uint8_t phys){ 8425 // LE Coded and LE 1M PHY 8426 hci_stack->le_scan_phys = phys & 0x05; 8427 } 8428 8429 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8430 // disallow le connection if outgoing already active 8431 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8432 log_error("le connect already active"); 8433 return ERROR_CODE_COMMAND_DISALLOWED; 8434 } 8435 8436 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8437 if (conn == NULL) { 8438 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8439 if (conn == false){ 8440 // alloc failed 8441 log_info("gap_connect: failed to alloc hci_connection_t"); 8442 return BTSTACK_MEMORY_ALLOC_FAILED; 8443 } 8444 } else { 8445 switch (conn->state) { 8446 case RECEIVED_DISCONNECTION_COMPLETE: 8447 // connection was just disconnected, reset state and allow re-connect 8448 conn->role = HCI_ROLE_MASTER; 8449 break; 8450 default: 8451 return ERROR_CODE_COMMAND_DISALLOWED; 8452 } 8453 } 8454 8455 // set le connecting state 8456 if (hci_is_le_connection_type(addr_type)){ 8457 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8458 } 8459 8460 // trigger connect 8461 log_info("gap_connect: send create connection next"); 8462 conn->state = SEND_CREATE_CONNECTION; 8463 hci_run(); 8464 return ERROR_CODE_SUCCESS; 8465 } 8466 8467 // @assumption: only a single outgoing LE Connection exists 8468 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8469 btstack_linked_item_t *it; 8470 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8471 hci_connection_t * conn = (hci_connection_t *) it; 8472 if (hci_is_le_connection(conn)){ 8473 switch (conn->state){ 8474 case SEND_CREATE_CONNECTION: 8475 case SENT_CREATE_CONNECTION: 8476 return conn; 8477 default: 8478 break; 8479 }; 8480 } 8481 } 8482 return NULL; 8483 } 8484 8485 uint8_t gap_connect_cancel(void){ 8486 hci_connection_t * conn; 8487 switch (hci_stack->le_connecting_request){ 8488 case LE_CONNECTING_IDLE: 8489 break; 8490 case LE_CONNECTING_WHITELIST: 8491 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8492 hci_run(); 8493 break; 8494 case LE_CONNECTING_DIRECT: 8495 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8496 conn = gap_get_outgoing_le_connection(); 8497 if (conn == NULL){ 8498 hci_run(); 8499 } else { 8500 switch (conn->state){ 8501 case SEND_CREATE_CONNECTION: 8502 // skip sending create connection and emit event instead 8503 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8504 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8505 btstack_memory_hci_connection_free( conn ); 8506 break; 8507 case SENT_CREATE_CONNECTION: 8508 // let hci_run_general_gap_le cancel outgoing connection 8509 hci_run(); 8510 break; 8511 default: 8512 break; 8513 } 8514 } 8515 break; 8516 default: 8517 btstack_unreachable(); 8518 break; 8519 } 8520 return ERROR_CODE_SUCCESS; 8521 } 8522 8523 /** 8524 * @brief Set connection parameters for outgoing connections 8525 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8526 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8527 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8528 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8529 * @param conn_latency, default: 4 8530 * @param supervision_timeout (unit: 10ms), default: 720 ms 8531 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8532 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8533 */ 8534 8535 void gap_set_connection_phys(uint8_t phys){ 8536 // LE Coded, LE 1M, LE 2M PHY 8537 hci_stack->le_connection_phys = phys & 7; 8538 } 8539 8540 #endif 8541 8542 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8543 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8544 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8545 hci_stack->le_connection_scan_interval = conn_scan_interval; 8546 hci_stack->le_connection_scan_window = conn_scan_window; 8547 hci_stack->le_connection_interval_min = conn_interval_min; 8548 hci_stack->le_connection_interval_max = conn_interval_max; 8549 hci_stack->le_connection_latency = conn_latency; 8550 hci_stack->le_supervision_timeout = supervision_timeout; 8551 hci_stack->le_minimum_ce_length = min_ce_length; 8552 hci_stack->le_maximum_ce_length = max_ce_length; 8553 } 8554 8555 /** 8556 * @brief Updates the connection parameters for a given LE connection 8557 * @param handle 8558 * @param conn_interval_min (unit: 1.25ms) 8559 * @param conn_interval_max (unit: 1.25ms) 8560 * @param conn_latency 8561 * @param supervision_timeout (unit: 10ms) 8562 * @return 0 if ok 8563 */ 8564 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8565 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8566 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8567 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8568 connection->le_conn_interval_min = conn_interval_min; 8569 connection->le_conn_interval_max = conn_interval_max; 8570 connection->le_conn_latency = conn_latency; 8571 connection->le_supervision_timeout = supervision_timeout; 8572 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8573 hci_run(); 8574 return 0; 8575 } 8576 8577 /** 8578 * @brief Request an update of the connection parameter for a given LE connection 8579 * @param handle 8580 * @param conn_interval_min (unit: 1.25ms) 8581 * @param conn_interval_max (unit: 1.25ms) 8582 * @param conn_latency 8583 * @param supervision_timeout (unit: 10ms) 8584 * @return 0 if ok 8585 */ 8586 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8587 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8588 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8589 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8590 connection->le_conn_interval_min = conn_interval_min; 8591 connection->le_conn_interval_max = conn_interval_max; 8592 connection->le_conn_latency = conn_latency; 8593 connection->le_supervision_timeout = supervision_timeout; 8594 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8595 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8596 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8597 return 0; 8598 } 8599 8600 #ifdef ENABLE_LE_PERIPHERAL 8601 8602 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8603 static void hci_assert_advertisement_set_0_ready(void){ 8604 // force advertising set creation for legacy LE Advertising 8605 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8606 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8607 } 8608 } 8609 #endif 8610 8611 /** 8612 * @brief Set Advertisement Data 8613 * @param advertising_data_length 8614 * @param advertising_data (max 31 octets) 8615 * @note data is not copied, pointer has to stay valid 8616 */ 8617 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8618 hci_stack->le_advertisements_data_len = advertising_data_length; 8619 hci_stack->le_advertisements_data = advertising_data; 8620 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8621 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8622 hci_assert_advertisement_set_0_ready(); 8623 #endif 8624 hci_run(); 8625 } 8626 8627 /** 8628 * @brief Set Scan Response Data 8629 * @param advertising_data_length 8630 * @param advertising_data (max 31 octets) 8631 * @note data is not copied, pointer has to stay valid 8632 */ 8633 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8634 hci_stack->le_scan_response_data_len = scan_response_data_length; 8635 hci_stack->le_scan_response_data = scan_response_data; 8636 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8637 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8638 hci_assert_advertisement_set_0_ready(); 8639 #endif 8640 hci_run(); 8641 } 8642 8643 /** 8644 * @brief Set Advertisement Parameters 8645 * @param adv_int_min 8646 * @param adv_int_max 8647 * @param adv_type 8648 * @param direct_address_type 8649 * @param direct_address 8650 * @param channel_map 8651 * @param filter_policy 8652 * 8653 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8654 */ 8655 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8656 uint8_t direct_address_typ, bd_addr_t direct_address, 8657 uint8_t channel_map, uint8_t filter_policy) { 8658 8659 hci_stack->le_advertisements_interval_min = adv_int_min; 8660 hci_stack->le_advertisements_interval_max = adv_int_max; 8661 hci_stack->le_advertisements_type = adv_type; 8662 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8663 hci_stack->le_advertisements_channel_map = channel_map; 8664 hci_stack->le_advertisements_filter_policy = filter_policy; 8665 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8666 6); 8667 8668 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8669 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8670 hci_run(); 8671 } 8672 8673 /** 8674 * @brief Enable/Disable Advertisements 8675 * @param enabled 8676 */ 8677 void gap_advertisements_enable(int enabled){ 8678 if (enabled == 0){ 8679 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8680 } else { 8681 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8682 } 8683 hci_update_advertisements_enabled_for_current_roles(); 8684 hci_run(); 8685 } 8686 8687 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8688 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8689 btstack_linked_list_iterator_t it; 8690 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8691 while (btstack_linked_list_iterator_has_next(&it)){ 8692 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8693 if ( item->advertising_handle == advertising_handle ) { 8694 return item; 8695 } 8696 } 8697 return NULL; 8698 } 8699 8700 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8701 hci_stack->le_resolvable_private_address_update_s = update_s; 8702 hci_run(); 8703 return ERROR_CODE_SUCCESS; 8704 } 8705 8706 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8707 // find free advertisement handle 8708 uint8_t advertisement_handle; 8709 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8710 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8711 } 8712 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8713 // clear 8714 memset(storage, 0, sizeof(le_advertising_set_t)); 8715 // copy params 8716 storage->advertising_handle = advertisement_handle; 8717 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8718 // add to list 8719 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8720 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8721 *out_advertising_handle = advertisement_handle; 8722 // set tasks and start 8723 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8724 hci_run(); 8725 return ERROR_CODE_SUCCESS; 8726 } 8727 8728 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8729 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8730 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8731 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8732 // set tasks and start 8733 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8734 hci_run(); 8735 return ERROR_CODE_SUCCESS; 8736 } 8737 8738 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8739 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8740 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8741 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8742 return ERROR_CODE_SUCCESS; 8743 } 8744 8745 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8746 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8747 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8748 memcpy(advertising_set->random_address, random_address, 6); 8749 // set tasks and start 8750 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8751 hci_run(); 8752 return ERROR_CODE_SUCCESS; 8753 } 8754 8755 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8756 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8757 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8758 advertising_set->adv_data = advertising_data; 8759 advertising_set->adv_data_len = advertising_data_length; 8760 // set tasks and start 8761 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8762 hci_run(); 8763 return ERROR_CODE_SUCCESS; 8764 } 8765 8766 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){ 8767 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8768 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8769 advertising_set->scan_data = scan_response_data; 8770 advertising_set->scan_data_len = scan_response_data_length; 8771 // set tasks and start 8772 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8773 hci_run(); 8774 return ERROR_CODE_SUCCESS; 8775 } 8776 8777 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8778 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8779 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8780 advertising_set->enable_timeout = timeout; 8781 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8782 // set tasks and start 8783 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8784 hci_run(); 8785 return ERROR_CODE_SUCCESS; 8786 } 8787 8788 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8789 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8790 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8791 // set tasks and start 8792 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8793 hci_run(); 8794 return ERROR_CODE_SUCCESS; 8795 } 8796 8797 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8798 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8799 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8800 // set tasks and start 8801 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8802 hci_run(); 8803 return ERROR_CODE_SUCCESS; 8804 } 8805 8806 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8807 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8808 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8809 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8810 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8811 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8812 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8813 // set tasks and start 8814 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8815 hci_run(); 8816 return ERROR_CODE_SUCCESS; 8817 } 8818 8819 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8820 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8821 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8822 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8823 return ERROR_CODE_SUCCESS; 8824 } 8825 8826 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8827 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8828 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8829 advertising_set->periodic_data = periodic_data; 8830 advertising_set->periodic_data_len = periodic_data_length; 8831 // set tasks and start 8832 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8833 hci_run(); 8834 return ERROR_CODE_SUCCESS; 8835 } 8836 8837 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8838 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8839 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8840 // set tasks and start 8841 advertising_set->periodic_include_adi = include_adi; 8842 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8843 hci_run(); 8844 return ERROR_CODE_SUCCESS; 8845 } 8846 8847 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8848 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8849 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8850 // set tasks and start 8851 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8852 hci_run(); 8853 return ERROR_CODE_SUCCESS; 8854 } 8855 8856 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8857 hci_stack->le_past_mode = mode; 8858 hci_stack->le_past_skip = skip; 8859 hci_stack->le_past_sync_timeout = sync_timeout; 8860 hci_stack->le_past_cte_type = cte_type; 8861 hci_stack->le_past_set_default_params = true; 8862 hci_run(); 8863 return ERROR_CODE_SUCCESS; 8864 } 8865 8866 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8867 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8868 if (hci_connection == NULL){ 8869 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8870 } 8871 hci_connection->le_past_sync_handle = sync_handle; 8872 hci_connection->le_past_service_data = service_data; 8873 hci_run(); 8874 return ERROR_CODE_SUCCESS; 8875 } 8876 8877 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8878 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8879 if (hci_connection == NULL){ 8880 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8881 } 8882 hci_connection->le_past_advertising_handle = advertising_handle; 8883 hci_connection->le_past_service_data = service_data; 8884 hci_run(); 8885 return ERROR_CODE_SUCCESS; 8886 } 8887 8888 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8889 8890 #endif 8891 8892 #endif 8893 8894 void hci_le_set_own_address_type(uint8_t own_address_type){ 8895 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8896 if (own_address_type == hci_stack->le_own_addr_type) return; 8897 hci_stack->le_own_addr_type = own_address_type; 8898 8899 #ifdef ENABLE_LE_PERIPHERAL 8900 // update advertisement parameters, too 8901 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8902 hci_run(); 8903 #endif 8904 #ifdef ENABLE_LE_CENTRAL 8905 // note: we don't update scan parameters or modify ongoing connection attempts 8906 #endif 8907 } 8908 8909 void hci_le_random_address_set(const bd_addr_t random_address){ 8910 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 8911 memcpy(hci_stack->le_random_address, random_address, 6); 8912 hci_stack->le_random_address_set = true; 8913 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 8914 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8915 if (hci_le_extended_advertising_supported()){ 8916 hci_assert_advertisement_set_0_ready(); 8917 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8918 } 8919 #endif 8920 hci_run(); 8921 } 8922 8923 #endif 8924 8925 uint8_t gap_disconnect(hci_con_handle_t handle){ 8926 hci_connection_t * conn = hci_connection_for_handle(handle); 8927 if (!conn){ 8928 hci_emit_disconnection_complete(handle, 0); 8929 return 0; 8930 } 8931 // ignore if already disconnected 8932 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8933 return 0; 8934 } 8935 conn->state = SEND_DISCONNECT; 8936 hci_run(); 8937 return 0; 8938 } 8939 8940 int gap_read_rssi(hci_con_handle_t con_handle){ 8941 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8942 if (hci_connection == NULL) return 0; 8943 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8944 hci_run(); 8945 return 1; 8946 } 8947 8948 /** 8949 * @brief Get connection type 8950 * @param con_handle 8951 * @result connection_type 8952 */ 8953 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 8954 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8955 if (!conn) return GAP_CONNECTION_INVALID; 8956 switch (conn->address_type){ 8957 case BD_ADDR_TYPE_LE_PUBLIC: 8958 case BD_ADDR_TYPE_LE_RANDOM: 8959 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 8960 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 8961 return GAP_CONNECTION_LE; 8962 case BD_ADDR_TYPE_SCO: 8963 return GAP_CONNECTION_SCO; 8964 case BD_ADDR_TYPE_ACL: 8965 return GAP_CONNECTION_ACL; 8966 default: 8967 return GAP_CONNECTION_INVALID; 8968 } 8969 } 8970 8971 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 8972 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 8973 if (!conn) return HCI_ROLE_INVALID; 8974 return (hci_role_t) conn->role; 8975 } 8976 8977 8978 #ifdef ENABLE_CLASSIC 8979 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 8980 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8981 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8982 conn->request_role = role; 8983 hci_run(); 8984 return ERROR_CODE_SUCCESS; 8985 } 8986 #endif 8987 8988 #ifdef ENABLE_BLE 8989 8990 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){ 8991 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8992 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8993 8994 conn->le_phy_update_all_phys = all_phys; 8995 conn->le_phy_update_tx_phys = tx_phys; 8996 conn->le_phy_update_rx_phys = rx_phys; 8997 conn->le_phy_update_phy_options = (uint8_t) phy_options; 8998 8999 hci_run(); 9000 9001 return 0; 9002 } 9003 9004 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9005 9006 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9007 // incorrect configuration: 9008 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9009 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9010 btstack_assert(false); 9011 #endif 9012 9013 // check if already in list 9014 btstack_linked_list_iterator_t it; 9015 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9016 while (btstack_linked_list_iterator_has_next(&it)) { 9017 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9018 if (entry->address_type != address_type) { 9019 continue; 9020 } 9021 if (memcmp(entry->address, address, 6) != 0) { 9022 continue; 9023 } 9024 9025 // if already on controller: 9026 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9027 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9028 // drop remove request 9029 entry->state = LE_WHITELIST_ON_CONTROLLER; 9030 return ERROR_CODE_SUCCESS; 9031 } else { 9032 // disallow as already on controller 9033 return ERROR_CODE_COMMAND_DISALLOWED; 9034 } 9035 } 9036 9037 // assume scheduled to add 9038 return ERROR_CODE_COMMAND_DISALLOWED; 9039 } 9040 9041 // alloc and add to list 9042 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9043 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9044 entry->address_type = address_type; 9045 (void)memcpy(entry->address, address, 6); 9046 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9047 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9048 return ERROR_CODE_SUCCESS; 9049 } 9050 9051 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9052 btstack_linked_list_iterator_t it; 9053 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9054 while (btstack_linked_list_iterator_has_next(&it)){ 9055 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9056 if (entry->address_type != address_type) { 9057 continue; 9058 } 9059 if (memcmp(entry->address, address, 6) != 0) { 9060 continue; 9061 } 9062 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9063 // remove from controller if already present 9064 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9065 } else { 9066 // directly remove entry from whitelist 9067 btstack_linked_list_iterator_remove(&it); 9068 btstack_memory_whitelist_entry_free(entry); 9069 } 9070 return ERROR_CODE_SUCCESS; 9071 } 9072 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9073 } 9074 9075 static void hci_whitelist_clear(void){ 9076 btstack_linked_list_iterator_t it; 9077 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9078 while (btstack_linked_list_iterator_has_next(&it)){ 9079 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9080 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9081 // remove from controller if already present 9082 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9083 continue; 9084 } 9085 // directly remove entry from whitelist 9086 btstack_linked_list_iterator_remove(&it); 9087 btstack_memory_whitelist_entry_free(entry); 9088 } 9089 } 9090 9091 /** 9092 * @brief Clear Whitelist 9093 * @return 0 if ok 9094 */ 9095 uint8_t gap_whitelist_clear(void){ 9096 hci_whitelist_clear(); 9097 hci_run(); 9098 return ERROR_CODE_SUCCESS; 9099 } 9100 9101 /** 9102 * @brief Add Device to Whitelist 9103 * @param address_typ 9104 * @param address 9105 * @return 0 if ok 9106 */ 9107 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9108 uint8_t status = hci_whitelist_add(address_type, address); 9109 if (status){ 9110 return status; 9111 } 9112 hci_run(); 9113 return ERROR_CODE_SUCCESS; 9114 } 9115 9116 /** 9117 * @brief Remove Device from Whitelist 9118 * @param address_typ 9119 * @param address 9120 * @return 0 if ok 9121 */ 9122 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9123 uint8_t status = hci_whitelist_remove(address_type, address); 9124 if (status){ 9125 return status; 9126 } 9127 hci_run(); 9128 return ERROR_CODE_SUCCESS; 9129 } 9130 9131 #ifdef ENABLE_LE_CENTRAL 9132 /** 9133 * @brief Connect with Whitelist 9134 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9135 * @return - if ok 9136 */ 9137 uint8_t gap_connect_with_whitelist(void){ 9138 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9139 return ERROR_CODE_COMMAND_DISALLOWED; 9140 } 9141 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9142 hci_run(); 9143 return ERROR_CODE_SUCCESS; 9144 } 9145 9146 /** 9147 * @brief Auto Connection Establishment - Start Connecting to device 9148 * @param address_typ 9149 * @param address 9150 * @return 0 if ok 9151 */ 9152 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9153 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9154 return ERROR_CODE_COMMAND_DISALLOWED; 9155 } 9156 9157 uint8_t status = hci_whitelist_add(address_type, address); 9158 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9159 return status; 9160 } 9161 9162 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9163 9164 hci_run(); 9165 return ERROR_CODE_SUCCESS; 9166 } 9167 9168 /** 9169 * @brief Auto Connection Establishment - Stop Connecting to device 9170 * @param address_typ 9171 * @param address 9172 * @return 0 if ok 9173 */ 9174 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9175 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9176 return ERROR_CODE_COMMAND_DISALLOWED; 9177 } 9178 9179 hci_whitelist_remove(address_type, address); 9180 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9181 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9182 } 9183 hci_run(); 9184 return 0; 9185 } 9186 9187 /** 9188 * @brief Auto Connection Establishment - Stop everything 9189 * @note Convenience function to stop all active auto connection attempts 9190 */ 9191 uint8_t gap_auto_connection_stop_all(void){ 9192 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9193 return ERROR_CODE_COMMAND_DISALLOWED; 9194 } 9195 hci_whitelist_clear(); 9196 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9197 hci_run(); 9198 return ERROR_CODE_SUCCESS; 9199 } 9200 9201 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9202 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9203 if (!conn) return 0; 9204 return conn->le_connection_interval; 9205 } 9206 #endif 9207 #endif 9208 9209 #ifdef ENABLE_CLASSIC 9210 /** 9211 * @brief Set Extended Inquiry Response data 9212 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9213 * @note has to be done before stack starts up 9214 */ 9215 void gap_set_extended_inquiry_response(const uint8_t * data){ 9216 hci_stack->eir_data = data; 9217 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9218 hci_run(); 9219 } 9220 9221 /** 9222 * @brief Start GAP Classic Inquiry 9223 * @param duration in 1.28s units 9224 * @return 0 if ok 9225 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9226 */ 9227 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9228 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9229 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9230 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9231 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9232 } 9233 hci_stack->inquiry_state = duration_in_1280ms_units; 9234 hci_stack->inquiry_max_period_length = 0; 9235 hci_stack->inquiry_min_period_length = 0; 9236 hci_run(); 9237 return 0; 9238 } 9239 9240 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9241 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9242 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9243 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9244 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9245 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9246 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9247 9248 hci_stack->inquiry_state = duration; 9249 hci_stack->inquiry_max_period_length = max_period_length; 9250 hci_stack->inquiry_min_period_length = min_period_length; 9251 hci_run(); 9252 return 0; 9253 } 9254 9255 /** 9256 * @brief Stop GAP Classic Inquiry 9257 * @return 0 if ok 9258 */ 9259 int gap_inquiry_stop(void){ 9260 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9261 // emit inquiry complete event, before it even started 9262 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9263 hci_emit_event(event, sizeof(event), 1); 9264 return 0; 9265 } 9266 switch (hci_stack->inquiry_state){ 9267 case GAP_INQUIRY_STATE_ACTIVE: 9268 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9269 hci_run(); 9270 return ERROR_CODE_SUCCESS; 9271 case GAP_INQUIRY_STATE_PERIODIC: 9272 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9273 hci_run(); 9274 return ERROR_CODE_SUCCESS; 9275 default: 9276 return ERROR_CODE_COMMAND_DISALLOWED; 9277 } 9278 } 9279 9280 void gap_inquiry_set_lap(uint32_t lap){ 9281 hci_stack->inquiry_lap = lap; 9282 } 9283 9284 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9285 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9286 hci_stack->inquiry_scan_window = inquiry_scan_window; 9287 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9288 hci_run(); 9289 } 9290 9291 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9292 { 9293 hci_stack->inquiry_tx_power_level = tx_power; 9294 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9295 hci_run(); 9296 } 9297 9298 9299 /** 9300 * @brief Remote Name Request 9301 * @param addr 9302 * @param page_scan_repetition_mode 9303 * @param clock_offset only used when bit 15 is set 9304 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9305 */ 9306 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9307 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9308 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9309 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9310 hci_stack->remote_name_clock_offset = clock_offset; 9311 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9312 hci_run(); 9313 return 0; 9314 } 9315 9316 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9317 hci_stack->gap_pairing_state = state; 9318 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9319 hci_run(); 9320 return 0; 9321 } 9322 9323 /** 9324 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9325 * @param addr 9326 * @param pin_data 9327 * @param pin_len 9328 * @return 0 if ok 9329 */ 9330 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9331 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9332 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9333 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9334 hci_stack->gap_pairing_pin_len = pin_len; 9335 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9336 } 9337 9338 /** 9339 * @brief Legacy Pairing Pin Code Response 9340 * @param addr 9341 * @param pin 9342 * @return 0 if ok 9343 */ 9344 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9345 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9346 } 9347 9348 /** 9349 * @brief Abort Legacy Pairing 9350 * @param addr 9351 * @param pin 9352 * @return 0 if ok 9353 */ 9354 int gap_pin_code_negative(bd_addr_t addr){ 9355 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9356 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9357 } 9358 9359 /** 9360 * @brief SSP Passkey Response 9361 * @param addr 9362 * @param passkey 9363 * @return 0 if ok 9364 */ 9365 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9366 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9367 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9368 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9369 } 9370 9371 /** 9372 * @brief Abort SSP Passkey Entry/Pairing 9373 * @param addr 9374 * @param pin 9375 * @return 0 if ok 9376 */ 9377 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9378 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9379 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9380 } 9381 9382 /** 9383 * @brief Accept SSP Numeric Comparison 9384 * @param addr 9385 * @param passkey 9386 * @return 0 if ok 9387 */ 9388 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9389 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9390 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9391 } 9392 9393 /** 9394 * @brief Abort SSP Numeric Comparison/Pairing 9395 * @param addr 9396 * @param pin 9397 * @return 0 if ok 9398 */ 9399 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9400 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9401 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9402 } 9403 9404 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9405 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9406 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9407 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9408 connectionSetAuthenticationFlags(conn, flag); 9409 hci_run(); 9410 return ERROR_CODE_SUCCESS; 9411 } 9412 #endif 9413 9414 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9415 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9416 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9417 } 9418 9419 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9420 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9421 } 9422 #endif 9423 9424 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9425 /** 9426 * @brief Report Remote OOB Data 9427 * @param bd_addr 9428 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9429 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9430 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9431 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9432 */ 9433 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){ 9434 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9435 if (connection == NULL) { 9436 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9437 } 9438 connection->classic_oob_c_192 = c_192; 9439 connection->classic_oob_r_192 = r_192; 9440 9441 // ignore P-256 if not supported by us 9442 if (hci_stack->secure_connections_active){ 9443 connection->classic_oob_c_256 = c_256; 9444 connection->classic_oob_r_256 = r_256; 9445 } 9446 9447 return ERROR_CODE_SUCCESS; 9448 } 9449 /** 9450 * @brief Generate new OOB data 9451 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9452 */ 9453 void gap_ssp_generate_oob_data(void){ 9454 hci_stack->classic_read_local_oob_data = true; 9455 hci_run(); 9456 } 9457 9458 #endif 9459 9460 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9461 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9462 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9463 if (connection == NULL) { 9464 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9465 } 9466 9467 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9468 connection->link_key_type = type; 9469 9470 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9471 } 9472 9473 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9474 /** 9475 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9476 * @param inquiry_mode see bluetooth_defines.h 9477 */ 9478 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9479 hci_stack->inquiry_mode = inquiry_mode; 9480 } 9481 9482 /** 9483 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9484 */ 9485 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9486 hci_stack->sco_voice_setting = voice_setting; 9487 } 9488 9489 /** 9490 * @brief Get SCO Voice Setting 9491 * @return current voice setting 9492 */ 9493 uint16_t hci_get_sco_voice_setting(void){ 9494 return hci_stack->sco_voice_setting; 9495 } 9496 9497 static int hci_have_usb_transport(void){ 9498 if (!hci_stack->hci_transport) return 0; 9499 const char * transport_name = hci_stack->hci_transport->name; 9500 if (!transport_name) return 0; 9501 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9502 } 9503 9504 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9505 uint16_t sco_packet_length = 0; 9506 9507 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9508 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9509 int multiplier; 9510 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9511 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9512 multiplier = 2; 9513 } else { 9514 multiplier = 1; 9515 } 9516 #endif 9517 9518 #ifdef ENABLE_SCO_OVER_HCI 9519 if (hci_have_usb_transport()){ 9520 // see Core Spec for H2 USB Transfer. 9521 // 3 byte SCO header + 24 bytes per connection 9522 // @note multiple sco connections not supported currently 9523 sco_packet_length = 3 + 24 * multiplier; 9524 } else { 9525 // 3 byte SCO header + SCO packet length over the air 9526 sco_packet_length = 3 + payload_size * multiplier; 9527 // assert that it still fits inside an SCO buffer 9528 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9529 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9530 } 9531 } 9532 #endif 9533 #ifdef HAVE_SCO_TRANSPORT 9534 // 3 byte SCO header + SCO packet length over the air 9535 sco_packet_length = 3 + payload_size * multiplier; 9536 // assert that it still fits inside an SCO buffer 9537 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9538 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9539 } 9540 #endif 9541 return sco_packet_length; 9542 } 9543 9544 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9545 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9546 if (connection != NULL){ 9547 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9548 } 9549 return 0; 9550 } 9551 9552 uint16_t hci_get_sco_packet_length(void){ 9553 btstack_linked_list_iterator_t it; 9554 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9555 while (btstack_linked_list_iterator_has_next(&it)){ 9556 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9557 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9558 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9559 } 9560 } 9561 return 0; 9562 } 9563 9564 /** 9565 * @brief Sets the master/slave policy 9566 * @param policy (0: attempt to become master, 1: let connecting device decide) 9567 */ 9568 void hci_set_master_slave_policy(uint8_t policy){ 9569 hci_stack->master_slave_policy = policy; 9570 } 9571 9572 #endif 9573 9574 HCI_STATE hci_get_state(void){ 9575 return hci_stack->state; 9576 } 9577 9578 #ifdef ENABLE_CLASSIC 9579 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9580 hci_stack->gap_classic_accept_callback = accept_callback; 9581 } 9582 #endif 9583 9584 /** 9585 * @brief Set callback for Bluetooth Hardware Error 9586 */ 9587 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9588 hci_stack->hardware_error_callback = fn; 9589 } 9590 9591 void hci_disconnect_all(void){ 9592 btstack_linked_list_iterator_t it; 9593 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9594 while (btstack_linked_list_iterator_has_next(&it)){ 9595 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9596 if (con->state == SENT_DISCONNECT) continue; 9597 con->state = SEND_DISCONNECT; 9598 } 9599 hci_run(); 9600 } 9601 9602 uint16_t hci_get_manufacturer(void){ 9603 return hci_stack->manufacturer; 9604 } 9605 9606 #ifdef ENABLE_BLE 9607 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9608 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9609 if (!hci_con) return NULL; 9610 return &hci_con->sm_connection; 9611 } 9612 9613 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9614 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9615 #endif 9616 9617 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9618 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9619 if (hci_connection == NULL) return 0; 9620 if (hci_is_le_connection(hci_connection)){ 9621 #ifdef ENABLE_BLE 9622 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9623 if (sm_conn->sm_connection_encrypted != 0u) { 9624 return sm_conn->sm_actual_encryption_key_size; 9625 } 9626 #endif 9627 } else { 9628 #ifdef ENABLE_CLASSIC 9629 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9630 return hci_connection->encryption_key_size; 9631 } 9632 #endif 9633 } 9634 return 0; 9635 } 9636 9637 bool gap_authenticated(hci_con_handle_t con_handle){ 9638 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9639 if (hci_connection == NULL) return false; 9640 9641 switch (hci_connection->address_type){ 9642 #ifdef ENABLE_BLE 9643 case BD_ADDR_TYPE_LE_PUBLIC: 9644 case BD_ADDR_TYPE_LE_RANDOM: 9645 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9646 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9647 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9648 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9649 #endif 9650 #ifdef ENABLE_CLASSIC 9651 case BD_ADDR_TYPE_SCO: 9652 case BD_ADDR_TYPE_ACL: 9653 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9654 #endif 9655 default: 9656 return false; 9657 } 9658 } 9659 9660 bool gap_secure_connection(hci_con_handle_t con_handle){ 9661 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9662 if (hci_connection == NULL) return 0; 9663 9664 switch (hci_connection->address_type){ 9665 #ifdef ENABLE_BLE 9666 case BD_ADDR_TYPE_LE_PUBLIC: 9667 case BD_ADDR_TYPE_LE_RANDOM: 9668 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9669 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9670 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9671 return hci_connection->sm_connection.sm_connection_sc; 9672 #endif 9673 #ifdef ENABLE_CLASSIC 9674 case BD_ADDR_TYPE_SCO: 9675 case BD_ADDR_TYPE_ACL: 9676 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9677 #endif 9678 default: 9679 return false; 9680 } 9681 } 9682 9683 bool gap_bonded(hci_con_handle_t con_handle){ 9684 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9685 if (hci_connection == NULL) return 0; 9686 9687 #ifdef ENABLE_CLASSIC 9688 link_key_t link_key; 9689 link_key_type_t link_key_type; 9690 #endif 9691 switch (hci_connection->address_type){ 9692 #ifdef ENABLE_BLE 9693 case BD_ADDR_TYPE_LE_PUBLIC: 9694 case BD_ADDR_TYPE_LE_RANDOM: 9695 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9696 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9697 return hci_connection->sm_connection.sm_le_db_index >= 0; 9698 #endif 9699 #ifdef ENABLE_CLASSIC 9700 case BD_ADDR_TYPE_SCO: 9701 case BD_ADDR_TYPE_ACL: 9702 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9703 #endif 9704 default: 9705 return false; 9706 } 9707 } 9708 9709 #ifdef ENABLE_BLE 9710 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9711 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9712 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9713 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9714 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9715 return sm_conn->sm_connection_authorization_state; 9716 } 9717 #endif 9718 9719 #ifdef ENABLE_CLASSIC 9720 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){ 9721 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9722 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9723 conn->sniff_min_interval = sniff_min_interval; 9724 conn->sniff_max_interval = sniff_max_interval; 9725 conn->sniff_attempt = sniff_attempt; 9726 conn->sniff_timeout = sniff_timeout; 9727 hci_run(); 9728 return 0; 9729 } 9730 9731 /** 9732 * @brief Exit Sniff mode 9733 * @param con_handle 9734 @ @return 0 if ok 9735 */ 9736 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9737 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9738 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9739 conn->sniff_min_interval = 0xffff; 9740 hci_run(); 9741 return 0; 9742 } 9743 9744 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){ 9745 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9746 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9747 conn->sniff_subrating_max_latency = max_latency; 9748 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9749 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9750 hci_run(); 9751 return ERROR_CODE_SUCCESS; 9752 } 9753 9754 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){ 9755 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9756 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9757 conn->qos_service_type = service_type; 9758 conn->qos_token_rate = token_rate; 9759 conn->qos_peak_bandwidth = peak_bandwidth; 9760 conn->qos_latency = latency; 9761 conn->qos_delay_variation = delay_variation; 9762 hci_run(); 9763 return ERROR_CODE_SUCCESS; 9764 } 9765 9766 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9767 hci_stack->new_page_scan_interval = page_scan_interval; 9768 hci_stack->new_page_scan_window = page_scan_window; 9769 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9770 hci_run(); 9771 } 9772 9773 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9774 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9775 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9776 hci_run(); 9777 } 9778 9779 void gap_set_page_timeout(uint16_t page_timeout){ 9780 hci_stack->page_timeout = page_timeout; 9781 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9782 hci_run(); 9783 } 9784 9785 #endif 9786 9787 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9788 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9789 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9790 if (le_device_db_index >= le_device_db_max_count()) return; 9791 uint8_t offset = le_device_db_index >> 3; 9792 uint8_t mask = 1 << (le_device_db_index & 7); 9793 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9794 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9795 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9796 // note: go back to remove entries, otherwise, a remove + add will skip the add 9797 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9798 } 9799 } 9800 9801 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9802 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9803 if (le_device_db_index >= le_device_db_max_count()) return; 9804 uint8_t offset = le_device_db_index >> 3; 9805 uint8_t mask = 1 << (le_device_db_index & 7); 9806 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9807 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9808 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9809 } 9810 } 9811 9812 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9813 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9814 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9815 } 9816 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9817 // restart le resolving list update 9818 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9819 } 9820 return ERROR_CODE_SUCCESS; 9821 } 9822 9823 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9824 hci_stack->le_privacy_mode = privacy_mode; 9825 } 9826 #endif 9827 9828 #ifdef ENABLE_BLE 9829 #ifdef ENABLE_LE_CENTRAL 9830 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9831 9832 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9833 9834 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9835 // incorrect configuration: 9836 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9837 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9838 btstack_assert(false); 9839 #endif 9840 9841 // check if already in list 9842 btstack_linked_list_iterator_t it; 9843 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9844 while (btstack_linked_list_iterator_has_next(&it)) { 9845 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9846 if (entry->sid != advertising_sid) { 9847 continue; 9848 } 9849 if (entry->address_type != address_type) { 9850 continue; 9851 } 9852 if (memcmp(entry->address, address, 6) != 0) { 9853 continue; 9854 } 9855 // disallow if already scheduled to add 9856 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9857 return ERROR_CODE_COMMAND_DISALLOWED; 9858 } 9859 // still on controller, but scheduled to remove -> re-add 9860 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9861 return ERROR_CODE_SUCCESS; 9862 } 9863 // alloc and add to list 9864 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9865 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9866 entry->sid = advertising_sid; 9867 entry->address_type = address_type; 9868 (void)memcpy(entry->address, address, 6); 9869 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9870 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9871 return ERROR_CODE_SUCCESS; 9872 } 9873 9874 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9875 btstack_linked_list_iterator_t it; 9876 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9877 while (btstack_linked_list_iterator_has_next(&it)){ 9878 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9879 if (entry->sid != advertising_sid) { 9880 continue; 9881 } 9882 if (entry->address_type != address_type) { 9883 continue; 9884 } 9885 if (memcmp(entry->address, address, 6) != 0) { 9886 continue; 9887 } 9888 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9889 // remove from controller if already present 9890 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9891 } else { 9892 // directly remove entry from whitelist 9893 btstack_linked_list_iterator_remove(&it); 9894 btstack_memory_periodic_advertiser_list_entry_free(entry); 9895 } 9896 return ERROR_CODE_SUCCESS; 9897 } 9898 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9899 } 9900 9901 static void hci_periodic_advertiser_list_clear(void){ 9902 btstack_linked_list_iterator_t it; 9903 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9904 while (btstack_linked_list_iterator_has_next(&it)){ 9905 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9906 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9907 // remove from controller if already present 9908 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9909 continue; 9910 } 9911 // directly remove entry from whitelist 9912 btstack_linked_list_iterator_remove(&it); 9913 btstack_memory_periodic_advertiser_list_entry_free(entry); 9914 } 9915 } 9916 9917 uint8_t gap_periodic_advertiser_list_clear(void){ 9918 hci_periodic_advertiser_list_clear(); 9919 hci_run(); 9920 return ERROR_CODE_SUCCESS; 9921 } 9922 9923 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9924 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9925 if (status){ 9926 return status; 9927 } 9928 hci_run(); 9929 return ERROR_CODE_SUCCESS; 9930 } 9931 9932 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9933 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9934 if (status){ 9935 return status; 9936 } 9937 hci_run(); 9938 return ERROR_CODE_SUCCESS; 9939 } 9940 9941 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9942 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9943 // abort if already active 9944 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9945 return ERROR_CODE_COMMAND_DISALLOWED; 9946 } 9947 // store request 9948 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9949 hci_stack->le_periodic_sync_options = options; 9950 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 9951 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 9952 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 9953 hci_stack->le_periodic_sync_skip = skip; 9954 hci_stack->le_periodic_sync_timeout = sync_timeout; 9955 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 9956 9957 hci_run(); 9958 return ERROR_CODE_SUCCESS; 9959 } 9960 9961 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 9962 // abort if not requested 9963 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 9964 return ERROR_CODE_COMMAND_DISALLOWED; 9965 } 9966 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 9967 hci_run(); 9968 return ERROR_CODE_SUCCESS; 9969 } 9970 9971 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 9972 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 9973 return ERROR_CODE_COMMAND_DISALLOWED; 9974 } 9975 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 9976 hci_run(); 9977 return ERROR_CODE_SUCCESS; 9978 } 9979 9980 #endif 9981 #endif 9982 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 9983 static hci_iso_stream_t * 9984 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 9985 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 9986 if (iso_stream != NULL){ 9987 iso_stream->iso_type = iso_type; 9988 iso_stream->state = state; 9989 iso_stream->group_id = group_id; 9990 iso_stream->stream_id = stream_id; 9991 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 9992 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 9993 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 9994 } 9995 return iso_stream; 9996 } 9997 9998 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 9999 btstack_linked_list_iterator_t it; 10000 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10001 while (btstack_linked_list_iterator_has_next(&it)){ 10002 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10003 if (iso_stream->cis_handle == con_handle ) { 10004 return iso_stream; 10005 } 10006 } 10007 return NULL; 10008 } 10009 10010 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10011 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10012 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10013 btstack_memory_hci_iso_stream_free(iso_stream); 10014 } 10015 10016 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10017 btstack_linked_list_iterator_t it; 10018 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10019 while (btstack_linked_list_iterator_has_next(&it)){ 10020 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10021 if ((iso_stream->group_id == group_id) && 10022 (iso_stream->iso_type == iso_type)){ 10023 btstack_linked_list_iterator_remove(&it); 10024 btstack_memory_hci_iso_stream_free(iso_stream); 10025 } 10026 } 10027 } 10028 10029 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10030 btstack_linked_list_iterator_t it; 10031 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10032 while (btstack_linked_list_iterator_has_next(&it)){ 10033 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10034 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10035 (iso_stream->group_id == group_id)){ 10036 btstack_linked_list_iterator_remove(&it); 10037 btstack_memory_hci_iso_stream_free(iso_stream); 10038 } 10039 } 10040 } 10041 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10042 btstack_linked_list_iterator_t it; 10043 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10044 while (btstack_linked_list_iterator_has_next(&it)){ 10045 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10046 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10047 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10048 } 10049 } 10050 } 10051 10052 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10053 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10054 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10055 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10056 return (sdu_len_offset + 2 + sdu_len) == size; 10057 } 10058 10059 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10060 if (iso_stream == NULL){ 10061 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10062 return; 10063 } 10064 10065 if (hci_stack->iso_packet_handler == NULL) { 10066 return; 10067 } 10068 10069 // parse header 10070 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10071 uint16_t data_total_length = little_endian_read_16(packet, 2); 10072 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10073 10074 // assert packet is complete 10075 if ((data_total_length + 4u) != size){ 10076 return; 10077 } 10078 10079 if ((pb_flag & 0x01) == 0){ 10080 if (pb_flag == 0x02){ 10081 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10082 if (hci_iso_sdu_complete(packet, size)) { 10083 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10084 } 10085 } else { 10086 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10087 if (size > sizeof(iso_stream->reassembly_buffer)){ 10088 return; 10089 } 10090 memcpy(iso_stream->reassembly_buffer, packet, size); 10091 // fix pb_flag 10092 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10093 iso_stream->reassembly_pos = size; 10094 } 10095 } else { 10096 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10097 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10098 if (ts_flag != 0){ 10099 return; 10100 } 10101 // append fragment 10102 if (iso_stream->reassembly_pos == 0){ 10103 return; 10104 } 10105 10106 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10107 // reset reassembly buffer 10108 iso_stream->reassembly_pos = 0; 10109 return; 10110 } 10111 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10112 iso_stream->reassembly_pos += data_total_length; 10113 10114 // deliver if last fragment and SDU complete 10115 if (pb_flag == 0x03){ 10116 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10117 // fix data_total_length 10118 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10119 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10120 } 10121 // reset reassembly buffer 10122 iso_stream->reassembly_pos = 0; 10123 } 10124 } 10125 } 10126 10127 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10128 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10129 uint16_t pos = 0; 10130 event[pos++] = HCI_EVENT_META_GAP; 10131 event[pos++] = 4 + (2 * big->num_bis); 10132 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10133 event[pos++] = status; 10134 event[pos++] = big->big_handle; 10135 event[pos++] = big->num_bis; 10136 uint8_t i; 10137 for (i=0;i<big->num_bis;i++){ 10138 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10139 pos += 2; 10140 } 10141 hci_emit_event(event, pos, 0); 10142 } 10143 10144 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10145 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10146 uint16_t pos = 0; 10147 event[pos++] = HCI_EVENT_META_GAP; 10148 event[pos++] = 4 + (2 * cig->num_cis); 10149 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10150 event[pos++] = status; 10151 event[pos++] = cig->cig_id; 10152 event[pos++] = cig->num_cis; 10153 uint8_t i; 10154 for (i=0;i<cig->num_cis;i++){ 10155 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10156 pos += 2; 10157 } 10158 hci_emit_event(event, pos, 0); 10159 } 10160 10161 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10162 uint16_t pos = 0; 10163 event[pos++] = HCI_EVENT_META_GAP; 10164 event[pos++] = 8; 10165 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10166 event[pos++] = status; 10167 event[pos++] = iso_stream->group_id; 10168 event[pos++] = iso_stream->stream_id; 10169 little_endian_store_16(event, pos, iso_stream->cis_handle); 10170 pos += 2; 10171 little_endian_store_16(event, pos, iso_stream->acl_handle); 10172 pos += 2; 10173 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10174 pos += 2; 10175 event[pos++] = iso_stream->number_of_subevents; 10176 event[pos++] = iso_stream->burst_number_c_to_p; 10177 event[pos++] = iso_stream->burst_number_p_to_c; 10178 event[pos++] = iso_stream->flush_timeout_c_to_p; 10179 event[pos++] = iso_stream->flush_timeout_p_to_c; 10180 return pos; 10181 } 10182 10183 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10184 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10185 // cache data before finalizing struct 10186 uint8_t event [17]; 10187 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10188 btstack_assert(pos <= sizeof(event)); 10189 if (status != ERROR_CODE_SUCCESS){ 10190 hci_iso_stream_finalize(iso_stream); 10191 } 10192 hci_emit_event(event, pos, 0); 10193 } 10194 10195 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10196 uint8_t event [4]; 10197 uint16_t pos = 0; 10198 event[pos++] = HCI_EVENT_META_GAP; 10199 event[pos++] = 2; 10200 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10201 event[pos++] = big->big_handle; 10202 hci_emit_event(event, pos, 0); 10203 } 10204 10205 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10206 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10207 uint16_t pos = 0; 10208 event[pos++] = HCI_EVENT_META_GAP; 10209 event[pos++] = 4; 10210 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10211 event[pos++] = status; 10212 event[pos++] = big_sync->big_handle; 10213 event[pos++] = big_sync->num_bis; 10214 uint8_t i; 10215 for (i=0;i<big_sync->num_bis;i++){ 10216 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10217 pos += 2; 10218 } 10219 hci_emit_event(event, pos, 0); 10220 } 10221 10222 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10223 uint8_t event [4]; 10224 uint16_t pos = 0; 10225 event[pos++] = HCI_EVENT_META_GAP; 10226 event[pos++] = 2; 10227 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10228 event[pos++] = big_handle; 10229 hci_emit_event(event, pos, 0); 10230 } 10231 10232 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10233 uint8_t event[6]; 10234 uint16_t pos = 0; 10235 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10236 event[pos++] = sizeof(event) - 2; 10237 event[pos++] = big->big_handle; 10238 event[pos++] = bis_index; 10239 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10240 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10241 } 10242 10243 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10244 uint8_t event[4]; 10245 uint16_t pos = 0; 10246 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10247 event[pos++] = sizeof(event) - 2; 10248 little_endian_store_16(event, pos, cis_con_handle); 10249 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 10250 } 10251 10252 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10253 btstack_linked_list_iterator_t it; 10254 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10255 while (btstack_linked_list_iterator_has_next(&it)){ 10256 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10257 if ( big->big_handle == big_handle ) { 10258 return big; 10259 } 10260 } 10261 return NULL; 10262 } 10263 10264 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10265 btstack_linked_list_iterator_t it; 10266 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10267 while (btstack_linked_list_iterator_has_next(&it)){ 10268 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10269 if ( big_sync->big_handle == big_handle ) { 10270 return big_sync; 10271 } 10272 } 10273 return NULL; 10274 } 10275 10276 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10277 hci_stack->iso_packets_to_queue = num_packets; 10278 } 10279 10280 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10281 btstack_linked_list_iterator_t it; 10282 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10283 while (btstack_linked_list_iterator_has_next(&it)){ 10284 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10285 if ( cig->cig_id == cig_id ) { 10286 return cig; 10287 } 10288 } 10289 return NULL; 10290 } 10291 10292 static void hci_iso_notify_can_send_now(void){ 10293 10294 // BIG 10295 10296 btstack_linked_list_iterator_t it; 10297 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10298 while (btstack_linked_list_iterator_has_next(&it)){ 10299 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10300 // track number completed packet timestamps 10301 if (big->num_completed_timestamp_current_valid){ 10302 big->num_completed_timestamp_current_valid = false; 10303 if (big->num_completed_timestamp_previous_valid){ 10304 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10305 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10306 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10307 big->num_completed_timestamp_previous_ms); 10308 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10309 // to catch up, skip packet on all BIS 10310 uint8_t i; 10311 for (i=0;i<big->num_bis;i++){ 10312 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10313 if (iso_stream){ 10314 iso_stream->num_packets_to_skip++; 10315 } 10316 } 10317 } 10318 } 10319 big->num_completed_timestamp_previous_valid = true; 10320 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10321 } 10322 10323 if (big->can_send_now_requested){ 10324 // check if no outgoing iso packets pending and no can send now have to be emitted 10325 uint8_t i; 10326 bool can_send = true; 10327 uint8_t num_iso_queued_minimum = 0; 10328 for (i=0;i<big->num_bis;i++){ 10329 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10330 if (iso_stream == NULL) continue; 10331 // handle case where individual ISO packet was sent too late: 10332 // for each additionally queued packet, a new one needs to get skipped 10333 if (i==0){ 10334 num_iso_queued_minimum = iso_stream->num_packets_sent; 10335 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10336 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10337 iso_stream->num_packets_to_skip += num_packets_to_skip; 10338 iso_stream->num_packets_sent -= num_packets_to_skip; 10339 } 10340 // check if we can send now 10341 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10342 can_send = false; 10343 break; 10344 } 10345 } 10346 if (can_send){ 10347 // propagate can send now to individual streams 10348 big->can_send_now_requested = false; 10349 for (i=0;i<big->num_bis;i++){ 10350 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10351 iso_stream->emit_ready_to_send = true; 10352 } 10353 } 10354 } 10355 } 10356 10357 if (hci_stack->hci_packet_buffer_reserved) return; 10358 10359 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10360 while (btstack_linked_list_iterator_has_next(&it)){ 10361 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10362 // report bis ready 10363 uint8_t i; 10364 for (i=0;i<big->num_bis;i++){ 10365 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10366 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10367 iso_stream->emit_ready_to_send = false; 10368 hci_emit_bis_can_send_now(big, i); 10369 break; 10370 } 10371 } 10372 } 10373 10374 // CIS 10375 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10376 while (btstack_linked_list_iterator_has_next(&it)) { 10377 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10378 if ((iso_stream->can_send_now_requested) && 10379 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10380 iso_stream->can_send_now_requested = false; 10381 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10382 } 10383 } 10384 } 10385 10386 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10387 // make big handle unique and usuable for big and big sync 10388 if (hci_big_for_handle(big_handle) != NULL){ 10389 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10390 } 10391 if (hci_big_sync_for_handle(big_handle) != NULL){ 10392 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10393 } 10394 if (num_bis == 0){ 10395 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10396 } 10397 if (num_bis > MAX_NR_BIS){ 10398 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10399 } 10400 10401 // reserve ISO Streams 10402 uint8_t i; 10403 uint8_t status = ERROR_CODE_SUCCESS; 10404 for (i=0;i<num_bis;i++){ 10405 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10406 if (iso_stream == NULL) { 10407 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10408 break; 10409 } 10410 } 10411 10412 // free structs on error 10413 if (status != ERROR_CODE_SUCCESS){ 10414 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10415 } 10416 10417 return status; 10418 } 10419 10420 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10421 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10422 if (status != ERROR_CODE_SUCCESS){ 10423 return status; 10424 } 10425 10426 le_audio_big_t * big = storage; 10427 big->big_handle = big_params->big_handle; 10428 big->params = big_params; 10429 big->state = LE_AUDIO_BIG_STATE_CREATE; 10430 big->num_bis = big_params->num_bis; 10431 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10432 10433 hci_run(); 10434 10435 return ERROR_CODE_SUCCESS; 10436 } 10437 10438 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10439 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10440 if (status != ERROR_CODE_SUCCESS){ 10441 return status; 10442 } 10443 10444 le_audio_big_sync_t * big_sync = storage; 10445 big_sync->big_handle = big_sync_params->big_handle; 10446 big_sync->params = big_sync_params; 10447 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10448 big_sync->num_bis = big_sync_params->num_bis; 10449 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10450 10451 hci_run(); 10452 10453 return ERROR_CODE_SUCCESS; 10454 } 10455 10456 uint8_t gap_big_terminate(uint8_t big_handle){ 10457 le_audio_big_t * big = hci_big_for_handle(big_handle); 10458 if (big == NULL){ 10459 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10460 } 10461 switch (big->state){ 10462 case LE_AUDIO_BIG_STATE_CREATE: 10463 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10464 hci_emit_big_terminated(big); 10465 break; 10466 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10467 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10468 break; 10469 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10470 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10471 case LE_AUDIO_BIG_STATE_ACTIVE: 10472 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10473 hci_run(); 10474 break; 10475 default: 10476 return ERROR_CODE_COMMAND_DISALLOWED; 10477 } 10478 return ERROR_CODE_SUCCESS; 10479 } 10480 10481 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10482 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10483 if (big_sync == NULL){ 10484 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10485 } 10486 switch (big_sync->state){ 10487 case LE_AUDIO_BIG_STATE_CREATE: 10488 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10489 hci_emit_big_sync_stopped(big_handle); 10490 break; 10491 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10492 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10493 break; 10494 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10495 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10496 case LE_AUDIO_BIG_STATE_ACTIVE: 10497 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10498 hci_run(); 10499 break; 10500 default: 10501 return ERROR_CODE_COMMAND_DISALLOWED; 10502 } 10503 return ERROR_CODE_SUCCESS; 10504 } 10505 10506 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10507 le_audio_big_t * big = hci_big_for_handle(big_handle); 10508 if (big == NULL){ 10509 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10510 } 10511 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10512 return ERROR_CODE_COMMAND_DISALLOWED; 10513 } 10514 big->can_send_now_requested = true; 10515 hci_iso_notify_can_send_now(); 10516 return ERROR_CODE_SUCCESS; 10517 } 10518 10519 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10520 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10521 if (iso_stream == NULL){ 10522 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10523 } 10524 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10525 return ERROR_CODE_COMMAND_DISALLOWED; 10526 } 10527 iso_stream->can_send_now_requested = true; 10528 hci_iso_notify_can_send_now(); 10529 return ERROR_CODE_SUCCESS; 10530 } 10531 10532 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10533 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10534 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10535 } 10536 if (cig_params->num_cis == 0){ 10537 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10538 } 10539 if (cig_params->num_cis > MAX_NR_CIS){ 10540 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10541 } 10542 10543 // reserve ISO Streams 10544 uint8_t i; 10545 uint8_t status = ERROR_CODE_SUCCESS; 10546 for (i=0;i<cig_params->num_cis;i++){ 10547 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10548 if (iso_stream == NULL) { 10549 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10550 break; 10551 } 10552 } 10553 10554 // free structs on error 10555 if (status != ERROR_CODE_SUCCESS){ 10556 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10557 return status; 10558 } 10559 10560 le_audio_cig_t * cig = storage; 10561 cig->cig_id = cig_params->cig_id; 10562 cig->num_cis = cig_params->num_cis; 10563 cig->params = cig_params; 10564 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10565 for (i=0;i<cig->num_cis;i++){ 10566 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10567 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10568 cig->cis_setup_active[i] = false; 10569 cig->cis_established[i] = false; 10570 } 10571 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10572 10573 hci_run(); 10574 10575 return ERROR_CODE_SUCCESS; 10576 } 10577 10578 uint8_t gap_cig_remove(uint8_t cig_id){ 10579 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10580 if (cig == NULL){ 10581 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10582 } 10583 10584 // close active CIS 10585 uint8_t i; 10586 for (i=0;i<cig->num_cis;i++){ 10587 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10588 if (stream != NULL){ 10589 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10590 } 10591 } 10592 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10593 10594 hci_run(); 10595 10596 return ERROR_CODE_SUCCESS; 10597 } 10598 10599 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10600 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10601 if (cig == NULL){ 10602 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10603 } 10604 10605 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10606 return ERROR_CODE_COMMAND_DISALLOWED; 10607 } 10608 10609 // store ACL Connection Handles 10610 uint8_t i; 10611 for (i=0;i<cig->num_cis;i++){ 10612 // check that all con handles exist and store 10613 hci_con_handle_t cis_handle = cis_con_handles[i]; 10614 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10615 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10616 } 10617 uint8_t j; 10618 bool found = false; 10619 for (j=0;j<cig->num_cis;j++){ 10620 if (cig->cis_con_handles[j] == cis_handle){ 10621 cig->acl_con_handles[j] = acl_con_handles[j]; 10622 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10623 btstack_assert(iso_stream != NULL); 10624 iso_stream->acl_handle = acl_con_handles[j]; 10625 found = true; 10626 break; 10627 } 10628 } 10629 if (!found){ 10630 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10631 } 10632 } 10633 10634 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10635 hci_run(); 10636 10637 return ERROR_CODE_SUCCESS; 10638 } 10639 10640 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10641 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10642 if (iso_stream == NULL){ 10643 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10644 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10645 } 10646 10647 // set next state and continue 10648 iso_stream->state = state; 10649 hci_run(); 10650 return ERROR_CODE_SUCCESS; 10651 } 10652 10653 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10654 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10655 } 10656 10657 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10658 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10659 } 10660 10661 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10662 10663 // GAP Privacy - notify clients before random address update 10664 10665 static bool gap_privacy_client_all_ready(void){ 10666 // check if all ready 10667 btstack_linked_list_iterator_t it; 10668 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10669 while (btstack_linked_list_iterator_has_next(&it)) { 10670 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10671 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10672 return false; 10673 } 10674 } 10675 return true; 10676 } 10677 10678 static void gap_privacy_clients_handle_ready(void){ 10679 // clear 'ready' 10680 btstack_linked_list_iterator_t it; 10681 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10682 while (btstack_linked_list_iterator_has_next(&it)) { 10683 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10684 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10685 } 10686 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10687 hci_run(); 10688 } 10689 10690 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10691 btstack_linked_list_iterator_t it; 10692 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10693 while (btstack_linked_list_iterator_has_next(&it)) { 10694 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10695 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10696 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10697 (*client->callback)(client, new_random_address); 10698 } 10699 } 10700 if (gap_privacy_client_all_ready()){ 10701 gap_privacy_clients_handle_ready(); 10702 } 10703 } 10704 10705 void gap_privacy_client_register(gap_privacy_client_t * client){ 10706 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10707 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10708 } 10709 10710 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10711 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10712 if (gap_privacy_client_all_ready()){ 10713 gap_privacy_clients_handle_ready(); 10714 } 10715 } 10716 10717 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10718 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10719 } 10720 10721 #endif /* ENABLE_BLE */ 10722 10723 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10724 void hci_setup_test_connections_fuzz(void){ 10725 hci_connection_t * conn; 10726 10727 // default address: 66:55:44:33:00:01 10728 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10729 10730 // setup Controller info 10731 hci_stack->num_cmd_packets = 255; 10732 hci_stack->acl_packets_total_num = 255; 10733 10734 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10735 addr[5] = 0x01; 10736 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10737 conn->con_handle = addr[5]; 10738 conn->state = RECEIVED_CONNECTION_REQUEST; 10739 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10740 10741 // setup incoming Classic SCO connection with con handle 0x0002 10742 addr[5] = 0x02; 10743 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10744 conn->con_handle = addr[5]; 10745 conn->state = RECEIVED_CONNECTION_REQUEST; 10746 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10747 10748 // setup ready Classic ACL connection with con handle 0x0003 10749 addr[5] = 0x03; 10750 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10751 conn->con_handle = addr[5]; 10752 conn->state = OPEN; 10753 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10754 10755 // setup ready Classic SCO connection with con handle 0x0004 10756 addr[5] = 0x04; 10757 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10758 conn->con_handle = addr[5]; 10759 conn->state = OPEN; 10760 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10761 10762 // setup ready LE ACL connection with con handle 0x005 and public address 10763 addr[5] = 0x05; 10764 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10765 conn->con_handle = addr[5]; 10766 conn->state = OPEN; 10767 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10768 conn->sm_connection.sm_connection_encrypted = 1; 10769 } 10770 10771 void hci_free_connections_fuzz(void){ 10772 btstack_linked_list_iterator_t it; 10773 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10774 while (btstack_linked_list_iterator_has_next(&it)){ 10775 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10776 btstack_linked_list_iterator_remove(&it); 10777 btstack_memory_hci_connection_free(con); 10778 } 10779 } 10780 void hci_simulate_working_fuzz(void){ 10781 hci_stack->le_scanning_param_update = false; 10782 hci_init_done(); 10783 hci_stack->num_cmd_packets = 255; 10784 } 10785 #endif 10786